ref: 81592731016180584d0de28be13965aa5b80ea0d
author: Jean-Marc Valin <[email protected]>
date: Tue Jun 29 19:26:14 EDT 2010
Initial Skype commit taken from FreeSwitch, which got it from the IETF draft.
--- /dev/null
+++ b/COPYING
@@ -1,0 +1,26 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
--- /dev/null
+++ b/INSTALL
@@ -1,0 +1,236 @@
+Installation Instructions
+*************************
+
+Copyright (C) 1994, 1995, 1996, 1999, 2000, 2001, 2002, 2004, 2005 Free
+Software Foundation, Inc.
+
+This file is free documentation; the Free Software Foundation gives
+unlimited permission to copy, distribute and modify it.
+
+Basic Installation
+==================
+
+These are generic installation instructions.
+
+ The `configure' shell script attempts to guess correct values for
+various system-dependent variables used during compilation. It uses
+those values to create a `Makefile' in each directory of the package.
+It may also create one or more `.h' files containing system-dependent
+definitions. Finally, it creates a shell script `config.status' that
+you can run in the future to recreate the current configuration, and a
+file `config.log' containing compiler output (useful mainly for
+debugging `configure').
+
+ It can also use an optional file (typically called `config.cache'
+and enabled with `--cache-file=config.cache' or simply `-C') that saves
+the results of its tests to speed up reconfiguring. (Caching is
+disabled by default to prevent problems with accidental use of stale
+cache files.)
+
+ If you need to do unusual things to compile the package, please try
+to figure out how `configure' could check whether to do them, and mail
+diffs or instructions to the address given in the `README' so they can
+be considered for the next release. If you are using the cache, and at
+some point `config.cache' contains results you don't want to keep, you
+may remove or edit it.
+
+ The file `configure.ac' (or `configure.in') is used to create
+`configure' by a program called `autoconf'. You only need
+`configure.ac' if you want to change it or regenerate `configure' using
+a newer version of `autoconf'.
+
+The simplest way to compile this package is:
+
+ 1. `cd' to the directory containing the package's source code and type
+ `./configure' to configure the package for your system. If you're
+ using `csh' on an old version of System V, you might need to type
+ `sh ./configure' instead to prevent `csh' from trying to execute
+ `configure' itself.
+
+ Running `configure' takes awhile. While running, it prints some
+ messages telling which features it is checking for.
+
+ 2. Type `make' to compile the package.
+
+ 3. Optionally, type `make check' to run any self-tests that come with
+ the package.
+
+ 4. Type `make install' to install the programs and any data files and
+ documentation.
+
+ 5. You can remove the program binaries and object files from the
+ source code directory by typing `make clean'. To also remove the
+ files that `configure' created (so you can compile the package for
+ a different kind of computer), type `make distclean'. There is
+ also a `make maintainer-clean' target, but that is intended mainly
+ for the package's developers. If you use it, you may have to get
+ all sorts of other programs in order to regenerate files that came
+ with the distribution.
+
+Compilers and Options
+=====================
+
+Some systems require unusual options for compilation or linking that the
+`configure' script does not know about. Run `./configure --help' for
+details on some of the pertinent environment variables.
+
+ You can give `configure' initial values for configuration parameters
+by setting variables in the command line or in the environment. Here
+is an example:
+
+ ./configure CC=c89 CFLAGS=-O2 LIBS=-lposix
+
+ *Note Defining Variables::, for more details.
+
+Compiling For Multiple Architectures
+====================================
+
+You can compile the package for more than one kind of computer at the
+same time, by placing the object files for each architecture in their
+own directory. To do this, you must use a version of `make' that
+supports the `VPATH' variable, such as GNU `make'. `cd' to the
+directory where you want the object files and executables to go and run
+the `configure' script. `configure' automatically checks for the
+source code in the directory that `configure' is in and in `..'.
+
+ If you have to use a `make' that does not support the `VPATH'
+variable, you have to compile the package for one architecture at a
+time in the source code directory. After you have installed the
+package for one architecture, use `make distclean' before reconfiguring
+for another architecture.
+
+Installation Names
+==================
+
+By default, `make install' installs the package's commands under
+`/usr/local/bin', include files under `/usr/local/include', etc. You
+can specify an installation prefix other than `/usr/local' by giving
+`configure' the option `--prefix=PREFIX'.
+
+ You can specify separate installation prefixes for
+architecture-specific files and architecture-independent files. If you
+pass the option `--exec-prefix=PREFIX' to `configure', the package uses
+PREFIX as the prefix for installing programs and libraries.
+Documentation and other data files still use the regular prefix.
+
+ In addition, if you use an unusual directory layout you can give
+options like `--bindir=DIR' to specify different values for particular
+kinds of files. Run `configure --help' for a list of the directories
+you can set and what kinds of files go in them.
+
+ If the package supports it, you can cause programs to be installed
+with an extra prefix or suffix on their names by giving `configure' the
+option `--program-prefix=PREFIX' or `--program-suffix=SUFFIX'.
+
+Optional Features
+=================
+
+Some packages pay attention to `--enable-FEATURE' options to
+`configure', where FEATURE indicates an optional part of the package.
+They may also pay attention to `--with-PACKAGE' options, where PACKAGE
+is something like `gnu-as' or `x' (for the X Window System). The
+`README' should mention any `--enable-' and `--with-' options that the
+package recognizes.
+
+ For packages that use the X Window System, `configure' can usually
+find the X include and library files automatically, but if it doesn't,
+you can use the `configure' options `--x-includes=DIR' and
+`--x-libraries=DIR' to specify their locations.
+
+Specifying the System Type
+==========================
+
+There may be some features `configure' cannot figure out automatically,
+but needs to determine by the type of machine the package will run on.
+Usually, assuming the package is built to be run on the _same_
+architectures, `configure' can figure that out, but if it prints a
+message saying it cannot guess the machine type, give it the
+`--build=TYPE' option. TYPE can either be a short name for the system
+type, such as `sun4', or a canonical name which has the form:
+
+ CPU-COMPANY-SYSTEM
+
+where SYSTEM can have one of these forms:
+
+ OS KERNEL-OS
+
+ See the file `config.sub' for the possible values of each field. If
+`config.sub' isn't included in this package, then this package doesn't
+need to know the machine type.
+
+ If you are _building_ compiler tools for cross-compiling, you should
+use the option `--target=TYPE' to select the type of system they will
+produce code for.
+
+ If you want to _use_ a cross compiler, that generates code for a
+platform different from the build platform, you should specify the
+"host" platform (i.e., that on which the generated programs will
+eventually be run) with `--host=TYPE'.
+
+Sharing Defaults
+================
+
+If you want to set default values for `configure' scripts to share, you
+can create a site shell script called `config.site' that gives default
+values for variables like `CC', `cache_file', and `prefix'.
+`configure' looks for `PREFIX/share/config.site' if it exists, then
+`PREFIX/etc/config.site' if it exists. Or, you can set the
+`CONFIG_SITE' environment variable to the location of the site script.
+A warning: not all `configure' scripts look for a site script.
+
+Defining Variables
+==================
+
+Variables not defined in a site shell script can be set in the
+environment passed to `configure'. However, some packages may run
+configure again during the build, and the customized values of these
+variables may be lost. In order to avoid this problem, you should set
+them in the `configure' command line, using `VAR=value'. For example:
+
+ ./configure CC=/usr/local2/bin/gcc
+
+causes the specified `gcc' to be used as the C compiler (unless it is
+overridden in the site shell script). Here is a another example:
+
+ /bin/bash ./configure CONFIG_SHELL=/bin/bash
+
+Here the `CONFIG_SHELL=/bin/bash' operand causes subsequent
+configuration-related scripts to be executed by `/bin/bash'.
+
+`configure' Invocation
+======================
+
+`configure' recognizes the following options to control how it operates.
+
+`--help'
+`-h'
+ Print a summary of the options to `configure', and exit.
+
+`--version'
+`-V'
+ Print the version of Autoconf used to generate the `configure'
+ script, and exit.
+
+`--cache-file=FILE'
+ Enable the cache: use and save the results of the tests in FILE,
+ traditionally `config.cache'. FILE defaults to `/dev/null' to
+ disable caching.
+
+`--config-cache'
+`-C'
+ Alias for `--cache-file=config.cache'.
+
+`--quiet'
+`--silent'
+`-q'
+ Do not print messages saying which checks are being made. To
+ suppress all normal output, redirect it to `/dev/null' (any error
+ messages will still be shown).
+
+`--srcdir=DIR'
+ Look for the package's source code in directory DIR. Usually
+ `configure' can determine that directory automatically.
+
+`configure' also accepts some other, not widely useful, options. Run
+`configure --help' for more details.
+
--- /dev/null
+++ b/Makefile.am
@@ -1,0 +1,172 @@
+
+AM_CFLAGS = -Isrc -Iinterface -fPIC -Wall -O3
+AUTOMAKE_OPTS = gnu
+NAME = libSKP_SILK_SDK
+AM_CPPFLAGS = $(AM_CFLAGS)
+
+EXTRA_DIST = Silk_SDK.sln \
+src/Silk_FIX.vcproj \
+test/Encoder.c \
+test/Enc_SDK.vcproj \
+test/Decoder.c \
+test/Dec_SDK.vcproj \
+test/signalCompare.c \
+test/SignalCompare.vcproj
+
+lib_LTLIBRARIES = libSKP_SILK_SDK.la
+libSKP_SILK_SDK_la_SOURCES = src/SKP_Silk_A2NLSF.c \
+src/SKP_Silk_allpass_int.c \
+src/SKP_Silk_ana_filt_bank_1.c \
+src/SKP_Silk_apply_sine_window.c \
+src/SKP_Silk_array_maxabs.c \
+src/SKP_Silk_autocorr.c \
+src/SKP_Silk_biquad_alt.c \
+src/SKP_Silk_biquad.c \
+src/SKP_Silk_burg_modified.c \
+src/SKP_Silk_bwexpander_32.c \
+src/SKP_Silk_bwexpander.c \
+src/SKP_Silk_CNG.c \
+src/SKP_Silk_code_signs.c \
+src/SKP_Silk_control_codec_FIX.c \
+src/SKP_Silk_corrMatrix_FIX.c \
+src/SKP_Silk_create_init_destroy.c \
+src/SKP_Silk_dec_API.c \
+src/SKP_Silk_decode_core.c \
+src/SKP_Silk_decode_frame.c \
+src/SKP_Silk_decode_indices_v4.c \
+src/SKP_Silk_decode_parameters.c \
+src/SKP_Silk_decode_parameters_v4.c \
+src/SKP_Silk_decode_pulses.c \
+src/SKP_Silk_decoder_set_fs.c \
+src/SKP_Silk_detect_SWB_input.c \
+src/SKP_Silk_enc_API.c \
+src/SKP_Silk_encode_frame_FIX.c \
+src/SKP_Silk_encode_parameters.c \
+src/SKP_Silk_encode_parameters_v4.c \
+src/SKP_Silk_encode_pulses.c \
+src/SKP_Silk_find_LPC_FIX.c \
+src/SKP_Silk_find_LTP_FIX.c \
+src/SKP_Silk_find_pitch_lags_FIX.c \
+src/SKP_Silk_find_pred_coefs_FIX.c \
+src/SKP_Silk_gain_quant.c \
+src/SKP_Silk_HP_variable_cutoff_FIX.c \
+src/SKP_Silk_init_encoder_FIX.c \
+src/SKP_Silk_inner_prod_aligned.c \
+src/SKP_Silk_interpolate.c \
+src/SKP_Silk_k2a.c \
+src/SKP_Silk_k2a_Q16.c \
+src/SKP_Silk_LBRR_reset.c \
+src/SKP_Silk_lin2log.c \
+src/SKP_Silk_log2lin.c \
+src/SKP_Silk_lowpass_int.c \
+src/SKP_Silk_lowpass_short.c \
+src/SKP_Silk_LPC_inv_pred_gain.c \
+src/SKP_Silk_LPC_stabilize.c \
+src/SKP_Silk_LPC_synthesis_filter.c \
+src/SKP_Silk_LPC_synthesis_order16.c \
+src/SKP_Silk_LP_variable_cutoff.c \
+src/SKP_Silk_LSF_cos_table.c \
+src/SKP_Silk_LTP_analysis_filter_FIX.c \
+src/SKP_Silk_LTP_scale_ctrl_FIX.c \
+src/SKP_Silk_MA.c \
+src/SKP_Silk_NLSF2A.c \
+src/SKP_Silk_NLSF2A_stable.c \
+src/SKP_Silk_NLSF_MSVQ_decode.c \
+src/SKP_Silk_NLSF_MSVQ_encode_FIX.c \
+src/SKP_Silk_NLSF_stabilize.c \
+src/SKP_Silk_NLSF_VQ_rate_distortion_FIX.c \
+src/SKP_Silk_NLSF_VQ_sum_error_FIX.c \
+src/SKP_Silk_NLSF_VQ_weights_laroia.c \
+src/SKP_Silk_noise_shape_analysis_FIX.c \
+src/SKP_Silk_NSQ.c \
+src/SKP_Silk_NSQ_del_dec.c \
+src/SKP_Silk_pitch_analysis_core.c \
+src/SKP_Silk_pitch_est_tables.c \
+src/SKP_Silk_PLC.c \
+src/SKP_Silk_prefilter_FIX.c \
+src/SKP_Silk_process_gains_FIX.c \
+src/SKP_Silk_process_NLSFs_FIX.c \
+src/SKP_Silk_pulses_to_bytes.c \
+src/SKP_Silk_quant_LTP_gains_FIX.c \
+src/SKP_Silk_range_coder.c \
+src/SKP_Silk_regularize_correlations_FIX.c \
+src/SKP_Silk_resample_1_2.c \
+src/SKP_Silk_resample_1_2_coarse.c \
+src/SKP_Silk_resample_1_2_coarsest.c \
+src/SKP_Silk_resample_1_3.c \
+src/SKP_Silk_resample_2_1_coarse.c \
+src/SKP_Silk_resample_2_3.c \
+src/SKP_Silk_resample_2_3_coarse.c \
+src/SKP_Silk_resample_2_3_coarsest.c \
+src/SKP_Silk_resample_2_3_rom.c \
+src/SKP_Silk_resample_3_1.c \
+src/SKP_Silk_resample_3_2.c \
+src/SKP_Silk_resample_3_2_rom.c \
+src/SKP_Silk_resample_3_4.c \
+src/SKP_Silk_resample_4_3.c \
+src/SKP_Silk_residual_energy16_FIX.c \
+src/SKP_Silk_residual_energy_FIX.c \
+src/SKP_Silk_scale_copy_vector16.c \
+src/SKP_Silk_scale_vector.c \
+src/SKP_Silk_schur64.c \
+src/SKP_Silk_schur.c \
+src/SKP_Silk_shell_coder.c \
+src/SKP_Silk_sigm_Q15.c \
+src/SKP_Silk_solve_LS_FIX.c \
+src/SKP_Silk_sort.c \
+src/SKP_Silk_sum_sqr_shift.c \
+src/SKP_Silk_tables_gain.c \
+src/SKP_Silk_tables_LTP.c \
+src/SKP_Silk_tables_NLSF_CB0_10.c \
+src/SKP_Silk_tables_NLSF_CB0_16.c \
+src/SKP_Silk_tables_NLSF_CB1_10.c \
+src/SKP_Silk_tables_NLSF_CB1_16.c \
+src/SKP_Silk_tables_other.c \
+src/SKP_Silk_tables_pitch_lag.c \
+src/SKP_Silk_tables_pulses_per_block.c \
+src/SKP_Silk_tables_sign.c \
+src/SKP_Silk_tables_type_offset.c \
+src/SKP_Silk_VAD.c \
+src/SKP_Silk_VQ_nearest_neighbor_FIX.c
+
+
+libSKP_SILK_SDK_la_CFLAGS = $(AM_CFLAGS)
+libSKP_SILK_SDK_la_LDFLAGS = $(LIBS)
+
+library_includedir = $(prefix)/include/silk
+library_include_HEADERS = src/SKP_Silk_common_pitch_est_defines.h \
+src/SKP_Silk_define_FIX.h \
+src/SKP_Silk_define.h \
+src/SKP_Silk_Inlines.h \
+src/SKP_Silk_macros.h \
+src/SKP_Silk_main_FIX.h \
+src/SKP_Silk_main.h \
+src/SKP_Silk_perceptual_parameters_FIX.h \
+src/SKP_Silk_pitch_est_defines.h \
+src/SKP_Silk_PLC.h \
+src/SKP_Silk_resample_rom.h \
+src/SKP_Silk_SigProc_FIX.h \
+src/SKP_Silk_structs_FIX.h \
+src/SKP_Silk_structs.h \
+src/SKP_Silk_tables.h \
+src/SKP_Silk_tables_NLSF_CB0_10.h \
+src/SKP_Silk_tables_NLSF_CB0_16.h \
+src/SKP_Silk_tables_NLSF_CB1_10.h \
+src/SKP_Silk_tables_NLSF_CB1_16.h \
+interface/SKP_Silk_control.h \
+interface/SKP_Silk_errors.h \
+interface/SKP_Silk_SDK_API.h \
+interface/SKP_Silk_typedef.h
+
+bin_PROGRAMS = Encoder Decoder signalCompare
+Encoder_SOURCES = test/Encoder.c $(top_builddir)/interface/SKP_Silk_SDK_API.h
+Encoder_LDADD = $(lib_LTLIBRARIES)
+Encoder_LDFLAGS = $(LIBS)
+
+Decoder_SOURCES = test/Decoder.c $(top_builddir)/interface/SKP_Silk_SDK_API.h
+Decoder_LDADD = $(lib_LTLIBRARIES)
+Decoder_LDFLAGS = $(LIBS)
+
+signalCompare_SOURCES = test/signalCompare.c $(top_builddir)/interface/SKP_Silk_SDK_API.h
+signalCompare_LDADD = $(lib_LTLIBRARIES)
+signalCompare_LDFLAGS = $(LIBS)
--- /dev/null
+++ b/Silk_SDK.sln
@@ -1,0 +1,44 @@
+
+Microsoft Visual Studio Solution File, Format Version 9.00
+# Visual Studio 2005
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "Silk_FIX", "src\Silk_FIX.vcproj", "{56B91D01-9150-4BBF-AFA1-5B68AB991B76}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "Dec_SDK", "test\Dec_SDK.vcproj", "{82685D7F-0589-42BD-877C-31A952D53A8E}"
+ ProjectSection(ProjectDependencies) = postProject
+ {56B91D01-9150-4BBF-AFA1-5B68AB991B76} = {56B91D01-9150-4BBF-AFA1-5B68AB991B76}
+ EndProjectSection
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "SignalCompare", "test\SignalCompare.vcproj", "{7FE8F544-9175-40C3-A187-7F15CE9A75D8}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "Enc_SDK", "test\Enc_SDK.vcproj", "{6D97A8EF-5724-4D85-8BF4-C583714BBA78}"
+ ProjectSection(ProjectDependencies) = postProject
+ {56B91D01-9150-4BBF-AFA1-5B68AB991B76} = {56B91D01-9150-4BBF-AFA1-5B68AB991B76}
+ EndProjectSection
+EndProject
+Global
+ GlobalSection(SolutionConfigurationPlatforms) = preSolution
+ Debug|Win32 = Debug|Win32
+ Release|Win32 = Release|Win32
+ EndGlobalSection
+ GlobalSection(ProjectConfigurationPlatforms) = postSolution
+ {56B91D01-9150-4BBF-AFA1-5B68AB991B76}.Debug|Win32.ActiveCfg = Debug|Win32
+ {56B91D01-9150-4BBF-AFA1-5B68AB991B76}.Debug|Win32.Build.0 = Debug|Win32
+ {56B91D01-9150-4BBF-AFA1-5B68AB991B76}.Release|Win32.ActiveCfg = Release|Win32
+ {56B91D01-9150-4BBF-AFA1-5B68AB991B76}.Release|Win32.Build.0 = Release|Win32
+ {82685D7F-0589-42BD-877C-31A952D53A8E}.Debug|Win32.ActiveCfg = Debug|Win32
+ {82685D7F-0589-42BD-877C-31A952D53A8E}.Debug|Win32.Build.0 = Debug|Win32
+ {82685D7F-0589-42BD-877C-31A952D53A8E}.Release|Win32.ActiveCfg = Release|Win32
+ {82685D7F-0589-42BD-877C-31A952D53A8E}.Release|Win32.Build.0 = Release|Win32
+ {7FE8F544-9175-40C3-A187-7F15CE9A75D8}.Debug|Win32.ActiveCfg = Debug|Win32
+ {7FE8F544-9175-40C3-A187-7F15CE9A75D8}.Debug|Win32.Build.0 = Debug|Win32
+ {7FE8F544-9175-40C3-A187-7F15CE9A75D8}.Release|Win32.ActiveCfg = Release|Win32
+ {7FE8F544-9175-40C3-A187-7F15CE9A75D8}.Release|Win32.Build.0 = Release|Win32
+ {6D97A8EF-5724-4D85-8BF4-C583714BBA78}.Debug|Win32.ActiveCfg = Debug|Win32
+ {6D97A8EF-5724-4D85-8BF4-C583714BBA78}.Debug|Win32.Build.0 = Debug|Win32
+ {6D97A8EF-5724-4D85-8BF4-C583714BBA78}.Release|Win32.ActiveCfg = Release|Win32
+ {6D97A8EF-5724-4D85-8BF4-C583714BBA78}.Release|Win32.Build.0 = Release|Win32
+ EndGlobalSection
+ GlobalSection(SolutionProperties) = preSolution
+ HideSolutionNode = FALSE
+ EndGlobalSection
+EndGlobal
--- /dev/null
+++ b/configure.gnu
@@ -1,0 +1,4 @@
+#! /bin/sh
+srcpath=$(dirname $0 2>/dev/null ) || srcpath="."
+$srcpath/configure "$@" --disable-shared --with-pic
+
--- /dev/null
+++ b/configure.in
@@ -1,0 +1,26 @@
+# -*- Autoconf -*-
+# Process this file with autoconf to produce a configure script.
+
+AC_PREREQ([2.59])
+AC_INIT(libSKP_SILK_SDK, 1.0.2, [email protected], libSKP_SILK_SDK)
+AM_INIT_AUTOMAKE(libSKP_SILK_SDK,1.0.2)
+
+# Checks for programs.
+AC_PROG_CC
+AC_PROG_LIBTOOL
+
+# Checks for header files.
+AC_HEADER_STDC
+AC_CHECK_HEADERS([float.h stdint.h stdlib.h string.h])
+
+# Checks for typedefs, structures, and compiler characteristics.
+AC_C_CONST
+AC_C_INLINE
+AC_TYPE_SIZE_T
+
+# Checks for library functions.
+AC_FUNC_MALLOC
+AC_CHECK_LIB([m],[pow])
+
+AC_CONFIG_FILES([Makefile])
+AC_OUTPUT
--- /dev/null
+++ b/interface/SKP_Silk_SDK_API.h
@@ -1,0 +1,154 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#ifndef SKP_SILK_SDK_API_H
+#define SKP_SILK_SDK_API_H
+
+#include "SKP_Silk_control.h"
+#include "SKP_Silk_typedef.h"
+#include "SKP_Silk_errors.h"
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#define SILK_MAX_FRAMES_PER_PACKET 5
+
+/* Struct for TOC (Table Of Contents) */
+typedef struct {
+ SKP_int framesInPacket; /* Number of 20 ms frames in packet */
+ SKP_int fs_kHz; /* Sampling frequency in packet */
+ SKP_int inbandLBRR; /* Does packet contain LBRR information */
+ SKP_int corrupt; /* Packet is corrupt */
+ SKP_int vadFlags[ SILK_MAX_FRAMES_PER_PACKET ]; /* VAD flag for each frame in packet */
+ SKP_int sigtypeFlags[ SILK_MAX_FRAMES_PER_PACKET ]; /* Signal type for each frame in packet */
+} SKP_Silk_TOC_struct;
+
+/****************************************/
+/* Encoder functions */
+/****************************************/
+
+/***********************************************/
+/* Get size in bytes of the Silk encoder state */
+/***********************************************/
+SKP_int SKP_Silk_SDK_Get_Encoder_Size(
+ SKP_int32 *encSizeBytes /* O: Number of bytes in SILK encoder state */
+);
+
+/*************************/
+/* Init or reset encoder */
+/*************************/
+SKP_int SKP_Silk_SDK_InitEncoder(
+ void *encState, /* I/O: State */
+ SKP_SILK_SDK_EncControlStruct *encStatus /* O: Encoder Status */
+);
+
+/***************************************/
+/* Read control structure from encoder */
+/***************************************/
+SKP_int SKP_Silk_SDK_QueryEncoder(
+ const void *encState, /* I: State */
+ SKP_SILK_SDK_EncControlStruct *encStatus /* O: Encoder Status */
+);
+
+/**************************/
+/* Encode frame with Silk */
+/**************************/
+SKP_int SKP_Silk_SDK_Encode(
+ void *encState, /* I/O: State */
+ const SKP_SILK_SDK_EncControlStruct *encControl, /* I: Control status */
+ const SKP_int16 *samplesIn, /* I: Speech sample input vector */
+ SKP_int nSamplesIn, /* I: Number of samples in input vector */
+ SKP_uint8 *outData, /* O: Encoded output vector */
+ SKP_int16 *nBytesOut /* I/O: Number of Bytes in outData (input: Max Bytes) */
+);
+
+/****************************************/
+/* Decoder functions */
+/****************************************/
+
+/***********************************************/
+/* Get size in bytes of the Silk decoder state */
+/***********************************************/
+SKP_int SKP_Silk_SDK_Get_Decoder_Size(
+ SKP_int32 *decSizeBytes /* O: Number of bytes in SILK decoder state */
+);
+
+/*************************/
+/* Init or Reset decoder */
+/*************************/
+SKP_int SKP_Silk_SDK_InitDecoder(
+ void *decState /* I/O: State */
+);
+
+/******************/
+/* Decode a frame */
+/******************/
+SKP_int SKP_Silk_SDK_Decode(
+ void* decState, /* I/O: State */
+ SKP_SILK_SDK_DecControlStruct* decControl, /* I/O: Control Structure */
+ SKP_int lostFlag, /* I: 0: no loss, 1 loss */
+ const SKP_uint8 *inData, /* I: Encoded input vector */
+ const SKP_int nBytesIn, /* I: Number of input Bytes */
+ SKP_int16 *samplesOut, /* O: Decoded output speech vector */
+ SKP_int16 *nSamplesOut /* I/O: Number of samples (vector/decoded) */
+);
+
+/***************************************************************/
+/* Find Low Bit Rate Redundancy (LBRR) information in a packet */
+/***************************************************************/
+void SKP_Silk_SDK_search_for_LBRR(
+ void *decState, /* I: Decoder state, to select bitstream version only */
+ const SKP_uint8 *inData, /* I: Encoded input vector */
+ const SKP_int16 nBytesIn, /* I: Number of input Bytes */
+ SKP_int lost_offset, /* I: Offset from lost packet */
+ SKP_uint8 *LBRRData, /* O: LBRR payload */
+ SKP_int16 *nLBRRBytes /* O: Number of LBRR Bytes */
+);
+
+/************************************/
+/* Get type of content for a packet */
+/************************************/
+void SKP_Silk_SDK_get_TOC(
+ void *decState, /* I: Decoder state, to select bitstream version only */
+ const SKP_uint8 *inData, /* I: Encoded input vector */
+ const SKP_int16 nBytesIn, /* I: Number of input bytes */
+ SKP_Silk_TOC_struct *Silk_TOC /* O: Type of content */
+);
+
+/**************************/
+/* Get the version number */
+/**************************/
+/* Return a pointer to string specifying the version */
+const char *SKP_Silk_SDK_get_version();
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
--- /dev/null
+++ b/interface/SKP_Silk_control.h
@@ -1,0 +1,88 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#ifndef SKP_SILK_CONTROL_H
+#define SKP_SILK_CONTROL_H
+
+#include "SKP_Silk_typedef.h"
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+/***********************************************/
+/* Structure for controlling encoder operation */
+/***********************************************/
+typedef struct {
+ /* I: Sampling rate in Hertz; 8000/12000/16000/24000 */
+ SKP_int32 sampleRate;
+
+ /* I: Number of samples per packet; must be equivalent of 20, 40, 60, 80 or 100 ms */
+ SKP_int packetSize;
+
+ /* I: Bitrate during active speech in bits/second; internally limited */
+ SKP_int32 bitRate;
+
+ /* I: Uplink Packet loss in pct (0...100) */
+ SKP_int packetLossPercentage;
+
+ /* I: Complexity mode; 0 is lowest; 1 is medium and 2 is highest complexity */
+ SKP_int complexity;
+
+ /* I: Flag to enable in-band Forward Error Correction (FEC); 0/1 */
+ SKP_int useInBandFEC;
+
+ /* I: Flag to enable Discontinous Transmission; 0/1 */
+ SKP_int useDTX;
+} SKP_SILK_SDK_EncControlStruct;
+
+/**************************************************************************/
+/* Structure for controlling decoder operation and reading decoder status */
+/**************************************************************************/
+typedef struct {
+ /* I: Sampling rate in Hertz; 8000/12000/16000/24000 */
+ SKP_int32 sampleRate;
+
+ /* O: Number of samples per frame */
+ SKP_int frameSize;
+
+ /* O: Frames per packet 1, 2, 3, 4, 5 */
+ SKP_int framesPerPacket;
+
+ /* O: Flag to indicate that the decoder has remaining payloads internally */
+ SKP_int moreInternalDecoderFrames;
+
+ /* O: Distance between main payload and redundant payload in packets */
+ SKP_int inBandFECOffset;
+} SKP_SILK_SDK_DecControlStruct;
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
--- /dev/null
+++ b/interface/SKP_Silk_errors.h
@@ -1,0 +1,93 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#ifndef SKP_SILK_ERRORS_H
+#define SKP_SILK_ERRORS_H
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+/******************/
+/* Error messages */
+/******************/
+#define SKP_SILK_NO_ERROR 0
+
+/**************************/
+/* Encoder error messages */
+/**************************/
+
+/* Input length is not a multiplum of 10 ms,
+ or length is longer than the packet length */
+#define SKP_SILK_ENC_INPUT_INVALID_NO_OF_SAMPLES -1
+
+/* Sampling frequency not 8000, 12000, 16000
+ or 24000 Hertz */
+#define SKP_SILK_ENC_FS_NOT_SUPPORTED -2
+
+/* Packet size not 20, 40, 60, 80 or 100 ms */
+#define SKP_SILK_ENC_PACKET_SIZE_NOT_SUPPORTED -3
+
+/* Allocated payload buffer too short */
+#define SKP_SILK_ENC_PAYLOAD_BUF_TOO_SHORT -4
+
+/* Loss rate not between 0 and 100 percent */
+#define SKP_SILK_ENC_WRONG_LOSS_RATE -5
+
+/* Complexity setting not valid, use 0, 1 or 2 */
+#define SKP_SILK_ENC_WRONG_COMPLEXITY_SETTING -6
+
+/* Inband FEC setting not valid, use 0 or 1 */
+#define SKP_SILK_ENC_WRONG_INBAND_FEC_SETTING -7
+
+/* DTX setting not valid, use 0 or 1 */
+#define SKP_SILK_ENC_WRONG_DTX_SETTING -8
+
+/* Internal encoder error */
+#define SKP_SILK_ENC_INTERNAL_ERROR -9
+
+/**************************/
+/* Decoder error messages */
+/**************************/
+
+/* Output sampling frequency lower than internal
+ decoded sampling frequency */
+#define SKP_SILK_DEC_WRONG_SAMPLING_FREQUENCY -10
+
+/* Payload size exceeded the maximum allowed 1024 bytes */
+#define SKP_SILK_DEC_PAYLOAD_TOO_LARGE -11
+
+/* Payload has bit errors */
+#define SKP_SILK_DEC_PAYLOAD_ERROR -12
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
--- /dev/null
+++ b/interface/SKP_Silk_typedef.h
@@ -1,0 +1,99 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#ifndef _SKP_SILK_API_TYPDEF_H_
+#define _SKP_SILK_API_TYPDEF_H_
+
+#ifndef SKP_USE_DOUBLE_PRECISION_FLOATS
+#define SKP_USE_DOUBLE_PRECISION_FLOATS 0
+#endif
+
+#include <float.h>
+#if defined( __GNUC__ )
+#include <stdint.h>
+#endif
+
+#define SKP_int int /* used for counters etc; at least 16 bits */
+#define SKP_int64 long long
+#define SKP_int32 int
+#define SKP_int16 short
+#define SKP_int8 signed char
+
+#define SKP_uint unsigned int /* used for counters etc; at least 16 bits */
+#define SKP_uint64 unsigned long long
+#define SKP_uint32 unsigned int
+#define SKP_uint16 unsigned short
+#define SKP_uint8 unsigned char
+
+#define SKP_int_ptr_size intptr_t
+
+#if SKP_USE_DOUBLE_PRECISION_FLOATS
+# define SKP_float double
+# define SKP_float_MAX DBL_MAX
+#else
+# define SKP_float float
+# define SKP_float_MAX FLT_MAX
+#endif
+
+#define SKP_INLINE static __inline
+
+#ifdef _WIN32
+# define SKP_STR_CASEINSENSITIVE_COMPARE(x, y) _stricmp(x, y)
+#else
+# define SKP_STR_CASEINSENSITIVE_COMPARE(x, y) strcasecmp(x, y)
+#endif
+
+#define SKP_int64_MAX ((SKP_int64)0x7FFFFFFFFFFFFFFFLL) // 2^63 - 1
+#define SKP_int64_MIN ((SKP_int64)0x8000000000000000LL) // -2^63
+#define SKP_int32_MAX 0x7FFFFFFF // 2^31 - 1 = 2147483647
+#define SKP_int32_MIN ((SKP_int32)0x80000000) // -2^31 = -2147483648
+#define SKP_int16_MAX 0x7FFF // 2^15 - 1 = 32767
+#define SKP_int16_MIN ((SKP_int16)0x8000) // -2^15 = -32768
+#define SKP_int8_MAX 0x7F // 2^7 - 1 = 127
+#define SKP_int8_MIN ((SKP_int8)0x80) // -2^7 = -128
+
+#define SKP_uint32_MAX 0xFFFFFFFF // 2^32 - 1 = 4294967295
+#define SKP_uint32_MIN 0x00000000
+#define SKP_uint16_MAX 0xFFFF // 2^16 - 1 = 65535
+#define SKP_uint16_MIN 0x0000
+#define SKP_uint8_MAX 0xFF // 2^8 - 1 = 255
+#define SKP_uint8_MIN 0x00
+
+#define SKP_TRUE 1
+#define SKP_FALSE 0
+
+/* assertions */
+#if (defined _WIN32 && !defined _WINCE && !defined(__GNUC__) && !defined(NO_ASSERTS))
+# ifndef SKP_assert
+# include <crtdbg.h> /* ASSERTE() */
+# define SKP_assert(COND) _ASSERTE(COND)
+# endif
+#else
+# define SKP_assert(COND)
+#endif
+
+#endif
--- /dev/null
+++ b/readme.txt
@@ -1,0 +1,80 @@
+************************************************************************
+Fixed Point SILK SDK 1.0.2 beta source code package
+Copyright 2010 (c), Skype Limited
+https://developer.skype.com/silk/
+************************************************************************
+
+Date: 09/03/2010 (Format: DD/MM/YYYY)
+
+I. Description
+
+This package contains files for compiling and testing the fixed
+point SILK SDK library. The following is included in this package:
+
+ o Source code for the fixed point SILK SDK library
+ o Source code for creating encoder and decoder executables
+ o Test vectors
+ o Comparison tool
+ o Microsoft Visual Studio solution and project files
+ o Makefile for GNU C-compiler (GCC)
+
+II. Files and Folders
+
+ o doc/ - contains more information about the SILK SDK
+ o interface/ - contains API header files
+ o src/ - contains all SILK SDK library source files
+ o test/ - contains source files for testing the SILK SDK
+ o test_vectors/ - contains test vectors
+ o Makefile - Makefile for compiling with GCC
+ o readme.txt - this file
+ o Silk_SDK.sln - Visual Studio solution for all SILK SDK code
+
+III. How to use the Makefile
+
+ 1. How to clean and compile the SILK SDK library:
+
+ make clean lib
+
+ 2. How to compile an encoder executable:
+
+ make encoder
+
+ 3. How to compile a decoder executable:
+
+ make decoder
+
+ 4. How to compile the comparison tool:
+
+ make signalcompare
+
+ 5. How to clean and compile all of the above:
+
+ make clean all
+
+ 6. How to use the comparison tool:
+
+ See 'How to use the test vectors.txt' in the test_vectors folder.
+
+IV. History
+
+ Version 1.0.2 - Updated with various bugfixes and improvements
+ Version 1.0.1 - First beta source code release
+
+V. Compatibility
+
+ This package has been tested under the following platforms:
+
+ Windows XP Home and Professional
+ Windows Vista, 32-bit version
+ Mac OS X Version 10.5.8
+ Ubuntu Linux 9.10, 64-bit version
+
+VI. Known Issues
+
+ None
+
+VII. Additional Resources
+
+ For more information, visit the SILK SDK web site at:
+
+ <https://developer.skype.com/silk/>
--- /dev/null
+++ b/src/SKP_Silk_A2NLSF.c
@@ -1,0 +1,280 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+/* Conversion between prediction filter coefficients and NLSFs */
+/* Requires the order to be an even number */
+/* A piecewise linear approximation maps LSF <-> cos(LSF) */
+/* Therefore the result is not accurate NLSFs, but the two */
+/* function are accurate inverses of each other */
+
+#include "SKP_Silk_SigProc_FIX.h"
+
+/* Number of binary divisions, when not in low complexity mode */
+#define BIN_DIV_STEPS_A2NLSF_FIX 2 /* must be no higher than 16 - log2( LSF_COS_TAB_SZ_FIX ) */
+#define QPoly 16
+#define MAX_ITERATIONS_A2NLSF_FIX 50
+
+/* Flag for using 2x as many cosine sampling points, reduces the risk of missing a root */
+#define OVERSAMPLE_COSINE_TABLE 0
+
+/* Helper function for A2NLSF(..) */
+/* Transforms polynomials from cos(n*f) to cos(f)^n */
+SKP_INLINE void SKP_Silk_A2NLSF_trans_poly(
+ SKP_int32 *p, /* I/O Polynomial */
+ const SKP_int dd /* I Polynomial order (= filter order / 2 ) */
+)
+{
+ SKP_int k, n;
+
+ for( k = 2; k <= dd; k++ ) {
+ for( n = dd; n > k; n-- ) {
+ p[ n - 2 ] -= p[ n ];
+ }
+ p[ k - 2 ] -= SKP_LSHIFT( p[ k ], 1 );
+ }
+}
+
+/* Helper function for A2NLSF(..) */
+/* Polynomial evaluation */
+SKP_INLINE SKP_int32 SKP_Silk_A2NLSF_eval_poly( /* return the polynomial evaluation, in QPoly */
+ SKP_int32 *p, /* I Polynomial, QPoly */
+ const SKP_int32 x, /* I Evaluation point, Q12 */
+ const SKP_int dd /* I Order */
+)
+{
+ SKP_int n;
+ SKP_int32 x_Q16, y32;
+
+ y32 = p[ dd ]; /* QPoly */
+ x_Q16 = SKP_LSHIFT( x, 4 );
+ for( n = dd - 1; n >= 0; n-- ) {
+ y32 = SKP_SMLAWW( p[ n ], y32, x_Q16 ); /* QPoly */
+ }
+ return y32;
+}
+
+SKP_INLINE void SKP_Silk_A2NLSF_init(
+ const SKP_int32 *a_Q16,
+ SKP_int32 *P,
+ SKP_int32 *Q,
+ const SKP_int dd
+)
+{
+ SKP_int k;
+
+ /* Convert filter coefs to even and odd polynomials */
+ P[dd] = SKP_LSHIFT( 1, QPoly );
+ Q[dd] = SKP_LSHIFT( 1, QPoly );
+ for( k = 0; k < dd; k++ ) {
+#if( QPoly < 16 )
+ P[ k ] = SKP_RSHIFT_ROUND( -a_Q16[ dd - k - 1 ] - a_Q16[ dd + k ], 16 - QPoly ); /* QPoly */
+ Q[ k ] = SKP_RSHIFT_ROUND( -a_Q16[ dd - k - 1 ] + a_Q16[ dd + k ], 16 - QPoly ); /* QPoly */
+#elif( Qpoly == 16 )
+ P[ k ] = -a_Q16[ dd - k - 1 ] - a_Q16[ dd + k ]; // QPoly
+ Q[ k ] = -a_Q16[ dd - k - 1 ] + a_Q16[ dd + k ]; // QPoly
+#else
+ P[ k ] = SKP_LSHIFT( -a_Q16[ dd - k - 1 ] - a_Q16[ dd + k ], QPoly - 16 ); /* QPoly */
+ Q[ k ] = SKP_LSHIFT( -a_Q16[ dd - k - 1 ] + a_Q16[ dd + k ], QPoly - 16 ); /* QPoly */
+#endif
+ }
+
+ /* Divide out zeros as we have that for even filter orders, */
+ /* z = 1 is always a root in Q, and */
+ /* z = -1 is always a root in P */
+ for( k = dd; k > 0; k-- ) {
+ P[ k - 1 ] -= P[ k ];
+ Q[ k - 1 ] += Q[ k ];
+ }
+
+ /* Transform polynomials from cos(n*f) to cos(f)^n */
+ SKP_Silk_A2NLSF_trans_poly( P, dd );
+ SKP_Silk_A2NLSF_trans_poly( Q, dd );
+}
+
+/* Compute Normalized Line Spectral Frequencies (NLSFs) from whitening filter coefficients */
+/* If not all roots are found, the a_Q16 coefficients are bandwidth expanded until convergence. */
+void SKP_Silk_A2NLSF(
+ SKP_int *NLSF, /* O Normalized Line Spectral Frequencies, Q15 (0 - (2^15-1)), [d] */
+ SKP_int32 *a_Q16, /* I/O Monic whitening filter coefficients in Q16 [d] */
+ const SKP_int d /* I Filter order (must be even) */
+)
+{
+ SKP_int i, k, m, dd, root_ix, ffrac;
+ SKP_int32 xlo, xhi, xmid;
+ SKP_int32 ylo, yhi, ymid;
+ SKP_int32 nom, den;
+ SKP_int32 P[ SigProc_MAX_ORDER_LPC / 2 + 1 ];
+ SKP_int32 Q[ SigProc_MAX_ORDER_LPC / 2 + 1 ];
+ SKP_int32 *PQ[ 2 ];
+ SKP_int32 *p;
+
+ /* Store pointers to array */
+ PQ[ 0 ] = P;
+ PQ[ 1 ] = Q;
+
+ dd = SKP_RSHIFT( d, 1 );
+
+ SKP_Silk_A2NLSF_init( a_Q16, P, Q, dd );
+
+ /* Find roots, alternating between P and Q */
+ p = P; /* Pointer to polynomial */
+
+ xlo = SKP_Silk_LSFCosTab_FIX_Q12[ 0 ]; // Q12
+ ylo = SKP_Silk_A2NLSF_eval_poly( p, xlo, dd );
+
+ if( ylo < 0 ) {
+ /* Set the first NLSF to zero and move on to the next */
+ NLSF[ 0 ] = 0;
+ p = Q; /* Pointer to polynomial */
+ ylo = SKP_Silk_A2NLSF_eval_poly( p, xlo, dd );
+ root_ix = 1; /* Index of current root */
+ } else {
+ root_ix = 0; /* Index of current root */
+ }
+ k = 1; /* Loop counter */
+ i = 0; /* Counter for bandwidth expansions applied */
+ while( 1 ) {
+ /* Evaluate polynomial */
+#if OVERSAMPLE_COSINE_TABLE
+ xhi = SKP_Silk_LSFCosTab_FIX_Q12[ k >> 1 ] +
+ ( ( SKP_Silk_LSFCosTab_FIX_Q12[ ( k + 1 ) >> 1 ] -
+ SKP_Silk_LSFCosTab_FIX_Q12[ k >> 1 ] ) >> 1 ); /* Q12 */
+#else
+ xhi = SKP_Silk_LSFCosTab_FIX_Q12[ k ]; /* Q12 */
+#endif
+ yhi = SKP_Silk_A2NLSF_eval_poly( p, xhi, dd );
+
+ /* Detect zero crossing */
+ if( ( ylo <= 0 && yhi >= 0 ) || ( ylo >= 0 && yhi <= 0 ) ) {
+ /* Binary division */
+#if OVERSAMPLE_COSINE_TABLE
+ ffrac = -128;
+#else
+ ffrac = -256;
+#endif
+ for( m = 0; m < BIN_DIV_STEPS_A2NLSF_FIX; m++ ) {
+ /* Evaluate polynomial */
+ xmid = SKP_RSHIFT_ROUND( xlo + xhi, 1 );
+ ymid = SKP_Silk_A2NLSF_eval_poly( p, xmid, dd );
+
+ /* Detect zero crossing */
+ if( ( ylo <= 0 && ymid >= 0 ) || ( ylo >= 0 && ymid <= 0 ) ) {
+ /* Reduce frequency */
+ xhi = xmid;
+ yhi = ymid;
+ } else {
+ /* Increase frequency */
+ xlo = xmid;
+ ylo = ymid;
+#if OVERSAMPLE_COSINE_TABLE
+ ffrac = SKP_ADD_RSHIFT( ffrac, 64, m );
+#else
+ ffrac = SKP_ADD_RSHIFT( ffrac, 128, m );
+#endif
+ }
+ }
+
+ /* Interpolate */
+ if( SKP_abs( ylo ) < 65536 ) {
+ /* Avoid dividing by zero */
+ den = ylo - yhi;
+ nom = SKP_LSHIFT( ylo, 8 - BIN_DIV_STEPS_A2NLSF_FIX ) + SKP_RSHIFT( den, 1 );
+ if( den != 0 ) {
+ ffrac += SKP_DIV32( nom, den );
+ }
+ } else {
+ /* No risk of dividing by zero because abs(ylo - yhi) >= abs(ylo) >= 65536 */
+ ffrac += SKP_DIV32( ylo, SKP_RSHIFT( ylo - yhi, 8 - BIN_DIV_STEPS_A2NLSF_FIX ) );
+ }
+#if OVERSAMPLE_COSINE_TABLE
+ NLSF[ root_ix ] = (SKP_int)SKP_min_32( SKP_LSHIFT( (SKP_int32)k, 7 ) + ffrac, SKP_int16_MAX );
+#else
+ NLSF[ root_ix ] = (SKP_int)SKP_min_32( SKP_LSHIFT( (SKP_int32)k, 8 ) + ffrac, SKP_int16_MAX );
+#endif
+
+ SKP_assert( NLSF[ root_ix ] >= 0 );
+ SKP_assert( NLSF[ root_ix ] <= 32767 );
+
+ root_ix++; /* Next root */
+ if( root_ix >= d ) {
+ /* Found all roots */
+ break;
+ }
+ /* Alternate pointer to polynomial */
+ p = PQ[ root_ix & 1 ];
+
+ /* Evaluate polynomial */
+#if OVERSAMPLE_COSINE_TABLE
+ xlo = SKP_Silk_LSFCosTab_FIX_Q12[ ( k - 1 ) >> 1 ] +
+ ( ( SKP_Silk_LSFCosTab_FIX_Q12[ k >> 1 ] -
+ SKP_Silk_LSFCosTab_FIX_Q12[ ( k - 1 ) >> 1 ] ) >> 1 ); // Q12
+#else
+ xlo = SKP_Silk_LSFCosTab_FIX_Q12[ k - 1 ]; // Q12
+#endif
+ ylo = SKP_LSHIFT( 1 - ( root_ix & 2 ), 12 );
+ } else {
+ /* Increment loop counter */
+ k++;
+ xlo = xhi;
+ ylo = yhi;
+
+#if OVERSAMPLE_COSINE_TABLE
+ if( k > 2 * LSF_COS_TAB_SZ_FIX ) {
+#else
+ if( k > LSF_COS_TAB_SZ_FIX ) {
+#endif
+ i++;
+ if( i > MAX_ITERATIONS_A2NLSF_FIX ) {
+ /* Set NLSFs to white spectrum and exit */
+ NLSF[ 0 ] = SKP_DIV32_16( 1 << 15, d + 1 );
+ for( k = 1; k < d; k++ ) {
+ NLSF[ k ] = SKP_SMULBB( k + 1, NLSF[ 0 ] );
+ }
+ return;
+ }
+
+ /* Error: Apply progressively more bandwidth expansion and run again */
+ SKP_Silk_bwexpander_32( a_Q16, d, 65536 - SKP_SMULBB( 66, i ) ); // 66_Q16 = 0.001
+
+ SKP_Silk_A2NLSF_init( a_Q16, P, Q, dd );
+ p = P; /* Pointer to polynomial */
+ xlo = SKP_Silk_LSFCosTab_FIX_Q12[ 0 ]; // Q12
+ ylo = SKP_Silk_A2NLSF_eval_poly( p, xlo, dd );
+ if( ylo < 0 ) {
+ /* Set the first NLSF to zero and move on to the next */
+ NLSF[ 0 ] = 0;
+ p = Q; /* Pointer to polynomial */
+ ylo = SKP_Silk_A2NLSF_eval_poly( p, xlo, dd );
+ root_ix = 1; /* Index of current root */
+ } else {
+ root_ix = 0; /* Index of current root */
+ }
+ k = 1; /* Reset loop counter */
+ }
+ }
+ }
+}
--- /dev/null
+++ b/src/SKP_Silk_CNG.c
@@ -1,0 +1,149 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_main_FIX.h"
+
+/* Generates excitation for CNG LPC synthesis */
+SKP_INLINE void SKP_Silk_CNG_exc(
+ SKP_int16 residual[], /* O CNG residual signal Q0 */
+ SKP_int32 exc_buf_Q10[], /* I Random samples buffer Q10 */
+ SKP_int32 Gain_Q16, /* I Gain to apply */
+ SKP_int length, /* I Length */
+ SKP_int32 *rand_seed /* I/O Seed to random index generator */
+)
+{
+ SKP_int32 seed;
+ SKP_int i, idx, exc_mask;
+
+ exc_mask = CNG_BUF_MASK_MAX;
+ while( exc_mask > length ) {
+ exc_mask = SKP_RSHIFT( exc_mask, 1 );
+ }
+
+ seed = *rand_seed;
+ for( i = 0; i < length; i++ ) {
+ seed = SKP_RAND( seed );
+ idx = ( SKP_int )( SKP_RSHIFT( seed, 24 ) & exc_mask );
+ SKP_assert( idx >= 0 );
+ SKP_assert( idx <= CNG_BUF_MASK_MAX );
+ residual[ i ] = ( SKP_int16 )SKP_SAT16( SKP_RSHIFT_ROUND( SKP_SMULWW( exc_buf_Q10[ idx ], Gain_Q16 ), 10 ) );
+ }
+ *rand_seed = seed;
+}
+
+void SKP_Silk_CNG_Reset(
+ SKP_Silk_decoder_state *psDec /* I/O Decoder state */
+)
+{
+ SKP_int i, NLSF_step_Q15, NLSF_acc_Q15;
+
+ NLSF_step_Q15 = SKP_DIV32_16( SKP_int16_MAX, psDec->LPC_order + 1 );
+ NLSF_acc_Q15 = 0;
+ for( i = 0; i < psDec->LPC_order; i++ ) {
+ NLSF_acc_Q15 += NLSF_step_Q15;
+ psDec->sCNG.CNG_smth_NLSF_Q15[ i ] = NLSF_acc_Q15;
+ }
+ psDec->sCNG.CNG_smth_Gain_Q16 = 0;
+ psDec->sCNG.rand_seed = 3176576;
+}
+
+/* Updates CNG estimate, and applies the CNG when packet was lost */
+void SKP_Silk_CNG(
+ SKP_Silk_decoder_state *psDec, /* I/O Decoder state */
+ SKP_Silk_decoder_control *psDecCtrl, /* I/O Decoder control */
+ SKP_int16 signal[], /* I/O Signal */
+ SKP_int length /* I Length of residual */
+)
+{
+ SKP_int i, subfr;
+ SKP_int32 tmp_32, Gain_Q26, max_Gain_Q16;
+ SKP_int16 LPC_buf[ MAX_LPC_ORDER ];
+ SKP_int16 CNG_sig[ MAX_FRAME_LENGTH ];
+ SKP_Silk_CNG_struct *psCNG;
+ psCNG = &psDec->sCNG;
+
+ if( psDec->fs_kHz != psCNG->fs_kHz ) {
+ /* Reset state */
+ SKP_Silk_CNG_Reset( psDec );
+
+ psCNG->fs_kHz = psDec->fs_kHz;
+ }
+ if( psDec->lossCnt == 0 && psDec->vadFlag == NO_VOICE_ACTIVITY ) {
+ /* Update CNG parameters */
+
+ /* Smoothing of LSF's */
+ for( i = 0; i < psDec->LPC_order; i++ ) {
+ psCNG->CNG_smth_NLSF_Q15[ i ] += SKP_SMULWB( psDec->prevNLSF_Q15[ i ] - psCNG->CNG_smth_NLSF_Q15[ i ], CNG_NLSF_SMTH_Q16 );
+ }
+ /* Find the subframe with the highest gain */
+ max_Gain_Q16 = 0;
+ subfr = 0;
+ for( i = 0; i < NB_SUBFR; i++ ) {
+ if( psDecCtrl->Gains_Q16[ i ] > max_Gain_Q16 ) {
+ max_Gain_Q16 = psDecCtrl->Gains_Q16[ i ];
+ subfr = i;
+ }
+ }
+ /* Update CNG excitation buffer with excitation from this subframe */
+ SKP_memmove( &psCNG->CNG_exc_buf_Q10[ psDec->subfr_length ], psCNG->CNG_exc_buf_Q10, ( NB_SUBFR - 1 ) * psDec->subfr_length * sizeof( SKP_int32 ) );
+ SKP_memcpy( psCNG->CNG_exc_buf_Q10, &psDec->exc_Q10[ subfr * psDec->subfr_length ], psDec->subfr_length * sizeof( SKP_int32 ) );
+
+ /* Smooth gains */
+ for( i = 0; i < NB_SUBFR; i++ ) {
+ psCNG->CNG_smth_Gain_Q16 += SKP_SMULWB( psDecCtrl->Gains_Q16[ i ] - psCNG->CNG_smth_Gain_Q16, CNG_GAIN_SMTH_Q16 );
+ }
+ }
+
+ /* Add CNG when packet is lost and / or when low speech activity */
+ if( psDec->lossCnt ) {//|| psDec->vadFlag == NO_VOICE_ACTIVITY ) {
+
+ /* Generate CNG excitation */
+ SKP_Silk_CNG_exc( CNG_sig, psCNG->CNG_exc_buf_Q10,
+ psCNG->CNG_smth_Gain_Q16, length, &psCNG->rand_seed );
+
+ /* Convert CNG NLSF to filter representation */
+ SKP_Silk_NLSF2A_stable( LPC_buf, psCNG->CNG_smth_NLSF_Q15, psDec->LPC_order );
+
+ Gain_Q26 = ( SKP_int32 )1 << 26; /* 1.0 */
+
+ /* Generate CNG signal, by synthesis filtering */
+ if( psDec->LPC_order == 16 ) {
+ SKP_Silk_LPC_synthesis_order16( CNG_sig, LPC_buf,
+ Gain_Q26, psCNG->CNG_synth_state, CNG_sig, length );
+ } else {
+ SKP_Silk_LPC_synthesis_filter( CNG_sig, LPC_buf,
+ Gain_Q26, psCNG->CNG_synth_state, CNG_sig, length, psDec->LPC_order );
+ }
+ /* Mix with signal */
+ for( i = 0; i < length; i++ ) {
+ tmp_32 = signal[ i ] + CNG_sig[ i ];
+ signal[ i ] = SKP_SAT16( tmp_32 );
+ }
+ } else {
+ SKP_memset( psCNG->CNG_synth_state, 0, psDec->LPC_order * sizeof( SKP_int32 ) );
+ }
+}
--- /dev/null
+++ b/src/SKP_Silk_HP_variable_cutoff_FIX.c
@@ -1,0 +1,118 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_main_FIX.h"
+
+#if HIGH_PASS_INPUT
+
+#define SKP_RADIANS_CONSTANT_Q19 1482 // 0.45f * 2.0f * 3.14159265359 / 1000
+#define SKP_LOG2_VARIABLE_HP_MIN_FREQ_Q7 809 // log(80) in Q7
+
+/* High-pass filter with cutoff frequency adaptation based on pitch lag statistics */
+void SKP_Silk_HP_variable_cutoff_FIX(
+ SKP_Silk_encoder_state_FIX *psEnc, /* I/O Encoder state FIX */
+ SKP_Silk_encoder_control_FIX *psEncCtrl, /* I/O Encoder control FIX */
+ SKP_int16 *out, /* O high-pass filtered output signal */
+ const SKP_int16 *in /* I input signal */
+)
+{
+ SKP_int quality_Q15;
+ SKP_int32 B_Q28[ 3 ], A_Q28[ 2 ];
+ SKP_int32 Fc_Q19, r_Q28, r_Q22;
+ SKP_int32 pitch_freq_Hz_Q16, pitch_freq_log_Q7, delta_freq_Q7;
+
+ /*********************************************/
+ /* Estimate Low End of Pitch Frequency Range */
+ /*********************************************/
+ if( psEnc->sCmn.prev_sigtype == SIG_TYPE_VOICED ) {
+ /* difference, in log domain */
+ pitch_freq_Hz_Q16 = SKP_DIV32_16( SKP_LSHIFT( SKP_MUL( psEnc->sCmn.fs_kHz, 1000 ), 16 ), psEnc->sCmn.prevLag );
+ pitch_freq_log_Q7 = SKP_Silk_lin2log( pitch_freq_Hz_Q16 ) - ( 16 << 7 ); //0x70
+
+ /* adjustment based on quality */
+ quality_Q15 = psEncCtrl->input_quality_bands_Q15[ 0 ];
+ pitch_freq_log_Q7 = SKP_SUB32( pitch_freq_log_Q7, SKP_SMULWB( SKP_SMULWB( SKP_LSHIFT( quality_Q15, 2 ), quality_Q15 ),
+ pitch_freq_log_Q7 - SKP_LOG2_VARIABLE_HP_MIN_FREQ_Q7 ) );
+ pitch_freq_log_Q7 = SKP_ADD32( pitch_freq_log_Q7, SKP_RSHIFT( 19661 - quality_Q15, 9 ) ); // 19661_Q15 = 0.6_Q0
+
+ //delta_freq = pitch_freq_log - psEnc->variable_HP_smth1;
+ delta_freq_Q7 = pitch_freq_log_Q7 - SKP_RSHIFT( psEnc->variable_HP_smth1_Q15, 8 );
+ if( delta_freq_Q7 < 0 ) {
+ /* less smoothing for decreasing pitch frequency, to track something close to the minimum */
+ delta_freq_Q7 = SKP_MUL( delta_freq_Q7, 3 );
+ }
+
+ /* limit delta, to reduce impact of outliers */
+ delta_freq_Q7 = SKP_LIMIT( delta_freq_Q7, -VARIABLE_HP_MAX_DELTA_FREQ_Q7, VARIABLE_HP_MAX_DELTA_FREQ_Q7 );
+
+ /* update smoother */
+ psEnc->variable_HP_smth1_Q15 = SKP_SMLAWB( psEnc->variable_HP_smth1_Q15,
+ SKP_MUL( SKP_LSHIFT( psEnc->speech_activity_Q8, 1 ), delta_freq_Q7 ), VARIABLE_HP_SMTH_COEF1_Q16 );
+ }
+ /* second smoother */
+ psEnc->variable_HP_smth2_Q15 = SKP_SMLAWB( psEnc->variable_HP_smth2_Q15,
+ psEnc->variable_HP_smth1_Q15 - psEnc->variable_HP_smth2_Q15, VARIABLE_HP_SMTH_COEF2_Q16 );
+
+ /* convert from log scale to Hertz */
+ psEncCtrl->pitch_freq_low_Hz = SKP_Silk_log2lin( SKP_RSHIFT( psEnc->variable_HP_smth2_Q15, 8 ) ); //pow( 2.0, psEnc->variable_HP_smth2 );
+
+ /* limit frequency range */
+ psEncCtrl->pitch_freq_low_Hz = SKP_LIMIT( psEncCtrl->pitch_freq_low_Hz, VARIABLE_HP_MIN_FREQ_Q0, VARIABLE_HP_MAX_FREQ_Q0 );
+
+ /********************************/
+ /* Compute Filter Coefficients */
+ /********************************/
+ /* compute cut-off frequency, in radians */
+ //Fc_num = (SKP_float)( 0.45f * 2.0f * 3.14159265359 * psEncCtrl->pitch_freq_low_Hz );
+ //Fc_denom = (SKP_float)( 1e3f * psEnc->sCmn.fs_kHz );
+ SKP_assert( psEncCtrl->pitch_freq_low_Hz <= SKP_int32_MAX / SKP_RADIANS_CONSTANT_Q19 );
+ Fc_Q19 = SKP_DIV32_16( SKP_SMULBB( SKP_RADIANS_CONSTANT_Q19, psEncCtrl->pitch_freq_low_Hz ), psEnc->sCmn.fs_kHz ); // range: 3704 - 27787, 11-15 bits
+ SKP_assert( Fc_Q19 >= 3704 );
+ SKP_assert( Fc_Q19 <= 27787 );
+
+ r_Q28 = ( 1 << 28 ) - SKP_MUL( 471, Fc_Q19 ); // 471_Q9 = 0.92_Q0, range: 255347779 to 266690872, 27-28 bits
+ SKP_assert( r_Q28 >= 255347779 );
+ SKP_assert( r_Q28 <= 266690872 );
+
+ /* b = r * [ 1; -2; 1 ]; */
+ /* a = [ 1; -2 * r * ( 1 - 0.5 * Fc^2 ); r^2 ]; */
+ B_Q28[ 0 ] = r_Q28;
+ B_Q28[ 1 ] = SKP_LSHIFT( -r_Q28, 1 );
+ B_Q28[ 2 ] = r_Q28;
+
+ // -r * ( 2 - Fc * Fc );
+ r_Q22 = SKP_RSHIFT( r_Q28, 6 );
+ A_Q28[ 0 ] = SKP_SMULWW( r_Q22, SKP_SMULWW( Fc_Q19, Fc_Q19 ) - ( 2 << 22 ) );
+ A_Q28[ 1 ] = SKP_SMULWW( r_Q22, r_Q22 );
+
+ /********************************/
+ /* High-Pass Filter */
+ /********************************/
+ SKP_Silk_biquad_alt( in, B_Q28, A_Q28, psEnc->sCmn.In_HP_State, out, psEnc->sCmn.frame_length );
+}
+
+#endif // HIGH_PASS_INPUT
--- /dev/null
+++ b/src/SKP_Silk_Inlines.h
@@ -1,0 +1,280 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+/*! \file SKP_Silk_Inlines.h
+ * \brief SigProcFix_Inlines.h defines inline signal processing functions.
+ */
+
+#ifndef _SKP_SILK_FIX_INLINES_H_
+#define _SKP_SILK_FIX_INLINES_H_
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+/* count leading zeros of SKP_int64 */
+SKP_INLINE SKP_int32 SKP_Silk_CLZ64(SKP_int64 in)
+{
+ SKP_int32 in_upper;
+
+ in_upper = (SKP_int32)SKP_RSHIFT64(in, 32);
+ if (in_upper == 0) {
+ /* Search in the lower 32 bits */
+ return 32 + SKP_Silk_CLZ32( (SKP_int32) in );
+ } else {
+ /* Search in the upper 32 bits */
+ return SKP_Silk_CLZ32( in_upper );
+ }
+}
+
+/* get number of leading zeros and fractional part (the bits right after the leading one */
+SKP_INLINE void SKP_Silk_CLZ_FRAC(SKP_int32 in, /* I: input */
+ SKP_int32 *lz, /* O: number of leading zeros */
+ SKP_int32 *frac_Q7) /* O: the 7 bits right after the leading one */
+{
+ SKP_int32 leadingZeros;
+
+ leadingZeros = SKP_Silk_CLZ32(in);
+ *lz = leadingZeros;
+ if( leadingZeros < 24 ) {
+ *frac_Q7 = SKP_RSHIFT(in, 24 - leadingZeros) & 0x7F;
+ } else {
+ *frac_Q7 = SKP_LSHIFT(in, leadingZeros - 24) & 0x7F;
+ }
+}
+
+/* Approximation of square root */
+/* Accuracy: < +/- 10% for output values > 15 */
+/* < +/- 2.5% for output values > 120 */
+SKP_INLINE SKP_int32 SKP_Silk_SQRT_APPROX(SKP_int32 x)
+{
+ SKP_int32 y, lz, frac_Q7;
+
+ if( x <= 0 ) {
+ return 0;
+ }
+
+ SKP_Silk_CLZ_FRAC(x, &lz, &frac_Q7);
+
+ if( lz & 1 ) {
+ y = 32768;
+ } else {
+ y = 46214; /* 46214 = sqrt(2) * 32768 */
+ }
+
+ /* get scaling right */
+ y >>= SKP_RSHIFT(lz, 1);
+
+ /* increment using fractional part of input */
+ y = SKP_SMLAWB(y, y, SKP_SMULBB(213, frac_Q7));
+
+ return y;
+}
+
+/* returns the number of left shifts before overflow for a 16 bit number (ITU definition with norm(0)=0) */
+SKP_INLINE SKP_int32 SKP_Silk_norm16(SKP_int16 a) {
+
+ SKP_int32 a32;
+
+ /* if ((a == 0) || (a == SKP_int16_MIN)) return(0); */
+ if ((a << 1) == 0) return(0);
+
+ a32 = a;
+ /* if (a32 < 0) a32 = -a32 - 1; */
+ a32 ^= SKP_RSHIFT(a32, 31);
+
+ return SKP_Silk_CLZ32(a32) - 17;
+}
+
+/* returns the number of left shifts before overflow for a 32 bit number (ITU definition with norm(0)=0) */
+SKP_INLINE SKP_int32 SKP_Silk_norm32(SKP_int32 a) {
+
+ /* if ((a == 0) || (a == SKP_int32_MIN)) return(0); */
+ if ((a << 1) == 0) return(0);
+
+ /* if (a < 0) a = -a - 1; */
+ a ^= SKP_RSHIFT(a, 31);
+
+ return SKP_Silk_CLZ32(a) - 1;
+}
+
+/* Divide two int32 values and return result as int32 in a given Q-domain */
+SKP_INLINE SKP_int32 SKP_DIV32_varQ( /* O returns a good approximation of "(a32 << Qres) / b32" */
+ const SKP_int32 a32, /* I numerator (Q0) */
+ const SKP_int32 b32, /* I denominator (Q0) */
+ const SKP_int Qres /* I Q-domain of result (>= 0) */
+)
+{
+ SKP_int a_headrm, b_headrm, lshift;
+ SKP_int32 b32_inv, a32_nrm, b32_nrm, result;
+
+ SKP_assert( b32 != 0 );
+ SKP_assert( Qres >= 0 );
+
+ /* Compute number of bits head room and normalize inputs */
+ a_headrm = SKP_Silk_CLZ32( SKP_abs(a32) ) - 1;
+ a32_nrm = SKP_LSHIFT(a32, a_headrm); /* Q: a_headrm */
+ b_headrm = SKP_Silk_CLZ32( SKP_abs(b32) ) - 1;
+ b32_nrm = SKP_LSHIFT(b32, b_headrm); /* Q: b_headrm */
+
+ /* Inverse of b32, with 14 bits of precision */
+ b32_inv = SKP_DIV32_16( SKP_int32_MAX >> 2, SKP_RSHIFT(b32_nrm, 16) ); /* Q: 29 + 16 - b_headrm */
+
+ /* First approximation */
+ result = SKP_SMULWB(a32_nrm, b32_inv); /* Q: 29 + a_headrm - b_headrm */
+
+ /* Compute residual by subtracting product of denominator and first approximation */
+ a32_nrm -= SKP_LSHIFT_ovflw( SKP_SMMUL(b32_nrm, result), 3 ); /* Q: a_headrm */
+
+ /* Refinement */
+ result = SKP_SMLAWB(result, a32_nrm, b32_inv); /* Q: 29 + a_headrm - b_headrm */
+
+ /* Convert to Qres domain */
+ lshift = 29 + a_headrm - b_headrm - Qres;
+ if( lshift <= 0 ) {
+ return SKP_LSHIFT_SAT32(result, -lshift);
+ } else {
+ if( lshift < 32){
+ return SKP_RSHIFT(result, lshift);
+ } else {
+ /* Avoid undefined result */
+ return 0;
+ }
+ }
+}
+
+/* Invert int32 value and return result as int32 in a given Q-domain */
+SKP_INLINE SKP_int32 SKP_INVERSE32_varQ( /* O returns a good approximation of "(1 << Qres) / b32" */
+ const SKP_int32 b32, /* I denominator (Q0) */
+ const SKP_int Qres /* I Q-domain of result (> 0) */
+)
+{
+ SKP_int b_headrm, lshift;
+ SKP_int32 b32_inv, b32_nrm, err_Q32, result;
+
+ SKP_assert( b32 != 0 );
+ SKP_assert( Qres > 0 );
+
+ /* Compute number of bits head room and normalize input */
+ b_headrm = SKP_Silk_CLZ32( SKP_abs(b32) ) - 1;
+ b32_nrm = SKP_LSHIFT(b32, b_headrm); /* Q: b_headrm */
+
+ /* Inverse of b32, with 14 bits of precision */
+ b32_inv = SKP_DIV32_16( SKP_int32_MAX >> 2, SKP_RSHIFT(b32_nrm, 16) ); /* Q: 29 + 16 - b_headrm */
+
+ /* First approximation */
+ result = SKP_LSHIFT(b32_inv, 16); /* Q: 61 - b_headrm */
+
+ /* Compute residual by subtracting product of denominator and first approximation from one */
+ err_Q32 = SKP_LSHIFT_ovflw( -SKP_SMULWB(b32_nrm, b32_inv), 3 ); /* Q32 */
+
+ /* Refinement */
+ result = SKP_SMLAWW(result, err_Q32, b32_inv); /* Q: 61 - b_headrm */
+
+ /* Convert to Qres domain */
+ lshift = 61 - b_headrm - Qres;
+ if( lshift <= 0 ) {
+ return SKP_LSHIFT_SAT32(result, -lshift);
+ } else {
+ if( lshift < 32){
+ return SKP_RSHIFT(result, lshift);
+ }else{
+ /* Avoid undefined result */
+ return 0;
+ }
+ }
+}
+
+#define SKP_SIN_APPROX_CONST0 (1073735400)
+#define SKP_SIN_APPROX_CONST1 (-82778932)
+#define SKP_SIN_APPROX_CONST2 (1059577)
+#define SKP_SIN_APPROX_CONST3 (-5013)
+
+/* Sine approximation; an input of 65536 corresponds to 2 * pi */
+/* Uses polynomial expansion of the input to the power 0, 2, 4 and 6 */
+/* The relative error is below 1e-5 */
+SKP_INLINE SKP_int32 SKP_Silk_SIN_APPROX_Q24( /* O returns approximately 2^24 * sin(x * 2 * pi / 65536) */
+ SKP_int32 x
+)
+{
+ SKP_int y_Q30;
+
+ /* Keep only bottom 16 bits (the function repeats itself with period 65536) */
+ x &= 65535;
+
+ /* Split range in four quadrants */
+ if( x <= 32768 ) {
+ if( x < 16384 ) {
+ /* Return cos(pi/2 - x) */
+ x = 16384 - x;
+ } else {
+ /* Return cos(x - pi/2) */
+ x -= 16384;
+ }
+ if( x < 1100 ) {
+ /* Special case: high accuracy */
+ return SKP_SMLAWB( 1 << 24, SKP_MUL( x, x ), -5053 );
+ }
+ x = SKP_SMULWB( SKP_LSHIFT( x, 8 ), x ); /* contains x^2 in Q20 */
+ y_Q30 = SKP_SMLAWB( SKP_SIN_APPROX_CONST2, x, SKP_SIN_APPROX_CONST3 );
+ y_Q30 = SKP_SMLAWW( SKP_SIN_APPROX_CONST1, x, y_Q30 );
+ y_Q30 = SKP_SMLAWW( SKP_SIN_APPROX_CONST0 + 66, x, y_Q30 );
+ } else {
+ if( x < 49152 ) {
+ /* Return -cos(3*pi/2 - x) */
+ x = 49152 - x;
+ } else {
+ /* Return -cos(x - 3*pi/2) */
+ x -= 49152;
+ }
+ if( x < 1100 ) {
+ /* Special case: high accuracy */
+ return SKP_SMLAWB( -1 << 24, SKP_MUL( x, x ), 5053 );
+ }
+ x = SKP_SMULWB( SKP_LSHIFT( x, 8 ), x ); /* contains x^2 in Q20 */
+ y_Q30 = SKP_SMLAWB( -SKP_SIN_APPROX_CONST2, x, -SKP_SIN_APPROX_CONST3 );
+ y_Q30 = SKP_SMLAWW( -SKP_SIN_APPROX_CONST1, x, y_Q30 );
+ y_Q30 = SKP_SMLAWW( -SKP_SIN_APPROX_CONST0, x, y_Q30 );
+ }
+ return SKP_RSHIFT_ROUND( y_Q30, 6 );
+}
+
+/* Cosine approximation; an input of 65536 corresponds to 2 * pi */
+/* The relative error is below 1e-5 */
+SKP_INLINE SKP_int32 SKP_Silk_COS_APPROX_Q24( /* O returns approximately 2^24 * cos(x * 2 * pi / 65536) */
+ SKP_int32 x
+)
+{
+ return SKP_Silk_SIN_APPROX_Q24( x + 16384 );
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif //_SKP_SILK_FIX_INLINES_H_
--- /dev/null
+++ b/src/SKP_Silk_LBRR_reset.c
@@ -1,0 +1,40 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_main.h"
+
+/* Resets LBRR buffer, used if packet size changes */
+void SKP_Silk_LBRR_reset(
+ SKP_Silk_encoder_state *psEncC /* I/O state */
+)
+{
+ SKP_int i;
+
+ for( i = 0; i < MAX_LBRR_DELAY; i++ ) {
+ psEncC->LBRR_buffer[ i ].usage = SKP_SILK_NO_LBRR;
+ }
+}
--- /dev/null
+++ b/src/SKP_Silk_LPC_inv_pred_gain.c
@@ -1,0 +1,189 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+/* *
+ * SKP_Silk_LPC_inverse_pred_gain.c *
+ * *
+ * Compute inverse of LPC prediction gain, and *
+ * test if LPC coefficients are stable (all poles within unit circle) *
+ * *
+ * Copyright 2008 (c), Skype Limited *
+ * */
+#include "SKP_Silk_SigProc_FIX.h"
+#define QA 16
+#define A_LIMIT 65520
+
+/* Compute inverse of LPC prediction gain, and */
+/* test if LPC coefficients are stable (all poles within unit circle) */
+SKP_int SKP_Silk_LPC_inverse_pred_gain( /* O: Returns 1 if unstable, otherwise 0 */
+ SKP_int32 *invGain_Q30, /* O: Inverse prediction gain, Q30 energy domain */
+ const SKP_int16 *A_Q12, /* I: Prediction coefficients, Q12 [order] */
+ const SKP_int order /* I: Prediction order */
+)
+{
+ SKP_int k, n, headrm;
+ SKP_int32 rc_Q31, rc_mult1_Q30, rc_mult2_Q16;
+ SKP_int32 Atmp_QA[ 2 ][ SigProc_MAX_ORDER_LPC ], tmp_QA;
+ SKP_int32 *Aold_QA, *Anew_QA;
+
+ Anew_QA = Atmp_QA[ order & 1 ];
+ /* Increase Q domain of the AR coefficients */
+ for( k = 0; k < order; k++ ) {
+ Anew_QA[ k ] = SKP_LSHIFT( (SKP_int32)A_Q12[ k ], QA - 12 );
+ }
+
+ *invGain_Q30 = ( 1 << 30 );
+ for( k = order - 1; k > 0; k-- ) {
+ /* Check for stability */
+ if( ( Anew_QA[ k ] > A_LIMIT ) || ( Anew_QA[ k ] < -A_LIMIT ) ) {
+ return 1;
+ }
+
+ /* Set RC equal to negated AR coef */
+ rc_Q31 = -SKP_LSHIFT( Anew_QA[ k ], 31 - QA );
+
+ /* rc_mult1_Q30 range: [ 1 : 2^30-1 ] */
+ rc_mult1_Q30 = ( SKP_int32_MAX >> 1 ) - SKP_SMMUL( rc_Q31, rc_Q31 );
+ SKP_assert( rc_mult1_Q30 > ( 1 << 15 ) ); /* reduce A_LIMIT if fails */
+ SKP_assert( rc_mult1_Q30 < ( 1 << 30 ) );
+
+ /* rc_mult2_Q16 range: [ 2^16 : SKP_int32_MAX ] */
+ rc_mult2_Q16 = SKP_INVERSE32_varQ( rc_mult1_Q30, 46 ); /* 16 = 46 - 30 */
+
+ /* Update inverse gain */
+ /* invGain_Q30 range: [ 0 : 2^30 ] */
+ *invGain_Q30 = SKP_LSHIFT( SKP_SMMUL( *invGain_Q30, rc_mult1_Q30 ), 2 );
+ SKP_assert( *invGain_Q30 >= 0 );
+ SKP_assert( *invGain_Q30 <= ( 1 << 30 ) );
+
+ /* Swap pointers */
+ Aold_QA = Anew_QA;
+ Anew_QA = Atmp_QA[ k & 1 ];
+
+ /* Update AR coefficient */
+ headrm = SKP_Silk_CLZ32( rc_mult2_Q16 ) - 1;
+ rc_mult2_Q16 = SKP_LSHIFT( rc_mult2_Q16, headrm ); /* Q: 16 + headrm */
+ for( n = 0; n < k; n++ ) {
+ tmp_QA = Aold_QA[ n ] - SKP_LSHIFT( SKP_SMMUL( Aold_QA[ k - n - 1 ], rc_Q31 ), 1 );
+ Anew_QA[ n ] = SKP_LSHIFT( SKP_SMMUL( tmp_QA, rc_mult2_Q16 ), 16 - headrm );
+ }
+ }
+
+ /* Check for stability */
+ if( ( Anew_QA[ 0 ] > A_LIMIT ) || ( Anew_QA[ 0 ] < -A_LIMIT ) ) {
+ return 1;
+ }
+
+ /* Set RC equal to negated AR coef */
+ rc_Q31 = -SKP_LSHIFT( Anew_QA[ 0 ], 31 - QA );
+
+ /* Range: [ 1 : 2^30 ] */
+ rc_mult1_Q30 = ( SKP_int32_MAX >> 1 ) - SKP_SMMUL( rc_Q31, rc_Q31 );
+
+ /* Update inverse gain */
+ /* Range: [ 0 : 2^30 ] */
+ *invGain_Q30 = SKP_LSHIFT( SKP_SMMUL( *invGain_Q30, rc_mult1_Q30 ), 2 );
+ SKP_assert( *invGain_Q30 >= 0 );
+ SKP_assert( *invGain_Q30 <= 1<<30 );
+
+ return 0;
+}
+
+/* For input in Q13 domain */
+SKP_int SKP_Silk_LPC_inverse_pred_gain_Q13( /* O: Returns 1 if unstable, otherwise 0 */
+ SKP_int32 *invGain_Q30, /* O: Inverse prediction gain, Q30 energy domain */
+ const SKP_int16 *A_Q13, /* I: Prediction coefficients, Q13 [order] */
+ const SKP_int order /* I: Prediction order */
+)
+{
+ SKP_int k, n, headrm;
+ SKP_int32 rc_Q31, rc_mult1_Q30, rc_mult2_Q16;
+ SKP_int32 Atmp_QA[ 2 ][ SigProc_MAX_ORDER_LPC ], tmp_QA;
+ SKP_int32 *Aold_QA, *Anew_QA;
+
+ Anew_QA = Atmp_QA[ order & 1 ];
+ /* Increase Q domain of the AR coefficients */
+ for( k = 0; k < order; k++ ) {
+ Anew_QA[ k ] = SKP_LSHIFT( (SKP_int32)A_Q13[ k ], QA - 13 );
+ }
+
+ *invGain_Q30 = ( 1 << 30 );
+ for( k = order - 1; k > 0; k-- ) {
+ /* Check for stability */
+ if( ( Anew_QA[ k ] > A_LIMIT ) || ( Anew_QA[ k ] < -A_LIMIT ) ) {
+ return 1;
+ }
+
+ /* Set RC equal to negated AR coef */
+ rc_Q31 = -SKP_LSHIFT( Anew_QA[ k ], 31 - QA );
+
+ /* rc_mult1_Q30 range: [ 1 : 2^30-1 ] */
+ rc_mult1_Q30 = ( SKP_int32_MAX >> 1 ) - SKP_SMMUL( rc_Q31, rc_Q31 );
+ SKP_assert( rc_mult1_Q30 > ( 1 << 15 ) ); /* reduce A_LIMIT if fails */
+ SKP_assert( rc_mult1_Q30 < ( 1 << 30 ) );
+
+ /* rc_mult2_Q16 range: [ 2^16 : SKP_int32_MAX ] */
+ rc_mult2_Q16 = SKP_INVERSE32_varQ( rc_mult1_Q30, 46 ); /* 16 = 46 - 30 */
+
+ /* Update inverse gain */
+ /* invGain_Q30 range: [ 0 : 2^30 ] */
+ *invGain_Q30 = SKP_LSHIFT( SKP_SMMUL( *invGain_Q30, rc_mult1_Q30 ), 2 );
+ SKP_assert( *invGain_Q30 >= 0 );
+ SKP_assert( *invGain_Q30 <= 1<<30 );
+
+ /* Swap pointers */
+ Aold_QA = Anew_QA;
+ Anew_QA = Atmp_QA[ k & 1 ];
+
+ /* Update AR coefficient */
+ headrm = SKP_Silk_CLZ32( rc_mult2_Q16 ) - 1;
+ rc_mult2_Q16 = SKP_LSHIFT( rc_mult2_Q16, headrm ); /* Q: 16 + headrm */
+ for( n = 0; n < k; n++ ) {
+ tmp_QA = Aold_QA[ n ] - SKP_LSHIFT( SKP_SMMUL( Aold_QA[ k - n - 1 ], rc_Q31 ), 1 );
+ Anew_QA[ n ] = SKP_LSHIFT( SKP_SMMUL( tmp_QA, rc_mult2_Q16 ), 16 - headrm );
+ }
+ }
+
+ /* Check for stability */
+ if( ( Anew_QA[ 0 ] > A_LIMIT ) || ( Anew_QA[ 0 ] < -A_LIMIT ) ) {
+ return 1;
+ }
+
+ /* Set RC equal to negated AR coef */
+ rc_Q31 = -SKP_LSHIFT( Anew_QA[ 0 ], 31 - QA );
+
+ /* Range: [ 1 : 2^30 ] */
+ rc_mult1_Q30 = ( SKP_int32_MAX >> 1 ) - SKP_SMMUL( rc_Q31, rc_Q31 );
+
+ /* Update inverse gain */
+ /* Range: [ 0 : 2^30 ] */
+ *invGain_Q30 = SKP_LSHIFT( SKP_SMMUL( *invGain_Q30, rc_mult1_Q30 ), 2 );
+ SKP_assert( *invGain_Q30 >= 0 );
+ SKP_assert( *invGain_Q30 <= 1<<30 );
+
+ return 0;
+}
--- /dev/null
+++ b/src/SKP_Silk_LPC_stabilize.c
@@ -1,0 +1,132 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_typedef.h"
+#include "SKP_Silk_SigProc_FIX.h"
+
+#define LPC_STABILIZE_LPC_MAX_ABS_VALUE_Q16 ( ( (SKP_int32)SKP_int16_MAX ) << 4 )
+
+/* LPC stabilizer, for a single input data vector */
+void SKP_Silk_LPC_stabilize(
+ SKP_int16 *a_Q12, /* O stabilized LPC vector [L] */
+ SKP_int32 *a_Q16, /* I LPC vector [L] */
+ const SKP_int32 bwe_Q16, /* I Bandwidth expansion factor */
+ const SKP_int L /* I Number of LPC parameters in the input vector */
+)
+{
+ SKP_int32 maxabs, absval, sc_Q16;
+ SKP_int i, idx = 0;
+ SKP_int32 invGain_Q30;
+
+ SKP_Silk_bwexpander_32( a_Q16, L, bwe_Q16 );
+
+ /***************************/
+ /* Limit range of the LPCs */
+ /***************************/
+ /* Limit the maximum absolute value of the prediction coefficients */
+ while( SKP_TRUE ) {
+ /* Find maximum absolute value and its index */
+ maxabs = SKP_int32_MIN;
+ for( i = 0; i < L; i++ ) {
+ absval = SKP_abs( a_Q16[ i ] );
+ if( absval > maxabs ) {
+ maxabs = absval;
+ idx = i;
+ }
+ }
+
+ if( maxabs >= LPC_STABILIZE_LPC_MAX_ABS_VALUE_Q16 ) {
+ /* Reduce magnitude of prediction coefficients */
+ sc_Q16 = SKP_DIV32( SKP_int32_MAX, SKP_RSHIFT( maxabs, 4 ) );
+ sc_Q16 = 65536 - sc_Q16;
+ sc_Q16 = SKP_DIV32( sc_Q16, idx + 1 );
+ sc_Q16 = 65536 - sc_Q16;
+ sc_Q16 = SKP_LSHIFT( SKP_SMULWB( sc_Q16, 32604 ), 1 ); // 0.995 in Q16
+ SKP_Silk_bwexpander_32( a_Q16, L, sc_Q16 );
+ } else {
+ break;
+ }
+ }
+
+ /* Convert to 16 bit Q12 */
+ for( i = 0; i < L; i++ ) {
+ a_Q12[ i ] = (SKP_int16)SKP_RSHIFT_ROUND( a_Q16[ i ], 4 );
+ }
+
+ /**********************/
+ /* Ensure stable LPCs */
+ /**********************/
+ while( SKP_Silk_LPC_inverse_pred_gain( &invGain_Q30, a_Q12, L ) == 1 ) {
+ SKP_Silk_bwexpander( a_Q12, L, 65339 ); // 0.997 in Q16
+ }
+}
+
+void SKP_Silk_LPC_fit(
+ SKP_int16 *a_QQ, /* O Stabilized LPC vector, Q(24-rshift) [L] */
+ SKP_int32 *a_Q24, /* I LPC vector [L] */
+ const SKP_int QQ, /* I Q domain of output LPC vector */
+ const SKP_int L /* I Number of LPC parameters in the input vector */
+)
+{
+ SKP_int i, rshift, idx = 0;
+ SKP_int32 maxabs, absval, sc_Q16;
+
+ rshift = 24 - QQ;
+
+ /***************************/
+ /* Limit range of the LPCs */
+ /***************************/
+ /* Limit the maximum absolute value of the prediction coefficients */
+ while( SKP_TRUE ) {
+ /* Find maximum absolute value and its index */
+ maxabs = SKP_int32_MIN;
+ for( i = 0; i < L; i++ ) {
+ absval = SKP_abs( a_Q24[ i ] );
+ if( absval > maxabs ) {
+ maxabs = absval;
+ idx = i;
+ }
+ }
+
+ maxabs = SKP_RSHIFT( maxabs, rshift );
+ if( maxabs >= SKP_int16_MAX ) {
+ /* Reduce magnitude of prediction coefficients */
+ sc_Q16 = 65470 - SKP_DIV32( SKP_MUL( 65470 >> 2, maxabs - SKP_int16_MAX ),
+ SKP_RSHIFT32( SKP_MUL( maxabs, idx + 1), 2 ) );
+ SKP_Silk_bwexpander_32( a_Q24, L, sc_Q16 );
+ } else {
+ break;
+ }
+ }
+
+ /* Convert to 16 bit Q(24-rshift) */
+ SKP_assert( rshift > 0 );
+ SKP_assert( rshift < 31 );
+ for( i = 0; i < L; i++ ) {
+ a_QQ[ i ] = (SKP_int16)SKP_RSHIFT_ROUND( a_Q24[ i ], rshift );
+ }
+}
--- /dev/null
+++ b/src/SKP_Silk_LPC_synthesis_filter.c
@@ -1,0 +1,98 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+/* *
+ * SKP_Silk_LPC_synthesis_filter.c *
+ * Coefficients are in Q12 *
+ * *
+ * even order AR filter *
+ * */
+#include "SKP_Silk_SigProc_FIX.h"
+
+/* even order AR filter */
+void SKP_Silk_LPC_synthesis_filter(
+ const SKP_int16 *in, /* I: excitation signal */
+ const SKP_int16 *A_Q12, /* I: AR coefficients [Order], between -8_Q0 and 8_Q0 */
+ const SKP_int32 Gain_Q26, /* I: gain */
+ SKP_int32 *S, /* I/O: state vector [Order] */
+ SKP_int16 *out, /* O: output signal */
+ const SKP_int32 len, /* I: signal length */
+ const SKP_int Order /* I: filter order, must be even */
+)
+{
+ SKP_int k, j, idx, Order_half = SKP_RSHIFT( Order, 1 );
+ SKP_int32 SA, SB, Atmp, A_align_Q12[SigProc_MAX_ORDER_LPC >> 1], out32_Q10, out32;
+
+ /* Order must be even */
+ SKP_assert( 2*Order_half == Order );
+
+ /* combine two A_Q12 values and ensure 32-bit alignment */
+ for( k = 0; k < Order_half; k++ ) {
+ idx = SKP_SMULBB( 2, k );
+ A_align_Q12[k] = (((SKP_int32)A_Q12[idx]) & 0x0000ffff) | SKP_LSHIFT( (SKP_int32)A_Q12[idx+1], 16 );
+ }
+
+ /* S[] values are in Q14 */
+ for( k = 0; k < len; k++ ) {
+ SA = S[Order-1];
+ out32_Q10 = 0;
+ for( j=0;j<(Order_half-1); j++ ) {
+ idx = SKP_SMULBB( 2, j ) + 1;
+ /* multiply-add two prediction coefficients for each loop */
+ /* NOTE: the code below loads two int16 values in an int32, and multiplies each using the */
+ /* SMLAWB and SMLAWT instructions. On a big-endian CPU the two int16 variables would be */
+ /* loaded in reverse order and the code will give the wrong result. In that case swapping */
+ /* the SMLAWB and SMLAWT instructions should solve the problem. */
+ Atmp = A_align_Q12[j];
+ SB = S[Order - 1 - idx];
+ S[Order - 1 - idx] = SA;
+ out32_Q10 = SKP_SMLAWB( out32_Q10, SA, Atmp );
+ out32_Q10 = SKP_SMLAWT( out32_Q10, SB, Atmp );
+ SA = S[Order - 2 - idx];
+ S[Order - 2 - idx] = SB;
+ }
+
+ /* unrolled loop: epilog */
+ Atmp = A_align_Q12[Order_half-1];
+ SB = S[0];
+ S[0] = SA;
+ out32_Q10 = SKP_SMLAWB( out32_Q10, SA, Atmp );
+ out32_Q10 = SKP_SMLAWT( out32_Q10, SB, Atmp );
+
+ /* apply gain to excitation signal and add to prediction */
+ out32_Q10 = SKP_ADD_SAT32( out32_Q10, SKP_SMULWB( Gain_Q26, in[k] ) );
+
+ /* scale to Q0 */
+ out32 = SKP_RSHIFT_ROUND( out32_Q10, 10 );
+
+ /* saturate output */
+ out[k] = (SKP_int16)SKP_SAT16( out32 );
+
+ /* move result into delay line */
+ S[Order - 1] = SKP_LSHIFT_SAT32( out32_Q10, 4 );
+ }
+}
--- /dev/null
+++ b/src/SKP_Silk_LPC_synthesis_order16.c
@@ -1,0 +1,141 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+/* *
+ * SKP_Silk_LPC_synthesis_order16.c *
+ * Coefficients are in Q12 *
+ * *
+ * 16th order AR filter *
+ * */
+#include "SKP_Silk_SigProc_FIX.h"
+
+/* 16th order AR filter */
+void SKP_Silk_LPC_synthesis_order16(const SKP_int16 *in, /* I: excitation signal */
+ const SKP_int16 *A_Q12, /* I: AR coefficients [16], between -8_Q0 and 8_Q0 */
+ const SKP_int32 Gain_Q26, /* I: gain */
+ SKP_int32 *S, /* I/O: state vector [16] */
+ SKP_int16 *out, /* O: output signal */
+ const SKP_int32 len /* I: signal length, must be multiple of 16 */
+)
+{
+ SKP_int k;
+ SKP_int32 SA, SB, Atmp, A_align_Q12[8], out32_Q10, out32;
+
+ /* combine two A_Q12 values and ensure 32-bit alignment */
+ for( k = 0; k < 8; k++ ) {
+ A_align_Q12[k] = (((SKP_int32)A_Q12[ 2*k ]) & 0x0000ffff) | SKP_LSHIFT( (SKP_int32)A_Q12[ 2*k + 1 ], 16 );
+ }
+
+ /* S[] values are in Q14 */
+ /* NOTE: the code below loads two int16 values in an int32, and multiplies each using the */
+ /* SMLAWB and SMLAWT instructions. On a big-endian CPU the two int16 variables would be */
+ /* loaded in reverse order and the code will give the wrong result. In that case swapping */
+ /* the SMLAWB and SMLAWT instructions should solve the problem. */
+ for( k = 0; k < len; k++ ) {
+ /* unrolled loop: prolog */
+ /* multiply-add two prediction coefficients per iteration */
+ SA = S[15];
+ Atmp = A_align_Q12[0];
+ SB = S[14];
+ S[14] = SA;
+ out32_Q10 = SKP_SMULWB( SA, Atmp );
+ out32_Q10 = SKP_SMLAWT_ovflw( out32_Q10, SB, Atmp );
+ SA = S[13];
+ S[13] = SB;
+
+ /* unrolled loop: main loop */
+ Atmp = A_align_Q12[1];
+ SB = S[12];
+ S[12] = SA;
+ out32_Q10 = SKP_SMLAWB_ovflw( out32_Q10, SA, Atmp );
+ out32_Q10 = SKP_SMLAWT_ovflw( out32_Q10, SB, Atmp );
+ SA = S[11];
+ S[11] = SB;
+
+ Atmp = A_align_Q12[2];
+ SB = S[10];
+ S[10] = SA;
+ out32_Q10 = SKP_SMLAWB_ovflw( out32_Q10, SA, Atmp );
+ out32_Q10 = SKP_SMLAWT_ovflw( out32_Q10, SB, Atmp );
+ SA = S[9];
+ S[9] = SB;
+
+ Atmp = A_align_Q12[3];
+ SB = S[8];
+ S[8] = SA;
+ out32_Q10 = SKP_SMLAWB_ovflw( out32_Q10, SA, Atmp );
+ out32_Q10 = SKP_SMLAWT_ovflw( out32_Q10, SB, Atmp );
+ SA = S[7];
+ S[7] = SB;
+
+ Atmp = A_align_Q12[4];
+ SB = S[6];
+ S[6] = SA;
+ out32_Q10 = SKP_SMLAWB_ovflw( out32_Q10, SA, Atmp );
+ out32_Q10 = SKP_SMLAWT_ovflw( out32_Q10, SB, Atmp );
+ SA = S[5];
+ S[5] = SB;
+
+ Atmp = A_align_Q12[5];
+ SB = S[4];
+ S[4] = SA;
+ out32_Q10 = SKP_SMLAWB_ovflw( out32_Q10, SA, Atmp );
+ out32_Q10 = SKP_SMLAWT_ovflw( out32_Q10, SB, Atmp );
+ SA = S[3];
+ S[3] = SB;
+
+ Atmp = A_align_Q12[6];
+ SB = S[2];
+ S[2] = SA;
+ out32_Q10 = SKP_SMLAWB_ovflw( out32_Q10, SA, Atmp );
+ out32_Q10 = SKP_SMLAWT_ovflw( out32_Q10, SB, Atmp );
+ SA = S[1];
+ S[1] = SB;
+
+ /* unrolled loop: epilog */
+ Atmp = A_align_Q12[7];
+ SB = S[0];
+ S[0] = SA;
+ out32_Q10 = SKP_SMLAWB_ovflw( out32_Q10, SA, Atmp );
+ out32_Q10 = SKP_SMLAWT_ovflw( out32_Q10, SB, Atmp );
+
+ /* unrolled loop: end */
+ /* apply gain to excitation signal and add to prediction */
+ out32_Q10 = SKP_ADD_SAT32( out32_Q10, SKP_SMULWB( Gain_Q26, in[k] ) );
+
+ /* scale to Q0 */
+ out32 = SKP_RSHIFT_ROUND( out32_Q10, 10 );
+
+ /* saturate output */
+ out[k] = (SKP_int16)SKP_SAT16( out32 );
+
+ /* move result into delay line */
+ S[15] = SKP_LSHIFT_SAT32( out32_Q10, 4 );
+ }
+}
+
+
--- /dev/null
+++ b/src/SKP_Silk_LP_variable_cutoff.c
@@ -1,0 +1,191 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+/*
+
+ Elliptic/Cauer filters designed with 0.1 dB passband ripple,
+ 80 dB minimum stopband attenuation, and
+ [0.95 : 0.15 : 0.35] normalized cut off frequencies.
+
+*/
+#include "SKP_Silk_main.h"
+
+#if SWITCH_TRANSITION_FILTERING
+
+/* Helper function, that interpolates the filter taps */
+SKP_INLINE void SKP_Silk_LP_interpolate_filter_taps(
+ SKP_int32 B_Q28[ TRANSITION_NB ],
+ SKP_int32 A_Q28[ TRANSITION_NA ],
+ const SKP_int ind,
+ const SKP_int32 fac_Q16
+)
+{
+ SKP_int nb, na;
+
+ if( ind < TRANSITION_INT_NUM - 1 ) {
+ if( fac_Q16 > 0 ) {
+ if( fac_Q16 == SKP_SAT16( fac_Q16 ) ) { /* fac_Q16 is in range of a 16-bit int */
+ /* Piece-wise linear interpolation of B and A */
+ for( nb = 0; nb < TRANSITION_NB; nb++ ) {
+ B_Q28[ nb ] = SKP_SMLAWB(
+ SKP_Silk_Transition_LP_B_Q28[ ind ][ nb ],
+ SKP_Silk_Transition_LP_B_Q28[ ind + 1 ][ nb ] -
+ SKP_Silk_Transition_LP_B_Q28[ ind ][ nb ],
+ fac_Q16 );
+ }
+ for( na = 0; na < TRANSITION_NA; na++ ) {
+ A_Q28[ na ] = SKP_SMLAWB(
+ SKP_Silk_Transition_LP_A_Q28[ ind ][ na ],
+ SKP_Silk_Transition_LP_A_Q28[ ind + 1 ][ na ] -
+ SKP_Silk_Transition_LP_A_Q28[ ind ][ na ],
+ fac_Q16 );
+ }
+ } else if( fac_Q16 == ( 1 << 15 ) ) { /* Neither fac_Q16 nor ( ( 1 << 16 ) - fac_Q16 ) is in range of a 16-bit int */
+
+ /* Piece-wise linear interpolation of B and A */
+ for( nb = 0; nb < TRANSITION_NB; nb++ ) {
+ B_Q28[ nb ] = SKP_RSHIFT(
+ SKP_Silk_Transition_LP_B_Q28[ ind ][ nb ] +
+ SKP_Silk_Transition_LP_B_Q28[ ind + 1 ][ nb ],
+ 1 );
+ }
+ for( na = 0; na < TRANSITION_NA; na++ ) {
+ A_Q28[ na ] = SKP_RSHIFT(
+ SKP_Silk_Transition_LP_A_Q28[ ind ][ na ] +
+ SKP_Silk_Transition_LP_A_Q28[ ind + 1 ][ na ],
+ 1 );
+ }
+ } else { /* ( ( 1 << 16 ) - fac_Q16 ) is in range of a 16-bit int */
+
+ SKP_assert( ( ( 1 << 16 ) - fac_Q16 ) == SKP_SAT16( ( ( 1 << 16 ) - fac_Q16) ) );
+ /* Piece-wise linear interpolation of B and A */
+ for( nb = 0; nb < TRANSITION_NB; nb++ ) {
+ B_Q28[ nb ] = SKP_SMLAWB(
+ SKP_Silk_Transition_LP_B_Q28[ ind + 1 ][ nb ],
+ SKP_Silk_Transition_LP_B_Q28[ ind ][ nb ] -
+ SKP_Silk_Transition_LP_B_Q28[ ind + 1 ][ nb ],
+ ( 1 << 16 ) - fac_Q16 );
+ }
+ for( na = 0; na < TRANSITION_NA; na++ ) {
+ A_Q28[ na ] = SKP_SMLAWB(
+ SKP_Silk_Transition_LP_A_Q28[ ind + 1 ][ na ],
+ SKP_Silk_Transition_LP_A_Q28[ ind ][ na ] -
+ SKP_Silk_Transition_LP_A_Q28[ ind + 1 ][ na ],
+ ( 1 << 16 ) - fac_Q16 );
+ }
+ }
+ } else {
+ SKP_memcpy( B_Q28, SKP_Silk_Transition_LP_B_Q28[ ind ], TRANSITION_NB * sizeof( SKP_int32 ) );
+ SKP_memcpy( A_Q28, SKP_Silk_Transition_LP_A_Q28[ ind ], TRANSITION_NA * sizeof( SKP_int32 ) );
+ }
+ } else {
+ SKP_memcpy( B_Q28, SKP_Silk_Transition_LP_B_Q28[ TRANSITION_INT_NUM - 1 ], TRANSITION_NB * sizeof( SKP_int32 ) );
+ SKP_memcpy( A_Q28, SKP_Silk_Transition_LP_A_Q28[ TRANSITION_INT_NUM - 1 ], TRANSITION_NA * sizeof( SKP_int32 ) );
+ }
+}
+
+/* Low-pass filter with variable cutoff frequency based on */
+/* piece-wise linear interpolation between elliptic filters */
+/* Start by setting psEncC->transition_frame_no = 1; */
+/* Deactivate by setting psEncC->transition_frame_no = 0; */
+void SKP_Silk_LP_variable_cutoff(
+ SKP_Silk_LP_state *psLP, /* I/O LP filter state */
+ SKP_int16 *out, /* O Low-pass filtered output signal */
+ const SKP_int16 *in, /* I Input signal */
+ const SKP_int frame_length /* I Frame length */
+)
+{
+ SKP_int32 B_Q28[ TRANSITION_NB ], A_Q28[ TRANSITION_NA ];
+ SKP_int fac_Q16 = 0, ind = 0;
+
+ SKP_assert( psLP->transition_frame_no >= 0 );
+ SKP_assert( ( ( ( psLP->transition_frame_no <= TRANSITION_FRAMES_DOWN ) && ( psLP->mode == 0 ) ) ||
+ ( ( psLP->transition_frame_no <= TRANSITION_FRAMES_UP ) && ( psLP->mode == 1 ) ) ) );
+
+ /* Interpolate filter coefficients if needed */
+ if( psLP->transition_frame_no > 0 ) {
+ if( psLP->mode == 0 ) {
+ if( psLP->transition_frame_no < TRANSITION_FRAMES_DOWN ) {
+ /* Calculate index and interpolation factor for interpolation */
+#if( TRANSITION_INT_STEPS_DOWN == 32 )
+ fac_Q16 = SKP_LSHIFT( psLP->transition_frame_no, 16 - 5 );
+#else
+ fac_Q16 = SKP_DIV32_16( SKP_LSHIFT( psLP->transition_frame_no, 16 ), TRANSITION_INT_STEPS_DOWN );
+#endif
+ ind = SKP_RSHIFT( fac_Q16, 16 );
+ fac_Q16 -= SKP_LSHIFT( ind, 16 );
+
+ SKP_assert( ind >= 0 );
+ SKP_assert( ind < TRANSITION_INT_NUM );
+
+ /* Interpolate filter coefficients */
+ SKP_Silk_LP_interpolate_filter_taps( B_Q28, A_Q28, ind, fac_Q16 );
+
+ /* Increment transition frame number for next frame */
+ psLP->transition_frame_no++;
+
+ } else if( psLP->transition_frame_no == TRANSITION_FRAMES_DOWN ) {
+ /* End of transition phase */
+ SKP_Silk_LP_interpolate_filter_taps( B_Q28, A_Q28, TRANSITION_INT_NUM - 1, 0 );
+ }
+ } else if( psLP->mode == 1 ) {
+ if( psLP->transition_frame_no < TRANSITION_FRAMES_UP ) {
+ /* Calculate index and interpolation factor for interpolation */
+#if( TRANSITION_INT_STEPS_UP == 64 )
+ fac_Q16 = SKP_LSHIFT( TRANSITION_FRAMES_UP - psLP->transition_frame_no, 16 - 6 );
+#else
+ fac_Q16 = SKP_DIV32_16( SKP_LSHIFT( TRANSITION_FRAMES_UP - psLP->transition_frame_no, 16 ), TRANSITION_INT_STEPS_UP );
+#endif
+ ind = SKP_RSHIFT( fac_Q16, 16 );
+ fac_Q16 -= SKP_LSHIFT( ind, 16 );
+
+ SKP_assert( ind >= 0 );
+ SKP_assert( ind < TRANSITION_INT_NUM );
+
+ /* Interpolate filter coefficients */
+ SKP_Silk_LP_interpolate_filter_taps( B_Q28, A_Q28, ind, fac_Q16 );
+
+ /* Increment transition frame number for next frame */
+ psLP->transition_frame_no++;
+
+ } else if( psLP->transition_frame_no == TRANSITION_FRAMES_UP ) {
+ /* End of transition phase */
+ SKP_Silk_LP_interpolate_filter_taps( B_Q28, A_Q28, 0, 0 );
+ }
+ }
+ }
+
+ if( psLP->transition_frame_no > 0 ) {
+ /* ARMA low-pass filtering */
+ SKP_assert( TRANSITION_NB == 3 && TRANSITION_NA == 2 );
+ SKP_Silk_biquad_alt( in, B_Q28, A_Q28, psLP->In_LP_State, out, frame_length );
+ } else {
+ /* Instead of using the filter, copy input directly to output */
+ SKP_memcpy( out, in, frame_length * sizeof( SKP_int16 ) );
+ }
+}
+#endif
--- /dev/null
+++ b/src/SKP_Silk_LSF_cos_table.c
@@ -1,0 +1,65 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_SigProc_FIX.h"
+
+// Q12 values (even)
+const SKP_int SKP_Silk_LSFCosTab_FIX_Q12[LSF_COS_TAB_SZ_FIX + 1] = {
+ 8192, 8190, 8182, 8170,
+ 8152, 8130, 8104, 8072,
+ 8034, 7994, 7946, 7896,
+ 7840, 7778, 7714, 7644,
+ 7568, 7490, 7406, 7318,
+ 7226, 7128, 7026, 6922,
+ 6812, 6698, 6580, 6458,
+ 6332, 6204, 6070, 5934,
+ 5792, 5648, 5502, 5352,
+ 5198, 5040, 4880, 4718,
+ 4552, 4382, 4212, 4038,
+ 3862, 3684, 3502, 3320,
+ 3136, 2948, 2760, 2570,
+ 2378, 2186, 1990, 1794,
+ 1598, 1400, 1202, 1002,
+ 802, 602, 402, 202,
+ 0, -202, -402, -602,
+ -802, -1002, -1202, -1400,
+ -1598, -1794, -1990, -2186,
+ -2378, -2570, -2760, -2948,
+ -3136, -3320, -3502, -3684,
+ -3862, -4038, -4212, -4382,
+ -4552, -4718, -4880, -5040,
+ -5198, -5352, -5502, -5648,
+ -5792, -5934, -6070, -6204,
+ -6332, -6458, -6580, -6698,
+ -6812, -6922, -7026, -7128,
+ -7226, -7318, -7406, -7490,
+ -7568, -7644, -7714, -7778,
+ -7840, -7896, -7946, -7994,
+ -8034, -8072, -8104, -8130,
+ -8152, -8170, -8182, -8190,
+ -8192
+};
--- /dev/null
+++ b/src/SKP_Silk_LTP_analysis_filter_FIX.c
@@ -1,0 +1,85 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_main_FIX.h"
+
+void SKP_Silk_LTP_analysis_filter_FIX(
+ SKP_int16 *LTP_res, /* O: LTP residual signal of length NB_SUBFR * ( pre_length + subfr_length ) */
+ const SKP_int16 *x, /* I: Pointer to input signal with at least max( pitchL ) preceeding samples */
+ const SKP_int16 LTPCoef_Q14[ LTP_ORDER * NB_SUBFR ],/* I: LTP_ORDER LTP coefficients for each NB_SUBFR subframe */
+ const SKP_int pitchL[ NB_SUBFR ], /* I: Pitch lag, one for each subframe */
+ const SKP_int32 invGains_Qxx[ NB_SUBFR ], /* I: Inverse quantization gains, one for each subframe */
+ const SKP_int Qxx, /* I: Inverse quantization gains Q domain */
+ const SKP_int subfr_length, /* I: Length of each subframe */
+ const SKP_int pre_length /* I: Length of the preceeding samples starting at &x[0] for each subframe */
+)
+{
+ const SKP_int16 *x_ptr, *x_lag_ptr;
+ SKP_int16 Btmp_Q14[ LTP_ORDER ];
+ SKP_int16 *LTP_res_ptr;
+ SKP_int k, i, j;
+ SKP_int32 LTP_est;
+
+ x_ptr = x;
+ LTP_res_ptr = LTP_res;
+ for( k = 0; k < NB_SUBFR; k++ ) {
+
+ x_lag_ptr = x_ptr - pitchL[ k ];
+ for( i = 0; i < LTP_ORDER; i++ ) {
+ Btmp_Q14[ i ] = LTPCoef_Q14[ k * LTP_ORDER + i ];
+ }
+
+ /* LTP analysis FIR filter */
+ for( i = 0; i < subfr_length + pre_length; i++ ) {
+ LTP_res_ptr[ i ] = x_ptr[ i ];
+
+ /* Long-term prediction */
+ LTP_est = SKP_SMULBB( x_lag_ptr[ LTP_ORDER / 2 ], Btmp_Q14[ 0 ] );
+ for( j = 1; j < LTP_ORDER; j++ ) {
+ LTP_est = SKP_SMLABB_ovflw( LTP_est, x_lag_ptr[ LTP_ORDER / 2 - j ], Btmp_Q14[ j ] );
+ }
+ LTP_est = SKP_RSHIFT_ROUND( LTP_est, 14 ); // round and -> Q0
+
+ /* Subtract long-term prediction */
+ LTP_res_ptr[ i ] = ( SKP_int16 )SKP_SAT16( ( SKP_int32 )x_ptr[ i ] - LTP_est );
+
+ /* Scale residual */
+ if( Qxx == 16 ) {
+ LTP_res_ptr[ i ] = SKP_SMULWB( invGains_Qxx[ k ], LTP_res_ptr[ i ] );
+ } else {
+ LTP_res_ptr[ i ] = ( SKP_int16 )SKP_CHECK_FIT16( SKP_RSHIFT64( SKP_SMULL( invGains_Qxx[ k ], LTP_res_ptr[ i ] ), Qxx ) );
+ }
+
+ x_lag_ptr++;
+ }
+
+ /* Update pointers */
+ LTP_res_ptr += subfr_length + pre_length;
+ x_ptr += subfr_length;
+ }
+}
+
--- /dev/null
+++ b/src/SKP_Silk_LTP_scale_ctrl_FIX.c
@@ -1,0 +1,81 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_main_FIX.h"
+
+#define NB_THRESHOLDS 11
+
+/* Table containing trained thresholds for LTP scaling */
+static const SKP_int16 LTPScaleThresholds_Q15[ NB_THRESHOLDS ] =
+{
+ 31129, 26214, 16384, 13107, 9830, 6554,
+ 4915, 3276, 2621, 2458, 0
+};
+
+void SKP_Silk_LTP_scale_ctrl_FIX(
+ SKP_Silk_encoder_state_FIX *psEnc, /* I/O encoder state FIX */
+ SKP_Silk_encoder_control_FIX *psEncCtrl /* I/O encoder control FIX */
+)
+{
+ SKP_int round_loss, frames_per_packet;
+ SKP_int g_out_Q5, g_limit_Q15, thrld1_Q15, thrld2_Q15;
+
+ /* 1st order high-pass filter */
+ psEnc->HPLTPredCodGain_Q7 = SKP_max_int( psEncCtrl->LTPredCodGain_Q7 - psEnc->prevLTPredCodGain_Q7, 0 )
+ + SKP_RSHIFT_ROUND( psEnc->HPLTPredCodGain_Q7, 1 );
+
+ psEnc->prevLTPredCodGain_Q7 = psEncCtrl->LTPredCodGain_Q7;
+
+ /* combine input and filtered input */
+ g_out_Q5 = SKP_RSHIFT_ROUND( SKP_RSHIFT( psEncCtrl->LTPredCodGain_Q7, 1 ) + SKP_RSHIFT( psEnc->HPLTPredCodGain_Q7, 1 ), 3 );
+ g_limit_Q15 = SKP_Silk_sigm_Q15( g_out_Q5 - ( 3 << 5 ) ); /* mulitplid with 0.5 */
+
+ /* Default is minimum scaling */
+ psEncCtrl->sCmn.LTP_scaleIndex = 0;
+
+ /* Round the loss measure to whole pct */
+ round_loss = ( SKP_int )psEnc->sCmn.PacketLoss_perc;
+
+ /* Only scale if first frame in packet 0% */
+ if( psEnc->sCmn.nFramesInPayloadBuf == 0 ) {
+
+ frames_per_packet = SKP_DIV32_16( psEnc->sCmn.PacketSize_ms, FRAME_LENGTH_MS );
+
+ round_loss += frames_per_packet - 1;
+ thrld1_Q15 = LTPScaleThresholds_Q15[ SKP_min_int( round_loss, NB_THRESHOLDS - 1 ) ];
+ thrld2_Q15 = LTPScaleThresholds_Q15[ SKP_min_int( round_loss + 1, NB_THRESHOLDS - 1 ) ];
+
+ if( g_limit_Q15 > thrld1_Q15 ) {
+ /* Maximum scaling */
+ psEncCtrl->sCmn.LTP_scaleIndex = 2;
+ } else if( g_limit_Q15 > thrld2_Q15 ) {
+ /* Medium scaling */
+ psEncCtrl->sCmn.LTP_scaleIndex = 1;
+ }
+ }
+ psEncCtrl->LTP_scale_Q14 = SKP_Silk_LTPScales_table_Q14[ psEncCtrl->sCmn.LTP_scaleIndex ];
+}
--- /dev/null
+++ b/src/SKP_Silk_MA.c
@@ -1,0 +1,232 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+/* *
+ * SKP_Silk_MA.c *
+ * *
+ * Variable order MA filter *
+ * *
+ * Copyright 2006 (c), Skype Limited *
+ * Date: 060221 *
+ * */
+#include "SKP_Silk_SigProc_FIX.h"
+
+/* Variable order MA filter */
+void SKP_Silk_MA(
+ const SKP_int16 *in, /* I: input signal */
+ const SKP_int16 *B, /* I: MA coefficients, Q13 [order+1] */
+ SKP_int32 *S, /* I/O: state vector [order] */
+ SKP_int16 *out, /* O: output signal */
+ const SKP_int32 len, /* I: signal length */
+ const SKP_int32 order /* I: filter order */
+)
+{
+ SKP_int k, d, in16;
+ SKP_int32 out32;
+
+ for( k = 0; k < len; k++ ) {
+ in16 = in[ k ];
+ out32 = SKP_SMLABB( S[ 0 ], in16, B[ 0 ] );
+ out32 = SKP_RSHIFT_ROUND( out32, 13 );
+
+ for( d = 1; d < order; d++ ) {
+ S[ d - 1 ] = SKP_SMLABB( S[ d ], in16, B[ d ] );
+ }
+ S[ order - 1 ] = SKP_SMULBB( in16, B[ order ] );
+
+ /* Limit */
+ out[ k ] = (SKP_int16)SKP_SAT16( out32 );
+ }
+}
+/* Variable order MA prediction error filter */
+void SKP_Silk_MA_Prediction(
+ const SKP_int16 *in, /* I: Input signal */
+ const SKP_int16 *B, /* I: MA prediction coefficients, Q12 [order] */
+ SKP_int32 *S, /* I/O: State vector [order] */
+ SKP_int16 *out, /* O: Output signal */
+ const SKP_int32 len, /* I: Signal length */
+ const SKP_int32 order /* I: Filter order */
+)
+{
+ SKP_int k, d, in16;
+ SKP_int32 out32;
+ SKP_int32 B32;
+
+ if( ( order & 1 ) == 0 && (SKP_int32)( (SKP_int_ptr_size)B & 3 ) == 0 ) {
+ /* Even order and 4-byte aligned coefficient array */
+
+ /* NOTE: the code below loads two int16 values in an int32, and multiplies each using the */
+ /* SMLABB and SMLABT instructions. On a big-endian CPU the two int16 variables would be */
+ /* loaded in reverse order and the code will give the wrong result. In that case swapping */
+ /* the SMLABB and SMLABT instructions should solve the problem. */
+ for( k = 0; k < len; k++ ) {
+ in16 = in[ k ];
+ out32 = SKP_LSHIFT( in16, 12 ) - S[ 0 ];
+ out32 = SKP_RSHIFT_ROUND( out32, 12 );
+
+ for( d = 0; d < order - 2; d += 2 ) {
+ B32 = *( (SKP_int32*)&B[ d ] ); /* read two coefficients at once */
+ S[ d ] = SKP_SMLABB_ovflw( S[ d + 1 ], in16, B32 );
+ S[ d + 1 ] = SKP_SMLABT_ovflw( S[ d + 2 ], in16, B32 );
+ }
+ B32 = *( (SKP_int32*)&B[ d ] ); /* read two coefficients at once */
+ S[ order - 2 ] = SKP_SMLABB_ovflw( S[ order - 1 ], in16, B32 );
+ S[ order - 1 ] = SKP_SMULBT( in16, B32 );
+
+ /* Limit */
+ out[ k ] = (SKP_int16)SKP_SAT16( out32 );
+ }
+ } else {
+ /* Odd order or not 4-byte aligned coefficient array */
+ for( k = 0; k < len; k++ ) {
+ in16 = in[ k ];
+ out32 = SKP_LSHIFT( in16, 12 ) - S[ 0 ];
+ out32 = SKP_RSHIFT_ROUND( out32, 12 );
+
+ for( d = 0; d < order - 1; d++ ) {
+ S[ d ] = SKP_SMLABB_ovflw( S[ d + 1 ], in16, B[ d ] );
+ }
+ S[ order - 1 ] = SKP_SMULBB( in16, B[ order - 1 ] );
+
+ /* Limit */
+ out[ k ] = (SKP_int16)SKP_SAT16( out32 );
+ }
+ }
+}
+
+void SKP_Silk_MA_Prediction_Q13(
+ const SKP_int16 *in, /* I: input signal */
+ const SKP_int16 *B, /* I: MA prediction coefficients, Q13 [order] */
+ SKP_int32 *S, /* I/O: state vector [order] */
+ SKP_int16 *out, /* O: output signal */
+ SKP_int32 len, /* I: signal length */
+ SKP_int32 order /* I: filter order */
+)
+{
+ SKP_int k, d, in16;
+ SKP_int32 out32, B32;
+
+ if( ( order & 1 ) == 0 && (SKP_int32)( (SKP_int_ptr_size)B & 3 ) == 0 ) {
+ /* Even order and 4-byte aligned coefficient array */
+
+ /* NOTE: the code below loads two int16 values in an int32, and multiplies each using the */
+ /* SMLABB and SMLABT instructions. On a big-endian CPU the two int16 variables would be */
+ /* loaded in reverse order and the code will give the wrong result. In that case swapping */
+ /* the SMLABB and SMLABT instructions should solve the problem. */
+ for( k = 0; k < len; k++ ) {
+ in16 = in[ k ];
+ out32 = SKP_LSHIFT( in16, 13 ) - S[ 0 ];
+ out32 = SKP_RSHIFT_ROUND( out32, 13 );
+
+ for( d = 0; d < order - 2; d += 2 ) {
+ B32 = *( (SKP_int32*)&B[ d ] ); /* read two coefficients at once */
+ S[ d ] = SKP_SMLABB( S[ d + 1 ], in16, B32 );
+ S[ d + 1 ] = SKP_SMLABT( S[ d + 2 ], in16, B32 );
+ }
+ B32 = *( (SKP_int32*)&B[ d ] ); /* read two coefficients at once */
+ S[ order - 2 ] = SKP_SMLABB( S[ order - 1 ], in16, B32 );
+ S[ order - 1 ] = SKP_SMULBT( in16, B32 );
+
+ /* Limit */
+ out[ k ] = (SKP_int16)SKP_SAT16( out32 );
+ }
+ } else {
+ /* Odd order or not 4-byte aligned coefficient array */
+ for( k = 0; k < len; k++ ) {
+ in16 = in[ k ];
+ out32 = SKP_LSHIFT( in16, 13 ) - S[ 0 ];
+ out32 = SKP_RSHIFT_ROUND( out32, 13 );
+
+ for( d = 0; d < order - 1; d++ ) {
+ S[ d ] = SKP_SMLABB( S[ d + 1 ], in16, B[ d ] );
+ }
+ S[ order - 1 ] = SKP_SMULBB( in16, B[ order - 1 ] );
+
+ /* Limit */
+ out[ k ] = (SKP_int16)SKP_SAT16( out32 );
+ }
+ }
+}
+/* Variable order MA prediction error filter. */
+/* Inverse filter of SKP_Silk_LPC_synthesis_filter */
+void SKP_Silk_LPC_analysis_filter(
+ const SKP_int16 *in, /* I: Input signal */
+ const SKP_int16 *B, /* I: MA prediction coefficients, Q12 [order] */
+ SKP_int16 *S, /* I/O: State vector [order] */
+ SKP_int16 *out, /* O: Output signal */
+ const SKP_int32 len, /* I: Signal length */
+ const SKP_int32 Order /* I: Filter order */
+)
+{
+ SKP_int k, j, idx, Order_half = SKP_RSHIFT( Order, 1 );
+ SKP_int32 Btmp, B_align_Q12[ SigProc_MAX_ORDER_LPC >> 1 ], out32_Q12, out32;
+ SKP_int16 SA, SB;
+ /* Order must be even */
+ SKP_assert( 2 * Order_half == Order );
+
+ /* Combine two A_Q12 values and ensure 32-bit alignment */
+ for( k = 0; k < Order_half; k++ ) {
+ idx = SKP_SMULBB( 2, k );
+ B_align_Q12[ k ] = ( ( (SKP_int32)B[ idx ] ) & 0x0000ffff ) | SKP_LSHIFT( (SKP_int32)B[ idx + 1 ], 16 );
+ }
+
+ /* S[] values are in Q0 */
+ for( k = 0; k < len; k++ ) {
+ SA = S[ 0 ];
+ out32_Q12 = 0;
+ for( j = 0; j < ( Order_half - 1 ); j++ ) {
+ idx = SKP_SMULBB( 2, j ) + 1;
+ /* Multiply-add two prediction coefficients for each loop */
+ Btmp = B_align_Q12[ j ];
+ SB = S[ idx ];
+ S[ idx ] = SA;
+ out32_Q12 = SKP_SMLABB( out32_Q12, SA, Btmp );
+ out32_Q12 = SKP_SMLABT( out32_Q12, SB, Btmp );
+ SA = S[ idx + 1 ];
+ S[ idx + 1 ] = SB;
+ }
+
+ /* Unrolled loop: epilog */
+ Btmp = B_align_Q12[ Order_half - 1 ];
+ SB = S[ Order - 1 ];
+ S[ Order - 1 ] = SA;
+ out32_Q12 = SKP_SMLABB( out32_Q12, SA, Btmp );
+ out32_Q12 = SKP_SMLABT( out32_Q12, SB, Btmp );
+
+ /* Subtract prediction */
+ out32_Q12 = SKP_SUB_SAT32( SKP_LSHIFT( (SKP_int32)in[ k ], 12 ), out32_Q12 );
+
+ /* Scale to Q0 */
+ out32 = SKP_RSHIFT_ROUND( out32_Q12, 12 );
+
+ /* Saturate output */
+ out[ k ] = (SKP_int16)SKP_SAT16( out32 );
+
+ /* Move input line */
+ S[ 0 ] = in[ k ];
+ }
+}
--- /dev/null
+++ b/src/SKP_Silk_NLSF2A.c
@@ -1,0 +1,150 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+/* conversion between prediction filter coefficients and LSFs */
+/* order should be even */
+/* a piecewise linear approximation maps LSF <-> cos(LSF) */
+/* therefore the result is not accurate LSFs, but the two */
+/* function are accurate inverses of each other */
+
+#include "SKP_Silk_SigProc_FIX.h"
+
+/* helper function for NLSF2A(..) */
+SKP_INLINE void SKP_Silk_NLSF2A_find_poly(
+ SKP_int32 *out, /* o intermediate polynomial, Q20 */
+ const SKP_int32 *cLSF, /* i vector of interleaved 2*cos(LSFs), Q20 */
+ SKP_int dd /* i polynomial order (= 1/2 * filter order) */
+)
+{
+ SKP_int k, n;
+ SKP_int32 ftmp;
+
+ out[0] = SKP_LSHIFT( 1, 20 );
+ out[1] = -cLSF[0];
+ for( k = 1; k < dd; k++ ) {
+ ftmp = cLSF[2*k]; // Q20
+ out[k+1] = SKP_LSHIFT( out[k-1], 1 ) - (SKP_int32)SKP_RSHIFT_ROUND64( SKP_SMULL( ftmp, out[k] ), 20 );
+ for( n = k; n > 1; n-- ) {
+ out[n] += out[n-2] - (SKP_int32)SKP_RSHIFT_ROUND64( SKP_SMULL( ftmp, out[n-1] ), 20 );
+ }
+ out[1] -= ftmp;
+ }
+}
+
+/* compute whitening filter coefficients from normalized line spectral frequencies */
+void SKP_Silk_NLSF2A(
+ SKP_int16 *a, /* o monic whitening filter coefficients in Q12, [d] */
+ const SKP_int *NLSF, /* i normalized line spectral frequencies in Q15, [d] */
+ const SKP_int d /* i filter order (should be even) */
+)
+{
+ SKP_int k, i, dd;
+ SKP_int32 cos_LSF_Q20[SigProc_MAX_ORDER_LPC];
+ SKP_int32 P[SigProc_MAX_ORDER_LPC/2+1], Q[SigProc_MAX_ORDER_LPC/2+1];
+ SKP_int32 Ptmp, Qtmp;
+ SKP_int32 f_int;
+ SKP_int32 f_frac;
+ SKP_int32 cos_val, delta;
+ SKP_int32 a_int32[SigProc_MAX_ORDER_LPC];
+ SKP_int32 maxabs, absval, idx=0, sc_Q16;
+
+ SKP_assert(LSF_COS_TAB_SZ_FIX == 128);
+
+ /* convert LSFs to 2*cos(LSF(i)), using piecewise linear curve from table */
+ for( k = 0; k < d; k++ ) {
+ SKP_assert(NLSF[k] >= 0 );
+ SKP_assert(NLSF[k] <= 32767 );
+
+ /* f_int on a scale 0-127 (rounded down) */
+ f_int = SKP_RSHIFT( NLSF[k], 15 - 7 );
+
+ /* f_frac, range: 0..255 */
+ f_frac = NLSF[k] - SKP_LSHIFT( f_int, 15 - 7 );
+
+ SKP_assert(f_int >= 0);
+ SKP_assert(f_int < LSF_COS_TAB_SZ_FIX );
+
+ /* Read start and end value from table */
+ cos_val = SKP_Silk_LSFCosTab_FIX_Q12[ f_int ]; /* Q12 */
+ delta = SKP_Silk_LSFCosTab_FIX_Q12[ f_int + 1 ] - cos_val; /* Q12, with a range of 0..200 */
+
+ /* Linear interpolation */
+ cos_LSF_Q20[k] = SKP_LSHIFT( cos_val, 8 ) + SKP_MUL( delta, f_frac ); /* Q20 */
+ }
+
+ dd = SKP_RSHIFT( d, 1 );
+
+ /* generate even and odd polynomials using convolution */
+ SKP_Silk_NLSF2A_find_poly( P, &cos_LSF_Q20[0], dd );
+ SKP_Silk_NLSF2A_find_poly( Q, &cos_LSF_Q20[1], dd );
+
+ /* convert even and odd polynomials to SKP_int32 Q12 filter coefs */
+ for( k = 0; k < dd; k++ ) {
+ Ptmp = P[k+1] + P[k];
+ Qtmp = Q[k+1] - Q[k];
+
+ /* the Ptmp and Qtmp values at this stage need to fit in int32 */
+
+ a_int32[k] = -SKP_RSHIFT_ROUND( Ptmp + Qtmp, 9 ); /* Q20 -> Q12 */
+ a_int32[d-k-1] = SKP_RSHIFT_ROUND( Qtmp - Ptmp, 9 ); /* Q20 -> Q12 */
+ }
+
+ /* Limit the maximum absolute value of the prediction coefficients */
+ for( i = 0; i < 10; i++ ) {
+ /* Find maximum absolute value and its index */
+ maxabs = 0;
+ for( k = 0; k < d; k++ ) {
+ absval = SKP_abs( a_int32[k] );
+ if( absval > maxabs ) {
+ maxabs = absval;
+ idx = k;
+ }
+ }
+
+ if( maxabs > SKP_int16_MAX ) {
+ /* Reduce magnitude of prediction coefficients */
+ sc_Q16 = 65470 - SKP_DIV32( SKP_MUL( 65470 >> 2, maxabs - SKP_int16_MAX ),
+ SKP_RSHIFT32( SKP_MUL( maxabs, idx + 1), 2 ) );
+ SKP_Silk_bwexpander_32( a_int32, d, sc_Q16 );
+ } else {
+ break;
+ }
+ }
+
+ /* Reached the last iteration */
+ if( i == 10 ) {
+ SKP_assert(0);
+ for( k = 0; k < d; k++ ) {
+ a_int32[k] = SKP_SAT16( a_int32[k] );
+ }
+ }
+
+ /* Return as SKP_int16 Q12 coefficients */
+ for( k = 0; k < d; k++ ) {
+ a[k] = (SKP_int16)a_int32[k];
+ }
+}
--- /dev/null
+++ b/src/SKP_Silk_NLSF2A_stable.c
@@ -1,0 +1,57 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_main.h"
+
+/* Convert NLSF parameters to stable AR prediction filter coefficients */
+void SKP_Silk_NLSF2A_stable(
+ SKP_int16 pAR_Q12[ MAX_LPC_ORDER ], /* O Stabilized AR coefs [LPC_order] */
+ const SKP_int pNLSF[ MAX_LPC_ORDER ], /* I NLSF vector [LPC_order] */
+ const SKP_int LPC_order /* I LPC/LSF order */
+)
+{
+ SKP_int i;
+ SKP_int32 invGain_Q30;
+
+ SKP_Silk_NLSF2A( pAR_Q12, pNLSF, LPC_order );
+
+ /* Ensure stable LPCs */
+ for( i = 0; i < MAX_LPC_STABILIZE_ITERATIONS; i++ ) {
+ if( SKP_Silk_LPC_inverse_pred_gain( &invGain_Q30, pAR_Q12, LPC_order ) == 1 ) {
+ SKP_Silk_bwexpander( pAR_Q12, LPC_order, 65536 - SKP_SMULBB( 66, i ) ); /* 66_Q16 = 0.001 */
+ } else {
+ break;
+ }
+ }
+
+ /* Reached the last iteration */
+ if( i == MAX_LPC_STABILIZE_ITERATIONS ) {
+ for( i = 0; i < LPC_order; i++ ) {
+ pAR_Q12[ i ] = 0;
+ }
+ }
+}
--- /dev/null
+++ b/src/SKP_Silk_NLSF_MSVQ_decode.c
@@ -1,0 +1,91 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_main.h"
+
+/* NLSF vector decoder */
+void SKP_Silk_NLSF_MSVQ_decode(
+ SKP_int *pNLSF_Q15, /* O Pointer to decoded output vector [LPC_ORDER x 1] */
+ const SKP_Silk_NLSF_CB_struct *psNLSF_CB, /* I Pointer to NLSF codebook struct */
+ const SKP_int *NLSFIndices, /* I Pointer to NLSF indices [nStages x 1] */
+ const SKP_int LPC_order /* I LPC order used */
+)
+{
+ const SKP_int16 *pCB_element;
+ SKP_int s;
+ SKP_int i;
+
+ /* Check that each index is within valid range */
+ SKP_assert( 0 <= NLSFIndices[ 0 ] && NLSFIndices[ 0 ] < psNLSF_CB->CBStages[ 0 ].nVectors );
+
+ /* Point to the first vector element */
+ pCB_element = &psNLSF_CB->CBStages[ 0 ].CB_NLSF_Q15[ SKP_MUL( NLSFIndices[ 0 ], LPC_order ) ];
+
+ /* Initialize with the codebook vector from stage 0 */
+ for( i = 0; i < LPC_order; i++ ) {
+ pNLSF_Q15[ i ] = ( SKP_int )pCB_element[ i ];
+ }
+
+ for( s = 1; s < psNLSF_CB->nStages; s++ ) {
+ /* Check that each index is within valid range */
+ SKP_assert( 0 <= NLSFIndices[ s ] && NLSFIndices[ s ] < psNLSF_CB->CBStages[ s ].nVectors );
+
+ if( LPC_order == 16 ) {
+ /* Point to the first vector element */
+ pCB_element = &psNLSF_CB->CBStages[ s ].CB_NLSF_Q15[ SKP_LSHIFT( NLSFIndices[ s ], 4 ) ];
+
+ /* Add the codebook vector from the current stage */
+ pNLSF_Q15[ 0 ] += pCB_element[ 0 ];
+ pNLSF_Q15[ 1 ] += pCB_element[ 1 ];
+ pNLSF_Q15[ 2 ] += pCB_element[ 2 ];
+ pNLSF_Q15[ 3 ] += pCB_element[ 3 ];
+ pNLSF_Q15[ 4 ] += pCB_element[ 4 ];
+ pNLSF_Q15[ 5 ] += pCB_element[ 5 ];
+ pNLSF_Q15[ 6 ] += pCB_element[ 6 ];
+ pNLSF_Q15[ 7 ] += pCB_element[ 7 ];
+ pNLSF_Q15[ 8 ] += pCB_element[ 8 ];
+ pNLSF_Q15[ 9 ] += pCB_element[ 9 ];
+ pNLSF_Q15[ 10 ] += pCB_element[ 10 ];
+ pNLSF_Q15[ 11 ] += pCB_element[ 11 ];
+ pNLSF_Q15[ 12 ] += pCB_element[ 12 ];
+ pNLSF_Q15[ 13 ] += pCB_element[ 13 ];
+ pNLSF_Q15[ 14 ] += pCB_element[ 14 ];
+ pNLSF_Q15[ 15 ] += pCB_element[ 15 ];
+ } else {
+ /* Point to the first vector element */
+ pCB_element = &psNLSF_CB->CBStages[ s ].CB_NLSF_Q15[ SKP_SMULBB( NLSFIndices[ s ], LPC_order ) ];
+
+ /* Add the codebook vector from the current stage */
+ for( i = 0; i < LPC_order; i++ ) {
+ pNLSF_Q15[ i ] += pCB_element[ i ];
+ }
+ }
+ }
+
+ /* NLSF stabilization */
+ SKP_Silk_NLSF_stabilize( pNLSF_Q15, psNLSF_CB->NDeltaMin_Q15, LPC_order );
+}
--- /dev/null
+++ b/src/SKP_Silk_NLSF_MSVQ_encode_FIX.c
@@ -1,0 +1,231 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_main_FIX.h"
+
+/***********************/
+/* NLSF vector encoder */
+/***********************/
+void SKP_Silk_NLSF_MSVQ_encode_FIX(
+ SKP_int *NLSFIndices, /* O Codebook path vector [ CB_STAGES ] */
+ SKP_int *pNLSF_Q15, /* I/O Quantized NLSF vector [ LPC_ORDER ] */
+ const SKP_Silk_NLSF_CB_struct *psNLSF_CB, /* I Codebook object */
+ const SKP_int *pNLSF_q_Q15_prev, /* I Prev. quantized NLSF vector [LPC_ORDER] */
+ const SKP_int *pW_Q6, /* I NLSF weight vector [ LPC_ORDER ] */
+ const SKP_int NLSF_mu_Q15, /* I Rate weight for the RD optimization */
+ const SKP_int NLSF_mu_fluc_red_Q16, /* I Fluctuation reduction error weight */
+ const SKP_int NLSF_MSVQ_Survivors, /* I Max survivors from each stage */
+ const SKP_int LPC_order, /* I LPC order */
+ const SKP_int deactivate_fluc_red /* I Deactivate fluctuation reduction */
+)
+{
+ SKP_int i, s, k, cur_survivors = 0, prev_survivors, input_index, cb_index, bestIndex;
+ SKP_int32 rateDistThreshold_Q18;
+ SKP_int pNLSF_in_Q15[ MAX_LPC_ORDER ];
+#if( NLSF_MSVQ_FLUCTUATION_REDUCTION == 1 )
+ SKP_int32 se_Q15, wsse_Q20, bestRateDist_Q20;
+#endif
+
+#if( LOW_COMPLEXITY_ONLY == 1 )
+ SKP_int32 pRateDist_Q18[ NLSF_MSVQ_TREE_SEARCH_MAX_VECTORS_EVALUATED_LC_MODE ];
+ SKP_int32 pRate_Q5[ MAX_NLSF_MSVQ_SURVIVORS_LC_MODE ];
+ SKP_int32 pRate_new_Q5[ MAX_NLSF_MSVQ_SURVIVORS_LC_MODE ];
+ SKP_int pTempIndices[ MAX_NLSF_MSVQ_SURVIVORS_LC_MODE ];
+ SKP_int pPath[ MAX_NLSF_MSVQ_SURVIVORS_LC_MODE * NLSF_MSVQ_MAX_CB_STAGES ];
+ SKP_int pPath_new[ MAX_NLSF_MSVQ_SURVIVORS_LC_MODE * NLSF_MSVQ_MAX_CB_STAGES ];
+ SKP_int pRes_Q15[ MAX_NLSF_MSVQ_SURVIVORS_LC_MODE * MAX_LPC_ORDER ];
+ SKP_int pRes_new_Q15[ MAX_NLSF_MSVQ_SURVIVORS_LC_MODE * MAX_LPC_ORDER ];
+#else
+ SKP_int32 pRateDist_Q18[ NLSF_MSVQ_TREE_SEARCH_MAX_VECTORS_EVALUATED ];
+ SKP_int32 pRate_Q5[ MAX_NLSF_MSVQ_SURVIVORS ];
+ SKP_int32 pRate_new_Q5[ MAX_NLSF_MSVQ_SURVIVORS ];
+ SKP_int pTempIndices[ MAX_NLSF_MSVQ_SURVIVORS ];
+ SKP_int pPath[ MAX_NLSF_MSVQ_SURVIVORS * NLSF_MSVQ_MAX_CB_STAGES ];
+ SKP_int pPath_new[ MAX_NLSF_MSVQ_SURVIVORS * NLSF_MSVQ_MAX_CB_STAGES ];
+ SKP_int pRes_Q15[ MAX_NLSF_MSVQ_SURVIVORS * MAX_LPC_ORDER ];
+ SKP_int pRes_new_Q15[ MAX_NLSF_MSVQ_SURVIVORS * MAX_LPC_ORDER ];
+#endif
+
+ const SKP_int *pConstInt;
+ SKP_int *pInt;
+ const SKP_int16 *pCB_element;
+ const SKP_Silk_NLSF_CBS *pCurrentCBStage;
+
+ SKP_assert( NLSF_MSVQ_Survivors <= MAX_NLSF_MSVQ_SURVIVORS );
+ SKP_assert( ( LOW_COMPLEXITY_ONLY == 0 ) || ( NLSF_MSVQ_Survivors <= MAX_NLSF_MSVQ_SURVIVORS_LC_MODE ) );
+
+
+
+ /* Copy the input vector */
+ SKP_memcpy( pNLSF_in_Q15, pNLSF_Q15, LPC_order * sizeof( SKP_int ) );
+
+ /****************************************************/
+ /* Tree search for the multi-stage vector quantizer */
+ /****************************************************/
+
+ /* Clear accumulated rates */
+ SKP_memset( pRate_Q5, 0, NLSF_MSVQ_Survivors * sizeof( SKP_int32 ) );
+
+ /* Copy NLSFs into residual signal vector */
+ for( i = 0; i < LPC_order; i++ ) {
+ pRes_Q15[ i ] = pNLSF_Q15[ i ];
+ }
+
+ /* Set first stage values */
+ prev_survivors = 1;
+
+ /* Loop over all stages */
+ for( s = 0; s < psNLSF_CB->nStages; s++ ) {
+
+ /* Set a pointer to the current stage codebook */
+ pCurrentCBStage = &psNLSF_CB->CBStages[ s ];
+
+ /* Calculate the number of survivors in the current stage */
+ cur_survivors = SKP_min_32( NLSF_MSVQ_Survivors, SKP_SMULBB( prev_survivors, pCurrentCBStage->nVectors ) );
+
+#if( NLSF_MSVQ_FLUCTUATION_REDUCTION == 0 )
+ /* Find a single best survivor in the last stage, if we */
+ /* do not need candidates for fluctuation reduction */
+ if( s == psNLSF_CB->nStages - 1 ) {
+ cur_survivors = 1;
+ }
+#endif
+
+ /* Nearest neighbor clustering for multiple input data vectors */
+ SKP_Silk_NLSF_VQ_rate_distortion_FIX( pRateDist_Q18, pCurrentCBStage, pRes_Q15, pW_Q6,
+ pRate_Q5, NLSF_mu_Q15, prev_survivors, LPC_order );
+
+ /* Sort the rate-distortion errors */
+ SKP_Silk_insertion_sort_increasing( pRateDist_Q18, pTempIndices,
+ prev_survivors * pCurrentCBStage->nVectors, cur_survivors );
+
+ /* Discard survivors with rate-distortion values too far above the best one */
+ if( pRateDist_Q18[ 0 ] < SKP_int32_MAX / NLSF_MSVQ_SURV_MAX_REL_RD ) {
+ rateDistThreshold_Q18 = SKP_MUL( NLSF_MSVQ_SURV_MAX_REL_RD, pRateDist_Q18[ 0 ] );
+ while( pRateDist_Q18[ cur_survivors - 1 ] > rateDistThreshold_Q18 && cur_survivors > 1 ) {
+ cur_survivors--;
+ }
+ }
+ /* Update accumulated codebook contributions for the 'cur_survivors' best codebook indices */
+ for( k = 0; k < cur_survivors; k++ ) {
+ if( s > 0 ) {
+ /* Find the indices of the input and the codebook vector */
+ if( pCurrentCBStage->nVectors == 8 ) {
+ input_index = SKP_RSHIFT( pTempIndices[ k ], 3 );
+ cb_index = pTempIndices[ k ] & 7;
+ } else {
+ input_index = SKP_DIV32_16( pTempIndices[ k ], pCurrentCBStage->nVectors );
+ cb_index = pTempIndices[ k ] - SKP_SMULBB( input_index, pCurrentCBStage->nVectors );
+ }
+ } else {
+ /* Find the indices of the input and the codebook vector */
+ input_index = 0;
+ cb_index = pTempIndices[ k ];
+ }
+
+ /* Subtract new contribution from the previous residual vector for each of 'cur_survivors' */
+ pConstInt = &pRes_Q15[ SKP_SMULBB( input_index, LPC_order ) ];
+ pCB_element = &pCurrentCBStage->CB_NLSF_Q15[ SKP_SMULBB( cb_index, LPC_order ) ];
+ pInt = &pRes_new_Q15[ SKP_SMULBB( k, LPC_order ) ];
+ for( i = 0; i < LPC_order; i++ ) {
+ pInt[ i ] = pConstInt[ i ] - ( SKP_int )pCB_element[ i ];
+ }
+
+ /* Update accumulated rate for stage 1 to the current */
+ pRate_new_Q5[ k ] = pRate_Q5[ input_index ] + pCurrentCBStage->Rates_Q5[ cb_index ];
+
+ /* Copy paths from previous matrix, starting with the best path */
+ pConstInt = &pPath[ SKP_SMULBB( input_index, psNLSF_CB->nStages ) ];
+ pInt = &pPath_new[ SKP_SMULBB( k, psNLSF_CB->nStages ) ];
+ for( i = 0; i < s; i++ ) {
+ pInt[ i ] = pConstInt[ i ];
+ }
+ /* Write the current stage indices for the 'cur_survivors' to the best path matrix */
+ pInt[ s ] = cb_index;
+ }
+
+ if( s < psNLSF_CB->nStages - 1 ) {
+ /* Copy NLSF residual matrix for next stage */
+ SKP_memcpy( pRes_Q15, pRes_new_Q15, SKP_SMULBB( cur_survivors, LPC_order ) * sizeof( SKP_int ) );
+
+ /* Copy rate vector for next stage */
+ SKP_memcpy( pRate_Q5, pRate_new_Q5, cur_survivors * sizeof( SKP_int32 ) );
+
+ /* Copy best path matrix for next stage */
+ SKP_memcpy( pPath, pPath_new, SKP_SMULBB( cur_survivors, psNLSF_CB->nStages ) * sizeof( SKP_int ) );
+ }
+
+ prev_survivors = cur_survivors;
+ }
+
+ /* (Preliminary) index of the best survivor, later to be decoded */
+ bestIndex = 0;
+
+#if( NLSF_MSVQ_FLUCTUATION_REDUCTION == 1 )
+ /******************************/
+ /* NLSF fluctuation reduction */
+ /******************************/
+ if( deactivate_fluc_red != 1 ) {
+
+ /* Search among all survivors, now taking also weighted fluctuation errors into account */
+ bestRateDist_Q20 = SKP_int32_MAX;
+ for( s = 0; s < cur_survivors; s++ ) {
+ /* Decode survivor to compare with previous quantized NLSF vector */
+ SKP_Silk_NLSF_MSVQ_decode( pNLSF_Q15, psNLSF_CB, &pPath_new[ SKP_SMULBB( s, psNLSF_CB->nStages ) ], LPC_order );
+
+ /* Compare decoded NLSF vector with the previously quantized vector */
+ wsse_Q20 = 0;
+ for( i = 0; i < LPC_order; i += 2 ) {
+ /* Compute weighted squared quantization error for index i */
+ se_Q15 = pNLSF_Q15[ i ] - pNLSF_q_Q15_prev[ i ]; // range: [ -32767 : 32767 ]
+ wsse_Q20 = SKP_SMLAWB( wsse_Q20, SKP_SMULBB( se_Q15, se_Q15 ), pW_Q6[ i ] );
+
+ /* Compute weighted squared quantization error for index i + 1 */
+ se_Q15 = pNLSF_Q15[ i + 1 ] - pNLSF_q_Q15_prev[ i + 1 ]; // range: [ -32767 : 32767 ]
+ wsse_Q20 = SKP_SMLAWB( wsse_Q20, SKP_SMULBB( se_Q15, se_Q15 ), pW_Q6[ i + 1 ] );
+ }
+ SKP_assert( wsse_Q20 >= 0 );
+
+ /* Add the fluctuation reduction penalty to the rate distortion error */
+ wsse_Q20 = SKP_ADD_POS_SAT32( pRateDist_Q18[ s ], SKP_SMULWB( wsse_Q20, NLSF_mu_fluc_red_Q16 ) );
+
+ /* Keep index of best survivor */
+ if( wsse_Q20 < bestRateDist_Q20 ) {
+ bestRateDist_Q20 = wsse_Q20;
+ bestIndex = s;
+ }
+ }
+ }
+#endif
+
+ /* Copy best path to output argument */
+ SKP_memcpy( NLSFIndices, &pPath_new[ SKP_SMULBB( bestIndex, psNLSF_CB->nStages ) ], psNLSF_CB->nStages * sizeof( SKP_int ) );
+
+ /* Decode and stabilize the best survivor */
+ SKP_Silk_NLSF_MSVQ_decode( pNLSF_Q15, psNLSF_CB, NLSFIndices, LPC_order );
+
+}
--- /dev/null
+++ b/src/SKP_Silk_NLSF_VQ_rate_distortion_FIX.c
@@ -1,0 +1,61 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_main_FIX.h"
+
+/* Rate-Distortion calculations for multiple input data vectors */
+void SKP_Silk_NLSF_VQ_rate_distortion_FIX(
+ SKP_int32 *pRD_Q20, /* O Rate-distortion values [psNLSF_CBS->nVectors*N] */
+ const SKP_Silk_NLSF_CBS *psNLSF_CBS, /* I NLSF codebook stage struct */
+ const SKP_int *in_Q15, /* I Input vectors to be quantized */
+ const SKP_int *w_Q6, /* I Weight vector */
+ const SKP_int32 *rate_acc_Q5, /* I Accumulated rates from previous stage */
+ const SKP_int mu_Q15, /* I Weight between weighted error and rate */
+ const SKP_int N, /* I Number of input vectors to be quantized */
+ const SKP_int LPC_order /* I LPC order */
+)
+{
+ SKP_int i, n;
+ SKP_int32 *pRD_vec_Q20;
+
+ /* Compute weighted quantization errors for all input vectors over one codebook stage */
+ SKP_Silk_NLSF_VQ_sum_error_FIX( pRD_Q20, in_Q15, w_Q6, psNLSF_CBS->CB_NLSF_Q15,
+ N, psNLSF_CBS->nVectors, LPC_order );
+
+ /* Loop over input vectors */
+ pRD_vec_Q20 = pRD_Q20;
+ for( n = 0; n < N; n++ ) {
+ /* Add rate cost to error for each codebook vector */
+ for( i = 0; i < psNLSF_CBS->nVectors; i++ ) {
+ SKP_assert( rate_acc_Q5[ n ] + psNLSF_CBS->Rates_Q5[ i ] >= 0 );
+ SKP_assert( rate_acc_Q5[ n ] + psNLSF_CBS->Rates_Q5[ i ] <= SKP_int16_MAX );
+ pRD_vec_Q20[ i ] = SKP_SMLABB( pRD_vec_Q20[ i ], rate_acc_Q5[ n ] + psNLSF_CBS->Rates_Q5[ i ], mu_Q15 );
+ SKP_assert( pRD_vec_Q20[ i ] >= 0 );
+ }
+ pRD_vec_Q20 += psNLSF_CBS->nVectors;
+ }
+}
--- /dev/null
+++ b/src/SKP_Silk_NLSF_VQ_sum_error_FIX.c
@@ -1,0 +1,79 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_main_FIX.h"
+
+/* Compute weighted quantization errors for an LPC_order element input vector, over one codebook stage */
+void SKP_Silk_NLSF_VQ_sum_error_FIX(
+ SKP_int32 *err_Q20, /* O Weighted quantization errors [N*K] */
+ const SKP_int *in_Q15, /* I Input vectors to be quantized [N*LPC_order] */
+ const SKP_int *w_Q6, /* I Weighting vectors [N*LPC_order] */
+ const SKP_int16 *pCB_Q15, /* I Codebook vectors [K*LPC_order] */
+ const SKP_int N, /* I Number of input vectors */
+ const SKP_int K, /* I Number of codebook vectors */
+ const SKP_int LPC_order /* I Number of LPCs */
+)
+{
+ SKP_int i, n, m;
+ SKP_int32 diff_Q15, sum_error, Wtmp_Q6;
+ SKP_int32 Wcpy_Q6[ MAX_LPC_ORDER / 2 ];
+ const SKP_int16 *cb_vec_Q15;
+
+ SKP_assert( LPC_order <= 16 );
+ SKP_assert( ( LPC_order & 1 ) == 0 );
+
+ /* Copy to local stack and pack two weights per int32 */
+ for( m = 0; m < SKP_RSHIFT( LPC_order, 1 ); m++ ) {
+ Wcpy_Q6[ m ] = w_Q6[ 2 * m ] | SKP_LSHIFT( ( SKP_int32 )w_Q6[ 2 * m + 1 ], 16 );
+ }
+
+ /* Loop over input vectors */
+ for( n = 0; n < N; n++ ) {
+ /* Loop over codebook */
+ cb_vec_Q15 = pCB_Q15;
+ for( i = 0; i < K; i++ ) {
+ sum_error = 0;
+ for( m = 0; m < LPC_order; m += 2 ) {
+ /* Get two weights packed in an int32 */
+ Wtmp_Q6 = Wcpy_Q6[ SKP_RSHIFT( m, 1 ) ];
+
+ /* Compute weighted squared quantization error for index m */
+ diff_Q15 = in_Q15[ m ] - *cb_vec_Q15++; // range: [ -32767 : 32767 ]
+ sum_error = SKP_SMLAWB( sum_error, SKP_SMULBB( diff_Q15, diff_Q15 ), Wtmp_Q6 );
+
+ /* Compute weighted squared quantization error for index m + 1 */
+ diff_Q15 = in_Q15[m + 1] - *cb_vec_Q15++; // range: [ -32767 : 32767 ]
+ sum_error = SKP_SMLAWT( sum_error, SKP_SMULBB( diff_Q15, diff_Q15 ), Wtmp_Q6 );
+ }
+ SKP_assert( sum_error >= 0 );
+ err_Q20[ i ] = sum_error;
+ }
+ err_Q20 += K;
+ in_Q15 += LPC_order;
+ }
+}
+
--- /dev/null
+++ b/src/SKP_Silk_NLSF_VQ_weights_laroia.c
@@ -1,0 +1,78 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_SigProc_FIX.h"
+
+/*
+R. Laroia, N. Phamdo and N. Farvardin, "Robust and Efficient Quantization of Speech LSP
+Parameters Using Structured Vector Quantization", Proc. IEEE Int. Conf. Acoust., Speech,
+Signal Processing, pp. 641-644, 1991.
+*/
+
+#define Q_OUT 6
+
+/* Laroia low complexity NLSF weights */
+void SKP_Silk_NLSF_VQ_weights_laroia(
+ SKP_int *pNLSFW_Q6, /* O: Pointer to input vector weights [D x 1] */
+ const SKP_int *pNLSF_Q15, /* I: Pointer to input vector [D x 1] */
+ const SKP_int D /* I: Input vector dimension (even) */
+)
+{
+ SKP_int k;
+ SKP_int32 tmp1_int, tmp2_int;
+
+ /* Check that we are guaranteed to end up within the required range */
+ SKP_assert( D > 0 );
+ SKP_assert( ( D & 1 ) == 0 );
+
+ /* First value */
+ tmp1_int = SKP_max_int( pNLSF_Q15[ 0 ], 1 );
+ tmp1_int = SKP_DIV32_16( 1 << ( 15 + Q_OUT ), tmp1_int );
+ tmp2_int = SKP_max_int( pNLSF_Q15[ 1 ] - pNLSF_Q15[ 0 ], 1 );
+ tmp2_int = SKP_DIV32_16( 1 << ( 15 + Q_OUT ), tmp2_int );
+ pNLSFW_Q6[ 0 ] = (SKP_int)SKP_min_int( tmp1_int + tmp2_int, SKP_int16_MAX );
+ SKP_assert( pNLSFW_Q6[ 0 ] > 0 );
+
+ /* Main loop */
+ for( k = 1; k < D - 1; k += 2 ) {
+ tmp1_int = SKP_max_int( pNLSF_Q15[ k + 1 ] - pNLSF_Q15[ k ], 1 );
+ tmp1_int = SKP_DIV32_16( 1 << ( 15 + Q_OUT ), tmp1_int );
+ pNLSFW_Q6[ k ] = (SKP_int)SKP_min_int( tmp1_int + tmp2_int, SKP_int16_MAX );
+ SKP_assert( pNLSFW_Q6[ k ] > 0 );
+
+ tmp2_int = SKP_max_int( pNLSF_Q15[ k + 2 ] - pNLSF_Q15[ k + 1 ], 1 );
+ tmp2_int = SKP_DIV32_16( 1 << ( 15 + Q_OUT ), tmp2_int );
+ pNLSFW_Q6[ k + 1 ] = (SKP_int)SKP_min_int( tmp1_int + tmp2_int, SKP_int16_MAX );
+ SKP_assert( pNLSFW_Q6[ k + 1 ] > 0 );
+ }
+
+ /* Last value */
+ tmp1_int = SKP_max_int( ( 1 << 15 ) - pNLSF_Q15[ D - 1 ], 1 );
+ tmp1_int = SKP_DIV32_16( 1 << ( 15 + Q_OUT ), tmp1_int );
+ pNLSFW_Q6[ D - 1 ] = (SKP_int)SKP_min_int( tmp1_int + tmp2_int, SKP_int16_MAX );
+ SKP_assert( pNLSFW_Q6[ D - 1 ] > 0 );
+}
--- /dev/null
+++ b/src/SKP_Silk_NLSF_stabilize.c
@@ -1,0 +1,154 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+/* NLSF stabilizer: */
+/* */
+/* - Moves NLSFs futher apart if they are too close */
+/* - Moves NLSFs away from borders if they are too close */
+/* - High effort to achieve a modification with minimum */
+/* Euclidean distance to input vector */
+/* - Output are sorted NLSF coefficients */
+/* */
+#include "SKP_Silk_SigProc_FIX.h"
+
+/* Constant Definitions */
+#define MAX_LOOPS 20
+
+/* NLSF stabilizer, for a single input data vector */
+void SKP_Silk_NLSF_stabilize(
+ SKP_int *NLSF_Q15, /* I/O: Unstable/stabilized normalized LSF vector in Q15 [L] */
+ const SKP_int *NDeltaMin_Q15, /* I: Normalized delta min vector in Q15, NDeltaMin_Q15[L] must be >= 1 [L+1] */
+ const SKP_int L /* I: Number of NLSF parameters in the input vector */
+)
+{
+ SKP_int center_freq_Q15, diff_Q15, min_center_Q15, max_center_Q15;
+ SKP_int32 min_diff_Q15;
+ SKP_int loops;
+ SKP_int i, I=0, k;
+
+ /* This is necessary to ensure an output within range of a SKP_int16 */
+ SKP_assert( NDeltaMin_Q15[L] >= 1 );
+
+ for( loops = 0; loops < MAX_LOOPS; loops++ ) {
+ /**************************/
+ /* Find smallest distance */
+ /**************************/
+ /* First element */
+ min_diff_Q15 = NLSF_Q15[0] - NDeltaMin_Q15[0];
+ I = 0;
+ /* Middle elements */
+ for( i = 1; i <= L-1; i++ ) {
+ diff_Q15 = NLSF_Q15[i] - ( NLSF_Q15[i-1] + NDeltaMin_Q15[i] );
+ if( diff_Q15 < min_diff_Q15 ) {
+ min_diff_Q15 = diff_Q15;
+ I = i;
+ }
+ }
+ /* Last element */
+ diff_Q15 = (1<<15) - ( NLSF_Q15[L-1] + NDeltaMin_Q15[L] );
+ if( diff_Q15 < min_diff_Q15 ) {
+ min_diff_Q15 = diff_Q15;
+ I = L;
+ }
+
+ /***************************************************/
+ /* Now check if the smallest distance non-negative */
+ /***************************************************/
+ if (min_diff_Q15 >= 0) {
+ return;
+ }
+
+ if( I == 0 ) {
+ /* Move away from lower limit */
+ NLSF_Q15[0] = NDeltaMin_Q15[0];
+
+ } else if( I == L) {
+ /* Move away from higher limit */
+ NLSF_Q15[L-1] = (1<<15) - NDeltaMin_Q15[L];
+
+ } else {
+ /* Find the lower extreme for the location of the current center frequency */
+ min_center_Q15 = 0;
+ for( k = 0; k < I; k++ ) {
+ min_center_Q15 += NDeltaMin_Q15[k];
+ }
+ min_center_Q15 += SKP_RSHIFT( NDeltaMin_Q15[I], 1 );
+
+ /* Find the upper extreme for the location of the current center frequency */
+ max_center_Q15 = (1<<15);
+ for( k = L; k > I; k-- ) {
+ max_center_Q15 -= NDeltaMin_Q15[k];
+ }
+ max_center_Q15 -= ( NDeltaMin_Q15[I] - SKP_RSHIFT( NDeltaMin_Q15[I], 1 ) );
+
+ /* Move apart, sorted by value, keeping the same center frequency */
+ center_freq_Q15 = SKP_LIMIT( SKP_RSHIFT_ROUND( (SKP_int32)NLSF_Q15[I-1] + (SKP_int32)NLSF_Q15[I], 1 ),
+ min_center_Q15, max_center_Q15 );
+ NLSF_Q15[I-1] = center_freq_Q15 - SKP_RSHIFT( NDeltaMin_Q15[I], 1 );
+ NLSF_Q15[I] = NLSF_Q15[I-1] + NDeltaMin_Q15[I];
+ }
+ }
+
+ /* Safe and simple fall back method, which is less ideal than the above */
+ if( loops == MAX_LOOPS )
+ {
+ /* Insertion sort (fast for already almost sorted arrays): */
+ /* Best case: O(n) for an already sorted array */
+ /* Worst case: O(n^2) for an inversely sorted array */
+ SKP_Silk_insertion_sort_increasing_all_values(&NLSF_Q15[0], L);
+
+ /* First NLSF should be no less than NDeltaMin[0] */
+ NLSF_Q15[0] = SKP_max_int( NLSF_Q15[0], NDeltaMin_Q15[0] );
+
+ /* Keep delta_min distance between the NLSFs */
+ for( i = 1; i < L; i++ )
+ NLSF_Q15[i] = SKP_max_int( NLSF_Q15[i], NLSF_Q15[i-1] + NDeltaMin_Q15[i] );
+
+ /* Last NLSF should be no higher than 1 - NDeltaMin[L] */
+ NLSF_Q15[L-1] = SKP_min_int( NLSF_Q15[L-1], (1<<15) - NDeltaMin_Q15[L] );
+
+ /* Keep NDeltaMin distance between the NLSFs */
+ for( i = L-2; i >= 0; i-- )
+ NLSF_Q15[i] = SKP_min_int( NLSF_Q15[i], NLSF_Q15[i+1] - NDeltaMin_Q15[i+1] );
+ }
+}
+
+/* NLSF stabilizer, over multiple input column data vectors */
+void SKP_Silk_NLSF_stabilize_multi(
+ SKP_int *NLSF_Q15, /* I/O: Unstable/stabilized normalized LSF vectors in Q15 [LxN] */
+ const SKP_int *NDeltaMin_Q15, /* I: Normalized delta min vector in Q15, NDeltaMin_Q15[L] must be >= 1 [L+1] */
+ const SKP_int N, /* I: Number of input vectors to be stabilized */
+ const SKP_int L /* I: NLSF vector dimension */
+)
+{
+ SKP_int n;
+
+ /* loop over input data */
+ for( n = 0; n < N; n++ ) {
+ SKP_Silk_NLSF_stabilize( &NLSF_Q15[n * L], NDeltaMin_Q15, L );
+ }
+}
--- /dev/null
+++ b/src/SKP_Silk_NSQ.c
@@ -1,0 +1,446 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_main.h"
+
+SKP_INLINE void SKP_Silk_nsq_scale_states(
+ SKP_Silk_nsq_state *NSQ, /* I/O NSQ state */
+ const SKP_int16 x[], /* I input in Q0 */
+ SKP_int32 x_sc_Q10[], /* O input scaled with 1/Gain */
+ SKP_int length, /* I length of input */
+ SKP_int16 sLTP[], /* I re-whitened LTP state in Q0 */
+ SKP_int32 sLTP_Q16[], /* O LTP state matching scaled input */
+ SKP_int subfr, /* I subframe number */
+ const SKP_int LTP_scale_Q14, /* I */
+ const SKP_int32 Gains_Q16[ NB_SUBFR ], /* I */
+ const SKP_int pitchL[ NB_SUBFR ] /* I */
+);
+
+SKP_INLINE void SKP_Silk_noise_shape_quantizer(
+ SKP_Silk_nsq_state *NSQ, /* I/O NSQ state */
+ SKP_int sigtype, /* I Signal type */
+ const SKP_int32 x_sc_Q10[], /* I */
+ SKP_int q[], /* O */
+ SKP_int16 xq[], /* O */
+ SKP_int32 sLTP_Q16[], /* I/O LTP state */
+ const SKP_int16 a_Q12[], /* I Short term prediction coefs */
+ const SKP_int16 b_Q14[], /* I Long term prediction coefs */
+ const SKP_int16 AR_shp_Q13[], /* I Noise shaping AR coefs */
+ SKP_int lag, /* I Pitch lag */
+ SKP_int32 HarmShapeFIRPacked_Q14, /* I */
+ SKP_int Tilt_Q14, /* I Spectral tilt */
+ SKP_int32 LF_shp_Q14, /* I */
+ SKP_int32 Gain_Q16, /* I */
+ SKP_int Lambda_Q10, /* I */
+ SKP_int offset_Q10, /* I */
+ SKP_int length, /* I Input length */
+ SKP_int shapingLPCOrder, /* I Noise shaping AR filter order */
+ SKP_int predictLPCOrder /* I Prediction filter order */
+);
+
+void SKP_Silk_NSQ(
+ SKP_Silk_encoder_state *psEncC, /* I/O Encoder State */
+ SKP_Silk_encoder_control *psEncCtrlC, /* I Encoder Control */
+ SKP_Silk_nsq_state *NSQ, /* I/O NSQ state */
+ const SKP_int16 x[], /* I prefiltered input signal */
+ SKP_int q[], /* O quantized qulse signal */
+ const SKP_int LSFInterpFactor_Q2, /* I LSF interpolation factor in Q2 */
+ const SKP_int16 PredCoef_Q12[ 2 * MAX_LPC_ORDER ], /* I Short term prediction coefficients */
+ const SKP_int16 LTPCoef_Q14[ LTP_ORDER * NB_SUBFR ], /* I Long term prediction coefficients */
+ const SKP_int16 AR2_Q13[ NB_SUBFR * SHAPE_LPC_ORDER_MAX ], /* I */
+ const SKP_int HarmShapeGain_Q14[ NB_SUBFR ], /* I */
+ const SKP_int Tilt_Q14[ NB_SUBFR ], /* I Spectral tilt */
+ const SKP_int32 LF_shp_Q14[ NB_SUBFR ], /* I */
+ const SKP_int32 Gains_Q16[ NB_SUBFR ], /* I */
+ const SKP_int Lambda_Q10, /* I */
+ const SKP_int LTP_scale_Q14 /* I LTP state scaling */
+)
+{
+ SKP_int k, lag, start_idx, subfr_length, LSF_interpolation_flag;
+ const SKP_int16 *A_Q12, *B_Q14, *AR_shp_Q13;
+ SKP_int16 *pxq;
+ SKP_int32 sLTP_Q16[ 2 * MAX_FRAME_LENGTH ];
+ SKP_int16 sLTP[ 2 * MAX_FRAME_LENGTH ];
+ SKP_int32 HarmShapeFIRPacked_Q14;
+ SKP_int offset_Q10;
+ SKP_int32 FiltState[ MAX_LPC_ORDER ];
+ SKP_int32 x_sc_Q10[ MAX_FRAME_LENGTH / NB_SUBFR ];
+
+ subfr_length = psEncC->frame_length / NB_SUBFR;
+
+ NSQ->rand_seed = psEncCtrlC->Seed;
+ /* Set unvoiced lag to the previous one, overwrite later for voiced */
+ lag = NSQ->lagPrev;
+
+ SKP_assert( NSQ->prev_inv_gain_Q16 != 0 );
+
+ offset_Q10 = SKP_Silk_Quantization_Offsets_Q10[ psEncCtrlC->sigtype ][ psEncCtrlC->QuantOffsetType ];
+
+ if( LSFInterpFactor_Q2 == ( 1 << 2 ) ) {
+ LSF_interpolation_flag = 0;
+ } else {
+ LSF_interpolation_flag = 1;
+ }
+
+ /* Setup pointers to start of sub frame */
+ NSQ->sLTP_shp_buf_idx = psEncC->frame_length;
+ NSQ->sLTP_buf_idx = psEncC->frame_length;
+ pxq = &NSQ->xq[ psEncC->frame_length ];
+ for( k = 0; k < NB_SUBFR; k++ ) {
+ A_Q12 = &PredCoef_Q12[ (( k >> 1 ) | ( 1 - LSF_interpolation_flag )) * MAX_LPC_ORDER ];
+ B_Q14 = <PCoef_Q14[ k * LTP_ORDER ];
+ AR_shp_Q13 = &AR2_Q13[ k * SHAPE_LPC_ORDER_MAX ];
+
+ /* Noise shape parameters */
+ SKP_assert( HarmShapeGain_Q14[ k ] >= 0 );
+ HarmShapeFIRPacked_Q14 = SKP_RSHIFT( HarmShapeGain_Q14[ k ], 2 );
+ HarmShapeFIRPacked_Q14 |= SKP_LSHIFT( ( SKP_int32 )SKP_RSHIFT( HarmShapeGain_Q14[ k ], 1 ), 16 );
+
+ if( psEncCtrlC->sigtype == SIG_TYPE_VOICED ) {
+ /* Voiced */
+ lag = psEncCtrlC->pitchL[ k ];
+
+ NSQ->rewhite_flag = 0;
+ /* Re-whitening */
+ if( ( k & ( 3 - SKP_LSHIFT( LSF_interpolation_flag, 1 ) ) ) == 0 ) {
+ /* Rewhiten with new A coefs */
+
+ start_idx = psEncC->frame_length - lag - psEncC->predictLPCOrder - LTP_ORDER / 2;
+ start_idx = SKP_LIMIT( start_idx, 0, psEncC->frame_length - psEncC->predictLPCOrder ); /* Limit */
+
+ SKP_memset( FiltState, 0, psEncC->predictLPCOrder * sizeof( SKP_int32 ) );
+ SKP_Silk_MA_Prediction( &NSQ->xq[ start_idx + k * ( psEncC->frame_length >> 2 ) ],
+ A_Q12, FiltState, sLTP + start_idx, psEncC->frame_length - start_idx, psEncC->predictLPCOrder );
+
+ NSQ->rewhite_flag = 1;
+ NSQ->sLTP_buf_idx = psEncC->frame_length;
+ }
+ }
+
+ SKP_Silk_nsq_scale_states( NSQ, x, x_sc_Q10, psEncC->subfr_length, sLTP,
+ sLTP_Q16, k, LTP_scale_Q14, Gains_Q16, psEncCtrlC->pitchL );
+
+ SKP_Silk_noise_shape_quantizer( NSQ, psEncCtrlC->sigtype, x_sc_Q10, q, pxq, sLTP_Q16, A_Q12, B_Q14,
+ AR_shp_Q13, lag, HarmShapeFIRPacked_Q14, Tilt_Q14[ k ], LF_shp_Q14[ k ], Gains_Q16[ k ], Lambda_Q10,
+ offset_Q10, psEncC->subfr_length, psEncC->shapingLPCOrder, psEncC->predictLPCOrder
+ );
+
+ x += psEncC->subfr_length;
+ q += psEncC->subfr_length;
+ pxq += psEncC->subfr_length;
+ }
+
+ /* Save scalars for this layer */
+ NSQ->sLF_AR_shp_Q12 = NSQ->sLF_AR_shp_Q12;
+ NSQ->prev_inv_gain_Q16 = NSQ->prev_inv_gain_Q16;
+ NSQ->lagPrev = psEncCtrlC->pitchL[ NB_SUBFR - 1 ];
+ /* Save quantized speech and noise shaping signals */
+ SKP_memcpy( NSQ->xq, &NSQ->xq[ psEncC->frame_length ], psEncC->frame_length * sizeof( SKP_int16 ) );
+ SKP_memcpy( NSQ->sLTP_shp_Q10, &NSQ->sLTP_shp_Q10[ psEncC->frame_length ], psEncC->frame_length * sizeof( SKP_int32 ) );
+
+}
+
+/***********************************/
+/* SKP_Silk_noise_shape_quantizer */
+/***********************************/
+SKP_INLINE void SKP_Silk_noise_shape_quantizer(
+ SKP_Silk_nsq_state *NSQ, /* I/O NSQ state */
+ SKP_int sigtype, /* I Signal type */
+ const SKP_int32 x_sc_Q10[], /* I */
+ SKP_int q[], /* O */
+ SKP_int16 xq[], /* O */
+ SKP_int32 sLTP_Q16[], /* I/O LTP state */
+ const SKP_int16 a_Q12[], /* I Short term prediction coefs */
+ const SKP_int16 b_Q14[], /* I Long term prediction coefs */
+ const SKP_int16 AR_shp_Q13[], /* I Noise shaping AR coefs */
+ SKP_int lag, /* I Pitch lag */
+ SKP_int32 HarmShapeFIRPacked_Q14, /* I */
+ SKP_int Tilt_Q14, /* I Spectral tilt */
+ SKP_int32 LF_shp_Q14, /* I */
+ SKP_int32 Gain_Q16, /* I */
+ SKP_int Lambda_Q10, /* I */
+ SKP_int offset_Q10, /* I */
+ SKP_int length, /* I Input length */
+ SKP_int shapingLPCOrder, /* I Noise shaping AR filter order */
+ SKP_int predictLPCOrder /* I Prediction filter order */
+)
+{
+ SKP_int i, j;
+ SKP_int32 LTP_pred_Q14, LPC_pred_Q10, n_AR_Q10, n_LTP_Q14;
+ SKP_int32 n_LF_Q10, r_Q10, q_Q0, q_Q10;
+ SKP_int32 thr1_Q10, thr2_Q10, thr3_Q10;
+ SKP_int32 Atmp, dither;
+ SKP_int32 exc_Q10, LPC_exc_Q10, xq_Q10;
+ SKP_int32 tmp, sLF_AR_shp_Q10;
+ SKP_int32 *psLPC_Q14;
+ SKP_int32 *shp_lag_ptr, *pred_lag_ptr;
+ SKP_int32 a_Q12_tmp[ MAX_LPC_ORDER / 2 ], AR_shp_Q13_tmp[ MAX_LPC_ORDER / 2 ];
+
+ shp_lag_ptr = &NSQ->sLTP_shp_Q10[ NSQ->sLTP_shp_buf_idx - lag + HARM_SHAPE_FIR_TAPS / 2 ];
+ pred_lag_ptr = &sLTP_Q16[ NSQ->sLTP_buf_idx - lag + LTP_ORDER / 2 ];
+
+ /* Setup short term AR state */
+ psLPC_Q14 = &NSQ->sLPC_Q14[ MAX_LPC_ORDER - 1 ];
+
+ /* Quantization thresholds */
+ thr1_Q10 = SKP_SUB_RSHIFT32( -1536, Lambda_Q10, 1);
+ thr2_Q10 = SKP_SUB_RSHIFT32( -512, Lambda_Q10, 1);
+ thr2_Q10 = SKP_ADD_RSHIFT32( thr2_Q10, SKP_SMULBB( offset_Q10, Lambda_Q10 ), 10 );
+ thr3_Q10 = SKP_ADD_RSHIFT32( 512, Lambda_Q10, 1);
+
+ /* Preload LPC coeficients to array on stack. Gives small performance gain */
+ SKP_memcpy( a_Q12_tmp, a_Q12, predictLPCOrder * sizeof( SKP_int16 ) );
+ SKP_memcpy( AR_shp_Q13_tmp, AR_shp_Q13, shapingLPCOrder * sizeof( SKP_int16 ) );
+
+ for( i = 0; i < length; i++ ) {
+ /* Generate dither */
+ NSQ->rand_seed = SKP_RAND( NSQ->rand_seed );
+
+ /* dither = rand_seed < 0 ? 0xFFFFFFFF : 0; */
+ dither = SKP_RSHIFT( NSQ->rand_seed, 31 );
+
+ /* Short-term prediction */
+ SKP_assert( ( predictLPCOrder & 1 ) == 0 ); /* check that order is even */
+ SKP_assert( ( (SKP_int64)a_Q12 & 3 ) == 0 ); /* check that array starts at 4-byte aligned address */
+ SKP_assert( predictLPCOrder >= 10 ); /* check that unrolling works */
+
+ /* NOTE: the code below loads two int16 values in an int32, and multiplies each using the */
+ /* SMLAWB and SMLAWT instructions. On a big-endian CPU the two int16 variables would be */
+ /* loaded in reverse order and the code will give the wrong result. In that case swapping */
+ /* the SMLAWB and SMLAWT instructions should solve the problem. */
+ /* Partially unrolled */
+ Atmp = a_Q12_tmp[ 0 ]; /* read two coefficients at once */
+ LPC_pred_Q10 = SKP_SMULWB( psLPC_Q14[ 0 ], Atmp );
+ LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psLPC_Q14[ -1 ], Atmp );
+ Atmp = a_Q12_tmp[ 1 ];
+ LPC_pred_Q10 = SKP_SMLAWB( LPC_pred_Q10, psLPC_Q14[ -2 ], Atmp );
+ LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psLPC_Q14[ -3 ], Atmp );
+ Atmp = a_Q12_tmp[ 2 ];
+ LPC_pred_Q10 = SKP_SMLAWB( LPC_pred_Q10, psLPC_Q14[ -4 ], Atmp );
+ LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psLPC_Q14[ -5 ], Atmp );
+ Atmp = a_Q12_tmp[ 3 ];
+ LPC_pred_Q10 = SKP_SMLAWB( LPC_pred_Q10, psLPC_Q14[ -6 ], Atmp );
+ LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psLPC_Q14[ -7 ], Atmp );
+ Atmp = a_Q12_tmp[ 4 ];
+ LPC_pred_Q10 = SKP_SMLAWB( LPC_pred_Q10, psLPC_Q14[ -8 ], Atmp );
+ LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psLPC_Q14[ -9 ], Atmp );
+ for( j = 10; j < predictLPCOrder; j += 2 ) {
+ Atmp = a_Q12_tmp[ j >> 1 ]; /* read two coefficients at once */
+ LPC_pred_Q10 = SKP_SMLAWB( LPC_pred_Q10, psLPC_Q14[ -j ], Atmp );
+ LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psLPC_Q14[ -j - 1 ], Atmp );
+ }
+
+ /* Long-term prediction */
+ if( sigtype == SIG_TYPE_VOICED ) {
+ /* Unrolled loop */
+ LTP_pred_Q14 = SKP_SMULWB( pred_lag_ptr[ 0 ], b_Q14[ 0 ] );
+ LTP_pred_Q14 = SKP_SMLAWB( LTP_pred_Q14, pred_lag_ptr[ -1 ], b_Q14[ 1 ] );
+ LTP_pred_Q14 = SKP_SMLAWB( LTP_pred_Q14, pred_lag_ptr[ -2 ], b_Q14[ 2 ] );
+ LTP_pred_Q14 = SKP_SMLAWB( LTP_pred_Q14, pred_lag_ptr[ -3 ], b_Q14[ 3 ] );
+ LTP_pred_Q14 = SKP_SMLAWB( LTP_pred_Q14, pred_lag_ptr[ -4 ], b_Q14[ 4 ] );
+ pred_lag_ptr++;
+ } else {
+ LTP_pred_Q14 = 0;
+ }
+
+ /* Noise shape feedback */
+ SKP_assert( ( shapingLPCOrder & 1 ) == 0 ); /* check that order is even */
+ SKP_assert( ( (SKP_int64)AR_shp_Q13 & 3 ) == 0 ); /* check that array starts at 4-byte aligned address */
+ SKP_assert( shapingLPCOrder >= 12 ); /* check that unrolling works */
+
+ /* Partially unrolled */
+ Atmp = AR_shp_Q13_tmp[ 0 ]; /* read two coefficients at once */
+ n_AR_Q10 = SKP_SMULWB( psLPC_Q14[ 0 ], Atmp );
+ n_AR_Q10 = SKP_SMLAWT( n_AR_Q10, psLPC_Q14[ -1 ], Atmp );
+ Atmp = AR_shp_Q13_tmp[ 1 ];
+ n_AR_Q10 = SKP_SMLAWB( n_AR_Q10, psLPC_Q14[ -2 ], Atmp );
+ n_AR_Q10 = SKP_SMLAWT( n_AR_Q10, psLPC_Q14[ -3 ], Atmp );
+ Atmp = AR_shp_Q13_tmp[ 2 ];
+ n_AR_Q10 = SKP_SMLAWB( n_AR_Q10, psLPC_Q14[ -4 ], Atmp );
+ n_AR_Q10 = SKP_SMLAWT( n_AR_Q10, psLPC_Q14[ -5 ], Atmp );
+ Atmp = AR_shp_Q13_tmp[ 3 ];
+ n_AR_Q10 = SKP_SMLAWB( n_AR_Q10, psLPC_Q14[ -6 ], Atmp );
+ n_AR_Q10 = SKP_SMLAWT( n_AR_Q10, psLPC_Q14[ -7 ], Atmp );
+ Atmp = AR_shp_Q13_tmp[ 4 ];
+ n_AR_Q10 = SKP_SMLAWB( n_AR_Q10, psLPC_Q14[ -8 ], Atmp );
+ n_AR_Q10 = SKP_SMLAWT( n_AR_Q10, psLPC_Q14[ -9 ], Atmp );
+ Atmp = AR_shp_Q13_tmp[ 5 ];
+ n_AR_Q10 = SKP_SMLAWB( n_AR_Q10, psLPC_Q14[ -10 ], Atmp );
+ n_AR_Q10 = SKP_SMLAWT( n_AR_Q10, psLPC_Q14[ -11 ], Atmp );
+ for( j = 12; j < shapingLPCOrder; j += 2 ) {
+ Atmp = AR_shp_Q13_tmp[ j >> 1 ]; /* read two coefficients at once */
+ n_AR_Q10 = SKP_SMLAWB( n_AR_Q10, psLPC_Q14[ -j ], Atmp );
+ n_AR_Q10 = SKP_SMLAWT( n_AR_Q10, psLPC_Q14[ -j - 1 ], Atmp );
+ }
+ n_AR_Q10 = SKP_RSHIFT( n_AR_Q10, 1 ); /* Q11 -> Q10 */
+ n_AR_Q10 = SKP_SMLAWB( n_AR_Q10, NSQ->sLF_AR_shp_Q12, Tilt_Q14 );
+
+ n_LF_Q10 = SKP_LSHIFT( SKP_SMULWB( NSQ->sLTP_shp_Q10[ NSQ->sLTP_shp_buf_idx - 1 ], LF_shp_Q14 ), 2 );
+ n_LF_Q10 = SKP_SMLAWT( n_LF_Q10, NSQ->sLF_AR_shp_Q12, LF_shp_Q14 );
+
+ SKP_assert( lag > 0 || sigtype == SIG_TYPE_UNVOICED);
+
+ /* Long-term shaping */
+ if( lag > 0 ) {
+ /* Symmetric, packed FIR coefficients */
+ n_LTP_Q14 = SKP_SMULWB( SKP_ADD32( shp_lag_ptr[ 0 ], shp_lag_ptr[ -2 ] ), HarmShapeFIRPacked_Q14 );
+ n_LTP_Q14 = SKP_SMLAWT( n_LTP_Q14, shp_lag_ptr[ -1 ], HarmShapeFIRPacked_Q14 );
+ shp_lag_ptr++;
+ n_LTP_Q14 = SKP_LSHIFT( n_LTP_Q14, 6 );
+ } else {
+ n_LTP_Q14 = 0;
+ }
+
+ /* Input minus prediction plus noise feedback */
+ //r = x[ i ] - LTP_pred - LPC_pred + n_AR + n_Tilt + n_LF + n_LTP;
+ tmp = SKP_SUB32( LTP_pred_Q14, n_LTP_Q14 ); /* Add Q14 stuff */
+ tmp = SKP_RSHIFT_ROUND( tmp, 4 ); /* round to Q10 */
+ tmp = SKP_ADD32( tmp, LPC_pred_Q10 ); /* add Q10 stuff */
+ tmp = SKP_SUB32( tmp, n_AR_Q10 ); /* subtract Q10 stuff */
+ tmp = SKP_SUB32( tmp, n_LF_Q10 ); /* subtract Q10 stuff */
+ r_Q10 = SKP_SUB32( x_sc_Q10[ i ], tmp );
+
+
+ /* Flip sign depending on dither */
+ r_Q10 = ( r_Q10 ^ dither ) - dither;
+ r_Q10 = SKP_SUB32( r_Q10, offset_Q10 );
+ r_Q10 = SKP_LIMIT( r_Q10, -64 << 10, 64 << 10 );
+
+ /* Quantize */
+ if( r_Q10 < thr1_Q10 ) {
+ q_Q0 = SKP_RSHIFT_ROUND( SKP_ADD_RSHIFT32( r_Q10, Lambda_Q10, 1 ), 10 );
+ q_Q10 = SKP_LSHIFT( q_Q0, 10 );
+ } else if( r_Q10 < thr2_Q10 ) {
+ q_Q0 = -1;
+ q_Q10 = -1024;
+ } else if( r_Q10 > thr3_Q10 ) {
+ q_Q0 = SKP_RSHIFT_ROUND( SKP_SUB_RSHIFT32( r_Q10, Lambda_Q10, 1 ), 10 );
+ q_Q10 = SKP_LSHIFT( q_Q0, 10 );
+ } else {
+ q_Q0 = 0;
+ q_Q10 = 0;
+ }
+ q[ i ] = q_Q0;
+
+ /* Excitation */
+ exc_Q10 = SKP_ADD32( q_Q10, offset_Q10 );
+ exc_Q10 = ( exc_Q10 ^ dither ) - dither;
+
+ /* Add predictions */
+ LPC_exc_Q10 = SKP_ADD32( exc_Q10, SKP_RSHIFT_ROUND( LTP_pred_Q14, 4 ) );
+ xq_Q10 = SKP_ADD32( LPC_exc_Q10, LPC_pred_Q10 );
+
+ /* Scale XQ back to normal level before saving */
+ xq[ i ] = ( SKP_int16 )SKP_SAT16( SKP_RSHIFT_ROUND( SKP_SMULWW( xq_Q10, Gain_Q16 ), 10 ) );
+
+
+ /* Update states */
+ psLPC_Q14++;
+ *psLPC_Q14 = SKP_LSHIFT( xq_Q10, 4 );
+ sLF_AR_shp_Q10 = SKP_SUB32( xq_Q10, n_AR_Q10 );
+ NSQ->sLF_AR_shp_Q12 = SKP_LSHIFT( sLF_AR_shp_Q10, 2 );
+
+ NSQ->sLTP_shp_Q10[ NSQ->sLTP_shp_buf_idx ] = SKP_SUB32( sLF_AR_shp_Q10, n_LF_Q10 );
+ sLTP_Q16[NSQ->sLTP_buf_idx] = SKP_LSHIFT( LPC_exc_Q10, 6 );
+ NSQ->sLTP_shp_buf_idx++;
+ NSQ->sLTP_buf_idx++;
+
+ /* Make dither dependent on quantized signal */
+ NSQ->rand_seed += q[ i ];
+ }
+ /* Update LPC synth buffer */
+ SKP_memcpy( NSQ->sLPC_Q14, &NSQ->sLPC_Q14[ length ], MAX_LPC_ORDER * sizeof( SKP_int32 ) );
+}
+
+SKP_INLINE void SKP_Silk_nsq_scale_states(
+ SKP_Silk_nsq_state *NSQ, /* I/O NSQ state */
+ const SKP_int16 x[], /* I input in Q0 */
+ SKP_int32 x_sc_Q10[], /* O input scaled with 1/Gain */
+ SKP_int length, /* I length of input */
+ SKP_int16 sLTP[], /* I re-whitened LTP state in Q0 */
+ SKP_int32 sLTP_Q16[], /* O LTP state matching scaled input */
+ SKP_int subfr, /* I subframe number */
+ const SKP_int LTP_scale_Q14, /* I */
+ const SKP_int32 Gains_Q16[ NB_SUBFR ], /* I */
+ const SKP_int pitchL[ NB_SUBFR ] /* I */
+)
+{
+ SKP_int i, scale_length, lag;
+ SKP_int32 inv_gain_Q16, gain_adj_Q16, inv_gain_Q32;
+
+ inv_gain_Q16 = SKP_DIV32( SKP_int32_MAX, SKP_RSHIFT( Gains_Q16[ subfr ], 1) );
+ inv_gain_Q16 = SKP_min( inv_gain_Q16, SKP_int16_MAX );
+ lag = pitchL[ subfr ];
+
+ /* After rewhitening the LTP state is un-scaled */
+ if( NSQ->rewhite_flag ) {
+ inv_gain_Q32 = SKP_LSHIFT( inv_gain_Q16, 16 );
+ if( subfr == 0 ) {
+ /* Do LTP downscaling */
+ inv_gain_Q32 = SKP_LSHIFT( SKP_SMULWB( inv_gain_Q32, LTP_scale_Q14 ), 2 );
+ }
+ for( i = NSQ->sLTP_buf_idx - lag - LTP_ORDER / 2; i < NSQ->sLTP_buf_idx; i++ ) {
+ sLTP_Q16[ i ] = SKP_SMULWB( inv_gain_Q32, sLTP[ i ] );
+ }
+ }
+
+ /* Prepare for Worst case. Next frame starts with max lag voiced */
+ scale_length = length * NB_SUBFR; /* approx max lag */
+ scale_length = scale_length - SKP_SMULBB( NB_SUBFR - (subfr + 1), length ); /* subtract samples that will be too old in next frame */
+ scale_length = SKP_max_int( scale_length, lag + LTP_ORDER ); /* make sure to scale whole pitch period if voiced */
+
+ /* Adjust for changing gain */
+ if( inv_gain_Q16 != NSQ->prev_inv_gain_Q16 ) {
+ gain_adj_Q16 = SKP_DIV32_varQ( inv_gain_Q16, NSQ->prev_inv_gain_Q16, 16 );
+
+ for( i = NSQ->sLTP_shp_buf_idx - scale_length; i < NSQ->sLTP_shp_buf_idx; i++ ) {
+ NSQ->sLTP_shp_Q10[ i ] = SKP_SMULWW( gain_adj_Q16, NSQ->sLTP_shp_Q10[ i ] );
+ }
+
+ /* Scale LTP predict state */
+ if( NSQ->rewhite_flag == 0 ) {
+ for( i = NSQ->sLTP_buf_idx - lag - LTP_ORDER / 2; i < NSQ->sLTP_buf_idx; i++ ) {
+ sLTP_Q16[ i ] = SKP_SMULWW( gain_adj_Q16, sLTP_Q16[ i ] );
+ }
+ }
+ NSQ->sLF_AR_shp_Q12 = SKP_SMULWW( gain_adj_Q16, NSQ->sLF_AR_shp_Q12 );
+
+ /* scale short term state */
+ for( i = 0; i < MAX_LPC_ORDER; i++ ) {
+ NSQ->sLPC_Q14[ i ] = SKP_SMULWW( gain_adj_Q16, NSQ->sLPC_Q14[ i ] );
+ }
+ }
+
+ /* Scale input */
+ for( i = 0; i < length; i++ ) {
+ x_sc_Q10[ i ] = SKP_RSHIFT( SKP_SMULBB( x[ i ], ( SKP_int16 )inv_gain_Q16 ), 6 );
+ }
+
+ /* save inv_gain */
+ SKP_assert( inv_gain_Q16 != 0 );
+ NSQ->prev_inv_gain_Q16 = inv_gain_Q16;
+}
--- /dev/null
+++ b/src/SKP_Silk_NSQ_del_dec.c
@@ -1,0 +1,722 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_main.h"
+
+typedef struct {
+ SKP_int RandState[ DECISION_DELAY ];
+ SKP_int32 Q_Q10[ DECISION_DELAY ];
+ SKP_int32 Xq_Q10[ DECISION_DELAY ];
+ SKP_int32 Pred_Q16[ DECISION_DELAY ];
+ SKP_int32 Shape_Q10[ DECISION_DELAY ];
+ SKP_int32 Gain_Q16[ DECISION_DELAY ];
+ SKP_int32 sLPC_Q14[ MAX_FRAME_LENGTH / NB_SUBFR + NSQ_LPC_BUF_LENGTH ];
+ SKP_int32 LF_AR_Q12;
+ SKP_int32 Seed;
+ SKP_int32 SeedInit;
+ SKP_int32 RD_Q10;
+} NSQ_del_dec_struct;
+
+typedef struct {
+ SKP_int32 Q_Q10;
+ SKP_int32 RD_Q10;
+ SKP_int32 xq_Q14;
+ SKP_int32 LF_AR_Q12;
+ SKP_int32 sLTP_shp_Q10;
+ SKP_int32 LPC_exc_Q16;
+} NSQ_sample_struct;
+
+SKP_INLINE void SKP_Silk_copy_del_dec_state(
+ NSQ_del_dec_struct *DD_dst, /* I Dst del dec state */
+ NSQ_del_dec_struct *DD_src, /* I Src del dec state */
+ SKP_int LPC_state_idx /* I Index to LPC buffer */
+);
+
+SKP_INLINE void SKP_Silk_nsq_del_dec_scale_states(
+ SKP_Silk_nsq_state *NSQ, /* I/O NSQ state */
+ NSQ_del_dec_struct psDelDec[], /* I/O Delayed decision states */
+ const SKP_int16 x[], /* I Input in Q0 */
+ SKP_int32 x_sc_Q10[], /* O Input scaled with 1/Gain in Q10 */
+ SKP_int length, /* I Length of input */
+ SKP_int16 sLTP[], /* I Re-whitened LTP state in Q0 */
+ SKP_int32 sLTP_Q16[], /* O LTP state matching scaled input */
+ SKP_int subfr, /* I Subframe number */
+ SKP_int nStatesDelayedDecision, /* I Number of del dec states */
+ SKP_int smpl_buf_idx, /* I Index to newest samples in buffers */
+ const SKP_int LTP_scale_Q14, /* I LTP state scaling */
+ const SKP_int32 Gains_Q16[ NB_SUBFR ], /* I */
+ const SKP_int pitchL[ NB_SUBFR ] /* I Pitch lag */
+);
+
+/******************************************/
+/* Noise shape quantizer for one subframe */
+/******************************************/
+SKP_INLINE void SKP_Silk_noise_shape_quantizer_del_dec(
+ SKP_Silk_nsq_state *NSQ, /* I/O NSQ state */
+ NSQ_del_dec_struct psDelDec[], /* I/O Delayed decision states */
+ SKP_int sigtype, /* I Signal type */
+ const SKP_int32 x_Q10[], /* I */
+ SKP_int q[], /* O */
+ SKP_int16 xq[], /* O */
+ SKP_int32 sLTP_Q16[], /* I/O LTP filter state */
+ const SKP_int16 a_Q12[], /* I Short term prediction coefs */
+ const SKP_int16 b_Q14[], /* I Long term prediction coefs */
+ const SKP_int16 AR_shp_Q13[], /* I Noise shaping coefs */
+ SKP_int lag, /* I Pitch lag */
+ SKP_int32 HarmShapeFIRPacked_Q14, /* I */
+ SKP_int Tilt_Q14, /* I Spectral tilt */
+ SKP_int32 LF_shp_Q14, /* I */
+ SKP_int32 Gain_Q16, /* I */
+ SKP_int Lambda_Q10, /* I */
+ SKP_int offset_Q10, /* I */
+ SKP_int length, /* I Input length */
+ SKP_int subfr, /* I Subframe number */
+ SKP_int shapingLPCOrder, /* I Shaping LPC filter order */
+ SKP_int predictLPCOrder, /* I Prediction LPC filter order */
+ SKP_int nStatesDelayedDecision, /* I Number of states in decision tree */
+ SKP_int *smpl_buf_idx, /* I Index to newest samples in buffers */
+ SKP_int decisionDelay /* I */
+);
+
+void SKP_Silk_NSQ_del_dec(
+ SKP_Silk_encoder_state *psEncC, /* I/O Encoder State */
+ SKP_Silk_encoder_control *psEncCtrlC, /* I Encoder Control */
+ SKP_Silk_nsq_state *NSQ, /* I/O NSQ state */
+ const SKP_int16 x[], /* I Prefiltered input signal */
+ SKP_int q[], /* O Quantized pulse signal */
+ const SKP_int LSFInterpFactor_Q2, /* I LSF interpolation factor in Q2 */
+ const SKP_int16 PredCoef_Q12[ 2 * MAX_LPC_ORDER ], /* I Prediction coefs */
+ const SKP_int16 LTPCoef_Q14[ LTP_ORDER * NB_SUBFR ], /* I LT prediction coefs */
+ const SKP_int16 AR2_Q13[ NB_SUBFR * SHAPE_LPC_ORDER_MAX ], /* I */
+ const SKP_int HarmShapeGain_Q14[ NB_SUBFR ], /* I */
+ const SKP_int Tilt_Q14[ NB_SUBFR ], /* I Spectral tilt */
+ const SKP_int32 LF_shp_Q14[ NB_SUBFR ], /* I */
+ const SKP_int32 Gains_Q16[ NB_SUBFR ], /* I */
+ const SKP_int Lambda_Q10, /* I */
+ const SKP_int LTP_scale_Q14 /* I LTP state scaling */
+)
+{
+ SKP_int i, k, lag, start_idx, LSF_interpolation_flag, Winner_ind, subfr;
+ SKP_int last_smple_idx, smpl_buf_idx, decisionDelay, subfr_length;
+ const SKP_int16 *A_Q12, *B_Q14, *AR_shp_Q13;
+ SKP_int16 *pxq;
+ SKP_int32 sLTP_Q16[ 2 * MAX_FRAME_LENGTH ];
+ SKP_int16 sLTP[ 2 * MAX_FRAME_LENGTH ];
+ SKP_int32 HarmShapeFIRPacked_Q14;
+ SKP_int offset_Q10;
+ SKP_int32 FiltState[ MAX_LPC_ORDER ], RDmin_Q10;
+ SKP_int32 x_sc_Q10[ MAX_FRAME_LENGTH / NB_SUBFR ];
+ NSQ_del_dec_struct psDelDec[ DEL_DEC_STATES_MAX ];
+ NSQ_del_dec_struct *psDD;
+
+ subfr_length = psEncC->frame_length / NB_SUBFR;
+
+ /* Set unvoiced lag to the previous one, overwrite later for voiced */
+ lag = NSQ->lagPrev;
+
+ SKP_assert( NSQ->prev_inv_gain_Q16 != 0 );
+
+ /* Initialize delayed decision states */
+ SKP_memset( psDelDec, 0, psEncC->nStatesDelayedDecision * sizeof( NSQ_del_dec_struct ) );
+ for( k = 0; k < psEncC->nStatesDelayedDecision; k++ ) {
+ psDD = &psDelDec[ k ];
+ psDD->Seed = ( k + psEncCtrlC->Seed ) & 3;
+ psDD->SeedInit = psDD->Seed;
+ psDD->RD_Q10 = 0;
+ psDD->LF_AR_Q12 = NSQ->sLF_AR_shp_Q12;
+ psDD->Shape_Q10[ 0 ] = NSQ->sLTP_shp_Q10[ psEncC->frame_length - 1 ];
+ SKP_memcpy( psDD->sLPC_Q14, NSQ->sLPC_Q14, NSQ_LPC_BUF_LENGTH * sizeof( SKP_int32 ) );
+ }
+
+ offset_Q10 = SKP_Silk_Quantization_Offsets_Q10[ psEncCtrlC->sigtype ][ psEncCtrlC->QuantOffsetType ];
+ smpl_buf_idx = 0; /* index of oldest samples */
+
+ decisionDelay = SKP_min_int( DECISION_DELAY, subfr_length );
+ /* For voiced frames limit the decision delay to lower than the pitch lag */
+ if( psEncCtrlC->sigtype == SIG_TYPE_VOICED ) {
+ for( k = 0; k < NB_SUBFR; k++ ) {
+ decisionDelay = SKP_min_int( decisionDelay, psEncCtrlC->pitchL[ k ] - LTP_ORDER / 2 - 1 );
+ }
+ }
+
+ if( LSFInterpFactor_Q2 == ( 1 << 2 ) ) {
+ LSF_interpolation_flag = 0;
+ } else {
+ LSF_interpolation_flag = 1;
+ }
+
+ /* Setup pointers to start of sub frame */
+ pxq = &NSQ->xq[ psEncC->frame_length ];
+ NSQ->sLTP_shp_buf_idx = psEncC->frame_length;
+ NSQ->sLTP_buf_idx = psEncC->frame_length;
+ subfr = 0;
+ for( k = 0; k < NB_SUBFR; k++ ) {
+ A_Q12 = &PredCoef_Q12[ ( ( k >> 1 ) | ( 1 - LSF_interpolation_flag ) ) * MAX_LPC_ORDER ];
+ B_Q14 = <PCoef_Q14[ k * LTP_ORDER ];
+ AR_shp_Q13 = &AR2_Q13[ k * SHAPE_LPC_ORDER_MAX ];
+
+ NSQ->rewhite_flag = 0;
+ if( psEncCtrlC->sigtype == SIG_TYPE_VOICED ) {
+ /* Voiced */
+ lag = psEncCtrlC->pitchL[ k ];
+
+ /* Re-whitening */
+ if( ( k & ( 3 - SKP_LSHIFT( LSF_interpolation_flag, 1 ) ) ) == 0 ) {
+ if( k == 2 ) {
+ /* RESET DELAYED DECISIONS */
+ /* Find winner */
+ RDmin_Q10 = psDelDec[ 0 ].RD_Q10;
+ Winner_ind = 0;
+ for( i = 1; i < psEncC->nStatesDelayedDecision; i++ ) {
+ if( psDelDec[ i ].RD_Q10 < RDmin_Q10 ) {
+ RDmin_Q10 = psDelDec[ i ].RD_Q10;
+ Winner_ind = i;
+ }
+ }
+ for( i = 0; i < psEncC->nStatesDelayedDecision; i++ ) {
+ if( i != Winner_ind ) {
+ psDelDec[ i ].RD_Q10 += ( SKP_int32_MAX >> 4 );
+ SKP_assert( psDelDec[ i ].RD_Q10 >= 0 );
+ }
+ }
+
+ /* Copy final part of signals from winner state to output and long-term filter states */
+ psDD = &psDelDec[ Winner_ind ];
+ last_smple_idx = smpl_buf_idx + decisionDelay;
+ for( i = 0; i < decisionDelay; i++ ) {
+ last_smple_idx = ( last_smple_idx - 1 ) & DECISION_DELAY_MASK;
+ q[ i - decisionDelay ] = ( SKP_int )SKP_RSHIFT( psDD->Q_Q10[ last_smple_idx ], 10 );
+ pxq[ i - decisionDelay ] = ( SKP_int16 )SKP_SAT16( SKP_RSHIFT_ROUND(
+ SKP_SMULWW( psDD->Xq_Q10[ last_smple_idx ],
+ psDD->Gain_Q16[ last_smple_idx ] ), 10 ) );
+ NSQ->sLTP_shp_Q10[ NSQ->sLTP_shp_buf_idx - decisionDelay + i ] = psDD->Shape_Q10[ last_smple_idx ];
+ }
+
+ subfr = 0;
+ }
+
+ /* Rewhiten with new A coefs */
+ start_idx = psEncC->frame_length - lag - psEncC->predictLPCOrder - LTP_ORDER / 2;
+ start_idx = SKP_LIMIT( start_idx, 0, psEncC->frame_length - psEncC->predictLPCOrder );
+
+ SKP_memset( FiltState, 0, psEncC->predictLPCOrder * sizeof( SKP_int32 ) );
+ SKP_Silk_MA_Prediction( &NSQ->xq[ start_idx + k * psEncC->subfr_length ],
+ A_Q12, FiltState, sLTP + start_idx, psEncC->frame_length - start_idx, psEncC->predictLPCOrder );
+
+ NSQ->sLTP_buf_idx = psEncC->frame_length;
+ NSQ->rewhite_flag = 1;
+ }
+ }
+
+ /* Noise shape parameters */
+ SKP_assert( HarmShapeGain_Q14[ k ] >= 0 );
+ HarmShapeFIRPacked_Q14 = SKP_RSHIFT( HarmShapeGain_Q14[ k ], 2 );
+ HarmShapeFIRPacked_Q14 |= SKP_LSHIFT( ( SKP_int32 )SKP_RSHIFT( HarmShapeGain_Q14[ k ], 1 ), 16 );
+
+ SKP_Silk_nsq_del_dec_scale_states( NSQ, psDelDec, x, x_sc_Q10,
+ subfr_length, sLTP, sLTP_Q16, k, psEncC->nStatesDelayedDecision, smpl_buf_idx,
+ LTP_scale_Q14, Gains_Q16, psEncCtrlC->pitchL );
+
+ SKP_Silk_noise_shape_quantizer_del_dec( NSQ, psDelDec, psEncCtrlC->sigtype, x_sc_Q10, q, pxq, sLTP_Q16,
+ A_Q12, B_Q14, AR_shp_Q13, lag, HarmShapeFIRPacked_Q14, Tilt_Q14[ k ], LF_shp_Q14[ k ], Gains_Q16[ k ],
+ Lambda_Q10, offset_Q10, psEncC->subfr_length, subfr++, psEncC->shapingLPCOrder, psEncC->predictLPCOrder,
+ psEncC->nStatesDelayedDecision, &smpl_buf_idx, decisionDelay
+ );
+
+ x += psEncC->subfr_length;
+ q += psEncC->subfr_length;
+ pxq += psEncC->subfr_length;
+ }
+
+ /* Find winner */
+ RDmin_Q10 = psDelDec[ 0 ].RD_Q10;
+ Winner_ind = 0;
+ for( k = 1; k < psEncC->nStatesDelayedDecision; k++ ) {
+ if( psDelDec[ k ].RD_Q10 < RDmin_Q10 ) {
+ RDmin_Q10 = psDelDec[ k ].RD_Q10;
+ Winner_ind = k;
+ }
+ }
+
+ /* Copy final part of signals from winner state to output and long-term filter states */
+ psDD = &psDelDec[ Winner_ind ];
+ psEncCtrlC->Seed = psDD->SeedInit;
+ last_smple_idx = smpl_buf_idx + decisionDelay;
+ for( i = 0; i < decisionDelay; i++ ) {
+ last_smple_idx = ( last_smple_idx - 1 ) & DECISION_DELAY_MASK;
+ q[ i - decisionDelay ] = ( SKP_int )SKP_RSHIFT( psDD->Q_Q10[ last_smple_idx ], 10 );
+ pxq[ i - decisionDelay ] = ( SKP_int16 )SKP_SAT16( SKP_RSHIFT_ROUND(
+ SKP_SMULWW( psDD->Xq_Q10[ last_smple_idx ], psDD->Gain_Q16[ last_smple_idx ] ), 10 ) );
+ NSQ->sLTP_shp_Q10[ NSQ->sLTP_shp_buf_idx - decisionDelay + i ] = psDD->Shape_Q10[ last_smple_idx ];
+ sLTP_Q16[ NSQ->sLTP_buf_idx - decisionDelay + i ] = psDD->Pred_Q16[ last_smple_idx ];
+
+ }
+ SKP_memcpy( NSQ->sLPC_Q14, &psDD->sLPC_Q14[ psEncC->subfr_length ], NSQ_LPC_BUF_LENGTH * sizeof( SKP_int32 ) );
+
+ /* Update states */
+ NSQ->sLF_AR_shp_Q12 = psDD->LF_AR_Q12;
+ NSQ->prev_inv_gain_Q16 = NSQ->prev_inv_gain_Q16;
+ NSQ->lagPrev = psEncCtrlC->pitchL[ NB_SUBFR - 1 ];
+
+ /* Save quantized speech and noise shaping signals */
+ SKP_memcpy( NSQ->xq, &NSQ->xq[ psEncC->frame_length ], psEncC->frame_length * sizeof( SKP_int16 ) );
+ SKP_memcpy( NSQ->sLTP_shp_Q10, &NSQ->sLTP_shp_Q10[ psEncC->frame_length ], psEncC->frame_length * sizeof( SKP_int32 ) );
+
+}
+
+/******************************************/
+/* Noise shape quantizer for one subframe */
+/******************************************/
+SKP_INLINE void SKP_Silk_noise_shape_quantizer_del_dec(
+ SKP_Silk_nsq_state *NSQ, /* I/O NSQ state */
+ NSQ_del_dec_struct psDelDec[], /* I/O Delayed decision states */
+ SKP_int sigtype, /* I Signal type */
+ const SKP_int32 x_Q10[], /* I */
+ SKP_int q[], /* O */
+ SKP_int16 xq[], /* O */
+ SKP_int32 sLTP_Q16[], /* I/O LTP filter state */
+ const SKP_int16 a_Q12[], /* I Short term prediction coefs */
+ const SKP_int16 b_Q14[], /* I Long term prediction coefs */
+ const SKP_int16 AR_shp_Q13[], /* I Noise shaping coefs */
+ SKP_int lag, /* I Pitch lag */
+ SKP_int32 HarmShapeFIRPacked_Q14, /* I */
+ SKP_int Tilt_Q14, /* I Spectral tilt */
+ SKP_int32 LF_shp_Q14, /* I */
+ SKP_int32 Gain_Q16, /* I */
+ SKP_int Lambda_Q10, /* I */
+ SKP_int offset_Q10, /* I */
+ SKP_int length, /* I Input length */
+ SKP_int subfr, /* I Subframe number */
+ SKP_int shapingLPCOrder, /* I Shaping LPC filter order */
+ SKP_int predictLPCOrder, /* I Prediction LPC filter order */
+ SKP_int nStatesDelayedDecision, /* I Number of states in decision tree */
+ SKP_int *smpl_buf_idx, /* I Index to newest samples in buffers */
+ SKP_int decisionDelay /* I */
+)
+{
+ SKP_int i, j, k, Winner_ind, RDmin_ind, RDmax_ind, last_smple_idx;
+ SKP_int32 Winner_rand_state;
+ SKP_int32 LTP_pred_Q14, LPC_pred_Q10, n_AR_Q10, n_LTP_Q14;
+ SKP_int32 n_LF_Q10;
+ SKP_int32 r_Q10, rr_Q20, rd1_Q10, rd2_Q10, RDmin_Q10, RDmax_Q10;
+ SKP_int32 q1_Q10, q2_Q10;
+ SKP_int32 Atmp, dither;
+ SKP_int32 exc_Q10, LPC_exc_Q10, xq_Q10;
+ SKP_int32 tmp, sLF_AR_shp_Q10;
+ SKP_int32 *pred_lag_ptr, *shp_lag_ptr;
+ SKP_int32 *psLPC_Q14;
+ SKP_int32 a_Q12_tmp[ MAX_LPC_ORDER / 2 ], AR_shp_Q13_tmp[ MAX_LPC_ORDER / 2 ];
+ NSQ_sample_struct psSampleState[ DEL_DEC_STATES_MAX ][ 2 ];
+ NSQ_del_dec_struct *psDD;
+ NSQ_sample_struct *psSS;
+
+ shp_lag_ptr = &NSQ->sLTP_shp_Q10[ NSQ->sLTP_shp_buf_idx - lag + HARM_SHAPE_FIR_TAPS / 2 ];
+ pred_lag_ptr = &sLTP_Q16[ NSQ->sLTP_buf_idx - lag + LTP_ORDER / 2 ];
+
+ /* Preload LPC coeficients to array on stack. Gives small performance gain */
+ SKP_memcpy( a_Q12_tmp, a_Q12, predictLPCOrder * sizeof( SKP_int16 ) );
+ SKP_memcpy( AR_shp_Q13_tmp, AR_shp_Q13, shapingLPCOrder * sizeof( SKP_int16 ) );
+
+ for( i = 0; i < length; i++ ) {
+ /* Perform common calculations used in all states */
+
+ /* Long-term prediction */
+ if( sigtype == SIG_TYPE_VOICED ) {
+ /* Unrolled loop */
+ LTP_pred_Q14 = SKP_SMULWB( pred_lag_ptr[ 0 ], b_Q14[ 0 ] );
+ LTP_pred_Q14 = SKP_SMLAWB( LTP_pred_Q14, pred_lag_ptr[ -1 ], b_Q14[ 1 ] );
+ LTP_pred_Q14 = SKP_SMLAWB( LTP_pred_Q14, pred_lag_ptr[ -2 ], b_Q14[ 2 ] );
+ LTP_pred_Q14 = SKP_SMLAWB( LTP_pred_Q14, pred_lag_ptr[ -3 ], b_Q14[ 3 ] );
+ LTP_pred_Q14 = SKP_SMLAWB( LTP_pred_Q14, pred_lag_ptr[ -4 ], b_Q14[ 4 ] );
+ pred_lag_ptr++;
+ } else {
+ LTP_pred_Q14 = 0;
+ }
+
+ /* Long-term shaping */
+ if( lag > 0 ) {
+ /* Symmetric, packed FIR coefficients */
+ n_LTP_Q14 = SKP_SMULWB( SKP_ADD32( shp_lag_ptr[ 0 ], shp_lag_ptr[ -2 ] ), HarmShapeFIRPacked_Q14 );
+ n_LTP_Q14 = SKP_SMLAWT( n_LTP_Q14, shp_lag_ptr[ -1 ], HarmShapeFIRPacked_Q14 );
+ n_LTP_Q14 = SKP_LSHIFT( n_LTP_Q14, 6 );
+ shp_lag_ptr++;
+ } else {
+ n_LTP_Q14 = 0;
+ }
+
+ for( k = 0; k < nStatesDelayedDecision; k++ ) {
+ /* Delayed decision state */
+ psDD = &psDelDec[ k ];
+
+ /* Sample state */
+ psSS = psSampleState[ k ];
+
+ /* Generate dither */
+ psDD->Seed = SKP_RAND( psDD->Seed );
+
+ /* dither = rand_seed < 0 ? 0xFFFFFFFF : 0; */
+ dither = SKP_RSHIFT( psDD->Seed, 31 );
+
+ /* Pointer used in short term prediction and shaping */
+ psLPC_Q14 = &psDD->sLPC_Q14[ NSQ_LPC_BUF_LENGTH - 1 + i ];
+ /* Short-term prediction */
+ SKP_assert( ( predictLPCOrder & 1 ) == 0 ); /* check that order is even */
+ SKP_assert( ( (SKP_int64)a_Q12 & 3 ) == 0 ); /* check that array starts at 4-byte aligned address */
+ SKP_assert( predictLPCOrder >= 10 ); /* check that unrolling works */
+
+ /* Partially unrolled */
+ Atmp = a_Q12_tmp[ 0 ]; /* read two coefficients at once */
+ LPC_pred_Q10 = SKP_SMULWB( psLPC_Q14[ 0 ], Atmp );
+ LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psLPC_Q14[ -1 ], Atmp );
+ Atmp = a_Q12_tmp[ 1 ];
+ LPC_pred_Q10 = SKP_SMLAWB( LPC_pred_Q10, psLPC_Q14[ -2 ], Atmp );
+ LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psLPC_Q14[ -3 ], Atmp );
+ Atmp = a_Q12_tmp[ 2 ];
+ LPC_pred_Q10 = SKP_SMLAWB( LPC_pred_Q10, psLPC_Q14[ -4 ], Atmp );
+ LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psLPC_Q14[ -5 ], Atmp );
+ Atmp = a_Q12_tmp[ 3 ];
+ LPC_pred_Q10 = SKP_SMLAWB( LPC_pred_Q10, psLPC_Q14[ -6 ], Atmp );
+ LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psLPC_Q14[ -7 ], Atmp );
+ Atmp = a_Q12_tmp[ 4 ];
+ LPC_pred_Q10 = SKP_SMLAWB( LPC_pred_Q10, psLPC_Q14[ -8 ], Atmp );
+ LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psLPC_Q14[ -9 ], Atmp );
+ for( j = 10; j < predictLPCOrder; j += 2 ) {
+ Atmp = a_Q12_tmp[ j >> 1 ]; /* read two coefficients at once */
+ LPC_pred_Q10 = SKP_SMLAWB( LPC_pred_Q10, psLPC_Q14[ -j ], Atmp );
+ LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psLPC_Q14[ -j - 1 ], Atmp );
+ }
+
+ /* Noise shape feedback */
+ SKP_assert( ( shapingLPCOrder & 1 ) == 0 ); /* check that order is even */
+ SKP_assert( ( (SKP_int64)AR_shp_Q13 & 3 ) == 0 ); /* check that array starts at 4-byte aligned address */
+ SKP_assert( shapingLPCOrder >= 12 ); /* check that unrolling works */
+ /* NOTE: the code below loads two int16 values in an int32, and multiplies each using the */
+ /* SMLAWB and SMLAWT instructions. On a big-endian CPU the two int16 variables would be */
+ /* loaded in reverse order and the code will give the wrong result. In that case swapping */
+ /* the SMLAWB and SMLAWT instructions should solve the problem. */
+
+ /* Partially unrolled */
+ Atmp = AR_shp_Q13_tmp[ 0 ]; /* read two coefficients at once */
+ n_AR_Q10 = SKP_SMULWB( psLPC_Q14[ 0 ], Atmp );
+ n_AR_Q10 = SKP_SMLAWT( n_AR_Q10, psLPC_Q14[ -1 ], Atmp );
+ Atmp = AR_shp_Q13_tmp[ 1 ];
+ n_AR_Q10 = SKP_SMLAWB( n_AR_Q10, psLPC_Q14[ -2 ], Atmp );
+ n_AR_Q10 = SKP_SMLAWT( n_AR_Q10, psLPC_Q14[ -3 ], Atmp );
+ Atmp = AR_shp_Q13_tmp[ 2 ];
+ n_AR_Q10 = SKP_SMLAWB( n_AR_Q10, psLPC_Q14[ -4 ], Atmp );
+ n_AR_Q10 = SKP_SMLAWT( n_AR_Q10, psLPC_Q14[ -5 ], Atmp );
+ Atmp = AR_shp_Q13_tmp[ 3 ];
+ n_AR_Q10 = SKP_SMLAWB( n_AR_Q10, psLPC_Q14[ -6 ], Atmp );
+ n_AR_Q10 = SKP_SMLAWT( n_AR_Q10, psLPC_Q14[ -7 ], Atmp );
+ Atmp = AR_shp_Q13_tmp[ 4 ];
+ n_AR_Q10 = SKP_SMLAWB( n_AR_Q10, psLPC_Q14[ -8 ], Atmp );
+ n_AR_Q10 = SKP_SMLAWT( n_AR_Q10, psLPC_Q14[ -9 ], Atmp );
+ Atmp = AR_shp_Q13_tmp[ 5 ];
+ n_AR_Q10 = SKP_SMLAWB( n_AR_Q10, psLPC_Q14[ -10 ], Atmp );
+ n_AR_Q10 = SKP_SMLAWT( n_AR_Q10, psLPC_Q14[ -11 ], Atmp );
+ for( j = 12; j < shapingLPCOrder; j += 2 ) {
+ Atmp = AR_shp_Q13_tmp[ j >> 1 ]; /* read two coefficients at once */
+ n_AR_Q10 = SKP_SMLAWB( n_AR_Q10, psLPC_Q14[ -j ], Atmp );
+ n_AR_Q10 = SKP_SMLAWT( n_AR_Q10, psLPC_Q14[ -j - 1 ], Atmp );
+ }
+ n_AR_Q10 = SKP_RSHIFT( n_AR_Q10, 1 ); /* Q11 -> Q10 */
+ n_AR_Q10 = SKP_SMLAWB( n_AR_Q10, psDD->LF_AR_Q12, Tilt_Q14 );
+
+ n_LF_Q10 = SKP_LSHIFT( SKP_SMULWB( psDD->Shape_Q10[ *smpl_buf_idx ], LF_shp_Q14 ), 2 );
+ n_LF_Q10 = SKP_SMLAWT( n_LF_Q10, psDD->LF_AR_Q12, LF_shp_Q14 );
+
+ /* Input minus prediction plus noise feedback */
+ /* r = x[ i ] - LTP_pred - LPC_pred + n_AR + n_Tilt + n_LF + n_LTP */
+ tmp = SKP_SUB32( LTP_pred_Q14, n_LTP_Q14 ); /* Add Q14 stuff */
+ tmp = SKP_RSHIFT_ROUND( tmp, 4 ); /* round to Q10 */
+ tmp = SKP_ADD32( tmp, LPC_pred_Q10 ); /* add Q10 stuff */
+ tmp = SKP_SUB32( tmp, n_AR_Q10 ); /* subtract Q10 stuff */
+ tmp = SKP_SUB32( tmp, n_LF_Q10 ); /* subtract Q10 stuff */
+ r_Q10 = SKP_SUB32( x_Q10[ i ], tmp ); /* residual error Q10 */
+
+
+ /* Flip sign depending on dither */
+ r_Q10 = ( r_Q10 ^ dither ) - dither;
+ r_Q10 = SKP_SUB32( r_Q10, offset_Q10 );
+ r_Q10 = SKP_LIMIT( r_Q10, -64 << 10, 64 << 10 );
+
+ /* Find two quantization level candidates and measure their rate-distortion */
+ if( r_Q10 < -1536 ) {
+ q1_Q10 = SKP_LSHIFT( SKP_RSHIFT_ROUND( r_Q10, 10 ), 10 );
+ r_Q10 = SKP_SUB32( r_Q10, q1_Q10 );
+ rd1_Q10 = SKP_RSHIFT( SKP_SMLABB( SKP_MUL( -SKP_ADD32( q1_Q10, offset_Q10 ), Lambda_Q10 ), r_Q10, r_Q10 ), 10 );
+ rd2_Q10 = SKP_ADD32( rd1_Q10, 1024 );
+ rd2_Q10 = SKP_SUB32( rd2_Q10, SKP_ADD_LSHIFT32( Lambda_Q10, r_Q10, 1 ) );
+ q2_Q10 = SKP_ADD32( q1_Q10, 1024 );
+ } else if( r_Q10 > 512 ) {
+ q1_Q10 = SKP_LSHIFT( SKP_RSHIFT_ROUND( r_Q10, 10 ), 10 );
+ r_Q10 = SKP_SUB32( r_Q10, q1_Q10 );
+ rd1_Q10 = SKP_RSHIFT( SKP_SMLABB( SKP_MUL( SKP_ADD32( q1_Q10, offset_Q10 ), Lambda_Q10 ), r_Q10, r_Q10 ), 10 );
+ rd2_Q10 = SKP_ADD32( rd1_Q10, 1024 );
+ rd2_Q10 = SKP_SUB32( rd2_Q10, SKP_SUB_LSHIFT32( Lambda_Q10, r_Q10, 1 ) );
+ q2_Q10 = SKP_SUB32( q1_Q10, 1024 );
+ } else { /* r_Q10 >= -1536 && q1_Q10 <= 512 */
+ rr_Q20 = SKP_SMULBB( offset_Q10, Lambda_Q10 );
+ rd2_Q10 = SKP_RSHIFT( SKP_SMLABB( rr_Q20, r_Q10, r_Q10 ), 10 );
+ rd1_Q10 = SKP_ADD32( rd2_Q10, 1024 );
+ rd1_Q10 = SKP_ADD32( rd1_Q10, SKP_SUB_RSHIFT32( SKP_ADD_LSHIFT32( Lambda_Q10, r_Q10, 1 ), rr_Q20, 9 ) );
+ q1_Q10 = -1024;
+ q2_Q10 = 0;
+ }
+
+ if( rd1_Q10 < rd2_Q10 ) {
+ psSS[ 0 ].RD_Q10 = SKP_ADD32( psDD->RD_Q10, rd1_Q10 );
+ psSS[ 1 ].RD_Q10 = SKP_ADD32( psDD->RD_Q10, rd2_Q10 );
+ psSS[ 0 ].Q_Q10 = q1_Q10;
+ psSS[ 1 ].Q_Q10 = q2_Q10;
+ } else {
+ psSS[ 0 ].RD_Q10 = SKP_ADD32( psDD->RD_Q10, rd2_Q10 );
+ psSS[ 1 ].RD_Q10 = SKP_ADD32( psDD->RD_Q10, rd1_Q10 );
+ psSS[ 0 ].Q_Q10 = q2_Q10;
+ psSS[ 1 ].Q_Q10 = q1_Q10;
+ }
+
+ /* Update states for best quantization */
+
+ /* Quantized excitation */
+ exc_Q10 = SKP_ADD32( offset_Q10, psSS[ 0 ].Q_Q10 );
+ exc_Q10 = ( exc_Q10 ^ dither ) - dither;
+
+ /* Add predictions */
+ LPC_exc_Q10 = exc_Q10 + SKP_RSHIFT_ROUND( LTP_pred_Q14, 4 );
+ xq_Q10 = SKP_ADD32( LPC_exc_Q10, LPC_pred_Q10 );
+
+ /* Update states */
+ sLF_AR_shp_Q10 = SKP_SUB32( xq_Q10, n_AR_Q10 );
+ psSS[ 0 ].sLTP_shp_Q10 = SKP_SUB32( sLF_AR_shp_Q10, n_LF_Q10 );
+ psSS[ 0 ].LF_AR_Q12 = SKP_LSHIFT( sLF_AR_shp_Q10, 2 );
+ psSS[ 0 ].xq_Q14 = SKP_LSHIFT( xq_Q10, 4 );
+ psSS[ 0 ].LPC_exc_Q16 = SKP_LSHIFT( LPC_exc_Q10, 6 );
+
+ /* Update states for second best quantization */
+
+ /* Quantized excitation */
+ exc_Q10 = SKP_ADD32( offset_Q10, psSS[ 1 ].Q_Q10 );
+ exc_Q10 = ( exc_Q10 ^ dither ) - dither;
+
+ /* Add predictions */
+ LPC_exc_Q10 = exc_Q10 + SKP_RSHIFT_ROUND( LTP_pred_Q14, 4 );
+ xq_Q10 = SKP_ADD32( LPC_exc_Q10, LPC_pred_Q10 );
+
+ /* Update states */
+ sLF_AR_shp_Q10 = SKP_SUB32( xq_Q10, n_AR_Q10 );
+ psSS[ 1 ].sLTP_shp_Q10 = SKP_SUB32( sLF_AR_shp_Q10, n_LF_Q10 );
+ psSS[ 1 ].LF_AR_Q12 = SKP_LSHIFT( sLF_AR_shp_Q10, 2 );
+ psSS[ 1 ].xq_Q14 = SKP_LSHIFT( xq_Q10, 4 );
+ psSS[ 1 ].LPC_exc_Q16 = SKP_LSHIFT( LPC_exc_Q10, 6 );
+ }
+
+ *smpl_buf_idx = ( *smpl_buf_idx - 1 ) & DECISION_DELAY_MASK; /* Index to newest samples */
+ last_smple_idx = ( *smpl_buf_idx + decisionDelay ) & DECISION_DELAY_MASK; /* Index to decisionDelay old samples */
+
+ /* Find winner */
+ RDmin_Q10 = psSampleState[ 0 ][ 0 ].RD_Q10;
+ Winner_ind = 0;
+ for( k = 1; k < nStatesDelayedDecision; k++ ) {
+ if( psSampleState[ k ][ 0 ].RD_Q10 < RDmin_Q10 ) {
+ RDmin_Q10 = psSampleState[ k ][ 0 ].RD_Q10;
+ Winner_ind = k;
+ }
+ }
+
+ /* Increase RD values of expired states */
+ Winner_rand_state = psDelDec[ Winner_ind ].RandState[ last_smple_idx ];
+ for( k = 0; k < nStatesDelayedDecision; k++ ) {
+ if( psDelDec[ k ].RandState[ last_smple_idx ] != Winner_rand_state ) {
+ psSampleState[ k ][ 0 ].RD_Q10 = SKP_ADD32( psSampleState[ k ][ 0 ].RD_Q10, ( SKP_int32_MAX >> 4 ) );
+ psSampleState[ k ][ 1 ].RD_Q10 = SKP_ADD32( psSampleState[ k ][ 1 ].RD_Q10, ( SKP_int32_MAX >> 4 ) );
+ SKP_assert( psSampleState[ k ][ 0 ].RD_Q10 >= 0 );
+ }
+ }
+
+ /* Find worst in first set and best in second set */
+ RDmax_Q10 = psSampleState[ 0 ][ 0 ].RD_Q10;
+ RDmin_Q10 = psSampleState[ 0 ][ 1 ].RD_Q10;
+ RDmax_ind = 0;
+ RDmin_ind = 0;
+ for( k = 1; k < nStatesDelayedDecision; k++ ) {
+ /* find worst in first set */
+ if( psSampleState[ k ][ 0 ].RD_Q10 > RDmax_Q10 ) {
+ RDmax_Q10 = psSampleState[ k ][ 0 ].RD_Q10;
+ RDmax_ind = k;
+ }
+ /* find best in second set */
+ if( psSampleState[ k ][ 1 ].RD_Q10 < RDmin_Q10 ) {
+ RDmin_Q10 = psSampleState[ k ][ 1 ].RD_Q10;
+ RDmin_ind = k;
+ }
+ }
+
+ /* Replace a state if best from second set outperforms worst in first set */
+ if( RDmin_Q10 < RDmax_Q10 ) {
+ SKP_Silk_copy_del_dec_state( &psDelDec[ RDmax_ind ], &psDelDec[ RDmin_ind ], i );
+ SKP_memcpy( &psSampleState[ RDmax_ind ][ 0 ], &psSampleState[ RDmin_ind ][ 1 ], sizeof( NSQ_sample_struct ) );
+ }
+
+ /* Write samples from winner to output and long-term filter states */
+ psDD = &psDelDec[ Winner_ind ];
+ if( subfr > 0 || i >= decisionDelay ) {
+ q[ i - decisionDelay ] = ( SKP_int )SKP_RSHIFT( psDD->Q_Q10[ last_smple_idx ], 10 );
+ xq[ i - decisionDelay ] = ( SKP_int16 )SKP_SAT16( SKP_RSHIFT_ROUND(
+ SKP_SMULWW( psDD->Xq_Q10[ last_smple_idx ], psDD->Gain_Q16[ last_smple_idx ] ), 10 ) );
+ NSQ->sLTP_shp_Q10[ NSQ->sLTP_shp_buf_idx - decisionDelay ] = psDD->Shape_Q10[ last_smple_idx ];
+ sLTP_Q16[ NSQ->sLTP_buf_idx - decisionDelay ] = psDD->Pred_Q16[ last_smple_idx ];
+ }
+ NSQ->sLTP_shp_buf_idx++;
+ NSQ->sLTP_buf_idx++;
+
+ /* Update states */
+ for( k = 0; k < nStatesDelayedDecision; k++ ) {
+ psDD = &psDelDec[ k ];
+ psSS = &psSampleState[ k ][ 0 ];
+ psDD->LF_AR_Q12 = psSS->LF_AR_Q12;
+ psDD->sLPC_Q14[ NSQ_LPC_BUF_LENGTH + i ] = psSS->xq_Q14;
+ psDD->Xq_Q10[ *smpl_buf_idx ] = SKP_RSHIFT( psSS->xq_Q14, 4 );
+ psDD->Q_Q10[ *smpl_buf_idx ] = psSS->Q_Q10;
+ psDD->Pred_Q16[ *smpl_buf_idx ] = psSS->LPC_exc_Q16;
+ psDD->Shape_Q10[ *smpl_buf_idx ] = psSS->sLTP_shp_Q10;
+ psDD->Seed = SKP_ADD_RSHIFT32( psDD->Seed, psSS->Q_Q10, 10 );
+ psDD->RandState[ *smpl_buf_idx ] = psDD->Seed;
+ psDD->RD_Q10 = psSS->RD_Q10;
+ psDD->Gain_Q16[ *smpl_buf_idx ] = Gain_Q16;
+ }
+ }
+ /* Update LPC states */
+ for( k = 0; k < nStatesDelayedDecision; k++ ) {
+ psDD = &psDelDec[ k ];
+ SKP_memcpy( psDD->sLPC_Q14, &psDD->sLPC_Q14[ length ], NSQ_LPC_BUF_LENGTH * sizeof( SKP_int32 ) );
+ }
+}
+
+SKP_INLINE void SKP_Silk_nsq_del_dec_scale_states(
+ SKP_Silk_nsq_state *NSQ, /* I/O NSQ state */
+ NSQ_del_dec_struct psDelDec[], /* I/O Delayed decision states */
+ const SKP_int16 x[], /* I Input in Q0 */
+ SKP_int32 x_sc_Q10[], /* O Input scaled with 1/Gain in Q10 */
+ SKP_int length, /* I Length of input */
+ SKP_int16 sLTP[], /* I Re-whitened LTP state in Q0 */
+ SKP_int32 sLTP_Q16[], /* O LTP state matching scaled input */
+ SKP_int subfr, /* I Subframe number */
+ SKP_int nStatesDelayedDecision, /* I Number of del dec states */
+ SKP_int smpl_buf_idx, /* I Index to newest samples in buffers */
+ const SKP_int LTP_scale_Q14, /* I LTP state scaling */
+ const SKP_int32 Gains_Q16[ NB_SUBFR ], /* I */
+ const SKP_int pitchL[ NB_SUBFR ] /* I Pitch lag */
+)
+{
+ SKP_int i, k, scale_length, lag;
+ SKP_int32 inv_gain_Q16, gain_adj_Q16, inv_gain_Q32;
+ NSQ_del_dec_struct *psDD;
+
+ inv_gain_Q16 = SKP_DIV32( SKP_int32_MAX, SKP_RSHIFT( Gains_Q16[ subfr ], 1 ) );
+ inv_gain_Q16 = SKP_min( inv_gain_Q16, SKP_int16_MAX );
+ lag = pitchL[ subfr ];
+ /* After rewhitening the LTP state is un-scaled. So scale with inv_gain_Q16 */
+ if( NSQ->rewhite_flag ) {
+ inv_gain_Q32 = SKP_LSHIFT( inv_gain_Q16, 16 );
+ if( subfr == 0 ) {
+ /* Do LTP downscaling */
+ inv_gain_Q32 = SKP_LSHIFT( SKP_SMULWB( inv_gain_Q32, LTP_scale_Q14 ), 2 );
+ }
+ for( i = NSQ->sLTP_buf_idx - lag - LTP_ORDER / 2; i < NSQ->sLTP_buf_idx; i++ ) {
+ SKP_assert( i < MAX_FRAME_LENGTH );
+ sLTP_Q16[ i ] = SKP_SMULWB( inv_gain_Q32, sLTP[ i ] );
+ }
+ }
+
+ /* Adjust for changing gain */
+ if( inv_gain_Q16 != NSQ->prev_inv_gain_Q16 ) {
+ gain_adj_Q16 = SKP_DIV32_varQ( inv_gain_Q16, NSQ->prev_inv_gain_Q16, 16 );
+
+ for( k = 0; k < nStatesDelayedDecision; k++ ) {
+ psDD = &psDelDec[ k ];
+
+ /* Scale scalar states */
+ psDD->LF_AR_Q12 = SKP_SMULWW( gain_adj_Q16, psDD->LF_AR_Q12 );
+
+ /* scale short term state */
+ for( i = 0; i < NSQ_LPC_BUF_LENGTH; i++ ) {
+ psDD->sLPC_Q14[ NSQ_LPC_BUF_LENGTH - i - 1 ] = SKP_SMULWW( gain_adj_Q16, psDD->sLPC_Q14[ NSQ_LPC_BUF_LENGTH - i - 1 ] );
+ }
+ for( i = 0; i < DECISION_DELAY; i++ ) {
+ psDD->Pred_Q16[ i ] = SKP_SMULWW( gain_adj_Q16, psDD->Pred_Q16[ i ] );
+ psDD->Shape_Q10[ i ] = SKP_SMULWW( gain_adj_Q16, psDD->Shape_Q10[ i ] );
+ }
+ }
+
+ /* Scale long term shaping state */
+
+ /* Calculate length to be scaled, Worst case: Next frame is voiced with max lag */
+ scale_length = length * NB_SUBFR; /* aprox max lag */
+ scale_length = scale_length - SKP_SMULBB( NB_SUBFR - ( subfr + 1 ), length ); /* subtract samples that will be too old in next frame */
+ scale_length = SKP_max_int( scale_length, lag + LTP_ORDER ); /* make sure to scale whole pitch period if voiced */
+
+ for( i = NSQ->sLTP_shp_buf_idx - scale_length; i < NSQ->sLTP_shp_buf_idx; i++ ) {
+ NSQ->sLTP_shp_Q10[ i ] = SKP_SMULWW( gain_adj_Q16, NSQ->sLTP_shp_Q10[ i ] );
+ }
+
+ /* Scale LTP predict state */
+ if( NSQ->rewhite_flag == 0 ) {
+ for( i = NSQ->sLTP_buf_idx - lag - LTP_ORDER / 2; i < NSQ->sLTP_buf_idx; i++ ) {
+ sLTP_Q16[ i ] = SKP_SMULWW( gain_adj_Q16, sLTP_Q16[ i ] );
+ }
+ }
+ }
+
+ /* Scale input */
+ for( i = 0; i < length; i++ ) {
+ x_sc_Q10[ i ] = SKP_RSHIFT( SKP_SMULBB( x[ i ], ( SKP_int16 )inv_gain_Q16 ), 6 );
+ }
+
+ /* save inv_gain */
+ SKP_assert( inv_gain_Q16 != 0 );
+ NSQ->prev_inv_gain_Q16 = inv_gain_Q16;
+}
+
+SKP_INLINE void SKP_Silk_copy_del_dec_state(
+ NSQ_del_dec_struct *DD_dst, /* I Dst del dec state */
+ NSQ_del_dec_struct *DD_src, /* I Src del dec state */
+ SKP_int LPC_state_idx /* I Index to LPC buffer */
+)
+{
+ SKP_memcpy( DD_dst->RandState, DD_src->RandState, DECISION_DELAY * sizeof( SKP_int ) );
+ SKP_memcpy( DD_dst->Q_Q10, DD_src->Q_Q10, DECISION_DELAY * sizeof( SKP_int32 ) );
+ SKP_memcpy( DD_dst->Pred_Q16, DD_src->Pred_Q16, DECISION_DELAY * sizeof( SKP_int32 ) );
+ SKP_memcpy( DD_dst->Shape_Q10, DD_src->Shape_Q10, DECISION_DELAY * sizeof( SKP_int32 ) );
+ SKP_memcpy( DD_dst->Xq_Q10, DD_src->Xq_Q10, DECISION_DELAY * sizeof( SKP_int32 ) );
+
+ SKP_memcpy( &DD_dst->sLPC_Q14[ LPC_state_idx ], &DD_src->sLPC_Q14[ LPC_state_idx ], NSQ_LPC_BUF_LENGTH * sizeof( SKP_int32 ) );
+ DD_dst->LF_AR_Q12 = DD_src->LF_AR_Q12;
+ DD_dst->Seed = DD_src->Seed;
+ DD_dst->SeedInit = DD_src->SeedInit;
+ DD_dst->RD_Q10 = DD_src->RD_Q10;
+}
--- /dev/null
+++ b/src/SKP_Silk_PLC.c
@@ -1,0 +1,389 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_main.h"
+#include "SKP_Silk_PLC.h"
+
+#define NB_ATT 2
+static const SKP_int16 HARM_ATT_Q15[NB_ATT] = { 32440, 31130 }; /* 0.99, 0.95 */
+static const SKP_int16 PLC_RAND_ATTENUATE_V_Q15[NB_ATT] = { 31130, 26214 }; /* 0.95, 0.8 */
+static const SKP_int16 PLC_RAND_ATTENUATE_UV_Q15[NB_ATT] = { 32440, 29491 }; /* 0.99, 0.9 */
+
+void SKP_Silk_PLC_Reset(
+ SKP_Silk_decoder_state *psDec /* I/O Decoder state */
+)
+{
+ psDec->sPLC.pitchL_Q8 = SKP_RSHIFT( psDec->frame_length, 1 );
+}
+
+void SKP_Silk_PLC(
+ SKP_Silk_decoder_state *psDec, /* I Decoder state */
+ SKP_Silk_decoder_control *psDecCtrl, /* I Decoder control */
+ SKP_int16 signal[], /* O Concealed signal */
+ SKP_int length, /* I length of residual */
+ SKP_int lost /* I Loss flag */
+)
+{
+ /* PLC control function */
+ if( psDec->fs_kHz != psDec->sPLC.fs_kHz ) {
+ SKP_Silk_PLC_Reset( psDec );
+ psDec->sPLC.fs_kHz = psDec->fs_kHz;
+ }
+
+ if( lost ) {
+ /****************************/
+ /* Generate Signal */
+ /****************************/
+ SKP_Silk_PLC_conceal( psDec, psDecCtrl, signal, length );
+ } else {
+ /****************************/
+ /* Update state */
+ /****************************/
+ SKP_Silk_PLC_update( psDec, psDecCtrl, signal, length );
+ }
+}
+
+/**************************************************/
+/* Update state of PLC */
+/**************************************************/
+void SKP_Silk_PLC_update(
+ SKP_Silk_decoder_state *psDec, /* (I/O) Decoder state */
+ SKP_Silk_decoder_control *psDecCtrl, /* (I/O) Decoder control */
+ SKP_int16 signal[],
+ SKP_int length
+)
+{
+ SKP_int32 LTP_Gain_Q14, temp_LTP_Gain_Q14;
+ SKP_int i, j;
+ SKP_Silk_PLC_struct *psPLC;
+
+ psPLC = &psDec->sPLC;
+
+ /* Update parameters used in case of packet loss */
+ psDec->prev_sigtype = psDecCtrl->sigtype;
+ LTP_Gain_Q14 = 0;
+ if( psDecCtrl->sigtype == SIG_TYPE_VOICED ) {
+ /* Find the parameters for the last subframe which contains a pitch pulse */
+ for( j = 0; j * psDec->subfr_length < psDecCtrl->pitchL[ NB_SUBFR - 1 ]; j++ ) {
+ temp_LTP_Gain_Q14 = 0;
+ for( i = 0; i < LTP_ORDER; i++ ) {
+ temp_LTP_Gain_Q14 += psDecCtrl->LTPCoef_Q14[ ( NB_SUBFR - 1 - j ) * LTP_ORDER + i ];
+ }
+ if( temp_LTP_Gain_Q14 > LTP_Gain_Q14 ) {
+ LTP_Gain_Q14 = temp_LTP_Gain_Q14;
+ SKP_memcpy( psPLC->LTPCoef_Q14,
+ &psDecCtrl->LTPCoef_Q14[ SKP_SMULBB( NB_SUBFR - 1 - j, LTP_ORDER ) ],
+ LTP_ORDER * sizeof( SKP_int16 ) );
+
+ psPLC->pitchL_Q8 = SKP_LSHIFT( psDecCtrl->pitchL[ NB_SUBFR - 1 - j ], 8 );
+ }
+ }
+
+#if USE_SINGLE_TAP
+ SKP_memset( psPLC->LTPCoef_Q14, 0, LTP_ORDER * sizeof( SKP_int16 ) );
+ psPLC->LTPCoef_Q14[ LTP_ORDER / 2 ] = LTP_Gain_Q14;
+#endif
+
+ /* Limit LT coefs */
+ if( LTP_Gain_Q14 < V_PITCH_GAIN_START_MIN_Q14 ) {
+ SKP_int scale_Q10;
+ SKP_int32 tmp;
+
+ tmp = SKP_LSHIFT( V_PITCH_GAIN_START_MIN_Q14, 10 );
+ scale_Q10 = SKP_DIV32( tmp, SKP_max( LTP_Gain_Q14, 1 ) );
+ for( i = 0; i < LTP_ORDER; i++ ) {
+ psPLC->LTPCoef_Q14[ i ] = SKP_RSHIFT( SKP_SMULBB( psPLC->LTPCoef_Q14[ i ], scale_Q10 ), 10 );
+ }
+ } else if( LTP_Gain_Q14 > V_PITCH_GAIN_START_MAX_Q14 ) {
+ SKP_int scale_Q14;
+ SKP_int32 tmp;
+
+ tmp = SKP_LSHIFT( V_PITCH_GAIN_START_MAX_Q14, 14 );
+ scale_Q14 = SKP_DIV32( tmp, SKP_max( LTP_Gain_Q14, 1 ) );
+ for( i = 0; i < LTP_ORDER; i++ ) {
+ psPLC->LTPCoef_Q14[ i ] = SKP_RSHIFT( SKP_SMULBB( psPLC->LTPCoef_Q14[ i ], scale_Q14 ), 14 );
+ }
+ }
+ } else {
+ psPLC->pitchL_Q8 = SKP_LSHIFT( SKP_SMULBB( psDec->fs_kHz, 18 ), 8 );
+ SKP_memset( psPLC->LTPCoef_Q14, 0, LTP_ORDER * sizeof( SKP_int16 ));
+ }
+
+ /* Save LPC coeficients */
+ SKP_memcpy( psPLC->prevLPC_Q12, psDecCtrl->PredCoef_Q12[ 1 ], psDec->LPC_order * sizeof( SKP_int16 ) );
+ psPLC->prevLTP_scale_Q14 = psDecCtrl->LTP_scale_Q14;
+
+ /* Save Gains */
+ SKP_memcpy( psPLC->prevGain_Q16, psDecCtrl->Gains_Q16, NB_SUBFR * sizeof( SKP_int32 ) );
+}
+
+void SKP_Silk_PLC_conceal(
+ SKP_Silk_decoder_state *psDec, /* I/O Decoder state */
+ SKP_Silk_decoder_control *psDecCtrl, /* I/O Decoder control */
+ SKP_int16 signal[], /* O concealed signal */
+ SKP_int length /* I length of residual */
+)
+{
+ SKP_int i, j, k;
+ SKP_int16 *B_Q14, exc_buf[ MAX_FRAME_LENGTH ], *exc_buf_ptr;
+ SKP_int16 rand_scale_Q14, A_Q12_tmp[ MAX_LPC_ORDER ];
+ SKP_int32 rand_seed, harm_Gain_Q15, rand_Gain_Q15;
+ SKP_int lag, idx, shift1, shift2;
+ SKP_int32 energy1, energy2, *rand_ptr, *pred_lag_ptr, Atmp;
+ SKP_int32 sig_Q10[ MAX_FRAME_LENGTH ], *sig_Q10_ptr, LPC_exc_Q10, LPC_pred_Q10, LTP_pred_Q14;
+ SKP_Silk_PLC_struct *psPLC;
+
+ psPLC = &psDec->sPLC;
+
+ /* Update LTP buffer */
+ SKP_memcpy( psDec->sLTP_Q16, &psDec->sLTP_Q16[ psDec->frame_length ], psDec->frame_length * sizeof( SKP_int32 ) );
+
+ /* LPC concealment. Apply BWE to previous LPC */
+ SKP_Silk_bwexpander( psPLC->prevLPC_Q12, psDec->LPC_order, BWE_COEF_Q16 );
+
+ /* Find random noise component */
+ /* Scale previous excitation signal */
+ exc_buf_ptr = exc_buf;
+ for( k = ( NB_SUBFR >> 1 ); k < NB_SUBFR; k++ ) {
+ for( i = 0; i < psDec->subfr_length; i++ ) {
+ exc_buf_ptr[ i ] = ( SKP_int16 )SKP_RSHIFT(
+ SKP_SMULWW( psDec->exc_Q10[ i + k * psDec->subfr_length ], psPLC->prevGain_Q16[ k ] ), 10 );
+ }
+ exc_buf_ptr += psDec->subfr_length;
+ }
+ /* Find the subframe with lowest energy of the last two and use that as random noise generator */
+ SKP_Silk_sum_sqr_shift( &energy1, &shift1, exc_buf, psDec->subfr_length );
+ SKP_Silk_sum_sqr_shift( &energy2, &shift2, &exc_buf[ psDec->subfr_length ], psDec->subfr_length );
+
+ if( SKP_RSHIFT( energy1, shift2 ) < SKP_RSHIFT( energy1, shift2 ) ) {
+ /* First sub-frame has lowest energy */
+ rand_ptr = &psDec->exc_Q10[ SKP_max_int( 0, 3 * psDec->subfr_length - RAND_BUF_SIZE ) ];
+ } else {
+ /* Second sub-frame has lowest energy */
+ rand_ptr = &psDec->exc_Q10[ SKP_max_int( 0, psDec->frame_length - RAND_BUF_SIZE ) ];
+ }
+
+ /* Setup Gain to random noise component */
+ B_Q14 = psPLC->LTPCoef_Q14;
+ rand_scale_Q14 = psPLC->randScale_Q14;
+
+ /* Setup attenuation gains */
+ harm_Gain_Q15 = HARM_ATT_Q15[ SKP_min_int( NB_ATT - 1, psDec->lossCnt ) ];
+ if( psDec->prev_sigtype == SIG_TYPE_VOICED ) {
+ rand_Gain_Q15 = PLC_RAND_ATTENUATE_V_Q15[ SKP_min_int( NB_ATT - 1, psDec->lossCnt ) ];
+ } else {
+ rand_Gain_Q15 = PLC_RAND_ATTENUATE_UV_Q15[ SKP_min_int( NB_ATT - 1, psDec->lossCnt ) ];
+ }
+
+ /* First Lost frame */
+ if( psDec->lossCnt == 0 ) {
+ rand_scale_Q14 = (1 << 14 );
+
+ /* Reduce random noise Gain for voiced frames */
+ if( psDec->prev_sigtype == SIG_TYPE_VOICED ) {
+ for( i = 0; i < LTP_ORDER; i++ ) {
+ rand_scale_Q14 -= B_Q14[ i ];
+ }
+ rand_scale_Q14 = SKP_max_16( 3277, rand_scale_Q14 ); /* 0.2 */
+ rand_scale_Q14 = ( SKP_int16 )SKP_RSHIFT( SKP_SMULBB( rand_scale_Q14, psPLC->prevLTP_scale_Q14 ), 14 );
+ }
+
+ /* Reduce random noise for unvoiced frames with high LPC gain */
+ if( psDec->prev_sigtype == SIG_TYPE_UNVOICED ) {
+ SKP_int32 invGain_Q30, down_scale_Q30;
+
+ SKP_Silk_LPC_inverse_pred_gain( &invGain_Q30, psPLC->prevLPC_Q12, psDec->LPC_order );
+
+ down_scale_Q30 = SKP_min_32( SKP_RSHIFT( ( 1 << 30 ), LOG2_INV_LPC_GAIN_HIGH_THRES ), invGain_Q30 );
+ down_scale_Q30 = SKP_max_32( SKP_RSHIFT( ( 1 << 30 ), LOG2_INV_LPC_GAIN_LOW_THRES ), down_scale_Q30 );
+ down_scale_Q30 = SKP_LSHIFT( down_scale_Q30, LOG2_INV_LPC_GAIN_HIGH_THRES );
+
+ rand_Gain_Q15 = SKP_RSHIFT( SKP_SMULWB( down_scale_Q30, rand_Gain_Q15 ), 14 );
+ }
+ }
+
+ rand_seed = psPLC->rand_seed;
+ lag = SKP_RSHIFT_ROUND( psPLC->pitchL_Q8, 8 );
+ psDec->sLTP_buf_idx = psDec->frame_length;
+
+ /***************************/
+ /* LTP synthesis filtering */
+ /***************************/
+ sig_Q10_ptr = sig_Q10;
+ for( k = 0; k < NB_SUBFR; k++ ) {
+ /* Setup pointer */
+ pred_lag_ptr = &psDec->sLTP_Q16[ psDec->sLTP_buf_idx - lag + LTP_ORDER / 2 ];
+ for( i = 0; i < psDec->subfr_length; i++ ) {
+ rand_seed = SKP_RAND( rand_seed );
+ idx = SKP_RSHIFT( rand_seed, 25 ) & RAND_BUF_MASK;
+
+ /* Unrolled loop */
+ LTP_pred_Q14 = SKP_SMULWB( pred_lag_ptr[ 0 ], B_Q14[ 0 ] );
+ LTP_pred_Q14 = SKP_SMLAWB( LTP_pred_Q14, pred_lag_ptr[ -1 ], B_Q14[ 1 ] );
+ LTP_pred_Q14 = SKP_SMLAWB( LTP_pred_Q14, pred_lag_ptr[ -2 ], B_Q14[ 2 ] );
+ LTP_pred_Q14 = SKP_SMLAWB( LTP_pred_Q14, pred_lag_ptr[ -3 ], B_Q14[ 3 ] );
+ LTP_pred_Q14 = SKP_SMLAWB( LTP_pred_Q14, pred_lag_ptr[ -4 ], B_Q14[ 4 ] );
+ pred_lag_ptr++;
+
+ /* Generate LPC residual */
+ LPC_exc_Q10 = SKP_LSHIFT( SKP_SMULWB( rand_ptr[ idx ], rand_scale_Q14 ), 2 ); /* Random noise part */
+ LPC_exc_Q10 = SKP_ADD32( LPC_exc_Q10, SKP_RSHIFT_ROUND( LTP_pred_Q14, 4 ) ); /* Harmonic part */
+
+ /* Update states */
+ psDec->sLTP_Q16[ psDec->sLTP_buf_idx ] = SKP_LSHIFT( LPC_exc_Q10, 6 );
+ psDec->sLTP_buf_idx++;
+
+ /* Save LPC residual */
+ sig_Q10_ptr[ i ] = LPC_exc_Q10;
+ }
+ sig_Q10_ptr += psDec->subfr_length;
+ /* Gradually reduce LTP gain */
+ for( j = 0; j < LTP_ORDER; j++ ) {
+ B_Q14[ j ] = SKP_RSHIFT( SKP_SMULBB( harm_Gain_Q15, B_Q14[ j ] ), 15 );
+ }
+ /* Gradually reduce excitation gain */
+ rand_scale_Q14 = SKP_RSHIFT( SKP_SMULBB( rand_scale_Q14, rand_Gain_Q15 ), 15 );
+
+ /* Slowly increase pitch lag */
+ psPLC->pitchL_Q8 += SKP_SMULWB( psPLC->pitchL_Q8, PITCH_DRIFT_FAC_Q16 );
+ psPLC->pitchL_Q8 = SKP_min_32( psPLC->pitchL_Q8, SKP_LSHIFT( SKP_SMULBB( MAX_PITCH_LAG_MS, psDec->fs_kHz ), 8 ) );
+ lag = SKP_RSHIFT_ROUND( psPLC->pitchL_Q8, 8 );
+ }
+
+ /***************************/
+ /* LPC synthesis filtering */
+ /***************************/
+ sig_Q10_ptr = sig_Q10;
+ /* Preload LPC coeficients to array on stack. Gives small performance gain */
+ SKP_memcpy( A_Q12_tmp, psPLC->prevLPC_Q12, psDec->LPC_order * sizeof( SKP_int16 ) );
+ SKP_assert( psDec->LPC_order >= 10 ); /* check that unrolling works */
+ for( k = 0; k < NB_SUBFR; k++ ) {
+ for( i = 0; i < psDec->subfr_length; i++ ){
+ /* unrolled */
+ Atmp = *( ( SKP_int32* )&A_Q12_tmp[ 0 ] ); /* read two coefficients at once */
+ LPC_pred_Q10 = SKP_SMULWB( psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 1 ], Atmp );
+ LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 2 ], Atmp );
+ Atmp = *( ( SKP_int32* )&A_Q12_tmp[ 2 ] );
+ LPC_pred_Q10 = SKP_SMLAWB( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 3 ], Atmp );
+ LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 4 ], Atmp );
+ Atmp = *( ( SKP_int32* )&A_Q12_tmp[ 4 ] );
+ LPC_pred_Q10 = SKP_SMLAWB( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 5 ], Atmp );
+ LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 6 ], Atmp );
+ Atmp = *( ( SKP_int32* )&A_Q12_tmp[ 6 ] );
+ LPC_pred_Q10 = SKP_SMLAWB( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 7 ], Atmp );
+ LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 8 ], Atmp );
+ Atmp = *( ( SKP_int32* )&A_Q12_tmp[ 8 ] );
+ LPC_pred_Q10 = SKP_SMLAWB( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 9 ], Atmp );
+ LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 10 ], Atmp );
+ for( j = 10 ; j < psDec->LPC_order ; j+=2 ) {
+ Atmp = *( ( SKP_int32* )&A_Q12_tmp[ j ] );
+ LPC_pred_Q10 = SKP_SMLAWB( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 1 - j ], Atmp );
+ LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 2 - j ], Atmp );
+ }
+
+ /* Add prediction to LPC residual */
+ sig_Q10_ptr[ i ] = SKP_ADD32( sig_Q10_ptr[ i ], LPC_pred_Q10 );
+
+ /* Update states */
+ psDec->sLPC_Q14[ MAX_LPC_ORDER + i ] = SKP_LSHIFT( sig_Q10_ptr[ i ], 4 );
+ }
+ sig_Q10_ptr += psDec->subfr_length;
+ /* Update LPC filter state */
+ SKP_memcpy( psDec->sLPC_Q14, &psDec->sLPC_Q14[ psDec->subfr_length ], MAX_LPC_ORDER * sizeof( SKP_int32 ) );
+ }
+
+ /* Scale with Gain */
+ for( i = 0; i < psDec->frame_length; i++ ) {
+ signal[ i ] = ( SKP_int16 )SKP_SAT16( SKP_RSHIFT_ROUND( SKP_SMULWW( sig_Q10[ i ], psPLC->prevGain_Q16[ NB_SUBFR - 1 ] ), 10 ) );
+ }
+
+ /**************************************/
+ /* Update states */
+ /**************************************/
+ psPLC->rand_seed = rand_seed;
+ psPLC->randScale_Q14 = rand_scale_Q14;
+ for( i = 0; i < NB_SUBFR; i++ ) {
+ psDecCtrl->pitchL[ i ] = lag;
+ }
+}
+
+/* Glues concealed frames with new good recieved frames */
+void SKP_Silk_PLC_glue_frames(
+ SKP_Silk_decoder_state *psDec, /* I/O decoder state */
+ SKP_Silk_decoder_control *psDecCtrl, /* I/O Decoder control */
+ SKP_int16 signal[], /* I/O signal */
+ SKP_int length /* I length of residual */
+)
+{
+ SKP_int i, energy_shift;
+ SKP_int32 energy;
+ SKP_Silk_PLC_struct *psPLC;
+ psPLC = &psDec->sPLC;
+
+ if( psDec->lossCnt ) {
+ /* Calculate energy in concealed residual */
+ SKP_Silk_sum_sqr_shift( &psPLC->conc_energy, &psPLC->conc_energy_shift, signal, length );
+
+ psPLC->last_frame_lost = 1;
+ } else {
+ if( psDec->sPLC.last_frame_lost ) {
+ /* Calculate residual in decoded signal if last frame was lost */
+ SKP_Silk_sum_sqr_shift( &energy, &energy_shift, signal, length );
+
+ /* Normalize energies */
+ if( energy_shift > psPLC->conc_energy_shift ) {
+ psPLC->conc_energy = SKP_RSHIFT( psPLC->conc_energy, energy_shift - psPLC->conc_energy_shift );
+ } else if( energy_shift < psPLC->conc_energy_shift ) {
+ energy = SKP_RSHIFT( energy, psPLC->conc_energy_shift - energy_shift );
+ }
+
+ /* Fade in the energy difference */
+ if( energy > psPLC->conc_energy ) {
+ SKP_int32 frac_Q24, LZ;
+ SKP_int32 gain_Q12, slope_Q12;
+
+ LZ = SKP_Silk_CLZ32( psPLC->conc_energy );
+ LZ = LZ - 1;
+ psPLC->conc_energy = SKP_LSHIFT( psPLC->conc_energy, LZ );
+ energy = SKP_RSHIFT( energy, SKP_max_32( 24 - LZ, 0 ) );
+
+ frac_Q24 = SKP_DIV32( psPLC->conc_energy, SKP_max( energy, 1 ) );
+
+ gain_Q12 = SKP_Silk_SQRT_APPROX( frac_Q24 );
+ slope_Q12 = SKP_DIV32_16( ( 1 << 12 ) - gain_Q12, length );
+
+ for( i = 0; i < length; i++ ) {
+ signal[ i ] = SKP_RSHIFT( SKP_MUL( gain_Q12, signal[ i ] ), 12 );
+ gain_Q12 += slope_Q12;
+ gain_Q12 = SKP_min( gain_Q12, ( 1 << 12 ) );
+ }
+ }
+ }
+ psPLC->last_frame_lost = 0;
+
+ }
+}
--- /dev/null
+++ b/src/SKP_Silk_PLC.h
@@ -1,0 +1,79 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#ifndef SKP_SILK_PLC_FIX_H
+#define SKP_SILK_PLC_FIX_H
+
+#include "SKP_Silk_main_FIX.h"
+
+#define BWE_COEF_Q16 64880 /* 0.99 in Q16 */
+#define V_PITCH_GAIN_START_MIN_Q14 11469 /* 0.7 in Q14 */
+#define V_PITCH_GAIN_START_MAX_Q14 15565 /* 0.95 in Q14 */
+#define MAX_PITCH_LAG_MS 18
+#define SA_THRES_Q8 50
+#define USE_SINGLE_TAP 1
+#define RAND_BUF_SIZE 128
+#define RAND_BUF_MASK (RAND_BUF_SIZE - 1)
+#define LOG2_INV_LPC_GAIN_HIGH_THRES 4 /* 2^4 = 12 dB LPC gain */
+#define LOG2_INV_LPC_GAIN_LOW_THRES 8 /* 2^8 = 24 dB LPC gain */
+#define PITCH_DRIFT_FAC_Q16 655 /* 0.01 in Q16 */
+
+void SKP_Silk_PLC_Reset(
+ SKP_Silk_decoder_state *psDec /* I/O Decoder state */
+);
+
+void SKP_Silk_PLC(
+ SKP_Silk_decoder_state *psDec, /* I/O Decoder state */
+ SKP_Silk_decoder_control *psDecCtrl, /* I/O Decoder control */
+ SKP_int16 signal[], /* I/O signal */
+ SKP_int length, /* I length of residual */
+ SKP_int lost /* I Loss flag */
+);
+
+void SKP_Silk_PLC_update(
+ SKP_Silk_decoder_state *psDec, /* I/O Decoder state */
+ SKP_Silk_decoder_control *psDecCtrl, /* I/O Decoder control */
+ SKP_int16 signal[],
+ SKP_int length
+);
+
+void SKP_Silk_PLC_conceal(
+ SKP_Silk_decoder_state *psDec, /* I/O Decoder state */
+ SKP_Silk_decoder_control *psDecCtrl, /* I/O Decoder control */
+ SKP_int16 signal[], /* O LPC residual signal */
+ SKP_int length /* I length of signal */
+);
+
+void SKP_Silk_PLC_glue_frames(
+ SKP_Silk_decoder_state *psDec, /* I/O decoder state */
+ SKP_Silk_decoder_control *psDecCtrl, /* I/O Decoder control */
+ SKP_int16 signal[], /* I/O signal */
+ SKP_int length /* I length of signal */
+);
+
+#endif
+
--- /dev/null
+++ b/src/SKP_Silk_SigProc_FIX.h
@@ -1,0 +1,796 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#ifndef _SKP_SILK_SIGPROC_FIX_H_
+#define _SKP_SILK_SIGPROC_FIX_H_
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#define SigProc_MAX_ORDER_LPC 16 /* max order of the LPC analysis in schur() and k2a() */
+#define SigProc_MAX_CORRELATION_LENGTH 640 /* max input length to the correlation */
+#include "SKP_Silk_typedef.h"
+#include <string.h>
+#include <stdlib.h> /* for abs() */
+#include "SKP_Silk_macros.h"
+#include "SKP_Silk_resample_rom.h"
+
+
+
+/********************************************************************/
+/* SIGNAL PROCESSING FUNCTIONS */
+/********************************************************************/
+
+/* downsample by a factor 2 */
+void SKP_Silk_resample_1_2(
+ const SKP_int16 *in, /* I: 16 kHz signal [2*len] */
+ SKP_int32 *S, /* I/O: State vector [6] */
+ SKP_int16 *out, /* O: 8 kHz signal [len] */
+ SKP_int32 *scratch, /* I: Scratch memory [4*len] */
+ const SKP_int32 len /* I: Number of OUTPUT samples */
+);
+
+/*!
+ * downsample by a factor 2, coarser (good for resampling audio)
+ */
+void SKP_Silk_resample_1_2_coarse(
+ const SKP_int16 *in, /* I: 16 kHz signal [2*len] */
+ SKP_int32 *S, /* I/O: state vector [4] */
+ SKP_int16 *out, /* O: 8 kHz signal [len] */
+ SKP_int32 *scratch, /* I: scratch memory [3*len] */
+ const SKP_int32 len /* I: number of OUTPUT samples */
+);
+
+/*!
+ * downsample by a factor 2, coarsest (good for signals that are already oversampled, or for analysis purposes)
+ */
+void SKP_Silk_resample_1_2_coarsest(
+ const SKP_int16 *in, /* I: 16 kHz signal [2*len] */
+ SKP_int32 *S, /* I/O: State vector [2] */
+ SKP_int16 *out, /* O: 8 kHz signal [len] */
+ SKP_int32 *scratch, /* I: Scratch memory [3*len] */
+ const SKP_int32 len /* I: Number of OUTPUT samples */
+);
+
+/*!
+ * upsample by a factor 2, coarser (good for resampling audio)
+ */
+void SKP_Silk_resample_2_1_coarse(
+ const SKP_int16 *in, /* I: 8 kHz signal [len] */
+ SKP_int32 *S, /* I/O: State vector [4] */
+ SKP_int16 *out, /* O: 16 kHz signal [2*len] */
+ SKP_int32 *scratch, /* I: Scratch memory [3*len] */
+ const SKP_int32 len /* I: Number of INPUT samples */
+);
+
+/*!
+ * Resamples by a factor 1/3
+ */
+void SKP_Silk_resample_1_3(
+ SKP_int16 *out, /* O: Fs_low signal [inLen/3] */
+ SKP_int32 *S, /* I/O: State vector [7] */
+ const SKP_int16 *in, /* I: Fs_high signal [inLen] */
+ const SKP_int32 inLen /* I: Input length, must be a multiple of 3 */
+);
+
+/*!
+ * Resamples by a factor 3/1
+ */
+void SKP_Silk_resample_3_1(
+ SKP_int16 *out, /* O: Fs_high signal [inLen*3] */
+ SKP_int32 *S, /* I/O: State vector [7] */
+ const SKP_int16 *in, /* I: Fs_low signal [inLen] */
+ const SKP_int32 inLen /* I: Input length */
+);
+
+/*!
+ * Resamples by a factor 2/3
+ */
+void SKP_Silk_resample_2_3(
+ SKP_int16 *out, /* O: Fs_low signal [inLen * 2/3] */
+ SKP_int32 *S, /* I/O: State vector [7+4] */
+ const SKP_int16 *in, /* I: Fs_high signal [inLen] */
+ const SKP_int inLen /* I: Input length, must be a multiple of 3 */
+);
+
+/*!
+ * Resamples by a factor 3/2
+ */
+void SKP_Silk_resample_3_2(
+ SKP_int16 *out, /* O: Fs_high signal [inLen*3/2] */
+ SKP_int32 *S, /* I/O: State vector [7+4] */
+ const SKP_int16 *in, /* I: Fs_low signal [inLen] */
+ SKP_int inLen /* I: Input length, must be a multiple of 2 */
+);
+
+/*!
+ * Resamples by a factor 4/3
+ */
+void SKP_Silk_resample_4_3(
+ SKP_int16 *out, /* O: Fs_low signal [inLen * 4/3] */
+ SKP_int32 *S, /* I/O: State vector [7+4+4] */
+ const SKP_int16 *in, /* I: Fs_high signal [inLen] */
+ const SKP_int inLen /* I: input length, must be a multiple of 3 */
+);
+
+/*!
+ * Resamples by a factor 3/4
+ */
+ void SKP_Silk_resample_3_4(
+ SKP_int16 *out, /* O: Fs_high signal [inLen*3/4] */
+ SKP_int32 *S, /* I/O: State vector [7+2+6] */
+ const SKP_int16 *in, /* I: Fs_low signal [inLen] */
+ SKP_int inLen /* I: Input length, must be a multiple of 4 */
+);
+
+/*!
+ * resample with a factor 2/3 coarse
+ */
+void SKP_Silk_resample_2_3_coarse(
+ SKP_int16 *out, /* O: Output signal */
+ SKP_int16 *S, /* I/O: Resampler state [ SigProc_Resample_2_3_coarse_NUM_FIR_COEFS - 1 ] */
+ const SKP_int16 *in, /* I: Input signal */
+ const SKP_int frameLenIn, /* I: Number of input samples */
+ SKP_int16 *scratch /* I: Scratch memory [ frameLenIn + SigProc_Resample_2_3_coarse_NUM_FIR_COEFS - 1 ] */
+);
+
+/*!
+ * resample with a factor 2/3 coarsest
+ */
+void SKP_Silk_resample_2_3_coarsest(
+ SKP_int16 *out, /* O: Output signal */
+ SKP_int16 *S, /* I/O: Resampler state [ SigProc_Resample_2_3_coarsest_NUM_FIR_COEFS - 1 ] */
+ const SKP_int16 *in, /* I: Input signal */
+ const SKP_int frameLenIn, /* I: Number of input samples */
+ SKP_int16 *scratch /* I: Scratch memory [ frameLenIn + SigProc_Resample_2_3_coarsest_NUM_FIR_COEFS - 1 ] */
+);
+
+/*!
+ * First order low-pass filter, with input as SKP_int16, running at 48 kHz
+ */
+void SKP_Silk_lowpass_short(
+ const SKP_int16 *in, /* I: Q15 48 kHz signal; [len] */
+ SKP_int32 *S, /* I/O: Q25 state; length = 1 */
+ SKP_int32 *out, /* O: Q25 48 kHz signal; [len] */
+ const SKP_int32 len /* O: Signal length */
+);
+
+/*!
+ * First order low-pass filter, with input as SKP_int32, running at 48 kHz
+ */
+void SKP_Silk_lowpass_int(
+ const SKP_int32 *in, /* I: Q25 48 kHz signal; length = len */
+ SKP_int32 *S, /* I/O: Q25 state; length = 1 */
+ SKP_int32 *out, /* O: Q25 48 kHz signal; length = len */
+ const SKP_int32 len /* I: Number of samples */
+);
+
+/*!
+ * First-order allpass filter
+ */
+void SKP_Silk_allpass_int(
+ const SKP_int32 *in, /* I: Q25 input signal [len] */
+ SKP_int32 *S, /* I/O: Q25 state [1] */
+ SKP_int A, /* I: Q15 coefficient (0 <= A < 32768) */
+ SKP_int32 *out, /* O: Q25 output signal [len] */
+ const SKP_int32 len /* I: Number of samples */
+);
+
+/*!
+ * second order ARMA filter
+ * can handle (slowly) varying coefficients
+ */
+void SKP_Silk_biquad(
+ const SKP_int16 *in, /* I: input signal */
+ const SKP_int16 *B, /* I: MA coefficients, Q13 [3] */
+ const SKP_int16 *A, /* I: AR coefficients, Q13 [2] */
+ SKP_int32 *S, /* I/O: state vector [2] */
+ SKP_int16 *out, /* O: output signal */
+ const SKP_int32 len /* I: signal length */
+);
+/*!
+ * second order ARMA filter;
+ * slower than biquad() but uses more precise coefficients
+ * can handle (slowly) varying coefficients
+ */
+void SKP_Silk_biquad_alt(
+ const SKP_int16 *in, /* I: input signal */
+ const SKP_int32 *B_Q28, /* I: MA coefficients [3] */
+ const SKP_int32 *A_Q28, /* I: AR coefficients [2] */
+ SKP_int32 *S, /* I/O: state vector [2] */
+ SKP_int16 *out, /* O: output signal */
+ const SKP_int32 len /* I: signal length (must be even) */
+);
+
+/*!
+ * variable order MA filter. Prediction error filter implementation. Coeficients negated and starting with coef to x[n - 1]
+ */
+void SKP_Silk_MA_Prediction(
+ const SKP_int16 *in, /* I: Input signal */
+ const SKP_int16 *B, /* I: MA prediction coefficients, Q12 [order] */
+ SKP_int32 *S, /* I/O: State vector [order] */
+ SKP_int16 *out, /* O: Output signal */
+ const SKP_int32 len, /* I: Signal length */
+ const SKP_int32 order /* I: Filter order */
+);
+
+void SKP_Silk_MA_Prediction_Q13(
+ const SKP_int16 *in, /* I: input signal */
+ const SKP_int16 *B, /* I: MA prediction coefficients, Q13 [order] */
+ SKP_int32 *S, /* I/O: state vector [order] */
+ SKP_int16 *out, /* O: output signal */
+ SKP_int32 len, /* I: signal length */
+ SKP_int32 order /* I: filter order */
+);
+
+/*!
+ * 16th order AR filter for LPC synthesis, coefficients are in Q12
+ */
+void SKP_Silk_LPC_synthesis_order16(
+ const SKP_int16 *in, /* I: excitation signal */
+ const SKP_int16 *A_Q12, /* I: AR coefficients [16], between -8_Q0 and 8_Q0 */
+ const SKP_int32 Gain_Q26, /* I: gain */
+ SKP_int32 *S, /* I/O: state vector [16] */
+ SKP_int16 *out, /* O: output signal */
+ const SKP_int32 len /* I: signal length, must be multiple of 16 */
+);
+
+/* variable order MA prediction error filter. */
+/* Inverse filter of SKP_Silk_LPC_synthesis_filter */
+void SKP_Silk_LPC_analysis_filter(
+ const SKP_int16 *in, /* I: Input signal */
+ const SKP_int16 *B, /* I: MA prediction coefficients, Q12 [order] */
+ SKP_int16 *S, /* I/O: State vector [order] */
+ SKP_int16 *out, /* O: Output signal */
+ const SKP_int32 len, /* I: Signal length */
+ const SKP_int32 Order /* I: Filter order */
+);
+
+/* even order AR filter */
+void SKP_Silk_LPC_synthesis_filter(
+ const SKP_int16 *in, /* I: excitation signal */
+ const SKP_int16 *A_Q12, /* I: AR coefficients [Order], between -8_Q0 and 8_Q0 */
+ const SKP_int32 Gain_Q26, /* I: gain */
+ SKP_int32 *S, /* I/O: state vector [Order] */
+ SKP_int16 *out, /* O: output signal */
+ const SKP_int32 len, /* I: signal length */
+ const SKP_int Order /* I: filter order, must be even */
+);
+
+/* Chirp (bandwidth expand) LP AR filter */
+void SKP_Silk_bwexpander(
+ SKP_int16 *ar, /* I/O AR filter to be expanded (without leading 1) */
+ const SKP_int d, /* I Length of ar */
+ SKP_int32 chirp_Q16 /* I Chirp factor (typically in the range 0 to 1) */
+);
+
+/* Chirp (bandwidth expand) LP AR filter */
+void SKP_Silk_bwexpander_32(
+ SKP_int32 *ar, /* I/O AR filter to be expanded (without leading 1) */
+ const SKP_int d, /* I Length of ar */
+ SKP_int32 chirp_Q16 /* I Chirp factor in Q16 */
+);
+
+/* Compute inverse of LPC prediction gain, and */
+/* test if LPC coefficients are stable (all poles within unit circle) */
+SKP_int SKP_Silk_LPC_inverse_pred_gain( /* O: Returns 1 if unstable, otherwise 0 */
+ SKP_int32 *invGain_Q30, /* O: Inverse prediction gain, Q30 energy domain */
+ const SKP_int16 *A_Q12, /* I: Prediction coefficients, Q12 [order] */
+ const SKP_int order /* I: Prediction order */
+);
+
+SKP_int SKP_Silk_LPC_inverse_pred_gain_Q13( /* O: returns 1 if unstable, otherwise 0 */
+ SKP_int32 *invGain_Q30, /* O: Inverse prediction gain, Q30 energy domain */
+ const SKP_int16 *A_Q13, /* I: Prediction coefficients, Q13 [order] */
+ const SKP_int order /* I: Prediction order */
+);
+
+/* split signal in two decimated bands using first-order allpass filters */
+void SKP_Silk_ana_filt_bank_1(
+ const SKP_int16 *in, /* I: Input signal [N] */
+ SKP_int32 *S, /* I/O: State vector [2] */
+ SKP_int16 *outL, /* O: Low band [N/2] */
+ SKP_int16 *outH, /* O: High band [N/2] */
+ SKP_int32 *scratch, /* I: Scratch memory [3*N/2] */
+ const SKP_int32 N /* I: Number of input samples */
+);
+
+/********************************************************************/
+/* SCALAR FUNCTIONS */
+/********************************************************************/
+
+/* approximation of 128 * log2() (exact inverse of approx 2^() below) */
+/* convert input to a log scale */
+SKP_int32 SKP_Silk_lin2log(const SKP_int32 inLin); /* I: input in linear scale */
+
+/* Approximation of a sigmoid function */
+SKP_int SKP_Silk_sigm_Q15(SKP_int in_Q5);
+
+/* approximation of 2^() (exact inverse of approx log2() above) */
+/* convert input to a linear scale */
+SKP_int32 SKP_Silk_log2lin(const SKP_int32 inLog_Q7); /* I: input on log scale */
+
+/* Function that returns the maximum absolut value of the input vector */
+SKP_int16 SKP_Silk_int16_array_maxabs( /* O Maximum absolute value, max: 2^15-1 */
+ const SKP_int16 *vec, /* I Input vector [len] */
+ const SKP_int32 len /* I Length of input vector */
+);
+
+/* Compute number of bits to right shift the sum of squares of a vector */
+/* of int16s to make it fit in an int32 */
+void SKP_Silk_sum_sqr_shift(
+ SKP_int32 *energy, /* O Energy of x, after shifting to the right */
+ SKP_int *shift, /* O Number of bits right shift applied to energy */
+ const SKP_int16 *x, /* I Input vector */
+ SKP_int len /* I Length of input vector */
+);
+
+/* Calculates the reflection coefficients from the correlation sequence */
+/* Faster than schur64(), but much less accurate. */
+/* Uses SMLAWB(), requiring armv5E and higher. */
+void SKP_Silk_schur(
+ SKP_int16 *rc_Q15, /* O: reflection coefficients [order] Q15 */
+ const SKP_int32 *c, /* I: correlations [order+1] */
+ const SKP_int32 order /* I: prediction order */
+);
+
+/* Calculates the reflection coefficients from the correlation sequence */
+/* Slower than schur(), but more accurate. */
+/* Uses SMULL(), available on armv4 */
+SKP_int32 SKP_Silk_schur64( /* O: returns residual energy */
+ SKP_int32 rc_Q16[], /* O: Reflection coefficients [order] Q16 */
+ const SKP_int32 c[], /* I: Correlations [order+1] */
+ SKP_int32 order /* I: Prediction order */
+);
+
+/* Step up function, converts reflection coefficients to prediction coefficients */
+void SKP_Silk_k2a(
+ SKP_int32 *A_Q24, /* O: Prediction coefficients [order] Q24 */
+ const SKP_int16 *rc_Q15, /* I: Reflection coefficients [order] Q15 */
+ const SKP_int32 order /* I: Prediction order */
+);
+
+/* Step up function, converts reflection coefficients to prediction coefficients */
+void SKP_Silk_k2a_Q16(
+ SKP_int32 *A_Q24, /* O: Prediction coefficients [order] Q24 */
+ const SKP_int32 *rc_Q16, /* I: Reflection coefficients [order] Q16 */
+ const SKP_int32 order /* I: Prediction order */
+);
+
+/* Apply sine window to signal vector. */
+/* Window types: */
+/* 0 -> sine window from 0 to pi */
+/* 1 -> sine window from 0 to pi/2 */
+/* 2 -> sine window from pi/2 to pi */
+/* every other sample of window is linearly interpolated, for speed */
+void SKP_Silk_apply_sine_window(
+ SKP_int16 px_win[], /* O Pointer to windowed signal */
+ const SKP_int16 px[], /* I Pointer to input signal */
+ const SKP_int win_type, /* I Selects a window type */
+ const SKP_int length /* I Window length, multiple of 4 */
+);
+
+/* Compute autocorrelation */
+void SKP_Silk_autocorr(
+ SKP_int32 *results, /* O Result (length correlationCount) */
+ SKP_int32 *scale, /* O Scaling of the correlation vector */
+ const SKP_int16 *inputData, /* I Input data to correlate */
+ const SKP_int inputDataSize, /* I Length of input */
+ const SKP_int correlationCount /* I Number of correlation taps to compute */
+);
+
+/* Pitch estimator */
+#define SigProc_PITCH_EST_MIN_COMPLEX 0
+#define SigProc_PITCH_EST_MID_COMPLEX 1
+#define SigProc_PITCH_EST_MAX_COMPLEX 2
+
+void SKP_Silk_decode_pitch(
+ SKP_int lagIndex, /* I */
+ SKP_int contourIndex, /* O */
+ SKP_int pitch_lags[], /* O 4 pitch values */
+ SKP_int Fs_kHz /* I sampling frequency (kHz) */
+);
+
+SKP_int SKP_Silk_pitch_analysis_core( /* O Voicing estimate: 0 voiced, 1 unvoiced */
+ const SKP_int16 *signal, /* I Signal of length PITCH_EST_FRAME_LENGTH_MS*Fs_kHz */
+ SKP_int *pitch_out, /* O 4 pitch lag values */
+ SKP_int *lagIndex, /* O Lag Index */
+ SKP_int *contourIndex, /* O Pitch contour Index */
+ SKP_int *LTPCorr_Q15, /* I/O Normalized correlation; input: value from previous frame */
+ SKP_int prevLag, /* I Last lag of previous frame; set to zero is unvoiced */
+ const SKP_int32 search_thres1_Q16, /* I First stage threshold for lag candidates 0 - 1 */
+ const SKP_int search_thres2_Q15, /* I Final threshold for lag candidates 0 - 1 */
+ const SKP_int Fs_kHz, /* I Sample frequency (kHz) */
+ const SKP_int complexity /* I Complexity setting, 0-2, where 2 is highest */
+);
+
+/* parameter defining the size and accuracy of the piecewise linear */
+/* cosine approximatin table. */
+
+#define LSF_COS_TAB_SZ_FIX 128
+/* rom table with cosine values */
+extern const SKP_int SKP_Silk_LSFCosTab_FIX_Q12[ LSF_COS_TAB_SZ_FIX + 1 ];
+
+void SKP_Silk_LPC_fit(
+ SKP_int16 *a_QQ, /* O stabilized LPC vector, Q(24-rshift) [L] */
+ SKP_int32 *a_Q24, /* I LPC vector [L] */
+ const SKP_int QQ, /* I Q domain of output LPC vector */
+ const SKP_int L /* I Number of LPC parameters in the input vector */
+);
+
+/* Compute Normalized Line Spectral Frequencies (NLSFs) from whitening filter coefficients */
+/* If not all roots are found, the a_Q16 coefficients are bandwidth expanded until convergence. */
+void SKP_Silk_A2NLSF(
+ SKP_int *NLSF, /* O Normalized Line Spectral Frequencies, Q15 (0 - (2^15-1)), [d] */
+ SKP_int32 *a_Q16, /* I/O Monic whitening filter coefficients in Q16 [d] */
+ const SKP_int d /* I Filter order (must be even) */
+);
+
+/* compute whitening filter coefficients from normalized line spectral frequencies */
+void SKP_Silk_NLSF2A(
+ SKP_int16 *a, /* o monic whitening filter coefficients in Q12, [d] */
+ const SKP_int *NLSF, /* i normalized line spectral frequencies in Q15, [d] */
+ const SKP_int d /* i filter order (should be even) */
+);
+
+void SKP_Silk_insertion_sort_increasing(
+ SKP_int32 *a, /* I/O Unsorted / Sorted vector */
+ SKP_int *index, /* O: Index vector for the sorted elements */
+ const SKP_int L, /* I: Vector length */
+ const SKP_int K /* I: Number of correctly sorted positions */
+);
+
+void SKP_Silk_insertion_sort_decreasing(
+ SKP_int *a, /* I/O: Unsorted / Sorted vector */
+ SKP_int *index, /* O: Index vector for the sorted elements */
+ const SKP_int L, /* I: Vector length */
+ const SKP_int K /* I: Number of correctly sorted positions */
+);
+
+void SKP_Silk_insertion_sort_decreasing_int16(
+ SKP_int16 *a, /* I/O: Unsorted / Sorted vector */
+ SKP_int *index, /* O: Index vector for the sorted elements */
+ const SKP_int L, /* I: Vector length */
+ const SKP_int K /* I: Number of correctly sorted positions */
+);
+
+void SKP_Silk_insertion_sort_increasing_all_values(
+ SKP_int *a, /* I/O: Unsorted / Sorted vector */
+ const SKP_int L /* I: Vector length */
+);
+
+/* NLSF stabilizer, for a single input data vector */
+void SKP_Silk_NLSF_stabilize(
+ SKP_int *NLSF_Q15, /* I/O: Unstable/stabilized normalized LSF vector in Q15 [L] */
+ const SKP_int *NDeltaMin_Q15, /* I: Normalized delta min vector in Q15, NDeltaMin_Q15[L] must be >= 1 [L+1] */
+ const SKP_int L /* I: Number of NLSF parameters in the input vector */
+);
+
+/* NLSF stabilizer, over multiple input column data vectors */
+void SKP_Silk_NLSF_stabilize_multi(
+ SKP_int *NLSF_Q15, /* I/O: Unstable/stabilized normalized LSF vectors in Q15 [LxN] */
+ const SKP_int *NDeltaMin_Q15, /* I: Normalized delta min vector in Q15, NDeltaMin_Q15[L] must be >= 1 [L+1] */
+ const SKP_int N, /* I: Number of input vectors to be stabilized */
+ const SKP_int L /* I: NLSF vector dimension */
+);
+
+/* Laroia low complexity NLSF weights */
+void SKP_Silk_NLSF_VQ_weights_laroia(
+ SKP_int *pNLSFW_Q6, /* O: Pointer to input vector weights [D x 1] */
+ const SKP_int *pNLSF_Q15, /* I: Pointer to input vector [D x 1] */
+ const SKP_int D /* I: Input vector dimension (even) */
+);
+
+/* Compute reflection coefficients from input signal */
+void SKP_Silk_burg_modified(
+ SKP_int32 *res_nrg, /* O residual energy */
+ SKP_int *res_nrgQ, /* O residual energy Q value */
+ SKP_int32 A_Q16[], /* O prediction coefficients (length order) */
+ const SKP_int16 x[], /* I input signal, length: nb_subfr * ( D + subfr_length ) */
+ const SKP_int subfr_length, /* I input signal subframe length (including D preceeding samples) */
+ const SKP_int nb_subfr, /* I number of subframes stacked in x */
+ const SKP_int32 WhiteNoiseFrac_Q32, /* I fraction added to zero-lag autocorrelation */
+ const SKP_int D /* I order */
+);
+
+/* Multiply a vector by a constant */
+void SKP_Silk_scale_vector16_Q14(
+ SKP_int16 *data1,
+ SKP_int gain_Q14, /* Gain in Q14 */
+ SKP_int dataSize
+);
+
+/* Copy and multiply a vector by a constant */
+void SKP_Silk_scale_copy_vector16(
+ SKP_int16 *data_out,
+ const SKP_int16 *data_in,
+ SKP_int32 gain_Q16, /* I: gain in Q16 */
+ const SKP_int dataSize /* I: length */
+);
+
+void SKP_Silk_scale_vector32_16_Q14(
+ SKP_int32 *data1, /* I/O: Q0/Q0 */
+ SKP_int gain_Q14, /* I: Q14 */
+ SKP_int dataSize /* I: length */
+);
+
+/* Multiply a vector by a constant, does not saturate output data */
+void SKP_Silk_scale_vector32_Q16(
+ SKP_int32 *data1, /* I/O: Q0/Q0 */
+ SKP_int32 gain_Q16, /* I: gain in Q16 ( SKP_int16_MIN <= gain_Q16 <= SKP_int16_MAX + 65536 ) */
+ const SKP_int dataSize /* I: length */
+);
+
+/* Some for the LTP related function requires Q26 to work.*/
+void SKP_Silk_scale_vector32_Q26_lshift_18(
+ SKP_int32 *data1, /* I/O: Q0/Q18 */
+ SKP_int32 gain_Q26, /* I: Q26 */
+ SKP_int dataSize /* I: length */
+);
+
+/********************************************************************/
+/* INLINE ARM MATH */
+/********************************************************************/
+
+/* return sum(inVec1[i]*inVec2[i]) */
+/* inVec1 and inVec2 should be increasing ordered, and starting address should be 4 byte aligned. (a factor of 4)*/
+SKP_int32 SKP_Silk_inner_prod_aligned(
+ const SKP_int16* const inVec1, /* I input vector 1 */
+ const SKP_int16* const inVec2, /* I input vector 2 */
+ const SKP_int len /* I vector lengths */
+);
+
+SKP_int32 SKP_Silk_inner_prod16_aligned_sat(
+ const SKP_int16* const inVec1, /* I input vector 1 */
+ const SKP_int16* const inVec2, /* I input vector 2 */
+ const SKP_int len /* I vector lengths */
+);
+
+SKP_int64 SKP_Silk_inner_prod_aligned_64(
+ const SKP_int32 *inVec1, /* I input vector 1 */
+ const SKP_int32 *inVec2, /* I input vector 2 */
+ const SKP_int len /* I vector lengths */
+);
+
+SKP_int64 SKP_Silk_inner_prod16_aligned_64(
+ const SKP_int16 *inVec1, /* I input vector 1 */
+ const SKP_int16 *inVec2, /* I input vector 2 */
+ const SKP_int len /* I vector lengths */
+);
+/********************************************************************/
+/* MACROS */
+/********************************************************************/
+
+/* Define 4-byte aligned array of SKP_int16 */
+#define SKP_array_of_int16_4_byte_aligned( arrayName, nElements ) \
+ SKP_int32 dummy_int32 ## arrayName; \
+ SKP_int16 arrayName[ (nElements) ]
+
+/* Useful Macros that can be adjusted to other platforms */
+#define SKP_memcpy(a, b, c) memcpy((a), (b), (c)) /* Dest, Src, ByteCount */
+#define SKP_memset(a, b, c) memset((a), (b), (c)) /* Dest, value, ByteCount */
+#define SKP_memmove(a, b, c) memmove((a), (b), (c)) /* Dest, Src, ByteCount */
+/* fixed point macros */
+
+// (a32 * b32) output have to be 32bit int
+#define SKP_MUL(a32, b32) ((a32) * (b32))
+
+// (a32 * b32) output have to be 32bit uint
+#define SKP_MUL_uint(a32, b32) SKP_MUL(a32, b32)
+
+// a32 + (b32 * c32) output have to be 32bit int
+#define SKP_MLA(a32, b32, c32) SKP_ADD32((a32),((b32) * (c32)))
+
+// a32 + (b32 * c32) output have to be 32bit uint
+#define SKP_MLA_uint(a32, b32, c32) SKP_MLA(a32, b32, c32)
+
+// ((a32 >> 16) * (b32 >> 16)) output have to be 32bit int
+#define SKP_SMULTT(a32, b32) (((a32) >> 16) * ((b32) >> 16))
+
+// a32 + ((a32 >> 16) * (b32 >> 16)) output have to be 32bit int
+#define SKP_SMLATT(a32, b32, c32) SKP_ADD32((a32),((b32) >> 16) * ((c32) >> 16))
+
+#define SKP_SMLALBB(a64, b16, c16) SKP_ADD64((a64),(SKP_int64)((SKP_int32)(b16) * (SKP_int32)(c16)))
+
+// (a32 * b32)
+#define SKP_SMULL(a32, b32) ((SKP_int64)(a32) * /*(SKP_int64)*/(b32))
+
+// multiply-accumulate macros that allow overflow in the addition (ie, no asserts in debug mode)
+#define SKP_MLA_ovflw(a32, b32, c32) SKP_MLA(a32, b32, c32)
+#ifndef SKP_SMLABB_ovflw
+# define SKP_SMLABB_ovflw(a32, b32, c32) SKP_SMLABB(a32, b32, c32)
+#endif
+#define SKP_SMLABT_ovflw(a32, b32, c32) SKP_SMLABT(a32, b32, c32)
+#define SKP_SMLATT_ovflw(a32, b32, c32) SKP_SMLATT(a32, b32, c32)
+#define SKP_SMLAWB_ovflw(a32, b32, c32) SKP_SMLAWB(a32, b32, c32)
+#define SKP_SMLAWT_ovflw(a32, b32, c32) SKP_SMLAWT(a32, b32, c32)
+
+#define SKP_DIV64_32(a64, b32) ((a64)/(b32)) /* TODO: rewrite it as a set of SKP_DIV32.*/
+
+#define SKP_DIV32_16(a32, b16) ((SKP_int32)((a32) / (b16)))
+#define SKP_DIV32(a32, b32) ((SKP_int32)((a32) / (b32)))
+
+// These macros enables checking for overflow in SKP_Silk_API_Debug.h
+#define SKP_ADD16(a, b) ((a) + (b))
+#define SKP_ADD32(a, b) ((a) + (b))
+#define SKP_ADD64(a, b) ((a) + (b))
+
+#define SKP_SUB16(a, b) ((a) - (b))
+#define SKP_SUB32(a, b) ((a) - (b))
+#define SKP_SUB64(a, b) ((a) - (b))
+
+#define SKP_SAT8(a) ((a) > SKP_int8_MAX ? SKP_int8_MAX : \
+ ((a) < SKP_int8_MIN ? SKP_int8_MIN : (a)))
+#define SKP_SAT16(a) ((a) > SKP_int16_MAX ? SKP_int16_MAX : \
+ ((a) < SKP_int16_MIN ? SKP_int16_MIN : (a)))
+#define SKP_SAT32(a) ((a) > SKP_int32_MAX ? SKP_int32_MAX : \
+ ((a) < SKP_int32_MIN ? SKP_int32_MIN : (a)))
+
+#define SKP_CHECK_FIT8(a) (a)
+#define SKP_CHECK_FIT16(a) (a)
+#define SKP_CHECK_FIT32(a) (a)
+
+#define SKP_ADD_SAT16(a, b) (SKP_int16)SKP_SAT16( SKP_ADD32( (SKP_int32)(a), (b) ) )
+#define SKP_ADD_SAT64(a, b) ((((a) + (b)) & 0x8000000000000000LL) == 0 ? \
+ ((((a) & (b)) & 0x8000000000000000LL) != 0 ? SKP_int64_MIN : (a)+(b)) : \
+ ((((a) | (b)) & 0x8000000000000000LL) == 0 ? SKP_int64_MAX : (a)+(b)) )
+
+#define SKP_SUB_SAT16(a, b) (SKP_int16)SKP_SAT16( SKP_SUB32( (SKP_int32)(a), (b) ) )
+#define SKP_SUB_SAT64(a, b) ((((a)-(b)) & 0x8000000000000000LL) == 0 ? \
+ (( (a) & ((b)^0x8000000000000000LL) & 0x8000000000000000LL) ? SKP_int64_MIN : (a)-(b)) : \
+ ((((a)^0x8000000000000000LL) & (b) & 0x8000000000000000LL) ? SKP_int64_MAX : (a)-(b)) )
+
+/* Saturation for positive input values */
+#define SKP_POS_SAT32(a) ((a) > SKP_int32_MAX ? SKP_int32_MAX : (a))
+
+/* Add with saturation for positive input values */
+#define SKP_ADD_POS_SAT8(a, b) ((((a)+(b)) & 0x80) ? SKP_int8_MAX : ((a)+(b)))
+#define SKP_ADD_POS_SAT16(a, b) ((((a)+(b)) & 0x8000) ? SKP_int16_MAX : ((a)+(b)))
+#define SKP_ADD_POS_SAT32(a, b) ((((a)+(b)) & 0x80000000) ? SKP_int32_MAX : ((a)+(b)))
+#define SKP_ADD_POS_SAT64(a, b) ((((a)+(b)) & 0x8000000000000000LL) ? SKP_int64_MAX : ((a)+(b)))
+
+#define SKP_LSHIFT8(a, shift) ((a)<<(shift)) // shift >= 0, shift < 8
+#define SKP_LSHIFT16(a, shift) ((a)<<(shift)) // shift >= 0, shift < 16
+#define SKP_LSHIFT32(a, shift) ((a)<<(shift)) // shift >= 0, shift < 32
+#define SKP_LSHIFT64(a, shift) ((a)<<(shift)) // shift >= 0, shift < 64
+#define SKP_LSHIFT(a, shift) SKP_LSHIFT32(a, shift) // shift >= 0, shift < 32
+
+#define SKP_RSHIFT8(a, shift) ((a)>>(shift)) // shift >= 0, shift < 8
+#define SKP_RSHIFT16(a, shift) ((a)>>(shift)) // shift >= 0, shift < 16
+#define SKP_RSHIFT32(a, shift) ((a)>>(shift)) // shift >= 0, shift < 32
+#define SKP_RSHIFT64(a, shift) ((a)>>(shift)) // shift >= 0, shift < 64
+#define SKP_RSHIFT(a, shift) SKP_RSHIFT32(a, shift) // shift >= 0, shift < 32
+
+/* saturates before shifting */
+#define SKP_LSHIFT_SAT16(a, shift) (SKP_LSHIFT16( SKP_LIMIT( (a), SKP_RSHIFT16( SKP_int16_MIN, (shift) ), \
+ SKP_RSHIFT16( SKP_int16_MAX, (shift) ) ), (shift) ))
+#define SKP_LSHIFT_SAT32(a, shift) (SKP_LSHIFT32( SKP_LIMIT( (a), SKP_RSHIFT32( SKP_int32_MIN, (shift) ), \
+ SKP_RSHIFT32( SKP_int32_MAX, (shift) ) ), (shift) ))
+
+#define SKP_LSHIFT_ovflw(a, shift) ((a)<<(shift)) // shift >= 0, allowed to overflow
+#define SKP_LSHIFT_uint(a, shift) ((a)<<(shift)) // shift >= 0
+#define SKP_RSHIFT_uint(a, shift) ((a)>>(shift)) // shift >= 0
+
+#define SKP_ADD_LSHIFT(a, b, shift) ((a) + SKP_LSHIFT((b), (shift))) // shift >= 0
+#define SKP_ADD_LSHIFT32(a, b, shift) SKP_ADD32((a), SKP_LSHIFT32((b), (shift))) // shift >= 0
+#define SKP_ADD_LSHIFT_uint(a, b, shift) ((a) + SKP_LSHIFT_uint((b), (shift))) // shift >= 0
+#define SKP_ADD_RSHIFT(a, b, shift) ((a) + SKP_RSHIFT((b), (shift))) // shift >= 0
+#define SKP_ADD_RSHIFT32(a, b, shift) SKP_ADD32((a), SKP_RSHIFT32((b), (shift))) // shift >= 0
+#define SKP_ADD_RSHIFT_uint(a, b, shift) ((a) + SKP_RSHIFT_uint((b), (shift))) // shift >= 0
+#define SKP_SUB_LSHIFT32(a, b, shift) SKP_SUB32((a), SKP_LSHIFT32((b), (shift))) // shift >= 0
+#define SKP_SUB_RSHIFT32(a, b, shift) SKP_SUB32((a), SKP_RSHIFT32((b), (shift))) // shift >= 0
+
+/* Requires that shift > 0 */
+#define SKP_RSHIFT_ROUND(a, shift) ((shift) == 1 ? ((a) >> 1) + ((a) & 1) : (((a) >> ((shift) - 1)) + 1) >> 1)
+#define SKP_RSHIFT_ROUND64(a, shift) ((shift) == 1 ? ((a) >> 1) + ((a) & 1) : (((a) >> ((shift) - 1)) + 1) >> 1)
+
+/* Number of rightshift required to fit the multiplication */
+#define SKP_NSHIFT_MUL_32_32(a, b) ( -(31- (32-SKP_Silk_CLZ32(SKP_abs(a)) + (32-SKP_Silk_CLZ32(SKP_abs(b))))) )
+#define SKP_NSHIFT_MUL_16_16(a, b) ( -(15- (16-SKP_Silk_CLZ16(SKP_abs(a)) + (16-SKP_Silk_CLZ16(SKP_abs(b))))) )
+
+
+#define SKP_min(a, b) (((a) < (b)) ? (a) : (b))
+#define SKP_max(a, b) (((a) > (b)) ? (a) : (b))
+
+/* Macro to convert floating-point constants to fixed-point */
+#define SKP_FIX_CONST( C, Q ) ((SKP_int32)((C) * (1 << (Q)) + 0.5))
+
+/* SKP_min() versions with typecast in the function call */
+SKP_INLINE SKP_int SKP_min_int(SKP_int a, SKP_int b)
+{
+ return (((a) < (b)) ? (a) : (b));
+}
+SKP_INLINE SKP_int16 SKP_min_16(SKP_int16 a, SKP_int16 b)
+{
+ return (((a) < (b)) ? (a) : (b));
+}
+SKP_INLINE SKP_int32 SKP_min_32(SKP_int32 a, SKP_int32 b)
+{
+ return (((a) < (b)) ? (a) : (b));
+}
+SKP_INLINE SKP_int64 SKP_min_64(SKP_int64 a, SKP_int64 b)
+{
+ return (((a) < (b)) ? (a) : (b));
+}
+
+/* SKP_min() versions with typecast in the function call */
+SKP_INLINE SKP_int SKP_max_int(SKP_int a, SKP_int b)
+{
+ return (((a) > (b)) ? (a) : (b));
+}
+SKP_INLINE SKP_int16 SKP_max_16(SKP_int16 a, SKP_int16 b)
+{
+ return (((a) > (b)) ? (a) : (b));
+}
+SKP_INLINE SKP_int32 SKP_max_32(SKP_int32 a, SKP_int32 b)
+{
+ return (((a) > (b)) ? (a) : (b));
+}
+SKP_INLINE SKP_int64 SKP_max_64(SKP_int64 a, SKP_int64 b)
+{
+ return (((a) > (b)) ? (a) : (b));
+}
+
+#define SKP_LIMIT( a, limit1, limit2) ((limit1) > (limit2) ? ((a) > (limit1) ? (limit1) : ((a) < (limit2) ? (limit2) : (a))) \
+ : ((a) > (limit2) ? (limit2) : ((a) < (limit1) ? (limit1) : (a))))
+
+//#define SKP_non_neg(a) ((a) & ((-(a)) >> (8 * sizeof(a) - 1))) /* doesn't seem faster than SKP_max(0, a);
+
+#define SKP_abs(a) (((a) > 0) ? (a) : -(a)) // Be careful, SKP_abs returns wrong when input equals to SKP_intXX_MIN
+#define SKP_abs_int(a) (((a) ^ ((a) >> (8 * sizeof(a) - 1))) - ((a) >> (8 * sizeof(a) - 1)))
+#define SKP_abs_int32(a) (((a) ^ ((a) >> 31)) - ((a) >> 31))
+#define SKP_abs_int64(a) (((a) > 0) ? (a) : -(a))
+
+#define SKP_sign(a) ((a) > 0 ? 1 : ( (a) < 0 ? -1 : 0 ))
+
+#define SKP_sqrt(a) (sqrt(a))
+
+/* PSEUDO-RANDOM GENERATOR */
+/* Make sure to store the result as the seed for the next call (also in between */
+/* frames), otherwise result won't be random at all. When only using some of the */
+/* bits, take the most significant bits by right-shifting. Do not just mask off */
+/* the lowest bits. */
+#define SKP_RAND(seed) (SKP_MLA_ovflw(907633515, (seed), 196314165))
+
+// Add some multiplication functions that can be easily mapped to ARM.
+
+// SKP_SMMUL: Signed top word multiply.
+// ARMv6 2 instruction cycles.
+// ARMv3M+ 3 instruction cycles. use SMULL and ignore LSB registers.(except xM)
+//#define SKP_SMMUL(a32, b32) (SKP_int32)SKP_RSHIFT(SKP_SMLAL(SKP_SMULWB((a32), (b32)), (a32), SKP_RSHIFT_ROUND((b32), 16)), 16)
+// the following seems faster on x86
+#define SKP_SMMUL(a32, b32) (SKP_int32)SKP_RSHIFT64(SKP_SMULL((a32), (b32)), 32)
+
+#include "SKP_Silk_Inlines.h"
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
--- /dev/null
+++ b/src/SKP_Silk_VAD.c
@@ -1,0 +1,320 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+/*
+ * File Name: SKP_Silk_VAD.c
+ * Description: Silk VAD.
+ */
+
+#include <stdlib.h>
+#include "SKP_Silk_main.h"
+
+/**********************************/
+/* Initialization of the Silk VAD */
+/**********************************/
+SKP_int SKP_Silk_VAD_Init( /* O Return value, 0 if success */
+ SKP_Silk_VAD_state *psSilk_VAD /* I/O Pointer to Silk VAD state */
+)
+{
+ SKP_int b, ret = 0;
+
+ /* reset state memory */
+ SKP_memset( psSilk_VAD, 0, sizeof( SKP_Silk_VAD_state ) );
+
+ /* init noise levels */
+ /* Initialize array with approx pink noise levels (psd proportional to inverse of frequency) */
+ for( b = 0; b < VAD_N_BANDS; b++ ) {
+ psSilk_VAD->NoiseLevelBias[ b ] = SKP_max_32( SKP_DIV32_16( VAD_NOISE_LEVELS_BIAS, b + 1 ), 1 );
+ }
+
+ /* Initialize state */
+ for( b = 0; b < VAD_N_BANDS; b++ ) {
+ psSilk_VAD->NL[ b ] = SKP_MUL( 100, psSilk_VAD->NoiseLevelBias[ b ] );
+ psSilk_VAD->inv_NL[ b ] = SKP_DIV32( SKP_int32_MAX, psSilk_VAD->NL[ b ] );
+ }
+ psSilk_VAD->counter = 15;
+
+ /* init smoothed energy-to-noise ratio*/
+ for( b = 0; b < VAD_N_BANDS; b++ ) {
+ psSilk_VAD->NrgRatioSmth_Q8[ b ] = 100 * 256; /* 100 * 256 --> 20 dB SNR */
+ }
+
+ return( ret );
+}
+
+/* Weighting factors for tilt measure */
+const static SKP_int32 tiltWeights[ VAD_N_BANDS ] = { 30000, 6000, -12000, -12000 };
+
+/***************************************/
+/* Get the speech activity level in Q8 */
+/***************************************/
+SKP_int SKP_Silk_VAD_GetSA_Q8( /* O Return value, 0 if success */
+ SKP_Silk_VAD_state *psSilk_VAD, /* I/O Silk VAD state */
+ SKP_int *pSA_Q8, /* O Speech activity level in Q8 */
+ SKP_int *pSNR_dB_Q7, /* O SNR for current frame in Q7 */
+ SKP_int pQuality_Q15[ VAD_N_BANDS ], /* O Smoothed SNR for each band */
+ SKP_int *pTilt_Q15, /* O current frame's frequency tilt */
+ const SKP_int16 pIn[], /* I PCM input [framelength] */
+ const SKP_int framelength /* I Input frame length */
+)
+{
+ SKP_int SA_Q15, input_tilt;
+ SKP_int32 scratch[ 3 * MAX_FRAME_LENGTH / 2 ];
+ SKP_int decimated_framelength, dec_subframe_length, dec_subframe_offset, SNR_Q7, i, b, s;
+ SKP_int32 sumSquared, smooth_coef_Q16;
+ SKP_int16 HPstateTmp;
+
+ SKP_int16 X[ VAD_N_BANDS ][ MAX_FRAME_LENGTH / 2 ];
+ SKP_int32 Xnrg[ VAD_N_BANDS ];
+ SKP_int32 NrgToNoiseRatio_Q8[ VAD_N_BANDS ];
+ SKP_int32 speech_nrg, x_tmp;
+ SKP_int ret = 0;
+
+ /* Safety checks */
+ SKP_assert( VAD_N_BANDS == 4 );
+ SKP_assert( MAX_FRAME_LENGTH >= framelength );
+ SKP_assert( framelength <= 512 );
+
+ /***********************/
+ /* Filter and Decimate */
+ /***********************/
+ /* 0-8 kHz to 0-4 kHz and 4-8 kHz */
+ SKP_Silk_ana_filt_bank_1( pIn, &psSilk_VAD->AnaState[ 0 ], &X[ 0 ][ 0 ], &X[ 3 ][ 0 ], &scratch[ 0 ], framelength );
+
+ /* 0-4 kHz to 0-2 kHz and 2-4 kHz */
+ SKP_Silk_ana_filt_bank_1( &X[ 0 ][ 0 ], &psSilk_VAD->AnaState1[ 0 ], &X[ 0 ][ 0 ], &X[ 2 ][ 0 ], &scratch[ 0 ], SKP_RSHIFT( framelength, 1 ) );
+
+ /* 0-2 kHz to 0-1 kHz and 1-2 kHz */
+ SKP_Silk_ana_filt_bank_1( &X[ 0 ][ 0 ], &psSilk_VAD->AnaState2[ 0 ], &X[ 0 ][ 0 ], &X[ 1 ][ 0 ], &scratch[ 0 ], SKP_RSHIFT( framelength, 2 ) );
+
+ /*********************************************/
+ /* HP filter on lowest band (differentiator) */
+ /*********************************************/
+ decimated_framelength = SKP_RSHIFT( framelength, 3 );
+ X[ 0 ][ decimated_framelength - 1 ] = SKP_RSHIFT( X[ 0 ][ decimated_framelength - 1 ], 1 );
+ HPstateTmp = X[ 0 ][ decimated_framelength - 1 ];
+ for( i = decimated_framelength - 1; i > 0; i-- ) {
+ X[ 0 ][ i - 1 ] = SKP_RSHIFT( X[ 0 ][ i - 1 ], 1 );
+ X[ 0 ][ i ] -= X[ 0 ][ i - 1 ];
+ }
+ X[ 0 ][ 0 ] -= psSilk_VAD->HPstate;
+ psSilk_VAD->HPstate = HPstateTmp;
+
+ /*************************************/
+ /* Calculate the energy in each band */
+ /*************************************/
+ for( b = 0; b < VAD_N_BANDS; b++ ) {
+ /* Find the decimated framelength in the non-uniformly divided bands */
+ decimated_framelength = SKP_RSHIFT( framelength, SKP_min_int( VAD_N_BANDS - b, VAD_N_BANDS - 1 ) );
+
+ /* Split length into subframe lengths */
+ dec_subframe_length = SKP_RSHIFT( decimated_framelength, VAD_INTERNAL_SUBFRAMES_LOG2 );
+ dec_subframe_offset = 0;
+
+ /* Compute energy per sub-frame */
+ /* initialize with summed energy of last subframe */
+ Xnrg[ b ] = psSilk_VAD->XnrgSubfr[ b ];
+ for( s = 0; s < VAD_INTERNAL_SUBFRAMES; s++ ) {
+ sumSquared = 0;
+ for( i = 0; i < dec_subframe_length; i++ ) {
+ /* The energy will be less than dec_subframe_length * ( SKP_int16_MIN / 8 )^2. */
+ /* Therefore we can accumulate with no risk of overflow (unless dec_subframe_length > 128) */
+ x_tmp = SKP_RSHIFT( X[ b ][ i + dec_subframe_offset ], 3 );
+ sumSquared = SKP_SMLABB( sumSquared, x_tmp, x_tmp );
+
+ /* Safety check */
+ SKP_assert( sumSquared >= 0 );
+ }
+
+ /* add/saturate summed energy of current subframe */
+ if( s < VAD_INTERNAL_SUBFRAMES - 1 ) {
+ Xnrg[ b ] = SKP_ADD_POS_SAT32( Xnrg[ b ], sumSquared );
+ } else {
+ /* look-ahead subframe */
+ Xnrg[ b ] = SKP_ADD_POS_SAT32( Xnrg[ b ], SKP_RSHIFT( sumSquared, 1 ) );
+ }
+
+ dec_subframe_offset += dec_subframe_length;
+ }
+ psSilk_VAD->XnrgSubfr[ b ] = sumSquared;
+ }
+
+ /********************/
+ /* Noise estimation */
+ /********************/
+ SKP_Silk_VAD_GetNoiseLevels( &Xnrg[ 0 ], psSilk_VAD );
+
+ /***********************************************/
+ /* Signal-plus-noise to noise ratio estimation */
+ /***********************************************/
+ sumSquared = 0;
+ input_tilt = 0;
+ for( b = 0; b < VAD_N_BANDS; b++ ) {
+ speech_nrg = Xnrg[ b ] - psSilk_VAD->NL[ b ];
+ if( speech_nrg > 0 ) {
+ /* Divide, with sufficient resolution */
+ if( ( Xnrg[ b ] & 0xFF800000 ) == 0 ) {
+ NrgToNoiseRatio_Q8[ b ] = SKP_DIV32( SKP_LSHIFT( Xnrg[ b ], 8 ), psSilk_VAD->NL[ b ] + 1 );
+ } else {
+ NrgToNoiseRatio_Q8[ b ] = SKP_DIV32( Xnrg[ b ], SKP_RSHIFT( psSilk_VAD->NL[ b ], 8 ) + 1 );
+ }
+
+ /* Convert to log domain */
+ SNR_Q7 = SKP_Silk_lin2log( NrgToNoiseRatio_Q8[ b ] ) - 8 * 128;
+
+ /* Sum-of-squares */
+ sumSquared = SKP_SMLABB( sumSquared, SNR_Q7, SNR_Q7 ); /* Q14 */
+
+ /* Tilt measure */
+ if( speech_nrg < ( 1 << 20 ) ) {
+ /* Scale down SNR value for small subband speech energies */
+ SNR_Q7 = SKP_SMULWB( SKP_LSHIFT( SKP_Silk_SQRT_APPROX( speech_nrg ), 6 ), SNR_Q7 );
+ }
+ input_tilt = SKP_SMLAWB( input_tilt, tiltWeights[ b ], SNR_Q7 );
+ } else {
+ NrgToNoiseRatio_Q8[ b ] = 256;
+ }
+ }
+
+ /* Mean-of-squares */
+ sumSquared = SKP_DIV32_16( sumSquared, VAD_N_BANDS ); /* Q14 */
+
+ /* Root-mean-square approximation, scale to dBs, and write to output pointer */
+ *pSNR_dB_Q7 = ( SKP_int16 )( 3 * SKP_Silk_SQRT_APPROX( sumSquared ) ); /* Q7 */
+
+ /*********************************/
+ /* Speech Probability Estimation */
+ /*********************************/
+ SA_Q15 = SKP_Silk_sigm_Q15( SKP_SMULWB( VAD_SNR_FACTOR_Q16, *pSNR_dB_Q7 ) - VAD_NEGATIVE_OFFSET_Q5 );
+
+ /**************************/
+ /* Frequency Tilt Measure */
+ /**************************/
+ *pTilt_Q15 = SKP_LSHIFT( SKP_Silk_sigm_Q15( input_tilt ) - 16384, 1 );
+
+ /**************************************************/
+ /* Scale the sigmoid output based on power levels */
+ /**************************************************/
+ speech_nrg = 0;
+ for( b = 0; b < VAD_N_BANDS; b++ ) {
+ /* Accumulate signal-without-noise energies, higher frequency bands have more weight */
+ speech_nrg += ( b + 1 ) * SKP_RSHIFT( Xnrg[ b ] - psSilk_VAD->NL[ b ], 4 );
+ }
+
+ /* Power scaling */
+ if( speech_nrg <= 0 ) {
+ SA_Q15 = SKP_RSHIFT( SA_Q15, 1 );
+ } else if( speech_nrg < 32768 ) {
+ /* square-root */
+ speech_nrg = SKP_Silk_SQRT_APPROX( SKP_LSHIFT( speech_nrg, 15 ) );
+ SA_Q15 = SKP_SMULWB( 32768 + speech_nrg, SA_Q15 );
+ }
+
+ /* Copy the resulting speech activity in Q8 to *pSA_Q8 */
+ *pSA_Q8 = SKP_min_int( SKP_RSHIFT( SA_Q15, 7 ), SKP_uint8_MAX );
+
+ /***********************************/
+ /* Energy Level and SNR estimation */
+ /***********************************/
+ /* smoothing coefficient */
+ smooth_coef_Q16 = SKP_SMULWB( VAD_SNR_SMOOTH_COEF_Q18, SKP_SMULWB( SA_Q15, SA_Q15 ) );
+ for( b = 0; b < VAD_N_BANDS; b++ ) {
+ /* compute smoothed energy-to-noise ratio per band */
+ psSilk_VAD->NrgRatioSmth_Q8[ b ] = SKP_SMLAWB( psSilk_VAD->NrgRatioSmth_Q8[ b ],
+ NrgToNoiseRatio_Q8[ b ] - psSilk_VAD->NrgRatioSmth_Q8[ b ], smooth_coef_Q16 );
+
+ /* signal to noise ratio in dB per band */
+ SNR_Q7 = 3 * ( SKP_Silk_lin2log( psSilk_VAD->NrgRatioSmth_Q8[b] ) - 8 * 128 );
+ /* quality = sigmoid( 0.25 * ( SNR_dB - 16 ) ); */
+ pQuality_Q15[ b ] = SKP_Silk_sigm_Q15( SKP_RSHIFT( SNR_Q7 - 16 * 128, 4 ) );
+ }
+
+ return( ret );
+}
+
+/**************************/
+/* Noise level estimation */
+/**************************/
+void SKP_Silk_VAD_GetNoiseLevels(
+ const SKP_int32 pX[ VAD_N_BANDS ], /* I subband energies */
+ SKP_Silk_VAD_state *psSilk_VAD /* I/O Pointer to Silk VAD state */
+)
+{
+ SKP_int k;
+ SKP_int32 nl, nrg, inv_nrg;
+ SKP_int coef, min_coef;
+
+ /* Initially faster smoothing */
+ if( psSilk_VAD->counter < 1000 ) { /* 1000 = 20 sec */
+ min_coef = SKP_DIV32_16( SKP_int16_MAX, SKP_RSHIFT( psSilk_VAD->counter, 4 ) + 1 );
+ } else {
+ min_coef = 0;
+ }
+
+ for( k = 0; k < VAD_N_BANDS; k++ ) {
+ /* Get old noise level estimate for current band */
+ nl = psSilk_VAD->NL[ k ];
+ SKP_assert( nl >= 0 );
+
+ /* Add bias */
+ nrg = SKP_ADD_POS_SAT32( pX[ k ], psSilk_VAD->NoiseLevelBias[ k ] );
+ SKP_assert( nrg > 0 );
+
+ /* Invert energies */
+ inv_nrg = SKP_DIV32( SKP_int32_MAX, nrg );
+ SKP_assert( inv_nrg >= 0 );
+
+ /* Less update when subband energy is high */
+ if( nrg > SKP_LSHIFT( nl, 3 ) ) {
+ coef = VAD_NOISE_LEVEL_SMOOTH_COEF_Q16 >> 3;
+ } else if( nrg < nl ) {
+ coef = VAD_NOISE_LEVEL_SMOOTH_COEF_Q16;
+ } else {
+ coef = SKP_SMULWB( SKP_SMULWW( inv_nrg, nl ), VAD_NOISE_LEVEL_SMOOTH_COEF_Q16 << 1 );
+ }
+
+ /* Initially faster smoothing */
+ coef = SKP_max_int( coef, min_coef );
+
+ /* Smooth inverse energies */
+ psSilk_VAD->inv_NL[ k ] = SKP_SMLAWB( psSilk_VAD->inv_NL[ k ], inv_nrg - psSilk_VAD->inv_NL[ k ], coef );
+ SKP_assert( psSilk_VAD->inv_NL[ k ] >= 0 );
+
+ /* Compute noise level by inverting again */
+ nl = SKP_DIV32( SKP_int32_MAX, psSilk_VAD->inv_NL[ k ] );
+ SKP_assert( nl >= 0 );
+
+ /* Limit noise levels (guarantee 7 bits of head room) */
+ nl = SKP_min( nl, 0x00FFFFFF );
+
+ /* Store as part of state */
+ psSilk_VAD->NL[ k ] = nl;
+ }
+
+ /* Increment frame counter */
+ psSilk_VAD->counter++;
+}
--- /dev/null
+++ b/src/SKP_Silk_VQ_nearest_neighbor_FIX.c
@@ -1,0 +1,110 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_main_FIX.h"
+
+/* Entropy constrained MATRIX-weighted VQ, hard-coded to 5-element vectors, for a single input data vector */
+void SKP_Silk_VQ_WMat_EC_FIX(
+ SKP_int *ind, /* O index of best codebook vector */
+ SKP_int32 *rate_dist_Q14, /* O best weighted quantization error + mu * rate*/
+ const SKP_int16 *in_Q14, /* I input vector to be quantized */
+ const SKP_int32 *W_Q18, /* I weighting matrix */
+ const SKP_int16 *cb_Q14, /* I codebook */
+ const SKP_int16 *cl_Q6, /* I code length for each codebook vector */
+ const SKP_int mu_Q8, /* I tradeoff between weighted error and rate */
+ SKP_int L /* I number of vectors in codebook */
+)
+{
+ SKP_int k;
+ const SKP_int16 *cb_row_Q14;
+ SKP_int32 sum1_Q14, sum2_Q16, diff_Q14_01, diff_Q14_23, diff_Q14_4;
+
+ /* Loop over codebook */
+ *rate_dist_Q14 = SKP_int32_MAX;
+ cb_row_Q14 = cb_Q14;
+ for( k = 0; k < L; k++ ) {
+ /* Pack pairs of int16 values per int32 */
+ diff_Q14_01 = (SKP_uint16)( in_Q14[ 0 ] - cb_row_Q14[ 0 ] ) | SKP_LSHIFT( ( SKP_int32 )in_Q14[ 1 ] - cb_row_Q14[ 1 ], 16 );
+ diff_Q14_23 = (SKP_uint16)( in_Q14[ 2 ] - cb_row_Q14[ 2 ] ) | SKP_LSHIFT( ( SKP_int32 )in_Q14[ 3 ] - cb_row_Q14[ 3 ], 16 );
+ diff_Q14_4 = in_Q14[ 4 ] - cb_row_Q14[ 4 ];
+
+ /* Weighted rate */
+ sum1_Q14 = SKP_SMULBB( mu_Q8, cl_Q6[ k ] );
+
+ SKP_assert( sum1_Q14 >= 0 );
+
+ /* Add weighted quantization error, assuming W_Q18 is symmetric */
+ /* NOTE: the code below loads two int16 values as one int32, and multiplies each using the */
+ /* SMLAWB and SMLAWT instructions. On a big-endian CPU the two int16 variables would be */
+ /* loaded in reverse order and the code will give the wrong result. In that case swapping */
+ /* the SMLAWB and SMLAWT instructions should solve the problem. */
+ /* first row of W_Q18 */
+ sum2_Q16 = SKP_SMULWT( W_Q18[ 1 ], diff_Q14_01 );
+ sum2_Q16 = SKP_SMLAWB( sum2_Q16, W_Q18[ 2 ], diff_Q14_23 );
+ sum2_Q16 = SKP_SMLAWT( sum2_Q16, W_Q18[ 3 ], diff_Q14_23 );
+ sum2_Q16 = SKP_SMLAWB( sum2_Q16, W_Q18[ 4 ], diff_Q14_4 );
+ sum2_Q16 = SKP_LSHIFT( sum2_Q16, 1 );
+ sum2_Q16 = SKP_SMLAWB( sum2_Q16, W_Q18[ 0 ], diff_Q14_01 );
+ sum1_Q14 = SKP_SMLAWB( sum1_Q14, sum2_Q16, diff_Q14_01 );
+
+ /* second row of W_Q18 */
+ sum2_Q16 = SKP_SMULWB( W_Q18[ 7 ], diff_Q14_23 );
+ sum2_Q16 = SKP_SMLAWT( sum2_Q16, W_Q18[ 8 ], diff_Q14_23 );
+ sum2_Q16 = SKP_SMLAWB( sum2_Q16, W_Q18[ 9 ], diff_Q14_4 );
+ sum2_Q16 = SKP_LSHIFT( sum2_Q16, 1 );
+ sum2_Q16 = SKP_SMLAWT( sum2_Q16, W_Q18[ 6 ], diff_Q14_01 );
+ sum1_Q14 = SKP_SMLAWT( sum1_Q14, sum2_Q16, diff_Q14_01 );
+
+ /* third row of W_Q18 */
+ sum2_Q16 = SKP_SMULWT( W_Q18[ 13 ], diff_Q14_23 );
+ sum2_Q16 = SKP_SMLAWB( sum2_Q16, W_Q18[ 14 ], diff_Q14_4 );
+ sum2_Q16 = SKP_LSHIFT( sum2_Q16, 1 );
+ sum2_Q16 = SKP_SMLAWB( sum2_Q16, W_Q18[ 12 ], diff_Q14_23 );
+ sum1_Q14 = SKP_SMLAWB( sum1_Q14, sum2_Q16, diff_Q14_23 );
+
+ /* fourth row of W_Q18 */
+ sum2_Q16 = SKP_SMULWB( W_Q18[ 19 ], diff_Q14_4 );
+ sum2_Q16 = SKP_LSHIFT( sum2_Q16, 1 );
+ sum2_Q16 = SKP_SMLAWT( sum2_Q16, W_Q18[ 18 ], diff_Q14_23 );
+ sum1_Q14 = SKP_SMLAWT( sum1_Q14, sum2_Q16, diff_Q14_23 );
+
+ /* last row of W_Q18 */
+ sum2_Q16 = SKP_SMULWB( W_Q18[ 24 ], diff_Q14_4 );
+ sum1_Q14 = SKP_SMLAWB( sum1_Q14, sum2_Q16, diff_Q14_4 );
+
+ SKP_assert( sum1_Q14 >= 0 );
+
+ /* find best */
+ if( sum1_Q14 < *rate_dist_Q14 ) {
+ *rate_dist_Q14 = sum1_Q14;
+ *ind = k;
+ }
+
+ /* Go to next cbk vector */
+ cb_row_Q14 += LTP_ORDER;
+ }
+}
--- /dev/null
+++ b/src/SKP_Silk_allpass_int.c
@@ -1,0 +1,69 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+/* *
+ * SKP_Silk_allpass_int.c *
+ * *
+ * First-order allpass filter with *
+ * transfer function: *
+ * *
+ * A + Z^(-1) *
+ * H(z) = ------------ *
+ * 1 + A*Z^(-1) *
+ * *
+ * Implemented using minimum multiplier filter design. *
+ * *
+ * Reference: http://www.univ.trieste.it/~ramponi/teaching/ *
+ * DSP/materiale/Ch6(2).pdf *
+ * *
+ * Copyright 2007 (c), Skype Limited *
+ * Date: 070525 *
+ * */
+#include "SKP_Silk_SigProc_FIX.h"
+
+
+/* First-order allpass filter */
+void SKP_Silk_allpass_int(
+ const SKP_int32 *in, /* I: Q25 input signal [len] */
+ SKP_int32 *S, /* I/O: Q25 state [1] */
+ SKP_int A, /* I: Q15 coefficient (0 <= A < 32768) */
+ SKP_int32 *out, /* O: Q25 output signal [len] */
+ const SKP_int32 len /* I: Number of samples */
+)
+{
+ SKP_int32 Y2, X2, S0;
+ SKP_int k;
+
+ S0 = S[ 0 ];
+ for( k = len - 1; k >= 0; k-- ) {
+ Y2 = *in - S0;
+ X2 = ( Y2 >> 15 ) * A + ( ( ( Y2 & 0x00007FFF ) * A ) >> 15 );
+ ( *out++ ) = S0 + X2;
+ S0 = ( *in++ ) + X2;
+ }
+ S[ 0 ] = S0;
+}
--- /dev/null
+++ b/src/SKP_Silk_ana_filt_bank_1.c
@@ -1,0 +1,73 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+/* *
+ * SKP_ana_filt_bank_1.c *
+ * *
+ * Split signal into two decimated bands using first-order allpass filters *
+ * *
+ * Copyright 2006 (c), Skype Limited *
+ * Date: 060221 *
+ * */
+#include "SKP_Silk_SigProc_FIX.h"
+
+/* Coefficients for 2-band filter bank based on first-order allpass filters */
+static SKP_int16 A_fb1_20[ 1 ] = { 5394 };
+static SKP_int16 A_fb1_21[ 1 ] = { 20623 };
+
+/* Split signal into two decimated bands using first-order allpass filters */
+void SKP_Silk_ana_filt_bank_1(
+ const SKP_int16 *in, /* I: Input signal [N] */
+ SKP_int32 *S, /* I/O: State vector [2] */
+ SKP_int16 *outL, /* O: Low band [N/2] */
+ SKP_int16 *outH, /* O: High band [N/2] */
+ SKP_int32 *scratch, /* I: Scratch memory [3*N/2] */
+ const SKP_int32 N /* I: Number of input samples */
+)
+{
+ SKP_int k, N2 = SKP_RSHIFT( N, 1 );
+ SKP_int32 out_tmp;
+
+ /* De-interleave three allpass inputs, and convert Q15 -> Q25 */
+ for( k = 0; k < N2; k++ ) {
+ scratch[ k + N ] = SKP_LSHIFT( (SKP_int32)in[ 2 * k ], 10 );
+ scratch[ k + N2 ] = SKP_LSHIFT( (SKP_int32)in[ 2 * k + 1 ], 10 );
+ }
+
+ /* Allpass filters */
+ SKP_Silk_allpass_int( scratch + N2, S+0, A_fb1_20[ 0 ], scratch, N2 );
+ SKP_Silk_allpass_int( scratch + N, S+1, A_fb1_21[ 0 ], scratch + N2, N2 );
+
+ /* Add and subtract two allpass outputs to create bands */
+ for( k = 0; k < N2; k++ ) {
+ out_tmp = scratch[ k ] + scratch[ k + N2 ];
+ outL[ k ] = (SKP_int16)SKP_SAT16( SKP_RSHIFT_ROUND( out_tmp, 11 ) );
+
+ out_tmp = scratch[ k ] - scratch[ k + N2 ];
+ outH[ k ] = (SKP_int16)SKP_SAT16( SKP_RSHIFT_ROUND( out_tmp, 11 ) );
+ }
+}
--- /dev/null
+++ b/src/SKP_Silk_apply_sine_window.c
@@ -1,0 +1,92 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_SigProc_FIX.h"
+
+/* Apply sine window to signal vector. */
+/* Window types: */
+/* 0 -> sine window from 0 to pi */
+/* 1 -> sine window from 0 to pi/2 */
+/* 2 -> sine window from pi/2 to pi */
+/* every other sample of window is linearly interpolated, for speed */
+void SKP_Silk_apply_sine_window(
+ SKP_int16 px_win[], /* O Pointer to windowed signal */
+ const SKP_int16 px[], /* I Pointer to input signal */
+ const SKP_int win_type, /* I Selects a window type */
+ const SKP_int length /* I Window length, multiple of 4 */
+)
+{
+ SKP_int k;
+ SKP_int32 px32, f_Q16, c_Q20, S0_Q16, S1_Q16;
+
+ /* Length must be multiple of 4 */
+ SKP_assert( ( length & 3 ) == 0 );
+
+ /* Input pointer must be 4-byte aligned */
+ SKP_assert( ( (SKP_int64)px & 3 ) == 0 );
+
+ if( win_type == 0 ) {
+ f_Q16 = SKP_DIV32_16( 411775, length + 1 ); // 411775 = 2 * 65536 * pi
+ } else {
+ f_Q16 = SKP_DIV32_16( 205887, length + 1 ); // 205887 = 65536 * pi
+ }
+
+ /* factor used for cosine approximation */
+ c_Q20 = -SKP_RSHIFT( SKP_MUL( f_Q16, f_Q16 ), 12 );
+
+ /* c_Q20 becomes too large if length is too small */
+ SKP_assert( c_Q20 >= -32768 );
+
+ /* initialize state */
+ if( win_type < 2 ) {
+ /* start from 0 */
+ S0_Q16 = 0;
+ /* approximation of sin(f) */
+ S1_Q16 = f_Q16;
+ } else {
+ /* start from 1 */
+ S0_Q16 = ( 1 << 16 );
+ /* approximation of cos(f) */
+ S1_Q16 = ( 1 << 16 ) + SKP_RSHIFT( c_Q20, 5 );
+ }
+
+ /* Uses the recursive equation: sin(n*f) = 2 * cos(f) * sin((n-1)*f) - sin((n-2)*f) */
+ /* 4 samples at a time */
+ for( k = 0; k < length; k += 4 ) {
+ px32 = *( (SKP_int32 *)&px[ k ] ); /* load two values at once */
+ px_win[ k ] = (SKP_int16)SKP_SMULWB( SKP_RSHIFT( S0_Q16 + S1_Q16, 1 ), px32 );
+ px_win[ k + 1 ] = (SKP_int16)SKP_SMULWT( S1_Q16, px32 );
+ S0_Q16 = SKP_RSHIFT( SKP_MUL( c_Q20, S1_Q16 ), 20 ) + SKP_LSHIFT( S1_Q16, 1 ) - S0_Q16 + 1;
+ S0_Q16 = SKP_min( S0_Q16, ( 1 << 16 ) );
+
+ px32 = *( (SKP_int32 *)&px[k + 2] ); /* load two values at once */
+ px_win[ k + 2 ] = (SKP_int16)SKP_SMULWB( SKP_RSHIFT( S0_Q16 + S1_Q16, 1 ), px32 );
+ px_win[ k + 3 ] = (SKP_int16)SKP_SMULWT( S0_Q16, px32 );
+ S1_Q16 = SKP_RSHIFT( SKP_MUL( c_Q20, S0_Q16 ), 20 ) + SKP_LSHIFT( S0_Q16, 1 ) - S1_Q16;
+ S1_Q16 = SKP_min( S1_Q16, ( 1 << 16 ) );
+ }
+}
--- /dev/null
+++ b/src/SKP_Silk_array_maxabs.c
@@ -1,0 +1,64 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+/* *
+ * SKP_Silk_int16_array_maxabs.c *
+ * *
+ * Function that returns the maximum absolut value of *
+ * the input vector *
+ * *
+ * Copyright 2006 (c), Skype Limited *
+ * Date: 060221 *
+ * */
+#include "SKP_Silk_SigProc_FIX.h"
+
+/* Function that returns the maximum absolut value of the input vector */
+SKP_int16 SKP_Silk_int16_array_maxabs( /* O Maximum absolute value, max: 2^15-1 */
+ const SKP_int16 *vec, /* I Input vector [len] */
+ const SKP_int32 len /* I Length of input vector */
+)
+{
+ SKP_int32 max = 0, i, lvl = 0, ind;
+
+ ind = len - 1;
+ max = SKP_SMULBB( vec[ ind ], vec[ ind ] );
+ for( i = len - 2; i >= 0; i-- ) {
+ lvl = SKP_SMULBB( vec[ i ], vec[ i ] );
+ if( lvl > max ) {
+ max = lvl;
+ ind = i;
+ }
+ }
+
+ /* Do not return 32768, as it will not fit in an int16 so may lead to problems later on */
+ lvl = SKP_abs( vec[ ind ] );
+ if( lvl > SKP_int16_MAX ) {
+ return( SKP_int16_MAX );
+ } else {
+ return( (SKP_int16)lvl );
+ }
+}
--- /dev/null
+++ b/src/SKP_Silk_autocorr.c
@@ -1,0 +1,81 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+/* *
+ * SKP_Silk_autocorr.c *
+ * *
+ * Calculates the autocorrelation *
+ * The result has 29 non-zero bits for the first correlation, to leave *
+ * some room for adding white noise fractions etc. *
+ * *
+ * Copyright 2008 (c), Skype Limited *
+ * */
+#include "SKP_Silk_SigProc_FIX.h"
+
+/* Compute autocorrelation */
+void SKP_Silk_autocorr(
+ SKP_int32 *results, /* O Result (length correlationCount) */
+ SKP_int32 *scale, /* O Scaling of the correlation vector */
+ const SKP_int16 *inputData, /* I Input data to correlate */
+ const SKP_int inputDataSize, /* I Length of input */
+ const SKP_int correlationCount /* I Number of correlation taps to compute */
+)
+{
+ SKP_int i, lz, nRightShifts, corrCount;
+ SKP_int64 corr64;
+
+ corrCount = SKP_min_int( inputDataSize, correlationCount );
+
+ /* compute energy (zero-lag correlation) */
+ corr64 = SKP_Silk_inner_prod16_aligned_64( inputData, inputData, inputDataSize );
+
+ /* deal with all-zero input data */
+ corr64 += 1;
+
+ /* number of leading zeros */
+ lz = SKP_Silk_CLZ64( corr64 );
+
+ /* scaling: number of right shifts applied to correlations */
+ nRightShifts = 35 - lz;
+ *scale = nRightShifts;
+
+ if( nRightShifts <= 0 ) {
+ results[ 0 ] = SKP_LSHIFT( (SKP_int32)SKP_CHECK_FIT32( corr64 ), -nRightShifts );
+
+ /* compute remaining correlations based on int32 inner product */
+ for( i = 1; i < corrCount; i++ ) {
+ results[ i ] = SKP_LSHIFT( SKP_Silk_inner_prod_aligned( inputData, inputData + i, inputDataSize - i ), -nRightShifts );
+ }
+ } else {
+ results[ 0 ] = (SKP_int32)SKP_CHECK_FIT32( SKP_RSHIFT64( corr64, nRightShifts ) );
+
+ /* compute remaining correlations based on int64 inner product */
+ for( i = 1; i < corrCount; i++ ) {
+ results[ i ] = (SKP_int32)SKP_CHECK_FIT32( SKP_RSHIFT64( SKP_Silk_inner_prod16_aligned_64( inputData, inputData + i, inputDataSize - i ), nRightShifts ) );
+ }
+ }
+}
--- /dev/null
+++ b/src/SKP_Silk_biquad.c
@@ -1,0 +1,72 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+/* *
+ * SKP_Silk_biquad.c *
+ * *
+ * Second order ARMA filter *
+ * Can handle slowly varying filter coefficients *
+ * *
+ * Copyright 2006 (c), Skype Limited *
+ * Date: 060221 *
+ * */
+#include "SKP_Silk_SigProc_FIX.h"
+
+/* Second order ARMA filter */
+/* Can handle slowly varying filter coefficients */
+void SKP_Silk_biquad(
+ const SKP_int16 *in, /* I: input signal */
+ const SKP_int16 *B, /* I: MA coefficients, Q13 [3] */
+ const SKP_int16 *A, /* I: AR coefficients, Q13 [2] */
+ SKP_int32 *S, /* I/O: state vector [2] */
+ SKP_int16 *out, /* O: output signal */
+ const SKP_int32 len /* I: signal length */
+)
+{
+ SKP_int k, in16;
+ SKP_int32 A0_neg, A1_neg, S0, S1, out32, tmp32;
+
+ S0 = S[ 0 ];
+ S1 = S[ 1 ];
+ A0_neg = -A[ 0 ];
+ A1_neg = -A[ 1 ];
+ for( k = 0; k < len; k++ ) {
+ /* S[ 0 ], S[ 1 ]: Q13 */
+ in16 = in[ k ];
+ out32 = SKP_SMLABB( S0, in16, B[ 0 ] );
+
+ S0 = SKP_SMLABB( S1, in16, B[ 1 ] );
+ S0 += SKP_LSHIFT( SKP_SMULWB( out32, A0_neg ), 3 );
+
+ S1 = SKP_LSHIFT( SKP_SMULWB( out32, A1_neg ), 3 );
+ S1 = SKP_SMLABB( S1, in16, B[ 2 ] );
+ tmp32 = SKP_RSHIFT_ROUND( out32, 13 ) + 1;
+ out[ k ] = (SKP_int16)SKP_SAT16( tmp32 );
+ }
+ S[ 0 ] = S0;
+ S[ 1 ] = S1;
+}
--- /dev/null
+++ b/src/SKP_Silk_biquad_alt.c
@@ -1,0 +1,73 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+/* *
+ * SKP_Silk_biquad_alt.c *
+ * *
+ * Second order ARMA filter *
+ * Can handle slowly varying filter coefficients *
+ * */
+#include "SKP_Silk_SigProc_FIX.h"
+
+
+/* Second order ARMA filter, alternative implementation */
+void SKP_Silk_biquad_alt(
+ const SKP_int16 *in, /* I: Input signal */
+ const SKP_int32 *B_Q28, /* I: MA coefficients [3] */
+ const SKP_int32 *A_Q28, /* I: AR coefficients [2] */
+ SKP_int32 *S, /* I/O: State vector [2] */
+ SKP_int16 *out, /* O: Output signal */
+ const SKP_int32 len /* I: Signal length (must be even) */
+)
+{
+ /* DIRECT FORM II TRANSPOSED (uses 2 element state vector) */
+ SKP_int k;
+ SKP_int32 inval, A0_U_Q28, A0_L_Q28, A1_U_Q28, A1_L_Q28, out32_Q14;
+
+ /* Negate A_Q28 values and split in two parts */
+ A0_L_Q28 = ( -A_Q28[ 0 ] ) & 0x00003FFF; /* lower part */
+ A0_U_Q28 = SKP_RSHIFT( -A_Q28[ 0 ], 14 ); /* upper part */
+ A1_L_Q28 = ( -A_Q28[ 1 ] ) & 0x00003FFF; /* lower part */
+ A1_U_Q28 = SKP_RSHIFT( -A_Q28[ 1 ], 14 ); /* upper part */
+
+ for( k = 0; k < len; k++ ) {
+ /* S[ 0 ], S[ 1 ]: Q12 */
+ inval = in[ k ];
+ out32_Q14 = SKP_LSHIFT( SKP_SMLAWB( S[ 0 ], B_Q28[ 0 ], inval ), 2 );
+
+ S[ 0 ] = S[1] + SKP_RSHIFT( SKP_SMULWB( out32_Q14, A0_L_Q28 ), 14 );
+ S[ 0 ] = SKP_SMLAWB( S[ 0 ], out32_Q14, A0_U_Q28 );
+ S[ 0 ] = SKP_SMLAWB( S[ 0 ], B_Q28[ 1 ], inval);
+
+ S[ 1 ] = SKP_RSHIFT( SKP_SMULWB( out32_Q14, A1_L_Q28 ), 14 );
+ S[ 1 ] = SKP_SMLAWB( S[ 1 ], out32_Q14, A1_U_Q28 );
+ S[ 1 ] = SKP_SMLAWB( S[ 1 ], B_Q28[ 2 ], inval );
+
+ /* Scale back to Q0 and saturate */
+ out[ k ] = (SKP_int16)SKP_SAT16( SKP_RSHIFT( out32_Q14, 14 ) + 2 );
+ }
+}
--- /dev/null
+++ b/src/SKP_Silk_burg_modified.c
@@ -1,0 +1,228 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+/* *
+ * SKP_Silk_burg_modified.c *
+ * *
+ * Calculates the reflection coefficients from the input vector *
+ * Input vector contains nb_subfr sub vectors of length L_sub + D *
+ * *
+ * Copyright 2009 (c), Skype Limited *
+ * Date: 100105 *
+ */
+
+#include "SKP_Silk_SigProc_FIX.h"
+
+#define MAX_FRAME_SIZE 544 // subfr_length * nb_subfr = ( 0.005 * 24000 + 16 ) * 4 = 544
+#define MAX_NB_SUBFR 4
+
+#define QA 24
+#define N_BITS_HEAD_ROOM 2
+#define MIN_RSHIFTS -16
+#define MAX_RSHIFTS (32 - QA)
+
+/* Compute reflection coefficients from input signal */
+void SKP_Silk_burg_modified(
+ SKP_int32 *res_nrg, /* O residual energy */
+ SKP_int *res_nrg_Q, /* O residual energy Q value */
+ SKP_int32 A_Q16[], /* O prediction coefficients (length order) */
+ const SKP_int16 x[], /* I input signal, length: nb_subfr * ( D + subfr_length ) */
+ const SKP_int subfr_length, /* I input signal subframe length (including D preceeding samples) */
+ const SKP_int nb_subfr, /* I number of subframes stacked in x */
+ const SKP_int32 WhiteNoiseFrac_Q32, /* I fraction added to zero-lag autocorrelation */
+ const SKP_int D /* I order */
+)
+{
+ SKP_int k, n, s, lz, rshifts, rshifts_extra;
+ SKP_int32 C0, num, nrg, rc_Q31, Atmp_QA, Atmp1, tmp1, tmp2, x1, x2;
+ const SKP_int16 *x_ptr;
+
+ SKP_int32 C_first_row[ SigProc_MAX_ORDER_LPC ];
+ SKP_int32 C_last_row[ SigProc_MAX_ORDER_LPC ];
+ SKP_int32 Af_QA[ SigProc_MAX_ORDER_LPC ];
+
+ SKP_int32 CAf[ SigProc_MAX_ORDER_LPC + 1 ];
+ SKP_int32 CAb[ SigProc_MAX_ORDER_LPC + 1 ];
+
+ SKP_assert( subfr_length * nb_subfr <= MAX_FRAME_SIZE );
+ SKP_assert( nb_subfr <= MAX_NB_SUBFR );
+
+
+ /* Compute autocorrelations, added over subframes */
+ SKP_Silk_sum_sqr_shift( &C0, &rshifts, x, nb_subfr * subfr_length );
+ if( rshifts > MAX_RSHIFTS ) {
+ C0 = SKP_LSHIFT32( C0, rshifts - MAX_RSHIFTS );
+ SKP_assert( C0 > 0 );
+ rshifts = MAX_RSHIFTS;
+ } else {
+ lz = SKP_Silk_CLZ32( C0 ) - 1;
+ rshifts_extra = N_BITS_HEAD_ROOM - lz;
+ if( rshifts_extra > 0 ) {
+ rshifts_extra = SKP_min( rshifts_extra, MAX_RSHIFTS - rshifts );
+ C0 = SKP_RSHIFT32( C0, rshifts_extra );
+ } else {
+ rshifts_extra = SKP_max( rshifts_extra, MIN_RSHIFTS - rshifts );
+ C0 = SKP_LSHIFT32( C0, -rshifts_extra );
+ }
+ rshifts += rshifts_extra;
+ }
+ SKP_memset( C_first_row, 0, SigProc_MAX_ORDER_LPC * sizeof( SKP_int32 ) );
+ if( rshifts > 0 ) {
+ for( s = 0; s < nb_subfr; s++ ) {
+ x_ptr = x + s * subfr_length;
+ for( n = 1; n < D + 1; n++ ) {
+ C_first_row[ n - 1 ] += (SKP_int32)SKP_RSHIFT64(
+ SKP_Silk_inner_prod16_aligned_64( x_ptr, x_ptr + n, subfr_length - n ), rshifts );
+ }
+ }
+ } else {
+ for( s = 0; s < nb_subfr; s++ ) {
+ x_ptr = x + s * subfr_length;
+ for( n = 1; n < D + 1; n++ ) {
+ C_first_row[ n - 1 ] += SKP_LSHIFT32(
+ SKP_Silk_inner_prod_aligned( x_ptr, x_ptr + n, subfr_length - n ), -rshifts );
+ }
+ }
+ }
+ SKP_memcpy( C_last_row, C_first_row, SigProc_MAX_ORDER_LPC * sizeof( SKP_int32 ) );
+
+ /* Initialize */
+ CAb[ 0 ] = CAf[ 0 ] = C0 + SKP_SMMUL( WhiteNoiseFrac_Q32, C0 ) + 1; // Q(-rshifts)
+
+ for( n = 0; n < D; n++ ) {
+ /* Update first row of correlation matrix (without first element) */
+ /* Update last row of correlation matrix (without last element, stored in reversed order) */
+ /* Update C * Af */
+ /* Update C * flipud(Af) (stored in reversed order) */
+ if( rshifts > -2 ) {
+ for( s = 0; s < nb_subfr; s++ ) {
+ x_ptr = x + s * subfr_length;
+ x1 = -SKP_LSHIFT32( (SKP_int32)x_ptr[ n ], 16 - rshifts ); // Q(16-rshifts)
+ x2 = -SKP_LSHIFT32( (SKP_int32)x_ptr[ subfr_length - n - 1 ], 16 - rshifts ); // Q(16-rshifts)
+ tmp1 = SKP_LSHIFT32( (SKP_int32)x_ptr[ n ], QA - 16 ); // Q(QA-16)
+ tmp2 = SKP_LSHIFT32( (SKP_int32)x_ptr[ subfr_length - n - 1 ], QA - 16 ); // Q(QA-16)
+ for( k = 0; k < n; k++ ) {
+ C_first_row[ k ] = SKP_SMLAWB( C_first_row[ k ], x1, x_ptr[ n - k - 1 ] ); // Q( -rshifts )
+ C_last_row[ k ] = SKP_SMLAWB( C_last_row[ k ], x2, x_ptr[ subfr_length - n + k ] ); // Q( -rshifts )
+ Atmp_QA = Af_QA[ k ];
+ tmp1 = SKP_SMLAWB( tmp1, Atmp_QA, x_ptr[ n - k - 1 ] ); // Q(QA-16)
+ tmp2 = SKP_SMLAWB( tmp2, Atmp_QA, x_ptr[ subfr_length - n + k ] ); // Q(QA-16)
+ }
+ tmp1 = SKP_LSHIFT32( -tmp1, 32 - QA - rshifts ); // Q(16-rshifts)
+ tmp2 = SKP_LSHIFT32( -tmp2, 32 - QA - rshifts ); // Q(16-rshifts)
+ for( k = 0; k <= n; k++ ) {
+ CAf[ k ] = SKP_SMLAWB( CAf[ k ], tmp1, x_ptr[ n - k ] ); // Q( -rshift )
+ CAb[ k ] = SKP_SMLAWB( CAb[ k ], tmp2, x_ptr[ subfr_length - n + k - 1 ] ); // Q( -rshift )
+ }
+ }
+ } else {
+ for( s = 0; s < nb_subfr; s++ ) {
+ x_ptr = x + s * subfr_length;
+ x1 = -SKP_LSHIFT32( (SKP_int32)x_ptr[ n ], -rshifts ); // Q( -rshifts )
+ x2 = -SKP_LSHIFT32( (SKP_int32)x_ptr[ subfr_length - n - 1 ], -rshifts ); // Q( -rshifts )
+ tmp1 = SKP_LSHIFT32( (SKP_int32)x_ptr[ n ], 17 ); // Q17
+ tmp2 = SKP_LSHIFT32( (SKP_int32)x_ptr[ subfr_length - n - 1 ], 17 ); // Q17
+ for( k = 0; k < n; k++ ) {
+ C_first_row[ k ] = SKP_MLA( C_first_row[ k ], x1, x_ptr[ n - k - 1 ] ); // Q( -rshifts )
+ C_last_row[ k ] = SKP_MLA( C_last_row[ k ], x2, x_ptr[ subfr_length - n + k ] ); // Q( -rshifts )
+ Atmp1 = SKP_RSHIFT_ROUND( Af_QA[ k ], QA - 17 ); // Q17
+ tmp1 = SKP_MLA( tmp1, x_ptr[ n - k - 1 ], Atmp1 ); // Q17
+ tmp2 = SKP_MLA( tmp2, x_ptr[ subfr_length - n + k ], Atmp1 ); // Q17
+ }
+ tmp1 = -tmp1; // Q17
+ tmp2 = -tmp2; // Q17
+ for( k = 0; k <= n; k++ ) {
+ CAf[ k ] = SKP_SMLAWW( CAf[ k ], tmp1,
+ SKP_LSHIFT32( (SKP_int32)x_ptr[ n - k ], -rshifts - 1 ) ); // Q( -rshift )
+ CAb[ k ] = SKP_SMLAWW( CAb[ k ], tmp2,
+ SKP_LSHIFT32( (SKP_int32)x_ptr[ subfr_length - n + k - 1 ], -rshifts - 1 ) );// Q( -rshift )
+ }
+ }
+ }
+
+ /* Calculate nominator and denominator for the next order reflection (parcor) coefficient */
+ tmp1 = C_first_row[ n ]; // Q( -rshifts )
+ tmp2 = C_last_row[ n ]; // Q( -rshifts )
+ num = 0; // Q( -rshifts )
+ nrg = SKP_ADD32( CAb[ 0 ], CAf[ 0 ] ); // Q( 1-rshifts )
+ for( k = 0; k < n; k++ ) {
+ Atmp_QA = Af_QA[ k ];
+ lz = SKP_Silk_CLZ32( SKP_abs( Atmp_QA ) ) - 1;
+ lz = SKP_min( 32 - QA, lz );
+ Atmp1 = SKP_LSHIFT32( Atmp_QA, lz ); // Q( QA + lz )
+
+ tmp1 = SKP_ADD_LSHIFT32( tmp1, SKP_SMMUL( C_last_row[ n - k - 1 ], Atmp1 ), 32 - QA - lz ); // Q( -rshifts )
+ tmp2 = SKP_ADD_LSHIFT32( tmp2, SKP_SMMUL( C_first_row[ n - k - 1 ], Atmp1 ), 32 - QA - lz ); // Q( -rshifts )
+ num = SKP_ADD_LSHIFT32( num, SKP_SMMUL( CAb[ n - k ], Atmp1 ), 32 - QA - lz ); // Q( -rshifts )
+ nrg = SKP_ADD_LSHIFT32( nrg, SKP_SMMUL( SKP_ADD32( CAb[ k + 1 ], CAf[ k + 1 ] ),
+ Atmp1 ), 32 - QA - lz ); // Q( 1-rshifts )
+ }
+ CAf[ n + 1 ] = tmp1; // Q( -rshifts )
+ CAb[ n + 1 ] = tmp2; // Q( -rshifts )
+ num = SKP_ADD32( num, tmp2 ); // Q( -rshifts )
+ num = SKP_LSHIFT32( -num, 1 ); // Q( 1-rshifts )
+
+ /* Calculate the next order reflection (parcor) coefficient */
+ if( SKP_abs( num ) < nrg ) {
+ rc_Q31 = SKP_DIV32_varQ( num, nrg, 31 );
+ } else {
+ /* Negative energy or ratio too high; set remaining coefficients to zero and exit loop */
+ SKP_memset( &Af_QA[ n ], 0, ( D - n ) * sizeof( SKP_int32 ) );
+ SKP_assert( 0 );
+ break;
+ }
+
+ /* Update the AR coefficients */
+ for( k = 0; k < (n + 1) >> 1; k++ ) {
+ tmp1 = Af_QA[ k ]; // QA
+ tmp2 = Af_QA[ n - k - 1 ]; // QA
+ Af_QA[ k ] = SKP_ADD_LSHIFT32( tmp1, SKP_SMMUL( tmp2, rc_Q31 ), 1 ); // QA
+ Af_QA[ n - k - 1 ] = SKP_ADD_LSHIFT32( tmp2, SKP_SMMUL( tmp1, rc_Q31 ), 1 ); // QA
+ }
+ Af_QA[ n ] = SKP_RSHIFT32( rc_Q31, 31 - QA ); // QA
+
+ /* Update C * Af and C * Ab */
+ for( k = 0; k <= n + 1; k++ ) {
+ tmp1 = CAf[ k ]; // Q( -rshifts )
+ tmp2 = CAb[ n - k + 1 ]; // Q( -rshifts )
+ CAf[ k ] = SKP_ADD_LSHIFT32( tmp1, SKP_SMMUL( tmp2, rc_Q31 ), 1 ); // Q( -rshifts )
+ CAb[ n - k + 1 ] = SKP_ADD_LSHIFT32( tmp2, SKP_SMMUL( tmp1, rc_Q31 ), 1 ); // Q( -rshifts )
+ }
+ }
+
+ /* Return residual energy */
+ nrg = CAf[ 0 ]; // Q( -rshifts )
+ tmp1 = 1 << 16; // Q16
+ for( k = 0; k < D; k++ ) {
+ Atmp1 = SKP_RSHIFT_ROUND( Af_QA[ k ], QA - 16 ); // Q16
+ nrg = SKP_SMLAWW( nrg, CAf[ k + 1 ], Atmp1 ); // Q( -rshifts )
+ tmp1 = SKP_SMLAWW( tmp1, Atmp1, Atmp1 ); // Q16
+ A_Q16[ k ] = -Atmp1;
+ }
+ *res_nrg = SKP_SMLAWW( nrg, SKP_SMMUL( WhiteNoiseFrac_Q32, C0 ), -tmp1 ); // Q( -rshifts )
+ *res_nrg_Q = -rshifts;
+}
--- /dev/null
+++ b/src/SKP_Silk_bwexpander.c
@@ -1,0 +1,49 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_SigProc_FIX.h"
+
+/* Chirp (bandwidth expand) LP AR filter */
+void SKP_Silk_bwexpander(
+ SKP_int16 *ar, /* I/O AR filter to be expanded (without leading 1) */
+ const SKP_int d, /* I Length of ar */
+ SKP_int32 chirp_Q16 /* I Chirp factor (typically in the range 0 to 1) */
+)
+{
+ SKP_int i;
+ SKP_int32 chirp_minus_one_Q16;
+
+ chirp_minus_one_Q16 = chirp_Q16 - 65536;
+
+ /* NB: Dont use SKP_SMULWB, instead of SKP_RSHIFT_ROUND( SKP_MUL() , 16 ), below. */
+ /* Bias in SKP_SMULWB can lead to unstable filters */
+ for( i = 0; i < d - 1; i++ ) {
+ ar[ i ] = (SKP_int16)SKP_RSHIFT_ROUND( SKP_MUL( chirp_Q16, ar[ i ] ), 16 );
+ chirp_Q16 += SKP_RSHIFT_ROUND( SKP_MUL( chirp_Q16, chirp_minus_one_Q16 ), 16 );
+ }
+ ar[ d - 1 ] = (SKP_int16)SKP_RSHIFT_ROUND( SKP_MUL( chirp_Q16, ar[ d - 1 ] ), 16 );
+}
--- /dev/null
+++ b/src/SKP_Silk_bwexpander_32.c
@@ -1,0 +1,46 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_SigProc_FIX.h"
+
+/* Chirp (bandwidth expand) LP AR filter */
+void SKP_Silk_bwexpander_32(
+ SKP_int32 *ar, /* I/O AR filter to be expanded (without leading 1) */
+ const SKP_int d, /* I Length of ar */
+ SKP_int32 chirp_Q16 /* I Chirp factor in Q16 */
+)
+{
+ SKP_int i;
+ SKP_int32 tmp_chirp_Q16;
+
+ tmp_chirp_Q16 = chirp_Q16;
+ for( i = 0; i < d - 1; i++ ) {
+ ar[ i ] = SKP_SMULWW( ar[ i ], tmp_chirp_Q16 );
+ tmp_chirp_Q16 = SKP_SMULWW( chirp_Q16, tmp_chirp_Q16 );
+ }
+ ar[ d - 1 ] = SKP_SMULWW( ar[ d - 1 ], tmp_chirp_Q16 );
+}
--- /dev/null
+++ b/src/SKP_Silk_code_signs.c
@@ -1,0 +1,87 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_main.h"
+
+//#define SKP_enc_map(a) ((a) > 0 ? 1 : 0)
+//#define SKP_dec_map(a) ((a) > 0 ? 1 : -1)
+/* shifting avoids if-statement */
+#define SKP_enc_map(a) ( SKP_RSHIFT( (a), 15 ) + 1 )
+#define SKP_dec_map(a) ( SKP_LSHIFT( (a), 1 ) - 1 )
+
+/* Encodes signs of excitation */
+void SKP_Silk_encode_signs(
+ SKP_Silk_range_coder_state *sRC, /* I/O Range coder state */
+ const SKP_int q[], /* I Pulse signal */
+ const SKP_int length, /* I Length of input */
+ const SKP_int sigtype, /* I Signal type */
+ const SKP_int QuantOffsetType, /* I Quantization offset type */
+ const SKP_int RateLevelIndex /* I Rate level index */
+)
+{
+ SKP_int i;
+ SKP_int inData;
+ const SKP_uint16 *cdf;
+
+ i = SKP_SMULBB( N_RATE_LEVELS - 1, SKP_LSHIFT( sigtype, 1 ) + QuantOffsetType ) + RateLevelIndex;
+ cdf = SKP_Silk_sign_CDF[ i ];
+
+ for( i = 0; i < length; i++ ) {
+ if( q[ i ] != 0 ) {
+ inData = SKP_enc_map( q[ i ] ); /* - = 0, + = 1 */
+ SKP_Silk_range_encoder( sRC, inData, cdf );
+ }
+ }
+}
+
+/* Decodes signs of excitation */
+void SKP_Silk_decode_signs(
+ SKP_Silk_range_coder_state *sRC, /* I/O Range coder state */
+ SKP_int q[], /* I/O pulse signal */
+ const SKP_int length, /* I length of output */
+ const SKP_int sigtype, /* I Signal type */
+ const SKP_int QuantOffsetType, /* I Quantization offset type */
+ const SKP_int RateLevelIndex /* I Rate Level Index */
+)
+{
+ SKP_int i;
+ SKP_int data;
+ const SKP_uint16 *cdf;
+
+ i = SKP_SMULBB( N_RATE_LEVELS - 1, SKP_LSHIFT( sigtype, 1 ) + QuantOffsetType ) + RateLevelIndex;
+ cdf = SKP_Silk_sign_CDF[ i ];
+
+ for( i = 0; i < length; i++ ) {
+ if( q[ i ] > 0 ) {
+ SKP_Silk_range_decoder( &data, sRC, cdf, 1 );
+ /* attach sign */
+ /* implementation with shift, subtraction, multiplication */
+ q[ i ] *= SKP_dec_map( data );
+ }
+ }
+}
+
--- /dev/null
+++ b/src/SKP_Silk_common_pitch_est_defines.h
@@ -1,0 +1,76 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#ifndef SIGPROC_COMMON_PITCH_EST_DEFINES_H
+#define SIGPROC_COMMON_PITCH_EST_DEFINES_H
+
+#include "SKP_Silk_SigProc_FIX.h"
+
+/************************************************************/
+/* Definitions For Fix pitch estimator */
+/************************************************************/
+
+#define PITCH_EST_MAX_FS_KHZ 24 /* Maximum sampling frequency used */
+
+#define PITCH_EST_FRAME_LENGTH_MS 40 /* 40 ms */
+
+#define PITCH_EST_MAX_FRAME_LENGTH (PITCH_EST_FRAME_LENGTH_MS * PITCH_EST_MAX_FS_KHZ)
+#define PITCH_EST_MAX_FRAME_LENGTH_ST_1 (PITCH_EST_MAX_FRAME_LENGTH >> 2)
+#define PITCH_EST_MAX_FRAME_LENGTH_ST_2 (PITCH_EST_MAX_FRAME_LENGTH >> 1)
+#define PITCH_EST_MAX_SF_FRAME_LENGTH (PITCH_EST_SUB_FRAME * PITCH_EST_MAX_FS_KHZ)
+
+#define PITCH_EST_MAX_LAG_MS 18 /* 18 ms -> 56 Hz */
+#define PITCH_EST_MIN_LAG_MS 2 /* 2 ms -> 500 Hz */
+#define PITCH_EST_MAX_LAG (PITCH_EST_MAX_LAG_MS * PITCH_EST_MAX_FS_KHZ)
+#define PITCH_EST_MIN_LAG (PITCH_EST_MIN_LAG_MS * PITCH_EST_MAX_FS_KHZ)
+
+#define PITCH_EST_NB_SUBFR 4
+
+#define PITCH_EST_D_SRCH_LENGTH 24
+
+#define PITCH_EST_MAX_DECIMATE_STATE_LENGTH 7
+
+#define PITCH_EST_NB_STAGE3_LAGS 5
+
+#define PITCH_EST_NB_CBKS_STAGE2 3
+#define PITCH_EST_NB_CBKS_STAGE2_EXT 11
+
+#define PITCH_EST_CB_mn2 1
+#define PITCH_EST_CB_mx2 2
+
+#define PITCH_EST_NB_CBKS_STAGE3_MAX 34
+#define PITCH_EST_NB_CBKS_STAGE3_MID 24
+#define PITCH_EST_NB_CBKS_STAGE3_MIN 16
+
+extern const SKP_int16 SKP_Silk_CB_lags_stage2[PITCH_EST_NB_SUBFR][PITCH_EST_NB_CBKS_STAGE2_EXT];
+extern const SKP_int16 SKP_Silk_CB_lags_stage3[PITCH_EST_NB_SUBFR][PITCH_EST_NB_CBKS_STAGE3_MAX];
+extern const SKP_int16 SKP_Silk_Lag_range_stage3[ SigProc_PITCH_EST_MAX_COMPLEX + 1 ] [ PITCH_EST_NB_SUBFR ][ 2 ];
+extern const SKP_int16 SKP_Silk_cbk_sizes_stage3[ SigProc_PITCH_EST_MAX_COMPLEX + 1 ];
+extern const SKP_int16 SKP_Silk_cbk_offsets_stage3[ SigProc_PITCH_EST_MAX_COMPLEX + 1 ];
+
+#endif
+
--- /dev/null
+++ b/src/SKP_Silk_control_codec_FIX.c
@@ -1,0 +1,656 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_main_FIX.h"
+
+/* Control encoder SNR */
+SKP_int SKP_Silk_control_encoder_FIX(
+ SKP_Silk_encoder_state_FIX *psEnc, /* I/O Pointer to Silk encoder state */
+ const SKP_int API_fs_kHz, /* I External (API) sampling rate (kHz) */
+ const SKP_int PacketSize_ms, /* I Packet length (ms) */
+ SKP_int32 TargetRate_bps, /* I Target max bitrate (bps) (used if SNR_dB == 0) */
+ const SKP_int PacketLoss_perc, /* I Packet loss rate (in percent) */
+ const SKP_int INBandFec_enabled, /* I Enable (1) / disable (0) inband FEC */
+ const SKP_int DTX_enabled, /* I Enable / disable DTX */
+ const SKP_int InputFramesize_ms, /* I Inputframe in ms */
+ const SKP_int Complexity /* I Complexity (0->low; 1->medium; 2->high) */
+)
+{
+ SKP_int32 LBRRRate_thres_bps;
+ SKP_int k, fs_kHz, ret = 0;
+ SKP_int32 frac_Q6;
+ const SKP_int32 *rateTable;
+
+ /* State machine for the SWB/WB switching */
+ fs_kHz = psEnc->sCmn.fs_kHz;
+
+ /* Only switch during low speech activity, when no frames are sitting in the payload buffer */
+ if( API_fs_kHz == 8 || fs_kHz == 0 || API_fs_kHz < fs_kHz ) {
+ // Switching is not possible, encoder just initialized, or internal mode higher than external
+ fs_kHz = API_fs_kHz;
+ } else {
+
+ /* Resample all valid data in x_buf. Resampling the last part gets rid of a click, 5ms after switching */
+ /* this is because the same state is used when downsampling in API.c and is then up to date */
+ /* the click immidiatly after switching is most of the time still there */
+
+ if( psEnc->sCmn.fs_kHz == 24 ) {
+ /* Accumulate the difference between the target rate and limit */
+ if( psEnc->sCmn.fs_kHz_changed == 0 ) {
+ psEnc->sCmn.bitrateDiff += SKP_MUL( InputFramesize_ms, TargetRate_bps - SWB2WB_BITRATE_BPS_INITIAL );
+ } else {
+ psEnc->sCmn.bitrateDiff += SKP_MUL( InputFramesize_ms, TargetRate_bps - SWB2WB_BITRATE_BPS );
+ }
+ psEnc->sCmn.bitrateDiff = SKP_min( psEnc->sCmn.bitrateDiff, 0 );
+
+ /* Check if we should switch from 24 to 16 kHz */
+#if SWITCH_TRANSITION_FILTERING
+ if( ( psEnc->sCmn.sLP.transition_frame_no == 0 ) && /* Transition phase not active */
+ ( psEnc->sCmn.bitrateDiff <= -ACCUM_BITS_DIFF_THRESHOLD || psEnc->sCmn.sSWBdetect.WB_detected == 1 ) &&
+ ( psEnc->speech_activity_Q8 < 128 && psEnc->sCmn.nFramesInPayloadBuf == 0 ) ) {
+ psEnc->sCmn.sLP.transition_frame_no = 1; /* Begin transition phase */
+ psEnc->sCmn.sLP.mode = 0; /* Switch down */
+ }
+
+ if( ( psEnc->sCmn.sLP.transition_frame_no >= TRANSITION_FRAMES_DOWN ) && ( psEnc->sCmn.sLP.mode == 0 ) && /* Transition phase complete, ready to switch */
+#else
+ if( ( psEnc->sCmn.bitrateDiff <= -ACCUM_BITS_DIFF_THRESHOLD || psEnc->sCmn.sSWBdetect.WB_detected == 1 ) &&
+#endif
+ ( psEnc->speech_activity_Q8 < 128 && psEnc->sCmn.nFramesInPayloadBuf == 0 ) ) {
+
+ SKP_int16 x_buf[ 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ];
+ SKP_int16 x_bufout[ 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ];
+
+ psEnc->sCmn.bitrateDiff = 0;
+ fs_kHz = 16;
+
+ SKP_memcpy( x_buf, psEnc->x_buf, ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) * sizeof( SKP_int16 ) );
+
+ SKP_memset( psEnc->sCmn.resample24To16state, 0, sizeof( psEnc->sCmn.resample24To16state ) );
+
+#if LOW_COMPLEXITY_ONLY
+ {
+ SKP_int16 scratch[ ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) + SigProc_Resample_2_3_coarse_NUM_FIR_COEFS - 1 ];
+ SKP_Silk_resample_2_3_coarse( &x_bufout[ 0 ], psEnc->sCmn.resample24To16state, &x_buf[ 0 ], SKP_LSHIFT( psEnc->sCmn.frame_length, 1 ) + psEnc->sCmn.la_shape, (SKP_int16*)scratch );
+ }
+#else
+ SKP_Silk_resample_2_3( &x_bufout[ 0 ], psEnc->sCmn.resample24To16state, &x_buf[ 0 ], SKP_LSHIFT( psEnc->sCmn.frame_length, 1 ) + psEnc->sCmn.la_shape );
+#endif
+
+ /* set the first frame to zero, no performance difference was noticed though */
+ SKP_memset( x_bufout, 0, 320 * sizeof( SKP_int16 ) );
+ SKP_memcpy( psEnc->x_buf, x_bufout, ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) * sizeof( SKP_int16 ) );
+
+#if SWITCH_TRANSITION_FILTERING
+ psEnc->sCmn.sLP.transition_frame_no = 0; /* Transition phase complete */
+#endif
+ }
+ } else if( psEnc->sCmn.fs_kHz == 16 ) {
+
+ /* Check if we should switch from 16 to 24 kHz */
+#if SWITCH_TRANSITION_FILTERING
+ if( ( psEnc->sCmn.sLP.transition_frame_no == 0 ) && /* No transition phase running, ready to switch */
+#else
+ if(
+#endif
+ ( API_fs_kHz > psEnc->sCmn.fs_kHz && TargetRate_bps >= WB2SWB_BITRATE_BPS && psEnc->sCmn.sSWBdetect.WB_detected == 0 ) &&
+ ( psEnc->speech_activity_Q8 < 128 && psEnc->sCmn.nFramesInPayloadBuf == 0 ) ) {
+
+ SKP_int16 x_buf[ 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ];
+ SKP_int16 x_bufout[ 3 * ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) / 2 ];
+ SKP_int32 resample16To24state[ 11 ];
+
+ psEnc->sCmn.bitrateDiff = 0;
+ fs_kHz = 24;
+
+ SKP_memcpy( x_buf, psEnc->x_buf, ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) * sizeof( SKP_int16 ) );
+
+ SKP_memset( resample16To24state, 0, sizeof(resample16To24state) );
+
+ SKP_Silk_resample_3_2( &x_bufout[ 0 ], resample16To24state, &x_buf[ 0 ], SKP_LSHIFT( psEnc->sCmn.frame_length, 1 ) + psEnc->sCmn.la_shape );
+
+ /* set the first frame to zero, no performance difference was noticed though */
+ SKP_memset( x_bufout, 0, 480 * sizeof( SKP_int16 ) );
+ SKP_memcpy( psEnc->x_buf, x_bufout, ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) * sizeof( SKP_int16 ) );
+#if SWITCH_TRANSITION_FILTERING
+ psEnc->sCmn.sLP.mode = 1; /* Switch up */
+#endif
+ } else {
+ /* accumulate the difference between the target rate and limit */
+ psEnc->sCmn.bitrateDiff += SKP_MUL( InputFramesize_ms, TargetRate_bps - WB2MB_BITRATE_BPS );
+ psEnc->sCmn.bitrateDiff = SKP_min( psEnc->sCmn.bitrateDiff, 0 );
+
+ /* Check if we should switch from 16 to 12 kHz */
+#if SWITCH_TRANSITION_FILTERING
+ if( ( psEnc->sCmn.sLP.transition_frame_no == 0 ) && /* Transition phase not active */
+ ( psEnc->sCmn.bitrateDiff <= -ACCUM_BITS_DIFF_THRESHOLD ) &&
+ ( psEnc->speech_activity_Q8 < 128 && psEnc->sCmn.nFramesInPayloadBuf == 0 ) ) {
+ psEnc->sCmn.sLP.transition_frame_no = 1; /* Begin transition phase */
+ psEnc->sCmn.sLP.mode = 0; /* Switch down */
+ }
+
+ if( ( psEnc->sCmn.sLP.transition_frame_no >= TRANSITION_FRAMES_DOWN ) && ( psEnc->sCmn.sLP.mode == 0 ) && /* Transition phase complete, ready to switch */
+#else
+ if( ( psEnc->sCmn.bitrateDiff <= -ACCUM_BITS_DIFF_THRESHOLD ) &&
+#endif
+ ( psEnc->speech_activity_Q8 < 128 && psEnc->sCmn.nFramesInPayloadBuf == 0 ) ) {
+
+ SKP_int16 x_buf[ 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ];
+
+ SKP_memcpy( x_buf, psEnc->x_buf, ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) * sizeof( SKP_int16 ) );
+
+ psEnc->sCmn.bitrateDiff = 0;
+ fs_kHz = 12;
+
+ if( API_fs_kHz == 24 ) {
+
+ /* Intermediate upsampling of x_bufFIX from 16 to 24 kHz */
+ SKP_int16 x_buf24[ 3 * ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) / 2 ];
+ SKP_int32 scratch[ 3 * ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) ];
+ SKP_int32 resample16To24state[ 11 ];
+
+ SKP_memset( resample16To24state, 0, sizeof( resample16To24state ) );
+ SKP_Silk_resample_3_2( &x_buf24[ 0 ], resample16To24state, &x_buf[ 0 ], SKP_LSHIFT( psEnc->sCmn.frame_length, 1 ) + psEnc->sCmn.la_shape );
+
+ /* Update the state of the resampler used in API.c, from 24 to 12 kHz */
+ SKP_memset( psEnc->sCmn.resample24To12state, 0, sizeof( psEnc->sCmn.resample24To12state ) );
+ SKP_Silk_resample_1_2_coarse( &x_buf24[ 0 ], psEnc->sCmn.resample24To12state, &x_buf[ 0 ], scratch, SKP_RSHIFT( SKP_SMULBB( 3, SKP_LSHIFT( psEnc->sCmn.frame_length, 1 ) + psEnc->sCmn.la_shape ), 2 ) );
+
+ /* set the first frame to zero, no performance difference was noticed though */
+ SKP_memset( x_buf, 0, 240 * sizeof( SKP_int16 ) );
+ SKP_memcpy( psEnc->x_buf, x_buf, ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) * sizeof( SKP_int16 ) );
+
+ } else if( API_fs_kHz == 16 ) {
+ SKP_int16 x_bufout[ 3 * ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) / 4 ];
+ SKP_memset( psEnc->sCmn.resample16To12state, 0, sizeof( psEnc->sCmn.resample16To12state ) );
+
+ SKP_Silk_resample_3_4( &x_bufout[ 0 ], psEnc->sCmn.resample16To12state, &x_buf[ 0 ], SKP_LSHIFT( psEnc->sCmn.frame_length, 1 ) + psEnc->sCmn.la_shape );
+
+ /* set the first frame to zero, no performance difference was noticed though */
+ SKP_memset( x_bufout, 0, 240 * sizeof( SKP_int16 ) );
+ SKP_memcpy( psEnc->x_buf, x_bufout, ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) * sizeof( SKP_int16 ) );
+ }
+#if SWITCH_TRANSITION_FILTERING
+ psEnc->sCmn.sLP.transition_frame_no = 0; /* Transition phase complete */
+#endif
+ }
+ }
+ } else if( psEnc->sCmn.fs_kHz == 12 ) {
+
+ /* Check if we should switch from 12 to 16 kHz */
+#if SWITCH_TRANSITION_FILTERING
+ if( ( psEnc->sCmn.sLP.transition_frame_no == 0 ) && /* No transition phase running, ready to switch */
+#else
+ if(
+#endif
+ ( API_fs_kHz > psEnc->sCmn.fs_kHz && TargetRate_bps >= MB2WB_BITRATE_BPS ) &&
+ ( psEnc->speech_activity_Q8 < 128 && psEnc->sCmn.nFramesInPayloadBuf == 0 ) ) {
+
+ SKP_int16 x_buf[ 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ];
+
+ SKP_memcpy( x_buf, psEnc->x_buf, ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) * sizeof( SKP_int16 ) );
+
+ psEnc->sCmn.bitrateDiff = 0;
+ fs_kHz = 16;
+
+ /* Reset state of the resampler to be used */
+ if( API_fs_kHz == 24 ) {
+
+ SKP_int16 x_bufout[ 2 * 2 * ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) / 3 ];
+
+ /* Intermediate upsampling of x_bufFIX from 12 to 24 kHz */
+ SKP_int16 x_buf24[ 2 * ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) ];
+ SKP_int32 scratch[ 3 * ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) ];
+ SKP_int32 resample12To24state[6];
+
+ SKP_memset( resample12To24state, 0, sizeof( resample12To24state ) );
+ SKP_Silk_resample_2_1_coarse( &x_buf[ 0 ], resample12To24state, &x_buf24[ 0 ], scratch, SKP_LSHIFT( psEnc->sCmn.frame_length, 1 ) + psEnc->sCmn.la_shape );
+
+ SKP_memset( psEnc->sCmn.resample24To16state, 0, sizeof( psEnc->sCmn.resample24To16state ) );
+
+#if LOW_COMPLEXITY_ONLY
+ SKP_assert( sizeof( SKP_int16 ) * ( 2 * ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) + SigProc_Resample_2_3_coarse_NUM_FIR_COEFS - 1 ) <= sizeof( scratch ) );
+ SKP_Silk_resample_2_3_coarse( &x_bufout[ 0 ], psEnc->sCmn.resample24To16state, &x_buf24[ 0 ], SKP_LSHIFT( SKP_LSHIFT( psEnc->sCmn.frame_length, 1 ) + psEnc->sCmn.la_shape, 1 ), (SKP_int16*)scratch );
+#else
+ SKP_Silk_resample_2_3( &x_bufout[ 0 ], psEnc->sCmn.resample24To16state, &x_buf24[ 0 ], SKP_LSHIFT( SKP_LSHIFT( psEnc->sCmn.frame_length, 1 ) + psEnc->sCmn.la_shape, 1 ) );
+#endif
+
+ /* set the first frame to zero, no performance difference was noticed though */
+ SKP_memset( x_bufout, 0, 320 * sizeof( SKP_int16 ) );
+ SKP_memcpy( psEnc->x_buf, x_bufout, ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) * sizeof( SKP_int16 ) );
+ }
+#if SWITCH_TRANSITION_FILTERING
+ psEnc->sCmn.sLP.mode = 1; /* Switch up */
+#endif
+ } else {
+ /* accumulate the difference between the target rate and limit */
+ psEnc->sCmn.bitrateDiff += SKP_MUL( InputFramesize_ms, TargetRate_bps - MB2NB_BITRATE_BPS );
+ psEnc->sCmn.bitrateDiff = SKP_min( psEnc->sCmn.bitrateDiff, 0 );
+
+ /* Check if we should switch from 12 to 8 kHz */
+#if SWITCH_TRANSITION_FILTERING
+ if( ( psEnc->sCmn.sLP.transition_frame_no == 0 ) && /* Transition phase not active */
+ ( psEnc->sCmn.bitrateDiff <= -ACCUM_BITS_DIFF_THRESHOLD ) &&
+ ( psEnc->speech_activity_Q8 < 128 && psEnc->sCmn.nFramesInPayloadBuf == 0 ) ) {
+ psEnc->sCmn.sLP.transition_frame_no = 1; /* Begin transition phase */
+ psEnc->sCmn.sLP.mode = 0; /* Switch down */
+ }
+
+ if( ( psEnc->sCmn.sLP.transition_frame_no >= TRANSITION_FRAMES_DOWN ) && ( psEnc->sCmn.sLP.mode == 0 ) &&
+#else
+ if( ( psEnc->sCmn.bitrateDiff <= -ACCUM_BITS_DIFF_THRESHOLD ) &&
+#endif
+ ( psEnc->speech_activity_Q8 < 128 && psEnc->sCmn.nFramesInPayloadBuf == 0 ) ) {
+
+ SKP_int16 x_buf[ 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ];
+
+ SKP_memcpy( x_buf, psEnc->x_buf, ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) * sizeof( SKP_int16 ) );
+
+ psEnc->sCmn.bitrateDiff = 0;
+ fs_kHz = 8;
+
+ if( API_fs_kHz == 24 ) {
+
+ SKP_int32 scratch[ 3 * ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) ];
+ /* Intermediate upsampling of x_buf from 12 to 24 kHz */
+ SKP_int16 x_buf24[ 2 * ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) ];
+ SKP_int32 resample12To24state[ 6 ];
+
+ SKP_memset( resample12To24state, 0, sizeof( resample12To24state ) );
+ SKP_Silk_resample_2_1_coarse( &x_buf[ 0 ], resample12To24state, &x_buf24[ 0 ], scratch, SKP_LSHIFT( psEnc->sCmn.frame_length, 1 ) + psEnc->sCmn.la_shape );
+
+ /* Update the state of the resampler used in API.c, from 24 to 8 kHz */
+ SKP_memset( psEnc->sCmn.resample24To8state, 0, sizeof( psEnc->sCmn.resample24To8state ) );
+ SKP_Silk_resample_1_3( &x_buf[ 0 ], psEnc->sCmn.resample24To8state, &x_buf24[ 0 ], SKP_LSHIFT( SKP_LSHIFT( psEnc->sCmn.frame_length, 1 ) + psEnc->sCmn.la_shape, 1 ) );
+
+ /* set the first frame to zero, no performance difference was noticed though */
+ SKP_memset( x_buf, 0, 160 * sizeof( SKP_int16 ) );
+ SKP_memcpy( psEnc->x_buf, x_buf, ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) * sizeof( SKP_int16 ) );
+
+ } else if( API_fs_kHz == 16 ) {
+ /* Intermediate upsampling of x_bufFIX from 12 to 16 kHz */
+ SKP_int16 x_buf16[ 3 * ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) / 2 ];
+ SKP_int32 resample12To16state[11];
+
+ SKP_memset( resample12To16state, 0, sizeof( resample12To16state ) );
+ SKP_Silk_resample_3_2( &x_buf16[ 0 ], resample12To16state, &x_buf[ 0 ], SKP_LSHIFT( psEnc->sCmn.frame_length, 1 ) + psEnc->sCmn.la_shape );
+
+ /* set the first frame to zero, no performance difference was noticed though */
+ SKP_memset( x_buf, 0, 160 * sizeof( SKP_int16 ) );
+ SKP_memcpy( psEnc->x_buf, x_buf, ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) * sizeof( SKP_int16 ) );
+
+ } else if( API_fs_kHz == 12 ) {
+ SKP_int16 x_bufout[ 2 * ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) / 3 ];
+ SKP_memset( psEnc->sCmn.resample12To8state, 0, sizeof( psEnc->sCmn.resample12To8state ) );
+#if LOW_COMPLEXITY_ONLY
+ {
+ SKP_int16 scratch[ ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) + SigProc_Resample_2_3_coarse_NUM_FIR_COEFS - 1 ];
+ SKP_Silk_resample_2_3_coarse( &x_bufout[ 0 ], psEnc->sCmn.resample12To8state, &x_buf[ 0 ],
+ SKP_LSHIFT( psEnc->sCmn.frame_length, 1 ) + psEnc->sCmn.la_shape, scratch );
+ }
+#else
+ SKP_Silk_resample_2_3( &x_bufout[ 0 ], psEnc->sCmn.resample12To8state, &x_buf[ 0 ], SKP_LSHIFT( psEnc->sCmn.frame_length, 1 ) + psEnc->sCmn.la_shape );
+#endif
+ /* set the first frame to zero, no performance difference was noticed though */
+ SKP_memset( x_bufout, 0, 160 * sizeof( SKP_int16 ) );
+ SKP_memcpy( psEnc->x_buf, x_bufout, ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) * sizeof( SKP_int16 ) );
+ }
+#if SWITCH_TRANSITION_FILTERING
+ psEnc->sCmn.sLP.transition_frame_no = 0; /* Transition phase complete */
+#endif
+ }
+ }
+ } else if( psEnc->sCmn.fs_kHz == 8 ) {
+
+ /* Check if we should switch from 8 to 12 kHz */
+#if SWITCH_TRANSITION_FILTERING
+ if( ( psEnc->sCmn.sLP.transition_frame_no == 0 ) && /* No transition phase running, ready to switch */
+#else
+ if(
+#endif
+ ( API_fs_kHz > psEnc->sCmn.fs_kHz && TargetRate_bps >= NB2MB_BITRATE_BPS ) &&
+ ( psEnc->speech_activity_Q8 < 128 && psEnc->sCmn.nFramesInPayloadBuf == 0 ) ) {
+
+ SKP_int16 x_buf[ 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ];
+
+ SKP_memcpy( x_buf, psEnc->x_buf, ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) * sizeof( SKP_int16 ) );
+
+ psEnc->sCmn.bitrateDiff = 0;
+ fs_kHz = 12;
+
+ /* Reset state of the resampler to be used */
+ if( API_fs_kHz == 24 ) {
+ SKP_int16 x_buf24[ 3 * ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) ];
+ SKP_int32 scratch[ 3 * 3 * ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) / 2 ];
+ SKP_int32 resample8To24state[ 7 ];
+
+ /* Intermediate upsampling of x_bufFIX from 8 to 24 kHz */
+ SKP_memset( resample8To24state, 0, sizeof( resample8To24state ) );
+ SKP_Silk_resample_3_1( &x_buf24[ 0 ], resample8To24state, &x_buf[ 0 ], SKP_LSHIFT( psEnc->sCmn.frame_length, 1 ) + psEnc->sCmn.la_shape );
+
+ SKP_memset( psEnc->sCmn.resample24To12state, 0, sizeof( psEnc->sCmn.resample24To12state ) );
+
+ SKP_Silk_resample_1_2_coarse( &x_buf24[ 0 ], psEnc->sCmn.resample24To12state, &x_buf[ 0 ], scratch, SKP_RSHIFT( SKP_SMULBB( 3, SKP_LSHIFT( psEnc->sCmn.frame_length, 1 ) + psEnc->sCmn.la_shape ), 1 ) );
+
+ /* set the first frame to zero, no performance difference was noticed though */
+ SKP_memset( x_buf, 0, 240 * sizeof( SKP_int16 ) );
+ SKP_memcpy( psEnc->x_buf, x_buf, ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) * sizeof( SKP_int16 ) );
+
+ } else if( API_fs_kHz == 16 ) {
+ SKP_int16 x_buf16[ 2 * ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) ];
+ SKP_int32 scratch[ 3 * ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) ];
+ SKP_int32 resample8To16state[ 6 ];
+
+ /* Intermediate upsampling of x_bufFIX from 8 to 16 kHz */
+ SKP_memset( resample8To16state, 0, sizeof( resample8To16state ) );
+ SKP_Silk_resample_2_1_coarse( &x_buf[ 0 ], resample8To16state, &x_buf16[ 0 ], scratch, SKP_LSHIFT( psEnc->sCmn.frame_length, 1 ) + psEnc->sCmn.la_shape );
+
+ SKP_memset( psEnc->sCmn.resample16To12state, 0, sizeof( psEnc->sCmn.resample16To12state ) );
+
+ SKP_Silk_resample_3_4( &x_buf[ 0 ], psEnc->sCmn.resample16To12state, &x_buf16[ 0 ], SKP_LSHIFT( SKP_LSHIFT( psEnc->sCmn.frame_length, 1 ) + psEnc->sCmn.la_shape, 1 ) );
+
+ /* set the first frame to zero, no performance difference was noticed though */
+ SKP_memset( x_buf, 0, 240 * sizeof( SKP_int16 ) );
+ SKP_memcpy( psEnc->x_buf, x_buf, ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) * sizeof( SKP_int16 ) );
+ }
+#if SWITCH_TRANSITION_FILTERING
+ psEnc->sCmn.sLP.mode = 1; /* Switch up */
+#endif
+ }
+ } else {
+ // Internal sample frequency not supported!
+ SKP_assert( 0 );
+ }
+ }
+
+#if SWITCH_TRANSITION_FILTERING
+ /* After switching up, stop transition filter during speech inactivity */
+ if( ( psEnc->sCmn.sLP.mode == 1 ) &&
+ ( psEnc->sCmn.sLP.transition_frame_no >= TRANSITION_FRAMES_UP ) &&
+ ( psEnc->speech_activity_Q8 < 128 ) &&
+ ( psEnc->sCmn.nFramesInPayloadBuf == 0 ) ) {
+
+ psEnc->sCmn.sLP.transition_frame_no = 0;
+
+ /* Reset transition filter state */
+ SKP_memset( psEnc->sCmn.sLP.In_LP_State, 0, 2 * sizeof( SKP_int32 ) );
+ }
+#endif
+
+
+
+ /* Set internal sampling frequency */
+ if( psEnc->sCmn.fs_kHz != fs_kHz ) {
+ /* reset part of the state */
+ SKP_memset( &psEnc->sShape, 0, sizeof( SKP_Silk_shape_state_FIX ) );
+ SKP_memset( &psEnc->sPrefilt, 0, sizeof( SKP_Silk_prefilter_state_FIX ) );
+ SKP_memset( &psEnc->sNSQ, 0, sizeof( SKP_Silk_nsq_state ) );
+ SKP_memset( &psEnc->sPred, 0, sizeof( SKP_Silk_predict_state_FIX ) );
+ SKP_memset( psEnc->sNSQ.xq, 0, ( 2 * MAX_FRAME_LENGTH ) * sizeof( SKP_int16 ) );
+ SKP_memset( psEnc->sNSQ_LBRR.xq, 0, ( 2 * MAX_FRAME_LENGTH ) * sizeof( SKP_int16 ) );
+ SKP_memset( psEnc->sCmn.LBRR_buffer, 0, MAX_LBRR_DELAY * sizeof( SKP_SILK_LBRR_struct ) );
+#if SWITCH_TRANSITION_FILTERING
+ SKP_memset( psEnc->sCmn.sLP.In_LP_State, 0, 2 * sizeof( SKP_int32 ) );
+ if( psEnc->sCmn.sLP.mode == 1 ) {
+ /* Begin transition phase */
+ psEnc->sCmn.sLP.transition_frame_no = 1;
+ } else {
+ /* End transition phase */
+ psEnc->sCmn.sLP.transition_frame_no = 0;
+ }
+#endif
+ psEnc->sCmn.inputBufIx = 0;
+ psEnc->sCmn.nFramesInPayloadBuf = 0;
+ psEnc->sCmn.nBytesInPayloadBuf = 0;
+ psEnc->sCmn.oldest_LBRR_idx = 0;
+ psEnc->sCmn.TargetRate_bps = 0; /* ensures that psEnc->SNR_dB is recomputed */
+
+ SKP_memset( psEnc->sPred.prev_NLSFq_Q15, 0, MAX_LPC_ORDER * sizeof( SKP_int ) );
+
+ /* Initialize non-zero parameters */
+ psEnc->sCmn.prevLag = 100;
+ psEnc->sCmn.prev_sigtype = SIG_TYPE_UNVOICED;
+ psEnc->sCmn.first_frame_after_reset = 1;
+ psEnc->sPrefilt.lagPrev = 100;
+ psEnc->sShape.LastGainIndex = 1;
+ psEnc->sNSQ.lagPrev = 100;
+ psEnc->sNSQ.prev_inv_gain_Q16 = 65536;
+ psEnc->sNSQ_LBRR.prev_inv_gain_Q16 = 65536;
+ psEnc->sCmn.fs_kHz = fs_kHz;
+ if( psEnc->sCmn.fs_kHz == 8 ) {
+ psEnc->sCmn.predictLPCOrder = MIN_LPC_ORDER;
+ psEnc->sCmn.psNLSF_CB[ 0 ] = &SKP_Silk_NLSF_CB0_10;
+ psEnc->sCmn.psNLSF_CB[ 1 ] = &SKP_Silk_NLSF_CB1_10;
+ } else {
+ psEnc->sCmn.predictLPCOrder = MAX_LPC_ORDER;
+ psEnc->sCmn.psNLSF_CB[ 0 ] = &SKP_Silk_NLSF_CB0_16;
+ psEnc->sCmn.psNLSF_CB[ 1 ] = &SKP_Silk_NLSF_CB1_16;
+ }
+ psEnc->sCmn.frame_length = SKP_SMULBB( FRAME_LENGTH_MS, fs_kHz );
+ psEnc->sCmn.subfr_length = SKP_DIV32_16( psEnc->sCmn.frame_length, NB_SUBFR );
+ psEnc->sCmn.la_pitch = SKP_SMULBB( LA_PITCH_MS, fs_kHz );
+ psEnc->sCmn.la_shape = SKP_SMULBB( LA_SHAPE_MS, fs_kHz );
+ psEnc->sPred.min_pitch_lag = SKP_SMULBB( 3, fs_kHz );
+ psEnc->sPred.max_pitch_lag = SKP_SMULBB( 18, fs_kHz );
+ psEnc->sPred.pitch_LPC_win_length = SKP_SMULBB( FIND_PITCH_LPC_WIN_MS, fs_kHz );
+ if( psEnc->sCmn.fs_kHz == 24 ) {
+ psEnc->mu_LTP_Q8 = MU_LTP_QUANT_SWB_Q8;
+ } else if( psEnc->sCmn.fs_kHz == 16 ) {
+ psEnc->mu_LTP_Q8 = MU_LTP_QUANT_WB_Q8;
+ } else if( psEnc->sCmn.fs_kHz == 12 ) {
+ psEnc->mu_LTP_Q8 = MU_LTP_QUANT_MB_Q8;
+ } else {
+ psEnc->mu_LTP_Q8 = MU_LTP_QUANT_NB_Q8;
+ }
+ psEnc->sCmn.fs_kHz_changed = 1;
+
+ /* Check that settings are valid */
+ SKP_assert( ( psEnc->sCmn.subfr_length * NB_SUBFR ) == psEnc->sCmn.frame_length );
+ }
+
+ /* Set encoding complexity */
+ if( Complexity == 0 || LOW_COMPLEXITY_ONLY ) {
+ /* Low complexity */
+ psEnc->sCmn.Complexity = 0;
+ psEnc->sCmn.pitchEstimationComplexity = PITCH_EST_COMPLEXITY_LC_MODE;
+ psEnc->pitchEstimationThreshold_Q16 = FIND_PITCH_CORRELATION_THRESHOLD_Q16_LC_MODE;
+ psEnc->sCmn.pitchEstimationLPCOrder = 8;
+ psEnc->sCmn.shapingLPCOrder = 12;
+ psEnc->sCmn.nStatesDelayedDecision = 1;
+ psEnc->NoiseShapingQuantizer = SKP_Silk_NSQ;
+ psEnc->sCmn.useInterpolatedNLSFs = 0;
+ psEnc->sCmn.LTPQuantLowComplexity = 1;
+ psEnc->sCmn.NLSF_MSVQ_Survivors = MAX_NLSF_MSVQ_SURVIVORS_LC_MODE;
+ } else if( Complexity == 1 ) {
+ /* Medium complexity */
+ psEnc->sCmn.Complexity = 1;
+ psEnc->sCmn.pitchEstimationComplexity = PITCH_EST_COMPLEXITY_MC_MODE;
+ psEnc->pitchEstimationThreshold_Q16 = FIND_PITCH_CORRELATION_THRESHOLD_Q16_MC_MODE;
+ psEnc->sCmn.pitchEstimationLPCOrder = 12;
+ psEnc->sCmn.shapingLPCOrder = 16;
+ psEnc->sCmn.nStatesDelayedDecision = 2;
+ psEnc->NoiseShapingQuantizer = SKP_Silk_NSQ_del_dec;
+ psEnc->sCmn.useInterpolatedNLSFs = 0;
+ psEnc->sCmn.LTPQuantLowComplexity = 0;
+ psEnc->sCmn.NLSF_MSVQ_Survivors = MAX_NLSF_MSVQ_SURVIVORS_MC_MODE;
+ } else if( Complexity == 2 ) {
+ /* High complexity */
+ psEnc->sCmn.Complexity = 2;
+ psEnc->sCmn.pitchEstimationComplexity = PITCH_EST_COMPLEXITY_HC_MODE;
+ psEnc->pitchEstimationThreshold_Q16 = FIND_PITCH_CORRELATION_THRESHOLD_Q16_HC_MODE;
+ psEnc->sCmn.pitchEstimationLPCOrder = 16;
+ psEnc->sCmn.shapingLPCOrder = 16;
+ psEnc->sCmn.nStatesDelayedDecision = 4;
+ psEnc->NoiseShapingQuantizer = SKP_Silk_NSQ_del_dec;
+ psEnc->sCmn.useInterpolatedNLSFs = 1;
+ psEnc->sCmn.LTPQuantLowComplexity = 0;
+ psEnc->sCmn.NLSF_MSVQ_Survivors = MAX_NLSF_MSVQ_SURVIVORS;
+ } else {
+ ret = SKP_SILK_ENC_WRONG_COMPLEXITY_SETTING;
+ }
+
+ /* Dont have higher Pitch estimation LPC order than predict LPC order */
+ psEnc->sCmn.pitchEstimationLPCOrder = SKP_min_int( psEnc->sCmn.pitchEstimationLPCOrder, psEnc->sCmn.predictLPCOrder );
+
+ SKP_assert( psEnc->sCmn.pitchEstimationLPCOrder <= FIND_PITCH_LPC_ORDER_MAX );
+ SKP_assert( psEnc->sCmn.shapingLPCOrder <= SHAPE_LPC_ORDER_MAX );
+ SKP_assert( psEnc->sCmn.nStatesDelayedDecision <= DEL_DEC_STATES_MAX );
+
+ /* Set bitrate/coding quality */
+ TargetRate_bps = SKP_min( TargetRate_bps, 100000 );
+ if( psEnc->sCmn.fs_kHz == 8 ) {
+ TargetRate_bps = SKP_max( TargetRate_bps, MIN_TARGET_RATE_NB_BPS );
+ } else if( psEnc->sCmn.fs_kHz == 12 ) {
+ TargetRate_bps = SKP_max( TargetRate_bps, MIN_TARGET_RATE_MB_BPS );
+ } else if( psEnc->sCmn.fs_kHz == 16 ) {
+ TargetRate_bps = SKP_max( TargetRate_bps, MIN_TARGET_RATE_WB_BPS );
+ } else {
+ TargetRate_bps = SKP_max( TargetRate_bps, MIN_TARGET_RATE_SWB_BPS );
+ }
+ if( TargetRate_bps != psEnc->sCmn.TargetRate_bps ) {
+ psEnc->sCmn.TargetRate_bps = TargetRate_bps;
+
+ /* if new TargetRate_bps, translate to SNR_dB value */
+ if( psEnc->sCmn.fs_kHz == 8 ) {
+ rateTable = TargetRate_table_NB;
+ } else if( psEnc->sCmn.fs_kHz == 12 ) {
+ rateTable = TargetRate_table_MB;
+ } else if( psEnc->sCmn.fs_kHz == 16 ) {
+ rateTable = TargetRate_table_WB;
+ } else {
+ rateTable = TargetRate_table_SWB;
+ }
+ for( k = 1; k < TARGET_RATE_TAB_SZ; k++ ) {
+ /* find bitrate interval in table and interpolate */
+ if( TargetRate_bps < rateTable[ k ] ) {
+ frac_Q6 = SKP_DIV32( SKP_LSHIFT( TargetRate_bps - rateTable[ k - 1 ], 6 ), rateTable[ k ] - rateTable[ k - 1 ] );
+ psEnc->SNR_dB_Q7 = SKP_LSHIFT( SNR_table_Q1[ k - 1 ], 6 ) + SKP_MUL( frac_Q6, SNR_table_Q1[ k ] - SNR_table_Q1[ k - 1 ] );
+ break;
+ }
+ }
+ }
+
+ /* Set packet size */
+ if( ( PacketSize_ms != 20 ) &&
+ ( PacketSize_ms != 40 ) &&
+ ( PacketSize_ms != 60 ) &&
+ ( PacketSize_ms != 80 ) &&
+ ( PacketSize_ms != 100 ) ) {
+ ret = SKP_SILK_ENC_PACKET_SIZE_NOT_SUPPORTED;
+ } else {
+ if( PacketSize_ms != psEnc->sCmn.PacketSize_ms ) {
+ psEnc->sCmn.PacketSize_ms = PacketSize_ms;
+
+ /* Packet length changes. Reset LBRR buffer */
+ SKP_Silk_LBRR_reset( &psEnc->sCmn );
+ }
+ }
+
+ /* Set packet loss rate measured by farend */
+ if( ( PacketLoss_perc < 0 ) || ( PacketLoss_perc > 100 ) ) {
+ ret = SKP_SILK_ENC_WRONG_LOSS_RATE;
+ }
+ psEnc->sCmn.PacketLoss_perc = PacketLoss_perc;
+
+#if USE_LBRR
+ if( INBandFec_enabled < 0 || INBandFec_enabled > 1 ) {
+ ret = SKP_SILK_ENC_WRONG_INBAND_FEC_SETTING;
+ }
+
+ /* Only change settings if first frame in packet */
+ if( psEnc->sCmn.nFramesInPayloadBuf == 0 ) {
+
+ psEnc->sCmn.LBRR_enabled = INBandFec_enabled;
+ if( psEnc->sCmn.fs_kHz == 8 ) {
+ LBRRRate_thres_bps = INBAND_FEC_MIN_RATE_BPS - 9000;
+ } else if( psEnc->sCmn.fs_kHz == 12 ) {
+ LBRRRate_thres_bps = INBAND_FEC_MIN_RATE_BPS - 6000;;
+ } else if( psEnc->sCmn.fs_kHz == 16 ) {
+ LBRRRate_thres_bps = INBAND_FEC_MIN_RATE_BPS - 3000;
+ } else {
+ LBRRRate_thres_bps = INBAND_FEC_MIN_RATE_BPS;
+ }
+
+ if( psEnc->sCmn.TargetRate_bps >= LBRRRate_thres_bps ) {
+ /* Set gain increase / rate reduction for LBRR usage */
+ /* Coarse tuned with pesq for now. */
+ /* Linear regression coefs G = 8 - 0.5 * loss */
+ /* Meaning that at 16% loss main rate and redundant rate is the same, -> G = 0 */
+ psEnc->sCmn.LBRR_GainIncreases = SKP_max_int( 8 - SKP_RSHIFT( psEnc->sCmn.PacketLoss_perc, 1 ), 0 );
+
+ /* Set main stream rate compensation */
+ if( psEnc->sCmn.LBRR_enabled && psEnc->sCmn.PacketLoss_perc > LBRR_LOSS_THRES ) {
+ /* Tuned to give aprox same mean / weighted bitrate as no inband FEC */
+ psEnc->inBandFEC_SNR_comp_Q8 = ( 6 << 8 ) - SKP_LSHIFT( psEnc->sCmn.LBRR_GainIncreases, 7 );
+ } else {
+ psEnc->inBandFEC_SNR_comp_Q8 = 0;
+ psEnc->sCmn.LBRR_enabled = 0;
+ }
+ } else {
+ psEnc->inBandFEC_SNR_comp_Q8 = 0;
+ psEnc->sCmn.LBRR_enabled = 0;
+ }
+ }
+#else
+ psEnc->sCmn.LBRR_enabled = 0;
+#endif
+
+ /* Set DTX mode */
+ if( DTX_enabled < 0 || DTX_enabled > 1 ) {
+ ret = SKP_SILK_ENC_WRONG_DTX_SETTING;
+ }
+ psEnc->sCmn.useDTX = DTX_enabled;
+
+ return ret;
+}
+
+/* Control low bitrate redundancy usage */
+void SKP_Silk_LBRR_ctrl_FIX(
+ SKP_Silk_encoder_state_FIX *psEnc, /* I/O encoder state */
+ SKP_Silk_encoder_control_FIX *psEncCtrl /* I/O encoder control */
+)
+{
+ SKP_int LBRR_usage;
+
+ if( psEnc->sCmn.LBRR_enabled ) {
+ /* Control LBRR */
+
+ /* Usage Control based on sensitivity and packet loss caracteristics */
+ /* For now only enable adding to next for active frames. Make more complex later */
+ LBRR_usage = SKP_SILK_NO_LBRR;
+ if( psEnc->speech_activity_Q8 > LBRR_SPEECH_ACTIVITY_THRES_Q8 && psEnc->sCmn.PacketLoss_perc > LBRR_LOSS_THRES ) { // nb! maybe multiply loss prob and speech activity
+ //if( psEnc->PacketLoss_burst > BURST_THRES )
+ // psEncCtrl->LBRR_usage = SKP_SILK_ADD_LBRR_TO_PLUS2;
+ //} else {
+ LBRR_usage = SKP_SILK_ADD_LBRR_TO_PLUS1;//SKP_SILK_NO_LBRR
+ //}
+ }
+ psEncCtrl->sCmn.LBRR_usage = LBRR_usage;
+ } else {
+ psEncCtrl->sCmn.LBRR_usage = SKP_SILK_NO_LBRR;
+ }
+}
--- /dev/null
+++ b/src/SKP_Silk_corrMatrix_FIX.c
@@ -1,0 +1,152 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+/**********************************************************************
+ * Correlation Matrix Computations for LS estimate.
+ **********************************************************************/
+
+#include "SKP_Silk_main_FIX.h"
+
+/* Calculates correlation vector X'*t */
+void SKP_Silk_corrVector_FIX(
+ const SKP_int16 *x, /* I x vector [L + order - 1] used to form data matrix X */
+ const SKP_int16 *t, /* I target vector [L] */
+ const SKP_int L, /* I Length of vectors */
+ const SKP_int order, /* I Max lag for correlation */
+ SKP_int32 *Xt, /* O Pointer to X'*t correlation vector [order] */
+ const SKP_int rshifts /* I Right shifts of correlations */
+)
+{
+ SKP_int lag, i;
+ const SKP_int16 *ptr1, *ptr2;
+ SKP_int32 inner_prod;
+
+ ptr1 = &x[ order - 1 ]; /* Points to first sample of column 0 of X: X[:,0] */
+ ptr2 = t;
+ /* Calculate X'*t */
+ if( rshifts > 0 ) {
+ /* Right shifting used */
+ for( lag = 0; lag < order; lag++ ) {
+ inner_prod = 0;
+ for( i = 0; i < L; i++ ) {
+ inner_prod += SKP_RSHIFT32( SKP_SMULBB( ptr1[ i ], ptr2[i] ), rshifts );
+ }
+ Xt[ lag ] = inner_prod; /* X[:,lag]'*t */
+ ptr1--; /* Go to next column of X */
+ }
+ } else {
+ SKP_assert( rshifts == 0 );
+ for( lag = 0; lag < order; lag++ ) {
+ Xt[ lag ] = SKP_Silk_inner_prod_aligned( ptr1, ptr2, L ); /* X[:,lag]'*t */
+ ptr1--; /* Go to next column of X */
+ }
+ }
+}
+
+/* Calculates correlation matrix X'*X */
+void SKP_Silk_corrMatrix_FIX(
+ const SKP_int16 *x, /* I x vector [L + order - 1] used to form data matrix X */
+ const SKP_int L, /* I Length of vectors */
+ const SKP_int order, /* I Max lag for correlation */
+ SKP_int32 *XX, /* O Pointer to X'*X correlation matrix [ order x order ]*/
+ SKP_int *rshifts /* I/O Right shifts of correlations */
+)
+{
+ SKP_int i, j, lag, rshifts_local, head_room_rshifts;
+ SKP_int32 energy;
+ const SKP_int16 *ptr1, *ptr2;
+
+ /* Calculate energy to find shift used to fit in 32 bits */
+ SKP_Silk_sum_sqr_shift( &energy, &rshifts_local, x, L + order - 1 );
+ /* Add shifts to get the wanted head room */
+
+ head_room_rshifts = SKP_max( LTP_CORRS_HEAD_ROOM - SKP_Silk_CLZ32( energy ), 0 );
+
+ energy = SKP_RSHIFT32( energy, head_room_rshifts );
+ rshifts_local += head_room_rshifts;
+
+ /* Calculate energy of first column (0) of X: X[:,0]'*X[:,0] */
+ /* Remove contribution of first order - 1 samples */
+ for( i = 0; i < order - 1; i++ ) {
+ energy -= SKP_RSHIFT32( SKP_SMULBB( x[ i ], x[ i ] ), rshifts_local );
+ }
+ if( rshifts_local < *rshifts ) {
+ /* Adjust energy */
+ energy = SKP_RSHIFT32( energy, *rshifts - rshifts_local );
+ rshifts_local = *rshifts;
+ }
+
+ /* Calculate energy of remaining columns of X: X[:,j]'*X[:,j] */
+ /* Fill out the diagonal of the correlation matrix */
+ matrix_ptr( XX, 0, 0, order ) = energy;
+ ptr1 = &x[ order - 1 ]; /* First sample of column 0 of X */
+ for( j = 1; j < order; j++ ) {
+ energy = SKP_SUB32( energy, SKP_RSHIFT32( SKP_SMULBB( ptr1[ L - j ], ptr1[ L - j ] ), rshifts_local ) );
+ energy = SKP_ADD32( energy, SKP_RSHIFT32( SKP_SMULBB( ptr1[ -j ], ptr1[ -j ] ), rshifts_local ) );
+ matrix_ptr( XX, j, j, order ) = energy;
+ }
+
+ ptr2 = &x[ order - 2 ]; /* First sample of column 1 of X */
+ /* Calculate the remaining elements of the correlation matrix */
+ if( rshifts_local > 0 ) {
+ /* Right shifting used */
+ for( lag = 1; lag < order; lag++ ) {
+ /* Inner product of column 0 and column lag: X[:,0]'*X[:,lag] */
+ energy = 0;
+ for( i = 0; i < L; i++ ) {
+ energy += SKP_RSHIFT32( SKP_SMULBB( ptr1[ i ], ptr2[i] ), rshifts_local );
+ }
+ /* Calculate remaining off diagonal: X[:,j]'*X[:,j + lag] */
+ matrix_ptr( XX, lag, 0, order ) = energy;
+ matrix_ptr( XX, 0, lag, order ) = energy;
+ for( j = 1; j < ( order - lag ); j++ ) {
+ energy = SKP_SUB32( energy, SKP_RSHIFT32( SKP_SMULBB( ptr1[ L - j ], ptr2[ L - j ] ), rshifts_local ) );
+ energy = SKP_ADD32( energy, SKP_RSHIFT32( SKP_SMULBB( ptr1[ -j ], ptr2[ -j ] ), rshifts_local ) );
+ matrix_ptr( XX, lag + j, j, order ) = energy;
+ matrix_ptr( XX, j, lag + j, order ) = energy;
+ }
+ ptr2--; /* Update pointer to first sample of next column (lag) in X */
+ }
+ } else {
+ for( lag = 1; lag < order; lag++ ) {
+ /* Inner product of column 0 and column lag: X[:,0]'*X[:,lag] */
+ energy = SKP_Silk_inner_prod_aligned( ptr1, ptr2, L );
+ matrix_ptr( XX, lag, 0, order ) = energy;
+ matrix_ptr( XX, 0, lag, order ) = energy;
+ /* Calculate remaining off diagonal: X[:,j]'*X[:,j + lag] */
+ for( j = 1; j < ( order - lag ); j++ ) {
+ energy = SKP_SUB32( energy, SKP_SMULBB( ptr1[ L - j ], ptr2[ L - j ] ) );
+ energy = SKP_SMLABB( energy, ptr1[ -j ], ptr2[ -j ] );
+ matrix_ptr( XX, lag + j, j, order ) = energy;
+ matrix_ptr( XX, j, lag + j, order ) = energy;
+ }
+ ptr2--;/* Update pointer to first sample of next column (lag) in X */
+ }
+ }
+ *rshifts = rshifts_local;
+}
+
--- /dev/null
+++ b/src/SKP_Silk_create_init_destroy.c
@@ -1,0 +1,55 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_main.h"
+
+
+/************************/
+/* Init Decoder State */
+/************************/
+SKP_int SKP_Silk_init_decoder(
+ SKP_Silk_decoder_state *psDec /* I/O Decoder state pointer */
+)
+{
+ SKP_memset( psDec, 0, sizeof( SKP_Silk_decoder_state ) );
+ /* Set sampling rate to 24 kHz, and init non-zero values */
+ SKP_Silk_decoder_set_fs( psDec, 24 );
+
+ /* Used to deactivate e.g. LSF interpolation and fluctuation reduction */
+ psDec->first_frame_after_reset = 1;
+ psDec->prev_inv_gain_Q16 = 65536;
+
+ /* Reset CNG state */
+ SKP_Silk_CNG_Reset( psDec );
+
+ SKP_Silk_PLC_Reset( psDec );
+
+ psDec->bitstream_v = USE_BIT_STREAM_V;
+
+ return(0);
+}
+
--- /dev/null
+++ b/src/SKP_Silk_dec_API.c
@@ -1,0 +1,343 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_SDK_API.h"
+#include "SKP_Silk_main_FIX.h"
+
+/*********************/
+/* Decoder functions */
+/*********************/
+
+SKP_int SKP_Silk_SDK_Get_Decoder_Size( SKP_int32 *decSizeBytes )
+{
+ SKP_int ret = 0;
+
+ *decSizeBytes = sizeof( SKP_Silk_decoder_state );
+
+ return ret;
+}
+
+/* Reset decoder state */
+SKP_int SKP_Silk_SDK_InitDecoder(
+ void* decState /* I/O: State */
+)
+{
+ SKP_int ret = 0;
+ SKP_Silk_decoder_state *struc;
+
+ struc = (SKP_Silk_decoder_state *)decState;
+
+ ret = SKP_Silk_init_decoder( struc );
+
+ return ret;
+}
+
+/* Decode a frame */
+SKP_int SKP_Silk_SDK_Decode(
+ void* decState, /* I/O: State */
+ SKP_SILK_SDK_DecControlStruct* decControl, /* I/O: Control structure */
+ SKP_int lostFlag, /* I: 0: no loss, 1 loss */
+ const SKP_uint8 *inData, /* I: Encoded input vector */
+ const SKP_int nBytesIn, /* I: Number of input Bytes */
+ SKP_int16 *samplesOut, /* O: Decoded output speech vector */
+ SKP_int16 *nSamplesOut /* I/O: Number of samples (vector/decoded) */
+)
+{
+ SKP_int ret = 0, used_bytes, prev_fs_kHz;
+ SKP_Silk_decoder_state *psDec;
+
+ psDec = (SKP_Silk_decoder_state *)decState;
+
+ /**********************************/
+ /* Test if first frame in payload */
+ /**********************************/
+ if( psDec->moreInternalDecoderFrames == 0 ) {
+ /* First Frame in Payload */
+ psDec->nFramesDecoded = 0; /* Used to count frames in packet */
+ }
+
+ if( psDec->moreInternalDecoderFrames == 0 && /* First frame in packet */
+ lostFlag == 0 && /* Not packet loss */
+ nBytesIn > MAX_ARITHM_BYTES ) { /* Too long payload */
+ /* Avoid trying to decode a too large packet */
+ lostFlag = 1;
+ ret = SKP_SILK_DEC_PAYLOAD_TOO_LARGE;
+ }
+
+ /* Save previous sample frequency */
+ prev_fs_kHz = psDec->fs_kHz;
+
+ /* Call decoder for one frame */
+ ret += SKP_Silk_decode_frame( psDec, samplesOut, nSamplesOut, inData, nBytesIn,
+ lostFlag, &used_bytes );
+
+ if( used_bytes ) { /* Only Call if not a packet loss */
+ if( psDec->nBytesLeft > 0 && psDec->FrameTermination == SKP_SILK_MORE_FRAMES && psDec->nFramesDecoded < 5 ) {
+ /* We have more frames in the Payload */
+ psDec->moreInternalDecoderFrames = 1;
+ } else {
+ /* Last frame in Payload */
+ psDec->moreInternalDecoderFrames = 0;
+ psDec->nFramesInPacket = psDec->nFramesDecoded;
+
+ /* Track inband FEC usage */
+ if( psDec->vadFlag == VOICE_ACTIVITY ) {
+ if( psDec->FrameTermination == SKP_SILK_LAST_FRAME ) {
+ psDec->no_FEC_counter++;
+ if( psDec->no_FEC_counter > NO_LBRR_THRES ) {
+ psDec->inband_FEC_offset = 0;
+ }
+ } else if( psDec->FrameTermination == SKP_SILK_LBRR_VER1 ) {
+ psDec->inband_FEC_offset = 1; /* FEC info with 1 packet delay */
+ psDec->no_FEC_counter = 0;
+ } else if( psDec->FrameTermination == SKP_SILK_LBRR_VER2 ) {
+ psDec->inband_FEC_offset = 2; /* FEC info with 2 packets delay */
+ psDec->no_FEC_counter = 0;
+ }
+ }
+ }
+ }
+
+ if( psDec->fs_kHz * 1000 > decControl->sampleRate ) {
+ ret = SKP_SILK_DEC_WRONG_SAMPLING_FREQUENCY;
+ }
+
+ /* Do any resampling if needed */
+ if( psDec->fs_kHz * 1000 != decControl->sampleRate ) {
+ SKP_int16 samplesOut_tmp[ 2 * MAX_FRAME_LENGTH ];
+ SKP_int32 scratch[ 3 * MAX_FRAME_LENGTH ];
+
+ /* Copy to a tmpbuffer as the resampling writes to samplesOut */
+ memcpy( samplesOut_tmp, samplesOut, *nSamplesOut * sizeof( SKP_int16 ) );
+
+ /* Clear resampler state when switching internal sampling frequency */
+ if( prev_fs_kHz != psDec->fs_kHz ) {
+ SKP_memset( psDec->resampleState, 0, sizeof( psDec->resampleState ) );
+ }
+
+ if( psDec->fs_kHz == 16 && decControl->sampleRate == 24000 ) {
+ /* Resample from 16 kHz to 24 kHz */
+ SKP_Silk_resample_3_2( samplesOut, psDec->resampleState, samplesOut_tmp, *nSamplesOut );
+ } else if( psDec->fs_kHz == 12 && decControl->sampleRate == 24000 ) {
+ /* Resample from 12 kHz to 24 kHz */
+ SKP_Silk_resample_2_1_coarse( samplesOut_tmp, psDec->resampleState, samplesOut, scratch, *nSamplesOut );
+ } else if( psDec->fs_kHz == 8 && decControl->sampleRate == 24000 ) {
+ /* Resample from 8 kHz to 24 kHz */
+ SKP_Silk_resample_3_1( samplesOut, psDec->resampleState, samplesOut_tmp, *nSamplesOut );
+ } else if( psDec->fs_kHz == 12 && decControl->sampleRate == 16000 ) {
+ /* Resample from 12 kHz to 16 kHz */
+ SKP_Silk_resample_4_3( samplesOut, psDec->resampleState, samplesOut_tmp, *nSamplesOut );
+ } else if( psDec->fs_kHz == 8 && decControl->sampleRate == 16000 ) {
+ /* Resample from 8 kHz to 16 kHz */
+ SKP_Silk_resample_2_1_coarse( samplesOut_tmp, psDec->resampleState, samplesOut, scratch, *nSamplesOut );
+ } else if( psDec->fs_kHz == 8 && decControl->sampleRate == 12000 ) {
+ /* Resample from 8 kHz to 12 kHz */
+ SKP_Silk_resample_3_2( samplesOut, psDec->resampleState, samplesOut_tmp, *nSamplesOut );
+ }
+
+ *nSamplesOut = SKP_DIV32( ( SKP_int32 )*nSamplesOut * decControl->sampleRate, psDec->fs_kHz * 1000 );
+ }
+
+ /* Copy all parameters that are needed out of internal structure to the control stucture */
+ decControl->frameSize = ( SKP_int )psDec->frame_length;
+ decControl->framesPerPacket = ( SKP_int )psDec->nFramesInPacket;
+ decControl->inBandFECOffset = ( SKP_int )psDec->inband_FEC_offset;
+ decControl->moreInternalDecoderFrames = ( SKP_int )psDec->moreInternalDecoderFrames;
+
+ return ret;
+}
+
+/* Function to find LBRR information in a packet */
+void SKP_Silk_SDK_search_for_LBRR(
+ void *decState, /* I: Decoder state, to select bitstream version only */
+ const SKP_uint8 *inData, /* I: Encoded input vector */
+ const SKP_int16 nBytesIn, /* I: Number of input Bytes */
+ SKP_int lost_offset, /* I: Offset from lost packet */
+ SKP_uint8 *LBRRData, /* O: LBRR payload */
+ SKP_int16 *nLBRRBytes /* O: Number of LBRR Bytes */
+)
+{
+ SKP_Silk_decoder_state *psDec;
+ SKP_Silk_decoder_state sDec; // Local decoder state to avoid interfering with running decoder */
+ SKP_Silk_decoder_control sDecCtrl;
+ SKP_int i, TempQ[ MAX_FRAME_LENGTH ];
+
+ psDec = ( SKP_Silk_decoder_state * )decState;
+
+ if( lost_offset < 1 || lost_offset > MAX_LBRR_DELAY ) {
+ /* No useful FEC in this packet */
+ *nLBRRBytes = 0;
+ return;
+ }
+
+ sDec.nFramesDecoded = 0;
+ sDec.fs_kHz = 0; /* Force update parameters LPC_order etc */
+ SKP_memset( sDec.prevNLSF_Q15, 0, MAX_LPC_ORDER * sizeof( SKP_int ) );
+ SKP_Silk_range_dec_init( &sDec.sRC, inData, ( SKP_int32 )nBytesIn );
+
+ if( psDec->bitstream_v == BIT_STREAM_V4 ) { /* Silk_v4 payload */
+ /* Decode all parameter indices for the whole packet*/
+ SKP_Silk_decode_indices_v4( &sDec );
+
+ /* Is there usable LBRR in this packet */
+ *nLBRRBytes = 0;
+ if( ( sDec.FrameTermination - 1 ) & lost_offset && sDec.FrameTermination > 0 && sDec.nBytesLeft >= 0 ) {
+ /* The wanted FEC is present in the packet */
+ for( i = 0; i < sDec.nFramesInPacket; i++ ) {
+ SKP_Silk_decode_parameters_v4( &sDec, &sDecCtrl, TempQ, 0 );
+
+ if( sDec.nBytesLeft <= 0 || sDec.sRC.error ) {
+ /* Corrupt stream */
+ LBRRData = NULL;
+ *nLBRRBytes = 0;
+ break;
+ } else {
+ sDec.nFramesDecoded++;
+ }
+ }
+
+ if( LBRRData != NULL ) {
+ /* The wanted FEC is present in the packet */
+ *nLBRRBytes = sDec.nBytesLeft;
+ SKP_memcpy( LBRRData, &inData[ nBytesIn - sDec.nBytesLeft ], sDec.nBytesLeft * sizeof( SKP_uint8 ) );
+ }
+ }
+ } else { /* Silk_v3 payload */
+ while(1) {
+ SKP_Silk_decode_parameters( &sDec, &sDecCtrl, TempQ, 0 );
+
+ if( sDec.sRC.error ) {
+ /* Corrupt stream */
+ *nLBRRBytes = 0;
+ return;
+ };
+
+ if( ( sDec.FrameTermination - 1 ) & lost_offset && sDec.FrameTermination > 0 && sDec.nBytesLeft >= 0 ) {
+ /* The wanted FEC is present in the packet */
+ *nLBRRBytes = sDec.nBytesLeft;
+ SKP_memcpy( LBRRData, &inData[ nBytesIn - sDec.nBytesLeft ], sDec.nBytesLeft * sizeof( SKP_uint8 ) );
+ break;
+ }
+ if( sDec.nBytesLeft > 0 && sDec.FrameTermination == SKP_SILK_MORE_FRAMES ) {
+ sDec.nFramesDecoded++;
+ } else {
+ LBRRData = NULL;
+ *nLBRRBytes = 0;
+ break;
+ }
+ }
+ }
+}
+
+/* Getting type of content for a packet */
+void SKP_Silk_SDK_get_TOC(
+ void *decState, /* I/O: Decoder state, to select bitstream version only */
+ const SKP_uint8 *inData, /* I: Encoded input vector */
+ const SKP_int16 nBytesIn, /* I: Number of input bytes */
+ SKP_Silk_TOC_struct *Silk_TOC /* O: Type of content */
+)
+{
+ SKP_Silk_decoder_state *psDec;
+ SKP_Silk_decoder_state sDec; // Local Decoder state to avoid interfering with running decoder */
+ SKP_Silk_decoder_control sDecCtrl;
+ SKP_int i, TempQ[ MAX_FRAME_LENGTH ];
+
+ psDec = (SKP_Silk_decoder_state *)decState;
+
+ sDec.nFramesDecoded = 0;
+ sDec.fs_kHz = 0; /* Force update parameters LPC_order etc */
+ SKP_Silk_range_dec_init( &sDec.sRC, inData, ( SKP_int32 )nBytesIn );
+
+ if( psDec->bitstream_v == BIT_STREAM_V4 ) { /* Silk_v4 payload */
+ /* Decode all parameter indices for the whole packet*/
+ SKP_Silk_decode_indices_v4( &sDec );
+
+ if( sDec.nFramesInPacket > SILK_MAX_FRAMES_PER_PACKET || sDec.sRC.error ) {
+ /* Corrupt packet */
+ SKP_memset( Silk_TOC, 0, sizeof( SKP_Silk_TOC_struct ) );
+ Silk_TOC->corrupt = 1;
+ } else {
+ Silk_TOC->corrupt = 0;
+ Silk_TOC->framesInPacket = sDec.nFramesInPacket;
+ Silk_TOC->fs_kHz = sDec.fs_kHz;
+ if( sDec.FrameTermination == SKP_SILK_LAST_FRAME ) {
+ Silk_TOC->inbandLBRR = sDec.FrameTermination;
+ } else {
+ Silk_TOC->inbandLBRR = sDec.FrameTermination - 1;
+ }
+ /* Copy data */
+ for( i = 0; i < sDec.nFramesInPacket; i++ ) {
+ Silk_TOC->vadFlags[ i ] = sDec.vadFlagBuf[ i ];
+ Silk_TOC->sigtypeFlags[ i ] = sDec.sigtype[ i ];
+ }
+ }
+ } else { /* Silk_v3 payload */
+ Silk_TOC->corrupt = 0;
+ while( 1 ) {
+ SKP_Silk_decode_parameters( &sDec, &sDecCtrl, TempQ, 0 );
+
+ Silk_TOC->vadFlags[ sDec.nFramesDecoded ] = sDec.vadFlag;
+ Silk_TOC->sigtypeFlags[ sDec.nFramesDecoded ] = sDecCtrl.sigtype;
+
+ if( sDec.sRC.error ) {
+ /* Corrupt stream */
+ Silk_TOC->corrupt = 1;
+ break;
+ };
+
+ if( sDec.nBytesLeft > 0 && sDec.FrameTermination == SKP_SILK_MORE_FRAMES ) {
+ sDec.nFramesDecoded++;
+ } else {
+ break;
+ }
+ }
+ if( Silk_TOC->corrupt || sDec.FrameTermination == SKP_SILK_MORE_FRAMES ||
+ sDec.nFramesInPacket > SILK_MAX_FRAMES_PER_PACKET ) {
+ /* Corrupt packet */
+ SKP_memset( Silk_TOC, 0, sizeof( SKP_Silk_TOC_struct ) );
+ Silk_TOC->corrupt = 1;
+ } else {
+ Silk_TOC->framesInPacket = sDec.nFramesDecoded;
+ Silk_TOC->fs_kHz = sDec.fs_kHz;
+ if( sDec.FrameTermination == SKP_SILK_LAST_FRAME ) {
+ Silk_TOC->inbandLBRR = sDec.FrameTermination;
+ } else {
+ Silk_TOC->inbandLBRR = sDec.FrameTermination - 1;
+ }
+ }
+ }
+}
+
+/**************************/
+/* Get the version number */
+/**************************/
+/* Return a pointer to string specifying the version */
+const char *SKP_Silk_SDK_get_version()
+{
+ static const char version[] = "1.0.2";
+ return version;
+}
--- /dev/null
+++ b/src/SKP_Silk_decode_core.c
@@ -1,0 +1,256 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_main.h"
+
+/**********************************************************/
+/* Core decoder. Performs inverse NSQ operation LTP + LPC */
+/**********************************************************/
+void SKP_Silk_decode_core(
+ SKP_Silk_decoder_state *psDec, /* I/O Decoder state */
+ SKP_Silk_decoder_control *psDecCtrl, /* I Decoder control */
+ SKP_int16 xq[], /* O Decoded speech */
+ const SKP_int q[ MAX_FRAME_LENGTH ] /* I Pulse signal */
+)
+{
+ SKP_int i, k, lag = 0, start_idx, NLSF_interpolation_flag, sigtype, LTP_scale_Q14;
+ SKP_int16 *A_Q12, *B_Q14, *pxq, A_Q12_tmp[ MAX_LPC_ORDER ];
+ SKP_int16 sLTP[ MAX_FRAME_LENGTH ];
+ SKP_int32 Gain_Q16, *pred_lag_ptr, *pexc_Q10, *pres_Q10, LTP_pred_Q14, LPC_pred_Q10;
+ SKP_int32 rand_seed, offset_Q10, dither;
+ SKP_int32 vec_Q10[ MAX_FRAME_LENGTH / NB_SUBFR ], Atmp;
+ SKP_int32 inv_gain_Q16, inv_gain_Q32, gain_adj_Q16, FiltState[ MAX_LPC_ORDER ];
+ SKP_assert( psDec->prev_inv_gain_Q16 != 0 );
+
+ offset_Q10 = SKP_Silk_Quantization_Offsets_Q10[ psDecCtrl->sigtype ][ psDecCtrl->QuantOffsetType ];
+
+ if( psDecCtrl->NLSFInterpCoef_Q2 < ( 1 << 2 ) ) {
+ NLSF_interpolation_flag = 1;
+ } else {
+ NLSF_interpolation_flag = 0;
+ }
+
+
+ /* Decode excitation */
+ rand_seed = psDecCtrl->Seed;
+ for( i = 0; i < psDec->frame_length; i++ ) {
+ rand_seed = SKP_RAND( rand_seed );
+ /* dither = rand_seed < 0 ? 0xFFFFFFFF : 0; */
+ dither = SKP_RSHIFT( rand_seed, 31 );
+
+ psDec->exc_Q10[ i ] = SKP_LSHIFT( ( SKP_int32 )q[ i ], 10 ) + offset_Q10;
+ psDec->exc_Q10[ i ] = ( psDec->exc_Q10[ i ] ^ dither ) - dither;
+
+ rand_seed += q[ i ];
+ }
+
+
+ pexc_Q10 = psDec->exc_Q10;
+ pres_Q10 = psDec->res_Q10;
+ pxq = &psDec->outBuf[ psDec->frame_length ];
+ psDec->sLTP_buf_idx = psDec->frame_length;
+ /* Loop over subframes */
+ for( k = 0; k < NB_SUBFR; k++ ) {
+ A_Q12 = psDecCtrl->PredCoef_Q12[ k >> 1 ];
+
+ /* Preload LPC coeficients to array on stack. Gives small performance gain */
+ SKP_memcpy( A_Q12_tmp, A_Q12, psDec->LPC_order * sizeof( SKP_int16 ) );
+ B_Q14 = &psDecCtrl->LTPCoef_Q14[ k * LTP_ORDER ];
+ Gain_Q16 = psDecCtrl->Gains_Q16[ k ];
+ LTP_scale_Q14 = psDecCtrl->LTP_scale_Q14;
+ sigtype = psDecCtrl->sigtype;
+
+ inv_gain_Q16 = SKP_DIV32( SKP_int32_MAX, SKP_RSHIFT( Gain_Q16, 1 ) );
+ inv_gain_Q16 = SKP_min( inv_gain_Q16, SKP_int16_MAX );
+
+ /* Calculate Gain adjustment factor */
+ gain_adj_Q16 = ( SKP_int32 )1 << 16;
+ if( inv_gain_Q16 != psDec->prev_inv_gain_Q16 ) {
+ gain_adj_Q16 = SKP_DIV32_varQ( inv_gain_Q16, psDec->prev_inv_gain_Q16, 16 );
+ }
+
+ /* Avoid abrupt transition from voiced PLC to unvoiced normal decoding */
+ if( psDec->lossCnt && psDec->prev_sigtype == SIG_TYPE_VOICED &&
+ psDecCtrl->sigtype == SIG_TYPE_UNVOICED && k < ( NB_SUBFR >> 1 ) ) {
+
+ SKP_memset( B_Q14, 0, LTP_ORDER * sizeof( SKP_int16 ) );
+ B_Q14[ LTP_ORDER/2 ] = ( SKP_int16 )1 << 12; /* 0.25 */
+
+ sigtype = SIG_TYPE_VOICED;
+ psDecCtrl->pitchL[ k ] = psDec->lagPrev;
+ LTP_scale_Q14 = ( SKP_int )1 << 14;
+ }
+ if( sigtype == SIG_TYPE_VOICED ) {
+ /* Voiced */
+
+ lag = psDecCtrl->pitchL[ k ];
+ /* Re-whitening */
+ if( ( k & ( 3 - SKP_LSHIFT( NLSF_interpolation_flag, 1 ) ) ) == 0 ) {
+ /* Rewhiten with new A coefs */
+ start_idx = psDec->frame_length - lag - psDec->LPC_order - LTP_ORDER / 2;
+ start_idx = SKP_LIMIT( start_idx, 0, psDec->frame_length - psDec->LPC_order );
+
+ SKP_Silk_MA_Prediction( &psDec->outBuf[ start_idx + k * ( psDec->frame_length >> 2 ) ],
+ A_Q12, FiltState, sLTP + start_idx, psDec->frame_length - start_idx, psDec->LPC_order );
+
+ /* After rewhitening the LTP state is unscaled */
+ inv_gain_Q32 = SKP_LSHIFT( inv_gain_Q16, 16 );
+ if( k == 0 ) {
+ /* Do LTP downscaling */
+ inv_gain_Q32 = SKP_LSHIFT( SKP_SMULWB( inv_gain_Q32, psDecCtrl->LTP_scale_Q14 ), 2 );
+ }
+ for( i = 0; i < (lag + LTP_ORDER/2); i++ ) {
+ psDec->sLTP_Q16[ psDec->sLTP_buf_idx - i - 1 ] = SKP_SMULWB( inv_gain_Q32, sLTP[ psDec->frame_length - i - 1 ] );
+ }
+ } else {
+ /* Update LTP state when Gain changes */
+ if( gain_adj_Q16 != ( SKP_int32 )1 << 16 ) {
+ for( i = 0; i < ( lag + LTP_ORDER / 2 ); i++ ) {
+ psDec->sLTP_Q16[ psDec->sLTP_buf_idx - i - 1 ] = SKP_SMULWW( gain_adj_Q16, psDec->sLTP_Q16[ psDec->sLTP_buf_idx - i - 1 ] );
+ }
+ }
+ }
+ }
+
+ /* Scale short term state */
+ for( i = 0; i < MAX_LPC_ORDER; i++ ) {
+ psDec->sLPC_Q14[ i ] = SKP_SMULWW( gain_adj_Q16, psDec->sLPC_Q14[ i ] );
+ }
+
+ /* Save inv_gain */
+ SKP_assert( inv_gain_Q16 != 0 );
+ psDec->prev_inv_gain_Q16 = inv_gain_Q16;
+
+
+ /* Long-term prediction */
+ if( sigtype == SIG_TYPE_VOICED ) {
+ /* Setup pointer */
+ pred_lag_ptr = &psDec->sLTP_Q16[ psDec->sLTP_buf_idx - lag + LTP_ORDER / 2 ];
+ for( i = 0; i < psDec->subfr_length; i++ ) {
+ /* Unrolled loop */
+ LTP_pred_Q14 = SKP_SMULWB( pred_lag_ptr[ 0 ], B_Q14[ 0 ] );
+ LTP_pred_Q14 = SKP_SMLAWB( LTP_pred_Q14, pred_lag_ptr[ -1 ], B_Q14[ 1 ] );
+ LTP_pred_Q14 = SKP_SMLAWB( LTP_pred_Q14, pred_lag_ptr[ -2 ], B_Q14[ 2 ] );
+ LTP_pred_Q14 = SKP_SMLAWB( LTP_pred_Q14, pred_lag_ptr[ -3 ], B_Q14[ 3 ] );
+ LTP_pred_Q14 = SKP_SMLAWB( LTP_pred_Q14, pred_lag_ptr[ -4 ], B_Q14[ 4 ] );
+ pred_lag_ptr++;
+
+ /* Generate LPC residual */
+ pres_Q10[ i ] = SKP_ADD32( pexc_Q10[ i ], SKP_RSHIFT_ROUND( LTP_pred_Q14, 4 ) );
+
+ /* Update states */
+ psDec->sLTP_Q16[ psDec->sLTP_buf_idx ] = SKP_LSHIFT( pres_Q10[ i ], 6 );
+ psDec->sLTP_buf_idx++;
+ }
+ } else {
+ SKP_memcpy( pres_Q10, pexc_Q10, psDec->subfr_length * sizeof( SKP_int32 ) );
+ }
+
+
+ /* Short term prediction */
+ /* NOTE: the code below loads two int16 values in an int32, and multiplies each using the */
+ /* SMLAWB and SMLAWT instructions. On a big-endian CPU the two int16 variables would be */
+ /* loaded in reverse order and the code will give the wrong result. In that case swapping */
+ /* the SMLAWB and SMLAWT instructions should solve the problem. */
+ if( psDec->LPC_order == 16 ) {
+ for( i = 0; i < psDec->subfr_length; i++ ) {
+ /* unrolled */
+ Atmp = *( ( SKP_int32* )&A_Q12_tmp[ 0 ] ); /* read two coefficients at once */
+ LPC_pred_Q10 = SKP_SMULWB( psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 1 ], Atmp );
+ LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 2 ], Atmp );
+ Atmp = *( ( SKP_int32* )&A_Q12_tmp[ 2 ] );
+ LPC_pred_Q10 = SKP_SMLAWB( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 3 ], Atmp );
+ LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 4 ], Atmp );
+ Atmp = *( ( SKP_int32* )&A_Q12_tmp[ 4 ] );
+ LPC_pred_Q10 = SKP_SMLAWB( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 5 ], Atmp );
+ LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 6 ], Atmp );
+ Atmp = *( ( SKP_int32* )&A_Q12_tmp[ 6 ] );
+ LPC_pred_Q10 = SKP_SMLAWB( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 7 ], Atmp );
+ LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 8 ], Atmp );
+ Atmp = *( ( SKP_int32* )&A_Q12_tmp[ 8 ] );
+ LPC_pred_Q10 = SKP_SMLAWB( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 9 ], Atmp );
+ LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 10 ], Atmp );
+ Atmp = *( ( SKP_int32* )&A_Q12_tmp[ 10 ] );
+ LPC_pred_Q10 = SKP_SMLAWB( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 11 ], Atmp );
+ LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 12 ], Atmp );
+ Atmp = *( ( SKP_int32* )&A_Q12_tmp[ 12 ] );
+ LPC_pred_Q10 = SKP_SMLAWB( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 13 ], Atmp );
+ LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 14 ], Atmp );
+ Atmp = *( ( SKP_int32* )&A_Q12_tmp[ 14 ] );
+ LPC_pred_Q10 = SKP_SMLAWB( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 15 ], Atmp );
+ LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 16 ], Atmp );
+
+ /* Add prediction to LPC residual */
+ vec_Q10[ i ] = SKP_ADD32( pres_Q10[ i ], LPC_pred_Q10 );
+
+ /* Update states */
+ psDec->sLPC_Q14[ MAX_LPC_ORDER + i ] = SKP_LSHIFT( vec_Q10[ i ], 4 );
+ }
+ } else {
+ SKP_assert( psDec->LPC_order == 10 );
+ for( i = 0; i < psDec->subfr_length; i++ ) {
+ /* unrolled */
+ Atmp = *( ( SKP_int32* )&A_Q12_tmp[ 0 ] ); /* read two coefficients at once */
+ LPC_pred_Q10 = SKP_SMULWB( psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 1 ], Atmp );
+ LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 2 ], Atmp );
+ Atmp = *( ( SKP_int32* )&A_Q12_tmp[ 2 ] );
+ LPC_pred_Q10 = SKP_SMLAWB( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 3 ], Atmp );
+ LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 4 ], Atmp );
+ Atmp = *( ( SKP_int32* )&A_Q12_tmp[ 4 ] );
+ LPC_pred_Q10 = SKP_SMLAWB( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 5 ], Atmp );
+ LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 6 ], Atmp );
+ Atmp = *( ( SKP_int32* )&A_Q12_tmp[ 6 ] );
+ LPC_pred_Q10 = SKP_SMLAWB( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 7 ], Atmp );
+ LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 8 ], Atmp );
+ Atmp = *( ( SKP_int32* )&A_Q12_tmp[ 8 ] );
+ LPC_pred_Q10 = SKP_SMLAWB( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 9 ], Atmp );
+ LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 10 ], Atmp );
+
+ /* Add prediction to LPC residual */
+ vec_Q10[ i ] = SKP_ADD32( pres_Q10[ i ], LPC_pred_Q10 );
+
+ /* Update states */
+ psDec->sLPC_Q14[ MAX_LPC_ORDER + i ] = SKP_LSHIFT( vec_Q10[ i ], 4 );
+ }
+ }
+
+ /* Scale with Gain */
+ for( i = 0; i < psDec->subfr_length; i++ ) {
+ pxq[ i ] = ( SKP_int16 )SKP_SAT16( SKP_RSHIFT_ROUND( SKP_SMULWW( vec_Q10[ i ], Gain_Q16 ), 10 ) );
+ }
+
+ /* Update LPC filter state */
+ SKP_memcpy( psDec->sLPC_Q14, &psDec->sLPC_Q14[ psDec->subfr_length ], MAX_LPC_ORDER * sizeof( SKP_int32 ) );
+ pexc_Q10 += psDec->subfr_length;
+ pres_Q10 += psDec->subfr_length;
+ pxq += psDec->subfr_length;
+ }
+
+ /* Copy to output */
+ SKP_memcpy( xq, &psDec->outBuf[ psDec->frame_length ], psDec->frame_length * sizeof( SKP_int16 ) );
+
+}
--- /dev/null
+++ b/src/SKP_Silk_decode_frame.c
@@ -1,0 +1,167 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+
+#include "SKP_Silk_main.h"
+#include "SKP_Silk_PLC.h"
+
+/****************/
+/* Decode frame */
+/****************/
+SKP_int SKP_Silk_decode_frame(
+ SKP_Silk_decoder_state *psDec, /* I/O Pointer to Silk decoder state */
+ SKP_int16 pOut[], /* O Pointer to output speech frame */
+ SKP_int16 *pN, /* O Pointer to size of output frame */
+ const SKP_uint8 pCode[], /* I Pointer to payload */
+ const SKP_int nBytes, /* I Payload length */
+ SKP_int action, /* I Action from Jitter Buffer */
+ SKP_int *decBytes /* O Used bytes to decode this frame */
+)
+{
+ SKP_Silk_decoder_control sDecCtrl;
+ SKP_int L, fs_Khz_old, LPC_order_old, ret = 0;
+ SKP_int Pulses[ MAX_FRAME_LENGTH ];
+
+
+ L = psDec->frame_length;
+ sDecCtrl.LTP_scale_Q14 = 0;
+
+ /* Safety checks */
+ SKP_assert( L > 0 && L <= MAX_FRAME_LENGTH );
+
+ /********************************************/
+ /* Decode Frame if packet is not lost */
+ /********************************************/
+ *decBytes = 0;
+ if( action == 0 ) {
+ /********************************************/
+ /* Initialize arithmetic coder */
+ /********************************************/
+ fs_Khz_old = psDec->fs_kHz;
+ LPC_order_old = psDec->LPC_order;
+ if( psDec->nFramesDecoded == 0 ) {
+ /* Initialize range decoder state */
+ SKP_Silk_range_dec_init( &psDec->sRC, pCode, nBytes );
+
+ if( psDec->bitstream_v == BIT_STREAM_V4 ) {
+ SKP_Silk_decode_indices_v4( psDec );
+ }
+ }
+
+ /********************************************/
+ /* Decode parameters and pulse signal */
+ /********************************************/
+ if( psDec->bitstream_v == BIT_STREAM_V4 ) {
+ SKP_Silk_decode_parameters_v4( psDec, &sDecCtrl, Pulses, 1 );
+ } else {
+ SKP_Silk_decode_parameters( psDec, &sDecCtrl, Pulses, 1 );
+ }
+
+
+ if( psDec->sRC.error ) {
+ psDec->nBytesLeft = 0;
+
+ action = 1; /* PLC operation */
+ psDec->fs_kHz = fs_Khz_old; /* revert fs if changed in decode_parameters */
+ psDec->LPC_order = LPC_order_old; /* revert lpc_order if changed in decode_parameters */
+ psDec->frame_length = fs_Khz_old * FRAME_LENGTH_MS;
+ psDec->subfr_length = fs_Khz_old * FRAME_LENGTH_MS / NB_SUBFR;
+
+ /* Avoid crashing */
+ *decBytes = psDec->sRC.bufferLength;
+
+ if( psDec->sRC.error == RANGE_CODER_DEC_PAYLOAD_TOO_LONG ) {
+ ret = SKP_SILK_DEC_PAYLOAD_TOO_LARGE;
+ } else {
+ ret = SKP_SILK_DEC_PAYLOAD_ERROR;
+ }
+ } else {
+ *decBytes = psDec->sRC.bufferLength - psDec->nBytesLeft;
+ psDec->nFramesDecoded++;
+
+ /* Update lengths. Sampling frequency could have changed */
+ L = psDec->frame_length;
+
+ /********************************************************/
+ /* Run inverse NSQ */
+ /********************************************************/
+ SKP_Silk_decode_core( psDec, &sDecCtrl, pOut, Pulses );
+
+ /********************************************************/
+ /* Update PLC state */
+ /********************************************************/
+ SKP_Silk_PLC( psDec, &sDecCtrl, pOut, L, action );
+
+ psDec->lossCnt = 0;
+ psDec->prev_sigtype = sDecCtrl.sigtype;
+
+ /* A frame has been decoded without errors */
+ psDec->first_frame_after_reset = 0;
+ }
+ }
+ /*************************************************************/
+ /* Generate Concealment Frame if packet is lost, or corrupt */
+ /*************************************************************/
+ if( action == 1 ) {
+ /* Handle packet loss by extrapolation */
+ SKP_Silk_PLC( psDec, &sDecCtrl, pOut, L, action );
+ psDec->lossCnt++;
+
+ }
+
+ /*************************/
+ /* Update output buffer. */
+ /*************************/
+ SKP_memcpy( psDec->outBuf, pOut, L * sizeof( SKP_int16 ) );
+
+ /****************************************************************/
+ /* Ensure smooth connection of extrapolated and good frames */
+ /****************************************************************/
+ SKP_Silk_PLC_glue_frames( psDec, &sDecCtrl, pOut, L );
+
+ /************************************************/
+ /* Comfort noise generation / estimation */
+ /************************************************/
+ SKP_Silk_CNG( psDec, &sDecCtrl, pOut , L );
+
+ /********************************************/
+ /* HP filter output */
+ /********************************************/
+ SKP_assert( ( ( psDec->fs_kHz == 12 ) && ( L % 3 ) == 0 ) ||
+ ( ( psDec->fs_kHz != 12 ) && ( L % 2 ) == 0 ) );
+ SKP_Silk_biquad( pOut, psDec->HP_B, psDec->HP_A, psDec->HPState, pOut, L );
+
+ /********************************************/
+ /* set output frame length */
+ /********************************************/
+ *pN = ( SKP_int16 )L;
+
+ /* Update some decoder state variables */
+ psDec->lagPrev = sDecCtrl.pitchL[ NB_SUBFR - 1 ];
+
+ return ret;
+}
--- /dev/null
+++ b/src/SKP_Silk_decode_indices_v4.c
@@ -1,0 +1,195 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_main.h"
+
+/* Decode indices from payload */
+void SKP_Silk_decode_indices_v4(
+ SKP_Silk_decoder_state *psDec /* I/O State */
+)
+{
+ SKP_int i, k, Ix, fs_kHz_dec, FrameIndex = 0, FrameTermination;
+ SKP_int sigtype, QuantOffsetType, seed_int, nBytesUsed;
+ SKP_int decode_absolute_lagIndex, delta_lagIndex, prev_lagIndex = 0;
+ const SKP_Silk_NLSF_CB_struct *psNLSF_CB = NULL;
+ SKP_Silk_range_coder_state *psRC = &psDec->sRC;
+ /************************/
+ /* Decode sampling rate */
+ /************************/
+ /* only done for first frame of packet */
+ if( psDec->nFramesDecoded == 0 ) {
+ SKP_Silk_range_decoder( &Ix, psRC, SKP_Silk_SamplingRates_CDF, SKP_Silk_SamplingRates_offset );
+
+ /* check that sampling rate is supported */
+ if( Ix < 0 || Ix > 3 ) {
+ psRC->error = RANGE_CODER_ILLEGAL_SAMPLING_RATE;
+ return;
+ }
+ fs_kHz_dec = SKP_Silk_SamplingRates_table[ Ix ];
+ SKP_Silk_decoder_set_fs( psDec, fs_kHz_dec );
+
+ FrameIndex = 0;
+ FrameTermination = SKP_SILK_MORE_FRAMES;
+ }
+
+ while( FrameTermination == SKP_SILK_MORE_FRAMES ) {
+ /*******************/
+ /* Decode VAD flag */
+ /*******************/
+ SKP_Silk_range_decoder( &psDec->vadFlagBuf[ FrameIndex ], psRC, SKP_Silk_vadflag_CDF, SKP_Silk_vadflag_offset );
+
+ /*******************************************/
+ /* Decode signal type and quantizer offset */
+ /*******************************************/
+ if( FrameIndex == 0 ) {
+ /* first frame in packet: independent coding */
+ SKP_Silk_range_decoder( &Ix, psRC, SKP_Silk_type_offset_CDF, SKP_Silk_type_offset_CDF_offset );
+ } else {
+ /* condidtional coding */
+ SKP_Silk_range_decoder( &Ix, psRC, SKP_Silk_type_offset_joint_CDF[ psDec->typeOffsetPrev ],
+ SKP_Silk_type_offset_CDF_offset );
+ }
+ sigtype = SKP_RSHIFT( Ix, 1 );
+ QuantOffsetType = Ix & 1;
+ psDec->typeOffsetPrev = Ix;
+
+ /****************/
+ /* Decode gains */
+ /****************/
+ /* first subframe */
+ if( FrameIndex == 0 ) {
+ /* first frame in packet: independent coding */
+ SKP_Silk_range_decoder( &psDec->GainsIndices[ FrameIndex ][ 0 ], psRC, SKP_Silk_gain_CDF[ sigtype ], SKP_Silk_gain_CDF_offset );
+ } else {
+ /* condidtional coding */
+ SKP_Silk_range_decoder( &psDec->GainsIndices[ FrameIndex ][ 0 ], psRC, SKP_Silk_delta_gain_CDF, SKP_Silk_delta_gain_CDF_offset );
+ }
+
+ /* remaining subframes */
+ for( i = 1; i < NB_SUBFR; i++ ) {
+ SKP_Silk_range_decoder( &psDec->GainsIndices[ FrameIndex ][ i ], psRC, SKP_Silk_delta_gain_CDF, SKP_Silk_delta_gain_CDF_offset );
+ }
+
+ /**********************/
+ /* Decode LSF Indices */
+ /**********************/
+
+ /* Set pointer to LSF VQ CB for the current signal type */
+ psNLSF_CB = psDec->psNLSF_CB[ sigtype ];
+
+ /* Arithmetically decode NLSF path */
+ SKP_Silk_range_decoder_multi( psDec->NLSFIndices[ FrameIndex ], psRC, psNLSF_CB->StartPtr, psNLSF_CB->MiddleIx, psNLSF_CB->nStages );
+
+ /***********************************/
+ /* Decode LSF interpolation factor */
+ /***********************************/
+ SKP_Silk_range_decoder( &psDec->NLSFInterpCoef_Q2[ FrameIndex ], psRC, SKP_Silk_NLSF_interpolation_factor_CDF,
+ SKP_Silk_NLSF_interpolation_factor_offset );
+
+ if( sigtype == SIG_TYPE_VOICED ) {
+ /*********************/
+ /* Decode pitch lags */
+ /*********************/
+ /* Get lag index */
+ decode_absolute_lagIndex = 1;
+ if( FrameIndex > 0 && psDec->sigtype[ FrameIndex - 1 ] == SIG_TYPE_VOICED ) {
+ /* Decode Delta index */
+ SKP_Silk_range_decoder( &delta_lagIndex,psRC, SKP_Silk_pitch_delta_CDF, SKP_Silk_pitch_delta_CDF_offset );
+ if( delta_lagIndex < ( MAX_DELTA_LAG << 1 ) + 1 ) {
+ delta_lagIndex = delta_lagIndex - MAX_DELTA_LAG;
+ psDec->lagIndex[ FrameIndex ] = prev_lagIndex + delta_lagIndex;
+ decode_absolute_lagIndex = 0;
+ }
+ }
+ if( decode_absolute_lagIndex ) {
+ /* Absolute decoding */
+ if( psDec->fs_kHz == 8 ) {
+ SKP_Silk_range_decoder( &psDec->lagIndex[ FrameIndex ], psRC, SKP_Silk_pitch_lag_NB_CDF, SKP_Silk_pitch_lag_NB_CDF_offset );
+ } else if( psDec->fs_kHz == 12 ) {
+ SKP_Silk_range_decoder( &psDec->lagIndex[ FrameIndex ], psRC, SKP_Silk_pitch_lag_MB_CDF, SKP_Silk_pitch_lag_MB_CDF_offset );
+ } else if( psDec->fs_kHz == 16 ) {
+ SKP_Silk_range_decoder( &psDec->lagIndex[ FrameIndex ], psRC, SKP_Silk_pitch_lag_WB_CDF, SKP_Silk_pitch_lag_WB_CDF_offset );
+ } else {
+ SKP_Silk_range_decoder( &psDec->lagIndex[ FrameIndex ], psRC, SKP_Silk_pitch_lag_SWB_CDF, SKP_Silk_pitch_lag_SWB_CDF_offset );
+ }
+ }
+ prev_lagIndex = psDec->lagIndex[ FrameIndex ];
+
+ /* Get countour index */
+ if( psDec->fs_kHz == 8 ) {
+ /* Less codevectors used in 8 khz mode */
+ SKP_Silk_range_decoder( &psDec->contourIndex[ FrameIndex ], psRC, SKP_Silk_pitch_contour_NB_CDF, SKP_Silk_pitch_contour_NB_CDF_offset );
+ } else {
+ /* Joint for 12, 16, and 24 khz */
+ SKP_Silk_range_decoder( &psDec->contourIndex[ FrameIndex ], psRC, SKP_Silk_pitch_contour_CDF, SKP_Silk_pitch_contour_CDF_offset );
+ }
+
+ /********************/
+ /* Decode LTP gains */
+ /********************/
+ /* Decode PERIndex value */
+ SKP_Silk_range_decoder( &psDec->PERIndex[ FrameIndex ], psRC, SKP_Silk_LTP_per_index_CDF, SKP_Silk_LTP_per_index_CDF_offset );
+
+ for( k = 0; k < NB_SUBFR; k++ ) {
+ SKP_Silk_range_decoder( &psDec->LTPIndex[ FrameIndex ][ k ], psRC, SKP_Silk_LTP_gain_CDF_ptrs[ psDec->PERIndex[ FrameIndex ] ],
+ SKP_Silk_LTP_gain_CDF_offsets[ psDec->PERIndex[ FrameIndex ] ] );
+ }
+
+ /**********************/
+ /* Decode LTP scaling */
+ /**********************/
+ SKP_Silk_range_decoder( &psDec->LTP_scaleIndex[ FrameIndex ], psRC, SKP_Silk_LTPscale_CDF, SKP_Silk_LTPscale_offset );
+ }
+
+ /***************/
+ /* Decode seed */
+ /***************/
+ SKP_Silk_range_decoder( &seed_int, psRC, SKP_Silk_Seed_CDF, SKP_Silk_Seed_offset );
+ psDec->Seed[ FrameIndex ] = ( SKP_int32 )seed_int;
+ /**************************************/
+ /* Decode Frame termination indicator */
+ /**************************************/
+ SKP_Silk_range_decoder( &FrameTermination, psRC, SKP_Silk_FrameTermination_v4_CDF, SKP_Silk_FrameTermination_v4_offset );
+
+ psDec->sigtype[ FrameIndex ] = sigtype;
+ psDec->QuantOffsetType[ FrameIndex ] = QuantOffsetType;
+
+ FrameIndex++;
+ }
+
+ /****************************************/
+ /* get number of bytes used so far */
+ /****************************************/
+ SKP_Silk_range_coder_get_length( psRC, &nBytesUsed );
+ psDec->nBytesLeft = psRC->bufferLength - nBytesUsed;
+ if( psDec->nBytesLeft < 0 ) {
+ psRC->error = RANGE_CODER_READ_BEYOND_BUFFER;
+ }
+
+ psDec->nFramesInPacket = FrameIndex;
+ psDec->FrameTermination = FrameTermination;
+}
--- /dev/null
+++ b/src/SKP_Silk_decode_parameters.c
@@ -1,0 +1,243 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_main.h"
+
+/* Decode parameters from payload */
+void SKP_Silk_decode_parameters(
+ SKP_Silk_decoder_state *psDec, /* I/O State */
+ SKP_Silk_decoder_control *psDecCtrl, /* I/O Decoder control */
+ SKP_int q[], /* O Excitation signal */
+ const SKP_int fullDecoding /* I Flag to tell if only arithmetic decoding */
+)
+{
+ SKP_int i, k, Ix, fs_kHz_dec, nBytesUsed;
+ SKP_int Ixs[ NB_SUBFR ];
+ SKP_int GainsIndices[ NB_SUBFR ];
+ SKP_int NLSFIndices[ NLSF_MSVQ_MAX_CB_STAGES ];
+ SKP_int pNLSF_Q15[ MAX_LPC_ORDER ], pNLSF0_Q15[ MAX_LPC_ORDER ];
+ const SKP_int16 *cbk_ptr_Q14;
+ const SKP_Silk_NLSF_CB_struct *psNLSF_CB = NULL;
+ SKP_Silk_range_coder_state *psRC = &psDec->sRC;
+
+ /************************/
+ /* Decode sampling rate */
+ /************************/
+ /* only done for first frame of packet */
+ if( psDec->nFramesDecoded == 0 ) {
+ SKP_Silk_range_decoder( &Ix, psRC, SKP_Silk_SamplingRates_CDF, SKP_Silk_SamplingRates_offset );
+
+ /* check that sampling rate is supported */
+ if( Ix < 0 || Ix > 3 ) {
+ psRC->error = RANGE_CODER_ILLEGAL_SAMPLING_RATE;
+ return;
+ }
+ fs_kHz_dec = SKP_Silk_SamplingRates_table[ Ix ];
+ SKP_Silk_decoder_set_fs( psDec, fs_kHz_dec );
+ }
+
+ /*******************************************/
+ /* Decode signal type and quantizer offset */
+ /*******************************************/
+ if( psDec->nFramesDecoded == 0 ) {
+ /* first frame in packet: independent coding */
+ SKP_Silk_range_decoder( &Ix, psRC, SKP_Silk_type_offset_CDF, SKP_Silk_type_offset_CDF_offset );
+ } else {
+ /* condidtional coding */
+ SKP_Silk_range_decoder( &Ix, psRC, SKP_Silk_type_offset_joint_CDF[ psDec->typeOffsetPrev ],
+ SKP_Silk_type_offset_CDF_offset );
+ }
+ psDecCtrl->sigtype = SKP_RSHIFT( Ix, 1 );
+ psDecCtrl->QuantOffsetType = Ix & 1;
+ psDec->typeOffsetPrev = Ix;
+
+ /****************/
+ /* Decode gains */
+ /****************/
+ /* first subframe */
+ if( psDec->nFramesDecoded == 0 ) {
+ /* first frame in packet: independent coding */
+ SKP_Silk_range_decoder( &GainsIndices[ 0 ], psRC, SKP_Silk_gain_CDF[ psDecCtrl->sigtype ], SKP_Silk_gain_CDF_offset );
+ } else {
+ /* condidtional coding */
+ SKP_Silk_range_decoder( &GainsIndices[ 0 ], psRC, SKP_Silk_delta_gain_CDF, SKP_Silk_delta_gain_CDF_offset );
+ }
+
+ /* remaining subframes */
+ for( i = 1; i < NB_SUBFR; i++ ) {
+ SKP_Silk_range_decoder( &GainsIndices[ i ], psRC, SKP_Silk_delta_gain_CDF, SKP_Silk_delta_gain_CDF_offset );
+ }
+
+ /* Dequant Gains */
+ SKP_Silk_gains_dequant( psDecCtrl->Gains_Q16, GainsIndices, &psDec->LastGainIndex, psDec->nFramesDecoded );
+ /****************/
+ /* Decode NLSFs */
+ /****************/
+ /* Set pointer to NLSF VQ CB for the current signal type */
+ psNLSF_CB = psDec->psNLSF_CB[ psDecCtrl->sigtype ];
+
+ /* Arithmetically decode NLSF path */
+ SKP_Silk_range_decoder_multi( NLSFIndices, psRC, psNLSF_CB->StartPtr, psNLSF_CB->MiddleIx, psNLSF_CB->nStages );
+
+ /* From the NLSF path, decode an NLSF vector */
+ SKP_Silk_NLSF_MSVQ_decode( pNLSF_Q15, psNLSF_CB, NLSFIndices, psDec->LPC_order );
+
+ /************************************/
+ /* Decode NLSF interpolation factor */
+ /************************************/
+ SKP_Silk_range_decoder( &psDecCtrl->NLSFInterpCoef_Q2, psRC, SKP_Silk_NLSF_interpolation_factor_CDF,
+ SKP_Silk_NLSF_interpolation_factor_offset );
+
+ /* If just reset, e.g., because internal Fs changed, do not allow interpolation */
+ /* improves the case of packet loss in the first frame after a switch */
+ if( psDec->first_frame_after_reset == 1 ) {
+ psDecCtrl->NLSFInterpCoef_Q2 = 4;
+ }
+
+ if( fullDecoding ) {
+ /* Convert NLSF parameters to AR prediction filter coefficients */
+ SKP_Silk_NLSF2A_stable( psDecCtrl->PredCoef_Q12[ 1 ], pNLSF_Q15, psDec->LPC_order );
+
+ if( psDecCtrl->NLSFInterpCoef_Q2 < 4 ) {
+ /* Calculation of the interpolated NLSF0 vector from the interpolation factor, */
+ /* the previous NLSF1, and the current NLSF1 */
+ for( i = 0; i < psDec->LPC_order; i++ ) {
+ pNLSF0_Q15[ i ] = psDec->prevNLSF_Q15[ i ] + SKP_RSHIFT( SKP_MUL( psDecCtrl->NLSFInterpCoef_Q2,
+ ( pNLSF_Q15[ i ] - psDec->prevNLSF_Q15[ i ] ) ), 2 );
+ }
+
+ /* Convert NLSF parameters to AR prediction filter coefficients */
+ SKP_Silk_NLSF2A_stable( psDecCtrl->PredCoef_Q12[ 0 ], pNLSF0_Q15, psDec->LPC_order );
+ } else {
+ /* Copy LPC coefficients for first half from second half */
+ SKP_memcpy( psDecCtrl->PredCoef_Q12[ 0 ], psDecCtrl->PredCoef_Q12[ 1 ],
+ psDec->LPC_order * sizeof( SKP_int16 ) );
+ }
+ }
+
+ SKP_memcpy( psDec->prevNLSF_Q15, pNLSF_Q15, psDec->LPC_order * sizeof( SKP_int ) );
+
+ /* After a packet loss do BWE of LPC coefs */
+ if( psDec->lossCnt ) {
+ SKP_Silk_bwexpander( psDecCtrl->PredCoef_Q12[ 0 ], psDec->LPC_order, BWE_AFTER_LOSS_Q16 );
+ SKP_Silk_bwexpander( psDecCtrl->PredCoef_Q12[ 1 ], psDec->LPC_order, BWE_AFTER_LOSS_Q16 );
+ }
+
+ if( psDecCtrl->sigtype == SIG_TYPE_VOICED ) {
+ /*********************/
+ /* Decode pitch lags */
+ /*********************/
+ /* Get lag index */
+ if( psDec->fs_kHz == 8 ) {
+ SKP_Silk_range_decoder( &Ixs[ 0 ], psRC, SKP_Silk_pitch_lag_NB_CDF, SKP_Silk_pitch_lag_NB_CDF_offset );
+ } else if( psDec->fs_kHz == 12 ) {
+ SKP_Silk_range_decoder( &Ixs[ 0 ], psRC, SKP_Silk_pitch_lag_MB_CDF, SKP_Silk_pitch_lag_MB_CDF_offset );
+ } else if( psDec->fs_kHz == 16 ) {
+ SKP_Silk_range_decoder( &Ixs[ 0 ], psRC, SKP_Silk_pitch_lag_WB_CDF, SKP_Silk_pitch_lag_WB_CDF_offset );
+ } else {
+ SKP_Silk_range_decoder( &Ixs[ 0 ], psRC, SKP_Silk_pitch_lag_SWB_CDF, SKP_Silk_pitch_lag_SWB_CDF_offset );
+ }
+
+ /* Get countour index */
+ if( psDec->fs_kHz == 8 ) {
+ /* Less codevectors used in 8 khz mode */
+ SKP_Silk_range_decoder( &Ixs[ 1 ], psRC, SKP_Silk_pitch_contour_NB_CDF, SKP_Silk_pitch_contour_NB_CDF_offset );
+ } else {
+ /* Joint for 12, 16, and 24 khz */
+ SKP_Silk_range_decoder( &Ixs[ 1 ], psRC, SKP_Silk_pitch_contour_CDF, SKP_Silk_pitch_contour_CDF_offset );
+ }
+
+ /* Decode pitch values */
+ SKP_Silk_decode_pitch( Ixs[ 0 ], Ixs[ 1 ], psDecCtrl->pitchL, psDec->fs_kHz );
+
+ /********************/
+ /* Decode LTP gains */
+ /********************/
+ /* Decode PERIndex value */
+ SKP_Silk_range_decoder( &psDecCtrl->PERIndex, psRC, SKP_Silk_LTP_per_index_CDF,
+ SKP_Silk_LTP_per_index_CDF_offset );
+
+ /* Decode Codebook Index */
+ cbk_ptr_Q14 = SKP_Silk_LTP_vq_ptrs_Q14[ psDecCtrl->PERIndex ]; // set pointer to start of codebook
+
+ for( k = 0; k < NB_SUBFR; k++ ) {
+ SKP_Silk_range_decoder( &Ix, psRC, SKP_Silk_LTP_gain_CDF_ptrs[ psDecCtrl->PERIndex ],
+ SKP_Silk_LTP_gain_CDF_offsets[ psDecCtrl->PERIndex ] );
+
+ for( i = 0; i < LTP_ORDER; i++ ) {
+ psDecCtrl->LTPCoef_Q14[ SKP_SMULBB( k, LTP_ORDER ) + i ] = cbk_ptr_Q14[ SKP_SMULBB( Ix, LTP_ORDER ) + i ];
+ }
+ }
+
+ /**********************/
+ /* Decode LTP scaling */
+ /**********************/
+ SKP_Silk_range_decoder( &Ix, psRC, SKP_Silk_LTPscale_CDF, SKP_Silk_LTPscale_offset );
+ psDecCtrl->LTP_scale_Q14 = SKP_Silk_LTPScales_table_Q14[ Ix ];
+ } else {
+ SKP_memset( psDecCtrl->pitchL, 0, NB_SUBFR * sizeof( SKP_int ) );
+ SKP_memset( psDecCtrl->LTPCoef_Q14, 0, NB_SUBFR * LTP_ORDER * sizeof( SKP_int16 ) );
+ psDecCtrl->PERIndex = 0;
+ psDecCtrl->LTP_scale_Q14 = 0;
+ }
+
+ /***************/
+ /* Decode seed */
+ /***************/
+ SKP_Silk_range_decoder( &Ix, psRC, SKP_Silk_Seed_CDF, SKP_Silk_Seed_offset );
+ psDecCtrl->Seed = ( SKP_int32 )Ix;
+ /*********************************************/
+ /* Decode quantization indices of excitation */
+ /*********************************************/
+ SKP_Silk_decode_pulses( psRC, psDecCtrl, q, psDec->frame_length );
+
+ /*********************************************/
+ /* Decode VAD flag */
+ /*********************************************/
+ SKP_Silk_range_decoder( &psDec->vadFlag, psRC, SKP_Silk_vadflag_CDF, SKP_Silk_vadflag_offset );
+
+ /**************************************/
+ /* Decode Frame termination indicator */
+ /**************************************/
+ SKP_Silk_range_decoder( &psDec->FrameTermination, psRC, SKP_Silk_FrameTermination_CDF, SKP_Silk_FrameTermination_offset );
+
+ /****************************************/
+ /* get number of bytes used so far */
+ /****************************************/
+ SKP_Silk_range_coder_get_length( psRC, &nBytesUsed );
+ psDec->nBytesLeft = psRC->bufferLength - nBytesUsed;
+ if( psDec->nBytesLeft < 0 ) {
+ psRC->error = RANGE_CODER_READ_BEYOND_BUFFER;
+ }
+
+ /****************************************/
+ /* check remaining bits in last byte */
+ /****************************************/
+ if( psDec->nBytesLeft == 0 ) {
+ SKP_Silk_range_coder_check_after_decoding( psRC );
+ }
+}
--- /dev/null
+++ b/src/SKP_Silk_decode_parameters_v4.c
@@ -1,0 +1,157 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_main.h"
+
+/* Decode parameters from payload */
+void SKP_Silk_decode_parameters_v4(
+ SKP_Silk_decoder_state *psDec, /* I/O State */
+ SKP_Silk_decoder_control *psDecCtrl, /* I/O Decoder control */
+ SKP_int q[ MAX_FRAME_LENGTH ], /* O Excitation signal */
+ const SKP_int fullDecoding /* I Flag to tell if only arithmetic decoding */
+)
+{
+ SKP_int i, k, Ix, nBytesUsed;
+ SKP_int pNLSF_Q15[ MAX_LPC_ORDER ], pNLSF0_Q15[ MAX_LPC_ORDER ];
+ const SKP_int16 *cbk_ptr_Q14;
+ const SKP_Silk_NLSF_CB_struct *psNLSF_CB = NULL;
+ SKP_Silk_range_coder_state *psRC = &psDec->sRC;
+
+ psDec->FrameTermination = SKP_SILK_MORE_FRAMES;
+ psDecCtrl->sigtype = psDec->sigtype[ psDec->nFramesDecoded ];
+ psDecCtrl->QuantOffsetType = psDec->QuantOffsetType[ psDec->nFramesDecoded ];
+ psDec->vadFlag = psDec->vadFlagBuf[ psDec->nFramesDecoded ];
+ psDecCtrl->NLSFInterpCoef_Q2 = psDec->NLSFInterpCoef_Q2[ psDec->nFramesDecoded ];
+ psDecCtrl->Seed = psDec->Seed[ psDec->nFramesDecoded ];
+
+ /* Dequant Gains */
+ SKP_Silk_gains_dequant( psDecCtrl->Gains_Q16, psDec->GainsIndices[ psDec->nFramesDecoded ], &psDec->LastGainIndex, psDec->nFramesDecoded );
+ /****************/
+ /* Decode NLSFs */
+ /****************/
+
+ /* Set pointer to NLSF VQ CB for the current signal type */
+ psNLSF_CB = psDec->psNLSF_CB[ psDecCtrl->sigtype ];
+
+ /* From the NLSF path, decode an NLSF vector */
+ SKP_Silk_NLSF_MSVQ_decode( pNLSF_Q15, psNLSF_CB, psDec->NLSFIndices[ psDec->nFramesDecoded ], psDec->LPC_order );
+
+ /* Convert NLSF parameters to AR prediction filter coefficients */
+ SKP_Silk_NLSF2A_stable( psDecCtrl->PredCoef_Q12[ 1 ], pNLSF_Q15, psDec->LPC_order );
+
+ /* If just reset, e.g., because internal Fs changed, do not allow interpolation */
+ /* improves the case of packet loss in the first frame after a switch */
+ if( psDec->first_frame_after_reset == 1 ) {
+ psDecCtrl->NLSFInterpCoef_Q2 = 4;
+ }
+
+ if( psDecCtrl->NLSFInterpCoef_Q2 < 4 ) {
+ /* Calculation of the interpolated NLSF0 vector from the interpolation factor, */
+ /* the previous NLSF1, and the current NLSF1 */
+ for( i = 0; i < psDec->LPC_order; i++ ) {
+ pNLSF0_Q15[ i ] = psDec->prevNLSF_Q15[ i ] + SKP_RSHIFT( SKP_MUL( psDecCtrl->NLSFInterpCoef_Q2,
+ ( pNLSF_Q15[ i ] - psDec->prevNLSF_Q15[ i ] ) ), 2 );
+ }
+
+ /* Convert NLSF parameters to AR prediction filter coefficients */
+ SKP_Silk_NLSF2A_stable( psDecCtrl->PredCoef_Q12[ 0 ], pNLSF0_Q15, psDec->LPC_order );
+ } else {
+ /* Copy LPC coefficients for first half from second half */
+ SKP_memcpy( psDecCtrl->PredCoef_Q12[ 0 ], psDecCtrl->PredCoef_Q12[ 1 ],
+ psDec->LPC_order * sizeof( SKP_int16 ) );
+ }
+
+ SKP_memcpy( psDec->prevNLSF_Q15, pNLSF_Q15, psDec->LPC_order * sizeof( SKP_int ) );
+
+ /* After a packet loss do BWE of LPC coefs */
+ if( psDec->lossCnt ) {
+ SKP_Silk_bwexpander( psDecCtrl->PredCoef_Q12[ 0 ], psDec->LPC_order, BWE_AFTER_LOSS_Q16 );
+ SKP_Silk_bwexpander( psDecCtrl->PredCoef_Q12[ 1 ], psDec->LPC_order, BWE_AFTER_LOSS_Q16 );
+ }
+
+ if( psDecCtrl->sigtype == SIG_TYPE_VOICED ) {
+ /*********************/
+ /* Decode pitch lags */
+ /*********************/
+
+ /* Decode pitch values */
+ SKP_Silk_decode_pitch( psDec->lagIndex[ psDec->nFramesDecoded ],
+ psDec->contourIndex[ psDec->nFramesDecoded ], psDecCtrl->pitchL, psDec->fs_kHz );
+
+ /********************/
+ /* Decode LTP gains */
+ /********************/
+ psDecCtrl->PERIndex = psDec->PERIndex[ psDec->nFramesDecoded ];
+
+ /* Decode Codebook Index */
+ cbk_ptr_Q14 = SKP_Silk_LTP_vq_ptrs_Q14[ psDecCtrl->PERIndex ]; /* set pointer to start of codebook */
+
+ for( k = 0; k < NB_SUBFR; k++ ) {
+ Ix = psDec->LTPIndex[ psDec->nFramesDecoded ][ k ];
+ for( i = 0; i < LTP_ORDER; i++ ) {
+ psDecCtrl->LTPCoef_Q14[ SKP_SMULBB( k, LTP_ORDER ) + i ] = cbk_ptr_Q14[ SKP_SMULBB( Ix, LTP_ORDER ) + i ];
+ }
+ }
+
+ /**********************/
+ /* Decode LTP scaling */
+ /**********************/
+ Ix = psDec->LTP_scaleIndex[ psDec->nFramesDecoded ];
+ psDecCtrl->LTP_scale_Q14 = SKP_Silk_LTPScales_table_Q14[ Ix ];
+ } else {
+ SKP_memset( psDecCtrl->pitchL, 0, NB_SUBFR * sizeof( SKP_int ) );
+ SKP_memset( psDecCtrl->LTPCoef_Q14, 0, NB_SUBFR * LTP_ORDER * sizeof( SKP_int16 ) );
+ psDecCtrl->PERIndex = 0;
+ psDecCtrl->LTP_scale_Q14 = 0;
+ }
+
+ /*********************************************/
+ /* Decode quantization indices of excitation */
+ /*********************************************/
+ SKP_Silk_decode_pulses( psRC, psDecCtrl, q, psDec->frame_length );
+
+ /****************************************/
+ /* get number of bytes used so far */
+ /****************************************/
+ SKP_Silk_range_coder_get_length( psRC, &nBytesUsed );
+ psDec->nBytesLeft = psRC->bufferLength - nBytesUsed;
+ if( psDec->nBytesLeft < 0 ) {
+ psRC->error = RANGE_CODER_READ_BEYOND_BUFFER;
+ }
+
+ /****************************************/
+ /* check remaining bits in last byte */
+ /****************************************/
+ if( psDec->nBytesLeft == 0 ) {
+ SKP_Silk_range_coder_check_after_decoding( psRC );
+ }
+
+ if( psDec->nFramesInPacket == (psDec->nFramesDecoded + 1)) {
+ /* To indicate the packet has been fully decoded */
+ psDec->FrameTermination = SKP_SILK_LAST_FRAME;
+ }
+}
--- /dev/null
+++ b/src/SKP_Silk_decode_pulses.c
@@ -1,0 +1,105 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_main.h"
+
+/*********************************************/
+/* Decode quantization indices of excitation */
+/*********************************************/
+void SKP_Silk_decode_pulses(
+ SKP_Silk_range_coder_state *psRC, /* I/O Range coder state */
+ SKP_Silk_decoder_control *psDecCtrl, /* I/O Decoder control */
+ SKP_int q[], /* O Excitation signal */
+ const SKP_int frame_length /* I Frame length (preliminary) */
+)
+{
+ SKP_int i, j, k, iter, abs_q, nLS, bit;
+ SKP_int sum_pulses[ MAX_NB_SHELL_BLOCKS ], nLshifts[ MAX_NB_SHELL_BLOCKS ];
+ SKP_int *pulses_ptr;
+ const SKP_uint16 *cdf_ptr;
+
+ /*********************/
+ /* Decode rate level */
+ /*********************/
+ SKP_Silk_range_decoder( &psDecCtrl->RateLevelIndex, psRC,
+ SKP_Silk_rate_levels_CDF[ psDecCtrl->sigtype ], SKP_Silk_rate_levels_CDF_offset );
+
+ /* Calculate number of shell blocks */
+ iter = frame_length / SHELL_CODEC_FRAME_LENGTH;
+
+ /***************************************************/
+ /* Sum-Weighted-Pulses Decoding */
+ /***************************************************/
+ cdf_ptr = SKP_Silk_pulses_per_block_CDF[ psDecCtrl->RateLevelIndex ];
+ for( i = 0; i < iter; i++ ) {
+ nLshifts[ i ] = 0;
+ SKP_Silk_range_decoder( &sum_pulses[ i ], psRC, cdf_ptr, SKP_Silk_pulses_per_block_CDF_offset );
+
+ /* LSB indication */
+ while( sum_pulses[ i ] == ( MAX_PULSES + 1 ) ) {
+ nLshifts[ i ]++;
+ SKP_Silk_range_decoder( &sum_pulses[ i ], psRC,
+ SKP_Silk_pulses_per_block_CDF[ N_RATE_LEVELS - 1 ], SKP_Silk_pulses_per_block_CDF_offset );
+ }
+ }
+
+ /***************************************************/
+ /* Shell decoding */
+ /***************************************************/
+ for( i = 0; i < iter; i++ ) {
+ if( sum_pulses[ i ] > 0 ) {
+ SKP_Silk_shell_decoder( &q[ SKP_SMULBB( i, SHELL_CODEC_FRAME_LENGTH ) ], psRC, sum_pulses[ i ] );
+ } else {
+ SKP_memset( &q[ SKP_SMULBB( i, SHELL_CODEC_FRAME_LENGTH ) ], 0, SHELL_CODEC_FRAME_LENGTH * sizeof( SKP_int ) );
+ }
+ }
+
+ /***************************************************/
+ /* LSB Decoding */
+ /***************************************************/
+ for( i = 0; i < iter; i++ ) {
+ if( nLshifts[ i ] > 0 ) {
+ nLS = nLshifts[ i ];
+ pulses_ptr = &q[ SKP_SMULBB( i, SHELL_CODEC_FRAME_LENGTH ) ];
+ for( k = 0; k < SHELL_CODEC_FRAME_LENGTH; k++ ) {
+ abs_q = pulses_ptr[ k ];
+ for( j = 0; j < nLS; j++ ) {
+ abs_q = SKP_LSHIFT( abs_q, 1 );
+ SKP_Silk_range_decoder( &bit, psRC, SKP_Silk_lsb_CDF, 1 );
+ abs_q += bit;
+ }
+ pulses_ptr[ k ] = abs_q;
+ }
+ }
+ }
+
+ /****************************************/
+ /* Decode and add signs to pulse signal */
+ /****************************************/
+ SKP_Silk_decode_signs( psRC, q, frame_length, psDecCtrl->sigtype,
+ psDecCtrl->QuantOffsetType, psDecCtrl->RateLevelIndex);
+}
--- /dev/null
+++ b/src/SKP_Silk_decoder_set_fs.c
@@ -1,0 +1,81 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_main.h"
+
+/* Set decoder sampling rate */
+void SKP_Silk_decoder_set_fs(
+ SKP_Silk_decoder_state *psDec, /* I/O Decoder state pointer */
+ SKP_int fs_kHz /* I Sampling frequency (kHz) */
+)
+{
+ if( psDec->fs_kHz != fs_kHz ) {
+ psDec->fs_kHz = fs_kHz;
+ psDec->frame_length = SKP_SMULBB( FRAME_LENGTH_MS, fs_kHz );
+ psDec->subfr_length = SKP_SMULBB( FRAME_LENGTH_MS / NB_SUBFR, fs_kHz );
+ if( psDec->fs_kHz == 8 ) {
+ psDec->LPC_order = MIN_LPC_ORDER;
+ psDec->psNLSF_CB[ 0 ] = &SKP_Silk_NLSF_CB0_10;
+ psDec->psNLSF_CB[ 1 ] = &SKP_Silk_NLSF_CB1_10;
+ } else {
+ psDec->LPC_order = MAX_LPC_ORDER;
+ psDec->psNLSF_CB[ 0 ] = &SKP_Silk_NLSF_CB0_16;
+ psDec->psNLSF_CB[ 1 ] = &SKP_Silk_NLSF_CB1_16;
+ }
+ /* Reset part of the decoder state */
+ SKP_memset( psDec->sLPC_Q14, 0, MAX_LPC_ORDER * sizeof( SKP_int32 ) );
+ SKP_memset( psDec->outBuf, 0, MAX_FRAME_LENGTH * sizeof( SKP_int16 ) );
+ SKP_memset( psDec->prevNLSF_Q15, 0, MAX_LPC_ORDER * sizeof( SKP_int ) );
+
+ psDec->sLTP_buf_idx = 0;
+ psDec->lagPrev = 100;
+ psDec->LastGainIndex = 1;
+ psDec->prev_sigtype = 0;
+ psDec->first_frame_after_reset = 1;
+
+ if( fs_kHz == 24 ) {
+ psDec->HP_A = SKP_Silk_Dec_A_HP_24;
+ psDec->HP_B = SKP_Silk_Dec_B_HP_24;
+ } else if( fs_kHz == 16 ) {
+ psDec->HP_A = SKP_Silk_Dec_A_HP_16;
+ psDec->HP_B = SKP_Silk_Dec_B_HP_16;
+ } else if( fs_kHz == 12 ) {
+ psDec->HP_A = SKP_Silk_Dec_A_HP_12;
+ psDec->HP_B = SKP_Silk_Dec_B_HP_12;
+ } else if( fs_kHz == 8 ) {
+ psDec->HP_A = SKP_Silk_Dec_A_HP_8;
+ psDec->HP_B = SKP_Silk_Dec_B_HP_8;
+ } else {
+ /* unsupported sampling rate */
+ SKP_assert( 0 );
+ }
+ }
+
+ /* Check that settings are valid */
+ SKP_assert( psDec->frame_length > 0 && psDec->frame_length <= MAX_FRAME_LENGTH );
+}
+
--- /dev/null
+++ b/src/SKP_Silk_define.h
@@ -1,0 +1,330 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#ifndef SKP_SILK_DEFINE_H
+#define SKP_SILK_DEFINE_H
+
+#include "SKP_Silk_errors.h"
+#include "SKP_Silk_typedef.h"
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+
+#define MAX_FRAMES_PER_PACKET 5
+#define BIT_STREAM_V3 3
+#define BIT_STREAM_V4 4
+#define USE_BIT_STREAM_V BIT_STREAM_V3 // Should be moved to a API call
+
+
+/* MAX DELTA LAG used for multiframe packets */
+#define MAX_DELTA_LAG 10
+
+/* Lower limit on bitrate for each mode */
+#define MIN_TARGET_RATE_NB_BPS 5000
+#define MIN_TARGET_RATE_MB_BPS 7000
+#define MIN_TARGET_RATE_WB_BPS 8000
+#define MIN_TARGET_RATE_SWB_BPS 20000
+
+/* Transition bitrates between modes */
+#define SWB2WB_BITRATE_BPS 30000
+#define SWB2WB_BITRATE_BPS_INITIAL 25000
+#define WB2SWB_BITRATE_BPS 35000
+#define WB2MB_BITRATE_BPS 15000
+#define MB2WB_BITRATE_BPS 20000
+#define MB2NB_BITRATE_BPS 10000
+#define NB2MB_BITRATE_BPS 14000
+
+/* Integration/hysteresis threshold for lowering internal sample frequency */
+/* 30000000 -> 6 sec if bitrate is 5000 bps below limit; 3 sec if bitrate is 10000 bps below limit */
+#define ACCUM_BITS_DIFF_THRESHOLD 30000000
+#define TARGET_RATE_TAB_SZ 8
+
+/* DTX settings */
+#define NO_SPEECH_FRAMES_BEFORE_DTX 5 /* eq 100 ms */
+#define MAX_CONSECUTIVE_DTX 20 /* eq 400 ms */
+
+#define USE_LBRR 1
+
+/* Amount of concecutive no FEC packets before telling JB */
+#define NO_LBRR_THRES 10
+
+/* Maximum delay between real packet and LBRR packet */
+#define MAX_LBRR_DELAY 2
+#define LBRR_IDX_MASK 1
+
+#define INBAND_FEC_MIN_RATE_BPS 18000 /* Dont use inband FEC below this total target rate */
+#define LBRR_LOSS_THRES 2 /* Start adding LBRR at this loss rate (needs tuning) */
+
+/* LBRR usage defines */
+#define SKP_SILK_NO_LBRR 0 /* No LBRR information for this packet */
+#define SKP_SILK_ADD_LBRR_TO_PLUS1 1 /* Add LBRR for this packet to packet n + 1 */
+#define SKP_SILK_ADD_LBRR_TO_PLUS2 2 /* Add LBRR for this packet to packet n + 2 */
+
+/* Frame termination indicator defines */
+#define SKP_SILK_LAST_FRAME 0 /* Last frames in packet */
+#define SKP_SILK_MORE_FRAMES 1 /* More frames to follow this one */
+#define SKP_SILK_LBRR_VER1 2 /* LBRR information from packet n - 1 */
+#define SKP_SILK_LBRR_VER2 3 /* LBRR information from packet n - 2 */
+#define SKP_SILK_EXT_LAYER 4 /* Extension layers added */
+
+/* Number of Second order Sections for SWB detection HP filter */
+#define NB_SOS 3
+#define HP_8_KHZ_THRES 10 /* average energy per sample, above 8 kHz */
+#define CONCEC_SWB_SMPLS_THRES 480 * 15 /* 300 ms */
+#define WB_DETECT_ACTIVE_SPEECH_MS_THRES 15000 /* ms of active speech needed for WB detection */
+
+/* Low complexity setting */
+#ifdef EMBEDDED_OPT
+# define LOW_COMPLEXITY_ONLY 1
+#else
+# define LOW_COMPLEXITY_ONLY 0
+#endif
+
+/* Activate bandwidth transition filtering for mode switching */
+#ifdef EMBEDDED_OPT
+# define SWITCH_TRANSITION_FILTERING 0
+#else
+#ifndef FORCE_FS_KHZ
+# define SWITCH_TRANSITION_FILTERING 1
+#else
+# define SWITCH_TRANSITION_FILTERING 0
+#endif
+#endif
+
+/* Decoder Parameters */
+#define DEC_HP_ORDER 2
+
+/* Maximum sampling frequency, should be 16 for embedded */
+#define MAX_FS_KHZ 24
+
+/* Signal Types used by silk */
+#define SIG_TYPE_VOICED 0
+#define SIG_TYPE_UNVOICED 1
+
+/* VAD Types used by silk */
+#define NO_VOICE_ACTIVITY 0
+#define VOICE_ACTIVITY 1
+
+/* number of samples per frame */
+#define FRAME_LENGTH_MS 20 /* 20 ms */
+#define MAX_FRAME_LENGTH (FRAME_LENGTH_MS * MAX_FS_KHZ)
+
+/* number of lookahead samples for pitch analysis */
+#define LA_PITCH_MS 3
+#define LA_PITCH_MAX (LA_PITCH_MS * MAX_FS_KHZ)
+
+/* number of lookahead samples for noise shape analysis */
+#define LA_SHAPE_MS 5
+#define LA_SHAPE_MAX (LA_SHAPE_MS * MAX_FS_KHZ)
+
+/* Order of LPC used in find pitch */
+#define FIND_PITCH_LPC_ORDER_MAX 16
+
+/* Length of LPC window used in find pitch */
+#define FIND_PITCH_LPC_WIN_MS (30 + (LA_PITCH_MS << 1))
+#define FIND_PITCH_LPC_WIN_MAX (FIND_PITCH_LPC_WIN_MS * MAX_FS_KHZ)
+
+#define PITCH_EST_COMPLEXITY_HC_MODE SigProc_PITCH_EST_MAX_COMPLEX
+#define PITCH_EST_COMPLEXITY_MC_MODE SigProc_PITCH_EST_MID_COMPLEX
+#define PITCH_EST_COMPLEXITY_LC_MODE SigProc_PITCH_EST_MIN_COMPLEX
+
+
+/* Max number of bytes in payload output buffer (may contain multiple frames) */
+#define MAX_ARITHM_BYTES 1024
+
+#define RANGE_CODER_WRITE_BEYOND_BUFFER -1
+#define RANGE_CODER_CDF_OUT_OF_RANGE -2
+#define RANGE_CODER_NORMALIZATION_FAILED -3
+#define RANGE_CODER_ZERO_INTERVAL_WIDTH -4
+#define RANGE_CODER_DECODER_CHECK_FAILED -5
+#define RANGE_CODER_READ_BEYOND_BUFFER -6
+#define RANGE_CODER_ILLEGAL_SAMPLING_RATE -7
+#define RANGE_CODER_DEC_PAYLOAD_TOO_LONG -8
+
+/* dB level of lowest gain quantization level */
+#define MIN_QGAIN_DB 6
+/* dB level of highest gain quantization level */
+#define MAX_QGAIN_DB 86
+/* Number of gain quantization levels */
+#define N_LEVELS_QGAIN 64
+/* Max increase in gain quantization index */
+#define MAX_DELTA_GAIN_QUANT 40
+/* Max decrease in gain quantization index */
+#define MIN_DELTA_GAIN_QUANT -4
+
+/* Quantization offsets (multiples of 4) */
+#define OFFSET_VL_Q10 32
+#define OFFSET_VH_Q10 100
+#define OFFSET_UVL_Q10 100
+#define OFFSET_UVH_Q10 256
+
+/* Maximum numbers of iterations used to stabilize a LPC vector */
+#define MAX_LPC_STABILIZE_ITERATIONS 20
+
+#define MAX_LPC_ORDER 16
+#define MIN_LPC_ORDER 10
+
+/* Find Pred Coef defines */
+#define LTP_ORDER 5
+
+/* LTP quantization settings */
+#define NB_LTP_CBKS 3
+
+/* Number of subframes */
+#define NB_SUBFR 4
+
+/* Flag to use harmonic noise shaping */
+#define USE_HARM_SHAPING 1
+
+/* Max LPC order of noise shaping filters */
+#define SHAPE_LPC_ORDER_MAX 16
+
+#define HARM_SHAPE_FIR_TAPS 3
+
+/* Length of LPC window used in noise shape analysis */
+#define SHAPE_LPC_WIN_MS 15
+#define SHAPE_LPC_WIN_16_KHZ (SHAPE_LPC_WIN_MS * 16)
+#define SHAPE_LPC_WIN_24_KHZ (SHAPE_LPC_WIN_MS * 24)
+#define SHAPE_LPC_WIN_MAX (SHAPE_LPC_WIN_MS * MAX_FS_KHZ)
+
+/* Maximum number of delayed decision states */
+#define DEL_DEC_STATES_MAX 4
+
+#define LTP_BUF_LENGTH 512
+#define LTP_MASK (LTP_BUF_LENGTH - 1)
+
+#define DECISION_DELAY 32
+#define DECISION_DELAY_MASK (DECISION_DELAY - 1)
+
+/* number of subframes for excitation entropy coding */
+#define SHELL_CODEC_FRAME_LENGTH 16
+#define MAX_NB_SHELL_BLOCKS (MAX_FRAME_LENGTH / SHELL_CODEC_FRAME_LENGTH)
+
+/* number of rate levels, for entropy coding of excitation */
+#define N_RATE_LEVELS 10
+
+/* maximum sum of pulses per shell coding frame */
+#define MAX_PULSES 18
+
+#define MAX_MATRIX_SIZE MAX_LPC_ORDER /* Max of LPC Order and LTP order */
+
+#if( MAX_LPC_ORDER > DECISION_DELAY )
+# define NSQ_LPC_BUF_LENGTH MAX_LPC_ORDER
+#else
+# define NSQ_LPC_BUF_LENGTH DECISION_DELAY
+#endif
+
+/***********************/
+/* High pass filtering */
+/***********************/
+#define HIGH_PASS_INPUT 1
+
+/***************************/
+/* Voice activity detector */
+/***************************/
+#define VAD_N_BANDS 4 /* 0-1, 1-2, 2-4, and 4-8 kHz */
+
+#define VAD_INTERNAL_SUBFRAMES_LOG2 2
+#define VAD_INTERNAL_SUBFRAMES (1 << VAD_INTERNAL_SUBFRAMES_LOG2)
+
+#define VAD_NOISE_LEVEL_SMOOTH_COEF_Q16 1024 /* Must be < 4096 */
+#define VAD_NOISE_LEVELS_BIAS 50
+
+/* Sigmoid settings */
+#define VAD_NEGATIVE_OFFSET_Q5 128 /* sigmoid is 0 at -128 */
+#define VAD_SNR_FACTOR_Q16 45000
+
+/* smoothing for SNR measurement */
+#define VAD_SNR_SMOOTH_COEF_Q18 4096
+
+/******************/
+/* NLSF quantizer */
+/******************/
+#ifdef NLSF_TRAINING
+# define NLSF_MSVQ_MAX_CB_STAGES 30
+# define NLSF_MSVQ_MAX_VECTORS_IN_STAGE 256
+# define NLSF_MSVQ_MAX_VECTORS_IN_STAGE_TWO_TO_END 128
+#else
+# define NLSF_MSVQ_MAX_CB_STAGES 10 /* Update manually when changing codebooks */
+# define NLSF_MSVQ_MAX_VECTORS_IN_STAGE 128 /* Update manually when changing codebooks */
+# define NLSF_MSVQ_MAX_VECTORS_IN_STAGE_TWO_TO_END 16 /* Update manually when changing codebooks */
+#endif
+
+#define NLSF_MSVQ_FLUCTUATION_REDUCTION 1
+#define MAX_NLSF_MSVQ_SURVIVORS 16
+#define MAX_NLSF_MSVQ_SURVIVORS_LC_MODE 2
+#define MAX_NLSF_MSVQ_SURVIVORS_MC_MODE 4
+
+/* Based on above defines, calculate how much memory is necessary to allocate */
+#if( NLSF_MSVQ_MAX_VECTORS_IN_STAGE > ( MAX_NLSF_MSVQ_SURVIVORS_LC_MODE * NLSF_MSVQ_MAX_VECTORS_IN_STAGE_TWO_TO_END ) )
+# define NLSF_MSVQ_TREE_SEARCH_MAX_VECTORS_EVALUATED_LC_MODE NLSF_MSVQ_MAX_VECTORS_IN_STAGE
+#else
+# define NLSF_MSVQ_TREE_SEARCH_MAX_VECTORS_EVALUATED_LC_MODE MAX_NLSF_MSVQ_SURVIVORS_LC_MODE * NLSF_MSVQ_MAX_VECTORS_IN_STAGE_TWO_TO_END
+#endif
+
+#if( NLSF_MSVQ_MAX_VECTORS_IN_STAGE > ( MAX_NLSF_MSVQ_SURVIVORS * NLSF_MSVQ_MAX_VECTORS_IN_STAGE_TWO_TO_END ) )
+# define NLSF_MSVQ_TREE_SEARCH_MAX_VECTORS_EVALUATED NLSF_MSVQ_MAX_VECTORS_IN_STAGE
+#else
+# define NLSF_MSVQ_TREE_SEARCH_MAX_VECTORS_EVALUATED MAX_NLSF_MSVQ_SURVIVORS * NLSF_MSVQ_MAX_VECTORS_IN_STAGE_TWO_TO_END
+#endif
+
+#define NLSF_MSVQ_SURV_MAX_REL_RD 4
+
+/* Transition filtering for mode switching */
+#if SWITCH_TRANSITION_FILTERING
+# define TRANSITION_TIME_UP_MS 5120 // 5120 = 64 * FRAME_LENGTH_MS * ( TRANSITION_INT_NUM - 1 ) = 64*(20*4)
+# define TRANSITION_TIME_DOWN_MS 2560 // 2560 = 32 * FRAME_LENGTH_MS * ( TRANSITION_INT_NUM - 1 ) = 32*(20*4)
+# define TRANSITION_NB 3 /* Hardcoded in tables */
+# define TRANSITION_NA 2 /* Hardcoded in tables */
+# define TRANSITION_INT_NUM 5 /* Hardcoded in tables */
+# define TRANSITION_FRAMES_UP ( TRANSITION_TIME_UP_MS / FRAME_LENGTH_MS )
+# define TRANSITION_FRAMES_DOWN ( TRANSITION_TIME_DOWN_MS / FRAME_LENGTH_MS )
+# define TRANSITION_INT_STEPS_UP ( TRANSITION_FRAMES_UP / ( TRANSITION_INT_NUM - 1 ) )
+# define TRANSITION_INT_STEPS_DOWN ( TRANSITION_FRAMES_DOWN / ( TRANSITION_INT_NUM - 1 ) )
+#endif
+
+/* Row based */
+#define matrix_ptr(Matrix_base_adr, row, column, N) *(Matrix_base_adr + ((row)*(N)+(column)))
+#define matrix_adr(Matrix_base_adr, row, column, N) (Matrix_base_adr + ((row)*(N)+(column)))
+
+/* Column based */
+#ifndef matrix_c_ptr
+# define matrix_c_ptr(Matrix_base_adr, row, column, M) *(Matrix_base_adr + ((row)+(M)*(column)))
+#endif
+#define matrix_c_adr(Matrix_base_adr, row, column, M) (Matrix_base_adr + ((row)+(M)*(column)))
+
+/* BWE factors to apply after packet loss */
+#define BWE_AFTER_LOSS_Q16 63570
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
--- /dev/null
+++ b/src/SKP_Silk_define_FIX.h
@@ -1,0 +1,97 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#ifndef SKP_SILK_DEFINE_FIX_H
+#define SKP_SILK_DEFINE_FIX_H
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+/* Head room for correlations */
+#define LTP_CORRS_HEAD_ROOM 2
+#define LPC_CORRS_HEAD_ROOM 10
+
+#define WB_DETECT_ACTIVE_SPEECH_LEVEL_THRES_Q8 179 // 179.2_Q8 = 0.7f required speech activity for counting frame as active
+
+/* DTX settings */
+#define SPEECH_ACTIVITY_DTX_THRES_Q8 26 // 25.60_Q8 = 0.1f
+
+#define LBRR_SPEECH_ACTIVITY_THRES_Q8 128
+
+/* level of noise floor for whitening filter LPC analysis in pitch analysis */
+#define FIND_PITCH_WHITE_NOISE_FRACTION_Q16 66
+
+/* bandwdith expansion for whitening filter in pitch analysis */
+#define FIND_PITCH_BANDWITH_EXPANSION_Q16 64881
+
+/* Threshold used by pitch estimator for early escape */
+#define FIND_PITCH_CORRELATION_THRESHOLD_Q16_HC_MODE 45875 // 0.7
+#define FIND_PITCH_CORRELATION_THRESHOLD_Q16_MC_MODE 49152 // 0.75
+#define FIND_PITCH_CORRELATION_THRESHOLD_Q16_LC_MODE 52429 // 0.8
+
+/* Regualarization factor for correlation matrix. Equivalent to adding noise at -50 dB */
+#define FIND_LTP_COND_FAC_Q31 21475
+#define FIND_LPC_COND_FAC_Q32 257698 // 6e-5
+
+/* Find Pred Coef defines */
+#define INACTIVE_BWExp_Q16 64225 // 0.98
+#define ACTIVE_BWExp_Q16 65470 // 0.999
+#define LTP_DAMPING_Q16 66
+#define LTP_SMOOTHING_Q26 6710886
+
+/* LTP quantization settings */
+#define MU_LTP_QUANT_NB_Q8 8
+#define MU_LTP_QUANT_MB_Q8 6
+#define MU_LTP_QUANT_WB_Q8 5
+#define MU_LTP_QUANT_SWB_Q8 4
+
+/***********************/
+/* High pass filtering */
+/***********************/
+/* Smoothing parameters for low end of pitch frequency range estimation */
+#define VARIABLE_HP_SMTH_COEF1_Q16 6554 // 0.1
+#define VARIABLE_HP_SMTH_COEF2_Q16 983 // 0.015
+
+/* Min and max values for low end of pitch frequency range estimation */
+#define VARIABLE_HP_MIN_FREQ_Q0 80
+#define VARIABLE_HP_MAX_FREQ_Q0 150
+
+/* Max absolute difference between log2 of pitch frequency and smoother state, to enter the smoother */
+#define VARIABLE_HP_MAX_DELTA_FREQ_Q7 51 // 0.4 in Q7
+
+/* Defines for CN generation */
+#define CNG_BUF_MASK_MAX 255 /* 2^floor(log2(MAX_FRAME_LENGTH)) */
+#define CNG_GAIN_SMTH_Q16 4634 /* 0.25^(1/4) */
+#define CNG_NLSF_SMTH_Q16 16348 /* 0.25 */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
--- /dev/null
+++ b/src/SKP_Silk_detect_SWB_input.c
@@ -1,0 +1,76 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+/*
+ * Detect SWB input by measuring energy above 8 kHz.
+ */
+
+#include "SKP_Silk_main.h"
+
+void SKP_Silk_detect_SWB_input(
+ SKP_Silk_detect_SWB_state *psSWBdetect, /* (I/O) encoder state */
+ const SKP_int16 samplesIn[], /* (I) input to encoder */
+ SKP_int nSamplesIn /* (I) length of input */
+)
+{
+ SKP_int HP_8_kHz_len, i;
+ SKP_int16 in_HP_8_kHz[ MAX_FRAME_LENGTH ];
+ SKP_int32 energy_32, shift;
+
+ /* High pass filter with cutoff at 8 khz */
+ HP_8_kHz_len = SKP_min_int( nSamplesIn, MAX_FRAME_LENGTH );
+ HP_8_kHz_len = SKP_max_int( HP_8_kHz_len, 0 );
+
+ /* Cutoff around 9 khz */
+ /* A = conv(conv([8192,14613, 6868], [8192,12883, 7337]), [8192,11586, 7911]); */
+ /* B = conv(conv([575, -948, 575], [575, -221, 575]), [575, 104, 575]); */
+ SKP_Silk_biquad( samplesIn, SKP_Silk_SWB_detect_B_HP_Q13[ 0 ], SKP_Silk_SWB_detect_A_HP_Q13[ 0 ],
+ psSWBdetect->S_HP_8_kHz[ 0 ], in_HP_8_kHz, HP_8_kHz_len );
+ for( i = 1; i < NB_SOS; i++ ) {
+ SKP_Silk_biquad( in_HP_8_kHz, SKP_Silk_SWB_detect_B_HP_Q13[ i ], SKP_Silk_SWB_detect_A_HP_Q13[ i ],
+ psSWBdetect->S_HP_8_kHz[ i ], in_HP_8_kHz, HP_8_kHz_len );
+ }
+
+ /* Calculate energy in HP signal */
+ SKP_Silk_sum_sqr_shift( &energy_32, &shift, in_HP_8_kHz, HP_8_kHz_len );
+
+ /* Count concecutive samples above threshold, after adjusting threshold for number of input samples and shift */
+ if( energy_32 > SKP_RSHIFT( SKP_SMULBB( HP_8_KHZ_THRES, HP_8_kHz_len ), shift ) ) {
+ psSWBdetect->ConsecSmplsAboveThres += nSamplesIn;
+ if( psSWBdetect->ConsecSmplsAboveThres > CONCEC_SWB_SMPLS_THRES ) {
+ psSWBdetect->SWB_detected = 1;
+ }
+ } else {
+ psSWBdetect->ConsecSmplsAboveThres -= nSamplesIn;
+ psSWBdetect->ConsecSmplsAboveThres = SKP_max( psSWBdetect->ConsecSmplsAboveThres, 0 );
+ }
+
+ /* If sufficient speech activity and no SWB detected, we detect the signal as being WB */
+ if( ( psSWBdetect->ActiveSpeech_ms > WB_DETECT_ACTIVE_SPEECH_MS_THRES ) && ( psSWBdetect->SWB_detected == 0 ) ) {
+ psSWBdetect->WB_detected = 1;
+ }
+}
--- /dev/null
+++ b/src/SKP_Silk_enc_API.c
@@ -1,0 +1,268 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+
+#include "SKP_Silk_define.h"
+#include "SKP_Silk_main_FIX.h"
+#include "SKP_Silk_SDK_API.h"
+#include "SKP_Silk_control.h"
+#include "SKP_Silk_typedef.h"
+#include "SKP_Silk_structs.h"
+#define SKP_Silk_EncodeControlStruct SKP_SILK_SDK_EncControlStruct
+
+/****************************************/
+/* Encoder functions */
+/****************************************/
+
+SKP_int SKP_Silk_SDK_Get_Encoder_Size( SKP_int *encSizeBytes )
+{
+ SKP_int ret = 0;
+
+ *encSizeBytes = sizeof( SKP_Silk_encoder_state_FIX );
+
+ return ret;
+}
+
+
+/***************************************/
+/* Read control structure from encoder */
+/***************************************/
+SKP_int SKP_Silk_SDK_QueryEncoder(
+ const void *encState, /* I: State Vector */
+ SKP_Silk_EncodeControlStruct *encStatus /* O: Control Structure */
+)
+{
+ SKP_Silk_encoder_state_FIX *psEnc;
+ SKP_int ret = 0;
+
+ psEnc = ( SKP_Silk_encoder_state_FIX* )encState;
+
+ encStatus->sampleRate = ( unsigned short )SKP_SMULBB( psEnc->sCmn.fs_kHz, 1000 ); /* convert kHz -> Hz */
+ encStatus->packetSize = ( unsigned short )SKP_SMULBB( psEnc->sCmn.fs_kHz, psEnc->sCmn.PacketSize_ms ); /* convert samples -> ms */
+ encStatus->bitRate = ( unsigned short )psEnc->sCmn.TargetRate_bps;
+ encStatus->packetLossPercentage = psEnc->sCmn.PacketLoss_perc;
+ encStatus->complexity = psEnc->sCmn.Complexity;
+
+ return ret;
+}
+
+/*************************/
+/* Init or Reset encoder */
+/*************************/
+SKP_int SKP_Silk_SDK_InitEncoder(
+ void *encState, /* I/O: State */
+ SKP_Silk_EncodeControlStruct *encStatus /* O: Control structure */
+)
+{
+ SKP_Silk_encoder_state_FIX *psEnc;
+ SKP_int ret = 0;
+
+
+ psEnc = ( SKP_Silk_encoder_state_FIX* )encState;
+
+ /* Reset Encoder */
+ if( ret += SKP_Silk_init_encoder_FIX( psEnc ) ) {
+ SKP_assert( 0 );
+ }
+
+ /* Read Control structure */
+ if( ret += SKP_Silk_SDK_QueryEncoder( encState, encStatus ) ) {
+ SKP_assert( 0 );
+ }
+
+
+ return ret;
+}
+
+/**************************/
+/* Encode frame with Silk */
+/**************************/
+SKP_int SKP_Silk_SDK_Encode(
+ void *encState, /* I/O: State */
+ const SKP_Silk_EncodeControlStruct *encControl, /* I: Control structure */
+ const SKP_int16 *samplesIn, /* I: Speech sample input vector */
+ SKP_int nSamplesIn, /* I: Number of samples in input vector */
+ SKP_uint8 *outData, /* O: Encoded output vector */
+ SKP_int16 *nBytesOut /* I/O: Number of bytes in outData (input: Max bytes) */
+)
+{
+ SKP_int API_fs_kHz, PacketSize_ms, PacketLoss_perc, UseInBandFec, UseDTX, ret = 0;
+ SKP_int nSamplesToBuffer, Complexity, input_ms, nSamplesFromInput = 0;
+ SKP_int32 TargetRate_bps;
+ SKP_int16 MaxBytesOut;
+ SKP_Silk_encoder_state_FIX *psEnc = ( SKP_Silk_encoder_state_FIX* )encState;
+
+
+ SKP_assert( encControl != NULL );
+
+ /* Check sampling frequency first, to avoid divide by zero later */
+ if( ( encControl->sampleRate != 8000 ) && ( encControl->sampleRate != 12000 ) &&
+ ( encControl->sampleRate != 16000 ) && ( encControl->sampleRate != 24000 ) ) {
+ ret = SKP_SILK_ENC_FS_NOT_SUPPORTED;
+ SKP_assert( 0 );
+ return( ret );
+ }
+
+ /* Set Encoder parameters from Control structure */
+ API_fs_kHz = SKP_DIV32_16( ( SKP_int )encControl->sampleRate, 1000 ); /* convert Hz -> kHz */
+ PacketSize_ms = SKP_DIV32_16( ( SKP_int )encControl->packetSize, API_fs_kHz ); /* convert samples -> ms */
+ TargetRate_bps = ( SKP_int32 )encControl->bitRate;
+ PacketLoss_perc = ( SKP_int )encControl->packetLossPercentage;
+ UseInBandFec = ( SKP_int )encControl->useInBandFEC;
+ Complexity = ( SKP_int )encControl->complexity;
+ UseDTX = ( SKP_int )encControl->useDTX;
+
+ /* Only accept input lengths that are multiplum of 10 ms */
+ input_ms = SKP_DIV32_16( nSamplesIn, API_fs_kHz );
+ if( ( input_ms % 10) != 0 || nSamplesIn < 0 ) {
+ ret = SKP_SILK_ENC_INPUT_INVALID_NO_OF_SAMPLES;
+ SKP_assert( 0 );
+ return( ret );
+ }
+
+ /* Make sure no more than one packet can be produced */
+ if( nSamplesIn > SKP_SMULBB( psEnc->sCmn.PacketSize_ms, API_fs_kHz ) ) {
+ ret = SKP_SILK_ENC_INPUT_INVALID_NO_OF_SAMPLES;
+ SKP_assert( 0 );
+ return( ret );
+ }
+
+ if( ( ret = SKP_Silk_control_encoder_FIX( psEnc, API_fs_kHz, PacketSize_ms, TargetRate_bps,
+ PacketLoss_perc, UseInBandFec, UseDTX, input_ms, Complexity ) ) != 0 ) {
+ SKP_assert( 0 );
+ return( ret );
+ }
+
+ /* Detect energy above 8 kHz */
+ if( encControl->sampleRate == 24000 && psEnc->sCmn.sSWBdetect.SWB_detected == 0 && psEnc->sCmn.sSWBdetect.WB_detected == 0 ) {
+ SKP_Silk_detect_SWB_input( &psEnc->sCmn.sSWBdetect, samplesIn, ( SKP_int )nSamplesIn );
+ }
+
+ /* Input buffering/resampling and encoding */
+ MaxBytesOut = 0; /* return 0 output bytes if no encoder called */
+ while( 1 ) {
+ /* Resample/buffer */
+ nSamplesToBuffer = psEnc->sCmn.frame_length - psEnc->sCmn.inputBufIx;
+ if( encControl->sampleRate == SKP_SMULBB( psEnc->sCmn.fs_kHz, 1000 ) ) {
+ /* Same sample frequency - copy the data */
+ nSamplesToBuffer = SKP_min_int( nSamplesToBuffer, nSamplesIn );
+ nSamplesFromInput = nSamplesToBuffer;
+ SKP_memcpy( &psEnc->sCmn.inputBuf[ psEnc->sCmn.inputBufIx ], samplesIn, SKP_SMULBB( nSamplesToBuffer, sizeof( SKP_int16 ) ) );
+ } else if( encControl->sampleRate == 24000 && psEnc->sCmn.fs_kHz == 16 ) {
+ /* Resample the data from 24 kHz to 16 kHz */
+ nSamplesToBuffer = SKP_min_int( nSamplesToBuffer, SKP_SMULWB( SKP_LSHIFT( nSamplesIn, 1 ), 21846 ) ); // 21846 = ceil(2/3)*2^15
+ nSamplesFromInput = SKP_RSHIFT( SKP_SMULBB( nSamplesToBuffer, 3 ), 1 );
+#if LOW_COMPLEXITY_ONLY
+ {
+ SKP_int16 scratch[ MAX_FRAME_LENGTH + SigProc_Resample_2_3_coarse_NUM_FIR_COEFS - 1 ];
+ SKP_assert( nSamplesFromInput <= MAX_FRAME_LENGTH );
+ SKP_Silk_resample_2_3_coarse( &psEnc->sCmn.inputBuf[ psEnc->sCmn.inputBufIx ], psEnc->sCmn.resample24To16state,
+ samplesIn, nSamplesFromInput, scratch );
+ }
+#else
+ SKP_Silk_resample_2_3( &psEnc->sCmn.inputBuf[ psEnc->sCmn.inputBufIx ], psEnc->sCmn.resample24To16state,
+ samplesIn, nSamplesFromInput );
+#endif
+ } else if( encControl->sampleRate == 24000 && psEnc->sCmn.fs_kHz == 12 ) {
+ SKP_int32 scratch[ 3 * MAX_FRAME_LENGTH ];
+ /* Resample the data from 24 kHz to 12 kHz */
+ nSamplesToBuffer = SKP_min_int( nSamplesToBuffer, SKP_RSHIFT( nSamplesIn, 1 ) );
+ nSamplesFromInput = SKP_LSHIFT16( nSamplesToBuffer, 1 );
+ SKP_Silk_resample_1_2_coarse( samplesIn, psEnc->sCmn.resample24To12state,
+ &psEnc->sCmn.inputBuf[ psEnc->sCmn.inputBufIx ], scratch, nSamplesToBuffer );
+ } else if( encControl->sampleRate == 24000 && psEnc->sCmn.fs_kHz == 8 ) {
+ /* Resample the data from 24 kHz to 8 kHz */
+ nSamplesToBuffer = SKP_min_int( nSamplesToBuffer, SKP_DIV32_16( nSamplesIn, 3 ) );
+ nSamplesFromInput = SKP_SMULBB( nSamplesToBuffer, 3 );
+ SKP_Silk_resample_1_3( &psEnc->sCmn.inputBuf[ psEnc->sCmn.inputBufIx ], psEnc->sCmn.resample24To8state,
+ samplesIn, nSamplesFromInput);
+ } else if( encControl->sampleRate == 16000 && psEnc->sCmn.fs_kHz == 12 ) {
+ /* Resample the data from 16 kHz to 12 kHz */
+ nSamplesToBuffer = SKP_min_int( nSamplesToBuffer, SKP_RSHIFT( SKP_SMULBB( nSamplesIn, 3 ), 2 ) );
+ nSamplesFromInput = SKP_SMULWB( SKP_LSHIFT16( nSamplesToBuffer, 2 ), 21846 ); // 21846 = ceil((1/3)*2^16)
+ SKP_Silk_resample_3_4( &psEnc->sCmn.inputBuf[ psEnc->sCmn.inputBufIx ], psEnc->sCmn.resample16To12state,
+ samplesIn, nSamplesFromInput );
+ } else if( encControl->sampleRate == 16000 && psEnc->sCmn.fs_kHz == 8 ) {
+ SKP_int32 scratch[ 3 * MAX_FRAME_LENGTH ];
+ /* Resample the data from 16 kHz to 8 kHz */
+ nSamplesToBuffer = SKP_min_int( nSamplesToBuffer, SKP_RSHIFT( nSamplesIn, 1 ) );
+ nSamplesFromInput = SKP_LSHIFT16( nSamplesToBuffer, 1 );
+ SKP_Silk_resample_1_2_coarse( samplesIn, psEnc->sCmn.resample16To8state,
+ &psEnc->sCmn.inputBuf[ psEnc->sCmn.inputBufIx ], scratch, nSamplesToBuffer );
+ } else if( encControl->sampleRate == 12000 && psEnc->sCmn.fs_kHz == 8 ) {
+ /* Resample the data from 12 kHz to 8 kHz */
+ nSamplesToBuffer = SKP_min_int( nSamplesToBuffer, SKP_SMULWB( SKP_LSHIFT( nSamplesIn, 1 ), 21846 ) );
+ nSamplesFromInput = SKP_RSHIFT( SKP_SMULBB( nSamplesToBuffer, 3 ), 1 );
+#if LOW_COMPLEXITY_ONLY
+ {
+ SKP_int16 scratch[ MAX_FRAME_LENGTH + SigProc_Resample_2_3_coarse_NUM_FIR_COEFS - 1 ];
+ SKP_assert( nSamplesFromInput <= MAX_FRAME_LENGTH );
+ SKP_Silk_resample_2_3_coarse( &psEnc->sCmn.inputBuf[ psEnc->sCmn.inputBufIx ], psEnc->sCmn.resample12To8state,
+ samplesIn, nSamplesFromInput, scratch );
+ }
+#else
+ SKP_Silk_resample_2_3( &psEnc->sCmn.inputBuf[ psEnc->sCmn.inputBufIx ], psEnc->sCmn.resample12To8state,
+ samplesIn, nSamplesFromInput );
+#endif
+ }
+ samplesIn += nSamplesFromInput;
+ nSamplesIn -= nSamplesFromInput;
+ psEnc->sCmn.inputBufIx += nSamplesToBuffer;
+
+ /* Silk encoder */
+ if( psEnc->sCmn.inputBufIx >= psEnc->sCmn.frame_length ) {
+ /* Enough data in input buffer, so encode */
+ if( MaxBytesOut == 0 ) {
+ /* No payload obtained so far */
+ MaxBytesOut = *nBytesOut;
+ if( ( ret = SKP_Silk_encode_frame_FIX( psEnc, outData, &MaxBytesOut, psEnc->sCmn.inputBuf ) ) != 0 ) {
+ SKP_assert( 0 );
+ }
+ } else {
+ /* outData already contains a payload */
+ if( ( ret = SKP_Silk_encode_frame_FIX( psEnc, outData, nBytesOut, psEnc->sCmn.inputBuf ) ) != 0 ) {
+ SKP_assert( 0 );
+ }
+ /* Check that no second payload was created */
+ SKP_assert( *nBytesOut == 0 );
+ }
+ psEnc->sCmn.inputBufIx = 0;
+ } else {
+ break;
+ }
+ }
+
+ *nBytesOut = MaxBytesOut;
+ if( psEnc->sCmn.useDTX && psEnc->sCmn.inDTX ) {
+ /* Dtx simulation */
+ *nBytesOut = 0;
+ }
+
+
+ return ret;
+}
+
--- /dev/null
+++ b/src/SKP_Silk_encode_frame_FIX.c
@@ -1,0 +1,432 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_main_FIX.h"
+/****************/
+/* Encode frame */
+/****************/
+SKP_int SKP_Silk_encode_frame_FIX(
+ SKP_Silk_encoder_state_FIX *psEnc, /* I/O Pointer to Silk FIX encoder state */
+ SKP_uint8 *pCode, /* O Pointer to payload */
+ SKP_int16 *pnBytesOut, /* I/O Pointer to number of payload bytes */
+ /* input: max length; output: used */
+ const SKP_int16 *pIn /* I Pointer to input speech frame */
+)
+{
+ SKP_Silk_encoder_control_FIX sEncCtrl;
+ SKP_int i, nBytes, ret = 0;
+ SKP_int16 *x_frame, *res_pitch_frame;
+ SKP_int16 xfw[ MAX_FRAME_LENGTH ];
+ SKP_int16 pIn_HP[ MAX_FRAME_LENGTH ];
+ SKP_int16 res_pitch[ 2 * MAX_FRAME_LENGTH + LA_PITCH_MAX ];
+ SKP_int LBRR_idx, frame_terminator, SNR_dB_Q7;
+ const SKP_uint16 *FrameTermination_CDF;
+
+ /* Low bitrate redundancy parameters */
+ SKP_uint8 LBRRpayload[ MAX_ARITHM_BYTES ];
+ SKP_int16 nBytesLBRR;
+
+ //SKP_int32 Seed[ MAX_LAYERS ];
+ sEncCtrl.sCmn.Seed = psEnc->sCmn.frameCounter++ & 3;
+
+
+ /**************************************************************/
+ /* Setup Input Pointers, and insert frame in input buffer */
+ /*************************************************************/
+ x_frame = psEnc->x_buf + psEnc->sCmn.frame_length; /* start of frame to encode */
+ res_pitch_frame = res_pitch + psEnc->sCmn.frame_length; /* start of pitch LPC residual frame */
+
+ /****************************/
+ /* Voice Activity Detection */
+ /****************************/
+ ret = SKP_Silk_VAD_GetSA_Q8( &psEnc->sCmn.sVAD, &psEnc->speech_activity_Q8, &SNR_dB_Q7,
+ sEncCtrl.input_quality_bands_Q15, &sEncCtrl.input_tilt_Q15,
+ pIn,psEnc->sCmn.frame_length );
+
+ /*******************************************/
+ /* High-pass filtering of the input signal */
+ /*******************************************/
+#if HIGH_PASS_INPUT
+ /* Variable high-pass filter */
+ SKP_Silk_HP_variable_cutoff_FIX( psEnc, &sEncCtrl, pIn_HP, pIn );
+#else
+ SKP_memcpy( pIn_HP, pIn,psEnc->sCmn.frame_length * sizeof( SKP_int16 ) );
+#endif
+
+#if SWITCH_TRANSITION_FILTERING
+ /* Ensure smooth bandwidth transitions */
+ SKP_Silk_LP_variable_cutoff( &psEnc->sCmn.sLP, x_frame + psEnc->sCmn.la_shape, pIn_HP, psEnc->sCmn.frame_length );
+#else
+ SKP_memcpy( x_frame + psEnc->sCmn.la_shape, pIn_HP,psEnc->sCmn.frame_length * sizeof( SKP_int16 ) );
+#endif
+
+ /*****************************************/
+ /* Find pitch lags, initial LPC analysis */
+ /*****************************************/
+ SKP_Silk_find_pitch_lags_FIX( psEnc, &sEncCtrl, res_pitch, x_frame );
+
+ /************************/
+ /* Noise shape analysis */
+ /************************/
+ SKP_Silk_noise_shape_analysis_FIX( psEnc, &sEncCtrl, res_pitch_frame, x_frame );
+
+ /*****************************************/
+ /* Prefiltering for noise shaper */
+ /*****************************************/
+ SKP_Silk_prefilter_FIX( psEnc, &sEncCtrl, xfw, x_frame );
+
+
+ /***************************************************/
+ /* Find linear prediction coefficients (LPC + LTP) */
+ /***************************************************/
+ SKP_Silk_find_pred_coefs_FIX( psEnc, &sEncCtrl, res_pitch );
+
+ /****************************************/
+ /* Process gains */
+ /****************************************/
+ SKP_Silk_process_gains_FIX( psEnc, &sEncCtrl );
+
+ psEnc->sCmn.sigtype[ psEnc->sCmn.nFramesInPayloadBuf ] = sEncCtrl.sCmn.sigtype;
+ psEnc->sCmn.QuantOffsetType[ psEnc->sCmn.nFramesInPayloadBuf ] = sEncCtrl.sCmn.QuantOffsetType;
+
+ /****************************************/
+ /* Low Bitrate Redundant Encoding */
+ /****************************************/
+ nBytesLBRR = MAX_ARITHM_BYTES;
+ SKP_Silk_LBRR_encode_FIX( psEnc, &sEncCtrl, LBRRpayload, &nBytesLBRR, xfw );
+
+ /*****************************************/
+ /* Noise shaping quantization */
+ /*****************************************/
+ psEnc->NoiseShapingQuantizer( &psEnc->sCmn, &sEncCtrl.sCmn, &psEnc->sNSQ, xfw,
+ &psEnc->sCmn.q[ psEnc->sCmn.nFramesInPayloadBuf *psEnc->sCmn.frame_length ], sEncCtrl.sCmn.NLSFInterpCoef_Q2,
+ sEncCtrl.PredCoef_Q12[ 0 ], sEncCtrl.LTPCoef_Q14, sEncCtrl.AR2_Q13, sEncCtrl.HarmShapeGain_Q14,
+ sEncCtrl.Tilt_Q14, sEncCtrl.LF_shp_Q14, sEncCtrl.Gains_Q16, sEncCtrl.Lambda_Q10,
+ sEncCtrl.LTP_scale_Q14 );
+
+ /**************************************************/
+ /* Convert speech activity into VAD and DTX flags */
+ /**************************************************/
+ if( psEnc->speech_activity_Q8 < SPEECH_ACTIVITY_DTX_THRES_Q8 ) {
+ psEnc->sCmn.vadFlag = NO_VOICE_ACTIVITY;
+ psEnc->sCmn.noSpeechCounter++;
+ if( psEnc->sCmn.noSpeechCounter > NO_SPEECH_FRAMES_BEFORE_DTX ) {
+ psEnc->sCmn.inDTX = 1;
+ }
+ if( psEnc->sCmn.noSpeechCounter > MAX_CONSECUTIVE_DTX ) {
+ psEnc->sCmn.noSpeechCounter = 0;
+ psEnc->sCmn.inDTX = 0;
+ }
+ } else {
+ psEnc->sCmn.noSpeechCounter = 0;
+ psEnc->sCmn.inDTX = 0;
+ psEnc->sCmn.vadFlag = VOICE_ACTIVITY;
+ }
+
+ /****************************************/
+ /* Initialize arithmetic coder */
+ /****************************************/
+ if( psEnc->sCmn.nFramesInPayloadBuf == 0 ) {
+ SKP_Silk_range_enc_init( &psEnc->sCmn.sRC );
+ psEnc->sCmn.nBytesInPayloadBuf = 0;
+ }
+
+ /****************************************/
+ /* Encode Parameters */
+ /****************************************/
+ if( psEnc->sCmn.bitstream_v == BIT_STREAM_V4 ) {
+ SKP_Silk_encode_parameters_v4( &psEnc->sCmn, &sEncCtrl.sCmn, &psEnc->sCmn.sRC );
+ FrameTermination_CDF = SKP_Silk_FrameTermination_v4_CDF;
+ } else {
+ SKP_Silk_encode_parameters( &psEnc->sCmn, &sEncCtrl.sCmn, &psEnc->sCmn.sRC,
+ &psEnc->sCmn.q[ psEnc->sCmn.nFramesInPayloadBuf *psEnc->sCmn.frame_length ] );
+ FrameTermination_CDF = SKP_Silk_FrameTermination_CDF;
+ }
+
+ /****************************************/
+ /* Update Buffers and State */
+ /****************************************/
+ /* Update Input buffer */
+ SKP_memmove( psEnc->x_buf, &psEnc->x_buf[ psEnc->sCmn.frame_length ], ( psEnc->sCmn.frame_length + psEnc->sCmn.la_shape ) * sizeof( SKP_int16 ) );
+
+ /* parameters needed for next frame */
+ psEnc->sCmn.prev_sigtype = sEncCtrl.sCmn.sigtype;
+ psEnc->sCmn.prevLag = sEncCtrl.sCmn.pitchL[ NB_SUBFR - 1];
+ psEnc->sCmn.first_frame_after_reset = 0;
+
+ if( psEnc->sCmn.sRC.error ) {
+ /* encoder returned error: clear payload buffer */
+ psEnc->sCmn.nFramesInPayloadBuf = 0;
+ } else {
+ psEnc->sCmn.nFramesInPayloadBuf++;
+ }
+
+ /****************************************/
+ /* finalize payload and copy to output */
+ /****************************************/
+ if( psEnc->sCmn.nFramesInPayloadBuf * FRAME_LENGTH_MS >= psEnc->sCmn.PacketSize_ms ) {
+
+ LBRR_idx = ( psEnc->sCmn.oldest_LBRR_idx + 1 ) & LBRR_IDX_MASK;
+
+ /* Check if FEC information should be added */
+ frame_terminator = SKP_SILK_LAST_FRAME;
+ if( psEnc->sCmn.LBRR_buffer[ LBRR_idx ].usage == SKP_SILK_ADD_LBRR_TO_PLUS1 ) {
+ frame_terminator = SKP_SILK_LBRR_VER1;
+ }
+ if( psEnc->sCmn.LBRR_buffer[ psEnc->sCmn.oldest_LBRR_idx ].usage == SKP_SILK_ADD_LBRR_TO_PLUS2 ) {
+ frame_terminator = SKP_SILK_LBRR_VER2;
+ LBRR_idx = psEnc->sCmn.oldest_LBRR_idx;
+ }
+ /* Add the frame termination info to stream */
+ SKP_Silk_range_encoder( &psEnc->sCmn.sRC, frame_terminator, FrameTermination_CDF );
+
+ if( psEnc->sCmn.bitstream_v == BIT_STREAM_V4 ) {
+ /* Code excitation signal */
+ for( i = 0; i <psEnc->sCmn.nFramesInPayloadBuf; i++ ) {
+ SKP_Silk_encode_pulses( &psEnc->sCmn.sRC, psEnc->sCmn.sigtype[ i ],psEnc->sCmn.QuantOffsetType[ i ],
+ &psEnc->sCmn.q[ i * psEnc->sCmn.frame_length],psEnc->sCmn.frame_length );
+ }
+ }
+ /* payload length so far */
+ SKP_Silk_range_coder_get_length( &psEnc->sCmn.sRC, &nBytes );
+
+ /* check that there is enough space in external output buffer, and move data */
+ if( *pnBytesOut >= nBytes ) {
+ SKP_Silk_range_enc_wrap_up( &psEnc->sCmn.sRC );
+ SKP_memcpy( pCode, psEnc->sCmn.sRC.buffer, nBytes * sizeof( SKP_uint8 ) );
+
+ if( frame_terminator > SKP_SILK_MORE_FRAMES &&
+ *pnBytesOut >= nBytes + psEnc->sCmn.LBRR_buffer[ LBRR_idx ].nBytes ) {
+ /* Get old packet and add to payload. */
+ SKP_memcpy( &pCode[ nBytes ],
+ psEnc->sCmn.LBRR_buffer[ LBRR_idx ].payload,
+ psEnc->sCmn.LBRR_buffer[ LBRR_idx ].nBytes * sizeof( SKP_uint8 ) );
+ nBytes += psEnc->sCmn.LBRR_buffer[ LBRR_idx ].nBytes;
+ }
+
+ *pnBytesOut = nBytes;
+
+ /* Update FEC buffer */
+ SKP_memcpy( psEnc->sCmn.LBRR_buffer[ psEnc->sCmn.oldest_LBRR_idx ].payload, LBRRpayload,
+ nBytesLBRR * sizeof( SKP_uint8 ) );
+ psEnc->sCmn.LBRR_buffer[ psEnc->sCmn.oldest_LBRR_idx ].nBytes = nBytesLBRR;
+ /* This line tells describes how FEC should be used */
+ psEnc->sCmn.LBRR_buffer[ psEnc->sCmn.oldest_LBRR_idx ].usage = sEncCtrl.sCmn.LBRR_usage;
+ psEnc->sCmn.oldest_LBRR_idx = ( psEnc->sCmn.oldest_LBRR_idx + 1 ) & LBRR_IDX_MASK;
+
+ /* Reset number of frames in payload buffer */
+ psEnc->sCmn.nFramesInPayloadBuf = 0;
+ } else {
+ /* Not enough space: Payload will be discarded */
+ *pnBytesOut = 0;
+ nBytes = 0;
+ psEnc->sCmn.nFramesInPayloadBuf = 0;
+ ret = SKP_SILK_ENC_PAYLOAD_BUF_TOO_SHORT;
+ }
+ } else {
+ /* no payload for you this time */
+ *pnBytesOut = 0;
+
+ /* Encode that more frames follows */
+ frame_terminator = SKP_SILK_MORE_FRAMES;
+ SKP_Silk_range_encoder( &psEnc->sCmn.sRC, frame_terminator, FrameTermination_CDF );
+
+ /* payload length so far */
+ SKP_Silk_range_coder_get_length( &psEnc->sCmn.sRC, &nBytes );
+
+ if( psEnc->sCmn.bitstream_v == BIT_STREAM_V4 ) {
+ /* Take into account the q signal that isnt in the bitstream yet */
+ nBytes += SKP_Silk_pulses_to_bytes( &psEnc->sCmn,
+ &psEnc->sCmn.q[ (psEnc->sCmn.nFramesInPayloadBuf - 1) * psEnc->sCmn.frame_length ] );
+ }
+ }
+
+ /* Check for arithmetic coder errors */
+ if( psEnc->sCmn.sRC.error ) {
+ ret = SKP_SILK_ENC_INTERNAL_ERROR;
+ }
+
+ /* simulate number of ms buffered in channel because of exceeding TargetRate */
+ SKP_assert( ( 8 * 1000 * ( (SKP_int64)nBytes - (SKP_int64)psEnc->sCmn.nBytesInPayloadBuf ) ) ==
+ SKP_SAT32( 8 * 1000 * ( (SKP_int64)nBytes - (SKP_int64)psEnc->sCmn.nBytesInPayloadBuf ) ) );
+ SKP_assert( psEnc->sCmn.TargetRate_bps > 0 );
+ psEnc->BufferedInChannel_ms += SKP_DIV32( 8 * 1000 * ( nBytes -psEnc->sCmn.nBytesInPayloadBuf ),psEnc->sCmn.TargetRate_bps );
+ psEnc->BufferedInChannel_ms -= FRAME_LENGTH_MS;
+ psEnc->BufferedInChannel_ms = SKP_LIMIT( psEnc->BufferedInChannel_ms, 0, 100 );
+ psEnc->sCmn.nBytesInPayloadBuf = nBytes;
+
+ if( psEnc->speech_activity_Q8 > WB_DETECT_ACTIVE_SPEECH_LEVEL_THRES_Q8 ) {
+ psEnc->sCmn.sSWBdetect.ActiveSpeech_ms = SKP_ADD_POS_SAT32( psEnc->sCmn.sSWBdetect.ActiveSpeech_ms, FRAME_LENGTH_MS );
+ }
+
+
+ return( ret );
+}
+
+/* Low BitRate Redundancy encoding functionality. Reuse all parameters but encode residual with lower bitrate */
+void SKP_Silk_LBRR_encode_FIX(
+ SKP_Silk_encoder_state_FIX *psEnc, /* I/O Pointer to Silk encoder state */
+ SKP_Silk_encoder_control_FIX *psEncCtrl, /* I/O Pointer to Silk encoder control struct */
+ SKP_uint8 *pCode, /* O Pointer to payload */
+ SKP_int16 *pnBytesOut, /* I/O Pointer to number of payload bytes */
+ SKP_int16 xfw[] /* I Input signal */
+)
+{
+ SKP_int i, TempGainsIndices[ NB_SUBFR ], frame_terminator;
+ SKP_int nBytes, nFramesInPayloadBuf;
+ SKP_int32 TempGains_Q16[ NB_SUBFR ];
+ SKP_int typeOffset, LTP_scaleIndex, Rate_only_parameters = 0;
+ /*******************************************/
+ /* Control use of inband LBRR */
+ /*******************************************/
+ SKP_Silk_LBRR_ctrl_FIX( psEnc, psEncCtrl );
+
+ if( psEnc->sCmn.LBRR_enabled ) {
+ /* Save original Gains */
+ SKP_memcpy( TempGainsIndices, psEncCtrl->sCmn.GainsIndices, NB_SUBFR * sizeof( SKP_int ) );
+ SKP_memcpy( TempGains_Q16, psEncCtrl->Gains_Q16, NB_SUBFR * sizeof( SKP_int32 ) );
+
+ typeOffset = psEnc->sCmn.typeOffsetPrev; // Temp save as cannot be overwritten
+ LTP_scaleIndex = psEncCtrl->sCmn.LTP_scaleIndex;
+
+ /* Set max rate where quant signal is encoded */
+ if( psEnc->sCmn.fs_kHz == 8 ) {
+ Rate_only_parameters = 13500;
+ } else if( psEnc->sCmn.fs_kHz == 12 ) {
+ Rate_only_parameters = 15500;
+ } else if( psEnc->sCmn.fs_kHz == 16 ) {
+ Rate_only_parameters = 17500;
+ } else if( psEnc->sCmn.fs_kHz == 24 ) {
+ Rate_only_parameters = 19500;
+ } else {
+ SKP_assert( 0 );
+ }
+
+ if( psEnc->sCmn.Complexity > 0 && psEnc->sCmn.TargetRate_bps > Rate_only_parameters ) {
+ if( psEnc->sCmn.nFramesInPayloadBuf == 0 ) {
+ /* First frame in packet copy Everything */
+ SKP_memcpy( &psEnc->sNSQ_LBRR, &psEnc->sNSQ, sizeof( SKP_Silk_nsq_state ) );
+
+ psEnc->sCmn.LBRRprevLastGainIndex = psEnc->sShape.LastGainIndex;
+ /* Increase Gains to get target LBRR rate */
+ psEncCtrl->sCmn.GainsIndices[ 0 ] = psEncCtrl->sCmn.GainsIndices[ 0 ] + psEnc->sCmn.LBRR_GainIncreases;
+ psEncCtrl->sCmn.GainsIndices[ 0 ] = SKP_LIMIT( psEncCtrl->sCmn.GainsIndices[ 0 ], 0, N_LEVELS_QGAIN - 1 );
+ }
+ /* Decode to get Gains in sync with decoder */
+ /* Overwrite unquantized gains with quantized gains */
+ SKP_Silk_gains_dequant( psEncCtrl->Gains_Q16, psEncCtrl->sCmn.GainsIndices,
+ &psEnc->sCmn.LBRRprevLastGainIndex, psEnc->sCmn.nFramesInPayloadBuf );
+ /*****************************************/
+ /* Noise shaping quantization */
+ /*****************************************/
+ psEnc->NoiseShapingQuantizer( &psEnc->sCmn, &psEncCtrl->sCmn,
+ &psEnc->sNSQ_LBRR, xfw, &psEnc->sCmn.q_LBRR[ psEnc->sCmn.nFramesInPayloadBuf * psEnc->sCmn.frame_length ],
+ psEncCtrl->sCmn.NLSFInterpCoef_Q2, psEncCtrl->PredCoef_Q12[ 0 ], psEncCtrl->LTPCoef_Q14,
+ psEncCtrl->AR2_Q13, psEncCtrl->HarmShapeGain_Q14, psEncCtrl->Tilt_Q14, psEncCtrl->LF_shp_Q14,
+ psEncCtrl->Gains_Q16, psEncCtrl->Lambda_Q10, psEncCtrl->LTP_scale_Q14 );
+ } else {
+ SKP_memset( &psEnc->sCmn.q_LBRR[ psEnc->sCmn.nFramesInPayloadBuf *psEnc->sCmn.frame_length ], 0,
+ psEnc->sCmn.frame_length * sizeof( SKP_int ) );
+ psEncCtrl->sCmn.LTP_scaleIndex = 0;
+ }
+ /****************************************/
+ /* Initialize arithmetic coder */
+ /****************************************/
+ if( psEnc->sCmn.nFramesInPayloadBuf == 0 ) {
+ SKP_Silk_range_enc_init( &psEnc->sCmn.sRC_LBRR );
+ psEnc->sCmn.nBytesInPayloadBuf = 0;
+ }
+
+ /****************************************/
+ /* Encode Parameters */
+ /****************************************/
+ if( psEnc->sCmn.bitstream_v == BIT_STREAM_V4 ) {
+ SKP_Silk_encode_parameters_v4( &psEnc->sCmn, &psEncCtrl->sCmn, &psEnc->sCmn.sRC_LBRR );
+ } else {
+ SKP_Silk_encode_parameters( &psEnc->sCmn, &psEncCtrl->sCmn, &psEnc->sCmn.sRC_LBRR,
+ &psEnc->sCmn.q_LBRR[ psEnc->sCmn.nFramesInPayloadBuf * psEnc->sCmn.frame_length] );
+ }
+
+ if( psEnc->sCmn.sRC_LBRR.error ) {
+ /* encoder returned error: clear payload buffer */
+ nFramesInPayloadBuf = 0;
+ } else {
+ nFramesInPayloadBuf = psEnc->sCmn.nFramesInPayloadBuf + 1;
+ }
+
+ /****************************************/
+ /* finalize payload and copy to output */
+ /****************************************/
+ if( SKP_SMULBB( nFramesInPayloadBuf, FRAME_LENGTH_MS ) >= psEnc->sCmn.PacketSize_ms ) {
+
+ /* Check if FEC information should be added */
+ frame_terminator = SKP_SILK_LAST_FRAME;
+
+ /* Add the frame termination info to stream */
+ SKP_Silk_range_encoder( &psEnc->sCmn.sRC_LBRR, frame_terminator, SKP_Silk_FrameTermination_CDF );
+
+ if( psEnc->sCmn.bitstream_v == BIT_STREAM_V4 ) {
+ /*********************************************/
+ /* Encode quantization indices of excitation */
+ /*********************************************/
+ for( i = 0; i < nFramesInPayloadBuf; i++ ) {
+ SKP_Silk_encode_pulses( &psEnc->sCmn.sRC_LBRR, psEnc->sCmn.sigtype[ i ], psEnc->sCmn.QuantOffsetType[ i ],
+ &psEnc->sCmn.q_LBRR[ i * psEnc->sCmn.frame_length ], psEnc->sCmn.frame_length );
+ }
+ }
+ /* payload length so far */
+ SKP_Silk_range_coder_get_length( &psEnc->sCmn.sRC_LBRR, &nBytes );
+
+ /* check that there is enough space in external output buffer, and move data */
+ if( *pnBytesOut >= nBytes ) {
+ SKP_Silk_range_enc_wrap_up( &psEnc->sCmn.sRC_LBRR );
+ SKP_memcpy( pCode, psEnc->sCmn.sRC_LBRR.buffer, nBytes * sizeof( SKP_uint8 ) );
+
+ *pnBytesOut = nBytes;
+ } else {
+ /* not enough space: payload will be discarded */
+ *pnBytesOut = 0;
+ SKP_assert( 0 );
+ }
+ } else {
+ /* no payload for you this time */
+ *pnBytesOut = 0;
+
+ /* Encode that more frames follows */
+ frame_terminator = SKP_SILK_MORE_FRAMES;
+ SKP_Silk_range_encoder( &psEnc->sCmn.sRC_LBRR, frame_terminator, SKP_Silk_FrameTermination_CDF );
+ }
+
+ /* Restore original Gains */
+ SKP_memcpy( psEncCtrl->sCmn.GainsIndices, TempGainsIndices, NB_SUBFR * sizeof( SKP_int ) );
+ SKP_memcpy( psEncCtrl->Gains_Q16, TempGains_Q16, NB_SUBFR * sizeof( SKP_int32 ) );
+
+ /* Restore LTP scale index and typeoffset */
+ psEncCtrl->sCmn.LTP_scaleIndex = LTP_scaleIndex;
+ psEnc->sCmn.typeOffsetPrev = typeOffset;
+ }
+}
--- /dev/null
+++ b/src/SKP_Silk_encode_parameters.c
@@ -1,0 +1,167 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_main.h"
+
+/*******************************************/
+/* Encode parameters to create the payload */
+/*******************************************/
+void SKP_Silk_encode_parameters(
+ SKP_Silk_encoder_state *psEncC, /* I/O Encoder state */
+ SKP_Silk_encoder_control *psEncCtrlC, /* I/O Encoder control */
+ SKP_Silk_range_coder_state *psRC, /* I/O Range encoder state */
+ const SKP_int *q /* I Quantization indices */
+)
+{
+ SKP_int i, k, typeOffset;
+ const SKP_Silk_NLSF_CB_struct *psNLSF_CB;
+
+
+ /************************/
+ /* Encode sampling rate */
+ /************************/
+ /* only done for first frame in packet */
+ if( psEncC->nFramesInPayloadBuf == 0 ) {
+
+ /* Initialize arithmetic coder */
+ SKP_Silk_range_enc_init( &psEncC->sRC );
+ psEncC->nBytesInPayloadBuf = 0;
+
+ /* get sampling rate index */
+ for( i = 0; i < 3; i++ ) {
+ if( SKP_Silk_SamplingRates_table[ i ] == psEncC->fs_kHz ) {
+ break;
+ }
+ }
+ SKP_Silk_range_encoder( psRC, i, SKP_Silk_SamplingRates_CDF );
+ }
+
+ /*******************************************/
+ /* Encode signal type and quantizer offset */
+ /*******************************************/
+ typeOffset = 2 * psEncCtrlC->sigtype + psEncCtrlC->QuantOffsetType;
+ if( psEncC->nFramesInPayloadBuf == 0 ) {
+ /* first frame in packet: independent coding */
+ SKP_Silk_range_encoder( psRC, typeOffset, SKP_Silk_type_offset_CDF );
+ } else {
+ /* condidtional coding */
+ SKP_Silk_range_encoder( psRC, typeOffset, SKP_Silk_type_offset_joint_CDF[ psEncC->typeOffsetPrev ] );
+ }
+ psEncC->typeOffsetPrev = typeOffset;
+
+ /****************/
+ /* Encode gains */
+ /****************/
+ /* first subframe */
+ if( psEncC->nFramesInPayloadBuf == 0 ) {
+ /* first frame in packet: independent coding */
+ SKP_Silk_range_encoder( psRC, psEncCtrlC->GainsIndices[ 0 ], SKP_Silk_gain_CDF[ psEncCtrlC->sigtype ] );
+ } else {
+ /* condidtional coding */
+ SKP_Silk_range_encoder( psRC, psEncCtrlC->GainsIndices[ 0 ], SKP_Silk_delta_gain_CDF );
+ }
+
+ /* remaining subframes */
+ for( i = 1; i < NB_SUBFR; i++ ) {
+ SKP_Silk_range_encoder( psRC, psEncCtrlC->GainsIndices[ i ], SKP_Silk_delta_gain_CDF );
+ }
+
+
+ /****************/
+ /* Encode NLSFs */
+ /****************/
+ /* Range encoding of the NLSF path */
+ psNLSF_CB = psEncC->psNLSF_CB[ psEncCtrlC->sigtype ];
+ SKP_Silk_range_encoder_multi( psRC, psEncCtrlC->NLSFIndices, psNLSF_CB->StartPtr, psNLSF_CB->nStages );
+
+ /* Encode NLSF interpolation factor */
+ SKP_assert( psEncC->useInterpolatedNLSFs == 1 || psEncCtrlC->NLSFInterpCoef_Q2 == ( 1 << 2 ) );
+ SKP_Silk_range_encoder( psRC, psEncCtrlC->NLSFInterpCoef_Q2, SKP_Silk_NLSF_interpolation_factor_CDF );
+
+
+ if( psEncCtrlC->sigtype == SIG_TYPE_VOICED ) {
+ /*********************/
+ /* Encode pitch lags */
+ /*********************/
+
+
+ /* lag index */
+ if( psEncC->fs_kHz == 8 ) {
+ SKP_Silk_range_encoder( psRC, psEncCtrlC->lagIndex, SKP_Silk_pitch_lag_NB_CDF );
+ } else if( psEncC->fs_kHz == 12 ) {
+ SKP_Silk_range_encoder( psRC, psEncCtrlC->lagIndex, SKP_Silk_pitch_lag_MB_CDF );
+ } else if( psEncC->fs_kHz == 16 ) {
+ SKP_Silk_range_encoder( psRC, psEncCtrlC->lagIndex, SKP_Silk_pitch_lag_WB_CDF );
+ } else {
+ SKP_Silk_range_encoder( psRC, psEncCtrlC->lagIndex, SKP_Silk_pitch_lag_SWB_CDF );
+ }
+
+
+ /* countour index */
+ if( psEncC->fs_kHz == 8 ) {
+ /* Less codevectors used in 8 khz mode */
+ SKP_Silk_range_encoder( psRC, psEncCtrlC->contourIndex, SKP_Silk_pitch_contour_NB_CDF );
+ } else {
+ /* Joint for 12, 16, 24 khz */
+ SKP_Silk_range_encoder( psRC, psEncCtrlC->contourIndex, SKP_Silk_pitch_contour_CDF );
+ }
+
+ /********************/
+ /* Encode LTP gains */
+ /********************/
+
+ /* PERIndex value */
+ SKP_Silk_range_encoder( psRC, psEncCtrlC->PERIndex, SKP_Silk_LTP_per_index_CDF );
+
+ /* Codebook Indices */
+ for( k = 0; k < NB_SUBFR; k++ ) {
+ SKP_Silk_range_encoder( psRC, psEncCtrlC->LTPIndex[ k ], SKP_Silk_LTP_gain_CDF_ptrs[ psEncCtrlC->PERIndex ] );
+ }
+
+ /**********************/
+ /* Encode LTP scaling */
+ /**********************/
+ SKP_Silk_range_encoder( psRC, psEncCtrlC->LTP_scaleIndex, SKP_Silk_LTPscale_CDF );
+ }
+
+
+ /***************/
+ /* Encode seed */
+ /***************/
+ SKP_Silk_range_encoder( psRC, psEncCtrlC->Seed, SKP_Silk_Seed_CDF );
+
+ /*********************************************/
+ /* Encode quantization indices of excitation */
+ /*********************************************/
+ SKP_Silk_encode_pulses( psRC, psEncCtrlC->sigtype, psEncCtrlC->QuantOffsetType, q, psEncC->frame_length );
+
+
+ /*********************************************/
+ /* Encode VAD flag */
+ /*********************************************/
+ SKP_Silk_range_encoder( psRC, psEncC->vadFlag, SKP_Silk_vadflag_CDF );
+}
--- /dev/null
+++ b/src/SKP_Silk_encode_parameters_v4.c
@@ -1,0 +1,179 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_main.h"
+
+/*******************************************/
+/* Encode parameters to create the payload */
+/*******************************************/
+void SKP_Silk_encode_parameters_v4(
+ SKP_Silk_encoder_state *psEncC, /* I/O Encoder state */
+ SKP_Silk_encoder_control *psEncCtrlC, /* I/O Encoder control */
+ SKP_Silk_range_coder_state *psRC /* I/O Range encoder state */
+)
+{
+ SKP_int i, k, typeOffset;
+ SKP_int encode_absolute_lagIndex, delta_lagIndex;
+ const SKP_Silk_NLSF_CB_struct *psNLSF_CB;
+
+
+ /************************/
+ /* Encode sampling rate */
+ /************************/
+ /* only done for first frame in packet */
+ if( psEncC->nFramesInPayloadBuf == 0 ) {
+
+ /* Initialize arithmetic coder */
+ SKP_Silk_range_enc_init( &psEncC->sRC );
+ psEncC->nBytesInPayloadBuf = 0;
+
+ /* get sampling rate index */
+ for( i = 0; i < 3; i++ ) {
+ if( SKP_Silk_SamplingRates_table[ i ] == psEncC->fs_kHz ) {
+ break;
+ }
+ }
+ SKP_Silk_range_encoder( psRC, i, SKP_Silk_SamplingRates_CDF );
+ }
+
+ /*********************************************/
+ /* Encode VAD flag */
+ /*********************************************/
+ SKP_Silk_range_encoder( psRC, psEncC->vadFlag, SKP_Silk_vadflag_CDF );
+
+ /*******************************************/
+ /* Encode signal type and quantizer offset */
+ /*******************************************/
+ typeOffset = 2 * psEncCtrlC->sigtype + psEncCtrlC->QuantOffsetType;
+ if( psEncC->nFramesInPayloadBuf == 0 ) {
+ /* first frame in packet: independent coding */
+ SKP_Silk_range_encoder( psRC, typeOffset, SKP_Silk_type_offset_CDF );
+ } else {
+ /* condidtional coding */
+ SKP_Silk_range_encoder( psRC, typeOffset, SKP_Silk_type_offset_joint_CDF[ psEncC->typeOffsetPrev ] );
+ }
+ psEncC->typeOffsetPrev = typeOffset;
+
+ /****************/
+ /* Encode gains */
+ /****************/
+ /* first subframe */
+ if( psEncC->nFramesInPayloadBuf == 0 ) {
+ /* first frame in packet: independent coding */
+ SKP_Silk_range_encoder( psRC, psEncCtrlC->GainsIndices[ 0 ], SKP_Silk_gain_CDF[ psEncCtrlC->sigtype ] );
+ } else {
+ /* condidtional coding */
+ SKP_Silk_range_encoder( psRC, psEncCtrlC->GainsIndices[ 0 ], SKP_Silk_delta_gain_CDF );
+ }
+
+ /* remaining subframes */
+ for( i = 1; i < NB_SUBFR; i++ ) {
+ SKP_Silk_range_encoder( psRC, psEncCtrlC->GainsIndices[ i ], SKP_Silk_delta_gain_CDF );
+ }
+
+
+ /****************/
+ /* Encode NLSFs */
+ /****************/
+ /* Range encoding of the NLSF path */
+ psNLSF_CB = psEncC->psNLSF_CB[ psEncCtrlC->sigtype ];
+ SKP_Silk_range_encoder_multi( psRC, psEncCtrlC->NLSFIndices, psNLSF_CB->StartPtr, psNLSF_CB->nStages );
+
+ /* Encode NLSF interpolation factor */
+ SKP_assert( psEncC->useInterpolatedNLSFs == 1 || psEncCtrlC->NLSFInterpCoef_Q2 == ( 1 << 2 ) );
+ SKP_Silk_range_encoder( psRC, psEncCtrlC->NLSFInterpCoef_Q2, SKP_Silk_NLSF_interpolation_factor_CDF );
+
+
+ if( psEncCtrlC->sigtype == SIG_TYPE_VOICED ) {
+ /*********************/
+ /* Encode pitch lags */
+ /*********************/
+
+
+ /* lag index */
+ encode_absolute_lagIndex = 1;
+ if( psEncC->nFramesInPayloadBuf > 0 && psEncC->prev_sigtype == SIG_TYPE_VOICED ) {
+ /* Delta Encoding */
+ delta_lagIndex = psEncCtrlC->lagIndex - psEncC->prev_lagIndex;
+ if( delta_lagIndex > MAX_DELTA_LAG ) {
+ delta_lagIndex = ( MAX_DELTA_LAG << 1 ) + 1;
+ } else if ( delta_lagIndex < -MAX_DELTA_LAG ) {
+ delta_lagIndex = ( MAX_DELTA_LAG << 1 ) + 1;
+ } else {
+ delta_lagIndex = delta_lagIndex + MAX_DELTA_LAG;
+ encode_absolute_lagIndex = 0; /* Only use delta */
+ }
+ SKP_Silk_range_encoder( psRC, delta_lagIndex, SKP_Silk_pitch_delta_CDF );
+ }
+ if( encode_absolute_lagIndex ) {
+ /* Absolute encoding */
+ if( psEncC->fs_kHz == 8 ) {
+ SKP_Silk_range_encoder( psRC, psEncCtrlC->lagIndex, SKP_Silk_pitch_lag_NB_CDF );
+ } else if( psEncC->fs_kHz == 12 ) {
+ SKP_Silk_range_encoder( psRC, psEncCtrlC->lagIndex, SKP_Silk_pitch_lag_MB_CDF );
+ } else if( psEncC->fs_kHz == 16 ) {
+ SKP_Silk_range_encoder( psRC, psEncCtrlC->lagIndex, SKP_Silk_pitch_lag_WB_CDF );
+ } else {
+ SKP_Silk_range_encoder( psRC, psEncCtrlC->lagIndex, SKP_Silk_pitch_lag_SWB_CDF );
+ }
+ }
+ psEncC->prev_lagIndex = psEncCtrlC->lagIndex;
+
+
+ /* countour index */
+ if( psEncC->fs_kHz == 8 ) {
+ /* Less codevectors used in 8 khz mode */
+ SKP_Silk_range_encoder( psRC, psEncCtrlC->contourIndex, SKP_Silk_pitch_contour_NB_CDF );
+ } else {
+ /* Joint for 12, 16, 24 khz */
+ SKP_Silk_range_encoder( psRC, psEncCtrlC->contourIndex, SKP_Silk_pitch_contour_CDF );
+ }
+
+ /********************/
+ /* Encode LTP gains */
+ /********************/
+
+ /* PERIndex value */
+ SKP_Silk_range_encoder( psRC, psEncCtrlC->PERIndex, SKP_Silk_LTP_per_index_CDF );
+
+ /* Codebook Indices */
+ for( k = 0; k < NB_SUBFR; k++ ) {
+ SKP_Silk_range_encoder( psRC, psEncCtrlC->LTPIndex[ k ], SKP_Silk_LTP_gain_CDF_ptrs[ psEncCtrlC->PERIndex ] );
+ }
+
+ /**********************/
+ /* Encode LTP scaling */
+ /**********************/
+ SKP_Silk_range_encoder( psRC, psEncCtrlC->LTP_scaleIndex, SKP_Silk_LTPscale_CDF );
+ }
+
+
+ /***************/
+ /* Encode seed */
+ /***************/
+ SKP_Silk_range_encoder( psRC, psEncCtrlC->Seed, SKP_Silk_Seed_CDF );
+}
--- /dev/null
+++ b/src/SKP_Silk_encode_pulses.c
@@ -1,0 +1,195 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_main.h"
+
+/*********************************************/
+/* Encode quantization indices of excitation */
+/*********************************************/
+
+SKP_INLINE SKP_int combine_and_check( /* return ok */
+ SKP_int *pulses_comb, /* O */
+ const SKP_int *pulses_in, /* I */
+ SKP_int max_pulses, /* I max value for sum of pulses */
+ SKP_int len /* I number of output values */
+)
+{
+ SKP_int k, sum;
+
+ for( k = 0; k < len; k++ ) {
+ sum = pulses_in[ 2 * k ] + pulses_in[ 2 * k + 1 ];
+ if( sum > max_pulses ) {
+ return 1;
+ }
+ pulses_comb[ k ] = sum;
+ }
+
+ return 0;
+}
+
+/* Encode quantization indices of excitation */
+void SKP_Silk_encode_pulses(
+ SKP_Silk_range_coder_state *psRC, /* I/O Range coder state */
+ const SKP_int sigtype, /* I Sigtype */
+ const SKP_int QuantOffsetType,/* I QuantOffsetType */
+ const SKP_int q[], /* I quantization indices */
+ const SKP_int frame_length /* I Frame length */
+)
+{
+ SKP_int i, k, j, iter, bit, nLS, scale_down, RateLevelIndex = 0;
+ SKP_int32 abs_q, minSumBits_Q6, sumBits_Q6;
+ SKP_int abs_pulses[ MAX_FRAME_LENGTH ];
+ SKP_int sum_pulses[ MAX_NB_SHELL_BLOCKS ];
+ SKP_int nRshifts[ MAX_NB_SHELL_BLOCKS ];
+ SKP_int pulses_comb[ 8 ];
+ SKP_int *abs_pulses_ptr;
+ const SKP_int *pulses_ptr;
+ const SKP_uint16 *cdf_ptr;
+ const SKP_int16 *nBits_ptr;
+
+ SKP_memset( pulses_comb, 0, 8 * sizeof( SKP_int ) ); // Fixing Valgrind reported problem
+
+ /****************************/
+ /* Prepare for shell coding */
+ /****************************/
+ /* Calculate number of shell blocks */
+ iter = frame_length / SHELL_CODEC_FRAME_LENGTH;
+
+ /* Take the absolute value of the pulses */
+ for( i = 0; i < frame_length; i+=4 ) {
+ abs_pulses[i+0] = ( SKP_int )SKP_abs( q[ i + 0 ] );
+ abs_pulses[i+1] = ( SKP_int )SKP_abs( q[ i + 1 ] );
+ abs_pulses[i+2] = ( SKP_int )SKP_abs( q[ i + 2 ] );
+ abs_pulses[i+3] = ( SKP_int )SKP_abs( q[ i + 3 ] );
+ }
+
+ /* Calc sum pulses per shell code frame */
+ abs_pulses_ptr = abs_pulses;
+ for( i = 0; i < iter; i++ ) {
+ nRshifts[ i ] = 0;
+
+ while( 1 ) {
+ /* 1+1 -> 2 */
+ scale_down = combine_and_check( pulses_comb, abs_pulses_ptr, SKP_Silk_max_pulses_table[ 0 ], 8 );
+
+ /* 2+2 -> 4 */
+ scale_down += combine_and_check( pulses_comb, pulses_comb, SKP_Silk_max_pulses_table[ 1 ], 4 );
+
+ /* 4+4 -> 8 */
+ scale_down += combine_and_check( pulses_comb, pulses_comb, SKP_Silk_max_pulses_table[ 2 ], 2 );
+
+ /* 8+8 -> 16 */
+ sum_pulses[ i ] = pulses_comb[ 0 ] + pulses_comb[ 1 ];
+ if( sum_pulses[ i ] > SKP_Silk_max_pulses_table[ 3 ] ) {
+ scale_down++;
+ }
+
+ if( scale_down ) {
+ /* We need to down scale the quantization signal */
+ nRshifts[ i ]++;
+ for( k = 0; k < SHELL_CODEC_FRAME_LENGTH; k++ ) {
+ abs_pulses_ptr[ k ] = SKP_RSHIFT( abs_pulses_ptr[ k ], 1 );
+ }
+ } else {
+ /* Jump out of while(1) loop and go to next shell coding frame */
+ break;
+ }
+ }
+ abs_pulses_ptr += SHELL_CODEC_FRAME_LENGTH;
+ }
+
+ /**************/
+ /* Rate level */
+ /**************/
+ /* find rate level that leads to fewest bits for coding of pulses per block info */
+ minSumBits_Q6 = SKP_int32_MAX;
+ for( k = 0; k < N_RATE_LEVELS - 1; k++ ) {
+ nBits_ptr = SKP_Silk_pulses_per_block_BITS_Q6[ k ];
+ sumBits_Q6 = SKP_Silk_rate_levels_BITS_Q6[sigtype][ k ];
+ for( i = 0; i < iter; i++ ) {
+ if( nRshifts[ i ] > 0 ) {
+ sumBits_Q6 += nBits_ptr[ MAX_PULSES + 1 ];
+ } else {
+ sumBits_Q6 += nBits_ptr[ sum_pulses[ i ] ];
+ }
+ }
+ if( sumBits_Q6 < minSumBits_Q6 ) {
+ minSumBits_Q6 = sumBits_Q6;
+ RateLevelIndex = k;
+ }
+ }
+ SKP_Silk_range_encoder( psRC, RateLevelIndex, SKP_Silk_rate_levels_CDF[ sigtype ] );
+
+ /***************************************************/
+ /* Sum-Weighted-Pulses Encoding */
+ /***************************************************/
+ cdf_ptr = SKP_Silk_pulses_per_block_CDF[ RateLevelIndex ];
+ for( i = 0; i < iter; i++ ) {
+ if( nRshifts[ i ] == 0 ) {
+ SKP_Silk_range_encoder( psRC, sum_pulses[ i ], cdf_ptr );
+ } else {
+ SKP_Silk_range_encoder( psRC, MAX_PULSES + 1, cdf_ptr );
+ for( k = 0; k < nRshifts[ i ] - 1; k++ ) {
+ SKP_Silk_range_encoder( psRC, MAX_PULSES + 1, SKP_Silk_pulses_per_block_CDF[ N_RATE_LEVELS - 1 ] );
+ }
+ SKP_Silk_range_encoder( psRC, sum_pulses[ i ], SKP_Silk_pulses_per_block_CDF[ N_RATE_LEVELS - 1 ] );
+ }
+ }
+
+ /******************/
+ /* Shell Encoding */
+ /******************/
+ for( i = 0; i < iter; i++ ) {
+ if( sum_pulses[ i ] > 0 ) {
+ SKP_Silk_shell_encoder( psRC, &abs_pulses[ i * SHELL_CODEC_FRAME_LENGTH ] );
+ }
+ }
+
+ /****************/
+ /* LSB Encoding */
+ /****************/
+ for( i = 0; i < iter; i++ ) {
+ if( nRshifts[ i ] > 0 ) {
+ pulses_ptr = &q[ i * SHELL_CODEC_FRAME_LENGTH ];
+ nLS = nRshifts[ i ] - 1;
+ for( k = 0; k < SHELL_CODEC_FRAME_LENGTH; k++ ) {
+ abs_q = SKP_abs( pulses_ptr[ k ] );
+ for( j = nLS; j > 0; j-- ) {
+ bit = SKP_RSHIFT( abs_q, j ) & 1;
+ SKP_Silk_range_encoder( psRC, bit, SKP_Silk_lsb_CDF );
+ }
+ bit = abs_q & 1;
+ SKP_Silk_range_encoder( psRC, bit, SKP_Silk_lsb_CDF );
+ }
+ }
+ }
+
+ /****************/
+ /* Encode signs */
+ /****************/
+ SKP_Silk_encode_signs( psRC, q, frame_length, sigtype, QuantOffsetType, RateLevelIndex );
+}
--- /dev/null
+++ b/src/SKP_Silk_find_LPC_FIX.c
@@ -1,0 +1,147 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_main_FIX.h"
+
+/* Finds LPC vector from correlations, and converts to NLSF */
+void SKP_Silk_find_LPC_FIX(
+ SKP_int NLSF_Q15[], /* O NLSFs */
+ SKP_int *interpIndex, /* O NLSF interpolation index, only used for NLSF interpolation */
+ const SKP_int prev_NLSFq_Q15[], /* I previous NLSFs, only used for NLSF interpolation */
+ const SKP_int useInterpolatedNLSFs, /* I Flag */
+ const SKP_int LPC_order, /* I LPC order */
+ const SKP_int16 x[], /* I Input signal */
+ const SKP_int subfr_length /* I Input signal subframe length including preceeding samples */
+)
+{
+ SKP_int k;
+ SKP_int32 a_Q16[ MAX_LPC_ORDER ];
+
+ SKP_int isInterpLower, shift;
+ SKP_int16 S[ MAX_LPC_ORDER ];
+ SKP_int32 res_nrg0, res_nrg1;
+ SKP_int rshift0, rshift1;
+
+ /* Used only for LSF interpolation */
+ SKP_int32 a_tmp_Q16[ MAX_LPC_ORDER ], res_nrg_interp, res_nrg, res_tmp_nrg, res_nrg_2nd;
+ SKP_int res_nrg_interp_Q, res_nrg_Q, res_tmp_nrg_Q, res_nrg_2nd_Q;
+ SKP_int16 a_tmp_Q12[ MAX_LPC_ORDER ];
+ SKP_int NLSF0_Q15[ MAX_LPC_ORDER ];
+ SKP_int16 LPC_res[ ( MAX_FRAME_LENGTH + NB_SUBFR * MAX_LPC_ORDER ) / 2 ];
+
+ /* Default: no interpolation */
+ *interpIndex = 4;
+
+ /* Burg AR analysis for the full frame */
+ SKP_Silk_burg_modified( &res_nrg, &res_nrg_Q, a_Q16, x, subfr_length, NB_SUBFR, FIND_LPC_COND_FAC_Q32, LPC_order );
+
+ if( useInterpolatedNLSFs == 1 ) {
+
+ /* Optimal solution for last 10 ms */
+ SKP_Silk_burg_modified( &res_tmp_nrg, &res_tmp_nrg_Q, a_tmp_Q16, x + ( NB_SUBFR >> 1 ) * subfr_length,
+ subfr_length, ( NB_SUBFR >> 1 ), FIND_LPC_COND_FAC_Q32, LPC_order );
+
+ /* subtract residual energy here, as that's easier than adding it to the */
+ /* residual energy of the first 10 ms in each iteration of the search below */
+ shift = res_tmp_nrg_Q - res_nrg_Q;
+ if( shift >= 0 ) {
+ if( shift < 32 ) {
+ res_nrg = res_nrg - SKP_RSHIFT( res_tmp_nrg, shift );
+ }
+ } else {
+ SKP_assert( shift > -32 );
+ res_nrg = SKP_RSHIFT( res_nrg, -shift ) - res_tmp_nrg;
+ res_nrg_Q = res_tmp_nrg_Q;
+ }
+
+ /* Convert to NLSFs */
+ SKP_Silk_A2NLSF( NLSF_Q15, a_tmp_Q16, LPC_order );
+
+ /* Search over interpolation indices to find the one with lowest residual energy */
+ res_nrg_2nd = SKP_int32_MAX;
+ for( k = 3; k >= 0; k-- ) {
+ /* Interpolate NLSFs for first half */
+ SKP_Silk_interpolate( NLSF0_Q15, prev_NLSFq_Q15, NLSF_Q15, k, LPC_order );
+
+ /* Convert to LPC for residual energy evaluation */
+ SKP_Silk_NLSF2A_stable( a_tmp_Q12, NLSF0_Q15, LPC_order );
+
+ /* Calculate residual energy with NLSF interpolation */
+ SKP_memset( S, 0, LPC_order * sizeof( SKP_int16 ) );
+ SKP_Silk_LPC_analysis_filter( x, a_tmp_Q12, S, LPC_res, 2 * subfr_length, LPC_order );
+
+ SKP_Silk_sum_sqr_shift( &res_nrg0, &rshift0, LPC_res + LPC_order, subfr_length - LPC_order );
+ SKP_Silk_sum_sqr_shift( &res_nrg1, &rshift1, LPC_res + LPC_order + subfr_length, subfr_length - LPC_order );
+
+ /* Add subframe energies from first half frame */
+ shift = rshift0 - rshift1;
+ if( shift >= 0 ) {
+ res_nrg1 = SKP_RSHIFT( res_nrg1, shift );
+ res_nrg_interp_Q = -rshift0;
+ } else {
+ res_nrg0 = SKP_RSHIFT( res_nrg0, -shift );
+ res_nrg_interp_Q = -rshift1;
+ }
+ res_nrg_interp = SKP_ADD32( res_nrg0, res_nrg1 );
+
+ /* Compare with first half energy without NLSF interpolation, or best interpolated value so far */
+ shift = res_nrg_interp_Q - res_nrg_Q;
+ if( shift >= 0 ) {
+ if( SKP_RSHIFT( res_nrg_interp, shift ) < res_nrg ) {
+ isInterpLower = SKP_TRUE;
+ } else {
+ isInterpLower = SKP_FALSE;
+ }
+ } else {
+ if( -shift < 32 ) {
+ if( res_nrg_interp < SKP_RSHIFT( res_nrg, -shift ) ) {
+ isInterpLower = SKP_TRUE;
+ } else {
+ isInterpLower = SKP_FALSE;
+ }
+ } else {
+ isInterpLower = SKP_FALSE;
+ }
+ }
+
+ /* Determine whether current interpolated NLSFs are best so far */
+ if( isInterpLower == SKP_TRUE ) {
+ /* Interpolation has lower residual energy */
+ res_nrg = res_nrg_interp;
+ res_nrg_Q = res_nrg_interp_Q;
+ *interpIndex = k;
+ }
+ res_nrg_2nd = res_nrg_interp;
+ res_nrg_2nd_Q = res_nrg_interp_Q;
+ }
+ }
+
+ if( *interpIndex == 4 ) {
+ /* NLSF interpolation is currently inactive, calculate NLSFs from full frame AR coefficients */
+ SKP_Silk_A2NLSF( NLSF_Q15, a_Q16, LPC_order );
+ }
+}
--- /dev/null
+++ b/src/SKP_Silk_find_LTP_FIX.c
@@ -1,0 +1,234 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_main_FIX.h"
+
+void SKP_Silk_fit_LTP(
+ SKP_int32 LTP_coefs_Q16[ LTP_ORDER ],
+ SKP_int16 LTP_coefs_Q14[ LTP_ORDER ]
+);
+
+void SKP_Silk_find_LTP_FIX(
+ SKP_int16 b_Q14[ NB_SUBFR * LTP_ORDER ], /* O LTP coefs */
+ SKP_int32 WLTP[ NB_SUBFR * LTP_ORDER * LTP_ORDER ], /* O Weight for LTP quantization */
+ SKP_int *LTPredCodGain_Q7, /* O LTP coding gain */
+ const SKP_int16 r_first[], /* I residual signal after LPC signal + state for first 10 ms */
+ const SKP_int16 r_last[], /* I residual signal after LPC signal + state for last 10 ms */
+ const SKP_int lag[ NB_SUBFR ], /* I LTP lags */
+ const SKP_int32 Wght_Q15[ NB_SUBFR ], /* I weights */
+ const SKP_int subfr_length, /* I subframe length */
+ const SKP_int mem_offset, /* I number of samples in LTP memory */
+ SKP_int corr_rshifts[ NB_SUBFR ] /* O right shifts applied to correlations */
+)
+{
+ SKP_int i, k, lshift;
+ const SKP_int16 *r_ptr, *lag_ptr;
+ SKP_int16 *b_Q14_ptr;
+
+ SKP_int32 regu;
+ SKP_int32 *WLTP_ptr;
+ SKP_int32 b_Q16[ LTP_ORDER ], delta_b_Q14[ LTP_ORDER ], d_Q14[ NB_SUBFR ], nrg[ NB_SUBFR ], g_Q26;
+ SKP_int32 w[ NB_SUBFR ], WLTP_max, max_abs_d_Q14, max_w_bits;
+
+ SKP_int32 temp32, denom32;
+ SKP_int extra_shifts;
+ SKP_int rr_shifts, maxRshifts, maxRshifts_wxtra, LZs;
+ SKP_int32 LPC_res_nrg, LPC_LTP_res_nrg, div_Q16;
+ SKP_int32 Rr[ LTP_ORDER ], rr[ NB_SUBFR ];
+ SKP_int32 wd, m_Q12;
+
+ b_Q14_ptr = b_Q14;
+ WLTP_ptr = WLTP;
+ r_ptr = &r_first[ mem_offset ];
+ for( k = 0; k < NB_SUBFR; k++ ) {
+ if( k == ( NB_SUBFR >> 1 ) ) { /* shift residual for last 10 ms */
+ r_ptr = &r_last[ mem_offset ];
+ }
+ lag_ptr = r_ptr - ( lag[ k ] + LTP_ORDER / 2 );
+
+ SKP_Silk_sum_sqr_shift( &rr[ k ], &rr_shifts, r_ptr, subfr_length ); /* rr[ k ] in Q( -rr_shifts ) */
+ /* Assure headroom */
+ LZs = SKP_Silk_CLZ32( rr[k] );
+ if( LZs < LTP_CORRS_HEAD_ROOM ) {
+ rr[ k ] = SKP_RSHIFT_ROUND( rr[ k ], LTP_CORRS_HEAD_ROOM - LZs );
+ rr_shifts += (LTP_CORRS_HEAD_ROOM - LZs);
+ }
+ corr_rshifts[ k ] = rr_shifts;
+ SKP_Silk_corrMatrix_FIX( lag_ptr, subfr_length, LTP_ORDER, WLTP_ptr, &corr_rshifts[ k ] ); /* WLTP_fix_ptr in Q( -corr_rshifts[ k ] ) */
+ /* The correlation vector always have lower max abs value than rr and/or RR so head room is assured */
+ SKP_Silk_corrVector_FIX( lag_ptr, r_ptr, subfr_length, LTP_ORDER, Rr, corr_rshifts[ k ] ); /* Rr_fix_ptr in Q( -corr_rshifts[ k ] ) */
+ if( corr_rshifts[ k ] > rr_shifts ) {
+ rr[ k ] = SKP_RSHIFT( rr[ k ], corr_rshifts[ k ] - rr_shifts ); /* rr[ k ] in Q( -corr_rshifts[ k ] ) */
+ }
+ SKP_assert( rr[ k ] >= 0 );
+
+ regu = SKP_SMULWB( rr[ k ] + 1, LTP_DAMPING_Q16 );
+ SKP_Silk_regularize_correlations_FIX( WLTP_ptr, &rr[k], regu, LTP_ORDER );
+
+ SKP_Silk_solve_LDL_FIX( WLTP_ptr, LTP_ORDER, Rr, b_Q16 ); /* WLTP_fix_ptr and Rr_fix_ptr both in Q(-corr_rshifts[k]) */
+
+ /* Limit and store in Q14 */
+ SKP_Silk_fit_LTP( b_Q16, b_Q14_ptr );
+
+ /* Calculate residual energy */
+ nrg[ k ] = SKP_Silk_residual_energy16_covar_FIX( b_Q14_ptr, WLTP_ptr, Rr, rr[ k ], LTP_ORDER, 14 ); /* nrg_fix in Q( -corr_rshifts[ k ] ) */
+
+ /* temp = Wght[ k ] / ( nrg[ k ] * Wght[ k ] + 0.01f * subfr_length ); */
+ extra_shifts = SKP_min_int( corr_rshifts[ k ], LTP_CORRS_HEAD_ROOM );
+ denom32 = SKP_LSHIFT_SAT32( SKP_SMULWB( nrg[ k ], Wght_Q15[ k ] ), 1 + extra_shifts ) + /* Q( -corr_rshifts[ k ] + extra_shifts ) */
+ SKP_RSHIFT( SKP_SMULWB( subfr_length, 655 ), corr_rshifts[ k ] - extra_shifts ); /* Q( -corr_rshifts[ k ] + extra_shifts ) */
+ denom32 = SKP_max( denom32, 1 );
+ SKP_assert( ((SKP_int64)Wght_Q15[ k ] << 16 ) < SKP_int32_MAX ); /* Wght always < 0.5 in Q0 */
+ temp32 = SKP_DIV32( SKP_LSHIFT( ( SKP_int32 )Wght_Q15[ k ], 16 ), denom32 ); /* Q( 15 + 16 + corr_rshifts[k] - extra_shifts ) */
+ temp32 = SKP_RSHIFT( temp32, 31 + corr_rshifts[ k ] - extra_shifts - 26 ); /* Q26 */
+
+ /* Limit temp such that the below scaling never wraps around */
+ WLTP_max = 0;
+ for( i = 0; i < LTP_ORDER * LTP_ORDER; i++ ) {
+ WLTP_max = SKP_max( WLTP_ptr[ i ], WLTP_max );
+ }
+ lshift = SKP_Silk_CLZ32( WLTP_max ) - 1 - 3; /* keep 3 bits free for vq_nearest_neighbor_fix */
+ SKP_assert( 26 - 18 + lshift >= 0 );
+ if( 26 - 18 + lshift < 31 ) {
+ temp32 = SKP_min_32( temp32, SKP_LSHIFT( ( SKP_int32 )1, 26 - 18 + lshift ) );
+ }
+
+ SKP_Silk_scale_vector32_Q26_lshift_18( WLTP_ptr, temp32, LTP_ORDER * LTP_ORDER ); /* WLTP_ptr in Q( 18 - corr_rshifts[ k ] ) */
+
+ w[ k ] = matrix_ptr( WLTP_ptr, ( LTP_ORDER >> 1 ), ( LTP_ORDER >> 1 ), LTP_ORDER ); /* w in Q( 18 - corr_rshifts[ k ] ) */
+ SKP_assert( w[k] >= 0 );
+
+ r_ptr += subfr_length;
+ b_Q14_ptr += LTP_ORDER;
+ WLTP_ptr += LTP_ORDER * LTP_ORDER;
+ }
+
+ maxRshifts = 0;
+ for( k = 0; k < NB_SUBFR; k++ ) {
+ maxRshifts = SKP_max_int( corr_rshifts[ k ], maxRshifts );
+ }
+
+ /* compute LTP coding gain */
+ if( LTPredCodGain_Q7 != NULL ) {
+ LPC_LTP_res_nrg = 0;
+ LPC_res_nrg = 0;
+ SKP_assert( LTP_CORRS_HEAD_ROOM >= 2 ); /* Check that no overflow will happen when adding */
+ for( k = 0; k < NB_SUBFR; k++ ) {
+ LPC_res_nrg = SKP_ADD32( LPC_res_nrg, SKP_RSHIFT( SKP_ADD32( SKP_SMULWB( rr[ k ], Wght_Q15[ k ] ), 1 ), 1 + ( maxRshifts - corr_rshifts[ k ] ) ) ); /* Q( -maxRshifts ) */
+ LPC_LTP_res_nrg = SKP_ADD32( LPC_LTP_res_nrg, SKP_RSHIFT( SKP_ADD32( SKP_SMULWB( nrg[ k ], Wght_Q15[ k ] ), 1 ), 1 + ( maxRshifts - corr_rshifts[ k ] ) ) ); /* Q( -maxRshifts ) */
+ }
+ LPC_LTP_res_nrg = SKP_max( LPC_LTP_res_nrg, 1 ); /* avoid division by zero */
+
+ div_Q16 = SKP_DIV32_varQ( LPC_res_nrg, LPC_LTP_res_nrg, 16 );
+ *LTPredCodGain_Q7 = ( SKP_int )SKP_SMULBB( 3, SKP_Silk_lin2log( div_Q16 ) - ( 16 << 7 ) );
+
+ SKP_assert( *LTPredCodGain_Q7 == ( SKP_int )SKP_SAT16( SKP_MUL( 3, SKP_Silk_lin2log( div_Q16 ) - ( 16 << 7 ) ) ) );
+ }
+
+ /* smoothing */
+ /* d = sum( B, 1 ); */
+ b_Q14_ptr = b_Q14;
+ for( k = 0; k < NB_SUBFR; k++ ) {
+ d_Q14[ k ] = 0;
+ for( i = 0; i < LTP_ORDER; i++ ) {
+ d_Q14[ k ] += b_Q14_ptr[ i ];
+ }
+ b_Q14_ptr += LTP_ORDER;
+ }
+
+ /* m = ( w * d' ) / ( sum( w ) + 1e-3 ); */
+
+ /* Find maximum absolute value of d_Q14 and the bits used by w in Q0 */
+ max_abs_d_Q14 = 0;
+ max_w_bits = 0;
+ for( k = 0; k < NB_SUBFR; k++ ) {
+ max_abs_d_Q14 = SKP_max_32( max_abs_d_Q14, SKP_abs( d_Q14[ k ] ) );
+ /* w[ k ] is in Q( 18 - corr_rshifts[ k ] ) */
+ /* Find bits needed in Q( 18 - maxRshifts ) */
+ max_w_bits = SKP_max_32( max_w_bits, 32 - SKP_Silk_CLZ32( w[ k ] ) + corr_rshifts[ k ] - maxRshifts );
+ }
+
+ /* max_abs_d_Q14 = (5 << 15); worst case, i.e. LTP_ORDER * -SKP_int16_MIN */
+ SKP_assert( max_abs_d_Q14 <= ( 5 << 15 ) );
+
+ /* How many bits is needed for w*d' in Q( 18 - maxRshifts ) in the worst case, of all d_Q14's being equal to max_abs_d_Q14 */
+ extra_shifts = max_w_bits + 32 - SKP_Silk_CLZ32( max_abs_d_Q14 ) - 14;
+
+ /* Subtract what we got available; bits in output var plus maxRshifts */
+ extra_shifts -= ( 32 - 1 - 2 + maxRshifts ); /* Keep sign bit free as well as 2 bits for accumulation */
+ extra_shifts = SKP_max_int( extra_shifts, 0 );
+
+ maxRshifts_wxtra = maxRshifts + extra_shifts;
+
+ temp32 = SKP_RSHIFT( 262, maxRshifts + extra_shifts ) + 1; /* 1e-3f in Q( 18 - (maxRshifts + extra_shifts) ) */
+ wd = 0;
+ for( k = 0; k < NB_SUBFR; k++ ) {
+ /* w has at least 2 bits of headroom so no overflow should happen */
+ temp32 = SKP_ADD32( temp32, SKP_RSHIFT( w[ k ], maxRshifts_wxtra - corr_rshifts[ k ] ) ); /* Q( 18 - maxRshifts_wxtra ) */
+ wd = SKP_ADD32( wd, SKP_LSHIFT( SKP_SMULWW( SKP_RSHIFT( w[ k ], maxRshifts_wxtra - corr_rshifts[ k ] ), d_Q14[ k ] ), 2 ) ); /* Q( 18 - maxRshifts_wxtra ) */
+ }
+ m_Q12 = SKP_DIV32_varQ( wd, temp32, 12 );
+
+ b_Q14_ptr = b_Q14;
+ for( k = 0; k < NB_SUBFR; k++ ) {
+ /* w_fix[ k ] from Q( 18 - corr_rshifts[ k ] ) to Q( 16 ) */
+ if( 2 - corr_rshifts[k] > 0 ) {
+ temp32 = SKP_RSHIFT( w[ k ], 2 - corr_rshifts[ k ] );
+ } else {
+ temp32 = SKP_LSHIFT_SAT32( w[ k ], corr_rshifts[ k ] - 2 );
+ }
+
+ g_Q26 = SKP_MUL(
+ SKP_DIV32(
+ LTP_SMOOTHING_Q26,
+ SKP_RSHIFT( LTP_SMOOTHING_Q26, 10 ) + temp32 ), /* Q10 */
+ SKP_LSHIFT_SAT32( SKP_SUB_SAT32( ( SKP_int32 )m_Q12, SKP_RSHIFT( d_Q14[ k ], 2 ) ), 4 ) ); /* Q16 */
+
+ temp32 = 0;
+ for( i = 0; i < LTP_ORDER; i++ ) {
+ delta_b_Q14[ i ] = SKP_max_16( b_Q14_ptr[ i ], 1638 ); /* 1638_Q14 = 0.1_Q0 */
+ temp32 += delta_b_Q14[ i ]; /* Q14 */
+ }
+ temp32 = SKP_DIV32( g_Q26, temp32 ); /* Q14->Q12 */
+ for( i = 0; i < LTP_ORDER; i++ ) {
+ b_Q14_ptr[ i ] = SKP_LIMIT( ( SKP_int32 )b_Q14_ptr[ i ] + SKP_SMULWB( SKP_LSHIFT_SAT32( temp32, 4 ), delta_b_Q14[ i ] ), -16000, 28000 );
+ }
+ b_Q14_ptr += LTP_ORDER;
+ }
+}
+
+void SKP_Silk_fit_LTP(
+ SKP_int32 LTP_coefs_Q16[ LTP_ORDER ],
+ SKP_int16 LTP_coefs_Q14[ LTP_ORDER ]
+)
+{
+ SKP_int i;
+
+ for( i = 0; i < LTP_ORDER; i++ ) {
+ LTP_coefs_Q14[ i ] = ( SKP_int16 )SKP_SAT16( SKP_RSHIFT_ROUND( LTP_coefs_Q16[ i ], 2 ) );
+ }
+}
--- /dev/null
+++ b/src/SKP_Silk_find_pitch_lags_FIX.c
@@ -1,0 +1,122 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_main_FIX.h"
+
+/* Find pitch lags */
+void SKP_Silk_find_pitch_lags_FIX(
+ SKP_Silk_encoder_state_FIX *psEnc, /* I/O encoder state */
+ SKP_Silk_encoder_control_FIX *psEncCtrl, /* I/O encoder control */
+ SKP_int16 res[], /* O residual */
+ const SKP_int16 x[] /* I Speech signal */
+)
+{
+ SKP_Silk_predict_state_FIX *psPredSt = &psEnc->sPred;
+ SKP_int buf_len, i;
+ SKP_int32 scale;
+ SKP_int32 thrhld_Q15;
+ const SKP_int16 *x_buf, *x_buf_ptr;
+ SKP_int16 Wsig[ FIND_PITCH_LPC_WIN_MAX ], *Wsig_ptr;
+ SKP_int32 auto_corr[ FIND_PITCH_LPC_ORDER_MAX + 1 ];
+ SKP_int16 rc_Q15[ FIND_PITCH_LPC_ORDER_MAX ];
+ SKP_int32 A_Q24[ FIND_PITCH_LPC_ORDER_MAX ];
+ SKP_int32 FiltState[ FIND_PITCH_LPC_ORDER_MAX ];
+ SKP_int16 A_Q12[ FIND_PITCH_LPC_ORDER_MAX ];
+
+ /******************************************/
+ /* Setup buffer lengths etc based of Fs. */
+ /******************************************/
+ buf_len = SKP_ADD_LSHIFT( psEnc->sCmn.la_pitch, psEnc->sCmn.frame_length, 1 );
+
+ /* Safty check */
+ SKP_assert( buf_len >= psPredSt->pitch_LPC_win_length );
+
+ x_buf = x - psEnc->sCmn.frame_length;
+
+ /*************************************/
+ /* Estimate LPC AR coeficients */
+ /*************************************/
+
+ /* Calculate windowed signal */
+
+ /* First LA_LTP samples */
+ x_buf_ptr = x_buf + buf_len - psPredSt->pitch_LPC_win_length;
+ Wsig_ptr = Wsig;
+ SKP_Silk_apply_sine_window( Wsig_ptr, x_buf_ptr, 1, psEnc->sCmn.la_pitch );
+
+ /* Middle un - windowed samples */
+ Wsig_ptr += psEnc->sCmn.la_pitch;
+ x_buf_ptr += psEnc->sCmn.la_pitch;
+ SKP_memcpy( Wsig_ptr, x_buf_ptr, ( psPredSt->pitch_LPC_win_length - SKP_LSHIFT( psEnc->sCmn.la_pitch, 1 ) ) * sizeof( SKP_int16 ) );
+
+ /* Last LA_LTP samples */
+ Wsig_ptr += psPredSt->pitch_LPC_win_length - SKP_LSHIFT( psEnc->sCmn.la_pitch, 1 );
+ x_buf_ptr += psPredSt->pitch_LPC_win_length - SKP_LSHIFT( psEnc->sCmn.la_pitch, 1 );
+ SKP_Silk_apply_sine_window( Wsig_ptr, x_buf_ptr, 2, psEnc->sCmn.la_pitch );
+
+ /* Calculate autocorrelation sequence */
+ SKP_Silk_autocorr( auto_corr, &scale, Wsig, psPredSt->pitch_LPC_win_length, psEnc->sCmn.pitchEstimationLPCOrder + 1 );
+
+ /* add white noise, as fraction of energy */
+ auto_corr[ 0 ] = SKP_SMLAWB( auto_corr[ 0 ], auto_corr[ 0 ], FIND_PITCH_WHITE_NOISE_FRACTION_Q16 );
+
+ /* calculate the reflection coefficients using schur */
+ SKP_Silk_schur( rc_Q15, auto_corr, psEnc->sCmn.pitchEstimationLPCOrder );
+
+ /* convert reflection coefficients to prediction coefficients */
+ SKP_Silk_k2a( A_Q24, rc_Q15, psEnc->sCmn.pitchEstimationLPCOrder );
+
+ /* Convert From 32 bit Q24 to 16 bit Q12 coefs */
+ for( i = 0; i < psEnc->sCmn.pitchEstimationLPCOrder; i++ ) {
+ A_Q12[ i ] = ( SKP_int16 )SKP_SAT16( SKP_RSHIFT( A_Q24[ i ], 12 ) );
+ }
+
+ /* Do BWE */
+ SKP_Silk_bwexpander( A_Q12, psEnc->sCmn.pitchEstimationLPCOrder, FIND_PITCH_BANDWITH_EXPANSION_Q16 );
+
+ /*****************************************/
+ /* LPC analysis filtering */
+ /*****************************************/
+ SKP_memset( FiltState, 0, psEnc->sCmn.pitchEstimationLPCOrder * sizeof( SKP_int16 ) );
+ SKP_Silk_MA_Prediction( x_buf, A_Q12, FiltState, res, buf_len, psEnc->sCmn.pitchEstimationLPCOrder );
+ SKP_memset( res, 0, psEnc->sCmn.pitchEstimationLPCOrder * sizeof( SKP_int16 ) );
+
+ /* Threshold for pitch estimator */
+ thrhld_Q15 = ( 1 << 14 ); // 0.5f in Q15
+ thrhld_Q15 = SKP_SMLABB( thrhld_Q15, -131, psEnc->sCmn.pitchEstimationLPCOrder );
+ thrhld_Q15 = SKP_SMLABB( thrhld_Q15, -13, ( SKP_int16 )SKP_Silk_SQRT_APPROX( SKP_LSHIFT( ( SKP_int32 )psEnc->speech_activity_Q8, 8 ) ) );
+ thrhld_Q15 = SKP_SMLABB( thrhld_Q15, 4587, psEnc->sCmn.prev_sigtype );
+ thrhld_Q15 = SKP_MLA( thrhld_Q15, -31, SKP_RSHIFT( psEncCtrl->input_tilt_Q15, 8 ) );
+ thrhld_Q15 = SKP_SAT16( thrhld_Q15 );
+
+ /*****************************************/
+ /* Call Pitch estimator */
+ /*****************************************/
+ psEncCtrl->sCmn.sigtype = SKP_Silk_pitch_analysis_core( res, psEncCtrl->sCmn.pitchL, &psEncCtrl->sCmn.lagIndex,
+ &psEncCtrl->sCmn.contourIndex, &psEnc->LTPCorr_Q15, psEnc->sCmn.prevLag, psEnc->pitchEstimationThreshold_Q16,
+ ( SKP_int16 )thrhld_Q15, psEnc->sCmn.fs_kHz, psEnc->sCmn.pitchEstimationComplexity );
+}
--- /dev/null
+++ b/src/SKP_Silk_find_pred_coefs_FIX.c
@@ -1,0 +1,148 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_main_FIX.h"
+
+
+#define VARQ 1 // EXPERIMENTAL
+#define Qx 0 // EXPERIMENTAL
+
+void SKP_Silk_find_pred_coefs_FIX(
+ SKP_Silk_encoder_state_FIX *psEnc, /* I/O encoder state */
+ SKP_Silk_encoder_control_FIX *psEncCtrl, /* I/O encoder control */
+ const SKP_int16 res_pitch[] /* I Residual from pitch analysis */
+)
+{
+ SKP_int i;
+ SKP_int32 WLTP[ NB_SUBFR * LTP_ORDER * LTP_ORDER ];
+ SKP_int32 invGains_Q16[ NB_SUBFR ], local_gains_Qx[ NB_SUBFR ], Wght_Q15[ NB_SUBFR ];
+ SKP_int NLSF_Q15[ MAX_LPC_ORDER ];
+ const SKP_int16 *x_ptr;
+ SKP_int16 *x_pre_ptr, LPC_in_pre[ NB_SUBFR * MAX_LPC_ORDER + MAX_FRAME_LENGTH ];
+
+ SKP_int32 tmp, min_gain_Q16;
+#if !VARQ
+ SKP_int LZ;
+#endif
+ SKP_int LTP_corrs_rshift[ NB_SUBFR ];
+
+
+ /* weighting for weighted least squares */
+ min_gain_Q16 = SKP_int32_MAX >> 6;
+ for( i = 0; i < NB_SUBFR; i++ ) {
+ min_gain_Q16 = SKP_min( min_gain_Q16, psEncCtrl->Gains_Q16[ i ] );
+ }
+#if !VARQ
+ LZ = SKP_Silk_CLZ32( min_gain_Q16 ) - 1;
+ LZ = SKP_LIMIT( LZ, 0, 16 );
+ min_gain_Q16 = SKP_RSHIFT( min_gain_Q16, 2 ); /* Ensure that maximum invGains_Q16 is within range of a 16 bit int */
+#endif
+ for( i = 0; i < NB_SUBFR; i++ ) {
+ /* Divide to Q16 */
+ SKP_assert( psEncCtrl->Gains_Q16[ i ] > 0 );
+#if VARQ
+ /* Invert and normalize gains, and ensure that maximum invGains_Q16 is within range of a 16 bit int */
+ invGains_Q16[ i ] = SKP_DIV32_varQ( min_gain_Q16, psEncCtrl->Gains_Q16[ i ], 16 - 2 );
+#else
+ invGains_Q16[ i ] = SKP_DIV32( SKP_LSHIFT( min_gain_Q16, LZ ), SKP_RSHIFT( psEncCtrl->Gains_Q16[ i ], 16 - LZ ) );
+#endif
+
+ /* Ensure Wght_Q15 a minimum value 1 */
+ invGains_Q16[ i ] = SKP_max( invGains_Q16[ i ], 363 );
+
+ /* Square the inverted gains */
+ SKP_assert( invGains_Q16[ i ] == SKP_SAT16( invGains_Q16[ i ] ) );
+ tmp = SKP_SMULWB( invGains_Q16[ i ], invGains_Q16[ i ] );
+ Wght_Q15[ i ] = SKP_RSHIFT( tmp, 1 );
+
+ /* Invert the inverted and normalized gains */
+ local_gains_Qx[ i ] = SKP_DIV32( ( 1 << ( 16 + Qx ) ), invGains_Q16[ i ] );
+ }
+
+ if( psEncCtrl->sCmn.sigtype == SIG_TYPE_VOICED ) {
+ /**********/
+ /* VOICED */
+ /**********/
+ SKP_assert( psEnc->sCmn.frame_length - psEnc->sCmn.predictLPCOrder >= psEncCtrl->sCmn.pitchL[ 0 ] + LTP_ORDER / 2 );
+
+ /* LTP analysis */
+ SKP_Silk_find_LTP_FIX( psEncCtrl->LTPCoef_Q14, WLTP, &psEncCtrl->LTPredCodGain_Q7, res_pitch,
+ res_pitch + SKP_RSHIFT( psEnc->sCmn.frame_length, 1 ), psEncCtrl->sCmn.pitchL, Wght_Q15,
+ psEnc->sCmn.subfr_length, psEnc->sCmn.frame_length, LTP_corrs_rshift );
+
+
+ /* Quantize LTP gain parameters */
+ SKP_Silk_quant_LTP_gains_FIX( psEncCtrl->LTPCoef_Q14, psEncCtrl->sCmn.LTPIndex, &psEncCtrl->sCmn.PERIndex,
+ WLTP, psEnc->mu_LTP_Q8, psEnc->sCmn.LTPQuantLowComplexity );
+
+ /* Control LTP scaling */
+ SKP_Silk_LTP_scale_ctrl_FIX( psEnc, psEncCtrl );
+
+ /* Create LTP residual */
+ SKP_Silk_LTP_analysis_filter_FIX( LPC_in_pre, psEnc->x_buf + psEnc->sCmn.frame_length - psEnc->sCmn.predictLPCOrder,
+ psEncCtrl->LTPCoef_Q14, psEncCtrl->sCmn.pitchL, invGains_Q16, 16, psEnc->sCmn.subfr_length, psEnc->sCmn.predictLPCOrder );
+
+ } else {
+ /************/
+ /* UNVOICED */
+ /************/
+ /* Create signal with prepended subframes, scaled by inverse gains */
+ x_ptr = psEnc->x_buf + psEnc->sCmn.frame_length - psEnc->sCmn.predictLPCOrder;
+ x_pre_ptr = LPC_in_pre;
+ for( i = 0; i < NB_SUBFR; i++ ) {
+ SKP_Silk_scale_copy_vector16( x_pre_ptr, x_ptr, invGains_Q16[ i ],
+ psEnc->sCmn.subfr_length + psEnc->sCmn.predictLPCOrder );
+ x_pre_ptr += psEnc->sCmn.subfr_length + psEnc->sCmn.predictLPCOrder;
+ x_ptr += psEnc->sCmn.subfr_length;
+ }
+
+ SKP_memset( psEncCtrl->LTPCoef_Q14, 0, NB_SUBFR * LTP_ORDER * sizeof( SKP_int16 ) );
+ psEncCtrl->LTPredCodGain_Q7 = 0;
+ }
+
+ /* LPC_in_pre contains the LTP-filtered input for voiced, and the unfiltered input for unvoiced */
+ TIC(FIND_LPC)
+ SKP_Silk_find_LPC_FIX( NLSF_Q15, &psEncCtrl->sCmn.NLSFInterpCoef_Q2, psEnc->sPred.prev_NLSFq_Q15,
+ psEnc->sCmn.useInterpolatedNLSFs * ( 1 - psEnc->sCmn.first_frame_after_reset ), psEnc->sCmn.predictLPCOrder,
+ LPC_in_pre, psEnc->sCmn.subfr_length + psEnc->sCmn.predictLPCOrder );
+ TOC(FIND_LPC)
+
+
+ /* Quantize LSFs */
+ TIC(PROCESS_LSFS)
+ SKP_Silk_process_NLSFs_FIX( psEnc, psEncCtrl, NLSF_Q15 );
+ TOC(PROCESS_LSFS)
+
+ /* Calculate residual energy using quantized LPC coefficients */
+ SKP_Silk_residual_energy_FIX( psEncCtrl->ResNrg, psEncCtrl->ResNrgQ, LPC_in_pre, psEncCtrl->PredCoef_Q12, local_gains_Qx, Qx,
+ psEnc->sCmn.subfr_length, psEnc->sCmn.predictLPCOrder );
+
+ /* Copy to prediction struct for use in next frame for fluctuation reduction */
+ SKP_memcpy( psEnc->sPred.prev_NLSFq_Q15, NLSF_Q15, psEnc->sCmn.predictLPCOrder * sizeof( SKP_int ) );
+
+}
+
--- /dev/null
+++ b/src/SKP_Silk_gain_quant.c
@@ -1,0 +1,94 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_main.h"
+
+#define OFFSET ( ( MIN_QGAIN_DB * 128 ) / 6 + 16 * 128 )
+#define SCALE_Q16 ( ( 65536 * ( N_LEVELS_QGAIN - 1 ) ) / ( ( ( MAX_QGAIN_DB - MIN_QGAIN_DB ) * 128 ) / 6 ) )
+#define INV_SCALE_Q16 ( ( 65536 * ( ( ( MAX_QGAIN_DB - MIN_QGAIN_DB ) * 128 ) / 6 ) ) / ( N_LEVELS_QGAIN - 1 ) )
+
+/* Gain scalar quantization with hysteresis, uniform on log scale */
+void SKP_Silk_gains_quant(
+ SKP_int ind[ NB_SUBFR ], /* O gain indices */
+ SKP_int32 gain_Q16[ NB_SUBFR ], /* I/O gains (quantized out) */
+ SKP_int *prev_ind, /* I/O last index in previous frame */
+ const SKP_int conditional /* I first gain is delta coded if 1 */
+)
+{
+ SKP_int k;
+
+ for( k = 0; k < NB_SUBFR; k++ ) {
+ /* Add half of previous quantization error, convert to log scale, scale, floor() */
+ ind[ k ] = SKP_SMULWB( SCALE_Q16, SKP_Silk_lin2log( gain_Q16[ k ] ) - OFFSET );
+
+ /* Round towards previous quantized gain (hysteresis) */
+ if( ind[ k ] < *prev_ind ) {
+ ind[ k ]++;
+ }
+
+ /* Compute delta indices and limit */
+ if( k == 0 && conditional == 0 ) {
+ /* Full index */
+ ind[ k ] = SKP_LIMIT( ind[ k ], 0, N_LEVELS_QGAIN - 1 );
+ ind[ k ] = SKP_max_int( ind[ k ], *prev_ind + MIN_DELTA_GAIN_QUANT );
+ *prev_ind = ind[ k ];
+ } else {
+ /* Delta index */
+ ind[ k ] = SKP_LIMIT( ind[ k ] - *prev_ind, MIN_DELTA_GAIN_QUANT, MAX_DELTA_GAIN_QUANT );
+ /* Accumulate deltas */
+ *prev_ind += ind[ k ];
+ /* Shift to make non-negative */
+ ind[ k ] -= MIN_DELTA_GAIN_QUANT;
+ }
+
+ /* Convert to linear scale and scale */
+ gain_Q16[ k ] = SKP_Silk_log2lin( SKP_min_32( SKP_SMULWB( INV_SCALE_Q16, *prev_ind ) + OFFSET, 3967 ) ); /* 3967 = 31 in Q7 */
+ }
+}
+
+/* Gains scalar dequantization, uniform on log scale */
+void SKP_Silk_gains_dequant(
+ SKP_int32 gain_Q16[ NB_SUBFR ], /* O quantized gains */
+ const SKP_int ind[ NB_SUBFR ], /* I gain indices */
+ SKP_int *prev_ind, /* I/O last index in previous frame */
+ const SKP_int conditional /* I first gain is delta coded if 1 */
+)
+{
+ SKP_int k;
+
+ for( k = 0; k < NB_SUBFR; k++ ) {
+ if( k == 0 && conditional == 0 ) {
+ *prev_ind = ind[ k ];
+ } else {
+ /* Delta index */
+ *prev_ind += ind[ k ] + MIN_DELTA_GAIN_QUANT;
+ }
+
+ /* Convert to linear scale and scale */
+ gain_Q16[ k ] = SKP_Silk_log2lin( SKP_min_32( SKP_SMULWB( INV_SCALE_Q16, *prev_ind ) + OFFSET, 3967 ) ); /* 3967 = 31 in Q7 */
+ }
+}
--- /dev/null
+++ b/src/SKP_Silk_init_encoder_FIX.c
@@ -1,0 +1,64 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_main_FIX.h"
+
+/*********************************/
+/* Initialize Silk Encoder state */
+/*********************************/
+SKP_int SKP_Silk_init_encoder_FIX(
+ SKP_Silk_encoder_state_FIX *psEnc /* I/O Pointer to Silk encoder state */
+)
+{
+ SKP_int ret = 0;
+ /* Clear the entire encoder state */
+ SKP_memset( psEnc, 0, sizeof( SKP_Silk_encoder_state_FIX ) );
+
+ /* Initialize to 24 kHz sampling, 20 ms packets, 25 kbps, 0% packet loss, and init non-zero values */
+ ret = SKP_Silk_control_encoder_FIX( psEnc, 24, 20, 25, 0, 0, 0, 10, 1 );
+
+#if HIGH_PASS_INPUT
+ psEnc->variable_HP_smth1_Q15 = 200844; /* = SKP_Silk_log2(70)_Q0; */
+ psEnc->variable_HP_smth2_Q15 = 200844; /* = SKP_Silk_log2(70)_Q0; */
+#endif
+
+ /* Used to deactivate e.g. LSF interpolation and fluctuation reduction */
+ psEnc->sCmn.first_frame_after_reset = 1;
+ psEnc->sCmn.fs_kHz_changed = 0;
+ psEnc->sCmn.LBRR_enabled = 0;
+
+ /* Initialize Silk VAD */
+ ret += SKP_Silk_VAD_Init( &psEnc->sCmn.sVAD );
+
+ /* Initialize NSQ */
+ psEnc->sNSQ.prev_inv_gain_Q16 = 65536; /* 1.0 in Q16 */
+ psEnc->sNSQ_LBRR.prev_inv_gain_Q16 = 65536; /* 1.0 in Q16 */
+
+ psEnc->sCmn.bitstream_v = USE_BIT_STREAM_V;
+
+ return( ret );
+}
--- /dev/null
+++ b/src/SKP_Silk_inner_prod_aligned.c
@@ -1,0 +1,96 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+/* *
+ * SKP_Silk_inner_prod_aligned.c *
+ * *
+ * *
+ * Copyright 2008 (c), Skype Limited *
+ * Date: 080601 *
+ * */
+#include "SKP_Silk_SigProc_FIX.h"
+
+/* sum= for(i=0;i<len;i++)inVec1[i]*inVec2[i]; --- inner product */
+/* Note for ARM asm: */
+/* * inVec1 and inVec2 should be at least 2 byte aligned. (Or defined as short/int16) */
+/* * len should be positive 16bit integer. */
+/* * only when len>6, memory access can be reduced by half. */
+
+SKP_int32 SKP_Silk_inner_prod_aligned(
+ const SKP_int16* const inVec1, /* I input vector 1 */
+ const SKP_int16* const inVec2, /* I input vector 2 */
+ const SKP_int len /* I vector lengths */
+)
+{
+ SKP_int i;
+ SKP_int32 sum = 0;
+ for( i = 0; i < len; i++ ) {
+ sum = SKP_SMLABB( sum, inVec1[ i ], inVec2[ i ] );
+ }
+ return sum;
+}
+
+SKP_int64 SKP_Silk_inner_prod_aligned_64(
+ const SKP_int32 *inVec1, /* I input vector 1 */
+ const SKP_int32 *inVec2, /* I input vector 2 */
+ const SKP_int len /* I vector lengths */
+)
+{
+ SKP_int i;
+ SKP_int64 sum = 0;
+ for( i = 0; i < len; i++ ) {
+ sum = SKP_SMLAL( sum, inVec1[ i ], inVec2[ i ] );
+ }
+ return sum;
+}
+SKP_int64 SKP_Silk_inner_prod16_aligned_64(
+ const SKP_int16 *inVec1, /* I input vector 1 */
+ const SKP_int16 *inVec2, /* I input vector 2 */
+ const SKP_int len /* I vector lengths */
+)
+{
+ SKP_int i;
+ SKP_int64 sum = 0;
+ for( i = 0; i < len; i++ ) {
+ sum = SKP_SMLALBB( sum, inVec1[ i ], inVec2[ i ] );
+ }
+ return sum;
+}
+
+SKP_int32 SKP_Silk_inner_prod16_aligned_sat(
+ const SKP_int16* const inVec1, /* I input vector 1 */
+ const SKP_int16* const inVec2, /* I input vector 2 */
+ const SKP_int len /* I vector lengths */
+)
+{
+ SKP_int i;
+ SKP_int32 sum = 0;
+ for( i = 0; i < len; i++ ) {
+ sum = SKP_ADD_SAT32( sum, SKP_SMULBB( inVec1[ i ], inVec2[ i ] ) );
+ }
+ return sum;
+}
--- /dev/null
+++ b/src/SKP_Silk_interpolate.c
@@ -1,0 +1,47 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_main.h"
+
+/* Interpolate two vectors */
+void SKP_Silk_interpolate(
+ SKP_int xi[ MAX_LPC_ORDER ], /* O interpolated vector */
+ const SKP_int x0[ MAX_LPC_ORDER ], /* I first vector */
+ const SKP_int x1[ MAX_LPC_ORDER ], /* I second vector */
+ const SKP_int ifact_Q2, /* I interp. factor, weight on 2nd vector */
+ const SKP_int d /* I number of parameters */
+)
+{
+ SKP_int i;
+
+ SKP_assert( ifact_Q2 >= 0 );
+ SKP_assert( ifact_Q2 <= ( 1 << 2 ) );
+
+ for( i = 0; i < d; i++ ) {
+ xi[ i ] = ( SKP_int )( ( SKP_int32 )x0[ i ] + SKP_RSHIFT( SKP_MUL( ( SKP_int32 )x1[ i ] - ( SKP_int32 )x0[ i ], ifact_Q2 ), 2 ) );
+ }
+}
--- /dev/null
+++ b/src/SKP_Silk_k2a.c
@@ -1,0 +1,58 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+/* *
+ * SKP_Silk_k2a.c *
+ * *
+ * Step up function, converts reflection coefficients to prediction *
+ * coefficients *
+ * *
+ * Copyright 2008 (c), Skype Limited *
+ * Date: 080103 *
+ * */
+#include "SKP_Silk_SigProc_FIX.h"
+
+/* Step up function, converts reflection coefficients to prediction coefficients */
+void SKP_Silk_k2a(
+ SKP_int32 *A_Q24, /* O: Prediction coefficients [order] Q24 */
+ const SKP_int16 *rc_Q15, /* I: Reflection coefficients [order] Q15 */
+ const SKP_int32 order /* I: Prediction order */
+)
+{
+ SKP_int k, n;
+ SKP_int32 Atmp[ SigProc_MAX_ORDER_LPC ];
+
+ for( k = 0; k < order; k++ ) {
+ for( n = 0; n < k; n++ ) {
+ Atmp[ n ] = A_Q24[ n ];
+ }
+ for( n = 0; n < k; n++ ) {
+ A_Q24[ n ] = SKP_SMLAWB( A_Q24[ n ], SKP_LSHIFT( Atmp[ k - n - 1 ], 1 ), rc_Q15[ k ] );
+ }
+ A_Q24[ k ] = -SKP_LSHIFT( (SKP_int32)rc_Q15[ k ], 9 );
+ }
+}
--- /dev/null
+++ b/src/SKP_Silk_k2a_Q16.c
@@ -1,0 +1,58 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+/* *
+ * SKP_Silk_k2a.c *
+ * *
+ * Step up function, converts reflection coefficients to prediction *
+ * coefficients *
+ * *
+ * Copyright 2008 (c), Skype Limited *
+ * Date: 080103 *
+ * */
+#include "SKP_Silk_SigProc_FIX.h"
+
+/* Step up function, converts reflection coefficients to prediction coefficients */
+void SKP_Silk_k2a_Q16(
+ SKP_int32 *A_Q24, /* O: Prediction coefficients [order] Q24 */
+ const SKP_int32 *rc_Q16, /* I: Reflection coefficients [order] Q16 */
+ const SKP_int32 order /* I: Prediction order */
+)
+{
+ SKP_int k, n;
+ SKP_int32 Atmp[ SigProc_MAX_ORDER_LPC ];
+
+ for( k = 0; k < order; k++ ) {
+ for( n = 0; n < k; n++ ) {
+ Atmp[ n ] = A_Q24[ n ];
+ }
+ for( n = 0; n < k; n++ ) {
+ A_Q24[ n ] = SKP_SMLAWW( A_Q24[ n ], Atmp[ k - n - 1 ], rc_Q16[ k ] );
+ }
+ A_Q24[ k ] = -SKP_LSHIFT( rc_Q16[ k ], 8 );
+ }
+}
--- /dev/null
+++ b/src/SKP_Silk_lin2log.c
@@ -1,0 +1,49 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+/* *
+ * SKP_Silk_lin2log.c *
+ * *
+ * Convert input to a log scale *
+ * Approximation of 128 * log2() *
+ * *
+ * Copyright 2006 (c), Skype Limited *
+ * Date: 060221 *
+ * */
+#include "SKP_Silk_SigProc_FIX.h"
+/* Approximation of 128 * log2() (very close inverse of approx 2^() below) */
+/* Convert input to a log scale */
+SKP_int32 SKP_Silk_lin2log( const SKP_int32 inLin ) /* I: Input in linear scale */
+{
+ SKP_int32 lz, frac_Q7;
+
+ SKP_Silk_CLZ_FRAC( inLin, &lz, &frac_Q7 );
+
+ /* Piece-wise parabolic approximation */
+ return( SKP_LSHIFT( 31 - lz, 7 ) + SKP_SMLAWB( frac_Q7, SKP_MUL( frac_Q7, 128 - frac_Q7 ), 179 ) );
+}
+
--- /dev/null
+++ b/src/SKP_Silk_log2lin.c
@@ -1,0 +1,58 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+/* *
+ * SKP_Silk_log2lin.c *
+ * *
+ * Convert input to a linear scale *
+ * *
+ * Copyright 2006 (c), Skype Limited *
+ * Date: 060221 *
+ * */
+#include "SKP_Silk_SigProc_FIX.h"
+
+/* Approximation of 2^() (very close inverse of SKP_Silk_lin2log()) */
+/* Convert input to a linear scale */
+SKP_int32 SKP_Silk_log2lin( const SKP_int32 inLog_Q7 ) /* I: Input on log scale */
+{
+ SKP_int32 out, frac_Q7;
+
+ if( inLog_Q7 < 0 ) {
+ return 0;
+ }
+
+ out = SKP_LSHIFT( 1, SKP_RSHIFT( inLog_Q7, 7 ) );
+ frac_Q7 = inLog_Q7 & 0x7F;
+ if( inLog_Q7 < 2048 ) {
+ /* Piece-wise parabolic approximation */
+ out = SKP_ADD_RSHIFT( out, SKP_MUL( out, SKP_SMLAWB( frac_Q7, SKP_MUL( frac_Q7, 128 - frac_Q7 ), -174 ) ), 7 );
+ } else {
+ /* Piece-wise parabolic approximation */
+ out = SKP_MLA( out, SKP_RSHIFT( out, 7 ), SKP_SMLAWB( frac_Q7, SKP_MUL( frac_Q7, 128 - frac_Q7 ), -174 ) );
+ }
+ return out;
+}
--- /dev/null
+++ b/src/SKP_Silk_lowpass_int.c
@@ -1,0 +1,61 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+/* *
+ * SKP_Silk_lowpass_int.c *
+ * *
+ * First order low-pass filter, with input as SKP_int32, running at *
+ * 48 kHz *
+ * *
+ * Copyright 2006 (c), Skype Limited *
+ * Date: 060221 *
+ * */
+#include "SKP_Silk_SigProc_FIX.h"
+
+/* First order low-pass filter, with input as SKP_int32, running at 48 kHz */
+void SKP_Silk_lowpass_int(
+ const SKP_int32 *in, /* I: Q25 48 kHz signal; length = len */
+ SKP_int32 *S, /* I/O: Q25 state; length = 1 */
+ SKP_int32 *out, /* O: Q25 48 kHz signal; length = len */
+ const SKP_int32 len /* I: Number of samples */
+)
+{
+ SKP_int k;
+ SKP_int32 in_tmp, out_tmp, state;
+
+ state = S[ 0 ];
+ for( k = len; k > 0; k-- ) {
+ in_tmp = *in++;
+ in_tmp -= SKP_RSHIFT( in_tmp, 2 ); /* multiply by 0.75 */
+ out_tmp = state + in_tmp; /* zero at nyquist */
+ state = in_tmp - SKP_RSHIFT( out_tmp, 1 ); /* pole */
+ *out++ = out_tmp;
+ }
+ S[ 0 ] = state;
+}
+
+
--- /dev/null
+++ b/src/SKP_Silk_lowpass_short.c
@@ -1,0 +1,61 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+/* *
+ * SKP_Silk_lowpass_short.c *
+ * *
+ * First order low-pass filter, with input as SKP_int16, running at *
+ * 48 kHz *
+ * *
+ * Copyright 2006 (c), Skype Limited *
+ * Date: 060221 *
+ * */
+#include "SKP_Silk_SigProc_FIX.h"
+
+
+/* First order low-pass filter, with input as SKP_int16, running at 48 kHz */
+void SKP_Silk_lowpass_short(
+ const SKP_int16 *in, /* I: Q15 48 kHz signal; [len] */
+ SKP_int32 *S, /* I/O: Q25 state; length = 1 */
+ SKP_int32 *out, /* O: Q25 48 kHz signal; [len] */
+ const SKP_int32 len /* O: Signal length */
+)
+{
+ SKP_int k;
+ SKP_int32 in_tmp, out_tmp, state;
+
+ state = S[ 0 ];
+ for( k = 0; k < len; k++ ) {
+ in_tmp = SKP_MUL( 768, (SKP_int32)in[k] ); /* multiply by 0.75, going from Q15 to Q25 */
+ out_tmp = state + in_tmp; /* zero at nyquist */
+ state = in_tmp - SKP_RSHIFT( out_tmp, 1 ); /* pole */
+ out[ k ] = out_tmp;
+ }
+ S[ 0 ] = state;
+}
+
+
--- /dev/null
+++ b/src/SKP_Silk_macros.h
@@ -1,0 +1,122 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#ifndef _SKP_SILK_API_C_H_
+#define _SKP_SILK_API_C_H_
+
+// This is an inline header file for general platform.
+
+// (a32 * (SKP_int32)((SKP_int16)(b32))) >> 16 output have to be 32bit int
+#define SKP_SMULWB(a32, b32) ((((a32) >> 16) * (SKP_int32)((SKP_int16)(b32))) + ((((a32) & 0x0000FFFF) * (SKP_int32)((SKP_int16)(b32))) >> 16))
+
+// a32 + (b32 * (SKP_int32)((SKP_int16)(c32))) >> 16 output have to be 32bit int
+#define SKP_SMLAWB(a32, b32, c32) ((a32) + ((((b32) >> 16) * (SKP_int32)((SKP_int16)(c32))) + ((((b32) & 0x0000FFFF) * (SKP_int32)((SKP_int16)(c32))) >> 16)))
+
+// (a32 * (b32 >> 16)) >> 16
+#define SKP_SMULWT(a32, b32) (((a32) >> 16) * ((b32) >> 16) + ((((a32) & 0x0000FFFF) * ((b32) >> 16)) >> 16))
+
+// a32 + (b32 * (c32 >> 16)) >> 16
+#define SKP_SMLAWT(a32, b32, c32) ((a32) + (((b32) >> 16) * ((c32) >> 16)) + ((((b32) & 0x0000FFFF) * ((c32) >> 16)) >> 16))
+
+// (SKP_int32)((SKP_int16)(a3))) * (SKP_int32)((SKP_int16)(b32)) output have to be 32bit int
+#define SKP_SMULBB(a32, b32) ((SKP_int32)((SKP_int16)(a32)) * (SKP_int32)((SKP_int16)(b32)))
+
+// a32 + (SKP_int32)((SKP_int16)(b32)) * (SKP_int32)((SKP_int16)(c32)) output have to be 32bit int
+#define SKP_SMLABB(a32, b32, c32) ((a32) + ((SKP_int32)((SKP_int16)(b32))) * (SKP_int32)((SKP_int16)(c32)))
+
+// (SKP_int32)((SKP_int16)(a32)) * (b32 >> 16)
+#define SKP_SMULBT(a32, b32) ((SKP_int32)((SKP_int16)(a32)) * ((b32) >> 16))
+
+// a32 + (SKP_int32)((SKP_int16)(b32)) * (c32 >> 16)
+#define SKP_SMLABT(a32, b32, c32) ((a32) + ((SKP_int32)((SKP_int16)(b32))) * ((c32) >> 16))
+
+// a64 + (b32 * c32)
+#define SKP_SMLAL(a64, b32, c32) (SKP_ADD64((a64), ((SKP_int64)(b32) * (SKP_int64)(c32))))
+
+// (a32 * b32) >> 16
+#define SKP_SMULWW(a32, b32) SKP_MLA(SKP_SMULWB((a32), (b32)), (a32), SKP_RSHIFT_ROUND((b32), 16))
+
+// a32 + ((b32 * c32) >> 16)
+#define SKP_SMLAWW(a32, b32, c32) SKP_MLA(SKP_SMLAWB((a32), (b32), (c32)), (b32), SKP_RSHIFT_ROUND((c32), 16))
+
+/* add/subtract with output saturated */
+#define SKP_ADD_SAT32(a, b) ((((a) + (b)) & 0x80000000) == 0 ? \
+ ((((a) & (b)) & 0x80000000) != 0 ? SKP_int32_MIN : (a)+(b)) : \
+ ((((a) | (b)) & 0x80000000) == 0 ? SKP_int32_MAX : (a)+(b)) )
+
+#define SKP_SUB_SAT32(a, b) ((((a)-(b)) & 0x80000000) == 0 ? \
+ (( (a) & ((b)^0x80000000) & 0x80000000) ? SKP_int32_MIN : (a)-(b)) : \
+ ((((a)^0x80000000) & (b) & 0x80000000) ? SKP_int32_MAX : (a)-(b)) )
+
+SKP_INLINE SKP_int32 SKP_Silk_CLZ16(SKP_int16 in16)
+{
+ SKP_int32 out32 = 0;
+ if( in16 == 0 ) {
+ return 16;
+ }
+ /* test nibbles */
+ if( in16 & 0xFF00 ) {
+ if( in16 & 0xF000 ) {
+ in16 >>= 12;
+ } else {
+ out32 += 4;
+ in16 >>= 8;
+ }
+ } else {
+ if( in16 & 0xFFF0 ) {
+ out32 += 8;
+ in16 >>= 4;
+ } else {
+ out32 += 12;
+ }
+ }
+ /* test bits and return */
+ if( in16 & 0xC ) {
+ if( in16 & 0x8 )
+ return out32 + 0;
+ else
+ return out32 + 1;
+ } else {
+ if( in16 & 0xE )
+ return out32 + 2;
+ else
+ return out32 + 3;
+ }
+}
+
+SKP_INLINE SKP_int32 SKP_Silk_CLZ32(SKP_int32 in32)
+{
+ /* test highest 16 bits and convert to SKP_int16 */
+ if( in32 & 0xFFFF0000 ) {
+ return SKP_Silk_CLZ16((SKP_int16)(in32 >> 16));
+ } else {
+ return SKP_Silk_CLZ16((SKP_int16)in32) + 16;
+ }
+}
+
+#endif //_SKP_SILK_API_C_H_
+
--- /dev/null
+++ b/src/SKP_Silk_main.h
@@ -1,0 +1,405 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#ifndef SKP_SILK_MAIN_H
+#define SKP_SILK_MAIN_H
+
+#include "SKP_Silk_SigProc_FIX.h"
+#include "SKP_Silk_define.h"
+#include "SKP_Silk_structs.h"
+#include "SKP_Silk_tables.h"
+#include "SKP_Silk_PLC.h"
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+/* Encodes signs of excitation */
+void SKP_Silk_encode_signs(
+ SKP_Silk_range_coder_state *psRC, /* I/O Range coder state */
+ const SKP_int q[], /* I pulse signal */
+ const SKP_int length, /* I length of input */
+ const SKP_int sigtype, /* I Signal type */
+ const SKP_int QuantOffsetType, /* I Quantization offset type */
+ const SKP_int RateLevelIndex /* I Rate Level Index */
+);
+
+/* Decodes signs of excitation */
+void SKP_Silk_decode_signs(
+ SKP_Silk_range_coder_state *psRC, /* I/O Range coder state */
+ SKP_int q[], /* I/O pulse signal */
+ const SKP_int length, /* I length of output */
+ const SKP_int sigtype, /* I Signal type */
+ const SKP_int QuantOffsetType, /* I Quantization offset type */
+ const SKP_int RateLevelIndex /* I Rate Level Index */
+);
+
+/***************/
+/* Shell coder */
+/***************/
+
+/* Encode quantization indices of excitation */
+void SKP_Silk_encode_pulses(
+ SKP_Silk_range_coder_state *psRC, /* I/O Range coder state */
+ const SKP_int sigtype, /* I Sigtype */
+ const SKP_int QuantOffsetType, /* I QuantOffsetType */
+ const SKP_int q[], /* I quantization indices */
+ const SKP_int frame_length /* I Frame length */
+);
+
+/* Shell encoder, operates on one shell code frame of 16 pulses */
+void SKP_Silk_shell_encoder(
+ SKP_Silk_range_coder_state *psRC, /* I/O compressor data structure */
+ const SKP_int *pulses0 /* I data: nonnegative pulse amplitudes */
+);
+
+/* Shell decoder, operates on one shell code frame of 16 pulses */
+void SKP_Silk_shell_decoder(
+ SKP_int *pulses0, /* O data: nonnegative pulse amplitudes */
+ SKP_Silk_range_coder_state *psRC, /* I/O compressor data structure */
+ const SKP_int pulses4 /* I number of pulses per pulse-subframe */
+);
+
+/***************/
+/* Range coder */
+/***************/
+/* Range encoder for one symbol */
+void SKP_Silk_range_encoder(
+ SKP_Silk_range_coder_state *psRC, /* I/O compressor data structure */
+ const SKP_int data, /* I uncompressed data */
+ const SKP_uint16 prob[] /* I cumulative density functions */
+);
+
+/* Range encoder for multiple symbols */
+void SKP_Silk_range_encoder_multi(
+ SKP_Silk_range_coder_state *psRC, /* I/O compressor data structure */
+ const SKP_int data[], /* I uncompressed data [nSymbols] */
+ const SKP_uint16 * const prob[], /* I cumulative density functions */
+ const SKP_int nSymbols /* I number of data symbols */
+);
+
+/* Range decoder for one symbol */
+void SKP_Silk_range_decoder(
+ SKP_int data[], /* O uncompressed data */
+ SKP_Silk_range_coder_state *psRC, /* I/O compressor data structure */
+ const SKP_uint16 prob[], /* I cumulative density function */
+ SKP_int probIx /* I initial (middle) entry of cdf */
+);
+
+/* Range decoder for multiple symbols */
+void SKP_Silk_range_decoder_multi(
+ SKP_int data[], /* O uncompressed data [nSymbols] */
+ SKP_Silk_range_coder_state *psRC, /* I/O compressor data structure */
+ const SKP_uint16 * const prob[], /* I cumulative density functions */
+ const SKP_int probStartIx[], /* I initial (middle) entries of cdfs [nSymbols] */
+ const SKP_int nSymbols /* I number of data symbols */
+);
+
+/* Initialize range coder structure for encoder */
+void SKP_Silk_range_enc_init(
+ SKP_Silk_range_coder_state *psRC /* O compressor data structure */
+);
+
+/* Initialize range coder structure for decoder */
+void SKP_Silk_range_dec_init(
+ SKP_Silk_range_coder_state *psRC, /* O compressor data structure */
+ const SKP_uint8 buffer[], /* I buffer for compressed data [bufferLength] */
+ const SKP_int32 bufferLength /* I buffer length (in bytes) */
+);
+
+/* Determine length of bitstream */
+SKP_int SKP_Silk_range_coder_get_length( /* O returns number of BITS in stream */
+ const SKP_Silk_range_coder_state *psRC, /* I compressed data structure */
+ SKP_int *nBytes /* O number of BYTES in stream */
+);
+
+/* Write decodable stream to buffer, and determine its length */
+void SKP_Silk_range_enc_wrap_up(
+ SKP_Silk_range_coder_state *psRC /* I/O compressed data structure */
+);
+
+/* Check that any remaining bits in the last byte are set to 1 */
+void SKP_Silk_range_coder_check_after_decoding(
+ SKP_Silk_range_coder_state *psRC /* I/O compressed data structure */
+);
+
+/* Gain scalar quantization with hysteresis, uniform on log scale */
+void SKP_Silk_gains_quant(
+ SKP_int ind[ NB_SUBFR ], /* O gain indices */
+ SKP_int32 gain_Q16[ NB_SUBFR ], /* I/O gains (quantized out) */
+ SKP_int *prev_ind, /* I/O last index in previous frame */
+ const SKP_int conditional /* I first gain is delta coded if 1 */
+);
+
+/* Gains scalar dequantization, uniform on log scale */
+void SKP_Silk_gains_dequant(
+ SKP_int32 gain_Q16[ NB_SUBFR ], /* O quantized gains */
+ const SKP_int ind[ NB_SUBFR ], /* I gain indices */
+ SKP_int *prev_ind, /* I/O last index in previous frame */
+ const SKP_int conditional /* I first gain is delta coded if 1 */
+);
+
+/* Convert NLSF parameters to stable AR prediction filter coefficients */
+void SKP_Silk_NLSF2A_stable(
+ SKP_int16 pAR_Q12[ MAX_LPC_ORDER ], /* O Stabilized AR coefs [LPC_order] */
+ const SKP_int pNLSF[ MAX_LPC_ORDER ], /* I NLSF vector [LPC_order] */
+ const SKP_int LPC_order /* I LPC/LSF order */
+);
+
+/* Interpolate two vectors */
+void SKP_Silk_interpolate(
+ SKP_int xi[ MAX_LPC_ORDER ], /* O interpolated vector */
+ const SKP_int x0[ MAX_LPC_ORDER ], /* I first vector */
+ const SKP_int x1[ MAX_LPC_ORDER ], /* I second vector */
+ const SKP_int ifact_Q2, /* I interp. factor, weight on 2nd vector */
+ const SKP_int d /* I number of parameters */
+);
+
+/***********************************/
+/* Noise shaping quantization (NSQ)*/
+/***********************************/
+void SKP_Silk_NSQ(
+ SKP_Silk_encoder_state *psEncC, /* I/O Encoder State */
+ SKP_Silk_encoder_control *psEncCtrlC, /* I Encoder Control */
+ SKP_Silk_nsq_state *NSQ, /* I/O NSQ state */
+ const SKP_int16 x[], /* I prefiltered input signal */
+ SKP_int q[], /* O quantized qulse signal */
+ const SKP_int LSFInterpFactor_Q2, /* I LSF interpolation factor in Q2 */
+ const SKP_int16 PredCoef_Q12[ 2 * MAX_LPC_ORDER ], /* I Short term prediction coefficients */
+ const SKP_int16 LTPCoef_Q14[ LTP_ORDER * NB_SUBFR ], /* I Long term prediction coefficients */
+ const SKP_int16 AR2_Q13[ NB_SUBFR * SHAPE_LPC_ORDER_MAX ], /* I */
+ const SKP_int HarmShapeGain_Q14[ NB_SUBFR ], /* I */
+ const SKP_int Tilt_Q14[ NB_SUBFR ], /* I Spectral tilt */
+ const SKP_int32 LF_shp_Q14[ NB_SUBFR ], /* I */
+ const SKP_int32 Gains_Q16[ NB_SUBFR ], /* I */
+ const SKP_int Lambda_Q10, /* I */
+ const SKP_int LTP_scale_Q14 /* I LTP state scaling */
+);
+
+/* Noise shaping using delayed decision */
+void SKP_Silk_NSQ_del_dec(
+ SKP_Silk_encoder_state *psEncC, /* I/O Encoder State */
+ SKP_Silk_encoder_control *psEncCtrlC, /* I Encoder Control */
+ SKP_Silk_nsq_state *NSQ, /* I/O NSQ state */
+ const SKP_int16 x[], /* I Prefiltered input signal */
+ SKP_int q[], /* O Quantized pulse signal */
+ const SKP_int LSFInterpFactor_Q2, /* I LSF interpolation factor in Q2 */
+ const SKP_int16 PredCoef_Q12[ 2 * MAX_LPC_ORDER ], /* I Prediction coefs */
+ const SKP_int16 LTPCoef_Q14[ LTP_ORDER * NB_SUBFR ], /* I LT prediction coefs */
+ const SKP_int16 AR2_Q13[ NB_SUBFR * SHAPE_LPC_ORDER_MAX ], /* I */
+ const SKP_int HarmShapeGain_Q14[ NB_SUBFR ], /* I */
+ const SKP_int Tilt_Q14[ NB_SUBFR ], /* I Spectral tilt */
+ const SKP_int32 LF_shp_Q14[ NB_SUBFR ], /* I */
+ const SKP_int32 Gains_Q16[ NB_SUBFR ], /* I */
+ const SKP_int Lambda_Q10, /* I */
+ const SKP_int LTP_scale_Q14 /* I LTP state scaling */
+);
+
+/************/
+/* Silk VAD */
+/************/
+/* Initialize the Silk VAD */
+SKP_int SKP_Silk_VAD_Init( /* O Return value, 0 if success */
+ SKP_Silk_VAD_state *psSilk_VAD /* I/O Pointer to Silk VAD state */
+);
+
+/* Silk VAD noise level estimation */
+void SKP_Silk_VAD_GetNoiseLevels(
+ const SKP_int32 pX[ VAD_N_BANDS ], /* I subband energies */
+ SKP_Silk_VAD_state *psSilk_VAD /* I/O Pointer to Silk VAD state */
+);
+
+/* Get speech activity level in Q8 */
+SKP_int SKP_Silk_VAD_GetSA_Q8( /* O Return value, 0 if success */
+ SKP_Silk_VAD_state *psSilk_VAD, /* I/O Silk VAD state */
+ SKP_int *pSA_Q8, /* O Speech activity level in Q8 */
+ SKP_int *pSNR_dB_Q7, /* O SNR for current frame in Q7 */
+ SKP_int pQuality_Q15[ VAD_N_BANDS ], /* O Smoothed SNR for each band */
+ SKP_int *pTilt_Q15, /* O current frame's frequency tilt */
+ const SKP_int16 pIn[], /* I PCM input [framelength] */
+ const SKP_int framelength /* I Input frame length */
+);
+
+/* Detect signal in 8 - 12 khz range */
+void SKP_Silk_detect_SWB_input(
+ SKP_Silk_detect_SWB_state *psSWBdetect, /* I/O Encoder state */
+ const SKP_int16 samplesIn[], /* I Input to encoder */
+ SKP_int nSamplesIn /* I Length of input */
+);
+
+#if SWITCH_TRANSITION_FILTERING
+/* Low-pass filter with variable cutoff frequency based on */
+/* piece-wise linear interpolation between elliptic filters */
+/* Start by setting transition_frame_no = 1; */
+void SKP_Silk_LP_variable_cutoff(
+ SKP_Silk_LP_state *psLP, /* I/O LP filter state */
+ SKP_int16 *out, /* O Low-pass filtered output signal */
+ const SKP_int16 *in, /* I Input signal */
+ const SKP_int frame_length /* I Frame length */
+);
+#endif
+
+/****************************************************/
+/* Decoder Functions */
+/****************************************************/
+SKP_int SKP_Silk_create_decoder(
+ SKP_Silk_decoder_state **ppsDec /* I/O Decoder state pointer pointer */
+);
+
+SKP_int SKP_Silk_free_decoder(
+ SKP_Silk_decoder_state *psDec /* I/O Decoder state pointer */
+);
+
+SKP_int SKP_Silk_init_decoder(
+ SKP_Silk_decoder_state *psDec /* I/O Decoder state pointer */
+);
+
+/* Set decoder sampling rate */
+void SKP_Silk_decoder_set_fs(
+ SKP_Silk_decoder_state *psDec, /* I/O Decoder state pointer */
+ SKP_int fs_kHz /* I Sampling frequency (kHz) */
+);
+
+/****************/
+/* Decode frame */
+/****************/
+SKP_int SKP_Silk_decode_frame(
+ SKP_Silk_decoder_state *psDec, /* I/O Pointer to Silk decoder state */
+ SKP_int16 pOut[], /* O Pointer to output speech frame */
+ SKP_int16 *pN, /* O Pointer to size of output frame */
+ const SKP_uint8 pCode[], /* I Pointer to payload */
+ const SKP_int nBytes, /* I Payload length */
+ SKP_int action, /* I Action from Jitter Buffer */
+ SKP_int *decBytes /* O Used bytes to decode this frame */
+);
+
+/* Decode parameters from payload */
+void SKP_Silk_decode_parameters(
+ SKP_Silk_decoder_state *psDec, /* I/O State */
+ SKP_Silk_decoder_control *psDecCtrl, /* I/O Decoder control */
+ SKP_int q[], /* O Excitation signal */
+ const SKP_int fullDecoding /* I Flag to tell if only arithmetic decoding */
+);
+
+/* Decode indices from payload v4 Bitstream */
+void SKP_Silk_decode_indices_v4(
+ SKP_Silk_decoder_state *psDec /* I/O State */
+);
+
+/* Decode parameters from payload v4 Bitstream */
+void SKP_Silk_decode_parameters_v4(
+ SKP_Silk_decoder_state *psDec, /* I/O State */
+ SKP_Silk_decoder_control *psDecCtrl, /* I/O Decoder control */
+ SKP_int q[ MAX_FRAME_LENGTH ], /* O Excitation signal */
+ const SKP_int fullDecoding /* I Flag to tell if only arithmetic decoding */
+);
+
+/* Core decoder. Performs inverse NSQ operation LTP + LPC */
+void SKP_Silk_decode_core(
+ SKP_Silk_decoder_state *psDec, /* I/O Decoder state */
+ SKP_Silk_decoder_control *psDecCtrl, /* I Decoder control */
+ SKP_int16 xq[], /* O Decoded speech */
+ const SKP_int q[ MAX_FRAME_LENGTH ] /* I Pulse signal */
+);
+
+/* NLSF vector decoder */
+void SKP_Silk_NLSF_MSVQ_decode(
+ SKP_int *pNLSF_Q15, /* O Pointer to decoded output [LPC_ORDER x 1] */
+ const SKP_Silk_NLSF_CB_struct *psNLSF_CB, /* I Pointer to NLSF codebook struct */
+ const SKP_int *NLSFIndices, /* I Pointer to NLSF indices [nStages x 1] */
+ const SKP_int LPC_order /* I LPC order */
+);
+
+/**********************/
+/* Arithmetic coding */
+/*********************/
+
+/* Decode quantization indices of excitation (Shell coding) */
+void SKP_Silk_decode_pulses(
+ SKP_Silk_range_coder_state *psRC, /* I/O Range coder state */
+ SKP_Silk_decoder_control *psDecCtrl, /* I/O Decoder control */
+ SKP_int q[], /* O Excitation signal */
+ const SKP_int frame_length /* I Frame length (preliminary) */
+);
+
+/******************/
+/* CNG */
+/******************/
+
+/* Reset CNG */
+void SKP_Silk_CNG_Reset(
+ SKP_Silk_decoder_state *psDec /* I/O Decoder state */
+);
+
+/* Updates CNG estimate, and applies the CNG when packet was lost */
+void SKP_Silk_CNG(
+ SKP_Silk_decoder_state *psDec, /* I/O Decoder state */
+ SKP_Silk_decoder_control *psDecCtrl, /* I/O Decoder control */
+ SKP_int16 signal[], /* I/O Signal */
+ SKP_int length /* I Length of residual */
+);
+
+/* Encoding of various parameters */
+void SKP_Silk_encode_parameters(
+ SKP_Silk_encoder_state *psEncC, /* I/O Encoder state */
+ SKP_Silk_encoder_control *psEncCtrlC, /* I/O Encoder control */
+ SKP_Silk_range_coder_state *psRC, /* I/O Range coder state */
+ const SKP_int *q /* I Quantization indices */
+);
+
+/* Encoding of various parameters */
+void SKP_Silk_encode_parameters_v4(
+ SKP_Silk_encoder_state *psEncC, /* I/O Encoder state */
+ SKP_Silk_encoder_control *psEncCtrlC, /* I/O Encoder control */
+ SKP_Silk_range_coder_state *psRC /* I/O Range encoder state */
+);
+
+/* Extract lowest layer encoding */
+void SKP_Silk_get_low_layer_internal(
+ const SKP_uint8 *indata, /* I: Encoded input vector */
+ const SKP_int16 nBytesIn, /* I: Number of input Bytes */
+ SKP_uint8 *Layer0data, /* O: Layer0 payload */
+ SKP_int16 *nLayer0Bytes /* O: Number of FEC Bytes */
+);
+
+/* Resets LBRR buffer, used if packet size changes */
+void SKP_Silk_LBRR_reset(
+ SKP_Silk_encoder_state *psEncC /* I/O Pointer to Silk encoder state */
+);
+
+/* Predict number of bytes used to encode q */
+SKP_int SKP_Silk_pulses_to_bytes( /* O Return value, predicted number of bytes used to encode q */
+ SKP_Silk_encoder_state *psEncC, /* I/O Encoder State*/
+ SKP_int q[] /* I Pulse signal */
+);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
--- /dev/null
+++ b/src/SKP_Silk_main_FIX.h
@@ -1,0 +1,324 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#ifndef SKP_SILK_MAIN_FIX_H
+#define SKP_SILK_MAIN_FIX_H
+
+#include <stdlib.h>
+#include "SKP_Silk_SigProc_FIX.h"
+#include "SKP_Silk_structs_FIX.h"
+#include "SKP_Silk_main.h"
+#include "SKP_Silk_define_FIX.h"
+#include "SKP_Silk_PLC.h"
+#define TIC(TAG_NAME)
+#define TOC(TAG_NAME)
+
+#ifndef FORCE_CPP_BUILD
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+#endif
+
+/*********************/
+/* Encoder Functions */
+/*********************/
+
+/* Initializes the Silk encoder state */
+SKP_int SKP_Silk_init_encoder_FIX(
+ SKP_Silk_encoder_state_FIX *psEnc /* I/O Pointer to Silk FIX encoder state */
+);
+
+/* Control the Silk encoder */
+SKP_int SKP_Silk_control_encoder_FIX(
+ SKP_Silk_encoder_state_FIX *psEnc, /* I/O Pointer to Silk FIX encoder state */
+ const SKP_int API_fs_kHz, /* I External (API) sampling rate (kHz) */
+ const SKP_int PacketSize_ms, /* I Packet length (ms) */
+ SKP_int32 TargetRate_bps, /* I Target max bitrate (bps) (used if SNR_dB == 0) */
+ const SKP_int PacketLoss_perc, /* I Packet loss rate (in percent) */
+ const SKP_int INBandFec_enabled, /* I Enable (1) / disable (0) inband FEC */
+ const SKP_int DTX_enabled, /* I Enable / disable DTX */
+ const SKP_int InputFramesize_ms, /* I Inputframe in ms */
+ const SKP_int Complexity /* I Complexity (0->low; 1->medium; 2->high) */
+);
+
+/* Encoder main function */
+SKP_int SKP_Silk_encode_frame_FIX(
+ SKP_Silk_encoder_state_FIX *psEnc, /* I/O Pointer to Silk FIX encoder state */
+ SKP_uint8 *pCode, /* O Pointer to payload */
+ SKP_int16 *pnBytesOut, /* I/O Pointer to number of payload bytes; */
+ /* input: max length; output: used */
+ const SKP_int16 *pIn /* I Pointer to input speech frame */
+);
+
+/* Low BitRate Redundancy encoding functionality. Reuse all parameters but encode with lower bitrate */
+void SKP_Silk_LBRR_encode_FIX(
+ SKP_Silk_encoder_state_FIX *psEnc, /* I/O Pointer to Silk FIX encoder state */
+ SKP_Silk_encoder_control_FIX *psEncCtrl, /* I/O Pointer to Silk FIX encoder control struct */
+ SKP_uint8 *pCode, /* O Pointer to payload */
+ SKP_int16 *pnBytesOut, /* I/O Pointer to number of payload bytes */
+ SKP_int16 xfw[] /* I Input signal */
+);
+
+/* High-pass filter with cutoff frequency adaptation based on pitch lag statistics */
+void SKP_Silk_HP_variable_cutoff_FIX(
+ SKP_Silk_encoder_state_FIX *psEnc, /* I/O Encoder state */
+ SKP_Silk_encoder_control_FIX *psEncCtrl, /* I/O Encoder control */
+ SKP_int16 *out, /* O high-pass filtered output signal */
+ const SKP_int16 *in /* I input signal */
+);
+
+/****************/
+/* Prefiltering */
+/****************/
+void SKP_Silk_prefilter_FIX(
+ SKP_Silk_encoder_state_FIX *psEnc, /* I/O Encoder state */
+ const SKP_Silk_encoder_control_FIX *psEncCtrl, /* I Encoder control */
+ SKP_int16 xw[], /* O Weighted signal */
+ const SKP_int16 x[] /* I Speech signal */
+);
+
+/**************************************************************/
+/* Compute noise shaping coefficients and initial gain values */
+/**************************************************************/
+void SKP_Silk_noise_shape_analysis_FIX(
+ SKP_Silk_encoder_state_FIX *psEnc, /* I/O Encoder state */
+ SKP_Silk_encoder_control_FIX *psEncCtrl, /* I/O Encoder control */
+ const SKP_int16 *pitch_res, /* I LPC residual from pitch analysis */
+ const SKP_int16 *x /* I Input signal [ 2 * frame_length + la_shape ]*/
+);
+
+/* Processing of gains */
+void SKP_Silk_process_gains_FIX(
+ SKP_Silk_encoder_state_FIX *psEnc, /* I/O Encoder state */
+ SKP_Silk_encoder_control_FIX *psEncCtrl /* I/O Encoder control */
+);
+
+
+/* Control low bitrate redundancy usage */
+void SKP_Silk_LBRR_ctrl_FIX(
+ SKP_Silk_encoder_state_FIX *psEnc, /* I/O encoder state */
+ SKP_Silk_encoder_control_FIX *psEncCtrl /* I/O encoder control */
+);
+
+/* Calculation of LTP state scaling */
+void SKP_Silk_LTP_scale_ctrl_FIX(
+ SKP_Silk_encoder_state_FIX *psEnc, /* I/O encoder state */
+ SKP_Silk_encoder_control_FIX *psEncCtrl /* I/O encoder control */
+);
+
+/**********************************************/
+/* Prediction Analysis */
+/**********************************************/
+
+/* Find pitch lags */
+void SKP_Silk_find_pitch_lags_FIX(
+ SKP_Silk_encoder_state_FIX *psEnc, /* I/O encoder state */
+ SKP_Silk_encoder_control_FIX *psEncCtrl, /* I/O encoder control */
+ SKP_int16 res[], /* O residual */
+ const SKP_int16 x[] /* I Speech signal */
+);
+
+void SKP_Silk_find_pred_coefs_FIX(
+ SKP_Silk_encoder_state_FIX *psEnc, /* I/O encoder state */
+ SKP_Silk_encoder_control_FIX *psEncCtrl, /* I/O encoder control */
+ const SKP_int16 res_pitch[] /* I Residual from pitch analysis */
+);
+
+void SKP_Silk_find_LPC_FIX(
+ SKP_int NLSF_Q15[], /* O LSFs */
+ SKP_int *interpIndex, /* O LSF interpolation index, only used for LSF interpolation */
+ const SKP_int prev_NLSFq_Q15[], /* I previous LSFs, only used for LSF interpolation */
+ const SKP_int useInterpolatedLSFs, /* I Flag */
+ const SKP_int LPC_order, /* I LPC order */
+ const SKP_int16 x[], /* I Input signal */
+ const SKP_int subfr_length /* I Input signal subframe length including preceeding samples */
+);
+
+void SKP_Silk_LTP_analysis_filter_FIX(
+ SKP_int16 *LTP_res, /* O: LTP residual signal of length NB_SUBFR * ( pre_length + subfr_length ) */
+ const SKP_int16 *x, /* I: Pointer to input signal with at least max( pitchL ) preceeding samples */
+ const SKP_int16 LTPCoef_Q14[ LTP_ORDER * NB_SUBFR ],/* I: LTP_ORDER LTP coefficients for each NB_SUBFR subframe */
+ const SKP_int pitchL[ NB_SUBFR ], /* I: Pitch lag, one for each subframe */
+ const SKP_int32 invGains_Qxx[ NB_SUBFR ], /* I: Inverse quantization gains, one for each subframe */
+ const SKP_int Qxx, /* I: Inverse quantization gains Q domain */
+ const SKP_int subfr_length, /* I: Length of each subframe */
+ const SKP_int pre_length /* I: Length of the preceeding samples starting at &x[0] for each subframe */
+);
+
+/* Finds LTP vector from correlations */
+void SKP_Silk_find_LTP_FIX(
+ SKP_int16 b_Q14[ NB_SUBFR * LTP_ORDER ], /* O LTP coefs */
+ SKP_int32 WLTP[ NB_SUBFR * LTP_ORDER * LTP_ORDER ], /* O Weight for LTP quantization */
+ SKP_int *LTPredCodGain_Q7, /* O LTP coding gain */
+ const SKP_int16 r_first[], /* I residual signal after LPC signal + state for first 10 ms */
+ const SKP_int16 r_last[], /* I residual signal after LPC signal + state for last 10 ms */
+ const SKP_int lag[ NB_SUBFR ], /* I LTP lags */
+ const SKP_int32 Wght_Q15[ NB_SUBFR ], /* I weights */
+ const SKP_int subfr_length, /* I subframe length */
+ const SKP_int mem_offset, /* I number of samples in LTP memory */
+ SKP_int corr_rshifts[ NB_SUBFR ] /* O right shifts applied to correlations */
+);
+
+/* LTP tap quantizer */
+void SKP_Silk_quant_LTP_gains_FIX(
+ SKP_int16 B_Q14[], /* I/O (un)quantized LTP gains */
+ SKP_int cbk_index[], /* O Codebook Index */
+ SKP_int *periodicity_index, /* O Periodicity Index */
+ const SKP_int32 W_Q18[], /* I Error Weights in Q18 */
+ SKP_int mu_Q8, /* I Mu value (R/D tradeoff) */
+ SKP_int lowComplexity /* I Flag for low complexity */
+);
+
+/******************/
+/* NLSF Quantizer */
+/******************/
+
+/* Limit, stabilize, convert and quantize NLSFs. */
+void SKP_Silk_process_NLSFs_FIX(
+ SKP_Silk_encoder_state_FIX *psEnc, /* I/O encoder state */
+ SKP_Silk_encoder_control_FIX *psEncCtrl, /* I/O encoder control */
+ SKP_int *pNLSF_Q15 /* I/O Normalized LSFs (quant out) (0 - (2^15-1)) */
+);
+
+/* LSF vector encoder */
+void SKP_Silk_NLSF_MSVQ_encode_FIX(
+ SKP_int *NLSFIndices, /* O Codebook path vector [ CB_STAGES ] */
+ SKP_int *pNLSF_Q15, /* I/O Quantized NLSF vector [ LPC_ORDER ] */
+ const SKP_Silk_NLSF_CB_struct *psNLSF_CB, /* I Codebook object */
+ const SKP_int *pNLSF_q_Q15_prev, /* I Prev. quantized NLSF vector [LPC_ORDER] */
+ const SKP_int *pW_Q6, /* I NLSF weight vector [ LPC_ORDER ] */
+ const SKP_int NLSF_mu_Q15, /* I Rate weight for the RD optimization */
+ const SKP_int NLSF_mu_fluc_red_Q16, /* I Fluctuation reduction error weight */
+ const SKP_int NLSF_MSVQ_Survivors, /* I Max survivors from each stage */
+ const SKP_int LPC_order, /* I LPC order */
+ const SKP_int deactivate_fluc_red /* I Deactivate fluctuation reduction */
+);
+
+/* Rate-Distortion calculations for multiple input data vectors */
+void SKP_Silk_NLSF_VQ_rate_distortion_FIX(
+ SKP_int32 *pRD_Q20, /* O Rate-distortion values [psNLSF_CBS->nVectors*N] */
+ const SKP_Silk_NLSF_CBS *psNLSF_CBS, /* I NLSF codebook stage struct */
+ const SKP_int *in_Q15, /* I Input vectors to be quantized */
+ const SKP_int *w_Q6, /* I Weight vector */
+ const SKP_int32 *rate_acc_Q5, /* I Accumulated rates from previous stage */
+ const SKP_int mu_Q15, /* I Weight between weighted error and rate */
+ const SKP_int N, /* I Number of input vectors to be quantized */
+ const SKP_int LPC_order /* I LPC order */
+);
+
+/* Compute weighted quantization errors for an LPC_order element input vector, over one codebook stage */
+void SKP_Silk_NLSF_VQ_sum_error_FIX(
+ SKP_int32 *err_Q20, /* O Weighted quantization errors [N*K] */
+ const SKP_int *in_Q15, /* I Input vectors to be quantized [N*LPC_order] */
+ const SKP_int *w_Q6, /* I Weighting vectors [N*LPC_order] */
+ const SKP_int16 *pCB_Q15, /* I Codebook vectors [K*LPC_order] */
+ const SKP_int N, /* I Number of input vectors */
+ const SKP_int K, /* I Number of codebook vectors */
+ const SKP_int LPC_order /* I Number of LPCs */
+);
+
+/* Entropy constrained MATRIX-weighted VQ, for a single input data vector */
+void SKP_Silk_VQ_WMat_EC_FIX(
+ SKP_int *ind, /* O index of best codebook vector */
+ SKP_int32 *rate_dist_Q14, /* O best weighted quantization error + mu * rate*/
+ const SKP_int16 *in_Q14, /* I input vector to be quantized */
+ const SKP_int32 *W_Q18, /* I weighting matrix */
+ const SKP_int16 *cb_Q14, /* I codebook */
+ const SKP_int16 *cl_Q6, /* I code length for each codebook vector */
+ const SKP_int mu_Q8, /* I tradeoff between weighted error and rate */
+ SKP_int L /* I number of vectors in codebook */
+);
+
+/******************/
+/* Linear Algebra */
+/******************/
+
+/* Calculates correlation matrix X'*X */
+void SKP_Silk_corrMatrix_FIX(
+ const SKP_int16 *x, /* I x vector [L + order - 1] used to form data matrix X */
+ const SKP_int L, /* I Length of vectors */
+ const SKP_int order, /* I Max lag for correlation */
+ SKP_int32 *XX, /* O Pointer to X'*X correlation matrix [ order x order ]*/
+ SKP_int *rshifts /* I/O Right shifts of correlations */
+);
+
+/* Calculates correlation vector X'*t */
+void SKP_Silk_corrVector_FIX(
+ const SKP_int16 *x, /* I x vector [L + order - 1] used to form data matrix X */
+ const SKP_int16 *t, /* I target vector [L] */
+ const SKP_int L, /* I Length of vectors */
+ const SKP_int order, /* I Max lag for correlation */
+ SKP_int32 *Xt, /* O Pointer to X'*t correlation vector [order] */
+ const SKP_int rshifts /* I Right shifts of correlations */
+);
+
+/* Add noise to matrix diagonal */
+void SKP_Silk_regularize_correlations_FIX(
+ SKP_int32 *XX, /* I/O Correlation matrices */
+ SKP_int32 *xx, /* I/O Correlation values */
+ SKP_int32 noise, /* I Noise to add */
+ SKP_int D /* I Dimension of XX */
+);
+
+/* Solves Ax = b, assuming A is symmetric */
+void SKP_Silk_solve_LDL_FIX(
+ SKP_int32 *A, /* I Pointer to symetric square matrix A */
+ SKP_int M, /* I Size of matrix */
+ const SKP_int32 *b, /* I Pointer to b vector */
+ SKP_int32 *x_Q16 /* O Pointer to x solution vector */
+);
+
+/* Residual energy: nrg = wxx - 2 * wXx * c + c' * wXX * c */
+SKP_int32 SKP_Silk_residual_energy16_covar_FIX(
+ const SKP_int16 *c, /* I Prediction vector */
+ const SKP_int32 *wXX, /* I Correlation matrix */
+ const SKP_int32 *wXx, /* I Correlation vector */
+ SKP_int32 wxx, /* I Signal energy */
+ SKP_int D, /* I Dimension */
+ SKP_int cQ /* I Q value for c vector 0 - 15 */
+);
+
+/* Calculates residual energies of input subframes where all subframes have LPC_order */
+/* of preceeding samples */
+void SKP_Silk_residual_energy_FIX(
+ SKP_int32 nrgs[ NB_SUBFR ], /* O Residual energy per subframe */
+ SKP_int nrgsQ[ NB_SUBFR ], /* O Q value per subframe */
+ const SKP_int16 x[], /* I Input signal */
+ const SKP_int16 a_Q12[ 2 ][ MAX_LPC_ORDER ],/* I AR coefs for each frame half */
+ const SKP_int32 gains_Qx[ NB_SUBFR ], /* I Quantization gains in Qx */
+ const SKP_int Qx, /* I Quantization gains Q value */
+ const SKP_int subfr_length, /* I Subframe length */
+ const SKP_int LPC_order /* I LPC order */
+);
+
+#ifndef FORCE_CPP_BUILD
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+#endif /* FORCE_CPP_BUILD */
+#endif /* SKP_SILK_MAIN_FIX_H */
--- /dev/null
+++ b/src/SKP_Silk_noise_shape_analysis_FIX.c
@@ -1,0 +1,338 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_main_FIX.h"
+#include "SKP_Silk_perceptual_parameters_FIX.h"
+
+
+/**************************************************************/
+/* Compute noise shaping coefficients and initial gain values */
+/**************************************************************/
+void SKP_Silk_noise_shape_analysis_FIX(
+ SKP_Silk_encoder_state_FIX *psEnc, /* I/O Encoder state FIX */
+ SKP_Silk_encoder_control_FIX *psEncCtrl, /* I/O Encoder control FIX */
+ const SKP_int16 *pitch_res, /* I LPC residual from pitch analysis */
+ const SKP_int16 *x /* I Input signal [ 2 * frame_length + la_shape ]*/
+)
+{
+ SKP_Silk_shape_state_FIX *psShapeSt = &psEnc->sShape;
+ SKP_int k, nSamples, lz, Qnrg, b_Q14, scale = 0, sz;
+ SKP_int32 SNR_adj_dB_Q7, HarmBoost_Q16, HarmShapeGain_Q16, Tilt_Q16, tmp32;
+ SKP_int32 nrg, pre_nrg_Q30, log_energy_Q7, log_energy_prev_Q7, energy_variation_Q7;
+ SKP_int32 delta_Q16, BWExp1_Q16, BWExp2_Q16, gain_mult_Q16, gain_add_Q16, strength_Q16, b_Q8;
+ SKP_int32 auto_corr[ SHAPE_LPC_ORDER_MAX + 1 ];
+ SKP_int32 refl_coef_Q16[ SHAPE_LPC_ORDER_MAX ];
+ SKP_int32 AR_Q24[ SHAPE_LPC_ORDER_MAX ];
+ SKP_int16 x_windowed[ SHAPE_LPC_WIN_MAX ];
+ const SKP_int16 *x_ptr, *pitch_res_ptr;
+
+ SKP_int32 sqrt_nrg[ NB_SUBFR ], Qnrg_vec[ NB_SUBFR ];
+
+ /* Point to start of first LPC analysis block */
+ x_ptr = x + psEnc->sCmn.la_shape - SKP_SMULBB( SHAPE_LPC_WIN_MS, psEnc->sCmn.fs_kHz ) + psEnc->sCmn.frame_length / NB_SUBFR;
+
+ /****************/
+ /* CONTROL SNR */
+ /****************/
+ /* Reduce SNR_dB values if recent bitstream has exceeded TargetRate */
+ psEncCtrl->current_SNR_dB_Q7 = psEnc->SNR_dB_Q7 - SKP_SMULWB( SKP_LSHIFT( ( SKP_int32 )psEnc->BufferedInChannel_ms, 7 ), 3277 );
+
+ /* Reduce SNR_dB if inband FEC used */
+ if( psEnc->speech_activity_Q8 > LBRR_SPEECH_ACTIVITY_THRES_Q8 ) {
+ psEncCtrl->current_SNR_dB_Q7 -= SKP_RSHIFT( psEnc->inBandFEC_SNR_comp_Q8, 1 );
+ }
+
+ /****************/
+ /* GAIN CONTROL */
+ /****************/
+ /* Input quality is the average of the quality in the lowest two VAD bands */
+ psEncCtrl->input_quality_Q14 = ( SKP_int )SKP_RSHIFT( ( SKP_int32 )psEncCtrl->input_quality_bands_Q15[ 0 ]
+ + psEncCtrl->input_quality_bands_Q15[ 1 ], 2 );
+ /* Coding quality level, between 0.0_Q0 and 1.0_Q0, but in Q14 */
+ psEncCtrl->coding_quality_Q14 = SKP_RSHIFT( SKP_Silk_sigm_Q15( SKP_RSHIFT_ROUND( psEncCtrl->current_SNR_dB_Q7 - ( 18 << 7 ), 4 ) ), 1 );
+
+ /* Reduce coding SNR during low speech activity */
+ b_Q8 = ( 1 << 8 ) - psEnc->speech_activity_Q8;
+ b_Q8 = SKP_SMULWB( SKP_LSHIFT( b_Q8, 8 ), b_Q8 );
+ SNR_adj_dB_Q7 = SKP_SMLAWB( psEncCtrl->current_SNR_dB_Q7,
+ SKP_SMULBB( -BG_SNR_DECR_dB_Q7 >> ( 4 + 1 ), b_Q8 ), // Q11
+ SKP_SMULWB( ( 1 << 14 ) + psEncCtrl->input_quality_Q14, psEncCtrl->coding_quality_Q14 ) ); // Q12
+
+ if( psEncCtrl->sCmn.sigtype == SIG_TYPE_VOICED ) {
+ /* Reduce gains for periodic signals */
+ SNR_adj_dB_Q7 = SKP_SMLAWB( SNR_adj_dB_Q7, HARM_SNR_INCR_dB_Q7 << 1, psEnc->LTPCorr_Q15 );
+ } else {
+ /* For unvoiced signals and low-quality input, adjust the quality slower than SNR_dB setting */
+ SNR_adj_dB_Q7 = SKP_SMLAWB( SNR_adj_dB_Q7,
+ SKP_SMLAWB( 6 << ( 7 + 2 ), -104856, psEncCtrl->current_SNR_dB_Q7 ), //-104856_Q18 = -0.4_Q0, Q9
+ ( 1 << 14 ) - psEncCtrl->input_quality_Q14 ); // Q14
+ }
+
+ /*************************/
+ /* SPARSENESS PROCESSING */
+ /*************************/
+ /* Set quantizer offset */
+ if( psEncCtrl->sCmn.sigtype == SIG_TYPE_VOICED ) {
+ /* Initally set to 0; may be overruled in process_gains(..) */
+ psEncCtrl->sCmn.QuantOffsetType = 0;
+ psEncCtrl->sparseness_Q8 = 0;
+ } else {
+ /* Sparseness measure, based on relative fluctuations of energy per 2 milliseconds */
+ nSamples = SKP_LSHIFT( psEnc->sCmn.fs_kHz, 1 );
+ energy_variation_Q7 = 0;
+ log_energy_prev_Q7 = 0;
+ pitch_res_ptr = pitch_res;
+ for( k = 0; k < FRAME_LENGTH_MS / 2; k++ ) {
+ SKP_Silk_sum_sqr_shift( &nrg, &scale, pitch_res_ptr, nSamples );
+ nrg += SKP_RSHIFT( nSamples, scale ); // Q(-scale)
+
+ log_energy_Q7 = SKP_Silk_lin2log( nrg );
+ if( k > 0 ) {
+ energy_variation_Q7 += SKP_abs( log_energy_Q7 - log_energy_prev_Q7 );
+ }
+ log_energy_prev_Q7 = log_energy_Q7;
+ pitch_res_ptr += nSamples;
+ }
+
+ psEncCtrl->sparseness_Q8 = SKP_RSHIFT( SKP_Silk_sigm_Q15( SKP_SMULWB( energy_variation_Q7 - ( 5 << 7 ), 6554 ) ), 7 ); // 6554_Q16 = 0.1_Q0
+
+ /* Set quantization offset depending on sparseness measure */
+ if( psEncCtrl->sparseness_Q8 > SPARSENESS_THRESHOLD_QNT_OFFSET_Q8 ) {
+ psEncCtrl->sCmn.QuantOffsetType = 0;
+ } else {
+ psEncCtrl->sCmn.QuantOffsetType = 1;
+ }
+
+ /* Increase coding SNR for sparse signals */
+ SNR_adj_dB_Q7 = SKP_SMLAWB( SNR_adj_dB_Q7, SPARSE_SNR_INCR_dB_Q7 << 8, psEncCtrl->sparseness_Q8 - ( 1 << 7 ) );
+ }
+
+ /*******************************/
+ /* Control bandwidth expansion */
+ /*******************************/
+ delta_Q16 = SKP_SMULWB( ( 1 << 16 ) - SKP_SMULBB( 3, psEncCtrl->coding_quality_Q14 ), LOW_RATE_BANDWIDTH_EXPANSION_DELTA_Q16 );
+ BWExp1_Q16 = BANDWIDTH_EXPANSION_Q16 - delta_Q16;
+ BWExp2_Q16 = BANDWIDTH_EXPANSION_Q16 + delta_Q16;
+ if( psEnc->sCmn.fs_kHz == 24 ) {
+ /* Less bandwidth expansion for super wideband */
+ BWExp1_Q16 = ( 1 << 16 ) - SKP_SMULWB( SWB_BANDWIDTH_EXPANSION_REDUCTION_Q16, ( 1 << 16 ) - BWExp1_Q16 );
+ BWExp2_Q16 = ( 1 << 16 ) - SKP_SMULWB( SWB_BANDWIDTH_EXPANSION_REDUCTION_Q16, ( 1 << 16 ) - BWExp2_Q16 );
+ }
+ /* BWExp1 will be applied after BWExp2, so make it relative */
+ BWExp1_Q16 = SKP_DIV32_16( SKP_LSHIFT( BWExp1_Q16, 14 ), SKP_RSHIFT( BWExp2_Q16, 2 ) );
+
+ /********************************************/
+ /* Compute noise shaping AR coefs and gains */
+ /********************************************/
+ sz = ( SKP_int )SKP_SMULBB( SHAPE_LPC_WIN_MS, psEnc->sCmn.fs_kHz );
+ for( k = 0; k < NB_SUBFR; k++ ) {
+ /* Apply window */
+ SKP_Silk_apply_sine_window( x_windowed, x_ptr, 0, SHAPE_LPC_WIN_MS * psEnc->sCmn.fs_kHz );
+
+ /* Update pointer: next LPC analysis block */
+ x_ptr += psEnc->sCmn.frame_length / NB_SUBFR;
+
+ /* Calculate auto correlation */
+ SKP_Silk_autocorr( auto_corr, &scale, x_windowed, sz, psEnc->sCmn.shapingLPCOrder + 1 );
+
+ /* Add white noise, as a fraction of energy */
+ auto_corr[0] = SKP_ADD32( auto_corr[0], SKP_max_32( SKP_SMULWB( SKP_RSHIFT( auto_corr[ 0 ], 4 ), SHAPE_WHITE_NOISE_FRACTION_Q20 ), 1 ) );
+
+ /* Calculate the reflection coefficients using schur */
+ nrg = SKP_Silk_schur64( refl_coef_Q16, auto_corr, psEnc->sCmn.shapingLPCOrder );
+
+ /* Convert reflection coefficients to prediction coefficients */
+ SKP_Silk_k2a_Q16( AR_Q24, refl_coef_Q16, psEnc->sCmn.shapingLPCOrder );
+
+ /* Bandwidth expansion for synthesis filter shaping */
+ SKP_Silk_bwexpander_32( AR_Q24, psEnc->sCmn.shapingLPCOrder, BWExp2_Q16 );
+
+ /* Make sure to fit in Q13 SKP_int16 */
+ SKP_Silk_LPC_fit( &psEncCtrl->AR2_Q13[ k * SHAPE_LPC_ORDER_MAX ], AR_Q24, 13, psEnc->sCmn.shapingLPCOrder );
+
+ /* Compute noise shaping filter coefficients */
+ SKP_memcpy(
+ &psEncCtrl->AR1_Q13[ k * SHAPE_LPC_ORDER_MAX ],
+ &psEncCtrl->AR2_Q13[ k * SHAPE_LPC_ORDER_MAX ],
+ psEnc->sCmn.shapingLPCOrder * sizeof( SKP_int16 ) );
+
+ /* Bandwidth expansion for analysis filter shaping */
+ SKP_assert( BWExp1_Q16 <= ( 1 << 16 ) ); // If ever breaking, use LPC_stabilize() in these cases to stay within range
+ SKP_Silk_bwexpander( &psEncCtrl->AR1_Q13[ k * SHAPE_LPC_ORDER_MAX ], psEnc->sCmn.shapingLPCOrder, BWExp1_Q16 );
+
+ /* Increase residual energy */
+ nrg = SKP_SMLAWB( nrg, SKP_RSHIFT( auto_corr[ 0 ], 8 ), SHAPE_MIN_ENERGY_RATIO_Q24 );
+
+ Qnrg = -scale; // range: -12...30
+ SKP_assert( Qnrg >= -12 );
+ SKP_assert( Qnrg <= 30 );
+
+ /* Make sure that Qnrg is an even number */
+ if( Qnrg & 1 ) {
+ Qnrg -= 1;
+ nrg >>= 1;
+ }
+
+ tmp32 = SKP_Silk_SQRT_APPROX( nrg );
+ Qnrg >>= 1; // range: -6...15
+
+ sqrt_nrg[ k ] = tmp32;
+ Qnrg_vec[ k ] = Qnrg;
+
+ psEncCtrl->Gains_Q16[ k ] = SKP_LSHIFT_SAT32( tmp32, 16 - Qnrg );
+ /* Ratio of prediction gains, in energy domain */
+ SKP_Silk_LPC_inverse_pred_gain_Q13( &pre_nrg_Q30, &psEncCtrl->AR2_Q13[ k * SHAPE_LPC_ORDER_MAX ], psEnc->sCmn.shapingLPCOrder );
+ SKP_Silk_LPC_inverse_pred_gain_Q13( &nrg, &psEncCtrl->AR1_Q13[ k * SHAPE_LPC_ORDER_MAX ], psEnc->sCmn.shapingLPCOrder );
+
+ lz = SKP_min_32( SKP_Silk_CLZ32( pre_nrg_Q30 ) - 1, 19 );
+ pre_nrg_Q30 = SKP_DIV32( SKP_LSHIFT( pre_nrg_Q30, lz ), SKP_RSHIFT( nrg, 20 - lz ) + 1 ); // Q20
+ pre_nrg_Q30 = SKP_RSHIFT( SKP_LSHIFT_SAT32( pre_nrg_Q30, 9 ), 1 ); /* Q28 */
+ psEncCtrl->GainsPre_Q14[ k ] = ( SKP_int )SKP_Silk_SQRT_APPROX( pre_nrg_Q30 );
+ }
+
+ /*****************/
+ /* Gain tweaking */
+ /*****************/
+ /* Increase gains during low speech activity and put lower limit on gains */
+ gain_mult_Q16 = SKP_Silk_log2lin( -SKP_SMLAWB( -16 << 7, SNR_adj_dB_Q7, 10486 ) ); // 10486_Q16 = 0.16_Q0
+ gain_add_Q16 = SKP_Silk_log2lin( SKP_SMLAWB( 16 << 7, NOISE_FLOOR_dB_Q7, 10486 ) ); // 10486_Q16 = 0.16_Q0
+ tmp32 = SKP_Silk_log2lin( SKP_SMLAWB( 16 << 7, RELATIVE_MIN_GAIN_dB_Q7, 10486 ) ); // 10486_Q16 = 0.16_Q0
+ tmp32 = SKP_SMULWW( psEnc->avgGain_Q16, tmp32 );
+ gain_add_Q16 = SKP_ADD_SAT32( gain_add_Q16, tmp32 );
+ SKP_assert( gain_mult_Q16 >= 0 );
+
+ for( k = 0; k < NB_SUBFR; k++ ) {
+ psEncCtrl->Gains_Q16[ k ] = SKP_SMULWW( psEncCtrl->Gains_Q16[ k ], gain_mult_Q16 );
+ SKP_assert( psEncCtrl->Gains_Q16[ k ] >= 0 );
+ }
+
+ for( k = 0; k < NB_SUBFR; k++ ) {
+ psEncCtrl->Gains_Q16[ k ] = SKP_ADD_POS_SAT32( psEncCtrl->Gains_Q16[ k ], gain_add_Q16 );
+ psEnc->avgGain_Q16 = SKP_ADD_SAT32(
+ psEnc->avgGain_Q16,
+ SKP_SMULWB(
+ psEncCtrl->Gains_Q16[ k ] - psEnc->avgGain_Q16,
+ SKP_RSHIFT_ROUND( SKP_SMULBB( psEnc->speech_activity_Q8, GAIN_SMOOTHING_COEF_Q10 ), 2 )
+ ) );
+ }
+
+ /************************************************/
+ /* Decrease level during fricatives (de-essing) */
+ /************************************************/
+ gain_mult_Q16 = ( 1 << 16 ) + SKP_RSHIFT_ROUND( SKP_MLA( INPUT_TILT_Q26, psEncCtrl->coding_quality_Q14, HIGH_RATE_INPUT_TILT_Q12 ), 10 );
+
+ if( psEncCtrl->input_tilt_Q15 <= 0 && psEncCtrl->sCmn.sigtype == SIG_TYPE_UNVOICED ) {
+ if( psEnc->sCmn.fs_kHz == 24 ) {
+ SKP_int32 essStrength_Q15 = SKP_SMULWW( -psEncCtrl->input_tilt_Q15,
+ SKP_SMULBB( psEnc->speech_activity_Q8, ( 1 << 8 ) - psEncCtrl->sparseness_Q8 ) );
+ tmp32 = SKP_Silk_log2lin( ( 16 << 7 ) - SKP_SMULWB( essStrength_Q15,
+ SKP_SMULWB( DE_ESSER_COEF_SWB_dB_Q7, 20972 ) ) ); // 20972_Q17 = 0.16_Q0
+ gain_mult_Q16 = SKP_SMULWW( gain_mult_Q16, tmp32 );
+ } else if( psEnc->sCmn.fs_kHz == 16 ) {
+ SKP_int32 essStrength_Q15 = SKP_SMULWW(-psEncCtrl->input_tilt_Q15,
+ SKP_SMULBB( psEnc->speech_activity_Q8, ( 1 << 8 ) - psEncCtrl->sparseness_Q8 ));
+ tmp32 = SKP_Silk_log2lin( ( 16 << 7 ) - SKP_SMULWB( essStrength_Q15,
+ SKP_SMULWB( DE_ESSER_COEF_WB_dB_Q7, 20972 ) ) ); // 20972_Q17 = 0.16_Q0
+ gain_mult_Q16 = SKP_SMULWW( gain_mult_Q16, tmp32 );
+ } else {
+ SKP_assert( psEnc->sCmn.fs_kHz == 12 || psEnc->sCmn.fs_kHz == 8 );
+ }
+ }
+
+ for( k = 0; k < NB_SUBFR; k++ ) {
+ psEncCtrl->GainsPre_Q14[ k ] = SKP_SMULWB( gain_mult_Q16, psEncCtrl->GainsPre_Q14[ k ] );
+ }
+
+ /************************************************/
+ /* Control low-frequency shaping and noise tilt */
+ /************************************************/
+ /* Less low frequency shaping for noisy inputs */
+ strength_Q16 = SKP_MUL( LOW_FREQ_SHAPING_Q0, ( 1 << 16 ) + SKP_SMULBB( LOW_QUALITY_LOW_FREQ_SHAPING_DECR_Q1, psEncCtrl->input_quality_bands_Q15[ 0 ] - ( 1 << 15 ) ) );
+ if( psEncCtrl->sCmn.sigtype == SIG_TYPE_VOICED ) {
+ /* Reduce low frequencies quantization noise for periodic signals, depending on pitch lag */
+ /*f = 400; freqz([1, -0.98 + 2e-4 * f], [1, -0.97 + 7e-4 * f], 2^12, Fs); axis([0, 1000, -10, 1])*/
+ SKP_int fs_kHz_inv = SKP_DIV32_16( 3277, psEnc->sCmn.fs_kHz ); // 0.2_Q0 = 3277_Q14
+ for( k = 0; k < NB_SUBFR; k++ ) {
+ b_Q14 = fs_kHz_inv + SKP_DIV32_16( ( 3 << 14 ), psEncCtrl->sCmn.pitchL[ k ] );
+ /* Pack two coefficients in one int32 */
+ psEncCtrl->LF_shp_Q14[ k ] = SKP_LSHIFT( ( 1 << 14 ) - b_Q14 - SKP_SMULWB( strength_Q16, b_Q14 ), 16 );
+ psEncCtrl->LF_shp_Q14[ k ] |= (SKP_uint16)( b_Q14 - ( 1 << 14 ) );
+ }
+ SKP_assert( HARM_HP_NOISE_COEF_Q24 < ( 1 << 23 ) ); // Guarantees that second argument to SMULWB() is within range of an SKP_int16
+ Tilt_Q16 = - HP_NOISE_COEF_Q16 -
+ SKP_SMULWB( ( 1 << 16 ) - HP_NOISE_COEF_Q16, SKP_SMULWB( HARM_HP_NOISE_COEF_Q24, psEnc->speech_activity_Q8 ) );
+ } else {
+ b_Q14 = SKP_DIV32_16( 21299, psEnc->sCmn.fs_kHz ); // 1.3_Q0 = 21299_Q14
+ /* Pack two coefficients in one int32 */
+ psEncCtrl->LF_shp_Q14[ 0 ] = SKP_LSHIFT( ( 1 << 14 ) - b_Q14 - SKP_SMULWB( strength_Q16, SKP_SMULWB( 39322, b_Q14 ) ), 16 ); // 0.6_Q0 = 39322_Q16
+ psEncCtrl->LF_shp_Q14[ 0 ] |= (SKP_uint16)( b_Q14 - ( 1 << 14 ) );
+ for( k = 1; k < NB_SUBFR; k++ ) {
+ psEncCtrl->LF_shp_Q14[ k ] = psEncCtrl->LF_shp_Q14[ k - 1 ];
+ }
+ Tilt_Q16 = -HP_NOISE_COEF_Q16;
+ }
+
+ /****************************/
+ /* HARMONIC SHAPING CONTROL */
+ /****************************/
+ /* Control boosting of harmonic frequencies */
+ HarmBoost_Q16 = SKP_SMULWB( SKP_SMULWB( ( 1 << 17 ) - SKP_LSHIFT( psEncCtrl->coding_quality_Q14, 3 ),
+ psEnc->LTPCorr_Q15 ), LOW_RATE_HARMONIC_BOOST_Q16 );
+
+ /* More harmonic boost for noisy input signals */
+ HarmBoost_Q16 = SKP_SMLAWB( HarmBoost_Q16,
+ ( 1 << 16 ) - SKP_LSHIFT( psEncCtrl->input_quality_Q14, 2 ), LOW_INPUT_QUALITY_HARMONIC_BOOST_Q16 );
+
+ if( USE_HARM_SHAPING && psEncCtrl->sCmn.sigtype == SIG_TYPE_VOICED ) {
+ /* More harmonic noise shaping for high bitrates or noisy input */
+ HarmShapeGain_Q16 = SKP_SMLAWB( HARMONIC_SHAPING_Q16,
+ ( 1 << 16 ) - SKP_SMULWB( ( 1 << 18 ) - SKP_LSHIFT( psEncCtrl->coding_quality_Q14, 4 ),
+ psEncCtrl->input_quality_Q14 ), HIGH_RATE_OR_LOW_QUALITY_HARMONIC_SHAPING_Q16 );
+
+ /* Less harmonic noise shaping for less periodic signals */
+ HarmShapeGain_Q16 = SKP_SMULWB( SKP_LSHIFT( HarmShapeGain_Q16, 1 ),
+ SKP_Silk_SQRT_APPROX( SKP_LSHIFT( psEnc->LTPCorr_Q15, 15 ) ) );
+ } else {
+ HarmShapeGain_Q16 = 0;
+ }
+
+ /*************************/
+ /* Smooth over subframes */
+ /*************************/
+ for( k = 0; k < NB_SUBFR; k++ ) {
+ psShapeSt->HarmBoost_smth_Q16 =
+ SKP_SMLAWB( psShapeSt->HarmBoost_smth_Q16, HarmBoost_Q16 - psShapeSt->HarmBoost_smth_Q16, SUBFR_SMTH_COEF_Q16 );
+ psShapeSt->HarmShapeGain_smth_Q16 =
+ SKP_SMLAWB( psShapeSt->HarmShapeGain_smth_Q16, HarmShapeGain_Q16 - psShapeSt->HarmShapeGain_smth_Q16, SUBFR_SMTH_COEF_Q16 );
+ psShapeSt->Tilt_smth_Q16 =
+ SKP_SMLAWB( psShapeSt->Tilt_smth_Q16, Tilt_Q16 - psShapeSt->Tilt_smth_Q16, SUBFR_SMTH_COEF_Q16 );
+
+ psEncCtrl->HarmBoost_Q14[ k ] = ( SKP_int )SKP_RSHIFT_ROUND( psShapeSt->HarmBoost_smth_Q16, 2 );
+ psEncCtrl->HarmShapeGain_Q14[ k ] = ( SKP_int )SKP_RSHIFT_ROUND( psShapeSt->HarmShapeGain_smth_Q16, 2 );
+ psEncCtrl->Tilt_Q14[ k ] = ( SKP_int )SKP_RSHIFT_ROUND( psShapeSt->Tilt_smth_Q16, 2 );
+ }
+}
--- /dev/null
+++ b/src/SKP_Silk_perceptual_parameters_FIX.h
@@ -1,0 +1,121 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#ifndef SKP_SILK_PERCEPTUAL_PARAMETERS_FIX_H
+#define SKP_SILK_PERCEPTUAL_PARAMETERS_FIX_H
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+/* reduction in coding SNR during low speech activity */
+#define BG_SNR_DECR_dB_Q7 (3<<7)
+
+/* factor for reducing quantization noise during voiced speech */
+#define HARM_SNR_INCR_dB_Q7 (2<<7)
+
+/* factor for reducing quantization noise for unvoiced sparse signals */
+#define SPARSE_SNR_INCR_dB_Q7 (2<<7)
+
+/* threshold for sparseness measure above which to use lower quantization offset during unvoiced */
+#define SPARSENESS_THRESHOLD_QNT_OFFSET_Q8 (3<<6) // 0.75
+
+
+/* noise shaping filter chirp factor */
+#define BANDWIDTH_EXPANSION_Q16 61604 // 0.94
+
+/* difference between chirp factors for analysis and synthesis noise shaping filters at low bitrates */
+#define LOW_RATE_BANDWIDTH_EXPANSION_DELTA_Q16 655 //0.01f
+
+/* factor to reduce all bandwidth expansion coefficients for super wideband, relative to wideband */
+#define SWB_BANDWIDTH_EXPANSION_REDUCTION_Q16 (1<<16) // 1.0f;
+
+/* gain reduction for fricatives */
+#define DE_ESSER_COEF_SWB_dB_Q7 (2 << 7)
+#define DE_ESSER_COEF_WB_dB_Q7 (1 << 7)
+
+
+/* extra harmonic boosting (signal shaping) at low bitrates */
+#define LOW_RATE_HARMONIC_BOOST_Q16 6554 // 0.1
+
+/* extra harmonic boosting (signal shaping) for noisy input signals */
+#define LOW_INPUT_QUALITY_HARMONIC_BOOST_Q16 6554 // 0.1
+
+/* harmonic noise shaping */
+#define HARMONIC_SHAPING_Q16 19661 // 0.3
+
+/* extra harmonic noise shaping for high bitrates or noisy input */
+#define HIGH_RATE_OR_LOW_QUALITY_HARMONIC_SHAPING_Q16 13107 // 0.2
+
+
+/* parameter for shaping noise towards higher frequencies */
+#define HP_NOISE_COEF_Q16 19661 // 0.3
+
+/* parameter for shaping noise extra towards higher frequencies during voiced speech */
+#define HARM_HP_NOISE_COEF_Q24 7549747 // 0.45
+
+/* parameter for applying a high-pass tilt to the input signal */
+#define INPUT_TILT_Q26 2684355 // 0.04
+
+/* parameter for extra high-pass tilt to the input signal at high rates */
+#define HIGH_RATE_INPUT_TILT_Q12 246 // 0.06
+
+/* parameter for reducing noise at the very low frequencies */
+#define LOW_FREQ_SHAPING_Q0 3
+
+/* less reduction of noise at the very low frequencies for signals with low SNR at low frequencies */
+#define LOW_QUALITY_LOW_FREQ_SHAPING_DECR_Q1 1 // 0.5_Q0
+
+/* fraction added to first autocorrelation value */
+#define SHAPE_WHITE_NOISE_FRACTION_Q20 50 // 50_Q20 = 4.7684e-5
+
+/* fraction of first autocorrelation value added to residual energy value; limits prediction gain */
+#define SHAPE_MIN_ENERGY_RATIO_Q24 256
+
+/* noise floor to put a low limit on the quantization step size */
+#define NOISE_FLOOR_dB_Q7 (4 << 7)
+
+/* noise floor relative to active speech gain level */
+#define RELATIVE_MIN_GAIN_dB_Q7 -6400 // -50_Q0 = -6400_Q7
+
+/* subframe smoothing coefficient for determining active speech gain level (lower -> more smoothing) */
+#define GAIN_SMOOTHING_COEF_Q10 1 // 1e-3_Q0 = 1.024_Q10
+
+/* subframe smoothing coefficient for HarmBoost, HarmShapeGain, Tilt (lower -> more smoothing) */
+#define SUBFR_SMTH_COEF_Q16 26214 // 0.4
+
+#define NOISE_GAIN_VL_Q16 7864
+#define NOISE_GAIN_VH_Q16 7864
+#define NOISE_GAIN_UVL_Q16 6554
+#define NOISE_GAIN_UVH_Q16 9830
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif //SKP_SILK_PERCEPTUAL_PARAMETERS_FIX_H
--- /dev/null
+++ b/src/SKP_Silk_pitch_analysis_core.c
@@ -1,0 +1,747 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+/***********************************************************
+* Pitch analyser function
+********************************************************** */
+#include "SKP_Silk_SigProc_FIX.h"
+#include "SKP_Silk_pitch_est_defines.h"
+#include "SKP_Silk_resample_rom.h"
+
+#define SCRATCH_SIZE 22
+
+/************************************************************/
+/* Internally used functions */
+/************************************************************/
+void SKP_FIX_P_Ana_calc_corr_st3(
+ SKP_int32 cross_corr_st3[PITCH_EST_NB_SUBFR][PITCH_EST_NB_CBKS_STAGE3_MAX][PITCH_EST_NB_STAGE3_LAGS],/* (O) 3 DIM correlation array */
+ const SKP_int16 signal[], /* I vector to correlate */
+ SKP_int start_lag, /* I lag offset to search around */
+ SKP_int sf_length, /* I length of a 5 ms subframe */
+ SKP_int complexity /* I Complexity setting */
+);
+
+void SKP_FIX_P_Ana_calc_energy_st3(
+ SKP_int32 energies_st3[PITCH_EST_NB_SUBFR][PITCH_EST_NB_CBKS_STAGE3_MAX][PITCH_EST_NB_STAGE3_LAGS],/* (O) 3 DIM energy array */
+ const SKP_int16 signal[], /* I vector to calc energy in */
+ SKP_int start_lag, /* I lag offset to search around */
+ SKP_int sf_length, /* I length of one 5 ms subframe */
+ SKP_int complexity /* I Complexity setting */
+);
+
+SKP_int32 SKP_FIX_P_Ana_find_scaling(
+ const SKP_int16 *signal,
+ const SKP_int signal_length,
+ const SKP_int sum_sqr_len
+);
+
+void SKP_Silk_decode_pitch(
+ SKP_int lagIndex, /* I */
+ SKP_int contourIndex, /* O */
+ SKP_int pitch_lags[], /* O 4 pitch values */
+ SKP_int Fs_kHz /* I sampling frequency (kHz) */
+)
+{
+ SKP_int lag, i, min_lag;
+
+ min_lag = SKP_SMULBB( PITCH_EST_MIN_LAG_MS, Fs_kHz );
+
+ /* Only for 24 / 16 kHz version for now */
+ lag = min_lag + lagIndex;
+ if( Fs_kHz == 8 ) {
+ /* Only a small codebook for 8 khz */
+ for( i = 0; i < PITCH_EST_NB_SUBFR; i++ ) {
+ pitch_lags[ i ] = lag + SKP_Silk_CB_lags_stage2[ i ][ contourIndex ];
+ }
+ } else {
+ for( i = 0; i < PITCH_EST_NB_SUBFR; i++ ) {
+ pitch_lags[ i ] = lag + SKP_Silk_CB_lags_stage3[ i ][ contourIndex ];
+ }
+ }
+}
+
+/*************************************************************/
+/* FIXED POINT CORE PITCH ANALYSIS FUNCTION */
+/*************************************************************/
+SKP_int SKP_Silk_pitch_analysis_core( /* O Voicing estimate: 0 voiced, 1 unvoiced */
+ const SKP_int16 *signal, /* I Signal of length PITCH_EST_FRAME_LENGTH_MS*Fs_kHz */
+ SKP_int *pitch_out, /* O 4 pitch lag values */
+ SKP_int *lagIndex, /* O Lag Index */
+ SKP_int *contourIndex, /* O Pitch contour Index */
+ SKP_int *LTPCorr_Q15, /* I/O Normalized correlation; input: value from previous frame */
+ SKP_int prevLag, /* I Last lag of previous frame; set to zero is unvoiced */
+ const SKP_int32 search_thres1_Q16, /* I First stage threshold for lag candidates 0 - 1 */
+ const SKP_int search_thres2_Q15, /* I Final threshold for lag candidates 0 - 1 */
+ const SKP_int Fs_kHz, /* I Sample frequency (kHz) */
+ const SKP_int complexity /* I Complexity setting, 0-2, where 2 is highest */
+)
+{
+ SKP_int16 signal_8kHz[ PITCH_EST_MAX_FRAME_LENGTH_ST_2 ];
+ SKP_int16 signal_4kHz[ PITCH_EST_MAX_FRAME_LENGTH_ST_1 ];
+ SKP_int32 scratch_mem[ 3 * PITCH_EST_MAX_FRAME_LENGTH ];
+ SKP_int16 *input_signal_ptr;
+ SKP_int32 filt_state[ PITCH_EST_MAX_DECIMATE_STATE_LENGTH ];
+ SKP_int i, k, d, j;
+ SKP_int16 C[ PITCH_EST_NB_SUBFR ][ ( PITCH_EST_MAX_LAG >> 1 ) + 5 ];
+ const SKP_int16 *target_ptr, *basis_ptr;
+ SKP_int32 cross_corr, normalizer, energy, shift, energy_basis, energy_target;
+ SKP_int d_srch[ PITCH_EST_D_SRCH_LENGTH ];
+ SKP_int16 d_comp[ ( PITCH_EST_MAX_LAG >> 1 ) + 5 ];
+ SKP_int Cmax, length_d_srch, length_d_comp;
+ SKP_int32 sum, threshold, temp32;
+ SKP_int CBimax, CBimax_new, CBimax_old, lag, start_lag, end_lag, lag_new;
+ SKP_int32 CC[ PITCH_EST_NB_CBKS_STAGE2_EXT ], CCmax, CCmax_b, CCmax_new_b, CCmax_new;
+ SKP_int32 energies_st3[ PITCH_EST_NB_SUBFR ][ PITCH_EST_NB_CBKS_STAGE3_MAX ][ PITCH_EST_NB_STAGE3_LAGS ];
+ SKP_int32 crosscorr_st3[ PITCH_EST_NB_SUBFR ][ PITCH_EST_NB_CBKS_STAGE3_MAX ][ PITCH_EST_NB_STAGE3_LAGS ];
+ SKP_int32 lag_counter;
+ SKP_int frame_length, frame_length_8kHz, frame_length_4kHz, max_sum_sq_length;
+ SKP_int sf_length, sf_length_8kHz, sf_length_4kHz;
+ SKP_int min_lag, min_lag_8kHz, min_lag_4kHz;
+ SKP_int max_lag, max_lag_8kHz, max_lag_4kHz;
+ SKP_int32 contour_bias, diff;
+ SKP_int32 lz, lshift;
+ SKP_int cbk_offset, cbk_size, nb_cbks_stage2;
+ SKP_int32 delta_lag_log2_sqr_Q7, lag_log2_Q7, prevLag_log2_Q7, prev_lag_bias_Q15, corr_thres_Q15;
+
+ /* Check for valid sampling frequency */
+ SKP_assert( Fs_kHz == 8 || Fs_kHz == 12 || Fs_kHz == 16 || Fs_kHz == 24 );
+
+ /* Check for valid complexity setting */
+ SKP_assert( complexity >= SigProc_PITCH_EST_MIN_COMPLEX );
+ SKP_assert( complexity <= SigProc_PITCH_EST_MAX_COMPLEX );
+
+ SKP_assert( search_thres1_Q16 >= 0 && search_thres1_Q16 <= (1<<16) );
+ SKP_assert( search_thres2_Q15 >= 0 && search_thres2_Q15 <= (1<<15) );
+
+ /* Setup frame lengths max / min lag for the sampling frequency */
+ frame_length = PITCH_EST_FRAME_LENGTH_MS * Fs_kHz;
+ frame_length_4kHz = PITCH_EST_FRAME_LENGTH_MS * 4;
+ frame_length_8kHz = PITCH_EST_FRAME_LENGTH_MS * 8;
+ sf_length = SKP_RSHIFT( frame_length, 3 );
+ sf_length_4kHz = SKP_RSHIFT( frame_length_4kHz, 3 );
+ sf_length_8kHz = SKP_RSHIFT( frame_length_8kHz, 3 );
+ min_lag = PITCH_EST_MIN_LAG_MS * Fs_kHz;
+ min_lag_4kHz = PITCH_EST_MIN_LAG_MS * 4;
+ min_lag_8kHz = PITCH_EST_MIN_LAG_MS * 8;
+ max_lag = PITCH_EST_MAX_LAG_MS * Fs_kHz;
+ max_lag_4kHz = PITCH_EST_MAX_LAG_MS * 4;
+ max_lag_8kHz = PITCH_EST_MAX_LAG_MS * 8;
+
+ SKP_memset( C, 0, sizeof( SKP_int16 ) * PITCH_EST_NB_SUBFR * ( ( PITCH_EST_MAX_LAG >> 1 ) + 5) );
+
+ /* Resample from input sampled at Fs_kHz to 8 kHz */
+ if( Fs_kHz == 12 ) {
+ SKP_int16 R23[ SigProc_Resample_2_3_coarsest_NUM_FIR_COEFS - 1 ];
+ SKP_memset( R23, 0, ( SigProc_Resample_2_3_coarsest_NUM_FIR_COEFS - 1 ) * sizeof( SKP_int16 ) );
+
+ SKP_Silk_resample_2_3_coarsest( signal_8kHz, R23, signal,
+ PITCH_EST_FRAME_LENGTH_MS * 12, (SKP_int16*)scratch_mem );
+ } else if( Fs_kHz == 16 ) {
+ if( complexity == SigProc_PITCH_EST_MAX_COMPLEX ) {
+ SKP_assert( 4 <= PITCH_EST_MAX_DECIMATE_STATE_LENGTH );
+ SKP_memset( filt_state, 0, 4 * sizeof( SKP_int32 ) );
+
+ SKP_Silk_resample_1_2_coarse( signal, filt_state, signal_8kHz,
+ scratch_mem, frame_length_8kHz );
+ } else {
+ SKP_assert( 2 <= PITCH_EST_MAX_DECIMATE_STATE_LENGTH );
+ SKP_memset( filt_state, 0, 2 * sizeof( SKP_int32 ) );
+
+ SKP_Silk_resample_1_2_coarsest( signal, filt_state, signal_8kHz,
+ scratch_mem, frame_length_8kHz );
+ }
+ } else if( Fs_kHz == 24 ) {
+ /* Resample to 24 -> 8 khz */
+ SKP_assert( 7 <= PITCH_EST_MAX_DECIMATE_STATE_LENGTH );
+ SKP_memset( filt_state, 0, 7 * sizeof( SKP_int32 ) );
+
+ SKP_Silk_resample_1_3( signal_8kHz, filt_state, signal, 24 * PITCH_EST_FRAME_LENGTH_MS );
+
+ } else {
+ SKP_assert( Fs_kHz == 8 );
+ SKP_memcpy( signal_8kHz, signal, frame_length_8kHz * sizeof( SKP_int16 ) );
+ }
+
+ /* Decimate again to 4 kHz. Set mem to zero */
+ if( complexity == SigProc_PITCH_EST_MAX_COMPLEX ) {
+ SKP_assert( 4 <= PITCH_EST_MAX_DECIMATE_STATE_LENGTH );
+ SKP_memset( filt_state, 0, 4 * sizeof( SKP_int32 ) );
+ SKP_Silk_resample_1_2_coarse( signal_8kHz, filt_state,
+ signal_4kHz, scratch_mem, frame_length_4kHz );
+ } else {
+ SKP_assert( 2 <= PITCH_EST_MAX_DECIMATE_STATE_LENGTH );
+ SKP_memset( filt_state, 0, 2 * sizeof( SKP_int32 ) );
+ SKP_Silk_resample_1_2_coarsest( signal_8kHz, filt_state,
+ signal_4kHz, scratch_mem, frame_length_4kHz );
+ }
+
+ /* Low-pass filter */
+ for( i = frame_length_4kHz - 1; i > 0; i-- ) {
+ signal_4kHz[ i ] = SKP_ADD_SAT16( signal_4kHz[ i ], signal_4kHz[ i - 1 ] );
+ }
+
+ /*******************************************************************************
+ ** Scale 4 kHz signal down to prevent correlations measures from overflowing
+ ** find scaling as max scaling for each 8kHz(?) subframe
+ *******************************************************************************/
+
+ /* Inner product is calculated with different lengths, so scale for the worst case */
+ max_sum_sq_length = SKP_max_32( sf_length_8kHz, SKP_RSHIFT( frame_length_4kHz, 1 ) );
+ shift = SKP_FIX_P_Ana_find_scaling( signal_4kHz, frame_length_4kHz, max_sum_sq_length );
+ if( shift > 0 ) {
+ for( i = 0; i < frame_length_4kHz; i++ ) {
+ signal_4kHz[ i ] = SKP_RSHIFT( signal_4kHz[ i ], shift );
+ }
+ }
+
+ /******************************************************************************
+ * FIRST STAGE, operating in 4 khz
+ ******************************************************************************/
+ target_ptr = &signal_4kHz[ SKP_RSHIFT( frame_length_4kHz, 1 ) ];
+ for( k = 0; k < 2; k++ ) {
+ /* Check that we are within range of the array */
+ SKP_assert( target_ptr >= signal_4kHz );
+ SKP_assert( target_ptr + sf_length_8kHz <= signal_4kHz + frame_length_4kHz );
+
+ basis_ptr = target_ptr - min_lag_4kHz;
+
+ /* Check that we are within range of the array */
+ SKP_assert( basis_ptr >= signal_4kHz );
+ SKP_assert( basis_ptr + sf_length_8kHz <= signal_4kHz + frame_length_4kHz );
+
+ normalizer = 0;
+ cross_corr = 0;
+ /* Calculate first vector products before loop */
+ cross_corr = SKP_Silk_inner_prod_aligned( target_ptr, basis_ptr, sf_length_8kHz );
+ normalizer = SKP_Silk_inner_prod_aligned( basis_ptr, basis_ptr, sf_length_8kHz );
+ normalizer = SKP_ADD_SAT32( normalizer, 1000 );
+
+ temp32 = SKP_DIV32( cross_corr, SKP_Silk_SQRT_APPROX( normalizer ) + 1 );
+ C[ k ][ min_lag_4kHz ] = (SKP_int16)SKP_SAT16( temp32 ); /* Q0 */
+
+ /* From now on normalizer is computed recursively */
+ for( d = min_lag_4kHz + 1; d <= max_lag_4kHz; d++ ) {
+ basis_ptr--;
+
+ /* Check that we are within range of the array */
+ SKP_assert( basis_ptr >= signal_4kHz );
+ SKP_assert( basis_ptr + sf_length_8kHz <= signal_4kHz + frame_length_4kHz );
+
+ cross_corr = SKP_Silk_inner_prod_aligned( target_ptr, basis_ptr, sf_length_8kHz );
+
+ /* Add contribution of new sample and remove contribution from oldest sample */
+ normalizer +=
+ SKP_SMULBB( basis_ptr[ 0 ], basis_ptr[ 0 ] ) -
+ SKP_SMULBB( basis_ptr[ sf_length_8kHz ], basis_ptr[ sf_length_8kHz ] );
+
+ temp32 = SKP_DIV32( cross_corr, SKP_Silk_SQRT_APPROX( normalizer ) + 1 );
+ C[ k ][ d ] = (SKP_int16)SKP_SAT16( temp32 ); /* Q0 */
+ }
+ /* Update target pointer */
+ target_ptr += sf_length_8kHz;
+ }
+
+ /* Combine two subframes into single correlation measure and apply short-lag bias */
+ for( i = max_lag_4kHz; i >= min_lag_4kHz; i-- ) {
+ sum = (SKP_int32)C[ 0 ][ i ] + (SKP_int32)C[ 1 ][ i ]; /* Q0 */
+ SKP_assert( SKP_RSHIFT( sum, 1 ) == SKP_SAT16( SKP_RSHIFT( sum, 1 ) ) );
+ sum = SKP_RSHIFT( sum, 1 ); /* Q-1 */
+ SKP_assert( SKP_LSHIFT( (SKP_int32)-i, 4 ) == SKP_SAT16( SKP_LSHIFT( (SKP_int32)-i, 4 ) ) );
+ sum = SKP_SMLAWB( sum, sum, SKP_LSHIFT( -i, 4 ) ); /* Q-1 */
+ SKP_assert( sum == SKP_SAT16( sum ) );
+ C[ 0 ][ i ] = (SKP_int16)sum; /* Q-1 */
+ }
+
+ /* Sort */
+ length_d_srch = 5 + complexity;
+ SKP_assert( length_d_srch <= PITCH_EST_D_SRCH_LENGTH );
+ SKP_Silk_insertion_sort_decreasing_int16( &C[ 0 ][ min_lag_4kHz ], d_srch, max_lag_4kHz - min_lag_4kHz + 1, length_d_srch );
+
+ /* Escape if correlation is very low already here */
+ target_ptr = &signal_4kHz[ SKP_RSHIFT( frame_length_4kHz, 1 ) ];
+ energy = SKP_Silk_inner_prod_aligned( target_ptr, target_ptr, SKP_RSHIFT( frame_length_4kHz, 1 ) );
+ energy = SKP_ADD_SAT32( energy, 1000 ); /* Q0 */
+ Cmax = (SKP_int)C[ 0 ][ min_lag_4kHz ]; /* Q-1 */
+ threshold = SKP_SMULBB( Cmax, Cmax ); /* Q-2 */
+ /* Compare in Q-2 domain */
+ if( SKP_RSHIFT( energy, 4 + 2 ) > threshold ) {
+ SKP_memset( pitch_out, 0, PITCH_EST_NB_SUBFR * sizeof( SKP_int ) );
+ *LTPCorr_Q15 = 0;
+ *lagIndex = 0;
+ *contourIndex = 0;
+ return 1;
+ }
+
+ threshold = SKP_SMULWB( search_thres1_Q16, Cmax );
+ for( i = 0; i < length_d_srch; i++ ) {
+ /* Convert to 8 kHz indices for the sorted correlation that exceeds the threshold */
+ if( C[ 0 ][ min_lag_4kHz + i ] > threshold ) {
+ d_srch[ i ] = SKP_LSHIFT( d_srch[ i ] + min_lag_4kHz, 1 );
+ } else {
+ length_d_srch = i;
+ break;
+ }
+ }
+ SKP_assert( length_d_srch > 0 );
+
+ for( i = min_lag_8kHz - 5; i < max_lag_8kHz + 5; i++ ) {
+ d_comp[ i ] = 0;
+ }
+ for( i = 0; i < length_d_srch; i++ ) {
+ d_comp[ d_srch[ i ] ] = 1;
+ }
+
+ /* Convolution */
+ for( i = max_lag_8kHz + 3; i >= min_lag_8kHz; i-- ) {
+ d_comp[ i ] += d_comp[ i - 1 ] + d_comp[ i - 2 ];
+ }
+
+ length_d_srch = 0;
+ for( i = min_lag_8kHz; i < max_lag_8kHz + 1; i++ ) {
+ if( d_comp[ i + 1 ] > 0 ) {
+ d_srch[ length_d_srch ] = i;
+ length_d_srch++;
+ }
+ }
+
+ /* Convolution */
+ for( i = max_lag_8kHz + 3; i >= min_lag_8kHz; i-- ) {
+ d_comp[ i ] += d_comp[ i - 1 ] + d_comp[ i - 2 ] + d_comp[ i - 3 ];
+ }
+
+ length_d_comp = 0;
+ for( i = min_lag_8kHz; i < max_lag_8kHz + 4; i++ ) {
+ if( d_comp[ i ] > 0 ) {
+ d_comp[ length_d_comp ] = i - 2;
+ length_d_comp++;
+ }
+ }
+
+ /**********************************************************************************
+ ** SECOND STAGE, operating at 8 kHz, on lag sections with high correlation
+ *************************************************************************************/
+
+ /******************************************************************************
+ ** Scale signal down to avoid correlations measures from overflowing
+ *******************************************************************************/
+ /* find scaling as max scaling for each subframe */
+ shift = SKP_FIX_P_Ana_find_scaling( signal_8kHz, frame_length_8kHz, sf_length_8kHz );
+ if( shift > 0 ) {
+ for( i = 0; i < frame_length_8kHz; i++ ) {
+ signal_8kHz[ i ] = SKP_RSHIFT( signal_8kHz[ i ], shift );
+ }
+ }
+
+ /*********************************************************************************
+ * Find energy of each subframe projected onto its history, for a range of delays
+ *********************************************************************************/
+ SKP_memset( C, 0, PITCH_EST_NB_SUBFR * ( ( PITCH_EST_MAX_LAG >> 1 ) + 5 ) * sizeof( SKP_int16 ) );
+
+ target_ptr = &signal_8kHz[ frame_length_4kHz ]; /* point to middle of frame */
+ for( k = 0; k < PITCH_EST_NB_SUBFR; k++ ) {
+
+ /* Check that we are within range of the array */
+ SKP_assert( target_ptr >= signal_8kHz );
+ SKP_assert( target_ptr + sf_length_8kHz <= signal_8kHz + frame_length_8kHz );
+
+ energy_target = SKP_Silk_inner_prod_aligned( target_ptr, target_ptr, sf_length_8kHz );
+ // ToDo: Calculate 1 / energy_target here and save one division inside next for loop
+ for( j = 0; j < length_d_comp; j++ ) {
+ d = d_comp[ j ];
+ basis_ptr = target_ptr - d;
+
+ /* Check that we are within range of the array */
+ SKP_assert( basis_ptr >= signal_8kHz );
+ SKP_assert( basis_ptr + sf_length_8kHz <= signal_8kHz + frame_length_8kHz );
+
+ cross_corr = SKP_Silk_inner_prod_aligned( target_ptr, basis_ptr, sf_length_8kHz );
+ energy_basis = SKP_Silk_inner_prod_aligned( basis_ptr, basis_ptr, sf_length_8kHz );
+ if( cross_corr > 0 ) {
+ energy = SKP_max( energy_target, energy_basis ); /* Find max to make sure first division < 1.0 */
+ lz = SKP_Silk_CLZ32( cross_corr );
+ lshift = SKP_LIMIT( lz - 1, 0, 15 );
+ temp32 = SKP_DIV32( SKP_LSHIFT( cross_corr, lshift ), SKP_RSHIFT( energy, 15 - lshift ) + 1 ); /* Q15 */
+ SKP_assert( temp32 == SKP_SAT16( temp32 ) );
+ temp32 = SKP_SMULWB( cross_corr, temp32 ); /* Q(-1), cc * ( cc / max(b, t) ) */
+ temp32 = SKP_ADD_SAT32( temp32, temp32 ); /* Q(0) */
+ lz = SKP_Silk_CLZ32( temp32 );
+ lshift = SKP_LIMIT( lz - 1, 0, 15 );
+ energy = SKP_min( energy_target, energy_basis );
+ C[ k ][ d ] = SKP_DIV32( SKP_LSHIFT( temp32, lshift ), SKP_RSHIFT( energy, 15 - lshift ) + 1 ); // Q15
+ } else {
+ C[ k ][ d ] = 0;
+ }
+ }
+ target_ptr += sf_length_8kHz;
+ }
+
+ /* search over lag range and lags codebook */
+ /* scale factor for lag codebook, as a function of center lag */
+
+ CCmax = SKP_int32_MIN;
+ CCmax_b = SKP_int32_MIN;
+
+ CBimax = 0; /* To avoid returning undefined lag values */
+ lag = -1; /* To check if lag with strong enough correlation has been found */
+
+ if( prevLag > 0 ) {
+ if( Fs_kHz == 12 ) {
+ prevLag = SKP_DIV32_16( SKP_LSHIFT( prevLag, 1 ), 3 );
+ } else if( Fs_kHz == 16 ) {
+ prevLag = SKP_RSHIFT( prevLag, 1 );
+ } else if( Fs_kHz == 24 ) {
+ prevLag = SKP_DIV32_16( prevLag, 3 );
+ }
+ prevLag_log2_Q7 = SKP_Silk_lin2log( (SKP_int32)prevLag );
+ } else {
+ prevLag_log2_Q7 = 0;
+ }
+ SKP_assert( search_thres2_Q15 == SKP_SAT16( search_thres2_Q15 ) );
+ corr_thres_Q15 = SKP_RSHIFT( SKP_SMULBB( search_thres2_Q15, search_thres2_Q15 ), 13 );
+
+ /* If input is 8 khz use a larger codebook here because it is last stage */
+ if( Fs_kHz == 8 && complexity > SigProc_PITCH_EST_MIN_COMPLEX ) {
+ nb_cbks_stage2 = PITCH_EST_NB_CBKS_STAGE2_EXT;
+ } else {
+ nb_cbks_stage2 = PITCH_EST_NB_CBKS_STAGE2;
+ }
+
+ for( k = 0; k < length_d_srch; k++ ) {
+ d = d_srch[ k ];
+ for( j = 0; j < nb_cbks_stage2; j++ ) {
+ CC[ j ] = 0;
+ for( i = 0; i < PITCH_EST_NB_SUBFR; i++ ) {
+ /* Try all codebooks */
+ CC[ j ] = CC[ j ] + (SKP_int32)C[ i ][ d + SKP_Silk_CB_lags_stage2[ i ][ j ] ];
+ }
+ }
+ /* Find best codebook */
+ CCmax_new = SKP_int32_MIN;
+ CBimax_new = 0;
+ for( i = 0; i < nb_cbks_stage2; i++ ) {
+ if( CC[ i ] > CCmax_new ) {
+ CCmax_new = CC[ i ];
+ CBimax_new = i;
+ }
+ }
+
+ /* Bias towards shorter lags */
+ lag_log2_Q7 = SKP_Silk_lin2log( (SKP_int32)d ); /* Q7 */
+ SKP_assert( lag_log2_Q7 == SKP_SAT16( lag_log2_Q7 ) );
+ SKP_assert( PITCH_EST_NB_SUBFR * PITCH_EST_SHORTLAG_BIAS_Q15 == SKP_SAT16( PITCH_EST_NB_SUBFR * PITCH_EST_SHORTLAG_BIAS_Q15 ) );
+ CCmax_new_b = CCmax_new - SKP_RSHIFT( SKP_SMULBB( PITCH_EST_NB_SUBFR * PITCH_EST_SHORTLAG_BIAS_Q15, lag_log2_Q7 ), 7 ); /* Q15 */
+
+ /* Bias towards previous lag */
+ SKP_assert( PITCH_EST_NB_SUBFR * PITCH_EST_PREVLAG_BIAS_Q15 == SKP_SAT16( PITCH_EST_NB_SUBFR * PITCH_EST_PREVLAG_BIAS_Q15 ) );
+ if( prevLag > 0 ) {
+ delta_lag_log2_sqr_Q7 = lag_log2_Q7 - prevLag_log2_Q7;
+ SKP_assert( delta_lag_log2_sqr_Q7 == SKP_SAT16( delta_lag_log2_sqr_Q7 ) );
+ delta_lag_log2_sqr_Q7 = SKP_RSHIFT( SKP_SMULBB( delta_lag_log2_sqr_Q7, delta_lag_log2_sqr_Q7 ), 7 );
+ prev_lag_bias_Q15 = SKP_RSHIFT( SKP_SMULBB( PITCH_EST_NB_SUBFR * PITCH_EST_PREVLAG_BIAS_Q15, ( *LTPCorr_Q15 ) ), 15 ); /* Q15 */
+ prev_lag_bias_Q15 = SKP_DIV32( SKP_MUL( prev_lag_bias_Q15, delta_lag_log2_sqr_Q7 ), delta_lag_log2_sqr_Q7 + ( 1 << 6 ) );
+ CCmax_new_b -= prev_lag_bias_Q15; /* Q15 */
+ }
+
+ if( CCmax_new_b > CCmax_b && CCmax_new > corr_thres_Q15 ) {
+ CCmax_b = CCmax_new_b;
+ CCmax = CCmax_new;
+ lag = d;
+ CBimax = CBimax_new;
+ }
+ }
+
+ if( lag == -1 ) {
+ /* No suitable candidate found */
+ SKP_memset( pitch_out, 0, PITCH_EST_NB_SUBFR * sizeof( SKP_int ) );
+ *LTPCorr_Q15 = 0;
+ *lagIndex = 0;
+ *contourIndex = 0;
+ return 1;
+ }
+
+ if( Fs_kHz > 8 ) {
+
+ /******************************************************************************
+ ** Scale input signal down to avoid correlations measures from overflowing
+ *******************************************************************************/
+ /* find scaling as max scaling for each subframe */
+ shift = SKP_FIX_P_Ana_find_scaling( signal, frame_length, sf_length );
+ if( shift > 0 ) {
+ /* Move signal to scratch mem because the input signal should be unchanged */
+ /* Reuse the 32 bit scratch mem vector, use a 16 bit pointer from now */
+ input_signal_ptr = (SKP_int16*)scratch_mem;
+ for( i = 0; i < frame_length; i++ ) {
+ input_signal_ptr[ i ] = SKP_RSHIFT( signal[ i ], shift );
+ }
+ } else {
+ input_signal_ptr = (SKP_int16*)signal;
+ }
+ /*********************************************************************************/
+
+ /* Search in original signal */
+
+ CBimax_old = CBimax;
+ /* Compensate for decimation */
+ SKP_assert( lag == SKP_SAT16( lag ) );
+ if( Fs_kHz == 12 ) {
+ lag = SKP_RSHIFT( SKP_SMULBB( lag, 3 ), 1 );
+ } else if( Fs_kHz == 16 ) {
+ lag = SKP_LSHIFT( lag, 1 );
+ } else {
+ lag = SKP_SMULBB( lag, 3 );
+ }
+
+ lag = SKP_LIMIT( lag, min_lag, max_lag );
+ start_lag = SKP_max_int( lag - 2, min_lag );
+ end_lag = SKP_min_int( lag + 2, max_lag );
+ lag_new = lag; /* to avoid undefined lag */
+ CBimax = 0; /* to avoid undefined lag */
+ SKP_assert( SKP_LSHIFT( CCmax, 13 ) >= 0 );
+ *LTPCorr_Q15 = (SKP_int)SKP_Silk_SQRT_APPROX( SKP_LSHIFT( CCmax, 13 ) ); /* Output normalized correlation */
+
+ CCmax = SKP_int32_MIN;
+ /* pitch lags according to second stage */
+ for( k = 0; k < PITCH_EST_NB_SUBFR; k++ ) {
+ pitch_out[ k ] = lag + 2 * SKP_Silk_CB_lags_stage2[ k ][ CBimax_old ];
+ }
+ /* Calculate the correlations and energies needed in stage 3 */
+ SKP_FIX_P_Ana_calc_corr_st3( crosscorr_st3, input_signal_ptr, start_lag, sf_length, complexity );
+ SKP_FIX_P_Ana_calc_energy_st3( energies_st3, input_signal_ptr, start_lag, sf_length, complexity );
+
+ lag_counter = 0;
+ SKP_assert( lag == SKP_SAT16( lag ) );
+ contour_bias = SKP_DIV32_16( PITCH_EST_FLATCONTOUR_BIAS_Q20, lag );
+
+ /* Setup cbk parameters acording to complexity setting */
+ cbk_size = (SKP_int)SKP_Silk_cbk_sizes_stage3[ complexity ];
+ cbk_offset = (SKP_int)SKP_Silk_cbk_offsets_stage3[ complexity ];
+
+ for( d = start_lag; d <= end_lag; d++ ) {
+ for( j = cbk_offset; j < ( cbk_offset + cbk_size ); j++ ) {
+ cross_corr = 0;
+ energy = 0;
+ for( k = 0; k < PITCH_EST_NB_SUBFR; k++ ) {
+ SKP_assert( PITCH_EST_NB_SUBFR == 4 );
+ energy += SKP_RSHIFT( energies_st3[ k ][ j ][ lag_counter ], 2 ); /* use mean, to avoid overflow */
+ SKP_assert( energy >= 0 );
+ cross_corr += SKP_RSHIFT( crosscorr_st3[ k ][ j ][ lag_counter ], 2 ); /* use mean, to avoid overflow */
+ }
+ if( cross_corr > 0 ) {
+ /* Divide cross_corr / energy and get result in Q15 */
+ lz = SKP_Silk_CLZ32( cross_corr );
+ /* Divide with result in Q13, cross_corr could be larger than energy */
+ lshift = SKP_LIMIT( lz - 1, 0, 13 );
+ CCmax_new = SKP_DIV32( SKP_LSHIFT( cross_corr, lshift ), SKP_RSHIFT( energy, 13 - lshift ) + 1 );
+ CCmax_new = SKP_SAT16( CCmax_new );
+ CCmax_new = SKP_SMULWB( cross_corr, CCmax_new );
+ /* Saturate */
+ if( CCmax_new > SKP_RSHIFT( SKP_int32_MAX, 3 ) ) {
+ CCmax_new = SKP_int32_MAX;
+ } else {
+ CCmax_new = SKP_LSHIFT( CCmax_new, 3 );
+ }
+ /* Reduce depending on flatness of contour */
+ diff = j - SKP_RSHIFT( PITCH_EST_NB_CBKS_STAGE3_MAX, 1 );
+ diff = SKP_MUL( diff, diff );
+ diff = SKP_int16_MAX - SKP_RSHIFT( SKP_MUL( contour_bias, diff ), 5 ); /* Q20 -> Q15 */
+ SKP_assert( diff == SKP_SAT16( diff ) );
+ CCmax_new = SKP_LSHIFT( SKP_SMULWB( CCmax_new, diff ), 1 );
+ } else {
+ CCmax_new = 0;
+ }
+
+ if( CCmax_new > CCmax ) {
+ CCmax = CCmax_new;
+ lag_new = d;
+ CBimax = j;
+ }
+ }
+ lag_counter++;
+ }
+
+ for( k = 0; k < PITCH_EST_NB_SUBFR; k++ ) {
+ pitch_out[ k ] = lag_new + SKP_Silk_CB_lags_stage3[ k ][ CBimax ];
+ }
+ *lagIndex = lag_new - min_lag;
+ *contourIndex = CBimax;
+ } else {
+ /* Save Lags and correlation */
+ CCmax = SKP_max( CCmax, 0 );
+ *LTPCorr_Q15 = (SKP_int)SKP_Silk_SQRT_APPROX( SKP_LSHIFT( CCmax, 13 ) ); /* Output normalized correlation */
+ for( k = 0; k < PITCH_EST_NB_SUBFR; k++ ) {
+ pitch_out[ k ] = lag + SKP_Silk_CB_lags_stage2[ k ][ CBimax ];
+ }
+ *lagIndex = lag - min_lag_8kHz;
+ *contourIndex = CBimax;
+ }
+ SKP_assert( *lagIndex >= 0 );
+ /* return as voiced */
+ return 0;
+}
+
+/*************************************************************************/
+/* Calculates the correlations used in stage 3 search. In order to cover */
+/* the whole lag codebook for all the searched offset lags (lag +- 2), */
+/*************************************************************************/
+void SKP_FIX_P_Ana_calc_corr_st3(
+ SKP_int32 cross_corr_st3[ PITCH_EST_NB_SUBFR ][ PITCH_EST_NB_CBKS_STAGE3_MAX ][ PITCH_EST_NB_STAGE3_LAGS ],/* (O) 3 DIM correlation array */
+ const SKP_int16 signal[], /* I vector to correlate */
+ SKP_int start_lag, /* I lag offset to search around */
+ SKP_int sf_length, /* I length of a 5 ms subframe */
+ SKP_int complexity /* I Complexity setting */
+)
+{
+ const SKP_int16 *target_ptr, *basis_ptr;
+ SKP_int32 cross_corr;
+ SKP_int i, j, k, lag_counter;
+ SKP_int cbk_offset, cbk_size, delta, idx;
+ SKP_int32 scratch_mem[ SCRATCH_SIZE ];
+
+ SKP_assert( complexity >= SigProc_PITCH_EST_MIN_COMPLEX );
+ SKP_assert( complexity <= SigProc_PITCH_EST_MAX_COMPLEX );
+
+ cbk_offset = SKP_Silk_cbk_offsets_stage3[ complexity ];
+ cbk_size = SKP_Silk_cbk_sizes_stage3[ complexity ];
+
+ target_ptr = &signal[ SKP_LSHIFT( sf_length, 2 ) ]; /* Pointer to middle of frame */
+ for( k = 0; k < PITCH_EST_NB_SUBFR; k++ ) {
+ lag_counter = 0;
+
+ /* Calculate the correlations for each subframe */
+ for( j = SKP_Silk_Lag_range_stage3[ complexity ][ k ][ 0 ]; j <= SKP_Silk_Lag_range_stage3[ complexity ][ k ][ 1 ]; j++ ) {
+ basis_ptr = target_ptr - ( start_lag + j );
+ cross_corr = SKP_Silk_inner_prod_aligned( (SKP_int16*)target_ptr, (SKP_int16*)basis_ptr, sf_length );
+ SKP_assert( lag_counter < SCRATCH_SIZE );
+ scratch_mem[ lag_counter ] = cross_corr;
+ lag_counter++;
+ }
+
+ delta = SKP_Silk_Lag_range_stage3[ complexity ][ k ][ 0 ];
+ for( i = cbk_offset; i < ( cbk_offset + cbk_size ); i++ ) {
+ /* Fill out the 3 dim array that stores the correlations for */
+ /* each code_book vector for each start lag */
+ idx = SKP_Silk_CB_lags_stage3[ k ][ i ] - delta;
+ for( j = 0; j < PITCH_EST_NB_STAGE3_LAGS; j++ ) {
+ SKP_assert( idx + j < SCRATCH_SIZE );
+ SKP_assert( idx + j < lag_counter );
+ cross_corr_st3[ k ][ i ][ j ] = scratch_mem[ idx + j ];
+ }
+ }
+ target_ptr += sf_length;
+ }
+}
+
+/********************************************************************/
+/* Calculate the energies for first two subframes. The energies are */
+/* calculated recursively. */
+/********************************************************************/
+void SKP_FIX_P_Ana_calc_energy_st3(
+ SKP_int32 energies_st3[ PITCH_EST_NB_SUBFR ][ PITCH_EST_NB_CBKS_STAGE3_MAX ][ PITCH_EST_NB_STAGE3_LAGS ],/* (O) 3 DIM energy array */
+ const SKP_int16 signal[], /* I vector to calc energy in */
+ SKP_int start_lag, /* I lag offset to search around */
+ SKP_int sf_length, /* I length of one 5 ms subframe */
+ SKP_int complexity /* I Complexity setting */
+)
+{
+ const SKP_int16 *target_ptr, *basis_ptr;
+ SKP_int32 energy;
+ SKP_int k, i, j, lag_counter;
+ SKP_int cbk_offset, cbk_size, delta, idx;
+ SKP_int32 scratch_mem[ SCRATCH_SIZE ];
+
+ SKP_assert( complexity >= SigProc_PITCH_EST_MIN_COMPLEX );
+ SKP_assert( complexity <= SigProc_PITCH_EST_MAX_COMPLEX );
+
+ cbk_offset = SKP_Silk_cbk_offsets_stage3[ complexity ];
+ cbk_size = SKP_Silk_cbk_sizes_stage3[ complexity ];
+
+ target_ptr = &signal[ SKP_LSHIFT( sf_length, 2 ) ];
+ for( k = 0; k < PITCH_EST_NB_SUBFR; k++ ) {
+ lag_counter = 0;
+
+ /* Calculate the energy for first lag */
+ basis_ptr = target_ptr - ( start_lag + SKP_Silk_Lag_range_stage3[ complexity ][ k ][ 0 ] );
+ energy = SKP_Silk_inner_prod_aligned( basis_ptr, basis_ptr, sf_length );
+ SKP_assert( energy >= 0 );
+ scratch_mem[ lag_counter ] = energy;
+ lag_counter++;
+
+ for( i = 1; i < ( SKP_Silk_Lag_range_stage3[ complexity ][ k ][ 1 ] - SKP_Silk_Lag_range_stage3[ complexity ][ k ][ 0 ] + 1 ); i++ ) {
+ /* remove part outside new window */
+ energy -= SKP_SMULBB( basis_ptr[ sf_length - i ], basis_ptr[ sf_length - i ] );
+ SKP_assert( energy >= 0 );
+
+ /* add part that comes into window */
+ energy = SKP_ADD_SAT32( energy, SKP_SMULBB( basis_ptr[ -i ], basis_ptr[ -i ] ) );
+ SKP_assert( energy >= 0 );
+ SKP_assert( lag_counter < SCRATCH_SIZE );
+ scratch_mem[ lag_counter ] = energy;
+ lag_counter++;
+ }
+
+ delta = SKP_Silk_Lag_range_stage3[ complexity ][ k ][ 0 ];
+ for( i = cbk_offset; i < ( cbk_offset + cbk_size ); i++ ) {
+ /* Fill out the 3 dim array that stores the correlations for */
+ /* each code_book vector for each start lag */
+ idx = SKP_Silk_CB_lags_stage3[ k ][ i ] - delta;
+ for( j = 0; j < PITCH_EST_NB_STAGE3_LAGS; j++ ) {
+ SKP_assert( idx + j < SCRATCH_SIZE );
+ SKP_assert( idx + j < lag_counter );
+ energies_st3[ k ][ i ][ j ] = scratch_mem[ idx + j ];
+ SKP_assert( energies_st3[ k ][ i ][ j ] >= 0.0f );
+ }
+ }
+ target_ptr += sf_length;
+ }
+}
+
+SKP_int32 SKP_FIX_P_Ana_find_scaling(
+ const SKP_int16 *signal,
+ const SKP_int signal_length,
+ const SKP_int sum_sqr_len
+)
+{
+ SKP_int32 nbits, x_max;
+
+ x_max = SKP_Silk_int16_array_maxabs( signal, signal_length );
+
+ if( x_max < SKP_int16_MAX ) {
+ /* Number of bits needed for the sum of the squares */
+ nbits = 32 - SKP_Silk_CLZ32( SKP_SMULBB( x_max, x_max ) );
+ } else {
+ /* Here we don't know if x_max should have been SKP_int16_MAX + 1, so we expect the worst case */
+ nbits = 30;
+ }
+ nbits += 17 - SKP_Silk_CLZ16( sum_sqr_len );
+
+ /* Without a guarantee of saturation, we need to keep the 31st bit free */
+ if( nbits < 31 ) {
+ return 0;
+ } else {
+ return( nbits - 30 );
+ }
+}
--- /dev/null
+++ b/src/SKP_Silk_pitch_est_defines.h
@@ -1,0 +1,43 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#ifndef SIGPROCFIX_PITCH_EST_DEFINES_H
+#define SIGPROCFIX_PITCH_EST_DEFINES_H
+
+#include "SKP_Silk_SigProc_FIX.h"
+#include "SKP_Silk_common_pitch_est_defines.h"
+
+/************************************************************/
+/* Definitions For Fix pitch estimator */
+/************************************************************/
+
+#define PITCH_EST_SHORTLAG_BIAS_Q15 6554 /* 0.2f. for logarithmic weighting */
+#define PITCH_EST_PREVLAG_BIAS_Q15 6554 /* Prev lag bias */
+#define PITCH_EST_FLATCONTOUR_BIAS_Q20 52429 /* 0.05f */
+
+#endif
+
--- /dev/null
+++ b/src/SKP_Silk_pitch_est_tables.c
@@ -1,0 +1,89 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_typedef.h"
+#include "SKP_Silk_pitch_est_defines.h"
+
+/********************************************************/
+/* Auto Generated File from generate_pitch_est_tables.m */
+/********************************************************/
+
+const SKP_int16 SKP_Silk_CB_lags_stage2[PITCH_EST_NB_SUBFR][PITCH_EST_NB_CBKS_STAGE2_EXT] =
+{
+ {0, 2,-1,-1,-1, 0, 0, 1, 1, 0, 1},
+ {0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0},
+ {0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0},
+ {0,-1, 2, 1, 0, 1, 1, 0, 0,-1,-1}
+};
+
+const SKP_int16 SKP_Silk_CB_lags_stage3[PITCH_EST_NB_SUBFR][PITCH_EST_NB_CBKS_STAGE3_MAX] =
+{
+ {-9,-7,-6,-5,-5,-4,-4,-3,-3,-2,-2,-2,-1,-1,-1, 0, 0, 0, 1, 1, 0, 1, 2, 2, 2, 3, 3, 4, 4, 5, 6, 5, 6, 8},
+ {-3,-2,-2,-2,-1,-1,-1,-1,-1, 0, 0,-1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 1, 0, 1, 1, 2, 1, 2, 2, 2, 2, 3},
+ { 3, 3, 2, 2, 2, 2, 1, 2, 1, 1, 0, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0,-1, 0, 0,-1,-1,-1,-1,-1,-2,-2,-2},
+ { 9, 8, 6, 5, 6, 5, 4, 4, 3, 3, 2, 2, 2, 1, 0, 1, 1, 0, 0, 0,-1,-1,-1,-2,-2,-2,-3,-3,-4,-4,-5,-5,-6,-7}
+ };
+
+const SKP_int16 SKP_Silk_Lag_range_stage3[ SigProc_PITCH_EST_MAX_COMPLEX + 1 ] [ PITCH_EST_NB_SUBFR ][ 2 ] =
+{
+ /* Lags to search for low number of stage3 cbks */
+ {
+ {-2,6},
+ {-1,5},
+ {-1,5},
+ {-2,7}
+ },
+ /* Lags to search for middle number of stage3 cbks */
+ {
+ {-4,8},
+ {-1,6},
+ {-1,6},
+ {-4,9}
+ },
+ /* Lags to search for max number of stage3 cbks */
+ {
+ {-9,12},
+ {-3,7},
+ {-2,7},
+ {-7,13}
+ }
+};
+
+const SKP_int16 SKP_Silk_cbk_sizes_stage3[SigProc_PITCH_EST_MAX_COMPLEX + 1] =
+{
+ PITCH_EST_NB_CBKS_STAGE3_MIN,
+ PITCH_EST_NB_CBKS_STAGE3_MID,
+ PITCH_EST_NB_CBKS_STAGE3_MAX
+};
+
+const SKP_int16 SKP_Silk_cbk_offsets_stage3[SigProc_PITCH_EST_MAX_COMPLEX + 1] =
+{
+ ((PITCH_EST_NB_CBKS_STAGE3_MAX - PITCH_EST_NB_CBKS_STAGE3_MIN) >> 1),
+ ((PITCH_EST_NB_CBKS_STAGE3_MAX - PITCH_EST_NB_CBKS_STAGE3_MID) >> 1),
+ 0
+};
+
--- /dev/null
+++ b/src/SKP_Silk_prefilter_FIX.c
@@ -1,0 +1,166 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_main_FIX.h"
+#include "SKP_Silk_perceptual_parameters_FIX.h"
+
+/* SKP_Silk_prefilter. Prefilter for finding Quantizer input signal */
+SKP_INLINE void SKP_Silk_prefilt_FIX(
+ SKP_Silk_prefilter_state_FIX *P, /* I/O state */
+ SKP_int32 st_res_Q12[], /* I short term residual signal */
+ SKP_int16 xw[], /* O prefiltered signal */
+ SKP_int32 HarmShapeFIRPacked_Q12, /* I Harmonic shaping coeficients */
+ SKP_int Tilt_Q14, /* I Tilt shaping coeficient */
+ SKP_int32 LF_shp_Q14, /* I Low-frequancy shaping coeficients*/
+ SKP_int lag, /* I Lag for harmonic shaping */
+ SKP_int length /* I Length of signals */
+);
+
+void SKP_Silk_prefilter_FIX(
+ SKP_Silk_encoder_state_FIX *psEnc, /* I/O Encoder state FIX */
+ const SKP_Silk_encoder_control_FIX *psEncCtrl, /* I Encoder control FIX */
+ SKP_int16 xw[], /* O Weighted signal */
+ const SKP_int16 x[] /* I Speech signal */
+)
+{
+ SKP_Silk_prefilter_state_FIX *P = &psEnc->sPrefilt;
+ SKP_int j, k, lag;
+ SKP_int32 tmp_32, B_Q12;
+ const SKP_int16 *AR1_shp_Q13;
+ const SKP_int16 *px;
+ SKP_int16 *pxw, *pst_res;
+ SKP_int HarmShapeGain_Q12, Tilt_Q14, LF_shp_Q14;
+ SKP_int32 HarmShapeFIRPacked_Q12;
+ SKP_int32 x_filt_Q12[ MAX_FRAME_LENGTH / NB_SUBFR ], filterState[ MAX_LPC_ORDER ];
+ SKP_int16 st_res[ ( MAX_FRAME_LENGTH / NB_SUBFR ) + MAX_LPC_ORDER ];
+
+ /* Setup pointers */
+ px = x;
+ pxw = xw;
+ lag = P->lagPrev;
+ for( k = 0; k < NB_SUBFR; k++ ) {
+ /* Update Variables that change per sub frame */
+ if( psEncCtrl->sCmn.sigtype == SIG_TYPE_VOICED ) {
+ lag = psEncCtrl->sCmn.pitchL[ k ];
+ }
+
+ /* Noise shape parameters */
+ HarmShapeGain_Q12 = SKP_SMULWB( psEncCtrl->HarmShapeGain_Q14[ k ], 16384 - psEncCtrl->HarmBoost_Q14[ k ] );
+ SKP_assert( HarmShapeGain_Q12 >= 0 );
+ HarmShapeFIRPacked_Q12 = SKP_RSHIFT( HarmShapeGain_Q12, 2 );
+ HarmShapeFIRPacked_Q12 |= SKP_LSHIFT( ( SKP_int32 )SKP_RSHIFT( HarmShapeGain_Q12, 1 ), 16 );
+ Tilt_Q14 = psEncCtrl->Tilt_Q14[ k ];
+ LF_shp_Q14 = psEncCtrl->LF_shp_Q14[ k ];
+ AR1_shp_Q13 = &psEncCtrl->AR1_Q13[ k * SHAPE_LPC_ORDER_MAX ];
+
+ /* Short term FIR filtering*/
+ SKP_memset( filterState, 0, psEnc->sCmn.shapingLPCOrder * sizeof( SKP_int32 ) );
+ SKP_Silk_MA_Prediction_Q13( px - psEnc->sCmn.shapingLPCOrder, AR1_shp_Q13, filterState,
+ st_res, psEnc->sCmn.subfr_length + psEnc->sCmn.shapingLPCOrder, psEnc->sCmn.shapingLPCOrder );
+
+ pst_res = st_res + psEnc->sCmn.shapingLPCOrder; /* Point to first sample */
+
+ /* reduce (mainly) low frequencies during harmonic emphasis */
+ B_Q12 = SKP_RSHIFT_ROUND( psEncCtrl->GainsPre_Q14[ k ], 2 );
+ tmp_32 = SKP_SMLABB( INPUT_TILT_Q26, psEncCtrl->HarmBoost_Q14[ k ], HarmShapeGain_Q12 ); /* Q26 */
+ tmp_32 = SKP_SMLABB( tmp_32, psEncCtrl->coding_quality_Q14, HIGH_RATE_INPUT_TILT_Q12 ); /* Q26 */
+ tmp_32 = SKP_SMULWB( tmp_32, -psEncCtrl->GainsPre_Q14[ k ] ); /* Q24 */
+ tmp_32 = SKP_RSHIFT_ROUND( tmp_32, 12 ); /* Q12 */
+ B_Q12 |= SKP_LSHIFT( SKP_SAT16( tmp_32 ), 16 );
+
+ /* NOTE: the code below loads two int16 values in an int32, and multiplies each using the */
+ /* SMLABB and SMLABT instructions. On a big-endian CPU the two int16 variables would be */
+ /* loaded in reverse order and the code will give the wrong result. In that case swapping */
+ /* the SMLABB and SMLABT instructions should solve the problem. */
+ x_filt_Q12[ 0 ] = SKP_SMLABT( SKP_SMULBB( pst_res[ 0 ], B_Q12 ), P->sHarmHP, B_Q12 );
+ for( j = 1; j < psEnc->sCmn.subfr_length; j++ ) {
+ x_filt_Q12[ j ] = SKP_SMLABT( SKP_SMULBB( pst_res[ j ], B_Q12 ), pst_res[ j - 1 ], B_Q12 );
+ }
+ P->sHarmHP = pst_res[ psEnc->sCmn.subfr_length - 1 ];
+
+ SKP_Silk_prefilt_FIX( P, x_filt_Q12, pxw, HarmShapeFIRPacked_Q12, Tilt_Q14,
+ LF_shp_Q14, lag, psEnc->sCmn.subfr_length );
+
+ px += psEnc->sCmn.subfr_length;
+ pxw += psEnc->sCmn.subfr_length;
+ }
+
+ P->lagPrev = psEncCtrl->sCmn.pitchL[ NB_SUBFR - 1 ];
+}
+
+/* SKP_Silk_prefilter. Prefilter for finding Quantizer input signal */
+SKP_INLINE void SKP_Silk_prefilt_FIX(
+ SKP_Silk_prefilter_state_FIX *P, /* I/O state */
+ SKP_int32 st_res_Q12[], /* I short term residual signal */
+ SKP_int16 xw[], /* O prefiltered signal */
+ SKP_int32 HarmShapeFIRPacked_Q12, /* I Harmonic shaping coeficients */
+ SKP_int Tilt_Q14, /* I Tilt shaping coeficient */
+ SKP_int32 LF_shp_Q14, /* I Low-frequancy shaping coeficients*/
+ SKP_int lag, /* I Lag for harmonic shaping */
+ SKP_int length /* I Length of signals */
+)
+{
+ SKP_int i, idx, LTP_shp_buf_idx;
+ SKP_int32 n_LTP_Q12, n_Tilt_Q10, n_LF_Q10;
+ SKP_int32 sLF_MA_shp_Q12, sLF_AR_shp_Q12;
+ SKP_int16 *LTP_shp_buf;
+
+ /* To speed up use temp variables instead of using the struct */
+ LTP_shp_buf = P->sLTP_shp1;
+ LTP_shp_buf_idx = P->sLTP_shp_buf_idx1;
+ sLF_AR_shp_Q12 = P->sLF_AR_shp1_Q12;
+ sLF_MA_shp_Q12 = P->sLF_MA_shp1_Q12;
+
+ for( i = 0; i < length; i++ ) {
+ if( lag > 0 ) {
+ /* unrolled loop */
+ SKP_assert( HARM_SHAPE_FIR_TAPS == 3 );
+ idx = lag + LTP_shp_buf_idx;
+ n_LTP_Q12 = SKP_SMULBB( LTP_shp_buf[ ( idx - HARM_SHAPE_FIR_TAPS / 2 - 1) & LTP_MASK ], HarmShapeFIRPacked_Q12 );
+ n_LTP_Q12 = SKP_SMLABT( n_LTP_Q12, LTP_shp_buf[ ( idx - HARM_SHAPE_FIR_TAPS / 2 ) & LTP_MASK ], HarmShapeFIRPacked_Q12 );
+ n_LTP_Q12 = SKP_SMLABB( n_LTP_Q12, LTP_shp_buf[ ( idx - HARM_SHAPE_FIR_TAPS / 2 + 1) & LTP_MASK ], HarmShapeFIRPacked_Q12 );
+ } else {
+ n_LTP_Q12 = 0;
+ }
+
+ n_LF_Q10 = SKP_SMLAWB( SKP_SMULWT( sLF_AR_shp_Q12, LF_shp_Q14 ), sLF_MA_shp_Q12, LF_shp_Q14 );
+ n_Tilt_Q10 = SKP_SMULWB( sLF_AR_shp_Q12, Tilt_Q14 );
+
+ sLF_AR_shp_Q12 = SKP_SUB32( st_res_Q12[ i ], SKP_LSHIFT( n_Tilt_Q10, 2 ) );
+ sLF_MA_shp_Q12 = SKP_SUB32( sLF_AR_shp_Q12, SKP_LSHIFT( n_LF_Q10, 2 ) );
+
+ LTP_shp_buf_idx = ( LTP_shp_buf_idx - 1 ) & LTP_MASK;
+ LTP_shp_buf[ LTP_shp_buf_idx ] = ( SKP_int16 )SKP_SAT16( SKP_RSHIFT_ROUND( sLF_MA_shp_Q12, 12 ) );
+
+ xw[i] = ( SKP_int16 )SKP_SAT16( SKP_RSHIFT_ROUND( SKP_SUB32( sLF_MA_shp_Q12, n_LTP_Q12 ), 12 ) );
+ }
+
+ /* Copy temp variable back to state */
+ P->sLF_AR_shp1_Q12 = sLF_AR_shp_Q12;
+ P->sLF_MA_shp1_Q12 = sLF_MA_shp_Q12;
+ P->sLTP_shp_buf_idx1 = LTP_shp_buf_idx;
+}
--- /dev/null
+++ b/src/SKP_Silk_process_NLSFs_FIX.c
@@ -1,0 +1,127 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_main_FIX.h"
+
+/* Limit, stabilize, convert and quantize NLSFs. */
+void SKP_Silk_process_NLSFs_FIX(
+ SKP_Silk_encoder_state_FIX *psEnc, /* I/O Encoder state FIX */
+ SKP_Silk_encoder_control_FIX *psEncCtrl, /* I/O Encoder control FIX */
+ SKP_int *pNLSF_Q15 /* I/O Normalized LSFs (quant out) (0 - (2^15-1)) */
+)
+{
+ SKP_int doInterpolate;
+ SKP_int pNLSFW_Q6[ MAX_LPC_ORDER ];
+ SKP_int NLSF_mu_Q15, NLSF_mu_fluc_red_Q16;
+ SKP_int32 i_sqr_Q15;
+ const SKP_Silk_NLSF_CB_struct *psNLSF_CB;
+
+ /* Used only for NLSF interpolation */
+ SKP_int pNLSF0_temp_Q15[ MAX_LPC_ORDER ];
+ SKP_int pNLSFW0_temp_Q6[ MAX_LPC_ORDER ];
+ SKP_int i;
+
+ SKP_assert( psEnc->speech_activity_Q8 >= 0 );
+ SKP_assert( psEnc->speech_activity_Q8 <= 256 );
+ SKP_assert( psEncCtrl->sparseness_Q8 >= 0 );
+ SKP_assert( psEncCtrl->sparseness_Q8 <= 256 );
+ SKP_assert( psEncCtrl->sCmn.sigtype == SIG_TYPE_VOICED || psEncCtrl->sCmn.sigtype == SIG_TYPE_UNVOICED );
+
+ /***********************/
+ /* Calculate mu values */
+ /***********************/
+ if( psEncCtrl->sCmn.sigtype == SIG_TYPE_VOICED ) {
+ /* NLSF_mu = 0.002f - 0.001f * psEnc->speech_activity; */
+ /* NLSF_mu_fluc_red = 0.1f - 0.05f * psEnc->speech_activity; */
+ NLSF_mu_Q15 = SKP_SMLAWB( 66, -8388, psEnc->speech_activity_Q8 );
+ NLSF_mu_fluc_red_Q16 = SKP_SMLAWB( 6554, -838848, psEnc->speech_activity_Q8 );
+ } else {
+ /* NLSF_mu = 0.005f - 0.004f * psEnc->speech_activity; */
+ /* NLSF_mu_fluc_red = 0.2f - 0.1f * psEnc->speech_activity - 0.1f * psEncCtrl->sparseness; */
+ NLSF_mu_Q15 = SKP_SMLAWB( 164, -33554, psEnc->speech_activity_Q8 );
+ NLSF_mu_fluc_red_Q16 = SKP_SMLAWB( 13107, -1677696, psEnc->speech_activity_Q8 + psEncCtrl->sparseness_Q8 );
+ }
+ SKP_assert( NLSF_mu_Q15 >= 0 );
+ SKP_assert( NLSF_mu_Q15 <= 164 );
+ SKP_assert( NLSF_mu_fluc_red_Q16 >= 0 );
+ SKP_assert( NLSF_mu_fluc_red_Q16 <= 13107 );
+
+ NLSF_mu_Q15 = SKP_max( NLSF_mu_Q15, 1 );
+
+ /* Calculate NLSF weights */
+ TIC(NLSF_weights_FIX)
+ SKP_Silk_NLSF_VQ_weights_laroia( pNLSFW_Q6, pNLSF_Q15, psEnc->sCmn.predictLPCOrder );
+ TOC(NLSF_weights_FIX)
+
+ /* Update NLSF weights for interpolated NLSFs */
+ doInterpolate = ( psEnc->sCmn.useInterpolatedNLSFs == 1 ) && ( psEncCtrl->sCmn.NLSFInterpCoef_Q2 < ( 1 << 2 ) );
+ if( doInterpolate ) {
+
+ /* Calculate the interpolated NLSF vector for the first half */
+ SKP_Silk_interpolate( pNLSF0_temp_Q15, psEnc->sPred.prev_NLSFq_Q15, pNLSF_Q15,
+ psEncCtrl->sCmn.NLSFInterpCoef_Q2, psEnc->sCmn.predictLPCOrder );
+
+ /* Calculate first half NLSF weights for the interpolated NLSFs */
+ TIC(NLSF_weights_FIX)
+ SKP_Silk_NLSF_VQ_weights_laroia( pNLSFW0_temp_Q6, pNLSF0_temp_Q15, psEnc->sCmn.predictLPCOrder );
+ TOC(NLSF_weights_FIX)
+
+ /* Update NLSF weights with contribution from first half */
+ i_sqr_Q15 = SKP_LSHIFT( SKP_SMULBB( psEncCtrl->sCmn.NLSFInterpCoef_Q2, psEncCtrl->sCmn.NLSFInterpCoef_Q2 ), 11 );
+ for( i = 0; i < psEnc->sCmn.predictLPCOrder; i++ ) {
+ pNLSFW_Q6[ i ] = SKP_SMLAWB( SKP_RSHIFT( pNLSFW_Q6[ i ], 1 ), pNLSFW0_temp_Q6[ i ], i_sqr_Q15 );
+ SKP_assert( pNLSFW_Q6[ i ] <= SKP_int16_MAX );
+ SKP_assert( pNLSFW_Q6[ i ] >= 1 );
+ }
+ }
+
+ /* Set pointer to the NLSF codebook for the current signal type and LPC order */
+ psNLSF_CB = psEnc->sCmn.psNLSF_CB[ psEncCtrl->sCmn.sigtype ];
+
+ /* Quantize NLSF parameters given the trained NLSF codebooks */
+ TIC(MSVQ_encode_FIX)
+ SKP_Silk_NLSF_MSVQ_encode_FIX( psEncCtrl->sCmn.NLSFIndices, pNLSF_Q15, psNLSF_CB,
+ psEnc->sPred.prev_NLSFq_Q15, pNLSFW_Q6, NLSF_mu_Q15, NLSF_mu_fluc_red_Q16,
+ psEnc->sCmn.NLSF_MSVQ_Survivors, psEnc->sCmn.predictLPCOrder, psEnc->sCmn.first_frame_after_reset );
+ TOC(MSVQ_encode_FIX)
+
+ /* Convert quantized NLSFs back to LPC coefficients */
+ SKP_Silk_NLSF2A_stable( psEncCtrl->PredCoef_Q12[ 1 ], pNLSF_Q15, psEnc->sCmn.predictLPCOrder );
+
+ if( doInterpolate ) {
+ /* Calculate the interpolated, quantized LSF vector for the first half */
+ SKP_Silk_interpolate( pNLSF0_temp_Q15, psEnc->sPred.prev_NLSFq_Q15, pNLSF_Q15,
+ psEncCtrl->sCmn.NLSFInterpCoef_Q2, psEnc->sCmn.predictLPCOrder );
+
+ /* Convert back to LPC coefficients */
+ SKP_Silk_NLSF2A_stable( psEncCtrl->PredCoef_Q12[ 0 ], pNLSF0_temp_Q15, psEnc->sCmn.predictLPCOrder );
+
+ } else {
+ /* Copy LPC coefficients for first half from second half */
+ SKP_memcpy( psEncCtrl->PredCoef_Q12[ 0 ], psEncCtrl->PredCoef_Q12[ 1 ], psEnc->sCmn.predictLPCOrder * sizeof( SKP_int16 ) );
+ }
+}
--- /dev/null
+++ b/src/SKP_Silk_process_gains_FIX.c
@@ -1,0 +1,114 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_main_FIX.h"
+
+/* Processing of gains */
+void SKP_Silk_process_gains_FIX(
+ SKP_Silk_encoder_state_FIX *psEnc, /* I/O Encoder state_FIX */
+ SKP_Silk_encoder_control_FIX *psEncCtrl /* I/O Encoder control_FIX */
+)
+{
+ SKP_Silk_shape_state_FIX *psShapeSt = &psEnc->sShape;
+ SKP_int k;
+ SKP_int32 s_Q16, InvMaxSqrVal_Q16, gain, gain_squared, ResNrg, ResNrgPart;
+
+ /* Gain reduction when LTP coding gain is high */
+ if( psEncCtrl->sCmn.sigtype == SIG_TYPE_VOICED ) {
+ /*s = -0.5f * SKP_sigmoid( 0.25f * ( psEncCtrl->LTPredCodGain - 12.0f ) ); */
+ s_Q16 = -SKP_Silk_sigm_Q15( SKP_RSHIFT_ROUND( psEncCtrl->LTPredCodGain_Q7 - (12 << 7), 4 ) );
+ for( k = 0; k < NB_SUBFR; k++ ) {
+ psEncCtrl->Gains_Q16[ k ] = SKP_SMLAWB( psEncCtrl->Gains_Q16[ k ], psEncCtrl->Gains_Q16[ k ], s_Q16 );
+ }
+ }
+
+ /* Limit the quantized signal */
+ /* 69 = 21.0f + 16/0.33 */
+ InvMaxSqrVal_Q16 = SKP_DIV32_16( SKP_Silk_log2lin(
+ SKP_SMULWB( (69 << 7) - psEncCtrl->current_SNR_dB_Q7, SKP_FIX_CONST( 0.33, 16 )) ), psEnc->sCmn.subfr_length );
+
+ for( k = 0; k < NB_SUBFR; k++ ) {
+ /* Soft limit on ratio residual energy and squared gains */
+ ResNrg = psEncCtrl->ResNrg[ k ];
+ ResNrgPart = SKP_SMULWW( ResNrg, InvMaxSqrVal_Q16 );
+ if( psEncCtrl->ResNrgQ[ k ] > 0 ) {
+ if( psEncCtrl->ResNrgQ[ k ] < 32 ) {
+ ResNrgPart = SKP_RSHIFT_ROUND( ResNrgPart, psEncCtrl->ResNrgQ[ k ] );
+ } else {
+ ResNrgPart = 0;
+ }
+ } else if( psEncCtrl->ResNrgQ[k] != 0 ) {
+ if( ResNrgPart > SKP_RSHIFT( SKP_int32_MAX, -psEncCtrl->ResNrgQ[ k ] ) ) {
+ ResNrgPart = SKP_int32_MAX;
+ } else {
+ ResNrgPart = SKP_LSHIFT( ResNrgPart, -psEncCtrl->ResNrgQ[ k ] );
+ }
+ }
+ gain = psEncCtrl->Gains_Q16[ k ];
+ gain_squared = SKP_ADD_SAT32( ResNrgPart, SKP_SMMUL( gain, gain ) );
+ if( gain_squared < SKP_int16_MAX ) {
+ /* recalculate with higher precision */
+ gain_squared = SKP_SMLAWW( SKP_LSHIFT( ResNrgPart, 16 ), gain, gain );
+ SKP_assert( gain_squared > 0 );
+ gain = SKP_Silk_SQRT_APPROX( gain_squared ); /* Q8 */
+ psEncCtrl->Gains_Q16[ k ] = SKP_LSHIFT_SAT32( gain, 8 ); /* Q16 */
+ } else {
+ gain = SKP_Silk_SQRT_APPROX( gain_squared ); /* Q0 */
+ psEncCtrl->Gains_Q16[ k ] = SKP_LSHIFT_SAT32( gain, 16 ); /* Q16 */
+ }
+ }
+
+ /* Noise shaping quantization */
+ SKP_Silk_gains_quant( psEncCtrl->sCmn.GainsIndices, psEncCtrl->Gains_Q16,
+ &psShapeSt->LastGainIndex, psEnc->sCmn.nFramesInPayloadBuf );
+ /* Set quantizer offset for voiced signals. Larger offset when LTP coding gain is low or tilt is high (ie low-pass) */
+ if( psEncCtrl->sCmn.sigtype == SIG_TYPE_VOICED ) {
+ if( psEncCtrl->LTPredCodGain_Q7 + SKP_RSHIFT( psEncCtrl->input_tilt_Q15, 8 ) > ( 1 << 7 ) ) {
+ psEncCtrl->sCmn.QuantOffsetType = 0;
+ } else {
+ psEncCtrl->sCmn.QuantOffsetType = 1;
+ }
+ }
+
+ /* Quantizer boundary adjustment */
+ if( psEncCtrl->sCmn.sigtype == SIG_TYPE_VOICED ) {
+ psEncCtrl->Lambda_Q10 = SKP_FIX_CONST( 1.3, 10 )
+ - SKP_SMULWB( SKP_FIX_CONST( 0.5, 18 ), psEnc->speech_activity_Q8 )
+ - SKP_SMULWB( SKP_FIX_CONST( 0.3, 12 ), psEncCtrl->input_quality_Q14 )
+ + SKP_SMULBB( SKP_FIX_CONST( 0.2, 10 ), psEncCtrl->sCmn.QuantOffsetType )
+ - SKP_SMULWB( SKP_FIX_CONST( 0.1, 12 ), psEncCtrl->coding_quality_Q14 );
+ } else {
+ psEncCtrl->Lambda_Q10 = SKP_FIX_CONST( 1.3, 10 )
+ - SKP_SMULWB( SKP_FIX_CONST( 0.5, 18 ), psEnc->speech_activity_Q8 )
+ - SKP_SMULWB( SKP_FIX_CONST( 0.4, 12 ), psEncCtrl->input_quality_Q14 )
+ + SKP_SMULBB( SKP_FIX_CONST( 0.4, 10 ), psEncCtrl->sCmn.QuantOffsetType )
+ - SKP_SMULWB( SKP_FIX_CONST( 0.1, 12 ), psEncCtrl->coding_quality_Q14 );
+ }
+ SKP_assert( psEncCtrl->Lambda_Q10 >= 0 );
+ SKP_assert( psEncCtrl->Lambda_Q10 < SKP_FIX_CONST( 2, 10 ) );
+
+}
--- /dev/null
+++ b/src/SKP_Silk_pulses_to_bytes.c
@@ -1,0 +1,77 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+/*
+ * File Name: SKP_Silk_pulses_to_bytes.c
+ */
+
+#include <stdlib.h>
+#include "SKP_Silk_main.h"
+
+/* nBytes = sum_over_shell_blocks( POLY_FIT_0 + POLY_FIT_1 * sum_abs_val + POLY_FIT_2 * sum_abs_val^2 ) */
+#define POLY_FIT_0_Q15 12520
+#define POLY_FIT_1_Q15 15862
+#define POLY_FIT_2_Q20 -9222 // ToDo better training with
+
+/* Predict number of bytes used to encode q */
+SKP_int SKP_Silk_pulses_to_bytes( /* O Return value, predicted number of bytes used to encode q */
+ SKP_Silk_encoder_state *psEncC, /* I/O Encoder State */
+ SKP_int q[] /* I Pulse signal */
+)
+{
+ SKP_int i, j, iter, *q_ptr;
+ SKP_int32 sum_abs_val, nBytes, acc_nBytes;
+ /* Take the absolute value of the pulses */
+ iter = psEncC->frame_length / SHELL_CODEC_FRAME_LENGTH;
+
+ /* Calculate rate as a nonlinaer mapping of sum abs value of each Shell block */
+ q_ptr = q;
+ acc_nBytes = 0;
+ for( j = 0; j < iter; j++ ) {
+ sum_abs_val = 0;
+ for(i = 0; i < SHELL_CODEC_FRAME_LENGTH; i+=4){
+ sum_abs_val += SKP_abs( q_ptr[ i + 0 ] );
+ sum_abs_val += SKP_abs( q_ptr[ i + 1 ] );
+ sum_abs_val += SKP_abs( q_ptr[ i + 2 ] );
+ sum_abs_val += SKP_abs( q_ptr[ i + 3 ] );
+ }
+ /* Calculate nBytes used for thi sshell frame */
+ nBytes = SKP_SMULWB( SKP_SMULBB( sum_abs_val, sum_abs_val ), POLY_FIT_2_Q20 ); // Q4
+ nBytes = SKP_LSHIFT_SAT32( nBytes, 11 ); // Q15
+ nBytes += SKP_SMULBB( sum_abs_val, POLY_FIT_1_Q15 ); // Q15
+ nBytes += POLY_FIT_0_Q15; // Q15
+
+ acc_nBytes += nBytes;
+
+ q_ptr += SHELL_CODEC_FRAME_LENGTH; /* update pointer */
+ }
+
+ acc_nBytes = SKP_RSHIFT_ROUND( acc_nBytes, 15 ); // Q0
+ acc_nBytes = SKP_SAT16( acc_nBytes ); // just to be sure // Q0
+
+ return(( SKP_int )acc_nBytes);
+}
--- /dev/null
+++ b/src/SKP_Silk_quant_LTP_gains_FIX.c
@@ -1,0 +1,106 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_main_FIX.h"
+
+void SKP_Silk_quant_LTP_gains_FIX(
+ SKP_int16 B_Q14[], /* I/O (un)quantized LTP gains */
+ SKP_int cbk_index[], /* O Codebook Index */
+ SKP_int *periodicity_index, /* O Periodicity Index */
+ const SKP_int32 W_Q18[], /* I Error Weights in Q18 */
+ SKP_int mu_Q8, /* I Mu value (R/D tradeoff) */
+ SKP_int lowComplexity /* I Flag for low complexity */
+)
+{
+ SKP_int j, k, temp_idx[ NB_SUBFR ], cbk_size;
+ const SKP_uint16 *cdf_ptr;
+ const SKP_int16 *cl_ptr;
+ const SKP_int16 *cbk_ptr_Q14;
+ const SKP_int16 *b_Q14_ptr;
+ const SKP_int32 *W_Q18_ptr;
+ SKP_int32 rate_dist_subfr, rate_dist, min_rate_dist;
+
+
+
+ /***************************************************/
+ /* iterate over different codebooks with different */
+ /* rates/distortions, and choose best */
+ /***************************************************/
+ min_rate_dist = SKP_int32_MAX;
+ for( k = 0; k < 3; k++ ) {
+ cdf_ptr = SKP_Silk_LTP_gain_CDF_ptrs[ k ];
+ cl_ptr = SKP_Silk_LTP_gain_BITS_Q6_ptrs[ k ];
+ cbk_ptr_Q14 = SKP_Silk_LTP_vq_ptrs_Q14[ k ];
+ cbk_size = SKP_Silk_LTP_vq_sizes[ k ];
+
+ /* Setup pointer to first subframe */
+ W_Q18_ptr = W_Q18;
+ b_Q14_ptr = B_Q14;
+
+ rate_dist = 0;
+ for( j = 0; j < NB_SUBFR; j++ ) {
+
+ SKP_Silk_VQ_WMat_EC_FIX(
+ &temp_idx[ j ], /* O index of best codebook vector */
+ &rate_dist_subfr, /* O best weighted quantization error + mu * rate */
+ b_Q14_ptr, /* I input vector to be quantized */
+ W_Q18_ptr, /* I weighting matrix */
+ cbk_ptr_Q14, /* I codebook */
+ cl_ptr, /* I code length for each codebook vector */
+ mu_Q8, /* I tradeoff between weighted error and rate */
+ cbk_size /* I number of vectors in codebook */
+ );
+
+ rate_dist = SKP_ADD_POS_SAT32( rate_dist, rate_dist_subfr );
+
+ b_Q14_ptr += LTP_ORDER;
+ W_Q18_ptr += LTP_ORDER * LTP_ORDER;
+ }
+
+ /* Avoid never finding a codebook */
+ rate_dist = SKP_min( SKP_int32_MAX - 1, rate_dist );
+
+ if( rate_dist < min_rate_dist ) {
+ min_rate_dist = rate_dist;
+ SKP_memcpy( cbk_index, temp_idx, NB_SUBFR * sizeof( SKP_int ) );
+ *periodicity_index = k;
+ }
+
+ /* Break early in low-complexity mode if rate distortion is below threshold */
+ if( lowComplexity && ( rate_dist < SKP_Silk_LTP_gain_middle_avg_RD_Q14 ) ) {
+ break;
+ }
+ }
+
+ cbk_ptr_Q14 = SKP_Silk_LTP_vq_ptrs_Q14[ *periodicity_index ];
+ for( j = 0; j < NB_SUBFR; j++ ) {
+ for( k = 0; k < LTP_ORDER; k++ ) {
+ B_Q14[ j * LTP_ORDER + k ] = cbk_ptr_Q14[ SKP_MLA( k, cbk_index[ j ], LTP_ORDER ) ];
+ }
+ }
+}
+
--- /dev/null
+++ b/src/SKP_Silk_range_coder.c
@@ -1,0 +1,372 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_main.h"
+
+/* Range encoder for one symbol */
+void SKP_Silk_range_encoder(
+ SKP_Silk_range_coder_state *psRC, /* I/O compressor data structure */
+ const SKP_int data, /* I uncompressed data */
+ const SKP_uint16 prob[] /* I cumulative density functions */
+)
+{
+ SKP_uint32 low_Q16, high_Q16;
+ SKP_uint32 base_tmp, range_Q32;
+
+ /* Copy structure data */
+ SKP_uint32 base_Q32 = psRC->base_Q32;
+ SKP_uint32 range_Q16 = psRC->range_Q16;
+ SKP_int32 bufferIx = psRC->bufferIx;
+ SKP_uint8 *buffer = psRC->buffer;
+
+ if( psRC->error ) {
+ return;
+ }
+
+ /* Update interval */
+ low_Q16 = prob[ data ];
+ high_Q16 = prob[ data + 1 ];
+ base_tmp = base_Q32; /* save current base, to test for carry */
+ base_Q32 += SKP_MUL_uint( range_Q16, low_Q16 );
+ range_Q32 = SKP_MUL_uint( range_Q16, high_Q16 - low_Q16 );
+
+ /* Check for carry */
+ if( base_Q32 < base_tmp ) {
+ /* Propagate carry in buffer */
+ SKP_int bufferIx_tmp = bufferIx;
+ while( ( ++buffer[ --bufferIx_tmp ] ) == 0 );
+ }
+
+ /* Check normalization */
+ if( range_Q32 & 0xFF000000 ) {
+ /* No normalization */
+ range_Q16 = SKP_RSHIFT_uint( range_Q32, 16 );
+ } else {
+ if( range_Q32 & 0xFFFF0000 ) {
+ /* Normalization of 8 bits shift */
+ range_Q16 = SKP_RSHIFT_uint( range_Q32, 8 );
+ } else {
+ /* Normalization of 16 bits shift */
+ range_Q16 = range_Q32;
+ /* Make sure not to write beyond buffer */
+ if( bufferIx >= psRC->bufferLength ) {
+ psRC->error = RANGE_CODER_WRITE_BEYOND_BUFFER;
+ return;
+ }
+ /* Write one byte to buffer */
+ buffer[ bufferIx++ ] = (SKP_uint8)( SKP_RSHIFT_uint( base_Q32, 24 ) );
+ base_Q32 = SKP_LSHIFT_ovflw( base_Q32, 8 );
+ }
+ /* Make sure not to write beyond buffer */
+ if( bufferIx >= psRC->bufferLength ) {
+ psRC->error = RANGE_CODER_WRITE_BEYOND_BUFFER;
+ return;
+ }
+ /* Write one byte to buffer */
+ buffer[ bufferIx++ ] = (SKP_uint8)( SKP_RSHIFT_uint( base_Q32, 24 ) );
+ base_Q32 = SKP_LSHIFT_ovflw( base_Q32, 8 );
+ }
+
+ /* Copy structure data back */
+ psRC->base_Q32 = base_Q32;
+ psRC->range_Q16 = range_Q16;
+ psRC->bufferIx = bufferIx;
+}
+
+/* Range encoder for multiple symbols */
+void SKP_Silk_range_encoder_multi(
+ SKP_Silk_range_coder_state *psRC, /* I/O compressor data structure */
+ const SKP_int data[], /* I uncompressed data [nSymbols] */
+ const SKP_uint16 * const prob[], /* I cumulative density functions */
+ const SKP_int nSymbols /* I number of data symbols */
+)
+{
+ SKP_int k;
+ for( k = 0; k < nSymbols; k++ ) {
+ SKP_Silk_range_encoder( psRC, data[ k ], prob[ k ] );
+ }
+}
+
+/* Range decoder for one symbol */
+void SKP_Silk_range_decoder(
+ SKP_int data[], /* O uncompressed data */
+ SKP_Silk_range_coder_state *psRC, /* I/O compressor data structure */
+ const SKP_uint16 prob[], /* I cumulative density function */
+ SKP_int probIx /* I initial (middle) entry of cdf */
+)
+{
+ SKP_uint32 low_Q16, high_Q16;
+ SKP_uint32 base_tmp, range_Q32;
+
+ /* Copy structure data */
+ SKP_uint32 base_Q32 = psRC->base_Q32;
+ SKP_uint32 range_Q16 = psRC->range_Q16;
+ SKP_int32 bufferIx = psRC->bufferIx;
+ SKP_uint8 *buffer = &psRC->buffer[ 4 ];
+
+ if( psRC->error ) {
+ /* Set output to zero */
+ *data = 0;
+ return;
+ }
+
+ high_Q16 = prob[ probIx ];
+ base_tmp = SKP_MUL_uint( range_Q16, high_Q16 );
+ if( base_tmp > base_Q32 ) {
+ while( 1 ) {
+ low_Q16 = prob[ --probIx ];
+ base_tmp = SKP_MUL_uint( range_Q16, low_Q16 );
+ if( base_tmp <= base_Q32 ) {
+ break;
+ }
+ high_Q16 = low_Q16;
+ /* Test for out of range */
+ if( high_Q16 == 0 ) {
+ psRC->error = RANGE_CODER_CDF_OUT_OF_RANGE;
+ /* Set output to zero */
+ *data = 0;
+ return;
+ }
+ }
+ } else {
+ while( 1 ) {
+ low_Q16 = high_Q16;
+ high_Q16 = prob[ ++probIx ];
+ base_tmp = SKP_MUL_uint( range_Q16, high_Q16 );
+ if( base_tmp > base_Q32 ) {
+ probIx--;
+ break;
+ }
+ /* Test for out of range */
+ if( high_Q16 == 0xFFFF ) {
+ psRC->error = RANGE_CODER_CDF_OUT_OF_RANGE;
+ /* Set output to zero */
+ *data = 0;
+ return;
+ }
+ }
+ }
+ *data = probIx;
+ base_Q32 -= SKP_MUL_uint( range_Q16, low_Q16 );
+ range_Q32 = SKP_MUL_uint( range_Q16, high_Q16 - low_Q16 );
+
+ /* Check normalization */
+ if( range_Q32 & 0xFF000000 ) {
+ /* No normalization */
+ range_Q16 = SKP_RSHIFT_uint( range_Q32, 16 );
+ } else {
+ if( range_Q32 & 0xFFFF0000 ) {
+ /* Normalization of 8 bits shift */
+ range_Q16 = SKP_RSHIFT_uint( range_Q32, 8 );
+ /* Check for errors */
+ if( SKP_RSHIFT_uint( base_Q32, 24 ) ) {
+ psRC->error = RANGE_CODER_NORMALIZATION_FAILED;
+ /* Set output to zero */
+ *data = 0;
+ return;
+ }
+ } else {
+ /* Normalization of 16 bits shift */
+ range_Q16 = range_Q32;
+ /* Check for errors */
+ if( SKP_RSHIFT( base_Q32, 16 ) ) {
+ psRC->error = RANGE_CODER_NORMALIZATION_FAILED;
+ /* Set output to zero */
+ *data = 0;
+ return;
+ }
+ /* Update base */
+ base_Q32 = SKP_LSHIFT_uint( base_Q32, 8 );
+ /* Make sure not to read beyond buffer */
+ if( bufferIx < psRC->bufferLength ) {
+ /* Read one byte from buffer */
+ base_Q32 |= (SKP_uint32)buffer[ bufferIx++ ];
+ }
+ }
+ /* Update base */
+ base_Q32 = SKP_LSHIFT_uint( base_Q32, 8 );
+ /* Make sure not to read beyond buffer */
+ if( bufferIx < psRC->bufferLength ) {
+ /* Read one byte from buffer */
+ base_Q32 |= (SKP_uint32)buffer[ bufferIx++ ];
+ }
+ }
+
+ /* Check for zero interval length */
+ if( range_Q16 == 0 ) {
+ psRC->error = RANGE_CODER_ZERO_INTERVAL_WIDTH;
+ /* Set output to zero */
+ *data = 0;
+ return;
+ }
+
+ /* Copy structure data back */
+ psRC->base_Q32 = base_Q32;
+ psRC->range_Q16 = range_Q16;
+ psRC->bufferIx = bufferIx;
+}
+
+/* Range decoder for multiple symbols */
+void SKP_Silk_range_decoder_multi(
+ SKP_int data[], /* O uncompressed data [nSymbols] */
+ SKP_Silk_range_coder_state *psRC, /* I/O compressor data structure */
+ const SKP_uint16 * const prob[], /* I cumulative density functions */
+ const SKP_int probStartIx[], /* I initial (middle) entries of cdfs [nSymbols] */
+ const SKP_int nSymbols /* I number of data symbols */
+)
+{
+ SKP_int k;
+ for( k = 0; k < nSymbols; k++ ) {
+ SKP_Silk_range_decoder( &data[ k ], psRC, prob[ k ], probStartIx[ k ] );
+ }
+}
+
+/* Initialize range encoder */
+void SKP_Silk_range_enc_init(
+ SKP_Silk_range_coder_state *psRC /* O compressor data structure */
+)
+{
+ /* Initialize structure */
+ psRC->bufferLength = MAX_ARITHM_BYTES;
+ psRC->range_Q16 = 0x0000FFFF;
+ psRC->bufferIx = 0;
+ psRC->base_Q32 = 0;
+ psRC->error = 0;
+}
+
+/* Initialize range decoder */
+void SKP_Silk_range_dec_init(
+ SKP_Silk_range_coder_state *psRC, /* O compressor data structure */
+ const SKP_uint8 buffer[], /* I buffer for compressed data [bufferLength] */
+ const SKP_int32 bufferLength /* I buffer length (in bytes) */
+)
+{
+ /* check input */
+ if( bufferLength > MAX_ARITHM_BYTES ) {
+ psRC->error = RANGE_CODER_DEC_PAYLOAD_TOO_LONG;
+ return;
+ }
+ /* Initialize structure */
+ /* Copy to internal buffer */
+ SKP_memcpy( psRC->buffer, buffer, bufferLength * sizeof( SKP_uint8 ) );
+ psRC->bufferLength = bufferLength;
+ psRC->bufferIx = 0;
+ psRC->base_Q32 =
+ SKP_LSHIFT_uint( (SKP_uint32)buffer[ 0 ], 24 ) |
+ SKP_LSHIFT_uint( (SKP_uint32)buffer[ 1 ], 16 ) |
+ SKP_LSHIFT_uint( (SKP_uint32)buffer[ 2 ], 8 ) |
+ (SKP_uint32)buffer[ 3 ];
+ psRC->range_Q16 = 0x0000FFFF;
+ psRC->error = 0;
+}
+
+/* Determine length of bitstream */
+SKP_int SKP_Silk_range_coder_get_length( /* O returns number of BITS in stream */
+ const SKP_Silk_range_coder_state *psRC, /* I compressed data structure */
+ SKP_int *nBytes /* O number of BYTES in stream */
+)
+{
+ SKP_int nBits;
+
+ /* Number of additional bits (1..9) required to be stored to stream */
+ nBits = SKP_LSHIFT( psRC->bufferIx, 3 ) + SKP_Silk_CLZ32( psRC->range_Q16 - 1 ) - 14;
+
+ *nBytes = SKP_RSHIFT( nBits + 7, 3 );
+
+ /* Return number of bits in bitstream */
+ return nBits;
+}
+
+/* Write shortest uniquely decodable stream to buffer, and determine its length */
+void SKP_Silk_range_enc_wrap_up(
+ SKP_Silk_range_coder_state *psRC /* I/O compressed data structure */
+)
+{
+ SKP_int bufferIx_tmp, bits_to_store, bits_in_stream, nBytes, mask;
+ SKP_uint32 base_Q24;
+
+ /* Lower limit of interval, shifted 8 bits to the right */
+ base_Q24 = SKP_RSHIFT_uint( psRC->base_Q32, 8 );
+
+ bits_in_stream = SKP_Silk_range_coder_get_length( psRC, &nBytes );
+
+ /* Number of additional bits (1..9) required to be stored to stream */
+ bits_to_store = bits_in_stream - SKP_LSHIFT( psRC->bufferIx, 3 );
+ /* Round up to required resolution */
+ base_Q24 += SKP_RSHIFT_uint( 0x00800000, bits_to_store - 1 );
+ base_Q24 &= SKP_LSHIFT_ovflw( 0xFFFFFFFF, 24 - bits_to_store );
+
+ /* Check for carry */
+ if( base_Q24 & 0x01000000 ) {
+ /* Propagate carry in buffer */
+ bufferIx_tmp = psRC->bufferIx;
+ while( ( ++( psRC->buffer[ --bufferIx_tmp ] ) ) == 0 );
+ }
+
+ /* Store to stream, making sure not to write beyond buffer */
+ if( psRC->bufferIx < psRC->bufferLength ) {
+ psRC->buffer[ psRC->bufferIx++ ] = (SKP_uint8)SKP_RSHIFT_uint( base_Q24, 16 );
+ if( bits_to_store > 8 ) {
+ if( psRC->bufferIx < psRC->bufferLength ) {
+ psRC->buffer[ psRC->bufferIx++ ] = (SKP_uint8)SKP_RSHIFT_uint( base_Q24, 8 );
+ }
+ }
+ }
+
+ /* Fill up any remaining bits in the last byte with 1s */
+ if( bits_in_stream & 7 ) {
+ mask = SKP_RSHIFT( 0xFF, bits_in_stream & 7 );
+ if( nBytes - 1 < psRC->bufferLength ) {
+ psRC->buffer[ nBytes - 1 ] |= mask;
+ }
+ }
+}
+
+/* Check that any remaining bits in the last byte are set to 1 */
+void SKP_Silk_range_coder_check_after_decoding(
+ SKP_Silk_range_coder_state *psRC /* I/O compressed data structure */
+)
+{
+ SKP_int bits_in_stream, nBytes, mask;
+
+ bits_in_stream = SKP_Silk_range_coder_get_length( psRC, &nBytes );
+
+ /* Make sure not to read beyond buffer */
+ if( nBytes - 1 >= psRC->bufferLength ) {
+ psRC->error = RANGE_CODER_DECODER_CHECK_FAILED;
+ return;
+ }
+
+ /* Test any remaining bits in last byte */
+ if( bits_in_stream & 7 ) {
+ mask = SKP_RSHIFT( 0xFF, bits_in_stream & 7 );
+ if( ( psRC->buffer[ nBytes - 1 ] & mask ) != mask ) {
+ psRC->error = RANGE_CODER_DECODER_CHECK_FAILED;
+ return;
+ }
+ }
+}
--- /dev/null
+++ b/src/SKP_Silk_regularize_correlations_FIX.c
@@ -1,0 +1,43 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_main_FIX.h"
+
+/* Add noise to matrix diagonal */
+void SKP_Silk_regularize_correlations_FIX(
+ SKP_int32 *XX, /* I/O Correlation matrices */
+ SKP_int32 *xx, /* I/O Correlation values */
+ SKP_int32 noise, /* I Noise to add */
+ SKP_int D /* I Dimension of XX */
+)
+{
+ SKP_int i;
+ for( i = 0; i < D; i++ ) {
+ matrix_ptr( &XX[ 0 ], i, i, D ) = SKP_ADD32( matrix_ptr( &XX[ 0 ], i, i, D ), noise );
+ }
+ xx[ 0 ] += noise;
+}
--- /dev/null
+++ b/src/SKP_Silk_resample_1_2.c
@@ -1,0 +1,77 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+/* *
+ * SKP_Silk_resample_1_2 *
+ * *
+ * Downsample by a factor 2 *
+ * *
+ * Copyright 2006 (c), Skype Limited *
+ * Date: 060221 *
+ * */
+#include "SKP_Silk_SigProc_FIX.h"
+
+/* Coefficients for 2-fold resampling */
+static SKP_int16 A20_Resample_1_2[ 3 ] = { 1254, 10102, 22898 };
+static SKP_int16 A21_Resample_1_2[ 3 ] = { 4810, 16371, 29374 };
+
+
+/* Downsample by a factor 2 */
+void SKP_Silk_resample_1_2(
+ const SKP_int16 *in, /* I: 16 kHz signal [2*len] */
+ SKP_int32 *S, /* I/O: State vector [6] */
+ SKP_int16 *out, /* O: 8 kHz signal [len] */
+ SKP_int32 *scratch, /* I: Scratch memory [4*len] */
+ const SKP_int32 len /* I: Number of OUTPUT samples*/
+)
+{
+ SKP_int32 k, idx;
+
+ /* De-interleave allpass inputs, and convert Q15 -> Q25 */
+ for( k = 0; k < len; k++ ) {
+ idx = SKP_LSHIFT( k, 1 );
+ scratch[ k ] = SKP_LSHIFT( (SKP_int32)in[ idx ], 10 );
+ scratch[ k + len ] = SKP_LSHIFT( (SKP_int32)in[ idx + 1 ], 10 );
+ }
+
+ idx = SKP_LSHIFT( len, 1 );
+
+ /* Allpass filters */
+ SKP_Silk_allpass_int( scratch, S, A21_Resample_1_2[ 0 ], scratch + idx, len );
+ SKP_Silk_allpass_int( scratch + idx, S + 1, A21_Resample_1_2[ 1 ], scratch + idx + len, len );
+ SKP_Silk_allpass_int( scratch + idx + len, S + 2, A21_Resample_1_2[ 2 ], scratch, len );
+
+ SKP_Silk_allpass_int( scratch + len, S + 3, A20_Resample_1_2[ 0 ], scratch + idx, len );
+ SKP_Silk_allpass_int( scratch + idx, S + 4, A20_Resample_1_2[ 1 ], scratch + idx + len, len );
+ SKP_Silk_allpass_int( scratch + idx + len, S + 5, A20_Resample_1_2[ 2 ], scratch + len, len );
+
+ /* Add two allpass outputs */
+ for( k = 0; k < len; k++ ) {
+ out[ k ] = (SKP_int16)SKP_SAT16( SKP_RSHIFT_ROUND( scratch[ k ] + scratch[ k + len ], 11 ) );
+ }
+}
+
--- /dev/null
+++ b/src/SKP_Silk_resample_1_2_coarse.c
@@ -1,0 +1,74 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+/* *
+ * SKP_Silk_resample_1_2_coarse.c *
+ * *
+ * Downsample by a factor 2, coarser *
+ * *
+ * Copyright 2006 (c), Skype Limited *
+ * Date: 060221 *
+ * */
+#include "SKP_Silk_SigProc_FIX.h"
+
+/* downsample by a factor 2, coarser */
+void SKP_Silk_resample_1_2_coarse(
+ const SKP_int16 *in, /* I: 16 kHz signal [2*len] */
+ SKP_int32 *S, /* I/O: State vector [4] */
+ SKP_int16 *out, /* O: 8 kHz signal [len] */
+ SKP_int32 *scratch, /* I: Scratch memory [3*len] */
+ const SKP_int32 len /* I: Number of OUTPUT samples*/
+)
+{
+ SKP_int32 k, idx;
+
+ /* Coefficients for coarser 2-fold resampling */
+ const SKP_int16 A20c[ 2 ] = { 2119, 16663 };
+ const SKP_int16 A21c[ 2 ] = { 8050, 26861 };
+
+ /* De-interleave allpass inputs, and convert Q15 -> Q25 */
+ for( k = 0; k < len; k++ ) {
+ idx = SKP_LSHIFT( k, 1 );
+ scratch[ k ] = SKP_LSHIFT( (SKP_int32)in[ idx ], 10 );
+ scratch[ k + len ] = SKP_LSHIFT( (SKP_int32)in[ idx + 1 ], 10 );
+ }
+
+ idx = SKP_LSHIFT( len, 1 );
+ /* Allpass filters */
+ SKP_Silk_allpass_int( scratch, S, A21c[ 0 ], scratch + idx, len );
+ SKP_Silk_allpass_int( scratch + idx, S + 1, A21c[ 1 ], scratch, len );
+
+ SKP_Silk_allpass_int( scratch + len, S + 2, A20c[ 0 ], scratch + idx, len );
+ SKP_Silk_allpass_int( scratch + idx, S + 3, A20c[ 1 ], scratch + len, len );
+
+ /* Add two allpass outputs */
+ for( k = 0; k < len; k++ ) {
+ out[ k ] = (SKP_int16)SKP_SAT16( SKP_RSHIFT_ROUND( scratch[ k ] + scratch[ k + len ], 11 ) );
+ }
+}
+
+
--- /dev/null
+++ b/src/SKP_Silk_resample_1_2_coarsest.c
@@ -1,0 +1,71 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+/* *
+ * SKP_Silk_resample_1_2_coarsest.c *
+ * *
+ * Downsample by a factor 2, coarsest *
+ * *
+ * Copyright 2006 (c), Skype Limited *
+ * Date: 060221 *
+ * */
+#include "SKP_Silk_SigProc_FIX.h"
+
+
+/* Coefficients for coarsest 2-fold resampling */
+static SKP_int16 A20cst[ 1 ] = { 3786 };
+static SKP_int16 A21cst[ 1 ] = { 17908 };
+
+/* Downsample by a factor 2, coarsest */
+void SKP_Silk_resample_1_2_coarsest(
+ const SKP_int16 *in, /* I: 16 kHz signal [2*len] */
+ SKP_int32 *S, /* I/O: State vector [2] */
+ SKP_int16 *out, /* O: 8 kHz signal [len] */
+ SKP_int32 *scratch, /* I: Scratch memory [3*len] */
+ const SKP_int32 len /* I: Number of OUTPUT samples*/
+)
+{
+ SKP_int32 k, idx;
+
+ /* De-interleave allpass inputs, and convert Q15 -> Q25 */
+ for( k = 0; k < len; k++ ) {
+ idx = SKP_LSHIFT( k, 1 );
+ scratch[ k ] = SKP_LSHIFT( (SKP_int32)in[ idx ], 10 );
+ scratch[ k + len ] = SKP_LSHIFT( (SKP_int32)in[ idx + 1 ], 10 );
+ }
+
+ idx = SKP_LSHIFT( len, 1 );
+ /* Allpass filters */
+ SKP_Silk_allpass_int( scratch, S, A21cst[ 0 ], scratch + idx, len );
+ SKP_Silk_allpass_int( scratch + len, S + 1, A20cst[ 0 ], scratch, len );
+
+ /* Add two allpass outputs */
+ for( k = 0; k < len; k++ ) {
+ out[ k ] = (SKP_int16)SKP_SAT16( SKP_RSHIFT_ROUND( scratch[ k ] + scratch[ k + idx ], 11 ) );
+ }
+}
+
--- /dev/null
+++ b/src/SKP_Silk_resample_1_3.c
@@ -1,0 +1,101 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+/* *
+ * SKP_Silk_resample_1_3.c *
+ * *
+ * Downsamples by a factor 3 *
+ * *
+ * Copyright 2008 (c), Skype Limited *
+ * Date: 081113 *
+ * */
+#include "SKP_Silk_SigProc_FIX.h"
+
+#define OUT_SUBFR_LEN 80
+
+/* Downsamples by a factor 3 */
+void SKP_Silk_resample_1_3(
+ SKP_int16 *out, /* O: Fs_low signal [inLen/3] */
+ SKP_int32 *S, /* I/O: State vector [7] */
+ const SKP_int16 *in, /* I: Fs_high signal [inLen] */
+ const SKP_int32 inLen /* I: Input length, must be a multiple of 3 */
+)
+{
+ SKP_int k, outLen, LSubFrameIn, LSubFrameOut;
+ SKP_int32 out_tmp, limit = 102258000; // (102258000 + 1560) * 21 * 2^(-16) = 32767.5
+ SKP_int32 scratch0[ 3 * OUT_SUBFR_LEN ];
+ SKP_int32 scratch10[ OUT_SUBFR_LEN ], scratch11[ OUT_SUBFR_LEN ], scratch12[ OUT_SUBFR_LEN ];
+ /* coefficients for 3-fold resampling */
+ const SKP_int16 A30[ 2 ] = { 1773, 17818 };
+ const SKP_int16 A31[ 2 ] = { 4942, 25677 };
+ const SKP_int16 A32[ 2 ] = { 11786, 29304 };
+
+ /* Check that input is multiple of 3 */
+ SKP_assert( inLen % 3 == 0 );
+
+ outLen = SKP_DIV32_16( inLen, 3 );
+ while( outLen > 0 ) {
+ LSubFrameOut = SKP_min_int( OUT_SUBFR_LEN, outLen );
+ LSubFrameIn = SKP_SMULBB( 3, LSubFrameOut );
+
+ /* Low-pass filter, Q15 -> Q25 */
+ SKP_Silk_lowpass_short( in, S, scratch0, LSubFrameIn );
+
+ /* De-interleave three allpass inputs */
+ for( k = 0; k < LSubFrameOut; k++ ) {
+ scratch10[ k ] = scratch0[ 3 * k ];
+ scratch11[ k ] = scratch0[ 3 * k + 1 ];
+ scratch12[ k ] = scratch0[ 3 * k + 2 ];
+ }
+
+ /* Allpass filters */
+ SKP_Silk_allpass_int( scratch10, S + 1, A32[ 0 ], scratch0, LSubFrameOut );
+ SKP_Silk_allpass_int( scratch0, S + 2, A32[ 1 ], scratch10, LSubFrameOut );
+
+ SKP_Silk_allpass_int( scratch11, S + 3, A31[ 0 ], scratch0, LSubFrameOut );
+ SKP_Silk_allpass_int( scratch0, S + 4, A31[ 1 ], scratch11, LSubFrameOut );
+
+ SKP_Silk_allpass_int( scratch12, S + 5, A30[ 0 ], scratch0, LSubFrameOut );
+ SKP_Silk_allpass_int( scratch0, S + 6, A30[ 1 ], scratch12, LSubFrameOut );
+
+ /* Add three allpass outputs */
+ for( k = 0; k < LSubFrameOut; k++ ) {
+ out_tmp = scratch10[ k ] + scratch11[ k ] + scratch12[ k ];
+ if( out_tmp - limit > 0 ) {
+ out[ k ] = SKP_int16_MAX;
+ } else if( out_tmp + limit < 0 ) {
+ out[ k ] = SKP_int16_MIN;
+ } else {
+ out[ k ] = (SKP_int16) SKP_SMULWB( out_tmp + 1560, 21 );
+ }
+ }
+
+ in += LSubFrameIn;
+ out += LSubFrameOut;
+ outLen -= LSubFrameOut;
+ }
+}
--- /dev/null
+++ b/src/SKP_Silk_resample_2_1_coarse.c
@@ -1,0 +1,73 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+/* *
+ * SKP_Silk_resample_2_1_coarse.c *
+ * *
+ * Upsample by a factor 2, coarser *
+ * *
+ * Copyright 2006 (c), Skype Limited *
+ * Date: 060221 *
+ * */
+#include "SKP_Silk_SigProc_FIX.h"
+
+/* Upsample by a factor 2, coarser */
+void SKP_Silk_resample_2_1_coarse(
+ const SKP_int16 *in, /* I: 8 kHz signal [len] */
+ SKP_int32 *S, /* I/O: State vector [4] */
+ SKP_int16 *out, /* O: 16 kHz signal [2*len] */
+ SKP_int32 *scratch, /* I: Scratch memory [3*len] */
+ const SKP_int32 len /* I: Number of INPUT samples */
+)
+{
+ SKP_int32 k, idx;
+
+ /* Coefficients for coarser 2-fold resampling */
+ const SKP_int16 A20c[ 2 ] = { 2119, 16663 };
+ const SKP_int16 A21c[ 2 ] = { 8050, 26861 };
+
+ /* Convert Q15 -> Q25 */
+ for( k = 0; k < len; k++ ) {
+ scratch[ k ] = SKP_LSHIFT( (SKP_int32)in[ k ], 10 );
+ }
+
+ idx = SKP_LSHIFT( len, 1 );
+
+ /* Allpass filters */
+ SKP_Silk_allpass_int( scratch, S, A20c[ 0 ], scratch + idx, len );
+ SKP_Silk_allpass_int( scratch + idx, S + 1, A20c[ 1 ], scratch + len, len );
+
+ SKP_Silk_allpass_int( scratch, S + 2, A21c[ 0 ], scratch + idx, len );
+ SKP_Silk_allpass_int( scratch + idx, S + 3, A21c[ 1 ], scratch, len );
+
+ /* Interleave two allpass outputs */
+ for( k = 0; k < len; k++ ) {
+ idx = SKP_LSHIFT( k, 1 );
+ out[ idx ] = (SKP_int16)SKP_SAT16( SKP_RSHIFT_ROUND( scratch[ k + len ], 10 ) );
+ out[ idx + 1 ] = (SKP_int16)SKP_SAT16( SKP_RSHIFT_ROUND( scratch[ k ], 10 ) );
+ }
+}
--- /dev/null
+++ b/src/SKP_Silk_resample_2_3.c
@@ -1,0 +1,74 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+/* *
+ * File Name: SKP_Silk_resample_2_3.c *
+ * *
+ * Resamples by a factor 2/3 *
+ * *
+ * Copyright 2008 (c), Skype Limited *
+ * All rights reserved. *
+ * *
+ * Date: 081113 *
+ * */
+
+#include "SKP_Silk_SigProc_FIX.h"
+
+#define OUT_SUBFR_LEN 80
+
+/* Resamples by a factor 2/3 */
+void SKP_Silk_resample_2_3(
+ SKP_int16 *out, /* O: Fs_low signal [inLen * 2/3] */
+ SKP_int32 *S, /* I/O: State vector [7+4] */
+ const SKP_int16 *in, /* I: Fs_high signal [inLen] */
+ const SKP_int inLen /* I: Input length, must be a multiple of 3 */
+)
+{
+ SKP_int outLen, LSubFrameIn, LSubFrameOut;
+ SKP_int16 outH[ 3 * OUT_SUBFR_LEN ];
+ SKP_int32 scratch[ ( 9 * OUT_SUBFR_LEN ) / 2 ];
+
+ /* Check that input length is multiple of 3 */
+ SKP_assert( inLen % 3 == 0 );
+
+ outLen = SKP_DIV32_16( SKP_LSHIFT( inLen, 1 ), 3 );
+ while( outLen > 0 ) {
+ LSubFrameOut = SKP_min_int( OUT_SUBFR_LEN, outLen );
+ LSubFrameIn = SKP_SMULWB( 98304, LSubFrameOut ); /* 98304_Q16 = 3/2_Q0 */
+
+ /* Upsample by a factor 2 */
+ /* Scratch size needs to be: 3 * LSubFrameIn * sizeof( SKP_int32 ) */
+ SKP_Silk_resample_2_1_coarse( in, &S[ 0 ], outH, scratch, LSubFrameIn );
+
+ /* Downsample by a factor 3 */
+ SKP_Silk_resample_1_3( out, &S[ 4 ], outH, SKP_LSHIFT( LSubFrameIn, 1 ) );
+
+ in += LSubFrameIn;
+ out += LSubFrameOut;
+ outLen -= LSubFrameOut;
+ }
+}
--- /dev/null
+++ b/src/SKP_Silk_resample_2_3_coarse.c
@@ -1,0 +1,112 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+/* *
+ * File Name: SKP_Silk_resample_2_3_coarse.c *
+ * *
+ * Description: Linear phase FIR polyphase implementation of resampling *
+ * *
+ * Copyright 2009 (c), Skype Limited *
+ * All rights reserved. *
+ * *
+ * Date: 090423 *
+ * */
+
+#include "SKP_Silk_SigProc_FIX.h"
+#include "SKP_Silk_resample_rom.h"
+
+/* Resamples input data with a factor 2/3 */
+void SKP_Silk_resample_2_3_coarse(
+ SKP_int16 *out, /* O: Output signal */
+ SKP_int16 *S, /* I/O: Resampler state [ SigProc_Resample_2_3_coarse_NUM_FIR_COEFS - 1 ] */
+ const SKP_int16 *in, /* I: Input signal */
+ const SKP_int frameLenIn, /* I: Number of input samples */
+ SKP_int16 *scratch /* I: Scratch memory [ frameLenIn + SigProc_Resample_2_3_coarse_NUM_FIR_COEFS - 1 ] */
+)
+{
+ SKP_int32 n, ind, interpol_ind, tmp, index_Q16;
+ SKP_int16 *in_ptr;
+ SKP_int frameLenOut;
+ const SKP_int16 *interpol_ptr;
+
+ /* Copy buffered samples to start of scratch */
+ SKP_memcpy( scratch, S, ( SigProc_Resample_2_3_coarse_NUM_FIR_COEFS - 1 ) * sizeof( SKP_int16 ) );
+
+ /* Then append by the input signal */
+ SKP_memcpy( &scratch[ SigProc_Resample_2_3_coarse_NUM_FIR_COEFS - 1 ], in, frameLenIn * sizeof( SKP_int16 ) );
+
+ frameLenOut = SKP_DIV32_16( SKP_MUL( 2, frameLenIn ), 3 );
+ index_Q16 = 0;
+
+ SKP_assert( frameLenIn == ( ( frameLenOut * 3 ) / 2 ) );
+
+ /* Interpolate */
+ for( n = frameLenOut; n > 0; n-- ) {
+
+ /* Integer part */
+ ind = SKP_RSHIFT( index_Q16, 16 );
+
+ /* Pointer to buffered input */
+ in_ptr = scratch + ind;
+
+ /* Fractional part */
+ interpol_ind = ( SKP_SMULWB( index_Q16, SigProc_Resample_2_3_coarse_NUM_INTERPOLATORS ) &
+ ( SigProc_Resample_2_3_coarse_NUM_INTERPOLATORS - 1 ) );
+
+ /* Pointer to FIR taps */
+ interpol_ptr = SigProc_Resample_2_3_coarse_INTERPOL[ interpol_ind ];
+
+ /* Interpolate */
+ /* Hardcoded for 32 FIR taps */
+ SKP_assert( SigProc_Resample_2_3_coarse_NUM_FIR_COEFS == 32 );
+ tmp = (SKP_int32)interpol_ptr[ 0 ] * in_ptr[ 0 ] + (SKP_int32)interpol_ptr[ 1 ] * in_ptr[ 1 ] +
+ (SKP_int32)interpol_ptr[ 2 ] * in_ptr[ 2 ] + (SKP_int32)interpol_ptr[ 3 ] * in_ptr[ 3 ] +
+ (SKP_int32)interpol_ptr[ 4 ] * in_ptr[ 4 ] + (SKP_int32)interpol_ptr[ 5 ] * in_ptr[ 5 ] +
+ (SKP_int32)interpol_ptr[ 6 ] * in_ptr[ 6 ] + (SKP_int32)interpol_ptr[ 7 ] * in_ptr[ 7 ] +
+ (SKP_int32)interpol_ptr[ 8 ] * in_ptr[ 8 ] + (SKP_int32)interpol_ptr[ 9 ] * in_ptr[ 9 ] +
+ (SKP_int32)interpol_ptr[ 10 ] * in_ptr[ 10 ] + (SKP_int32)interpol_ptr[ 11 ] * in_ptr[ 11 ] +
+ (SKP_int32)interpol_ptr[ 12 ] * in_ptr[ 12 ] + (SKP_int32)interpol_ptr[ 13 ] * in_ptr[ 13 ] +
+ (SKP_int32)interpol_ptr[ 14 ] * in_ptr[ 14 ] + (SKP_int32)interpol_ptr[ 15 ] * in_ptr[ 15 ] +
+ (SKP_int32)interpol_ptr[ 16 ] * in_ptr[ 16 ] + (SKP_int32)interpol_ptr[ 17 ] * in_ptr[ 17 ] +
+ (SKP_int32)interpol_ptr[ 18 ] * in_ptr[ 18 ] + (SKP_int32)interpol_ptr[ 19 ] * in_ptr[ 19 ] +
+ (SKP_int32)interpol_ptr[ 20 ] * in_ptr[ 20 ] + (SKP_int32)interpol_ptr[ 21 ] * in_ptr[ 21 ] +
+ (SKP_int32)interpol_ptr[ 22 ] * in_ptr[ 22 ] + (SKP_int32)interpol_ptr[ 23 ] * in_ptr[ 23 ] +
+ (SKP_int32)interpol_ptr[ 24 ] * in_ptr[ 24 ] + (SKP_int32)interpol_ptr[ 25 ] * in_ptr[ 25 ] +
+ (SKP_int32)interpol_ptr[ 26 ] * in_ptr[ 26 ] + (SKP_int32)interpol_ptr[ 27 ] * in_ptr[ 27 ] +
+ (SKP_int32)interpol_ptr[ 28 ] * in_ptr[ 28 ] + (SKP_int32)interpol_ptr[ 29 ] * in_ptr[ 29 ];
+
+ /* Round, saturate and store to output array */
+ *out++ = (SKP_int16)SKP_SAT16( SKP_RSHIFT_ROUND( tmp, 15 ) );
+
+ /* Update index */
+ index_Q16 += ( ( 1 << 16 ) + ( 1 << 15 ) ); // (3/2)_Q0;
+ }
+
+ /* Move last part of input signal to the sample buffer to prepare for the next call */
+ SKP_memcpy( S, &in[ frameLenIn - ( SigProc_Resample_2_3_coarse_NUM_FIR_COEFS - 1 ) ],
+ ( SigProc_Resample_2_3_coarse_NUM_FIR_COEFS - 1 ) * sizeof( SKP_int16 ) );
+}
--- /dev/null
+++ b/src/SKP_Silk_resample_2_3_coarsest.c
@@ -1,0 +1,131 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+/* *
+ * File Name: SKP_Silk_resample_2_3_coarsest.c *
+ * *
+ * Description: Linear phase FIR polyphase implementation of resampling *
+ * *
+ * Copyright 2009 (c), Skype Limited *
+ * All rights reserved. *
+ * *
+ * Date: 090423 *
+ * */
+
+#include "SKP_Silk_SigProc_FIX.h"
+#include "SKP_Silk_resample_rom.h"
+
+/* Resamples input data with a factor 2/3 */
+void SKP_Silk_resample_2_3_coarsest(
+ SKP_int16 *out, /* O: Output signal */
+ SKP_int16 *S, /* I/O: Resampler state [ SigProc_Resample_2_3_coarsest_NUM_FIR_COEFS - 1 ] */
+ const SKP_int16 *in, /* I: Input signal */
+ const SKP_int frameLenIn, /* I: Number of input samples */
+ SKP_int16 *scratch /* I: Scratch memory [ frameLenIn + SigProc_Resample_2_3_coarsest_NUM_FIR_COEFS - 1 ] */
+)
+{
+ SKP_int32 n, ind, interpol_ind, tmp, index_Q16;
+ SKP_int16 *in_ptr;
+ SKP_int frameLenOut;
+ const SKP_int16 *interpol_ptr;
+#if ( EMBEDDED_ARM>=6 ) && defined (__GNUC__)
+ SKP_int32 in_val, interpol_val;
+#endif
+
+ /* Copy buffered samples to start of scratch */
+ SKP_memcpy( scratch, S, ( SigProc_Resample_2_3_coarsest_NUM_FIR_COEFS - 1 ) * sizeof( SKP_int16 ) );
+
+ /* Then append by the input signal */
+ SKP_memcpy( &scratch[ SigProc_Resample_2_3_coarsest_NUM_FIR_COEFS - 1 ], in, frameLenIn * sizeof( SKP_int16 ) );
+
+ frameLenOut = SKP_SMULWB( SKP_LSHIFT( (SKP_int32)frameLenIn, 1 ), 21846 ); // 21846_Q15 = (2/3)_Q0 rounded _up_
+ index_Q16 = 0;
+
+ SKP_assert( frameLenIn == ( ( frameLenOut * 3 ) / 2 ) );
+
+ /* Interpolate */
+ for( n = frameLenOut; n > 0; n-- ) {
+
+ /* Integer part */
+ ind = SKP_RSHIFT( index_Q16, 16 );
+
+ /* Pointer to buffered input */
+ in_ptr = scratch + ind;
+
+ /* Fractional part */
+ interpol_ind = ( SKP_SMULWB( index_Q16, SigProc_Resample_2_3_coarsest_NUM_INTERPOLATORS ) &
+ ( SigProc_Resample_2_3_coarsest_NUM_INTERPOLATORS - 1 ) );
+
+ /* Pointer to FIR taps */
+ interpol_ptr = SigProc_Resample_2_3_coarsest_INTERPOL[ interpol_ind ];
+
+ /* Interpolate: Hardcoded for 10 FIR taps */
+#if ( EMBEDDED_ARM>=6 ) && defined (__GNUC__) /*It doesn't improve efficiency on iphone.*/
+ /*tmp = SKP_SMUAD( *((SKP_int32 *)interpol_ptr)++, *((SKP_int32 *)in_ptr)++);
+ tmp = SKP_SMLAD( tmp, *((SKP_int32 *)interpol_ptr)++, *((SKP_int32 *)in_ptr)++);
+ tmp = SKP_SMLAD( tmp, *((SKP_int32 *)interpol_ptr), *((SKP_int32 *)in_ptr) );*/
+ __asm__ __volatile__ ( "ldr %1, [%3], #4 \n\t"
+ "ldr %2, [%4], #4 \n\t"
+ "smuad %0, %1, %2 \n\t"
+ "ldr %1, [%3], #4 \n\t"
+ "ldr %2, [%4], #4 \n\t"
+ "smlad %0, %1, %2, %0\n\t"
+ "ldr %1, [%3], #4 \n\t"
+ "ldr %2, [%4], #4 \n\t"
+ "smlad %0, %1, %2, %0\n\t"
+ "ldr %1, [%3], #4 \n\t"
+ "ldr %2, [%4], #4 \n\t"
+ "smlad %0, %1, %2, %0\n\t"
+ "ldr %1, [%3] \n\t"
+ "ldr %2, [%4] \n\t"
+ "smlad %0, %1, %2, %0\n\t"
+ : "=r" (tmp), "=r" (interpol_val), "=r" (in_val), "=r" (interpol_ptr), "=r" (in_ptr)
+ : "3" (interpol_ptr), "4" (in_ptr));
+#else
+ SKP_assert( SigProc_Resample_2_3_coarsest_NUM_FIR_COEFS == 10 );
+ tmp = SKP_SMULBB( interpol_ptr[ 0 ], in_ptr[ 0 ] );
+ tmp = SKP_SMLABB( tmp, interpol_ptr[ 1 ], in_ptr[ 1 ] );
+ tmp = SKP_SMLABB( tmp, interpol_ptr[ 2 ], in_ptr[ 2 ] );
+ tmp = SKP_SMLABB( tmp, interpol_ptr[ 3 ], in_ptr[ 3 ] );
+ tmp = SKP_SMLABB( tmp, interpol_ptr[ 4 ], in_ptr[ 4 ] );
+ tmp = SKP_SMLABB( tmp, interpol_ptr[ 5 ], in_ptr[ 5 ] );
+ tmp = SKP_SMLABB( tmp, interpol_ptr[ 6 ], in_ptr[ 6 ] );
+ tmp = SKP_SMLABB( tmp, interpol_ptr[ 7 ], in_ptr[ 7 ] );
+ tmp = SKP_SMLABB( tmp, interpol_ptr[ 8 ], in_ptr[ 8 ] );
+ tmp = SKP_SMLABB( tmp, interpol_ptr[ 9 ], in_ptr[ 9 ] );
+#endif
+ /* Round, saturate and store to output array */
+ *out++ = (SKP_int16)SKP_SAT16( SKP_RSHIFT_ROUND( tmp, 15 ) );
+
+ /* Update index */
+ index_Q16 += ( ( 1 << 16 ) + ( 1 << 15 ) ); // (3/2)_Q0;
+ }
+
+ /* Move last part of input signal to the sample buffer to prepare for the next call */
+ SKP_memcpy( S, &in[ frameLenIn - ( SigProc_Resample_2_3_coarsest_NUM_FIR_COEFS - 1 ) ],
+ ( SigProc_Resample_2_3_coarsest_NUM_FIR_COEFS - 1 ) * sizeof( SKP_int16 ) );
+}
--- /dev/null
+++ b/src/SKP_Silk_resample_2_3_rom.c
@@ -1,0 +1,50 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+/* *
+ * File Name: SKP_Silk_resample_2_3_rom.c *
+ * *
+ * Description: Filter coefficients for FIR polyphase resampling *
+ * *
+ * Copyright 2009 (c), Skype Limited *
+ * All rights reserved. *
+ * *
+ * Date: 090424 *
+ * */
+
+#include "SKP_Silk_resample_rom.h"
+
+const SKP_int16 SigProc_Resample_2_3_coarse_INTERPOL[ SigProc_Resample_2_3_coarse_NUM_INTERPOLATORS ][ SigProc_Resample_2_3_coarse_NUM_FIR_COEFS ] = {
+ { 0, -74, 109, 0, -234, 329, 0, -610, 813, 0, -1437, 1954, 0, -4358, 8953, 21845, 8953, -4358, 0, 1954, -1437, 0, 813, -610, 0, 329, -234, 0, 109, -74, 0, 45 },
+ { 48, -62, 0, 133, -195, 0, 386, -526, 0, 936, -1243, 0, 2311, -3417, 0, 18026, 18026, 0, -3417, 2311, 0, -1243, 936, 0, -526, 386, 0, -195, 133, 0, -62, 48 },
+};
+
+const SKP_int16 SigProc_Resample_2_3_coarsest_INTERPOL[ SigProc_Resample_2_3_coarsest_NUM_INTERPOLATORS ][ SigProc_Resample_2_3_coarsest_NUM_FIR_COEFS ] = {
+ { 379, 0, -3081, 8239, 21845, 8239, -3081, 0, 379, -145 },
+ { 0, 696, -1951, 0, 17659, 17659, 0, -1951, 696, 0 },
+};
+
--- /dev/null
+++ b/src/SKP_Silk_resample_3_1.c
@@ -1,0 +1,100 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+/* *
+ * SKP_Silk_resample_3_1.c *
+ * *
+ * Upsamples by a factor 3 *
+ * *
+ * Copyright 2008 (c), Skype Limited *
+ * Date: 081113 *
+ * */
+#include "SKP_Silk_SigProc_FIX.h"
+
+#define IN_SUBFR_LEN_RESAMPLE_3_1 40
+
+/* Resamples by a factor 3/1 */
+void SKP_Silk_resample_3_1(
+ SKP_int16 *out, /* O: Fs_high signal [inLen*3] */
+ SKP_int32 *S, /* I/O: State vector [7] */
+ const SKP_int16 *in, /* I: Fs_low signal [inLen] */
+ const SKP_int32 inLen /* I: Input length */
+)
+{
+ SKP_int k, LSubFrameIn, LSubFrameOut;
+ SKP_int32 out_tmp, idx, inLenTmp = inLen;
+ SKP_int32 scratch00[ IN_SUBFR_LEN_RESAMPLE_3_1 ];
+ SKP_int32 scratch0[ 3 * IN_SUBFR_LEN_RESAMPLE_3_1 ];
+ SKP_int32 scratch1[ 3 * IN_SUBFR_LEN_RESAMPLE_3_1 ];
+
+ /* Coefficients for 3-fold resampling */
+ const SKP_int16 A30[ 2 ] = { 1773, 17818 };
+ const SKP_int16 A31[ 2 ] = { 4942, 25677 };
+ const SKP_int16 A32[ 2 ] = { 11786, 29304 };
+
+ while( inLenTmp > 0 ) {
+ LSubFrameIn = SKP_min_int( IN_SUBFR_LEN_RESAMPLE_3_1, inLenTmp );
+ LSubFrameOut = SKP_SMULBB( 3, LSubFrameIn );
+
+ /* Convert Q15 -> Q25 */
+ for( k = 0; k < LSubFrameIn; k++ ) {
+ scratch00[k] = SKP_LSHIFT( (SKP_int32)in[ k ], 10 );
+ }
+
+ /* Allpass filtering */
+ /* Scratch size: 2 * 3* LSubFrame * sizeof(SKP_int32) */
+ SKP_Silk_allpass_int( scratch00, S + 1, A30[ 0 ], scratch1, LSubFrameIn );
+ SKP_Silk_allpass_int( scratch1, S + 2, A30[ 1 ], scratch0, LSubFrameIn );
+
+ SKP_Silk_allpass_int( scratch00, S + 3, A31[ 0 ], scratch1, LSubFrameIn );
+ SKP_Silk_allpass_int( scratch1, S + 4, A31[ 1 ], scratch0 + IN_SUBFR_LEN_RESAMPLE_3_1, LSubFrameIn );
+
+ SKP_Silk_allpass_int( scratch00, S + 5, A32[ 0 ], scratch1, LSubFrameIn );
+ SKP_Silk_allpass_int( scratch1, S + 6, A32[ 1 ], scratch0 + 2 * IN_SUBFR_LEN_RESAMPLE_3_1, LSubFrameIn );
+
+ /* Interleave three allpass outputs */
+ for( k = 0; k < LSubFrameIn; k++ ) {
+ idx = SKP_SMULBB( 3, k );
+ scratch1[ idx ] = scratch0[ k ];
+ scratch1[ idx + 1 ] = scratch0[ k + IN_SUBFR_LEN_RESAMPLE_3_1 ];
+ scratch1[ idx + 2 ] = scratch0[ k + 2 * IN_SUBFR_LEN_RESAMPLE_3_1 ];
+ }
+
+ /* Low-pass filtering */
+ SKP_Silk_lowpass_int( scratch1, S, scratch0, LSubFrameOut );
+
+ /* Saturate and convert to SKP_int16 */
+ for( k = 0; k < LSubFrameOut; k++ ) {
+ out_tmp = scratch0[ k ];
+ out[ k ] = (SKP_int16) SKP_SAT16( SKP_RSHIFT_ROUND( out_tmp, 10 ) );
+ }
+
+ in += LSubFrameIn;
+ inLenTmp -= LSubFrameIn;
+ out += LSubFrameOut;
+ }
+}
--- /dev/null
+++ b/src/SKP_Silk_resample_3_2.c
@@ -1,0 +1,73 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+/* *
+ * File Name: SKP_Silk_resample_3_2.c *
+ * *
+ * Resamples by a factor 3/2 *
+ * *
+ * Copyright 2008 (c), Skype Limited *
+ * All rights reserved. *
+ * *
+ * Date: 081113 *
+ * */
+
+#include "SKP_Silk_SigProc_FIX.h"
+
+#define IN_SUBFR_LEN_RESAMPLE_3_2 80
+
+/* Resamples by a factor 3/2 */
+void SKP_Silk_resample_3_2(
+ SKP_int16 *out, /* O: Fs_high signal [inLen*3/2] */
+ SKP_int32 *S, /* I/O: State vector [7+4] */
+ const SKP_int16 *in, /* I: Fs_low signal [inLen] */
+ SKP_int inLen /* I: Input length, must be a multiple of 2 */
+)
+{
+ SKP_int LSubFrameIn, LSubFrameOut;
+ SKP_int16 outH[ 3 * IN_SUBFR_LEN_RESAMPLE_3_2 ];
+ SKP_int32 scratch[ ( 9 * IN_SUBFR_LEN_RESAMPLE_3_2 ) / 2 ];
+
+ /* Check that input is multiple of 2 */
+ SKP_assert( inLen % 2 == 0 );
+
+ while( inLen > 0 ) {
+ LSubFrameIn = SKP_min_int( IN_SUBFR_LEN_RESAMPLE_3_2, inLen );
+ LSubFrameOut = SKP_SMULWB( 98304, LSubFrameIn );
+
+ /* Upsample by a factor 3 */
+ SKP_Silk_resample_3_1( outH, &S[ 0 ], in, LSubFrameIn );
+
+ /* Downsample by a factor 2 */
+ /* Scratch size needs to be: 3 * LSubFrameOut * sizeof( SKP_int32 ) */
+ SKP_Silk_resample_1_2_coarse( outH, &S[ 7 ], out, scratch, LSubFrameOut );
+
+ in += LSubFrameIn;
+ out += LSubFrameOut;
+ inLen -= LSubFrameIn;
+ }
+}
--- /dev/null
+++ b/src/SKP_Silk_resample_3_2_rom.c
@@ -1,0 +1,46 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+/* *
+ * File Name: SKP_Silk_resample_3_2_rom.c *
+ * *
+ * Description: Filter coefficients for FIR polyphase resampling *
+ * *
+ * Copyright 2009 (c), Skype Limited *
+ * All rights reserved. *
+ * *
+ * Date: 090424 *
+ * */
+
+#include "SKP_Silk_resample_rom.h"
+
+const SKP_int16 SigProc_Resample_3_2_coarse_INTERPOL[ SigProc_Resample_3_2_coarse_NUM_INTERPOLATORS ][ SigProc_Resample_3_2_coarse_NUM_FIR_COEFS ] = {
+ { 0, 0, 0, 32768, 0, 0, 0, 0 },
+ { -384, 1630, -5217, 26674, 12714, -3572, 1050, -236 },
+ { -236, 1050, -3572, 12714, 26674, -5217, 1630, -384 },
+};
+
--- /dev/null
+++ b/src/SKP_Silk_resample_3_4.c
@@ -1,0 +1,79 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+/* *
+ * File Name: SKP_Silk_resample_3_4.c *
+ * *
+ * Resamples by a factor 3/4 *
+ * *
+ * Copyright 2009 (c), Skype Limited *
+ * All rights reserved. *
+ * *
+ * Date: 090408 *
+ * */
+
+#include "SKP_Silk_SigProc_FIX.h"
+
+#define IN_SUBFR_LEN_RESAMPLE_3_4 80
+
+/* Resamples by a factor 3/4 */
+void SKP_Silk_resample_3_4(
+ SKP_int16 *out, /* O: Fs_high signal [inLen*3/4] */
+ SKP_int32 *S, /* I/O: State vector [7+2+6] */
+ const SKP_int16 *in, /* I: Fs_low signal [inLen] */
+ SKP_int inLen /* I: Input length, must be a multiple of 4 */
+)
+{
+ SKP_int LSubFrameIn, LSubFrameOut;
+ SKP_int16 outH[ 3 * IN_SUBFR_LEN_RESAMPLE_3_4 ];
+ SKP_int16 outL[ ( 3 * IN_SUBFR_LEN_RESAMPLE_3_4 ) / 2 ];
+ SKP_int32 scratch[ ( 9 * IN_SUBFR_LEN_RESAMPLE_3_4 ) / 2 ];
+
+ /* Check that input is multiple of 4 */
+ SKP_assert( inLen % 4 == 0 );
+
+ while( inLen > 0 ) {
+ LSubFrameIn = SKP_min_int( IN_SUBFR_LEN_RESAMPLE_3_4, inLen );
+ LSubFrameOut = SKP_SMULWB( 49152, LSubFrameIn );
+
+ /* Upsample by a factor 3 */
+ SKP_Silk_resample_3_1( outH, &S[ 0 ], in, LSubFrameIn );
+
+ /* Downsample by a factor 2 twice */
+ /* Scratch size needs to be: 3 * 2 * LSubFrameOut * sizeof( SKP_int32 ) */
+ /* I: state vector [2], scratch memory [3*len] */
+ SKP_Silk_resample_1_2_coarsest( outH, &S[ 7 ], outL, scratch, SKP_LSHIFT( LSubFrameOut, 1 ) );
+
+ /* Scratch size needs to be: 3 * LSubFrameOut * sizeof( SKP_int32 ) */
+ /* I: state vector [6], scratch memory [3*len] */
+ SKP_Silk_resample_1_2_coarse( outL, &S[ 9 ], out, scratch, LSubFrameOut );
+
+ in += LSubFrameIn;
+ out += LSubFrameOut;
+ inLen -= LSubFrameIn;
+ }
+}
--- /dev/null
+++ b/src/SKP_Silk_resample_4_3.c
@@ -1,0 +1,77 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+/* *
+ * File Name: SKP_Silk_resample_4_3.c *
+ * *
+ * Resamples by a factor 4/3 *
+ * *
+ * Copyright 2009 (c), Skype Limited *
+ * All rights reserved. *
+ * *
+ * Date: 090407 *
+ * */
+
+#include "SKP_Silk_SigProc_FIX.h"
+
+#define OUT_SUBFR_LEN 80
+
+/* Resamples by a factor 4/3 */
+void SKP_Silk_resample_4_3(
+ SKP_int16 *out, /* O: Fs_low signal [inLen * 4/3] */
+ SKP_int32 *S, /* I/O: State vector [7+4+4] */
+ const SKP_int16 *in, /* I: Fs_high signal [inLen] */
+ const SKP_int inLen /* I: input length, must be a multiple of 3 */
+)
+{
+ SKP_int outLen, LSubFrameIn, LSubFrameOut;
+ SKP_int16 outH[ 3 * OUT_SUBFR_LEN ];
+ SKP_int16 outHH[ 6 * OUT_SUBFR_LEN ];
+ SKP_int32 scratch[ 9 * OUT_SUBFR_LEN / 2 ];
+
+ /* Check that input is multiple of 3 */
+ SKP_assert( inLen % 3 == 0 );
+
+ outLen = SKP_DIV32_16( SKP_LSHIFT( inLen, 2 ), 3 );
+ while( outLen > 0 ) {
+ LSubFrameOut = SKP_min_int( OUT_SUBFR_LEN, outLen );
+ LSubFrameIn = SKP_SMULWB( 49152, LSubFrameOut );
+
+ /* Upsample two times by a factor 2 */
+ /* Scratch size needs to be: 3 * LSubFrameIn * sizeof( SKP_int32 ) */
+ SKP_Silk_resample_2_1_coarse( in, &S[ 0 ], outH, scratch, LSubFrameIn );
+ /* Scratch size needs to be: 6 * LSubFrameIn * sizeof( SKP_int32 ) */
+ SKP_Silk_resample_2_1_coarse( outH, &S[ 4 ], outHH, scratch, SKP_LSHIFT( LSubFrameIn, 1 ) );
+
+ /* Downsample by a factor 3 */
+ SKP_Silk_resample_1_3( out, &S[ 8 ], outHH, SKP_LSHIFT( LSubFrameIn, 2 ) );
+
+ in += LSubFrameIn;
+ out += LSubFrameOut;
+ outLen -= LSubFrameOut;
+ }
+}
--- /dev/null
+++ b/src/SKP_Silk_resample_rom.h
@@ -1,0 +1,107 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+/* *
+ * File Name: SKP_Silk_resample_rom.h *
+ * *
+ * Description: Header file for FIR resampling of *
+ * 32 and 44 kHz input *
+ * *
+ * Copyright 2007 (c), Skype Limited *
+ * All rights reserved. *
+ * *
+ * Date: 070807 *
+ * */
+
+#ifndef _SKP_SILK_FIX_RESAMPLE_ROM_H_
+#define _SKP_SILK_FIX_RESAMPLE_ROM_H_
+
+#include "SKP_Silk_typedef.h"
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#define SigProc_Resample_bw_1_4_NUM_INTERPOLATORS_LOG2 7
+#define SigProc_Resample_bw_1_4_NUM_INTERPOLATORS (1 << SigProc_Resample_bw_1_4_NUM_INTERPOLATORS_LOG2)
+#define SigProc_Resample_bw_1_4_NUM_FIR_COEFS 6
+
+extern const SKP_int16 SigProc_Resample_bw_1_4_INTERPOL[SigProc_Resample_bw_1_4_NUM_INTERPOLATORS][SigProc_Resample_bw_1_4_NUM_FIR_COEFS];
+
+
+#define SigProc_Resample_bw_80_441_NUM_INTERPOLATORS_LOG2 6
+#define SigProc_Resample_bw_80_441_NUM_INTERPOLATORS (1 << SigProc_Resample_bw_80_441_NUM_INTERPOLATORS_LOG2)
+#define SigProc_Resample_bw_80_441_NUM_FIR_COEFS 4
+
+extern const SKP_int16 SigProc_Resample_bw_80_441_INTERPOL[SigProc_Resample_bw_80_441_NUM_INTERPOLATORS][SigProc_Resample_bw_80_441_NUM_FIR_COEFS];
+
+#define SigProc_Resample_2_3_coarse_NUM_INTERPOLATORS 2
+#define SigProc_Resample_2_3_coarse_NUM_FIR_COEFS 32
+
+extern const SKP_int16 SigProc_Resample_2_3_coarse_INTERPOL[SigProc_Resample_2_3_coarse_NUM_INTERPOLATORS][SigProc_Resample_2_3_coarse_NUM_FIR_COEFS];
+
+#define SigProc_Resample_2_3_coarsest_NUM_INTERPOLATORS 2
+#define SigProc_Resample_2_3_coarsest_NUM_FIR_COEFS 10
+
+extern const SKP_int16 SigProc_Resample_2_3_coarsest_INTERPOL[SigProc_Resample_2_3_coarsest_NUM_INTERPOLATORS][SigProc_Resample_2_3_coarsest_NUM_FIR_COEFS];
+
+#define SigProc_Resample_3_2_coarse_NUM_INTERPOLATORS 3
+#define SigProc_Resample_3_2_coarse_NUM_FIR_COEFS 8
+
+extern const SKP_int16 SigProc_Resample_3_2_coarse_INTERPOL[SigProc_Resample_3_2_coarse_NUM_INTERPOLATORS][SigProc_Resample_3_2_coarse_NUM_FIR_COEFS];
+
+#define SigProc_Resample_147_40_NUM_INTERPOLATORS 147
+#define SigProc_Resample_147_40_NUM_FIR_COEFS 20
+
+extern const SKP_int16 SigProc_Resample_147_40_INTERPOL[SigProc_Resample_147_40_NUM_INTERPOLATORS][SigProc_Resample_147_40_NUM_FIR_COEFS];
+
+#define SigProc_Resample_147_40_alt_NUM_INTERPOLATORS 147
+#define SigProc_Resample_147_40_alt_NUM_FIR_COEFS 10
+
+extern const SKP_int16 SigProc_Resample_147_40_alt_INTERPOL[SigProc_Resample_147_40_alt_NUM_INTERPOLATORS][SigProc_Resample_147_40_alt_NUM_FIR_COEFS];
+
+#define SigProc_Resample_147_40_coarse_NUM_INTERPOLATORS 147
+#define SigProc_Resample_147_40_coarse_NUM_FIR_COEFS 16
+
+extern const SKP_int16 SigProc_Resample_147_40_coarse_INTERPOL[SigProc_Resample_147_40_coarse_NUM_INTERPOLATORS][SigProc_Resample_147_40_coarse_NUM_FIR_COEFS];
+
+#define SigProc_Resample_40_147_NUM_INTERPOLATORS 40
+#define SigProc_Resample_40_147_NUM_FIR_COEFS 60
+
+extern const SKP_int16 SigProc_Resample_40_147_INTERPOL[SigProc_Resample_40_147_NUM_INTERPOLATORS][SigProc_Resample_40_147_NUM_FIR_COEFS];
+
+#define SigProc_Resample_40_147_coarse_NUM_INTERPOLATORS 40
+#define SigProc_Resample_40_147_coarse_NUM_FIR_COEFS 30
+
+extern const SKP_int16 SigProc_Resample_40_147_coarse_INTERPOL[SigProc_Resample_40_147_coarse_NUM_INTERPOLATORS][SigProc_Resample_40_147_coarse_NUM_FIR_COEFS];
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // _SKP_SILK_FIX_RESAMPLE_ROM_H_
--- /dev/null
+++ b/src/SKP_Silk_residual_energy16_FIX.c
@@ -1,0 +1,99 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_main_FIX.h"
+
+/* Residual energy: nrg = wxx - 2 * wXx * c + c' * wXX * c */
+SKP_int32 SKP_Silk_residual_energy16_covar_FIX(
+ const SKP_int16 *c, /* I Prediction vector */
+ const SKP_int32 *wXX, /* I Correlation matrix */
+ const SKP_int32 *wXx, /* I Correlation vector */
+ SKP_int32 wxx, /* I Signal energy */
+ SKP_int D, /* I Dimension */
+ SKP_int cQ /* I Q value for c vector 0 - 15 */
+)
+{
+ SKP_int i, j, lshifts, Qxtra;
+ SKP_int32 c_max, w_max, tmp, tmp2, nrg;
+ SKP_int cn[ MAX_MATRIX_SIZE ];
+ const SKP_int32 *pRow;
+
+ /* Safety checks */
+ SKP_assert( D >= 0 );
+ SKP_assert( D <= 16 );
+ SKP_assert( cQ > 0 );
+ SKP_assert( cQ < 16 );
+
+ lshifts = 16 - cQ;
+ Qxtra = lshifts;
+
+ c_max = 0;
+ for( i = 0; i < D; i++ ) {
+ c_max = SKP_max_32( c_max, SKP_abs( ( SKP_int32 )c[ i ] ) );
+ }
+ Qxtra = SKP_min_int( Qxtra, SKP_Silk_CLZ32( c_max ) - 17 );
+
+ w_max = SKP_max_32( wXX[ 0 ], wXX[ D * D - 1 ] );
+ Qxtra = SKP_min_int( Qxtra, SKP_Silk_CLZ32( SKP_MUL( D, SKP_RSHIFT( SKP_SMULWB( w_max, c_max ), 4 ) ) ) - 5 );
+ Qxtra = SKP_max_int( Qxtra, 0 );
+ for( i = 0; i < D; i++ ) {
+ cn[ i ] = SKP_LSHIFT( ( SKP_int )c[ i ], Qxtra );
+ SKP_assert( SKP_abs(cn[i]) <= ( SKP_int16_MAX + 1 ) ); /* Check that SKP_SMLAWB can be used */
+ }
+ lshifts -= Qxtra;
+
+ /* Compute wxx - 2 * wXx * c */
+ tmp = 0;
+ for( i = 0; i < D; i++ ) {
+ tmp = SKP_SMLAWB( tmp, wXx[ i ], cn[ i ] );
+ }
+ nrg = SKP_RSHIFT( wxx, 1 + lshifts ) - tmp; /* Q: -lshifts - 1 */
+
+ /* Add c' * wXX * c, assuming wXX is symmetric */
+ tmp2 = 0;
+ for( i = 0; i < D; i++ ) {
+ tmp = 0;
+ pRow = &wXX[ i * D ];
+ for( j = i + 1; j < D; j++ ) {
+ tmp = SKP_SMLAWB( tmp, pRow[ j ], cn[ j ] );
+ }
+ tmp = SKP_SMLAWB( tmp, SKP_RSHIFT( pRow[ i ], 1 ), cn[ i ] );
+ tmp2 = SKP_SMLAWB( tmp2, tmp, cn[ i ] );
+ }
+ nrg = SKP_ADD_LSHIFT32( nrg, tmp2, lshifts ); /* Q: -lshifts - 1 */
+
+ /* Keep one bit free always, because we add them for LSF interpolation */
+ if( nrg < 1 ) {
+ nrg = 1;
+ } else if( nrg > SKP_RSHIFT( SKP_int32_MAX, lshifts + 2 ) ) {
+ nrg = SKP_int32_MAX >> 1;
+ } else {
+ nrg = SKP_LSHIFT( nrg, lshifts + 1 ); /* Q0 */
+ }
+ return nrg;
+
+}
--- /dev/null
+++ b/src/SKP_Silk_residual_energy_FIX.c
@@ -1,0 +1,89 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_main_FIX.h"
+
+/* Calculates residual energies of input subframes where all subframes have LPC_order */
+/* of preceeding samples */
+void SKP_Silk_residual_energy_FIX(
+ SKP_int32 nrgs[ NB_SUBFR ], /* O Residual energy per subframe */
+ SKP_int nrgsQ[ NB_SUBFR ], /* O Q value per subframe */
+ const SKP_int16 x[], /* I Input signal */
+ const SKP_int16 a_Q12[ 2 ][ MAX_LPC_ORDER ],/* I AR coefs for each frame half */
+ const SKP_int32 gains_Qx[ NB_SUBFR ], /* I Quantization gains in Qx */
+ const SKP_int Qx, /* I Quantization gains Q value */
+ const SKP_int subfr_length, /* I Subframe length */
+ const SKP_int LPC_order /* I LPC order */
+)
+{
+ SKP_int offset, i, j, rshift, lz1, lz2;
+ SKP_int16 *LPC_res_ptr, LPC_res[ ( MAX_FRAME_LENGTH + NB_SUBFR * MAX_LPC_ORDER ) / 2 ];
+ const SKP_int16 *x_ptr;
+ SKP_int16 S[ MAX_LPC_ORDER ];
+ SKP_int32 tmp32;
+
+ x_ptr = x;
+ offset = LPC_order + subfr_length;
+
+ /* Filter input to create the LPC residual for each frame half, and measure subframe energies */
+ for( i = 0; i < 2; i++ ) {
+ /* Calculate half frame LPC residual signal including preceeding samples */
+ SKP_memset( S, 0, LPC_order * sizeof( SKP_int16 ) );
+ SKP_Silk_LPC_analysis_filter( x_ptr, a_Q12[ i ], S, LPC_res, ( NB_SUBFR >> 1 ) * offset, LPC_order );
+
+ /* Point to first subframe of the just calculated LPC residual signal */
+ LPC_res_ptr = LPC_res + LPC_order;
+ for( j = 0; j < ( NB_SUBFR >> 1 ); j++ ) {
+ /* Measure subframe energy */
+ SKP_Silk_sum_sqr_shift( &nrgs[ i * ( NB_SUBFR >> 1 ) + j ], &rshift, LPC_res_ptr, subfr_length );
+
+ /* Set Q values for the measured energy */
+ nrgsQ[ i * ( NB_SUBFR >> 1 ) + j ] = -rshift;
+
+ /* Move to next subframe */
+ LPC_res_ptr += offset;
+ }
+ /* Move to next frame half */
+ x_ptr += ( NB_SUBFR >> 1 ) * offset;
+ }
+
+ /* Apply the squared subframe gains */
+ for( i = 0; i < NB_SUBFR; i++ ) {
+ /* Fully upscale gains and energies */
+ lz1 = SKP_Silk_CLZ32( nrgs[ i ] ) - 1;
+ lz2 = SKP_Silk_CLZ32( gains_Qx[ i ] ) - 1;
+
+ tmp32 = SKP_LSHIFT32( gains_Qx[ i ], lz2 );
+
+ /* Find squared gains */
+ tmp32 = SKP_SMMUL( tmp32, tmp32 ); // Q( 2 * ( Qx + lz2 ) - 32 )
+
+ /* Scale energies */
+ nrgs[ i ] = SKP_SMMUL( tmp32, SKP_LSHIFT32( nrgs[ i ], lz1 ) ); // Q( nrgsQ[ i ] + lz1 + 2 * ( Qx + lz2 ) - 32 - 32 )
+ nrgsQ[ i ] += lz1 + 2 * ( Qx + lz2 ) - 32 - 32;
+ }
+}
--- /dev/null
+++ b/src/SKP_Silk_scale_copy_vector16.c
@@ -1,0 +1,45 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_SigProc_FIX.h"
+
+/* Copy and multiply a vector by a constant */
+void SKP_Silk_scale_copy_vector16(
+ SKP_int16 *data_out,
+ const SKP_int16 *data_in,
+ SKP_int32 gain_Q16, /* (I): gain in Q16 */
+ const SKP_int dataSize /* (I): length */
+)
+{
+ SKP_int i;
+ SKP_int32 tmp32;
+
+ for( i = 0; i < dataSize; i++ ) {
+ tmp32 = SKP_SMULWB( gain_Q16, data_in[ i ] );
+ data_out[ i ] = (SKP_int16)SKP_CHECK_FIT16( tmp32 );
+ }
+}
--- /dev/null
+++ b/src/SKP_Silk_scale_vector.c
@@ -1,0 +1,122 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_SigProc_FIX.h"
+
+/* Multiply a vector by a constant */
+void SKP_Silk_scale_vector16_Q14(
+ SKP_int16 *data1,
+ SKP_int gain_Q14, /* Gain in Q14 */
+ SKP_int dataSize
+)
+{
+ SKP_int i;
+ SKP_int32 data32, gain_Q16;
+
+ SKP_assert( gain_Q14 < 32768 );
+ SKP_assert( gain_Q14 >= -32768 );
+
+ gain_Q16 = SKP_LSHIFT( gain_Q14, 2 );
+
+ if( (SKP_int32)( (SKP_int_ptr_size)data1 & 3 ) != 0 ) {
+ /* Input is not 4-byte aligned */
+ data1[ 0 ] = SKP_SMULWB( gain_Q16, data1[ 0 ] );
+ i = 1;
+ } else {
+ i = 0;
+ }
+ dataSize--;
+ for( ; i < dataSize; i += 2 ) {
+ data32 = *( (SKP_int32 *)&data1[ i ] ); /* load two values at once */
+ data1[ i ] = SKP_SMULWB( gain_Q16, data32 );
+ data1[ i + 1 ] = SKP_SMULWT( gain_Q16, data32 );
+ }
+ if( i == dataSize ) {
+ /* One sample left to process */
+ data1[ i ] = SKP_SMULWB( gain_Q16, data1[ i ] );
+ }
+}
+
+/* Multiply a vector by a constant */
+void SKP_Silk_scale_vector32_Q26_lshift_18(
+ SKP_int32 *data1, /* (I/O): Q0/Q18 */
+ SKP_int32 gain_Q26, /* (I): Q26 */
+ SKP_int dataSize /* (I): length */
+)
+{
+ SKP_int i;
+
+ for( i = 0; i < dataSize; i++ ) {
+ data1[ i ] = (SKP_int32)SKP_CHECK_FIT32( SKP_RSHIFT64( SKP_SMULL( data1[ i ], gain_Q26 ), 8 ) );// OUTPUT: Q18
+ }
+}
+
+/* Multiply a vector by a constant */
+void SKP_Silk_scale_vector32_16_Q14(
+ SKP_int32 *data1, /* (I/O): Q0/Q0 */
+ SKP_int gain_Q14, /* (I): Q14 */
+ SKP_int dataSize /* (I): length */
+)
+{
+ SKP_int i, gain_Q16;
+
+ if( gain_Q14 < ( SKP_int16_MAX >> 2 ) ) {
+ gain_Q16 = SKP_LSHIFT( gain_Q14, 2 );
+ for( i = 0; i < dataSize; i++ ) {
+ data1[ i ] = SKP_SMULWB( data1[ i ], gain_Q16 );
+ }
+ } else {
+ SKP_assert( gain_Q14 >= SKP_int16_MIN );
+ for( i = 0; i < dataSize; i++ ) {
+ data1[ i ] = SKP_LSHIFT( SKP_SMULWB( data1[ i ], gain_Q14 ), 2 );
+ }
+ }
+}
+
+/* Multiply a vector by a constant, does not saturate output data */
+void SKP_Silk_scale_vector32_Q16(
+ SKP_int32 *data1, /* (I/O): Q0/Q0 */
+ SKP_int32 gain_Q16, /* (I): gain in Q16 ( SKP_int16_MIN <= gain_Q16 <= SKP_int16_MAX + 65536 ) */
+ const SKP_int dataSize /* (I): length */
+)
+{
+ SKP_int i;
+
+ SKP_assert( gain_Q16 <= SKP_int16_MAX + 65536 );
+ SKP_assert( gain_Q16 >= SKP_int16_MIN );
+
+ if( gain_Q16 > SKP_int16_MAX ) {
+ gain_Q16 -= 65536;
+ for( i = 0; i < dataSize; i++ ) {
+ data1[ i ] = SKP_SMLAWB( data1[ i ], data1[ i ], gain_Q16 );
+ }
+ } else {
+ for( i = 0; i < dataSize; i++ ) {
+ data1[ i ] = SKP_SMULWB( data1[ i ], gain_Q16 );
+ }
+ }
+}
--- /dev/null
+++ b/src/SKP_Silk_schur.c
@@ -1,0 +1,91 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+/* *
+ * SKP_Silk_schur.c *
+ * *
+ * Calculates the reflection coefficients from the correlation sequence *
+ * *
+ * Copyright 2008 (c), Skype Limited *
+ * Date: 080103 *
+ * */
+#include "SKP_Silk_SigProc_FIX.h"
+
+/* Faster than schur64(), but much less accurate. */
+/* uses SMLAWB(), requiring armv5E and higher. */
+void SKP_Silk_schur(
+ SKP_int16 *rc_Q15, /* O: reflection coefficients [order] Q15 */
+ const SKP_int32 *c, /* I: correlations [order+1] */
+ const SKP_int32 order /* I: prediction order */
+)
+{
+ SKP_int k, n, lz;
+ SKP_int32 C[ SigProc_MAX_ORDER_LPC + 1 ][ 2 ];
+ SKP_int32 Ctmp1, Ctmp2, rc_tmp_Q15;
+
+ /* Get number of leading zeros */
+ lz = SKP_Silk_CLZ32( c[ 0 ] );
+
+ /* Copy correlations and adjust level to Q30 */
+ if( lz < 2 ) {
+ /* lz must be 1, so shift one to the right */
+ for( k = 0; k < order + 1; k++ ) {
+ C[ k ][ 0 ] = C[ k ][ 1 ] = SKP_RSHIFT( c[ k ], 1 );
+ }
+ } else if( lz > 2 ) {
+ /* Shift to the left */
+ lz -= 2;
+ for( k = 0; k < order + 1; k++ ) {
+ C[ k ][ 0 ] = C[ k ][ 1 ] = SKP_LSHIFT( c[k], lz );
+ }
+ } else {
+ /* No need to shift */
+ for( k = 0; k < order + 1; k++ ) {
+ C[ k ][ 0 ] = C[ k ][ 1 ] = c[ k ];
+ }
+ }
+
+ for( k = 0; k < order; k++ ) {
+
+ /* Get reflection coefficient */
+ rc_tmp_Q15 = -SKP_DIV32_16( C[ k + 1 ][ 0 ], SKP_max_32( SKP_RSHIFT( C[ 0 ][ 1 ], 15 ), 1 ) );
+
+ /* Clip (shouldn't happen for properly conditioned inputs) */
+ rc_tmp_Q15 = SKP_SAT16( rc_tmp_Q15 );
+
+ /* Store */
+ rc_Q15[ k ] = (SKP_int16)rc_tmp_Q15;
+
+ /* Update correlations */
+ for( n = 0; n < order - k; n++ ) {
+ Ctmp1 = C[ n + k + 1 ][ 0 ];
+ Ctmp2 = C[ n ][ 1 ];
+ C[ n + k + 1 ][ 0 ] = SKP_SMLAWB( Ctmp1, SKP_LSHIFT( Ctmp2, 1 ), rc_tmp_Q15 );
+ C[ n ][ 1 ] = SKP_SMLAWB( Ctmp2, SKP_LSHIFT( Ctmp1, 1 ), rc_tmp_Q15 );
+ }
+ }
+}
--- /dev/null
+++ b/src/SKP_Silk_schur64.c
@@ -1,0 +1,80 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+/* *
+ * SKP_Silk_schur64.c *
+ * *
+ * Calculates the reflection coefficients from the correlation sequence *
+ * using extra precision *
+ * *
+ * Copyright 2008 (c), Skype Limited *
+ * Date: 080103 *
+ * */
+#include "SKP_Silk_SigProc_FIX.h"
+
+/* Slower than schur(), but more accurate. */
+/* Uses SMULL(), available on armv4 */
+SKP_int32 SKP_Silk_schur64( /* O: Returns residual energy */
+ SKP_int32 rc_Q16[], /* O: Reflection coefficients [order] Q16 */
+ const SKP_int32 c[], /* I: Correlations [order+1] */
+ SKP_int32 order /* I: Prediction order */
+)
+{
+ SKP_int k, n;
+ SKP_int32 C[ SigProc_MAX_ORDER_LPC + 1 ][ 2 ];
+ SKP_int32 Ctmp1_Q30, Ctmp2_Q30, rc_tmp_Q31;
+
+ /* Check for invalid input */
+ if( c[ 0 ] <= 0 ) {
+ SKP_memset( rc_Q16, 0, order * sizeof( SKP_int32 ) );
+ return 0;
+ }
+
+ for( k = 0; k < order + 1; k++ ) {
+ C[ k ][ 0 ] = C[ k ][ 1 ] = c[ k ];
+ }
+
+ for( k = 0; k < order; k++ ) {
+ /* Get reflection coefficient: divide two Q30 values and get result in Q31 */
+ rc_tmp_Q31 = SKP_DIV32_varQ( -C[ k + 1 ][ 0 ], C[ 0 ][ 1 ], 31 );
+
+ /* Save the output */
+ rc_Q16[ k ] = SKP_RSHIFT_ROUND( rc_tmp_Q31, 15 );
+
+ /* Update correlations */
+ for( n = 0; n < order - k; n++ ) {
+ Ctmp1_Q30 = C[ n + k + 1 ][ 0 ];
+ Ctmp2_Q30 = C[ n ][ 1 ];
+
+ /* Multiply and add the highest int32 */
+ C[ n + k + 1 ][ 0 ] = Ctmp1_Q30 + SKP_SMMUL( SKP_LSHIFT( Ctmp2_Q30, 1 ), rc_tmp_Q31 );
+ C[ n ][ 1 ] = Ctmp2_Q30 + SKP_SMMUL( SKP_LSHIFT( Ctmp1_Q30, 1 ), rc_tmp_Q31 );
+ }
+ }
+
+ return( C[ 0 ][ 1 ] );
+}
--- /dev/null
+++ b/src/SKP_Silk_shell_coder.c
@@ -1,0 +1,155 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_main.h"
+
+/* shell coder; pulse-subframe length is hardcoded */
+
+SKP_INLINE void combine_pulses(
+ SKP_int *out, /* O: combined pulses vector [len] */
+ const SKP_int *in, /* I: input vector [2 * len] */
+ const SKP_int len /* I: number of OUTPUT samples */
+)
+{
+ SKP_int k;
+ for( k = 0; k < len; k++ ) {
+ out[ k ] = in[ 2 * k ] + in[ 2 * k + 1 ];
+ }
+}
+
+SKP_INLINE void encode_split(
+ SKP_Silk_range_coder_state *sRC, /* I/O: compressor data structure */
+ const SKP_int p_child1, /* I: pulse amplitude of first child subframe */
+ const SKP_int p, /* I: pulse amplitude of current subframe */
+ const SKP_uint16 *shell_table /* I: table of shell cdfs */
+)
+{
+ const SKP_uint16 *cdf;
+
+ if( p > 0 ) {
+ cdf = &shell_table[ SKP_Silk_shell_code_table_offsets[ p ] ];
+ SKP_Silk_range_encoder( sRC, p_child1, cdf );
+ }
+}
+
+SKP_INLINE void decode_split(
+ SKP_int *p_child1, /* O: pulse amplitude of first child subframe */
+ SKP_int *p_child2, /* O: pulse amplitude of second child subframe */
+ SKP_Silk_range_coder_state *sRC, /* I/O: compressor data structure */
+ const SKP_int p, /* I: pulse amplitude of current subframe */
+ const SKP_uint16 *shell_table /* I: table of shell cdfs */
+)
+{
+ SKP_int cdf_middle;
+ const SKP_uint16 *cdf;
+
+ if( p > 0 ) {
+ cdf_middle = SKP_RSHIFT( p, 1 );
+ cdf = &shell_table[ SKP_Silk_shell_code_table_offsets[ p ] ];
+ SKP_Silk_range_decoder( p_child1, sRC, cdf, cdf_middle );
+ p_child2[ 0 ] = p - p_child1[ 0 ];
+ } else {
+ p_child1[ 0 ] = 0;
+ p_child2[ 0 ] = 0;
+ }
+}
+
+/* Shell encoder, operates on one shell code frame of 16 pulses */
+void SKP_Silk_shell_encoder(
+ SKP_Silk_range_coder_state *sRC, /* I/O compressor data structure */
+ const SKP_int *pulses0 /* I data: nonnegative pulse amplitudes */
+)
+{
+ SKP_int pulses1[ 8 ], pulses2[ 4 ], pulses3[ 2 ], pulses4[ 1 ];
+
+ /* this function operates on one shell code frame of 16 pulses */
+ SKP_assert( SHELL_CODEC_FRAME_LENGTH == 16 );
+
+ /* tree representation per pulse-subframe */
+ combine_pulses( pulses1, pulses0, 8 );
+ combine_pulses( pulses2, pulses1, 4 );
+ combine_pulses( pulses3, pulses2, 2 );
+ combine_pulses( pulses4, pulses3, 1 );
+
+ encode_split( sRC, pulses3[ 0 ], pulses4[ 0 ], SKP_Silk_shell_code_table3 );
+
+ encode_split( sRC, pulses2[ 0 ], pulses3[ 0 ], SKP_Silk_shell_code_table2 );
+
+ encode_split( sRC, pulses1[ 0 ], pulses2[ 0 ], SKP_Silk_shell_code_table1 );
+ encode_split( sRC, pulses0[ 0 ], pulses1[ 0 ], SKP_Silk_shell_code_table0 );
+ encode_split( sRC, pulses0[ 2 ], pulses1[ 1 ], SKP_Silk_shell_code_table0 );
+
+ encode_split( sRC, pulses1[ 2 ], pulses2[ 1 ], SKP_Silk_shell_code_table1 );
+ encode_split( sRC, pulses0[ 4 ], pulses1[ 2 ], SKP_Silk_shell_code_table0 );
+ encode_split( sRC, pulses0[ 6 ], pulses1[ 3 ], SKP_Silk_shell_code_table0 );
+
+ encode_split( sRC, pulses2[ 2 ], pulses3[ 1 ], SKP_Silk_shell_code_table2 );
+
+ encode_split( sRC, pulses1[ 4 ], pulses2[ 2 ], SKP_Silk_shell_code_table1 );
+ encode_split( sRC, pulses0[ 8 ], pulses1[ 4 ], SKP_Silk_shell_code_table0 );
+ encode_split( sRC, pulses0[ 10 ], pulses1[ 5 ], SKP_Silk_shell_code_table0 );
+
+ encode_split( sRC, pulses1[ 6 ], pulses2[ 3 ], SKP_Silk_shell_code_table1 );
+ encode_split( sRC, pulses0[ 12 ], pulses1[ 6 ], SKP_Silk_shell_code_table0 );
+ encode_split( sRC, pulses0[ 14 ], pulses1[ 7 ], SKP_Silk_shell_code_table0 );
+}
+
+
+/* Shell decoder, operates on one shell code frame of 16 pulses */
+void SKP_Silk_shell_decoder(
+ SKP_int *pulses0, /* O data: nonnegative pulse amplitudes */
+ SKP_Silk_range_coder_state *sRC, /* I/O compressor data structure */
+ const SKP_int pulses4 /* I number of pulses per pulse-subframe */
+)
+{
+ SKP_int pulses3[ 2 ], pulses2[ 4 ], pulses1[ 8 ];
+
+ /* this function operates on one shell code frame of 16 pulses */
+ SKP_assert( SHELL_CODEC_FRAME_LENGTH == 16 );
+
+ decode_split( &pulses3[ 0 ], &pulses3[ 1 ], sRC, pulses4, SKP_Silk_shell_code_table3 );
+
+ decode_split( &pulses2[ 0 ], &pulses2[ 1 ], sRC, pulses3[ 0 ], SKP_Silk_shell_code_table2 );
+
+ decode_split( &pulses1[ 0 ], &pulses1[ 1 ], sRC, pulses2[ 0 ], SKP_Silk_shell_code_table1 );
+ decode_split( &pulses0[ 0 ], &pulses0[ 1 ], sRC, pulses1[ 0 ], SKP_Silk_shell_code_table0 );
+ decode_split( &pulses0[ 2 ], &pulses0[ 3 ], sRC, pulses1[ 1 ], SKP_Silk_shell_code_table0 );
+
+ decode_split( &pulses1[ 2 ], &pulses1[ 3 ], sRC, pulses2[ 1 ], SKP_Silk_shell_code_table1 );
+ decode_split( &pulses0[ 4 ], &pulses0[ 5 ], sRC, pulses1[ 2 ], SKP_Silk_shell_code_table0 );
+ decode_split( &pulses0[ 6 ], &pulses0[ 7 ], sRC, pulses1[ 3 ], SKP_Silk_shell_code_table0 );
+
+ decode_split( &pulses2[ 2 ], &pulses2[ 3 ], sRC, pulses3[ 1 ], SKP_Silk_shell_code_table2 );
+
+ decode_split( &pulses1[ 4 ], &pulses1[ 5 ], sRC, pulses2[ 2 ], SKP_Silk_shell_code_table1 );
+ decode_split( &pulses0[ 8 ], &pulses0[ 9 ], sRC, pulses1[ 4 ], SKP_Silk_shell_code_table0 );
+ decode_split( &pulses0[ 10 ], &pulses0[ 11 ], sRC, pulses1[ 5 ], SKP_Silk_shell_code_table0 );
+
+ decode_split( &pulses1[ 6 ], &pulses1[ 7 ], sRC, pulses2[ 3 ], SKP_Silk_shell_code_table1 );
+ decode_split( &pulses0[ 12 ], &pulses0[ 13 ], sRC, pulses1[ 6 ], SKP_Silk_shell_code_table0 );
+ decode_split( &pulses0[ 14 ], &pulses0[ 15 ], sRC, pulses1[ 7 ], SKP_Silk_shell_code_table0 );
+}
--- /dev/null
+++ b/src/SKP_Silk_sigm_Q15.c
@@ -1,0 +1,78 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+/* *
+ * SKP_sigm_Q15.c *
+ * *
+ * Approximate sigmoid function *
+ * *
+ * Copyright 2006 (c), Skype Limited *
+ * Date: 060221 *
+ * */
+#include "SKP_Silk_SigProc_FIX.h"
+/********************************/
+/* approximate sigmoid function */
+/********************************/
+/* fprintf(1, '%d, ', round(1024 * ([1 ./ (1 + exp(-(1:5))), 1] - 1 ./ (1 + exp(-(0:5)))))); */
+static const SKP_int32 sigm_LUT_slope_Q10[ 6 ] = {
+ 237, 153, 73, 30, 12, 7
+};
+/* fprintf(1, '%d, ', round(32767 * 1 ./ (1 + exp(-(0:5))))); */
+static const SKP_int32 sigm_LUT_pos_Q15[ 6 ] = {
+ 16384, 23955, 28861, 31213, 32178, 32548
+};
+/* fprintf(1, '%d, ', round(32767 * 1 ./ (1 + exp((0:5))))); */
+static const SKP_int32 sigm_LUT_neg_Q15[ 6 ] = {
+ 16384, 8812, 3906, 1554, 589, 219
+};
+
+SKP_int SKP_Silk_sigm_Q15( SKP_int in_Q5 )
+{
+ SKP_int ind;
+
+ if( in_Q5 < 0 ) {
+ /* Negative input */
+ in_Q5 = -in_Q5;
+ if( in_Q5 >= 6 * 32 ) {
+ return 0; /* Clip */
+ } else {
+ /* Linear interpolation of look up table */
+ ind = SKP_RSHIFT( in_Q5, 5 );
+ return( sigm_LUT_neg_Q15[ ind ] - SKP_SMULBB( sigm_LUT_slope_Q10[ ind ], in_Q5 & 0x1F ) );
+ }
+ } else {
+ /* Positive input */
+ if( in_Q5 >= 6 * 32 ) {
+ return 32767; /* clip */
+ } else {
+ /* Linear interpolation of look up table */
+ ind = SKP_RSHIFT( in_Q5, 5 );
+ return( sigm_LUT_pos_Q15[ ind ] + SKP_SMULBB( sigm_LUT_slope_Q10[ ind ], in_Q5 & 0x1F ) );
+ }
+ }
+}
+
--- /dev/null
+++ b/src/SKP_Silk_solve_LS_FIX.c
@@ -1,0 +1,240 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_main_FIX.h"
+
+/*****************************/
+/* Internal function headers */
+/*****************************/
+
+typedef struct {
+ SKP_int32 Q36_part;
+ SKP_int32 Q48_part;
+} inv_D_t;
+
+/* Factorize square matrix A into LDL form */
+SKP_INLINE void SKP_Silk_LDL_factorize_FIX(
+ SKP_int32 *A, /* I/O Pointer to Symetric Square Matrix */
+ SKP_int M, /* I Size of Matrix */
+ SKP_int32 *L_Q16, /* I/O Pointer to Square Upper triangular Matrix */
+ inv_D_t *inv_D /* I/O Pointer to vector holding inverted diagonal elements of D */
+);
+
+/* Solve Lx = b, when L is lower triangular and has ones on the diagonal */
+SKP_INLINE void SKP_Silk_LS_SolveFirst_FIX(
+ const SKP_int32 *L_Q16, /* I Pointer to Lower Triangular Matrix */
+ SKP_int M, /* I Dim of Matrix equation */
+ const SKP_int32 *b, /* I b Vector */
+ SKP_int32 *x_Q16 /* O x Vector */
+);
+
+/* Solve L^t*x = b, where L is lower triangular with ones on the diagonal */
+SKP_INLINE void SKP_Silk_LS_SolveLast_FIX(
+ const SKP_int32 *L_Q16, /* I Pointer to Lower Triangular Matrix */
+ const SKP_int M, /* I Dim of Matrix equation */
+ const SKP_int32 *b, /* I b Vector */
+ SKP_int32 *x_Q16 /* O x Vector */
+);
+
+SKP_INLINE void SKP_Silk_LS_divide_Q16_FIX(
+ SKP_int32 T[], /* I/O Numenator vector */
+ inv_D_t *inv_D, /* I 1 / D vector */
+ SKP_int M /* I dimension */
+);
+
+/* Solves Ax = b, assuming A is symmetric */
+void SKP_Silk_solve_LDL_FIX(
+ SKP_int32 *A, /* I Pointer to symetric square matrix A */
+ SKP_int M, /* I Size of matrix */
+ const SKP_int32 *b, /* I Pointer to b vector */
+ SKP_int32 *x_Q16 /* O Pointer to x solution vector */
+)
+{
+ SKP_int32 L_Q16[ MAX_MATRIX_SIZE * MAX_MATRIX_SIZE ];
+ SKP_int32 Y[ MAX_MATRIX_SIZE ];
+ inv_D_t inv_D[ MAX_MATRIX_SIZE ];
+
+ SKP_assert( M <= MAX_MATRIX_SIZE );
+
+ /***************************************************
+ Factorize A by LDL such that A = L*D*L',
+ where L is lower triangular with ones on diagonal
+ ****************************************************/
+ SKP_Silk_LDL_factorize_FIX( A, M, L_Q16, inv_D );
+
+ /****************************************************
+ * substitute D*L'*x = Y. ie:
+ L*D*L'*x = b => L*Y = b <=> Y = inv(L)*b
+ ******************************************************/
+ SKP_Silk_LS_SolveFirst_FIX( L_Q16, M, b, Y );
+
+ /****************************************************
+ D*L'*x = Y <=> L'*x = inv(D)*Y, because D is
+ diagonal just multiply with 1/d_i
+ ****************************************************/
+ SKP_Silk_LS_divide_Q16_FIX( Y, inv_D, M );
+
+ /****************************************************
+ x = inv(L') * inv(D) * Y
+ *****************************************************/
+ SKP_Silk_LS_SolveLast_FIX( L_Q16, M, Y, x_Q16 );
+}
+
+SKP_INLINE void SKP_Silk_LDL_factorize_FIX(
+ SKP_int32 *A, /* I Pointer to Symetric Square Matrix */
+ SKP_int M, /* I Size of Matrix */
+ SKP_int32 *L_Q16, /* I/O Pointer to Square Upper triangular Matrix */
+ inv_D_t *inv_D /* I/O Pointer to vector holding inverted diagonal elements of D */
+)
+{
+ SKP_int i, j, k, status, loop_count;
+ const SKP_int32 *ptr1, *ptr2;
+ SKP_int32 diag_min_value, tmp_32, err;
+ SKP_int32 v_Q0[ MAX_MATRIX_SIZE ], D_Q0[ MAX_MATRIX_SIZE ];
+ SKP_int32 one_div_diag_Q36, one_div_diag_Q40, one_div_diag_Q48;
+
+ SKP_assert( M <= MAX_MATRIX_SIZE );
+
+ status = 1;
+ diag_min_value = SKP_max_32( SKP_SMMUL( SKP_ADD_SAT32( A[ 0 ], A[ SKP_SMULBB( M, M ) - 1 ] ), FIND_LTP_COND_FAC_Q31 ), 1 << 9 );
+ for( loop_count = 0; loop_count < M && status == 1; loop_count++ ) {
+ status = 0;
+ for( j = 0; j < M; j++ ) {
+ ptr1 = matrix_adr( L_Q16, j, 0, M );
+ tmp_32 = 0;
+ for( i = 0; i < j; i++ ) {
+ v_Q0[ i ] = SKP_SMULWW( D_Q0[ i ], ptr1[ i ] ); /* Q0 */
+ tmp_32 = SKP_SMLAWW( tmp_32, v_Q0[ i ], ptr1[ i ] ); /* Q0 */
+ }
+ tmp_32 = SKP_SUB32( matrix_ptr( A, j, j, M ), tmp_32 );
+
+ if( tmp_32 < diag_min_value ) {
+ tmp_32 = SKP_SUB32( SKP_SMULBB( loop_count + 1, diag_min_value ), tmp_32 );
+ /* Matrix not positive semi-definite, or ill conditioned */
+ for( i = 0; i < M; i++ ) {
+ matrix_ptr( A, i, i, M ) = SKP_ADD32( matrix_ptr( A, i, i, M ), tmp_32 );
+ }
+ status = 1;
+ break;
+ }
+ D_Q0[ j ] = tmp_32; /* always < max(Correlation) */
+
+ /* two-step division */
+ one_div_diag_Q36 = SKP_INVERSE32_varQ( tmp_32, 36 ); /* Q36 */
+ one_div_diag_Q40 = SKP_LSHIFT( one_div_diag_Q36, 4 ); /* Q40 */
+ err = SKP_SUB32( 1 << 24, SKP_SMULWW( tmp_32, one_div_diag_Q40 ) ); /* Q24 */
+ one_div_diag_Q48 = SKP_SMULWW( err, one_div_diag_Q40 ); /* Q48 */
+
+ /* Save 1/Ds */
+ inv_D[ j ].Q36_part = one_div_diag_Q36;
+ inv_D[ j ].Q48_part = one_div_diag_Q48;
+
+ matrix_ptr( L_Q16, j, j, M ) = 65536; /* 1.0 in Q16 */
+ ptr1 = matrix_adr( A, j, 0, M );
+ ptr2 = matrix_adr( L_Q16, j + 1, 0, M );
+ for( i = j + 1; i < M; i++ ) {
+ tmp_32 = 0;
+ for( k = 0; k < j; k++ ) {
+ tmp_32 = SKP_SMLAWW( tmp_32, v_Q0[ k ], ptr2[ k ] ); /* Q0 */
+ }
+ tmp_32 = SKP_SUB32( ptr1[ i ], tmp_32 ); /* always < max(Correlation) */
+
+ /* tmp_32 / D_Q0[j] : Divide to Q16 */
+ matrix_ptr( L_Q16, i, j, M ) = SKP_ADD32( SKP_SMMUL( tmp_32, one_div_diag_Q48 ),
+ SKP_RSHIFT( SKP_SMULWW( tmp_32, one_div_diag_Q36 ), 4 ) );
+
+ /* go to next column */
+ ptr2 += M;
+ }
+ }
+ }
+
+ SKP_assert( status == 0 );
+}
+
+SKP_INLINE void SKP_Silk_LS_divide_Q16_FIX(
+ SKP_int32 T[], /* I/O Numenator vector */
+ inv_D_t *inv_D, /* I 1 / D vector */
+ SKP_int M /* I Order */
+)
+{
+ SKP_int i;
+ SKP_int32 tmp_32;
+ SKP_int32 one_div_diag_Q36, one_div_diag_Q48;
+
+ for( i = 0; i < M; i++ ) {
+ one_div_diag_Q36 = inv_D[ i ].Q36_part;
+ one_div_diag_Q48 = inv_D[ i ].Q48_part;
+
+ tmp_32 = T[ i ];
+ T[ i ] = SKP_ADD32( SKP_SMMUL( tmp_32, one_div_diag_Q48 ), SKP_RSHIFT( SKP_SMULWW( tmp_32, one_div_diag_Q36 ), 4 ) );
+ }
+}
+
+/* Solve Lx = b, when L is lower triangular and has ones on the diagonal */
+SKP_INLINE void SKP_Silk_LS_SolveFirst_FIX(
+ const SKP_int32 *L_Q16, /* I Pointer to Lower Triangular Matrix */
+ SKP_int M, /* I Dim of Matrix equation */
+ const SKP_int32 *b, /* I b Vector */
+ SKP_int32 *x_Q16 /* O x Vector */
+)
+{
+ SKP_int i, j;
+ const SKP_int32 *ptr32;
+ SKP_int32 tmp_32;
+
+ for( i = 0; i < M; i++ ) {
+ ptr32 = matrix_adr( L_Q16, i, 0, M );
+ tmp_32 = 0;
+ for( j = 0; j < i; j++ ) {
+ tmp_32 = SKP_SMLAWW( tmp_32, ptr32[ j ], x_Q16[ j ] );
+ }
+ x_Q16[ i ] = SKP_SUB32( b[ i ], tmp_32 );
+ }
+}
+
+/* Solve L^t*x = b, where L is lower triangular with ones on the diagonal */
+SKP_INLINE void SKP_Silk_LS_SolveLast_FIX(
+ const SKP_int32 *L_Q16, /* I Pointer to Lower Triangular Matrix */
+ const SKP_int M, /* I Dim of Matrix equation */
+ const SKP_int32 *b, /* I b Vector */
+ SKP_int32 *x_Q16 /* O x Vector */
+)
+{
+ SKP_int i, j;
+ const SKP_int32 *ptr32;
+ SKP_int32 tmp_32;
+
+ for( i = M - 1; i >= 0; i-- ) {
+ ptr32 = matrix_adr( L_Q16, 0, i, M );
+ tmp_32 = 0;
+ for( j = M - 1; j > i; j-- ) {
+ tmp_32 = SKP_SMLAWW( tmp_32, ptr32[ SKP_SMULBB( j, M ) ], x_Q16[ j ] );
+ }
+ x_Q16[ i ] = SKP_SUB32( b[ i ], tmp_32 );
+ }
+}
--- /dev/null
+++ b/src/SKP_Silk_sort.c
@@ -1,0 +1,195 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+/* Insertion sort (fast for already almost sorted arrays): */
+/* Best case: O(n) for an already sorted array */
+/* Worst case: O(n^2) for an inversely sorted array */
+/* */
+/* To be implemented: */
+/* Shell short: http://en.wikipedia.org/wiki/Shell_sort */
+
+#include "SKP_Silk_SigProc_FIX.h"
+
+void SKP_Silk_insertion_sort_increasing(
+ SKP_int32 *a, /* I/O: Unsorted / Sorted vector */
+ SKP_int *index, /* O: Index vector for the sorted elements */
+ const SKP_int L, /* I: Vector length */
+ const SKP_int K /* I: Number of correctly sorted positions */
+)
+{
+ SKP_int32 value;
+ SKP_int i, j;
+
+ /* Safety checks */
+ SKP_assert( K > 0 );
+ SKP_assert( L > 0 );
+ SKP_assert( L >= K );
+
+ /* Write start indices in index vector */
+ for( i = 0; i < K; i++ ) {
+ index[ i ] = i;
+ }
+
+ /* Sort vector elements by value, increasing order */
+ for( i = 1; i < K; i++ ) {
+ value = a[ i ];
+ for( j = i - 1; ( j >= 0 ) && ( value < a[ j ] ); j-- ) {
+ a[ j + 1 ] = a[ j ]; /* Shift value */
+ index[ j + 1 ] = index[ j ]; /* Shift index */
+ }
+ a[ j + 1 ] = value; /* Write value */
+ index[ j + 1 ] = i; /* Write index */
+ }
+
+ /* If less than L values are asked check the remaining values, */
+ /* but only spend CPU to ensure that the K first values are correct */
+ for( i = K; i < L; i++ ) {
+ value = a[ i ];
+ if( value < a[ K - 1 ] ) {
+ for( j = K - 2; ( j >= 0 ) && ( value < a[ j ] ); j-- ) {
+ a[ j + 1 ] = a[ j ]; /* Shift value */
+ index[ j + 1 ] = index[ j ]; /* Shift index */
+ }
+ a[ j + 1 ] = value; /* Write value */
+ index[ j + 1 ] = i; /* Write index */
+ }
+ }
+}
+
+void SKP_Silk_insertion_sort_decreasing(
+ SKP_int *a, /* I/O: Unsorted / Sorted vector */
+ SKP_int *index, /* O: Index vector for the sorted elements */
+ const SKP_int L, /* I: Vector length */
+ const SKP_int K /* I: Number of correctly sorted positions */
+)
+{
+ SKP_int value;
+ SKP_int i, j;
+
+ /* Safety checks */
+ SKP_assert( K > 0 );
+ SKP_assert( L > 0 );
+ SKP_assert( L >= K );
+
+ /* Write start indices in index vector */
+ for( i = 0; i < K; i++ ) {
+ index[ i ] = i;
+ }
+
+ /* Sort vector elements by value, decreasing order */
+ for( i = 1; i < K; i++ ) {
+ value = a[ i ];
+ for( j = i - 1; ( j >= 0 ) && ( value > a[ j ] ); j-- ) {
+ a[ j + 1 ] = a[ j ]; /* Shift value */
+ index[ j + 1 ] = index[ j ]; /* Shift index */
+ }
+ a[ j + 1 ] = value; /* Write value */
+ index[ j + 1 ] = i; /* Write index */
+ }
+
+ /* If less than L values are asked check the remaining values, */
+ /* but only spend CPU to ensure that the K first values are correct */
+ for( i = K; i < L; i++ ) {
+ value = a[ i ];
+ if( value > a[ K - 1 ] ) {
+ for( j = K - 2; ( j >= 0 ) && ( value > a[ j ] ); j-- ) {
+ a[ j + 1 ] = a[ j ]; /* Shift value */
+ index[ j + 1 ] = index[ j ]; /* Shift index */
+ }
+ a[ j + 1 ] = value; /* Write value */
+ index[ j + 1 ] = i; /* Write index */
+ }
+ }
+}
+
+void SKP_Silk_insertion_sort_decreasing_int16(
+ SKP_int16 *a, /* I/O: Unsorted / Sorted vector */
+ SKP_int *index, /* O: Index vector for the sorted elements */
+ const SKP_int L, /* I: Vector length */
+ const SKP_int K /* I: Number of correctly sorted positions */
+)
+{
+ SKP_int i, j;
+ SKP_int value;
+
+ /* Safety checks */
+ SKP_assert( K > 0 );
+ SKP_assert( L > 0 );
+ SKP_assert( L >= K );
+
+ /* Write start indices in index vector */
+ for( i = 0; i < K; i++ ) {
+ index[ i ] = i;
+ }
+
+ /* Sort vector elements by value, decreasing order */
+ for( i = 1; i < K; i++ ) {
+ value = a[ i ];
+ for( j = i - 1; ( j >= 0 ) && ( value > a[ j ] ); j-- ) {
+ a[ j + 1 ] = a[ j ]; /* Shift value */
+ index[ j + 1 ] = index[ j ]; /* Shift index */
+ }
+ a[ j + 1 ] = value; /* Write value */
+ index[ j + 1 ] = i; /* Write index */
+ }
+
+ /* If less than L values are asked check the remaining values, */
+ /* but only spend CPU to ensure that the K first values are correct */
+ for( i = K; i < L; i++ ) {
+ value = a[ i ];
+ if( value > a[ K - 1 ] ) {
+ for( j = K - 2; ( j >= 0 ) && ( value > a[ j ] ); j-- ) {
+ a[ j + 1 ] = a[ j ]; /* Shift value */
+ index[ j + 1 ] = index[ j ]; /* Shift index */
+ }
+ a[ j + 1 ] = value; /* Write value */
+ index[ j + 1 ] = i; /* Write index */
+ }
+ }
+}
+
+void SKP_Silk_insertion_sort_increasing_all_values(
+ SKP_int *a, /* I/O: Unsorted / Sorted vector */
+ const SKP_int L /* I: Vector length */
+)
+{
+ SKP_int value;
+ SKP_int i, j;
+
+ /* Safety checks */
+ SKP_assert( L > 0 );
+
+ /* Sort vector elements by value, increasing order */
+ for( i = 1; i < L; i++ ) {
+ value = a[ i ];
+ for( j = i - 1; ( j >= 0 ) && ( value < a[ j ] ); j-- ) {
+ a[ j + 1 ] = a[ j ]; /* Shift value */
+ }
+ a[ j + 1 ] = value; /* Write value */
+ }
+}
+
--- /dev/null
+++ b/src/SKP_Silk_structs.h
@@ -1,0 +1,381 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#ifndef SKP_SILK_STRUCTS_H
+#define SKP_SILK_STRUCTS_H
+
+#include "SKP_Silk_typedef.h"
+#include "SKP_Silk_SigProc_FIX.h"
+#include "SKP_Silk_define.h"
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+
+/************************************/
+/* Noise shaping quantization state */
+/************************************/
+typedef struct {
+ SKP_int16 xq[ 2 * MAX_FRAME_LENGTH ]; /* Buffer for quantized output signal */
+ SKP_int32 sLTP_shp_Q10[ 2 * MAX_FRAME_LENGTH ];
+ SKP_int32 sLPC_Q14[ MAX_FRAME_LENGTH / NB_SUBFR + MAX_LPC_ORDER ];
+ SKP_int32 sLF_AR_shp_Q12;
+ SKP_int lagPrev;
+ SKP_int sLTP_buf_idx;
+ SKP_int sLTP_shp_buf_idx;
+ SKP_int32 rand_seed;
+ SKP_int32 prev_inv_gain_Q16;
+ SKP_int rewhite_flag;
+} SKP_Silk_nsq_state; /* FIX*/
+
+/* Struct for Low BitRate Redundant (LBRR) information */
+typedef struct {
+ SKP_uint8 payload[ MAX_ARITHM_BYTES ];
+ SKP_int nBytes; /* Number of bytes in payload */
+ SKP_int usage; /* Tells how the payload should be used as FEC */
+} SKP_SILK_LBRR_struct;
+
+/********************************/
+/* VAD state */
+/********************************/
+typedef struct {
+ SKP_int32 AnaState[ 2 ]; /* Analysis filterbank state: 0-8 kHz */
+ SKP_int32 AnaState1[ 2 ]; /* Analysis filterbank state: 0-4 kHz */
+ SKP_int32 AnaState2[ 2 ]; /* Analysis filterbank state: 0-2 kHz */
+ SKP_int32 XnrgSubfr[ VAD_N_BANDS ]; /* Subframe energies */
+ SKP_int32 NrgRatioSmth_Q8[ VAD_N_BANDS ]; /* Smoothed energy level in each band */
+ SKP_int16 HPstate; /* State of differentiator in the lowest band */
+ SKP_int32 NL[ VAD_N_BANDS ]; /* Noise energy level in each band */
+ SKP_int32 inv_NL[ VAD_N_BANDS ]; /* Inverse noise energy level in each band */
+ SKP_int32 NoiseLevelBias[ VAD_N_BANDS ]; /* Noise level estimator bias/offset */
+ SKP_int32 counter; /* Frame counter used in the initial phase */
+} SKP_Silk_VAD_state;
+
+/*******************************/
+/* Range encoder/decoder state */
+/*******************************/
+typedef struct {
+ SKP_int32 bufferLength;
+ SKP_int32 bufferIx;
+ SKP_uint32 base_Q32;
+ SKP_uint32 range_Q16;
+ SKP_int32 error;
+ SKP_uint8 buffer[ MAX_ARITHM_BYTES ]; /* Buffer containing payload */
+} SKP_Silk_range_coder_state;
+
+/* Input frequency range detection struct */
+typedef struct {
+ SKP_int32 S_HP_8_kHz[ NB_SOS ][ 2 ]; /* HP filter State */
+ SKP_int32 ConsecSmplsAboveThres;
+ SKP_int32 ActiveSpeech_ms; /* Accumulated time with active speech */
+ SKP_int SWB_detected; /* Flag to indicate SWB input */
+ SKP_int WB_detected; /* Flag to indicate WB input */
+} SKP_Silk_detect_SWB_state;
+
+#if SWITCH_TRANSITION_FILTERING
+/* Variable cut-off low-pass filter state */
+typedef struct {
+ SKP_int32 In_LP_State[ 2 ]; /* Low pass filter state */
+ SKP_int32 transition_frame_no; /* Counter which is mapped to a cut-off frequency */
+ SKP_int mode; /* Operating mode, 0: switch down, 1: switch up */
+} SKP_Silk_LP_state;
+#endif
+
+/* Structure for one stage of MSVQ */
+typedef struct {
+ const SKP_int32 nVectors;
+ const SKP_int16 *CB_NLSF_Q15;
+ const SKP_int16 *Rates_Q5;
+} SKP_Silk_NLSF_CBS;
+
+/* Structure containing NLSF MSVQ codebook */
+typedef struct {
+ const SKP_int32 nStages;
+
+ /* Fields for (de)quantizing */
+ const SKP_Silk_NLSF_CBS *CBStages;
+ const SKP_int *NDeltaMin_Q15;
+
+ /* Fields for arithmetic (de)coding */
+ const SKP_uint16 *CDF;
+ const SKP_uint16 * const *StartPtr;
+ const SKP_int *MiddleIx;
+} SKP_Silk_NLSF_CB_struct;
+
+/********************************/
+/* Encoder state */
+/********************************/
+typedef struct {
+ SKP_Silk_range_coder_state sRC; /* Range coder state */
+ SKP_Silk_range_coder_state sRC_LBRR; /* Range coder state (for low bitrate redundancy) */
+#if HIGH_PASS_INPUT
+ SKP_int32 In_HP_State[ 2 ]; /* High pass filter state */
+#endif
+#if SWITCH_TRANSITION_FILTERING
+ SKP_Silk_LP_state sLP; /* Low pass filter state */
+#endif
+ SKP_Silk_VAD_state sVAD; /* Voice activity detector state */
+
+ SKP_int LBRRprevLastGainIndex;
+ SKP_int prev_sigtype;
+ SKP_int typeOffsetPrev; /* Previous signal type and quantization offset */
+ SKP_int prevLag;
+ SKP_int prev_lagIndex;
+ SKP_int fs_kHz; /* Sampling frequency (kHz) */
+ SKP_int fs_kHz_changed; /* Did we switch yet? */
+ SKP_int frame_length; /* Frame length (samples) */
+ SKP_int subfr_length; /* Subframe length (samples) */
+ SKP_int la_pitch; /* Look-ahead for pitch analysis (samples) */
+ SKP_int la_shape; /* Look-ahead for noise shape analysis (samples) */
+ SKP_int32 TargetRate_bps; /* Target bitrate (bps) */
+ SKP_int PacketSize_ms; /* Number of milliseconds to put in each packet */
+ SKP_int PacketLoss_perc; /* Packet loss rate measured by farend */
+ SKP_int32 frameCounter;
+ SKP_int Complexity; /* Complexity setting: 0-> low; 1-> medium; 2->high */
+ SKP_int nStatesDelayedDecision; /* Number of states in delayed decision quantization */
+ SKP_int useInterpolatedNLSFs; /* Flag for using NLSF interpolation */
+ SKP_int shapingLPCOrder; /* Filter order for noise shaping filters */
+ SKP_int predictLPCOrder; /* Filter order for prediction filters */
+ SKP_int pitchEstimationComplexity; /* Complexity level for pitch estimator */
+ SKP_int pitchEstimationLPCOrder; /* Whitening filter order for pitch estimator */
+ SKP_int LTPQuantLowComplexity; /* Flag for low complexity LTP quantization */
+ SKP_int NLSF_MSVQ_Survivors; /* Number of survivors in NLSF MSVQ */
+ SKP_int first_frame_after_reset; /* Flag for deactivating NLSF interp. and fluc. reduction after resets */
+
+ /* Input/output buffering */
+ SKP_int16 inputBuf[ MAX_FRAME_LENGTH ]; /* buffer containin input signal */
+ SKP_int inputBufIx;
+ SKP_int nFramesInPayloadBuf; /* number of frames sitting in outputBuf */
+ SKP_int nBytesInPayloadBuf; /* number of bytes sitting in outputBuf */
+
+ /* Parameters For LTP scaling Control */
+ SKP_int frames_since_onset;
+
+ const SKP_Silk_NLSF_CB_struct *psNLSF_CB[ 2 ]; /* Pointers to voiced/unvoiced NLSF codebooks */
+
+ /* Struct for Inband LBRR */
+ SKP_SILK_LBRR_struct LBRR_buffer[ MAX_LBRR_DELAY ];
+ SKP_int oldest_LBRR_idx;
+ SKP_int LBRR_enabled;
+ SKP_int LBRR_GainIncreases; /* Number of shifts to Gains to get LBRR rate Voiced frames */
+
+ /* Bitrate control */
+ SKP_int32 bitrateDiff; /* accumulated diff. between the target bitrate and the SWB/WB limits */
+
+#if LOW_COMPLEXITY_ONLY
+ /* state for downsampling from 24 to 16 kHz in low complexity mode */
+ SKP_int16 resample24To16state[ SigProc_Resample_2_3_coarse_NUM_FIR_COEFS - 1 ];
+#else
+ SKP_int32 resample24To16state[ 11 ]; /* state for downsampling from 24 to 16 kHz */
+#endif
+ SKP_int32 resample24To12state[ 6 ]; /* state for downsampling from 24 to 12 kHz */
+ SKP_int32 resample24To8state[ 7 ]; /* state for downsampling from 24 to 8 kHz */
+ SKP_int32 resample16To12state[ 15 ]; /* state for downsampling from 16 to 12 kHz */
+ SKP_int32 resample16To8state[ 6 ]; /* state for downsampling from 16 to 8 kHz */
+#if LOW_COMPLEXITY_ONLY
+ /* state for downsampling from 12 to 8 kHz in low complexity mode */
+ SKP_int16 resample12To8state[ SigProc_Resample_2_3_coarse_NUM_FIR_COEFS - 1 ];
+#else
+ SKP_int32 resample12To8state[ 11 ]; /* state for downsampling from 12 to 8 kHz */
+#endif
+
+ /* DTX */
+ SKP_int noSpeechCounter; /* Counts concecutive nonactive frames, used by DTX */
+ SKP_int useDTX; /* Flag to enable DTX */
+ SKP_int inDTX; /* Flag to signal DTX period */
+ SKP_int vadFlag; /* Flag to indicate Voice Activity */
+
+ /* Struct for detecting SWB input */
+ SKP_Silk_detect_SWB_state sSWBdetect;
+
+
+ /********************************************/
+ /* Buffers etc used by the new bitstream V4 */
+ /********************************************/
+ SKP_int q[ MAX_FRAME_LENGTH * MAX_FRAMES_PER_PACKET ]; /* pulse signal buffer */
+ SKP_int q_LBRR[ MAX_FRAME_LENGTH * MAX_FRAMES_PER_PACKET ]; /* pulse signal buffer */
+ SKP_int sigtype[ MAX_FRAMES_PER_PACKET ];
+ SKP_int QuantOffsetType[ MAX_FRAMES_PER_PACKET ];
+ SKP_int extension_layer; /* Add extension layer */
+ SKP_int bitstream_v; /* Holds bitstream version */
+} SKP_Silk_encoder_state;
+
+
+/************************/
+/* Encoder control */
+/************************/
+typedef struct {
+ /* Quantization indices */
+ SKP_int lagIndex;
+ SKP_int contourIndex;
+ SKP_int PERIndex;
+ SKP_int LTPIndex[ NB_SUBFR ];
+ SKP_int NLSFIndices[ NLSF_MSVQ_MAX_CB_STAGES ]; /* NLSF path of quantized LSF vector */
+ SKP_int NLSFInterpCoef_Q2;
+ SKP_int GainsIndices[ NB_SUBFR ];
+ SKP_int32 Seed;
+ SKP_int LTP_scaleIndex;
+ SKP_int RateLevelIndex;
+ SKP_int QuantOffsetType;
+ SKP_int sigtype;
+
+ /* Prediction and coding parameters */
+ SKP_int pitchL[ NB_SUBFR ];
+
+ SKP_int LBRR_usage; /* Low bitrate redundancy usage */
+} SKP_Silk_encoder_control;
+
+/* Struct for Packet Loss Concealment */
+typedef struct {
+ SKP_int32 pitchL_Q8; /* Pitch lag to use for voiced concealment */
+ SKP_int16 LTPCoef_Q14[ LTP_ORDER ]; /* LTP coeficients to use for voiced concealment */
+ SKP_int16 prevLPC_Q12[ MAX_LPC_ORDER ];
+ SKP_int last_frame_lost; /* Was previous frame lost */
+ SKP_int32 rand_seed; /* Seed for unvoiced signal generation */
+ SKP_int16 randScale_Q14; /* Scaling of unvoiced random signal */
+ SKP_int32 conc_energy;
+ SKP_int conc_energy_shift;
+ SKP_int16 prevLTP_scale_Q14;
+ SKP_int32 prevGain_Q16[ NB_SUBFR ];
+ SKP_int fs_kHz;
+} SKP_Silk_PLC_struct;
+
+/* Struct for CNG */
+typedef struct {
+ SKP_int32 CNG_exc_buf_Q10[ MAX_FRAME_LENGTH ];
+ SKP_int CNG_smth_NLSF_Q15[ MAX_LPC_ORDER ];
+ SKP_int32 CNG_synth_state[ MAX_LPC_ORDER ];
+ SKP_int32 CNG_smth_Gain_Q16;
+ SKP_int32 rand_seed;
+ SKP_int fs_kHz;
+} SKP_Silk_CNG_struct;
+
+/********************************/
+/* Decoder state */
+/********************************/
+typedef struct {
+ SKP_Silk_range_coder_state sRC; /* Range coder state */
+ SKP_int32 prev_inv_gain_Q16;
+ SKP_int32 sLTP_Q16[ 2 * MAX_FRAME_LENGTH ];
+ SKP_int32 sLPC_Q14[ MAX_FRAME_LENGTH / NB_SUBFR + MAX_LPC_ORDER ];
+ SKP_int32 exc_Q10[ MAX_FRAME_LENGTH ];
+ SKP_int32 res_Q10[ MAX_FRAME_LENGTH ];
+ SKP_int16 outBuf[ 2 * MAX_FRAME_LENGTH ]; /* Buffer for output signal */
+ SKP_int sLTP_buf_idx; /* LTP_buf_index */
+ SKP_int lagPrev; /* Previous Lag */
+ SKP_int LastGainIndex; /* Previous gain index */
+ SKP_int LastGainIndex_EnhLayer; /* Previous gain index */
+ SKP_int typeOffsetPrev; /* Previous signal type and quantization offset */
+ SKP_int32 HPState[ DEC_HP_ORDER ]; /* HP filter state */
+ const SKP_int16 *HP_A; /* HP filter AR coefficients */
+ const SKP_int16 *HP_B; /* HP filter MA coefficients */
+ SKP_int fs_kHz; /* Sampling frequency in kHz */
+ SKP_int frame_length; /* Frame length (samples) */
+ SKP_int subfr_length; /* Subframe length (samples) */
+ SKP_int LPC_order; /* LPC order */
+ SKP_int prevNLSF_Q15[ MAX_LPC_ORDER ]; /* Used to interpolate LSFs */
+ SKP_int first_frame_after_reset; /* Flag for deactivating NLSF interp. and fluc. reduction after resets */
+
+ /* For buffering payload in case of more frames per packet */
+ SKP_int nBytesLeft;
+ SKP_int nFramesDecoded;
+ SKP_int nFramesInPacket;
+ SKP_int moreInternalDecoderFrames;
+ SKP_int FrameTermination;
+
+ SKP_int32 resampleState[ 15 ];
+
+ const SKP_Silk_NLSF_CB_struct *psNLSF_CB[ 2 ]; /* Pointers to voiced/unvoiced NLSF codebooks */
+
+ SKP_int sigtype[ MAX_FRAMES_PER_PACKET ];
+ SKP_int QuantOffsetType[ MAX_FRAMES_PER_PACKET ];
+ SKP_int GainsIndices[ MAX_FRAMES_PER_PACKET ][ NB_SUBFR ];
+ SKP_int GainsIndices_EnhLayer[ MAX_FRAMES_PER_PACKET ][ NB_SUBFR ];
+ SKP_int NLSFIndices[ MAX_FRAMES_PER_PACKET ][ NLSF_MSVQ_MAX_CB_STAGES ];
+ SKP_int NLSFInterpCoef_Q2[ MAX_FRAMES_PER_PACKET ];
+ SKP_int lagIndex[ MAX_FRAMES_PER_PACKET ];
+ SKP_int contourIndex[ MAX_FRAMES_PER_PACKET ];
+ SKP_int PERIndex[ MAX_FRAMES_PER_PACKET ];
+ SKP_int LTPIndex[ MAX_FRAMES_PER_PACKET ][ NB_SUBFR ];
+ SKP_int LTP_scaleIndex[ MAX_FRAMES_PER_PACKET ];
+ SKP_int Seed[ MAX_FRAMES_PER_PACKET ];
+ SKP_int vadFlagBuf[ MAX_FRAMES_PER_PACKET ];
+
+ /* Parameters used to investigate if inband FEC is used */
+ SKP_int vadFlag;
+ SKP_int no_FEC_counter; /* Counts number of frames wo inband FEC */
+ SKP_int inband_FEC_offset; /* 0: no FEC, 1: FEC with 1 packet offset, 2: FEC w 2 packets offset */
+
+ /* CNG state */
+ SKP_Silk_CNG_struct sCNG;
+
+ /* Stuff used for PLC */
+ SKP_Silk_PLC_struct sPLC;
+ SKP_int lossCnt;
+ SKP_int prev_sigtype; /* Previous sigtype */
+#ifdef USE_INTERPOLATION_PLC
+ SKP_int16 prevQuant[ MAX_FRAME_LENGTH ];
+ SKP_int prevPitchL[ NB_SUBFR ]; /* Previous Lags used */
+ SKP_int16 prevLTPCoef_Q14[ NB_SUBFR * LTP_ORDER ]; /* Previous LTCoefs used */
+ SKP_int16 prevAR_Q12[ MAX_LPC_ORDER ];
+ SKP_int interpolDistance; /* Number of frames between old and new recieved packet */
+#endif
+
+
+
+
+ SKP_int bitstream_v; /* Holds bitstream version */
+} SKP_Silk_decoder_state;
+
+/************************/
+/* Decoder control */
+/************************/
+typedef struct {
+ /* prediction and coding parameters */
+ SKP_int pitchL[ NB_SUBFR ];
+ SKP_int32 Gains_Q16[ NB_SUBFR ];
+ SKP_int32 Seed;
+ /* holds interpolated and final coefficients, 4-byte aligned */
+ SKP_array_of_int16_4_byte_aligned( PredCoef_Q12[ 2 ], MAX_LPC_ORDER );
+ SKP_int16 LTPCoef_Q14[ LTP_ORDER * NB_SUBFR ];
+ SKP_int LTP_scale_Q14;
+
+ /* quantization indices */
+ SKP_int PERIndex;
+ SKP_int RateLevelIndex;
+ SKP_int QuantOffsetType;
+ SKP_int sigtype;
+ SKP_int NLSFInterpCoef_Q2;
+} SKP_Silk_decoder_control;
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
--- /dev/null
+++ b/src/SKP_Silk_structs_FIX.h
@@ -1,0 +1,195 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#ifndef SKP_SILK_STRUCTS_FIX_H
+#define SKP_SILK_STRUCTS_FIX_H
+
+#include "SKP_Silk_typedef.h"
+#include "SKP_Silk_define_FIX.h"
+#include "SKP_Silk_main.h"
+#include "SKP_Silk_structs.h"
+
+#if LOW_COMPLEXITY_ONLY
+#include "SKP_Silk_resample_rom.h"
+#endif
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+/********************************/
+/* Noise shaping analysis state */
+/********************************/
+typedef struct {
+ SKP_int LastGainIndex;
+ SKP_int32 HarmBoost_smth_Q16;
+ SKP_int32 HarmShapeGain_smth_Q16;
+ SKP_int32 Tilt_smth_Q16;
+} SKP_Silk_shape_state_FIX;
+
+/********************************/
+/* Prefilter state */
+/********************************/
+typedef struct {
+ SKP_int16 sLTP_shp1[ LTP_BUF_LENGTH ];
+ SKP_int32 sAR_shp2_Q14[ SHAPE_LPC_ORDER_MAX ];
+ SKP_int16 sLTP_shp2_FIX[ LTP_BUF_LENGTH ];
+ SKP_int sLTP_shp_buf_idx1;
+ SKP_int sAR_shp_buf_idx2;
+ SKP_int sLTP_shp_buf_idx2;
+ SKP_int32 sLF_AR_shp1_Q12;
+ SKP_int32 sLF_MA_shp1_Q12;
+ SKP_int32 sLF_AR_shp2_Q12;
+ SKP_int32 sLF_MA_shp2_Q12;
+ SKP_int sHarmHP;
+ SKP_int32 rand_seed;
+ SKP_int lagPrev;
+} SKP_Silk_prefilter_state_FIX;
+
+/*****************************/
+/* Prediction analysis state */
+/*****************************/
+typedef struct {
+ SKP_int pitch_LPC_win_length;
+ SKP_int min_pitch_lag; /* Lowest possible pitch lag (samples) */
+ SKP_int max_pitch_lag; /* Highest possible pitch lag (samples) */
+ SKP_int prev_NLSFq_Q15[ MAX_LPC_ORDER ]; /* Prev. quant. normalized LSF vector */
+} SKP_Silk_predict_state_FIX;
+
+#if( defined( SAVE_ALL_INTERNAL_DATA ) || defined( USE_FLT2FIX_WRAPPER ) )
+/*******************************************/
+/* Structure containing NLSF MSVQ codebook */
+/*******************************************/
+/* structure for one stage of MSVQ */
+typedef struct {
+ const SKP_int32 nVectors;
+ const SKP_float *CB;
+ const SKP_float *Rates;
+} SKP_Silk_NLSF_CBS_FLP_TMP;
+
+typedef struct {
+ const SKP_int32 nStages;
+
+ /* fields for (de)quantizing */
+ const SKP_Silk_NLSF_CBS_FLP_TMP *CBStages;
+ const SKP_float *NDeltaMin;
+
+ /* fields for arithmetic (de)coding */
+ const SKP_uint16 *CDF;
+ const SKP_uint16 * const *StartPtr;
+ const SKP_int *MiddleIx;
+} SKP_Silk_NLSF_CB_struct_FLP_TMP;
+#endif
+
+/********************************/
+/* Encoder state FIX */
+/********************************/
+typedef struct {
+ SKP_Silk_encoder_state sCmn; /* Common struct, shared with floating-point code */
+
+#if HIGH_PASS_INPUT
+ SKP_int32 variable_HP_smth1_Q15; /* State of first smoother */
+ SKP_int32 variable_HP_smth2_Q15; /* State of second smoother */
+#endif
+ SKP_Silk_shape_state_FIX sShape; /* Shape state */
+ SKP_Silk_prefilter_state_FIX sPrefilt; /* Prefilter State */
+ SKP_Silk_predict_state_FIX sPred; /* Prediction state */
+ SKP_Silk_nsq_state sNSQ; /* Noise Shape Quantizer State */
+ SKP_Silk_nsq_state sNSQ_LBRR; /* Noise Shape Quantizer State ( for low bitrate redundancy ) */
+
+ /* Function pointer to noise shaping quantizer (will be set to SKP_Silk_NSQ or SKP_Silk_NSQ_del_dec) */
+ void (* NoiseShapingQuantizer)( SKP_Silk_encoder_state *, SKP_Silk_encoder_control *, SKP_Silk_nsq_state *, const SKP_int16 *,
+ SKP_int *, const SKP_int, const SKP_int16 *, const SKP_int16 *, const SKP_int16 *, const SKP_int *,
+ const SKP_int *, const SKP_int32 *, const SKP_int32 *, SKP_int, const SKP_int
+ );
+
+ /* Buffer for find pitch and noise shape analysis */
+ SKP_array_of_int16_4_byte_aligned( x_buf, 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX );
+ SKP_int LTPCorr_Q15; /* Normalized correlation from pitch lag estimator */
+ SKP_int mu_LTP_Q8; /* Rate-distortion tradeoff in LTP quantization */
+ SKP_int32 SNR_dB_Q7; /* Quality setting */
+ SKP_int32 avgGain_Q16; /* average gain during active speech */
+ SKP_int32 avgGain_Q16_one_bit_per_sample; /* average gain during active speech */
+ SKP_int BufferedInChannel_ms; /* Simulated number of ms buffer because of exceeded TargetRate_bps */
+ SKP_int speech_activity_Q8; /* Speech activity in Q8 */
+ SKP_int32 pitchEstimationThreshold_Q16; /* Threshold for pitch estimator */
+
+ /* Parameters For LTP scaling Control */
+ SKP_int prevLTPredCodGain_Q7;
+ SKP_int HPLTPredCodGain_Q7;
+
+ SKP_int32 inBandFEC_SNR_comp_Q8; /* Compensation to SNR_dB when using inband FEC Voiced */
+
+#ifdef USE_FLT2FIX_WRAPPER
+ const SKP_Silk_NLSF_CB_struct_FLP_TMP *psNLSF_CB_FLP[ 2 ]; /* Pointers to voiced/unvoiced NLSF codebooks */
+#endif
+} SKP_Silk_encoder_state_FIX;
+
+/************************/
+/* Encoder control FIX */
+/************************/
+typedef struct {
+ SKP_Silk_encoder_control sCmn; /* Common struct, shared with floating-point code */
+
+ /* Prediction and coding parameters */
+ SKP_int32 Gains_Q16[ NB_SUBFR ];
+ SKP_array_of_int16_4_byte_aligned( PredCoef_Q12[ 2 ], MAX_LPC_ORDER );
+ SKP_int16 LTPCoef_Q14[ LTP_ORDER * NB_SUBFR ];
+ SKP_int LTP_scale_Q14;
+
+ /* Noise shaping parameters */
+ /* Testing */
+ SKP_array_of_int16_4_byte_aligned( AR1_Q13, NB_SUBFR * SHAPE_LPC_ORDER_MAX );
+ SKP_array_of_int16_4_byte_aligned( AR2_Q13, NB_SUBFR * SHAPE_LPC_ORDER_MAX );
+ SKP_int32 LF_shp_Q14[ NB_SUBFR ]; /* Packs two int16 coefficients per int32 value */
+ SKP_int GainsPre_Q14[ NB_SUBFR ];
+ SKP_int HarmBoost_Q14[ NB_SUBFR ];
+ SKP_int Tilt_Q14[ NB_SUBFR ];
+ SKP_int HarmShapeGain_Q14[ NB_SUBFR ];
+ SKP_int Lambda_Q10;
+ SKP_int input_quality_Q14;
+ SKP_int coding_quality_Q14;
+ SKP_int32 pitch_freq_low_Hz;
+ SKP_int current_SNR_dB_Q7;
+
+ /* measures */
+ SKP_int sparseness_Q8;
+ SKP_int LTPredCodGain_Q7;
+ SKP_int input_quality_bands_Q15[ VAD_N_BANDS ];
+ SKP_int input_tilt_Q15;
+ SKP_int32 ResNrg[ NB_SUBFR ]; /* Residual energy per subframe */
+ SKP_int ResNrgQ[ NB_SUBFR ]; /* Q domain for the residual energy > 0 */
+
+} SKP_Silk_encoder_control_FIX;
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
--- /dev/null
+++ b/src/SKP_Silk_sum_sqr_shift.c
@@ -1,0 +1,98 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+/* *
+ * SKP_Silk_sum_sqr_shift.c *
+ * *
+ * compute number of bits to right shift the sum of squares of a vector *
+ * of int16s to make it fit in an int32 *
+ * *
+ * Copyright 2006-2008 (c), Skype Limited *
+ * */
+#include "SKP_Silk_SigProc_FIX.h"
+/* Compute number of bits to right shift the sum of squares of a vector */
+/* of int16s to make it fit in an int32 */
+void SKP_Silk_sum_sqr_shift(
+ SKP_int32 *energy, /* O Energy of x, after shifting to the right */
+ SKP_int *shift, /* O Number of bits right shift applied to energy */
+ const SKP_int16 *x, /* I Input vector */
+ SKP_int len /* I Length of input vector */
+)
+{
+ SKP_int i, shft;
+ SKP_int32 in32, nrg_tmp, nrg;
+
+ if( (SKP_int32)( (SKP_int_ptr_size)x & 2 ) != 0 ) {
+ /* Input is not 4-byte aligned */
+ nrg = SKP_SMULBB( x[ 0 ], x[ 0 ] );
+ i = 1;
+ } else {
+ nrg = 0;
+ i = 0;
+ }
+ shft = 0;
+ len--;
+ for( ; i < len; i += 2 ) {
+ /* Load two values at once */
+ in32 = *( (SKP_int32 *)&x[ i ] );
+ nrg = SKP_SMLABB_ovflw( nrg, in32, in32 );
+ nrg = SKP_SMLATT_ovflw( nrg, in32, in32 );
+ if( nrg < 0 ) {
+ /* Scale down */
+ nrg = (SKP_int32)SKP_RSHIFT_uint( (SKP_uint32)nrg, 2 );
+ shft = 2;
+ break;
+ }
+ }
+ for( ; i < len; i += 2 ) {
+ /* Load two values at once */
+ in32 = *( (SKP_int32 *)&x[ i ] );
+ nrg_tmp = SKP_SMULBB( in32, in32 );
+ nrg_tmp = SKP_SMLATT_ovflw( nrg_tmp, in32, in32 );
+ nrg = (SKP_int32)SKP_ADD_RSHIFT_uint( nrg, (SKP_uint32)nrg_tmp, shft );
+ if( nrg < 0 ) {
+ /* Scale down */
+ nrg = (SKP_int32)SKP_RSHIFT_uint( (SKP_uint32)nrg, 2 );
+ shft += 2;
+ }
+ }
+ if( i == len ) {
+ /* One sample left to process */
+ nrg_tmp = SKP_SMULBB( x[ i ], x[ i ] );
+ nrg = (SKP_int32)SKP_ADD_RSHIFT_uint( nrg, nrg_tmp, shft );
+ }
+
+ /* Make sure to have at least one extra leading zero (two leading zeros in total) */
+ if( nrg & 0xC0000000 ) {
+ nrg = SKP_RSHIFT_uint( (SKP_uint32)nrg, 2 );
+ shft += 2;
+ }
+
+ /* Output arguments */
+ *shift = shft;
+ *energy = nrg;
+}
--- /dev/null
+++ b/src/SKP_Silk_tables.h
@@ -1,0 +1,171 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#ifndef SKP_SILK_TABLES_H
+#define SKP_SILK_TABLES_H
+
+#include "SKP_Silk_define.h"
+#include "SKP_Silk_structs.h"
+
+#define PITCH_EST_MAX_LAG_MS 18 /* 18 ms -> 56 Hz */
+#define PITCH_EST_MIN_LAG_MS 2 /* 2 ms -> 500 Hz */
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+/* entropy coding tables */
+extern const SKP_uint16 SKP_Silk_type_offset_CDF[ 5 ]; /* 5 */
+extern const SKP_uint16 SKP_Silk_type_offset_joint_CDF[ 4 ][ 5 ]; /* 20 */
+extern const SKP_int SKP_Silk_type_offset_CDF_offset;
+
+extern const SKP_uint16 SKP_Silk_gain_CDF[ 2 ][ N_LEVELS_QGAIN + 1 ]; /* 130 */
+extern const SKP_int SKP_Silk_gain_CDF_offset;
+extern const SKP_uint16 SKP_Silk_delta_gain_CDF[ MAX_DELTA_GAIN_QUANT - MIN_DELTA_GAIN_QUANT + 2 ]; /* 46 */
+extern const SKP_int SKP_Silk_delta_gain_CDF_offset;
+
+extern const SKP_uint16 SKP_Silk_pitch_lag_NB_CDF[ 8 * ( PITCH_EST_MAX_LAG_MS - PITCH_EST_MIN_LAG_MS ) + 2 ]; /* 130 */
+extern const SKP_int SKP_Silk_pitch_lag_NB_CDF_offset;
+extern const SKP_uint16 SKP_Silk_pitch_lag_MB_CDF[ 12 * ( PITCH_EST_MAX_LAG_MS - PITCH_EST_MIN_LAG_MS ) + 2 ]; /* 194 */
+extern const SKP_int SKP_Silk_pitch_lag_MB_CDF_offset;
+extern const SKP_uint16 SKP_Silk_pitch_lag_WB_CDF[ 16 * ( PITCH_EST_MAX_LAG_MS - PITCH_EST_MIN_LAG_MS ) + 2 ]; /* 258 */
+extern const SKP_int SKP_Silk_pitch_lag_WB_CDF_offset;
+extern const SKP_uint16 SKP_Silk_pitch_lag_SWB_CDF[ 24 * ( PITCH_EST_MAX_LAG_MS - PITCH_EST_MIN_LAG_MS ) + 2 ]; /* 386 */
+extern const SKP_int SKP_Silk_pitch_lag_SWB_CDF_offset;
+
+extern const SKP_uint16 SKP_Silk_pitch_contour_CDF[ 35 ]; /* 35 */
+extern const SKP_int SKP_Silk_pitch_contour_CDF_offset;
+extern const SKP_uint16 SKP_Silk_pitch_contour_NB_CDF[ 12 ]; /* 12 */
+extern const SKP_int SKP_Silk_pitch_contour_NB_CDF_offset;
+extern const SKP_uint16 SKP_Silk_pitch_delta_CDF[23]; /* 23 */
+extern const SKP_int SKP_Silk_pitch_delta_CDF_offset;
+
+extern const SKP_uint16 SKP_Silk_pulses_per_block_CDF[ N_RATE_LEVELS ][ MAX_PULSES + 3 ]; /* 210 */
+extern const SKP_int SKP_Silk_pulses_per_block_CDF_offset;
+extern const SKP_int16 SKP_Silk_pulses_per_block_BITS_Q6[ N_RATE_LEVELS - 1 ][ MAX_PULSES + 2 ]; /* 180 */
+
+extern const SKP_uint16 SKP_Silk_rate_levels_CDF[ 2 ][ N_RATE_LEVELS ]; /* 20 */
+extern const SKP_int SKP_Silk_rate_levels_CDF_offset;
+extern const SKP_int16 SKP_Silk_rate_levels_BITS_Q6[ 2 ][ N_RATE_LEVELS - 1 ]; /* 18 */
+
+extern const SKP_int SKP_Silk_max_pulses_table[ 4 ]; /* 4 */
+
+extern const SKP_uint16 SKP_Silk_shell_code_table0[ 33 ]; /* 33 */
+extern const SKP_uint16 SKP_Silk_shell_code_table1[ 52 ]; /* 52 */
+extern const SKP_uint16 SKP_Silk_shell_code_table2[ 102 ]; /* 102 */
+extern const SKP_uint16 SKP_Silk_shell_code_table3[ 207 ]; /* 207 */
+extern const SKP_uint16 SKP_Silk_shell_code_table_offsets[ 19 ]; /* 19 */
+
+extern const SKP_uint16 SKP_Silk_lsb_CDF[ 3 ]; /* 3 */
+
+extern const SKP_uint16 SKP_Silk_sign_CDF[ 36 ][ 3 ]; /* 108 */
+
+extern const SKP_uint16 SKP_Silk_LTP_per_index_CDF[ 4 ]; /* 4 */
+extern const SKP_int SKP_Silk_LTP_per_index_CDF_offset;
+extern const SKP_int16 * const SKP_Silk_LTP_gain_BITS_Q6_ptrs[ NB_LTP_CBKS ]; /* 3 */
+extern const SKP_uint16 * const SKP_Silk_LTP_gain_CDF_ptrs[ NB_LTP_CBKS ]; /* 3 */
+extern const SKP_int SKP_Silk_LTP_gain_CDF_offsets[ NB_LTP_CBKS ]; /* 3 */
+extern const SKP_int32 SKP_Silk_LTP_gain_middle_avg_RD_Q14;
+extern const SKP_uint16 SKP_Silk_LTPscale_CDF[ 4 ]; /* 4 */
+extern const SKP_int SKP_Silk_LTPscale_offset;
+
+/* Tables for LTPScale */
+extern const SKP_int16 SKP_Silk_LTPScales_table_Q14[ 3 ];
+
+extern const SKP_uint16 SKP_Silk_vadflag_CDF[ 3 ]; /* 3 */
+extern const SKP_int SKP_Silk_vadflag_offset;
+
+extern const SKP_int SKP_Silk_SamplingRates_table[ 4 ]; /* 4 */
+extern const SKP_uint16 SKP_Silk_SamplingRates_CDF[ 5 ]; /* 5 */
+extern const SKP_int SKP_Silk_SamplingRates_offset;
+
+extern const SKP_uint16 SKP_Silk_NLSF_interpolation_factor_CDF[ 6 ];
+extern const SKP_int SKP_Silk_NLSF_interpolation_factor_offset;
+
+/* NLSF codebooks */
+extern const SKP_Silk_NLSF_CB_struct SKP_Silk_NLSF_CB0_16, SKP_Silk_NLSF_CB1_16;
+extern const SKP_Silk_NLSF_CB_struct SKP_Silk_NLSF_CB0_10, SKP_Silk_NLSF_CB1_10;
+
+/* quantization tables */
+extern const SKP_int16 * const SKP_Silk_LTP_vq_ptrs_Q14[ NB_LTP_CBKS ]; /* 168 */
+extern const SKP_int SKP_Silk_LTP_vq_sizes[ NB_LTP_CBKS ]; /* 3 */
+
+/* Piece-wise linear mapping from bitrate in kbps to coding quality in dB SNR */
+extern const SKP_int32 TargetRate_table_NB[ TARGET_RATE_TAB_SZ ];
+extern const SKP_int32 TargetRate_table_MB[ TARGET_RATE_TAB_SZ ];
+extern const SKP_int32 TargetRate_table_WB[ TARGET_RATE_TAB_SZ ];
+extern const SKP_int32 TargetRate_table_SWB[ TARGET_RATE_TAB_SZ ];
+extern const SKP_int32 SNR_table_Q1[ TARGET_RATE_TAB_SZ ];
+
+extern const SKP_int32 SNR_table_one_bit_per_sample_Q7[ 4 ];
+
+/* Filter coeficicnts for HP filter: 4. Order filter implementad as two biquad filters */
+extern const SKP_int16 SKP_Silk_SWB_detect_B_HP_Q13[ NB_SOS ][ 3 ];
+extern const SKP_int16 SKP_Silk_SWB_detect_A_HP_Q13[ NB_SOS ][ 2 ];
+
+/* Decoder high-pass filter coefficients for 24 kHz sampling */
+extern const SKP_int16 SKP_Silk_Dec_A_HP_24[ DEC_HP_ORDER ]; /* 2 */
+extern const SKP_int16 SKP_Silk_Dec_B_HP_24[ DEC_HP_ORDER + 1 ]; /* 3 */
+
+/* Decoder high-pass filter coefficients for 16 kHz sampling */
+extern const SKP_int16 SKP_Silk_Dec_A_HP_16[ DEC_HP_ORDER ]; /* 2 */
+extern const SKP_int16 SKP_Silk_Dec_B_HP_16[ DEC_HP_ORDER + 1 ]; /* 3 */
+
+/* Decoder high-pass filter coefficients for 12 kHz sampling */
+extern const SKP_int16 SKP_Silk_Dec_A_HP_12[ DEC_HP_ORDER ]; /* 2 */
+extern const SKP_int16 SKP_Silk_Dec_B_HP_12[ DEC_HP_ORDER + 1 ]; /* 3 */
+
+/* Decoder high-pass filter coefficients for 8 kHz sampling */
+extern const SKP_int16 SKP_Silk_Dec_A_HP_8[ DEC_HP_ORDER ]; /* 2 */
+extern const SKP_int16 SKP_Silk_Dec_B_HP_8[ DEC_HP_ORDER + 1 ]; /* 3 */
+
+/* Table for frame termination indication */
+extern const SKP_uint16 SKP_Silk_FrameTermination_CDF[ 5 ];
+extern const SKP_int SKP_Silk_FrameTermination_offset;
+
+extern const SKP_uint16 SKP_Silk_FrameTermination_v4_CDF[ 6 ];
+extern const SKP_int SKP_Silk_FrameTermination_v4_offset;
+
+/* Table for random seed */
+extern const SKP_uint16 SKP_Silk_Seed_CDF[ 5 ];
+extern const SKP_int SKP_Silk_Seed_offset;
+
+/* Quantization offsets */
+extern const SKP_int16 SKP_Silk_Quantization_Offsets_Q10[ 2 ][ 2 ];
+
+#if SWITCH_TRANSITION_FILTERING
+/* Interpolation points for filter coefficients used in the bandwidth transition smoother */
+extern const SKP_int32 SKP_Silk_Transition_LP_B_Q28[ TRANSITION_INT_NUM ][ TRANSITION_NB ];
+extern const SKP_int32 SKP_Silk_Transition_LP_A_Q28[ TRANSITION_INT_NUM ][ TRANSITION_NA ];
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
--- /dev/null
+++ b/src/SKP_Silk_tables_LTP.c
@@ -1,0 +1,324 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_tables.h"
+
+const SKP_uint16 SKP_Silk_LTP_per_index_CDF[ 4 ] = {
+ 0, 20992, 40788, 65535
+};
+
+const SKP_int SKP_Silk_LTP_per_index_CDF_offset = 1;
+
+
+const SKP_uint16 SKP_Silk_LTP_gain_CDF_0[ 11 ] = {
+ 0, 49380, 54463, 56494, 58437, 60101, 61683, 62985,
+ 64066, 64823, 65535
+};
+
+const SKP_uint16 SKP_Silk_LTP_gain_CDF_1[ 21 ] = {
+ 0, 25290, 30654, 35710, 40386, 42937, 45250, 47459,
+ 49411, 51348, 52974, 54517, 55976, 57423, 58865, 60285,
+ 61667, 62895, 63827, 64724, 65535
+};
+
+const SKP_uint16 SKP_Silk_LTP_gain_CDF_2[ 41 ] = {
+ 0, 4958, 9439, 13581, 17638, 21651, 25015, 28025,
+ 30287, 32406, 34330, 36240, 38130, 39790, 41281, 42764,
+ 44229, 45676, 47081, 48431, 49675, 50849, 51932, 52966,
+ 53957, 54936, 55869, 56789, 57708, 58504, 59285, 60043,
+ 60796, 61542, 62218, 62871, 63483, 64076, 64583, 65062,
+ 65535
+};
+
+const SKP_int SKP_Silk_LTP_gain_CDF_offsets[ 3 ] = {
+ 1, 3, 10
+};
+
+const SKP_int32 SKP_Silk_LTP_gain_middle_avg_RD_Q14 = 11010;
+
+const SKP_int16 SKP_Silk_LTP_gain_BITS_Q6_0[ 10 ] = {
+ 26, 236, 321, 325, 339, 344, 362, 379,
+ 412, 418
+};
+
+const SKP_int16 SKP_Silk_LTP_gain_BITS_Q6_1[ 20 ] = {
+ 88, 231, 237, 244, 300, 309, 313, 324,
+ 325, 341, 346, 351, 352, 352, 354, 356,
+ 367, 393, 396, 406
+};
+
+const SKP_int16 SKP_Silk_LTP_gain_BITS_Q6_2[ 40 ] = {
+ 238, 248, 255, 257, 258, 274, 284, 311,
+ 317, 326, 326, 327, 339, 349, 350, 351,
+ 352, 355, 358, 366, 371, 379, 383, 387,
+ 388, 393, 394, 394, 407, 409, 412, 412,
+ 413, 422, 426, 432, 434, 449, 454, 455
+};
+
+const SKP_uint16 * const SKP_Silk_LTP_gain_CDF_ptrs[ NB_LTP_CBKS ] = {
+ SKP_Silk_LTP_gain_CDF_0,
+ SKP_Silk_LTP_gain_CDF_1,
+ SKP_Silk_LTP_gain_CDF_2
+};
+
+const SKP_int16 * const SKP_Silk_LTP_gain_BITS_Q6_ptrs[ NB_LTP_CBKS ] = {
+ SKP_Silk_LTP_gain_BITS_Q6_0,
+ SKP_Silk_LTP_gain_BITS_Q6_1,
+ SKP_Silk_LTP_gain_BITS_Q6_2
+};
+
+const SKP_int16 SKP_Silk_LTP_gain_vq_0_Q14[ 10 ][ 5 ] =
+{
+{
+ 594, 984, 2840, 1021, 669
+},
+{
+ 10, 35, 304, -1, 23
+},
+{
+ -694, 1923, 4603, 2975, 2335
+},
+{
+ 2437, 3176, 3778, 1940, 481
+},
+{
+ 214, -46, 7870, 4406, -521
+},
+{
+ -896, 4818, 8501, 1623, -887
+},
+{
+ -696, 3178, 6480, -302, 1081
+},
+{
+ 517, 599, 1002, 567, 560
+},
+{
+ -2075, -834, 4712, -340, 896
+},
+{
+ 1435, -644, 3993, -612, -2063
+}
+};
+
+const SKP_int16 SKP_Silk_LTP_gain_vq_1_Q14[ 20 ][ 5 ] =
+{
+{
+ 1655, 2918, 5001, 3010, 1775
+},
+{
+ 113, 198, 856, 176, 178
+},
+{
+ -843, 2479, 7858, 5371, 574
+},
+{
+ 59, 5356, 7648, 2850, -315
+},
+{
+ 3840, 4851, 6527, 1583, -1233
+},
+{
+ 1620, 1760, 2330, 1876, 2045
+},
+{
+ -545, 1854, 11792, 1547, -307
+},
+{
+ -604, 689, 5369, 5074, 4265
+},
+{
+ 521, -1331, 9829, 6209, -1211
+},
+{
+ -1315, 6747, 9929, -1410, 546
+},
+{
+ 117, -144, 2810, 1649, 5240
+},
+{
+ 5392, 3476, 2425, -38, 633
+},
+{
+ 14, -449, 5274, 3547, -171
+},
+{
+ -98, 395, 9114, 1676, 844
+},
+{
+ -908, 3843, 8861, -957, 1474
+},
+{
+ 396, 6747, 5379, -329, 1269
+},
+{
+ -335, 2830, 4281, 270, -54
+},
+{
+ 1502, 5609, 8958, 6045, 2059
+},
+{
+ -370, 479, 5267, 5726, 1174
+},
+{
+ 5237, -1144, 6510, 455, 512
+}
+};
+
+const SKP_int16 SKP_Silk_LTP_gain_vq_2_Q14[ 40 ][ 5 ] =
+{
+{
+ -278, 415, 9345, 7106, -431
+},
+{
+ -1006, 3863, 9524, 4724, -871
+},
+{
+ -954, 4624, 11722, 973, -300
+},
+{
+ -117, 7066, 8331, 1959, -901
+},
+{
+ 593, 3412, 6070, 4914, 1567
+},
+{
+ 54, -51, 12618, 4228, -844
+},
+{
+ 3157, 4822, 5229, 2313, 717
+},
+{
+ -244, 1161, 14198, 779, 69
+},
+{
+ -1218, 5603, 12894, -2301, 1001
+},
+{
+ -132, 3960, 9526, 577, 1806
+},
+{
+ -1633, 8815, 10484, -2452, 895
+},
+{
+ 235, 450, 1243, 667, 437
+},
+{
+ 959, -2630, 10897, 8772, -1852
+},
+{
+ 2420, 2046, 8893, 4427, -1569
+},
+{
+ 23, 7091, 8356, -1285, 1508
+},
+{
+ -1133, 835, 7662, 6043, 2800
+},
+{
+ 439, 391, 11016, 2253, 1362
+},
+{
+ -1020, 2876, 13436, 4015, -3020
+},
+{
+ 1060, -2690, 13512, 5565, -1394
+},
+{
+ -1420, 8007, 11421, -152, -1672
+},
+{
+ -893, 2895, 15434, -1490, 159
+},
+{
+ -1054, 428, 12208, 8538, -3344
+},
+{
+ 1772, -1304, 7593, 6185, 561
+},
+{
+ 525, -1207, 6659, 11151, -1170
+},
+{
+ 439, 2667, 4743, 2359, 5515
+},
+{
+ 2951, 7432, 7909, -230, -1564
+},
+{
+ -72, 2140, 5477, 1391, 1580
+},
+{
+ 476, -1312, 15912, 2174, -1027
+},
+{
+ 5737, 441, 2493, 2043, 2757
+},
+{
+ 228, -43, 1803, 6663, 7064
+},
+{
+ 4596, 9182, 1917, -200, 203
+},
+{
+ -704, 12039, 5451, -1188, 542
+},
+{
+ 1782, -1040, 10078, 7513, -2767
+},
+{
+ -2626, 7747, 9019, 62, 1710
+},
+{
+ 235, -233, 2954, 10921, 1947
+},
+{
+ 10854, 2814, 1232, -111, 222
+},
+{
+ 2267, 2778, 12325, 156, -1658
+},
+{
+ -2950, 8095, 16330, 268, -3626
+},
+{
+ 67, 2083, 7950, -80, -2432
+},
+{
+ 518, -66, 1718, 415, 11435
+}
+};
+
+const SKP_int16 * const SKP_Silk_LTP_vq_ptrs_Q14[ NB_LTP_CBKS ] = {
+ &SKP_Silk_LTP_gain_vq_0_Q14[ 0 ][ 0 ],
+ &SKP_Silk_LTP_gain_vq_1_Q14[ 0 ][ 0 ],
+ &SKP_Silk_LTP_gain_vq_2_Q14[ 0 ][ 0 ]
+};
+
+const SKP_int SKP_Silk_LTP_vq_sizes[ NB_LTP_CBKS ] = {
+ 10, 20, 40
+};
--- /dev/null
+++ b/src/SKP_Silk_tables_NLSF_CB0_10.c
@@ -1,0 +1,889 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+/**********************************************/
+/* This file has been automatically generated */
+/* */
+/* ROM usage: 138+1331 Words */
+/**********************************************/
+
+#include "SKP_Silk_structs.h"
+#include "SKP_Silk_tables_NLSF_CB0_10.h"
+
+const SKP_uint16 SKP_Silk_NLSF_MSVQ_CB0_10_CDF[ NLSF_MSVQ_CB0_10_VECTORS + NLSF_MSVQ_CB0_10_STAGES ] =
+{
+ 0,
+ 2658,
+ 4420,
+ 6107,
+ 7757,
+ 9408,
+ 10955,
+ 12502,
+ 13983,
+ 15432,
+ 16882,
+ 18331,
+ 19750,
+ 21108,
+ 22409,
+ 23709,
+ 25010,
+ 26256,
+ 27501,
+ 28747,
+ 29965,
+ 31158,
+ 32351,
+ 33544,
+ 34736,
+ 35904,
+ 36997,
+ 38091,
+ 39185,
+ 40232,
+ 41280,
+ 42327,
+ 43308,
+ 44290,
+ 45271,
+ 46232,
+ 47192,
+ 48132,
+ 49032,
+ 49913,
+ 50775,
+ 51618,
+ 52462,
+ 53287,
+ 54095,
+ 54885,
+ 55675,
+ 56449,
+ 57222,
+ 57979,
+ 58688,
+ 59382,
+ 60076,
+ 60726,
+ 61363,
+ 61946,
+ 62505,
+ 63052,
+ 63543,
+ 63983,
+ 64396,
+ 64766,
+ 65023,
+ 65279,
+ 65535,
+ 0,
+ 4977,
+ 9542,
+ 14106,
+ 18671,
+ 23041,
+ 27319,
+ 31596,
+ 35873,
+ 39969,
+ 43891,
+ 47813,
+ 51652,
+ 55490,
+ 59009,
+ 62307,
+ 65535,
+ 0,
+ 8571,
+ 17142,
+ 25529,
+ 33917,
+ 42124,
+ 49984,
+ 57844,
+ 65535,
+ 0,
+ 8732,
+ 17463,
+ 25825,
+ 34007,
+ 42189,
+ 50196,
+ 58032,
+ 65535,
+ 0,
+ 8948,
+ 17704,
+ 25733,
+ 33762,
+ 41791,
+ 49821,
+ 57678,
+ 65535,
+ 0,
+ 4374,
+ 8655,
+ 12936,
+ 17125,
+ 21313,
+ 25413,
+ 29512,
+ 33611,
+ 37710,
+ 41809,
+ 45820,
+ 49832,
+ 53843,
+ 57768,
+ 61694,
+ 65535
+};
+
+const SKP_uint16 * const SKP_Silk_NLSF_MSVQ_CB0_10_CDF_start_ptr[ NLSF_MSVQ_CB0_10_STAGES ] =
+{
+ &SKP_Silk_NLSF_MSVQ_CB0_10_CDF[ 0 ],
+ &SKP_Silk_NLSF_MSVQ_CB0_10_CDF[ 65 ],
+ &SKP_Silk_NLSF_MSVQ_CB0_10_CDF[ 82 ],
+ &SKP_Silk_NLSF_MSVQ_CB0_10_CDF[ 91 ],
+ &SKP_Silk_NLSF_MSVQ_CB0_10_CDF[ 100 ],
+ &SKP_Silk_NLSF_MSVQ_CB0_10_CDF[ 109 ]
+};
+
+const SKP_int SKP_Silk_NLSF_MSVQ_CB0_10_CDF_middle_idx[ NLSF_MSVQ_CB0_10_STAGES ] =
+{
+ 23,
+ 8,
+ 5,
+ 5,
+ 5,
+ 9
+};
+
+const SKP_int16 SKP_Silk_NLSF_MSVQ_CB0_10_rates_Q5[ NLSF_MSVQ_CB0_10_VECTORS ] =
+{
+ 148, 167,
+ 169, 170,
+ 170, 173,
+ 173, 175,
+ 176, 176,
+ 176, 177,
+ 179, 181,
+ 181, 181,
+ 183, 183,
+ 183, 184,
+ 185, 185,
+ 185, 185,
+ 186, 189,
+ 189, 189,
+ 191, 191,
+ 191, 194,
+ 194, 194,
+ 195, 195,
+ 196, 198,
+ 199, 200,
+ 201, 201,
+ 202, 203,
+ 204, 204,
+ 205, 205,
+ 206, 209,
+ 210, 210,
+ 213, 214,
+ 218, 220,
+ 221, 226,
+ 231, 234,
+ 239, 256,
+ 256, 256,
+ 119, 123,
+ 123, 123,
+ 125, 126,
+ 126, 126,
+ 128, 130,
+ 130, 131,
+ 131, 135,
+ 138, 139,
+ 94, 94,
+ 95, 95,
+ 96, 98,
+ 98, 99,
+ 93, 93,
+ 95, 96,
+ 96, 97,
+ 98, 100,
+ 92, 93,
+ 97, 97,
+ 97, 97,
+ 98, 98,
+ 125, 126,
+ 126, 127,
+ 127, 128,
+ 128, 128,
+ 128, 128,
+ 129, 129,
+ 129, 130,
+ 130, 131
+};
+
+const SKP_int SKP_Silk_NLSF_MSVQ_CB0_10_ndelta_min_Q15[ 10 + 1 ] =
+{
+ 563,
+ 3,
+ 22,
+ 20,
+ 3,
+ 3,
+ 132,
+ 119,
+ 358,
+ 86,
+ 964
+};
+
+const SKP_int16 SKP_Silk_NLSF_MSVQ_CB0_10_Q15[ 10 * NLSF_MSVQ_CB0_10_VECTORS ] =
+{
+ 2210, 4023,
+ 6981, 9260,
+ 12573, 15687,
+ 19207, 22383,
+ 25981, 29142,
+ 3285, 4172,
+ 6116, 10856,
+ 15289, 16826,
+ 19701, 22010,
+ 24721, 29313,
+ 1554, 2511,
+ 6577, 10337,
+ 13837, 16511,
+ 20086, 23214,
+ 26480, 29464,
+ 3062, 4017,
+ 5771, 10037,
+ 13365, 14952,
+ 20140, 22891,
+ 25229, 29603,
+ 2085, 3457,
+ 5934, 8718,
+ 11501, 13670,
+ 17997, 21817,
+ 24935, 28745,
+ 2776, 4093,
+ 6421, 10413,
+ 15111, 16806,
+ 20825, 23826,
+ 26308, 29411,
+ 2717, 4034,
+ 5697, 8463,
+ 14301, 16354,
+ 19007, 23413,
+ 25812, 28506,
+ 2872, 3702,
+ 5881, 11034,
+ 17141, 18879,
+ 21146, 23451,
+ 25817, 29600,
+ 2999, 4015,
+ 7357, 11219,
+ 12866, 17307,
+ 20081, 22644,
+ 26774, 29107,
+ 2942, 3866,
+ 5918, 11915,
+ 13909, 16072,
+ 20453, 22279,
+ 27310, 29826,
+ 2271, 3527,
+ 6606, 9729,
+ 12943, 17382,
+ 20224, 22345,
+ 24602, 28290,
+ 2207, 3310,
+ 5844, 9339,
+ 11141, 15651,
+ 18576, 21177,
+ 25551, 28228,
+ 3963, 4975,
+ 6901, 11588,
+ 13466, 15577,
+ 19231, 21368,
+ 25510, 27759,
+ 2749, 3549,
+ 6966, 13808,
+ 15653, 17645,
+ 20090, 22599,
+ 26467, 28537,
+ 2126, 3504,
+ 5109, 9954,
+ 12550, 14620,
+ 19703, 21687,
+ 26457, 29106,
+ 3966, 5745,
+ 7442, 9757,
+ 14468, 16404,
+ 19135, 23048,
+ 25375, 28391,
+ 3197, 4751,
+ 6451, 9298,
+ 13038, 14874,
+ 17962, 20627,
+ 23835, 28464,
+ 3195, 4081,
+ 6499, 12252,
+ 14289, 16040,
+ 18357, 20730,
+ 26980, 29309,
+ 1533, 2471,
+ 4486, 7796,
+ 12332, 15758,
+ 19567, 22298,
+ 25673, 29051,
+ 2002, 2971,
+ 4985, 8083,
+ 13181, 15435,
+ 18237, 21517,
+ 24595, 28351,
+ 3808, 4925,
+ 6710, 10201,
+ 12011, 14300,
+ 18457, 20391,
+ 26525, 28956,
+ 2281, 3418,
+ 4979, 8726,
+ 15964, 18104,
+ 20250, 22771,
+ 25286, 28954,
+ 3051, 5479,
+ 7290, 9848,
+ 12744, 14503,
+ 18665, 23684,
+ 26065, 28947,
+ 2364, 3565,
+ 5502, 9621,
+ 14922, 16621,
+ 19005, 20996,
+ 26310, 29302,
+ 4093, 5212,
+ 6833, 9880,
+ 16303, 18286,
+ 20571, 23614,
+ 26067, 29128,
+ 2941, 3996,
+ 6038, 10638,
+ 12668, 14451,
+ 16798, 19392,
+ 26051, 28517,
+ 3863, 5212,
+ 7019, 9468,
+ 11039, 13214,
+ 19942, 22344,
+ 25126, 29539,
+ 4615, 6172,
+ 7853, 10252,
+ 12611, 14445,
+ 19719, 22441,
+ 24922, 29341,
+ 3566, 4512,
+ 6985, 8684,
+ 10544, 16097,
+ 18058, 22475,
+ 26066, 28167,
+ 4481, 5489,
+ 7432, 11414,
+ 13191, 15225,
+ 20161, 22258,
+ 26484, 29716,
+ 3320, 4320,
+ 6621, 9867,
+ 11581, 14034,
+ 21168, 23210,
+ 26588, 29903,
+ 3794, 4689,
+ 6916, 8655,
+ 10143, 16144,
+ 19568, 21588,
+ 27557, 29593,
+ 2446, 3276,
+ 5918, 12643,
+ 16601, 18013,
+ 21126, 23175,
+ 27300, 29634,
+ 2450, 3522,
+ 5437, 8560,
+ 15285, 19911,
+ 21826, 24097,
+ 26567, 29078,
+ 2580, 3796,
+ 5580, 8338,
+ 9969, 12675,
+ 18907, 22753,
+ 25450, 29292,
+ 3325, 4312,
+ 6241, 7709,
+ 9164, 14452,
+ 21665, 23797,
+ 27096, 29857,
+ 3338, 4163,
+ 7738, 11114,
+ 12668, 14753,
+ 16931, 22736,
+ 25671, 28093,
+ 3840, 4755,
+ 7755, 13471,
+ 15338, 17180,
+ 20077, 22353,
+ 27181, 29743,
+ 2504, 4079,
+ 8351, 12118,
+ 15046, 18595,
+ 21684, 24704,
+ 27519, 29937,
+ 5234, 6342,
+ 8267, 11821,
+ 15155, 16760,
+ 20667, 23488,
+ 25949, 29307,
+ 2681, 3562,
+ 6028, 10827,
+ 18458, 20458,
+ 22303, 24701,
+ 26912, 29956,
+ 3374, 4528,
+ 6230, 8256,
+ 9513, 12730,
+ 18666, 20720,
+ 26007, 28425,
+ 2731, 3629,
+ 8320, 12450,
+ 14112, 16431,
+ 18548, 22098,
+ 25329, 27718,
+ 3481, 4401,
+ 7321, 9319,
+ 11062, 13093,
+ 15121, 22315,
+ 26331, 28740,
+ 3577, 4945,
+ 6669, 8792,
+ 10299, 12645,
+ 19505, 24766,
+ 26996, 29634,
+ 4058, 5060,
+ 7288, 10190,
+ 11724, 13936,
+ 15849, 18539,
+ 26701, 29845,
+ 4262, 5390,
+ 7057, 8982,
+ 10187, 15264,
+ 20480, 22340,
+ 25958, 28072,
+ 3404, 4329,
+ 6629, 7946,
+ 10121, 17165,
+ 19640, 22244,
+ 25062, 27472,
+ 3157, 4168,
+ 6195, 9319,
+ 10771, 13325,
+ 15416, 19816,
+ 24672, 27634,
+ 2503, 3473,
+ 5130, 6767,
+ 8571, 14902,
+ 19033, 21926,
+ 26065, 28728,
+ 4133, 5102,
+ 7553, 10054,
+ 11757, 14924,
+ 17435, 20186,
+ 23987, 26272,
+ 4972, 6139,
+ 7894, 9633,
+ 11320, 14295,
+ 21737, 24306,
+ 26919, 29907,
+ 2958, 3816,
+ 6851, 9204,
+ 10895, 18052,
+ 20791, 23338,
+ 27556, 29609,
+ 5234, 6028,
+ 8034, 10154,
+ 11242, 14789,
+ 18948, 20966,
+ 26585, 29127,
+ 5241, 6838,
+ 10526, 12819,
+ 14681, 17328,
+ 19928, 22336,
+ 26193, 28697,
+ 3412, 4251,
+ 5988, 7094,
+ 9907, 18243,
+ 21669, 23777,
+ 26969, 29087,
+ 2470, 3217,
+ 7797, 15296,
+ 17365, 19135,
+ 21979, 24256,
+ 27322, 29442,
+ 4939, 5804,
+ 8145, 11809,
+ 13873, 15598,
+ 17234, 19423,
+ 26476, 29645,
+ 5051, 6167,
+ 8223, 9655,
+ 12159, 17995,
+ 20464, 22832,
+ 26616, 28462,
+ 4987, 5907,
+ 9319, 11245,
+ 13132, 15024,
+ 17485, 22687,
+ 26011, 28273,
+ 5137, 6884,
+ 11025, 14950,
+ 17191, 19425,
+ 21807, 24393,
+ 26938, 29288,
+ 7057, 7884,
+ 9528, 10483,
+ 10960, 14811,
+ 19070, 21675,
+ 25645, 28019,
+ 6759, 7160,
+ 8546, 11779,
+ 12295, 13023,
+ 16627, 21099,
+ 24697, 28287,
+ 3863, 9762,
+ 11068, 11445,
+ 12049, 13960,
+ 18085, 21507,
+ 25224, 28997,
+ 397, 335,
+ 651, 1168,
+ 640, 765,
+ 465, 331,
+ 214, -194,
+ -578, -647,
+ -657, 750,
+ 564, 613,
+ 549, 630,
+ 304, -52,
+ 828, 922,
+ 443, 111,
+ 138, 124,
+ 169, 14,
+ 144, 83,
+ 132, 58,
+ -413, -752,
+ 869, 336,
+ 385, 69,
+ 56, 830,
+ -227, -266,
+ -368, -440,
+ -1195, 163,
+ 126, -228,
+ 802, 156,
+ 188, 120,
+ 376, 59,
+ -358, -558,
+ -1326, -254,
+ -202, -789,
+ 296, 92,
+ -70, -129,
+ -718, -1135,
+ 292, -29,
+ -631, 487,
+ -157, -153,
+ -279, 2,
+ -419, -342,
+ -34, -514,
+ -799, -1571,
+ -687, -609,
+ -546, -130,
+ -215, -252,
+ -446, -574,
+ -1337, 207,
+ -72, 32,
+ 103, -642,
+ 942, 733,
+ 187, 29,
+ -211, -814,
+ 143, 225,
+ 20, 24,
+ -268, -377,
+ 1623, 1133,
+ 667, 164,
+ 307, 366,
+ 187, 34,
+ 62, -313,
+ -832, -1482,
+ -1181, 483,
+ -42, -39,
+ -450, -1406,
+ -587, -52,
+ -760, 334,
+ 98, -60,
+ -500, -488,
+ -1058, 299,
+ 131, -250,
+ -251, -703,
+ 1037, 568,
+ -413, -265,
+ 1687, 573,
+ 345, 323,
+ 98, 61,
+ -102, 31,
+ 135, 149,
+ 617, 365,
+ -39, 34,
+ -611, 1201,
+ 1421, 736,
+ -414, -393,
+ -492, -343,
+ -316, -532,
+ 528, 172,
+ 90, 322,
+ -294, -319,
+ -541, 503,
+ 639, 401,
+ 1, -149,
+ -73, -167,
+ 150, 118,
+ 308, 218,
+ 121, 195,
+ -143, -261,
+ -1013, -802,
+ 387, 436,
+ 130, -427,
+ -448, -681,
+ 123, -87,
+ -251, -113,
+ 274, 310,
+ 445, 501,
+ 354, 272,
+ 141, -285,
+ 569, 656,
+ 37, -49,
+ 251, -386,
+ -263, 1122,
+ 604, 606,
+ 336, 95,
+ 34, 0,
+ 85, 180,
+ 207, -367,
+ -622, 1070,
+ -6, -79,
+ -160, -92,
+ -137, -276,
+ -323, -371,
+ -696, -1036,
+ 407, 102,
+ -86, -214,
+ -482, -647,
+ -28, -291,
+ -97, -180,
+ -250, -435,
+ -18, -76,
+ -332, 410,
+ 407, 168,
+ 539, 411,
+ 254, 111,
+ 58, -145,
+ 200, 30,
+ 187, 116,
+ 131, -367,
+ -475, 781,
+ -559, 561,
+ 195, -115,
+ 8, -168,
+ 30, 55,
+ -122, 131,
+ 82, -5,
+ -273, -50,
+ -632, 668,
+ 4, 32,
+ -26, -279,
+ 315, 165,
+ 197, 377,
+ 155, -41,
+ -138, -324,
+ -109, -617,
+ 360, 98,
+ -53, -319,
+ -114, -245,
+ -82, 507,
+ 468, 263,
+ -137, -389,
+ 652, 354,
+ -18, -227,
+ -462, -135,
+ 317, 53,
+ -16, 66,
+ -72, -126,
+ -356, -347,
+ -328, -72,
+ -337, 324,
+ 152, 349,
+ 169, -196,
+ 179, 254,
+ 260, 325,
+ -74, -80,
+ 75, -31,
+ 270, 275,
+ 87, 278,
+ -446, -301,
+ 309, 71,
+ -25, -242,
+ 516, 161,
+ -162, -83,
+ 329, 230,
+ -311, -259,
+ 177, -26,
+ -462, 89,
+ 257, 6,
+ -130, -93,
+ -456, -317,
+ -221, -206,
+ -417, -182,
+ -74, 234,
+ 48, 261,
+ 359, 231,
+ 258, 85,
+ -282, 252,
+ -147, -222,
+ 251, -207,
+ 443, 123,
+ -417, -36,
+ 273, -241,
+ 240, -112,
+ 44, -167,
+ 126, -124,
+ -77, 58,
+ -401, 333,
+ -118, 82,
+ 126, 151,
+ -433, 359,
+ -130, -102,
+ 131, -244,
+ 86, 85,
+ -462, 414,
+ -240, 16,
+ 145, 28,
+ -205, -481,
+ 373, 293,
+ -72, -174,
+ 62, 259,
+ -8, -18,
+ 362, 233,
+ 185, 43,
+ 278, 27,
+ 193, 570,
+ -248, 189,
+ 92, 31,
+ -275, -3,
+ 243, 176,
+ 438, 209,
+ 206, -51,
+ 79, 109,
+ 168, -185,
+ -308, -68,
+ -618, 385,
+ -310, -108,
+ -164, 165,
+ 61, -152,
+ -101, -412,
+ -268, -257,
+ -40, -20,
+ -28, -158,
+ -301, 271,
+ 380, -338,
+ -367, -132,
+ 64, 114,
+ -131, -225,
+ -156, -260,
+ -63, -116,
+ 155, -586,
+ -202, 254,
+ -287, 178,
+ 227, -106,
+ -294, 164,
+ 298, -100,
+ 185, 317,
+ 193, -45,
+ 28, 80,
+ -87, -433,
+ 22, -48,
+ 48, -237,
+ -229, -139,
+ 120, -364,
+ 268, -136,
+ 396, 125,
+ 130, -89,
+ -272, 118,
+ -256, -68,
+ -451, 488,
+ 143, -165,
+ -48, -190,
+ 106, 219,
+ 47, 435,
+ 245, 97,
+ 75, -418,
+ 121, -187,
+ 570, -200,
+ -351, 225,
+ -21, -217,
+ 234, -111,
+ 194, 14,
+ 242, 118,
+ 140, -397,
+ 355, 361,
+ -45, -195
+};
+
+const SKP_Silk_NLSF_CBS SKP_Silk_NLSF_CB0_10_Stage_info[ NLSF_MSVQ_CB0_10_STAGES ] =
+{
+ { 64, &SKP_Silk_NLSF_MSVQ_CB0_10_Q15[ 10 * 0 ], &SKP_Silk_NLSF_MSVQ_CB0_10_rates_Q5[ 0 ] },
+ { 16, &SKP_Silk_NLSF_MSVQ_CB0_10_Q15[ 10 * 64 ], &SKP_Silk_NLSF_MSVQ_CB0_10_rates_Q5[ 64 ] },
+ { 8, &SKP_Silk_NLSF_MSVQ_CB0_10_Q15[ 10 * 80 ], &SKP_Silk_NLSF_MSVQ_CB0_10_rates_Q5[ 80 ] },
+ { 8, &SKP_Silk_NLSF_MSVQ_CB0_10_Q15[ 10 * 88 ], &SKP_Silk_NLSF_MSVQ_CB0_10_rates_Q5[ 88 ] },
+ { 8, &SKP_Silk_NLSF_MSVQ_CB0_10_Q15[ 10 * 96 ], &SKP_Silk_NLSF_MSVQ_CB0_10_rates_Q5[ 96 ] },
+ { 16, &SKP_Silk_NLSF_MSVQ_CB0_10_Q15[ 10 * 104 ], &SKP_Silk_NLSF_MSVQ_CB0_10_rates_Q5[ 104 ] }
+};
+
+const SKP_Silk_NLSF_CB_struct SKP_Silk_NLSF_CB0_10 =
+{
+ NLSF_MSVQ_CB0_10_STAGES,
+ SKP_Silk_NLSF_CB0_10_Stage_info,
+ SKP_Silk_NLSF_MSVQ_CB0_10_ndelta_min_Q15,
+ SKP_Silk_NLSF_MSVQ_CB0_10_CDF,
+ SKP_Silk_NLSF_MSVQ_CB0_10_CDF_start_ptr,
+ SKP_Silk_NLSF_MSVQ_CB0_10_CDF_middle_idx
+};
+
--- /dev/null
+++ b/src/SKP_Silk_tables_NLSF_CB0_10.h
@@ -1,0 +1,51 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#ifndef SKP_SILK_TABLES_NLSF_CB0_10_H
+#define SKP_SILK_TABLES_NLSF_CB0_10_H
+
+#include "SKP_Silk_define.h"
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#define NLSF_MSVQ_CB0_10_STAGES 6
+#define NLSF_MSVQ_CB0_10_VECTORS 120
+
+/* NLSF codebook entropy coding tables */
+extern const SKP_uint16 SKP_Silk_NLSF_MSVQ_CB0_10_CDF[ NLSF_MSVQ_CB0_10_VECTORS + NLSF_MSVQ_CB0_10_STAGES ];
+extern const SKP_uint16 * const SKP_Silk_NLSF_MSVQ_CB0_10_CDF_start_ptr[ NLSF_MSVQ_CB0_10_STAGES ];
+extern const SKP_int SKP_Silk_NLSF_MSVQ_CB0_10_CDF_middle_idx[ NLSF_MSVQ_CB0_10_STAGES ];
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
--- /dev/null
+++ b/src/SKP_Silk_tables_NLSF_CB0_16.c
@@ -1,0 +1,1319 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+/**********************************************/
+/* This file has been automatically generated */
+/* */
+/* ROM usage: 246+3689 Words */
+/**********************************************/
+
+#include "SKP_Silk_structs.h"
+#include "SKP_Silk_tables_NLSF_CB0_16.h"
+
+const SKP_uint16 SKP_Silk_NLSF_MSVQ_CB0_16_CDF[ NLSF_MSVQ_CB0_16_VECTORS + NLSF_MSVQ_CB0_16_STAGES ] =
+{
+ 0,
+ 1449,
+ 2749,
+ 4022,
+ 5267,
+ 6434,
+ 7600,
+ 8647,
+ 9695,
+ 10742,
+ 11681,
+ 12601,
+ 13444,
+ 14251,
+ 15008,
+ 15764,
+ 16521,
+ 17261,
+ 18002,
+ 18710,
+ 19419,
+ 20128,
+ 20837,
+ 21531,
+ 22225,
+ 22919,
+ 23598,
+ 24277,
+ 24956,
+ 25620,
+ 26256,
+ 26865,
+ 27475,
+ 28071,
+ 28667,
+ 29263,
+ 29859,
+ 30443,
+ 31026,
+ 31597,
+ 32168,
+ 32727,
+ 33273,
+ 33808,
+ 34332,
+ 34855,
+ 35379,
+ 35902,
+ 36415,
+ 36927,
+ 37439,
+ 37941,
+ 38442,
+ 38932,
+ 39423,
+ 39914,
+ 40404,
+ 40884,
+ 41364,
+ 41844,
+ 42324,
+ 42805,
+ 43285,
+ 43754,
+ 44224,
+ 44694,
+ 45164,
+ 45623,
+ 46083,
+ 46543,
+ 46993,
+ 47443,
+ 47892,
+ 48333,
+ 48773,
+ 49213,
+ 49653,
+ 50084,
+ 50515,
+ 50946,
+ 51377,
+ 51798,
+ 52211,
+ 52614,
+ 53018,
+ 53422,
+ 53817,
+ 54212,
+ 54607,
+ 55002,
+ 55388,
+ 55775,
+ 56162,
+ 56548,
+ 56910,
+ 57273,
+ 57635,
+ 57997,
+ 58352,
+ 58698,
+ 59038,
+ 59370,
+ 59702,
+ 60014,
+ 60325,
+ 60630,
+ 60934,
+ 61239,
+ 61537,
+ 61822,
+ 62084,
+ 62346,
+ 62602,
+ 62837,
+ 63072,
+ 63302,
+ 63517,
+ 63732,
+ 63939,
+ 64145,
+ 64342,
+ 64528,
+ 64701,
+ 64867,
+ 65023,
+ 65151,
+ 65279,
+ 65407,
+ 65535,
+ 0,
+ 5099,
+ 9982,
+ 14760,
+ 19538,
+ 24213,
+ 28595,
+ 32976,
+ 36994,
+ 41012,
+ 44944,
+ 48791,
+ 52557,
+ 56009,
+ 59388,
+ 62694,
+ 65535,
+ 0,
+ 9955,
+ 19697,
+ 28825,
+ 36842,
+ 44686,
+ 52198,
+ 58939,
+ 65535,
+ 0,
+ 8949,
+ 17335,
+ 25720,
+ 33926,
+ 41957,
+ 49987,
+ 57845,
+ 65535,
+ 0,
+ 9724,
+ 18642,
+ 26998,
+ 35355,
+ 43532,
+ 51534,
+ 59365,
+ 65535,
+ 0,
+ 8750,
+ 17499,
+ 26249,
+ 34448,
+ 42471,
+ 50494,
+ 58178,
+ 65535,
+ 0,
+ 8730,
+ 17273,
+ 25816,
+ 34176,
+ 42536,
+ 50203,
+ 57869,
+ 65535,
+ 0,
+ 8769,
+ 17538,
+ 26307,
+ 34525,
+ 42742,
+ 50784,
+ 58319,
+ 65535,
+ 0,
+ 8736,
+ 17101,
+ 25466,
+ 33653,
+ 41839,
+ 50025,
+ 57864,
+ 65535,
+ 0,
+ 4368,
+ 8735,
+ 12918,
+ 17100,
+ 21283,
+ 25465,
+ 29558,
+ 33651,
+ 37744,
+ 41836,
+ 45929,
+ 50022,
+ 54027,
+ 57947,
+ 61782,
+ 65535
+};
+
+const SKP_uint16 * const SKP_Silk_NLSF_MSVQ_CB0_16_CDF_start_ptr[ NLSF_MSVQ_CB0_16_STAGES ] =
+{
+ &SKP_Silk_NLSF_MSVQ_CB0_16_CDF[ 0 ],
+ &SKP_Silk_NLSF_MSVQ_CB0_16_CDF[ 129 ],
+ &SKP_Silk_NLSF_MSVQ_CB0_16_CDF[ 146 ],
+ &SKP_Silk_NLSF_MSVQ_CB0_16_CDF[ 155 ],
+ &SKP_Silk_NLSF_MSVQ_CB0_16_CDF[ 164 ],
+ &SKP_Silk_NLSF_MSVQ_CB0_16_CDF[ 173 ],
+ &SKP_Silk_NLSF_MSVQ_CB0_16_CDF[ 182 ],
+ &SKP_Silk_NLSF_MSVQ_CB0_16_CDF[ 191 ],
+ &SKP_Silk_NLSF_MSVQ_CB0_16_CDF[ 200 ],
+ &SKP_Silk_NLSF_MSVQ_CB0_16_CDF[ 209 ]
+};
+
+const SKP_int SKP_Silk_NLSF_MSVQ_CB0_16_CDF_middle_idx[ NLSF_MSVQ_CB0_16_STAGES ] =
+{
+ 42,
+ 8,
+ 4,
+ 5,
+ 5,
+ 5,
+ 5,
+ 5,
+ 5,
+ 9
+};
+
+const SKP_int16 SKP_Silk_NLSF_MSVQ_CB0_16_rates_Q5[ NLSF_MSVQ_CB0_16_VECTORS ] =
+{
+ 176, 181,
+ 182, 183,
+ 186, 186,
+ 191, 191,
+ 191, 196,
+ 197, 201,
+ 203, 206,
+ 206, 206,
+ 207, 207,
+ 209, 209,
+ 209, 209,
+ 210, 210,
+ 210, 211,
+ 211, 211,
+ 212, 214,
+ 216, 216,
+ 217, 217,
+ 217, 217,
+ 218, 218,
+ 219, 219,
+ 220, 221,
+ 222, 223,
+ 223, 223,
+ 223, 224,
+ 224, 224,
+ 225, 225,
+ 226, 226,
+ 226, 226,
+ 227, 227,
+ 227, 227,
+ 227, 227,
+ 228, 228,
+ 228, 228,
+ 229, 229,
+ 229, 230,
+ 230, 230,
+ 231, 231,
+ 231, 231,
+ 232, 232,
+ 232, 232,
+ 233, 234,
+ 235, 235,
+ 235, 236,
+ 236, 236,
+ 236, 237,
+ 237, 237,
+ 237, 240,
+ 240, 240,
+ 240, 241,
+ 242, 243,
+ 244, 244,
+ 247, 247,
+ 248, 248,
+ 248, 249,
+ 251, 255,
+ 255, 256,
+ 260, 260,
+ 261, 264,
+ 264, 266,
+ 266, 268,
+ 271, 274,
+ 276, 279,
+ 288, 288,
+ 288, 288,
+ 118, 120,
+ 121, 121,
+ 122, 125,
+ 125, 129,
+ 129, 130,
+ 131, 132,
+ 136, 137,
+ 138, 145,
+ 87, 88,
+ 91, 97,
+ 98, 100,
+ 105, 106,
+ 92, 95,
+ 95, 96,
+ 97, 97,
+ 98, 99,
+ 88, 92,
+ 95, 95,
+ 96, 97,
+ 98, 109,
+ 93, 93,
+ 93, 96,
+ 97, 97,
+ 99, 101,
+ 93, 94,
+ 94, 95,
+ 95, 99,
+ 99, 99,
+ 93, 93,
+ 93, 96,
+ 96, 97,
+ 100, 102,
+ 93, 95,
+ 95, 96,
+ 96, 96,
+ 98, 99,
+ 125, 125,
+ 127, 127,
+ 127, 127,
+ 128, 128,
+ 128, 128,
+ 128, 128,
+ 129, 130,
+ 131, 132
+};
+
+const SKP_int SKP_Silk_NLSF_MSVQ_CB0_16_ndelta_min_Q15[ 16 + 1 ] =
+{
+ 266,
+ 3,
+ 40,
+ 3,
+ 3,
+ 16,
+ 78,
+ 89,
+ 107,
+ 141,
+ 188,
+ 146,
+ 272,
+ 240,
+ 235,
+ 215,
+ 632
+};
+
+const SKP_int16 SKP_Silk_NLSF_MSVQ_CB0_16_Q15[ 16 * NLSF_MSVQ_CB0_16_VECTORS ] =
+{
+ 1170, 2278, 3658, 5374,
+ 7666, 9113, 11298, 13304,
+ 15371, 17549, 19587, 21487,
+ 23798, 26038, 28318, 30201,
+ 1628, 2334, 4115, 6036,
+ 7818, 9544, 11777, 14021,
+ 15787, 17408, 19466, 21261,
+ 22886, 24565, 26714, 28059,
+ 1724, 2670, 4056, 6532,
+ 8357, 10119, 12093, 14061,
+ 16491, 18795, 20417, 22402,
+ 24251, 26224, 28410, 29956,
+ 1493, 3427, 4789, 6399,
+ 8435, 10168, 12000, 14066,
+ 16229, 18210, 20040, 22098,
+ 24153, 26095, 28183, 30121,
+ 1119, 2089, 4295, 6245,
+ 8691, 10741, 12688, 15057,
+ 17028, 18792, 20717, 22514,
+ 24497, 26548, 28619, 30630,
+ 1363, 2417, 3927, 5556,
+ 7422, 9315, 11879, 13767,
+ 16143, 18520, 20458, 22578,
+ 24539, 26436, 28318, 30318,
+ 1122, 2503, 5216, 7148,
+ 9310, 11078, 13175, 14800,
+ 16864, 18700, 20436, 22488,
+ 24572, 26602, 28555, 30426,
+ 600, 1317, 2970, 5609,
+ 7694, 9784, 12169, 14087,
+ 16379, 18378, 20551, 22686,
+ 24739, 26697, 28646, 30355,
+ 941, 1882, 4274, 5540,
+ 8482, 9858, 11940, 14287,
+ 16091, 18501, 20326, 22612,
+ 24711, 26638, 28814, 30430,
+ 635, 1699, 4376, 5948,
+ 8097, 10115, 12274, 14178,
+ 16111, 17813, 19695, 21773,
+ 23927, 25866, 28022, 30134,
+ 1408, 2222, 3524, 5615,
+ 7345, 8849, 10989, 12772,
+ 15352, 17026, 18919, 21062,
+ 23329, 25215, 27209, 29023,
+ 701, 1307, 3548, 6301,
+ 7744, 9574, 11227, 12978,
+ 15170, 17565, 19775, 22097,
+ 24230, 26335, 28377, 30231,
+ 1752, 2364, 4879, 6569,
+ 7813, 9796, 11199, 14290,
+ 15795, 18000, 20396, 22417,
+ 24308, 26124, 28360, 30633,
+ 901, 1629, 3356, 4635,
+ 7256, 8767, 9971, 11558,
+ 15215, 17544, 19523, 21852,
+ 23900, 25978, 28133, 30184,
+ 981, 1669, 3323, 4693,
+ 6213, 8692, 10614, 12956,
+ 15211, 17711, 19856, 22122,
+ 24344, 26592, 28723, 30481,
+ 1607, 2577, 4220, 5512,
+ 8532, 10388, 11627, 13671,
+ 15752, 17199, 19840, 21859,
+ 23494, 25786, 28091, 30131,
+ 811, 1471, 3144, 5041,
+ 7430, 9389, 11174, 13255,
+ 15157, 16741, 19583, 22167,
+ 24115, 26142, 28383, 30395,
+ 1543, 2144, 3629, 6347,
+ 7333, 9339, 10710, 13596,
+ 15099, 17340, 20102, 21886,
+ 23732, 25637, 27818, 29917,
+ 492, 1185, 2940, 5488,
+ 7095, 8751, 11596, 13579,
+ 16045, 18015, 20178, 22127,
+ 24265, 26406, 28484, 30357,
+ 1547, 2282, 3693, 6341,
+ 7758, 9607, 11848, 13236,
+ 16564, 18069, 19759, 21404,
+ 24110, 26606, 28786, 30655,
+ 685, 1338, 3409, 5262,
+ 6950, 9222, 11414, 14523,
+ 16337, 17893, 19436, 21298,
+ 23293, 25181, 27973, 30520,
+ 887, 1581, 3057, 4318,
+ 7192, 8617, 10047, 13106,
+ 16265, 17893, 20233, 22350,
+ 24379, 26384, 28314, 30189,
+ 2285, 3745, 5662, 7576,
+ 9323, 11320, 13239, 15191,
+ 17175, 19225, 21108, 22972,
+ 24821, 26655, 28561, 30460,
+ 1496, 2108, 3448, 6898,
+ 8328, 9656, 11252, 12823,
+ 14979, 16482, 18180, 20085,
+ 22962, 25160, 27705, 29629,
+ 575, 1261, 3861, 6627,
+ 8294, 10809, 12705, 14768,
+ 17076, 19047, 20978, 23055,
+ 24972, 26703, 28720, 30345,
+ 1682, 2213, 3882, 6238,
+ 7208, 9646, 10877, 13431,
+ 14805, 16213, 17941, 20873,
+ 23550, 25765, 27756, 29461,
+ 888, 1616, 3924, 5195,
+ 7206, 8647, 9842, 11473,
+ 16067, 18221, 20343, 22774,
+ 24503, 26412, 28054, 29731,
+ 805, 1454, 2683, 4472,
+ 7936, 9360, 11398, 14345,
+ 16205, 17832, 19453, 21646,
+ 23899, 25928, 28387, 30463,
+ 1640, 2383, 3484, 5082,
+ 6032, 8606, 11640, 12966,
+ 15842, 17368, 19346, 21182,
+ 23638, 25889, 28368, 30299,
+ 1632, 2204, 4510, 7580,
+ 8718, 10512, 11962, 14096,
+ 15640, 17194, 19143, 22247,
+ 24563, 26561, 28604, 30509,
+ 2043, 2612, 3985, 6851,
+ 8038, 9514, 10979, 12789,
+ 15426, 16728, 18899, 20277,
+ 22902, 26209, 28711, 30618,
+ 2224, 2798, 4465, 5320,
+ 7108, 9436, 10986, 13222,
+ 14599, 18317, 20141, 21843,
+ 23601, 25700, 28184, 30582,
+ 835, 1541, 4083, 5769,
+ 7386, 9399, 10971, 12456,
+ 15021, 18642, 20843, 23100,
+ 25292, 26966, 28952, 30422,
+ 1795, 2343, 4809, 5896,
+ 7178, 8545, 10223, 13370,
+ 14606, 16469, 18273, 20736,
+ 23645, 26257, 28224, 30390,
+ 1734, 2254, 4031, 5188,
+ 6506, 7872, 9651, 13025,
+ 14419, 17305, 19495, 22190,
+ 24403, 26302, 28195, 30177,
+ 1841, 2349, 3968, 4764,
+ 6376, 9825, 11048, 13345,
+ 14682, 16252, 18183, 21363,
+ 23918, 26156, 28031, 29935,
+ 1432, 2047, 5631, 6927,
+ 8198, 9675, 11358, 13506,
+ 14802, 16419, 18339, 22019,
+ 24124, 26177, 28130, 30586,
+ 1730, 2320, 3744, 4808,
+ 6007, 9666, 10997, 13622,
+ 15234, 17495, 20088, 22002,
+ 23603, 25400, 27379, 29254,
+ 1267, 1915, 5483, 6812,
+ 8229, 9919, 11589, 13337,
+ 14747, 17965, 20552, 22167,
+ 24519, 26819, 28883, 30642,
+ 1526, 2229, 4240, 7388,
+ 8953, 10450, 11899, 13718,
+ 16861, 18323, 20379, 22672,
+ 24797, 26906, 28906, 30622,
+ 2175, 2791, 4104, 6875,
+ 8612, 9798, 12152, 13536,
+ 15623, 17682, 19213, 21060,
+ 24382, 26760, 28633, 30248,
+ 454, 1231, 4339, 5738,
+ 7550, 9006, 10320, 13525,
+ 16005, 17849, 20071, 21992,
+ 23949, 26043, 28245, 30175,
+ 2250, 2791, 4230, 5283,
+ 6762, 10607, 11879, 13821,
+ 15797, 17264, 20029, 22266,
+ 24588, 26437, 28244, 30419,
+ 1696, 2216, 4308, 8385,
+ 9766, 11030, 12556, 14099,
+ 16322, 17640, 19166, 20590,
+ 23967, 26858, 28798, 30562,
+ 2452, 3236, 4369, 6118,
+ 7156, 9003, 11509, 12796,
+ 15749, 17291, 19491, 22241,
+ 24530, 26474, 28273, 30073,
+ 1811, 2541, 3555, 5480,
+ 9123, 10527, 11894, 13659,
+ 15262, 16899, 19366, 21069,
+ 22694, 24314, 27256, 29983,
+ 1553, 2246, 4559, 5500,
+ 6754, 7874, 11739, 13571,
+ 15188, 17879, 20281, 22510,
+ 24614, 26649, 28786, 30755,
+ 1982, 2768, 3834, 5964,
+ 8732, 9908, 11797, 14813,
+ 16311, 17946, 21097, 22851,
+ 24456, 26304, 28166, 29755,
+ 1824, 2529, 3817, 5449,
+ 6854, 8714, 10381, 12286,
+ 14194, 15774, 19524, 21374,
+ 23695, 26069, 28096, 30212,
+ 2212, 2854, 3947, 5898,
+ 9930, 11556, 12854, 14788,
+ 16328, 17700, 20321, 22098,
+ 23672, 25291, 26976, 28586,
+ 2023, 2599, 4024, 4916,
+ 6613, 11149, 12457, 14626,
+ 16320, 17822, 19673, 21172,
+ 23115, 26051, 28825, 30758,
+ 1628, 2206, 3467, 4364,
+ 8679, 10173, 11864, 13679,
+ 14998, 16938, 19207, 21364,
+ 23850, 26115, 28124, 30273,
+ 2014, 2603, 4114, 7254,
+ 8516, 10043, 11822, 13503,
+ 16329, 17826, 19697, 21280,
+ 23151, 24661, 26807, 30161,
+ 2376, 2980, 4422, 5770,
+ 7016, 9723, 11125, 13516,
+ 15485, 16985, 19160, 20587,
+ 24401, 27180, 29046, 30647,
+ 2454, 3502, 4624, 6019,
+ 7632, 8849, 10792, 13964,
+ 15523, 17085, 19611, 21238,
+ 22856, 25108, 28106, 29890,
+ 1573, 2274, 3308, 5999,
+ 8977, 10104, 12457, 14258,
+ 15749, 18180, 19974, 21253,
+ 23045, 25058, 27741, 30315,
+ 1943, 2730, 4140, 6160,
+ 7491, 8986, 11309, 12775,
+ 14820, 16558, 17909, 19757,
+ 21512, 23605, 27274, 29527,
+ 2021, 2582, 4494, 5835,
+ 6993, 8245, 9827, 14733,
+ 16462, 17894, 19647, 21083,
+ 23764, 26667, 29072, 30990,
+ 1052, 1775, 3218, 4378,
+ 7666, 9403, 11248, 13327,
+ 14972, 17962, 20758, 22354,
+ 25071, 27209, 29001, 30609,
+ 2218, 2866, 4223, 5352,
+ 6581, 9980, 11587, 13121,
+ 15193, 16583, 18386, 20080,
+ 22013, 25317, 28127, 29880,
+ 2146, 2840, 4397, 5840,
+ 7449, 8721, 10512, 11936,
+ 13595, 17253, 19310, 20891,
+ 23417, 25627, 27749, 30231,
+ 1972, 2619, 3756, 6367,
+ 7641, 8814, 12286, 13768,
+ 15309, 18036, 19557, 20904,
+ 22582, 24876, 27800, 30440,
+ 2005, 2577, 4272, 7373,
+ 8558, 10223, 11770, 13402,
+ 16502, 18000, 19645, 21104,
+ 22990, 26806, 29505, 30942,
+ 1153, 1822, 3724, 5443,
+ 6990, 8702, 10289, 11899,
+ 13856, 15315, 17601, 21064,
+ 23692, 26083, 28586, 30639,
+ 1304, 1869, 3318, 7195,
+ 9613, 10733, 12393, 13728,
+ 15822, 17474, 18882, 20692,
+ 23114, 25540, 27684, 29244,
+ 2093, 2691, 4018, 6658,
+ 7947, 9147, 10497, 11881,
+ 15888, 17821, 19333, 21233,
+ 23371, 25234, 27553, 29998,
+ 575, 1331, 5304, 6910,
+ 8425, 10086, 11577, 13498,
+ 16444, 18527, 20565, 22847,
+ 24914, 26692, 28759, 30157,
+ 1435, 2024, 3283, 4156,
+ 7611, 10592, 12049, 13927,
+ 15459, 18413, 20495, 22270,
+ 24222, 26093, 28065, 30099,
+ 1632, 2168, 5540, 7478,
+ 8630, 10391, 11644, 14321,
+ 15741, 17357, 18756, 20434,
+ 22799, 26060, 28542, 30696,
+ 1407, 2245, 3405, 5639,
+ 9419, 10685, 12104, 13495,
+ 15535, 18357, 19996, 21689,
+ 24351, 26550, 28853, 30564,
+ 1675, 2226, 4005, 8223,
+ 9975, 11155, 12822, 14316,
+ 16504, 18137, 19574, 21050,
+ 22759, 24912, 28296, 30634,
+ 1080, 1614, 3622, 7565,
+ 8748, 10303, 11713, 13848,
+ 15633, 17434, 19761, 21825,
+ 23571, 25393, 27406, 29063,
+ 1693, 2229, 3456, 4354,
+ 5670, 10890, 12563, 14167,
+ 15879, 17377, 19817, 21971,
+ 24094, 26131, 28298, 30099,
+ 2042, 2959, 4195, 5740,
+ 7106, 8267, 11126, 14973,
+ 16914, 18295, 20532, 21982,
+ 23711, 25769, 27609, 29351,
+ 984, 1612, 3808, 5265,
+ 6885, 8411, 9547, 10889,
+ 12522, 16520, 19549, 21639,
+ 23746, 26058, 28310, 30374,
+ 2036, 2538, 4166, 7761,
+ 9146, 10412, 12144, 13609,
+ 15588, 17169, 18559, 20113,
+ 21820, 24313, 28029, 30612,
+ 1871, 2355, 4061, 5143,
+ 7464, 10129, 11941, 15001,
+ 16680, 18354, 19957, 22279,
+ 24861, 26872, 28988, 30615,
+ 2566, 3161, 4643, 6227,
+ 7406, 9970, 11618, 13416,
+ 15889, 17364, 19121, 20817,
+ 22592, 24720, 28733, 31082,
+ 1700, 2327, 4828, 5939,
+ 7567, 9154, 11087, 12771,
+ 14209, 16121, 20222, 22671,
+ 24648, 26656, 28696, 30745,
+ 3169, 3873, 5046, 6868,
+ 8184, 9480, 12335, 14068,
+ 15774, 17971, 20231, 21711,
+ 23520, 25245, 27026, 28730,
+ 1564, 2391, 4229, 6730,
+ 8905, 10459, 13026, 15033,
+ 17265, 19809, 21849, 23741,
+ 25490, 27312, 29061, 30527,
+ 2864, 3559, 4719, 6441,
+ 9592, 11055, 12763, 14784,
+ 16428, 18164, 20486, 22262,
+ 24183, 26263, 28383, 30224,
+ 2673, 3449, 4581, 5983,
+ 6863, 8311, 12464, 13911,
+ 15738, 17791, 19416, 21182,
+ 24025, 26561, 28723, 30440,
+ 2419, 3049, 4274, 6384,
+ 8564, 9661, 11288, 12676,
+ 14447, 17578, 19816, 21231,
+ 23099, 25270, 26899, 28926,
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+};
+
+const SKP_Silk_NLSF_CBS SKP_Silk_NLSF_CB0_16_Stage_info[ NLSF_MSVQ_CB0_16_STAGES ] =
+{
+ { 128, &SKP_Silk_NLSF_MSVQ_CB0_16_Q15[ 16 * 0 ], &SKP_Silk_NLSF_MSVQ_CB0_16_rates_Q5[ 0 ] },
+ { 16, &SKP_Silk_NLSF_MSVQ_CB0_16_Q15[ 16 * 128 ], &SKP_Silk_NLSF_MSVQ_CB0_16_rates_Q5[ 128 ] },
+ { 8, &SKP_Silk_NLSF_MSVQ_CB0_16_Q15[ 16 * 144 ], &SKP_Silk_NLSF_MSVQ_CB0_16_rates_Q5[ 144 ] },
+ { 8, &SKP_Silk_NLSF_MSVQ_CB0_16_Q15[ 16 * 152 ], &SKP_Silk_NLSF_MSVQ_CB0_16_rates_Q5[ 152 ] },
+ { 8, &SKP_Silk_NLSF_MSVQ_CB0_16_Q15[ 16 * 160 ], &SKP_Silk_NLSF_MSVQ_CB0_16_rates_Q5[ 160 ] },
+ { 8, &SKP_Silk_NLSF_MSVQ_CB0_16_Q15[ 16 * 168 ], &SKP_Silk_NLSF_MSVQ_CB0_16_rates_Q5[ 168 ] },
+ { 8, &SKP_Silk_NLSF_MSVQ_CB0_16_Q15[ 16 * 176 ], &SKP_Silk_NLSF_MSVQ_CB0_16_rates_Q5[ 176 ] },
+ { 8, &SKP_Silk_NLSF_MSVQ_CB0_16_Q15[ 16 * 184 ], &SKP_Silk_NLSF_MSVQ_CB0_16_rates_Q5[ 184 ] },
+ { 8, &SKP_Silk_NLSF_MSVQ_CB0_16_Q15[ 16 * 192 ], &SKP_Silk_NLSF_MSVQ_CB0_16_rates_Q5[ 192 ] },
+ { 16, &SKP_Silk_NLSF_MSVQ_CB0_16_Q15[ 16 * 200 ], &SKP_Silk_NLSF_MSVQ_CB0_16_rates_Q5[ 200 ] }
+};
+
+const SKP_Silk_NLSF_CB_struct SKP_Silk_NLSF_CB0_16 =
+{
+ NLSF_MSVQ_CB0_16_STAGES,
+ SKP_Silk_NLSF_CB0_16_Stage_info,
+ SKP_Silk_NLSF_MSVQ_CB0_16_ndelta_min_Q15,
+ SKP_Silk_NLSF_MSVQ_CB0_16_CDF,
+ SKP_Silk_NLSF_MSVQ_CB0_16_CDF_start_ptr,
+ SKP_Silk_NLSF_MSVQ_CB0_16_CDF_middle_idx
+};
+
--- /dev/null
+++ b/src/SKP_Silk_tables_NLSF_CB0_16.h
@@ -1,0 +1,51 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#ifndef SKP_SILK_TABLES_NLSF_CB0_16_H
+#define SKP_SILK_TABLES_NLSF_CB0_16_H
+
+#include "SKP_Silk_define.h"
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#define NLSF_MSVQ_CB0_16_STAGES 10
+#define NLSF_MSVQ_CB0_16_VECTORS 216
+
+/* NLSF codebook entropy coding tables */
+extern const SKP_uint16 SKP_Silk_NLSF_MSVQ_CB0_16_CDF[ NLSF_MSVQ_CB0_16_VECTORS + NLSF_MSVQ_CB0_16_STAGES ];
+extern const SKP_uint16 * const SKP_Silk_NLSF_MSVQ_CB0_16_CDF_start_ptr[ NLSF_MSVQ_CB0_16_STAGES ];
+extern const SKP_int SKP_Silk_NLSF_MSVQ_CB0_16_CDF_middle_idx[ NLSF_MSVQ_CB0_16_STAGES ];
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
--- /dev/null
+++ b/src/SKP_Silk_tables_NLSF_CB1_10.c
@@ -1,0 +1,577 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+/**********************************************/
+/* This file has been automatically generated */
+/* */
+/* ROM usage: 90+803 Words */
+/**********************************************/
+
+#include "SKP_Silk_structs.h"
+#include "SKP_Silk_tables_NLSF_CB1_10.h"
+
+const SKP_uint16 SKP_Silk_NLSF_MSVQ_CB1_10_CDF[ NLSF_MSVQ_CB1_10_VECTORS + NLSF_MSVQ_CB1_10_STAGES ] =
+{
+ 0,
+ 17096,
+ 24130,
+ 28997,
+ 33179,
+ 36696,
+ 40213,
+ 42493,
+ 44252,
+ 45973,
+ 47551,
+ 49095,
+ 50542,
+ 51898,
+ 53196,
+ 54495,
+ 55685,
+ 56851,
+ 57749,
+ 58628,
+ 59435,
+ 60207,
+ 60741,
+ 61220,
+ 61700,
+ 62179,
+ 62659,
+ 63138,
+ 63617,
+ 64097,
+ 64576,
+ 65056,
+ 65535,
+ 0,
+ 20378,
+ 33032,
+ 40395,
+ 46721,
+ 51707,
+ 56585,
+ 61157,
+ 65535,
+ 0,
+ 15055,
+ 25472,
+ 35447,
+ 42501,
+ 48969,
+ 54773,
+ 60212,
+ 65535,
+ 0,
+ 12069,
+ 22440,
+ 32812,
+ 40145,
+ 46870,
+ 53595,
+ 59630,
+ 65535,
+ 0,
+ 10839,
+ 19954,
+ 27957,
+ 35961,
+ 43965,
+ 51465,
+ 58805,
+ 65535,
+ 0,
+ 8933,
+ 17674,
+ 26415,
+ 34785,
+ 42977,
+ 50820,
+ 58496,
+ 65535
+};
+
+const SKP_uint16 * const SKP_Silk_NLSF_MSVQ_CB1_10_CDF_start_ptr[ NLSF_MSVQ_CB1_10_STAGES ] =
+{
+ &SKP_Silk_NLSF_MSVQ_CB1_10_CDF[ 0 ],
+ &SKP_Silk_NLSF_MSVQ_CB1_10_CDF[ 33 ],
+ &SKP_Silk_NLSF_MSVQ_CB1_10_CDF[ 42 ],
+ &SKP_Silk_NLSF_MSVQ_CB1_10_CDF[ 51 ],
+ &SKP_Silk_NLSF_MSVQ_CB1_10_CDF[ 60 ],
+ &SKP_Silk_NLSF_MSVQ_CB1_10_CDF[ 69 ]
+};
+
+const SKP_int SKP_Silk_NLSF_MSVQ_CB1_10_CDF_middle_idx[ NLSF_MSVQ_CB1_10_STAGES ] =
+{
+ 5,
+ 3,
+ 4,
+ 4,
+ 5,
+ 5
+};
+
+const SKP_int16 SKP_Silk_NLSF_MSVQ_CB1_10_rates_Q5[ NLSF_MSVQ_CB1_10_VECTORS ] =
+{
+ 62, 103,
+ 120, 127,
+ 135, 135,
+ 155, 167,
+ 168, 172,
+ 173, 176,
+ 179, 181,
+ 181, 185,
+ 186, 198,
+ 199, 203,
+ 205, 222,
+ 227, 227,
+ 227, 227,
+ 227, 227,
+ 227, 227,
+ 227, 227,
+ 54, 76,
+ 101, 108,
+ 119, 120,
+ 123, 125,
+ 68, 85,
+ 87, 103,
+ 107, 112,
+ 115, 116,
+ 78, 85,
+ 85, 101,
+ 105, 105,
+ 110, 111,
+ 83, 91,
+ 97, 97,
+ 97, 100,
+ 101, 105,
+ 92, 93,
+ 93, 95,
+ 96, 98,
+ 99, 103
+};
+
+const SKP_int SKP_Silk_NLSF_MSVQ_CB1_10_ndelta_min_Q15[ 10 + 1 ] =
+{
+ 462,
+ 3,
+ 64,
+ 74,
+ 98,
+ 50,
+ 97,
+ 68,
+ 120,
+ 53,
+ 639
+};
+
+const SKP_int16 SKP_Silk_NLSF_MSVQ_CB1_10_Q15[ 10 * NLSF_MSVQ_CB1_10_VECTORS ] =
+{
+ 1877, 4646,
+ 7712, 10745,
+ 13964, 17028,
+ 20239, 23182,
+ 26471, 29287,
+ 1612, 3278,
+ 7086, 9975,
+ 13228, 16264,
+ 19596, 22690,
+ 26037, 28965,
+ 2169, 3830,
+ 6460, 8958,
+ 11960, 14750,
+ 18408, 21659,
+ 25018, 28043,
+ 3680, 6024,
+ 8986, 12256,
+ 15201, 18188,
+ 21741, 24460,
+ 27484, 30059,
+ 2584, 5187,
+ 7799, 10902,
+ 13179, 15765,
+ 19017, 22431,
+ 25891, 28698,
+ 3731, 5751,
+ 8650, 11742,
+ 15090, 17407,
+ 20391, 23421,
+ 26228, 29247,
+ 2107, 6323,
+ 8915, 12226,
+ 14775, 17791,
+ 20664, 23679,
+ 26829, 29353,
+ 1677, 2870,
+ 5386, 8077,
+ 11817, 15176,
+ 18657, 22006,
+ 25513, 28689,
+ 2111, 3625,
+ 7027, 10588,
+ 14059, 17193,
+ 21137, 24260,
+ 27577, 30036,
+ 2428, 4010,
+ 5765, 9376,
+ 13805, 15821,
+ 19444, 22389,
+ 25295, 29310,
+ 2256, 4628,
+ 8377, 12441,
+ 15283, 19462,
+ 22257, 25551,
+ 28432, 30304,
+ 2352, 3675,
+ 6129, 11868,
+ 14551, 16655,
+ 19624, 21883,
+ 26526, 28849,
+ 5243, 7248,
+ 10558, 13269,
+ 15651, 17919,
+ 21141, 23827,
+ 27102, 29519,
+ 4422, 6725,
+ 10449, 13273,
+ 16124, 19921,
+ 22826, 26061,
+ 28763, 30583,
+ 4508, 6291,
+ 9504, 11809,
+ 13827, 15950,
+ 19077, 22084,
+ 25740, 28658,
+ 2540, 4297,
+ 8579, 13578,
+ 16634, 19101,
+ 21547, 23887,
+ 26777, 29146,
+ 3377, 6358,
+ 10224, 14518,
+ 17905, 21056,
+ 23637, 25784,
+ 28161, 30109,
+ 4177, 5942,
+ 8159, 10108,
+ 12130, 15470,
+ 20191, 23326,
+ 26782, 29359,
+ 2492, 3801,
+ 6144, 9825,
+ 16000, 18671,
+ 20893, 23663,
+ 25899, 28974,
+ 3011, 4727,
+ 6834, 10505,
+ 12465, 14496,
+ 17065, 20052,
+ 25265, 28057,
+ 4149, 7197,
+ 12338, 15076,
+ 18002, 20190,
+ 22187, 24723,
+ 27083, 29125,
+ 2975, 4578,
+ 6448, 8378,
+ 9671, 13225,
+ 19502, 22277,
+ 26058, 28850,
+ 4102, 5760,
+ 7744, 9484,
+ 10744, 12308,
+ 14677, 19607,
+ 24841, 28381,
+ 4931, 9287,
+ 12477, 13395,
+ 13712, 14351,
+ 16048, 19867,
+ 24188, 28994,
+ 4141, 7867,
+ 13140, 17720,
+ 20064, 21108,
+ 21692, 22722,
+ 23736, 27449,
+ 4011, 8720,
+ 13234, 16206,
+ 17601, 18289,
+ 18524, 19689,
+ 23234, 27882,
+ 3420, 5995,
+ 11230, 15117,
+ 15907, 16783,
+ 17762, 23347,
+ 26898, 29946,
+ 3080, 6786,
+ 10465, 13676,
+ 18059, 23615,
+ 27058, 29082,
+ 29563, 29905,
+ 3038, 5620,
+ 9266, 12870,
+ 18803, 19610,
+ 20010, 20802,
+ 23882, 29306,
+ 3314, 6420,
+ 9046, 13262,
+ 15869, 23117,
+ 23667, 24215,
+ 24487, 25915,
+ 3469, 6963,
+ 10103, 15282,
+ 20531, 23240,
+ 25024, 26021,
+ 26736, 27255,
+ 3041, 6459,
+ 9777, 12896,
+ 16315, 19410,
+ 24070, 29353,
+ 31795, 32075,
+ -200, -134,
+ -113, -204,
+ -347, -440,
+ -352, -211,
+ -418, -172,
+ -313, 59,
+ 495, 772,
+ 721, 614,
+ 334, 444,
+ 225, 242,
+ 161, 16,
+ 274, 564,
+ -73, -188,
+ -395, -171,
+ 777, 508,
+ 1340, 1145,
+ 699, 196,
+ 223, 173,
+ 90, 25,
+ -26, 18,
+ 133, -105,
+ -360, -277,
+ 859, 634,
+ 41, -557,
+ -768, -926,
+ -601, -1021,
+ -1189, -365,
+ 225, 107,
+ 374, -50,
+ 433, 417,
+ 156, 39,
+ -597, -1397,
+ -1594, -592,
+ -485, -292,
+ 253, 87,
+ -0, -6,
+ -25, -345,
+ -240, 120,
+ 1261, 946,
+ 166, -277,
+ 241, 167,
+ 170, 429,
+ 518, 714,
+ 602, 254,
+ 134, 92,
+ -152, -324,
+ -394, 49,
+ -151, -304,
+ -724, -657,
+ -162, -369,
+ -35, 3,
+ -2, -312,
+ -200, -92,
+ -227, 242,
+ 628, 565,
+ -124, 1056,
+ 770, 101,
+ -84, -33,
+ 4, -192,
+ -272, 5,
+ -627, -977,
+ 419, 472,
+ 53, -103,
+ 145, 322,
+ -95, -31,
+ -100, -303,
+ -560, -1067,
+ -413, 714,
+ 283, 2,
+ -223, -367,
+ 523, 360,
+ -38, -115,
+ 378, -591,
+ -718, 448,
+ -481, -274,
+ 180, -88,
+ -581, -157,
+ -696, -1265,
+ 394, -479,
+ -23, 124,
+ -43, 19,
+ -113, -236,
+ -412, -659,
+ -200, 2,
+ -69, -342,
+ 199, 55,
+ 58, -36,
+ -51, -62,
+ 507, 507,
+ 427, 442,
+ 36, 601,
+ -141, 68,
+ 274, 274,
+ 68, -12,
+ -4, 71,
+ -193, -464,
+ -425, -383,
+ 408, 203,
+ -337, 236,
+ 410, -59,
+ -25, -341,
+ -449, 28,
+ -9, 90,
+ 332, -14,
+ -905, 96,
+ -540, -242,
+ 679, -59,
+ 192, -24,
+ 60, -217,
+ 5, -37,
+ 179, -20,
+ 311, 519,
+ 274, 72,
+ -326, -1030,
+ -262, 213,
+ 380, 82,
+ 328, 411,
+ -540, 574,
+ -283, 151,
+ 181, -402,
+ -278, -240,
+ -110, -227,
+ -264, -89,
+ -250, -259,
+ -27, 106,
+ -239, -98,
+ -390, 118,
+ 61, 104,
+ 294, 532,
+ 92, -13,
+ 60, -233,
+ 335, 541,
+ 307, -26,
+ -110, -91,
+ -231, -460,
+ 170, 201,
+ 96, -372,
+ 132, 435,
+ -302, 216,
+ -279, -41,
+ 74, 190,
+ 368, 273,
+ -186, -608,
+ -157, 159,
+ 12, 278,
+ 245, 307,
+ 25, -187,
+ -16, 55,
+ 30, -163,
+ 548, -307,
+ 106, -5,
+ 27, 330,
+ -416, 475,
+ 438, -235,
+ 104, 137,
+ 21, -5,
+ -300, -468,
+ 521, -347,
+ 170, -200,
+ -219, 308,
+ -122, -133,
+ 219, -16,
+ 359, 412,
+ -89, -111,
+ 48, 322,
+ 142, 177,
+ -286, -127,
+ -39, -63,
+ -42, -451,
+ 160, 308,
+ -57, 193,
+ -48, 74,
+ -346, 59,
+ -27, 27,
+ -469, -277,
+ -344, 282,
+ 262, 122,
+ 171, -249,
+ 27, 258,
+ 188, -3,
+ 67, -206,
+ -284, 291,
+ -117, -88,
+ -477, 375,
+ 50, 106,
+ 99, -182,
+ 438, -376,
+ -401, -49,
+ 119, -23,
+ -10, -48,
+ -116, -200,
+ -310, 121,
+ 73, 7,
+ 237, -226,
+ 139, -456,
+ 397, 35,
+ 3, -108,
+ 323, -75,
+ 332, 198,
+ -99, -21
+};
+
+const SKP_Silk_NLSF_CBS SKP_Silk_NLSF_CB1_10_Stage_info[ NLSF_MSVQ_CB1_10_STAGES ] =
+{
+ { 32, &SKP_Silk_NLSF_MSVQ_CB1_10_Q15[ 10 * 0 ], &SKP_Silk_NLSF_MSVQ_CB1_10_rates_Q5[ 0 ] },
+ { 8, &SKP_Silk_NLSF_MSVQ_CB1_10_Q15[ 10 * 32 ], &SKP_Silk_NLSF_MSVQ_CB1_10_rates_Q5[ 32 ] },
+ { 8, &SKP_Silk_NLSF_MSVQ_CB1_10_Q15[ 10 * 40 ], &SKP_Silk_NLSF_MSVQ_CB1_10_rates_Q5[ 40 ] },
+ { 8, &SKP_Silk_NLSF_MSVQ_CB1_10_Q15[ 10 * 48 ], &SKP_Silk_NLSF_MSVQ_CB1_10_rates_Q5[ 48 ] },
+ { 8, &SKP_Silk_NLSF_MSVQ_CB1_10_Q15[ 10 * 56 ], &SKP_Silk_NLSF_MSVQ_CB1_10_rates_Q5[ 56 ] },
+ { 8, &SKP_Silk_NLSF_MSVQ_CB1_10_Q15[ 10 * 64 ], &SKP_Silk_NLSF_MSVQ_CB1_10_rates_Q5[ 64 ] }
+};
+
+const SKP_Silk_NLSF_CB_struct SKP_Silk_NLSF_CB1_10 =
+{
+ NLSF_MSVQ_CB1_10_STAGES,
+ SKP_Silk_NLSF_CB1_10_Stage_info,
+ SKP_Silk_NLSF_MSVQ_CB1_10_ndelta_min_Q15,
+ SKP_Silk_NLSF_MSVQ_CB1_10_CDF,
+ SKP_Silk_NLSF_MSVQ_CB1_10_CDF_start_ptr,
+ SKP_Silk_NLSF_MSVQ_CB1_10_CDF_middle_idx
+};
+
--- /dev/null
+++ b/src/SKP_Silk_tables_NLSF_CB1_10.h
@@ -1,0 +1,51 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#ifndef SKP_SILK_TABLES_NLSF_CB1_10_H
+#define SKP_SILK_TABLES_NLSF_CB1_10_H
+
+#include "SKP_Silk_define.h"
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#define NLSF_MSVQ_CB1_10_STAGES 6
+#define NLSF_MSVQ_CB1_10_VECTORS 72
+
+/* NLSF codebook entropy coding tables */
+extern const SKP_uint16 SKP_Silk_NLSF_MSVQ_CB1_10_CDF[ NLSF_MSVQ_CB1_10_VECTORS + NLSF_MSVQ_CB1_10_STAGES ];
+extern const SKP_uint16 * const SKP_Silk_NLSF_MSVQ_CB1_10_CDF_start_ptr[ NLSF_MSVQ_CB1_10_STAGES ];
+extern const SKP_int SKP_Silk_NLSF_MSVQ_CB1_10_CDF_middle_idx[ NLSF_MSVQ_CB1_10_STAGES ];
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
--- /dev/null
+++ b/src/SKP_Silk_tables_NLSF_CB1_16.c
@@ -1,0 +1,703 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+/**********************************************/
+/* This file has been automatically generated */
+/* */
+/* ROM usage: 134+1785 Words */
+/**********************************************/
+
+#include "SKP_Silk_structs.h"
+#include "SKP_Silk_tables_NLSF_CB1_16.h"
+
+const SKP_uint16 SKP_Silk_NLSF_MSVQ_CB1_16_CDF[ NLSF_MSVQ_CB1_16_VECTORS + NLSF_MSVQ_CB1_16_STAGES ] =
+{
+ 0,
+ 19099,
+ 26957,
+ 30639,
+ 34242,
+ 37546,
+ 40447,
+ 43287,
+ 46005,
+ 48445,
+ 49865,
+ 51284,
+ 52673,
+ 53975,
+ 55221,
+ 56441,
+ 57267,
+ 58025,
+ 58648,
+ 59232,
+ 59768,
+ 60248,
+ 60729,
+ 61210,
+ 61690,
+ 62171,
+ 62651,
+ 63132,
+ 63613,
+ 64093,
+ 64574,
+ 65054,
+ 65535,
+ 0,
+ 28808,
+ 38775,
+ 46801,
+ 51785,
+ 55886,
+ 59410,
+ 62572,
+ 65535,
+ 0,
+ 27376,
+ 38639,
+ 45052,
+ 51465,
+ 55448,
+ 59021,
+ 62594,
+ 65535,
+ 0,
+ 33403,
+ 39569,
+ 45102,
+ 49961,
+ 54047,
+ 57959,
+ 61788,
+ 65535,
+ 0,
+ 25851,
+ 43356,
+ 47828,
+ 52204,
+ 55964,
+ 59413,
+ 62507,
+ 65535,
+ 0,
+ 34277,
+ 40337,
+ 45432,
+ 50311,
+ 54326,
+ 58171,
+ 61853,
+ 65535,
+ 0,
+ 33538,
+ 39865,
+ 45302,
+ 50076,
+ 54549,
+ 58478,
+ 62159,
+ 65535,
+ 0,
+ 27445,
+ 35258,
+ 40665,
+ 46072,
+ 51362,
+ 56540,
+ 61086,
+ 65535,
+ 0,
+ 22080,
+ 30779,
+ 37065,
+ 43085,
+ 48849,
+ 54613,
+ 60133,
+ 65535,
+ 0,
+ 13417,
+ 21748,
+ 30078,
+ 38231,
+ 46383,
+ 53091,
+ 59515,
+ 65535
+};
+
+const SKP_uint16 * const SKP_Silk_NLSF_MSVQ_CB1_16_CDF_start_ptr[ NLSF_MSVQ_CB1_16_STAGES ] =
+{
+ &SKP_Silk_NLSF_MSVQ_CB1_16_CDF[ 0 ],
+ &SKP_Silk_NLSF_MSVQ_CB1_16_CDF[ 33 ],
+ &SKP_Silk_NLSF_MSVQ_CB1_16_CDF[ 42 ],
+ &SKP_Silk_NLSF_MSVQ_CB1_16_CDF[ 51 ],
+ &SKP_Silk_NLSF_MSVQ_CB1_16_CDF[ 60 ],
+ &SKP_Silk_NLSF_MSVQ_CB1_16_CDF[ 69 ],
+ &SKP_Silk_NLSF_MSVQ_CB1_16_CDF[ 78 ],
+ &SKP_Silk_NLSF_MSVQ_CB1_16_CDF[ 87 ],
+ &SKP_Silk_NLSF_MSVQ_CB1_16_CDF[ 96 ],
+ &SKP_Silk_NLSF_MSVQ_CB1_16_CDF[ 105 ]
+};
+
+const SKP_int SKP_Silk_NLSF_MSVQ_CB1_16_CDF_middle_idx[ NLSF_MSVQ_CB1_16_STAGES ] =
+{
+ 5,
+ 2,
+ 2,
+ 2,
+ 2,
+ 2,
+ 2,
+ 3,
+ 3,
+ 4
+};
+
+const SKP_int16 SKP_Silk_NLSF_MSVQ_CB1_16_rates_Q5[ NLSF_MSVQ_CB1_16_VECTORS ] =
+{
+ 57, 98,
+ 133, 134,
+ 138, 144,
+ 145, 147,
+ 152, 177,
+ 177, 178,
+ 181, 183,
+ 184, 202,
+ 206, 215,
+ 218, 222,
+ 227, 227,
+ 227, 227,
+ 227, 227,
+ 227, 227,
+ 227, 227,
+ 227, 227,
+ 38, 87,
+ 97, 119,
+ 128, 135,
+ 140, 143,
+ 40, 81,
+ 107, 107,
+ 129, 134,
+ 134, 143,
+ 31, 109,
+ 114, 120,
+ 128, 130,
+ 131, 132,
+ 43, 61,
+ 124, 125,
+ 132, 136,
+ 141, 142,
+ 30, 110,
+ 118, 120,
+ 129, 131,
+ 133, 133,
+ 31, 108,
+ 115, 121,
+ 124, 130,
+ 133, 137,
+ 40, 98,
+ 115, 115,
+ 116, 117,
+ 123, 124,
+ 50, 93,
+ 108, 110,
+ 112, 112,
+ 114, 115,
+ 73, 95,
+ 95, 96,
+ 96, 105,
+ 107, 110
+};
+
+const SKP_int SKP_Silk_NLSF_MSVQ_CB1_16_ndelta_min_Q15[ 16 + 1 ] =
+{
+ 148,
+ 3,
+ 60,
+ 68,
+ 117,
+ 86,
+ 121,
+ 124,
+ 152,
+ 153,
+ 207,
+ 151,
+ 225,
+ 239,
+ 126,
+ 183,
+ 792
+};
+
+const SKP_int16 SKP_Silk_NLSF_MSVQ_CB1_16_Q15[ 16 * NLSF_MSVQ_CB1_16_VECTORS ] =
+{
+ 1309, 3060, 5071, 6996,
+ 9028, 10938, 12934, 14891,
+ 16933, 18854, 20792, 22764,
+ 24753, 26659, 28626, 30501,
+ 1264, 2745, 4610, 6408,
+ 8286, 10043, 12084, 14108,
+ 16118, 18163, 20095, 22164,
+ 24264, 26316, 28329, 30251,
+ 1044, 2080, 3672, 5179,
+ 7140, 9100, 11070, 13065,
+ 15423, 17790, 19931, 22101,
+ 24290, 26361, 28499, 30418,
+ 1131, 2476, 4478, 6149,
+ 7902, 9875, 11938, 13809,
+ 15869, 17730, 19948, 21707,
+ 23761, 25535, 27426, 28917,
+ 1040, 2004, 4026, 6100,
+ 8432, 10494, 12610, 14694,
+ 16797, 18775, 20799, 22782,
+ 24772, 26682, 28631, 30516,
+ 2310, 3812, 5913, 7933,
+ 10033, 11881, 13885, 15798,
+ 17751, 19576, 21482, 23276,
+ 25157, 27010, 28833, 30623,
+ 1254, 2847, 5013, 6781,
+ 8626, 10370, 12726, 14633,
+ 16281, 17852, 19870, 21472,
+ 23002, 24629, 26710, 27960,
+ 1468, 3059, 4987, 7026,
+ 8741, 10412, 12281, 14020,
+ 15970, 17723, 19640, 21522,
+ 23472, 25661, 27986, 30225,
+ 2171, 3566, 5605, 7384,
+ 9404, 11220, 13030, 14758,
+ 16687, 18417, 20346, 22091,
+ 24055, 26212, 28356, 30397,
+ 2409, 4676, 7543, 9786,
+ 11419, 12935, 14368, 15653,
+ 17366, 18943, 20762, 22477,
+ 24440, 26327, 28284, 30242,
+ 2354, 4222, 6820, 9107,
+ 11596, 13934, 15973, 17682,
+ 19158, 20517, 21991, 23420,
+ 25178, 26936, 28794, 30527,
+ 1323, 2414, 4184, 6039,
+ 7534, 9398, 11099, 13097,
+ 14799, 16451, 18434, 20887,
+ 23490, 25838, 28046, 30225,
+ 1361, 3243, 6048, 8511,
+ 11001, 13145, 15073, 16608,
+ 18126, 19381, 20912, 22607,
+ 24660, 26668, 28663, 30566,
+ 1216, 2648, 5901, 8422,
+ 10037, 11425, 12973, 14603,
+ 16686, 18600, 20555, 22415,
+ 24450, 26280, 28206, 30077,
+ 2417, 4048, 6316, 8433,
+ 10510, 12757, 15072, 17295,
+ 19573, 21503, 23329, 24782,
+ 26235, 27689, 29214, 30819,
+ 1012, 2345, 4991, 7377,
+ 9465, 11916, 14296, 16566,
+ 18672, 20544, 22292, 23838,
+ 25415, 27050, 28848, 30551,
+ 1937, 3693, 6267, 8019,
+ 10372, 12194, 14287, 15657,
+ 17431, 18864, 20769, 22206,
+ 24037, 25463, 27383, 28602,
+ 1969, 3305, 5017, 6726,
+ 8375, 9993, 11634, 13280,
+ 15078, 16751, 18464, 20119,
+ 21959, 23858, 26224, 29298,
+ 1198, 2647, 5428, 7423,
+ 9775, 12155, 14665, 16344,
+ 18121, 19790, 21557, 22847,
+ 24484, 25742, 27639, 28711,
+ 1636, 3353, 5447, 7597,
+ 9837, 11647, 13964, 16019,
+ 17862, 20116, 22319, 24037,
+ 25966, 28086, 29914, 31294,
+ 2676, 4105, 6378, 8223,
+ 10058, 11549, 13072, 14453,
+ 15956, 17355, 18931, 20402,
+ 22183, 23884, 25717, 27723,
+ 1373, 2593, 4449, 5633,
+ 7300, 8425, 9474, 10818,
+ 12769, 15722, 19002, 21429,
+ 23682, 25924, 28135, 30333,
+ 1596, 3183, 5378, 7164,
+ 8670, 10105, 11470, 12834,
+ 13991, 15042, 16642, 17903,
+ 20759, 25283, 27770, 30240,
+ 2037, 3987, 6237, 8117,
+ 9954, 12245, 14217, 15892,
+ 17775, 20114, 22314, 25942,
+ 26305, 26483, 26796, 28561,
+ 2181, 3858, 5760, 7924,
+ 10041, 11577, 13769, 15700,
+ 17429, 19879, 23583, 24538,
+ 25212, 25693, 28688, 30507,
+ 1992, 3882, 6474, 7883,
+ 9381, 12672, 14340, 15701,
+ 16658, 17832, 20850, 22885,
+ 24677, 26457, 28491, 30460,
+ 2391, 3988, 5448, 7432,
+ 11014, 12579, 13140, 14146,
+ 15898, 18592, 21104, 22993,
+ 24673, 27186, 28142, 29612,
+ 1713, 5102, 6989, 7798,
+ 8670, 10110, 12746, 14881,
+ 16709, 18407, 20126, 22107,
+ 24181, 26198, 28237, 30137,
+ 1612, 3617, 6148, 8359,
+ 9576, 11528, 14936, 17809,
+ 18287, 18729, 19001, 21111,
+ 24631, 26596, 28740, 30643,
+ 2266, 4168, 7862, 9546,
+ 9618, 9703, 10134, 13897,
+ 16265, 18432, 20587, 22605,
+ 24754, 26994, 29125, 30840,
+ 1840, 3917, 6272, 7809,
+ 9714, 11438, 13767, 15799,
+ 19244, 21972, 22980, 23180,
+ 23723, 25650, 29117, 31085,
+ 1458, 3612, 6008, 7488,
+ 9827, 11893, 14086, 15734,
+ 17440, 19535, 22424, 24767,
+ 29246, 29928, 30516, 30947,
+ -102, -121, -31, -6,
+ 5, -2, 8, -18,
+ -4, 6, 14, -2,
+ -12, -16, -12, -60,
+ -126, -353, -574, -677,
+ -657, -617, -498, -393,
+ -348, -277, -225, -164,
+ -102, -70, -31, 33,
+ 4, 379, 387, 551,
+ 605, 620, 532, 482,
+ 442, 454, 385, 347,
+ 322, 299, 266, 200,
+ 1168, 951, 672, 246,
+ 60, -161, -259, -234,
+ -253, -282, -203, -187,
+ -155, -176, -198, -178,
+ 10, 170, 393, 609,
+ 555, 208, -330, -571,
+ -769, -633, -319, -43,
+ 95, 105, 106, 116,
+ -152, -140, -125, 5,
+ 173, 274, 264, 331,
+ -37, -293, -609, -786,
+ -959, -814, -645, -238,
+ -91, 36, -11, -101,
+ -279, -227, -40, 90,
+ 530, 677, 890, 1104,
+ 999, 835, 564, 295,
+ -280, -364, -340, -331,
+ -284, 288, 761, 880,
+ 988, 627, 146, -226,
+ -203, -181, -142, 39,
+ 24, -26, -107, -92,
+ -161, -135, -131, -88,
+ -160, -156, -75, -43,
+ -36, -6, -33, 33,
+ -324, -415, -108, 124,
+ 157, 191, 203, 197,
+ 144, 109, 152, 176,
+ 190, 122, 101, 159,
+ 663, 668, 480, 400,
+ 379, 444, 446, 458,
+ 343, 351, 310, 228,
+ 133, 44, 75, 63,
+ -84, 39, -29, 35,
+ -94, -233, -261, -354,
+ 77, 262, -24, -145,
+ -333, -409, -404, -597,
+ -488, -300, 910, 592,
+ 412, 120, 130, -51,
+ -37, -77, -172, -181,
+ -159, -148, -72, -62,
+ 510, 516, 113, -585,
+ -1075, -957, -417, -195,
+ 9, 7, -88, -173,
+ -91, 54, 98, 95,
+ -28, 197, -527, -621,
+ 157, 122, -168, 147,
+ 309, 300, 336, 315,
+ 396, 408, 376, 106,
+ -162, -170, -315, 98,
+ 821, 908, 570, -33,
+ -312, -568, -572, -378,
+ -107, 23, 156, 93,
+ -129, -87, 20, -72,
+ -37, 40, 21, 27,
+ 48, 75, 77, 65,
+ 46, 71, 66, 47,
+ 136, 344, 236, 322,
+ 170, 283, 269, 291,
+ 162, -43, -204, -259,
+ -240, -305, -350, -312,
+ 447, 348, 345, 257,
+ 71, -131, -77, -190,
+ -202, -40, 35, 133,
+ 261, 365, 438, 303,
+ -8, 22, 140, 137,
+ -300, -641, -764, -268,
+ -23, -25, 73, -162,
+ -150, -212, -72, 6,
+ 39, 78, 104, -93,
+ -308, -136, 117, -71,
+ -513, -820, -700, -450,
+ -161, -23, 29, 78,
+ 337, 106, -406, -782,
+ -112, 233, 383, 62,
+ -126, 6, -77, -29,
+ -146, -123, -51, -27,
+ -27, -381, -641, 402,
+ 539, 8, -207, -366,
+ -36, -27, -204, -227,
+ -237, -189, -64, 51,
+ -92, -137, -281, 62,
+ 233, 92, 148, 294,
+ 363, 416, 564, 625,
+ 370, -36, -469, -462,
+ 102, 168, 32, 117,
+ -21, 97, 139, 89,
+ 104, 35, 4, 82,
+ 66, 58, 73, 93,
+ -76, -320, -236, -189,
+ -203, -142, -27, -73,
+ 9, -9, -25, 12,
+ -15, 4, 4, -50,
+ 314, 180, 162, -49,
+ 199, -108, -227, -66,
+ -447, -67, -264, -394,
+ 5, 55, -133, -176,
+ -116, -241, 272, 109,
+ 282, 262, 192, -64,
+ -392, -514, 156, 203,
+ 154, 72, -34, -160,
+ -73, 3, -33, -431,
+ 321, 18, -567, -590,
+ -108, 88, 66, 51,
+ -31, -193, -46, 65,
+ -29, -23, 215, -31,
+ 101, -113, 32, 304,
+ 88, 320, 448, 5,
+ -439, -562, -508, -135,
+ -13, -171, -8, 182,
+ -99, -181, -149, 376,
+ 476, 64, -396, -652,
+ -150, 176, 222, 65,
+ -590, 719, 271, 399,
+ 245, 72, -156, -152,
+ -176, 59, 94, 125,
+ -9, -7, 9, 1,
+ -61, -116, -82, 1,
+ 79, 22, -44, -15,
+ -48, -65, -62, -101,
+ -102, -54, -70, -78,
+ -80, -25, 398, 71,
+ 139, 38, 90, 194,
+ 222, 249, 165, 94,
+ 221, 262, 163, 91,
+ -206, 573, 200, -287,
+ -147, 5, -18, -85,
+ -74, -125, -87, 85,
+ 141, 4, -4, 28,
+ 234, 48, -150, -111,
+ -506, 237, -209, 345,
+ 94, -124, 77, 121,
+ 143, 12, -80, -48,
+ 191, 144, -93, -65,
+ -151, -643, 435, 106,
+ 87, 7, 65, 102,
+ 94, 68, 5, 99,
+ 222, 93, 94, 355,
+ -13, -89, -228, -503,
+ 287, 109, 108, 449,
+ 253, -29, -109, -116,
+ 15, -73, -20, 131,
+ -147, 72, 59, -150,
+ -594, 273, 316, 132,
+ 199, 106, 198, 212,
+ 220, 82, 45, -13,
+ 223, 137, 270, 38,
+ 252, 135, -177, -207,
+ -360, -102, 403, 406,
+ -14, 83, 64, 51,
+ -7, -99, -97, -88,
+ -124, -65, 42, 32,
+ 28, 29, 12, 20,
+ 119, -26, -212, -201,
+ 373, 251, 141, 103,
+ 36, -52, 66, 18,
+ -6, -95, -196, 5,
+ 98, -85, -108, 218,
+ -164, 20, 356, 172,
+ 37, 266, 23, 112,
+ -24, -99, -92, -178,
+ 29, -278, 388, -60,
+ -220, 300, -13, 154,
+ 191, 15, -37, -110,
+ -153, -150, -114, -7,
+ -94, -31, -62, -177,
+ 4, -70, 35, 453,
+ 147, -247, -328, 101,
+ 20, -114, 147, 108,
+ -119, -109, -102, -238,
+ 55, -102, 173, -89,
+ 129, 138, -330, -160,
+ 485, 154, -59, -170,
+ -20, -34, -261, -40,
+ -129, 77, -84, 69,
+ 83, 160, 169, 63,
+ -516, 30, 336, 52,
+ -0, -52, -124, 158,
+ 19, 197, -10, -375,
+ 405, 285, 114, -395,
+ -47, 196, 62, 87,
+ -106, -65, -75, -69,
+ -13, 34, 99, 59,
+ 83, 98, 44, 0,
+ 24, 18, 17, 70,
+ -22, 194, 208, 144,
+ -79, -15, 32, -104,
+ -28, -105, -186, -212,
+ -228, -79, -76, 51,
+ -71, 72, 118, -34,
+ -3, -171, 5, 2,
+ -108, -125, 62, -58,
+ 58, -121, 73, -466,
+ 92, 63, -94, -78,
+ -76, 212, 36, -225,
+ -71, -354, 152, 143,
+ -79, -246, -51, -31,
+ -6, -270, 240, 210,
+ 30, -157, -231, 74,
+ -146, 88, -273, 156,
+ 92, 56, 71, 2,
+ 318, 164, 32, -110,
+ -35, -41, -95, -106,
+ 11, 132, -68, 55,
+ 123, -83, -149, 212,
+ 132, 0, -194, 55,
+ 206, -108, -353, 289,
+ -195, 1, 233, -22,
+ -60, 20, 26, 68,
+ 166, 27, -58, 130,
+ 112, 107, 27, -165,
+ 115, -93, -37, 38,
+ 83, 483, 65, -229,
+ -13, 157, 85, 50,
+ 136, 10, 32, 83,
+ 82, 55, 5, -9,
+ -52, -78, -81, -51,
+ 40, 18, -127, -224,
+ -41, 53, -210, -113,
+ 24, -17, -187, -89,
+ 8, 121, 83, 77,
+ 91, -74, -35, -112,
+ -161, -173, 102, 132,
+ -125, -61, 103, -260,
+ 52, 166, -32, -156,
+ -87, -56, 60, -70,
+ -124, 242, 114, -251,
+ -166, 201, 127, 28,
+ -11, 23, -80, -115,
+ -20, -51, -348, 340,
+ -34, 133, 13, 92,
+ -124, -136, -120, -26,
+ -6, 17, 28, 21,
+ 120, -168, 160, -35,
+ 115, 28, 9, 7,
+ -56, 39, 156, 256,
+ -18, 1, 277, 82,
+ -70, -144, -88, -13,
+ -59, -157, 8, -134,
+ 21, -40, 58, -21,
+ 194, -276, 97, 279,
+ -56, -140, 125, 57,
+ -184, -204, -70, -2,
+ 128, -202, -78, 230,
+ -23, 161, -102, 1,
+ 1, 180, -31, -86,
+ -167, -57, -60, 27,
+ -13, 99, 108, 111,
+ 76, 69, 34, -21,
+ 53, 38, 34, 78,
+ 73, 219, 51, 15,
+ -72, -103, -207, 30,
+ 213, -14, 31, -94,
+ -40, -144, 67, 4,
+ 105, 59, -240, 25,
+ 244, 69, 58, 23,
+ -24, -5, -15, -133,
+ -71, -67, 181, 29,
+ -45, 121, 96, 51,
+ -72, -53, 56, -153,
+ -27, 85, 183, 211,
+ 105, -34, -46, 43,
+ -72, -93, 36, -128,
+ 29, 111, -95, -156,
+ -179, -235, 21, -39,
+ -71, -33, -61, -252,
+ 230, -131, 157, -21,
+ -85, -28, -123, 80,
+ -160, 63, 47, -6,
+ -49, -96, -19, 17,
+ -58, 17, -0, -13,
+ -170, 25, -35, 59,
+ 10, -31, -413, 81,
+ 62, 18, -164, 245,
+ 92, -165, 42, 26,
+ 126, -248, 193, -55,
+ 16, 39, 14, 50
+};
+
+const SKP_Silk_NLSF_CBS SKP_Silk_NLSF_CB1_16_Stage_info[ NLSF_MSVQ_CB1_16_STAGES ] =
+{
+ { 32, &SKP_Silk_NLSF_MSVQ_CB1_16_Q15[ 16 * 0 ], &SKP_Silk_NLSF_MSVQ_CB1_16_rates_Q5[ 0 ] },
+ { 8, &SKP_Silk_NLSF_MSVQ_CB1_16_Q15[ 16 * 32 ], &SKP_Silk_NLSF_MSVQ_CB1_16_rates_Q5[ 32 ] },
+ { 8, &SKP_Silk_NLSF_MSVQ_CB1_16_Q15[ 16 * 40 ], &SKP_Silk_NLSF_MSVQ_CB1_16_rates_Q5[ 40 ] },
+ { 8, &SKP_Silk_NLSF_MSVQ_CB1_16_Q15[ 16 * 48 ], &SKP_Silk_NLSF_MSVQ_CB1_16_rates_Q5[ 48 ] },
+ { 8, &SKP_Silk_NLSF_MSVQ_CB1_16_Q15[ 16 * 56 ], &SKP_Silk_NLSF_MSVQ_CB1_16_rates_Q5[ 56 ] },
+ { 8, &SKP_Silk_NLSF_MSVQ_CB1_16_Q15[ 16 * 64 ], &SKP_Silk_NLSF_MSVQ_CB1_16_rates_Q5[ 64 ] },
+ { 8, &SKP_Silk_NLSF_MSVQ_CB1_16_Q15[ 16 * 72 ], &SKP_Silk_NLSF_MSVQ_CB1_16_rates_Q5[ 72 ] },
+ { 8, &SKP_Silk_NLSF_MSVQ_CB1_16_Q15[ 16 * 80 ], &SKP_Silk_NLSF_MSVQ_CB1_16_rates_Q5[ 80 ] },
+ { 8, &SKP_Silk_NLSF_MSVQ_CB1_16_Q15[ 16 * 88 ], &SKP_Silk_NLSF_MSVQ_CB1_16_rates_Q5[ 88 ] },
+ { 8, &SKP_Silk_NLSF_MSVQ_CB1_16_Q15[ 16 * 96 ], &SKP_Silk_NLSF_MSVQ_CB1_16_rates_Q5[ 96 ] }
+};
+
+const SKP_Silk_NLSF_CB_struct SKP_Silk_NLSF_CB1_16 =
+{
+ NLSF_MSVQ_CB1_16_STAGES,
+ SKP_Silk_NLSF_CB1_16_Stage_info,
+ SKP_Silk_NLSF_MSVQ_CB1_16_ndelta_min_Q15,
+ SKP_Silk_NLSF_MSVQ_CB1_16_CDF,
+ SKP_Silk_NLSF_MSVQ_CB1_16_CDF_start_ptr,
+ SKP_Silk_NLSF_MSVQ_CB1_16_CDF_middle_idx
+};
+
--- /dev/null
+++ b/src/SKP_Silk_tables_NLSF_CB1_16.h
@@ -1,0 +1,51 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#ifndef SKP_SILK_TABLES_NLSF_CB1_16_H
+#define SKP_SILK_TABLES_NLSF_CB1_16_H
+
+#include "SKP_Silk_define.h"
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#define NLSF_MSVQ_CB1_16_STAGES 10
+#define NLSF_MSVQ_CB1_16_VECTORS 104
+
+/* NLSF codebook entropy coding tables */
+extern const SKP_uint16 SKP_Silk_NLSF_MSVQ_CB1_16_CDF[ NLSF_MSVQ_CB1_16_VECTORS + NLSF_MSVQ_CB1_16_STAGES ];
+extern const SKP_uint16 * const SKP_Silk_NLSF_MSVQ_CB1_16_CDF_start_ptr[ NLSF_MSVQ_CB1_16_STAGES ];
+extern const SKP_int SKP_Silk_NLSF_MSVQ_CB1_16_CDF_middle_idx[ NLSF_MSVQ_CB1_16_STAGES ];
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
--- /dev/null
+++ b/src/SKP_Silk_tables_gain.c
@@ -1,0 +1,77 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_tables.h"
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+const SKP_uint16 SKP_Silk_gain_CDF[ 2 ][ 65 ] =
+{
+{
+ 0, 18, 45, 94, 181, 320, 519, 777,
+ 1093, 1468, 1909, 2417, 2997, 3657, 4404, 5245,
+ 6185, 7228, 8384, 9664, 11069, 12596, 14244, 16022,
+ 17937, 19979, 22121, 24345, 26646, 29021, 31454, 33927,
+ 36438, 38982, 41538, 44068, 46532, 48904, 51160, 53265,
+ 55184, 56904, 58422, 59739, 60858, 61793, 62568, 63210,
+ 63738, 64165, 64504, 64769, 64976, 65133, 65249, 65330,
+ 65386, 65424, 65451, 65471, 65487, 65501, 65513, 65524,
+ 65535
+},
+{
+ 0, 214, 581, 1261, 2376, 3920, 5742, 7632,
+ 9449, 11157, 12780, 14352, 15897, 17427, 18949, 20462,
+ 21957, 23430, 24889, 26342, 27780, 29191, 30575, 31952,
+ 33345, 34763, 36200, 37642, 39083, 40519, 41930, 43291,
+ 44602, 45885, 47154, 48402, 49619, 50805, 51959, 53069,
+ 54127, 55140, 56128, 57101, 58056, 58979, 59859, 60692,
+ 61468, 62177, 62812, 63368, 63845, 64242, 64563, 64818,
+ 65023, 65184, 65306, 65391, 65447, 65482, 65505, 65521,
+ 65535
+}
+};
+
+const SKP_int SKP_Silk_gain_CDF_offset = 32;
+
+
+const SKP_uint16 SKP_Silk_delta_gain_CDF[ 46 ] = {
+ 0, 2358, 3856, 7023, 15376, 53058, 59135, 61555,
+ 62784, 63498, 63949, 64265, 64478, 64647, 64783, 64894,
+ 64986, 65052, 65113, 65169, 65213, 65252, 65284, 65314,
+ 65338, 65359, 65377, 65392, 65403, 65415, 65424, 65432,
+ 65440, 65448, 65455, 65462, 65470, 65477, 65484, 65491,
+ 65499, 65506, 65513, 65521, 65528, 65535
+};
+
+const SKP_int SKP_Silk_delta_gain_CDF_offset = 5;
+
+#ifdef __cplusplus
+}
+#endif
--- /dev/null
+++ b/src/SKP_Silk_tables_other.c
@@ -1,0 +1,151 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_structs.h"
+#include "SKP_Silk_define.h"
+#include "SKP_Silk_tables.h"
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+/* Piece-wise linear mapping from bitrate in kbps to coding quality in dB SNR */
+const SKP_int32 TargetRate_table_NB[ TARGET_RATE_TAB_SZ ] = {
+ 0, 8000, 9000, 11000, 13000, 16000, 22000, 100000
+};
+const SKP_int32 TargetRate_table_MB[ TARGET_RATE_TAB_SZ ] = {
+ 0, 10000, 12000, 14000, 17000, 21000, 28000, 100000
+};
+const SKP_int32 TargetRate_table_WB[ TARGET_RATE_TAB_SZ ] = {
+ 0, 11000, 14000, 17000, 21000, 26000, 36000, 100000
+};
+const SKP_int32 TargetRate_table_SWB[ TARGET_RATE_TAB_SZ ] = {
+ 0, 13000, 16000, 19000, 25000, 32000, 46000, 100000
+};
+const SKP_int32 SNR_table_Q1[ TARGET_RATE_TAB_SZ ] = {
+ 19, 31, 35, 39, 43, 47, 54, 59
+};
+
+const SKP_int32 SNR_table_one_bit_per_sample_Q7[ 4 ] = {
+ 1984, 2240, 2408, 2708
+};
+
+/* Filter coeficicnts for HP filter: 4. Order filter implementad as two biquad filters */
+const SKP_int16 SKP_Silk_SWB_detect_B_HP_Q13[ NB_SOS ][ 3 ] = {
+ //{400, -550, 400}, {400, 130, 400}, {400, 390, 400}
+ {575, -948, 575}, {575, -221, 575}, {575, 104, 575}
+};
+const SKP_int16 SKP_Silk_SWB_detect_A_HP_Q13[ NB_SOS ][ 2 ] = {
+ {14613, 6868}, {12883, 7337}, {11586, 7911}
+ //{14880, 6900}, {14400, 7300}, {13700, 7800}
+};
+
+/* Decoder high-pass filter coefficients for 24 kHz sampling, -6 dB @ 44 Hz */
+const SKP_int16 SKP_Silk_Dec_A_HP_24[ DEC_HP_ORDER ] = {-16220, 8030}; // second order AR coefs, Q13
+const SKP_int16 SKP_Silk_Dec_B_HP_24[ DEC_HP_ORDER + 1 ] = {8000, -16000, 8000}; // second order MA coefs, Q13
+
+/* Decoder high-pass filter coefficients for 16 kHz sampling, - 6 dB @ 46 Hz */
+const SKP_int16 SKP_Silk_Dec_A_HP_16[ DEC_HP_ORDER ] = {-16127, 7940}; // second order AR coefs, Q13
+const SKP_int16 SKP_Silk_Dec_B_HP_16[ DEC_HP_ORDER + 1 ] = {8000, -16000, 8000}; // second order MA coefs, Q13
+
+/* Decoder high-pass filter coefficients for 12 kHz sampling, -6 dB @ 44 Hz */
+const SKP_int16 SKP_Silk_Dec_A_HP_12[ DEC_HP_ORDER ] = {-16043, 7859}; // second order AR coefs, Q13
+const SKP_int16 SKP_Silk_Dec_B_HP_12[ DEC_HP_ORDER + 1 ] = {8000, -16000, 8000}; // second order MA coefs, Q13
+
+/* Decoder high-pass filter coefficients for 8 kHz sampling, -6 dB @ 43 Hz */
+const SKP_int16 SKP_Silk_Dec_A_HP_8[ DEC_HP_ORDER ] = {-15885, 7710}; // second order AR coefs, Q13
+const SKP_int16 SKP_Silk_Dec_B_HP_8[ DEC_HP_ORDER + 1 ] = {8000, -16000, 8000}; // second order MA coefs, Q13
+
+/* table for LSB coding */
+const SKP_uint16 SKP_Silk_lsb_CDF[ 3 ] = {0, 40000, 65535};
+
+/* tables for LTPScale */
+const SKP_uint16 SKP_Silk_LTPscale_CDF[ 4 ] = {0, 32000, 48000, 65535};
+const SKP_int SKP_Silk_LTPscale_offset = 2;
+
+/* tables for VAD flag */
+const SKP_uint16 SKP_Silk_vadflag_CDF[ 3 ] = {0, 22000, 65535}; // 66% for speech, 33% for no speech
+const SKP_int SKP_Silk_vadflag_offset = 1;
+
+/* tables for sampling rate */
+const SKP_int SKP_Silk_SamplingRates_table[ 4 ] = {8, 12, 16, 24};
+const SKP_uint16 SKP_Silk_SamplingRates_CDF[ 5 ] = {0, 16000, 32000, 48000, 65535};
+const SKP_int SKP_Silk_SamplingRates_offset = 2;
+
+/* tables for NLSF interpolation factor */
+const SKP_uint16 SKP_Silk_NLSF_interpolation_factor_CDF[ 6 ] = {0, 3706, 8703, 19226, 30926, 65535};
+const SKP_int SKP_Silk_NLSF_interpolation_factor_offset = 4;
+
+/* Table for frame termination indication */
+const SKP_uint16 SKP_Silk_FrameTermination_CDF[ 5 ] = {0, 20000, 45000, 56000, 65535};
+const SKP_int SKP_Silk_FrameTermination_offset = 2;
+
+const SKP_uint16 SKP_Silk_FrameTermination_v4_CDF[ 6 ] = {0, 13107, 26214, 39321, 52428, 65535};
+const SKP_int SKP_Silk_FrameTermination_v4_offset = 4;
+
+/* Table for random seed */
+const SKP_uint16 SKP_Silk_Seed_CDF[ 5 ] = {0, 16384, 32768, 49152, 65535};
+const SKP_int SKP_Silk_Seed_offset = 2;
+
+/* Quantization offsets */
+const SKP_int16 SKP_Silk_Quantization_Offsets_Q10[ 2 ][ 2 ] = {
+ { OFFSET_VL_Q10, OFFSET_VH_Q10 }, { OFFSET_UVL_Q10, OFFSET_UVH_Q10 }
+};
+
+/* Table for LTPScale */
+const SKP_int16 SKP_Silk_LTPScales_table_Q14[ 3 ] = { 15565, 11469, 8192 };
+
+#if SWITCH_TRANSITION_FILTERING
+/* Elliptic/Cauer filters designed with 0.1 dB passband ripple,
+ 80 dB minimum stopband attenuation, and
+ [0.95 : 0.15 : 0.35] normalized cut off frequencies. */
+
+/* Interpolation points for filter coefficients used in the bandwidth transition smoother */
+const SKP_int32 SKP_Silk_Transition_LP_B_Q28[ TRANSITION_INT_NUM ][ TRANSITION_NB ] =
+{
+{ 250767114, 501534038, 250767114 },
+{ 209867381, 419732057, 209867381 },
+{ 170987846, 341967853, 170987846 },
+{ 131531482, 263046905, 131531482 },
+{ 89306658, 178584282, 89306658 }
+};
+
+/* Interpolation points for filter coefficients used in the bandwidth transition smoother */
+const SKP_int32 SKP_Silk_Transition_LP_A_Q28[ TRANSITION_INT_NUM ][ TRANSITION_NA ] =
+{
+{ 506393414, 239854379 },
+{ 411067935, 169683996 },
+{ 306733530, 116694253 },
+{ 185807084, 77959395 },
+{ 35497197, 57401098 }
+};
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
--- /dev/null
+++ b/src/SKP_Silk_tables_pitch_lag.c
@@ -1,0 +1,199 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_tables.h"
+
+const SKP_uint16 SKP_Silk_pitch_lag_NB_CDF[ 8 * ( PITCH_EST_MAX_LAG_MS - PITCH_EST_MIN_LAG_MS ) + 2 ] = {
+ 0, 194, 395, 608, 841, 1099, 1391, 1724,
+ 2105, 2544, 3047, 3624, 4282, 5027, 5865, 6799,
+ 7833, 8965, 10193, 11510, 12910, 14379, 15905, 17473,
+ 19065, 20664, 22252, 23814, 25335, 26802, 28206, 29541,
+ 30803, 31992, 33110, 34163, 35156, 36098, 36997, 37861,
+ 38698, 39515, 40319, 41115, 41906, 42696, 43485, 44273,
+ 45061, 45847, 46630, 47406, 48175, 48933, 49679, 50411,
+ 51126, 51824, 52502, 53161, 53799, 54416, 55011, 55584,
+ 56136, 56666, 57174, 57661, 58126, 58570, 58993, 59394,
+ 59775, 60134, 60472, 60790, 61087, 61363, 61620, 61856,
+ 62075, 62275, 62458, 62625, 62778, 62918, 63045, 63162,
+ 63269, 63368, 63459, 63544, 63623, 63698, 63769, 63836,
+ 63901, 63963, 64023, 64081, 64138, 64194, 64248, 64301,
+ 64354, 64406, 64457, 64508, 64558, 64608, 64657, 64706,
+ 64754, 64803, 64851, 64899, 64946, 64994, 65041, 65088,
+ 65135, 65181, 65227, 65272, 65317, 65361, 65405, 65449,
+ 65492, 65535
+};
+
+const SKP_int SKP_Silk_pitch_lag_NB_CDF_offset = 43;
+
+const SKP_uint16 SKP_Silk_pitch_contour_NB_CDF[ 12 ] = {
+ 0, 14445, 18587, 25628, 30013, 34859, 40597, 48426,
+ 54460, 59033, 62990, 65535
+};
+
+const SKP_int SKP_Silk_pitch_contour_NB_CDF_offset = 5;
+
+const SKP_uint16 SKP_Silk_pitch_lag_MB_CDF[ 12 * ( PITCH_EST_MAX_LAG_MS - PITCH_EST_MIN_LAG_MS ) + 2 ] = {
+ 0, 132, 266, 402, 542, 686, 838, 997,
+ 1167, 1349, 1546, 1760, 1993, 2248, 2528, 2835,
+ 3173, 3544, 3951, 4397, 4882, 5411, 5984, 6604,
+ 7270, 7984, 8745, 9552, 10405, 11300, 12235, 13206,
+ 14209, 15239, 16289, 17355, 18430, 19507, 20579, 21642,
+ 22688, 23712, 24710, 25677, 26610, 27507, 28366, 29188,
+ 29971, 30717, 31427, 32104, 32751, 33370, 33964, 34537,
+ 35091, 35630, 36157, 36675, 37186, 37692, 38195, 38697,
+ 39199, 39701, 40206, 40713, 41222, 41733, 42247, 42761,
+ 43277, 43793, 44309, 44824, 45336, 45845, 46351, 46851,
+ 47347, 47836, 48319, 48795, 49264, 49724, 50177, 50621,
+ 51057, 51484, 51902, 52312, 52714, 53106, 53490, 53866,
+ 54233, 54592, 54942, 55284, 55618, 55944, 56261, 56571,
+ 56873, 57167, 57453, 57731, 58001, 58263, 58516, 58762,
+ 58998, 59226, 59446, 59656, 59857, 60050, 60233, 60408,
+ 60574, 60732, 60882, 61024, 61159, 61288, 61410, 61526,
+ 61636, 61742, 61843, 61940, 62033, 62123, 62210, 62293,
+ 62374, 62452, 62528, 62602, 62674, 62744, 62812, 62879,
+ 62945, 63009, 63072, 63135, 63196, 63256, 63316, 63375,
+ 63434, 63491, 63549, 63605, 63661, 63717, 63772, 63827,
+ 63881, 63935, 63988, 64041, 64094, 64147, 64199, 64252,
+ 64304, 64356, 64409, 64461, 64513, 64565, 64617, 64669,
+ 64721, 64773, 64824, 64875, 64925, 64975, 65024, 65072,
+ 65121, 65168, 65215, 65262, 65308, 65354, 65399, 65445,
+ 65490, 65535
+};
+
+const SKP_int SKP_Silk_pitch_lag_MB_CDF_offset = 64;
+
+const SKP_uint16 SKP_Silk_pitch_lag_WB_CDF[ 16 * ( PITCH_EST_MAX_LAG_MS - PITCH_EST_MIN_LAG_MS ) + 2 ] = {
+ 0, 106, 213, 321, 429, 539, 651, 766,
+ 884, 1005, 1132, 1264, 1403, 1549, 1705, 1870,
+ 2047, 2236, 2439, 2658, 2893, 3147, 3420, 3714,
+ 4030, 4370, 4736, 5127, 5546, 5993, 6470, 6978,
+ 7516, 8086, 8687, 9320, 9985, 10680, 11405, 12158,
+ 12938, 13744, 14572, 15420, 16286, 17166, 18057, 18955,
+ 19857, 20759, 21657, 22547, 23427, 24293, 25141, 25969,
+ 26774, 27555, 28310, 29037, 29736, 30406, 31048, 31662,
+ 32248, 32808, 33343, 33855, 34345, 34815, 35268, 35704,
+ 36127, 36537, 36938, 37330, 37715, 38095, 38471, 38844,
+ 39216, 39588, 39959, 40332, 40707, 41084, 41463, 41844,
+ 42229, 42615, 43005, 43397, 43791, 44186, 44583, 44982,
+ 45381, 45780, 46179, 46578, 46975, 47371, 47765, 48156,
+ 48545, 48930, 49312, 49690, 50064, 50433, 50798, 51158,
+ 51513, 51862, 52206, 52544, 52877, 53204, 53526, 53842,
+ 54152, 54457, 54756, 55050, 55338, 55621, 55898, 56170,
+ 56436, 56697, 56953, 57204, 57449, 57689, 57924, 58154,
+ 58378, 58598, 58812, 59022, 59226, 59426, 59620, 59810,
+ 59994, 60173, 60348, 60517, 60681, 60840, 60993, 61141,
+ 61284, 61421, 61553, 61679, 61800, 61916, 62026, 62131,
+ 62231, 62326, 62417, 62503, 62585, 62663, 62737, 62807,
+ 62874, 62938, 62999, 63057, 63113, 63166, 63217, 63266,
+ 63314, 63359, 63404, 63446, 63488, 63528, 63567, 63605,
+ 63642, 63678, 63713, 63748, 63781, 63815, 63847, 63879,
+ 63911, 63942, 63973, 64003, 64033, 64063, 64092, 64121,
+ 64150, 64179, 64207, 64235, 64263, 64291, 64319, 64347,
+ 64374, 64401, 64428, 64455, 64481, 64508, 64534, 64560,
+ 64585, 64610, 64635, 64660, 64685, 64710, 64734, 64758,
+ 64782, 64807, 64831, 64855, 64878, 64902, 64926, 64950,
+ 64974, 64998, 65022, 65045, 65069, 65093, 65116, 65139,
+ 65163, 65186, 65209, 65231, 65254, 65276, 65299, 65321,
+ 65343, 65364, 65386, 65408, 65429, 65450, 65471, 65493,
+ 65514, 65535
+};
+
+const SKP_int SKP_Silk_pitch_lag_WB_CDF_offset = 86;
+
+
+const SKP_uint16 SKP_Silk_pitch_lag_SWB_CDF[ 24 * ( PITCH_EST_MAX_LAG_MS - PITCH_EST_MIN_LAG_MS ) + 2 ] = {
+ 0, 253, 505, 757, 1008, 1258, 1507, 1755,
+ 2003, 2249, 2494, 2738, 2982, 3225, 3469, 3713,
+ 3957, 4202, 4449, 4698, 4949, 5203, 5460, 5720,
+ 5983, 6251, 6522, 6798, 7077, 7361, 7650, 7942,
+ 8238, 8539, 8843, 9150, 9461, 9775, 10092, 10411,
+ 10733, 11057, 11383, 11710, 12039, 12370, 12701, 13034,
+ 13368, 13703, 14040, 14377, 14716, 15056, 15398, 15742,
+ 16087, 16435, 16785, 17137, 17492, 17850, 18212, 18577,
+ 18946, 19318, 19695, 20075, 20460, 20849, 21243, 21640,
+ 22041, 22447, 22856, 23269, 23684, 24103, 24524, 24947,
+ 25372, 25798, 26225, 26652, 27079, 27504, 27929, 28352,
+ 28773, 29191, 29606, 30018, 30427, 30831, 31231, 31627,
+ 32018, 32404, 32786, 33163, 33535, 33902, 34264, 34621,
+ 34973, 35320, 35663, 36000, 36333, 36662, 36985, 37304,
+ 37619, 37929, 38234, 38535, 38831, 39122, 39409, 39692,
+ 39970, 40244, 40513, 40778, 41039, 41295, 41548, 41796,
+ 42041, 42282, 42520, 42754, 42985, 43213, 43438, 43660,
+ 43880, 44097, 44312, 44525, 44736, 44945, 45153, 45359,
+ 45565, 45769, 45972, 46175, 46377, 46578, 46780, 46981,
+ 47182, 47383, 47585, 47787, 47989, 48192, 48395, 48599,
+ 48804, 49009, 49215, 49422, 49630, 49839, 50049, 50259,
+ 50470, 50682, 50894, 51107, 51320, 51533, 51747, 51961,
+ 52175, 52388, 52601, 52813, 53025, 53236, 53446, 53655,
+ 53863, 54069, 54274, 54477, 54679, 54879, 55078, 55274,
+ 55469, 55662, 55853, 56042, 56230, 56415, 56598, 56779,
+ 56959, 57136, 57311, 57484, 57654, 57823, 57989, 58152,
+ 58314, 58473, 58629, 58783, 58935, 59084, 59230, 59373,
+ 59514, 59652, 59787, 59919, 60048, 60174, 60297, 60417,
+ 60533, 60647, 60757, 60865, 60969, 61070, 61167, 61262,
+ 61353, 61442, 61527, 61609, 61689, 61765, 61839, 61910,
+ 61979, 62045, 62109, 62170, 62230, 62287, 62343, 62396,
+ 62448, 62498, 62547, 62594, 62640, 62685, 62728, 62770,
+ 62811, 62852, 62891, 62929, 62967, 63004, 63040, 63075,
+ 63110, 63145, 63178, 63212, 63244, 63277, 63308, 63340,
+ 63371, 63402, 63432, 63462, 63491, 63521, 63550, 63578,
+ 63607, 63635, 63663, 63690, 63718, 63744, 63771, 63798,
+ 63824, 63850, 63875, 63900, 63925, 63950, 63975, 63999,
+ 64023, 64046, 64069, 64092, 64115, 64138, 64160, 64182,
+ 64204, 64225, 64247, 64268, 64289, 64310, 64330, 64351,
+ 64371, 64391, 64411, 64431, 64450, 64470, 64489, 64508,
+ 64527, 64545, 64564, 64582, 64600, 64617, 64635, 64652,
+ 64669, 64686, 64702, 64719, 64735, 64750, 64766, 64782,
+ 64797, 64812, 64827, 64842, 64857, 64872, 64886, 64901,
+ 64915, 64930, 64944, 64959, 64974, 64988, 65003, 65018,
+ 65033, 65048, 65063, 65078, 65094, 65109, 65125, 65141,
+ 65157, 65172, 65188, 65204, 65220, 65236, 65252, 65268,
+ 65283, 65299, 65314, 65330, 65345, 65360, 65375, 65390,
+ 65405, 65419, 65434, 65449, 65463, 65477, 65492, 65506,
+ 65521, 65535
+};
+
+const SKP_int SKP_Silk_pitch_lag_SWB_CDF_offset = 128;
+
+
+const SKP_uint16 SKP_Silk_pitch_contour_CDF[ 35 ] = {
+ 0, 372, 843, 1315, 1836, 2644, 3576, 4719,
+ 6088, 7621, 9396, 11509, 14245, 17618, 20777, 24294,
+ 27992, 33116, 40100, 44329, 47558, 50679, 53130, 55557,
+ 57510, 59022, 60285, 61345, 62316, 63140, 63762, 64321,
+ 64729, 65099, 65535
+};
+
+const SKP_int SKP_Silk_pitch_contour_CDF_offset = 17;
+
+const SKP_uint16 SKP_Silk_pitch_delta_CDF[23] = {
+ 0, 343, 740, 1249, 1889, 2733, 3861, 5396,
+ 7552, 10890, 16053, 24152, 30220, 34680, 37973, 40405,
+ 42243, 43708, 44823, 45773, 46462, 47055, 65535
+};
+
+const SKP_int SKP_Silk_pitch_delta_CDF_offset = 11;
--- /dev/null
+++ b/src/SKP_Silk_tables_pulses_per_block.c
@@ -1,0 +1,235 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_tables.h"
+
+const SKP_int SKP_Silk_max_pulses_table[ 4 ] = {
+ 6, 8, 12, 18
+};
+
+const SKP_uint16 SKP_Silk_pulses_per_block_CDF[ 10 ][ 21 ] =
+{
+{
+ 0, 47113, 61501, 64590, 65125, 65277, 65352, 65407,
+ 65450, 65474, 65488, 65501, 65508, 65514, 65516, 65520,
+ 65521, 65523, 65524, 65526, 65535
+},
+{
+ 0, 26368, 47760, 58803, 63085, 64567, 65113, 65333,
+ 65424, 65474, 65498, 65511, 65517, 65520, 65523, 65525,
+ 65526, 65528, 65529, 65530, 65535
+},
+{
+ 0, 9601, 28014, 45877, 57210, 62560, 64611, 65260,
+ 65447, 65500, 65511, 65519, 65521, 65525, 65526, 65529,
+ 65530, 65531, 65532, 65534, 65535
+},
+{
+ 0, 3351, 12462, 25972, 39782, 50686, 57644, 61525,
+ 63521, 64506, 65009, 65255, 65375, 65441, 65471, 65488,
+ 65497, 65505, 65509, 65512, 65535
+},
+{
+ 0, 488, 2944, 9295, 19712, 32160, 43976, 53121,
+ 59144, 62518, 64213, 65016, 65346, 65470, 65511, 65515,
+ 65525, 65529, 65531, 65534, 65535
+},
+{
+ 0, 17013, 30405, 40812, 48142, 53466, 57166, 59845,
+ 61650, 62873, 63684, 64223, 64575, 64811, 64959, 65051,
+ 65111, 65143, 65165, 65183, 65535
+},
+{
+ 0, 2994, 8323, 15845, 24196, 32300, 39340, 45140,
+ 49813, 53474, 56349, 58518, 60167, 61397, 62313, 62969,
+ 63410, 63715, 63906, 64056, 65535
+},
+{
+ 0, 88, 721, 2795, 7542, 14888, 24420, 34593,
+ 43912, 51484, 56962, 60558, 62760, 64037, 64716, 65069,
+ 65262, 65358, 65398, 65420, 65535
+},
+{
+ 0, 287, 789, 2064, 4398, 8174, 13534, 20151,
+ 27347, 34533, 41295, 47242, 52070, 55772, 58458, 60381,
+ 61679, 62533, 63109, 63519, 65535
+},
+{
+ 0, 1, 3, 91, 4521, 14708, 28329, 41955,
+ 52116, 58375, 61729, 63534, 64459, 64924, 65092, 65164,
+ 65182, 65198, 65203, 65211, 65535
+}
+};
+
+const SKP_int SKP_Silk_pulses_per_block_CDF_offset = 6;
+
+
+const SKP_int16 SKP_Silk_pulses_per_block_BITS_Q6[ 9 ][ 20 ] =
+{
+{
+ 30, 140, 282, 444, 560, 625, 654, 677,
+ 731, 780, 787, 844, 859, 960, 896, 1024,
+ 960, 1024, 960, 821
+},
+{
+ 84, 103, 164, 252, 350, 442, 526, 607,
+ 663, 731, 787, 859, 923, 923, 960, 1024,
+ 960, 1024, 1024, 875
+},
+{
+ 177, 117, 120, 162, 231, 320, 426, 541,
+ 657, 803, 832, 960, 896, 1024, 923, 1024,
+ 1024, 1024, 960, 1024
+},
+{
+ 275, 182, 146, 144, 166, 207, 261, 322,
+ 388, 450, 516, 582, 637, 710, 762, 821,
+ 832, 896, 923, 734
+},
+{
+ 452, 303, 216, 170, 153, 158, 182, 220,
+ 274, 337, 406, 489, 579, 681, 896, 811,
+ 896, 960, 923, 1024
+},
+{
+ 125, 147, 170, 202, 232, 265, 295, 332,
+ 368, 406, 443, 483, 520, 563, 606, 646,
+ 704, 739, 757, 483
+},
+{
+ 285, 232, 200, 190, 193, 206, 224, 244,
+ 266, 289, 315, 340, 367, 394, 425, 462,
+ 496, 539, 561, 350
+},
+{
+ 611, 428, 319, 242, 202, 178, 172, 180,
+ 199, 229, 268, 313, 364, 422, 482, 538,
+ 603, 683, 739, 586
+},
+{
+ 501, 450, 364, 308, 264, 231, 212, 204,
+ 204, 210, 222, 241, 265, 295, 326, 362,
+ 401, 437, 469, 321
+}
+};
+
+const SKP_uint16 SKP_Silk_rate_levels_CDF[ 2 ][ 10 ] =
+{
+{
+ 0, 2005, 12717, 20281, 31328, 36234, 45816, 57753,
+ 63104, 65535
+},
+{
+ 0, 8553, 23489, 36031, 46295, 53519, 56519, 59151,
+ 64185, 65535
+}
+};
+
+const SKP_int SKP_Silk_rate_levels_CDF_offset = 4;
+
+
+const SKP_int16 SKP_Silk_rate_levels_BITS_Q6[ 2 ][ 9 ] =
+{
+{
+ 322, 167, 199, 164, 239, 178, 157, 231,
+ 304
+},
+{
+ 188, 137, 153, 171, 204, 285, 297, 237,
+ 358
+}
+};
+
+const SKP_uint16 SKP_Silk_shell_code_table0[ 33 ] = {
+ 0, 32748, 65535, 0, 9505, 56230, 65535, 0,
+ 4093, 32204, 61720, 65535, 0, 2285, 16207, 48750,
+ 63424, 65535, 0, 1709, 9446, 32026, 55752, 63876,
+ 65535, 0, 1623, 6986, 21845, 45381, 59147, 64186,
+ 65535
+};
+
+const SKP_uint16 SKP_Silk_shell_code_table1[ 52 ] = {
+ 0, 32691, 65535, 0, 12782, 52752, 65535, 0,
+ 4847, 32665, 60899, 65535, 0, 2500, 17305, 47989,
+ 63369, 65535, 0, 1843, 10329, 32419, 55433, 64277,
+ 65535, 0, 1485, 7062, 21465, 43414, 59079, 64623,
+ 65535, 0, 0, 4841, 14797, 31799, 49667, 61309,
+ 65535, 65535, 0, 0, 0, 8032, 21695, 41078,
+ 56317, 65535, 65535, 65535
+};
+
+const SKP_uint16 SKP_Silk_shell_code_table2[ 102 ] = {
+ 0, 32615, 65535, 0, 14447, 50912, 65535, 0,
+ 6301, 32587, 59361, 65535, 0, 3038, 18640, 46809,
+ 62852, 65535, 0, 1746, 10524, 32509, 55273, 64278,
+ 65535, 0, 1234, 6360, 21259, 43712, 59651, 64805,
+ 65535, 0, 1020, 4461, 14030, 32286, 51249, 61904,
+ 65100, 65535, 0, 851, 3435, 10006, 23241, 40797,
+ 55444, 63009, 65252, 65535, 0, 0, 2075, 7137,
+ 17119, 31499, 46982, 58723, 63976, 65535, 65535, 0,
+ 0, 0, 3820, 11572, 23038, 37789, 51969, 61243,
+ 65535, 65535, 65535, 0, 0, 0, 0, 6882,
+ 16828, 30444, 44844, 57365, 65535, 65535, 65535, 65535,
+ 0, 0, 0, 0, 0, 10093, 22963, 38779,
+ 54426, 65535, 65535, 65535, 65535, 65535
+};
+
+const SKP_uint16 SKP_Silk_shell_code_table3[ 207 ] = {
+ 0, 32324, 65535, 0, 15328, 49505, 65535, 0,
+ 7474, 32344, 57955, 65535, 0, 3944, 19450, 45364,
+ 61873, 65535, 0, 2338, 11698, 32435, 53915, 63734,
+ 65535, 0, 1506, 7074, 21778, 42972, 58861, 64590,
+ 65535, 0, 1027, 4490, 14383, 32264, 50980, 61712,
+ 65043, 65535, 0, 760, 3022, 9696, 23264, 41465,
+ 56181, 63253, 65251, 65535, 0, 579, 2256, 6873,
+ 16661, 31951, 48250, 59403, 64198, 65360, 65535, 0,
+ 464, 1783, 5181, 12269, 24247, 39877, 53490, 61502,
+ 64591, 65410, 65535, 0, 366, 1332, 3880, 9273,
+ 18585, 32014, 45928, 56659, 62616, 64899, 65483, 65535,
+ 0, 286, 1065, 3089, 6969, 14148, 24859, 38274,
+ 50715, 59078, 63448, 65091, 65481, 65535, 0, 0,
+ 482, 2010, 5302, 10408, 18988, 30698, 43634, 54233,
+ 60828, 64119, 65288, 65535, 65535, 0, 0, 0,
+ 1006, 3531, 7857, 14832, 24543, 36272, 47547, 56883,
+ 62327, 64746, 65535, 65535, 65535, 0, 0, 0,
+ 0, 1863, 4950, 10730, 19284, 29397, 41382, 52335,
+ 59755, 63834, 65535, 65535, 65535, 65535, 0, 0,
+ 0, 0, 0, 2513, 7290, 14487, 24275, 35312,
+ 46240, 55841, 62007, 65535, 65535, 65535, 65535, 65535,
+ 0, 0, 0, 0, 0, 0, 3606, 9573,
+ 18764, 28667, 40220, 51290, 59924, 65535, 65535, 65535,
+ 65535, 65535, 65535, 0, 0, 0, 0, 0,
+ 0, 0, 4879, 13091, 23376, 36061, 49395, 59315,
+ 65535, 65535, 65535, 65535, 65535, 65535, 65535
+};
+
+const SKP_uint16 SKP_Silk_shell_code_table_offsets[ 19 ] = {
+ 0, 0, 3, 7, 12, 18, 25, 33,
+ 42, 52, 63, 75, 88, 102, 117, 133,
+ 150, 168, 187
+};
+
--- /dev/null
+++ b/src/SKP_Silk_tables_sign.c
@@ -1,0 +1,141 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_tables.h"
+
+const SKP_uint16 SKP_Silk_sign_CDF[ 36 ][ 3 ] =
+{
+{
+ 0, 37840, 65535
+},
+{
+ 0, 36944, 65535
+},
+{
+ 0, 36251, 65535
+},
+{
+ 0, 35304, 65535
+},
+{
+ 0, 34715, 65535
+},
+{
+ 0, 35503, 65535
+},
+{
+ 0, 34529, 65535
+},
+{
+ 0, 34296, 65535
+},
+{
+ 0, 34016, 65535
+},
+{
+ 0, 47659, 65535
+},
+{
+ 0, 44945, 65535
+},
+{
+ 0, 42503, 65535
+},
+{
+ 0, 40235, 65535
+},
+{
+ 0, 38569, 65535
+},
+{
+ 0, 40254, 65535
+},
+{
+ 0, 37851, 65535
+},
+{
+ 0, 37243, 65535
+},
+{
+ 0, 36595, 65535
+},
+{
+ 0, 43410, 65535
+},
+{
+ 0, 44121, 65535
+},
+{
+ 0, 43127, 65535
+},
+{
+ 0, 40978, 65535
+},
+{
+ 0, 38845, 65535
+},
+{
+ 0, 40433, 65535
+},
+{
+ 0, 38252, 65535
+},
+{
+ 0, 37795, 65535
+},
+{
+ 0, 36637, 65535
+},
+{
+ 0, 59159, 65535
+},
+{
+ 0, 55630, 65535
+},
+{
+ 0, 51806, 65535
+},
+{
+ 0, 48073, 65535
+},
+{
+ 0, 45036, 65535
+},
+{
+ 0, 48416, 65535
+},
+{
+ 0, 43857, 65535
+},
+{
+ 0, 42678, 65535
+},
+{
+ 0, 41146, 65535
+}
+};
+
--- /dev/null
+++ b/src/SKP_Silk_tables_type_offset.c
@@ -1,0 +1,52 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "SKP_Silk_tables.h"
+
+const SKP_uint16 SKP_Silk_type_offset_CDF[ 5 ] = {
+ 0, 37522, 41030, 44212, 65535
+};
+
+const SKP_int SKP_Silk_type_offset_CDF_offset = 2;
+
+
+const SKP_uint16 SKP_Silk_type_offset_joint_CDF[ 4 ][ 5 ] =
+{
+{
+ 0, 57686, 61230, 62358, 65535
+},
+{
+ 0, 18346, 40067, 43659, 65535
+},
+{
+ 0, 22694, 24279, 35507, 65535
+},
+{
+ 0, 6067, 7215, 13010, 65535
+}
+};
+
--- /dev/null
+++ b/src/Silk_FIX.2008.vcproj
@@ -1,0 +1,837 @@
+<?xml version="1.0" encoding="Windows-1252"?>
+<VisualStudioProject
+ ProjectType="Visual C++"
+ Version="9.00"
+ Name="Silk_FIX"
+ ProjectGUID="{56B91D01-9150-4BBF-AFA1-5B68AB991B76}"
+ RootNamespace="Silk"
+ Keyword="Win32Proj"
+ TargetFrameworkVersion="131072"
+ >
+ <Platforms>
+ <Platform
+ Name="Win32"
+ />
+ <Platform
+ Name="x64"
+ />
+ </Platforms>
+ <ToolFiles>
+ </ToolFiles>
+ <Configurations>
+ <Configuration
+ Name="Debug|Win32"
+ OutputDirectory="$(ConfigurationName)"
+ IntermediateDirectory="$(ConfigurationName)"
+ ConfigurationType="4"
+ CharacterSet="1"
+ >
+ <Tool
+ Name="VCPreBuildEventTool"
+ />
+ <Tool
+ Name="VCCustomBuildTool"
+ />
+ <Tool
+ Name="VCXMLDataGeneratorTool"
+ />
+ <Tool
+ Name="VCWebServiceProxyGeneratorTool"
+ />
+ <Tool
+ Name="VCMIDLTool"
+ />
+ <Tool
+ Name="VCCLCompilerTool"
+ Optimization="0"
+ FavorSizeOrSpeed="0"
+ AdditionalIncludeDirectories="../interface"
+ PreprocessorDefinitions="WIN32;_DEBUG;_LIB;"
+ MinimalRebuild="true"
+ BasicRuntimeChecks="3"
+ RuntimeLibrary="1"
+ FloatingPointModel="2"
+ UsePrecompiledHeader="0"
+ WarningLevel="3"
+ Detect64BitPortabilityProblems="true"
+ DebugInformationFormat="4"
+ />
+ <Tool
+ Name="VCManagedResourceCompilerTool"
+ />
+ <Tool
+ Name="VCResourceCompilerTool"
+ />
+ <Tool
+ Name="VCPreLinkEventTool"
+ />
+ <Tool
+ Name="VCLibrarianTool"
+ />
+ <Tool
+ Name="VCALinkTool"
+ />
+ <Tool
+ Name="VCXDCMakeTool"
+ />
+ <Tool
+ Name="VCBscMakeTool"
+ />
+ <Tool
+ Name="VCFxCopTool"
+ />
+ <Tool
+ Name="VCPostBuildEventTool"
+ CommandLine=""
+ />
+ </Configuration>
+ <Configuration
+ Name="Release|Win32"
+ OutputDirectory="$(ConfigurationName)"
+ IntermediateDirectory="$(ConfigurationName)"
+ ConfigurationType="4"
+ CharacterSet="1"
+ WholeProgramOptimization="1"
+ >
+ <Tool
+ Name="VCPreBuildEventTool"
+ />
+ <Tool
+ Name="VCCustomBuildTool"
+ />
+ <Tool
+ Name="VCXMLDataGeneratorTool"
+ />
+ <Tool
+ Name="VCWebServiceProxyGeneratorTool"
+ />
+ <Tool
+ Name="VCMIDLTool"
+ />
+ <Tool
+ Name="VCCLCompilerTool"
+ Optimization="2"
+ InlineFunctionExpansion="0"
+ FavorSizeOrSpeed="0"
+ AdditionalIncludeDirectories="../interface"
+ PreprocessorDefinitions="WIN32;NDEBUG;_LIB"
+ GeneratePreprocessedFile="0"
+ RuntimeLibrary="0"
+ FloatingPointModel="2"
+ UsePrecompiledHeader="0"
+ WarningLevel="3"
+ Detect64BitPortabilityProblems="true"
+ DebugInformationFormat="3"
+ />
+ <Tool
+ Name="VCManagedResourceCompilerTool"
+ />
+ <Tool
+ Name="VCResourceCompilerTool"
+ />
+ <Tool
+ Name="VCPreLinkEventTool"
+ />
+ <Tool
+ Name="VCLibrarianTool"
+ />
+ <Tool
+ Name="VCALinkTool"
+ />
+ <Tool
+ Name="VCXDCMakeTool"
+ />
+ <Tool
+ Name="VCBscMakeTool"
+ />
+ <Tool
+ Name="VCFxCopTool"
+ />
+ <Tool
+ Name="VCPostBuildEventTool"
+ CommandLine=""
+ />
+ </Configuration>
+ <Configuration
+ Name="Debug|x64"
+ OutputDirectory="$(PlatformName)\$(ConfigurationName)"
+ IntermediateDirectory="$(PlatformName)\$(ConfigurationName)"
+ ConfigurationType="4"
+ CharacterSet="1"
+ >
+ <Tool
+ Name="VCPreBuildEventTool"
+ />
+ <Tool
+ Name="VCCustomBuildTool"
+ />
+ <Tool
+ Name="VCXMLDataGeneratorTool"
+ />
+ <Tool
+ Name="VCWebServiceProxyGeneratorTool"
+ />
+ <Tool
+ Name="VCMIDLTool"
+ TargetEnvironment="3"
+ />
+ <Tool
+ Name="VCCLCompilerTool"
+ Optimization="0"
+ FavorSizeOrSpeed="0"
+ AdditionalIncludeDirectories="../interface"
+ PreprocessorDefinitions="WIN32;_DEBUG;_LIB;"
+ MinimalRebuild="true"
+ BasicRuntimeChecks="3"
+ RuntimeLibrary="1"
+ FloatingPointModel="2"
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--- /dev/null
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@@ -1,0 +1,700 @@
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+ </File>
+ <File
+ RelativePath=".\SKP_Silk_tables_NLSF_CB0_10.c"
+ >
+ </File>
+ <File
+ RelativePath=".\SKP_Silk_tables_NLSF_CB0_16.c"
+ >
+ </File>
+ <File
+ RelativePath=".\SKP_Silk_tables_NLSF_CB1_10.c"
+ >
+ </File>
+ <File
+ RelativePath=".\SKP_Silk_tables_NLSF_CB1_16.c"
+ >
+ </File>
+ <File
+ RelativePath=".\SKP_Silk_tables_other.c"
+ >
+ </File>
+ <File
+ RelativePath=".\SKP_Silk_tables_pitch_lag.c"
+ >
+ </File>
+ <File
+ RelativePath=".\SKP_Silk_tables_pulses_per_block.c"
+ >
+ </File>
+ <File
+ RelativePath=".\SKP_Silk_tables_sign.c"
+ >
+ </File>
+ <File
+ RelativePath=".\SKP_Silk_tables_type_offset.c"
+ >
+ </File>
+ <File
+ RelativePath=".\SKP_Silk_VAD.c"
+ >
+ </File>
+ <File
+ RelativePath=".\SKP_Silk_VQ_nearest_neighbor_FIX.c"
+ >
+ </File>
+ </Filter>
+ <Filter
+ Name="Header Files"
+ Filter="h;hpp;hxx;hm;inl;inc;xsd"
+ UniqueIdentifier="{93995380-89BD-4b04-88EB-625FBE52EBFB}"
+ >
+ <File
+ RelativePath="..\interface\SKP_Silk_control.h"
+ >
+ </File>
+ <File
+ RelativePath=".\SKP_Silk_define.h"
+ >
+ </File>
+ <File
+ RelativePath=".\SKP_Silk_define_FIX.h"
+ >
+ </File>
+ <File
+ RelativePath="..\interface\SKP_Silk_errors.h"
+ >
+ </File>
+ <File
+ RelativePath=".\SKP_Silk_Inlines.h"
+ >
+ </File>
+ <File
+ RelativePath=".\SKP_Silk_macros.h"
+ >
+ </File>
+ <File
+ RelativePath=".\SKP_Silk_main.h"
+ >
+ </File>
+ <File
+ RelativePath=".\SKP_Silk_main_FIX.h"
+ >
+ </File>
+ <File
+ RelativePath=".\SKP_Silk_perceptual_parameters_FIX.h"
+ >
+ </File>
+ <File
+ RelativePath=".\SKP_Silk_pitch_est_defines.h"
+ >
+ </File>
+ <File
+ RelativePath=".\SKP_Silk_PLC.h"
+ >
+ </File>
+ <File
+ RelativePath=".\SKP_Silk_resample_rom.h"
+ >
+ </File>
+ <File
+ RelativePath="..\interface\SKP_Silk_SDK_API.h"
+ >
+ </File>
+ <File
+ RelativePath=".\SKP_Silk_SigProc_FIX.h"
+ >
+ </File>
+ <File
+ RelativePath=".\SKP_Silk_structs.h"
+ >
+ </File>
+ <File
+ RelativePath=".\SKP_Silk_structs_FIX.h"
+ >
+ </File>
+ <File
+ RelativePath=".\SKP_Silk_tables.h"
+ >
+ </File>
+ <File
+ RelativePath="..\interface\SKP_Silk_typedef.h"
+ >
+ </File>
+ </Filter>
+ </Files>
+ <Globals>
+ </Globals>
+</VisualStudioProject>
--- /dev/null
+++ b/test/Dec_SDK.vcproj
@@ -1,0 +1,217 @@
+<?xml version="1.0" encoding="Windows-1252"?>
+<VisualStudioProject
+ ProjectType="Visual C++"
+ Version="8,00"
+ Name="Dec_SDK"
+ ProjectGUID="{82685D7F-0589-42BD-877C-31A952D53A8E}"
+ RootNamespace="Test"
+ Keyword="Win32Proj"
+ >
+ <Platforms>
+ <Platform
+ Name="Win32"
+ />
+ </Platforms>
+ <ToolFiles>
+ </ToolFiles>
+ <Configurations>
+ <Configuration
+ Name="Debug|Win32"
+ OutputDirectory="$(SolutionDir)"
+ IntermediateDirectory="$(ConfigurationName)_Dec"
+ ConfigurationType="1"
+ CharacterSet="1"
+ >
+ <Tool
+ Name="VCPreBuildEventTool"
+ />
+ <Tool
+ Name="VCCustomBuildTool"
+ />
+ <Tool
+ Name="VCXMLDataGeneratorTool"
+ />
+ <Tool
+ Name="VCWebServiceProxyGeneratorTool"
+ />
+ <Tool
+ Name="VCMIDLTool"
+ />
+ <Tool
+ Name="VCCLCompilerTool"
+ Optimization="0"
+ AdditionalIncludeDirectories="../interface;../src"
+ PreprocessorDefinitions="WIN32;_DEBUG;_CONSOLE;COMPILE_SDK"
+ MinimalRebuild="true"
+ BasicRuntimeChecks="3"
+ RuntimeLibrary="1"
+ UsePrecompiledHeader="0"
+ WarningLevel="3"
+ Detect64BitPortabilityProblems="true"
+ DebugInformationFormat="4"
+ />
+ <Tool
+ Name="VCManagedResourceCompilerTool"
+ />
+ <Tool
+ Name="VCResourceCompilerTool"
+ />
+ <Tool
+ Name="VCPreLinkEventTool"
+ />
+ <Tool
+ Name="VCLinkerTool"
+ OutputFile="$(OutDir)\Decoder_debug.exe"
+ LinkIncremental="2"
+ AdditionalLibraryDirectories=""
+ IgnoreAllDefaultLibraries="false"
+ IgnoreDefaultLibraryNames=""
+ GenerateDebugInformation="true"
+ ProgramDatabaseFile="$(TargetDir)$(TargetName).pdb"
+ SubSystem="1"
+ TargetMachine="1"
+ />
+ <Tool
+ Name="VCALinkTool"
+ />
+ <Tool
+ Name="VCManifestTool"
+ />
+ <Tool
+ Name="VCXDCMakeTool"
+ />
+ <Tool
+ Name="VCBscMakeTool"
+ />
+ <Tool
+ Name="VCFxCopTool"
+ />
+ <Tool
+ Name="VCAppVerifierTool"
+ />
+ <Tool
+ Name="VCWebDeploymentTool"
+ />
+ <Tool
+ Name="VCPostBuildEventTool"
+ />
+ </Configuration>
+ <Configuration
+ Name="Release|Win32"
+ OutputDirectory="$(SolutionDir)"
+ IntermediateDirectory="$(ConfigurationName)_Dec"
+ ConfigurationType="1"
+ CharacterSet="1"
+ WholeProgramOptimization="1"
+ >
+ <Tool
+ Name="VCPreBuildEventTool"
+ />
+ <Tool
+ Name="VCCustomBuildTool"
+ />
+ <Tool
+ Name="VCXMLDataGeneratorTool"
+ />
+ <Tool
+ Name="VCWebServiceProxyGeneratorTool"
+ />
+ <Tool
+ Name="VCMIDLTool"
+ />
+ <Tool
+ Name="VCCLCompilerTool"
+ AdditionalIncludeDirectories="../interface;../src"
+ PreprocessorDefinitions="WIN32;NDEBUG;_CONSOLE;COMPILE_SDK"
+ RuntimeLibrary="0"
+ FloatingPointModel="2"
+ UsePrecompiledHeader="0"
+ WarningLevel="3"
+ Detect64BitPortabilityProblems="true"
+ DebugInformationFormat="3"
+ />
+ <Tool
+ Name="VCManagedResourceCompilerTool"
+ />
+ <Tool
+ Name="VCResourceCompilerTool"
+ />
+ <Tool
+ Name="VCPreLinkEventTool"
+ />
+ <Tool
+ Name="VCLinkerTool"
+ AdditionalOptions="/fixed:no"
+ OutputFile="$(OutDir)\Decoder.exe"
+ LinkIncremental="1"
+ AdditionalLibraryDirectories=""
+ IgnoreDefaultLibraryNames=""
+ GenerateDebugInformation="false"
+ SubSystem="1"
+ OptimizeReferences="2"
+ EnableCOMDATFolding="2"
+ TargetMachine="1"
+ />
+ <Tool
+ Name="VCALinkTool"
+ />
+ <Tool
+ Name="VCManifestTool"
+ />
+ <Tool
+ Name="VCXDCMakeTool"
+ />
+ <Tool
+ Name="VCBscMakeTool"
+ />
+ <Tool
+ Name="VCFxCopTool"
+ />
+ <Tool
+ Name="VCAppVerifierTool"
+ />
+ <Tool
+ Name="VCWebDeploymentTool"
+ />
+ <Tool
+ Name="VCPostBuildEventTool"
+ />
+ </Configuration>
+ </Configurations>
+ <References>
+ </References>
+ <Files>
+ <Filter
+ Name="Source Files"
+ Filter="cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx"
+ UniqueIdentifier="{4FC737F1-C7A5-4376-A066-2A32D752A2FF}"
+ >
+ <File
+ RelativePath=".\Decoder.c"
+ >
+ </File>
+ </Filter>
+ <Filter
+ Name="interface"
+ >
+ <File
+ RelativePath="..\interface\SKP_Silk_control.h"
+ >
+ </File>
+ <File
+ RelativePath="..\interface\SKP_Silk_errors.h"
+ >
+ </File>
+ <File
+ RelativePath="..\interface\SKP_Silk_SDK_API.h"
+ >
+ </File>
+ <File
+ RelativePath="..\interface\SKP_Silk_typedef.h"
+ >
+ </File>
+ </Filter>
+ </Files>
+ <Globals>
+ </Globals>
+</VisualStudioProject>
--- /dev/null
+++ b/test/Decoder.c
@@ -1,0 +1,363 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+/*****************************/
+/* Silk decoder test program */
+/*****************************/
+
+#ifdef _WIN32
+#define _CRT_SECURE_NO_DEPRECATE 1
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "SKP_Silk_SDK_API.h"
+#include "SKP_Silk_SigProc_FIX.h"
+
+/* Define codec specific settings should be moved to h file */
+#define MAX_BYTES_PER_FRAME 1024
+#define MAX_INPUT_FRAMES 5
+#define MAX_FRAME_LENGTH 480
+#define MAX_LBRR_DELAY 2
+
+static void print_usage(char* argv[]) {
+ printf( "\nusage: %s in.bit out.pcm [settings]\n", argv[ 0 ] );
+ printf( "\nin.bit : Bitstream input to decoder" );
+ printf( "\nout.pcm : Speech output from decoder" );
+ printf( "\n settings:" );
+ printf( "\n-fs <kHz> : Sampling rate of output signal in kHz; default: 24" );
+ printf( "\n-loss <perc> : Simulated packet loss percentage (0-100); default: 0" );
+ printf( "\n" );
+}
+
+int main( int argc, char* argv[] )
+{
+ size_t counter;
+ SKP_int args, totPackets, i, k;
+ SKP_int16 ret, len, tot_len;
+ SKP_int16 nBytes;
+ SKP_uint8 payload[ MAX_BYTES_PER_FRAME * MAX_INPUT_FRAMES * ( MAX_LBRR_DELAY + 1 ) ];
+ SKP_uint8 FECpayload[ MAX_BYTES_PER_FRAME * MAX_INPUT_FRAMES ], *payloadPtr;
+ SKP_uint8 *payloadEnd = NULL, *payloadToDec = NULL;
+ SKP_int16 nBytesFEC;
+ SKP_int16 nBytesPerPacket[ MAX_LBRR_DELAY + 1 ], totBytes;
+ SKP_int16 out[ ( MAX_FRAME_LENGTH << 1 ) * MAX_INPUT_FRAMES ], *outPtr;
+ char speechOutFileName[ 150 ], bitInFileName[ 150 ];
+ FILE *bitInFile, *speechOutFile;
+ SKP_int Fs_kHz = 0;
+ SKP_int32 decSizeBytes;
+ void *psDec;
+ float loss_prob;
+ SKP_int frames, lost, quiet;
+ SKP_SILK_SDK_DecControlStruct DecControl;
+
+ if( argc < 3 ) {
+ print_usage( argv );
+ exit( 0 );
+ }
+
+ /* default settings */
+ quiet = 0;
+ loss_prob = 0.0f;
+
+ /* get arguments */
+ args = 1;
+ strcpy( bitInFileName, argv[ args ] );
+ args++;
+ strcpy( speechOutFileName, argv[ args ] );
+ args++;
+ while( args < argc ) {
+ if( SKP_STR_CASEINSENSITIVE_COMPARE( argv[ args ], "-loss" ) == 0 ) {
+ sscanf( argv[ args + 1 ], "%f", &loss_prob );
+ args += 2;
+ } else if( SKP_STR_CASEINSENSITIVE_COMPARE( argv[ args ], "-fs" ) == 0 ) {
+ sscanf( argv[ args + 1 ], "%d", &Fs_kHz );
+ args += 2;
+ } else if( SKP_STR_CASEINSENSITIVE_COMPARE( argv[ args ], "-quiet" ) == 0 ) {
+ quiet = 1;
+ args++;
+ } else {
+ printf( "Error: unrecognized setting: %s\n\n", argv[ args ] );
+ print_usage( argv );
+ exit( 0 );
+ }
+ }
+
+ if( !quiet ) {
+ printf("******************* Silk Decoder v %s ****************\n", SKP_Silk_SDK_get_version());
+ printf("******************* Compiled for %d bit cpu ********* \n", (int)sizeof(void*) * 8 );
+ printf( "Input: %s\n", bitInFileName );
+ printf( "Output: %s\n", speechOutFileName );
+ }
+
+ /* Open files */
+ bitInFile = fopen( bitInFileName, "rb" );
+ if( bitInFile == NULL ) {
+ printf( "Error: could not open input file %s\n", bitInFileName );
+ exit( 0 );
+ }
+ speechOutFile = fopen( speechOutFileName, "wb" );
+ if( speechOutFile == NULL ) {
+ printf( "Error: could not open output file %s\n", speechOutFileName );
+ exit( 0 );
+ }
+
+ /* Set the samplingrate that is requested for the output */
+ if( Fs_kHz == 0 ) {
+ DecControl.sampleRate = 24000;
+ } else {
+ DecControl.sampleRate = Fs_kHz * 1000;
+ }
+
+ /* Create decoder */
+ ret = SKP_Silk_SDK_Get_Decoder_Size( &decSizeBytes );
+ if( ret ) {
+ printf( "\nSKP_Silk_SDK_Get_Decoder_Size returned %d", ret );
+ }
+ psDec = malloc( decSizeBytes );
+
+ /* Reset decoder */
+ ret = SKP_Silk_SDK_InitDecoder( psDec );
+ if( ret ) {
+ printf( "\nSKP_Silk_InitDecoder returned %d", ret );
+ }
+
+ totPackets = 0;
+ payloadEnd = payload;
+
+ /* Simulate the jitter buffer holding MAX_FEC_DELAY packets */
+ for( i = 0; i < MAX_LBRR_DELAY; i++ ) {
+ /* Read payload size */
+ counter = fread( &nBytes, sizeof( SKP_int16 ), 1, bitInFile );
+ /* Read payload */
+ counter = fread( payloadEnd, sizeof( SKP_uint8 ), nBytes, bitInFile );
+
+ if( (SKP_int16)counter < nBytes ) {
+ break;
+ }
+ nBytesPerPacket[ i ] = nBytes;
+ payloadEnd += nBytes;
+ }
+
+ while( 1 ) {
+ /* Read payload size */
+ counter = fread( &nBytes, sizeof( SKP_int16 ), 1, bitInFile );
+ if( nBytes < 0 || counter < 1 ) {
+ break;
+ }
+
+ /* Read payload */
+ counter = fread( payloadEnd, sizeof( SKP_uint8 ), nBytes, bitInFile );
+ if( (SKP_int16)counter < nBytes ) {
+ break;
+ }
+
+ /* Simulate losses */
+ if( ( (float)rand() / (float)RAND_MAX >= loss_prob / 100 ) && counter > 0 ) {
+ nBytesPerPacket[ MAX_LBRR_DELAY ] = nBytes;
+ payloadEnd += nBytes;
+ } else {
+ nBytesPerPacket[ MAX_LBRR_DELAY ] = 0;
+ }
+
+ if( nBytesPerPacket[ 0 ] == 0 ) {
+ /* Indicate lost packet */
+ lost = 1;
+
+ /* Packet loss. Search after FEC in next packets. Should be done in the jitter buffer */
+ payloadPtr = payload;
+ for( i = 0; i < MAX_LBRR_DELAY; i++ ) {
+ if( nBytesPerPacket[ i + 1 ] > 0 ) {
+ SKP_Silk_SDK_search_for_LBRR( psDec, payloadPtr, nBytesPerPacket[ i + 1 ], i + 1, FECpayload, &nBytesFEC );
+ if( nBytesFEC > 0 ) {
+ payloadToDec = FECpayload;
+ nBytes = nBytesFEC;
+ lost = 0;
+ break;
+ }
+ }
+ payloadPtr += nBytesPerPacket[ i + 1 ];
+ }
+ } else {
+ lost = 0;
+ nBytes = nBytesPerPacket[ 0 ];
+ payloadToDec = payload;
+ }
+
+ /* Silk decoder */
+ outPtr = out;
+ tot_len = 0;
+
+ if( lost == 0 ) {
+ /* No Loss: Decode all frames in the packet */
+ frames = 0;
+ do {
+ /* Decode 20 ms */
+ ret = SKP_Silk_SDK_Decode( psDec, &DecControl, 0, payloadToDec, nBytes, outPtr, &len );
+ if( ret ) {
+ printf( "\nSKP_Silk_SDK_Decode returned %d", ret );
+ }
+
+ frames++;
+ outPtr += len;
+ tot_len += len;
+ if( frames > MAX_INPUT_FRAMES ) {
+ /* Hack for corrupt stream that could generate too many frames */
+ outPtr = out;
+ tot_len = 0;
+ frames = 0;
+ }
+ /* Until last 20 ms frame of packet has been decoded */
+ } while( DecControl.moreInternalDecoderFrames );
+ } else {
+ /* Loss: Decode enough frames to cover one packet duration */
+ for( i = 0; i < DecControl.framesPerPacket; i++ ) {
+ /* Generate 20 ms */
+ ret = SKP_Silk_SDK_Decode( psDec, &DecControl, 1, payloadToDec, nBytes, outPtr, &len );
+ if( ret ) {
+ printf( "\nSKP_Silk_Decode returned %d", ret );
+ }
+ outPtr += len;
+ tot_len += len;
+ }
+ }
+ totPackets++;
+
+ /* Write output to file */
+ fwrite( out, sizeof( SKP_int16 ), tot_len, speechOutFile );
+
+ /* Update buffer */
+ totBytes = 0;
+ for( i = 0; i < MAX_LBRR_DELAY; i++ ) {
+ totBytes += nBytesPerPacket[ i + 1 ];
+ }
+ SKP_memmove( payload, &payload[ nBytesPerPacket[ 0 ] ], totBytes * sizeof( SKP_uint8 ) );
+ payloadEnd -= nBytesPerPacket[ 0 ];
+ SKP_memmove( nBytesPerPacket, &nBytesPerPacket[ 1 ], MAX_LBRR_DELAY * sizeof( SKP_int16 ) );
+
+ if( !quiet ) {
+ fprintf( stderr, "\rFrames decoded: %d", totPackets );
+ }
+ }
+
+ /* Empty the recieve buffer */
+ for( k = 0; k < MAX_LBRR_DELAY; k++ ) {
+ if( nBytesPerPacket[ 0 ] == 0 ) {
+ /* Indicate lost packet */
+ lost = 1;
+
+ /* Packet loss. Search after FEC in next packets. Should be done in the jitter buffer */
+ payloadPtr = payload;
+ for( i = 0; i < MAX_LBRR_DELAY; i++ ) {
+ if( nBytesPerPacket[ i + 1 ] > 0 ) {
+ SKP_Silk_SDK_search_for_LBRR( psDec, payloadPtr, nBytesPerPacket[ i + 1 ], i + 1, FECpayload, &nBytesFEC );
+ if( nBytesFEC > 0 ) {
+ payloadToDec = FECpayload;
+ nBytes = nBytesFEC;
+ lost = 0;
+ break;
+ }
+ }
+ payloadPtr += nBytesPerPacket[ i + 1 ];
+ }
+ } else {
+ lost = 0;
+ nBytes = nBytesPerPacket[ 0 ];
+ payloadToDec = payload;
+ }
+
+ /* Silk decoder */
+ outPtr = out;
+ tot_len = 0;
+
+ if( lost == 0 ) {
+ /* No loss: Decode all frames in the packet */
+ frames = 0;
+ do {
+ /* Decode 20 ms */
+ ret = SKP_Silk_SDK_Decode( psDec, &DecControl, 0, payloadToDec, nBytes, outPtr, &len );
+ if( ret ) {
+ printf( "\nSKP_Silk_SDK_Decode returned %d", ret );
+ }
+
+ frames++;
+ outPtr += len;
+ tot_len += len;
+ if( frames > MAX_INPUT_FRAMES ) {
+ /* Hack for corrupt stream that could generate too many frames */
+ outPtr = out;
+ tot_len = 0;
+ frames = 0;
+ }
+ /* Until last 20 ms frame of packet has been decoded */
+ } while( DecControl.moreInternalDecoderFrames );
+ } else {
+ /* Loss: Decode enough frames to cover one packet duration */
+
+ /* Generate 20 ms */
+ for( i = 0; i < DecControl.framesPerPacket; i++ ) {
+ ret = SKP_Silk_SDK_Decode( psDec, &DecControl, 1, payloadToDec, nBytes, outPtr, &len );
+ if( ret ) {
+ printf( "\nSKP_Silk_Decode returned %d", ret );
+ }
+ outPtr += len;
+ tot_len += len;
+ }
+ }
+ totPackets++;
+
+ /* Write output to file */
+ fwrite( out, sizeof( SKP_int16 ), tot_len, speechOutFile );
+
+ /* Update Buffer */
+ totBytes = 0;
+ for( i = 0; i < MAX_LBRR_DELAY; i++ ) {
+ totBytes += nBytesPerPacket[ i + 1 ];
+ }
+ SKP_memmove( payload, &payload[ nBytesPerPacket[ 0 ] ], totBytes * sizeof( SKP_uint8 ) );
+ payloadEnd -= nBytesPerPacket[ 0 ];
+ SKP_memmove( nBytesPerPacket, &nBytesPerPacket[ 1 ], MAX_LBRR_DELAY * sizeof( SKP_int16 ) );
+
+ if( !quiet ) {
+ fprintf( stderr, "\rPackets decoded: %d", totPackets );
+ }
+ }
+
+ if( !quiet ) {
+ printf( "\nDecoding Finished \n" );
+ }
+
+ /* Free decoder */
+ free( psDec );
+
+ /* Close files */
+ fclose( speechOutFile );
+ fclose( bitInFile );
+
+ return 0;
+}
--- /dev/null
+++ b/test/Enc_SDK.vcproj
@@ -1,0 +1,217 @@
+<?xml version="1.0" encoding="Windows-1252"?>
+<VisualStudioProject
+ ProjectType="Visual C++"
+ Version="8,00"
+ Name="Enc_SDK"
+ ProjectGUID="{6D97A8EF-5724-4D85-8BF4-C583714BBA78}"
+ RootNamespace="Enc"
+ Keyword="Win32Proj"
+ >
+ <Platforms>
+ <Platform
+ Name="Win32"
+ />
+ </Platforms>
+ <ToolFiles>
+ </ToolFiles>
+ <Configurations>
+ <Configuration
+ Name="Debug|Win32"
+ OutputDirectory="$(SolutionDir)"
+ IntermediateDirectory="$(ConfigurationName)\Enc"
+ ConfigurationType="1"
+ CharacterSet="1"
+ >
+ <Tool
+ Name="VCPreBuildEventTool"
+ />
+ <Tool
+ Name="VCCustomBuildTool"
+ />
+ <Tool
+ Name="VCXMLDataGeneratorTool"
+ />
+ <Tool
+ Name="VCWebServiceProxyGeneratorTool"
+ />
+ <Tool
+ Name="VCMIDLTool"
+ />
+ <Tool
+ Name="VCCLCompilerTool"
+ Optimization="0"
+ AdditionalIncludeDirectories="../interface"
+ PreprocessorDefinitions="WIN32;_DEBUG;_CONSOLE"
+ MinimalRebuild="true"
+ BasicRuntimeChecks="3"
+ RuntimeLibrary="1"
+ UsePrecompiledHeader="0"
+ WarningLevel="3"
+ Detect64BitPortabilityProblems="true"
+ DebugInformationFormat="4"
+ />
+ <Tool
+ Name="VCManagedResourceCompilerTool"
+ />
+ <Tool
+ Name="VCResourceCompilerTool"
+ />
+ <Tool
+ Name="VCPreLinkEventTool"
+ />
+ <Tool
+ Name="VCLinkerTool"
+ OutputFile="$(OutDir)\Encoder_debug.exe"
+ LinkIncremental="2"
+ AdditionalLibraryDirectories=""
+ IgnoreAllDefaultLibraries="false"
+ IgnoreDefaultLibraryNames=""
+ GenerateDebugInformation="true"
+ ProgramDatabaseFile="$(TargetDir)$(TargetName).pdb"
+ SubSystem="1"
+ TargetMachine="1"
+ />
+ <Tool
+ Name="VCALinkTool"
+ />
+ <Tool
+ Name="VCManifestTool"
+ />
+ <Tool
+ Name="VCXDCMakeTool"
+ />
+ <Tool
+ Name="VCBscMakeTool"
+ />
+ <Tool
+ Name="VCFxCopTool"
+ />
+ <Tool
+ Name="VCAppVerifierTool"
+ />
+ <Tool
+ Name="VCWebDeploymentTool"
+ />
+ <Tool
+ Name="VCPostBuildEventTool"
+ />
+ </Configuration>
+ <Configuration
+ Name="Release|Win32"
+ OutputDirectory="$(SolutionDir)"
+ IntermediateDirectory="$(ConfigurationName)_Enc"
+ ConfigurationType="1"
+ CharacterSet="1"
+ WholeProgramOptimization="1"
+ >
+ <Tool
+ Name="VCPreBuildEventTool"
+ />
+ <Tool
+ Name="VCCustomBuildTool"
+ />
+ <Tool
+ Name="VCXMLDataGeneratorTool"
+ />
+ <Tool
+ Name="VCWebServiceProxyGeneratorTool"
+ />
+ <Tool
+ Name="VCMIDLTool"
+ />
+ <Tool
+ Name="VCCLCompilerTool"
+ AdditionalIncludeDirectories="../interface"
+ PreprocessorDefinitions="WIN32;NDEBUG;_CONSOLE"
+ RuntimeLibrary="0"
+ FloatingPointModel="2"
+ UsePrecompiledHeader="0"
+ WarningLevel="3"
+ Detect64BitPortabilityProblems="true"
+ DebugInformationFormat="3"
+ />
+ <Tool
+ Name="VCManagedResourceCompilerTool"
+ />
+ <Tool
+ Name="VCResourceCompilerTool"
+ />
+ <Tool
+ Name="VCPreLinkEventTool"
+ />
+ <Tool
+ Name="VCLinkerTool"
+ AdditionalOptions="/fixed:no"
+ OutputFile="$(OutDir)\Encoder.exe"
+ LinkIncremental="1"
+ AdditionalLibraryDirectories=""
+ IgnoreDefaultLibraryNames=""
+ GenerateDebugInformation="false"
+ SubSystem="1"
+ OptimizeReferences="2"
+ EnableCOMDATFolding="2"
+ TargetMachine="1"
+ />
+ <Tool
+ Name="VCALinkTool"
+ />
+ <Tool
+ Name="VCManifestTool"
+ />
+ <Tool
+ Name="VCXDCMakeTool"
+ />
+ <Tool
+ Name="VCBscMakeTool"
+ />
+ <Tool
+ Name="VCFxCopTool"
+ />
+ <Tool
+ Name="VCAppVerifierTool"
+ />
+ <Tool
+ Name="VCWebDeploymentTool"
+ />
+ <Tool
+ Name="VCPostBuildEventTool"
+ />
+ </Configuration>
+ </Configurations>
+ <References>
+ </References>
+ <Files>
+ <Filter
+ Name="Source Files"
+ Filter="cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx"
+ UniqueIdentifier="{4FC737F1-C7A5-4376-A066-2A32D752A2FF}"
+ >
+ <File
+ RelativePath=".\Encoder.c"
+ >
+ </File>
+ </Filter>
+ <Filter
+ Name="interface"
+ >
+ <File
+ RelativePath="..\interface\SKP_Silk_control.h"
+ >
+ </File>
+ <File
+ RelativePath="..\interface\SKP_Silk_errors.h"
+ >
+ </File>
+ <File
+ RelativePath="..\interface\SKP_Silk_SDK_API.h"
+ >
+ </File>
+ <File
+ RelativePath="..\interface\SKP_Silk_typedef.h"
+ >
+ </File>
+ </Filter>
+ </Files>
+ <Globals>
+ </Globals>
+</VisualStudioProject>
--- /dev/null
+++ b/test/Encoder.c
@@ -1,0 +1,269 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+/*****************************/
+/* Silk encoder test program */
+/*****************************/
+
+#ifdef _WIN32
+#define _CRT_SECURE_NO_DEPRECATE 1
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+#include "SKP_Silk_SDK_API.h"
+
+/* Define codec specific settings */
+#define MAX_BYTES_PER_FRAME 250 // Equals peak bitrate of 100 kbps
+#define MAX_INPUT_FRAMES 5
+#define MAX_LBRR_DELAY 2
+#define MAX_FRAME_LENGTH 480
+
+static void print_usage( char* argv[] ) {
+ printf( "\nusage: %s in.pcm out.bit [settings]\n", argv[ 0 ] );
+ printf( "\nin.pcm : Speech input to encoder" );
+ printf( "\nout.bit : Bitstream output from encoder" );
+ printf( "\n settings:" );
+ printf( "\n-fs <kHz> : Sampling rate in kHz, default: 24" );
+ printf( "\n-packetlength <ms> : Packet interval in ms, default: 20" );
+ printf( "\n-rate <bps> : Target bitrate; default: 25000" );
+ printf( "\n-loss <perc> : Uplink loss estimate, in percent (0-100); default: 0" );
+ printf( "\n-inbandFEC <flag> : Enable inband FEC usage (0/1); default: 0" );
+ printf( "\n-complexity <comp> : Set complexity, 0: low, 1: medium, 2: high; default: 2" );
+ printf( "\n-DTX <flag> : Enable DTX (0/1); default: 0" );
+ printf( "\n-quiet : Print only some basic values" );
+ printf( "\n");
+}
+
+int main( int argc, char* argv[] )
+{
+ size_t counter;
+ SKP_int k, args, totPackets, totActPackets, ret;
+ SKP_int16 nBytes;
+ double sumBytes, sumWBytes, sumActBytes, avg_rate, act_rate, wght_rate, nrg;
+ SKP_uint8 payload[ MAX_BYTES_PER_FRAME * MAX_INPUT_FRAMES ];
+ SKP_int16 in[ MAX_FRAME_LENGTH * MAX_INPUT_FRAMES ];
+ char speechInFileName[ 150 ], bitOutFileName[ 150 ];
+ FILE *bitOutFile, *speechInFile;
+ SKP_int32 encSizeBytes;
+ void *psEnc;
+
+ /* default settings */
+ SKP_int fs_kHz = 24;
+ SKP_int targetRate_bps = 25000;
+ SKP_int packetSize_ms = 20;
+ SKP_int frameSizeReadFromFile_ms = 20;
+ SKP_int packetLoss_perc = 0, complexity_mode = 2, smplsSinceLastPacket;
+ SKP_int INBandFec_enabled = 0, DTX_enabled = 0, quiet = 0;
+ SKP_SILK_SDK_EncControlStruct encControl; // Struct for input to encoder
+
+ if( argc < 3 ) {
+ print_usage( argv );
+ exit( 0 );
+ }
+
+ /* get arguments */
+ args = 1;
+ strcpy( speechInFileName, argv[ args ] );
+ args++;
+ strcpy( bitOutFileName, argv[ args ] );
+ args++;
+ while( args < argc ) {
+ if( SKP_STR_CASEINSENSITIVE_COMPARE( argv[ args ], "-fs" ) == 0 ) {
+ sscanf( argv[ args + 1 ], "%d", &fs_kHz );
+ args += 2;
+ } else if( SKP_STR_CASEINSENSITIVE_COMPARE( argv[ args ], "-packetlength" ) == 0 ) {
+ sscanf( argv[ args + 1 ], "%d", &packetSize_ms );
+ args += 2;
+ } else if( SKP_STR_CASEINSENSITIVE_COMPARE( argv[ args ], "-rate" ) == 0 ) {
+ sscanf( argv[ args + 1 ], "%d", &targetRate_bps );
+ args += 2;
+ } else if( SKP_STR_CASEINSENSITIVE_COMPARE( argv[ args ], "-loss" ) == 0 ) {
+ sscanf( argv[ args + 1 ], "%d", &packetLoss_perc );
+ args += 2;
+ } else if( SKP_STR_CASEINSENSITIVE_COMPARE( argv[ args ], "-complexity" ) == 0 ) {
+ sscanf( argv[ args + 1 ], "%d", &complexity_mode );
+ args += 2;
+ } else if( SKP_STR_CASEINSENSITIVE_COMPARE( argv[ args ], "-inbandFEC" ) == 0 ) {
+ sscanf( argv[ args + 1 ], "%d", &INBandFec_enabled );
+ args += 2;
+ } else if( SKP_STR_CASEINSENSITIVE_COMPARE( argv[ args ], "-DTX") == 0 ) {
+ sscanf( argv[ args + 1 ], "%d", &DTX_enabled );
+ args += 2;
+ } else if( SKP_STR_CASEINSENSITIVE_COMPARE( argv[ args ], "-quiet" ) == 0 ) {
+ quiet = 1;
+ args++;
+ } else {
+ printf( "Error: unrecognized setting: %s\n\n", argv[ args ] );
+ print_usage( argv );
+ exit( 0 );
+ }
+ }
+
+ /* Print options */
+ if( !quiet ) {
+ printf("******************* Silk Encoder v %s ****************\n", SKP_Silk_SDK_get_version());
+ printf("******************* Compiled for %d bit cpu ********* \n", (int)sizeof(void*) * 8 );
+ printf( "Input: %s\n", speechInFileName );
+ printf( "Output: %s\n", bitOutFileName );
+ printf( "Sampling rate: %d kHz\n", fs_kHz);
+ printf( "Packet interval: %d ms\n", packetSize_ms);
+ printf( "Inband FEC used: %d\n", INBandFec_enabled);
+ printf( "DTX used: %d\n", DTX_enabled);
+ printf( "Complexity: %d\n", complexity_mode);
+ printf( "Target bitrate: %d bps\n", targetRate_bps);
+ }
+
+ /* Open files */
+ speechInFile = fopen( speechInFileName, "rb" );
+ if( speechInFile == NULL ) {
+ printf( "Error: could not open input file %s\n", speechInFileName );
+ exit( 0 );
+ }
+ bitOutFile = fopen( bitOutFileName, "wb" );
+ if( bitOutFile == NULL ) {
+ printf( "Error: could not open output file %s\n", bitOutFileName );
+ exit( 0 );
+ }
+
+ /* Create Encoder */
+ ret = SKP_Silk_SDK_Get_Encoder_Size( &encSizeBytes );
+ if( ret ) {
+ printf( "\nSKP_Silk_create_encoder returned %d", ret );
+ }
+
+ psEnc = malloc( encSizeBytes );
+
+ /* Reset Encoder */
+ ret = SKP_Silk_SDK_InitEncoder( psEnc, &encControl );
+ if( ret ) {
+ printf( "\nSKP_Silk_reset_encoder returned %d", ret );
+ }
+
+ /* Set Encoder parameters */
+ encControl.sampleRate = fs_kHz * 1000;
+ encControl.packetSize = packetSize_ms * fs_kHz;
+ encControl.packetLossPercentage = packetLoss_perc;
+ encControl.useInBandFEC = INBandFec_enabled;
+ encControl.useDTX = DTX_enabled;
+ encControl.complexity = complexity_mode;
+ encControl.bitRate = targetRate_bps;
+
+ if( fs_kHz > 24 || fs_kHz < 0 ) {
+ printf( "\nError: Sampling rate = %d out of range, valid range 8 - 24 \n \n", fs_kHz );
+ exit( 0 );
+ }
+
+ totPackets = 0;
+ totActPackets = 0;
+ smplsSinceLastPacket = 0;
+ sumBytes = 0.0;
+ sumActBytes = 0.0;
+ sumWBytes = 0.0;
+
+ while( 1 ) {
+ /* Read input to file */
+ counter = fread( in, sizeof( SKP_int16 ), frameSizeReadFromFile_ms * fs_kHz, speechInFile );
+ if( (SKP_int)counter < frameSizeReadFromFile_ms * fs_kHz ) {
+ break;
+ }
+
+ /* max payload size */
+ nBytes = MAX_BYTES_PER_FRAME * MAX_INPUT_FRAMES;
+
+ /* Silk Encoder */
+ ret = SKP_Silk_SDK_Encode( psEnc, &encControl, in, (SKP_int16)counter, payload, &nBytes );
+ if( ret ) {
+ printf( "\nSKP_Silk_Encode returned %d", ret );
+ break;
+ }
+
+ /* Get packet size */
+ packetSize_ms = (SKP_int)( 1000 * encControl.packetSize ) / encControl.sampleRate;
+
+ smplsSinceLastPacket += (SKP_int)counter;
+
+ if( ( smplsSinceLastPacket / fs_kHz ) == packetSize_ms ) {
+ /* Sends a dummy zero size packet in case of DTX period */
+ /* to make it work with the decoder test program. */
+ /* In practice should be handled by RTP sequence numbers */
+ totPackets++;
+ sumBytes += nBytes;
+ sumWBytes += pow( (double)nBytes, 10.0 );
+ nrg = 0.0;
+ for( k = 0; k < (SKP_int)counter; k++ ) {
+ nrg += in[ k ] * (double)in[ k ];
+ }
+ if( ( nrg / (SKP_int)counter ) > 1e3 ) {
+ sumActBytes += nBytes;
+ totActPackets++;
+ }
+
+ /* Write payload size */
+ fwrite( &nBytes, sizeof( SKP_int16 ), 1, bitOutFile );
+
+ /* Write payload */
+ fwrite( payload, sizeof( SKP_uint8 ), nBytes, bitOutFile );
+
+ if( !quiet ) {
+ fprintf( stderr, "\rPackets encoded: %d", totPackets );
+ }
+ smplsSinceLastPacket = 0;
+ }
+ }
+
+ /* Write dummy because it can not end with 0 bytes */
+ nBytes = -1;
+
+ /* Write payload size */
+ fwrite( &nBytes, sizeof( SKP_int16 ), 1, bitOutFile );
+
+ /* Query encoder */
+ packetSize_ms = (SKP_int)( 1000 * encControl.packetSize ) / encControl.sampleRate;
+
+ /* Free Encoder */
+ free( psEnc );
+
+ fclose( speechInFile );
+ fclose( bitOutFile );
+
+ avg_rate = 8.0 / packetSize_ms * sumBytes / totPackets;
+ act_rate = 8.0 / packetSize_ms * sumActBytes / totActPackets;
+ wght_rate = 8.0 / packetSize_ms * pow( sumWBytes / totPackets, 0.1 );
+ if( !quiet ) {
+ printf( "\nAverage bitrate: %.3f kbps", avg_rate );
+ printf( "\nActive bitrate: %.3f kbps", act_rate );
+ printf( "\nWeighted bitrate: %.3f kbps", wght_rate );
+ printf( "\n\n" );
+ } else {
+ /* print average and weighted bitrates */
+ printf( "%.3f %.3f %.3f \n", avg_rate, act_rate, wght_rate );
+ }
+ return 0;
+}
--- /dev/null
+++ b/test/SignalCompare.vcproj
@@ -1,0 +1,197 @@
+<?xml version="1.0" encoding="Windows-1252"?>
+<VisualStudioProject
+ ProjectType="Visual C++"
+ Version="8,00"
+ Name="SignalCompare"
+ ProjectGUID="{7FE8F544-9175-40C3-A187-7F15CE9A75D8}"
+ RootNamespace="Test"
+ Keyword="Win32Proj"
+ >
+ <Platforms>
+ <Platform
+ Name="Win32"
+ />
+ </Platforms>
+ <ToolFiles>
+ </ToolFiles>
+ <Configurations>
+ <Configuration
+ Name="Debug|Win32"
+ OutputDirectory="$(SolutionDir)"
+ IntermediateDirectory="$(ConfigurationName)_SigCmp"
+ ConfigurationType="1"
+ CharacterSet="1"
+ >
+ <Tool
+ Name="VCPreBuildEventTool"
+ />
+ <Tool
+ Name="VCCustomBuildTool"
+ />
+ <Tool
+ Name="VCXMLDataGeneratorTool"
+ />
+ <Tool
+ Name="VCWebServiceProxyGeneratorTool"
+ />
+ <Tool
+ Name="VCMIDLTool"
+ />
+ <Tool
+ Name="VCCLCompilerTool"
+ Optimization="0"
+ AdditionalIncludeDirectories="..\interface;..\src"
+ PreprocessorDefinitions="WIN32;_DEBUG;_CONSOLE"
+ MinimalRebuild="true"
+ BasicRuntimeChecks="3"
+ RuntimeLibrary="1"
+ UsePrecompiledHeader="0"
+ WarningLevel="3"
+ Detect64BitPortabilityProblems="true"
+ DebugInformationFormat="4"
+ />
+ <Tool
+ Name="VCManagedResourceCompilerTool"
+ />
+ <Tool
+ Name="VCResourceCompilerTool"
+ />
+ <Tool
+ Name="VCPreLinkEventTool"
+ />
+ <Tool
+ Name="VCLinkerTool"
+ OutputFile="SignalCompare_debug.exe"
+ LinkIncremental="2"
+ AdditionalLibraryDirectories=""
+ IgnoreAllDefaultLibraries="false"
+ IgnoreDefaultLibraryNames=""
+ GenerateDebugInformation="true"
+ ProgramDatabaseFile="$(TargetDir)$(TargetName).pdb"
+ SubSystem="1"
+ TargetMachine="1"
+ />
+ <Tool
+ Name="VCALinkTool"
+ />
+ <Tool
+ Name="VCManifestTool"
+ />
+ <Tool
+ Name="VCXDCMakeTool"
+ />
+ <Tool
+ Name="VCBscMakeTool"
+ />
+ <Tool
+ Name="VCFxCopTool"
+ />
+ <Tool
+ Name="VCAppVerifierTool"
+ />
+ <Tool
+ Name="VCWebDeploymentTool"
+ />
+ <Tool
+ Name="VCPostBuildEventTool"
+ />
+ </Configuration>
+ <Configuration
+ Name="Release|Win32"
+ OutputDirectory="$(SolutionDir)"
+ IntermediateDirectory="$(ConfigurationName)_SigCmp"
+ ConfigurationType="1"
+ CharacterSet="1"
+ WholeProgramOptimization="1"
+ >
+ <Tool
+ Name="VCPreBuildEventTool"
+ />
+ <Tool
+ Name="VCCustomBuildTool"
+ />
+ <Tool
+ Name="VCXMLDataGeneratorTool"
+ />
+ <Tool
+ Name="VCWebServiceProxyGeneratorTool"
+ />
+ <Tool
+ Name="VCMIDLTool"
+ />
+ <Tool
+ Name="VCCLCompilerTool"
+ AdditionalIncludeDirectories="..\interface;..\src"
+ PreprocessorDefinitions="WIN32;NDEBUG;_CONSOLE"
+ RuntimeLibrary="0"
+ FloatingPointModel="2"
+ UsePrecompiledHeader="0"
+ WarningLevel="3"
+ Detect64BitPortabilityProblems="true"
+ DebugInformationFormat="3"
+ />
+ <Tool
+ Name="VCManagedResourceCompilerTool"
+ />
+ <Tool
+ Name="VCResourceCompilerTool"
+ />
+ <Tool
+ Name="VCPreLinkEventTool"
+ />
+ <Tool
+ Name="VCLinkerTool"
+ AdditionalOptions="/fixed:no"
+ OutputFile="$(SolutionDir)SignalCompare.exe"
+ LinkIncremental="1"
+ AdditionalLibraryDirectories=""
+ IgnoreDefaultLibraryNames=""
+ GenerateDebugInformation="false"
+ SubSystem="1"
+ OptimizeReferences="2"
+ EnableCOMDATFolding="2"
+ TargetMachine="1"
+ />
+ <Tool
+ Name="VCALinkTool"
+ />
+ <Tool
+ Name="VCManifestTool"
+ />
+ <Tool
+ Name="VCXDCMakeTool"
+ />
+ <Tool
+ Name="VCBscMakeTool"
+ />
+ <Tool
+ Name="VCFxCopTool"
+ />
+ <Tool
+ Name="VCAppVerifierTool"
+ />
+ <Tool
+ Name="VCWebDeploymentTool"
+ />
+ <Tool
+ Name="VCPostBuildEventTool"
+ />
+ </Configuration>
+ </Configurations>
+ <References>
+ </References>
+ <Files>
+ <Filter
+ Name="Source Files"
+ Filter="cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx"
+ UniqueIdentifier="{4FC737F1-C7A5-4376-A066-2A32D752A2FF}"
+ >
+ <File
+ RelativePath=".\signalCompare.c"
+ >
+ </File>
+ </Filter>
+ </Files>
+ <Globals>
+ </Globals>
+</VisualStudioProject>
--- /dev/null
+++ b/test/signalCompare.c
@@ -1,0 +1,366 @@
+/***********************************************************************
+Copyright (c) 2006-2010, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, (subject to the limitations in the disclaimer below)
+are permitted provided that the following conditions are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Skype Limited, nor the names of specific
+contributors, may be used to endorse or promote products derived from
+this software without specific prior written permission.
+NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
+BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+/*
+* Compare two audio signals and compute weighted SNR difference
+*/
+
+#ifdef _WIN32
+#define _CRT_SECURE_NO_DEPRECATE 1
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+
+#include "SKP_Silk_SigProc_FIX.h"
+
+#define FRAME_LENGTH_MS 10
+#define WIN_LENGTH_MS 20
+#define BW_EXPANSION 0.7f
+
+#define MAX_FS_KHZ 24
+#define LPC_ORDER 10
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* Internally used functions */
+void Autocorrelation(
+ SKP_float *results, /* o result (length correlationCount) */
+ const SKP_float *inputData, /* i input data to correlate */
+ SKP_int inputDataSize, /* i length of input */
+ SKP_int correlationCount /* i number of correlation taps to compute */
+);
+
+/* inner product of two SKP_float arrays, with result as double */
+double Inner_product(
+ const SKP_float *data1,
+ const SKP_float *data2,
+ SKP_int dataSize
+);
+/* Solve the normal equations using the Levinson-Durbin recursion */
+SKP_float Levinsondurbin( /* O prediction error energy */
+ SKP_float A[], /* O prediction coefficients [order] */
+ const SKP_float corr[], /* I input auto-correlations [order + 1] */
+ const SKP_int order /* I prediction order */
+);
+
+/* Chirp (bw expand) LP AR filter */
+void Bwexpander(
+ SKP_float *ar, /* io AR filter to be expanded (without leading 1) */
+ const SKP_int d, /* i length of ar */
+ const SKP_float chirp /* i chirp factor (typically in range (0..1) ) */
+);
+
+#ifdef __cplusplus
+}
+#endif
+
+static void print_usage(char* argv[]) {
+ printf("\nusage: %s ref.pcm test.pcm [settings]\n", argv[ 0 ]);
+ printf("\nref.pcm : Reference file");
+ printf("\ntest.pcm : File to be tested, should be of same length as ref.pcm");
+ printf("\n settings:");
+ printf("\n-diff : Only determine bit-exactness");
+ printf("\n-fs <kHz> : Sampling rate in kHz, max: %d; default: 24", MAX_FS_KHZ);
+ printf("\n");
+}
+
+int main(int argc, char* argv[])
+{
+ SKP_int args, n, i, counterRef, counterTest;
+ char testInFileName[150], refInFileName[150];
+ FILE *refInFile, *testInFile;
+ SKP_int nFrames = 0, isUnequal = 0;
+ SKP_int diff = 0, Fs_kHz = 24; /* defaults */
+ SKP_float c, refWhtnd, testWhtnd, refNrg, diffNrg;
+ double SNR = 0.0;
+ SKP_int16 refIn[WIN_LENGTH_MS * MAX_FS_KHZ], testIn[WIN_LENGTH_MS * MAX_FS_KHZ];
+ SKP_float refWin[WIN_LENGTH_MS * MAX_FS_KHZ], testWin[WIN_LENGTH_MS * MAX_FS_KHZ];
+ SKP_float autoCorr[LPC_ORDER + 1], LPC_Coef[LPC_ORDER];
+
+ if (argc < 3) {
+ print_usage(argv);
+ exit(0);
+ }
+
+ /* get arguments */
+ args = 1;
+ strcpy(refInFileName, argv[args]);
+ args++;
+ strcpy(testInFileName, argv[args]);
+ args++;
+ while(args < argc ) {
+ if (SKP_STR_CASEINSENSITIVE_COMPARE(argv[args], "-diff") == 0) {
+ diff = 1;
+ args++;
+ }else if (SKP_STR_CASEINSENSITIVE_COMPARE(argv[args], "-fs") == 0) {
+ sscanf(argv[args+1], "%d", &Fs_kHz);
+ args += 2;
+ } else {
+ printf("Error: unrecognized setting: %s\n\n", argv[args]);
+ print_usage(argv);
+ exit(0);
+ }
+ }
+
+ if( Fs_kHz > MAX_FS_KHZ ) {
+ printf("Error: sampling rate too high: %d\n\n", Fs_kHz);
+ print_usage(argv);
+ exit(0);
+ }
+
+ printf("Reference: %s\n", refInFileName);
+ //printf("Test: %s\n", testInFileName);
+
+ /* open files */
+ refInFile = fopen(refInFileName, "rb");
+ if (refInFile==NULL) {
+ printf("Error: could not open input file %s\n", refInFileName);
+ exit(0);
+ }
+ testInFile = fopen(testInFileName, "rb");
+ if (testInFile==NULL) {
+ printf("Error: could not open input file %s\n", testInFileName);
+ exit(0);
+ }
+
+ SKP_memset( refIn, 0, sizeof(refIn) );
+ SKP_memset( testIn, 0, sizeof(testIn) );
+
+ while(1) {
+ /* Read inputs */
+ counterRef = (SKP_int)fread(&refIn[(WIN_LENGTH_MS - FRAME_LENGTH_MS) * Fs_kHz],
+ sizeof(SKP_int16), FRAME_LENGTH_MS * Fs_kHz, refInFile);
+ counterTest = (SKP_int)fread(&testIn[(WIN_LENGTH_MS - FRAME_LENGTH_MS) * Fs_kHz],
+ sizeof(SKP_int16), FRAME_LENGTH_MS * Fs_kHz, testInFile);
+ if(counterRef != FRAME_LENGTH_MS * Fs_kHz || counterTest != FRAME_LENGTH_MS * Fs_kHz){
+ break;
+ }
+
+ /* test for bit-exactness */
+ for( n = 0; n < FRAME_LENGTH_MS * Fs_kHz; n++ ) {
+ if( refIn[(WIN_LENGTH_MS - FRAME_LENGTH_MS) * Fs_kHz + n] !=
+ testIn[(WIN_LENGTH_MS - FRAME_LENGTH_MS) * Fs_kHz + n] ) {
+ isUnequal = 1;
+ break;
+ }
+ }
+
+ /* apply sine window */
+ for( n = 0; n < WIN_LENGTH_MS * Fs_kHz; n++ ) {
+ c = (SKP_float)sin( 3.14159265 * (n + 1) / (WIN_LENGTH_MS * Fs_kHz + 1) );
+ refWin[n] = refIn[n] * c;
+ testWin[n] = testIn[n] * c;
+ }
+
+ /* LPC analysis on reference signal */
+
+ /* Calculate auto correlation */
+ Autocorrelation(autoCorr, refWin, WIN_LENGTH_MS * Fs_kHz, LPC_ORDER + 1);
+
+ /* Add white noise */
+ autoCorr[ 0 ] += autoCorr[ 0 ] * 1e-6f + 1.0f;
+
+ /* Convert correlations to prediction coefficients */
+ Levinsondurbin(LPC_Coef, autoCorr, LPC_ORDER);
+
+ /* Bandwdith expansion */
+ Bwexpander(LPC_Coef, LPC_ORDER, BW_EXPANSION);
+
+ /* Filter both signals */
+ refNrg = 1.0f;
+ diffNrg = 1e-10f;
+ for( n = (WIN_LENGTH_MS - FRAME_LENGTH_MS) / 2 * Fs_kHz;
+ n < (WIN_LENGTH_MS + FRAME_LENGTH_MS) / 2 * Fs_kHz; n++ ) {
+ refWhtnd = refIn[n];
+ testWhtnd = testIn[n];
+ for( i = 0; i < LPC_ORDER; i++ ) {
+ refWhtnd -= LPC_Coef[ i ] * refIn[n - i - 1];
+ testWhtnd -= LPC_Coef[ i ] * testIn[n - i - 1];
+ }
+ refNrg += refWhtnd * refWhtnd;
+ diffNrg += (refWhtnd - testWhtnd) * (refWhtnd - testWhtnd);
+ }
+
+ /* weighted SNR */
+ if( refNrg > FRAME_LENGTH_MS * Fs_kHz ) {
+ SNR += 10.0 * log10( refNrg / diffNrg );
+ nFrames++;
+ }
+
+ /* Update Buffer */
+ SKP_memmove( refIn, &refIn[FRAME_LENGTH_MS * Fs_kHz], (WIN_LENGTH_MS - FRAME_LENGTH_MS) * Fs_kHz * sizeof(SKP_int16));
+ SKP_memmove( testIn, &testIn[FRAME_LENGTH_MS * Fs_kHz], (WIN_LENGTH_MS - FRAME_LENGTH_MS) * Fs_kHz * sizeof(SKP_int16));
+ }
+
+ if( diff ) {
+ if( isUnequal ) {
+ printf("Signals DIFFER\n");
+ } else {
+ if(counterRef != counterTest){
+ printf("Warning: signals differ in length\n");
+ }
+ printf("Signals BIT-EXACT\n");
+ }
+ } else {
+ if( nFrames == 0 ) {
+ printf("At least one signal too short or not loud enough\n");
+ exit(0);
+ }
+ if(counterRef != counterTest){
+ printf("Warning: signals differ in length\n");
+ }
+ if( isUnequal == 0 ) {
+ printf("Signals BIT-EXACT\n");
+ } else {
+ printf("AVERAGE WEIGHTED SNR: %4.1f dB\n", SNR / nFrames);
+ }
+ }
+ printf("\n");
+
+ /* Close Files */
+ fclose(refInFile);
+ fclose(testInFile);
+
+ return 0;
+}
+
+/* compute autocorrelation */
+void Autocorrelation(
+ SKP_float *results, /* o result (length correlationCount) */
+ const SKP_float *inputData, /* i input data to correlate */
+ SKP_int inputDataSize, /* i length of input */
+ SKP_int correlationCount /* i number of correlation taps to compute */
+)
+{
+ SKP_int i;
+
+ if (correlationCount > inputDataSize) {
+ correlationCount = inputDataSize;
+ }
+
+ for( i = 0; i < correlationCount; i++ ) {
+ results[ i ] = (SKP_float)Inner_product( inputData, inputData + i, inputDataSize - i );
+ }
+}
+
+/* inner product of two SKP_float arrays, with result as double */
+double Inner_product(
+ const SKP_float *data1,
+ const SKP_float *data2,
+ SKP_int dataSize
+)
+{
+ SKP_int i, dataSize4;
+ double result;
+
+ /* 4x unrolled loop */
+ result = 0.0f;
+ dataSize4 = dataSize & 0xFFFC;
+ for( i = 0; i < dataSize4; i += 4 ) {
+ result += data1[ i + 0 ] * data2[ i + 0 ] +
+ data1[ i + 1 ] * data2[ i + 1 ] +
+ data1[ i + 2 ] * data2[ i + 2 ] +
+ data1[ i + 3 ] * data2[ i + 3 ];
+ }
+
+ /* add any remaining products */
+ for( ; i < dataSize; i++ ) {
+ result += data1[ i ] * data2[ i ];
+ }
+
+ return result;
+}
+
+/* Solve the normal equations using the Levinson-Durbin recursion */
+SKP_float Levinsondurbin( /* O prediction error energy */
+ SKP_float A[], /* O prediction coefficients [order] */
+ const SKP_float corr[], /* I input auto-correlations [order + 1] */
+ const SKP_int order /* I prediction order */
+)
+{
+ SKP_int i, mHalf, m;
+ SKP_float min_nrg, nrg, t, km, Atmp1, Atmp2;
+
+ min_nrg = 1e-12f * corr[ 0 ] + 1e-9f;
+ nrg = corr[ 0 ];
+ nrg = SKP_max(min_nrg, nrg);
+ A[ 0 ] = corr[ 1 ] / nrg;
+ nrg -= A[ 0 ] * corr[ 1 ];
+ nrg = SKP_max(min_nrg, nrg);
+
+ for( m = 1; m < order; m++ )
+ {
+ t = corr[ m + 1 ];
+ for( i = 0; i < m; i++ ) {
+ t -= A[ i ] * corr[ m - i ];
+ }
+
+ /* reflection coefficient */
+ km = t / nrg;
+
+ /* residual energy */
+ nrg -= km * t;
+ nrg = SKP_max(min_nrg, nrg);
+
+ mHalf = m >> 1;
+ for( i = 0; i < mHalf; i++ ) {
+ Atmp1 = A[ i ];
+ Atmp2 = A[ m - i - 1 ];
+ A[ m - i - 1 ] -= km * Atmp1;
+ A[ i ] -= km * Atmp2;
+ }
+ if( m & 1 ) {
+ A[ mHalf ] -= km * A[ mHalf ];
+ }
+ A[ m ] = km;
+ }
+
+ /* return the residual energy */
+ return nrg;
+}
+
+/* Chirp (bw expand) LP AR filter */
+void Bwexpander(
+ SKP_float *ar, /* io AR filter to be expanded (without leading 1) */
+ const SKP_int d, /* i length of ar */
+ const SKP_float chirp /* i chirp factor (typically in range (0..1) ) */
+)
+{
+ SKP_int i;
+ SKP_float cfac = chirp;
+
+ for( i = 0; i < d - 1; i++ ) {
+ ar[ i ] *= cfac;
+ cfac *= chirp;
+ }
+ ar[ d - 1 ] *= cfac;
+}