ref: 2024869a595118d686682b38386c594c717ea5bd
dir: /src/amr-nb.c/
/* File format: AMR-NB (c) 2007 [email protected]
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or (at
* your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
* General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/*
* In order to use the AMR format with SoX, you need to have an
* AMR library installed at SoX build time. The SoX build system
* recognizes the AMR implementations available from
* http://opencore-amr.sourceforge.net/
*/
#include "sox_i.h"
/* Common definitions: */
enum amrnb_mode { amrnb_mode_dummy };
static const unsigned amrnb_block_size[] = {13, 14, 16, 18, 20, 21, 27, 32, 6, 0, 0, 0, 0, 0, 0, 1};
static char const amrnb_magic[] = "#!AMR\n";
#define amr_block_size amrnb_block_size
#define amr_magic amrnb_magic
#define amr_priv_t amrnb_priv_t
#define amr_opencore_funcs amrnb_opencore_funcs
#define amr_gp3_funcs amrnb_gp3_funcs
#define AMR_CODED_MAX 32 /* max coded size */
#define AMR_ENCODING SOX_ENCODING_AMR_NB
#define AMR_FORMAT_FN lsx_amr_nb_format_fn
#define AMR_FRAME 160 /* 20ms @ 8kHz */
#define AMR_MODE_MAX 7
#define AMR_NAMES "amr-nb", "anb"
#define AMR_RATE 8000
#define AMR_DESC "3GPP Adaptive Multi Rate Narrow-Band (AMR-NB) lossy speech compressor"
#ifdef DL_OPENCORE_AMRNB
#define AMR_FUNC LSX_DLENTRY_DYNAMIC
#else
#define AMR_FUNC LSX_DLENTRY_STATIC
#endif /* DL_AMRNB */
/* OpenCore definitions: */
#define AMR_OPENCORE 1
#define AMR_OPENCORE_ENABLE_ENCODE 1
#define AMR_OPENCORE_FUNC_ENTRIES(f,x) \
AMR_FUNC(f,x, void*, Encoder_Interface_init, (int dtx)) \
AMR_FUNC(f,x, int, Encoder_Interface_Encode, (void* state, enum amrnb_mode mode, const short* in, unsigned char* out, int forceSpeech)) \
AMR_FUNC(f,x, void, Encoder_Interface_exit, (void* state)) \
AMR_FUNC(f,x, void*, Decoder_Interface_init, (void)) \
AMR_FUNC(f,x, void, Decoder_Interface_Decode, (void* state, const unsigned char* in, short* out, int bfi)) \
AMR_FUNC(f,x, void, Decoder_Interface_exit, (void* state)) \
#define AmrEncoderInit() \
Encoder_Interface_init(1)
#define AmrEncoderEncode(state, mode, in, out, forceSpeech) \
Encoder_Interface_Encode(state, mode, in, out, forceSpeech)
#define AmrEncoderExit(state) \
Encoder_Interface_exit(state)
#define AmrDecoderInit() \
Decoder_Interface_init()
#define AmrDecoderDecode(state, in, out, bfi) \
Decoder_Interface_Decode(state, in, out, bfi)
#define AmrDecoderExit(state) \
Decoder_Interface_exit(state)
#define AMR_OPENCORE_DESC "amr-nb OpenCore library"
static const char* const amr_opencore_library_names[] =
{
#ifdef DL_OPENCORE_AMRNB
"libopencore-amrnb",
"libopencore-amrnb-0",
#endif
NULL
};
#include "amr.h"