ref: 85f41b20df8559dc85780201603352eb66489df5
dir: /libcelt/modes.h/
/* Copyright (c) 2007-2008 CSIRO
Copyright (c) 2007-2009 Xiph.Org Foundation
Copyright (c) 2008 Gregory Maxwell
Written by Jean-Marc Valin and Gregory Maxwell */
/*
Redistribution and use in source and binary forms, with or without
modification, 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 the Xiph.org Foundation nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
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 FOUNDATION 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 MODES_H
#define MODES_H
#include "celt_types.h"
#include "celt.h"
#include "arch.h"
#include "mdct.h"
#include "pitch.h"
#include "entenc.h"
#include "entdec.h"
#define MAX_CONFIG_SIZES 5
#define CELT_BITSTREAM_VERSION 0x8000000c
#ifdef STATIC_MODES
#include "static_modes.h"
#endif
#define MAX_PERIOD 1024
#ifndef MCHANNELS
# ifdef DISABLE_STEREO
# define MCHANNELS(mode) (1)
# else
# define MCHANNELS(mode) ((mode)->nbChannels)
# endif
#endif
#ifndef CHANNELS
# ifdef DISABLE_STEREO
# define CHANNELS(_C) (1)
# else
# define CHANNELS(_C) (_C)
# endif
#endif
#ifndef OVERLAP
#define OVERLAP(mode) ((mode)->overlap)
#endif
#ifndef FRAMESIZE
#define FRAMESIZE(mode) ((mode)->mdctSize)
#endif
/** Mode definition (opaque)
@brief Mode definition
*/
struct CELTMode {
celt_uint32 marker_start;
celt_int32 Fs;
int overlap;
int nbEBands;
int effEBands;
int pitchEnd;
celt_word16 preemph[4];
const celt_int16 *eBands; /**< Definition for each "pseudo-critical band" */
celt_word16 ePredCoef;/**< Prediction coefficient for the energy encoding */
int nbAllocVectors; /**< Number of lines in the matrix below */
const unsigned char *allocVectors; /**< Number of bits in each band for several rates */
const celt_int16 * const **bits;
const celt_int16 * const *(_bits[MAX_CONFIG_SIZES]); /**< Cache for pulses->bits mapping in each band */
/* Stuff that could go in the {en,de}coder, but we save space this way */
mdct_lookup mdct;
const celt_word16 *window;
int maxLM;
int nbShortMdcts;
int shortMdctSize;
int *prob;
const celt_int16 *logN;
celt_uint32 marker_end;
};
int check_mode(const CELTMode *mode);
/* Prototypes for _ec versions of the encoder/decoder calls (not public) */
int celt_encode_with_ec(CELTEncoder * restrict st, const celt_int16 * pcm, celt_int16 * optional_resynthesis, int frame_size, unsigned char *compressed, int nbCompressedBytes, ec_enc *enc);
int celt_encode_with_ec_float(CELTEncoder * restrict st, const float * pcm, float * optional_resynthesis, int frame_size, unsigned char *compressed, int nbCompressedBytes, ec_enc *enc);
int celt_decode_with_ec(CELTDecoder * restrict st, const unsigned char *data, int len, celt_int16 * restrict pcm, int frame_size, ec_dec *dec);
int celt_decode_with_ec_float(CELTDecoder * restrict st, const unsigned char *data, int len, float * restrict pcm, int frame_size, ec_dec *dec);
#endif