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/*
* MPEG-4 Audio common header
* Copyright (c) 2008 Baptiste Coudurier <baptiste.coudurier@free.fr>
*
* This file is part of FFmpeg.
*
* FFmpeg 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.
*
* FFmpeg 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 FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVCODEC_MPEG4AUDIO_H
#define AVCODEC_MPEG4AUDIO_H
#include <stdint.h>
#include "get_bits.h"
typedef struct MPEG4AudioConfig {
int object_type;
int sampling_index;
int sample_rate;
int chan_config;
int sbr; ///< -1 implicit, 1 presence
int ext_object_type;
int ext_sampling_index;
int ext_sample_rate;
int ext_chan_config;
int channels;
int ps; ///< -1 implicit, 1 presence
int frame_length_short;
} MPEG4AudioConfig;
extern const int ff_mpeg4audio_sample_rates[16];
extern const uint8_t ff_mpeg4audio_channels[15];
/**
* Parse MPEG-4 systems extradata from a potentially unaligned GetBitContext to retrieve audio configuration.
* @param[in] c MPEG4AudioConfig structure to fill.
* @param[in] gb Extradata from container.
* @param[in] sync_extension look for a sync extension after config if true.
* @param[in] logctx opaque struct starting with an AVClass element, used for logging.
* @return negative AVERROR code on error, on success AudioSpecificConfig bit index in extradata.
*/
int ff_mpeg4audio_get_config_gb(MPEG4AudioConfig *c, GetBitContext *gb,
int sync_extension, void *logctx);
/**
* Parse MPEG-4 systems extradata from a raw buffer to retrieve audio configuration.
* @param[in] c MPEG4AudioConfig structure to fill.
* @param[in] buf Extradata from container.
* @param[in] size Extradata size in bytes.
* @param[in] sync_extension look for a sync extension after config if true.
* @param[in] logctx opaque struct starting with an AVClass element, used for logging.
* @return negative AVERROR code on error, AudioSpecificConfig bit index in extradata on success.
*/
int avpriv_mpeg4audio_get_config2(MPEG4AudioConfig *c, const uint8_t *buf,
int size, int sync_extension, void *logctx);
enum AudioObjectType {
AOT_NULL = 0,
// Support? Name
AOT_AAC_MAIN = 1, ///< Y Main
AOT_AAC_LC = 2, ///< Y Low Complexity
AOT_AAC_SSR = 3, ///< N (code in SoC repo) Scalable Sample Rate
AOT_AAC_LTP = 4, ///< Y Long Term Prediction
AOT_SBR = 5, ///< Y Spectral Band Replication
AOT_AAC_SCALABLE = 6, ///< N Scalable
AOT_TWINVQ = 7, ///< N Twin Vector Quantizer
AOT_CELP = 8, ///< N Code Excited Linear Prediction
AOT_HVXC = 9, ///< N Harmonic Vector eXcitation Coding
AOT_TTSI = 12, ///< N Text-To-Speech Interface
AOT_MAINSYNTH = 13, ///< N Main Synthesis
AOT_WAVESYNTH = 14, ///< N Wavetable Synthesis
AOT_MIDI = 15, ///< N General MIDI
AOT_SAFX = 16, ///< N Algorithmic Synthesis and Audio Effects
AOT_ER_AAC_LC = 17, ///< N Error Resilient Low Complexity
AOT_ER_AAC_LTP = 19, ///< N Error Resilient Long Term Prediction
AOT_ER_AAC_SCALABLE = 20, ///< N Error Resilient Scalable
AOT_ER_TWINVQ = 21, ///< N Error Resilient Twin Vector Quantizer
AOT_ER_BSAC = 22, ///< N Error Resilient Bit-Sliced Arithmetic Coding
AOT_ER_AAC_LD = 23, ///< N Error Resilient Low Delay
AOT_ER_CELP = 24, ///< N Error Resilient Code Excited Linear Prediction
AOT_ER_HVXC = 25, ///< N Error Resilient Harmonic Vector eXcitation Coding
AOT_ER_HILN = 26, ///< N Error Resilient Harmonic and Individual Lines plus Noise
AOT_ER_PARAM = 27, ///< N Error Resilient Parametric
AOT_SSC = 28, ///< N SinuSoidal Coding
AOT_PS = 29, ///< N Parametric Stereo
AOT_SURROUND = 30, ///< N MPEG Surround
AOT_ESCAPE = 31, ///< Y Escape Value
AOT_L1 = 32, ///< Y Layer 1
AOT_L2 = 33, ///< Y Layer 2
AOT_L3 = 34, ///< Y Layer 3
AOT_DST = 35, ///< N Direct Stream Transfer
AOT_ALS = 36, ///< Y Audio LosslesS
AOT_SLS = 37, ///< N Scalable LosslesS
AOT_SLS_NON_CORE = 38, ///< N Scalable LosslesS (non core)
AOT_ER_AAC_ELD = 39, ///< N Error Resilient Enhanced Low Delay
AOT_SMR_SIMPLE = 40, ///< N Symbolic Music Representation Simple
AOT_SMR_MAIN = 41, ///< N Symbolic Music Representation Main
AOT_USAC = 42, ///< Y Unified Speech and Audio Coding
AOT_SAOC = 43, ///< N Spatial Audio Object Coding
AOT_LD_SURROUND = 44, ///< N Low Delay MPEG Surround
};
#define MAX_PCE_SIZE 320 ///<Maximum size of a PCE including the 3-bit ID_PCE
///<marker and the comment
#endif /* AVCODEC_MPEG4AUDIO_H */
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