mirror of
https://git.ffmpeg.org/ffmpeg.git
synced 2024-12-24 08:12:44 +00:00
ee419804da
This makes it far easier to figure out which AOT belongs to which profile. Also, explicitly highlight the holes.
122 lines
6.4 KiB
C
122 lines
6.4 KiB
C
/*
|
|
* 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 */
|