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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
/*
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* MPEG-4 Audio common header
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* Copyright (c) 2008 Baptiste Coudurier <baptiste.coudurier@free.fr>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVCODEC_MPEG4AUDIO_H
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#define AVCODEC_MPEG4AUDIO_H
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#include <stdint.h>
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#include "get_bits.h"
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typedef struct MPEG4AudioConfig {
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int object_type;
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int sampling_index;
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int sample_rate;
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int chan_config;
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int sbr; ///< -1 implicit, 1 presence
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int ext_object_type;
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int ext_sampling_index;
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int ext_sample_rate;
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int ext_chan_config;
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int channels;
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int ps; ///< -1 implicit, 1 presence
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int frame_length_short;
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} MPEG4AudioConfig;
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extern const int ff_mpeg4audio_sample_rates[16];
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extern const uint8_t ff_mpeg4audio_channels[15];
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/**
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* Parse MPEG-4 systems extradata from a potentially unaligned GetBitContext to retrieve audio configuration.
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* @param[in] c MPEG4AudioConfig structure to fill.
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* @param[in] gb Extradata from container.
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* @param[in] sync_extension look for a sync extension after config if true.
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* @param[in] logctx opaque struct starting with an AVClass element, used for logging.
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* @return negative AVERROR code on error, on success AudioSpecificConfig bit index in extradata.
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*/
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int ff_mpeg4audio_get_config_gb(MPEG4AudioConfig *c, GetBitContext *gb,
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int sync_extension, void *logctx);
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/**
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* Parse MPEG-4 systems extradata from a raw buffer to retrieve audio configuration.
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* @param[in] c MPEG4AudioConfig structure to fill.
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* @param[in] buf Extradata from container.
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* @param[in] size Extradata size in bytes.
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* @param[in] sync_extension look for a sync extension after config if true.
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* @param[in] logctx opaque struct starting with an AVClass element, used for logging.
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* @return negative AVERROR code on error, AudioSpecificConfig bit index in extradata on success.
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*/
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int avpriv_mpeg4audio_get_config2(MPEG4AudioConfig *c, const uint8_t *buf,
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int size, int sync_extension, void *logctx);
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enum AudioObjectType {
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AOT_NULL = 0,
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// Support? Name
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AOT_AAC_MAIN = 1, ///< Y Main
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AOT_AAC_LC = 2, ///< Y Low Complexity
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AOT_AAC_SSR = 3, ///< N (code in SoC repo) Scalable Sample Rate
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AOT_AAC_LTP = 4, ///< Y Long Term Prediction
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AOT_SBR = 5, ///< Y Spectral Band Replication
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AOT_AAC_SCALABLE = 6, ///< N Scalable
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AOT_TWINVQ = 7, ///< N Twin Vector Quantizer
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AOT_CELP = 8, ///< N Code Excited Linear Prediction
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AOT_HVXC = 9, ///< N Harmonic Vector eXcitation Coding
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AOT_TTSI = 12, ///< N Text-To-Speech Interface
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AOT_MAINSYNTH = 13, ///< N Main Synthesis
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AOT_WAVESYNTH = 14, ///< N Wavetable Synthesis
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AOT_MIDI = 15, ///< N General MIDI
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AOT_SAFX = 16, ///< N Algorithmic Synthesis and Audio Effects
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AOT_ER_AAC_LC = 17, ///< N Error Resilient Low Complexity
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AOT_ER_AAC_LTP = 19, ///< N Error Resilient Long Term Prediction
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AOT_ER_AAC_SCALABLE = 20, ///< N Error Resilient Scalable
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AOT_ER_TWINVQ = 21, ///< N Error Resilient Twin Vector Quantizer
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AOT_ER_BSAC = 22, ///< N Error Resilient Bit-Sliced Arithmetic Coding
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AOT_ER_AAC_LD = 23, ///< N Error Resilient Low Delay
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AOT_ER_CELP = 24, ///< N Error Resilient Code Excited Linear Prediction
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AOT_ER_HVXC = 25, ///< N Error Resilient Harmonic Vector eXcitation Coding
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AOT_ER_HILN = 26, ///< N Error Resilient Harmonic and Individual Lines plus Noise
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AOT_ER_PARAM = 27, ///< N Error Resilient Parametric
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AOT_SSC = 28, ///< N SinuSoidal Coding
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AOT_PS = 29, ///< N Parametric Stereo
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AOT_SURROUND = 30, ///< N MPEG Surround
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AOT_ESCAPE = 31, ///< Y Escape Value
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AOT_L1 = 32, ///< Y Layer 1
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AOT_L2 = 33, ///< Y Layer 2
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AOT_L3 = 34, ///< Y Layer 3
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AOT_DST = 35, ///< N Direct Stream Transfer
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AOT_ALS = 36, ///< Y Audio LosslesS
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AOT_SLS = 37, ///< N Scalable LosslesS
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AOT_SLS_NON_CORE = 38, ///< N Scalable LosslesS (non core)
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AOT_ER_AAC_ELD = 39, ///< N Error Resilient Enhanced Low Delay
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AOT_SMR_SIMPLE = 40, ///< N Symbolic Music Representation Simple
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AOT_SMR_MAIN = 41, ///< N Symbolic Music Representation Main
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AOT_USAC = 42, ///< Y Unified Speech and Audio Coding
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AOT_SAOC = 43, ///< N Spatial Audio Object Coding
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AOT_LD_SURROUND = 44, ///< N Low Delay MPEG Surround
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};
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#define MAX_PCE_SIZE 320 ///<Maximum size of a PCE including the 3-bit ID_PCE
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///<marker and the comment
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#endif /* AVCODEC_MPEG4AUDIO_H */
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