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121 lines
6.4 KiB
121 lines
6.4 KiB
/* |
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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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