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105 lines
5.6 KiB
105 lines
5.6 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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#include "put_bits.h" |
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typedef struct { |
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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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} MPEG4AudioConfig; |
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extern const int ff_mpeg4audio_sample_rates[16]; |
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extern const uint8_t ff_mpeg4audio_channels[8]; |
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/** |
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* Parse MPEG-4 systems extradata 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] buf_size Extradata size. |
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* @return On error -1 is returned, on success AudioSpecificConfig bit index in extradata. |
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*/ |
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int ff_mpeg4audio_get_config(MPEG4AudioConfig *c, const uint8_t *buf, int buf_size); |
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enum AudioObjectType { |
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AOT_NULL, |
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// Support? Name |
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AOT_AAC_MAIN, ///< Y Main |
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AOT_AAC_LC, ///< Y Low Complexity |
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AOT_AAC_SSR, ///< N (code in SoC repo) Scalable Sample Rate |
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AOT_AAC_LTP, ///< N (code in SoC repo) Long Term Prediction |
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AOT_SBR, ///< N (in progress) Spectral Band Replication |
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AOT_AAC_SCALABLE, ///< N Scalable |
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AOT_TWINVQ, ///< N Twin Vector Quantizer |
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AOT_CELP, ///< N Code Excited Linear Prediction |
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AOT_HVXC, ///< N Harmonic Vector eXcitation Coding |
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AOT_TTSI = 12, ///< N Text-To-Speech Interface |
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AOT_MAINSYNTH, ///< N Main Synthesis |
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AOT_WAVESYNTH, ///< N Wavetable Synthesis |
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AOT_MIDI, ///< N General MIDI |
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AOT_SAFX, ///< N Algorithmic Synthesis and Audio Effects |
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AOT_ER_AAC_LC, ///< 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, ///< N Error Resilient Scalable |
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AOT_ER_TWINVQ, ///< N Error Resilient Twin Vector Quantizer |
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AOT_ER_BSAC, ///< N Error Resilient Bit-Sliced Arithmetic Coding |
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AOT_ER_AAC_LD, ///< N Error Resilient Low Delay |
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AOT_ER_CELP, ///< N Error Resilient Code Excited Linear Prediction |
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AOT_ER_HVXC, ///< N Error Resilient Harmonic Vector eXcitation Coding |
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AOT_ER_HILN, ///< N Error Resilient Harmonic and Individual Lines plus Noise |
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AOT_ER_PARAM, ///< N Error Resilient Parametric |
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AOT_SSC, ///< N SinuSoidal Coding |
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AOT_PS, ///< N Parametric Stereo |
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AOT_SURROUND, ///< N MPEG Surround |
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AOT_ESCAPE, ///< Y Escape Value |
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AOT_L1, ///< Y Layer 1 |
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AOT_L2, ///< Y Layer 2 |
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AOT_L3, ///< Y Layer 3 |
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AOT_DST, ///< N Direct Stream Transfer |
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AOT_ALS, ///< N Audio LosslesS |
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AOT_SLS, ///< N Scalable LosslesS |
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AOT_SLS_NON_CORE, ///< N Scalable LosslesS (non core) |
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AOT_ER_AAC_ELD, ///< N Error Resilient Enhanced Low Delay |
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AOT_SMR_SIMPLE, ///< N Symbolic Music Representation Simple |
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AOT_SMR_MAIN, ///< N Symbolic Music Representation Main |
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AOT_USAC_NOSBR, ///< N Unified Speech and Audio Coding (no SBR) |
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AOT_SAOC, ///< N Spatial Audio Object Coding |
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AOT_LD_SURROUND, ///< N Low Delay MPEG Surround |
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AOT_USAC, ///< N Unified Speech and Audio Coding |
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}; |
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#define MAX_PCE_SIZE 304 ///<Maximum size of a PCE including the 3-bit ID_PCE |
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///<marker and the comment |
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int ff_copy_pce_data(PutBitContext *pb, GetBitContext *gb); |
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#endif /* AVCODEC_MPEG4AUDIO_H */
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