repositories / deb_ffmpeg.git / blame
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|---|---|---|
| 2ba45a60 DM |
1 | /* |
| 2 | * MPEG-4 Audio common header | |
| 3 | * Copyright (c) 2008 Baptiste Coudurier <baptiste.coudurier@free.fr> | |
| 4 | * | |
| 5 | * This file is part of FFmpeg. | |
| 6 | * | |
| 7 | * FFmpeg is free software; you can redistribute it and/or | |
| 8 | * modify it under the terms of the GNU Lesser General Public | |
| 9 | * License as published by the Free Software Foundation; either | |
| 10 | * version 2.1 of the License, or (at your option) any later version. | |
| 11 | * | |
| 12 | * FFmpeg is distributed in the hope that it will be useful, | |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 15 | * Lesser General Public License for more details. | |
| 16 | * | |
| 17 | * You should have received a copy of the GNU Lesser General Public | |
| 18 | * License along with FFmpeg; if not, write to the Free Software | |
| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| 20 | */ | |
| 21 | ||
| 22 | #ifndef AVCODEC_MPEG4AUDIO_H | |
| 23 | #define AVCODEC_MPEG4AUDIO_H | |
| 24 | ||
| 25 | #include <stdint.h> | |
| 26 | #include "get_bits.h" | |
| 27 | #include "put_bits.h" | |
| 28 | ||
| 29 | typedef struct MPEG4AudioConfig { | |
| 30 | int object_type; | |
| 31 | int sampling_index; | |
| 32 | int sample_rate; | |
| 33 | int chan_config; | |
| 34 | int sbr; ///< -1 implicit, 1 presence | |
| 35 | int ext_object_type; | |
| 36 | int ext_sampling_index; | |
| 37 | int ext_sample_rate; | |
| 38 | int ext_chan_config; | |
| 39 | int channels; | |
| 40 | int ps; ///< -1 implicit, 1 presence | |
| 41 | } MPEG4AudioConfig; | |
| 42 | ||
| 43 | extern av_export const int avpriv_mpeg4audio_sample_rates[16]; | |
| 44 | extern const uint8_t ff_mpeg4audio_channels[8]; | |
| 45 | ||
| 46 | /** | |
| 47 | * Parse MPEG-4 systems extradata to retrieve audio configuration. | |
| 48 | * @param[in] c MPEG4AudioConfig structure to fill. | |
| 49 | * @param[in] buf Extradata from container. | |
| 50 | * @param[in] bit_size Extradata size in bits. | |
| 51 | * @param[in] sync_extension look for a sync extension after config if true. | |
| 52 | * @return On error -1 is returned, on success AudioSpecificConfig bit index in extradata. | |
| 53 | */ | |
| 54 | int avpriv_mpeg4audio_get_config(MPEG4AudioConfig *c, const uint8_t *buf, | |
| 55 | int bit_size, int sync_extension); | |
| 56 | ||
| 57 | enum AudioObjectType { | |
| 58 | AOT_NULL, | |
| 59 | // Support? Name | |
| 60 | AOT_AAC_MAIN, ///< Y Main | |
| 61 | AOT_AAC_LC, ///< Y Low Complexity | |
| 62 | AOT_AAC_SSR, ///< N (code in SoC repo) Scalable Sample Rate | |
| 63 | AOT_AAC_LTP, ///< Y Long Term Prediction | |
| 64 | AOT_SBR, ///< Y Spectral Band Replication | |
| 65 | AOT_AAC_SCALABLE, ///< N Scalable | |
| 66 | AOT_TWINVQ, ///< N Twin Vector Quantizer | |
| 67 | AOT_CELP, ///< N Code Excited Linear Prediction | |
| 68 | AOT_HVXC, ///< N Harmonic Vector eXcitation Coding | |
| 69 | AOT_TTSI = 12, ///< N Text-To-Speech Interface | |
| 70 | AOT_MAINSYNTH, ///< N Main Synthesis | |
| 71 | AOT_WAVESYNTH, ///< N Wavetable Synthesis | |
| 72 | AOT_MIDI, ///< N General MIDI | |
| 73 | AOT_SAFX, ///< N Algorithmic Synthesis and Audio Effects | |
| 74 | AOT_ER_AAC_LC, ///< N Error Resilient Low Complexity | |
| 75 | AOT_ER_AAC_LTP = 19, ///< N Error Resilient Long Term Prediction | |
| 76 | AOT_ER_AAC_SCALABLE, ///< N Error Resilient Scalable | |
| 77 | AOT_ER_TWINVQ, ///< N Error Resilient Twin Vector Quantizer | |
| 78 | AOT_ER_BSAC, ///< N Error Resilient Bit-Sliced Arithmetic Coding | |
| 79 | AOT_ER_AAC_LD, ///< N Error Resilient Low Delay | |
| 80 | AOT_ER_CELP, ///< N Error Resilient Code Excited Linear Prediction | |
| 81 | AOT_ER_HVXC, ///< N Error Resilient Harmonic Vector eXcitation Coding | |
| 82 | AOT_ER_HILN, ///< N Error Resilient Harmonic and Individual Lines plus Noise | |
| 83 | AOT_ER_PARAM, ///< N Error Resilient Parametric | |
| 84 | AOT_SSC, ///< N SinuSoidal Coding | |
| 85 | AOT_PS, ///< N Parametric Stereo | |
| 86 | AOT_SURROUND, ///< N MPEG Surround | |
| 87 | AOT_ESCAPE, ///< Y Escape Value | |
| 88 | AOT_L1, ///< Y Layer 1 | |
| 89 | AOT_L2, ///< Y Layer 2 | |
| 90 | AOT_L3, ///< Y Layer 3 | |
| 91 | AOT_DST, ///< N Direct Stream Transfer | |
| 92 | AOT_ALS, ///< Y Audio LosslesS | |
| 93 | AOT_SLS, ///< N Scalable LosslesS | |
| 94 | AOT_SLS_NON_CORE, ///< N Scalable LosslesS (non core) | |
| 95 | AOT_ER_AAC_ELD, ///< N Error Resilient Enhanced Low Delay | |
| 96 | AOT_SMR_SIMPLE, ///< N Symbolic Music Representation Simple | |
| 97 | AOT_SMR_MAIN, ///< N Symbolic Music Representation Main | |
| 98 | AOT_USAC_NOSBR, ///< N Unified Speech and Audio Coding (no SBR) | |
| 99 | AOT_SAOC, ///< N Spatial Audio Object Coding | |
| 100 | AOT_LD_SURROUND, ///< N Low Delay MPEG Surround | |
| 101 | AOT_USAC, ///< N Unified Speech and Audio Coding | |
| 102 | }; | |
| 103 | ||
| 104 | #define MAX_PCE_SIZE 304 ///<Maximum size of a PCE including the 3-bit ID_PCE | |
| 105 | ///<marker and the comment | |
| 106 | ||
| 107 | int avpriv_copy_pce_data(PutBitContext *pb, GetBitContext *gb); | |
| 108 | ||
| 109 | #endif /* AVCODEC_MPEG4AUDIO_H */ |