| /* | |
| * 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, | |
| // Support? Name | |
| AOT_AAC_MAIN, ///< Y Main | |
| AOT_AAC_LC, ///< Y Low Complexity | |
| AOT_AAC_SSR, ///< N (code in SoC repo) Scalable Sample Rate | |
| AOT_AAC_LTP, ///< Y Long Term Prediction | |
| AOT_SBR, ///< Y Spectral Band Replication | |
| AOT_AAC_SCALABLE, ///< N Scalable | |
| AOT_TWINVQ, ///< N Twin Vector Quantizer | |
| AOT_CELP, ///< N Code Excited Linear Prediction | |
| AOT_HVXC, ///< N Harmonic Vector eXcitation Coding | |
| AOT_TTSI = 12, ///< N Text-To-Speech Interface | |
| AOT_MAINSYNTH, ///< N Main Synthesis | |
| AOT_WAVESYNTH, ///< N Wavetable Synthesis | |
| AOT_MIDI, ///< N General MIDI | |
| AOT_SAFX, ///< N Algorithmic Synthesis and Audio Effects | |
| AOT_ER_AAC_LC, ///< N Error Resilient Low Complexity | |
| AOT_ER_AAC_LTP = 19, ///< N Error Resilient Long Term Prediction | |
| AOT_ER_AAC_SCALABLE, ///< N Error Resilient Scalable | |
| AOT_ER_TWINVQ, ///< N Error Resilient Twin Vector Quantizer | |
| AOT_ER_BSAC, ///< N Error Resilient Bit-Sliced Arithmetic Coding | |
| AOT_ER_AAC_LD, ///< N Error Resilient Low Delay | |
| AOT_ER_CELP, ///< N Error Resilient Code Excited Linear Prediction | |
| AOT_ER_HVXC, ///< N Error Resilient Harmonic Vector eXcitation Coding | |
| AOT_ER_HILN, ///< N Error Resilient Harmonic and Individual Lines plus Noise | |
| AOT_ER_PARAM, ///< N Error Resilient Parametric | |
| AOT_SSC, ///< N SinuSoidal Coding | |
| AOT_PS, ///< N Parametric Stereo | |
| AOT_SURROUND, ///< N MPEG Surround | |
| AOT_ESCAPE, ///< Y Escape Value | |
| AOT_L1, ///< Y Layer 1 | |
| AOT_L2, ///< Y Layer 2 | |
| AOT_L3, ///< Y Layer 3 | |
| AOT_DST, ///< N Direct Stream Transfer | |
| AOT_ALS, ///< Y Audio LosslesS | |
| AOT_SLS, ///< N Scalable LosslesS | |
| AOT_SLS_NON_CORE, ///< N Scalable LosslesS (non core) | |
| AOT_ER_AAC_ELD, ///< N Error Resilient Enhanced Low Delay | |
| AOT_SMR_SIMPLE, ///< N Symbolic Music Representation Simple | |
| AOT_SMR_MAIN, ///< N Symbolic Music Representation Main | |
| AOT_USAC_NOSBR, ///< N Unified Speech and Audio Coding (no SBR) | |
| AOT_SAOC, ///< N Spatial Audio Object Coding | |
| AOT_LD_SURROUND, ///< N Low Delay MPEG Surround | |
| AOT_USAC, ///< N Unified Speech and Audio Coding | |
| }; | |
| #define MAX_PCE_SIZE 320 ///<Maximum size of a PCE including the 3-bit ID_PCE | |
| ///<marker and the comment | |
| #endif /* AVCODEC_MPEG4AUDIO_H */ |