/* * MPEG-4 Audio common header * Copyright (c) 2008 Baptiste Coudurier * * This file is part of Libav. * * Libav 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. * * Libav 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 Libav; 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 #include "get_bits.h" #include "put_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 av_export const int avpriv_mpeg4audio_sample_rates[16]; extern const uint8_t ff_mpeg4audio_channels[8]; /** * Parse MPEG-4 systems extradata to retrieve audio configuration. * @param[in] c MPEG4AudioConfig structure to fill. * @param[in] buf Extradata from container. * @param[in] bit_size Extradata size in bits. * @param[in] sync_extension look for a sync extension after config if true. * @return On error -1 is returned, on success AudioSpecificConfig bit index in extradata. */ int avpriv_mpeg4audio_get_config(MPEG4AudioConfig *c, const uint8_t *buf, int bit_size, int sync_extension); 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 304 ///