/* * MPEG-4 Audio common header * Copyright (c) 2008 Baptiste Coudurier * * 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 #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 = 0, // Support? Name AOT_AAC_MAIN = 1, ///< Y Main AOT_AAC_LC = 2, ///< Y Low Complexity AOT_AAC_SSR = 3, ///< N (code in SoC repo) Scalable Sample Rate AOT_AAC_LTP = 4, ///< Y Long Term Prediction AOT_SBR = 5, ///< Y Spectral Band Replication AOT_AAC_SCALABLE = 6, ///< N Scalable AOT_TWINVQ = 7, ///< N Twin Vector Quantizer AOT_CELP = 8, ///< N Code Excited Linear Prediction AOT_HVXC = 9, ///< N Harmonic Vector eXcitation Coding AOT_TTSI = 12, ///< N Text-To-Speech Interface AOT_MAINSYNTH = 13, ///< N Main Synthesis AOT_WAVESYNTH = 14, ///< N Wavetable Synthesis AOT_MIDI = 15, ///< N General MIDI AOT_SAFX = 16, ///< N Algorithmic Synthesis and Audio Effects AOT_ER_AAC_LC = 17, ///< N Error Resilient Low Complexity AOT_ER_AAC_LTP = 19, ///< N Error Resilient Long Term Prediction AOT_ER_AAC_SCALABLE = 20, ///< N Error Resilient Scalable AOT_ER_TWINVQ = 21, ///< N Error Resilient Twin Vector Quantizer AOT_ER_BSAC = 22, ///< N Error Resilient Bit-Sliced Arithmetic Coding AOT_ER_AAC_LD = 23, ///< N Error Resilient Low Delay AOT_ER_CELP = 24, ///< N Error Resilient Code Excited Linear Prediction AOT_ER_HVXC = 25, ///< N Error Resilient Harmonic Vector eXcitation Coding AOT_ER_HILN = 26, ///< N Error Resilient Harmonic and Individual Lines plus Noise AOT_ER_PARAM = 27, ///< N Error Resilient Parametric AOT_SSC = 28, ///< N SinuSoidal Coding AOT_PS = 29, ///< N Parametric Stereo AOT_SURROUND = 30, ///< N MPEG Surround AOT_ESCAPE = 31, ///< Y Escape Value AOT_L1 = 32, ///< Y Layer 1 AOT_L2 = 33, ///< Y Layer 2 AOT_L3 = 34, ///< Y Layer 3 AOT_DST = 35, ///< N Direct Stream Transfer AOT_ALS = 36, ///< Y Audio LosslesS AOT_SLS = 37, ///< N Scalable LosslesS AOT_SLS_NON_CORE = 38, ///< N Scalable LosslesS (non core) AOT_ER_AAC_ELD = 39, ///< N Error Resilient Enhanced Low Delay AOT_SMR_SIMPLE = 40, ///< N Symbolic Music Representation Simple AOT_SMR_MAIN = 41, ///< N Symbolic Music Representation Main AOT_USAC = 42, ///< Y Unified Speech and Audio Coding AOT_SAOC = 43, ///< N Spatial Audio Object Coding AOT_LD_SURROUND = 44, ///< N Low Delay MPEG Surround }; #define MAX_PCE_SIZE 320 ///