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Diffstat (limited to 'ffmpeg/libavcodec/mpeg4audio.h')
| -rw-r--r-- | ffmpeg/libavcodec/mpeg4audio.h | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/ffmpeg/libavcodec/mpeg4audio.h b/ffmpeg/libavcodec/mpeg4audio.h new file mode 100644 index 0000000..0f41045 --- /dev/null +++ b/ffmpeg/libavcodec/mpeg4audio.h @@ -0,0 +1,109 @@ +/* + * 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" +#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 +} 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 ///<Maximum size of a PCE including the 3-bit ID_PCE + ///<marker and the comment + +int avpriv_copy_pce_data(PutBitContext *pb, GetBitContext *gb); + +#endif /* AVCODEC_MPEG4AUDIO_H */ |