70076e7e8189cc02eca9bda8c7788358ed13d80d
[libav.git] / libavcodec / mpeg4audio.h
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
27 typedef struct {
28 int object_type;
29 int sampling_index;
30 int sample_rate;
31 int chan_config;
32 int sbr; //< -1 implicit, 1 presence
33 int ext_object_type;
34 int ext_sampling_index;
35 int ext_sample_rate;
36 } MPEG4AudioConfig;
37
38 extern const int ff_mpeg4audio_sample_rates[16];
39 extern const uint8_t ff_mpeg4audio_channels[8];
40 /**
41 * Parse MPEG-4 systems extradata to retrieve audio configuration.
42 * @param[in] c MPEG4AudioConfig structure to fill.
43 * @param[in] buf Extradata from container.
44 * @param[in] buf_size Extradata size.
45 * @return On error -1 is returned, on success AudioSpecificConfig bit index in extradata.
46 */
47 int ff_mpeg4audio_get_config(MPEG4AudioConfig *c, const uint8_t *buf, int buf_size);
48
49 enum AudioObjectType {
50 AOT_NULL,
51 // Support? Name
52 AOT_AAC_MAIN, ///< Y Main
53 AOT_AAC_LC, ///< Y Low Complexity
54 AOT_AAC_SSR, ///< N (code in SoC repo) Scalable Sample Rate
55 AOT_AAC_LTP, ///< N (code in SoC repo) Long Term Prediction
56 AOT_SBR, ///< N (in progress) Spectral Band Replication
57 AOT_AAC_SCALABLE, ///< N Scalable
58 AOT_TWINVQ, ///< N Twin Vector Quantizer
59 AOT_CELP, ///< N Code Excited Linear Prediction
60 AOT_HVXC, ///< N Harmonic Vector eXcitation Coding
61 AOT_TTSI = 12, ///< N Text-To-Speech Interface
62 AOT_MAINSYNTH, ///< N Main Synthesis
63 AOT_WAVESYNTH, ///< N Wavetable Synthesis
64 AOT_MIDI, ///< N General MIDI
65 AOT_SAFX, ///< N Algorithmic Synthesis and Audio Effects
66 AOT_ER_AAC_LC, ///< N Error Resilient Low Complexity
67 AOT_ER_AAC_LTP = 19, ///< N Error Resilient Long Term Prediction
68 AOT_ER_AAC_SCALABLE, ///< N Error Resilient Scalable
69 AOT_ER_TWINVQ, ///< N Error Resilient Twin Vector Quantizer
70 AOT_ER_BSAC, ///< N Error Resilient Bit-Sliced Arithmetic Coding
71 AOT_ER_AAC_LD, ///< N Error Resilient Low Delay
72 AOT_ER_CELP, ///< N Error Resilient Code Excited Linear Prediction
73 AOT_ER_HVXC, ///< N Error Resilient Harmonic Vector eXcitation Coding
74 AOT_ER_HILN, ///< N Error Resilient Harmonic and Individual Lines plus Noise
75 AOT_ER_PARAM, ///< N Error Resilient Parametric
76 AOT_SSC, ///< N SinuSoidal Coding
77 AOT_PS, ///< N Parametric Stereo
78 AOT_SURROUND, ///< N MPEG Surround
79 AOT_ESCAPE, ///< N Escape Value
80 AOT_L1, ///< Y Layer 1
81 AOT_L2, ///< Y Layer 2
82 AOT_L3, ///< Y Layer 3
83 AOT_DST, ///< N Direct Stream Transfer
84 AOT_ALS, ///< N Audio LosslesS
85 AOT_SLS, ///< N Scalable LosslesS
86 AOT_SLS_NON_CORE, ///< N Scalable LosslesS (non core)
87 AOT_ER_AAC_ELD, ///< N Error Resilient Enhanced Low Delay
88 AOT_SMR_SIMPLE, ///< N Symbolic Music Representation Simple
89 AOT_SMR_MAIN, ///< N Symbolic Music Representation Main
90 };
91
92 #endif /* AVCODEC_MPEG4AUDIO_H */