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#include "get_bits.h"
27#include "put_bits.h"
28
29typedef struct {
30    int object_type;
31    int sampling_index;
32    int sample_rate;
33    int chan_config;
34    int sbr; //< -1 implicit, 1 presence
35    int ext_object_type;
36    int ext_sampling_index;
37    int ext_sample_rate;
38    int ext_chan_config;
39    int channels;
40    int ps;  //< -1 implicit, 1 presence
41} MPEG4AudioConfig;
42
43extern const int ff_mpeg4audio_sample_rates[16];
44extern const uint8_t ff_mpeg4audio_channels[8];
45/**
46 * Parse MPEG-4 systems extradata to retrieve audio configuration.
47 * @param[in] c        MPEG4AudioConfig structure to fill.
48 * @param[in] buf      Extradata from container.
49 * @param[in] buf_size Extradata size.
50 * @return On error -1 is returned, on success AudioSpecificConfig bit index in extradata.
51 */
52int ff_mpeg4audio_get_config(MPEG4AudioConfig *c, const uint8_t *buf, int buf_size);
53
54enum AudioObjectType {
55    AOT_NULL,
56                               // Support?                Name
57    AOT_AAC_MAIN,              ///< Y                       Main
58    AOT_AAC_LC,                ///< Y                       Low Complexity
59    AOT_AAC_SSR,               ///< N (code in SoC repo)    Scalable Sample Rate
60    AOT_AAC_LTP,               ///< N (code in SoC repo)    Long Term Prediction
61    AOT_SBR,                   ///< Y                       Spectral Band Replication
62    AOT_AAC_SCALABLE,          ///< N                       Scalable
63    AOT_TWINVQ,                ///< N                       Twin Vector Quantizer
64    AOT_CELP,                  ///< N                       Code Excited Linear Prediction
65    AOT_HVXC,                  ///< N                       Harmonic Vector eXcitation Coding
66    AOT_TTSI             = 12, ///< N                       Text-To-Speech Interface
67    AOT_MAINSYNTH,             ///< N                       Main Synthesis
68    AOT_WAVESYNTH,             ///< N                       Wavetable Synthesis
69    AOT_MIDI,                  ///< N                       General MIDI
70    AOT_SAFX,                  ///< N                       Algorithmic Synthesis and Audio Effects
71    AOT_ER_AAC_LC,             ///< N                       Error Resilient Low Complexity
72    AOT_ER_AAC_LTP       = 19, ///< N                       Error Resilient Long Term Prediction
73    AOT_ER_AAC_SCALABLE,       ///< N                       Error Resilient Scalable
74    AOT_ER_TWINVQ,             ///< N                       Error Resilient Twin Vector Quantizer
75    AOT_ER_BSAC,               ///< N                       Error Resilient Bit-Sliced Arithmetic Coding
76    AOT_ER_AAC_LD,             ///< N                       Error Resilient Low Delay
77    AOT_ER_CELP,               ///< N                       Error Resilient Code Excited Linear Prediction
78    AOT_ER_HVXC,               ///< N                       Error Resilient Harmonic Vector eXcitation Coding
79    AOT_ER_HILN,               ///< N                       Error Resilient Harmonic and Individual Lines plus Noise
80    AOT_ER_PARAM,              ///< N                       Error Resilient Parametric
81    AOT_SSC,                   ///< N                       SinuSoidal Coding
82    AOT_PS,                    ///< N                       Parametric Stereo
83    AOT_SURROUND,              ///< N                       MPEG Surround
84    AOT_ESCAPE,                ///< Y                       Escape Value
85    AOT_L1,                    ///< Y                       Layer 1
86    AOT_L2,                    ///< Y                       Layer 2
87    AOT_L3,                    ///< Y                       Layer 3
88    AOT_DST,                   ///< N                       Direct Stream Transfer
89    AOT_ALS,                   ///< Y                       Audio LosslesS
90    AOT_SLS,                   ///< N                       Scalable LosslesS
91    AOT_SLS_NON_CORE,          ///< N                       Scalable LosslesS (non core)
92    AOT_ER_AAC_ELD,            ///< N                       Error Resilient Enhanced Low Delay
93    AOT_SMR_SIMPLE,            ///< N                       Symbolic Music Representation Simple
94    AOT_SMR_MAIN,              ///< N                       Symbolic Music Representation Main
95    AOT_USAC_NOSBR,            ///< N                       Unified Speech and Audio Coding (no SBR)
96    AOT_SAOC,                  ///< N                       Spatial Audio Object Coding
97    AOT_LD_SURROUND,           ///< N                       Low Delay MPEG Surround
98    AOT_USAC,                  ///< N                       Unified Speech and Audio Coding
99};
100
101#define MAX_PCE_SIZE 304 ///<Maximum size of a PCE including the 3-bit ID_PCE
102                         ///<marker and the comment
103
104int ff_copy_pce_data(PutBitContext *pb, GetBitContext *gb);
105
106#endif /* AVCODEC_MPEG4AUDIO_H */
107