Imported Debian version 2.5.3~trusty1
[deb_ffmpeg.git] / ffmpeg / libavcodec / mlp_parser.h
1 /*
2 * MLP parser prototypes
3 * Copyright (c) 2007 Ian Caulfield
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 /**
23 * @file
24 * MLP parser prototypes
25 */
26
27 #ifndef AVCODEC_MLP_PARSER_H
28 #define AVCODEC_MLP_PARSER_H
29
30 #include "get_bits.h"
31
32 typedef struct MLPHeaderInfo
33 {
34 int stream_type; ///< 0xBB for MLP, 0xBA for TrueHD
35 int header_size; ///< Size of the major sync header, in bytes
36
37 int group1_bits; ///< The bit depth of the first substream
38 int group2_bits; ///< Bit depth of the second substream (MLP only)
39
40 int group1_samplerate; ///< Sample rate of first substream
41 int group2_samplerate; ///< Sample rate of second substream (MLP only)
42
43 int channel_arrangement;
44
45 int channel_modifier_thd_stream0; ///< Channel modifier for substream 0 of TrueHD sreams ("2-channel presentation")
46 int channel_modifier_thd_stream1; ///< Channel modifier for substream 1 of TrueHD sreams ("6-channel presentation")
47 int channel_modifier_thd_stream2; ///< Channel modifier for substream 2 of TrueHD sreams ("8-channel presentation")
48
49 int channels_mlp; ///< Channel count for MLP streams
50 int channels_thd_stream1; ///< Channel count for substream 1 of TrueHD streams ("6-channel presentation")
51 int channels_thd_stream2; ///< Channel count for substream 2 of TrueHD streams ("8-channel presentation")
52 uint64_t channel_layout_mlp; ///< Channel layout for MLP streams
53 uint64_t channel_layout_thd_stream1; ///< Channel layout for substream 1 of TrueHD streams ("6-channel presentation")
54 uint64_t channel_layout_thd_stream2; ///< Channel layout for substream 2 of TrueHD streams ("8-channel presentation")
55
56 int access_unit_size; ///< Number of samples per coded frame
57 int access_unit_size_pow2; ///< Next power of two above number of samples per frame
58
59 int is_vbr; ///< Stream is VBR instead of CBR
60 int peak_bitrate; ///< Peak bitrate for VBR, actual bitrate (==peak) for CBR
61
62 int num_substreams; ///< Number of substreams within stream
63 } MLPHeaderInfo;
64
65
66 int ff_mlp_read_major_sync(void *log, MLPHeaderInfo *mh, GetBitContext *gb);
67 uint64_t ff_truehd_layout(int chanmap);
68
69 extern const uint64_t ff_mlp_layout[32];
70
71 #endif /* AVCODEC_MLP_PARSER_H */