mlp_parser.h
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1 /*
2  * MLP parser prototypes
3  * Copyright (c) 2007 Ian Caulfield
4  *
5  * This file is part of Libav.
6  *
7  * Libav 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  * Libav 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 Libav; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
27 #ifndef AVCODEC_MLP_PARSER_H
28 #define AVCODEC_MLP_PARSER_H
29 
30 #include "get_bits.h"
31 
32 typedef struct MLPHeaderInfo
33 {
35 
38 
41 
45  uint64_t channel_layout_mlp;
48 
51 
52  int is_vbr;
54 
57 
58 
59 int ff_mlp_read_major_sync(void *log, MLPHeaderInfo *mh, GetBitContext *gb);
60 
61 #endif /* AVCODEC_MLP_PARSER_H */
int channels_thd_stream1
Channel count for substream 1 of TrueHD streams ("6-channel presentation")
Definition: mlp_parser.h:43
int num_substreams
Number of substreams within stream.
Definition: mlp_parser.h:55
uint64_t channel_layout_mlp
Channel layout for MLP streams.
Definition: mlp_parser.h:45
int access_unit_size
Number of samples per coded frame.
Definition: mlp_parser.h:49
int peak_bitrate
Peak bitrate for VBR, actual bitrate (==peak) for CBR.
Definition: mlp_parser.h:53
bitstream reader API header.
int ff_mlp_read_major_sync(void *log, MLPHeaderInfo *mh, GetBitContext *gb)
Read a major sync info header - contains high level information about the stream - sample rate...
Definition: mlp_parser.c:127
int channels_mlp
Channel count for MLP streams.
Definition: mlp_parser.h:42
int is_vbr
Stream is VBR instead of CBR.
Definition: mlp_parser.h:52
int stream_type
0xBB for MLP, 0xBA for TrueHD
Definition: mlp_parser.h:34
int access_unit_size_pow2
Next power of two above number of samples per frame.
Definition: mlp_parser.h:50
int group2_bits
Bit depth of the second substream (MLP only)
Definition: mlp_parser.h:37
int channels_thd_stream2
Channel count for substream 2 of TrueHD streams ("8-channel presentation")
Definition: mlp_parser.h:44
struct MLPHeaderInfo MLPHeaderInfo
uint64_t channel_layout_thd_stream1
Channel layout for substream 1 of TrueHD streams ("6-channel presentation")
Definition: mlp_parser.h:46
uint64_t channel_layout_thd_stream2
Channel layout for substream 2 of TrueHD streams ("8-channel presentation")
Definition: mlp_parser.h:47
int group1_bits
The bit depth of the first substream.
Definition: mlp_parser.h:36
int group1_samplerate
Sample rate of first substream.
Definition: mlp_parser.h:39
int group2_samplerate
Sample rate of second substream (MLP only)
Definition: mlp_parser.h:40