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libavcodec
mlp_parser.h
Go to the documentation of this file.
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/*
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* MLP parser prototypes
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* Copyright (c) 2007 Ian Caulfield
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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* MLP parser prototypes
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*/
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#ifndef AVCODEC_MLP_PARSER_H
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#define AVCODEC_MLP_PARSER_H
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#include "
get_bits.h
"
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typedef
struct
MLPHeaderInfo
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{
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int
stream_type
;
///< 0xBB for MLP, 0xBA for TrueHD
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int
group1_bits
;
///< The bit depth of the first substream
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int
group2_bits
;
///< Bit depth of the second substream (MLP only)
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int
group1_samplerate
;
///< Sample rate of first substream
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int
group2_samplerate
;
///< Sample rate of second substream (MLP only)
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int
channel_arrangement
;
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int
channels_mlp
;
///< Channel count for MLP streams
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int
channels_thd_stream1
;
///< Channel count for substream 1 of TrueHD streams ("6-channel presentation")
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int
channels_thd_stream2
;
///< Channel count for substream 2 of TrueHD streams ("8-channel presentation")
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uint64_t
channel_layout_mlp
;
///< Channel layout for MLP streams
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uint64_t
channel_layout_thd_stream1
;
///< Channel layout for substream 1 of TrueHD streams ("6-channel presentation")
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uint64_t
channel_layout_thd_stream2
;
///< Channel layout for substream 2 of TrueHD streams ("8-channel presentation")
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int
access_unit_size
;
///< Number of samples per coded frame
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int
access_unit_size_pow2
;
///< Next power of two above number of samples per frame
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int
is_vbr
;
///< Stream is VBR instead of CBR
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int
peak_bitrate
;
///< Peak bitrate for VBR, actual bitrate (==peak) for CBR
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int
num_substreams
;
///< Number of substreams within stream
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}
MLPHeaderInfo
;
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int
ff_mlp_read_major_sync
(
void
*log,
MLPHeaderInfo
*
mh
,
GetBitContext
*gb);
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uint64_t
ff_truehd_layout
(
int
chanmap);
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extern
const
uint64_t
ff_mlp_layout
[32];
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#endif
/* AVCODEC_MLP_PARSER_H */
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