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 libavcodec/mlp_parser.h 24 * MLP parser prototypes 25 */ 26 27#ifndef AVCODEC_MLP_PARSER_H 28#define AVCODEC_MLP_PARSER_H 29 30#include "bitstream.h" 31 32typedef struct MLPHeaderInfo 33{ 34 int stream_type; ///< 0xBB for MLP, 0xBA for TrueHD 35 36 int group1_bits; ///< The bit depth of the first substream 37 int group2_bits; ///< Bit depth of the second substream (MLP only) 38 39 int group1_samplerate; ///< Sample rate of first substream 40 int group2_samplerate; ///< Sample rate of second substream (MLP only) 41 42 int channels_mlp; ///< Channel arrangement for MLP streams 43 int channels_thd_stream1; ///< Channel arrangement for substream 1 of TrueHD streams (5.1) 44 int channels_thd_stream2; ///< Channel arrangement for substream 2 of TrueHD streams (7.1) 45 46 int access_unit_size; ///< Number of samples per coded frame 47 int access_unit_size_pow2; ///< Next power of two above number of samples per frame 48 49 int is_vbr; ///< Stream is VBR instead of CBR 50 int peak_bitrate; ///< Peak bitrate for VBR, actual bitrate (==peak) for CBR 51 52 int num_substreams; ///< Number of substreams within stream 53} MLPHeaderInfo; 54 55 56int ff_mlp_read_major_sync(void *log, MLPHeaderInfo *mh, GetBitContext *gb); 57 58#endif /* AVCODEC_MLP_PARSER_H */ 59 60