yading@10: /*
yading@10:  * MLP parser prototypes
yading@10:  * Copyright (c) 2007 Ian Caulfield
yading@10:  *
yading@10:  * This file is part of FFmpeg.
yading@10:  *
yading@10:  * FFmpeg is free software; you can redistribute it and/or
yading@10:  * modify it under the terms of the GNU Lesser General Public
yading@10:  * License as published by the Free Software Foundation; either
yading@10:  * version 2.1 of the License, or (at your option) any later version.
yading@10:  *
yading@10:  * FFmpeg is distributed in the hope that it will be useful,
yading@10:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
yading@10:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
yading@10:  * Lesser General Public License for more details.
yading@10:  *
yading@10:  * You should have received a copy of the GNU Lesser General Public
yading@10:  * License along with FFmpeg; if not, write to the Free Software
yading@10:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
yading@10:  */
yading@10: 
yading@10: /**
yading@10:  * @file
yading@10:  * MLP parser prototypes
yading@10:  */
yading@10: 
yading@10: #ifndef AVCODEC_MLP_PARSER_H
yading@10: #define AVCODEC_MLP_PARSER_H
yading@10: 
yading@10: #include "get_bits.h"
yading@10: 
yading@10: typedef struct MLPHeaderInfo
yading@10: {
yading@10:     int stream_type;                        ///< 0xBB for MLP, 0xBA for TrueHD
yading@10: 
yading@10:     int group1_bits;                        ///< The bit depth of the first substream
yading@10:     int group2_bits;                        ///< Bit depth of the second substream (MLP only)
yading@10: 
yading@10:     int group1_samplerate;                  ///< Sample rate of first substream
yading@10:     int group2_samplerate;                  ///< Sample rate of second substream (MLP only)
yading@10: 
yading@10:     int channel_arrangement;
yading@10:     int channels_mlp;                       ///< Channel count for MLP streams
yading@10:     int channels_thd_stream1;               ///< Channel count for substream 1 of TrueHD streams ("6-channel presentation")
yading@10:     int channels_thd_stream2;               ///< Channel count for substream 2 of TrueHD streams ("8-channel presentation")
yading@10:     uint64_t channel_layout_mlp;            ///< Channel layout for MLP streams
yading@10:     uint64_t channel_layout_thd_stream1;    ///< Channel layout for substream 1 of TrueHD streams ("6-channel presentation")
yading@10:     uint64_t channel_layout_thd_stream2;    ///< Channel layout for substream 2 of TrueHD streams ("8-channel presentation")
yading@10: 
yading@10:     int access_unit_size;                   ///< Number of samples per coded frame
yading@10:     int access_unit_size_pow2;              ///< Next power of two above number of samples per frame
yading@10: 
yading@10:     int is_vbr;                             ///< Stream is VBR instead of CBR
yading@10:     int peak_bitrate;                       ///< Peak bitrate for VBR, actual bitrate (==peak) for CBR
yading@10: 
yading@10:     int num_substreams;                     ///< Number of substreams within stream
yading@10: } MLPHeaderInfo;
yading@10: 
yading@10: 
yading@10: int ff_mlp_read_major_sync(void *log, MLPHeaderInfo *mh, GetBitContext *gb);
yading@10: uint64_t ff_truehd_layout(int chanmap);
yading@10: 
yading@10: extern const uint64_t ff_mlp_layout[32];
yading@10: 
yading@10: #endif /* AVCODEC_MLP_PARSER_H */