Subversion Repositories Kolibri OS

Rev

Go to most recent revision | Blame | Last modification | View Log | RSS feed

  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.  
  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 channel_arrangement;
  43.     int channels_mlp;                       ///< Channel count for MLP streams
  44.     int channels_thd_stream1;               ///< Channel count for substream 1 of TrueHD streams ("6-channel presentation")
  45.     int channels_thd_stream2;               ///< Channel count for substream 2 of TrueHD streams ("8-channel presentation")
  46.     uint64_t channel_layout_mlp;            ///< Channel layout for MLP streams
  47.     uint64_t channel_layout_thd_stream1;    ///< Channel layout for substream 1 of TrueHD streams ("6-channel presentation")
  48.     uint64_t channel_layout_thd_stream2;    ///< Channel layout for substream 2 of TrueHD streams ("8-channel presentation")
  49.  
  50.     int access_unit_size;                   ///< Number of samples per coded frame
  51.     int access_unit_size_pow2;              ///< Next power of two above number of samples per frame
  52.  
  53.     int is_vbr;                             ///< Stream is VBR instead of CBR
  54.     int peak_bitrate;                       ///< Peak bitrate for VBR, actual bitrate (==peak) for CBR
  55.  
  56.     int num_substreams;                     ///< Number of substreams within stream
  57. } MLPHeaderInfo;
  58.  
  59.  
  60. int ff_mlp_read_major_sync(void *log, MLPHeaderInfo *mh, GetBitContext *gb);
  61. uint64_t ff_truehd_layout(int chanmap);
  62.  
  63. extern const uint64_t ff_mlp_layout[32];
  64.  
  65. #endif /* AVCODEC_MLP_PARSER_H */
  66.