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  1. /*
  2.  * ALAC encoder and decoder common data
  3.  *
  4.  * This file is part of FFmpeg.
  5.  *
  6.  * FFmpeg is free software; you can redistribute it and/or
  7.  * modify it under the terms of the GNU Lesser General Public
  8.  * License as published by the Free Software Foundation; either
  9.  * version 2.1 of the License, or (at your option) any later version.
  10.  *
  11.  * FFmpeg is distributed in the hope that it will be useful,
  12.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14.  * Lesser General Public License for more details.
  15.  *
  16.  * You should have received a copy of the GNU Lesser General Public
  17.  * License along with FFmpeg; if not, write to the Free Software
  18.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  19.  */
  20.  
  21. #ifndef AVCODEC_ALAC_DATA_H
  22. #define AVCODEC_ALAC_DATA_H
  23.  
  24. #include <stdint.h>
  25.  
  26. enum AlacRawDataBlockType {
  27.     /* At the moment, only SCE, CPE, LFE, and END are recognized. */
  28.     TYPE_SCE,
  29.     TYPE_CPE,
  30.     TYPE_CCE,
  31.     TYPE_LFE,
  32.     TYPE_DSE,
  33.     TYPE_PCE,
  34.     TYPE_FIL,
  35.     TYPE_END
  36. };
  37.  
  38. #define ALAC_MAX_CHANNELS 8
  39.  
  40. extern const uint8_t ff_alac_channel_layout_offsets[ALAC_MAX_CHANNELS][ALAC_MAX_CHANNELS];
  41.  
  42. extern const uint64_t ff_alac_channel_layouts[ALAC_MAX_CHANNELS + 1];
  43.  
  44. extern const enum AlacRawDataBlockType ff_alac_channel_elements[ALAC_MAX_CHANNELS][5];
  45.  
  46. #endif /* AVCODEC_ALAC_DATA_H */
  47.