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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. #include "libavutil/channel_layout.h"
  22. #include "alac_data.h"
  23.  
  24. const uint8_t ff_alac_channel_layout_offsets[ALAC_MAX_CHANNELS][ALAC_MAX_CHANNELS] = {
  25.     { 0 },
  26.     { 0, 1 },
  27.     { 2, 0, 1 },
  28.     { 2, 0, 1, 3 },
  29.     { 2, 0, 1, 3, 4 },
  30.     { 2, 0, 1, 4, 5, 3 },
  31.     { 2, 0, 1, 4, 5, 6, 3 },
  32.     { 2, 6, 7, 0, 1, 4, 5, 3 }
  33. };
  34.  
  35. const uint64_t ff_alac_channel_layouts[ALAC_MAX_CHANNELS + 1] = {
  36.     AV_CH_LAYOUT_MONO,
  37.     AV_CH_LAYOUT_STEREO,
  38.     AV_CH_LAYOUT_SURROUND,
  39.     AV_CH_LAYOUT_4POINT0,
  40.     AV_CH_LAYOUT_5POINT0_BACK,
  41.     AV_CH_LAYOUT_5POINT1_BACK,
  42.     AV_CH_LAYOUT_6POINT1_BACK,
  43.     AV_CH_LAYOUT_7POINT1_WIDE_BACK,
  44.     0
  45. };
  46.  
  47. const enum AlacRawDataBlockType ff_alac_channel_elements[ALAC_MAX_CHANNELS][5] = {
  48.     { TYPE_SCE,                                         },
  49.     { TYPE_CPE,                                         },
  50.     { TYPE_SCE, TYPE_CPE,                               },
  51.     { TYPE_SCE, TYPE_CPE, TYPE_SCE                      },
  52.     { TYPE_SCE, TYPE_CPE, TYPE_CPE,                     },
  53.     { TYPE_SCE, TYPE_CPE, TYPE_CPE, TYPE_SCE,           },
  54.     { TYPE_SCE, TYPE_CPE, TYPE_CPE, TYPE_SCE, TYPE_SCE, },
  55.     { TYPE_SCE, TYPE_CPE, TYPE_CPE, TYPE_CPE, TYPE_SCE, },
  56. };
  57.