libavcodec/alac_data.c

   1 /*
   2  * ALAC encoder and decoder common data
   3  *
   4  * This file is part of Libav.
   5  *
   6  * Libav 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  * Libav 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 Libav; 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 };