xref: /third_party/ffmpeg/libavcodec/alac_data.c (revision cabdff1a) 
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
24const 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
35const AVChannelLayout ff_alac_ch_layouts[ALAC_MAX_CHANNELS + 1] = {
36    AV_CHANNEL_LAYOUT_MONO,
37    AV_CHANNEL_LAYOUT_STEREO,
38    AV_CHANNEL_LAYOUT_SURROUND,
39    AV_CHANNEL_LAYOUT_4POINT0,
40    AV_CHANNEL_LAYOUT_5POINT0_BACK,
41    AV_CHANNEL_LAYOUT_5POINT1_BACK,
42    AV_CHANNEL_LAYOUT_6POINT1_BACK,
43    AV_CHANNEL_LAYOUT_7POINT1_WIDE_BACK,
44    { 0 }
45};
46
47const 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