| 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 | }; |