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