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* Copyright (c) 2011 Justin Ruggles
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* This file is part of Libav.
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* Libav is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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* Libav is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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* You should have received a copy of the GNU Lesser General Public
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* License along with Libav; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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* mov 'chan' tag reading/writing.
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* @author Justin Ruggles
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#include "libavutil/audioconvert.h"
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#include "libavcodec/avcodec.h"
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* This tells which channels are present in the audio stream and the order in
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* @note We're using the channel layout tag to indicate channel order
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* when the value is greater than 0x10000. The Apple documentation has
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* some contradictions as to how this is actually supposed to be handled.
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* Core Audio File Format Spec:
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* "The high 16 bits indicates a specific ordering of the channels."
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* Core Audio Data Types Reference:
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* "These identifiers specify the channels included in a layout but
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* do not specify a particular ordering of those channels."
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enum MovChannelLayoutTag {
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MOV_CH_LAYOUT_UNKNOWN = 0xFFFF0000,
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MOV_CH_LAYOUT_USE_DESCRIPTIONS = ( 0 << 16) | 0,
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MOV_CH_LAYOUT_USE_BITMAP = ( 1 << 16) | 0,
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MOV_CH_LAYOUT_DISCRETEINORDER = (147 << 16) | 0,
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MOV_CH_LAYOUT_MONO = (100 << 16) | 1,
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MOV_CH_LAYOUT_STEREO = (101 << 16) | 2,
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MOV_CH_LAYOUT_STEREOHEADPHONES = (102 << 16) | 2,
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MOV_CH_LAYOUT_MATRIXSTEREO = (103 << 16) | 2,
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MOV_CH_LAYOUT_MIDSIDE = (104 << 16) | 2,
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MOV_CH_LAYOUT_XY = (105 << 16) | 2,
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MOV_CH_LAYOUT_BINAURAL = (106 << 16) | 2,
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MOV_CH_LAYOUT_AMBISONIC_B_FORMAT = (107 << 16) | 4,
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MOV_CH_LAYOUT_QUADRAPHONIC = (108 << 16) | 4,
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MOV_CH_LAYOUT_PENTAGONAL = (109 << 16) | 5,
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MOV_CH_LAYOUT_HEXAGONAL = (110 << 16) | 6,
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MOV_CH_LAYOUT_OCTAGONAL = (111 << 16) | 8,
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MOV_CH_LAYOUT_CUBE = (112 << 16) | 8,
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MOV_CH_LAYOUT_MPEG_3_0_A = (113 << 16) | 3,
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MOV_CH_LAYOUT_MPEG_3_0_B = (114 << 16) | 3,
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MOV_CH_LAYOUT_MPEG_4_0_A = (115 << 16) | 4,
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MOV_CH_LAYOUT_MPEG_4_0_B = (116 << 16) | 4,
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MOV_CH_LAYOUT_MPEG_5_0_A = (117 << 16) | 5,
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MOV_CH_LAYOUT_MPEG_5_0_B = (118 << 16) | 5,
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MOV_CH_LAYOUT_MPEG_5_0_C = (119 << 16) | 5,
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MOV_CH_LAYOUT_MPEG_5_0_D = (120 << 16) | 5,
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MOV_CH_LAYOUT_MPEG_5_1_A = (121 << 16) | 6,
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MOV_CH_LAYOUT_MPEG_5_1_B = (122 << 16) | 6,
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MOV_CH_LAYOUT_MPEG_5_1_C = (123 << 16) | 6,
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MOV_CH_LAYOUT_MPEG_5_1_D = (124 << 16) | 6,
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MOV_CH_LAYOUT_MPEG_6_1_A = (125 << 16) | 7,
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MOV_CH_LAYOUT_MPEG_7_1_A = (126 << 16) | 8,
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MOV_CH_LAYOUT_MPEG_7_1_B = (127 << 16) | 8,
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MOV_CH_LAYOUT_MPEG_7_1_C = (128 << 16) | 8,
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MOV_CH_LAYOUT_EMAGIC_DEFAULT_7_1 = (129 << 16) | 8,
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MOV_CH_LAYOUT_SMPTE_DTV = (130 << 16) | 8,
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MOV_CH_LAYOUT_ITU_2_1 = (131 << 16) | 3,
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MOV_CH_LAYOUT_ITU_2_2 = (132 << 16) | 4,
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MOV_CH_LAYOUT_DVD_4 = (133 << 16) | 3,
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MOV_CH_LAYOUT_DVD_5 = (134 << 16) | 4,
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MOV_CH_LAYOUT_DVD_6 = (135 << 16) | 5,
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MOV_CH_LAYOUT_DVD_10 = (136 << 16) | 4,
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MOV_CH_LAYOUT_DVD_11 = (137 << 16) | 5,
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MOV_CH_LAYOUT_DVD_18 = (138 << 16) | 5,
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MOV_CH_LAYOUT_AUDIOUNIT_6_0 = (139 << 16) | 6,
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MOV_CH_LAYOUT_AUDIOUNIT_7_0 = (140 << 16) | 7,
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MOV_CH_LAYOUT_AUDIOUNIT_7_0_FRONT = (148 << 16) | 7,
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MOV_CH_LAYOUT_AAC_6_0 = (141 << 16) | 6,
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MOV_CH_LAYOUT_AAC_6_1 = (142 << 16) | 7,
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MOV_CH_LAYOUT_AAC_7_0 = (143 << 16) | 7,
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MOV_CH_LAYOUT_AAC_OCTAGONAL = (144 << 16) | 8,
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MOV_CH_LAYOUT_TMH_10_2_STD = (145 << 16) | 16,
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MOV_CH_LAYOUT_TMH_10_2_FULL = (146 << 16) | 21,
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MOV_CH_LAYOUT_AC3_1_0_1 = (149 << 16) | 2,
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MOV_CH_LAYOUT_AC3_3_0 = (150 << 16) | 3,
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MOV_CH_LAYOUT_AC3_3_1 = (151 << 16) | 4,
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MOV_CH_LAYOUT_AC3_3_0_1 = (152 << 16) | 4,
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MOV_CH_LAYOUT_AC3_2_1_1 = (153 << 16) | 4,
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MOV_CH_LAYOUT_AC3_3_1_1 = (154 << 16) | 5,
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MOV_CH_LAYOUT_EAC3_6_0_A = (155 << 16) | 6,
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MOV_CH_LAYOUT_EAC3_7_0_A = (156 << 16) | 7,
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MOV_CH_LAYOUT_EAC3_6_1_A = (157 << 16) | 7,
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MOV_CH_LAYOUT_EAC3_6_1_B = (158 << 16) | 7,
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MOV_CH_LAYOUT_EAC3_6_1_C = (159 << 16) | 7,
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MOV_CH_LAYOUT_EAC3_7_1_A = (160 << 16) | 8,
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MOV_CH_LAYOUT_EAC3_7_1_B = (161 << 16) | 8,
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MOV_CH_LAYOUT_EAC3_7_1_C = (162 << 16) | 8,
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MOV_CH_LAYOUT_EAC3_7_1_D = (163 << 16) | 8,
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MOV_CH_LAYOUT_EAC3_7_1_E = (164 << 16) | 8,
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MOV_CH_LAYOUT_EAC3_7_1_F = (165 << 16) | 8,
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MOV_CH_LAYOUT_EAC3_7_1_G = (166 << 16) | 8,
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MOV_CH_LAYOUT_EAC3_7_1_H = (167 << 16) | 8,
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MOV_CH_LAYOUT_DTS_3_1 = (168 << 16) | 4,
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MOV_CH_LAYOUT_DTS_4_1 = (169 << 16) | 5,
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MOV_CH_LAYOUT_DTS_6_0_A = (170 << 16) | 6,
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MOV_CH_LAYOUT_DTS_6_0_B = (171 << 16) | 6,
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MOV_CH_LAYOUT_DTS_6_0_C = (172 << 16) | 6,
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MOV_CH_LAYOUT_DTS_6_1_A = (173 << 16) | 7,
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MOV_CH_LAYOUT_DTS_6_1_B = (174 << 16) | 7,
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MOV_CH_LAYOUT_DTS_6_1_C = (175 << 16) | 7,
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MOV_CH_LAYOUT_DTS_6_1_D = (182 << 16) | 7,
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MOV_CH_LAYOUT_DTS_7_0 = (176 << 16) | 7,
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MOV_CH_LAYOUT_DTS_7_1 = (177 << 16) | 8,
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MOV_CH_LAYOUT_DTS_8_0_A = (178 << 16) | 8,
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MOV_CH_LAYOUT_DTS_8_0_B = (179 << 16) | 8,
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MOV_CH_LAYOUT_DTS_8_1_A = (180 << 16) | 9,
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MOV_CH_LAYOUT_DTS_8_1_B = (181 << 16) | 9,
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struct MovChannelLayoutMap {
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static const struct MovChannelLayoutMap mov_ch_layout_map_misc[] = {
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{ MOV_CH_LAYOUT_USE_DESCRIPTIONS, 0 },
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{ MOV_CH_LAYOUT_USE_BITMAP, 0 },
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{ MOV_CH_LAYOUT_DISCRETEINORDER, 0 },
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{ MOV_CH_LAYOUT_UNKNOWN, 0 },
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{ MOV_CH_LAYOUT_TMH_10_2_STD, 0 }, // L, R, C, Vhc, Lsd, Rsd,
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// Ls, Rs, Vhl, Vhr, Lw, Rw,
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// Csd, Cs, LFE1, LFE2
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{ MOV_CH_LAYOUT_TMH_10_2_FULL, 0 }, // L, R, C, Vhc, Lsd, Rsd,
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// Ls, Rs, Vhl, Vhr, Lw, Rw,
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// Csd, Cs, LFE1, LFE2, Lc, Rc,
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static const struct MovChannelLayoutMap mov_ch_layout_map_1ch[] = {
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{ MOV_CH_LAYOUT_MONO, AV_CH_LAYOUT_MONO }, // C
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static const struct MovChannelLayoutMap mov_ch_layout_map_2ch[] = {
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{ MOV_CH_LAYOUT_STEREO, AV_CH_LAYOUT_STEREO }, // L, R
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{ MOV_CH_LAYOUT_STEREOHEADPHONES, AV_CH_LAYOUT_STEREO }, // L, R
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{ MOV_CH_LAYOUT_BINAURAL, AV_CH_LAYOUT_STEREO }, // L, R
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{ MOV_CH_LAYOUT_MIDSIDE, AV_CH_LAYOUT_STEREO }, // C, sides
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{ MOV_CH_LAYOUT_XY, AV_CH_LAYOUT_STEREO }, // X (left), Y (right)
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{ MOV_CH_LAYOUT_MATRIXSTEREO, AV_CH_LAYOUT_STEREO_DOWNMIX }, // Lt, Rt
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{ MOV_CH_LAYOUT_AC3_1_0_1, AV_CH_LAYOUT_MONO | // C, LFE
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AV_CH_LOW_FREQUENCY },
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static const struct MovChannelLayoutMap mov_ch_layout_map_3ch[] = {
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{ MOV_CH_LAYOUT_MPEG_3_0_A, AV_CH_LAYOUT_SURROUND }, // L, R, C
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{ MOV_CH_LAYOUT_MPEG_3_0_B, AV_CH_LAYOUT_SURROUND }, // C, L, R
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{ MOV_CH_LAYOUT_AC3_3_0, AV_CH_LAYOUT_SURROUND }, // L, C, R
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{ MOV_CH_LAYOUT_ITU_2_1, AV_CH_LAYOUT_2_1 }, // L, R, Cs
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{ MOV_CH_LAYOUT_DVD_4, AV_CH_LAYOUT_2POINT1 }, // L, R, LFE
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static const struct MovChannelLayoutMap mov_ch_layout_map_4ch[] = {
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{ MOV_CH_LAYOUT_AMBISONIC_B_FORMAT, 0 }, // W, X, Y, Z
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{ MOV_CH_LAYOUT_QUADRAPHONIC, AV_CH_LAYOUT_QUAD }, // L, R, Rls, Rrs
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{ MOV_CH_LAYOUT_MPEG_4_0_A, AV_CH_LAYOUT_4POINT0 }, // L, R, C, Cs
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{ MOV_CH_LAYOUT_MPEG_4_0_B, AV_CH_LAYOUT_4POINT0 }, // C, L, R, Cs
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{ MOV_CH_LAYOUT_AC3_3_1, AV_CH_LAYOUT_4POINT0 }, // L, C, R, Cs
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{ MOV_CH_LAYOUT_ITU_2_2, AV_CH_LAYOUT_2_2 }, // L, R, Ls, Rs
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{ MOV_CH_LAYOUT_DVD_5, AV_CH_LAYOUT_2_1 | // L, R, LFE, Cs
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AV_CH_LOW_FREQUENCY },
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{ MOV_CH_LAYOUT_AC3_2_1_1, AV_CH_LAYOUT_2_1 | // L, R, Cs, LFE
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AV_CH_LOW_FREQUENCY },
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{ MOV_CH_LAYOUT_DVD_10, AV_CH_LAYOUT_3POINT1 }, // L, R, C, LFE
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{ MOV_CH_LAYOUT_AC3_3_0_1, AV_CH_LAYOUT_3POINT1 }, // L, C, R, LFE
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{ MOV_CH_LAYOUT_DTS_3_1, AV_CH_LAYOUT_3POINT1 }, // C, L, R, LFE
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static const struct MovChannelLayoutMap mov_ch_layout_map_5ch[] = {
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{ MOV_CH_LAYOUT_PENTAGONAL, AV_CH_LAYOUT_5POINT0_BACK }, // L, R, Rls, Rrs, C
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{ MOV_CH_LAYOUT_MPEG_5_0_A, AV_CH_LAYOUT_5POINT0 }, // L, R, C, Ls, Rs
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{ MOV_CH_LAYOUT_MPEG_5_0_B, AV_CH_LAYOUT_5POINT0 }, // L, R, Ls, Rs, C
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{ MOV_CH_LAYOUT_MPEG_5_0_C, AV_CH_LAYOUT_5POINT0 }, // L, C, R, Ls, Rs
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{ MOV_CH_LAYOUT_MPEG_5_0_D, AV_CH_LAYOUT_5POINT0 }, // C, L, R, Ls, Rs
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{ MOV_CH_LAYOUT_DVD_6, AV_CH_LAYOUT_2_2 | // L, R, LFE, Ls, Rs
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AV_CH_LOW_FREQUENCY },
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{ MOV_CH_LAYOUT_DVD_18, AV_CH_LAYOUT_2_2 | // L, R, Ls, Rs, LFE
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AV_CH_LOW_FREQUENCY },
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{ MOV_CH_LAYOUT_DVD_11, AV_CH_LAYOUT_4POINT1 }, // L, R, C, LFE, Cs
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{ MOV_CH_LAYOUT_AC3_3_1_1, AV_CH_LAYOUT_4POINT1 }, // L, C, R, Cs, LFE
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{ MOV_CH_LAYOUT_DTS_4_1, AV_CH_LAYOUT_4POINT1 }, // C, L, R, Cs, LFE
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static const struct MovChannelLayoutMap mov_ch_layout_map_6ch[] = {
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{ MOV_CH_LAYOUT_HEXAGONAL, AV_CH_LAYOUT_HEXAGONAL }, // L, R, Rls, Rrs, C, Cs
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{ MOV_CH_LAYOUT_DTS_6_0_C, AV_CH_LAYOUT_HEXAGONAL }, // C, Cs, L, R, Rls, Rrs
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{ MOV_CH_LAYOUT_MPEG_5_1_A, AV_CH_LAYOUT_5POINT1 }, // L, R, C, LFE, Ls, Rs
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{ MOV_CH_LAYOUT_MPEG_5_1_B, AV_CH_LAYOUT_5POINT1 }, // L, R, Ls, Rs, C, LFE
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{ MOV_CH_LAYOUT_MPEG_5_1_C, AV_CH_LAYOUT_5POINT1 }, // L, C, R, Ls, Rs, LFE
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{ MOV_CH_LAYOUT_MPEG_5_1_D, AV_CH_LAYOUT_5POINT1 }, // C, L, R, Ls, Rs, LFE
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{ MOV_CH_LAYOUT_AUDIOUNIT_6_0, AV_CH_LAYOUT_6POINT0 }, // L, R, Ls, Rs, C, Cs
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{ MOV_CH_LAYOUT_AAC_6_0, AV_CH_LAYOUT_6POINT0 }, // C, L, R, Ls, Rs, Cs
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{ MOV_CH_LAYOUT_EAC3_6_0_A, AV_CH_LAYOUT_6POINT0 }, // L, C, R, Ls, Rs, Cs
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{ MOV_CH_LAYOUT_DTS_6_0_A, AV_CH_LAYOUT_6POINT0_FRONT }, // Lc, Rc, L, R, Ls, Rs
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{ MOV_CH_LAYOUT_DTS_6_0_B, AV_CH_LAYOUT_5POINT0_BACK | // C, L, R, Rls, Rrs, Ts
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static const struct MovChannelLayoutMap mov_ch_layout_map_7ch[] = {
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{ MOV_CH_LAYOUT_MPEG_6_1_A, AV_CH_LAYOUT_6POINT1 }, // L, R, C, LFE, Ls, Rs, Cs
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{ MOV_CH_LAYOUT_AAC_6_1, AV_CH_LAYOUT_6POINT1 }, // C, L, R, Ls, Rs, Cs, LFE
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{ MOV_CH_LAYOUT_EAC3_6_1_A, AV_CH_LAYOUT_6POINT1 }, // L, C, R, Ls, Rs, LFE, Cs
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{ MOV_CH_LAYOUT_DTS_6_1_D, AV_CH_LAYOUT_6POINT1 }, // C, L, R, Ls, Rs, LFE, Cs
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{ MOV_CH_LAYOUT_AUDIOUNIT_7_0, AV_CH_LAYOUT_7POINT0 }, // L, R, Ls, Rs, C, Rls, Rrs
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{ MOV_CH_LAYOUT_AAC_7_0, AV_CH_LAYOUT_7POINT0 }, // C, L, R, Ls, Rs, Rls, Rrs
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{ MOV_CH_LAYOUT_EAC3_7_0_A, AV_CH_LAYOUT_7POINT0 }, // L, C, R, Ls, Rs, Rls, Rrs
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{ MOV_CH_LAYOUT_AUDIOUNIT_7_0_FRONT, AV_CH_LAYOUT_7POINT0_FRONT }, // L, R, Ls, Rs, C, Lc, Rc
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{ MOV_CH_LAYOUT_DTS_7_0, AV_CH_LAYOUT_7POINT0_FRONT }, // Lc, C, Rc, L, R, Ls, Rs
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{ MOV_CH_LAYOUT_EAC3_6_1_B, AV_CH_LAYOUT_5POINT1 | // L, C, R, Ls, Rs, LFE, Ts
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{ MOV_CH_LAYOUT_EAC3_6_1_C, AV_CH_LAYOUT_5POINT1 | // L, C, R, Ls, Rs, LFE, Vhc
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AV_CH_TOP_FRONT_CENTER },
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{ MOV_CH_LAYOUT_DTS_6_1_A, AV_CH_LAYOUT_6POINT1_FRONT }, // Lc, Rc, L, R, Ls, Rs, LFE
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{ MOV_CH_LAYOUT_DTS_6_1_B, AV_CH_LAYOUT_5POINT1_BACK | // C, L, R, Rls, Rrs, Ts, LFE
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{ MOV_CH_LAYOUT_DTS_6_1_C, AV_CH_LAYOUT_6POINT1_BACK }, // C, Cs, L, R, Rls, Rrs, LFE
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static const struct MovChannelLayoutMap mov_ch_layout_map_8ch[] = {
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{ MOV_CH_LAYOUT_OCTAGONAL, AV_CH_LAYOUT_OCTAGONAL }, // L, R, Rls, Rrs, C, Cs, Ls, Rs
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{ MOV_CH_LAYOUT_AAC_OCTAGONAL, AV_CH_LAYOUT_OCTAGONAL }, // C, L, R, Ls, Rs, Rls, Rrs, Cs
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{ MOV_CH_LAYOUT_CUBE, AV_CH_LAYOUT_QUAD | // L, R, Rls, Rrs, Vhl, Vhr, Rlt, Rrt
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AV_CH_TOP_FRONT_LEFT |
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AV_CH_TOP_FRONT_RIGHT |
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AV_CH_TOP_BACK_LEFT |
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AV_CH_TOP_BACK_RIGHT },
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{ MOV_CH_LAYOUT_MPEG_7_1_A, AV_CH_LAYOUT_7POINT1_WIDE }, // L, R, C, LFE, Ls, Rs, Lc, Rc
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{ MOV_CH_LAYOUT_MPEG_7_1_B, AV_CH_LAYOUT_7POINT1_WIDE }, // C, Lc, Rc, L, R, Ls, Rs, LFE
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{ MOV_CH_LAYOUT_EMAGIC_DEFAULT_7_1, AV_CH_LAYOUT_7POINT1_WIDE }, // L, R, Ls, Rs, C, LFE, Lc, Rc
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{ MOV_CH_LAYOUT_EAC3_7_1_B, AV_CH_LAYOUT_7POINT1_WIDE }, // L, C, R, Ls, Rs, LFE, Lc, Rc
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{ MOV_CH_LAYOUT_DTS_7_1, AV_CH_LAYOUT_7POINT1_WIDE }, // Lc, C, Rc, L, R, Ls, Rs, LFE
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{ MOV_CH_LAYOUT_MPEG_7_1_C, AV_CH_LAYOUT_7POINT1 }, // L, R, C, LFE, Ls, Rs, Rls, Rrs
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{ MOV_CH_LAYOUT_EAC3_7_1_A, AV_CH_LAYOUT_7POINT1 }, // L, C, R, Ls, Rs, LFE, Rls, Rrs
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{ MOV_CH_LAYOUT_SMPTE_DTV, AV_CH_LAYOUT_5POINT1 | // L, R, C, LFE, Ls, Rs, Lt, Rt
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AV_CH_LAYOUT_STEREO_DOWNMIX },
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{ MOV_CH_LAYOUT_EAC3_7_1_C, AV_CH_LAYOUT_5POINT1 | // L, C, R, Ls, Rs, LFE, Lsd, Rsd
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AV_CH_SURROUND_DIRECT_LEFT |
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AV_CH_SURROUND_DIRECT_RIGHT },
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{ MOV_CH_LAYOUT_EAC3_7_1_D, AV_CH_LAYOUT_5POINT1 | // L, C, R, Ls, Rs, LFE, Lw, Rw
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{ MOV_CH_LAYOUT_EAC3_7_1_E, AV_CH_LAYOUT_5POINT1 | // L, C, R, Ls, Rs, LFE, Vhl, Vhr
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AV_CH_TOP_FRONT_LEFT |
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AV_CH_TOP_FRONT_RIGHT },
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{ MOV_CH_LAYOUT_EAC3_7_1_F, AV_CH_LAYOUT_5POINT1 | // L, C, R, Ls, Rs, LFE, Cs, Ts
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{ MOV_CH_LAYOUT_EAC3_7_1_G, AV_CH_LAYOUT_5POINT1 | // L, C, R, Ls, Rs, LFE, Cs, Vhc
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AV_CH_TOP_FRONT_CENTER },
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{ MOV_CH_LAYOUT_EAC3_7_1_H, AV_CH_LAYOUT_5POINT1 | // L, C, R, Ls, Rs, LFE, Ts, Vhc
318
AV_CH_TOP_FRONT_CENTER },
320
{ MOV_CH_LAYOUT_DTS_8_0_A, AV_CH_LAYOUT_2_2 | // Lc, Rc, L, R, Ls, Rs, Rls, Rrs
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AV_CH_FRONT_LEFT_OF_CENTER |
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AV_CH_FRONT_RIGHT_OF_CENTER },
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{ MOV_CH_LAYOUT_DTS_8_0_B, AV_CH_LAYOUT_5POINT0 | // Lc, C, Rc, L, R, Ls, Cs, Rs
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AV_CH_FRONT_LEFT_OF_CENTER |
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AV_CH_FRONT_RIGHT_OF_CENTER |
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static const struct MovChannelLayoutMap mov_ch_layout_map_9ch[] = {
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{ MOV_CH_LAYOUT_DTS_8_1_A, AV_CH_LAYOUT_2_2 | // Lc, Rc, L, R, Ls, Rs, Rls, Rrs, LFE
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AV_CH_FRONT_LEFT_OF_CENTER |
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AV_CH_FRONT_RIGHT_OF_CENTER |
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AV_CH_LOW_FREQUENCY },
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{ MOV_CH_LAYOUT_DTS_8_1_B, AV_CH_LAYOUT_7POINT1_WIDE | // Lc, C, Rc, L, R, Ls, Cs, Rs, LFE
346
static const struct MovChannelLayoutMap *mov_ch_layout_map[] = {
347
mov_ch_layout_map_misc,
348
mov_ch_layout_map_1ch,
349
mov_ch_layout_map_2ch,
350
mov_ch_layout_map_3ch,
351
mov_ch_layout_map_4ch,
352
mov_ch_layout_map_5ch,
353
mov_ch_layout_map_6ch,
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mov_ch_layout_map_7ch,
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mov_ch_layout_map_8ch,
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mov_ch_layout_map_9ch,
359
static const enum MovChannelLayoutTag mov_ch_layouts_aac[] = {
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MOV_CH_LAYOUT_STEREO,
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MOV_CH_LAYOUT_AC3_1_0_1,
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MOV_CH_LAYOUT_MPEG_3_0_B,
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MOV_CH_LAYOUT_ITU_2_1,
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MOV_CH_LAYOUT_QUADRAPHONIC,
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MOV_CH_LAYOUT_MPEG_4_0_B,
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MOV_CH_LAYOUT_ITU_2_2,
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MOV_CH_LAYOUT_AC3_2_1_1,
370
MOV_CH_LAYOUT_DTS_3_1,
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MOV_CH_LAYOUT_MPEG_5_0_D,
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MOV_CH_LAYOUT_DVD_18,
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MOV_CH_LAYOUT_DTS_4_1,
374
MOV_CH_LAYOUT_MPEG_5_1_D,
375
MOV_CH_LAYOUT_AAC_6_0,
376
MOV_CH_LAYOUT_DTS_6_0_A,
377
MOV_CH_LAYOUT_AAC_6_1,
378
MOV_CH_LAYOUT_AAC_7_0,
379
MOV_CH_LAYOUT_DTS_6_1_A,
380
MOV_CH_LAYOUT_AAC_OCTAGONAL,
381
MOV_CH_LAYOUT_MPEG_7_1_B,
382
MOV_CH_LAYOUT_DTS_8_0_A,
386
static const enum MovChannelLayoutTag mov_ch_layouts_ac3[] = {
388
MOV_CH_LAYOUT_STEREO,
389
MOV_CH_LAYOUT_AC3_1_0_1,
390
MOV_CH_LAYOUT_AC3_3_0,
391
MOV_CH_LAYOUT_ITU_2_1,
393
MOV_CH_LAYOUT_AC3_3_1,
394
MOV_CH_LAYOUT_ITU_2_2,
395
MOV_CH_LAYOUT_AC3_2_1_1,
396
MOV_CH_LAYOUT_AC3_3_0_1,
397
MOV_CH_LAYOUT_MPEG_5_0_C,
398
MOV_CH_LAYOUT_DVD_18,
399
MOV_CH_LAYOUT_AC3_3_1_1,
400
MOV_CH_LAYOUT_MPEG_5_1_C,
404
static const enum MovChannelLayoutTag mov_ch_layouts_alac[] = {
406
MOV_CH_LAYOUT_STEREO,
407
MOV_CH_LAYOUT_MPEG_3_0_B,
408
MOV_CH_LAYOUT_MPEG_4_0_B,
409
MOV_CH_LAYOUT_MPEG_5_0_D,
410
MOV_CH_LAYOUT_MPEG_5_1_D,
411
MOV_CH_LAYOUT_AAC_6_1,
412
MOV_CH_LAYOUT_MPEG_7_1_B,
416
static const struct {
417
enum CodecID codec_id;
418
const enum MovChannelLayoutTag *layouts;
419
} mov_codec_ch_layouts[] = {
420
{ CODEC_ID_AAC, mov_ch_layouts_aac },
421
{ CODEC_ID_AC3, mov_ch_layouts_ac3 },
422
{ CODEC_ID_ALAC, mov_ch_layouts_alac },
423
{ CODEC_ID_NONE, NULL },
426
uint64_t ff_mov_get_channel_layout(uint32_t tag, uint32_t bitmap)
429
const struct MovChannelLayoutMap *layout_map;
431
/* use ff_mov_get_channel_label() to build a layout instead */
432
if (tag == MOV_CH_LAYOUT_USE_DESCRIPTIONS)
435
/* handle the use of the channel bitmap */
436
if (tag == MOV_CH_LAYOUT_USE_BITMAP)
437
return bitmap < 0x40000 ? bitmap : 0;
439
/* get the layout map based on the channel count for the specified layout tag */
440
channels = tag & 0xFFFF;
443
layout_map = mov_ch_layout_map[channels];
445
/* find the channel layout for the specified layout tag */
446
for (i = 0; layout_map[i].tag != 0; i++) {
447
if (layout_map[i].tag == tag)
450
return layout_map[i].layout;
453
uint32_t ff_mov_get_channel_label(uint32_t label)
458
return 1U << (label - 1);
460
return AV_CH_STEREO_LEFT;
462
return AV_CH_STEREO_RIGHT;
466
uint32_t ff_mov_get_channel_layout_tag(enum CodecID codec_id,
467
uint64_t channel_layout,
472
const enum MovChannelLayoutTag *layouts = NULL;
474
/* find the layout list for the specified codec */
475
for (i = 0; mov_codec_ch_layouts[i].codec_id != CODEC_ID_NONE; i++) {
476
if (mov_codec_ch_layouts[i].codec_id == codec_id)
479
if (mov_codec_ch_layouts[i].codec_id != CODEC_ID_NONE)
480
layouts = mov_codec_ch_layouts[i].layouts;
484
const struct MovChannelLayoutMap *layout_map;
486
/* get the layout map based on the channel count */
487
channels = av_get_channel_layout_nb_channels(channel_layout);
490
layout_map = mov_ch_layout_map[channels];
492
/* find the layout tag for the specified channel layout */
493
for (i = 0; layouts[i] != 0; i++) {
494
if (layouts[i] & 0xFFFF != channels)
496
for (j = 0; layout_map[j].tag != 0; j++) {
497
if (layout_map[j].tag == layouts[i] &&
498
layout_map[j].layout == channel_layout)
501
if (layout_map[j].tag)
507
/* if no tag was found, use channel bitmap as a backup if possible */
508
if (tag == 0 && channel_layout > 0 && channel_layout < 0x40000) {
509
tag = MOV_CH_LAYOUT_USE_BITMAP;
510
*bitmap = (uint32_t)channel_layout;
514
/* TODO: set channel descriptions as a secondary backup */