| 1 | /* |
| 2 | * Copyright (c) 2011 Justin Ruggles |
| 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 | /** |
| 22 | * mov 'chan' tag reading/writing. |
| 23 | * @author Justin Ruggles |
| 24 | */ |
| 25 | |
| 26 | #include <stdint.h> |
| 27 | |
| 28 | #include "libavutil/channel_layout.h" |
| 29 | #include "libavcodec/avcodec.h" |
| 30 | #include "mov_chan.h" |
| 31 | |
| 32 | /** |
| 33 | * Channel Layout Tag |
| 34 | * This tells which channels are present in the audio stream and the order in |
| 35 | * which they appear. |
| 36 | * |
| 37 | * @note We're using the channel layout tag to indicate channel order |
| 38 | * when the value is greater than 0x10000. The Apple documentation has |
| 39 | * some contradictions as to how this is actually supposed to be handled. |
| 40 | * |
| 41 | * Core Audio File Format Spec: |
| 42 | * "The high 16 bits indicates a specific ordering of the channels." |
| 43 | * Core Audio Data Types Reference: |
| 44 | * "These identifiers specify the channels included in a layout but |
| 45 | * do not specify a particular ordering of those channels." |
| 46 | */ |
| 47 | enum MovChannelLayoutTag { |
| 48 | MOV_CH_LAYOUT_UNKNOWN = 0xFFFF0000, |
| 49 | MOV_CH_LAYOUT_USE_DESCRIPTIONS = ( 0 << 16) | 0, |
| 50 | MOV_CH_LAYOUT_USE_BITMAP = ( 1 << 16) | 0, |
| 51 | MOV_CH_LAYOUT_DISCRETEINORDER = (147 << 16) | 0, |
| 52 | MOV_CH_LAYOUT_MONO = (100 << 16) | 1, |
| 53 | MOV_CH_LAYOUT_STEREO = (101 << 16) | 2, |
| 54 | MOV_CH_LAYOUT_STEREOHEADPHONES = (102 << 16) | 2, |
| 55 | MOV_CH_LAYOUT_MATRIXSTEREO = (103 << 16) | 2, |
| 56 | MOV_CH_LAYOUT_MIDSIDE = (104 << 16) | 2, |
| 57 | MOV_CH_LAYOUT_XY = (105 << 16) | 2, |
| 58 | MOV_CH_LAYOUT_BINAURAL = (106 << 16) | 2, |
| 59 | MOV_CH_LAYOUT_AMBISONIC_B_FORMAT = (107 << 16) | 4, |
| 60 | MOV_CH_LAYOUT_QUADRAPHONIC = (108 << 16) | 4, |
| 61 | MOV_CH_LAYOUT_PENTAGONAL = (109 << 16) | 5, |
| 62 | MOV_CH_LAYOUT_HEXAGONAL = (110 << 16) | 6, |
| 63 | MOV_CH_LAYOUT_OCTAGONAL = (111 << 16) | 8, |
| 64 | MOV_CH_LAYOUT_CUBE = (112 << 16) | 8, |
| 65 | MOV_CH_LAYOUT_MPEG_3_0_A = (113 << 16) | 3, |
| 66 | MOV_CH_LAYOUT_MPEG_3_0_B = (114 << 16) | 3, |
| 67 | MOV_CH_LAYOUT_MPEG_4_0_A = (115 << 16) | 4, |
| 68 | MOV_CH_LAYOUT_MPEG_4_0_B = (116 << 16) | 4, |
| 69 | MOV_CH_LAYOUT_MPEG_5_0_A = (117 << 16) | 5, |
| 70 | MOV_CH_LAYOUT_MPEG_5_0_B = (118 << 16) | 5, |
| 71 | MOV_CH_LAYOUT_MPEG_5_0_C = (119 << 16) | 5, |
| 72 | MOV_CH_LAYOUT_MPEG_5_0_D = (120 << 16) | 5, |
| 73 | MOV_CH_LAYOUT_MPEG_5_1_A = (121 << 16) | 6, |
| 74 | MOV_CH_LAYOUT_MPEG_5_1_B = (122 << 16) | 6, |
| 75 | MOV_CH_LAYOUT_MPEG_5_1_C = (123 << 16) | 6, |
| 76 | MOV_CH_LAYOUT_MPEG_5_1_D = (124 << 16) | 6, |
| 77 | MOV_CH_LAYOUT_MPEG_6_1_A = (125 << 16) | 7, |
| 78 | MOV_CH_LAYOUT_MPEG_7_1_A = (126 << 16) | 8, |
| 79 | MOV_CH_LAYOUT_MPEG_7_1_B = (127 << 16) | 8, |
| 80 | MOV_CH_LAYOUT_MPEG_7_1_C = (128 << 16) | 8, |
| 81 | MOV_CH_LAYOUT_EMAGIC_DEFAULT_7_1 = (129 << 16) | 8, |
| 82 | MOV_CH_LAYOUT_SMPTE_DTV = (130 << 16) | 8, |
| 83 | MOV_CH_LAYOUT_ITU_2_1 = (131 << 16) | 3, |
| 84 | MOV_CH_LAYOUT_ITU_2_2 = (132 << 16) | 4, |
| 85 | MOV_CH_LAYOUT_DVD_4 = (133 << 16) | 3, |
| 86 | MOV_CH_LAYOUT_DVD_5 = (134 << 16) | 4, |
| 87 | MOV_CH_LAYOUT_DVD_6 = (135 << 16) | 5, |
| 88 | MOV_CH_LAYOUT_DVD_10 = (136 << 16) | 4, |
| 89 | MOV_CH_LAYOUT_DVD_11 = (137 << 16) | 5, |
| 90 | MOV_CH_LAYOUT_DVD_18 = (138 << 16) | 5, |
| 91 | MOV_CH_LAYOUT_AUDIOUNIT_6_0 = (139 << 16) | 6, |
| 92 | MOV_CH_LAYOUT_AUDIOUNIT_7_0 = (140 << 16) | 7, |
| 93 | MOV_CH_LAYOUT_AUDIOUNIT_7_0_FRONT = (148 << 16) | 7, |
| 94 | MOV_CH_LAYOUT_AAC_6_0 = (141 << 16) | 6, |
| 95 | MOV_CH_LAYOUT_AAC_6_1 = (142 << 16) | 7, |
| 96 | MOV_CH_LAYOUT_AAC_7_0 = (143 << 16) | 7, |
| 97 | MOV_CH_LAYOUT_AAC_OCTAGONAL = (144 << 16) | 8, |
| 98 | MOV_CH_LAYOUT_TMH_10_2_STD = (145 << 16) | 16, |
| 99 | MOV_CH_LAYOUT_TMH_10_2_FULL = (146 << 16) | 21, |
| 100 | MOV_CH_LAYOUT_AC3_1_0_1 = (149 << 16) | 2, |
| 101 | MOV_CH_LAYOUT_AC3_3_0 = (150 << 16) | 3, |
| 102 | MOV_CH_LAYOUT_AC3_3_1 = (151 << 16) | 4, |
| 103 | MOV_CH_LAYOUT_AC3_3_0_1 = (152 << 16) | 4, |
| 104 | MOV_CH_LAYOUT_AC3_2_1_1 = (153 << 16) | 4, |
| 105 | MOV_CH_LAYOUT_AC3_3_1_1 = (154 << 16) | 5, |
| 106 | MOV_CH_LAYOUT_EAC3_6_0_A = (155 << 16) | 6, |
| 107 | MOV_CH_LAYOUT_EAC3_7_0_A = (156 << 16) | 7, |
| 108 | MOV_CH_LAYOUT_EAC3_6_1_A = (157 << 16) | 7, |
| 109 | MOV_CH_LAYOUT_EAC3_6_1_B = (158 << 16) | 7, |
| 110 | MOV_CH_LAYOUT_EAC3_6_1_C = (159 << 16) | 7, |
| 111 | MOV_CH_LAYOUT_EAC3_7_1_A = (160 << 16) | 8, |
| 112 | MOV_CH_LAYOUT_EAC3_7_1_B = (161 << 16) | 8, |
| 113 | MOV_CH_LAYOUT_EAC3_7_1_C = (162 << 16) | 8, |
| 114 | MOV_CH_LAYOUT_EAC3_7_1_D = (163 << 16) | 8, |
| 115 | MOV_CH_LAYOUT_EAC3_7_1_E = (164 << 16) | 8, |
| 116 | MOV_CH_LAYOUT_EAC3_7_1_F = (165 << 16) | 8, |
| 117 | MOV_CH_LAYOUT_EAC3_7_1_G = (166 << 16) | 8, |
| 118 | MOV_CH_LAYOUT_EAC3_7_1_H = (167 << 16) | 8, |
| 119 | MOV_CH_LAYOUT_DTS_3_1 = (168 << 16) | 4, |
| 120 | MOV_CH_LAYOUT_DTS_4_1 = (169 << 16) | 5, |
| 121 | MOV_CH_LAYOUT_DTS_6_0_A = (170 << 16) | 6, |
| 122 | MOV_CH_LAYOUT_DTS_6_0_B = (171 << 16) | 6, |
| 123 | MOV_CH_LAYOUT_DTS_6_0_C = (172 << 16) | 6, |
| 124 | MOV_CH_LAYOUT_DTS_6_1_A = (173 << 16) | 7, |
| 125 | MOV_CH_LAYOUT_DTS_6_1_B = (174 << 16) | 7, |
| 126 | MOV_CH_LAYOUT_DTS_6_1_C = (175 << 16) | 7, |
| 127 | MOV_CH_LAYOUT_DTS_6_1_D = (182 << 16) | 7, |
| 128 | MOV_CH_LAYOUT_DTS_7_0 = (176 << 16) | 7, |
| 129 | MOV_CH_LAYOUT_DTS_7_1 = (177 << 16) | 8, |
| 130 | MOV_CH_LAYOUT_DTS_8_0_A = (178 << 16) | 8, |
| 131 | MOV_CH_LAYOUT_DTS_8_0_B = (179 << 16) | 8, |
| 132 | MOV_CH_LAYOUT_DTS_8_1_A = (180 << 16) | 9, |
| 133 | MOV_CH_LAYOUT_DTS_8_1_B = (181 << 16) | 9, |
| 134 | }; |
| 135 | |
| 136 | struct MovChannelLayoutMap { |
| 137 | uint32_t tag; |
| 138 | uint64_t layout; |
| 139 | }; |
| 140 | |
| 141 | static const struct MovChannelLayoutMap mov_ch_layout_map_misc[] = { |
| 142 | { MOV_CH_LAYOUT_USE_DESCRIPTIONS, 0 }, |
| 143 | { MOV_CH_LAYOUT_USE_BITMAP, 0 }, |
| 144 | { MOV_CH_LAYOUT_DISCRETEINORDER, 0 }, |
| 145 | { MOV_CH_LAYOUT_UNKNOWN, 0 }, |
| 146 | { MOV_CH_LAYOUT_TMH_10_2_STD, 0 }, // L, R, C, Vhc, Lsd, Rsd, |
| 147 | // Ls, Rs, Vhl, Vhr, Lw, Rw, |
| 148 | // Csd, Cs, LFE1, LFE2 |
| 149 | { MOV_CH_LAYOUT_TMH_10_2_FULL, 0 }, // L, R, C, Vhc, Lsd, Rsd, |
| 150 | // Ls, Rs, Vhl, Vhr, Lw, Rw, |
| 151 | // Csd, Cs, LFE1, LFE2, Lc, Rc, |
| 152 | // HI, VI, Haptic |
| 153 | { 0, 0 }, |
| 154 | }; |
| 155 | |
| 156 | static const struct MovChannelLayoutMap mov_ch_layout_map_1ch[] = { |
| 157 | { MOV_CH_LAYOUT_MONO, AV_CH_LAYOUT_MONO }, // C |
| 158 | { 0, 0 }, |
| 159 | }; |
| 160 | |
| 161 | static const struct MovChannelLayoutMap mov_ch_layout_map_2ch[] = { |
| 162 | { MOV_CH_LAYOUT_STEREO, AV_CH_LAYOUT_STEREO }, // L, R |
| 163 | { MOV_CH_LAYOUT_STEREOHEADPHONES, AV_CH_LAYOUT_STEREO }, // L, R |
| 164 | { MOV_CH_LAYOUT_BINAURAL, AV_CH_LAYOUT_STEREO }, // L, R |
| 165 | { MOV_CH_LAYOUT_MIDSIDE, AV_CH_LAYOUT_STEREO }, // C, sides |
| 166 | { MOV_CH_LAYOUT_XY, AV_CH_LAYOUT_STEREO }, // X (left), Y (right) |
| 167 | |
| 168 | { MOV_CH_LAYOUT_MATRIXSTEREO, AV_CH_LAYOUT_STEREO_DOWNMIX }, // Lt, Rt |
| 169 | |
| 170 | { MOV_CH_LAYOUT_AC3_1_0_1, AV_CH_LAYOUT_MONO | // C, LFE |
| 171 | AV_CH_LOW_FREQUENCY }, |
| 172 | { 0, 0 }, |
| 173 | }; |
| 174 | |
| 175 | static const struct MovChannelLayoutMap mov_ch_layout_map_3ch[] = { |
| 176 | { MOV_CH_LAYOUT_MPEG_3_0_A, AV_CH_LAYOUT_SURROUND }, // L, R, C |
| 177 | { MOV_CH_LAYOUT_MPEG_3_0_B, AV_CH_LAYOUT_SURROUND }, // C, L, R |
| 178 | { MOV_CH_LAYOUT_AC3_3_0, AV_CH_LAYOUT_SURROUND }, // L, C, R |
| 179 | |
| 180 | { MOV_CH_LAYOUT_ITU_2_1, AV_CH_LAYOUT_2_1 }, // L, R, Cs |
| 181 | |
| 182 | { MOV_CH_LAYOUT_DVD_4, AV_CH_LAYOUT_2POINT1 }, // L, R, LFE |
| 183 | { 0, 0 }, |
| 184 | }; |
| 185 | |
| 186 | static const struct MovChannelLayoutMap mov_ch_layout_map_4ch[] = { |
| 187 | { MOV_CH_LAYOUT_AMBISONIC_B_FORMAT, 0 }, // W, X, Y, Z |
| 188 | |
| 189 | { MOV_CH_LAYOUT_QUADRAPHONIC, AV_CH_LAYOUT_QUAD }, // L, R, Rls, Rrs |
| 190 | |
| 191 | { MOV_CH_LAYOUT_MPEG_4_0_A, AV_CH_LAYOUT_4POINT0 }, // L, R, C, Cs |
| 192 | { MOV_CH_LAYOUT_MPEG_4_0_B, AV_CH_LAYOUT_4POINT0 }, // C, L, R, Cs |
| 193 | { MOV_CH_LAYOUT_AC3_3_1, AV_CH_LAYOUT_4POINT0 }, // L, C, R, Cs |
| 194 | |
| 195 | { MOV_CH_LAYOUT_ITU_2_2, AV_CH_LAYOUT_2_2 }, // L, R, Ls, Rs |
| 196 | |
| 197 | { MOV_CH_LAYOUT_DVD_5, AV_CH_LAYOUT_2_1 | // L, R, LFE, Cs |
| 198 | AV_CH_LOW_FREQUENCY }, |
| 199 | { MOV_CH_LAYOUT_AC3_2_1_1, AV_CH_LAYOUT_2_1 | // L, R, Cs, LFE |
| 200 | AV_CH_LOW_FREQUENCY }, |
| 201 | |
| 202 | { MOV_CH_LAYOUT_DVD_10, AV_CH_LAYOUT_3POINT1 }, // L, R, C, LFE |
| 203 | { MOV_CH_LAYOUT_AC3_3_0_1, AV_CH_LAYOUT_3POINT1 }, // L, C, R, LFE |
| 204 | { MOV_CH_LAYOUT_DTS_3_1, AV_CH_LAYOUT_3POINT1 }, // C, L, R, LFE |
| 205 | { 0, 0 }, |
| 206 | }; |
| 207 | |
| 208 | static const struct MovChannelLayoutMap mov_ch_layout_map_5ch[] = { |
| 209 | { MOV_CH_LAYOUT_PENTAGONAL, AV_CH_LAYOUT_5POINT0_BACK }, // L, R, Rls, Rrs, C |
| 210 | |
| 211 | { MOV_CH_LAYOUT_MPEG_5_0_A, AV_CH_LAYOUT_5POINT0 }, // L, R, C, Ls, Rs |
| 212 | { MOV_CH_LAYOUT_MPEG_5_0_B, AV_CH_LAYOUT_5POINT0 }, // L, R, Ls, Rs, C |
| 213 | { MOV_CH_LAYOUT_MPEG_5_0_C, AV_CH_LAYOUT_5POINT0 }, // L, C, R, Ls, Rs |
| 214 | { MOV_CH_LAYOUT_MPEG_5_0_D, AV_CH_LAYOUT_5POINT0 }, // C, L, R, Ls, Rs |
| 215 | |
| 216 | { MOV_CH_LAYOUT_DVD_6, AV_CH_LAYOUT_2_2 | // L, R, LFE, Ls, Rs |
| 217 | AV_CH_LOW_FREQUENCY }, |
| 218 | { MOV_CH_LAYOUT_DVD_18, AV_CH_LAYOUT_2_2 | // L, R, Ls, Rs, LFE |
| 219 | AV_CH_LOW_FREQUENCY }, |
| 220 | |
| 221 | { MOV_CH_LAYOUT_DVD_11, AV_CH_LAYOUT_4POINT1 }, // L, R, C, LFE, Cs |
| 222 | { MOV_CH_LAYOUT_AC3_3_1_1, AV_CH_LAYOUT_4POINT1 }, // L, C, R, Cs, LFE |
| 223 | { MOV_CH_LAYOUT_DTS_4_1, AV_CH_LAYOUT_4POINT1 }, // C, L, R, Cs, LFE |
| 224 | { 0, 0 }, |
| 225 | }; |
| 226 | |
| 227 | static const struct MovChannelLayoutMap mov_ch_layout_map_6ch[] = { |
| 228 | { MOV_CH_LAYOUT_HEXAGONAL, AV_CH_LAYOUT_HEXAGONAL }, // L, R, Rls, Rrs, C, Cs |
| 229 | { MOV_CH_LAYOUT_DTS_6_0_C, AV_CH_LAYOUT_HEXAGONAL }, // C, Cs, L, R, Rls, Rrs |
| 230 | |
| 231 | { MOV_CH_LAYOUT_MPEG_5_1_A, AV_CH_LAYOUT_5POINT1 }, // L, R, C, LFE, Ls, Rs |
| 232 | { MOV_CH_LAYOUT_MPEG_5_1_B, AV_CH_LAYOUT_5POINT1 }, // L, R, Ls, Rs, C, LFE |
| 233 | { MOV_CH_LAYOUT_MPEG_5_1_C, AV_CH_LAYOUT_5POINT1 }, // L, C, R, Ls, Rs, LFE |
| 234 | { MOV_CH_LAYOUT_MPEG_5_1_D, AV_CH_LAYOUT_5POINT1 }, // C, L, R, Ls, Rs, LFE |
| 235 | |
| 236 | { MOV_CH_LAYOUT_AUDIOUNIT_6_0, AV_CH_LAYOUT_6POINT0 }, // L, R, Ls, Rs, C, Cs |
| 237 | { MOV_CH_LAYOUT_AAC_6_0, AV_CH_LAYOUT_6POINT0 }, // C, L, R, Ls, Rs, Cs |
| 238 | { MOV_CH_LAYOUT_EAC3_6_0_A, AV_CH_LAYOUT_6POINT0 }, // L, C, R, Ls, Rs, Cs |
| 239 | |
| 240 | { MOV_CH_LAYOUT_DTS_6_0_A, AV_CH_LAYOUT_6POINT0_FRONT }, // Lc, Rc, L, R, Ls, Rs |
| 241 | |
| 242 | { MOV_CH_LAYOUT_DTS_6_0_B, AV_CH_LAYOUT_5POINT0_BACK | // C, L, R, Rls, Rrs, Ts |
| 243 | AV_CH_TOP_CENTER }, |
| 244 | { 0, 0 }, |
| 245 | }; |
| 246 | |
| 247 | static const struct MovChannelLayoutMap mov_ch_layout_map_7ch[] = { |
| 248 | { MOV_CH_LAYOUT_MPEG_6_1_A, AV_CH_LAYOUT_6POINT1 }, // L, R, C, LFE, Ls, Rs, Cs |
| 249 | { MOV_CH_LAYOUT_AAC_6_1, AV_CH_LAYOUT_6POINT1 }, // C, L, R, Ls, Rs, Cs, LFE |
| 250 | { MOV_CH_LAYOUT_EAC3_6_1_A, AV_CH_LAYOUT_6POINT1 }, // L, C, R, Ls, Rs, LFE, Cs |
| 251 | { MOV_CH_LAYOUT_DTS_6_1_D, AV_CH_LAYOUT_6POINT1 }, // C, L, R, Ls, Rs, LFE, Cs |
| 252 | |
| 253 | { MOV_CH_LAYOUT_AUDIOUNIT_7_0, AV_CH_LAYOUT_7POINT0 }, // L, R, Ls, Rs, C, Rls, Rrs |
| 254 | { MOV_CH_LAYOUT_AAC_7_0, AV_CH_LAYOUT_7POINT0 }, // C, L, R, Ls, Rs, Rls, Rrs |
| 255 | { MOV_CH_LAYOUT_EAC3_7_0_A, AV_CH_LAYOUT_7POINT0 }, // L, C, R, Ls, Rs, Rls, Rrs |
| 256 | |
| 257 | { MOV_CH_LAYOUT_AUDIOUNIT_7_0_FRONT, AV_CH_LAYOUT_7POINT0_FRONT }, // L, R, Ls, Rs, C, Lc, Rc |
| 258 | { MOV_CH_LAYOUT_DTS_7_0, AV_CH_LAYOUT_7POINT0_FRONT }, // Lc, C, Rc, L, R, Ls, Rs |
| 259 | |
| 260 | { MOV_CH_LAYOUT_EAC3_6_1_B, AV_CH_LAYOUT_5POINT1 | // L, C, R, Ls, Rs, LFE, Ts |
| 261 | AV_CH_TOP_CENTER }, |
| 262 | |
| 263 | { MOV_CH_LAYOUT_EAC3_6_1_C, AV_CH_LAYOUT_5POINT1 | // L, C, R, Ls, Rs, LFE, Vhc |
| 264 | AV_CH_TOP_FRONT_CENTER }, |
| 265 | |
| 266 | { MOV_CH_LAYOUT_DTS_6_1_A, AV_CH_LAYOUT_6POINT1_FRONT }, // Lc, Rc, L, R, Ls, Rs, LFE |
| 267 | |
| 268 | { MOV_CH_LAYOUT_DTS_6_1_B, AV_CH_LAYOUT_5POINT1_BACK | // C, L, R, Rls, Rrs, Ts, LFE |
| 269 | AV_CH_TOP_CENTER }, |
| 270 | |
| 271 | { MOV_CH_LAYOUT_DTS_6_1_C, AV_CH_LAYOUT_6POINT1_BACK }, // C, Cs, L, R, Rls, Rrs, LFE |
| 272 | { 0, 0 }, |
| 273 | }; |
| 274 | |
| 275 | static const struct MovChannelLayoutMap mov_ch_layout_map_8ch[] = { |
| 276 | { MOV_CH_LAYOUT_OCTAGONAL, AV_CH_LAYOUT_OCTAGONAL }, // L, R, Rls, Rrs, C, Cs, Ls, Rs |
| 277 | { MOV_CH_LAYOUT_AAC_OCTAGONAL, AV_CH_LAYOUT_OCTAGONAL }, // C, L, R, Ls, Rs, Rls, Rrs, Cs |
| 278 | |
| 279 | { MOV_CH_LAYOUT_CUBE, AV_CH_LAYOUT_QUAD | // L, R, Rls, Rrs, Vhl, Vhr, Rlt, Rrt |
| 280 | AV_CH_TOP_FRONT_LEFT | |
| 281 | AV_CH_TOP_FRONT_RIGHT | |
| 282 | AV_CH_TOP_BACK_LEFT | |
| 283 | AV_CH_TOP_BACK_RIGHT }, |
| 284 | |
| 285 | { MOV_CH_LAYOUT_MPEG_7_1_A, AV_CH_LAYOUT_7POINT1_WIDE }, // L, R, C, LFE, Ls, Rs, Lc, Rc |
| 286 | { MOV_CH_LAYOUT_MPEG_7_1_B, AV_CH_LAYOUT_7POINT1_WIDE }, // C, Lc, Rc, L, R, Ls, Rs, LFE |
| 287 | { MOV_CH_LAYOUT_EMAGIC_DEFAULT_7_1, AV_CH_LAYOUT_7POINT1_WIDE }, // L, R, Ls, Rs, C, LFE, Lc, Rc |
| 288 | { MOV_CH_LAYOUT_EAC3_7_1_B, AV_CH_LAYOUT_7POINT1_WIDE }, // L, C, R, Ls, Rs, LFE, Lc, Rc |
| 289 | { MOV_CH_LAYOUT_DTS_7_1, AV_CH_LAYOUT_7POINT1_WIDE }, // Lc, C, Rc, L, R, Ls, Rs, LFE |
| 290 | |
| 291 | { MOV_CH_LAYOUT_MPEG_7_1_C, AV_CH_LAYOUT_7POINT1 }, // L, R, C, LFE, Ls, Rs, Rls, Rrs |
| 292 | { MOV_CH_LAYOUT_EAC3_7_1_A, AV_CH_LAYOUT_7POINT1 }, // L, C, R, Ls, Rs, LFE, Rls, Rrs |
| 293 | |
| 294 | { MOV_CH_LAYOUT_SMPTE_DTV, AV_CH_LAYOUT_5POINT1 | // L, R, C, LFE, Ls, Rs, Lt, Rt |
| 295 | AV_CH_LAYOUT_STEREO_DOWNMIX }, |
| 296 | |
| 297 | { MOV_CH_LAYOUT_EAC3_7_1_C, AV_CH_LAYOUT_5POINT1 | // L, C, R, Ls, Rs, LFE, Lsd, Rsd |
| 298 | AV_CH_SURROUND_DIRECT_LEFT | |
| 299 | AV_CH_SURROUND_DIRECT_RIGHT }, |
| 300 | |
| 301 | { MOV_CH_LAYOUT_EAC3_7_1_D, AV_CH_LAYOUT_5POINT1 | // L, C, R, Ls, Rs, LFE, Lw, Rw |
| 302 | AV_CH_WIDE_LEFT | |
| 303 | AV_CH_WIDE_RIGHT }, |
| 304 | |
| 305 | { MOV_CH_LAYOUT_EAC3_7_1_E, AV_CH_LAYOUT_5POINT1 | // L, C, R, Ls, Rs, LFE, Vhl, Vhr |
| 306 | AV_CH_TOP_FRONT_LEFT | |
| 307 | AV_CH_TOP_FRONT_RIGHT }, |
| 308 | |
| 309 | { MOV_CH_LAYOUT_EAC3_7_1_F, AV_CH_LAYOUT_5POINT1 | // L, C, R, Ls, Rs, LFE, Cs, Ts |
| 310 | AV_CH_BACK_CENTER | |
| 311 | AV_CH_TOP_CENTER }, |
| 312 | |
| 313 | { MOV_CH_LAYOUT_EAC3_7_1_G, AV_CH_LAYOUT_5POINT1 | // L, C, R, Ls, Rs, LFE, Cs, Vhc |
| 314 | AV_CH_BACK_CENTER | |
| 315 | AV_CH_TOP_FRONT_CENTER }, |
| 316 | |
| 317 | { MOV_CH_LAYOUT_EAC3_7_1_H, AV_CH_LAYOUT_5POINT1 | // L, C, R, Ls, Rs, LFE, Ts, Vhc |
| 318 | AV_CH_TOP_CENTER | |
| 319 | AV_CH_TOP_FRONT_CENTER }, |
| 320 | |
| 321 | { MOV_CH_LAYOUT_DTS_8_0_A, AV_CH_LAYOUT_2_2 | // Lc, Rc, L, R, Ls, Rs, Rls, Rrs |
| 322 | AV_CH_BACK_LEFT | |
| 323 | AV_CH_BACK_RIGHT | |
| 324 | AV_CH_FRONT_LEFT_OF_CENTER | |
| 325 | AV_CH_FRONT_RIGHT_OF_CENTER }, |
| 326 | |
| 327 | { MOV_CH_LAYOUT_DTS_8_0_B, AV_CH_LAYOUT_5POINT0 | // Lc, C, Rc, L, R, Ls, Cs, Rs |
| 328 | AV_CH_FRONT_LEFT_OF_CENTER | |
| 329 | AV_CH_FRONT_RIGHT_OF_CENTER | |
| 330 | AV_CH_BACK_CENTER }, |
| 331 | { 0, 0 }, |
| 332 | }; |
| 333 | |
| 334 | static const struct MovChannelLayoutMap mov_ch_layout_map_9ch[] = { |
| 335 | { MOV_CH_LAYOUT_DTS_8_1_A, AV_CH_LAYOUT_2_2 | // Lc, Rc, L, R, Ls, Rs, Rls, Rrs, LFE |
| 336 | AV_CH_BACK_LEFT | |
| 337 | AV_CH_BACK_RIGHT | |
| 338 | AV_CH_FRONT_LEFT_OF_CENTER | |
| 339 | AV_CH_FRONT_RIGHT_OF_CENTER | |
| 340 | AV_CH_LOW_FREQUENCY }, |
| 341 | |
| 342 | { MOV_CH_LAYOUT_DTS_8_1_B, AV_CH_LAYOUT_7POINT1_WIDE | // Lc, C, Rc, L, R, Ls, Cs, Rs, LFE |
| 343 | AV_CH_BACK_CENTER }, |
| 344 | { 0, 0 }, |
| 345 | }; |
| 346 | |
| 347 | static const struct MovChannelLayoutMap * const mov_ch_layout_map[] = { |
| 348 | mov_ch_layout_map_misc, |
| 349 | mov_ch_layout_map_1ch, |
| 350 | mov_ch_layout_map_2ch, |
| 351 | mov_ch_layout_map_3ch, |
| 352 | mov_ch_layout_map_4ch, |
| 353 | mov_ch_layout_map_5ch, |
| 354 | mov_ch_layout_map_6ch, |
| 355 | mov_ch_layout_map_7ch, |
| 356 | mov_ch_layout_map_8ch, |
| 357 | mov_ch_layout_map_9ch, |
| 358 | }; |
| 359 | |
| 360 | static const enum MovChannelLayoutTag mov_ch_layouts_aac[] = { |
| 361 | MOV_CH_LAYOUT_MONO, |
| 362 | MOV_CH_LAYOUT_STEREO, |
| 363 | MOV_CH_LAYOUT_AC3_1_0_1, |
| 364 | MOV_CH_LAYOUT_MPEG_3_0_B, |
| 365 | MOV_CH_LAYOUT_ITU_2_1, |
| 366 | MOV_CH_LAYOUT_DVD_4, |
| 367 | MOV_CH_LAYOUT_QUADRAPHONIC, |
| 368 | MOV_CH_LAYOUT_MPEG_4_0_B, |
| 369 | MOV_CH_LAYOUT_ITU_2_2, |
| 370 | MOV_CH_LAYOUT_AC3_2_1_1, |
| 371 | MOV_CH_LAYOUT_DTS_3_1, |
| 372 | MOV_CH_LAYOUT_MPEG_5_0_D, |
| 373 | MOV_CH_LAYOUT_DVD_18, |
| 374 | MOV_CH_LAYOUT_DTS_4_1, |
| 375 | MOV_CH_LAYOUT_MPEG_5_1_D, |
| 376 | MOV_CH_LAYOUT_AAC_6_0, |
| 377 | MOV_CH_LAYOUT_DTS_6_0_A, |
| 378 | MOV_CH_LAYOUT_AAC_6_1, |
| 379 | MOV_CH_LAYOUT_AAC_7_0, |
| 380 | MOV_CH_LAYOUT_DTS_6_1_A, |
| 381 | MOV_CH_LAYOUT_AAC_OCTAGONAL, |
| 382 | MOV_CH_LAYOUT_MPEG_7_1_B, |
| 383 | MOV_CH_LAYOUT_DTS_8_0_A, |
| 384 | 0, |
| 385 | }; |
| 386 | |
| 387 | static const enum MovChannelLayoutTag mov_ch_layouts_ac3[] = { |
| 388 | MOV_CH_LAYOUT_MONO, |
| 389 | MOV_CH_LAYOUT_STEREO, |
| 390 | MOV_CH_LAYOUT_AC3_1_0_1, |
| 391 | MOV_CH_LAYOUT_AC3_3_0, |
| 392 | MOV_CH_LAYOUT_ITU_2_1, |
| 393 | MOV_CH_LAYOUT_DVD_4, |
| 394 | MOV_CH_LAYOUT_AC3_3_1, |
| 395 | MOV_CH_LAYOUT_ITU_2_2, |
| 396 | MOV_CH_LAYOUT_AC3_2_1_1, |
| 397 | MOV_CH_LAYOUT_AC3_3_0_1, |
| 398 | MOV_CH_LAYOUT_MPEG_5_0_C, |
| 399 | MOV_CH_LAYOUT_DVD_18, |
| 400 | MOV_CH_LAYOUT_AC3_3_1_1, |
| 401 | MOV_CH_LAYOUT_MPEG_5_1_C, |
| 402 | 0, |
| 403 | }; |
| 404 | |
| 405 | static const enum MovChannelLayoutTag mov_ch_layouts_alac[] = { |
| 406 | MOV_CH_LAYOUT_MONO, |
| 407 | MOV_CH_LAYOUT_STEREO, |
| 408 | MOV_CH_LAYOUT_MPEG_3_0_B, |
| 409 | MOV_CH_LAYOUT_MPEG_4_0_B, |
| 410 | MOV_CH_LAYOUT_MPEG_5_0_D, |
| 411 | MOV_CH_LAYOUT_MPEG_5_1_D, |
| 412 | MOV_CH_LAYOUT_AAC_6_1, |
| 413 | MOV_CH_LAYOUT_MPEG_7_1_B, |
| 414 | 0, |
| 415 | }; |
| 416 | |
| 417 | static const enum MovChannelLayoutTag mov_ch_layouts_wav[] = { |
| 418 | MOV_CH_LAYOUT_MONO, |
| 419 | MOV_CH_LAYOUT_STEREO, |
| 420 | MOV_CH_LAYOUT_MATRIXSTEREO, |
| 421 | MOV_CH_LAYOUT_MPEG_3_0_A, |
| 422 | MOV_CH_LAYOUT_QUADRAPHONIC, |
| 423 | MOV_CH_LAYOUT_MPEG_5_0_A, |
| 424 | MOV_CH_LAYOUT_MPEG_5_1_A, |
| 425 | MOV_CH_LAYOUT_MPEG_6_1_A, |
| 426 | MOV_CH_LAYOUT_MPEG_7_1_A, |
| 427 | MOV_CH_LAYOUT_MPEG_7_1_C, |
| 428 | MOV_CH_LAYOUT_SMPTE_DTV, |
| 429 | 0, |
| 430 | }; |
| 431 | |
| 432 | static const struct { |
| 433 | enum AVCodecID codec_id; |
| 434 | const enum MovChannelLayoutTag *layouts; |
| 435 | } mov_codec_ch_layouts[] = { |
| 436 | { AV_CODEC_ID_AAC, mov_ch_layouts_aac }, |
| 437 | { AV_CODEC_ID_AC3, mov_ch_layouts_ac3 }, |
| 438 | { AV_CODEC_ID_ALAC, mov_ch_layouts_alac }, |
| 439 | { AV_CODEC_ID_PCM_U8, mov_ch_layouts_wav }, |
| 440 | { AV_CODEC_ID_PCM_S8, mov_ch_layouts_wav }, |
| 441 | { AV_CODEC_ID_PCM_S16LE, mov_ch_layouts_wav }, |
| 442 | { AV_CODEC_ID_PCM_S16BE, mov_ch_layouts_wav }, |
| 443 | { AV_CODEC_ID_PCM_S24LE, mov_ch_layouts_wav }, |
| 444 | { AV_CODEC_ID_PCM_S24BE, mov_ch_layouts_wav }, |
| 445 | { AV_CODEC_ID_PCM_S32LE, mov_ch_layouts_wav }, |
| 446 | { AV_CODEC_ID_PCM_S32BE, mov_ch_layouts_wav }, |
| 447 | { AV_CODEC_ID_PCM_F32LE, mov_ch_layouts_wav }, |
| 448 | { AV_CODEC_ID_PCM_F32BE, mov_ch_layouts_wav }, |
| 449 | { AV_CODEC_ID_PCM_F64LE, mov_ch_layouts_wav }, |
| 450 | { AV_CODEC_ID_PCM_F64BE, mov_ch_layouts_wav }, |
| 451 | { AV_CODEC_ID_NONE, NULL }, |
| 452 | }; |
| 453 | |
| 454 | uint64_t ff_mov_get_channel_layout(uint32_t tag, uint32_t bitmap) |
| 455 | { |
| 456 | int i, channels; |
| 457 | const struct MovChannelLayoutMap *layout_map; |
| 458 | |
| 459 | /* use ff_mov_get_channel_label() to build a layout instead */ |
| 460 | if (tag == MOV_CH_LAYOUT_USE_DESCRIPTIONS) |
| 461 | return 0; |
| 462 | |
| 463 | /* handle the use of the channel bitmap */ |
| 464 | if (tag == MOV_CH_LAYOUT_USE_BITMAP) |
| 465 | return bitmap < 0x40000 ? bitmap : 0; |
| 466 | |
| 467 | /* get the layout map based on the channel count for the specified layout tag */ |
| 468 | channels = tag & 0xFFFF; |
| 469 | if (channels > 9) |
| 470 | channels = 0; |
| 471 | layout_map = mov_ch_layout_map[channels]; |
| 472 | |
| 473 | /* find the channel layout for the specified layout tag */ |
| 474 | for (i = 0; layout_map[i].tag != 0; i++) { |
| 475 | if (layout_map[i].tag == tag) |
| 476 | break; |
| 477 | } |
| 478 | return layout_map[i].layout; |
| 479 | } |
| 480 | |
| 481 | static uint32_t mov_get_channel_label(uint32_t label) |
| 482 | { |
| 483 | if (label == 0) |
| 484 | return 0; |
| 485 | if (label <= 18) |
| 486 | return 1U << (label - 1); |
| 487 | if (label == 38) |
| 488 | return AV_CH_STEREO_LEFT; |
| 489 | if (label == 39) |
| 490 | return AV_CH_STEREO_RIGHT; |
| 491 | return 0; |
| 492 | } |
| 493 | |
| 494 | uint32_t ff_mov_get_channel_layout_tag(enum AVCodecID codec_id, |
| 495 | uint64_t channel_layout, |
| 496 | uint32_t *bitmap) |
| 497 | { |
| 498 | int i, j; |
| 499 | uint32_t tag = 0; |
| 500 | const enum MovChannelLayoutTag *layouts = NULL; |
| 501 | |
| 502 | /* find the layout list for the specified codec */ |
| 503 | for (i = 0; mov_codec_ch_layouts[i].codec_id != AV_CODEC_ID_NONE; i++) { |
| 504 | if (mov_codec_ch_layouts[i].codec_id == codec_id) |
| 505 | break; |
| 506 | } |
| 507 | if (mov_codec_ch_layouts[i].codec_id != AV_CODEC_ID_NONE) |
| 508 | layouts = mov_codec_ch_layouts[i].layouts; |
| 509 | |
| 510 | if (layouts) { |
| 511 | int channels; |
| 512 | const struct MovChannelLayoutMap *layout_map; |
| 513 | |
| 514 | /* get the layout map based on the channel count */ |
| 515 | channels = av_get_channel_layout_nb_channels(channel_layout); |
| 516 | if (channels > 9) |
| 517 | channels = 0; |
| 518 | layout_map = mov_ch_layout_map[channels]; |
| 519 | |
| 520 | /* find the layout tag for the specified channel layout */ |
| 521 | for (i = 0; layouts[i] != 0; i++) { |
| 522 | if ((layouts[i] & 0xFFFF) != channels) |
| 523 | continue; |
| 524 | for (j = 0; layout_map[j].tag != 0; j++) { |
| 525 | if (layout_map[j].tag == layouts[i] && |
| 526 | layout_map[j].layout == channel_layout) |
| 527 | break; |
| 528 | } |
| 529 | if (layout_map[j].tag) |
| 530 | break; |
| 531 | } |
| 532 | tag = layouts[i]; |
| 533 | } |
| 534 | |
| 535 | /* if no tag was found, use channel bitmap as a backup if possible */ |
| 536 | if (tag == 0 && channel_layout > 0 && channel_layout < 0x40000) { |
| 537 | tag = MOV_CH_LAYOUT_USE_BITMAP; |
| 538 | *bitmap = (uint32_t)channel_layout; |
| 539 | } else |
| 540 | *bitmap = 0; |
| 541 | |
| 542 | /* TODO: set channel descriptions as a secondary backup */ |
| 543 | |
| 544 | return tag; |
| 545 | } |
| 546 | |
| 547 | int ff_mov_read_chan(AVFormatContext *s, AVIOContext *pb, AVStream *st, |
| 548 | int64_t size) |
| 549 | { |
| 550 | uint32_t layout_tag, bitmap, num_descr, label_mask; |
| 551 | int i; |
| 552 | |
| 553 | if (size < 12) |
| 554 | return AVERROR_INVALIDDATA; |
| 555 | |
| 556 | layout_tag = avio_rb32(pb); |
| 557 | bitmap = avio_rb32(pb); |
| 558 | num_descr = avio_rb32(pb); |
| 559 | |
| 560 | av_dlog(s, "chan: layout=%u bitmap=%u num_descr=%u\n", |
| 561 | layout_tag, bitmap, num_descr); |
| 562 | |
| 563 | if (size < 12ULL + num_descr * 20ULL) |
| 564 | return 0; |
| 565 | |
| 566 | label_mask = 0; |
| 567 | for (i = 0; i < num_descr; i++) { |
| 568 | uint32_t label; |
| 569 | label = avio_rb32(pb); // mChannelLabel |
| 570 | avio_rb32(pb); // mChannelFlags |
| 571 | avio_rl32(pb); // mCoordinates[0] |
| 572 | avio_rl32(pb); // mCoordinates[1] |
| 573 | avio_rl32(pb); // mCoordinates[2] |
| 574 | size -= 20; |
| 575 | if (layout_tag == 0) { |
| 576 | uint32_t mask_incr = mov_get_channel_label(label); |
| 577 | if (mask_incr == 0) { |
| 578 | label_mask = 0; |
| 579 | break; |
| 580 | } |
| 581 | label_mask |= mask_incr; |
| 582 | } |
| 583 | } |
| 584 | if (layout_tag == 0) { |
| 585 | if (label_mask) |
| 586 | st->codec->channel_layout = label_mask; |
| 587 | } else |
| 588 | st->codec->channel_layout = ff_mov_get_channel_layout(layout_tag, bitmap); |
| 589 | avio_skip(pb, size - 12); |
| 590 | |
| 591 | return 0; |
| 592 | } |