1/* 2 * Copyright (c) 2011 Justin Ruggles 3 * 4 * This file is part of Libav. 5 * 6 * Libav 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 * Libav 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 Libav; 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/audioconvert.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 */ 47enum 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 136struct MovChannelLayoutMap { 137 uint32_t tag; 138 uint64_t layout; 139}; 140 141static 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 156static const struct MovChannelLayoutMap mov_ch_layout_map_1ch[] = { 157 { MOV_CH_LAYOUT_MONO, AV_CH_LAYOUT_MONO }, // C 158}; 159 160static const struct MovChannelLayoutMap mov_ch_layout_map_2ch[] = { 161 { MOV_CH_LAYOUT_STEREO, AV_CH_LAYOUT_STEREO }, // L, R 162 { MOV_CH_LAYOUT_STEREOHEADPHONES, AV_CH_LAYOUT_STEREO }, // L, R 163 { MOV_CH_LAYOUT_BINAURAL, AV_CH_LAYOUT_STEREO }, // L, R 164 { MOV_CH_LAYOUT_MIDSIDE, AV_CH_LAYOUT_STEREO }, // C, sides 165 { MOV_CH_LAYOUT_XY, AV_CH_LAYOUT_STEREO }, // X (left), Y (right) 166 167 { MOV_CH_LAYOUT_MATRIXSTEREO, AV_CH_LAYOUT_STEREO_DOWNMIX }, // Lt, Rt 168 169 { MOV_CH_LAYOUT_AC3_1_0_1, AV_CH_LAYOUT_MONO | // C, LFE 170 AV_CH_LOW_FREQUENCY }, 171 { 0, 0 }, 172}; 173 174static const struct MovChannelLayoutMap mov_ch_layout_map_3ch[] = { 175 { MOV_CH_LAYOUT_MPEG_3_0_A, AV_CH_LAYOUT_SURROUND }, // L, R, C 176 { MOV_CH_LAYOUT_MPEG_3_0_B, AV_CH_LAYOUT_SURROUND }, // C, L, R 177 { MOV_CH_LAYOUT_AC3_3_0, AV_CH_LAYOUT_SURROUND }, // L, C, R 178 179 { MOV_CH_LAYOUT_ITU_2_1, AV_CH_LAYOUT_2_1 }, // L, R, Cs 180 181 { MOV_CH_LAYOUT_DVD_4, AV_CH_LAYOUT_2POINT1 }, // L, R, LFE 182 { 0, 0 }, 183}; 184 185static const struct MovChannelLayoutMap mov_ch_layout_map_4ch[] = { 186 { MOV_CH_LAYOUT_AMBISONIC_B_FORMAT, 0 }, // W, X, Y, Z 187 188 { MOV_CH_LAYOUT_QUADRAPHONIC, AV_CH_LAYOUT_QUAD }, // L, R, Rls, Rrs 189 190 { MOV_CH_LAYOUT_MPEG_4_0_A, AV_CH_LAYOUT_4POINT0 }, // L, R, C, Cs 191 { MOV_CH_LAYOUT_MPEG_4_0_B, AV_CH_LAYOUT_4POINT0 }, // C, L, R, Cs 192 { MOV_CH_LAYOUT_AC3_3_1, AV_CH_LAYOUT_4POINT0 }, // L, C, R, Cs 193 194 { MOV_CH_LAYOUT_ITU_2_2, AV_CH_LAYOUT_2_2 }, // L, R, Ls, Rs 195 196 { MOV_CH_LAYOUT_DVD_5, AV_CH_LAYOUT_2_1 | // L, R, LFE, Cs 197 AV_CH_LOW_FREQUENCY }, 198 { MOV_CH_LAYOUT_AC3_2_1_1, AV_CH_LAYOUT_2_1 | // L, R, Cs, LFE 199 AV_CH_LOW_FREQUENCY }, 200 201 { MOV_CH_LAYOUT_DVD_10, AV_CH_LAYOUT_3POINT1 }, // L, R, C, LFE 202 { MOV_CH_LAYOUT_AC3_3_0_1, AV_CH_LAYOUT_3POINT1 }, // L, C, R, LFE 203 { MOV_CH_LAYOUT_DTS_3_1, AV_CH_LAYOUT_3POINT1 }, // C, L, R, LFE 204 { 0, 0 }, 205}; 206 207static const struct MovChannelLayoutMap mov_ch_layout_map_5ch[] = { 208 { MOV_CH_LAYOUT_PENTAGONAL, AV_CH_LAYOUT_5POINT0_BACK }, // L, R, Rls, Rrs, C 209 210 { MOV_CH_LAYOUT_MPEG_5_0_A, AV_CH_LAYOUT_5POINT0 }, // L, R, C, Ls, Rs 211 { MOV_CH_LAYOUT_MPEG_5_0_B, AV_CH_LAYOUT_5POINT0 }, // L, R, Ls, Rs, C 212 { MOV_CH_LAYOUT_MPEG_5_0_C, AV_CH_LAYOUT_5POINT0 }, // L, C, R, Ls, Rs 213 { MOV_CH_LAYOUT_MPEG_5_0_D, AV_CH_LAYOUT_5POINT0 }, // C, L, R, Ls, Rs 214 215 { MOV_CH_LAYOUT_DVD_6, AV_CH_LAYOUT_2_2 | // L, R, LFE, Ls, Rs 216 AV_CH_LOW_FREQUENCY }, 217 { MOV_CH_LAYOUT_DVD_18, AV_CH_LAYOUT_2_2 | // L, R, Ls, Rs, LFE 218 AV_CH_LOW_FREQUENCY }, 219 220 { MOV_CH_LAYOUT_DVD_11, AV_CH_LAYOUT_4POINT1 }, // L, R, C, LFE, Cs 221 { MOV_CH_LAYOUT_AC3_3_1_1, AV_CH_LAYOUT_4POINT1 }, // L, C, R, Cs, LFE 222 { MOV_CH_LAYOUT_DTS_4_1, AV_CH_LAYOUT_4POINT1 }, // C, L, R, Cs, LFE 223 { 0, 0 }, 224}; 225 226static const struct MovChannelLayoutMap mov_ch_layout_map_6ch[] = { 227 { MOV_CH_LAYOUT_HEXAGONAL, AV_CH_LAYOUT_HEXAGONAL }, // L, R, Rls, Rrs, C, Cs 228 { MOV_CH_LAYOUT_DTS_6_0_C, AV_CH_LAYOUT_HEXAGONAL }, // C, Cs, L, R, Rls, Rrs 229 230 { MOV_CH_LAYOUT_MPEG_5_1_A, AV_CH_LAYOUT_5POINT1 }, // L, R, C, LFE, Ls, Rs 231 { MOV_CH_LAYOUT_MPEG_5_1_B, AV_CH_LAYOUT_5POINT1 }, // L, R, Ls, Rs, C, LFE 232 { MOV_CH_LAYOUT_MPEG_5_1_C, AV_CH_LAYOUT_5POINT1 }, // L, C, R, Ls, Rs, LFE 233 { MOV_CH_LAYOUT_MPEG_5_1_D, AV_CH_LAYOUT_5POINT1 }, // C, L, R, Ls, Rs, LFE 234 235 { MOV_CH_LAYOUT_AUDIOUNIT_6_0, AV_CH_LAYOUT_6POINT0 }, // L, R, Ls, Rs, C, Cs 236 { MOV_CH_LAYOUT_AAC_6_0, AV_CH_LAYOUT_6POINT0 }, // C, L, R, Ls, Rs, Cs 237 { MOV_CH_LAYOUT_EAC3_6_0_A, AV_CH_LAYOUT_6POINT0 }, // L, C, R, Ls, Rs, Cs 238 239 { MOV_CH_LAYOUT_DTS_6_0_A, AV_CH_LAYOUT_6POINT0_FRONT }, // Lc, Rc, L, R, Ls, Rs 240 241 { MOV_CH_LAYOUT_DTS_6_0_B, AV_CH_LAYOUT_5POINT0_BACK | // C, L, R, Rls, Rrs, Ts 242 AV_CH_TOP_CENTER }, 243 { 0, 0 }, 244}; 245 246static const struct MovChannelLayoutMap mov_ch_layout_map_7ch[] = { 247 { MOV_CH_LAYOUT_MPEG_6_1_A, AV_CH_LAYOUT_6POINT1 }, // L, R, C, LFE, Ls, Rs, Cs 248 { MOV_CH_LAYOUT_AAC_6_1, AV_CH_LAYOUT_6POINT1 }, // C, L, R, Ls, Rs, Cs, LFE 249 { MOV_CH_LAYOUT_EAC3_6_1_A, AV_CH_LAYOUT_6POINT1 }, // L, C, R, Ls, Rs, LFE, Cs 250 { MOV_CH_LAYOUT_DTS_6_1_D, AV_CH_LAYOUT_6POINT1 }, // C, L, R, Ls, Rs, LFE, Cs 251 252 { MOV_CH_LAYOUT_AUDIOUNIT_7_0, AV_CH_LAYOUT_7POINT0 }, // L, R, Ls, Rs, C, Rls, Rrs 253 { MOV_CH_LAYOUT_AAC_7_0, AV_CH_LAYOUT_7POINT0 }, // C, L, R, Ls, Rs, Rls, Rrs 254 { MOV_CH_LAYOUT_EAC3_7_0_A, AV_CH_LAYOUT_7POINT0 }, // L, C, R, Ls, Rs, Rls, Rrs 255 256 { MOV_CH_LAYOUT_AUDIOUNIT_7_0_FRONT, AV_CH_LAYOUT_7POINT0_FRONT }, // L, R, Ls, Rs, C, Lc, Rc 257 { MOV_CH_LAYOUT_DTS_7_0, AV_CH_LAYOUT_7POINT0_FRONT }, // Lc, C, Rc, L, R, Ls, Rs 258 259 { MOV_CH_LAYOUT_EAC3_6_1_B, AV_CH_LAYOUT_5POINT1 | // L, C, R, Ls, Rs, LFE, Ts 260 AV_CH_TOP_CENTER }, 261 262 { MOV_CH_LAYOUT_EAC3_6_1_C, AV_CH_LAYOUT_5POINT1 | // L, C, R, Ls, Rs, LFE, Vhc 263 AV_CH_TOP_FRONT_CENTER }, 264 265 { MOV_CH_LAYOUT_DTS_6_1_A, AV_CH_LAYOUT_6POINT1_FRONT }, // Lc, Rc, L, R, Ls, Rs, LFE 266 267 { MOV_CH_LAYOUT_DTS_6_1_B, AV_CH_LAYOUT_5POINT1_BACK | // C, L, R, Rls, Rrs, Ts, LFE 268 AV_CH_TOP_CENTER }, 269 270 { MOV_CH_LAYOUT_DTS_6_1_C, AV_CH_LAYOUT_6POINT1_BACK }, // C, Cs, L, R, Rls, Rrs, LFE 271 { 0, 0 }, 272}; 273 274static const struct MovChannelLayoutMap mov_ch_layout_map_8ch[] = { 275 { MOV_CH_LAYOUT_OCTAGONAL, AV_CH_LAYOUT_OCTAGONAL }, // L, R, Rls, Rrs, C, Cs, Ls, Rs 276 { MOV_CH_LAYOUT_AAC_OCTAGONAL, AV_CH_LAYOUT_OCTAGONAL }, // C, L, R, Ls, Rs, Rls, Rrs, Cs 277 278 { MOV_CH_LAYOUT_CUBE, AV_CH_LAYOUT_QUAD | // L, R, Rls, Rrs, Vhl, Vhr, Rlt, Rrt 279 AV_CH_TOP_FRONT_LEFT | 280 AV_CH_TOP_FRONT_RIGHT | 281 AV_CH_TOP_BACK_LEFT | 282 AV_CH_TOP_BACK_RIGHT }, 283 284 { MOV_CH_LAYOUT_MPEG_7_1_A, AV_CH_LAYOUT_7POINT1_WIDE }, // L, R, C, LFE, Ls, Rs, Lc, Rc 285 { MOV_CH_LAYOUT_MPEG_7_1_B, AV_CH_LAYOUT_7POINT1_WIDE }, // C, Lc, Rc, L, R, Ls, Rs, LFE 286 { MOV_CH_LAYOUT_EMAGIC_DEFAULT_7_1, AV_CH_LAYOUT_7POINT1_WIDE }, // L, R, Ls, Rs, C, LFE, Lc, Rc 287 { MOV_CH_LAYOUT_EAC3_7_1_B, AV_CH_LAYOUT_7POINT1_WIDE }, // L, C, R, Ls, Rs, LFE, Lc, Rc 288 { MOV_CH_LAYOUT_DTS_7_1, AV_CH_LAYOUT_7POINT1_WIDE }, // Lc, C, Rc, L, R, Ls, Rs, LFE 289 290 { MOV_CH_LAYOUT_MPEG_7_1_C, AV_CH_LAYOUT_7POINT1 }, // L, R, C, LFE, Ls, Rs, Rls, Rrs 291 { MOV_CH_LAYOUT_EAC3_7_1_A, AV_CH_LAYOUT_7POINT1 }, // L, C, R, Ls, Rs, LFE, Rls, Rrs 292 293 { MOV_CH_LAYOUT_SMPTE_DTV, AV_CH_LAYOUT_5POINT1 | // L, R, C, LFE, Ls, Rs, Lt, Rt 294 AV_CH_LAYOUT_STEREO_DOWNMIX }, 295 296 { MOV_CH_LAYOUT_EAC3_7_1_C, AV_CH_LAYOUT_5POINT1 | // L, C, R, Ls, Rs, LFE, Lsd, Rsd 297 AV_CH_SURROUND_DIRECT_LEFT | 298 AV_CH_SURROUND_DIRECT_RIGHT }, 299 300 { MOV_CH_LAYOUT_EAC3_7_1_D, AV_CH_LAYOUT_5POINT1 | // L, C, R, Ls, Rs, LFE, Lw, Rw 301 AV_CH_WIDE_LEFT | 302 AV_CH_WIDE_RIGHT }, 303 304 { MOV_CH_LAYOUT_EAC3_7_1_E, AV_CH_LAYOUT_5POINT1 | // L, C, R, Ls, Rs, LFE, Vhl, Vhr 305 AV_CH_TOP_FRONT_LEFT | 306 AV_CH_TOP_FRONT_RIGHT }, 307 308 { MOV_CH_LAYOUT_EAC3_7_1_F, AV_CH_LAYOUT_5POINT1 | // L, C, R, Ls, Rs, LFE, Cs, Ts 309 AV_CH_BACK_CENTER | 310 AV_CH_TOP_CENTER }, 311 312 { MOV_CH_LAYOUT_EAC3_7_1_G, AV_CH_LAYOUT_5POINT1 | // L, C, R, Ls, Rs, LFE, Cs, Vhc 313 AV_CH_BACK_CENTER | 314 AV_CH_TOP_FRONT_CENTER }, 315 316 { MOV_CH_LAYOUT_EAC3_7_1_H, AV_CH_LAYOUT_5POINT1 | // L, C, R, Ls, Rs, LFE, Ts, Vhc 317 AV_CH_TOP_CENTER | 318 AV_CH_TOP_FRONT_CENTER }, 319 320 { MOV_CH_LAYOUT_DTS_8_0_A, AV_CH_LAYOUT_2_2 | // Lc, Rc, L, R, Ls, Rs, Rls, Rrs 321 AV_CH_BACK_LEFT | 322 AV_CH_BACK_RIGHT | 323 AV_CH_FRONT_LEFT_OF_CENTER | 324 AV_CH_FRONT_RIGHT_OF_CENTER }, 325 326 { MOV_CH_LAYOUT_DTS_8_0_B, AV_CH_LAYOUT_5POINT0 | // Lc, C, Rc, L, R, Ls, Cs, Rs 327 AV_CH_FRONT_LEFT_OF_CENTER | 328 AV_CH_FRONT_RIGHT_OF_CENTER | 329 AV_CH_BACK_CENTER }, 330 { 0, 0 }, 331}; 332 333static const struct MovChannelLayoutMap mov_ch_layout_map_9ch[] = { 334 { MOV_CH_LAYOUT_DTS_8_1_A, AV_CH_LAYOUT_2_2 | // Lc, Rc, L, R, Ls, Rs, Rls, Rrs, LFE 335 AV_CH_BACK_LEFT | 336 AV_CH_BACK_RIGHT | 337 AV_CH_FRONT_LEFT_OF_CENTER | 338 AV_CH_FRONT_RIGHT_OF_CENTER | 339 AV_CH_LOW_FREQUENCY }, 340 341 { MOV_CH_LAYOUT_DTS_8_1_B, AV_CH_LAYOUT_7POINT1_WIDE | // Lc, C, Rc, L, R, Ls, Cs, Rs, LFE 342 AV_CH_BACK_CENTER }, 343 { 0, 0 }, 344}; 345 346static 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, 354 mov_ch_layout_map_7ch, 355 mov_ch_layout_map_8ch, 356 mov_ch_layout_map_9ch, 357}; 358 359static const enum MovChannelLayoutTag mov_ch_layouts_aac[] = { 360 MOV_CH_LAYOUT_MONO, 361 MOV_CH_LAYOUT_STEREO, 362 MOV_CH_LAYOUT_AC3_1_0_1, 363 MOV_CH_LAYOUT_MPEG_3_0_B, 364 MOV_CH_LAYOUT_ITU_2_1, 365 MOV_CH_LAYOUT_DVD_4, 366 MOV_CH_LAYOUT_QUADRAPHONIC, 367 MOV_CH_LAYOUT_MPEG_4_0_B, 368 MOV_CH_LAYOUT_ITU_2_2, 369 MOV_CH_LAYOUT_AC3_2_1_1, 370 MOV_CH_LAYOUT_DTS_3_1, 371 MOV_CH_LAYOUT_MPEG_5_0_D, 372 MOV_CH_LAYOUT_DVD_18, 373 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, 383 0, 384}; 385 386static const enum MovChannelLayoutTag mov_ch_layouts_ac3[] = { 387 MOV_CH_LAYOUT_MONO, 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, 392 MOV_CH_LAYOUT_DVD_4, 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, 401 0, 402}; 403 404static const enum MovChannelLayoutTag mov_ch_layouts_alac[] = { 405 MOV_CH_LAYOUT_MONO, 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, 413 0, 414}; 415 416static 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 }, 424}; 425 426uint64_t ff_mov_get_channel_layout(uint32_t tag, uint32_t bitmap) 427{ 428 int i, channels; 429 const struct MovChannelLayoutMap *layout_map; 430 431 /* use ff_mov_get_channel_label() to build a layout instead */ 432 if (tag == MOV_CH_LAYOUT_USE_DESCRIPTIONS) 433 return 0; 434 435 /* handle the use of the channel bitmap */ 436 if (tag == MOV_CH_LAYOUT_USE_BITMAP) 437 return bitmap < 0x40000 ? bitmap : 0; 438 439 /* get the layout map based on the channel count for the specified layout tag */ 440 channels = tag & 0xFFFF; 441 if (channels > 9) 442 channels = 0; 443 layout_map = mov_ch_layout_map[channels]; 444 445 /* 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) 448 break; 449 } 450 return layout_map[i].layout; 451} 452 453uint32_t ff_mov_get_channel_label(uint32_t label) 454{ 455 if (label == 0) 456 return 0; 457 if (label <= 18) 458 return 1U << (label - 1); 459 if (label == 38) 460 return AV_CH_STEREO_LEFT; 461 if (label == 39) 462 return AV_CH_STEREO_RIGHT; 463 return 0; 464} 465 466uint32_t ff_mov_get_channel_layout_tag(enum CodecID codec_id, 467 uint64_t channel_layout, 468 uint32_t *bitmap) 469{ 470 int i, j; 471 uint32_t tag = 0; 472 const enum MovChannelLayoutTag *layouts = NULL; 473 474 /* 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) 477 break; 478 } 479 if (mov_codec_ch_layouts[i].codec_id != CODEC_ID_NONE) 480 layouts = mov_codec_ch_layouts[i].layouts; 481 482 if (layouts) { 483 int channels; 484 const struct MovChannelLayoutMap *layout_map; 485 486 /* get the layout map based on the channel count */ 487 channels = av_get_channel_layout_nb_channels(channel_layout); 488 if (channels > 9) 489 channels = 0; 490 layout_map = mov_ch_layout_map[channels]; 491 492 /* find the layout tag for the specified channel layout */ 493 for (i = 0; layouts[i] != 0; i++) { 494 if (layouts[i] & 0xFFFF != channels) 495 continue; 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) 499 break; 500 } 501 if (layout_map[j].tag) 502 break; 503 } 504 tag = layouts[i]; 505 } 506 507 /* 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; 511 } else 512 *bitmap = 0; 513 514 /* TODO: set channel descriptions as a secondary backup */ 515 516 return tag; 517} 518