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 */ 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 { 0, 0 }, 159}; 160 161static 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 175static 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 186static 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 208static 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 227static 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 247static 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 275static 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 334static 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 347static const struct MovChannelLayoutMap *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 360static 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 387static 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 405static 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 417static 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 432static 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 454uint64_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 481static 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 494uint32_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 547int 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} 593