| /* |
| * Copyright (c) 2011 Justin Ruggles |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| /** |
| * mov 'chan' tag reading/writing. |
| * @author Justin Ruggles |
| */ |
| |
| #include <stdint.h> |
| |
| #include "libavutil/channel_layout.h" |
| #include "libavcodec/avcodec.h" |
| #include "mov_chan.h" |
| |
| /** |
| * Channel Layout Tag |
| * This tells which channels are present in the audio stream and the order in |
| * which they appear. |
| * |
| * @note We're using the channel layout tag to indicate channel order |
| * when the value is greater than 0x10000. The Apple documentation has |
| * some contradictions as to how this is actually supposed to be handled. |
| * |
| * Core Audio File Format Spec: |
| * "The high 16 bits indicates a specific ordering of the channels." |
| * Core Audio Data Types Reference: |
| * "These identifiers specify the channels included in a layout but |
| * do not specify a particular ordering of those channels." |
| */ |
| enum MovChannelLayoutTag { |
| #define MOV_CH_LAYOUT_UNKNOWN 0xFFFF0000 |
| MOV_CH_LAYOUT_USE_DESCRIPTIONS = ( 0 << 16) | 0, |
| MOV_CH_LAYOUT_USE_BITMAP = ( 1 << 16) | 0, |
| MOV_CH_LAYOUT_DISCRETEINORDER = (147 << 16) | 0, |
| MOV_CH_LAYOUT_MONO = (100 << 16) | 1, |
| MOV_CH_LAYOUT_STEREO = (101 << 16) | 2, |
| MOV_CH_LAYOUT_STEREOHEADPHONES = (102 << 16) | 2, |
| MOV_CH_LAYOUT_MATRIXSTEREO = (103 << 16) | 2, |
| MOV_CH_LAYOUT_MIDSIDE = (104 << 16) | 2, |
| MOV_CH_LAYOUT_XY = (105 << 16) | 2, |
| MOV_CH_LAYOUT_BINAURAL = (106 << 16) | 2, |
| MOV_CH_LAYOUT_AMBISONIC_B_FORMAT = (107 << 16) | 4, |
| MOV_CH_LAYOUT_QUADRAPHONIC = (108 << 16) | 4, |
| MOV_CH_LAYOUT_PENTAGONAL = (109 << 16) | 5, |
| MOV_CH_LAYOUT_HEXAGONAL = (110 << 16) | 6, |
| MOV_CH_LAYOUT_OCTAGONAL = (111 << 16) | 8, |
| MOV_CH_LAYOUT_CUBE = (112 << 16) | 8, |
| MOV_CH_LAYOUT_MPEG_3_0_A = (113 << 16) | 3, |
| MOV_CH_LAYOUT_MPEG_3_0_B = (114 << 16) | 3, |
| MOV_CH_LAYOUT_MPEG_4_0_A = (115 << 16) | 4, |
| MOV_CH_LAYOUT_MPEG_4_0_B = (116 << 16) | 4, |
| MOV_CH_LAYOUT_MPEG_5_0_A = (117 << 16) | 5, |
| MOV_CH_LAYOUT_MPEG_5_0_B = (118 << 16) | 5, |
| MOV_CH_LAYOUT_MPEG_5_0_C = (119 << 16) | 5, |
| MOV_CH_LAYOUT_MPEG_5_0_D = (120 << 16) | 5, |
| MOV_CH_LAYOUT_MPEG_5_1_A = (121 << 16) | 6, |
| MOV_CH_LAYOUT_MPEG_5_1_B = (122 << 16) | 6, |
| MOV_CH_LAYOUT_MPEG_5_1_C = (123 << 16) | 6, |
| MOV_CH_LAYOUT_MPEG_5_1_D = (124 << 16) | 6, |
| MOV_CH_LAYOUT_MPEG_6_1_A = (125 << 16) | 7, |
| MOV_CH_LAYOUT_MPEG_7_1_A = (126 << 16) | 8, |
| MOV_CH_LAYOUT_MPEG_7_1_B = (127 << 16) | 8, |
| MOV_CH_LAYOUT_MPEG_7_1_C = (128 << 16) | 8, |
| MOV_CH_LAYOUT_EMAGIC_DEFAULT_7_1 = (129 << 16) | 8, |
| MOV_CH_LAYOUT_SMPTE_DTV = (130 << 16) | 8, |
| MOV_CH_LAYOUT_ITU_2_1 = (131 << 16) | 3, |
| MOV_CH_LAYOUT_ITU_2_2 = (132 << 16) | 4, |
| MOV_CH_LAYOUT_DVD_4 = (133 << 16) | 3, |
| MOV_CH_LAYOUT_DVD_5 = (134 << 16) | 4, |
| MOV_CH_LAYOUT_DVD_6 = (135 << 16) | 5, |
| MOV_CH_LAYOUT_DVD_10 = (136 << 16) | 4, |
| MOV_CH_LAYOUT_DVD_11 = (137 << 16) | 5, |
| MOV_CH_LAYOUT_DVD_18 = (138 << 16) | 5, |
| MOV_CH_LAYOUT_AUDIOUNIT_6_0 = (139 << 16) | 6, |
| MOV_CH_LAYOUT_AUDIOUNIT_7_0 = (140 << 16) | 7, |
| MOV_CH_LAYOUT_AUDIOUNIT_7_0_FRONT = (148 << 16) | 7, |
| MOV_CH_LAYOUT_AAC_6_0 = (141 << 16) | 6, |
| MOV_CH_LAYOUT_AAC_6_1 = (142 << 16) | 7, |
| MOV_CH_LAYOUT_AAC_7_0 = (143 << 16) | 7, |
| MOV_CH_LAYOUT_AAC_OCTAGONAL = (144 << 16) | 8, |
| MOV_CH_LAYOUT_TMH_10_2_STD = (145 << 16) | 16, |
| MOV_CH_LAYOUT_TMH_10_2_FULL = (146 << 16) | 21, |
| MOV_CH_LAYOUT_AC3_1_0_1 = (149 << 16) | 2, |
| MOV_CH_LAYOUT_AC3_3_0 = (150 << 16) | 3, |
| MOV_CH_LAYOUT_AC3_3_1 = (151 << 16) | 4, |
| MOV_CH_LAYOUT_AC3_3_0_1 = (152 << 16) | 4, |
| MOV_CH_LAYOUT_AC3_2_1_1 = (153 << 16) | 4, |
| MOV_CH_LAYOUT_AC3_3_1_1 = (154 << 16) | 5, |
| MOV_CH_LAYOUT_EAC3_6_0_A = (155 << 16) | 6, |
| MOV_CH_LAYOUT_EAC3_7_0_A = (156 << 16) | 7, |
| MOV_CH_LAYOUT_EAC3_6_1_A = (157 << 16) | 7, |
| MOV_CH_LAYOUT_EAC3_6_1_B = (158 << 16) | 7, |
| MOV_CH_LAYOUT_EAC3_6_1_C = (159 << 16) | 7, |
| MOV_CH_LAYOUT_EAC3_7_1_A = (160 << 16) | 8, |
| MOV_CH_LAYOUT_EAC3_7_1_B = (161 << 16) | 8, |
| MOV_CH_LAYOUT_EAC3_7_1_C = (162 << 16) | 8, |
| MOV_CH_LAYOUT_EAC3_7_1_D = (163 << 16) | 8, |
| MOV_CH_LAYOUT_EAC3_7_1_E = (164 << 16) | 8, |
| MOV_CH_LAYOUT_EAC3_7_1_F = (165 << 16) | 8, |
| MOV_CH_LAYOUT_EAC3_7_1_G = (166 << 16) | 8, |
| MOV_CH_LAYOUT_EAC3_7_1_H = (167 << 16) | 8, |
| MOV_CH_LAYOUT_DTS_3_1 = (168 << 16) | 4, |
| MOV_CH_LAYOUT_DTS_4_1 = (169 << 16) | 5, |
| MOV_CH_LAYOUT_DTS_6_0_A = (170 << 16) | 6, |
| MOV_CH_LAYOUT_DTS_6_0_B = (171 << 16) | 6, |
| MOV_CH_LAYOUT_DTS_6_0_C = (172 << 16) | 6, |
| MOV_CH_LAYOUT_DTS_6_1_A = (173 << 16) | 7, |
| MOV_CH_LAYOUT_DTS_6_1_B = (174 << 16) | 7, |
| MOV_CH_LAYOUT_DTS_6_1_C = (175 << 16) | 7, |
| MOV_CH_LAYOUT_DTS_6_1_D = (182 << 16) | 7, |
| MOV_CH_LAYOUT_DTS_7_0 = (176 << 16) | 7, |
| MOV_CH_LAYOUT_DTS_7_1 = (177 << 16) | 8, |
| MOV_CH_LAYOUT_DTS_8_0_A = (178 << 16) | 8, |
| MOV_CH_LAYOUT_DTS_8_0_B = (179 << 16) | 8, |
| MOV_CH_LAYOUT_DTS_8_1_A = (180 << 16) | 9, |
| MOV_CH_LAYOUT_DTS_8_1_B = (181 << 16) | 9, |
| }; |
| |
| struct MovChannelLayoutMap { |
| uint32_t tag; |
| uint64_t layout; |
| }; |
| |
| static const struct MovChannelLayoutMap mov_ch_layout_map_misc[] = { |
| { MOV_CH_LAYOUT_USE_DESCRIPTIONS, 0 }, |
| { MOV_CH_LAYOUT_USE_BITMAP, 0 }, |
| { MOV_CH_LAYOUT_DISCRETEINORDER, 0 }, |
| { MOV_CH_LAYOUT_UNKNOWN, 0 }, |
| { MOV_CH_LAYOUT_TMH_10_2_STD, 0 }, // L, R, C, Vhc, Lsd, Rsd, |
| // Ls, Rs, Vhl, Vhr, Lw, Rw, |
| // Csd, Cs, LFE1, LFE2 |
| { MOV_CH_LAYOUT_TMH_10_2_FULL, 0 }, // L, R, C, Vhc, Lsd, Rsd, |
| // Ls, Rs, Vhl, Vhr, Lw, Rw, |
| // Csd, Cs, LFE1, LFE2, Lc, Rc, |
| // HI, VI, Haptic |
| { 0, 0 }, |
| }; |
| |
| static const struct MovChannelLayoutMap mov_ch_layout_map_1ch[] = { |
| { MOV_CH_LAYOUT_MONO, AV_CH_LAYOUT_MONO }, // C |
| { 0, 0 }, |
| }; |
| |
| static const struct MovChannelLayoutMap mov_ch_layout_map_2ch[] = { |
| { MOV_CH_LAYOUT_STEREO, AV_CH_LAYOUT_STEREO }, // L, R |
| { MOV_CH_LAYOUT_STEREOHEADPHONES, AV_CH_LAYOUT_STEREO }, // L, R |
| { MOV_CH_LAYOUT_BINAURAL, AV_CH_LAYOUT_STEREO }, // L, R |
| { MOV_CH_LAYOUT_MIDSIDE, AV_CH_LAYOUT_STEREO }, // C, sides |
| { MOV_CH_LAYOUT_XY, AV_CH_LAYOUT_STEREO }, // X (left), Y (right) |
| |
| { MOV_CH_LAYOUT_MATRIXSTEREO, AV_CH_LAYOUT_STEREO_DOWNMIX }, // Lt, Rt |
| |
| { MOV_CH_LAYOUT_AC3_1_0_1, AV_CH_LAYOUT_MONO | // C, LFE |
| AV_CH_LOW_FREQUENCY }, |
| { 0, 0 }, |
| }; |
| |
| static const struct MovChannelLayoutMap mov_ch_layout_map_3ch[] = { |
| { MOV_CH_LAYOUT_MPEG_3_0_A, AV_CH_LAYOUT_SURROUND }, // L, R, C |
| { MOV_CH_LAYOUT_MPEG_3_0_B, AV_CH_LAYOUT_SURROUND }, // C, L, R |
| { MOV_CH_LAYOUT_AC3_3_0, AV_CH_LAYOUT_SURROUND }, // L, C, R |
| |
| { MOV_CH_LAYOUT_ITU_2_1, AV_CH_LAYOUT_2_1 }, // L, R, Cs |
| |
| { MOV_CH_LAYOUT_DVD_4, AV_CH_LAYOUT_2POINT1 }, // L, R, LFE |
| { 0, 0 }, |
| }; |
| |
| static const struct MovChannelLayoutMap mov_ch_layout_map_4ch[] = { |
| { MOV_CH_LAYOUT_AMBISONIC_B_FORMAT, 0 }, // W, X, Y, Z |
| |
| { MOV_CH_LAYOUT_QUADRAPHONIC, AV_CH_LAYOUT_QUAD }, // L, R, Rls, Rrs |
| |
| { MOV_CH_LAYOUT_MPEG_4_0_A, AV_CH_LAYOUT_4POINT0 }, // L, R, C, Cs |
| { MOV_CH_LAYOUT_MPEG_4_0_B, AV_CH_LAYOUT_4POINT0 }, // C, L, R, Cs |
| { MOV_CH_LAYOUT_AC3_3_1, AV_CH_LAYOUT_4POINT0 }, // L, C, R, Cs |
| |
| { MOV_CH_LAYOUT_ITU_2_2, AV_CH_LAYOUT_2_2 }, // L, R, Ls, Rs |
| |
| { MOV_CH_LAYOUT_DVD_5, AV_CH_LAYOUT_2_1 | // L, R, LFE, Cs |
| AV_CH_LOW_FREQUENCY }, |
| { MOV_CH_LAYOUT_AC3_2_1_1, AV_CH_LAYOUT_2_1 | // L, R, Cs, LFE |
| AV_CH_LOW_FREQUENCY }, |
| |
| { MOV_CH_LAYOUT_DVD_10, AV_CH_LAYOUT_3POINT1 }, // L, R, C, LFE |
| { MOV_CH_LAYOUT_AC3_3_0_1, AV_CH_LAYOUT_3POINT1 }, // L, C, R, LFE |
| { MOV_CH_LAYOUT_DTS_3_1, AV_CH_LAYOUT_3POINT1 }, // C, L, R, LFE |
| { 0, 0 }, |
| }; |
| |
| static const struct MovChannelLayoutMap mov_ch_layout_map_5ch[] = { |
| { MOV_CH_LAYOUT_PENTAGONAL, AV_CH_LAYOUT_5POINT0_BACK }, // L, R, Rls, Rrs, C |
| |
| { MOV_CH_LAYOUT_MPEG_5_0_A, AV_CH_LAYOUT_5POINT0 }, // L, R, C, Ls, Rs |
| { MOV_CH_LAYOUT_MPEG_5_0_B, AV_CH_LAYOUT_5POINT0 }, // L, R, Ls, Rs, C |
| { MOV_CH_LAYOUT_MPEG_5_0_C, AV_CH_LAYOUT_5POINT0 }, // L, C, R, Ls, Rs |
| { MOV_CH_LAYOUT_MPEG_5_0_D, AV_CH_LAYOUT_5POINT0 }, // C, L, R, Ls, Rs |
| |
| { MOV_CH_LAYOUT_DVD_6, AV_CH_LAYOUT_2_2 | // L, R, LFE, Ls, Rs |
| AV_CH_LOW_FREQUENCY }, |
| { MOV_CH_LAYOUT_DVD_18, AV_CH_LAYOUT_2_2 | // L, R, Ls, Rs, LFE |
| AV_CH_LOW_FREQUENCY }, |
| |
| { MOV_CH_LAYOUT_DVD_11, AV_CH_LAYOUT_4POINT1 }, // L, R, C, LFE, Cs |
| { MOV_CH_LAYOUT_AC3_3_1_1, AV_CH_LAYOUT_4POINT1 }, // L, C, R, Cs, LFE |
| { MOV_CH_LAYOUT_DTS_4_1, AV_CH_LAYOUT_4POINT1 }, // C, L, R, Cs, LFE |
| { 0, 0 }, |
| }; |
| |
| static const struct MovChannelLayoutMap mov_ch_layout_map_6ch[] = { |
| { MOV_CH_LAYOUT_HEXAGONAL, AV_CH_LAYOUT_HEXAGONAL }, // L, R, Rls, Rrs, C, Cs |
| { MOV_CH_LAYOUT_DTS_6_0_C, AV_CH_LAYOUT_HEXAGONAL }, // C, Cs, L, R, Rls, Rrs |
| |
| { MOV_CH_LAYOUT_MPEG_5_1_A, AV_CH_LAYOUT_5POINT1 }, // L, R, C, LFE, Ls, Rs |
| { MOV_CH_LAYOUT_MPEG_5_1_B, AV_CH_LAYOUT_5POINT1 }, // L, R, Ls, Rs, C, LFE |
| { MOV_CH_LAYOUT_MPEG_5_1_C, AV_CH_LAYOUT_5POINT1 }, // L, C, R, Ls, Rs, LFE |
| { MOV_CH_LAYOUT_MPEG_5_1_D, AV_CH_LAYOUT_5POINT1 }, // C, L, R, Ls, Rs, LFE |
| |
| { MOV_CH_LAYOUT_AUDIOUNIT_6_0, AV_CH_LAYOUT_6POINT0 }, // L, R, Ls, Rs, C, Cs |
| { MOV_CH_LAYOUT_AAC_6_0, AV_CH_LAYOUT_6POINT0 }, // C, L, R, Ls, Rs, Cs |
| { MOV_CH_LAYOUT_EAC3_6_0_A, AV_CH_LAYOUT_6POINT0 }, // L, C, R, Ls, Rs, Cs |
| |
| { MOV_CH_LAYOUT_DTS_6_0_A, AV_CH_LAYOUT_6POINT0_FRONT }, // Lc, Rc, L, R, Ls, Rs |
| |
| { MOV_CH_LAYOUT_DTS_6_0_B, AV_CH_LAYOUT_5POINT0_BACK | // C, L, R, Rls, Rrs, Ts |
| AV_CH_TOP_CENTER }, |
| { 0, 0 }, |
| }; |
| |
| static const struct MovChannelLayoutMap mov_ch_layout_map_7ch[] = { |
| { MOV_CH_LAYOUT_MPEG_6_1_A, AV_CH_LAYOUT_6POINT1 }, // L, R, C, LFE, Ls, Rs, Cs |
| { MOV_CH_LAYOUT_AAC_6_1, AV_CH_LAYOUT_6POINT1 }, // C, L, R, Ls, Rs, Cs, LFE |
| { MOV_CH_LAYOUT_EAC3_6_1_A, AV_CH_LAYOUT_6POINT1 }, // L, C, R, Ls, Rs, LFE, Cs |
| { MOV_CH_LAYOUT_DTS_6_1_D, AV_CH_LAYOUT_6POINT1 }, // C, L, R, Ls, Rs, LFE, Cs |
| |
| { MOV_CH_LAYOUT_AUDIOUNIT_7_0, AV_CH_LAYOUT_7POINT0 }, // L, R, Ls, Rs, C, Rls, Rrs |
| { MOV_CH_LAYOUT_AAC_7_0, AV_CH_LAYOUT_7POINT0 }, // C, L, R, Ls, Rs, Rls, Rrs |
| { MOV_CH_LAYOUT_EAC3_7_0_A, AV_CH_LAYOUT_7POINT0 }, // L, C, R, Ls, Rs, Rls, Rrs |
| |
| { MOV_CH_LAYOUT_AUDIOUNIT_7_0_FRONT, AV_CH_LAYOUT_7POINT0_FRONT }, // L, R, Ls, Rs, C, Lc, Rc |
| { MOV_CH_LAYOUT_DTS_7_0, AV_CH_LAYOUT_7POINT0_FRONT }, // Lc, C, Rc, L, R, Ls, Rs |
| |
| { MOV_CH_LAYOUT_EAC3_6_1_B, AV_CH_LAYOUT_5POINT1 | // L, C, R, Ls, Rs, LFE, Ts |
| AV_CH_TOP_CENTER }, |
| |
| { MOV_CH_LAYOUT_EAC3_6_1_C, AV_CH_LAYOUT_5POINT1 | // L, C, R, Ls, Rs, LFE, Vhc |
| AV_CH_TOP_FRONT_CENTER }, |
| |
| { MOV_CH_LAYOUT_DTS_6_1_A, AV_CH_LAYOUT_6POINT1_FRONT }, // Lc, Rc, L, R, Ls, Rs, LFE |
| |
| { MOV_CH_LAYOUT_DTS_6_1_B, AV_CH_LAYOUT_5POINT1_BACK | // C, L, R, Rls, Rrs, Ts, LFE |
| AV_CH_TOP_CENTER }, |
| |
| { MOV_CH_LAYOUT_DTS_6_1_C, AV_CH_LAYOUT_6POINT1_BACK }, // C, Cs, L, R, Rls, Rrs, LFE |
| { 0, 0 }, |
| }; |
| |
| static const struct MovChannelLayoutMap mov_ch_layout_map_8ch[] = { |
| { MOV_CH_LAYOUT_OCTAGONAL, AV_CH_LAYOUT_OCTAGONAL }, // L, R, Rls, Rrs, C, Cs, Ls, Rs |
| { MOV_CH_LAYOUT_AAC_OCTAGONAL, AV_CH_LAYOUT_OCTAGONAL }, // C, L, R, Ls, Rs, Rls, Rrs, Cs |
| |
| { MOV_CH_LAYOUT_CUBE, AV_CH_LAYOUT_QUAD | // L, R, Rls, Rrs, Vhl, Vhr, Rlt, Rrt |
| AV_CH_TOP_FRONT_LEFT | |
| AV_CH_TOP_FRONT_RIGHT | |
| AV_CH_TOP_BACK_LEFT | |
| AV_CH_TOP_BACK_RIGHT }, |
| |
| { MOV_CH_LAYOUT_MPEG_7_1_A, AV_CH_LAYOUT_7POINT1_WIDE }, // L, R, C, LFE, Ls, Rs, Lc, Rc |
| { MOV_CH_LAYOUT_MPEG_7_1_B, AV_CH_LAYOUT_7POINT1_WIDE }, // C, Lc, Rc, L, R, Ls, Rs, LFE |
| { MOV_CH_LAYOUT_EMAGIC_DEFAULT_7_1, AV_CH_LAYOUT_7POINT1_WIDE }, // L, R, Ls, Rs, C, LFE, Lc, Rc |
| { MOV_CH_LAYOUT_EAC3_7_1_B, AV_CH_LAYOUT_7POINT1_WIDE }, // L, C, R, Ls, Rs, LFE, Lc, Rc |
| { MOV_CH_LAYOUT_DTS_7_1, AV_CH_LAYOUT_7POINT1_WIDE }, // Lc, C, Rc, L, R, Ls, Rs, LFE |
| |
| { MOV_CH_LAYOUT_MPEG_7_1_C, AV_CH_LAYOUT_7POINT1 }, // L, R, C, LFE, Ls, Rs, Rls, Rrs |
| { MOV_CH_LAYOUT_EAC3_7_1_A, AV_CH_LAYOUT_7POINT1 }, // L, C, R, Ls, Rs, LFE, Rls, Rrs |
| |
| { MOV_CH_LAYOUT_SMPTE_DTV, AV_CH_LAYOUT_5POINT1 | // L, R, C, LFE, Ls, Rs, Lt, Rt |
| AV_CH_LAYOUT_STEREO_DOWNMIX }, |
| |
| { MOV_CH_LAYOUT_EAC3_7_1_C, AV_CH_LAYOUT_5POINT1 | // L, C, R, Ls, Rs, LFE, Lsd, Rsd |
| AV_CH_SURROUND_DIRECT_LEFT | |
| AV_CH_SURROUND_DIRECT_RIGHT }, |
| |
| { MOV_CH_LAYOUT_EAC3_7_1_D, AV_CH_LAYOUT_5POINT1 | // L, C, R, Ls, Rs, LFE, Lw, Rw |
| AV_CH_WIDE_LEFT | |
| AV_CH_WIDE_RIGHT }, |
| |
| { MOV_CH_LAYOUT_EAC3_7_1_E, AV_CH_LAYOUT_5POINT1 | // L, C, R, Ls, Rs, LFE, Vhl, Vhr |
| AV_CH_TOP_FRONT_LEFT | |
| AV_CH_TOP_FRONT_RIGHT }, |
| |
| { MOV_CH_LAYOUT_EAC3_7_1_F, AV_CH_LAYOUT_5POINT1 | // L, C, R, Ls, Rs, LFE, Cs, Ts |
| AV_CH_BACK_CENTER | |
| AV_CH_TOP_CENTER }, |
| |
| { MOV_CH_LAYOUT_EAC3_7_1_G, AV_CH_LAYOUT_5POINT1 | // L, C, R, Ls, Rs, LFE, Cs, Vhc |
| AV_CH_BACK_CENTER | |
| AV_CH_TOP_FRONT_CENTER }, |
| |
| { MOV_CH_LAYOUT_EAC3_7_1_H, AV_CH_LAYOUT_5POINT1 | // L, C, R, Ls, Rs, LFE, Ts, Vhc |
| AV_CH_TOP_CENTER | |
| AV_CH_TOP_FRONT_CENTER }, |
| |
| { MOV_CH_LAYOUT_DTS_8_0_A, AV_CH_LAYOUT_2_2 | // Lc, Rc, L, R, Ls, Rs, Rls, Rrs |
| AV_CH_BACK_LEFT | |
| AV_CH_BACK_RIGHT | |
| AV_CH_FRONT_LEFT_OF_CENTER | |
| AV_CH_FRONT_RIGHT_OF_CENTER }, |
| |
| { MOV_CH_LAYOUT_DTS_8_0_B, AV_CH_LAYOUT_5POINT0 | // Lc, C, Rc, L, R, Ls, Cs, Rs |
| AV_CH_FRONT_LEFT_OF_CENTER | |
| AV_CH_FRONT_RIGHT_OF_CENTER | |
| AV_CH_BACK_CENTER }, |
| { 0, 0 }, |
| }; |
| |
| static const struct MovChannelLayoutMap mov_ch_layout_map_9ch[] = { |
| { MOV_CH_LAYOUT_DTS_8_1_A, AV_CH_LAYOUT_2_2 | // Lc, Rc, L, R, Ls, Rs, Rls, Rrs, LFE |
| AV_CH_BACK_LEFT | |
| AV_CH_BACK_RIGHT | |
| AV_CH_FRONT_LEFT_OF_CENTER | |
| AV_CH_FRONT_RIGHT_OF_CENTER | |
| AV_CH_LOW_FREQUENCY }, |
| |
| { MOV_CH_LAYOUT_DTS_8_1_B, AV_CH_LAYOUT_7POINT1_WIDE | // Lc, C, Rc, L, R, Ls, Cs, Rs, LFE |
| AV_CH_BACK_CENTER }, |
| { 0, 0 }, |
| }; |
| |
| static const struct MovChannelLayoutMap * const mov_ch_layout_map[] = { |
| mov_ch_layout_map_misc, |
| mov_ch_layout_map_1ch, |
| mov_ch_layout_map_2ch, |
| mov_ch_layout_map_3ch, |
| mov_ch_layout_map_4ch, |
| mov_ch_layout_map_5ch, |
| mov_ch_layout_map_6ch, |
| mov_ch_layout_map_7ch, |
| mov_ch_layout_map_8ch, |
| mov_ch_layout_map_9ch, |
| }; |
| |
| static const enum MovChannelLayoutTag mov_ch_layouts_aac[] = { |
| MOV_CH_LAYOUT_MONO, |
| MOV_CH_LAYOUT_STEREO, |
| MOV_CH_LAYOUT_AC3_1_0_1, |
| MOV_CH_LAYOUT_MPEG_3_0_B, |
| MOV_CH_LAYOUT_ITU_2_1, |
| MOV_CH_LAYOUT_DVD_4, |
| MOV_CH_LAYOUT_QUADRAPHONIC, |
| MOV_CH_LAYOUT_MPEG_4_0_B, |
| MOV_CH_LAYOUT_ITU_2_2, |
| MOV_CH_LAYOUT_AC3_2_1_1, |
| MOV_CH_LAYOUT_DTS_3_1, |
| MOV_CH_LAYOUT_MPEG_5_0_D, |
| MOV_CH_LAYOUT_DVD_18, |
| MOV_CH_LAYOUT_DTS_4_1, |
| MOV_CH_LAYOUT_MPEG_5_1_D, |
| MOV_CH_LAYOUT_AAC_6_0, |
| MOV_CH_LAYOUT_DTS_6_0_A, |
| MOV_CH_LAYOUT_AAC_6_1, |
| MOV_CH_LAYOUT_AAC_7_0, |
| MOV_CH_LAYOUT_DTS_6_1_A, |
| MOV_CH_LAYOUT_AAC_OCTAGONAL, |
| MOV_CH_LAYOUT_MPEG_7_1_B, |
| MOV_CH_LAYOUT_DTS_8_0_A, |
| 0, |
| }; |
| |
| static const enum MovChannelLayoutTag mov_ch_layouts_ac3[] = { |
| MOV_CH_LAYOUT_MONO, |
| MOV_CH_LAYOUT_STEREO, |
| MOV_CH_LAYOUT_AC3_1_0_1, |
| MOV_CH_LAYOUT_AC3_3_0, |
| MOV_CH_LAYOUT_ITU_2_1, |
| MOV_CH_LAYOUT_DVD_4, |
| MOV_CH_LAYOUT_AC3_3_1, |
| MOV_CH_LAYOUT_ITU_2_2, |
| MOV_CH_LAYOUT_AC3_2_1_1, |
| MOV_CH_LAYOUT_AC3_3_0_1, |
| MOV_CH_LAYOUT_MPEG_5_0_C, |
| MOV_CH_LAYOUT_DVD_18, |
| MOV_CH_LAYOUT_AC3_3_1_1, |
| MOV_CH_LAYOUT_MPEG_5_1_C, |
| 0, |
| }; |
| |
| static const enum MovChannelLayoutTag mov_ch_layouts_alac[] = { |
| MOV_CH_LAYOUT_MONO, |
| MOV_CH_LAYOUT_STEREO, |
| MOV_CH_LAYOUT_MPEG_3_0_B, |
| MOV_CH_LAYOUT_MPEG_4_0_B, |
| MOV_CH_LAYOUT_MPEG_5_0_D, |
| MOV_CH_LAYOUT_MPEG_5_1_D, |
| MOV_CH_LAYOUT_AAC_6_1, |
| MOV_CH_LAYOUT_MPEG_7_1_B, |
| 0, |
| }; |
| |
| static const enum MovChannelLayoutTag mov_ch_layouts_wav[] = { |
| MOV_CH_LAYOUT_MONO, |
| MOV_CH_LAYOUT_STEREO, |
| MOV_CH_LAYOUT_MATRIXSTEREO, |
| MOV_CH_LAYOUT_MPEG_3_0_A, |
| MOV_CH_LAYOUT_QUADRAPHONIC, |
| MOV_CH_LAYOUT_MPEG_5_0_A, |
| MOV_CH_LAYOUT_MPEG_5_1_A, |
| MOV_CH_LAYOUT_MPEG_6_1_A, |
| MOV_CH_LAYOUT_MPEG_7_1_A, |
| MOV_CH_LAYOUT_MPEG_7_1_C, |
| MOV_CH_LAYOUT_SMPTE_DTV, |
| 0, |
| }; |
| |
| static const struct { |
| enum AVCodecID codec_id; |
| const enum MovChannelLayoutTag *layouts; |
| } mov_codec_ch_layouts[] = { |
| { AV_CODEC_ID_AAC, mov_ch_layouts_aac }, |
| { AV_CODEC_ID_AC3, mov_ch_layouts_ac3 }, |
| { AV_CODEC_ID_ALAC, mov_ch_layouts_alac }, |
| { AV_CODEC_ID_PCM_U8, mov_ch_layouts_wav }, |
| { AV_CODEC_ID_PCM_S8, mov_ch_layouts_wav }, |
| { AV_CODEC_ID_PCM_S16LE, mov_ch_layouts_wav }, |
| { AV_CODEC_ID_PCM_S16BE, mov_ch_layouts_wav }, |
| { AV_CODEC_ID_PCM_S24LE, mov_ch_layouts_wav }, |
| { AV_CODEC_ID_PCM_S24BE, mov_ch_layouts_wav }, |
| { AV_CODEC_ID_PCM_S32LE, mov_ch_layouts_wav }, |
| { AV_CODEC_ID_PCM_S32BE, mov_ch_layouts_wav }, |
| { AV_CODEC_ID_PCM_F32LE, mov_ch_layouts_wav }, |
| { AV_CODEC_ID_PCM_F32BE, mov_ch_layouts_wav }, |
| { AV_CODEC_ID_PCM_F64LE, mov_ch_layouts_wav }, |
| { AV_CODEC_ID_PCM_F64BE, mov_ch_layouts_wav }, |
| { AV_CODEC_ID_NONE, NULL }, |
| }; |
| |
| uint64_t ff_mov_get_channel_layout(uint32_t tag, uint32_t bitmap) |
| { |
| int i, channels; |
| const struct MovChannelLayoutMap *layout_map; |
| |
| /* use ff_mov_get_channel_label() to build a layout instead */ |
| if (tag == MOV_CH_LAYOUT_USE_DESCRIPTIONS) |
| return 0; |
| |
| /* handle the use of the channel bitmap */ |
| if (tag == MOV_CH_LAYOUT_USE_BITMAP) |
| return bitmap < 0x40000 ? bitmap : 0; |
| |
| /* get the layout map based on the channel count for the specified layout tag */ |
| channels = tag & 0xFFFF; |
| if (channels > 9) |
| channels = 0; |
| layout_map = mov_ch_layout_map[channels]; |
| |
| /* find the channel layout for the specified layout tag */ |
| for (i = 0; layout_map[i].tag != 0; i++) { |
| if (layout_map[i].tag == tag) |
| break; |
| } |
| return layout_map[i].layout; |
| } |
| |
| static uint32_t mov_get_channel_label(uint32_t label) |
| { |
| if (label == 0) |
| return 0; |
| if (label <= 18) |
| return 1U << (label - 1); |
| if (label == 38) |
| return AV_CH_STEREO_LEFT; |
| if (label == 39) |
| return AV_CH_STEREO_RIGHT; |
| return 0; |
| } |
| |
| uint32_t ff_mov_get_channel_layout_tag(enum AVCodecID codec_id, |
| uint64_t channel_layout, |
| uint32_t *bitmap) |
| { |
| int i, j; |
| uint32_t tag = 0; |
| const enum MovChannelLayoutTag *layouts = NULL; |
| |
| /* find the layout list for the specified codec */ |
| for (i = 0; mov_codec_ch_layouts[i].codec_id != AV_CODEC_ID_NONE; i++) { |
| if (mov_codec_ch_layouts[i].codec_id == codec_id) |
| break; |
| } |
| if (mov_codec_ch_layouts[i].codec_id != AV_CODEC_ID_NONE) |
| layouts = mov_codec_ch_layouts[i].layouts; |
| |
| if (layouts) { |
| int channels; |
| const struct MovChannelLayoutMap *layout_map; |
| |
| /* get the layout map based on the channel count */ |
| channels = av_get_channel_layout_nb_channels(channel_layout); |
| if (channels > 9) |
| channels = 0; |
| layout_map = mov_ch_layout_map[channels]; |
| |
| /* find the layout tag for the specified channel layout */ |
| for (i = 0; layouts[i] != 0; i++) { |
| if ((layouts[i] & 0xFFFF) != channels) |
| continue; |
| for (j = 0; layout_map[j].tag != 0; j++) { |
| if (layout_map[j].tag == layouts[i] && |
| layout_map[j].layout == channel_layout) |
| break; |
| } |
| if (layout_map[j].tag) |
| break; |
| } |
| tag = layouts[i]; |
| } |
| |
| /* if no tag was found, use channel bitmap as a backup if possible */ |
| if (tag == 0 && channel_layout > 0 && channel_layout < 0x40000) { |
| tag = MOV_CH_LAYOUT_USE_BITMAP; |
| *bitmap = (uint32_t)channel_layout; |
| } else |
| *bitmap = 0; |
| |
| /* TODO: set channel descriptions as a secondary backup */ |
| |
| return tag; |
| } |
| |
| int ff_mov_read_chan(AVFormatContext *s, AVIOContext *pb, AVStream *st, |
| int64_t size) |
| { |
| uint32_t layout_tag, bitmap, num_descr, label_mask; |
| int i; |
| |
| if (size < 12) |
| return AVERROR_INVALIDDATA; |
| |
| layout_tag = avio_rb32(pb); |
| bitmap = avio_rb32(pb); |
| num_descr = avio_rb32(pb); |
| |
| av_log(s, AV_LOG_TRACE, "chan: layout=%u bitmap=%u num_descr=%u\n", |
| layout_tag, bitmap, num_descr); |
| |
| if (size < 12ULL + num_descr * 20ULL) |
| return 0; |
| |
| label_mask = 0; |
| for (i = 0; i < num_descr; i++) { |
| uint32_t label; |
| if (pb->eof_reached) { |
| av_log(s, AV_LOG_ERROR, |
| "reached EOF while reading channel layout\n"); |
| return AVERROR_INVALIDDATA; |
| } |
| label = avio_rb32(pb); // mChannelLabel |
| avio_rb32(pb); // mChannelFlags |
| avio_rl32(pb); // mCoordinates[0] |
| avio_rl32(pb); // mCoordinates[1] |
| avio_rl32(pb); // mCoordinates[2] |
| size -= 20; |
| if (layout_tag == 0) { |
| uint32_t mask_incr = mov_get_channel_label(label); |
| if (mask_incr == 0) { |
| label_mask = 0; |
| break; |
| } |
| label_mask |= mask_incr; |
| } |
| } |
| if (layout_tag == 0) { |
| if (label_mask) |
| st->codec->channel_layout = label_mask; |
| } else |
| st->codec->channel_layout = ff_mov_get_channel_layout(layout_tag, bitmap); |
| avio_skip(pb, size - 12); |
| |
| return 0; |
| } |
