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Imported Debian version 2.4.3~trusty1
[deb_ffmpeg.git] / ffmpeg / libavformat / mov_chan.c
CommitLineData
2ba45a60
DM		 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 * 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
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}
ffmpeg Piment Noir Debian package repository