1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
|
/*
* 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 <assert.h>
#include <stdint.h>
#include "libavutil/avassert.h"
#include "libavutil/channel_layout.h"
#include "libavutil/mem.h"
#include "libavcodec/codec_id.h"
#include "mov_chan.h"
enum {
c_L = AV_CHAN_FRONT_LEFT,
c_R = AV_CHAN_FRONT_RIGHT,
c_C = AV_CHAN_FRONT_CENTER,
c_LFE = AV_CHAN_LOW_FREQUENCY,
c_Rls = AV_CHAN_BACK_LEFT,
c_Rrs = AV_CHAN_BACK_RIGHT,
c_Lc = AV_CHAN_FRONT_LEFT_OF_CENTER,
c_Rc = AV_CHAN_FRONT_RIGHT_OF_CENTER,
c_Cs = AV_CHAN_BACK_CENTER,
c_Ls = AV_CHAN_SIDE_LEFT,
c_Rs = AV_CHAN_SIDE_RIGHT,
c_Ts = AV_CHAN_TOP_CENTER,
c_Vhl = AV_CHAN_TOP_FRONT_LEFT,
c_Vhc = AV_CHAN_TOP_FRONT_CENTER,
c_Vhr = AV_CHAN_TOP_FRONT_RIGHT,
c_Rlt = AV_CHAN_TOP_BACK_LEFT,
// = AV_CHAN_TOP_BACK_CENTER,
c_Rrt = AV_CHAN_TOP_BACK_RIGHT,
c_Lt = AV_CHAN_STEREO_LEFT,
c_Rt = AV_CHAN_STEREO_RIGHT,
c_Lw = AV_CHAN_WIDE_LEFT,
c_Rw = AV_CHAN_WIDE_RIGHT,
c_Lsd = AV_CHAN_SURROUND_DIRECT_LEFT,
c_Rsd = AV_CHAN_SURROUND_DIRECT_RIGHT,
c_LFE2 = AV_CHAN_LOW_FREQUENCY_2,
// = AV_CHAN_TOP_SIDE_LEFT,
// = AV_CHAN_TOP_SIDE_RIGHT,
// = AV_CHAN_BOTTOM_FRONT_CENTER,
// = AV_CHAN_BOTTOM_FRONT_LEFT,
// = AV_CHAN_BOTTOM_FRONT_RIGHT,
c_W = AV_CHAN_AMBISONIC_BASE,
c_Y = AV_CHAN_AMBISONIC_BASE + 1,
c_Z = AV_CHAN_AMBISONIC_BASE + 2,
c_X = AV_CHAN_AMBISONIC_BASE + 3,
/* The following have no exact counterparts */
c_LFE1 = AV_CHAN_LOW_FREQUENCY,
c_Csd = AV_CHAN_NONE,
c_HI = AV_CHAN_NONE,
c_VI = AV_CHAN_NONE,
c_Haptic = AV_CHAN_NONE,
};
enum {
iso_L = AV_CHAN_FRONT_LEFT,
iso_R = AV_CHAN_FRONT_RIGHT,
iso_C = AV_CHAN_FRONT_CENTER,
iso_LFE = AV_CHAN_LOW_FREQUENCY,
iso_Lsr = AV_CHAN_BACK_LEFT,
iso_Rsr = AV_CHAN_BACK_RIGHT,
iso_Lc = AV_CHAN_FRONT_LEFT_OF_CENTER,
iso_Rc = AV_CHAN_FRONT_RIGHT_OF_CENTER,
iso_Cs = AV_CHAN_BACK_CENTER,
iso_Ls = AV_CHAN_SIDE_LEFT,
iso_Rs = AV_CHAN_SIDE_RIGHT,
iso_Ts = AV_CHAN_TOP_CENTER,
iso_Lv = AV_CHAN_TOP_FRONT_LEFT,
iso_Cv = AV_CHAN_TOP_FRONT_CENTER,
iso_Rv = AV_CHAN_TOP_FRONT_RIGHT,
iso_Lvr = AV_CHAN_TOP_BACK_LEFT,
iso_Cvr = AV_CHAN_TOP_BACK_CENTER,
iso_Rvr = AV_CHAN_TOP_BACK_RIGHT,
// = AV_CHAN_STEREO_LEFT,
// = AV_CHAN_STEREO_RIGHT,
iso_Lw = AV_CHAN_WIDE_LEFT,
iso_Rw = AV_CHAN_WIDE_RIGHT,
iso_Lsd = AV_CHAN_SURROUND_DIRECT_LEFT,
iso_Rsd = AV_CHAN_SURROUND_DIRECT_RIGHT,
iso_LFE2 = AV_CHAN_LOW_FREQUENCY_2,
iso_Lvss = AV_CHAN_TOP_SIDE_LEFT,
iso_Rvss = AV_CHAN_TOP_SIDE_RIGHT,
iso_Cb = AV_CHAN_BOTTOM_FRONT_CENTER,
iso_Lb = AV_CHAN_BOTTOM_FRONT_LEFT,
iso_Rb = AV_CHAN_BOTTOM_FRONT_RIGHT,
iso_Lss = AV_CHAN_SIDE_SURROUND_LEFT,
iso_Rss = AV_CHAN_SIDE_SURROUND_RIGHT,
/* The following have no exact counterparts */
iso_Lvs = AV_CHAN_NONE,
iso_Rvs = AV_CHAN_NONE,
};
struct MovChannelLayoutMap {
union {
uint32_t tag;
enum AVChannel id;
};
};
#define TAG(_tag, _cnt) {.tag = _tag}
#define ID(_0) {.id = c_##_0}
#define CHLIST01(_tag, _1) CHLIST(_tag, 1, ID(_1))
#define CHLIST02(_tag, _1, _2) CHLIST(_tag, 2, ID(_1), ID(_2))
#define CHLIST03(_tag, _1, _2, _3) CHLIST(_tag, 3, ID(_1), ID(_2), ID(_3))
#define CHLIST04(_tag, _1, _2, _3, _4) CHLIST(_tag, 4, ID(_1), ID(_2), ID(_3), ID(_4))
#define CHLIST05(_tag, _1, _2, _3, _4, _5) CHLIST(_tag, 5, ID(_1), ID(_2), ID(_3), ID(_4), ID(_5))
#define CHLIST06(_tag, _1, _2, _3, _4, _5, _6) CHLIST(_tag, 6, ID(_1), ID(_2), ID(_3), ID(_4), ID(_5), ID(_6))
#define CHLIST07(_tag, _1, _2, _3, _4, _5, _6, _7) CHLIST(_tag, 7, ID(_1), ID(_2), ID(_3), ID(_4), ID(_5), ID(_6), ID(_7))
#define CHLIST08(_tag, _1, _2, _3, _4, _5, _6, _7, _8) CHLIST(_tag, 8, ID(_1), ID(_2), ID(_3), ID(_4), ID(_5), ID(_6), ID(_7), ID(_8))
#define CHLIST09(_tag, _1, _2, _3, _4, _5, _6, _7, _8, _9) CHLIST(_tag, 9, ID(_1), ID(_2), ID(_3), ID(_4), ID(_5), ID(_6), ID(_7), ID(_8), ID(_9))
#define CHLIST16(_tag, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16) \
CHLIST(_tag, 16, ID(_1), ID(_2), ID(_3), ID(_4), ID(_5), ID(_6), ID(_7), ID(_8), ID(_9), ID(_10), \
ID(_11), ID(_12), ID(_13), ID(_14), ID(_15), ID(_16))
#define CHLIST21(_tag, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, _17, _18, _19, _20, _21) \
CHLIST(_tag, 21, ID(_1), ID(_2), ID(_3), ID(_4), ID(_5), ID(_6), ID(_7), ID(_8), ID(_9), ID(_10), \
ID(_11), ID(_12), ID(_13), ID(_14), ID(_15), ID(_16), ID(_17), ID(_18), ID(_19), ID(_20), ID(_21))
#define CHLIST24(_tag, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, _17, _18, _19, _20, _21, _22, _23, _24) \
CHLIST(_tag, 24, ID(_1), ID(_2), ID(_3), ID(_4), ID(_5), ID(_6), ID(_7), ID(_8), ID(_9), ID(_10), \
ID(_11), ID(_12), ID(_13), ID(_14), ID(_15), ID(_16), ID(_17), ID(_18), ID(_19), ID(_20), \
ID(_21), ID(_22), ID(_23), ID(_24))
#define MOV_CH_LAYOUT_MAP \
CHLIST01( MOV_CH_LAYOUT_MONO, C )\
CHLIST02( MOV_CH_LAYOUT_STEREO, L, R )\
CHLIST02( MOV_CH_LAYOUT_STEREOHEADPHONES, L, R )\
CHLIST02( MOV_CH_LAYOUT_BINAURAL, L, R )\
CHLIST02( MOV_CH_LAYOUT_MIDSIDE, L, R )\
CHLIST02( MOV_CH_LAYOUT_XY, L, R )\
CHLIST02( MOV_CH_LAYOUT_MATRIXSTEREO, Lt, Rt )\
CHLIST02( MOV_CH_LAYOUT_AC3_1_0_1, C, LFE )\
CHLIST03( MOV_CH_LAYOUT_MPEG_3_0_A, L, R, C )\
CHLIST03( MOV_CH_LAYOUT_MPEG_3_0_B, C, L, R )\
CHLIST03( MOV_CH_LAYOUT_AC3_3_0, L, C, R )\
CHLIST03( MOV_CH_LAYOUT_ITU_2_1, L, R, Cs )\
CHLIST03( MOV_CH_LAYOUT_DVD_4, L, R, LFE )\
CHLIST04( MOV_CH_LAYOUT_AMBISONIC_B_FORMAT, W, X, Y, Z )\
CHLIST04( MOV_CH_LAYOUT_QUADRAPHONIC, L, R, Rls, Rrs )\
CHLIST04( MOV_CH_LAYOUT_MPEG_4_0_A, L, R, C, Cs )\
CHLIST04( MOV_CH_LAYOUT_MPEG_4_0_B, C, L, R, Cs )\
CHLIST04( MOV_CH_LAYOUT_AC3_3_1, L, C, R, Cs )\
CHLIST04( MOV_CH_LAYOUT_ITU_2_2, L, R, Ls, Rs )\
CHLIST04( MOV_CH_LAYOUT_DVD_5, L, R, LFE, Cs )\
CHLIST04( MOV_CH_LAYOUT_AC3_2_1_1, L, R, Cs, LFE )\
CHLIST04( MOV_CH_LAYOUT_DVD_10, L, R, C, LFE )\
CHLIST04( MOV_CH_LAYOUT_AC3_3_0_1, L, C, R, LFE )\
CHLIST04( MOV_CH_LAYOUT_DTS_3_1, C, L, R, LFE )\
CHLIST05( MOV_CH_LAYOUT_PENTAGONAL, L, R, Rls, Rrs, C )\
CHLIST05( MOV_CH_LAYOUT_MPEG_5_0_A, L, R, C, Ls, Rs )\
CHLIST05( MOV_CH_LAYOUT_MPEG_5_0_B, L, R, Ls, Rs, C )\
CHLIST05( MOV_CH_LAYOUT_MPEG_5_0_C, L, C, R, Ls, Rs )\
CHLIST05( MOV_CH_LAYOUT_MPEG_5_0_D, C, L, R, Ls, Rs )\
CHLIST05( MOV_CH_LAYOUT_DVD_6, L, R, LFE, Ls, Rs )\
CHLIST05( MOV_CH_LAYOUT_DVD_18, L, R, Ls, Rs, LFE )\
CHLIST05( MOV_CH_LAYOUT_DVD_11, L, R, C, LFE, Cs )\
CHLIST05( MOV_CH_LAYOUT_AC3_3_1_1, L, C, R, Cs, LFE )\
CHLIST05( MOV_CH_LAYOUT_DTS_4_1, C, L, R, Cs, LFE )\
CHLIST06( MOV_CH_LAYOUT_HEXAGONAL, L, R, Rls, Rrs, C, Cs )\
CHLIST06( MOV_CH_LAYOUT_DTS_6_0_C, C, Cs, L, R, Rls, Rrs )\
CHLIST06( MOV_CH_LAYOUT_MPEG_5_1_A, L, R, C, LFE, Ls, Rs )\
CHLIST06( MOV_CH_LAYOUT_MPEG_5_1_B, L, R, Ls, Rs, C, LFE )\
CHLIST06( MOV_CH_LAYOUT_MPEG_5_1_C, L, C, R, Ls, Rs, LFE )\
CHLIST06( MOV_CH_LAYOUT_MPEG_5_1_D, C, L, R, Ls, Rs, LFE )\
CHLIST06( MOV_CH_LAYOUT_AUDIOUNIT_6_0, L, R, Ls, Rs, C, Cs )\
CHLIST06( MOV_CH_LAYOUT_AAC_6_0, C, L, R, Ls, Rs, Cs )\
CHLIST06( MOV_CH_LAYOUT_EAC3_6_0_A, L, C, R, Ls, Rs, Cs )\
CHLIST06( MOV_CH_LAYOUT_DTS_6_0_A, Lc, Rc, L, R, Ls, Rs )\
CHLIST06( MOV_CH_LAYOUT_DTS_6_0_B, C, L, R, Rls, Rrs, Ts )\
CHLIST07( MOV_CH_LAYOUT_MPEG_6_1_A, L, R, C, LFE, Ls, Rs, Cs )\
CHLIST07( MOV_CH_LAYOUT_AAC_6_1, C, L, R, Ls, Rs, Cs, LFE )\
CHLIST07( MOV_CH_LAYOUT_EAC3_6_1_A, L, C, R, Ls, Rs, LFE, Cs )\
CHLIST07( MOV_CH_LAYOUT_DTS_6_1_D, C, L, R, Ls, Rs, LFE, Cs )\
CHLIST07( MOV_CH_LAYOUT_AUDIOUNIT_7_0, L, R, Ls, Rs, C, Rls, Rrs )\
CHLIST07( MOV_CH_LAYOUT_AAC_7_0, C, L, R, Ls, Rs, Rls, Rrs )\
CHLIST07( MOV_CH_LAYOUT_EAC3_7_0_A, L, C, R, Ls, Rs, Rls, Rrs )\
CHLIST07( MOV_CH_LAYOUT_AUDIOUNIT_7_0_FRONT, L, R, Ls, Rs, C, Lc, Rc )\
CHLIST07( MOV_CH_LAYOUT_DTS_7_0, Lc, C, Rc, L, R, Ls, Rs )\
CHLIST07( MOV_CH_LAYOUT_EAC3_6_1_B, L, C, R, Ls, Rs, LFE, Ts )\
CHLIST07( MOV_CH_LAYOUT_EAC3_6_1_C, L, C, R, Ls, Rs, LFE, Vhc )\
CHLIST07( MOV_CH_LAYOUT_DTS_6_1_A, Lc, Rc, L, R, Ls, Rs, LFE )\
CHLIST07( MOV_CH_LAYOUT_DTS_6_1_B, C, L, R, Rls, Rrs, Ts, LFE )\
CHLIST07( MOV_CH_LAYOUT_DTS_6_1_C, C, Cs, L, R, Rls, Rrs, LFE )\
CHLIST08( MOV_CH_LAYOUT_OCTAGONAL, L, R, Rls, Rrs, C, Cs, Ls, Rs )\
CHLIST08( MOV_CH_LAYOUT_AAC_OCTAGONAL, C, L, R, Ls, Rs, Rls, Rrs, Cs )\
CHLIST08( MOV_CH_LAYOUT_CUBE, L, R, Rls, Rrs, Vhl, Vhr, Rlt, Rrt )\
CHLIST08( MOV_CH_LAYOUT_MPEG_7_1_A, L, R, C, LFE, Ls, Rs, Lc, Rc )\
CHLIST08( MOV_CH_LAYOUT_MPEG_7_1_B, C, Lc, Rc, L, R, Ls, Rs, LFE )\
CHLIST08( MOV_CH_LAYOUT_EMAGIC_DEFAULT_7_1, L, R, Ls, Rs, C, LFE, Lc, Rc )\
CHLIST08( MOV_CH_LAYOUT_EAC3_7_1_B, L, C, R, Ls, Rs, LFE, Lc, Rc )\
CHLIST08( MOV_CH_LAYOUT_DTS_7_1, Lc, C, Rc, L, R, Ls, Rs, LFE )\
CHLIST08( MOV_CH_LAYOUT_MPEG_7_1_C, L, R, C, LFE, Ls, Rs, Rls, Rrs )\
CHLIST08( MOV_CH_LAYOUT_EAC3_7_1_A, L, C, R, Ls, Rs, LFE, Rls, Rrs )\
CHLIST08( MOV_CH_LAYOUT_SMPTE_DTV, L, R, C, LFE, Ls, Rs, Lt, Rt )\
CHLIST08( MOV_CH_LAYOUT_EAC3_7_1_C, L, C, R, Ls, Rs, LFE, Lsd, Rsd )\
CHLIST08( MOV_CH_LAYOUT_EAC3_7_1_D, L, C, R, Ls, Rs, LFE, Lw, Rw )\
CHLIST08( MOV_CH_LAYOUT_EAC3_7_1_E, L, C, R, Ls, Rs, LFE, Vhl, Vhr )\
CHLIST08( MOV_CH_LAYOUT_EAC3_7_1_F, L, C, R, Ls, Rs, LFE, Cs, Ts )\
CHLIST08( MOV_CH_LAYOUT_EAC3_7_1_G, L, C, R, Ls, Rs, LFE, Cs, Vhc )\
CHLIST08( MOV_CH_LAYOUT_EAC3_7_1_H, L, C, R, Ls, Rs, LFE, Ts, Vhc )\
CHLIST08( MOV_CH_LAYOUT_DTS_8_0_A, Lc, Rc, L, R, Ls, Rs, Rls, Rrs )\
CHLIST08( MOV_CH_LAYOUT_DTS_8_0_B, Lc, C, Rc, L, R, Ls, Cs, Rs )\
CHLIST09( MOV_CH_LAYOUT_DTS_8_1_A, Lc, Rc, L, R, Ls, Rs, Rls, Rrs, LFE )\
CHLIST09( MOV_CH_LAYOUT_DTS_8_1_B, Lc, C, Rc, L, R, Ls, Cs, Rs, LFE )\
CHLIST16( MOV_CH_LAYOUT_TMH_10_2_STD, L, R, C, Vhc, Lsd, Rsd, Ls, Rs, Vhl, Vhr, Lw, Rw, Csd, Cs, LFE1, LFE2 )\
CHLIST21( MOV_CH_LAYOUT_TMH_10_2_FULL, L, R, C, Vhc, Lsd, Rsd, Ls, Rs, Vhl, Vhr, Lw, Rw, Csd, Cs, LFE1, LFE2, Lc, Rc, HI, VI, Haptic )\
#define CHLIST(_tag, _cnt, ...) static_assert((_tag & 0xffff) == _cnt, "Channel count of " #_tag " is not " #_cnt);
MOV_CH_LAYOUT_MAP
#undef CHLIST
#define CHLIST(_tag, _cnt, ...) TAG(_tag, _cnt), __VA_ARGS__,
static const struct MovChannelLayoutMap mov_ch_layout_map[] = {
MOV_CH_LAYOUT_MAP
{ {0} },
};
#undef ID
#undef TAG
#define ID(_0) {.id = iso_##_0}
#define TAG(_tag, _cnt) {.tag = (_tag << 16) | _cnt}
/* ISO/IEC 23001-8 */
static const struct MovChannelLayoutMap iso_ch_layout_map[] = {
CHLIST01( 1, C )
CHLIST02( 2, L, R )
CHLIST03( 3, C, L, R )
CHLIST04( 4, C, L, R, Cs )
CHLIST05( 5, C, L, R, Ls, Rs )
CHLIST06( 6, C, L, R, Ls, Rs, LFE )
CHLIST08( 7, C, Lc, Rc, L, R, Ls, Rs, LFE )
CHLIST03( 9, L, R, Cs )
CHLIST04( 10, L, R, Ls, Rs )
CHLIST07( 11, C, L, R, Ls, Rs, Cs, LFE )
CHLIST08( 12, C, L, R, Ls, Rs, Lsr, Rsr, LFE )
CHLIST24( 13, C, Lc, Rc, L, R, Lss, Rss, Lsr, Rsr, Cs, LFE, LFE2, Cv, Lv, Rv, Lvss, Rvss, Ts, Lvr, Rvr, Cvr, Cb, Lb, Rb)
CHLIST08( 14, C, L, R, Ls, Rs, LFE, Lv, Rv)
{ {0} },
};
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 },
};
static const struct MovChannelLayoutMap* find_layout_map(uint32_t tag, const struct MovChannelLayoutMap *map)
{
for (int i = 0; map[i].tag & 0xffff; i += 1 + (map[i].tag & 0xffff))
if (map[i].tag == tag)
return &map[i + 1];
return NULL;
}
/**
* Get the channel layout for the specified non-special channel layout tag if
* known.
*
* @param[in,out] ch_layout channel layout
* @param[in] tag channel layout tag
* @return <0 on error
*/
static int mov_get_channel_layout(AVChannelLayout *ch_layout, uint32_t tag, uint64_t omitted_channel_map, const struct MovChannelLayoutMap *map)
{
const struct MovChannelLayoutMap *layout_map;
/* find the channel layout for the specified layout tag */
layout_map = find_layout_map(tag, map);
if (layout_map) {
int ret;
int map_layout_nb_channels = tag & 0xFFFF;
int nb_channels = ch_layout->nb_channels;
/* Omitted channel bits must not exceed number of channels in map */
if (omitted_channel_map >> map_layout_nb_channels)
return AVERROR_INVALIDDATA;
av_channel_layout_uninit(ch_layout);
ret = av_channel_layout_custom_init(ch_layout, nb_channels);
if (ret < 0)
return ret;
for (int i = 0, idx = 0; i < map_layout_nb_channels && idx < nb_channels; i++, omitted_channel_map >>= 1) {
if (!(omitted_channel_map & 1)) {
enum AVChannel id = layout_map[i].id;
ch_layout->u.map[idx++].id = (id != AV_CHAN_NONE ? id : AV_CHAN_UNKNOWN);
}
}
return av_channel_layout_retype(ch_layout, 0, AV_CHANNEL_LAYOUT_RETYPE_FLAG_CANONICAL);
}
return 0;
}
static enum AVChannel mov_get_channel_id(uint32_t label)
{
if (label == 0)
return AV_CHAN_UNUSED;
if (label <= 18)
return (label - 1);
if (label == 35)
return AV_CHAN_WIDE_LEFT;
if (label == 36)
return AV_CHAN_WIDE_RIGHT;
if (label == 37)
return AV_CHAN_LOW_FREQUENCY_2;
if (label == 38)
return AV_CHAN_STEREO_LEFT;
if (label == 39)
return AV_CHAN_STEREO_RIGHT;
return AV_CHAN_UNKNOWN;
}
static uint32_t mov_get_channel_label(enum AVChannel channel)
{
if (channel < 0)
return 0;
if (channel <= AV_CHAN_TOP_BACK_RIGHT)
return channel + 1;
if (channel == AV_CHAN_WIDE_LEFT)
return 35;
if (channel == AV_CHAN_WIDE_RIGHT)
return 36;
if (channel == AV_CHAN_LOW_FREQUENCY_2)
return 37;
if (channel == AV_CHAN_STEREO_LEFT)
return 38;
if (channel == AV_CHAN_STEREO_RIGHT)
return 39;
return 0;
}
static int is_layout_valid_for_tag(const AVChannelLayout *ch_layout, uint32_t tag, const struct MovChannelLayoutMap *map)
{
const struct MovChannelLayoutMap *layout_map;
int channels = ch_layout->nb_channels;
/* get the layout map based on the channel count */
if ((tag & 0xFFFF) != channels)
return 0;
layout_map = find_layout_map(tag, map);
if (layout_map) {
int i;
for (i = 0; i < channels; i++) {
if (av_channel_layout_channel_from_index(ch_layout, i) != layout_map[i].id)
break;
}
if (i == channels)
return 1;
}
return 0;
}
int ff_mov_get_channel_layout_tag(const AVCodecParameters *par,
uint32_t *layout,
uint32_t *bitmap,
uint32_t **pchannel_desc)
{
int i;
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 == par->codec_id)
break;
}
if (mov_codec_ch_layouts[i].codec_id != AV_CODEC_ID_NONE)
layouts = mov_codec_ch_layouts[i].layouts;
if (layouts) {
/* find the layout tag for the specified channel layout */
for (i = 0; layouts[i] != 0; i++)
if (is_layout_valid_for_tag(&par->ch_layout, layouts[i], mov_ch_layout_map))
break;
tag = layouts[i];
}
*layout = tag;
*bitmap = 0;
*pchannel_desc = NULL;
/* if no tag was found, use channel bitmap or description as a backup if possible */
if (tag == 0) {
uint32_t *channel_desc;
if (par->ch_layout.order == AV_CHANNEL_ORDER_NATIVE &&
par->ch_layout.u.mask < 0x40000) {
*layout = MOV_CH_LAYOUT_USE_BITMAP;
*bitmap = (uint32_t)par->ch_layout.u.mask;
return 0;
} else if (par->ch_layout.order == AV_CHANNEL_ORDER_UNSPEC)
return AVERROR(ENOSYS);
channel_desc = av_malloc_array(par->ch_layout.nb_channels, sizeof(*channel_desc));
if (!channel_desc)
return AVERROR(ENOMEM);
for (i = 0; i < par->ch_layout.nb_channels; i++) {
channel_desc[i] =
mov_get_channel_label(av_channel_layout_channel_from_index(&par->ch_layout, i));
if (channel_desc[i] == 0) {
av_free(channel_desc);
return AVERROR(ENOSYS);
}
}
*pchannel_desc = channel_desc;
}
return 0;
}
int ff_mov_read_chan(AVFormatContext *s, AVIOContext *pb, AVStream *st,
int64_t size)
{
uint32_t layout_tag, bitmap, num_descr;
int ret;
AVChannelLayout *ch_layout = &st->codecpar->ch_layout;
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_DEBUG, "chan: layout=%"PRIu32" "
"bitmap=%"PRIu32" num_descr=%"PRIu32"\n",
layout_tag, bitmap, num_descr);
if (size < 12ULL + num_descr * 20ULL)
return 0;
if (layout_tag == MOV_CH_LAYOUT_USE_DESCRIPTIONS) {
int nb_channels = ch_layout->nb_channels;
if (!num_descr || num_descr < nb_channels) {
av_log(s, AV_LOG_ERROR, "got %"PRIu32" channel descriptions when at least %d were needed\n",
num_descr, nb_channels);
return AVERROR_INVALIDDATA;
}
if (num_descr > nb_channels) {
int strict = s->strict_std_compliance >= FF_COMPLIANCE_STRICT;
av_log(s, strict ? AV_LOG_ERROR : AV_LOG_WARNING,
"got %"PRIu32" channel descriptions when number of channels is %d\n",
num_descr, nb_channels);
if (strict)
return AVERROR_INVALIDDATA;
av_log(s, AV_LOG_WARNING, "capping channel descriptions to the number of channels\n");
num_descr = nb_channels;
}
av_channel_layout_uninit(ch_layout);
ret = av_channel_layout_custom_init(ch_layout, nb_channels);
if (ret < 0)
goto out;
for (int 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;
ch_layout->u.map[i].id = mov_get_channel_id(label);
}
ret = av_channel_layout_retype(ch_layout, 0, AV_CHANNEL_LAYOUT_RETYPE_FLAG_CANONICAL);
if (ret < 0)
goto out;
} else if (layout_tag == MOV_CH_LAYOUT_USE_BITMAP) {
if (!ch_layout->nb_channels || av_popcount(bitmap) == ch_layout->nb_channels) {
if (bitmap < 0x40000) {
av_channel_layout_uninit(ch_layout);
av_channel_layout_from_mask(ch_layout, bitmap);
}
} else {
av_log(s, AV_LOG_WARNING, "ignoring channel layout bitmap with %d channels because number of channels is %d\n",
av_popcount64(bitmap), ch_layout->nb_channels);
}
} else if (layout_tag & 0xFFFF) {
int nb_channels = layout_tag & 0xFFFF;
if (!ch_layout->nb_channels)
ch_layout->nb_channels = nb_channels;
if (nb_channels == ch_layout->nb_channels) {
ret = mov_get_channel_layout(ch_layout, layout_tag, 0, mov_ch_layout_map);
if (ret < 0)
return ret;
} else {
av_log(s, AV_LOG_WARNING, "ignoring layout tag with %d channels because number of channels is %d\n",
nb_channels, ch_layout->nb_channels);
}
}
ret = 0;
out:
avio_skip(pb, size - 12);
return ret;
}
/* ISO/IEC 23001-8, table 8 */
static const enum AVChannel iso_channel_position[] = {
[0] = AV_CHAN_FRONT_LEFT, // left front
[1] = AV_CHAN_FRONT_RIGHT, // right front
[2] = AV_CHAN_FRONT_CENTER, // centre front
[3] = AV_CHAN_LOW_FREQUENCY, // low frequency enhancement
[4] = AV_CHAN_SIDE_LEFT, // left surround
[5] = AV_CHAN_SIDE_RIGHT, // right surround
[6] = AV_CHAN_FRONT_LEFT_OF_CENTER, // left front centre
[7] = AV_CHAN_FRONT_RIGHT_OF_CENTER, // right front centre
[8] = AV_CHAN_BACK_LEFT, // rear surround left
[9] = AV_CHAN_BACK_RIGHT, // rear surround right
[10] = AV_CHAN_BACK_CENTER, // rear centre
[11] = AV_CHAN_SURROUND_DIRECT_LEFT, // left surround direct
[12] = AV_CHAN_SURROUND_DIRECT_RIGHT, // right surround direct
[13] = AV_CHAN_SIDE_SURROUND_LEFT, // left side surround
[14] = AV_CHAN_SIDE_SURROUND_RIGHT, // right side surround
[15] = AV_CHAN_WIDE_LEFT, // left wide front
[16] = AV_CHAN_WIDE_RIGHT, // right wide front
[17] = AV_CHAN_TOP_FRONT_LEFT, // left front vertical height
[18] = AV_CHAN_TOP_FRONT_RIGHT, // right front vertical height
[19] = AV_CHAN_TOP_FRONT_CENTER, // centre front vertical height
[20] = AV_CHAN_TOP_BACK_LEFT, // left surround vertical height rear
[21] = AV_CHAN_TOP_BACK_RIGHT, // right surround vertical height rear
[22] = AV_CHAN_TOP_BACK_CENTER, // centre vertical height rear
[23] = AV_CHAN_TOP_SIDE_LEFT, // left vertical height side surround
[24] = AV_CHAN_TOP_SIDE_RIGHT, // right vertical height side surround
[25] = AV_CHAN_TOP_CENTER, // top centre surround
[26] = AV_CHAN_LOW_FREQUENCY_2, // low frequency enhancement 2
[27] = AV_CHAN_BOTTOM_FRONT_LEFT, // left front vertical bottom
[28] = AV_CHAN_BOTTOM_FRONT_RIGHT, // right front vertical bottom
[29] = AV_CHAN_BOTTOM_FRONT_CENTER, // centre front vertical bottom
[30] = AV_CHAN_TOP_SURROUND_LEFT, // left vertical height surround
[31] = AV_CHAN_TOP_SURROUND_RIGHT, // right vertical height surround
[32] = AV_CHAN_NONE, // reserved
[33] = AV_CHAN_NONE, // reserved
[34] = AV_CHAN_NONE, // reserved
[35] = AV_CHAN_NONE, // reserved
[36] = AV_CHAN_NONE, // low frequency enhancement 3
[37] = AV_CHAN_NONE, // left edge of screen
[38] = AV_CHAN_NONE, // right edge of screen
[39] = AV_CHAN_NONE, // half-way between centre of screen and left edge of screen
[40] = AV_CHAN_NONE, // half-way between centre of screen and right edge of screen
[41] = AV_CHAN_NONE, // left back surround
[42] = AV_CHAN_NONE, // right back surround
// 43 - 125: reserved
// 126: explicit position
// 127: unknown /undefined
};
int ff_mov_get_channel_config_from_layout(const AVChannelLayout *layout, int *config)
{
// Set default value which means any setup in 23001-8
*config = 0;
for (int i = 0; iso_ch_layout_map[i].tag & 0xffff; i += 1 + (iso_ch_layout_map[i].tag & 0xffff)) {
if (is_layout_valid_for_tag(layout, iso_ch_layout_map[i].tag, &iso_ch_layout_map[i])) {
*config = iso_ch_layout_map[i].tag >> 16;
break;
}
}
return 0;
}
int ff_mov_get_channel_layout_from_config(int config, AVChannelLayout *layout, uint64_t omitted_channel_map)
{
if (config > 0) {
uint32_t layout_tag;
int nb_omitted_channels = av_popcount64(omitted_channel_map);
if (layout->nb_channels <= 0 || layout->nb_channels > UINT16_MAX - nb_omitted_channels)
return AVERROR_INVALIDDATA;
layout_tag = (config << 16) | (layout->nb_channels + nb_omitted_channels);
return mov_get_channel_layout(layout, layout_tag, omitted_channel_map, iso_ch_layout_map);
}
return 1;
}
int ff_mov_get_channel_positions_from_layout(const AVChannelLayout *layout,
uint8_t *position, int position_num)
{
enum AVChannel channel;
if (position_num < layout->nb_channels)
return AVERROR(EINVAL);
for (int i = 0; i < layout->nb_channels; i++) {
position[i] = 127;
channel = av_channel_layout_channel_from_index(layout, i);
if (channel == AV_CHAN_NONE)
return AVERROR(EINVAL);
for (int j = 0; j < FF_ARRAY_ELEMS(iso_channel_position); j++) {
if (iso_channel_position[j] == channel) {
position[i] = j;
break;
}
}
if (position[i] == 127)
return AVERROR(EINVAL);
}
return 0;
}
int ff_mov_read_chnl(AVFormatContext *s, AVIOContext *pb, AVStream *st)
{
int stream_structure = avio_r8(pb);
int ret;
// stream carries channels
if (stream_structure & 1) {
int layout = avio_r8(pb);
av_log(s, AV_LOG_TRACE, "'chnl' layout %d\n", layout);
if (!layout) {
AVChannelLayout *ch_layout = &st->codecpar->ch_layout;
int nb_channels = ch_layout->nb_channels;
av_channel_layout_uninit(ch_layout);
ret = av_channel_layout_custom_init(ch_layout, nb_channels);
if (ret < 0)
return ret;
for (int i = 0; i < nb_channels; i++) {
int speaker_pos = avio_r8(pb);
enum AVChannel channel;
if (speaker_pos == 126) // explicit position
avio_skip(pb, 3); // azimuth, elevation
if (speaker_pos >= FF_ARRAY_ELEMS(iso_channel_position))
channel = AV_CHAN_NONE;
else
channel = iso_channel_position[speaker_pos];
if (channel == AV_CHAN_NONE) {
av_log(s, AV_LOG_WARNING, "speaker position %d is not implemented\n", speaker_pos);
channel = AV_CHAN_UNKNOWN;
}
ch_layout->u.map[i].id = channel;
}
ret = av_channel_layout_retype(ch_layout, 0, AV_CHANNEL_LAYOUT_RETYPE_FLAG_CANONICAL);
if (ret < 0)
return ret;
} else {
uint64_t omitted_channel_map = avio_rb64(pb);
ret = ff_mov_get_channel_layout_from_config(layout, &st->codecpar->ch_layout, omitted_channel_map);
if (ret < 0)
return ret;
}
}
// stream carries objects
if (stream_structure & 2) {
int obj_count = avio_r8(pb);
av_log(s, AV_LOG_TRACE, "'chnl' with object_count %d\n", obj_count);
}
return 0;
}
|
