-
Notifications
You must be signed in to change notification settings - Fork 278
/
quicktimevideo.cpp
1610 lines (1427 loc) · 58.1 KB
/
quicktimevideo.cpp
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
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
// ***************************************************************** -*- C++ -*-
/*
* Copyright (C) 2004-2021 Exiv2 authors
* This program is part of the Exiv2 distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, 5th Floor, Boston, MA 02110-1301 USA.
*/
// *****************************************************************************
// included header files
#include "config.h"
#include "basicio.hpp"
#include "enforce.hpp"
#include "error.hpp"
#include "futils.hpp"
#include "quicktimevideo.hpp"
#include "tags.hpp"
#include "tags_int.hpp"
// + standard includes
#include <array>
#include <cmath>
#include <iostream>
#include <string>
// *****************************************************************************
// class member definitions
namespace Exiv2 {
namespace Internal {
extern const TagVocabulary qTimeFileType[] = {
{"3g2a", "3GPP2 Media (.3G2) compliant with 3GPP2 C.S0050-0 V1.0"},
{"3g2b", "3GPP2 Media (.3G2) compliant with 3GPP2 C.S0050-A V1.0.0"},
{"3g2c", "3GPP2 Media (.3G2) compliant with 3GPP2 C.S0050-B v1.0"},
{"3ge6", "3GPP (.3GP) Release 6 MBMS Extended Presentations"},
{"3ge7", "3GPP (.3GP) Release 7 MBMS Extended Presentations"},
{"3gg6", "3GPP Release 6 General Profile"},
{"3gp1", "3GPP Media (.3GP) Release 1 (probably non-existent)"},
{"3gp2", "3GPP Media (.3GP) Release 2 (probably non-existent)"},
{"3gp3", "3GPP Media (.3GP) Release 3 (probably non-existent)"},
{"3gp4", "3GPP Media (.3GP) Release 4"},
{"3gp5", "3GPP Media (.3GP) Release 5"},
{"3gp6", "3GPP Media (.3GP) Release 6 Streaming Servers"},
{"3gs7", "3GPP Media (.3GP) Release 7 Streaming Servers"},
{"CAEP", "Canon Digital Camera"},
{"CDes", "Convergent Design"},
{"F4A ", "Audio for Adobe Flash Player 9+ (.F4A)"},
{"F4B ", "Audio Book for Adobe Flash Player 9+ (.F4B)"},
{"F4P ", "Protected Video for Adobe Flash Player 9+ (.F4P)"},
{"F4V ", "Video for Adobe Flash Player 9+ (.F4V)"},
{"JP2 ", "JPEG 2000 Image (.JP2) [ISO 15444-1 ?]"},
{"JP20", "Unknown, from GPAC samples (prob non-existent)"},
{"KDDI", "3GPP2 EZmovie for KDDI 3G cellphones"},
{"M4A ", "Apple iTunes AAC-LC (.M4A) Audio"},
{"M4B ", "Apple iTunes AAC-LC (.M4B) Audio Book"},
{"M4P ", "Apple iTunes AAC-LC (.M4P) AES Protected Audio"},
{"M4V ", "Apple iTunes Video (.M4V) Video"},
{"M4VH", "Apple TV (.M4V)"},
{"M4VP", "Apple iPhone (.M4V)"},
{"MPPI", "Photo Player, MAF [ISO/IEC 23000-3]"},
{"MSNV", "MPEG-4 (.MP4) for SonyPSP"},
{"NDAS", "MP4 v2 [ISO 14496-14] Nero Digital AAC Audio"},
{"NDSC", "MPEG-4 (.MP4) Nero Cinema Profile"},
{"NDSH", "MPEG-4 (.MP4) Nero HDTV Profile"},
{"NDSM", "MPEG-4 (.MP4) Nero Mobile Profile"},
{"NDSP", "MPEG-4 (.MP4) Nero Portable Profile"},
{"NDSS", "MPEG-4 (.MP4) Nero Standard Profile"},
{"NDXC", "H.264/MPEG-4 AVC (.MP4) Nero Cinema Profile"},
{"NDXH", "H.264/MPEG-4 AVC (.MP4) Nero HDTV Profile"},
{"NDXM", "H.264/MPEG-4 AVC (.MP4) Nero Mobile Profile"},
{"NDXP", "H.264/MPEG-4 AVC (.MP4) Nero Portable Profile"},
{"NDXS", "H.264/MPEG-4 AVC (.MP4) Nero Standard Profile"},
{"NIKO", "Nikon"},
{"ROSS", "Ross Video"},
{"avc1", "MP4 Base w/ AVC ext [ISO 14496-12:2005]"},
{"caqv", "Casio Digital Camera"},
{"da0a", "DMB MAF w/ MPEG Layer II aud, MOT slides, DLS, JPG/PNG/MNG images"},
{"da0b", "DMB MAF, extending DA0A, with 3GPP timed text, DID, TVA, REL, IPMP"},
{"da1a", "DMB MAF audio with ER-BSAC audio, JPG/PNG/MNG images"},
{"da1b", "DMB MAF, extending da1a, with 3GPP timed text, DID, TVA, REL, IPMP"},
{"da2a", "DMB MAF aud w/ HE-AAC v2 aud, MOT slides, DLS, JPG/PNG/MNG images"},
{"da2b", "DMB MAF, extending da2a, with 3GPP timed text, DID, TVA, REL, IPMP"},
{"da3a", "DMB MAF aud with HE-AAC aud, JPG/PNG/MNG images"},
{"da3b", "DMB MAF, extending da3a w/ BIFS, 3GPP timed text, DID, TVA, REL, IPMP"},
{"dmb1", "DMB MAF supporting all the components defined in the specification"},
{"dmpf", "Digital Media Project"},
{"drc1", "Dirac (wavelet compression), encapsulated in ISO base media (MP4)"},
{"dv1a", "DMB MAF vid w/ AVC vid, ER-BSAC aud, BIFS, JPG/PNG/MNG images, TS"},
{"dv1b", "DMB MAF, extending dv1a, with 3GPP timed text, DID, TVA, REL, IPMP"},
{"dv2a", "DMB MAF vid w/ AVC vid, HE-AAC v2 aud, BIFS, JPG/PNG/MNG images, TS"},
{"dv2b", "DMB MAF, extending dv2a, with 3GPP timed text, DID, TVA, REL, IPMP"},
{"dv3a", "DMB MAF vid w/ AVC vid, HE-AAC aud, BIFS, JPG/PNG/MNG images, TS"},
{"dv3b", "DMB MAF, extending dv3a, with 3GPP timed text, DID, TVA, REL, IPMP"},
{"dvr1", "DVB (.DVB) over RTP"},
{"dvt1", "DVB (.DVB) over MPEG-2 Transport Stream"},
{"isc2", "ISMACryp 2.0 Encrypted File"},
{"iso2", "MP4 Base Media v2 [ISO 14496-12:2005]"},
{"isom", "MP4 Base Media v1 [IS0 14496-12:2003]"},
{"jpm ", "JPEG 2000 Compound Image (.JPM) [ISO 15444-6]"},
{"jpx ", "JPEG 2000 with extensions (.JPX) [ISO 15444-2]"},
{"mj2s", "Motion JPEG 2000 [ISO 15444-3] Simple Profile"},
{"mjp2", "Motion JPEG 2000 [ISO 15444-3] General Profile"},
{"mmp4", "MPEG-4/3GPP Mobile Profile (.MP4/3GP) (for NTT)"},
{"mp21", "MPEG-21 [ISO/IEC 21000-9]"},
{"mp41", "MP4 v1 [ISO 14496-1:ch13]"},
{"mp42", "MP4 v2 [ISO 14496-14]"},
{"mp71", "MP4 w/ MPEG-7 Metadata [per ISO 14496-12]"},
{"mqt ", "Sony / Mobile QuickTime (.MQV) US Patent 7,477,830 (Sony Corp)"},
{"niko", "Nikon"},
{"odcf", "OMA DCF DRM Format 2.0 (OMA-TS-DRM-DCF-V2_0-20060303-A)"},
{"opf2", "OMA PDCF DRM Format 2.1 (OMA-TS-DRM-DCF-V2_1-20070724-C)"},
{"opx2", "OMA PDCF DRM + XBS extensions (OMA-TS-DRM_XBS-V1_0-20070529-C)"},
{"pana", "Panasonic Digital Camera"},
{"qt ", "Apple QuickTime (.MOV/QT)"},
{"sdv ", "SD Memory Card Video"},
{"ssc1", "Samsung stereoscopic, single stream"},
{"ssc2", "Samsung stereoscopic, dual stream"}};
extern const TagVocabulary handlerClassTags[] = {{"dhlr", "Data Handler"}, {"mhlr", "Media Handler"}};
extern const TagVocabulary handlerTypeTags[] = {{"alis", "Alias Data"},
{"crsm", "Clock Reference"},
{"hint", "Hint Track"},
{"ipsm", "IPMP"},
{"m7sm", "MPEG-7 Stream"},
{"mdir", "Metadata"},
{"mdta", "Metadata Tags"},
{"mjsm", "MPEG-J"},
{"ocsm", "Object Content"},
{"odsm", "Object Descriptor"},
{"sdsm", "Scene Description"},
{"soun", "Audio Track"},
{"text", "Text"},
{"tmcd", "Time Code"},
{"url ", "URL"},
{"vide", "Video Track"}};
extern const TagVocabulary vendorIDTags[] = {{"FFMP", "FFmpeg"},
{"appl", "Apple"},
{"olym", "Olympus"},
{"GIC ", "General Imaging Co."},
{"fe20", "Olympus (fe20)"},
{"pana", "Panasonic"},
{"KMPI", "Konica-Minolta"},
{"kdak", "Kodak"},
{"pent", "Pentax"},
{"NIKO", "Nikon"},
{"leic", "Leica"},
{"pr01", "Olympus (pr01)"},
{"SMI ", "Sorenson Media Inc."},
{"mino", "Minolta"},
{"sany", "Sanyo"},
{"ZORA", "Zoran Corporation"},
{"niko", "Nikon"}};
extern const TagVocabulary cameraByteOrderTags[] = {{"II", "Little-endian (Intel, II)"},
{"MM", "Big-endian (Motorola, MM)"}};
extern const TagDetails graphicsModetags[] = {{0x0, "srcCopy"}, {0x1, "srcOr"},
{0x2, "srcXor"}, {0x3, "srcBic"},
{0x4, "notSrcCopy"}, {0x5, "notSrcOr"},
{0x6, "notSrcXor"}, {0x7, "notSrcBic"},
{0x8, "patCopy"}, {0x9, "patOr"},
{0xa, "patXor"}, {0xb, "patBic"},
{0xc, "notPatCopy"}, {0xd, "notPatOr"},
{0xe, "notPatXor"}, {0xf, "notPatBic"},
{0x20, "blend"}, {0x21, "addPin"},
{0x22, "addOver"}, {0x23, "subPin"},
{0x24, "transparent"}, {0x25, "addMax"},
{0x26, "subOver"}, {0x27, "addMin"},
{0x31, "grayishTextOr"}, {0x32, "hilite"},
{0x40, "ditherCopy"}, {0x100, "Alpha"},
{0x101, "White Alpha"}, {0x102, "Pre-multiplied Black Alpha"},
{0x110, "Component Alpha"}};
extern const TagVocabulary userDatatags[] = {
{"AllF", "PlayAllFrames"},
{"CNCV", "CompressorVersion"},
{"CNFV", "FirmwareVersion"},
{"CNMN", "Model"},
{"CNTH", "CanonCNTH"},
{"DcMD", "DcMD"},
{"FFMV", "FujiFilmFFMV"},
{"INFO", "SamsungINFO"},
{"LOOP", "LoopStyle"},
{"MMA0", "MinoltaMMA0"},
{"MMA1", "MinoltaMMA1"},
{"MVTG", "FujiFilmMVTG"},
{"NCDT", "NikonNCDT"},
{"PANA", "PanasonicPANA"},
{"PENT", "PentaxPENT"},
{"PXMN", "MakerNotePentax5b"},
{"PXTH", "PentaxPreview"},
{"QVMI", "CasioQVMI"},
{"SDLN", "PlayMode"},
{"SelO", "PlaySelection"},
{"TAGS", "KodakTags/KonicaMinoltaTags/MinoltaTags/NikonTags/OlympusTags/PentaxTags/SamsungTags/SanyoMOV/SanyoMP4"},
{"WLOC", "WindowLocation"},
{"XMP_", "XMP"},
{"Xtra", "Xtra"},
{"hinf", "HintTrackInfo"},
{"hinv", "HintVersion"},
{"hnti", "Hint"},
{"meta", "Meta"},
{"name", "Name"},
{"ptv ", "PrintToVideo"},
{"scrn", "OlympusPreview"},
{"thmb", "MakerNotePentax5a/OlympusThumbnail"},
};
extern const TagVocabulary userDataReferencetags[] = {
{"CNCV", "Xmp.video.CompressorVersion"},
{"CNFV", "Xmp.video.FirmwareVersion"},
{"CNMN", "Xmp.video.Model"},
{"NCHD", "Xmp.video.MakerNoteType"},
{"WLOC", "Xmp.video.WindowLocation"},
{"SDLN", "Xmp.video.PlayMode"},
{"FFMV", "Xmp.video.StreamName"},
{"SelO", "Xmp.video.PlaySelection"},
{"name", "Xmp.video.Name"},
{"vndr", "Xmp.video.Vendor"},
{" ART", "Xmp.video.Artist"},
{" alb", "Xmp.video.Album"},
{" arg", "Xmp.video.Arranger"},
{" ark", "Xmp.video.ArrangerKeywords"},
{" cmt", "Xmp.video.Comment"},
{" cok", "Xmp.video.ComposerKeywords"},
{" com", "Xmp.video.Composer"},
{" cpy", "Xmp.video.Copyright"},
{" day", "Xmp.video.CreateDate"},
{" dir", "Xmp.video.Director"},
{" ed1", "Xmp.video.Edit1"},
{" ed2", "Xmp.video.Edit2"},
{" ed3", "Xmp.video.Edit3"},
{" ed4", "Xmp.video.Edit4"},
{" ed5", "Xmp.video.Edit5"},
{" ed6", "Xmp.video.Edit6"},
{" ed7", "Xmp.video.Edit7"},
{" ed8", "Xmp.video.Edit8"},
{" ed9", "Xmp.video.Edit9"},
{" enc", "Xmp.video.Encoder"},
{" fmt", "Xmp.video.Format"},
{" gen", "Xmp.video.Genre"},
{" grp", "Xmp.video.Grouping"},
{" inf", "Xmp.video.Information"},
{" isr", "Xmp.video.ISRCCode"},
{" lab", "Xmp.video.RecordLabelName"},
{" lal", "Xmp.video.RecordLabelURL"},
{" lyr", "Xmp.video.Lyrics"},
{" mak", "Xmp.video.Make"},
{" mal", "Xmp.video.MakerURL"},
{" mod", "Xmp.video.Model"},
{" nam", "Xmp.video.Title"},
{" pdk", "Xmp.video.ProducerKeywords"},
{" phg", "Xmp.video.RecordingCopyright"},
{" prd", "Xmp.video.Producer"},
{" prf", "Xmp.video.Performers"},
{" prk", "Xmp.video.PerformerKeywords"},
{" prl", "Xmp.video.PerformerURL"},
{" req", "Xmp.video.Requirements"},
{" snk", "Xmp.video.SubtitleKeywords"},
{" snm", "Xmp.video.Subtitle"},
{" src", "Xmp.video.SourceCredits"},
{" swf", "Xmp.video.SongWriter"},
{" swk", "Xmp.video.SongWriterKeywords"},
{" swr", "Xmp.video.SoftwareVersion"},
{" too", "Xmp.video.Encoder"},
{" trk", "Xmp.video.Track"},
{" wrt", "Xmp.video.Composer"},
{" xyz", "Xmp.video.GPSCoordinates"},
{"CMbo", "Xmp.video.CameraByteOrder"},
{"Cmbo", "Xmp.video.CameraByteOrder"},
};
extern const TagDetails NikonNCTGTags[] = {
{0x0001, "Xmp.video.Make"},
{0x0002, "Xmp.video.Model"},
{0x0003, "Xmp.video.Software"},
{0x0011, "Xmp.video.CreationDate"},
{0x0012, "Xmp.video.DateTimeOriginal"},
{0x0013, "Xmp.video.FrameCount"},
{0x0016, "Xmp.video.FrameRate"},
{0x0022, "Xmp.video.FrameWidth"},
{0x0023, "Xmp.video.FrameHeight"},
{0x0032, "Xmp.audio.channelType"},
{0x0033, "Xmp.audio.BitsPerSample"},
{0x0034, "Xmp.audio.sampleRate"},
{0x1108822, "Xmp.video.ExposureProgram"},
{0x1109204, "Xmp.video.ExposureCompensation"},
{0x1109207, "Xmp.video.MeteringMode"},
{0x110a434, "Xmp.video.LensModel"},
{0x1200000, "Xmp.video.GPSVersionID"},
{0x1200001, "Xmp.video.GPSLatitudeRef"},
{0x1200002, "Xmp.video.GPSLatitude"},
{0x1200003, "Xmp.video.GPSLongitudeRef"},
{0x1200004, "Xmp.video.GPSLongitude"},
{0x1200005, "Xmp.video.GPSAltitudeRef"},
{0x1200006, "Xmp.video.GPSAltitude"},
{0x1200007, "Xmp.video.GPSTimeStamp"},
{0x1200008, "Xmp.video.GPSSatellites"},
{0x1200010, "Xmp.video.GPSImgDirectionRef"},
{0x1200011, "Xmp.video.GPSImgDirection"},
{0x1200012, "Xmp.video.GPSMapDatum"},
{0x120001d, "Xmp.video.GPSDateStamp"},
{0x2000001, "Xmp.video.MakerNoteVersion"},
{0x2000005, "Xmp.video.WhiteBalance"},
{0x200000b, "Xmp.video.WhiteBalanceFineTune"},
{0x200001e, "Xmp.video.ColorSpace"},
{0x2000023, "Xmp.video.PictureControlData"},
{0x2000024, "Xmp.video.WorldTime"},
{0x200002c, "Xmp.video.UnknownInfo"},
{0x2000032, "Xmp.video.UnknownInfo2"},
{0x2000039, "Xmp.video.LocationInfo"},
{0x2000083, "Xmp.video.LensType"},
{0x2000084, "Xmp.video.LensModel"},
{0x20000ab, "Xmp.video.VariProgram"},
};
extern const TagDetails NikonColorSpace[] = {
{1, "sRGB"},
{2, "Adobe RGB"},
};
extern const TagVocabulary NikonGPS_Latitude_Longitude_ImgDirection_Reference[] = {
{"N", "North"}, {"S", "South"}, {"E", "East"}, {"W", "West"}, {"M", "Magnetic North"}, {"T", "True North"},
};
extern const TagDetails NikonGPSAltitudeRef[] = {
{0, "Above Sea Level"},
{1, "Below Sea Level"},
};
extern const TagDetails NikonExposureProgram[] = {
{0, "Not Defined"},
{1, "Manual"},
{2, "Program AE"},
{3, "Aperture-priority AE"},
{4, "Shutter speed priority AE"},
{5, "Creative (Slow speed)"},
{6, "Action (High speed)"},
{7, "Portrait"},
{8, "Landscape"},
};
extern const TagDetails NikonMeteringMode[] = {
{0, "Unknown"}, {1, "Average"}, {2, "Center-weighted average"},
{3, "Spot"}, {4, "Multi-spot"}, {5, "Multi-segment"},
{6, "Partial"}, {255, "Other"},
};
extern const TagDetails PictureControlAdjust[] = {
{0, "Default Settings"},
{1, "Quick Adjust"},
{2, "Full Control"},
};
//! Contrast and Sharpness
extern const TagDetails NormalSoftHard[] = {{0, "Normal"}, {1, "Soft"}, {2, "Hard"}};
//! Saturation
extern const TagDetails Saturation[] = {{0, "Normal"}, {1, "Low"}, {2, "High"}};
//! YesNo, used for DaylightSavings
extern const TagDetails YesNo[] = {{0, "No"}, {1, "Yes"}};
//! DateDisplayFormat
extern const TagDetails DateDisplayFormat[] = {{0, "Y/M/D"}, {1, "M/D/Y"}, {2, "D/M/Y"}};
extern const TagDetails FilterEffect[] = {
{0x80, "Off"}, {0x81, "Yellow"}, {0x82, "Orange"}, {0x83, "Red"}, {0x84, "Green"}, {0xff, "n/a"},
};
extern const TagDetails ToningEffect[] = {
{0x80, "B&W"}, {0x81, "Sepia"}, {0x82, "Cyanotype"}, {0x83, "Red"},
{0x84, "Yellow"}, {0x85, "Green"}, {0x86, "Blue-green"}, {0x87, "Blue"},
{0x88, "Purple-blue"}, {0x89, "Red-purple"}, {0xff, "n/a"},
};
extern const TagDetails whiteBalance[] = {
{0, "Auto"}, {1, "Daylight"}, {2, "Shade"}, {3, "Fluorescent"}, {4, "Tungsten"}, {5, "Manual"},
};
enum movieHeaderTags {
MovieHeaderVersion,
CreateDate,
ModifyDate,
TimeScale,
Duration,
PreferredRate,
PreferredVolume,
PreviewTime = 18,
PreviewDuration,
PosterTime,
SelectionTime,
SelectionDuration,
CurrentTime,
NextTrackID
};
enum trackHeaderTags {
TrackHeaderVersion,
TrackCreateDate,
TrackModifyDate,
TrackID,
TrackDuration = 5,
TrackLayer = 8,
TrackVolume,
ImageWidth = 19,
ImageHeight
};
enum mediaHeaderTags {
MediaHeaderVersion,
MediaCreateDate,
MediaModifyDate,
MediaTimeScale,
MediaDuration,
MediaLanguageCode
};
enum handlerTags { HandlerClass = 1, HandlerType, HandlerVendorID };
enum videoHeaderTags { GraphicsMode = 2, OpColor };
enum stream { Video, Audio, Hint, Null, GenMediaHeader };
enum imageDescTags {
codec,
VendorID = 4,
SourceImageWidth_Height = 7,
XResolution,
YResolution,
CompressorName = 10,
BitDepth
};
enum audioDescTags { AudioFormat, AudioVendorID = 4, AudioChannels, AudioSampleRate = 7, MOV_AudioFormat = 13 };
/*!
@brief Function used to check equality of a Tags with a
particular string (ignores case while comparing).
@param buf Data buffer that will contain Tag to compare
@param str char* Pointer to string
@return Returns true if the buffer value is equal to string.
*/
bool equalsQTimeTag(Exiv2::DataBuf& buf, const char* str) {
for (int i = 0; i < 4; ++i)
if (tolower(buf.data()[i]) != tolower(str[i]))
return false;
return true;
}
/*!
@brief Function used to ignore Tags and values stored in them,
since they are not necessary as metadata information
@param buf Data buffer that will contain Tag to compare
@return Returns true, if Tag is found in the ignoreList[]
*/
bool ignoreList(Exiv2::DataBuf& buf) {
const char ignoreList[13][5] = {
"mdat", "edts", "junk", "iods", "alis", "stsc", "stsz", "stco", "ctts", "stss", "skip", "wide", "cmvd",
};
for (int i = 0; i < 13; ++i)
if (equalsQTimeTag(buf, ignoreList[i]))
return true;
return false;
}
/*!
@brief Function used to ignore Tags, basically Tags which
contain other tags inside them, since they are not necessary
as metadata information
@param buf Data buffer that will contain Tag to compare
@return Returns true, if Tag is found in the ignoreList[]
*/
bool dataIgnoreList(Exiv2::DataBuf& buf) {
const char ignoreList[8][5] = {
"moov", "mdia", "minf", "dinf", "alis", "stbl", "cmov", "meta",
};
for (int i = 0; i < 8; ++i)
if (equalsQTimeTag(buf, ignoreList[i]))
return true;
return false;
}
} // namespace Internal
} // namespace Exiv2
namespace Exiv2 {
using namespace Exiv2::Internal;
QuickTimeVideo::QuickTimeVideo(BasicIo::UniquePtr io) : Image(ImageType::qtime, mdNone, std::move(io)), timeScale_(1) {
} // QuickTimeVideo::QuickTimeVideo
std::string QuickTimeVideo::mimeType() const {
return "video/quicktime";
}
void QuickTimeVideo::writeMetadata() {
}
void QuickTimeVideo::readMetadata() {
if (io_->open() != 0)
throw Error(ErrorCode::kerDataSourceOpenFailed, io_->path(), strError());
// Ensure that this is the correct image type
if (!isQTimeType(*io_, false)) {
if (io_->error() || io_->eof())
throw Error(ErrorCode::kerFailedToReadImageData);
throw Error(ErrorCode::kerNotAnImage, "QuickTime");
}
IoCloser closer(*io_);
clearMetadata();
continueTraversing_ = true;
height_ = width_ = 1;
xmpData_["Xmp.video.FileSize"] = (double)io_->size() / (double)1048576;
xmpData_["Xmp.video.MimeType"] = mimeType();
while (continueTraversing_)
decodeBlock();
aspectRatio();
} // QuickTimeVideo::readMetadata
void QuickTimeVideo::decodeBlock(std::string const& entered_from) {
const long bufMinSize = 4;
DataBuf buf(bufMinSize + 1);
uint64_t size = 0;
buf.data()[4] = '\0';
io_->read(buf.data(), 4);
if (io_->eof()) {
continueTraversing_ = false;
return;
}
size = buf.read_uint32(0, bigEndian);
io_->readOrThrow(buf.data(), 4);
// we have read 2x 4 bytes
size_t hdrsize = 8;
if (size == 1) {
// The box size is encoded as a uint64_t, so we need to read another 8 bytes.
DataBuf data(8);
hdrsize += 8;
io_->readOrThrow(data.data(), data.size());
size = data.read_uint64(0, bigEndian);
} else if (size == 0) {
if (entered_from == "meta") {
size = buf.read_uint32(0, bigEndian);
io_->readOrThrow(buf.data(), 4, Exiv2::ErrorCode::kerCorruptedMetadata);
}
}
enforce(size >= hdrsize, Exiv2::ErrorCode::kerCorruptedMetadata);
enforce(size - hdrsize <= io_->size() - io_->tell(), Exiv2::ErrorCode::kerCorruptedMetadata);
enforce(size - hdrsize <= std::numeric_limits<size_t>::max(), Exiv2::ErrorCode::kerCorruptedMetadata);
// std::cerr<<"Tag=>"<<buf.data()<<" size=>"<<size-hdrsize << std::endl;
const size_t newsize = static_cast<size_t>(size - hdrsize);
if (newsize > buf.size()) {
buf.resize(newsize);
}
tagDecoder(buf, newsize);
} // QuickTimeVideo::decodeBlock
static std::string readString(BasicIo& io, size_t size) {
enforce(size <= io.size() - io.tell(), Exiv2::ErrorCode::kerCorruptedMetadata);
Exiv2::DataBuf str(size + 1);
io.readOrThrow(str.data(), size);
str.write_uint8(size, 0); // nul-terminate string
return Exiv2::toString(str.data());
}
void QuickTimeVideo::tagDecoder(Exiv2::DataBuf& buf, size_t size) {
assert(buf.size() > 4);
if (ignoreList(buf))
discard(size);
else if (dataIgnoreList(buf)) {
decodeBlock(Exiv2::toString(buf.data()));
} else if (equalsQTimeTag(buf, "ftyp"))
fileTypeDecoder(size);
else if (equalsQTimeTag(buf, "trak"))
setMediaStream();
else if (equalsQTimeTag(buf, "mvhd"))
movieHeaderDecoder(size);
else if (equalsQTimeTag(buf, "tkhd"))
trackHeaderDecoder(size);
else if (equalsQTimeTag(buf, "mdhd"))
mediaHeaderDecoder(size);
else if (equalsQTimeTag(buf, "hdlr"))
handlerDecoder(size);
else if (equalsQTimeTag(buf, "vmhd"))
videoHeaderDecoder(size);
else if (equalsQTimeTag(buf, "udta"))
userDataDecoder(size);
else if (equalsQTimeTag(buf, "dref"))
multipleEntriesDecoder();
else if (equalsQTimeTag(buf, "stsd"))
sampleDesc(size);
else if (equalsQTimeTag(buf, "stts"))
timeToSampleDecoder();
else if (equalsQTimeTag(buf, "pnot"))
previewTagDecoder(size);
else if (equalsQTimeTag(buf, "tapt"))
trackApertureTagDecoder(size);
else if (equalsQTimeTag(buf, "keys"))
keysTagDecoder(size);
else if (equalsQTimeTag(buf, "url ")) {
if (currentStream_ == Video)
xmpData_["Xmp.video.URL"] = readString(*io_, size);
else if (currentStream_ == Audio)
xmpData_["Xmp.audio.URL"] = readString(*io_, size);
}
else if (equalsQTimeTag(buf, "urn ")) {
if (currentStream_ == Video)
xmpData_["Xmp.video.URN"] = readString(*io_, size);
else if (currentStream_ == Audio)
xmpData_["Xmp.audio.URN"] = readString(*io_, size);
}
else if (equalsQTimeTag(buf, "dcom")) {
xmpData_["Xmp.video.Compressor"] = readString(*io_, size);
}
else if (equalsQTimeTag(buf, "smhd")) {
io_->readOrThrow(buf.data(), 4);
io_->readOrThrow(buf.data(), 4);
xmpData_["Xmp.audio.Balance"] = buf.read_uint16(0, bigEndian);
}
else {
discard(size);
}
} // QuickTimeVideo::tagDecoder
void QuickTimeVideo::discard(size_t size) {
size_t cur_pos = io_->tell();
io_->seek(cur_pos + size, BasicIo::beg);
} // QuickTimeVideo::discard
void QuickTimeVideo::previewTagDecoder(size_t size) {
DataBuf buf(4);
size_t cur_pos = io_->tell();
io_->readOrThrow(buf.data(), 4);
xmpData_["Xmp.video.PreviewDate"] = buf.read_uint32(0, bigEndian);
io_->readOrThrow(buf.data(), 2);
xmpData_["Xmp.video.PreviewVersion"] = getShort(buf.data(), bigEndian);
io_->readOrThrow(buf.data(), 4);
if (equalsQTimeTag(buf, "PICT"))
xmpData_["Xmp.video.PreviewAtomType"] = "QuickDraw Picture";
else
xmpData_["Xmp.video.PreviewAtomType"] = std::string{buf.c_str(), 4};
io_->seek(cur_pos + size, BasicIo::beg);
} // QuickTimeVideo::previewTagDecoder
void QuickTimeVideo::keysTagDecoder(size_t size) {
DataBuf buf(4);
size_t cur_pos = io_->tell();
io_->readOrThrow(buf.data(), 4);
xmpData_["Xmp.video.PreviewDate"] = buf.read_uint32(0, bigEndian);
io_->readOrThrow(buf.data(), 2);
xmpData_["Xmp.video.PreviewVersion"] = getShort(buf.data(), bigEndian);
io_->readOrThrow(buf.data(), 4);
if (equalsQTimeTag(buf, "PICT"))
xmpData_["Xmp.video.PreviewAtomType"] = "QuickDraw Picture";
else
xmpData_["Xmp.video.PreviewAtomType"] = std::string{buf.c_str(), 4};
io_->seek(cur_pos + size, BasicIo::beg);
} // QuickTimeVideo::keysTagDecoder
void QuickTimeVideo::trackApertureTagDecoder(size_t size) {
DataBuf buf(4), buf2(2);
size_t cur_pos = io_->tell();
byte n = 3;
while (n--) {
io_->seek(static_cast<long>(4), BasicIo::cur);
io_->readOrThrow(buf.data(), 4);
if (equalsQTimeTag(buf, "clef")) {
io_->seek(static_cast<long>(4), BasicIo::cur);
io_->readOrThrow(buf.data(), 2);
io_->readOrThrow(buf2.data(), 2);
xmpData_["Xmp.video.CleanApertureWidth"] =
Exiv2::toString(buf.read_uint16(0, bigEndian)) + "." + Exiv2::toString(buf2.read_uint16(0, bigEndian));
io_->readOrThrow(buf.data(), 2);
io_->readOrThrow(buf2.data(), 2);
xmpData_["Xmp.video.CleanApertureHeight"] =
Exiv2::toString(buf.read_uint16(0, bigEndian)) + "." + Exiv2::toString(buf2.read_uint16(0, bigEndian));
}
else if (equalsQTimeTag(buf, "prof")) {
io_->seek(static_cast<long>(4), BasicIo::cur);
io_->readOrThrow(buf.data(), 2);
io_->readOrThrow(buf2.data(), 2);
xmpData_["Xmp.video.ProductionApertureWidth"] =
Exiv2::toString(buf.read_uint16(0, bigEndian)) + "." + Exiv2::toString(buf2.read_uint16(0, bigEndian));
io_->readOrThrow(buf.data(), 2);
io_->readOrThrow(buf2.data(), 2);
xmpData_["Xmp.video.ProductionApertureHeight"] =
Exiv2::toString(buf.read_uint16(0, bigEndian)) + "." + Exiv2::toString(buf2.read_uint16(0, bigEndian));
}
else if (equalsQTimeTag(buf, "enof")) {
io_->seek(static_cast<long>(4), BasicIo::cur);
io_->readOrThrow(buf.data(), 2);
io_->readOrThrow(buf2.data(), 2);
xmpData_["Xmp.video.EncodedPixelsWidth"] =
Exiv2::toString(buf.read_uint16(0, bigEndian)) + "." + Exiv2::toString(buf2.read_uint16(0, bigEndian));
io_->readOrThrow(buf.data(), 2);
io_->readOrThrow(buf2.data(), 2);
xmpData_["Xmp.video.EncodedPixelsHeight"] =
Exiv2::toString(buf.read_uint16(0, bigEndian)) + "." + Exiv2::toString(buf2.read_uint16(0, bigEndian));
}
}
io_->seek(static_cast<long>(cur_pos + size), BasicIo::beg);
} // QuickTimeVideo::trackApertureTagDecoder
void QuickTimeVideo::CameraTagsDecoder(size_t size_external) {
size_t cur_pos = io_->tell();
DataBuf buf(50), buf2(4);
const TagDetails* td;
io_->readOrThrow(buf.data(), 4);
if (equalsQTimeTag(buf, "NIKO")) {
io_->seek(cur_pos, BasicIo::beg);
io_->readOrThrow(buf.data(), 24);
xmpData_["Xmp.video.Make"] = Exiv2::toString(buf.data());
io_->readOrThrow(buf.data(), 14);
xmpData_["Xmp.video.Model"] = Exiv2::toString(buf.data());
io_->readOrThrow(buf.data(), 4);
xmpData_["Xmp.video.ExposureTime"] = "1/" + Exiv2::toString(ceil(buf.read_uint32(0, littleEndian) / (double)10));
io_->readOrThrow(buf.data(), 4);
io_->readOrThrow(buf2.data(), 4);
xmpData_["Xmp.video.FNumber"] = buf.read_uint32(0, littleEndian) / (double)buf2.read_uint32(0, littleEndian);
io_->readOrThrow(buf.data(), 4);
io_->readOrThrow(buf2.data(), 4);
xmpData_["Xmp.video.ExposureCompensation"] =
buf.read_uint32(0, littleEndian) / (double)buf2.read_uint32(0, littleEndian);
io_->readOrThrow(buf.data(), 10);
io_->readOrThrow(buf.data(), 4);
td = find(whiteBalance, buf.read_uint32(0, littleEndian));
if (td)
xmpData_["Xmp.video.WhiteBalance"] = exvGettext(td->label_);
io_->readOrThrow(buf.data(), 4);
io_->readOrThrow(buf2.data(), 4);
xmpData_["Xmp.video.FocalLength"] = buf.read_uint32(0, littleEndian) / (double)buf2.read_uint32(0, littleEndian);
io_->seek(static_cast<long>(95), BasicIo::cur);
io_->readOrThrow(buf.data(), 48);
buf.write_uint8(48, 0);
xmpData_["Xmp.video.Software"] = Exiv2::toString(buf.data());
io_->readOrThrow(buf.data(), 4);
xmpData_["Xmp.video.ISO"] = buf.read_uint32(0, littleEndian);
}
io_->seek(cur_pos + size_external, BasicIo::beg);
} // QuickTimeVideo::CameraTagsDecoder
void QuickTimeVideo::userDataDecoder(size_t size_external) {
size_t cur_pos = io_->tell();
const TagVocabulary* td;
const TagVocabulary *tv, *tv_internal;
const long bufMinSize = 100;
DataBuf buf(bufMinSize);
size_t size_internal = size_external;
std::memset(buf.data(), 0x0, buf.size());
while ((size_internal / 4 != 0) && (size_internal > 0)) {
buf.data()[4] = '\0';
io_->readOrThrow(buf.data(), 4);
const size_t size = buf.read_uint32(0, bigEndian);
if (size > size_internal)
break;
size_internal -= size;
io_->readOrThrow(buf.data(), 4);
if (buf.data()[0] == 169)
buf.data()[0] = ' ';
td = find(userDatatags, Exiv2::toString(buf.data()));
tv = find(userDataReferencetags, Exiv2::toString(buf.data()));
if (size <= 12)
break;
else if (equalsQTimeTag(buf, "DcMD") || equalsQTimeTag(buf, "NCDT"))
userDataDecoder(size - 8);
else if (equalsQTimeTag(buf, "NCTG"))
NikonTagsDecoder(size - 8);
else if (equalsQTimeTag(buf, "TAGS"))
CameraTagsDecoder(size - 8);
else if (equalsQTimeTag(buf, "CNCV") || equalsQTimeTag(buf, "CNFV") || equalsQTimeTag(buf, "CNMN") ||
equalsQTimeTag(buf, "NCHD") || equalsQTimeTag(buf, "FFMV")) {
enforce(tv, Exiv2::ErrorCode::kerCorruptedMetadata);
xmpData_[exvGettext(tv->label_)] = readString(*io_, size - 8);
}
else if (equalsQTimeTag(buf, "CMbo") || equalsQTimeTag(buf, "Cmbo")) {
io_->readOrThrow(buf.data(), 2);
buf.data()[2] = '\0';
tv_internal = find(cameraByteOrderTags, Exiv2::toString(buf.data()));
if (tv_internal)
xmpData_[exvGettext(tv->label_)] = exvGettext(tv_internal->label_);
else
xmpData_[exvGettext(tv->label_)] = Exiv2::toString(buf.data());
}
else if (tv) {
io_->readOrThrow(buf.data(), 4);
xmpData_[exvGettext(tv->label_)] = readString(*io_, size - 12);
}
else if (td)
tagDecoder(buf, size - 8);
}
io_->seek(cur_pos + size_external, BasicIo::beg);
} // QuickTimeVideo::userDataDecoder
void QuickTimeVideo::NikonTagsDecoder(size_t size_external) {
size_t cur_pos = io_->tell();
DataBuf buf(200), buf2(4 + 1);
unsigned long TagID = 0;
unsigned short dataLength = 0, dataType = 2;
const TagDetails *td, *td2;
for (int i = 0; i < 100; i++) {
io_->readOrThrow(buf.data(), 4);
TagID = buf.read_uint32(0, bigEndian);
td = find(NikonNCTGTags, TagID);
io_->readOrThrow(buf.data(), 2);
dataType = buf.read_uint16(0, bigEndian);
std::memset(buf.data(), 0x0, buf.size());
io_->readOrThrow(buf.data(), 2);
if (TagID == 0x2000023) {
size_t local_pos = io_->tell();
dataLength = buf.read_uint16(0, bigEndian);
std::memset(buf.data(), 0x0, buf.size());
io_->readOrThrow(buf.data(), 4);
xmpData_["Xmp.video.PictureControlVersion"] = Exiv2::toString(buf.data());
io_->readOrThrow(buf.data(), 20);
xmpData_["Xmp.video.PictureControlName"] = Exiv2::toString(buf.data());
io_->readOrThrow(buf.data(), 20);
xmpData_["Xmp.video.PictureControlBase"] = Exiv2::toString(buf.data());
io_->readOrThrow(buf.data(), 4);
std::memset(buf.data(), 0x0, buf.size());
io_->readOrThrow(buf.data(), 1);
td2 = find(PictureControlAdjust, (int)buf.data()[0] & 7);
if (td2)
xmpData_["Xmp.video.PictureControlAdjust"] = exvGettext(td2->label_);
else
xmpData_["Xmp.video.PictureControlAdjust"] = (int)buf.data()[0] & 7;
io_->readOrThrow(buf.data(), 1);
td2 = find(NormalSoftHard, (int)buf.data()[0] & 7);
if (td2)
xmpData_["Xmp.video.PictureControlQuickAdjust"] = exvGettext(td2->label_);
io_->readOrThrow(buf.data(), 1);
td2 = find(NormalSoftHard, (int)buf.data()[0] & 7);
if (td2)
xmpData_["Xmp.video.Sharpness"] = exvGettext(td2->label_);
else
xmpData_["Xmp.video.Sharpness"] = (int)buf.data()[0] & 7;
io_->readOrThrow(buf.data(), 1);
td2 = find(NormalSoftHard, (int)buf.data()[0] & 7);
if (td2)
xmpData_["Xmp.video.Contrast"] = exvGettext(td2->label_);
else
xmpData_["Xmp.video.Contrast"] = (int)buf.data()[0] & 7;
io_->readOrThrow(buf.data(), 1);
td2 = find(NormalSoftHard, (int)buf.data()[0] & 7);
if (td2)
xmpData_["Xmp.video.Brightness"] = exvGettext(td2->label_);
else
xmpData_["Xmp.video.Brightness"] = (int)buf.data()[0] & 7;
io_->readOrThrow(buf.data(), 1);
td2 = find(Saturation, (int)buf.data()[0] & 7);
if (td2)
xmpData_["Xmp.video.Saturation"] = exvGettext(td2->label_);
else
xmpData_["Xmp.video.Saturation"] = (int)buf.data()[0] & 7;
io_->readOrThrow(buf.data(), 1);
xmpData_["Xmp.video.HueAdjustment"] = (int)buf.data()[0] & 7;
io_->readOrThrow(buf.data(), 1);
td2 = find(FilterEffect, (int)buf.data()[0]);
if (td2)
xmpData_["Xmp.video.FilterEffect"] = exvGettext(td2->label_);
else
xmpData_["Xmp.video.FilterEffect"] = (int)buf.data()[0];
io_->readOrThrow(buf.data(), 1);
td2 = find(ToningEffect, (int)buf.data()[0]);
if (td2)
xmpData_["Xmp.video.ToningEffect"] = exvGettext(td2->label_);
else
xmpData_["Xmp.video.ToningEffect"] = (int)buf.data()[0];
io_->readOrThrow(buf.data(), 1);
xmpData_["Xmp.video.ToningSaturation"] = (int)buf.data()[0];
io_->seek(local_pos + dataLength, BasicIo::beg);
}
else if (TagID == 0x2000024) {
size_t local_pos = io_->tell();
dataLength = buf.read_uint16(0, bigEndian);
std::memset(buf.data(), 0x0, buf.size());
io_->readOrThrow(buf.data(), 2);
xmpData_["Xmp.video.TimeZone"] = Exiv2::getShort(buf.data(), bigEndian);
io_->readOrThrow(buf.data(), 1);
td2 = find(YesNo, (int)buf.data()[0]);
if (td2)
xmpData_["Xmp.video.DayLightSavings"] = exvGettext(td2->label_);
io_->readOrThrow(buf.data(), 1);
td2 = find(DateDisplayFormat, (int)buf.data()[0]);
if (td2)
xmpData_["Xmp.video.DateDisplayFormat"] = exvGettext(td2->label_);
io_->seek(local_pos + dataLength, BasicIo::beg);
}
else if (dataType == 2 || dataType == 7) {
dataLength = buf.read_uint16(0, bigEndian);
std::memset(buf.data(), 0x0, buf.size());
// Sanity check with an "unreasonably" large number
if (dataLength > 200) {
#ifndef SUPPRESS_WARNINGS
EXV_ERROR << "Xmp.video Nikon Tags, dataLength was found to be larger than 200."
<< " Entries considered invalid. Not Processed.\n";
#endif
io_->seek(io_->tell() + dataLength, BasicIo::beg);
} else {
io_->readOrThrow(buf.data(), dataLength);
}
if (td) {
xmpData_[exvGettext(td->label_)] = Exiv2::toString(buf.data());
}
} else if (dataType == 4) {
dataLength = buf.read_uint16(0, bigEndian) * 4;
std::memset(buf.data(), 0x0, buf.size());
io_->readOrThrow(buf.data(), 4);
if (td)
xmpData_[exvGettext(td->label_)] = Exiv2::toString(buf.read_uint32(0, bigEndian));
// Sanity check with an "unreasonably" large number
if (dataLength > 200 || dataLength < 4) {