/
scan.c
1478 lines (1343 loc) · 48.4 KB
/
scan.c
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
/* scan.c
Copyright (c) 2003-2018 HandBrake Team
This file is part of the HandBrake source code
Homepage: <http://handbrake.fr/>.
It may be used under the terms of the GNU General Public License v2.
For full terms see the file COPYING file or visit http://www.gnu.org/licenses/gpl-2.0.html
*/
#include "hb.h"
#include "hbffmpeg.h"
typedef struct
{
hb_handle_t * h;
volatile int * die;
char * path;
int title_index;
hb_title_set_t * title_set;
hb_bd_t * bd;
hb_dvd_t * dvd;
hb_stream_t * stream;
hb_batch_t * batch;
int preview_count;
int store_previews;
uint64_t min_title_duration;
} hb_scan_t;
#define PREVIEW_READ_THRESH (200)
static void ScanFunc( void * );
static int DecodePreviews( hb_scan_t *, hb_title_t * title, int flush );
static void LookForAudio(hb_scan_t *scan, hb_title_t *title, hb_buffer_t *b);
static int AllAudioOK( hb_title_t * title );
static void UpdateState1(hb_scan_t *scan, int title);
static void UpdateState2(hb_scan_t *scan, int title);
static void UpdateState3(hb_scan_t *scan, int preview);
static const char *aspect_to_string(hb_rational_t *dar)
{
double aspect = (double)dar->num / dar->den;
switch ( (int)(aspect * 9.) )
{
case 9 * 4 / 3: return "4:3";
case 9 * 16 / 9: return "16:9";
}
static char arstr[32];
if (aspect >= 1)
sprintf(arstr, "%.2f:1", aspect);
else
sprintf(arstr, "1:%.2f", 1. / aspect );
return arstr;
}
hb_thread_t * hb_scan_init( hb_handle_t * handle, volatile int * die,
const char * path, int title_index,
hb_title_set_t * title_set, int preview_count,
int store_previews, uint64_t min_duration )
{
hb_scan_t * data = calloc( sizeof( hb_scan_t ), 1 );
data->h = handle;
data->die = die;
data->path = strdup( path );
data->title_index = title_index;
data->title_set = title_set;
data->preview_count = preview_count;
data->store_previews = store_previews;
data->min_title_duration = min_duration;
// Initialize scan state
hb_state_t state;
#define p state.param.scanning
state.state = HB_STATE_SCANNING;
p.title_cur = 1;
p.title_count = 1;
p.preview_cur = 0;
p.preview_count = 1;
p.progress = 0.0;
#undef p
hb_set_state(handle, &state);
return hb_thread_init( "scan", ScanFunc, data, HB_NORMAL_PRIORITY );
}
static void ScanFunc( void * _data )
{
hb_scan_t * data = (hb_scan_t *) _data;
hb_title_t * title;
int i;
int feature = 0;
data->bd = NULL;
data->dvd = NULL;
data->stream = NULL;
/* Try to open the path as a DVD. If it fails, try as a file */
if( ( data->bd = hb_bd_init( data->h, data->path ) ) )
{
hb_log( "scan: BD has %d title(s)",
hb_bd_title_count( data->bd ) );
if( data->title_index )
{
/* Scan this title only */
hb_list_add( data->title_set->list_title,
hb_bd_title_scan( data->bd,
data->title_index, 0 ) );
}
else
{
/* Scan all titles */
for( i = 0; i < hb_bd_title_count( data->bd ); i++ )
{
UpdateState1(data, i + 1);
hb_list_add( data->title_set->list_title,
hb_bd_title_scan( data->bd,
i + 1, data->min_title_duration ) );
}
feature = hb_bd_main_feature( data->bd,
data->title_set->list_title );
}
}
else if( ( data->dvd = hb_dvd_init( data->h, data->path ) ) )
{
hb_log( "scan: DVD has %d title(s)",
hb_dvd_title_count( data->dvd ) );
if( data->title_index )
{
/* Scan this title only */
hb_list_add( data->title_set->list_title,
hb_dvd_title_scan( data->dvd,
data->title_index, 0 ) );
}
else
{
/* Scan all titles */
for( i = 0; i < hb_dvd_title_count( data->dvd ); i++ )
{
UpdateState1(data, i + 1);
hb_list_add( data->title_set->list_title,
hb_dvd_title_scan( data->dvd,
i + 1, data->min_title_duration ) );
}
feature = hb_dvd_main_feature( data->dvd,
data->title_set->list_title );
}
}
else if ( ( data->batch = hb_batch_init( data->h, data->path ) ) )
{
if( data->title_index )
{
/* Scan this title only */
title = hb_batch_title_scan(data->batch, data->title_index, 0);
if ( title )
{
hb_list_add( data->title_set->list_title, title );
}
}
else
{
/* Scan all titles */
for( i = 0; i < hb_batch_title_count( data->batch ); i++ )
{
hb_title_t * title;
UpdateState1(data, i + 1);
title = hb_batch_title_scan(data->batch, i + 1,
data->min_title_duration);
if ( title != NULL )
{
hb_list_add( data->title_set->list_title, title );
}
}
}
}
else
{
// Title index 0 is not a valid title number and means scan all titles.
// So set title index to 1 in this scenario.
//
// Otherwise, set title index in new title to the index that was
// requested. This preserves the original index created in batch
// mode.
if (data->title_index == 0)
data->title_index = 1;
hb_title_t * title = hb_title_init( data->path, data->title_index );
data->stream = hb_stream_open(data->h, data->path, title, 1);
if (data->stream != NULL)
{
title = hb_stream_title_scan( data->stream, title );
if ( title )
hb_list_add( data->title_set->list_title, title );
}
else
{
hb_title_close( &title );
hb_log( "scan: unrecognized file type" );
goto finish;
}
}
for( i = 0; i < hb_list_count( data->title_set->list_title ); )
{
int j, npreviews;
hb_audio_t * audio;
if ( *data->die )
{
goto finish;
}
title = hb_list_item( data->title_set->list_title, i );
UpdateState2(data, i + 1);
/* Decode previews */
/* this will also detect more AC3 / DTS information */
npreviews = DecodePreviews( data, title, 1 );
if (npreviews < 2)
{
// Try harder to get some valid frames
// Allow libav to return "corrupt" frames
hb_log("scan: Too few previews (%d), trying harder", npreviews);
title->flags |= HBTF_NO_IDR;
npreviews = DecodePreviews( data, title, 0 );
}
if (npreviews == 0)
{
/* TODO: free things */
hb_list_rem( data->title_set->list_title, title );
for( j = 0; j < hb_list_count( title->list_audio ); j++)
{
audio = hb_list_item( title->list_audio, j );
if ( audio->priv.scan_cache )
{
hb_fifo_flush( audio->priv.scan_cache );
hb_fifo_close( &audio->priv.scan_cache );
}
}
hb_title_close( &title );
continue;
}
title->preview_count = npreviews;
/* Make sure we found audio rates and bitrates */
for( j = 0; j < hb_list_count( title->list_audio ); )
{
audio = hb_list_item( title->list_audio, j );
if ( audio->priv.scan_cache )
{
hb_fifo_flush( audio->priv.scan_cache );
hb_fifo_close( &audio->priv.scan_cache );
}
if( !audio->config.in.bitrate )
{
hb_log( "scan: removing audio 0x%x because no bitrate found",
audio->id );
hb_list_rem( title->list_audio, audio );
free( audio );
continue;
}
j++;
}
// VOBSUB and PGS width and height needs to be set to the
// title width and height for any stream type that does
// not provide this information (DVDs, BDs, VOBs, and M2TSs).
// Title width and height don't get set until we decode
// previews, so we can't set subtitle width/height till
// we get here.
for (j = 0; j < hb_list_count(title->list_subtitle); j++)
{
hb_subtitle_t *subtitle = hb_list_item(title->list_subtitle, j);
if ((subtitle->source == VOBSUB || subtitle->source == PGSSUB) &&
(subtitle->width <= 0 || subtitle->height <= 0))
{
subtitle->width = title->geometry.width;
subtitle->height = title->geometry.height;
}
}
i++;
}
data->title_set->feature = feature;
/* Mark title scan complete and init jobs */
for( i = 0; i < hb_list_count( data->title_set->list_title ); i++ )
{
title = hb_list_item( data->title_set->list_title, i );
title->flags |= HBTF_SCAN_COMPLETE;
}
if (hb_list_count(data->title_set->list_title) > 0)
{
strncpy(data->title_set->path, data->path, 1024);
data->title_set->path[1023] = 0;
}
else
{
data->title_set->path[0] = 0;
}
finish:
if( data->bd )
{
hb_bd_close( &data->bd );
}
if( data->dvd )
{
hb_dvd_close( &data->dvd );
}
if (data->stream)
{
hb_stream_close(&data->stream);
}
if( data->batch )
{
hb_batch_close( &data->batch );
}
free( data->path );
free( data );
_data = NULL;
hb_buffer_pool_free();
}
// -----------------------------------------------
// stuff related to cropping
#define DARK 32
static inline int absdiff( int x, int y )
{
return x < y ? y - x : x - y;
}
static inline int clampBlack( int x )
{
// luma 'black' is 16 and anything less should be clamped at 16
return x < 16 ? 16 : x;
}
static int row_all_dark( hb_buffer_t* buf, int row )
{
int width = buf->plane[0].width;
int stride = buf->plane[0].stride;
uint8_t *luma = buf->plane[0].data + stride * row;
// compute the average luma value of the row
int i, avg = 0;
for ( i = 0; i < width; ++i )
{
avg += clampBlack( luma[i] );
}
avg /= width;
if ( avg >= DARK )
return 0;
// since we're trying to detect smooth borders, only take the row if
// all pixels are within +-16 of the average (this range is fairly coarse
// but there's a lot of quantization noise for luma values near black
// so anything less will fail to crop because of the noise).
for ( i = 0; i < width; ++i )
{
if ( absdiff( avg, clampBlack( luma[i] ) ) > 16 )
return 0;
}
return 1;
}
static int column_all_dark( hb_buffer_t* buf, int top, int bottom, int col )
{
int stride = buf->plane[0].stride;
int height = buf->plane[0].height - top - bottom;
uint8_t *luma = buf->plane[0].data + stride * top + col;
// compute the average value of the column
int i = height, avg = 0, row = 0;
for ( ; --i >= 0; row += stride )
{
avg += clampBlack( luma[row] );
}
avg /= height;
if ( avg >= DARK )
return 0;
// since we're trying to detect smooth borders, only take the column if
// all pixels are within +-16 of the average.
i = height, row = 0;
for ( ; --i >= 0; row += stride )
{
if ( absdiff( avg, clampBlack( luma[row] ) ) > 16 )
return 0;
}
return 1;
}
#undef DARK
typedef struct {
int n;
int *t;
int *b;
int *l;
int *r;
} crop_record_t;
static crop_record_t * crop_record_init( int max_previews )
{
crop_record_t *crops = calloc( 1, sizeof(*crops) );
crops->t = calloc( max_previews, sizeof(int) );
crops->b = calloc( max_previews, sizeof(int) );
crops->l = calloc( max_previews, sizeof(int) );
crops->r = calloc( max_previews, sizeof(int) );
return crops;
}
static void crop_record_free( crop_record_t *crops )
{
free( crops->t );
free( crops->b );
free( crops->l );
free( crops->r );
free( crops );
}
static void record_crop( crop_record_t *crops, int t, int b, int l, int r )
{
crops->t[crops->n] = t;
crops->b[crops->n] = b;
crops->l[crops->n] = l;
crops->r[crops->n] = r;
++crops->n;
}
static int compare_int( const void *a, const void *b )
{
return *(const int *)a - *(const int *)b;
}
static void sort_crops( crop_record_t *crops )
{
qsort( crops->t, crops->n, sizeof(crops->t[0]), compare_int );
qsort( crops->b, crops->n, sizeof(crops->t[0]), compare_int );
qsort( crops->l, crops->n, sizeof(crops->t[0]), compare_int );
qsort( crops->r, crops->n, sizeof(crops->t[0]), compare_int );
}
// -----------------------------------------------
// stuff related to title width/height/aspect info
typedef struct {
int count; /* number of times we've seen this info entry */
hb_work_info_t info; /* copy of info entry */
} info_list_t;
static void remember_info( info_list_t *info_list, hb_work_info_t *info )
{
for ( ; info_list->count; ++info_list )
{
if ( memcmp( &info_list->info, info, sizeof(*info) ) == 0 )
{
// we found a match - bump its count
++info_list->count;
return;
}
}
// no match found - add new entry to list (info_list points to
// the first free slot). NB - we assume that info_list was allocated
// so that it's big enough even if there are no dups. I.e., 10 slots
// allocated if there are 10 previews.
info_list->count = 1;
info_list->info = *info;
}
static void most_common_info( info_list_t *info_list, hb_work_info_t *info )
{
int i, biggest = 0;
for ( i = 1; info_list[i].count; ++i )
{
if ( info_list[i].count > info_list[biggest].count )
biggest = i;
}
*info = info_list[biggest].info;
}
static int has_resolution_change( info_list_t *info_list )
{
int w, h, i;
if( !info_list[0].count )
return 0;
w = info_list[0].info.geometry.width;
h = info_list[0].info.geometry.height;
for ( i = 1; info_list[i].count; ++i )
{
if (w != info_list[i].info.geometry.width ||
h != info_list[i].info.geometry.height)
return 1;
}
return 0;
}
static int is_close_to( int val, int target, int thresh )
{
int diff = val - target;
diff = diff < 0 ? -diff : diff;
return diff < thresh;
}
static hb_buffer_t * read_buf(hb_scan_t * data, hb_stream_t * stream)
{
if (data->bd)
{
return hb_bd_read(data->bd);
}
else if (data->dvd)
{
return hb_dvd_read(data->dvd);
}
else if (stream)
{
return hb_stream_read(stream);
}
// This shouldn't happen
return NULL;
}
/***********************************************************************
* DecodePreviews
***********************************************************************
* Decode 10 pictures for the given title.
* It assumes that data->reader and data->vts have successfully been
* DVDOpen()ed and ifoOpen()ed.
**********************************************************************/
static int DecodePreviews( hb_scan_t * data, hb_title_t * title, int flush )
{
int i, npreviews = 0, abort = 0;
hb_buffer_t * buf, * buf_es;
hb_buffer_list_t list_es;
int progressive_count = 0;
int pulldown_count = 0;
int doubled_frame_count = 0;
int interlaced_preview_count = 0;
int vid_samples = 0;
int frame_wait = 0;
int cc_wait = 10;
int frames;
hb_stream_t * stream = NULL;
info_list_t * info_list;
int abort_audio = 0;
info_list = calloc(data->preview_count+1, sizeof(*info_list));
crop_record_t *crops = crop_record_init( data->preview_count );
hb_buffer_list_clear(&list_es);
if( data->batch )
{
hb_log( "scan: decoding previews for title %d (%s)", title->index, title->path );
}
else
{
hb_log( "scan: decoding previews for title %d", title->index );
}
if (data->bd)
{
hb_bd_start( data->bd, title );
hb_log( "scan: title angle(s) %d", title->angle_count );
}
else if (data->dvd)
{
hb_dvd_start( data->dvd, title, 1 );
title->angle_count = hb_dvd_angle_count( data->dvd );
hb_log( "scan: title angle(s) %d", title->angle_count );
}
else if (data->batch)
{
stream = hb_stream_open(data->h, title->path, title, 0);
}
else if (data->stream)
{
stream = hb_stream_open(data->h, data->path, title, 0);
}
if (title->video_codec == WORK_NONE)
{
hb_error("No video decoder set!");
free(info_list);
crop_record_free(crops);
hb_stream_close(&stream);
return 0;
}
hb_work_object_t *vid_decoder = hb_get_work(data->h, title->video_codec);
vid_decoder->codec_param = title->video_codec_param;
vid_decoder->title = title;
if (vid_decoder->init(vid_decoder, NULL))
{
hb_error("Decoder init failed!");
free(info_list);
crop_record_free(crops);
free( vid_decoder );
hb_stream_close(&stream);
return 0;
}
for( i = 0; i < data->preview_count; i++ )
{
int j;
UpdateState3(data, i + 1);
if ( *data->die )
{
free( info_list );
crop_record_free( crops );
vid_decoder->close( vid_decoder );
free( vid_decoder );
hb_stream_close(&stream);
return 0;
}
if (data->bd)
{
if( !hb_bd_seek( data->bd, (float) ( i + 1 ) / ( data->preview_count + 1.0 ) ) )
{
continue;
}
}
if (data->dvd)
{
if( !hb_dvd_seek( data->dvd, (float) ( i + 1 ) / ( data->preview_count + 1.0 ) ) )
{
continue;
}
}
else if (stream)
{
/* we start reading streams at zero rather than 1/11 because
* short streams may have only one sequence header in the entire
* file and we need it to decode any previews.
*
* Also, seeking to position 0 loses the palette of avi files
* so skip initial seek */
if (i != 0)
{
if (!hb_stream_seek(stream,
(float)i / (data->preview_count + 1.0)))
{
continue;
}
}
else
{
hb_stream_set_need_keyframe(stream, 1);
}
}
hb_deep_log( 2, "scan: preview %d", i + 1 );
if (flush && vid_decoder->flush)
vid_decoder->flush( vid_decoder );
if (title->flags & HBTF_NO_IDR)
{
if (!flush)
{
// If we are doing the first previews decode attempt,
// set this threshold high so that we get the best
// quality frames possible.
frame_wait = 100;
}
else
{
// If we failed to get enough valid frames in the first
// previews decode attempt, lower the threshold to improve
// our chances of getting something to work with.
frame_wait = 10;
}
}
else
{
// For certain mpeg-2 streams, libav is delivering a
// dummy first frame that is all black. So always skip
// one frame
frame_wait = 1;
}
frames = 0;
hb_buffer_t * vid_buf = NULL, * last_vid_buf = NULL;
int packets = 0;
vid_decoder->frame_count = 0;
while (vid_decoder->frame_count < PREVIEW_READ_THRESH ||
(!AllAudioOK(title) && packets < 10000))
{
if ((buf = read_buf(data, stream)) == NULL)
{
// If we reach EOF and no audio, don't continue looking for
// audio
abort_audio = 1;
if (vid_buf != NULL || last_vid_buf != NULL)
{
break;
}
hb_log("Warning: Could not read data for preview %d, skipped",
i + 1 );
// If we reach EOF and no video, don't continue looking for
// video
abort = 1;
goto skip_preview;
}
packets++;
if (buf->size <= 0)
{
// Ignore "null" frames
hb_buffer_close(&buf);
continue;
}
(hb_demux[title->demuxer])(buf, &list_es, 0 );
while ((buf_es = hb_buffer_list_rem_head(&list_es)) != NULL)
{
if( buf_es->s.id == title->video_id && vid_buf == NULL )
{
vid_decoder->work( vid_decoder, &buf_es, &vid_buf );
// There are 2 conditions we decode additional
// video frames for during scan.
// 1. We did not detect IDR frames, so the initial video
// frames may be corrupt. We docode extra frames to
// increase the probability of a complete preview frame
// 2. Some frames do not contain CC data, even though
// CCs are present in the stream. So we need to decode
// additional frames to find the CCs.
if (vid_buf != NULL && (frame_wait || cc_wait))
{
hb_work_info_t vid_info;
if (vid_decoder->info(vid_decoder, &vid_info))
{
if (is_close_to(vid_info.rate.den, 900900, 100) &&
(vid_buf->s.flags & PIC_FLAG_REPEAT_FIRST_FIELD))
{
/* Potentially soft telecine material */
pulldown_count++;
}
if (vid_buf->s.flags & PIC_FLAG_REPEAT_FRAME)
{
// AVCHD-Lite specifies that all streams are
// 50 or 60 fps. To produce 25 or 30 fps, camera
// makers are repeating all frames.
doubled_frame_count++;
}
if (is_close_to(vid_info.rate.den, 1126125, 100 ))
{
// Frame FPS is 23.976 (meaning it's
// progressive), so start keeping track of
// how many are reporting at that speed. When
// enough show up that way, we want to make
// that the overall title FPS.
progressive_count++;
}
vid_samples++;
}
if (frames > 0 && vid_buf->s.frametype == HB_FRAME_I)
frame_wait = 0;
if (frame_wait || cc_wait)
{
hb_buffer_close(&last_vid_buf);
last_vid_buf = vid_buf;
vid_buf = NULL;
if (frame_wait) frame_wait--;
if (cc_wait) cc_wait--;
}
frames++;
}
}
else if (!AllAudioOK(title) && !abort_audio)
{
LookForAudio( data, title, buf_es );
buf_es = NULL;
}
if ( buf_es )
hb_buffer_close( &buf_es );
}
if (vid_buf && (abort_audio || AllAudioOK(title)))
break;
}
hb_buffer_list_close(&list_es);
if (vid_buf == NULL)
{
vid_buf = last_vid_buf;
last_vid_buf = NULL;
}
hb_buffer_close(&last_vid_buf);
if (vid_buf == NULL)
{
hb_log( "scan: could not get a decoded picture" );
continue;
}
/* Get size and rate infos */
hb_work_info_t vid_info;
if( !vid_decoder->info( vid_decoder, &vid_info ) )
{
/*
* Could not fill vid_info, don't continue and try to use vid_info
* in this case.
*/
hb_log( "scan: could not get a video information" );
hb_buffer_close( &vid_buf );
continue;
}
if (vid_info.geometry.width != vid_buf->f.width ||
vid_info.geometry.height != vid_buf->f.height)
{
hb_log( "scan: video geometry information does not match buffer" );
hb_buffer_close( &vid_buf );
continue;
}
remember_info( info_list, &vid_info );
/* Check preview for interlacing artifacts */
if( hb_detect_comb( vid_buf, 10, 30, 9, 10, 30, 9 ) )
{
hb_deep_log( 2, "Interlacing detected in preview frame %i", i+1);
interlaced_preview_count++;
}
if( data->store_previews )
{
hb_save_preview( data->h, title->index, i, vid_buf );
}
/* Detect black borders */
int top, bottom, left, right;
int h4 = vid_info.geometry.height / 4, w4 = vid_info.geometry.width / 4;
// When widescreen content is matted to 16:9 or 4:3 there's sometimes
// a thin border on the outer edge of the matte. On TV content it can be
// "line 21" VBI data that's normally hidden in the overscan. For HD
// content it can just be a diagnostic added in post production so that
// the frame borders are visible. We try to ignore these borders so
// we can crop the matte. The border width depends on the resolution
// (12 pixels on 1080i looks visually the same as 4 pixels on 480i)
// so we allow the border to be up to 1% of the frame height.
const int border = vid_info.geometry.height / 100;
for ( top = border; top < h4; ++top )
{
if ( ! row_all_dark( vid_buf, top ) )
break;
}
if ( top <= border )
{
// we never made it past the border region - see if the rows we
// didn't check are dark or if we shouldn't crop at all.
for ( top = 0; top < border; ++top )
{
if ( ! row_all_dark( vid_buf, top ) )
break;
}
if ( top >= border )
{
top = 0;
}
}
for ( bottom = border; bottom < h4; ++bottom )
{
if ( ! row_all_dark( vid_buf, vid_info.geometry.height - 1 - bottom ) )
break;
}
if ( bottom <= border )
{
for ( bottom = 0; bottom < border; ++bottom )
{
if ( ! row_all_dark( vid_buf, vid_info.geometry.height - 1 - bottom ) )
break;
}
if ( bottom >= border )
{
bottom = 0;
}
}
for ( left = 0; left < w4; ++left )
{
if ( ! column_all_dark( vid_buf, top, bottom, left ) )
break;
}
for ( right = 0; right < w4; ++right )
{
if ( ! column_all_dark( vid_buf, top, bottom, vid_info.geometry.width - 1 - right ) )
break;
}
// only record the result if all the crops are less than a quarter of
// the frame otherwise we can get fooled by frames with a lot of black
// like titles, credits & fade-thru-black transitions.
if ( top < h4 && bottom < h4 && left < w4 && right < w4 )
{
record_crop( crops, top, bottom, left, right );
}
++npreviews;
skip_preview:
/* Make sure we found audio rates and bitrates */
for( j = 0; j < hb_list_count( title->list_audio ); j++ )
{
hb_audio_t * audio = hb_list_item( title->list_audio, j );
if ( audio->priv.scan_cache )
{
hb_fifo_flush( audio->priv.scan_cache );
}
}
if (vid_buf)
{
hb_buffer_close( &vid_buf );
}
if (abort)
{
break;
}
}
UpdateState3(data, i);
vid_decoder->close( vid_decoder );
free( vid_decoder );
if (stream != NULL)
{
hb_stream_close(&stream);
}
if ( npreviews )
{
// use the most common frame info for our final title dimensions
hb_work_info_t vid_info;
most_common_info( info_list, &vid_info );
title->has_resolution_change = has_resolution_change( info_list );
if ( title->video_codec_name == NULL )
{
title->video_codec_name = strdup( vid_info.name );
}
title->geometry.width = vid_info.geometry.width;
title->geometry.height = vid_info.geometry.height;
if (vid_info.rate.num && vid_info.rate.den)
{
// if the frame rate is very close to one of our "common"
// framerates, assume it actually is said frame rate;
// e.g. some 24000/1001 sources may have a rate.den of 1126124
// instead of 1126125
const hb_rate_t *video_framerate = NULL;
while ((video_framerate = hb_video_framerate_get_next(video_framerate)) != NULL)
{
if (is_close_to(vid_info.rate.den, video_framerate->rate, 100))
{
vid_info.rate.den = video_framerate->rate;
break;
}
}
title->vrate = vid_info.rate;
if( vid_info.rate.den == 900900 )
{
if (vid_samples >= 4 && pulldown_count >= vid_samples / 4)
{
title->vrate.den = 1126125;
hb_deep_log( 2, "Pulldown detected, setting fps to 23.976" );
}
if (vid_samples >= 2 && progressive_count >= vid_samples / 2)
{
// We've already deduced that the frame rate is 23.976,
// so set it back again.
title->vrate.den = 1126125;
hb_deep_log( 2, "Title's mostly NTSC Film, setting fps to 23.976" );
}
}
if (vid_samples >= 2 && doubled_frame_count >= 3 * vid_samples / 4)
{
// We've detected that a significant number of the frames
// have been doubled in duration by repeat flags.
title->vrate.den = 2 * vid_info.rate.den;
hb_deep_log(2, "Repeat frames detected, setting fps to %.3f",
(float)title->vrate.num / title->vrate.den );