-
Notifications
You must be signed in to change notification settings - Fork 345
/
cc608decoder.cpp
1480 lines (1336 loc) · 46.9 KB
/
cc608decoder.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
// -*- Mode: c++ -*-
// Some of the XDS was inspired by code in TVTime. -- dtk 03/30/2006
#include <algorithm>
using namespace std;
#include <QStringList>
#include "format.h"
#include "cc608decoder.h"
#include "mythcontext.h"
#include "mythlogging.h"
#include "vbilut.h"
#define DEBUG_XDS 0
static void init_xds_program_type(QString xds_program_type[96]);
CC608Decoder::CC608Decoder(CC608Input *ccr)
: reader(ccr), ignore_time_code(false),
rbuf(new unsigned char[sizeof(ccsubtitle)+255]),
vps_l(0),
wss_flags(0), wss_valid(false),
xds_crc_passed(0), xds_crc_failed(0),
xds_lock(QMutex::Recursive),
xds_net_call(QString::null), xds_net_name(QString::null),
xds_tsid(0)
{
for (uint i = 0; i < 2; i++)
{
badvbi[i] = 0;
lasttc[i] = 0;
lastcode[i] = -1;
lastcodetc[i] = 0;
ccmode[i] = -1;
xds[i] = 0;
txtmode[i*2+0] = 0;
txtmode[i*2+1] = 0;
}
// The following are not bzero() because MS Windows doesn't like it.
memset(lastrow, 0, sizeof(lastrow));
memset(newrow, 0, sizeof(newrow));
memset(newcol, 0, sizeof(newcol));
memset(timecode, 0, sizeof(timecode));
memset(row, 0, sizeof(row));
memset(col, 0, sizeof(col));
memset(rowcount, 0, sizeof(rowcount));
memset(style, 0, sizeof(style));
memset(linecont, 0, sizeof(linecont));
memset(resumetext, 0, sizeof(resumetext));
memset(lastclr, 0, sizeof(lastclr));
for (uint i = 0; i < 8; i++)
ccbuf[i] = "";
// fill translation table
for (uint i = 0; i < 128; i++)
stdchar[i] = QChar(i);
stdchar[42] = 'á';
stdchar[92] = 'é';
stdchar[94] = 'í';
stdchar[95] = 'ó';
stdchar[96] = 'ú';
stdchar[123] = 'ç';
stdchar[124] = '÷';
stdchar[125] = 'Ñ';
stdchar[126] = 'ñ';
stdchar[127] = 0x2588; /* full block */
// VPS data (MS Windows doesn't like bzero())
memset(vps_pr_label, 0, sizeof(vps_pr_label));
memset(vps_label, 0, sizeof(vps_label));
// XDS data
memset(xds_rating, 0, sizeof(uint) * 2 * 4);
for (uint i = 0; i < 2; i++)
{
xds_rating_systems[i] = 0;
xds_program_name[i] = QString::null;
}
init_xds_program_type(xds_program_type_string);
}
CC608Decoder::~CC608Decoder(void)
{
if (rbuf)
delete [] rbuf;
}
void CC608Decoder::FormatCC(int tc, int code1, int code2)
{
FormatCCField(tc, 0, code1);
FormatCCField(tc, 1, code2);
}
void CC608Decoder::GetServices(uint seconds, bool seen[4]) const
{
time_t now = time(NULL);
time_t then = now - seconds;
for (uint i = 0; i < 4; i++)
seen[i] = (last_seen[i] >= then);
}
static const int rowdata[] =
{
11, -1, 1, 2, 3, 4, 12, 13,
14, 15, 5, 6, 7, 8, 9, 10
};
static const QChar specialchar[] =
{
'®', '°', '½', '¿', 0x2122 /* TM */, '¢', '£', 0x266A /* 1/8 note */,
'à', ' ', 'è', 'â', 'ê', 'î', 'ô', 'û'
};
static const QChar extendedchar2[] =
{
'Á', 'É', 'Ó', 'Ú', 'Ü', 'ü', '`', '¡',
'*', '\'', 0x2014 /* dash */, '©',
0x2120 /* SM */, '·', 0x201C, 0x201D /* double quotes */,
'À', 'Â', 'Ç', 'È', 'Ê', 'Ë', 'ë', 'Î',
'Ï', 'ï', 'Ô', 'Ù', 'ù', 'Û', '«', '»'
};
static const QChar extendedchar3[] =
{
'Ã', 'ã', 'Í', 'Ì', 'ì', 'Ò', 'ò', 'Õ',
'õ', '{', '}', '\\', '^', '_', '¦', '~',
'Ä', 'ä', 'Ö', 'ö', 'ß', '¥', '¤', '|',
'Å', 'å', 'Ø', 'ø', 0x250C, 0x2510, 0x2514, 0x2518 /* box drawing */
};
void CC608Decoder::FormatCCField(int tc, int field, int data)
{
int b1, b2, len, x;
int mode;
if (data == -1) // invalid data. flush buffers to be safe.
{
// TODO: flush reader buffer
if (ccmode[field] != -1)
{
for (mode = field*4; mode < (field*4 + 4); mode++)
ResetCC(mode);
xds[field] = 0;
badvbi[field] = 0;
ccmode[field] = -1;
txtmode[field*2] = 0;
txtmode[field*2 + 1] = 0;
}
return;
}
b1 = data & 0x7f;
b2 = (data >> 8) & 0x7f;
#if 0
LOG(VB_VBI, LOG_DEBUG, QString("Format CC @%1/%2 = %3 %4")
.arg(tc).arg(field)
.arg((data&0xff), 2, 16)
.arg((data&0xff00)>>8, 2, 16));
#endif
if (ccmode[field] >= 0)
{
mode = field << 2 |
(txtmode[field*2 + ccmode[field]] << 1) |
ccmode[field];
len = ccbuf[mode].length();
}
else
{
mode = -1;
len = 0;
}
if (FalseDup(tc, field, data))
{
if (ignore_time_code)
return;
else
goto skip;
}
XDSDecode(field, b1, b2);
if (b1 & 0x60)
// 0x20 <= b1 <= 0x7F
// text codes
{
if (mode >= 0)
{
lastcodetc[field] += 33;
timecode[mode] = tc;
// commit row number only when first text code
// comes in
if (newrow[mode])
len = NewRowCC(mode, len);
ccbuf[mode] += CharCC(b1);
len++;
col[mode]++;
if (b2 & 0x60)
{
ccbuf[mode] += CharCC(b2);
len++;
col[mode]++;
}
}
}
else if ((b1 & 0x10) && (b2 > 0x1F))
// 0x10 <= b1 <= 0x1F
// control codes
{
lastcodetc[field] += 67;
int newccmode = (b1 >> 3) & 1;
int newtxtmode = txtmode[field*2 + newccmode];
if ((b1 & 0x06) == 0x04)
{
switch (b2)
{
case 0x29:
case 0x2C:
case 0x20:
case 0x2F:
case 0x25:
case 0x26:
case 0x27:
// CC1,2
newtxtmode = 0;
break;
case 0x2A:
case 0x2B:
// TXT1,2
newtxtmode = 1;
break;
}
}
ccmode[field] = newccmode;
txtmode[field*2 + newccmode] = newtxtmode;
mode = (field << 2) | (newtxtmode << 1) | ccmode[field];
timecode[mode] = tc;
len = ccbuf[mode].length();
if (b2 & 0x40) //preamble address code (row & indent)
{
if (newtxtmode)
// no address codes in TXT mode?
goto skip;
newrow[mode] = rowdata[((b1 << 1) & 14) | ((b2 >> 5) & 1)];
if (newrow[mode] == -1)
// bogus code?
newrow[mode] = lastrow[mode] + 1;
if (b2 & 0x10) //row contains indent flag
newcol[mode] = (b2 & 0x0E) << 1;
else
newcol[mode] = 0;
// row, indent settings are not final
// until text code arrives
}
else
{
switch (b1 & 0x07)
{
case 0x00: //attribute
#if 0
LOG(VB_GENERAL, LOG_DEBUG,
QString("<ATTRIBUTE %1 %2>").arg(b1).arg(b2);
#endif
break;
case 0x01: //midrow or char
if (newrow[mode])
len = NewRowCC(mode, len);
switch (b2 & 0x70)
{
case 0x20: //midrow attribute change
// TODO: we _do_ want colors, is that an attribute?
ccbuf[mode] += ' ';
len = ccbuf[mode].length();
col[mode]++;
break;
case 0x30: //special character..
ccbuf[mode] += specialchar[b2 & 0x0f];
len++;
col[mode]++;
break;
}
break;
case 0x02: //extended char
// extended char is preceded by alternate char
// - if there's no alternate, it could be noise
if (!len)
break;
if (b2 & 0x30)
{
ccbuf[mode].remove(len - 1, 1);
ccbuf[mode] += extendedchar2[b2 - 0x20];
len = ccbuf[mode].length();
break;
}
break;
case 0x03: //extended char
// extended char is preceded by alternate char
// - if there's no alternate, it could be noise
if (!len)
break;
if (b2 & 0x30)
{
ccbuf[mode].remove(len - 1, 1);
ccbuf[mode] += extendedchar3[b2 - 0x20];
len = ccbuf[mode].length();
break;
}
break;
case 0x04: //misc
case 0x05: //misc + F
#if 0
LOG(VB_GENERAL, LOG_DEBUG,
QString("ccmode %1 cmd %2").arg(ccmode)
.arg(b2, 2, 16, '0'));
#endif
switch (b2)
{
case 0x21: //backspace
// add backspace if line has been encoded already
if (newrow[mode])
len = NewRowCC(mode, len);
if (len == 0 ||
ccbuf[mode].left(1) == "\b")
{
ccbuf[mode] += (char)'\b';
len++;
col[mode]--;
}
else
{
ccbuf[mode].remove(len - 1, 1);
len = ccbuf[mode].length();
col[mode]--;
}
break;
case 0x25: //2 row caption
case 0x26: //3 row caption
case 0x27: //4 row caption
if (style[mode] == CC_STYLE_PAINT && len)
{
// flush
BufferCC(mode, len, 0);
ccbuf[mode] = "";
row[mode] = 0;
col[mode] = 0;
}
else if (style[mode] == CC_STYLE_POPUP)
ResetCC(mode);
rowcount[mode] = b2 - 0x25 + 2;
style[mode] = CC_STYLE_ROLLUP;
break;
case 0x2D: //carriage return
if (style[mode] != CC_STYLE_ROLLUP)
break;
if (newrow[mode])
row[mode] = newrow[mode];
// flush if there is text or need to scroll
// TODO: decode ITV (WebTV) link in TXT2
if (len || (row[mode] != 0 && !linecont[mode] &&
(!newtxtmode || row[mode] >= 16)))
{
BufferCC(mode, len, 0);
}
if (newtxtmode)
{
if (row[mode] < 16)
newrow[mode] = row[mode] + 1;
else
// scroll up previous lines
newrow[mode] = 16;
}
ccbuf[mode] = "";
col[mode] = 0;
linecont[mode] = 0;
break;
case 0x29:
// resume direct caption (paint-on style)
if (style[mode] == CC_STYLE_ROLLUP && len)
{
// flush
BufferCC(mode, len, 0);
ccbuf[mode] = "";
row[mode] = 0;
col[mode] = 0;
}
else if (style[mode] == CC_STYLE_POPUP)
ResetCC(mode);
style[mode] = CC_STYLE_PAINT;
rowcount[mode] = 0;
linecont[mode] = 0;
break;
case 0x2B: //resume text display
resumetext[mode] = 1;
if (row[mode] == 0)
{
newrow[mode] = 1;
newcol[mode] = 0;
}
style[mode] = CC_STYLE_ROLLUP;
break;
case 0x2C: //erase displayed memory
if (ignore_time_code ||
(tc - lastclr[mode]) > 5000 ||
lastclr[mode] == 0)
// don't overflow the frontend with
// too many redundant erase codes
BufferCC(mode, 0, 1);
if (style[mode] != CC_STYLE_POPUP)
{
row[mode] = 0;
col[mode] = 0;
}
linecont[mode] = 0;
break;
case 0x20: //resume caption (pop-up style)
if (style[mode] != CC_STYLE_POPUP)
{
if (len)
// flush
BufferCC(mode, len, 0);
ccbuf[mode] = "";
row[mode] = 0;
col[mode] = 0;
}
style[mode] = CC_STYLE_POPUP;
rowcount[mode] = 0;
linecont[mode] = 0;
break;
case 0x2F: //end caption + swap memory
if (style[mode] != CC_STYLE_POPUP)
{
if (len)
// flush
BufferCC(mode, len, 0);
}
else if (ignore_time_code ||
(tc - lastclr[mode]) > 5000 ||
lastclr[mode] == 0)
// clear and flush
BufferCC(mode, len, 1);
else if (len)
// flush
BufferCC(mode, len, 0);
ccbuf[mode] = "";
row[mode] = 0;
col[mode] = 0;
style[mode] = CC_STYLE_POPUP;
rowcount[mode] = 0;
linecont[mode] = 0;
break;
case 0x2A: //text restart
// clear display
BufferCC(mode, 0, 1);
ResetCC(mode);
// TXT starts at row 1
newrow[mode] = 1;
newcol[mode] = 0;
style[mode] = CC_STYLE_ROLLUP;
break;
case 0x2E: //erase non-displayed memory
ResetCC(mode);
break;
}
break;
case 0x07: //misc (TAB)
if (newrow[mode])
{
newcol[mode] += (b2 & 0x03);
len = NewRowCC(mode, len);
}
else
// illegal?
for (x = 0; x < (b2 & 0x03); x++)
{
ccbuf[mode] += ' ';
len++;
col[mode]++;
}
break;
}
}
}
skip:
for (mode = field*4; mode < (field*4 + 4); mode++)
{
len = ccbuf[mode].length();
if ((ignore_time_code || ((tc - timecode[mode]) > 100)) &&
(style[mode] != CC_STYLE_POPUP) && len)
{
// flush unfinished line if waiting too long
// in paint-on or scroll-up mode
timecode[mode] = tc;
BufferCC(mode, len, 0);
ccbuf[mode] = "";
row[mode] = lastrow[mode];
linecont[mode] = 1;
}
}
if (data != lastcode[field])
{
lastcode[field] = data;
lastcodetc[field] = tc;
}
lasttc[field] = tc;
}
int CC608Decoder::FalseDup(int tc, int field, int data)
{
int b1, b2;
b1 = data & 0x7f;
b2 = (data >> 8) & 0x7f;
if (ignore_time_code)
{
// most digital streams with encoded VBI
// have duplicate control codes;
// suppress every other repeated control code
if ((data == lastcode[field]) &&
((b1 & 0x70) == 0x10))
{
lastcode[field] = -1;
return 1;
}
else
{
return 0;
}
}
// bttv-0.9 VBI reads are pretty reliable (1 read/33367us).
// bttv-0.7 reads don't seem to work as well so if read intervals
// vary from this, be more conservative in detecting duplicate
// CC codes.
int dup_text_fudge, dup_ctrl_fudge;
if (badvbi[field] < 100 && b1 != 0 && b2 != 0)
{
int d = tc - lasttc[field];
if (d < 25 || d > 42)
badvbi[field]++;
else if (badvbi[field] > 0)
badvbi[field]--;
}
if (badvbi[field] < 4)
{
// this should pick up all codes
dup_text_fudge = -2;
// this should pick up 1st, 4th, 6th, 8th, ... codes
dup_ctrl_fudge = 33 - 4;
}
else
{
dup_text_fudge = 4;
dup_ctrl_fudge = 33 - 4;
}
if (data == lastcode[field])
{
if ((b1 & 0x70) == 0x10)
{
if (tc > (lastcodetc[field] + 67 + dup_ctrl_fudge))
return 0;
}
else if (b1)
{
// text, XDS
if (tc > (lastcodetc[field] + 33 + dup_text_fudge))
return 0;
}
return 1;
}
return 0;
}
void CC608Decoder::ResetCC(int mode)
{
// lastrow[mode] = 0;
// newrow[mode] = 0;
// newcol[mode] = 0;
// timecode[mode] = 0;
row[mode] = 0;
col[mode] = 0;
rowcount[mode] = 0;
// style[mode] = CC_STYLE_POPUP;
linecont[mode] = 0;
resumetext[mode] = 0;
lastclr[mode] = 0;
ccbuf[mode] = "";
}
void CC608Decoder::BufferCC(int mode, int len, int clr)
{
QByteArray tmpbuf;
if (len)
{
// calculate UTF-8 encoding length
tmpbuf = ccbuf[mode].toUtf8();
len = min(tmpbuf.length(), 255);
}
unsigned char f;
unsigned char *bp = rbuf;
*(bp++) = row[mode];
*(bp++) = rowcount[mode];
*(bp++) = style[mode];
// overload resumetext field
f = resumetext[mode];
f |= mode << 4;
if (linecont[mode])
f |= CC_LINE_CONT;
*(bp++) = f;
*(bp++) = clr;
*(bp++) = len;
if (len)
{
memcpy(bp,
tmpbuf.constData(),
len);
len += sizeof(ccsubtitle);
}
else
len = sizeof(ccsubtitle);
LOG(VB_VBI, LOG_INFO, QString("### %1 %2 %3 %4 %5 %6 %7 -")
.arg(timecode[mode], 10)
.arg(row[mode], 2).arg(rowcount[mode])
.arg(style[mode]).arg(f, 2, 16)
.arg(clr).arg(len, 3));
if (len && VERBOSE_LEVEL_CHECK(VB_VBI, LOG_INFO))
{
QString dispbuf = QString::fromUtf8(tmpbuf.constData(), len);
LOG(VB_VBI, LOG_INFO, QString("%1 '").arg(timecode[mode], 10));
QString vbuf = "";
int i = 0;
while (i < dispbuf.length()) {
QChar cp = dispbuf.at(i);
switch (cp.unicode())
{
case 0x2120 : vbuf += "(SM)"; break;
case 0x2122 : vbuf += "(TM)"; break;
case 0x2014 : vbuf += "(--)"; break;
case 0x201C : vbuf += "``"; break;
case 0x201D : vbuf += "''"; break;
case 0x250C : vbuf += "|-"; break;
case 0x2510 : vbuf += "-|"; break;
case 0x2514 : vbuf += "|_"; break;
case 0x2518 : vbuf += "_|"; break;
case 0x2588 : vbuf += "[]"; break;
case 0x266A : vbuf += "o/~"; break;
case '\b' : vbuf += "\\b"; break;
default : vbuf += QString(cp.toLatin1());
}
i++;
}
LOG(VB_VBI, LOG_INFO, vbuf);
}
reader->AddTextData(rbuf, len, timecode[mode], 'C');
int ccmode = rbuf[3] & CC_MODE_MASK;
int stream = -1;
switch (ccmode)
{
case CC_CC1: stream = 0; break;
case CC_CC2: stream = 1; break;
case CC_CC3: stream = 2; break;
case CC_CC4: stream = 3; break;
}
if (stream >= 0)
last_seen[stream] = time(NULL);
resumetext[mode] = 0;
if (clr && !len)
lastclr[mode] = timecode[mode];
else if (len)
lastclr[mode] = 0;
}
int CC608Decoder::NewRowCC(int mode, int len)
{
if (style[mode] == CC_STYLE_ROLLUP)
{
// previous line was likely missing a carriage return
row[mode] = newrow[mode];
if (len)
{
BufferCC(mode, len, 0);
ccbuf[mode] = "";
len = 0;
}
col[mode] = 0;
linecont[mode] = 0;
}
else
{
// popup/paint style
if (row[mode] == 0)
{
if (len == 0)
row[mode] = newrow[mode];
else
{
// previous line was missing a row address
// - assume it was one row up
ccbuf[mode] += (char)'\n';
len++;
if (row[mode] == 0)
row[mode] = newrow[mode] - 1;
else
row[mode]--;
}
}
else if (newrow[mode] > lastrow[mode])
{
// next line can be more than one row away
for (int i = 0; i < (newrow[mode] - lastrow[mode]); i++)
{
ccbuf[mode] += (char)'\n';
len++;
}
col[mode] = 0;
}
else if (newrow[mode] == lastrow[mode])
{
// same row
if (newcol[mode] >= col[mode])
// new line appends to current line
newcol[mode] -= col[mode];
else
{
// new line overwrites current line;
// could be legal (overwrite spaces?) but
// more likely we have bad address codes
// - just move to next line; may exceed row 15
// but frontend will adjust
ccbuf[mode] += (char)'\n';
len++;
col[mode] = 0;
}
}
else
{
// next line goes upwards (not legal?)
// - flush
BufferCC(mode, len, 0);
ccbuf[mode] = "";
row[mode] = newrow[mode];
col[mode] = 0;
linecont[mode] = 0;
len = 0;
}
}
lastrow[mode] = newrow[mode];
newrow[mode] = 0;
for (int x = 0; x < newcol[mode]; x++)
{
ccbuf[mode] += ' ';
len++;
col[mode]++;
}
newcol[mode] = 0;
return len;
}
static bool IsPrintable(char c)
{
return !(((c) & 0x7F) < 0x20 || ((c) & 0x7F) > 0x7E);
}
static char Printable(char c)
{
return IsPrintable(c) ? ((c) & 0x7F) : '.';
}
#if 0
static int OddParity(unsigned char c)
{
c ^= (c >> 4); c ^= (c >> 2); c ^= (c >> 1);
return c & 1;
}
#endif
// // // // // // // // // // // // // // // // // // // // // // // //
// // // // // // // // // // // VPS // // // // // // // // // // //
// // // // // // // // // // // // // // // // // // // // // // // //
static void DumpPIL(int pil)
{
int day = (pil >> 15);
int mon = (pil >> 11) & 0xF;
int hour = (pil >> 6 ) & 0x1F;
int min = (pil ) & 0x3F;
#define _PIL_(day, mon, hour, min) \
(((day) << 15) + ((mon) << 11) + ((hour) << 6) + ((min) << 0))
if (pil == _PIL_(0, 15, 31, 63))
LOG(VB_VBI, LOG_INFO, " PDC: Timer-control (no PDC)");
else if (pil == _PIL_(0, 15, 30, 63))
LOG(VB_VBI, LOG_INFO, " PDC: Recording inhibit/terminate");
else if (pil == _PIL_(0, 15, 29, 63))
LOG(VB_VBI, LOG_INFO, " PDC: Interruption");
else if (pil == _PIL_(0, 15, 28, 63))
LOG(VB_VBI, LOG_INFO, " PDC: Continue");
else if (pil == _PIL_(31, 15, 31, 63))
LOG(VB_VBI, LOG_INFO, " PDC: No time");
else
LOG(VB_VBI, LOG_INFO, QString(" PDC: %1, 200X-%2-%3 %4:%5")
.arg(pil).arg(mon).arg(day).arg(hour).arg(min));
#undef _PIL_
}
void CC608Decoder::DecodeVPS(const unsigned char *buf)
{
int cni, pcs, pty, pil;
int c = vbi_bit_reverse[buf[1]];
if ((int8_t) c < 0)
{
vps_label[vps_l] = 0;
memcpy(vps_pr_label, vps_label, sizeof(vps_pr_label));
vps_l = 0;
}
c &= 0x7F;
vps_label[vps_l] = Printable(c);
vps_l = (vps_l + 1) % 16;
LOG(VB_VBI, LOG_INFO, QString("VPS: 3-10: %1 %2 %3 %4 %5 %6 %7 %8 (\"%9\")")
.arg(buf[0]).arg(buf[1]).arg(buf[2]).arg(buf[3]).arg(buf[4])
.arg(buf[5]).arg(buf[6]).arg(buf[7]).arg(vps_pr_label));
pcs = buf[2] >> 6;
cni = + ((buf[10] & 3) << 10)
+ ((buf[11] & 0xC0) << 2)
+ ((buf[8] & 0xC0) << 0)
+ (buf[11] & 0x3F);
pil = ((buf[8] & 0x3F) << 14) + (buf[9] << 6) + (buf[10] >> 2);
pty = buf[12];
LOG(VB_VBI, LOG_INFO, QString("CNI: %1 PCS: %2 PTY: %3 ")
.arg(cni).arg(pcs).arg(pty));
DumpPIL(pil);
// c & 0xf0;
}
// // // // // // // // // // // // // // // // // // // // // // // //
// // // // // // // // // // // WSS // // // // // // // // // // //
// // // // // // // // // // // // // // // // // // // // // // // //
void CC608Decoder::DecodeWSS(const unsigned char *buf)
{
static const int wss_bits[8] = { 0, 0, 0, 1, 0, 1, 1, 1 };
uint wss = 0;
for (uint i = 0; i < 16; i++)
{
uint b1 = wss_bits[buf[i] & 7];
uint b2 = wss_bits[(buf[i] >> 3) & 7];
if (b1 == b2)
return;
wss |= b2 << i;
}
unsigned char parity = wss & 0xf;
parity ^= parity >> 2;
parity ^= parity >> 1;
LOG(VB_VBI, LOG_INFO,
QString("WSS: %1; %2 mode; %3 color coding;\n\t\t\t"
" %4 helper; reserved b7=%5; %6\n\t\t\t"
" open subtitles: %7; %scopyright %8; copying %9")
.arg(formats[wss & 7])
.arg((wss & 0x0010) ? "film" : "camera")
.arg((wss & 0x0020) ? "MA/CP" : "standard")
.arg((wss & 0x0040) ? "modulated" : "no")
.arg(!!(wss & 0x0080))
.arg((wss & 0x0100) ? "have TTX subtitles; " : "")
.arg(subtitles[(wss >> 9) & 3])
.arg((wss & 0x0800) ? "surround sound; " : "")
.arg((wss & 0x1000) ? "asserted" : "unknown")
.arg((wss & 0x2000) ? "restricted" : "not restricted"));
if (parity & 1)
{
wss_flags = wss;
wss_valid = true;
}
}
QString CC608Decoder::XDSDecodeString(const vector<unsigned char> &buf,
uint start, uint end) const
{
#if DEBUG_XDS
for (uint i = start; (i < buf.size()) && (i < end); i++)
{
LOG(VB_VBI, LOG_INFO, QString("%1: 0x%2 -> 0x%3 %4")
.arg(i,2).arg(buf[i],2,16)
.arg(CharCC(buf[i]),2,16)
.arg(CharCC(buf[i])));
}
#endif // DEBUG_XDS
QString tmp = "";
for (uint i = start; (i < buf.size()) && (i < end); i++)
{
if (buf[i] > 0x0)
tmp += CharCC(buf[i]);
}
#if DEBUG_XDS
LOG(VB_VBI, LOG_INFO, QString("XDSDecodeString: '%1'").arg(tmp));
#endif // DEBUG_XDS
return tmp.trimmed();
}
static bool is_better(const QString &newStr, const QString &oldStr)
{
if (!newStr.isEmpty() && newStr != oldStr &&
(newStr != oldStr.left(newStr.length())))
{
if (oldStr.isEmpty())
return true;
// check if the string contains any bogus characters
for (int i = 0; i < newStr.length(); i++)
if (newStr[i].toAscii() < 0x20)
return false;
return true;
}
return false;
}
uint CC608Decoder::GetRatingSystems(bool future) const
{
QMutexLocker locker(&xds_lock);
return xds_rating_systems[(future) ? 1 : 0];
}
uint CC608Decoder::GetRating(uint i, bool future) const
{
QMutexLocker locker(&xds_lock);
return xds_rating[(future) ? 1 : 0][i & 0x3] & 0x7;
}
QString CC608Decoder::GetRatingString(uint i, bool future) const
{
QMutexLocker locker(&xds_lock);
QString prefix[4] = { "MPAA-", "TV-", "CE-", "CF-" };
QString mainStr[4][8] =
{
{ "NR", "G", "PG", "PG-13", "R", "NC-17", "X", "NR" },
{ "NR", "Y", "Y7", "G", "PG", "14", "MA", "NR" },
{ "E", "C", "C8+", "G", "PG", "14+", "18+", "NR" },
{ "E", "G", "8+", "13+", "16+", "18+", "NR", "NR" },
};
QString main = prefix[i] + mainStr[i][GetRating(i, future)];