-
Notifications
You must be signed in to change notification settings - Fork 345
/
dvdringbuffer.cpp
2333 lines (2014 loc) · 66.9 KB
/
dvdringbuffer.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
#include <unistd.h>
#include <stdlib.h>
// Qt headers
#include <QCoreApplication>
// MythTV headers
#include "mythconfig.h"
#include "dvdringbuffer.h"
#include "mythcontext.h"
#include "mythmediamonitor.h"
#include "iso639.h"
#include "mythdvdplayer.h"
#include "compat.h"
#include "mythlogging.h"
#include "mythuihelper.h"
#define LOC QString("DVDRB: ")
#define IncrementButtonVersion \
if (++m_buttonVersion > 1024) \
m_buttonVersion = 1;
#define DVD_DRIVE_SPEED 1
static const char *dvdnav_menu_table[] =
{
NULL,
NULL,
QT_TRANSLATE_NOOP("(DVD menu)", "Title Menu"),
QT_TRANSLATE_NOOP("(DVD menu)", "Root Menu"),
QT_TRANSLATE_NOOP("(DVD menu)", "Subpicture Menu"),
QT_TRANSLATE_NOOP("(DVD menu)", "Audio Menu"),
QT_TRANSLATE_NOOP("(DVD menu)", "Angle Menu"),
QT_TRANSLATE_NOOP3("(DVD menu)", "Part Menu", "DVD part/chapter menu"),
};
DVDInfo::DVDInfo(const QString &filename)
: m_nav(NULL), m_name(NULL), m_serialnumber(NULL)
{
LOG(VB_PLAYBACK, LOG_INFO, QString("DVDInfo: Trying %1").arg(filename));
QString name = filename;
if (name.startsWith("dvd://"))
name.remove(0,5);
else if (name.startsWith("dvd:/"))
name.remove(0,4);
else if (name.startsWith("dvd:"))
name.remove(0,4);
QByteArray fname = name.toLocal8Bit();
dvdnav_status_t res = dvdnav_open(&m_nav, fname.constData());
if (res == DVDNAV_STATUS_ERR)
{
m_lastError = tr("Failed to open device at %1")
.arg(fname.constData());
LOG(VB_GENERAL, LOG_ERR, QString("DVDInfo: ") + m_lastError);
return;
}
res = dvdnav_get_title_string(m_nav, &m_name);
if (res == DVDNAV_STATUS_ERR)
LOG(VB_GENERAL, LOG_ERR, "DVDInfo: Failed to get name.");
res = dvdnav_get_serial_string(m_nav, &m_serialnumber);
if (res == DVDNAV_STATUS_ERR)
LOG(VB_GENERAL, LOG_ERR, "DVDInfo: Failed to get serial number.");
}
DVDInfo::~DVDInfo(void)
{
if (m_nav)
dvdnav_close(m_nav);
LOG(VB_PLAYBACK, LOG_INFO, QString("DVDInfo: Finishing."));
}
bool DVDInfo::GetNameAndSerialNum(QString &name, QString &serial)
{
name = QString(m_name);
serial = QString(m_serialnumber);
if (name.isEmpty() && serial.isEmpty())
return false;
return true;
}
MythDVDContext::MythDVDContext(const dsi_t& dsi, const pci_t& pci) :
ReferenceCounter("MythDVDContext"),
m_dsi(dsi),
m_pci(pci)
{
}
MythDVDContext::~MythDVDContext()
{
}
/** \brief Returns the duration of this VOBU in frames
* \sa GetNumFramesPresent
*/
int MythDVDContext::GetNumFrames() const
{
return ((GetEndPTS() - GetStartPTS()) * GetFPS()) / 90000;
}
/** \brief Returns the number of video frames present in this VOBU
* \sa GetNumFrames
*/
int MythDVDContext::GetNumFramesPresent() const
{
int frames = 0;
if (GetSeqEndPTS())
{
// Sequence end PTS is set. This means that video frames
// are not present all the way to 'End PTS'
frames = ((GetSeqEndPTS() - GetStartPTS()) * GetFPS()) / 90000;
}
else
if (m_dsi.dsi_gi.vobu_1stref_ea != 0)
{
// At least one video frame is present
frames = GetNumFrames();
}
return frames;
}
/** \brief Returns the logical block address of the previous
* VOBU containing video.
* \return LBA or 0xbfffffff if no previous VOBU with video exists
*/
uint32_t MythDVDContext::GetLBAPrevVideoFrame() const
{
uint32_t lba = m_dsi.vobu_sri.prev_video;
if (lba != 0xbfffffff)
{
// If there is a previous video frame in this
// cell, calculate the absolute LBA from the
// offset
lba = GetLBA() - (lba & 0x7ffffff);
}
return lba;
}
DVDRingBuffer::DVDRingBuffer(const QString &lfilename) :
RingBuffer(kRingBuffer_DVD),
m_dvdnav(NULL), m_dvdBlockReadBuf(NULL),
m_dvdBlockRPos(0), m_dvdBlockWPos(0),
m_pgLength(0), m_pgcLength(0),
m_cellStart(0), m_cellChanged(false),
m_pgcLengthChanged(false), m_pgStart(0),
m_currentpos(0),
m_lastNav(NULL), m_part(0), m_lastPart(0),
m_title(0), m_lastTitle(0), m_playerWait(false),
m_titleParts(0), m_gotStop(false), m_currentAngle(0),
m_currentTitleAngleCount(0),
m_endPts(0), m_timeDiff(0),
m_still(0), m_lastStill(0),
m_audioStreamsChanged(false),
m_dvdWaiting(false),
m_titleLength(0),
m_skipstillorwait(true),
m_cellstartPos(0), m_buttonSelected(false),
m_buttonExists(false),
m_buttonSeenInCell(false), m_lastButtonSeenInCell(false),
m_cellid(0), m_lastcellid(0),
m_vobid(0), m_lastvobid(0),
m_cellRepeated(false),
m_curAudioTrack(0),
m_curSubtitleTrack(0),
m_autoselectsubtitle(true),
m_dvdname(NULL), m_serialnumber(NULL),
m_seeking(false), m_seektime(0),
m_currentTime(0),
m_parent(NULL),
m_forcedAspect(-1.0f),
m_contextLock(QMutex::Recursive), m_context(NULL),
m_processState(PROCESS_NORMAL),
m_dvdStat(DVDNAV_STATUS_OK),
m_dvdEvent(0),
m_dvdEventSize(0),
// Menu/buttons
m_inMenu(false), m_buttonVersion(1), m_buttonStreamID(0),
m_hl_button(0, 0, 0, 0), m_menuSpuPkt(0), m_menuBuflength(0)
{
memset(&m_dvdMenuButton, 0, sizeof(AVSubtitle));
memset(m_dvdBlockWriteBuf, 0, sizeof(char) * DVD_BLOCK_SIZE);
memset(m_clut, 0, sizeof(uint32_t) * 16);
memset(m_button_color, 0, sizeof(uint8_t) * 4);
memset(m_button_alpha, 0, sizeof(uint8_t) * 4);
uint def[8] = { 3, 5, 10, 20, 30, 60, 120, 180 };
uint seekValues[8] = { 1, 2, 4, 8, 10, 15, 20, 60 };
for (uint i = 0; i < 8; i++)
m_seekSpeedMap.insert(def[i], seekValues[i]);
OpenFile(lfilename);
}
DVDRingBuffer::~DVDRingBuffer()
{
KillReadAheadThread();
CloseDVD();
m_menuBtnLock.lock();
ClearMenuSPUParameters();
m_menuBtnLock.unlock();
ClearChapterCache();
}
void DVDRingBuffer::CloseDVD(void)
{
QMutexLocker contextLocker(&m_contextLock);
rwlock.lockForWrite();
if (m_dvdnav)
{
SetDVDSpeed(-1);
dvdnav_close(m_dvdnav);
m_dvdnav = NULL;
}
if (m_context)
{
m_context->DecrRef();
m_context = NULL;
}
m_gotStop = false;
m_audioStreamsChanged = true;
rwlock.unlock();
}
void DVDRingBuffer::ClearChapterCache(void)
{
rwlock.lockForWrite();
foreach (QList<uint64_t> chapters, m_chapterMap)
chapters.clear();
m_chapterMap.clear();
rwlock.unlock();
}
long long DVDRingBuffer::Seek(long long pos, int whence, bool has_lock)
{
LOG(VB_FILE, LOG_INFO, LOC + QString("Seek(%1,%2,%3)")
.arg(pos).arg((whence == SEEK_SET) ? "SEEK_SET":
((whence == SEEK_CUR) ? "SEEK_CUR" : "SEEK_END"))
.arg(has_lock ? "locked" : "unlocked"));
long long ret = -1;
// lockForWrite takes priority over lockForRead, so this will
// take priority over the lockForRead in the read ahead thread.
if (!has_lock)
rwlock.lockForWrite();
poslock.lockForWrite();
// Optimize no-op seeks
if (readaheadrunning &&
((whence == SEEK_SET && pos == readpos) ||
(whence == SEEK_CUR && pos == 0)))
{
ret = readpos;
poslock.unlock();
if (!has_lock)
rwlock.unlock();
return ret;
}
// only valid for SEEK_SET & SEEK_CUR
long long new_pos = (SEEK_SET==whence) ? pos : readpos + pos;
// Here we perform a normal seek. When successful we
// need to call ResetReadAhead(). A reset means we will
// need to refill the buffer, which takes some time.
if ((SEEK_END == whence) ||
((SEEK_CUR == whence) && new_pos != 0))
{
errno = EINVAL;
ret = -1;
}
else
{
NormalSeek(new_pos);
ret = new_pos;
}
if (ret >= 0)
{
readpos = ret;
ignorereadpos = -1;
if (readaheadrunning)
ResetReadAhead(readpos);
readAdjust = 0;
}
else
{
QString cmd = QString("Seek(%1, %2)").arg(pos)
.arg((whence == SEEK_SET) ? "SEEK_SET" :
((whence == SEEK_CUR) ? "SEEK_CUR" : "SEEK_END"));
LOG(VB_GENERAL, LOG_ERR, LOC + cmd + " Failed" + ENO);
}
poslock.unlock();
generalWait.wakeAll();
if (!has_lock)
rwlock.unlock();
return ret;
}
long long DVDRingBuffer::NormalSeek(long long time)
{
QMutexLocker lock(&m_seekLock);
return Seek(time);
}
bool DVDRingBuffer::SectorSeek(uint64_t sector)
{
dvdnav_status_t dvdRet = DVDNAV_STATUS_OK;
QMutexLocker lock(&m_seekLock);
dvdRet = dvdnav_sector_search(m_dvdnav, sector, SEEK_SET);
if (dvdRet == DVDNAV_STATUS_ERR)
{
LOG(VB_PLAYBACK, LOG_ERR, LOC +
QString("SectorSeek() to sector %1 failed").arg(sector));
return false;
}
else
{
LOG(VB_PLAYBACK, LOG_DEBUG, LOC +
QString("DVD Playback SectorSeek() sector: %1").arg(sector));
return true;
}
}
long long DVDRingBuffer::Seek(long long time)
{
dvdnav_status_t dvdRet = DVDNAV_STATUS_OK;
int seekSpeed = 0;
int ffrewSkip = 1;
if (m_parent)
ffrewSkip = m_parent->GetFFRewSkip();
if (ffrewSkip != 1 && ffrewSkip != 0 && time != 0)
{
QMap<uint, uint>::const_iterator it = m_seekSpeedMap.lowerBound(labs(time));
if (it == m_seekSpeedMap.end())
seekSpeed = *(it - 1);
else
seekSpeed = *it;
if (time < 0)
seekSpeed = -seekSpeed;
dvdRet = dvdnav_relative_time_search(m_dvdnav, seekSpeed);
}
else
{
m_seektime = time;
dvdRet = dvdnav_absolute_time_search(m_dvdnav, (uint64_t)m_seektime, 0);
}
LOG(VB_PLAYBACK, LOG_DEBUG,
QString("DVD Playback Seek() time: %1; seekSpeed: %2")
.arg(time).arg(seekSpeed));
if (dvdRet == DVDNAV_STATUS_ERR)
{
LOG(VB_PLAYBACK, LOG_ERR, LOC +
QString("Seek() to time %1 failed").arg(time));
return -1;
}
else if (!m_inMenu)
{
m_gotStop = false;
if (time > 0 && ffrewSkip == 1)
m_seeking = true;
}
return m_currentpos;
}
bool DVDRingBuffer::IsBookmarkAllowed(void)
{
return GetTotalTimeOfTitle() >= 120;
}
void DVDRingBuffer::GetDescForPos(QString &desc)
{
if (m_inMenu)
{
if ((m_part <= DVD_MENU_MAX) && dvdnav_menu_table[m_part] )
{
desc = QCoreApplication::translate("(DVD menu)",
dvdnav_menu_table[m_part]);
}
}
else
{
desc = tr("Title %1 chapter %2").arg(m_title).arg(m_part);
}
}
bool DVDRingBuffer::OpenFile(const QString &lfilename, uint retry_ms)
{
QMutexLocker contextLocker(&m_contextLock);
rwlock.lockForWrite();
if (m_dvdnav)
{
rwlock.unlock();
CloseDVD();
rwlock.lockForWrite();
}
safefilename = lfilename;
filename = lfilename;
QByteArray fname = filename.toLocal8Bit();
dvdnav_status_t res = dvdnav_open(&m_dvdnav, fname.constData());
if (res == DVDNAV_STATUS_ERR)
{
lastError = tr("Failed to open DVD device at %1").arg(filename);
LOG(VB_GENERAL, LOG_ERR,
LOC + QString("Failed to open DVD device at %1")
.arg(fname.constData()));
rwlock.unlock();
return false;
}
LOG(VB_GENERAL, LOG_INFO, LOC + QString("Opened DVD device at %1")
.arg(fname.constData()));
if (m_context)
{
m_context->DecrRef();
m_context = NULL;
}
// Set preferred languages
QString lang = gCoreContext->GetSetting("Language").section('_', 0, 0);
dvdnav_menu_language_select(m_dvdnav, lang.toLatin1().data());
dvdnav_audio_language_select(m_dvdnav, lang.toLatin1().data());
dvdnav_spu_language_select(m_dvdnav, lang.toLatin1().data());
dvdnav_set_readahead_flag(m_dvdnav, 0);
dvdnav_set_PGC_positioning_flag(m_dvdnav, 1);
// Check we aren't starting in a still frame (which will probably fail as
// ffmpeg will be unable to create a decoder)
if (dvdnav_get_next_still_flag(m_dvdnav))
{
LOG(VB_GENERAL, LOG_NOTICE,
LOC + "The selected title is a still frame. "
"Playback is likely to fail - please raise a bug report at "
"http://code.mythtv.org/trac");
}
dvdnav_get_title_string(m_dvdnav, &m_dvdname);
dvdnav_get_serial_string(m_dvdnav, &m_serialnumber);
SetDVDSpeed();
LOG(VB_PLAYBACK, LOG_INFO, LOC +
QString("DVD Serial Number %1").arg(m_serialnumber));
readblocksize = DVD_BLOCK_SIZE * 62;
setswitchtonext = false;
ateof = false;
commserror = false;
numfailures = 0;
rawbitrate = 8000;
CalcReadAheadThresh();
rwlock.unlock();
return true;
}
bool DVDRingBuffer::StartFromBeginning(void)
{
LOG(VB_GENERAL, LOG_INFO, LOC + "Resetting DVD device.");
// if a DVDNAV_STOP event has been emitted, dvdnav_reset does not
// seem to restore the state, hence we need to re-create
if (m_gotStop)
{
LOG(VB_GENERAL, LOG_ERR, LOC +
"DVD errored after initial scan - trying again");
CloseDVD();
OpenFile(filename);
if (!m_dvdnav)
LOG(VB_GENERAL, LOG_ERR, LOC + "Failed to re-open DVD.");
}
if (m_dvdnav)
{
// Set preferred languages
QString lang = gCoreContext->GetSetting("Language").section('_', 0, 0);
LOG(VB_PLAYBACK, LOG_INFO, LOC + QString("Setting DVD languages to %1")
.arg(lang));
QMutexLocker lock(&m_seekLock);
dvdnav_reset(m_dvdnav);
dvdnav_menu_language_select(m_dvdnav, lang.toLatin1().data());
dvdnav_audio_language_select(m_dvdnav, lang.toLatin1().data());
dvdnav_spu_language_select(m_dvdnav, lang.toLatin1().data());
dvdnav_first_play(m_dvdnav);
m_audioStreamsChanged = true;
}
m_endPts = 0;
m_timeDiff = 0;
QMutexLocker contextLocker(&m_contextLock);
if (m_context)
{
m_context->DecrRef();
m_context = NULL;
}
return m_dvdnav;
}
void DVDRingBuffer::GetChapterTimes(QList<long long> ×)
{
if (!m_chapterMap.contains(m_title))
GetChapterTimes(m_title);
if (!m_chapterMap.contains(m_title))
return;
foreach (uint64_t chapter, m_chapterMap.value(m_title))
times.push_back(chapter);
}
uint64_t DVDRingBuffer::GetChapterTimes(uint title)
{
if (!m_dvdnav)
return 0;
uint64_t duration;
uint64_t *chaps;
uint32_t num = dvdnav_describe_title_chapters(m_dvdnav, title,
&chaps, &duration);
if (num < 1)
{
LOG(VB_GENERAL, LOG_ERR, LOC + "Failed to retrieve chapter data");
return 0;
}
QList<uint64_t> chapters;
// add the start
chapters.append(0);
// don't add the last 'chapter' - which is the title end
if (num > 1)
{
for (uint i = 0; i < num - 1; i++)
chapters.append((chaps[i] + 45000) / 90000);
}
// Assigned via calloc, must be free'd not deleted
if (chaps)
free(chaps);
m_chapterMap.insert(title, chapters);
return (duration + 45000) / 90000;
}
/** \brief returns current position in the PGC.
*/
long long DVDRingBuffer::GetReadPosition(void) const
{
uint32_t pos = 0;
uint32_t length = 1;
if (m_dvdnav)
{
if (dvdnav_get_position(m_dvdnav, &pos, &length) == DVDNAV_STATUS_ERR)
{
// try one more time
dvdnav_get_position(m_dvdnav, &pos, &length);
}
}
return pos * DVD_BLOCK_SIZE;
}
uint32_t DVDRingBuffer::AdjustTimestamp(uint32_t timestamp)
{
uint32_t newTimestamp = timestamp;
if (newTimestamp >= m_timeDiff)
{
newTimestamp -= m_timeDiff;
}
return newTimestamp;
}
int64_t DVDRingBuffer::AdjustTimestamp(int64_t timestamp)
{
int64_t newTimestamp = timestamp;
if (newTimestamp != AV_NOPTS_VALUE && newTimestamp >= m_timeDiff)
{
newTimestamp -= m_timeDiff;
}
return newTimestamp;
}
MythDVDContext *DVDRingBuffer::GetDVDContext(void)
{
QMutexLocker contextLocker(&m_contextLock);
if (m_context)
m_context->IncrRef();
return m_context;
}
void DVDRingBuffer::WaitForPlayer(void)
{
if (!m_skipstillorwait)
{
LOG(VB_PLAYBACK, LOG_INFO,
LOC + "Waiting for player's buffers to drain");
m_playerWait = true;
int count = 0;
while (m_playerWait && count++ < 200)
{
rwlock.unlock();
usleep(10000);
rwlock.lockForWrite();
}
if (m_playerWait)
{
LOG(VB_GENERAL, LOG_ERR, LOC + "Player wait state was not cleared");
m_playerWait = false;
}
}
}
int DVDRingBuffer::safe_read(void *data, uint sz)
{
unsigned char *blockBuf = NULL;
uint tot = 0;
int needed = sz;
char *dest = (char*) data;
int offset = 0;
bool bReprocessing = false;
bool stillSeen = false;
if (m_gotStop)
{
LOG(VB_GENERAL, LOG_ERR, LOC + "safe_read: called after DVDNAV_STOP");
errno = EBADF;
return -1;
}
if (readaheadrunning)
LOG(VB_GENERAL, LOG_ERR, LOC + "read ahead thread running.");
while ((m_processState != PROCESS_WAIT) && needed)
{
blockBuf = m_dvdBlockWriteBuf;
if (m_processState == PROCESS_REPROCESS)
{
m_processState = PROCESS_NORMAL;
bReprocessing = true;
}
else
{
m_dvdStat = dvdnav_get_next_cache_block(
m_dvdnav, &blockBuf, &m_dvdEvent, &m_dvdEventSize);
bReprocessing = false;
}
if (m_dvdStat == DVDNAV_STATUS_ERR)
{
LOG(VB_GENERAL, LOG_ERR, LOC + QString("Failed to read block: %1")
.arg(dvdnav_err_to_string(m_dvdnav)));
errno = EIO;
return -1;
}
switch (m_dvdEvent)
{
// Standard packet for decoding
case DVDNAV_BLOCK_OK:
{
// copy block
if (!m_seeking)
{
memcpy(dest + offset, blockBuf, DVD_BLOCK_SIZE);
tot += DVD_BLOCK_SIZE;
}
// release buffer
if (blockBuf != m_dvdBlockWriteBuf)
dvdnav_free_cache_block(m_dvdnav, blockBuf);
// debug
LOG(VB_PLAYBACK|VB_FILE, LOG_DEBUG, LOC + "DVDNAV_BLOCK_OK");
}
break;
// cell change
case DVDNAV_CELL_CHANGE:
{
// get event details
dvdnav_cell_change_event_t *cell_event =
(dvdnav_cell_change_event_t*) (blockBuf);
// update information for the current cell
m_cellChanged = true;
if (m_pgcLength != cell_event->pgc_length)
m_pgcLengthChanged = true;
m_pgLength = cell_event->pg_length;
m_pgcLength = cell_event->pgc_length;
m_cellStart = cell_event->cell_start;
m_pgStart = cell_event->pg_start;
// update title/part/still/menu information
m_lastTitle = m_title;
m_lastPart = m_part;
m_lastStill = m_still;
uint32_t pos;
uint32_t length;
uint32_t stillTimer = dvdnav_get_next_still_flag(m_dvdnav);
m_still = 0;
m_titleParts = 0;
dvdnav_current_title_info(m_dvdnav, &m_title, &m_part);
dvdnav_get_number_of_parts(m_dvdnav, m_title, &m_titleParts);
dvdnav_get_position(m_dvdnav, &pos, &length);
dvdnav_get_angle_info(m_dvdnav, &m_currentAngle, &m_currentTitleAngleCount);
if (m_title != m_lastTitle)
{
// Populate the chapter list for this title, used in the OSD menu
GetChapterTimes(m_title);
}
m_titleLength = length * DVD_BLOCK_SIZE;
if (!m_seeking)
m_cellstartPos = GetReadPosition();
// debug
LOG(VB_PLAYBACK, LOG_DEBUG, LOC +
QString("---- DVDNAV_CELL_CHANGE - Cell "
"#%1 Menu %2 Length %3")
.arg(cell_event->cellN).arg(m_inMenu ? "Yes" : "No")
.arg((float)cell_event->cell_length / 90000.0f,0,'f',1));
QString still = stillTimer ? ((stillTimer < 0xff) ?
QString("Stillframe: %1 seconds").arg(stillTimer) :
QString("Infinite stillframe")) :
QString("Length: %1 seconds")
.arg((float)m_pgcLength / 90000.0f, 0, 'f', 1);
if (m_title == 0)
{
LOG(VB_PLAYBACK, LOG_INFO, LOC + QString("Menu #%1 %2")
.arg(m_part).arg(still));
}
else
{
LOG(VB_PLAYBACK, LOG_INFO,
LOC + QString("Title #%1: %2 Part %3 of %4")
.arg(m_title).arg(still).arg(m_part).arg(m_titleParts));
}
// wait unless it is a transition from one normal video cell to
// another or the same menu id
if ((m_title != m_lastTitle) &&
!((m_title == 0 && m_lastTitle == 0) &&
(m_part == m_lastPart)))
{
WaitForPlayer();
}
// Make sure the still frame timer is reset.
if (m_parent)
{
m_parent->SetStillFrameTimeout(0);
}
// clear menus/still frame selections
m_lastvobid = m_vobid;
m_lastcellid = m_cellid;
m_lastButtonSeenInCell = m_buttonSeenInCell;
m_buttonSelected = false;
m_vobid = m_cellid = 0;
m_cellRepeated = false;
m_buttonSeenInCell = false;
IncrementButtonVersion;
// release buffer
if (blockBuf != m_dvdBlockWriteBuf)
dvdnav_free_cache_block(m_dvdnav, blockBuf);
}
break;
// new colour lookup table for subtitles/menu buttons
case DVDNAV_SPU_CLUT_CHANGE:
{
// debug
LOG(VB_PLAYBACK, LOG_DEBUG, LOC + "DVDNAV_SPU_CLUT_CHANGE");
// store the new clut
memcpy(m_clut, blockBuf, 16 * sizeof(uint32_t));
// release buffer
if (blockBuf != m_dvdBlockWriteBuf)
dvdnav_free_cache_block(m_dvdnav, blockBuf);
}
break;
// new Sub-picture Unit stream (subtitles/menu buttons)
case DVDNAV_SPU_STREAM_CHANGE:
{
// get event details
dvdnav_spu_stream_change_event_t* spu =
(dvdnav_spu_stream_change_event_t*)(blockBuf);
// clear any existing subs/buttons
IncrementButtonVersion;
// not sure
if (m_autoselectsubtitle)
m_curSubtitleTrack = dvdnav_get_active_spu_stream(m_dvdnav);
// debug
LOG(VB_PLAYBACK, LOG_DEBUG,
QString(LOC + "DVDNAV_SPU_STREAM_CHANGE: "
"physicalwide %1, physicalletterbox %2, "
"physicalpanscan %3, currenttrack %4")
.arg(spu->physical_wide).arg(spu->physical_letterbox)
.arg(spu->physical_pan_scan).arg(m_curSubtitleTrack));
// release buffer
if (blockBuf != m_dvdBlockWriteBuf)
dvdnav_free_cache_block(m_dvdnav, blockBuf);
}
break;
// the audio stream changed
case DVDNAV_AUDIO_STREAM_CHANGE:
{
// get event details
dvdnav_audio_stream_change_event_t* audio =
(dvdnav_audio_stream_change_event_t*)(blockBuf);
// retrieve the new track
int new_track = GetAudioTrackNum(audio->physical);
// debug
LOG(VB_PLAYBACK, LOG_DEBUG, LOC +
QString("DVDNAV_AUDIO_STREAM_CHANGE: old %1 new %2, physical %3, logical %4")
.arg(m_curAudioTrack).arg(new_track)
.arg(audio->physical).arg(audio->logical));
// tell the decoder to reset the audio streams if necessary
if (new_track != m_curAudioTrack)
{
m_curAudioTrack = new_track;
m_audioStreamsChanged = true;
}
// release buffer
if (blockBuf != m_dvdBlockWriteBuf)
dvdnav_free_cache_block(m_dvdnav, blockBuf);
}
break;
// navigation packet
case DVDNAV_NAV_PACKET:
{
QMutexLocker lock(&m_seekLock);
bool lastInMenu = m_inMenu;
// retrieve the latest Presentation Control and
// Data Search Information structures
pci_t *pci = dvdnav_get_current_nav_pci(m_dvdnav);
dsi_t *dsi = dvdnav_get_current_nav_dsi(m_dvdnav);
if (pci == 0 || dsi == 0)
{
// Something has gone horribly wrong if this happens
LOG(VB_GENERAL, LOG_ERR, LOC + QString("DVDNAV_NAV_PACKET - Error retrieving DVD data structures - dsi 0x%1, pci 0x%2")
.arg((uint64_t)dsi,0,16)
.arg((uint64_t)pci,0,16));
}
else
{
// If the start PTS of this block is not the
// same as the end PTS of the last block,
// we've got a timestamp discontinuity
int64_t diff = (int64_t)pci->pci_gi.vobu_s_ptm - m_endPts;
if (diff != 0)
{
if (!bReprocessing && !m_skipstillorwait)
{
LOG(VB_PLAYBACK, LOG_DEBUG, LOC + QString("PTS discontinuity - waiting for decoder: this %1, last %2, diff %3")
.arg(pci->pci_gi.vobu_s_ptm)
.arg(m_endPts)
.arg(diff));
m_processState = PROCESS_WAIT;
break;
}
m_timeDiff += diff;
}
m_endPts = pci->pci_gi.vobu_e_ptm;
m_inMenu = (pci->hli.hl_gi.btn_ns > 0);
if (m_inMenu && (dsi->synci.sp_synca[0] & 0x80000000) && !m_buttonExists)
{
LOG(VB_PLAYBACK, LOG_DEBUG, LOC + QString("Jumped into middle of menu: lba %1, dest %2")
.arg(pci->pci_gi.nv_pck_lbn)
.arg(pci->pci_gi.nv_pck_lbn - (dsi->synci.sp_synca[0] & 0x7fffffff)));
// We're in a menu, the subpicture packets are somewhere behind us
// and we've not decoded any subpicture.
// That probably means we've jumped into the middle of a menu.
// We'd better jump back to get the subpicture packet(s) otherwise
// there's no menu highlight to show.
m_seeking = false;
dvdnav_sector_search(m_dvdnav, pci->pci_gi.nv_pck_lbn - (dsi->synci.sp_synca[0] & 0x7fffffff), SEEK_SET);
}
else
{
pci_t pci_copy = *pci;
pci_copy.pci_gi.vobu_s_ptm = AdjustTimestamp(pci->pci_gi.vobu_s_ptm);
pci_copy.pci_gi.vobu_e_ptm = AdjustTimestamp(pci->pci_gi.vobu_e_ptm);
if (pci->pci_gi.vobu_se_e_ptm != 0)
pci_copy.pci_gi.vobu_se_e_ptm = AdjustTimestamp(pci->pci_gi.vobu_se_e_ptm);
QMutexLocker contextLocker(&m_contextLock);
if (m_context)
m_context->DecrRef();
m_context = new MythDVDContext(*dsi, pci_copy);
// get the latest nav
m_lastNav = (dvdnav_t *)blockBuf;
if (m_inMenu != lastInMenu)
{
if (m_inMenu)
{
m_autoselectsubtitle = true;
GetMythUI()->RestoreScreensaver();
}
else
GetMythUI()->DisableScreensaver();
}
// if we are in a looping menu, we don't want to reset the
// selected button when we restart
m_vobid = dsi->dsi_gi.vobu_vob_idn;
m_cellid = dsi->dsi_gi.vobu_c_idn;
if ((m_lastvobid == m_vobid) && (m_lastcellid == m_cellid)
&& m_lastButtonSeenInCell)
{
m_cellRepeated = true;
}
// update our status
m_currentTime = dvdnav_get_current_time(m_dvdnav);
m_currentpos = GetReadPosition();
if (m_seeking)
{
int relativetime =
(int)((m_seektime - m_currentTime)/ 90000);
if (abs(relativetime) <= 1)
{
m_seeking = false;
m_seektime = 0;
}