-
Notifications
You must be signed in to change notification settings - Fork 342
/
avformatdecoder.cpp
4834 lines (4160 loc) · 150 KB
/
avformatdecoder.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 headers
#include <cassert>
#include <unistd.h>
#include <cmath>
#include <stdint.h>
// C++ headers
#include <algorithm>
#include <iostream>
using namespace std;
#include <QTextCodec>
// MythTV headers
#include "mythtvexp.h"
#include "mythconfig.h"
#include "avformatdecoder.h"
#include "privatedecoder.h"
#include "audiooutput.h"
#include "audiooutpututil.h"
#include "ringbuffer.h"
#include "mythplayer.h"
#include "remoteencoder.h"
#include "programinfo.h"
#include "mythcorecontext.h"
#include "mythdbcon.h"
#include "iso639.h"
#include "mpegtables.h"
#include "atscdescriptors.h"
#include "dvbdescriptors.h"
#include "cc608decoder.h"
#include "cc708decoder.h"
#include "teletextdecoder.h"
#include "subtitlereader.h"
#include "interactivetv.h"
#include "dvdringbuffer.h"
#include "bdringbuffer.h"
#include "videodisplayprofile.h"
#include "mythuihelper.h"
#include "lcddevice.h"
#include "videoout_quartz.h" // For VOQ::GetBestSupportedCodec()
#ifdef USING_VDPAU
#include "videoout_vdpau.h"
extern "C" {
#include "libavcodec/vdpau.h"
}
#endif // USING_VDPAU
#ifdef USING_DXVA2
#include "videoout_d3d.h"
#endif
#ifdef USING_VAAPI
#include "videoout_openglvaapi.h"
#include "vaapicontext.h"
#endif // USING_VAAPI
extern "C" {
#include "libavutil/avutil.h"
#include "libavcodec/ac3_parser.h"
extern const uint8_t *ff_find_start_code(const uint8_t *p, const uint8_t *end, uint32_t *state);
extern void ff_read_frame_flush(AVFormatContext *s);
#include "libavformat/avio.h"
#include "libswscale/swscale.h"
#include "ivtv_myth.h"
}
#ifdef _MSC_VER
// MSVC isn't C99 compliant...
# ifdef AV_TIME_BASE_Q
# undef AV_TIME_BASE_Q
# endif
#define AV_TIME_BASE_Q GetAVTimeBaseQ()
__inline AVRational GetAVTimeBaseQ()
{
AVRational av = {1, AV_TIME_BASE};
return av;
}
#endif
#define LOC QString("AFD: ")
#define MAX_AC3_FRAME_SIZE 6144
static const float eps = 1E-5;
static const int max_video_queue_size = 180;
static int cc608_parity(uint8_t byte);
static int cc608_good_parity(const int *parity_table, uint16_t data);
static void cc608_build_parity_table(int *parity_table);
static bool silence_ffmpeg_logging = false;
static QSize get_video_dim(const AVCodecContext &ctx)
{
return QSize(ctx.width >> ctx.lowres, ctx.height >> ctx.lowres);
}
static float get_aspect(const AVCodecContext &ctx)
{
float aspect_ratio = 0.0f;
if (ctx.sample_aspect_ratio.num && ctx.height)
{
aspect_ratio = av_q2d(ctx.sample_aspect_ratio) * (float) ctx.width;
aspect_ratio /= (float) ctx.height;
}
if (aspect_ratio <= 0.0f || aspect_ratio > 6.0f)
{
if (ctx.height)
aspect_ratio = (float)ctx.width / (float)ctx.height;
else
aspect_ratio = 4.0f / 3.0f;
}
return aspect_ratio;
}
int get_avf_buffer(struct AVCodecContext *c, AVFrame *pic);
void release_avf_buffer(struct AVCodecContext *c, AVFrame *pic);
int get_avf_buffer_vdpau(struct AVCodecContext *c, AVFrame *pic);
void release_avf_buffer_vdpau(struct AVCodecContext *c, AVFrame *pic);
void render_slice_vdpau(struct AVCodecContext *s, const AVFrame *src,
int offset[4], int y, int type, int height);
int get_avf_buffer_dxva2(struct AVCodecContext *c, AVFrame *pic);
int get_avf_buffer_vaapi(struct AVCodecContext *c, AVFrame *pic);
static AVCodec *find_vdpau_decoder(AVCodec *c, enum CodecID id)
{
AVCodec *codec = c;
while (codec)
{
if (codec->id == id && CODEC_IS_VDPAU(codec))
return codec;
codec = codec->next;
}
return c;
}
static void myth_av_log(void *ptr, int level, const char* fmt, va_list vl)
{
if (silence_ffmpeg_logging)
return;
if (VERBOSE_LEVEL_NONE)
return;
static QString full_line("");
static const int msg_len = 255;
static QMutex string_lock;
uint64_t verbose_mask = VB_GENERAL;
LogLevel_t verbose_level = LOG_DEBUG;
// determine mythtv debug level from av log level
switch (level)
{
case AV_LOG_PANIC:
verbose_level = LOG_EMERG;
break;
case AV_LOG_FATAL:
verbose_level = LOG_CRIT;
break;
case AV_LOG_ERROR:
verbose_level = LOG_ERR;
verbose_mask |= VB_LIBAV;
break;
case AV_LOG_DEBUG:
case AV_LOG_VERBOSE:
case AV_LOG_INFO:
verbose_level = LOG_DEBUG;
verbose_mask |= VB_LIBAV;
case AV_LOG_WARNING:
verbose_mask |= VB_LIBAV;
break;
default:
return;
}
if (!VERBOSE_LEVEL_CHECK(verbose_mask, verbose_level))
return;
string_lock.lock();
if (full_line.isEmpty() && ptr) {
AVClass* avc = *(AVClass**)ptr;
full_line.sprintf("[%s @ %p] ", avc->item_name(ptr), avc);
}
char str[msg_len+1];
int bytes = vsnprintf(str, msg_len+1, fmt, vl);
// check for truncated messages and fix them
if (bytes > msg_len)
{
LOG(VB_GENERAL, LOG_WARNING,
QString("Libav log output truncated %1 of %2 bytes written")
.arg(msg_len).arg(bytes));
str[msg_len-1] = '\n';
}
full_line += QString(str);
if (full_line.endsWith("\n"))
{
LOG(verbose_mask, verbose_level, full_line.trimmed());
full_line.truncate(0);
}
string_lock.unlock();
}
static int get_canonical_lang(const char *lang_cstr)
{
if (lang_cstr[0] == '\0' || lang_cstr[1] == '\0')
{
return iso639_str3_to_key("und");
}
else if (lang_cstr[2] == '\0')
{
QString tmp2 = lang_cstr;
QString tmp3 = iso639_str2_to_str3(tmp2);
int lang = iso639_str3_to_key(tmp3);
return iso639_key_to_canonical_key(lang);
}
else
{
int lang = iso639_str3_to_key(lang_cstr);
return iso639_key_to_canonical_key(lang);
}
}
void AvFormatDecoder::GetDecoders(render_opts &opts)
{
opts.decoders->append("ffmpeg");
(*opts.equiv_decoders)["ffmpeg"].append("nuppel");
(*opts.equiv_decoders)["ffmpeg"].append("dummy");
#ifdef USING_VDPAU
opts.decoders->append("vdpau");
(*opts.equiv_decoders)["vdpau"].append("dummy");
#endif
#ifdef USING_DXVA2
opts.decoders->append("dxva2");
(*opts.equiv_decoders)["dxva2"].append("dummy");
#endif
#ifdef USING_VAAPI
opts.decoders->append("vaapi");
(*opts.equiv_decoders)["vaapi"].append("dummy");
#endif
PrivateDecoder::GetDecoders(opts);
}
AvFormatDecoder::AvFormatDecoder(MythPlayer *parent,
const ProgramInfo &pginfo,
bool use_null_videoout,
bool allow_private_decode,
bool no_hardware_decode,
AVSpecialDecode special_decoding)
: DecoderBase(parent, pginfo),
private_dec(NULL),
is_db_ignored(gCoreContext->IsDatabaseIgnored()),
m_h264_parser(new H264Parser()),
ic(NULL),
frame_decoded(0), decoded_video_frame(NULL),
avfRingBuffer(NULL), sws_ctx(NULL),
directrendering(false),
no_dts_hack(false), dorewind(false),
gopset(false), seen_gop(false),
seq_count(0),
prevgoppos(0), gotVideoFrame(false),
hasVideo(false), needDummyVideoFrames(false),
skipaudio(false), allowedquit(false),
start_code_state(0xffffffff),
lastvpts(0), lastapts(0),
lastccptsu(0),
firstvpts(0), firstvptsinuse(false),
faulty_pts(0), faulty_dts(0),
last_pts_for_fault_detection(0),
last_dts_for_fault_detection(0),
pts_detected(false),
reordered_pts_detected(false),
pts_selected(true),
using_null_videoout(use_null_videoout),
video_codec_id(kCodec_NONE),
no_hardware_decoders(no_hardware_decode),
allow_private_decoders(allow_private_decode),
special_decode(special_decoding),
maxkeyframedist(-1),
// Closed Caption & Teletext decoders
ignore_scte(false),
invert_scte_field(0),
last_scte_field(0),
ccd608(new CC608Decoder(parent->GetCC608Reader())),
ccd708(new CC708Decoder(parent->GetCC708Reader())),
ttd(new TeletextDecoder(parent->GetTeletextReader())),
// Interactive TV
itv(NULL),
// Audio
audioSamples(NULL),
disable_passthru(false),
m_fps(0.0f),
codec_is_mpeg(false)
{
memset(¶ms, 0, sizeof(AVFormatParameters));
memset(&readcontext, 0, sizeof(readcontext));
memset(ccX08_in_pmt, 0, sizeof(ccX08_in_pmt));
memset(ccX08_in_tracks, 0, sizeof(ccX08_in_tracks));
// using preallocated AVFormatContext for our own ByteIOContext
params.prealloced_context = 1;
audioSamples = (short int *)av_mallocz(AVCODEC_MAX_AUDIO_FRAME_SIZE *
sizeof(int32_t));
ccd608->SetIgnoreTimecode(true);
bool debug = VERBOSE_LEVEL_CHECK(VB_LIBAV, LOG_ANY);
av_log_set_level((debug) ? AV_LOG_DEBUG : AV_LOG_ERROR);
av_log_set_callback(myth_av_log);
audioIn.sample_size = -32; // force SetupAudioStream to run once
itv = m_parent->GetInteractiveTV();
cc608_build_parity_table(cc608_parity_table);
if (gCoreContext->GetNumSetting("CCBackground", 0))
CC708Window::forceWhiteOnBlackText = true;
LOG(VB_PLAYBACK, LOG_DEBUG, LOC + QString("Special Decode Flags: 0x%1")
.arg(special_decode, 0, 16));
}
AvFormatDecoder::~AvFormatDecoder()
{
while (!storedPackets.isEmpty())
{
AVPacket *pkt = storedPackets.takeFirst();
av_free_packet(pkt);
delete pkt;
}
CloseContext();
delete ccd608;
delete ccd708;
delete ttd;
delete private_dec;
delete m_h264_parser;
sws_freeContext(sws_ctx);
av_freep((void *)&audioSamples);
if (avfRingBuffer)
delete avfRingBuffer;
if (LCD *lcd = LCD::Get())
{
lcd->setAudioFormatLEDs(AUDIO_AC3, false);
lcd->setVideoFormatLEDs(VIDEO_MPG, false);
lcd->setVariousLEDs(VARIOUS_HDTV, false);
lcd->setVariousLEDs(VARIOUS_SPDIF, false);
lcd->setSpeakerLEDs(SPEAKER_71, false); // should clear any and all speaker LEDs
}
}
void AvFormatDecoder::CloseCodecs()
{
if (ic)
{
for (uint i = 0; i < ic->nb_streams; i++)
{
QMutexLocker locker(avcodeclock);
AVStream *st = ic->streams[i];
if (st->codec->codec)
avcodec_close(st->codec);
}
}
}
void AvFormatDecoder::CloseContext()
{
if (ic)
{
CloseCodecs();
AVInputFormat *fmt = ic->iformat;
ic->iformat->flags |= AVFMT_NOFILE;
av_free(ic->pb->buffer);
av_free(ic->pb);
av_close_input_file(ic);
ic = NULL;
fmt->flags &= ~AVFMT_NOFILE;
}
delete private_dec;
private_dec = NULL;
m_h264_parser->Reset();
}
static int64_t lsb3full(int64_t lsb, int64_t base_ts, int lsb_bits)
{
int64_t mask = (lsb_bits < 64) ? (1LL<<lsb_bits)-1 : -1LL;
return ((lsb - base_ts)&mask);
}
int64_t AvFormatDecoder::NormalizeVideoTimecode(int64_t timecode)
{
int64_t start_pts = 0, pts;
AVStream *st = NULL;
for (uint i = 0; i < ic->nb_streams; i++)
{
AVStream *st1 = ic->streams[i];
if (st1 && st1->codec->codec_type == CODEC_TYPE_VIDEO)
{
st = st1;
break;
}
}
if (!st)
return false;
if (ic->start_time != (int64_t)AV_NOPTS_VALUE)
start_pts = av_rescale(ic->start_time,
st->time_base.den,
AV_TIME_BASE * (int64_t)st->time_base.num);
pts = av_rescale(timecode / 1000.0,
st->time_base.den,
st->time_base.num);
// adjust for start time and wrap
pts = lsb3full(pts, start_pts, st->pts_wrap_bits);
return (int64_t)(av_q2d(st->time_base) * pts * 1000);
}
int64_t AvFormatDecoder::NormalizeVideoTimecode(AVStream *st,
int64_t timecode)
{
int64_t start_pts = 0, pts;
if (ic->start_time != (int64_t)AV_NOPTS_VALUE)
start_pts = av_rescale(ic->start_time,
st->time_base.den,
AV_TIME_BASE * (int64_t)st->time_base.num);
pts = av_rescale(timecode / 1000.0,
st->time_base.den,
st->time_base.num);
// adjust for start time and wrap
pts = lsb3full(pts, start_pts, st->pts_wrap_bits);
return (int64_t)(av_q2d(st->time_base) * pts * 1000);
}
int AvFormatDecoder::GetNumChapters()
{
if (ic->nb_chapters > 1)
return ic->nb_chapters;
return 0;
}
void AvFormatDecoder::GetChapterTimes(QList<long long> ×)
{
int total = GetNumChapters();
if (!total)
return;
for (int i = 0; i < total; i++)
{
int num = ic->chapters[i]->time_base.num;
int den = ic->chapters[i]->time_base.den;
int64_t start = ic->chapters[i]->start;
long double total_secs = (long double)start * (long double)num /
(long double)den;
times.push_back((long long)total_secs);
}
}
int AvFormatDecoder::GetCurrentChapter(long long framesPlayed)
{
if (!GetNumChapters())
return 0;
for (int i = (ic->nb_chapters - 1); i > -1 ; i--)
{
int num = ic->chapters[i]->time_base.num;
int den = ic->chapters[i]->time_base.den;
int64_t start = ic->chapters[i]->start;
long double total_secs = (long double)start * (long double)num /
(long double)den;
long long framenum = (long long)(total_secs * fps);
if (framesPlayed >= framenum)
{
LOG(VB_PLAYBACK, LOG_INFO, LOC +
QString("GetCurrentChapter(selected chapter %1 framenum %2)")
.arg(i + 1).arg(framenum));
return i + 1;
}
}
return 0;
}
long long AvFormatDecoder::GetChapter(int chapter)
{
if (chapter < 1 || chapter > GetNumChapters())
return -1;
int num = ic->chapters[chapter - 1]->time_base.num;
int den = ic->chapters[chapter - 1]->time_base.den;
int64_t start = ic->chapters[chapter - 1]->start;
long double total_secs = (long double)start * (long double)num /
(long double)den;
long long framenum = (long long)(total_secs * fps);
LOG(VB_PLAYBACK, LOG_INFO, LOC + QString("GetChapter %1: framenum %2")
.arg(chapter).arg(framenum));
return framenum;
}
bool AvFormatDecoder::DoRewind(long long desiredFrame, bool discardFrames)
{
LOG(VB_PLAYBACK, LOG_INFO, LOC + QString("DoRewind(%1, %2 discard frames)")
.arg(desiredFrame).arg( discardFrames ? "do" : "don't" ));
if (recordingHasPositionMap || livetv)
return DecoderBase::DoRewind(desiredFrame, discardFrames);
dorewind = true;
// avformat-based seeking
return DoFastForward(desiredFrame, discardFrames);
}
bool AvFormatDecoder::DoFastForward(long long desiredFrame, bool discardFrames)
{
LOG(VB_PLAYBACK, LOG_INFO, LOC +
QString("DoFastForward(%1 (%2), %3 discard frames)")
.arg(desiredFrame).arg(framesPlayed)
.arg((discardFrames) ? "do" : "don't"));
if (recordingHasPositionMap || livetv)
return DecoderBase::DoFastForward(desiredFrame, discardFrames);
bool oldrawstate = getrawframes;
getrawframes = false;
AVStream *st = NULL;
for (uint i = 0; i < ic->nb_streams; i++)
{
AVStream *st1 = ic->streams[i];
if (st1 && st1->codec->codec_type == CODEC_TYPE_VIDEO)
{
st = st1;
break;
}
}
if (!st)
return false;
int seekDelta = desiredFrame - framesPlayed;
// avoid using av_frame_seek if we are seeking frame-by-frame when paused
if (seekDelta >= 0 && seekDelta < 2 && !dorewind && m_parent->GetPlaySpeed() == 0.0f)
{
SeekReset(framesPlayed, seekDelta, false, true);
m_parent->SetFramesPlayed(framesPlayed + 1);
return true;
}
long long ts = 0;
if (ic->start_time != (int64_t)AV_NOPTS_VALUE)
ts = ic->start_time;
// convert framenumber to normalized timestamp
long double seekts = desiredFrame * AV_TIME_BASE / fps;
ts += (long long)seekts;
bool exactseeks = DecoderBase::getExactSeeks();
int flags = (dorewind || exactseeks) ? AVSEEK_FLAG_BACKWARD : 0;
if (av_seek_frame(ic, -1, ts, flags) < 0)
{
LOG(VB_GENERAL, LOG_ERR, LOC +
QString("av_seek_frame(ic, -1, %1, 0) -- error").arg(ts));
return false;
}
int normalframes = 0;
if (st->cur_dts != (int64_t)AV_NOPTS_VALUE)
{
int64_t adj_cur_dts = st->cur_dts;
if (ic->start_time != (int64_t)AV_NOPTS_VALUE)
{
int64_t st1 = av_rescale(ic->start_time,
st->time_base.den,
AV_TIME_BASE * (int64_t)st->time_base.num);
adj_cur_dts = lsb3full(adj_cur_dts, st1, st->pts_wrap_bits);
}
int64_t adj_seek_dts = av_rescale(seekts,
st->time_base.den,
AV_TIME_BASE * (int64_t)st->time_base.num);
int64_t max_dts = (st->pts_wrap_bits < 64) ? (1LL<<st->pts_wrap_bits)-1 : -1LL;
// When seeking near the start of a stream the current dts is sometimes
// less than the start time which causes lsb3full to return adj_cur_dts
// close to the maximum dts value. If so, set adj_cur_dts to zero.
if (adj_seek_dts < max_dts / 64 && adj_cur_dts > max_dts / 2)
adj_cur_dts = 0;
long long newts = av_rescale(adj_cur_dts,
(int64_t)AV_TIME_BASE *
(int64_t)st->time_base.num,
st->time_base.den);
lastKey = (long long)((newts*(long double)fps)/AV_TIME_BASE);
framesPlayed = lastKey;
framesRead = lastKey;
normalframes = (exactseeks) ? desiredFrame - framesPlayed : 0;
normalframes = max(normalframes, 0);
no_dts_hack = false;
}
else
{
LOG(VB_GENERAL, LOG_INFO, LOC + "No DTS Seeking Hack!");
no_dts_hack = true;
framesPlayed = desiredFrame;
framesRead = desiredFrame;
normalframes = 0;
}
SeekReset(lastKey, normalframes, true, discardFrames);
if (discardFrames)
m_parent->SetFramesPlayed(framesPlayed + 1);
dorewind = false;
getrawframes = oldrawstate;
return true;
}
void AvFormatDecoder::SeekReset(long long newKey, uint skipFrames,
bool doflush, bool discardFrames)
{
if (ringBuffer->IsInDiscMenuOrStillFrame() || newKey == 0)
return;
LOG(VB_PLAYBACK, LOG_INFO, LOC +
QString("SeekReset(%1, %2, %3 flush, %4 discard)")
.arg(newKey).arg(skipFrames)
.arg((doflush) ? "do" : "don't")
.arg((discardFrames) ? "do" : "don't"));
DecoderBase::SeekReset(newKey, skipFrames, doflush, discardFrames);
if (doflush)
{
lastapts = 0;
lastvpts = 0;
lastccptsu = 0;
faulty_pts = faulty_dts = 0;
last_pts_for_fault_detection = 0;
last_dts_for_fault_detection = 0;
pts_detected = false;
reordered_pts_detected = false;
ff_read_frame_flush(ic);
// Only reset the internal state if we're using our seeking,
// not when using libavformat's seeking
if (recordingHasPositionMap || livetv)
{
ic->pb->pos = ringBuffer->GetReadPosition();
ic->pb->buf_ptr = ic->pb->buffer;
ic->pb->buf_end = ic->pb->buffer;
ic->pb->eof_reached = 0;
}
// Flush the avcodec buffers
LOG(VB_PLAYBACK, LOG_INFO, LOC + "SeekReset() flushing");
for (uint i = 0; i < ic->nb_streams; i++)
{
AVCodecContext *enc = ic->streams[i]->codec;
if (enc->codec)
avcodec_flush_buffers(enc);
}
if (private_dec)
private_dec->Reset();
}
// Discard all the queued up decoded frames
if (discardFrames)
m_parent->DiscardVideoFrames(doflush);
if (doflush)
{
// Free up the stored up packets
while (!storedPackets.isEmpty())
{
AVPacket *pkt = storedPackets.takeFirst();
av_free_packet(pkt);
delete pkt;
}
prevgoppos = 0;
gopset = false;
if (!ringBuffer->IsDVD())
{
if (!no_dts_hack)
{
framesPlayed = lastKey;
framesRead = lastKey;
}
no_dts_hack = false;
}
}
// Skip all the desired number of skipFrames
for (;skipFrames > 0 && !ateof; skipFrames--)
{
GetFrame(kDecodeVideo);
if (decoded_video_frame)
{
m_parent->DiscardVideoFrame(decoded_video_frame);
decoded_video_frame = NULL;
}
}
if (doflush)
{
firstvpts = 0;
firstvptsinuse = true;
}
}
void AvFormatDecoder::SetEof(bool eof)
{
if (!eof && ic && ic->pb)
{
LOG(VB_GENERAL, LOG_NOTICE, LOC +
QString("Resetting byte context eof (livetv %1 was eof %2)")
.arg(livetv).arg(ic->pb->eof_reached));
ic->pb->eof_reached = 0;
}
DecoderBase::SetEof(eof);
}
void AvFormatDecoder::Reset(bool reset_video_data, bool seek_reset,
bool reset_file)
{
LOG(VB_PLAYBACK, LOG_INFO, LOC +
QString("Reset: Video %1, Seek %2, File %3")
.arg(reset_video_data).arg(seek_reset).arg(reset_file));
if (seek_reset)
SeekReset(0, 0, true, false);
DecoderBase::Reset(reset_video_data, false, reset_file);
if (reset_video_data)
{
seen_gop = false;
seq_count = 0;
}
}
bool AvFormatDecoder::CanHandle(char testbuf[kDecoderProbeBufferSize],
const QString &filename, int testbufsize)
{
{
QMutexLocker locker(avcodeclock);
av_register_all();
}
AVProbeData probe;
QByteArray fname = filename.toAscii();
probe.filename = fname.constData();
probe.buf = (unsigned char *)testbuf;
probe.buf_size = testbufsize;
int score = AVPROBE_SCORE_MAX/4;
if (testbufsize + AVPROBE_PADDING_SIZE > kDecoderProbeBufferSize)
{
probe.buf_size = kDecoderProbeBufferSize - AVPROBE_PADDING_SIZE;
score = 0;
}
else if (testbufsize*2 >= kDecoderProbeBufferSize)
{
score--;
}
if (av_probe_input_format2(&probe, true, &score))
return true;
return false;
}
void AvFormatDecoder::InitByteContext(void)
{
int buf_size = ringBuffer->BestBufferSize();
int streamed = ringBuffer->IsStreamed();
LOG(VB_PLAYBACK, LOG_INFO, LOC + QString("Buffer size: %1, streamed %2")
.arg(buf_size).arg(streamed));
readcontext.prot = &AVF_RingBuffer_Protocol;
readcontext.flags = 0;
readcontext.is_streamed = streamed;
readcontext.max_packet_size = 0;
readcontext.priv_data = avfRingBuffer;
unsigned char* buffer = (unsigned char *)av_malloc(buf_size);
ic->pb = av_alloc_put_byte(buffer, buf_size, 0,
&readcontext,
AVF_Read_Packet,
AVF_Write_Packet,
AVF_Seek_Packet);
ic->pb->is_streamed = streamed;
}
extern "C" void HandleStreamChange(void* data)
{
AvFormatDecoder* decoder = (AvFormatDecoder*) data;
int cnt = decoder->ic->nb_streams;
LOG(VB_PLAYBACK, LOG_INFO, LOC +
QString("streams_changed 0x%1 -- stream count %2")
.arg((uint64_t)data,0,16).arg(cnt));
QMutexLocker locker(avcodeclock);
decoder->SeekReset(0, 0, true, true);
decoder->ScanStreams(false);
}
extern "C" void HandleDVDStreamChange(void* data)
{
AvFormatDecoder* decoder = (AvFormatDecoder*) data;
int cnt = decoder->ic->nb_streams;
LOG(VB_PLAYBACK, LOG_INFO, LOC +
QString("streams_changed 0x%1 -- stream count %2")
.arg((uint64_t)data,0,16).arg(cnt));
QMutexLocker locker(avcodeclock);
//decoder->SeekReset(0, 0, true, true);
decoder->ScanStreams(true);
}
extern "C" void HandleBDStreamChange(void* data)
{
AvFormatDecoder* decoder = (AvFormatDecoder*) data;
LOG(VB_PLAYBACK, LOG_INFO, LOC + "resetting");
QMutexLocker locker(avcodeclock);
decoder->Reset(true, false, false);
decoder->CloseCodecs();
decoder->FindStreamInfo();
decoder->ScanStreams(false);
}
int AvFormatDecoder::FindStreamInfo(void)
{
QMutexLocker lock(avcodeclock);
silence_ffmpeg_logging = true;
int retval = av_find_stream_info(ic);
silence_ffmpeg_logging = false;
return retval;
}
/**
* OpenFile opens a ringbuffer for playback.
*
* OpenFile deletes any existing context then use testbuf to
* guess at the stream type. It then calls ScanStreams to find
* any valid streams to decode. If possible a position map is
* also built for quick skipping.
*
* \param rbuffer pointer to a valid ringuffer.
* \param novideo if true then no video is sought in ScanSreams.
* \param testbuf this parameter is not used by AvFormatDecoder.
*/
int AvFormatDecoder::OpenFile(RingBuffer *rbuffer, bool novideo,
char testbuf[kDecoderProbeBufferSize],
int testbufsize)
{
CloseContext();
ringBuffer = rbuffer;
if (avfRingBuffer)
delete avfRingBuffer;
avfRingBuffer = new AVFRingBuffer(rbuffer);
AVInputFormat *fmt = NULL;
QString fnames = ringBuffer->GetFilename();
QByteArray fnamea = fnames.toAscii();
const char *filename = fnamea.constData();
AVProbeData probe;
probe.filename = filename;
probe.buf = (unsigned char *)testbuf;
if (testbufsize + AVPROBE_PADDING_SIZE <= kDecoderProbeBufferSize)
probe.buf_size = testbufsize;
else
probe.buf_size = kDecoderProbeBufferSize - AVPROBE_PADDING_SIZE;
fmt = av_probe_input_format(&probe, true);
if (!fmt)
{
LOG(VB_GENERAL, LOG_ERR, LOC +
QString("Probe failed for file: \"%1\".").arg(filename));
return -1;
}
fmt->flags |= AVFMT_NOFILE;
ic = avformat_alloc_context();
if (!ic)
{
LOG(VB_GENERAL, LOG_ERR, LOC + "Could not allocate format context.");
return -1;
}
InitByteContext();
int err = av_open_input_stream(&ic, ic->pb, filename, fmt, ¶ms);
if (err < 0)
{
LOG(VB_GENERAL, LOG_ERR, LOC +
QString("avformat err(%1) on av_open_input_file call.").arg(err));
return -1;
}
int ret = FindStreamInfo();
// Reset DVD/bluray ringbuffers
if (!ringBuffer->StartFromBeginning())
return -1;
ringBuffer->IgnoreWaitStates(false);
if (ret < 0)
{
LOG(VB_GENERAL, LOG_ERR, LOC + "Could not find codec parameters. " +
QString("file was \"%1\".").arg(filename));
av_close_input_file(ic);
ic = NULL;
return -1;
}
ic->streams_changed = HandleStreamChange;
if (ringBuffer->IsDVD())
ic->streams_changed = HandleDVDStreamChange;
else if (ringBuffer->IsBD())
ic->streams_changed = HandleBDStreamChange;
ic->stream_change_data = this;
fmt->flags &= ~AVFMT_NOFILE;
if (!livetv && !ringBuffer->IsDisc())
{
av_estimate_timings(ic, 0);
// generate timings based on the video stream to avoid bogus ffmpeg
// values for duration and bitrate
av_update_stream_timings_video(ic);
}
// Scan for the initial A/V streams
ret = ScanStreams(novideo);
if (-1 == ret)
return ret;
AutoSelectTracks(); // This is needed for transcoder
#ifdef USING_MHEG
{
int initialAudio = -1, initialVideo = -1;
if (itv || (itv = m_parent->GetInteractiveTV()))
itv->GetInitialStreams(initialAudio, initialVideo);
if (initialAudio >= 0)
SetAudioByComponentTag(initialAudio);
if (initialVideo >= 0)
SetVideoByComponentTag(initialVideo);
}