-
Notifications
You must be signed in to change notification settings - Fork 1
/
avconv.c
2475 lines (2120 loc) · 81 KB
/
avconv.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
/*
* avconv main
* Copyright (c) 2000-2011 The libav developers.
*
* This file is part of Libav.
*
* Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config.h"
#include <ctype.h>
#include <string.h>
#include <math.h>
#include <stdlib.h>
#include <errno.h>
#include <signal.h>
#include <limits.h>
#include "libavformat/avformat.h"
#include "libavdevice/avdevice.h"
#include "libswscale/swscale.h"
#include "libavresample/avresample.h"
#include "libavutil/opt.h"
#include "libavutil/audioconvert.h"
#include "libavutil/parseutils.h"
#include "libavutil/samplefmt.h"
#include "libavutil/colorspace.h"
#include "libavutil/fifo.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/dict.h"
#include "libavutil/mathematics.h"
#include "libavutil/pixdesc.h"
#include "libavutil/avstring.h"
#include "libavutil/libm.h"
#include "libavutil/imgutils.h"
#include "libavutil/time.h"
#include "libavformat/os_support.h"
# include "libavfilter/avfilter.h"
# include "libavfilter/avfiltergraph.h"
# include "libavfilter/buffersrc.h"
# include "libavfilter/buffersink.h"
#if HAVE_SYS_RESOURCE_H
#include <sys/types.h>
#include <sys/resource.h>
#elif HAVE_GETPROCESSTIMES
#include <windows.h>
#endif
#if HAVE_GETPROCESSMEMORYINFO
#include <windows.h>
#include <psapi.h>
#endif
#if HAVE_SYS_SELECT_H
#include <sys/select.h>
#endif
#if HAVE_PTHREADS
#include <pthread.h>
#endif
#include <time.h>
#include "avconv.h"
#include "cmdutils.h"
#include "libavutil/avassert.h"
const char program_name[] = "avconv";
const int program_birth_year = 2000;
static FILE *vstats_file;
static int64_t video_size = 0;
static int64_t audio_size = 0;
static int64_t extra_size = 0;
static int nb_frames_dup = 0;
static int nb_frames_drop = 0;
#if HAVE_PTHREADS
/* signal to input threads that they should exit; set by the main thread */
static int transcoding_finished;
#endif
#define DEFAULT_PASS_LOGFILENAME_PREFIX "av2pass"
InputStream **input_streams = NULL;
int nb_input_streams = 0;
InputFile **input_files = NULL;
int nb_input_files = 0;
OutputStream **output_streams = NULL;
int nb_output_streams = 0;
OutputFile **output_files = NULL;
int nb_output_files = 0;
FilterGraph **filtergraphs;
int nb_filtergraphs;
static void term_exit(void)
{
av_log(NULL, AV_LOG_QUIET, "");
}
static volatile int received_sigterm = 0;
static volatile int received_nb_signals = 0;
static void
sigterm_handler(int sig)
{
received_sigterm = sig;
received_nb_signals++;
term_exit();
}
static void term_init(void)
{
signal(SIGINT , sigterm_handler); /* Interrupt (ANSI). */
signal(SIGTERM, sigterm_handler); /* Termination (ANSI). */
#ifdef SIGXCPU
signal(SIGXCPU, sigterm_handler);
#endif
}
static int decode_interrupt_cb(void *ctx)
{
return received_nb_signals > 1;
}
const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
static void exit_program(void)
{
int i, j;
for (i = 0; i < nb_filtergraphs; i++) {
avfilter_graph_free(&filtergraphs[i]->graph);
for (j = 0; j < filtergraphs[i]->nb_inputs; j++) {
av_freep(&filtergraphs[i]->inputs[j]->name);
av_freep(&filtergraphs[i]->inputs[j]);
}
av_freep(&filtergraphs[i]->inputs);
for (j = 0; j < filtergraphs[i]->nb_outputs; j++) {
av_freep(&filtergraphs[i]->outputs[j]->name);
av_freep(&filtergraphs[i]->outputs[j]);
}
av_freep(&filtergraphs[i]->outputs);
av_freep(&filtergraphs[i]);
}
av_freep(&filtergraphs);
/* close files */
for (i = 0; i < nb_output_files; i++) {
AVFormatContext *s = output_files[i]->ctx;
if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
avio_close(s->pb);
avformat_free_context(s);
av_dict_free(&output_files[i]->opts);
av_freep(&output_files[i]);
}
for (i = 0; i < nb_output_streams; i++) {
AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
while (bsfc) {
AVBitStreamFilterContext *next = bsfc->next;
av_bitstream_filter_close(bsfc);
bsfc = next;
}
output_streams[i]->bitstream_filters = NULL;
avcodec_free_frame(&output_streams[i]->filtered_frame);
av_freep(&output_streams[i]->forced_keyframes);
av_freep(&output_streams[i]->avfilter);
av_freep(&output_streams[i]->logfile_prefix);
av_freep(&output_streams[i]);
}
for (i = 0; i < nb_input_files; i++) {
avformat_close_input(&input_files[i]->ctx);
av_freep(&input_files[i]);
}
for (i = 0; i < nb_input_streams; i++) {
avcodec_free_frame(&input_streams[i]->decoded_frame);
av_dict_free(&input_streams[i]->opts);
free_buffer_pool(&input_streams[i]->buffer_pool);
av_freep(&input_streams[i]->filters);
av_freep(&input_streams[i]);
}
if (vstats_file)
fclose(vstats_file);
av_free(vstats_filename);
av_freep(&input_streams);
av_freep(&input_files);
av_freep(&output_streams);
av_freep(&output_files);
uninit_opts();
avfilter_uninit();
avformat_network_deinit();
if (received_sigterm) {
av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
(int) received_sigterm);
exit (255);
}
}
void assert_avoptions(AVDictionary *m)
{
AVDictionaryEntry *t;
if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
exit(1);
}
}
static void assert_codec_experimental(AVCodecContext *c, int encoder)
{
const char *codec_string = encoder ? "encoder" : "decoder";
AVCodec *codec;
if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
"results.\nAdd '-strict experimental' if you want to use it.\n",
codec_string, c->codec->name);
codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
codec_string, codec->name);
exit(1);
}
}
/**
* Update the requested input sample format based on the output sample format.
* This is currently only used to request float output from decoders which
* support multiple sample formats, one of which is AV_SAMPLE_FMT_FLT.
* Ideally this will be removed in the future when decoders do not do format
* conversion and only output in their native format.
*/
static void update_sample_fmt(AVCodecContext *dec, AVCodec *dec_codec,
AVCodecContext *enc)
{
/* if sample formats match or a decoder sample format has already been
requested, just return */
if (enc->sample_fmt == dec->sample_fmt ||
dec->request_sample_fmt > AV_SAMPLE_FMT_NONE)
return;
/* if decoder supports more than one output format */
if (dec_codec && dec_codec->sample_fmts &&
dec_codec->sample_fmts[0] != AV_SAMPLE_FMT_NONE &&
dec_codec->sample_fmts[1] != AV_SAMPLE_FMT_NONE) {
const enum AVSampleFormat *p;
int min_dec = INT_MAX, min_inc = INT_MAX;
enum AVSampleFormat dec_fmt = AV_SAMPLE_FMT_NONE;
enum AVSampleFormat inc_fmt = AV_SAMPLE_FMT_NONE;
/* find a matching sample format in the encoder */
for (p = dec_codec->sample_fmts; *p != AV_SAMPLE_FMT_NONE; p++) {
if (*p == enc->sample_fmt) {
dec->request_sample_fmt = *p;
return;
} else {
enum AVSampleFormat dfmt = av_get_packed_sample_fmt(*p);
enum AVSampleFormat efmt = av_get_packed_sample_fmt(enc->sample_fmt);
int fmt_diff = 32 * abs(dfmt - efmt);
if (av_sample_fmt_is_planar(*p) !=
av_sample_fmt_is_planar(enc->sample_fmt))
fmt_diff++;
if (dfmt == efmt) {
min_inc = fmt_diff;
inc_fmt = *p;
} else if (dfmt > efmt) {
if (fmt_diff < min_inc) {
min_inc = fmt_diff;
inc_fmt = *p;
}
} else {
if (fmt_diff < min_dec) {
min_dec = fmt_diff;
dec_fmt = *p;
}
}
}
}
/* if none match, provide the one that matches quality closest */
dec->request_sample_fmt = min_inc != INT_MAX ? inc_fmt : dec_fmt;
}
}
static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
{
AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
AVCodecContext *avctx = ost->st->codec;
int ret;
/*
* Audio encoders may split the packets -- #frames in != #packets out.
* But there is no reordering, so we can limit the number of output packets
* by simply dropping them here.
* Counting encoded video frames needs to be done separately because of
* reordering, see do_video_out()
*/
if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
if (ost->frame_number >= ost->max_frames) {
av_free_packet(pkt);
return;
}
ost->frame_number++;
}
while (bsfc) {
AVPacket new_pkt = *pkt;
int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
&new_pkt.data, &new_pkt.size,
pkt->data, pkt->size,
pkt->flags & AV_PKT_FLAG_KEY);
if (a > 0) {
av_free_packet(pkt);
new_pkt.destruct = av_destruct_packet;
} else if (a < 0) {
av_log(NULL, AV_LOG_ERROR, "%s failed for stream %d, codec %s",
bsfc->filter->name, pkt->stream_index,
avctx->codec ? avctx->codec->name : "copy");
print_error("", a);
if (exit_on_error)
exit(1);
}
*pkt = new_pkt;
bsfc = bsfc->next;
}
pkt->stream_index = ost->index;
ret = av_interleaved_write_frame(s, pkt);
if (ret < 0) {
print_error("av_interleaved_write_frame()", ret);
exit(1);
}
}
static int check_recording_time(OutputStream *ost)
{
OutputFile *of = output_files[ost->file_index];
if (of->recording_time != INT64_MAX &&
av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
AV_TIME_BASE_Q) >= 0) {
ost->finished = 1;
return 0;
}
return 1;
}
static void do_audio_out(AVFormatContext *s, OutputStream *ost,
AVFrame *frame)
{
AVCodecContext *enc = ost->st->codec;
AVPacket pkt;
int got_packet = 0;
av_init_packet(&pkt);
pkt.data = NULL;
pkt.size = 0;
if (!check_recording_time(ost))
return;
if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
frame->pts = ost->sync_opts;
ost->sync_opts = frame->pts + frame->nb_samples;
if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
exit(1);
}
if (got_packet) {
if (pkt.pts != AV_NOPTS_VALUE)
pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
if (pkt.dts != AV_NOPTS_VALUE)
pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
if (pkt.duration > 0)
pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
write_frame(s, &pkt, ost);
audio_size += pkt.size;
}
}
static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
{
AVCodecContext *dec;
AVPicture *picture2;
AVPicture picture_tmp;
uint8_t *buf = 0;
dec = ist->st->codec;
/* deinterlace : must be done before any resize */
if (do_deinterlace) {
int size;
/* create temporary picture */
size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
buf = av_malloc(size);
if (!buf)
return;
picture2 = &picture_tmp;
avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
if (avpicture_deinterlace(picture2, picture,
dec->pix_fmt, dec->width, dec->height) < 0) {
/* if error, do not deinterlace */
av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
av_free(buf);
buf = NULL;
picture2 = picture;
}
} else {
picture2 = picture;
}
if (picture != picture2)
*picture = *picture2;
*bufp = buf;
}
static void do_subtitle_out(AVFormatContext *s,
OutputStream *ost,
InputStream *ist,
AVSubtitle *sub,
int64_t pts)
{
static uint8_t *subtitle_out = NULL;
int subtitle_out_max_size = 1024 * 1024;
int subtitle_out_size, nb, i;
AVCodecContext *enc;
AVPacket pkt;
if (pts == AV_NOPTS_VALUE) {
av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
if (exit_on_error)
exit(1);
return;
}
enc = ost->st->codec;
if (!subtitle_out) {
subtitle_out = av_malloc(subtitle_out_max_size);
}
/* Note: DVB subtitle need one packet to draw them and one other
packet to clear them */
/* XXX: signal it in the codec context ? */
if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
nb = 2;
else
nb = 1;
for (i = 0; i < nb; i++) {
ost->sync_opts = av_rescale_q(pts, ist->st->time_base, enc->time_base);
if (!check_recording_time(ost))
return;
sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
// start_display_time is required to be 0
sub->pts += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
sub->end_display_time -= sub->start_display_time;
sub->start_display_time = 0;
subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
subtitle_out_max_size, sub);
if (subtitle_out_size < 0) {
av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
exit(1);
}
av_init_packet(&pkt);
pkt.data = subtitle_out;
pkt.size = subtitle_out_size;
pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
/* XXX: the pts correction is handled here. Maybe handling
it in the codec would be better */
if (i == 0)
pkt.pts += 90 * sub->start_display_time;
else
pkt.pts += 90 * sub->end_display_time;
}
write_frame(s, &pkt, ost);
}
}
static void do_video_out(AVFormatContext *s,
OutputStream *ost,
AVFrame *in_picture,
int *frame_size, float quality)
{
int ret, format_video_sync;
AVPacket pkt;
AVCodecContext *enc = ost->st->codec;
*frame_size = 0;
format_video_sync = video_sync_method;
if (format_video_sync == VSYNC_AUTO)
format_video_sync = (s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH :
(s->oformat->flags & AVFMT_VARIABLE_FPS) ? VSYNC_VFR : VSYNC_CFR;
if (format_video_sync != VSYNC_PASSTHROUGH &&
ost->frame_number &&
in_picture->pts != AV_NOPTS_VALUE &&
in_picture->pts < ost->sync_opts) {
nb_frames_drop++;
av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
return;
}
if (in_picture->pts == AV_NOPTS_VALUE)
in_picture->pts = ost->sync_opts;
ost->sync_opts = in_picture->pts;
if (!ost->frame_number)
ost->first_pts = in_picture->pts;
av_init_packet(&pkt);
pkt.data = NULL;
pkt.size = 0;
if (!check_recording_time(ost) ||
ost->frame_number >= ost->max_frames)
return;
if (s->oformat->flags & AVFMT_RAWPICTURE &&
enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
/* raw pictures are written as AVPicture structure to
avoid any copies. We support temporarily the older
method. */
enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
enc->coded_frame->top_field_first = in_picture->top_field_first;
pkt.data = (uint8_t *)in_picture;
pkt.size = sizeof(AVPicture);
pkt.pts = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
pkt.flags |= AV_PKT_FLAG_KEY;
write_frame(s, &pkt, ost);
} else {
int got_packet;
AVFrame big_picture;
big_picture = *in_picture;
/* better than nothing: use input picture interlaced
settings */
big_picture.interlaced_frame = in_picture->interlaced_frame;
if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
if (ost->top_field_first == -1)
big_picture.top_field_first = in_picture->top_field_first;
else
big_picture.top_field_first = !!ost->top_field_first;
}
/* handles same_quant here. This is not correct because it may
not be a global option */
big_picture.quality = quality;
if (!enc->me_threshold)
big_picture.pict_type = 0;
if (ost->forced_kf_index < ost->forced_kf_count &&
big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
big_picture.pict_type = AV_PICTURE_TYPE_I;
ost->forced_kf_index++;
}
ret = avcodec_encode_video2(enc, &pkt, &big_picture, &got_packet);
if (ret < 0) {
av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
exit(1);
}
if (got_packet) {
if (pkt.pts != AV_NOPTS_VALUE)
pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
if (pkt.dts != AV_NOPTS_VALUE)
pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
write_frame(s, &pkt, ost);
*frame_size = pkt.size;
video_size += pkt.size;
/* if two pass, output log */
if (ost->logfile && enc->stats_out) {
fprintf(ost->logfile, "%s", enc->stats_out);
}
}
}
ost->sync_opts++;
/*
* For video, number of frames in == number of packets out.
* But there may be reordering, so we can't throw away frames on encoder
* flush, we need to limit them here, before they go into encoder.
*/
ost->frame_number++;
}
static double psnr(double d)
{
return -10.0 * log(d) / log(10.0);
}
static void do_video_stats(AVFormatContext *os, OutputStream *ost,
int frame_size)
{
AVCodecContext *enc;
int frame_number;
double ti1, bitrate, avg_bitrate;
/* this is executed just the first time do_video_stats is called */
if (!vstats_file) {
vstats_file = fopen(vstats_filename, "w");
if (!vstats_file) {
perror("fopen");
exit(1);
}
}
enc = ost->st->codec;
if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
frame_number = ost->frame_number;
fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
if (enc->flags&CODEC_FLAG_PSNR)
fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
fprintf(vstats_file,"f_size= %6d ", frame_size);
/* compute pts value */
ti1 = ost->sync_opts * av_q2d(enc->time_base);
if (ti1 < 0.01)
ti1 = 0.01;
bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
(double)video_size / 1024, ti1, bitrate, avg_bitrate);
fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
}
}
/**
* Read one frame for lavfi output for ost and encode it.
*/
static int poll_filter(OutputStream *ost)
{
OutputFile *of = output_files[ost->file_index];
AVFilterBufferRef *picref;
AVFrame *filtered_frame = NULL;
int frame_size, ret;
if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
return AVERROR(ENOMEM);
} else
avcodec_get_frame_defaults(ost->filtered_frame);
filtered_frame = ost->filtered_frame;
if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
!(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
ret = av_buffersink_read_samples(ost->filter->filter, &picref,
ost->st->codec->frame_size);
else
ret = av_buffersink_read(ost->filter->filter, &picref);
if (ret < 0)
return ret;
avfilter_copy_buf_props(filtered_frame, picref);
if (picref->pts != AV_NOPTS_VALUE) {
filtered_frame->pts = av_rescale_q(picref->pts,
ost->filter->filter->inputs[0]->time_base,
ost->st->codec->time_base) -
av_rescale_q(of->start_time,
AV_TIME_BASE_Q,
ost->st->codec->time_base);
if (of->start_time && filtered_frame->pts < 0) {
avfilter_unref_buffer(picref);
return 0;
}
}
switch (ost->filter->filter->inputs[0]->type) {
case AVMEDIA_TYPE_VIDEO:
if (!ost->frame_aspect_ratio)
ost->st->codec->sample_aspect_ratio = picref->video->pixel_aspect;
do_video_out(of->ctx, ost, filtered_frame, &frame_size,
same_quant ? ost->last_quality :
ost->st->codec->global_quality);
if (vstats_filename && frame_size)
do_video_stats(of->ctx, ost, frame_size);
break;
case AVMEDIA_TYPE_AUDIO:
do_audio_out(of->ctx, ost, filtered_frame);
break;
default:
// TODO support subtitle filters
av_assert0(0);
}
avfilter_unref_buffer(picref);
return 0;
}
/**
* Read as many frames from possible from lavfi and encode them.
*
* Always read from the active stream with the lowest timestamp. If no frames
* are available for it then return EAGAIN and wait for more input. This way we
* can use lavfi sources that generate unlimited amount of frames without memory
* usage exploding.
*/
static int poll_filters(void)
{
int i, j, ret = 0;
while (ret >= 0 && !received_sigterm) {
OutputStream *ost = NULL;
int64_t min_pts = INT64_MAX;
/* choose output stream with the lowest timestamp */
for (i = 0; i < nb_output_streams; i++) {
int64_t pts = output_streams[i]->sync_opts;
if (!output_streams[i]->filter || output_streams[i]->finished)
continue;
pts = av_rescale_q(pts, output_streams[i]->st->codec->time_base,
AV_TIME_BASE_Q);
if (pts < min_pts) {
min_pts = pts;
ost = output_streams[i];
}
}
if (!ost)
break;
ret = poll_filter(ost);
if (ret == AVERROR_EOF) {
OutputFile *of = output_files[ost->file_index];
ost->finished = 1;
if (of->shortest) {
for (j = 0; j < of->ctx->nb_streams; j++)
output_streams[of->ost_index + j]->finished = 1;
}
ret = 0;
} else if (ret == AVERROR(EAGAIN))
return 0;
}
return ret;
}
static void print_report(int is_last_report, int64_t timer_start)
{
char buf[1024];
OutputStream *ost;
AVFormatContext *oc;
int64_t total_size;
AVCodecContext *enc;
int frame_number, vid, i;
double bitrate, ti1, pts;
static int64_t last_time = -1;
static int qp_histogram[52];
if (!print_stats && !is_last_report)
return;
if (!is_last_report) {
int64_t cur_time;
/* display the report every 0.5 seconds */
cur_time = av_gettime();
if (last_time == -1) {
last_time = cur_time;
return;
}
if ((cur_time - last_time) < 500000)
return;
last_time = cur_time;
}
oc = output_files[0]->ctx;
total_size = avio_size(oc->pb);
if (total_size < 0) // FIXME improve avio_size() so it works with non seekable output too
total_size = avio_tell(oc->pb);
buf[0] = '\0';
ti1 = 1e10;
vid = 0;
for (i = 0; i < nb_output_streams; i++) {
float q = -1;
ost = output_streams[i];
enc = ost->st->codec;
if (!ost->stream_copy && enc->coded_frame)
q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
}
if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
float t = (av_gettime() - timer_start) / 1000000.0;
frame_number = ost->frame_number;
snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
frame_number, (t > 1) ? (int)(frame_number / t + 0.5) : 0, q);
if (is_last_report)
snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
if (qp_hist) {
int j;
int qp = lrintf(q);
if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
qp_histogram[qp]++;
for (j = 0; j < 32; j++)
snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
}
if (enc->flags&CODEC_FLAG_PSNR) {
int j;
double error, error_sum = 0;
double scale, scale_sum = 0;
char type[3] = { 'Y','U','V' };
snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
for (j = 0; j < 3; j++) {
if (is_last_report) {
error = enc->error[j];
scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
} else {
error = enc->coded_frame->error[j];
scale = enc->width * enc->height * 255.0 * 255.0;
}
if (j)
scale /= 4;
error_sum += error;
scale_sum += scale;
snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error / scale));
}
snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
}
vid = 1;
}
/* compute min output value */
pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
if ((pts < ti1) && (pts > 0))
ti1 = pts;
}
if (ti1 < 0.01)
ti1 = 0.01;
bitrate = (double)(total_size * 8) / ti1 / 1000.0;
snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
"size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
(double)total_size / 1024, ti1, bitrate);
if (nb_frames_dup || nb_frames_drop)
snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
nb_frames_dup, nb_frames_drop);
av_log(NULL, AV_LOG_INFO, "%s \r", buf);
fflush(stderr);
if (is_last_report) {
int64_t raw= audio_size + video_size + extra_size;
av_log(NULL, AV_LOG_INFO, "\n");
av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
video_size / 1024.0,
audio_size / 1024.0,
extra_size / 1024.0,
100.0 * (total_size - raw) / raw
);
}
}
static void flush_encoders(void)
{
int i, ret;
for (i = 0; i < nb_output_streams; i++) {
OutputStream *ost = output_streams[i];
AVCodecContext *enc = ost->st->codec;
AVFormatContext *os = output_files[ost->file_index]->ctx;
int stop_encoding = 0;
if (!ost->encoding_needed)
continue;
if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
continue;
if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
continue;
for (;;) {
int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
const char *desc;
int64_t *size;
switch (ost->st->codec->codec_type) {
case AVMEDIA_TYPE_AUDIO:
encode = avcodec_encode_audio2;
desc = "Audio";
size = &audio_size;
break;
case AVMEDIA_TYPE_VIDEO:
encode = avcodec_encode_video2;
desc = "Video";
size = &video_size;
break;
default:
stop_encoding = 1;
}
if (encode) {
AVPacket pkt;
int got_packet;
av_init_packet(&pkt);
pkt.data = NULL;
pkt.size = 0;
ret = encode(enc, &pkt, NULL, &got_packet);
if (ret < 0) {
av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
exit(1);
}
*size += ret;
if (ost->logfile && enc->stats_out) {
fprintf(ost->logfile, "%s", enc->stats_out);
}
if (!got_packet) {
stop_encoding = 1;
break;
}
if (pkt.pts != AV_NOPTS_VALUE)
pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
if (pkt.dts != AV_NOPTS_VALUE)
pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
write_frame(os, &pkt, ost);
}
if (stop_encoding)
break;
}
}
}
/*
* Check whether a packet from ist should be written into ost at this time
*/
static int check_output_constraints(InputStream *ist, OutputStream *ost)
{
OutputFile *of = output_files[ost->file_index];
int ist_index = input_files[ist->file_index]->ist_index + ist->st->index;
if (ost->source_index != ist_index)
return 0;
if (of->start_time && ist->last_dts < of->start_time)
return 0;
return 1;
}
static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
{
OutputFile *of = output_files[ost->file_index];
int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
AVPacket opkt;
av_init_packet(&opkt);