-
Notifications
You must be signed in to change notification settings - Fork 2.9k
/
encode_lavc.c
971 lines (821 loc) · 30.5 KB
/
encode_lavc.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
/*
* muxing using libavformat
*
* Copyright (C) 2010 Nicolas George <george@nsup.org>
* Copyright (C) 2011-2012 Rudolf Polzer <divVerent@xonotic.org>
*
* This file is part of mpv.
*
* mpv 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.
*
* mpv 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 mpv. If not, see <http://www.gnu.org/licenses/>.
*/
#include <libavutil/avutil.h>
#include <libavutil/timestamp.h>
#include "config.h"
#include "encode_lavc.h"
#include "common/av_common.h"
#include "common/global.h"
#include "common/msg.h"
#include "common/msg_control.h"
#include "options/m_config.h"
#include "options/m_option.h"
#include "options/options.h"
#include "osdep/timer.h"
#include "video/out/vo.h"
#include "mpv_talloc.h"
#include "stream/stream.h"
struct encode_priv {
struct mp_log *log;
// --- All fields are protected by encode_lavc_context.lock
bool failed;
struct mp_tags *metadata;
AVFormatContext *muxer;
bool header_written; // muxer was initialized
struct mux_stream **streams;
int num_streams;
// Statistics
double t0;
long long abytes;
long long vbytes;
unsigned int frames;
double audioseconds;
};
struct mux_stream {
int index; // index of this into p->streams[]
char name[80];
struct encode_lavc_context *ctx;
enum AVMediaType codec_type;
AVRational encoder_timebase; // packet timestamps from encoder
AVStream *st;
void (*on_ready)(void *ctx); // when finishing muxer init
void *on_ready_ctx;
};
#define OPT_BASE_STRUCT struct encode_opts
const struct m_sub_options encode_config = {
.opts = (const m_option_t[]) {
OPT_STRING("o", file, M_OPT_FIXED | CONF_NOCFG | CONF_PRE_PARSE | M_OPT_FILE),
OPT_STRING("of", format, M_OPT_FIXED),
OPT_KEYVALUELIST("ofopts", fopts, M_OPT_FIXED | M_OPT_HAVE_HELP),
OPT_STRING("ovc", vcodec, M_OPT_FIXED),
OPT_KEYVALUELIST("ovcopts", vopts, M_OPT_FIXED | M_OPT_HAVE_HELP),
OPT_STRING("oac", acodec, M_OPT_FIXED),
OPT_KEYVALUELIST("oacopts", aopts, M_OPT_FIXED | M_OPT_HAVE_HELP),
OPT_FLOATRANGE("ovoffset", voffset, M_OPT_FIXED, -1000000.0, 1000000.0,
.deprecation_message = "--audio-delay (once unbroken)"),
OPT_FLOATRANGE("oaoffset", aoffset, M_OPT_FIXED, -1000000.0, 1000000.0,
.deprecation_message = "--audio-delay (once unbroken)"),
OPT_FLAG("orawts", rawts, M_OPT_FIXED),
OPT_FLAG("ovfirst", video_first, M_OPT_FIXED,
.deprecation_message = "no replacement"),
OPT_FLAG("oafirst", audio_first, M_OPT_FIXED,
.deprecation_message = "no replacement"),
OPT_FLAG("ocopy-metadata", copy_metadata, M_OPT_FIXED),
OPT_KEYVALUELIST("oset-metadata", set_metadata, M_OPT_FIXED),
OPT_STRINGLIST("oremove-metadata", remove_metadata, M_OPT_FIXED),
OPT_REMOVED("ocopyts", "ocopyts is now the default"),
OPT_REMOVED("oneverdrop", "no replacement"),
OPT_REMOVED("oharddup", "use --vf-add=fps=VALUE"),
OPT_REMOVED("ofps", "no replacement (use --vf-add=fps=VALUE for CFR)"),
OPT_REMOVED("oautofps", "no replacement"),
OPT_REMOVED("omaxfps", "no replacement"),
{0}
},
.size = sizeof(struct encode_opts),
.defaults = &(const struct encode_opts){
.copy_metadata = 1,
},
};
struct encode_lavc_context *encode_lavc_init(struct mpv_global *global)
{
struct encode_lavc_context *ctx = talloc_ptrtype(NULL, ctx);
*ctx = (struct encode_lavc_context){
.global = global,
.options = mp_get_config_group(ctx, global, &encode_config),
.priv = talloc_zero(ctx, struct encode_priv),
.log = mp_log_new(ctx, global->log, "encode"),
};
pthread_mutex_init(&ctx->lock, NULL);
struct encode_priv *p = ctx->priv;
p->log = ctx->log;
const char *filename = ctx->options->file;
// STUPID STUPID STUPID STUPID avio
// does not support "-" as file name to mean stdin/stdout
// ffmpeg.c works around this too, the same way
if (!strcmp(filename, "-"))
filename = "pipe:1";
if (filename && (
!strcmp(filename, "/dev/stdout") ||
!strcmp(filename, "pipe:") ||
!strcmp(filename, "pipe:1")))
mp_msg_force_stderr(global, true);
encode_lavc_discontinuity(ctx);
p->muxer = avformat_alloc_context();
MP_HANDLE_OOM(p->muxer);
if (ctx->options->format && ctx->options->format[0]) {
ctx->oformat = av_guess_format(ctx->options->format, filename, NULL);
} else {
ctx->oformat = av_guess_format(NULL, filename, NULL);
}
if (!ctx->oformat) {
MP_FATAL(ctx, "format not found\n");
goto fail;
}
p->muxer->oformat = ctx->oformat;
p->muxer->url = av_strdup(filename);
MP_HANDLE_OOM(p->muxer->url);
return ctx;
fail:
p->failed = true;
encode_lavc_free(ctx);
return NULL;
}
void encode_lavc_set_metadata(struct encode_lavc_context *ctx,
struct mp_tags *metadata)
{
struct encode_priv *p = ctx->priv;
pthread_mutex_lock(&ctx->lock);
if (ctx->options->copy_metadata) {
p->metadata = mp_tags_dup(ctx, metadata);
} else {
p->metadata = talloc_zero(ctx, struct mp_tags);
}
if (ctx->options->set_metadata) {
char **kv = ctx->options->set_metadata;
// Set all user-provided metadata tags
for (int n = 0; kv[n * 2]; n++) {
MP_VERBOSE(ctx, "setting metadata value '%s' for key '%s'\n",
kv[n*2 + 0], kv[n*2 +1]);
mp_tags_set_str(p->metadata, kv[n*2 + 0], kv[n*2 +1]);
}
}
if (ctx->options->remove_metadata) {
char **k = ctx->options->remove_metadata;
// Remove all user-provided metadata tags
for (int n = 0; k[n]; n++) {
MP_VERBOSE(ctx, "removing metadata key '%s'\n", k[n]);
mp_tags_remove_str(p->metadata, k[n]);
}
}
pthread_mutex_unlock(&ctx->lock);
}
bool encode_lavc_free(struct encode_lavc_context *ctx)
{
bool res = true;
if (!ctx)
return res;
struct encode_priv *p = ctx->priv;
if (!p->failed && !p->header_written) {
MP_FATAL(p, "no data written to target file\n");
p->failed = true;
}
if (!p->failed && p->header_written) {
if (av_write_trailer(p->muxer) < 0)
MP_ERR(p, "error writing trailer\n");
MP_INFO(p, "video: encoded %lld bytes\n", p->vbytes);
MP_INFO(p, "audio: encoded %lld bytes\n", p->abytes);
MP_INFO(p, "muxing overhead %lld bytes\n",
(long long)(avio_size(p->muxer->pb) - p->vbytes - p->abytes));
}
if (avio_closep(&p->muxer->pb) < 0 && !p->failed) {
MP_ERR(p, "Closing file failed\n");
p->failed = true;
}
avformat_free_context(p->muxer);
res = !p->failed;
pthread_mutex_destroy(&ctx->lock);
talloc_free(ctx);
return res;
}
void encode_lavc_set_audio_pts(struct encode_lavc_context *ctx, double pts)
{
if (ctx) {
pthread_mutex_lock(&ctx->lock);
ctx->last_audio_in_pts = pts;
ctx->samples_since_last_pts = 0;
pthread_mutex_unlock(&ctx->lock);
}
}
// called locked
static void maybe_init_muxer(struct encode_lavc_context *ctx)
{
struct encode_priv *p = ctx->priv;
if (p->header_written || p->failed)
return;
// Check if all streams were initialized yet. We need data to know the
// AVStream parameters, so we wait for data from _all_ streams before
// starting.
for (int n = 0; n < p->num_streams; n++) {
if (!p->streams[n]->st)
return;
}
if (!(p->muxer->oformat->flags & AVFMT_NOFILE)) {
MP_INFO(p, "Opening output file: %s\n", p->muxer->url);
if (avio_open(&p->muxer->pb, p->muxer->url, AVIO_FLAG_WRITE) < 0) {
MP_FATAL(p, "could not open '%s'\n", p->muxer->url);
goto failed;
}
}
p->t0 = mp_time_sec();
MP_INFO(p, "Opening muxer: %s [%s]\n",
p->muxer->oformat->long_name, p->muxer->oformat->name);
if (p->metadata) {
for (int i = 0; i < p->metadata->num_keys; i++) {
av_dict_set(&p->muxer->metadata,
p->metadata->keys[i], p->metadata->values[i], 0);
}
}
AVDictionary *opts = NULL;
mp_set_avdict(&opts, ctx->options->fopts);
if (avformat_write_header(p->muxer, &opts) < 0) {
MP_FATAL(p, "Failed to initialize muxer.\n");
p->failed = true;
} else {
mp_avdict_print_unset(p->log, MSGL_WARN, opts);
}
av_dict_free(&opts);
if (p->failed)
goto failed;
p->header_written = true;
for (int n = 0; n < p->num_streams; n++) {
struct mux_stream *s = p->streams[n];
if (s->on_ready)
s->on_ready(s->on_ready_ctx);
}
return;
failed:
p->failed = true;
}
// called locked
static struct mux_stream *find_mux_stream(struct encode_lavc_context *ctx,
enum AVMediaType codec_type)
{
struct encode_priv *p = ctx->priv;
for (int n = 0; n < p->num_streams; n++) {
struct mux_stream *s = p->streams[n];
if (s->codec_type == codec_type)
return s;
}
return NULL;
}
void encode_lavc_expect_stream(struct encode_lavc_context *ctx,
enum stream_type type)
{
struct encode_priv *p = ctx->priv;
pthread_mutex_lock(&ctx->lock);
enum AVMediaType codec_type = mp_to_av_stream_type(type);
// These calls are idempotent.
if (find_mux_stream(ctx, codec_type))
goto done;
if (p->header_written) {
MP_ERR(p, "Cannot add a stream during encoding.\n");
p->failed = true;
goto done;
}
struct mux_stream *dst = talloc_ptrtype(p, dst);
*dst = (struct mux_stream){
.index = p->num_streams,
.ctx = ctx,
.codec_type = mp_to_av_stream_type(type),
};
snprintf(dst->name, sizeof(dst->name), "%s", stream_type_name(type));
MP_TARRAY_APPEND(p, p->streams, p->num_streams, dst);
done:
pthread_mutex_unlock(&ctx->lock);
}
void encode_lavc_stream_eof(struct encode_lavc_context *ctx,
enum stream_type type)
{
if (!ctx)
return;
struct encode_priv *p = ctx->priv;
pthread_mutex_lock(&ctx->lock);
enum AVMediaType codec_type = mp_to_av_stream_type(type);
struct mux_stream *dst = find_mux_stream(ctx, codec_type);
// If we've reached EOF, even though the stream was selected, and we didn't
// ever initialize it, we have a problem. We could mux some sort of dummy
// stream (and could fail if actual data arrives later), or we bail out
// early.
if (dst && !dst->st) {
MP_ERR(p, "No data on stream %s.\n", dst->name);
p->failed = true;
}
pthread_mutex_unlock(&ctx->lock);
}
// Signal that you are ready to encode (you provide the codec params etc. too).
// This returns a muxing handle which you can use to add encodec packets.
// Can be called only once per stream. info is copied by callee as needed.
static struct mux_stream *encode_lavc_add_stream(struct encode_lavc_context *ctx,
struct encoder_stream_info *info,
void (*on_ready)(void *ctx),
void *on_ready_ctx)
{
struct encode_priv *p = ctx->priv;
pthread_mutex_lock(&ctx->lock);
struct mux_stream *dst = find_mux_stream(ctx, info->codecpar->codec_type);
if (!dst) {
MP_ERR(p, "Cannot add a stream at runtime.\n");
p->failed = true;
goto done;
}
if (dst->st) {
// Possibly via --gapless-audio, or explicitly recreating AO/VO.
MP_ERR(p, "Encoder was reinitialized; this is not allowed.\n");
p->failed = true;
dst = NULL;
goto done;
}
dst->st = avformat_new_stream(p->muxer, NULL);
MP_HANDLE_OOM(dst->st);
dst->encoder_timebase = info->timebase;
dst->st->time_base = info->timebase; // lavf will change this on muxer init
if (avcodec_parameters_copy(dst->st->codecpar, info->codecpar) < 0)
MP_HANDLE_OOM(0);
dst->on_ready = on_ready;
dst->on_ready_ctx = on_ready_ctx;
maybe_init_muxer(ctx);
done:
pthread_mutex_unlock(&ctx->lock);
return dst;
}
// Write a packet. This will take over ownership of `pkt`
static void encode_lavc_add_packet(struct mux_stream *dst, AVPacket *pkt)
{
struct encode_lavc_context *ctx = dst->ctx;
struct encode_priv *p = ctx->priv;
assert(dst->st);
pthread_mutex_lock(&ctx->lock);
if (p->failed)
goto done;
if (!p->header_written) {
MP_ERR(p, "Encoder trying to write packet before muxer was initialized.\n");
p->failed = true;
goto done;
}
pkt->stream_index = dst->st->index;
assert(dst->st == p->muxer->streams[pkt->stream_index]);
av_packet_rescale_ts(pkt, dst->encoder_timebase, dst->st->time_base);
switch (dst->st->codecpar->codec_type) {
case AVMEDIA_TYPE_VIDEO:
p->vbytes += pkt->size;
p->frames += 1;
break;
case AVMEDIA_TYPE_AUDIO:
p->abytes += pkt->size;
p->audioseconds += pkt->duration
* (double)dst->st->time_base.num
/ (double)dst->st->time_base.den;
break;
}
if (av_interleaved_write_frame(p->muxer, pkt) < 0) {
MP_ERR(p, "Writing packet failed.\n");
p->failed = true;
}
pkt = NULL;
done:
pthread_mutex_unlock(&ctx->lock);
if (pkt)
av_packet_unref(pkt);
}
void encode_lavc_discontinuity(struct encode_lavc_context *ctx)
{
if (!ctx)
return;
pthread_mutex_lock(&ctx->lock);
ctx->audio_pts_offset = MP_NOPTS_VALUE;
ctx->discontinuity_pts_offset = MP_NOPTS_VALUE;
pthread_mutex_unlock(&ctx->lock);
}
static void encode_lavc_printoptions(struct mp_log *log, const void *obj,
const char *indent, const char *subindent,
const char *unit, int filter_and,
int filter_eq)
{
const AVOption *opt = NULL;
char optbuf[32];
while ((opt = av_opt_next(obj, opt))) {
// if flags are 0, it simply hasn't been filled in yet and may be
// potentially useful
if (opt->flags)
if ((opt->flags & filter_and) != filter_eq)
continue;
/* Don't print CONST's on level one.
* Don't print anything but CONST's on level two.
* Only print items from the requested unit.
*/
if (!unit && opt->type == AV_OPT_TYPE_CONST) {
continue;
} else if (unit && opt->type != AV_OPT_TYPE_CONST) {
continue;
} else if (unit && opt->type == AV_OPT_TYPE_CONST
&& strcmp(unit, opt->unit))
{
continue;
} else if (unit && opt->type == AV_OPT_TYPE_CONST) {
mp_info(log, "%s", subindent);
} else {
mp_info(log, "%s", indent);
}
switch (opt->type) {
case AV_OPT_TYPE_FLAGS:
snprintf(optbuf, sizeof(optbuf), "%s=<flags>", opt->name);
break;
case AV_OPT_TYPE_INT:
snprintf(optbuf, sizeof(optbuf), "%s=<int>", opt->name);
break;
case AV_OPT_TYPE_INT64:
snprintf(optbuf, sizeof(optbuf), "%s=<int64>", opt->name);
break;
case AV_OPT_TYPE_DOUBLE:
snprintf(optbuf, sizeof(optbuf), "%s=<double>", opt->name);
break;
case AV_OPT_TYPE_FLOAT:
snprintf(optbuf, sizeof(optbuf), "%s=<float>", opt->name);
break;
case AV_OPT_TYPE_STRING:
snprintf(optbuf, sizeof(optbuf), "%s=<string>", opt->name);
break;
case AV_OPT_TYPE_RATIONAL:
snprintf(optbuf, sizeof(optbuf), "%s=<rational>", opt->name);
break;
case AV_OPT_TYPE_BINARY:
snprintf(optbuf, sizeof(optbuf), "%s=<binary>", opt->name);
break;
case AV_OPT_TYPE_CONST:
snprintf(optbuf, sizeof(optbuf), " [+-]%s", opt->name);
break;
default:
snprintf(optbuf, sizeof(optbuf), "%s", opt->name);
break;
}
optbuf[sizeof(optbuf) - 1] = 0;
mp_info(log, "%-32s ", optbuf);
if (opt->help)
mp_info(log, " %s", opt->help);
mp_info(log, "\n");
if (opt->unit && opt->type != AV_OPT_TYPE_CONST)
encode_lavc_printoptions(log, obj, indent, subindent, opt->unit,
filter_and, filter_eq);
}
}
bool encode_lavc_showhelp(struct mp_log *log, struct encode_opts *opts)
{
bool help_output = false;
#define CHECKS(str) ((str) && \
strcmp((str), "help") == 0 ? (help_output |= 1) : 0)
#define CHECKV(strv) ((strv) && (strv)[0] && \
strcmp((strv)[0], "help") == 0 ? (help_output |= 1) : 0)
if (CHECKS(opts->format)) {
const AVOutputFormat *c = NULL;
void *iter = NULL;
mp_info(log, "Available output formats:\n");
while ((c = av_muxer_iterate(&iter))) {
mp_info(log, " --of=%-13s %s\n", c->name,
c->long_name ? c->long_name : "");
}
}
if (CHECKV(opts->fopts)) {
AVFormatContext *c = avformat_alloc_context();
const AVOutputFormat *format = NULL;
mp_info(log, "Available output format ctx->options:\n");
encode_lavc_printoptions(log, c, " --ofopts=", " ", NULL,
AV_OPT_FLAG_ENCODING_PARAM,
AV_OPT_FLAG_ENCODING_PARAM);
av_free(c);
void *iter = NULL;
while ((format = av_muxer_iterate(&iter))) {
if (format->priv_class) {
mp_info(log, "Additionally, for --of=%s:\n",
format->name);
encode_lavc_printoptions(log, &format->priv_class, " --ofopts=",
" ", NULL,
AV_OPT_FLAG_ENCODING_PARAM,
AV_OPT_FLAG_ENCODING_PARAM);
}
}
}
if (CHECKV(opts->vopts)) {
AVCodecContext *c = avcodec_alloc_context3(NULL);
const AVCodec *codec = NULL;
mp_info(log, "Available output video codec ctx->options:\n");
encode_lavc_printoptions(log,
c, " --ovcopts=", " ", NULL,
AV_OPT_FLAG_ENCODING_PARAM |
AV_OPT_FLAG_VIDEO_PARAM,
AV_OPT_FLAG_ENCODING_PARAM |
AV_OPT_FLAG_VIDEO_PARAM);
av_free(c);
void *iter = NULL;
while ((codec = av_codec_iterate(&iter))) {
if (!av_codec_is_encoder(codec))
continue;
if (codec->type != AVMEDIA_TYPE_VIDEO)
continue;
if (opts->vcodec && opts->vcodec[0] &&
strcmp(opts->vcodec, codec->name) != 0)
continue;
if (codec->priv_class) {
mp_info(log, "Additionally, for --ovc=%s:\n",
codec->name);
encode_lavc_printoptions(log,
&codec->priv_class, " --ovcopts=",
" ", NULL,
AV_OPT_FLAG_ENCODING_PARAM |
AV_OPT_FLAG_VIDEO_PARAM,
AV_OPT_FLAG_ENCODING_PARAM |
AV_OPT_FLAG_VIDEO_PARAM);
}
}
}
if (CHECKV(opts->aopts)) {
AVCodecContext *c = avcodec_alloc_context3(NULL);
const AVCodec *codec = NULL;
mp_info(log, "Available output audio codec ctx->options:\n");
encode_lavc_printoptions(log,
c, " --oacopts=", " ", NULL,
AV_OPT_FLAG_ENCODING_PARAM |
AV_OPT_FLAG_AUDIO_PARAM,
AV_OPT_FLAG_ENCODING_PARAM |
AV_OPT_FLAG_AUDIO_PARAM);
av_free(c);
void *iter = NULL;
while ((codec = av_codec_iterate(&iter))) {
if (!av_codec_is_encoder(codec))
continue;
if (codec->type != AVMEDIA_TYPE_AUDIO)
continue;
if (opts->acodec && opts->acodec[0] &&
strcmp(opts->acodec, codec->name) != 0)
continue;
if (codec->priv_class) {
mp_info(log, "Additionally, for --oac=%s:\n",
codec->name);
encode_lavc_printoptions(log,
&codec->priv_class, " --oacopts=",
" ", NULL,
AV_OPT_FLAG_ENCODING_PARAM |
AV_OPT_FLAG_AUDIO_PARAM,
AV_OPT_FLAG_ENCODING_PARAM |
AV_OPT_FLAG_AUDIO_PARAM);
}
}
}
if (CHECKS(opts->vcodec)) {
const AVCodec *c = NULL;
void *iter = NULL;
mp_info(log, "Available output video codecs:\n");
while ((c = av_codec_iterate(&iter))) {
if (!av_codec_is_encoder(c))
continue;
if (c->type != AVMEDIA_TYPE_VIDEO)
continue;
mp_info(log, " --ovc=%-12s %s\n", c->name,
c->long_name ? c->long_name : "");
}
}
if (CHECKS(opts->acodec)) {
const AVCodec *c = NULL;
void *iter = NULL;
mp_info(log, "Available output audio codecs:\n");
while ((c = av_codec_iterate(&iter))) {
if (!av_codec_is_encoder(c))
continue;
if (c->type != AVMEDIA_TYPE_AUDIO)
continue;
mp_info(log, " --oac=%-12s %s\n", c->name,
c->long_name ? c->long_name : "");
}
}
return help_output;
}
int encode_lavc_getstatus(struct encode_lavc_context *ctx,
char *buf, int bufsize,
float relative_position)
{
if (!ctx)
return -1;
struct encode_priv *p = ctx->priv;
double now = mp_time_sec();
float minutes, megabytes, fps, x;
float f = FFMAX(0.0001, relative_position);
pthread_mutex_lock(&ctx->lock);
if (p->failed) {
snprintf(buf, bufsize, "(failed)\n");
goto done;
}
minutes = (now - p->t0) / 60.0 * (1 - f) / f;
megabytes = p->muxer->pb ? (avio_size(p->muxer->pb) / 1048576.0 / f) : 0;
fps = p->frames / (now - p->t0);
x = p->audioseconds / (now - p->t0);
if (p->frames) {
snprintf(buf, bufsize, "{%.1fmin %.1ffps %.1fMB}",
minutes, fps, megabytes);
} else if (p->audioseconds) {
snprintf(buf, bufsize, "{%.1fmin %.2fx %.1fMB}",
minutes, x, megabytes);
} else {
snprintf(buf, bufsize, "{%.1fmin %.1fMB}",
minutes, megabytes);
}
buf[bufsize - 1] = 0;
done:
pthread_mutex_unlock(&ctx->lock);
return 0;
}
bool encode_lavc_didfail(struct encode_lavc_context *ctx)
{
if (!ctx)
return false;
pthread_mutex_lock(&ctx->lock);
bool fail = ctx->priv->failed;
pthread_mutex_unlock(&ctx->lock);
return fail;
}
static void encoder_destroy(void *ptr)
{
struct encoder_context *p = ptr;
avcodec_free_context(&p->encoder);
free_stream(p->twopass_bytebuffer);
}
struct encoder_context *encoder_context_alloc(struct encode_lavc_context *ctx,
enum stream_type type,
struct mp_log *log)
{
if (!ctx) {
mp_err(log, "the option --o (output file) must be specified\n");
return NULL;
}
struct encoder_context *p = talloc_ptrtype(NULL, p);
talloc_set_destructor(p, encoder_destroy);
*p = (struct encoder_context){
.global = ctx->global,
.options = ctx->options,
.oformat = ctx->oformat,
.type = type,
.log = log,
.encode_lavc_ctx = ctx,
};
char *codec_name = type == STREAM_VIDEO
? p->options->vcodec
: p->options->acodec;
enum AVMediaType codec_type = mp_to_av_stream_type(type);
const char *tname = stream_type_name(type);
AVCodec *codec;
if (codec_name&& codec_name[0]) {
codec = avcodec_find_encoder_by_name(codec_name);
} else {
codec = avcodec_find_encoder(av_guess_codec(p->oformat, NULL,
p->options->file, NULL,
codec_type));
}
if (!codec) {
MP_FATAL(p, "codec for %s not found\n", tname);
goto fail;
}
if (codec->type != codec_type) {
MP_FATAL(p, "codec for %s has wrong media type\n", tname);
goto fail;
}
p->encoder = avcodec_alloc_context3(codec);
MP_HANDLE_OOM(p->encoder);
return p;
fail:
talloc_free(p);
return NULL;
}
static void encoder_2pass_prepare(struct encoder_context *p)
{
char *filename = talloc_asprintf(NULL, "%s-%s-pass1.log",
p->options->file,
stream_type_name(p->type));
if (p->encoder->flags & AV_CODEC_FLAG_PASS2) {
MP_INFO(p, "Reading 2-pass log: %s\n", filename);
struct stream *s = stream_open(filename, p->global);
if (s) {
struct bstr content = stream_read_complete(s, p, 1000000000);
if (content.start) {
p->encoder->stats_in = content.start;
} else {
MP_WARN(p, "could not read '%s', "
"disabling 2-pass encoding at pass 1\n", filename);
}
free_stream(s);
} else {
MP_WARN(p, "could not open '%s', "
"disabling 2-pass encoding at pass 2\n", filename);
p->encoder->flags &= ~(unsigned)AV_CODEC_FLAG_PASS2;
}
}
if (p->encoder->flags & AV_CODEC_FLAG_PASS1) {
MP_INFO(p, "Writing to 2-pass log: %s\n", filename);
p->twopass_bytebuffer = open_output_stream(filename, p->global);
if (!p->twopass_bytebuffer) {
MP_WARN(p, "could not open '%s', "
"disabling 2-pass encoding at pass 1\n", filename);
p->encoder->flags &= ~(unsigned)AV_CODEC_FLAG_PASS1;
}
}
talloc_free(filename);
}
bool encoder_init_codec_and_muxer(struct encoder_context *p,
void (*on_ready)(void *ctx), void *ctx)
{
assert(!avcodec_is_open(p->encoder));
char **copts = p->type == STREAM_VIDEO
? p->options->vopts
: p->options->aopts;
// Set these now, so the code below can read back parsed settings from it.
mp_set_avopts(p->log, p->encoder, copts);
encoder_2pass_prepare(p);
if (p->oformat->flags & AVFMT_GLOBALHEADER)
p->encoder->flags |= AV_CODEC_FLAG_GLOBAL_HEADER;
MP_INFO(p, "Opening encoder: %s [%s]\n",
p->encoder->codec->long_name, p->encoder->codec->name);
if (p->encoder->codec->capabilities & AV_CODEC_CAP_EXPERIMENTAL) {
p->encoder->strict_std_compliance = FF_COMPLIANCE_EXPERIMENTAL;
MP_WARN(p, "\n\n"
" ********************************************\n"
" **** Experimental codec selected! ****\n"
" ********************************************\n\n"
"This means the output file may be broken or bad.\n"
"Possible reasons, problems, workarounds:\n"
"- Codec implementation in ffmpeg/libav is not finished yet.\n"
" Try updating ffmpeg or libav.\n"
"- Bad picture quality, blocks, blurriness.\n"
" Experiment with codec settings to maybe still get the\n"
" desired quality output at the expense of bitrate.\n"
"- Broken files.\n"
" May not work at all, or break with other software.\n"
"- Slow compression.\n"
" Bear with it.\n"
"- Crashes.\n"
" Happens. Try varying options to work around.\n"
"If none of this helps you, try another codec in place of %s.\n\n",
p->encoder->codec->name);
}
if (avcodec_open2(p->encoder, p->encoder->codec, NULL) < 0) {
MP_FATAL(p, "Could not initialize encoder.\n");
goto fail;
}
p->info.timebase = p->encoder->time_base; // (_not_ changed by enc. init)
p->info.codecpar = avcodec_parameters_alloc();
MP_HANDLE_OOM(p->info.codecpar);
if (avcodec_parameters_from_context(p->info.codecpar, p->encoder) < 0)
goto fail;
p->mux_stream = encode_lavc_add_stream(p->encode_lavc_ctx, &p->info,
on_ready, ctx);
if (!p->mux_stream)
goto fail;
return true;
fail:
avcodec_close(p->encoder);
return false;
}
bool encoder_encode(struct encoder_context *p, AVFrame *frame)
{
int status = avcodec_send_frame(p->encoder, frame);
if (status < 0) {
if (frame && status == AVERROR_EOF)
MP_ERR(p, "new data after sending EOF to encoder\n");
goto fail;
}
for (;;) {
AVPacket packet = {0};
av_init_packet(&packet);
status = avcodec_receive_packet(p->encoder, &packet);
if (status == AVERROR(EAGAIN))
break;
if (status < 0 && status != AVERROR_EOF)
goto fail;
if (p->twopass_bytebuffer && p->encoder->stats_out) {
stream_write_buffer(p->twopass_bytebuffer, p->encoder->stats_out,
strlen(p->encoder->stats_out));
}
if (status == AVERROR_EOF)
break;
encode_lavc_add_packet(p->mux_stream, &packet);
}
return true;
fail:
MP_ERR(p, "error encoding at %s\n",
frame ? av_ts2timestr(frame->pts, &p->encoder->time_base) : "EOF");
return false;
}
double encoder_get_offset(struct encoder_context *p)
{
switch (p->encoder->codec_type) {
case AVMEDIA_TYPE_VIDEO: return p->options->voffset;
case AVMEDIA_TYPE_AUDIO: return p->options->aoffset;
default: return 0;
}
}
// vim: ts=4 sw=4 et