-
Notifications
You must be signed in to change notification settings - Fork 11.8k
/
ffmpeg.c
6343 lines (5520 loc) · 234 KB
/
ffmpeg.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
/*
* Copyright (c) 2000-2003 Fabrice Bellard
*
* This file is part of FFmpeg.
*
* FFmpeg 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.
*
* FFmpeg 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 FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* multimedia converter based on the FFmpeg libraries
*/
#include "config.h"
#include <ctype.h>
#include <string.h>
#include <math.h>
#include <stdlib.h>
#include <errno.h>
#include <signal.h>
#include <limits.h>
#if HAVE_ISATTY
#include <unistd.h>
#endif
#include "libavformat/avformat.h"
#include "libavdevice/avdevice.h"
#include "libswscale/swscale.h"
#include "libswresample/swresample.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/timestamp.h"
#include "libavutil/bprint.h"
#include "libavutil/time.h"
#include "libavformat/os_support.h"
#include "libavformat/ffm.h" // not public API
# include "libavfilter/avcodec.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_TERMIOS_H
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/time.h>
#include <termios.h>
#elif HAVE_KBHIT
#include <conio.h>
#endif
#if HAVE_PTHREADS
#include <pthread.h>
#endif
#include <time.h>
#include "cmdutils.h"
#include "libavutil/avassert.h"
#define VSYNC_AUTO -1
#define VSYNC_PASSTHROUGH 0
#define VSYNC_CFR 1
#define VSYNC_VFR 2
#define VSYNC_DROP 0xff
const char program_name[] = "ffmpeg";
const int program_birth_year = 2000;
/* select an input stream for an output stream */
typedef struct StreamMap {
int disabled; /** 1 is this mapping is disabled by a negative map */
int file_index;
int stream_index;
int sync_file_index;
int sync_stream_index;
char *linklabel; /** name of an output link, for mapping lavfi outputs */
} StreamMap;
typedef struct {
int file_idx, stream_idx, channel_idx; // input
int ofile_idx, ostream_idx; // output
} AudioChannelMap;
static const OptionDef *options;
#define MAX_STREAMS 1024 /* arbitrary sanity check value */
static int frame_bits_per_raw_sample = 0;
static int video_discard = 0;
static int same_quant = 0;
static int do_deinterlace = 0;
static int intra_dc_precision = 8;
static int qp_hist = 0;
static int intra_only = 0;
static const char *video_codec_name = NULL;
static const char *audio_codec_name = NULL;
static const char *subtitle_codec_name = NULL;
static int file_overwrite = 0;
static int no_file_overwrite = 0;
static int do_benchmark = 0;
static int do_benchmark_all = 0;
static int do_hex_dump = 0;
static int do_pkt_dump = 0;
static int do_psnr = 0;
static int do_pass = 0;
static const char *pass_logfilename_prefix;
static int video_sync_method = VSYNC_AUTO;
static int audio_sync_method = 0;
static float audio_drift_threshold = 0.1;
static int copy_ts = 0;
static int copy_tb = -1;
static int opt_shortest = 0;
static char *vstats_filename;
static FILE *vstats_file;
static int audio_volume = 256;
static int exit_on_error = 0;
static int stdin_interaction = 1;
static int run_as_daemon = 0;
static volatile int received_nb_signals = 0;
static int64_t video_size = 0;
static int64_t audio_size = 0;
static int64_t subtitle_size = 0;
static int64_t extra_size = 0;
static int nb_frames_dup = 0;
static int nb_frames_drop = 0;
static int input_sync;
static float dts_delta_threshold = 10;
static float dts_error_threshold = 3600*30;
static int print_stats = 1;
static int debug_ts = 0;
static int current_time;
static AVIOContext *progress_avio = NULL;
static uint8_t *subtitle_out;
#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 "ffmpeg2pass"
typedef struct InputFilter {
AVFilterContext *filter;
struct InputStream *ist;
struct FilterGraph *graph;
uint8_t *name;
} InputFilter;
typedef struct OutputFilter {
AVFilterContext *filter;
struct OutputStream *ost;
struct FilterGraph *graph;
uint8_t *name;
/* temporary storage until stream maps are processed */
AVFilterInOut *out_tmp;
} OutputFilter;
typedef struct FilterGraph {
int index;
const char *graph_desc;
AVFilterGraph *graph;
InputFilter **inputs;
int nb_inputs;
OutputFilter **outputs;
int nb_outputs;
} FilterGraph;
typedef struct InputStream {
int file_index;
AVStream *st;
int discard; /* true if stream data should be discarded */
int decoding_needed; /* true if the packets must be decoded in 'raw_fifo' */
AVCodec *dec;
AVFrame *decoded_frame;
int64_t start; /* time when read started */
/* predicted dts of the next packet read for this stream or (when there are
* several frames in a packet) of the next frame in current packet (in AV_TIME_BASE units) */
int64_t next_dts;
int64_t dts; ///< dts of the last packet read for this stream (in AV_TIME_BASE units)
int64_t next_pts; ///< synthetic pts for the next decode frame (in AV_TIME_BASE units)
int64_t pts; ///< current pts of the decoded frame (in AV_TIME_BASE units)
int wrap_correction_done;
double ts_scale;
int is_start; /* is 1 at the start and after a discontinuity */
int saw_first_ts;
int showed_multi_packet_warning;
AVDictionary *opts;
AVRational framerate; /* framerate forced with -r */
int top_field_first;
int resample_height;
int resample_width;
int resample_pix_fmt;
int resample_sample_fmt;
int resample_sample_rate;
int resample_channels;
uint64_t resample_channel_layout;
struct sub2video {
int64_t last_pts;
AVFilterBufferRef *ref;
int w, h;
} sub2video;
/* a pool of free buffers for decoded data */
FrameBuffer *buffer_pool;
int dr1;
/* decoded data from this stream goes into all those filters
* currently video and audio only */
InputFilter **filters;
int nb_filters;
} InputStream;
typedef struct InputFile {
AVFormatContext *ctx;
int eof_reached; /* true if eof reached */
int unavailable; /* true if the file is unavailable (possibly temporarily) */
int ist_index; /* index of first stream in input_streams */
int64_t ts_offset;
int nb_streams; /* number of stream that ffmpeg is aware of; may be different
from ctx.nb_streams if new streams appear during av_read_frame() */
int nb_streams_warn; /* number of streams that the user was warned of */
int rate_emu;
#if HAVE_PTHREADS
pthread_t thread; /* thread reading from this file */
int finished; /* the thread has exited */
int joined; /* the thread has been joined */
pthread_mutex_t fifo_lock; /* lock for access to fifo */
pthread_cond_t fifo_cond; /* the main thread will signal on this cond after reading from fifo */
AVFifoBuffer *fifo; /* demuxed packets are stored here; freed by the main thread */
#endif
} InputFile;
typedef struct OutputStream {
int file_index; /* file index */
int index; /* stream index in the output file */
int source_index; /* InputStream index */
AVStream *st; /* stream in the output file */
int encoding_needed; /* true if encoding needed for this stream */
int frame_number;
/* input pts and corresponding output pts
for A/V sync */
struct InputStream *sync_ist; /* input stream to sync against */
int64_t sync_opts; /* output frame counter, could be changed to some true timestamp */ // FIXME look at frame_number
/* pts of the first frame encoded for this stream, used for limiting
* recording time */
int64_t first_pts;
AVBitStreamFilterContext *bitstream_filters;
AVCodec *enc;
int64_t max_frames;
AVFrame *filtered_frame;
/* video only */
AVRational frame_rate;
int force_fps;
int top_field_first;
float frame_aspect_ratio;
float last_quality;
/* forced key frames */
int64_t *forced_kf_pts;
int forced_kf_count;
int forced_kf_index;
char *forced_keyframes;
/* audio only */
int audio_channels_map[SWR_CH_MAX]; /* list of the channels id to pick from the source stream */
int audio_channels_mapped; /* number of channels in audio_channels_map */
FILE *logfile;
OutputFilter *filter;
char *avfilter;
int64_t sws_flags;
int64_t swr_dither_method;
double swr_dither_scale;
AVDictionary *opts;
int is_past_recording_time;
int unavailable; /* true if the steram is unavailable (possibly temporarily) */
int stream_copy;
const char *attachment_filename;
int copy_initial_nonkeyframes;
int keep_pix_fmt;
} OutputStream;
#if HAVE_TERMIOS_H
/* init terminal so that we can grab keys */
static struct termios oldtty;
static int restore_tty;
#endif
typedef struct OutputFile {
AVFormatContext *ctx;
AVDictionary *opts;
int ost_index; /* index of the first stream in output_streams */
int64_t recording_time; ///< desired length of the resulting file in microseconds == AV_TIME_BASE units
int64_t start_time; ///< start time in microseconds == AV_TIME_BASE units
uint64_t limit_filesize; /* filesize limit expressed in bytes */
} OutputFile;
static InputStream **input_streams = NULL;
static int nb_input_streams = 0;
static InputFile **input_files = NULL;
static int nb_input_files = 0;
static OutputStream **output_streams = NULL;
static int nb_output_streams = 0;
static OutputFile **output_files = NULL;
static int nb_output_files = 0;
static FilterGraph **filtergraphs;
int nb_filtergraphs;
typedef struct OptionsContext {
/* input/output options */
int64_t start_time;
const char *format;
SpecifierOpt *codec_names;
int nb_codec_names;
SpecifierOpt *audio_channels;
int nb_audio_channels;
SpecifierOpt *audio_sample_rate;
int nb_audio_sample_rate;
SpecifierOpt *frame_rates;
int nb_frame_rates;
SpecifierOpt *frame_sizes;
int nb_frame_sizes;
SpecifierOpt *frame_pix_fmts;
int nb_frame_pix_fmts;
/* input options */
int64_t input_ts_offset;
int rate_emu;
SpecifierOpt *ts_scale;
int nb_ts_scale;
SpecifierOpt *dump_attachment;
int nb_dump_attachment;
/* output options */
StreamMap *stream_maps;
int nb_stream_maps;
AudioChannelMap *audio_channel_maps; /* one info entry per -map_channel */
int nb_audio_channel_maps; /* number of (valid) -map_channel settings */
int metadata_global_manual;
int metadata_streams_manual;
int metadata_chapters_manual;
const char **attachments;
int nb_attachments;
int chapters_input_file;
int64_t recording_time;
uint64_t limit_filesize;
float mux_preload;
float mux_max_delay;
int video_disable;
int audio_disable;
int subtitle_disable;
int data_disable;
/* indexed by output file stream index */
int *streamid_map;
int nb_streamid_map;
SpecifierOpt *metadata;
int nb_metadata;
SpecifierOpt *max_frames;
int nb_max_frames;
SpecifierOpt *bitstream_filters;
int nb_bitstream_filters;
SpecifierOpt *codec_tags;
int nb_codec_tags;
SpecifierOpt *sample_fmts;
int nb_sample_fmts;
SpecifierOpt *qscale;
int nb_qscale;
SpecifierOpt *forced_key_frames;
int nb_forced_key_frames;
SpecifierOpt *force_fps;
int nb_force_fps;
SpecifierOpt *frame_aspect_ratios;
int nb_frame_aspect_ratios;
SpecifierOpt *rc_overrides;
int nb_rc_overrides;
SpecifierOpt *intra_matrices;
int nb_intra_matrices;
SpecifierOpt *inter_matrices;
int nb_inter_matrices;
SpecifierOpt *top_field_first;
int nb_top_field_first;
SpecifierOpt *metadata_map;
int nb_metadata_map;
SpecifierOpt *presets;
int nb_presets;
SpecifierOpt *copy_initial_nonkeyframes;
int nb_copy_initial_nonkeyframes;
SpecifierOpt *filters;
int nb_filters;
} OptionsContext;
static void do_video_stats(AVFormatContext *os, OutputStream *ost, int frame_size);
#define MATCH_PER_STREAM_OPT(name, type, outvar, fmtctx, st)\
{\
int i, ret;\
for (i = 0; i < o->nb_ ## name; i++) {\
char *spec = o->name[i].specifier;\
if ((ret = check_stream_specifier(fmtctx, st, spec)) > 0)\
outvar = o->name[i].u.type;\
else if (ret < 0)\
exit_program(1);\
}\
}
static int64_t getutime(void)
{
#if HAVE_GETRUSAGE
struct rusage rusage;
getrusage(RUSAGE_SELF, &rusage);
return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
#elif HAVE_GETPROCESSTIMES
HANDLE proc;
FILETIME c, e, k, u;
proc = GetCurrentProcess();
GetProcessTimes(proc, &c, &e, &k, &u);
return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
#else
return av_gettime();
#endif
}
static void update_benchmark(const char *fmt, ...)
{
if (do_benchmark_all) {
int64_t t = getutime();
va_list va;
char buf[1024];
if (fmt) {
va_start(va, fmt);
vsnprintf(buf, sizeof(buf), fmt, va);
va_end(va);
printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
}
current_time = t;
}
}
/* sub2video hack:
Convert subtitles to video with alpha to insert them in filter graphs.
This is a temporary solution until libavfilter gets real subtitles support.
*/
static int sub2video_prepare(InputStream *ist)
{
AVFormatContext *avf = input_files[ist->file_index]->ctx;
int i, ret, w, h;
uint8_t *image[4];
int linesize[4];
/* Compute the size of the canvas for the subtitles stream.
If the subtitles codec has set a size, use it. Otherwise use the
maximum dimensions of the video streams in the same file. */
w = ist->st->codec->width;
h = ist->st->codec->height;
if (!(w && h)) {
for (i = 0; i < avf->nb_streams; i++) {
if (avf->streams[i]->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
w = FFMAX(w, avf->streams[i]->codec->width);
h = FFMAX(h, avf->streams[i]->codec->height);
}
}
if (!(w && h)) {
w = FFMAX(w, 720);
h = FFMAX(h, 576);
}
av_log(avf, AV_LOG_INFO, "sub2video: using %dx%d canvas\n", w, h);
}
ist->sub2video.w = ist->st->codec->width = w;
ist->sub2video.h = ist->st->codec->height = h;
/* rectangles are PIX_FMT_PAL8, but we have no guarantee that the
palettes for all rectangles are identical or compatible */
ist->st->codec->pix_fmt = PIX_FMT_RGB32;
ret = av_image_alloc(image, linesize, w, h, PIX_FMT_RGB32, 32);
if (ret < 0)
return ret;
memset(image[0], 0, h * linesize[0]);
ist->sub2video.ref = avfilter_get_video_buffer_ref_from_arrays(
image, linesize, AV_PERM_READ | AV_PERM_PRESERVE,
w, h, PIX_FMT_RGB32);
if (!ist->sub2video.ref) {
av_free(image[0]);
return AVERROR(ENOMEM);
}
return 0;
}
static void sub2video_copy_rect(uint8_t *dst, int dst_linesize, int w, int h,
AVSubtitleRect *r)
{
uint32_t *pal, *dst2;
uint8_t *src, *src2;
int x, y;
if (r->type != SUBTITLE_BITMAP) {
av_log(NULL, AV_LOG_WARNING, "sub2video: non-bitmap subtitle\n");
return;
}
if (r->x < 0 || r->x + r->w > w || r->y < 0 || r->y + r->h > h) {
av_log(NULL, AV_LOG_WARNING, "sub2video: rectangle overflowing\n");
return;
}
dst += r->y * dst_linesize + r->x * 4;
src = r->pict.data[0];
pal = (uint32_t *)r->pict.data[1];
for (y = 0; y < r->h; y++) {
dst2 = (uint32_t *)dst;
src2 = src;
for (x = 0; x < r->w; x++)
*(dst2++) = pal[*(src2++)];
dst += dst_linesize;
src += r->pict.linesize[0];
}
}
static void sub2video_push_ref(InputStream *ist, int64_t pts)
{
AVFilterBufferRef *ref = ist->sub2video.ref;
int i;
ist->sub2video.last_pts = ref->pts = pts;
for (i = 0; i < ist->nb_filters; i++)
av_buffersrc_add_ref(ist->filters[i]->filter,
avfilter_ref_buffer(ref, ~0),
AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT |
AV_BUFFERSRC_FLAG_NO_COPY);
}
static void sub2video_update(InputStream *ist, AVSubtitle *sub, int64_t pts)
{
int w = ist->sub2video.w, h = ist->sub2video.h;
AVFilterBufferRef *ref = ist->sub2video.ref;
int8_t *dst;
int dst_linesize;
int i;
if (!ref)
return;
dst = ref->data [0];
dst_linesize = ref->linesize[0];
memset(dst, 0, h * dst_linesize);
for (i = 0; i < sub->num_rects; i++)
sub2video_copy_rect(dst, dst_linesize, w, h, sub->rects[i]);
sub2video_push_ref(ist, pts);
}
static void sub2video_heartbeat(InputStream *ist, int64_t pts)
{
InputFile *infile = input_files[ist->file_index];
int i, j, nb_reqs;
int64_t pts2;
/* When a frame is read from a file, examine all sub2video streams in
the same file and send the sub2video frame again. Otherwise, decoded
video frames could be accumulating in the filter graph while a filter
(possibly overlay) is desperately waiting for a subtitle frame. */
for (i = 0; i < infile->nb_streams; i++) {
InputStream *ist2 = input_streams[infile->ist_index + i];
if (!ist2->sub2video.ref)
continue;
/* subtitles seem to be usually muxed ahead of other streams;
if not, substracting a larger time here is necessary */
pts2 = av_rescale_q(pts, ist->st->time_base, ist2->st->time_base) - 1;
/* do not send the heartbeat frame if the subtitle is already ahead */
if (pts2 <= ist2->sub2video.last_pts)
continue;
for (j = 0, nb_reqs = 0; j < ist2->nb_filters; j++)
nb_reqs += av_buffersrc_get_nb_failed_requests(ist2->filters[j]->filter);
if (nb_reqs)
sub2video_push_ref(ist2, pts2);
}
}
static void sub2video_flush(InputStream *ist)
{
int i;
for (i = 0; i < ist->nb_filters; i++)
av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
}
/* end of sub2video hack */
static void reset_options(OptionsContext *o, int is_input)
{
const OptionDef *po = options;
OptionsContext bak= *o;
int i;
/* all OPT_SPEC and OPT_STRING can be freed in generic way */
while (po->name) {
void *dst = (uint8_t*)o + po->u.off;
if (po->flags & OPT_SPEC) {
SpecifierOpt **so = dst;
int i, *count = (int*)(so + 1);
for (i = 0; i < *count; i++) {
av_freep(&(*so)[i].specifier);
if (po->flags & OPT_STRING)
av_freep(&(*so)[i].u.str);
}
av_freep(so);
*count = 0;
} else if (po->flags & OPT_OFFSET && po->flags & OPT_STRING)
av_freep(dst);
po++;
}
for (i = 0; i < o->nb_stream_maps; i++)
av_freep(&o->stream_maps[i].linklabel);
av_freep(&o->stream_maps);
av_freep(&o->audio_channel_maps);
av_freep(&o->streamid_map);
memset(o, 0, sizeof(*o));
if (is_input) {
o->recording_time = bak.recording_time;
if (o->recording_time != INT64_MAX)
av_log(NULL, AV_LOG_WARNING,
"-t is not an input option, keeping it for the next output;"
" consider fixing your command line.\n");
} else
o->recording_time = INT64_MAX;
o->mux_max_delay = 0.7;
o->limit_filesize = UINT64_MAX;
o->chapters_input_file = INT_MAX;
uninit_opts();
init_opts();
}
static enum PixelFormat choose_pixel_fmt(AVStream *st, AVCodec *codec, enum PixelFormat target)
{
if (codec && codec->pix_fmts) {
const enum PixelFormat *p = codec->pix_fmts;
int has_alpha= av_pix_fmt_descriptors[target].nb_components % 2 == 0;
enum PixelFormat best= PIX_FMT_NONE;
if (st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
if (st->codec->codec_id == CODEC_ID_MJPEG) {
p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE };
} else if (st->codec->codec_id == CODEC_ID_LJPEG) {
p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P,
PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE };
}
}
for (; *p != PIX_FMT_NONE; p++) {
best= avcodec_find_best_pix_fmt2(best, *p, target, has_alpha, NULL);
if (*p == target)
break;
}
if (*p == PIX_FMT_NONE) {
if (target != PIX_FMT_NONE)
av_log(NULL, AV_LOG_WARNING,
"Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
av_pix_fmt_descriptors[target].name,
codec->name,
av_pix_fmt_descriptors[best].name);
return best;
}
}
return target;
}
static char *choose_pix_fmts(OutputStream *ost)
{
if (ost->keep_pix_fmt) {
if (ost->filter)
avfilter_graph_set_auto_convert(ost->filter->graph->graph,
AVFILTER_AUTO_CONVERT_NONE);
if (ost->st->codec->pix_fmt == PIX_FMT_NONE)
return NULL;
return av_strdup(av_get_pix_fmt_name(ost->st->codec->pix_fmt));
}
if (ost->st->codec->pix_fmt != PIX_FMT_NONE) {
return av_strdup(av_get_pix_fmt_name(choose_pixel_fmt(ost->st, ost->enc, ost->st->codec->pix_fmt)));
} else if (ost->enc && ost->enc->pix_fmts) {
const enum PixelFormat *p;
AVIOContext *s = NULL;
uint8_t *ret;
int len;
if (avio_open_dyn_buf(&s) < 0)
exit_program(1);
p = ost->enc->pix_fmts;
if (ost->st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
if (ost->st->codec->codec_id == CODEC_ID_MJPEG) {
p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE };
} else if (ost->st->codec->codec_id == CODEC_ID_LJPEG) {
p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P,
PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE };
}
}
for (; *p != PIX_FMT_NONE; p++) {
const char *name = av_get_pix_fmt_name(*p);
avio_printf(s, "%s:", name);
}
len = avio_close_dyn_buf(s, &ret);
ret[len - 1] = 0;
return ret;
} else
return NULL;
}
/**
* Define a function for building a string containing a list of
* allowed formats,
*/
#define DEF_CHOOSE_FORMAT(type, var, supported_list, none, get_name, separator) \
static char *choose_ ## var ## s(OutputStream *ost) \
{ \
if (ost->st->codec->var != none) { \
get_name(ost->st->codec->var); \
return av_strdup(name); \
} else if (ost->enc->supported_list) { \
const type *p; \
AVIOContext *s = NULL; \
uint8_t *ret; \
int len; \
\
if (avio_open_dyn_buf(&s) < 0) \
exit_program(1); \
\
for (p = ost->enc->supported_list; *p != none; p++) { \
get_name(*p); \
avio_printf(s, "%s" separator, name); \
} \
len = avio_close_dyn_buf(s, &ret); \
ret[len - 1] = 0; \
return ret; \
} else \
return NULL; \
}
#define GET_PIX_FMT_NAME(pix_fmt)\
const char *name = av_get_pix_fmt_name(pix_fmt);
// DEF_CHOOSE_FORMAT(enum PixelFormat, pix_fmt, pix_fmts, PIX_FMT_NONE,
// GET_PIX_FMT_NAME, ":")
#define GET_SAMPLE_FMT_NAME(sample_fmt)\
const char *name = av_get_sample_fmt_name(sample_fmt)
DEF_CHOOSE_FORMAT(enum AVSampleFormat, sample_fmt, sample_fmts,
AV_SAMPLE_FMT_NONE, GET_SAMPLE_FMT_NAME, ",")
#define GET_SAMPLE_RATE_NAME(rate)\
char name[16];\
snprintf(name, sizeof(name), "%d", rate);
DEF_CHOOSE_FORMAT(int, sample_rate, supported_samplerates, 0,
GET_SAMPLE_RATE_NAME, ",")
#define GET_CH_LAYOUT_NAME(ch_layout)\
char name[16];\
snprintf(name, sizeof(name), "0x%"PRIx64, ch_layout);
DEF_CHOOSE_FORMAT(uint64_t, channel_layout, channel_layouts, 0,
GET_CH_LAYOUT_NAME, ",")
static FilterGraph *init_simple_filtergraph(InputStream *ist, OutputStream *ost)
{
FilterGraph *fg = av_mallocz(sizeof(*fg));
if (!fg)
exit_program(1);
fg->index = nb_filtergraphs;
fg->outputs = grow_array(fg->outputs, sizeof(*fg->outputs), &fg->nb_outputs,
fg->nb_outputs + 1);
if (!(fg->outputs[0] = av_mallocz(sizeof(*fg->outputs[0]))))
exit_program(1);
fg->outputs[0]->ost = ost;
fg->outputs[0]->graph = fg;
ost->filter = fg->outputs[0];
fg->inputs = grow_array(fg->inputs, sizeof(*fg->inputs), &fg->nb_inputs,
fg->nb_inputs + 1);
if (!(fg->inputs[0] = av_mallocz(sizeof(*fg->inputs[0]))))
exit_program(1);
fg->inputs[0]->ist = ist;
fg->inputs[0]->graph = fg;
ist->filters = grow_array(ist->filters, sizeof(*ist->filters),
&ist->nb_filters, ist->nb_filters + 1);
ist->filters[ist->nb_filters - 1] = fg->inputs[0];
filtergraphs = grow_array(filtergraphs, sizeof(*filtergraphs),
&nb_filtergraphs, nb_filtergraphs + 1);
filtergraphs[nb_filtergraphs - 1] = fg;
return fg;
}
static void init_input_filter(FilterGraph *fg, AVFilterInOut *in)
{
InputStream *ist = NULL;
enum AVMediaType type = avfilter_pad_get_type(in->filter_ctx->input_pads, in->pad_idx);
int i;
// TODO: support other filter types
if (type != AVMEDIA_TYPE_VIDEO && type != AVMEDIA_TYPE_AUDIO) {
av_log(NULL, AV_LOG_FATAL, "Only video and audio filters supported "
"currently.\n");
exit_program(1);
}
if (in->name) {
AVFormatContext *s;
AVStream *st = NULL;
char *p;
int file_idx = strtol(in->name, &p, 0);
if (file_idx < 0 || file_idx >= nb_input_files) {
av_log(NULL, AV_LOG_FATAL, "Invalid file index %d in filtergraph description %s.\n",
file_idx, fg->graph_desc);
exit_program(1);
}
s = input_files[file_idx]->ctx;
for (i = 0; i < s->nb_streams; i++) {
enum AVMediaType stream_type = s->streams[i]->codec->codec_type;
if (stream_type != type &&
!(stream_type == AVMEDIA_TYPE_SUBTITLE &&
type == AVMEDIA_TYPE_VIDEO /* sub2video hack */))
continue;
if (check_stream_specifier(s, s->streams[i], *p == ':' ? p + 1 : p) == 1) {
st = s->streams[i];
break;
}
}
if (!st) {
av_log(NULL, AV_LOG_FATAL, "Stream specifier '%s' in filtergraph description %s "
"matches no streams.\n", p, fg->graph_desc);
exit_program(1);
}
ist = input_streams[input_files[file_idx]->ist_index + st->index];
} else {
/* find the first unused stream of corresponding type */
for (i = 0; i < nb_input_streams; i++) {
ist = input_streams[i];
if (ist->st->codec->codec_type == type && ist->discard)
break;
}
if (i == nb_input_streams) {
av_log(NULL, AV_LOG_FATAL, "Cannot find a matching stream for "
"unlabeled input pad %d on filter %s\n", in->pad_idx,
in->filter_ctx->name);
exit_program(1);
}
}
av_assert0(ist);
ist->discard = 0;
ist->decoding_needed = 1;
ist->st->discard = AVDISCARD_NONE;
fg->inputs = grow_array(fg->inputs, sizeof(*fg->inputs),
&fg->nb_inputs, fg->nb_inputs + 1);
if (!(fg->inputs[fg->nb_inputs - 1] = av_mallocz(sizeof(*fg->inputs[0]))))
exit_program(1);
fg->inputs[fg->nb_inputs - 1]->ist = ist;
fg->inputs[fg->nb_inputs - 1]->graph = fg;
ist->filters = grow_array(ist->filters, sizeof(*ist->filters),
&ist->nb_filters, ist->nb_filters + 1);
ist->filters[ist->nb_filters - 1] = fg->inputs[fg->nb_inputs - 1];
}
static int configure_output_video_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
{
char *pix_fmts;
OutputStream *ost = ofilter->ost;
AVCodecContext *codec = ost->st->codec;
AVFilterContext *last_filter = out->filter_ctx;
int pad_idx = out->pad_idx;
int ret;
char name[255];
AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();
snprintf(name, sizeof(name), "output stream %d:%d", ost->file_index, ost->index);
ret = avfilter_graph_create_filter(&ofilter->filter,
avfilter_get_by_name("buffersink"),
name, NULL, NULL/*buffersink_params*/, fg->graph);
av_freep(&buffersink_params);
if (ret < 0)
return ret;
if (codec->width || codec->height) {
char args[255];
AVFilterContext *filter;
snprintf(args, sizeof(args), "%d:%d:flags=0x%X",
codec->width,
codec->height,
(unsigned)ost->sws_flags);
snprintf(name, sizeof(name), "scaler for output stream %d:%d",
ost->file_index, ost->index);
if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
name, args, NULL, fg->graph)) < 0)
return ret;
if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
return ret;
last_filter = filter;
pad_idx = 0;
}
if ((pix_fmts = choose_pix_fmts(ost))) {
AVFilterContext *filter;
snprintf(name, sizeof(name), "pixel format for output stream %d:%d",
ost->file_index, ost->index);
if ((ret = avfilter_graph_create_filter(&filter,
avfilter_get_by_name("format"),
"format", pix_fmts, NULL,
fg->graph)) < 0)
return ret;
if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)