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ffmpeg_filter.c
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1 /*
2  * ffmpeg filter configuration
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #include <stdint.h>
22 
23 #include "ffmpeg.h"
24 
25 #include "libavfilter/avfilter.h"
26 #include "libavfilter/buffersink.h"
27 #include "libavfilter/buffersrc.h"
28 
30 
31 #include "libavutil/avassert.h"
32 #include "libavutil/avstring.h"
33 #include "libavutil/bprint.h"
35 #include "libavutil/display.h"
36 #include "libavutil/opt.h"
37 #include "libavutil/pixdesc.h"
38 #include "libavutil/pixfmt.h"
39 #include "libavutil/imgutils.h"
40 #include "libavutil/samplefmt.h"
41 
42 static const enum AVPixelFormat *get_compliance_unofficial_pix_fmts(enum AVCodecID codec_id, const enum AVPixelFormat default_formats[])
43 {
44  static const enum AVPixelFormat mjpeg_formats[] =
48  static const enum AVPixelFormat ljpeg_formats[] =
53 
54  if (codec_id == AV_CODEC_ID_MJPEG) {
55  return mjpeg_formats;
56  } else if (codec_id == AV_CODEC_ID_LJPEG) {
57  return ljpeg_formats;
58  } else {
59  return default_formats;
60  }
61 }
62 
64 {
65  if (codec && codec->pix_fmts) {
66  const enum AVPixelFormat *p = codec->pix_fmts;
68  int has_alpha = desc ? desc->nb_components % 2 == 0 : 0;
69  enum AVPixelFormat best= AV_PIX_FMT_NONE;
70 
73  }
74  for (; *p != AV_PIX_FMT_NONE; p++) {
75  best= avcodec_find_best_pix_fmt_of_2(best, *p, target, has_alpha, NULL);
76  if (*p == target)
77  break;
78  }
79  if (*p == AV_PIX_FMT_NONE) {
80  if (target != AV_PIX_FMT_NONE)
82  "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
83  av_get_pix_fmt_name(target),
84  codec->name,
85  av_get_pix_fmt_name(best));
86  return best;
87  }
88  }
89  return target;
90 }
91 
93 {
94  if (codec && codec->sample_fmts) {
95  const enum AVSampleFormat *p = codec->sample_fmts;
96  for (; *p != -1; p++) {
97  if (*p == st->codecpar->format)
98  break;
99  }
100  if (*p == -1) {
102  av_log(NULL, AV_LOG_ERROR, "Conversion will not be lossless.\n");
105  "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
107  codec->name,
109  st->codecpar->format = codec->sample_fmts[0];
110  }
111  }
112 }
113 
114 static char *choose_pix_fmts(OutputFilter *ofilter)
115 {
116  OutputStream *ost = ofilter->ost;
117  AVDictionaryEntry *strict_dict = av_dict_get(ost->encoder_opts, "strict", NULL, 0);
118  if (strict_dict)
119  // used by choose_pixel_fmt() and below
120  av_opt_set(ost->enc_ctx, "strict", strict_dict->value, 0);
121 
122  if (ost->keep_pix_fmt) {
125  if (ost->enc_ctx->pix_fmt == AV_PIX_FMT_NONE)
126  return NULL;
128  }
129  if (ost->enc_ctx->pix_fmt != AV_PIX_FMT_NONE) {
130  return av_strdup(av_get_pix_fmt_name(choose_pixel_fmt(ost->st, ost->enc_ctx, ost->enc, ost->enc_ctx->pix_fmt)));
131  } else if (ost->enc && ost->enc->pix_fmts) {
132  const enum AVPixelFormat *p;
133  AVIOContext *s = NULL;
134  uint8_t *ret;
135  int len;
136 
137  if (avio_open_dyn_buf(&s) < 0)
138  exit_program(1);
139 
140  p = ost->enc->pix_fmts;
143  }
144 
145  for (; *p != AV_PIX_FMT_NONE; p++) {
146  const char *name = av_get_pix_fmt_name(*p);
147  avio_printf(s, "%s|", name);
148  }
149  len = avio_close_dyn_buf(s, &ret);
150  ret[len - 1] = 0;
151  return ret;
152  } else
153  return NULL;
154 }
155 
156 /* Define a function for building a string containing a list of
157  * allowed formats. */
158 #define DEF_CHOOSE_FORMAT(suffix, type, var, supported_list, none, get_name) \
159 static char *choose_ ## suffix (OutputFilter *ofilter) \
160 { \
161  if (ofilter->var != none) { \
162  get_name(ofilter->var); \
163  return av_strdup(name); \
164  } else if (ofilter->supported_list) { \
165  const type *p; \
166  AVIOContext *s = NULL; \
167  uint8_t *ret; \
168  int len; \
169  \
170  if (avio_open_dyn_buf(&s) < 0) \
171  exit_program(1); \
172  \
173  for (p = ofilter->supported_list; *p != none; p++) { \
174  get_name(*p); \
175  avio_printf(s, "%s|", name); \
176  } \
177  len = avio_close_dyn_buf(s, &ret); \
178  ret[len - 1] = 0; \
179  return ret; \
180  } else \
181  return NULL; \
182 }
183 
184 //DEF_CHOOSE_FORMAT(pix_fmts, enum AVPixelFormat, format, formats, AV_PIX_FMT_NONE,
185 // GET_PIX_FMT_NAME)
186 
189 
192 
193 DEF_CHOOSE_FORMAT(channel_layouts, uint64_t, channel_layout, channel_layouts, 0,
195 
197 {
198  FilterGraph *fg = av_mallocz(sizeof(*fg));
199 
200  if (!fg)
201  exit_program(1);
202  fg->index = nb_filtergraphs;
203 
204  GROW_ARRAY(fg->outputs, fg->nb_outputs);
205  if (!(fg->outputs[0] = av_mallocz(sizeof(*fg->outputs[0]))))
206  exit_program(1);
207  fg->outputs[0]->ost = ost;
208  fg->outputs[0]->graph = fg;
209  fg->outputs[0]->format = -1;
210 
211  ost->filter = fg->outputs[0];
212 
213  GROW_ARRAY(fg->inputs, fg->nb_inputs);
214  if (!(fg->inputs[0] = av_mallocz(sizeof(*fg->inputs[0]))))
215  exit_program(1);
216  fg->inputs[0]->ist = ist;
217  fg->inputs[0]->graph = fg;
218  fg->inputs[0]->format = -1;
219 
220  fg->inputs[0]->frame_queue = av_fifo_alloc(8 * sizeof(AVFrame*));
221  if (!fg->inputs[0]->frame_queue)
222  exit_program(1);
223 
224  GROW_ARRAY(ist->filters, ist->nb_filters);
225  ist->filters[ist->nb_filters - 1] = fg->inputs[0];
226 
228  filtergraphs[nb_filtergraphs - 1] = fg;
229 
230  return 0;
231 }
232 
233 static char *describe_filter_link(FilterGraph *fg, AVFilterInOut *inout, int in)
234 {
235  AVFilterContext *ctx = inout->filter_ctx;
236  AVFilterPad *pads = in ? ctx->input_pads : ctx->output_pads;
237  int nb_pads = in ? ctx->nb_inputs : ctx->nb_outputs;
238  AVIOContext *pb;
239  uint8_t *res = NULL;
240 
241  if (avio_open_dyn_buf(&pb) < 0)
242  exit_program(1);
243 
244  avio_printf(pb, "%s", ctx->filter->name);
245  if (nb_pads > 1)
246  avio_printf(pb, ":%s", avfilter_pad_get_name(pads, inout->pad_idx));
247  avio_w8(pb, 0);
248  avio_close_dyn_buf(pb, &res);
249  return res;
250 }
251 
253 {
254  InputStream *ist = NULL;
256  int i;
257 
258  // TODO: support other filter types
259  if (type != AVMEDIA_TYPE_VIDEO && type != AVMEDIA_TYPE_AUDIO) {
260  av_log(NULL, AV_LOG_FATAL, "Only video and audio filters supported "
261  "currently.\n");
262  exit_program(1);
263  }
264 
265  if (in->name) {
267  AVStream *st = NULL;
268  char *p;
269  int file_idx = strtol(in->name, &p, 0);
270 
271  if (file_idx < 0 || file_idx >= nb_input_files) {
272  av_log(NULL, AV_LOG_FATAL, "Invalid file index %d in filtergraph description %s.\n",
273  file_idx, fg->graph_desc);
274  exit_program(1);
275  }
276  s = input_files[file_idx]->ctx;
277 
278  for (i = 0; i < s->nb_streams; i++) {
279  enum AVMediaType stream_type = s->streams[i]->codecpar->codec_type;
280  if (stream_type != type &&
281  !(stream_type == AVMEDIA_TYPE_SUBTITLE &&
282  type == AVMEDIA_TYPE_VIDEO /* sub2video hack */))
283  continue;
284  if (check_stream_specifier(s, s->streams[i], *p == ':' ? p + 1 : p) == 1) {
285  st = s->streams[i];
286  break;
287  }
288  }
289  if (!st) {
290  av_log(NULL, AV_LOG_FATAL, "Stream specifier '%s' in filtergraph description %s "
291  "matches no streams.\n", p, fg->graph_desc);
292  exit_program(1);
293  }
294  ist = input_streams[input_files[file_idx]->ist_index + st->index];
295  } else {
296  /* find the first unused stream of corresponding type */
297  for (i = 0; i < nb_input_streams; i++) {
298  ist = input_streams[i];
299  if (ist->dec_ctx->codec_type == type && ist->discard)
300  break;
301  }
302  if (i == nb_input_streams) {
303  av_log(NULL, AV_LOG_FATAL, "Cannot find a matching stream for "
304  "unlabeled input pad %d on filter %s\n", in->pad_idx,
305  in->filter_ctx->name);
306  exit_program(1);
307  }
308  }
309  av_assert0(ist);
310 
311  ist->discard = 0;
313  ist->st->discard = AVDISCARD_NONE;
314 
315  GROW_ARRAY(fg->inputs, fg->nb_inputs);
316  if (!(fg->inputs[fg->nb_inputs - 1] = av_mallocz(sizeof(*fg->inputs[0]))))
317  exit_program(1);
318  fg->inputs[fg->nb_inputs - 1]->ist = ist;
319  fg->inputs[fg->nb_inputs - 1]->graph = fg;
320  fg->inputs[fg->nb_inputs - 1]->format = -1;
321  fg->inputs[fg->nb_inputs - 1]->type = ist->st->codecpar->codec_type;
322  fg->inputs[fg->nb_inputs - 1]->name = describe_filter_link(fg, in, 1);
323 
324  fg->inputs[fg->nb_inputs - 1]->frame_queue = av_fifo_alloc(8 * sizeof(AVFrame*));
325  if (!fg->inputs[fg->nb_inputs - 1]->frame_queue)
326  exit_program(1);
327 
328  GROW_ARRAY(ist->filters, ist->nb_filters);
329  ist->filters[ist->nb_filters - 1] = fg->inputs[fg->nb_inputs - 1];
330 }
331 
333 {
334  AVFilterInOut *inputs, *outputs, *cur;
335  AVFilterGraph *graph;
336  int ret = 0;
337 
338  /* this graph is only used for determining the kinds of inputs
339  * and outputs we have, and is discarded on exit from this function */
340  graph = avfilter_graph_alloc();
341  if (!graph)
342  return AVERROR(ENOMEM);
343 
344  ret = avfilter_graph_parse2(graph, fg->graph_desc, &inputs, &outputs);
345  if (ret < 0)
346  goto fail;
347 
348  for (cur = inputs; cur; cur = cur->next)
349  init_input_filter(fg, cur);
350 
351  for (cur = outputs; cur;) {
352  GROW_ARRAY(fg->outputs, fg->nb_outputs);
353  fg->outputs[fg->nb_outputs - 1] = av_mallocz(sizeof(*fg->outputs[0]));
354  if (!fg->outputs[fg->nb_outputs - 1])
355  exit_program(1);
356 
357  fg->outputs[fg->nb_outputs - 1]->graph = fg;
358  fg->outputs[fg->nb_outputs - 1]->out_tmp = cur;
360  cur->pad_idx);
361  fg->outputs[fg->nb_outputs - 1]->name = describe_filter_link(fg, cur, 0);
362  cur = cur->next;
363  fg->outputs[fg->nb_outputs - 1]->out_tmp->next = NULL;
364  }
365 
366 fail:
367  avfilter_inout_free(&inputs);
368  avfilter_graph_free(&graph);
369  return ret;
370 }
371 
372 static int insert_trim(int64_t start_time, int64_t duration,
373  AVFilterContext **last_filter, int *pad_idx,
374  const char *filter_name)
375 {
376  AVFilterGraph *graph = (*last_filter)->graph;
378  const AVFilter *trim;
379  enum AVMediaType type = avfilter_pad_get_type((*last_filter)->output_pads, *pad_idx);
380  const char *name = (type == AVMEDIA_TYPE_VIDEO) ? "trim" : "atrim";
381  int ret = 0;
382 
383  if (duration == INT64_MAX && start_time == AV_NOPTS_VALUE)
384  return 0;
385 
386  trim = avfilter_get_by_name(name);
387  if (!trim) {
388  av_log(NULL, AV_LOG_ERROR, "%s filter not present, cannot limit "
389  "recording time.\n", name);
391  }
392 
393  ctx = avfilter_graph_alloc_filter(graph, trim, filter_name);
394  if (!ctx)
395  return AVERROR(ENOMEM);
396 
397  if (duration != INT64_MAX) {
398  ret = av_opt_set_int(ctx, "durationi", duration,
400  }
401  if (ret >= 0 && start_time != AV_NOPTS_VALUE) {
402  ret = av_opt_set_int(ctx, "starti", start_time,
404  }
405  if (ret < 0) {
406  av_log(ctx, AV_LOG_ERROR, "Error configuring the %s filter", name);
407  return ret;
408  }
409 
410  ret = avfilter_init_str(ctx, NULL);
411  if (ret < 0)
412  return ret;
413 
414  ret = avfilter_link(*last_filter, *pad_idx, ctx, 0);
415  if (ret < 0)
416  return ret;
417 
418  *last_filter = ctx;
419  *pad_idx = 0;
420  return 0;
421 }
422 
423 static int insert_filter(AVFilterContext **last_filter, int *pad_idx,
424  const char *filter_name, const char *args)
425 {
426  AVFilterGraph *graph = (*last_filter)->graph;
428  int ret;
429 
430  ret = avfilter_graph_create_filter(&ctx,
431  avfilter_get_by_name(filter_name),
432  filter_name, args, NULL, graph);
433  if (ret < 0)
434  return ret;
435 
436  ret = avfilter_link(*last_filter, *pad_idx, ctx, 0);
437  if (ret < 0)
438  return ret;
439 
440  *last_filter = ctx;
441  *pad_idx = 0;
442  return 0;
443 }
444 
446 {
447  char *pix_fmts;
448  OutputStream *ost = ofilter->ost;
449  OutputFile *of = output_files[ost->file_index];
451  int pad_idx = out->pad_idx;
452  int ret;
453  char name[255];
454 
455  snprintf(name, sizeof(name), "out_%d_%d", ost->file_index, ost->index);
456  ret = avfilter_graph_create_filter(&ofilter->filter,
457  avfilter_get_by_name("buffersink"),
458  name, NULL, NULL, fg->graph);
459 
460  if (ret < 0)
461  return ret;
462 
463  if (ofilter->width || ofilter->height) {
464  char args[255];
466  AVDictionaryEntry *e = NULL;
467 
468  snprintf(args, sizeof(args), "%d:%d",
469  ofilter->width, ofilter->height);
470 
471  while ((e = av_dict_get(ost->sws_dict, "", e,
473  av_strlcatf(args, sizeof(args), ":%s=%s", e->key, e->value);
474  }
475 
476  snprintf(name, sizeof(name), "scaler_out_%d_%d",
477  ost->file_index, ost->index);
478  if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
479  name, args, NULL, fg->graph)) < 0)
480  return ret;
481  if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
482  return ret;
483 
484  last_filter = filter;
485  pad_idx = 0;
486  }
487 
488  if ((pix_fmts = choose_pix_fmts(ofilter))) {
490  snprintf(name, sizeof(name), "format_out_%d_%d",
491  ost->file_index, ost->index);
492  ret = avfilter_graph_create_filter(&filter,
493  avfilter_get_by_name("format"),
494  "format", pix_fmts, NULL, fg->graph);
495  av_freep(&pix_fmts);
496  if (ret < 0)
497  return ret;
498  if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
499  return ret;
500 
501  last_filter = filter;
502  pad_idx = 0;
503  }
504 
505  if (ost->frame_rate.num && 0) {
506  AVFilterContext *fps;
507  char args[255];
508 
509  snprintf(args, sizeof(args), "fps=%d/%d", ost->frame_rate.num,
510  ost->frame_rate.den);
511  snprintf(name, sizeof(name), "fps_out_%d_%d",
512  ost->file_index, ost->index);
514  name, args, NULL, fg->graph);
515  if (ret < 0)
516  return ret;
517 
518  ret = avfilter_link(last_filter, pad_idx, fps, 0);
519  if (ret < 0)
520  return ret;
521  last_filter = fps;
522  pad_idx = 0;
523  }
524 
525  snprintf(name, sizeof(name), "trim_out_%d_%d",
526  ost->file_index, ost->index);
527  ret = insert_trim(of->start_time, of->recording_time,
528  &last_filter, &pad_idx, name);
529  if (ret < 0)
530  return ret;
531 
532 
533  if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
534  return ret;
535 
536  return 0;
537 }
538 
540 {
541  OutputStream *ost = ofilter->ost;
542  OutputFile *of = output_files[ost->file_index];
543  AVCodecContext *codec = ost->enc_ctx;
545  int pad_idx = out->pad_idx;
547  char name[255];
548  int ret;
549 
550  snprintf(name, sizeof(name), "out_%d_%d", ost->file_index, ost->index);
551  ret = avfilter_graph_create_filter(&ofilter->filter,
552  avfilter_get_by_name("abuffersink"),
553  name, NULL, NULL, fg->graph);
554  if (ret < 0)
555  return ret;
556  if ((ret = av_opt_set_int(ofilter->filter, "all_channel_counts", 1, AV_OPT_SEARCH_CHILDREN)) < 0)
557  return ret;
558 
559 #define AUTO_INSERT_FILTER(opt_name, filter_name, arg) do { \
560  AVFilterContext *filt_ctx; \
561  \
562  av_log(NULL, AV_LOG_INFO, opt_name " is forwarded to lavfi " \
563  "similarly to -af " filter_name "=%s.\n", arg); \
564  \
565  ret = avfilter_graph_create_filter(&filt_ctx, \
566  avfilter_get_by_name(filter_name), \
567  filter_name, arg, NULL, fg->graph); \
568  if (ret < 0) \
569  return ret; \
570  \
571  ret = avfilter_link(last_filter, pad_idx, filt_ctx, 0); \
572  if (ret < 0) \
573  return ret; \
574  \
575  last_filter = filt_ctx; \
576  pad_idx = 0; \
577 } while (0)
578  if (ost->audio_channels_mapped) {
579  int i;
580  AVBPrint pan_buf;
581  av_bprint_init(&pan_buf, 256, 8192);
582  av_bprintf(&pan_buf, "0x%"PRIx64,
584  for (i = 0; i < ost->audio_channels_mapped; i++)
585  if (ost->audio_channels_map[i] != -1)
586  av_bprintf(&pan_buf, "|c%d=c%d", i, ost->audio_channels_map[i]);
587 
588  AUTO_INSERT_FILTER("-map_channel", "pan", pan_buf.str);
589  av_bprint_finalize(&pan_buf, NULL);
590  }
591 
592  if (codec->channels && !codec->channel_layout)
594 
595  sample_fmts = choose_sample_fmts(ofilter);
596  sample_rates = choose_sample_rates(ofilter);
597  channel_layouts = choose_channel_layouts(ofilter);
598  if (sample_fmts || sample_rates || channel_layouts) {
600  char args[256];
601  args[0] = 0;
602 
603  if (sample_fmts)
604  av_strlcatf(args, sizeof(args), "sample_fmts=%s:",
605  sample_fmts);
606  if (sample_rates)
607  av_strlcatf(args, sizeof(args), "sample_rates=%s:",
608  sample_rates);
609  if (channel_layouts)
610  av_strlcatf(args, sizeof(args), "channel_layouts=%s:",
611  channel_layouts);
612 
613  av_freep(&sample_fmts);
614  av_freep(&sample_rates);
615  av_freep(&channel_layouts);
616 
617  snprintf(name, sizeof(name), "format_out_%d_%d",
618  ost->file_index, ost->index);
619  ret = avfilter_graph_create_filter(&format,
620  avfilter_get_by_name("aformat"),
621  name, args, NULL, fg->graph);
622  if (ret < 0)
623  return ret;
624 
625  ret = avfilter_link(last_filter, pad_idx, format, 0);
626  if (ret < 0)
627  return ret;
628 
629  last_filter = format;
630  pad_idx = 0;
631  }
632 
633  if (audio_volume != 256 && 0) {
634  char args[256];
635 
636  snprintf(args, sizeof(args), "%f", audio_volume / 256.);
637  AUTO_INSERT_FILTER("-vol", "volume", args);
638  }
639 
640  if (ost->apad && of->shortest) {
641  char args[256];
642  int i;
643 
644  for (i=0; i<of->ctx->nb_streams; i++)
646  break;
647 
648  if (i<of->ctx->nb_streams) {
649  snprintf(args, sizeof(args), "%s", ost->apad);
650  AUTO_INSERT_FILTER("-apad", "apad", args);
651  }
652  }
653 
654  snprintf(name, sizeof(name), "trim for output stream %d:%d",
655  ost->file_index, ost->index);
656  ret = insert_trim(of->start_time, of->recording_time,
657  &last_filter, &pad_idx, name);
658  if (ret < 0)
659  return ret;
660 
661  if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
662  return ret;
663 
664  return 0;
665 }
666 
668 {
669  if (!ofilter->ost) {
670  av_log(NULL, AV_LOG_FATAL, "Filter %s has an unconnected output\n", ofilter->name);
671  exit_program(1);
672  }
673 
674  switch (avfilter_pad_get_type(out->filter_ctx->output_pads, out->pad_idx)) {
675  case AVMEDIA_TYPE_VIDEO: return configure_output_video_filter(fg, ofilter, out);
676  case AVMEDIA_TYPE_AUDIO: return configure_output_audio_filter(fg, ofilter, out);
677  default: av_assert0(0);
678  }
679 }
680 
681 static int sub2video_prepare(InputStream *ist, InputFilter *ifilter)
682 {
684  int i, w, h;
685 
686  /* Compute the size of the canvas for the subtitles stream.
687  If the subtitles codecpar has set a size, use it. Otherwise use the
688  maximum dimensions of the video streams in the same file. */
689  w = ifilter->width;
690  h = ifilter->height;
691  if (!(w && h)) {
692  for (i = 0; i < avf->nb_streams; i++) {
693  if (avf->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
694  w = FFMAX(w, avf->streams[i]->codecpar->width);
695  h = FFMAX(h, avf->streams[i]->codecpar->height);
696  }
697  }
698  if (!(w && h)) {
699  w = FFMAX(w, 720);
700  h = FFMAX(h, 576);
701  }
702  av_log(avf, AV_LOG_INFO, "sub2video: using %dx%d canvas\n", w, h);
703  }
704  ist->sub2video.w = ifilter->width = w;
705  ist->sub2video.h = ifilter->height = h;
706 
707  ifilter->width = ist->dec_ctx->width ? ist->dec_ctx->width : ist->sub2video.w;
708  ifilter->height = ist->dec_ctx->height ? ist->dec_ctx->height : ist->sub2video.h;
709 
710  /* rectangles are AV_PIX_FMT_PAL8, but we have no guarantee that the
711  palettes for all rectangles are identical or compatible */
712  ifilter->format = AV_PIX_FMT_RGB32;
713 
714  ist->sub2video.frame = av_frame_alloc();
715  if (!ist->sub2video.frame)
716  return AVERROR(ENOMEM);
717  ist->sub2video.last_pts = INT64_MIN;
718  return 0;
719 }
720 
722  AVFilterInOut *in)
723 {
725  const AVFilter *buffer_filt = avfilter_get_by_name("buffer");
726  InputStream *ist = ifilter->ist;
727  InputFile *f = input_files[ist->file_index];
728  AVRational tb = ist->framerate.num ? av_inv_q(ist->framerate) :
729  ist->st->time_base;
730  AVRational fr = ist->framerate;
731  AVRational sar;
732  AVBPrint args;
733  char name[255];
734  int ret, pad_idx = 0;
735  int64_t tsoffset = 0;
737 
738  if (!par)
739  return AVERROR(ENOMEM);
740  memset(par, 0, sizeof(*par));
741  par->format = AV_PIX_FMT_NONE;
742 
743  if (ist->dec_ctx->codec_type == AVMEDIA_TYPE_AUDIO) {
744  av_log(NULL, AV_LOG_ERROR, "Cannot connect video filter to audio input\n");
745  ret = AVERROR(EINVAL);
746  goto fail;
747  }
748 
749  if (!fr.num)
750  fr = av_guess_frame_rate(input_files[ist->file_index]->ctx, ist->st, NULL);
751 
753  ret = sub2video_prepare(ist, ifilter);
754  if (ret < 0)
755  goto fail;
756  }
757 
758  sar = ifilter->sample_aspect_ratio;
759  if(!sar.den)
760  sar = (AVRational){0,1};
761  av_bprint_init(&args, 0, 1);
762  av_bprintf(&args,
763  "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:"
764  "pixel_aspect=%d/%d:sws_param=flags=%d",
765  ifilter->width, ifilter->height, ifilter->format,
766  tb.num, tb.den, sar.num, sar.den,
768  if (fr.num && fr.den)
769  av_bprintf(&args, ":frame_rate=%d/%d", fr.num, fr.den);
770  snprintf(name, sizeof(name), "graph %d input from stream %d:%d", fg->index,
771  ist->file_index, ist->st->index);
772 
773 
774  if ((ret = avfilter_graph_create_filter(&ifilter->filter, buffer_filt, name,
775  args.str, NULL, fg->graph)) < 0)
776  goto fail;
777  par->hw_frames_ctx = ifilter->hw_frames_ctx;
778  ret = av_buffersrc_parameters_set(ifilter->filter, par);
779  if (ret < 0)
780  goto fail;
781  av_freep(&par);
782  last_filter = ifilter->filter;
783 
784  if (ist->autorotate) {
785  double theta = get_rotation(ist->st);
786 
787  if (fabs(theta - 90) < 1.0) {
788  ret = insert_filter(&last_filter, &pad_idx, "transpose", "clock");
789  } else if (fabs(theta - 180) < 1.0) {
790  ret = insert_filter(&last_filter, &pad_idx, "hflip", NULL);
791  if (ret < 0)
792  return ret;
793  ret = insert_filter(&last_filter, &pad_idx, "vflip", NULL);
794  } else if (fabs(theta - 270) < 1.0) {
795  ret = insert_filter(&last_filter, &pad_idx, "transpose", "cclock");
796  } else if (fabs(theta) > 1.0) {
797  char rotate_buf[64];
798  snprintf(rotate_buf, sizeof(rotate_buf), "%f*PI/180", theta);
799  ret = insert_filter(&last_filter, &pad_idx, "rotate", rotate_buf);
800  }
801  if (ret < 0)
802  return ret;
803  }
804 
805  if (do_deinterlace) {
806  AVFilterContext *yadif;
807 
808  snprintf(name, sizeof(name), "deinterlace_in_%d_%d",
809  ist->file_index, ist->st->index);
810  if ((ret = avfilter_graph_create_filter(&yadif,
811  avfilter_get_by_name("yadif"),
812  name, "", NULL,
813  fg->graph)) < 0)
814  return ret;
815 
816  if ((ret = avfilter_link(last_filter, 0, yadif, 0)) < 0)
817  return ret;
818 
819  last_filter = yadif;
820  }
821 
822  snprintf(name, sizeof(name), "trim_in_%d_%d",
823  ist->file_index, ist->st->index);
824  if (copy_ts) {
825  tsoffset = f->start_time == AV_NOPTS_VALUE ? 0 : f->start_time;
827  tsoffset += f->ctx->start_time;
828  }
829  ret = insert_trim(((f->start_time == AV_NOPTS_VALUE) || !f->accurate_seek) ?
830  AV_NOPTS_VALUE : tsoffset, f->recording_time,
831  &last_filter, &pad_idx, name);
832  if (ret < 0)
833  return ret;
834 
835  if ((ret = avfilter_link(last_filter, 0, in->filter_ctx, in->pad_idx)) < 0)
836  return ret;
837  return 0;
838 fail:
839  av_freep(&par);
840 
841  return ret;
842 }
843 
845  AVFilterInOut *in)
846 {
848  const AVFilter *abuffer_filt = avfilter_get_by_name("abuffer");
849  InputStream *ist = ifilter->ist;
850  InputFile *f = input_files[ist->file_index];
851  AVBPrint args;
852  char name[255];
853  int ret, pad_idx = 0;
854  int64_t tsoffset = 0;
855 
856  if (ist->dec_ctx->codec_type != AVMEDIA_TYPE_AUDIO) {
857  av_log(NULL, AV_LOG_ERROR, "Cannot connect audio filter to non audio input\n");
858  return AVERROR(EINVAL);
859  }
860 
862  av_bprintf(&args, "time_base=%d/%d:sample_rate=%d:sample_fmt=%s",
863  1, ifilter->sample_rate,
864  ifilter->sample_rate,
865  av_get_sample_fmt_name(ifilter->format));
866  if (ifilter->channel_layout)
867  av_bprintf(&args, ":channel_layout=0x%"PRIx64,
868  ifilter->channel_layout);
869  else
870  av_bprintf(&args, ":channels=%d", ifilter->channels);
871  snprintf(name, sizeof(name), "graph_%d_in_%d_%d", fg->index,
872  ist->file_index, ist->st->index);
873 
874  if ((ret = avfilter_graph_create_filter(&ifilter->filter, abuffer_filt,
875  name, args.str, NULL,
876  fg->graph)) < 0)
877  return ret;
878  last_filter = ifilter->filter;
879 
880 #define AUTO_INSERT_FILTER_INPUT(opt_name, filter_name, arg) do { \
881  AVFilterContext *filt_ctx; \
882  \
883  av_log(NULL, AV_LOG_INFO, opt_name " is forwarded to lavfi " \
884  "similarly to -af " filter_name "=%s.\n", arg); \
885  \
886  snprintf(name, sizeof(name), "graph_%d_%s_in_%d_%d", \
887  fg->index, filter_name, ist->file_index, ist->st->index); \
888  ret = avfilter_graph_create_filter(&filt_ctx, \
889  avfilter_get_by_name(filter_name), \
890  name, arg, NULL, fg->graph); \
891  if (ret < 0) \
892  return ret; \
893  \
894  ret = avfilter_link(last_filter, 0, filt_ctx, 0); \
895  if (ret < 0) \
896  return ret; \
897  \
898  last_filter = filt_ctx; \
899 } while (0)
900 
901  if (audio_sync_method > 0) {
902  char args[256] = {0};
903 
904  av_strlcatf(args, sizeof(args), "async=%d", audio_sync_method);
905  if (audio_drift_threshold != 0.1)
906  av_strlcatf(args, sizeof(args), ":min_hard_comp=%f", audio_drift_threshold);
907  if (!fg->reconfiguration)
908  av_strlcatf(args, sizeof(args), ":first_pts=0");
909  AUTO_INSERT_FILTER_INPUT("-async", "aresample", args);
910  }
911 
912 // if (ost->audio_channels_mapped) {
913 // int i;
914 // AVBPrint pan_buf;
915 // av_bprint_init(&pan_buf, 256, 8192);
916 // av_bprintf(&pan_buf, "0x%"PRIx64,
917 // av_get_default_channel_layout(ost->audio_channels_mapped));
918 // for (i = 0; i < ost->audio_channels_mapped; i++)
919 // if (ost->audio_channels_map[i] != -1)
920 // av_bprintf(&pan_buf, ":c%d=c%d", i, ost->audio_channels_map[i]);
921 // AUTO_INSERT_FILTER_INPUT("-map_channel", "pan", pan_buf.str);
922 // av_bprint_finalize(&pan_buf, NULL);
923 // }
924 
925  if (audio_volume != 256) {
926  char args[256];
927 
928  av_log(NULL, AV_LOG_WARNING, "-vol has been deprecated. Use the volume "
929  "audio filter instead.\n");
930 
931  snprintf(args, sizeof(args), "%f", audio_volume / 256.);
932  AUTO_INSERT_FILTER_INPUT("-vol", "volume", args);
933  }
934 
935  snprintf(name, sizeof(name), "trim for input stream %d:%d",
936  ist->file_index, ist->st->index);
937  if (copy_ts) {
938  tsoffset = f->start_time == AV_NOPTS_VALUE ? 0 : f->start_time;
940  tsoffset += f->ctx->start_time;
941  }
942  ret = insert_trim(((f->start_time == AV_NOPTS_VALUE) || !f->accurate_seek) ?
943  AV_NOPTS_VALUE : tsoffset, f->recording_time,
944  &last_filter, &pad_idx, name);
945  if (ret < 0)
946  return ret;
947 
948  if ((ret = avfilter_link(last_filter, 0, in->filter_ctx, in->pad_idx)) < 0)
949  return ret;
950 
951  return 0;
952 }
953 
955  AVFilterInOut *in)
956 {
957  if (!ifilter->ist->dec) {
959  "No decoder for stream #%d:%d, filtering impossible\n",
960  ifilter->ist->file_index, ifilter->ist->st->index);
962  }
963  switch (avfilter_pad_get_type(in->filter_ctx->input_pads, in->pad_idx)) {
964  case AVMEDIA_TYPE_VIDEO: return configure_input_video_filter(fg, ifilter, in);
965  case AVMEDIA_TYPE_AUDIO: return configure_input_audio_filter(fg, ifilter, in);
966  default: av_assert0(0);
967  }
968 }
969 
971 {
972  int i;
973  for (i = 0; i < fg->nb_outputs; i++)
974  fg->outputs[i]->filter = (AVFilterContext *)NULL;
975  for (i = 0; i < fg->nb_inputs; i++)
976  fg->inputs[i]->filter = (AVFilterContext *)NULL;
978 }
979 
981 {
982  AVFilterInOut *inputs, *outputs, *cur;
983  int ret, i, simple = filtergraph_is_simple(fg);
984  const char *graph_desc = simple ? fg->outputs[0]->ost->avfilter :
985  fg->graph_desc;
986 
988  if (!(fg->graph = avfilter_graph_alloc()))
989  return AVERROR(ENOMEM);
990 
991  if (simple) {
992  OutputStream *ost = fg->outputs[0]->ost;
993  char args[512];
994  AVDictionaryEntry *e = NULL;
995 
997 
998  args[0] = 0;
999  while ((e = av_dict_get(ost->sws_dict, "", e,
1001  av_strlcatf(args, sizeof(args), "%s=%s:", e->key, e->value);
1002  }
1003  if (strlen(args))
1004  args[strlen(args)-1] = 0;
1005  fg->graph->scale_sws_opts = av_strdup(args);
1006 
1007  args[0] = 0;
1008  while ((e = av_dict_get(ost->swr_opts, "", e,
1010  av_strlcatf(args, sizeof(args), "%s=%s:", e->key, e->value);
1011  }
1012  if (strlen(args))
1013  args[strlen(args)-1] = 0;
1014  av_opt_set(fg->graph, "aresample_swr_opts", args, 0);
1015 
1016  args[0] = '\0';
1017  while ((e = av_dict_get(fg->outputs[0]->ost->resample_opts, "", e,
1019  av_strlcatf(args, sizeof(args), "%s=%s:", e->key, e->value);
1020  }
1021  if (strlen(args))
1022  args[strlen(args) - 1] = '\0';
1023 
1024  e = av_dict_get(ost->encoder_opts, "threads", NULL, 0);
1025  if (e)
1026  av_opt_set(fg->graph, "threads", e->value, 0);
1027  } else {
1029  }
1030 
1031  if ((ret = avfilter_graph_parse2(fg->graph, graph_desc, &inputs, &outputs)) < 0)
1032  goto fail;
1033 
1034  if (hw_device_ctx) {
1035  for (i = 0; i < fg->graph->nb_filters; i++) {
1037  }
1038  }
1039 
1040  if (simple && (!inputs || inputs->next || !outputs || outputs->next)) {
1041  const char *num_inputs;
1042  const char *num_outputs;
1043  if (!outputs) {
1044  num_outputs = "0";
1045  } else if (outputs->next) {
1046  num_outputs = ">1";
1047  } else {
1048  num_outputs = "1";
1049  }
1050  if (!inputs) {
1051  num_inputs = "0";
1052  } else if (inputs->next) {
1053  num_inputs = ">1";
1054  } else {
1055  num_inputs = "1";
1056  }
1057  av_log(NULL, AV_LOG_ERROR, "Simple filtergraph '%s' was expected "
1058  "to have exactly 1 input and 1 output."
1059  " However, it had %s input(s) and %s output(s)."
1060  " Please adjust, or use a complex filtergraph (-filter_complex) instead.\n",
1061  graph_desc, num_inputs, num_outputs);
1062  ret = AVERROR(EINVAL);
1063  goto fail;
1064  }
1065 
1066  for (cur = inputs, i = 0; cur; cur = cur->next, i++)
1067  if ((ret = configure_input_filter(fg, fg->inputs[i], cur)) < 0) {
1068  avfilter_inout_free(&inputs);
1069  avfilter_inout_free(&outputs);
1070  goto fail;
1071  }
1072  avfilter_inout_free(&inputs);
1073 
1074  for (cur = outputs, i = 0; cur; cur = cur->next, i++)
1075  configure_output_filter(fg, fg->outputs[i], cur);
1076  avfilter_inout_free(&outputs);
1077 
1078  if ((ret = avfilter_graph_config(fg->graph, NULL)) < 0)
1079  goto fail;
1080 
1081  /* limit the lists of allowed formats to the ones selected, to
1082  * make sure they stay the same if the filtergraph is reconfigured later */
1083  for (i = 0; i < fg->nb_outputs; i++) {
1084  OutputFilter *ofilter = fg->outputs[i];
1085  AVFilterContext *sink = ofilter->filter;
1086 
1087  ofilter->format = av_buffersink_get_format(sink);
1088 
1089  ofilter->width = av_buffersink_get_w(sink);
1090  ofilter->height = av_buffersink_get_h(sink);
1091 
1092  ofilter->sample_rate = av_buffersink_get_sample_rate(sink);
1094  }
1095 
1096  fg->reconfiguration = 1;
1097 
1098  for (i = 0; i < fg->nb_outputs; i++) {
1099  OutputStream *ost = fg->outputs[i]->ost;
1100  if (!ost->enc) {
1101  /* identical to the same check in ffmpeg.c, needed because
1102  complex filter graphs are initialized earlier */
1103  av_log(NULL, AV_LOG_ERROR, "Encoder (codec %s) not found for output stream #%d:%d\n",
1104  avcodec_get_name(ost->st->codecpar->codec_id), ost->file_index, ost->index);
1105  ret = AVERROR(EINVAL);
1106  goto fail;
1107  }
1108  if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1109  !(ost->enc->capabilities & AV_CODEC_CAP_VARIABLE_FRAME_SIZE))
1111  ost->enc_ctx->frame_size);
1112  }
1113 
1114  for (i = 0; i < fg->nb_inputs; i++) {
1115  while (av_fifo_size(fg->inputs[i]->frame_queue)) {
1116  AVFrame *tmp;
1117  av_fifo_generic_read(fg->inputs[i]->frame_queue, &tmp, sizeof(tmp), NULL);
1118  ret = av_buffersrc_add_frame(fg->inputs[i]->filter, tmp);
1119  av_frame_free(&tmp);
1120  if (ret < 0)
1121  goto fail;
1122  }
1123  }
1124 
1125  /* send the EOFs for the finished inputs */
1126  for (i = 0; i < fg->nb_inputs; i++) {
1127  if (fg->inputs[i]->eof) {
1128  ret = av_buffersrc_add_frame(fg->inputs[i]->filter, NULL);
1129  if (ret < 0)
1130  goto fail;
1131  }
1132  }
1133 
1134  /* process queued up subtitle packets */
1135  for (i = 0; i < fg->nb_inputs; i++) {
1136  InputStream *ist = fg->inputs[i]->ist;
1137  if (ist->sub2video.sub_queue && ist->sub2video.frame) {
1138  while (av_fifo_size(ist->sub2video.sub_queue)) {
1139  AVSubtitle tmp;
1140  av_fifo_generic_read(ist->sub2video.sub_queue, &tmp, sizeof(tmp), NULL);
1141  sub2video_update(ist, &tmp);
1142  avsubtitle_free(&tmp);
1143  }
1144  }
1145  }
1146 
1147  return 0;
1148 
1149 fail:
1150  cleanup_filtergraph(fg);
1151  return ret;
1152 }
1153 
1155 {
1156  av_buffer_unref(&ifilter->hw_frames_ctx);
1157 
1158  ifilter->format = frame->format;
1159 
1160  ifilter->width = frame->width;
1161  ifilter->height = frame->height;
1162  ifilter->sample_aspect_ratio = frame->sample_aspect_ratio;
1163 
1164  ifilter->sample_rate = frame->sample_rate;
1165  ifilter->channels = av_frame_get_channels(frame);
1166  ifilter->channel_layout = frame->channel_layout;
1167 
1168  if (frame->hw_frames_ctx) {
1169  ifilter->hw_frames_ctx = av_buffer_ref(frame->hw_frames_ctx);
1170  if (!ifilter->hw_frames_ctx)
1171  return AVERROR(ENOMEM);
1172  }
1173 
1174  return 0;
1175 }
1176 
1178 {
1179  int i;
1180  for (i = 0; i < fg->nb_inputs; i++)
1181  if (fg->inputs[i]->ist == ist)
1182  return 1;
1183  return 0;
1184 }
1185 
1187 {
1188  return !fg->graph_desc;
1189 }
AVFilterContext ** filters
Definition: avfilter.h:840
void avfilter_graph_set_auto_convert(AVFilterGraph *graph, unsigned flags)
Enable or disable automatic format conversion inside the graph.
all automatic conversions disabled
Definition: avfilter.h:988
#define NULL
Definition: coverity.c:32
int width
Definition: ffmpeg.h:266
int keep_pix_fmt
Definition: ffmpeg.h:523
const char * s
Definition: avisynth_c.h:768
Bytestream IO Context.
Definition: avio.h:155
int64_t recording_time
desired length of the resulting file in microseconds == AV_TIME_BASE units
Definition: ffmpeg.h:556
void av_bprintf(AVBPrint *buf, const char *fmt,...)
Definition: bprint.c:94
uint8_t * name
Definition: ffmpeg.h:259
int nb_outputs
Definition: ffmpeg.h:288
void av_buffer_unref(AVBufferRef **buf)
Free a given reference and automatically free the buffer if there are no more references to it...
Definition: buffer.c:125
AVDictionary * swr_opts
Definition: ffmpeg.h:504
#define DECODING_FOR_FILTER
Definition: ffmpeg.h:298
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2333
This structure describes decoded (raw) audio or video data.
Definition: frame.h:187
static int configure_input_filter(FilterGraph *fg, InputFilter *ifilter, AVFilterInOut *in)
int avio_close_dyn_buf(AVIOContext *s, uint8_t **pbuffer)
Return the written size and a pointer to the buffer.
Definition: aviobuf.c:1317
AVRational frame_rate
Definition: ffmpeg.h:473
double get_rotation(AVStream *st)
Definition: cmdutils.c:2098
int accurate_seek
Definition: ffmpeg.h:409
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:67
misc image utilities
AVFilterGraph * avfilter_graph_alloc(void)
Allocate a filter graph.
Definition: avfiltergraph.c:80
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
Main libavfilter public API header.
Memory buffer source API.
const char * desc
Definition: nvenc.c:60
AVRational framerate
Definition: ffmpeg.h:329
int avfilter_graph_config(AVFilterGraph *graphctx, void *log_ctx)
Check validity and configure all the links and formats in the graph.
void avfilter_inout_free(AVFilterInOut **inout)
Free the supplied list of AVFilterInOut and set *inout to NULL.
Definition: graphparser.c:187
struct AVFilterInOut * next
next input/input in the list, NULL if this is the last
Definition: avfilter.h:1026
int height
Definition: ffmpeg.h:243
int check_stream_specifier(AVFormatContext *s, AVStream *st, const char *spec)
Check if the given stream matches a stream specifier.
Definition: cmdutils.c:1994
AVFilterInOut * out_tmp
Definition: ffmpeg.h:262
enum AVMediaType avfilter_pad_get_type(const AVFilterPad *pads, int pad_idx)
Get the type of an AVFilterPad.
Definition: avfilter.c:1086
int decoding_needed
Definition: ffmpeg.h:296
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: avcodec.h:4056
static int insert_trim(int64_t start_time, int64_t duration, AVFilterContext **last_filter, int *pad_idx, const char *filter_name)
void sub2video_update(InputStream *ist, AVSubtitle *sub)
Definition: ffmpeg.c:230
int num
Numerator.
Definition: rational.h:59
static void init_input_filter(FilterGraph *fg, AVFilterInOut *in)
int index
stream index in AVFormatContext
Definition: avformat.h:890
int init_complex_filtergraph(FilterGraph *fg)
void avfilter_graph_free(AVFilterGraph **graph)
Free a graph, destroy its links, and set *graph to NULL.
AVBufferRef * hw_device_ctx
For filters which will create hardware frames, sets the device the filter should create them in...
Definition: avfilter.h:377
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1950
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:222
int nb_input_streams
Definition: ffmpeg.c:143
#define DEF_CHOOSE_FORMAT(suffix, type, var, supported_list, none, get_name)
static enum AVPixelFormat * get_compliance_unofficial_pix_fmts(enum AVCodecID codec_id, const enum AVPixelFormat default_formats[])
Definition: ffmpeg_filter.c:42
AVCodec.
Definition: avcodec.h:3671
int avio_open_dyn_buf(AVIOContext **s)
Open a write only memory stream.
Definition: aviobuf.c:1288
int64_t start_time
start time in microseconds == AV_TIME_BASE units
Definition: ffmpeg.h:557
int av_bprint_finalize(AVBPrint *buf, char **ret_str)
Finalize a print buffer.
Definition: bprint.c:235
int index
Definition: ffmpeg.h:279
char * scale_sws_opts
sws options to use for the auto-inserted scale filters
Definition: avfilter.h:843
struct FilterGraph * graph
Definition: ffmpeg.h:234
AVBufferRef * hw_frames_ctx
For hwaccel-format frames, this should be a reference to the AVHWFramesContext describing the frame...
Definition: frame.h:515
Format I/O context.
Definition: avformat.h:1349
AVRational av_guess_frame_rate(AVFormatContext *ctx, AVStream *stream, AVFrame *frame)
Guess the frame rate, based on both the container and codec information.
Definition: utils.c:4806
#define SWS_BILINEAR
Definition: swscale.h:59
int configure_filtergraph(FilterGraph *fg)
memory buffer sink API for audio and video
enum AVPixelFormat choose_pixel_fmt(AVStream *st, AVCodecContext *enc_ctx, AVCodec *codec, enum AVPixelFormat target)
Definition: ffmpeg_filter.c:63
struct InputStream * ist
Definition: ffmpeg.h:233
char * name
name of this filter instance
Definition: avfilter.h:326
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
static AVFilter ** last_filter
Definition: avfilter.c:561
AVFilterGraph * graph
Definition: ffmpeg.h:282
int av_buffersink_get_sample_rate(const AVFilterContext *ctx)
int avfilter_link(AVFilterContext *src, unsigned srcpad, AVFilterContext *dst, unsigned dstpad)
Link two filters together.
Definition: avfilter.c:135
AVFilterPad * output_pads
array of output pads
Definition: avfilter.h:332
static int configure_input_video_filter(FilterGraph *fg, InputFilter *ifilter, AVFilterInOut *in)
static int64_t start_time
Definition: ffplay.c:328
uint8_t
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
Definition: frame.c:150
AVDictionary * sws_dict
Definition: ffmpeg.h:503
int width
Video only.
Definition: avcodec.h:4122
AVOptions.
static int configure_output_video_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
int configure_output_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
int audio_sync_method
Definition: ffmpeg_opt.c:103
static void filter(int16_t *output, ptrdiff_t out_stride, int16_t *low, ptrdiff_t low_stride, int16_t *high, ptrdiff_t high_stride, int len, uint8_t clip)
Definition: cfhd.c:80
int shortest
Definition: ffmpeg.h:560
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1417
int64_t duration
Definition: movenc.c:63
static AVFrame * frame
int avfilter_graph_create_filter(AVFilterContext **filt_ctx, const AVFilter *filt, const char *name, const char *args, void *opaque, AVFilterGraph *graph_ctx)
Create and add a filter instance into an existing graph.
AVDictionaryEntry * av_dict_get(const AVDictionary *m, const char *key, const AVDictionaryEntry *prev, int flags)
Get a dictionary entry with matching key.
Definition: dict.c:40
enum AVMediaType type
Definition: ffmpeg.h:236
int nb_threads
Maximum number of threads used by filters in this graph.
Definition: avfilter.h:867
AVDictionary * resample_opts
Definition: ffmpeg.h:505
AVFilterContext * filter
Definition: ffmpeg.h:256
planar YUV 4:2:2, 16bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV422P and setting col...
Definition: pixfmt.h:75
int nb_input_files
Definition: ffmpeg.c:145
AVCodec * dec
Definition: ffmpeg.h:301
int avfilter_graph_parse2(AVFilterGraph *graph, const char *filters, AVFilterInOut **inputs, AVFilterInOut **outputs)
Add a graph described by a string to a graph.
Definition: graphparser.c:391
int ist_in_filtergraph(FilterGraph *fg, InputStream *ist)
int file_index
Definition: ffmpeg.h:292
int av_buffersink_get_h(const AVFilterContext *ctx)
struct InputStream::sub2video sub2video
int av_buffersink_get_format(const AVFilterContext *ctx)
#define av_log(a,...)
int filter_complex_nbthreads
Definition: ffmpeg_opt.c:123
#define FF_COMPLIANCE_UNOFFICIAL
Allow unofficial extensions.
Definition: avcodec.h:2945
A filter pad used for either input or output.
Definition: internal.h:54
uint64_t channel_layout
Definition: ffmpeg.h:270
AVFifoBuffer * sub_queue
queue of AVSubtitle* before filter init
Definition: ffmpeg.h:345
static int insert_filter(AVFilterContext **last_filter, int *pad_idx, const char *filter_name, const char *args)
AVFilterPad * input_pads
array of input pads
Definition: avfilter.h:328
AVRational sample_aspect_ratio
Definition: ffmpeg.h:244
AVCodecID
Identify the syntax and semantics of the bitstream.
Definition: avcodec.h:214
int width
width and height of the video frame
Definition: frame.h:239
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
#define GET_CH_LAYOUT_NAME(ch_layout)
Definition: cmdutils.h:599
int sample_rate
Definition: ffmpeg.h:246
FilterGraph ** filtergraphs
Definition: ffmpeg.c:152
AVFilterContext * filter
Definition: ffmpeg.h:232
#define AVERROR(e)
Definition: error.h:43
int format
Definition: ffmpeg.h:241
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:163
unsigned nb_outputs
number of output pads
Definition: avfilter.h:334
void av_bprint_init(AVBPrint *buf, unsigned size_init, unsigned size_max)
Definition: bprint.c:69
packed BGRA 8:8:8:8, 32bpp, BGRABGRA...
Definition: pixfmt.h:96
int capabilities
Codec capabilities.
Definition: avcodec.h:3690
int av_fifo_generic_read(AVFifoBuffer *f, void *dest, int buf_size, void(*func)(void *, void *, int))
Feed data from an AVFifoBuffer to a user-supplied callback.
Definition: fifo.c:213
enum AVMediaType codec_type
General type of the encoded data.
Definition: avcodec.h:4052
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:1817
int av_opt_set_int(void *obj, const char *name, int64_t val, int search_flags)
Definition: opt.c:560
simple assert() macros that are a bit more flexible than ISO C assert().
const char * name
Name of the codec implementation.
Definition: avcodec.h:3678
const char * av_get_sample_fmt_name(enum AVSampleFormat sample_fmt)
Return the name of sample_fmt, or NULL if sample_fmt is not recognized.
Definition: samplefmt.c:49
int eof
Definition: ffmpeg.h:252
int format
video: the pixel format, value corresponds to enum AVPixelFormat audio: the sample format...
Definition: buffersrc.h:78
#define FFMAX(a, b)
Definition: common.h:94
#define fail()
Definition: checkasm.h:89
#define AV_CODEC_CAP_VARIABLE_FRAME_SIZE
Audio encoder supports receiving a different number of samples in each call.
Definition: avcodec.h:1073
static int configure_output_audio_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
uint64_t channel_layout
Audio channel layout.
Definition: avcodec.h:2535
int filter_nbthreads
Definition: ffmpeg_opt.c:122
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:66
OutputFilter * filter
Definition: ffmpeg.h:497
uint64_t channel_layout
Channel layout of the audio data.
Definition: frame.h:356
const AVFilter * avfilter_get_by_name(const char *name)
Get a filter definition matching the given name.
Definition: avfilter.c:566
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
Definition: avformat.h:1405
uint8_t nb_components
The number of components each pixel has, (1-4)
Definition: pixdesc.h:83
audio channel layout utility functions
enum AVPixelFormat * pix_fmts
array of supported pixel formats, or NULL if unknown, array is terminated by -1
Definition: avcodec.h:3692
This structure contains the parameters describing the frames that will be passed to this filter...
Definition: buffersrc.h:73
#define AV_CODEC_FLAG_BITEXACT
Use only bitexact stuff (except (I)DCT).
Definition: avcodec.h:921
unsigned nb_inputs
number of input pads
Definition: avfilter.h:330
external API header
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV420P and setting col...
Definition: pixfmt.h:74
#define AV_OPT_SEARCH_CHILDREN
Search in possible children of the given object first.
Definition: opt.h:557
struct OutputStream * ost
Definition: ffmpeg.h:257
int width
picture width / height.
Definition: avcodec.h:1909
char * apad
Definition: ffmpeg.h:506
AVS_Value args
Definition: avisynth_c.h:699
int width
Definition: ffmpeg.h:243
AVFormatContext * ctx
Definition: movenc.c:48
int nb_filtergraphs
Definition: ffmpeg.c:153
int audio_channels_mapped
Definition: ffmpeg.h:492
packed RGB 8:8:8, 24bpp, BGRBGR...
Definition: pixfmt.h:65
enum AVCodecID codec_id
Definition: vaapi_decode.c:235
int height
Definition: ffmpeg.h:266
static const AVFilterPad outputs[]
Definition: af_afftfilt.c:386
int sample_rate
Definition: ffmpeg.h:269
#define GET_SAMPLE_FMT_NAME(sample_fmt)
Definition: cmdutils.h:592
AVFilterContext * filter_ctx
filter context associated to this input/output
Definition: avfilter.h:1020
const char * avcodec_get_name(enum AVCodecID id)
Get the name of a codec.
Definition: utils.c:3187
void exit_program(int ret)
Wraps exit with a program-specific cleanup routine.
Definition: cmdutils.c:135
AVCodecContext * enc
Definition: muxing.c:55
int start_at_zero
Definition: ffmpeg_opt.c:112
int avfilter_init_str(AVFilterContext *filter, const char *args)
Initialize a filter with the supplied parameters.
Definition: avfilter.c:962
int audio_volume
Definition: ffmpeg_opt.c:102
Stream structure.
Definition: avformat.h:889
static char * describe_filter_link(FilterGraph *fg, AVFilterInOut *inout, int in)
A linked-list of the inputs/outputs of the filter chain.
Definition: avfilter.h:1015
int format
format of the frame, -1 if unknown or unset Values correspond to enum AVPixelFormat for video frames...
Definition: frame.h:251
InputFilter ** filters
Definition: ffmpeg.h:354
enum AVPixelFormat avcodec_find_best_pix_fmt_of_2(enum AVPixelFormat dst_pix_fmt1, enum AVPixelFormat dst_pix_fmt2, enum AVPixelFormat src_pix_fmt, int has_alpha, int *loss_ptr)
Definition: imgconvert.c:54
#define GET_SAMPLE_RATE_NAME(rate)
Definition: cmdutils.h:595
int64_t recording_time
Definition: ffmpeg.h:404
int frame_size
Number of samples per channel in an audio frame.
Definition: avcodec.h:2504
AVBufferRef * hw_frames_ctx
Video with a hwaccel pixel format only.
Definition: buffersrc.h:106
AVStream * st
Definition: ffmpeg.h:293
sample_rate
#define AV_LOG_INFO
Standard information.
Definition: log.h:187
static const AVFilterPad inputs[]
Definition: af_afftfilt.c:376
#define AV_BPRINT_SIZE_AUTOMATIC
char * av_strdup(const char *s)
Duplicate a string.
Definition: mem.c:237
static int configure_input_audio_filter(FilterGraph *fg, InputFilter *ifilter, AVFilterInOut *in)
enum AVMediaType codec_type
Definition: avcodec.h:1730
AVSampleFormat
Audio sample formats.
Definition: samplefmt.h:58
enum AVCodecID codec_id
Definition: avcodec.h:1739
int av_fifo_size(const AVFifoBuffer *f)
Return the amount of data in bytes in the AVFifoBuffer, that is the amount of data you can read from ...
Definition: fifo.c:77
int ist_index
Definition: ffmpeg.h:393
const char * graph_desc
Definition: ffmpeg.h:280
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
uint64_t av_buffersink_get_channel_layout(const AVFilterContext *ctx)
int64_t start_time
Definition: ffmpeg.h:402
void avio_w8(AVIOContext *s, int b)
Definition: aviobuf.c:183
main external API structure.
Definition: avcodec.h:1722
#define AV_PIX_FMT_RGB32
Definition: pixfmt.h:326
void avsubtitle_free(AVSubtitle *sub)
Free all allocated data in the given subtitle struct.
Definition: utils.c:2782
AVRational sample_aspect_ratio
Sample aspect ratio for the video frame, 0/1 if unknown/unspecified.
Definition: frame.h:266
int ifilter_parameters_from_frame(InputFilter *ifilter, const AVFrame *frame)
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(constint16_t *) pi >>8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(constint32_t *) pi >>24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(constfloat *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(constfloat *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(constfloat *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(constdouble *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(constdouble *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(constdouble *) pi *(1U<< 31))))#defineSET_CONV_FUNC_GROUP(ofmt, ifmt) staticvoidset_generic_function(AudioConvert *ac){}voidff_audio_convert_free(AudioConvert **ac){if(!*ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);}AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enumAVSampleFormatout_fmt, enumAVSampleFormatin_fmt, intchannels, intsample_rate, intapply_map){AudioConvert *ac;intin_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) returnNULL;ac->avr=avr;ac->out_fmt=out_fmt;ac->in_fmt=in_fmt;ac->channels=channels;ac->apply_map=apply_map;if(avr->dither_method!=AV_RESAMPLE_DITHER_NONE &&av_get_packed_sample_fmt(out_fmt)==AV_SAMPLE_FMT_S16 &&av_get_bytes_per_sample(in_fmt)>2){ac->dc=ff_dither_alloc(avr, out_fmt, in_fmt, channels, sample_rate, apply_map);if(!ac->dc){av_free(ac);returnNULL;}returnac;}in_planar=ff_sample_fmt_is_planar(in_fmt, channels);out_planar=ff_sample_fmt_is_planar(out_fmt, channels);if(in_planar==out_planar){ac->func_type=CONV_FUNC_TYPE_FLAT;ac->planes=in_planar?ac->channels:1;}elseif(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;elseac->func_type=CONV_FUNC_TYPE_DEINTERLEAVE;set_generic_function(ac);if(ARCH_AARCH64) ff_audio_convert_init_aarch64(ac);if(ARCH_ARM) ff_audio_convert_init_arm(ac);if(ARCH_X86) ff_audio_convert_init_x86(ac);returnac;}intff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in){intuse_generic=1;intlen=in->nb_samples;intp;if(ac->dc){av_log(ac->avr, AV_LOG_TRACE,"%dsamples-audio_convert:%sto%s(dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));returnff_convert_dither(ac-> in
AVCodecContext * enc_ctx
Definition: ffmpeg.h:461
#define AUTO_INSERT_FILTER(opt_name, filter_name, arg)
GLint GLenum type
Definition: opengl_enc.c:105
AVBufferRef * hw_frames_ctx
Definition: ffmpeg.h:250
int channels
Definition: ffmpeg.h:247
int * audio_channels_map
Definition: ffmpeg.h:491
static const char * format
Definition: movenc.c:47
static const uint16_t channel_layouts[7]
Definition: dca_lbr.c:118
int sample_rate
Sample rate of the audio data.
Definition: frame.h:351
int av_frame_get_channels(const AVFrame *frame)
Filter definition.
Definition: avfilter.h:144
int pad_idx
index of the filt_ctx pad to use for linking
Definition: avfilter.h:1023
Rational number (pair of numerator and denominator).
Definition: rational.h:58
int file_index
Definition: ffmpeg.h:439
AVCodecContext * dec_ctx
Definition: ffmpeg.h:300
AVMediaType
Definition: avutil.h:199
size_t av_strlcatf(char *dst, size_t size, const char *fmt,...)
Definition: avstring.c:101
packed BGR 8:8:8, 32bpp, BGRXBGRX... X=unused/undefined
Definition: pixfmt.h:254
const char * name
Filter name.
Definition: avfilter.h:148
int av_buffersink_get_w(const AVFilterContext *ctx)
unsigned nb_filters
Definition: avfilter.h:841
int autorotate
Definition: ffmpeg.h:333
#define snprintf
Definition: snprintf.h:34
const char * avfilter_pad_get_name(const AVFilterPad *pads, int pad_idx)
Get the name of an AVFilterPad.
Definition: avfilter.c:1081
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:262
float audio_drift_threshold
Definition: ffmpeg_opt.c:98
char * name
unique name for this input/output in the list
Definition: avfilter.h:1017
int nb_filters
Definition: ffmpeg.h:355
#define SWS_BITEXACT
Definition: swscale.h:84
int64_t start_time
Position of the first frame of the component, in AV_TIME_BASE fractional seconds. ...
Definition: avformat.h:1434
#define AVERROR_FILTER_NOT_FOUND
Filter not found.
Definition: error.h:58
static av_always_inline AVRational av_inv_q(AVRational q)
Invert a rational.
Definition: rational.h:159
static int sub2video_prepare(InputStream *ist, InputFilter *ifilter)
int reconfiguration
Definition: ffmpeg.h:283
struct FilterGraph * graph
Definition: ffmpeg.h:258
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:62
sample_rates
void av_buffersink_set_frame_size(AVFilterContext *ctx, unsigned frame_size)
Set the frame size for an audio buffer sink.
Definition: buffersink.c:175
int av_buffersrc_parameters_set(AVFilterContext *ctx, AVBufferSrcParameters *param)
Initialize the buffersrc or abuffersrc filter with the provided parameters.
Definition: buffersrc.c:93
AVStream * st
Definition: muxing.c:54
#define AV_CODEC_CAP_LOSSLESS
Codec is lossless.
Definition: avcodec.h:1091
AVBufferRef * av_buffer_ref(AVBufferRef *buf)
Create a new reference to an AVBuffer.
Definition: buffer.c:93
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV444P and setting col...
Definition: pixfmt.h:76
char * key
Definition: dict.h:86
int den
Denominator.
Definition: rational.h:60
uint64_t channel_layout
Definition: ffmpeg.h:248
int copy_ts
Definition: ffmpeg_opt.c:111
AVFormatContext * ctx
Definition: ffmpeg.h:390
AVBufferRef * hw_device_ctx
Definition: ffmpeg_opt.c:93
#define AVERROR_DECODER_NOT_FOUND
Decoder not found.
Definition: error.h:52
int do_deinterlace
Definition: ffmpeg_opt.c:106
#define GROW_ARRAY(array, nb_elems)
Definition: cmdutils.h:586
pixel format definitions
char * avfilter
Definition: ffmpeg.h:498
uint8_t * name
Definition: ffmpeg.h:235
char * value
Definition: dict.h:87
AVFifoBuffer * av_fifo_alloc(unsigned int size)
Initialize an AVFifoBuffer.
Definition: fifo.c:43
int len
AVFilterContext * avfilter_graph_alloc_filter(AVFilterGraph *graph, const AVFilter *filter, const char *name)
Create a new filter instance in a filter graph.
int channels
number of audio channels
Definition: avcodec.h:2485
OutputFilter ** outputs
Definition: ffmpeg.h:287
InputFile ** input_files
Definition: ffmpeg.c:144
AVBufferSrcParameters * av_buffersrc_parameters_alloc(void)
Allocate a new AVBufferSrcParameters instance.
Definition: buffersrc.c:82
AVFormatContext * ctx
Definition: ffmpeg.h:553
int filtergraph_is_simple(FilterGraph *fg)
An instance of a filter.
Definition: avfilter.h:321
static char * choose_pix_fmts(OutputFilter *ofilter)
static void cleanup_filtergraph(FilterGraph *fg)
AVDictionary * encoder_opts
Definition: ffmpeg.h:502
int64_t av_get_default_channel_layout(int nb_channels)
Return default channel layout for a given number of channels.
static enum AVSampleFormat sample_fmts[]
Definition: adpcmenc.c:701
int height
Definition: frame.h:239
FILE * out
Definition: movenc.c:54
InputFilter ** inputs
Definition: ffmpeg.h:285
#define av_freep(p)
#define AV_DICT_IGNORE_SUFFIX
Return first entry in a dictionary whose first part corresponds to the search key, ignoring the suffix of the found key string.
Definition: dict.h:70
OutputFile ** output_files
Definition: ffmpeg.c:149
#define AV_LOG_FATAL
Something went wrong and recovery is not possible.
Definition: log.h:170
AVCodecParameters * codecpar
Definition: avformat.h:1252
enum AVSampleFormat * sample_fmts
array of supported sample formats, or NULL if unknown, array is terminated by -1
Definition: avcodec.h:3694
int format
Definition: ffmpeg.h:268
formats
Definition: signature.h:48
int init_simple_filtergraph(InputStream *ist, OutputStream *ost)
int discard
Definition: ffmpeg.h:294
const char * av_get_pix_fmt_name(enum AVPixelFormat pix_fmt)
Return the short name for a pixel format, NULL in case pix_fmt is unknown.
Definition: pixdesc.c:2249
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
Definition: avformat.h:926
void choose_sample_fmt(AVStream *st, AVCodec *codec)
Definition: ffmpeg_filter.c:92
int nb_inputs
Definition: ffmpeg.h:286
enum AVDiscard discard
Selects which packets can be discarded at will and do not need to be demuxed.
Definition: avformat.h:952
int index
Definition: ffmpeg.h:440
AVPixelFormat
Pixel format.
Definition: pixfmt.h:60
enum AVMediaType type
Definition: ffmpeg.h:263
AVFifoBuffer * frame_queue
Definition: ffmpeg.h:238
#define AUTO_INSERT_FILTER_INPUT(opt_name, filter_name, arg)
int av_opt_set(void *obj, const char *name, const char *val, int search_flags)
Definition: opt.c:451
int strict_std_compliance
strictly follow the standard (MPEG-4, ...).
Definition: avcodec.h:2941
const AVFilter * filter
the AVFilter of which this is an instance
Definition: avfilter.h:324
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
#define tb
Definition: regdef.h:68
int attribute_align_arg av_buffersrc_add_frame(AVFilterContext *ctx, AVFrame *frame)
Add a frame to the buffer source.
Definition: buffersrc.c:144
InputStream ** input_streams
Definition: ffmpeg.c:142
int avio_printf(AVIOContext *s, const char *fmt,...) av_printf_format(2
discard nothing
Definition: avcodec.h:816
const char * name
Definition: opengl_enc.c:103
static uint8_t tmp[11]
Definition: aes_ctr.c:26