FFmpeg  4.3
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[] =
52  AV_PIX_FMT_NONE};
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  //FIXME: This should check for AV_PIX_FMT_FLAG_ALPHA after PAL8 pixel format without alpha is implemented
69  int has_alpha = desc ? desc->nb_components % 2 == 0 : 0;
70  enum AVPixelFormat best= AV_PIX_FMT_NONE;
71 
74  }
75  for (; *p != AV_PIX_FMT_NONE; p++) {
76  best= avcodec_find_best_pix_fmt_of_2(best, *p, target, has_alpha, NULL);
77  if (*p == target)
78  break;
79  }
80  if (*p == AV_PIX_FMT_NONE) {
81  if (target != AV_PIX_FMT_NONE)
83  "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
84  av_get_pix_fmt_name(target),
85  codec->name,
86  av_get_pix_fmt_name(best));
87  return best;
88  }
89  }
90  return target;
91 }
92 
94 {
95  if (codec && codec->sample_fmts) {
96  const enum AVSampleFormat *p = codec->sample_fmts;
97  for (; *p != -1; p++) {
98  if (*p == st->codecpar->format)
99  break;
100  }
101  if (*p == -1) {
104  av_log(NULL, AV_LOG_ERROR, "Conversion will not be lossless.\n");
107  "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
109  codec->name,
111  st->codecpar->format = codec->sample_fmts[0];
112  }
113  }
114 }
115 
116 static char *choose_pix_fmts(OutputFilter *ofilter)
117 {
118  OutputStream *ost = ofilter->ost;
119  AVDictionaryEntry *strict_dict = av_dict_get(ost->encoder_opts, "strict", NULL, 0);
120  if (strict_dict)
121  // used by choose_pixel_fmt() and below
122  av_opt_set(ost->enc_ctx, "strict", strict_dict->value, 0);
123 
124  if (ost->keep_pix_fmt) {
127  if (ost->enc_ctx->pix_fmt == AV_PIX_FMT_NONE)
128  return NULL;
130  }
131  if (ost->enc_ctx->pix_fmt != AV_PIX_FMT_NONE) {
132  return av_strdup(av_get_pix_fmt_name(choose_pixel_fmt(ost->st, ost->enc_ctx, ost->enc, ost->enc_ctx->pix_fmt)));
133  } else if (ost->enc && ost->enc->pix_fmts) {
134  const enum AVPixelFormat *p;
135  AVIOContext *s = NULL;
136  uint8_t *ret;
137  int len;
138 
139  if (avio_open_dyn_buf(&s) < 0)
140  exit_program(1);
141 
142  p = ost->enc->pix_fmts;
145  }
146 
147  for (; *p != AV_PIX_FMT_NONE; p++) {
148  const char *name = av_get_pix_fmt_name(*p);
149  avio_printf(s, "%s|", name);
150  }
151  len = avio_close_dyn_buf(s, &ret);
152  ret[len - 1] = 0;
153  return ret;
154  } else
155  return NULL;
156 }
157 
158 /* Define a function for building a string containing a list of
159  * allowed formats. */
160 #define DEF_CHOOSE_FORMAT(suffix, type, var, supported_list, none, get_name) \
161 static char *choose_ ## suffix (OutputFilter *ofilter) \
162 { \
163  if (ofilter->var != none) { \
164  get_name(ofilter->var); \
165  return av_strdup(name); \
166  } else if (ofilter->supported_list) { \
167  const type *p; \
168  AVIOContext *s = NULL; \
169  uint8_t *ret; \
170  int len; \
171  \
172  if (avio_open_dyn_buf(&s) < 0) \
173  exit_program(1); \
174  \
175  for (p = ofilter->supported_list; *p != none; p++) { \
176  get_name(*p); \
177  avio_printf(s, "%s|", name); \
178  } \
179  len = avio_close_dyn_buf(s, &ret); \
180  ret[len - 1] = 0; \
181  return ret; \
182  } else \
183  return NULL; \
184 }
185 
186 //DEF_CHOOSE_FORMAT(pix_fmts, enum AVPixelFormat, format, formats, AV_PIX_FMT_NONE,
187 // GET_PIX_FMT_NAME)
188 
191 
194 
195 DEF_CHOOSE_FORMAT(channel_layouts, uint64_t, channel_layout, channel_layouts, 0,
197 
199 {
200  FilterGraph *fg = av_mallocz(sizeof(*fg));
201 
202  if (!fg)
203  exit_program(1);
204  fg->index = nb_filtergraphs;
205 
206  GROW_ARRAY(fg->outputs, fg->nb_outputs);
207  if (!(fg->outputs[0] = av_mallocz(sizeof(*fg->outputs[0]))))
208  exit_program(1);
209  fg->outputs[0]->ost = ost;
210  fg->outputs[0]->graph = fg;
211  fg->outputs[0]->format = -1;
212 
213  ost->filter = fg->outputs[0];
214 
215  GROW_ARRAY(fg->inputs, fg->nb_inputs);
216  if (!(fg->inputs[0] = av_mallocz(sizeof(*fg->inputs[0]))))
217  exit_program(1);
218  fg->inputs[0]->ist = ist;
219  fg->inputs[0]->graph = fg;
220  fg->inputs[0]->format = -1;
221 
222  fg->inputs[0]->frame_queue = av_fifo_alloc(8 * sizeof(AVFrame*));
223  if (!fg->inputs[0]->frame_queue)
224  exit_program(1);
225 
226  GROW_ARRAY(ist->filters, ist->nb_filters);
227  ist->filters[ist->nb_filters - 1] = fg->inputs[0];
228 
230  filtergraphs[nb_filtergraphs - 1] = fg;
231 
232  return 0;
233 }
234 
235 static char *describe_filter_link(FilterGraph *fg, AVFilterInOut *inout, int in)
236 {
237  AVFilterContext *ctx = inout->filter_ctx;
238  AVFilterPad *pads = in ? ctx->input_pads : ctx->output_pads;
239  int nb_pads = in ? ctx->nb_inputs : ctx->nb_outputs;
240  AVIOContext *pb;
241  uint8_t *res = NULL;
242 
243  if (avio_open_dyn_buf(&pb) < 0)
244  exit_program(1);
245 
246  avio_printf(pb, "%s", ctx->filter->name);
247  if (nb_pads > 1)
248  avio_printf(pb, ":%s", avfilter_pad_get_name(pads, inout->pad_idx));
249  avio_w8(pb, 0);
250  avio_close_dyn_buf(pb, &res);
251  return res;
252 }
253 
255 {
256  InputStream *ist = NULL;
258  int i;
259 
260  // TODO: support other filter types
261  if (type != AVMEDIA_TYPE_VIDEO && type != AVMEDIA_TYPE_AUDIO) {
262  av_log(NULL, AV_LOG_FATAL, "Only video and audio filters supported "
263  "currently.\n");
264  exit_program(1);
265  }
266 
267  if (in->name) {
269  AVStream *st = NULL;
270  char *p;
271  int file_idx = strtol(in->name, &p, 0);
272 
273  if (file_idx < 0 || file_idx >= nb_input_files) {
274  av_log(NULL, AV_LOG_FATAL, "Invalid file index %d in filtergraph description %s.\n",
275  file_idx, fg->graph_desc);
276  exit_program(1);
277  }
278  s = input_files[file_idx]->ctx;
279 
280  for (i = 0; i < s->nb_streams; i++) {
281  enum AVMediaType stream_type = s->streams[i]->codecpar->codec_type;
282  if (stream_type != type &&
283  !(stream_type == AVMEDIA_TYPE_SUBTITLE &&
284  type == AVMEDIA_TYPE_VIDEO /* sub2video hack */))
285  continue;
286  if (check_stream_specifier(s, s->streams[i], *p == ':' ? p + 1 : p) == 1) {
287  st = s->streams[i];
288  break;
289  }
290  }
291  if (!st) {
292  av_log(NULL, AV_LOG_FATAL, "Stream specifier '%s' in filtergraph description %s "
293  "matches no streams.\n", p, fg->graph_desc);
294  exit_program(1);
295  }
296  ist = input_streams[input_files[file_idx]->ist_index + st->index];
297  if (ist->user_set_discard == AVDISCARD_ALL) {
298  av_log(NULL, AV_LOG_FATAL, "Stream specifier '%s' in filtergraph description %s "
299  "matches a disabled input stream.\n", p, fg->graph_desc);
300  exit_program(1);
301  }
302  } else {
303  /* find the first unused stream of corresponding type */
304  for (i = 0; i < nb_input_streams; i++) {
305  ist = input_streams[i];
306  if (ist->user_set_discard == AVDISCARD_ALL)
307  continue;
308  if (ist->dec_ctx->codec_type == type && ist->discard)
309  break;
310  }
311  if (i == nb_input_streams) {
312  av_log(NULL, AV_LOG_FATAL, "Cannot find a matching stream for "
313  "unlabeled input pad %d on filter %s\n", in->pad_idx,
314  in->filter_ctx->name);
315  exit_program(1);
316  }
317  }
318  av_assert0(ist);
319 
320  ist->discard = 0;
322  ist->st->discard = AVDISCARD_NONE;
323 
324  GROW_ARRAY(fg->inputs, fg->nb_inputs);
325  if (!(fg->inputs[fg->nb_inputs - 1] = av_mallocz(sizeof(*fg->inputs[0]))))
326  exit_program(1);
327  fg->inputs[fg->nb_inputs - 1]->ist = ist;
328  fg->inputs[fg->nb_inputs - 1]->graph = fg;
329  fg->inputs[fg->nb_inputs - 1]->format = -1;
330  fg->inputs[fg->nb_inputs - 1]->type = ist->st->codecpar->codec_type;
331  fg->inputs[fg->nb_inputs - 1]->name = describe_filter_link(fg, in, 1);
332 
333  fg->inputs[fg->nb_inputs - 1]->frame_queue = av_fifo_alloc(8 * sizeof(AVFrame*));
334  if (!fg->inputs[fg->nb_inputs - 1]->frame_queue)
335  exit_program(1);
336 
337  GROW_ARRAY(ist->filters, ist->nb_filters);
338  ist->filters[ist->nb_filters - 1] = fg->inputs[fg->nb_inputs - 1];
339 }
340 
342 {
343  AVFilterInOut *inputs, *outputs, *cur;
344  AVFilterGraph *graph;
345  int ret = 0;
346 
347  /* this graph is only used for determining the kinds of inputs
348  * and outputs we have, and is discarded on exit from this function */
349  graph = avfilter_graph_alloc();
350  if (!graph)
351  return AVERROR(ENOMEM);
352  graph->nb_threads = 1;
353 
354  ret = avfilter_graph_parse2(graph, fg->graph_desc, &inputs, &outputs);
355  if (ret < 0)
356  goto fail;
357 
358  for (cur = inputs; cur; cur = cur->next)
359  init_input_filter(fg, cur);
360 
361  for (cur = outputs; cur;) {
362  GROW_ARRAY(fg->outputs, fg->nb_outputs);
363  fg->outputs[fg->nb_outputs - 1] = av_mallocz(sizeof(*fg->outputs[0]));
364  if (!fg->outputs[fg->nb_outputs - 1])
365  exit_program(1);
366 
367  fg->outputs[fg->nb_outputs - 1]->graph = fg;
368  fg->outputs[fg->nb_outputs - 1]->out_tmp = cur;
370  cur->pad_idx);
371  fg->outputs[fg->nb_outputs - 1]->name = describe_filter_link(fg, cur, 0);
372  cur = cur->next;
373  fg->outputs[fg->nb_outputs - 1]->out_tmp->next = NULL;
374  }
375 
376 fail:
377  avfilter_inout_free(&inputs);
378  avfilter_graph_free(&graph);
379  return ret;
380 }
381 
382 static int insert_trim(int64_t start_time, int64_t duration,
383  AVFilterContext **last_filter, int *pad_idx,
384  const char *filter_name)
385 {
386  AVFilterGraph *graph = (*last_filter)->graph;
388  const AVFilter *trim;
389  enum AVMediaType type = avfilter_pad_get_type((*last_filter)->output_pads, *pad_idx);
390  const char *name = (type == AVMEDIA_TYPE_VIDEO) ? "trim" : "atrim";
391  int ret = 0;
392 
393  if (duration == INT64_MAX && start_time == AV_NOPTS_VALUE)
394  return 0;
395 
396  trim = avfilter_get_by_name(name);
397  if (!trim) {
398  av_log(NULL, AV_LOG_ERROR, "%s filter not present, cannot limit "
399  "recording time.\n", name);
401  }
402 
403  ctx = avfilter_graph_alloc_filter(graph, trim, filter_name);
404  if (!ctx)
405  return AVERROR(ENOMEM);
406 
407  if (duration != INT64_MAX) {
408  ret = av_opt_set_int(ctx, "durationi", duration,
410  }
411  if (ret >= 0 && start_time != AV_NOPTS_VALUE) {
412  ret = av_opt_set_int(ctx, "starti", start_time,
414  }
415  if (ret < 0) {
416  av_log(ctx, AV_LOG_ERROR, "Error configuring the %s filter", name);
417  return ret;
418  }
419 
420  ret = avfilter_init_str(ctx, NULL);
421  if (ret < 0)
422  return ret;
423 
424  ret = avfilter_link(*last_filter, *pad_idx, ctx, 0);
425  if (ret < 0)
426  return ret;
427 
428  *last_filter = ctx;
429  *pad_idx = 0;
430  return 0;
431 }
432 
433 static int insert_filter(AVFilterContext **last_filter, int *pad_idx,
434  const char *filter_name, const char *args)
435 {
436  AVFilterGraph *graph = (*last_filter)->graph;
438  int ret;
439 
440  ret = avfilter_graph_create_filter(&ctx,
441  avfilter_get_by_name(filter_name),
442  filter_name, args, NULL, graph);
443  if (ret < 0)
444  return ret;
445 
446  ret = avfilter_link(*last_filter, *pad_idx, ctx, 0);
447  if (ret < 0)
448  return ret;
449 
450  *last_filter = ctx;
451  *pad_idx = 0;
452  return 0;
453 }
454 
456 {
457  char *pix_fmts;
458  OutputStream *ost = ofilter->ost;
459  OutputFile *of = output_files[ost->file_index];
460  AVFilterContext *last_filter = out->filter_ctx;
461  int pad_idx = out->pad_idx;
462  int ret;
463  char name[255];
464 
465  snprintf(name, sizeof(name), "out_%d_%d", ost->file_index, ost->index);
466  ret = avfilter_graph_create_filter(&ofilter->filter,
467  avfilter_get_by_name("buffersink"),
468  name, NULL, NULL, fg->graph);
469 
470  if (ret < 0)
471  return ret;
472 
473  if (ofilter->width || ofilter->height) {
474  char args[255];
476  AVDictionaryEntry *e = NULL;
477 
478  snprintf(args, sizeof(args), "%d:%d",
479  ofilter->width, ofilter->height);
480 
481  while ((e = av_dict_get(ost->sws_dict, "", e,
483  av_strlcatf(args, sizeof(args), ":%s=%s", e->key, e->value);
484  }
485 
486  snprintf(name, sizeof(name), "scaler_out_%d_%d",
487  ost->file_index, ost->index);
488  if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
489  name, args, NULL, fg->graph)) < 0)
490  return ret;
491  if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
492  return ret;
493 
494  last_filter = filter;
495  pad_idx = 0;
496  }
497 
498  if ((pix_fmts = choose_pix_fmts(ofilter))) {
500  snprintf(name, sizeof(name), "format_out_%d_%d",
501  ost->file_index, ost->index);
502  ret = avfilter_graph_create_filter(&filter,
503  avfilter_get_by_name("format"),
504  "format", pix_fmts, NULL, fg->graph);
505  av_freep(&pix_fmts);
506  if (ret < 0)
507  return ret;
508  if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
509  return ret;
510 
511  last_filter = filter;
512  pad_idx = 0;
513  }
514 
515  if (ost->frame_rate.num && 0) {
516  AVFilterContext *fps;
517  char args[255];
518 
519  snprintf(args, sizeof(args), "fps=%d/%d", ost->frame_rate.num,
520  ost->frame_rate.den);
521  snprintf(name, sizeof(name), "fps_out_%d_%d",
522  ost->file_index, ost->index);
524  name, args, NULL, fg->graph);
525  if (ret < 0)
526  return ret;
527 
528  ret = avfilter_link(last_filter, pad_idx, fps, 0);
529  if (ret < 0)
530  return ret;
531  last_filter = fps;
532  pad_idx = 0;
533  }
534 
535  snprintf(name, sizeof(name), "trim_out_%d_%d",
536  ost->file_index, ost->index);
537  ret = insert_trim(of->start_time, of->recording_time,
538  &last_filter, &pad_idx, name);
539  if (ret < 0)
540  return ret;
541 
542 
543  if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
544  return ret;
545 
546  return 0;
547 }
548 
550 {
551  OutputStream *ost = ofilter->ost;
552  OutputFile *of = output_files[ost->file_index];
553  AVCodecContext *codec = ost->enc_ctx;
554  AVFilterContext *last_filter = out->filter_ctx;
555  int pad_idx = out->pad_idx;
557  char name[255];
558  int ret;
559 
560  snprintf(name, sizeof(name), "out_%d_%d", ost->file_index, ost->index);
561  ret = avfilter_graph_create_filter(&ofilter->filter,
562  avfilter_get_by_name("abuffersink"),
563  name, NULL, NULL, fg->graph);
564  if (ret < 0)
565  return ret;
566  if ((ret = av_opt_set_int(ofilter->filter, "all_channel_counts", 1, AV_OPT_SEARCH_CHILDREN)) < 0)
567  return ret;
568 
569 #define AUTO_INSERT_FILTER(opt_name, filter_name, arg) do { \
570  AVFilterContext *filt_ctx; \
571  \
572  av_log(NULL, AV_LOG_INFO, opt_name " is forwarded to lavfi " \
573  "similarly to -af " filter_name "=%s.\n", arg); \
574  \
575  ret = avfilter_graph_create_filter(&filt_ctx, \
576  avfilter_get_by_name(filter_name), \
577  filter_name, arg, NULL, fg->graph); \
578  if (ret < 0) \
579  return ret; \
580  \
581  ret = avfilter_link(last_filter, pad_idx, filt_ctx, 0); \
582  if (ret < 0) \
583  return ret; \
584  \
585  last_filter = filt_ctx; \
586  pad_idx = 0; \
587 } while (0)
588  if (ost->audio_channels_mapped) {
589  int i;
590  AVBPrint pan_buf;
591  av_bprint_init(&pan_buf, 256, 8192);
592  av_bprintf(&pan_buf, "0x%"PRIx64,
594  for (i = 0; i < ost->audio_channels_mapped; i++)
595  if (ost->audio_channels_map[i] != -1)
596  av_bprintf(&pan_buf, "|c%d=c%d", i, ost->audio_channels_map[i]);
597 
598  AUTO_INSERT_FILTER("-map_channel", "pan", pan_buf.str);
599  av_bprint_finalize(&pan_buf, NULL);
600  }
601 
602  if (codec->channels && !codec->channel_layout)
604 
605  sample_fmts = choose_sample_fmts(ofilter);
606  sample_rates = choose_sample_rates(ofilter);
607  channel_layouts = choose_channel_layouts(ofilter);
608  if (sample_fmts || sample_rates || channel_layouts) {
610  char args[256];
611  args[0] = 0;
612 
613  if (sample_fmts)
614  av_strlcatf(args, sizeof(args), "sample_fmts=%s:",
615  sample_fmts);
616  if (sample_rates)
617  av_strlcatf(args, sizeof(args), "sample_rates=%s:",
618  sample_rates);
619  if (channel_layouts)
620  av_strlcatf(args, sizeof(args), "channel_layouts=%s:",
621  channel_layouts);
622 
623  av_freep(&sample_fmts);
624  av_freep(&sample_rates);
625  av_freep(&channel_layouts);
626 
627  snprintf(name, sizeof(name), "format_out_%d_%d",
628  ost->file_index, ost->index);
629  ret = avfilter_graph_create_filter(&format,
630  avfilter_get_by_name("aformat"),
631  name, args, NULL, fg->graph);
632  if (ret < 0)
633  return ret;
634 
635  ret = avfilter_link(last_filter, pad_idx, format, 0);
636  if (ret < 0)
637  return ret;
638 
639  last_filter = format;
640  pad_idx = 0;
641  }
642 
643  if (audio_volume != 256 && 0) {
644  char args[256];
645 
646  snprintf(args, sizeof(args), "%f", audio_volume / 256.);
647  AUTO_INSERT_FILTER("-vol", "volume", args);
648  }
649 
650  if (ost->apad && of->shortest) {
651  char args[256];
652  int i;
653 
654  for (i=0; i<of->ctx->nb_streams; i++)
656  break;
657 
658  if (i<of->ctx->nb_streams) {
659  snprintf(args, sizeof(args), "%s", ost->apad);
660  AUTO_INSERT_FILTER("-apad", "apad", args);
661  }
662  }
663 
664  snprintf(name, sizeof(name), "trim for output stream %d:%d",
665  ost->file_index, ost->index);
666  ret = insert_trim(of->start_time, of->recording_time,
667  &last_filter, &pad_idx, name);
668  if (ret < 0)
669  return ret;
670 
671  if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
672  return ret;
673 
674  return 0;
675 }
676 
678 {
679  if (!ofilter->ost) {
680  av_log(NULL, AV_LOG_FATAL, "Filter %s has an unconnected output\n", ofilter->name);
681  exit_program(1);
682  }
683 
684  switch (avfilter_pad_get_type(out->filter_ctx->output_pads, out->pad_idx)) {
685  case AVMEDIA_TYPE_VIDEO: return configure_output_video_filter(fg, ofilter, out);
686  case AVMEDIA_TYPE_AUDIO: return configure_output_audio_filter(fg, ofilter, out);
687  default: av_assert0(0);
688  }
689 }
690 
692 {
693  int i;
694  for (i = 0; i < nb_filtergraphs; i++) {
695  int n;
696  for (n = 0; n < filtergraphs[i]->nb_outputs; n++) {
697  OutputFilter *output = filtergraphs[i]->outputs[n];
698  if (!output->ost) {
699  av_log(NULL, AV_LOG_FATAL, "Filter %s has an unconnected output\n", output->name);
700  exit_program(1);
701  }
702  }
703  }
704 }
705 
706 static int sub2video_prepare(InputStream *ist, InputFilter *ifilter)
707 {
709  int i, w, h;
710 
711  /* Compute the size of the canvas for the subtitles stream.
712  If the subtitles codecpar has set a size, use it. Otherwise use the
713  maximum dimensions of the video streams in the same file. */
714  w = ifilter->width;
715  h = ifilter->height;
716  if (!(w && h)) {
717  for (i = 0; i < avf->nb_streams; i++) {
718  if (avf->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
719  w = FFMAX(w, avf->streams[i]->codecpar->width);
720  h = FFMAX(h, avf->streams[i]->codecpar->height);
721  }
722  }
723  if (!(w && h)) {
724  w = FFMAX(w, 720);
725  h = FFMAX(h, 576);
726  }
727  av_log(avf, AV_LOG_INFO, "sub2video: using %dx%d canvas\n", w, h);
728  }
729  ist->sub2video.w = ifilter->width = w;
730  ist->sub2video.h = ifilter->height = h;
731 
732  ifilter->width = ist->dec_ctx->width ? ist->dec_ctx->width : ist->sub2video.w;
733  ifilter->height = ist->dec_ctx->height ? ist->dec_ctx->height : ist->sub2video.h;
734 
735  /* rectangles are AV_PIX_FMT_PAL8, but we have no guarantee that the
736  palettes for all rectangles are identical or compatible */
737  ifilter->format = AV_PIX_FMT_RGB32;
738 
739  ist->sub2video.frame = av_frame_alloc();
740  if (!ist->sub2video.frame)
741  return AVERROR(ENOMEM);
742  ist->sub2video.last_pts = INT64_MIN;
743  ist->sub2video.end_pts = INT64_MIN;
744 
745  /* sub2video structure has been (re-)initialized.
746  Mark it as such so that the system will be
747  initialized with the first received heartbeat. */
748  ist->sub2video.initialize = 1;
749 
750  return 0;
751 }
752 
754  AVFilterInOut *in)
755 {
756  AVFilterContext *last_filter;
757  const AVFilter *buffer_filt = avfilter_get_by_name("buffer");
758  InputStream *ist = ifilter->ist;
760  AVRational tb = ist->framerate.num ? av_inv_q(ist->framerate) :
761  ist->st->time_base;
762  AVRational fr = ist->framerate;
763  AVRational sar;
764  AVBPrint args;
765  char name[255];
766  int ret, pad_idx = 0;
767  int64_t tsoffset = 0;
769 
770  if (!par)
771  return AVERROR(ENOMEM);
772  memset(par, 0, sizeof(*par));
773  par->format = AV_PIX_FMT_NONE;
774 
775  if (ist->dec_ctx->codec_type == AVMEDIA_TYPE_AUDIO) {
776  av_log(NULL, AV_LOG_ERROR, "Cannot connect video filter to audio input\n");
777  ret = AVERROR(EINVAL);
778  goto fail;
779  }
780 
781  if (!fr.num)
782  fr = av_guess_frame_rate(input_files[ist->file_index]->ctx, ist->st, NULL);
783 
785  ret = sub2video_prepare(ist, ifilter);
786  if (ret < 0)
787  goto fail;
788  }
789 
790  sar = ifilter->sample_aspect_ratio;
791  if(!sar.den)
792  sar = (AVRational){0,1};
794  av_bprintf(&args,
795  "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:"
796  "pixel_aspect=%d/%d",
797  ifilter->width, ifilter->height, ifilter->format,
798  tb.num, tb.den, sar.num, sar.den);
799  if (fr.num && fr.den)
800  av_bprintf(&args, ":frame_rate=%d/%d", fr.num, fr.den);
801  snprintf(name, sizeof(name), "graph %d input from stream %d:%d", fg->index,
802  ist->file_index, ist->st->index);
803 
804 
805  if ((ret = avfilter_graph_create_filter(&ifilter->filter, buffer_filt, name,
806  args.str, NULL, fg->graph)) < 0)
807  goto fail;
808  par->hw_frames_ctx = ifilter->hw_frames_ctx;
809  ret = av_buffersrc_parameters_set(ifilter->filter, par);
810  if (ret < 0)
811  goto fail;
812  av_freep(&par);
813  last_filter = ifilter->filter;
814 
815  if (ist->autorotate) {
816  double theta = get_rotation(ist->st);
817 
818  if (fabs(theta - 90) < 1.0) {
819  ret = insert_filter(&last_filter, &pad_idx, "transpose", "clock");
820  } else if (fabs(theta - 180) < 1.0) {
821  ret = insert_filter(&last_filter, &pad_idx, "hflip", NULL);
822  if (ret < 0)
823  return ret;
824  ret = insert_filter(&last_filter, &pad_idx, "vflip", NULL);
825  } else if (fabs(theta - 270) < 1.0) {
826  ret = insert_filter(&last_filter, &pad_idx, "transpose", "cclock");
827  } else if (fabs(theta) > 1.0) {
828  char rotate_buf[64];
829  snprintf(rotate_buf, sizeof(rotate_buf), "%f*PI/180", theta);
830  ret = insert_filter(&last_filter, &pad_idx, "rotate", rotate_buf);
831  }
832  if (ret < 0)
833  return ret;
834  }
835 
836  if (do_deinterlace) {
837  AVFilterContext *yadif;
838 
839  snprintf(name, sizeof(name), "deinterlace_in_%d_%d",
840  ist->file_index, ist->st->index);
841  if ((ret = avfilter_graph_create_filter(&yadif,
842  avfilter_get_by_name("yadif"),
843  name, "", NULL,
844  fg->graph)) < 0)
845  return ret;
846 
847  if ((ret = avfilter_link(last_filter, 0, yadif, 0)) < 0)
848  return ret;
849 
850  last_filter = yadif;
851  }
852 
853  snprintf(name, sizeof(name), "trim_in_%d_%d",
854  ist->file_index, ist->st->index);
855  if (copy_ts) {
856  tsoffset = f->start_time == AV_NOPTS_VALUE ? 0 : f->start_time;
858  tsoffset += f->ctx->start_time;
859  }
860  ret = insert_trim(((f->start_time == AV_NOPTS_VALUE) || !f->accurate_seek) ?
861  AV_NOPTS_VALUE : tsoffset, f->recording_time,
862  &last_filter, &pad_idx, name);
863  if (ret < 0)
864  return ret;
865 
866  if ((ret = avfilter_link(last_filter, 0, in->filter_ctx, in->pad_idx)) < 0)
867  return ret;
868  return 0;
869 fail:
870  av_freep(&par);
871 
872  return ret;
873 }
874 
876  AVFilterInOut *in)
877 {
878  AVFilterContext *last_filter;
879  const AVFilter *abuffer_filt = avfilter_get_by_name("abuffer");
880  InputStream *ist = ifilter->ist;
882  AVBPrint args;
883  char name[255];
884  int ret, pad_idx = 0;
885  int64_t tsoffset = 0;
886 
887  if (ist->dec_ctx->codec_type != AVMEDIA_TYPE_AUDIO) {
888  av_log(NULL, AV_LOG_ERROR, "Cannot connect audio filter to non audio input\n");
889  return AVERROR(EINVAL);
890  }
891 
893  av_bprintf(&args, "time_base=%d/%d:sample_rate=%d:sample_fmt=%s",
894  1, ifilter->sample_rate,
895  ifilter->sample_rate,
896  av_get_sample_fmt_name(ifilter->format));
897  if (ifilter->channel_layout)
898  av_bprintf(&args, ":channel_layout=0x%"PRIx64,
899  ifilter->channel_layout);
900  else
901  av_bprintf(&args, ":channels=%d", ifilter->channels);
902  snprintf(name, sizeof(name), "graph_%d_in_%d_%d", fg->index,
903  ist->file_index, ist->st->index);
904 
905  if ((ret = avfilter_graph_create_filter(&ifilter->filter, abuffer_filt,
906  name, args.str, NULL,
907  fg->graph)) < 0)
908  return ret;
909  last_filter = ifilter->filter;
910 
911 #define AUTO_INSERT_FILTER_INPUT(opt_name, filter_name, arg) do { \
912  AVFilterContext *filt_ctx; \
913  \
914  av_log(NULL, AV_LOG_INFO, opt_name " is forwarded to lavfi " \
915  "similarly to -af " filter_name "=%s.\n", arg); \
916  \
917  snprintf(name, sizeof(name), "graph_%d_%s_in_%d_%d", \
918  fg->index, filter_name, ist->file_index, ist->st->index); \
919  ret = avfilter_graph_create_filter(&filt_ctx, \
920  avfilter_get_by_name(filter_name), \
921  name, arg, NULL, fg->graph); \
922  if (ret < 0) \
923  return ret; \
924  \
925  ret = avfilter_link(last_filter, 0, filt_ctx, 0); \
926  if (ret < 0) \
927  return ret; \
928  \
929  last_filter = filt_ctx; \
930 } while (0)
931 
932  if (audio_sync_method > 0) {
933  char args[256] = {0};
934 
935  av_strlcatf(args, sizeof(args), "async=%d", audio_sync_method);
936  if (audio_drift_threshold != 0.1)
937  av_strlcatf(args, sizeof(args), ":min_hard_comp=%f", audio_drift_threshold);
938  if (!fg->reconfiguration)
939  av_strlcatf(args, sizeof(args), ":first_pts=0");
940  AUTO_INSERT_FILTER_INPUT("-async", "aresample", args);
941  }
942 
943 // if (ost->audio_channels_mapped) {
944 // int i;
945 // AVBPrint pan_buf;
946 // av_bprint_init(&pan_buf, 256, 8192);
947 // av_bprintf(&pan_buf, "0x%"PRIx64,
948 // av_get_default_channel_layout(ost->audio_channels_mapped));
949 // for (i = 0; i < ost->audio_channels_mapped; i++)
950 // if (ost->audio_channels_map[i] != -1)
951 // av_bprintf(&pan_buf, ":c%d=c%d", i, ost->audio_channels_map[i]);
952 // AUTO_INSERT_FILTER_INPUT("-map_channel", "pan", pan_buf.str);
953 // av_bprint_finalize(&pan_buf, NULL);
954 // }
955 
956  if (audio_volume != 256) {
957  char args[256];
958 
959  av_log(NULL, AV_LOG_WARNING, "-vol has been deprecated. Use the volume "
960  "audio filter instead.\n");
961 
962  snprintf(args, sizeof(args), "%f", audio_volume / 256.);
963  AUTO_INSERT_FILTER_INPUT("-vol", "volume", args);
964  }
965 
966  snprintf(name, sizeof(name), "trim for input stream %d:%d",
967  ist->file_index, ist->st->index);
968  if (copy_ts) {
969  tsoffset = f->start_time == AV_NOPTS_VALUE ? 0 : f->start_time;
971  tsoffset += f->ctx->start_time;
972  }
973  ret = insert_trim(((f->start_time == AV_NOPTS_VALUE) || !f->accurate_seek) ?
974  AV_NOPTS_VALUE : tsoffset, f->recording_time,
975  &last_filter, &pad_idx, name);
976  if (ret < 0)
977  return ret;
978 
979  if ((ret = avfilter_link(last_filter, 0, in->filter_ctx, in->pad_idx)) < 0)
980  return ret;
981 
982  return 0;
983 }
984 
986  AVFilterInOut *in)
987 {
988  if (!ifilter->ist->dec) {
990  "No decoder for stream #%d:%d, filtering impossible\n",
991  ifilter->ist->file_index, ifilter->ist->st->index);
993  }
994  switch (avfilter_pad_get_type(in->filter_ctx->input_pads, in->pad_idx)) {
995  case AVMEDIA_TYPE_VIDEO: return configure_input_video_filter(fg, ifilter, in);
996  case AVMEDIA_TYPE_AUDIO: return configure_input_audio_filter(fg, ifilter, in);
997  default: av_assert0(0);
998  }
999 }
1000 
1002 {
1003  int i;
1004  for (i = 0; i < fg->nb_outputs; i++)
1005  fg->outputs[i]->filter = (AVFilterContext *)NULL;
1006  for (i = 0; i < fg->nb_inputs; i++)
1007  fg->inputs[i]->filter = (AVFilterContext *)NULL;
1008  avfilter_graph_free(&fg->graph);
1009 }
1010 
1012 {
1013  AVFilterInOut *inputs, *outputs, *cur;
1014  int ret, i, simple = filtergraph_is_simple(fg);
1015  const char *graph_desc = simple ? fg->outputs[0]->ost->avfilter :
1016  fg->graph_desc;
1017 
1018  cleanup_filtergraph(fg);
1019  if (!(fg->graph = avfilter_graph_alloc()))
1020  return AVERROR(ENOMEM);
1021 
1022  if (simple) {
1023  OutputStream *ost = fg->outputs[0]->ost;
1024  char args[512];
1025  AVDictionaryEntry *e = NULL;
1026 
1028 
1029  args[0] = 0;
1030  while ((e = av_dict_get(ost->sws_dict, "", e,
1032  av_strlcatf(args, sizeof(args), "%s=%s:", e->key, e->value);
1033  }
1034  if (strlen(args))
1035  args[strlen(args)-1] = 0;
1036  fg->graph->scale_sws_opts = av_strdup(args);
1037 
1038  args[0] = 0;
1039  while ((e = av_dict_get(ost->swr_opts, "", e,
1041  av_strlcatf(args, sizeof(args), "%s=%s:", e->key, e->value);
1042  }
1043  if (strlen(args))
1044  args[strlen(args)-1] = 0;
1045  av_opt_set(fg->graph, "aresample_swr_opts", args, 0);
1046 
1047  args[0] = '\0';
1048  while ((e = av_dict_get(fg->outputs[0]->ost->resample_opts, "", e,
1050  av_strlcatf(args, sizeof(args), "%s=%s:", e->key, e->value);
1051  }
1052  if (strlen(args))
1053  args[strlen(args) - 1] = '\0';
1054 
1055  e = av_dict_get(ost->encoder_opts, "threads", NULL, 0);
1056  if (e)
1057  av_opt_set(fg->graph, "threads", e->value, 0);
1058  } else {
1060  }
1061 
1062  if ((ret = avfilter_graph_parse2(fg->graph, graph_desc, &inputs, &outputs)) < 0)
1063  goto fail;
1064 
1065  ret = hw_device_setup_for_filter(fg);
1066  if (ret < 0)
1067  goto fail;
1068 
1069  if (simple && (!inputs || inputs->next || !outputs || outputs->next)) {
1070  const char *num_inputs;
1071  const char *num_outputs;
1072  if (!outputs) {
1073  num_outputs = "0";
1074  } else if (outputs->next) {
1075  num_outputs = ">1";
1076  } else {
1077  num_outputs = "1";
1078  }
1079  if (!inputs) {
1080  num_inputs = "0";
1081  } else if (inputs->next) {
1082  num_inputs = ">1";
1083  } else {
1084  num_inputs = "1";
1085  }
1086  av_log(NULL, AV_LOG_ERROR, "Simple filtergraph '%s' was expected "
1087  "to have exactly 1 input and 1 output."
1088  " However, it had %s input(s) and %s output(s)."
1089  " Please adjust, or use a complex filtergraph (-filter_complex) instead.\n",
1090  graph_desc, num_inputs, num_outputs);
1091  ret = AVERROR(EINVAL);
1092  goto fail;
1093  }
1094 
1095  for (cur = inputs, i = 0; cur; cur = cur->next, i++)
1096  if ((ret = configure_input_filter(fg, fg->inputs[i], cur)) < 0) {
1097  avfilter_inout_free(&inputs);
1098  avfilter_inout_free(&outputs);
1099  goto fail;
1100  }
1101  avfilter_inout_free(&inputs);
1102 
1103  for (cur = outputs, i = 0; cur; cur = cur->next, i++)
1104  configure_output_filter(fg, fg->outputs[i], cur);
1105  avfilter_inout_free(&outputs);
1106 
1107  if ((ret = avfilter_graph_config(fg->graph, NULL)) < 0)
1108  goto fail;
1109 
1110  /* limit the lists of allowed formats to the ones selected, to
1111  * make sure they stay the same if the filtergraph is reconfigured later */
1112  for (i = 0; i < fg->nb_outputs; i++) {
1113  OutputFilter *ofilter = fg->outputs[i];
1114  AVFilterContext *sink = ofilter->filter;
1115 
1116  ofilter->format = av_buffersink_get_format(sink);
1117 
1118  ofilter->width = av_buffersink_get_w(sink);
1119  ofilter->height = av_buffersink_get_h(sink);
1120 
1121  ofilter->sample_rate = av_buffersink_get_sample_rate(sink);
1123  }
1124 
1125  fg->reconfiguration = 1;
1126 
1127  for (i = 0; i < fg->nb_outputs; i++) {
1128  OutputStream *ost = fg->outputs[i]->ost;
1129  if (!ost->enc) {
1130  /* identical to the same check in ffmpeg.c, needed because
1131  complex filter graphs are initialized earlier */
1132  av_log(NULL, AV_LOG_ERROR, "Encoder (codec %s) not found for output stream #%d:%d\n",
1133  avcodec_get_name(ost->st->codecpar->codec_id), ost->file_index, ost->index);
1134  ret = AVERROR(EINVAL);
1135  goto fail;
1136  }
1137  if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1138  !(ost->enc->capabilities & AV_CODEC_CAP_VARIABLE_FRAME_SIZE))
1140  ost->enc_ctx->frame_size);
1141  }
1142 
1143  for (i = 0; i < fg->nb_inputs; i++) {
1144  while (av_fifo_size(fg->inputs[i]->frame_queue)) {
1145  AVFrame *tmp;
1146  av_fifo_generic_read(fg->inputs[i]->frame_queue, &tmp, sizeof(tmp), NULL);
1147  ret = av_buffersrc_add_frame(fg->inputs[i]->filter, tmp);
1148  av_frame_free(&tmp);
1149  if (ret < 0)
1150  goto fail;
1151  }
1152  }
1153 
1154  /* send the EOFs for the finished inputs */
1155  for (i = 0; i < fg->nb_inputs; i++) {
1156  if (fg->inputs[i]->eof) {
1157  ret = av_buffersrc_add_frame(fg->inputs[i]->filter, NULL);
1158  if (ret < 0)
1159  goto fail;
1160  }
1161  }
1162 
1163  /* process queued up subtitle packets */
1164  for (i = 0; i < fg->nb_inputs; i++) {
1165  InputStream *ist = fg->inputs[i]->ist;
1166  if (ist->sub2video.sub_queue && ist->sub2video.frame) {
1167  while (av_fifo_size(ist->sub2video.sub_queue)) {
1168  AVSubtitle tmp;
1169  av_fifo_generic_read(ist->sub2video.sub_queue, &tmp, sizeof(tmp), NULL);
1170  sub2video_update(ist, INT64_MIN, &tmp);
1171  avsubtitle_free(&tmp);
1172  }
1173  }
1174  }
1175 
1176  return 0;
1177 
1178 fail:
1179  cleanup_filtergraph(fg);
1180  return ret;
1181 }
1182 
1184 {
1185  av_buffer_unref(&ifilter->hw_frames_ctx);
1186 
1187  ifilter->format = frame->format;
1188 
1189  ifilter->width = frame->width;
1190  ifilter->height = frame->height;
1191  ifilter->sample_aspect_ratio = frame->sample_aspect_ratio;
1192 
1193  ifilter->sample_rate = frame->sample_rate;
1194  ifilter->channels = frame->channels;
1195  ifilter->channel_layout = frame->channel_layout;
1196 
1197  if (frame->hw_frames_ctx) {
1198  ifilter->hw_frames_ctx = av_buffer_ref(frame->hw_frames_ctx);
1199  if (!ifilter->hw_frames_ctx)
1200  return AVERROR(ENOMEM);
1201  }
1202 
1203  return 0;
1204 }
1205 
1207 {
1208  int i;
1209  for (i = 0; i < fg->nb_inputs; i++)
1210  if (fg->inputs[i]->ist == ist)
1211  return 1;
1212  return 0;
1213 }
1214 
1216 {
1217  return !fg->graph_desc;
1218 }
void avfilter_graph_set_auto_convert(AVFilterGraph *graph, unsigned flags)
Enable or disable automatic format conversion inside the graph.
#define NULL
Definition: coverity.c:32
int width
Definition: ffmpeg.h:269
int keep_pix_fmt
Definition: ffmpeg.h:528
Bytestream IO Context.
Definition: avio.h:161
int64_t recording_time
desired length of the resulting file in microseconds == AV_TIME_BASE units
Definition: ffmpeg.h:558
void av_bprintf(AVBPrint *buf, const char *fmt,...)
Definition: bprint.c:94
uint8_t * name
Definition: ffmpeg.h:262
int nb_outputs
Definition: ffmpeg.h:291
static const char * format[]
Definition: af_aiir.c:339
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:509
#define DECODING_FOR_FILTER
Definition: ffmpeg.h:301
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2549
This structure describes decoded (raw) audio or video data.
Definition: frame.h:300
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:1401
AVRational frame_rate
Definition: ffmpeg.h:477
double get_rotation(AVStream *st)
Definition: cmdutils.c:2200
int accurate_seek
Definition: ffmpeg.h:413
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:71
misc image utilities
AVFilterGraph * avfilter_graph_alloc(void)
Allocate a filter graph.
Definition: avfiltergraph.c:83
#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:79
AVRational framerate
Definition: ffmpeg.h:332
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:203
struct AVFilterInOut * next
next input/input in the list, NULL if this is the last
Definition: avfilter.h:1014
int height
Definition: ffmpeg.h:246
int check_stream_specifier(AVFormatContext *s, AVStream *st, const char *spec)
Check if the given stream matches a stream specifier.
Definition: cmdutils.c:2096
AVFilterInOut * out_tmp
Definition: ffmpeg.h:265
enum AVMediaType avfilter_pad_get_type(const AVFilterPad *pads, int pad_idx)
Get the type of an AVFilterPad.
Definition: avfilter.c:1034
int decoding_needed
Definition: ffmpeg.h:299
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: codec_par.h:60
static int insert_trim(int64_t start_time, int64_t duration, AVFilterContext **last_filter, int *pad_idx, const char *filter_name)
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:877
int init_complex_filtergraph(FilterGraph *fg)
void avfilter_graph_free(AVFilterGraph **graph)
Free a graph, destroy its links, and set *graph to NULL.
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:736
discard all
Definition: avcodec.h:236
int nb_input_streams
Definition: ffmpeg.c:148
#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: codec.h:190
int avio_open_dyn_buf(AVIOContext **s)
Open a write only memory stream.
Definition: aviobuf.c:1356
int64_t start_time
start time in microseconds == AV_TIME_BASE units
Definition: ffmpeg.h:559
int av_bprint_finalize(AVBPrint *buf, char **ret_str)
Finalize a print buffer.
Definition: bprint.c:235
int index
Definition: ffmpeg.h:282
char * scale_sws_opts
sws options to use for the auto-inserted scale filters
Definition: avfilter.h:845
struct FilterGraph * graph
Definition: ffmpeg.h:237
AVBufferRef * hw_frames_ctx
For hwaccel-format frames, this should be a reference to the AVHWFramesContext describing the frame...
Definition: frame.h:639
Format I/O context.
Definition: avformat.h:1351
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:5135
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:236
char * name
name of this filter instance
Definition: avfilter.h:343
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
AVFilterGraph * graph
Definition: ffmpeg.h:285
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:349
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, int clip)
Definition: cfhd.c:196
int user_set_discard
Definition: ffmpeg.h:298
static int configure_input_video_filter(FilterGraph *fg, InputFilter *ifilter, AVFilterInOut *in)
static int64_t start_time
Definition: ffplay.c:332
uint8_t
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
Definition: frame.c:190
AVDictionary * sws_dict
Definition: ffmpeg.h:508
int width
Video only.
Definition: codec_par.h:126
void check_filter_outputs(void)
AVOptions.
#define f(width, name)
Definition: cbs_vp9.c:255
static int configure_output_video_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
#define AV_CODEC_PROP_LOSSLESS
Codec supports lossless compression.
Definition: codec_desc.h:82
int configure_output_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
int audio_sync_method
Definition: ffmpeg_opt.c:152
int shortest
Definition: ffmpeg.h:562
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1419
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:239
int nb_threads
Maximum number of threads used by filters in this graph.
Definition: avfilter.h:869
AVDictionary * resample_opts
Definition: ffmpeg.h:510
AVFilterContext * filter
Definition: ffmpeg.h:259
planar YUV 4:2:2, 16bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV422P and setting col...
Definition: pixfmt.h:79
int nb_input_files
Definition: ffmpeg.c:150
AVCodec * dec
Definition: ffmpeg.h:304
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:407
int ist_in_filtergraph(FilterGraph *fg, InputStream *ist)
int file_index
Definition: ffmpeg.h:295
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:172
void sub2video_update(InputStream *ist, int64_t heartbeat_pts, AVSubtitle *sub)
Definition: ffmpeg.c:240
#define FF_COMPLIANCE_UNOFFICIAL
Allow unofficial extensions.
Definition: avcodec.h:1593
A filter pad used for either input or output.
Definition: internal.h:54
unsigned int initialize
marks if sub2video_update should force an initialization
Definition: ffmpeg.h:351
uint64_t channel_layout
Definition: ffmpeg.h:273
AVFifoBuffer * sub_queue
queue of AVSubtitle* before filter init
Definition: ffmpeg.h:348
static int insert_filter(AVFilterContext **last_filter, int *pad_idx, const char *filter_name, const char *args)
enum AVCodecID id
Definition: codec.h:204
AVFilterPad * input_pads
array of input pads
Definition: avfilter.h:345
int hw_device_setup_for_filter(FilterGraph *fg)
Definition: ffmpeg_hw.c:525
AVRational sample_aspect_ratio
Definition: ffmpeg.h:247
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:269
AVCodecID
Identify the syntax and semantics of the bitstream.
Definition: codec_id.h:46
int width
Definition: frame.h:358
#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:638
int sample_rate
Definition: ffmpeg.h:249
FilterGraph ** filtergraphs
Definition: ffmpeg.c:157
AVFilterContext * filter
Definition: ffmpeg.h:235
#define AVERROR(e)
Definition: error.h:43
int format
Definition: ffmpeg.h:244
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:203
unsigned nb_outputs
number of output pads
Definition: avfilter.h:351
Display matrix.
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:95
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: codec_par.h:56
int av_opt_set_int(void *obj, const char *name, int64_t val, int search_flags)
Definition: opt.c:586
simple assert() macros that are a bit more flexible than ISO C assert().
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:239
const char * name
Name of the codec implementation.
Definition: codec.h:197
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:255
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:123
#define AV_CODEC_CAP_VARIABLE_FRAME_SIZE
Audio encoder supports receiving a different number of samples in each call.
Definition: codec.h:122
static int configure_output_audio_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
uint64_t channel_layout
Audio channel layout.
Definition: avcodec.h:1237
int filter_nbthreads
Definition: ffmpeg_opt.c:171
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:70
OutputFilter * filter
Definition: ffmpeg.h:502
uint64_t channel_layout
Channel layout of the audio data.
Definition: frame.h:477
int props
Codec properties, a combination of AV_CODEC_PROP_* flags.
Definition: codec_desc.h:54
const AVFilter * avfilter_get_by_name(const char *name)
Get a filter definition matching the given name.
Definition: allfilters.c:520
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
Definition: avformat.h:1407
uint8_t nb_components
The number of components each pixel has, (1-4)
Definition: pixdesc.h:83
const char * name
Definition: qsvenc.c:46
int channels
number of audio channels, only used for audio.
Definition: frame.h:606
audio channel layout utility functions
enum AVPixelFormat * pix_fmts
array of supported pixel formats, or NULL if unknown, array is terminated by -1
Definition: codec.h:211
This structure contains the parameters describing the frames that will be passed to this filter...
Definition: buffersrc.h:73
unsigned nb_inputs
number of input pads
Definition: avfilter.h:347
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:78
#define AV_OPT_SEARCH_CHILDREN
Search in possible children of the given object first.
Definition: opt.h:558
struct OutputStream * ost
Definition: ffmpeg.h:260
int width
picture width / height.
Definition: avcodec.h:699
uint8_t w
Definition: llviddspenc.c:38
char * apad
Definition: ffmpeg.h:511
int width
Definition: ffmpeg.h:246
AVFormatContext * ctx
Definition: movenc.c:48
int nb_filtergraphs
Definition: ffmpeg.c:158
#define s(width, name)
Definition: cbs_vp9.c:257
int audio_channels_mapped
Definition: ffmpeg.h:497
packed RGB 8:8:8, 24bpp, BGRBGR...
Definition: pixfmt.h:69
enum AVCodecID codec_id
Definition: vaapi_decode.c:369
int height
Definition: ffmpeg.h:269
static const AVFilterPad inputs[]
Definition: af_acontrast.c:193
int sample_rate
Definition: ffmpeg.h:272
#define GET_SAMPLE_FMT_NAME(sample_fmt)
Definition: cmdutils.h:631
AVFilterContext * filter_ctx
filter context associated to this input/output
Definition: avfilter.h:1008
static const AVFilterPad outputs[]
Definition: af_acontrast.c:203
void exit_program(int ret)
Wraps exit with a program-specific cleanup routine.
Definition: cmdutils.c:133
AVCodecContext * enc
Definition: muxing.c:55
int start_at_zero
Definition: ffmpeg_opt.c:161
int avfilter_init_str(AVFilterContext *filter, const char *args)
Initialize a filter with the supplied parameters.
Definition: avfilter.c:919
int audio_volume
Definition: ffmpeg_opt.c:151
Stream structure.
Definition: avformat.h:876
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:1003
int format
format of the frame, -1 if unknown or unset Values correspond to enum AVPixelFormat for video frames...
Definition: frame.h:373
InputFilter ** filters
Definition: ffmpeg.h:358
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:634
int64_t recording_time
Definition: ffmpeg.h:408
int frame_size
Number of samples per channel in an audio frame.
Definition: avcodec.h:1206
AVBufferRef * hw_frames_ctx
Video with a hwaccel pixel format only.
Definition: buffersrc.h:106
AVStream * st
Definition: ffmpeg.h:296
sample_rate
#define AV_LOG_INFO
Standard information.
Definition: log.h:187
#define AV_BPRINT_SIZE_AUTOMATIC
char * av_strdup(const char *s)
Duplicate a string.
Definition: mem.c:255
static int configure_input_audio_filter(FilterGraph *fg, InputFilter *ifilter, AVFilterInOut *in)
enum AVMediaType codec_type
Definition: avcodec.h:534
AVSampleFormat
Audio sample formats.
Definition: samplefmt.h:58
enum AVCodecID codec_id
Definition: avcodec.h:536
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:397
const char * graph_desc
Definition: ffmpeg.h:283
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:406
void avio_w8(AVIOContext *s, int b)
Definition: aviobuf.c:191
main external API structure.
Definition: avcodec.h:526
#define AV_PIX_FMT_RGB32
Definition: pixfmt.h:370
void avsubtitle_free(AVSubtitle *sub)
Free all allocated data in the given subtitle struct.
Definition: utils.c:1102
AVRational sample_aspect_ratio
Sample aspect ratio for the video frame, 0/1 if unknown/unspecified.
Definition: frame.h:388
int ifilter_parameters_from_frame(InputFilter *ifilter, const AVFrame *frame)
AVCodecContext * enc_ctx
Definition: ffmpeg.h:465
#define AUTO_INSERT_FILTER(opt_name, filter_name, arg)
AVBufferRef * hw_frames_ctx
Definition: ffmpeg.h:253
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi - 0x80) *(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi - 0x80) *(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(const int16_t *) pi >> 8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t, *(const int16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t, *(const int16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(const int32_t *) pi >> 24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t, *(const int32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t, *(const int32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(const float *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(const float *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(const float *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(const double *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(const double *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(const double *) pi *(1U<< 31)))) #define SET_CONV_FUNC_GROUP(ofmt, ifmt) static void set_generic_function(AudioConvert *ac) { } void ff_audio_convert_free(AudioConvert **ac) { if(! *ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);} AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels, int sample_rate, int apply_map) { AudioConvert *ac;int in_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) return NULL;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);return NULL;} return ac;} 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;} else if(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;else ac->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);return ac;} int ff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in) { int use_generic=1;int len=in->nb_samples;int p;if(ac->dc) { av_log(ac->avr, AV_LOG_TRACE, "%d samples - audio_convert: %s to %s (dithered)\", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));return ff_convert_dither(ac-> in
int channels
Definition: ffmpeg.h:250
int * audio_channels_map
Definition: ffmpeg.h:496
static const uint16_t channel_layouts[7]
Definition: dca_lbr.c:113
int sample_rate
Sample rate of the audio data.
Definition: frame.h:472
Filter definition.
Definition: avfilter.h:144
int pad_idx
index of the filt_ctx pad to use for linking
Definition: avfilter.h:1011
Rational number (pair of numerator and denominator).
Definition: rational.h:58
int file_index
Definition: ffmpeg.h:444
AVCodecContext * dec_ctx
Definition: ffmpeg.h:303
cl_device_type type
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:240
const char * name
Filter name.
Definition: avfilter.h:148
int av_buffersink_get_w(const AVFilterContext *ctx)
int autorotate
Definition: ffmpeg.h:336
#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:1029
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:275
This struct describes the properties of a single codec described by an AVCodecID. ...
Definition: codec_desc.h:38
float audio_drift_threshold
Definition: ffmpeg_opt.c:147
char * name
unique name for this input/output in the list
Definition: avfilter.h:1005
int nb_filters
Definition: ffmpeg.h:359
all automatic conversions disabled
Definition: avfilter.h:976
int64_t start_time
Position of the first frame of the component, in AV_TIME_BASE fractional seconds. ...
Definition: avformat.h:1456
#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)
static AVStream * ost
int reconfiguration
Definition: ffmpeg.h:286
struct FilterGraph * graph
Definition: ffmpeg.h:261
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
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:98
AVStream * st
Definition: muxing.c:54
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:80
const char * avcodec_get_name(enum AVCodecID id)
Get the name of a codec.
Definition: utils.c:1184
char * key
Definition: dict.h:86
int den
Denominator.
Definition: rational.h:60
uint64_t channel_layout
Definition: ffmpeg.h:251
int copy_ts
Definition: ffmpeg_opt.c:160
AVFormatContext * ctx
Definition: ffmpeg.h:394
#define AVERROR_DECODER_NOT_FOUND
Decoder not found.
Definition: error.h:52
int do_deinterlace
Definition: ffmpeg_opt.c:155
#define GROW_ARRAY(array, nb_elems)
Definition: cmdutils.h:622
pixel format definitions
char * avfilter
Definition: ffmpeg.h:503
uint8_t * name
Definition: ffmpeg.h:238
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:1187
OutputFilter ** outputs
Definition: ffmpeg.h:290
InputFile ** input_files
Definition: ffmpeg.c:149
AVBufferSrcParameters * av_buffersrc_parameters_alloc(void)
Allocate a new AVBufferSrcParameters instance.
Definition: buffersrc.c:87
AVFormatContext * ctx
Definition: ffmpeg.h:555
const AVCodecDescriptor * avcodec_descriptor_get(enum AVCodecID id)
Definition: codec_desc.c:3394
int filtergraph_is_simple(FilterGraph *fg)
An instance of a filter.
Definition: avfilter.h:338
static char * choose_pix_fmts(OutputFilter *ofilter)
static void cleanup_filtergraph(FilterGraph *fg)
AVDictionary * encoder_opts
Definition: ffmpeg.h:507
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:731
int height
Definition: frame.h:358
FILE * out
Definition: movenc.c:54
InputFilter ** inputs
Definition: ffmpeg.h:288
#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:154
#define AV_LOG_FATAL
Something went wrong and recovery is not possible.
Definition: log.h:170
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:1023
enum AVSampleFormat * sample_fmts
array of supported sample formats, or NULL if unknown, array is terminated by -1
Definition: codec.h:213
int format
Definition: ffmpeg.h:271
formats
Definition: signature.h:48
int init_simple_filtergraph(InputStream *ist, OutputStream *ost)
int discard
Definition: ffmpeg.h:297
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:2465
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
Definition: avformat.h:905
void choose_sample_fmt(AVStream *st, AVCodec *codec)
Definition: ffmpeg_filter.c:93
int nb_inputs
Definition: ffmpeg.h:289
enum AVDiscard discard
Selects which packets can be discarded at will and do not need to be demuxed.
Definition: avformat.h:931
int index
Definition: ffmpeg.h:445
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
enum AVMediaType type
Definition: ffmpeg.h:266
AVFifoBuffer * frame_queue
Definition: ffmpeg.h:241
#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:465
int strict_std_compliance
strictly follow the standard (MPEG-4, ...).
Definition: avcodec.h:1589
const AVFilter * filter
the AVFilter of which this is an instance
Definition: avfilter.h:341
#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:147
InputStream ** input_streams
Definition: ffmpeg.c:147
int avio_printf(AVIOContext *s, const char *fmt,...) av_printf_format(2
Writes a formatted string to the context.
discard nothing
Definition: avcodec.h:230
static uint8_t tmp[11]
Definition: aes_ctr.c:26