FFmpegKit iOS / macOS / tvOS API  4.4
fftools_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 /*
22  * CHANGES 08.2018
23  * --------------------------------------------------------
24  * - fftools_ prefix added to file name and parent header
25  *
26  * CHANGES 07.2018
27  * --------------------------------------------------------
28  * - Unused headers removed
29  */
30 
31 #include <stdint.h>
32 
33 #include "fftools_ffmpeg.h"
34 
35 #include "libavfilter/avfilter.h"
36 #include "libavfilter/buffersink.h"
37 #include "libavfilter/buffersrc.h"
38 
39 #include "libavutil/avassert.h"
40 #include "libavutil/avstring.h"
41 #include "libavutil/bprint.h"
42 #include "libavutil/channel_layout.h"
43 #include "libavutil/display.h"
44 #include "libavutil/opt.h"
45 #include "libavutil/pixdesc.h"
46 #include "libavutil/pixfmt.h"
47 #include "libavutil/imgutils.h"
48 #include "libavutil/samplefmt.h"
49 
50 static const enum AVPixelFormat *get_compliance_unofficial_pix_fmts(enum AVCodecID codec_id, const enum AVPixelFormat default_formats[])
51 {
52  static const enum AVPixelFormat mjpeg_formats[] =
53  { AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ444P,
54  AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV444P,
55  AV_PIX_FMT_NONE };
56  static const enum AVPixelFormat ljpeg_formats[] =
57  { AV_PIX_FMT_BGR24 , AV_PIX_FMT_BGRA , AV_PIX_FMT_BGR0,
58  AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ422P,
59  AV_PIX_FMT_YUV420P , AV_PIX_FMT_YUV444P , AV_PIX_FMT_YUV422P,
60  AV_PIX_FMT_NONE};
61 
62  if (codec_id == AV_CODEC_ID_MJPEG) {
63  return mjpeg_formats;
64  } else if (codec_id == AV_CODEC_ID_LJPEG) {
65  return ljpeg_formats;
66  } else {
67  return default_formats;
68  }
69 }
70 
71 enum AVPixelFormat choose_pixel_fmt(AVStream *st, AVCodecContext *enc_ctx, const AVCodec *codec, enum AVPixelFormat target)
72 {
73  if (codec && codec->pix_fmts) {
74  const enum AVPixelFormat *p = codec->pix_fmts;
75  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(target);
76  //FIXME: This should check for AV_PIX_FMT_FLAG_ALPHA after PAL8 pixel format without alpha is implemented
77  int has_alpha = desc ? desc->nb_components % 2 == 0 : 0;
78  enum AVPixelFormat best= AV_PIX_FMT_NONE;
79 
80  if (enc_ctx->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
81  p = get_compliance_unofficial_pix_fmts(enc_ctx->codec_id, p);
82  }
83  for (; *p != AV_PIX_FMT_NONE; p++) {
84  best= avcodec_find_best_pix_fmt_of_2(best, *p, target, has_alpha, NULL);
85  if (*p == target)
86  break;
87  }
88  if (*p == AV_PIX_FMT_NONE) {
89  if (target != AV_PIX_FMT_NONE)
90  av_log(NULL, AV_LOG_WARNING,
91  "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
92  av_get_pix_fmt_name(target),
93  codec->name,
94  av_get_pix_fmt_name(best));
95  return best;
96  }
97  }
98  return target;
99 }
100 
101 void choose_sample_fmt(AVStream *st, const AVCodec *codec)
102 {
103  if (codec && codec->sample_fmts) {
104  const enum AVSampleFormat *p = codec->sample_fmts;
105  for (; *p != -1; p++) {
106  if (*p == st->codecpar->format)
107  break;
108  }
109  if (*p == -1) {
110  const AVCodecDescriptor *desc = avcodec_descriptor_get(codec->id);
111  if(desc && (desc->props & AV_CODEC_PROP_LOSSLESS) && av_get_sample_fmt_name(st->codecpar->format) > av_get_sample_fmt_name(codec->sample_fmts[0]))
112  av_log(NULL, AV_LOG_ERROR, "Conversion will not be lossless.\n");
113  if(av_get_sample_fmt_name(st->codecpar->format))
114  av_log(NULL, AV_LOG_WARNING,
115  "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
116  av_get_sample_fmt_name(st->codecpar->format),
117  codec->name,
118  av_get_sample_fmt_name(codec->sample_fmts[0]));
119  st->codecpar->format = codec->sample_fmts[0];
120  }
121  }
122 }
123 
124 static char *choose_pix_fmts(OutputFilter *ofilter)
125 {
126  OutputStream *ost = ofilter->ost;
127  AVDictionaryEntry *strict_dict = av_dict_get(ost->encoder_opts, "strict", NULL, 0);
128  if (strict_dict)
129  // used by choose_pixel_fmt() and below
130  av_opt_set(ost->enc_ctx, "strict", strict_dict->value, 0);
131 
132  if (ost->keep_pix_fmt) {
133  avfilter_graph_set_auto_convert(ofilter->graph->graph,
134  AVFILTER_AUTO_CONVERT_NONE);
135  if (ost->enc_ctx->pix_fmt == AV_PIX_FMT_NONE)
136  return NULL;
137  return av_strdup(av_get_pix_fmt_name(ost->enc_ctx->pix_fmt));
138  }
139  if (ost->enc_ctx->pix_fmt != AV_PIX_FMT_NONE) {
140  return av_strdup(av_get_pix_fmt_name(choose_pixel_fmt(ost->st, ost->enc_ctx, ost->enc, ost->enc_ctx->pix_fmt)));
141  } else if (ost->enc && ost->enc->pix_fmts) {
142  const enum AVPixelFormat *p;
143  AVIOContext *s = NULL;
144  uint8_t *ret;
145  int len;
146 
147  if (avio_open_dyn_buf(&s) < 0)
148  exit_program(1);
149 
150  p = ost->enc->pix_fmts;
151  if (ost->enc_ctx->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
152  p = get_compliance_unofficial_pix_fmts(ost->enc_ctx->codec_id, p);
153  }
154 
155  for (; *p != AV_PIX_FMT_NONE; p++) {
156  const char *name = av_get_pix_fmt_name(*p);
157  avio_printf(s, "%s|", name);
158  }
159  len = avio_close_dyn_buf(s, &ret);
160  ret[len - 1] = 0;
161  return ret;
162  } else
163  return NULL;
164 }
165 
166 /* Define a function for building a string containing a list of
167  * allowed formats. */
168 #define DEF_CHOOSE_FORMAT(suffix, type, var, supported_list, none, get_name) \
169 static char *choose_ ## suffix (OutputFilter *ofilter) \
170 { \
171  if (ofilter->var != none) { \
172  get_name(ofilter->var); \
173  return av_strdup(name); \
174  } else if (ofilter->supported_list) { \
175  const type *p; \
176  AVIOContext *s = NULL; \
177  uint8_t *ret; \
178  int len; \
179  \
180  if (avio_open_dyn_buf(&s) < 0) \
181  exit_program(1); \
182  \
183  for (p = ofilter->supported_list; *p != none; p++) { \
184  get_name(*p); \
185  avio_printf(s, "%s|", name); \
186  } \
187  len = avio_close_dyn_buf(s, &ret); \
188  ret[len - 1] = 0; \
189  return ret; \
190  } else \
191  return NULL; \
192 }
193 
194 //DEF_CHOOSE_FORMAT(pix_fmts, enum AVPixelFormat, format, formats, AV_PIX_FMT_NONE,
195 // GET_PIX_FMT_NAME)
196 
197 DEF_CHOOSE_FORMAT(sample_fmts, enum AVSampleFormat, format, formats,
198  AV_SAMPLE_FMT_NONE, GET_SAMPLE_FMT_NAME)
199 
202 
203 DEF_CHOOSE_FORMAT(channel_layouts, uint64_t, channel_layout, channel_layouts, 0,
205 
207 {
208  FilterGraph *fg = av_mallocz(sizeof(*fg));
209 
210  if (!fg)
211  exit_program(1);
212  fg->index = nb_filtergraphs;
213 
214  GROW_ARRAY(fg->outputs, fg->nb_outputs);
215  if (!(fg->outputs[0] = av_mallocz(sizeof(*fg->outputs[0]))))
216  exit_program(1);
217  fg->outputs[0]->ost = ost;
218  fg->outputs[0]->graph = fg;
219  fg->outputs[0]->format = -1;
220 
221  ost->filter = fg->outputs[0];
222 
223  GROW_ARRAY(fg->inputs, fg->nb_inputs);
224  if (!(fg->inputs[0] = av_mallocz(sizeof(*fg->inputs[0]))))
225  exit_program(1);
226  fg->inputs[0]->ist = ist;
227  fg->inputs[0]->graph = fg;
228  fg->inputs[0]->format = -1;
229 
230  fg->inputs[0]->frame_queue = av_fifo_alloc(8 * sizeof(AVFrame*));
231  if (!fg->inputs[0]->frame_queue)
232  exit_program(1);
233 
234  GROW_ARRAY(ist->filters, ist->nb_filters);
235  ist->filters[ist->nb_filters - 1] = fg->inputs[0];
236 
238  filtergraphs[nb_filtergraphs - 1] = fg;
239 
240  return 0;
241 }
242 
243 static char *describe_filter_link(FilterGraph *fg, AVFilterInOut *inout, int in)
244 {
245  AVFilterContext *ctx = inout->filter_ctx;
246  AVFilterPad *pads = in ? ctx->input_pads : ctx->output_pads;
247  int nb_pads = in ? ctx->nb_inputs : ctx->nb_outputs;
248  AVIOContext *pb;
249  uint8_t *res = NULL;
250 
251  if (avio_open_dyn_buf(&pb) < 0)
252  exit_program(1);
253 
254  avio_printf(pb, "%s", ctx->filter->name);
255  if (nb_pads > 1)
256  avio_printf(pb, ":%s", avfilter_pad_get_name(pads, inout->pad_idx));
257  avio_w8(pb, 0);
258  avio_close_dyn_buf(pb, &res);
259  return res;
260 }
261 
262 static void init_input_filter(FilterGraph *fg, AVFilterInOut *in)
263 {
264  InputStream *ist = NULL;
265  enum AVMediaType type = avfilter_pad_get_type(in->filter_ctx->input_pads, in->pad_idx);
266  int i;
267 
268  // TODO: support other filter types
269  if (type != AVMEDIA_TYPE_VIDEO && type != AVMEDIA_TYPE_AUDIO) {
270  av_log(NULL, AV_LOG_FATAL, "Only video and audio filters supported "
271  "currently.\n");
272  exit_program(1);
273  }
274 
275  if (in->name) {
276  AVFormatContext *s;
277  AVStream *st = NULL;
278  char *p;
279  int file_idx = strtol(in->name, &p, 0);
280 
281  if (file_idx < 0 || file_idx >= nb_input_files) {
282  av_log(NULL, AV_LOG_FATAL, "Invalid file index %d in filtergraph description %s.\n",
283  file_idx, fg->graph_desc);
284  exit_program(1);
285  }
286  s = input_files[file_idx]->ctx;
287 
288  for (i = 0; i < s->nb_streams; i++) {
289  enum AVMediaType stream_type = s->streams[i]->codecpar->codec_type;
290  if (stream_type != type &&
291  !(stream_type == AVMEDIA_TYPE_SUBTITLE &&
292  type == AVMEDIA_TYPE_VIDEO /* sub2video hack */))
293  continue;
294  if (check_stream_specifier(s, s->streams[i], *p == ':' ? p + 1 : p) == 1) {
295  st = s->streams[i];
296  break;
297  }
298  }
299  if (!st) {
300  av_log(NULL, AV_LOG_FATAL, "Stream specifier '%s' in filtergraph description %s "
301  "matches no streams.\n", p, fg->graph_desc);
302  exit_program(1);
303  }
304  ist = input_streams[input_files[file_idx]->ist_index + st->index];
305  if (ist->user_set_discard == AVDISCARD_ALL) {
306  av_log(NULL, AV_LOG_FATAL, "Stream specifier '%s' in filtergraph description %s "
307  "matches a disabled input stream.\n", p, fg->graph_desc);
308  exit_program(1);
309  }
310  } else {
311  /* find the first unused stream of corresponding type */
312  for (i = 0; i < nb_input_streams; i++) {
313  ist = input_streams[i];
314  if (ist->user_set_discard == AVDISCARD_ALL)
315  continue;
316  if (ist->dec_ctx->codec_type == type && ist->discard)
317  break;
318  }
319  if (i == nb_input_streams) {
320  av_log(NULL, AV_LOG_FATAL, "Cannot find a matching stream for "
321  "unlabeled input pad %d on filter %s\n", in->pad_idx,
322  in->filter_ctx->name);
323  exit_program(1);
324  }
325  }
326  av_assert0(ist);
327 
328  ist->discard = 0;
330  ist->st->discard = AVDISCARD_NONE;
331 
332  GROW_ARRAY(fg->inputs, fg->nb_inputs);
333  if (!(fg->inputs[fg->nb_inputs - 1] = av_mallocz(sizeof(*fg->inputs[0]))))
334  exit_program(1);
335  fg->inputs[fg->nb_inputs - 1]->ist = ist;
336  fg->inputs[fg->nb_inputs - 1]->graph = fg;
337  fg->inputs[fg->nb_inputs - 1]->format = -1;
338  fg->inputs[fg->nb_inputs - 1]->type = ist->st->codecpar->codec_type;
339  fg->inputs[fg->nb_inputs - 1]->name = describe_filter_link(fg, in, 1);
340 
341  fg->inputs[fg->nb_inputs - 1]->frame_queue = av_fifo_alloc(8 * sizeof(AVFrame*));
342  if (!fg->inputs[fg->nb_inputs - 1]->frame_queue)
343  exit_program(1);
344 
345  GROW_ARRAY(ist->filters, ist->nb_filters);
346  ist->filters[ist->nb_filters - 1] = fg->inputs[fg->nb_inputs - 1];
347 }
348 
350 {
351  AVFilterInOut *inputs, *outputs, *cur;
352  AVFilterGraph *graph;
353  int ret = 0;
354 
355  /* this graph is only used for determining the kinds of inputs
356  * and outputs we have, and is discarded on exit from this function */
357  graph = avfilter_graph_alloc();
358  if (!graph)
359  return AVERROR(ENOMEM);
360  graph->nb_threads = 1;
361 
362  ret = avfilter_graph_parse2(graph, fg->graph_desc, &inputs, &outputs);
363  if (ret < 0)
364  goto fail;
365 
366  for (cur = inputs; cur; cur = cur->next)
367  init_input_filter(fg, cur);
368 
369  for (cur = outputs; cur;) {
370  GROW_ARRAY(fg->outputs, fg->nb_outputs);
371  fg->outputs[fg->nb_outputs - 1] = av_mallocz(sizeof(*fg->outputs[0]));
372  if (!fg->outputs[fg->nb_outputs - 1])
373  exit_program(1);
374 
375  fg->outputs[fg->nb_outputs - 1]->graph = fg;
376  fg->outputs[fg->nb_outputs - 1]->out_tmp = cur;
377  fg->outputs[fg->nb_outputs - 1]->type = avfilter_pad_get_type(cur->filter_ctx->output_pads,
378  cur->pad_idx);
379  fg->outputs[fg->nb_outputs - 1]->name = describe_filter_link(fg, cur, 0);
380  cur = cur->next;
381  fg->outputs[fg->nb_outputs - 1]->out_tmp->next = NULL;
382  }
383 
384 fail:
385  avfilter_inout_free(&inputs);
386  avfilter_graph_free(&graph);
387  return ret;
388 }
389 
390 static int insert_trim(int64_t start_time, int64_t duration,
391  AVFilterContext **last_filter, int *pad_idx,
392  const char *filter_name)
393 {
394  AVFilterGraph *graph = (*last_filter)->graph;
395  AVFilterContext *ctx;
396  const AVFilter *trim;
397  enum AVMediaType type = avfilter_pad_get_type((*last_filter)->output_pads, *pad_idx);
398  const char *name = (type == AVMEDIA_TYPE_VIDEO) ? "trim" : "atrim";
399  int ret = 0;
400 
401  if (duration == INT64_MAX && start_time == AV_NOPTS_VALUE)
402  return 0;
403 
404  trim = avfilter_get_by_name(name);
405  if (!trim) {
406  av_log(NULL, AV_LOG_ERROR, "%s filter not present, cannot limit "
407  "recording time.\n", name);
408  return AVERROR_FILTER_NOT_FOUND;
409  }
410 
411  ctx = avfilter_graph_alloc_filter(graph, trim, filter_name);
412  if (!ctx)
413  return AVERROR(ENOMEM);
414 
415  if (duration != INT64_MAX) {
416  ret = av_opt_set_int(ctx, "durationi", duration,
417  AV_OPT_SEARCH_CHILDREN);
418  }
419  if (ret >= 0 && start_time != AV_NOPTS_VALUE) {
420  ret = av_opt_set_int(ctx, "starti", start_time,
421  AV_OPT_SEARCH_CHILDREN);
422  }
423  if (ret < 0) {
424  av_log(ctx, AV_LOG_ERROR, "Error configuring the %s filter", name);
425  return ret;
426  }
427 
428  ret = avfilter_init_str(ctx, NULL);
429  if (ret < 0)
430  return ret;
431 
432  ret = avfilter_link(*last_filter, *pad_idx, ctx, 0);
433  if (ret < 0)
434  return ret;
435 
436  *last_filter = ctx;
437  *pad_idx = 0;
438  return 0;
439 }
440 
441 static int insert_filter(AVFilterContext **last_filter, int *pad_idx,
442  const char *filter_name, const char *args)
443 {
444  AVFilterGraph *graph = (*last_filter)->graph;
445  AVFilterContext *ctx;
446  int ret;
447 
448  ret = avfilter_graph_create_filter(&ctx,
449  avfilter_get_by_name(filter_name),
450  filter_name, args, NULL, graph);
451  if (ret < 0)
452  return ret;
453 
454  ret = avfilter_link(*last_filter, *pad_idx, ctx, 0);
455  if (ret < 0)
456  return ret;
457 
458  *last_filter = ctx;
459  *pad_idx = 0;
460  return 0;
461 }
462 
463 static int configure_output_video_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
464 {
465  char *pix_fmts;
466  OutputStream *ost = ofilter->ost;
467  OutputFile *of = output_files[ost->file_index];
468  AVFilterContext *last_filter = out->filter_ctx;
469  int pad_idx = out->pad_idx;
470  int ret;
471  char name[255];
472 
473  snprintf(name, sizeof(name), "out_%d_%d", ost->file_index, ost->index);
474  ret = avfilter_graph_create_filter(&ofilter->filter,
475  avfilter_get_by_name("buffersink"),
476  name, NULL, NULL, fg->graph);
477 
478  if (ret < 0)
479  return ret;
480 
481  if ((ofilter->width || ofilter->height) && ofilter->ost->autoscale) {
482  char args[255];
483  AVFilterContext *filter;
484  AVDictionaryEntry *e = NULL;
485 
486  snprintf(args, sizeof(args), "%d:%d",
487  ofilter->width, ofilter->height);
488 
489  while ((e = av_dict_get(ost->sws_dict, "", e,
490  AV_DICT_IGNORE_SUFFIX))) {
491  av_strlcatf(args, sizeof(args), ":%s=%s", e->key, e->value);
492  }
493 
494  snprintf(name, sizeof(name), "scaler_out_%d_%d",
495  ost->file_index, ost->index);
496  if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
497  name, args, NULL, fg->graph)) < 0)
498  return ret;
499  if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
500  return ret;
501 
502  last_filter = filter;
503  pad_idx = 0;
504  }
505 
506  if ((pix_fmts = choose_pix_fmts(ofilter))) {
507  AVFilterContext *filter;
508  snprintf(name, sizeof(name), "format_out_%d_%d",
509  ost->file_index, ost->index);
510  ret = avfilter_graph_create_filter(&filter,
511  avfilter_get_by_name("format"),
512  "format", pix_fmts, NULL, fg->graph);
513  av_freep(&pix_fmts);
514  if (ret < 0)
515  return ret;
516  if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
517  return ret;
518 
519  last_filter = filter;
520  pad_idx = 0;
521  }
522 
523  if (ost->frame_rate.num && 0) {
524  AVFilterContext *fps;
525  char args[255];
526 
527  snprintf(args, sizeof(args), "fps=%d/%d", ost->frame_rate.num,
528  ost->frame_rate.den);
529  snprintf(name, sizeof(name), "fps_out_%d_%d",
530  ost->file_index, ost->index);
531  ret = avfilter_graph_create_filter(&fps, avfilter_get_by_name("fps"),
532  name, args, NULL, fg->graph);
533  if (ret < 0)
534  return ret;
535 
536  ret = avfilter_link(last_filter, pad_idx, fps, 0);
537  if (ret < 0)
538  return ret;
539  last_filter = fps;
540  pad_idx = 0;
541  }
542 
543  snprintf(name, sizeof(name), "trim_out_%d_%d",
544  ost->file_index, ost->index);
545  ret = insert_trim(of->start_time, of->recording_time,
546  &last_filter, &pad_idx, name);
547  if (ret < 0)
548  return ret;
549 
550 
551  if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
552  return ret;
553 
554  return 0;
555 }
556 
557 static int configure_output_audio_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
558 {
559  OutputStream *ost = ofilter->ost;
560  OutputFile *of = output_files[ost->file_index];
561  AVCodecContext *codec = ost->enc_ctx;
562  AVFilterContext *last_filter = out->filter_ctx;
563  int pad_idx = out->pad_idx;
564  char *sample_fmts, *sample_rates, *channel_layouts;
565  char name[255];
566  int ret;
567 
568  snprintf(name, sizeof(name), "out_%d_%d", ost->file_index, ost->index);
569  ret = avfilter_graph_create_filter(&ofilter->filter,
570  avfilter_get_by_name("abuffersink"),
571  name, NULL, NULL, fg->graph);
572  if (ret < 0)
573  return ret;
574  if ((ret = av_opt_set_int(ofilter->filter, "all_channel_counts", 1, AV_OPT_SEARCH_CHILDREN)) < 0)
575  return ret;
576 
577 #define AUTO_INSERT_FILTER(opt_name, filter_name, arg) do { \
578  AVFilterContext *filt_ctx; \
579  \
580  av_log(NULL, AV_LOG_INFO, opt_name " is forwarded to lavfi " \
581  "similarly to -af " filter_name "=%s.\n", arg); \
582  \
583  ret = avfilter_graph_create_filter(&filt_ctx, \
584  avfilter_get_by_name(filter_name), \
585  filter_name, arg, NULL, fg->graph); \
586  if (ret < 0) \
587  return ret; \
588  \
589  ret = avfilter_link(last_filter, pad_idx, filt_ctx, 0); \
590  if (ret < 0) \
591  return ret; \
592  \
593  last_filter = filt_ctx; \
594  pad_idx = 0; \
595 } while (0)
596  if (ost->audio_channels_mapped) {
597  int i;
598  AVBPrint pan_buf;
599  av_bprint_init(&pan_buf, 256, 8192);
600  av_bprintf(&pan_buf, "0x%"PRIx64,
601  av_get_default_channel_layout(ost->audio_channels_mapped));
602  for (i = 0; i < ost->audio_channels_mapped; i++)
603  if (ost->audio_channels_map[i] != -1)
604  av_bprintf(&pan_buf, "|c%d=c%d", i, ost->audio_channels_map[i]);
605 
606  AUTO_INSERT_FILTER("-map_channel", "pan", pan_buf.str);
607  av_bprint_finalize(&pan_buf, NULL);
608  }
609 
610  if (codec->channels && !codec->channel_layout)
611  codec->channel_layout = av_get_default_channel_layout(codec->channels);
612 
613  sample_fmts = choose_sample_fmts(ofilter);
614  sample_rates = choose_sample_rates(ofilter);
615  channel_layouts = choose_channel_layouts(ofilter);
616  if (sample_fmts || sample_rates || channel_layouts) {
617  AVFilterContext *format;
618  char args[256];
619  args[0] = 0;
620 
621  if (sample_fmts)
622  av_strlcatf(args, sizeof(args), "sample_fmts=%s:",
623  sample_fmts);
624  if (sample_rates)
625  av_strlcatf(args, sizeof(args), "sample_rates=%s:",
626  sample_rates);
627  if (channel_layouts)
628  av_strlcatf(args, sizeof(args), "channel_layouts=%s:",
629  channel_layouts);
630 
631  av_freep(&sample_fmts);
632  av_freep(&sample_rates);
633  av_freep(&channel_layouts);
634 
635  snprintf(name, sizeof(name), "format_out_%d_%d",
636  ost->file_index, ost->index);
637  ret = avfilter_graph_create_filter(&format,
638  avfilter_get_by_name("aformat"),
639  name, args, NULL, fg->graph);
640  if (ret < 0)
641  return ret;
642 
643  ret = avfilter_link(last_filter, pad_idx, format, 0);
644  if (ret < 0)
645  return ret;
646 
647  last_filter = format;
648  pad_idx = 0;
649  }
650 
651  if (ost->apad && of->shortest) {
652  char args[256];
653  int i;
654 
655  for (i=0; i<of->ctx->nb_streams; i++)
656  if (of->ctx->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
657  break;
658 
659  if (i<of->ctx->nb_streams) {
660  snprintf(args, sizeof(args), "%s", ost->apad);
661  AUTO_INSERT_FILTER("-apad", "apad", args);
662  }
663  }
664 
665  snprintf(name, sizeof(name), "trim for output stream %d:%d",
666  ost->file_index, ost->index);
667  ret = insert_trim(of->start_time, of->recording_time,
668  &last_filter, &pad_idx, name);
669  if (ret < 0)
670  return ret;
671 
672  if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
673  return ret;
674 
675  return 0;
676 }
677 
678 int configure_output_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
679 {
680  if (!ofilter->ost) {
681  av_log(NULL, AV_LOG_FATAL, "Filter %s has an unconnected output\n", ofilter->name);
682  exit_program(1);
683  }
684 
685  switch (avfilter_pad_get_type(out->filter_ctx->output_pads, out->pad_idx)) {
686  case AVMEDIA_TYPE_VIDEO: return configure_output_video_filter(fg, ofilter, out);
687  case AVMEDIA_TYPE_AUDIO: return configure_output_audio_filter(fg, ofilter, out);
688  default: av_assert0(0);
689  }
690 }
691 
693 {
694  int i;
695  for (i = 0; i < nb_filtergraphs; i++) {
696  int n;
697  for (n = 0; n < filtergraphs[i]->nb_outputs; n++) {
698  OutputFilter *output = filtergraphs[i]->outputs[n];
699  if (!output->ost) {
700  av_log(NULL, AV_LOG_FATAL, "Filter %s has an unconnected output\n", output->name);
701  exit_program(1);
702  }
703  }
704  }
705 }
706 
707 static int sub2video_prepare(InputStream *ist, InputFilter *ifilter)
708 {
709  AVFormatContext *avf = input_files[ist->file_index]->ctx;
710  int i, w, h;
711 
712  /* Compute the size of the canvas for the subtitles stream.
713  If the subtitles codecpar has set a size, use it. Otherwise use the
714  maximum dimensions of the video streams in the same file. */
715  w = ifilter->width;
716  h = ifilter->height;
717  if (!(w && h)) {
718  for (i = 0; i < avf->nb_streams; i++) {
719  if (avf->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
720  w = FFMAX(w, avf->streams[i]->codecpar->width);
721  h = FFMAX(h, avf->streams[i]->codecpar->height);
722  }
723  }
724  if (!(w && h)) {
725  w = FFMAX(w, 720);
726  h = FFMAX(h, 576);
727  }
728  av_log(avf, AV_LOG_INFO, "sub2video: using %dx%d canvas\n", w, h);
729  }
730  ist->sub2video.w = ifilter->width = w;
731  ist->sub2video.h = ifilter->height = h;
732 
733  ifilter->width = ist->dec_ctx->width ? ist->dec_ctx->width : ist->sub2video.w;
734  ifilter->height = ist->dec_ctx->height ? ist->dec_ctx->height : ist->sub2video.h;
735 
736  /* rectangles are AV_PIX_FMT_PAL8, but we have no guarantee that the
737  palettes for all rectangles are identical or compatible */
738  ifilter->format = AV_PIX_FMT_RGB32;
739 
740  ist->sub2video.frame = av_frame_alloc();
741  if (!ist->sub2video.frame)
742  return AVERROR(ENOMEM);
743  ist->sub2video.last_pts = INT64_MIN;
744  ist->sub2video.end_pts = INT64_MIN;
745 
746  /* sub2video structure has been (re-)initialized.
747  Mark it as such so that the system will be
748  initialized with the first received heartbeat. */
749  ist->sub2video.initialize = 1;
750 
751  return 0;
752 }
753 
755  AVFilterInOut *in)
756 {
757  AVFilterContext *last_filter;
758  const AVFilter *buffer_filt = avfilter_get_by_name("buffer");
759  InputStream *ist = ifilter->ist;
760  InputFile *f = input_files[ist->file_index];
761  AVRational tb = ist->framerate.num ? av_inv_q(ist->framerate) :
762  ist->st->time_base;
763  AVRational fr = ist->framerate;
764  AVRational sar;
765  AVBPrint args;
766  char name[255];
767  int ret, pad_idx = 0;
768  int64_t tsoffset = 0;
769  AVBufferSrcParameters *par = av_buffersrc_parameters_alloc();
770 
771  if (!par)
772  return AVERROR(ENOMEM);
773  memset(par, 0, sizeof(*par));
774  par->format = AV_PIX_FMT_NONE;
775 
776  if (ist->dec_ctx->codec_type == AVMEDIA_TYPE_AUDIO) {
777  av_log(NULL, AV_LOG_ERROR, "Cannot connect video filter to audio input\n");
778  ret = AVERROR(EINVAL);
779  goto fail;
780  }
781 
782  if (!fr.num)
783  fr = av_guess_frame_rate(input_files[ist->file_index]->ctx, ist->st, NULL);
784 
785  if (ist->dec_ctx->codec_type == AVMEDIA_TYPE_SUBTITLE) {
786  ret = sub2video_prepare(ist, ifilter);
787  if (ret < 0)
788  goto fail;
789  }
790 
791  sar = ifilter->sample_aspect_ratio;
792  if(!sar.den)
793  sar = (AVRational){0,1};
794  av_bprint_init(&args, 0, AV_BPRINT_SIZE_AUTOMATIC);
795  av_bprintf(&args,
796  "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:"
797  "pixel_aspect=%d/%d",
798  ifilter->width, ifilter->height, ifilter->format,
799  tb.num, tb.den, sar.num, sar.den);
800  if (fr.num && fr.den)
801  av_bprintf(&args, ":frame_rate=%d/%d", fr.num, fr.den);
802  snprintf(name, sizeof(name), "graph %d input from stream %d:%d", fg->index,
803  ist->file_index, ist->st->index);
804 
805 
806  if ((ret = avfilter_graph_create_filter(&ifilter->filter, buffer_filt, name,
807  args.str, NULL, fg->graph)) < 0)
808  goto fail;
809  par->hw_frames_ctx = ifilter->hw_frames_ctx;
810  ret = av_buffersrc_parameters_set(ifilter->filter, par);
811  if (ret < 0)
812  goto fail;
813  av_freep(&par);
814  last_filter = ifilter->filter;
815 
816  if (ist->autorotate) {
817  double theta = get_rotation(ist->st);
818 
819  if (fabs(theta - 90) < 1.0) {
820  ret = insert_filter(&last_filter, &pad_idx, "transpose", "clock");
821  } else if (fabs(theta - 180) < 1.0) {
822  ret = insert_filter(&last_filter, &pad_idx, "hflip", NULL);
823  if (ret < 0)
824  return ret;
825  ret = insert_filter(&last_filter, &pad_idx, "vflip", NULL);
826  } else if (fabs(theta - 270) < 1.0) {
827  ret = insert_filter(&last_filter, &pad_idx, "transpose", "cclock");
828  } else if (fabs(theta) > 1.0) {
829  char rotate_buf[64];
830  snprintf(rotate_buf, sizeof(rotate_buf), "%f*PI/180", theta);
831  ret = insert_filter(&last_filter, &pad_idx, "rotate", rotate_buf);
832  }
833  if (ret < 0)
834  return ret;
835  }
836 
837  if (do_deinterlace) {
838  AVFilterContext *yadif;
839 
840  snprintf(name, sizeof(name), "deinterlace_in_%d_%d",
841  ist->file_index, ist->st->index);
842  if ((ret = avfilter_graph_create_filter(&yadif,
843  avfilter_get_by_name("yadif"),
844  name, "", NULL,
845  fg->graph)) < 0)
846  return ret;
847 
848  if ((ret = avfilter_link(last_filter, 0, yadif, 0)) < 0)
849  return ret;
850 
851  last_filter = yadif;
852  }
853 
854  snprintf(name, sizeof(name), "trim_in_%d_%d",
855  ist->file_index, ist->st->index);
856  if (copy_ts) {
857  tsoffset = f->start_time == AV_NOPTS_VALUE ? 0 : f->start_time;
858  if (!start_at_zero && f->ctx->start_time != AV_NOPTS_VALUE)
859  tsoffset += f->ctx->start_time;
860  }
861  ret = insert_trim(((f->start_time == AV_NOPTS_VALUE) || !f->accurate_seek) ?
862  AV_NOPTS_VALUE : tsoffset, f->recording_time,
863  &last_filter, &pad_idx, name);
864  if (ret < 0)
865  return ret;
866 
867  if ((ret = avfilter_link(last_filter, 0, in->filter_ctx, in->pad_idx)) < 0)
868  return ret;
869  return 0;
870 fail:
871  av_freep(&par);
872 
873  return ret;
874 }
875 
877  AVFilterInOut *in)
878 {
879  AVFilterContext *last_filter;
880  const AVFilter *abuffer_filt = avfilter_get_by_name("abuffer");
881  InputStream *ist = ifilter->ist;
882  InputFile *f = input_files[ist->file_index];
883  AVBPrint args;
884  char name[255];
885  int ret, pad_idx = 0;
886  int64_t tsoffset = 0;
887 
888  if (ist->dec_ctx->codec_type != AVMEDIA_TYPE_AUDIO) {
889  av_log(NULL, AV_LOG_ERROR, "Cannot connect audio filter to non audio input\n");
890  return AVERROR(EINVAL);
891  }
892 
893  av_bprint_init(&args, 0, AV_BPRINT_SIZE_AUTOMATIC);
894  av_bprintf(&args, "time_base=%d/%d:sample_rate=%d:sample_fmt=%s",
895  1, ifilter->sample_rate,
896  ifilter->sample_rate,
897  av_get_sample_fmt_name(ifilter->format));
898  if (ifilter->channel_layout)
899  av_bprintf(&args, ":channel_layout=0x%"PRIx64,
900  ifilter->channel_layout);
901  else
902  av_bprintf(&args, ":channels=%d", ifilter->channels);
903  snprintf(name, sizeof(name), "graph_%d_in_%d_%d", fg->index,
904  ist->file_index, ist->st->index);
905 
906  if ((ret = avfilter_graph_create_filter(&ifilter->filter, abuffer_filt,
907  name, args.str, NULL,
908  fg->graph)) < 0)
909  return ret;
910  last_filter = ifilter->filter;
911 
912 #define AUTO_INSERT_FILTER_INPUT(opt_name, filter_name, arg) do { \
913  AVFilterContext *filt_ctx; \
914  \
915  av_log(NULL, AV_LOG_INFO, opt_name " is forwarded to lavfi " \
916  "similarly to -af " filter_name "=%s.\n", arg); \
917  \
918  snprintf(name, sizeof(name), "graph_%d_%s_in_%d_%d", \
919  fg->index, filter_name, ist->file_index, ist->st->index); \
920  ret = avfilter_graph_create_filter(&filt_ctx, \
921  avfilter_get_by_name(filter_name), \
922  name, arg, NULL, fg->graph); \
923  if (ret < 0) \
924  return ret; \
925  \
926  ret = avfilter_link(last_filter, 0, filt_ctx, 0); \
927  if (ret < 0) \
928  return ret; \
929  \
930  last_filter = filt_ctx; \
931 } while (0)
932 
933  if (audio_sync_method > 0) {
934  char args[256] = {0};
935 
936  av_strlcatf(args, sizeof(args), "async=%d", audio_sync_method);
937  if (audio_drift_threshold != 0.1)
938  av_strlcatf(args, sizeof(args), ":min_hard_comp=%f", audio_drift_threshold);
939  if (!fg->reconfiguration)
940  av_strlcatf(args, sizeof(args), ":first_pts=0");
941  AUTO_INSERT_FILTER_INPUT("-async", "aresample", args);
942  }
943 
944 // if (ost->audio_channels_mapped) {
945 // int i;
946 // AVBPrint pan_buf;
947 // av_bprint_init(&pan_buf, 256, 8192);
948 // av_bprintf(&pan_buf, "0x%"PRIx64,
949 // av_get_default_channel_layout(ost->audio_channels_mapped));
950 // for (i = 0; i < ost->audio_channels_mapped; i++)
951 // if (ost->audio_channels_map[i] != -1)
952 // av_bprintf(&pan_buf, ":c%d=c%d", i, ost->audio_channels_map[i]);
953 // AUTO_INSERT_FILTER_INPUT("-map_channel", "pan", pan_buf.str);
954 // av_bprint_finalize(&pan_buf, NULL);
955 // }
956 
957  if (audio_volume != 256) {
958  char args[256];
959 
960  av_log(NULL, AV_LOG_WARNING, "-vol has been deprecated. Use the volume "
961  "audio filter instead.\n");
962 
963  snprintf(args, sizeof(args), "%f", audio_volume / 256.);
964  AUTO_INSERT_FILTER_INPUT("-vol", "volume", args);
965  }
966 
967  snprintf(name, sizeof(name), "trim for input stream %d:%d",
968  ist->file_index, ist->st->index);
969  if (copy_ts) {
970  tsoffset = f->start_time == AV_NOPTS_VALUE ? 0 : f->start_time;
971  if (!start_at_zero && f->ctx->start_time != AV_NOPTS_VALUE)
972  tsoffset += f->ctx->start_time;
973  }
974  ret = insert_trim(((f->start_time == AV_NOPTS_VALUE) || !f->accurate_seek) ?
975  AV_NOPTS_VALUE : tsoffset, f->recording_time,
976  &last_filter, &pad_idx, name);
977  if (ret < 0)
978  return ret;
979 
980  if ((ret = avfilter_link(last_filter, 0, in->filter_ctx, in->pad_idx)) < 0)
981  return ret;
982 
983  return 0;
984 }
985 
987  AVFilterInOut *in)
988 {
989  if (!ifilter->ist->dec) {
990  av_log(NULL, AV_LOG_ERROR,
991  "No decoder for stream #%d:%d, filtering impossible\n",
992  ifilter->ist->file_index, ifilter->ist->st->index);
993  return AVERROR_DECODER_NOT_FOUND;
994  }
995  switch (avfilter_pad_get_type(in->filter_ctx->input_pads, in->pad_idx)) {
996  case AVMEDIA_TYPE_VIDEO: return configure_input_video_filter(fg, ifilter, in);
997  case AVMEDIA_TYPE_AUDIO: return configure_input_audio_filter(fg, ifilter, in);
998  default: av_assert0(0);
999  }
1000 }
1001 
1003 {
1004  int i;
1005  for (i = 0; i < fg->nb_outputs; i++)
1006  fg->outputs[i]->filter = (AVFilterContext *)NULL;
1007  for (i = 0; i < fg->nb_inputs; i++)
1008  fg->inputs[i]->filter = (AVFilterContext *)NULL;
1009  avfilter_graph_free(&fg->graph);
1010 }
1011 
1013 {
1014  AVFilterInOut *inputs, *outputs, *cur;
1015  int ret, i, simple = filtergraph_is_simple(fg);
1016  const char *graph_desc = simple ? fg->outputs[0]->ost->avfilter :
1017  fg->graph_desc;
1018 
1019  cleanup_filtergraph(fg);
1020  if (!(fg->graph = avfilter_graph_alloc()))
1021  return AVERROR(ENOMEM);
1022 
1023  if (simple) {
1024  OutputStream *ost = fg->outputs[0]->ost;
1025  char args[512];
1026  AVDictionaryEntry *e = NULL;
1027 
1028  fg->graph->nb_threads = filter_nbthreads;
1029 
1030  args[0] = 0;
1031  while ((e = av_dict_get(ost->sws_dict, "", e,
1032  AV_DICT_IGNORE_SUFFIX))) {
1033  av_strlcatf(args, sizeof(args), "%s=%s:", e->key, e->value);
1034  }
1035  if (strlen(args))
1036  args[strlen(args)-1] = 0;
1037  fg->graph->scale_sws_opts = av_strdup(args);
1038 
1039  args[0] = 0;
1040  while ((e = av_dict_get(ost->swr_opts, "", e,
1041  AV_DICT_IGNORE_SUFFIX))) {
1042  av_strlcatf(args, sizeof(args), "%s=%s:", e->key, e->value);
1043  }
1044  if (strlen(args))
1045  args[strlen(args)-1] = 0;
1046  av_opt_set(fg->graph, "aresample_swr_opts", args, 0);
1047 
1048  args[0] = '\0';
1049  while ((e = av_dict_get(fg->outputs[0]->ost->resample_opts, "", e,
1050  AV_DICT_IGNORE_SUFFIX))) {
1051  av_strlcatf(args, sizeof(args), "%s=%s:", e->key, e->value);
1052  }
1053  if (strlen(args))
1054  args[strlen(args) - 1] = '\0';
1055 
1056  e = av_dict_get(ost->encoder_opts, "threads", NULL, 0);
1057  if (e)
1058  av_opt_set(fg->graph, "threads", e->value, 0);
1059  } else {
1060  fg->graph->nb_threads = filter_complex_nbthreads;
1061  }
1062 
1063  if ((ret = avfilter_graph_parse2(fg->graph, graph_desc, &inputs, &outputs)) < 0)
1064  goto fail;
1065 
1066  ret = hw_device_setup_for_filter(fg);
1067  if (ret < 0)
1068  goto fail;
1069 
1070  if (simple && (!inputs || inputs->next || !outputs || outputs->next)) {
1071  const char *num_inputs;
1072  const char *num_outputs;
1073  if (!outputs) {
1074  num_outputs = "0";
1075  } else if (outputs->next) {
1076  num_outputs = ">1";
1077  } else {
1078  num_outputs = "1";
1079  }
1080  if (!inputs) {
1081  num_inputs = "0";
1082  } else if (inputs->next) {
1083  num_inputs = ">1";
1084  } else {
1085  num_inputs = "1";
1086  }
1087  av_log(NULL, AV_LOG_ERROR, "Simple filtergraph '%s' was expected "
1088  "to have exactly 1 input and 1 output."
1089  " However, it had %s input(s) and %s output(s)."
1090  " Please adjust, or use a complex filtergraph (-filter_complex) instead.\n",
1091  graph_desc, num_inputs, num_outputs);
1092  ret = AVERROR(EINVAL);
1093  goto fail;
1094  }
1095 
1096  for (cur = inputs, i = 0; cur; cur = cur->next, i++)
1097  if ((ret = configure_input_filter(fg, fg->inputs[i], cur)) < 0) {
1098  avfilter_inout_free(&inputs);
1099  avfilter_inout_free(&outputs);
1100  goto fail;
1101  }
1102  avfilter_inout_free(&inputs);
1103 
1104  for (cur = outputs, i = 0; cur; cur = cur->next, i++)
1105  configure_output_filter(fg, fg->outputs[i], cur);
1106  avfilter_inout_free(&outputs);
1107 
1109  avfilter_graph_set_auto_convert(fg->graph, AVFILTER_AUTO_CONVERT_NONE);
1110  if ((ret = avfilter_graph_config(fg->graph, NULL)) < 0)
1111  goto fail;
1112 
1113  /* limit the lists of allowed formats to the ones selected, to
1114  * make sure they stay the same if the filtergraph is reconfigured later */
1115  for (i = 0; i < fg->nb_outputs; i++) {
1116  OutputFilter *ofilter = fg->outputs[i];
1117  AVFilterContext *sink = ofilter->filter;
1118 
1119  ofilter->format = av_buffersink_get_format(sink);
1120 
1121  ofilter->width = av_buffersink_get_w(sink);
1122  ofilter->height = av_buffersink_get_h(sink);
1123 
1124  ofilter->sample_rate = av_buffersink_get_sample_rate(sink);
1125  ofilter->channel_layout = av_buffersink_get_channel_layout(sink);
1126  }
1127 
1128  fg->reconfiguration = 1;
1129 
1130  for (i = 0; i < fg->nb_outputs; i++) {
1131  OutputStream *ost = fg->outputs[i]->ost;
1132  if (!ost->enc) {
1133  /* identical to the same check in ffmpeg.c, needed because
1134  complex filter graphs are initialized earlier */
1135  av_log(NULL, AV_LOG_ERROR, "Encoder (codec %s) not found for output stream #%d:%d\n",
1136  avcodec_get_name(ost->st->codecpar->codec_id), ost->file_index, ost->index);
1137  ret = AVERROR(EINVAL);
1138  goto fail;
1139  }
1140  if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1141  !(ost->enc->capabilities & AV_CODEC_CAP_VARIABLE_FRAME_SIZE))
1142  av_buffersink_set_frame_size(ost->filter->filter,
1143  ost->enc_ctx->frame_size);
1144  }
1145 
1146  for (i = 0; i < fg->nb_inputs; i++) {
1147  while (av_fifo_size(fg->inputs[i]->frame_queue)) {
1148  AVFrame *tmp;
1149  av_fifo_generic_read(fg->inputs[i]->frame_queue, &tmp, sizeof(tmp), NULL);
1150  ret = av_buffersrc_add_frame(fg->inputs[i]->filter, tmp);
1151  av_frame_free(&tmp);
1152  if (ret < 0)
1153  goto fail;
1154  }
1155  }
1156 
1157  /* send the EOFs for the finished inputs */
1158  for (i = 0; i < fg->nb_inputs; i++) {
1159  if (fg->inputs[i]->eof) {
1160  ret = av_buffersrc_add_frame(fg->inputs[i]->filter, NULL);
1161  if (ret < 0)
1162  goto fail;
1163  }
1164  }
1165 
1166  /* process queued up subtitle packets */
1167  for (i = 0; i < fg->nb_inputs; i++) {
1168  InputStream *ist = fg->inputs[i]->ist;
1169  if (ist->sub2video.sub_queue && ist->sub2video.frame) {
1170  while (av_fifo_size(ist->sub2video.sub_queue)) {
1171  AVSubtitle tmp;
1172  av_fifo_generic_read(ist->sub2video.sub_queue, &tmp, sizeof(tmp), NULL);
1173  sub2video_update(ist, INT64_MIN, &tmp);
1174  avsubtitle_free(&tmp);
1175  }
1176  }
1177  }
1178 
1179  return 0;
1180 
1181 fail:
1182  cleanup_filtergraph(fg);
1183  return ret;
1184 }
1185 
1186 int ifilter_parameters_from_frame(InputFilter *ifilter, const AVFrame *frame)
1187 {
1188  av_buffer_unref(&ifilter->hw_frames_ctx);
1189 
1190  ifilter->format = frame->format;
1191 
1192  ifilter->width = frame->width;
1193  ifilter->height = frame->height;
1194  ifilter->sample_aspect_ratio = frame->sample_aspect_ratio;
1195 
1196  ifilter->sample_rate = frame->sample_rate;
1197  ifilter->channels = frame->channels;
1198  ifilter->channel_layout = frame->channel_layout;
1199 
1200  if (frame->hw_frames_ctx) {
1201  ifilter->hw_frames_ctx = av_buffer_ref(frame->hw_frames_ctx);
1202  if (!ifilter->hw_frames_ctx)
1203  return AVERROR(ENOMEM);
1204  }
1205 
1206  return 0;
1207 }
1208 
1210 {
1211  return !fg->graph_desc;
1212 }
void exit_program(int ret)
int check_stream_specifier(AVFormatContext *s, AVStream *st, const char *spec)
double get_rotation(AVStream *st)
#define GET_SAMPLE_RATE_NAME(rate)
#define GET_CH_LAYOUT_NAME(ch_layout)
#define GROW_ARRAY(array, nb_elems)
#define GET_SAMPLE_FMT_NAME(sample_fmt)
__thread InputStream ** input_streams
__thread int nb_input_streams
__thread OutputFile ** output_files
__thread int nb_input_files
__thread InputFile ** input_files
void sub2video_update(InputStream *ist, int64_t heartbeat_pts, AVSubtitle *sub)
__thread FilterGraph ** filtergraphs
__thread int nb_filtergraphs
__thread int filter_complex_nbthreads
__thread int audio_volume
__thread int copy_ts
__thread int filter_nbthreads
#define DECODING_FOR_FILTER
__thread int do_deinterlace
__thread int audio_sync_method
int hw_device_setup_for_filter(FilterGraph *fg)
int init_simple_filtergraph(InputStream *ist, OutputStream *ost)
__thread float audio_drift_threshold
__thread int start_at_zero
__thread int auto_conversion_filters
static void cleanup_filtergraph(FilterGraph *fg)
int configure_output_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
static enum AVPixelFormat * get_compliance_unofficial_pix_fmts(enum AVCodecID codec_id, const enum AVPixelFormat default_formats[])
int ifilter_parameters_from_frame(InputFilter *ifilter, const AVFrame *frame)
static int sub2video_prepare(InputStream *ist, InputFilter *ifilter)
static int configure_output_video_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
#define DEF_CHOOSE_FORMAT(suffix, type, var, supported_list, none, get_name)
static char * choose_pix_fmts(OutputFilter *ofilter)
enum AVPixelFormat choose_pixel_fmt(AVStream *st, AVCodecContext *enc_ctx, const AVCodec *codec, enum AVPixelFormat target)
static int configure_output_audio_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
static void init_input_filter(FilterGraph *fg, AVFilterInOut *in)
static int configure_input_filter(FilterGraph *fg, InputFilter *ifilter, AVFilterInOut *in)
static char * describe_filter_link(FilterGraph *fg, AVFilterInOut *inout, int in)
static int insert_trim(int64_t start_time, int64_t duration, AVFilterContext **last_filter, int *pad_idx, const char *filter_name)
#define AUTO_INSERT_FILTER_INPUT(opt_name, filter_name, arg)
static int configure_input_video_filter(FilterGraph *fg, InputFilter *ifilter, AVFilterInOut *in)
void choose_sample_fmt(AVStream *st, const AVCodec *codec)
#define AUTO_INSERT_FILTER(opt_name, filter_name, arg)
static int configure_input_audio_filter(FilterGraph *fg, InputFilter *ifilter, AVFilterInOut *in)
int filtergraph_is_simple(FilterGraph *fg)
void check_filter_outputs(void)
static int insert_filter(AVFilterContext **last_filter, int *pad_idx, const char *filter_name, const char *args)
int configure_filtergraph(FilterGraph *fg)
int init_complex_filtergraph(FilterGraph *fg)
OutputFilter ** outputs
const char * graph_desc
AVFilterGraph * graph
InputFilter ** inputs
AVFormatContext * ctx
int64_t recording_time
int64_t start_time
AVBufferRef * hw_frames_ctx
uint8_t * name
struct InputStream * ist
AVFilterContext * filter
enum AVMediaType type
AVFifoBuffer * frame_queue
uint64_t channel_layout
struct FilterGraph * graph
AVRational sample_aspect_ratio
unsigned int initialize
marks if sub2video_update should force an initialization
AVFifoBuffer * sub_queue
queue of AVSubtitle* before filter init
AVCodecContext * dec_ctx
AVCodec * dec
struct InputStream::sub2video sub2video
AVStream * st
InputFilter ** filters
AVRational framerate
AVFormatContext * ctx
int64_t start_time
start time in microseconds == AV_TIME_BASE units
int64_t recording_time
desired length of the resulting file in microseconds == AV_TIME_BASE units
AVFilterInOut * out_tmp
struct OutputStream * ost
AVFilterContext * filter
uint8_t * name
struct FilterGraph * graph
uint64_t channel_layout
enum AVMediaType type
AVDictionary * swr_opts
int * audio_channels_map
int audio_channels_mapped
AVDictionary * resample_opts
AVRational frame_rate
AVCodecContext * enc_ctx
AVDictionary * encoder_opts
AVStream * st
AVCodec * enc
AVDictionary * sws_dict
OutputFilter * filter