FFmpeg  4.3.8
mux.c
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1 /*
2  * muxing functions for use within FFmpeg
3  * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 #include "avformat.h"
23 #include "internal.h"
24 #include "libavcodec/internal.h"
25 #include "libavutil/opt.h"
26 #include "libavutil/dict.h"
27 #include "libavutil/pixdesc.h"
28 #include "libavutil/timestamp.h"
29 #include "libavutil/avassert.h"
30 #include "libavutil/avstring.h"
31 #include "libavutil/internal.h"
32 #include "libavutil/mathematics.h"
33 
34 /**
35  * @file
36  * muxing functions for use within libavformat
37  */
38 
39 /* fraction handling */
40 
41 /**
42  * f = val + (num / den) + 0.5.
43  *
44  * 'num' is normalized so that it is such as 0 <= num < den.
45  *
46  * @param f fractional number
47  * @param val integer value
48  * @param num must be >= 0
49  * @param den must be >= 1
50  */
51 static void frac_init(FFFrac *f, int64_t val, int64_t num, int64_t den)
52 {
53  num += (den >> 1);
54  if (num >= den) {
55  val += num / den;
56  num = num % den;
57  }
58  f->val = val;
59  f->num = num;
60  f->den = den;
61 }
62 
63 /**
64  * Fractional addition to f: f = f + (incr / f->den).
65  *
66  * @param f fractional number
67  * @param incr increment, can be positive or negative
68  */
69 static void frac_add(FFFrac *f, int64_t incr)
70 {
71  int64_t num, den;
72 
73  num = f->num + incr;
74  den = f->den;
75  if (num < 0) {
76  f->val += num / den;
77  num = num % den;
78  if (num < 0) {
79  num += den;
80  f->val--;
81  }
82  } else if (num >= den) {
83  f->val += num / den;
84  num = num % den;
85  }
86  f->num = num;
87 }
88 
90 {
91  AVRational q;
92  int j;
93 
94  q = st->time_base;
95 
96  for (j=2; j<14; j+= 1+(j>2))
97  while (q.den / q.num < min_precision && q.num % j == 0)
98  q.num /= j;
99  while (q.den / q.num < min_precision && q.den < (1<<24))
100  q.den <<= 1;
101 
102  return q;
103 }
104 
106 {
107  AVCodecParameters *par = st->codecpar;
108  const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(par->format);
109 
111  return par->chroma_location;
112 
113  if (pix_desc) {
114  if (pix_desc->log2_chroma_h == 0) {
115  return AVCHROMA_LOC_TOPLEFT;
116  } else if (pix_desc->log2_chroma_w == 1 && pix_desc->log2_chroma_h == 1) {
118  switch (par->codec_id) {
119  case AV_CODEC_ID_MJPEG:
121  }
122  }
124  switch (par->codec_id) {
126  }
127  }
128  }
129  }
130 
132 
133 }
134 
136  const char *format, const char *filename)
137 {
139  int ret = 0;
140 
141  *avctx = NULL;
142  if (!s)
143  goto nomem;
144 
145  if (!oformat) {
146  if (format) {
147  oformat = av_guess_format(format, NULL, NULL);
148  if (!oformat) {
149  av_log(s, AV_LOG_ERROR, "Requested output format '%s' is not a suitable output format\n", format);
150  ret = AVERROR(EINVAL);
151  goto error;
152  }
153  } else {
154  oformat = av_guess_format(NULL, filename, NULL);
155  if (!oformat) {
156  ret = AVERROR(EINVAL);
157  av_log(s, AV_LOG_ERROR, "Unable to find a suitable output format for '%s'\n",
158  filename);
159  goto error;
160  }
161  }
162  }
163 
164  s->oformat = oformat;
165  if (s->oformat->priv_data_size > 0) {
167  if (!s->priv_data)
168  goto nomem;
169  if (s->oformat->priv_class) {
170  *(const AVClass**)s->priv_data= s->oformat->priv_class;
172  }
173  } else
174  s->priv_data = NULL;
175 
176  if (filename) {
177 #if FF_API_FORMAT_FILENAME
179  av_strlcpy(s->filename, filename, sizeof(s->filename));
181 #endif
182  if (!(s->url = av_strdup(filename)))
183  goto nomem;
184 
185  }
186  *avctx = s;
187  return 0;
188 nomem:
189  av_log(s, AV_LOG_ERROR, "Out of memory\n");
190  ret = AVERROR(ENOMEM);
191 error:
193  return ret;
194 }
195 
197 {
198  const AVCodecTag *avctag;
199  int n;
200  enum AVCodecID id = AV_CODEC_ID_NONE;
201  int64_t tag = -1;
202 
203  /**
204  * Check that tag + id is in the table
205  * If neither is in the table -> OK
206  * If tag is in the table with another id -> FAIL
207  * If id is in the table with another tag -> FAIL unless strict < normal
208  */
209  for (n = 0; s->oformat->codec_tag[n]; n++) {
210  avctag = s->oformat->codec_tag[n];
211  while (avctag->id != AV_CODEC_ID_NONE) {
212  if (avpriv_toupper4(avctag->tag) == avpriv_toupper4(st->codecpar->codec_tag)) {
213  id = avctag->id;
214  if (id == st->codecpar->codec_id)
215  return 1;
216  }
217  if (avctag->id == st->codecpar->codec_id)
218  tag = avctag->tag;
219  avctag++;
220  }
221  }
222  if (id != AV_CODEC_ID_NONE)
223  return 0;
224  if (tag >= 0 && (s->strict_std_compliance >= FF_COMPLIANCE_NORMAL))
225  return 0;
226  return 1;
227 }
228 
229 
231 {
232  int ret = 0, i;
233  AVStream *st;
234  AVDictionary *tmp = NULL;
235  AVCodecParameters *par = NULL;
236  const AVOutputFormat *of = s->oformat;
237  const AVCodecDescriptor *desc;
239 
240  if (options)
241  av_dict_copy(&tmp, *options, 0);
242 
243  if ((ret = av_opt_set_dict(s, &tmp)) < 0)
244  goto fail;
245  if (s->priv_data && s->oformat->priv_class && *(const AVClass**)s->priv_data==s->oformat->priv_class &&
246  (ret = av_opt_set_dict2(s->priv_data, &tmp, AV_OPT_SEARCH_CHILDREN)) < 0)
247  goto fail;
248 
249 #if FF_API_FORMAT_FILENAME
251  if (!s->url && !(s->url = av_strdup(s->filename))) {
253 #else
254  if (!s->url && !(s->url = av_strdup(""))) {
255 #endif
256  ret = AVERROR(ENOMEM);
257  goto fail;
258  }
259 
260 #if FF_API_LAVF_AVCTX
262  if (s->nb_streams && s->streams[0]->codec->flags & AV_CODEC_FLAG_BITEXACT) {
263  if (!(s->flags & AVFMT_FLAG_BITEXACT)) {
265  "The AVFormatContext is not in set to bitexact mode, only "
266  "the AVCodecContext. If this is not intended, set "
267  "AVFormatContext.flags |= AVFMT_FLAG_BITEXACT.\n");
268  }
269  }
271 #endif
272 
273  // some sanity checks
274  if (s->nb_streams == 0 && !(of->flags & AVFMT_NOSTREAMS)) {
275  av_log(s, AV_LOG_ERROR, "No streams to mux were specified\n");
276  ret = AVERROR(EINVAL);
277  goto fail;
278  }
279 
280  for (i = 0; i < s->nb_streams; i++) {
281  st = s->streams[i];
282  par = st->codecpar;
283 
284 #if FF_API_LAVF_AVCTX
287  st->codec->codec_type != AVMEDIA_TYPE_UNKNOWN) {
288  av_log(s, AV_LOG_WARNING, "Using AVStream.codec to pass codec "
289  "parameters to muxers is deprecated, use AVStream.codecpar "
290  "instead.\n");
291  ret = avcodec_parameters_from_context(st->codecpar, st->codec);
292  if (ret < 0)
293  goto fail;
294  }
296 #endif
297 
298  if (!st->time_base.num) {
299  /* fall back on the default timebase values */
300  if (par->codec_type == AVMEDIA_TYPE_AUDIO && par->sample_rate)
301  avpriv_set_pts_info(st, 64, 1, par->sample_rate);
302  else
303  avpriv_set_pts_info(st, 33, 1, 90000);
304  }
305 
306  switch (par->codec_type) {
307  case AVMEDIA_TYPE_AUDIO:
308  if (par->sample_rate <= 0) {
309  av_log(s, AV_LOG_ERROR, "sample rate not set\n");
310  ret = AVERROR(EINVAL);
311  goto fail;
312  }
313  if (!par->block_align)
314  par->block_align = par->channels *
315  av_get_bits_per_sample(par->codec_id) >> 3;
316  break;
317  case AVMEDIA_TYPE_VIDEO:
318  if ((par->width <= 0 || par->height <= 0) &&
319  !(of->flags & AVFMT_NODIMENSIONS)) {
320  av_log(s, AV_LOG_ERROR, "dimensions not set\n");
321  ret = AVERROR(EINVAL);
322  goto fail;
323  }
326  ) {
327  if (st->sample_aspect_ratio.num != 0 &&
328  st->sample_aspect_ratio.den != 0 &&
329  par->sample_aspect_ratio.num != 0 &&
330  par->sample_aspect_ratio.den != 0) {
331  av_log(s, AV_LOG_ERROR, "Aspect ratio mismatch between muxer "
332  "(%d/%d) and encoder layer (%d/%d)\n",
335  par->sample_aspect_ratio.den);
336  ret = AVERROR(EINVAL);
337  goto fail;
338  }
339  }
340  break;
341  }
342 
343  desc = avcodec_descriptor_get(par->codec_id);
344  if (desc && desc->props & AV_CODEC_PROP_REORDER)
345  st->internal->reorder = 1;
346 
348 
349  if (of->codec_tag) {
350  if ( par->codec_tag
351  && par->codec_id == AV_CODEC_ID_RAWVIDEO
352  && ( av_codec_get_tag(of->codec_tag, par->codec_id) == 0
353  || av_codec_get_tag(of->codec_tag, par->codec_id) == MKTAG('r', 'a', 'w', ' '))
354  && !validate_codec_tag(s, st)) {
355  // the current rawvideo encoding system ends up setting
356  // the wrong codec_tag for avi/mov, we override it here
357  par->codec_tag = 0;
358  }
359  if (par->codec_tag) {
360  if (!validate_codec_tag(s, st)) {
361  const uint32_t otag = av_codec_get_tag(s->oformat->codec_tag, par->codec_id);
362  av_log(s, AV_LOG_ERROR,
363  "Tag %s incompatible with output codec id '%d' (%s)\n",
364  av_fourcc2str(par->codec_tag), par->codec_id, av_fourcc2str(otag));
365  ret = AVERROR_INVALIDDATA;
366  goto fail;
367  }
368  } else
369  par->codec_tag = av_codec_get_tag(of->codec_tag, par->codec_id);
370  }
371 
374  }
375 
376  if (!s->priv_data && of->priv_data_size > 0) {
378  if (!s->priv_data) {
379  ret = AVERROR(ENOMEM);
380  goto fail;
381  }
382  if (of->priv_class) {
383  *(const AVClass **)s->priv_data = of->priv_class;
385  if ((ret = av_opt_set_dict2(s->priv_data, &tmp, AV_OPT_SEARCH_CHILDREN)) < 0)
386  goto fail;
387  }
388  }
389 
390  /* set muxer identification string */
391  if (!(s->flags & AVFMT_FLAG_BITEXACT)) {
392  av_dict_set(&s->metadata, "encoder", LIBAVFORMAT_IDENT, 0);
393  } else {
394  av_dict_set(&s->metadata, "encoder", NULL, 0);
395  }
396 
397  for (e = NULL; e = av_dict_get(s->metadata, "encoder-", e, AV_DICT_IGNORE_SUFFIX); ) {
398  av_dict_set(&s->metadata, e->key, NULL, 0);
399  }
400 
401  if (options) {
402  av_dict_free(options);
403  *options = tmp;
404  }
405 
406  if (s->oformat->init) {
407  if ((ret = s->oformat->init(s)) < 0) {
408  if (s->oformat->deinit)
409  s->oformat->deinit(s);
410  return ret;
411  }
412  return ret == 0;
413  }
414 
415  return 0;
416 
417 fail:
418  av_dict_free(&tmp);
419  return ret;
420 }
421 
422 static int init_pts(AVFormatContext *s)
423 {
424  int i;
425  AVStream *st;
426 
427  /* init PTS generation */
428  for (i = 0; i < s->nb_streams; i++) {
429  int64_t den = AV_NOPTS_VALUE;
430  st = s->streams[i];
431 
432  switch (st->codecpar->codec_type) {
433  case AVMEDIA_TYPE_AUDIO:
434  den = (int64_t)st->time_base.num * st->codecpar->sample_rate;
435  break;
436  case AVMEDIA_TYPE_VIDEO:
437  den = (int64_t)st->time_base.num * st->time_base.den;
438  break;
439  default:
440  break;
441  }
442 
443  if (!st->internal->priv_pts)
444  st->internal->priv_pts = av_mallocz(sizeof(*st->internal->priv_pts));
445  if (!st->internal->priv_pts)
446  return AVERROR(ENOMEM);
447 
448  if (den != AV_NOPTS_VALUE) {
449  if (den <= 0)
450  return AVERROR_INVALIDDATA;
451 
452  frac_init(st->internal->priv_pts, 0, 0, den);
453  }
454  }
455 
456  if (s->avoid_negative_ts < 0) {
459  s->avoid_negative_ts = 0;
460  } else
462  }
463 
464  return 0;
465 }
466 
468 {
469  if (s->pb && s->pb->error >= 0) {
470  if (s->flush_packets == 1 || s->flags & AVFMT_FLAG_FLUSH_PACKETS)
471  avio_flush(s->pb);
472  else if (s->flush_packets && !(s->oformat->flags & AVFMT_NOFILE))
474  }
475 }
476 
478 {
479  if (s->oformat && s->oformat->deinit && s->internal->initialized)
480  s->oformat->deinit(s);
481  s->internal->initialized =
483 }
484 
486 {
487  int ret = 0;
488 
489  if ((ret = init_muxer(s, options)) < 0)
490  return ret;
491 
492  s->internal->initialized = 1;
493  s->internal->streams_initialized = ret;
494 
495  if (s->oformat->init && ret) {
496  if ((ret = init_pts(s)) < 0)
497  return ret;
498 
500  }
501 
503 }
504 
506 {
507  int ret = 0;
508  int already_initialized = s->internal->initialized;
509  int streams_already_initialized = s->internal->streams_initialized;
510 
511  if (!already_initialized)
512  if ((ret = avformat_init_output(s, options)) < 0)
513  return ret;
514 
515  if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
517  if (s->oformat->write_header) {
518  ret = s->oformat->write_header(s);
519  if (ret >= 0 && s->pb && s->pb->error < 0)
520  ret = s->pb->error;
521  if (ret < 0)
522  goto fail;
523  flush_if_needed(s);
524  }
525  if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
527 
528  if (!s->internal->streams_initialized) {
529  if ((ret = init_pts(s)) < 0)
530  goto fail;
531  }
532 
533  return streams_already_initialized;
534 
535 fail:
536  deinit_muxer(s);
537  return ret;
538 }
539 
540 #define AV_PKT_FLAG_UNCODED_FRAME 0x2000
541 
542 
543 #if FF_API_COMPUTE_PKT_FIELDS2 && FF_API_LAVF_AVCTX
545 //FIXME merge with compute_pkt_fields
546 static int compute_muxer_pkt_fields(AVFormatContext *s, AVStream *st, AVPacket *pkt)
547 {
548  int delay = FFMAX(st->codecpar->video_delay, st->internal->avctx->max_b_frames > 0);
549  int num, den, i;
550  int frame_size;
551 
552  if (!s->internal->missing_ts_warning &&
553  !(s->oformat->flags & AVFMT_NOTIMESTAMPS) &&
555  (pkt->pts == AV_NOPTS_VALUE || pkt->dts == AV_NOPTS_VALUE)) {
557  "Timestamps are unset in a packet for stream %d. "
558  "This is deprecated and will stop working in the future. "
559  "Fix your code to set the timestamps properly\n", st->index);
560  s->internal->missing_ts_warning = 1;
561  }
562 
563  if (s->debug & FF_FDEBUG_TS)
564  av_log(s, AV_LOG_DEBUG, "compute_muxer_pkt_fields: pts:%s dts:%s cur_dts:%s b:%d size:%d st:%d\n",
565  av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts), delay, pkt->size, pkt->stream_index);
566 
567  if (pkt->duration < 0 && st->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE) {
568  av_log(s, AV_LOG_WARNING, "Packet with invalid duration %"PRId64" in stream %d\n",
569  pkt->duration, pkt->stream_index);
570  pkt->duration = 0;
571  }
572 
573  /* duration field */
574  if (pkt->duration == 0) {
575  ff_compute_frame_duration(s, &num, &den, st, NULL, pkt);
576  if (den && num) {
577  pkt->duration = av_rescale(1, num * (int64_t)st->time_base.den * st->codec->ticks_per_frame, den * (int64_t)st->time_base.num);
578  }
579  }
580 
581  if (pkt->pts == AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE && delay == 0)
582  pkt->pts = pkt->dts;
583 
584  //XXX/FIXME this is a temporary hack until all encoders output pts
585  if ((pkt->pts == 0 || pkt->pts == AV_NOPTS_VALUE) && pkt->dts == AV_NOPTS_VALUE && !delay) {
586  static int warned;
587  if (!warned) {
588  av_log(s, AV_LOG_WARNING, "Encoder did not produce proper pts, making some up.\n");
589  warned = 1;
590  }
591  pkt->dts =
592 // pkt->pts= st->cur_dts;
593  pkt->pts = st->internal->priv_pts->val;
594  }
595 
596  //calculate dts from pts
597  if (pkt->pts != AV_NOPTS_VALUE && pkt->dts == AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY) {
598  st->pts_buffer[0] = pkt->pts;
599  for (i = 1; i < delay + 1 && st->pts_buffer[i] == AV_NOPTS_VALUE; i++)
600  st->pts_buffer[i] = pkt->pts + (i - delay - 1) * pkt->duration;
601  for (i = 0; i<delay && st->pts_buffer[i] > st->pts_buffer[i + 1]; i++)
602  FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i + 1]);
603 
604  pkt->dts = st->pts_buffer[0];
605  }
606 
607  if (st->cur_dts && st->cur_dts != AV_NOPTS_VALUE &&
608  ((!(s->oformat->flags & AVFMT_TS_NONSTRICT) &&
611  st->cur_dts >= pkt->dts) || st->cur_dts > pkt->dts)) {
612  av_log(s, AV_LOG_ERROR,
613  "Application provided invalid, non monotonically increasing dts to muxer in stream %d: %s >= %s\n",
614  st->index, av_ts2str(st->cur_dts), av_ts2str(pkt->dts));
615  return AVERROR(EINVAL);
616  }
617  if (pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts < pkt->dts) {
618  av_log(s, AV_LOG_ERROR,
619  "pts (%s) < dts (%s) in stream %d\n",
620  av_ts2str(pkt->pts), av_ts2str(pkt->dts),
621  st->index);
622  return AVERROR(EINVAL);
623  }
624 
625  if (s->debug & FF_FDEBUG_TS)
626  av_log(s, AV_LOG_DEBUG, "av_write_frame: pts2:%s dts2:%s\n",
627  av_ts2str(pkt->pts), av_ts2str(pkt->dts));
628 
629  st->cur_dts = pkt->dts;
630  st->internal->priv_pts->val = pkt->dts;
631 
632  /* update pts */
633  switch (st->codecpar->codec_type) {
634  case AVMEDIA_TYPE_AUDIO:
635  frame_size = (pkt->flags & AV_PKT_FLAG_UNCODED_FRAME) ?
636  (*(AVFrame **)pkt->data)->nb_samples :
637  av_get_audio_frame_duration(st->codec, pkt->size);
638 
639  /* HACK/FIXME, we skip the initial 0 size packets as they are most
640  * likely equal to the encoder delay, but it would be better if we
641  * had the real timestamps from the encoder */
642  if (frame_size >= 0 && (pkt->size || st->internal->priv_pts->num != st->internal->priv_pts->den >> 1 || st->internal->priv_pts->val)) {
643  frac_add(st->internal->priv_pts, (int64_t)st->time_base.den * frame_size);
644  }
645  break;
646  case AVMEDIA_TYPE_VIDEO:
648  break;
649  }
650  return 0;
651 }
653 #endif
654 
655 /**
656  * Shift timestamps and call muxer; the original pts/dts are not kept.
657  *
658  * FIXME: this function should NEVER get undefined pts/dts beside when the
659  * AVFMT_NOTIMESTAMPS is set.
660  * Those additional safety checks should be dropped once the correct checks
661  * are set in the callers.
662  */
664 {
665  int ret;
666 
667  // If the timestamp offsetting below is adjusted, adjust
668  // ff_interleaved_peek similarly.
669  if (s->output_ts_offset) {
670  AVStream *st = s->streams[pkt->stream_index];
672 
673  if (pkt->dts != AV_NOPTS_VALUE)
674  pkt->dts += offset;
675  if (pkt->pts != AV_NOPTS_VALUE)
676  pkt->pts += offset;
677  }
678 
679  if (s->avoid_negative_ts > 0) {
680  AVStream *st = s->streams[pkt->stream_index];
682  int64_t ts = s->internal->avoid_negative_ts_use_pts ? pkt->pts : pkt->dts;
683 
684  if (s->internal->offset == AV_NOPTS_VALUE && ts != AV_NOPTS_VALUE &&
685  (ts < 0 || s->avoid_negative_ts == AVFMT_AVOID_NEG_TS_MAKE_ZERO)) {
686  s->internal->offset = -ts;
688  }
689 
690  if (s->internal->offset != AV_NOPTS_VALUE && !offset) {
691  offset = st->mux_ts_offset =
694  st->time_base,
695  AV_ROUND_UP);
696  }
697 
698  if (pkt->dts != AV_NOPTS_VALUE)
699  pkt->dts += offset;
700  if (pkt->pts != AV_NOPTS_VALUE)
701  pkt->pts += offset;
702 
704  if (pkt->pts != AV_NOPTS_VALUE && pkt->pts < 0) {
705  av_log(s, AV_LOG_WARNING, "failed to avoid negative "
706  "pts %s in stream %d.\n"
707  "Try -avoid_negative_ts 1 as a possible workaround.\n",
708  av_ts2str(pkt->pts),
709  pkt->stream_index
710  );
711  }
712  } else {
713  av_assert2(pkt->dts == AV_NOPTS_VALUE || pkt->dts >= 0 || s->max_interleave_delta > 0);
714  if (pkt->dts != AV_NOPTS_VALUE && pkt->dts < 0) {
716  "Packets poorly interleaved, failed to avoid negative "
717  "timestamp %s in stream %d.\n"
718  "Try -max_interleave_delta 0 as a possible workaround.\n",
719  av_ts2str(pkt->dts),
720  pkt->stream_index
721  );
722  }
723  }
724  }
725 
726  if ((pkt->flags & AV_PKT_FLAG_UNCODED_FRAME)) {
727  AVFrame **frame = (AVFrame **)pkt->data;
728  av_assert0(pkt->size == sizeof(*frame));
729  ret = s->oformat->write_uncoded_frame(s, pkt->stream_index, frame, 0);
730  } else {
731  ret = s->oformat->write_packet(s, pkt);
732  }
733 
734  if (s->pb && ret >= 0) {
735  flush_if_needed(s);
736  if (s->pb->error < 0)
737  ret = s->pb->error;
738  }
739 
740  if (ret >= 0)
741  s->streams[pkt->stream_index]->nb_frames++;
742 
743  return ret;
744 }
745 
747 {
748  if (pkt->stream_index < 0 || pkt->stream_index >= s->nb_streams) {
749  av_log(s, AV_LOG_ERROR, "Invalid packet stream index: %d\n",
750  pkt->stream_index);
751  return AVERROR(EINVAL);
752  }
753 
755  av_log(s, AV_LOG_ERROR, "Received a packet for an attachment stream.\n");
756  return AVERROR(EINVAL);
757  }
758 
759  return 0;
760 }
761 
763 {
764 #if !FF_API_COMPUTE_PKT_FIELDS2 || !FF_API_LAVF_AVCTX
765  /* sanitize the timestamps */
766  if (!(s->oformat->flags & AVFMT_NOTIMESTAMPS)) {
767 
768  /* when there is no reordering (so dts is equal to pts), but
769  * only one of them is set, set the other as well */
770  if (!st->internal->reorder) {
771  if (pkt->pts == AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE)
772  pkt->pts = pkt->dts;
773  if (pkt->dts == AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE)
774  pkt->dts = pkt->pts;
775  }
776 
777  /* check that the timestamps are set */
778  if (pkt->pts == AV_NOPTS_VALUE || pkt->dts == AV_NOPTS_VALUE) {
779  av_log(s, AV_LOG_ERROR,
780  "Timestamps are unset in a packet for stream %d\n", st->index);
781  return AVERROR(EINVAL);
782  }
783 
784  /* check that the dts are increasing (or at least non-decreasing,
785  * if the format allows it */
786  if (st->cur_dts != AV_NOPTS_VALUE &&
787  ((!(s->oformat->flags & AVFMT_TS_NONSTRICT) && st->cur_dts >= pkt->dts) ||
788  st->cur_dts > pkt->dts)) {
789  av_log(s, AV_LOG_ERROR,
790  "Application provided invalid, non monotonically increasing "
791  "dts to muxer in stream %d: %" PRId64 " >= %" PRId64 "\n",
792  st->index, st->cur_dts, pkt->dts);
793  return AVERROR(EINVAL);
794  }
795 
796  if (pkt->pts < pkt->dts) {
797  av_log(s, AV_LOG_ERROR, "pts %" PRId64 " < dts %" PRId64 " in stream %d\n",
798  pkt->pts, pkt->dts, st->index);
799  return AVERROR(EINVAL);
800  }
801  }
802 #endif
803  /* update flags */
804  if (st->internal->is_intra_only)
805  pkt->flags |= AV_PKT_FLAG_KEY;
806 
807  return 0;
808 }
809 
810 #define CHUNK_START 0x1000
811 
813  int (*compare)(AVFormatContext *, const AVPacket *, const AVPacket *))
814 {
815  int ret;
816  AVPacketList **next_point, *this_pktl;
817  AVStream *st = s->streams[pkt->stream_index];
818  int chunked = s->max_chunk_size || s->max_chunk_duration;
819 
820  this_pktl = av_malloc(sizeof(AVPacketList));
821  if (!this_pktl) {
822  av_packet_unref(pkt);
823  return AVERROR(ENOMEM);
824  }
825  if ((ret = av_packet_make_refcounted(pkt)) < 0) {
826  av_free(this_pktl);
827  av_packet_unref(pkt);
828  return ret;
829  }
830 
831  av_packet_move_ref(&this_pktl->pkt, pkt);
832  pkt = &this_pktl->pkt;
833 
834  if (st->last_in_packet_buffer) {
835  next_point = &(st->last_in_packet_buffer->next);
836  } else {
837  next_point = &s->internal->packet_buffer;
838  }
839 
840  if (chunked) {
842  st->interleaver_chunk_size += pkt->size;
845  || (max && st->interleaver_chunk_duration > max)) {
846  st->interleaver_chunk_size = 0;
847  pkt->flags |= CHUNK_START;
848  if (max && st->interleaver_chunk_duration > max) {
849  int64_t syncoffset = (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)*max/2;
850  int64_t syncto = av_rescale(pkt->dts + syncoffset, 1, max)*max - syncoffset;
851 
852  st->interleaver_chunk_duration += (pkt->dts - syncto)/8 - max;
853  } else
855  }
856  }
857  if (*next_point) {
858  if (chunked && !(pkt->flags & CHUNK_START))
859  goto next_non_null;
860 
861  if (compare(s, &s->internal->packet_buffer_end->pkt, pkt)) {
862  while ( *next_point
863  && ((chunked && !((*next_point)->pkt.flags&CHUNK_START))
864  || !compare(s, &(*next_point)->pkt, pkt)))
865  next_point = &(*next_point)->next;
866  if (*next_point)
867  goto next_non_null;
868  } else {
869  next_point = &(s->internal->packet_buffer_end->next);
870  }
871  }
872  av_assert1(!*next_point);
873 
874  s->internal->packet_buffer_end = this_pktl;
875 next_non_null:
876 
877  this_pktl->next = *next_point;
878 
879  st->last_in_packet_buffer = *next_point = this_pktl;
880 
881  return 0;
882 }
883 
885  const AVPacket *pkt)
886 {
887  AVStream *st = s->streams[pkt->stream_index];
888  AVStream *st2 = s->streams[next->stream_index];
889  int comp = av_compare_ts(next->dts, st2->time_base, pkt->dts,
890  st->time_base);
891  if (s->audio_preload) {
892  int preload = st ->codecpar->codec_type == AVMEDIA_TYPE_AUDIO;
893  int preload2 = st2->codecpar->codec_type == AVMEDIA_TYPE_AUDIO;
894  if (preload != preload2) {
895  int64_t ts, ts2;
896  preload *= s->audio_preload;
897  preload2 *= s->audio_preload;
898  ts = av_rescale_q(pkt ->dts, st ->time_base, AV_TIME_BASE_Q) - preload;
899  ts2= av_rescale_q(next->dts, st2->time_base, AV_TIME_BASE_Q) - preload2;
900  if (ts == ts2) {
901  ts = ((uint64_t)pkt ->dts*st ->time_base.num*AV_TIME_BASE - (uint64_t)preload *st ->time_base.den)*st2->time_base.den
902  - ((uint64_t)next->dts*st2->time_base.num*AV_TIME_BASE - (uint64_t)preload2*st2->time_base.den)*st ->time_base.den;
903  ts2 = 0;
904  }
905  comp = (ts2 > ts) - (ts2 < ts);
906  }
907  }
908 
909  if (comp == 0)
910  return pkt->stream_index < next->stream_index;
911  return comp > 0;
912 }
913 
915  AVPacket *pkt, int flush)
916 {
917  AVPacketList *pktl;
918  int stream_count = 0;
919  int noninterleaved_count = 0;
920  int i, ret;
921  int eof = flush;
922 
923  if (pkt) {
924  if ((ret = ff_interleave_add_packet(s, pkt, interleave_compare_dts)) < 0)
925  return ret;
926  }
927 
928  for (i = 0; i < s->nb_streams; i++) {
929  if (s->streams[i]->last_in_packet_buffer) {
930  ++stream_count;
931  } else if (s->streams[i]->codecpar->codec_type != AVMEDIA_TYPE_ATTACHMENT &&
934  ++noninterleaved_count;
935  }
936  }
937 
938  if (s->internal->nb_interleaved_streams == stream_count)
939  flush = 1;
940 
941  if (s->max_interleave_delta > 0 &&
942  s->internal->packet_buffer &&
943  !flush &&
944  s->internal->nb_interleaved_streams == stream_count+noninterleaved_count
945  ) {
946  AVPacket *top_pkt = &s->internal->packet_buffer->pkt;
947  int64_t delta_dts = INT64_MIN;
948  int64_t top_dts = av_rescale_q(top_pkt->dts,
949  s->streams[top_pkt->stream_index]->time_base,
951 
952  for (i = 0; i < s->nb_streams; i++) {
953  int64_t last_dts;
954  const AVPacketList *last = s->streams[i]->last_in_packet_buffer;
955 
956  if (!last)
957  continue;
958 
959  last_dts = av_rescale_q(last->pkt.dts,
960  s->streams[i]->time_base,
962  delta_dts = FFMAX(delta_dts, last_dts - top_dts);
963  }
964 
965  if (delta_dts > s->max_interleave_delta) {
966  av_log(s, AV_LOG_DEBUG,
967  "Delay between the first packet and last packet in the "
968  "muxing queue is %"PRId64" > %"PRId64": forcing output\n",
969  delta_dts, s->max_interleave_delta);
970  flush = 1;
971  }
972  }
973 
974  if (s->internal->packet_buffer &&
975  eof &&
976  (s->flags & AVFMT_FLAG_SHORTEST) &&
978  AVPacket *top_pkt = &s->internal->packet_buffer->pkt;
979 
980  s->internal->shortest_end = av_rescale_q(top_pkt->dts,
981  s->streams[top_pkt->stream_index]->time_base,
983  }
984 
985  if (s->internal->shortest_end != AV_NOPTS_VALUE) {
986  while (s->internal->packet_buffer) {
987  AVPacket *top_pkt = &s->internal->packet_buffer->pkt;
988  AVStream *st;
989  int64_t top_dts = av_rescale_q(top_pkt->dts,
990  s->streams[top_pkt->stream_index]->time_base,
992 
993  if (s->internal->shortest_end + 1 >= top_dts)
994  break;
995 
996  pktl = s->internal->packet_buffer;
997  st = s->streams[pktl->pkt.stream_index];
998 
999  s->internal->packet_buffer = pktl->next;
1000  if (!s->internal->packet_buffer)
1002 
1003  if (st->last_in_packet_buffer == pktl)
1005 
1006  av_packet_unref(&pktl->pkt);
1007  av_freep(&pktl);
1008  flush = 0;
1009  }
1010  }
1011 
1012  if (stream_count && flush) {
1013  AVStream *st;
1014  pktl = s->internal->packet_buffer;
1015  *out = pktl->pkt;
1016  st = s->streams[out->stream_index];
1017 
1018  s->internal->packet_buffer = pktl->next;
1019  if (!s->internal->packet_buffer)
1021 
1022  if (st->last_in_packet_buffer == pktl)
1024  av_freep(&pktl);
1025 
1026  return 1;
1027  } else {
1028  return 0;
1029  }
1030 }
1031 
1033  AVPacket *pkt, int add_offset)
1034 {
1035  AVPacketList *pktl = s->internal->packet_buffer;
1036  while (pktl) {
1037  if (pktl->pkt.stream_index == stream) {
1038  *pkt = pktl->pkt;
1039  if (add_offset) {
1040  AVStream *st = s->streams[pkt->stream_index];
1042 
1043  if (s->output_ts_offset)
1045 
1046  if (pkt->dts != AV_NOPTS_VALUE)
1047  pkt->dts += offset;
1048  if (pkt->pts != AV_NOPTS_VALUE)
1049  pkt->pts += offset;
1050  }
1051  return 0;
1052  }
1053  pktl = pktl->next;
1054  }
1055  return AVERROR(ENOENT);
1056 }
1057 
1058 /**
1059  * Interleave an AVPacket correctly so it can be muxed.
1060  * @param out the interleaved packet will be output here
1061  * @param in the input packet; will always be blank on return if not NULL
1062  * @param flush 1 if no further packets are available as input and all
1063  * remaining packets should be output
1064  * @return 1 if a packet was output, 0 if no packet could be output,
1065  * < 0 if an error occurred
1066  */
1068 {
1069  if (s->oformat->interleave_packet) {
1070  return s->oformat->interleave_packet(s, out, in, flush);
1071  } else
1072  return ff_interleave_packet_per_dts(s, out, in, flush);
1073 }
1074 
1076 {
1077  int ret;
1078 
1079  if (!(s->flags & AVFMT_FLAG_AUTO_BSF))
1080  return 1;
1081 
1082  if (s->oformat->check_bitstream) {
1083  if (!st->internal->bitstream_checked) {
1084  if ((ret = s->oformat->check_bitstream(s, pkt)) < 0)
1085  return ret;
1086  else if (ret == 1)
1087  st->internal->bitstream_checked = 1;
1088  }
1089  }
1090 
1091  return 1;
1092 }
1093 
1095 {
1096  for (;; ) {
1097  AVPacket opkt;
1098  int ret = interleave_packet(s, &opkt, pkt, flush);
1099  if (ret <= 0)
1100  return ret;
1101 
1102  pkt = NULL;
1103 
1104  ret = write_packet(s, &opkt);
1105 
1106  av_packet_unref(&opkt);
1107 
1108  if (ret < 0)
1109  return ret;
1110  }
1111 }
1112 
1113 static int write_packet_common(AVFormatContext *s, AVStream *st, AVPacket *pkt, int interleaved)
1114 {
1115  int ret;
1116 
1117  if (s->debug & FF_FDEBUG_TS)
1118  av_log(s, AV_LOG_DEBUG, "%s size:%d dts:%s pts:%s\n", __FUNCTION__,
1119  pkt->size, av_ts2str(pkt->dts), av_ts2str(pkt->pts));
1120 
1121 #if FF_API_COMPUTE_PKT_FIELDS2 && FF_API_LAVF_AVCTX
1122  if ((ret = compute_muxer_pkt_fields(s, st, pkt)) < 0 && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
1123  return ret;
1124 #endif
1125 
1126  if (interleaved) {
1127  if (pkt->dts == AV_NOPTS_VALUE && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
1128  return AVERROR(EINVAL);
1129  return interleaved_write_packet(s, pkt, 0);
1130  } else {
1131  return write_packet(s, pkt);
1132  }
1133 }
1134 
1135 static int write_packets_from_bsfs(AVFormatContext *s, AVStream *st, AVPacket *pkt, int interleaved)
1136 {
1137  AVBSFContext *bsfc = st->internal->bsfc;
1138  int ret;
1139 
1140  if ((ret = av_bsf_send_packet(bsfc, pkt)) < 0) {
1141  av_log(s, AV_LOG_ERROR,
1142  "Failed to send packet to filter %s for stream %d\n",
1143  bsfc->filter->name, st->index);
1144  return ret;
1145  }
1146 
1147  do {
1148  ret = av_bsf_receive_packet(bsfc, pkt);
1149  if (ret < 0) {
1150  if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
1151  return 0;
1152  av_log(s, AV_LOG_ERROR, "Error applying bitstream filters to an output "
1153  "packet for stream #%d: %s\n", st->index, av_err2str(ret));
1154  if (!(s->error_recognition & AV_EF_EXPLODE) && ret != AVERROR(ENOMEM))
1155  continue;
1156  return ret;
1157  }
1158  av_packet_rescale_ts(pkt, bsfc->time_base_out, st->time_base);
1159  ret = write_packet_common(s, st, pkt, interleaved);
1160  if (ret >= 0 && !interleaved) // a successful write_packet_common already unrefed pkt for interleaved
1161  av_packet_unref(pkt);
1162  } while (ret >= 0);
1163 
1164  return ret;
1165 }
1166 
1167 static int write_packets_common(AVFormatContext *s, AVPacket *pkt, int interleaved)
1168 {
1169  AVStream *st;
1170  int ret = check_packet(s, pkt);
1171  if (ret < 0)
1172  return ret;
1173  st = s->streams[pkt->stream_index];
1174 
1175  ret = prepare_input_packet(s, st, pkt);
1176  if (ret < 0)
1177  return ret;
1178 
1179  ret = check_bitstream(s, st, pkt);
1180  if (ret < 0)
1181  return ret;
1182 
1183  if (st->internal->bsfc) {
1184  return write_packets_from_bsfs(s, st, pkt, interleaved);
1185  } else {
1186  return write_packet_common(s, st, pkt, interleaved);
1187  }
1188 }
1189 
1191 {
1192  AVPacket local_pkt, *pkt = &local_pkt;
1193  int ret;
1194 
1195  if (!in) {
1196  if (s->oformat->flags & AVFMT_ALLOW_FLUSH) {
1197  ret = s->oformat->write_packet(s, NULL);
1198  flush_if_needed(s);
1199  if (ret >= 0 && s->pb && s->pb->error < 0)
1200  ret = s->pb->error;
1201  return ret;
1202  }
1203  return 1;
1204  }
1205 
1206  if (in->flags & AV_PKT_FLAG_UNCODED_FRAME) {
1207  pkt = in;
1208  } else {
1209  /* We don't own in, so we have to make sure not to modify it.
1210  * The following avoids copying in's data unnecessarily.
1211  * Copying side data is unavoidable as a bitstream filter
1212  * may change it, e.g. free it on errors. */
1213  pkt->buf = NULL;
1214  pkt->data = in->data;
1215  pkt->size = in->size;
1216  ret = av_packet_copy_props(pkt, in);
1217  if (ret < 0)
1218  return ret;
1219  if (in->buf) {
1220  pkt->buf = av_buffer_ref(in->buf);
1221  if (!pkt->buf) {
1222  ret = AVERROR(ENOMEM);
1223  goto fail;
1224  }
1225  }
1226  }
1227 
1228  ret = write_packets_common(s, pkt, 0/*non-interleaved*/);
1229 
1230 fail:
1231  // Uncoded frames using the noninterleaved codepath are also freed here
1232  av_packet_unref(pkt);
1233  return ret;
1234 }
1235 
1237 {
1238  int ret;
1239 
1240  if (pkt) {
1241  ret = write_packets_common(s, pkt, 1/*interleaved*/);
1242  if (ret < 0)
1243  av_packet_unref(pkt);
1244  return ret;
1245  } else {
1246  av_log(s, AV_LOG_TRACE, "av_interleaved_write_frame FLUSH\n");
1247  return interleaved_write_packet(s, NULL, 1/*flush*/);
1248  }
1249 }
1250 
1252 {
1253  int i, ret1, ret = 0;
1254  AVPacket pkt = {0};
1255  av_init_packet(&pkt);
1256 
1257  for (i = 0; i < s->nb_streams; i++) {
1258  if (s->streams[i]->internal->bsfc) {
1259  ret1 = write_packets_from_bsfs(s, s->streams[i], &pkt, 1/*interleaved*/);
1260  if (ret1 < 0)
1261  av_packet_unref(&pkt);
1262  if (ret >= 0)
1263  ret = ret1;
1264  }
1265  }
1266  ret1 = interleaved_write_packet(s, NULL, 1);
1267  if (ret >= 0)
1268  ret = ret1;
1269 
1270  if (s->oformat->write_trailer) {
1271  if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
1273  if (ret >= 0) {
1274  ret = s->oformat->write_trailer(s);
1275  } else {
1276  s->oformat->write_trailer(s);
1277  }
1278  }
1279 
1280  deinit_muxer(s);
1281 
1282  if (s->pb)
1283  avio_flush(s->pb);
1284  if (ret == 0)
1285  ret = s->pb ? s->pb->error : 0;
1286  for (i = 0; i < s->nb_streams; i++) {
1287  av_freep(&s->streams[i]->priv_data);
1288  av_freep(&s->streams[i]->index_entries);
1289  }
1290  if (s->oformat->priv_class)
1291  av_opt_free(s->priv_data);
1292  av_freep(&s->priv_data);
1293  return ret;
1294 }
1295 
1296 int av_get_output_timestamp(struct AVFormatContext *s, int stream,
1297  int64_t *dts, int64_t *wall)
1298 {
1299  if (!s->oformat || !s->oformat->get_output_timestamp)
1300  return AVERROR(ENOSYS);
1301  s->oformat->get_output_timestamp(s, stream, dts, wall);
1302  return 0;
1303 }
1304 
1305 int ff_write_chained(AVFormatContext *dst, int dst_stream, AVPacket *pkt,
1307 {
1308  AVPacket local_pkt;
1309  int ret;
1310 
1311  local_pkt = *pkt;
1312  local_pkt.stream_index = dst_stream;
1313 
1314  av_packet_rescale_ts(&local_pkt,
1315  src->streams[pkt->stream_index]->time_base,
1316  dst->streams[dst_stream]->time_base);
1317 
1318  if (interleave) ret = av_interleaved_write_frame(dst, &local_pkt);
1319  else ret = av_write_frame(dst, &local_pkt);
1320  pkt->buf = local_pkt.buf;
1321  pkt->side_data = local_pkt.side_data;
1322  pkt->side_data_elems = local_pkt.side_data_elems;
1323  return ret;
1324 }
1325 
1326 static void uncoded_frame_free(void *unused, uint8_t *data)
1327 {
1328  av_frame_free((AVFrame **)data);
1329  av_free(data);
1330 }
1331 
1332 static int write_uncoded_frame_internal(AVFormatContext *s, int stream_index,
1333  AVFrame *frame, int interleaved)
1334 {
1335  AVPacket pkt, *pktp;
1336 
1337  av_assert0(s->oformat);
1338  if (!s->oformat->write_uncoded_frame) {
1339  av_frame_free(&frame);
1340  return AVERROR(ENOSYS);
1341  }
1342 
1343  if (!frame) {
1344  pktp = NULL;
1345  } else {
1346  size_t bufsize = sizeof(frame) + AV_INPUT_BUFFER_PADDING_SIZE;
1347  AVFrame **framep = av_mallocz(bufsize);
1348 
1349  if (!framep)
1350  goto fail;
1351  pktp = &pkt;
1352  av_init_packet(&pkt);
1353  pkt.buf = av_buffer_create((void *)framep, bufsize,
1354  uncoded_frame_free, NULL, 0);
1355  if (!pkt.buf) {
1356  av_free(framep);
1357  fail:
1358  av_frame_free(&frame);
1359  return AVERROR(ENOMEM);
1360  }
1361  *framep = frame;
1362 
1363  pkt.data = (void *)framep;
1364  pkt.size = sizeof(frame);
1365  pkt.pts =
1366  pkt.dts = frame->pts;
1367  pkt.duration = frame->pkt_duration;
1368  pkt.stream_index = stream_index;
1370  }
1371 
1372  return interleaved ? av_interleaved_write_frame(s, pktp) :
1373  av_write_frame(s, pktp);
1374 }
1375 
1376 int av_write_uncoded_frame(AVFormatContext *s, int stream_index,
1377  AVFrame *frame)
1378 {
1379  return write_uncoded_frame_internal(s, stream_index, frame, 0);
1380 }
1381 
1383  AVFrame *frame)
1384 {
1385  return write_uncoded_frame_internal(s, stream_index, frame, 1);
1386 }
1387 
1389 {
1390  av_assert0(s->oformat);
1391  if (!s->oformat->write_uncoded_frame)
1392  return AVERROR(ENOSYS);
1393  return s->oformat->write_uncoded_frame(s, stream_index, NULL,
1395 }
int avformat_alloc_output_context2(AVFormatContext **avctx, ff_const59 AVOutputFormat *oformat, const char *format, const char *filename)
Allocate an AVFormatContext for an output format.
Definition: mux.c:135
#define AV_CODEC_PROP_REORDER
Codec supports frame reordering.
Definition: codec_desc.h:92
static float compare(const AVFrame *haystack, const AVFrame *obj, int offx, int offy)
Definition: vf_find_rect.c:104
int64_t interleaver_chunk_size
Definition: avformat.h:1124
enum AVChromaLocation chroma_location
Definition: codec_par.h:150
#define NULL
Definition: coverity.c:32
enum AVFieldOrder field_order
Video only.
Definition: codec_par.h:141
AVBSFContext * bsfc
bitstream filter to run on stream
Definition: internal.h:159
int audio_preload
Audio preload in microseconds.
Definition: avformat.h:1699
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
static int check_packet(AVFormatContext *s, AVPacket *pkt)
Definition: mux.c:746
enum AVCodecID id
Definition: internal.h:43
static const char * format[]
Definition: af_aiir.c:339
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2549
MPEG-2/4 4:2:0, H.264 default for 4:2:0.
Definition: pixfmt.h:556
This structure describes decoded (raw) audio or video data.
Definition: frame.h:300
int av_interleaved_write_frame(AVFormatContext *s, AVPacket *pkt)
Write a packet to an output media file ensuring correct interleaving.
Definition: mux.c:1236
int bitstream_checked
Whether or not check_bitstream should still be run on each packet.
Definition: internal.h:164
FFFrac * priv_pts
Definition: internal.h:193
static void flush(AVCodecContext *avctx)
static void uncoded_frame_free(void *unused, uint8_t *data)
Definition: mux.c:1326
int flush_packets
Flush the I/O context after each packet.
Definition: avformat.h:1766
int av_write_frame(AVFormatContext *s, AVPacket *in)
Write a packet to an output media file.
Definition: mux.c:1190
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
int reorder
Set to 1 if the codec allows reordering, so pts can be different from dts.
Definition: internal.h:152
void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits, unsigned int pts_num, unsigned int pts_den)
Set the time base and wrapping info for a given stream.
Definition: utils.c:4948
int64_t pts_buffer[MAX_REORDER_DELAY+1]
Definition: avformat.h:1103
const char * desc
Definition: nvenc.c:79
int(* init)(struct AVFormatContext *)
Initialize format.
Definition: avformat.h:620
#define AVSTREAM_INIT_IN_INIT_OUTPUT
stream parameters initialized in avformat_init_output
Definition: avformat.h:2523
int max_b_frames
maximum number of B-frames between non-B-frames Note: The output will be delayed by max_b_frames+1 re...
Definition: avcodec.h:786
AVRational sample_aspect_ratio
Video only.
Definition: codec_par.h:136
void av_opt_set_defaults(void *s)
Set the values of all AVOption fields to their default values.
Definition: opt.c:1357
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: codec_par.h:60
const struct AVBitStreamFilter * filter
The bitstream filter this context is an instance of.
Definition: bsf.h:58
AVRational sample_aspect_ratio
sample aspect ratio (0 if unknown)
Definition: avformat.h:938
int num
Numerator.
Definition: rational.h:59
The bitstream filter state.
Definition: bsf.h:49
int index
stream index in AVFormatContext
Definition: avformat.h:877
static int prepare_input_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)
Definition: mux.c:762
int size
Definition: packet.h:356
int ff_interleave_packet_per_dts(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
Interleave an AVPacket per dts so it can be muxed.
Definition: mux.c:914
AVIndexEntry * index_entries
Only used if the format does not support seeking natively.
Definition: avformat.h:1105
AVFormatInternal * internal
An opaque field for libavformat internal usage.
Definition: avformat.h:1804
static void deinit_muxer(AVFormatContext *s)
Definition: mux.c:477
int av_dict_copy(AVDictionary **dst, const AVDictionary *src, int flags)
Copy entries from one AVDictionary struct into another.
Definition: dict.c:217
int av_get_output_timestamp(struct AVFormatContext *s, int stream, int64_t *dts, int64_t *wall)
Get timing information for the data currently output.
Definition: mux.c:1296
static int write_uncoded_frame_internal(AVFormatContext *s, int stream_index, AVFrame *frame, int interleaved)
Definition: mux.c:1332
int64_t offset
Offset to remap timestamps to be non-negative.
Definition: internal.h:106
void * priv_data
Definition: avformat.h:891
int avoid_negative_ts_use_pts
Definition: internal.h:119
static AVPacket pkt
int av_write_uncoded_frame_query(AVFormatContext *s, int stream_index)
Test whether a muxer supports uncoded frame.
Definition: mux.c:1388
static void error(const char *err)
#define AVFMT_ALLOW_FLUSH
Format allows flushing.
Definition: avformat.h:471
Round toward +infinity.
Definition: mathematics.h:83
int strict_std_compliance
Allow non-standard and experimental extension.
Definition: avformat.h:1659
uint8_t log2_chroma_w
Amount to shift the luma width right to find the chroma width.
Definition: pixdesc.h:92
#define AVFMT_TS_NONSTRICT
Format does not require strictly increasing timestamps, but they must still be monotonic.
Definition: avformat.h:472
This struct describes the properties of an encoded stream.
Definition: codec_par.h:52
int ff_write_chained(AVFormatContext *dst, int dst_stream, AVPacket *pkt, AVFormatContext *src, int interleave)
Write a packet to another muxer than the one the user originally intended.
Definition: mux.c:1305
static int write_packets_common(AVFormatContext *s, AVPacket *pkt, int interleaved)
Definition: mux.c:1167
int(* interleave_packet)(struct AVFormatContext *, AVPacket *out, AVPacket *in, int flush)
A format-specific function for interleavement.
Definition: avformat.h:566
Trailer data, which doesn&#39;t contain actual content, but only for finalizing the output file...
Definition: avio.h:140
Format I/O context.
Definition: avformat.h:1351
int64_t output_ts_offset
Output timestamp offset, in microseconds.
Definition: avformat.h:1868
int64_t cur_dts
Definition: avformat.h:1079
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
#define CHUNK_START
Definition: mux.c:810
Public dictionary API.
static void flush_if_needed(AVFormatContext *s)
Definition: mux.c:467
int flags
can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER, AVFMT_GLOBALHEADER, AVFMT_NOTIMESTAMPS, AVFMT_VARIABLE_FPS, AVFMT_NODIMENSIONS, AVFMT_NOSTREAMS, AVFMT_ALLOW_FLUSH, AVFMT_TS_NONSTRICT, AVFMT_TS_NEGATIVE
Definition: avformat.h:519
uint8_t
#define av_malloc(s)
Opaque data information usually continuous.
Definition: avutil.h:203
int width
Video only.
Definition: codec_par.h:126
#define av_assert2(cond)
assert() equivalent, that does lie in speed critical code.
Definition: avassert.h:64
AVOptions.
A point in the output bytestream where the underlying AVIOContext might flush the buffer depending on...
Definition: avio.h:146
timestamp utils, mostly useful for debugging/logging purposes
Query whether the feature is possible on this stream.
Definition: internal.h:620
#define AV_LOG_TRACE
Extremely verbose debugging, useful for libav* development.
Definition: log.h:202
AVPacket pkt
Definition: avformat.h:2025
#define f(width, name)
Definition: cbs_vp9.c:255
int priv_data_size
size of private data so that it can be allocated in the wrapper
Definition: avformat.h:550
The exact value of the fractional number is: &#39;val + num / den&#39;.
Definition: internal.h:59
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
Definition: packet.h:373
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:393
void avio_write_marker(AVIOContext *s, int64_t time, enum AVIODataMarkerType type)
Mark the written bytestream as a specific type.
Definition: aviobuf.c:471
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1419
static AVFrame * frame
AVFormatContext * avformat_alloc_context(void)
Allocate an AVFormatContext.
Definition: options.c:144
const char data[16]
Definition: mxf.c:91
const char * name
Definition: bsf.h:99
void ff_compute_frame_duration(AVFormatContext *s, int *pnum, int *pden, AVStream *st, AVCodecParserContext *pc, AVPacket *pkt)
Return the frame duration in seconds.
Definition: utils.c:954
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
int flags
Flags modifying the (de)muxer behaviour.
Definition: avformat.h:1482
uint8_t * data
Definition: packet.h:355
static double av_q2d(AVRational a)
Convert an AVRational to a double.
Definition: rational.h:104
int64_t max_interleave_delta
Maximum buffering duration for interleaving.
Definition: avformat.h:1653
void av_packet_move_ref(AVPacket *dst, AVPacket *src)
Move every field in src to dst and reset src.
Definition: avpacket.c:663
uint32_t tag
Definition: movenc.c:1532
#define AVERROR_EOF
End of file.
Definition: error.h:55
#define max(a, b)
Definition: cuda_runtime.h:33
struct AVPacketList * packet_buffer
This buffer is only needed when packets were already buffered but not decoded, for example to get the...
Definition: internal.h:76
#define AVSTREAM_INIT_IN_WRITE_HEADER
stream parameters initialized in avformat_write_header
Definition: avformat.h:2522
static int interleave_packet(AVFormatContext *s, AVPacket *out, AVPacket *in, int flush)
Interleave an AVPacket correctly so it can be muxed.
Definition: mux.c:1067
#define AVFMT_FLAG_BITEXACT
When muxing, try to avoid writing any random/volatile data to the output.
Definition: avformat.h:1499
#define av_log(a,...)
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: packet.h:388
static int interleave_compare_dts(AVFormatContext *s, const AVPacket *next, const AVPacket *pkt)
Definition: mux.c:884
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq)
Rescale a 64-bit integer by 2 rational numbers.
Definition: mathematics.c:142
#define src
Definition: vp8dsp.c:254
#define ff_const59
The ff_const59 define is not part of the public API and will be removed without further warning...
Definition: avformat.h:544
#define AVFMT_FLAG_FLUSH_PACKETS
Flush the AVIOContext every packet.
Definition: avformat.h:1492
#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
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
AVDictionary * metadata
Metadata that applies to the whole file.
Definition: avformat.h:1591
int av_get_bits_per_sample(enum AVCodecID codec_id)
Return codec bits per sample.
Definition: utils.c:1583
uint8_t log2_chroma_h
Amount to shift the luma height right to find the chroma height.
Definition: pixdesc.h:101
void av_packet_rescale_ts(AVPacket *pkt, AVRational src_tb, AVRational dst_tb)
Convert valid timing fields (timestamps / durations) in a packet from one timebase to another...
Definition: avpacket.c:712
static int write_packet_common(AVFormatContext *s, AVStream *st, AVPacket *pkt, int interleaved)
Definition: mux.c:1113
static int validate_codec_tag(AVFormatContext *s, AVStream *st)
Definition: mux.c:196
#define AVERROR(e)
Definition: error.h:43
#define AV_PKT_FLAG_UNCODED_FRAME
Definition: mux.c:540
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:203
int(* check_bitstream)(struct AVFormatContext *, const AVPacket *pkt)
Set up any necessary bitstream filtering and extract any extra data needed for the global header...
Definition: avformat.h:635
char * url
input or output URL.
Definition: avformat.h:1447
int video_delay
Video only.
Definition: codec_par.h:155
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
void av_dict_free(AVDictionary **pm)
Free all the memory allocated for an AVDictionary struct and all keys and values. ...
Definition: dict.c:203
#define av_fourcc2str(fourcc)
Definition: avutil.h:348
enum AVMediaType codec_type
General type of the encoded data.
Definition: codec_par.h:56
AVBufferRef * buf
A reference to the reference-counted buffer where the packet data is stored.
Definition: packet.h:338
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:237
int side_data_elems
Definition: packet.h:367
AVBufferRef * av_buffer_create(uint8_t *data, int size, void(*free)(void *opaque, uint8_t *data), void *opaque, int flags)
Create an AVBuffer from an existing array.
Definition: buffer.c:29
int ff_is_intra_only(enum AVCodecID id)
Definition: utils.c:1017
static const uint8_t offset[127][2]
Definition: vf_spp.c:93
#define FFMAX(a, b)
Definition: common.h:94
int64_t val
Definition: internal.h:60
size_t av_strlcpy(char *dst, const char *src, size_t size)
Copy the string src to dst, but no more than size - 1 bytes, and null-terminate dst.
Definition: avstring.c:83
#define fail()
Definition: checkasm.h:123
int flags
A combination of AV_PKT_FLAG values.
Definition: packet.h:361
int av_compare_ts(int64_t ts_a, AVRational tb_a, int64_t ts_b, AVRational tb_b)
Compare two timestamps each in its own time base.
Definition: mathematics.c:147
int props
Codec properties, a combination of AV_CODEC_PROP_* flags.
Definition: codec_desc.h:54
static int write_packet(AVFormatContext *s, AVPacket *pkt)
Shift timestamps and call muxer; the original pts/dts are not kept.
Definition: mux.c:663
int streams_initialized
Whether or not avformat_init_output fully initialized streams.
Definition: internal.h:134
common internal API header
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
Definition: avformat.h:1407
#define LIBAVFORMAT_IDENT
Definition: version.h:46
int block_align
Audio only.
Definition: codec_par.h:177
int av_packet_copy_props(AVPacket *dst, const AVPacket *src)
Copy only "properties" fields from src to dst.
Definition: avpacket.c:571
This is any, unlabelled data.
Definition: avio.h:135
#define AV_CODEC_FLAG_BITEXACT
Use only bitexact stuff (except (I)DCT).
Definition: avcodec.h:333
int(* write_header)(struct AVFormatContext *)
Definition: avformat.h:552
#define av_assert1(cond)
assert() equivalent, that does not lie in speed critical code.
Definition: avassert.h:53
int64_t av_rescale(int64_t a, int64_t b, int64_t c)
Rescale a 64-bit integer with rounding to nearest.
Definition: mathematics.c:129
int64_t shortest_end
Timestamp of the end of the shortest stream.
Definition: internal.h:124
#define AV_TIME_BASE
Internal time base represented as integer.
Definition: avutil.h:254
int avformat_write_header(AVFormatContext *s, AVDictionary **options)
Allocate the stream private data and write the stream header to an output media file.
Definition: mux.c:505
int(* write_uncoded_frame)(struct AVFormatContext *, int stream_index, AVFrame **frame, unsigned flags)
Write an uncoded AVFrame.
Definition: avformat.h:593
#define AV_OPT_SEARCH_CHILDREN
Search in possible children of the given object first.
Definition: opt.h:558
AVRational time_base_out
The timebase used for the timestamps of the output packets.
Definition: bsf.h:95
int av_packet_make_refcounted(AVPacket *pkt)
Ensure the data described by a given packet is reference counted.
Definition: avpacket.c:671
ITU-R 601, SMPTE 274M 296M S314M(DV 4:1:1), mpeg2 4:2:2.
Definition: pixfmt.h:558
#define av_err2str(errnum)
Convenience macro, the return value should be used only directly in function arguments but never stan...
Definition: error.h:119
#define s(width, name)
Definition: cbs_vp9.c:257
int avoid_negative_ts
Avoid negative timestamps during muxing.
Definition: avformat.h:1682
static void frac_init(FFFrac *f, int64_t val, int64_t num, int64_t den)
f = val + (num / den) + 0.5.
Definition: mux.c:51
#define AV_EF_EXPLODE
abort decoding on minor error detection
Definition: avcodec.h:1666
Usually treated as AVMEDIA_TYPE_DATA.
Definition: avutil.h:200
static int init_muxer(AVFormatContext *s, AVDictionary **options)
Definition: mux.c:230
Opaque data information usually sparse.
Definition: avutil.h:205
int64_t num
Definition: internal.h:60
const AVClass * priv_class
AVClass for the private context.
Definition: avformat.h:528
int avformat_init_output(AVFormatContext *s, AVDictionary **options)
Allocate the stream private data and initialize the codec, but do not write the header.
Definition: mux.c:485
int av_opt_set_dict2(void *obj, AVDictionary **options, int search_flags)
Set all the options from a given dictionary on an object.
Definition: opt.c:1630
preferred ID for MPEG-1/2 video decoding
Definition: codec_id.h:51
#define AV_DISPOSITION_ATTACHED_PIC
The stream is stored in the file as an attached picture/"cover art" (e.g.
Definition: avformat.h:844
ff_const59 struct AVOutputFormat * oformat
The output container format.
Definition: avformat.h:1370
static void comp(unsigned char *dst, ptrdiff_t dst_stride, unsigned char *src, ptrdiff_t src_stride, int add)
Definition: eamad.c:83
Stream structure.
Definition: avformat.h:876
#define AVFMT_NOTIMESTAMPS
Format does not need / have any timestamps.
Definition: avformat.h:462
int ff_interleaved_peek(AVFormatContext *s, int stream, AVPacket *pkt, int add_offset)
Find the next packet in the interleaving queue for the given stream.
Definition: mux.c:1032
#define FF_FDEBUG_TS
Definition: avformat.h:1635
int frame_size
Definition: mxfenc.c:2137
int av_bsf_send_packet(AVBSFContext *ctx, AVPacket *pkt)
Submit a packet for filtering.
Definition: bsf.c:197
char * av_strdup(const char *s)
Duplicate a string.
Definition: mem.c:253
static int write_packets_from_bsfs(AVFormatContext *s, AVStream *st, AVPacket *pkt, int interleaved)
Definition: mux.c:1135
AVStreamInternal * internal
An opaque field for libavformat internal usage.
Definition: avformat.h:1231
int64_t pkt_duration
duration of the corresponding packet, expressed in AVStream->time_base units, 0 if unknown...
Definition: frame.h:579
int debug
Flags to enable debugging.
Definition: avformat.h:1634
#define AV_TIME_BASE_Q
Internal time base represented as fractional value.
Definition: avutil.h:260
int av_opt_set_dict(void *obj, AVDictionary **options)
Set all the options from a given dictionary on an object.
Definition: opt.c:1655
AVIOContext * pb
I/O context.
Definition: avformat.h:1393
const struct AVCodecTag *const * codec_tag
List of supported codec_id-codec_tag pairs, ordered by "better choice first".
Definition: avformat.h:525
int64_t den
Definition: internal.h:60
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
Definition: avpacket.c:605
long long int64_t
Definition: coverity.c:34
int av_bsf_receive_packet(AVBSFContext *ctx, AVPacket *pkt)
Retrieve a filtered packet.
Definition: bsf.c:223
static av_always_inline void RENAME() interleave(TYPE *dst, TYPE *src0, TYPE *src1, int w2, int add, int shift)
int(* write_trailer)(struct AVFormatContext *)
Definition: avformat.h:561
int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
Set the given entry in *pm, overwriting an existing entry.
Definition: dict.c:70
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 nb_interleaved_streams
Number of streams relevant for interleaving.
Definition: internal.h:69
Describe the class of an AVClass context structure.
Definition: log.h:67
int initialized
Whether or not avformat_init_output has already been called.
Definition: internal.h:129
#define FF_COMPLIANCE_NORMAL
Definition: avcodec.h:1592
unsigned int avpriv_toupper4(unsigned int x)
Definition: utils.c:1886
ff_const59 AVOutputFormat * av_guess_format(const char *short_name, const char *filename, const char *mime_type)
Return the output format in the list of registered output formats which best matches the provided par...
Definition: format.c:51
int ff_interleave_add_packet(AVFormatContext *s, AVPacket *pkt, int(*compare)(AVFormatContext *, const AVPacket *, const AVPacket *))
Add packet to an AVFormatContext&#39;s packet_buffer list, determining its interleaved position using com...
Definition: mux.c:812
Rational number (pair of numerator and denominator).
Definition: rational.h:58
#define AV_DISPOSITION_TIMED_THUMBNAILS
The stream is sparse, and contains thumbnail images, often corresponding to chapter markers...
Definition: avformat.h:849
int avcodec_parameters_from_context(AVCodecParameters *par, const AVCodecContext *codec)
Fill the parameters struct based on the values from the supplied codec context.
Definition: utils.c:2136
void(* get_output_timestamp)(struct AVFormatContext *s, int stream, int64_t *dts, int64_t *wall)
Definition: avformat.h:577
void avio_flush(AVIOContext *s)
Force flushing of buffered data.
Definition: aviobuf.c:233
enum AVChromaLocation ff_choose_chroma_location(AVFormatContext *s, AVStream *st)
Chooses a timebase for muxing the specified stream.
Definition: mux.c:105
AVRational ff_choose_timebase(AVFormatContext *s, AVStream *st, int min_precision)
Chooses a timebase for muxing the specified stream.
Definition: mux.c:89
#define AVFMT_AVOID_NEG_TS_AUTO
Enabled when required by target format.
Definition: avformat.h:1683
void avformat_free_context(AVFormatContext *s)
Free an AVFormatContext and all its streams.
Definition: utils.c:4455
#define AVFMT_FLAG_AUTO_BSF
Add bitstream filters as requested by the muxer.
Definition: avformat.h:1510
int error
contains the error code or 0 if no error happened
Definition: avio.h:245
int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
Return audio frame duration.
Definition: utils.c:1808
This struct describes the properties of a single codec described by an AVCodecID. ...
Definition: codec_desc.h:38
unsigned int tag
Definition: internal.h:44
AVRational offset_timebase
Timebase for the timestamp offset.
Definition: internal.h:111
int sample_rate
Audio only.
Definition: codec_par.h:170
int64_t interleaver_chunk_duration
Definition: avformat.h:1125
#define AVFMT_AVOID_NEG_TS_MAKE_ZERO
Shift timestamps so that they start at 0.
Definition: avformat.h:1685
static int av_cmp_q(AVRational a, AVRational b)
Compare two rationals.
Definition: rational.h:89
Main libavformat public API header.
AVPacketSideData * side_data
Additional packet data that can be provided by the container.
Definition: packet.h:366
void av_opt_free(void *obj)
Free all allocated objects in obj.
Definition: opt.c:1610
const OptionDef options[]
Definition: ffmpeg_opt.c:3388
#define FF_DISABLE_DEPRECATION_WARNINGS
Definition: internal.h:84
int av_interleaved_write_uncoded_frame(AVFormatContext *s, int stream_index, AVFrame *frame)
Write an uncoded frame to an output media file.
Definition: mux.c:1382
common internal api header.
struct AVPacketList * next
Definition: avformat.h:2026
if(ret< 0)
Definition: vf_mcdeint.c:279
#define AVFMT_NOFILE
Demuxer will use avio_open, no opened file should be provided by the caller.
Definition: avformat.h:458
#define AVFMT_NOSTREAMS
Format does not require any streams.
Definition: avformat.h:467
int max_chunk_size
Max chunk size in bytes Note, not all formats support this and unpredictable things may happen if it ...
Definition: avformat.h:1715
int error_recognition
Error recognition; higher values will detect more errors but may misdetect some more or less valid pa...
Definition: avformat.h:1618
int disposition
AV_DISPOSITION_* bit field.
Definition: avformat.h:929
AVBufferRef * av_buffer_ref(AVBufferRef *buf)
Create a new reference to an AVBuffer.
Definition: buffer.c:93
static void frac_add(FFFrac *f, int64_t incr)
Fractional addition to f: f = f + (incr / f->den).
Definition: mux.c:69
static int init_pts(AVFormatContext *s)
Definition: mux.c:422
void av_init_packet(AVPacket *pkt)
Initialize optional fields of a packet with default values.
Definition: avpacket.c:35
int64_t nb_frames
number of frames in this stream if known or 0
Definition: avformat.h:927
char * key
Definition: dict.h:86
int den
Denominator.
Definition: rational.h:60
int av_write_uncoded_frame(AVFormatContext *s, int stream_index, AVFrame *frame)
Write an uncoded frame to an output media file.
Definition: mux.c:1376
#define AV_INPUT_BUFFER_PADDING_SIZE
Required number of additionally allocated bytes at the end of the input bitstream for decoding...
Definition: avcodec.h:215
int64_t mux_ts_offset
Timestamp offset added to timestamps before muxing.
Definition: avformat.h:1178
static int interleaved_write_packet(AVFormatContext *s, AVPacket *pkt, int flush)
Definition: mux.c:1094
#define AVFMT_AVOID_NEG_TS_MAKE_NON_NEGATIVE
Shift timestamps so they are non negative.
Definition: avformat.h:1684
struct AVPacketList * packet_buffer_end
Definition: internal.h:77
#define av_free(p)
#define FF_ENABLE_DEPRECATION_WARNINGS
Definition: internal.h:85
#define av_ts2str(ts)
Convenience macro, the return value should be used only directly in function arguments but never stan...
Definition: timestamp.h:54
int max_chunk_duration
Max chunk time in microseconds.
Definition: avformat.h:1707
void * priv_data
Format private data.
Definition: avformat.h:1379
void(* deinit)(struct AVFormatContext *)
Deinitialize format.
Definition: avformat.h:629
#define AVFMT_NODIMENSIONS
Format does not need width/height.
Definition: avformat.h:466
static int check_bitstream(AVFormatContext *s, AVStream *st, AVPacket *pkt)
Definition: mux.c:1075
const AVCodecDescriptor * avcodec_descriptor_get(enum AVCodecID id)
Definition: codec_desc.c:3394
int(* write_packet)(struct AVFormatContext *, AVPacket *pkt)
Write a packet.
Definition: avformat.h:560
int channels
Audio only.
Definition: codec_par.h:166
AVCodecContext * avctx
The codec context used by avformat_find_stream_info, the parser, etc.
Definition: internal.h:169
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed...
Definition: packet.h:354
int av_write_trailer(AVFormatContext *s)
Write the stream trailer to an output media file and free the file private data.
Definition: mux.c:1251
FILE * out
Definition: movenc.c:54
#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
AVChromaLocation
Location of chroma samples.
Definition: pixfmt.h:554
MPEG-1 4:2:0, JPEG 4:2:0, H.263 4:2:0.
Definition: pixfmt.h:557
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:1023
int64_t av_rescale_q_rnd(int64_t a, AVRational bq, AVRational cq, enum AVRounding rnd)
Rescale a 64-bit integer by 2 rational numbers with specified rounding.
Definition: mathematics.c:134
uint32_t codec_tag
Additional information about the codec (corresponds to the AVI FOURCC).
Definition: codec_par.h:64
#define FFSWAP(type, a, b)
Definition: common.h:99
int stream_index
Definition: packet.h:357
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
Definition: avformat.h:905
#define MKTAG(a, b, c, d)
Definition: common.h:406
unsigned int av_codec_get_tag(const struct AVCodecTag *const *tags, enum AVCodecID id)
Get the codec tag for the given codec id id.
#define AVFMT_TS_NEGATIVE
Format allows muxing negative timestamps.
Definition: avformat.h:477
static double val(void *priv, double ch)
Definition: aeval.c:76
This structure stores compressed data.
Definition: packet.h:332
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: packet.h:348
struct AVPacketList * last_in_packet_buffer
last packet in packet_buffer for this stream when muxing.
Definition: avformat.h:1100
Header data; this needs to be present for the stream to be decodeable.
Definition: avio.h:115
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
#define AVFMT_FLAG_SHORTEST
Stop muxing when the shortest stream stops.
Definition: avformat.h:1509
static uint8_t tmp[11]
Definition: aes_ctr.c:26