FFmpeg  4.4.6
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"
26 #include "libavutil/opt.h"
27 #include "libavutil/dict.h"
28 #include "libavutil/pixdesc.h"
29 #include "libavutil/timestamp.h"
30 #include "libavutil/avassert.h"
31 #include "libavutil/avstring.h"
32 #include "libavutil/internal.h"
33 #include "libavutil/mathematics.h"
34 
35 /**
36  * @file
37  * muxing functions for use within libavformat
38  */
39 
40 /* fraction handling */
41 
42 /**
43  * f = val + (num / den) + 0.5.
44  *
45  * 'num' is normalized so that it is such as 0 <= num < den.
46  *
47  * @param f fractional number
48  * @param val integer value
49  * @param num must be >= 0
50  * @param den must be >= 1
51  */
52 static void frac_init(FFFrac *f, int64_t val, int64_t num, int64_t den)
53 {
54  num += (den >> 1);
55  if (num >= den) {
56  val += num / den;
57  num = num % den;
58  }
59  f->val = val;
60  f->num = num;
61  f->den = den;
62 }
63 
64 /**
65  * Fractional addition to f: f = f + (incr / f->den).
66  *
67  * @param f fractional number
68  * @param incr increment, can be positive or negative
69  */
70 static void frac_add(FFFrac *f, int64_t incr)
71 {
72  int64_t num, den;
73 
74  num = f->num + incr;
75  den = f->den;
76  if (num < 0) {
77  f->val += num / den;
78  num = num % den;
79  if (num < 0) {
80  num += den;
81  f->val--;
82  }
83  } else if (num >= den) {
84  f->val += num / den;
85  num = num % den;
86  }
87  f->num = num;
88 }
89 
91 {
92  AVRational q;
93  int j;
94 
95  q = st->time_base;
96 
97  for (j=2; j<14; j+= 1+(j>2))
98  while (q.den / q.num < min_precision && q.num % j == 0)
99  q.num /= j;
100  while (q.den / q.num < min_precision && q.den < (1<<24))
101  q.den <<= 1;
102 
103  return q;
104 }
105 
107 {
108  AVCodecParameters *par = st->codecpar;
109  const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(par->format);
110 
112  return par->chroma_location;
113 
114  if (pix_desc) {
115  if (pix_desc->log2_chroma_h == 0) {
116  return AVCHROMA_LOC_TOPLEFT;
117  } else if (pix_desc->log2_chroma_w == 1 && pix_desc->log2_chroma_h == 1) {
119  switch (par->codec_id) {
120  case AV_CODEC_ID_MJPEG:
122  }
123  }
125  switch (par->codec_id) {
127  }
128  }
129  }
130  }
131 
133 
134 }
135 
137  const char *format, const char *filename)
138 {
140  int ret = 0;
141 
142  *avctx = NULL;
143  if (!s)
144  goto nomem;
145 
146  if (!oformat) {
147  if (format) {
148  oformat = av_guess_format(format, NULL, NULL);
149  if (!oformat) {
150  av_log(s, AV_LOG_ERROR, "Requested output format '%s' is not a suitable output format\n", format);
151  ret = AVERROR(EINVAL);
152  goto error;
153  }
154  } else {
155  oformat = av_guess_format(NULL, filename, NULL);
156  if (!oformat) {
157  ret = AVERROR(EINVAL);
158  av_log(s, AV_LOG_ERROR, "Unable to find a suitable output format for '%s'\n",
159  filename);
160  goto error;
161  }
162  }
163  }
164 
165  s->oformat = oformat;
166  if (s->oformat->priv_data_size > 0) {
167  s->priv_data = av_mallocz(s->oformat->priv_data_size);
168  if (!s->priv_data)
169  goto nomem;
170  if (s->oformat->priv_class) {
171  *(const AVClass**)s->priv_data= s->oformat->priv_class;
172  av_opt_set_defaults(s->priv_data);
173  }
174  } else
175  s->priv_data = NULL;
176 
177  if (filename) {
178 #if FF_API_FORMAT_FILENAME
180  av_strlcpy(s->filename, filename, sizeof(s->filename));
182 #endif
183  if (!(s->url = av_strdup(filename)))
184  goto nomem;
185 
186  }
187  *avctx = s;
188  return 0;
189 nomem:
190  av_log(s, AV_LOG_ERROR, "Out of memory\n");
191  ret = AVERROR(ENOMEM);
192 error:
194  return ret;
195 }
196 
198 {
199  const AVCodecTag *avctag;
200  int n;
201  enum AVCodecID id = AV_CODEC_ID_NONE;
202  int64_t tag = -1;
203 
204  /**
205  * Check that tag + id is in the table
206  * If neither is in the table -> OK
207  * If tag is in the table with another id -> FAIL
208  * If id is in the table with another tag -> FAIL unless strict < normal
209  */
210  for (n = 0; s->oformat->codec_tag[n]; n++) {
211  avctag = s->oformat->codec_tag[n];
212  while (avctag->id != AV_CODEC_ID_NONE) {
213  if (avpriv_toupper4(avctag->tag) == avpriv_toupper4(st->codecpar->codec_tag)) {
214  id = avctag->id;
215  if (id == st->codecpar->codec_id)
216  return 1;
217  }
218  if (avctag->id == st->codecpar->codec_id)
219  tag = avctag->tag;
220  avctag++;
221  }
222  }
223  if (id != AV_CODEC_ID_NONE)
224  return 0;
225  if (tag >= 0 && (s->strict_std_compliance >= FF_COMPLIANCE_NORMAL))
226  return 0;
227  return 1;
228 }
229 
230 
232 {
233  int ret = 0, i;
234  AVStream *st;
235  AVDictionary *tmp = NULL;
236  AVCodecParameters *par = NULL;
237  const AVOutputFormat *of = s->oformat;
238  const AVCodecDescriptor *desc;
240 
241  if (options)
242  av_dict_copy(&tmp, *options, 0);
243 
244  if ((ret = av_opt_set_dict(s, &tmp)) < 0)
245  goto fail;
246  if (s->priv_data && s->oformat->priv_class && *(const AVClass**)s->priv_data==s->oformat->priv_class &&
247  (ret = av_opt_set_dict2(s->priv_data, &tmp, AV_OPT_SEARCH_CHILDREN)) < 0)
248  goto fail;
249 
250 #if FF_API_FORMAT_FILENAME
252  if (!s->url && !(s->url = av_strdup(s->filename))) {
254 #else
255  if (!s->url && !(s->url = av_strdup(""))) {
256 #endif
257  ret = AVERROR(ENOMEM);
258  goto fail;
259  }
260 
261 #if FF_API_LAVF_AVCTX
263  if (s->nb_streams && s->streams[0]->codec->flags & AV_CODEC_FLAG_BITEXACT) {
264  if (!(s->flags & AVFMT_FLAG_BITEXACT)) {
266  "The AVFormatContext is not in set to bitexact mode, only "
267  "the AVCodecContext. If this is not intended, set "
268  "AVFormatContext.flags |= AVFMT_FLAG_BITEXACT.\n");
269  }
270  }
272 #endif
273 
274  // some sanity checks
275  if (s->nb_streams == 0 && !(of->flags & AVFMT_NOSTREAMS)) {
276  av_log(s, AV_LOG_ERROR, "No streams to mux were specified\n");
277  ret = AVERROR(EINVAL);
278  goto fail;
279  }
280 
281  for (i = 0; i < s->nb_streams; i++) {
282  st = s->streams[i];
283  par = st->codecpar;
284 
285 #if FF_API_LAVF_AVCTX
289  av_log(s, AV_LOG_WARNING, "Using AVStream.codec to pass codec "
290  "parameters to muxers is deprecated, use AVStream.codecpar "
291  "instead.\n");
293  if (ret < 0)
294  goto fail;
295  }
297 #endif
298 
299  if (!st->time_base.num) {
300  /* fall back on the default timebase values */
301  if (par->codec_type == AVMEDIA_TYPE_AUDIO && par->sample_rate)
302  avpriv_set_pts_info(st, 64, 1, par->sample_rate);
303  else
304  avpriv_set_pts_info(st, 33, 1, 90000);
305  }
306 
307  switch (par->codec_type) {
308  case AVMEDIA_TYPE_AUDIO:
309  if (par->sample_rate <= 0) {
310  av_log(s, AV_LOG_ERROR, "sample rate not set\n");
311  ret = AVERROR(EINVAL);
312  goto fail;
313  }
314  if (!par->block_align)
315  par->block_align = par->channels *
316  av_get_bits_per_sample(par->codec_id) >> 3;
317  break;
318  case AVMEDIA_TYPE_VIDEO:
319  if ((par->width <= 0 || par->height <= 0) &&
320  !(of->flags & AVFMT_NODIMENSIONS)) {
321  av_log(s, AV_LOG_ERROR, "dimensions not set\n");
322  ret = AVERROR(EINVAL);
323  goto fail;
324  }
327  ) {
328  if (st->sample_aspect_ratio.num != 0 &&
329  st->sample_aspect_ratio.den != 0 &&
330  par->sample_aspect_ratio.num != 0 &&
331  par->sample_aspect_ratio.den != 0) {
332  av_log(s, AV_LOG_ERROR, "Aspect ratio mismatch between muxer "
333  "(%d/%d) and encoder layer (%d/%d)\n",
336  par->sample_aspect_ratio.den);
337  ret = AVERROR(EINVAL);
338  goto fail;
339  }
340  }
341  break;
342  }
343 
345  if (desc && desc->props & AV_CODEC_PROP_REORDER)
346  st->internal->reorder = 1;
347 
349 
350  if (of->codec_tag) {
351  if ( par->codec_tag
352  && par->codec_id == AV_CODEC_ID_RAWVIDEO
353  && ( av_codec_get_tag(of->codec_tag, par->codec_id) == 0
354  || av_codec_get_tag(of->codec_tag, par->codec_id) == MKTAG('r', 'a', 'w', ' '))
355  && !validate_codec_tag(s, st)) {
356  // the current rawvideo encoding system ends up setting
357  // the wrong codec_tag for avi/mov, we override it here
358  par->codec_tag = 0;
359  }
360  if (par->codec_tag) {
361  if (!validate_codec_tag(s, st)) {
362  const uint32_t otag = av_codec_get_tag(s->oformat->codec_tag, par->codec_id);
364  "Tag %s incompatible with output codec id '%d' (%s)\n",
365  av_fourcc2str(par->codec_tag), par->codec_id, av_fourcc2str(otag));
366  ret = AVERROR_INVALIDDATA;
367  goto fail;
368  }
369  } else
370  par->codec_tag = av_codec_get_tag(of->codec_tag, par->codec_id);
371  }
372 
374  s->internal->nb_interleaved_streams++;
375  }
376 
377  if (!s->priv_data && of->priv_data_size > 0) {
378  s->priv_data = av_mallocz(of->priv_data_size);
379  if (!s->priv_data) {
380  ret = AVERROR(ENOMEM);
381  goto fail;
382  }
383  if (of->priv_class) {
384  *(const AVClass **)s->priv_data = of->priv_class;
385  av_opt_set_defaults(s->priv_data);
386  if ((ret = av_opt_set_dict2(s->priv_data, &tmp, AV_OPT_SEARCH_CHILDREN)) < 0)
387  goto fail;
388  }
389  }
390 
391  /* set muxer identification string */
392  if (!(s->flags & AVFMT_FLAG_BITEXACT)) {
393  av_dict_set(&s->metadata, "encoder", LIBAVFORMAT_IDENT, 0);
394  } else {
395  av_dict_set(&s->metadata, "encoder", NULL, 0);
396  }
397 
398  for (e = NULL; e = av_dict_get(s->metadata, "encoder-", e, AV_DICT_IGNORE_SUFFIX); ) {
399  av_dict_set(&s->metadata, e->key, NULL, 0);
400  }
401 
402  if (options) {
404  *options = tmp;
405  }
406 
407  if (s->oformat->init) {
408  if ((ret = s->oformat->init(s)) < 0) {
409  if (s->oformat->deinit)
410  s->oformat->deinit(s);
411  return ret;
412  }
413  return ret == 0;
414  }
415 
416  return 0;
417 
418 fail:
419  av_dict_free(&tmp);
420  return ret;
421 }
422 
424 {
425  int i;
426  AVStream *st;
427 
428  /* init PTS generation */
429  for (i = 0; i < s->nb_streams; i++) {
430  int64_t den = AV_NOPTS_VALUE;
431  st = s->streams[i];
432 
433  switch (st->codecpar->codec_type) {
434  case AVMEDIA_TYPE_AUDIO:
435  den = (int64_t)st->time_base.num * st->codecpar->sample_rate;
436  break;
437  case AVMEDIA_TYPE_VIDEO:
438  den = (int64_t)st->time_base.num * st->time_base.den;
439  break;
440  default:
441  break;
442  }
443 
444  if (!st->internal->priv_pts)
445  st->internal->priv_pts = av_mallocz(sizeof(*st->internal->priv_pts));
446  if (!st->internal->priv_pts)
447  return AVERROR(ENOMEM);
448 
449  if (den != AV_NOPTS_VALUE) {
450  if (den <= 0)
451  return AVERROR_INVALIDDATA;
452 
453  frac_init(st->internal->priv_pts, 0, 0, den);
454  }
455  }
456 
457  if (s->avoid_negative_ts < 0) {
458  av_assert2(s->avoid_negative_ts == AVFMT_AVOID_NEG_TS_AUTO);
459  if (s->oformat->flags & (AVFMT_TS_NEGATIVE | AVFMT_NOTIMESTAMPS)) {
460  s->avoid_negative_ts = 0;
461  } else
462  s->avoid_negative_ts = AVFMT_AVOID_NEG_TS_MAKE_NON_NEGATIVE;
463  }
464 
465  return 0;
466 }
467 
469 {
470  if (s->pb && s->pb->error >= 0) {
471  if (s->flush_packets == 1 || s->flags & AVFMT_FLAG_FLUSH_PACKETS)
472  avio_flush(s->pb);
473  else if (s->flush_packets && !(s->oformat->flags & AVFMT_NOFILE))
475  }
476 }
477 
479 {
480  if (s->oformat && s->oformat->deinit && s->internal->initialized)
481  s->oformat->deinit(s);
482  s->internal->initialized =
483  s->internal->streams_initialized = 0;
484 }
485 
487 {
488  int ret = 0;
489 
490  if ((ret = init_muxer(s, options)) < 0)
491  return ret;
492 
493  s->internal->initialized = 1;
494  s->internal->streams_initialized = ret;
495 
496  if (s->oformat->init && ret) {
497  if ((ret = init_pts(s)) < 0)
498  return ret;
499 
501  }
502 
504 }
505 
507 {
508  int ret = 0;
509  int already_initialized = s->internal->initialized;
510  int streams_already_initialized = s->internal->streams_initialized;
511 
512  if (!already_initialized)
513  if ((ret = avformat_init_output(s, options)) < 0)
514  return ret;
515 
516  if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
518  if (s->oformat->write_header) {
519  ret = s->oformat->write_header(s);
520  if (ret >= 0 && s->pb && s->pb->error < 0)
521  ret = s->pb->error;
522  if (ret < 0)
523  goto fail;
525  }
526  if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
528 
529  if (!s->internal->streams_initialized) {
530  if ((ret = init_pts(s)) < 0)
531  goto fail;
532  }
533 
534  return streams_already_initialized;
535 
536 fail:
537  deinit_muxer(s);
538  return ret;
539 }
540 
541 #define AV_PKT_FLAG_UNCODED_FRAME 0x2000
542 
543 
544 #if FF_API_COMPUTE_PKT_FIELDS2 && FF_API_LAVF_AVCTX
546 //FIXME merge with compute_pkt_fields
548 {
549  int delay = FFMAX(st->codecpar->video_delay, st->internal->avctx->max_b_frames > 0);
550  int i;
551  int frame_size;
552 
553  if (!s->internal->missing_ts_warning &&
554  !(s->oformat->flags & AVFMT_NOTIMESTAMPS) &&
556  (pkt->pts == AV_NOPTS_VALUE || pkt->dts == AV_NOPTS_VALUE)) {
558  "Timestamps are unset in a packet for stream %d. "
559  "This is deprecated and will stop working in the future. "
560  "Fix your code to set the timestamps properly\n", st->index);
561  s->internal->missing_ts_warning = 1;
562  }
563 
564  if (s->debug & FF_FDEBUG_TS)
565  av_log(s, AV_LOG_DEBUG, "compute_muxer_pkt_fields: pts:%s dts:%s cur_dts:%s b:%d size:%d st:%d\n",
567 
568  if (pkt->pts == AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE && delay == 0)
569  pkt->pts = pkt->dts;
570 
571  //XXX/FIXME this is a temporary hack until all encoders output pts
572  if ((pkt->pts == 0 || pkt->pts == AV_NOPTS_VALUE) && pkt->dts == AV_NOPTS_VALUE && !delay) {
573  static int warned;
574  if (!warned) {
575  av_log(s, AV_LOG_WARNING, "Encoder did not produce proper pts, making some up.\n");
576  warned = 1;
577  }
578  pkt->dts =
579 // pkt->pts= st->cur_dts;
580  pkt->pts = st->internal->priv_pts->val;
581  }
582 
583  //calculate dts from pts
584  if (pkt->pts != AV_NOPTS_VALUE && pkt->dts == AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY) {
585  st->internal->pts_buffer[0] = pkt->pts;
586  for (i = 1; i < delay + 1 && st->internal->pts_buffer[i] == AV_NOPTS_VALUE; i++)
587  st->internal->pts_buffer[i] = pkt->pts + (i - delay - 1) * pkt->duration;
588  for (i = 0; i<delay && st->internal->pts_buffer[i] > st->internal->pts_buffer[i + 1]; i++)
589  FFSWAP(int64_t, st->internal->pts_buffer[i], st->internal->pts_buffer[i + 1]);
590 
591  pkt->dts = st->internal->pts_buffer[0];
592  }
593 
594  if (st->cur_dts && st->cur_dts != AV_NOPTS_VALUE &&
595  ((!(s->oformat->flags & AVFMT_TS_NONSTRICT) &&
598  st->cur_dts >= pkt->dts) || st->cur_dts > pkt->dts)) {
600  "Application provided invalid, non monotonically increasing dts to muxer in stream %d: %s >= %s\n",
601  st->index, av_ts2str(st->cur_dts), av_ts2str(pkt->dts));
602  return AVERROR(EINVAL);
603  }
604  if (pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts < pkt->dts) {
606  "pts (%s) < dts (%s) in stream %d\n",
608  st->index);
609  return AVERROR(EINVAL);
610  }
611 
612  if (s->debug & FF_FDEBUG_TS)
613  av_log(s, AV_LOG_DEBUG, "av_write_frame: pts2:%s dts2:%s\n",
615 
616  st->cur_dts = pkt->dts;
617  st->internal->priv_pts->val = pkt->dts;
618 
619  /* update pts */
620  switch (st->codecpar->codec_type) {
621  case AVMEDIA_TYPE_AUDIO:
623  (*(AVFrame **)pkt->data)->nb_samples :
625 
626  /* HACK/FIXME, we skip the initial 0 size packets as they are most
627  * likely equal to the encoder delay, but it would be better if we
628  * had the real timestamps from the encoder */
629  if (frame_size >= 0 && (pkt->size || st->internal->priv_pts->num != st->internal->priv_pts->den >> 1 || st->internal->priv_pts->val)) {
631  }
632  break;
633  case AVMEDIA_TYPE_VIDEO:
635  break;
636  }
637  return 0;
638 }
640 #endif
641 
643 {
644  if (pkt->duration < 0 && st->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE) {
645  av_log(s, AV_LOG_WARNING, "Packet with invalid duration %"PRId64" in stream %d\n",
647  pkt->duration = 0;
648  }
649 
650  if (pkt->duration)
651  return;
652 
653  switch (st->codecpar->codec_type) {
654  case AVMEDIA_TYPE_VIDEO:
655  if (st->avg_frame_rate.num > 0 && st->avg_frame_rate.den > 0) {
657  st->time_base);
658  } else if (st->time_base.num * 1000LL > st->time_base.den)
659  pkt->duration = 1;
660  break;
661  case AVMEDIA_TYPE_AUDIO: {
663  if (frame_size && st->codecpar->sample_rate) {
665  (AVRational){1, st->codecpar->sample_rate},
666  st->time_base);
667  }
668  break;
669  }
670  }
671 }
672 
673 /**
674  * Shift timestamps and call muxer; the original pts/dts are not kept.
675  *
676  * FIXME: this function should NEVER get undefined pts/dts beside when the
677  * AVFMT_NOTIMESTAMPS is set.
678  * Those additional safety checks should be dropped once the correct checks
679  * are set in the callers.
680  */
682 {
683  int ret;
684 
685  // If the timestamp offsetting below is adjusted, adjust
686  // ff_interleaved_peek similarly.
687  if (s->output_ts_offset) {
688  AVStream *st = s->streams[pkt->stream_index];
689  int64_t offset = av_rescale_q(s->output_ts_offset, AV_TIME_BASE_Q, st->time_base);
690 
691  if (pkt->dts != AV_NOPTS_VALUE)
692  pkt->dts += offset;
693  if (pkt->pts != AV_NOPTS_VALUE)
694  pkt->pts += offset;
695  }
696 
697  if (s->avoid_negative_ts > 0) {
698  AVStream *st = s->streams[pkt->stream_index];
700  int64_t ts = s->internal->avoid_negative_ts_use_pts ? pkt->pts : pkt->dts;
701 
702  if (s->internal->offset == AV_NOPTS_VALUE && ts != AV_NOPTS_VALUE &&
703  (ts < 0 || s->avoid_negative_ts == AVFMT_AVOID_NEG_TS_MAKE_ZERO)) {
704  s->internal->offset = -ts;
705  s->internal->offset_timebase = st->time_base;
706  }
707 
708  if (s->internal->offset != AV_NOPTS_VALUE && !offset) {
709  offset = st->internal->mux_ts_offset =
710  av_rescale_q_rnd(s->internal->offset,
711  s->internal->offset_timebase,
712  st->time_base,
713  AV_ROUND_UP);
714  }
715 
716  if (pkt->dts != AV_NOPTS_VALUE)
717  pkt->dts += offset;
718  if (pkt->pts != AV_NOPTS_VALUE)
719  pkt->pts += offset;
720 
721  if (s->internal->avoid_negative_ts_use_pts) {
722  if (pkt->pts != AV_NOPTS_VALUE && pkt->pts < 0) {
723  av_log(s, AV_LOG_WARNING, "failed to avoid negative "
724  "pts %s in stream %d.\n"
725  "Try -avoid_negative_ts 1 as a possible workaround.\n",
726  av_ts2str(pkt->pts),
728  );
729  }
730  } else {
731  av_assert2(pkt->dts == AV_NOPTS_VALUE || pkt->dts >= 0 || s->max_interleave_delta > 0);
732  if (pkt->dts != AV_NOPTS_VALUE && pkt->dts < 0) {
734  "Packets poorly interleaved, failed to avoid negative "
735  "timestamp %s in stream %d.\n"
736  "Try -max_interleave_delta 0 as a possible workaround.\n",
737  av_ts2str(pkt->dts),
739  );
740  }
741  }
742  }
743 
745  AVFrame **frame = (AVFrame **)pkt->data;
746  av_assert0(pkt->size == sizeof(*frame));
747  ret = s->oformat->write_uncoded_frame(s, pkt->stream_index, frame, 0);
748  } else {
749  ret = s->oformat->write_packet(s, pkt);
750  }
751 
752  if (s->pb && ret >= 0) {
754  if (s->pb->error < 0)
755  ret = s->pb->error;
756  }
757 
758  if (ret >= 0)
759  s->streams[pkt->stream_index]->nb_frames++;
760 
761  return ret;
762 }
763 
765 {
766  if (pkt->stream_index < 0 || pkt->stream_index >= s->nb_streams) {
767  av_log(s, AV_LOG_ERROR, "Invalid packet stream index: %d\n",
768  pkt->stream_index);
769  return AVERROR(EINVAL);
770  }
771 
772  if (s->streams[pkt->stream_index]->codecpar->codec_type == AVMEDIA_TYPE_ATTACHMENT) {
773  av_log(s, AV_LOG_ERROR, "Received a packet for an attachment stream.\n");
774  return AVERROR(EINVAL);
775  }
776 
777  return 0;
778 }
779 
781 {
782 #if !FF_API_COMPUTE_PKT_FIELDS2 || !FF_API_LAVF_AVCTX
783  /* sanitize the timestamps */
784  if (!(s->oformat->flags & AVFMT_NOTIMESTAMPS)) {
785 
786  /* when there is no reordering (so dts is equal to pts), but
787  * only one of them is set, set the other as well */
788  if (!st->internal->reorder) {
789  if (pkt->pts == AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE)
790  pkt->pts = pkt->dts;
791  if (pkt->dts == AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE)
792  pkt->dts = pkt->pts;
793  }
794 
795  /* check that the timestamps are set */
796  if (pkt->pts == AV_NOPTS_VALUE || pkt->dts == AV_NOPTS_VALUE) {
798  "Timestamps are unset in a packet for stream %d\n", st->index);
799  return AVERROR(EINVAL);
800  }
801 
802  /* check that the dts are increasing (or at least non-decreasing,
803  * if the format allows it */
804  if (st->cur_dts != AV_NOPTS_VALUE &&
805  ((!(s->oformat->flags & AVFMT_TS_NONSTRICT) && st->cur_dts >= pkt->dts) ||
806  st->cur_dts > pkt->dts)) {
808  "Application provided invalid, non monotonically increasing "
809  "dts to muxer in stream %d: %" PRId64 " >= %" PRId64 "\n",
810  st->index, st->cur_dts, pkt->dts);
811  return AVERROR(EINVAL);
812  }
813 
814  if (pkt->pts < pkt->dts) {
815  av_log(s, AV_LOG_ERROR, "pts %" PRId64 " < dts %" PRId64 " in stream %d\n",
816  pkt->pts, pkt->dts, st->index);
817  return AVERROR(EINVAL);
818  }
819  }
820 #endif
821  /* update flags */
822  if (st->internal->is_intra_only)
824 
825  return 0;
826 }
827 
828 #define CHUNK_START 0x1000
829 
831  int (*compare)(AVFormatContext *, const AVPacket *, const AVPacket *))
832 {
833  int ret;
834  PacketList **next_point, *this_pktl;
835  AVStream *st = s->streams[pkt->stream_index];
836  int chunked = s->max_chunk_size || s->max_chunk_duration;
837 
838  this_pktl = av_malloc(sizeof(PacketList));
839  if (!this_pktl) {
841  return AVERROR(ENOMEM);
842  }
843  if ((ret = av_packet_make_refcounted(pkt)) < 0) {
844  av_free(this_pktl);
846  return ret;
847  }
848 
849  av_packet_move_ref(&this_pktl->pkt, pkt);
850  pkt = &this_pktl->pkt;
851 
852  if (st->internal->last_in_packet_buffer) {
853  next_point = &(st->internal->last_in_packet_buffer->next);
854  } else {
855  next_point = &s->internal->packet_buffer;
856  }
857 
858  if (chunked) {
859  uint64_t max= av_rescale_q_rnd(s->max_chunk_duration, AV_TIME_BASE_Q, st->time_base, AV_ROUND_UP);
862  if ( (s->max_chunk_size && st->internal->interleaver_chunk_size > s->max_chunk_size)
863  || (max && st->internal->interleaver_chunk_duration > max)) {
865  pkt->flags |= CHUNK_START;
866  if (max && st->internal->interleaver_chunk_duration > max) {
867  int64_t syncoffset = (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)*max/2;
868  int64_t syncto = av_rescale(pkt->dts + syncoffset, 1, max)*max - syncoffset;
869 
870  st->internal->interleaver_chunk_duration += (pkt->dts - syncto)/8 - max;
871  } else
873  }
874  }
875  if (*next_point) {
876  if (chunked && !(pkt->flags & CHUNK_START))
877  goto next_non_null;
878 
879  if (compare(s, &s->internal->packet_buffer_end->pkt, pkt)) {
880  while ( *next_point
881  && ((chunked && !((*next_point)->pkt.flags&CHUNK_START))
882  || !compare(s, &(*next_point)->pkt, pkt)))
883  next_point = &(*next_point)->next;
884  if (*next_point)
885  goto next_non_null;
886  } else {
887  next_point = &(s->internal->packet_buffer_end->next);
888  }
889  }
890  av_assert1(!*next_point);
891 
892  s->internal->packet_buffer_end = this_pktl;
893 next_non_null:
894 
895  this_pktl->next = *next_point;
896 
897  st->internal->last_in_packet_buffer = *next_point = this_pktl;
898 
899  return 0;
900 }
901 
903  const AVPacket *pkt)
904 {
905  AVStream *st = s->streams[pkt->stream_index];
906  AVStream *st2 = s->streams[next->stream_index];
907  int comp = av_compare_ts(next->dts, st2->time_base, pkt->dts,
908  st->time_base);
909  if (s->audio_preload) {
910  int preload = st ->codecpar->codec_type == AVMEDIA_TYPE_AUDIO;
911  int preload2 = st2->codecpar->codec_type == AVMEDIA_TYPE_AUDIO;
912  if (preload != preload2) {
913  int64_t ts, ts2;
914  preload *= s->audio_preload;
915  preload2 *= s->audio_preload;
916  ts = av_rescale_q(pkt ->dts, st ->time_base, AV_TIME_BASE_Q) - preload;
917  ts2= av_rescale_q(next->dts, st2->time_base, AV_TIME_BASE_Q) - preload2;
918  if (ts == ts2) {
919  ts = ((uint64_t)pkt ->dts*st ->time_base.num*AV_TIME_BASE - (uint64_t)preload *st ->time_base.den)*st2->time_base.den
920  - ((uint64_t)next->dts*st2->time_base.num*AV_TIME_BASE - (uint64_t)preload2*st2->time_base.den)*st ->time_base.den;
921  ts2 = 0;
922  }
923  comp = (ts2 > ts) - (ts2 < ts);
924  }
925  }
926 
927  if (comp == 0)
928  return pkt->stream_index < next->stream_index;
929  return comp > 0;
930 }
931 
933  AVPacket *pkt, int flush)
934 {
935  PacketList *pktl;
936  int stream_count = 0;
937  int noninterleaved_count = 0;
938  int i, ret;
939  int eof = flush;
940 
941  if (pkt) {
943  return ret;
944  }
945 
946  for (i = 0; i < s->nb_streams; i++) {
947  if (s->streams[i]->internal->last_in_packet_buffer) {
948  ++stream_count;
949  } else if (s->streams[i]->codecpar->codec_type != AVMEDIA_TYPE_ATTACHMENT &&
950  s->streams[i]->codecpar->codec_id != AV_CODEC_ID_VP8 &&
951  s->streams[i]->codecpar->codec_id != AV_CODEC_ID_VP9) {
952  ++noninterleaved_count;
953  }
954  }
955 
956  if (s->internal->nb_interleaved_streams == stream_count)
957  flush = 1;
958 
959  if (s->max_interleave_delta > 0 &&
960  s->internal->packet_buffer &&
961  !flush &&
962  s->internal->nb_interleaved_streams == stream_count+noninterleaved_count
963  ) {
964  AVPacket *top_pkt = &s->internal->packet_buffer->pkt;
965  int64_t delta_dts = INT64_MIN;
966  int64_t top_dts = av_rescale_q(top_pkt->dts,
967  s->streams[top_pkt->stream_index]->time_base,
969 
970  for (i = 0; i < s->nb_streams; i++) {
971  int64_t last_dts;
972  const PacketList *last = s->streams[i]->internal->last_in_packet_buffer;
973 
974  if (!last)
975  continue;
976 
977  last_dts = av_rescale_q(last->pkt.dts,
978  s->streams[i]->time_base,
980  delta_dts = FFMAX(delta_dts, last_dts - top_dts);
981  }
982 
983  if (delta_dts > s->max_interleave_delta) {
985  "Delay between the first packet and last packet in the "
986  "muxing queue is %"PRId64" > %"PRId64": forcing output\n",
987  delta_dts, s->max_interleave_delta);
988  flush = 1;
989  }
990  }
991 
992  if (s->internal->packet_buffer &&
993  eof &&
994  (s->flags & AVFMT_FLAG_SHORTEST) &&
995  s->internal->shortest_end == AV_NOPTS_VALUE) {
996  AVPacket *top_pkt = &s->internal->packet_buffer->pkt;
997 
998  s->internal->shortest_end = av_rescale_q(top_pkt->dts,
999  s->streams[top_pkt->stream_index]->time_base,
1000  AV_TIME_BASE_Q);
1001  }
1002 
1003  if (s->internal->shortest_end != AV_NOPTS_VALUE) {
1004  while (s->internal->packet_buffer) {
1005  AVPacket *top_pkt = &s->internal->packet_buffer->pkt;
1006  AVStream *st;
1007  int64_t top_dts = av_rescale_q(top_pkt->dts,
1008  s->streams[top_pkt->stream_index]->time_base,
1009  AV_TIME_BASE_Q);
1010 
1011  if (s->internal->shortest_end + 1 >= top_dts)
1012  break;
1013 
1014  pktl = s->internal->packet_buffer;
1015  st = s->streams[pktl->pkt.stream_index];
1016 
1017  s->internal->packet_buffer = pktl->next;
1018  if (!s->internal->packet_buffer)
1019  s->internal->packet_buffer_end = NULL;
1020 
1021  if (st->internal->last_in_packet_buffer == pktl)
1023 
1024  av_packet_unref(&pktl->pkt);
1025  av_freep(&pktl);
1026  flush = 0;
1027  }
1028  }
1029 
1030  if (stream_count && flush) {
1031  AVStream *st;
1032  pktl = s->internal->packet_buffer;
1033  *out = pktl->pkt;
1034  st = s->streams[out->stream_index];
1035 
1036  s->internal->packet_buffer = pktl->next;
1037  if (!s->internal->packet_buffer)
1038  s->internal->packet_buffer_end = NULL;
1039 
1040  if (st->internal->last_in_packet_buffer == pktl)
1042  av_freep(&pktl);
1043 
1044  return 1;
1045  } else {
1046  return 0;
1047  }
1048 }
1049 
1051 {
1052  AVStream *st;
1053 
1054  if (stream_index < 0 || stream_index >= s->nb_streams)
1055  return AVERROR(EINVAL);
1056 
1057  st = s->streams[stream_index];
1058  *offset = st->internal->mux_ts_offset;
1059 
1060  if (s->output_ts_offset)
1061  *offset += av_rescale_q(s->output_ts_offset, AV_TIME_BASE_Q, st->time_base);
1062 
1063  return 0;
1064 }
1065 
1067 {
1068  PacketList *pktl = s->internal->packet_buffer;
1069  while (pktl) {
1070  if (pktl->pkt.stream_index == stream) {
1071  return &pktl->pkt;
1072  }
1073  pktl = pktl->next;
1074  }
1075  return NULL;
1076 }
1077 
1078 /**
1079  * Interleave an AVPacket correctly so it can be muxed.
1080  * @param out the interleaved packet will be output here
1081  * @param in the input packet; will always be blank on return if not NULL
1082  * @param flush 1 if no further packets are available as input and all
1083  * remaining packets should be output
1084  * @return 1 if a packet was output, 0 if no packet could be output,
1085  * < 0 if an error occurred
1086  */
1088 {
1089  if (s->oformat->interleave_packet) {
1090  return s->oformat->interleave_packet(s, out, in, flush);
1091  } else
1093 }
1094 
1096 {
1097  int ret;
1098 
1099  if (!(s->flags & AVFMT_FLAG_AUTO_BSF))
1100  return 1;
1101 
1102  if (s->oformat->check_bitstream) {
1103  if (!st->internal->bitstream_checked) {
1104  if ((ret = s->oformat->check_bitstream(s, pkt)) < 0)
1105  return ret;
1106  else if (ret == 1)
1107  st->internal->bitstream_checked = 1;
1108  }
1109  }
1110 
1111  return 1;
1112 }
1113 
1115 {
1116  for (;; ) {
1117  AVPacket opkt;
1118  int ret = interleave_packet(s, &opkt, pkt, flush);
1119  if (ret <= 0)
1120  return ret;
1121 
1122  pkt = NULL;
1123 
1124  ret = write_packet(s, &opkt);
1125 
1126  av_packet_unref(&opkt);
1127 
1128  if (ret < 0)
1129  return ret;
1130  }
1131 }
1132 
1133 static int write_packet_common(AVFormatContext *s, AVStream *st, AVPacket *pkt, int interleaved)
1134 {
1135  int ret;
1136 
1137  if (s->debug & FF_FDEBUG_TS)
1138  av_log(s, AV_LOG_DEBUG, "%s size:%d dts:%s pts:%s\n", __FUNCTION__,
1140 
1141  guess_pkt_duration(s, st, pkt);
1142 
1143 #if FF_API_COMPUTE_PKT_FIELDS2 && FF_API_LAVF_AVCTX
1144  if ((ret = compute_muxer_pkt_fields(s, st, pkt)) < 0 && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
1145  return ret;
1146 #endif
1147 
1148  if (interleaved) {
1149  if (pkt->dts == AV_NOPTS_VALUE && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
1150  return AVERROR(EINVAL);
1151  return interleaved_write_packet(s, pkt, 0);
1152  } else {
1153  return write_packet(s, pkt);
1154  }
1155 }
1156 
1157 static int write_packets_from_bsfs(AVFormatContext *s, AVStream *st, AVPacket *pkt, int interleaved)
1158 {
1159  AVBSFContext *bsfc = st->internal->bsfc;
1160  int ret;
1161 
1162  if ((ret = av_bsf_send_packet(bsfc, pkt)) < 0) {
1164  "Failed to send packet to filter %s for stream %d\n",
1165  bsfc->filter->name, st->index);
1166  return ret;
1167  }
1168 
1169  do {
1170  ret = av_bsf_receive_packet(bsfc, pkt);
1171  if (ret < 0) {
1172  if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
1173  return 0;
1174  av_log(s, AV_LOG_ERROR, "Error applying bitstream filters to an output "
1175  "packet for stream #%d: %s\n", st->index, av_err2str(ret));
1176  if (!(s->error_recognition & AV_EF_EXPLODE) && ret != AVERROR(ENOMEM))
1177  continue;
1178  return ret;
1179  }
1181  ret = write_packet_common(s, st, pkt, interleaved);
1182  if (ret >= 0 && !interleaved) // a successful write_packet_common already unrefed pkt for interleaved
1184  } while (ret >= 0);
1185 
1186  return ret;
1187 }
1188 
1189 static int write_packets_common(AVFormatContext *s, AVPacket *pkt, int interleaved)
1190 {
1191  AVStream *st;
1192  int ret = check_packet(s, pkt);
1193  if (ret < 0)
1194  return ret;
1195  st = s->streams[pkt->stream_index];
1196 
1197  ret = prepare_input_packet(s, st, pkt);
1198  if (ret < 0)
1199  return ret;
1200 
1201  ret = check_bitstream(s, st, pkt);
1202  if (ret < 0)
1203  return ret;
1204 
1205  if (st->internal->bsfc) {
1206  return write_packets_from_bsfs(s, st, pkt, interleaved);
1207  } else {
1208  return write_packet_common(s, st, pkt, interleaved);
1209  }
1210 }
1211 
1213 {
1214  AVPacket *pkt = s->internal->pkt;
1215  int ret;
1216 
1217  if (!in) {
1218  if (s->oformat->flags & AVFMT_ALLOW_FLUSH) {
1219  ret = s->oformat->write_packet(s, NULL);
1220  flush_if_needed(s);
1221  if (ret >= 0 && s->pb && s->pb->error < 0)
1222  ret = s->pb->error;
1223  return ret;
1224  }
1225  return 1;
1226  }
1227 
1228  if (in->flags & AV_PKT_FLAG_UNCODED_FRAME) {
1229  pkt = in;
1230  } else {
1231  /* We don't own in, so we have to make sure not to modify it.
1232  * The following avoids copying in's data unnecessarily.
1233  * Copying side data is unavoidable as a bitstream filter
1234  * may change it, e.g. free it on errors. */
1236  pkt->buf = NULL;
1237  pkt->data = in->data;
1238  pkt->size = in->size;
1239  ret = av_packet_copy_props(pkt, in);
1240  if (ret < 0)
1241  return ret;
1242  if (in->buf) {
1243  pkt->buf = av_buffer_ref(in->buf);
1244  if (!pkt->buf) {
1245  ret = AVERROR(ENOMEM);
1246  goto fail;
1247  }
1248  }
1249  }
1250 
1251  ret = write_packets_common(s, pkt, 0/*non-interleaved*/);
1252 
1253 fail:
1254  // Uncoded frames using the noninterleaved codepath are also freed here
1256  return ret;
1257 }
1258 
1260 {
1261  int ret;
1262 
1263  if (pkt) {
1264  ret = write_packets_common(s, pkt, 1/*interleaved*/);
1265  if (ret < 0)
1267  return ret;
1268  } else {
1269  av_log(s, AV_LOG_TRACE, "av_interleaved_write_frame FLUSH\n");
1270  return interleaved_write_packet(s, NULL, 1/*flush*/);
1271  }
1272 }
1273 
1275 {
1276  int i, ret1, ret = 0;
1277  AVPacket *pkt = s->internal->pkt;
1278 
1280  for (i = 0; i < s->nb_streams; i++) {
1281  if (s->streams[i]->internal->bsfc) {
1282  ret1 = write_packets_from_bsfs(s, s->streams[i], pkt, 1/*interleaved*/);
1283  if (ret1 < 0)
1285  if (ret >= 0)
1286  ret = ret1;
1287  }
1288  }
1289  ret1 = interleaved_write_packet(s, NULL, 1);
1290  if (ret >= 0)
1291  ret = ret1;
1292 
1293  if (s->oformat->write_trailer) {
1294  if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
1296  if (ret >= 0) {
1297  ret = s->oformat->write_trailer(s);
1298  } else {
1299  s->oformat->write_trailer(s);
1300  }
1301  }
1302 
1303  deinit_muxer(s);
1304 
1305  if (s->pb)
1306  avio_flush(s->pb);
1307  if (ret == 0)
1308  ret = s->pb ? s->pb->error : 0;
1309  for (i = 0; i < s->nb_streams; i++) {
1310  av_freep(&s->streams[i]->priv_data);
1311  av_freep(&s->streams[i]->index_entries);
1312  }
1313  if (s->oformat->priv_class)
1314  av_opt_free(s->priv_data);
1315  av_freep(&s->priv_data);
1316  return ret;
1317 }
1318 
1320  int64_t *dts, int64_t *wall)
1321 {
1322  if (!s->oformat || !s->oformat->get_output_timestamp)
1323  return AVERROR(ENOSYS);
1324  s->oformat->get_output_timestamp(s, stream, dts, wall);
1325  return 0;
1326 }
1327 
1328 int ff_write_chained(AVFormatContext *dst, int dst_stream, AVPacket *pkt,
1330 {
1331  AVPacket local_pkt;
1332  int ret;
1333 
1334  local_pkt = *pkt;
1335  local_pkt.stream_index = dst_stream;
1336 
1337  av_packet_rescale_ts(&local_pkt,
1338  src->streams[pkt->stream_index]->time_base,
1339  dst->streams[dst_stream]->time_base);
1340 
1341  if (interleave) ret = av_interleaved_write_frame(dst, &local_pkt);
1342  else ret = av_write_frame(dst, &local_pkt);
1343  pkt->buf = local_pkt.buf;
1344  pkt->side_data = local_pkt.side_data;
1345  pkt->side_data_elems = local_pkt.side_data_elems;
1346  return ret;
1347 }
1348 
1349 static void uncoded_frame_free(void *unused, uint8_t *data)
1350 {
1351  av_frame_free((AVFrame **)data);
1352  av_free(data);
1353 }
1354 
1355 static int write_uncoded_frame_internal(AVFormatContext *s, int stream_index,
1356  AVFrame *frame, int interleaved)
1357 {
1358  AVPacket *pkt = s->internal->pkt;
1359 
1360  av_assert0(s->oformat);
1361  if (!s->oformat->write_uncoded_frame) {
1362  av_frame_free(&frame);
1363  return AVERROR(ENOSYS);
1364  }
1365 
1366  if (!frame) {
1367  pkt = NULL;
1368  } else {
1369  size_t bufsize = sizeof(frame) + AV_INPUT_BUFFER_PADDING_SIZE;
1370  AVFrame **framep = av_mallocz(bufsize);
1371 
1372  if (!framep)
1373  goto fail;
1375  pkt->buf = av_buffer_create((void *)framep, bufsize,
1376  uncoded_frame_free, NULL, 0);
1377  if (!pkt->buf) {
1378  av_free(framep);
1379  fail:
1380  av_frame_free(&frame);
1381  return AVERROR(ENOMEM);
1382  }
1383  *framep = frame;
1384 
1385  pkt->data = (void *)framep;
1386  pkt->size = sizeof(frame);
1387  pkt->pts =
1388  pkt->dts = frame->pts;
1390  pkt->stream_index = stream_index;
1392  }
1393 
1394  return interleaved ? av_interleaved_write_frame(s, pkt) :
1395  av_write_frame(s, pkt);
1396 }
1397 
1399  AVFrame *frame)
1400 {
1401  return write_uncoded_frame_internal(s, stream_index, frame, 0);
1402 }
1403 
1405  AVFrame *frame)
1406 {
1407  return write_uncoded_frame_internal(s, stream_index, frame, 1);
1408 }
1409 
1411 {
1412  av_assert0(s->oformat);
1413  if (!s->oformat->write_uncoded_frame)
1414  return AVERROR(ENOSYS);
1415  return s->oformat->write_uncoded_frame(s, stream_index, NULL,
1417 }
static void flush(AVCodecContext *avctx)
static double val(void *priv, double ch)
Definition: aeval.c:76
static const char *const format[]
Definition: af_aiir.c:456
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)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));return ff_convert_dither(ac-> in
uint8_t
simple assert() macros that are a bit more flexible than ISO C assert().
#define av_assert2(cond)
assert() equivalent, that does lie in speed critical code.
Definition: avassert.h:64
#define av_assert1(cond)
assert() equivalent, that does not lie in speed critical code.
Definition: avassert.h:53
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
#define AV_EF_EXPLODE
abort decoding on minor error detection
Definition: avcodec.h:1660
#define FF_COMPLIANCE_NORMAL
Definition: avcodec.h:1608
Main libavformat public API header.
#define AVFMT_FLAG_SHORTEST
Stop muxing when the shortest stream stops.
Definition: avformat.h:1392
#define AVFMT_NOSTREAMS
Format does not require any streams.
Definition: avformat.h:467
#define AVFMT_FLAG_FLUSH_PACKETS
Flush the AVIOContext every packet.
Definition: avformat.h:1373
#define AVFMT_NODIMENSIONS
Format does not need width/height.
Definition: avformat.h:466
#define AVFMT_FLAG_BITEXACT
When muxing, try to avoid writing any random/volatile data to the output.
Definition: avformat.h:1380
#define AVFMT_ALLOW_FLUSH
Format allows flushing.
Definition: avformat.h:471
#define FF_FDEBUG_TS
Definition: avformat.h:1518
#define AVFMT_NOFILE
Demuxer will use avio_open, no opened file should be provided by the caller.
Definition: avformat.h:458
#define AVFMT_TS_NEGATIVE
Format allows muxing negative timestamps.
Definition: avformat.h:475
#define AVFMT_AVOID_NEG_TS_AUTO
Enabled when required by target format.
Definition: avformat.h:1578
#define AVFMT_TS_NONSTRICT
Format does not require strictly increasing timestamps, but they must still be monotonic.
Definition: avformat.h:472
#define AVFMT_FLAG_AUTO_BSF
Add bitstream filters as requested by the muxer.
Definition: avformat.h:1393
#define ff_const59
The ff_const59 define is not part of the public API and will be removed without further warning.
Definition: avformat.h:533
#define AV_DISPOSITION_ATTACHED_PIC
The stream is stored in the file as an attached picture/"cover art" (e.g.
Definition: avformat.h:841
#define AVFMT_AVOID_NEG_TS_MAKE_NON_NEGATIVE
Shift timestamps so they are non negative.
Definition: avformat.h:1579
#define AVFMT_NOTIMESTAMPS
Format does not need / have any timestamps.
Definition: avformat.h:462
#define AVFMT_AVOID_NEG_TS_MAKE_ZERO
Shift timestamps so that they start at 0.
Definition: avformat.h:1580
#define AV_DISPOSITION_TIMED_THUMBNAILS
The stream is sparse, and contains thumbnail images, often corresponding to chapter markers.
Definition: avformat.h:846
void avio_write_marker(AVIOContext *s, int64_t time, enum AVIODataMarkerType type)
Mark the written bytestream as a specific type.
Definition: aviobuf.c:479
@ AVIO_DATA_MARKER_TRAILER
Trailer data, which doesn't contain actual content, but only for finalizing the output file.
Definition: avio.h:140
@ AVIO_DATA_MARKER_HEADER
Header data; this needs to be present for the stream to be decodeable.
Definition: avio.h:115
@ AVIO_DATA_MARKER_UNKNOWN
This is any, unlabelled data.
Definition: avio.h:135
@ AVIO_DATA_MARKER_FLUSH_POINT
A point in the output bytestream where the underlying AVIOContext might flush the buffer depending on...
Definition: avio.h:146
void avio_flush(AVIOContext *s)
Force flushing of buffered data.
Definition: aviobuf.c:245
#define s(width, name)
Definition: cbs_vp9.c:257
#define f(width, name)
Definition: cbs_vp9.c:255
#define fail()
Definition: checkasm.h:133
@ AV_FIELD_UNKNOWN
Definition: codec_par.h:37
@ AV_FIELD_PROGRESSIVE
Definition: codec_par.h:38
#define FFSWAP(type, a, b)
Definition: common.h:108
#define MKTAG(a, b, c, d)
Definition: common.h:478
#define FFMAX(a, b)
Definition: common.h:103
#define NULL
Definition: coverity.c:32
long long int64_t
Definition: coverity.c:34
static __device__ float fabs(float a)
Definition: cuda_runtime.h:182
#define max(a, b)
Definition: cuda_runtime.h:33
static AVFrame * frame
Public dictionary API.
static av_always_inline void RENAME() interleave(TYPE *dst, TYPE *src0, TYPE *src1, int w2, int add, int shift)
static void comp(unsigned char *dst, ptrdiff_t dst_stride, unsigned char *src, ptrdiff_t src_stride, int add)
Definition: eamad.c:85
const OptionDef options[]
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:1631
#define AV_OPT_SEARCH_CHILDREN
Search in possible children of the given object first.
Definition: opt.h:560
void av_opt_free(void *obj)
Free all allocated objects in obj.
Definition: opt.c:1611
void av_opt_set_defaults(void *s)
Set the values of all AVOption fields to their default values.
Definition: opt.c:1358
int av_opt_set_dict(void *obj, AVDictionary **options)
Set all the options from a given dictionary on an object.
Definition: opt.c:1656
int avcodec_parameters_from_context(AVCodecParameters *par, const AVCodecContext *codec)
Fill the parameters struct based on the values from the supplied codec context.
Definition: codec_par.c:90
#define AV_CODEC_FLAG_BITEXACT
Use only bitexact stuff (except (I)DCT).
Definition: avcodec.h:333
int av_bsf_receive_packet(AVBSFContext *ctx, AVPacket *pkt)
Retrieve a filtered packet.
Definition: bsf.c:227
int av_bsf_send_packet(AVBSFContext *ctx, AVPacket *pkt)
Submit a packet for filtering.
Definition: bsf.c:201
AVCodecID
Identify the syntax and semantics of the bitstream.
Definition: codec_id.h:46
const AVCodecDescriptor * avcodec_descriptor_get(enum AVCodecID id)
Definition: codec_desc.c:3501
#define AV_CODEC_PROP_REORDER
Codec supports frame reordering.
Definition: codec_desc.h:92
@ AV_CODEC_ID_RAWVIDEO
Definition: codec_id.h:62
@ AV_CODEC_ID_NONE
Definition: codec_id.h:47
@ AV_CODEC_ID_VP8
Definition: codec_id.h:189
@ AV_CODEC_ID_MJPEG
Definition: codec_id.h:56
@ AV_CODEC_ID_VP9
Definition: codec_id.h:217
@ AV_CODEC_ID_MPEG1VIDEO
Definition: codec_id.h:50
@ AV_CODEC_ID_MPEG2VIDEO
preferred ID for MPEG-1/2 video decoding
Definition: codec_id.h:51
#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
int av_get_bits_per_sample(enum AVCodecID codec_id)
Return codec bits per sample.
Definition: utils.c:639
int av_get_audio_frame_duration2(AVCodecParameters *par, int frame_bytes)
This function is the same as av_get_audio_frame_duration(), except it works with AVCodecParameters in...
Definition: utils.c:874
int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
Return audio frame duration.
Definition: utils.c:864
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
Definition: avpacket.c:634
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: packet.h:410
int av_packet_make_refcounted(AVPacket *pkt)
Ensure the data described by a given packet is reference counted.
Definition: avpacket.c:696
void av_packet_move_ref(AVPacket *dst, AVPacket *src)
Move every field in src to dst and reset src.
Definition: avpacket.c:690
int av_packet_copy_props(AVPacket *dst, const AVPacket *src)
Copy only "properties" fields from src to dst.
Definition: avpacket.c:600
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:737
void avformat_free_context(AVFormatContext *s)
Free an AVFormatContext and all its streams.
Definition: utils.c:4436
AVFormatContext * avformat_alloc_context(void)
Allocate an AVFormatContext.
Definition: options.c:211
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:486
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:506
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:76
int av_interleaved_write_frame(AVFormatContext *s, AVPacket *pkt)
Write a packet to an output media file ensuring correct interleaving.
Definition: mux.c:1259
#define AVSTREAM_INIT_IN_INIT_OUTPUT
stream parameters initialized in avformat_init_output
Definition: avformat.h:2426
#define AVSTREAM_INIT_IN_WRITE_HEADER
stream parameters initialized in avformat_write_header
Definition: avformat.h:2425
int av_write_uncoded_frame_query(AVFormatContext *s, int stream_index)
Test whether a muxer supports uncoded frame.
Definition: mux.c:1410
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:1319
int av_write_trailer(AVFormatContext *s)
Write the stream trailer to an output media file and free the file private data.
Definition: mux.c:1274
int av_write_frame(AVFormatContext *s, AVPacket *in)
Write a packet to an output media file.
Definition: mux.c:1212
int av_write_uncoded_frame(AVFormatContext *s, int stream_index, AVFrame *frame)
Write an uncoded frame to an output media file.
Definition: mux.c:1398
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:1404
unsigned int av_codec_get_tag(const struct AVCodecTag *const *tags, enum AVCodecID id)
Get the codec tag for the given codec id id.
AVBufferRef * av_buffer_create(uint8_t *data, buffer_size_t size, void(*free)(void *opaque, uint8_t *data), void *opaque, int flags)
Create an AVBuffer from an existing array.
Definition: buffer.c:29
AVBufferRef * av_buffer_ref(AVBufferRef *buf)
Create a new reference to an AVBuffer.
Definition: buffer.c:93
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_DICT_IGNORE_SUFFIX
Return first entry in a dictionary whose first part corresponds to the search key,...
Definition: dict.h:70
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_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
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
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
#define AVERROR_EOF
End of file.
Definition: error.h:55
#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 AVERROR(e)
Definition: error.h:43
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:203
#define AV_LOG_TRACE
Extremely verbose debugging, useful for libav* development.
Definition: log.h:220
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:215
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:200
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:194
static double av_q2d(AVRational a)
Convert an AVRational to a double.
Definition: rational.h:104
static int av_cmp_q(AVRational a, AVRational b)
Compare two rationals.
Definition: rational.h:89
static av_always_inline AVRational av_inv_q(AVRational q)
Invert a rational.
Definition: rational.h:159
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
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
@ AV_ROUND_UP
Round toward +infinity.
Definition: mathematics.h:83
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
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
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
char * av_strdup(const char *s)
Duplicate a string.
Definition: mem.c:253
#define av_fourcc2str(fourcc)
Definition: avutil.h:348
@ AVMEDIA_TYPE_ATTACHMENT
Opaque data information usually sparse.
Definition: avutil.h:205
@ AVMEDIA_TYPE_AUDIO
Definition: avutil.h:202
@ AVMEDIA_TYPE_SUBTITLE
Definition: avutil.h:204
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
@ AVMEDIA_TYPE_DATA
Opaque data information usually continuous.
Definition: avutil.h:203
@ AVMEDIA_TYPE_UNKNOWN
Usually treated as AVMEDIA_TYPE_DATA.
Definition: avutil.h:200
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 AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
#define AV_TIME_BASE
Internal time base represented as integer.
Definition: avutil.h:254
#define AV_TIME_BASE_Q
Internal time base represented as fractional value.
Definition: avutil.h:260
int i
Definition: input.c:407
common internal api header.
unsigned int avpriv_toupper4(unsigned int x)
Definition: utils.c:935
int ff_is_intra_only(enum AVCodecID id)
Definition: utils.c:1006
@ AV_WRITE_UNCODED_FRAME_QUERY
Query whether the feature is possible on this stream.
Definition: internal.h:780
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:4945
#define LIBAVFORMAT_IDENT
Definition: version.h:46
common internal API header
#define FF_DISABLE_DEPRECATION_WARNINGS
Definition: internal.h:83
#define FF_ENABLE_DEPRECATION_WARNINGS
Definition: internal.h:84
const char * desc
Definition: libsvtav1.c:79
uint32_t tag
Definition: movenc.c:1611
const AVPacket * ff_interleaved_peek(AVFormatContext *s, int stream)
Find the next packet in the interleaving queue for the given stream.
Definition: mux.c:1066
#define AV_PKT_FLAG_UNCODED_FRAME
Definition: mux.c:541
static void deinit_muxer(AVFormatContext *s)
Definition: mux.c:478
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:932
static FF_DISABLE_DEPRECATION_WARNINGS int compute_muxer_pkt_fields(AVFormatContext *s, AVStream *st, AVPacket *pkt)
Definition: mux.c:547
static int interleaved_write_packet(AVFormatContext *s, AVPacket *pkt, int flush)
Definition: mux.c:1114
enum AVChromaLocation ff_choose_chroma_location(AVFormatContext *s, AVStream *st)
Chooses a timebase for muxing the specified stream.
Definition: mux.c:106
static FF_ENABLE_DEPRECATION_WARNINGS void guess_pkt_duration(AVFormatContext *s, AVStream *st, AVPacket *pkt)
Definition: mux.c:642
static int init_pts(AVFormatContext *s)
Definition: mux.c:423
static void uncoded_frame_free(void *unused, uint8_t *data)
Definition: mux.c:1349
static int write_packet(AVFormatContext *s, AVPacket *pkt)
Shift timestamps and call muxer; the original pts/dts are not kept.
Definition: mux.c:681
static int interleave_packet(AVFormatContext *s, AVPacket *out, AVPacket *in, int flush)
Interleave an AVPacket correctly so it can be muxed.
Definition: mux.c:1087
static int write_packets_common(AVFormatContext *s, AVPacket *pkt, int interleaved)
Definition: mux.c:1189
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:1328
int ff_interleave_add_packet(AVFormatContext *s, AVPacket *pkt, int(*compare)(AVFormatContext *, const AVPacket *, const AVPacket *))
Add packet to an AVFormatContext's packet_buffer list, determining its interleaved position using com...
Definition: mux.c:830
AVRational ff_choose_timebase(AVFormatContext *s, AVStream *st, int min_precision)
Chooses a timebase for muxing the specified stream.
Definition: mux.c:90
static void frac_add(FFFrac *f, int64_t incr)
Fractional addition to f: f = f + (incr / f->den).
Definition: mux.c:70
static int write_packets_from_bsfs(AVFormatContext *s, AVStream *st, AVPacket *pkt, int interleaved)
Definition: mux.c:1157
static void flush_if_needed(AVFormatContext *s)
Definition: mux.c:468
static int write_packet_common(AVFormatContext *s, AVStream *st, AVPacket *pkt, int interleaved)
Definition: mux.c:1133
#define CHUNK_START
Definition: mux.c:828
static int check_packet(AVFormatContext *s, AVPacket *pkt)
Definition: mux.c:764
static int interleave_compare_dts(AVFormatContext *s, const AVPacket *next, const AVPacket *pkt)
Definition: mux.c:902
int ff_get_muxer_ts_offset(AVFormatContext *s, int stream_index, int64_t *offset)
Definition: mux.c:1050
static int init_muxer(AVFormatContext *s, AVDictionary **options)
Definition: mux.c:231
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:136
static int check_bitstream(AVFormatContext *s, AVStream *st, AVPacket *pkt)
Definition: mux.c:1095
static int prepare_input_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)
Definition: mux.c:780
static int write_uncoded_frame_internal(AVFormatContext *s, int stream_index, AVFrame *frame, int interleaved)
Definition: mux.c:1355
static void frac_init(FFFrac *f, int64_t val, int64_t num, int64_t den)
f = val + (num / den) + 0.5.
Definition: mux.c:52
static int validate_codec_tag(AVFormatContext *s, AVStream *st)
Definition: mux.c:197
const char data[16]
Definition: mxf.c:142
int frame_size
Definition: mxfenc.c:2206
AVOptions.
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2573
AVChromaLocation
Location of chroma samples.
Definition: pixfmt.h:605
@ AVCHROMA_LOC_TOPLEFT
ITU-R 601, SMPTE 274M 296M S314M(DV 4:1:1), mpeg2 4:2:2.
Definition: pixfmt.h:609
@ AVCHROMA_LOC_LEFT
MPEG-2/4 4:2:0, H.264 default for 4:2:0.
Definition: pixfmt.h:607
@ AVCHROMA_LOC_CENTER
MPEG-1 4:2:0, JPEG 4:2:0, H.263 4:2:0.
Definition: pixfmt.h:608
@ AVCHROMA_LOC_UNSPECIFIED
Definition: pixfmt.h:606
The bitstream filter state.
Definition: bsf.h:49
AVRational time_base_out
The timebase used for the timestamps of the output packets.
Definition: bsf.h:95
const struct AVBitStreamFilter * filter
The bitstream filter this context is an instance of.
Definition: bsf.h:58
const char * name
Definition: bsf.h:99
Describe the class of an AVClass context structure.
Definition: log.h:67
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:796
enum AVMediaType codec_type
Definition: avcodec.h:544
This struct describes the properties of a single codec described by an AVCodecID.
Definition: codec_desc.h:38
This struct describes the properties of an encoded stream.
Definition: codec_par.h:52
enum AVFieldOrder field_order
Video only.
Definition: codec_par.h:141
int channels
Audio only.
Definition: codec_par.h:166
int width
Video only.
Definition: codec_par.h:126
enum AVMediaType codec_type
General type of the encoded data.
Definition: codec_par.h:56
int block_align
Audio only.
Definition: codec_par.h:177
AVRational sample_aspect_ratio
Video only.
Definition: codec_par.h:136
int video_delay
Video only.
Definition: codec_par.h:155
uint32_t codec_tag
Additional information about the codec (corresponds to the AVI FOURCC).
Definition: codec_par.h:64
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: codec_par.h:60
int sample_rate
Audio only.
Definition: codec_par.h:170
enum AVChromaLocation chroma_location
Definition: codec_par.h:150
enum AVCodecID id
Definition: internal.h:43
unsigned int tag
Definition: internal.h:44
char * key
Definition: dict.h:82
Format I/O context.
Definition: avformat.h:1232
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1300
This structure describes decoded (raw) audio or video data.
Definition: frame.h:318
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:411
int64_t pkt_duration
duration of the corresponding packet, expressed in AVStream->time_base units, 0 if unknown.
Definition: frame.h:597
int flags
can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER, AVFMT_GLOBALHEADER, AVFMT_NOTIMESTAMPS,...
Definition: avformat.h:510
const struct AVCodecTag *const * codec_tag
List of supported codec_id-codec_tag pairs, ordered by "better choice first".
Definition: avformat.h:516
int priv_data_size
size of private data so that it can be allocated in the wrapper
Definition: avformat.h:543
const AVClass * priv_class
AVClass for the private context.
Definition: avformat.h:519
This structure stores compressed data.
Definition: packet.h:346
int stream_index
Definition: packet.h:371
AVBufferRef * buf
A reference to the reference-counted buffer where the packet data is stored.
Definition: packet.h:352
int flags
A combination of AV_PKT_FLAG values.
Definition: packet.h:375
int size
Definition: packet.h:370
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
Definition: packet.h:387
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: packet.h:362
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed.
Definition: packet.h:368
uint8_t * data
Definition: packet.h:369
AVPacketSideData * side_data
Additional packet data that can be provided by the container.
Definition: packet.h:380
int side_data_elems
Definition: packet.h:381
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
uint8_t log2_chroma_w
Amount to shift the luma width right to find the chroma width.
Definition: pixdesc.h:92
uint8_t log2_chroma_h
Amount to shift the luma height right to find the chroma height.
Definition: pixdesc.h:101
Rational number (pair of numerator and denominator).
Definition: rational.h:58
int num
Numerator.
Definition: rational.h:59
int den
Denominator.
Definition: rational.h:60
int reorder
Set to 1 if the codec allows reordering, so pts can be different from dts.
Definition: internal.h:163
AVCodecContext * avctx
The codec context used by avformat_find_stream_info, the parser, etc.
Definition: internal.h:180
int64_t interleaver_chunk_duration
Definition: internal.h:240
int64_t mux_ts_offset
Timestamp offset added to timestamps before muxing.
Definition: internal.h:293
int bitstream_checked
Whether or not check_bitstream should still be run on each packet.
Definition: internal.h:175
int64_t pts_buffer[MAX_REORDER_DELAY+1]
Definition: internal.h:325
struct PacketList * last_in_packet_buffer
last packet in packet_buffer for this stream when muxing.
Definition: internal.h:351
FFFrac * priv_pts
Definition: internal.h:204
AVBSFContext * bsfc
bitstream filter to run on stream
Definition: internal.h:170
int64_t interleaver_chunk_size
Definition: internal.h:239
Stream structure.
Definition: avformat.h:873
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:1038
AVRational sample_aspect_ratio
sample aspect ratio (0 if unknown)
Definition: avformat.h:935
int index
stream index in AVFormatContext
Definition: avformat.h:874
AVRational avg_frame_rate
Average framerate.
Definition: avformat.h:946
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented.
Definition: avformat.h:902
attribute_deprecated AVCodecContext * codec
Definition: avformat.h:886
int64_t cur_dts
Definition: avformat.h:1066
AVStreamInternal * internal
An opaque field for libavformat internal usage.
Definition: avformat.h:1113
int disposition
AV_DISPOSITION_* bit field.
Definition: avformat.h:926
The exact value of the fractional number is: 'val + num / den'.
Definition: internal.h:59
int64_t num
Definition: internal.h:60
int64_t val
Definition: internal.h:60
int64_t den
Definition: internal.h:60
struct PacketList * next
AVPacket pkt
#define av_free(p)
#define av_freep(p)
#define av_malloc(s)
#define av_log(a,...)
static void error(const char *err)
static uint8_t tmp[11]
Definition: aes_ctr.c:27
#define src
Definition: vp8dsp.c:255
FILE * out
Definition: movenc.c:54
AVPacket * pkt
Definition: movenc.c:59
timestamp utils, mostly useful for debugging/logging purposes
#define av_ts2str(ts)
Convenience macro, the return value should be used only directly in function arguments but never stan...
Definition: timestamp.h:54
@ MAX_REORDER_DELAY
Definition: vaapi_encode.h:44
static float compare(const AVFrame *haystack, const AVFrame *obj, int offx, int offy)
Definition: vf_find_rect.c:104
if(ret< 0)
Definition: vf_mcdeint.c:282
static const uint8_t offset[127][2]
Definition: vf_spp.c:107