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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 "avio_internal.h"
24 #include "internal.h"
25 #include "libavcodec/internal.h"
26 #include "libavcodec/bytestream.h"
27 #include "libavutil/opt.h"
28 #include "libavutil/dict.h"
29 #include "libavutil/pixdesc.h"
30 #include "libavutil/timestamp.h"
31 #include "metadata.h"
32 #include "id3v2.h"
33 #include "libavutil/avassert.h"
34 #include "libavutil/avstring.h"
35 #include "libavutil/internal.h"
36 #include "libavutil/mathematics.h"
37 #include "libavutil/parseutils.h"
38 #include "libavutil/time.h"
39 #include "riff.h"
40 #include "audiointerleave.h"
41 #include "url.h"
42 #include <stdarg.h>
43 #if CONFIG_NETWORK
44 #include "network.h"
45 #endif
46 
47 /**
48  * @file
49  * muxing functions for use within libavformat
50  */
51 
52 /* fraction handling */
53 
54 /**
55  * f = val + (num / den) + 0.5.
56  *
57  * 'num' is normalized so that it is such as 0 <= num < den.
58  *
59  * @param f fractional number
60  * @param val integer value
61  * @param num must be >= 0
62  * @param den must be >= 1
63  */
64 static void frac_init(FFFrac *f, int64_t val, int64_t num, int64_t den)
65 {
66  num += (den >> 1);
67  if (num >= den) {
68  val += num / den;
69  num = num % den;
70  }
71  f->val = val;
72  f->num = num;
73  f->den = den;
74 }
75 
76 /**
77  * Fractional addition to f: f = f + (incr / f->den).
78  *
79  * @param f fractional number
80  * @param incr increment, can be positive or negative
81  */
82 static void frac_add(FFFrac *f, int64_t incr)
83 {
84  int64_t num, den;
85 
86  num = f->num + incr;
87  den = f->den;
88  if (num < 0) {
89  f->val += num / den;
90  num = num % den;
91  if (num < 0) {
92  num += den;
93  f->val--;
94  }
95  } else if (num >= den) {
96  f->val += num / den;
97  num = num % den;
98  }
99  f->num = num;
100 }
101 
103 {
104  AVRational q;
105  int j;
106 
107  q = st->time_base;
108 
109  for (j=2; j<14; j+= 1+(j>2))
110  while (q.den / q.num < min_precision && q.num % j == 0)
111  q.num /= j;
112  while (q.den / q.num < min_precision && q.den < (1<<24))
113  q.den <<= 1;
114 
115  return q;
116 }
117 
119 {
120  AVCodecParameters *par = st->codecpar;
121  const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(par->format);
122 
124  return par->chroma_location;
125 
126  if (pix_desc) {
127  if (pix_desc->log2_chroma_h == 0) {
128  return AVCHROMA_LOC_TOPLEFT;
129  } else if (pix_desc->log2_chroma_w == 1 && pix_desc->log2_chroma_h == 1) {
131  switch (par->codec_id) {
132  case AV_CODEC_ID_MJPEG:
134  }
135  }
137  switch (par->codec_id) {
139  }
140  }
141  }
142  }
143 
145 
146 }
147 
149  const char *format, const char *filename)
150 {
152  int ret = 0;
153 
154  *avctx = NULL;
155  if (!s)
156  goto nomem;
157 
158  if (!oformat) {
159  if (format) {
160  oformat = av_guess_format(format, NULL, NULL);
161  if (!oformat) {
162  av_log(s, AV_LOG_ERROR, "Requested output format '%s' is not a suitable output format\n", format);
163  ret = AVERROR(EINVAL);
164  goto error;
165  }
166  } else {
167  oformat = av_guess_format(NULL, filename, NULL);
168  if (!oformat) {
169  ret = AVERROR(EINVAL);
170  av_log(s, AV_LOG_ERROR, "Unable to find a suitable output format for '%s'\n",
171  filename);
172  goto error;
173  }
174  }
175  }
176 
177  s->oformat = oformat;
178  if (s->oformat->priv_data_size > 0) {
180  if (!s->priv_data)
181  goto nomem;
182  if (s->oformat->priv_class) {
183  *(const AVClass**)s->priv_data= s->oformat->priv_class;
185  }
186  } else
187  s->priv_data = NULL;
188 
189  if (filename)
190  av_strlcpy(s->filename, filename, sizeof(s->filename));
191  *avctx = s;
192  return 0;
193 nomem:
194  av_log(s, AV_LOG_ERROR, "Out of memory\n");
195  ret = AVERROR(ENOMEM);
196 error:
198  return ret;
199 }
200 
202 {
203  const AVCodecTag *avctag;
204  int n;
205  enum AVCodecID id = AV_CODEC_ID_NONE;
206  int64_t tag = -1;
207 
208  /**
209  * Check that tag + id is in the table
210  * If neither is in the table -> OK
211  * If tag is in the table with another id -> FAIL
212  * If id is in the table with another tag -> FAIL unless strict < normal
213  */
214  for (n = 0; s->oformat->codec_tag[n]; n++) {
215  avctag = s->oformat->codec_tag[n];
216  while (avctag->id != AV_CODEC_ID_NONE) {
217  if (avpriv_toupper4(avctag->tag) == avpriv_toupper4(st->codecpar->codec_tag)) {
218  id = avctag->id;
219  if (id == st->codecpar->codec_id)
220  return 1;
221  }
222  if (avctag->id == st->codecpar->codec_id)
223  tag = avctag->tag;
224  avctag++;
225  }
226  }
227  if (id != AV_CODEC_ID_NONE)
228  return 0;
229  if (tag >= 0 && (s->strict_std_compliance >= FF_COMPLIANCE_NORMAL))
230  return 0;
231  return 1;
232 }
233 
234 
236 {
237  int ret = 0, i;
238  AVStream *st;
239  AVDictionary *tmp = NULL;
240  AVCodecParameters *par = NULL;
241  AVOutputFormat *of = s->oformat;
242  const AVCodecDescriptor *desc;
244 
245  if (options)
246  av_dict_copy(&tmp, *options, 0);
247 
248  if ((ret = av_opt_set_dict(s, &tmp)) < 0)
249  goto fail;
250  if (s->priv_data && s->oformat->priv_class && *(const AVClass**)s->priv_data==s->oformat->priv_class &&
251  (ret = av_opt_set_dict2(s->priv_data, &tmp, AV_OPT_SEARCH_CHILDREN)) < 0)
252  goto fail;
253 
254 #if FF_API_LAVF_AVCTX
256  if (s->nb_streams && s->streams[0]->codec->flags & AV_CODEC_FLAG_BITEXACT) {
257  if (!(s->flags & AVFMT_FLAG_BITEXACT)) {
258 #if FF_API_LAVF_BITEXACT
260  "Setting the AVFormatContext to bitexact mode, because "
261  "the AVCodecContext is in that mode. This behavior will "
262  "change in the future. To keep the current behavior, set "
263  "AVFormatContext.flags |= AVFMT_FLAG_BITEXACT.\n");
265 #else
267  "The AVFormatContext is not in set to bitexact mode, only "
268  "the AVCodecContext. If this is not intended, set "
269  "AVFormatContext.flags |= AVFMT_FLAG_BITEXACT.\n");
270 #endif
271  }
272  }
274 #endif
275 
276  // some sanity checks
277  if (s->nb_streams == 0 && !(of->flags & AVFMT_NOSTREAMS)) {
278  av_log(s, AV_LOG_ERROR, "No streams to mux were specified\n");
279  ret = AVERROR(EINVAL);
280  goto fail;
281  }
282 
283  for (i = 0; i < s->nb_streams; i++) {
284  st = s->streams[i];
285  par = st->codecpar;
286 
287 #if FF_API_LAVF_CODEC_TB && FF_API_LAVF_AVCTX
289  if (!st->time_base.num && st->codec->time_base.num) {
290  av_log(s, AV_LOG_WARNING, "Using AVStream.codec.time_base as a "
291  "timebase hint to the muxer is deprecated. Set "
292  "AVStream.time_base instead.\n");
293  avpriv_set_pts_info(st, 64, st->codec->time_base.num, st->codec->time_base.den);
294  }
296 #endif
297 
298 #if FF_API_LAVF_AVCTX
301  st->codec->codec_type != AVMEDIA_TYPE_UNKNOWN) {
302  av_log(s, AV_LOG_WARNING, "Using AVStream.codec to pass codec "
303  "parameters to muxers is deprecated, use AVStream.codecpar "
304  "instead.\n");
305  ret = avcodec_parameters_from_context(st->codecpar, st->codec);
306  if (ret < 0)
307  goto fail;
308  }
310 #endif
311 
312  if (!st->time_base.num) {
313  /* fall back on the default timebase values */
314  if (par->codec_type == AVMEDIA_TYPE_AUDIO && par->sample_rate)
315  avpriv_set_pts_info(st, 64, 1, par->sample_rate);
316  else
317  avpriv_set_pts_info(st, 33, 1, 90000);
318  }
319 
320  switch (par->codec_type) {
321  case AVMEDIA_TYPE_AUDIO:
322  if (par->sample_rate <= 0) {
323  av_log(s, AV_LOG_ERROR, "sample rate not set\n");
324  ret = AVERROR(EINVAL);
325  goto fail;
326  }
327  if (!par->block_align)
328  par->block_align = par->channels *
329  av_get_bits_per_sample(par->codec_id) >> 3;
330  break;
331  case AVMEDIA_TYPE_VIDEO:
332  if ((par->width <= 0 || par->height <= 0) &&
333  !(of->flags & AVFMT_NODIMENSIONS)) {
334  av_log(s, AV_LOG_ERROR, "dimensions not set\n");
335  ret = AVERROR(EINVAL);
336  goto fail;
337  }
340  ) {
341  if (st->sample_aspect_ratio.num != 0 &&
342  st->sample_aspect_ratio.den != 0 &&
343  par->sample_aspect_ratio.num != 0 &&
344  par->sample_aspect_ratio.den != 0) {
345  av_log(s, AV_LOG_ERROR, "Aspect ratio mismatch between muxer "
346  "(%d/%d) and encoder layer (%d/%d)\n",
349  par->sample_aspect_ratio.den);
350  ret = AVERROR(EINVAL);
351  goto fail;
352  }
353  }
354  break;
355  }
356 
357  desc = avcodec_descriptor_get(par->codec_id);
358  if (desc && desc->props & AV_CODEC_PROP_REORDER)
359  st->internal->reorder = 1;
360 
361  if (of->codec_tag) {
362  if ( par->codec_tag
363  && par->codec_id == AV_CODEC_ID_RAWVIDEO
364  && ( av_codec_get_tag(of->codec_tag, par->codec_id) == 0
365  || av_codec_get_tag(of->codec_tag, par->codec_id) == MKTAG('r', 'a', 'w', ' '))
366  && !validate_codec_tag(s, st)) {
367  // the current rawvideo encoding system ends up setting
368  // the wrong codec_tag for avi/mov, we override it here
369  par->codec_tag = 0;
370  }
371  if (par->codec_tag) {
372  if (!validate_codec_tag(s, st)) {
373  const uint32_t otag = av_codec_get_tag(s->oformat->codec_tag, par->codec_id);
374  av_log(s, AV_LOG_ERROR,
375  "Tag %s incompatible with output codec id '%d' (%s)\n",
376  av_fourcc2str(par->codec_tag), par->codec_id, av_fourcc2str(otag));
377  ret = AVERROR_INVALIDDATA;
378  goto fail;
379  }
380  } else
381  par->codec_tag = av_codec_get_tag(of->codec_tag, par->codec_id);
382  }
383 
386  }
387 
388  if (!s->priv_data && of->priv_data_size > 0) {
390  if (!s->priv_data) {
391  ret = AVERROR(ENOMEM);
392  goto fail;
393  }
394  if (of->priv_class) {
395  *(const AVClass **)s->priv_data = of->priv_class;
397  if ((ret = av_opt_set_dict2(s->priv_data, &tmp, AV_OPT_SEARCH_CHILDREN)) < 0)
398  goto fail;
399  }
400  }
401 
402  /* set muxer identification string */
403  if (!(s->flags & AVFMT_FLAG_BITEXACT)) {
404  av_dict_set(&s->metadata, "encoder", LIBAVFORMAT_IDENT, 0);
405  } else {
406  av_dict_set(&s->metadata, "encoder", NULL, 0);
407  }
408 
409  for (e = NULL; e = av_dict_get(s->metadata, "encoder-", e, AV_DICT_IGNORE_SUFFIX); ) {
410  av_dict_set(&s->metadata, e->key, NULL, 0);
411  }
412 
413  if (options) {
414  av_dict_free(options);
415  *options = tmp;
416  }
417 
418  if (s->oformat->init) {
419  if ((ret = s->oformat->init(s)) < 0) {
420  if (s->oformat->deinit)
421  s->oformat->deinit(s);
422  return ret;
423  }
424  return ret == 0;
425  }
426 
427  return 0;
428 
429 fail:
430  av_dict_free(&tmp);
431  return ret;
432 }
433 
435 {
436  int i;
437  AVStream *st;
438 
439  /* init PTS generation */
440  for (i = 0; i < s->nb_streams; i++) {
441  int64_t den = AV_NOPTS_VALUE;
442  st = s->streams[i];
443 
444  switch (st->codecpar->codec_type) {
445  case AVMEDIA_TYPE_AUDIO:
446  den = (int64_t)st->time_base.num * st->codecpar->sample_rate;
447  break;
448  case AVMEDIA_TYPE_VIDEO:
449  den = (int64_t)st->time_base.num * st->time_base.den;
450  break;
451  default:
452  break;
453  }
454 
455  if (!st->priv_pts)
456  st->priv_pts = av_mallocz(sizeof(*st->priv_pts));
457  if (!st->priv_pts)
458  return AVERROR(ENOMEM);
459 
460  if (den != AV_NOPTS_VALUE) {
461  if (den <= 0)
462  return AVERROR_INVALIDDATA;
463 
464  frac_init(st->priv_pts, 0, 0, den);
465  }
466  }
467 
468  return 0;
469 }
470 
472 {
473  if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
475  if (s->oformat->write_header) {
476  int ret = s->oformat->write_header(s);
477  if (ret >= 0 && s->pb && s->pb->error < 0)
478  ret = s->pb->error;
479  s->internal->write_header_ret = ret;
480  if (ret < 0)
481  return ret;
482  if (s->flush_packets && s->pb && s->pb->error >= 0 && s->flags & AVFMT_FLAG_FLUSH_PACKETS)
483  avio_flush(s->pb);
484  }
485  s->internal->header_written = 1;
486  if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
488  return 0;
489 }
490 
492 {
493  int ret = 0;
494 
495  if ((ret = init_muxer(s, options)) < 0)
496  return ret;
497 
498  s->internal->initialized = 1;
499  s->internal->streams_initialized = ret;
500 
501  if (s->oformat->init && ret) {
502  if ((ret = init_pts(s)) < 0)
503  return ret;
504 
505  if (s->avoid_negative_ts < 0) {
508  s->avoid_negative_ts = 0;
509  } else
511  }
512 
514  }
515 
517 }
518 
520 {
521  int ret = 0;
522  int already_initialized = s->internal->initialized;
523  int streams_already_initialized = s->internal->streams_initialized;
524 
525  if (!already_initialized)
526  if ((ret = avformat_init_output(s, options)) < 0)
527  return ret;
528 
529  if (!(s->oformat->check_bitstream && s->flags & AVFMT_FLAG_AUTO_BSF)) {
530  ret = write_header_internal(s);
531  if (ret < 0)
532  goto fail;
533  }
534 
535  if (!s->internal->streams_initialized) {
536  if ((ret = init_pts(s)) < 0)
537  goto fail;
538 
539  if (s->avoid_negative_ts < 0) {
542  s->avoid_negative_ts = 0;
543  } else
545  }
546  }
547 
548  return streams_already_initialized;
549 
550 fail:
551  if (s->oformat->deinit)
552  s->oformat->deinit(s);
553  return ret;
554 }
555 
556 #define AV_PKT_FLAG_UNCODED_FRAME 0x2000
557 
558 /* Note: using sizeof(AVFrame) from outside lavu is unsafe in general, but
559  it is only being used internally to this file as a consistency check.
560  The value is chosen to be very unlikely to appear on its own and to cause
561  immediate failure if used anywhere as a real size. */
562 #define UNCODED_FRAME_PACKET_SIZE (INT_MIN / 3 * 2 + (int)sizeof(AVFrame))
563 
564 
565 #if FF_API_COMPUTE_PKT_FIELDS2 && FF_API_LAVF_AVCTX
567 //FIXME merge with compute_pkt_fields
568 static int compute_muxer_pkt_fields(AVFormatContext *s, AVStream *st, AVPacket *pkt)
569 {
570  int delay = FFMAX(st->codecpar->video_delay, st->internal->avctx->max_b_frames > 0);
571  int num, den, i;
572  int frame_size;
573 
574  if (!s->internal->missing_ts_warning &&
575  !(s->oformat->flags & AVFMT_NOTIMESTAMPS) &&
577  (pkt->pts == AV_NOPTS_VALUE || pkt->dts == AV_NOPTS_VALUE)) {
579  "Timestamps are unset in a packet for stream %d. "
580  "This is deprecated and will stop working in the future. "
581  "Fix your code to set the timestamps properly\n", st->index);
582  s->internal->missing_ts_warning = 1;
583  }
584 
585  if (s->debug & FF_FDEBUG_TS)
586  av_log(s, AV_LOG_TRACE, "compute_muxer_pkt_fields: pts:%s dts:%s cur_dts:%s b:%d size:%d st:%d\n",
587  av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts), delay, pkt->size, pkt->stream_index);
588 
589  if (pkt->duration < 0 && st->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE) {
590  av_log(s, AV_LOG_WARNING, "Packet with invalid duration %"PRId64" in stream %d\n",
591  pkt->duration, pkt->stream_index);
592  pkt->duration = 0;
593  }
594 
595  /* duration field */
596  if (pkt->duration == 0) {
597  ff_compute_frame_duration(s, &num, &den, st, NULL, pkt);
598  if (den && num) {
599  pkt->duration = av_rescale(1, num * (int64_t)st->time_base.den * st->codec->ticks_per_frame, den * (int64_t)st->time_base.num);
600  }
601  }
602 
603  if (pkt->pts == AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE && delay == 0)
604  pkt->pts = pkt->dts;
605 
606  //XXX/FIXME this is a temporary hack until all encoders output pts
607  if ((pkt->pts == 0 || pkt->pts == AV_NOPTS_VALUE) && pkt->dts == AV_NOPTS_VALUE && !delay) {
608  static int warned;
609  if (!warned) {
610  av_log(s, AV_LOG_WARNING, "Encoder did not produce proper pts, making some up.\n");
611  warned = 1;
612  }
613  pkt->dts =
614 // pkt->pts= st->cur_dts;
615  pkt->pts = st->priv_pts->val;
616  }
617 
618  //calculate dts from pts
619  if (pkt->pts != AV_NOPTS_VALUE && pkt->dts == AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY) {
620  st->pts_buffer[0] = pkt->pts;
621  for (i = 1; i < delay + 1 && st->pts_buffer[i] == AV_NOPTS_VALUE; i++)
622  st->pts_buffer[i] = pkt->pts + (i - delay - 1) * pkt->duration;
623  for (i = 0; i<delay && st->pts_buffer[i] > st->pts_buffer[i + 1]; i++)
624  FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i + 1]);
625 
626  pkt->dts = st->pts_buffer[0];
627  }
628 
629  if (st->cur_dts && st->cur_dts != AV_NOPTS_VALUE &&
630  ((!(s->oformat->flags & AVFMT_TS_NONSTRICT) &&
633  st->cur_dts >= pkt->dts) || st->cur_dts > pkt->dts)) {
634  av_log(s, AV_LOG_ERROR,
635  "Application provided invalid, non monotonically increasing dts to muxer in stream %d: %s >= %s\n",
636  st->index, av_ts2str(st->cur_dts), av_ts2str(pkt->dts));
637  return AVERROR(EINVAL);
638  }
639  if (pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts < pkt->dts) {
640  av_log(s, AV_LOG_ERROR,
641  "pts (%s) < dts (%s) in stream %d\n",
642  av_ts2str(pkt->pts), av_ts2str(pkt->dts),
643  st->index);
644  return AVERROR(EINVAL);
645  }
646 
647  if (s->debug & FF_FDEBUG_TS)
648  av_log(s, AV_LOG_TRACE, "av_write_frame: pts2:%s dts2:%s\n",
649  av_ts2str(pkt->pts), av_ts2str(pkt->dts));
650 
651  st->cur_dts = pkt->dts;
652  st->priv_pts->val = pkt->dts;
653 
654  /* update pts */
655  switch (st->codecpar->codec_type) {
656  case AVMEDIA_TYPE_AUDIO:
657  frame_size = (pkt->flags & AV_PKT_FLAG_UNCODED_FRAME) ?
658  ((AVFrame *)pkt->data)->nb_samples :
659  av_get_audio_frame_duration(st->codec, pkt->size);
660 
661  /* HACK/FIXME, we skip the initial 0 size packets as they are most
662  * likely equal to the encoder delay, but it would be better if we
663  * had the real timestamps from the encoder */
664  if (frame_size >= 0 && (pkt->size || st->priv_pts->num != st->priv_pts->den >> 1 || st->priv_pts->val)) {
665  frac_add(st->priv_pts, (int64_t)st->time_base.den * frame_size);
666  }
667  break;
668  case AVMEDIA_TYPE_VIDEO:
669  frac_add(st->priv_pts, (int64_t)st->time_base.den * st->time_base.num);
670  break;
671  }
672  return 0;
673 }
675 #endif
676 
677 /**
678  * Make timestamps non negative, move side data from payload to internal struct, call muxer, and restore
679  * sidedata.
680  *
681  * FIXME: this function should NEVER get undefined pts/dts beside when the
682  * AVFMT_NOTIMESTAMPS is set.
683  * Those additional safety checks should be dropped once the correct checks
684  * are set in the callers.
685  */
687 {
688  int ret, did_split;
689  int64_t pts_backup, dts_backup;
690 
691  pts_backup = pkt->pts;
692  dts_backup = pkt->dts;
693 
694  // If the timestamp offsetting below is adjusted, adjust
695  // ff_interleaved_peek similarly.
696  if (s->output_ts_offset) {
697  AVStream *st = s->streams[pkt->stream_index];
699 
700  if (pkt->dts != AV_NOPTS_VALUE)
701  pkt->dts += offset;
702  if (pkt->pts != AV_NOPTS_VALUE)
703  pkt->pts += offset;
704  }
705 
706  if (s->avoid_negative_ts > 0) {
707  AVStream *st = s->streams[pkt->stream_index];
708  int64_t offset = st->mux_ts_offset;
709  int64_t ts = s->internal->avoid_negative_ts_use_pts ? pkt->pts : pkt->dts;
710 
711  if (s->internal->offset == AV_NOPTS_VALUE && ts != AV_NOPTS_VALUE &&
712  (ts < 0 || s->avoid_negative_ts == AVFMT_AVOID_NEG_TS_MAKE_ZERO)) {
713  s->internal->offset = -ts;
715  }
716 
717  if (s->internal->offset != AV_NOPTS_VALUE && !offset) {
718  offset = st->mux_ts_offset =
721  st->time_base,
722  AV_ROUND_UP);
723  }
724 
725  if (pkt->dts != AV_NOPTS_VALUE)
726  pkt->dts += offset;
727  if (pkt->pts != AV_NOPTS_VALUE)
728  pkt->pts += offset;
729 
731  if (pkt->pts != AV_NOPTS_VALUE && pkt->pts < 0) {
732  av_log(s, AV_LOG_WARNING, "failed to avoid negative "
733  "pts %s in stream %d.\n"
734  "Try -avoid_negative_ts 1 as a possible workaround.\n",
735  av_ts2str(pkt->dts),
736  pkt->stream_index
737  );
738  }
739  } else {
740  av_assert2(pkt->dts == AV_NOPTS_VALUE || pkt->dts >= 0 || s->max_interleave_delta > 0);
741  if (pkt->dts != AV_NOPTS_VALUE && pkt->dts < 0) {
743  "Packets poorly interleaved, failed to avoid negative "
744  "timestamp %s in stream %d.\n"
745  "Try -max_interleave_delta 0 as a possible workaround.\n",
746  av_ts2str(pkt->dts),
747  pkt->stream_index
748  );
749  }
750  }
751  }
752 
753 #if FF_API_LAVF_MERGE_SD
755  did_split = av_packet_split_side_data(pkt);
757 #endif
758 
759  if (!s->internal->header_written) {
761  if (ret < 0)
762  goto fail;
763  }
764 
765  if ((pkt->flags & AV_PKT_FLAG_UNCODED_FRAME)) {
766  AVFrame *frame = (AVFrame *)pkt->data;
768  ret = s->oformat->write_uncoded_frame(s, pkt->stream_index, &frame, 0);
769  av_frame_free(&frame);
770  } else {
771  ret = s->oformat->write_packet(s, pkt);
772  }
773 
774  if (s->pb && ret >= 0) {
776  avio_flush(s->pb);
777  if (s->pb->error < 0)
778  ret = s->pb->error;
779  }
780 
781 fail:
782 #if FF_API_LAVF_MERGE_SD
784  if (did_split)
787 #endif
788 
789  if (ret < 0) {
790  pkt->pts = pts_backup;
791  pkt->dts = dts_backup;
792  }
793 
794  return ret;
795 }
796 
798 {
799  if (!pkt)
800  return 0;
801 
802  if (pkt->stream_index < 0 || pkt->stream_index >= s->nb_streams) {
803  av_log(s, AV_LOG_ERROR, "Invalid packet stream index: %d\n",
804  pkt->stream_index);
805  return AVERROR(EINVAL);
806  }
807 
809  av_log(s, AV_LOG_ERROR, "Received a packet for an attachment stream.\n");
810  return AVERROR(EINVAL);
811  }
812 
813  return 0;
814 }
815 
817 {
818  int ret;
819 
820  ret = check_packet(s, pkt);
821  if (ret < 0)
822  return ret;
823 
824 #if !FF_API_COMPUTE_PKT_FIELDS2 || !FF_API_LAVF_AVCTX
825  /* sanitize the timestamps */
826  if (!(s->oformat->flags & AVFMT_NOTIMESTAMPS)) {
827  AVStream *st = s->streams[pkt->stream_index];
828 
829  /* when there is no reordering (so dts is equal to pts), but
830  * only one of them is set, set the other as well */
831  if (!st->internal->reorder) {
832  if (pkt->pts == AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE)
833  pkt->pts = pkt->dts;
834  if (pkt->dts == AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE)
835  pkt->dts = pkt->pts;
836  }
837 
838  /* check that the timestamps are set */
839  if (pkt->pts == AV_NOPTS_VALUE || pkt->dts == AV_NOPTS_VALUE) {
840  av_log(s, AV_LOG_ERROR,
841  "Timestamps are unset in a packet for stream %d\n", st->index);
842  return AVERROR(EINVAL);
843  }
844 
845  /* check that the dts are increasing (or at least non-decreasing,
846  * if the format allows it */
847  if (st->cur_dts != AV_NOPTS_VALUE &&
848  ((!(s->oformat->flags & AVFMT_TS_NONSTRICT) && st->cur_dts >= pkt->dts) ||
849  st->cur_dts > pkt->dts)) {
850  av_log(s, AV_LOG_ERROR,
851  "Application provided invalid, non monotonically increasing "
852  "dts to muxer in stream %d: %" PRId64 " >= %" PRId64 "\n",
853  st->index, st->cur_dts, pkt->dts);
854  return AVERROR(EINVAL);
855  }
856 
857  if (pkt->pts < pkt->dts) {
858  av_log(s, AV_LOG_ERROR, "pts %" PRId64 " < dts %" PRId64 " in stream %d\n",
859  pkt->pts, pkt->dts, st->index);
860  return AVERROR(EINVAL);
861  }
862  }
863 #endif
864 
865  return 0;
866 }
867 
869  AVStream *st = s->streams[pkt->stream_index];
870  int i, ret;
871 
872  if (!(s->flags & AVFMT_FLAG_AUTO_BSF))
873  return 1;
874 
875  if (s->oformat->check_bitstream) {
876  if (!st->internal->bitstream_checked) {
877  if ((ret = s->oformat->check_bitstream(s, pkt)) < 0)
878  return ret;
879  else if (ret == 1)
880  st->internal->bitstream_checked = 1;
881  }
882  }
883 
884 #if FF_API_LAVF_MERGE_SD
886  if (st->internal->nb_bsfcs) {
887  ret = av_packet_split_side_data(pkt);
888  if (ret < 0)
889  av_log(s, AV_LOG_WARNING, "Failed to split side data before bitstream filter\n");
890  }
892 #endif
893 
894  for (i = 0; i < st->internal->nb_bsfcs; i++) {
895  AVBSFContext *ctx = st->internal->bsfcs[i];
896  if (i > 0) {
897  AVBSFContext* prev_ctx = st->internal->bsfcs[i - 1];
898  if (prev_ctx->par_out->extradata_size != ctx->par_in->extradata_size) {
899  if ((ret = avcodec_parameters_copy(ctx->par_in, prev_ctx->par_out)) < 0)
900  return ret;
901  }
902  }
903  // TODO: when any bitstream filter requires flushing at EOF, we'll need to
904  // flush each stream's BSF chain on write_trailer.
905  if ((ret = av_bsf_send_packet(ctx, pkt)) < 0) {
906  av_log(ctx, AV_LOG_ERROR,
907  "Failed to send packet to filter %s for stream %d\n",
908  ctx->filter->name, pkt->stream_index);
909  return ret;
910  }
911  // TODO: when any automatically-added bitstream filter is generating multiple
912  // output packets for a single input one, we'll need to call this in a loop
913  // and write each output packet.
914  if ((ret = av_bsf_receive_packet(ctx, pkt)) < 0) {
915  if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
916  return 0;
917  av_log(ctx, AV_LOG_ERROR,
918  "Failed to send packet to filter %s for stream %d\n",
919  ctx->filter->name, pkt->stream_index);
920  return ret;
921  }
922  if (i == st->internal->nb_bsfcs - 1) {
923  if (ctx->par_out->extradata_size != st->codecpar->extradata_size) {
924  if ((ret = avcodec_parameters_copy(st->codecpar, ctx->par_out)) < 0)
925  return ret;
926  }
927  }
928  }
929  return 1;
930 }
931 
933 {
934  int ret;
935 
936  ret = prepare_input_packet(s, pkt);
937  if (ret < 0)
938  return ret;
939 
940  if (!pkt) {
941  if (s->oformat->flags & AVFMT_ALLOW_FLUSH) {
942  if (!s->internal->header_written) {
944  if (ret < 0)
945  return ret;
946  }
947  ret = s->oformat->write_packet(s, NULL);
948  if (s->flush_packets && s->pb && s->pb->error >= 0 && s->flags & AVFMT_FLAG_FLUSH_PACKETS)
949  avio_flush(s->pb);
950  if (ret >= 0 && s->pb && s->pb->error < 0)
951  ret = s->pb->error;
952  return ret;
953  }
954  return 1;
955  }
956 
957  ret = do_packet_auto_bsf(s, pkt);
958  if (ret <= 0)
959  return ret;
960 
961 #if FF_API_COMPUTE_PKT_FIELDS2 && FF_API_LAVF_AVCTX
962  ret = compute_muxer_pkt_fields(s, s->streams[pkt->stream_index], pkt);
963 
964  if (ret < 0 && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
965  return ret;
966 #endif
967 
968  ret = write_packet(s, pkt);
969  if (ret >= 0 && s->pb && s->pb->error < 0)
970  ret = s->pb->error;
971 
972  if (ret >= 0)
973  s->streams[pkt->stream_index]->nb_frames++;
974  return ret;
975 }
976 
977 #define CHUNK_START 0x1000
978 
980  int (*compare)(AVFormatContext *, AVPacket *, AVPacket *))
981 {
982  int ret;
983  AVPacketList **next_point, *this_pktl;
984  AVStream *st = s->streams[pkt->stream_index];
985  int chunked = s->max_chunk_size || s->max_chunk_duration;
986 
987  this_pktl = av_mallocz(sizeof(AVPacketList));
988  if (!this_pktl)
989  return AVERROR(ENOMEM);
990  if ((pkt->flags & AV_PKT_FLAG_UNCODED_FRAME)) {
992  av_assert0(((AVFrame *)pkt->data)->buf);
993  this_pktl->pkt = *pkt;
994  pkt->buf = NULL;
995  pkt->side_data = NULL;
996  pkt->side_data_elems = 0;
997  } else {
998  if ((ret = av_packet_ref(&this_pktl->pkt, pkt)) < 0) {
999  av_free(this_pktl);
1000  return ret;
1001  }
1002  }
1003 
1004  if (s->streams[pkt->stream_index]->last_in_packet_buffer) {
1005  next_point = &(st->last_in_packet_buffer->next);
1006  } else {
1007  next_point = &s->internal->packet_buffer;
1008  }
1009 
1010  if (chunked) {
1012  st->interleaver_chunk_size += pkt->size;
1015  || (max && st->interleaver_chunk_duration > max)) {
1016  st->interleaver_chunk_size = 0;
1017  this_pktl->pkt.flags |= CHUNK_START;
1018  if (max && st->interleaver_chunk_duration > max) {
1019  int64_t syncoffset = (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)*max/2;
1020  int64_t syncto = av_rescale(pkt->dts + syncoffset, 1, max)*max - syncoffset;
1021 
1022  st->interleaver_chunk_duration += (pkt->dts - syncto)/8 - max;
1023  } else
1025  }
1026  }
1027  if (*next_point) {
1028  if (chunked && !(this_pktl->pkt.flags & CHUNK_START))
1029  goto next_non_null;
1030 
1031  if (compare(s, &s->internal->packet_buffer_end->pkt, pkt)) {
1032  while ( *next_point
1033  && ((chunked && !((*next_point)->pkt.flags&CHUNK_START))
1034  || !compare(s, &(*next_point)->pkt, pkt)))
1035  next_point = &(*next_point)->next;
1036  if (*next_point)
1037  goto next_non_null;
1038  } else {
1039  next_point = &(s->internal->packet_buffer_end->next);
1040  }
1041  }
1042  av_assert1(!*next_point);
1043 
1044  s->internal->packet_buffer_end = this_pktl;
1045 next_non_null:
1046 
1047  this_pktl->next = *next_point;
1048 
1050  *next_point = this_pktl;
1051 
1052  av_packet_unref(pkt);
1053 
1054  return 0;
1055 }
1056 
1058  AVPacket *pkt)
1059 {
1060  AVStream *st = s->streams[pkt->stream_index];
1061  AVStream *st2 = s->streams[next->stream_index];
1062  int comp = av_compare_ts(next->dts, st2->time_base, pkt->dts,
1063  st->time_base);
1065  int64_t ts = av_rescale_q(pkt ->dts, st ->time_base, AV_TIME_BASE_Q) - s->audio_preload*(st ->codecpar->codec_type == AVMEDIA_TYPE_AUDIO);
1066  int64_t ts2= av_rescale_q(next->dts, st2->time_base, AV_TIME_BASE_Q) - s->audio_preload*(st2->codecpar->codec_type == AVMEDIA_TYPE_AUDIO);
1067  if (ts == ts2) {
1068  ts= ( pkt ->dts* st->time_base.num*AV_TIME_BASE - s->audio_preload*(int64_t)(st ->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)* st->time_base.den)*st2->time_base.den
1069  -( next->dts*st2->time_base.num*AV_TIME_BASE - s->audio_preload*(int64_t)(st2->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)*st2->time_base.den)* st->time_base.den;
1070  ts2=0;
1071  }
1072  comp= (ts>ts2) - (ts<ts2);
1073  }
1074 
1075  if (comp == 0)
1076  return pkt->stream_index < next->stream_index;
1077  return comp > 0;
1078 }
1079 
1081  AVPacket *pkt, int flush)
1082 {
1083  AVPacketList *pktl;
1084  int stream_count = 0;
1085  int noninterleaved_count = 0;
1086  int i, ret;
1087  int eof = flush;
1088 
1089  if (pkt) {
1090  if ((ret = ff_interleave_add_packet(s, pkt, interleave_compare_dts)) < 0)
1091  return ret;
1092  }
1093 
1094  for (i = 0; i < s->nb_streams; i++) {
1095  if (s->streams[i]->last_in_packet_buffer) {
1096  ++stream_count;
1097  } else if (s->streams[i]->codecpar->codec_type != AVMEDIA_TYPE_ATTACHMENT &&
1100  ++noninterleaved_count;
1101  }
1102  }
1103 
1104  if (s->internal->nb_interleaved_streams == stream_count)
1105  flush = 1;
1106 
1107  if (s->max_interleave_delta > 0 &&
1108  s->internal->packet_buffer &&
1109  !flush &&
1110  s->internal->nb_interleaved_streams == stream_count+noninterleaved_count
1111  ) {
1112  AVPacket *top_pkt = &s->internal->packet_buffer->pkt;
1113  int64_t delta_dts = INT64_MIN;
1114  int64_t top_dts = av_rescale_q(top_pkt->dts,
1115  s->streams[top_pkt->stream_index]->time_base,
1116  AV_TIME_BASE_Q);
1117 
1118  for (i = 0; i < s->nb_streams; i++) {
1119  int64_t last_dts;
1120  const AVPacketList *last = s->streams[i]->last_in_packet_buffer;
1121 
1122  if (!last)
1123  continue;
1124 
1125  last_dts = av_rescale_q(last->pkt.dts,
1126  s->streams[i]->time_base,
1127  AV_TIME_BASE_Q);
1128  delta_dts = FFMAX(delta_dts, last_dts - top_dts);
1129  }
1130 
1131  if (delta_dts > s->max_interleave_delta) {
1132  av_log(s, AV_LOG_DEBUG,
1133  "Delay between the first packet and last packet in the "
1134  "muxing queue is %"PRId64" > %"PRId64": forcing output\n",
1135  delta_dts, s->max_interleave_delta);
1136  flush = 1;
1137  }
1138  }
1139 
1140  if (s->internal->packet_buffer &&
1141  eof &&
1142  (s->flags & AVFMT_FLAG_SHORTEST) &&
1144  AVPacket *top_pkt = &s->internal->packet_buffer->pkt;
1145 
1146  s->internal->shortest_end = av_rescale_q(top_pkt->dts,
1147  s->streams[top_pkt->stream_index]->time_base,
1148  AV_TIME_BASE_Q);
1149  }
1150 
1151  if (s->internal->shortest_end != AV_NOPTS_VALUE) {
1152  while (s->internal->packet_buffer) {
1153  AVPacket *top_pkt = &s->internal->packet_buffer->pkt;
1154  AVStream *st;
1155  int64_t top_dts = av_rescale_q(top_pkt->dts,
1156  s->streams[top_pkt->stream_index]->time_base,
1157  AV_TIME_BASE_Q);
1158 
1159  if (s->internal->shortest_end + 1 >= top_dts)
1160  break;
1161 
1162  pktl = s->internal->packet_buffer;
1163  st = s->streams[pktl->pkt.stream_index];
1164 
1165  s->internal->packet_buffer = pktl->next;
1166  if (!s->internal->packet_buffer)
1168 
1169  if (st->last_in_packet_buffer == pktl)
1171 
1172  av_packet_unref(&pktl->pkt);
1173  av_freep(&pktl);
1174  flush = 0;
1175  }
1176  }
1177 
1178  if (stream_count && flush) {
1179  AVStream *st;
1180  pktl = s->internal->packet_buffer;
1181  *out = pktl->pkt;
1182  st = s->streams[out->stream_index];
1183 
1184  s->internal->packet_buffer = pktl->next;
1185  if (!s->internal->packet_buffer)
1187 
1188  if (st->last_in_packet_buffer == pktl)
1190  av_freep(&pktl);
1191 
1192  return 1;
1193  } else {
1194  av_init_packet(out);
1195  return 0;
1196  }
1197 }
1198 
1200  AVPacket *pkt, int add_offset)
1201 {
1202  AVPacketList *pktl = s->internal->packet_buffer;
1203  while (pktl) {
1204  if (pktl->pkt.stream_index == stream) {
1205  *pkt = pktl->pkt;
1206  if (add_offset) {
1207  AVStream *st = s->streams[pkt->stream_index];
1208  int64_t offset = st->mux_ts_offset;
1209 
1210  if (s->output_ts_offset)
1212 
1213  if (pkt->dts != AV_NOPTS_VALUE)
1214  pkt->dts += offset;
1215  if (pkt->pts != AV_NOPTS_VALUE)
1216  pkt->pts += offset;
1217  }
1218  return 0;
1219  }
1220  pktl = pktl->next;
1221  }
1222  return AVERROR(ENOENT);
1223 }
1224 
1225 /**
1226  * Interleave an AVPacket correctly so it can be muxed.
1227  * @param out the interleaved packet will be output here
1228  * @param in the input packet
1229  * @param flush 1 if no further packets are available as input and all
1230  * remaining packets should be output
1231  * @return 1 if a packet was output, 0 if no packet could be output,
1232  * < 0 if an error occurred
1233  */
1235 {
1236  if (s->oformat->interleave_packet) {
1237  int ret = s->oformat->interleave_packet(s, out, in, flush);
1238  if (in)
1239  av_packet_unref(in);
1240  return ret;
1241  } else
1242  return ff_interleave_packet_per_dts(s, out, in, flush);
1243 }
1244 
1246 {
1247  int ret, flush = 0;
1248 
1249  ret = prepare_input_packet(s, pkt);
1250  if (ret < 0)
1251  goto fail;
1252 
1253  if (pkt) {
1254  AVStream *st = s->streams[pkt->stream_index];
1255 
1256  ret = do_packet_auto_bsf(s, pkt);
1257  if (ret == 0)
1258  return 0;
1259  else if (ret < 0)
1260  goto fail;
1261 
1262  if (s->debug & FF_FDEBUG_TS)
1263  av_log(s, AV_LOG_TRACE, "av_interleaved_write_frame size:%d dts:%s pts:%s\n",
1264  pkt->size, av_ts2str(pkt->dts), av_ts2str(pkt->pts));
1265 
1266 #if FF_API_COMPUTE_PKT_FIELDS2 && FF_API_LAVF_AVCTX
1267  if ((ret = compute_muxer_pkt_fields(s, st, pkt)) < 0 && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
1268  goto fail;
1269 #endif
1270 
1271  if (pkt->dts == AV_NOPTS_VALUE && !(s->oformat->flags & AVFMT_NOTIMESTAMPS)) {
1272  ret = AVERROR(EINVAL);
1273  goto fail;
1274  }
1275  } else {
1276  av_log(s, AV_LOG_TRACE, "av_interleaved_write_frame FLUSH\n");
1277  flush = 1;
1278  }
1279 
1280  for (;; ) {
1281  AVPacket opkt;
1282  int ret = interleave_packet(s, &opkt, pkt, flush);
1283  if (pkt) {
1284  memset(pkt, 0, sizeof(*pkt));
1285  av_init_packet(pkt);
1286  pkt = NULL;
1287  }
1288  if (ret <= 0) //FIXME cleanup needed for ret<0 ?
1289  return ret;
1290 
1291  ret = write_packet(s, &opkt);
1292  if (ret >= 0)
1293  s->streams[opkt.stream_index]->nb_frames++;
1294 
1295  av_packet_unref(&opkt);
1296 
1297  if (ret < 0)
1298  return ret;
1299  if(s->pb && s->pb->error)
1300  return s->pb->error;
1301  }
1302 fail:
1303  av_packet_unref(pkt);
1304  return ret;
1305 }
1306 
1308 {
1309  int ret, i;
1310 
1311  for (;; ) {
1312  AVPacket pkt;
1313  ret = interleave_packet(s, &pkt, NULL, 1);
1314  if (ret < 0)
1315  goto fail;
1316  if (!ret)
1317  break;
1318 
1319  ret = write_packet(s, &pkt);
1320  if (ret >= 0)
1321  s->streams[pkt.stream_index]->nb_frames++;
1322 
1323  av_packet_unref(&pkt);
1324 
1325  if (ret < 0)
1326  goto fail;
1327  if(s->pb && s->pb->error)
1328  goto fail;
1329  }
1330 
1331  if (!s->internal->header_written) {
1333  if (ret < 0)
1334  goto fail;
1335  }
1336 
1337 fail:
1338  if (s->internal->header_written && s->oformat->write_trailer) {
1339  if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
1341  if (ret >= 0) {
1342  ret = s->oformat->write_trailer(s);
1343  } else {
1344  s->oformat->write_trailer(s);
1345  }
1346  }
1347 
1348  if (s->oformat->deinit)
1349  s->oformat->deinit(s);
1350 
1351  s->internal->header_written =
1352  s->internal->initialized =
1353  s->internal->streams_initialized = 0;
1354 
1355  if (s->pb)
1356  avio_flush(s->pb);
1357  if (ret == 0)
1358  ret = s->pb ? s->pb->error : 0;
1359  for (i = 0; i < s->nb_streams; i++) {
1360  av_freep(&s->streams[i]->priv_data);
1361  av_freep(&s->streams[i]->index_entries);
1362  }
1363  if (s->oformat->priv_class)
1364  av_opt_free(s->priv_data);
1365  av_freep(&s->priv_data);
1366  return ret;
1367 }
1368 
1369 int av_get_output_timestamp(struct AVFormatContext *s, int stream,
1370  int64_t *dts, int64_t *wall)
1371 {
1372  if (!s->oformat || !s->oformat->get_output_timestamp)
1373  return AVERROR(ENOSYS);
1374  s->oformat->get_output_timestamp(s, stream, dts, wall);
1375  return 0;
1376 }
1377 
1378 int ff_write_chained(AVFormatContext *dst, int dst_stream, AVPacket *pkt,
1380 {
1381  AVPacket local_pkt;
1382  int ret;
1383 
1384  local_pkt = *pkt;
1385  local_pkt.stream_index = dst_stream;
1386  if (pkt->pts != AV_NOPTS_VALUE)
1387  local_pkt.pts = av_rescale_q(pkt->pts,
1388  src->streams[pkt->stream_index]->time_base,
1389  dst->streams[dst_stream]->time_base);
1390  if (pkt->dts != AV_NOPTS_VALUE)
1391  local_pkt.dts = av_rescale_q(pkt->dts,
1392  src->streams[pkt->stream_index]->time_base,
1393  dst->streams[dst_stream]->time_base);
1394  if (pkt->duration)
1395  local_pkt.duration = av_rescale_q(pkt->duration,
1396  src->streams[pkt->stream_index]->time_base,
1397  dst->streams[dst_stream]->time_base);
1398 
1399  if (interleave) ret = av_interleaved_write_frame(dst, &local_pkt);
1400  else ret = av_write_frame(dst, &local_pkt);
1401  pkt->buf = local_pkt.buf;
1402  pkt->side_data = local_pkt.side_data;
1403  pkt->side_data_elems = local_pkt.side_data_elems;
1404  return ret;
1405 }
1406 
1407 static int av_write_uncoded_frame_internal(AVFormatContext *s, int stream_index,
1408  AVFrame *frame, int interleaved)
1409 {
1410  AVPacket pkt, *pktp;
1411 
1412  av_assert0(s->oformat);
1413  if (!s->oformat->write_uncoded_frame)
1414  return AVERROR(ENOSYS);
1415 
1416  if (!frame) {
1417  pktp = NULL;
1418  } else {
1419  pktp = &pkt;
1420  av_init_packet(&pkt);
1421  pkt.data = (void *)frame;
1423  pkt.pts =
1424  pkt.dts = frame->pts;
1425  pkt.duration = frame->pkt_duration;
1426  pkt.stream_index = stream_index;
1428  }
1429 
1430  return interleaved ? av_interleaved_write_frame(s, pktp) :
1431  av_write_frame(s, pktp);
1432 }
1433 
1434 int av_write_uncoded_frame(AVFormatContext *s, int stream_index,
1435  AVFrame *frame)
1436 {
1437  return av_write_uncoded_frame_internal(s, stream_index, frame, 0);
1438 }
1439 
1441  AVFrame *frame)
1442 {
1443  return av_write_uncoded_frame_internal(s, stream_index, frame, 1);
1444 }
1445 
1447 {
1448  av_assert0(s->oformat);
1449  if (!s->oformat->write_uncoded_frame)
1450  return AVERROR(ENOSYS);
1451  return s->oformat->write_uncoded_frame(s, stream_index, NULL,
1453 }
#define AV_CODEC_PROP_REORDER
Codec supports frame reordering.
Definition: avcodec.h:752
static float compare(const AVFrame *haystack, const AVFrame *obj, int offx, int offy)
Definition: vf_find_rect.c:105
int64_t interleaver_chunk_size
Definition: avformat.h:1117
enum AVChromaLocation chroma_location
Definition: avcodec.h:4164
attribute_deprecated int av_packet_split_side_data(AVPacket *pkt)
Definition: avpacket.c:422
#define NULL
Definition: coverity.c:32
const char const char void * val
Definition: avisynth_c.h:771
enum AVFieldOrder field_order
Video only.
Definition: avcodec.h:4155
int audio_preload
Audio preload in microseconds.
Definition: avformat.h:1675
const char * s
Definition: avisynth_c.h:768
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
AVCodecParameters * par_out
Parameters of the output stream.
Definition: avcodec.h:5872
static int check_packet(AVFormatContext *s, AVPacket *pkt)
Definition: mux.c:797
enum AVCodecID id
Definition: internal.h:45
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2333
MPEG-2/4 4:2:0, H.264 default for 4:2:0.
Definition: pixfmt.h:500
This structure describes decoded (raw) audio or video data.
Definition: frame.h:193
int av_interleaved_write_frame(AVFormatContext *s, AVPacket *pkt)
Write a packet to an output media file ensuring correct interleaving.
Definition: mux.c:1245
int bitstream_checked
Whether or not check_bitstream should still be run on each packet.
Definition: internal.h:168
static void flush(AVCodecContext *avctx)
int(* init)(struct AVFormatContext *)
Initialize format.
Definition: avformat.h:634
int flush_packets
Flush the I/O context after each packet.
Definition: avformat.h:1742
int av_write_frame(AVFormatContext *s, AVPacket *pkt)
Write a packet to an output media file.
Definition: mux.c:932
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
void(* deinit)(struct AVFormatContext *)
Deinitialize format.
Definition: avformat.h:643
int reorder
Set to 1 if the codec allows reordering, so pts can be different from dts.
Definition: internal.h:155
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:4727
int64_t pts_buffer[MAX_REORDER_DELAY+1]
Definition: avformat.h:1090
const char * desc
Definition: nvenc.c:60
#define AVSTREAM_INIT_IN_INIT_OUTPUT
stream parameters initialized in avformat_init_output
Definition: avformat.h:2434
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:2018
AVRational sample_aspect_ratio
Video only.
Definition: avcodec.h:4150
struct FFFrac * priv_pts
Definition: avformat.h:1235
void av_opt_set_defaults(void *s)
Set the values of all AVOption fields to their default values.
Definition: opt.c:1291
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: avcodec.h:4074
const struct AVBitStreamFilter * filter
The bitstream filter this context is an instance of.
Definition: avcodec.h:5847
AVRational sample_aspect_ratio
sample aspect ratio (0 if unknown)
Definition: avformat.h:959
int num
Numerator.
Definition: rational.h:59
The bitstream filter state.
Definition: avcodec.h:5838
int index
stream index in AVFormatContext
Definition: avformat.h:890
int size
Definition: avcodec.h:1658
int ff_interleave_packet_per_dts(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
Interleave a packet per dts in an output media file.
Definition: mux.c:1080
AVIndexEntry * index_entries
Only used if the format does not support seeking natively.
Definition: avformat.h:1092
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:649
AVFormatInternal * internal
An opaque field for libavformat internal usage.
Definition: avformat.h:1780
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:1369
int64_t offset
Offset to remap timestamps to be non-negative.
Definition: internal.h:108
void * priv_data
Definition: avformat.h:904
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:222
int avoid_negative_ts_use_pts
Definition: internal.h:121
int(* write_packet)(struct AVFormatContext *, AVPacket *pkt)
Write a packet.
Definition: avformat.h:575
static AVPacket pkt
int av_write_uncoded_frame_query(AVFormatContext *s, int stream_index)
Test whether a muxer supports uncoded frame.
Definition: mux.c:1446
#define src
Definition: vp8dsp.c:254
#define AVFMT_ALLOW_FLUSH
Format allows flushing.
Definition: avformat.h:495
static int av_write_uncoded_frame_internal(AVFormatContext *s, int stream_index, AVFrame *frame, int interleaved)
Definition: mux.c:1407
int strict_std_compliance
Allow non-standard and experimental extension.
Definition: avformat.h:1635
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:496
This struct describes the properties of an encoded stream.
Definition: avcodec.h:4066
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:1378
Trailer data, which doesn't contain actual content, but only for finalizing the output file...
Definition: avio.h:140
Format I/O context.
Definition: avformat.h:1349
int64_t output_ts_offset
Output timestamp offset, in microseconds.
Definition: avformat.h:1844
int64_t cur_dts
Definition: avformat.h:1066
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
internal metadata API header see avformat.h or the public API!
#define CHUNK_START
Definition: mux.c:977
Public dictionary API.
int av_bsf_receive_packet(AVBSFContext *ctx, AVPacket *pkt)
Retrieve a filtered packet.
Definition: bsf.c:196
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:543
Round toward +infinity.
Definition: mathematics.h:83
Opaque data information usually continuous.
Definition: avutil.h:203
int width
Video only.
Definition: avcodec.h:4140
#define av_assert2(cond)
assert() equivalent, that does lie in speed critical code.
Definition: avassert.h:64
attribute_deprecated int av_packet_merge_side_data(AVPacket *pkt)
Definition: avpacket.c:387
AVOptions.
timestamp utils, mostly useful for debugging/logging purposes
Query whether the feature is possible on this stream.
Definition: internal.h:586
#define AV_LOG_TRACE
Extremely verbose debugging, useful for libav* development.
Definition: log.h:202
AVPacket pkt
Definition: avformat.h:1970
int priv_data_size
size of private data so that it can be allocated in the wrapper
Definition: avformat.h:565
The exact value of the fractional number is: 'val + num / den'.
Definition: internal.h:61
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
Definition: avcodec.h:1675
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:277
void avio_write_marker(AVIOContext *s, int64_t time, enum AVIODataMarkerType type)
Mark the written bytestream as a specific type.
Definition: aviobuf.c:487
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1417
static AVFrame * frame
AVFormatContext * avformat_alloc_context(void)
Allocate an AVFormatContext.
Definition: options.c:132
const char * name
Definition: avcodec.h:5888
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:909
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:1460
uint8_t * data
Definition: avcodec.h:1657
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:1629
int header_written
Whether or not a header has already been written.
Definition: internal.h:126
uint32_t tag
Definition: movenc.c:1446
#define AVERROR_EOF
End of file.
Definition: error.h:55
int write_header_ret
Definition: internal.h:127
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:78
#define AVSTREAM_INIT_IN_WRITE_HEADER
stream parameters initialized in avformat_write_header
Definition: avformat.h:2433
static int interleave_packet(AVFormatContext *s, AVPacket *out, AVPacket *in, int flush)
Interleave an AVPacket correctly so it can be muxed.
Definition: mux.c:1234
#define AVFMT_FLAG_BITEXACT
When muxing, try to avoid writing any random/volatile data to the output.
Definition: avformat.h:1477
const OptionDef options[]
Definition: ffserver.c:3952
int avformat_alloc_output_context2(AVFormatContext **avctx, AVOutputFormat *oformat, const char *format, const char *filename)
Allocate an AVFormatContext for an output format.
Definition: mux.c:148
#define av_log(a,...)
struct AVOutputFormat * oformat
The output container format.
Definition: avformat.h:1368
int av_packet_ref(AVPacket *dst, const AVPacket *src)
Setup a new reference to the data described by a given packet.
Definition: avpacket.c:585
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 AVFMT_FLAG_FLUSH_PACKETS
Flush the AVIOContext every packet.
Definition: avformat.h:1470
int(* write_uncoded_frame)(struct AVFormatContext *, int stream_index, AVFrame **frame, unsigned flags)
Write an uncoded AVFrame.
Definition: avformat.h:607
AVCodecID
Identify the syntax and semantics of the bitstream.
Definition: avcodec.h:214
int avcodec_parameters_copy(AVCodecParameters *dst, const AVCodecParameters *src)
Copy the contents of src to dst.
Definition: utils.c:2279
#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:1567
int av_get_bits_per_sample(enum AVCodecID codec_id)
Return codec bits per sample.
Definition: utils.c:1662
uint8_t log2_chroma_h
Amount to shift the luma height right to find the chroma height.
Definition: pixdesc.h:101
static int validate_codec_tag(AVFormatContext *s, AVStream *st)
Definition: mux.c:201
#define AVERROR(e)
Definition: error.h:43
#define AV_PKT_FLAG_UNCODED_FRAME
Definition: mux.c:556
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:163
int(* write_header)(struct AVFormatContext *)
Definition: avformat.h:567
int video_delay
Video only.
Definition: avcodec.h:4169
#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: avcodec.h:4070
AVBufferRef * buf
A reference to the reference-counted buffer where the packet data is stored.
Definition: avcodec.h:1640
simple assert() macros that are a bit more flexible than ISO C assert().
int side_data_elems
Definition: avcodec.h:1669
static const uint8_t offset[127][2]
Definition: vf_spp.c:92
#define FFMAX(a, b)
Definition: common.h:94
int64_t val
Definition: internal.h:62
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:90
int flags
A combination of AV_PKT_FLAG values.
Definition: avcodec.h:1663
const AVCodecDescriptor * avcodec_descriptor_get(enum AVCodecID id)
Definition: codec_desc.c:3085
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 extradata_size
Size of the extradata content in bytes.
Definition: avcodec.h:4092
int props
Codec properties, a combination of AV_CODEC_PROP_* flags.
Definition: avcodec.h:714
static int write_packet(AVFormatContext *s, AVPacket *pkt)
Make timestamps non negative, move side data from payload to internal struct, call muxer...
Definition: mux.c:686
int streams_initialized
Whether or not avformat_init_output fully initialized streams.
Definition: internal.h:142
common internal API header
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
Definition: avformat.h:1405
AVBSFContext ** bsfcs
bitstream filters to run on stream
Definition: internal.h:162
#define LIBAVFORMAT_IDENT
Definition: version.h:46
int block_align
Audio only.
Definition: avcodec.h:4191
This is any, unlabelled data.
Definition: avio.h:135
int void avio_flush(AVIOContext *s)
Force flushing of buffered data.
Definition: aviobuf.c:229
#define AV_CODEC_FLAG_BITEXACT
Use only bitexact stuff (except (I)DCT).
Definition: avcodec.h:924
char filename[1024]
input or output filename
Definition: avformat.h:1425
#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:132
#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:519
#define AV_OPT_SEARCH_CHILDREN
Search in possible children of the given object first.
Definition: opt.h:557
ITU-R 601, SMPTE 274M 296M S314M(DV 4:1:1), mpeg2 4:2:2.
Definition: pixfmt.h:502
int av_bsf_send_packet(AVBSFContext *ctx, AVPacket *pkt)
Submit a packet for filtering.
Definition: bsf.c:175
internal header for RIFF based (de)muxers do NOT include this in end user applications ...
AVFormatContext * ctx
Definition: movenc.c:48
int avoid_negative_ts
Avoid negative timestamps during muxing.
Definition: avformat.h:1658
static void frac_init(FFFrac *f, int64_t val, int64_t num, int64_t den)
f = val + (num / den) + 0.5.
Definition: mux.c:64
int n
Definition: avisynth_c.h:684
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:98
Usually treated as AVMEDIA_TYPE_DATA.
Definition: avutil.h:200
static int init_muxer(AVFormatContext *s, AVDictionary **options)
Definition: mux.c:235
Opaque data information usually sparse.
Definition: avutil.h:205
int64_t num
Definition: internal.h:62
void(* get_output_timestamp)(struct AVFormatContext *s, int stream, int64_t *dts, int64_t *wall)
Definition: avformat.h:591
const AVClass * priv_class
AVClass for the private context.
Definition: avformat.h:552
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:491
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:1564
preferred ID for MPEG-1/2 video decoding
Definition: avcodec.h:219
static void error(const char *err)
#define AV_DISPOSITION_ATTACHED_PIC
The stream is stored in the file as an attached picture/"cover art" (e.g.
Definition: avformat.h:859
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:889
#define AVFMT_NOTIMESTAMPS
Format does not need / have any timestamps.
Definition: avformat.h:486
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:1199
#define FF_FDEBUG_TS
Definition: avformat.h:1611
int frame_size
Definition: mxfenc.c:1820
AVStreamInternal * internal
An opaque field for libavformat internal usage.
Definition: avformat.h:1241
int64_t pkt_duration
duration of the corresponding packet, expressed in AVStream->time_base units, 0 if unknown...
Definition: frame.h:464
int debug
Flags to enable debugging.
Definition: avformat.h:1610
#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:1589
AVIOContext * pb
I/O context.
Definition: avformat.h:1391
const struct AVCodecTag *const * codec_tag
List of supported codec_id-codec_tag pairs, ordered by "better choice first".
Definition: avformat.h:549
int64_t den
Definition: internal.h:62
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:576
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(constint16_t *) pi >>8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(constint32_t *) pi >>24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(constfloat *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(constfloat *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(constfloat *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(constdouble *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(constdouble *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(constdouble *) pi *(1U<< 31))))#defineSET_CONV_FUNC_GROUP(ofmt, ifmt) staticvoidset_generic_function(AudioConvert *ac){}voidff_audio_convert_free(AudioConvert **ac){if(!*ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);}AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enumAVSampleFormatout_fmt, enumAVSampleFormatin_fmt, intchannels, intsample_rate, intapply_map){AudioConvert *ac;intin_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) returnNULL;ac->avr=avr;ac->out_fmt=out_fmt;ac->in_fmt=in_fmt;ac->channels=channels;ac->apply_map=apply_map;if(avr->dither_method!=AV_RESAMPLE_DITHER_NONE &&av_get_packed_sample_fmt(out_fmt)==AV_SAMPLE_FMT_S16 &&av_get_bytes_per_sample(in_fmt)>2){ac->dc=ff_dither_alloc(avr, out_fmt, in_fmt, channels, sample_rate, apply_map);if(!ac->dc){av_free(ac);returnNULL;}returnac;}in_planar=ff_sample_fmt_is_planar(in_fmt, channels);out_planar=ff_sample_fmt_is_planar(out_fmt, channels);if(in_planar==out_planar){ac->func_type=CONV_FUNC_TYPE_FLAT;ac->planes=in_planar?ac->channels:1;}elseif(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;elseac->func_type=CONV_FUNC_TYPE_DEINTERLEAVE;set_generic_function(ac);if(ARCH_AARCH64) ff_audio_convert_init_aarch64(ac);if(ARCH_ARM) ff_audio_convert_init_arm(ac);if(ARCH_X86) ff_audio_convert_init_x86(ac);returnac;}intff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in){intuse_generic=1;intlen=in->nb_samples;intp;if(ac->dc){av_log(ac->avr, AV_LOG_TRACE,"%dsamples-audio_convert:%sto%s(dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));returnff_convert_dither(ac-> in
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
#define UNCODED_FRAME_PACKET_SIZE
Definition: mux.c:562
int nb_interleaved_streams
Number of streams relevant for interleaving.
Definition: internal.h:71
static const char * format
Definition: movenc.c:47
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:137
#define FF_COMPLIANCE_NORMAL
Definition: avcodec.h:2954
unsigned int avpriv_toupper4(unsigned int x)
Definition: utils.c:2052
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:864
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:2297
int(* interleave_packet)(struct AVFormatContext *, AVPacket *out, AVPacket *in, int flush)
Currently only used to set pixel format if not YUV420P.
Definition: avformat.h:580
enum AVChromaLocation ff_choose_chroma_location(AVFormatContext *s, AVStream *st)
Chooses a timebase for muxing the specified stream.
Definition: mux.c:118
static int do_packet_auto_bsf(AVFormatContext *s, AVPacket *pkt)
Definition: mux.c:868
AVRational ff_choose_timebase(AVFormatContext *s, AVStream *st, int min_precision)
Chooses a timebase for muxing the specified stream.
Definition: mux.c:102
#define AVFMT_AVOID_NEG_TS_AUTO
Enabled when required by target format.
Definition: avformat.h:1659
void avformat_free_context(AVFormatContext *s)
Free an AVFormatContext and all its streams.
Definition: utils.c:4292
#define AVFMT_FLAG_AUTO_BSF
Wait for packet data before writing a header, and add bitstream filters as requested by the muxer...
Definition: avformat.h:1486
int error
contains the error code or 0 if no error happened
Definition: avio.h:236
int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
Return audio frame duration.
Definition: utils.c:1867
misc parsing utilities
static void interleave(short *output, short **input, int channels, int samples)
Definition: resample.c:161
This struct describes the properties of a single codec described by an AVCodecID. ...
Definition: avcodec.h:698
unsigned int tag
Definition: internal.h:46
AVRational offset_timebase
Timebase for the timestamp offset.
Definition: internal.h:113
int sample_rate
Audio only.
Definition: avcodec.h:4184
int64_t interleaver_chunk_duration
Definition: avformat.h:1118
#define AVFMT_AVOID_NEG_TS_MAKE_ZERO
Shift timestamps so that they start at 0.
Definition: avformat.h:1661
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: avcodec.h:1668
int ff_interleave_add_packet(AVFormatContext *s, AVPacket *pkt, int(*compare)(AVFormatContext *, AVPacket *, AVPacket *))
Add packet to AVFormatContext->packet_buffer list, determining its interleaved position using compare...
Definition: mux.c:979
void av_opt_free(void *obj)
Free all allocated objects in obj.
Definition: opt.c:1544
#define FF_DISABLE_DEPRECATION_WARNINGS
Definition: internal.h:83
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:1440
common internal api header.
struct AVPacketList * next
Definition: avformat.h:1971
if(ret< 0)
Definition: vf_mcdeint.c:282
#define AVFMT_NOFILE
Demuxer will use avio_open, no opened file should be provided by the caller.
Definition: avformat.h:478
#define AVFMT_NOSTREAMS
Format does not require any streams.
Definition: avformat.h:491
static int write_header_internal(AVFormatContext *s)
Definition: mux.c:471
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:1691
int disposition
AV_DISPOSITION_* bit field.
Definition: avformat.h:950
static void frac_add(FFFrac *f, int64_t incr)
Fractional addition to f: f = f + (incr / f->den).
Definition: mux.c:82
static int init_pts(AVFormatContext *s)
Definition: mux.c:434
void av_init_packet(AVPacket *pkt)
Initialize optional fields of a packet with default values.
Definition: avpacket.c:33
int64_t nb_frames
number of frames in this stream if known or 0
Definition: avformat.h:948
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:1434
int64_t mux_ts_offset
Timestamp offset added to timestamps before muxing NOT PART OF PUBLIC API.
Definition: avformat.h:1173
#define AVFMT_AVOID_NEG_TS_MAKE_NON_NEGATIVE
Shift timestamps so they are non negative.
Definition: avformat.h:1660
struct AVPacketList * packet_buffer_end
Definition: internal.h:79
#define av_free(p)
static int interleave_compare_dts(AVFormatContext *s, AVPacket *next, AVPacket *pkt)
Definition: mux.c:1057
#define FF_ENABLE_DEPRECATION_WARNINGS
Definition: internal.h:84
#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:1683
void * priv_data
Format private data.
Definition: avformat.h:1377
#define AVFMT_NODIMENSIONS
Format does not need width/height.
Definition: avformat.h:490
int channels
Audio only.
Definition: avcodec.h:4180
AVCodecContext * avctx
The codec context used by avformat_find_stream_info, the parser, etc.
Definition: internal.h:173
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed...
Definition: avcodec.h:1656
int av_write_trailer(AVFormatContext *s)
Write the stream trailer to an output media file and free the file private data.
Definition: mux.c:1307
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:498
unbuffered private I/O API
MPEG-1 4:2:0, JPEG 4:2:0, H.263 4:2:0.
Definition: pixfmt.h:501
AVCodecParameters * codecpar
Definition: avformat.h:1252
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: avcodec.h:4078
#define FFSWAP(type, a, b)
Definition: common.h:99
int stream_index
Definition: avcodec.h:1659
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
Definition: avformat.h:926
#define MKTAG(a, b, c, d)
Definition: common.h:342
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:501
This structure stores compressed data.
Definition: avcodec.h:1634
AVCodecParameters * par_in
Parameters of the input stream.
Definition: avcodec.h:5866
int(* write_trailer)(struct AVFormatContext *)
Definition: avformat.h:576
static int prepare_input_packet(AVFormatContext *s, AVPacket *pkt)
Definition: mux.c:816
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: avcodec.h:1650
struct AVPacketList * last_in_packet_buffer
last packet in packet_buffer for this stream when muxing.
Definition: avformat.h:1087
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:1485
static uint8_t tmp[11]
Definition: aes_ctr.c:26