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matroskaenc.c
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1 /*
2  * Matroska muxer
3  * Copyright (c) 2007 David Conrad
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 <stdint.h>
23 
24 #include "avc.h"
25 #include "hevc.h"
26 #include "avformat.h"
27 #include "avio_internal.h"
28 #include "avlanguage.h"
29 #include "flacenc.h"
30 #include "internal.h"
31 #include "isom.h"
32 #include "matroska.h"
33 #include "riff.h"
34 #include "subtitles.h"
35 #include "vorbiscomment.h"
36 #include "wv.h"
37 
38 #include "libavutil/avstring.h"
40 #include "libavutil/dict.h"
41 #include "libavutil/intfloat.h"
42 #include "libavutil/intreadwrite.h"
43 #include "libavutil/lfg.h"
45 #include "libavutil/mathematics.h"
46 #include "libavutil/opt.h"
47 #include "libavutil/parseutils.h"
48 #include "libavutil/random_seed.h"
49 #include "libavutil/rational.h"
50 #include "libavutil/samplefmt.h"
51 #include "libavutil/sha.h"
52 #include "libavutil/stereo3d.h"
53 
54 #include "libavcodec/xiph.h"
55 #include "libavcodec/mpeg4audio.h"
56 #include "libavcodec/internal.h"
57 
58 typedef struct ebml_master {
59  int64_t pos; ///< absolute offset in the file where the master's elements start
60  int sizebytes; ///< how many bytes were reserved for the size
61 } ebml_master;
62 
63 typedef struct mkv_seekhead_entry {
64  unsigned int elementid;
65  uint64_t segmentpos;
67 
68 typedef struct mkv_seekhead {
69  int64_t filepos;
70  int64_t segment_offset; ///< the file offset to the beginning of the segment
71  int reserved_size; ///< -1 if appending to file
75 } mkv_seekhead;
76 
77 typedef struct mkv_cuepoint {
78  uint64_t pts;
80  int tracknum;
81  int64_t cluster_pos; ///< file offset of the cluster containing the block
82  int64_t relative_pos; ///< relative offset from the position of the cluster containing the block
83  int64_t duration; ///< duration of the block according to time base
84 } mkv_cuepoint;
85 
86 typedef struct mkv_cues {
87  int64_t segment_offset;
90 } mkv_cues;
91 
92 typedef struct mkv_track {
93  int write_dts;
94  int has_cue;
95  int64_t ts_offset;
96 } mkv_track;
97 
98 #define MODE_MATROSKAv2 0x01
99 #define MODE_WEBM 0x02
100 
101 /** Maximum number of tracks allowed in a Matroska file (with track numbers in
102  * range 1 to 126 (inclusive) */
103 #define MAX_TRACKS 126
104 
105 typedef struct MatroskaMuxContext {
106  const AVClass *class;
107  int mode;
110  int64_t segment_offset;
112  int64_t cluster_pos; ///< file offset of the current cluster
113  int64_t cluster_pts;
115  int64_t duration;
119 
121 
124 
127  int64_t cues_pos;
129  int is_dash;
131  int is_live;
132 
135 
137 
140 
143 
144 
145 /** 2 bytes * 3 for EBML IDs, 3 1-byte EBML lengths, 8 bytes for 64 bit
146  * offset, 4 bytes for target EBML ID */
147 #define MAX_SEEKENTRY_SIZE 21
148 
149 /** per-cuepoint-track - 5 1-byte EBML IDs, 5 1-byte EBML sizes, 4
150  * 8-byte uint max */
151 #define MAX_CUETRACKPOS_SIZE 42
152 
153 /** per-cuepoint - 2 1-byte EBML IDs, 2 1-byte EBML sizes, 8-byte uint max */
154 #define MAX_CUEPOINT_SIZE(num_tracks) 12 + MAX_CUETRACKPOS_SIZE * num_tracks
155 
156 /** Seek preroll value for opus */
157 #define OPUS_SEEK_PREROLL 80000000
158 
159 static int ebml_id_size(unsigned int id)
160 {
161  return (av_log2(id + 1) - 1) / 7 + 1;
162 }
163 
164 static void put_ebml_id(AVIOContext *pb, unsigned int id)
165 {
166  int i = ebml_id_size(id);
167  while (i--)
168  avio_w8(pb, (uint8_t)(id >> (i * 8)));
169 }
170 
171 /**
172  * Write an EBML size meaning "unknown size".
173  *
174  * @param bytes The number of bytes the size should occupy (maximum: 8).
175  */
176 static void put_ebml_size_unknown(AVIOContext *pb, int bytes)
177 {
178  av_assert0(bytes <= 8);
179  avio_w8(pb, 0x1ff >> bytes);
180  ffio_fill(pb, 0xff, bytes - 1);
181 }
182 
183 /**
184  * Calculate how many bytes are needed to represent a given number in EBML.
185  */
186 static int ebml_num_size(uint64_t num)
187 {
188  int bytes = 1;
189  while ((num + 1) >> bytes * 7)
190  bytes++;
191  return bytes;
192 }
193 
194 /**
195  * Write a number in EBML variable length format.
196  *
197  * @param bytes The number of bytes that need to be used to write the number.
198  * If zero, any number of bytes can be used.
199  */
200 static void put_ebml_num(AVIOContext *pb, uint64_t num, int bytes)
201 {
202  int i, needed_bytes = ebml_num_size(num);
203 
204  // sizes larger than this are currently undefined in EBML
205  av_assert0(num < (1ULL << 56) - 1);
206 
207  if (bytes == 0)
208  // don't care how many bytes are used, so use the min
209  bytes = needed_bytes;
210  // the bytes needed to write the given size would exceed the bytes
211  // that we need to use, so write unknown size. This shouldn't happen.
212  av_assert0(bytes >= needed_bytes);
213 
214  num |= 1ULL << bytes * 7;
215  for (i = bytes - 1; i >= 0; i--)
216  avio_w8(pb, (uint8_t)(num >> i * 8));
217 }
218 
219 static void put_ebml_uint(AVIOContext *pb, unsigned int elementid, uint64_t val)
220 {
221  int i, bytes = 1;
222  uint64_t tmp = val;
223  while (tmp >>= 8)
224  bytes++;
225 
226  put_ebml_id(pb, elementid);
227  put_ebml_num(pb, bytes, 0);
228  for (i = bytes - 1; i >= 0; i--)
229  avio_w8(pb, (uint8_t)(val >> i * 8));
230 }
231 
232 static void put_ebml_sint(AVIOContext *pb, unsigned int elementid, int64_t val)
233 {
234  int i, bytes = 1;
235  uint64_t tmp = 2*(val < 0 ? val^-1 : val);
236 
237  while (tmp>>=8) bytes++;
238 
239  put_ebml_id(pb, elementid);
240  put_ebml_num(pb, bytes, 0);
241  for (i = bytes - 1; i >= 0; i--)
242  avio_w8(pb, (uint8_t)(val >> i * 8));
243 }
244 
245 static void put_ebml_float(AVIOContext *pb, unsigned int elementid, double val)
246 {
247  put_ebml_id(pb, elementid);
248  put_ebml_num(pb, 8, 0);
249  avio_wb64(pb, av_double2int(val));
250 }
251 
252 static void put_ebml_binary(AVIOContext *pb, unsigned int elementid,
253  const void *buf, int size)
254 {
255  put_ebml_id(pb, elementid);
256  put_ebml_num(pb, size, 0);
257  avio_write(pb, buf, size);
258 }
259 
260 static void put_ebml_string(AVIOContext *pb, unsigned int elementid,
261  const char *str)
262 {
263  put_ebml_binary(pb, elementid, str, strlen(str));
264 }
265 
266 /**
267  * Write a void element of a given size. Useful for reserving space in
268  * the file to be written to later.
269  *
270  * @param size The number of bytes to reserve, which must be at least 2.
271  */
272 static void put_ebml_void(AVIOContext *pb, uint64_t size)
273 {
274  int64_t currentpos = avio_tell(pb);
275 
276  av_assert0(size >= 2);
277 
279  // we need to subtract the length needed to store the size from the
280  // size we need to reserve so 2 cases, we use 8 bytes to store the
281  // size if possible, 1 byte otherwise
282  if (size < 10)
283  put_ebml_num(pb, size - 2, 0);
284  else
285  put_ebml_num(pb, size - 9, 8);
286  ffio_fill(pb, 0, currentpos + size - avio_tell(pb));
287 }
288 
289 static ebml_master start_ebml_master(AVIOContext *pb, unsigned int elementid,
290  uint64_t expectedsize)
291 {
292  int bytes = expectedsize ? ebml_num_size(expectedsize) : 8;
293  put_ebml_id(pb, elementid);
294  put_ebml_size_unknown(pb, bytes);
295  return (ebml_master) {avio_tell(pb), bytes };
296 }
297 
299 {
300  int64_t pos = avio_tell(pb);
301 
302  if (avio_seek(pb, master.pos - master.sizebytes, SEEK_SET) < 0)
303  return;
304  put_ebml_num(pb, pos - master.pos, master.sizebytes);
305  avio_seek(pb, pos, SEEK_SET);
306 }
307 
308 static void put_xiph_size(AVIOContext *pb, int size)
309 {
310  ffio_fill(pb, 255, size / 255);
311  avio_w8(pb, size % 255);
312 }
313 
314 /**
315  * Free the members allocated in the mux context.
316  */
317 static void mkv_free(MatroskaMuxContext *mkv) {
318  if (mkv->main_seekhead) {
320  av_freep(&mkv->main_seekhead);
321  }
322  if (mkv->cues) {
323  av_freep(&mkv->cues->entries);
324  av_freep(&mkv->cues);
325  }
326  av_freep(&mkv->tracks);
327  av_freep(&mkv->stream_durations);
329 }
330 
331 /**
332  * Initialize a mkv_seekhead element to be ready to index level 1 Matroska
333  * elements. If a maximum number of elements is specified, enough space
334  * will be reserved at the current file location to write a seek head of
335  * that size.
336  *
337  * @param segment_offset The absolute offset to the position in the file
338  * where the segment begins.
339  * @param numelements The maximum number of elements that will be indexed
340  * by this seek head, 0 if unlimited.
341  */
342 static mkv_seekhead *mkv_start_seekhead(AVIOContext *pb, int64_t segment_offset,
343  int numelements)
344 {
345  mkv_seekhead *new_seekhead = av_mallocz(sizeof(mkv_seekhead));
346  if (!new_seekhead)
347  return NULL;
348 
349  new_seekhead->segment_offset = segment_offset;
350 
351  if (numelements > 0) {
352  new_seekhead->filepos = avio_tell(pb);
353  // 21 bytes max for a seek entry, 10 bytes max for the SeekHead ID
354  // and size, and 3 bytes to guarantee that an EBML void element
355  // will fit afterwards
356  new_seekhead->reserved_size = numelements * MAX_SEEKENTRY_SIZE + 13;
357  new_seekhead->max_entries = numelements;
358  put_ebml_void(pb, new_seekhead->reserved_size);
359  }
360  return new_seekhead;
361 }
362 
363 static int mkv_add_seekhead_entry(mkv_seekhead *seekhead, unsigned int elementid, uint64_t filepos)
364 {
365  mkv_seekhead_entry *entries = seekhead->entries;
366 
367  // don't store more elements than we reserved space for
368  if (seekhead->max_entries > 0 && seekhead->max_entries <= seekhead->num_entries)
369  return -1;
370 
371  entries = av_realloc_array(entries, seekhead->num_entries + 1, sizeof(mkv_seekhead_entry));
372  if (!entries)
373  return AVERROR(ENOMEM);
374  seekhead->entries = entries;
375 
376  seekhead->entries[seekhead->num_entries].elementid = elementid;
377  seekhead->entries[seekhead->num_entries++].segmentpos = filepos - seekhead->segment_offset;
378 
379  return 0;
380 }
381 
382 /**
383  * Write the seek head to the file and free it. If a maximum number of
384  * elements was specified to mkv_start_seekhead(), the seek head will
385  * be written at the location reserved for it. Otherwise, it is written
386  * at the current location in the file.
387  *
388  * @return The file offset where the seekhead was written,
389  * -1 if an error occurred.
390  */
392 {
393  mkv_seekhead *seekhead = mkv->main_seekhead;
394  ebml_master metaseek, seekentry;
395  int64_t currentpos;
396  int i;
397 
398  currentpos = avio_tell(pb);
399 
400  if (seekhead->reserved_size > 0) {
401  if (avio_seek(pb, seekhead->filepos, SEEK_SET) < 0) {
402  currentpos = -1;
403  goto fail;
404  }
405  }
406 
407  metaseek = start_ebml_master(pb, MATROSKA_ID_SEEKHEAD, seekhead->reserved_size);
408  for (i = 0; i < seekhead->num_entries; i++) {
409  mkv_seekhead_entry *entry = &seekhead->entries[i];
410 
412 
414  put_ebml_num(pb, ebml_id_size(entry->elementid), 0);
415  put_ebml_id(pb, entry->elementid);
416 
418  end_ebml_master(pb, seekentry);
419  }
420  end_ebml_master(pb, metaseek);
421 
422  if (seekhead->reserved_size > 0) {
423  uint64_t remaining = seekhead->filepos + seekhead->reserved_size - avio_tell(pb);
424  put_ebml_void(pb, remaining);
425  avio_seek(pb, currentpos, SEEK_SET);
426 
427  currentpos = seekhead->filepos;
428  }
429 fail:
431  av_freep(&mkv->main_seekhead);
432 
433  return currentpos;
434 }
435 
436 static mkv_cues *mkv_start_cues(int64_t segment_offset)
437 {
438  mkv_cues *cues = av_mallocz(sizeof(mkv_cues));
439  if (!cues)
440  return NULL;
441 
442  cues->segment_offset = segment_offset;
443  return cues;
444 }
445 
446 static int mkv_add_cuepoint(mkv_cues *cues, int stream, int tracknum, int64_t ts,
447  int64_t cluster_pos, int64_t relative_pos, int64_t duration)
448 {
449  mkv_cuepoint *entries = cues->entries;
450 
451  if (ts < 0)
452  return 0;
453 
454  entries = av_realloc_array(entries, cues->num_entries + 1, sizeof(mkv_cuepoint));
455  if (!entries)
456  return AVERROR(ENOMEM);
457  cues->entries = entries;
458 
459  cues->entries[cues->num_entries].pts = ts;
460  cues->entries[cues->num_entries].stream_idx = stream;
461  cues->entries[cues->num_entries].tracknum = tracknum;
462  cues->entries[cues->num_entries].cluster_pos = cluster_pos - cues->segment_offset;
463  cues->entries[cues->num_entries].relative_pos = relative_pos;
464  cues->entries[cues->num_entries++].duration = duration;
465 
466  return 0;
467 }
468 
469 static int64_t mkv_write_cues(AVFormatContext *s, mkv_cues *cues, mkv_track *tracks, int num_tracks)
470 {
471  AVIOContext *pb = s->pb;
472  ebml_master cues_element;
473  int64_t currentpos;
474  int i, j;
475 
476  currentpos = avio_tell(pb);
477  cues_element = start_ebml_master(pb, MATROSKA_ID_CUES, 0);
478 
479  for (i = 0; i < cues->num_entries; i++) {
480  ebml_master cuepoint, track_positions;
481  mkv_cuepoint *entry = &cues->entries[i];
482  uint64_t pts = entry->pts;
483  int ctp_nb = 0;
484 
485  // Calculate the number of entries, so we know the element size
486  for (j = 0; j < num_tracks; j++)
487  tracks[j].has_cue = 0;
488  for (j = 0; j < cues->num_entries - i && entry[j].pts == pts; j++) {
489  int tracknum = entry[j].stream_idx;
490  av_assert0(tracknum>=0 && tracknum<num_tracks);
491  if (tracks[tracknum].has_cue && s->streams[tracknum]->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE)
492  continue;
493  tracks[tracknum].has_cue = 1;
494  ctp_nb ++;
495  }
496 
499 
500  // put all the entries from different tracks that have the exact same
501  // timestamp into the same CuePoint
502  for (j = 0; j < num_tracks; j++)
503  tracks[j].has_cue = 0;
504  for (j = 0; j < cues->num_entries - i && entry[j].pts == pts; j++) {
505  int tracknum = entry[j].stream_idx;
506  av_assert0(tracknum>=0 && tracknum<num_tracks);
507  if (tracks[tracknum].has_cue && s->streams[tracknum]->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE)
508  continue;
509  tracks[tracknum].has_cue = 1;
511  put_ebml_uint(pb, MATROSKA_ID_CUETRACK , entry[j].tracknum );
512  put_ebml_uint(pb, MATROSKA_ID_CUECLUSTERPOSITION , entry[j].cluster_pos);
513  put_ebml_uint(pb, MATROSKA_ID_CUERELATIVEPOSITION, entry[j].relative_pos);
514  if (entry[j].duration != -1)
516  end_ebml_master(pb, track_positions);
517  }
518  i += j - 1;
519  end_ebml_master(pb, cuepoint);
520  }
521  end_ebml_master(pb, cues_element);
522 
523  return currentpos;
524 }
525 
527 {
528  const uint8_t *header_start[3];
529  int header_len[3];
530  int first_header_size;
531  int j;
532 
533  if (par->codec_id == AV_CODEC_ID_VORBIS)
534  first_header_size = 30;
535  else
536  first_header_size = 42;
537 
539  first_header_size, header_start, header_len) < 0) {
540  av_log(s, AV_LOG_ERROR, "Extradata corrupt.\n");
541  return -1;
542  }
543 
544  avio_w8(pb, 2); // number packets - 1
545  for (j = 0; j < 2; j++) {
546  put_xiph_size(pb, header_len[j]);
547  }
548  for (j = 0; j < 3; j++)
549  avio_write(pb, header_start[j], header_len[j]);
550 
551  return 0;
552 }
553 
555 {
556  if (par->extradata && par->extradata_size == 2)
557  avio_write(pb, par->extradata, 2);
558  else
559  avio_wl16(pb, 0x403); // fallback to the version mentioned in matroska specs
560  return 0;
561 }
562 
564  AVIOContext *pb, AVCodecParameters *par)
565 {
566  int write_comment = (par->channel_layout &&
567  !(par->channel_layout & ~0x3ffffULL) &&
569  int ret = ff_flac_write_header(pb, par->extradata, par->extradata_size,
570  !write_comment);
571 
572  if (ret < 0)
573  return ret;
574 
575  if (write_comment) {
576  const char *vendor = (s->flags & AVFMT_FLAG_BITEXACT) ?
577  "Lavf" : LIBAVFORMAT_IDENT;
578  AVDictionary *dict = NULL;
579  uint8_t buf[32], *data, *p;
580  int64_t len;
581 
582  snprintf(buf, sizeof(buf), "0x%"PRIx64, par->channel_layout);
583  av_dict_set(&dict, "WAVEFORMATEXTENSIBLE_CHANNEL_MASK", buf, 0);
584 
585  len = ff_vorbiscomment_length(dict, vendor);
586  if (len >= ((1<<24) - 4))
587  return AVERROR(EINVAL);
588 
589  data = av_malloc(len + 4);
590  if (!data) {
591  av_dict_free(&dict);
592  return AVERROR(ENOMEM);
593  }
594 
595  data[0] = 0x84;
596  AV_WB24(data + 1, len);
597 
598  p = data + 4;
599  ff_vorbiscomment_write(&p, &dict, vendor);
600 
601  avio_write(pb, data, len + 4);
602 
603  av_freep(&data);
604  av_dict_free(&dict);
605  }
606 
607  return 0;
608 }
609 
611  int *sample_rate, int *output_sample_rate)
612 {
613  MPEG4AudioConfig mp4ac;
614 
615  if (avpriv_mpeg4audio_get_config(&mp4ac, par->extradata,
616  par->extradata_size * 8, 1) < 0) {
617  av_log(s, AV_LOG_ERROR,
618  "Error parsing AAC extradata, unable to determine samplerate.\n");
619  return AVERROR(EINVAL);
620  }
621 
622  *sample_rate = mp4ac.sample_rate;
623  *output_sample_rate = mp4ac.ext_sample_rate;
624  return 0;
625 }
626 
628  AVCodecParameters *par,
629  AVIOContext *dyn_cp)
630 {
631  switch (par->codec_id) {
632  case AV_CODEC_ID_VORBIS:
633  case AV_CODEC_ID_THEORA:
634  return put_xiph_codecpriv(s, dyn_cp, par);
635  case AV_CODEC_ID_FLAC:
636  return put_flac_codecpriv(s, dyn_cp, par);
637  case AV_CODEC_ID_WAVPACK:
638  return put_wv_codecpriv(dyn_cp, par);
639  case AV_CODEC_ID_H264:
640  return ff_isom_write_avcc(dyn_cp, par->extradata,
641  par->extradata_size);
642  case AV_CODEC_ID_HEVC:
643  ff_isom_write_hvcc(dyn_cp, par->extradata,
644  par->extradata_size, 0);
645  return 0;
646  case AV_CODEC_ID_ALAC:
647  if (par->extradata_size < 36) {
648  av_log(s, AV_LOG_ERROR,
649  "Invalid extradata found, ALAC expects a 36-byte "
650  "QuickTime atom.");
651  return AVERROR_INVALIDDATA;
652  } else
653  avio_write(dyn_cp, par->extradata + 12,
654  par->extradata_size - 12);
655  break;
656  default:
657  if (par->codec_id == AV_CODEC_ID_PRORES &&
659  avio_wl32(dyn_cp, par->codec_tag);
660  } else if (par->extradata_size && par->codec_id != AV_CODEC_ID_TTA)
661  avio_write(dyn_cp, par->extradata, par->extradata_size);
662  }
663 
664  return 0;
665 }
666 
668  AVCodecParameters *par,
669  int native_id, int qt_id)
670 {
671  AVIOContext *dyn_cp;
672  uint8_t *codecpriv;
673  int ret, codecpriv_size;
674 
675  ret = avio_open_dyn_buf(&dyn_cp);
676  if (ret < 0)
677  return ret;
678 
679  if (native_id) {
680  ret = mkv_write_native_codecprivate(s, par, dyn_cp);
681  } else if (par->codec_type == AVMEDIA_TYPE_VIDEO) {
682  if (qt_id) {
683  if (!par->codec_tag)
685  par->codec_id);
686  if (par->extradata_size) {
689  ) {
690  int i;
691  avio_wb32(dyn_cp, 0x5a + par->extradata_size);
692  avio_wl32(dyn_cp, par->codec_tag);
693  for(i = 0; i < 0x5a - 8; i++)
694  avio_w8(dyn_cp, 0);
695  }
696  avio_write(dyn_cp, par->extradata, par->extradata_size);
697  }
698  } else {
700  av_log(s, AV_LOG_WARNING, "codec %s is not supported by this format\n",
701  avcodec_get_name(par->codec_id));
702 
703  if (!par->codec_tag)
705  par->codec_id);
706  if (!par->codec_tag && par->codec_id != AV_CODEC_ID_RAWVIDEO) {
707  av_log(s, AV_LOG_ERROR, "No bmp codec tag found for codec %s\n",
708  avcodec_get_name(par->codec_id));
709  ret = AVERROR(EINVAL);
710  }
711 
712  ff_put_bmp_header(dyn_cp, par, ff_codec_bmp_tags, 0, 0);
713  }
714  } else if (par->codec_type == AVMEDIA_TYPE_AUDIO) {
715  unsigned int tag;
717  if (!tag) {
718  av_log(s, AV_LOG_ERROR, "No wav codec tag found for codec %s\n",
719  avcodec_get_name(par->codec_id));
720  ret = AVERROR(EINVAL);
721  }
722  if (!par->codec_tag)
723  par->codec_tag = tag;
724 
726  }
727 
728  codecpriv_size = avio_close_dyn_buf(dyn_cp, &codecpriv);
729  if (codecpriv_size)
731  codecpriv_size);
732  av_free(codecpriv);
733  return ret;
734 }
735 
737  int side_data_size = 0;
738  const uint8_t *side_data = av_stream_get_side_data(
739  st, AV_PKT_DATA_MASTERING_DISPLAY_METADATA, &side_data_size);
741 
742  if (par->color_trc != AVCOL_TRC_UNSPECIFIED &&
743  par->color_trc < AVCOL_TRC_NB) {
745  par->color_trc);
746  }
747  if (par->color_space != AVCOL_SPC_UNSPECIFIED &&
748  par->color_space < AVCOL_SPC_NB) {
750  }
752  par->color_primaries < AVCOL_PRI_NB) {
754  }
755  if (par->color_range != AVCOL_RANGE_UNSPECIFIED &&
756  par->color_range < AVCOL_RANGE_NB) {
758  }
759  if (side_data_size == sizeof(AVMasteringDisplayMetadata)) {
760  ebml_master meta_element = start_ebml_master(
762  const AVMasteringDisplayMetadata *metadata =
763  (const AVMasteringDisplayMetadata*)side_data;
764  if (metadata->has_primaries) {
766  av_q2d(metadata->display_primaries[0][0]));
768  av_q2d(metadata->display_primaries[0][1]));
770  av_q2d(metadata->display_primaries[1][0]));
772  av_q2d(metadata->display_primaries[1][1]));
774  av_q2d(metadata->display_primaries[2][0]));
776  av_q2d(metadata->display_primaries[2][1]));
778  av_q2d(metadata->white_point[0]));
780  av_q2d(metadata->white_point[1]));
781  }
782  if (metadata->has_luminance) {
784  av_q2d(metadata->max_luminance));
786  av_q2d(metadata->min_luminance));
787  }
788  end_ebml_master(pb, meta_element);
789  }
790  end_ebml_master(pb, colorinfo);
791  return 0;
792 }
793 
795  enum AVFieldOrder field_order)
796 {
797  switch (field_order) {
798  case AV_FIELD_UNKNOWN:
801  break;
805  break;
806  case AV_FIELD_TT:
807  case AV_FIELD_BB:
808  case AV_FIELD_TB:
809  case AV_FIELD_BT:
812  switch (field_order) {
813  case AV_FIELD_TT:
816  break;
817  case AV_FIELD_BB:
820  break;
821  case AV_FIELD_TB:
824  break;
825  case AV_FIELD_BT:
828  break;
829  }
830  }
831 }
832 
834  AVStream *st, int mode, int *h_width, int *h_height)
835 {
836  int i;
837  int ret = 0;
840 
841  *h_width = 1;
842  *h_height = 1;
843  // convert metadata into proper side data and add it to the stream
844  if ((tag = av_dict_get(st->metadata, "stereo_mode", NULL, 0)) ||
845  (tag = av_dict_get( s->metadata, "stereo_mode", NULL, 0))) {
846  int stereo_mode = atoi(tag->value);
847 
848  for (i=0; i<MATROSKA_VIDEO_STEREOMODE_TYPE_NB; i++)
849  if (!strcmp(tag->value, ff_matroska_video_stereo_mode[i])){
850  stereo_mode = i;
851  break;
852  }
853 
854  if (stereo_mode < MATROSKA_VIDEO_STEREOMODE_TYPE_NB &&
855  stereo_mode != 10 && stereo_mode != 12) {
856  int ret = ff_mkv_stereo3d_conv(st, stereo_mode);
857  if (ret < 0)
858  return ret;
859  }
860  }
861 
862  // iterate to find the stereo3d side data
863  for (i = 0; i < st->nb_side_data; i++) {
864  AVPacketSideData sd = st->side_data[i];
865  if (sd.type == AV_PKT_DATA_STEREO3D) {
866  AVStereo3D *stereo = (AVStereo3D *)sd.data;
867 
868  switch (stereo->type) {
869  case AV_STEREO3D_2D:
871  break;
873  format = (stereo->flags & AV_STEREO3D_FLAG_INVERT)
876  *h_width = 2;
877  break;
880  if (stereo->flags & AV_STEREO3D_FLAG_INVERT)
881  format--;
882  *h_height = 2;
883  break;
886  if (stereo->flags & AV_STEREO3D_FLAG_INVERT)
887  format--;
888  break;
889  case AV_STEREO3D_LINES:
891  if (stereo->flags & AV_STEREO3D_FLAG_INVERT)
892  format--;
893  *h_height = 2;
894  break;
895  case AV_STEREO3D_COLUMNS:
897  if (stereo->flags & AV_STEREO3D_FLAG_INVERT)
898  format--;
899  *h_width = 2;
900  break;
903  if (stereo->flags & AV_STEREO3D_FLAG_INVERT)
904  format++;
905  break;
906  }
907  break;
908  }
909  }
910 
911  if (format == MATROSKA_VIDEO_STEREOMODE_TYPE_NB)
912  return ret;
913 
914  // if webm, do not write unsupported modes
915  if ((mode == MODE_WEBM &&
918  || format >= MATROSKA_VIDEO_STEREOMODE_TYPE_NB) {
919  av_log(s, AV_LOG_ERROR,
920  "The specified stereo mode is not valid.\n");
922  return AVERROR(EINVAL);
923  }
924 
925  // write StereoMode if format is valid
927 
928  return ret;
929 }
930 
932  int i, AVIOContext *pb, int default_stream_exists)
933 {
934  AVStream *st = s->streams[i];
935  AVCodecParameters *par = st->codecpar;
936  ebml_master subinfo, track;
937  int native_id = 0;
938  int qt_id = 0;
940  int sample_rate = par->sample_rate;
941  int output_sample_rate = 0;
942  int display_width_div = 1;
943  int display_height_div = 1;
944  int j, ret;
946 
947  if (par->codec_type == AVMEDIA_TYPE_ATTACHMENT) {
948  mkv->have_attachments = 1;
949  return 0;
950  }
951 
952  if (par->codec_type == AVMEDIA_TYPE_AUDIO) {
953  if (!bit_depth && par->codec_id != AV_CODEC_ID_ADPCM_G726) {
954  if (par->bits_per_raw_sample)
955  bit_depth = par->bits_per_raw_sample;
956  else
957  bit_depth = av_get_bytes_per_sample(par->format) << 3;
958  }
959  if (!bit_depth)
960  bit_depth = par->bits_per_coded_sample;
961  }
962 
963  if (par->codec_id == AV_CODEC_ID_AAC) {
964  ret = get_aac_sample_rates(s, par, &sample_rate, &output_sample_rate);
965  if (ret < 0)
966  return ret;
967  }
968 
971  mkv->is_dash ? mkv->dash_track_number : i + 1);
973  mkv->is_dash ? mkv->dash_track_number : i + 1);
974  put_ebml_uint (pb, MATROSKA_ID_TRACKFLAGLACING , 0); // no lacing (yet)
975 
976  if ((tag = av_dict_get(st->metadata, "title", NULL, 0)))
978  tag = av_dict_get(st->metadata, "language", NULL, 0);
979  if (mkv->mode != MODE_WEBM || par->codec_id != AV_CODEC_ID_WEBVTT) {
980  put_ebml_string(pb, MATROSKA_ID_TRACKLANGUAGE, tag && tag->value ? tag->value:"und");
981  } else if (tag && tag->value) {
983  }
984 
985  // The default value for TRACKFLAGDEFAULT is 1, so add element
986  // if we need to clear it.
987  if (default_stream_exists && !(st->disposition & AV_DISPOSITION_DEFAULT))
989 
992 
993  if (mkv->mode == MODE_WEBM && par->codec_id == AV_CODEC_ID_WEBVTT) {
994  const char *codec_id;
996  codec_id = "D_WEBVTT/CAPTIONS";
997  native_id = MATROSKA_TRACK_TYPE_SUBTITLE;
998  } else if (st->disposition & AV_DISPOSITION_DESCRIPTIONS) {
999  codec_id = "D_WEBVTT/DESCRIPTIONS";
1000  native_id = MATROSKA_TRACK_TYPE_METADATA;
1001  } else if (st->disposition & AV_DISPOSITION_METADATA) {
1002  codec_id = "D_WEBVTT/METADATA";
1003  native_id = MATROSKA_TRACK_TYPE_METADATA;
1004  } else {
1005  codec_id = "D_WEBVTT/SUBTITLES";
1006  native_id = MATROSKA_TRACK_TYPE_SUBTITLE;
1007  }
1008  put_ebml_string(pb, MATROSKA_ID_CODECID, codec_id);
1009  } else {
1010  // look for a codec ID string specific to mkv to use,
1011  // if none are found, use AVI codes
1012  for (j = 0; ff_mkv_codec_tags[j].id != AV_CODEC_ID_NONE; j++) {
1013  if (ff_mkv_codec_tags[j].id == par->codec_id) {
1015  native_id = 1;
1016  break;
1017  }
1018  }
1019  if (par->codec_id == AV_CODEC_ID_RAWVIDEO && !par->codec_tag) {
1020  if (mkv->allow_raw_vfw) {
1021  native_id = 0;
1022  } else {
1023  av_log(s, AV_LOG_ERROR, "Raw RGB is not supported Natively in Matroska, you can use AVI or NUT or\n"
1024  "If you would like to store it anyway using VFW mode, enable allow_raw_vfw (-allow_raw_vfw 1)\n");
1025  return AVERROR(EINVAL);
1026  }
1027  }
1028  }
1029 
1030  if (par->codec_type == AVMEDIA_TYPE_AUDIO && par->initial_padding && par->codec_id == AV_CODEC_ID_OPUS) {
1031  int64_t codecdelay = av_rescale_q(par->initial_padding,
1032  (AVRational){ 1, 48000 },
1033  (AVRational){ 1, 1000000000 });
1034  if (codecdelay < 0) {
1035  av_log(s, AV_LOG_ERROR, "Initial padding is invalid\n");
1036  return AVERROR(EINVAL);
1037  }
1038 // mkv->tracks[i].ts_offset = av_rescale_q(par->initial_padding,
1039 // (AVRational){ 1, par->sample_rate },
1040 // st->time_base);
1041 
1042  put_ebml_uint(pb, MATROSKA_ID_CODECDELAY, codecdelay);
1043  }
1044  if (par->codec_id == AV_CODEC_ID_OPUS) {
1046  }
1047 
1048  if (mkv->mode == MODE_WEBM && !(par->codec_id == AV_CODEC_ID_VP8 ||
1049  par->codec_id == AV_CODEC_ID_VP9 ||
1050  par->codec_id == AV_CODEC_ID_OPUS ||
1051  par->codec_id == AV_CODEC_ID_VORBIS ||
1052  par->codec_id == AV_CODEC_ID_WEBVTT)) {
1054  "Only VP8 or VP9 video and Vorbis or Opus audio and WebVTT subtitles are supported for WebM.\n");
1055  return AVERROR(EINVAL);
1056  }
1057 
1058  switch (par->codec_type) {
1059  case AVMEDIA_TYPE_VIDEO:
1060  mkv->have_video = 1;
1062 
1063  if( st->avg_frame_rate.num > 0 && st->avg_frame_rate.den > 0
1064  && av_cmp_q(av_inv_q(st->avg_frame_rate), st->time_base) > 0)
1065  put_ebml_uint(pb, MATROSKA_ID_TRACKDEFAULTDURATION, 1000000000LL * st->avg_frame_rate.den / st->avg_frame_rate.num);
1066  else
1067  put_ebml_uint(pb, MATROSKA_ID_TRACKDEFAULTDURATION, 1000000000LL * st->time_base.num / st->time_base.den);
1068 
1069  if (!native_id &&
1070  ff_codec_get_tag(ff_codec_movvideo_tags, par->codec_id) &&
1071  ((!ff_codec_get_tag(ff_codec_bmp_tags, par->codec_id) && par->codec_id != AV_CODEC_ID_RAWVIDEO) ||
1072  par->codec_id == AV_CODEC_ID_SVQ1 ||
1073  par->codec_id == AV_CODEC_ID_SVQ3 ||
1074  par->codec_id == AV_CODEC_ID_CINEPAK))
1075  qt_id = 1;
1076 
1077  if (qt_id)
1078  put_ebml_string(pb, MATROSKA_ID_CODECID, "V_QUICKTIME");
1079  else if (!native_id) {
1080  // if there is no mkv-specific codec ID, use VFW mode
1081  put_ebml_string(pb, MATROSKA_ID_CODECID, "V_MS/VFW/FOURCC");
1082  mkv->tracks[i].write_dts = 1;
1083  s->internal->avoid_negative_ts_use_pts = 0;
1084  }
1085 
1086  subinfo = start_ebml_master(pb, MATROSKA_ID_TRACKVIDEO, 0);
1087 
1088  put_ebml_uint (pb, MATROSKA_ID_VIDEOPIXELWIDTH , par->width);
1089  put_ebml_uint (pb, MATROSKA_ID_VIDEOPIXELHEIGHT, par->height);
1090 
1091  if (mkv->mode != MODE_WEBM)
1092  mkv_write_field_order(pb, par->field_order);
1093 
1094  // check both side data and metadata for stereo information,
1095  // write the result to the bitstream if any is found
1096  ret = mkv_write_stereo_mode(s, pb, st, mkv->mode,
1097  &display_width_div,
1098  &display_height_div);
1099  if (ret < 0)
1100  return ret;
1101 
1102  if (((tag = av_dict_get(st->metadata, "alpha_mode", NULL, 0)) && atoi(tag->value)) ||
1103  ((tag = av_dict_get( s->metadata, "alpha_mode", NULL, 0)) && atoi(tag->value)) ||
1104  (par->format == AV_PIX_FMT_YUVA420P)) {
1106  }
1107 
1108  // write DisplayWidth and DisplayHeight, they contain the size of
1109  // a single source view and/or the display aspect ratio
1110  if (st->sample_aspect_ratio.num) {
1111  int64_t d_width = av_rescale(par->width, st->sample_aspect_ratio.num, st->sample_aspect_ratio.den);
1112  if (d_width > INT_MAX) {
1113  av_log(s, AV_LOG_ERROR, "Overflow in display width\n");
1114  return AVERROR(EINVAL);
1115  }
1116  put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYWIDTH , d_width / display_width_div);
1117  put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYHEIGHT, par->height / display_height_div);
1118  } else if (display_width_div != 1 || display_height_div != 1) {
1119  put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYWIDTH , par->width / display_width_div);
1120  put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYHEIGHT, par->height / display_height_div);
1121  }
1122 
1123  if (par->codec_id == AV_CODEC_ID_RAWVIDEO) {
1124  uint32_t color_space = av_le2ne32(par->codec_tag);
1125  put_ebml_binary(pb, MATROSKA_ID_VIDEOCOLORSPACE, &color_space, sizeof(color_space));
1126  }
1127  if (s->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
1128  mkv_write_video_color(pb, par, st);
1129  }
1130  end_ebml_master(pb, subinfo);
1131  break;
1132 
1133  case AVMEDIA_TYPE_AUDIO:
1135 
1136  if (!native_id)
1137  // no mkv-specific ID, use ACM mode
1138  put_ebml_string(pb, MATROSKA_ID_CODECID, "A_MS/ACM");
1139 
1140  subinfo = start_ebml_master(pb, MATROSKA_ID_TRACKAUDIO, 0);
1141  put_ebml_uint (pb, MATROSKA_ID_AUDIOCHANNELS , par->channels);
1143  if (output_sample_rate)
1144  put_ebml_float(pb, MATROSKA_ID_AUDIOOUTSAMPLINGFREQ, output_sample_rate);
1145  if (bit_depth)
1147  end_ebml_master(pb, subinfo);
1148  break;
1149 
1150  case AVMEDIA_TYPE_SUBTITLE:
1151  if (!native_id) {
1152  av_log(s, AV_LOG_ERROR, "Subtitle codec %d is not supported.\n", par->codec_id);
1153  return AVERROR(ENOSYS);
1154  }
1155 
1156  if (mkv->mode != MODE_WEBM || par->codec_id != AV_CODEC_ID_WEBVTT)
1157  native_id = MATROSKA_TRACK_TYPE_SUBTITLE;
1158 
1159  put_ebml_uint(pb, MATROSKA_ID_TRACKTYPE, native_id);
1160  break;
1161  default:
1162  av_log(s, AV_LOG_ERROR, "Only audio, video, and subtitles are supported for Matroska.\n");
1163  return AVERROR(EINVAL);
1164  }
1165 
1166  if (mkv->mode != MODE_WEBM || par->codec_id != AV_CODEC_ID_WEBVTT) {
1167  ret = mkv_write_codecprivate(s, pb, par, native_id, qt_id);
1168  if (ret < 0)
1169  return ret;
1170  }
1171 
1172  end_ebml_master(pb, track);
1173 
1174  return 0;
1175 }
1176 
1178 {
1179  MatroskaMuxContext *mkv = s->priv_data;
1180  AVIOContext *pb = s->pb;
1181  ebml_master tracks;
1182  int i, ret, default_stream_exists = 0;
1183 
1185  if (ret < 0)
1186  return ret;
1187 
1188  tracks = start_ebml_master(pb, MATROSKA_ID_TRACKS, 0);
1189  for (i = 0; i < s->nb_streams; i++) {
1190  AVStream *st = s->streams[i];
1191  default_stream_exists |= st->disposition & AV_DISPOSITION_DEFAULT;
1192  }
1193  for (i = 0; i < s->nb_streams; i++) {
1194  ret = mkv_write_track(s, mkv, i, pb, default_stream_exists);
1195  if (ret < 0)
1196  return ret;
1197  }
1198  end_ebml_master(pb, tracks);
1199  return 0;
1200 }
1201 
1203 {
1204  MatroskaMuxContext *mkv = s->priv_data;
1205  AVIOContext *pb = s->pb;
1206  ebml_master chapters, editionentry;
1207  AVRational scale = {1, 1E9};
1208  int i, ret;
1209 
1210  if (!s->nb_chapters || mkv->wrote_chapters)
1211  return 0;
1212 
1214  if (ret < 0) return ret;
1215 
1216  chapters = start_ebml_master(pb, MATROSKA_ID_CHAPTERS , 0);
1217  editionentry = start_ebml_master(pb, MATROSKA_ID_EDITIONENTRY, 0);
1220  for (i = 0; i < s->nb_chapters; i++) {
1221  ebml_master chapteratom, chapterdisplay;
1222  AVChapter *c = s->chapters[i];
1223  int64_t chapterstart = av_rescale_q(c->start, c->time_base, scale);
1224  int64_t chapterend = av_rescale_q(c->end, c->time_base, scale);
1225  AVDictionaryEntry *t = NULL;
1226  if (chapterstart < 0 || chapterstart > chapterend || chapterend < 0) {
1227  av_log(s, AV_LOG_ERROR,
1228  "Invalid chapter start (%"PRId64") or end (%"PRId64").\n",
1229  chapterstart, chapterend);
1230  return AVERROR_INVALIDDATA;
1231  }
1232 
1233  chapteratom = start_ebml_master(pb, MATROSKA_ID_CHAPTERATOM, 0);
1235  put_ebml_uint(pb, MATROSKA_ID_CHAPTERTIMESTART, chapterstart);
1236  put_ebml_uint(pb, MATROSKA_ID_CHAPTERTIMEEND, chapterend);
1239  if ((t = av_dict_get(c->metadata, "title", NULL, 0))) {
1240  chapterdisplay = start_ebml_master(pb, MATROSKA_ID_CHAPTERDISPLAY, 0);
1243  end_ebml_master(pb, chapterdisplay);
1244  }
1245  end_ebml_master(pb, chapteratom);
1246  }
1247  end_ebml_master(pb, editionentry);
1248  end_ebml_master(pb, chapters);
1249 
1250  mkv->wrote_chapters = 1;
1251  return 0;
1252 }
1253 
1255 {
1256  uint8_t *key = av_strdup(t->key);
1257  uint8_t *p = key;
1258  const uint8_t *lang = NULL;
1259  ebml_master tag;
1260 
1261  if (!key)
1262  return AVERROR(ENOMEM);
1263 
1264  if ((p = strrchr(p, '-')) &&
1265  (lang = ff_convert_lang_to(p + 1, AV_LANG_ISO639_2_BIBL)))
1266  *p = 0;
1267 
1268  p = key;
1269  while (*p) {
1270  if (*p == ' ')
1271  *p = '_';
1272  else if (*p >= 'a' && *p <= 'z')
1273  *p -= 'a' - 'A';
1274  p++;
1275  }
1276 
1279  if (lang)
1282  end_ebml_master(pb, tag);
1283 
1284  av_freep(&key);
1285  return 0;
1286 }
1287 
1289  unsigned int elementid, unsigned int uid,
1290  ebml_master *tags, ebml_master* tag)
1291 {
1292  MatroskaMuxContext *mkv = s->priv_data;
1293  ebml_master targets;
1294  int ret;
1295 
1296  if (!tags->pos) {
1298  if (ret < 0) return ret;
1299 
1300  *tags = start_ebml_master(s->pb, MATROSKA_ID_TAGS, 0);
1301  }
1302 
1303  *tag = start_ebml_master(s->pb, MATROSKA_ID_TAG, 0);
1304  targets = start_ebml_master(s->pb, MATROSKA_ID_TAGTARGETS, 0);
1305  if (elementid)
1306  put_ebml_uint(s->pb, elementid, uid);
1307  end_ebml_master(s->pb, targets);
1308  return 0;
1309 }
1310 
1311 static int mkv_check_tag_name(const char *name, unsigned int elementid)
1312 {
1313  return av_strcasecmp(name, "title") &&
1314  av_strcasecmp(name, "stereo_mode") &&
1315  av_strcasecmp(name, "creation_time") &&
1316  av_strcasecmp(name, "encoding_tool") &&
1317  av_strcasecmp(name, "duration") &&
1318  (elementid != MATROSKA_ID_TAGTARGETS_TRACKUID ||
1319  av_strcasecmp(name, "language"));
1320 }
1321 
1322 static int mkv_write_tag(AVFormatContext *s, AVDictionary *m, unsigned int elementid,
1323  unsigned int uid, ebml_master *tags)
1324 {
1325  ebml_master tag;
1326  int ret;
1327  AVDictionaryEntry *t = NULL;
1328 
1329  ret = mkv_write_tag_targets(s, elementid, uid, tags, &tag);
1330  if (ret < 0)
1331  return ret;
1332 
1333  while ((t = av_dict_get(m, "", t, AV_DICT_IGNORE_SUFFIX))) {
1334  if (mkv_check_tag_name(t->key, elementid)) {
1335  ret = mkv_write_simpletag(s->pb, t);
1336  if (ret < 0)
1337  return ret;
1338  }
1339  }
1340 
1341  end_ebml_master(s->pb, tag);
1342  return 0;
1343 }
1344 
1345 static int mkv_check_tag(AVDictionary *m, unsigned int elementid)
1346 {
1347  AVDictionaryEntry *t = NULL;
1348 
1349  while ((t = av_dict_get(m, "", t, AV_DICT_IGNORE_SUFFIX)))
1350  if (mkv_check_tag_name(t->key, elementid))
1351  return 1;
1352 
1353  return 0;
1354 }
1355 
1357 {
1358  MatroskaMuxContext *mkv = s->priv_data;
1359  ebml_master tags = {0};
1360  int i, ret;
1361 
1363 
1364  if (mkv_check_tag(s->metadata, 0)) {
1365  ret = mkv_write_tag(s, s->metadata, 0, 0, &tags);
1366  if (ret < 0) return ret;
1367  }
1368 
1369  for (i = 0; i < s->nb_streams; i++) {
1370  AVStream *st = s->streams[i];
1371 
1373  continue;
1374 
1375  ret = mkv_write_tag(s, st->metadata, MATROSKA_ID_TAGTARGETS_TRACKUID, i + 1, &tags);
1376  if (ret < 0) return ret;
1377  }
1378 
1379  if (!mkv->is_live) {
1380  for (i = 0; i < s->nb_streams; i++) {
1381  ebml_master tag_target;
1382  ebml_master tag;
1383 
1384  mkv_write_tag_targets(s, MATROSKA_ID_TAGTARGETS_TRACKUID, i + 1, &tags, &tag_target);
1385 
1387  put_ebml_string(s->pb, MATROSKA_ID_TAGNAME, "DURATION");
1388  mkv->stream_duration_offsets[i] = avio_tell(s->pb);
1389 
1390  // Reserve space to write duration as a 20-byte string.
1391  // 2 (ebml id) + 1 (data size) + 20 (data)
1392  put_ebml_void(s->pb, 23);
1393  end_ebml_master(s->pb, tag);
1394  end_ebml_master(s->pb, tag_target);
1395  }
1396  }
1397 
1398  for (i = 0; i < s->nb_chapters; i++) {
1399  AVChapter *ch = s->chapters[i];
1400 
1402  continue;
1403 
1405  if (ret < 0) return ret;
1406  }
1407 
1408  if (tags.pos)
1409  end_ebml_master(s->pb, tags);
1410  return 0;
1411 }
1412 
1414 {
1415  MatroskaMuxContext *mkv = s->priv_data;
1416  AVIOContext *pb = s->pb;
1417  ebml_master attachments;
1418  AVLFG c;
1419  int i, ret;
1420 
1421  if (!mkv->have_attachments)
1422  return 0;
1423 
1425 
1427  if (ret < 0) return ret;
1428 
1429  attachments = start_ebml_master(pb, MATROSKA_ID_ATTACHMENTS, 0);
1430 
1431  for (i = 0; i < s->nb_streams; i++) {
1432  AVStream *st = s->streams[i];
1433  ebml_master attached_file;
1434  AVDictionaryEntry *t;
1435  const char *mimetype = NULL;
1436  uint64_t fileuid;
1437 
1439  continue;
1440 
1441  attached_file = start_ebml_master(pb, MATROSKA_ID_ATTACHEDFILE, 0);
1442 
1443  if (t = av_dict_get(st->metadata, "title", NULL, 0))
1445  if (!(t = av_dict_get(st->metadata, "filename", NULL, 0))) {
1446  av_log(s, AV_LOG_ERROR, "Attachment stream %d has no filename tag.\n", i);
1447  return AVERROR(EINVAL);
1448  }
1450  if (t = av_dict_get(st->metadata, "mimetype", NULL, 0))
1451  mimetype = t->value;
1452  else if (st->codecpar->codec_id != AV_CODEC_ID_NONE ) {
1453  int i;
1454  for (i = 0; ff_mkv_mime_tags[i].id != AV_CODEC_ID_NONE; i++)
1455  if (ff_mkv_mime_tags[i].id == st->codecpar->codec_id) {
1456  mimetype = ff_mkv_mime_tags[i].str;
1457  break;
1458  }
1459  for (i = 0; ff_mkv_image_mime_tags[i].id != AV_CODEC_ID_NONE; i++)
1460  if (ff_mkv_image_mime_tags[i].id == st->codecpar->codec_id) {
1461  mimetype = ff_mkv_image_mime_tags[i].str;
1462  break;
1463  }
1464  }
1465  if (!mimetype) {
1466  av_log(s, AV_LOG_ERROR, "Attachment stream %d has no mimetype tag and "
1467  "it cannot be deduced from the codec id.\n", i);
1468  return AVERROR(EINVAL);
1469  }
1470 
1471  if (s->flags & AVFMT_FLAG_BITEXACT) {
1472  struct AVSHA *sha = av_sha_alloc();
1473  uint8_t digest[20];
1474  if (!sha)
1475  return AVERROR(ENOMEM);
1476  av_sha_init(sha, 160);
1478  av_sha_final(sha, digest);
1479  av_free(sha);
1480  fileuid = AV_RL64(digest);
1481  } else {
1482  fileuid = av_lfg_get(&c);
1483  }
1484  av_log(s, AV_LOG_VERBOSE, "Using %.16"PRIx64" for attachment %d\n",
1485  fileuid, i);
1486 
1489  put_ebml_uint(pb, MATROSKA_ID_FILEUID, fileuid);
1490  end_ebml_master(pb, attached_file);
1491  }
1492  end_ebml_master(pb, attachments);
1493 
1494  return 0;
1495 }
1496 
1498 {
1499  int i = 0;
1500  int64_t max = 0;
1501  int64_t us;
1502 
1503  AVDictionaryEntry *explicitDuration = av_dict_get(s->metadata, "DURATION", NULL, 0);
1504  if (explicitDuration && (av_parse_time(&us, explicitDuration->value, 1) == 0) && us > 0) {
1505  av_log(s, AV_LOG_DEBUG, "get_metadata_duration found duration in context metadata: %" PRId64 "\n", us);
1506  return us;
1507  }
1508 
1509  for (i = 0; i < s->nb_streams; i++) {
1510  int64_t us;
1511  AVDictionaryEntry *duration = av_dict_get(s->streams[i]->metadata, "DURATION", NULL, 0);
1512 
1513  if (duration && (av_parse_time(&us, duration->value, 1) == 0))
1514  max = FFMAX(max, us);
1515  }
1516 
1517  av_log(s, AV_LOG_DEBUG, "get_metadata_duration returned: %" PRId64 "\n", max);
1518  return max;
1519 }
1520 
1522 {
1523  MatroskaMuxContext *mkv = s->priv_data;
1524  AVIOContext *pb = s->pb;
1525  ebml_master ebml_header, segment_info;
1527  int ret, i, version = 2;
1528  int64_t creation_time;
1529 
1530  if (!strcmp(s->oformat->name, "webm"))
1531  mkv->mode = MODE_WEBM;
1532  else
1533  mkv->mode = MODE_MATROSKAv2;
1534 
1535  if (mkv->mode != MODE_WEBM ||
1536  av_dict_get(s->metadata, "stereo_mode", NULL, 0) ||
1537  av_dict_get(s->metadata, "alpha_mode", NULL, 0))
1538  version = 4;
1539 
1540  for (i = 0; i < s->nb_streams; i++) {
1541  if (s->streams[i]->codecpar->codec_id == AV_CODEC_ID_ATRAC3 ||
1547  av_log(s, AV_LOG_ERROR,
1548  "The Matroska muxer does not yet support muxing %s\n",
1550  return AVERROR_PATCHWELCOME;
1551  }
1552  if (s->streams[i]->codecpar->codec_id == AV_CODEC_ID_OPUS ||
1553  av_dict_get(s->streams[i]->metadata, "stereo_mode", NULL, 0) ||
1554  av_dict_get(s->streams[i]->metadata, "alpha_mode", NULL, 0))
1555  version = 4;
1556  }
1557 
1558  mkv->tracks = av_mallocz_array(s->nb_streams, sizeof(*mkv->tracks));
1559  if (!mkv->tracks) {
1560  ret = AVERROR(ENOMEM);
1561  goto fail;
1562  }
1563  ebml_header = start_ebml_master(pb, EBML_ID_HEADER, 0);
1569  put_ebml_uint (pb, EBML_ID_DOCTYPEVERSION , version);
1571  end_ebml_master(pb, ebml_header);
1572 
1574  mkv->segment_offset = avio_tell(pb);
1575 
1576  // we write 2 seek heads - one at the end of the file to point to each
1577  // cluster, and one at the beginning to point to all other level one
1578  // elements (including the seek head at the end of the file), which
1579  // isn't more than 10 elements if we only write one of each other
1580  // currently defined level 1 element
1581  mkv->main_seekhead = mkv_start_seekhead(pb, mkv->segment_offset, 10);
1582  if (!mkv->main_seekhead) {
1583  ret = AVERROR(ENOMEM);
1584  goto fail;
1585  }
1586 
1588  if (ret < 0) goto fail;
1589 
1590  segment_info = start_ebml_master(pb, MATROSKA_ID_INFO, 0);
1592  if ((tag = av_dict_get(s->metadata, "title", NULL, 0)))
1594  if (!(s->flags & AVFMT_FLAG_BITEXACT)) {
1596  if ((tag = av_dict_get(s->metadata, "encoding_tool", NULL, 0)))
1598  else
1600 
1601  if (mkv->mode != MODE_WEBM) {
1602  uint32_t segment_uid[4];
1603  AVLFG lfg;
1604 
1606 
1607  for (i = 0; i < 4; i++)
1608  segment_uid[i] = av_lfg_get(&lfg);
1609 
1610  put_ebml_binary(pb, MATROSKA_ID_SEGMENTUID, segment_uid, 16);
1611  }
1612  } else {
1613  const char *ident = "Lavf";
1616  }
1617 
1618  if (ff_parse_creation_time_metadata(s, &creation_time, 0) > 0) {
1619  // Adjust time so it's relative to 2001-01-01 and convert to nanoseconds.
1620  int64_t date_utc = (creation_time - 978307200000000LL) * 1000;
1621  uint8_t date_utc_buf[8];
1622  AV_WB64(date_utc_buf, date_utc);
1623  put_ebml_binary(pb, MATROSKA_ID_DATEUTC, date_utc_buf, 8);
1624  }
1625 
1626  // reserve space for the duration
1627  mkv->duration = 0;
1628  mkv->duration_offset = avio_tell(pb);
1629  if (!mkv->is_live) {
1630  int64_t metadata_duration = get_metadata_duration(s);
1631 
1632  if (s->duration > 0) {
1633  int64_t scaledDuration = av_rescale(s->duration, 1000, AV_TIME_BASE);
1634  put_ebml_float(pb, MATROSKA_ID_DURATION, scaledDuration);
1635  av_log(s, AV_LOG_DEBUG, "Write early duration from recording time = %" PRIu64 "\n", scaledDuration);
1636  } else if (metadata_duration > 0) {
1637  int64_t scaledDuration = av_rescale(metadata_duration, 1000, AV_TIME_BASE);
1638  put_ebml_float(pb, MATROSKA_ID_DURATION, scaledDuration);
1639  av_log(s, AV_LOG_DEBUG, "Write early duration from metadata = %" PRIu64 "\n", scaledDuration);
1640  } else {
1641  put_ebml_void(pb, 11); // assumes double-precision float to be written
1642  }
1643  }
1644  end_ebml_master(pb, segment_info);
1645 
1646  // initialize stream_duration fields
1647  mkv->stream_durations = av_mallocz(s->nb_streams * sizeof(int64_t));
1648  mkv->stream_duration_offsets = av_mallocz(s->nb_streams * sizeof(int64_t));
1649 
1650  ret = mkv_write_tracks(s);
1651  if (ret < 0)
1652  goto fail;
1653 
1654  for (i = 0; i < s->nb_chapters; i++)
1655  mkv->chapter_id_offset = FFMAX(mkv->chapter_id_offset, 1LL - s->chapters[i]->id);
1656 
1657  if (mkv->mode != MODE_WEBM) {
1658  ret = mkv_write_chapters(s);
1659  if (ret < 0)
1660  goto fail;
1661 
1662  ret = mkv_write_tags(s);
1663  if (ret < 0)
1664  goto fail;
1665 
1666  ret = mkv_write_attachments(s);
1667  if (ret < 0)
1668  goto fail;
1669  }
1670 
1671  if (!s->pb->seekable && !mkv->is_live)
1672  mkv_write_seekhead(pb, mkv);
1673 
1674  mkv->cues = mkv_start_cues(mkv->segment_offset);
1675  if (!mkv->cues) {
1676  ret = AVERROR(ENOMEM);
1677  goto fail;
1678  }
1679  if (pb->seekable && mkv->reserve_cues_space) {
1680  mkv->cues_pos = avio_tell(pb);
1682  }
1683 
1685  mkv->cur_audio_pkt.size = 0;
1686  mkv->cluster_pos = -1;
1687 
1688  avio_flush(pb);
1689 
1690  // start a new cluster every 5 MB or 5 sec, or 32k / 1 sec for streaming or
1691  // after 4k and on a keyframe
1692  if (pb->seekable) {
1693  if (mkv->cluster_time_limit < 0)
1694  mkv->cluster_time_limit = 5000;
1695  if (mkv->cluster_size_limit < 0)
1696  mkv->cluster_size_limit = 5 * 1024 * 1024;
1697  } else {
1698  if (mkv->cluster_time_limit < 0)
1699  mkv->cluster_time_limit = 1000;
1700  if (mkv->cluster_size_limit < 0)
1701  mkv->cluster_size_limit = 32 * 1024;
1702  }
1703 
1704  return 0;
1705 fail:
1706  mkv_free(mkv);
1707  return ret;
1708 }
1709 
1710 static int mkv_blockgroup_size(int pkt_size)
1711 {
1712  int size = pkt_size + 4;
1713  size += ebml_num_size(size);
1714  size += 2; // EBML ID for block and block duration
1715  size += 8; // max size of block duration
1716  size += ebml_num_size(size);
1717  size += 1; // blockgroup EBML ID
1718  return size;
1719 }
1720 
1721 static int mkv_strip_wavpack(const uint8_t *src, uint8_t **pdst, int *size)
1722 {
1723  uint8_t *dst;
1724  int srclen = *size;
1725  int offset = 0;
1726  int ret;
1727 
1728  dst = av_malloc(srclen);
1729  if (!dst)
1730  return AVERROR(ENOMEM);
1731 
1732  while (srclen >= WV_HEADER_SIZE) {
1733  WvHeader header;
1734 
1735  ret = ff_wv_parse_header(&header, src);
1736  if (ret < 0)
1737  goto fail;
1738  src += WV_HEADER_SIZE;
1739  srclen -= WV_HEADER_SIZE;
1740 
1741  if (srclen < header.blocksize) {
1742  ret = AVERROR_INVALIDDATA;
1743  goto fail;
1744  }
1745 
1746  if (header.initial) {
1747  AV_WL32(dst + offset, header.samples);
1748  offset += 4;
1749  }
1750  AV_WL32(dst + offset, header.flags);
1751  AV_WL32(dst + offset + 4, header.crc);
1752  offset += 8;
1753 
1754  if (!(header.initial && header.final)) {
1755  AV_WL32(dst + offset, header.blocksize);
1756  offset += 4;
1757  }
1758 
1759  memcpy(dst + offset, src, header.blocksize);
1760  src += header.blocksize;
1761  srclen -= header.blocksize;
1762  offset += header.blocksize;
1763  }
1764 
1765  *pdst = dst;
1766  *size = offset;
1767 
1768  return 0;
1769 fail:
1770  av_freep(&dst);
1771  return ret;
1772 }
1773 
1775  unsigned int blockid, AVPacket *pkt, int keyframe)
1776 {
1777  MatroskaMuxContext *mkv = s->priv_data;
1779  uint8_t *data = NULL, *side_data = NULL;
1780  int offset = 0, size = pkt->size, side_data_size = 0;
1781  int64_t ts = mkv->tracks[pkt->stream_index].write_dts ? pkt->dts : pkt->pts;
1782  uint64_t additional_id = 0;
1783  int64_t discard_padding = 0;
1784  uint8_t track_number = (mkv->is_dash ? mkv->dash_track_number : (pkt->stream_index + 1));
1785  ebml_master block_group, block_additions, block_more;
1786 
1787  av_log(s, AV_LOG_DEBUG, "Writing block at offset %" PRIu64 ", size %d, "
1788  "pts %" PRId64 ", dts %" PRId64 ", duration %" PRId64 ", keyframe %d\n",
1789  avio_tell(pb), pkt->size, pkt->pts, pkt->dts, pkt->duration,
1790  keyframe != 0);
1791  if (par->codec_id == AV_CODEC_ID_H264 && par->extradata_size > 0 &&
1792  (AV_RB24(par->extradata) == 1 || AV_RB32(par->extradata) == 1))
1793  ff_avc_parse_nal_units_buf(pkt->data, &data, &size);
1794  else if (par->codec_id == AV_CODEC_ID_HEVC && par->extradata_size > 6 &&
1795  (AV_RB24(par->extradata) == 1 || AV_RB32(par->extradata) == 1))
1796  /* extradata is Annex B, assume the bitstream is too and convert it */
1797  ff_hevc_annexb2mp4_buf(pkt->data, &data, &size, 0, NULL);
1798  else if (par->codec_id == AV_CODEC_ID_WAVPACK) {
1799  int ret = mkv_strip_wavpack(pkt->data, &data, &size);
1800  if (ret < 0) {
1801  av_log(s, AV_LOG_ERROR, "Error stripping a WavPack packet.\n");
1802  return;
1803  }
1804  } else
1805  data = pkt->data;
1806 
1807  if (par->codec_id == AV_CODEC_ID_PRORES && size >= 8) {
1808  /* Matroska specification requires to remove the first QuickTime atom
1809  */
1810  size -= 8;
1811  offset = 8;
1812  }
1813 
1814  side_data = av_packet_get_side_data(pkt,
1816  &side_data_size);
1817 
1818  if (side_data && side_data_size >= 10) {
1819  discard_padding = av_rescale_q(AV_RL32(side_data + 4),
1820  (AVRational){1, par->sample_rate},
1821  (AVRational){1, 1000000000});
1822  }
1823 
1824  side_data = av_packet_get_side_data(pkt,
1826  &side_data_size);
1827  if (side_data) {
1828  additional_id = AV_RB64(side_data);
1829  side_data += 8;
1830  side_data_size -= 8;
1831  }
1832 
1833  if ((side_data_size && additional_id == 1) || discard_padding) {
1834  block_group = start_ebml_master(pb, MATROSKA_ID_BLOCKGROUP, 0);
1835  blockid = MATROSKA_ID_BLOCK;
1836  }
1837 
1838  put_ebml_id(pb, blockid);
1839  put_ebml_num(pb, size + 4, 0);
1840  // this assumes stream_index is less than 126
1841  avio_w8(pb, 0x80 | track_number);
1842  avio_wb16(pb, ts - mkv->cluster_pts);
1843  avio_w8(pb, (blockid == MATROSKA_ID_SIMPLEBLOCK && keyframe) ? (1 << 7) : 0);
1844  avio_write(pb, data + offset, size);
1845  if (data != pkt->data)
1846  av_free(data);
1847 
1848  if (blockid == MATROSKA_ID_BLOCK && !keyframe) {
1850  mkv->last_track_timestamp[track_number - 1]);
1851  }
1852  mkv->last_track_timestamp[track_number - 1] = ts - mkv->cluster_pts;
1853 
1854  if (discard_padding) {
1855  put_ebml_sint(pb, MATROSKA_ID_DISCARDPADDING, discard_padding);
1856  }
1857 
1858  if (side_data_size && additional_id == 1) {
1859  block_additions = start_ebml_master(pb, MATROSKA_ID_BLOCKADDITIONS, 0);
1860  block_more = start_ebml_master(pb, MATROSKA_ID_BLOCKMORE, 0);
1863  put_ebml_num(pb, side_data_size, 0);
1864  avio_write(pb, side_data, side_data_size);
1865  end_ebml_master(pb, block_more);
1866  end_ebml_master(pb, block_additions);
1867  }
1868  if ((side_data_size && additional_id == 1) || discard_padding) {
1869  end_ebml_master(pb, block_group);
1870  }
1871 }
1872 
1874 {
1875  MatroskaMuxContext *mkv = s->priv_data;
1876  ebml_master blockgroup;
1877  int id_size, settings_size, size;
1878  uint8_t *id, *settings;
1879  int64_t ts = mkv->tracks[pkt->stream_index].write_dts ? pkt->dts : pkt->pts;
1880  const int flags = 0;
1881 
1882  id_size = 0;
1884  &id_size);
1885 
1886  settings_size = 0;
1888  &settings_size);
1889 
1890  size = id_size + 1 + settings_size + 1 + pkt->size;
1891 
1892  av_log(s, AV_LOG_DEBUG, "Writing block at offset %" PRIu64 ", size %d, "
1893  "pts %" PRId64 ", dts %" PRId64 ", duration %" PRId64 ", flags %d\n",
1894  avio_tell(pb), size, pkt->pts, pkt->dts, pkt->duration, flags);
1895 
1897 
1899  put_ebml_num(pb, size + 4, 0);
1900  avio_w8(pb, 0x80 | (pkt->stream_index + 1)); // this assumes stream_index is less than 126
1901  avio_wb16(pb, ts - mkv->cluster_pts);
1902  avio_w8(pb, flags);
1903  avio_printf(pb, "%.*s\n%.*s\n%.*s", id_size, id, settings_size, settings, pkt->size, pkt->data);
1904 
1906  end_ebml_master(pb, blockgroup);
1907 
1908  return pkt->duration;
1909 }
1910 
1912 {
1913  MatroskaMuxContext *mkv = s->priv_data;
1914  int bufsize;
1915  uint8_t *dyn_buf;
1916 
1917  if (!mkv->dyn_bc)
1918  return;
1919 
1920  bufsize = avio_close_dyn_buf(mkv->dyn_bc, &dyn_buf);
1921  avio_write(s->pb, dyn_buf, bufsize);
1922  av_free(dyn_buf);
1923  mkv->dyn_bc = NULL;
1924 }
1925 
1927 {
1928  MatroskaMuxContext *mkv = s->priv_data;
1929  AVIOContext *pb;
1930 
1931  if (s->pb->seekable) {
1932  pb = s->pb;
1933  } else {
1934  pb = mkv->dyn_bc;
1935  }
1936 
1937  av_log(s, AV_LOG_DEBUG,
1938  "Starting new cluster at offset %" PRIu64 " bytes, "
1939  "pts %" PRIu64 "dts %" PRIu64 "\n",
1940  avio_tell(pb), pkt->pts, pkt->dts);
1941  end_ebml_master(pb, mkv->cluster);
1942  mkv->cluster_pos = -1;
1943  if (mkv->dyn_bc)
1944  mkv_flush_dynbuf(s);
1945  avio_flush(s->pb);
1946 }
1947 
1949 {
1950  MatroskaMuxContext *mkv = s->priv_data;
1951  AVIOContext *pb = s->pb;
1953  int keyframe = !!(pkt->flags & AV_PKT_FLAG_KEY);
1954  int duration = pkt->duration;
1955  int ret;
1956  int64_t ts = mkv->tracks[pkt->stream_index].write_dts ? pkt->dts : pkt->pts;
1957  int64_t relative_packet_pos;
1958  int dash_tracknum = mkv->is_dash ? mkv->dash_track_number : pkt->stream_index + 1;
1959 
1960  if (ts == AV_NOPTS_VALUE) {
1961  av_log(s, AV_LOG_ERROR, "Can't write packet with unknown timestamp\n");
1962  return AVERROR(EINVAL);
1963  }
1964  ts += mkv->tracks[pkt->stream_index].ts_offset;
1965 
1966  if (mkv->cluster_pos != -1) {
1967  int64_t cluster_time = ts - mkv->cluster_pts + mkv->tracks[pkt->stream_index].ts_offset;
1968  if ((int16_t)cluster_time != cluster_time) {
1969  av_log(s, AV_LOG_WARNING, "Starting new cluster due to timestamp\n");
1970  mkv_start_new_cluster(s, pkt);
1971  }
1972  }
1973 
1974  if (!s->pb->seekable) {
1975  if (!mkv->dyn_bc) {
1976  ret = avio_open_dyn_buf(&mkv->dyn_bc);
1977  if (ret < 0) {
1978  av_log(s, AV_LOG_ERROR, "Failed to open dynamic buffer\n");
1979  return ret;
1980  }
1981  }
1982  pb = mkv->dyn_bc;
1983  }
1984 
1985  if (mkv->cluster_pos == -1) {
1986  mkv->cluster_pos = avio_tell(s->pb);
1989  mkv->cluster_pts = FFMAX(0, ts);
1990  }
1991 
1992  relative_packet_pos = avio_tell(s->pb) - mkv->cluster.pos;
1993 
1994  if (par->codec_type != AVMEDIA_TYPE_SUBTITLE) {
1995  mkv_write_block(s, pb, MATROSKA_ID_SIMPLEBLOCK, pkt, keyframe);
1996  if (s->pb->seekable && (par->codec_type == AVMEDIA_TYPE_VIDEO && keyframe || add_cue)) {
1997  ret = mkv_add_cuepoint(mkv->cues, pkt->stream_index, dash_tracknum, ts, mkv->cluster_pos, relative_packet_pos, -1);
1998  if (ret < 0) return ret;
1999  }
2000  } else {
2001  if (par->codec_id == AV_CODEC_ID_WEBVTT) {
2002  duration = mkv_write_vtt_blocks(s, pb, pkt);
2003  } else {
2005  mkv_blockgroup_size(pkt->size));
2006 
2007 #if FF_API_CONVERGENCE_DURATION
2009  /* For backward compatibility, prefer convergence_duration. */
2010  if (pkt->convergence_duration > 0) {
2011  duration = pkt->convergence_duration;
2012  }
2014 #endif
2015  /* All subtitle blocks are considered to be keyframes. */
2016  mkv_write_block(s, pb, MATROSKA_ID_BLOCK, pkt, 1);
2018  end_ebml_master(pb, blockgroup);
2019  }
2020 
2021  if (s->pb->seekable) {
2022  ret = mkv_add_cuepoint(mkv->cues, pkt->stream_index, dash_tracknum, ts,
2023  mkv->cluster_pos, relative_packet_pos, duration);
2024  if (ret < 0)
2025  return ret;
2026  }
2027  }
2028 
2029  mkv->duration = FFMAX(mkv->duration, ts + duration);
2030 
2031  if (mkv->stream_durations)
2032  mkv->stream_durations[pkt->stream_index] =
2033  FFMAX(mkv->stream_durations[pkt->stream_index], ts + duration);
2034 
2035  return 0;
2036 }
2037 
2039 {
2040  MatroskaMuxContext *mkv = s->priv_data;
2042  int keyframe = !!(pkt->flags & AV_PKT_FLAG_KEY);
2043  int cluster_size;
2044  int64_t cluster_time;
2045  int ret;
2046  int start_new_cluster;
2047 
2048  if (mkv->tracks[pkt->stream_index].write_dts)
2049  cluster_time = pkt->dts - mkv->cluster_pts;
2050  else
2051  cluster_time = pkt->pts - mkv->cluster_pts;
2052  cluster_time += mkv->tracks[pkt->stream_index].ts_offset;
2053 
2054  // start a new cluster every 5 MB or 5 sec, or 32k / 1 sec for streaming or
2055  // after 4k and on a keyframe
2056  if (s->pb->seekable) {
2057  cluster_size = avio_tell(s->pb) - mkv->cluster_pos;
2058  } else {
2059  cluster_size = avio_tell(mkv->dyn_bc);
2060  }
2061 
2062  if (mkv->is_dash && codec_type == AVMEDIA_TYPE_VIDEO) {
2063  // WebM DASH specification states that the first block of every cluster
2064  // has to be a key frame. So for DASH video, we only create a cluster
2065  // on seeing key frames.
2066  start_new_cluster = keyframe;
2067  } else if (mkv->is_dash && codec_type == AVMEDIA_TYPE_AUDIO &&
2068  (mkv->cluster_pos == -1 ||
2069  cluster_time > mkv->cluster_time_limit)) {
2070  // For DASH audio, we create a Cluster based on cluster_time_limit
2071  start_new_cluster = 1;
2072  } else if (!mkv->is_dash &&
2073  (cluster_size > mkv->cluster_size_limit ||
2074  cluster_time > mkv->cluster_time_limit ||
2075  (codec_type == AVMEDIA_TYPE_VIDEO && keyframe &&
2076  cluster_size > 4 * 1024))) {
2077  start_new_cluster = 1;
2078  } else {
2079  start_new_cluster = 0;
2080  }
2081 
2082  if (mkv->cluster_pos != -1 && start_new_cluster) {
2083  mkv_start_new_cluster(s, pkt);
2084  }
2085 
2086  if (!mkv->cluster_pos)
2087  avio_write_marker(s->pb,
2090 
2091  // check if we have an audio packet cached
2092  if (mkv->cur_audio_pkt.size > 0) {
2093  // for DASH audio, a CuePoint has to be added when there is a new cluster.
2095  mkv->is_dash ? start_new_cluster : 0);
2097  if (ret < 0) {
2098  av_log(s, AV_LOG_ERROR,
2099  "Could not write cached audio packet ret:%d\n", ret);
2100  return ret;
2101  }
2102  }
2103 
2104  // buffer an audio packet to ensure the packet containing the video
2105  // keyframe's timecode is contained in the same cluster for WebM
2106  if (codec_type == AVMEDIA_TYPE_AUDIO) {
2107  ret = av_packet_ref(&mkv->cur_audio_pkt, pkt);
2108  } else
2109  ret = mkv_write_packet_internal(s, pkt, 0);
2110  return ret;
2111 }
2112 
2114 {
2115  MatroskaMuxContext *mkv = s->priv_data;
2116  AVIOContext *pb;
2117  if (s->pb->seekable)
2118  pb = s->pb;
2119  else
2120  pb = mkv->dyn_bc;
2121  if (!pkt) {
2122  if (mkv->cluster_pos != -1) {
2123  av_log(s, AV_LOG_DEBUG,
2124  "Flushing cluster at offset %" PRIu64 " bytes\n",
2125  avio_tell(pb));
2126  end_ebml_master(pb, mkv->cluster);
2127  mkv->cluster_pos = -1;
2128  if (mkv->dyn_bc)
2129  mkv_flush_dynbuf(s);
2130  avio_flush(s->pb);
2131  }
2132  return 1;
2133  }
2134  return mkv_write_packet(s, pkt);
2135 }
2136 
2138 {
2139  MatroskaMuxContext *mkv = s->priv_data;
2140  AVIOContext *pb = s->pb;
2141  int64_t currentpos, cuespos;
2142  int ret;
2143 
2144  // check if we have an audio packet cached
2145  if (mkv->cur_audio_pkt.size > 0) {
2146  ret = mkv_write_packet_internal(s, &mkv->cur_audio_pkt, 0);
2148  if (ret < 0) {
2149  av_log(s, AV_LOG_ERROR,
2150  "Could not write cached audio packet ret:%d\n", ret);
2151  return ret;
2152  }
2153  }
2154 
2155  if (mkv->dyn_bc) {
2156  end_ebml_master(mkv->dyn_bc, mkv->cluster);
2157  mkv_flush_dynbuf(s);
2158  } else if (mkv->cluster_pos != -1) {
2159  end_ebml_master(pb, mkv->cluster);
2160  }
2161 
2162  if (mkv->mode != MODE_WEBM) {
2163  ret = mkv_write_chapters(s);
2164  if (ret < 0)
2165  return ret;
2166  }
2167 
2168  if (pb->seekable) {
2169  if (mkv->cues->num_entries) {
2170  if (mkv->reserve_cues_space) {
2171  int64_t cues_end;
2172 
2173  currentpos = avio_tell(pb);
2174  avio_seek(pb, mkv->cues_pos, SEEK_SET);
2175 
2176  cuespos = mkv_write_cues(s, mkv->cues, mkv->tracks, s->nb_streams);
2177  cues_end = avio_tell(pb);
2178  if (cues_end > cuespos + mkv->reserve_cues_space) {
2179  av_log(s, AV_LOG_ERROR,
2180  "Insufficient space reserved for cues: %d "
2181  "(needed: %" PRId64 ").\n",
2182  mkv->reserve_cues_space, cues_end - cuespos);
2183  return AVERROR(EINVAL);
2184  }
2185 
2186  if (cues_end < cuespos + mkv->reserve_cues_space)
2188  (cues_end - cuespos));
2189 
2190  avio_seek(pb, currentpos, SEEK_SET);
2191  } else {
2192  cuespos = mkv_write_cues(s, mkv->cues, mkv->tracks, s->nb_streams);
2193  }
2194 
2196  cuespos);
2197  if (ret < 0)
2198  return ret;
2199  }
2200 
2201  mkv_write_seekhead(pb, mkv);
2202 
2203  // update the duration
2204  av_log(s, AV_LOG_DEBUG, "end duration = %" PRIu64 "\n", mkv->duration);
2205  currentpos = avio_tell(pb);
2206  avio_seek(pb, mkv->duration_offset, SEEK_SET);
2208 
2209  // update stream durations
2210  if (mkv->stream_durations) {
2211  int i;
2212  for (i = 0; i < s->nb_streams; ++i) {
2213  AVStream *st = s->streams[i];
2214  double duration_sec = mkv->stream_durations[i] * av_q2d(st->time_base);
2215  char duration_string[20] = "";
2216 
2217  av_log(s, AV_LOG_DEBUG, "stream %d end duration = %" PRIu64 "\n", i,
2218  mkv->stream_durations[i]);
2219 
2220  if (!mkv->is_live && mkv->stream_duration_offsets[i] > 0) {
2221  avio_seek(pb, mkv->stream_duration_offsets[i], SEEK_SET);
2222 
2223  snprintf(duration_string, 20, "%02d:%02d:%012.9f",
2224  (int) duration_sec / 3600, ((int) duration_sec / 60) % 60,
2225  fmod(duration_sec, 60));
2226 
2227  put_ebml_binary(pb, MATROSKA_ID_TAGSTRING, duration_string, 20);
2228  }
2229  }
2230  }
2231 
2232  avio_seek(pb, currentpos, SEEK_SET);
2233  }
2234 
2235  if (!mkv->is_live) {
2236  end_ebml_master(pb, mkv->segment);
2237  }
2238 
2239  mkv_free(mkv);
2240  return 0;
2241 }
2242 
2243 static int mkv_query_codec(enum AVCodecID codec_id, int std_compliance)
2244 {
2245  int i;
2246  for (i = 0; ff_mkv_codec_tags[i].id != AV_CODEC_ID_NONE; i++)
2247  if (ff_mkv_codec_tags[i].id == codec_id)
2248  return 1;
2249 
2250  if (std_compliance < FF_COMPLIANCE_NORMAL) {
2251  enum AVMediaType type = avcodec_get_type(codec_id);
2252  // mkv theoretically supports any video/audio through VFW/ACM
2253  if (type == AVMEDIA_TYPE_VIDEO || type == AVMEDIA_TYPE_AUDIO)
2254  return 1;
2255  }
2256 
2257  return 0;
2258 }
2259 
2260 static int mkv_init(struct AVFormatContext *s)
2261 {
2262  int i;
2263 
2264  if (s->avoid_negative_ts < 0) {
2265  s->avoid_negative_ts = 1;
2267  }
2268 
2269  for (i = 0; i < s->nb_streams; i++) {
2270  // ms precision is the de-facto standard timescale for mkv files
2271  avpriv_set_pts_info(s->streams[i], 64, 1, 1000);
2272  }
2273 
2274  return 0;
2275 }
2276 
2277 static int mkv_check_bitstream(struct AVFormatContext *s, const AVPacket *pkt)
2278 {
2279  int ret = 1;
2280  AVStream *st = s->streams[pkt->stream_index];
2281 
2282  if (st->codecpar->codec_id == AV_CODEC_ID_AAC) {
2283  if (pkt->size > 2 && (AV_RB16(pkt->data) & 0xfff0) == 0xfff0)
2284  ret = ff_stream_add_bitstream_filter(st, "aac_adtstoasc", NULL);
2285  } else if (st->codecpar->codec_id == AV_CODEC_ID_VP9) {
2286  ret = ff_stream_add_bitstream_filter(st, "vp9_superframe", NULL);
2287  }
2288 
2289  return ret;
2290 }
2291 
2293  { AV_CODEC_ID_ALAC, 0XFFFFFFFF },
2294  { AV_CODEC_ID_EAC3, 0XFFFFFFFF },
2295  { AV_CODEC_ID_MLP, 0xFFFFFFFF },
2296  { AV_CODEC_ID_OPUS, 0xFFFFFFFF },
2297  { AV_CODEC_ID_PCM_S16BE, 0xFFFFFFFF },
2298  { AV_CODEC_ID_PCM_S24BE, 0xFFFFFFFF },
2299  { AV_CODEC_ID_PCM_S32BE, 0xFFFFFFFF },
2300  { AV_CODEC_ID_QDM2, 0xFFFFFFFF },
2301  { AV_CODEC_ID_RA_144, 0xFFFFFFFF },
2302  { AV_CODEC_ID_RA_288, 0xFFFFFFFF },
2303  { AV_CODEC_ID_COOK, 0xFFFFFFFF },
2304  { AV_CODEC_ID_TRUEHD, 0xFFFFFFFF },
2305  { AV_CODEC_ID_NONE, 0xFFFFFFFF }
2306 };
2307 
2309  { AV_CODEC_ID_RV10, 0xFFFFFFFF },
2310  { AV_CODEC_ID_RV20, 0xFFFFFFFF },
2311  { AV_CODEC_ID_RV30, 0xFFFFFFFF },
2312  { AV_CODEC_ID_RV40, 0xFFFFFFFF },
2313  { AV_CODEC_ID_VP9, 0xFFFFFFFF },
2314  { AV_CODEC_ID_NONE, 0xFFFFFFFF }
2315 };
2316 
2318  { AV_CODEC_ID_DVB_SUBTITLE, 0xFFFFFFFF },
2319  { AV_CODEC_ID_HDMV_PGS_SUBTITLE, 0xFFFFFFFF },
2320  { AV_CODEC_ID_NONE, 0xFFFFFFFF }
2321 };
2322 
2323 #define OFFSET(x) offsetof(MatroskaMuxContext, x)
2324 #define FLAGS AV_OPT_FLAG_ENCODING_PARAM
2325 static const AVOption options[] = {
2326  { "reserve_index_space", "Reserve a given amount of space (in bytes) at the beginning of the file for the index (cues).", OFFSET(reserve_cues_space), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FLAGS },
2327  { "cluster_size_limit", "Store at most the provided amount of bytes in a cluster. ", OFFSET(cluster_size_limit), AV_OPT_TYPE_INT , { .i64 = -1 }, -1, INT_MAX, FLAGS },
2328  { "cluster_time_limit", "Store at most the provided number of milliseconds in a cluster.", OFFSET(cluster_time_limit), AV_OPT_TYPE_INT64, { .i64 = -1 }, -1, INT64_MAX, FLAGS },
2329  { "dash", "Create a WebM file conforming to WebM DASH specification", OFFSET(is_dash), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS },
2330  { "dash_track_number", "Track number for the DASH stream", OFFSET(dash_track_number), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 127, FLAGS },
2331  { "live", "Write files assuming it is a live stream.", OFFSET(is_live), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS },
2332  { "allow_raw_vfw", "allow RAW VFW mode", OFFSET(allow_raw_vfw), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS },
2333  { NULL },
2334 };
2335 
2336 #if CONFIG_MATROSKA_MUXER
2337 static const AVClass matroska_class = {
2338  .class_name = "matroska muxer",
2339  .item_name = av_default_item_name,
2340  .option = options,
2341  .version = LIBAVUTIL_VERSION_INT,
2342 };
2343 
2344 AVOutputFormat ff_matroska_muxer = {
2345  .name = "matroska",
2346  .long_name = NULL_IF_CONFIG_SMALL("Matroska"),
2347  .mime_type = "video/x-matroska",
2348  .extensions = "mkv",
2349  .priv_data_size = sizeof(MatroskaMuxContext),
2350  .audio_codec = CONFIG_LIBVORBIS_ENCODER ?
2352  .video_codec = CONFIG_LIBX264_ENCODER ?
2354  .init = mkv_init,
2360  .codec_tag = (const AVCodecTag* const []){
2363  },
2364  .subtitle_codec = AV_CODEC_ID_ASS,
2365  .query_codec = mkv_query_codec,
2366  .check_bitstream = mkv_check_bitstream,
2367  .priv_class = &matroska_class,
2368 };
2369 #endif
2370 
2371 #if CONFIG_WEBM_MUXER
2372 static const AVClass webm_class = {
2373  .class_name = "webm muxer",
2374  .item_name = av_default_item_name,
2375  .option = options,
2376  .version = LIBAVUTIL_VERSION_INT,
2377 };
2378 
2379 AVOutputFormat ff_webm_muxer = {
2380  .name = "webm",
2381  .long_name = NULL_IF_CONFIG_SMALL("WebM"),
2382  .mime_type = "video/webm",
2383  .extensions = "webm",
2384  .priv_data_size = sizeof(MatroskaMuxContext),
2385  .audio_codec = CONFIG_LIBOPUS_ENCODER ? AV_CODEC_ID_OPUS : AV_CODEC_ID_VORBIS,
2386  .video_codec = CONFIG_LIBVPX_VP9_ENCODER? AV_CODEC_ID_VP9 : AV_CODEC_ID_VP8,
2387  .subtitle_codec = AV_CODEC_ID_WEBVTT,
2388  .init = mkv_init,
2392  .check_bitstream = mkv_check_bitstream,
2395  .priv_class = &webm_class,
2396 };
2397 #endif
2398 
2399 #if CONFIG_MATROSKA_AUDIO_MUXER
2400 static const AVClass mka_class = {
2401  .class_name = "matroska audio muxer",
2402  .item_name = av_default_item_name,
2403  .option = options,
2404  .version = LIBAVUTIL_VERSION_INT,
2405 };
2406 AVOutputFormat ff_matroska_audio_muxer = {
2407  .name = "matroska",
2408  .long_name = NULL_IF_CONFIG_SMALL("Matroska Audio"),
2409  .mime_type = "audio/x-matroska",
2410  .extensions = "mka",
2411  .priv_data_size = sizeof(MatroskaMuxContext),
2412  .audio_codec = CONFIG_LIBVORBIS_ENCODER ?
2413  AV_CODEC_ID_VORBIS : AV_CODEC_ID_AC3,
2414  .video_codec = AV_CODEC_ID_NONE,
2415  .init = mkv_init,
2419  .check_bitstream = mkv_check_bitstream,
2422  .codec_tag = (const AVCodecTag* const []){
2424  },
2425  .priv_class = &mka_class,
2426 };
2427 #endif
unsigned int nb_chapters
Number of chapters in AVChapter array.
Definition: avformat.h:1535
static int mkv_write_packet_internal(AVFormatContext *s, AVPacket *pkt, int add_cue)
Definition: matroskaenc.c:1948
Definition: lfg.h:25
#define MATROSKA_ID_SEEKPREROLL
Definition: matroska.h:95
void av_sha_final(AVSHA *ctx, uint8_t *digest)
Finish hashing and output digest value.
Definition: sha.c:341
internal header for HEVC (de)muxer utilities
#define AV_DISPOSITION_METADATA
Definition: avformat.h:865
void avio_wb64(AVIOContext *s, uint64_t val)
Definition: aviobuf.c:440
#define NULL
Definition: coverity.c:32
static int mkv_write_vtt_blocks(AVFormatContext *s, AVIOContext *pb, AVPacket *pkt)
Definition: matroskaenc.c:1873
const char const char void * val
Definition: avisynth_c.h:771
#define MATROSKA_ID_BLOCKADDID
Definition: matroska.h:223
#define MATROSKA_ID_TRACKDEFAULTDURATION
Definition: matroska.h:104
void avio_wl16(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:446
static void put_ebml_size_unknown(AVIOContext *pb, int bytes)
Write an EBML size meaning "unknown size".
Definition: matroskaenc.c:176
const char * s
Definition: avisynth_c.h:768
Bytestream IO Context.
Definition: avio.h:147
enum AVColorTransferCharacteristic color_trc
Definition: avcodec.h:4057
#define MATROSKA_ID_VIDEOFLAGINTERLACED
Definition: matroska.h:121
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
#define MATROSKA_ID_VIDEOCOLOR_GX
Definition: matroska.h:147
enum AVCodecID codec_id
Definition: ffmpeg_vaapi.c:149
void ff_metadata_conv_ctx(AVFormatContext *ctx, const AVMetadataConv *d_conv, const AVMetadataConv *s_conv)
Definition: metadata.c:59
#define MATROSKA_ID_DATEUTC
Definition: matroska.h:71
int sizebytes
how many bytes were reserved for the size
Definition: matroskaenc.c:60
#define MAX_TRACKS
Maximum number of tracks allowed in a Matroska file (with track numbers in range 1 to 126 (inclusive)...
Definition: matroskaenc.c:103
The optional first identifier line of a WebVTT cue.
Definition: avcodec.h:1512
uint32_t samples
Definition: wv.h:39
int initial
Definition: wv.h:43
void av_sha_update(AVSHA *ctx, const uint8_t *data, unsigned int len)
Update hash value.
Definition: sha.c:314
#define MATROSKA_ID_TRACKFLAGLACING
Definition: matroska.h:101
#define MATROSKA_ID_TRACKENTRY
Definition: matroska.h:75
#define MATROSKA_ID_VIDEODISPLAYHEIGHT
Definition: matroska.h:113
static void mkv_start_new_cluster(AVFormatContext *s, AVPacket *pkt)
Definition: matroskaenc.c:1926
int avio_close_dyn_buf(AVIOContext *s, uint8_t **pbuffer)
Return the written size and a pointer to the buffer.
Definition: aviobuf.c:1278
AVOption.
Definition: opt.h:245
hash context
Definition: sha.c:34
int64_t cluster_pos
file offset of the cluster containing the block
Definition: matroskaenc.c:81
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:101
int ff_put_wav_header(AVFormatContext *s, AVIOContext *pb, AVCodecParameters *par, int flags)
Write WAVEFORMAT header structure.
Definition: riffenc.c:54
static int mkv_init(struct AVFormatContext *s)
Definition: matroskaenc.c:2260
enum AVCodecID id
Definition: mxfenc.c:104
#define MATROSKA_ID_CUETRACKPOSITION
Definition: matroska.h:185
enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
Definition: utils.c:3002
#define MATROSKA_ID_CODECPRIVATE
Definition: matroska.h:89
av_cold int av_sha_init(AVSHA *ctx, int bits)
Initialize SHA-1 or SHA-2 hashing.
Definition: sha.c:273
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
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:4549
int av_parse_time(int64_t *timeval, const char *timestr, int duration)
Parse timestr and return in *time a corresponding number of microseconds.
Definition: parseutils.c:559
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
#define MATROSKA_ID_AUDIOBITDEPTH
Definition: matroska.h:160
#define MATROSKA_ID_TRACKFLAGDEFAULT
Definition: matroska.h:99
static const AVCodecTag additional_subtitle_tags[]
Definition: matroskaenc.c:2317
This side data should be associated with a video stream and contains Stereoscopic 3D information in f...
Definition: avcodec.h:1430
static int mkv_write_attachments(AVFormatContext *s)
Definition: matroskaenc.c:1413
uint64_t pts
Definition: matroskaenc.c:78
static int mkv_write_video_color(AVIOContext *pb, AVCodecParameters *par, AVStream *st)
Definition: matroskaenc.c:736
AVRational white_point[2]
CIE 1931 xy chromaticity coords of white point.
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: avcodec.h:3969
int size
Definition: avcodec.h:1601
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
Definition: aviobuf.c:230
#define MATROSKA_ID_FILEDATA
Definition: matroska.h:239
AVFormatInternal * internal
An opaque field for libavformat internal usage.
Definition: avformat.h:1759
#define EBML_ID_DOCTYPEREADVERSION
Definition: matroska.h:42
#define MATROSKA_ID_BLOCKREFERENCE
Definition: matroska.h:230
int av_log2(unsigned v)
Definition: intmath.c:26
static int mkv_write_header(AVFormatContext *s)
Definition: matroskaenc.c:1521
#define MATROSKA_ID_TRACKTYPE
Definition: matroska.h:80
enum AVMediaType codec_type
Definition: rtp.c:37
#define MATROSKA_ID_TAGTARGETS_CHAPTERUID
Definition: matroska.h:206
int ff_flac_is_native_layout(uint64_t channel_layout)
int64_t duration
duration of the block according to time base
Definition: matroskaenc.c:83
static av_always_inline uint64_t av_double2int(double f)
Reinterpret a double as a 64-bit integer.
Definition: intfloat.h:70
#define MATROSKA_ID_VIDEOCOLOR_RX
Definition: matroska.h:145
#define MATROSKA_ID_MUXINGAPP
Definition: matroska.h:70
int64_t cluster_time_limit
Definition: matroskaenc.c:128
#define MATROSKA_ID_AUDIOCHANNELS
Definition: matroska.h:161
int has_primaries
Flag indicating whether the display primaries (and white point) are set.
unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum AVCodecID id)
Definition: utils.c:2992
int64_t segment_offset
Definition: matroskaenc.c:87
int version
Definition: avisynth_c.h:766
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:252
uint64_t_TMPL AV_RL64
Definition: bytestream.h:87
int avoid_negative_ts_use_pts
Definition: internal.h:121
const char * master
Definition: vf_curves.c:114
AVPacketSideData * side_data
An array of side data that applies to the whole stream (i.e.
Definition: avformat.h:988
static AVPacket pkt
#define av_le2ne32(x)
Definition: bswap.h:96
#define MATROSKA_ID_CUECLUSTERPOSITION
Definition: matroska.h:189
#define MATROSKA_ID_VIDEOCOLOR_LUMINANCEMAX
Definition: matroska.h:153
Definition: matroskaenc.c:63
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_WB32 unsigned int_TMPL AV_WB24 unsigned int_TMPL AV_RB16
Definition: bytestream.h:87
AVDictionary * metadata
Definition: avformat.h:1291
mkv_track * tracks
Definition: matroskaenc.c:118
#define AVFMT_ALLOW_FLUSH
Format allows flushing.
Definition: avformat.h:495
Views are next to each other.
Definition: stereo3d.h:45
#define MATROSKA_ID_EDITIONFLAGDEFAULT
Definition: matroska.h:253
#define MATROSKA_ID_CLUSTERTIMECODE
Definition: matroska.h:217
int avio_open_dyn_buf(AVIOContext **s)
Open a write only memory stream.
Definition: aviobuf.c:1266
#define EBML_ID_DOCTYPE
Definition: matroska.h:40
#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:3961
#define MATROSKA_ID_CHAPTERTIMEEND
Definition: matroska.h:246
enum AVColorSpace color_space
Definition: avcodec.h:4058
int64_t pos
absolute offset in the file where the master's elements start
Definition: matroskaenc.c:59
MatroskaVideoStereoModeType
Definition: matroska.h:293
Mastering display metadata (based on SMPTE-2086:2014).
Definition: avcodec.h:1538
int ff_vorbiscomment_write(uint8_t **p, AVDictionary **m, const char *vendor_string)
Write a VorbisComment into a buffer.
Definition: vorbiscomment.c:54
#define FLAGS
Definition: matroskaenc.c:2324
#define MATROSKA_ID_FILEDESC
Definition: matroska.h:236
Format I/O context.
Definition: avformat.h:1330
UID uid
Definition: mxfenc.c:1821
static void write_packet(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
Definition: ffmpeg.c:634
char str[32]
Definition: internal.h:50
int64_t cluster_pos
file offset of the current cluster
Definition: matroskaenc.c:112
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
Definition: log.h:72
#define AV_WB64(p, v)
Definition: intreadwrite.h:433
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
static const AVCodecTag additional_audio_tags[]
Definition: matroskaenc.c:2292
Public dictionary API.
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:102
void avio_wl32(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:346
uint8_t
#define MATROSKA_ID_VIDEOCOLOR_BX
Definition: matroska.h:149
#define MATROSKA_ID_CHAPLANG
Definition: matroska.h:249
#define av_malloc(s)
static int mkv_write_tag(AVFormatContext *s, AVDictionary *m, unsigned int elementid, unsigned int uid, ebml_master *tags)
Definition: matroskaenc.c:1322
mode
Definition: f_perms.c:27
AVOptions.
#define MATROSKA_ID_TRACKLANGUAGE
Definition: matroska.h:97
Stereo 3D type: this structure describes how two videos are packed within a single video surface...
Definition: stereo3d.h:123
const AVCodecTag ff_codec_movvideo_tags[]
Definition: isom.c:72
static int ebml_id_size(unsigned int id)
Definition: matroskaenc.c:159
#define OPUS_SEEK_PREROLL
Seek preroll value for opus.
Definition: matroskaenc.c:157
uint32_t flags
Definition: wv.h:40
int ff_mkv_stereo3d_conv(AVStream *st, MatroskaVideoStereoModeType stereo_mode)
Definition: matroska.c:151
uint64_t segmentpos
Definition: matroskaenc.c:65
int id
unique ID to identify the chapter
Definition: avformat.h:1288
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
Definition: avcodec.h:1618
#define MATROSKA_ID_TIMECODESCALE
Definition: matroska.h:66
static int mkv_write_codecprivate(AVFormatContext *s, AVIOContext *pb, AVCodecParameters *par, int native_id, int qt_id)
Definition: matroskaenc.c:667
#define MATROSKA_ID_SIMPLEBLOCK
Definition: matroska.h:225
#define MATROSKA_ID_EDITIONFLAGHIDDEN
Definition: matroska.h:252
int nb_side_data
The number of elements in the AVStream.side_data array.
Definition: avformat.h:992
void avio_write_marker(AVIOContext *s, int64_t time, enum AVIODataMarkerType type)
Mark the written bytestream as a specific type.
Definition: aviobuf.c:470
uint8_t * av_stream_get_side_data(const AVStream *stream, enum AVPacketSideDataType type, int *size)
Get side information from stream.
Definition: utils.c:5066
#define MATROSKA_ID_BLOCKMORE
Definition: matroska.h:222
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_RB32
Definition: bytestream.h:87
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1398
int64_t duration
Definition: movenc.c:63
#define MATROSKA_ID_CUERELATIVEPOSITION
Definition: matroska.h:190
A point in the output bytestream where a demuxer can start parsing (for non self synchronizing bytest...
Definition: avio.h:120
#define MATROSKA_ID_AUDIOOUTSAMPLINGFREQ
Definition: matroska.h:158
#define MATROSKA_ID_VIDEOCOLOR
Definition: matroska.h:127
int initial_padding
Audio only.
Definition: avcodec.h:4098
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:1441
uint8_t * data
Definition: avcodec.h:1600
static double av_q2d(AVRational a)
Convert an AVRational to a double.
Definition: rational.h:104
static int64_t mkv_write_cues(AVFormatContext *s, mkv_cues *cues, mkv_track *tracks, int num_tracks)
Definition: matroskaenc.c:469
#define MATROSKA_ID_VIDEODISPLAYWIDTH
Definition: matroska.h:112
#define MATROSKA_ID_BLOCKADDITIONS
Definition: matroska.h:221
uint32_t tag
Definition: movenc.c:1378
Not part of ABI.
Definition: pixfmt.h:460
#define WV_HEADER_SIZE
Definition: wavpack.h:30
enum AVCodecID id
Definition: internal.h:51
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:192
uint8_t * data
Definition: avcodec.h:1544
#define MATROSKA_ID_CUES
Definition: matroska.h:58
int64_t ts_offset
Definition: matroskaenc.c:95
ptrdiff_t size
Definition: opengl_enc.c:101
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
Definition: avio.h:511
int has_luminance
Flag indicating whether the luminance (min_ and max_) have been set.
static const uint8_t header[24]
Definition: sdr2.c:67
#define MATROSKA_ID_TRACKNUMBER
Definition: matroska.h:78
#define MATROSKA_ID_VIDEOCOLOR_WHITEY
Definition: matroska.h:152
void avio_write(AVIOContext *s, const unsigned char *buf, int size)
Definition: aviobuf.c:204
Definition: wv.h:34
#define AVFMT_FLAG_BITEXACT
When muxing, try to avoid writing any random/volatile data to the output.
Definition: avformat.h:1458
Views are alternated temporally.
Definition: stereo3d.h:66
void * av_realloc_array(void *ptr, size_t nmemb, size_t size)
Definition: mem.c:208
#define MATROSKA_ID_SEGMENTUID
Definition: matroska.h:72
uint64_t channel_layout
Audio only.
Definition: avcodec.h:4071
static void put_ebml_num(AVIOContext *pb, uint64_t num, int bytes)
Write a number in EBML variable length format.
Definition: matroskaenc.c:200
#define av_log(a,...)
int has_cue
Definition: matroskaenc.c:94
#define AV_DISPOSITION_CAPTIONS
To specify text track kind (different from subtitles default).
Definition: avformat.h:863
static int mkv_add_seekhead_entry(mkv_seekhead *seekhead, unsigned int elementid, uint64_t filepos)
Definition: matroskaenc.c:363
int64_t segment_offset
the file offset to the beginning of the segment
Definition: matroskaenc.c:70
struct AVOutputFormat * oformat
The output container format.
Definition: avformat.h:1349
int av_packet_ref(AVPacket *dst, const AVPacket *src)
Setup a new reference to the data described by a given packet.
Definition: avpacket.c:576
#define FF_COMPLIANCE_UNOFFICIAL
Allow unofficial extensions.
Definition: avcodec.h:2897
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: avcodec.h:1632
static int get_aac_sample_rates(AVFormatContext *s, AVCodecParameters *par, int *sample_rate, int *output_sample_rate)
Definition: matroskaenc.c:610
#define MATROSKA_ID_TRACKUID
Definition: matroska.h:79
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
ebml_master segment
Definition: matroskaenc.c:109
static int mkv_write_simpletag(AVIOContext *pb, AVDictionaryEntry *t)
Definition: matroskaenc.c:1254
#define MATROSKA_ID_VIDEOSTEREOMODE
Definition: matroska.h:123
uint32_t chapter_id_offset
Definition: matroskaenc.c:133
int ff_parse_creation_time_metadata(AVFormatContext *s, int64_t *timestamp, int return_seconds)
Parse creation_time in AVFormatContext metadata if exists and warn if the parsing fails...
Definition: utils.c:5251
AVPacket cur_audio_pkt
Definition: matroskaenc.c:120
AVCodecID
Identify the syntax and semantics of the bitstream.
Definition: avcodec.h:191
static int mkv_write_tags(AVFormatContext *s)
Definition: matroskaenc.c:1356
#define MATROSKA_ID_VIDEOCOLOR_BY
Definition: matroska.h:150
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
int av_get_bits_per_sample(enum AVCodecID codec_id)
Return codec bits per sample.
Definition: utils.c:3473
AVDictionary * metadata
Metadata that applies to the whole file.
Definition: avformat.h:1546
int flags
Additional information about the frame packing.
Definition: stereo3d.h:132
#define MATROSKA_ID_BLOCKDURATION
Definition: matroska.h:229
#define EBML_ID_EBMLREADVERSION
Definition: matroska.h:37
#define MAX_CUETRACKPOS_SIZE
per-cuepoint-track - 5 1-byte EBML IDs, 5 1-byte EBML sizes, 4 8-byte uint max
Definition: matroskaenc.c:151
#define MATROSKA_ID_VIDEOCOLOR_WHITEX
Definition: matroska.h:151
av_default_item_name
#define AVERROR(e)
Definition: error.h:43
unsigned int elementid
Definition: matroskaenc.c:64
int reserved_size
-1 if appending to file
Definition: matroskaenc.c:71
#define MATROSKA_ID_CLUSTER
Definition: matroska.h:62
const char * ff_convert_lang_to(const char *lang, enum AVLangCodespace target_codespace)
Convert a language code to a target codespace.
Definition: avlanguage.c:736
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:176
enum AVColorPrimaries color_primaries
Definition: avcodec.h:4056
#define MATROSKA_ID_FILEMIMETYPE
Definition: matroska.h:238
#define MATROSKA_ID_WRITINGAPP
Definition: matroska.h:69
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
Not part of ABI.
Definition: pixfmt.h:404
const char *const ff_matroska_video_stereo_mode[MATROSKA_VIDEO_STEREOMODE_TYPE_NB]
Definition: matroska.c:127
void av_dict_free(AVDictionary **pm)
Free all the memory allocated for an AVDictionary struct and all keys and values. ...
Definition: dict.c:203
static int mkv_blockgroup_size(int pkt_size)
Definition: matroskaenc.c:1710
enum AVMediaType codec_type
General type of the encoded data.
Definition: avcodec.h:3965
static int ebml_num_size(uint64_t num)
Calculate how many bytes are needed to represent a given number in EBML.
Definition: matroskaenc.c:186
int write_dts
Definition: matroskaenc.c:93
int final
Definition: wv.h:43
AVChapter ** chapters
Definition: avformat.h:1536
enum AVCodecID id
Definition: matroska.h:318
enum AVPacketSideDataType type
Definition: avcodec.h:1546
enum AVMediaType avcodec_get_type(enum AVCodecID codec_id)
Get the type of the given codec.
Definition: codec_desc.c:3000
static int mkv_write_chapters(AVFormatContext *s)
Definition: matroskaenc.c:1202
static int mkv_check_tag(AVDictionary *m, unsigned int elementid)
Definition: matroskaenc.c:1345
#define EBML_ID_EBMLMAXIDLENGTH
Definition: matroska.h:38
int64_t ff_vorbiscomment_length(AVDictionary *m, const char *vendor_string)
Calculate the length in bytes of a VorbisComment.
Definition: vorbiscomment.c:41
#define MATROSKA_ID_CHAPTERFLAGHIDDEN
Definition: matroska.h:256
static const uint8_t offset[127][2]
Definition: vf_spp.c:92
uint32_t crc
Definition: wv.h:41
void ff_put_bmp_header(AVIOContext *pb, AVCodecParameters *par, const AVCodecTag *tags, int for_asf, int ignore_extradata)
Definition: riffenc.c:207
const AVCodecTag ff_codec_wav_tags[]
Definition: riff.c:435
#define FFMAX(a, b)
Definition: common.h:94
static mkv_seekhead * mkv_start_seekhead(AVIOContext *pb, int64_t segment_offset, int numelements)
Initialize a mkv_seekhead element to be ready to index level 1 Matroska elements. ...
Definition: matroskaenc.c:342
int ff_avc_parse_nal_units_buf(const uint8_t *buf_in, uint8_t **buf, int *size)
Definition: avc.c:92
AVRational max_luminance
Max luminance of mastering display (cd/m^2).
int64_t filepos
Definition: matroskaenc.c:69
static void * av_mallocz_array(size_t nmemb, size_t size)
Definition: mem.h:226
#define fail()
Definition: checkasm.h:82
int flags
A combination of AV_PKT_FLAG values.
Definition: avcodec.h:1606
int extradata_size
Size of the extradata content in bytes.
Definition: avcodec.h:3987
static void mkv_write_field_order(AVIOContext *pb, enum AVFieldOrder field_order)
Definition: matroskaenc.c:794
const CodecMime ff_mkv_mime_tags[]
Definition: matroska.c:111
#define MATROSKA_ID_TAG
Definition: matroska.h:195
#define AV_DISPOSITION_FORCED
Track should be used during playback by default.
Definition: avformat.h:846
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
Definition: avformat.h:1386
#define LIBAVFORMAT_IDENT
Definition: version.h:46
Views are packed per line, as if interlaced.
Definition: stereo3d.h:97
int seekable
A combination of AVIO_SEEKABLE_ flags or 0 when the stream is not seekable.
Definition: avio.h:243
int void avio_flush(AVIOContext *s)
Force flushing of buffered data.
Definition: aviobuf.c:224
#define MATROSKA_ID_VIDEOCOLOR_LUMINANCEMIN
Definition: matroska.h:154
audio channel layout utility functions
#define EBML_ID_EBMLVERSION
Definition: matroska.h:36
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
mkv_cuepoint * entries
Definition: matroskaenc.c:88
void ffio_fill(AVIOContext *s, int b, int count)
Definition: aviobuf.c:190
#define AV_TIME_BASE
Internal time base represented as integer.
Definition: avutil.h:248
#define MATROSKA_ID_TAGTARGETS
Definition: matroska.h:202
const AVCodecTag ff_codec_bmp_tags[]
Definition: riff.c:32
int av_strcasecmp(const char *a, const char *b)
Locale-independent case-insensitive compare.
Definition: avstring.c:213
#define MATROSKA_ID_TAGNAME
Definition: matroska.h:197
AVRational min_luminance
Min luminance of mastering display (cd/m^2).
static int put_wv_codecpriv(AVIOContext *pb, AVCodecParameters *par)
Definition: matroskaenc.c:554
static void mkv_free(MatroskaMuxContext *mkv)
Free the members allocated in the mux context.
Definition: matroskaenc.c:317
#define MATROSKA_ID_CHAPTERFLAGENABLED
Definition: matroska.h:257
static int64_t mkv_write_seekhead(AVIOContext *pb, MatroskaMuxContext *mkv)
Write the seek head to the file and free it.
Definition: matroskaenc.c:391
static int64_t get_metadata_duration(AVFormatContext *s)
Definition: matroskaenc.c:1497
static int write_trailer(AVFormatContext *s1)
Definition: v4l2enc.c:94
static void bit_depth(AudioStatsContext *s, uint64_t mask, uint64_t imask, AVRational *depth)
Definition: af_astats.c:150
#define AVFMT_GLOBALHEADER
Format wants global header.
Definition: avformat.h:485
int ff_wv_parse_header(WvHeader *wv, const uint8_t *data)
Parse a WavPack block header.
Definition: wv.c:29
int ff_hevc_annexb2mp4_buf(const uint8_t *buf_in, uint8_t **buf_out, int *size, int filter_ps, int *ps_count)
Writes Annex B formatted HEVC NAL units to a data buffer.
Definition: hevc.c:1077
#define MATROSKA_ID_SIMPLETAG
Definition: matroska.h:196
const char * name
Definition: avformat.h:524
internal header for RIFF based (de)muxers do NOT include this in end user applications ...
#define AV_WB24(p, d)
Definition: intreadwrite.h:450
int ff_flac_write_header(AVIOContext *pb, uint8_t *extradata, int extradata_size, int last_block)
int avoid_negative_ts
Avoid negative timestamps during muxing.
Definition: avformat.h:1637
#define MATROSKA_ID_CHAPTERATOM
Definition: matroska.h:244
int avpriv_split_xiph_headers(const uint8_t *extradata, int extradata_size, int first_header_size, const uint8_t *header_start[3], int header_len[3])
Split a single extradata buffer into the three headers that most Xiph codecs use. ...
Definition: xiph.c:24
AVDictionary * metadata
Definition: avformat.h:950
enum AVColorRange color_range
Video only.
Definition: avcodec.h:4055
Opaque data information usually sparse.
Definition: avutil.h:199
#define MATROSKA_ID_VIDEOCOLORSPACE
Definition: matroska.h:126
#define MATROSKA_ID_CHAPTERS
Definition: matroska.h:63
#define EBML_ID_VOID
Definition: matroska.h:45
#define src
Definition: vp9dsp.c:530
#define OFFSET(x)
Definition: matroskaenc.c:2323
#define AV_STEREO3D_FLAG_INVERT
Inverted views, Right/Bottom represents the left view.
Definition: stereo3d.h:114
#define MATROSKA_ID_AUDIOSAMPLINGFREQ
Definition: matroska.h:157
const char * avcodec_get_name(enum AVCodecID id)
Get the name of a codec.
Definition: utils.c:3098
Views are packed per column.
Definition: stereo3d.h:107
static int mkv_add_cuepoint(mkv_cues *cues, int stream, int tracknum, int64_t ts, int64_t cluster_pos, int64_t relative_pos, int64_t duration)
Definition: matroskaenc.c:446
static void put_ebml_float(AVIOContext *pb, unsigned int elementid, double val)
Definition: matroskaenc.c:245
Stream structure.
Definition: avformat.h:881
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:62
static void put_ebml_string(AVIOContext *pb, unsigned int elementid, const char *str)
Definition: matroskaenc.c:260
int64_t end
chapter start/end time in time_base units
Definition: avformat.h:1290
static int mkv_write_track(AVFormatContext *s, MatroskaMuxContext *mkv, int i, AVIOContext *pb, int default_stream_exists)
Definition: matroskaenc.c:931
#define AV_DISPOSITION_DEFAULT
Definition: avformat.h:834
sample_rate
enum AVStereo3DType type
How views are packed within the video.
Definition: stereo3d.h:127
#define MATROSKA_ID_VIDEOCOLORMATRIXCOEFF
Definition: matroska.h:129
#define AV_DISPOSITION_DESCRIPTIONS
Definition: avformat.h:864
char * av_strdup(const char *s)
Duplicate a string.
Definition: mem.c:267
#define MATROSKA_ID_TRACKFLAGFORCED
Definition: matroska.h:100
#define MATROSKA_ID_TAGS
Definition: matroska.h:59
#define MATROSKA_ID_VIDEOCOLORPRIMARIES
Definition: matroska.h:140
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_WB32 unsigned int_TMPL AV_RB24
Definition: bytestream.h:87
#define AV_TIME_BASE_Q
Internal time base represented as fractional value.
Definition: avutil.h:254
#define MATROSKA_ID_SEEKID
Definition: matroska.h:213
AVIOContext * pb
I/O context.
Definition: avformat.h:1372
void avio_w8(AVIOContext *s, int b)
Definition: aviobuf.c:182
Public header for SHA-1 & SHA-256 hash function implementations.
#define MATROSKA_ID_BLOCK
Definition: matroska.h:228
#define MATROSKA_ID_INFO
Definition: matroska.h:56
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
Definition: avpacket.c:567
#define MATROSKA_ID_TAGTARGETS_TRACKUID
Definition: matroska.h:205
static const EbmlSyntax ebml_header[]
Definition: matroskadec.c:367
#define MATROSKA_ID_TAGLANG
Definition: matroska.h:199
static int mkv_check_tag_name(const char *name, unsigned int elementid)
Definition: matroskaenc.c:1311
struct AVSHA * av_sha_alloc(void)
Allocate an AVSHA context.
Definition: sha.c:45
static unsigned int av_lfg_get(AVLFG *c)
Get the next random unsigned 32-bit number using an ALFG.
Definition: lfg.h:38
#define MATROSKA_ID_TRACKS
Definition: matroska.h:57
void * buf
Definition: avisynth_c.h:690
Data found in BlockAdditional element of matroska container.
Definition: avcodec.h:1507
GLint GLenum type
Definition: opengl_enc.c:105
#define MATROSKA_ID_TRACKNAME
Definition: matroska.h:96
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 MATROSKA_ID_SEEKENTRY
Definition: matroska.h:210
static const char * format
Definition: movenc.c:47
Describe the class of an AVClass context structure.
Definition: log.h:67
#define MATROSKA_ID_EDITIONENTRY
Definition: matroska.h:243
#define FF_COMPLIANCE_NORMAL
Definition: avcodec.h:2896
#define MAX_CUEPOINT_SIZE(num_tracks)
per-cuepoint - 2 1-byte EBML IDs, 2 1-byte EBML sizes, 8-byte uint max
Definition: matroskaenc.c:154
#define MATROSKA_ID_BLOCKGROUP
Definition: matroska.h:220
#define MATROSKA_ID_VIDEOPIXELHEIGHT
Definition: matroska.h:115
static int mkv_write_tracks(AVFormatContext *s)
Definition: matroskaenc.c:1177
Rational number (pair of numerator and denominator).
Definition: rational.h:58
Copyright (c) 2016 Neil Birkbeck neil.birkbeck@gmail.com
static void put_ebml_uint(AVIOContext *pb, unsigned int elementid, uint64_t val)
Definition: matroskaenc.c:219
#define MATROSKA_ID_CUEDURATION
Definition: matroska.h:191
#define MATROSKA_ID_CUETIME
Definition: matroska.h:184
Not part of ABI.
Definition: pixfmt.h:430
AVFieldOrder
Definition: avcodec.h:1653
Recommmends skipping the specified number of samples.
Definition: avcodec.h:1472
AVIOContext * dyn_bc
Definition: matroskaenc.c:108
AVMediaType
Definition: avutil.h:193
av_cold void av_lfg_init(AVLFG *c, unsigned int seed)
Definition: lfg.c:30
int64_t duration_offset
Definition: matroskaenc.c:114
#define MATROSKA_ID_VIDEOCOLORTRANSFERCHARACTERISTICS
Definition: matroska.h:138
#define MATROSKA_ID_TITLE
Definition: matroska.h:68
#define snprintf
Definition: snprintf.h:34
#define MATROSKA_ID_TRACKVIDEO
Definition: matroska.h:81
static int mkv_strip_wavpack(const uint8_t *src, uint8_t **pdst, int *size)
Definition: matroskaenc.c:1721
static void put_ebml_id(AVIOContext *pb, unsigned int id)
Definition: matroskaenc.c:164
#define MATROSKA_ID_VIDEOCOLORMASTERINGMETA
Definition: matroska.h:144
misc parsing utilities
AVRational display_primaries[3][2]
CIE 1931 xy chromaticity coords of color primaries (r, g, b order).
static void put_ebml_sint(AVIOContext *pb, unsigned int elementid, int64_t val)
Definition: matroskaenc.c:232
#define MATROSKA_ID_ATTACHMENTS
Definition: matroska.h:61
static int64_t pts
Global timestamp for the audio frames.
void avio_wb16(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:452
int64_t * stream_duration_offsets
Definition: matroskaenc.c:139
#define MATROSKA_ID_CHAPTERDISPLAY
Definition: matroska.h:247
static int put_xiph_codecpriv(AVFormatContext *s, AVIOContext *pb, AVCodecParameters *par)
Definition: matroskaenc.c:526
static int flags
Definition: cpu.c:47
int bits_per_raw_sample
This is the number of valid bits in each output sample.
Definition: avcodec.h:4024
#define MATROSKA_ID_FILENAME
Definition: matroska.h:237
int av_get_bytes_per_sample(enum AVSampleFormat sample_fmt)
Return number of bytes per sample.
Definition: samplefmt.c:106
#define MATROSKA_ID_BLOCKADDITIONAL
Definition: matroska.h:224
const AVMetadataConv ff_mkv_metadata_conv[]
Definition: matroska.c:121
#define MATROSKA_ID_CODECID
Definition: matroska.h:88
static const AVCodecTag additional_video_tags[]
Definition: matroskaenc.c:2308
static int put_flac_codecpriv(AVFormatContext *s, AVIOContext *pb, AVCodecParameters *par)
Definition: matroskaenc.c:563
#define MATROSKA_ID_VIDEOFIELDORDER
Definition: matroska.h:122
int64_t start
Definition: avformat.h:1290
static av_always_inline AVRational av_inv_q(AVRational q)
Invert a rational.
Definition: rational.h:159
int sample_rate
Audio only.
Definition: avcodec.h:4079
#define MATROSKA_ID_VIDEOALPHAMODE
Definition: matroska.h:124
static int av_cmp_q(AVRational a, AVRational b)
Compare two rationals.
Definition: rational.h:89
static int mkv_write_trailer(AVFormatContext *s)
Definition: matroskaenc.c:2137
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_RB64
Definition: bytestream.h:87
Main libavformat public API header.
static int mkv_check_bitstream(struct AVFormatContext *s, const AVPacket *pkt)
Definition: matroskaenc.c:2277
attribute_deprecated int64_t convergence_duration
Definition: avcodec.h:1629
#define MATROSKA_ID_CUETRACK
Definition: matroska.h:188
#define MATROSKA_ID_SEEKPOSITION
Definition: matroska.h:214
int64_t last_track_timestamp[MAX_TRACKS]
Definition: matroskaenc.c:136
#define MATROSKA_ID_CODECDELAY
Definition: matroska.h:94
#define FF_DISABLE_DEPRECATION_WARNINGS
Definition: internal.h:80
#define MATROSKA_ID_CHAPTERTIMESTART
Definition: matroska.h:245
common internal api header.
#define MATROSKA_ID_VIDEOCOLORRANGE
Definition: matroska.h:137
static void put_ebml_binary(AVIOContext *pb, unsigned int elementid, const void *buf, int size)
Definition: matroskaenc.c:252
Utilties for rational number calculation.
Video is not stereoscopic (and metadata has to be there).
Definition: stereo3d.h:35
Views are packed in a checkerboard-like structure per pixel.
Definition: stereo3d.h:76
static double c[64]
static void mkv_write_block(AVFormatContext *s, AVIOContext *pb, unsigned int blockid, AVPacket *pkt, int keyframe)
Definition: matroskaenc.c:1774
static int mkv_write_flush_packet(AVFormatContext *s, AVPacket *pkt)
Definition: matroskaenc.c:2113
int disposition
AV_DISPOSITION_* bit field.
Definition: avformat.h:939
static void put_ebml_void(AVIOContext *pb, uint64_t size)
Write a void element of a given size.
Definition: matroskaenc.c:272
AVRational time_base
time base in which the start/end timestamps are specified
Definition: avformat.h:1289
void av_init_packet(AVPacket *pkt)
Initialize optional fields of a packet with default values.
Definition: avpacket.c:33
char * key
Definition: dict.h:86
uint8_t pi<< 24) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_U8,(uint64_t)((*(constuint8_t *) pi-0x80U))<< 56) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8,(*(constuint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8,(*(constuint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16,(*(constint16_t *) pi >>8)+0x80) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S16,(uint64_t)(*(constint16_t *) pi)<< 48) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16,*(constint16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16,*(constint16_t *) pi *(1.0/(1<< 15))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32,(*(constint32_t *) pi >>24)+0x80) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S32,(uint64_t)(*(constint32_t *) pi)<< 32) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32,*(constint32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32,*(constint32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S64,(*(constint64_t *) pi >>56)+0x80) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S64,*(constint64_t *) pi *(1.0f/(INT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S64,*(constint64_t *) pi *(1.0/(INT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, av_clip_uint8(lrintf(*(constfloat *) pi *(1<< 7))+0x80)) CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, av_clip_int16(lrintf(*(constfloat *) pi *(1<< 15)))) CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, av_clipl_int32(llrintf(*(constfloat *) pi *(1U<< 31)))) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_FLT, llrintf(*(constfloat *) pi *(INT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, av_clip_uint8(lrint(*(constdouble *) pi *(1<< 7))+0x80)) CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, av_clip_int16(lrint(*(constdouble *) pi *(1<< 15)))) CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, av_clipl_int32(llrint(*(constdouble *) pi *(1U<< 31)))) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_DBL, llrint(*(constdouble *) pi *(INT64_C(1)<< 63)))#defineFMT_PAIR_FUNC(out, in) staticconv_func_type *constfmt_pair_to_conv_functions[AV_SAMPLE_FMT_NB *AV_SAMPLE_FMT_NB]={FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S64),};staticvoidcpy1(uint8_t **dst, constuint8_t **src, intlen){memcpy(*dst,*src, len);}staticvoidcpy2(uint8_t **dst, constuint8_t **src, intlen){memcpy(*dst,*src, 2 *len);}staticvoidcpy4(uint8_t **dst, constuint8_t **src, intlen){memcpy(*dst,*src, 4 *len);}staticvoidcpy8(uint8_t **dst, constuint8_t **src, intlen){memcpy(*dst,*src, 8 *len);}AudioConvert *swri_audio_convert_alloc(enumAVSampleFormatout_fmt, enumAVSampleFormatin_fmt, intchannels, constint *ch_map, intflags){AudioConvert *ctx;conv_func_type *f=fmt_pair_to_conv_functions[av_get_packed_sample_fmt(out_fmt)+AV_SAMPLE_FMT_NB *av_get_packed_sample_fmt(in_fmt)];if(!f) returnNULL;ctx=av_mallocz(sizeof(*ctx));if(!ctx) returnNULL;if(channels==1){in_fmt=av_get_planar_sample_fmt(in_fmt);out_fmt=av_get_planar_sample_fmt(out_fmt);}ctx->channels=channels;ctx->conv_f=f;ctx->ch_map=ch_map;if(in_fmt==AV_SAMPLE_FMT_U8||in_fmt==AV_SAMPLE_FMT_U8P) memset(ctx->silence, 0x80, sizeof(ctx->silence));if(out_fmt==in_fmt &&!ch_map){switch(av_get_bytes_per_sample(in_fmt)){case1:ctx->simd_f=cpy1;break;case2:ctx->simd_f=cpy2;break;case4:ctx->simd_f=cpy4;break;case8:ctx->simd_f=cpy8;break;}}if(HAVE_YASM &&1) swri_audio_convert_init_x86(ctx, out_fmt, in_fmt, channels);if(ARCH_ARM) swri_audio_convert_init_arm(ctx, out_fmt, in_fmt, channels);if(ARCH_AARCH64) swri_audio_convert_init_aarch64(ctx, out_fmt, in_fmt, channels);returnctx;}voidswri_audio_convert_free(AudioConvert **ctx){av_freep(ctx);}intswri_audio_convert(AudioConvert *ctx, AudioData *out, AudioData *in, intlen){intch;intoff=0;constintos=(out->planar?1:out->ch_count)*out->bps;unsignedmisaligned=0;av_assert0(ctx->channels==out->ch_count);if(ctx->in_simd_align_mask){intplanes=in->planar?in->ch_count:1;unsignedm=0;for(ch=0;ch< planes;ch++) m|=(intptr_t) in->ch[ch];misaligned|=m &ctx->in_simd_align_mask;}if(ctx->out_simd_align_mask){intplanes=out->planar?out->ch_count:1;unsignedm=0;for(ch=0;ch< planes;ch++) m|=(intptr_t) out->ch[ch];misaligned|=m &ctx->out_simd_align_mask;}if(ctx->simd_f &&!ctx->ch_map &&!misaligned){off=len &~15;av_assert1(off >=0);av_assert1(off<=len);av_assert2(ctx->channels==SWR_CH_MAX||!in->ch[ctx->channels]);if(off >0){if(out->planar==in->planar){intplanes=out->planar?out->ch_count:1;for(ch=0;ch< planes;ch++){ctx->simd_f(out-> ch ch
Definition: audioconvert.c:56
#define MATROSKA_ID_SEGMENT
Definition: matroska.h:53
int avpriv_mpeg4audio_get_config(MPEG4AudioConfig *c, const uint8_t *buf, int bit_size, int sync_extension)
Parse MPEG-4 systems extradata to retrieve audio configuration.
Definition: mpeg4audio.c:81
The optional settings (rendering instructions) that immediately follow the timestamp specifier of a W...
Definition: avcodec.h:1518
#define MATROSKA_ID_SEEKHEAD
Definition: matroska.h:60
#define EBML_ID_HEADER
Definition: matroska.h:33
A point in the output bytestream where a decoder can start decoding (i.e.
Definition: avio.h:114
#define AVFMT_VARIABLE_FPS
Format allows variable fps.
Definition: avformat.h:489
ebml_master cluster
Definition: matroskaenc.c:111
#define av_free(p)
char * value
Definition: dict.h:87
#define FF_ENABLE_DEPRECATION_WARNINGS
Definition: internal.h:81
#define MATROSKA_ID_POINTENTRY
Definition: matroska.h:181
mkv_seekhead_entry * entries
Definition: matroskaenc.c:73
int len
static int mkv_write_native_codecprivate(AVFormatContext *s, AVCodecParameters *par, AVIOContext *dyn_cp)
Definition: matroskaenc.c:627
static int mkv_write_stereo_mode(AVFormatContext *s, AVIOContext *pb, AVStream *st, int mode, int *h_width, int *h_height)
Definition: matroskaenc.c:833
#define MATROSKA_ID_FILEUID
Definition: matroska.h:240
int ff_stream_add_bitstream_filter(AVStream *st, const char *name, const char *args)
Add a bitstream filter to a stream.
Definition: utils.c:5119
static int mkv_write_tag_targets(AVFormatContext *s, unsigned int elementid, unsigned int uid, ebml_master *tags, ebml_master *tag)
Definition: matroskaenc.c:1288
static uint8_t tmp[8]
Definition: des.c:38
void * priv_data
Format private data.
Definition: avformat.h:1358
#define MATROSKA_ID_CHAPTERUID
Definition: matroska.h:255
Views are on top of each other.
Definition: stereo3d.h:55
static void write_header(FFV1Context *f)
Definition: ffv1enc.c:344
int bits_per_coded_sample
The number of bits per sample in the codedwords.
Definition: avcodec.h:4011
int64_t relative_pos
relative offset from the position of the cluster containing the block
Definition: matroskaenc.c:82
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
Definition: avcodec.h:3983
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed...
Definition: avcodec.h:1599
static void mkv_flush_dynbuf(AVFormatContext *s)
Definition: matroskaenc.c:1911
static const AVOption options[]
Definition: matroskaenc.c:2325
#define EBML_ID_EBMLMAXSIZELENGTH
Definition: matroska.h:39
void avio_wb32(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:354
int64_t duration
Duration of the stream, in AV_TIME_BASE fractional seconds.
Definition: avformat.h:1425
#define MATROSKA_ID_CHAPSTRING
Definition: matroska.h:248
#define av_freep(p)
#define MATROSKA_ID_TAGSTRING
Definition: matroska.h:198
#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
uint8_t * av_packet_get_side_data(AVPacket *pkt, enum AVPacketSideDataType type, int *size)
Get side information from packet.
Definition: avpacket.c:338
#define MODE_MATROSKAv2
Definition: matroskaenc.c:98
uint32_t av_get_random_seed(void)
Get a seed to use in conjunction with random functions.
Definition: random_seed.c:114
int ff_isom_write_hvcc(AVIOContext *pb, const uint8_t *data, int size, int ps_array_completeness)
Writes HEVC extradata (parameter sets, declarative SEI NAL units) to the provided AVIOContext...
Definition: hevc.c:1093
const CodecMime ff_mkv_image_mime_tags[]
Definition: matroska.c:102
AVCodecParameters * codecpar
Definition: avformat.h:1233
#define MODE_WEBM
Definition: matroskaenc.c:99
uint32_t codec_tag
Additional information about the codec (corresponds to the AVI FOURCC).
Definition: avcodec.h:3973
static int mkv_write_packet(AVFormatContext *s, AVPacket *pkt)
Definition: matroskaenc.c:2038
#define MATROSKA_ID_DURATION
Definition: matroska.h:67
#define MAX_SEEKENTRY_SIZE
2 bytes * 3 for EBML IDs, 3 1-byte EBML lengths, 8 bytes for 64 bit offset, 4 bytes for target EBML I...
Definition: matroskaenc.c:147
static mkv_cues * mkv_start_cues(int64_t segment_offset)
Definition: matroskaenc.c:436
int stream_index
Definition: avcodec.h:1602
int num_entries
Definition: matroskaenc.c:89
#define EBML_ID_DOCTYPEVERSION
Definition: matroska.h:41
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
Definition: avformat.h:918
static void end_ebml_master(AVIOContext *pb, ebml_master master)
Definition: matroskaenc.c:298
int64_t segment_offset
Definition: matroskaenc.c:110
#define MATROSKA_ID_ATTACHEDFILE
Definition: matroska.h:235
#define MATROSKA_ID_VIDEOCOLOR_GY
Definition: matroska.h:148
static ebml_master start_ebml_master(AVIOContext *pb, unsigned int elementid, uint64_t expectedsize)
Definition: matroskaenc.c:289
mkv_seekhead * main_seekhead
Definition: matroskaenc.c:116
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_RL32
Definition: bytestream.h:87
This structure stores compressed data.
Definition: avcodec.h:1577
int64_t * stream_durations
Definition: matroskaenc.c:138
#define MATROSKA_ID_VIDEOCOLOR_RY
Definition: matroska.h:146
uint32_t blocksize
Definition: wv.h:35
static int mkv_query_codec(enum AVCodecID codec_id, int std_compliance)
Definition: matroskaenc.c:2243
static void put_xiph_size(AVIOContext *pb, int size)
Definition: matroskaenc.c:308
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: avcodec.h:1593
Not part of ABI.
Definition: pixfmt.h:448
#define MATROSKA_ID_VIDEOPIXELWIDTH
Definition: matroska.h:114
int ff_isom_write_avcc(AVIOContext *pb, const uint8_t *data, int len)
Definition: avc.c:106
#define MATROSKA_ID_TRACKAUDIO
Definition: matroska.h:82
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:242
const CodecTags ff_mkv_codec_tags[]
Definition: matroska.c:29
int avio_printf(AVIOContext *s, const char *fmt,...) av_printf_format(2
#define AV_WL32(p, v)
Definition: intreadwrite.h:426
#define MATROSKA_ID_DISCARDPADDING
Definition: matroska.h:232
#define FF_PUT_WAV_HEADER_FORCE_WAVEFORMATEX
Tell ff_put_wav_header() to use WAVEFORMATEX even for PCM codecs.
Definition: riff.h:53
const char * name
Definition: opengl_enc.c:103