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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"
44 #include "libavutil/mathematics.h"
45 #include "libavutil/opt.h"
46 #include "libavutil/random_seed.h"
47 #include "libavutil/samplefmt.h"
48 #include "libavutil/sha.h"
49 #include "libavutil/stereo3d.h"
50 
51 #include "libavcodec/xiph.h"
52 #include "libavcodec/mpeg4audio.h"
53 #include "libavcodec/internal.h"
54 
55 typedef struct ebml_master {
56  int64_t pos; ///< absolute offset in the file where the master's elements start
57  int sizebytes; ///< how many bytes were reserved for the size
58 } ebml_master;
59 
60 typedef struct mkv_seekhead_entry {
61  unsigned int elementid;
62  uint64_t segmentpos;
64 
65 typedef struct mkv_seekhead {
66  int64_t filepos;
67  int64_t segment_offset; ///< the file offset to the beginning of the segment
68  int reserved_size; ///< -1 if appending to file
72 } mkv_seekhead;
73 
74 typedef struct mkv_cuepoint {
75  uint64_t pts;
77  int tracknum;
78  int64_t cluster_pos; ///< file offset of the cluster containing the block
79  int64_t relative_pos; ///< relative offset from the position of the cluster containing the block
80  int64_t duration; ///< duration of the block according to time base
81 } mkv_cuepoint;
82 
83 typedef struct mkv_cues {
84  int64_t segment_offset;
87 } mkv_cues;
88 
89 typedef struct mkv_track {
90  int write_dts;
91  int has_cue;
92  int64_t ts_offset;
93 } mkv_track;
94 
95 #define MODE_MATROSKAv2 0x01
96 #define MODE_WEBM 0x02
97 
98 typedef struct MatroskaMuxContext {
99  const AVClass *class;
100  int mode;
103  int64_t segment_offset;
105  int64_t cluster_pos; ///< file offset of the current cluster
106  int64_t cluster_pts;
108  int64_t duration;
112 
114 
116 
119  int64_t cues_pos;
121  int is_dash;
123 
126 
129 
130 
131 /** 2 bytes * 3 for EBML IDs, 3 1-byte EBML lengths, 8 bytes for 64 bit
132  * offset, 4 bytes for target EBML ID */
133 #define MAX_SEEKENTRY_SIZE 21
134 
135 /** per-cuepoint-track - 5 1-byte EBML IDs, 5 1-byte EBML sizes, 4
136  * 8-byte uint max */
137 #define MAX_CUETRACKPOS_SIZE 42
138 
139 /** per-cuepoint - 2 1-byte EBML IDs, 2 1-byte EBML sizes, 8-byte uint max */
140 #define MAX_CUEPOINT_SIZE(num_tracks) 12 + MAX_CUETRACKPOS_SIZE * num_tracks
141 
142 /** Seek preroll value for opus */
143 #define OPUS_SEEK_PREROLL 80000000
144 
145 static int ebml_id_size(unsigned int id)
146 {
147  return (av_log2(id + 1) - 1) / 7 + 1;
148 }
149 
150 static void put_ebml_id(AVIOContext *pb, unsigned int id)
151 {
152  int i = ebml_id_size(id);
153  while (i--)
154  avio_w8(pb, (uint8_t)(id >> (i * 8)));
155 }
156 
157 /**
158  * Write an EBML size meaning "unknown size".
159  *
160  * @param bytes The number of bytes the size should occupy (maximum: 8).
161  */
162 static void put_ebml_size_unknown(AVIOContext *pb, int bytes)
163 {
164  av_assert0(bytes <= 8);
165  avio_w8(pb, 0x1ff >> bytes);
166  ffio_fill(pb, 0xff, bytes - 1);
167 }
168 
169 /**
170  * Calculate how many bytes are needed to represent a given number in EBML.
171  */
172 static int ebml_num_size(uint64_t num)
173 {
174  int bytes = 1;
175  while ((num + 1) >> bytes * 7)
176  bytes++;
177  return bytes;
178 }
179 
180 /**
181  * Write a number in EBML variable length format.
182  *
183  * @param bytes The number of bytes that need to be used to write the number.
184  * If zero, any number of bytes can be used.
185  */
186 static void put_ebml_num(AVIOContext *pb, uint64_t num, int bytes)
187 {
188  int i, needed_bytes = ebml_num_size(num);
189 
190  // sizes larger than this are currently undefined in EBML
191  av_assert0(num < (1ULL << 56) - 1);
192 
193  if (bytes == 0)
194  // don't care how many bytes are used, so use the min
195  bytes = needed_bytes;
196  // the bytes needed to write the given size would exceed the bytes
197  // that we need to use, so write unknown size. This shouldn't happen.
198  av_assert0(bytes >= needed_bytes);
199 
200  num |= 1ULL << bytes * 7;
201  for (i = bytes - 1; i >= 0; i--)
202  avio_w8(pb, (uint8_t)(num >> i * 8));
203 }
204 
205 static void put_ebml_uint(AVIOContext *pb, unsigned int elementid, uint64_t val)
206 {
207  int i, bytes = 1;
208  uint64_t tmp = val;
209  while (tmp >>= 8)
210  bytes++;
211 
212  put_ebml_id(pb, elementid);
213  put_ebml_num(pb, bytes, 0);
214  for (i = bytes - 1; i >= 0; i--)
215  avio_w8(pb, (uint8_t)(val >> i * 8));
216 }
217 
218 static void put_ebml_sint(AVIOContext *pb, unsigned int elementid, int64_t val)
219 {
220  int i, bytes = 1;
221  uint64_t tmp = 2*(val < 0 ? val^-1 : val);
222 
223  while (tmp>>=8) bytes++;
224 
225  put_ebml_id(pb, elementid);
226  put_ebml_num(pb, bytes, 0);
227  for (i = bytes - 1; i >= 0; i--)
228  avio_w8(pb, (uint8_t)(val >> i * 8));
229 }
230 
231 static void put_ebml_float(AVIOContext *pb, unsigned int elementid, double val)
232 {
233  put_ebml_id(pb, elementid);
234  put_ebml_num(pb, 8, 0);
235  avio_wb64(pb, av_double2int(val));
236 }
237 
238 static void put_ebml_binary(AVIOContext *pb, unsigned int elementid,
239  const void *buf, int size)
240 {
241  put_ebml_id(pb, elementid);
242  put_ebml_num(pb, size, 0);
243  avio_write(pb, buf, size);
244 }
245 
246 static void put_ebml_string(AVIOContext *pb, unsigned int elementid,
247  const char *str)
248 {
249  put_ebml_binary(pb, elementid, str, strlen(str));
250 }
251 
252 /**
253  * Write a void element of a given size. Useful for reserving space in
254  * the file to be written to later.
255  *
256  * @param size The number of bytes to reserve, which must be at least 2.
257  */
258 static void put_ebml_void(AVIOContext *pb, uint64_t size)
259 {
260  int64_t currentpos = avio_tell(pb);
261 
262  av_assert0(size >= 2);
263 
265  // we need to subtract the length needed to store the size from the
266  // size we need to reserve so 2 cases, we use 8 bytes to store the
267  // size if possible, 1 byte otherwise
268  if (size < 10)
269  put_ebml_num(pb, size - 1, 0);
270  else
271  put_ebml_num(pb, size - 9, 8);
272  ffio_fill(pb, 0, currentpos + size - avio_tell(pb));
273 }
274 
275 static ebml_master start_ebml_master(AVIOContext *pb, unsigned int elementid,
276  uint64_t expectedsize)
277 {
278  int bytes = expectedsize ? ebml_num_size(expectedsize) : 8;
279  put_ebml_id(pb, elementid);
280  put_ebml_size_unknown(pb, bytes);
281  return (ebml_master) {avio_tell(pb), bytes };
282 }
283 
285 {
286  int64_t pos = avio_tell(pb);
287 
288  if (avio_seek(pb, master.pos - master.sizebytes, SEEK_SET) < 0)
289  return;
290  put_ebml_num(pb, pos - master.pos, master.sizebytes);
291  avio_seek(pb, pos, SEEK_SET);
292 }
293 
294 static void put_xiph_size(AVIOContext *pb, int size)
295 {
296  ffio_fill(pb, 255, size / 255);
297  avio_w8(pb, size % 255);
298 }
299 
300 /**
301  * Initialize a mkv_seekhead element to be ready to index level 1 Matroska
302  * elements. If a maximum number of elements is specified, enough space
303  * will be reserved at the current file location to write a seek head of
304  * that size.
305  *
306  * @param segment_offset The absolute offset to the position in the file
307  * where the segment begins.
308  * @param numelements The maximum number of elements that will be indexed
309  * by this seek head, 0 if unlimited.
310  */
311 static mkv_seekhead *mkv_start_seekhead(AVIOContext *pb, int64_t segment_offset,
312  int numelements)
313 {
314  mkv_seekhead *new_seekhead = av_mallocz(sizeof(mkv_seekhead));
315  if (!new_seekhead)
316  return NULL;
317 
318  new_seekhead->segment_offset = segment_offset;
319 
320  if (numelements > 0) {
321  new_seekhead->filepos = avio_tell(pb);
322  // 21 bytes max for a seek entry, 10 bytes max for the SeekHead ID
323  // and size, and 3 bytes to guarantee that an EBML void element
324  // will fit afterwards
325  new_seekhead->reserved_size = numelements * MAX_SEEKENTRY_SIZE + 13;
326  new_seekhead->max_entries = numelements;
327  put_ebml_void(pb, new_seekhead->reserved_size);
328  }
329  return new_seekhead;
330 }
331 
332 static int mkv_add_seekhead_entry(mkv_seekhead *seekhead, unsigned int elementid, uint64_t filepos)
333 {
334  mkv_seekhead_entry *entries = seekhead->entries;
335 
336  // don't store more elements than we reserved space for
337  if (seekhead->max_entries > 0 && seekhead->max_entries <= seekhead->num_entries)
338  return -1;
339 
340  entries = av_realloc_array(entries, seekhead->num_entries + 1, sizeof(mkv_seekhead_entry));
341  if (!entries)
342  return AVERROR(ENOMEM);
343  seekhead->entries = entries;
344 
345  seekhead->entries[seekhead->num_entries].elementid = elementid;
346  seekhead->entries[seekhead->num_entries++].segmentpos = filepos - seekhead->segment_offset;
347 
348  return 0;
349 }
350 
351 /**
352  * Write the seek head to the file and free it. If a maximum number of
353  * elements was specified to mkv_start_seekhead(), the seek head will
354  * be written at the location reserved for it. Otherwise, it is written
355  * at the current location in the file.
356  *
357  * @return The file offset where the seekhead was written,
358  * -1 if an error occurred.
359  */
360 static int64_t mkv_write_seekhead(AVIOContext *pb, mkv_seekhead *seekhead)
361 {
362  ebml_master metaseek, seekentry;
363  int64_t currentpos;
364  int i;
365 
366  currentpos = avio_tell(pb);
367 
368  if (seekhead->reserved_size > 0) {
369  if (avio_seek(pb, seekhead->filepos, SEEK_SET) < 0) {
370  currentpos = -1;
371  goto fail;
372  }
373  }
374 
375  metaseek = start_ebml_master(pb, MATROSKA_ID_SEEKHEAD, seekhead->reserved_size);
376  for (i = 0; i < seekhead->num_entries; i++) {
377  mkv_seekhead_entry *entry = &seekhead->entries[i];
378 
380 
382  put_ebml_num(pb, ebml_id_size(entry->elementid), 0);
383  put_ebml_id(pb, entry->elementid);
384 
386  end_ebml_master(pb, seekentry);
387  }
388  end_ebml_master(pb, metaseek);
389 
390  if (seekhead->reserved_size > 0) {
391  uint64_t remaining = seekhead->filepos + seekhead->reserved_size - avio_tell(pb);
392  put_ebml_void(pb, remaining);
393  avio_seek(pb, currentpos, SEEK_SET);
394 
395  currentpos = seekhead->filepos;
396  }
397 fail:
398  av_freep(&seekhead->entries);
399  av_free(seekhead);
400 
401  return currentpos;
402 }
403 
404 static mkv_cues *mkv_start_cues(int64_t segment_offset)
405 {
406  mkv_cues *cues = av_mallocz(sizeof(mkv_cues));
407  if (!cues)
408  return NULL;
409 
410  cues->segment_offset = segment_offset;
411  return cues;
412 }
413 
414 static int mkv_add_cuepoint(mkv_cues *cues, int stream, int tracknum, int64_t ts,
415  int64_t cluster_pos, int64_t relative_pos, int64_t duration)
416 {
417  mkv_cuepoint *entries = cues->entries;
418 
419  if (ts < 0)
420  return 0;
421 
422  entries = av_realloc_array(entries, cues->num_entries + 1, sizeof(mkv_cuepoint));
423  if (!entries)
424  return AVERROR(ENOMEM);
425  cues->entries = entries;
426 
427  cues->entries[cues->num_entries].pts = ts;
428  cues->entries[cues->num_entries].stream_idx = stream;
429  cues->entries[cues->num_entries].tracknum = tracknum;
430  cues->entries[cues->num_entries].cluster_pos = cluster_pos - cues->segment_offset;
431  cues->entries[cues->num_entries].relative_pos = relative_pos;
432  cues->entries[cues->num_entries++].duration = duration;
433 
434  return 0;
435 }
436 
437 static int64_t mkv_write_cues(AVFormatContext *s, mkv_cues *cues, mkv_track *tracks, int num_tracks)
438 {
439  AVIOContext *pb = s->pb;
440  ebml_master cues_element;
441  int64_t currentpos;
442  int i, j;
443 
444  currentpos = avio_tell(pb);
445  cues_element = start_ebml_master(pb, MATROSKA_ID_CUES, 0);
446 
447  for (i = 0; i < cues->num_entries; i++) {
448  ebml_master cuepoint, track_positions;
449  mkv_cuepoint *entry = &cues->entries[i];
450  uint64_t pts = entry->pts;
451  int ctp_nb = 0;
452 
453  // Calculate the number of entries, so we know the element size
454  for (j = 0; j < num_tracks; j++)
455  tracks[j].has_cue = 0;
456  for (j = 0; j < cues->num_entries - i && entry[j].pts == pts; j++) {
457  int tracknum = entry[j].stream_idx;
458  av_assert0(tracknum>=0 && tracknum<num_tracks);
459  if (tracks[tracknum].has_cue && s->streams[tracknum]->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
460  continue;
461  tracks[tracknum].has_cue = 1;
462  ctp_nb ++;
463  }
464 
467 
468  // put all the entries from different tracks that have the exact same
469  // timestamp into the same CuePoint
470  for (j = 0; j < num_tracks; j++)
471  tracks[j].has_cue = 0;
472  for (j = 0; j < cues->num_entries - i && entry[j].pts == pts; j++) {
473  int tracknum = entry[j].stream_idx;
474  av_assert0(tracknum>=0 && tracknum<num_tracks);
475  if (tracks[tracknum].has_cue && s->streams[tracknum]->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
476  continue;
477  tracks[tracknum].has_cue = 1;
479  put_ebml_uint(pb, MATROSKA_ID_CUETRACK , entry[j].tracknum );
480  put_ebml_uint(pb, MATROSKA_ID_CUECLUSTERPOSITION , entry[j].cluster_pos);
481  put_ebml_uint(pb, MATROSKA_ID_CUERELATIVEPOSITION, entry[j].relative_pos);
482  if (entry[j].duration != -1)
484  end_ebml_master(pb, track_positions);
485  }
486  i += j - 1;
487  end_ebml_master(pb, cuepoint);
488  }
489  end_ebml_master(pb, cues_element);
490 
491  return currentpos;
492 }
493 
495 {
496  const uint8_t *header_start[3];
497  int header_len[3];
498  int first_header_size;
499  int j;
500 
501  if (codec->codec_id == AV_CODEC_ID_VORBIS)
502  first_header_size = 30;
503  else
504  first_header_size = 42;
505 
507  first_header_size, header_start, header_len) < 0) {
508  av_log(s, AV_LOG_ERROR, "Extradata corrupt.\n");
509  return -1;
510  }
511 
512  avio_w8(pb, 2); // number packets - 1
513  for (j = 0; j < 2; j++) {
514  put_xiph_size(pb, header_len[j]);
515  }
516  for (j = 0; j < 3; j++)
517  avio_write(pb, header_start[j], header_len[j]);
518 
519  return 0;
520 }
521 
523 {
524  if (codec->extradata && codec->extradata_size == 2)
525  avio_write(pb, codec->extradata, 2);
526  else
527  avio_wl16(pb, 0x403); // fallback to the version mentioned in matroska specs
528  return 0;
529 }
530 
532  AVIOContext *pb, AVCodecContext *codec)
533 {
534  int write_comment = (codec->channel_layout &&
535  !(codec->channel_layout & ~0x3ffffULL) &&
537  int ret = ff_flac_write_header(pb, codec->extradata, codec->extradata_size,
538  !write_comment);
539 
540  if (ret < 0)
541  return ret;
542 
543  if (write_comment) {
544  const char *vendor = (s->flags & AVFMT_FLAG_BITEXACT) ?
545  "Lavf" : LIBAVFORMAT_IDENT;
546  AVDictionary *dict = NULL;
547  uint8_t buf[32], *data, *p;
548  int64_t len;
549 
550  snprintf(buf, sizeof(buf), "0x%"PRIx64, codec->channel_layout);
551  av_dict_set(&dict, "WAVEFORMATEXTENSIBLE_CHANNEL_MASK", buf, 0);
552 
553  len = ff_vorbiscomment_length(dict, vendor);
554  if (len >= ((1<<24) - 4))
555  return AVERROR(EINVAL);
556 
557  data = av_malloc(len + 4);
558  if (!data) {
559  av_dict_free(&dict);
560  return AVERROR(ENOMEM);
561  }
562 
563  data[0] = 0x84;
564  AV_WB24(data + 1, len);
565 
566  p = data + 4;
567  ff_vorbiscomment_write(&p, &dict, vendor);
568 
569  avio_write(pb, data, len + 4);
570 
571  av_freep(&data);
572  av_dict_free(&dict);
573  }
574 
575  return 0;
576 }
577 
579  int *sample_rate, int *output_sample_rate)
580 {
581  MPEG4AudioConfig mp4ac;
582 
583  if (avpriv_mpeg4audio_get_config(&mp4ac, codec->extradata,
584  codec->extradata_size * 8, 1) < 0) {
585  av_log(s, AV_LOG_ERROR,
586  "Error parsing AAC extradata, unable to determine samplerate.\n");
587  return AVERROR(EINVAL);
588  }
589 
590  *sample_rate = mp4ac.sample_rate;
591  *output_sample_rate = mp4ac.ext_sample_rate;
592  return 0;
593 }
594 
596  AVCodecContext *codec,
597  AVIOContext *dyn_cp)
598 {
599  switch (codec->codec_id) {
600  case AV_CODEC_ID_VORBIS:
601  case AV_CODEC_ID_THEORA:
602  return put_xiph_codecpriv(s, dyn_cp, codec);
603  case AV_CODEC_ID_FLAC:
604  return put_flac_codecpriv(s, dyn_cp, codec);
605  case AV_CODEC_ID_WAVPACK:
606  return put_wv_codecpriv(dyn_cp, codec);
607  case AV_CODEC_ID_H264:
608  return ff_isom_write_avcc(dyn_cp, codec->extradata,
609  codec->extradata_size);
610  case AV_CODEC_ID_HEVC:
611  return ff_isom_write_hvcc(dyn_cp, codec->extradata,
612  codec->extradata_size, 0);
613  case AV_CODEC_ID_ALAC:
614  if (codec->extradata_size < 36) {
615  av_log(s, AV_LOG_ERROR,
616  "Invalid extradata found, ALAC expects a 36-byte "
617  "QuickTime atom.");
618  return AVERROR_INVALIDDATA;
619  } else
620  avio_write(dyn_cp, codec->extradata + 12,
621  codec->extradata_size - 12);
622  break;
623  default:
624  if (codec->codec_id == AV_CODEC_ID_PRORES &&
626  avio_wl32(dyn_cp, codec->codec_tag);
627  } else if (codec->extradata_size && codec->codec_id != AV_CODEC_ID_TTA)
628  avio_write(dyn_cp, codec->extradata, codec->extradata_size);
629  }
630 
631  return 0;
632 }
633 
635  AVCodecContext *codec, int native_id,
636  int qt_id)
637 {
638  AVIOContext *dyn_cp;
639  uint8_t *codecpriv;
640  int ret, codecpriv_size;
641 
642  ret = avio_open_dyn_buf(&dyn_cp);
643  if (ret < 0)
644  return ret;
645 
646  if (native_id) {
647  ret = mkv_write_native_codecprivate(s, codec, dyn_cp);
648  } else if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
649  if (qt_id) {
650  if (!codec->codec_tag)
652  codec->codec_id);
653  if (codec->extradata_size) {
656  ) {
657  int i;
658  avio_wb32(dyn_cp, 0x5a + codec->extradata_size);
659  avio_wl32(dyn_cp, codec->codec_tag);
660  for(i = 0; i < 0x5a - 8; i++)
661  avio_w8(dyn_cp, 0);
662  }
663  avio_write(dyn_cp, codec->extradata, codec->extradata_size);
664  }
665  } else {
667  av_log(s, AV_LOG_WARNING, "codec %s is not supported by this format\n",
668  avcodec_get_name(codec->codec_id));
669 
670  if (!codec->codec_tag)
672  codec->codec_id);
673  if (!codec->codec_tag && codec->codec_id != AV_CODEC_ID_RAWVIDEO) {
674  av_log(s, AV_LOG_ERROR, "No bmp codec tag found for codec %s\n",
675  avcodec_get_name(codec->codec_id));
676  ret = AVERROR(EINVAL);
677  }
678 
679  ff_put_bmp_header(dyn_cp, codec, ff_codec_bmp_tags, 0, 0);
680  }
681  } else if (codec->codec_type == AVMEDIA_TYPE_AUDIO) {
682  unsigned int tag;
684  if (!tag) {
685  av_log(s, AV_LOG_ERROR, "No wav codec tag found for codec %s\n",
686  avcodec_get_name(codec->codec_id));
687  ret = AVERROR(EINVAL);
688  }
689  if (!codec->codec_tag)
690  codec->codec_tag = tag;
691 
693  }
694 
695  codecpriv_size = avio_close_dyn_buf(dyn_cp, &codecpriv);
696  if (codecpriv_size)
698  codecpriv_size);
699  av_free(codecpriv);
700  return ret;
701 }
702 
703 
705  AVStream *st, int mode, int *h_width, int *h_height)
706 {
707  int i;
708  int ret = 0;
711 
712  *h_width = 1;
713  *h_height = 1;
714  // convert metadata into proper side data and add it to the stream
715  if ((tag = av_dict_get(st->metadata, "stereo_mode", NULL, 0)) ||
716  (tag = av_dict_get( s->metadata, "stereo_mode", NULL, 0))) {
717  int stereo_mode = atoi(tag->value);
718 
719  for (i=0; i<MATROSKA_VIDEO_STEREOMODE_TYPE_NB; i++)
720  if (!strcmp(tag->value, ff_matroska_video_stereo_mode[i])){
721  stereo_mode = i;
722  break;
723  }
724 
725  if (stereo_mode < MATROSKA_VIDEO_STEREOMODE_TYPE_NB &&
726  stereo_mode != 10 && stereo_mode != 12) {
727  int ret = ff_mkv_stereo3d_conv(st, stereo_mode);
728  if (ret < 0)
729  return ret;
730  }
731  }
732 
733  // iterate to find the stereo3d side data
734  for (i = 0; i < st->nb_side_data; i++) {
735  AVPacketSideData sd = st->side_data[i];
736  if (sd.type == AV_PKT_DATA_STEREO3D) {
737  AVStereo3D *stereo = (AVStereo3D *)sd.data;
738 
739  switch (stereo->type) {
740  case AV_STEREO3D_2D:
742  break;
744  format = (stereo->flags & AV_STEREO3D_FLAG_INVERT)
747  *h_width = 2;
748  break;
751  if (stereo->flags & AV_STEREO3D_FLAG_INVERT)
752  format--;
753  *h_height = 2;
754  break;
757  if (stereo->flags & AV_STEREO3D_FLAG_INVERT)
758  format--;
759  break;
760  case AV_STEREO3D_LINES:
762  if (stereo->flags & AV_STEREO3D_FLAG_INVERT)
763  format--;
764  *h_height = 2;
765  break;
766  case AV_STEREO3D_COLUMNS:
768  if (stereo->flags & AV_STEREO3D_FLAG_INVERT)
769  format--;
770  *h_width = 2;
771  break;
774  if (stereo->flags & AV_STEREO3D_FLAG_INVERT)
775  format++;
776  break;
777  }
778  break;
779  }
780  }
781 
782  if (format == MATROSKA_VIDEO_STEREOMODE_TYPE_NB)
783  return ret;
784 
785  // if webm, do not write unsupported modes
786  if ((mode == MODE_WEBM &&
789  || format >= MATROSKA_VIDEO_STEREOMODE_TYPE_NB) {
790  av_log(s, AV_LOG_ERROR,
791  "The specified stereo mode is not valid.\n");
793  return AVERROR(EINVAL);
794  }
795 
796  // write StereoMode if format is valid
798 
799  return ret;
800 }
801 
803  int i, AVIOContext *pb, int default_stream_exists)
804 {
805  AVStream *st = s->streams[i];
806  AVCodecContext *codec = st->codec;
807  ebml_master subinfo, track;
808  int native_id = 0;
809  int qt_id = 0;
810  int bit_depth = av_get_bits_per_sample(codec->codec_id);
811  int sample_rate = codec->sample_rate;
812  int output_sample_rate = 0;
813  int display_width_div = 1;
814  int display_height_div = 1;
815  int j, ret;
817 
818  // ms precision is the de-facto standard timescale for mkv files
819  avpriv_set_pts_info(st, 64, 1, 1000);
820 
821  if (codec->codec_type == AVMEDIA_TYPE_ATTACHMENT) {
822  mkv->have_attachments = 1;
823  return 0;
824  }
825 
826  if (!bit_depth && codec->codec_id != AV_CODEC_ID_ADPCM_G726)
827  bit_depth = av_get_bytes_per_sample(codec->sample_fmt) << 3;
828  if (!bit_depth)
829  bit_depth = codec->bits_per_coded_sample;
830 
831  if (codec->codec_id == AV_CODEC_ID_AAC) {
832  ret = get_aac_sample_rates(s, codec, &sample_rate, &output_sample_rate);
833  if (ret < 0)
834  return ret;
835  }
836 
839  mkv->is_dash ? mkv->dash_track_number : i + 1);
841  mkv->is_dash ? mkv->dash_track_number : i + 1);
842  put_ebml_uint (pb, MATROSKA_ID_TRACKFLAGLACING , 0); // no lacing (yet)
843 
844  if ((tag = av_dict_get(st->metadata, "title", NULL, 0)))
846  tag = av_dict_get(st->metadata, "language", NULL, 0);
847  if (mkv->mode != MODE_WEBM || codec->codec_id != AV_CODEC_ID_WEBVTT) {
848  put_ebml_string(pb, MATROSKA_ID_TRACKLANGUAGE, tag && tag->value ? tag->value:"und");
849  } else if (tag && tag->value) {
851  }
852 
853  // The default value for TRACKFLAGDEFAULT is 1, so add element
854  // if we need to clear it.
855  if (default_stream_exists && !(st->disposition & AV_DISPOSITION_DEFAULT))
857 
860 
861  if (mkv->mode == MODE_WEBM && codec->codec_id == AV_CODEC_ID_WEBVTT) {
862  const char *codec_id;
864  codec_id = "D_WEBVTT/CAPTIONS";
865  native_id = MATROSKA_TRACK_TYPE_SUBTITLE;
866  } else if (st->disposition & AV_DISPOSITION_DESCRIPTIONS) {
867  codec_id = "D_WEBVTT/DESCRIPTIONS";
868  native_id = MATROSKA_TRACK_TYPE_METADATA;
869  } else if (st->disposition & AV_DISPOSITION_METADATA) {
870  codec_id = "D_WEBVTT/METADATA";
871  native_id = MATROSKA_TRACK_TYPE_METADATA;
872  } else {
873  codec_id = "D_WEBVTT/SUBTITLES";
874  native_id = MATROSKA_TRACK_TYPE_SUBTITLE;
875  }
876  put_ebml_string(pb, MATROSKA_ID_CODECID, codec_id);
877  } else {
878  // look for a codec ID string specific to mkv to use,
879  // if none are found, use AVI codes
880  for (j = 0; ff_mkv_codec_tags[j].id != AV_CODEC_ID_NONE; j++) {
881  if (ff_mkv_codec_tags[j].id == codec->codec_id) {
883  native_id = 1;
884  break;
885  }
886  }
887  if (codec->codec_id == AV_CODEC_ID_RAWVIDEO && !codec->codec_tag) {
888  if (mkv->allow_raw_vfw) {
889  native_id = 0;
890  } else {
891  av_log(s, AV_LOG_ERROR, "Raw RGB is not supported Natively in Matroska, you can use AVI or NUT or\n"
892  "If you would like to store it anyway using VFW mode, enable allow_raw_vfw (-allow_raw_vfw 1)\n");
893  return AVERROR(EINVAL);
894  }
895  }
896  }
897 
898  if (codec->codec_type == AVMEDIA_TYPE_AUDIO && codec->initial_padding && codec->codec_id == AV_CODEC_ID_OPUS) {
899 // mkv->tracks[i].ts_offset = av_rescale_q(codec->initial_padding,
900 // (AVRational){ 1, codec->sample_rate },
901 // st->time_base);
902 
905  (AVRational){ 1, codec->sample_rate },
906  (AVRational){ 1, 1000000000 }));
907  }
908  if (codec->codec_id == AV_CODEC_ID_OPUS) {
910  }
911 
912  if (mkv->mode == MODE_WEBM && !(codec->codec_id == AV_CODEC_ID_VP8 ||
913  codec->codec_id == AV_CODEC_ID_VP9 ||
914  codec->codec_id == AV_CODEC_ID_OPUS ||
915  codec->codec_id == AV_CODEC_ID_VORBIS ||
916  codec->codec_id == AV_CODEC_ID_WEBVTT)) {
917  av_log(s, AV_LOG_ERROR,
918  "Only VP8 or VP9 video and Vorbis or Opus audio and WebVTT subtitles are supported for WebM.\n");
919  return AVERROR(EINVAL);
920  }
921 
922  switch (codec->codec_type) {
923  case AVMEDIA_TYPE_VIDEO:
925 
926  if( st->avg_frame_rate.num > 0 && st->avg_frame_rate.den > 0
927  && 1.0/av_q2d(st->avg_frame_rate) > av_q2d(codec->time_base))
929  else
931 
932  if (!native_id &&
935  codec->codec_id == AV_CODEC_ID_SVQ1 ||
936  codec->codec_id == AV_CODEC_ID_SVQ3 ||
937  codec->codec_id == AV_CODEC_ID_CINEPAK))
938  qt_id = 1;
939 
940  if (qt_id)
941  put_ebml_string(pb, MATROSKA_ID_CODECID, "V_QUICKTIME");
942  else if (!native_id) {
943  // if there is no mkv-specific codec ID, use VFW mode
944  put_ebml_string(pb, MATROSKA_ID_CODECID, "V_MS/VFW/FOURCC");
945  mkv->tracks[i].write_dts = 1;
947  }
948 
949  subinfo = start_ebml_master(pb, MATROSKA_ID_TRACKVIDEO, 0);
950  // XXX: interlace flag?
953 
954  // check both side data and metadata for stereo information,
955  // write the result to the bitstream if any is found
956  ret = mkv_write_stereo_mode(s, pb, st, mkv->mode,
957  &display_width_div,
958  &display_height_div);
959  if (ret < 0)
960  return ret;
961 
962  if (((tag = av_dict_get(st->metadata, "alpha_mode", NULL, 0)) && atoi(tag->value)) ||
963  ((tag = av_dict_get( s->metadata, "alpha_mode", NULL, 0)) && atoi(tag->value)) ||
964  (codec->pix_fmt == AV_PIX_FMT_YUVA420P)) {
966  }
967 
968  // write DisplayWidth and DisplayHeight, they contain the size of
969  // a single source view and/or the display aspect ratio
970  if (st->sample_aspect_ratio.num) {
971  int64_t d_width = av_rescale(codec->width, st->sample_aspect_ratio.num, st->sample_aspect_ratio.den);
972  if (d_width > INT_MAX) {
973  av_log(s, AV_LOG_ERROR, "Overflow in display width\n");
974  return AVERROR(EINVAL);
975  }
976  put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYWIDTH , d_width / display_width_div);
977  put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYHEIGHT, codec->height / display_height_div);
978  } else if (display_width_div != 1 || display_height_div != 1) {
979  put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYWIDTH , codec->width / display_width_div);
980  put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYHEIGHT, codec->height / display_height_div);
981  }
982 
983  if (codec->codec_id == AV_CODEC_ID_RAWVIDEO) {
984  uint32_t color_space = av_le2ne32(codec->codec_tag);
985  put_ebml_binary(pb, MATROSKA_ID_VIDEOCOLORSPACE, &color_space, sizeof(color_space));
986  }
987 
988  end_ebml_master(pb, subinfo);
989  break;
990 
991  case AVMEDIA_TYPE_AUDIO:
993 
994  if (!native_id)
995  // no mkv-specific ID, use ACM mode
996  put_ebml_string(pb, MATROSKA_ID_CODECID, "A_MS/ACM");
997 
998  subinfo = start_ebml_master(pb, MATROSKA_ID_TRACKAUDIO, 0);
1000  put_ebml_float (pb, MATROSKA_ID_AUDIOSAMPLINGFREQ, sample_rate);
1001  if (output_sample_rate)
1002  put_ebml_float(pb, MATROSKA_ID_AUDIOOUTSAMPLINGFREQ, output_sample_rate);
1003  if (bit_depth)
1004  put_ebml_uint(pb, MATROSKA_ID_AUDIOBITDEPTH, bit_depth);
1005  end_ebml_master(pb, subinfo);
1006  break;
1007 
1008  case AVMEDIA_TYPE_SUBTITLE:
1009  if (!native_id) {
1010  av_log(s, AV_LOG_ERROR, "Subtitle codec %d is not supported.\n", codec->codec_id);
1011  return AVERROR(ENOSYS);
1012  }
1013 
1014  if (mkv->mode != MODE_WEBM || codec->codec_id != AV_CODEC_ID_WEBVTT)
1015  native_id = MATROSKA_TRACK_TYPE_SUBTITLE;
1016 
1017  put_ebml_uint(pb, MATROSKA_ID_TRACKTYPE, native_id);
1018  break;
1019  default:
1020  av_log(s, AV_LOG_ERROR, "Only audio, video, and subtitles are supported for Matroska.\n");
1021  return AVERROR(EINVAL);
1022  }
1023 
1024  if (mkv->mode != MODE_WEBM || codec->codec_id != AV_CODEC_ID_WEBVTT) {
1025  ret = mkv_write_codecprivate(s, pb, codec, native_id, qt_id);
1026  if (ret < 0)
1027  return ret;
1028  }
1029 
1030  end_ebml_master(pb, track);
1031 
1032  return 0;
1033 }
1034 
1036 {
1037  MatroskaMuxContext *mkv = s->priv_data;
1038  AVIOContext *pb = s->pb;
1039  ebml_master tracks;
1040  int i, ret, default_stream_exists = 0;
1041 
1043  if (ret < 0)
1044  return ret;
1045 
1046  tracks = start_ebml_master(pb, MATROSKA_ID_TRACKS, 0);
1047  for (i = 0; i < s->nb_streams; i++) {
1048  AVStream *st = s->streams[i];
1049  default_stream_exists |= st->disposition & AV_DISPOSITION_DEFAULT;
1050  }
1051  for (i = 0; i < s->nb_streams; i++) {
1052  ret = mkv_write_track(s, mkv, i, pb, default_stream_exists);
1053  if (ret < 0)
1054  return ret;
1055  }
1056  end_ebml_master(pb, tracks);
1057  return 0;
1058 }
1059 
1061 {
1062  MatroskaMuxContext *mkv = s->priv_data;
1063  AVIOContext *pb = s->pb;
1064  ebml_master chapters, editionentry;
1065  AVRational scale = {1, 1E9};
1066  int i, ret;
1067 
1068  if (!s->nb_chapters || mkv->wrote_chapters)
1069  return 0;
1070 
1072  if (ret < 0) return ret;
1073 
1074  chapters = start_ebml_master(pb, MATROSKA_ID_CHAPTERS , 0);
1075  editionentry = start_ebml_master(pb, MATROSKA_ID_EDITIONENTRY, 0);
1078  for (i = 0; i < s->nb_chapters; i++) {
1079  ebml_master chapteratom, chapterdisplay;
1080  AVChapter *c = s->chapters[i];
1081  int64_t chapterstart = av_rescale_q(c->start, c->time_base, scale);
1082  int64_t chapterend = av_rescale_q(c->end, c->time_base, scale);
1083  AVDictionaryEntry *t = NULL;
1084  if (chapterstart < 0 || chapterstart > chapterend)
1085  return AVERROR_INVALIDDATA;
1086 
1087  chapteratom = start_ebml_master(pb, MATROSKA_ID_CHAPTERATOM, 0);
1089  put_ebml_uint(pb, MATROSKA_ID_CHAPTERTIMESTART, chapterstart);
1090  put_ebml_uint(pb, MATROSKA_ID_CHAPTERTIMEEND, chapterend);
1093  if ((t = av_dict_get(c->metadata, "title", NULL, 0))) {
1094  chapterdisplay = start_ebml_master(pb, MATROSKA_ID_CHAPTERDISPLAY, 0);
1097  end_ebml_master(pb, chapterdisplay);
1098  }
1099  end_ebml_master(pb, chapteratom);
1100  }
1101  end_ebml_master(pb, editionentry);
1102  end_ebml_master(pb, chapters);
1103 
1104  mkv->wrote_chapters = 1;
1105  return 0;
1106 }
1107 
1109 {
1110  uint8_t *key = av_strdup(t->key);
1111  uint8_t *p = key;
1112  const uint8_t *lang = NULL;
1113  ebml_master tag;
1114 
1115  if (!key)
1116  return AVERROR(ENOMEM);
1117 
1118  if ((p = strrchr(p, '-')) &&
1119  (lang = av_convert_lang_to(p + 1, AV_LANG_ISO639_2_BIBL)))
1120  *p = 0;
1121 
1122  p = key;
1123  while (*p) {
1124  if (*p == ' ')
1125  *p = '_';
1126  else if (*p >= 'a' && *p <= 'z')
1127  *p -= 'a' - 'A';
1128  p++;
1129  }
1130 
1133  if (lang)
1136  end_ebml_master(pb, tag);
1137 
1138  av_freep(&key);
1139  return 0;
1140 }
1141 
1142 static int mkv_write_tag(AVFormatContext *s, AVDictionary *m, unsigned int elementid,
1143  unsigned int uid, ebml_master *tags)
1144 {
1145  MatroskaMuxContext *mkv = s->priv_data;
1146  ebml_master tag, targets;
1147  AVDictionaryEntry *t = NULL;
1148  int ret;
1149 
1150  if (!tags->pos) {
1152  if (ret < 0) return ret;
1153 
1154  *tags = start_ebml_master(s->pb, MATROSKA_ID_TAGS, 0);
1155  }
1156 
1157  tag = start_ebml_master(s->pb, MATROSKA_ID_TAG, 0);
1158  targets = start_ebml_master(s->pb, MATROSKA_ID_TAGTARGETS, 0);
1159  if (elementid)
1160  put_ebml_uint(s->pb, elementid, uid);
1161  end_ebml_master(s->pb, targets);
1162 
1163  while ((t = av_dict_get(m, "", t, AV_DICT_IGNORE_SUFFIX))) {
1164  if (av_strcasecmp(t->key, "title") &&
1165  av_strcasecmp(t->key, "stereo_mode") &&
1166  av_strcasecmp(t->key, "encoding_tool")) {
1167  ret = mkv_write_simpletag(s->pb, t);
1168  if (ret < 0)
1169  return ret;
1170  }
1171  }
1172 
1173  end_ebml_master(s->pb, tag);
1174  return 0;
1175 }
1176 
1178 {
1179  AVDictionaryEntry *t = NULL;
1180 
1181  while ((t = av_dict_get(m, "", t, AV_DICT_IGNORE_SUFFIX)))
1182  if (av_strcasecmp(t->key, "title") && av_strcasecmp(t->key, "stereo_mode"))
1183  return 1;
1184 
1185  return 0;
1186 }
1187 
1189 {
1190  MatroskaMuxContext *mkv = s->priv_data;
1191  ebml_master tags = {0};
1192  int i, ret;
1193 
1195 
1196  if (mkv_check_tag(s->metadata)) {
1197  ret = mkv_write_tag(s, s->metadata, 0, 0, &tags);
1198  if (ret < 0) return ret;
1199  }
1200 
1201  for (i = 0; i < s->nb_streams; i++) {
1202  AVStream *st = s->streams[i];
1203 
1204  if (!mkv_check_tag(st->metadata))
1205  continue;
1206 
1207  ret = mkv_write_tag(s, st->metadata, MATROSKA_ID_TAGTARGETS_TRACKUID, i + 1, &tags);
1208  if (ret < 0) return ret;
1209  }
1210 
1211  for (i = 0; i < s->nb_chapters; i++) {
1212  AVChapter *ch = s->chapters[i];
1213 
1214  if (!mkv_check_tag(ch->metadata))
1215  continue;
1216 
1218  if (ret < 0) return ret;
1219  }
1220 
1221  if (tags.pos)
1222  end_ebml_master(s->pb, tags);
1223  return 0;
1224 }
1225 
1227 {
1228  MatroskaMuxContext *mkv = s->priv_data;
1229  AVIOContext *pb = s->pb;
1230  ebml_master attachments;
1231  AVLFG c;
1232  int i, ret;
1233 
1234  if (!mkv->have_attachments)
1235  return 0;
1236 
1238 
1240  if (ret < 0) return ret;
1241 
1242  attachments = start_ebml_master(pb, MATROSKA_ID_ATTACHMENTS, 0);
1243 
1244  for (i = 0; i < s->nb_streams; i++) {
1245  AVStream *st = s->streams[i];
1246  ebml_master attached_file;
1247  AVDictionaryEntry *t;
1248  const char *mimetype = NULL;
1249  uint64_t fileuid;
1250 
1252  continue;
1253 
1254  attached_file = start_ebml_master(pb, MATROSKA_ID_ATTACHEDFILE, 0);
1255 
1256  if (t = av_dict_get(st->metadata, "title", NULL, 0))
1258  if (!(t = av_dict_get(st->metadata, "filename", NULL, 0))) {
1259  av_log(s, AV_LOG_ERROR, "Attachment stream %d has no filename tag.\n", i);
1260  return AVERROR(EINVAL);
1261  }
1263  if (t = av_dict_get(st->metadata, "mimetype", NULL, 0))
1264  mimetype = t->value;
1265  else if (st->codec->codec_id != AV_CODEC_ID_NONE ) {
1266  int i;
1267  for (i = 0; ff_mkv_mime_tags[i].id != AV_CODEC_ID_NONE; i++)
1268  if (ff_mkv_mime_tags[i].id == st->codec->codec_id) {
1269  mimetype = ff_mkv_mime_tags[i].str;
1270  break;
1271  }
1272  for (i = 0; ff_mkv_image_mime_tags[i].id != AV_CODEC_ID_NONE; i++)
1273  if (ff_mkv_image_mime_tags[i].id == st->codec->codec_id) {
1274  mimetype = ff_mkv_image_mime_tags[i].str;
1275  break;
1276  }
1277  }
1278  if (!mimetype) {
1279  av_log(s, AV_LOG_ERROR, "Attachment stream %d has no mimetype tag and "
1280  "it cannot be deduced from the codec id.\n", i);
1281  return AVERROR(EINVAL);
1282  }
1283 
1284  if (s->flags & AVFMT_FLAG_BITEXACT) {
1285  struct AVSHA *sha = av_sha_alloc();
1286  uint8_t digest[20];
1287  if (!sha)
1288  return AVERROR(ENOMEM);
1289  av_sha_init(sha, 160);
1291  av_sha_final(sha, digest);
1292  av_free(sha);
1293  fileuid = AV_RL64(digest);
1294  } else {
1295  fileuid = av_lfg_get(&c);
1296  }
1297  av_log(s, AV_LOG_VERBOSE, "Using %.16"PRIx64" for attachment %d\n",
1298  fileuid, i);
1299 
1302  put_ebml_uint(pb, MATROSKA_ID_FILEUID, fileuid);
1303  end_ebml_master(pb, attached_file);
1304  }
1305  end_ebml_master(pb, attachments);
1306 
1307  return 0;
1308 }
1309 
1311 {
1312  MatroskaMuxContext *mkv = s->priv_data;
1313  AVIOContext *pb = s->pb;
1314  ebml_master ebml_header, segment_info;
1316  int ret, i, version = 2;
1317 
1318  if (!strcmp(s->oformat->name, "webm"))
1319  mkv->mode = MODE_WEBM;
1320  else
1321  mkv->mode = MODE_MATROSKAv2;
1322 
1323  if (s->avoid_negative_ts < 0) {
1324  s->avoid_negative_ts = 1;
1326  }
1327 
1328  if (mkv->mode != MODE_WEBM ||
1329  av_dict_get(s->metadata, "stereo_mode", NULL, 0) ||
1330  av_dict_get(s->metadata, "alpha_mode", NULL, 0))
1331  version = 4;
1332 
1333  for (i = 0; i < s->nb_streams; i++) {
1334  if (s->streams[i]->codec->codec_id == AV_CODEC_ID_ATRAC3 ||
1335  s->streams[i]->codec->codec_id == AV_CODEC_ID_COOK ||
1337  s->streams[i]->codec->codec_id == AV_CODEC_ID_SIPR ||
1338  s->streams[i]->codec->codec_id == AV_CODEC_ID_RV10 ||
1339  s->streams[i]->codec->codec_id == AV_CODEC_ID_RV20) {
1340  av_log(s, AV_LOG_ERROR,
1341  "The Matroska muxer does not yet support muxing %s\n",
1343  return AVERROR_PATCHWELCOME;
1344  }
1345  if (s->streams[i]->codec->codec_id == AV_CODEC_ID_OPUS ||
1346  av_dict_get(s->streams[i]->metadata, "stereo_mode", NULL, 0) ||
1347  av_dict_get(s->streams[i]->metadata, "alpha_mode", NULL, 0))
1348  version = 4;
1349  }
1350 
1351  mkv->tracks = av_mallocz_array(s->nb_streams, sizeof(*mkv->tracks));
1352  if (!mkv->tracks)
1353  return AVERROR(ENOMEM);
1354 
1355  ebml_header = start_ebml_master(pb, EBML_ID_HEADER, 0);
1361  put_ebml_uint (pb, EBML_ID_DOCTYPEVERSION , version);
1363  end_ebml_master(pb, ebml_header);
1364 
1366  mkv->segment_offset = avio_tell(pb);
1367 
1368  // we write 2 seek heads - one at the end of the file to point to each
1369  // cluster, and one at the beginning to point to all other level one
1370  // elements (including the seek head at the end of the file), which
1371  // isn't more than 10 elements if we only write one of each other
1372  // currently defined level 1 element
1373  mkv->main_seekhead = mkv_start_seekhead(pb, mkv->segment_offset, 10);
1374  if (!mkv->main_seekhead)
1375  return AVERROR(ENOMEM);
1376 
1378  if (ret < 0) return ret;
1379 
1380  segment_info = start_ebml_master(pb, MATROSKA_ID_INFO, 0);
1382  if ((tag = av_dict_get(s->metadata, "title", NULL, 0)))
1384  if (!(s->flags & AVFMT_FLAG_BITEXACT)) {
1385  uint32_t segment_uid[4];
1386  AVLFG lfg;
1387 
1389 
1390  for (i = 0; i < 4; i++)
1391  segment_uid[i] = av_lfg_get(&lfg);
1392 
1394  if ((tag = av_dict_get(s->metadata, "encoding_tool", NULL, 0)))
1396  else
1398  put_ebml_binary(pb, MATROSKA_ID_SEGMENTUID, segment_uid, 16);
1399  } else {
1400  const char *ident = "Lavf";
1403  }
1404 
1405  if (tag = av_dict_get(s->metadata, "creation_time", NULL, 0)) {
1406  // Adjust time so it's relative to 2001-01-01 and convert to nanoseconds.
1407  int64_t date_utc = (ff_iso8601_to_unix_time(tag->value) - 978307200) * 1000000000;
1408  uint8_t date_utc_buf[8];
1409  AV_WB64(date_utc_buf, date_utc);
1410  put_ebml_binary(pb, MATROSKA_ID_DATEUTC, date_utc_buf, 8);
1411  }
1412 
1413  // reserve space for the duration
1414  mkv->duration = 0;
1415  mkv->duration_offset = avio_tell(pb);
1416  put_ebml_void(pb, 11); // assumes double-precision float to be written
1417  end_ebml_master(pb, segment_info);
1418 
1419  ret = mkv_write_tracks(s);
1420  if (ret < 0)
1421  return ret;
1422 
1423  for (i = 0; i < s->nb_chapters; i++)
1424  mkv->chapter_id_offset = FFMAX(mkv->chapter_id_offset, 1LL - s->chapters[i]->id);
1425 
1426  if (mkv->mode != MODE_WEBM) {
1427  ret = mkv_write_chapters(s);
1428  if (ret < 0)
1429  return ret;
1430 
1431  ret = mkv_write_tags(s);
1432  if (ret < 0)
1433  return ret;
1434 
1435  ret = mkv_write_attachments(s);
1436  if (ret < 0)
1437  return ret;
1438  }
1439 
1440  if (!s->pb->seekable)
1442 
1443  mkv->cues = mkv_start_cues(mkv->segment_offset);
1444  if (!mkv->cues)
1445  return AVERROR(ENOMEM);
1446 
1447  if (pb->seekable && mkv->reserve_cues_space) {
1448  mkv->cues_pos = avio_tell(pb);
1450  }
1451 
1453  mkv->cur_audio_pkt.size = 0;
1454  mkv->cluster_pos = -1;
1455 
1456  avio_flush(pb);
1457 
1458  // start a new cluster every 5 MB or 5 sec, or 32k / 1 sec for streaming or
1459  // after 4k and on a keyframe
1460  if (pb->seekable) {
1461  if (mkv->cluster_time_limit < 0)
1462  mkv->cluster_time_limit = 5000;
1463  if (mkv->cluster_size_limit < 0)
1464  mkv->cluster_size_limit = 5 * 1024 * 1024;
1465  } else {
1466  if (mkv->cluster_time_limit < 0)
1467  mkv->cluster_time_limit = 1000;
1468  if (mkv->cluster_size_limit < 0)
1469  mkv->cluster_size_limit = 32 * 1024;
1470  }
1471 
1472  return 0;
1473 }
1474 
1475 static int mkv_blockgroup_size(int pkt_size)
1476 {
1477  int size = pkt_size + 4;
1478  size += ebml_num_size(size);
1479  size += 2; // EBML ID for block and block duration
1480  size += 8; // max size of block duration
1481  size += ebml_num_size(size);
1482  size += 1; // blockgroup EBML ID
1483  return size;
1484 }
1485 
1486 static int mkv_strip_wavpack(const uint8_t *src, uint8_t **pdst, int *size)
1487 {
1488  uint8_t *dst;
1489  int srclen = *size;
1490  int offset = 0;
1491  int ret;
1492 
1493  dst = av_malloc(srclen);
1494  if (!dst)
1495  return AVERROR(ENOMEM);
1496 
1497  while (srclen >= WV_HEADER_SIZE) {
1498  WvHeader header;
1499 
1500  ret = ff_wv_parse_header(&header, src);
1501  if (ret < 0)
1502  goto fail;
1503  src += WV_HEADER_SIZE;
1504  srclen -= WV_HEADER_SIZE;
1505 
1506  if (srclen < header.blocksize) {
1507  ret = AVERROR_INVALIDDATA;
1508  goto fail;
1509  }
1510 
1511  if (header.initial) {
1512  AV_WL32(dst + offset, header.samples);
1513  offset += 4;
1514  }
1515  AV_WL32(dst + offset, header.flags);
1516  AV_WL32(dst + offset + 4, header.crc);
1517  offset += 8;
1518 
1519  if (!(header.initial && header.final)) {
1520  AV_WL32(dst + offset, header.blocksize);
1521  offset += 4;
1522  }
1523 
1524  memcpy(dst + offset, src, header.blocksize);
1525  src += header.blocksize;
1526  srclen -= header.blocksize;
1527  offset += header.blocksize;
1528  }
1529 
1530  *pdst = dst;
1531  *size = offset;
1532 
1533  return 0;
1534 fail:
1535  av_freep(&dst);
1536  return ret;
1537 }
1538 
1540  unsigned int blockid, AVPacket *pkt, int flags)
1541 {
1542  MatroskaMuxContext *mkv = s->priv_data;
1543  AVCodecContext *codec = s->streams[pkt->stream_index]->codec;
1544  uint8_t *data = NULL, *side_data = NULL;
1545  int offset = 0, size = pkt->size, side_data_size = 0;
1546  int64_t ts = mkv->tracks[pkt->stream_index].write_dts ? pkt->dts : pkt->pts;
1547  uint64_t additional_id = 0;
1548  int64_t discard_padding = 0;
1549  ebml_master block_group, block_additions, block_more;
1550 
1551  av_log(s, AV_LOG_DEBUG, "Writing block at offset %" PRIu64 ", size %d, "
1552  "pts %" PRId64 ", dts %" PRId64 ", duration %d, flags %d\n",
1553  avio_tell(pb), pkt->size, pkt->pts, pkt->dts, pkt->duration, flags);
1554  if (codec->codec_id == AV_CODEC_ID_H264 && codec->extradata_size > 0 &&
1555  (AV_RB24(codec->extradata) == 1 || AV_RB32(codec->extradata) == 1))
1556  ff_avc_parse_nal_units_buf(pkt->data, &data, &size);
1557  else if (codec->codec_id == AV_CODEC_ID_HEVC && codec->extradata_size > 6 &&
1558  (AV_RB24(codec->extradata) == 1 || AV_RB32(codec->extradata) == 1))
1559  /* extradata is Annex B, assume the bitstream is too and convert it */
1560  ff_hevc_annexb2mp4_buf(pkt->data, &data, &size, 0, NULL);
1561  else if (codec->codec_id == AV_CODEC_ID_WAVPACK) {
1562  int ret = mkv_strip_wavpack(pkt->data, &data, &size);
1563  if (ret < 0) {
1564  av_log(s, AV_LOG_ERROR, "Error stripping a WavPack packet.\n");
1565  return;
1566  }
1567  } else
1568  data = pkt->data;
1569 
1570  if (codec->codec_id == AV_CODEC_ID_PRORES) {
1571  /* Matroska specification requires to remove the first QuickTime atom
1572  */
1573  size -= 8;
1574  offset = 8;
1575  }
1576 
1577  side_data = av_packet_get_side_data(pkt,
1579  &side_data_size);
1580 
1581  if (side_data && side_data_size >= 10) {
1582  discard_padding = av_rescale_q(AV_RL32(side_data + 4),
1583  (AVRational){1, codec->sample_rate},
1584  (AVRational){1, 1000000000});
1585  }
1586 
1587  side_data = av_packet_get_side_data(pkt,
1589  &side_data_size);
1590  if (side_data) {
1591  additional_id = AV_RB64(side_data);
1592  side_data += 8;
1593  side_data_size -= 8;
1594  }
1595 
1596  if ((side_data_size && additional_id == 1) || discard_padding) {
1597  block_group = start_ebml_master(pb, MATROSKA_ID_BLOCKGROUP, 0);
1598  blockid = MATROSKA_ID_BLOCK;
1599  }
1600 
1601  put_ebml_id(pb, blockid);
1602  put_ebml_num(pb, size + 4, 0);
1603  // this assumes stream_index is less than 126
1604  avio_w8(pb, 0x80 | (mkv->is_dash ? mkv->dash_track_number : (pkt->stream_index + 1)));
1605  avio_wb16(pb, ts - mkv->cluster_pts);
1606  avio_w8(pb, flags);
1607  avio_write(pb, data + offset, size);
1608  if (data != pkt->data)
1609  av_free(data);
1610 
1611  if (discard_padding) {
1612  put_ebml_sint(pb, MATROSKA_ID_DISCARDPADDING, discard_padding);
1613  }
1614 
1615  if (side_data_size && additional_id == 1) {
1616  block_additions = start_ebml_master(pb, MATROSKA_ID_BLOCKADDITIONS, 0);
1617  block_more = start_ebml_master(pb, MATROSKA_ID_BLOCKMORE, 0);
1620  put_ebml_num(pb, side_data_size, 0);
1621  avio_write(pb, side_data, side_data_size);
1622  end_ebml_master(pb, block_more);
1623  end_ebml_master(pb, block_additions);
1624  }
1625  if ((side_data_size && additional_id == 1) || discard_padding) {
1626  end_ebml_master(pb, block_group);
1627  }
1628 }
1629 
1631 {
1632  MatroskaMuxContext *mkv = s->priv_data;
1633  ebml_master blockgroup;
1634  int id_size, settings_size, size;
1635  uint8_t *id, *settings;
1636  int64_t ts = mkv->tracks[pkt->stream_index].write_dts ? pkt->dts : pkt->pts;
1637  const int flags = 0;
1638 
1639  id_size = 0;
1641  &id_size);
1642 
1643  settings_size = 0;
1645  &settings_size);
1646 
1647  size = id_size + 1 + settings_size + 1 + pkt->size;
1648 
1649  av_log(s, AV_LOG_DEBUG, "Writing block at offset %" PRIu64 ", size %d, "
1650  "pts %" PRId64 ", dts %" PRId64 ", duration %d, flags %d\n",
1651  avio_tell(pb), size, pkt->pts, pkt->dts, pkt->duration, flags);
1652 
1654 
1656  put_ebml_num(pb, size + 4, 0);
1657  avio_w8(pb, 0x80 | (pkt->stream_index + 1)); // this assumes stream_index is less than 126
1658  avio_wb16(pb, ts - mkv->cluster_pts);
1659  avio_w8(pb, flags);
1660  avio_printf(pb, "%.*s\n%.*s\n%.*s", id_size, id, settings_size, settings, pkt->size, pkt->data);
1661 
1663  end_ebml_master(pb, blockgroup);
1664 
1665  return pkt->duration;
1666 }
1667 
1669 {
1670  MatroskaMuxContext *mkv = s->priv_data;
1671  int bufsize;
1672  uint8_t *dyn_buf;
1673 
1674  if (!mkv->dyn_bc)
1675  return;
1676 
1677  bufsize = avio_close_dyn_buf(mkv->dyn_bc, &dyn_buf);
1678  avio_write(s->pb, dyn_buf, bufsize);
1679  av_free(dyn_buf);
1680  mkv->dyn_bc = NULL;
1681 }
1682 
1684 {
1685  MatroskaMuxContext *mkv = s->priv_data;
1686  AVIOContext *pb;
1687 
1688  if (s->pb->seekable) {
1689  pb = s->pb;
1690  } else {
1691  pb = mkv->dyn_bc;
1692  }
1693 
1694  av_log(s, AV_LOG_DEBUG,
1695  "Starting new cluster at offset %" PRIu64 " bytes, "
1696  "pts %" PRIu64 "dts %" PRIu64 "\n",
1697  avio_tell(pb), pkt->pts, pkt->dts);
1698  end_ebml_master(pb, mkv->cluster);
1699  mkv->cluster_pos = -1;
1700  if (mkv->dyn_bc)
1701  mkv_flush_dynbuf(s);
1702  avio_flush(s->pb);
1703 }
1704 
1706 {
1707  MatroskaMuxContext *mkv = s->priv_data;
1708  AVIOContext *pb = s->pb;
1709  AVCodecContext *codec = s->streams[pkt->stream_index]->codec;
1710  int keyframe = !!(pkt->flags & AV_PKT_FLAG_KEY);
1711  int duration = pkt->duration;
1712  int ret;
1713  int64_t ts = mkv->tracks[pkt->stream_index].write_dts ? pkt->dts : pkt->pts;
1714  int64_t relative_packet_pos;
1715  int dash_tracknum = mkv->is_dash ? mkv->dash_track_number : pkt->stream_index + 1;
1716 
1717  if (ts == AV_NOPTS_VALUE) {
1718  av_log(s, AV_LOG_ERROR, "Can't write packet with unknown timestamp\n");
1719  return AVERROR(EINVAL);
1720  }
1721  ts += mkv->tracks[pkt->stream_index].ts_offset;
1722 
1723  if (mkv->cluster_pos != -1) {
1724  int64_t cluster_time = ts - mkv->cluster_pts + mkv->tracks[pkt->stream_index].ts_offset;
1725  if ((int16_t)cluster_time != cluster_time) {
1726  av_log(s, AV_LOG_WARNING, "Starting new cluster due to timestamp\n");
1727  mkv_start_new_cluster(s, pkt);
1728  }
1729  }
1730 
1731  if (!s->pb->seekable) {
1732  if (!mkv->dyn_bc) {
1733  ret = avio_open_dyn_buf(&mkv->dyn_bc);
1734  if (ret < 0) {
1735  av_log(s, AV_LOG_ERROR, "Failed to open dynamic buffer\n");
1736  return ret;
1737  }
1738  }
1739  pb = mkv->dyn_bc;
1740  }
1741 
1742  if (mkv->cluster_pos == -1) {
1743  mkv->cluster_pos = avio_tell(s->pb);
1746  mkv->cluster_pts = FFMAX(0, ts);
1747  }
1748 
1749  relative_packet_pos = avio_tell(s->pb) - mkv->cluster.pos;
1750 
1751  if (codec->codec_type != AVMEDIA_TYPE_SUBTITLE) {
1752  mkv_write_block(s, pb, MATROSKA_ID_SIMPLEBLOCK, pkt, keyframe << 7);
1753  if (codec->codec_type == AVMEDIA_TYPE_VIDEO && keyframe || add_cue) {
1754  ret = mkv_add_cuepoint(mkv->cues, pkt->stream_index, dash_tracknum, ts, mkv->cluster_pos, relative_packet_pos, -1);
1755  if (ret < 0) return ret;
1756  }
1757  } else {
1758  if (codec->codec_id == AV_CODEC_ID_WEBVTT) {
1759  duration = mkv_write_vtt_blocks(s, pb, pkt);
1760  } else {
1762  mkv_blockgroup_size(pkt->size));
1763  /* For backward compatibility, prefer convergence_duration. */
1764  if (pkt->convergence_duration > 0) {
1765  duration = pkt->convergence_duration;
1766  }
1767  mkv_write_block(s, pb, MATROSKA_ID_BLOCK, pkt, 0);
1769  end_ebml_master(pb, blockgroup);
1770  }
1771 
1772  ret = mkv_add_cuepoint(mkv->cues, pkt->stream_index, dash_tracknum, ts,
1773  mkv->cluster_pos, relative_packet_pos, duration);
1774  if (ret < 0)
1775  return ret;
1776  }
1777 
1778  mkv->duration = FFMAX(mkv->duration, ts + duration);
1779  return 0;
1780 }
1781 
1783 {
1784  MatroskaMuxContext *mkv = s->priv_data;
1785  int codec_type = s->streams[pkt->stream_index]->codec->codec_type;
1786  int keyframe = !!(pkt->flags & AV_PKT_FLAG_KEY);
1787  int cluster_size;
1788  int64_t cluster_time;
1789  int ret;
1790  int start_new_cluster;
1791 
1792  if (mkv->tracks[pkt->stream_index].write_dts)
1793  cluster_time = pkt->dts - mkv->cluster_pts;
1794  else
1795  cluster_time = pkt->pts - mkv->cluster_pts;
1796  cluster_time += mkv->tracks[pkt->stream_index].ts_offset;
1797 
1798  // start a new cluster every 5 MB or 5 sec, or 32k / 1 sec for streaming or
1799  // after 4k and on a keyframe
1800  if (s->pb->seekable) {
1801  cluster_size = avio_tell(s->pb) - mkv->cluster_pos;
1802  } else {
1803  cluster_size = avio_tell(mkv->dyn_bc);
1804  }
1805 
1806  if (mkv->is_dash && codec_type == AVMEDIA_TYPE_VIDEO) {
1807  // WebM DASH specification states that the first block of every cluster
1808  // has to be a key frame. So for DASH video, we only create a cluster
1809  // on seeing key frames.
1810  start_new_cluster = keyframe;
1811  } else if (mkv->is_dash && codec_type == AVMEDIA_TYPE_AUDIO &&
1812  (mkv->cluster_pos == -1 ||
1813  cluster_time > mkv->cluster_time_limit)) {
1814  // For DASH audio, we create a Cluster based on cluster_time_limit
1815  start_new_cluster = 1;
1816  } else if (!mkv->is_dash &&
1817  (cluster_size > mkv->cluster_size_limit ||
1818  cluster_time > mkv->cluster_time_limit ||
1819  (codec_type == AVMEDIA_TYPE_VIDEO && keyframe &&
1820  cluster_size > 4 * 1024))) {
1821  start_new_cluster = 1;
1822  } else {
1823  start_new_cluster = 0;
1824  }
1825 
1826  if (mkv->cluster_pos != -1 && start_new_cluster) {
1827  mkv_start_new_cluster(s, pkt);
1828  }
1829 
1830  // check if we have an audio packet cached
1831  if (mkv->cur_audio_pkt.size > 0) {
1832  // for DASH audio, a CuePoint has to be added when there is a new cluster.
1834  mkv->is_dash ? start_new_cluster : 0);
1836  if (ret < 0) {
1837  av_log(s, AV_LOG_ERROR,
1838  "Could not write cached audio packet ret:%d\n", ret);
1839  return ret;
1840  }
1841  }
1842 
1843  // buffer an audio packet to ensure the packet containing the video
1844  // keyframe's timecode is contained in the same cluster for WebM
1845  if (codec_type == AVMEDIA_TYPE_AUDIO) {
1846  mkv->cur_audio_pkt = *pkt;
1847  if (pkt->buf) {
1848  mkv->cur_audio_pkt.buf = av_buffer_ref(pkt->buf);
1849  ret = mkv->cur_audio_pkt.buf ? 0 : AVERROR(ENOMEM);
1850  } else
1851  ret = av_dup_packet(&mkv->cur_audio_pkt);
1852  if (mkv->cur_audio_pkt.side_data_elems > 0) {
1854  }
1855  } else
1856  ret = mkv_write_packet_internal(s, pkt, 0);
1857  return ret;
1858 }
1859 
1861 {
1862  MatroskaMuxContext *mkv = s->priv_data;
1863  AVIOContext *pb;
1864  if (s->pb->seekable)
1865  pb = s->pb;
1866  else
1867  pb = mkv->dyn_bc;
1868  if (!pkt) {
1869  if (mkv->cluster_pos != -1) {
1870  av_log(s, AV_LOG_DEBUG,
1871  "Flushing cluster at offset %" PRIu64 " bytes\n",
1872  avio_tell(pb));
1873  end_ebml_master(pb, mkv->cluster);
1874  mkv->cluster_pos = -1;
1875  if (mkv->dyn_bc)
1876  mkv_flush_dynbuf(s);
1877  avio_flush(s->pb);
1878  }
1879  return 0;
1880  }
1881  return mkv_write_packet(s, pkt);
1882 }
1883 
1885 {
1886  MatroskaMuxContext *mkv = s->priv_data;
1887  AVIOContext *pb = s->pb;
1888  int64_t currentpos, cuespos;
1889  int ret;
1890 
1891  // check if we have an audio packet cached
1892  if (mkv->cur_audio_pkt.size > 0) {
1893  ret = mkv_write_packet_internal(s, &mkv->cur_audio_pkt, 0);
1895  if (ret < 0) {
1896  av_log(s, AV_LOG_ERROR,
1897  "Could not write cached audio packet ret:%d\n", ret);
1898  return ret;
1899  }
1900  }
1901 
1902  if (mkv->dyn_bc) {
1903  end_ebml_master(mkv->dyn_bc, mkv->cluster);
1904  mkv_flush_dynbuf(s);
1905  } else if (mkv->cluster_pos != -1) {
1906  end_ebml_master(pb, mkv->cluster);
1907  }
1908 
1909  if (mkv->mode != MODE_WEBM) {
1910  ret = mkv_write_chapters(s);
1911  if (ret < 0)
1912  return ret;
1913  }
1914 
1915  if (pb->seekable) {
1916  if (mkv->cues->num_entries) {
1917  if (mkv->reserve_cues_space) {
1918  int64_t cues_end;
1919 
1920  currentpos = avio_tell(pb);
1921  avio_seek(pb, mkv->cues_pos, SEEK_SET);
1922 
1923  cuespos = mkv_write_cues(s, mkv->cues, mkv->tracks, s->nb_streams);
1924  cues_end = avio_tell(pb);
1925  if (cues_end > cuespos + mkv->reserve_cues_space) {
1926  av_log(s, AV_LOG_ERROR,
1927  "Insufficient space reserved for cues: %d "
1928  "(needed: %" PRId64 ").\n",
1929  mkv->reserve_cues_space, cues_end - cuespos);
1930  return AVERROR(EINVAL);
1931  }
1932 
1933  if (cues_end < cuespos + mkv->reserve_cues_space)
1935  (cues_end - cuespos));
1936 
1937  avio_seek(pb, currentpos, SEEK_SET);
1938  } else {
1939  cuespos = mkv_write_cues(s, mkv->cues, mkv->tracks, s->nb_streams);
1940  }
1941 
1943  cuespos);
1944  if (ret < 0)
1945  return ret;
1946  }
1947 
1949 
1950  // update the duration
1951  av_log(s, AV_LOG_DEBUG, "end duration = %" PRIu64 "\n", mkv->duration);
1952  currentpos = avio_tell(pb);
1953  avio_seek(pb, mkv->duration_offset, SEEK_SET);
1955 
1956  avio_seek(pb, currentpos, SEEK_SET);
1957  }
1958 
1959  end_ebml_master(pb, mkv->segment);
1960  av_freep(&mkv->tracks);
1961  av_freep(&mkv->cues->entries);
1962  av_freep(&mkv->cues);
1963 
1964  return 0;
1965 }
1966 
1967 static int mkv_query_codec(enum AVCodecID codec_id, int std_compliance)
1968 {
1969  int i;
1970  for (i = 0; ff_mkv_codec_tags[i].id != AV_CODEC_ID_NONE; i++)
1971  if (ff_mkv_codec_tags[i].id == codec_id)
1972  return 1;
1973 
1974  if (std_compliance < FF_COMPLIANCE_NORMAL) {
1975  enum AVMediaType type = avcodec_get_type(codec_id);
1976  // mkv theoretically supports any video/audio through VFW/ACM
1977  if (type == AVMEDIA_TYPE_VIDEO || type == AVMEDIA_TYPE_AUDIO)
1978  return 1;
1979  }
1980 
1981  return 0;
1982 }
1983 
1985  { AV_CODEC_ID_ALAC, 0XFFFFFFFF },
1986  { AV_CODEC_ID_EAC3, 0XFFFFFFFF },
1987  { AV_CODEC_ID_MLP, 0xFFFFFFFF },
1988  { AV_CODEC_ID_OPUS, 0xFFFFFFFF },
1989  { AV_CODEC_ID_PCM_S16BE, 0xFFFFFFFF },
1990  { AV_CODEC_ID_PCM_S24BE, 0xFFFFFFFF },
1991  { AV_CODEC_ID_PCM_S32BE, 0xFFFFFFFF },
1992  { AV_CODEC_ID_QDM2, 0xFFFFFFFF },
1993  { AV_CODEC_ID_RA_144, 0xFFFFFFFF },
1994  { AV_CODEC_ID_RA_288, 0xFFFFFFFF },
1995  { AV_CODEC_ID_COOK, 0xFFFFFFFF },
1996  { AV_CODEC_ID_TRUEHD, 0xFFFFFFFF },
1997  { AV_CODEC_ID_NONE, 0xFFFFFFFF }
1998 };
1999 
2001  { AV_CODEC_ID_RV10, 0xFFFFFFFF },
2002  { AV_CODEC_ID_RV20, 0xFFFFFFFF },
2003  { AV_CODEC_ID_RV30, 0xFFFFFFFF },
2004  { AV_CODEC_ID_RV40, 0xFFFFFFFF },
2005  { AV_CODEC_ID_VP9, 0xFFFFFFFF },
2006  { AV_CODEC_ID_NONE, 0xFFFFFFFF }
2007 };
2008 
2010  { AV_CODEC_ID_DVB_SUBTITLE, 0xFFFFFFFF },
2011  { AV_CODEC_ID_HDMV_PGS_SUBTITLE, 0xFFFFFFFF },
2012  { AV_CODEC_ID_NONE, 0xFFFFFFFF }
2013 };
2014 
2015 #define OFFSET(x) offsetof(MatroskaMuxContext, x)
2016 #define FLAGS AV_OPT_FLAG_ENCODING_PARAM
2017 static const AVOption options[] = {
2018  { "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 },
2019  { "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 },
2020  { "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 },
2021  { "dash", "Create a WebM file conforming to WebM DASH specification", OFFSET(is_dash), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, FLAGS },
2022  { "dash_track_number", "Track number for the DASH stream", OFFSET(dash_track_number), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 127, FLAGS },
2023  { "allow_raw_vfw", "allow RAW VFW mode", OFFSET(allow_raw_vfw), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, FLAGS },
2024  { NULL },
2025 };
2026 
2027 #if CONFIG_MATROSKA_MUXER
2028 static const AVClass matroska_class = {
2029  .class_name = "matroska muxer",
2030  .item_name = av_default_item_name,
2031  .option = options,
2032  .version = LIBAVUTIL_VERSION_INT,
2033 };
2034 
2035 AVOutputFormat ff_matroska_muxer = {
2036  .name = "matroska",
2037  .long_name = NULL_IF_CONFIG_SMALL("Matroska"),
2038  .mime_type = "video/x-matroska",
2039  .extensions = "mkv",
2040  .priv_data_size = sizeof(MatroskaMuxContext),
2041  .audio_codec = CONFIG_LIBVORBIS_ENCODER ?
2043  .video_codec = CONFIG_LIBX264_ENCODER ?
2050  .codec_tag = (const AVCodecTag* const []){
2053  },
2054  .subtitle_codec = AV_CODEC_ID_ASS,
2055  .query_codec = mkv_query_codec,
2056  .priv_class = &matroska_class,
2057 };
2058 #endif
2059 
2060 #if CONFIG_WEBM_MUXER
2061 static const AVClass webm_class = {
2062  .class_name = "webm muxer",
2063  .item_name = av_default_item_name,
2064  .option = options,
2065  .version = LIBAVUTIL_VERSION_INT,
2066 };
2067 
2068 AVOutputFormat ff_webm_muxer = {
2069  .name = "webm",
2070  .long_name = NULL_IF_CONFIG_SMALL("WebM"),
2071  .mime_type = "video/webm",
2072  .extensions = "webm",
2073  .priv_data_size = sizeof(MatroskaMuxContext),
2074  .audio_codec = AV_CODEC_ID_VORBIS,
2075  .video_codec = AV_CODEC_ID_VP8,
2076  .subtitle_codec = AV_CODEC_ID_WEBVTT,
2082  .priv_class = &webm_class,
2083 };
2084 #endif
2085 
2086 #if CONFIG_MATROSKA_AUDIO_MUXER
2087 static const AVClass mka_class = {
2088  .class_name = "matroska audio muxer",
2089  .item_name = av_default_item_name,
2090  .option = options,
2091  .version = LIBAVUTIL_VERSION_INT,
2092 };
2093 AVOutputFormat ff_matroska_audio_muxer = {
2094  .name = "matroska",
2095  .long_name = NULL_IF_CONFIG_SMALL("Matroska Audio"),
2096  .mime_type = "audio/x-matroska",
2097  .extensions = "mka",
2098  .priv_data_size = sizeof(MatroskaMuxContext),
2099  .audio_codec = CONFIG_LIBVORBIS_ENCODER ?
2100  AV_CODEC_ID_VORBIS : AV_CODEC_ID_AC3,
2101  .video_codec = AV_CODEC_ID_NONE,
2107  .codec_tag = (const AVCodecTag* const []){
2109  },
2110  .priv_class = &mka_class,
2111 };
2112 #endif
unsigned int nb_chapters
Number of chapters in AVChapter array.
Definition: avformat.h:1412
static int mkv_write_packet_internal(AVFormatContext *s, AVPacket *pkt, int add_cue)
Definition: matroskaenc.c:1705
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:779
void avio_wb64(AVIOContext *s, uint64_t val)
Definition: aviobuf.c:410
#define NULL
Definition: coverity.c:32
static int mkv_write_vtt_blocks(AVFormatContext *s, AVIOContext *pb, AVPacket *pkt)
Definition: matroskaenc.c:1630
const char const char void * val
Definition: avisynth_c.h:672
#define MATROSKA_ID_BLOCKADDID
Definition: matroska.h:194
#define MATROSKA_ID_TRACKDEFAULTDURATION
Definition: matroska.h:104
void avio_wl16(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:416
static void put_ebml_size_unknown(AVIOContext *pb, int bytes)
Write an EBML size meaning "unknown size".
Definition: matroskaenc.c:162
const char * s
Definition: avisynth_c.h:669
Bytestream IO Context.
Definition: avio.h:68
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
static int mkv_check_tag(AVDictionary *m)
Definition: matroskaenc.c:1177
void ff_metadata_conv_ctx(AVFormatContext *ctx, const AVMetadataConv *d_conv, const AVMetadataConv *s_conv)
Definition: metadata.c:59
Views are packed per line, as if interlaced.
Definition: stereo3d.h:97
#define MATROSKA_ID_DATEUTC
Definition: matroska.h:71
void av_free_packet(AVPacket *pkt)
Free a packet.
Definition: avpacket.c:280
int sizebytes
how many bytes were reserved for the size
Definition: matroskaenc.c:57
The optional first identifier line of a WebVTT cue.
Definition: avcodec.h:1093
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:1683
int avio_close_dyn_buf(AVIOContext *s, uint8_t **pbuffer)
Return the written size and a pointer to the buffer.
Definition: aviobuf.c:1107
AVOption.
Definition: opt.h:255
hash context
Definition: sha.c:34
int64_t cluster_pos
file offset of the cluster containing the block
Definition: matroskaenc.c:78
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:101
Views are alternated temporally.
Definition: stereo3d.h:66
enum AVCodecID id
Definition: mxfenc.c:95
#define MATROSKA_ID_CUETRACKPOSITION
Definition: matroska.h:156
enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
Definition: utils.c:2705
#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:181
#define LIBAVUTIL_VERSION_INT
Definition: version.h:62
#define AV_RB64
Definition: intreadwrite.h:164
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:3993
#define MATROSKA_ID_AUDIOBITDEPTH
Definition: matroska.h:131
#define MATROSKA_ID_TRACKFLAGDEFAULT
Definition: matroska.h:99
static const AVCodecTag additional_subtitle_tags[]
Definition: matroskaenc.c:2009
This side data should be associated with a video stream and contains Stereoscopic 3D information in f...
Definition: avcodec.h:1036
static int mkv_write_attachments(AVFormatContext *s)
Definition: matroskaenc.c:1226
uint64_t pts
Definition: matroskaenc.c:75
AVRational sample_aspect_ratio
sample aspect ratio (0 if unknown)
Definition: avformat.h:867
int num
numerator
Definition: rational.h:44
int size
Definition: avcodec.h:1161
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
Definition: aviobuf.c:203
#define MATROSKA_ID_FILEDATA
Definition: matroska.h:210
AVFormatInternal * internal
An opaque field for libavformat internal usage.
Definition: avformat.h:1636
#define EBML_ID_DOCTYPEREADVERSION
Definition: matroska.h:42
#define AV_RB24
Definition: intreadwrite.h:64
static int mkv_write_header(AVFormatContext *s)
Definition: matroskaenc.c:1310
#define MATROSKA_ID_TRACKTYPE
Definition: matroska.h:80
enum AVMediaType codec_type
Definition: rtp.c:37
#define MATROSKA_ID_TAGTARGETS_CHAPTERUID
Definition: matroska.h:177
int ff_flac_is_native_layout(uint64_t channel_layout)
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1442
int64_t duration
duration of the block according to time base
Definition: matroskaenc.c:80
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_MUXINGAPP
Definition: matroska.h:70
int64_t cluster_time_limit
Definition: matroskaenc.c:120
#define MATROSKA_ID_AUDIOCHANNELS
Definition: matroska.h:132
unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum AVCodecID id)
Definition: utils.c:2695
int64_t segment_offset
Definition: matroskaenc.c:84
int version
Definition: avisynth_c.h:667
int avoid_negative_ts_use_pts
Definition: internal.h:101
const char * master
Definition: vf_curves.c:110
AVPacketSideData * side_data
An array of side data that applies to the whole stream (i.e.
Definition: avformat.h:907
static AVPacket pkt
#define av_le2ne32(x)
Definition: bswap.h:96
#define MATROSKA_ID_CUECLUSTERPOSITION
Definition: matroska.h:160
Definition: matroskaenc.c:60
AVDictionary * metadata
Definition: avformat.h:1183
int av_dup_packet(AVPacket *pkt)
Definition: avpacket.c:248
mkv_track * tracks
Definition: matroskaenc.c:111
#define AVFMT_ALLOW_FLUSH
Format allows flushing.
Definition: avformat.h:434
#define MATROSKA_ID_EDITIONFLAGDEFAULT
Definition: matroska.h:223
#define MATROSKA_ID_CLUSTERTIMECODE
Definition: matroska.h:188
int avio_open_dyn_buf(AVIOContext **s)
Open a write only memory stream.
Definition: aviobuf.c:1095
#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:436
#define MATROSKA_ID_CHAPTERTIMEEND
Definition: matroska.h:217
int64_t pos
absolute offset in the file where the master's elements start
Definition: matroskaenc.c:56
MatroskaVideoStereoModeType
Definition: matroska.h:248
int ff_vorbiscomment_write(uint8_t **p, AVDictionary **m, const char *vendor_string)
Write a VorbisComment into a buffer.
Definition: vorbiscomment.c:54
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
Definition: avcodec.h:1367
#define FLAGS
Definition: matroskaenc.c:2016
#define MATROSKA_ID_FILEDESC
Definition: matroska.h:207
Format I/O context.
Definition: avformat.h:1214
UID uid
Definition: mxfenc.c:1617
#define AV_RL64
Definition: intreadwrite.h:173
char str[32]
Definition: internal.h:46
int64_t cluster_pos
file offset of the current cluster
Definition: matroskaenc.c:105
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:71
#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:1984
Public dictionary API.
static int mkv_write_native_codecprivate(AVFormatContext *s, AVCodecContext *codec, AVIOContext *dyn_cp)
Definition: matroskaenc.c:595
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:108
void avio_wl32(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:318
enum AVSampleFormat sample_fmt
audio sample format
Definition: avcodec.h:1991
uint8_t
#define MATROSKA_ID_CHAPLANG
Definition: matroska.h:220
#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:1142
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:70
static int ebml_id_size(unsigned int id)
Definition: matroskaenc.c:145
#define OPUS_SEEK_PREROLL
Seek preroll value for opus.
Definition: matroskaenc.c:143
uint32_t flags
Definition: wv.h:40
#define AV_RB32
Definition: intreadwrite.h:130
int ff_mkv_stereo3d_conv(AVStream *st, MatroskaVideoStereoModeType stereo_mode)
Definition: matroska.c:151
uint64_t segmentpos
Definition: matroskaenc.c:62
int id
unique ID to identify the chapter
Definition: avformat.h:1180
#define MATROSKA_ID_TIMECODESCALE
Definition: matroska.h:66
#define MATROSKA_ID_SIMPLEBLOCK
Definition: matroska.h:196
#define MATROSKA_ID_EDITIONFLAGHIDDEN
Definition: matroska.h:222
int nb_side_data
The number of elements in the AVStream.side_data array.
Definition: avformat.h:911
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
Definition: avcodec.h:1353
#define MATROSKA_ID_BLOCKMORE
Definition: matroska.h:193
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1282
#define MATROSKA_ID_CUERELATIVEPOSITION
Definition: matroska.h:161
#define MATROSKA_ID_AUDIOOUTSAMPLINGFREQ
Definition: matroska.h:129
static double av_q2d(AVRational a)
Convert rational to double.
Definition: rational.h:80
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:39
int flags
Flags modifying the (de)muxer behaviour.
Definition: avformat.h:1325
uint8_t * data
Definition: avcodec.h:1160
static int64_t mkv_write_cues(AVFormatContext *s, mkv_cues *cues, mkv_track *tracks, int num_tracks)
Definition: matroskaenc.c:437
#define MATROSKA_ID_VIDEODISPLAYWIDTH
Definition: matroska.h:112
#define MATROSKA_ID_BLOCKADDITIONS
Definition: matroska.h:192
uint32_t tag
Definition: movenc.c:1332
static EbmlSyntax ebml_header[]
Definition: matroskadec.c:322
#define WV_HEADER_SIZE
Definition: wavpack.h:30
enum AVCodecID id
Definition: internal.h:47
static int put_flac_codecpriv(AVFormatContext *s, AVIOContext *pb, AVCodecContext *codec)
Definition: matroskaenc.c:531
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:191
uint8_t * data
Definition: avcodec.h:1110
#define MATROSKA_ID_CUES
Definition: matroska.h:58
int ff_vorbiscomment_length(AVDictionary *m, const char *vendor_string)
Calculate the length in bytes of a VorbisComment.
Definition: vorbiscomment.c:41
int64_t ts_offset
Definition: matroskaenc.c:92
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:273
static const uint8_t header[24]
Definition: sdr2.c:67
int bits_per_coded_sample
bits per sample/pixel from the demuxer (needed for huffyuv).
Definition: avcodec.h:2718
#define MATROSKA_ID_TRACKNUMBER
Definition: matroska.h:78
static int64_t duration
Definition: ffplay.c:320
void avio_write(AVIOContext *s, const unsigned char *buf, int size)
Definition: aviobuf.c:177
static int get_aac_sample_rates(AVFormatContext *s, AVCodecContext *codec, int *sample_rate, int *output_sample_rate)
Definition: matroskaenc.c:578
Definition: wv.h:34
#define AVFMT_FLAG_BITEXACT
When muxing, try to avoid writing any random/volatile data to the output.
Definition: avformat.h:1342
int duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
Definition: avcodec.h:1178
#define MATROSKA_ID_SEGMENTUID
Definition: matroska.h:72
static void put_ebml_num(AVIOContext *pb, uint64_t num, int bytes)
Write a number in EBML variable length format.
Definition: matroskaenc.c:186
#define av_log(a,...)
int has_cue
Definition: matroskaenc.c:91
#define AV_DISPOSITION_CAPTIONS
To specify text track kind (different from subtitles default).
Definition: avformat.h:777
unsigned m
Definition: audioconvert.c:187
static int mkv_add_seekhead_entry(mkv_seekhead *seekhead, unsigned int elementid, uint64_t filepos)
Definition: matroskaenc.c:332
int64_t segment_offset
the file offset to the beginning of the segment
Definition: matroskaenc.c:67
struct AVOutputFormat * oformat
The output container format.
Definition: avformat.h:1233
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: avcodec.h:1206
#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:140
ebml_master segment
Definition: matroskaenc.c:102
static int mkv_write_simpletag(AVIOContext *pb, AVDictionaryEntry *t)
Definition: matroskaenc.c:1108
#define MATROSKA_ID_VIDEOSTEREOMODE
Definition: matroska.h:122
uint32_t chapter_id_offset
Definition: matroskaenc.c:124
AVPacket cur_audio_pkt
Definition: matroskaenc.c:113
AVCodecID
Identify the syntax and semantics of the bitstream.
Definition: avcodec.h:102
static int mkv_write_tags(AVFormatContext *s)
Definition: matroskaenc.c:1188
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:175
int av_get_bits_per_sample(enum AVCodecID codec_id)
Return codec bits per sample.
Definition: utils.c:3295
AVDictionary * metadata
Metadata that applies to the whole file.
Definition: avformat.h:1423
int flags
Additional information about the frame packing.
Definition: stereo3d.h:132
#define MATROSKA_ID_BLOCKDURATION
Definition: matroska.h:200
#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:137
av_default_item_name
#define AVERROR(e)
Definition: error.h:43
unsigned int elementid
Definition: matroskaenc.c:61
int reserved_size
-1 if appending to file
Definition: matroskaenc.c:68
#define MATROSKA_ID_CLUSTER
Definition: matroska.h:62
const char * av_convert_lang_to(const char *lang, enum AVLangCodespace target_codespace)
Convert a language code to a target codespace.
Definition: avlanguage.c:736
static int put_xiph_codecpriv(AVFormatContext *s, AVIOContext *pb, AVCodecContext *codec)
Definition: matroskaenc.c:494
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:180
#define MATROSKA_ID_FILEMIMETYPE
Definition: matroska.h:209
int64_t convergence_duration
Time difference in AVStream->time_base units from the pts of this packet to the point at which the ou...
Definition: avcodec.h:1204
#define MATROSKA_ID_WRITINGAPP
Definition: matroska.h:69
int initial_padding
Audio only.
Definition: avcodec.h:3007
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:196
#define FF_COMPLIANCE_NORMAL
Definition: avcodec.h:2544
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:194
static int mkv_blockgroup_size(int pkt_size)
Definition: matroskaenc.c:1475
AVBufferRef * buf
A reference to the reference-counted buffer where the packet data is stored.
Definition: avcodec.h:1143
static int ebml_num_size(uint64_t num)
Calculate how many bytes are needed to represent a given number in EBML.
Definition: matroskaenc.c:172
int write_dts
Definition: matroskaenc.c:90
int final
Definition: wv.h:43
AVChapter ** chapters
Definition: avformat.h:1413
enum AVCodecID id
Definition: matroska.h:273
enum AVPacketSideDataType type
Definition: avcodec.h:1112
enum AVMediaType avcodec_get_type(enum AVCodecID codec_id)
Get the type of the given codec.
Definition: utils.c:3732
static int mkv_write_chapters(AVFormatContext *s)
Definition: matroskaenc.c:1060
int side_data_elems
Definition: avcodec.h:1172
#define EBML_ID_EBMLMAXIDLENGTH
Definition: matroska.h:38
#define MATROSKA_ID_CHAPTERFLAGHIDDEN
Definition: matroska.h:226
enum AVCodecID codec_id
Definition: mov_chan.c:433
Video is not stereoscopic (and metadata has to be there).
Definition: stereo3d.h:35
static const uint8_t offset[127][2]
Definition: vf_spp.c:92
uint32_t crc
Definition: wv.h:41
AVRational avg_frame_rate
Average framerate.
Definition: avformat.h:878
const AVCodecTag ff_codec_wav_tags[]
Definition: riff.c:369
#define FFMAX(a, b)
Definition: common.h:64
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:311
int ff_avc_parse_nal_units_buf(const uint8_t *buf_in, uint8_t **buf, int *size)
Definition: avc.c:92
int64_t filepos
Definition: matroskaenc.c:66
int flags
A combination of AV_PKT_FLAG values.
Definition: avcodec.h:1166
uint64_t channel_layout
Audio channel layout.
Definition: avcodec.h:2044
static void mkv_write_block(AVFormatContext *s, AVIOContext *pb, unsigned int blockid, AVPacket *pkt, int flags)
Definition: matroskaenc.c:1539
AVCodecContext * codec
Codec context associated with this stream.
Definition: avformat.h:814
const CodecMime ff_mkv_mime_tags[]
Definition: matroska.c:111
#define MATROSKA_ID_TAG
Definition: matroska.h:166
#define AV_DISPOSITION_FORCED
Track should be used during playback by default.
Definition: avformat.h:762
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
Definition: avformat.h:1270
#define LIBAVFORMAT_IDENT
Definition: version.h:44
int seekable
A combination of AVIO_SEEKABLE_ flags or 0 when the stream is not seekable.
Definition: avio.h:117
int void avio_flush(AVIOContext *s)
Force flushing of buffered data.
Definition: aviobuf.c:197
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:127
mkv_cuepoint * entries
Definition: matroskaenc.c:85
void ffio_fill(AVIOContext *s, int b, int count)
Definition: aviobuf.c:163
#define MATROSKA_ID_TAGTARGETS
Definition: matroska.h:173
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:168
ret
Definition: avfilter.c:974
int width
picture width / height.
Definition: avcodec.h:1412
#define MATROSKA_ID_CHAPTERFLAGENABLED
Definition: matroska.h:227
static int write_trailer(AVFormatContext *s1)
Definition: v4l2enc.c:94
int64_t ff_iso8601_to_unix_time(const char *datestr)
Convert a date string in ISO8601 format to Unix timestamp.
Definition: utils.c:4081
#define AVFMT_GLOBALHEADER
Format wants global header.
Definition: avformat.h:424
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:1073
#define MATROSKA_ID_SIMPLETAG
Definition: matroska.h:167
const char * name
Definition: avformat.h:466
internal header for RIFF based (de)muxers do NOT include this in end user applications ...
#define AV_STEREO3D_FLAG_INVERT
Inverted views, Right/Bottom represents the left view.
Definition: stereo3d.h:114
#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:1514
#define MATROSKA_ID_CHAPTERATOM
Definition: matroska.h:215
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
#define CONFIG_LIBVORBIS_ENCODER
Definition: config.h:1372
#define AV_RL32
Definition: intreadwrite.h:146
AVDictionary * metadata
Definition: avformat.h:869
Opaque data information usually sparse.
Definition: avutil.h:198
#define MATROSKA_ID_VIDEOCOLORSPACE
Definition: matroska.h:125
#define MATROSKA_ID_CHAPTERS
Definition: matroska.h:63
#define EBML_ID_VOID
Definition: matroska.h:45
#define OFFSET(x)
Definition: matroskaenc.c:2015
#define MATROSKA_ID_AUDIOSAMPLINGFREQ
Definition: matroska.h:128
const char * avcodec_get_name(enum AVCodecID id)
Get the name of a codec.
Definition: utils.c:2953
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:414
static void put_ebml_float(AVIOContext *pb, unsigned int elementid, double val)
Definition: matroskaenc.c:231
Stream structure.
Definition: avformat.h:795
#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:246
int64_t end
chapter start/end time in time_base units
Definition: avformat.h:1182
static int mkv_write_track(AVFormatContext *s, MatroskaMuxContext *mkv, int i, AVIOContext *pb, int default_stream_exists)
Definition: matroskaenc.c:802
#define AV_DISPOSITION_DEFAULT
Definition: avformat.h:750
sample_rate
enum AVStereo3DType type
How views are packed within the video.
Definition: stereo3d.h:127
#define AV_DISPOSITION_DESCRIPTIONS
Definition: avformat.h:778
AVS_Value src
Definition: avisynth_c.h:524
#define MATROSKA_ID_TRACKFLAGFORCED
Definition: matroska.h:100
#define MATROSKA_ID_TAGS
Definition: matroska.h:59
enum AVMediaType codec_type
Definition: avcodec.h:1247
enum AVCodecID codec_id
Definition: avcodec.h:1256
#define MATROSKA_ID_SEEKID
Definition: matroska.h:184
char * av_strdup(const char *s)
Duplicate the string s.
Definition: mem.c:265
int sample_rate
samples per second
Definition: avcodec.h:1983
AVIOContext * pb
I/O context.
Definition: avformat.h:1256
void avio_w8(AVIOContext *s, int b)
Definition: aviobuf.c:155
main external API structure.
Definition: avcodec.h:1239
#define MATROSKA_ID_BLOCK
Definition: matroska.h:199
#define MATROSKA_ID_INFO
Definition: matroska.h:56
#define MATROSKA_ID_TAGTARGETS_TRACKUID
Definition: matroska.h:176
#define MATROSKA_ID_TAGLANG
Definition: matroska.h:170
unsigned int codec_tag
fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
Definition: avcodec.h:1271
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:595
Data found in BlockAdditional element of matroska container.
Definition: avcodec.h:1088
GLint GLenum type
Definition: opengl_enc.c:105
int extradata_size
Definition: avcodec.h:1354
#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:69
#define MATROSKA_ID_SEEKENTRY
Definition: matroska.h:181
Describe the class of an AVClass context structure.
Definition: log.h:66
#define MATROSKA_ID_EDITIONENTRY
Definition: matroska.h:214
#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:140
#define MATROSKA_ID_BLOCKGROUP
Definition: matroska.h:191
#define MATROSKA_ID_VIDEOPIXELHEIGHT
Definition: matroska.h:115
static int mkv_write_tracks(AVFormatContext *s)
Definition: matroskaenc.c:1035
rational number numerator/denominator
Definition: rational.h:43
static void put_ebml_uint(AVIOContext *pb, unsigned int elementid, uint64_t val)
Definition: matroskaenc.c:205
#define MATROSKA_ID_CUEDURATION
Definition: matroska.h:162
void ff_put_bmp_header(AVIOContext *pb, AVCodecContext *enc, const AVCodecTag *tags, int for_asf, int ignore_extradata)
Definition: riffenc.c:205
#define MATROSKA_ID_CUETIME
Definition: matroska.h:155
static int64_t mkv_write_seekhead(AVIOContext *pb, mkv_seekhead *seekhead)
Write the seek head to the file and free it.
Definition: matroskaenc.c:360
Recommmends skipping the specified number of samples.
Definition: avcodec.h:1053
AVIOContext * dyn_bc
Definition: matroskaenc.c:101
AVMediaType
Definition: avutil.h:192
av_cold void av_lfg_init(AVLFG *c, unsigned int seed)
Definition: lfg.c:30
int64_t duration_offset
Definition: matroskaenc.c:107
#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:1486
static void put_ebml_id(AVIOContext *pb, unsigned int id)
Definition: matroskaenc.c:150
static void put_ebml_sint(AVIOContext *pb, unsigned int elementid, int64_t val)
Definition: matroskaenc.c:218
static int put_wv_codecpriv(AVIOContext *pb, AVCodecContext *codec)
Definition: matroskaenc.c:522
Views are on top of each other.
Definition: stereo3d.h:55
#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:422
#define MATROSKA_ID_CHAPTERDISPLAY
Definition: matroska.h:218
static int flags
Definition: cpu.c:47
#define MATROSKA_ID_FILENAME
Definition: matroska.h:208
int av_get_bytes_per_sample(enum AVSampleFormat sample_fmt)
Return number of bytes per sample.
Definition: samplefmt.c:104
#define MATROSKA_ID_BLOCKADDITIONAL
Definition: matroska.h:195
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:2000
int64_t start
Definition: avformat.h:1182
Views are next to each other.
Definition: stereo3d.h:45
#define MATROSKA_ID_VIDEOALPHAMODE
Definition: matroska.h:123
static int mkv_write_trailer(AVFormatContext *s)
Definition: matroskaenc.c:1884
Main libavformat public API header.
#define MATROSKA_ID_CUETRACK
Definition: matroska.h:159
#define MATROSKA_ID_SEEKPOSITION
Definition: matroska.h:185
#define MATROSKA_ID_CODECDELAY
Definition: matroska.h:94
#define MATROSKA_ID_CHAPTERTIMESTART
Definition: matroska.h:216
common internal api header.
static void put_ebml_binary(AVIOContext *pb, unsigned int elementid, const void *buf, int size)
Definition: matroskaenc.c:238
static int mkv_write_codecprivate(AVFormatContext *s, AVIOContext *pb, AVCodecContext *codec, int native_id, int qt_id)
Definition: matroskaenc.c:634
static double c[64]
static int mkv_write_flush_packet(AVFormatContext *s, AVPacket *pkt)
Definition: matroskaenc.c:1860
int disposition
AV_DISPOSITION_* bit field.
Definition: avformat.h:858
AVBufferRef * av_buffer_ref(AVBufferRef *buf)
Create a new reference to an AVBuffer.
Definition: buffer.c:92
static void put_ebml_void(AVIOContext *pb, uint64_t size)
Write a void element of a given size.
Definition: matroskaenc.c:258
AVRational time_base
time base in which the start/end timestamps are specified
Definition: avformat.h:1181
void * av_realloc_array(void *ptr, size_t nmemb, size_t size)
Definition: mem.c:206
void av_init_packet(AVPacket *pkt)
Initialize optional fields of a packet with default values.
Definition: avpacket.c:49
char * key
Definition: dict.h:87
int den
denominator
Definition: rational.h:45
#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:1099
#define MATROSKA_ID_SEEKHEAD
Definition: matroska.h:60
ASS as defined in Matroska.
Definition: avcodec.h:525
#define EBML_ID_HEADER
Definition: matroska.h:33
#define AVFMT_VARIABLE_FPS
Format allows variable fps.
Definition: avformat.h:428
ebml_master cluster
Definition: matroskaenc.c:104
#define av_free(p)
char * value
Definition: dict.h:88
#define MATROSKA_ID_POINTENTRY
Definition: matroska.h:152
mkv_seekhead_entry * entries
Definition: matroskaenc.c:70
int len
int channels
number of audio channels
Definition: avcodec.h:1984
#define av_log2
Definition: intmath.h:105
static int mkv_write_stereo_mode(AVFormatContext *s, AVIOContext *pb, AVStream *st, int mode, int *h_width, int *h_height)
Definition: matroskaenc.c:704
#define MATROSKA_ID_FILEUID
Definition: matroska.h:211
int ff_put_wav_header(AVIOContext *pb, AVCodecContext *enc, int flags)
Write WAVEFORMAT header structure.
Definition: riffenc.c:54
Views are packed in a checkerboard-like structure per pixel.
Definition: stereo3d.h:76
void * priv_data
Format private data.
Definition: avformat.h:1242
#define MATROSKA_ID_CHAPTERUID
Definition: matroska.h:225
Views are packed per column.
Definition: stereo3d.h:107
static void write_header(FFV1Context *f)
Definition: ffv1enc.c:493
int64_t relative_pos
relative offset from the position of the cluster containing the block
Definition: matroskaenc.c:79
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed...
Definition: avcodec.h:1159
static void mkv_flush_dynbuf(AVFormatContext *s)
Definition: matroskaenc.c:1668
static const AVOption options[]
Definition: matroskaenc.c:2017
static void * av_mallocz_array(size_t nmemb, size_t size)
Definition: mem.h:228
#define EBML_ID_EBMLMAXSIZELENGTH
Definition: matroska.h:39
void avio_wb32(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:326
#define MATROSKA_ID_CHAPSTRING
Definition: matroska.h:219
#define av_freep(p)
#define MATROSKA_ID_TAGSTRING
Definition: matroska.h:169
#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:72
uint8_t * av_packet_get_side_data(AVPacket *pkt, enum AVPacketSideDataType type, int *size)
Get side information from packet.
Definition: avpacket.c:324
#define MODE_MATROSKAv2
Definition: matroskaenc.c:95
uint32_t av_get_random_seed(void)
Get a seed to use in conjunction with random functions.
Definition: random_seed.c:109
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:1089
const CodecMime ff_mkv_image_mime_tags[]
Definition: matroska.c:102
#define MODE_WEBM
Definition: matroskaenc.c:96
static int mkv_write_packet(AVFormatContext *s, AVPacket *pkt)
Definition: matroskaenc.c:1782
#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:133
static mkv_cues * mkv_start_cues(int64_t segment_offset)
Definition: matroskaenc.c:404
int stream_index
Definition: avcodec.h:1162
int num_entries
Definition: matroskaenc.c:86
#define EBML_ID_DOCTYPEVERSION
Definition: matroska.h:41
static void end_ebml_master(AVIOContext *pb, ebml_master master)
Definition: matroskaenc.c:284
int64_t segment_offset
Definition: matroskaenc.c:103
#define CONFIG_LIBX264_ENCODER
Definition: config.h:1377
int av_copy_packet_side_data(AVPacket *dst, const AVPacket *src)
Copy packet side data.
Definition: avpacket.c:223
#define MATROSKA_ID_ATTACHEDFILE
Definition: matroska.h:206
static ebml_master start_ebml_master(AVIOContext *pb, unsigned int elementid, uint64_t expectedsize)
Definition: matroskaenc.c:275
mkv_seekhead * main_seekhead
Definition: matroskaenc.c:109
This structure stores compressed data.
Definition: avcodec.h:1137
static int write_packet(AVFormatContext *s1, AVPacket *pkt)
Definition: v4l2enc.c:86
void * av_mallocz(size_t size)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...
Definition: mem.c:250
uint32_t blocksize
Definition: wv.h:35
static int mkv_query_codec(enum AVCodecID codec_id, int std_compliance)
Definition: matroskaenc.c:1967
static void put_xiph_size(AVIOContext *pb, int size)
Definition: matroskaenc.c:294
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: avcodec.h:1153
#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:241
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:203
#define FF_PUT_WAV_HEADER_FORCE_WAVEFORMATEX
Tell ff_put_wav_header() to use WAVEFORMATEX even for PCM codecs.
Definition: riff.h:53