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matroskaenc.c
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1 /*
2  * Matroska muxer
3  * Copyright (c) 2007 David Conrad
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 #include <stdint.h>
23 
24 #include "avc.h"
25 #include "hevc.h"
26 #include "avformat.h"
27 #include "avio_internal.h"
28 #include "avlanguage.h"
29 #include "flacenc.h"
30 #include "internal.h"
31 #include "isom.h"
32 #include "matroska.h"
33 #include "riff.h"
34 #include "subtitles.h"
35 #include "vorbiscomment.h"
36 #include "wv.h"
37 
38 #include "libavutil/avstring.h"
40 #include "libavutil/dict.h"
41 #include "libavutil/intfloat.h"
42 #include "libavutil/intreadwrite.h"
43 #include "libavutil/lfg.h"
45 #include "libavutil/mathematics.h"
46 #include "libavutil/opt.h"
47 #include "libavutil/random_seed.h"
48 #include "libavutil/rational.h"
49 #include "libavutil/samplefmt.h"
50 #include "libavutil/sha.h"
51 #include "libavutil/stereo3d.h"
52 
53 #include "libavcodec/xiph.h"
54 #include "libavcodec/mpeg4audio.h"
55 #include "libavcodec/internal.h"
56 
57 typedef struct ebml_master {
58  int64_t pos; ///< absolute offset in the file where the master's elements start
59  int sizebytes; ///< how many bytes were reserved for the size
60 } ebml_master;
61 
62 typedef struct mkv_seekhead_entry {
63  unsigned int elementid;
64  uint64_t segmentpos;
66 
67 typedef struct mkv_seekhead {
68  int64_t filepos;
69  int64_t segment_offset; ///< the file offset to the beginning of the segment
70  int reserved_size; ///< -1 if appending to file
74 } mkv_seekhead;
75 
76 typedef struct mkv_cuepoint {
77  uint64_t pts;
79  int tracknum;
80  int64_t cluster_pos; ///< file offset of the cluster containing the block
81  int64_t relative_pos; ///< relative offset from the position of the cluster containing the block
82  int64_t duration; ///< duration of the block according to time base
83 } mkv_cuepoint;
84 
85 typedef struct mkv_cues {
86  int64_t segment_offset;
89 } mkv_cues;
90 
91 typedef struct mkv_track {
92  int write_dts;
93  int has_cue;
94  int64_t ts_offset;
95 } mkv_track;
96 
97 #define MODE_MATROSKAv2 0x01
98 #define MODE_WEBM 0x02
99 
100 /** Maximum number of tracks allowed in a Matroska file (with track numbers in
101  * range 1 to 126 (inclusive) */
102 #define MAX_TRACKS 126
103 
104 typedef struct MatroskaMuxContext {
105  const AVClass *class;
106  int mode;
109  int64_t segment_offset;
111  int64_t cluster_pos; ///< file offset of the current cluster
112  int64_t cluster_pts;
114  int64_t duration;
118 
120 
122 
125  int64_t cues_pos;
127  int is_dash;
129  int is_live;
130 
133 
135 
138 
141 
142 
143 /** 2 bytes * 3 for EBML IDs, 3 1-byte EBML lengths, 8 bytes for 64 bit
144  * offset, 4 bytes for target EBML ID */
145 #define MAX_SEEKENTRY_SIZE 21
146 
147 /** per-cuepoint-track - 5 1-byte EBML IDs, 5 1-byte EBML sizes, 4
148  * 8-byte uint max */
149 #define MAX_CUETRACKPOS_SIZE 42
150 
151 /** per-cuepoint - 2 1-byte EBML IDs, 2 1-byte EBML sizes, 8-byte uint max */
152 #define MAX_CUEPOINT_SIZE(num_tracks) 12 + MAX_CUETRACKPOS_SIZE * num_tracks
153 
154 /** Seek preroll value for opus */
155 #define OPUS_SEEK_PREROLL 80000000
156 
157 static int ebml_id_size(unsigned int id)
158 {
159  return (av_log2(id + 1) - 1) / 7 + 1;
160 }
161 
162 static void put_ebml_id(AVIOContext *pb, unsigned int id)
163 {
164  int i = ebml_id_size(id);
165  while (i--)
166  avio_w8(pb, (uint8_t)(id >> (i * 8)));
167 }
168 
169 /**
170  * Write an EBML size meaning "unknown size".
171  *
172  * @param bytes The number of bytes the size should occupy (maximum: 8).
173  */
174 static void put_ebml_size_unknown(AVIOContext *pb, int bytes)
175 {
176  av_assert0(bytes <= 8);
177  avio_w8(pb, 0x1ff >> bytes);
178  ffio_fill(pb, 0xff, bytes - 1);
179 }
180 
181 /**
182  * Calculate how many bytes are needed to represent a given number in EBML.
183  */
184 static int ebml_num_size(uint64_t num)
185 {
186  int bytes = 1;
187  while ((num + 1) >> bytes * 7)
188  bytes++;
189  return bytes;
190 }
191 
192 /**
193  * Write a number in EBML variable length format.
194  *
195  * @param bytes The number of bytes that need to be used to write the number.
196  * If zero, any number of bytes can be used.
197  */
198 static void put_ebml_num(AVIOContext *pb, uint64_t num, int bytes)
199 {
200  int i, needed_bytes = ebml_num_size(num);
201 
202  // sizes larger than this are currently undefined in EBML
203  av_assert0(num < (1ULL << 56) - 1);
204 
205  if (bytes == 0)
206  // don't care how many bytes are used, so use the min
207  bytes = needed_bytes;
208  // the bytes needed to write the given size would exceed the bytes
209  // that we need to use, so write unknown size. This shouldn't happen.
210  av_assert0(bytes >= needed_bytes);
211 
212  num |= 1ULL << bytes * 7;
213  for (i = bytes - 1; i >= 0; i--)
214  avio_w8(pb, (uint8_t)(num >> i * 8));
215 }
216 
217 static void put_ebml_uint(AVIOContext *pb, unsigned int elementid, uint64_t val)
218 {
219  int i, bytes = 1;
220  uint64_t tmp = val;
221  while (tmp >>= 8)
222  bytes++;
223 
224  put_ebml_id(pb, elementid);
225  put_ebml_num(pb, bytes, 0);
226  for (i = bytes - 1; i >= 0; i--)
227  avio_w8(pb, (uint8_t)(val >> i * 8));
228 }
229 
230 static void put_ebml_sint(AVIOContext *pb, unsigned int elementid, int64_t val)
231 {
232  int i, bytes = 1;
233  uint64_t tmp = 2*(val < 0 ? val^-1 : val);
234 
235  while (tmp>>=8) bytes++;
236 
237  put_ebml_id(pb, elementid);
238  put_ebml_num(pb, bytes, 0);
239  for (i = bytes - 1; i >= 0; i--)
240  avio_w8(pb, (uint8_t)(val >> i * 8));
241 }
242 
243 static void put_ebml_float(AVIOContext *pb, unsigned int elementid, double val)
244 {
245  put_ebml_id(pb, elementid);
246  put_ebml_num(pb, 8, 0);
247  avio_wb64(pb, av_double2int(val));
248 }
249 
250 static void put_ebml_binary(AVIOContext *pb, unsigned int elementid,
251  const void *buf, int size)
252 {
253  put_ebml_id(pb, elementid);
254  put_ebml_num(pb, size, 0);
255  avio_write(pb, buf, size);
256 }
257 
258 static void put_ebml_string(AVIOContext *pb, unsigned int elementid,
259  const char *str)
260 {
261  put_ebml_binary(pb, elementid, str, strlen(str));
262 }
263 
264 /**
265  * Write a void element of a given size. Useful for reserving space in
266  * the file to be written to later.
267  *
268  * @param size The number of bytes to reserve, which must be at least 2.
269  */
270 static void put_ebml_void(AVIOContext *pb, uint64_t size)
271 {
272  int64_t currentpos = avio_tell(pb);
273 
274  av_assert0(size >= 2);
275 
277  // we need to subtract the length needed to store the size from the
278  // size we need to reserve so 2 cases, we use 8 bytes to store the
279  // size if possible, 1 byte otherwise
280  if (size < 10)
281  put_ebml_num(pb, size - 1, 0);
282  else
283  put_ebml_num(pb, size - 9, 8);
284  ffio_fill(pb, 0, currentpos + size - avio_tell(pb));
285 }
286 
287 static ebml_master start_ebml_master(AVIOContext *pb, unsigned int elementid,
288  uint64_t expectedsize)
289 {
290  int bytes = expectedsize ? ebml_num_size(expectedsize) : 8;
291  put_ebml_id(pb, elementid);
292  put_ebml_size_unknown(pb, bytes);
293  return (ebml_master) {avio_tell(pb), bytes };
294 }
295 
297 {
298  int64_t pos = avio_tell(pb);
299 
300  if (avio_seek(pb, master.pos - master.sizebytes, SEEK_SET) < 0)
301  return;
302  put_ebml_num(pb, pos - master.pos, master.sizebytes);
303  avio_seek(pb, pos, SEEK_SET);
304 }
305 
306 static void put_xiph_size(AVIOContext *pb, int size)
307 {
308  ffio_fill(pb, 255, size / 255);
309  avio_w8(pb, size % 255);
310 }
311 
312 /**
313  * Free the members allocated in the mux context.
314  */
315 static void mkv_free(MatroskaMuxContext *mkv) {
316  if (mkv->main_seekhead) {
318  av_freep(&mkv->main_seekhead);
319  }
320  if (mkv->cues) {
321  av_freep(&mkv->cues->entries);
322  av_freep(&mkv->cues);
323  }
324  av_freep(&mkv->tracks);
325  av_freep(&mkv->stream_durations);
327 }
328 
329 /**
330  * Initialize a mkv_seekhead element to be ready to index level 1 Matroska
331  * elements. If a maximum number of elements is specified, enough space
332  * will be reserved at the current file location to write a seek head of
333  * that size.
334  *
335  * @param segment_offset The absolute offset to the position in the file
336  * where the segment begins.
337  * @param numelements The maximum number of elements that will be indexed
338  * by this seek head, 0 if unlimited.
339  */
340 static mkv_seekhead *mkv_start_seekhead(AVIOContext *pb, int64_t segment_offset,
341  int numelements)
342 {
343  mkv_seekhead *new_seekhead = av_mallocz(sizeof(mkv_seekhead));
344  if (!new_seekhead)
345  return NULL;
346 
347  new_seekhead->segment_offset = segment_offset;
348 
349  if (numelements > 0) {
350  new_seekhead->filepos = avio_tell(pb);
351  // 21 bytes max for a seek entry, 10 bytes max for the SeekHead ID
352  // and size, and 3 bytes to guarantee that an EBML void element
353  // will fit afterwards
354  new_seekhead->reserved_size = numelements * MAX_SEEKENTRY_SIZE + 13;
355  new_seekhead->max_entries = numelements;
356  put_ebml_void(pb, new_seekhead->reserved_size);
357  }
358  return new_seekhead;
359 }
360 
361 static int mkv_add_seekhead_entry(mkv_seekhead *seekhead, unsigned int elementid, uint64_t filepos)
362 {
363  mkv_seekhead_entry *entries = seekhead->entries;
364 
365  // don't store more elements than we reserved space for
366  if (seekhead->max_entries > 0 && seekhead->max_entries <= seekhead->num_entries)
367  return -1;
368 
369  entries = av_realloc_array(entries, seekhead->num_entries + 1, sizeof(mkv_seekhead_entry));
370  if (!entries)
371  return AVERROR(ENOMEM);
372  seekhead->entries = entries;
373 
374  seekhead->entries[seekhead->num_entries].elementid = elementid;
375  seekhead->entries[seekhead->num_entries++].segmentpos = filepos - seekhead->segment_offset;
376 
377  return 0;
378 }
379 
380 /**
381  * Write the seek head to the file and free it. If a maximum number of
382  * elements was specified to mkv_start_seekhead(), the seek head will
383  * be written at the location reserved for it. Otherwise, it is written
384  * at the current location in the file.
385  *
386  * @return The file offset where the seekhead was written,
387  * -1 if an error occurred.
388  */
390 {
391  mkv_seekhead *seekhead = mkv->main_seekhead;
392  ebml_master metaseek, seekentry;
393  int64_t currentpos;
394  int i;
395 
396  currentpos = avio_tell(pb);
397 
398  if (seekhead->reserved_size > 0) {
399  if (avio_seek(pb, seekhead->filepos, SEEK_SET) < 0) {
400  currentpos = -1;
401  goto fail;
402  }
403  }
404 
405  metaseek = start_ebml_master(pb, MATROSKA_ID_SEEKHEAD, seekhead->reserved_size);
406  for (i = 0; i < seekhead->num_entries; i++) {
407  mkv_seekhead_entry *entry = &seekhead->entries[i];
408 
410 
412  put_ebml_num(pb, ebml_id_size(entry->elementid), 0);
413  put_ebml_id(pb, entry->elementid);
414 
416  end_ebml_master(pb, seekentry);
417  }
418  end_ebml_master(pb, metaseek);
419 
420  if (seekhead->reserved_size > 0) {
421  uint64_t remaining = seekhead->filepos + seekhead->reserved_size - avio_tell(pb);
422  put_ebml_void(pb, remaining);
423  avio_seek(pb, currentpos, SEEK_SET);
424 
425  currentpos = seekhead->filepos;
426  }
427 fail:
429  av_freep(&mkv->main_seekhead);
430 
431  return currentpos;
432 }
433 
434 static mkv_cues *mkv_start_cues(int64_t segment_offset)
435 {
436  mkv_cues *cues = av_mallocz(sizeof(mkv_cues));
437  if (!cues)
438  return NULL;
439 
440  cues->segment_offset = segment_offset;
441  return cues;
442 }
443 
444 static int mkv_add_cuepoint(mkv_cues *cues, int stream, int tracknum, int64_t ts,
445  int64_t cluster_pos, int64_t relative_pos, int64_t duration)
446 {
447  mkv_cuepoint *entries = cues->entries;
448 
449  if (ts < 0)
450  return 0;
451 
452  entries = av_realloc_array(entries, cues->num_entries + 1, sizeof(mkv_cuepoint));
453  if (!entries)
454  return AVERROR(ENOMEM);
455  cues->entries = entries;
456 
457  cues->entries[cues->num_entries].pts = ts;
458  cues->entries[cues->num_entries].stream_idx = stream;
459  cues->entries[cues->num_entries].tracknum = tracknum;
460  cues->entries[cues->num_entries].cluster_pos = cluster_pos - cues->segment_offset;
461  cues->entries[cues->num_entries].relative_pos = relative_pos;
462  cues->entries[cues->num_entries++].duration = duration;
463 
464  return 0;
465 }
466 
467 static int64_t mkv_write_cues(AVFormatContext *s, mkv_cues *cues, mkv_track *tracks, int num_tracks)
468 {
469  AVIOContext *pb = s->pb;
470  ebml_master cues_element;
471  int64_t currentpos;
472  int i, j;
473 
474  currentpos = avio_tell(pb);
475  cues_element = start_ebml_master(pb, MATROSKA_ID_CUES, 0);
476 
477  for (i = 0; i < cues->num_entries; i++) {
478  ebml_master cuepoint, track_positions;
479  mkv_cuepoint *entry = &cues->entries[i];
480  uint64_t pts = entry->pts;
481  int ctp_nb = 0;
482 
483  // Calculate the number of entries, so we know the element size
484  for (j = 0; j < num_tracks; j++)
485  tracks[j].has_cue = 0;
486  for (j = 0; j < cues->num_entries - i && entry[j].pts == pts; j++) {
487  int tracknum = entry[j].stream_idx;
488  av_assert0(tracknum>=0 && tracknum<num_tracks);
489  if (tracks[tracknum].has_cue && s->streams[tracknum]->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE)
490  continue;
491  tracks[tracknum].has_cue = 1;
492  ctp_nb ++;
493  }
494 
497 
498  // put all the entries from different tracks that have the exact same
499  // timestamp into the same CuePoint
500  for (j = 0; j < num_tracks; j++)
501  tracks[j].has_cue = 0;
502  for (j = 0; j < cues->num_entries - i && entry[j].pts == pts; j++) {
503  int tracknum = entry[j].stream_idx;
504  av_assert0(tracknum>=0 && tracknum<num_tracks);
505  if (tracks[tracknum].has_cue && s->streams[tracknum]->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE)
506  continue;
507  tracks[tracknum].has_cue = 1;
509  put_ebml_uint(pb, MATROSKA_ID_CUETRACK , entry[j].tracknum );
510  put_ebml_uint(pb, MATROSKA_ID_CUECLUSTERPOSITION , entry[j].cluster_pos);
511  put_ebml_uint(pb, MATROSKA_ID_CUERELATIVEPOSITION, entry[j].relative_pos);
512  if (entry[j].duration != -1)
514  end_ebml_master(pb, track_positions);
515  }
516  i += j - 1;
517  end_ebml_master(pb, cuepoint);
518  }
519  end_ebml_master(pb, cues_element);
520 
521  return currentpos;
522 }
523 
525 {
526  const uint8_t *header_start[3];
527  int header_len[3];
528  int first_header_size;
529  int j;
530 
531  if (par->codec_id == AV_CODEC_ID_VORBIS)
532  first_header_size = 30;
533  else
534  first_header_size = 42;
535 
537  first_header_size, header_start, header_len) < 0) {
538  av_log(s, AV_LOG_ERROR, "Extradata corrupt.\n");
539  return -1;
540  }
541 
542  avio_w8(pb, 2); // number packets - 1
543  for (j = 0; j < 2; j++) {
544  put_xiph_size(pb, header_len[j]);
545  }
546  for (j = 0; j < 3; j++)
547  avio_write(pb, header_start[j], header_len[j]);
548 
549  return 0;
550 }
551 
553 {
554  if (par->extradata && par->extradata_size == 2)
555  avio_write(pb, par->extradata, 2);
556  else
557  avio_wl16(pb, 0x403); // fallback to the version mentioned in matroska specs
558  return 0;
559 }
560 
562  AVIOContext *pb, AVCodecParameters *par)
563 {
564  int write_comment = (par->channel_layout &&
565  !(par->channel_layout & ~0x3ffffULL) &&
567  int ret = ff_flac_write_header(pb, par->extradata, par->extradata_size,
568  !write_comment);
569 
570  if (ret < 0)
571  return ret;
572 
573  if (write_comment) {
574  const char *vendor = (s->flags & AVFMT_FLAG_BITEXACT) ?
575  "Lavf" : LIBAVFORMAT_IDENT;
576  AVDictionary *dict = NULL;
577  uint8_t buf[32], *data, *p;
578  int64_t len;
579 
580  snprintf(buf, sizeof(buf), "0x%"PRIx64, par->channel_layout);
581  av_dict_set(&dict, "WAVEFORMATEXTENSIBLE_CHANNEL_MASK", buf, 0);
582 
583  len = ff_vorbiscomment_length(dict, vendor);
584  if (len >= ((1<<24) - 4))
585  return AVERROR(EINVAL);
586 
587  data = av_malloc(len + 4);
588  if (!data) {
589  av_dict_free(&dict);
590  return AVERROR(ENOMEM);
591  }
592 
593  data[0] = 0x84;
594  AV_WB24(data + 1, len);
595 
596  p = data + 4;
597  ff_vorbiscomment_write(&p, &dict, vendor);
598 
599  avio_write(pb, data, len + 4);
600 
601  av_freep(&data);
602  av_dict_free(&dict);
603  }
604 
605  return 0;
606 }
607 
609  int *sample_rate, int *output_sample_rate)
610 {
611  MPEG4AudioConfig mp4ac;
612 
613  if (avpriv_mpeg4audio_get_config(&mp4ac, par->extradata,
614  par->extradata_size * 8, 1) < 0) {
615  av_log(s, AV_LOG_ERROR,
616  "Error parsing AAC extradata, unable to determine samplerate.\n");
617  return AVERROR(EINVAL);
618  }
619 
620  *sample_rate = mp4ac.sample_rate;
621  *output_sample_rate = mp4ac.ext_sample_rate;
622  return 0;
623 }
624 
626  AVCodecParameters *par,
627  AVIOContext *dyn_cp)
628 {
629  switch (par->codec_id) {
630  case AV_CODEC_ID_VORBIS:
631  case AV_CODEC_ID_THEORA:
632  return put_xiph_codecpriv(s, dyn_cp, par);
633  case AV_CODEC_ID_FLAC:
634  return put_flac_codecpriv(s, dyn_cp, par);
635  case AV_CODEC_ID_WAVPACK:
636  return put_wv_codecpriv(dyn_cp, par);
637  case AV_CODEC_ID_H264:
638  return ff_isom_write_avcc(dyn_cp, par->extradata,
639  par->extradata_size);
640  case AV_CODEC_ID_HEVC:
641  ff_isom_write_hvcc(dyn_cp, par->extradata,
642  par->extradata_size, 0);
643  return 0;
644  case AV_CODEC_ID_ALAC:
645  if (par->extradata_size < 36) {
646  av_log(s, AV_LOG_ERROR,
647  "Invalid extradata found, ALAC expects a 36-byte "
648  "QuickTime atom.");
649  return AVERROR_INVALIDDATA;
650  } else
651  avio_write(dyn_cp, par->extradata + 12,
652  par->extradata_size - 12);
653  break;
654  default:
655  if (par->codec_id == AV_CODEC_ID_PRORES &&
657  avio_wl32(dyn_cp, par->codec_tag);
658  } else if (par->extradata_size && par->codec_id != AV_CODEC_ID_TTA)
659  avio_write(dyn_cp, par->extradata, par->extradata_size);
660  }
661 
662  return 0;
663 }
664 
666  AVCodecParameters *par,
667  int native_id, int qt_id)
668 {
669  AVIOContext *dyn_cp;
670  uint8_t *codecpriv;
671  int ret, codecpriv_size;
672 
673  ret = avio_open_dyn_buf(&dyn_cp);
674  if (ret < 0)
675  return ret;
676 
677  if (native_id) {
678  ret = mkv_write_native_codecprivate(s, par, dyn_cp);
679  } else if (par->codec_type == AVMEDIA_TYPE_VIDEO) {
680  if (qt_id) {
681  if (!par->codec_tag)
683  par->codec_id);
684  if (par->extradata_size) {
687  ) {
688  int i;
689  avio_wb32(dyn_cp, 0x5a + par->extradata_size);
690  avio_wl32(dyn_cp, par->codec_tag);
691  for(i = 0; i < 0x5a - 8; i++)
692  avio_w8(dyn_cp, 0);
693  }
694  avio_write(dyn_cp, par->extradata, par->extradata_size);
695  }
696  } else {
698  av_log(s, AV_LOG_WARNING, "codec %s is not supported by this format\n",
699  avcodec_get_name(par->codec_id));
700 
701  if (!par->codec_tag)
703  par->codec_id);
704  if (!par->codec_tag && par->codec_id != AV_CODEC_ID_RAWVIDEO) {
705  av_log(s, AV_LOG_ERROR, "No bmp codec tag found for codec %s\n",
706  avcodec_get_name(par->codec_id));
707  ret = AVERROR(EINVAL);
708  }
709 
710  ff_put_bmp_header(dyn_cp, par, ff_codec_bmp_tags, 0, 0);
711  }
712  } else if (par->codec_type == AVMEDIA_TYPE_AUDIO) {
713  unsigned int tag;
715  if (!tag) {
716  av_log(s, AV_LOG_ERROR, "No wav codec tag found for codec %s\n",
717  avcodec_get_name(par->codec_id));
718  ret = AVERROR(EINVAL);
719  }
720  if (!par->codec_tag)
721  par->codec_tag = tag;
722 
724  }
725 
726  codecpriv_size = avio_close_dyn_buf(dyn_cp, &codecpriv);
727  if (codecpriv_size)
729  codecpriv_size);
730  av_free(codecpriv);
731  return ret;
732 }
733 
735  int side_data_size = 0;
736  const uint8_t *side_data = av_stream_get_side_data(
737  st, AV_PKT_DATA_MASTERING_DISPLAY_METADATA, &side_data_size);
739 
740  if (par->color_trc != AVCOL_TRC_UNSPECIFIED &&
741  par->color_trc < AVCOL_TRC_NB) {
743  par->color_trc);
744  }
745  if (par->color_space != AVCOL_SPC_UNSPECIFIED &&
746  par->color_space < AVCOL_SPC_NB) {
748  }
750  par->color_primaries < AVCOL_PRI_NB) {
752  }
753  if (par->color_range != AVCOL_RANGE_UNSPECIFIED &&
754  par->color_range < AVCOL_RANGE_NB) {
756  }
757  if (side_data_size == sizeof(AVMasteringDisplayMetadata)) {
758  ebml_master meta_element = start_ebml_master(
760  const AVMasteringDisplayMetadata *metadata =
761  (const AVMasteringDisplayMetadata*)side_data;
762  if (metadata->has_primaries) {
764  av_q2d(metadata->display_primaries[0][0]));
766  av_q2d(metadata->display_primaries[0][1]));
768  av_q2d(metadata->display_primaries[1][0]));
770  av_q2d(metadata->display_primaries[1][1]));
772  av_q2d(metadata->display_primaries[2][0]));
774  av_q2d(metadata->display_primaries[2][1]));
776  av_q2d(metadata->white_point[0]));
778  av_q2d(metadata->white_point[1]));
779  }
780  if (metadata->has_luminance) {
782  av_q2d(metadata->max_luminance));
784  av_q2d(metadata->min_luminance));
785  }
786  end_ebml_master(pb, meta_element);
787  }
788  end_ebml_master(pb, colorinfo);
789  return 0;
790 }
791 
793  enum AVFieldOrder field_order)
794 {
795  switch (field_order) {
796  case AV_FIELD_UNKNOWN:
799  break;
803  break;
804  case AV_FIELD_TT:
805  case AV_FIELD_BB:
806  case AV_FIELD_TB:
807  case AV_FIELD_BT:
810  switch (field_order) {
811  case AV_FIELD_TT:
814  break;
815  case AV_FIELD_BB:
818  break;
819  case AV_FIELD_TB:
822  break;
823  case AV_FIELD_BT:
826  break;
827  }
828  }
829 }
830 
832  AVStream *st, int mode, int *h_width, int *h_height)
833 {
834  int i;
835  int ret = 0;
838 
839  *h_width = 1;
840  *h_height = 1;
841  // convert metadata into proper side data and add it to the stream
842  if ((tag = av_dict_get(st->metadata, "stereo_mode", NULL, 0)) ||
843  (tag = av_dict_get( s->metadata, "stereo_mode", NULL, 0))) {
844  int stereo_mode = atoi(tag->value);
845 
846  for (i=0; i<MATROSKA_VIDEO_STEREOMODE_TYPE_NB; i++)
847  if (!strcmp(tag->value, ff_matroska_video_stereo_mode[i])){
848  stereo_mode = i;
849  break;
850  }
851 
852  if (stereo_mode < MATROSKA_VIDEO_STEREOMODE_TYPE_NB &&
853  stereo_mode != 10 && stereo_mode != 12) {
854  int ret = ff_mkv_stereo3d_conv(st, stereo_mode);
855  if (ret < 0)
856  return ret;
857  }
858  }
859 
860  // iterate to find the stereo3d side data
861  for (i = 0; i < st->nb_side_data; i++) {
862  AVPacketSideData sd = st->side_data[i];
863  if (sd.type == AV_PKT_DATA_STEREO3D) {
864  AVStereo3D *stereo = (AVStereo3D *)sd.data;
865 
866  switch (stereo->type) {
867  case AV_STEREO3D_2D:
869  break;
871  format = (stereo->flags & AV_STEREO3D_FLAG_INVERT)
874  *h_width = 2;
875  break;
878  if (stereo->flags & AV_STEREO3D_FLAG_INVERT)
879  format--;
880  *h_height = 2;
881  break;
884  if (stereo->flags & AV_STEREO3D_FLAG_INVERT)
885  format--;
886  break;
887  case AV_STEREO3D_LINES:
889  if (stereo->flags & AV_STEREO3D_FLAG_INVERT)
890  format--;
891  *h_height = 2;
892  break;
893  case AV_STEREO3D_COLUMNS:
895  if (stereo->flags & AV_STEREO3D_FLAG_INVERT)
896  format--;
897  *h_width = 2;
898  break;
901  if (stereo->flags & AV_STEREO3D_FLAG_INVERT)
902  format++;
903  break;
904  }
905  break;
906  }
907  }
908 
909  if (format == MATROSKA_VIDEO_STEREOMODE_TYPE_NB)
910  return ret;
911 
912  // if webm, do not write unsupported modes
913  if ((mode == MODE_WEBM &&
916  || format >= MATROSKA_VIDEO_STEREOMODE_TYPE_NB) {
917  av_log(s, AV_LOG_ERROR,
918  "The specified stereo mode is not valid.\n");
920  return AVERROR(EINVAL);
921  }
922 
923  // write StereoMode if format is valid
925 
926  return ret;
927 }
928 
930  int i, AVIOContext *pb, int default_stream_exists)
931 {
932  AVStream *st = s->streams[i];
933  AVCodecParameters *par = st->codecpar;
934  ebml_master subinfo, track;
935  int native_id = 0;
936  int qt_id = 0;
938  int sample_rate = par->sample_rate;
939  int output_sample_rate = 0;
940  int display_width_div = 1;
941  int display_height_div = 1;
942  int j, ret;
944 
945  if (par->codec_type == AVMEDIA_TYPE_ATTACHMENT) {
946  mkv->have_attachments = 1;
947  return 0;
948  }
949 
950  if (par->codec_type == AVMEDIA_TYPE_AUDIO) {
951  if (!bit_depth && par->codec_id != AV_CODEC_ID_ADPCM_G726) {
952  if (par->bits_per_raw_sample)
953  bit_depth = par->bits_per_raw_sample;
954  else
955  bit_depth = av_get_bytes_per_sample(par->format) << 3;
956  }
957  if (!bit_depth)
958  bit_depth = par->bits_per_coded_sample;
959  }
960 
961  if (par->codec_id == AV_CODEC_ID_AAC) {
962  ret = get_aac_sample_rates(s, par, &sample_rate, &output_sample_rate);
963  if (ret < 0)
964  return ret;
965  }
966 
969  mkv->is_dash ? mkv->dash_track_number : i + 1);
971  mkv->is_dash ? mkv->dash_track_number : i + 1);
972  put_ebml_uint (pb, MATROSKA_ID_TRACKFLAGLACING , 0); // no lacing (yet)
973 
974  if ((tag = av_dict_get(st->metadata, "title", NULL, 0)))
976  tag = av_dict_get(st->metadata, "language", NULL, 0);
977  if (mkv->mode != MODE_WEBM || par->codec_id != AV_CODEC_ID_WEBVTT) {
978  put_ebml_string(pb, MATROSKA_ID_TRACKLANGUAGE, tag && tag->value ? tag->value:"und");
979  } else if (tag && tag->value) {
981  }
982 
983  // The default value for TRACKFLAGDEFAULT is 1, so add element
984  // if we need to clear it.
985  if (default_stream_exists && !(st->disposition & AV_DISPOSITION_DEFAULT))
987 
990 
991  if (mkv->mode == MODE_WEBM && par->codec_id == AV_CODEC_ID_WEBVTT) {
992  const char *codec_id;
994  codec_id = "D_WEBVTT/CAPTIONS";
995  native_id = MATROSKA_TRACK_TYPE_SUBTITLE;
996  } else if (st->disposition & AV_DISPOSITION_DESCRIPTIONS) {
997  codec_id = "D_WEBVTT/DESCRIPTIONS";
998  native_id = MATROSKA_TRACK_TYPE_METADATA;
999  } else if (st->disposition & AV_DISPOSITION_METADATA) {
1000  codec_id = "D_WEBVTT/METADATA";
1001  native_id = MATROSKA_TRACK_TYPE_METADATA;
1002  } else {
1003  codec_id = "D_WEBVTT/SUBTITLES";
1004  native_id = MATROSKA_TRACK_TYPE_SUBTITLE;
1005  }
1006  put_ebml_string(pb, MATROSKA_ID_CODECID, codec_id);
1007  } else {
1008  // look for a codec ID string specific to mkv to use,
1009  // if none are found, use AVI codes
1010  for (j = 0; ff_mkv_codec_tags[j].id != AV_CODEC_ID_NONE; j++) {
1011  if (ff_mkv_codec_tags[j].id == par->codec_id) {
1013  native_id = 1;
1014  break;
1015  }
1016  }
1017  if (par->codec_id == AV_CODEC_ID_RAWVIDEO && !par->codec_tag) {
1018  if (mkv->allow_raw_vfw) {
1019  native_id = 0;
1020  } else {
1021  av_log(s, AV_LOG_ERROR, "Raw RGB is not supported Natively in Matroska, you can use AVI or NUT or\n"
1022  "If you would like to store it anyway using VFW mode, enable allow_raw_vfw (-allow_raw_vfw 1)\n");
1023  return AVERROR(EINVAL);
1024  }
1025  }
1026  }
1027 
1028  if (par->codec_type == AVMEDIA_TYPE_AUDIO && par->initial_padding && par->codec_id == AV_CODEC_ID_OPUS) {
1029  int64_t codecdelay = av_rescale_q(par->initial_padding,
1030  (AVRational){ 1, 48000 },
1031  (AVRational){ 1, 1000000000 });
1032  if (codecdelay < 0) {
1033  av_log(s, AV_LOG_ERROR, "Initial padding is invalid\n");
1034  return AVERROR(EINVAL);
1035  }
1036 // mkv->tracks[i].ts_offset = av_rescale_q(par->initial_padding,
1037 // (AVRational){ 1, par->sample_rate },
1038 // st->time_base);
1039 
1040  put_ebml_uint(pb, MATROSKA_ID_CODECDELAY, codecdelay);
1041  }
1042  if (par->codec_id == AV_CODEC_ID_OPUS) {
1044  }
1045 
1046  if (mkv->mode == MODE_WEBM && !(par->codec_id == AV_CODEC_ID_VP8 ||
1047  par->codec_id == AV_CODEC_ID_VP9 ||
1048  par->codec_id == AV_CODEC_ID_OPUS ||
1049  par->codec_id == AV_CODEC_ID_VORBIS ||
1050  par->codec_id == AV_CODEC_ID_WEBVTT)) {
1052  "Only VP8 or VP9 video and Vorbis or Opus audio and WebVTT subtitles are supported for WebM.\n");
1053  return AVERROR(EINVAL);
1054  }
1055 
1056  switch (par->codec_type) {
1057  case AVMEDIA_TYPE_VIDEO:
1059 
1060  if( st->avg_frame_rate.num > 0 && st->avg_frame_rate.den > 0
1061  && av_cmp_q(av_inv_q(st->avg_frame_rate), st->time_base) > 0)
1062  put_ebml_uint(pb, MATROSKA_ID_TRACKDEFAULTDURATION, 1000000000LL * st->avg_frame_rate.den / st->avg_frame_rate.num);
1063  else
1064  put_ebml_uint(pb, MATROSKA_ID_TRACKDEFAULTDURATION, 1000000000LL * st->time_base.num / st->time_base.den);
1065 
1066  if (!native_id &&
1067  ff_codec_get_tag(ff_codec_movvideo_tags, par->codec_id) &&
1068  ((!ff_codec_get_tag(ff_codec_bmp_tags, par->codec_id) && par->codec_id != AV_CODEC_ID_RAWVIDEO) ||
1069  par->codec_id == AV_CODEC_ID_SVQ1 ||
1070  par->codec_id == AV_CODEC_ID_SVQ3 ||
1071  par->codec_id == AV_CODEC_ID_CINEPAK))
1072  qt_id = 1;
1073 
1074  if (qt_id)
1075  put_ebml_string(pb, MATROSKA_ID_CODECID, "V_QUICKTIME");
1076  else if (!native_id) {
1077  // if there is no mkv-specific codec ID, use VFW mode
1078  put_ebml_string(pb, MATROSKA_ID_CODECID, "V_MS/VFW/FOURCC");
1079  mkv->tracks[i].write_dts = 1;
1080  s->internal->avoid_negative_ts_use_pts = 0;
1081  }
1082 
1083  subinfo = start_ebml_master(pb, MATROSKA_ID_TRACKVIDEO, 0);
1084 
1085  put_ebml_uint (pb, MATROSKA_ID_VIDEOPIXELWIDTH , par->width);
1086  put_ebml_uint (pb, MATROSKA_ID_VIDEOPIXELHEIGHT, par->height);
1087 
1088  if (mkv->mode != MODE_WEBM)
1089  mkv_write_field_order(pb, par->field_order);
1090 
1091  // check both side data and metadata for stereo information,
1092  // write the result to the bitstream if any is found
1093  ret = mkv_write_stereo_mode(s, pb, st, mkv->mode,
1094  &display_width_div,
1095  &display_height_div);
1096  if (ret < 0)
1097  return ret;
1098 
1099  if (((tag = av_dict_get(st->metadata, "alpha_mode", NULL, 0)) && atoi(tag->value)) ||
1100  ((tag = av_dict_get( s->metadata, "alpha_mode", NULL, 0)) && atoi(tag->value)) ||
1101  (par->format == AV_PIX_FMT_YUVA420P)) {
1103  }
1104 
1105  // write DisplayWidth and DisplayHeight, they contain the size of
1106  // a single source view and/or the display aspect ratio
1107  if (st->sample_aspect_ratio.num) {
1108  int64_t d_width = av_rescale(par->width, st->sample_aspect_ratio.num, st->sample_aspect_ratio.den);
1109  if (d_width > INT_MAX) {
1110  av_log(s, AV_LOG_ERROR, "Overflow in display width\n");
1111  return AVERROR(EINVAL);
1112  }
1113  put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYWIDTH , d_width / display_width_div);
1114  put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYHEIGHT, par->height / display_height_div);
1115  } else if (display_width_div != 1 || display_height_div != 1) {
1116  put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYWIDTH , par->width / display_width_div);
1117  put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYHEIGHT, par->height / display_height_div);
1118  }
1119 
1120  if (par->codec_id == AV_CODEC_ID_RAWVIDEO) {
1121  uint32_t color_space = av_le2ne32(par->codec_tag);
1122  put_ebml_binary(pb, MATROSKA_ID_VIDEOCOLORSPACE, &color_space, sizeof(color_space));
1123  }
1124  if (s->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
1125  mkv_write_video_color(pb, par, st);
1126  }
1127  end_ebml_master(pb, subinfo);
1128  break;
1129 
1130  case AVMEDIA_TYPE_AUDIO:
1132 
1133  if (!native_id)
1134  // no mkv-specific ID, use ACM mode
1135  put_ebml_string(pb, MATROSKA_ID_CODECID, "A_MS/ACM");
1136 
1137  subinfo = start_ebml_master(pb, MATROSKA_ID_TRACKAUDIO, 0);
1138  put_ebml_uint (pb, MATROSKA_ID_AUDIOCHANNELS , par->channels);
1140  if (output_sample_rate)
1141  put_ebml_float(pb, MATROSKA_ID_AUDIOOUTSAMPLINGFREQ, output_sample_rate);
1142  if (bit_depth)
1144  end_ebml_master(pb, subinfo);
1145  break;
1146 
1147  case AVMEDIA_TYPE_SUBTITLE:
1148  if (!native_id) {
1149  av_log(s, AV_LOG_ERROR, "Subtitle codec %d is not supported.\n", par->codec_id);
1150  return AVERROR(ENOSYS);
1151  }
1152 
1153  if (mkv->mode != MODE_WEBM || par->codec_id != AV_CODEC_ID_WEBVTT)
1154  native_id = MATROSKA_TRACK_TYPE_SUBTITLE;
1155 
1156  put_ebml_uint(pb, MATROSKA_ID_TRACKTYPE, native_id);
1157  break;
1158  default:
1159  av_log(s, AV_LOG_ERROR, "Only audio, video, and subtitles are supported for Matroska.\n");
1160  return AVERROR(EINVAL);
1161  }
1162 
1163  if (mkv->mode != MODE_WEBM || par->codec_id != AV_CODEC_ID_WEBVTT) {
1164  ret = mkv_write_codecprivate(s, pb, par, native_id, qt_id);
1165  if (ret < 0)
1166  return ret;
1167  }
1168 
1169  end_ebml_master(pb, track);
1170 
1171  return 0;
1172 }
1173 
1175 {
1176  MatroskaMuxContext *mkv = s->priv_data;
1177  AVIOContext *pb = s->pb;
1178  ebml_master tracks;
1179  int i, ret, default_stream_exists = 0;
1180 
1182  if (ret < 0)
1183  return ret;
1184 
1185  tracks = start_ebml_master(pb, MATROSKA_ID_TRACKS, 0);
1186  for (i = 0; i < s->nb_streams; i++) {
1187  AVStream *st = s->streams[i];
1188  default_stream_exists |= st->disposition & AV_DISPOSITION_DEFAULT;
1189  }
1190  for (i = 0; i < s->nb_streams; i++) {
1191  ret = mkv_write_track(s, mkv, i, pb, default_stream_exists);
1192  if (ret < 0)
1193  return ret;
1194  }
1195  end_ebml_master(pb, tracks);
1196  return 0;
1197 }
1198 
1200 {
1201  MatroskaMuxContext *mkv = s->priv_data;
1202  AVIOContext *pb = s->pb;
1203  ebml_master chapters, editionentry;
1204  AVRational scale = {1, 1E9};
1205  int i, ret;
1206 
1207  if (!s->nb_chapters || mkv->wrote_chapters)
1208  return 0;
1209 
1211  if (ret < 0) return ret;
1212 
1213  chapters = start_ebml_master(pb, MATROSKA_ID_CHAPTERS , 0);
1214  editionentry = start_ebml_master(pb, MATROSKA_ID_EDITIONENTRY, 0);
1217  for (i = 0; i < s->nb_chapters; i++) {
1218  ebml_master chapteratom, chapterdisplay;
1219  AVChapter *c = s->chapters[i];
1220  int64_t chapterstart = av_rescale_q(c->start, c->time_base, scale);
1221  int64_t chapterend = av_rescale_q(c->end, c->time_base, scale);
1222  AVDictionaryEntry *t = NULL;
1223  if (chapterstart < 0 || chapterstart > chapterend || chapterend < 0) {
1224  av_log(s, AV_LOG_ERROR,
1225  "Invalid chapter start (%"PRId64") or end (%"PRId64").\n",
1226  chapterstart, chapterend);
1227  return AVERROR_INVALIDDATA;
1228  }
1229 
1230  chapteratom = start_ebml_master(pb, MATROSKA_ID_CHAPTERATOM, 0);
1232  put_ebml_uint(pb, MATROSKA_ID_CHAPTERTIMESTART, chapterstart);
1233  put_ebml_uint(pb, MATROSKA_ID_CHAPTERTIMEEND, chapterend);
1236  if ((t = av_dict_get(c->metadata, "title", NULL, 0))) {
1237  chapterdisplay = start_ebml_master(pb, MATROSKA_ID_CHAPTERDISPLAY, 0);
1240  end_ebml_master(pb, chapterdisplay);
1241  }
1242  end_ebml_master(pb, chapteratom);
1243  }
1244  end_ebml_master(pb, editionentry);
1245  end_ebml_master(pb, chapters);
1246 
1247  mkv->wrote_chapters = 1;
1248  return 0;
1249 }
1250 
1252 {
1253  uint8_t *key = av_strdup(t->key);
1254  uint8_t *p = key;
1255  const uint8_t *lang = NULL;
1256  ebml_master tag;
1257 
1258  if (!key)
1259  return AVERROR(ENOMEM);
1260 
1261  if ((p = strrchr(p, '-')) &&
1262  (lang = av_convert_lang_to(p + 1, AV_LANG_ISO639_2_BIBL)))
1263  *p = 0;
1264 
1265  p = key;
1266  while (*p) {
1267  if (*p == ' ')
1268  *p = '_';
1269  else if (*p >= 'a' && *p <= 'z')
1270  *p -= 'a' - 'A';
1271  p++;
1272  }
1273 
1276  if (lang)
1279  end_ebml_master(pb, tag);
1280 
1281  av_freep(&key);
1282  return 0;
1283 }
1284 
1286  unsigned int elementid, unsigned int uid,
1287  ebml_master *tags, ebml_master* tag)
1288 {
1289  MatroskaMuxContext *mkv = s->priv_data;
1290  ebml_master targets;
1291  int ret;
1292 
1293  if (!tags->pos) {
1295  if (ret < 0) return ret;
1296 
1297  *tags = start_ebml_master(s->pb, MATROSKA_ID_TAGS, 0);
1298  }
1299 
1300  *tag = start_ebml_master(s->pb, MATROSKA_ID_TAG, 0);
1301  targets = start_ebml_master(s->pb, MATROSKA_ID_TAGTARGETS, 0);
1302  if (elementid)
1303  put_ebml_uint(s->pb, elementid, uid);
1304  end_ebml_master(s->pb, targets);
1305  return 0;
1306 }
1307 
1308 static int mkv_write_tag(AVFormatContext *s, AVDictionary *m, unsigned int elementid,
1309  unsigned int uid, ebml_master *tags)
1310 {
1311  ebml_master tag;
1312  int ret;
1313  AVDictionaryEntry *t = NULL;
1314 
1315  ret = mkv_write_tag_targets(s, elementid, uid, tags, &tag);
1316  if (ret < 0)
1317  return ret;
1318 
1319  while ((t = av_dict_get(m, "", t, AV_DICT_IGNORE_SUFFIX))) {
1320  if (av_strcasecmp(t->key, "title") &&
1321  av_strcasecmp(t->key, "stereo_mode") &&
1322  av_strcasecmp(t->key, "creation_time") &&
1323  av_strcasecmp(t->key, "encoding_tool") &&
1324  (elementid != MATROSKA_ID_TAGTARGETS_TRACKUID ||
1325  av_strcasecmp(t->key, "language"))) {
1326  ret = mkv_write_simpletag(s->pb, t);
1327  if (ret < 0)
1328  return ret;
1329  }
1330  }
1331 
1332  end_ebml_master(s->pb, tag);
1333  return 0;
1334 }
1335 
1337 {
1338  AVDictionaryEntry *t = NULL;
1339 
1340  while ((t = av_dict_get(m, "", t, AV_DICT_IGNORE_SUFFIX)))
1341  if (av_strcasecmp(t->key, "title") && av_strcasecmp(t->key, "stereo_mode"))
1342  return 1;
1343 
1344  return 0;
1345 }
1346 
1348 {
1349  MatroskaMuxContext *mkv = s->priv_data;
1350  ebml_master tags = {0};
1351  int i, ret;
1352 
1354 
1355  if (mkv_check_tag(s->metadata)) {
1356  ret = mkv_write_tag(s, s->metadata, 0, 0, &tags);
1357  if (ret < 0) return ret;
1358  }
1359 
1360  for (i = 0; i < s->nb_streams; i++) {
1361  AVStream *st = s->streams[i];
1362 
1363  if (!mkv_check_tag(st->metadata))
1364  continue;
1365 
1366  ret = mkv_write_tag(s, st->metadata, MATROSKA_ID_TAGTARGETS_TRACKUID, i + 1, &tags);
1367  if (ret < 0) return ret;
1368  }
1369 
1370  if (!mkv->is_live) {
1371  for (i = 0; i < s->nb_streams; i++) {
1372  ebml_master tag_target;
1373  ebml_master tag;
1374 
1375  mkv_write_tag_targets(s, MATROSKA_ID_TAGTARGETS_TRACKUID, i + 1, &tags, &tag_target);
1376 
1378  put_ebml_string(s->pb, MATROSKA_ID_TAGNAME, "DURATION");
1379  mkv->stream_duration_offsets[i] = avio_tell(s->pb);
1380 
1381  // Reserve space to write duration as a 20-byte string.
1382  // 2 (ebml id) + 1 (data size) + 20 (data)
1383  put_ebml_void(s->pb, 23);
1384  end_ebml_master(s->pb, tag);
1385  end_ebml_master(s->pb, tag_target);
1386  }
1387  }
1388 
1389  for (i = 0; i < s->nb_chapters; i++) {
1390  AVChapter *ch = s->chapters[i];
1391 
1392  if (!mkv_check_tag(ch->metadata))
1393  continue;
1394 
1396  if (ret < 0) return ret;
1397  }
1398 
1399  if (tags.pos)
1400  end_ebml_master(s->pb, tags);
1401  return 0;
1402 }
1403 
1405 {
1406  MatroskaMuxContext *mkv = s->priv_data;
1407  AVIOContext *pb = s->pb;
1408  ebml_master attachments;
1409  AVLFG c;
1410  int i, ret;
1411 
1412  if (!mkv->have_attachments)
1413  return 0;
1414 
1416 
1418  if (ret < 0) return ret;
1419 
1420  attachments = start_ebml_master(pb, MATROSKA_ID_ATTACHMENTS, 0);
1421 
1422  for (i = 0; i < s->nb_streams; i++) {
1423  AVStream *st = s->streams[i];
1424  ebml_master attached_file;
1425  AVDictionaryEntry *t;
1426  const char *mimetype = NULL;
1427  uint64_t fileuid;
1428 
1430  continue;
1431 
1432  attached_file = start_ebml_master(pb, MATROSKA_ID_ATTACHEDFILE, 0);
1433 
1434  if (t = av_dict_get(st->metadata, "title", NULL, 0))
1436  if (!(t = av_dict_get(st->metadata, "filename", NULL, 0))) {
1437  av_log(s, AV_LOG_ERROR, "Attachment stream %d has no filename tag.\n", i);
1438  return AVERROR(EINVAL);
1439  }
1441  if (t = av_dict_get(st->metadata, "mimetype", NULL, 0))
1442  mimetype = t->value;
1443  else if (st->codecpar->codec_id != AV_CODEC_ID_NONE ) {
1444  int i;
1445  for (i = 0; ff_mkv_mime_tags[i].id != AV_CODEC_ID_NONE; i++)
1446  if (ff_mkv_mime_tags[i].id == st->codecpar->codec_id) {
1447  mimetype = ff_mkv_mime_tags[i].str;
1448  break;
1449  }
1450  for (i = 0; ff_mkv_image_mime_tags[i].id != AV_CODEC_ID_NONE; i++)
1451  if (ff_mkv_image_mime_tags[i].id == st->codecpar->codec_id) {
1452  mimetype = ff_mkv_image_mime_tags[i].str;
1453  break;
1454  }
1455  }
1456  if (!mimetype) {
1457  av_log(s, AV_LOG_ERROR, "Attachment stream %d has no mimetype tag and "
1458  "it cannot be deduced from the codec id.\n", i);
1459  return AVERROR(EINVAL);
1460  }
1461 
1462  if (s->flags & AVFMT_FLAG_BITEXACT) {
1463  struct AVSHA *sha = av_sha_alloc();
1464  uint8_t digest[20];
1465  if (!sha)
1466  return AVERROR(ENOMEM);
1467  av_sha_init(sha, 160);
1469  av_sha_final(sha, digest);
1470  av_free(sha);
1471  fileuid = AV_RL64(digest);
1472  } else {
1473  fileuid = av_lfg_get(&c);
1474  }
1475  av_log(s, AV_LOG_VERBOSE, "Using %.16"PRIx64" for attachment %d\n",
1476  fileuid, i);
1477 
1480  put_ebml_uint(pb, MATROSKA_ID_FILEUID, fileuid);
1481  end_ebml_master(pb, attached_file);
1482  }
1483  end_ebml_master(pb, attachments);
1484 
1485  return 0;
1486 }
1487 
1489 {
1490  MatroskaMuxContext *mkv = s->priv_data;
1491  AVIOContext *pb = s->pb;
1492  ebml_master ebml_header, segment_info;
1494  int ret, i, version = 2;
1495  int64_t creation_time;
1496 
1497  if (!strcmp(s->oformat->name, "webm"))
1498  mkv->mode = MODE_WEBM;
1499  else
1500  mkv->mode = MODE_MATROSKAv2;
1501 
1502  if (mkv->mode != MODE_WEBM ||
1503  av_dict_get(s->metadata, "stereo_mode", NULL, 0) ||
1504  av_dict_get(s->metadata, "alpha_mode", NULL, 0))
1505  version = 4;
1506 
1507  for (i = 0; i < s->nb_streams; i++) {
1508  if (s->streams[i]->codecpar->codec_id == AV_CODEC_ID_ATRAC3 ||
1514  av_log(s, AV_LOG_ERROR,
1515  "The Matroska muxer does not yet support muxing %s\n",
1517  return AVERROR_PATCHWELCOME;
1518  }
1519  if (s->streams[i]->codecpar->codec_id == AV_CODEC_ID_OPUS ||
1520  av_dict_get(s->streams[i]->metadata, "stereo_mode", NULL, 0) ||
1521  av_dict_get(s->streams[i]->metadata, "alpha_mode", NULL, 0))
1522  version = 4;
1523  }
1524 
1525  mkv->tracks = av_mallocz_array(s->nb_streams, sizeof(*mkv->tracks));
1526  if (!mkv->tracks) {
1527  ret = AVERROR(ENOMEM);
1528  goto fail;
1529  }
1530  ebml_header = start_ebml_master(pb, EBML_ID_HEADER, 0);
1536  put_ebml_uint (pb, EBML_ID_DOCTYPEVERSION , version);
1538  end_ebml_master(pb, ebml_header);
1539 
1541  mkv->segment_offset = avio_tell(pb);
1542 
1543  // we write 2 seek heads - one at the end of the file to point to each
1544  // cluster, and one at the beginning to point to all other level one
1545  // elements (including the seek head at the end of the file), which
1546  // isn't more than 10 elements if we only write one of each other
1547  // currently defined level 1 element
1548  mkv->main_seekhead = mkv_start_seekhead(pb, mkv->segment_offset, 10);
1549  if (!mkv->main_seekhead) {
1550  ret = AVERROR(ENOMEM);
1551  goto fail;
1552  }
1553 
1555  if (ret < 0) goto fail;
1556 
1557  segment_info = start_ebml_master(pb, MATROSKA_ID_INFO, 0);
1559  if ((tag = av_dict_get(s->metadata, "title", NULL, 0)))
1561  if (!(s->flags & AVFMT_FLAG_BITEXACT)) {
1562  uint32_t segment_uid[4];
1563  AVLFG lfg;
1564 
1566 
1567  for (i = 0; i < 4; i++)
1568  segment_uid[i] = av_lfg_get(&lfg);
1569 
1571  if ((tag = av_dict_get(s->metadata, "encoding_tool", NULL, 0)))
1573  else
1575  put_ebml_binary(pb, MATROSKA_ID_SEGMENTUID, segment_uid, 16);
1576  } else {
1577  const char *ident = "Lavf";
1580  }
1581 
1582  if (ff_parse_creation_time_metadata(s, &creation_time, 0) > 0) {
1583  // Adjust time so it's relative to 2001-01-01 and convert to nanoseconds.
1584  int64_t date_utc = (creation_time - 978307200000000LL) * 1000;
1585  uint8_t date_utc_buf[8];
1586  AV_WB64(date_utc_buf, date_utc);
1587  put_ebml_binary(pb, MATROSKA_ID_DATEUTC, date_utc_buf, 8);
1588  }
1589 
1590  // reserve space for the duration
1591  mkv->duration = 0;
1592  mkv->duration_offset = avio_tell(pb);
1593  if (!mkv->is_live) {
1594  put_ebml_void(pb, 11); // assumes double-precision float to be written
1595  }
1596  end_ebml_master(pb, segment_info);
1597 
1598  // initialize stream_duration fields
1599  mkv->stream_durations = av_mallocz(s->nb_streams * sizeof(int64_t));
1600  mkv->stream_duration_offsets = av_mallocz(s->nb_streams * sizeof(int64_t));
1601 
1602  ret = mkv_write_tracks(s);
1603  if (ret < 0)
1604  goto fail;
1605 
1606  for (i = 0; i < s->nb_chapters; i++)
1607  mkv->chapter_id_offset = FFMAX(mkv->chapter_id_offset, 1LL - s->chapters[i]->id);
1608 
1609  if (mkv->mode != MODE_WEBM) {
1610  ret = mkv_write_chapters(s);
1611  if (ret < 0)
1612  goto fail;
1613 
1614  ret = mkv_write_tags(s);
1615  if (ret < 0)
1616  goto fail;
1617 
1618  ret = mkv_write_attachments(s);
1619  if (ret < 0)
1620  goto fail;
1621  }
1622 
1623  if (!s->pb->seekable && !mkv->is_live)
1624  mkv_write_seekhead(pb, mkv);
1625 
1626  mkv->cues = mkv_start_cues(mkv->segment_offset);
1627  if (!mkv->cues) {
1628  ret = AVERROR(ENOMEM);
1629  goto fail;
1630  }
1631  if (pb->seekable && mkv->reserve_cues_space) {
1632  mkv->cues_pos = avio_tell(pb);
1634  }
1635 
1637  mkv->cur_audio_pkt.size = 0;
1638  mkv->cluster_pos = -1;
1639 
1640  avio_flush(pb);
1641 
1642  // start a new cluster every 5 MB or 5 sec, or 32k / 1 sec for streaming or
1643  // after 4k and on a keyframe
1644  if (pb->seekable) {
1645  if (mkv->cluster_time_limit < 0)
1646  mkv->cluster_time_limit = 5000;
1647  if (mkv->cluster_size_limit < 0)
1648  mkv->cluster_size_limit = 5 * 1024 * 1024;
1649  } else {
1650  if (mkv->cluster_time_limit < 0)
1651  mkv->cluster_time_limit = 1000;
1652  if (mkv->cluster_size_limit < 0)
1653  mkv->cluster_size_limit = 32 * 1024;
1654  }
1655 
1656  return 0;
1657 fail:
1658  mkv_free(mkv);
1659  return ret;
1660 }
1661 
1662 static int mkv_blockgroup_size(int pkt_size)
1663 {
1664  int size = pkt_size + 4;
1665  size += ebml_num_size(size);
1666  size += 2; // EBML ID for block and block duration
1667  size += 8; // max size of block duration
1668  size += ebml_num_size(size);
1669  size += 1; // blockgroup EBML ID
1670  return size;
1671 }
1672 
1673 static int mkv_strip_wavpack(const uint8_t *src, uint8_t **pdst, int *size)
1674 {
1675  uint8_t *dst;
1676  int srclen = *size;
1677  int offset = 0;
1678  int ret;
1679 
1680  dst = av_malloc(srclen);
1681  if (!dst)
1682  return AVERROR(ENOMEM);
1683 
1684  while (srclen >= WV_HEADER_SIZE) {
1685  WvHeader header;
1686 
1687  ret = ff_wv_parse_header(&header, src);
1688  if (ret < 0)
1689  goto fail;
1690  src += WV_HEADER_SIZE;
1691  srclen -= WV_HEADER_SIZE;
1692 
1693  if (srclen < header.blocksize) {
1694  ret = AVERROR_INVALIDDATA;
1695  goto fail;
1696  }
1697 
1698  if (header.initial) {
1699  AV_WL32(dst + offset, header.samples);
1700  offset += 4;
1701  }
1702  AV_WL32(dst + offset, header.flags);
1703  AV_WL32(dst + offset + 4, header.crc);
1704  offset += 8;
1705 
1706  if (!(header.initial && header.final)) {
1707  AV_WL32(dst + offset, header.blocksize);
1708  offset += 4;
1709  }
1710 
1711  memcpy(dst + offset, src, header.blocksize);
1712  src += header.blocksize;
1713  srclen -= header.blocksize;
1714  offset += header.blocksize;
1715  }
1716 
1717  *pdst = dst;
1718  *size = offset;
1719 
1720  return 0;
1721 fail:
1722  av_freep(&dst);
1723  return ret;
1724 }
1725 
1727  unsigned int blockid, AVPacket *pkt, int keyframe)
1728 {
1729  MatroskaMuxContext *mkv = s->priv_data;
1731  uint8_t *data = NULL, *side_data = NULL;
1732  int offset = 0, size = pkt->size, side_data_size = 0;
1733  int64_t ts = mkv->tracks[pkt->stream_index].write_dts ? pkt->dts : pkt->pts;
1734  uint64_t additional_id = 0;
1735  int64_t discard_padding = 0;
1736  uint8_t track_number = (mkv->is_dash ? mkv->dash_track_number : (pkt->stream_index + 1));
1737  ebml_master block_group, block_additions, block_more;
1738 
1739  av_log(s, AV_LOG_DEBUG, "Writing block at offset %" PRIu64 ", size %d, "
1740  "pts %" PRId64 ", dts %" PRId64 ", duration %" PRId64 ", keyframe %d\n",
1741  avio_tell(pb), pkt->size, pkt->pts, pkt->dts, pkt->duration,
1742  keyframe != 0);
1743  if (par->codec_id == AV_CODEC_ID_H264 && par->extradata_size > 0 &&
1744  (AV_RB24(par->extradata) == 1 || AV_RB32(par->extradata) == 1))
1745  ff_avc_parse_nal_units_buf(pkt->data, &data, &size);
1746  else if (par->codec_id == AV_CODEC_ID_HEVC && par->extradata_size > 6 &&
1747  (AV_RB24(par->extradata) == 1 || AV_RB32(par->extradata) == 1))
1748  /* extradata is Annex B, assume the bitstream is too and convert it */
1749  ff_hevc_annexb2mp4_buf(pkt->data, &data, &size, 0, NULL);
1750  else if (par->codec_id == AV_CODEC_ID_WAVPACK) {
1751  int ret = mkv_strip_wavpack(pkt->data, &data, &size);
1752  if (ret < 0) {
1753  av_log(s, AV_LOG_ERROR, "Error stripping a WavPack packet.\n");
1754  return;
1755  }
1756  } else
1757  data = pkt->data;
1758 
1759  if (par->codec_id == AV_CODEC_ID_PRORES && size >= 8) {
1760  /* Matroska specification requires to remove the first QuickTime atom
1761  */
1762  size -= 8;
1763  offset = 8;
1764  }
1765 
1766  side_data = av_packet_get_side_data(pkt,
1768  &side_data_size);
1769 
1770  if (side_data && side_data_size >= 10) {
1771  discard_padding = av_rescale_q(AV_RL32(side_data + 4),
1772  (AVRational){1, par->sample_rate},
1773  (AVRational){1, 1000000000});
1774  }
1775 
1776  side_data = av_packet_get_side_data(pkt,
1778  &side_data_size);
1779  if (side_data) {
1780  additional_id = AV_RB64(side_data);
1781  side_data += 8;
1782  side_data_size -= 8;
1783  }
1784 
1785  if ((side_data_size && additional_id == 1) || discard_padding) {
1786  block_group = start_ebml_master(pb, MATROSKA_ID_BLOCKGROUP, 0);
1787  blockid = MATROSKA_ID_BLOCK;
1788  }
1789 
1790  put_ebml_id(pb, blockid);
1791  put_ebml_num(pb, size + 4, 0);
1792  // this assumes stream_index is less than 126
1793  avio_w8(pb, 0x80 | track_number);
1794  avio_wb16(pb, ts - mkv->cluster_pts);
1795  avio_w8(pb, (blockid == MATROSKA_ID_SIMPLEBLOCK && keyframe) ? (1 << 7) : 0);
1796  avio_write(pb, data + offset, size);
1797  if (data != pkt->data)
1798  av_free(data);
1799 
1800  if (blockid == MATROSKA_ID_BLOCK && !keyframe) {
1802  mkv->last_track_timestamp[track_number - 1]);
1803  }
1804  mkv->last_track_timestamp[track_number - 1] = ts - mkv->cluster_pts;
1805 
1806  if (discard_padding) {
1807  put_ebml_sint(pb, MATROSKA_ID_DISCARDPADDING, discard_padding);
1808  }
1809 
1810  if (side_data_size && additional_id == 1) {
1811  block_additions = start_ebml_master(pb, MATROSKA_ID_BLOCKADDITIONS, 0);
1812  block_more = start_ebml_master(pb, MATROSKA_ID_BLOCKMORE, 0);
1815  put_ebml_num(pb, side_data_size, 0);
1816  avio_write(pb, side_data, side_data_size);
1817  end_ebml_master(pb, block_more);
1818  end_ebml_master(pb, block_additions);
1819  }
1820  if ((side_data_size && additional_id == 1) || discard_padding) {
1821  end_ebml_master(pb, block_group);
1822  }
1823 }
1824 
1826 {
1827  MatroskaMuxContext *mkv = s->priv_data;
1828  ebml_master blockgroup;
1829  int id_size, settings_size, size;
1830  uint8_t *id, *settings;
1831  int64_t ts = mkv->tracks[pkt->stream_index].write_dts ? pkt->dts : pkt->pts;
1832  const int flags = 0;
1833 
1834  id_size = 0;
1836  &id_size);
1837 
1838  settings_size = 0;
1840  &settings_size);
1841 
1842  size = id_size + 1 + settings_size + 1 + pkt->size;
1843 
1844  av_log(s, AV_LOG_DEBUG, "Writing block at offset %" PRIu64 ", size %d, "
1845  "pts %" PRId64 ", dts %" PRId64 ", duration %" PRId64 ", flags %d\n",
1846  avio_tell(pb), size, pkt->pts, pkt->dts, pkt->duration, flags);
1847 
1849 
1851  put_ebml_num(pb, size + 4, 0);
1852  avio_w8(pb, 0x80 | (pkt->stream_index + 1)); // this assumes stream_index is less than 126
1853  avio_wb16(pb, ts - mkv->cluster_pts);
1854  avio_w8(pb, flags);
1855  avio_printf(pb, "%.*s\n%.*s\n%.*s", id_size, id, settings_size, settings, pkt->size, pkt->data);
1856 
1858  end_ebml_master(pb, blockgroup);
1859 
1860  return pkt->duration;
1861 }
1862 
1864 {
1865  MatroskaMuxContext *mkv = s->priv_data;
1866  int bufsize;
1867  uint8_t *dyn_buf;
1868 
1869  if (!mkv->dyn_bc)
1870  return;
1871 
1872  bufsize = avio_close_dyn_buf(mkv->dyn_bc, &dyn_buf);
1873  avio_write(s->pb, dyn_buf, bufsize);
1874  av_free(dyn_buf);
1875  mkv->dyn_bc = NULL;
1876 }
1877 
1879 {
1880  MatroskaMuxContext *mkv = s->priv_data;
1881  AVIOContext *pb;
1882 
1883  if (s->pb->seekable) {
1884  pb = s->pb;
1885  } else {
1886  pb = mkv->dyn_bc;
1887  }
1888 
1889  av_log(s, AV_LOG_DEBUG,
1890  "Starting new cluster at offset %" PRIu64 " bytes, "
1891  "pts %" PRIu64 "dts %" PRIu64 "\n",
1892  avio_tell(pb), pkt->pts, pkt->dts);
1893  end_ebml_master(pb, mkv->cluster);
1894  mkv->cluster_pos = -1;
1895  if (mkv->dyn_bc)
1896  mkv_flush_dynbuf(s);
1897  avio_flush(s->pb);
1898 }
1899 
1901 {
1902  MatroskaMuxContext *mkv = s->priv_data;
1903  AVIOContext *pb = s->pb;
1905  int keyframe = !!(pkt->flags & AV_PKT_FLAG_KEY);
1906  int duration = pkt->duration;
1907  int ret;
1908  int64_t ts = mkv->tracks[pkt->stream_index].write_dts ? pkt->dts : pkt->pts;
1909  int64_t relative_packet_pos;
1910  int dash_tracknum = mkv->is_dash ? mkv->dash_track_number : pkt->stream_index + 1;
1911 
1912  if (ts == AV_NOPTS_VALUE) {
1913  av_log(s, AV_LOG_ERROR, "Can't write packet with unknown timestamp\n");
1914  return AVERROR(EINVAL);
1915  }
1916  ts += mkv->tracks[pkt->stream_index].ts_offset;
1917 
1918  if (mkv->cluster_pos != -1) {
1919  int64_t cluster_time = ts - mkv->cluster_pts + mkv->tracks[pkt->stream_index].ts_offset;
1920  if ((int16_t)cluster_time != cluster_time) {
1921  av_log(s, AV_LOG_WARNING, "Starting new cluster due to timestamp\n");
1922  mkv_start_new_cluster(s, pkt);
1923  }
1924  }
1925 
1926  if (!s->pb->seekable) {
1927  if (!mkv->dyn_bc) {
1928  ret = avio_open_dyn_buf(&mkv->dyn_bc);
1929  if (ret < 0) {
1930  av_log(s, AV_LOG_ERROR, "Failed to open dynamic buffer\n");
1931  return ret;
1932  }
1933  }
1934  pb = mkv->dyn_bc;
1935  }
1936 
1937  if (mkv->cluster_pos == -1) {
1938  mkv->cluster_pos = avio_tell(s->pb);
1941  mkv->cluster_pts = FFMAX(0, ts);
1942  }
1943 
1944  relative_packet_pos = avio_tell(s->pb) - mkv->cluster.pos;
1945 
1946  if (par->codec_type != AVMEDIA_TYPE_SUBTITLE) {
1947  mkv_write_block(s, pb, MATROSKA_ID_SIMPLEBLOCK, pkt, keyframe);
1948  if (s->pb->seekable && (par->codec_type == AVMEDIA_TYPE_VIDEO && keyframe || add_cue)) {
1949  ret = mkv_add_cuepoint(mkv->cues, pkt->stream_index, dash_tracknum, ts, mkv->cluster_pos, relative_packet_pos, -1);
1950  if (ret < 0) return ret;
1951  }
1952  } else {
1953  if (par->codec_id == AV_CODEC_ID_WEBVTT) {
1954  duration = mkv_write_vtt_blocks(s, pb, pkt);
1955  } else {
1957  mkv_blockgroup_size(pkt->size));
1958 
1959 #if FF_API_CONVERGENCE_DURATION
1961  /* For backward compatibility, prefer convergence_duration. */
1962  if (pkt->convergence_duration > 0) {
1963  duration = pkt->convergence_duration;
1964  }
1966 #endif
1967  /* All subtitle blocks are considered to be keyframes. */
1968  mkv_write_block(s, pb, MATROSKA_ID_BLOCK, pkt, 1);
1970  end_ebml_master(pb, blockgroup);
1971  }
1972 
1973  if (s->pb->seekable) {
1974  ret = mkv_add_cuepoint(mkv->cues, pkt->stream_index, dash_tracknum, ts,
1975  mkv->cluster_pos, relative_packet_pos, duration);
1976  if (ret < 0)
1977  return ret;
1978  }
1979  }
1980 
1981  mkv->duration = FFMAX(mkv->duration, ts + duration);
1982 
1983  if (mkv->stream_durations)
1984  mkv->stream_durations[pkt->stream_index] =
1985  FFMAX(mkv->stream_durations[pkt->stream_index], ts + duration);
1986 
1987  return 0;
1988 }
1989 
1991 {
1992  MatroskaMuxContext *mkv = s->priv_data;
1994  int keyframe = !!(pkt->flags & AV_PKT_FLAG_KEY);
1995  int cluster_size;
1996  int64_t cluster_time;
1997  int ret;
1998  int start_new_cluster;
1999 
2000  if (mkv->tracks[pkt->stream_index].write_dts)
2001  cluster_time = pkt->dts - mkv->cluster_pts;
2002  else
2003  cluster_time = pkt->pts - mkv->cluster_pts;
2004  cluster_time += mkv->tracks[pkt->stream_index].ts_offset;
2005 
2006  // start a new cluster every 5 MB or 5 sec, or 32k / 1 sec for streaming or
2007  // after 4k and on a keyframe
2008  if (s->pb->seekable) {
2009  cluster_size = avio_tell(s->pb) - mkv->cluster_pos;
2010  } else {
2011  cluster_size = avio_tell(mkv->dyn_bc);
2012  }
2013 
2014  if (mkv->is_dash && codec_type == AVMEDIA_TYPE_VIDEO) {
2015  // WebM DASH specification states that the first block of every cluster
2016  // has to be a key frame. So for DASH video, we only create a cluster
2017  // on seeing key frames.
2018  start_new_cluster = keyframe;
2019  } else if (mkv->is_dash && codec_type == AVMEDIA_TYPE_AUDIO &&
2020  (mkv->cluster_pos == -1 ||
2021  cluster_time > mkv->cluster_time_limit)) {
2022  // For DASH audio, we create a Cluster based on cluster_time_limit
2023  start_new_cluster = 1;
2024  } else if (!mkv->is_dash &&
2025  (cluster_size > mkv->cluster_size_limit ||
2026  cluster_time > mkv->cluster_time_limit ||
2027  (codec_type == AVMEDIA_TYPE_VIDEO && keyframe &&
2028  cluster_size > 4 * 1024))) {
2029  start_new_cluster = 1;
2030  } else {
2031  start_new_cluster = 0;
2032  }
2033 
2034  if (mkv->cluster_pos != -1 && start_new_cluster) {
2035  mkv_start_new_cluster(s, pkt);
2036  }
2037 
2038  // check if we have an audio packet cached
2039  if (mkv->cur_audio_pkt.size > 0) {
2040  // for DASH audio, a CuePoint has to be added when there is a new cluster.
2042  mkv->is_dash ? start_new_cluster : 0);
2044  if (ret < 0) {
2045  av_log(s, AV_LOG_ERROR,
2046  "Could not write cached audio packet ret:%d\n", ret);
2047  return ret;
2048  }
2049  }
2050 
2051  // buffer an audio packet to ensure the packet containing the video
2052  // keyframe's timecode is contained in the same cluster for WebM
2053  if (codec_type == AVMEDIA_TYPE_AUDIO) {
2054  ret = av_packet_ref(&mkv->cur_audio_pkt, pkt);
2055  } else
2056  ret = mkv_write_packet_internal(s, pkt, 0);
2057  return ret;
2058 }
2059 
2061 {
2062  MatroskaMuxContext *mkv = s->priv_data;
2063  AVIOContext *pb;
2064  if (s->pb->seekable)
2065  pb = s->pb;
2066  else
2067  pb = mkv->dyn_bc;
2068  if (!pkt) {
2069  if (mkv->cluster_pos != -1) {
2070  av_log(s, AV_LOG_DEBUG,
2071  "Flushing cluster at offset %" PRIu64 " bytes\n",
2072  avio_tell(pb));
2073  end_ebml_master(pb, mkv->cluster);
2074  mkv->cluster_pos = -1;
2075  if (mkv->dyn_bc)
2076  mkv_flush_dynbuf(s);
2077  avio_flush(s->pb);
2078  }
2079  return 1;
2080  }
2081  return mkv_write_packet(s, pkt);
2082 }
2083 
2085 {
2086  MatroskaMuxContext *mkv = s->priv_data;
2087  AVIOContext *pb = s->pb;
2088  int64_t currentpos, cuespos;
2089  int ret;
2090 
2091  // check if we have an audio packet cached
2092  if (mkv->cur_audio_pkt.size > 0) {
2093  ret = mkv_write_packet_internal(s, &mkv->cur_audio_pkt, 0);
2095  if (ret < 0) {
2096  av_log(s, AV_LOG_ERROR,
2097  "Could not write cached audio packet ret:%d\n", ret);
2098  return ret;
2099  }
2100  }
2101 
2102  if (mkv->dyn_bc) {
2103  end_ebml_master(mkv->dyn_bc, mkv->cluster);
2104  mkv_flush_dynbuf(s);
2105  } else if (mkv->cluster_pos != -1) {
2106  end_ebml_master(pb, mkv->cluster);
2107  }
2108 
2109  if (mkv->mode != MODE_WEBM) {
2110  ret = mkv_write_chapters(s);
2111  if (ret < 0)
2112  return ret;
2113  }
2114 
2115  if (pb->seekable) {
2116  if (mkv->cues->num_entries) {
2117  if (mkv->reserve_cues_space) {
2118  int64_t cues_end;
2119 
2120  currentpos = avio_tell(pb);
2121  avio_seek(pb, mkv->cues_pos, SEEK_SET);
2122 
2123  cuespos = mkv_write_cues(s, mkv->cues, mkv->tracks, s->nb_streams);
2124  cues_end = avio_tell(pb);
2125  if (cues_end > cuespos + mkv->reserve_cues_space) {
2126  av_log(s, AV_LOG_ERROR,
2127  "Insufficient space reserved for cues: %d "
2128  "(needed: %" PRId64 ").\n",
2129  mkv->reserve_cues_space, cues_end - cuespos);
2130  return AVERROR(EINVAL);
2131  }
2132 
2133  if (cues_end < cuespos + mkv->reserve_cues_space)
2135  (cues_end - cuespos));
2136 
2137  avio_seek(pb, currentpos, SEEK_SET);
2138  } else {
2139  cuespos = mkv_write_cues(s, mkv->cues, mkv->tracks, s->nb_streams);
2140  }
2141 
2143  cuespos);
2144  if (ret < 0)
2145  return ret;
2146  }
2147 
2148  mkv_write_seekhead(pb, mkv);
2149 
2150  // update the duration
2151  av_log(s, AV_LOG_DEBUG, "end duration = %" PRIu64 "\n", mkv->duration);
2152  currentpos = avio_tell(pb);
2153  avio_seek(pb, mkv->duration_offset, SEEK_SET);
2155 
2156  // update stream durations
2157  if (mkv->stream_durations) {
2158  int i;
2159  for (i = 0; i < s->nb_streams; ++i) {
2160  AVStream *st = s->streams[i];
2161  double duration_sec = mkv->stream_durations[i] * av_q2d(st->time_base);
2162  char duration_string[20] = "";
2163 
2164  av_log(s, AV_LOG_DEBUG, "stream %d end duration = %" PRIu64 "\n", i,
2165  mkv->stream_durations[i]);
2166 
2167  if (!mkv->is_live && mkv->stream_duration_offsets[i] > 0) {
2168  avio_seek(pb, mkv->stream_duration_offsets[i], SEEK_SET);
2169 
2170  snprintf(duration_string, 20, "%02d:%02d:%012.9f",
2171  (int) duration_sec / 3600, ((int) duration_sec / 60) % 60,
2172  fmod(duration_sec, 60));
2173 
2174  put_ebml_binary(pb, MATROSKA_ID_TAGSTRING, duration_string, 20);
2175  }
2176  }
2177  }
2178 
2179  avio_seek(pb, currentpos, SEEK_SET);
2180  }
2181 
2182  if (!mkv->is_live) {
2183  end_ebml_master(pb, mkv->segment);
2184  }
2185 
2186  mkv_free(mkv);
2187  return 0;
2188 }
2189 
2190 static int mkv_query_codec(enum AVCodecID codec_id, int std_compliance)
2191 {
2192  int i;
2193  for (i = 0; ff_mkv_codec_tags[i].id != AV_CODEC_ID_NONE; i++)
2194  if (ff_mkv_codec_tags[i].id == codec_id)
2195  return 1;
2196 
2197  if (std_compliance < FF_COMPLIANCE_NORMAL) {
2198  enum AVMediaType type = avcodec_get_type(codec_id);
2199  // mkv theoretically supports any video/audio through VFW/ACM
2200  if (type == AVMEDIA_TYPE_VIDEO || type == AVMEDIA_TYPE_AUDIO)
2201  return 1;
2202  }
2203 
2204  return 0;
2205 }
2206 
2207 static int mkv_init(struct AVFormatContext *s)
2208 {
2209  int i;
2210 
2211  if (s->avoid_negative_ts < 0) {
2212  s->avoid_negative_ts = 1;
2214  }
2215 
2216  for (i = 0; i < s->nb_streams; i++) {
2217  // ms precision is the de-facto standard timescale for mkv files
2218  avpriv_set_pts_info(s->streams[i], 64, 1, 1000);
2219  }
2220 
2221  return 0;
2222 }
2223 
2224 static int mkv_check_bitstream(struct AVFormatContext *s, const AVPacket *pkt)
2225 {
2226  int ret = 1;
2227  AVStream *st = s->streams[pkt->stream_index];
2228 
2229  if (st->codecpar->codec_id == AV_CODEC_ID_AAC) {
2230  if (pkt->size > 2 && (AV_RB16(pkt->data) & 0xfff0) == 0xfff0)
2231  ret = ff_stream_add_bitstream_filter(st, "aac_adtstoasc", NULL);
2232  } else if (st->codecpar->codec_id == AV_CODEC_ID_VP9) {
2233  ret = ff_stream_add_bitstream_filter(st, "vp9_superframe", NULL);
2234  }
2235 
2236  return ret;
2237 }
2238 
2240  { AV_CODEC_ID_ALAC, 0XFFFFFFFF },
2241  { AV_CODEC_ID_EAC3, 0XFFFFFFFF },
2242  { AV_CODEC_ID_MLP, 0xFFFFFFFF },
2243  { AV_CODEC_ID_OPUS, 0xFFFFFFFF },
2244  { AV_CODEC_ID_PCM_S16BE, 0xFFFFFFFF },
2245  { AV_CODEC_ID_PCM_S24BE, 0xFFFFFFFF },
2246  { AV_CODEC_ID_PCM_S32BE, 0xFFFFFFFF },
2247  { AV_CODEC_ID_QDM2, 0xFFFFFFFF },
2248  { AV_CODEC_ID_RA_144, 0xFFFFFFFF },
2249  { AV_CODEC_ID_RA_288, 0xFFFFFFFF },
2250  { AV_CODEC_ID_COOK, 0xFFFFFFFF },
2251  { AV_CODEC_ID_TRUEHD, 0xFFFFFFFF },
2252  { AV_CODEC_ID_NONE, 0xFFFFFFFF }
2253 };
2254 
2256  { AV_CODEC_ID_RV10, 0xFFFFFFFF },
2257  { AV_CODEC_ID_RV20, 0xFFFFFFFF },
2258  { AV_CODEC_ID_RV30, 0xFFFFFFFF },
2259  { AV_CODEC_ID_RV40, 0xFFFFFFFF },
2260  { AV_CODEC_ID_VP9, 0xFFFFFFFF },
2261  { AV_CODEC_ID_NONE, 0xFFFFFFFF }
2262 };
2263 
2265  { AV_CODEC_ID_DVB_SUBTITLE, 0xFFFFFFFF },
2266  { AV_CODEC_ID_HDMV_PGS_SUBTITLE, 0xFFFFFFFF },
2267  { AV_CODEC_ID_NONE, 0xFFFFFFFF }
2268 };
2269 
2270 #define OFFSET(x) offsetof(MatroskaMuxContext, x)
2271 #define FLAGS AV_OPT_FLAG_ENCODING_PARAM
2272 static const AVOption options[] = {
2273  { "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 },
2274  { "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 },
2275  { "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 },
2276  { "dash", "Create a WebM file conforming to WebM DASH specification", OFFSET(is_dash), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS },
2277  { "dash_track_number", "Track number for the DASH stream", OFFSET(dash_track_number), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 127, FLAGS },
2278  { "live", "Write files assuming it is a live stream.", OFFSET(is_live), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS },
2279  { "allow_raw_vfw", "allow RAW VFW mode", OFFSET(allow_raw_vfw), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS },
2280  { NULL },
2281 };
2282 
2283 #if CONFIG_MATROSKA_MUXER
2284 static const AVClass matroska_class = {
2285  .class_name = "matroska muxer",
2286  .item_name = av_default_item_name,
2287  .option = options,
2288  .version = LIBAVUTIL_VERSION_INT,
2289 };
2290 
2291 AVOutputFormat ff_matroska_muxer = {
2292  .name = "matroska",
2293  .long_name = NULL_IF_CONFIG_SMALL("Matroska"),
2294  .mime_type = "video/x-matroska",
2295  .extensions = "mkv",
2296  .priv_data_size = sizeof(MatroskaMuxContext),
2297  .audio_codec = CONFIG_LIBVORBIS_ENCODER ?
2299  .video_codec = CONFIG_LIBX264_ENCODER ?
2301  .init = mkv_init,
2307  .codec_tag = (const AVCodecTag* const []){
2310  },
2311  .subtitle_codec = AV_CODEC_ID_ASS,
2312  .query_codec = mkv_query_codec,
2313  .check_bitstream = mkv_check_bitstream,
2314  .priv_class = &matroska_class,
2315 };
2316 #endif
2317 
2318 #if CONFIG_WEBM_MUXER
2319 static const AVClass webm_class = {
2320  .class_name = "webm muxer",
2321  .item_name = av_default_item_name,
2322  .option = options,
2323  .version = LIBAVUTIL_VERSION_INT,
2324 };
2325 
2326 AVOutputFormat ff_webm_muxer = {
2327  .name = "webm",
2328  .long_name = NULL_IF_CONFIG_SMALL("WebM"),
2329  .mime_type = "video/webm",
2330  .extensions = "webm",
2331  .priv_data_size = sizeof(MatroskaMuxContext),
2332  .audio_codec = CONFIG_LIBOPUS_ENCODER ? AV_CODEC_ID_OPUS : AV_CODEC_ID_VORBIS,
2333  .video_codec = CONFIG_LIBVPX_VP9_ENCODER? AV_CODEC_ID_VP9 : AV_CODEC_ID_VP8,
2334  .subtitle_codec = AV_CODEC_ID_WEBVTT,
2335  .init = mkv_init,
2339  .check_bitstream = mkv_check_bitstream,
2342  .priv_class = &webm_class,
2343 };
2344 #endif
2345 
2346 #if CONFIG_MATROSKA_AUDIO_MUXER
2347 static const AVClass mka_class = {
2348  .class_name = "matroska audio muxer",
2349  .item_name = av_default_item_name,
2350  .option = options,
2351  .version = LIBAVUTIL_VERSION_INT,
2352 };
2353 AVOutputFormat ff_matroska_audio_muxer = {
2354  .name = "matroska",
2355  .long_name = NULL_IF_CONFIG_SMALL("Matroska Audio"),
2356  .mime_type = "audio/x-matroska",
2357  .extensions = "mka",
2358  .priv_data_size = sizeof(MatroskaMuxContext),
2359  .audio_codec = CONFIG_LIBVORBIS_ENCODER ?
2360  AV_CODEC_ID_VORBIS : AV_CODEC_ID_AC3,
2361  .video_codec = AV_CODEC_ID_NONE,
2362  .init = mkv_init,
2366  .check_bitstream = mkv_check_bitstream,
2369  .codec_tag = (const AVCodecTag* const []){
2371  },
2372  .priv_class = &mka_class,
2373 };
2374 #endif
unsigned int nb_chapters
Number of chapters in AVChapter array.
Definition: avformat.h:1522
static int mkv_write_packet_internal(AVFormatContext *s, AVPacket *pkt, int add_cue)
Definition: matroskaenc.c:1900
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:860
void avio_wb64(AVIOContext *s, uint64_t val)
Definition: aviobuf.c:423
#define NULL
Definition: coverity.c:32
static int mkv_write_vtt_blocks(AVFormatContext *s, AVIOContext *pb, AVPacket *pkt)
Definition: matroskaenc.c:1825
const char const char void * val
Definition: avisynth_c.h:634
#define MATROSKA_ID_BLOCKADDID
Definition: matroska.h:223
#define MATROSKA_ID_TRACKDEFAULTDURATION
Definition: matroska.h:104
void avio_wl16(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:429
static void put_ebml_size_unknown(AVIOContext *pb, int bytes)
Write an EBML size meaning "unknown size".
Definition: matroskaenc.c:174
const char * s
Definition: avisynth_c.h:631
Bytestream IO Context.
Definition: avio.h:111
enum AVColorTransferCharacteristic color_trc
Definition: avcodec.h:4003
#define MATROSKA_ID_VIDEOFLAGINTERLACED
Definition: matroska.h:121
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
#define MATROSKA_ID_VIDEOCOLOR_GX
Definition: matroska.h:147
enum AVCodecID codec_id
Definition: ffmpeg_vaapi.c:149
static int mkv_check_tag(AVDictionary *m)
Definition: matroskaenc.c:1336
void ff_metadata_conv_ctx(AVFormatContext *ctx, const AVMetadataConv *d_conv, const AVMetadataConv *s_conv)
Definition: metadata.c:59
#define MATROSKA_ID_DATEUTC
Definition: matroska.h:71
int sizebytes
how many bytes were reserved for the size
Definition: matroskaenc.c:59
#define MAX_TRACKS
Maximum number of tracks allowed in a Matroska file (with track numbers in range 1 to 126 (inclusive)...
Definition: matroskaenc.c:102
The optional first identifier line of a WebVTT cue.
Definition: avcodec.h:1489
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:1878
int avio_close_dyn_buf(AVIOContext *s, uint8_t **pbuffer)
Return the written size and a pointer to the buffer.
Definition: aviobuf.c:1224
AVOption.
Definition: opt.h:245
hash context
Definition: sha.c:34
int64_t cluster_pos
file offset of the cluster containing the block
Definition: matroskaenc.c:80
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:101
int ff_put_wav_header(AVFormatContext *s, AVIOContext *pb, AVCodecParameters *par, int flags)
Write WAVEFORMAT header structure.
Definition: riffenc.c:54
static int mkv_init(struct AVFormatContext *s)
Definition: matroskaenc.c:2207
enum AVCodecID id
Definition: mxfenc.c:104
#define MATROSKA_ID_CUETRACKPOSITION
Definition: matroska.h:185
enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
Definition: utils.c:2944
#define MATROSKA_ID_CODECPRIVATE
Definition: matroska.h:89
av_cold int av_sha_init(AVSHA *ctx, int bits)
Initialize SHA-1 or SHA-2 hashing.
Definition: sha.c:273
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
#define LIBAVUTIL_VERSION_INT
Definition: version.h:70
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:4404
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
#define MATROSKA_ID_AUDIOBITDEPTH
Definition: matroska.h:160
#define MATROSKA_ID_TRACKFLAGDEFAULT
Definition: matroska.h:99
static const AVCodecTag additional_subtitle_tags[]
Definition: matroskaenc.c:2264
This side data should be associated with a video stream and contains Stereoscopic 3D information in f...
Definition: avcodec.h:1407
static int mkv_write_attachments(AVFormatContext *s)
Definition: matroskaenc.c:1404
uint64_t pts
Definition: matroskaenc.c:77
static int mkv_write_video_color(AVIOContext *pb, AVCodecParameters *par, AVStream *st)
Definition: matroskaenc.c:734
AVRational white_point[2]
CIE 1931 xy chromaticity coords of white point.
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: avcodec.h:3915
int size
Definition: avcodec.h:1578
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
Definition: aviobuf.c:213
#define MATROSKA_ID_FILEDATA
Definition: matroska.h:239
AVFormatInternal * internal
An opaque field for libavformat internal usage.
Definition: avformat.h:1746
#define EBML_ID_DOCTYPEREADVERSION
Definition: matroska.h:42
#define MATROSKA_ID_BLOCKREFERENCE
Definition: matroska.h:230
int av_log2(unsigned v)
Definition: intmath.c:26
static int mkv_write_header(AVFormatContext *s)
Definition: matroskaenc.c:1488
#define MATROSKA_ID_TRACKTYPE
Definition: matroska.h:80
enum AVMediaType codec_type
Definition: rtp.c:37
#define MATROSKA_ID_TAGTARGETS_CHAPTERUID
Definition: matroska.h:206
int ff_flac_is_native_layout(uint64_t channel_layout)
uint8_t * av_stream_get_side_data(AVStream *stream, enum AVPacketSideDataType type, int *size)
Get side information from stream.
Definition: utils.c:4916
int64_t duration
duration of the block according to time base
Definition: matroskaenc.c:82
static av_always_inline uint64_t av_double2int(double f)
Reinterpret a double as a 64-bit integer.
Definition: intfloat.h:70
static int av_cmp_q(AVRational a, AVRational b)
Compare two rationals.
Definition: rational.h:66
#define MATROSKA_ID_VIDEOCOLOR_RX
Definition: matroska.h:145
#define MATROSKA_ID_MUXINGAPP
Definition: matroska.h:70
int64_t cluster_time_limit
Definition: matroskaenc.c:126
#define MATROSKA_ID_AUDIOCHANNELS
Definition: matroska.h:161
int has_primaries
Flag indicating whether the display primaries (and white point) are set.
unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum AVCodecID id)
Definition: utils.c:2934
int64_t segment_offset
Definition: matroskaenc.c:86
int version
Definition: avisynth_c.h:629
uint64_t_TMPL AV_RL64
Definition: bytestream.h:87
int avoid_negative_ts_use_pts
Definition: internal.h:121
const char * master
Definition: vf_curves.c:110
AVPacketSideData * side_data
An array of side data that applies to the whole stream (i.e.
Definition: avformat.h:983
static AVPacket pkt
#define av_le2ne32(x)
Definition: bswap.h:96
#define MATROSKA_ID_CUECLUSTERPOSITION
Definition: matroska.h:189
#define MATROSKA_ID_VIDEOCOLOR_LUMINANCEMAX
Definition: matroska.h:153
Definition: matroskaenc.c:62
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_WB32 unsigned int_TMPL AV_WB24 unsigned int_TMPL AV_RB16
Definition: bytestream.h:87
AVDictionary * metadata
Definition: avformat.h:1286
mkv_track * tracks
Definition: matroskaenc.c:117
#define AVFMT_ALLOW_FLUSH
Format allows flushing.
Definition: avformat.h:493
Views are next to each other.
Definition: stereo3d.h:45
#define MATROSKA_ID_EDITIONFLAGDEFAULT
Definition: matroska.h:253
#define MATROSKA_ID_CLUSTERTIMECODE
Definition: matroska.h:217
int avio_open_dyn_buf(AVIOContext **s)
Open a write only memory stream.
Definition: aviobuf.c:1212
#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:494
This struct describes the properties of an encoded stream.
Definition: avcodec.h:3907
#define MATROSKA_ID_CHAPTERTIMEEND
Definition: matroska.h:246
enum AVColorSpace color_space
Definition: avcodec.h:4004
int64_t pos
absolute offset in the file where the master's elements start
Definition: matroskaenc.c:58
MatroskaVideoStereoModeType
Definition: matroska.h:293
Mastering display metadata (based on SMPTE-2086:2014).
Definition: avcodec.h:1515
int ff_vorbiscomment_write(uint8_t **p, AVDictionary **m, const char *vendor_string)
Write a VorbisComment into a buffer.
Definition: vorbiscomment.c:54
#define FLAGS
Definition: matroskaenc.c:2271
#define MATROSKA_ID_FILEDESC
Definition: matroska.h:236
Format I/O context.
Definition: avformat.h:1319
UID uid
Definition: mxfenc.c:1820
char str[32]
Definition: internal.h:50
int64_t cluster_pos
file offset of the current cluster
Definition: matroskaenc.c:111
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
Definition: log.h:72
#define AV_WB64(p, v)
Definition: intreadwrite.h:433
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
static const AVCodecTag additional_audio_tags[]
Definition: matroskaenc.c:2239
Public dictionary API.
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:102
void avio_wl32(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:329
uint8_t
#define MATROSKA_ID_VIDEOCOLOR_BX
Definition: matroska.h:149
#define MATROSKA_ID_CHAPLANG
Definition: matroska.h:249
#define av_malloc(s)
static int mkv_write_tag(AVFormatContext *s, AVDictionary *m, unsigned int elementid, unsigned int uid, ebml_master *tags)
Definition: matroskaenc.c:1308
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:71
static int ebml_id_size(unsigned int id)
Definition: matroskaenc.c:157
#define OPUS_SEEK_PREROLL
Seek preroll value for opus.
Definition: matroskaenc.c:155
uint32_t flags
Definition: wv.h:40
int ff_mkv_stereo3d_conv(AVStream *st, MatroskaVideoStereoModeType stereo_mode)
Definition: matroska.c:151
uint64_t segmentpos
Definition: matroskaenc.c:64
int id
unique ID to identify the chapter
Definition: avformat.h:1283
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
Definition: avcodec.h:1595
#define MATROSKA_ID_TIMECODESCALE
Definition: matroska.h:66
static int mkv_write_codecprivate(AVFormatContext *s, AVIOContext *pb, AVCodecParameters *par, int native_id, int qt_id)
Definition: matroskaenc.c:665
#define MATROSKA_ID_SIMPLEBLOCK
Definition: matroska.h:225
#define MATROSKA_ID_EDITIONFLAGHIDDEN
Definition: matroska.h:252
int nb_side_data
The number of elements in the AVStream.side_data array.
Definition: avformat.h:987
#define MATROSKA_ID_BLOCKMORE
Definition: matroska.h:222
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_RB32
Definition: bytestream.h:87
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1387
#define MATROSKA_ID_CUERELATIVEPOSITION
Definition: matroska.h:190
#define MATROSKA_ID_AUDIOOUTSAMPLINGFREQ
Definition: matroska.h:158
#define MATROSKA_ID_VIDEOCOLOR
Definition: matroska.h:127
int initial_padding
Audio only.
Definition: avcodec.h:4044
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:1430
uint8_t * data
Definition: avcodec.h:1577
static int64_t mkv_write_cues(AVFormatContext *s, mkv_cues *cues, mkv_track *tracks, int num_tracks)
Definition: matroskaenc.c:467
#define MATROSKA_ID_VIDEODISPLAYWIDTH
Definition: matroska.h:112
#define MATROSKA_ID_BLOCKADDITIONS
Definition: matroska.h:221
uint32_t tag
Definition: movenc.c:1353
Not part of ABI.
Definition: pixfmt.h:453
#define WV_HEADER_SIZE
Definition: wavpack.h:30
enum AVCodecID id
Definition: internal.h:51
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:192
uint8_t * data
Definition: avcodec.h:1521
#define MATROSKA_ID_CUES
Definition: matroska.h:58
int64_t ts_offset
Definition: matroskaenc.c:94
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:447
int has_luminance
Flag indicating whether the luminance (min_ and max_) have been set.
static const uint8_t header[24]
Definition: sdr2.c:67
#define MATROSKA_ID_TRACKNUMBER
Definition: matroska.h:78
#define MATROSKA_ID_VIDEOCOLOR_WHITEY
Definition: matroska.h:152
void avio_write(AVIOContext *s, const unsigned char *buf, int size)
Definition: aviobuf.c:187
Definition: wv.h:34
#define AVFMT_FLAG_BITEXACT
When muxing, try to avoid writing any random/volatile data to the output.
Definition: avformat.h:1447
Views are alternated temporally.
Definition: stereo3d.h:66
#define MATROSKA_ID_SEGMENTUID
Definition: matroska.h:72
uint64_t channel_layout
Audio only.
Definition: avcodec.h:4017
static void put_ebml_num(AVIOContext *pb, uint64_t num, int bytes)
Write a number in EBML variable length format.
Definition: matroskaenc.c:198
#define av_log(a,...)
int has_cue
Definition: matroskaenc.c:93
#define AV_DISPOSITION_CAPTIONS
To specify text track kind (different from subtitles default).
Definition: avformat.h:858
unsigned m
Definition: audioconvert.c:187
static int mkv_add_seekhead_entry(mkv_seekhead *seekhead, unsigned int elementid, uint64_t filepos)
Definition: matroskaenc.c:361
int64_t segment_offset
the file offset to the beginning of the segment
Definition: matroskaenc.c:69
struct AVOutputFormat * oformat
The output container format.
Definition: avformat.h:1338
int av_packet_ref(AVPacket *dst, const AVPacket *src)
Setup a new reference to the data described by a given packet.
Definition: avpacket.c:558
#define FF_COMPLIANCE_UNOFFICIAL
Allow unofficial extensions.
Definition: avcodec.h:2863
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: avcodec.h:1609
static int get_aac_sample_rates(AVFormatContext *s, AVCodecParameters *par, int *sample_rate, int *output_sample_rate)
Definition: matroskaenc.c:608
#define MATROSKA_ID_TRACKUID
Definition: matroska.h:79
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq)
Rescale a 64-bit integer by 2 rational numbers.
Definition: mathematics.c:142
ebml_master segment
Definition: matroskaenc.c:108
static int mkv_write_simpletag(AVIOContext *pb, AVDictionaryEntry *t)
Definition: matroskaenc.c:1251
#define MATROSKA_ID_VIDEOSTEREOMODE
Definition: matroska.h:123
uint32_t chapter_id_offset
Definition: matroskaenc.c:131
int ff_parse_creation_time_metadata(AVFormatContext *s, int64_t *timestamp, int return_seconds)
Parse creation_time in AVFormatContext metadata if exists and warn if the parsing fails...
Definition: utils.c:5051
AVPacket cur_audio_pkt
Definition: matroskaenc.c:119
AVCodecID
Identify the syntax and semantics of the bitstream.
Definition: avcodec.h:189
static int mkv_write_tags(AVFormatContext *s)
Definition: matroskaenc.c:1347
#define MATROSKA_ID_VIDEOCOLOR_BY
Definition: matroska.h:150
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
int av_get_bits_per_sample(enum AVCodecID codec_id)
Return codec bits per sample.
Definition: utils.c:3439
AVDictionary * metadata
Metadata that applies to the whole file.
Definition: avformat.h:1533
int flags
Additional information about the frame packing.
Definition: stereo3d.h:132
#define MATROSKA_ID_BLOCKDURATION
Definition: matroska.h:229
#define EBML_ID_EBMLREADVERSION
Definition: matroska.h:37
#define MAX_CUETRACKPOS_SIZE
per-cuepoint-track - 5 1-byte EBML IDs, 5 1-byte EBML sizes, 4 8-byte uint max
Definition: matroskaenc.c:149
#define MATROSKA_ID_VIDEOCOLOR_WHITEX
Definition: matroska.h:151
av_default_item_name
#define AVERROR(e)
Definition: error.h:43
unsigned int elementid
Definition: matroskaenc.c:63
int reserved_size
-1 if appending to file
Definition: matroskaenc.c:70
#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
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:176
enum AVColorPrimaries color_primaries
Definition: avcodec.h:4002
#define MATROSKA_ID_FILEMIMETYPE
Definition: matroska.h:238
#define MATROSKA_ID_WRITINGAPP
Definition: matroska.h:69
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
Not part of ABI.
Definition: pixfmt.h:398
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:202
static int mkv_blockgroup_size(int pkt_size)
Definition: matroskaenc.c:1662
enum AVMediaType codec_type
General type of the encoded data.
Definition: avcodec.h:3911
static int ebml_num_size(uint64_t num)
Calculate how many bytes are needed to represent a given number in EBML.
Definition: matroskaenc.c:184
int write_dts
Definition: matroskaenc.c:92
int final
Definition: wv.h:43
AVChapter ** chapters
Definition: avformat.h:1523
enum AVCodecID id
Definition: matroska.h:318
enum AVPacketSideDataType type
Definition: avcodec.h:1523
enum AVMediaType avcodec_get_type(enum AVCodecID codec_id)
Get the type of the given codec.
Definition: codec_desc.c:2964
static int mkv_write_chapters(AVFormatContext *s)
Definition: matroskaenc.c:1199
#define EBML_ID_EBMLMAXIDLENGTH
Definition: matroska.h:38
int64_t ff_vorbiscomment_length(AVDictionary *m, const char *vendor_string)
Calculate the length in bytes of a VorbisComment.
Definition: vorbiscomment.c:41
#define MATROSKA_ID_CHAPTERFLAGHIDDEN
Definition: matroska.h:256
static const uint8_t offset[127][2]
Definition: vf_spp.c:92
uint32_t crc
Definition: wv.h:41
void ff_put_bmp_header(AVIOContext *pb, AVCodecParameters *par, const AVCodecTag *tags, int for_asf, int ignore_extradata)
Definition: riffenc.c:207
const AVCodecTag ff_codec_wav_tags[]
Definition: riff.c:428
#define FFMAX(a, b)
Definition: common.h:94
static mkv_seekhead * mkv_start_seekhead(AVIOContext *pb, int64_t segment_offset, int numelements)
Initialize a mkv_seekhead element to be ready to index level 1 Matroska elements. ...
Definition: matroskaenc.c:340
int ff_avc_parse_nal_units_buf(const uint8_t *buf_in, uint8_t **buf, int *size)
Definition: avc.c:92
AVRational max_luminance
Max luminance of mastering display (cd/m^2).
int64_t filepos
Definition: matroskaenc.c:68
#define fail()
Definition: checkasm.h:81
int flags
A combination of AV_PKT_FLAG values.
Definition: avcodec.h:1583
int extradata_size
Size of the extradata content in bytes.
Definition: avcodec.h:3933
static void mkv_write_field_order(AVIOContext *pb, enum AVFieldOrder field_order)
Definition: matroskaenc.c:792
const CodecMime ff_mkv_mime_tags[]
Definition: matroska.c:111
#define MATROSKA_ID_TAG
Definition: matroska.h:195
#define AV_DISPOSITION_FORCED
Track should be used during playback by default.
Definition: avformat.h:841
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
Definition: avformat.h:1375
#define LIBAVFORMAT_IDENT
Definition: version.h:44
Views are packed per line, as if interlaced.
Definition: stereo3d.h:97
int seekable
A combination of AVIO_SEEKABLE_ flags or 0 when the stream is not seekable.
Definition: avio.h:207
int void avio_flush(AVIOContext *s)
Force flushing of buffered data.
Definition: aviobuf.c:207
#define MATROSKA_ID_VIDEOCOLOR_LUMINANCEMIN
Definition: matroska.h:154
audio channel layout utility functions
#define EBML_ID_EBMLVERSION
Definition: matroska.h:36
int64_t av_rescale(int64_t a, int64_t b, int64_t c)
Rescale a 64-bit integer with rounding to nearest.
Definition: mathematics.c:129
mkv_cuepoint * entries
Definition: matroskaenc.c:87
void ffio_fill(AVIOContext *s, int b, int count)
Definition: aviobuf.c:173
#define MATROSKA_ID_TAGTARGETS
Definition: matroska.h:202
const AVCodecTag ff_codec_bmp_tags[]
Definition: riff.c:32
int av_strcasecmp(const char *a, const char *b)
Locale-independent case-insensitive compare.
Definition: avstring.c:213
#define MATROSKA_ID_TAGNAME
Definition: matroska.h:197
AVRational min_luminance
Min luminance of mastering display (cd/m^2).
static int put_wv_codecpriv(AVIOContext *pb, AVCodecParameters *par)
Definition: matroskaenc.c:552
static void mkv_free(MatroskaMuxContext *mkv)
Free the members allocated in the mux context.
Definition: matroskaenc.c:315
#define MATROSKA_ID_CHAPTERFLAGENABLED
Definition: matroska.h:257
static int64_t mkv_write_seekhead(AVIOContext *pb, MatroskaMuxContext *mkv)
Write the seek head to the file and free it.
Definition: matroskaenc.c:389
static uint8_t tmp[8]
Definition: des-test.c:38
static int write_trailer(AVFormatContext *s1)
Definition: v4l2enc.c:94
#define AVFMT_GLOBALHEADER
Format wants global header.
Definition: avformat.h:483
int ff_wv_parse_header(WvHeader *wv, const uint8_t *data)
Parse a WavPack block header.
Definition: wv.c:29
int ff_hevc_annexb2mp4_buf(const uint8_t *buf_in, uint8_t **buf_out, int *size, int filter_ps, int *ps_count)
Writes Annex B formatted HEVC NAL units to a data buffer.
Definition: hevc.c:1077
#define MATROSKA_ID_SIMPLETAG
Definition: matroska.h:196
const char * name
Definition: avformat.h:522
internal header for RIFF based (de)muxers do NOT include this in end user applications ...
int64_t duration
Definition: movenc-test.c:63
#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:1624
#define MATROSKA_ID_CHAPTERATOM
Definition: matroska.h:244
int avpriv_split_xiph_headers(const uint8_t *extradata, int extradata_size, int first_header_size, const uint8_t *header_start[3], int header_len[3])
Split a single extradata buffer into the three headers that most Xiph codecs use. ...
Definition: xiph.c:24
AVDictionary * metadata
Definition: avformat.h:945
enum AVColorRange color_range
Video only.
Definition: avcodec.h:4001
Opaque data information usually sparse.
Definition: avutil.h:197
#define MATROSKA_ID_VIDEOCOLORSPACE
Definition: matroska.h:126
#define MATROSKA_ID_CHAPTERS
Definition: matroska.h:63
#define EBML_ID_VOID
Definition: matroska.h:45
#define src
Definition: vp9dsp.c:530
#define OFFSET(x)
Definition: matroskaenc.c:2270
#define AV_STEREO3D_FLAG_INVERT
Inverted views, Right/Bottom represents the left view.
Definition: stereo3d.h:114
#define MATROSKA_ID_AUDIOSAMPLINGFREQ
Definition: matroska.h:157
const char * avcodec_get_name(enum AVCodecID id)
Get the name of a codec.
Definition: utils.c:3075
Views are packed per column.
Definition: stereo3d.h:107
static int mkv_add_cuepoint(mkv_cues *cues, int stream, int tracknum, int64_t ts, int64_t cluster_pos, int64_t relative_pos, int64_t duration)
Definition: matroskaenc.c:444
static void put_ebml_float(AVIOContext *pb, unsigned int elementid, double val)
Definition: matroskaenc.c:243
Stream structure.
Definition: avformat.h:876
#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:258
int64_t end
chapter start/end time in time_base units
Definition: avformat.h:1285
static int mkv_write_track(AVFormatContext *s, MatroskaMuxContext *mkv, int i, AVIOContext *pb, int default_stream_exists)
Definition: matroskaenc.c:929
#define AV_DISPOSITION_DEFAULT
Definition: avformat.h:829
sample_rate
enum AVStereo3DType type
How views are packed within the video.
Definition: stereo3d.h:127
#define MATROSKA_ID_VIDEOCOLORMATRIXCOEFF
Definition: matroska.h:129
#define AV_DISPOSITION_DESCRIPTIONS
Definition: avformat.h:859
#define MATROSKA_ID_TRACKFLAGFORCED
Definition: matroska.h:100
#define MATROSKA_ID_TAGS
Definition: matroska.h:59
#define MATROSKA_ID_VIDEOCOLORPRIMARIES
Definition: matroska.h:140
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_WB32 unsigned int_TMPL AV_RB24
Definition: bytestream.h:87
#define MATROSKA_ID_SEEKID
Definition: matroska.h:213
char * av_strdup(const char *s)
Duplicate the string s.
Definition: mem.c:267
AVIOContext * pb
I/O context.
Definition: avformat.h:1361
void avio_w8(AVIOContext *s, int b)
Definition: aviobuf.c:165
#define MATROSKA_ID_BLOCK
Definition: matroska.h:228
#define MATROSKA_ID_INFO
Definition: matroska.h:56
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
Definition: avpacket.c:549
#define MATROSKA_ID_TAGTARGETS_TRACKUID
Definition: matroska.h:205
static const EbmlSyntax ebml_header[]
Definition: matroskadec.c:366
static const char * format
Definition: movenc-test.c:47
#define MATROSKA_ID_TAGLANG
Definition: matroska.h:199
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:553
Data found in BlockAdditional element of matroska container.
Definition: avcodec.h:1484
GLint GLenum type
Definition: opengl_enc.c:105
#define MATROSKA_ID_TRACKNAME
Definition: matroska.h:96
int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
Set the given entry in *pm, overwriting an existing entry.
Definition: dict.c:69
#define MATROSKA_ID_SEEKENTRY
Definition: matroska.h:210
Describe the class of an AVClass context structure.
Definition: log.h:67
#define MATROSKA_ID_EDITIONENTRY
Definition: matroska.h:243
#define FF_COMPLIANCE_NORMAL
Definition: avcodec.h:2862
#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:152
#define MATROSKA_ID_BLOCKGROUP
Definition: matroska.h:220
#define MATROSKA_ID_VIDEOPIXELHEIGHT
Definition: matroska.h:115
static int mkv_write_tracks(AVFormatContext *s)
Definition: matroskaenc.c:1174
rational number numerator/denominator
Definition: rational.h:43
Copyright (c) 2016 Neil Birkbeck neil.birkbeck@gmail.com
static void put_ebml_uint(AVIOContext *pb, unsigned int elementid, uint64_t val)
Definition: matroskaenc.c:217
#define MATROSKA_ID_CUEDURATION
Definition: matroska.h:191
#define MATROSKA_ID_CUETIME
Definition: matroska.h:184
Not part of ABI.
Definition: pixfmt.h:423
AVFieldOrder
Definition: avcodec.h:1624
Recommmends skipping the specified number of samples.
Definition: avcodec.h:1449
AVIOContext * dyn_bc
Definition: matroskaenc.c:107
AVMediaType
Definition: avutil.h:191
av_cold void av_lfg_init(AVLFG *c, unsigned int seed)
Definition: lfg.c:30
int64_t duration_offset
Definition: matroskaenc.c:113
#define MATROSKA_ID_VIDEOCOLORTRANSFERCHARACTERISTICS
Definition: matroska.h:138
#define MATROSKA_ID_TITLE
Definition: matroska.h:68
#define snprintf
Definition: snprintf.h:34
#define MATROSKA_ID_TRACKVIDEO
Definition: matroska.h:81
static int mkv_strip_wavpack(const uint8_t *src, uint8_t **pdst, int *size)
Definition: matroskaenc.c:1673
static void put_ebml_id(AVIOContext *pb, unsigned int id)
Definition: matroskaenc.c:162
#define MATROSKA_ID_VIDEOCOLORMASTERINGMETA
Definition: matroska.h:144
AVRational display_primaries[3][2]
CIE 1931 xy chromaticity coords of color primaries (r, g, b order).
static void put_ebml_sint(AVIOContext *pb, unsigned int elementid, int64_t val)
Definition: matroskaenc.c:230
#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:435
int64_t * stream_duration_offsets
Definition: matroskaenc.c:137
#define MATROSKA_ID_CHAPTERDISPLAY
Definition: matroska.h:247
static int put_xiph_codecpriv(AVFormatContext *s, AVIOContext *pb, AVCodecParameters *par)
Definition: matroskaenc.c:524
static av_always_inline AVRational av_inv_q(AVRational q)
Invert a rational.
Definition: rational.h:133
static int flags
Definition: cpu.c:47
int bits_per_raw_sample
This is the number of valid bits in each output sample.
Definition: avcodec.h:3970
#define MATROSKA_ID_FILENAME
Definition: matroska.h:237
int av_get_bytes_per_sample(enum AVSampleFormat sample_fmt)
Return number of bytes per sample.
Definition: samplefmt.c:104
#define MATROSKA_ID_BLOCKADDITIONAL
Definition: matroska.h:224
const AVMetadataConv ff_mkv_metadata_conv[]
Definition: matroska.c:121
#define MATROSKA_ID_CODECID
Definition: matroska.h:88
static const AVCodecTag additional_video_tags[]
Definition: matroskaenc.c:2255
static int put_flac_codecpriv(AVFormatContext *s, AVIOContext *pb, AVCodecParameters *par)
Definition: matroskaenc.c:561
#define MATROSKA_ID_VIDEOFIELDORDER
Definition: matroska.h:122
int64_t start
Definition: avformat.h:1285
int sample_rate
Audio only.
Definition: avcodec.h:4025
#define MATROSKA_ID_VIDEOALPHAMODE
Definition: matroska.h:124
static int mkv_write_trailer(AVFormatContext *s)
Definition: matroskaenc.c:2084
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_RB64
Definition: bytestream.h:87
Main libavformat public API header.
static int mkv_check_bitstream(struct AVFormatContext *s, const AVPacket *pkt)
Definition: matroskaenc.c:2224
attribute_deprecated int64_t convergence_duration
Definition: avcodec.h:1606
#define MATROSKA_ID_CUETRACK
Definition: matroska.h:188
#define MATROSKA_ID_SEEKPOSITION
Definition: matroska.h:214
int64_t last_track_timestamp[MAX_TRACKS]
Definition: matroskaenc.c:134
#define MATROSKA_ID_CODECDELAY
Definition: matroska.h:94
#define FF_DISABLE_DEPRECATION_WARNINGS
Definition: internal.h:80
#define MATROSKA_ID_CHAPTERTIMESTART
Definition: matroska.h:245
common internal api header.
#define MATROSKA_ID_VIDEOCOLORRANGE
Definition: matroska.h:137
static void put_ebml_binary(AVIOContext *pb, unsigned int elementid, const void *buf, int size)
Definition: matroskaenc.c:250
rational numbers
Video is not stereoscopic (and metadata has to be there).
Definition: stereo3d.h:35
Views are packed in a checkerboard-like structure per pixel.
Definition: stereo3d.h:76
static double c[64]
static void mkv_write_block(AVFormatContext *s, AVIOContext *pb, unsigned int blockid, AVPacket *pkt, int keyframe)
Definition: matroskaenc.c:1726
static int mkv_write_flush_packet(AVFormatContext *s, AVPacket *pkt)
Definition: matroskaenc.c:2060
int disposition
AV_DISPOSITION_* bit field.
Definition: avformat.h:934
static void put_ebml_void(AVIOContext *pb, uint64_t size)
Write a void element of a given size.
Definition: matroskaenc.c:270
static unsigned bit_depth(uint64_t mask)
Definition: af_astats.c:142
AVRational time_base
time base in which the start/end timestamps are specified
Definition: avformat.h:1284
void * av_realloc_array(void *ptr, size_t nmemb, size_t size)
Definition: mem.c:208
void av_init_packet(AVPacket *pkt)
Initialize optional fields of a packet with default values.
Definition: avpacket.c:33
char * key
Definition: dict.h:86
#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:1495
#define MATROSKA_ID_SEEKHEAD
Definition: matroska.h:60
#define EBML_ID_HEADER
Definition: matroska.h:33
#define AVFMT_VARIABLE_FPS
Format allows variable fps.
Definition: avformat.h:487
ebml_master cluster
Definition: matroskaenc.c:110
#define av_free(p)
char * value
Definition: dict.h:87
#define FF_ENABLE_DEPRECATION_WARNINGS
Definition: internal.h:81
#define MATROSKA_ID_POINTENTRY
Definition: matroska.h:181
mkv_seekhead_entry * entries
Definition: matroskaenc.c:72
int len
static int mkv_write_native_codecprivate(AVFormatContext *s, AVCodecParameters *par, AVIOContext *dyn_cp)
Definition: matroskaenc.c:625
static int mkv_write_stereo_mode(AVFormatContext *s, AVIOContext *pb, AVStream *st, int mode, int *h_width, int *h_height)
Definition: matroskaenc.c:831
#define MATROSKA_ID_FILEUID
Definition: matroska.h:240
int ff_stream_add_bitstream_filter(AVStream *st, const char *name, const char *args)
Add a bitstream filter to a stream.
Definition: utils.c:4968
static int mkv_write_tag_targets(AVFormatContext *s, unsigned int elementid, unsigned int uid, ebml_master *tags, ebml_master *tag)
Definition: matroskaenc.c:1285
void * priv_data
Format private data.
Definition: avformat.h:1347
#define MATROSKA_ID_CHAPTERUID
Definition: matroska.h:255
Views are on top of each other.
Definition: stereo3d.h:55
static void write_header(FFV1Context *f)
Definition: ffv1enc.c:497
int bits_per_coded_sample
The number of bits per sample in the codedwords.
Definition: avcodec.h:3957
int64_t relative_pos
relative offset from the position of the cluster containing the block
Definition: matroskaenc.c:81
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
Definition: avcodec.h:3929
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed...
Definition: avcodec.h:1576
static void mkv_flush_dynbuf(AVFormatContext *s)
Definition: matroskaenc.c:1863
static const AVOption options[]
Definition: matroskaenc.c:2272
static void * av_mallocz_array(size_t nmemb, size_t size)
Definition: mem.h:229
#define EBML_ID_EBMLMAXSIZELENGTH
Definition: matroska.h:39
void avio_wb32(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:337
#define MATROSKA_ID_CHAPSTRING
Definition: matroska.h:248
#define av_freep(p)
#define MATROSKA_ID_TAGSTRING
Definition: matroska.h:198
#define AV_DICT_IGNORE_SUFFIX
Return first entry in a dictionary whose first part corresponds to the search key, ignoring the suffix of the found key string.
Definition: dict.h:70
uint8_t * av_packet_get_side_data(AVPacket *pkt, enum AVPacketSideDataType type, int *size)
Get side information from packet.
Definition: avpacket.c:320
#define MODE_MATROSKAv2
Definition: matroskaenc.c:97
uint32_t av_get_random_seed(void)
Get a seed to use in conjunction with random functions.
Definition: random_seed.c:114
int ff_isom_write_hvcc(AVIOContext *pb, const uint8_t *data, int size, int ps_array_completeness)
Writes HEVC extradata (parameter sets, declarative SEI NAL units) to the provided AVIOContext...
Definition: hevc.c:1093
const CodecMime ff_mkv_image_mime_tags[]
Definition: matroska.c:102
AVCodecParameters * codecpar
Definition: avformat.h:1006
#define MODE_WEBM
Definition: matroskaenc.c:98
uint32_t codec_tag
Additional information about the codec (corresponds to the AVI FOURCC).
Definition: avcodec.h:3919
static int mkv_write_packet(AVFormatContext *s, AVPacket *pkt)
Definition: matroskaenc.c:1990
#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:145
static mkv_cues * mkv_start_cues(int64_t segment_offset)
Definition: matroskaenc.c:434
int stream_index
Definition: avcodec.h:1579
int num_entries
Definition: matroskaenc.c:88
#define EBML_ID_DOCTYPEVERSION
Definition: matroska.h:41
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
Definition: avformat.h:913
static void end_ebml_master(AVIOContext *pb, ebml_master master)
Definition: matroskaenc.c:296
int64_t segment_offset
Definition: matroskaenc.c:109
#define MATROSKA_ID_ATTACHEDFILE
Definition: matroska.h:235
#define MATROSKA_ID_VIDEOCOLOR_GY
Definition: matroska.h:148
static ebml_master start_ebml_master(AVIOContext *pb, unsigned int elementid, uint64_t expectedsize)
Definition: matroskaenc.c:287
mkv_seekhead * main_seekhead
Definition: matroskaenc.c:115
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_RL32
Definition: bytestream.h:87
This structure stores compressed data.
Definition: avcodec.h:1554
int64_t * stream_durations
Definition: matroskaenc.c:136
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:252
#define MATROSKA_ID_VIDEOCOLOR_RY
Definition: matroska.h:146
uint32_t blocksize
Definition: wv.h:35
static int mkv_query_codec(enum AVCodecID codec_id, int std_compliance)
Definition: matroskaenc.c:2190
static void put_xiph_size(AVIOContext *pb, int size)
Definition: matroskaenc.c:306
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: avcodec.h:1570
Not part of ABI.
Definition: pixfmt.h:441
#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:240
const CodecTags ff_mkv_codec_tags[]
Definition: matroska.c:29
int avio_printf(AVIOContext *s, const char *fmt,...) av_printf_format(2
#define AV_WL32(p, v)
Definition: intreadwrite.h:426
#define MATROSKA_ID_DISCARDPADDING
Definition: matroska.h:232
#define FF_PUT_WAV_HEADER_FORCE_WAVEFORMATEX
Tell ff_put_wav_header() to use WAVEFORMATEX even for PCM codecs.
Definition: riff.h:53