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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/crc.h"
41 #include "libavutil/dict.h"
42 #include "libavutil/intfloat.h"
43 #include "libavutil/intreadwrite.h"
44 #include "libavutil/lfg.h"
46 #include "libavutil/mathematics.h"
47 #include "libavutil/opt.h"
48 #include "libavutil/parseutils.h"
49 #include "libavutil/random_seed.h"
50 #include "libavutil/rational.h"
51 #include "libavutil/samplefmt.h"
52 #include "libavutil/sha.h"
53 #include "libavutil/stereo3d.h"
54 
55 #include "libavcodec/xiph.h"
56 #include "libavcodec/mpeg4audio.h"
57 #include "libavcodec/internal.h"
58 
59 typedef struct ebml_master {
60  int64_t pos; ///< absolute offset in the file where the master's elements start
61  int sizebytes; ///< how many bytes were reserved for the size
62 } ebml_master;
63 
64 typedef struct mkv_seekhead_entry {
65  unsigned int elementid;
66  uint64_t segmentpos;
68 
69 typedef struct mkv_seekhead {
70  int64_t filepos;
71  int64_t segment_offset; ///< the file offset to the beginning of the segment
72  int reserved_size; ///< -1 if appending to file
76 } mkv_seekhead;
77 
78 typedef struct mkv_cuepoint {
79  uint64_t pts;
81  int tracknum;
82  int64_t cluster_pos; ///< file offset of the cluster containing the block
83  int64_t relative_pos; ///< relative offset from the position of the cluster containing the block
84  int64_t duration; ///< duration of the block according to time base
85 } mkv_cuepoint;
86 
87 typedef struct mkv_cues {
88  int64_t segment_offset;
91 } mkv_cues;
92 
93 typedef struct mkv_track {
94  int write_dts;
95  int has_cue;
97  int64_t ts_offset;
98 } mkv_track;
99 
100 typedef struct mkv_attachment {
102  uint32_t fileuid;
104 
105 typedef struct mkv_attachments {
109 
110 #define MODE_MATROSKAv2 0x01
111 #define MODE_WEBM 0x02
112 
113 /** Maximum number of tracks allowed in a Matroska file (with track numbers in
114  * range 1 to 126 (inclusive) */
115 #define MAX_TRACKS 126
116 
117 typedef struct MatroskaMuxContext {
118  const AVClass *class;
119  int mode;
128  int64_t segment_offset;
130  int64_t cluster_pos; ///< file offset of the current cluster
131  int64_t cluster_pts;
133  int64_t duration;
138 
140 
143 
146  int64_t cues_pos;
148  int is_dash;
150  int is_live;
152 
155 
157 
160 
163 
164 
165 /** 2 bytes * 3 for EBML IDs, 3 1-byte EBML lengths, 8 bytes for 64 bit
166  * offset, 4 bytes for target EBML ID */
167 #define MAX_SEEKENTRY_SIZE 21
168 
169 /** per-cuepoint-track - 5 1-byte EBML IDs, 5 1-byte EBML sizes, 4
170  * 8-byte uint max */
171 #define MAX_CUETRACKPOS_SIZE 42
172 
173 /** per-cuepoint - 2 1-byte EBML IDs, 2 1-byte EBML sizes, 8-byte uint max */
174 #define MAX_CUEPOINT_SIZE(num_tracks) 12 + MAX_CUETRACKPOS_SIZE * num_tracks
175 
176 /** Seek preroll value for opus */
177 #define OPUS_SEEK_PREROLL 80000000
178 
179 static int ebml_id_size(unsigned int id)
180 {
181  return (av_log2(id + 1) - 1) / 7 + 1;
182 }
183 
184 static void put_ebml_id(AVIOContext *pb, unsigned int id)
185 {
186  int i = ebml_id_size(id);
187  while (i--)
188  avio_w8(pb, (uint8_t)(id >> (i * 8)));
189 }
190 
191 /**
192  * Write an EBML size meaning "unknown size".
193  *
194  * @param bytes The number of bytes the size should occupy (maximum: 8).
195  */
196 static void put_ebml_size_unknown(AVIOContext *pb, int bytes)
197 {
198  av_assert0(bytes <= 8);
199  avio_w8(pb, 0x1ff >> bytes);
200  ffio_fill(pb, 0xff, bytes - 1);
201 }
202 
203 /**
204  * Calculate how many bytes are needed to represent a given number in EBML.
205  */
206 static int ebml_num_size(uint64_t num)
207 {
208  int bytes = 1;
209  while ((num + 1) >> bytes * 7)
210  bytes++;
211  return bytes;
212 }
213 
214 /**
215  * Write a number in EBML variable length format.
216  *
217  * @param bytes The number of bytes that need to be used to write the number.
218  * If zero, any number of bytes can be used.
219  */
220 static void put_ebml_num(AVIOContext *pb, uint64_t num, int bytes)
221 {
222  int i, needed_bytes = ebml_num_size(num);
223 
224  // sizes larger than this are currently undefined in EBML
225  av_assert0(num < (1ULL << 56) - 1);
226 
227  if (bytes == 0)
228  // don't care how many bytes are used, so use the min
229  bytes = needed_bytes;
230  // the bytes needed to write the given size would exceed the bytes
231  // that we need to use, so write unknown size. This shouldn't happen.
232  av_assert0(bytes >= needed_bytes);
233 
234  num |= 1ULL << bytes * 7;
235  for (i = bytes - 1; i >= 0; i--)
236  avio_w8(pb, (uint8_t)(num >> i * 8));
237 }
238 
239 static void put_ebml_uint(AVIOContext *pb, unsigned int elementid, uint64_t val)
240 {
241  int i, bytes = 1;
242  uint64_t tmp = val;
243  while (tmp >>= 8)
244  bytes++;
245 
246  put_ebml_id(pb, elementid);
247  put_ebml_num(pb, bytes, 0);
248  for (i = bytes - 1; i >= 0; i--)
249  avio_w8(pb, (uint8_t)(val >> i * 8));
250 }
251 
252 static void put_ebml_sint(AVIOContext *pb, unsigned int elementid, int64_t val)
253 {
254  int i, bytes = 1;
255  uint64_t tmp = 2*(val < 0 ? val^-1 : val);
256 
257  while (tmp>>=8) bytes++;
258 
259  put_ebml_id(pb, elementid);
260  put_ebml_num(pb, bytes, 0);
261  for (i = bytes - 1; i >= 0; i--)
262  avio_w8(pb, (uint8_t)(val >> i * 8));
263 }
264 
265 static void put_ebml_float(AVIOContext *pb, unsigned int elementid, double val)
266 {
267  put_ebml_id(pb, elementid);
268  put_ebml_num(pb, 8, 0);
269  avio_wb64(pb, av_double2int(val));
270 }
271 
272 static void put_ebml_binary(AVIOContext *pb, unsigned int elementid,
273  const void *buf, int size)
274 {
275  put_ebml_id(pb, elementid);
276  put_ebml_num(pb, size, 0);
277  avio_write(pb, buf, size);
278 }
279 
280 static void put_ebml_string(AVIOContext *pb, unsigned int elementid,
281  const char *str)
282 {
283  put_ebml_binary(pb, elementid, str, strlen(str));
284 }
285 
286 /**
287  * Write a void element of a given size. Useful for reserving space in
288  * the file to be written to later.
289  *
290  * @param size The number of bytes to reserve, which must be at least 2.
291  */
292 static void put_ebml_void(AVIOContext *pb, uint64_t size)
293 {
294  int64_t currentpos = avio_tell(pb);
295 
296  av_assert0(size >= 2);
297 
299  // we need to subtract the length needed to store the size from the
300  // size we need to reserve so 2 cases, we use 8 bytes to store the
301  // size if possible, 1 byte otherwise
302  if (size < 10)
303  put_ebml_num(pb, size - 2, 0);
304  else
305  put_ebml_num(pb, size - 9, 8);
306  ffio_fill(pb, 0, currentpos + size - avio_tell(pb));
307 }
308 
309 static ebml_master start_ebml_master(AVIOContext *pb, unsigned int elementid,
310  uint64_t expectedsize)
311 {
312  int bytes = expectedsize ? ebml_num_size(expectedsize) : 8;
313  put_ebml_id(pb, elementid);
314  put_ebml_size_unknown(pb, bytes);
315  return (ebml_master) {avio_tell(pb), bytes };
316 }
317 
319 {
320  int64_t pos = avio_tell(pb);
321 
322  if (avio_seek(pb, master.pos - master.sizebytes, SEEK_SET) < 0)
323  return;
324  put_ebml_num(pb, pos - master.pos, master.sizebytes);
325  avio_seek(pb, pos, SEEK_SET);
326 }
327 
329  ebml_master *master, unsigned int elementid, uint64_t expectedsize)
330 {
331  int ret;
332 
333  if ((ret = avio_open_dyn_buf(dyn_cp)) < 0)
334  return ret;
335 
336  if (pb->seekable) {
337  *master = start_ebml_master(pb, elementid, expectedsize);
338  if (mkv->write_crc && mkv->mode != MODE_WEBM)
339  put_ebml_void(*dyn_cp, 6); /* Reserve space for CRC32 so position/size calculations using avio_tell() take it into account */
340  } else
341  *master = start_ebml_master(*dyn_cp, elementid, expectedsize);
342 
343  return 0;
344 }
345 
348 {
349  uint8_t *buf, crc[4];
350  int size, skip = 0;
351 
352  if (pb->seekable) {
353  size = avio_close_dyn_buf(*dyn_cp, &buf);
354  if (mkv->write_crc && mkv->mode != MODE_WEBM) {
355  skip = 6; /* Skip reserved 6-byte long void element from the dynamic buffer. */
356  AV_WL32(crc, av_crc(av_crc_get_table(AV_CRC_32_IEEE_LE), UINT32_MAX, buf + skip, size - skip) ^ UINT32_MAX);
357  put_ebml_binary(pb, EBML_ID_CRC32, crc, sizeof(crc));
358  }
359  avio_write(pb, buf + skip, size - skip);
360  end_ebml_master(pb, master);
361  } else {
362  end_ebml_master(*dyn_cp, master);
363  size = avio_close_dyn_buf(*dyn_cp, &buf);
364  avio_write(pb, buf, size);
365  }
366  av_free(buf);
367  *dyn_cp = NULL;
368 }
369 
370 static void put_xiph_size(AVIOContext *pb, int size)
371 {
372  ffio_fill(pb, 255, size / 255);
373  avio_w8(pb, size % 255);
374 }
375 
376 /**
377  * Free the members allocated in the mux context.
378  */
379 static void mkv_free(MatroskaMuxContext *mkv) {
380  if (mkv->main_seekhead) {
382  av_freep(&mkv->main_seekhead);
383  }
384  if (mkv->cues) {
385  av_freep(&mkv->cues->entries);
386  av_freep(&mkv->cues);
387  }
388  if (mkv->attachments) {
389  av_freep(&mkv->attachments->entries);
390  av_freep(&mkv->attachments);
391  }
392  av_freep(&mkv->tracks);
393  av_freep(&mkv->stream_durations);
395 }
396 
397 /**
398  * Initialize a mkv_seekhead element to be ready to index level 1 Matroska
399  * elements. If a maximum number of elements is specified, enough space
400  * will be reserved at the current file location to write a seek head of
401  * that size.
402  *
403  * @param segment_offset The absolute offset to the position in the file
404  * where the segment begins.
405  * @param numelements The maximum number of elements that will be indexed
406  * by this seek head, 0 if unlimited.
407  */
408 static mkv_seekhead *mkv_start_seekhead(AVIOContext *pb, int64_t segment_offset,
409  int numelements)
410 {
411  mkv_seekhead *new_seekhead = av_mallocz(sizeof(mkv_seekhead));
412  if (!new_seekhead)
413  return NULL;
414 
415  new_seekhead->segment_offset = segment_offset;
416 
417  if (numelements > 0) {
418  new_seekhead->filepos = avio_tell(pb);
419  // 21 bytes max for a seek entry, 10 bytes max for the SeekHead ID
420  // and size, 6 bytes for a CRC32 element, and 3 bytes to guarantee
421  // that an EBML void element will fit afterwards
422  new_seekhead->reserved_size = numelements * MAX_SEEKENTRY_SIZE + 19;
423  new_seekhead->max_entries = numelements;
424  put_ebml_void(pb, new_seekhead->reserved_size);
425  }
426  return new_seekhead;
427 }
428 
429 static int mkv_add_seekhead_entry(mkv_seekhead *seekhead, unsigned int elementid, uint64_t filepos)
430 {
431  mkv_seekhead_entry *entries = seekhead->entries;
432 
433  // don't store more elements than we reserved space for
434  if (seekhead->max_entries > 0 && seekhead->max_entries <= seekhead->num_entries)
435  return -1;
436 
437  entries = av_realloc_array(entries, seekhead->num_entries + 1, sizeof(mkv_seekhead_entry));
438  if (!entries)
439  return AVERROR(ENOMEM);
440  seekhead->entries = entries;
441 
442  seekhead->entries[seekhead->num_entries].elementid = elementid;
443  seekhead->entries[seekhead->num_entries++].segmentpos = filepos - seekhead->segment_offset;
444 
445  return 0;
446 }
447 
448 /**
449  * Write the seek head to the file and free it. If a maximum number of
450  * elements was specified to mkv_start_seekhead(), the seek head will
451  * be written at the location reserved for it. Otherwise, it is written
452  * at the current location in the file.
453  *
454  * @return The file offset where the seekhead was written,
455  * -1 if an error occurred.
456  */
458 {
459  AVIOContext *dyn_cp;
460  mkv_seekhead *seekhead = mkv->main_seekhead;
461  ebml_master metaseek, seekentry;
462  int64_t currentpos;
463  int i;
464 
465  currentpos = avio_tell(pb);
466 
467  if (seekhead->reserved_size > 0) {
468  if (avio_seek(pb, seekhead->filepos, SEEK_SET) < 0) {
469  currentpos = -1;
470  goto fail;
471  }
472  }
473 
474  if (start_ebml_master_crc32(pb, &dyn_cp, mkv, &metaseek, MATROSKA_ID_SEEKHEAD,
475  seekhead->reserved_size) < 0) {
476  currentpos = -1;
477  goto fail;
478  }
479 
480  for (i = 0; i < seekhead->num_entries; i++) {
481  mkv_seekhead_entry *entry = &seekhead->entries[i];
482 
484 
486  put_ebml_num(dyn_cp, ebml_id_size(entry->elementid), 0);
487  put_ebml_id(dyn_cp, entry->elementid);
488 
490  end_ebml_master(dyn_cp, seekentry);
491  }
492  end_ebml_master_crc32(pb, &dyn_cp, mkv, metaseek);
493 
494  if (seekhead->reserved_size > 0) {
495  uint64_t remaining = seekhead->filepos + seekhead->reserved_size - avio_tell(pb);
496  put_ebml_void(pb, remaining);
497  avio_seek(pb, currentpos, SEEK_SET);
498 
499  currentpos = seekhead->filepos;
500  }
501 fail:
503  av_freep(&mkv->main_seekhead);
504 
505  return currentpos;
506 }
507 
508 static mkv_cues *mkv_start_cues(int64_t segment_offset)
509 {
510  mkv_cues *cues = av_mallocz(sizeof(mkv_cues));
511  if (!cues)
512  return NULL;
513 
514  cues->segment_offset = segment_offset;
515  return cues;
516 }
517 
518 static int mkv_add_cuepoint(mkv_cues *cues, int stream, int tracknum, int64_t ts,
519  int64_t cluster_pos, int64_t relative_pos, int64_t duration)
520 {
521  mkv_cuepoint *entries = cues->entries;
522 
523  if (ts < 0)
524  return 0;
525 
526  entries = av_realloc_array(entries, cues->num_entries + 1, sizeof(mkv_cuepoint));
527  if (!entries)
528  return AVERROR(ENOMEM);
529  cues->entries = entries;
530 
531  cues->entries[cues->num_entries].pts = ts;
532  cues->entries[cues->num_entries].stream_idx = stream;
533  cues->entries[cues->num_entries].tracknum = tracknum;
534  cues->entries[cues->num_entries].cluster_pos = cluster_pos - cues->segment_offset;
535  cues->entries[cues->num_entries].relative_pos = relative_pos;
536  cues->entries[cues->num_entries++].duration = duration;
537 
538  return 0;
539 }
540 
541 static int64_t mkv_write_cues(AVFormatContext *s, mkv_cues *cues, mkv_track *tracks, int num_tracks)
542 {
543  MatroskaMuxContext *mkv = s->priv_data;
544  AVIOContext *dyn_cp, *pb = s->pb;
545  ebml_master cues_element;
546  int64_t currentpos;
547  int i, j, ret;
548 
549  currentpos = avio_tell(pb);
550  ret = start_ebml_master_crc32(pb, &dyn_cp, mkv, &cues_element, MATROSKA_ID_CUES, 0);
551  if (ret < 0)
552  return ret;
553 
554  for (i = 0; i < cues->num_entries; i++) {
555  ebml_master cuepoint, track_positions;
556  mkv_cuepoint *entry = &cues->entries[i];
557  uint64_t pts = entry->pts;
558  int ctp_nb = 0;
559 
560  // Calculate the number of entries, so we know the element size
561  for (j = 0; j < num_tracks; j++)
562  tracks[j].has_cue = 0;
563  for (j = 0; j < cues->num_entries - i && entry[j].pts == pts; j++) {
564  int tracknum = entry[j].stream_idx;
565  av_assert0(tracknum>=0 && tracknum<num_tracks);
566  if (tracks[tracknum].has_cue && s->streams[tracknum]->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE)
567  continue;
568  tracks[tracknum].has_cue = 1;
569  ctp_nb ++;
570  }
571 
572  cuepoint = start_ebml_master(dyn_cp, MATROSKA_ID_POINTENTRY, MAX_CUEPOINT_SIZE(ctp_nb));
573  put_ebml_uint(dyn_cp, MATROSKA_ID_CUETIME, pts);
574 
575  // put all the entries from different tracks that have the exact same
576  // timestamp into the same CuePoint
577  for (j = 0; j < num_tracks; j++)
578  tracks[j].has_cue = 0;
579  for (j = 0; j < cues->num_entries - i && entry[j].pts == pts; j++) {
580  int tracknum = entry[j].stream_idx;
581  av_assert0(tracknum>=0 && tracknum<num_tracks);
582  if (tracks[tracknum].has_cue && s->streams[tracknum]->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE)
583  continue;
584  tracks[tracknum].has_cue = 1;
586  put_ebml_uint(dyn_cp, MATROSKA_ID_CUETRACK , entry[j].tracknum );
587  put_ebml_uint(dyn_cp, MATROSKA_ID_CUECLUSTERPOSITION , entry[j].cluster_pos);
588  put_ebml_uint(dyn_cp, MATROSKA_ID_CUERELATIVEPOSITION, entry[j].relative_pos);
589  if (entry[j].duration != -1)
590  put_ebml_uint(dyn_cp, MATROSKA_ID_CUEDURATION , entry[j].duration);
591  end_ebml_master(dyn_cp, track_positions);
592  }
593  i += j - 1;
594  end_ebml_master(dyn_cp, cuepoint);
595  }
596  end_ebml_master_crc32(pb, &dyn_cp, mkv, cues_element);
597 
598  return currentpos;
599 }
600 
602 {
603  const uint8_t *header_start[3];
604  int header_len[3];
605  int first_header_size;
606  int j;
607 
608  if (par->codec_id == AV_CODEC_ID_VORBIS)
609  first_header_size = 30;
610  else
611  first_header_size = 42;
612 
614  first_header_size, header_start, header_len) < 0) {
615  av_log(s, AV_LOG_ERROR, "Extradata corrupt.\n");
616  return -1;
617  }
618 
619  avio_w8(pb, 2); // number packets - 1
620  for (j = 0; j < 2; j++) {
621  put_xiph_size(pb, header_len[j]);
622  }
623  for (j = 0; j < 3; j++)
624  avio_write(pb, header_start[j], header_len[j]);
625 
626  return 0;
627 }
628 
630 {
631  if (par->extradata && par->extradata_size == 2)
632  avio_write(pb, par->extradata, 2);
633  else
634  avio_wl16(pb, 0x403); // fallback to the version mentioned in matroska specs
635  return 0;
636 }
637 
639  AVIOContext *pb, AVCodecParameters *par)
640 {
641  int write_comment = (par->channel_layout &&
642  !(par->channel_layout & ~0x3ffffULL) &&
644  int ret = ff_flac_write_header(pb, par->extradata, par->extradata_size,
645  !write_comment);
646 
647  if (ret < 0)
648  return ret;
649 
650  if (write_comment) {
651  const char *vendor = (s->flags & AVFMT_FLAG_BITEXACT) ?
652  "Lavf" : LIBAVFORMAT_IDENT;
653  AVDictionary *dict = NULL;
654  uint8_t buf[32], *data, *p;
655  int64_t len;
656 
657  snprintf(buf, sizeof(buf), "0x%"PRIx64, par->channel_layout);
658  av_dict_set(&dict, "WAVEFORMATEXTENSIBLE_CHANNEL_MASK", buf, 0);
659 
660  len = ff_vorbiscomment_length(dict, vendor);
661  if (len >= ((1<<24) - 4))
662  return AVERROR(EINVAL);
663 
664  data = av_malloc(len + 4);
665  if (!data) {
666  av_dict_free(&dict);
667  return AVERROR(ENOMEM);
668  }
669 
670  data[0] = 0x84;
671  AV_WB24(data + 1, len);
672 
673  p = data + 4;
674  ff_vorbiscomment_write(&p, &dict, vendor);
675 
676  avio_write(pb, data, len + 4);
677 
678  av_freep(&data);
679  av_dict_free(&dict);
680  }
681 
682  return 0;
683 }
684 
686  int *sample_rate, int *output_sample_rate)
687 {
688  MPEG4AudioConfig mp4ac;
689 
690  if (avpriv_mpeg4audio_get_config(&mp4ac, par->extradata,
691  par->extradata_size * 8, 1) < 0) {
692  av_log(s, AV_LOG_ERROR,
693  "Error parsing AAC extradata, unable to determine samplerate.\n");
694  return AVERROR(EINVAL);
695  }
696 
697  *sample_rate = mp4ac.sample_rate;
698  *output_sample_rate = mp4ac.ext_sample_rate;
699  return 0;
700 }
701 
703  AVCodecParameters *par,
704  AVIOContext *dyn_cp)
705 {
706  switch (par->codec_id) {
707  case AV_CODEC_ID_VORBIS:
708  case AV_CODEC_ID_THEORA:
709  return put_xiph_codecpriv(s, dyn_cp, par);
710  case AV_CODEC_ID_FLAC:
711  return put_flac_codecpriv(s, dyn_cp, par);
712  case AV_CODEC_ID_WAVPACK:
713  return put_wv_codecpriv(dyn_cp, par);
714  case AV_CODEC_ID_H264:
715  return ff_isom_write_avcc(dyn_cp, par->extradata,
716  par->extradata_size);
717  case AV_CODEC_ID_HEVC:
718  ff_isom_write_hvcc(dyn_cp, par->extradata,
719  par->extradata_size, 0);
720  return 0;
721  case AV_CODEC_ID_ALAC:
722  if (par->extradata_size < 36) {
723  av_log(s, AV_LOG_ERROR,
724  "Invalid extradata found, ALAC expects a 36-byte "
725  "QuickTime atom.");
726  return AVERROR_INVALIDDATA;
727  } else
728  avio_write(dyn_cp, par->extradata + 12,
729  par->extradata_size - 12);
730  break;
731  default:
732  if (par->codec_id == AV_CODEC_ID_PRORES &&
734  avio_wl32(dyn_cp, par->codec_tag);
735  } else if (par->extradata_size && par->codec_id != AV_CODEC_ID_TTA)
736  avio_write(dyn_cp, par->extradata, par->extradata_size);
737  }
738 
739  return 0;
740 }
741 
743  AVCodecParameters *par,
744  int native_id, int qt_id)
745 {
746  AVIOContext *dyn_cp;
747  uint8_t *codecpriv;
748  int ret, codecpriv_size;
749 
750  ret = avio_open_dyn_buf(&dyn_cp);
751  if (ret < 0)
752  return ret;
753 
754  if (native_id) {
755  ret = mkv_write_native_codecprivate(s, par, dyn_cp);
756  } else if (par->codec_type == AVMEDIA_TYPE_VIDEO) {
757  if (qt_id) {
758  if (!par->codec_tag)
760  par->codec_id);
763  ) {
764  int i;
765  avio_wb32(dyn_cp, 0x5a + par->extradata_size);
766  avio_wl32(dyn_cp, par->codec_tag);
767  for(i = 0; i < 0x5a - 8; i++)
768  avio_w8(dyn_cp, 0);
769  }
770  avio_write(dyn_cp, par->extradata, par->extradata_size);
771  } else {
773  av_log(s, AV_LOG_WARNING, "codec %s is not supported by this format\n",
774  avcodec_get_name(par->codec_id));
775 
776  if (!par->codec_tag)
778  par->codec_id);
779  if (!par->codec_tag && par->codec_id != AV_CODEC_ID_RAWVIDEO) {
780  av_log(s, AV_LOG_ERROR, "No bmp codec tag found for codec %s\n",
781  avcodec_get_name(par->codec_id));
782  ret = AVERROR(EINVAL);
783  }
784 
785  ff_put_bmp_header(dyn_cp, par, ff_codec_bmp_tags, 0, 0);
786  }
787  } else if (par->codec_type == AVMEDIA_TYPE_AUDIO) {
788  unsigned int tag;
790  if (!tag) {
791  av_log(s, AV_LOG_ERROR, "No wav codec tag found for codec %s\n",
792  avcodec_get_name(par->codec_id));
793  ret = AVERROR(EINVAL);
794  }
795  if (!par->codec_tag)
796  par->codec_tag = tag;
797 
799  }
800 
801  codecpriv_size = avio_close_dyn_buf(dyn_cp, &codecpriv);
802  if (codecpriv_size)
804  codecpriv_size);
805  av_free(codecpriv);
806  return ret;
807 }
808 
810  AVIOContext *dyn_cp;
811  uint8_t *colorinfo_ptr;
812  int side_data_size = 0;
813  int ret, colorinfo_size;
814  const uint8_t *side_data = av_stream_get_side_data(
815  st, AV_PKT_DATA_MASTERING_DISPLAY_METADATA, &side_data_size);
816 
817  ret = avio_open_dyn_buf(&dyn_cp);
818  if (ret < 0)
819  return ret;
820 
821  if (par->color_trc != AVCOL_TRC_UNSPECIFIED &&
822  par->color_trc < AVCOL_TRC_NB) {
824  par->color_trc);
825  }
826  if (par->color_space != AVCOL_SPC_UNSPECIFIED &&
827  par->color_space < AVCOL_SPC_NB) {
829  }
831  par->color_primaries < AVCOL_PRI_NB) {
833  }
834  if (par->color_range != AVCOL_RANGE_UNSPECIFIED &&
835  par->color_range < AVCOL_RANGE_NB) {
837  }
840  int xpos, ypos;
841 
842  avcodec_enum_to_chroma_pos(&xpos, &ypos, par->chroma_location);
843  put_ebml_uint(dyn_cp, MATROSKA_ID_VIDEOCOLORCHROMASITINGHORZ, (xpos >> 7) + 1);
844  put_ebml_uint(dyn_cp, MATROSKA_ID_VIDEOCOLORCHROMASITINGVERT, (ypos >> 7) + 1);
845  }
846  if (side_data_size == sizeof(AVMasteringDisplayMetadata)) {
847  ebml_master meta_element = start_ebml_master(
849  const AVMasteringDisplayMetadata *metadata =
850  (const AVMasteringDisplayMetadata*)side_data;
851  if (metadata->has_primaries) {
853  av_q2d(metadata->display_primaries[0][0]));
855  av_q2d(metadata->display_primaries[0][1]));
857  av_q2d(metadata->display_primaries[1][0]));
859  av_q2d(metadata->display_primaries[1][1]));
861  av_q2d(metadata->display_primaries[2][0]));
863  av_q2d(metadata->display_primaries[2][1]));
865  av_q2d(metadata->white_point[0]));
867  av_q2d(metadata->white_point[1]));
868  }
869  if (metadata->has_luminance) {
871  av_q2d(metadata->max_luminance));
873  av_q2d(metadata->min_luminance));
874  }
875  end_ebml_master(dyn_cp, meta_element);
876  }
877 
878  colorinfo_size = avio_close_dyn_buf(dyn_cp, &colorinfo_ptr);
879  if (colorinfo_size) {
881  avio_write(pb, colorinfo_ptr, colorinfo_size);
882  end_ebml_master(pb, colorinfo);
883  }
884  av_free(colorinfo_ptr);
885  return 0;
886 }
887 
889  enum AVFieldOrder field_order)
890 {
891  switch (field_order) {
892  case AV_FIELD_UNKNOWN:
893  break;
897  break;
898  case AV_FIELD_TT:
899  case AV_FIELD_BB:
900  case AV_FIELD_TB:
901  case AV_FIELD_BT:
904  if (mode != MODE_WEBM) {
905  switch (field_order) {
906  case AV_FIELD_TT:
909  break;
910  case AV_FIELD_BB:
913  break;
914  case AV_FIELD_TB:
917  break;
918  case AV_FIELD_BT:
921  break;
922  }
923  }
924  }
925 }
926 
928  AVStream *st, int mode, int *h_width, int *h_height)
929 {
930  int i;
931  int ret = 0;
934 
935  *h_width = 1;
936  *h_height = 1;
937  // convert metadata into proper side data and add it to the stream
938  if ((tag = av_dict_get(st->metadata, "stereo_mode", NULL, 0)) ||
939  (tag = av_dict_get( s->metadata, "stereo_mode", NULL, 0))) {
940  int stereo_mode = atoi(tag->value);
941 
942  for (i=0; i<MATROSKA_VIDEO_STEREOMODE_TYPE_NB; i++)
943  if (!strcmp(tag->value, ff_matroska_video_stereo_mode[i])){
944  stereo_mode = i;
945  break;
946  }
947 
948  if (stereo_mode < MATROSKA_VIDEO_STEREOMODE_TYPE_NB &&
949  stereo_mode != 10 && stereo_mode != 12) {
950  int ret = ff_mkv_stereo3d_conv(st, stereo_mode);
951  if (ret < 0)
952  return ret;
953  }
954  }
955 
956  // iterate to find the stereo3d side data
957  for (i = 0; i < st->nb_side_data; i++) {
958  AVPacketSideData sd = st->side_data[i];
959  if (sd.type == AV_PKT_DATA_STEREO3D) {
960  AVStereo3D *stereo = (AVStereo3D *)sd.data;
961 
962  switch (stereo->type) {
963  case AV_STEREO3D_2D:
965  break;
967  format = (stereo->flags & AV_STEREO3D_FLAG_INVERT)
970  *h_width = 2;
971  break;
974  if (stereo->flags & AV_STEREO3D_FLAG_INVERT)
975  format--;
976  *h_height = 2;
977  break;
980  if (stereo->flags & AV_STEREO3D_FLAG_INVERT)
981  format--;
982  break;
983  case AV_STEREO3D_LINES:
985  if (stereo->flags & AV_STEREO3D_FLAG_INVERT)
986  format--;
987  *h_height = 2;
988  break;
989  case AV_STEREO3D_COLUMNS:
991  if (stereo->flags & AV_STEREO3D_FLAG_INVERT)
992  format--;
993  *h_width = 2;
994  break;
997  if (stereo->flags & AV_STEREO3D_FLAG_INVERT)
998  format++;
999  break;
1000  }
1001  break;
1002  }
1003  }
1004 
1005  if (format == MATROSKA_VIDEO_STEREOMODE_TYPE_NB)
1006  return ret;
1007 
1008  // if webm, do not write unsupported modes
1009  if ((mode == MODE_WEBM &&
1012  || format >= MATROSKA_VIDEO_STEREOMODE_TYPE_NB) {
1013  av_log(s, AV_LOG_ERROR,
1014  "The specified stereo mode is not valid.\n");
1016  return AVERROR(EINVAL);
1017  }
1018 
1019  // write StereoMode if format is valid
1021 
1022  return ret;
1023 }
1024 
1026  int i, AVIOContext *pb, int default_stream_exists)
1027 {
1028  AVStream *st = s->streams[i];
1029  AVCodecParameters *par = st->codecpar;
1030  ebml_master subinfo, track;
1031  int native_id = 0;
1032  int qt_id = 0;
1034  int sample_rate = par->sample_rate;
1035  int output_sample_rate = 0;
1036  int display_width_div = 1;
1037  int display_height_div = 1;
1038  int j, ret;
1040 
1041  if (par->codec_type == AVMEDIA_TYPE_ATTACHMENT) {
1042  mkv->have_attachments = 1;
1043  return 0;
1044  }
1045 
1046  if (par->codec_type == AVMEDIA_TYPE_AUDIO) {
1047  if (!bit_depth && par->codec_id != AV_CODEC_ID_ADPCM_G726) {
1048  if (par->bits_per_raw_sample)
1049  bit_depth = par->bits_per_raw_sample;
1050  else
1051  bit_depth = av_get_bytes_per_sample(par->format) << 3;
1052  }
1053  if (!bit_depth)
1054  bit_depth = par->bits_per_coded_sample;
1055  }
1056 
1057  if (par->codec_id == AV_CODEC_ID_AAC) {
1058  ret = get_aac_sample_rates(s, par, &sample_rate, &output_sample_rate);
1059  if (ret < 0)
1060  return ret;
1061  }
1062 
1063  track = start_ebml_master(pb, MATROSKA_ID_TRACKENTRY, 0);
1065  mkv->is_dash ? mkv->dash_track_number : i + 1);
1067  mkv->is_dash ? mkv->dash_track_number : i + 1);
1068  put_ebml_uint (pb, MATROSKA_ID_TRACKFLAGLACING , 0); // no lacing (yet)
1069 
1070  if ((tag = av_dict_get(st->metadata, "title", NULL, 0)))
1072  tag = av_dict_get(st->metadata, "language", NULL, 0);
1073  if (mkv->mode != MODE_WEBM || par->codec_id != AV_CODEC_ID_WEBVTT) {
1074  put_ebml_string(pb, MATROSKA_ID_TRACKLANGUAGE, tag && tag->value ? tag->value:"und");
1075  } else if (tag && tag->value) {
1077  }
1078 
1079  // The default value for TRACKFLAGDEFAULT is 1, so add element
1080  // if we need to clear it.
1081  if (default_stream_exists && !(st->disposition & AV_DISPOSITION_DEFAULT))
1083 
1086 
1087  if (mkv->mode == MODE_WEBM && par->codec_id == AV_CODEC_ID_WEBVTT) {
1088  const char *codec_id;
1090  codec_id = "D_WEBVTT/CAPTIONS";
1091  native_id = MATROSKA_TRACK_TYPE_SUBTITLE;
1092  } else if (st->disposition & AV_DISPOSITION_DESCRIPTIONS) {
1093  codec_id = "D_WEBVTT/DESCRIPTIONS";
1094  native_id = MATROSKA_TRACK_TYPE_METADATA;
1095  } else if (st->disposition & AV_DISPOSITION_METADATA) {
1096  codec_id = "D_WEBVTT/METADATA";
1097  native_id = MATROSKA_TRACK_TYPE_METADATA;
1098  } else {
1099  codec_id = "D_WEBVTT/SUBTITLES";
1100  native_id = MATROSKA_TRACK_TYPE_SUBTITLE;
1101  }
1102  put_ebml_string(pb, MATROSKA_ID_CODECID, codec_id);
1103  } else {
1104  // look for a codec ID string specific to mkv to use,
1105  // if none are found, use AVI codes
1106  for (j = 0; ff_mkv_codec_tags[j].id != AV_CODEC_ID_NONE; j++) {
1107  if (ff_mkv_codec_tags[j].id == par->codec_id) {
1109  native_id = 1;
1110  break;
1111  }
1112  }
1113  if (par->codec_id == AV_CODEC_ID_RAWVIDEO && !par->codec_tag) {
1114  if (mkv->allow_raw_vfw) {
1115  native_id = 0;
1116  } else {
1117  av_log(s, AV_LOG_ERROR, "Raw RGB is not supported Natively in Matroska, you can use AVI or NUT or\n"
1118  "If you would like to store it anyway using VFW mode, enable allow_raw_vfw (-allow_raw_vfw 1)\n");
1119  return AVERROR(EINVAL);
1120  }
1121  }
1122  }
1123 
1124  if (par->codec_type == AVMEDIA_TYPE_AUDIO && par->initial_padding && par->codec_id == AV_CODEC_ID_OPUS) {
1125  int64_t codecdelay = av_rescale_q(par->initial_padding,
1126  (AVRational){ 1, 48000 },
1127  (AVRational){ 1, 1000000000 });
1128  if (codecdelay < 0) {
1129  av_log(s, AV_LOG_ERROR, "Initial padding is invalid\n");
1130  return AVERROR(EINVAL);
1131  }
1132 // mkv->tracks[i].ts_offset = av_rescale_q(par->initial_padding,
1133 // (AVRational){ 1, par->sample_rate },
1134 // st->time_base);
1135 
1136  put_ebml_uint(pb, MATROSKA_ID_CODECDELAY, codecdelay);
1137  }
1138  if (par->codec_id == AV_CODEC_ID_OPUS) {
1140  }
1141 
1142  if (mkv->mode == MODE_WEBM && !(par->codec_id == AV_CODEC_ID_VP8 ||
1143  par->codec_id == AV_CODEC_ID_VP9 ||
1144  par->codec_id == AV_CODEC_ID_OPUS ||
1145  par->codec_id == AV_CODEC_ID_VORBIS ||
1146  par->codec_id == AV_CODEC_ID_WEBVTT)) {
1148  "Only VP8 or VP9 video and Vorbis or Opus audio and WebVTT subtitles are supported for WebM.\n");
1149  return AVERROR(EINVAL);
1150  }
1151 
1152  switch (par->codec_type) {
1153  case AVMEDIA_TYPE_VIDEO:
1154  mkv->have_video = 1;
1156 
1157  if( st->avg_frame_rate.num > 0 && st->avg_frame_rate.den > 0
1158  && av_cmp_q(av_inv_q(st->avg_frame_rate), st->time_base) > 0)
1159  put_ebml_uint(pb, MATROSKA_ID_TRACKDEFAULTDURATION, 1000000000LL * st->avg_frame_rate.den / st->avg_frame_rate.num);
1160  else
1161  put_ebml_uint(pb, MATROSKA_ID_TRACKDEFAULTDURATION, 1000000000LL * st->time_base.num / st->time_base.den);
1162 
1163  if (!native_id &&
1164  ff_codec_get_tag(ff_codec_movvideo_tags, par->codec_id) &&
1165  ((!ff_codec_get_tag(ff_codec_bmp_tags, par->codec_id) && par->codec_id != AV_CODEC_ID_RAWVIDEO) ||
1166  par->codec_id == AV_CODEC_ID_SVQ1 ||
1167  par->codec_id == AV_CODEC_ID_SVQ3 ||
1168  par->codec_id == AV_CODEC_ID_CINEPAK))
1169  qt_id = 1;
1170 
1171  if (qt_id)
1172  put_ebml_string(pb, MATROSKA_ID_CODECID, "V_QUICKTIME");
1173  else if (!native_id) {
1174  // if there is no mkv-specific codec ID, use VFW mode
1175  put_ebml_string(pb, MATROSKA_ID_CODECID, "V_MS/VFW/FOURCC");
1176  mkv->tracks[i].write_dts = 1;
1177  s->internal->avoid_negative_ts_use_pts = 0;
1178  }
1179 
1180  subinfo = start_ebml_master(pb, MATROSKA_ID_TRACKVIDEO, 0);
1181 
1182  put_ebml_uint (pb, MATROSKA_ID_VIDEOPIXELWIDTH , par->width);
1183  put_ebml_uint (pb, MATROSKA_ID_VIDEOPIXELHEIGHT, par->height);
1184 
1185  mkv_write_field_order(pb, mkv->mode, par->field_order);
1186 
1187  // check both side data and metadata for stereo information,
1188  // write the result to the bitstream if any is found
1189  ret = mkv_write_stereo_mode(s, pb, st, mkv->mode,
1190  &display_width_div,
1191  &display_height_div);
1192  if (ret < 0)
1193  return ret;
1194 
1195  if (((tag = av_dict_get(st->metadata, "alpha_mode", NULL, 0)) && atoi(tag->value)) ||
1196  ((tag = av_dict_get( s->metadata, "alpha_mode", NULL, 0)) && atoi(tag->value)) ||
1197  (par->format == AV_PIX_FMT_YUVA420P)) {
1199  }
1200 
1201  // write DisplayWidth and DisplayHeight, they contain the size of
1202  // a single source view and/or the display aspect ratio
1203  if (st->sample_aspect_ratio.num) {
1204  int64_t d_width = av_rescale(par->width, st->sample_aspect_ratio.num, st->sample_aspect_ratio.den);
1205  if (d_width > INT_MAX) {
1206  av_log(s, AV_LOG_ERROR, "Overflow in display width\n");
1207  return AVERROR(EINVAL);
1208  }
1209  if (d_width != par->width || display_width_div != 1 || display_height_div != 1) {
1210  if (mkv->mode == MODE_WEBM || display_width_div != 1 || display_height_div != 1) {
1211  put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYWIDTH , d_width / display_width_div);
1212  put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYHEIGHT, par->height / display_height_div);
1213  } else {
1214  AVRational display_aspect_ratio;
1215  av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
1216  par->width * (int64_t)st->sample_aspect_ratio.num,
1217  par->height * (int64_t)st->sample_aspect_ratio.den,
1218  1024 * 1024);
1219  put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYWIDTH, display_aspect_ratio.num);
1220  put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYHEIGHT, display_aspect_ratio.den);
1222  }
1223  }
1224  } else if (display_width_div != 1 || display_height_div != 1) {
1225  put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYWIDTH , par->width / display_width_div);
1226  put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYHEIGHT, par->height / display_height_div);
1227  } else
1229 
1230  if (par->codec_id == AV_CODEC_ID_RAWVIDEO) {
1231  uint32_t color_space = av_le2ne32(par->codec_tag);
1232  put_ebml_binary(pb, MATROSKA_ID_VIDEOCOLORSPACE, &color_space, sizeof(color_space));
1233  }
1234  if (s->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
1235  ret = mkv_write_video_color(pb, par, st);
1236  if (ret < 0)
1237  return ret;
1238  }
1239  end_ebml_master(pb, subinfo);
1240  break;
1241 
1242  case AVMEDIA_TYPE_AUDIO:
1244 
1245  if (!native_id)
1246  // no mkv-specific ID, use ACM mode
1247  put_ebml_string(pb, MATROSKA_ID_CODECID, "A_MS/ACM");
1248 
1249  subinfo = start_ebml_master(pb, MATROSKA_ID_TRACKAUDIO, 0);
1250  put_ebml_uint (pb, MATROSKA_ID_AUDIOCHANNELS , par->channels);
1252  if (output_sample_rate)
1253  put_ebml_float(pb, MATROSKA_ID_AUDIOOUTSAMPLINGFREQ, output_sample_rate);
1254  if (bit_depth)
1256  end_ebml_master(pb, subinfo);
1257  break;
1258 
1259  case AVMEDIA_TYPE_SUBTITLE:
1260  if (!native_id) {
1261  av_log(s, AV_LOG_ERROR, "Subtitle codec %d is not supported.\n", par->codec_id);
1262  return AVERROR(ENOSYS);
1263  }
1264 
1265  if (mkv->mode != MODE_WEBM || par->codec_id != AV_CODEC_ID_WEBVTT)
1266  native_id = MATROSKA_TRACK_TYPE_SUBTITLE;
1267 
1268  put_ebml_uint(pb, MATROSKA_ID_TRACKTYPE, native_id);
1269  break;
1270  default:
1271  av_log(s, AV_LOG_ERROR, "Only audio, video, and subtitles are supported for Matroska.\n");
1272  return AVERROR(EINVAL);
1273  }
1274 
1275  if (mkv->mode != MODE_WEBM || par->codec_id != AV_CODEC_ID_WEBVTT) {
1276  mkv->tracks[i].codecpriv_offset = avio_tell(pb);
1277  ret = mkv_write_codecprivate(s, pb, par, native_id, qt_id);
1278  if (ret < 0)
1279  return ret;
1280  }
1281 
1282  end_ebml_master(pb, track);
1283 
1284  return 0;
1285 }
1286 
1288 {
1289  MatroskaMuxContext *mkv = s->priv_data;
1290  AVIOContext *pb = s->pb;
1291  int i, ret, default_stream_exists = 0;
1292 
1294  if (ret < 0)
1295  return ret;
1296 
1297  ret = start_ebml_master_crc32(pb, &mkv->tracks_bc, mkv, &mkv->tracks_master, MATROSKA_ID_TRACKS, 0);
1298  if (ret < 0)
1299  return ret;
1300 
1301  for (i = 0; i < s->nb_streams; i++) {
1302  AVStream *st = s->streams[i];
1303  default_stream_exists |= st->disposition & AV_DISPOSITION_DEFAULT;
1304  }
1305  for (i = 0; i < s->nb_streams; i++) {
1306  ret = mkv_write_track(s, mkv, i, mkv->tracks_bc, default_stream_exists);
1307  if (ret < 0)
1308  return ret;
1309  }
1310 
1311  if (pb->seekable && !mkv->is_live)
1312  put_ebml_void(pb, avio_tell(mkv->tracks_bc));
1313  else
1314  end_ebml_master_crc32(pb, &mkv->tracks_bc, mkv, mkv->tracks_master);
1315 
1316  return 0;
1317 }
1318 
1320 {
1321  MatroskaMuxContext *mkv = s->priv_data;
1322  AVIOContext *dyn_cp, *pb = s->pb;
1323  ebml_master chapters, editionentry;
1324  AVRational scale = {1, 1E9};
1325  int i, ret;
1326 
1327  if (!s->nb_chapters || mkv->wrote_chapters)
1328  return 0;
1329 
1331  if (ret < 0) return ret;
1332 
1333  ret = start_ebml_master_crc32(pb, &dyn_cp, mkv, &chapters, MATROSKA_ID_CHAPTERS, 0);
1334  if (ret < 0) return ret;
1335 
1336  editionentry = start_ebml_master(dyn_cp, MATROSKA_ID_EDITIONENTRY, 0);
1339  for (i = 0; i < s->nb_chapters; i++) {
1340  ebml_master chapteratom, chapterdisplay;
1341  AVChapter *c = s->chapters[i];
1342  int64_t chapterstart = av_rescale_q(c->start, c->time_base, scale);
1343  int64_t chapterend = av_rescale_q(c->end, c->time_base, scale);
1344  AVDictionaryEntry *t = NULL;
1345  if (chapterstart < 0 || chapterstart > chapterend || chapterend < 0) {
1346  av_log(s, AV_LOG_ERROR,
1347  "Invalid chapter start (%"PRId64") or end (%"PRId64").\n",
1348  chapterstart, chapterend);
1349  return AVERROR_INVALIDDATA;
1350  }
1351 
1352  chapteratom = start_ebml_master(dyn_cp, MATROSKA_ID_CHAPTERATOM, 0);
1354  put_ebml_uint(dyn_cp, MATROSKA_ID_CHAPTERTIMESTART, chapterstart);
1355  put_ebml_uint(dyn_cp, MATROSKA_ID_CHAPTERTIMEEND, chapterend);
1358  if ((t = av_dict_get(c->metadata, "title", NULL, 0))) {
1359  chapterdisplay = start_ebml_master(dyn_cp, MATROSKA_ID_CHAPTERDISPLAY, 0);
1361  put_ebml_string(dyn_cp, MATROSKA_ID_CHAPLANG , "und");
1362  end_ebml_master(dyn_cp, chapterdisplay);
1363  }
1364  end_ebml_master(dyn_cp, chapteratom);
1365  }
1366  end_ebml_master(dyn_cp, editionentry);
1367  end_ebml_master_crc32(pb, &dyn_cp, mkv, chapters);
1368 
1369  mkv->wrote_chapters = 1;
1370  return 0;
1371 }
1372 
1374 {
1375  uint8_t *key = av_strdup(t->key);
1376  uint8_t *p = key;
1377  const uint8_t *lang = NULL;
1378  ebml_master tag;
1379 
1380  if (!key)
1381  return AVERROR(ENOMEM);
1382 
1383  if ((p = strrchr(p, '-')) &&
1384  (lang = ff_convert_lang_to(p + 1, AV_LANG_ISO639_2_BIBL)))
1385  *p = 0;
1386 
1387  p = key;
1388  while (*p) {
1389  if (*p == ' ')
1390  *p = '_';
1391  else if (*p >= 'a' && *p <= 'z')
1392  *p -= 'a' - 'A';
1393  p++;
1394  }
1395 
1398  if (lang)
1401  end_ebml_master(pb, tag);
1402 
1403  av_freep(&key);
1404  return 0;
1405 }
1406 
1408  unsigned int elementid, unsigned int uid,
1409  ebml_master *tags, ebml_master* tag)
1410 {
1411  AVIOContext *pb;
1412  MatroskaMuxContext *mkv = s->priv_data;
1413  ebml_master targets;
1414  int ret;
1415 
1416  if (!tags->pos) {
1418  if (ret < 0) return ret;
1419 
1420  start_ebml_master_crc32(s->pb, &mkv->tags_bc, mkv, tags, MATROSKA_ID_TAGS, 0);
1421  }
1422  pb = mkv->tags_bc;
1423 
1424  *tag = start_ebml_master(pb, MATROSKA_ID_TAG, 0);
1425  targets = start_ebml_master(pb, MATROSKA_ID_TAGTARGETS, 0);
1426  if (elementid)
1427  put_ebml_uint(pb, elementid, uid);
1428  end_ebml_master(pb, targets);
1429  return 0;
1430 }
1431 
1432 static int mkv_check_tag_name(const char *name, unsigned int elementid)
1433 {
1434  return av_strcasecmp(name, "title") &&
1435  av_strcasecmp(name, "stereo_mode") &&
1436  av_strcasecmp(name, "creation_time") &&
1437  av_strcasecmp(name, "encoding_tool") &&
1438  av_strcasecmp(name, "duration") &&
1439  (elementid != MATROSKA_ID_TAGTARGETS_TRACKUID ||
1440  av_strcasecmp(name, "language")) &&
1441  (elementid != MATROSKA_ID_TAGTARGETS_ATTACHUID ||
1442  (av_strcasecmp(name, "filename") &&
1443  av_strcasecmp(name, "mimetype")));
1444 }
1445 
1446 static int mkv_write_tag(AVFormatContext *s, AVDictionary *m, unsigned int elementid,
1447  unsigned int uid, ebml_master *tags)
1448 {
1449  MatroskaMuxContext *mkv = s->priv_data;
1450  ebml_master tag;
1451  int ret;
1452  AVDictionaryEntry *t = NULL;
1453 
1454  ret = mkv_write_tag_targets(s, elementid, uid, tags, &tag);
1455  if (ret < 0)
1456  return ret;
1457 
1458  while ((t = av_dict_get(m, "", t, AV_DICT_IGNORE_SUFFIX))) {
1459  if (mkv_check_tag_name(t->key, elementid)) {
1460  ret = mkv_write_simpletag(mkv->tags_bc, t);
1461  if (ret < 0)
1462  return ret;
1463  }
1464  }
1465 
1466  end_ebml_master(mkv->tags_bc, tag);
1467  return 0;
1468 }
1469 
1470 static int mkv_check_tag(AVDictionary *m, unsigned int elementid)
1471 {
1472  AVDictionaryEntry *t = NULL;
1473 
1474  while ((t = av_dict_get(m, "", t, AV_DICT_IGNORE_SUFFIX)))
1475  if (mkv_check_tag_name(t->key, elementid))
1476  return 1;
1477 
1478  return 0;
1479 }
1480 
1482 {
1483  MatroskaMuxContext *mkv = s->priv_data;
1484  int i, ret;
1485 
1487 
1488  if (mkv_check_tag(s->metadata, 0)) {
1489  ret = mkv_write_tag(s, s->metadata, 0, 0, &mkv->tags);
1490  if (ret < 0) return ret;
1491  }
1492 
1493  for (i = 0; i < s->nb_streams; i++) {
1494  AVStream *st = s->streams[i];
1495 
1497  continue;
1498 
1500  continue;
1501 
1502  ret = mkv_write_tag(s, st->metadata, MATROSKA_ID_TAGTARGETS_TRACKUID, i + 1, &mkv->tags);
1503  if (ret < 0) return ret;
1504  }
1505 
1506  if (s->pb->seekable && !mkv->is_live) {
1507  for (i = 0; i < s->nb_streams; i++) {
1508  AVIOContext *pb;
1509  AVStream *st = s->streams[i];
1510  ebml_master tag_target;
1511  ebml_master tag;
1512 
1514  continue;
1515 
1516  mkv_write_tag_targets(s, MATROSKA_ID_TAGTARGETS_TRACKUID, i + 1, &mkv->tags, &tag_target);
1517  pb = mkv->tags_bc;
1518 
1520  put_ebml_string(pb, MATROSKA_ID_TAGNAME, "DURATION");
1521  mkv->stream_duration_offsets[i] = avio_tell(pb);
1522 
1523  // Reserve space to write duration as a 20-byte string.
1524  // 2 (ebml id) + 1 (data size) + 20 (data)
1525  put_ebml_void(pb, 23);
1526  end_ebml_master(pb, tag);
1527  end_ebml_master(pb, tag_target);
1528  }
1529  }
1530 
1531  for (i = 0; i < s->nb_chapters; i++) {
1532  AVChapter *ch = s->chapters[i];
1533 
1535  continue;
1536 
1538  if (ret < 0) return ret;
1539  }
1540 
1541  if (mkv->have_attachments) {
1542  for (i = 0; i < mkv->attachments->num_entries; i++) {
1543  mkv_attachment *attachment = &mkv->attachments->entries[i];
1544  AVStream *st = s->streams[attachment->stream_idx];
1545 
1547  continue;
1548 
1549  ret = mkv_write_tag(s, st->metadata, MATROSKA_ID_TAGTARGETS_ATTACHUID, attachment->fileuid, &mkv->tags);
1550  if (ret < 0)
1551  return ret;
1552  }
1553  }
1554 
1555  if (mkv->tags.pos) {
1556  if (s->pb->seekable && !mkv->is_live)
1557  put_ebml_void(s->pb, avio_tell(mkv->tags_bc));
1558  else
1559  end_ebml_master_crc32(s->pb, &mkv->tags_bc, mkv, mkv->tags);
1560  }
1561  return 0;
1562 }
1563 
1565 {
1566  MatroskaMuxContext *mkv = s->priv_data;
1567  AVIOContext *dyn_cp, *pb = s->pb;
1568  ebml_master attachments;
1569  AVLFG c;
1570  int i, ret;
1571 
1572  if (!mkv->have_attachments)
1573  return 0;
1574 
1575  mkv->attachments = av_mallocz(sizeof(*mkv->attachments));
1576  if (!mkv->attachments)
1577  return AVERROR(ENOMEM);
1578 
1580 
1582  if (ret < 0) return ret;
1583 
1584  ret = start_ebml_master_crc32(pb, &dyn_cp, mkv, &attachments, MATROSKA_ID_ATTACHMENTS, 0);
1585  if (ret < 0) return ret;
1586 
1587  for (i = 0; i < s->nb_streams; i++) {
1588  AVStream *st = s->streams[i];
1589  ebml_master attached_file;
1590  mkv_attachment *attachment = mkv->attachments->entries;
1591  AVDictionaryEntry *t;
1592  const char *mimetype = NULL;
1593  uint32_t fileuid;
1594 
1596  continue;
1597 
1598  attachment = av_realloc_array(attachment, mkv->attachments->num_entries + 1, sizeof(mkv_attachment));
1599  if (!attachment)
1600  return AVERROR(ENOMEM);
1601  mkv->attachments->entries = attachment;
1602 
1603  attached_file = start_ebml_master(dyn_cp, MATROSKA_ID_ATTACHEDFILE, 0);
1604 
1605  if (t = av_dict_get(st->metadata, "title", NULL, 0))
1607  if (!(t = av_dict_get(st->metadata, "filename", NULL, 0))) {
1608  av_log(s, AV_LOG_ERROR, "Attachment stream %d has no filename tag.\n", i);
1609  return AVERROR(EINVAL);
1610  }
1612  if (t = av_dict_get(st->metadata, "mimetype", NULL, 0))
1613  mimetype = t->value;
1614  else if (st->codecpar->codec_id != AV_CODEC_ID_NONE ) {
1615  int i;
1616  for (i = 0; ff_mkv_mime_tags[i].id != AV_CODEC_ID_NONE; i++)
1617  if (ff_mkv_mime_tags[i].id == st->codecpar->codec_id) {
1618  mimetype = ff_mkv_mime_tags[i].str;
1619  break;
1620  }
1621  for (i = 0; ff_mkv_image_mime_tags[i].id != AV_CODEC_ID_NONE; i++)
1622  if (ff_mkv_image_mime_tags[i].id == st->codecpar->codec_id) {
1623  mimetype = ff_mkv_image_mime_tags[i].str;
1624  break;
1625  }
1626  }
1627  if (!mimetype) {
1628  av_log(s, AV_LOG_ERROR, "Attachment stream %d has no mimetype tag and "
1629  "it cannot be deduced from the codec id.\n", i);
1630  return AVERROR(EINVAL);
1631  }
1632 
1633  if (s->flags & AVFMT_FLAG_BITEXACT) {
1634  struct AVSHA *sha = av_sha_alloc();
1635  uint8_t digest[20];
1636  if (!sha)
1637  return AVERROR(ENOMEM);
1638  av_sha_init(sha, 160);
1640  av_sha_final(sha, digest);
1641  av_free(sha);
1642  fileuid = AV_RL32(digest);
1643  } else {
1644  fileuid = av_lfg_get(&c);
1645  }
1646  av_log(s, AV_LOG_VERBOSE, "Using %.8"PRIx32" for attachment %d\n",
1647  fileuid, mkv->attachments->num_entries);
1648 
1649  put_ebml_string(dyn_cp, MATROSKA_ID_FILEMIMETYPE, mimetype);
1651  put_ebml_uint(dyn_cp, MATROSKA_ID_FILEUID, fileuid);
1652  end_ebml_master(dyn_cp, attached_file);
1653 
1655  mkv->attachments->entries[mkv->attachments->num_entries++].fileuid = fileuid;
1656  }
1657  end_ebml_master_crc32(pb, &dyn_cp, mkv, attachments);
1658 
1659  return 0;
1660 }
1661 
1663 {
1664  int i = 0;
1665  int64_t max = 0;
1666  int64_t us;
1667 
1668  AVDictionaryEntry *explicitDuration = av_dict_get(s->metadata, "DURATION", NULL, 0);
1669  if (explicitDuration && (av_parse_time(&us, explicitDuration->value, 1) == 0) && us > 0) {
1670  av_log(s, AV_LOG_DEBUG, "get_metadata_duration found duration in context metadata: %" PRId64 "\n", us);
1671  return us;
1672  }
1673 
1674  for (i = 0; i < s->nb_streams; i++) {
1675  int64_t us;
1676  AVDictionaryEntry *duration = av_dict_get(s->streams[i]->metadata, "DURATION", NULL, 0);
1677 
1678  if (duration && (av_parse_time(&us, duration->value, 1) == 0))
1679  max = FFMAX(max, us);
1680  }
1681 
1682  av_log(s, AV_LOG_DEBUG, "get_metadata_duration returned: %" PRId64 "\n", max);
1683  return max;
1684 }
1685 
1687 {
1688  MatroskaMuxContext *mkv = s->priv_data;
1689  AVIOContext *pb = s->pb;
1692  int ret, i, version = 2;
1693  int64_t creation_time;
1694 
1695  if (!strcmp(s->oformat->name, "webm"))
1696  mkv->mode = MODE_WEBM;
1697  else
1698  mkv->mode = MODE_MATROSKAv2;
1699 
1700  if (mkv->mode != MODE_WEBM ||
1701  av_dict_get(s->metadata, "stereo_mode", NULL, 0) ||
1702  av_dict_get(s->metadata, "alpha_mode", NULL, 0))
1703  version = 4;
1704 
1705  for (i = 0; i < s->nb_streams; i++) {
1706  if (s->streams[i]->codecpar->codec_id == AV_CODEC_ID_ATRAC3 ||
1712  av_log(s, AV_LOG_ERROR,
1713  "The Matroska muxer does not yet support muxing %s\n",
1715  return AVERROR_PATCHWELCOME;
1716  }
1717  if (s->streams[i]->codecpar->codec_id == AV_CODEC_ID_OPUS ||
1718  av_dict_get(s->streams[i]->metadata, "stereo_mode", NULL, 0) ||
1719  av_dict_get(s->streams[i]->metadata, "alpha_mode", NULL, 0))
1720  version = 4;
1721  }
1722 
1723  mkv->tracks = av_mallocz_array(s->nb_streams, sizeof(*mkv->tracks));
1724  if (!mkv->tracks) {
1725  ret = AVERROR(ENOMEM);
1726  goto fail;
1727  }
1728  ebml_header = start_ebml_master(pb, EBML_ID_HEADER, 0);
1734  put_ebml_uint (pb, EBML_ID_DOCTYPEVERSION , version);
1736  end_ebml_master(pb, ebml_header);
1737 
1739  mkv->segment_offset = avio_tell(pb);
1740 
1741  // we write 2 seek heads - one at the end of the file to point to each
1742  // cluster, and one at the beginning to point to all other level one
1743  // elements (including the seek head at the end of the file), which
1744  // isn't more than 10 elements if we only write one of each other
1745  // currently defined level 1 element
1746  mkv->main_seekhead = mkv_start_seekhead(pb, mkv->segment_offset, 10);
1747  if (!mkv->main_seekhead) {
1748  ret = AVERROR(ENOMEM);
1749  goto fail;
1750  }
1751 
1753  if (ret < 0) goto fail;
1754 
1755  ret = start_ebml_master_crc32(pb, &mkv->info_bc, mkv, &mkv->info, MATROSKA_ID_INFO, 0);
1756  if (ret < 0)
1757  return ret;
1758  pb = mkv->info_bc;
1759 
1761  if ((tag = av_dict_get(s->metadata, "title", NULL, 0)))
1763  if (!(s->flags & AVFMT_FLAG_BITEXACT)) {
1765  if ((tag = av_dict_get(s->metadata, "encoding_tool", NULL, 0)))
1767  else
1769 
1770  if (mkv->mode != MODE_WEBM) {
1771  uint32_t segment_uid[4];
1772  AVLFG lfg;
1773 
1775 
1776  for (i = 0; i < 4; i++)
1777  segment_uid[i] = av_lfg_get(&lfg);
1778 
1779  put_ebml_binary(pb, MATROSKA_ID_SEGMENTUID, segment_uid, 16);
1780  }
1781  } else {
1782  const char *ident = "Lavf";
1785  }
1786 
1787  if (ff_parse_creation_time_metadata(s, &creation_time, 0) > 0) {
1788  // Adjust time so it's relative to 2001-01-01 and convert to nanoseconds.
1789  int64_t date_utc = (creation_time - 978307200000000LL) * 1000;
1790  uint8_t date_utc_buf[8];
1791  AV_WB64(date_utc_buf, date_utc);
1792  put_ebml_binary(pb, MATROSKA_ID_DATEUTC, date_utc_buf, 8);
1793  }
1794 
1795  // reserve space for the duration
1796  mkv->duration = 0;
1797  mkv->duration_offset = avio_tell(pb);
1798  if (!mkv->is_live) {
1799  int64_t metadata_duration = get_metadata_duration(s);
1800 
1801  if (s->duration > 0) {
1802  int64_t scaledDuration = av_rescale(s->duration, 1000, AV_TIME_BASE);
1803  put_ebml_float(pb, MATROSKA_ID_DURATION, scaledDuration);
1804  av_log(s, AV_LOG_DEBUG, "Write early duration from recording time = %" PRIu64 "\n", scaledDuration);
1805  } else if (metadata_duration > 0) {
1806  int64_t scaledDuration = av_rescale(metadata_duration, 1000, AV_TIME_BASE);
1807  put_ebml_float(pb, MATROSKA_ID_DURATION, scaledDuration);
1808  av_log(s, AV_LOG_DEBUG, "Write early duration from metadata = %" PRIu64 "\n", scaledDuration);
1809  } else {
1810  put_ebml_void(pb, 11); // assumes double-precision float to be written
1811  }
1812  }
1813  if (s->pb->seekable && !mkv->is_live)
1814  put_ebml_void(s->pb, avio_tell(pb));
1815  else
1816  end_ebml_master_crc32(s->pb, &mkv->info_bc, mkv, mkv->info);
1817  pb = s->pb;
1818 
1819  // initialize stream_duration fields
1820  mkv->stream_durations = av_mallocz(s->nb_streams * sizeof(int64_t));
1821  mkv->stream_duration_offsets = av_mallocz(s->nb_streams * sizeof(int64_t));
1822 
1823  ret = mkv_write_tracks(s);
1824  if (ret < 0)
1825  goto fail;
1826 
1827  for (i = 0; i < s->nb_chapters; i++)
1828  mkv->chapter_id_offset = FFMAX(mkv->chapter_id_offset, 1LL - s->chapters[i]->id);
1829 
1830  if (mkv->mode != MODE_WEBM) {
1831  ret = mkv_write_chapters(s);
1832  if (ret < 0)
1833  goto fail;
1834 
1835  ret = mkv_write_attachments(s);
1836  if (ret < 0)
1837  goto fail;
1838 
1839  ret = mkv_write_tags(s);
1840  if (ret < 0)
1841  goto fail;
1842  }
1843 
1844  if (!s->pb->seekable && !mkv->is_live)
1845  mkv_write_seekhead(pb, mkv);
1846 
1847  mkv->cues = mkv_start_cues(mkv->segment_offset);
1848  if (!mkv->cues) {
1849  ret = AVERROR(ENOMEM);
1850  goto fail;
1851  }
1852  if (pb->seekable && mkv->reserve_cues_space) {
1853  mkv->cues_pos = avio_tell(pb);
1855  }
1856 
1858  mkv->cur_audio_pkt.size = 0;
1859  mkv->cluster_pos = -1;
1860 
1861  avio_flush(pb);
1862 
1863  // start a new cluster every 5 MB or 5 sec, or 32k / 1 sec for streaming or
1864  // after 4k and on a keyframe
1865  if (pb->seekable) {
1866  if (mkv->cluster_time_limit < 0)
1867  mkv->cluster_time_limit = 5000;
1868  if (mkv->cluster_size_limit < 0)
1869  mkv->cluster_size_limit = 5 * 1024 * 1024;
1870  } else {
1871  if (mkv->cluster_time_limit < 0)
1872  mkv->cluster_time_limit = 1000;
1873  if (mkv->cluster_size_limit < 0)
1874  mkv->cluster_size_limit = 32 * 1024;
1875  }
1876 
1877  return 0;
1878 fail:
1879  mkv_free(mkv);
1880  return ret;
1881 }
1882 
1883 static int mkv_blockgroup_size(int pkt_size)
1884 {
1885  int size = pkt_size + 4;
1886  size += ebml_num_size(size);
1887  size += 2; // EBML ID for block and block duration
1888  size += 8; // max size of block duration
1889  size += ebml_num_size(size);
1890  size += 1; // blockgroup EBML ID
1891  return size;
1892 }
1893 
1894 static int mkv_strip_wavpack(const uint8_t *src, uint8_t **pdst, int *size)
1895 {
1896  uint8_t *dst;
1897  int srclen = *size;
1898  int offset = 0;
1899  int ret;
1900 
1901  dst = av_malloc(srclen);
1902  if (!dst)
1903  return AVERROR(ENOMEM);
1904 
1905  while (srclen >= WV_HEADER_SIZE) {
1906  WvHeader header;
1907 
1908  ret = ff_wv_parse_header(&header, src);
1909  if (ret < 0)
1910  goto fail;
1911  src += WV_HEADER_SIZE;
1912  srclen -= WV_HEADER_SIZE;
1913 
1914  if (srclen < header.blocksize) {
1915  ret = AVERROR_INVALIDDATA;
1916  goto fail;
1917  }
1918 
1919  if (header.initial) {
1920  AV_WL32(dst + offset, header.samples);
1921  offset += 4;
1922  }
1923  AV_WL32(dst + offset, header.flags);
1924  AV_WL32(dst + offset + 4, header.crc);
1925  offset += 8;
1926 
1927  if (!(header.initial && header.final)) {
1928  AV_WL32(dst + offset, header.blocksize);
1929  offset += 4;
1930  }
1931 
1932  memcpy(dst + offset, src, header.blocksize);
1933  src += header.blocksize;
1934  srclen -= header.blocksize;
1935  offset += header.blocksize;
1936  }
1937 
1938  *pdst = dst;
1939  *size = offset;
1940 
1941  return 0;
1942 fail:
1943  av_freep(&dst);
1944  return ret;
1945 }
1946 
1948  unsigned int blockid, AVPacket *pkt, int keyframe)
1949 {
1950  MatroskaMuxContext *mkv = s->priv_data;
1952  uint8_t *data = NULL, *side_data = NULL;
1953  int offset = 0, size = pkt->size, side_data_size = 0;
1954  int64_t ts = mkv->tracks[pkt->stream_index].write_dts ? pkt->dts : pkt->pts;
1955  uint64_t additional_id = 0;
1956  int64_t discard_padding = 0;
1957  uint8_t track_number = (mkv->is_dash ? mkv->dash_track_number : (pkt->stream_index + 1));
1958  ebml_master block_group, block_additions, block_more;
1959 
1960  av_log(s, AV_LOG_DEBUG, "Writing block at offset %" PRIu64 ", size %d, "
1961  "pts %" PRId64 ", dts %" PRId64 ", duration %" PRId64 ", keyframe %d\n",
1962  avio_tell(pb), pkt->size, pkt->pts, pkt->dts, pkt->duration,
1963  keyframe != 0);
1964  if (par->codec_id == AV_CODEC_ID_H264 && par->extradata_size > 0 &&
1965  (AV_RB24(par->extradata) == 1 || AV_RB32(par->extradata) == 1))
1966  ff_avc_parse_nal_units_buf(pkt->data, &data, &size);
1967  else if (par->codec_id == AV_CODEC_ID_HEVC && par->extradata_size > 6 &&
1968  (AV_RB24(par->extradata) == 1 || AV_RB32(par->extradata) == 1))
1969  /* extradata is Annex B, assume the bitstream is too and convert it */
1970  ff_hevc_annexb2mp4_buf(pkt->data, &data, &size, 0, NULL);
1971  else if (par->codec_id == AV_CODEC_ID_WAVPACK) {
1972  int ret = mkv_strip_wavpack(pkt->data, &data, &size);
1973  if (ret < 0) {
1974  av_log(s, AV_LOG_ERROR, "Error stripping a WavPack packet.\n");
1975  return;
1976  }
1977  } else
1978  data = pkt->data;
1979 
1980  if (par->codec_id == AV_CODEC_ID_PRORES && size >= 8) {
1981  /* Matroska specification requires to remove the first QuickTime atom
1982  */
1983  size -= 8;
1984  offset = 8;
1985  }
1986 
1987  side_data = av_packet_get_side_data(pkt,
1989  &side_data_size);
1990 
1991  if (side_data && side_data_size >= 10) {
1992  discard_padding = av_rescale_q(AV_RL32(side_data + 4),
1993  (AVRational){1, par->sample_rate},
1994  (AVRational){1, 1000000000});
1995  }
1996 
1997  side_data = av_packet_get_side_data(pkt,
1999  &side_data_size);
2000  if (side_data) {
2001  additional_id = AV_RB64(side_data);
2002  side_data += 8;
2003  side_data_size -= 8;
2004  }
2005 
2006  if ((side_data_size && additional_id == 1) || discard_padding) {
2007  block_group = start_ebml_master(pb, MATROSKA_ID_BLOCKGROUP, 0);
2008  blockid = MATROSKA_ID_BLOCK;
2009  }
2010 
2011  put_ebml_id(pb, blockid);
2012  put_ebml_num(pb, size + 4, 0);
2013  // this assumes stream_index is less than 126
2014  avio_w8(pb, 0x80 | track_number);
2015  avio_wb16(pb, ts - mkv->cluster_pts);
2016  avio_w8(pb, (blockid == MATROSKA_ID_SIMPLEBLOCK && keyframe) ? (1 << 7) : 0);
2017  avio_write(pb, data + offset, size);
2018  if (data != pkt->data)
2019  av_free(data);
2020 
2021  if (blockid == MATROSKA_ID_BLOCK && !keyframe) {
2023  mkv->last_track_timestamp[track_number - 1]);
2024  }
2025  mkv->last_track_timestamp[track_number - 1] = ts - mkv->cluster_pts;
2026 
2027  if (discard_padding) {
2028  put_ebml_sint(pb, MATROSKA_ID_DISCARDPADDING, discard_padding);
2029  }
2030 
2031  if (side_data_size && additional_id == 1) {
2032  block_additions = start_ebml_master(pb, MATROSKA_ID_BLOCKADDITIONS, 0);
2033  block_more = start_ebml_master(pb, MATROSKA_ID_BLOCKMORE, 0);
2036  put_ebml_num(pb, side_data_size, 0);
2037  avio_write(pb, side_data, side_data_size);
2038  end_ebml_master(pb, block_more);
2039  end_ebml_master(pb, block_additions);
2040  }
2041  if ((side_data_size && additional_id == 1) || discard_padding) {
2042  end_ebml_master(pb, block_group);
2043  }
2044 }
2045 
2047 {
2048  MatroskaMuxContext *mkv = s->priv_data;
2049  ebml_master blockgroup;
2050  int id_size, settings_size, size;
2051  uint8_t *id, *settings;
2052  int64_t ts = mkv->tracks[pkt->stream_index].write_dts ? pkt->dts : pkt->pts;
2053  const int flags = 0;
2054 
2055  id_size = 0;
2057  &id_size);
2058 
2059  settings_size = 0;
2061  &settings_size);
2062 
2063  size = id_size + 1 + settings_size + 1 + pkt->size;
2064 
2065  av_log(s, AV_LOG_DEBUG, "Writing block at offset %" PRIu64 ", size %d, "
2066  "pts %" PRId64 ", dts %" PRId64 ", duration %" PRId64 ", flags %d\n",
2067  avio_tell(pb), size, pkt->pts, pkt->dts, pkt->duration, flags);
2068 
2070 
2072  put_ebml_num(pb, size + 4, 0);
2073  avio_w8(pb, 0x80 | (pkt->stream_index + 1)); // this assumes stream_index is less than 126
2074  avio_wb16(pb, ts - mkv->cluster_pts);
2075  avio_w8(pb, flags);
2076  avio_printf(pb, "%.*s\n%.*s\n%.*s", id_size, id, settings_size, settings, pkt->size, pkt->data);
2077 
2079  end_ebml_master(pb, blockgroup);
2080 
2081  return pkt->duration;
2082 }
2083 
2085 {
2086  MatroskaMuxContext *mkv = s->priv_data;
2087 
2088  end_ebml_master_crc32(s->pb, &mkv->dyn_bc, mkv, mkv->cluster);
2089  mkv->cluster_pos = -1;
2090  if (s->pb->seekable)
2091  av_log(s, AV_LOG_DEBUG,
2092  "Starting new cluster at offset %" PRIu64 " bytes, "
2093  "pts %" PRIu64 "dts %" PRIu64 "\n",
2094  avio_tell(s->pb), pkt->pts, pkt->dts);
2095  else
2096  av_log(s, AV_LOG_DEBUG, "Starting new cluster, "
2097  "pts %" PRIu64 "dts %" PRIu64 "\n",
2098  pkt->pts, pkt->dts);
2099  avio_flush(s->pb);
2100 }
2101 
2103 {
2104  MatroskaMuxContext *mkv = s->priv_data;
2105  mkv_track *track = &mkv->tracks[pkt->stream_index];
2107  uint8_t *side_data;
2108  int side_data_size = 0, ret;
2109 
2111  &side_data_size);
2112 
2113  switch (par->codec_id) {
2114  case AV_CODEC_ID_FLAC:
2115  if (side_data_size && s->pb->seekable) {
2116  AVCodecParameters *codecpriv_par;
2117  int64_t curpos;
2118  if (side_data_size != par->extradata_size) {
2119  av_log(s, AV_LOG_ERROR, "Invalid FLAC STREAMINFO metadata for output stream %d\n",
2120  pkt->stream_index);
2121  return AVERROR(EINVAL);
2122  }
2123  codecpriv_par = avcodec_parameters_alloc();
2124  if (!codecpriv_par)
2125  return AVERROR(ENOMEM);
2126  ret = avcodec_parameters_copy(codecpriv_par, par);
2127  if (ret < 0) {
2128  avcodec_parameters_free(&codecpriv_par);
2129  return ret;
2130  }
2131  memcpy(codecpriv_par->extradata, side_data, side_data_size);
2132  curpos = avio_tell(mkv->tracks_bc);
2133  avio_seek(mkv->tracks_bc, track->codecpriv_offset, SEEK_SET);
2134  mkv_write_codecprivate(s, mkv->tracks_bc, codecpriv_par, 1, 0);
2135  avio_seek(mkv->tracks_bc, curpos, SEEK_SET);
2136  avcodec_parameters_free(&codecpriv_par);
2137  }
2138  break;
2139  default:
2140  if (side_data_size)
2141  av_log(s, AV_LOG_DEBUG, "Ignoring new extradata in a packet for stream %d.\n", pkt->stream_index);
2142  break;
2143  }
2144 
2145  return 0;
2146 }
2147 
2149 {
2150  MatroskaMuxContext *mkv = s->priv_data;
2151  AVIOContext *pb = s->pb;
2153  int keyframe = !!(pkt->flags & AV_PKT_FLAG_KEY);
2154  int duration = pkt->duration;
2155  int ret;
2156  int64_t ts = mkv->tracks[pkt->stream_index].write_dts ? pkt->dts : pkt->pts;
2157  int64_t relative_packet_pos;
2158  int dash_tracknum = mkv->is_dash ? mkv->dash_track_number : pkt->stream_index + 1;
2159 
2160  if (ts == AV_NOPTS_VALUE) {
2161  av_log(s, AV_LOG_ERROR, "Can't write packet with unknown timestamp\n");
2162  return AVERROR(EINVAL);
2163  }
2164  ts += mkv->tracks[pkt->stream_index].ts_offset;
2165 
2166  if (mkv->cluster_pos != -1) {
2167  int64_t cluster_time = ts - mkv->cluster_pts + mkv->tracks[pkt->stream_index].ts_offset;
2168  if ((int16_t)cluster_time != cluster_time) {
2169  av_log(s, AV_LOG_WARNING, "Starting new cluster due to timestamp\n");
2170  mkv_start_new_cluster(s, pkt);
2171  }
2172  }
2173 
2174  if (mkv->cluster_pos == -1) {
2175  mkv->cluster_pos = avio_tell(s->pb);
2176  ret = start_ebml_master_crc32(s->pb, &mkv->dyn_bc, mkv, &mkv->cluster, MATROSKA_ID_CLUSTER, 0);
2177  if (ret < 0)
2178  return ret;
2180  mkv->cluster_pts = FFMAX(0, ts);
2181  }
2182  pb = mkv->dyn_bc;
2183 
2184  relative_packet_pos = avio_tell(pb);
2185 
2186  if (par->codec_type != AVMEDIA_TYPE_SUBTITLE) {
2187  mkv_write_block(s, pb, MATROSKA_ID_SIMPLEBLOCK, pkt, keyframe);
2188  if (s->pb->seekable && (par->codec_type == AVMEDIA_TYPE_VIDEO && keyframe || add_cue)) {
2189  ret = mkv_add_cuepoint(mkv->cues, pkt->stream_index, dash_tracknum, ts, mkv->cluster_pos, relative_packet_pos, -1);
2190  if (ret < 0) return ret;
2191  }
2192  } else {
2193  if (par->codec_id == AV_CODEC_ID_WEBVTT) {
2194  duration = mkv_write_vtt_blocks(s, pb, pkt);
2195  } else {
2197  mkv_blockgroup_size(pkt->size));
2198 
2199 #if FF_API_CONVERGENCE_DURATION
2201  /* For backward compatibility, prefer convergence_duration. */
2202  if (pkt->convergence_duration > 0) {
2203  duration = pkt->convergence_duration;
2204  }
2206 #endif
2207  /* All subtitle blocks are considered to be keyframes. */
2208  mkv_write_block(s, pb, MATROSKA_ID_BLOCK, pkt, 1);
2210  end_ebml_master(pb, blockgroup);
2211  }
2212 
2213  if (s->pb->seekable) {
2214  ret = mkv_add_cuepoint(mkv->cues, pkt->stream_index, dash_tracknum, ts,
2215  mkv->cluster_pos, relative_packet_pos, duration);
2216  if (ret < 0)
2217  return ret;
2218  }
2219  }
2220 
2221  mkv->duration = FFMAX(mkv->duration, ts + duration);
2222 
2223  if (mkv->stream_durations)
2224  mkv->stream_durations[pkt->stream_index] =
2225  FFMAX(mkv->stream_durations[pkt->stream_index], ts + duration);
2226 
2227  return 0;
2228 }
2229 
2231 {
2232  MatroskaMuxContext *mkv = s->priv_data;
2234  int keyframe = !!(pkt->flags & AV_PKT_FLAG_KEY);
2235  int cluster_size;
2236  int64_t cluster_time;
2237  int ret;
2238  int start_new_cluster;
2239 
2240  ret = mkv_check_new_extra_data(s, pkt);
2241  if (ret < 0)
2242  return ret;
2243 
2244  if (mkv->tracks[pkt->stream_index].write_dts)
2245  cluster_time = pkt->dts - mkv->cluster_pts;
2246  else
2247  cluster_time = pkt->pts - mkv->cluster_pts;
2248  cluster_time += mkv->tracks[pkt->stream_index].ts_offset;
2249 
2250  // start a new cluster every 5 MB or 5 sec, or 32k / 1 sec for streaming or
2251  // after 4k and on a keyframe
2252  cluster_size = avio_tell(mkv->dyn_bc);
2253 
2254  if (mkv->is_dash && codec_type == AVMEDIA_TYPE_VIDEO) {
2255  // WebM DASH specification states that the first block of every cluster
2256  // has to be a key frame. So for DASH video, we only create a cluster
2257  // on seeing key frames.
2258  start_new_cluster = keyframe;
2259  } else if (mkv->is_dash && codec_type == AVMEDIA_TYPE_AUDIO &&
2260  (mkv->cluster_pos == -1 ||
2261  cluster_time > mkv->cluster_time_limit)) {
2262  // For DASH audio, we create a Cluster based on cluster_time_limit
2263  start_new_cluster = 1;
2264  } else if (!mkv->is_dash &&
2265  (cluster_size > mkv->cluster_size_limit ||
2266  cluster_time > mkv->cluster_time_limit ||
2267  (codec_type == AVMEDIA_TYPE_VIDEO && keyframe &&
2268  cluster_size > 4 * 1024))) {
2269  start_new_cluster = 1;
2270  } else {
2271  start_new_cluster = 0;
2272  }
2273 
2274  if (mkv->cluster_pos != -1 && start_new_cluster) {
2275  mkv_start_new_cluster(s, pkt);
2276  }
2277 
2278  if (!mkv->cluster_pos)
2279  avio_write_marker(s->pb,
2282 
2283  // check if we have an audio packet cached
2284  if (mkv->cur_audio_pkt.size > 0) {
2285  // for DASH audio, a CuePoint has to be added when there is a new cluster.
2287  mkv->is_dash ? start_new_cluster : 0);
2289  if (ret < 0) {
2290  av_log(s, AV_LOG_ERROR,
2291  "Could not write cached audio packet ret:%d\n", ret);
2292  return ret;
2293  }
2294  }
2295 
2296  // buffer an audio packet to ensure the packet containing the video
2297  // keyframe's timecode is contained in the same cluster for WebM
2298  if (codec_type == AVMEDIA_TYPE_AUDIO) {
2299  ret = av_packet_ref(&mkv->cur_audio_pkt, pkt);
2300  } else
2301  ret = mkv_write_packet_internal(s, pkt, 0);
2302  return ret;
2303 }
2304 
2306 {
2307  MatroskaMuxContext *mkv = s->priv_data;
2308 
2309  if (!pkt) {
2310  if (mkv->cluster_pos != -1) {
2311  end_ebml_master_crc32(s->pb, &mkv->dyn_bc, mkv, mkv->cluster);
2312  mkv->cluster_pos = -1;
2313  if (s->pb->seekable)
2314  av_log(s, AV_LOG_DEBUG,
2315  "Flushing cluster at offset %" PRIu64 " bytes\n",
2316  avio_tell(s->pb));
2317  else
2318  av_log(s, AV_LOG_DEBUG, "Flushing cluster\n");
2319  avio_flush(s->pb);
2320  }
2321  return 1;
2322  }
2323  return mkv_write_packet(s, pkt);
2324 }
2325 
2327 {
2328  MatroskaMuxContext *mkv = s->priv_data;
2329  AVIOContext *pb = s->pb;
2330  int64_t currentpos, cuespos;
2331  int ret;
2332 
2333  // check if we have an audio packet cached
2334  if (mkv->cur_audio_pkt.size > 0) {
2335  ret = mkv_write_packet_internal(s, &mkv->cur_audio_pkt, 0);
2337  if (ret < 0) {
2338  av_log(s, AV_LOG_ERROR,
2339  "Could not write cached audio packet ret:%d\n", ret);
2340  return ret;
2341  }
2342  }
2343 
2344  if (mkv->dyn_bc) {
2345  end_ebml_master_crc32(pb, &mkv->dyn_bc, mkv, mkv->cluster);
2346  }
2347 
2348  if (mkv->mode != MODE_WEBM) {
2349  ret = mkv_write_chapters(s);
2350  if (ret < 0)
2351  return ret;
2352  }
2353 
2354  if (pb->seekable && !mkv->is_live) {
2355  if (mkv->cues->num_entries) {
2356  if (mkv->reserve_cues_space) {
2357  int64_t cues_end;
2358 
2359  currentpos = avio_tell(pb);
2360  avio_seek(pb, mkv->cues_pos, SEEK_SET);
2361 
2362  cuespos = mkv_write_cues(s, mkv->cues, mkv->tracks, s->nb_streams);
2363  cues_end = avio_tell(pb);
2364  if (cues_end > cuespos + mkv->reserve_cues_space) {
2365  av_log(s, AV_LOG_ERROR,
2366  "Insufficient space reserved for cues: %d "
2367  "(needed: %" PRId64 ").\n",
2368  mkv->reserve_cues_space, cues_end - cuespos);
2369  return AVERROR(EINVAL);
2370  }
2371 
2372  if (cues_end < cuespos + mkv->reserve_cues_space)
2374  (cues_end - cuespos));
2375 
2376  avio_seek(pb, currentpos, SEEK_SET);
2377  } else {
2378  cuespos = mkv_write_cues(s, mkv->cues, mkv->tracks, s->nb_streams);
2379  }
2380 
2382  cuespos);
2383  if (ret < 0)
2384  return ret;
2385  }
2386 
2387  mkv_write_seekhead(pb, mkv);
2388 
2389  // update the duration
2390  av_log(s, AV_LOG_DEBUG, "end duration = %" PRIu64 "\n", mkv->duration);
2391  currentpos = avio_tell(pb);
2392  avio_seek(mkv->info_bc, mkv->duration_offset, SEEK_SET);
2394  avio_seek(pb, mkv->info.pos, SEEK_SET);
2395  end_ebml_master_crc32(pb, &mkv->info_bc, mkv, mkv->info);
2396 
2397  // write tracks master
2398  avio_seek(pb, mkv->tracks_master.pos, SEEK_SET);
2399  end_ebml_master_crc32(pb, &mkv->tracks_bc, mkv, mkv->tracks_master);
2400 
2401  // update stream durations
2402  if (!mkv->is_live && mkv->stream_durations) {
2403  int i;
2404  int64_t curr = avio_tell(mkv->tags_bc);
2405  for (i = 0; i < s->nb_streams; ++i) {
2406  AVStream *st = s->streams[i];
2407 
2408  if (mkv->stream_duration_offsets[i] > 0) {
2409  double duration_sec = mkv->stream_durations[i] * av_q2d(st->time_base);
2410  char duration_string[20] = "";
2411 
2412  av_log(s, AV_LOG_DEBUG, "stream %d end duration = %" PRIu64 "\n", i,
2413  mkv->stream_durations[i]);
2414 
2415  avio_seek(mkv->tags_bc, mkv->stream_duration_offsets[i], SEEK_SET);
2416 
2417  snprintf(duration_string, 20, "%02d:%02d:%012.9f",
2418  (int) duration_sec / 3600, ((int) duration_sec / 60) % 60,
2419  fmod(duration_sec, 60));
2420 
2421  put_ebml_binary(mkv->tags_bc, MATROSKA_ID_TAGSTRING, duration_string, 20);
2422  }
2423  }
2424  avio_seek(mkv->tags_bc, curr, SEEK_SET);
2425  }
2426  if (mkv->tags.pos && !mkv->is_live) {
2427  avio_seek(pb, mkv->tags.pos, SEEK_SET);
2428  end_ebml_master_crc32(pb, &mkv->tags_bc, mkv, mkv->tags);
2429  }
2430 
2431  avio_seek(pb, currentpos, SEEK_SET);
2432  }
2433 
2434  if (!mkv->is_live) {
2435  end_ebml_master(pb, mkv->segment);
2436  }
2437 
2438  mkv_free(mkv);
2439  return 0;
2440 }
2441 
2442 static int mkv_query_codec(enum AVCodecID codec_id, int std_compliance)
2443 {
2444  int i;
2445  for (i = 0; ff_mkv_codec_tags[i].id != AV_CODEC_ID_NONE; i++)
2446  if (ff_mkv_codec_tags[i].id == codec_id)
2447  return 1;
2448 
2449  if (std_compliance < FF_COMPLIANCE_NORMAL) {
2450  enum AVMediaType type = avcodec_get_type(codec_id);
2451  // mkv theoretically supports any video/audio through VFW/ACM
2452  if (type == AVMEDIA_TYPE_VIDEO || type == AVMEDIA_TYPE_AUDIO)
2453  return 1;
2454  }
2455 
2456  return 0;
2457 }
2458 
2459 static int mkv_init(struct AVFormatContext *s)
2460 {
2461  int i;
2462 
2463  if (s->avoid_negative_ts < 0) {
2464  s->avoid_negative_ts = 1;
2466  }
2467 
2468  for (i = 0; i < s->nb_streams; i++) {
2469  // ms precision is the de-facto standard timescale for mkv files
2470  avpriv_set_pts_info(s->streams[i], 64, 1, 1000);
2471  }
2472 
2473  return 0;
2474 }
2475 
2476 static int mkv_check_bitstream(struct AVFormatContext *s, const AVPacket *pkt)
2477 {
2478  int ret = 1;
2479  AVStream *st = s->streams[pkt->stream_index];
2480 
2481  if (st->codecpar->codec_id == AV_CODEC_ID_AAC) {
2482  if (pkt->size > 2 && (AV_RB16(pkt->data) & 0xfff0) == 0xfff0)
2483  ret = ff_stream_add_bitstream_filter(st, "aac_adtstoasc", NULL);
2484  } else if (st->codecpar->codec_id == AV_CODEC_ID_VP9) {
2485  ret = ff_stream_add_bitstream_filter(st, "vp9_superframe", NULL);
2486  }
2487 
2488  return ret;
2489 }
2490 
2492  { AV_CODEC_ID_ALAC, 0XFFFFFFFF },
2493  { AV_CODEC_ID_EAC3, 0XFFFFFFFF },
2494  { AV_CODEC_ID_MLP, 0xFFFFFFFF },
2495  { AV_CODEC_ID_OPUS, 0xFFFFFFFF },
2496  { AV_CODEC_ID_PCM_S16BE, 0xFFFFFFFF },
2497  { AV_CODEC_ID_PCM_S24BE, 0xFFFFFFFF },
2498  { AV_CODEC_ID_PCM_S32BE, 0xFFFFFFFF },
2499  { AV_CODEC_ID_QDM2, 0xFFFFFFFF },
2500  { AV_CODEC_ID_RA_144, 0xFFFFFFFF },
2501  { AV_CODEC_ID_RA_288, 0xFFFFFFFF },
2502  { AV_CODEC_ID_COOK, 0xFFFFFFFF },
2503  { AV_CODEC_ID_TRUEHD, 0xFFFFFFFF },
2504  { AV_CODEC_ID_NONE, 0xFFFFFFFF }
2505 };
2506 
2508  { AV_CODEC_ID_RV10, 0xFFFFFFFF },
2509  { AV_CODEC_ID_RV20, 0xFFFFFFFF },
2510  { AV_CODEC_ID_RV30, 0xFFFFFFFF },
2511  { AV_CODEC_ID_RV40, 0xFFFFFFFF },
2512  { AV_CODEC_ID_VP9, 0xFFFFFFFF },
2513  { AV_CODEC_ID_NONE, 0xFFFFFFFF }
2514 };
2515 
2517  { AV_CODEC_ID_DVB_SUBTITLE, 0xFFFFFFFF },
2518  { AV_CODEC_ID_HDMV_PGS_SUBTITLE, 0xFFFFFFFF },
2519  { AV_CODEC_ID_NONE, 0xFFFFFFFF }
2520 };
2521 
2522 #define OFFSET(x) offsetof(MatroskaMuxContext, x)
2523 #define FLAGS AV_OPT_FLAG_ENCODING_PARAM
2524 static const AVOption options[] = {
2525  { "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 },
2526  { "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 },
2527  { "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 },
2528  { "dash", "Create a WebM file conforming to WebM DASH specification", OFFSET(is_dash), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS },
2529  { "dash_track_number", "Track number for the DASH stream", OFFSET(dash_track_number), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 127, FLAGS },
2530  { "live", "Write files assuming it is a live stream.", OFFSET(is_live), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS },
2531  { "allow_raw_vfw", "allow RAW VFW mode", OFFSET(allow_raw_vfw), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS },
2532  { "write_crc32", "write a CRC32 element inside every Level 1 element", OFFSET(write_crc), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, FLAGS },
2533  { NULL },
2534 };
2535 
2536 #if CONFIG_MATROSKA_MUXER
2537 static const AVClass matroska_class = {
2538  .class_name = "matroska muxer",
2539  .item_name = av_default_item_name,
2540  .option = options,
2541  .version = LIBAVUTIL_VERSION_INT,
2542 };
2543 
2544 AVOutputFormat ff_matroska_muxer = {
2545  .name = "matroska",
2546  .long_name = NULL_IF_CONFIG_SMALL("Matroska"),
2547  .mime_type = "video/x-matroska",
2548  .extensions = "mkv",
2549  .priv_data_size = sizeof(MatroskaMuxContext),
2550  .audio_codec = CONFIG_LIBVORBIS_ENCODER ?
2552  .video_codec = CONFIG_LIBX264_ENCODER ?
2554  .init = mkv_init,
2560  .codec_tag = (const AVCodecTag* const []){
2563  },
2564  .subtitle_codec = AV_CODEC_ID_ASS,
2565  .query_codec = mkv_query_codec,
2566  .check_bitstream = mkv_check_bitstream,
2567  .priv_class = &matroska_class,
2568 };
2569 #endif
2570 
2571 #if CONFIG_WEBM_MUXER
2572 static const AVClass webm_class = {
2573  .class_name = "webm muxer",
2574  .item_name = av_default_item_name,
2575  .option = options,
2576  .version = LIBAVUTIL_VERSION_INT,
2577 };
2578 
2579 AVOutputFormat ff_webm_muxer = {
2580  .name = "webm",
2581  .long_name = NULL_IF_CONFIG_SMALL("WebM"),
2582  .mime_type = "video/webm",
2583  .extensions = "webm",
2584  .priv_data_size = sizeof(MatroskaMuxContext),
2585  .audio_codec = CONFIG_LIBOPUS_ENCODER ? AV_CODEC_ID_OPUS : AV_CODEC_ID_VORBIS,
2586  .video_codec = CONFIG_LIBVPX_VP9_ENCODER? AV_CODEC_ID_VP9 : AV_CODEC_ID_VP8,
2587  .subtitle_codec = AV_CODEC_ID_WEBVTT,
2588  .init = mkv_init,
2592  .check_bitstream = mkv_check_bitstream,
2595  .priv_class = &webm_class,
2596 };
2597 #endif
2598 
2599 #if CONFIG_MATROSKA_AUDIO_MUXER
2600 static const AVClass mka_class = {
2601  .class_name = "matroska audio muxer",
2602  .item_name = av_default_item_name,
2603  .option = options,
2604  .version = LIBAVUTIL_VERSION_INT,
2605 };
2606 AVOutputFormat ff_matroska_audio_muxer = {
2607  .name = "matroska",
2608  .long_name = NULL_IF_CONFIG_SMALL("Matroska Audio"),
2609  .mime_type = "audio/x-matroska",
2610  .extensions = "mka",
2611  .priv_data_size = sizeof(MatroskaMuxContext),
2612  .audio_codec = CONFIG_LIBVORBIS_ENCODER ?
2613  AV_CODEC_ID_VORBIS : AV_CODEC_ID_AC3,
2614  .video_codec = AV_CODEC_ID_NONE,
2615  .init = mkv_init,
2619  .check_bitstream = mkv_check_bitstream,
2622  .codec_tag = (const AVCodecTag* const []){
2624  },
2625  .priv_class = &mka_class,
2626 };
2627 #endif
unsigned int nb_chapters
Number of chapters in AVChapter array.
Definition: avformat.h:1543
static int mkv_write_packet_internal(AVFormatContext *s, AVPacket *pkt, int add_cue)
Definition: matroskaenc.c:2148
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
enum AVChromaLocation chroma_location
Definition: avcodec.h:4077
internal header for HEVC (de)muxer utilities
#define AV_DISPOSITION_METADATA
Definition: avformat.h:873
void avio_wb64(AVIOContext *s, uint64_t val)
Definition: aviobuf.c:440
#define NULL
Definition: coverity.c:32
static int mkv_write_vtt_blocks(AVFormatContext *s, AVIOContext *pb, AVPacket *pkt)
Definition: matroskaenc.c:2046
const char const char void * val
Definition: avisynth_c.h:771
#define MATROSKA_ID_BLOCKADDID
Definition: matroska.h:230
#define MATROSKA_ID_TRACKDEFAULTDURATION
Definition: matroska.h:104
void avio_wl16(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:446
static void put_ebml_size_unknown(AVIOContext *pb, int bytes)
Write an EBML size meaning "unknown size".
Definition: matroskaenc.c:196
const char * s
Definition: avisynth_c.h:768
Bytestream IO Context.
Definition: avio.h:147
enum AVColorTransferCharacteristic color_trc
Definition: avcodec.h:4075
#define MATROSKA_ID_VIDEOFLAGINTERLACED
Definition: matroska.h:121
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
#define MATROSKA_ID_VIDEOCOLOR_GX
Definition: matroska.h:147
enum AVCodecID codec_id
Definition: ffmpeg_vaapi.c:149
void ff_metadata_conv_ctx(AVFormatContext *ctx, const AVMetadataConv *d_conv, const AVMetadataConv *s_conv)
Definition: metadata.c:59
#define MATROSKA_ID_DATEUTC
Definition: matroska.h:71
int sizebytes
how many bytes were reserved for the size
Definition: matroskaenc.c:61
#define MAX_TRACKS
Maximum number of tracks allowed in a Matroska file (with track numbers in range 1 to 126 (inclusive)...
Definition: matroskaenc.c:115
The optional first identifier line of a WebVTT cue.
Definition: avcodec.h:1513
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:2084
int avio_close_dyn_buf(AVIOContext *s, uint8_t **pbuffer)
Return the written size and a pointer to the buffer.
Definition: aviobuf.c:1280
AVOption.
Definition: opt.h:246
hash context
Definition: sha.c:34
int64_t cluster_pos
file offset of the cluster containing the block
Definition: matroskaenc.c:82
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:2459
enum AVCodecID id
Definition: mxfenc.c:104
ebml_master tracks_master
Definition: matroskaenc.c:126
#define MATROSKA_ID_CUETRACKPOSITION
Definition: matroska.h:192
enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
Definition: utils.c:3027
#define MATROSKA_ID_CODECPRIVATE
Definition: matroska.h:89
av_cold int av_sha_init(AVSHA *ctx, int bits)
Initialize SHA-1 or SHA-2 hashing.
Definition: sha.c:273
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits, unsigned int pts_num, unsigned int pts_den)
Set the time base and wrapping info for a given stream.
Definition: utils.c:4581
int av_parse_time(int64_t *timeval, const char *timestr, int duration)
Parse timestr and return in *time a corresponding number of microseconds.
Definition: parseutils.c:559
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
#define MATROSKA_ID_AUDIOBITDEPTH
Definition: matroska.h:167
#define MATROSKA_ID_TRACKFLAGDEFAULT
Definition: matroska.h:99
static const AVCodecTag additional_subtitle_tags[]
Definition: matroskaenc.c:2516
This side data should be associated with a video stream and contains Stereoscopic 3D information in f...
Definition: avcodec.h:1431
static int mkv_write_attachments(AVFormatContext *s)
Definition: matroskaenc.c:1564
uint64_t pts
Definition: matroskaenc.c:79
static int mkv_write_video_color(AVIOContext *pb, AVCodecParameters *par, AVStream *st)
Definition: matroskaenc.c:809
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:3987
#define MATROSKA_ID_TAGTARGETS_ATTACHUID
Definition: matroska.h:214
int num
Numerator.
Definition: rational.h:59
int size
Definition: avcodec.h:1608
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
Definition: aviobuf.c:230
#define MATROSKA_ID_FILEDATA
Definition: matroska.h:246
AVFormatInternal * internal
An opaque field for libavformat internal usage.
Definition: avformat.h:1767
#define EBML_ID_DOCTYPEREADVERSION
Definition: matroska.h:42
#define MATROSKA_ID_BLOCKREFERENCE
Definition: matroska.h:237
int av_log2(unsigned v)
Definition: intmath.c:26
static int mkv_write_header(AVFormatContext *s)
Definition: matroskaenc.c:1686
#define MATROSKA_ID_TRACKTYPE
Definition: matroska.h:80
enum AVMediaType codec_type
Definition: rtp.c:37
#define MATROSKA_ID_TAGTARGETS_CHAPTERUID
Definition: matroska.h:213
int ff_flac_is_native_layout(uint64_t channel_layout)
int64_t duration
duration of the block according to time base
Definition: matroskaenc.c:84
static av_always_inline uint64_t av_double2int(double f)
Reinterpret a double as a 64-bit integer.
Definition: intfloat.h:70
#define MATROSKA_ID_VIDEOCOLOR_RX
Definition: matroska.h:145
#define MATROSKA_ID_MUXINGAPP
Definition: matroska.h:70
int64_t cluster_time_limit
Definition: matroskaenc.c:147
#define MATROSKA_ID_AUDIOCHANNELS
Definition: matroska.h:168
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:3017
int64_t segment_offset
Definition: matroskaenc.c:88
int version
Definition: avisynth_c.h:766
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:252
int avoid_negative_ts_use_pts
Definition: internal.h:121
const char * master
Definition: vf_curves.c:114
AVPacketSideData * side_data
An array of side data that applies to the whole stream (i.e.
Definition: avformat.h:996
static AVPacket pkt
#define av_le2ne32(x)
Definition: bswap.h:96
#define MATROSKA_ID_CUECLUSTERPOSITION
Definition: matroska.h:196
#define MATROSKA_ID_VIDEOCOLOR_LUMINANCEMAX
Definition: matroska.h:153
Definition: matroskaenc.c:64
int avcodec_enum_to_chroma_pos(int *xpos, int *ypos, enum AVChromaLocation pos)
Converts AVChromaLocation to swscale x/y chroma position.
Definition: utils.c:447
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:1299
#define MATROSKA_ID_VIDEOCOLORCHROMASITINGHORZ
Definition: matroska.h:135
mkv_track * tracks
Definition: matroskaenc.c:136
#define src
Definition: vp8dsp.c:254
#define AVFMT_ALLOW_FLUSH
Format allows flushing.
Definition: avformat.h:495
Views are next to each other.
Definition: stereo3d.h:45
#define MATROSKA_ID_EDITIONFLAGDEFAULT
Definition: matroska.h:260
#define MATROSKA_ID_CLUSTERTIMECODE
Definition: matroska.h:224
int avio_open_dyn_buf(AVIOContext **s)
Open a write only memory stream.
Definition: aviobuf.c:1268
#define EBML_ID_DOCTYPE
Definition: matroska.h:40
#define AVFMT_TS_NONSTRICT
Format does not require strictly increasing timestamps, but they must still be monotonic.
Definition: avformat.h:496
This struct describes the properties of an encoded stream.
Definition: avcodec.h:3979
#define MATROSKA_ID_CHAPTERTIMEEND
Definition: matroska.h:253
enum AVColorSpace color_space
Definition: avcodec.h:4076
int64_t pos
absolute offset in the file where the master's elements start
Definition: matroskaenc.c:60
MatroskaVideoStereoModeType
Definition: matroska.h:300
Mastering display metadata (based on SMPTE-2086:2014).
Definition: avcodec.h:1539
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:2523
#define MATROSKA_ID_FILEDESC
Definition: matroska.h:243
Format I/O context.
Definition: avformat.h:1338
#define EBML_ID_CRC32
Definition: matroska.h:46
UID uid
Definition: mxfenc.c:1819
char str[32]
Definition: internal.h:50
int64_t cluster_pos
file offset of the current cluster
Definition: matroskaenc.c:130
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:2491
Public dictionary API.
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:102
void avio_wl32(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:346
uint8_t
#define MATROSKA_ID_VIDEOCOLOR_BX
Definition: matroska.h:149
#define MATROSKA_ID_CHAPLANG
Definition: matroska.h:256
#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:1446
AVOptions.
#define MATROSKA_ID_TRACKLANGUAGE
Definition: matroska.h:97
AVCodecParameters * avcodec_parameters_alloc(void)
Allocate a new AVCodecParameters and set its fields to default values (unknown/invalid/0).
Definition: utils.c:4128
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:73
static int ebml_id_size(unsigned int id)
Definition: matroskaenc.c:179
#define OPUS_SEEK_PREROLL
Seek preroll value for opus.
Definition: matroskaenc.c:177
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:66
int id
unique ID to identify the chapter
Definition: avformat.h:1296
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
Definition: avcodec.h:1625
#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:742
#define MATROSKA_ID_SIMPLEBLOCK
Definition: matroska.h:232
#define MATROSKA_ID_EDITIONFLAGHIDDEN
Definition: matroska.h:259
int nb_side_data
The number of elements in the AVStream.side_data array.
Definition: avformat.h:1000
void avio_write_marker(AVIOContext *s, int64_t time, enum AVIODataMarkerType type)
Mark the written bytestream as a specific type.
Definition: aviobuf.c:470
uint8_t * av_stream_get_side_data(const AVStream *stream, enum AVPacketSideDataType type, int *size)
Get side information from stream.
Definition: utils.c:5098
#define MATROSKA_ID_BLOCKMORE
Definition: matroska.h:229
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:1406
int64_t duration
Definition: movenc.c:63
#define MATROSKA_ID_CUERELATIVEPOSITION
Definition: matroska.h:197
A point in the output bytestream where a demuxer can start parsing (for non self synchronizing bytest...
Definition: avio.h:120
#define MATROSKA_ID_AUDIOOUTSAMPLINGFREQ
Definition: matroska.h:165
#define MATROSKA_ID_VIDEOCOLOR
Definition: matroska.h:127
Public header for CRC hash function implementation.
int initial_padding
Audio only.
Definition: avcodec.h:4116
AVDictionaryEntry * av_dict_get(const AVDictionary *m, const char *key, const AVDictionaryEntry *prev, int flags)
Get a dictionary entry with matching key.
Definition: dict.c:40
int flags
Flags modifying the (de)muxer behaviour.
Definition: avformat.h:1449
uint8_t * data
Definition: avcodec.h:1607
static double av_q2d(AVRational a)
Convert an AVRational to a double.
Definition: rational.h:104
static int64_t mkv_write_cues(AVFormatContext *s, mkv_cues *cues, mkv_track *tracks, int num_tracks)
Definition: matroskaenc.c:541
#define MATROSKA_ID_VIDEODISPLAYWIDTH
Definition: matroska.h:112
static int flags
Definition: log.c:57
#define MATROSKA_ID_BLOCKADDITIONS
Definition: matroska.h:228
uint32_t tag
Definition: movenc.c:1412
Not part of ABI.
Definition: pixfmt.h:475
#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:1551
#define MATROSKA_ID_CUES
Definition: matroska.h:58
static int start_ebml_master_crc32(AVIOContext *pb, AVIOContext **dyn_cp, MatroskaMuxContext *mkv, ebml_master *master, unsigned int elementid, uint64_t expectedsize)
Definition: matroskaenc.c:328
int64_t ts_offset
Definition: matroskaenc.c:97
ptrdiff_t size
Definition: opengl_enc.c:101
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
Definition: avio.h:511
int av_reduce(int *dst_num, int *dst_den, int64_t num, int64_t den, int64_t max)
Reduce a fraction.
Definition: rational.c:35
int has_luminance
Flag indicating whether the luminance (min_ and max_) have been set.
static const uint8_t header[24]
Definition: sdr2.c:67
#define MATROSKA_ID_TRACKNUMBER
Definition: matroska.h:78
#define MATROSKA_ID_VIDEOCOLOR_WHITEY
Definition: matroska.h:152
void avio_write(AVIOContext *s, const unsigned char *buf, int size)
Definition: aviobuf.c:204
Definition: wv.h:34
#define AVFMT_FLAG_BITEXACT
When muxing, try to avoid writing any random/volatile data to the output.
Definition: avformat.h:1466
Views are alternated temporally.
Definition: stereo3d.h:66
void * av_realloc_array(void *ptr, size_t nmemb, size_t size)
Definition: mem.c:208
#define MATROSKA_ID_SEGMENTUID
Definition: matroska.h:72
uint64_t channel_layout
Audio only.
Definition: avcodec.h:4089
static void put_ebml_num(AVIOContext *pb, uint64_t num, int bytes)
Write a number in EBML variable length format.
Definition: matroskaenc.c:220
#define av_log(a,...)
int has_cue
Definition: matroskaenc.c:95
#define AV_DISPOSITION_CAPTIONS
To specify text track kind (different from subtitles default).
Definition: avformat.h:871
static int mkv_add_seekhead_entry(mkv_seekhead *seekhead, unsigned int elementid, uint64_t filepos)
Definition: matroskaenc.c:429
int64_t segment_offset
the file offset to the beginning of the segment
Definition: matroskaenc.c:71
struct AVOutputFormat * oformat
The output container format.
Definition: avformat.h:1357
int av_packet_ref(AVPacket *dst, const AVPacket *src)
Setup a new reference to the data described by a given packet.
Definition: avpacket.c:578
#define FF_COMPLIANCE_UNOFFICIAL
Allow unofficial extensions.
Definition: avcodec.h:2905
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: avcodec.h:1639
static int get_aac_sample_rates(AVFormatContext *s, AVCodecParameters *par, int *sample_rate, int *output_sample_rate)
Definition: matroskaenc.c:685
#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:127
static int mkv_write_simpletag(AVIOContext *pb, AVDictionaryEntry *t)
Definition: matroskaenc.c:1373
#define MATROSKA_ID_VIDEOSTEREOMODE
Definition: matroska.h:123
uint32_t chapter_id_offset
Definition: matroskaenc.c:153
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:5300
AVPacket cur_audio_pkt
Definition: matroskaenc.c:139
AVCodecID
Identify the syntax and semantics of the bitstream.
Definition: avcodec.h:191
static int mkv_write_tags(AVFormatContext *s)
Definition: matroskaenc.c:1481
#define MATROSKA_ID_VIDEOCOLOR_BY
Definition: matroska.h:150
int avcodec_parameters_copy(AVCodecParameters *dst, const AVCodecParameters *src)
Copy the contents of src to dst.
Definition: utils.c:4149
#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:3536
AVDictionary * metadata
Metadata that applies to the whole file.
Definition: avformat.h:1554
int flags
Additional information about the frame packing.
Definition: stereo3d.h:132
#define MATROSKA_ID_BLOCKDURATION
Definition: matroska.h:236
#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:171
#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:65
int reserved_size
-1 if appending to file
Definition: matroskaenc.c:72
#define MATROSKA_ID_CLUSTER
Definition: matroska.h:62
const char * ff_convert_lang_to(const char *lang, enum AVLangCodespace target_codespace)
Convert a language code to a target codespace.
Definition: avlanguage.c:736
#define MATROSKA_ID_VIDEOCOLORCHROMASITINGVERT
Definition: matroska.h:136
#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:4074
#define MATROSKA_ID_FILEMIMETYPE
Definition: matroska.h:245
#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:416
AVIOContext * tracks_bc
Definition: matroskaenc.c:125
const char *const ff_matroska_video_stereo_mode[MATROSKA_VIDEO_STEREOMODE_TYPE_NB]
Definition: matroska.c:127
void av_dict_free(AVDictionary **pm)
Free all the memory allocated for an AVDictionary struct and all keys and values. ...
Definition: dict.c:203
static int mkv_blockgroup_size(int pkt_size)
Definition: matroskaenc.c:1883
enum AVMediaType codec_type
General type of the encoded data.
Definition: avcodec.h:3983
static int ebml_num_size(uint64_t num)
Calculate how many bytes are needed to represent a given number in EBML.
Definition: matroskaenc.c:206
int write_dts
Definition: matroskaenc.c:94
int final
Definition: wv.h:43
AVChapter ** chapters
Definition: avformat.h:1544
enum AVCodecID id
Definition: matroska.h:354
enum AVPacketSideDataType type
Definition: avcodec.h:1553
enum AVMediaType avcodec_get_type(enum AVCodecID codec_id)
Get the type of the given codec.
Definition: codec_desc.c:3006
static int mkv_write_chapters(AVFormatContext *s)
Definition: matroskaenc.c:1319
static int mkv_check_tag(AVDictionary *m, unsigned int elementid)
Definition: matroskaenc.c:1470
#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:263
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:209
const AVCodecTag ff_codec_wav_tags[]
Definition: riff.c:436
#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:408
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).
void avcodec_parameters_free(AVCodecParameters **par)
Free an AVCodecParameters instance and everything associated with it and write NULL to the supplied p...
Definition: utils.c:4138
int64_t filepos
Definition: matroskaenc.c:70
static void * av_mallocz_array(size_t nmemb, size_t size)
Definition: mem.h:226
#define fail()
Definition: checkasm.h:84
int flags
A combination of AV_PKT_FLAG values.
Definition: avcodec.h:1613
int extradata_size
Size of the extradata content in bytes.
Definition: avcodec.h:4005
const CodecMime ff_mkv_mime_tags[]
Definition: matroska.c:111
#define MATROSKA_ID_TAG
Definition: matroska.h:202
#define AV_DISPOSITION_FORCED
Track should be used during playback by default.
Definition: avformat.h:848
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
Definition: avformat.h:1394
#define LIBAVFORMAT_IDENT
Definition: version.h:46
Views are packed per line, as if interlaced.
Definition: stereo3d.h:97
int seekable
A combination of AVIO_SEEKABLE_ flags or 0 when the stream is not seekable.
Definition: avio.h:243
int void avio_flush(AVIOContext *s)
Force flushing of buffered data.
Definition: aviobuf.c:224
#define MATROSKA_ID_VIDEOCOLOR_LUMINANCEMIN
Definition: matroska.h:154
audio channel layout utility functions
#define EBML_ID_EBMLVERSION
Definition: matroska.h:36
int64_t av_rescale(int64_t a, int64_t b, int64_t c)
Rescale a 64-bit integer with rounding to nearest.
Definition: mathematics.c:129
mkv_cuepoint * entries
Definition: matroskaenc.c:89
void ffio_fill(AVIOContext *s, int b, int count)
Definition: aviobuf.c:190
#define AV_TIME_BASE
Internal time base represented as integer.
Definition: avutil.h:254
#define MATROSKA_ID_TAGTARGETS
Definition: matroska.h:209
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:204
AVRational min_luminance
Min luminance of mastering display (cd/m^2).
static int put_wv_codecpriv(AVIOContext *pb, AVCodecParameters *par)
Definition: matroskaenc.c:629
static void mkv_free(MatroskaMuxContext *mkv)
Free the members allocated in the mux context.
Definition: matroskaenc.c:379
#define MATROSKA_ID_CHAPTERFLAGENABLED
Definition: matroska.h:264
static int64_t mkv_write_seekhead(AVIOContext *pb, MatroskaMuxContext *mkv)
Write the seek head to the file and free it.
Definition: matroskaenc.c:457
static int64_t get_metadata_duration(AVFormatContext *s)
Definition: matroskaenc.c:1662
static int write_trailer(AVFormatContext *s1)
Definition: v4l2enc.c:94
static void bit_depth(AudioStatsContext *s, uint64_t mask, uint64_t imask, AVRational *depth)
Definition: af_astats.c:150
#define AVFMT_GLOBALHEADER
Format wants global header.
Definition: avformat.h:485
int ff_wv_parse_header(WvHeader *wv, const uint8_t *data)
Parse a WavPack block header.
Definition: wv.c:29
int ff_hevc_annexb2mp4_buf(const uint8_t *buf_in, uint8_t **buf_out, int *size, int filter_ps, int *ps_count)
Writes Annex B formatted HEVC NAL units to a data buffer.
Definition: hevc.c:1077
#define MATROSKA_ID_SIMPLETAG
Definition: matroska.h:203
const char * name
Definition: avformat.h:524
internal header for RIFF based (de)muxers do NOT include this in end user applications ...
uint32_t av_crc(const AVCRC *ctx, uint32_t crc, const uint8_t *buffer, size_t length)
Calculate the CRC of a block.
Definition: crc.c:357
#define AV_WB24(p, d)
Definition: intreadwrite.h:450
static int mkv_check_new_extra_data(AVFormatContext *s, AVPacket *pkt)
Definition: matroskaenc.c:2102
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:1645
#define MATROSKA_ID_CHAPTERATOM
Definition: matroska.h:251
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:958
enum AVColorRange color_range
Video only.
Definition: avcodec.h:4073
AVIOContext * info_bc
Definition: matroskaenc.c:123
Opaque data information usually sparse.
Definition: avutil.h:205
#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 OFFSET(x)
Definition: matroskaenc.c:2522
#define AV_STEREO3D_FLAG_INVERT
Inverted views, Right/Bottom represents the left view.
Definition: stereo3d.h:114
#define MATROSKA_ID_AUDIOSAMPLINGFREQ
Definition: matroska.h:164
const char * avcodec_get_name(enum AVCodecID id)
Get the name of a codec.
Definition: utils.c:3147
static void end_ebml_master_crc32(AVIOContext *pb, AVIOContext **dyn_cp, MatroskaMuxContext *mkv, ebml_master master)
Definition: matroskaenc.c:346
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:518
static void put_ebml_float(AVIOContext *pb, unsigned int elementid, double val)
Definition: matroskaenc.c:265
Stream structure.
Definition: avformat.h:889
#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:280
int64_t end
chapter start/end time in time_base units
Definition: avformat.h:1298
static int mkv_write_track(AVFormatContext *s, MatroskaMuxContext *mkv, int i, AVIOContext *pb, int default_stream_exists)
Definition: matroskaenc.c:1025
The AV_PKT_DATA_NEW_EXTRADATA is used to notify the codec or the format that the extradata buffer was...
Definition: avcodec.h:1372
#define AV_DISPOSITION_DEFAULT
Definition: avformat.h:836
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:872
char * av_strdup(const char *s)
Duplicate a string.
Definition: mem.c:267
#define MATROSKA_ID_TRACKFLAGFORCED
Definition: matroska.h:100
#define MATROSKA_ID_TAGS
Definition: matroska.h:59
#define MATROSKA_ID_VIDEOCOLORPRIMARIES
Definition: matroska.h:140
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_WB32 unsigned int_TMPL AV_RB24
Definition: bytestream.h:87
#define AV_TIME_BASE_Q
Internal time base represented as fractional value.
Definition: avutil.h:260
#define MATROSKA_ID_SEEKID
Definition: matroska.h:220
AVIOContext * pb
I/O context.
Definition: avformat.h:1380
int64_t codecpriv_offset
Definition: matroskaenc.c:96
void avio_w8(AVIOContext *s, int b)
Definition: aviobuf.c:182
Public header for SHA-1 & SHA-256 hash function implementations.
#define MATROSKA_ID_BLOCK
Definition: matroska.h:235
#define MATROSKA_ID_INFO
Definition: matroska.h:56
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
Definition: avpacket.c:569
#define MATROSKA_ID_TAGTARGETS_TRACKUID
Definition: matroska.h:212
static const EbmlSyntax ebml_header[]
Definition: matroskadec.c:378
mkv_attachment * entries
Definition: matroskaenc.c:106
uint32_t fileuid
Definition: matroskaenc.c:102
#define MATROSKA_ID_TAGLANG
Definition: matroska.h:206
static int mkv_check_tag_name(const char *name, unsigned int elementid)
Definition: matroskaenc.c:1432
struct AVSHA * av_sha_alloc(void)
Allocate an AVSHA context.
Definition: sha.c:45
static unsigned int av_lfg_get(AVLFG *c)
Get the next random unsigned 32-bit number using an ALFG.
Definition: lfg.h:38
#define MATROSKA_ID_TRACKS
Definition: matroska.h:57
void * buf
Definition: avisynth_c.h:690
Data found in BlockAdditional element of matroska container.
Definition: avcodec.h:1508
GLint GLenum type
Definition: opengl_enc.c:105
#define MATROSKA_ID_TRACKNAME
Definition: matroska.h:96
int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
Set the given entry in *pm, overwriting an existing entry.
Definition: dict.c:70
#define MATROSKA_ID_SEEKENTRY
Definition: matroska.h:217
static void write_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost)
Definition: ffmpeg.c:650
static const char * format
Definition: movenc.c:47
Describe the class of an AVClass context structure.
Definition: log.h:67
#define MATROSKA_ID_EDITIONENTRY
Definition: matroska.h:250
#define FF_COMPLIANCE_NORMAL
Definition: avcodec.h:2904
#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:174
#define MATROSKA_ID_BLOCKGROUP
Definition: matroska.h:227
#define MATROSKA_ID_VIDEOPIXELHEIGHT
Definition: matroska.h:115
static int mkv_write_tracks(AVFormatContext *s)
Definition: matroskaenc.c:1287
Rational number (pair of numerator and denominator).
Definition: rational.h:58
Copyright (c) 2016 Neil Birkbeck neil.birkbeck@gmail.com
static void put_ebml_uint(AVIOContext *pb, unsigned int elementid, uint64_t val)
Definition: matroskaenc.c:239
#define MATROSKA_ID_CUEDURATION
Definition: matroska.h:198
#define MATROSKA_ID_CUETIME
Definition: matroska.h:191
Not part of ABI.
Definition: pixfmt.h:444
AVFieldOrder
Definition: avcodec.h:1660
Recommmends skipping the specified number of samples.
Definition: avcodec.h:1473
AVIOContext * dyn_bc
Definition: matroskaenc.c:120
AVMediaType
Definition: avutil.h:199
av_cold void av_lfg_init(AVLFG *c, unsigned int seed)
Definition: lfg.c:30
int64_t duration_offset
Definition: matroskaenc.c:132
#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:1894
static void put_ebml_id(AVIOContext *pb, unsigned int id)
Definition: matroskaenc.c:184
#define MATROSKA_ID_VIDEOCOLORMASTERINGMETA
Definition: matroska.h:144
misc parsing utilities
AVRational display_primaries[3][2]
CIE 1931 xy chromaticity coords of color primaries (r, g, b order).
static void put_ebml_sint(AVIOContext *pb, unsigned int elementid, int64_t val)
Definition: matroskaenc.c:252
#define MATROSKA_ID_ATTACHMENTS
Definition: matroska.h:61
static int64_t pts
Global timestamp for the audio frames.
void avio_wb16(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:452
int64_t * stream_duration_offsets
Definition: matroskaenc.c:159
#define MATROSKA_ID_CHAPTERDISPLAY
Definition: matroska.h:254
static int put_xiph_codecpriv(AVFormatContext *s, AVIOContext *pb, AVCodecParameters *par)
Definition: matroskaenc.c:601
int bits_per_raw_sample
This is the number of valid bits in each output sample.
Definition: avcodec.h:4042
#define MATROSKA_ID_FILENAME
Definition: matroska.h:244
int av_get_bytes_per_sample(enum AVSampleFormat sample_fmt)
Return number of bytes per sample.
Definition: samplefmt.c:106
#define MATROSKA_ID_BLOCKADDITIONAL
Definition: matroska.h:231
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:2507
static int put_flac_codecpriv(AVFormatContext *s, AVIOContext *pb, AVCodecParameters *par)
Definition: matroskaenc.c:638
#define MATROSKA_ID_VIDEOFIELDORDER
Definition: matroska.h:122
int64_t start
Definition: avformat.h:1298
static av_always_inline AVRational av_inv_q(AVRational q)
Invert a rational.
Definition: rational.h:159
const AVCRC * av_crc_get_table(AVCRCId crc_id)
Get an initialized standard CRC table.
Definition: crc.c:343
int sample_rate
Audio only.
Definition: avcodec.h:4097
#define MATROSKA_ID_VIDEOALPHAMODE
Definition: matroska.h:124
static int av_cmp_q(AVRational a, AVRational b)
Compare two rationals.
Definition: rational.h:89
static int mkv_write_trailer(AVFormatContext *s)
Definition: matroskaenc.c:2326
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:2476
attribute_deprecated int64_t convergence_duration
Definition: avcodec.h:1636
#define MATROSKA_ID_CUETRACK
Definition: matroska.h:195
#define MATROSKA_ID_SEEKPOSITION
Definition: matroska.h:221
int64_t last_track_timestamp[MAX_TRACKS]
Definition: matroskaenc.c:156
#define MATROSKA_ID_CODECDELAY
Definition: matroska.h:94
#define FF_DISABLE_DEPRECATION_WARNINGS
Definition: internal.h:80
#define MATROSKA_ID_CHAPTERTIMESTART
Definition: matroska.h:252
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:272
Utilties for rational number calculation.
Video is not stereoscopic (and metadata has to be there).
Definition: stereo3d.h:35
Views are packed in a checkerboard-like structure per pixel.
Definition: stereo3d.h:76
static void mkv_write_block(AVFormatContext *s, AVIOContext *pb, unsigned int blockid, AVPacket *pkt, int keyframe)
Definition: matroskaenc.c:1947
static int mkv_write_flush_packet(AVFormatContext *s, AVPacket *pkt)
Definition: matroskaenc.c:2305
int disposition
AV_DISPOSITION_* bit field.
Definition: avformat.h:947
static void put_ebml_void(AVIOContext *pb, uint64_t size)
Write a void element of a given size.
Definition: matroskaenc.c:292
AVRational time_base
time base in which the start/end timestamps are specified
Definition: avformat.h:1297
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
int den
Denominator.
Definition: rational.h:60
uint8_t pi<< 24) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_U8,(uint64_t)((*(constuint8_t *) pi-0x80U))<< 56) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8,(*(constuint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8,(*(constuint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16,(*(constint16_t *) pi >>8)+0x80) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S16,(uint64_t)(*(constint16_t *) pi)<< 48) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16,*(constint16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16,*(constint16_t *) pi *(1.0/(1<< 15))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32,(*(constint32_t *) pi >>24)+0x80) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S32,(uint64_t)(*(constint32_t *) pi)<< 32) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32,*(constint32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32,*(constint32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S64,(*(constint64_t *) pi >>56)+0x80) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S64,*(constint64_t *) pi *(1.0f/(INT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S64,*(constint64_t *) pi *(1.0/(INT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, av_clip_uint8(lrintf(*(constfloat *) pi *(1<< 7))+0x80)) CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, av_clip_int16(lrintf(*(constfloat *) pi *(1<< 15)))) CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, av_clipl_int32(llrintf(*(constfloat *) pi *(1U<< 31)))) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_FLT, llrintf(*(constfloat *) pi *(INT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, av_clip_uint8(lrint(*(constdouble *) pi *(1<< 7))+0x80)) CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, av_clip_int16(lrint(*(constdouble *) pi *(1<< 15)))) CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, av_clipl_int32(llrint(*(constdouble *) pi *(1U<< 31)))) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_DBL, llrint(*(constdouble *) pi *(INT64_C(1)<< 63)))#defineFMT_PAIR_FUNC(out, in) staticconv_func_type *constfmt_pair_to_conv_functions[AV_SAMPLE_FMT_NB *AV_SAMPLE_FMT_NB]={FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S64),};staticvoidcpy1(uint8_t **dst, constuint8_t **src, intlen){memcpy(*dst,*src, len);}staticvoidcpy2(uint8_t **dst, constuint8_t **src, intlen){memcpy(*dst,*src, 2 *len);}staticvoidcpy4(uint8_t **dst, constuint8_t **src, intlen){memcpy(*dst,*src, 4 *len);}staticvoidcpy8(uint8_t **dst, constuint8_t **src, intlen){memcpy(*dst,*src, 8 *len);}AudioConvert *swri_audio_convert_alloc(enumAVSampleFormatout_fmt, enumAVSampleFormatin_fmt, intchannels, constint *ch_map, intflags){AudioConvert *ctx;conv_func_type *f=fmt_pair_to_conv_functions[av_get_packed_sample_fmt(out_fmt)+AV_SAMPLE_FMT_NB *av_get_packed_sample_fmt(in_fmt)];if(!f) returnNULL;ctx=av_mallocz(sizeof(*ctx));if(!ctx) returnNULL;if(channels==1){in_fmt=av_get_planar_sample_fmt(in_fmt);out_fmt=av_get_planar_sample_fmt(out_fmt);}ctx->channels=channels;ctx->conv_f=f;ctx->ch_map=ch_map;if(in_fmt==AV_SAMPLE_FMT_U8||in_fmt==AV_SAMPLE_FMT_U8P) memset(ctx->silence, 0x80, sizeof(ctx->silence));if(out_fmt==in_fmt &&!ch_map){switch(av_get_bytes_per_sample(in_fmt)){case1:ctx->simd_f=cpy1;break;case2:ctx->simd_f=cpy2;break;case4:ctx->simd_f=cpy4;break;case8:ctx->simd_f=cpy8;break;}}if(HAVE_YASM &&1) swri_audio_convert_init_x86(ctx, out_fmt, in_fmt, channels);if(ARCH_ARM) swri_audio_convert_init_arm(ctx, out_fmt, in_fmt, channels);if(ARCH_AARCH64) swri_audio_convert_init_aarch64(ctx, out_fmt, in_fmt, channels);returnctx;}voidswri_audio_convert_free(AudioConvert **ctx){av_freep(ctx);}intswri_audio_convert(AudioConvert *ctx, AudioData *out, AudioData *in, intlen){intch;intoff=0;constintos=(out->planar?1:out->ch_count)*out->bps;unsignedmisaligned=0;av_assert0(ctx->channels==out->ch_count);if(ctx->in_simd_align_mask){intplanes=in->planar?in->ch_count:1;unsignedm=0;for(ch=0;ch< planes;ch++) m|=(intptr_t) in->ch[ch];misaligned|=m &ctx->in_simd_align_mask;}if(ctx->out_simd_align_mask){intplanes=out->planar?out->ch_count:1;unsignedm=0;for(ch=0;ch< planes;ch++) m|=(intptr_t) out->ch[ch];misaligned|=m &ctx->out_simd_align_mask;}if(ctx->simd_f &&!ctx->ch_map &&!misaligned){off=len &~15;av_assert1(off >=0);av_assert1(off<=len);av_assert2(ctx->channels==SWR_CH_MAX||!in->ch[ctx->channels]);if(off >0){if(out->planar==in->planar){intplanes=out->planar?out->ch_count:1;for(ch=0;ch< planes;ch++){ctx->simd_f(out-> ch ch
Definition: audioconvert.c:56
#define MATROSKA_ID_SEGMENT
Definition: matroska.h:53
int avpriv_mpeg4audio_get_config(MPEG4AudioConfig *c, const uint8_t *buf, int bit_size, int sync_extension)
Parse MPEG-4 systems extradata to retrieve audio configuration.
Definition: mpeg4audio.c:86
The optional settings (rendering instructions) that immediately follow the timestamp specifier of a W...
Definition: avcodec.h:1519
#define MATROSKA_ID_SEEKHEAD
Definition: matroska.h:60
#define EBML_ID_HEADER
Definition: matroska.h:33
A point in the output bytestream where a decoder can start decoding (i.e.
Definition: avio.h:114
mkv_attachments * attachments
Definition: matroskaenc.c:137
#define AVFMT_VARIABLE_FPS
Format allows variable fps.
Definition: avformat.h:489
ebml_master cluster
Definition: matroskaenc.c:129
#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:188
mkv_seekhead_entry * entries
Definition: matroskaenc.c:74
int len
static int mkv_write_native_codecprivate(AVFormatContext *s, AVCodecParameters *par, AVIOContext *dyn_cp)
Definition: matroskaenc.c:702
static int mkv_write_stereo_mode(AVFormatContext *s, AVIOContext *pb, AVStream *st, int mode, int *h_width, int *h_height)
Definition: matroskaenc.c:927
#define MATROSKA_ID_FILEUID
Definition: matroska.h:247
int ff_stream_add_bitstream_filter(AVStream *st, const char *name, const char *args)
Add a bitstream filter to a stream.
Definition: utils.c:5168
static int mkv_write_tag_targets(AVFormatContext *s, unsigned int elementid, unsigned int uid, ebml_master *tags, ebml_master *tag)
Definition: matroskaenc.c:1407
static uint8_t tmp[8]
Definition: des.c:38
void * priv_data
Format private data.
Definition: avformat.h:1366
#define MATROSKA_ID_CHAPTERUID
Definition: matroska.h:262
Views are on top of each other.
Definition: stereo3d.h:55
static AVCodec * c
static void write_header(FFV1Context *f)
Definition: ffv1enc.c:344
int bits_per_coded_sample
The number of bits per sample in the codedwords.
Definition: avcodec.h:4029
int64_t relative_pos
relative offset from the position of the cluster containing the block
Definition: matroskaenc.c:83
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
Definition: avcodec.h:4001
#define MATROSKA_ID_VIDEODISPLAYUNIT
Definition: matroska.h:120
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed...
Definition: avcodec.h:1606
static const AVOption options[]
Definition: matroskaenc.c:2524
#define EBML_ID_EBMLMAXSIZELENGTH
Definition: matroska.h:39
void avio_wb32(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:354
int64_t duration
Duration of the stream, in AV_TIME_BASE fractional seconds.
Definition: avformat.h:1433
#define MATROSKA_ID_CHAPSTRING
Definition: matroska.h:255
#define av_freep(p)
#define MATROSKA_ID_TAGSTRING
Definition: matroska.h:205
#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:339
#define MODE_MATROSKAv2
Definition: matroskaenc.c:110
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:1241
ebml_master info
Definition: matroskaenc.c:124
uint32_t codec_tag
Additional information about the codec (corresponds to the AVI FOURCC).
Definition: avcodec.h:3991
#define MODE_WEBM
Definition: matroskaenc.c:111
static int mkv_write_packet(AVFormatContext *s, AVPacket *pkt)
Definition: matroskaenc.c:2230
ebml_master tags
Definition: matroskaenc.c:122
#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:167
static mkv_cues * mkv_start_cues(int64_t segment_offset)
Definition: matroskaenc.c:508
int stream_index
Definition: avcodec.h:1609
int num_entries
Definition: matroskaenc.c:90
#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:926
static void end_ebml_master(AVIOContext *pb, ebml_master master)
Definition: matroskaenc.c:318
int64_t segment_offset
Definition: matroskaenc.c:128
#define MATROSKA_ID_ATTACHEDFILE
Definition: matroska.h:242
#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:309
mkv_seekhead * main_seekhead
Definition: matroskaenc.c:134
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_RL32
Definition: bytestream.h:87
This structure stores compressed data.
Definition: avcodec.h:1584
int64_t * stream_durations
Definition: matroskaenc.c:158
static void mkv_write_field_order(AVIOContext *pb, int mode, enum AVFieldOrder field_order)
Definition: matroskaenc.c:888
mode
Use these values in ebur128_init (or'ed).
Definition: ebur128.h:83
#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:2442
static void put_xiph_size(AVIOContext *pb, int size)
Definition: matroskaenc.c:370
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: avcodec.h:1600
Not part of ABI.
Definition: pixfmt.h:463
#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:248
AVIOContext * tags_bc
Definition: matroskaenc.c:121
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:239
#define FF_PUT_WAV_HEADER_FORCE_WAVEFORMATEX
Tell ff_put_wav_header() to use WAVEFORMATEX even for PCM codecs.
Definition: riff.h:53
const char * name
Definition: opengl_enc.c:103