FFmpeg  4.0
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;
99  int64_t ts_offset;
100 } mkv_track;
101 
102 typedef struct mkv_attachment {
104  uint32_t fileuid;
106 
107 typedef struct mkv_attachments {
111 
112 #define MODE_MATROSKAv2 0x01
113 #define MODE_WEBM 0x02
114 
115 /** Maximum number of tracks allowed in a Matroska file (with track numbers in
116  * range 1 to 126 (inclusive) */
117 #define MAX_TRACKS 126
118 
119 typedef struct MatroskaMuxContext {
120  const AVClass *class;
121  int mode;
130  int64_t segment_offset;
132  int64_t cluster_pos; ///< file offset of the current cluster
133  int64_t cluster_pts;
135  int64_t duration;
140 
142 
145 
148  int64_t cues_pos;
150  int is_dash;
152  int is_live;
154 
157 
158  int64_t last_track_timestamp[MAX_TRACKS];
159 
162 
165 
166 
167 /** 2 bytes * 3 for EBML IDs, 3 1-byte EBML lengths, 8 bytes for 64 bit
168  * offset, 4 bytes for target EBML ID */
169 #define MAX_SEEKENTRY_SIZE 21
170 
171 /** per-cuepoint-track - 5 1-byte EBML IDs, 5 1-byte EBML sizes, 4
172  * 8-byte uint max */
173 #define MAX_CUETRACKPOS_SIZE 42
174 
175 /** per-cuepoint - 2 1-byte EBML IDs, 2 1-byte EBML sizes, 8-byte uint max */
176 #define MAX_CUEPOINT_SIZE(num_tracks) 12 + MAX_CUETRACKPOS_SIZE * num_tracks
177 
178 /** Seek preroll value for opus */
179 #define OPUS_SEEK_PREROLL 80000000
180 
181 static int ebml_id_size(unsigned int id)
182 {
183  return (av_log2(id + 1) - 1) / 7 + 1;
184 }
185 
186 static void put_ebml_id(AVIOContext *pb, unsigned int id)
187 {
188  int i = ebml_id_size(id);
189  while (i--)
190  avio_w8(pb, (uint8_t)(id >> (i * 8)));
191 }
192 
193 /**
194  * Write an EBML size meaning "unknown size".
195  *
196  * @param bytes The number of bytes the size should occupy (maximum: 8).
197  */
198 static void put_ebml_size_unknown(AVIOContext *pb, int bytes)
199 {
200  av_assert0(bytes <= 8);
201  avio_w8(pb, 0x1ff >> bytes);
202  ffio_fill(pb, 0xff, bytes - 1);
203 }
204 
205 /**
206  * Calculate how many bytes are needed to represent a given number in EBML.
207  */
208 static int ebml_num_size(uint64_t num)
209 {
210  int bytes = 1;
211  while ((num + 1) >> bytes * 7)
212  bytes++;
213  return bytes;
214 }
215 
216 /**
217  * Write a number in EBML variable length format.
218  *
219  * @param bytes The number of bytes that need to be used to write the number.
220  * If zero, any number of bytes can be used.
221  */
222 static void put_ebml_num(AVIOContext *pb, uint64_t num, int bytes)
223 {
224  int i, needed_bytes = ebml_num_size(num);
225 
226  // sizes larger than this are currently undefined in EBML
227  av_assert0(num < (1ULL << 56) - 1);
228 
229  if (bytes == 0)
230  // don't care how many bytes are used, so use the min
231  bytes = needed_bytes;
232  // the bytes needed to write the given size would exceed the bytes
233  // that we need to use, so write unknown size. This shouldn't happen.
234  av_assert0(bytes >= needed_bytes);
235 
236  num |= 1ULL << bytes * 7;
237  for (i = bytes - 1; i >= 0; i--)
238  avio_w8(pb, (uint8_t)(num >> i * 8));
239 }
240 
241 static void put_ebml_uint(AVIOContext *pb, unsigned int elementid, uint64_t val)
242 {
243  int i, bytes = 1;
244  uint64_t tmp = val;
245  while (tmp >>= 8)
246  bytes++;
247 
248  put_ebml_id(pb, elementid);
249  put_ebml_num(pb, bytes, 0);
250  for (i = bytes - 1; i >= 0; i--)
251  avio_w8(pb, (uint8_t)(val >> i * 8));
252 }
253 
254 static void put_ebml_sint(AVIOContext *pb, unsigned int elementid, int64_t val)
255 {
256  int i, bytes = 1;
257  uint64_t tmp = 2*(val < 0 ? val^-1 : val);
258 
259  while (tmp>>=8) bytes++;
260 
261  put_ebml_id(pb, elementid);
262  put_ebml_num(pb, bytes, 0);
263  for (i = bytes - 1; i >= 0; i--)
264  avio_w8(pb, (uint8_t)(val >> i * 8));
265 }
266 
267 static void put_ebml_float(AVIOContext *pb, unsigned int elementid, double val)
268 {
269  put_ebml_id(pb, elementid);
270  put_ebml_num(pb, 8, 0);
271  avio_wb64(pb, av_double2int(val));
272 }
273 
274 static void put_ebml_binary(AVIOContext *pb, unsigned int elementid,
275  const void *buf, int size)
276 {
277  put_ebml_id(pb, elementid);
278  put_ebml_num(pb, size, 0);
279  avio_write(pb, buf, size);
280 }
281 
282 static void put_ebml_string(AVIOContext *pb, unsigned int elementid,
283  const char *str)
284 {
285  put_ebml_binary(pb, elementid, str, strlen(str));
286 }
287 
288 /**
289  * Write a void element of a given size. Useful for reserving space in
290  * the file to be written to later.
291  *
292  * @param size The number of bytes to reserve, which must be at least 2.
293  */
294 static void put_ebml_void(AVIOContext *pb, uint64_t size)
295 {
296  int64_t currentpos = avio_tell(pb);
297 
298  av_assert0(size >= 2);
299 
301  // we need to subtract the length needed to store the size from the
302  // size we need to reserve so 2 cases, we use 8 bytes to store the
303  // size if possible, 1 byte otherwise
304  if (size < 10)
305  put_ebml_num(pb, size - 2, 0);
306  else
307  put_ebml_num(pb, size - 9, 8);
308  ffio_fill(pb, 0, currentpos + size - avio_tell(pb));
309 }
310 
311 static ebml_master start_ebml_master(AVIOContext *pb, unsigned int elementid,
312  uint64_t expectedsize)
313 {
314  int bytes = expectedsize ? ebml_num_size(expectedsize) : 8;
315  put_ebml_id(pb, elementid);
316  put_ebml_size_unknown(pb, bytes);
317  return (ebml_master) {avio_tell(pb), bytes };
318 }
319 
321 {
322  int64_t pos = avio_tell(pb);
323 
324  if (avio_seek(pb, master.pos - master.sizebytes, SEEK_SET) < 0)
325  return;
326  put_ebml_num(pb, pos - master.pos, master.sizebytes);
327  avio_seek(pb, pos, SEEK_SET);
328 }
329 
331  ebml_master *master, unsigned int elementid, uint64_t expectedsize)
332 {
333  int ret;
334 
335  if ((ret = avio_open_dyn_buf(dyn_cp)) < 0)
336  return ret;
337 
338  if (pb->seekable & AVIO_SEEKABLE_NORMAL) {
339  *master = start_ebml_master(pb, elementid, expectedsize);
340  if (mkv->write_crc && mkv->mode != MODE_WEBM)
341  put_ebml_void(*dyn_cp, 6); /* Reserve space for CRC32 so position/size calculations using avio_tell() take it into account */
342  } else
343  *master = start_ebml_master(*dyn_cp, elementid, expectedsize);
344 
345  return 0;
346 }
347 
350 {
351  uint8_t *buf, crc[4];
352  int size, skip = 0;
353 
354  if (pb->seekable & AVIO_SEEKABLE_NORMAL) {
355  size = avio_close_dyn_buf(*dyn_cp, &buf);
356  if (mkv->write_crc && mkv->mode != MODE_WEBM) {
357  skip = 6; /* Skip reserved 6-byte long void element from the dynamic buffer. */
358  AV_WL32(crc, av_crc(av_crc_get_table(AV_CRC_32_IEEE_LE), UINT32_MAX, buf + skip, size - skip) ^ UINT32_MAX);
359  put_ebml_binary(pb, EBML_ID_CRC32, crc, sizeof(crc));
360  }
361  avio_write(pb, buf + skip, size - skip);
362  end_ebml_master(pb, master);
363  } else {
364  end_ebml_master(*dyn_cp, master);
365  size = avio_close_dyn_buf(*dyn_cp, &buf);
366  avio_write(pb, buf, size);
367  }
368  av_free(buf);
369  *dyn_cp = NULL;
370 }
371 
372 /**
373 * Complete ebml master whithout destroying the buffer, allowing for later updates
374 */
377 {
378  if (pb->seekable & AVIO_SEEKABLE_NORMAL) {
379 
380  uint8_t *buf;
381  int size = avio_get_dyn_buf(*dyn_cp, &buf);
382 
383  avio_write(pb, buf, size);
384  end_ebml_master(pb, master);
385  }
386 }
387 
388 static void put_xiph_size(AVIOContext *pb, int size)
389 {
390  ffio_fill(pb, 255, size / 255);
391  avio_w8(pb, size % 255);
392 }
393 
394 /**
395  * Free the members allocated in the mux context.
396  */
397 static void mkv_free(MatroskaMuxContext *mkv) {
398  uint8_t* buf;
399  if (mkv->dyn_bc) {
400  avio_close_dyn_buf(mkv->dyn_bc, &buf);
401  av_free(buf);
402  }
403  if (mkv->info_bc) {
404  avio_close_dyn_buf(mkv->info_bc, &buf);
405  av_free(buf);
406  }
407  if (mkv->tracks_bc) {
408  avio_close_dyn_buf(mkv->tracks_bc, &buf);
409  av_free(buf);
410  }
411  if (mkv->tags_bc) {
412  avio_close_dyn_buf(mkv->tags_bc, &buf);
413  av_free(buf);
414  }
415  if (mkv->main_seekhead) {
417  av_freep(&mkv->main_seekhead);
418  }
419  if (mkv->cues) {
420  av_freep(&mkv->cues->entries);
421  av_freep(&mkv->cues);
422  }
423  if (mkv->attachments) {
424  av_freep(&mkv->attachments->entries);
425  av_freep(&mkv->attachments);
426  }
427  av_freep(&mkv->tracks);
428  av_freep(&mkv->stream_durations);
430 }
431 
432 /**
433  * Initialize a mkv_seekhead element to be ready to index level 1 Matroska
434  * elements. If a maximum number of elements is specified, enough space
435  * will be reserved at the current file location to write a seek head of
436  * that size.
437  *
438  * @param segment_offset The absolute offset to the position in the file
439  * where the segment begins.
440  * @param numelements The maximum number of elements that will be indexed
441  * by this seek head, 0 if unlimited.
442  */
443 static mkv_seekhead *mkv_start_seekhead(AVIOContext *pb, int64_t segment_offset,
444  int numelements)
445 {
446  mkv_seekhead *new_seekhead = av_mallocz(sizeof(mkv_seekhead));
447  if (!new_seekhead)
448  return NULL;
449 
450  new_seekhead->segment_offset = segment_offset;
451 
452  if (numelements > 0) {
453  new_seekhead->filepos = avio_tell(pb);
454  // 21 bytes max for a seek entry, 10 bytes max for the SeekHead ID
455  // and size, 6 bytes for a CRC32 element, and 3 bytes to guarantee
456  // that an EBML void element will fit afterwards
457  new_seekhead->reserved_size = numelements * MAX_SEEKENTRY_SIZE + 19;
458  new_seekhead->max_entries = numelements;
459  put_ebml_void(pb, new_seekhead->reserved_size);
460  }
461  return new_seekhead;
462 }
463 
464 static int mkv_add_seekhead_entry(mkv_seekhead *seekhead, unsigned int elementid, uint64_t filepos)
465 {
466  mkv_seekhead_entry *entries = seekhead->entries;
467 
468  // don't store more elements than we reserved space for
469  if (seekhead->max_entries > 0 && seekhead->max_entries <= seekhead->num_entries)
470  return -1;
471 
472  entries = av_realloc_array(entries, seekhead->num_entries + 1, sizeof(mkv_seekhead_entry));
473  if (!entries)
474  return AVERROR(ENOMEM);
475  seekhead->entries = entries;
476 
477  seekhead->entries[seekhead->num_entries].elementid = elementid;
478  seekhead->entries[seekhead->num_entries++].segmentpos = filepos - seekhead->segment_offset;
479 
480  return 0;
481 }
482 
483 /**
484  * Write the seek head to the file and free it. If a maximum number of
485  * elements was specified to mkv_start_seekhead(), the seek head will
486  * be written at the location reserved for it. Otherwise, it is written
487  * at the current location in the file.
488  *
489  * @return The file offset where the seekhead was written,
490  * -1 if an error occurred.
491  */
493 {
494  AVIOContext *dyn_cp;
495  mkv_seekhead *seekhead = mkv->main_seekhead;
496  ebml_master metaseek, seekentry;
497  int64_t currentpos;
498  int i;
499 
500  currentpos = avio_tell(pb);
501 
502  if (seekhead->reserved_size > 0) {
503  if (avio_seek(pb, seekhead->filepos, SEEK_SET) < 0) {
504  currentpos = -1;
505  goto fail;
506  }
507  }
508 
509  if (start_ebml_master_crc32(pb, &dyn_cp, mkv, &metaseek, MATROSKA_ID_SEEKHEAD,
510  seekhead->reserved_size) < 0) {
511  currentpos = -1;
512  goto fail;
513  }
514 
515  for (i = 0; i < seekhead->num_entries; i++) {
516  mkv_seekhead_entry *entry = &seekhead->entries[i];
517 
519 
521  put_ebml_num(dyn_cp, ebml_id_size(entry->elementid), 0);
522  put_ebml_id(dyn_cp, entry->elementid);
523 
525  end_ebml_master(dyn_cp, seekentry);
526  }
527  end_ebml_master_crc32(pb, &dyn_cp, mkv, metaseek);
528 
529  if (seekhead->reserved_size > 0) {
530  uint64_t remaining = seekhead->filepos + seekhead->reserved_size - avio_tell(pb);
531  put_ebml_void(pb, remaining);
532  avio_seek(pb, currentpos, SEEK_SET);
533 
534  currentpos = seekhead->filepos;
535  }
536 fail:
538  av_freep(&mkv->main_seekhead);
539 
540  return currentpos;
541 }
542 
543 static mkv_cues *mkv_start_cues(int64_t segment_offset)
544 {
545  mkv_cues *cues = av_mallocz(sizeof(mkv_cues));
546  if (!cues)
547  return NULL;
548 
549  cues->segment_offset = segment_offset;
550  return cues;
551 }
552 
553 static int mkv_add_cuepoint(mkv_cues *cues, int stream, int tracknum, int64_t ts,
554  int64_t cluster_pos, int64_t relative_pos, int64_t duration)
555 {
556  mkv_cuepoint *entries = cues->entries;
557 
558  if (ts < 0)
559  return 0;
560 
561  entries = av_realloc_array(entries, cues->num_entries + 1, sizeof(mkv_cuepoint));
562  if (!entries)
563  return AVERROR(ENOMEM);
564  cues->entries = entries;
565 
566  cues->entries[cues->num_entries].pts = ts;
567  cues->entries[cues->num_entries].stream_idx = stream;
568  cues->entries[cues->num_entries].tracknum = tracknum;
569  cues->entries[cues->num_entries].cluster_pos = cluster_pos - cues->segment_offset;
570  cues->entries[cues->num_entries].relative_pos = relative_pos;
571  cues->entries[cues->num_entries++].duration = duration;
572 
573  return 0;
574 }
575 
576 static int64_t mkv_write_cues(AVFormatContext *s, mkv_cues *cues, mkv_track *tracks, int num_tracks)
577 {
578  MatroskaMuxContext *mkv = s->priv_data;
579  AVIOContext *dyn_cp, *pb = s->pb;
580  ebml_master cues_element;
581  int64_t currentpos;
582  int i, j, ret;
583 
584  currentpos = avio_tell(pb);
585  ret = start_ebml_master_crc32(pb, &dyn_cp, mkv, &cues_element, MATROSKA_ID_CUES, 0);
586  if (ret < 0)
587  return ret;
588 
589  for (i = 0; i < cues->num_entries; i++) {
590  ebml_master cuepoint, track_positions;
591  mkv_cuepoint *entry = &cues->entries[i];
592  uint64_t pts = entry->pts;
593  int ctp_nb = 0;
594 
595  // Calculate the number of entries, so we know the element size
596  for (j = 0; j < num_tracks; j++)
597  tracks[j].has_cue = 0;
598  for (j = 0; j < cues->num_entries - i && entry[j].pts == pts; j++) {
599  int tracknum = entry[j].stream_idx;
600  av_assert0(tracknum>=0 && tracknum<num_tracks);
601  if (tracks[tracknum].has_cue && s->streams[tracknum]->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE)
602  continue;
603  tracks[tracknum].has_cue = 1;
604  ctp_nb ++;
605  }
606 
607  cuepoint = start_ebml_master(dyn_cp, MATROSKA_ID_POINTENTRY, MAX_CUEPOINT_SIZE(ctp_nb));
608  put_ebml_uint(dyn_cp, MATROSKA_ID_CUETIME, pts);
609 
610  // put all the entries from different tracks that have the exact same
611  // timestamp into the same CuePoint
612  for (j = 0; j < num_tracks; j++)
613  tracks[j].has_cue = 0;
614  for (j = 0; j < cues->num_entries - i && entry[j].pts == pts; j++) {
615  int tracknum = entry[j].stream_idx;
616  av_assert0(tracknum>=0 && tracknum<num_tracks);
617  if (tracks[tracknum].has_cue && s->streams[tracknum]->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE)
618  continue;
619  tracks[tracknum].has_cue = 1;
621  put_ebml_uint(dyn_cp, MATROSKA_ID_CUETRACK , entry[j].tracknum );
622  put_ebml_uint(dyn_cp, MATROSKA_ID_CUECLUSTERPOSITION , entry[j].cluster_pos);
623  put_ebml_uint(dyn_cp, MATROSKA_ID_CUERELATIVEPOSITION, entry[j].relative_pos);
624  if (entry[j].duration != -1)
625  put_ebml_uint(dyn_cp, MATROSKA_ID_CUEDURATION , entry[j].duration);
626  end_ebml_master(dyn_cp, track_positions);
627  }
628  i += j - 1;
629  end_ebml_master(dyn_cp, cuepoint);
630  }
631  end_ebml_master_crc32(pb, &dyn_cp, mkv, cues_element);
632 
633  return currentpos;
634 }
635 
637 {
638  const uint8_t *header_start[3];
639  int header_len[3];
640  int first_header_size;
641  int j;
642 
643  if (par->codec_id == AV_CODEC_ID_VORBIS)
644  first_header_size = 30;
645  else
646  first_header_size = 42;
647 
649  first_header_size, header_start, header_len) < 0) {
650  av_log(s, AV_LOG_ERROR, "Extradata corrupt.\n");
651  return -1;
652  }
653 
654  avio_w8(pb, 2); // number packets - 1
655  for (j = 0; j < 2; j++) {
656  put_xiph_size(pb, header_len[j]);
657  }
658  for (j = 0; j < 3; j++)
659  avio_write(pb, header_start[j], header_len[j]);
660 
661  return 0;
662 }
663 
665 {
666  if (par->extradata && par->extradata_size == 2)
667  avio_write(pb, par->extradata, 2);
668  else
669  avio_wl16(pb, 0x403); // fallback to the version mentioned in matroska specs
670  return 0;
671 }
672 
674  AVIOContext *pb, AVCodecParameters *par)
675 {
676  int write_comment = (par->channel_layout &&
677  !(par->channel_layout & ~0x3ffffULL) &&
679  int ret = ff_flac_write_header(pb, par->extradata, par->extradata_size,
680  !write_comment);
681 
682  if (ret < 0)
683  return ret;
684 
685  if (write_comment) {
686  const char *vendor = (s->flags & AVFMT_FLAG_BITEXACT) ?
687  "Lavf" : LIBAVFORMAT_IDENT;
688  AVDictionary *dict = NULL;
689  uint8_t buf[32], *data, *p;
690  int64_t len;
691 
692  snprintf(buf, sizeof(buf), "0x%"PRIx64, par->channel_layout);
693  av_dict_set(&dict, "WAVEFORMATEXTENSIBLE_CHANNEL_MASK", buf, 0);
694 
695  len = ff_vorbiscomment_length(dict, vendor);
696  if (len >= ((1<<24) - 4))
697  return AVERROR(EINVAL);
698 
699  data = av_malloc(len + 4);
700  if (!data) {
701  av_dict_free(&dict);
702  return AVERROR(ENOMEM);
703  }
704 
705  data[0] = 0x84;
706  AV_WB24(data + 1, len);
707 
708  p = data + 4;
709  ff_vorbiscomment_write(&p, &dict, vendor);
710 
711  avio_write(pb, data, len + 4);
712 
713  av_freep(&data);
714  av_dict_free(&dict);
715  }
716 
717  return 0;
718 }
719 
720 static int get_aac_sample_rates(AVFormatContext *s, uint8_t *extradata, int extradata_size,
721  int *sample_rate, int *output_sample_rate)
722 {
723  MPEG4AudioConfig mp4ac;
724  int ret;
725 
726  ret = avpriv_mpeg4audio_get_config(&mp4ac, extradata,
727  extradata_size * 8, 1);
728  /* Don't abort if the failure is because of missing extradata. Assume in that
729  * case a bitstream filter will provide the muxer with the extradata in the
730  * first packet.
731  * Abort however if s->pb is not seekable, as we would not be able to seek back
732  * to write the sample rate elements once the extradata shows up, anyway. */
733  if (ret < 0 && (extradata_size || !(s->pb->seekable & AVIO_SEEKABLE_NORMAL))) {
734  av_log(s, AV_LOG_ERROR,
735  "Error parsing AAC extradata, unable to determine samplerate.\n");
736  return AVERROR(EINVAL);
737  }
738 
739  if (ret < 0) {
740  /* This will only happen when this function is called while writing the
741  * header and no extradata is available. The space for this element has
742  * to be reserved for when this function is called again after the
743  * extradata shows up in the first packet, as there's no way to know if
744  * output_sample_rate will be different than sample_rate or not. */
745  *output_sample_rate = *sample_rate;
746  } else {
747  *sample_rate = mp4ac.sample_rate;
748  *output_sample_rate = mp4ac.ext_sample_rate;
749  }
750  return 0;
751 }
752 
754  AVCodecParameters *par,
755  AVIOContext *dyn_cp)
756 {
757  switch (par->codec_id) {
758  case AV_CODEC_ID_VORBIS:
759  case AV_CODEC_ID_THEORA:
760  return put_xiph_codecpriv(s, dyn_cp, par);
761  case AV_CODEC_ID_FLAC:
762  return put_flac_codecpriv(s, dyn_cp, par);
763  case AV_CODEC_ID_WAVPACK:
764  return put_wv_codecpriv(dyn_cp, par);
765  case AV_CODEC_ID_H264:
766  return ff_isom_write_avcc(dyn_cp, par->extradata,
767  par->extradata_size);
768  case AV_CODEC_ID_HEVC:
769  ff_isom_write_hvcc(dyn_cp, par->extradata,
770  par->extradata_size, 0);
771  return 0;
772  case AV_CODEC_ID_ALAC:
773  if (par->extradata_size < 36) {
774  av_log(s, AV_LOG_ERROR,
775  "Invalid extradata found, ALAC expects a 36-byte "
776  "QuickTime atom.");
777  return AVERROR_INVALIDDATA;
778  } else
779  avio_write(dyn_cp, par->extradata + 12,
780  par->extradata_size - 12);
781  break;
782  case AV_CODEC_ID_AAC:
783  if (par->extradata_size)
784  avio_write(dyn_cp, par->extradata, par->extradata_size);
785  else
786  put_ebml_void(pb, MAX_PCE_SIZE + 2 + 4);
787  break;
788  default:
789  if (par->codec_id == AV_CODEC_ID_PRORES &&
791  avio_wl32(dyn_cp, par->codec_tag);
792  } else if (par->extradata_size && par->codec_id != AV_CODEC_ID_TTA)
793  avio_write(dyn_cp, par->extradata, par->extradata_size);
794  }
795 
796  return 0;
797 }
798 
800  AVCodecParameters *par,
801  int native_id, int qt_id)
802 {
803  AVIOContext *dyn_cp;
804  uint8_t *codecpriv;
805  int ret, codecpriv_size;
806 
807  ret = avio_open_dyn_buf(&dyn_cp);
808  if (ret < 0)
809  return ret;
810 
811  if (native_id) {
812  ret = mkv_write_native_codecprivate(s, pb, par, dyn_cp);
813  } else if (par->codec_type == AVMEDIA_TYPE_VIDEO) {
814  if (qt_id) {
815  if (!par->codec_tag)
817  par->codec_id);
820  ) {
821  int i;
822  avio_wb32(dyn_cp, 0x5a + par->extradata_size);
823  avio_wl32(dyn_cp, par->codec_tag);
824  for(i = 0; i < 0x5a - 8; i++)
825  avio_w8(dyn_cp, 0);
826  }
827  avio_write(dyn_cp, par->extradata, par->extradata_size);
828  } else {
830  av_log(s, AV_LOG_WARNING, "codec %s is not supported by this format\n",
831  avcodec_get_name(par->codec_id));
832 
833  if (!par->codec_tag)
835  par->codec_id);
836  if (!par->codec_tag && par->codec_id != AV_CODEC_ID_RAWVIDEO) {
837  av_log(s, AV_LOG_ERROR, "No bmp codec tag found for codec %s\n",
838  avcodec_get_name(par->codec_id));
839  ret = AVERROR(EINVAL);
840  }
841 
842  ff_put_bmp_header(dyn_cp, par, 0, 0);
843  }
844  } else if (par->codec_type == AVMEDIA_TYPE_AUDIO) {
845  unsigned int tag;
847  if (!tag) {
848  av_log(s, AV_LOG_ERROR, "No wav codec tag found for codec %s\n",
849  avcodec_get_name(par->codec_id));
850  ret = AVERROR(EINVAL);
851  }
852  if (!par->codec_tag)
853  par->codec_tag = tag;
854 
856  }
857 
858  codecpriv_size = avio_close_dyn_buf(dyn_cp, &codecpriv);
859  if (codecpriv_size)
861  codecpriv_size);
862  av_free(codecpriv);
863  return ret;
864 }
865 
867  AVIOContext *dyn_cp;
868  uint8_t *colorinfo_ptr;
869  int side_data_size = 0;
870  int ret, colorinfo_size;
871  const uint8_t *side_data;
872 
873  ret = avio_open_dyn_buf(&dyn_cp);
874  if (ret < 0)
875  return ret;
876 
877  if (par->color_trc != AVCOL_TRC_UNSPECIFIED &&
878  par->color_trc < AVCOL_TRC_NB) {
880  par->color_trc);
881  }
882  if (par->color_space != AVCOL_SPC_UNSPECIFIED &&
883  par->color_space < AVCOL_SPC_NB) {
885  }
887  par->color_primaries < AVCOL_PRI_NB) {
889  }
890  if (par->color_range != AVCOL_RANGE_UNSPECIFIED &&
891  par->color_range < AVCOL_RANGE_NB) {
893  }
896  int xpos, ypos;
897 
898  avcodec_enum_to_chroma_pos(&xpos, &ypos, par->chroma_location);
899  put_ebml_uint(dyn_cp, MATROSKA_ID_VIDEOCOLORCHROMASITINGHORZ, (xpos >> 7) + 1);
900  put_ebml_uint(dyn_cp, MATROSKA_ID_VIDEOCOLORCHROMASITINGVERT, (ypos >> 7) + 1);
901  }
902 
904  &side_data_size);
905  if (side_data_size) {
906  const AVContentLightMetadata *metadata =
907  (const AVContentLightMetadata*)side_data;
910  }
911 
913  &side_data_size);
914  if (side_data_size == sizeof(AVMasteringDisplayMetadata)) {
915  ebml_master meta_element = start_ebml_master(
917  const AVMasteringDisplayMetadata *metadata =
918  (const AVMasteringDisplayMetadata*)side_data;
919  if (metadata->has_primaries) {
921  av_q2d(metadata->display_primaries[0][0]));
923  av_q2d(metadata->display_primaries[0][1]));
925  av_q2d(metadata->display_primaries[1][0]));
927  av_q2d(metadata->display_primaries[1][1]));
929  av_q2d(metadata->display_primaries[2][0]));
931  av_q2d(metadata->display_primaries[2][1]));
933  av_q2d(metadata->white_point[0]));
935  av_q2d(metadata->white_point[1]));
936  }
937  if (metadata->has_luminance) {
939  av_q2d(metadata->max_luminance));
941  av_q2d(metadata->min_luminance));
942  }
943  end_ebml_master(dyn_cp, meta_element);
944  }
945 
946  colorinfo_size = avio_close_dyn_buf(dyn_cp, &colorinfo_ptr);
947  if (colorinfo_size) {
948  ebml_master colorinfo = start_ebml_master(pb, MATROSKA_ID_VIDEOCOLOR, colorinfo_size);
949  avio_write(pb, colorinfo_ptr, colorinfo_size);
950  end_ebml_master(pb, colorinfo);
951  }
952  av_free(colorinfo_ptr);
953  return 0;
954 }
955 
957  AVStream *st)
958 {
959  AVIOContext b;
960  AVIOContext *dyn_cp;
961  int side_data_size = 0;
962  int ret, projection_size;
963  uint8_t *projection_ptr;
964  uint8_t private[20];
965 
966  const AVSphericalMapping *spherical =
968  &side_data_size);
969 
970  if (!side_data_size)
971  return 0;
972 
973  ret = avio_open_dyn_buf(&dyn_cp);
974  if (ret < 0)
975  return ret;
976 
977  switch (spherical->projection) {
981  break;
983  ffio_init_context(&b, private, 20, 1, NULL, NULL, NULL, NULL);
986  avio_wb32(&b, 0); // version + flags
987  avio_wb32(&b, spherical->bound_top);
988  avio_wb32(&b, spherical->bound_bottom);
989  avio_wb32(&b, spherical->bound_left);
990  avio_wb32(&b, spherical->bound_right);
992  private, avio_tell(&b));
993  break;
995  ffio_init_context(&b, private, 12, 1, NULL, NULL, NULL, NULL);
998  avio_wb32(&b, 0); // version + flags
999  avio_wb32(&b, 0); // layout
1000  avio_wb32(&b, spherical->padding);
1002  private, avio_tell(&b));
1003  break;
1004  default:
1005  av_log(s, AV_LOG_WARNING, "Unknown projection type\n");
1006  goto end;
1007  }
1008 
1009  if (spherical->yaw)
1011  (double) spherical->yaw / (1 << 16));
1012  if (spherical->pitch)
1014  (double) spherical->pitch / (1 << 16));
1015  if (spherical->roll)
1017  (double) spherical->roll / (1 << 16));
1018 
1019 end:
1020  projection_size = avio_close_dyn_buf(dyn_cp, &projection_ptr);
1021  if (projection_size) {
1022  ebml_master projection = start_ebml_master(pb,
1024  projection_size);
1025  avio_write(pb, projection_ptr, projection_size);
1026  end_ebml_master(pb, projection);
1027  }
1028  av_freep(&projection_ptr);
1029 
1030  return 0;
1031 }
1032 
1034  enum AVFieldOrder field_order)
1035 {
1036  switch (field_order) {
1037  case AV_FIELD_UNKNOWN:
1038  break;
1039  case AV_FIELD_PROGRESSIVE:
1042  break;
1043  case AV_FIELD_TT:
1044  case AV_FIELD_BB:
1045  case AV_FIELD_TB:
1046  case AV_FIELD_BT:
1049  if (mode != MODE_WEBM) {
1050  switch (field_order) {
1051  case AV_FIELD_TT:
1054  break;
1055  case AV_FIELD_BB:
1058  break;
1059  case AV_FIELD_TB:
1062  break;
1063  case AV_FIELD_BT:
1066  break;
1067  }
1068  }
1069  }
1070 }
1071 
1073  AVStream *st, int mode, int *h_width, int *h_height)
1074 {
1075  int i;
1076  int ret = 0;
1079 
1080  *h_width = 1;
1081  *h_height = 1;
1082  // convert metadata into proper side data and add it to the stream
1083  if ((tag = av_dict_get(st->metadata, "stereo_mode", NULL, 0)) ||
1084  (tag = av_dict_get( s->metadata, "stereo_mode", NULL, 0))) {
1085  int stereo_mode = atoi(tag->value);
1086 
1087  for (i=0; i<MATROSKA_VIDEO_STEREOMODE_TYPE_NB; i++)
1088  if (!strcmp(tag->value, ff_matroska_video_stereo_mode[i])){
1089  stereo_mode = i;
1090  break;
1091  }
1092 
1093  if (stereo_mode < MATROSKA_VIDEO_STEREOMODE_TYPE_NB &&
1094  stereo_mode != 10 && stereo_mode != 12) {
1095  int ret = ff_mkv_stereo3d_conv(st, stereo_mode);
1096  if (ret < 0)
1097  return ret;
1098  }
1099  }
1100 
1101  // iterate to find the stereo3d side data
1102  for (i = 0; i < st->nb_side_data; i++) {
1103  AVPacketSideData sd = st->side_data[i];
1104  if (sd.type == AV_PKT_DATA_STEREO3D) {
1105  AVStereo3D *stereo = (AVStereo3D *)sd.data;
1106 
1107  switch (stereo->type) {
1108  case AV_STEREO3D_2D:
1110  break;
1112  format = (stereo->flags & AV_STEREO3D_FLAG_INVERT)
1115  *h_width = 2;
1116  break;
1117  case AV_STEREO3D_TOPBOTTOM:
1119  if (stereo->flags & AV_STEREO3D_FLAG_INVERT)
1120  format--;
1121  *h_height = 2;
1122  break;
1125  if (stereo->flags & AV_STEREO3D_FLAG_INVERT)
1126  format--;
1127  break;
1128  case AV_STEREO3D_LINES:
1130  if (stereo->flags & AV_STEREO3D_FLAG_INVERT)
1131  format--;
1132  *h_height = 2;
1133  break;
1134  case AV_STEREO3D_COLUMNS:
1136  if (stereo->flags & AV_STEREO3D_FLAG_INVERT)
1137  format--;
1138  *h_width = 2;
1139  break;
1142  if (stereo->flags & AV_STEREO3D_FLAG_INVERT)
1143  format++;
1144  break;
1145  }
1146  break;
1147  }
1148  }
1149 
1150  if (format == MATROSKA_VIDEO_STEREOMODE_TYPE_NB)
1151  return ret;
1152 
1153  // if webm, do not write unsupported modes
1154  if ((mode == MODE_WEBM &&
1157  || format >= MATROSKA_VIDEO_STEREOMODE_TYPE_NB) {
1158  av_log(s, AV_LOG_ERROR,
1159  "The specified stereo mode is not valid.\n");
1161  return AVERROR(EINVAL);
1162  }
1163 
1164  // write StereoMode if format is valid
1166 
1167  return ret;
1168 }
1169 
1171  int i, AVIOContext *pb, int default_stream_exists)
1172 {
1173  AVStream *st = s->streams[i];
1174  AVCodecParameters *par = st->codecpar;
1175  ebml_master subinfo, track;
1176  int native_id = 0;
1177  int qt_id = 0;
1179  int sample_rate = par->sample_rate;
1180  int output_sample_rate = 0;
1181  int display_width_div = 1;
1182  int display_height_div = 1;
1183  int j, ret;
1185 
1186  if (par->codec_type == AVMEDIA_TYPE_ATTACHMENT) {
1187  mkv->have_attachments = 1;
1188  return 0;
1189  }
1190 
1191  if (par->codec_type == AVMEDIA_TYPE_AUDIO) {
1192  if (!bit_depth && par->codec_id != AV_CODEC_ID_ADPCM_G726) {
1193  if (par->bits_per_raw_sample)
1194  bit_depth = par->bits_per_raw_sample;
1195  else
1196  bit_depth = av_get_bytes_per_sample(par->format) << 3;
1197  }
1198  if (!bit_depth)
1199  bit_depth = par->bits_per_coded_sample;
1200  }
1201 
1202  if (par->codec_id == AV_CODEC_ID_AAC) {
1203  ret = get_aac_sample_rates(s, par->extradata, par->extradata_size, &sample_rate,
1204  &output_sample_rate);
1205  if (ret < 0)
1206  return ret;
1207  }
1208 
1209  track = start_ebml_master(pb, MATROSKA_ID_TRACKENTRY, 0);
1211  mkv->is_dash ? mkv->dash_track_number : i + 1);
1213  mkv->is_dash ? mkv->dash_track_number : i + 1);
1214  put_ebml_uint (pb, MATROSKA_ID_TRACKFLAGLACING , 0); // no lacing (yet)
1215 
1216  if ((tag = av_dict_get(st->metadata, "title", NULL, 0)))
1218  tag = av_dict_get(st->metadata, "language", NULL, 0);
1219  if (mkv->mode != MODE_WEBM || par->codec_id != AV_CODEC_ID_WEBVTT) {
1220  put_ebml_string(pb, MATROSKA_ID_TRACKLANGUAGE, tag && tag->value ? tag->value:"und");
1221  } else if (tag && tag->value) {
1223  }
1224 
1225  // The default value for TRACKFLAGDEFAULT is 1, so add element
1226  // if we need to clear it.
1227  if (default_stream_exists && !(st->disposition & AV_DISPOSITION_DEFAULT))
1229 
1232 
1233  if (mkv->mode == MODE_WEBM && par->codec_id == AV_CODEC_ID_WEBVTT) {
1234  const char *codec_id;
1236  codec_id = "D_WEBVTT/CAPTIONS";
1237  native_id = MATROSKA_TRACK_TYPE_SUBTITLE;
1238  } else if (st->disposition & AV_DISPOSITION_DESCRIPTIONS) {
1239  codec_id = "D_WEBVTT/DESCRIPTIONS";
1240  native_id = MATROSKA_TRACK_TYPE_METADATA;
1241  } else if (st->disposition & AV_DISPOSITION_METADATA) {
1242  codec_id = "D_WEBVTT/METADATA";
1243  native_id = MATROSKA_TRACK_TYPE_METADATA;
1244  } else {
1245  codec_id = "D_WEBVTT/SUBTITLES";
1246  native_id = MATROSKA_TRACK_TYPE_SUBTITLE;
1247  }
1248  put_ebml_string(pb, MATROSKA_ID_CODECID, codec_id);
1249  } else {
1250  // look for a codec ID string specific to mkv to use,
1251  // if none are found, use AVI codes
1252  if (par->codec_id != AV_CODEC_ID_RAWVIDEO || par->codec_tag) {
1253  for (j = 0; ff_mkv_codec_tags[j].id != AV_CODEC_ID_NONE; j++) {
1254  if (ff_mkv_codec_tags[j].id == par->codec_id && par->codec_id != AV_CODEC_ID_FFV1) {
1256  native_id = 1;
1257  break;
1258  }
1259  }
1260  } else {
1261  if (mkv->allow_raw_vfw) {
1262  native_id = 0;
1263  } else {
1264  av_log(s, AV_LOG_ERROR, "Raw RGB is not supported Natively in Matroska, you can use AVI or NUT or\n"
1265  "If you would like to store it anyway using VFW mode, enable allow_raw_vfw (-allow_raw_vfw 1)\n");
1266  return AVERROR(EINVAL);
1267  }
1268  }
1269  }
1270 
1271  if (par->codec_type == AVMEDIA_TYPE_AUDIO && par->initial_padding && par->codec_id == AV_CODEC_ID_OPUS) {
1272  int64_t codecdelay = av_rescale_q(par->initial_padding,
1273  (AVRational){ 1, 48000 },
1274  (AVRational){ 1, 1000000000 });
1275  if (codecdelay < 0) {
1276  av_log(s, AV_LOG_ERROR, "Initial padding is invalid\n");
1277  return AVERROR(EINVAL);
1278  }
1279 // mkv->tracks[i].ts_offset = av_rescale_q(par->initial_padding,
1280 // (AVRational){ 1, par->sample_rate },
1281 // st->time_base);
1282 
1283  put_ebml_uint(pb, MATROSKA_ID_CODECDELAY, codecdelay);
1284  }
1285  if (par->codec_id == AV_CODEC_ID_OPUS) {
1287  }
1288 
1289  if (mkv->mode == MODE_WEBM && !(par->codec_id == AV_CODEC_ID_VP8 ||
1290  par->codec_id == AV_CODEC_ID_VP9 ||
1291  par->codec_id == AV_CODEC_ID_OPUS ||
1292  par->codec_id == AV_CODEC_ID_VORBIS ||
1293  par->codec_id == AV_CODEC_ID_WEBVTT)) {
1294  av_log(s, AV_LOG_ERROR,
1295  "Only VP8 or VP9 video and Vorbis or Opus audio and WebVTT subtitles are supported for WebM.\n");
1296  return AVERROR(EINVAL);
1297  }
1298 
1299  switch (par->codec_type) {
1300  case AVMEDIA_TYPE_VIDEO:
1301  mkv->have_video = 1;
1303 
1304  if( st->avg_frame_rate.num > 0 && st->avg_frame_rate.den > 0
1305  && av_cmp_q(av_inv_q(st->avg_frame_rate), st->time_base) > 0)
1307  else
1309 
1310  if (!native_id &&
1313  par->codec_id == AV_CODEC_ID_SVQ1 ||
1314  par->codec_id == AV_CODEC_ID_SVQ3 ||
1315  par->codec_id == AV_CODEC_ID_CINEPAK))
1316  qt_id = 1;
1317 
1318  if (qt_id)
1319  put_ebml_string(pb, MATROSKA_ID_CODECID, "V_QUICKTIME");
1320  else if (!native_id) {
1321  // if there is no mkv-specific codec ID, use VFW mode
1322  put_ebml_string(pb, MATROSKA_ID_CODECID, "V_MS/VFW/FOURCC");
1323  mkv->tracks[i].write_dts = 1;
1325  }
1326 
1327  subinfo = start_ebml_master(pb, MATROSKA_ID_TRACKVIDEO, 0);
1328 
1331 
1332  mkv_write_field_order(pb, mkv->mode, par->field_order);
1333 
1334  // check both side data and metadata for stereo information,
1335  // write the result to the bitstream if any is found
1336  ret = mkv_write_stereo_mode(s, pb, st, mkv->mode,
1337  &display_width_div,
1338  &display_height_div);
1339  if (ret < 0)
1340  return ret;
1341 
1342  if (((tag = av_dict_get(st->metadata, "alpha_mode", NULL, 0)) && atoi(tag->value)) ||
1343  ((tag = av_dict_get( s->metadata, "alpha_mode", NULL, 0)) && atoi(tag->value)) ||
1344  (par->format == AV_PIX_FMT_YUVA420P)) {
1346  }
1347 
1348  // write DisplayWidth and DisplayHeight, they contain the size of
1349  // a single source view and/or the display aspect ratio
1350  if (st->sample_aspect_ratio.num) {
1351  int64_t d_width = av_rescale(par->width, st->sample_aspect_ratio.num, st->sample_aspect_ratio.den);
1352  if (d_width > INT_MAX) {
1353  av_log(s, AV_LOG_ERROR, "Overflow in display width\n");
1354  return AVERROR(EINVAL);
1355  }
1356  if (d_width != par->width || display_width_div != 1 || display_height_div != 1) {
1357  if (mkv->mode == MODE_WEBM || display_width_div != 1 || display_height_div != 1) {
1358  put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYWIDTH , d_width / display_width_div);
1359  put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYHEIGHT, par->height / display_height_div);
1360  } else {
1361  AVRational display_aspect_ratio;
1362  av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
1363  par->width * (int64_t)st->sample_aspect_ratio.num,
1364  par->height * (int64_t)st->sample_aspect_ratio.den,
1365  1024 * 1024);
1366  put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYWIDTH, display_aspect_ratio.num);
1367  put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYHEIGHT, display_aspect_ratio.den);
1369  }
1370  }
1371  } else if (display_width_div != 1 || display_height_div != 1) {
1372  put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYWIDTH , par->width / display_width_div);
1373  put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYHEIGHT, par->height / display_height_div);
1374  } else if (mkv->mode != MODE_WEBM)
1376 
1377  if (par->codec_id == AV_CODEC_ID_RAWVIDEO) {
1378  uint32_t color_space = av_le2ne32(par->codec_tag);
1379  put_ebml_binary(pb, MATROSKA_ID_VIDEOCOLORSPACE, &color_space, sizeof(color_space));
1380  }
1381  ret = mkv_write_video_color(pb, par, st);
1382  if (ret < 0)
1383  return ret;
1384  ret = mkv_write_video_projection(s, pb, st);
1385  if (ret < 0)
1386  return ret;
1387  end_ebml_master(pb, subinfo);
1388  break;
1389 
1390  case AVMEDIA_TYPE_AUDIO:
1392 
1393  if (!native_id)
1394  // no mkv-specific ID, use ACM mode
1395  put_ebml_string(pb, MATROSKA_ID_CODECID, "A_MS/ACM");
1396 
1397  subinfo = start_ebml_master(pb, MATROSKA_ID_TRACKAUDIO, 0);
1399 
1400  mkv->tracks[i].sample_rate_offset = avio_tell(pb);
1401  put_ebml_float (pb, MATROSKA_ID_AUDIOSAMPLINGFREQ, sample_rate);
1402  if (output_sample_rate)
1403  put_ebml_float(pb, MATROSKA_ID_AUDIOOUTSAMPLINGFREQ, output_sample_rate);
1404  if (bit_depth)
1405  put_ebml_uint(pb, MATROSKA_ID_AUDIOBITDEPTH, bit_depth);
1406  end_ebml_master(pb, subinfo);
1407  break;
1408 
1409  case AVMEDIA_TYPE_SUBTITLE:
1410  if (!native_id) {
1411  av_log(s, AV_LOG_ERROR, "Subtitle codec %d is not supported.\n", par->codec_id);
1412  return AVERROR(ENOSYS);
1413  }
1414 
1415  if (mkv->mode != MODE_WEBM || par->codec_id != AV_CODEC_ID_WEBVTT)
1416  native_id = MATROSKA_TRACK_TYPE_SUBTITLE;
1417 
1418  put_ebml_uint(pb, MATROSKA_ID_TRACKTYPE, native_id);
1419  break;
1420  default:
1421  av_log(s, AV_LOG_ERROR, "Only audio, video, and subtitles are supported for Matroska.\n");
1422  return AVERROR(EINVAL);
1423  }
1424 
1425  if (mkv->mode != MODE_WEBM || par->codec_id != AV_CODEC_ID_WEBVTT) {
1426  mkv->tracks[i].codecpriv_offset = avio_tell(pb);
1427  ret = mkv_write_codecprivate(s, pb, par, native_id, qt_id);
1428  if (ret < 0)
1429  return ret;
1430  }
1431 
1432  end_ebml_master(pb, track);
1433 
1434  return 0;
1435 }
1436 
1438 {
1439  MatroskaMuxContext *mkv = s->priv_data;
1440  AVIOContext *pb = s->pb;
1441  int i, ret, default_stream_exists = 0;
1442 
1444  if (ret < 0)
1445  return ret;
1446 
1447  ret = start_ebml_master_crc32(pb, &mkv->tracks_bc, mkv, &mkv->tracks_master, MATROSKA_ID_TRACKS, 0);
1448  if (ret < 0)
1449  return ret;
1450 
1451  for (i = 0; i < s->nb_streams; i++) {
1452  AVStream *st = s->streams[i];
1453  default_stream_exists |= st->disposition & AV_DISPOSITION_DEFAULT;
1454  }
1455  for (i = 0; i < s->nb_streams; i++) {
1456  ret = mkv_write_track(s, mkv, i, mkv->tracks_bc, default_stream_exists);
1457  if (ret < 0)
1458  return ret;
1459  }
1460 
1461  if ((pb->seekable & AVIO_SEEKABLE_NORMAL) && !mkv->is_live)
1463  else
1464  end_ebml_master_crc32(pb, &mkv->tracks_bc, mkv, mkv->tracks_master);
1465 
1466  return 0;
1467 }
1468 
1470 {
1471  MatroskaMuxContext *mkv = s->priv_data;
1472  AVIOContext *dyn_cp, *pb = s->pb;
1473  ebml_master chapters, editionentry;
1474  AVRational scale = {1, 1E9};
1475  int i, ret;
1476 
1477  if (!s->nb_chapters || mkv->wrote_chapters)
1478  return 0;
1479 
1481  if (ret < 0) return ret;
1482 
1483  ret = start_ebml_master_crc32(pb, &dyn_cp, mkv, &chapters, MATROSKA_ID_CHAPTERS, 0);
1484  if (ret < 0) return ret;
1485 
1486  editionentry = start_ebml_master(dyn_cp, MATROSKA_ID_EDITIONENTRY, 0);
1487  if (mkv->mode != MODE_WEBM) {
1490  }
1491  for (i = 0; i < s->nb_chapters; i++) {
1492  ebml_master chapteratom, chapterdisplay;
1493  AVChapter *c = s->chapters[i];
1494  int64_t chapterstart = av_rescale_q(c->start, c->time_base, scale);
1495  int64_t chapterend = av_rescale_q(c->end, c->time_base, scale);
1496  AVDictionaryEntry *t = NULL;
1497  if (chapterstart < 0 || chapterstart > chapterend || chapterend < 0) {
1498  av_log(s, AV_LOG_ERROR,
1499  "Invalid chapter start (%"PRId64") or end (%"PRId64").\n",
1500  chapterstart, chapterend);
1501  return AVERROR_INVALIDDATA;
1502  }
1503 
1504  chapteratom = start_ebml_master(dyn_cp, MATROSKA_ID_CHAPTERATOM, 0);
1506  put_ebml_uint(dyn_cp, MATROSKA_ID_CHAPTERTIMESTART, chapterstart);
1507  put_ebml_uint(dyn_cp, MATROSKA_ID_CHAPTERTIMEEND, chapterend);
1508  if (mkv->mode != MODE_WEBM) {
1511  }
1512  if ((t = av_dict_get(c->metadata, "title", NULL, 0))) {
1513  chapterdisplay = start_ebml_master(dyn_cp, MATROSKA_ID_CHAPTERDISPLAY, 0);
1515  put_ebml_string(dyn_cp, MATROSKA_ID_CHAPLANG , "und");
1516  end_ebml_master(dyn_cp, chapterdisplay);
1517  }
1518  end_ebml_master(dyn_cp, chapteratom);
1519  }
1520  end_ebml_master(dyn_cp, editionentry);
1521  end_ebml_master_crc32(pb, &dyn_cp, mkv, chapters);
1522 
1523  mkv->wrote_chapters = 1;
1524  return 0;
1525 }
1526 
1528 {
1529  uint8_t *key = av_strdup(t->key);
1530  uint8_t *p = key;
1531  const uint8_t *lang = NULL;
1532  ebml_master tag;
1533 
1534  if (!key)
1535  return AVERROR(ENOMEM);
1536 
1537  if ((p = strrchr(p, '-')) &&
1538  (lang = ff_convert_lang_to(p + 1, AV_LANG_ISO639_2_BIBL)))
1539  *p = 0;
1540 
1541  p = key;
1542  while (*p) {
1543  if (*p == ' ')
1544  *p = '_';
1545  else if (*p >= 'a' && *p <= 'z')
1546  *p -= 'a' - 'A';
1547  p++;
1548  }
1549 
1552  if (lang)
1555  end_ebml_master(pb, tag);
1556 
1557  av_freep(&key);
1558  return 0;
1559 }
1560 
1562  unsigned int elementid, unsigned int uid,
1563  ebml_master *tags, ebml_master* tag)
1564 {
1565  AVIOContext *pb;
1566  MatroskaMuxContext *mkv = s->priv_data;
1567  ebml_master targets;
1568  int ret;
1569 
1570  if (!tags->pos) {
1572  if (ret < 0) return ret;
1573 
1574  start_ebml_master_crc32(s->pb, &mkv->tags_bc, mkv, tags, MATROSKA_ID_TAGS, 0);
1575  }
1576  pb = mkv->tags_bc;
1577 
1578  *tag = start_ebml_master(pb, MATROSKA_ID_TAG, 0);
1579  targets = start_ebml_master(pb, MATROSKA_ID_TAGTARGETS, 0);
1580  if (elementid)
1581  put_ebml_uint(pb, elementid, uid);
1582  end_ebml_master(pb, targets);
1583  return 0;
1584 }
1585 
1586 static int mkv_check_tag_name(const char *name, unsigned int elementid)
1587 {
1588  return av_strcasecmp(name, "title") &&
1589  av_strcasecmp(name, "stereo_mode") &&
1590  av_strcasecmp(name, "creation_time") &&
1591  av_strcasecmp(name, "encoding_tool") &&
1592  av_strcasecmp(name, "duration") &&
1593  (elementid != MATROSKA_ID_TAGTARGETS_TRACKUID ||
1594  av_strcasecmp(name, "language")) &&
1595  (elementid != MATROSKA_ID_TAGTARGETS_ATTACHUID ||
1596  (av_strcasecmp(name, "filename") &&
1597  av_strcasecmp(name, "mimetype")));
1598 }
1599 
1600 static int mkv_write_tag(AVFormatContext *s, AVDictionary *m, unsigned int elementid,
1601  unsigned int uid, ebml_master *tags)
1602 {
1603  MatroskaMuxContext *mkv = s->priv_data;
1604  ebml_master tag;
1605  int ret;
1606  AVDictionaryEntry *t = NULL;
1607 
1608  ret = mkv_write_tag_targets(s, elementid, uid, tags, &tag);
1609  if (ret < 0)
1610  return ret;
1611 
1612  while ((t = av_dict_get(m, "", t, AV_DICT_IGNORE_SUFFIX))) {
1613  if (mkv_check_tag_name(t->key, elementid)) {
1614  ret = mkv_write_simpletag(mkv->tags_bc, t);
1615  if (ret < 0)
1616  return ret;
1617  }
1618  }
1619 
1620  end_ebml_master(mkv->tags_bc, tag);
1621  return 0;
1622 }
1623 
1624 static int mkv_check_tag(AVDictionary *m, unsigned int elementid)
1625 {
1626  AVDictionaryEntry *t = NULL;
1627 
1628  while ((t = av_dict_get(m, "", t, AV_DICT_IGNORE_SUFFIX)))
1629  if (mkv_check_tag_name(t->key, elementid))
1630  return 1;
1631 
1632  return 0;
1633 }
1634 
1636 {
1637  MatroskaMuxContext *mkv = s->priv_data;
1638  int i, ret;
1639 
1641 
1642  if (mkv_check_tag(s->metadata, 0)) {
1643  ret = mkv_write_tag(s, s->metadata, 0, 0, &mkv->tags);
1644  if (ret < 0) return ret;
1645  }
1646 
1647  for (i = 0; i < s->nb_streams; i++) {
1648  AVStream *st = s->streams[i];
1649 
1651  continue;
1652 
1654  continue;
1655 
1656  ret = mkv_write_tag(s, st->metadata, MATROSKA_ID_TAGTARGETS_TRACKUID, i + 1, &mkv->tags);
1657  if (ret < 0) return ret;
1658  }
1659 
1660  if ((s->pb->seekable & AVIO_SEEKABLE_NORMAL) && !mkv->is_live) {
1661  for (i = 0; i < s->nb_streams; i++) {
1662  AVIOContext *pb;
1663  AVStream *st = s->streams[i];
1664  ebml_master tag_target;
1665  ebml_master tag;
1666 
1668  continue;
1669 
1670  mkv_write_tag_targets(s, MATROSKA_ID_TAGTARGETS_TRACKUID, i + 1, &mkv->tags, &tag_target);
1671  pb = mkv->tags_bc;
1672 
1674  put_ebml_string(pb, MATROSKA_ID_TAGNAME, "DURATION");
1675  mkv->stream_duration_offsets[i] = avio_tell(pb);
1676 
1677  // Reserve space to write duration as a 20-byte string.
1678  // 2 (ebml id) + 1 (data size) + 20 (data)
1679  put_ebml_void(pb, 23);
1680  end_ebml_master(pb, tag);
1681  end_ebml_master(pb, tag_target);
1682  }
1683  }
1684 
1685  if (mkv->mode != MODE_WEBM) {
1686  for (i = 0; i < s->nb_chapters; i++) {
1687  AVChapter *ch = s->chapters[i];
1688 
1690  continue;
1691 
1693  if (ret < 0)
1694  return ret;
1695  }
1696  }
1697 
1698  if (mkv->have_attachments && mkv->mode != MODE_WEBM) {
1699  for (i = 0; i < mkv->attachments->num_entries; i++) {
1700  mkv_attachment *attachment = &mkv->attachments->entries[i];
1701  AVStream *st = s->streams[attachment->stream_idx];
1702 
1704  continue;
1705 
1706  ret = mkv_write_tag(s, st->metadata, MATROSKA_ID_TAGTARGETS_ATTACHUID, attachment->fileuid, &mkv->tags);
1707  if (ret < 0)
1708  return ret;
1709  }
1710  }
1711 
1712  if (mkv->tags.pos) {
1713  if ((s->pb->seekable & AVIO_SEEKABLE_NORMAL) && !mkv->is_live)
1714  end_ebml_master_crc32_preliminary(s->pb, &mkv->tags_bc, mkv, mkv->tags);
1715  else
1716  end_ebml_master_crc32(s->pb, &mkv->tags_bc, mkv, mkv->tags);
1717  }
1718  return 0;
1719 }
1720 
1722 {
1723  MatroskaMuxContext *mkv = s->priv_data;
1724  AVIOContext *dyn_cp, *pb = s->pb;
1725  ebml_master attachments;
1726  AVLFG c;
1727  int i, ret;
1728 
1729  if (!mkv->have_attachments)
1730  return 0;
1731 
1732  mkv->attachments = av_mallocz(sizeof(*mkv->attachments));
1733  if (!mkv->attachments)
1734  return AVERROR(ENOMEM);
1735 
1737 
1739  if (ret < 0) return ret;
1740 
1741  ret = start_ebml_master_crc32(pb, &dyn_cp, mkv, &attachments, MATROSKA_ID_ATTACHMENTS, 0);
1742  if (ret < 0) return ret;
1743 
1744  for (i = 0; i < s->nb_streams; i++) {
1745  AVStream *st = s->streams[i];
1746  ebml_master attached_file;
1747  mkv_attachment *attachment = mkv->attachments->entries;
1748  AVDictionaryEntry *t;
1749  const char *mimetype = NULL;
1750  uint32_t fileuid;
1751 
1753  continue;
1754 
1755  attachment = av_realloc_array(attachment, mkv->attachments->num_entries + 1, sizeof(mkv_attachment));
1756  if (!attachment)
1757  return AVERROR(ENOMEM);
1758  mkv->attachments->entries = attachment;
1759 
1760  attached_file = start_ebml_master(dyn_cp, MATROSKA_ID_ATTACHEDFILE, 0);
1761 
1762  if (t = av_dict_get(st->metadata, "title", NULL, 0))
1764  if (!(t = av_dict_get(st->metadata, "filename", NULL, 0))) {
1765  av_log(s, AV_LOG_ERROR, "Attachment stream %d has no filename tag.\n", i);
1766  return AVERROR(EINVAL);
1767  }
1769  if (t = av_dict_get(st->metadata, "mimetype", NULL, 0))
1770  mimetype = t->value;
1771  else if (st->codecpar->codec_id != AV_CODEC_ID_NONE ) {
1772  int i;
1773  for (i = 0; ff_mkv_mime_tags[i].id != AV_CODEC_ID_NONE; i++)
1774  if (ff_mkv_mime_tags[i].id == st->codecpar->codec_id) {
1775  mimetype = ff_mkv_mime_tags[i].str;
1776  break;
1777  }
1778  for (i = 0; ff_mkv_image_mime_tags[i].id != AV_CODEC_ID_NONE; i++)
1779  if (ff_mkv_image_mime_tags[i].id == st->codecpar->codec_id) {
1780  mimetype = ff_mkv_image_mime_tags[i].str;
1781  break;
1782  }
1783  }
1784  if (!mimetype) {
1785  av_log(s, AV_LOG_ERROR, "Attachment stream %d has no mimetype tag and "
1786  "it cannot be deduced from the codec id.\n", i);
1787  return AVERROR(EINVAL);
1788  }
1789 
1790  if (s->flags & AVFMT_FLAG_BITEXACT) {
1791  struct AVSHA *sha = av_sha_alloc();
1792  uint8_t digest[20];
1793  if (!sha)
1794  return AVERROR(ENOMEM);
1795  av_sha_init(sha, 160);
1797  av_sha_final(sha, digest);
1798  av_free(sha);
1799  fileuid = AV_RL32(digest);
1800  } else {
1801  fileuid = av_lfg_get(&c);
1802  }
1803  av_log(s, AV_LOG_VERBOSE, "Using %.8"PRIx32" for attachment %d\n",
1804  fileuid, mkv->attachments->num_entries);
1805 
1806  put_ebml_string(dyn_cp, MATROSKA_ID_FILEMIMETYPE, mimetype);
1808  put_ebml_uint(dyn_cp, MATROSKA_ID_FILEUID, fileuid);
1809  end_ebml_master(dyn_cp, attached_file);
1810 
1812  mkv->attachments->entries[mkv->attachments->num_entries++].fileuid = fileuid;
1813  }
1814  end_ebml_master_crc32(pb, &dyn_cp, mkv, attachments);
1815 
1816  return 0;
1817 }
1818 
1820 {
1821  int i = 0;
1822  int64_t max = 0;
1823  int64_t us;
1824 
1825  AVDictionaryEntry *explicitDuration = av_dict_get(s->metadata, "DURATION", NULL, 0);
1826  if (explicitDuration && (av_parse_time(&us, explicitDuration->value, 1) == 0) && us > 0) {
1827  av_log(s, AV_LOG_DEBUG, "get_metadata_duration found duration in context metadata: %" PRId64 "\n", us);
1828  return us;
1829  }
1830 
1831  for (i = 0; i < s->nb_streams; i++) {
1832  int64_t us;
1833  AVDictionaryEntry *duration = av_dict_get(s->streams[i]->metadata, "DURATION", NULL, 0);
1834 
1835  if (duration && (av_parse_time(&us, duration->value, 1) == 0))
1836  max = FFMAX(max, us);
1837  }
1838 
1839  av_log(s, AV_LOG_DEBUG, "get_metadata_duration returned: %" PRId64 "\n", max);
1840  return max;
1841 }
1842 
1844 {
1845  MatroskaMuxContext *mkv = s->priv_data;
1846  AVIOContext *pb = s->pb;
1849  int ret, i, version = 2;
1850  int64_t creation_time;
1851 
1852  if (!strcmp(s->oformat->name, "webm"))
1853  mkv->mode = MODE_WEBM;
1854  else
1855  mkv->mode = MODE_MATROSKAv2;
1856 
1857  if (mkv->mode != MODE_WEBM ||
1858  av_dict_get(s->metadata, "stereo_mode", NULL, 0) ||
1859  av_dict_get(s->metadata, "alpha_mode", NULL, 0))
1860  version = 4;
1861 
1862  for (i = 0; i < s->nb_streams; i++) {
1863  if (s->streams[i]->codecpar->codec_id == AV_CODEC_ID_OPUS ||
1864  av_dict_get(s->streams[i]->metadata, "stereo_mode", NULL, 0) ||
1865  av_dict_get(s->streams[i]->metadata, "alpha_mode", NULL, 0))
1866  version = 4;
1867  }
1868 
1869  mkv->tracks = av_mallocz_array(s->nb_streams, sizeof(*mkv->tracks));
1870  if (!mkv->tracks) {
1871  ret = AVERROR(ENOMEM);
1872  goto fail;
1873  }
1874  ebml_header = start_ebml_master(pb, EBML_ID_HEADER, 0);
1880  put_ebml_uint (pb, EBML_ID_DOCTYPEVERSION , version);
1882  end_ebml_master(pb, ebml_header);
1883 
1885  mkv->segment_offset = avio_tell(pb);
1886 
1887  // we write 2 seek heads - one at the end of the file to point to each
1888  // cluster, and one at the beginning to point to all other level one
1889  // elements (including the seek head at the end of the file), which
1890  // isn't more than 10 elements if we only write one of each other
1891  // currently defined level 1 element
1892  mkv->main_seekhead = mkv_start_seekhead(pb, mkv->segment_offset, 10);
1893  if (!mkv->main_seekhead) {
1894  ret = AVERROR(ENOMEM);
1895  goto fail;
1896  }
1897 
1899  if (ret < 0) goto fail;
1900 
1901  ret = start_ebml_master_crc32(pb, &mkv->info_bc, mkv, &mkv->info, MATROSKA_ID_INFO, 0);
1902  if (ret < 0)
1903  return ret;
1904  pb = mkv->info_bc;
1905 
1907  if ((tag = av_dict_get(s->metadata, "title", NULL, 0)))
1909  if (!(s->flags & AVFMT_FLAG_BITEXACT)) {
1911  if ((tag = av_dict_get(s->metadata, "encoding_tool", NULL, 0)))
1913  else
1915 
1916  if (mkv->mode != MODE_WEBM) {
1917  uint32_t segment_uid[4];
1918  AVLFG lfg;
1919 
1921 
1922  for (i = 0; i < 4; i++)
1923  segment_uid[i] = av_lfg_get(&lfg);
1924 
1925  put_ebml_binary(pb, MATROSKA_ID_SEGMENTUID, segment_uid, 16);
1926  }
1927  } else {
1928  const char *ident = "Lavf";
1931  }
1932 
1933  if (ff_parse_creation_time_metadata(s, &creation_time, 0) > 0) {
1934  // Adjust time so it's relative to 2001-01-01 and convert to nanoseconds.
1935  int64_t date_utc = (creation_time - 978307200000000LL) * 1000;
1936  uint8_t date_utc_buf[8];
1937  AV_WB64(date_utc_buf, date_utc);
1938  put_ebml_binary(pb, MATROSKA_ID_DATEUTC, date_utc_buf, 8);
1939  }
1940 
1941  // reserve space for the duration
1942  mkv->duration = 0;
1943  mkv->duration_offset = avio_tell(pb);
1944  if (!mkv->is_live) {
1945  int64_t metadata_duration = get_metadata_duration(s);
1946 
1947  if (s->duration > 0) {
1948  int64_t scaledDuration = av_rescale(s->duration, 1000, AV_TIME_BASE);
1949  put_ebml_float(pb, MATROSKA_ID_DURATION, scaledDuration);
1950  av_log(s, AV_LOG_DEBUG, "Write early duration from recording time = %" PRIu64 "\n", scaledDuration);
1951  } else if (metadata_duration > 0) {
1952  int64_t scaledDuration = av_rescale(metadata_duration, 1000, AV_TIME_BASE);
1953  put_ebml_float(pb, MATROSKA_ID_DURATION, scaledDuration);
1954  av_log(s, AV_LOG_DEBUG, "Write early duration from metadata = %" PRIu64 "\n", scaledDuration);
1955  } else {
1956  put_ebml_void(pb, 11); // assumes double-precision float to be written
1957  }
1958  }
1959  if ((s->pb->seekable & AVIO_SEEKABLE_NORMAL) && !mkv->is_live)
1960  end_ebml_master_crc32_preliminary(s->pb, &mkv->info_bc, mkv, mkv->info);
1961  else
1962  end_ebml_master_crc32(s->pb, &mkv->info_bc, mkv, mkv->info);
1963  pb = s->pb;
1964 
1965  // initialize stream_duration fields
1966  mkv->stream_durations = av_mallocz(s->nb_streams * sizeof(int64_t));
1967  mkv->stream_duration_offsets = av_mallocz(s->nb_streams * sizeof(int64_t));
1968  if (!mkv->stream_durations || !mkv->stream_duration_offsets) {
1969  ret = AVERROR(ENOMEM);
1970  goto fail;
1971  }
1972 
1973  ret = mkv_write_tracks(s);
1974  if (ret < 0)
1975  goto fail;
1976 
1977  for (i = 0; i < s->nb_chapters; i++)
1978  mkv->chapter_id_offset = FFMAX(mkv->chapter_id_offset, 1LL - s->chapters[i]->id);
1979 
1980  ret = mkv_write_chapters(s);
1981  if (ret < 0)
1982  goto fail;
1983 
1984  if (mkv->mode != MODE_WEBM) {
1985  ret = mkv_write_attachments(s);
1986  if (ret < 0)
1987  goto fail;
1988  }
1989 
1990  ret = mkv_write_tags(s);
1991  if (ret < 0)
1992  goto fail;
1993 
1994  if (!(s->pb->seekable & AVIO_SEEKABLE_NORMAL) && !mkv->is_live)
1995  mkv_write_seekhead(pb, mkv);
1996 
1997  mkv->cues = mkv_start_cues(mkv->segment_offset);
1998  if (!mkv->cues) {
1999  ret = AVERROR(ENOMEM);
2000  goto fail;
2001  }
2002  if ((pb->seekable & AVIO_SEEKABLE_NORMAL) && mkv->reserve_cues_space) {
2003  mkv->cues_pos = avio_tell(pb);
2004  if (mkv->reserve_cues_space == 1)
2005  mkv->reserve_cues_space++;
2007  }
2008 
2010  mkv->cur_audio_pkt.size = 0;
2011  mkv->cluster_pos = -1;
2012 
2013  avio_flush(pb);
2014 
2015  // start a new cluster every 5 MB or 5 sec, or 32k / 1 sec for streaming or
2016  // after 4k and on a keyframe
2017  if (pb->seekable & AVIO_SEEKABLE_NORMAL) {
2018  if (mkv->cluster_time_limit < 0)
2019  mkv->cluster_time_limit = 5000;
2020  if (mkv->cluster_size_limit < 0)
2021  mkv->cluster_size_limit = 5 * 1024 * 1024;
2022  } else {
2023  if (mkv->cluster_time_limit < 0)
2024  mkv->cluster_time_limit = 1000;
2025  if (mkv->cluster_size_limit < 0)
2026  mkv->cluster_size_limit = 32 * 1024;
2027  }
2028 
2029  return 0;
2030 fail:
2031  mkv_free(mkv);
2032  return ret;
2033 }
2034 
2035 static int mkv_blockgroup_size(int pkt_size)
2036 {
2037  int size = pkt_size + 4;
2038  size += ebml_num_size(size);
2039  size += 2; // EBML ID for block and block duration
2040  size += 8; // max size of block duration
2041  size += ebml_num_size(size);
2042  size += 1; // blockgroup EBML ID
2043  return size;
2044 }
2045 
2046 static int mkv_strip_wavpack(const uint8_t *src, uint8_t **pdst, int *size)
2047 {
2048  uint8_t *dst;
2049  int srclen = *size;
2050  int offset = 0;
2051  int ret;
2052 
2053  dst = av_malloc(srclen);
2054  if (!dst)
2055  return AVERROR(ENOMEM);
2056 
2057  while (srclen >= WV_HEADER_SIZE) {
2058  WvHeader header;
2059 
2060  ret = ff_wv_parse_header(&header, src);
2061  if (ret < 0)
2062  goto fail;
2063  src += WV_HEADER_SIZE;
2064  srclen -= WV_HEADER_SIZE;
2065 
2066  if (srclen < header.blocksize) {
2067  ret = AVERROR_INVALIDDATA;
2068  goto fail;
2069  }
2070 
2071  if (header.initial) {
2072  AV_WL32(dst + offset, header.samples);
2073  offset += 4;
2074  }
2075  AV_WL32(dst + offset, header.flags);
2076  AV_WL32(dst + offset + 4, header.crc);
2077  offset += 8;
2078 
2079  if (!(header.initial && header.final)) {
2080  AV_WL32(dst + offset, header.blocksize);
2081  offset += 4;
2082  }
2083 
2084  memcpy(dst + offset, src, header.blocksize);
2085  src += header.blocksize;
2086  srclen -= header.blocksize;
2087  offset += header.blocksize;
2088  }
2089 
2090  *pdst = dst;
2091  *size = offset;
2092 
2093  return 0;
2094 fail:
2095  av_freep(&dst);
2096  return ret;
2097 }
2098 
2100  unsigned int blockid, AVPacket *pkt, int keyframe)
2101 {
2102  MatroskaMuxContext *mkv = s->priv_data;
2104  uint8_t *data = NULL, *side_data = NULL;
2105  int offset = 0, size = pkt->size, side_data_size = 0;
2106  int64_t ts = mkv->tracks[pkt->stream_index].write_dts ? pkt->dts : pkt->pts;
2107  uint64_t additional_id = 0;
2108  int64_t discard_padding = 0;
2109  uint8_t track_number = (mkv->is_dash ? mkv->dash_track_number : (pkt->stream_index + 1));
2110  ebml_master block_group, block_additions, block_more;
2111 
2112  ts += mkv->tracks[pkt->stream_index].ts_offset;
2113 
2114  av_log(s, AV_LOG_DEBUG, "Writing block at offset %" PRIu64 ", size %d, "
2115  "pts %" PRId64 ", dts %" PRId64 ", duration %" PRId64 ", keyframe %d\n",
2116  avio_tell(pb), pkt->size, pkt->pts, pkt->dts, pkt->duration,
2117  keyframe != 0);
2118  if (par->codec_id == AV_CODEC_ID_H264 && par->extradata_size > 0 &&
2119  (AV_RB24(par->extradata) == 1 || AV_RB32(par->extradata) == 1))
2120  ff_avc_parse_nal_units_buf(pkt->data, &data, &size);
2121  else if (par->codec_id == AV_CODEC_ID_HEVC && par->extradata_size > 6 &&
2122  (AV_RB24(par->extradata) == 1 || AV_RB32(par->extradata) == 1))
2123  /* extradata is Annex B, assume the bitstream is too and convert it */
2124  ff_hevc_annexb2mp4_buf(pkt->data, &data, &size, 0, NULL);
2125  else if (par->codec_id == AV_CODEC_ID_WAVPACK) {
2126  int ret = mkv_strip_wavpack(pkt->data, &data, &size);
2127  if (ret < 0) {
2128  av_log(s, AV_LOG_ERROR, "Error stripping a WavPack packet.\n");
2129  return;
2130  }
2131  } else
2132  data = pkt->data;
2133 
2134  if (par->codec_id == AV_CODEC_ID_PRORES && size >= 8) {
2135  /* Matroska specification requires to remove the first QuickTime atom
2136  */
2137  size -= 8;
2138  offset = 8;
2139  }
2140 
2141  side_data = av_packet_get_side_data(pkt,
2143  &side_data_size);
2144 
2145  if (side_data && side_data_size >= 10) {
2146  discard_padding = av_rescale_q(AV_RL32(side_data + 4),
2147  (AVRational){1, par->sample_rate},
2148  (AVRational){1, 1000000000});
2149  }
2150 
2151  side_data = av_packet_get_side_data(pkt,
2153  &side_data_size);
2154  if (side_data) {
2155  additional_id = AV_RB64(side_data);
2156  side_data += 8;
2157  side_data_size -= 8;
2158  }
2159 
2160  if ((side_data_size && additional_id == 1) || discard_padding) {
2161  block_group = start_ebml_master(pb, MATROSKA_ID_BLOCKGROUP, 0);
2162  blockid = MATROSKA_ID_BLOCK;
2163  }
2164 
2165  put_ebml_id(pb, blockid);
2166  put_ebml_num(pb, size + 4, 0);
2167  // this assumes stream_index is less than 126
2168  avio_w8(pb, 0x80 | track_number);
2169  avio_wb16(pb, ts - mkv->cluster_pts);
2170  avio_w8(pb, (blockid == MATROSKA_ID_SIMPLEBLOCK && keyframe) ? (1 << 7) : 0);
2171  avio_write(pb, data + offset, size);
2172  if (data != pkt->data)
2173  av_free(data);
2174 
2175  if (blockid == MATROSKA_ID_BLOCK && !keyframe) {
2177  mkv->last_track_timestamp[track_number - 1]);
2178  }
2179  mkv->last_track_timestamp[track_number - 1] = ts - mkv->cluster_pts;
2180 
2181  if (discard_padding) {
2182  put_ebml_sint(pb, MATROSKA_ID_DISCARDPADDING, discard_padding);
2183  }
2184 
2185  if (side_data_size && additional_id == 1) {
2186  block_additions = start_ebml_master(pb, MATROSKA_ID_BLOCKADDITIONS, 0);
2187  block_more = start_ebml_master(pb, MATROSKA_ID_BLOCKMORE, 0);
2190  put_ebml_num(pb, side_data_size, 0);
2191  avio_write(pb, side_data, side_data_size);
2192  end_ebml_master(pb, block_more);
2193  end_ebml_master(pb, block_additions);
2194  }
2195  if ((side_data_size && additional_id == 1) || discard_padding) {
2196  end_ebml_master(pb, block_group);
2197  }
2198 }
2199 
2201 {
2202  MatroskaMuxContext *mkv = s->priv_data;
2203  ebml_master blockgroup;
2204  int id_size, settings_size, size;
2205  uint8_t *id, *settings;
2206  int64_t ts = mkv->tracks[pkt->stream_index].write_dts ? pkt->dts : pkt->pts;
2207  const int flags = 0;
2208 
2209  id_size = 0;
2211  &id_size);
2212 
2213  settings_size = 0;
2215  &settings_size);
2216 
2217  size = id_size + 1 + settings_size + 1 + pkt->size;
2218 
2219  av_log(s, AV_LOG_DEBUG, "Writing block at offset %" PRIu64 ", size %d, "
2220  "pts %" PRId64 ", dts %" PRId64 ", duration %" PRId64 ", flags %d\n",
2221  avio_tell(pb), size, pkt->pts, pkt->dts, pkt->duration, flags);
2222 
2224 
2226  put_ebml_num(pb, size + 4, 0);
2227  avio_w8(pb, 0x80 | (pkt->stream_index + 1)); // this assumes stream_index is less than 126
2228  avio_wb16(pb, ts - mkv->cluster_pts);
2229  avio_w8(pb, flags);
2230  avio_printf(pb, "%.*s\n%.*s\n%.*s", id_size, id, settings_size, settings, pkt->size, pkt->data);
2231 
2233  end_ebml_master(pb, blockgroup);
2234 
2235  return pkt->duration;
2236 }
2237 
2239 {
2240  MatroskaMuxContext *mkv = s->priv_data;
2241 
2242  end_ebml_master_crc32(s->pb, &mkv->dyn_bc, mkv, mkv->cluster);
2243  mkv->cluster_pos = -1;
2244  if (s->pb->seekable & AVIO_SEEKABLE_NORMAL)
2245  av_log(s, AV_LOG_DEBUG,
2246  "Starting new cluster at offset %" PRIu64 " bytes, "
2247  "pts %" PRIu64 "dts %" PRIu64 "\n",
2248  avio_tell(s->pb), pkt->pts, pkt->dts);
2249  else
2250  av_log(s, AV_LOG_DEBUG, "Starting new cluster, "
2251  "pts %" PRIu64 "dts %" PRIu64 "\n",
2252  pkt->pts, pkt->dts);
2253  avio_flush(s->pb);
2254 }
2255 
2257 {
2258  MatroskaMuxContext *mkv = s->priv_data;
2259  mkv_track *track = &mkv->tracks[pkt->stream_index];
2261  uint8_t *side_data;
2262  int side_data_size = 0, ret;
2263 
2265  &side_data_size);
2266 
2267  switch (par->codec_id) {
2268  case AV_CODEC_ID_AAC:
2269  if (side_data_size && (s->pb->seekable & AVIO_SEEKABLE_NORMAL) && !mkv->is_live) {
2270  int filler, output_sample_rate = 0;
2271  int64_t curpos;
2272  ret = get_aac_sample_rates(s, side_data, side_data_size, &track->sample_rate,
2273  &output_sample_rate);
2274  if (ret < 0)
2275  return ret;
2276  if (!output_sample_rate)
2277  output_sample_rate = track->sample_rate; // Space is already reserved, so it's this or a void element.
2278  av_freep(&par->extradata);
2279  ret = ff_alloc_extradata(par, side_data_size);
2280  if (ret < 0)
2281  return ret;
2282  memcpy(par->extradata, side_data, side_data_size);
2283  curpos = avio_tell(mkv->tracks_bc);
2284  avio_seek(mkv->tracks_bc, track->codecpriv_offset, SEEK_SET);
2285  mkv_write_codecprivate(s, mkv->tracks_bc, par, 1, 0);
2286  filler = MAX_PCE_SIZE + 2 + 4 - (avio_tell(mkv->tracks_bc) - track->codecpriv_offset);
2287  if (filler)
2288  put_ebml_void(mkv->tracks_bc, filler);
2289  avio_seek(mkv->tracks_bc, track->sample_rate_offset, SEEK_SET);
2291  put_ebml_float(mkv->tracks_bc, MATROSKA_ID_AUDIOOUTSAMPLINGFREQ, output_sample_rate);
2292  avio_seek(mkv->tracks_bc, curpos, SEEK_SET);
2293  } else if (!par->extradata_size && !track->sample_rate) {
2294  // No extradata (codecpar or packet side data).
2295  av_log(s, AV_LOG_ERROR, "Error parsing AAC extradata, unable to determine samplerate.\n");
2296  return AVERROR(EINVAL);
2297  }
2298  break;
2299  case AV_CODEC_ID_FLAC:
2300  if (side_data_size && (s->pb->seekable & AVIO_SEEKABLE_NORMAL) && !mkv->is_live) {
2301  AVCodecParameters *codecpriv_par;
2302  int64_t curpos;
2303  if (side_data_size != par->extradata_size) {
2304  av_log(s, AV_LOG_ERROR, "Invalid FLAC STREAMINFO metadata for output stream %d\n",
2305  pkt->stream_index);
2306  return AVERROR(EINVAL);
2307  }
2308  codecpriv_par = avcodec_parameters_alloc();
2309  if (!codecpriv_par)
2310  return AVERROR(ENOMEM);
2311  ret = avcodec_parameters_copy(codecpriv_par, par);
2312  if (ret < 0) {
2313  avcodec_parameters_free(&codecpriv_par);
2314  return ret;
2315  }
2316  memcpy(codecpriv_par->extradata, side_data, side_data_size);
2317  curpos = avio_tell(mkv->tracks_bc);
2318  avio_seek(mkv->tracks_bc, track->codecpriv_offset, SEEK_SET);
2319  mkv_write_codecprivate(s, mkv->tracks_bc, codecpriv_par, 1, 0);
2320  avio_seek(mkv->tracks_bc, curpos, SEEK_SET);
2321  avcodec_parameters_free(&codecpriv_par);
2322  }
2323  break;
2324  default:
2325  if (side_data_size)
2326  av_log(s, AV_LOG_DEBUG, "Ignoring new extradata in a packet for stream %d.\n", pkt->stream_index);
2327  break;
2328  }
2329 
2330  return 0;
2331 }
2332 
2334 {
2335  MatroskaMuxContext *mkv = s->priv_data;
2336  AVIOContext *pb = s->pb;
2338  int keyframe = !!(pkt->flags & AV_PKT_FLAG_KEY);
2339  int duration = pkt->duration;
2340  int ret;
2341  int64_t ts = mkv->tracks[pkt->stream_index].write_dts ? pkt->dts : pkt->pts;
2342  int64_t relative_packet_pos;
2343  int dash_tracknum = mkv->is_dash ? mkv->dash_track_number : pkt->stream_index + 1;
2344 
2345  if (ts == AV_NOPTS_VALUE) {
2346  av_log(s, AV_LOG_ERROR, "Can't write packet with unknown timestamp\n");
2347  return AVERROR(EINVAL);
2348  }
2349  ts += mkv->tracks[pkt->stream_index].ts_offset;
2350 
2351  if (mkv->cluster_pos != -1) {
2352  int64_t cluster_time = ts - mkv->cluster_pts + mkv->tracks[pkt->stream_index].ts_offset;
2353  if ((int16_t)cluster_time != cluster_time) {
2354  av_log(s, AV_LOG_WARNING, "Starting new cluster due to timestamp\n");
2355  mkv_start_new_cluster(s, pkt);
2356  }
2357  }
2358 
2359  if (mkv->cluster_pos == -1) {
2360  mkv->cluster_pos = avio_tell(s->pb);
2361  ret = start_ebml_master_crc32(s->pb, &mkv->dyn_bc, mkv, &mkv->cluster, MATROSKA_ID_CLUSTER, 0);
2362  if (ret < 0)
2363  return ret;
2365  mkv->cluster_pts = FFMAX(0, ts);
2366  }
2367  pb = mkv->dyn_bc;
2368 
2369  relative_packet_pos = avio_tell(pb);
2370 
2371  if (par->codec_type != AVMEDIA_TYPE_SUBTITLE) {
2372  mkv_write_block(s, pb, MATROSKA_ID_SIMPLEBLOCK, pkt, keyframe);
2373  if ((s->pb->seekable & AVIO_SEEKABLE_NORMAL) && (par->codec_type == AVMEDIA_TYPE_VIDEO && keyframe || add_cue)) {
2374  ret = mkv_add_cuepoint(mkv->cues, pkt->stream_index, dash_tracknum, ts, mkv->cluster_pos, relative_packet_pos, -1);
2375  if (ret < 0) return ret;
2376  }
2377  } else {
2378  if (par->codec_id == AV_CODEC_ID_WEBVTT) {
2379  duration = mkv_write_vtt_blocks(s, pb, pkt);
2380  } else {
2382  mkv_blockgroup_size(pkt->size));
2383 
2384 #if FF_API_CONVERGENCE_DURATION
2386  /* For backward compatibility, prefer convergence_duration. */
2387  if (pkt->convergence_duration > 0) {
2388  duration = pkt->convergence_duration;
2389  }
2391 #endif
2392  /* All subtitle blocks are considered to be keyframes. */
2393  mkv_write_block(s, pb, MATROSKA_ID_BLOCK, pkt, 1);
2395  end_ebml_master(pb, blockgroup);
2396  }
2397 
2398  if (s->pb->seekable & AVIO_SEEKABLE_NORMAL) {
2399  ret = mkv_add_cuepoint(mkv->cues, pkt->stream_index, dash_tracknum, ts,
2400  mkv->cluster_pos, relative_packet_pos, duration);
2401  if (ret < 0)
2402  return ret;
2403  }
2404  }
2405 
2406  mkv->duration = FFMAX(mkv->duration, ts + duration);
2407 
2408  if (mkv->stream_durations)
2409  mkv->stream_durations[pkt->stream_index] =
2410  FFMAX(mkv->stream_durations[pkt->stream_index], ts + duration);
2411 
2412  return 0;
2413 }
2414 
2416 {
2417  MatroskaMuxContext *mkv = s->priv_data;
2419  int keyframe = !!(pkt->flags & AV_PKT_FLAG_KEY);
2420  int cluster_size;
2421  int64_t cluster_time;
2422  int ret;
2423  int start_new_cluster;
2424 
2425  ret = mkv_check_new_extra_data(s, pkt);
2426  if (ret < 0)
2427  return ret;
2428 
2429  if (mkv->tracks[pkt->stream_index].write_dts)
2430  cluster_time = pkt->dts - mkv->cluster_pts;
2431  else
2432  cluster_time = pkt->pts - mkv->cluster_pts;
2433  cluster_time += mkv->tracks[pkt->stream_index].ts_offset;
2434 
2435  // start a new cluster every 5 MB or 5 sec, or 32k / 1 sec for streaming or
2436  // after 4k and on a keyframe
2437  cluster_size = avio_tell(mkv->dyn_bc);
2438 
2439  if (mkv->is_dash && codec_type == AVMEDIA_TYPE_VIDEO) {
2440  // WebM DASH specification states that the first block of every cluster
2441  // has to be a key frame. So for DASH video, we only create a cluster
2442  // on seeing key frames.
2443  start_new_cluster = keyframe;
2444  } else if (mkv->is_dash && codec_type == AVMEDIA_TYPE_AUDIO &&
2445  (mkv->cluster_pos == -1 ||
2446  cluster_time > mkv->cluster_time_limit)) {
2447  // For DASH audio, we create a Cluster based on cluster_time_limit
2448  start_new_cluster = 1;
2449  } else if (!mkv->is_dash &&
2450  (cluster_size > mkv->cluster_size_limit ||
2451  cluster_time > mkv->cluster_time_limit ||
2452  (codec_type == AVMEDIA_TYPE_VIDEO && keyframe &&
2453  cluster_size > 4 * 1024))) {
2454  start_new_cluster = 1;
2455  } else {
2456  start_new_cluster = 0;
2457  }
2458 
2459  if (mkv->cluster_pos != -1 && start_new_cluster) {
2460  mkv_start_new_cluster(s, pkt);
2461  }
2462 
2463  if (!mkv->cluster_pos)
2464  avio_write_marker(s->pb,
2467 
2468  // check if we have an audio packet cached
2469  if (mkv->cur_audio_pkt.size > 0) {
2470  // for DASH audio, a CuePoint has to be added when there is a new cluster.
2472  mkv->is_dash ? start_new_cluster : 0);
2474  if (ret < 0) {
2475  av_log(s, AV_LOG_ERROR,
2476  "Could not write cached audio packet ret:%d\n", ret);
2477  return ret;
2478  }
2479  }
2480 
2481  // buffer an audio packet to ensure the packet containing the video
2482  // keyframe's timecode is contained in the same cluster for WebM
2483  if (codec_type == AVMEDIA_TYPE_AUDIO) {
2484  ret = av_packet_ref(&mkv->cur_audio_pkt, pkt);
2485  } else
2486  ret = mkv_write_packet_internal(s, pkt, 0);
2487  return ret;
2488 }
2489 
2491 {
2492  MatroskaMuxContext *mkv = s->priv_data;
2493 
2494  if (!pkt) {
2495  if (mkv->cluster_pos != -1) {
2496  end_ebml_master_crc32(s->pb, &mkv->dyn_bc, mkv, mkv->cluster);
2497  mkv->cluster_pos = -1;
2498  if (s->pb->seekable & AVIO_SEEKABLE_NORMAL)
2499  av_log(s, AV_LOG_DEBUG,
2500  "Flushing cluster at offset %" PRIu64 " bytes\n",
2501  avio_tell(s->pb));
2502  else
2503  av_log(s, AV_LOG_DEBUG, "Flushing cluster\n");
2504  avio_flush(s->pb);
2505  }
2506  return 1;
2507  }
2508  return mkv_write_packet(s, pkt);
2509 }
2510 
2512 {
2513  MatroskaMuxContext *mkv = s->priv_data;
2514  AVIOContext *pb = s->pb;
2515  int64_t currentpos, cuespos;
2516  int ret;
2517 
2518  // check if we have an audio packet cached
2519  if (mkv->cur_audio_pkt.size > 0) {
2520  ret = mkv_write_packet_internal(s, &mkv->cur_audio_pkt, 0);
2522  if (ret < 0) {
2523  av_log(s, AV_LOG_ERROR,
2524  "Could not write cached audio packet ret:%d\n", ret);
2525  return ret;
2526  }
2527  }
2528 
2529  if (mkv->dyn_bc) {
2530  end_ebml_master_crc32(pb, &mkv->dyn_bc, mkv, mkv->cluster);
2531  }
2532 
2533  ret = mkv_write_chapters(s);
2534  if (ret < 0)
2535  return ret;
2536 
2537 
2538  if ((pb->seekable & AVIO_SEEKABLE_NORMAL) && !mkv->is_live) {
2539  if (mkv->cues->num_entries) {
2540  if (mkv->reserve_cues_space) {
2541  int64_t cues_end;
2542 
2543  currentpos = avio_tell(pb);
2544  avio_seek(pb, mkv->cues_pos, SEEK_SET);
2545 
2546  cuespos = mkv_write_cues(s, mkv->cues, mkv->tracks, s->nb_streams);
2547  cues_end = avio_tell(pb);
2548  if (cues_end > cuespos + mkv->reserve_cues_space) {
2549  av_log(s, AV_LOG_ERROR,
2550  "Insufficient space reserved for cues: %d "
2551  "(needed: %" PRId64 ").\n",
2552  mkv->reserve_cues_space, cues_end - cuespos);
2553  return AVERROR(EINVAL);
2554  }
2555 
2556  if (cues_end < cuespos + mkv->reserve_cues_space)
2558  (cues_end - cuespos));
2559 
2560  avio_seek(pb, currentpos, SEEK_SET);
2561  } else {
2562  cuespos = mkv_write_cues(s, mkv->cues, mkv->tracks, s->nb_streams);
2563  }
2564 
2566  cuespos);
2567  if (ret < 0)
2568  return ret;
2569  }
2570 
2571  mkv_write_seekhead(pb, mkv);
2572 
2573  // update the duration
2574  av_log(s, AV_LOG_DEBUG, "end duration = %" PRIu64 "\n", mkv->duration);
2575  currentpos = avio_tell(pb);
2576  avio_seek(mkv->info_bc, mkv->duration_offset, SEEK_SET);
2578  avio_seek(pb, mkv->info.pos, SEEK_SET);
2579  end_ebml_master_crc32(pb, &mkv->info_bc, mkv, mkv->info);
2580 
2581  // write tracks master
2582  avio_seek(pb, mkv->tracks_master.pos, SEEK_SET);
2583  end_ebml_master_crc32(pb, &mkv->tracks_bc, mkv, mkv->tracks_master);
2584 
2585  // update stream durations
2586  if (!mkv->is_live && mkv->stream_durations) {
2587  int i;
2588  int64_t curr = avio_tell(mkv->tags_bc);
2589  for (i = 0; i < s->nb_streams; ++i) {
2590  AVStream *st = s->streams[i];
2591 
2592  if (mkv->stream_duration_offsets[i] > 0) {
2593  double duration_sec = mkv->stream_durations[i] * av_q2d(st->time_base);
2594  char duration_string[20] = "";
2595 
2596  av_log(s, AV_LOG_DEBUG, "stream %d end duration = %" PRIu64 "\n", i,
2597  mkv->stream_durations[i]);
2598 
2599  avio_seek(mkv->tags_bc, mkv->stream_duration_offsets[i], SEEK_SET);
2600 
2601  snprintf(duration_string, 20, "%02d:%02d:%012.9f",
2602  (int) duration_sec / 3600, ((int) duration_sec / 60) % 60,
2603  fmod(duration_sec, 60));
2604 
2605  put_ebml_binary(mkv->tags_bc, MATROSKA_ID_TAGSTRING, duration_string, 20);
2606  }
2607  }
2608  avio_seek(mkv->tags_bc, curr, SEEK_SET);
2609  }
2610  if (mkv->tags.pos && !mkv->is_live) {
2611  avio_seek(pb, mkv->tags.pos, SEEK_SET);
2612  end_ebml_master_crc32(pb, &mkv->tags_bc, mkv, mkv->tags);
2613  }
2614 
2615  avio_seek(pb, currentpos, SEEK_SET);
2616  }
2617 
2618  if (!mkv->is_live) {
2619  end_ebml_master(pb, mkv->segment);
2620  }
2621 
2622  mkv_free(mkv);
2623  return 0;
2624 }
2625 
2626 static int mkv_query_codec(enum AVCodecID codec_id, int std_compliance)
2627 {
2628  int i;
2629  for (i = 0; ff_mkv_codec_tags[i].id != AV_CODEC_ID_NONE; i++)
2630  if (ff_mkv_codec_tags[i].id == codec_id)
2631  return 1;
2632 
2633  if (std_compliance < FF_COMPLIANCE_NORMAL) {
2634  enum AVMediaType type = avcodec_get_type(codec_id);
2635  // mkv theoretically supports any video/audio through VFW/ACM
2636  if (type == AVMEDIA_TYPE_VIDEO || type == AVMEDIA_TYPE_AUDIO)
2637  return 1;
2638  }
2639 
2640  return 0;
2641 }
2642 
2643 static int mkv_init(struct AVFormatContext *s)
2644 {
2645  int i;
2646 
2647  if (s->nb_streams > MAX_TRACKS) {
2648  av_log(s, AV_LOG_ERROR,
2649  "At most %d streams are supported for muxing in Matroska\n",
2650  MAX_TRACKS);
2651  return AVERROR(EINVAL);
2652  }
2653 
2654  for (i = 0; i < s->nb_streams; i++) {
2655  if (s->streams[i]->codecpar->codec_id == AV_CODEC_ID_ATRAC3 ||
2661  av_log(s, AV_LOG_ERROR,
2662  "The Matroska muxer does not yet support muxing %s\n",
2664  return AVERROR_PATCHWELCOME;
2665  }
2666  }
2667 
2668  if (s->avoid_negative_ts < 0) {
2669  s->avoid_negative_ts = 1;
2671  }
2672 
2673  for (i = 0; i < s->nb_streams; i++) {
2674  // ms precision is the de-facto standard timescale for mkv files
2675  avpriv_set_pts_info(s->streams[i], 64, 1, 1000);
2676  }
2677 
2678  return 0;
2679 }
2680 
2681 static int mkv_check_bitstream(struct AVFormatContext *s, const AVPacket *pkt)
2682 {
2683  int ret = 1;
2684  AVStream *st = s->streams[pkt->stream_index];
2685 
2686  if (st->codecpar->codec_id == AV_CODEC_ID_AAC) {
2687  if (pkt->size > 2 && (AV_RB16(pkt->data) & 0xfff0) == 0xfff0)
2688  ret = ff_stream_add_bitstream_filter(st, "aac_adtstoasc", NULL);
2689  } else if (st->codecpar->codec_id == AV_CODEC_ID_VP9) {
2690  ret = ff_stream_add_bitstream_filter(st, "vp9_superframe", NULL);
2691  }
2692 
2693  return ret;
2694 }
2695 
2697  { AV_CODEC_ID_ALAC, 0XFFFFFFFF },
2698  { AV_CODEC_ID_EAC3, 0XFFFFFFFF },
2699  { AV_CODEC_ID_MLP, 0xFFFFFFFF },
2700  { AV_CODEC_ID_OPUS, 0xFFFFFFFF },
2701  { AV_CODEC_ID_PCM_S16BE, 0xFFFFFFFF },
2702  { AV_CODEC_ID_PCM_S24BE, 0xFFFFFFFF },
2703  { AV_CODEC_ID_PCM_S32BE, 0xFFFFFFFF },
2704  { AV_CODEC_ID_QDMC, 0xFFFFFFFF },
2705  { AV_CODEC_ID_QDM2, 0xFFFFFFFF },
2706  { AV_CODEC_ID_RA_144, 0xFFFFFFFF },
2707  { AV_CODEC_ID_RA_288, 0xFFFFFFFF },
2708  { AV_CODEC_ID_COOK, 0xFFFFFFFF },
2709  { AV_CODEC_ID_TRUEHD, 0xFFFFFFFF },
2710  { AV_CODEC_ID_NONE, 0xFFFFFFFF }
2711 };
2712 
2714  { AV_CODEC_ID_RV10, 0xFFFFFFFF },
2715  { AV_CODEC_ID_RV20, 0xFFFFFFFF },
2716  { AV_CODEC_ID_RV30, 0xFFFFFFFF },
2717  { AV_CODEC_ID_RV40, 0xFFFFFFFF },
2718  { AV_CODEC_ID_VP9, 0xFFFFFFFF },
2719  { AV_CODEC_ID_NONE, 0xFFFFFFFF }
2720 };
2721 
2723  { AV_CODEC_ID_DVB_SUBTITLE, 0xFFFFFFFF },
2724  { AV_CODEC_ID_HDMV_PGS_SUBTITLE, 0xFFFFFFFF },
2725  { AV_CODEC_ID_NONE, 0xFFFFFFFF }
2726 };
2727 
2728 #define OFFSET(x) offsetof(MatroskaMuxContext, x)
2729 #define FLAGS AV_OPT_FLAG_ENCODING_PARAM
2730 static const AVOption options[] = {
2731  { "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 },
2732  { "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 },
2733  { "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 },
2734  { "dash", "Create a WebM file conforming to WebM DASH specification", OFFSET(is_dash), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS },
2735  { "dash_track_number", "Track number for the DASH stream", OFFSET(dash_track_number), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 127, FLAGS },
2736  { "live", "Write files assuming it is a live stream.", OFFSET(is_live), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS },
2737  { "allow_raw_vfw", "allow RAW VFW mode", OFFSET(allow_raw_vfw), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS },
2738  { "write_crc32", "write a CRC32 element inside every Level 1 element", OFFSET(write_crc), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, FLAGS },
2739  { NULL },
2740 };
2741 
2742 #if CONFIG_MATROSKA_MUXER
2743 static const AVClass matroska_class = {
2744  .class_name = "matroska muxer",
2745  .item_name = av_default_item_name,
2746  .option = options,
2747  .version = LIBAVUTIL_VERSION_INT,
2748 };
2749 
2751  .name = "matroska",
2752  .long_name = NULL_IF_CONFIG_SMALL("Matroska"),
2753  .mime_type = "video/x-matroska",
2754  .extensions = "mkv",
2755  .priv_data_size = sizeof(MatroskaMuxContext),
2756  .audio_codec = CONFIG_LIBVORBIS_ENCODER ?
2758  .video_codec = CONFIG_LIBX264_ENCODER ?
2760  .init = mkv_init,
2766  .codec_tag = (const AVCodecTag* const []){
2769  },
2770  .subtitle_codec = AV_CODEC_ID_ASS,
2771  .query_codec = mkv_query_codec,
2772  .check_bitstream = mkv_check_bitstream,
2773  .priv_class = &matroska_class,
2774 };
2775 #endif
2776 
2777 #if CONFIG_WEBM_MUXER
2778 static const AVClass webm_class = {
2779  .class_name = "webm muxer",
2780  .item_name = av_default_item_name,
2781  .option = options,
2782  .version = LIBAVUTIL_VERSION_INT,
2783 };
2784 
2786  .name = "webm",
2787  .long_name = NULL_IF_CONFIG_SMALL("WebM"),
2788  .mime_type = "video/webm",
2789  .extensions = "webm",
2790  .priv_data_size = sizeof(MatroskaMuxContext),
2793  .subtitle_codec = AV_CODEC_ID_WEBVTT,
2794  .init = mkv_init,
2798  .check_bitstream = mkv_check_bitstream,
2801  .priv_class = &webm_class,
2802 };
2803 #endif
2804 
2805 #if CONFIG_MATROSKA_AUDIO_MUXER
2806 static const AVClass mka_class = {
2807  .class_name = "matroska audio muxer",
2808  .item_name = av_default_item_name,
2809  .option = options,
2810  .version = LIBAVUTIL_VERSION_INT,
2811 };
2813  .name = "matroska",
2814  .long_name = NULL_IF_CONFIG_SMALL("Matroska Audio"),
2815  .mime_type = "audio/x-matroska",
2816  .extensions = "mka",
2817  .priv_data_size = sizeof(MatroskaMuxContext),
2818  .audio_codec = CONFIG_LIBVORBIS_ENCODER ?
2820  .video_codec = AV_CODEC_ID_NONE,
2821  .init = mkv_init,
2825  .check_bitstream = mkv_check_bitstream,
2828  .codec_tag = (const AVCodecTag* const []){
2830  },
2831  .priv_class = &mka_class,
2832 };
2833 #endif
unsigned int nb_chapters
Number of chapters in AVChapter array.
Definition: avformat.h:1569
static int mkv_write_packet_internal(AVFormatContext *s, AVPacket *pkt, int add_cue)
Definition: matroskaenc.c:2333
int32_t pitch
Rotation around the right vector [-90, 90].
Definition: spherical.h:127
const char * name
Definition: avisynth_c.h:775
Definition: lfg.h:27
#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:345
#define AV_STEREO3D_FLAG_INVERT
Inverted views, Right/Bottom represents the left view.
Definition: stereo3d.h:167
#define MATROSKA_ID_VIDEOPROJECTIONPOSEYAW
Definition: matroska.h:159
static void write_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost, int unqueue)
Definition: ffmpeg.c:679
enum AVChromaLocation chroma_location
Definition: avcodec.h:3974
internal header for HEVC (de)muxer utilities
#define AV_DISPOSITION_METADATA
Definition: avformat.h:856
void avio_wb64(AVIOContext *s, uint64_t val)
Definition: aviobuf.c:463
#define NULL
Definition: coverity.c:32
static int mkv_write_vtt_blocks(AVFormatContext *s, AVIOContext *pb, AVPacket *pkt)
Definition: matroskaenc.c:2200
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
enum AVFieldOrder field_order
Video only.
Definition: avcodec.h:3965
void avio_wl16(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:469
static void put_ebml_size_unknown(AVIOContext *pb, int bytes)
Write an EBML size meaning "unknown size".
Definition: matroskaenc.c:198
const char * s
Definition: avisynth_c.h:768
Bytestream IO Context.
Definition: avio.h:161
enum AVColorTransferCharacteristic color_trc
Definition: avcodec.h:3972
#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
void ff_metadata_conv_ctx(AVFormatContext *ctx, const AVMetadataConv *d_conv, const AVMetadataConv *s_conv)
Definition: metadata.c:59
static const char * format[]
Definition: af_aiir.c:311
#define MATROSKA_ID_DATEUTC
Definition: matroska.h:71
int size
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:117
The optional first identifier line of a WebVTT cue.
Definition: avcodec.h:1299
uint32_t samples
Definition: wv.h:39
int initial
Definition: wv.h:43
#define MATROSKA_ID_TRACKFLAGLACING
Definition: matroska.h:101
unsigned MaxCLL
Max content light level (cd/m^2).
#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:2238
int avio_close_dyn_buf(AVIOContext *s, uint8_t **pbuffer)
Return the written size and a pointer to the buffer.
Definition: aviobuf.c:1420
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
void ff_put_bmp_header(AVIOContext *pb, AVCodecParameters *par, int for_asf, int ignore_extradata)
Definition: riffenc.c:209
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:2643
ebml_master tracks_master
Definition: matroskaenc.c:128
#define MATROSKA_ID_VIDEOPROJECTIONPOSEROLL
Definition: matroska.h:161
#define MATROSKA_ID_CUETRACKPOSITION
Definition: matroska.h:192
enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
Definition: utils.c:3108
#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
#define AV_RB64
Definition: intreadwrite.h:164
void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits, unsigned int pts_num, unsigned int pts_den)
Set the time base and wrapping info for a given stream.
Definition: utils.c:4811
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:587
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:2722
This side data should be associated with a video stream and contains Stereoscopic 3D information in f...
Definition: avcodec.h:1217
static int mkv_write_attachments(AVFormatContext *s)
Definition: matroskaenc.c:1721
uint64_t pts
Definition: matroskaenc.c:79
Video represents a portion of a sphere mapped on a flat surface using equirectangular projection...
Definition: spherical.h:72
static int mkv_write_video_color(AVIOContext *pb, AVCodecParameters *par, AVStream *st)
Definition: matroskaenc.c:866
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:3884
AVRational sample_aspect_ratio
sample aspect ratio (0 if unknown)
Definition: avformat.h:935
#define MATROSKA_ID_TAGTARGETS_ATTACHUID
Definition: matroska.h:214
int num
Numerator.
Definition: rational.h:59
int size
Definition: avcodec.h:1431
uint8_t pi<< 24) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_U8,(uint64_t)((*(const uint8_t *) pi - 0x80U))<< 56) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8,(*(const uint8_t *) pi - 0x80) *(1.0f/(1<< 7))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8,(*(const uint8_t *) pi - 0x80) *(1.0/(1<< 7))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16,(*(const int16_t *) pi >>8)+0x80) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S16,(uint64_t)(*(const int16_t *) pi)<< 48) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, *(const int16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, *(const int16_t *) pi *(1.0/(1<< 15))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32,(*(const int32_t *) pi >>24)+0x80) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S32,(uint64_t)(*(const int32_t *) pi)<< 32) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, *(const int32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, *(const int32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S64,(*(const int64_t *) pi >>56)+0x80) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S64, *(const int64_t *) pi *(1.0f/(INT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S64, *(const int64_t *) pi *(1.0/(INT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, av_clip_uint8(lrintf(*(const float *) pi *(1<< 7))+0x80)) CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, av_clip_int16(lrintf(*(const float *) pi *(1<< 15)))) CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, av_clipl_int32(llrintf(*(const float *) pi *(1U<< 31)))) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_FLT, llrintf(*(const float *) pi *(INT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, av_clip_uint8(lrint(*(const double *) pi *(1<< 7))+0x80)) CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, av_clip_int16(lrint(*(const double *) pi *(1<< 15)))) CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, av_clipl_int32(llrint(*(const double *) pi *(1U<< 31)))) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_DBL, llrint(*(const double *) pi *(INT64_C(1)<< 63))) #define FMT_PAIR_FUNC(out, in) static conv_func_type *const fmt_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), };static void cpy1(uint8_t **dst, const uint8_t **src, int len){ memcpy(*dst, *src, len);} static void cpy2(uint8_t **dst, const uint8_t **src, int len){ memcpy(*dst, *src, 2 *len);} static void cpy4(uint8_t **dst, const uint8_t **src, int len){ memcpy(*dst, *src, 4 *len);} static void cpy8(uint8_t **dst, const uint8_t **src, int len){ memcpy(*dst, *src, 8 *len);} AudioConvert *swri_audio_convert_alloc(enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels, const int *ch_map, int flags) { 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) return NULL;ctx=av_mallocz(sizeof(*ctx));if(!ctx) return NULL;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)){ case 1:ctx->simd_f=cpy1;break;case 2:ctx->simd_f=cpy2;break;case 4:ctx->simd_f=cpy4;break;case 8:ctx->simd_f=cpy8;break;} } if(HAVE_X86ASM &&HAVE_MMX) 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);return ctx;} void swri_audio_convert_free(AudioConvert **ctx) { av_freep(ctx);} int swri_audio_convert(AudioConvert *ctx, AudioData *out, AudioData *in, int len) { int ch;int off=0;const int os=(out->planar ? 1 :out->ch_count) *out->bps;unsigned misaligned=0;av_assert0(ctx->channels==out->ch_count);if(ctx->in_simd_align_mask) { int planes=in->planar ? in->ch_count :1;unsigned m=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) { int planes=out->planar ? out->ch_count :1;unsigned m=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){ int planes=out->planar ? out->ch_count :1;for(ch=0;ch< planes;ch++){ ctx->simd_f(out-> ch ch
Definition: audioconvert.c:56
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:1080
const char * b
Definition: vf_curves.c:113
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
Definition: aviobuf.c:246
#define MATROSKA_ID_FILEDATA
Definition: matroska.h:246
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:191
AVFormatInternal * internal
An opaque field for libavformat internal usage.
Definition: avformat.h:1793
#define EBML_ID_DOCTYPEREADVERSION
Definition: matroska.h:42
#define MATROSKA_ID_BLOCKREFERENCE
Definition: matroska.h:237
#define AV_RB24
Definition: intreadwrite.h:64
static int mkv_write_header(AVFormatContext *s)
Definition: matroskaenc.c:1843
#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
Video represents a sphere mapped on a flat surface using equirectangular projection.
Definition: spherical.h:56
#define MATROSKA_ID_MUXINGAPP
Definition: matroska.h:70
int64_t cluster_time_limit
Definition: matroskaenc.c:149
#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:3098
int64_t segment_offset
Definition: matroskaenc.c:88
const char * key
int version
Definition: avisynth_c.h:766
int avoid_negative_ts_use_pts
Definition: internal.h:121
const char * master
Definition: vf_curves.c:114
#define MATROSKA_ID_VIDEOPROJECTIONTYPE
Definition: matroska.h:157
AVPacketSideData * side_data
An array of side data that applies to the whole stream (i.e.
Definition: avformat.h:975
Views are next to each other.
Definition: stereo3d.h:67
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:349
AVDictionary * metadata
Definition: avformat.h:1303
#define MATROSKA_ID_VIDEOCOLORCHROMASITINGHORZ
Definition: matroska.h:135
mkv_track * tracks
Definition: matroskaenc.c:138
#define src
Definition: vp8dsp.c:254
#define AVFMT_ALLOW_FLUSH
Format allows flushing.
Definition: avformat.h:478
#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:1391
#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:479
This struct describes the properties of an encoded stream.
Definition: avcodec.h:3876
#define MATROSKA_ID_CHAPTERTIMEEND
Definition: matroska.h:253
enum AVColorSpace color_space
Definition: avcodec.h:3973
int64_t pos
absolute offset in the file where the master&#39;s elements start
Definition: matroskaenc.c:60
MatroskaVideoStereoModeType
Definition: matroska.h:300
Mastering display metadata (based on SMPTE-2086:2014).
Definition: avcodec.h:1325
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:2729
#define MATROSKA_ID_FILEDESC
Definition: matroska.h:243
Format I/O context.
Definition: avformat.h:1342
#define EBML_ID_CRC32
Definition: matroska.h:46
UID uid
Definition: mxfenc.c:1946
char str[32]
Definition: internal.h:50
int64_t cluster_pos
file offset of the current cluster
Definition: matroskaenc.c:132
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:2696
Public dictionary API.
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:97
void avio_wl32(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:369
uint8_t
#define MATROSKA_ID_VIDEOCOLOR_BX
Definition: matroska.h:149
#define MATROSKA_ID_CHAPLANG
Definition: matroska.h:256
#define av_malloc(s)
int width
Video only.
Definition: avcodec.h:3950
static int mkv_write_tag(AVFormatContext *s, AVDictionary *m, unsigned int elementid, unsigned int uid, ebml_master *tags)
Definition: matroskaenc.c:1600
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:1982
Stereo 3D type: this structure describes how two videos are packed within a single video surface...
Definition: stereo3d.h:176
const AVCodecTag ff_codec_movvideo_tags[]
Definition: isom.c:75
static int ebml_id_size(unsigned int id)
Definition: matroskaenc.c:181
#define OPUS_SEEK_PREROLL
Seek preroll value for opus.
Definition: matroskaenc.c:179
uint32_t flags
Definition: wv.h:40
#define AV_RB32
Definition: intreadwrite.h:130
int ff_mkv_stereo3d_conv(AVStream *st, MatroskaVideoStereoModeType stereo_mode)
Definition: matroska.c:155
static av_cold int end(AVCodecContext *avctx)
Definition: avrndec.c:90
uint64_t segmentpos
Definition: matroskaenc.c:66
int id
unique ID to identify the chapter
Definition: avformat.h:1300
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
Definition: avcodec.h:1448
#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:799
#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:979
void avio_write_marker(AVIOContext *s, int64_t time, enum AVIODataMarkerType type)
Mark the written bytestream as a specific type.
Definition: aviobuf.c:493
uint8_t * av_stream_get_side_data(const AVStream *stream, enum AVPacketSideDataType type, int *size)
Get side information from stream.
Definition: utils.c:5405
#define MATROSKA_ID_BLOCKMORE
Definition: matroska.h:229
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1410
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:128
#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:4013
const char data[16]
Definition: mxf.c:90
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:1473
uint8_t * data
Definition: avcodec.h:1430
static double av_q2d(AVRational a)
Convert an AVRational to a double.
Definition: rational.h:104
#define CONFIG_LIBVPX_VP9_ENCODER
Definition: config.h:1367
static int64_t mkv_write_cues(AVFormatContext *s, mkv_cues *cues, mkv_track *tracks, int num_tracks)
Definition: matroskaenc.c:576
#define MATROSKA_ID_VIDEODISPLAYWIDTH
Definition: matroska.h:112
static int flags
Definition: log.c:55
#define MATROSKA_ID_BLOCKADDITIONS
Definition: matroska.h:228
uint32_t tag
Definition: movenc.c:1455
Not part of ABI.
Definition: pixfmt.h:500
#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:1374
#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:330
int64_t ts_offset
Definition: matroskaenc.c:99
Video is not stereoscopic (and metadata has to be there).
Definition: stereo3d.h:55
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
Definition: avio.h:557
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:218
Definition: wv.h:34
#define AVFMT_FLAG_BITEXACT
When muxing, try to avoid writing any random/volatile data to the output.
Definition: avformat.h:1490
void * av_realloc_array(void *ptr, size_t nmemb, size_t size)
Allocate, reallocate, or free an array.
Definition: mem.c:198
#define MATROSKA_ID_SEGMENTUID
Definition: matroska.h:72
AVOutputFormat ff_webm_muxer
uint64_t channel_layout
Audio only.
Definition: avcodec.h:3986
static void put_ebml_num(AVIOContext *pb, uint64_t num, int bytes)
Write a number in EBML variable length format.
Definition: matroskaenc.c:222
#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:854
static int mkv_add_seekhead_entry(mkv_seekhead *seekhead, unsigned int elementid, uint64_t filepos)
Definition: matroskaenc.c:464
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:1361
int av_packet_ref(AVPacket *dst, const AVPacket *src)
Setup a new reference to the data described by a given packet.
Definition: avpacket.c:601
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: avcodec.h:1462
#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:129
static int mkv_write_simpletag(AVIOContext *pb, AVDictionaryEntry *t)
Definition: matroskaenc.c:1527
#define MATROSKA_ID_VIDEOSTEREOMODE
Definition: matroska.h:123
uint32_t chapter_id_offset
Definition: matroskaenc.c:155
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:5611
Content light level needed by to transmit HDR over HDMI (CTA-861.3).
AVPacket cur_audio_pkt
Definition: matroskaenc.c:141
AVCodecID
Identify the syntax and semantics of the bitstream.
Definition: avcodec.h:215
static int mkv_write_tags(AVFormatContext *s)
Definition: matroskaenc.c:1635
#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:2003
#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:1495
AVDictionary * metadata
Metadata that applies to the whole file.
Definition: avformat.h:1580
int flags
Additional information about the frame packing.
Definition: stereo3d.h:185
#define MATROSKA_ID_BLOCKDURATION
Definition: matroska.h:236
#define EBML_ID_EBMLREADVERSION
Definition: matroska.h:37
#define MATROSKA_ID_VIDEOCOLORMAXCLL
Definition: matroska.h:141
#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:173
#define MATROSKA_ID_VIDEOCOLOR_WHITEX
Definition: matroska.h:151
static int get_aac_sample_rates(AVFormatContext *s, uint8_t *extradata, int extradata_size, int *sample_rate, int *output_sample_rate)
Definition: matroskaenc.c:720
static void end_ebml_master_crc32_preliminary(AVIOContext *pb, AVIOContext **dyn_cp, MatroskaMuxContext *mkv, ebml_master master)
Complete ebml master whithout destroying the buffer, allowing for later updates.
Definition: matroskaenc.c:375
#define AV_RB16
Definition: intreadwrite.h:53
#define AVERROR(e)
Definition: error.h:43
unsigned int elementid
Definition: matroskaenc.c:65
uint8_t * av_packet_get_side_data(const AVPacket *pkt, enum AVPacketSideDataType type, int *size)
Get side information from packet.
Definition: avpacket.c:350
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:186
Views are packed per line, as if interlaced.
Definition: stereo3d.h:129
enum AVColorPrimaries color_primaries
Definition: avcodec.h:3971
#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
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:1096
Not part of ABI.
Definition: pixfmt.h:437
AVIOContext * tracks_bc
Definition: matroskaenc.c:127
const char *const ff_matroska_video_stereo_mode[MATROSKA_VIDEO_STEREOMODE_TYPE_NB]
Definition: matroska.c:131
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:2035
enum AVMediaType codec_type
General type of the encoded data.
Definition: avcodec.h:3880
static int ebml_num_size(uint64_t num)
Calculate how many bytes are needed to represent a given number in EBML.
Definition: matroskaenc.c:208
int write_dts
Definition: matroskaenc.c:94
int final
Definition: wv.h:43
AVChapter ** chapters
Definition: avformat.h:1570
enum AVCodecID id
Definition: matroska.h:354
enum AVPacketSideDataType type
Definition: avcodec.h:1376
enum AVMediaType avcodec_get_type(enum AVCodecID codec_id)
Get the type of the given codec.
Definition: codec_desc.c:3160
static int mkv_write_chapters(AVFormatContext *s)
Definition: matroskaenc.c:1469
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:236
static int mkv_check_tag(AVDictionary *m, unsigned int elementid)
Definition: matroskaenc.c:1624
#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
AVRational avg_frame_rate
Average framerate.
Definition: avformat.h:946
const AVCodecTag ff_codec_wav_tags[]
Definition: riff.c:475
#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:443
int ff_avc_parse_nal_units_buf(const uint8_t *buf_in, uint8_t **buf, int *size)
Definition: avc.c:93
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:1992
int64_t filepos
Definition: matroskaenc.c:70
#define fail()
Definition: checkasm.h:116
int flags
A combination of AV_PKT_FLAG values.
Definition: avcodec.h:1436
int extradata_size
Size of the extradata content in bytes.
Definition: avcodec.h:3902
const CodecMime ff_mkv_mime_tags[]
Definition: matroska.c:115
#define MATROSKA_ID_TAG
Definition: matroska.h:202
Views are alternated temporally.
Definition: stereo3d.h:92
#define AV_DISPOSITION_FORCED
Track should be used during playback by default.
Definition: avformat.h:831
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
Definition: avformat.h:1398
uint32_t bound_bottom
Distance from the bottom edge.
Definition: spherical.h:170
AVOutputFormat ff_matroska_audio_muxer
#define LIBAVFORMAT_IDENT
Definition: version.h:46
int seekable
A combination of AVIO_SEEKABLE_ flags or 0 when the stream is not seekable.
Definition: avio.h:260
Video frame is split into 6 faces of a cube, and arranged on a 3x2 layout.
Definition: spherical.h:65
int void avio_flush(AVIOContext *s)
Force flushing of buffered data.
Definition: aviobuf.c:238
#define MATROSKA_ID_VIDEOCOLOR_LUMINANCEMIN
Definition: matroska.h:154
audio channel layout utility functions
int ff_alloc_extradata(AVCodecParameters *par, int size)
Allocate extradata with additional AV_INPUT_BUFFER_PADDING_SIZE at end which is always set to 0...
Definition: utils.c:3271
#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:204
#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:664
static void mkv_free(MatroskaMuxContext *mkv)
Free the members allocated in the mux context.
Definition: matroskaenc.c:397
#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:492
static int mkv_write_native_codecprivate(AVFormatContext *s, AVIOContext *pb, AVCodecParameters *par, AVIOContext *dyn_cp)
Definition: matroskaenc.c:753
void av_sha_update(struct AVSHA *ctx, const uint8_t *data, unsigned int len)
Update hash value.
Definition: sha.c:315
static int64_t get_metadata_duration(AVFormatContext *s)
Definition: matroskaenc.c:1819
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:152
#define AVFMT_GLOBALHEADER
Format wants global header.
Definition: avformat.h:468
This side data should be associated with a video stream and corresponds to the AVSphericalMapping str...
Definition: avcodec.h:1331
uint32_t bound_right
Distance from the right edge.
Definition: spherical.h:169
int ff_wv_parse_header(WvHeader *wv, const uint8_t *data)
Parse a WavPack block header.
Definition: wv.c:29
#define MATROSKA_ID_SIMPLETAG
Definition: matroska.h:203
const char * name
Definition: avformat.h:507
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:392
#define AV_WB24(p, d)
Definition: intreadwrite.h:450
static int mkv_check_new_extra_data(AVFormatContext *s, AVPacket *pkt)
Definition: matroskaenc.c:2256
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:1671
#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
#define CONFIG_LIBVORBIS_ENCODER
Definition: config.h:1365
#define AV_RL32
Definition: intreadwrite.h:146
int32_t yaw
Rotation around the up vector [-180, 180].
Definition: spherical.h:126
AVDictionary * metadata
Definition: avformat.h:937
enum AVCodecID codec_id
Definition: vaapi_decode.c:362
enum AVColorRange color_range
Video only.
Definition: avcodec.h:3970
AVIOContext * info_bc
Definition: matroskaenc.c:125
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:2728
#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:1127
#define av_log2
Definition: intmath.h:83
static void end_ebml_master_crc32(AVIOContext *pb, AVIOContext **dyn_cp, MatroskaMuxContext *mkv, ebml_master master)
Definition: matroskaenc.c:348
uint32_t padding
Number of pixels to pad from the edge of each cube face.
Definition: spherical.h:182
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:553
static void put_ebml_float(AVIOContext *pb, unsigned int elementid, double val)
Definition: matroskaenc.c:267
Stream structure.
Definition: avformat.h:873
#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:282
int64_t end
chapter start/end time in time_base units
Definition: avformat.h:1302
Content light level (based on CTA-861.3).
Definition: avcodec.h:1338
static int mkv_write_track(AVFormatContext *s, MatroskaMuxContext *mkv, int i, AVIOContext *pb, int default_stream_exists)
Definition: matroskaenc.c:1170
#define AVIO_SEEKABLE_NORMAL
Seeking works like for a local file.
Definition: avio.h:40
The AV_PKT_DATA_NEW_EXTRADATA is used to notify the codec or the format that the extradata buffer was...
Definition: avcodec.h:1158
#define AV_DISPOSITION_DEFAULT
Definition: avformat.h:819
sample_rate
enum AVStereo3DType type
How views are packed within the video.
Definition: stereo3d.h:180
Views are packed in a checkerboard-like structure per pixel.
Definition: stereo3d.h:104
#define MATROSKA_ID_VIDEOCOLORMATRIXCOEFF
Definition: matroska.h:129
#define AV_DISPOSITION_DESCRIPTIONS
Definition: avformat.h:855
char * av_strdup(const char *s)
Duplicate a string.
Definition: mem.c:251
#define MATROSKA_ID_TRACKFLAGFORCED
Definition: matroska.h:100
#define MATROSKA_ID_TAGS
Definition: matroska.h:59
Views are on top of each other.
Definition: stereo3d.h:79
#define MATROSKA_ID_VIDEOCOLORPRIMARIES
Definition: matroska.h:140
int64_t sample_rate_offset
Definition: matroskaenc.c:97
#define MATROSKA_ID_VIDEOPROJECTIONPOSEPITCH
Definition: matroska.h:160
#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:1384
int64_t codecpriv_offset
Definition: matroskaenc.c:98
void avio_w8(AVIOContext *s, int b)
Definition: aviobuf.c:196
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:592
#define MATROSKA_ID_TAGTARGETS_TRACKUID
Definition: matroska.h:212
static const EbmlSyntax ebml_header[]
Definition: matroskadec.c:382
mkv_attachment * entries
Definition: matroskaenc.c:108
uint32_t fileuid
Definition: matroskaenc.c:104
#define MATROSKA_ID_TAGLANG
Definition: matroska.h:206
static int mkv_check_tag_name(const char *name, unsigned int elementid)
Definition: matroskaenc.c:1586
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:47
#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:1294
#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
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:2579
#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:176
#define MATROSKA_ID_BLOCKGROUP
Definition: matroska.h:227
#define MATROSKA_ID_VIDEOPIXELHEIGHT
Definition: matroska.h:115
int32_t roll
Rotation around the forward vector [-180, 180].
Definition: spherical.h:128
static int mkv_write_tracks(AVFormatContext *s)
Definition: matroskaenc.c:1437
Rational number (pair of numerator and denominator).
Definition: rational.h:58
Mastering display metadata capable of representing the color volume of the display used to master the...
static void put_ebml_uint(AVIOContext *pb, unsigned int elementid, uint64_t val)
Definition: matroskaenc.c:241
#define MATROSKA_ID_CUEDURATION
Definition: matroska.h:198
#define MATROSKA_ID_CUETIME
Definition: matroska.h:191
Not part of ABI.
Definition: pixfmt.h:466
AVFieldOrder
Definition: avcodec.h:1496
Recommmends skipping the specified number of samples.
Definition: avcodec.h:1259
cl_device_type type
AVIOContext * dyn_bc
Definition: matroskaenc.c:122
AVMediaType
Definition: avutil.h:199
av_cold void av_lfg_init(AVLFG *c, unsigned int seed)
Definition: lfg.c:32
int64_t duration_offset
Definition: matroskaenc.c:134
#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:2046
This structure describes how to handle spherical videos, outlining information about projection...
Definition: spherical.h:82
static void put_ebml_id(AVIOContext *pb, unsigned int id)
Definition: matroskaenc.c:186
#define MATROSKA_ID_VIDEOPROJECTION
Definition: matroska.h:156
#define MATROSKA_ID_VIDEOCOLORMASTERINGMETA
Definition: matroska.h:144
misc parsing utilities
#define CONFIG_LIBOPUS_ENCODER
Definition: config.h:1359
#define MATROSKA_ID_VIDEOPROJECTIONPRIVATE
Definition: matroska.h:158
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:254
#define MATROSKA_ID_ATTACHMENTS
Definition: matroska.h:61
static int64_t pts
void avio_wb16(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:475
int64_t * stream_duration_offsets
Definition: matroskaenc.c:161
#define MATROSKA_ID_CHAPTERDISPLAY
Definition: matroska.h:254
static int put_xiph_codecpriv(AVFormatContext *s, AVIOContext *pb, AVCodecParameters *par)
Definition: matroskaenc.c:636
int bits_per_raw_sample
This is the number of valid bits in each output sample.
Definition: avcodec.h:3939
#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
uint32_t bound_top
Distance from the top edge.
Definition: spherical.h:168
const AVMetadataConv ff_mkv_metadata_conv[]
Definition: matroska.c:125
#define MATROSKA_ID_CODECID
Definition: matroska.h:88
static const AVCodecTag additional_video_tags[]
Definition: matroskaenc.c:2713
static int put_flac_codecpriv(AVFormatContext *s, AVIOContext *pb, AVCodecParameters *par)
Definition: matroskaenc.c:673
#define MATROSKA_ID_VIDEOFIELDORDER
Definition: matroska.h:122
int64_t start
Definition: avformat.h:1302
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:374
int sample_rate
Audio only.
Definition: avcodec.h:3994
#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:2511
Main libavformat public API header.
static int mkv_check_bitstream(struct AVFormatContext *s, const AVPacket *pkt)
Definition: matroskaenc.c:2681
attribute_deprecated int64_t convergence_duration
Definition: avcodec.h:1459
#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:158
#define MATROSKA_ID_CODECDELAY
Definition: matroska.h:94
#define FF_DISABLE_DEPRECATION_WARNINGS
Definition: internal.h:84
#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:274
enum AVSphericalProjection projection
Projection type.
Definition: spherical.h:86
Utilties for rational number calculation.
int ffio_init_context(AVIOContext *s, unsigned char *buffer, int buffer_size, int write_flag, void *opaque, int(*read_packet)(void *opaque, uint8_t *buf, int buf_size), int(*write_packet)(void *opaque, uint8_t *buf, int buf_size), int64_t(*seek)(void *opaque, int64_t offset, int whence))
Definition: aviobuf.c:81
static double c[64]
static void mkv_write_block(AVFormatContext *s, AVIOContext *pb, unsigned int blockid, AVPacket *pkt, int keyframe)
Definition: matroskaenc.c:2099
static int mkv_write_flush_packet(AVFormatContext *s, AVPacket *pkt)
Definition: matroskaenc.c:2490
int disposition
AV_DISPOSITION_* bit field.
Definition: avformat.h:926
static void put_ebml_void(AVIOContext *pb, uint64_t size)
Write a void element of a given size.
Definition: matroskaenc.c:294
Stereoscopic video.
Views are packed per column.
Definition: stereo3d.h:141
AVRational time_base
time base in which the start/end timestamps are specified
Definition: avformat.h:1301
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
#define MATROSKA_ID_SEGMENT
Definition: matroska.h:53
#define MAX_PCE_SIZE
Maximum size of a PCE including the 3-bit ID_PCE.
Definition: mpeg4audio.h:119
int avpriv_mpeg4audio_get_config(MPEG4AudioConfig *c, const uint8_t *buf, int bit_size, int sync_extension)
Parse MPEG-4 systems extradata from a raw buffer to retrieve audio configuration. ...
Definition: mpeg4audio.c:155
The optional settings (rendering instructions) that immediately follow the timestamp specifier of a W...
Definition: avcodec.h:1305
#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:122
mkv_attachments * attachments
Definition: matroskaenc.c:139
#define AVFMT_VARIABLE_FPS
Format allows variable fps.
Definition: avformat.h:472
ebml_master cluster
Definition: matroskaenc.c:131
#define av_free(p)
char * value
Definition: dict.h:87
#define FF_ENABLE_DEPRECATION_WARNINGS
Definition: internal.h:85
#define MATROSKA_ID_POINTENTRY
Definition: matroska.h:188
mkv_seekhead_entry * entries
Definition: matroskaenc.c:74
int len
static int mkv_write_stereo_mode(AVFormatContext *s, AVIOContext *pb, AVStream *st, int mode, int *h_width, int *h_height)
Definition: matroskaenc.c:1072
#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:5474
static int mkv_write_tag_targets(AVFormatContext *s, unsigned int elementid, unsigned int uid, ebml_master *tags, ebml_master *tag)
Definition: matroskaenc.c:1561
void * priv_data
Format private data.
Definition: avformat.h:1370
#define MATROSKA_ID_CHAPTERUID
Definition: matroska.h:262
static void write_header(FFV1Context *f)
Definition: ffv1enc.c:337
uint32_t bound_left
Distance from the left edge.
Definition: spherical.h:167
int bits_per_coded_sample
The number of bits per sample in the codedwords.
Definition: avcodec.h:3926
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:3898
#define MATROSKA_ID_VIDEOCOLORMAXFALL
Definition: matroska.h:142
#define MATROSKA_ID_VIDEODISPLAYUNIT
Definition: matroska.h:120
int channels
Audio only.
Definition: avcodec.h:3990
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed...
Definition: avcodec.h:1429
static const AVOption options[]
Definition: matroskaenc.c:2730
#define EBML_ID_EBMLMAXSIZELENGTH
Definition: matroska.h:39
void avio_wb32(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:377
int64_t duration
Duration of the stream, in AV_TIME_BASE fractional seconds.
Definition: avformat.h:1457
#define MATROSKA_ID_CHAPSTRING
Definition: matroska.h:255
int sample_rate
Definition: matroskaenc.c:96
#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
#define MODE_MATROSKAv2
Definition: matroskaenc.c:112
uint32_t av_get_random_seed(void)
Get a seed to use in conjunction with random functions.
Definition: random_seed.c:120
AVOutputFormat ff_matroska_muxer
const CodecMime ff_mkv_image_mime_tags[]
Definition: matroska.c:106
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:1020
ebml_master info
Definition: matroskaenc.c:126
uint32_t codec_tag
Additional information about the codec (corresponds to the AVI FOURCC).
Definition: avcodec.h:3888
#define MODE_WEBM
Definition: matroskaenc.c:113
static int mkv_write_packet(AVFormatContext *s, AVPacket *pkt)
Definition: matroskaenc.c:2415
ebml_master tags
Definition: matroskaenc.c:124
#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:169
static mkv_cues * mkv_start_cues(int64_t segment_offset)
Definition: matroskaenc.c:543
int stream_index
Definition: avcodec.h:1432
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:902
static void end_ebml_master(AVIOContext *pb, ebml_master master)
Definition: matroskaenc.c:320
int64_t segment_offset
Definition: matroskaenc.c:130
#define CONFIG_LIBX264_ENCODER
Definition: config.h:1372
#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:311
mkv_seekhead * main_seekhead
Definition: matroskaenc.c:136
enum AVCodecID id
unsigned MaxFALL
Max average light level per frame (cd/m^2).
This structure stores compressed data.
Definition: avcodec.h:1407
int64_t * stream_durations
Definition: matroskaenc.c:160
static void mkv_write_field_order(AVIOContext *pb, int mode, enum AVFieldOrder field_order)
Definition: matroskaenc.c:1033
mode
Use these values in ebur128_init (or&#39;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:2626
static void put_xiph_size(AVIOContext *pb, int size)
Definition: matroskaenc.c:388
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: avcodec.h:1423
Not part of ABI.
Definition: pixfmt.h:490
#define MATROSKA_ID_VIDEOPIXELWIDTH
Definition: matroska.h:114
int ff_isom_write_avcc(AVIOContext *pb, const uint8_t *data, int len)
Definition: avc.c:107
#define MATROSKA_ID_TRACKAUDIO
Definition: matroska.h:82
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
int(* filler)(InterplayACMContext *s, unsigned ind, unsigned col)
Definition: interplayacm.c:407
AVIOContext * tags_bc
Definition: matroskaenc.c:123
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:54
static int mkv_write_video_projection(AVFormatContext *s, AVIOContext *pb, AVStream *st)
Definition: matroskaenc.c:956
void * av_mallocz_array(size_t nmemb, size_t size)
Allocate a memory block for an array with av_mallocz().
Definition: mem.c:191
int avio_get_dyn_buf(AVIOContext *s, uint8_t **pbuffer)
Return the written size and a pointer to the buffer.
Definition: aviobuf.c:1403
static uint8_t tmp[11]
Definition: aes_ctr.c:26