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matroskaenc.c
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1 /*
2  * Matroska muxer
3  * Copyright (c) 2007 David Conrad
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 #include <stdint.h>
23 
24 #include "av1.h"
25 #include "avc.h"
26 #include "hevc.h"
27 #include "avformat.h"
28 #include "avio_internal.h"
29 #include "avlanguage.h"
30 #include "flacenc.h"
31 #include "internal.h"
32 #include "isom.h"
33 #include "matroska.h"
34 #include "riff.h"
35 #include "subtitles.h"
36 #include "vorbiscomment.h"
37 #include "wv.h"
38 
39 #include "libavutil/avstring.h"
41 #include "libavutil/crc.h"
42 #include "libavutil/dict.h"
43 #include "libavutil/intfloat.h"
44 #include "libavutil/intreadwrite.h"
45 #include "libavutil/lfg.h"
47 #include "libavutil/mathematics.h"
48 #include "libavutil/opt.h"
49 #include "libavutil/parseutils.h"
50 #include "libavutil/random_seed.h"
51 #include "libavutil/rational.h"
52 #include "libavutil/samplefmt.h"
53 #include "libavutil/sha.h"
54 #include "libavutil/stereo3d.h"
55 
56 #include "libavcodec/xiph.h"
57 #include "libavcodec/mpeg4audio.h"
58 #include "libavcodec/internal.h"
59 
60 typedef struct ebml_master {
61  int64_t pos; ///< absolute offset in the file where the master's elements start
62  int sizebytes; ///< how many bytes were reserved for the size
63 } ebml_master;
64 
65 typedef struct mkv_seekhead_entry {
66  unsigned int elementid;
67  uint64_t segmentpos;
69 
70 typedef struct mkv_seekhead {
71  int64_t filepos;
72  int64_t segment_offset; ///< the file offset to the beginning of the segment
73  int reserved_size; ///< -1 if appending to file
77 } mkv_seekhead;
78 
79 typedef struct mkv_cuepoint {
80  uint64_t pts;
82  int tracknum;
83  int64_t cluster_pos; ///< file offset of the cluster containing the block
84  int64_t relative_pos; ///< relative offset from the position of the cluster containing the block
85  int64_t duration; ///< duration of the block according to time base
86 } mkv_cuepoint;
87 
88 typedef struct mkv_cues {
89  int64_t segment_offset;
92 } mkv_cues;
93 
94 typedef struct mkv_track {
95  int write_dts;
96  int has_cue;
100  int64_t ts_offset;
101 } mkv_track;
102 
103 typedef struct mkv_attachment {
105  uint32_t fileuid;
107 
108 typedef struct mkv_attachments {
112 
113 #define MODE_MATROSKAv2 0x01
114 #define MODE_WEBM 0x02
115 
116 /** Maximum number of tracks allowed in a Matroska file (with track numbers in
117  * range 1 to 126 (inclusive) */
118 #define MAX_TRACKS 126
119 
120 typedef struct MatroskaMuxContext {
121  const AVClass *class;
122  int mode;
131  int64_t segment_offset;
133  int64_t cluster_pos; ///< file offset of the current cluster
134  int64_t cluster_pts;
136  int64_t duration;
141 
143 
146 
149  int64_t cues_pos;
151  int is_dash;
153  int is_live;
155 
158 
160 
163 
166 
167 
168 /** 2 bytes * 3 for EBML IDs, 3 1-byte EBML lengths, 8 bytes for 64 bit
169  * offset, 4 bytes for target EBML ID */
170 #define MAX_SEEKENTRY_SIZE 21
171 
172 /** per-cuepoint-track - 5 1-byte EBML IDs, 5 1-byte EBML sizes, 4
173  * 8-byte uint max */
174 #define MAX_CUETRACKPOS_SIZE 42
175 
176 /** per-cuepoint - 2 1-byte EBML IDs, 2 1-byte EBML sizes, 8-byte uint max */
177 #define MAX_CUEPOINT_SIZE(num_tracks) 12 + MAX_CUETRACKPOS_SIZE * num_tracks
178 
179 /** Seek preroll value for opus */
180 #define OPUS_SEEK_PREROLL 80000000
181 
182 static int ebml_id_size(unsigned int id)
183 {
184  return (av_log2(id + 1) - 1) / 7 + 1;
185 }
186 
187 static void put_ebml_id(AVIOContext *pb, unsigned int id)
188 {
189  int i = ebml_id_size(id);
190  while (i--)
191  avio_w8(pb, (uint8_t)(id >> (i * 8)));
192 }
193 
194 /**
195  * Write an EBML size meaning "unknown size".
196  *
197  * @param bytes The number of bytes the size should occupy (maximum: 8).
198  */
199 static void put_ebml_size_unknown(AVIOContext *pb, int bytes)
200 {
201  av_assert0(bytes <= 8);
202  avio_w8(pb, 0x1ff >> bytes);
203  ffio_fill(pb, 0xff, bytes - 1);
204 }
205 
206 /**
207  * Calculate how many bytes are needed to represent a given number in EBML.
208  */
209 static int ebml_num_size(uint64_t num)
210 {
211  int bytes = 1;
212  while ((num + 1) >> bytes * 7)
213  bytes++;
214  return bytes;
215 }
216 
217 /**
218  * Write a number in EBML variable length format.
219  *
220  * @param bytes The number of bytes that need to be used to write the number.
221  * If zero, any number of bytes can be used.
222  */
223 static void put_ebml_num(AVIOContext *pb, uint64_t num, int bytes)
224 {
225  int i, needed_bytes = ebml_num_size(num);
226 
227  // sizes larger than this are currently undefined in EBML
228  av_assert0(num < (1ULL << 56) - 1);
229 
230  if (bytes == 0)
231  // don't care how many bytes are used, so use the min
232  bytes = needed_bytes;
233  // the bytes needed to write the given size would exceed the bytes
234  // that we need to use, so write unknown size. This shouldn't happen.
235  av_assert0(bytes >= needed_bytes);
236 
237  num |= 1ULL << bytes * 7;
238  for (i = bytes - 1; i >= 0; i--)
239  avio_w8(pb, (uint8_t)(num >> i * 8));
240 }
241 
242 static void put_ebml_uint(AVIOContext *pb, unsigned int elementid, uint64_t val)
243 {
244  int i, bytes = 1;
245  uint64_t tmp = val;
246  while (tmp >>= 8)
247  bytes++;
248 
249  put_ebml_id(pb, elementid);
250  put_ebml_num(pb, bytes, 0);
251  for (i = bytes - 1; i >= 0; i--)
252  avio_w8(pb, (uint8_t)(val >> i * 8));
253 }
254 
255 static void put_ebml_sint(AVIOContext *pb, unsigned int elementid, int64_t val)
256 {
257  int i, bytes = 1;
258  uint64_t tmp = 2*(val < 0 ? val^-1 : val);
259 
260  while (tmp>>=8) bytes++;
261 
262  put_ebml_id(pb, elementid);
263  put_ebml_num(pb, bytes, 0);
264  for (i = bytes - 1; i >= 0; i--)
265  avio_w8(pb, (uint8_t)(val >> i * 8));
266 }
267 
268 static void put_ebml_float(AVIOContext *pb, unsigned int elementid, double val)
269 {
270  put_ebml_id(pb, elementid);
271  put_ebml_num(pb, 8, 0);
272  avio_wb64(pb, av_double2int(val));
273 }
274 
275 static void put_ebml_binary(AVIOContext *pb, unsigned int elementid,
276  const void *buf, int size)
277 {
278  put_ebml_id(pb, elementid);
279  put_ebml_num(pb, size, 0);
280  avio_write(pb, buf, size);
281 }
282 
283 static void put_ebml_string(AVIOContext *pb, unsigned int elementid,
284  const char *str)
285 {
286  put_ebml_binary(pb, elementid, str, strlen(str));
287 }
288 
289 /**
290  * Write a void element of a given size. Useful for reserving space in
291  * the file to be written to later.
292  *
293  * @param size The number of bytes to reserve, which must be at least 2.
294  */
295 static void put_ebml_void(AVIOContext *pb, uint64_t size)
296 {
297  int64_t currentpos = avio_tell(pb);
298 
299  av_assert0(size >= 2);
300 
302  // we need to subtract the length needed to store the size from the
303  // size we need to reserve so 2 cases, we use 8 bytes to store the
304  // size if possible, 1 byte otherwise
305  if (size < 10)
306  put_ebml_num(pb, size - 2, 0);
307  else
308  put_ebml_num(pb, size - 9, 8);
309  ffio_fill(pb, 0, currentpos + size - avio_tell(pb));
310 }
311 
312 static ebml_master start_ebml_master(AVIOContext *pb, unsigned int elementid,
313  uint64_t expectedsize)
314 {
315  int bytes = expectedsize ? ebml_num_size(expectedsize) : 8;
316  put_ebml_id(pb, elementid);
317  put_ebml_size_unknown(pb, bytes);
318  return (ebml_master) {avio_tell(pb), bytes };
319 }
320 
322 {
323  int64_t pos = avio_tell(pb);
324 
325  if (avio_seek(pb, master.pos - master.sizebytes, SEEK_SET) < 0)
326  return;
327  put_ebml_num(pb, pos - master.pos, master.sizebytes);
328  avio_seek(pb, pos, SEEK_SET);
329 }
330 
332  ebml_master *master, unsigned int elementid, uint64_t expectedsize)
333 {
334  int ret;
335 
336  if ((ret = avio_open_dyn_buf(dyn_cp)) < 0)
337  return ret;
338 
339  if (pb->seekable & AVIO_SEEKABLE_NORMAL) {
340  *master = start_ebml_master(pb, elementid, expectedsize);
341  if (mkv->write_crc && mkv->mode != MODE_WEBM)
342  put_ebml_void(*dyn_cp, 6); /* Reserve space for CRC32 so position/size calculations using avio_tell() take it into account */
343  } else
344  *master = start_ebml_master(*dyn_cp, elementid, expectedsize);
345 
346  return 0;
347 }
348 
351 {
352  uint8_t *buf, crc[4];
353  int size, skip = 0;
354 
355  if (pb->seekable & AVIO_SEEKABLE_NORMAL) {
356  size = avio_close_dyn_buf(*dyn_cp, &buf);
357  if (mkv->write_crc && mkv->mode != MODE_WEBM) {
358  skip = 6; /* Skip reserved 6-byte long void element from the dynamic buffer. */
359  AV_WL32(crc, av_crc(av_crc_get_table(AV_CRC_32_IEEE_LE), UINT32_MAX, buf + skip, size - skip) ^ UINT32_MAX);
360  put_ebml_binary(pb, EBML_ID_CRC32, crc, sizeof(crc));
361  }
362  avio_write(pb, buf + skip, size - skip);
363  end_ebml_master(pb, master);
364  } else {
365  end_ebml_master(*dyn_cp, master);
366  size = avio_close_dyn_buf(*dyn_cp, &buf);
367  avio_write(pb, buf, size);
368  }
369  av_free(buf);
370  *dyn_cp = NULL;
371 }
372 
373 /**
374 * Complete ebml master whithout destroying the buffer, allowing for later updates
375 */
378 {
379  if (pb->seekable & AVIO_SEEKABLE_NORMAL) {
380 
381  uint8_t *buf;
382  int size = avio_get_dyn_buf(*dyn_cp, &buf);
383 
384  avio_write(pb, buf, size);
385  end_ebml_master(pb, master);
386  }
387 }
388 
389 static void put_xiph_size(AVIOContext *pb, int size)
390 {
391  ffio_fill(pb, 255, size / 255);
392  avio_w8(pb, size % 255);
393 }
394 
395 /**
396  * Free the members allocated in the mux context.
397  */
398 static void mkv_free(MatroskaMuxContext *mkv) {
399  uint8_t* buf;
400  if (mkv->dyn_bc) {
401  avio_close_dyn_buf(mkv->dyn_bc, &buf);
402  av_free(buf);
403  }
404  if (mkv->info_bc) {
405  avio_close_dyn_buf(mkv->info_bc, &buf);
406  av_free(buf);
407  }
408  if (mkv->tracks_bc) {
409  avio_close_dyn_buf(mkv->tracks_bc, &buf);
410  av_free(buf);
411  }
412  if (mkv->tags_bc) {
413  avio_close_dyn_buf(mkv->tags_bc, &buf);
414  av_free(buf);
415  }
416  if (mkv->main_seekhead) {
418  av_freep(&mkv->main_seekhead);
419  }
420  if (mkv->cues) {
421  av_freep(&mkv->cues->entries);
422  av_freep(&mkv->cues);
423  }
424  if (mkv->attachments) {
425  av_freep(&mkv->attachments->entries);
426  av_freep(&mkv->attachments);
427  }
428  av_freep(&mkv->tracks);
429  av_freep(&mkv->stream_durations);
431 }
432 
433 /**
434  * Initialize a mkv_seekhead element to be ready to index level 1 Matroska
435  * elements. If a maximum number of elements is specified, enough space
436  * will be reserved at the current file location to write a seek head of
437  * that size.
438  *
439  * @param segment_offset The absolute offset to the position in the file
440  * where the segment begins.
441  * @param numelements The maximum number of elements that will be indexed
442  * by this seek head, 0 if unlimited.
443  */
444 static mkv_seekhead *mkv_start_seekhead(AVIOContext *pb, int64_t segment_offset,
445  int numelements)
446 {
447  mkv_seekhead *new_seekhead = av_mallocz(sizeof(mkv_seekhead));
448  if (!new_seekhead)
449  return NULL;
450 
451  new_seekhead->segment_offset = segment_offset;
452 
453  if (numelements > 0) {
454  new_seekhead->filepos = avio_tell(pb);
455  // 21 bytes max for a seek entry, 10 bytes max for the SeekHead ID
456  // and size, 6 bytes for a CRC32 element, and 3 bytes to guarantee
457  // that an EBML void element will fit afterwards
458  new_seekhead->reserved_size = numelements * MAX_SEEKENTRY_SIZE + 19;
459  new_seekhead->max_entries = numelements;
460  put_ebml_void(pb, new_seekhead->reserved_size);
461  }
462  return new_seekhead;
463 }
464 
465 static int mkv_add_seekhead_entry(mkv_seekhead *seekhead, unsigned int elementid, uint64_t filepos)
466 {
467  mkv_seekhead_entry *entries = seekhead->entries;
468 
469  // don't store more elements than we reserved space for
470  if (seekhead->max_entries > 0 && seekhead->max_entries <= seekhead->num_entries)
471  return -1;
472 
473  entries = av_realloc_array(entries, seekhead->num_entries + 1, sizeof(mkv_seekhead_entry));
474  if (!entries)
475  return AVERROR(ENOMEM);
476  seekhead->entries = entries;
477 
478  seekhead->entries[seekhead->num_entries].elementid = elementid;
479  seekhead->entries[seekhead->num_entries++].segmentpos = filepos - seekhead->segment_offset;
480 
481  return 0;
482 }
483 
484 /**
485  * Write the seek head to the file and free it. If a maximum number of
486  * elements was specified to mkv_start_seekhead(), the seek head will
487  * be written at the location reserved for it. Otherwise, it is written
488  * at the current location in the file.
489  *
490  * @return The file offset where the seekhead was written,
491  * -1 if an error occurred.
492  */
494 {
495  AVIOContext *dyn_cp;
496  mkv_seekhead *seekhead = mkv->main_seekhead;
497  ebml_master metaseek, seekentry;
498  int64_t currentpos;
499  int i;
500 
501  currentpos = avio_tell(pb);
502 
503  if (seekhead->reserved_size > 0) {
504  if (avio_seek(pb, seekhead->filepos, SEEK_SET) < 0) {
505  currentpos = -1;
506  goto fail;
507  }
508  }
509 
510  if (start_ebml_master_crc32(pb, &dyn_cp, mkv, &metaseek, MATROSKA_ID_SEEKHEAD,
511  seekhead->reserved_size) < 0) {
512  currentpos = -1;
513  goto fail;
514  }
515 
516  for (i = 0; i < seekhead->num_entries; i++) {
517  mkv_seekhead_entry *entry = &seekhead->entries[i];
518 
520 
522  put_ebml_num(dyn_cp, ebml_id_size(entry->elementid), 0);
523  put_ebml_id(dyn_cp, entry->elementid);
524 
526  end_ebml_master(dyn_cp, seekentry);
527  }
528  end_ebml_master_crc32(pb, &dyn_cp, mkv, metaseek);
529 
530  if (seekhead->reserved_size > 0) {
531  uint64_t remaining = seekhead->filepos + seekhead->reserved_size - avio_tell(pb);
532  put_ebml_void(pb, remaining);
533  avio_seek(pb, currentpos, SEEK_SET);
534 
535  currentpos = seekhead->filepos;
536  }
537 fail:
539  av_freep(&mkv->main_seekhead);
540 
541  return currentpos;
542 }
543 
544 static mkv_cues *mkv_start_cues(int64_t segment_offset)
545 {
546  mkv_cues *cues = av_mallocz(sizeof(mkv_cues));
547  if (!cues)
548  return NULL;
549 
550  cues->segment_offset = segment_offset;
551  return cues;
552 }
553 
554 static int mkv_add_cuepoint(mkv_cues *cues, int stream, int tracknum, int64_t ts,
555  int64_t cluster_pos, int64_t relative_pos, int64_t duration)
556 {
557  mkv_cuepoint *entries = cues->entries;
558 
559  if (ts < 0)
560  return 0;
561 
562  entries = av_realloc_array(entries, cues->num_entries + 1, sizeof(mkv_cuepoint));
563  if (!entries)
564  return AVERROR(ENOMEM);
565  cues->entries = entries;
566 
567  cues->entries[cues->num_entries].pts = ts;
568  cues->entries[cues->num_entries].stream_idx = stream;
569  cues->entries[cues->num_entries].tracknum = tracknum;
570  cues->entries[cues->num_entries].cluster_pos = cluster_pos - cues->segment_offset;
571  cues->entries[cues->num_entries].relative_pos = relative_pos;
572  cues->entries[cues->num_entries++].duration = duration;
573 
574  return 0;
575 }
576 
577 static int64_t mkv_write_cues(AVFormatContext *s, mkv_cues *cues, mkv_track *tracks, int num_tracks)
578 {
579  MatroskaMuxContext *mkv = s->priv_data;
580  AVIOContext *dyn_cp, *pb = s->pb;
581  ebml_master cues_element;
582  int64_t currentpos;
583  int i, j, ret;
584 
585  currentpos = avio_tell(pb);
586  ret = start_ebml_master_crc32(pb, &dyn_cp, mkv, &cues_element, MATROSKA_ID_CUES, 0);
587  if (ret < 0)
588  return ret;
589 
590  for (i = 0; i < cues->num_entries; i++) {
591  ebml_master cuepoint, track_positions;
592  mkv_cuepoint *entry = &cues->entries[i];
593  uint64_t pts = entry->pts;
594  int ctp_nb = 0;
595 
596  // Calculate the number of entries, so we know the element size
597  for (j = 0; j < num_tracks; j++)
598  tracks[j].has_cue = 0;
599  for (j = 0; j < cues->num_entries - i && entry[j].pts == pts; j++) {
600  int tracknum = entry[j].stream_idx;
601  av_assert0(tracknum>=0 && tracknum<num_tracks);
602  if (tracks[tracknum].has_cue && s->streams[tracknum]->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE)
603  continue;
604  tracks[tracknum].has_cue = 1;
605  ctp_nb ++;
606  }
607 
608  cuepoint = start_ebml_master(dyn_cp, MATROSKA_ID_POINTENTRY, MAX_CUEPOINT_SIZE(ctp_nb));
609  put_ebml_uint(dyn_cp, MATROSKA_ID_CUETIME, pts);
610 
611  // put all the entries from different tracks that have the exact same
612  // timestamp into the same CuePoint
613  for (j = 0; j < num_tracks; j++)
614  tracks[j].has_cue = 0;
615  for (j = 0; j < cues->num_entries - i && entry[j].pts == pts; j++) {
616  int tracknum = entry[j].stream_idx;
617  av_assert0(tracknum>=0 && tracknum<num_tracks);
618  if (tracks[tracknum].has_cue && s->streams[tracknum]->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE)
619  continue;
620  tracks[tracknum].has_cue = 1;
622  put_ebml_uint(dyn_cp, MATROSKA_ID_CUETRACK , entry[j].tracknum );
623  put_ebml_uint(dyn_cp, MATROSKA_ID_CUECLUSTERPOSITION , entry[j].cluster_pos);
624  put_ebml_uint(dyn_cp, MATROSKA_ID_CUERELATIVEPOSITION, entry[j].relative_pos);
625  if (entry[j].duration != -1)
626  put_ebml_uint(dyn_cp, MATROSKA_ID_CUEDURATION , entry[j].duration);
627  end_ebml_master(dyn_cp, track_positions);
628  }
629  i += j - 1;
630  end_ebml_master(dyn_cp, cuepoint);
631  }
632  end_ebml_master_crc32(pb, &dyn_cp, mkv, cues_element);
633 
634  return currentpos;
635 }
636 
638 {
639  const uint8_t *header_start[3];
640  int header_len[3];
641  int first_header_size;
642  int j;
643 
644  if (par->codec_id == AV_CODEC_ID_VORBIS)
645  first_header_size = 30;
646  else
647  first_header_size = 42;
648 
650  first_header_size, header_start, header_len) < 0) {
651  av_log(s, AV_LOG_ERROR, "Extradata corrupt.\n");
652  return -1;
653  }
654 
655  avio_w8(pb, 2); // number packets - 1
656  for (j = 0; j < 2; j++) {
657  put_xiph_size(pb, header_len[j]);
658  }
659  for (j = 0; j < 3; j++)
660  avio_write(pb, header_start[j], header_len[j]);
661 
662  return 0;
663 }
664 
666 {
667  if (par->extradata && par->extradata_size == 2)
668  avio_write(pb, par->extradata, 2);
669  else
670  avio_wl16(pb, 0x403); // fallback to the version mentioned in matroska specs
671  return 0;
672 }
673 
675  AVIOContext *pb, AVCodecParameters *par)
676 {
677  int write_comment = (par->channel_layout &&
678  !(par->channel_layout & ~0x3ffffULL) &&
680  int ret = ff_flac_write_header(pb, par->extradata, par->extradata_size,
681  !write_comment);
682 
683  if (ret < 0)
684  return ret;
685 
686  if (write_comment) {
687  const char *vendor = (s->flags & AVFMT_FLAG_BITEXACT) ?
688  "Lavf" : LIBAVFORMAT_IDENT;
689  AVDictionary *dict = NULL;
690  uint8_t buf[32], *data, *p;
691  int64_t len;
692 
693  snprintf(buf, sizeof(buf), "0x%"PRIx64, par->channel_layout);
694  av_dict_set(&dict, "WAVEFORMATEXTENSIBLE_CHANNEL_MASK", buf, 0);
695 
696  len = ff_vorbiscomment_length(dict, vendor);
697  if (len >= ((1<<24) - 4))
698  return AVERROR(EINVAL);
699 
700  data = av_malloc(len + 4);
701  if (!data) {
702  av_dict_free(&dict);
703  return AVERROR(ENOMEM);
704  }
705 
706  data[0] = 0x84;
707  AV_WB24(data + 1, len);
708 
709  p = data + 4;
710  ff_vorbiscomment_write(&p, &dict, vendor);
711 
712  avio_write(pb, data, len + 4);
713 
714  av_freep(&data);
715  av_dict_free(&dict);
716  }
717 
718  return 0;
719 }
720 
721 static int get_aac_sample_rates(AVFormatContext *s, uint8_t *extradata, int extradata_size,
722  int *sample_rate, int *output_sample_rate)
723 {
724  MPEG4AudioConfig mp4ac;
725  int ret;
726 
727  ret = avpriv_mpeg4audio_get_config(&mp4ac, extradata,
728  extradata_size * 8, 1);
729  /* Don't abort if the failure is because of missing extradata. Assume in that
730  * case a bitstream filter will provide the muxer with the extradata in the
731  * first packet.
732  * Abort however if s->pb is not seekable, as we would not be able to seek back
733  * to write the sample rate elements once the extradata shows up, anyway. */
734  if (ret < 0 && (extradata_size || !(s->pb->seekable & AVIO_SEEKABLE_NORMAL))) {
735  av_log(s, AV_LOG_ERROR,
736  "Error parsing AAC extradata, unable to determine samplerate.\n");
737  return AVERROR(EINVAL);
738  }
739 
740  if (ret < 0) {
741  /* This will only happen when this function is called while writing the
742  * header and no extradata is available. The space for this element has
743  * to be reserved for when this function is called again after the
744  * extradata shows up in the first packet, as there's no way to know if
745  * output_sample_rate will be different than sample_rate or not. */
746  *output_sample_rate = *sample_rate;
747  } else {
748  *sample_rate = mp4ac.sample_rate;
749  *output_sample_rate = mp4ac.ext_sample_rate;
750  }
751  return 0;
752 }
753 
755  AVCodecParameters *par,
756  AVIOContext *dyn_cp)
757 {
758  switch (par->codec_id) {
759  case AV_CODEC_ID_VORBIS:
760  case AV_CODEC_ID_THEORA:
761  return put_xiph_codecpriv(s, dyn_cp, par);
762  case AV_CODEC_ID_FLAC:
763  return put_flac_codecpriv(s, dyn_cp, par);
764  case AV_CODEC_ID_WAVPACK:
765  return put_wv_codecpriv(dyn_cp, par);
766  case AV_CODEC_ID_H264:
767  return ff_isom_write_avcc(dyn_cp, par->extradata,
768  par->extradata_size);
769  case AV_CODEC_ID_HEVC:
770  ff_isom_write_hvcc(dyn_cp, par->extradata,
771  par->extradata_size, 0);
772  return 0;
773  case AV_CODEC_ID_AV1:
774  if (par->extradata_size)
775  return ff_isom_write_av1c(dyn_cp, par->extradata,
776  par->extradata_size);
777  else
778  put_ebml_void(pb, 4 + 3);
779  break;
780  case AV_CODEC_ID_ALAC:
781  if (par->extradata_size < 36) {
782  av_log(s, AV_LOG_ERROR,
783  "Invalid extradata found, ALAC expects a 36-byte "
784  "QuickTime atom.");
785  return AVERROR_INVALIDDATA;
786  } else
787  avio_write(dyn_cp, par->extradata + 12,
788  par->extradata_size - 12);
789  break;
790  case AV_CODEC_ID_AAC:
791  if (par->extradata_size)
792  avio_write(dyn_cp, par->extradata, par->extradata_size);
793  else
794  put_ebml_void(pb, MAX_PCE_SIZE + 2 + 4);
795  break;
796  default:
797  if (par->codec_id == AV_CODEC_ID_PRORES &&
799  avio_wl32(dyn_cp, par->codec_tag);
800  } else if (par->extradata_size && par->codec_id != AV_CODEC_ID_TTA)
801  avio_write(dyn_cp, par->extradata, par->extradata_size);
802  }
803 
804  return 0;
805 }
806 
808  AVCodecParameters *par,
809  int native_id, int qt_id)
810 {
811  AVIOContext *dyn_cp;
812  uint8_t *codecpriv;
813  int ret, codecpriv_size;
814 
815  ret = avio_open_dyn_buf(&dyn_cp);
816  if (ret < 0)
817  return ret;
818 
819  if (native_id) {
820  ret = mkv_write_native_codecprivate(s, pb, par, dyn_cp);
821  } else if (par->codec_type == AVMEDIA_TYPE_VIDEO) {
822  if (qt_id) {
823  if (!par->codec_tag)
825  par->codec_id);
828  ) {
829  int i;
830  avio_wb32(dyn_cp, 0x5a + par->extradata_size);
831  avio_wl32(dyn_cp, par->codec_tag);
832  for(i = 0; i < 0x5a - 8; i++)
833  avio_w8(dyn_cp, 0);
834  }
835  avio_write(dyn_cp, par->extradata, par->extradata_size);
836  } else {
838  av_log(s, AV_LOG_WARNING, "codec %s is not supported by this format\n",
839  avcodec_get_name(par->codec_id));
840 
841  if (!par->codec_tag)
843  par->codec_id);
844  if (!par->codec_tag && par->codec_id != AV_CODEC_ID_RAWVIDEO) {
845  av_log(s, AV_LOG_ERROR, "No bmp codec tag found for codec %s\n",
846  avcodec_get_name(par->codec_id));
847  ret = AVERROR(EINVAL);
848  }
849 
850  ff_put_bmp_header(dyn_cp, par, 0, 0);
851  }
852  } else if (par->codec_type == AVMEDIA_TYPE_AUDIO) {
853  unsigned int tag;
855  if (!tag) {
856  av_log(s, AV_LOG_ERROR, "No wav codec tag found for codec %s\n",
857  avcodec_get_name(par->codec_id));
858  ret = AVERROR(EINVAL);
859  }
860  if (!par->codec_tag)
861  par->codec_tag = tag;
862 
864  }
865 
866  codecpriv_size = avio_close_dyn_buf(dyn_cp, &codecpriv);
867  if (codecpriv_size)
869  codecpriv_size);
870  av_free(codecpriv);
871  return ret;
872 }
873 
875  AVIOContext *dyn_cp;
876  uint8_t *colorinfo_ptr;
877  int side_data_size = 0;
878  int ret, colorinfo_size;
879  const uint8_t *side_data;
880 
881  ret = avio_open_dyn_buf(&dyn_cp);
882  if (ret < 0)
883  return ret;
884 
885  if (par->color_trc != AVCOL_TRC_UNSPECIFIED &&
886  par->color_trc < AVCOL_TRC_NB) {
888  par->color_trc);
889  }
890  if (par->color_space != AVCOL_SPC_UNSPECIFIED &&
891  par->color_space < AVCOL_SPC_NB) {
893  }
895  par->color_primaries < AVCOL_PRI_NB) {
897  }
898  if (par->color_range != AVCOL_RANGE_UNSPECIFIED &&
899  par->color_range < AVCOL_RANGE_NB) {
901  }
904  int xpos, ypos;
905 
906  avcodec_enum_to_chroma_pos(&xpos, &ypos, par->chroma_location);
907  put_ebml_uint(dyn_cp, MATROSKA_ID_VIDEOCOLORCHROMASITINGHORZ, (xpos >> 7) + 1);
908  put_ebml_uint(dyn_cp, MATROSKA_ID_VIDEOCOLORCHROMASITINGVERT, (ypos >> 7) + 1);
909  }
910 
912  &side_data_size);
913  if (side_data_size) {
914  const AVContentLightMetadata *metadata =
915  (const AVContentLightMetadata*)side_data;
918  }
919 
921  &side_data_size);
922  if (side_data_size == sizeof(AVMasteringDisplayMetadata)) {
923  ebml_master meta_element = start_ebml_master(
925  const AVMasteringDisplayMetadata *metadata =
926  (const AVMasteringDisplayMetadata*)side_data;
927  if (metadata->has_primaries) {
929  av_q2d(metadata->display_primaries[0][0]));
931  av_q2d(metadata->display_primaries[0][1]));
933  av_q2d(metadata->display_primaries[1][0]));
935  av_q2d(metadata->display_primaries[1][1]));
937  av_q2d(metadata->display_primaries[2][0]));
939  av_q2d(metadata->display_primaries[2][1]));
941  av_q2d(metadata->white_point[0]));
943  av_q2d(metadata->white_point[1]));
944  }
945  if (metadata->has_luminance) {
947  av_q2d(metadata->max_luminance));
949  av_q2d(metadata->min_luminance));
950  }
951  end_ebml_master(dyn_cp, meta_element);
952  }
953 
954  colorinfo_size = avio_close_dyn_buf(dyn_cp, &colorinfo_ptr);
955  if (colorinfo_size) {
956  ebml_master colorinfo = start_ebml_master(pb, MATROSKA_ID_VIDEOCOLOR, colorinfo_size);
957  avio_write(pb, colorinfo_ptr, colorinfo_size);
958  end_ebml_master(pb, colorinfo);
959  }
960  av_free(colorinfo_ptr);
961  return 0;
962 }
963 
965  AVStream *st)
966 {
967  AVIOContext b;
968  AVIOContext *dyn_cp;
969  int side_data_size = 0;
970  int ret, projection_size;
971  uint8_t *projection_ptr;
972  uint8_t private[20];
973 
974  const AVSphericalMapping *spherical =
976  &side_data_size);
977 
978  if (!side_data_size)
979  return 0;
980 
981  ret = avio_open_dyn_buf(&dyn_cp);
982  if (ret < 0)
983  return ret;
984 
985  switch (spherical->projection) {
989  break;
991  ffio_init_context(&b, private, 20, 1, NULL, NULL, NULL, NULL);
994  avio_wb32(&b, 0); // version + flags
995  avio_wb32(&b, spherical->bound_top);
996  avio_wb32(&b, spherical->bound_bottom);
997  avio_wb32(&b, spherical->bound_left);
998  avio_wb32(&b, spherical->bound_right);
1000  private, avio_tell(&b));
1001  break;
1002  case AV_SPHERICAL_CUBEMAP:
1003  ffio_init_context(&b, private, 12, 1, NULL, NULL, NULL, NULL);
1006  avio_wb32(&b, 0); // version + flags
1007  avio_wb32(&b, 0); // layout
1008  avio_wb32(&b, spherical->padding);
1010  private, avio_tell(&b));
1011  break;
1012  default:
1013  av_log(s, AV_LOG_WARNING, "Unknown projection type\n");
1014  goto end;
1015  }
1016 
1017  if (spherical->yaw)
1019  (double) spherical->yaw / (1 << 16));
1020  if (spherical->pitch)
1022  (double) spherical->pitch / (1 << 16));
1023  if (spherical->roll)
1025  (double) spherical->roll / (1 << 16));
1026 
1027 end:
1028  projection_size = avio_close_dyn_buf(dyn_cp, &projection_ptr);
1029  if (projection_size) {
1030  ebml_master projection = start_ebml_master(pb,
1032  projection_size);
1033  avio_write(pb, projection_ptr, projection_size);
1034  end_ebml_master(pb, projection);
1035  }
1036  av_freep(&projection_ptr);
1037 
1038  return 0;
1039 }
1040 
1042  enum AVFieldOrder field_order)
1043 {
1044  switch (field_order) {
1045  case AV_FIELD_UNKNOWN:
1046  break;
1047  case AV_FIELD_PROGRESSIVE:
1050  break;
1051  case AV_FIELD_TT:
1052  case AV_FIELD_BB:
1053  case AV_FIELD_TB:
1054  case AV_FIELD_BT:
1057  if (mode != MODE_WEBM) {
1058  switch (field_order) {
1059  case AV_FIELD_TT:
1062  break;
1063  case AV_FIELD_BB:
1066  break;
1067  case AV_FIELD_TB:
1070  break;
1071  case AV_FIELD_BT:
1074  break;
1075  }
1076  }
1077  }
1078 }
1079 
1081  AVStream *st, int mode, int *h_width, int *h_height)
1082 {
1083  int i;
1084  int ret = 0;
1087 
1088  *h_width = 1;
1089  *h_height = 1;
1090  // convert metadata into proper side data and add it to the stream
1091  if ((tag = av_dict_get(st->metadata, "stereo_mode", NULL, 0)) ||
1092  (tag = av_dict_get( s->metadata, "stereo_mode", NULL, 0))) {
1093  int stereo_mode = atoi(tag->value);
1094 
1095  for (i=0; i<MATROSKA_VIDEO_STEREOMODE_TYPE_NB; i++)
1096  if (!strcmp(tag->value, ff_matroska_video_stereo_mode[i])){
1097  stereo_mode = i;
1098  break;
1099  }
1100 
1101  if (stereo_mode < MATROSKA_VIDEO_STEREOMODE_TYPE_NB &&
1102  stereo_mode != 10 && stereo_mode != 12) {
1103  int ret = ff_mkv_stereo3d_conv(st, stereo_mode);
1104  if (ret < 0)
1105  return ret;
1106  }
1107  }
1108 
1109  // iterate to find the stereo3d side data
1110  for (i = 0; i < st->nb_side_data; i++) {
1111  AVPacketSideData sd = st->side_data[i];
1112  if (sd.type == AV_PKT_DATA_STEREO3D) {
1113  AVStereo3D *stereo = (AVStereo3D *)sd.data;
1114 
1115  switch (stereo->type) {
1116  case AV_STEREO3D_2D:
1118  break;
1120  format = (stereo->flags & AV_STEREO3D_FLAG_INVERT)
1123  *h_width = 2;
1124  break;
1125  case AV_STEREO3D_TOPBOTTOM:
1127  if (stereo->flags & AV_STEREO3D_FLAG_INVERT)
1128  format--;
1129  *h_height = 2;
1130  break;
1133  if (stereo->flags & AV_STEREO3D_FLAG_INVERT)
1134  format--;
1135  break;
1136  case AV_STEREO3D_LINES:
1138  if (stereo->flags & AV_STEREO3D_FLAG_INVERT)
1139  format--;
1140  *h_height = 2;
1141  break;
1142  case AV_STEREO3D_COLUMNS:
1144  if (stereo->flags & AV_STEREO3D_FLAG_INVERT)
1145  format--;
1146  *h_width = 2;
1147  break;
1150  if (stereo->flags & AV_STEREO3D_FLAG_INVERT)
1151  format++;
1152  break;
1153  }
1154  break;
1155  }
1156  }
1157 
1158  if (format == MATROSKA_VIDEO_STEREOMODE_TYPE_NB)
1159  return ret;
1160 
1161  // if webm, do not write unsupported modes
1162  if ((mode == MODE_WEBM &&
1165  || format >= MATROSKA_VIDEO_STEREOMODE_TYPE_NB) {
1166  av_log(s, AV_LOG_ERROR,
1167  "The specified stereo mode is not valid.\n");
1169  return AVERROR(EINVAL);
1170  }
1171 
1172  // write StereoMode if format is valid
1174 
1175  return ret;
1176 }
1177 
1179  int i, AVIOContext *pb, int default_stream_exists)
1180 {
1181  AVStream *st = s->streams[i];
1182  AVCodecParameters *par = st->codecpar;
1183  ebml_master subinfo, track;
1184  int native_id = 0;
1185  int qt_id = 0;
1187  int sample_rate = par->sample_rate;
1188  int output_sample_rate = 0;
1189  int display_width_div = 1;
1190  int display_height_div = 1;
1191  int j, ret;
1193 
1194  if (par->codec_type == AVMEDIA_TYPE_ATTACHMENT) {
1195  mkv->have_attachments = 1;
1196  return 0;
1197  }
1198 
1199  if (par->codec_type == AVMEDIA_TYPE_AUDIO) {
1200  if (!bit_depth && par->codec_id != AV_CODEC_ID_ADPCM_G726) {
1201  if (par->bits_per_raw_sample)
1202  bit_depth = par->bits_per_raw_sample;
1203  else
1204  bit_depth = av_get_bytes_per_sample(par->format) << 3;
1205  }
1206  if (!bit_depth)
1207  bit_depth = par->bits_per_coded_sample;
1208  }
1209 
1210  if (par->codec_id == AV_CODEC_ID_AAC) {
1211  ret = get_aac_sample_rates(s, par->extradata, par->extradata_size, &sample_rate,
1212  &output_sample_rate);
1213  if (ret < 0)
1214  return ret;
1215  }
1216 
1217  track = start_ebml_master(pb, MATROSKA_ID_TRACKENTRY, 0);
1219  mkv->is_dash ? mkv->dash_track_number : i + 1);
1221  mkv->is_dash ? mkv->dash_track_number : i + 1);
1222  put_ebml_uint (pb, MATROSKA_ID_TRACKFLAGLACING , 0); // no lacing (yet)
1223 
1224  if ((tag = av_dict_get(st->metadata, "title", NULL, 0)))
1226  tag = av_dict_get(st->metadata, "language", NULL, 0);
1227  if (mkv->mode != MODE_WEBM || par->codec_id != AV_CODEC_ID_WEBVTT) {
1228  put_ebml_string(pb, MATROSKA_ID_TRACKLANGUAGE, tag && tag->value ? tag->value:"und");
1229  } else if (tag && tag->value) {
1231  }
1232 
1233  // The default value for TRACKFLAGDEFAULT is 1, so add element
1234  // if we need to clear it.
1235  if (default_stream_exists && !(st->disposition & AV_DISPOSITION_DEFAULT))
1237 
1240 
1241  if (mkv->mode == MODE_WEBM && par->codec_id == AV_CODEC_ID_WEBVTT) {
1242  const char *codec_id;
1244  codec_id = "D_WEBVTT/CAPTIONS";
1245  native_id = MATROSKA_TRACK_TYPE_SUBTITLE;
1246  } else if (st->disposition & AV_DISPOSITION_DESCRIPTIONS) {
1247  codec_id = "D_WEBVTT/DESCRIPTIONS";
1248  native_id = MATROSKA_TRACK_TYPE_METADATA;
1249  } else if (st->disposition & AV_DISPOSITION_METADATA) {
1250  codec_id = "D_WEBVTT/METADATA";
1251  native_id = MATROSKA_TRACK_TYPE_METADATA;
1252  } else {
1253  codec_id = "D_WEBVTT/SUBTITLES";
1254  native_id = MATROSKA_TRACK_TYPE_SUBTITLE;
1255  }
1256  put_ebml_string(pb, MATROSKA_ID_CODECID, codec_id);
1257  } else {
1258  // look for a codec ID string specific to mkv to use,
1259  // if none are found, use AVI codes
1260  if (par->codec_id != AV_CODEC_ID_RAWVIDEO || par->codec_tag) {
1261  for (j = 0; ff_mkv_codec_tags[j].id != AV_CODEC_ID_NONE; j++) {
1262  if (ff_mkv_codec_tags[j].id == par->codec_id && par->codec_id != AV_CODEC_ID_FFV1) {
1264  native_id = 1;
1265  break;
1266  }
1267  }
1268  } else {
1269  if (mkv->allow_raw_vfw) {
1270  native_id = 0;
1271  } else {
1272  av_log(s, AV_LOG_ERROR, "Raw RGB is not supported Natively in Matroska, you can use AVI or NUT or\n"
1273  "If you would like to store it anyway using VFW mode, enable allow_raw_vfw (-allow_raw_vfw 1)\n");
1274  return AVERROR(EINVAL);
1275  }
1276  }
1277  }
1278 
1279  if (par->codec_type == AVMEDIA_TYPE_AUDIO && par->initial_padding && par->codec_id == AV_CODEC_ID_OPUS) {
1280  int64_t codecdelay = av_rescale_q(par->initial_padding,
1281  (AVRational){ 1, 48000 },
1282  (AVRational){ 1, 1000000000 });
1283  if (codecdelay < 0) {
1284  av_log(s, AV_LOG_ERROR, "Initial padding is invalid\n");
1285  return AVERROR(EINVAL);
1286  }
1287 // mkv->tracks[i].ts_offset = av_rescale_q(par->initial_padding,
1288 // (AVRational){ 1, par->sample_rate },
1289 // st->time_base);
1290 
1291  put_ebml_uint(pb, MATROSKA_ID_CODECDELAY, codecdelay);
1292  }
1293  if (par->codec_id == AV_CODEC_ID_OPUS) {
1295  }
1296 
1297  if (mkv->mode == MODE_WEBM && !(par->codec_id == AV_CODEC_ID_VP8 ||
1298  par->codec_id == AV_CODEC_ID_VP9 ||
1299  par->codec_id == AV_CODEC_ID_OPUS ||
1300  par->codec_id == AV_CODEC_ID_VORBIS ||
1301  par->codec_id == AV_CODEC_ID_WEBVTT)) {
1303  "Only VP8 or VP9 video and Vorbis or Opus audio and WebVTT subtitles are supported for WebM.\n");
1304  return AVERROR(EINVAL);
1305  }
1306 
1307  switch (par->codec_type) {
1308  case AVMEDIA_TYPE_VIDEO:
1309  mkv->have_video = 1;
1311 
1312  if( st->avg_frame_rate.num > 0 && st->avg_frame_rate.den > 0
1313  && av_cmp_q(av_inv_q(st->avg_frame_rate), st->time_base) > 0)
1314  put_ebml_uint(pb, MATROSKA_ID_TRACKDEFAULTDURATION, 1000000000LL * st->avg_frame_rate.den / st->avg_frame_rate.num);
1315 
1316  if (!native_id &&
1317  ff_codec_get_tag(ff_codec_movvideo_tags, par->codec_id) &&
1318  ((!ff_codec_get_tag(ff_codec_bmp_tags, par->codec_id) && par->codec_id != AV_CODEC_ID_RAWVIDEO) ||
1319  par->codec_id == AV_CODEC_ID_SVQ1 ||
1320  par->codec_id == AV_CODEC_ID_SVQ3 ||
1321  par->codec_id == AV_CODEC_ID_CINEPAK))
1322  qt_id = 1;
1323 
1324  if (qt_id)
1325  put_ebml_string(pb, MATROSKA_ID_CODECID, "V_QUICKTIME");
1326  else if (!native_id) {
1327  // if there is no mkv-specific codec ID, use VFW mode
1328  put_ebml_string(pb, MATROSKA_ID_CODECID, "V_MS/VFW/FOURCC");
1329  mkv->tracks[i].write_dts = 1;
1330  s->internal->avoid_negative_ts_use_pts = 0;
1331  }
1332 
1333  subinfo = start_ebml_master(pb, MATROSKA_ID_TRACKVIDEO, 0);
1334 
1335  put_ebml_uint (pb, MATROSKA_ID_VIDEOPIXELWIDTH , par->width);
1336  put_ebml_uint (pb, MATROSKA_ID_VIDEOPIXELHEIGHT, par->height);
1337 
1338  mkv_write_field_order(pb, mkv->mode, par->field_order);
1339 
1340  // check both side data and metadata for stereo information,
1341  // write the result to the bitstream if any is found
1342  ret = mkv_write_stereo_mode(s, pb, st, mkv->mode,
1343  &display_width_div,
1344  &display_height_div);
1345  if (ret < 0)
1346  return ret;
1347 
1348  if (((tag = av_dict_get(st->metadata, "alpha_mode", NULL, 0)) && atoi(tag->value)) ||
1349  ((tag = av_dict_get( s->metadata, "alpha_mode", NULL, 0)) && atoi(tag->value)) ||
1350  (par->format == AV_PIX_FMT_YUVA420P)) {
1352  }
1353 
1354  // write DisplayWidth and DisplayHeight, they contain the size of
1355  // a single source view and/or the display aspect ratio
1356  if (st->sample_aspect_ratio.num) {
1357  int64_t d_width = av_rescale(par->width, st->sample_aspect_ratio.num, st->sample_aspect_ratio.den);
1358  if (d_width > INT_MAX) {
1359  av_log(s, AV_LOG_ERROR, "Overflow in display width\n");
1360  return AVERROR(EINVAL);
1361  }
1362  if (d_width != par->width || display_width_div != 1 || display_height_div != 1) {
1363  if (mkv->mode == MODE_WEBM || display_width_div != 1 || display_height_div != 1) {
1364  put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYWIDTH , d_width / display_width_div);
1365  put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYHEIGHT, par->height / display_height_div);
1366  } else {
1367  AVRational display_aspect_ratio;
1368  av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
1369  par->width * (int64_t)st->sample_aspect_ratio.num,
1370  par->height * (int64_t)st->sample_aspect_ratio.den,
1371  1024 * 1024);
1372  put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYWIDTH, display_aspect_ratio.num);
1373  put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYHEIGHT, display_aspect_ratio.den);
1375  }
1376  }
1377  } else if (display_width_div != 1 || display_height_div != 1) {
1378  put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYWIDTH , par->width / display_width_div);
1379  put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYHEIGHT, par->height / display_height_div);
1380  } else if (mkv->mode != MODE_WEBM)
1382 
1383  if (par->codec_id == AV_CODEC_ID_RAWVIDEO) {
1384  uint32_t color_space = av_le2ne32(par->codec_tag);
1385  put_ebml_binary(pb, MATROSKA_ID_VIDEOCOLORSPACE, &color_space, sizeof(color_space));
1386  }
1387  ret = mkv_write_video_color(pb, par, st);
1388  if (ret < 0)
1389  return ret;
1390  ret = mkv_write_video_projection(s, pb, st);
1391  if (ret < 0)
1392  return ret;
1393  end_ebml_master(pb, subinfo);
1394  break;
1395 
1396  case AVMEDIA_TYPE_AUDIO:
1398 
1399  if (!native_id)
1400  // no mkv-specific ID, use ACM mode
1401  put_ebml_string(pb, MATROSKA_ID_CODECID, "A_MS/ACM");
1402 
1403  subinfo = start_ebml_master(pb, MATROSKA_ID_TRACKAUDIO, 0);
1404  put_ebml_uint (pb, MATROSKA_ID_AUDIOCHANNELS , par->channels);
1405 
1406  mkv->tracks[i].sample_rate_offset = avio_tell(pb);
1408  if (output_sample_rate)
1409  put_ebml_float(pb, MATROSKA_ID_AUDIOOUTSAMPLINGFREQ, output_sample_rate);
1410  if (bit_depth)
1412  end_ebml_master(pb, subinfo);
1413  break;
1414 
1415  case AVMEDIA_TYPE_SUBTITLE:
1416  if (!native_id) {
1417  av_log(s, AV_LOG_ERROR, "Subtitle codec %d is not supported.\n", par->codec_id);
1418  return AVERROR(ENOSYS);
1419  }
1420 
1421  if (mkv->mode != MODE_WEBM || par->codec_id != AV_CODEC_ID_WEBVTT)
1422  native_id = MATROSKA_TRACK_TYPE_SUBTITLE;
1423 
1424  put_ebml_uint(pb, MATROSKA_ID_TRACKTYPE, native_id);
1425  break;
1426  default:
1427  av_log(s, AV_LOG_ERROR, "Only audio, video, and subtitles are supported for Matroska.\n");
1428  return AVERROR(EINVAL);
1429  }
1430 
1431  if (mkv->mode != MODE_WEBM || par->codec_id != AV_CODEC_ID_WEBVTT) {
1432  mkv->tracks[i].codecpriv_offset = avio_tell(pb);
1433  ret = mkv_write_codecprivate(s, pb, par, native_id, qt_id);
1434  if (ret < 0)
1435  return ret;
1436  }
1437 
1438  end_ebml_master(pb, track);
1439 
1440  return 0;
1441 }
1442 
1444 {
1445  MatroskaMuxContext *mkv = s->priv_data;
1446  AVIOContext *pb = s->pb;
1447  int i, ret, default_stream_exists = 0;
1448 
1450  if (ret < 0)
1451  return ret;
1452 
1453  ret = start_ebml_master_crc32(pb, &mkv->tracks_bc, mkv, &mkv->tracks_master, MATROSKA_ID_TRACKS, 0);
1454  if (ret < 0)
1455  return ret;
1456 
1457  for (i = 0; i < s->nb_streams; i++) {
1458  AVStream *st = s->streams[i];
1459  default_stream_exists |= st->disposition & AV_DISPOSITION_DEFAULT;
1460  }
1461  for (i = 0; i < s->nb_streams; i++) {
1462  ret = mkv_write_track(s, mkv, i, mkv->tracks_bc, default_stream_exists);
1463  if (ret < 0)
1464  return ret;
1465  }
1466 
1467  if ((pb->seekable & AVIO_SEEKABLE_NORMAL) && !mkv->is_live)
1469  else
1470  end_ebml_master_crc32(pb, &mkv->tracks_bc, mkv, mkv->tracks_master);
1471 
1472  return 0;
1473 }
1474 
1476 {
1477  MatroskaMuxContext *mkv = s->priv_data;
1478  AVIOContext *dyn_cp, *pb = s->pb;
1479  ebml_master chapters, editionentry;
1480  AVRational scale = {1, 1E9};
1481  int i, ret;
1482 
1483  if (!s->nb_chapters || mkv->wrote_chapters)
1484  return 0;
1485 
1487  if (ret < 0) return ret;
1488 
1489  ret = start_ebml_master_crc32(pb, &dyn_cp, mkv, &chapters, MATROSKA_ID_CHAPTERS, 0);
1490  if (ret < 0) return ret;
1491 
1492  editionentry = start_ebml_master(dyn_cp, MATROSKA_ID_EDITIONENTRY, 0);
1493  if (mkv->mode != MODE_WEBM) {
1496  }
1497  for (i = 0; i < s->nb_chapters; i++) {
1498  ebml_master chapteratom, chapterdisplay;
1499  AVChapter *c = s->chapters[i];
1500  int64_t chapterstart = av_rescale_q(c->start, c->time_base, scale);
1501  int64_t chapterend = av_rescale_q(c->end, c->time_base, scale);
1502  AVDictionaryEntry *t = NULL;
1503  if (chapterstart < 0 || chapterstart > chapterend || chapterend < 0) {
1504  av_log(s, AV_LOG_ERROR,
1505  "Invalid chapter start (%"PRId64") or end (%"PRId64").\n",
1506  chapterstart, chapterend);
1507  return AVERROR_INVALIDDATA;
1508  }
1509 
1510  chapteratom = start_ebml_master(dyn_cp, MATROSKA_ID_CHAPTERATOM, 0);
1512  put_ebml_uint(dyn_cp, MATROSKA_ID_CHAPTERTIMESTART, chapterstart);
1513  put_ebml_uint(dyn_cp, MATROSKA_ID_CHAPTERTIMEEND, chapterend);
1514  if (mkv->mode != MODE_WEBM) {
1517  }
1518  if ((t = av_dict_get(c->metadata, "title", NULL, 0))) {
1519  chapterdisplay = start_ebml_master(dyn_cp, MATROSKA_ID_CHAPTERDISPLAY, 0);
1521  put_ebml_string(dyn_cp, MATROSKA_ID_CHAPLANG , "und");
1522  end_ebml_master(dyn_cp, chapterdisplay);
1523  }
1524  end_ebml_master(dyn_cp, chapteratom);
1525  }
1526  end_ebml_master(dyn_cp, editionentry);
1527  end_ebml_master_crc32(pb, &dyn_cp, mkv, chapters);
1528 
1529  mkv->wrote_chapters = 1;
1530  return 0;
1531 }
1532 
1534 {
1535  uint8_t *key = av_strdup(t->key);
1536  uint8_t *p = key;
1537  const uint8_t *lang = NULL;
1538  ebml_master tag;
1539 
1540  if (!key)
1541  return AVERROR(ENOMEM);
1542 
1543  if ((p = strrchr(p, '-')) &&
1544  (lang = ff_convert_lang_to(p + 1, AV_LANG_ISO639_2_BIBL)))
1545  *p = 0;
1546 
1547  p = key;
1548  while (*p) {
1549  if (*p == ' ')
1550  *p = '_';
1551  else if (*p >= 'a' && *p <= 'z')
1552  *p -= 'a' - 'A';
1553  p++;
1554  }
1555 
1558  if (lang)
1561  end_ebml_master(pb, tag);
1562 
1563  av_freep(&key);
1564  return 0;
1565 }
1566 
1568  unsigned int elementid, unsigned int uid,
1569  ebml_master *tags, ebml_master* tag)
1570 {
1571  AVIOContext *pb;
1572  MatroskaMuxContext *mkv = s->priv_data;
1573  ebml_master targets;
1574  int ret;
1575 
1576  if (!tags->pos) {
1578  if (ret < 0) return ret;
1579 
1580  start_ebml_master_crc32(s->pb, &mkv->tags_bc, mkv, tags, MATROSKA_ID_TAGS, 0);
1581  }
1582  pb = mkv->tags_bc;
1583 
1584  *tag = start_ebml_master(pb, MATROSKA_ID_TAG, 0);
1585  targets = start_ebml_master(pb, MATROSKA_ID_TAGTARGETS, 0);
1586  if (elementid)
1587  put_ebml_uint(pb, elementid, uid);
1588  end_ebml_master(pb, targets);
1589  return 0;
1590 }
1591 
1592 static int mkv_check_tag_name(const char *name, unsigned int elementid)
1593 {
1594  return av_strcasecmp(name, "title") &&
1595  av_strcasecmp(name, "stereo_mode") &&
1596  av_strcasecmp(name, "creation_time") &&
1597  av_strcasecmp(name, "encoding_tool") &&
1598  av_strcasecmp(name, "duration") &&
1599  (elementid != MATROSKA_ID_TAGTARGETS_TRACKUID ||
1600  av_strcasecmp(name, "language")) &&
1601  (elementid != MATROSKA_ID_TAGTARGETS_ATTACHUID ||
1602  (av_strcasecmp(name, "filename") &&
1603  av_strcasecmp(name, "mimetype")));
1604 }
1605 
1606 static int mkv_write_tag(AVFormatContext *s, AVDictionary *m, unsigned int elementid,
1607  unsigned int uid, ebml_master *tags)
1608 {
1609  MatroskaMuxContext *mkv = s->priv_data;
1610  ebml_master tag;
1611  int ret;
1612  AVDictionaryEntry *t = NULL;
1613 
1614  ret = mkv_write_tag_targets(s, elementid, uid, tags, &tag);
1615  if (ret < 0)
1616  return ret;
1617 
1618  while ((t = av_dict_get(m, "", t, AV_DICT_IGNORE_SUFFIX))) {
1619  if (mkv_check_tag_name(t->key, elementid)) {
1620  ret = mkv_write_simpletag(mkv->tags_bc, t);
1621  if (ret < 0)
1622  return ret;
1623  }
1624  }
1625 
1626  end_ebml_master(mkv->tags_bc, tag);
1627  return 0;
1628 }
1629 
1630 static int mkv_check_tag(AVDictionary *m, unsigned int elementid)
1631 {
1632  AVDictionaryEntry *t = NULL;
1633 
1634  while ((t = av_dict_get(m, "", t, AV_DICT_IGNORE_SUFFIX)))
1635  if (mkv_check_tag_name(t->key, elementid))
1636  return 1;
1637 
1638  return 0;
1639 }
1640 
1642 {
1643  MatroskaMuxContext *mkv = s->priv_data;
1644  int i, ret;
1645 
1647 
1648  if (mkv_check_tag(s->metadata, 0)) {
1649  ret = mkv_write_tag(s, s->metadata, 0, 0, &mkv->tags);
1650  if (ret < 0) return ret;
1651  }
1652 
1653  for (i = 0; i < s->nb_streams; i++) {
1654  AVStream *st = s->streams[i];
1655 
1657  continue;
1658 
1660  continue;
1661 
1662  ret = mkv_write_tag(s, st->metadata, MATROSKA_ID_TAGTARGETS_TRACKUID, i + 1, &mkv->tags);
1663  if (ret < 0) return ret;
1664  }
1665 
1666  if ((s->pb->seekable & AVIO_SEEKABLE_NORMAL) && !mkv->is_live) {
1667  for (i = 0; i < s->nb_streams; i++) {
1668  AVIOContext *pb;
1669  AVStream *st = s->streams[i];
1670  ebml_master tag_target;
1671  ebml_master tag;
1672 
1674  continue;
1675 
1676  mkv_write_tag_targets(s, MATROSKA_ID_TAGTARGETS_TRACKUID, i + 1, &mkv->tags, &tag_target);
1677  pb = mkv->tags_bc;
1678 
1680  put_ebml_string(pb, MATROSKA_ID_TAGNAME, "DURATION");
1681  mkv->stream_duration_offsets[i] = avio_tell(pb);
1682 
1683  // Reserve space to write duration as a 20-byte string.
1684  // 2 (ebml id) + 1 (data size) + 20 (data)
1685  put_ebml_void(pb, 23);
1686  end_ebml_master(pb, tag);
1687  end_ebml_master(pb, tag_target);
1688  }
1689  }
1690 
1691  if (mkv->mode != MODE_WEBM) {
1692  for (i = 0; i < s->nb_chapters; i++) {
1693  AVChapter *ch = s->chapters[i];
1694 
1696  continue;
1697 
1699  if (ret < 0)
1700  return ret;
1701  }
1702  }
1703 
1704  if (mkv->have_attachments && mkv->mode != MODE_WEBM) {
1705  for (i = 0; i < mkv->attachments->num_entries; i++) {
1706  mkv_attachment *attachment = &mkv->attachments->entries[i];
1707  AVStream *st = s->streams[attachment->stream_idx];
1708 
1710  continue;
1711 
1712  ret = mkv_write_tag(s, st->metadata, MATROSKA_ID_TAGTARGETS_ATTACHUID, attachment->fileuid, &mkv->tags);
1713  if (ret < 0)
1714  return ret;
1715  }
1716  }
1717 
1718  if (mkv->tags.pos) {
1719  if ((s->pb->seekable & AVIO_SEEKABLE_NORMAL) && !mkv->is_live)
1720  end_ebml_master_crc32_preliminary(s->pb, &mkv->tags_bc, mkv, mkv->tags);
1721  else
1722  end_ebml_master_crc32(s->pb, &mkv->tags_bc, mkv, mkv->tags);
1723  }
1724  return 0;
1725 }
1726 
1728 {
1729  MatroskaMuxContext *mkv = s->priv_data;
1730  AVIOContext *dyn_cp, *pb = s->pb;
1731  ebml_master attachments;
1732  AVLFG c;
1733  int i, ret;
1734 
1735  if (!mkv->have_attachments)
1736  return 0;
1737 
1738  mkv->attachments = av_mallocz(sizeof(*mkv->attachments));
1739  if (!mkv->attachments)
1740  return AVERROR(ENOMEM);
1741 
1743 
1745  if (ret < 0) return ret;
1746 
1747  ret = start_ebml_master_crc32(pb, &dyn_cp, mkv, &attachments, MATROSKA_ID_ATTACHMENTS, 0);
1748  if (ret < 0) return ret;
1749 
1750  for (i = 0; i < s->nb_streams; i++) {
1751  AVStream *st = s->streams[i];
1752  ebml_master attached_file;
1753  mkv_attachment *attachment = mkv->attachments->entries;
1754  AVDictionaryEntry *t;
1755  const char *mimetype = NULL;
1756  uint32_t fileuid;
1757 
1759  continue;
1760 
1761  attachment = av_realloc_array(attachment, mkv->attachments->num_entries + 1, sizeof(mkv_attachment));
1762  if (!attachment)
1763  return AVERROR(ENOMEM);
1764  mkv->attachments->entries = attachment;
1765 
1766  attached_file = start_ebml_master(dyn_cp, MATROSKA_ID_ATTACHEDFILE, 0);
1767 
1768  if (t = av_dict_get(st->metadata, "title", NULL, 0))
1770  if (!(t = av_dict_get(st->metadata, "filename", NULL, 0))) {
1771  av_log(s, AV_LOG_ERROR, "Attachment stream %d has no filename tag.\n", i);
1772  return AVERROR(EINVAL);
1773  }
1775  if (t = av_dict_get(st->metadata, "mimetype", NULL, 0))
1776  mimetype = t->value;
1777  else if (st->codecpar->codec_id != AV_CODEC_ID_NONE ) {
1778  int i;
1779  for (i = 0; ff_mkv_mime_tags[i].id != AV_CODEC_ID_NONE; i++)
1780  if (ff_mkv_mime_tags[i].id == st->codecpar->codec_id) {
1781  mimetype = ff_mkv_mime_tags[i].str;
1782  break;
1783  }
1784  for (i = 0; ff_mkv_image_mime_tags[i].id != AV_CODEC_ID_NONE; i++)
1785  if (ff_mkv_image_mime_tags[i].id == st->codecpar->codec_id) {
1786  mimetype = ff_mkv_image_mime_tags[i].str;
1787  break;
1788  }
1789  }
1790  if (!mimetype) {
1791  av_log(s, AV_LOG_ERROR, "Attachment stream %d has no mimetype tag and "
1792  "it cannot be deduced from the codec id.\n", i);
1793  return AVERROR(EINVAL);
1794  }
1795 
1796  if (s->flags & AVFMT_FLAG_BITEXACT) {
1797  struct AVSHA *sha = av_sha_alloc();
1798  uint8_t digest[20];
1799  if (!sha)
1800  return AVERROR(ENOMEM);
1801  av_sha_init(sha, 160);
1803  av_sha_final(sha, digest);
1804  av_free(sha);
1805  fileuid = AV_RL32(digest);
1806  } else {
1807  fileuid = av_lfg_get(&c);
1808  }
1809  av_log(s, AV_LOG_VERBOSE, "Using %.8"PRIx32" for attachment %d\n",
1810  fileuid, mkv->attachments->num_entries);
1811 
1812  put_ebml_string(dyn_cp, MATROSKA_ID_FILEMIMETYPE, mimetype);
1814  put_ebml_uint(dyn_cp, MATROSKA_ID_FILEUID, fileuid);
1815  end_ebml_master(dyn_cp, attached_file);
1816 
1818  mkv->attachments->entries[mkv->attachments->num_entries++].fileuid = fileuid;
1819  }
1820  end_ebml_master_crc32(pb, &dyn_cp, mkv, attachments);
1821 
1822  return 0;
1823 }
1824 
1826 {
1827  int i = 0;
1828  int64_t max = 0;
1829  int64_t us;
1830 
1831  AVDictionaryEntry *explicitDuration = av_dict_get(s->metadata, "DURATION", NULL, 0);
1832  if (explicitDuration && (av_parse_time(&us, explicitDuration->value, 1) == 0) && us > 0) {
1833  av_log(s, AV_LOG_DEBUG, "get_metadata_duration found duration in context metadata: %" PRId64 "\n", us);
1834  return us;
1835  }
1836 
1837  for (i = 0; i < s->nb_streams; i++) {
1838  int64_t us;
1839  AVDictionaryEntry *duration = av_dict_get(s->streams[i]->metadata, "DURATION", NULL, 0);
1840 
1841  if (duration && (av_parse_time(&us, duration->value, 1) == 0))
1842  max = FFMAX(max, us);
1843  }
1844 
1845  av_log(s, AV_LOG_DEBUG, "get_metadata_duration returned: %" PRId64 "\n", max);
1846  return max;
1847 }
1848 
1850 {
1851  MatroskaMuxContext *mkv = s->priv_data;
1852  AVIOContext *pb = s->pb;
1855  int ret, i, version = 2;
1856  int64_t creation_time;
1857 
1858  if (!strcmp(s->oformat->name, "webm"))
1859  mkv->mode = MODE_WEBM;
1860  else
1861  mkv->mode = MODE_MATROSKAv2;
1862 
1863  if (mkv->mode != MODE_WEBM ||
1864  av_dict_get(s->metadata, "stereo_mode", NULL, 0) ||
1865  av_dict_get(s->metadata, "alpha_mode", NULL, 0))
1866  version = 4;
1867 
1868  for (i = 0; i < s->nb_streams; i++) {
1869  if (s->streams[i]->codecpar->codec_id == AV_CODEC_ID_OPUS ||
1870  av_dict_get(s->streams[i]->metadata, "stereo_mode", NULL, 0) ||
1871  av_dict_get(s->streams[i]->metadata, "alpha_mode", NULL, 0))
1872  version = 4;
1873  }
1874 
1875  mkv->tracks = av_mallocz_array(s->nb_streams, sizeof(*mkv->tracks));
1876  if (!mkv->tracks) {
1877  ret = AVERROR(ENOMEM);
1878  goto fail;
1879  }
1880  ebml_header = start_ebml_master(pb, EBML_ID_HEADER, 0);
1886  put_ebml_uint (pb, EBML_ID_DOCTYPEVERSION , version);
1888  end_ebml_master(pb, ebml_header);
1889 
1891  mkv->segment_offset = avio_tell(pb);
1892 
1893  // we write 2 seek heads - one at the end of the file to point to each
1894  // cluster, and one at the beginning to point to all other level one
1895  // elements (including the seek head at the end of the file), which
1896  // isn't more than 10 elements if we only write one of each other
1897  // currently defined level 1 element
1898  mkv->main_seekhead = mkv_start_seekhead(pb, mkv->segment_offset, 10);
1899  if (!mkv->main_seekhead) {
1900  ret = AVERROR(ENOMEM);
1901  goto fail;
1902  }
1903 
1905  if (ret < 0) goto fail;
1906 
1907  ret = start_ebml_master_crc32(pb, &mkv->info_bc, mkv, &mkv->info, MATROSKA_ID_INFO, 0);
1908  if (ret < 0)
1909  return ret;
1910  pb = mkv->info_bc;
1911 
1913  if ((tag = av_dict_get(s->metadata, "title", NULL, 0)))
1915  if (!(s->flags & AVFMT_FLAG_BITEXACT)) {
1917  if ((tag = av_dict_get(s->metadata, "encoding_tool", NULL, 0)))
1919  else
1921 
1922  if (mkv->mode != MODE_WEBM) {
1923  uint32_t segment_uid[4];
1924  AVLFG lfg;
1925 
1927 
1928  for (i = 0; i < 4; i++)
1929  segment_uid[i] = av_lfg_get(&lfg);
1930 
1931  put_ebml_binary(pb, MATROSKA_ID_SEGMENTUID, segment_uid, 16);
1932  }
1933  } else {
1934  const char *ident = "Lavf";
1937  }
1938 
1939  if (ff_parse_creation_time_metadata(s, &creation_time, 0) > 0) {
1940  // Adjust time so it's relative to 2001-01-01 and convert to nanoseconds.
1941  int64_t date_utc = (creation_time - 978307200000000LL) * 1000;
1942  uint8_t date_utc_buf[8];
1943  AV_WB64(date_utc_buf, date_utc);
1944  put_ebml_binary(pb, MATROSKA_ID_DATEUTC, date_utc_buf, 8);
1945  }
1946 
1947  // reserve space for the duration
1948  mkv->duration = 0;
1949  mkv->duration_offset = avio_tell(pb);
1950  if (!mkv->is_live) {
1951  int64_t metadata_duration = get_metadata_duration(s);
1952 
1953  if (s->duration > 0) {
1954  int64_t scaledDuration = av_rescale(s->duration, 1000, AV_TIME_BASE);
1955  put_ebml_float(pb, MATROSKA_ID_DURATION, scaledDuration);
1956  av_log(s, AV_LOG_DEBUG, "Write early duration from recording time = %" PRIu64 "\n", scaledDuration);
1957  } else if (metadata_duration > 0) {
1958  int64_t scaledDuration = av_rescale(metadata_duration, 1000, AV_TIME_BASE);
1959  put_ebml_float(pb, MATROSKA_ID_DURATION, scaledDuration);
1960  av_log(s, AV_LOG_DEBUG, "Write early duration from metadata = %" PRIu64 "\n", scaledDuration);
1961  } else {
1962  put_ebml_void(pb, 11); // assumes double-precision float to be written
1963  }
1964  }
1965  if ((s->pb->seekable & AVIO_SEEKABLE_NORMAL) && !mkv->is_live)
1966  end_ebml_master_crc32_preliminary(s->pb, &mkv->info_bc, mkv, mkv->info);
1967  else
1968  end_ebml_master_crc32(s->pb, &mkv->info_bc, mkv, mkv->info);
1969  pb = s->pb;
1970 
1971  // initialize stream_duration fields
1972  mkv->stream_durations = av_mallocz(s->nb_streams * sizeof(int64_t));
1973  mkv->stream_duration_offsets = av_mallocz(s->nb_streams * sizeof(int64_t));
1974  if (!mkv->stream_durations || !mkv->stream_duration_offsets) {
1975  ret = AVERROR(ENOMEM);
1976  goto fail;
1977  }
1978 
1979  ret = mkv_write_tracks(s);
1980  if (ret < 0)
1981  goto fail;
1982 
1983  for (i = 0; i < s->nb_chapters; i++)
1984  mkv->chapter_id_offset = FFMAX(mkv->chapter_id_offset, 1LL - s->chapters[i]->id);
1985 
1986  ret = mkv_write_chapters(s);
1987  if (ret < 0)
1988  goto fail;
1989 
1990  if (mkv->mode != MODE_WEBM) {
1991  ret = mkv_write_attachments(s);
1992  if (ret < 0)
1993  goto fail;
1994  }
1995 
1996  ret = mkv_write_tags(s);
1997  if (ret < 0)
1998  goto fail;
1999 
2000  if (!(s->pb->seekable & AVIO_SEEKABLE_NORMAL) && !mkv->is_live)
2001  mkv_write_seekhead(pb, mkv);
2002 
2003  mkv->cues = mkv_start_cues(mkv->segment_offset);
2004  if (!mkv->cues) {
2005  ret = AVERROR(ENOMEM);
2006  goto fail;
2007  }
2008  if ((pb->seekable & AVIO_SEEKABLE_NORMAL) && mkv->reserve_cues_space) {
2009  mkv->cues_pos = avio_tell(pb);
2010  if (mkv->reserve_cues_space == 1)
2011  mkv->reserve_cues_space++;
2013  }
2014 
2016  mkv->cur_audio_pkt.size = 0;
2017  mkv->cluster_pos = -1;
2018 
2019  avio_flush(pb);
2020 
2021  // start a new cluster every 5 MB or 5 sec, or 32k / 1 sec for streaming or
2022  // after 4k and on a keyframe
2023  if (pb->seekable & AVIO_SEEKABLE_NORMAL) {
2024  if (mkv->cluster_time_limit < 0)
2025  mkv->cluster_time_limit = 5000;
2026  if (mkv->cluster_size_limit < 0)
2027  mkv->cluster_size_limit = 5 * 1024 * 1024;
2028  } else {
2029  if (mkv->cluster_time_limit < 0)
2030  mkv->cluster_time_limit = 1000;
2031  if (mkv->cluster_size_limit < 0)
2032  mkv->cluster_size_limit = 32 * 1024;
2033  }
2034 
2035  return 0;
2036 fail:
2037  mkv_free(mkv);
2038  return ret;
2039 }
2040 
2041 static int mkv_blockgroup_size(int pkt_size)
2042 {
2043  int size = pkt_size + 4;
2044  size += ebml_num_size(size);
2045  size += 2; // EBML ID for block and block duration
2046  size += 8; // max size of block duration
2047  size += ebml_num_size(size);
2048  size += 1; // blockgroup EBML ID
2049  return size;
2050 }
2051 
2052 static int mkv_strip_wavpack(const uint8_t *src, uint8_t **pdst, int *size)
2053 {
2054  uint8_t *dst;
2055  int srclen = *size;
2056  int offset = 0;
2057  int ret;
2058 
2059  dst = av_malloc(srclen);
2060  if (!dst)
2061  return AVERROR(ENOMEM);
2062 
2063  while (srclen >= WV_HEADER_SIZE) {
2064  WvHeader header;
2065 
2066  ret = ff_wv_parse_header(&header, src);
2067  if (ret < 0)
2068  goto fail;
2069  src += WV_HEADER_SIZE;
2070  srclen -= WV_HEADER_SIZE;
2071 
2072  if (srclen < header.blocksize) {
2073  ret = AVERROR_INVALIDDATA;
2074  goto fail;
2075  }
2076 
2077  if (header.initial) {
2078  AV_WL32(dst + offset, header.samples);
2079  offset += 4;
2080  }
2081  AV_WL32(dst + offset, header.flags);
2082  AV_WL32(dst + offset + 4, header.crc);
2083  offset += 8;
2084 
2085  if (!(header.initial && header.final)) {
2086  AV_WL32(dst + offset, header.blocksize);
2087  offset += 4;
2088  }
2089 
2090  memcpy(dst + offset, src, header.blocksize);
2091  src += header.blocksize;
2092  srclen -= header.blocksize;
2093  offset += header.blocksize;
2094  }
2095 
2096  *pdst = dst;
2097  *size = offset;
2098 
2099  return 0;
2100 fail:
2101  av_freep(&dst);
2102  return ret;
2103 }
2104 
2106  unsigned int blockid, AVPacket *pkt, int keyframe)
2107 {
2108  MatroskaMuxContext *mkv = s->priv_data;
2110  uint8_t *data = NULL, *side_data = NULL;
2111  int offset = 0, size = pkt->size, side_data_size = 0;
2112  int64_t ts = mkv->tracks[pkt->stream_index].write_dts ? pkt->dts : pkt->pts;
2113  uint64_t additional_id = 0;
2114  int64_t discard_padding = 0;
2115  uint8_t track_number = (mkv->is_dash ? mkv->dash_track_number : (pkt->stream_index + 1));
2116  ebml_master block_group, block_additions, block_more;
2117 
2118  ts += mkv->tracks[pkt->stream_index].ts_offset;
2119 
2120  av_log(s, AV_LOG_DEBUG, "Writing block at offset %" PRIu64 ", size %d, "
2121  "pts %" PRId64 ", dts %" PRId64 ", duration %" PRId64 ", keyframe %d\n",
2122  avio_tell(pb), pkt->size, pkt->pts, pkt->dts, pkt->duration,
2123  keyframe != 0);
2124  if (par->codec_id == AV_CODEC_ID_H264 && par->extradata_size > 0 &&
2125  (AV_RB24(par->extradata) == 1 || AV_RB32(par->extradata) == 1))
2126  ff_avc_parse_nal_units_buf(pkt->data, &data, &size);
2127  else if (par->codec_id == AV_CODEC_ID_HEVC && par->extradata_size > 6 &&
2128  (AV_RB24(par->extradata) == 1 || AV_RB32(par->extradata) == 1))
2129  /* extradata is Annex B, assume the bitstream is too and convert it */
2130  ff_hevc_annexb2mp4_buf(pkt->data, &data, &size, 0, NULL);
2131  else if (par->codec_id == AV_CODEC_ID_AV1)
2132  ff_av1_filter_obus_buf(pkt->data, &data, &size);
2133  else if (par->codec_id == AV_CODEC_ID_WAVPACK) {
2134  int ret = mkv_strip_wavpack(pkt->data, &data, &size);
2135  if (ret < 0) {
2136  av_log(s, AV_LOG_ERROR, "Error stripping a WavPack packet.\n");
2137  return;
2138  }
2139  } else
2140  data = pkt->data;
2141 
2142  if (par->codec_id == AV_CODEC_ID_PRORES && size >= 8) {
2143  /* Matroska specification requires to remove the first QuickTime atom
2144  */
2145  size -= 8;
2146  offset = 8;
2147  }
2148 
2149  side_data = av_packet_get_side_data(pkt,
2151  &side_data_size);
2152 
2153  if (side_data && side_data_size >= 10) {
2154  discard_padding = av_rescale_q(AV_RL32(side_data + 4),
2155  (AVRational){1, par->sample_rate},
2156  (AVRational){1, 1000000000});
2157  }
2158 
2159  side_data = av_packet_get_side_data(pkt,
2161  &side_data_size);
2162  if (side_data) {
2163  additional_id = AV_RB64(side_data);
2164  side_data += 8;
2165  side_data_size -= 8;
2166  }
2167 
2168  if ((side_data_size && additional_id == 1) || discard_padding) {
2169  block_group = start_ebml_master(pb, MATROSKA_ID_BLOCKGROUP, 0);
2170  blockid = MATROSKA_ID_BLOCK;
2171  }
2172 
2173  put_ebml_id(pb, blockid);
2174  put_ebml_num(pb, size + 4, 0);
2175  // this assumes stream_index is less than 126
2176  avio_w8(pb, 0x80 | track_number);
2177  avio_wb16(pb, ts - mkv->cluster_pts);
2178  avio_w8(pb, (blockid == MATROSKA_ID_SIMPLEBLOCK && keyframe) ? (1 << 7) : 0);
2179  avio_write(pb, data + offset, size);
2180  if (data != pkt->data)
2181  av_free(data);
2182 
2183  if (blockid == MATROSKA_ID_BLOCK && !keyframe) {
2185  mkv->last_track_timestamp[track_number - 1]);
2186  }
2187  mkv->last_track_timestamp[track_number - 1] = ts - mkv->cluster_pts;
2188 
2189  if (discard_padding) {
2190  put_ebml_sint(pb, MATROSKA_ID_DISCARDPADDING, discard_padding);
2191  }
2192 
2193  if (side_data_size && additional_id == 1) {
2194  block_additions = start_ebml_master(pb, MATROSKA_ID_BLOCKADDITIONS, 0);
2195  block_more = start_ebml_master(pb, MATROSKA_ID_BLOCKMORE, 0);
2198  put_ebml_num(pb, side_data_size, 0);
2199  avio_write(pb, side_data, side_data_size);
2200  end_ebml_master(pb, block_more);
2201  end_ebml_master(pb, block_additions);
2202  }
2203  if ((side_data_size && additional_id == 1) || discard_padding) {
2204  end_ebml_master(pb, block_group);
2205  }
2206 }
2207 
2209 {
2210  MatroskaMuxContext *mkv = s->priv_data;
2211  ebml_master blockgroup;
2212  int id_size, settings_size, size;
2213  uint8_t *id, *settings;
2214  int64_t ts = mkv->tracks[pkt->stream_index].write_dts ? pkt->dts : pkt->pts;
2215  const int flags = 0;
2216 
2217  id_size = 0;
2219  &id_size);
2220 
2221  settings_size = 0;
2223  &settings_size);
2224 
2225  size = id_size + 1 + settings_size + 1 + pkt->size;
2226 
2227  av_log(s, AV_LOG_DEBUG, "Writing block at offset %" PRIu64 ", size %d, "
2228  "pts %" PRId64 ", dts %" PRId64 ", duration %" PRId64 ", flags %d\n",
2229  avio_tell(pb), size, pkt->pts, pkt->dts, pkt->duration, flags);
2230 
2232 
2234  put_ebml_num(pb, size + 4, 0);
2235  avio_w8(pb, 0x80 | (pkt->stream_index + 1)); // this assumes stream_index is less than 126
2236  avio_wb16(pb, ts - mkv->cluster_pts);
2237  avio_w8(pb, flags);
2238  avio_printf(pb, "%.*s\n%.*s\n%.*s", id_size, id, settings_size, settings, pkt->size, pkt->data);
2239 
2241  end_ebml_master(pb, blockgroup);
2242 
2243  return pkt->duration;
2244 }
2245 
2247 {
2248  MatroskaMuxContext *mkv = s->priv_data;
2249 
2250  end_ebml_master_crc32(s->pb, &mkv->dyn_bc, mkv, mkv->cluster);
2251  mkv->cluster_pos = -1;
2252  if (s->pb->seekable & AVIO_SEEKABLE_NORMAL)
2253  av_log(s, AV_LOG_DEBUG,
2254  "Starting new cluster at offset %" PRIu64 " bytes, "
2255  "pts %" PRIu64 "dts %" PRIu64 "\n",
2256  avio_tell(s->pb), pkt->pts, pkt->dts);
2257  else
2258  av_log(s, AV_LOG_DEBUG, "Starting new cluster, "
2259  "pts %" PRIu64 "dts %" PRIu64 "\n",
2260  pkt->pts, pkt->dts);
2261  avio_flush(s->pb);
2262 }
2263 
2265 {
2266  MatroskaMuxContext *mkv = s->priv_data;
2267  mkv_track *track = &mkv->tracks[pkt->stream_index];
2269  uint8_t *side_data;
2270  int side_data_size = 0, ret;
2271 
2273  &side_data_size);
2274 
2275  switch (par->codec_id) {
2276  case AV_CODEC_ID_AAC:
2277  if (side_data_size && (s->pb->seekable & AVIO_SEEKABLE_NORMAL) && !mkv->is_live) {
2278  int filler, output_sample_rate = 0;
2279  int64_t curpos;
2280  ret = get_aac_sample_rates(s, side_data, side_data_size, &track->sample_rate,
2281  &output_sample_rate);
2282  if (ret < 0)
2283  return ret;
2284  if (!output_sample_rate)
2285  output_sample_rate = track->sample_rate; // Space is already reserved, so it's this or a void element.
2286  av_freep(&par->extradata);
2287  ret = ff_alloc_extradata(par, side_data_size);
2288  if (ret < 0)
2289  return ret;
2290  memcpy(par->extradata, side_data, side_data_size);
2291  curpos = avio_tell(mkv->tracks_bc);
2292  avio_seek(mkv->tracks_bc, track->codecpriv_offset, SEEK_SET);
2293  mkv_write_codecprivate(s, mkv->tracks_bc, par, 1, 0);
2294  filler = MAX_PCE_SIZE + 2 + 4 - (avio_tell(mkv->tracks_bc) - track->codecpriv_offset);
2295  if (filler)
2296  put_ebml_void(mkv->tracks_bc, filler);
2297  avio_seek(mkv->tracks_bc, track->sample_rate_offset, SEEK_SET);
2299  put_ebml_float(mkv->tracks_bc, MATROSKA_ID_AUDIOOUTSAMPLINGFREQ, output_sample_rate);
2300  avio_seek(mkv->tracks_bc, curpos, SEEK_SET);
2301  } else if (!par->extradata_size && !track->sample_rate) {
2302  // No extradata (codecpar or packet side data).
2303  av_log(s, AV_LOG_ERROR, "Error parsing AAC extradata, unable to determine samplerate.\n");
2304  return AVERROR(EINVAL);
2305  }
2306  break;
2307  case AV_CODEC_ID_FLAC:
2308  if (side_data_size && (s->pb->seekable & AVIO_SEEKABLE_NORMAL) && !mkv->is_live) {
2309  AVCodecParameters *codecpriv_par;
2310  int64_t curpos;
2311  if (side_data_size != par->extradata_size) {
2312  av_log(s, AV_LOG_ERROR, "Invalid FLAC STREAMINFO metadata for output stream %d\n",
2313  pkt->stream_index);
2314  return AVERROR(EINVAL);
2315  }
2316  codecpriv_par = avcodec_parameters_alloc();
2317  if (!codecpriv_par)
2318  return AVERROR(ENOMEM);
2319  ret = avcodec_parameters_copy(codecpriv_par, par);
2320  if (ret < 0) {
2321  avcodec_parameters_free(&codecpriv_par);
2322  return ret;
2323  }
2324  memcpy(codecpriv_par->extradata, side_data, side_data_size);
2325  curpos = avio_tell(mkv->tracks_bc);
2326  avio_seek(mkv->tracks_bc, track->codecpriv_offset, SEEK_SET);
2327  mkv_write_codecprivate(s, mkv->tracks_bc, codecpriv_par, 1, 0);
2328  avio_seek(mkv->tracks_bc, curpos, SEEK_SET);
2329  avcodec_parameters_free(&codecpriv_par);
2330  }
2331  break;
2332  // FIXME: Remove the following once libaom starts propagating extradata during init()
2333  // See https://bugs.chromium.org/p/aomedia/issues/detail?id=2012
2334  case AV_CODEC_ID_AV1:
2335  if (side_data_size && (s->pb->seekable & AVIO_SEEKABLE_NORMAL) && !mkv->is_live &&
2336  !par->extradata_size) {
2337  AVIOContext *dyn_cp;
2338  uint8_t *codecpriv;
2339  int codecpriv_size;
2340  int64_t curpos;
2341  ret = avio_open_dyn_buf(&dyn_cp);
2342  if (ret < 0)
2343  return ret;
2344  ff_isom_write_av1c(dyn_cp, side_data, side_data_size);
2345  codecpriv_size = avio_close_dyn_buf(dyn_cp, &codecpriv);
2346  if (!codecpriv_size) {
2347  av_free(codecpriv);
2348  return AVERROR_INVALIDDATA;
2349  }
2350  curpos = avio_tell(mkv->tracks_bc);
2351  avio_seek(mkv->tracks_bc, track->codecpriv_offset, SEEK_SET);
2352  // Do not write the OBUs as we don't have space saved for them
2353  put_ebml_binary(mkv->tracks_bc, MATROSKA_ID_CODECPRIVATE, codecpriv, 4);
2354  av_free(codecpriv);
2355  avio_seek(mkv->tracks_bc, curpos, SEEK_SET);
2356  ret = ff_alloc_extradata(par, side_data_size);
2357  if (ret < 0)
2358  return ret;
2359  memcpy(par->extradata, side_data, side_data_size);
2360  } else if (!par->extradata_size)
2361  return AVERROR_INVALIDDATA;
2362  break;
2363  default:
2364  if (side_data_size)
2365  av_log(s, AV_LOG_DEBUG, "Ignoring new extradata in a packet for stream %d.\n", pkt->stream_index);
2366  break;
2367  }
2368 
2369  return 0;
2370 }
2371 
2373 {
2374  MatroskaMuxContext *mkv = s->priv_data;
2375  AVIOContext *pb = s->pb;
2377  int keyframe = !!(pkt->flags & AV_PKT_FLAG_KEY);
2378  int duration = pkt->duration;
2379  int ret;
2380  int64_t ts = mkv->tracks[pkt->stream_index].write_dts ? pkt->dts : pkt->pts;
2381  int64_t relative_packet_pos;
2382  int dash_tracknum = mkv->is_dash ? mkv->dash_track_number : pkt->stream_index + 1;
2383 
2384  if (ts == AV_NOPTS_VALUE) {
2385  av_log(s, AV_LOG_ERROR, "Can't write packet with unknown timestamp\n");
2386  return AVERROR(EINVAL);
2387  }
2388  ts += mkv->tracks[pkt->stream_index].ts_offset;
2389 
2390  if (mkv->cluster_pos != -1) {
2391  int64_t cluster_time = ts - mkv->cluster_pts + mkv->tracks[pkt->stream_index].ts_offset;
2392  if ((int16_t)cluster_time != cluster_time) {
2393  av_log(s, AV_LOG_WARNING, "Starting new cluster due to timestamp\n");
2394  mkv_start_new_cluster(s, pkt);
2395  }
2396  }
2397 
2398  if (mkv->cluster_pos == -1) {
2399  mkv->cluster_pos = avio_tell(s->pb);
2400  ret = start_ebml_master_crc32(s->pb, &mkv->dyn_bc, mkv, &mkv->cluster, MATROSKA_ID_CLUSTER, 0);
2401  if (ret < 0)
2402  return ret;
2404  mkv->cluster_pts = FFMAX(0, ts);
2405  }
2406  pb = mkv->dyn_bc;
2407 
2408  relative_packet_pos = avio_tell(pb);
2409 
2410  if (par->codec_type != AVMEDIA_TYPE_SUBTITLE) {
2411  mkv_write_block(s, pb, MATROSKA_ID_SIMPLEBLOCK, pkt, keyframe);
2412  if ((s->pb->seekable & AVIO_SEEKABLE_NORMAL) && (par->codec_type == AVMEDIA_TYPE_VIDEO && keyframe || add_cue)) {
2413  ret = mkv_add_cuepoint(mkv->cues, pkt->stream_index, dash_tracknum, ts, mkv->cluster_pos, relative_packet_pos, -1);
2414  if (ret < 0) return ret;
2415  }
2416  } else {
2417  if (par->codec_id == AV_CODEC_ID_WEBVTT) {
2418  duration = mkv_write_vtt_blocks(s, pb, pkt);
2419  } else {
2421  mkv_blockgroup_size(pkt->size));
2422 
2423 #if FF_API_CONVERGENCE_DURATION
2425  /* For backward compatibility, prefer convergence_duration. */
2426  if (pkt->convergence_duration > 0) {
2427  duration = pkt->convergence_duration;
2428  }
2430 #endif
2431  /* All subtitle blocks are considered to be keyframes. */
2432  mkv_write_block(s, pb, MATROSKA_ID_BLOCK, pkt, 1);
2434  end_ebml_master(pb, blockgroup);
2435  }
2436 
2437  if (s->pb->seekable & AVIO_SEEKABLE_NORMAL) {
2438  ret = mkv_add_cuepoint(mkv->cues, pkt->stream_index, dash_tracknum, ts,
2439  mkv->cluster_pos, relative_packet_pos, duration);
2440  if (ret < 0)
2441  return ret;
2442  }
2443  }
2444 
2445  mkv->duration = FFMAX(mkv->duration, ts + duration);
2446 
2447  if (mkv->stream_durations)
2448  mkv->stream_durations[pkt->stream_index] =
2449  FFMAX(mkv->stream_durations[pkt->stream_index], ts + duration);
2450 
2451  return 0;
2452 }
2453 
2455 {
2456  MatroskaMuxContext *mkv = s->priv_data;
2458  int keyframe = !!(pkt->flags & AV_PKT_FLAG_KEY);
2459  int cluster_size;
2460  int64_t cluster_time;
2461  int ret;
2462  int start_new_cluster;
2463 
2464  ret = mkv_check_new_extra_data(s, pkt);
2465  if (ret < 0)
2466  return ret;
2467 
2468  if (mkv->tracks[pkt->stream_index].write_dts)
2469  cluster_time = pkt->dts - mkv->cluster_pts;
2470  else
2471  cluster_time = pkt->pts - mkv->cluster_pts;
2472  cluster_time += mkv->tracks[pkt->stream_index].ts_offset;
2473 
2474  // start a new cluster every 5 MB or 5 sec, or 32k / 1 sec for streaming or
2475  // after 4k and on a keyframe
2476  cluster_size = avio_tell(mkv->dyn_bc);
2477 
2478  if (mkv->is_dash && codec_type == AVMEDIA_TYPE_VIDEO) {
2479  // WebM DASH specification states that the first block of every cluster
2480  // has to be a key frame. So for DASH video, we only create a cluster
2481  // on seeing key frames.
2482  start_new_cluster = keyframe;
2483  } else if (mkv->is_dash && codec_type == AVMEDIA_TYPE_AUDIO &&
2484  (mkv->cluster_pos == -1 ||
2485  cluster_time > mkv->cluster_time_limit)) {
2486  // For DASH audio, we create a Cluster based on cluster_time_limit
2487  start_new_cluster = 1;
2488  } else if (!mkv->is_dash &&
2489  (cluster_size > mkv->cluster_size_limit ||
2490  cluster_time > mkv->cluster_time_limit ||
2491  (codec_type == AVMEDIA_TYPE_VIDEO && keyframe &&
2492  cluster_size > 4 * 1024))) {
2493  start_new_cluster = 1;
2494  } else {
2495  start_new_cluster = 0;
2496  }
2497 
2498  if (mkv->cluster_pos != -1 && start_new_cluster) {
2499  mkv_start_new_cluster(s, pkt);
2500  }
2501 
2502  if (!mkv->cluster_pos)
2503  avio_write_marker(s->pb,
2506 
2507  // check if we have an audio packet cached
2508  if (mkv->cur_audio_pkt.size > 0) {
2509  // for DASH audio, a CuePoint has to be added when there is a new cluster.
2511  mkv->is_dash ? start_new_cluster : 0);
2513  if (ret < 0) {
2514  av_log(s, AV_LOG_ERROR,
2515  "Could not write cached audio packet ret:%d\n", ret);
2516  return ret;
2517  }
2518  }
2519 
2520  // buffer an audio packet to ensure the packet containing the video
2521  // keyframe's timecode is contained in the same cluster for WebM
2522  if (codec_type == AVMEDIA_TYPE_AUDIO) {
2523  ret = av_packet_ref(&mkv->cur_audio_pkt, pkt);
2524  } else
2525  ret = mkv_write_packet_internal(s, pkt, 0);
2526  return ret;
2527 }
2528 
2530 {
2531  MatroskaMuxContext *mkv = s->priv_data;
2532 
2533  if (!pkt) {
2534  if (mkv->cluster_pos != -1) {
2535  end_ebml_master_crc32(s->pb, &mkv->dyn_bc, mkv, mkv->cluster);
2536  mkv->cluster_pos = -1;
2537  if (s->pb->seekable & AVIO_SEEKABLE_NORMAL)
2538  av_log(s, AV_LOG_DEBUG,
2539  "Flushing cluster at offset %" PRIu64 " bytes\n",
2540  avio_tell(s->pb));
2541  else
2542  av_log(s, AV_LOG_DEBUG, "Flushing cluster\n");
2543  avio_flush(s->pb);
2544  }
2545  return 1;
2546  }
2547  return mkv_write_packet(s, pkt);
2548 }
2549 
2551 {
2552  MatroskaMuxContext *mkv = s->priv_data;
2553  AVIOContext *pb = s->pb;
2554  int64_t currentpos, cuespos;
2555  int ret;
2556 
2557  // check if we have an audio packet cached
2558  if (mkv->cur_audio_pkt.size > 0) {
2559  ret = mkv_write_packet_internal(s, &mkv->cur_audio_pkt, 0);
2561  if (ret < 0) {
2562  av_log(s, AV_LOG_ERROR,
2563  "Could not write cached audio packet ret:%d\n", ret);
2564  return ret;
2565  }
2566  }
2567 
2568  if (mkv->dyn_bc) {
2569  end_ebml_master_crc32(pb, &mkv->dyn_bc, mkv, mkv->cluster);
2570  }
2571 
2572  ret = mkv_write_chapters(s);
2573  if (ret < 0)
2574  return ret;
2575 
2576 
2577  if ((pb->seekable & AVIO_SEEKABLE_NORMAL) && !mkv->is_live) {
2578  if (mkv->cues->num_entries) {
2579  if (mkv->reserve_cues_space) {
2580  int64_t cues_end;
2581 
2582  currentpos = avio_tell(pb);
2583  avio_seek(pb, mkv->cues_pos, SEEK_SET);
2584 
2585  cuespos = mkv_write_cues(s, mkv->cues, mkv->tracks, s->nb_streams);
2586  cues_end = avio_tell(pb);
2587  if (cues_end > cuespos + mkv->reserve_cues_space) {
2588  av_log(s, AV_LOG_ERROR,
2589  "Insufficient space reserved for cues: %d "
2590  "(needed: %" PRId64 ").\n",
2591  mkv->reserve_cues_space, cues_end - cuespos);
2592  return AVERROR(EINVAL);
2593  }
2594 
2595  if (cues_end < cuespos + mkv->reserve_cues_space)
2597  (cues_end - cuespos));
2598 
2599  avio_seek(pb, currentpos, SEEK_SET);
2600  } else {
2601  cuespos = mkv_write_cues(s, mkv->cues, mkv->tracks, s->nb_streams);
2602  }
2603 
2605  cuespos);
2606  if (ret < 0)
2607  return ret;
2608  }
2609 
2610  mkv_write_seekhead(pb, mkv);
2611 
2612  // update the duration
2613  av_log(s, AV_LOG_DEBUG, "end duration = %" PRIu64 "\n", mkv->duration);
2614  currentpos = avio_tell(pb);
2615  avio_seek(mkv->info_bc, mkv->duration_offset, SEEK_SET);
2617  avio_seek(pb, mkv->info.pos, SEEK_SET);
2618  end_ebml_master_crc32(pb, &mkv->info_bc, mkv, mkv->info);
2619 
2620  // write tracks master
2621  avio_seek(pb, mkv->tracks_master.pos, SEEK_SET);
2622  end_ebml_master_crc32(pb, &mkv->tracks_bc, mkv, mkv->tracks_master);
2623 
2624  // update stream durations
2625  if (!mkv->is_live && mkv->stream_durations) {
2626  int i;
2627  int64_t curr = avio_tell(mkv->tags_bc);
2628  for (i = 0; i < s->nb_streams; ++i) {
2629  AVStream *st = s->streams[i];
2630 
2631  if (mkv->stream_duration_offsets[i] > 0) {
2632  double duration_sec = mkv->stream_durations[i] * av_q2d(st->time_base);
2633  char duration_string[20] = "";
2634 
2635  av_log(s, AV_LOG_DEBUG, "stream %d end duration = %" PRIu64 "\n", i,
2636  mkv->stream_durations[i]);
2637 
2638  avio_seek(mkv->tags_bc, mkv->stream_duration_offsets[i], SEEK_SET);
2639 
2640  snprintf(duration_string, 20, "%02d:%02d:%012.9f",
2641  (int) duration_sec / 3600, ((int) duration_sec / 60) % 60,
2642  fmod(duration_sec, 60));
2643 
2644  put_ebml_binary(mkv->tags_bc, MATROSKA_ID_TAGSTRING, duration_string, 20);
2645  }
2646  }
2647  avio_seek(mkv->tags_bc, curr, SEEK_SET);
2648  }
2649  if (mkv->tags.pos && !mkv->is_live) {
2650  avio_seek(pb, mkv->tags.pos, SEEK_SET);
2651  end_ebml_master_crc32(pb, &mkv->tags_bc, mkv, mkv->tags);
2652  }
2653 
2654  avio_seek(pb, currentpos, SEEK_SET);
2655  }
2656 
2657  if (!mkv->is_live) {
2658  end_ebml_master(pb, mkv->segment);
2659  }
2660 
2661  mkv_free(mkv);
2662  return 0;
2663 }
2664 
2665 static int mkv_query_codec(enum AVCodecID codec_id, int std_compliance)
2666 {
2667  int i;
2668  for (i = 0; ff_mkv_codec_tags[i].id != AV_CODEC_ID_NONE; i++)
2669  if (ff_mkv_codec_tags[i].id == codec_id)
2670  return 1;
2671 
2672  if (std_compliance < FF_COMPLIANCE_NORMAL) {
2673  enum AVMediaType type = avcodec_get_type(codec_id);
2674  // mkv theoretically supports any video/audio through VFW/ACM
2675  if (type == AVMEDIA_TYPE_VIDEO || type == AVMEDIA_TYPE_AUDIO)
2676  return 1;
2677  }
2678 
2679  return 0;
2680 }
2681 
2682 static int mkv_init(struct AVFormatContext *s)
2683 {
2684  int i;
2685 
2686  if (s->nb_streams > MAX_TRACKS) {
2687  av_log(s, AV_LOG_ERROR,
2688  "At most %d streams are supported for muxing in Matroska\n",
2689  MAX_TRACKS);
2690  return AVERROR(EINVAL);
2691  }
2692 
2693  for (i = 0; i < s->nb_streams; i++) {
2694  if (s->streams[i]->codecpar->codec_id == AV_CODEC_ID_ATRAC3 ||
2700  av_log(s, AV_LOG_ERROR,
2701  "The Matroska muxer does not yet support muxing %s\n",
2703  return AVERROR_PATCHWELCOME;
2704  }
2705  }
2706 
2707  if (s->avoid_negative_ts < 0) {
2708  s->avoid_negative_ts = 1;
2710  }
2711 
2712  for (i = 0; i < s->nb_streams; i++) {
2713  // ms precision is the de-facto standard timescale for mkv files
2714  avpriv_set_pts_info(s->streams[i], 64, 1, 1000);
2715  }
2716 
2717  return 0;
2718 }
2719 
2720 static int mkv_check_bitstream(struct AVFormatContext *s, const AVPacket *pkt)
2721 {
2722  int ret = 1;
2723  AVStream *st = s->streams[pkt->stream_index];
2724 
2725  if (st->codecpar->codec_id == AV_CODEC_ID_AAC) {
2726  if (pkt->size > 2 && (AV_RB16(pkt->data) & 0xfff0) == 0xfff0)
2727  ret = ff_stream_add_bitstream_filter(st, "aac_adtstoasc", NULL);
2728  } else if (st->codecpar->codec_id == AV_CODEC_ID_VP9) {
2729  ret = ff_stream_add_bitstream_filter(st, "vp9_superframe", NULL);
2730  }
2731 
2732  return ret;
2733 }
2734 
2736  { AV_CODEC_ID_ALAC, 0XFFFFFFFF },
2737  { AV_CODEC_ID_EAC3, 0XFFFFFFFF },
2738  { AV_CODEC_ID_MLP, 0xFFFFFFFF },
2739  { AV_CODEC_ID_OPUS, 0xFFFFFFFF },
2740  { AV_CODEC_ID_PCM_S16BE, 0xFFFFFFFF },
2741  { AV_CODEC_ID_PCM_S24BE, 0xFFFFFFFF },
2742  { AV_CODEC_ID_PCM_S32BE, 0xFFFFFFFF },
2743  { AV_CODEC_ID_QDMC, 0xFFFFFFFF },
2744  { AV_CODEC_ID_QDM2, 0xFFFFFFFF },
2745  { AV_CODEC_ID_RA_144, 0xFFFFFFFF },
2746  { AV_CODEC_ID_RA_288, 0xFFFFFFFF },
2747  { AV_CODEC_ID_COOK, 0xFFFFFFFF },
2748  { AV_CODEC_ID_TRUEHD, 0xFFFFFFFF },
2749  { AV_CODEC_ID_NONE, 0xFFFFFFFF }
2750 };
2751 
2753  { AV_CODEC_ID_RV10, 0xFFFFFFFF },
2754  { AV_CODEC_ID_RV20, 0xFFFFFFFF },
2755  { AV_CODEC_ID_RV30, 0xFFFFFFFF },
2756  { AV_CODEC_ID_RV40, 0xFFFFFFFF },
2757  { AV_CODEC_ID_VP9, 0xFFFFFFFF },
2758  { AV_CODEC_ID_NONE, 0xFFFFFFFF }
2759 };
2760 
2762  { AV_CODEC_ID_DVB_SUBTITLE, 0xFFFFFFFF },
2763  { AV_CODEC_ID_HDMV_PGS_SUBTITLE, 0xFFFFFFFF },
2764  { AV_CODEC_ID_NONE, 0xFFFFFFFF }
2765 };
2766 
2767 #define OFFSET(x) offsetof(MatroskaMuxContext, x)
2768 #define FLAGS AV_OPT_FLAG_ENCODING_PARAM
2769 static const AVOption options[] = {
2770  { "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 },
2771  { "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 },
2772  { "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 },
2773  { "dash", "Create a WebM file conforming to WebM DASH specification", OFFSET(is_dash), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS },
2774  { "dash_track_number", "Track number for the DASH stream", OFFSET(dash_track_number), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 127, FLAGS },
2775  { "live", "Write files assuming it is a live stream.", OFFSET(is_live), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS },
2776  { "allow_raw_vfw", "allow RAW VFW mode", OFFSET(allow_raw_vfw), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS },
2777  { "write_crc32", "write a CRC32 element inside every Level 1 element", OFFSET(write_crc), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, FLAGS },
2778  { NULL },
2779 };
2780 
2781 #if CONFIG_MATROSKA_MUXER
2782 static const AVClass matroska_class = {
2783  .class_name = "matroska muxer",
2784  .item_name = av_default_item_name,
2785  .option = options,
2786  .version = LIBAVUTIL_VERSION_INT,
2787 };
2788 
2790  .name = "matroska",
2791  .long_name = NULL_IF_CONFIG_SMALL("Matroska"),
2792  .mime_type = "video/x-matroska",
2793  .extensions = "mkv",
2794  .priv_data_size = sizeof(MatroskaMuxContext),
2795  .audio_codec = CONFIG_LIBVORBIS_ENCODER ?
2797  .video_codec = CONFIG_LIBX264_ENCODER ?
2799  .init = mkv_init,
2805  .codec_tag = (const AVCodecTag* const []){
2808  },
2809  .subtitle_codec = AV_CODEC_ID_ASS,
2810  .query_codec = mkv_query_codec,
2811  .check_bitstream = mkv_check_bitstream,
2812  .priv_class = &matroska_class,
2813 };
2814 #endif
2815 
2816 #if CONFIG_WEBM_MUXER
2817 static const AVClass webm_class = {
2818  .class_name = "webm muxer",
2819  .item_name = av_default_item_name,
2820  .option = options,
2821  .version = LIBAVUTIL_VERSION_INT,
2822 };
2823 
2825  .name = "webm",
2826  .long_name = NULL_IF_CONFIG_SMALL("WebM"),
2827  .mime_type = "video/webm",
2828  .extensions = "webm",
2829  .priv_data_size = sizeof(MatroskaMuxContext),
2830  .audio_codec = CONFIG_LIBOPUS_ENCODER ? AV_CODEC_ID_OPUS : AV_CODEC_ID_VORBIS,
2831  .video_codec = CONFIG_LIBVPX_VP9_ENCODER? AV_CODEC_ID_VP9 : AV_CODEC_ID_VP8,
2832  .subtitle_codec = AV_CODEC_ID_WEBVTT,
2833  .init = mkv_init,
2837  .check_bitstream = mkv_check_bitstream,
2840  .priv_class = &webm_class,
2841 };
2842 #endif
2843 
2844 #if CONFIG_MATROSKA_AUDIO_MUXER
2845 static const AVClass mka_class = {
2846  .class_name = "matroska audio muxer",
2847  .item_name = av_default_item_name,
2848  .option = options,
2849  .version = LIBAVUTIL_VERSION_INT,
2850 };
2852  .name = "matroska",
2853  .long_name = NULL_IF_CONFIG_SMALL("Matroska Audio"),
2854  .mime_type = "audio/x-matroska",
2855  .extensions = "mka",
2856  .priv_data_size = sizeof(MatroskaMuxContext),
2857  .audio_codec = CONFIG_LIBVORBIS_ENCODER ?
2858  AV_CODEC_ID_VORBIS : AV_CODEC_ID_AC3,
2859  .video_codec = AV_CODEC_ID_NONE,
2860  .init = mkv_init,
2864  .check_bitstream = mkv_check_bitstream,
2867  .codec_tag = (const AVCodecTag* const []){
2869  },
2870  .priv_class = &mka_class,
2871 };
2872 #endif
unsigned int nb_chapters
Number of chapters in AVChapter array.
Definition: avformat.h:1580
static int mkv_write_packet_internal(AVFormatContext *s, AVPacket *pkt, int add_cue)
Definition: matroskaenc.c:2372
int32_t pitch
Rotation around the right vector [-90, 90].
Definition: spherical.h:127
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:689
enum AVChromaLocation chroma_location
Definition: avcodec.h:3977
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:2208
const char const char void * val
Definition: avisynth_c.h:771
#define MATROSKA_ID_BLOCKADDID
Definition: matroska.h:230
#define MATROSKA_ID_TRACKDEFAULTDURATION
Definition: matroska.h:104
void avio_wl16(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:469
static void put_ebml_size_unknown(AVIOContext *pb, int bytes)
Write an EBML size meaning "unknown size".
Definition: matroskaenc.c:199
Bytestream IO Context.
Definition: avio.h:161
enum AVColorTransferCharacteristic color_trc
Definition: avcodec.h:3975
#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:330
#define MATROSKA_ID_DATEUTC
Definition: matroska.h:71
int sizebytes
how many bytes were reserved for the size
Definition: matroskaenc.c:62
#define MAX_TRACKS
Maximum number of tracks allowed in a Matroska file (with track numbers in range 1 to 126 (inclusive)...
Definition: matroskaenc.c:118
The optional first identifier line of a WebVTT cue.
Definition: avcodec.h:1302
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:2246
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:83
void ff_put_bmp_header(AVIOContext *pb, AVCodecParameters *par, int for_asf, int ignore_extradata)
Definition: riffenc.c:209
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:101
int ff_put_wav_header(AVFormatContext *s, AVIOContext *pb, AVCodecParameters *par, int flags)
Write WAVEFORMAT header structure.
Definition: riffenc.c:54
static int mkv_init(struct AVFormatContext *s)
Definition: matroskaenc.c:2682
ebml_master tracks_master
Definition: matroskaenc.c:129
#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:3123
#define MATROSKA_ID_CODECPRIVATE
Definition: matroska.h:89
av_cold int av_sha_init(AVSHA *ctx, int bits)
Initialize SHA-1 or SHA-2 hashing.
Definition: sha.c:273
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits, unsigned int pts_num, unsigned int pts_den)
Set the time base and wrapping info for a given stream.
Definition: utils.c:4849
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:2761
This side data should be associated with a video stream and contains Stereoscopic 3D information in f...
Definition: avcodec.h:1220
static int mkv_write_attachments(AVFormatContext *s)
Definition: matroskaenc.c:1727
uint64_t pts
Definition: matroskaenc.c:80
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:874
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:3887
#define MATROSKA_ID_TAGTARGETS_ATTACHUID
Definition: matroska.h:214
int num
Numerator.
Definition: rational.h:59
int size
Definition: avcodec.h:1434
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:1804
#define EBML_ID_DOCTYPEREADVERSION
Definition: matroska.h:42
#define us(width, name, range_min, range_max, subs,...)
Definition: cbs_h2645.c:261
#define MATROSKA_ID_BLOCKREFERENCE
Definition: matroska.h:237
int av_log2(unsigned v)
Definition: intmath.c:26
static int mkv_write_header(AVFormatContext *s)
Definition: matroskaenc.c:1849
#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:85
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:150
#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:3113
int64_t segment_offset
Definition: matroskaenc.c:89
const char * key
int version
Definition: avisynth_c.h:766
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:236
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:976
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:65
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
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_WB32 unsigned int_TMPL AV_WB24 unsigned int_TMPL AV_RB16
Definition: bytestream.h:87
AVDictionary * metadata
Definition: avformat.h:1312
#define MATROSKA_ID_VIDEOCOLORCHROMASITINGHORZ
Definition: matroska.h:135
mkv_track * tracks
Definition: matroskaenc.c:139
#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:3879
#define MATROSKA_ID_CHAPTERTIMEEND
Definition: matroska.h:253
enum AVColorSpace color_space
Definition: avcodec.h:3976
int64_t pos
absolute offset in the file where the master's elements start
Definition: matroskaenc.c:61
MatroskaVideoStereoModeType
Definition: matroska.h:300
Mastering display metadata (based on SMPTE-2086:2014).
Definition: avcodec.h:1328
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:2768
#define MATROSKA_ID_FILEDESC
Definition: matroska.h:243
Format I/O context.
Definition: avformat.h:1351
#define EBML_ID_CRC32
Definition: matroska.h:46
UID uid
Definition: mxfenc.c:2116
char str[32]
Definition: internal.h:50
int64_t cluster_pos
file offset of the current cluster
Definition: matroskaenc.c:133
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:2735
Public dictionary API.
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:101
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)
static int mkv_write_tag(AVFormatContext *s, AVDictionary *m, unsigned int elementid, unsigned int uid, ebml_master *tags)
Definition: matroskaenc.c:1606
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:1991
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:182
#define OPUS_SEEK_PREROLL
Seek preroll value for opus.
Definition: matroskaenc.c:180
uint32_t flags
Definition: wv.h:40
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:67
int id
unique ID to identify the chapter
Definition: avformat.h:1309
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
Definition: avcodec.h:1451
#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:807
#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:980
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:5443
#define MATROSKA_ID_BLOCKMORE
Definition: matroska.h:229
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_RB32
Definition: bytestream.h:87
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1419
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:4016
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:1482
uint8_t * data
Definition: avcodec.h:1433
static double av_q2d(AVRational a)
Convert an AVRational to a double.
Definition: rational.h:104
static int64_t mkv_write_cues(AVFormatContext *s, mkv_cues *cues, mkv_track *tracks, int num_tracks)
Definition: matroskaenc.c:577
#define MATROSKA_ID_VIDEODISPLAYWIDTH
Definition: matroska.h:112
int ff_isom_write_av1c(AVIOContext *pb, const uint8_t *buf, int size)
Writes AV1 extradata (Sequence Header and Metadata OBUs) to the provided AVIOContext.
Definition: av1.c:300
#define MATROSKA_ID_BLOCKADDITIONS
Definition: matroska.h:228
uint32_t tag
Definition: movenc.c:1483
Not part of ABI.
Definition: pixfmt.h:513
#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:1377
#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:331
int64_t ts_offset
Definition: matroskaenc.c:100
Video is not stereoscopic (and metadata has to be there).
Definition: stereo3d.h:55
ptrdiff_t size
Definition: opengl_enc.c:101
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
Definition: avio.h: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
#define flags(name, subs,...)
Definition: cbs_h2645.c:263
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:1499
void * av_realloc_array(void *ptr, size_t nmemb, size_t size)
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:3989
static void put_ebml_num(AVIOContext *pb, uint64_t num, int bytes)
Write a number in EBML variable length format.
Definition: matroskaenc.c:223
#define av_log(a,...)
int has_cue
Definition: matroskaenc.c:96
#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:465
int64_t segment_offset
the file offset to the beginning of the segment
Definition: matroskaenc.c:72
struct AVOutputFormat * oformat
The output container format.
Definition: avformat.h:1370
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:1465
#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:130
static int mkv_write_simpletag(AVIOContext *pb, AVDictionaryEntry *t)
Definition: matroskaenc.c:1533
#define MATROSKA_ID_VIDEOSTEREOMODE
Definition: matroska.h:123
uint32_t chapter_id_offset
Definition: matroskaenc.c:156
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:5649
Content light level needed by to transmit HDR over HDMI (CTA-861.3).
AVPacket cur_audio_pkt
Definition: matroskaenc.c:142
AVCodecID
Identify the syntax and semantics of the bitstream.
Definition: avcodec.h:215
static int mkv_write_tags(AVFormatContext *s)
Definition: matroskaenc.c:1641
#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:2012
#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:1503
AVDictionary * metadata
Metadata that applies to the whole file.
Definition: avformat.h:1591
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:174
#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:721
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:376
#define AVERROR(e)
Definition: error.h:43
unsigned int elementid
Definition: matroskaenc.c:66
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:73
#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:3974
#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:450
AVIOContext * tracks_bc
Definition: matroskaenc.c:128
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:2041
enum AVMediaType codec_type
General type of the encoded data.
Definition: avcodec.h:3883
static int ebml_num_size(uint64_t num)
Calculate how many bytes are needed to represent a given number in EBML.
Definition: matroskaenc.c:209
int write_dts
Definition: matroskaenc.c:95
int final
Definition: wv.h:43
AVChapter ** chapters
Definition: avformat.h:1581
enum AVCodecID id
Definition: matroska.h:354
enum AVPacketSideDataType type
Definition: avcodec.h:1379
enum AVMediaType avcodec_get_type(enum AVCodecID codec_id)
Get the type of the given codec.
Definition: codec_desc.c:3182
static int mkv_write_chapters(AVFormatContext *s)
Definition: matroskaenc.c:1475
static int mkv_check_tag(AVDictionary *m, unsigned int elementid)
Definition: matroskaenc.c:1630
#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
const AVCodecTag ff_codec_wav_tags[]
Definition: riff.c:476
#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:444
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:2001
int64_t filepos
Definition: matroskaenc.c:71
#define fail()
Definition: checkasm.h:117
int flags
A combination of AV_PKT_FLAG values.
Definition: avcodec.h:1439
int extradata_size
Size of the extradata content in bytes.
Definition: avcodec.h:3905
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:1407
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:3286
#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:90
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:665
static void mkv_free(MatroskaMuxContext *mkv)
Free the members allocated in the mux context.
Definition: matroskaenc.c:398
#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:493
static int mkv_write_native_codecprivate(AVFormatContext *s, AVIOContext *pb, AVCodecParameters *par, AVIOContext *dyn_cp)
Definition: matroskaenc.c:754
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:1825
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:1334
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
int(* filler)(InterplayACMContext *s, unsigned ind, unsigned col)
Definition: interplayacm.c:407
static int mkv_check_new_extra_data(AVFormatContext *s, AVPacket *pkt)
Definition: matroskaenc.c:2264
int ff_flac_write_header(AVIOContext *pb, uint8_t *extradata, int extradata_size, int last_block)
#define s(width, name)
Definition: cbs_vp9.c:257
int avoid_negative_ts
Avoid negative timestamps during muxing.
Definition: avformat.h:1682
#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
int32_t yaw
Rotation around the up vector [-180, 180].
Definition: spherical.h:126
AVDictionary * metadata
Definition: avformat.h:938
enum AVCodecID codec_id
Definition: vaapi_decode.c:362
enum AVColorRange color_range
Video only.
Definition: avcodec.h:3973
AVIOContext * info_bc
Definition: matroskaenc.c:126
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:2767
#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:1135
static void end_ebml_master_crc32(AVIOContext *pb, AVIOContext **dyn_cp, MatroskaMuxContext *mkv, ebml_master master)
Definition: matroskaenc.c:349
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:554
static void put_ebml_float(AVIOContext *pb, unsigned int elementid, double val)
Definition: matroskaenc.c:268
Stream structure.
Definition: avformat.h:874
#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:283
int64_t end
chapter start/end time in time_base units
Definition: avformat.h:1311
Content light level (based on CTA-861.3).
Definition: avcodec.h:1341
static int mkv_write_track(AVFormatContext *s, MatroskaMuxContext *mkv, int i, AVIOContext *pb, int default_stream_exists)
Definition: matroskaenc.c:1178
#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:1161
#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
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_WB32 unsigned int_TMPL AV_RB24
Definition: bytestream.h:87
int64_t sample_rate_offset
Definition: matroskaenc.c:98
#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:1393
int64_t codecpriv_offset
Definition: matroskaenc.c:99
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:109
uint32_t fileuid
Definition: matroskaenc.c:105
#define MATROSKA_ID_TAGLANG
Definition: matroska.h:206
static int mkv_check_tag_name(const char *name, unsigned int elementid)
Definition: matroskaenc.c:1592
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
int ff_av1_filter_obus_buf(const uint8_t *buf, uint8_t **out, int *size)
Filter out AV1 OBUs not meant to be present in ISOBMFF sample data and write the resulting bitstream ...
Definition: av1.c:60
#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:1297
GLint GLenum type
Definition: opengl_enc.c:105
#define MATROSKA_ID_TRACKNAME
Definition: matroska.h:96
int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
Set the given entry in *pm, overwriting an existing entry.
Definition: dict.c:70
#define MATROSKA_ID_SEEKENTRY
Definition: matroska.h:217
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:2582
#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:177
#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:1443
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:242
#define MATROSKA_ID_CUEDURATION
Definition: matroska.h:198
#define MATROSKA_ID_CUETIME
Definition: matroska.h:191
Not part of ABI.
Definition: pixfmt.h:479
AVFieldOrder
Definition: avcodec.h:1499
Recommmends skipping the specified number of samples.
Definition: avcodec.h:1262
AVIOContext * dyn_bc
Definition: matroskaenc.c:123
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:135
#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:2052
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:187
#define MATROSKA_ID_VIDEOPROJECTION
Definition: matroska.h:156
#define MATROSKA_ID_VIDEOCOLORMASTERINGMETA
Definition: matroska.h:144
misc parsing utilities
#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:255
#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:162
#define MATROSKA_ID_CHAPTERDISPLAY
Definition: matroska.h:254
static int put_xiph_codecpriv(AVFormatContext *s, AVIOContext *pb, AVCodecParameters *par)
Definition: matroskaenc.c:637
int bits_per_raw_sample
This is the number of valid bits in each output sample.
Definition: avcodec.h:3942
#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:2752
static int put_flac_codecpriv(AVFormatContext *s, AVIOContext *pb, AVCodecParameters *par)
Definition: matroskaenc.c:674
#define MATROSKA_ID_VIDEOFIELDORDER
Definition: matroska.h:122
int64_t start
Definition: avformat.h:1311
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:3997
#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:2550
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_RB64
Definition: bytestream.h:87
Main libavformat public API header.
static int mkv_check_bitstream(struct AVFormatContext *s, const AVPacket *pkt)
Definition: matroskaenc.c:2720
attribute_deprecated int64_t convergence_duration
Definition: avcodec.h:1462
#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:159
#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:275
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:2105
static int mkv_write_flush_packet(AVFormatContext *s, AVPacket *pkt)
Definition: matroskaenc.c:2529
int disposition
AV_DISPOSITION_* bit field.
Definition: avformat.h:927
static void put_ebml_void(AVIOContext *pb, uint64_t size)
Write a void element of a given size.
Definition: matroskaenc.c:295
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:1310
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:1308
#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:140
#define AVFMT_VARIABLE_FPS
Format allows variable fps.
Definition: avformat.h:472
ebml_master cluster
Definition: matroskaenc.c:132
#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:75
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:1080
#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:5512
static int mkv_write_tag_targets(AVFormatContext *s, unsigned int elementid, unsigned int uid, ebml_master *tags, ebml_master *tag)
Definition: matroskaenc.c:1567
void * priv_data
Format private data.
Definition: avformat.h:1379
#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:3929
int64_t relative_pos
relative offset from the position of the cluster containing the block
Definition: matroskaenc.c:84
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
Definition: avcodec.h:3901
#define MATROSKA_ID_VIDEOCOLORMAXFALL
Definition: matroska.h:142
#define MATROSKA_ID_VIDEODISPLAYUNIT
Definition: matroska.h:120
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed...
Definition: avcodec.h:1432
static const AVOption options[]
Definition: matroskaenc.c:2769
#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:1466
#define MATROSKA_ID_CHAPSTRING
Definition: matroska.h:255
int sample_rate
Definition: matroskaenc.c:97
#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:113
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:1021
ebml_master info
Definition: matroskaenc.c:127
uint32_t codec_tag
Additional information about the codec (corresponds to the AVI FOURCC).
Definition: avcodec.h:3891
#define MODE_WEBM
Definition: matroskaenc.c:114
static int mkv_write_packet(AVFormatContext *s, AVPacket *pkt)
Definition: matroskaenc.c:2454
ebml_master tags
Definition: matroskaenc.c:125
#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:170
static mkv_cues * mkv_start_cues(int64_t segment_offset)
Definition: matroskaenc.c:544
int stream_index
Definition: avcodec.h:1435
int num_entries
Definition: matroskaenc.c:91
#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:903
static void end_ebml_master(AVIOContext *pb, ebml_master master)
Definition: matroskaenc.c:321
int64_t segment_offset
Definition: matroskaenc.c:131
#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:312
mkv_seekhead * main_seekhead
Definition: matroskaenc.c:137
enum AVCodecID id
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_RL32
Definition: bytestream.h:87
unsigned MaxFALL
Max average light level per frame (cd/m^2).
This structure stores compressed data.
Definition: avcodec.h:1410
int64_t * stream_durations
Definition: matroskaenc.c:161
static void mkv_write_field_order(AVIOContext *pb, int mode, enum AVFieldOrder field_order)
Definition: matroskaenc.c:1041
mode
Use these values in ebur128_init (or'ed).
Definition: ebur128.h:83
#define MATROSKA_ID_VIDEOCOLOR_RY
Definition: matroska.h:146
uint32_t blocksize
Definition: wv.h:35
static int mkv_query_codec(enum AVCodecID codec_id, int std_compliance)
Definition: matroskaenc.c:2665
static void put_xiph_size(AVIOContext *pb, int size)
Definition: matroskaenc.c:389
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: avcodec.h:1426
Not part of ABI.
Definition: pixfmt.h:503
#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
AVIOContext * tags_bc
Definition: matroskaenc.c:124
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
uint8_t pi<< 24) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_U8,(uint64_t)((*(constuint8_t *) pi-0x80U))<< 56) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8,(*(constuint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8,(*(constuint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16,(*(constint16_t *) pi >>8)+0x80) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S16,(uint64_t)(*(constint16_t *) pi)<< 48) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16,*(constint16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16,*(constint16_t *) pi *(1.0/(1<< 15))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32,(*(constint32_t *) pi >>24)+0x80) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S32,(uint64_t)(*(constint32_t *) pi)<< 32) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32,*(constint32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32,*(constint32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S64,(*(constint64_t *) pi >>56)+0x80) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S64,*(constint64_t *) pi *(1.0f/(INT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S64,*(constint64_t *) pi *(1.0/(INT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, av_clip_uint8(lrintf(*(constfloat *) pi *(1<< 7))+0x80)) CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, av_clip_int16(lrintf(*(constfloat *) pi *(1<< 15)))) CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, av_clipl_int32(llrintf(*(constfloat *) pi *(1U<< 31)))) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_FLT, llrintf(*(constfloat *) pi *(INT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, av_clip_uint8(lrint(*(constdouble *) pi *(1<< 7))+0x80)) CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, av_clip_int16(lrint(*(constdouble *) pi *(1<< 15)))) CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, av_clipl_int32(llrint(*(constdouble *) pi *(1U<< 31)))) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_DBL, llrint(*(constdouble *) pi *(INT64_C(1)<< 63)))#defineFMT_PAIR_FUNC(out, in) staticconv_func_type *constfmt_pair_to_conv_functions[AV_SAMPLE_FMT_NB *AV_SAMPLE_FMT_NB]={FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S64),};staticvoidcpy1(uint8_t **dst, constuint8_t **src, intlen){memcpy(*dst,*src, len);}staticvoidcpy2(uint8_t **dst, constuint8_t **src, intlen){memcpy(*dst,*src, 2 *len);}staticvoidcpy4(uint8_t **dst, constuint8_t **src, intlen){memcpy(*dst,*src, 4 *len);}staticvoidcpy8(uint8_t **dst, constuint8_t **src, intlen){memcpy(*dst,*src, 8 *len);}AudioConvert *swri_audio_convert_alloc(enumAVSampleFormatout_fmt, enumAVSampleFormatin_fmt, intchannels, constint *ch_map, intflags){AudioConvert *ctx;conv_func_type *f=fmt_pair_to_conv_functions[av_get_packed_sample_fmt(out_fmt)+AV_SAMPLE_FMT_NB *av_get_packed_sample_fmt(in_fmt)];if(!f) returnNULL;ctx=av_mallocz(sizeof(*ctx));if(!ctx) returnNULL;if(channels==1){in_fmt=av_get_planar_sample_fmt(in_fmt);out_fmt=av_get_planar_sample_fmt(out_fmt);}ctx->channels=channels;ctx->conv_f=f;ctx->ch_map=ch_map;if(in_fmt==AV_SAMPLE_FMT_U8||in_fmt==AV_SAMPLE_FMT_U8P) memset(ctx->silence, 0x80, sizeof(ctx->silence));if(out_fmt==in_fmt &&!ch_map){switch(av_get_bytes_per_sample(in_fmt)){case1:ctx->simd_f=cpy1;break;case2:ctx->simd_f=cpy2;break;case4:ctx->simd_f=cpy4;break;case8:ctx->simd_f=cpy8;break;}}if(HAVE_X86ASM &&1) swri_audio_convert_init_x86(ctx, out_fmt, in_fmt, channels);if(ARCH_ARM) swri_audio_convert_init_arm(ctx, out_fmt, in_fmt, channels);if(ARCH_AARCH64) swri_audio_convert_init_aarch64(ctx, out_fmt, in_fmt, channels);returnctx;}voidswri_audio_convert_free(AudioConvert **ctx){av_freep(ctx);}intswri_audio_convert(AudioConvert *ctx, AudioData *out, AudioData *in, intlen){intch;intoff=0;constintos=(out->planar?1:out->ch_count)*out->bps;unsignedmisaligned=0;av_assert0(ctx->channels==out->ch_count);if(ctx->in_simd_align_mask){intplanes=in->planar?in->ch_count:1;unsignedm=0;for(ch=0;ch< planes;ch++) m|=(intptr_t) in->ch[ch];misaligned|=m &ctx->in_simd_align_mask;}if(ctx->out_simd_align_mask){intplanes=out->planar?out->ch_count:1;unsignedm=0;for(ch=0;ch< planes;ch++) m|=(intptr_t) out->ch[ch];misaligned|=m &ctx->out_simd_align_mask;}if(ctx->simd_f &&!ctx->ch_map &&!misaligned){off=len &~15;av_assert1(off >=0);av_assert1(off<=len);av_assert2(ctx->channels==SWR_CH_MAX||!in->ch[ctx->channels]);if(off >0){if(out->planar==in->planar){intplanes=out->planar?out->ch_count:1;for(ch=0;ch< planes;ch++){ctx->simd_f(out-> ch ch
Definition: audioconvert.c:56
#define 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:964
void * av_mallocz_array(size_t nmemb, size_t size)
Definition: mem.c:191
const char * name
Definition: opengl_enc.c:103
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