FFmpeg  2.1.1
mov.c
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1 /*
2  * MOV demuxer
3  * Copyright (c) 2001 Fabrice Bellard
4  * Copyright (c) 2009 Baptiste Coudurier <baptiste dot coudurier at gmail dot com>
5  *
6  * first version by Francois Revol <revol@free.fr>
7  * seek function by Gael Chardon <gael.dev@4now.net>
8  *
9  * This file is part of FFmpeg.
10  *
11  * FFmpeg is free software; you can redistribute it and/or
12  * modify it under the terms of the GNU Lesser General Public
13  * License as published by the Free Software Foundation; either
14  * version 2.1 of the License, or (at your option) any later version.
15  *
16  * FFmpeg is distributed in the hope that it will be useful,
17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19  * Lesser General Public License for more details.
20  *
21  * You should have received a copy of the GNU Lesser General Public
22  * License along with FFmpeg; if not, write to the Free Software
23  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24  */
25 
26 #include <limits.h>
27 
28 //#define MOV_EXPORT_ALL_METADATA
29 
30 #include "libavutil/attributes.h"
31 #include "libavutil/channel_layout.h"
32 #include "libavutil/intreadwrite.h"
33 #include "libavutil/intfloat.h"
34 #include "libavutil/mathematics.h"
35 #include "libavutil/avstring.h"
36 #include "libavutil/dict.h"
37 #include "libavutil/opt.h"
38 #include "libavutil/timecode.h"
39 #include "libavcodec/ac3tab.h"
40 #include "avformat.h"
41 #include "internal.h"
42 #include "avio_internal.h"
43 #include "riff.h"
44 #include "isom.h"
45 #include "libavcodec/get_bits.h"
46 #include "id3v1.h"
47 #include "mov_chan.h"
48 
49 #if CONFIG_ZLIB
50 #include <zlib.h>
51 #endif
52 
53 #include "qtpalette.h"
54 
55 
56 #undef NDEBUG
57 #include <assert.h>
58 
59 /* those functions parse an atom */
60 /* links atom IDs to parse functions */
61 typedef struct MOVParseTableEntry {
62  uint32_t type;
63  int (*parse)(MOVContext *ctx, AVIOContext *pb, MOVAtom atom);
65 
66 static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom);
67 
69  unsigned len, const char *key)
70 {
71  char buf[16];
72 
73  short current, total = 0;
74  avio_rb16(pb); // unknown
75  current = avio_rb16(pb);
76  if (len >= 6)
77  total = avio_rb16(pb);
78  if (!total)
79  snprintf(buf, sizeof(buf), "%d", current);
80  else
81  snprintf(buf, sizeof(buf), "%d/%d", current, total);
82  av_dict_set(&c->fc->metadata, key, buf, 0);
83 
84  return 0;
85 }
86 
88  unsigned len, const char *key)
89 {
90  char buf[16];
91 
92  /* bypass padding bytes */
93  avio_r8(pb);
94  avio_r8(pb);
95  avio_r8(pb);
96 
97  snprintf(buf, sizeof(buf), "%d", avio_r8(pb));
98  av_dict_set(&c->fc->metadata, key, buf, 0);
99 
100  return 0;
101 }
102 
104  unsigned len, const char *key)
105 {
106  char buf[16];
107 
108  snprintf(buf, sizeof(buf), "%d", avio_r8(pb));
109  av_dict_set(&c->fc->metadata, key, buf, 0);
110 
111  return 0;
112 }
113 
115  unsigned len, const char *key)
116 {
117  short genre;
118  char buf[20];
119 
120  avio_r8(pb); // unknown
121 
122  genre = avio_r8(pb);
123  if (genre < 1 || genre > ID3v1_GENRE_MAX)
124  return 0;
125  snprintf(buf, sizeof(buf), "%s", ff_id3v1_genre_str[genre-1]);
126  av_dict_set(&c->fc->metadata, key, buf, 0);
127 
128  return 0;
129 }
130 
132 {
133  char key[1024]={0}, data[1024]={0};
134  int i;
135  AVStream *st;
136  MOVStreamContext *sc;
137 
138  if (c->fc->nb_streams < 1)
139  return 0;
140  st = c->fc->streams[c->fc->nb_streams-1];
141  sc = st->priv_data;
142 
143  if (atom.size <= 8) return 0;
144 
145  for (i = 0; i < 3; i++) { // Parse up to three sub-atoms looking for name and data.
146  int data_size = avio_rb32(pb);
147  int tag = avio_rl32(pb);
148  int str_size = 0, skip_size = 0;
149  char *target = NULL;
150 
151  switch (tag) {
152  case MKTAG('n','a','m','e'):
153  avio_rb32(pb); // version/flags
154  str_size = skip_size = data_size - 12;
155  atom.size -= 12;
156  target = key;
157  break;
158  case MKTAG('d','a','t','a'):
159  avio_rb32(pb); // version/flags
160  avio_rb32(pb); // reserved (zero)
161  str_size = skip_size = data_size - 16;
162  atom.size -= 16;
163  target = data;
164  break;
165  default:
166  skip_size = data_size - 8;
167  str_size = 0;
168  break;
169  }
170 
171  if (target) {
172  str_size = FFMIN3(sizeof(data)-1, str_size, atom.size);
173  avio_read(pb, target, str_size);
174  target[str_size] = 0;
175  }
176  atom.size -= skip_size;
177 
178  // If we didn't read the full data chunk for the sub-atom, skip to the end of it.
179  if (skip_size > str_size) avio_skip(pb, skip_size - str_size);
180  }
181 
182  if (*key && *data) {
183  if (strcmp(key, "iTunSMPB") == 0) {
184  int priming, remainder, samples;
185  if(sscanf(data, "%*X %X %X %X", &priming, &remainder, &samples) == 3){
186  if(priming>0 && priming<16384)
187  sc->start_pad = priming;
188  return 1;
189  }
190  }
191  if (strcmp(key, "cdec") == 0) {
192 // av_dict_set(&st->metadata, key, data, 0);
193  return 1;
194  }
195  }
196  return 0;
197 }
198 
199 static const uint32_t mac_to_unicode[128] = {
200  0x00C4,0x00C5,0x00C7,0x00C9,0x00D1,0x00D6,0x00DC,0x00E1,
201  0x00E0,0x00E2,0x00E4,0x00E3,0x00E5,0x00E7,0x00E9,0x00E8,
202  0x00EA,0x00EB,0x00ED,0x00EC,0x00EE,0x00EF,0x00F1,0x00F3,
203  0x00F2,0x00F4,0x00F6,0x00F5,0x00FA,0x00F9,0x00FB,0x00FC,
204  0x2020,0x00B0,0x00A2,0x00A3,0x00A7,0x2022,0x00B6,0x00DF,
205  0x00AE,0x00A9,0x2122,0x00B4,0x00A8,0x2260,0x00C6,0x00D8,
206  0x221E,0x00B1,0x2264,0x2265,0x00A5,0x00B5,0x2202,0x2211,
207  0x220F,0x03C0,0x222B,0x00AA,0x00BA,0x03A9,0x00E6,0x00F8,
208  0x00BF,0x00A1,0x00AC,0x221A,0x0192,0x2248,0x2206,0x00AB,
209  0x00BB,0x2026,0x00A0,0x00C0,0x00C3,0x00D5,0x0152,0x0153,
210  0x2013,0x2014,0x201C,0x201D,0x2018,0x2019,0x00F7,0x25CA,
211  0x00FF,0x0178,0x2044,0x20AC,0x2039,0x203A,0xFB01,0xFB02,
212  0x2021,0x00B7,0x201A,0x201E,0x2030,0x00C2,0x00CA,0x00C1,
213  0x00CB,0x00C8,0x00CD,0x00CE,0x00CF,0x00CC,0x00D3,0x00D4,
214  0xF8FF,0x00D2,0x00DA,0x00DB,0x00D9,0x0131,0x02C6,0x02DC,
215  0x00AF,0x02D8,0x02D9,0x02DA,0x00B8,0x02DD,0x02DB,0x02C7,
216 };
217 
219  char *dst, int dstlen)
220 {
221  char *p = dst;
222  char *end = dst+dstlen-1;
223  int i;
224 
225  for (i = 0; i < len; i++) {
226  uint8_t t, c = avio_r8(pb);
227  if (c < 0x80 && p < end)
228  *p++ = c;
229  else if (p < end)
230  PUT_UTF8(mac_to_unicode[c-0x80], t, if (p < end) *p++ = t;);
231  }
232  *p = 0;
233  return p - dst;
234 }
235 
236 static int mov_read_covr(MOVContext *c, AVIOContext *pb, int type, int len)
237 {
238  AVPacket pkt;
239  AVStream *st;
240  MOVStreamContext *sc;
241  enum AVCodecID id;
242  int ret;
243 
244  switch (type) {
245  case 0xd: id = AV_CODEC_ID_MJPEG; break;
246  case 0xe: id = AV_CODEC_ID_PNG; break;
247  case 0x1b: id = AV_CODEC_ID_BMP; break;
248  default:
249  av_log(c->fc, AV_LOG_WARNING, "Unknown cover type: 0x%x.\n", type);
250  avio_skip(pb, len);
251  return 0;
252  }
253 
254  st = avformat_new_stream(c->fc, NULL);
255  if (!st)
256  return AVERROR(ENOMEM);
257  sc = av_mallocz(sizeof(*sc));
258  if (!sc)
259  return AVERROR(ENOMEM);
260  st->priv_data = sc;
261 
262  ret = av_get_packet(pb, &pkt, len);
263  if (ret < 0)
264  return ret;
265 
267 
268  st->attached_pic = pkt;
269  st->attached_pic.stream_index = st->index;
271 
273  st->codec->codec_id = id;
274 
275  return 0;
276 }
277 
279  unsigned len, const char *key)
280 {
281  char *value = av_malloc(len + 1);
282  if (!value)
283  return AVERROR(ENOMEM);
284  avio_read(pb, value, len);
285  value[len] = 0;
286  return av_dict_set(&c->fc->metadata, key, value, AV_DICT_DONT_STRDUP_VAL);
287 }
288 
290 {
291 #ifdef MOV_EXPORT_ALL_METADATA
292  char tmp_key[5];
293 #endif
294  char str[1024], key2[16], language[4] = {0};
295  const char *key = NULL;
296  uint16_t langcode = 0;
297  uint32_t data_type = 0, str_size;
298  int (*parse)(MOVContext*, AVIOContext*, unsigned, const char*) = NULL;
299 
300  if (c->itunes_metadata && atom.type == MKTAG('-','-','-','-'))
301  return mov_read_custom_metadata(c, pb, atom);
302 
303  switch (atom.type) {
304  case MKTAG(0xa9,'n','a','m'): key = "title"; break;
305  case MKTAG(0xa9,'a','u','t'):
306  case MKTAG(0xa9,'A','R','T'): key = "artist"; break;
307  case MKTAG( 'a','A','R','T'): key = "album_artist"; break;
308  case MKTAG(0xa9,'w','r','t'): key = "composer"; break;
309  case MKTAG( 'c','p','r','t'):
310  case MKTAG(0xa9,'c','p','y'): key = "copyright"; break;
311  case MKTAG(0xa9,'g','r','p'): key = "grouping"; break;
312  case MKTAG(0xa9,'l','y','r'): key = "lyrics"; break;
313  case MKTAG(0xa9,'c','m','t'):
314  case MKTAG(0xa9,'i','n','f'): key = "comment"; break;
315  case MKTAG(0xa9,'a','l','b'): key = "album"; break;
316  case MKTAG(0xa9,'d','a','y'): key = "date"; break;
317  case MKTAG(0xa9,'g','e','n'): key = "genre"; break;
318  case MKTAG( 'g','n','r','e'): key = "genre";
319  parse = mov_metadata_gnre; break;
320  case MKTAG(0xa9,'t','o','o'):
321  case MKTAG(0xa9,'s','w','r'): key = "encoder"; break;
322  case MKTAG(0xa9,'e','n','c'): key = "encoder"; break;
323  case MKTAG(0xa9,'m','a','k'): key = "make"; break;
324  case MKTAG(0xa9,'m','o','d'): key = "model"; break;
325  case MKTAG(0xa9,'x','y','z'): key = "location"; break;
326  case MKTAG( 'd','e','s','c'): key = "description";break;
327  case MKTAG( 'l','d','e','s'): key = "synopsis"; break;
328  case MKTAG( 't','v','s','h'): key = "show"; break;
329  case MKTAG( 't','v','e','n'): key = "episode_id";break;
330  case MKTAG( 't','v','n','n'): key = "network"; break;
331  case MKTAG( 't','r','k','n'): key = "track";
333  case MKTAG( 'd','i','s','k'): key = "disc";
335  case MKTAG( 't','v','e','s'): key = "episode_sort";
337  case MKTAG( 't','v','s','n'): key = "season_number";
339  case MKTAG( 's','t','i','k'): key = "media_type";
341  case MKTAG( 'h','d','v','d'): key = "hd_video";
343  case MKTAG( 'p','g','a','p'): key = "gapless_playback";
345  case MKTAG( '@','P','R','M'):
346  return mov_metadata_raw(c, pb, atom.size, "premiere_version");
347  case MKTAG( '@','P','R','Q'):
348  return mov_metadata_raw(c, pb, atom.size, "quicktime_version");
349  }
350 
351  if (c->itunes_metadata && atom.size > 8) {
352  int data_size = avio_rb32(pb);
353  int tag = avio_rl32(pb);
354  if (tag == MKTAG('d','a','t','a')) {
355  data_type = avio_rb32(pb); // type
356  avio_rb32(pb); // unknown
357  str_size = data_size - 16;
358  atom.size -= 16;
359 
360  if (atom.type == MKTAG('c', 'o', 'v', 'r')) {
361  int ret = mov_read_covr(c, pb, data_type, str_size);
362  if (ret < 0) {
363  av_log(c->fc, AV_LOG_ERROR, "Error parsing cover art.\n");
364  return ret;
365  }
366  }
367  } else return 0;
368  } else if (atom.size > 4 && key && !c->itunes_metadata) {
369  str_size = avio_rb16(pb); // string length
370  langcode = avio_rb16(pb);
371  ff_mov_lang_to_iso639(langcode, language);
372  atom.size -= 4;
373  } else
374  str_size = atom.size;
375 
376 #ifdef MOV_EXPORT_ALL_METADATA
377  if (!key) {
378  snprintf(tmp_key, 5, "%.4s", (char*)&atom.type);
379  key = tmp_key;
380  }
381 #endif
382 
383  if (!key)
384  return 0;
385  if (atom.size < 0)
386  return AVERROR_INVALIDDATA;
387 
388  str_size = FFMIN3(sizeof(str)-1, str_size, atom.size);
389 
390  if (parse)
391  parse(c, pb, str_size, key);
392  else {
393  if (data_type == 3 || (data_type == 0 && (langcode < 0x400 || langcode == 0x7fff))) { // MAC Encoded
394  mov_read_mac_string(c, pb, str_size, str, sizeof(str));
395  } else {
396  avio_read(pb, str, str_size);
397  str[str_size] = 0;
398  }
399  av_dict_set(&c->fc->metadata, key, str, 0);
400  if (*language && strcmp(language, "und")) {
401  snprintf(key2, sizeof(key2), "%s-%s", key, language);
402  av_dict_set(&c->fc->metadata, key2, str, 0);
403  }
404  }
405  av_dlog(c->fc, "lang \"%3s\" ", language);
406  av_dlog(c->fc, "tag \"%s\" value \"%s\" atom \"%.4s\" %d %"PRId64"\n",
407  key, str, (char*)&atom.type, str_size, atom.size);
408 
409  return 0;
410 }
411 
413 {
414  int64_t start;
415  int i, nb_chapters, str_len, version;
416  char str[256+1];
417 
418  if ((atom.size -= 5) < 0)
419  return 0;
420 
421  version = avio_r8(pb);
422  avio_rb24(pb);
423  if (version)
424  avio_rb32(pb); // ???
425  nb_chapters = avio_r8(pb);
426 
427  for (i = 0; i < nb_chapters; i++) {
428  if (atom.size < 9)
429  return 0;
430 
431  start = avio_rb64(pb);
432  str_len = avio_r8(pb);
433 
434  if ((atom.size -= 9+str_len) < 0)
435  return 0;
436 
437  avio_read(pb, str, str_len);
438  str[str_len] = 0;
439  avpriv_new_chapter(c->fc, i, (AVRational){1,10000000}, start, AV_NOPTS_VALUE, str);
440  }
441  return 0;
442 }
443 
444 #define MIN_DATA_ENTRY_BOX_SIZE 12
446 {
447  AVStream *st;
448  MOVStreamContext *sc;
449  int entries, i, j;
450 
451  if (c->fc->nb_streams < 1)
452  return 0;
453  st = c->fc->streams[c->fc->nb_streams-1];
454  sc = st->priv_data;
455 
456  avio_rb32(pb); // version + flags
457  entries = avio_rb32(pb);
458  if (entries > (atom.size - 1) / MIN_DATA_ENTRY_BOX_SIZE + 1 ||
459  entries >= UINT_MAX / sizeof(*sc->drefs))
460  return AVERROR_INVALIDDATA;
461  av_free(sc->drefs);
462  sc->drefs_count = 0;
463  sc->drefs = av_mallocz(entries * sizeof(*sc->drefs));
464  if (!sc->drefs)
465  return AVERROR(ENOMEM);
466  sc->drefs_count = entries;
467 
468  for (i = 0; i < sc->drefs_count; i++) {
469  MOVDref *dref = &sc->drefs[i];
470  uint32_t size = avio_rb32(pb);
471  int64_t next = avio_tell(pb) + size - 4;
472 
473  if (size < 12)
474  return AVERROR_INVALIDDATA;
475 
476  dref->type = avio_rl32(pb);
477  avio_rb32(pb); // version + flags
478  av_dlog(c->fc, "type %.4s size %d\n", (char*)&dref->type, size);
479 
480  if (dref->type == MKTAG('a','l','i','s') && size > 150) {
481  /* macintosh alias record */
482  uint16_t volume_len, len;
483  int16_t type;
484 
485  avio_skip(pb, 10);
486 
487  volume_len = avio_r8(pb);
488  volume_len = FFMIN(volume_len, 27);
489  avio_read(pb, dref->volume, 27);
490  dref->volume[volume_len] = 0;
491  av_log(c->fc, AV_LOG_DEBUG, "volume %s, len %d\n", dref->volume, volume_len);
492 
493  avio_skip(pb, 12);
494 
495  len = avio_r8(pb);
496  len = FFMIN(len, 63);
497  avio_read(pb, dref->filename, 63);
498  dref->filename[len] = 0;
499  av_log(c->fc, AV_LOG_DEBUG, "filename %s, len %d\n", dref->filename, len);
500 
501  avio_skip(pb, 16);
502 
503  /* read next level up_from_alias/down_to_target */
504  dref->nlvl_from = avio_rb16(pb);
505  dref->nlvl_to = avio_rb16(pb);
506  av_log(c->fc, AV_LOG_DEBUG, "nlvl from %d, nlvl to %d\n",
507  dref->nlvl_from, dref->nlvl_to);
508 
509  avio_skip(pb, 16);
510 
511  for (type = 0; type != -1 && avio_tell(pb) < next; ) {
512  if(url_feof(pb))
513  return AVERROR_EOF;
514  type = avio_rb16(pb);
515  len = avio_rb16(pb);
516  av_log(c->fc, AV_LOG_DEBUG, "type %d, len %d\n", type, len);
517  if (len&1)
518  len += 1;
519  if (type == 2) { // absolute path
520  av_free(dref->path);
521  dref->path = av_mallocz(len+1);
522  if (!dref->path)
523  return AVERROR(ENOMEM);
524  avio_read(pb, dref->path, len);
525  if (len > volume_len && !strncmp(dref->path, dref->volume, volume_len)) {
526  len -= volume_len;
527  memmove(dref->path, dref->path+volume_len, len);
528  dref->path[len] = 0;
529  }
530  for (j = 0; j < len; j++)
531  if (dref->path[j] == ':')
532  dref->path[j] = '/';
533  av_log(c->fc, AV_LOG_DEBUG, "path %s\n", dref->path);
534  } else if (type == 0) { // directory name
535  av_free(dref->dir);
536  dref->dir = av_malloc(len+1);
537  if (!dref->dir)
538  return AVERROR(ENOMEM);
539  avio_read(pb, dref->dir, len);
540  dref->dir[len] = 0;
541  for (j = 0; j < len; j++)
542  if (dref->dir[j] == ':')
543  dref->dir[j] = '/';
544  av_log(c->fc, AV_LOG_DEBUG, "dir %s\n", dref->dir);
545  } else
546  avio_skip(pb, len);
547  }
548  }
549  avio_seek(pb, next, SEEK_SET);
550  }
551  return 0;
552 }
553 
555 {
556  AVStream *st;
557  uint32_t type;
558  uint32_t av_unused ctype;
559  int title_size;
560  char *title_str;
561 
562  if (c->fc->nb_streams < 1) // meta before first trak
563  return 0;
564 
565  st = c->fc->streams[c->fc->nb_streams-1];
566 
567  avio_r8(pb); /* version */
568  avio_rb24(pb); /* flags */
569 
570  /* component type */
571  ctype = avio_rl32(pb);
572  type = avio_rl32(pb); /* component subtype */
573 
574  av_dlog(c->fc, "ctype= %.4s (0x%08x)\n", (char*)&ctype, ctype);
575  av_dlog(c->fc, "stype= %.4s\n", (char*)&type);
576 
577  if (type == MKTAG('v','i','d','e'))
579  else if (type == MKTAG('s','o','u','n'))
581  else if (type == MKTAG('m','1','a',' '))
583  else if ((type == MKTAG('s','u','b','p')) || (type == MKTAG('c','l','c','p')))
585 
586  avio_rb32(pb); /* component manufacture */
587  avio_rb32(pb); /* component flags */
588  avio_rb32(pb); /* component flags mask */
589 
590  title_size = atom.size - 24;
591  if (title_size > 0) {
592  title_str = av_malloc(title_size + 1); /* Add null terminator */
593  if (!title_str)
594  return AVERROR(ENOMEM);
595  avio_read(pb, title_str, title_size);
596  title_str[title_size] = 0;
597  if (title_str[0])
598  av_dict_set(&st->metadata, "handler_name", title_str +
599  (!c->isom && title_str[0] == title_size - 1), 0);
600  av_freep(&title_str);
601  }
602 
603  return 0;
604 }
605 
607 {
608  AVStream *st;
609  int tag;
610 
611  if (fc->nb_streams < 1)
612  return 0;
613  st = fc->streams[fc->nb_streams-1];
614 
615  avio_rb32(pb); /* version + flags */
616  ff_mp4_read_descr(fc, pb, &tag);
617  if (tag == MP4ESDescrTag) {
618  ff_mp4_parse_es_descr(pb, NULL);
619  } else
620  avio_rb16(pb); /* ID */
621 
622  ff_mp4_read_descr(fc, pb, &tag);
623  if (tag == MP4DecConfigDescrTag)
624  ff_mp4_read_dec_config_descr(fc, st, pb);
625  return 0;
626 }
627 
629 {
630  return ff_mov_read_esds(c->fc, pb, atom);
631 }
632 
634 {
635  AVStream *st;
636  int ac3info, acmod, lfeon, bsmod;
637 
638  if (c->fc->nb_streams < 1)
639  return 0;
640  st = c->fc->streams[c->fc->nb_streams-1];
641 
642  ac3info = avio_rb24(pb);
643  bsmod = (ac3info >> 14) & 0x7;
644  acmod = (ac3info >> 11) & 0x7;
645  lfeon = (ac3info >> 10) & 0x1;
646  st->codec->channels = ((int[]){2,1,2,3,3,4,4,5})[acmod] + lfeon;
648  if (lfeon)
650  st->codec->audio_service_type = bsmod;
651  if (st->codec->channels > 1 && bsmod == 0x7)
653 
654  return 0;
655 }
656 
658 {
659  AVStream *st;
660  int eac3info, acmod, lfeon, bsmod;
661 
662  if (c->fc->nb_streams < 1)
663  return 0;
664  st = c->fc->streams[c->fc->nb_streams-1];
665 
666  /* No need to parse fields for additional independent substreams and its
667  * associated dependent substreams since libavcodec's E-AC-3 decoder
668  * does not support them yet. */
669  avio_rb16(pb); /* data_rate and num_ind_sub */
670  eac3info = avio_rb24(pb);
671  bsmod = (eac3info >> 12) & 0x1f;
672  acmod = (eac3info >> 9) & 0x7;
673  lfeon = (eac3info >> 8) & 0x1;
675  if (lfeon)
678  st->codec->audio_service_type = bsmod;
679  if (st->codec->channels > 1 && bsmod == 0x7)
681 
682  return 0;
683 }
684 
686 {
687  AVStream *st;
688 
689  if (c->fc->nb_streams < 1)
690  return 0;
691  st = c->fc->streams[c->fc->nb_streams-1];
692 
693  if (atom.size < 16)
694  return 0;
695 
696  /* skip version and flags */
697  avio_skip(pb, 4);
698 
699  ff_mov_read_chan(c->fc, pb, st, atom.size - 4);
700 
701  return 0;
702 }
703 
705 {
706  AVStream *st;
707 
708  if (c->fc->nb_streams < 1)
709  return 0;
710  st = c->fc->streams[c->fc->nb_streams-1];
711 
712  if (ff_get_wav_header(pb, st->codec, atom.size) < 0) {
713  av_log(c->fc, AV_LOG_WARNING, "get_wav_header failed\n");
714  }
715 
716  return 0;
717 }
718 
720 {
721  const int num = avio_rb32(pb);
722  const int den = avio_rb32(pb);
723  AVStream *st;
724 
725  if (c->fc->nb_streams < 1)
726  return 0;
727  st = c->fc->streams[c->fc->nb_streams-1];
728 
729  if ((st->sample_aspect_ratio.den != 1 || st->sample_aspect_ratio.num) && // default
730  (den != st->sample_aspect_ratio.den || num != st->sample_aspect_ratio.num)) {
732  "sample aspect ratio already set to %d:%d, ignoring 'pasp' atom (%d:%d)\n",
734  num, den);
735  } else if (den != 0) {
736  st->sample_aspect_ratio.num = num;
737  st->sample_aspect_ratio.den = den;
738  }
739  return 0;
740 }
741 
742 /* this atom contains actual media data */
744 {
745  if (atom.size == 0) /* wrong one (MP4) */
746  return 0;
747  c->found_mdat=1;
748  return 0; /* now go for moov */
749 }
750 
751 /* read major brand, minor version and compatible brands and store them as metadata */
753 {
754  uint32_t minor_ver;
755  int comp_brand_size;
756  char minor_ver_str[11]; /* 32 bit integer -> 10 digits + null */
757  char* comp_brands_str;
758  uint8_t type[5] = {0};
759 
760  avio_read(pb, type, 4);
761  if (strcmp(type, "qt "))
762  c->isom = 1;
763  av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
764  av_dict_set(&c->fc->metadata, "major_brand", type, 0);
765  minor_ver = avio_rb32(pb); /* minor version */
766  snprintf(minor_ver_str, sizeof(minor_ver_str), "%d", minor_ver);
767  av_dict_set(&c->fc->metadata, "minor_version", minor_ver_str, 0);
768 
769  comp_brand_size = atom.size - 8;
770  if (comp_brand_size < 0)
771  return AVERROR_INVALIDDATA;
772  comp_brands_str = av_malloc(comp_brand_size + 1); /* Add null terminator */
773  if (!comp_brands_str)
774  return AVERROR(ENOMEM);
775  avio_read(pb, comp_brands_str, comp_brand_size);
776  comp_brands_str[comp_brand_size] = 0;
777  av_dict_set(&c->fc->metadata, "compatible_brands", comp_brands_str, 0);
778  av_freep(&comp_brands_str);
779 
780  return 0;
781 }
782 
783 /* this atom should contain all header atoms */
785 {
786  int ret;
787 
788  if (c->found_moov) {
789  av_log(c->fc, AV_LOG_WARNING, "Found duplicated MOOV Atom. Skipped it\n");
790  avio_skip(pb, atom.size);
791  return 0;
792  }
793 
794  if ((ret = mov_read_default(c, pb, atom)) < 0)
795  return ret;
796  /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
797  /* so we don't parse the whole file if over a network */
798  c->found_moov=1;
799  return 0; /* now go for mdat */
800 }
801 
803 {
804  c->fragment.moof_offset = avio_tell(pb) - 8;
805  av_dlog(c->fc, "moof offset %"PRIx64"\n", c->fragment.moof_offset);
806  return mov_read_default(c, pb, atom);
807 }
808 
809 static void mov_metadata_creation_time(AVDictionary **metadata, int64_t time)
810 {
811  char buffer[32];
812  if (time) {
813  struct tm *ptm;
814  time_t timet;
815  if(time >= 2082844800)
816  time -= 2082844800; /* seconds between 1904-01-01 and Epoch */
817  timet = time;
818  ptm = gmtime(&timet);
819  if (!ptm) return;
820  strftime(buffer, sizeof(buffer), "%Y-%m-%d %H:%M:%S", ptm);
821  av_dict_set(metadata, "creation_time", buffer, 0);
822  }
823 }
824 
826 {
827  AVStream *st;
828  MOVStreamContext *sc;
829  int version;
830  char language[4] = {0};
831  unsigned lang;
832  int64_t creation_time;
833 
834  if (c->fc->nb_streams < 1)
835  return 0;
836  st = c->fc->streams[c->fc->nb_streams-1];
837  sc = st->priv_data;
838 
839  if (sc->time_scale) {
840  av_log(c->fc, AV_LOG_ERROR, "Multiple mdhd?\n");
841  return AVERROR_INVALIDDATA;
842  }
843 
844  version = avio_r8(pb);
845  if (version > 1) {
846  avpriv_request_sample(c->fc, "Version %d", version);
847  return AVERROR_PATCHWELCOME;
848  }
849  avio_rb24(pb); /* flags */
850  if (version == 1) {
851  creation_time = avio_rb64(pb);
852  avio_rb64(pb);
853  } else {
854  creation_time = avio_rb32(pb);
855  avio_rb32(pb); /* modification time */
856  }
857  mov_metadata_creation_time(&st->metadata, creation_time);
858 
859  sc->time_scale = avio_rb32(pb);
860  st->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
861 
862  lang = avio_rb16(pb); /* language */
863  if (ff_mov_lang_to_iso639(lang, language))
864  av_dict_set(&st->metadata, "language", language, 0);
865  avio_rb16(pb); /* quality */
866 
867  return 0;
868 }
869 
871 {
872  int64_t creation_time;
873  int version = avio_r8(pb); /* version */
874  avio_rb24(pb); /* flags */
875 
876  if (version == 1) {
877  creation_time = avio_rb64(pb);
878  avio_rb64(pb);
879  } else {
880  creation_time = avio_rb32(pb);
881  avio_rb32(pb); /* modification time */
882  }
883  mov_metadata_creation_time(&c->fc->metadata, creation_time);
884  c->time_scale = avio_rb32(pb); /* time scale */
885 
886  av_dlog(c->fc, "time scale = %i\n", c->time_scale);
887 
888  c->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
889  // set the AVCodecContext duration because the duration of individual tracks
890  // may be inaccurate
891  if (c->time_scale > 0 && !c->trex_data)
893  avio_rb32(pb); /* preferred scale */
894 
895  avio_rb16(pb); /* preferred volume */
896 
897  avio_skip(pb, 10); /* reserved */
898 
899  avio_skip(pb, 36); /* display matrix */
900 
901  avio_rb32(pb); /* preview time */
902  avio_rb32(pb); /* preview duration */
903  avio_rb32(pb); /* poster time */
904  avio_rb32(pb); /* selection time */
905  avio_rb32(pb); /* selection duration */
906  avio_rb32(pb); /* current time */
907  avio_rb32(pb); /* next track ID */
908  return 0;
909 }
910 
912 {
913  AVStream *st;
914  int little_endian;
915 
916  if (c->fc->nb_streams < 1)
917  return 0;
918  st = c->fc->streams[c->fc->nb_streams-1];
919 
920  little_endian = avio_rb16(pb) & 0xFF;
921  av_dlog(c->fc, "enda %d\n", little_endian);
922  if (little_endian == 1) {
923  switch (st->codec->codec_id) {
926  break;
929  break;
932  break;
935  break;
936  default:
937  break;
938  }
939  }
940  return 0;
941 }
942 
944 {
945  AVStream *st;
946  unsigned mov_field_order;
947  enum AVFieldOrder decoded_field_order = AV_FIELD_UNKNOWN;
948 
949  if (c->fc->nb_streams < 1) // will happen with jp2 files
950  return 0;
951  st = c->fc->streams[c->fc->nb_streams-1];
952  if (atom.size < 2)
953  return AVERROR_INVALIDDATA;
954  mov_field_order = avio_rb16(pb);
955  if ((mov_field_order & 0xFF00) == 0x0100)
956  decoded_field_order = AV_FIELD_PROGRESSIVE;
957  else if ((mov_field_order & 0xFF00) == 0x0200) {
958  switch (mov_field_order & 0xFF) {
959  case 0x01: decoded_field_order = AV_FIELD_TT;
960  break;
961  case 0x06: decoded_field_order = AV_FIELD_BB;
962  break;
963  case 0x09: decoded_field_order = AV_FIELD_TB;
964  break;
965  case 0x0E: decoded_field_order = AV_FIELD_BT;
966  break;
967  }
968  }
969  if (decoded_field_order == AV_FIELD_UNKNOWN && mov_field_order) {
970  av_log(NULL, AV_LOG_ERROR, "Unknown MOV field order 0x%04x\n", mov_field_order);
971  }
972  st->codec->field_order = decoded_field_order;
973 
974  return 0;
975 }
976 
977 /* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
979  enum AVCodecID codec_id)
980 {
981  AVStream *st;
982  uint64_t size;
983  uint8_t *buf;
984  int err;
985 
986  if (c->fc->nb_streams < 1) // will happen with jp2 files
987  return 0;
988  st= c->fc->streams[c->fc->nb_streams-1];
989 
990  if (st->codec->codec_id != codec_id)
991  return 0; /* unexpected codec_id - don't mess with extradata */
992 
993  size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
994  if (size > INT_MAX || (uint64_t)atom.size > INT_MAX)
995  return AVERROR_INVALIDDATA;
996  if ((err = av_reallocp(&st->codec->extradata, size)) < 0) {
997  st->codec->extradata_size = 0;
998  return err;
999  }
1000  buf = st->codec->extradata + st->codec->extradata_size;
1002  AV_WB32( buf , atom.size + 8);
1003  AV_WL32( buf + 4, atom.type);
1004  avio_read(pb, buf + 8, atom.size);
1005  return 0;
1006 }
1007 
1008 /* wrapper functions for reading ALAC/AVS/MJPEG/MJPEG2000 extradata atoms only for those codecs */
1010 {
1011  return mov_read_extradata(c, pb, atom, AV_CODEC_ID_ALAC);
1012 }
1013 
1015 {
1016  return mov_read_extradata(c, pb, atom, AV_CODEC_ID_AVS);
1017 }
1018 
1020 {
1021  return mov_read_extradata(c, pb, atom, AV_CODEC_ID_JPEG2000);
1022 }
1023 
1025 {
1026  return mov_read_extradata(c, pb, atom, AV_CODEC_ID_AVUI);
1027 }
1028 
1030 {
1031  int ret = mov_read_extradata(c, pb, atom, AV_CODEC_ID_TARGA_Y216);
1032 
1033  if (!ret && c->fc->nb_streams >= 1) {
1034  AVCodecContext *avctx = c->fc->streams[c->fc->nb_streams-1]->codec;
1035  if (avctx->extradata_size >= 40) {
1036  avctx->height = AV_RB16(&avctx->extradata[36]);
1037  avctx->width = AV_RB16(&avctx->extradata[38]);
1038  }
1039  }
1040  return ret;
1041 }
1042 
1044 {
1045  AVCodecContext *codec = c->fc->streams[c->fc->nb_streams-1]->codec;
1046  if (codec->codec_tag == MKTAG('A', 'V', 'i', 'n') &&
1047  codec->codec_id == AV_CODEC_ID_H264 &&
1048  atom.size > 11) {
1049  avio_skip(pb, 10);
1050  /* For AVID AVCI50, force width of 1440 to be able to select the correct SPS and PPS */
1051  if (avio_rb16(pb) == 0xd4d)
1052  codec->width = 1440;
1053  return 0;
1054  }
1055 
1056  return mov_read_avid(c, pb, atom);
1057 }
1058 
1060 {
1061  return mov_read_extradata(c, pb, atom, AV_CODEC_ID_SVQ3);
1062 }
1063 
1065 {
1066  AVStream *st;
1067 
1068  if (c->fc->nb_streams < 1)
1069  return 0;
1070  st = c->fc->streams[c->fc->nb_streams-1];
1071 
1072  if ((uint64_t)atom.size > (1<<30))
1073  return AVERROR_INVALIDDATA;
1074 
1075  if (st->codec->codec_id == AV_CODEC_ID_QDM2 ||
1076  st->codec->codec_id == AV_CODEC_ID_QDMC ||
1077  st->codec->codec_id == AV_CODEC_ID_SPEEX) {
1078  // pass all frma atom to codec, needed at least for QDMC and QDM2
1079  av_free(st->codec->extradata);
1080  if (ff_alloc_extradata(st->codec, atom.size))
1081  return AVERROR(ENOMEM);
1082  avio_read(pb, st->codec->extradata, atom.size);
1083  } else if (atom.size > 8) { /* to read frma, esds atoms */
1084  int ret;
1085  if ((ret = mov_read_default(c, pb, atom)) < 0)
1086  return ret;
1087  } else
1088  avio_skip(pb, atom.size);
1089  return 0;
1090 }
1091 
1092 /**
1093  * This function reads atom content and puts data in extradata without tag
1094  * nor size unlike mov_read_extradata.
1095  */
1097 {
1098  AVStream *st;
1099 
1100  if (c->fc->nb_streams < 1)
1101  return 0;
1102  st = c->fc->streams[c->fc->nb_streams-1];
1103 
1104  if ((uint64_t)atom.size > (1<<30))
1105  return AVERROR_INVALIDDATA;
1106 
1107  if (atom.size >= 10) {
1108  // Broken files created by legacy versions of libavformat will
1109  // wrap a whole fiel atom inside of a glbl atom.
1110  unsigned size = avio_rb32(pb);
1111  unsigned type = avio_rl32(pb);
1112  avio_seek(pb, -8, SEEK_CUR);
1113  if (type == MKTAG('f','i','e','l') && size == atom.size)
1114  return mov_read_default(c, pb, atom);
1115  }
1116  av_free(st->codec->extradata);
1117  if (ff_alloc_extradata(st->codec, atom.size))
1118  return AVERROR(ENOMEM);
1119  avio_read(pb, st->codec->extradata, atom.size);
1120  return 0;
1121 }
1122 
1124 {
1125  AVStream *st;
1126  uint8_t profile_level;
1127 
1128  if (c->fc->nb_streams < 1)
1129  return 0;
1130  st = c->fc->streams[c->fc->nb_streams-1];
1131 
1132  if (atom.size >= (1<<28) || atom.size < 7)
1133  return AVERROR_INVALIDDATA;
1134 
1135  profile_level = avio_r8(pb);
1136  if ((profile_level & 0xf0) != 0xc0)
1137  return 0;
1138 
1139  av_free(st->codec->extradata);
1140  if (ff_alloc_extradata(st->codec, atom.size - 7))
1141  return AVERROR(ENOMEM);
1142  avio_seek(pb, 6, SEEK_CUR);
1143  avio_read(pb, st->codec->extradata, st->codec->extradata_size);
1144  return 0;
1145 }
1146 
1147 /**
1148  * An strf atom is a BITMAPINFOHEADER struct. This struct is 40 bytes itself,
1149  * but can have extradata appended at the end after the 40 bytes belonging
1150  * to the struct.
1151  */
1153 {
1154  AVStream *st;
1155 
1156  if (c->fc->nb_streams < 1)
1157  return 0;
1158  if (atom.size <= 40)
1159  return 0;
1160  st = c->fc->streams[c->fc->nb_streams-1];
1161 
1162  if ((uint64_t)atom.size > (1<<30))
1163  return AVERROR_INVALIDDATA;
1164 
1165  av_free(st->codec->extradata);
1166  if (ff_alloc_extradata(st->codec, atom.size - 40))
1167  return AVERROR(ENOMEM);
1168  avio_skip(pb, 40);
1169  avio_read(pb, st->codec->extradata, atom.size - 40);
1170  return 0;
1171 }
1172 
1174 {
1175  AVStream *st;
1176  MOVStreamContext *sc;
1177  unsigned int i, entries;
1178 
1179  if (c->fc->nb_streams < 1)
1180  return 0;
1181  st = c->fc->streams[c->fc->nb_streams-1];
1182  sc = st->priv_data;
1183 
1184  avio_r8(pb); /* version */
1185  avio_rb24(pb); /* flags */
1186 
1187  entries = avio_rb32(pb);
1188 
1189  if (!entries)
1190  return 0;
1191  if (entries >= UINT_MAX/sizeof(int64_t))
1192  return AVERROR_INVALIDDATA;
1193 
1194  sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
1195  if (!sc->chunk_offsets)
1196  return AVERROR(ENOMEM);
1197  sc->chunk_count = entries;
1198 
1199  if (atom.type == MKTAG('s','t','c','o'))
1200  for (i = 0; i < entries && !pb->eof_reached; i++)
1201  sc->chunk_offsets[i] = avio_rb32(pb);
1202  else if (atom.type == MKTAG('c','o','6','4'))
1203  for (i = 0; i < entries && !pb->eof_reached; i++)
1204  sc->chunk_offsets[i] = avio_rb64(pb);
1205  else
1206  return AVERROR_INVALIDDATA;
1207 
1208  sc->chunk_count = i;
1209 
1210  if (pb->eof_reached)
1211  return AVERROR_EOF;
1212 
1213  return 0;
1214 }
1215 
1216 /**
1217  * Compute codec id for 'lpcm' tag.
1218  * See CoreAudioTypes and AudioStreamBasicDescription at Apple.
1219  */
1221 {
1222  /* lpcm flags:
1223  * 0x1 = float
1224  * 0x2 = big-endian
1225  * 0x4 = signed
1226  */
1227  return ff_get_pcm_codec_id(bps, flags & 1, flags & 2, flags & 4 ? -1 : 0);
1228 }
1229 
1230 static int mov_codec_id(AVStream *st, uint32_t format)
1231 {
1232  int id = ff_codec_get_id(ff_codec_movaudio_tags, format);
1233 
1234  if (id <= 0 &&
1235  ((format & 0xFFFF) == 'm' + ('s' << 8) ||
1236  (format & 0xFFFF) == 'T' + ('S' << 8)))
1237  id = ff_codec_get_id(ff_codec_wav_tags, av_bswap32(format) & 0xFFFF);
1238 
1239  if (st->codec->codec_type != AVMEDIA_TYPE_VIDEO && id > 0) {
1241  } else if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO &&
1242  /* skip old asf mpeg4 tag */
1243  format && format != MKTAG('m','p','4','s')) {
1245  if (id <= 0)
1246  id = ff_codec_get_id(ff_codec_bmp_tags, format);
1247  if (id > 0)
1249  else if (st->codec->codec_type == AVMEDIA_TYPE_DATA ||
1251  st->codec->codec_id == AV_CODEC_ID_NONE)) {
1253  if (id > 0)
1255  }
1256  }
1257 
1258  st->codec->codec_tag = format;
1259 
1260  return id;
1261 }
1262 
1264  AVStream *st, MOVStreamContext *sc)
1265 {
1266  unsigned int color_depth, len, j;
1267  int color_greyscale;
1268  int color_table_id;
1269 
1270  avio_rb16(pb); /* version */
1271  avio_rb16(pb); /* revision level */
1272  avio_rb32(pb); /* vendor */
1273  avio_rb32(pb); /* temporal quality */
1274  avio_rb32(pb); /* spatial quality */
1275 
1276  st->codec->width = avio_rb16(pb); /* width */
1277  st->codec->height = avio_rb16(pb); /* height */
1278 
1279  avio_rb32(pb); /* horiz resolution */
1280  avio_rb32(pb); /* vert resolution */
1281  avio_rb32(pb); /* data size, always 0 */
1282  avio_rb16(pb); /* frames per samples */
1283 
1284  len = avio_r8(pb); /* codec name, pascal string */
1285  if (len > 31)
1286  len = 31;
1287  mov_read_mac_string(c, pb, len, st->codec->codec_name, 32);
1288  if (len < 31)
1289  avio_skip(pb, 31 - len);
1290  /* codec_tag YV12 triggers an UV swap in rawdec.c */
1291  if (!memcmp(st->codec->codec_name, "Planar Y'CbCr 8-bit 4:2:0", 25)) {
1292  st->codec->codec_tag = MKTAG('I', '4', '2', '0');
1293  st->codec->width &= ~1;
1294  st->codec->height &= ~1;
1295  }
1296  /* Flash Media Server uses tag H263 with Sorenson Spark */
1297  if (st->codec->codec_tag == MKTAG('H','2','6','3') &&
1298  !memcmp(st->codec->codec_name, "Sorenson H263", 13))
1300 
1301  st->codec->bits_per_coded_sample = avio_rb16(pb); /* depth */
1302  color_table_id = avio_rb16(pb); /* colortable id */
1303  av_dlog(c->fc, "depth %d, ctab id %d\n",
1304  st->codec->bits_per_coded_sample, color_table_id);
1305  /* figure out the palette situation */
1306  color_depth = st->codec->bits_per_coded_sample & 0x1F;
1307  color_greyscale = st->codec->bits_per_coded_sample & 0x20;
1308 
1309  /* if the depth is 2, 4, or 8 bpp, file is palettized */
1310  if ((color_depth == 2) || (color_depth == 4) || (color_depth == 8)) {
1311  /* for palette traversal */
1312  unsigned int color_start, color_count, color_end;
1313  unsigned char a, r, g, b;
1314 
1315  if (color_greyscale) {
1316  int color_index, color_dec;
1317  /* compute the greyscale palette */
1318  st->codec->bits_per_coded_sample = color_depth;
1319  color_count = 1 << color_depth;
1320  color_index = 255;
1321  color_dec = 256 / (color_count - 1);
1322  for (j = 0; j < color_count; j++) {
1323  if (st->codec->codec_id == AV_CODEC_ID_CINEPAK){
1324  r = g = b = color_count - 1 - color_index;
1325  } else
1326  r = g = b = color_index;
1327  sc->palette[j] = (0xFFU << 24) | (r << 16) | (g << 8) | (b);
1328  color_index -= color_dec;
1329  if (color_index < 0)
1330  color_index = 0;
1331  }
1332  } else if (color_table_id) {
1333  const uint8_t *color_table;
1334  /* if flag bit 3 is set, use the default palette */
1335  color_count = 1 << color_depth;
1336  if (color_depth == 2)
1337  color_table = ff_qt_default_palette_4;
1338  else if (color_depth == 4)
1339  color_table = ff_qt_default_palette_16;
1340  else
1341  color_table = ff_qt_default_palette_256;
1342 
1343  for (j = 0; j < color_count; j++) {
1344  r = color_table[j * 3 + 0];
1345  g = color_table[j * 3 + 1];
1346  b = color_table[j * 3 + 2];
1347  sc->palette[j] = (0xFFU << 24) | (r << 16) | (g << 8) | (b);
1348  }
1349  } else {
1350  /* load the palette from the file */
1351  color_start = avio_rb32(pb);
1352  color_count = avio_rb16(pb);
1353  color_end = avio_rb16(pb);
1354  if ((color_start <= 255) && (color_end <= 255)) {
1355  for (j = color_start; j <= color_end; j++) {
1356  /* each A, R, G, or B component is 16 bits;
1357  * only use the top 8 bits */
1358  a = avio_r8(pb);
1359  avio_r8(pb);
1360  r = avio_r8(pb);
1361  avio_r8(pb);
1362  g = avio_r8(pb);
1363  avio_r8(pb);
1364  b = avio_r8(pb);
1365  avio_r8(pb);
1366  sc->palette[j] = (a << 24 ) | (r << 16) | (g << 8) | (b);
1367  }
1368  }
1369  }
1370  sc->has_palette = 1;
1371  }
1372 }
1373 
1375  AVStream *st, MOVStreamContext *sc)
1376 {
1377  int bits_per_sample, flags;
1378  uint16_t version = avio_rb16(pb);
1379  AVDictionaryEntry *compatible_brands = av_dict_get(c->fc->metadata, "compatible_brands", NULL, AV_DICT_MATCH_CASE);
1380 
1381  avio_rb16(pb); /* revision level */
1382  avio_rb32(pb); /* vendor */
1383 
1384  st->codec->channels = avio_rb16(pb); /* channel count */
1385  st->codec->bits_per_coded_sample = avio_rb16(pb); /* sample size */
1386  av_dlog(c->fc, "audio channels %d\n", st->codec->channels);
1387 
1388  sc->audio_cid = avio_rb16(pb);
1389  avio_rb16(pb); /* packet size = 0 */
1390 
1391  st->codec->sample_rate = ((avio_rb32(pb) >> 16));
1392 
1393  // Read QT version 1 fields. In version 0 these do not exist.
1394  av_dlog(c->fc, "version =%d, isom =%d\n", version, c->isom);
1395  if (!c->isom ||
1396  (compatible_brands && strstr(compatible_brands->value, "qt "))) {
1397 
1398  if (version == 1) {
1399  sc->samples_per_frame = avio_rb32(pb);
1400  avio_rb32(pb); /* bytes per packet */
1401  sc->bytes_per_frame = avio_rb32(pb);
1402  avio_rb32(pb); /* bytes per sample */
1403  } else if (version == 2) {
1404  avio_rb32(pb); /* sizeof struct only */
1406  st->codec->channels = avio_rb32(pb);
1407  avio_rb32(pb); /* always 0x7F000000 */
1409 
1410  flags = avio_rb32(pb); /* lpcm format specific flag */
1411  sc->bytes_per_frame = avio_rb32(pb);
1412  sc->samples_per_frame = avio_rb32(pb);
1413  if (st->codec->codec_tag == MKTAG('l','p','c','m'))
1414  st->codec->codec_id =
1416  flags);
1417  }
1418  }
1419 
1420  switch (st->codec->codec_id) {
1421  case AV_CODEC_ID_PCM_S8:
1422  case AV_CODEC_ID_PCM_U8:
1423  if (st->codec->bits_per_coded_sample == 16)
1425  break;
1426  case AV_CODEC_ID_PCM_S16LE:
1427  case AV_CODEC_ID_PCM_S16BE:
1428  if (st->codec->bits_per_coded_sample == 8)
1430  else if (st->codec->bits_per_coded_sample == 24)
1431  st->codec->codec_id =
1434  break;
1435  /* set values for old format before stsd version 1 appeared */
1436  case AV_CODEC_ID_MACE3:
1437  sc->samples_per_frame = 6;
1438  sc->bytes_per_frame = 2 * st->codec->channels;
1439  break;
1440  case AV_CODEC_ID_MACE6:
1441  sc->samples_per_frame = 6;
1442  sc->bytes_per_frame = 1 * st->codec->channels;
1443  break;
1445  sc->samples_per_frame = 64;
1446  sc->bytes_per_frame = 34 * st->codec->channels;
1447  break;
1448  case AV_CODEC_ID_GSM:
1449  sc->samples_per_frame = 160;
1450  sc->bytes_per_frame = 33;
1451  break;
1452  default:
1453  break;
1454  }
1455 
1456  bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
1457  if (bits_per_sample) {
1458  st->codec->bits_per_coded_sample = bits_per_sample;
1459  sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
1460  }
1461 }
1462 
1464  AVStream *st, MOVStreamContext *sc,
1465  int size)
1466 {
1467  // ttxt stsd contains display flags, justification, background
1468  // color, fonts, and default styles, so fake an atom to read it
1469  MOVAtom fake_atom = { .size = size };
1470  // mp4s contains a regular esds atom
1471  if (st->codec->codec_tag != AV_RL32("mp4s"))
1472  mov_read_glbl(c, pb, fake_atom);
1473  st->codec->width = sc->width;
1474  st->codec->height = sc->height;
1475 }
1476 
1478  AVStream *st, MOVStreamContext *sc,
1479  int size)
1480 {
1481  if (st->codec->codec_tag == MKTAG('t','m','c','d')) {
1482  if (ff_alloc_extradata(st->codec, size))
1483  return AVERROR(ENOMEM);
1484  avio_read(pb, st->codec->extradata, size);
1485  if (size > 16) {
1486  MOVStreamContext *tmcd_ctx = st->priv_data;
1487  int val;
1488  val = AV_RB32(st->codec->extradata + 4);
1489  tmcd_ctx->tmcd_flags = val;
1490  if (val & 1)
1492  st->codec->time_base.den = st->codec->extradata[16]; /* number of frame */
1493  st->codec->time_base.num = 1;
1494  }
1495  } else {
1496  /* other codec type, just skip (rtp, mp4s ...) */
1497  avio_skip(pb, size);
1498  }
1499  return 0;
1500 }
1501 
1503  AVStream *st, MOVStreamContext *sc)
1504 {
1505  if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
1506  !st->codec->sample_rate && sc->time_scale > 1)
1507  st->codec->sample_rate = sc->time_scale;
1508 
1509  /* special codec parameters handling */
1510  switch (st->codec->codec_id) {
1511 #if CONFIG_DV_DEMUXER
1512  case AV_CODEC_ID_DVAUDIO:
1515  if (!c->dv_demux) {
1516  av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
1517  return AVERROR(ENOMEM);
1518  }
1519  sc->dv_audio_container = 1;
1521  break;
1522 #endif
1523  /* no ifdef since parameters are always those */
1524  case AV_CODEC_ID_QCELP:
1525  st->codec->channels = 1;
1526  // force sample rate for qcelp when not stored in mov
1527  if (st->codec->codec_tag != MKTAG('Q','c','l','p'))
1528  st->codec->sample_rate = 8000;
1529  break;
1530  case AV_CODEC_ID_AMR_NB:
1531  st->codec->channels = 1;
1532  /* force sample rate for amr, stsd in 3gp does not store sample rate */
1533  st->codec->sample_rate = 8000;
1534  break;
1535  case AV_CODEC_ID_AMR_WB:
1536  st->codec->channels = 1;
1537  st->codec->sample_rate = 16000;
1538  break;
1539  case AV_CODEC_ID_MP2:
1540  case AV_CODEC_ID_MP3:
1541  /* force type after stsd for m1a hdlr */
1544  break;
1545  case AV_CODEC_ID_GSM:
1546  case AV_CODEC_ID_ADPCM_MS:
1548  case AV_CODEC_ID_ILBC:
1549  case AV_CODEC_ID_MACE3:
1550  case AV_CODEC_ID_MACE6:
1551  case AV_CODEC_ID_QDM2:
1552  st->codec->block_align = sc->bytes_per_frame;
1553  break;
1554  case AV_CODEC_ID_ALAC:
1555  if (st->codec->extradata_size == 36) {
1556  st->codec->channels = AV_RB8 (st->codec->extradata + 21);
1557  st->codec->sample_rate = AV_RB32(st->codec->extradata + 32);
1558  }
1559  break;
1560  case AV_CODEC_ID_AC3:
1562  break;
1565  break;
1566  case AV_CODEC_ID_VC1:
1568  break;
1569  default:
1570  break;
1571  }
1572  return 0;
1573 }
1574 
1576  int codec_tag, int format,
1577  int size)
1578 {
1579  int video_codec_id = ff_codec_get_id(ff_codec_movvideo_tags, format);
1580 
1581  if (codec_tag &&
1582  (codec_tag != format &&
1583  (c->fc->video_codec_id ? video_codec_id != c->fc->video_codec_id
1584  : codec_tag != MKTAG('j','p','e','g')))) {
1585  /* Multiple fourcc, we skip JPEG. This is not correct, we should
1586  * export it as a separate AVStream but this needs a few changes
1587  * in the MOV demuxer, patch welcome. */
1588 
1589  av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n");
1590  avio_skip(pb, size);
1591  return 1;
1592  }
1593  if ( codec_tag == AV_RL32("avc1") ||
1594  codec_tag == AV_RL32("hvc1") ||
1595  codec_tag == AV_RL32("hev1")
1596  )
1597  av_log(c->fc, AV_LOG_WARNING, "Concatenated H.264 or H.265 might not play correctly.\n");
1598 
1599  return 0;
1600 }
1601 
1603 {
1604  AVStream *st;
1605  MOVStreamContext *sc;
1606  int pseudo_stream_id;
1607 
1608  if (c->fc->nb_streams < 1)
1609  return 0;
1610  st = c->fc->streams[c->fc->nb_streams-1];
1611  sc = st->priv_data;
1612 
1613  for (pseudo_stream_id = 0;
1614  pseudo_stream_id < entries && !pb->eof_reached;
1615  pseudo_stream_id++) {
1616  //Parsing Sample description table
1617  enum AVCodecID id;
1618  int ret, dref_id = 1;
1619  MOVAtom a = { AV_RL32("stsd") };
1620  int64_t start_pos = avio_tell(pb);
1621  int64_t size = avio_rb32(pb); /* size */
1622  uint32_t format = avio_rl32(pb); /* data format */
1623 
1624  if (size >= 16) {
1625  avio_rb32(pb); /* reserved */
1626  avio_rb16(pb); /* reserved */
1627  dref_id = avio_rb16(pb);
1628  }else if (size <= 7){
1629  av_log(c->fc, AV_LOG_ERROR, "invalid size %"PRId64" in stsd\n", size);
1630  return AVERROR_INVALIDDATA;
1631  }
1632 
1633  if (mov_skip_multiple_stsd(c, pb, st->codec->codec_tag, format,
1634  size - (avio_tell(pb) - start_pos)))
1635  continue;
1636 
1637  sc->pseudo_stream_id = st->codec->codec_tag ? -1 : pseudo_stream_id;
1638  sc->dref_id= dref_id;
1639 
1640  id = mov_codec_id(st, format);
1641 
1642  av_dlog(c->fc, "size=%"PRId64" 4CC= %c%c%c%c codec_type=%d\n", size,
1643  (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff,
1644  (format >> 24) & 0xff, st->codec->codec_type);
1645 
1646  if (st->codec->codec_type==AVMEDIA_TYPE_VIDEO) {
1647  st->codec->codec_id = id;
1648  mov_parse_stsd_video(c, pb, st, sc);
1649  } else if (st->codec->codec_type==AVMEDIA_TYPE_AUDIO) {
1650  st->codec->codec_id = id;
1651  mov_parse_stsd_audio(c, pb, st, sc);
1652  } else if (st->codec->codec_type==AVMEDIA_TYPE_SUBTITLE){
1653  st->codec->codec_id = id;
1654  mov_parse_stsd_subtitle(c, pb, st, sc,
1655  size - (avio_tell(pb) - start_pos));
1656  } else {
1657  ret = mov_parse_stsd_data(c, pb, st, sc,
1658  size - (avio_tell(pb) - start_pos));
1659  if (ret < 0)
1660  return ret;
1661  }
1662  /* this will read extra atoms at the end (wave, alac, damr, avcC, hvcC, SMI ...) */
1663  a.size = size - (avio_tell(pb) - start_pos);
1664  if (a.size > 8) {
1665  if ((ret = mov_read_default(c, pb, a)) < 0)
1666  return ret;
1667  } else if (a.size > 0)
1668  avio_skip(pb, a.size);
1669  }
1670 
1671  if (pb->eof_reached)
1672  return AVERROR_EOF;
1673 
1674  return mov_finalize_stsd_codec(c, pb, st, sc);
1675 }
1676 
1678 {
1679  int entries;
1680 
1681  avio_r8(pb); /* version */
1682  avio_rb24(pb); /* flags */
1683  entries = avio_rb32(pb);
1684 
1685  return ff_mov_read_stsd_entries(c, pb, entries);
1686 }
1687 
1689 {
1690  AVStream *st;
1691  MOVStreamContext *sc;
1692  unsigned int i, entries;
1693 
1694  if (c->fc->nb_streams < 1)
1695  return 0;
1696  st = c->fc->streams[c->fc->nb_streams-1];
1697  sc = st->priv_data;
1698 
1699  avio_r8(pb); /* version */
1700  avio_rb24(pb); /* flags */
1701 
1702  entries = avio_rb32(pb);
1703 
1704  av_dlog(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
1705 
1706  if (!entries)
1707  return 0;
1708  if (entries >= UINT_MAX / sizeof(*sc->stsc_data))
1709  return AVERROR_INVALIDDATA;
1710  sc->stsc_data = av_malloc(entries * sizeof(*sc->stsc_data));
1711  if (!sc->stsc_data)
1712  return AVERROR(ENOMEM);
1713 
1714  for (i = 0; i < entries && !pb->eof_reached; i++) {
1715  sc->stsc_data[i].first = avio_rb32(pb);
1716  sc->stsc_data[i].count = avio_rb32(pb);
1717  sc->stsc_data[i].id = avio_rb32(pb);
1718  }
1719 
1720  sc->stsc_count = i;
1721 
1722  if (pb->eof_reached)
1723  return AVERROR_EOF;
1724 
1725  return 0;
1726 }
1727 
1729 {
1730  AVStream *st;
1731  MOVStreamContext *sc;
1732  unsigned i, entries;
1733 
1734  if (c->fc->nb_streams < 1)
1735  return 0;
1736  st = c->fc->streams[c->fc->nb_streams-1];
1737  sc = st->priv_data;
1738 
1739  avio_rb32(pb); // version + flags
1740 
1741  entries = avio_rb32(pb);
1742  if (entries >= UINT_MAX / sizeof(*sc->stps_data))
1743  return AVERROR_INVALIDDATA;
1744  sc->stps_data = av_malloc(entries * sizeof(*sc->stps_data));
1745  if (!sc->stps_data)
1746  return AVERROR(ENOMEM);
1747 
1748  for (i = 0; i < entries && !pb->eof_reached; i++) {
1749  sc->stps_data[i] = avio_rb32(pb);
1750  //av_dlog(c->fc, "stps %d\n", sc->stps_data[i]);
1751  }
1752 
1753  sc->stps_count = i;
1754 
1755  if (pb->eof_reached)
1756  return AVERROR_EOF;
1757 
1758  return 0;
1759 }
1760 
1762 {
1763  AVStream *st;
1764  MOVStreamContext *sc;
1765  unsigned int i, entries;
1766 
1767  if (c->fc->nb_streams < 1)
1768  return 0;
1769  st = c->fc->streams[c->fc->nb_streams-1];
1770  sc = st->priv_data;
1771 
1772  avio_r8(pb); /* version */
1773  avio_rb24(pb); /* flags */
1774 
1775  entries = avio_rb32(pb);
1776 
1777  av_dlog(c->fc, "keyframe_count = %d\n", entries);
1778 
1779  if (!entries)
1780  {
1781  sc->keyframe_absent = 1;
1782  if (!st->need_parsing)
1784  return 0;
1785  }
1786  if (entries >= UINT_MAX / sizeof(int))
1787  return AVERROR_INVALIDDATA;
1788  sc->keyframes = av_malloc(entries * sizeof(int));
1789  if (!sc->keyframes)
1790  return AVERROR(ENOMEM);
1791 
1792  for (i = 0; i < entries && !pb->eof_reached; i++) {
1793  sc->keyframes[i] = avio_rb32(pb);
1794  //av_dlog(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
1795  }
1796 
1797  sc->keyframe_count = i;
1798 
1799  if (pb->eof_reached)
1800  return AVERROR_EOF;
1801 
1802  return 0;
1803 }
1804 
1806 {
1807  AVStream *st;
1808  MOVStreamContext *sc;
1809  unsigned int i, entries, sample_size, field_size, num_bytes;
1810  GetBitContext gb;
1811  unsigned char* buf;
1812 
1813  if (c->fc->nb_streams < 1)
1814  return 0;
1815  st = c->fc->streams[c->fc->nb_streams-1];
1816  sc = st->priv_data;
1817 
1818  avio_r8(pb); /* version */
1819  avio_rb24(pb); /* flags */
1820 
1821  if (atom.type == MKTAG('s','t','s','z')) {
1822  sample_size = avio_rb32(pb);
1823  if (!sc->sample_size) /* do not overwrite value computed in stsd */
1824  sc->sample_size = sample_size;
1825  sc->stsz_sample_size = sample_size;
1826  field_size = 32;
1827  } else {
1828  sample_size = 0;
1829  avio_rb24(pb); /* reserved */
1830  field_size = avio_r8(pb);
1831  }
1832  entries = avio_rb32(pb);
1833 
1834  av_dlog(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, entries);
1835 
1836  sc->sample_count = entries;
1837  if (sample_size)
1838  return 0;
1839 
1840  if (field_size != 4 && field_size != 8 && field_size != 16 && field_size != 32) {
1841  av_log(c->fc, AV_LOG_ERROR, "Invalid sample field size %d\n", field_size);
1842  return AVERROR_INVALIDDATA;
1843  }
1844 
1845  if (!entries)
1846  return 0;
1847  if (entries >= UINT_MAX / sizeof(int) || entries >= (UINT_MAX - 4) / field_size)
1848  return AVERROR_INVALIDDATA;
1849  sc->sample_sizes = av_malloc(entries * sizeof(int));
1850  if (!sc->sample_sizes)
1851  return AVERROR(ENOMEM);
1852 
1853  num_bytes = (entries*field_size+4)>>3;
1854 
1855  buf = av_malloc(num_bytes+FF_INPUT_BUFFER_PADDING_SIZE);
1856  if (!buf) {
1857  av_freep(&sc->sample_sizes);
1858  return AVERROR(ENOMEM);
1859  }
1860 
1861  if (avio_read(pb, buf, num_bytes) < num_bytes) {
1862  av_freep(&sc->sample_sizes);
1863  av_free(buf);
1864  return AVERROR_INVALIDDATA;
1865  }
1866 
1867  init_get_bits(&gb, buf, 8*num_bytes);
1868 
1869  for (i = 0; i < entries && !pb->eof_reached; i++) {
1870  sc->sample_sizes[i] = get_bits_long(&gb, field_size);
1871  sc->data_size += sc->sample_sizes[i];
1872  }
1873 
1874  sc->sample_count = i;
1875 
1876  if (pb->eof_reached)
1877  return AVERROR_EOF;
1878 
1879  av_free(buf);
1880  return 0;
1881 }
1882 
1884 {
1885  AVStream *st;
1886  MOVStreamContext *sc;
1887  unsigned int i, entries;
1888  int64_t duration=0;
1889  int64_t total_sample_count=0;
1890 
1891  if (c->fc->nb_streams < 1)
1892  return 0;
1893  st = c->fc->streams[c->fc->nb_streams-1];
1894  sc = st->priv_data;
1895 
1896  avio_r8(pb); /* version */
1897  avio_rb24(pb); /* flags */
1898  entries = avio_rb32(pb);
1899 
1900  av_dlog(c->fc, "track[%i].stts.entries = %i\n",
1901  c->fc->nb_streams-1, entries);
1902 
1903  if (entries >= UINT_MAX / sizeof(*sc->stts_data))
1904  return -1;
1905 
1906  sc->stts_data = av_malloc(entries * sizeof(*sc->stts_data));
1907  if (!sc->stts_data)
1908  return AVERROR(ENOMEM);
1909 
1910  for (i = 0; i < entries && !pb->eof_reached; i++) {
1911  int sample_duration;
1912  int sample_count;
1913 
1914  sample_count=avio_rb32(pb);
1915  sample_duration = avio_rb32(pb);
1916 
1917  /* sample_duration < 0 is invalid based on the spec */
1918  if (sample_duration < 0) {
1919  av_log(c->fc, AV_LOG_ERROR, "Invalid SampleDelta in STTS %d\n", sample_duration);
1920  sample_duration = 1;
1921  }
1922  if (sample_count < 0) {
1923  av_log(c->fc, AV_LOG_ERROR, "Invalid sample_count=%d\n", sample_count);
1924  return AVERROR_INVALIDDATA;
1925  }
1926  sc->stts_data[i].count= sample_count;
1927  sc->stts_data[i].duration= sample_duration;
1928 
1929  av_dlog(c->fc, "sample_count=%d, sample_duration=%d\n",
1930  sample_count, sample_duration);
1931 
1932  duration+=(int64_t)sample_duration*sample_count;
1933  total_sample_count+=sample_count;
1934  }
1935 
1936  sc->stts_count = i;
1937 
1938  if (pb->eof_reached)
1939  return AVERROR_EOF;
1940 
1941  st->nb_frames= total_sample_count;
1942  if (duration)
1943  st->duration= duration;
1944  sc->track_end = duration;
1945  return 0;
1946 }
1947 
1949 {
1950  if (duration < 0) {
1951  sc->dts_shift = FFMAX(sc->dts_shift, -duration);
1952  }
1953 }
1954 
1956 {
1957  AVStream *st;
1958  MOVStreamContext *sc;
1959  unsigned int i, entries;
1960 
1961  if (c->fc->nb_streams < 1)
1962  return 0;
1963  st = c->fc->streams[c->fc->nb_streams-1];
1964  sc = st->priv_data;
1965 
1966  avio_r8(pb); /* version */
1967  avio_rb24(pb); /* flags */
1968  entries = avio_rb32(pb);
1969 
1970  av_dlog(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
1971 
1972  if (!entries)
1973  return 0;
1974  if (entries >= UINT_MAX / sizeof(*sc->ctts_data))
1975  return AVERROR_INVALIDDATA;
1976  sc->ctts_data = av_malloc(entries * sizeof(*sc->ctts_data));
1977  if (!sc->ctts_data)
1978  return AVERROR(ENOMEM);
1979 
1980  for (i = 0; i < entries && !pb->eof_reached; i++) {
1981  int count =avio_rb32(pb);
1982  int duration =avio_rb32(pb);
1983 
1984  sc->ctts_data[i].count = count;
1985  sc->ctts_data[i].duration= duration;
1986 
1987  av_dlog(c->fc, "count=%d, duration=%d\n",
1988  count, duration);
1989 
1990  if (FFABS(duration) > (1<<28) && i+2<entries) {
1991  av_log(c->fc, AV_LOG_WARNING, "CTTS invalid\n");
1992  av_freep(&sc->ctts_data);
1993  sc->ctts_count = 0;
1994  return 0;
1995  }
1996 
1997  if (i+2<entries)
1998  mov_update_dts_shift(sc, duration);
1999  }
2000 
2001  sc->ctts_count = i;
2002 
2003  if (pb->eof_reached)
2004  return AVERROR_EOF;
2005 
2006  av_dlog(c->fc, "dts shift %d\n", sc->dts_shift);
2007 
2008  return 0;
2009 }
2010 
2012 {
2013  AVStream *st;
2014  MOVStreamContext *sc;
2015  unsigned int i, entries;
2016  uint8_t version;
2017  uint32_t grouping_type;
2018 
2019  if (c->fc->nb_streams < 1)
2020  return 0;
2021  st = c->fc->streams[c->fc->nb_streams-1];
2022  sc = st->priv_data;
2023 
2024  version = avio_r8(pb); /* version */
2025  avio_rb24(pb); /* flags */
2026  grouping_type = avio_rl32(pb);
2027  if (grouping_type != MKTAG( 'r','a','p',' '))
2028  return 0; /* only support 'rap ' grouping */
2029  if (version == 1)
2030  avio_rb32(pb); /* grouping_type_parameter */
2031 
2032  entries = avio_rb32(pb);
2033  if (!entries)
2034  return 0;
2035  if (entries >= UINT_MAX / sizeof(*sc->rap_group))
2036  return AVERROR_INVALIDDATA;
2037  sc->rap_group = av_malloc(entries * sizeof(*sc->rap_group));
2038  if (!sc->rap_group)
2039  return AVERROR(ENOMEM);
2040 
2041  for (i = 0; i < entries && !pb->eof_reached; i++) {
2042  sc->rap_group[i].count = avio_rb32(pb); /* sample_count */
2043  sc->rap_group[i].index = avio_rb32(pb); /* group_description_index */
2044  }
2045 
2046  sc->rap_group_count = i;
2047 
2048  return pb->eof_reached ? AVERROR_EOF : 0;
2049 }
2050 
2051 static void mov_build_index(MOVContext *mov, AVStream *st)
2052 {
2053  MOVStreamContext *sc = st->priv_data;
2054  int64_t current_offset;
2055  int64_t current_dts = 0;
2056  unsigned int stts_index = 0;
2057  unsigned int stsc_index = 0;
2058  unsigned int stss_index = 0;
2059  unsigned int stps_index = 0;
2060  unsigned int i, j;
2061  uint64_t stream_size = 0;
2062 
2063  /* adjust first dts according to edit list */
2064  if ((sc->empty_duration || sc->start_time) && mov->time_scale > 0) {
2065  if (sc->empty_duration)
2067  sc->time_offset = sc->start_time - sc->empty_duration;
2068  current_dts = -sc->time_offset;
2069  if (sc->ctts_count>0 && sc->stts_count>0 &&
2070  sc->ctts_data[0].duration / FFMAX(sc->stts_data[0].duration, 1) > 16) {
2071  /* more than 16 frames delay, dts are likely wrong
2072  this happens with files created by iMovie */
2073  sc->wrong_dts = 1;
2074  st->codec->has_b_frames = 1;
2075  }
2076  }
2077 
2078  /* only use old uncompressed audio chunk demuxing when stts specifies it */
2079  if (!(st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
2080  sc->stts_count == 1 && sc->stts_data[0].duration == 1)) {
2081  unsigned int current_sample = 0;
2082  unsigned int stts_sample = 0;
2083  unsigned int sample_size;
2084  unsigned int distance = 0;
2085  unsigned int rap_group_index = 0;
2086  unsigned int rap_group_sample = 0;
2087  int rap_group_present = sc->rap_group_count && sc->rap_group;
2088  int key_off = (sc->keyframe_count && sc->keyframes[0] > 0) || (sc->stps_count && sc->stps_data[0] > 0);
2089 
2090  current_dts -= sc->dts_shift;
2091 
2092  if (!sc->sample_count || st->nb_index_entries)
2093  return;
2094  if (sc->sample_count >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries)
2095  return;
2097  st->nb_index_entries + sc->sample_count,
2098  sizeof(*st->index_entries)) < 0) {
2099  st->nb_index_entries = 0;
2100  return;
2101  }
2103 
2104  for (i = 0; i < sc->chunk_count; i++) {
2105  int64_t next_offset = i+1 < sc->chunk_count ? sc->chunk_offsets[i+1] : INT64_MAX;
2106  current_offset = sc->chunk_offsets[i];
2107  while (stsc_index + 1 < sc->stsc_count &&
2108  i + 1 == sc->stsc_data[stsc_index + 1].first)
2109  stsc_index++;
2110 
2111  if (next_offset > current_offset && sc->sample_size>0 && sc->sample_size < sc->stsz_sample_size &&
2112  sc->stsc_data[stsc_index].count * (int64_t)sc->stsz_sample_size > next_offset - current_offset) {
2113  av_log(mov->fc, AV_LOG_WARNING, "STSZ sample size %d invalid (too large), ignoring\n", sc->stsz_sample_size);
2114  sc->stsz_sample_size = sc->sample_size;
2115  }
2116  if (sc->stsz_sample_size>0 && sc->stsz_sample_size < sc->sample_size) {
2117  av_log(mov->fc, AV_LOG_WARNING, "STSZ sample size %d invalid (too small), ignoring\n", sc->stsz_sample_size);
2118  sc->stsz_sample_size = sc->sample_size;
2119  }
2120 
2121  for (j = 0; j < sc->stsc_data[stsc_index].count; j++) {
2122  int keyframe = 0;
2123  if (current_sample >= sc->sample_count) {
2124  av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
2125  return;
2126  }
2127 
2128  if (!sc->keyframe_absent && (!sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index])) {
2129  keyframe = 1;
2130  if (stss_index + 1 < sc->keyframe_count)
2131  stss_index++;
2132  } else if (sc->stps_count && current_sample+key_off == sc->stps_data[stps_index]) {
2133  keyframe = 1;
2134  if (stps_index + 1 < sc->stps_count)
2135  stps_index++;
2136  }
2137  if (rap_group_present && rap_group_index < sc->rap_group_count) {
2138  if (sc->rap_group[rap_group_index].index > 0)
2139  keyframe = 1;
2140  if (++rap_group_sample == sc->rap_group[rap_group_index].count) {
2141  rap_group_sample = 0;
2142  rap_group_index++;
2143  }
2144  }
2145  if (keyframe)
2146  distance = 0;
2147  sample_size = sc->stsz_sample_size > 0 ? sc->stsz_sample_size : sc->sample_sizes[current_sample];
2148  if (sc->pseudo_stream_id == -1 ||
2149  sc->stsc_data[stsc_index].id - 1 == sc->pseudo_stream_id) {
2150  AVIndexEntry *e = &st->index_entries[st->nb_index_entries++];
2151  e->pos = current_offset;
2152  e->timestamp = current_dts;
2153  e->size = sample_size;
2154  e->min_distance = distance;
2155  e->flags = keyframe ? AVINDEX_KEYFRAME : 0;
2156  av_dlog(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
2157  "size %d, distance %d, keyframe %d\n", st->index, current_sample,
2158  current_offset, current_dts, sample_size, distance, keyframe);
2159  }
2160 
2161  current_offset += sample_size;
2162  stream_size += sample_size;
2163  current_dts += sc->stts_data[stts_index].duration;
2164  distance++;
2165  stts_sample++;
2166  current_sample++;
2167  if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
2168  stts_sample = 0;
2169  stts_index++;
2170  }
2171  }
2172  }
2173  if (st->duration > 0)
2174  st->codec->bit_rate = stream_size*8*sc->time_scale/st->duration;
2175  } else {
2176  unsigned chunk_samples, total = 0;
2177 
2178  // compute total chunk count
2179  for (i = 0; i < sc->stsc_count; i++) {
2180  unsigned count, chunk_count;
2181 
2182  chunk_samples = sc->stsc_data[i].count;
2183  if (i != sc->stsc_count - 1 &&
2184  sc->samples_per_frame && chunk_samples % sc->samples_per_frame) {
2185  av_log(mov->fc, AV_LOG_ERROR, "error unaligned chunk\n");
2186  return;
2187  }
2188 
2189  if (sc->samples_per_frame >= 160) { // gsm
2190  count = chunk_samples / sc->samples_per_frame;
2191  } else if (sc->samples_per_frame > 1) {
2192  unsigned samples = (1024/sc->samples_per_frame)*sc->samples_per_frame;
2193  count = (chunk_samples+samples-1) / samples;
2194  } else {
2195  count = (chunk_samples+1023) / 1024;
2196  }
2197 
2198  if (i < sc->stsc_count - 1)
2199  chunk_count = sc->stsc_data[i+1].first - sc->stsc_data[i].first;
2200  else
2201  chunk_count = sc->chunk_count - (sc->stsc_data[i].first - 1);
2202  total += chunk_count * count;
2203  }
2204 
2205  av_dlog(mov->fc, "chunk count %d\n", total);
2206  if (total >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries)
2207  return;
2209  st->nb_index_entries + total,
2210  sizeof(*st->index_entries)) < 0) {
2211  st->nb_index_entries = 0;
2212  return;
2213  }
2214  st->index_entries_allocated_size = (st->nb_index_entries + total) * sizeof(*st->index_entries);
2215 
2216  // populate index
2217  for (i = 0; i < sc->chunk_count; i++) {
2218  current_offset = sc->chunk_offsets[i];
2219  if (stsc_index + 1 < sc->stsc_count &&
2220  i + 1 == sc->stsc_data[stsc_index + 1].first)
2221  stsc_index++;
2222  chunk_samples = sc->stsc_data[stsc_index].count;
2223 
2224  while (chunk_samples > 0) {
2225  AVIndexEntry *e;
2226  unsigned size, samples;
2227 
2228  if (sc->samples_per_frame >= 160) { // gsm
2229  samples = sc->samples_per_frame;
2230  size = sc->bytes_per_frame;
2231  } else {
2232  if (sc->samples_per_frame > 1) {
2233  samples = FFMIN((1024 / sc->samples_per_frame)*
2234  sc->samples_per_frame, chunk_samples);
2235  size = (samples / sc->samples_per_frame) * sc->bytes_per_frame;
2236  } else {
2237  samples = FFMIN(1024, chunk_samples);
2238  size = samples * sc->sample_size;
2239  }
2240  }
2241 
2242  if (st->nb_index_entries >= total) {
2243  av_log(mov->fc, AV_LOG_ERROR, "wrong chunk count %d\n", total);
2244  return;
2245  }
2246  e = &st->index_entries[st->nb_index_entries++];
2247  e->pos = current_offset;
2248  e->timestamp = current_dts;
2249  e->size = size;
2250  e->min_distance = 0;
2251  e->flags = AVINDEX_KEYFRAME;
2252  av_dlog(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", "
2253  "size %d, duration %d\n", st->index, i, current_offset, current_dts,
2254  size, samples);
2255 
2256  current_offset += size;
2257  current_dts += samples;
2258  chunk_samples -= samples;
2259  }
2260  }
2261  }
2262 }
2263 
2264 static int mov_open_dref(AVIOContext **pb, const char *src, MOVDref *ref,
2265  AVIOInterruptCB *int_cb, int use_absolute_path, AVFormatContext *fc)
2266 {
2267  /* try relative path, we do not try the absolute because it can leak information about our
2268  system to an attacker */
2269  if (ref->nlvl_to > 0 && ref->nlvl_from > 0) {
2270  char filename[1024];
2271  const char *src_path;
2272  int i, l;
2273 
2274  /* find a source dir */
2275  src_path = strrchr(src, '/');
2276  if (src_path)
2277  src_path++;
2278  else
2279  src_path = src;
2280 
2281  /* find a next level down to target */
2282  for (i = 0, l = strlen(ref->path) - 1; l >= 0; l--)
2283  if (ref->path[l] == '/') {
2284  if (i == ref->nlvl_to - 1)
2285  break;
2286  else
2287  i++;
2288  }
2289 
2290  /* compose filename if next level down to target was found */
2291  if (i == ref->nlvl_to - 1 && src_path - src < sizeof(filename)) {
2292  memcpy(filename, src, src_path - src);
2293  filename[src_path - src] = 0;
2294 
2295  for (i = 1; i < ref->nlvl_from; i++)
2296  av_strlcat(filename, "../", 1024);
2297 
2298  av_strlcat(filename, ref->path + l + 1, 1024);
2299 
2300  if (!avio_open2(pb, filename, AVIO_FLAG_READ, int_cb, NULL))
2301  return 0;
2302  }
2303  } else if (use_absolute_path) {
2304  av_log(fc, AV_LOG_WARNING, "Using absolute path on user request, "
2305  "this is a possible security issue\n");
2306  if (!avio_open2(pb, ref->path, AVIO_FLAG_READ, int_cb, NULL))
2307  return 0;
2308  }
2309 
2310  return AVERROR(ENOENT);
2311 }
2312 
2314 {
2315  if (sc->time_scale <= 0) {
2316  av_log(c->fc, AV_LOG_WARNING, "stream %d, timescale not set\n", sc->ffindex);
2317  sc->time_scale = c->time_scale;
2318  if (sc->time_scale <= 0)
2319  sc->time_scale = 1;
2320  }
2321 }
2322 
2324 {
2325  AVStream *st;
2326  MOVStreamContext *sc;
2327  int ret;
2328 
2329  st = avformat_new_stream(c->fc, NULL);
2330  if (!st) return AVERROR(ENOMEM);
2331  st->id = c->fc->nb_streams;
2332  sc = av_mallocz(sizeof(MOVStreamContext));
2333  if (!sc) return AVERROR(ENOMEM);
2334 
2335  st->priv_data = sc;
2337  sc->ffindex = st->index;
2338 
2339  if ((ret = mov_read_default(c, pb, atom)) < 0)
2340  return ret;
2341 
2342  /* sanity checks */
2343  if (sc->chunk_count && (!sc->stts_count || !sc->stsc_count ||
2344  (!sc->sample_size && !sc->sample_count))) {
2345  av_log(c->fc, AV_LOG_ERROR, "stream %d, missing mandatory atoms, broken header\n",
2346  st->index);
2347  return 0;
2348  }
2349 
2350  fix_timescale(c, sc);
2351 
2352  avpriv_set_pts_info(st, 64, 1, sc->time_scale);
2353 
2354  mov_build_index(c, st);
2355 
2356  if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) {
2357  MOVDref *dref = &sc->drefs[sc->dref_id - 1];
2358  if (mov_open_dref(&sc->pb, c->fc->filename, dref, &c->fc->interrupt_callback,
2359  c->use_absolute_path, c->fc) < 0)
2360  av_log(c->fc, AV_LOG_ERROR,
2361  "stream %d, error opening alias: path='%s', dir='%s', "
2362  "filename='%s', volume='%s', nlvl_from=%d, nlvl_to=%d\n",
2363  st->index, dref->path, dref->dir, dref->filename,
2364  dref->volume, dref->nlvl_from, dref->nlvl_to);
2365  } else {
2366  sc->pb = c->fc->pb;
2367  sc->pb_is_copied = 1;
2368  }
2369 
2370  if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2371  if (!st->sample_aspect_ratio.num &&
2372  (st->codec->width != sc->width || st->codec->height != sc->height)) {
2373  st->sample_aspect_ratio = av_d2q(((double)st->codec->height * sc->width) /
2374  ((double)st->codec->width * sc->height), INT_MAX);
2375  }
2376 
2377  if (st->duration > 0)
2379  sc->time_scale*st->nb_frames, st->duration, INT_MAX);
2380 
2381 #if FF_API_R_FRAME_RATE
2382  if (sc->stts_count == 1 || (sc->stts_count == 2 && sc->stts_data[1].count == 1))
2384  sc->time_scale, sc->stts_data[0].duration, INT_MAX);
2385 #endif
2386  }
2387 
2388  // done for ai5q, ai52, ai55, ai1q, ai12 and ai15.
2389  if (!st->codec->extradata_size && st->codec->codec_id == AV_CODEC_ID_H264 &&
2390  st->codec->codec_tag != MKTAG('a', 'v', 'c', '1')) {
2392  }
2393 
2394  switch (st->codec->codec_id) {
2395 #if CONFIG_H261_DECODER
2396  case AV_CODEC_ID_H261:
2397 #endif
2398 #if CONFIG_H263_DECODER
2399  case AV_CODEC_ID_H263:
2400 #endif
2401 #if CONFIG_MPEG4_DECODER
2402  case AV_CODEC_ID_MPEG4:
2403 #endif
2404  st->codec->width = 0; /* let decoder init width/height */
2405  st->codec->height= 0;
2406  break;
2407  }
2408 
2409  /* Do not need those anymore. */
2410  av_freep(&sc->chunk_offsets);
2411  av_freep(&sc->stsc_data);
2412  av_freep(&sc->sample_sizes);
2413  av_freep(&sc->keyframes);
2414  av_freep(&sc->stts_data);
2415  av_freep(&sc->stps_data);
2416  av_freep(&sc->rap_group);
2417 
2418  return 0;
2419 }
2420 
2422 {
2423  int ret;
2424  c->itunes_metadata = 1;
2425  ret = mov_read_default(c, pb, atom);
2426  c->itunes_metadata = 0;
2427  return ret;
2428 }
2429 
2431 {
2432  while (atom.size > 8) {
2433  uint32_t tag = avio_rl32(pb);
2434  atom.size -= 4;
2435  if (tag == MKTAG('h','d','l','r')) {
2436  avio_seek(pb, -8, SEEK_CUR);
2437  atom.size += 8;
2438  return mov_read_default(c, pb, atom);
2439  }
2440  }
2441  return 0;
2442 }
2443 
2445 {
2446  int i;
2447  int width;
2448  int height;
2449  int64_t disp_transform[2];
2450  int display_matrix[3][2];
2451  AVStream *st;
2452  MOVStreamContext *sc;
2453  int version;
2454  int flags;
2455 
2456  if (c->fc->nb_streams < 1)
2457  return 0;
2458  st = c->fc->streams[c->fc->nb_streams-1];
2459  sc = st->priv_data;
2460 
2461  version = avio_r8(pb);
2462  flags = avio_rb24(pb);
2464 
2465  if (version == 1) {
2466  avio_rb64(pb);
2467  avio_rb64(pb);
2468  } else {
2469  avio_rb32(pb); /* creation time */
2470  avio_rb32(pb); /* modification time */
2471  }
2472  st->id = (int)avio_rb32(pb); /* track id (NOT 0 !)*/
2473  avio_rb32(pb); /* reserved */
2474 
2475  /* highlevel (considering edits) duration in movie timebase */
2476  (version == 1) ? avio_rb64(pb) : avio_rb32(pb);
2477  avio_rb32(pb); /* reserved */
2478  avio_rb32(pb); /* reserved */
2479 
2480  avio_rb16(pb); /* layer */
2481  avio_rb16(pb); /* alternate group */
2482  avio_rb16(pb); /* volume */
2483  avio_rb16(pb); /* reserved */
2484 
2485  //read in the display matrix (outlined in ISO 14496-12, Section 6.2.2)
2486  // they're kept in fixed point format through all calculations
2487  // ignore u,v,z b/c we don't need the scale factor to calc aspect ratio
2488  for (i = 0; i < 3; i++) {
2489  display_matrix[i][0] = avio_rb32(pb); // 16.16 fixed point
2490  display_matrix[i][1] = avio_rb32(pb); // 16.16 fixed point
2491  avio_rb32(pb); // 2.30 fixed point (not used)
2492  }
2493 
2494  width = avio_rb32(pb); // 16.16 fixed point track width
2495  height = avio_rb32(pb); // 16.16 fixed point track height
2496  sc->width = width >> 16;
2497  sc->height = height >> 16;
2498 
2499  //Assign clockwise rotate values based on transform matrix so that
2500  //we can compensate for iPhone orientation during capture.
2501 
2502  if (display_matrix[1][0] == -65536 && display_matrix[0][1] == 65536) {
2503  av_dict_set(&st->metadata, "rotate", "90", 0);
2504  }
2505 
2506  if (display_matrix[0][0] == -65536 && display_matrix[1][1] == -65536) {
2507  av_dict_set(&st->metadata, "rotate", "180", 0);
2508  }
2509 
2510  if (display_matrix[1][0] == 65536 && display_matrix[0][1] == -65536) {
2511  av_dict_set(&st->metadata, "rotate", "270", 0);
2512  }
2513 
2514  // transform the display width/height according to the matrix
2515  // skip this if the display matrix is the default identity matrix
2516  // or if it is rotating the picture, ex iPhone 3GS
2517  // to keep the same scale, use [width height 1<<16]
2518  if (width && height &&
2519  ((display_matrix[0][0] != 65536 ||
2520  display_matrix[1][1] != 65536) &&
2521  !display_matrix[0][1] &&
2522  !display_matrix[1][0] &&
2523  !display_matrix[2][0] && !display_matrix[2][1])) {
2524  for (i = 0; i < 2; i++)
2525  disp_transform[i] =
2526  (int64_t) width * display_matrix[0][i] +
2527  (int64_t) height * display_matrix[1][i] +
2528  ((int64_t) display_matrix[2][i] << 16);
2529 
2530  //sample aspect ratio is new width/height divided by old width/height
2532  ((double) disp_transform[0] * height) /
2533  ((double) disp_transform[1] * width), INT_MAX);
2534  }
2535  return 0;
2536 }
2537 
2539 {
2540  MOVFragment *frag = &c->fragment;
2541  MOVTrackExt *trex = NULL;
2542  int flags, track_id, i;
2543 
2544  avio_r8(pb); /* version */
2545  flags = avio_rb24(pb);
2546 
2547  track_id = avio_rb32(pb);
2548  if (!track_id)
2549  return AVERROR_INVALIDDATA;
2550  frag->track_id = track_id;
2551  for (i = 0; i < c->trex_count; i++)
2552  if (c->trex_data[i].track_id == frag->track_id) {
2553  trex = &c->trex_data[i];
2554  break;
2555  }
2556  if (!trex) {
2557  av_log(c->fc, AV_LOG_ERROR, "could not find corresponding trex\n");
2558  return AVERROR_INVALIDDATA;
2559  }
2560 
2562  avio_rb64(pb) : frag->moof_offset;
2563  frag->stsd_id = flags & MOV_TFHD_STSD_ID ? avio_rb32(pb) : trex->stsd_id;
2564 
2565  frag->duration = flags & MOV_TFHD_DEFAULT_DURATION ?
2566  avio_rb32(pb) : trex->duration;
2567  frag->size = flags & MOV_TFHD_DEFAULT_SIZE ?
2568  avio_rb32(pb) : trex->size;
2569  frag->flags = flags & MOV_TFHD_DEFAULT_FLAGS ?
2570  avio_rb32(pb) : trex->flags;
2571  av_dlog(c->fc, "frag flags 0x%x\n", frag->flags);
2572  return 0;
2573 }
2574 
2576 {
2577  c->chapter_track = avio_rb32(pb);
2578  return 0;
2579 }
2580 
2582 {
2583  MOVTrackExt *trex;
2584  int err;
2585 
2586  if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data))
2587  return AVERROR_INVALIDDATA;
2588  if ((err = av_reallocp_array(&c->trex_data, c->trex_count + 1,
2589  sizeof(*c->trex_data))) < 0) {
2590  c->trex_count = 0;
2591  return err;
2592  }
2593 
2594  c->fc->duration = AV_NOPTS_VALUE; // the duration from mvhd is not representing the whole file when fragments are used.
2595 
2596  trex = &c->trex_data[c->trex_count++];
2597  avio_r8(pb); /* version */
2598  avio_rb24(pb); /* flags */
2599  trex->track_id = avio_rb32(pb);
2600  trex->stsd_id = avio_rb32(pb);
2601  trex->duration = avio_rb32(pb);
2602  trex->size = avio_rb32(pb);
2603  trex->flags = avio_rb32(pb);
2604  return 0;
2605 }
2606 
2608 {
2609  MOVFragment *frag = &c->fragment;
2610  AVStream *st = NULL;
2611  MOVStreamContext *sc;
2612  MOVStts *ctts_data;
2613  uint64_t offset;
2614  int64_t dts;
2615  int data_offset = 0;
2616  unsigned entries, first_sample_flags = frag->flags;
2617  int flags, distance, i, found_keyframe = 0, err;
2618 
2619  for (i = 0; i < c->fc->nb_streams; i++) {
2620  if (c->fc->streams[i]->id == frag->track_id) {
2621  st = c->fc->streams[i];
2622  break;
2623  }
2624  }
2625  if (!st) {
2626  av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id);
2627  return AVERROR_INVALIDDATA;
2628  }
2629  sc = st->priv_data;
2630  if (sc->pseudo_stream_id+1 != frag->stsd_id && sc->pseudo_stream_id != -1)
2631  return 0;
2632  avio_r8(pb); /* version */
2633  flags = avio_rb24(pb);
2634  entries = avio_rb32(pb);
2635  av_dlog(c->fc, "flags 0x%x entries %d\n", flags, entries);
2636 
2637  /* Always assume the presence of composition time offsets.
2638  * Without this assumption, for instance, we cannot deal with a track in fragmented movies that meet the following.
2639  * 1) in the initial movie, there are no samples.
2640  * 2) in the first movie fragment, there is only one sample without composition time offset.
2641  * 3) in the subsequent movie fragments, there are samples with composition time offset. */
2642  if (!sc->ctts_count && sc->sample_count)
2643  {
2644  /* Complement ctts table if moov atom doesn't have ctts atom. */
2645  ctts_data = av_realloc(NULL, sizeof(*sc->ctts_data));
2646  if (!ctts_data)
2647  return AVERROR(ENOMEM);
2648  sc->ctts_data = ctts_data;
2649  sc->ctts_data[sc->ctts_count].count = sc->sample_count;
2650  sc->ctts_data[sc->ctts_count].duration = 0;
2651  sc->ctts_count++;
2652  }
2653  if ((uint64_t)entries+sc->ctts_count >= UINT_MAX/sizeof(*sc->ctts_data))
2654  return AVERROR_INVALIDDATA;
2655  if ((err = av_reallocp_array(&sc->ctts_data, entries + sc->ctts_count,
2656  sizeof(*sc->ctts_data))) < 0) {
2657  sc->ctts_count = 0;
2658  return err;
2659  }
2660  if (flags & MOV_TRUN_DATA_OFFSET) data_offset = avio_rb32(pb);
2661  if (flags & MOV_TRUN_FIRST_SAMPLE_FLAGS) first_sample_flags = avio_rb32(pb);
2662  dts = sc->track_end - sc->time_offset;
2663  offset = frag->base_data_offset + data_offset;
2664  distance = 0;
2665  av_dlog(c->fc, "first sample flags 0x%x\n", first_sample_flags);
2666  for (i = 0; i < entries && !pb->eof_reached; i++) {
2667  unsigned sample_size = frag->size;
2668  int sample_flags = i ? frag->flags : first_sample_flags;
2669  unsigned sample_duration = frag->duration;
2670  int keyframe = 0;
2671 
2672  if (flags & MOV_TRUN_SAMPLE_DURATION) sample_duration = avio_rb32(pb);
2673  if (flags & MOV_TRUN_SAMPLE_SIZE) sample_size = avio_rb32(pb);
2674  if (flags & MOV_TRUN_SAMPLE_FLAGS) sample_flags = avio_rb32(pb);
2675  sc->ctts_data[sc->ctts_count].count = 1;
2676  sc->ctts_data[sc->ctts_count].duration = (flags & MOV_TRUN_SAMPLE_CTS) ?
2677  avio_rb32(pb) : 0;
2679  sc->ctts_count++;
2680  if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
2681  keyframe = 1;
2682  else if (!found_keyframe)
2683  keyframe = found_keyframe =
2684  !(sample_flags & (MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC |
2686  if (keyframe)
2687  distance = 0;
2688  av_add_index_entry(st, offset, dts, sample_size, distance,
2689  keyframe ? AVINDEX_KEYFRAME : 0);
2690  av_dlog(c->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
2691  "size %d, distance %d, keyframe %d\n", st->index, sc->sample_count+i,
2692  offset, dts, sample_size, distance, keyframe);
2693  distance++;
2694  dts += sample_duration;
2695  offset += sample_size;
2696  sc->data_size += sample_size;
2697  }
2698 
2699  if (pb->eof_reached)
2700  return AVERROR_EOF;
2701 
2702  frag->moof_offset = offset;
2703  st->duration = sc->track_end = dts + sc->time_offset;
2704  return 0;
2705 }
2706 
2707 /* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
2708 /* like the files created with Adobe Premiere 5.0, for samples see */
2709 /* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
2711 {
2712  int err;
2713 
2714  if (atom.size < 8)
2715  return 0; /* continue */
2716  if (avio_rb32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
2717  avio_skip(pb, atom.size - 4);
2718  return 0;
2719  }
2720  atom.type = avio_rl32(pb);
2721  atom.size -= 8;
2722  if (atom.type != MKTAG('m','d','a','t')) {
2723  avio_skip(pb, atom.size);
2724  return 0;
2725  }
2726  err = mov_read_mdat(c, pb, atom);
2727  return err;
2728 }
2729 
2731 {
2732 #if CONFIG_ZLIB
2733  AVIOContext ctx;
2734  uint8_t *cmov_data;
2735  uint8_t *moov_data; /* uncompressed data */
2736  long cmov_len, moov_len;
2737  int ret = -1;
2738 
2739  avio_rb32(pb); /* dcom atom */
2740  if (avio_rl32(pb) != MKTAG('d','c','o','m'))
2741  return AVERROR_INVALIDDATA;
2742  if (avio_rl32(pb) != MKTAG('z','l','i','b')) {
2743  av_log(c->fc, AV_LOG_ERROR, "unknown compression for cmov atom !\n");
2744  return AVERROR_INVALIDDATA;
2745  }
2746  avio_rb32(pb); /* cmvd atom */
2747  if (avio_rl32(pb) != MKTAG('c','m','v','d'))
2748  return AVERROR_INVALIDDATA;
2749  moov_len = avio_rb32(pb); /* uncompressed size */
2750  cmov_len = atom.size - 6 * 4;
2751 
2752  cmov_data = av_malloc(cmov_len);
2753  if (!cmov_data)
2754  return AVERROR(ENOMEM);
2755  moov_data = av_malloc(moov_len);
2756  if (!moov_data) {
2757  av_free(cmov_data);
2758  return AVERROR(ENOMEM);
2759  }
2760  avio_read(pb, cmov_data, cmov_len);
2761  if (uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
2762  goto free_and_return;
2763  if (ffio_init_context(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
2764  goto free_and_return;
2765  atom.type = MKTAG('m','o','o','v');
2766  atom.size = moov_len;
2767  ret = mov_read_default(c, &ctx, atom);
2768 free_and_return:
2769  av_free(moov_data);
2770  av_free(cmov_data);
2771  return ret;
2772 #else
2773  av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
2774  return AVERROR(ENOSYS);
2775 #endif
2776 }
2777 
2778 /* edit list atom */
2780 {
2781  MOVStreamContext *sc;
2782  int i, edit_count, version, edit_start_index = 0;
2783  int unsupported = 0;
2784 
2785  if (c->fc->nb_streams < 1 || c->ignore_editlist)
2786  return 0;
2787  sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
2788 
2789  version = avio_r8(pb); /* version */
2790  avio_rb24(pb); /* flags */
2791  edit_count = avio_rb32(pb); /* entries */
2792 
2793  if ((uint64_t)edit_count*12+8 > atom.size)
2794  return AVERROR_INVALIDDATA;
2795 
2796  av_dlog(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, edit_count);
2797  for (i=0; i<edit_count; i++){
2798  int64_t time;
2799  int64_t duration;
2800  int rate;
2801  if (version == 1) {
2802  duration = avio_rb64(pb);
2803  time = avio_rb64(pb);
2804  } else {
2805  duration = avio_rb32(pb); /* segment duration */
2806  time = (int32_t)avio_rb32(pb); /* media time */
2807  }
2808  rate = avio_rb32(pb);
2809  if (i == 0 && time == -1) {
2810  sc->empty_duration = duration;
2811  edit_start_index = 1;
2812  } else if (i == edit_start_index && time >= 0)
2813  sc->start_time = time;
2814  else
2815  unsupported = 1;
2816 
2817  av_dlog(c->fc, "duration=%"PRId64" time=%"PRId64" rate=%f\n",
2818  duration, time, rate / 65536.0);
2819  }
2820 
2821  if (unsupported)
2822  av_log(c->fc, AV_LOG_WARNING, "multiple edit list entries, "
2823  "a/v desync might occur, patch welcome\n");
2824 
2825  return 0;
2826 }
2827 
2829 {
2830  MOVStreamContext *sc;
2831 
2832  if (c->fc->nb_streams < 1)
2833  return AVERROR_INVALIDDATA;
2834  sc = c->fc->streams[c->fc->nb_streams - 1]->priv_data;
2835  sc->timecode_track = avio_rb32(pb);
2836  return 0;
2837 }
2838 
2840 {
2841  int ret;
2842  uint8_t uuid[16];
2843  static const uint8_t uuid_isml_manifest[] = {
2844  0xa5, 0xd4, 0x0b, 0x30, 0xe8, 0x14, 0x11, 0xdd,
2845  0xba, 0x2f, 0x08, 0x00, 0x20, 0x0c, 0x9a, 0x66
2846  };
2847 
2848  if (atom.size < sizeof(uuid) || atom.size == INT64_MAX)
2849  return AVERROR_INVALIDDATA;
2850 
2851  ret = avio_read(pb, uuid, sizeof(uuid));
2852  if (ret < 0) {
2853  return ret;
2854  } else if (ret != sizeof(uuid)) {
2855  return AVERROR_INVALIDDATA;
2856  }
2857  if (!memcmp(uuid, uuid_isml_manifest, sizeof(uuid))) {
2858  uint8_t *buffer, *ptr;
2859  char *endptr;
2860  size_t len = atom.size - sizeof(uuid);
2861 
2862  if (len < 4) {
2863  return AVERROR_INVALIDDATA;
2864  }
2865  ret = avio_skip(pb, 4); // zeroes
2866  len -= 4;
2867 
2868  buffer = av_mallocz(len + 1);
2869  if (!buffer) {
2870  return AVERROR(ENOMEM);
2871  }
2872  ret = avio_read(pb, buffer, len);
2873  if (ret < 0) {
2874  av_free(buffer);
2875  return ret;
2876  } else if (ret != len) {
2877  av_free(buffer);
2878  return AVERROR_INVALIDDATA;
2879  }
2880 
2881  ptr = buffer;
2882  while ((ptr = av_stristr(ptr, "systemBitrate=\"")) != NULL) {
2883  ptr += sizeof("systemBitrate=\"") - 1;
2884  c->bitrates_count++;
2885  c->bitrates = av_realloc_f(c->bitrates, c->bitrates_count, sizeof(*c->bitrates));
2886  if (!c->bitrates) {
2887  c->bitrates_count = 0;
2888  av_free(buffer);
2889  return AVERROR(ENOMEM);
2890  }
2891  errno = 0;
2892  ret = strtol(ptr, &endptr, 10);
2893  if (ret < 0 || errno || *endptr != '"') {
2894  c->bitrates[c->bitrates_count - 1] = 0;
2895  } else {
2896  c->bitrates[c->bitrates_count - 1] = ret;
2897  }
2898  }
2899 
2900  av_free(buffer);
2901  }
2902  return 0;
2903 }
2904 
2906 { MKTAG('A','C','L','R'), mov_read_avid },
2907 { MKTAG('A','P','R','G'), mov_read_avid },
2908 { MKTAG('A','A','L','P'), mov_read_avid },
2909 { MKTAG('A','R','E','S'), mov_read_ares },
2910 { MKTAG('a','v','s','s'), mov_read_avss },
2911 { MKTAG('c','h','p','l'), mov_read_chpl },
2912 { MKTAG('c','o','6','4'), mov_read_stco },
2913 { MKTAG('c','t','t','s'), mov_read_ctts }, /* composition time to sample */
2914 { MKTAG('d','i','n','f'), mov_read_default },
2915 { MKTAG('d','r','e','f'), mov_read_dref },
2916 { MKTAG('e','d','t','s'), mov_read_default },
2917 { MKTAG('e','l','s','t'), mov_read_elst },
2918 { MKTAG('e','n','d','a'), mov_read_enda },
2919 { MKTAG('f','i','e','l'), mov_read_fiel },
2920 { MKTAG('f','t','y','p'), mov_read_ftyp },
2921 { MKTAG('g','l','b','l'), mov_read_glbl },
2922 { MKTAG('h','d','l','r'), mov_read_hdlr },
2923 { MKTAG('i','l','s','t'), mov_read_ilst },
2924 { MKTAG('j','p','2','h'), mov_read_jp2h },
2925 { MKTAG('m','d','a','t'), mov_read_mdat },
2926 { MKTAG('m','d','h','d'), mov_read_mdhd },
2927 { MKTAG('m','d','i','a'), mov_read_default },
2928 { MKTAG('m','e','t','a'), mov_read_meta },
2929 { MKTAG('m','i','n','f'), mov_read_default },
2930 { MKTAG('m','o','o','f'), mov_read_moof },
2931 { MKTAG('m','o','o','v'), mov_read_moov },
2932 { MKTAG('m','v','e','x'), mov_read_default },
2933 { MKTAG('m','v','h','d'), mov_read_mvhd },
2934 { MKTAG('S','M','I',' '), mov_read_svq3 },
2935 { MKTAG('a','l','a','c'), mov_read_alac }, /* alac specific atom */
2936 { MKTAG('a','v','c','C'), mov_read_glbl },
2937 { MKTAG('p','a','s','p'), mov_read_pasp },
2938 { MKTAG('s','t','b','l'), mov_read_default },
2939 { MKTAG('s','t','c','o'), mov_read_stco },
2940 { MKTAG('s','t','p','s'), mov_read_stps },
2941 { MKTAG('s','t','r','f'), mov_read_strf },
2942 { MKTAG('s','t','s','c'), mov_read_stsc },
2943 { MKTAG('s','t','s','d'), mov_read_stsd }, /* sample description */
2944 { MKTAG('s','t','s','s'), mov_read_stss }, /* sync sample */
2945 { MKTAG('s','t','s','z'), mov_read_stsz }, /* sample size */
2946 { MKTAG('s','t','t','s'), mov_read_stts },
2947 { MKTAG('s','t','z','2'), mov_read_stsz }, /* compact sample size */
2948 { MKTAG('t','k','h','d'), mov_read_tkhd }, /* track header */
2949 { MKTAG('t','f','h','d'), mov_read_tfhd }, /* track fragment header */
2950 { MKTAG('t','r','a','k'), mov_read_trak },
2951 { MKTAG('t','r','a','f'), mov_read_default },
2952 { MKTAG('t','r','e','f'), mov_read_default },
2953 { MKTAG('t','m','c','d'), mov_read_tmcd },
2954 { MKTAG('c','h','a','p'), mov_read_chap },
2955 { MKTAG('t','r','e','x'), mov_read_trex },
2956 { MKTAG('t','r','u','n'), mov_read_trun },
2957 { MKTAG('u','d','t','a'), mov_read_default },
2958 { MKTAG('w','a','v','e'), mov_read_wave },
2959 { MKTAG('e','s','d','s'), mov_read_esds },
2960 { MKTAG('d','a','c','3'), mov_read_dac3 }, /* AC-3 info */
2961 { MKTAG('d','e','c','3'), mov_read_dec3 }, /* EAC-3 info */
2962 { MKTAG('w','i','d','e'), mov_read_wide }, /* place holder */
2963 { MKTAG('w','f','e','x'), mov_read_wfex },
2964 { MKTAG('c','m','o','v'), mov_read_cmov },
2965 { MKTAG('c','h','a','n'), mov_read_chan }, /* channel layout */
2966 { MKTAG('d','v','c','1'), mov_read_dvc1 },
2967 { MKTAG('s','b','g','p'), mov_read_sbgp },
2968 { MKTAG('h','v','c','C'), mov_read_glbl },
2969 { MKTAG('u','u','i','d'), mov_read_uuid },
2970 { MKTAG('C','i','n', 0x8e), mov_read_targa_y216 },
2971 { 0, NULL }
2972 };
2973 
2975 {
2976  int64_t total_size = 0;
2977  MOVAtom a;
2978  int i;
2979 
2980  if (atom.size < 0)
2981  atom.size = INT64_MAX;
2982  while (total_size + 8 <= atom.size && !url_feof(pb)) {
2983  int (*parse)(MOVContext*, AVIOContext*, MOVAtom) = NULL;
2984  a.size = atom.size;
2985  a.type=0;
2986  if (atom.size >= 8) {
2987  a.size = avio_rb32(pb);
2988  a.type = avio_rl32(pb);
2989  if (atom.type != MKTAG('r','o','o','t') &&
2990  atom.type != MKTAG('m','o','o','v'))
2991  {
2992  if (a.type == MKTAG('t','r','a','k') || a.type == MKTAG('m','d','a','t'))
2993  {
2994  av_log(c->fc, AV_LOG_ERROR, "Broken file, trak/mdat not at top-level\n");
2995  avio_skip(pb, -8);
2996  return 0;
2997  }
2998  }
2999  total_size += 8;
3000  if (a.size == 1) { /* 64 bit extended size */
3001  a.size = avio_rb64(pb) - 8;
3002  total_size += 8;
3003  }
3004  }
3005  av_dlog(c->fc, "type: %08x '%.4s' parent:'%.4s' sz: %"PRId64" %"PRId64" %"PRId64"\n",
3006  a.type, (char*)&a.type, (char*)&atom.type, a.size, total_size, atom.size);
3007  if (a.size == 0) {
3008  a.size = atom.size - total_size + 8;
3009  }
3010  a.size -= 8;
3011  if (a.size < 0)
3012  break;
3013  a.size = FFMIN(a.size, atom.size - total_size);
3014 
3015  for (i = 0; mov_default_parse_table[i].type; i++)
3016  if (mov_default_parse_table[i].type == a.type) {
3017  parse = mov_default_parse_table[i].parse;
3018  break;
3019  }
3020 
3021  // container is user data
3022  if (!parse && (atom.type == MKTAG('u','d','t','a') ||
3023  atom.type == MKTAG('i','l','s','t')))
3025 
3026  if (!parse) { /* skip leaf atoms data */
3027  avio_skip(pb, a.size);
3028  } else {
3029  int64_t start_pos = avio_tell(pb);
3030  int64_t left;
3031  int err = parse(c, pb, a);
3032  if (err < 0)
3033  return err;
3034  if (c->found_moov && c->found_mdat &&
3035  ((!pb->seekable || c->fc->flags & AVFMT_FLAG_IGNIDX) ||
3036  start_pos + a.size == avio_size(pb))) {
3037  if (!pb->seekable || c->fc->flags & AVFMT_FLAG_IGNIDX)
3038  c->next_root_atom = start_pos + a.size;
3039  return 0;
3040  }
3041  left = a.size - avio_tell(pb) + start_pos;
3042  if (left > 0) /* skip garbage at atom end */
3043  avio_skip(pb, left);
3044  else if (left < 0) {
3045  av_log(c->fc, AV_LOG_WARNING,
3046  "overread end of atom '%.4s' by %"PRId64" bytes\n",
3047  (char*)&a.type, -left);
3048  avio_seek(pb, left, SEEK_CUR);
3049  }
3050  }
3051 
3052  total_size += a.size;
3053  }
3054 
3055  if (total_size < atom.size && atom.size < 0x7ffff)
3056  avio_skip(pb, atom.size - total_size);
3057 
3058  return 0;
3059 }
3060 
3061 static int mov_probe(AVProbeData *p)
3062 {
3063  int64_t offset;
3064  uint32_t tag;
3065  int score = 0;
3066  int moov_offset = -1;
3067 
3068  /* check file header */
3069  offset = 0;
3070  for (;;) {
3071  /* ignore invalid offset */
3072  if ((offset + 8) > (unsigned int)p->buf_size)
3073  break;
3074  tag = AV_RL32(p->buf + offset + 4);
3075  switch(tag) {
3076  /* check for obvious tags */
3077  case MKTAG('m','o','o','v'):
3078  moov_offset = offset + 4;
3079  case MKTAG('j','P',' ',' '): /* jpeg 2000 signature */
3080  case MKTAG('m','d','a','t'):
3081  case MKTAG('p','n','o','t'): /* detect movs with preview pics like ew.mov and april.mov */
3082  case MKTAG('u','d','t','a'): /* Packet Video PVAuthor adds this and a lot of more junk */
3083  case MKTAG('f','t','y','p'):
3084  if (AV_RB32(p->buf+offset) < 8 &&
3085  (AV_RB32(p->buf+offset) != 1 ||
3086  offset + 12 > (unsigned int)p->buf_size ||
3087  AV_RB64(p->buf+offset + 8) == 0)) {
3088  score = FFMAX(score, AVPROBE_SCORE_EXTENSION);
3089  } else {
3090  score = AVPROBE_SCORE_MAX;
3091  }
3092  offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset;
3093  break;
3094  /* those are more common words, so rate then a bit less */
3095  case MKTAG('e','d','i','w'): /* xdcam files have reverted first tags */
3096  case MKTAG('w','i','d','e'):
3097  case MKTAG('f','r','e','e'):
3098  case MKTAG('j','u','n','k'):
3099  case MKTAG('p','i','c','t'):
3100  score = FFMAX(score, AVPROBE_SCORE_MAX - 5);
3101  offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset;
3102  break;
3103  case MKTAG(0x82,0x82,0x7f,0x7d):
3104  case MKTAG('s','k','i','p'):
3105  case MKTAG('u','u','i','d'):
3106  case MKTAG('p','r','f','l'):
3107  /* if we only find those cause probedata is too small at least rate them */
3108  score = FFMAX(score, AVPROBE_SCORE_EXTENSION);
3109  offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset;
3110  break;
3111  default:
3112  offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset;
3113  }
3114  }
3115  if(score > AVPROBE_SCORE_MAX - 50 && moov_offset != -1) {
3116  /* moov atom in the header - we should make sure that this is not a
3117  * MOV-packed MPEG-PS */
3118  offset = moov_offset;
3119 
3120  while(offset < (p->buf_size - 16)){ /* Sufficient space */
3121  /* We found an actual hdlr atom */
3122  if(AV_RL32(p->buf + offset ) == MKTAG('h','d','l','r') &&
3123  AV_RL32(p->buf + offset + 8) == MKTAG('m','h','l','r') &&
3124  AV_RL32(p->buf + offset + 12) == MKTAG('M','P','E','G')){
3125  av_log(NULL, AV_LOG_WARNING, "Found media data tag MPEG indicating this is a MOV-packed MPEG-PS.\n");
3126  /* We found a media handler reference atom describing an
3127  * MPEG-PS-in-MOV, return a
3128  * low score to force expanding the probe window until
3129  * mpegps_probe finds what it needs */
3130  return 5;
3131  }else
3132  /* Keep looking */
3133  offset+=2;
3134  }
3135  }
3136 
3137  return score;
3138 }
3139 
3140 // must be done after parsing all trak because there's no order requirement
3142 {
3143  MOVContext *mov = s->priv_data;
3144  AVStream *st = NULL;
3145  MOVStreamContext *sc;
3146  int64_t cur_pos;
3147  int i;
3148 
3149  for (i = 0; i < s->nb_streams; i++)
3150  if (s->streams[i]->id == mov->chapter_track) {
3151  st = s->streams[i];
3152  break;
3153  }
3154  if (!st) {
3155  av_log(s, AV_LOG_ERROR, "Referenced QT chapter track not found\n");
3156  return;
3157  }
3158 
3159  st->discard = AVDISCARD_ALL;
3160  sc = st->priv_data;
3161  cur_pos = avio_tell(sc->pb);
3162 
3163  for (i = 0; i < st->nb_index_entries; i++) {
3164  AVIndexEntry *sample = &st->index_entries[i];
3165  int64_t end = i+1 < st->nb_index_entries ? st->index_entries[i+1].timestamp : st->duration;
3166  uint8_t *title;
3167  uint16_t ch;
3168  int len, title_len;
3169 
3170  if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
3171  av_log(s, AV_LOG_ERROR, "Chapter %d not found in file\n", i);
3172  goto finish;
3173  }
3174 
3175  // the first two bytes are the length of the title
3176  len = avio_rb16(sc->pb);
3177  if (len > sample->size-2)
3178  continue;
3179  title_len = 2*len + 1;
3180  if (!(title = av_mallocz(title_len)))
3181  goto finish;
3182 
3183  // The samples could theoretically be in any encoding if there's an encd
3184  // atom following, but in practice are only utf-8 or utf-16, distinguished
3185  // instead by the presence of a BOM
3186  if (!len) {
3187  title[0] = 0;
3188  } else {
3189  ch = avio_rb16(sc->pb);
3190  if (ch == 0xfeff)
3191  avio_get_str16be(sc->pb, len, title, title_len);
3192  else if (ch == 0xfffe)
3193  avio_get_str16le(sc->pb, len, title, title_len);
3194  else {
3195  AV_WB16(title, ch);
3196  if (len == 1 || len == 2)
3197  title[len] = 0;
3198  else
3199  avio_get_str(sc->pb, INT_MAX, title + 2, len - 1);
3200  }
3201  }
3202 
3203  avpriv_new_chapter(s, i, st->time_base, sample->timestamp, end, title);
3204  av_freep(&title);
3205  }
3206 finish:
3207  avio_seek(sc->pb, cur_pos, SEEK_SET);
3208 }
3209 
3211  uint32_t value, int flags)
3212 {
3213  AVTimecode tc;
3214  char buf[AV_TIMECODE_STR_SIZE];
3215  AVRational rate = {st->codec->time_base.den,
3216  st->codec->time_base.num};
3217  int ret = av_timecode_init(&tc, rate, flags, 0, s);
3218  if (ret < 0)
3219  return ret;
3220  av_dict_set(&st->metadata, "timecode",
3221  av_timecode_make_string(&tc, buf, value), 0);
3222  return 0;
3223 }
3224 
3226 {
3227  MOVStreamContext *sc = st->priv_data;
3228  int flags = 0;
3229  int64_t cur_pos = avio_tell(sc->pb);
3230  uint32_t value;
3231 
3232  if (!st->nb_index_entries)
3233  return -1;
3234 
3235  avio_seek(sc->pb, st->index_entries->pos, SEEK_SET);
3236  value = avio_rb32(s->pb);
3237 
3238  if (sc->tmcd_flags & 0x0001) flags |= AV_TIMECODE_FLAG_DROPFRAME;
3239  if (sc->tmcd_flags & 0x0002) flags |= AV_TIMECODE_FLAG_24HOURSMAX;
3240  if (sc->tmcd_flags & 0x0004) flags |= AV_TIMECODE_FLAG_ALLOWNEGATIVE;
3241 
3242  /* Assume Counter flag is set to 1 in tmcd track (even though it is likely
3243  * not the case) and thus assume "frame number format" instead of QT one.
3244  * No sample with tmcd track can be found with a QT timecode at the moment,
3245  * despite what the tmcd track "suggests" (Counter flag set to 0 means QT
3246  * format). */
3247  parse_timecode_in_framenum_format(s, st, value, flags);
3248 
3249  avio_seek(sc->pb, cur_pos, SEEK_SET);
3250  return 0;
3251 }
3252 
3254 {
3255  MOVContext *mov = s->priv_data;
3256  int i, j;
3257 
3258  for (i = 0; i < s->nb_streams; i++) {
3259  AVStream *st = s->streams[i];
3260  MOVStreamContext *sc = st->priv_data;
3261 
3262  av_freep(&sc->ctts_data);
3263  for (j = 0; j < sc->drefs_count; j++) {
3264  av_freep(&sc->drefs[j].path);
3265  av_freep(&sc->drefs[j].dir);
3266  }
3267  av_freep(&sc->drefs);
3268  if (!sc->pb_is_copied)
3269  avio_close(sc->pb);
3270  sc->pb = NULL;
3271  av_freep(&sc->chunk_offsets);
3272  av_freep(&sc->keyframes);
3273  av_freep(&sc->sample_sizes);
3274  av_freep(&sc->stps_data);
3275  av_freep(&sc->stsc_data);
3276  av_freep(&sc->stts_data);
3277  }
3278 
3279  if (mov->dv_demux) {
3280  for (i = 0; i < mov->dv_fctx->nb_streams; i++) {
3281  av_freep(&mov->dv_fctx->streams[i]->codec);
3282  av_freep(&mov->dv_fctx->streams[i]);
3283  }
3284  av_freep(&mov->dv_fctx);
3285  av_freep(&mov->dv_demux);
3286  }
3287 
3288  av_freep(&mov->trex_data);
3289  av_freep(&mov->bitrates);
3290 
3291  return 0;
3292 }
3293 
3294 static int tmcd_is_referenced(AVFormatContext *s, int tmcd_id)
3295 {
3296  int i;
3297 
3298  for (i = 0; i < s->nb_streams; i++) {
3299  AVStream *st = s->streams[i];
3300  MOVStreamContext *sc = st->priv_data;
3301 
3302  if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
3303  sc->timecode_track == tmcd_id)
3304  return 1;
3305  }
3306  return 0;
3307 }
3308 
3309 /* look for a tmcd track not referenced by any video track, and export it globally */
3311 {
3312  int i;
3313 
3314  for (i = 0; i < s->nb_streams; i++) {
3315  AVStream *st = s->streams[i];
3316 
3317  if (st->codec->codec_tag == MKTAG('t','m','c','d') &&
3318  !tmcd_is_referenced(s, i + 1)) {
3319  AVDictionaryEntry *tcr = av_dict_get(st->metadata, "timecode", NULL, 0);
3320  if (tcr) {
3321  av_dict_set(&s->metadata, "timecode", tcr->value, 0);
3322  break;
3323  }
3324  }
3325  }
3326 }
3327 
3329 {
3330  MOVContext *mov = s->priv_data;
3331  AVIOContext *pb = s->pb;
3332  int i, j, err;
3333  MOVAtom atom = { AV_RL32("root") };
3334 
3335  mov->fc = s;
3336  /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
3337  if (pb->seekable)
3338  atom.size = avio_size(pb);
3339  else
3340  atom.size = INT64_MAX;
3341 
3342  /* check MOV header */
3343  if ((err = mov_read_default(mov, pb, atom)) < 0) {
3344  av_log(s, AV_LOG_ERROR, "error reading header: %d\n", err);
3345  mov_read_close(s);
3346  return err;
3347  }
3348  if (!mov->found_moov) {
3349  av_log(s, AV_LOG_ERROR, "moov atom not found\n");
3350  mov_read_close(s);
3351  return AVERROR_INVALIDDATA;
3352  }
3353  av_dlog(mov->fc, "on_parse_exit_offset=%"PRId64"\n", avio_tell(pb));
3354 
3355  if (pb->seekable) {
3356  if (mov->chapter_track > 0)
3357  mov_read_chapters(s);
3358  for (i = 0; i < s->nb_streams; i++)
3359  if (s->streams[i]->codec->codec_tag == AV_RL32("tmcd"))
3360  mov_read_timecode_track(s, s->streams[i]);
3361  }
3362 
3363  /* copy timecode metadata from tmcd tracks to the related video streams */
3364  for (i = 0; i < s->nb_streams; i++) {
3365  AVStream *st = s->streams[i];
3366  MOVStreamContext *sc = st->priv_data;
3367  if (sc->timecode_track > 0) {
3368  AVDictionaryEntry *tcr;
3369  int tmcd_st_id = -1;
3370 
3371  for (j = 0; j < s->nb_streams; j++)
3372  if (s->streams[j]->id == sc->timecode_track)
3373  tmcd_st_id = j;
3374 
3375  if (tmcd_st_id < 0 || tmcd_st_id == i)
3376  continue;
3377  tcr = av_dict_get(s->streams[tmcd_st_id]->metadata, "timecode", NULL, 0);
3378  if (tcr)
3379  av_dict_set(&st->metadata, "timecode", tcr->value, 0);
3380  }
3381  }
3383 
3384  for (i = 0; i < s->nb_streams; i++) {
3385  AVStream *st = s->streams[i];
3386  MOVStreamContext *sc = st->priv_data;
3387  fix_timescale(mov, sc);
3389  st->skip_samples = sc->start_pad;
3390  }
3391  }
3392 
3393  if (mov->trex_data) {
3394  for (i = 0; i < s->nb_streams; i++) {
3395  AVStream *st = s->streams[i];
3396  MOVStreamContext *sc = st->priv_data;
3397  if (st->duration > 0)
3398  st->codec->bit_rate = sc->data_size * 8 * sc->time_scale / st->duration;
3399  }
3400  }
3401 
3402  for (i = 0; i < mov->bitrates_count && i < s->nb_streams; i++) {
3403  if (mov->bitrates[i]) {
3404  s->streams[i]->codec->bit_rate = mov->bitrates[i];
3405  }
3406  }
3407 
3408  return 0;
3409 }
3410 
3412 {
3413  AVIndexEntry *sample = NULL;
3414  int64_t best_dts = INT64_MAX;
3415  int i;
3416  for (i = 0; i < s->nb_streams; i++) {
3417  AVStream *avst = s->streams[i];
3418  MOVStreamContext *msc = avst->priv_data;
3419  if (msc->pb && msc->current_sample < avst->nb_index_entries) {
3420  AVIndexEntry *current_sample = &avst->index_entries[msc->current_sample];
3421  int64_t dts = av_rescale(current_sample->timestamp, AV_TIME_BASE, msc->time_scale);
3422  av_dlog(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
3423  if (!sample || (!s->pb->seekable && current_sample->pos < sample->pos) ||
3424  (s->pb->seekable &&
3425  ((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb &&
3426  ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
3427  (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) {
3428  sample = current_sample;
3429  best_dts = dts;
3430  *st = avst;
3431  }
3432  }
3433  }
3434  return sample;
3435 }
3436 
3438 {
3439  MOVContext *mov = s->priv_data;
3440  MOVStreamContext *sc;
3442  AVStream *st = NULL;
3443  int ret;
3444  mov->fc = s;
3445  retry:
3446  sample = mov_find_next_sample(s, &st);
3447  if (!sample) {
3448  mov->found_mdat = 0;
3449  if (!mov->next_root_atom)
3450  return AVERROR_EOF;
3451  avio_seek(s->pb, mov->next_root_atom, SEEK_SET);
3452  mov->next_root_atom = 0;
3453  if (mov_read_default(mov, s->pb, (MOVAtom){ AV_RL32("root"), INT64_MAX }) < 0 ||
3454  url_feof(s->pb))
3455  return AVERROR_EOF;
3456  av_dlog(s, "read fragments, offset 0x%"PRIx64"\n", avio_tell(s->pb));
3457  goto retry;
3458  }
3459  sc = st->priv_data;
3460  /* must be done just before reading, to avoid infinite loop on sample */
3461  sc->current_sample++;
3462 
3463  if (mov->next_root_atom) {
3464  sample->pos = FFMIN(sample->pos, mov->next_root_atom);
3465  sample->size = FFMIN(sample->size, (mov->next_root_atom - sample->pos));
3466  }
3467 
3468  if (st->discard != AVDISCARD_ALL) {
3469  if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
3470  av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
3471  sc->ffindex, sample->pos);
3472  return AVERROR_INVALIDDATA;
3473  }
3474  ret = av_get_packet(sc->pb, pkt, sample->size);
3475  if (ret < 0)
3476  return ret;
3477  if (sc->has_palette) {
3478  uint8_t *pal;
3479 
3481  if (!pal) {
3482  av_log(mov->fc, AV_LOG_ERROR, "Cannot append palette to packet\n");
3483  } else {
3484  memcpy(pal, sc->palette, AVPALETTE_SIZE);
3485  sc->has_palette = 0;
3486  }
3487  }
3488 #if CONFIG_DV_DEMUXER
3489  if (mov->dv_demux && sc->dv_audio_container) {
3490  avpriv_dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size, pkt->pos);
3491  av_free(pkt->data);
3492  pkt->size = 0;
3493  ret = avpriv_dv_get_packet(mov->dv_demux, pkt);
3494  if (ret < 0)
3495  return ret;
3496  }
3497 #endif
3498  }
3499 
3500  pkt->stream_index = sc->ffindex;
3501  pkt->dts = sample->timestamp;
3502  if (sc->ctts_data && sc->ctts_index < sc->ctts_count) {
3503  pkt->pts = pkt->dts + sc->dts_shift + sc->ctts_data[sc->ctts_index].duration;
3504  /* update ctts context */
3505  sc->ctts_sample++;
3506  if (sc->ctts_index < sc->ctts_count &&
3507  sc->ctts_data[sc->ctts_index].count == sc->ctts_sample) {
3508  sc->ctts_index++;
3509  sc->ctts_sample = 0;
3510  }
3511  if (sc->wrong_dts)
3512  pkt->dts = AV_NOPTS_VALUE;
3513  } else {
3514  int64_t next_dts = (sc->current_sample < st->nb_index_entries) ?
3516  pkt->duration = next_dts - pkt->dts;
3517  pkt->pts = pkt->dts;
3518  }
3519  if (st->discard == AVDISCARD_ALL)
3520  goto retry;
3521  pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? AV_PKT_FLAG_KEY : 0;
3522  pkt->pos = sample->pos;
3523  av_dlog(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n",
3524  pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
3525  return 0;
3526 }
3527 
3528 static int mov_seek_stream(AVFormatContext *s, AVStream *st, int64_t timestamp, int flags)
3529 {
3530  MOVStreamContext *sc = st->priv_data;
3531  int sample, time_sample;
3532  int i;
3533 
3534  sample = av_index_search_timestamp(st, timestamp, flags);
3535  av_dlog(s, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
3536  if (sample < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
3537  sample = 0;
3538  if (sample < 0) /* not sure what to do */
3539  return AVERROR_INVALIDDATA;
3540  sc->current_sample = sample;
3541  av_dlog(s, "stream %d, found sample %d\n", st->index, sc->current_sample);
3542  /* adjust ctts index */
3543  if (sc->ctts_data) {
3544  time_sample = 0;
3545  for (i = 0; i < sc->ctts_count; i++) {
3546  int next = time_sample + sc->ctts_data[i].count;
3547  if (next > sc->current_sample) {
3548  sc->ctts_index = i;
3549  sc->ctts_sample = sc->current_sample - time_sample;
3550  break;
3551  }
3552  time_sample = next;
3553  }
3554  }
3555  return sample;
3556 }
3557 
3558 static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
3559 {
3560  AVStream *st;
3561  int64_t seek_timestamp, timestamp;
3562  int sample;
3563  int i;
3564 
3565  if (stream_index >= s->nb_streams)
3566  return AVERROR_INVALIDDATA;
3567 
3568  st = s->streams[stream_index];
3569  sample = mov_seek_stream(s, st, sample_time, flags);
3570  if (sample < 0)
3571  return sample;
3572 
3573  /* adjust seek timestamp to found sample timestamp */
3574  seek_timestamp = st->index_entries[sample].timestamp;
3575 
3576  for (i = 0; i < s->nb_streams; i++) {
3577  MOVStreamContext *sc = s->streams[i]->priv_data;
3578  st = s->streams[i];
3579  st->skip_samples = (sample_time <= 0) ? sc->start_pad : 0;
3580 
3581  if (stream_index == i)
3582  continue;
3583 
3584  timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
3585  mov_seek_stream(s, st, timestamp, flags);
3586  }
3587  return 0;
3588 }
3589 
3590 static const AVOption options[] = {
3591  {"use_absolute_path",
3592  "allow using absolute path when opening alias, this is a possible security issue",
3593  offsetof(MOVContext, use_absolute_path), FF_OPT_TYPE_INT, {.i64 = 0},
3595  {"ignore_editlist", "", offsetof(MOVContext, ignore_editlist), FF_OPT_TYPE_INT, {.i64 = 0},
3597  {NULL}
3598 };
3599 
3600 static const AVClass mov_class = {
3601  .class_name = "mov,mp4,m4a,3gp,3g2,mj2",
3602  .item_name = av_default_item_name,
3603  .option = options,
3604  .version = LIBAVUTIL_VERSION_INT,
3605 };
3606 
3608  .name = "mov,mp4,m4a,3gp,3g2,mj2",
3609  .long_name = NULL_IF_CONFIG_SMALL("QuickTime / MOV"),
3610  .priv_data_size = sizeof(MOVContext),
3611  .read_probe = mov_probe,
3616  .priv_class = &mov_class,
3618 };
int chapter_track
Definition: isom.h:161
static int mov_read_targa_y216(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:1029
int itunes_metadata
metadata are itunes style
Definition: isom.h:160
int * bitrates
bitrates read before streams creation
Definition: isom.h:165
static int mov_read_moof(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:802
const char const char void * val
Definition: avisynth_c.h:671
static int mov_read_esds(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:628
const char * s
Definition: avisynth_c.h:668
static int mov_read_enda(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:911
Bytestream IO Context.
Definition: avio.h:68
#define PUT_UTF8(val, tmp, PUT_BYTE)
#define AVERROR_PATCHWELCOME
int size
#define MP4ESDescrTag
Definition: isom.h:176
static int mov_read_dec3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:657
uint32_t tmcd_flags
tmcd track flags
Definition: isom.h:140
unsigned int rap_group_count
Definition: isom.h:143
void ff_mp4_parse_es_descr(AVIOContext *pb, int *es_id)
Definition: isom.c:412
AVIOInterruptCB interrupt_callback
Custom interrupt callbacks for the I/O layer.
Definition: avformat.h:1161
static int mov_read_wide(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:2710
AVOption.
Definition: opt.h:253
MOVTrackExt * trex_data
Definition: isom.h:158
#define AV_DISPOSITION_ATTACHED_PIC
The stream is stored in the file as an attached picture/&quot;cover art&quot; (e.g.
Definition: avformat.h:644
unsigned track_id
Definition: isom.h:73
int av_add_index_entry(AVStream *st, int64_t pos, int64_t timestamp, int size, int distance, int flags)
Add an index entry into a sorted list.
Definition: utils.c:1675
#define MOV_TFHD_DEFAULT_DURATION
Definition: isom.h:183
static AVIndexEntry * mov_find_next_sample(AVFormatContext *s, AVStream **st)
Definition: mov.c:3411
enum AVCodecID id
Definition: mxfenc.c:90
static int mov_read_chpl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:412
enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
Definition: utils.c:2556
unsigned int samples_per_frame
Definition: isom.h:125
const char * name
A comma separated list of short names for the format.
Definition: avformat.h:478
static void mov_build_index(MOVContext *mov, AVStream *st)
Definition: mov.c:2051
int dv_audio_container
Definition: isom.h:126
Definition: isom.h:45
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: avcodec.h:4153
uint64_t base_data_offset
Definition: isom.h:74
#define LIBAVUTIL_VERSION_INT
Definition: avcodec.h:820
int64_t pos
byte position in stream, -1 if unknown
Definition: avcodec.h:1092
int avio_close(AVIOContext *s)
Close the resource accessed by the AVIOContext s and free it.
Definition: aviobuf.c:860
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:3922
const char * g
Definition: vf_curves.c:104
int64_t pos
Definition: avformat.h:609
unsigned int stsc_count
Definition: isom.h:106
int has_palette
Definition: isom.h:138
static int mov_metadata_gnre(MOVContext *c, AVIOContext *pb, unsigned len, const char *key)
Definition: mov.c:114
int64_t avio_size(AVIOContext *s)
Get the filesize.
Definition: aviobuf.c:261
static int read_seek(AVFormatContext *ctx, int stream_index, int64_t timestamp, int flags)
Definition: libcdio.c:153
#define AV_WL32(p, darg)
Definition: intreadwrite.h:282
AVDictionaryEntry * av_dict_get(AVDictionary *m, const char *key, const AVDictionaryEntry *prev, int flags)
Get a dictionary entry with matching key.
Definition: dict.c:39
AVCodecContext * codec
Codec context associated with this stream.
Definition: avformat.h:686
static int mov_read_trak(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:2323
AVRational sample_aspect_ratio
sample aspect ratio (0 if unknown)
Definition: avformat.h:733
int num
numerator
Definition: rational.h:44
unsigned int avio_rl32(AVIOContext *s)
Definition: aviobuf.c:593
int index
stream index in AVFormatContext
Definition: avformat.h:668
int size
Definition: avcodec.h:1064
const char * b
Definition: vf_curves.c:105
#define MOV_TRUN_SAMPLE_CTS
Definition: isom.h:193
static int tmcd_is_referenced(AVFormatContext *s, int tmcd_id)
Definition: mov.c:3294
void av_log(void *avcl, int level, const char *fmt,...) av_printf_format(3
Send the specified message to the log if the level is less than or equal to the current av_log_level...
#define tc
Definition: regdef.h:69
int av_timecode_init(AVTimecode *tc, AVRational rate, int flags, int frame_start, void *log_ctx)
Init a timecode struct with the passed parameters.
Definition: timecode.c:182
static const uint8_t ff_qt_default_palette_256[256 *3]
Definition: qtpalette.h:54
av_dlog(ac->avr,"%d samples - audio_convert: %s to %s (%s)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt), use_generic?ac->func_descr_generic:ac->func_descr)
#define CODEC_FLAG2_DROP_FRAME_TIMECODE
timecode is in drop frame format. DEPRECATED!!!!
Definition: avcodec.h:723
int version
Definition: avisynth_c.h:666
int16_t audio_cid
stsd audio compression id
Definition: isom.h:128
unsigned int avio_rb32(AVIOContext *s)
Definition: aviobuf.c:624
discard all
Definition: avcodec.h:618
int height
tkhd height
Definition: isom.h:135
static int mov_open_dref(AVIOContext **pb, const char *src, MOVDref *ref, AVIOInterruptCB *int_cb, int use_absolute_path, AVFormatContext *fc)
Definition: mov.c:2264
static int mov_read_udta_string(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:289
#define sample
uint32_t type
Definition: isom.h:66
static int mov_read_uuid(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:2839
int block_align
number of bytes per packet if constant and known or 0 Used by some WAV based audio codecs...
Definition: avcodec.h:1910
MOVStsc * stsc_data
Definition: isom.h:107
static int mov_read_mvhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:870
int ctts_index
Definition: isom.h:110
unsigned stsd_id
Definition: isom.h:84
int avio_r8(AVIOContext *s)
Definition: aviobuf.c:471
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
Definition: avcodec.h:1254
int found_moov
&#39;moov&#39; atom has been found
Definition: isom.h:152
static int mov_read_stps(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:1728
static void export_orphan_timecode(AVFormatContext *s)
Definition: mov.c:3310
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
Definition: avcodec.h:1265
void av_freep(void *ptr)
Free a memory block which has been allocated with av_malloc(z)() or av_realloc() and set the pointer ...
Definition: mem.c:234
unsigned flags
Definition: isom.h:87
#define MOV_TKHD_FLAG_ENABLED
Definition: isom.h:205
AVChapter * avpriv_new_chapter(AVFormatContext *s, int id, AVRational time_base, int64_t start, int64_t end, const char *title)
Add a new chapter.
Definition: utils.c:3435
int isom
1 if file is ISO Media (mp4/3gp)
Definition: isom.h:156
enum AVAudioServiceType audio_service_type
Type of service that the audio stream conveys.
Definition: avcodec.h:1948
if((e=av_dict_get(options,"", NULL, AV_DICT_IGNORE_SUFFIX)))
Definition: avfilter.c:965
int found_mdat
&#39;mdat&#39; atom has been found
Definition: isom.h:153
AVDictionary * metadata
Definition: avformat.h:735
int width
tkhd width
Definition: isom.h:134
unsigned drefs_count
Definition: isom.h:129
Format I/O context.
Definition: avformat.h:968
int avio_get_str(AVIOContext *pb, int maxlen, char *buf, int buflen)
Read a string from pb into buf.
Definition: aviobuf.c:647
static int mov_probe(AVProbeData *p)
Definition: mov.c:3061
static int mov_read_header(AVFormatContext *s)
Definition: mov.c:3328
char filename[64]
Definition: isom.h:61
static int parse(AVCodecParserContext *s, AVCodecContext *avctx, const uint8_t **poutbuf, int *poutbuf_size, const uint8_t *buf, int buf_size)
Definition: vp3_parser.c:23
MOVDref * drefs
Definition: isom.h:130
void void avpriv_request_sample(void *avc, const char *msg,...) av_printf_format(2
Log a generic warning message about a missing feature.
static int mov_read_moov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:784
#define AV_RB16(x)
Definition: intreadwrite.h:232
const char * av_default_item_name(void *ctx)
Return the context name.
Definition: log.c:145
int avio_open2(AVIOContext **s, const char *url, int flags, const AVIOInterruptCB *int_cb, AVDictionary **options)
Create and initialize a AVIOContext for accessing the resource indicated by url.
Definition: aviobuf.c:843
int first
Definition: isom.h:51
uint8_t
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:55
unsigned int sample_count
Definition: isom.h:114
const AVCodecTag ff_codec_movvideo_tags[]
Definition: isom.c:66
int count
Definition: isom.h:52
int dts_shift
dts shift when ctts is negative
Definition: isom.h:136
static const uint8_t offset[511][2]
Definition: vf_uspp.c:58
static av_cold int end(AVCodecContext *avctx)
Definition: avrndec.c:67
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
Definition: avformat.h:336
int id
Format-specific stream ID.
Definition: avformat.h:674
enum AVStreamParseType need_parsing
Definition: avformat.h:812
AVInputFormat ff_mov_demuxer
Definition: mov.c:3607
unsigned int count
Definition: isom.h:91
static int mov_read_cmov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:2730
uint64_t avio_rb64(AVIOContext *s)
Definition: aviobuf.c:689
int16_t nlvl_to
Definition: isom.h:62
#define AV_CH_LOW_FREQUENCY
char volume[28]
Definition: isom.h:60
static int mov_metadata_int8_no_padding(MOVContext *c, AVIOContext *pb, unsigned len, const char *key)
Definition: mov.c:103
static int mov_read_wfex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:704
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
Definition: avio.h:248
const char data[16]
Definition: mxf.c:68
int avio_get_str16be(AVIOContext *pb, int maxlen, char *buf, int buflen)
#define AV_OPT_FLAG_VIDEO_PARAM
Definition: opt.h:287
DVDemuxContext * avpriv_dv_init_demux(AVFormatContext *s)
Definition: dv.c:325
#define AVFMT_FLAG_IGNIDX
Ignore index.
Definition: avformat.h:1047
#define AV_DISPOSITION_DEFAULT
Definition: avformat.h:622
int av_reallocp(void *ptr, size_t size)
Allocate or reallocate a block of memory.
Definition: mem.c:183
#define MOV_TRUN_SAMPLE_SIZE
Definition: isom.h:191
uint32_t tag
Definition: movenc.c:961
#define AV_WB32(p, darg)
Definition: intreadwrite.h:265
AVIndexEntry * index_entries
Only used if the format does not support seeking natively.
Definition: avformat.h:823
void * priv_data
Definition: avformat.h:687
bitstream reader API header.
static av_cold int read_close(AVFormatContext *ctx)
Definition: libcdio.c:145
timecode wraps after 24 hours
Definition: timecode.h:37
static int mov_read_hdlr(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:554
int bits_per_coded_sample
bits per sample/pixel from the demuxer (needed for huffyuv).
Definition: avcodec.h:2563
static int64_t duration
Definition: ffplay.c:306
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
Definition: utils.c:3348
unsigned int avio_rb24(AVIOContext *s)
Definition: aviobuf.c:617
int64_t start_time
start time of the media
Definition: isom.h:121
int duration
Duration of this packet in AVStream-&gt;time_base units, 0 if unknown.
Definition: avcodec.h:1085
const OptionDef options[]
Definition: ffserver.c:4682
enum AVCodecID video_codec_id
Forced video codec_id.
Definition: avformat.h:1082
int current_sample
Definition: isom.h:123
#define MOV_TFHD_DEFAULT_SIZE
Definition: isom.h:184
int av_get_packet(AVIOContext *s, AVPacket *pkt, int size)
Allocate and read the payload of a packet and initialize its fields with default values.
Definition: utils.c:200
unsigned track_id
Definition: isom.h:83
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: avcodec.h:1113
int64_t time_offset
time offset of the edit list entries
Definition: isom.h:122
unsigned int keyframe_count
Definition: isom.h:117
static const uint8_t ff_qt_default_palette_4[4 *3]
Definition: qtpalette.h:28
static int mov_read_custom_metadata(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:131
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq) av_const
Rescale a 64-bit integer by 2 rational numbers.
Definition: mathematics.c:130
const uint16_t avpriv_ac3_channel_layout_tab[8]
Map audio coding mode (acmod) to channel layout mask.
Definition: ac3tab.c:87
static int mov_read_fiel(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:943
static int mov_read_stsd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:1677
#define U(x)
Definition: vp56_arith.h:37
Callback for checking whether to abort blocking functions.
Definition: avio.h:51
int ff_mp4_read_dec_config_descr(AVFormatContext *fc, AVStream *st, AVIOContext *pb)
Definition: isom.c:437
int av_reallocp_array(void *ptr, size_t nmemb, size_t size)
Definition: mem.c:210
AVCodecID
Identify the syntax and semantics of the bitstream.
Definition: avcodec.h:102
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: avcodec.h:4147
#define AV_DICT_MATCH_CASE
Definition: dict.h:67
int has_b_frames
Size of the frame reordering buffer in the decoder.
Definition: avcodec.h:1427
int av_get_bits_per_sample(enum AVCodecID codec_id)
Return codec bits per sample.
Definition: utils.c:2928
void av_free(void *ptr)
Free a memory block which has been allocated with av_malloc(z)() or av_realloc(). ...
Definition: mem.c:219
unsigned int ctts_count
Definition: isom.h:104
int av_index_search_timestamp(AVStream *st, int64_t timestamp, int flags)
Get the index for a specific timestamp.
Definition: utils.c:1718
const AVIOInterruptCB int_cb
Definition: ffmpeg.c:422
static int mov_read_pasp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:719
static int mov_read_elst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:2779
void * priv_data
Format private data.
Definition: avformat.h:988
char filename[1024]
input or output filename
Definition: avformat.h:1018
#define AVIO_FLAG_READ
read-only
Definition: avio.h:332
static int mov_read_ctts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:1955
char * av_stristr(const char *haystack, const char *needle)
Locate the first case-independent occurrence in the string haystack of the string needle...
Definition: avstring.c:55
int ff_get_wav_header(AVIOContext *pb, AVCodecContext *codec, int size)
Definition: riffdec.c:88
static int mov_read_svq3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:1059
static int mov_read_wave(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:1064
int64_t timestamp
Timestamp in AVStream.time_base units, preferably the time from which on correctly decoded frames are...
Definition: avformat.h:610
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:151
const char * r
Definition: vf_curves.c:103
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: avcodec.h:4168
int * keyframes
Definition: isom.h:118
preferred ID for decoding MPEG audio layer 1, 2 or 3
Definition: avcodec.h:398
int av_get_channel_layout_nb_channels(uint64_t channel_layout)
Return the number of channels in the channel layout.
AVFormatContext * fc
Definition: isom.h:149
static int mov_read_trun(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:2607
char codec_name[32]
Definition: avcodec.h:1156
timecode is drop frame
Definition: timecode.h:36
int ctts_sample
Definition: isom.h:111
int skip_samples
Number of samples to skip at the start of the frame decoded from the next packet. ...
Definition: avformat.h:868
enum AVCodecID codec_id
Definition: mov_chan.c:433
int keyframe_absent
Definition: isom.h:116
AVRational avg_frame_rate
Average framerate.
Definition: avformat.h:740
const AVCodecTag ff_codec_wav_tags[]
Definition: riff.c:358
int16_t nlvl_from
Definition: isom.h:62
#define MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES
Definition: isom.h:203
int min_distance
Minimum distance between this and the previous keyframe, used to avoid unneeded searching.
Definition: avformat.h:619
#define av_unused
Disable warnings about deprecated features This is useful for sections of code kept for backward comp...
Definition: avcodec.h:697
static void mov_metadata_creation_time(AVDictionary **metadata, int64_t time)
Definition: mov.c:809
uint8_t * av_packet_new_side_data(AVPacket *pkt, enum AVPacketSideDataType type, int size)
Allocate new information of a packet.
Definition: avpacket.c:298
const AVCodecTag ff_codec_movsubtitle_tags[]
Definition: isom.c:308
#define MIN_DATA_ENTRY_BOX_SIZE
Definition: mov.c:444
int flags
A combination of AV_PKT_FLAG values.
Definition: avcodec.h:1069
uint64_t channel_layout
Audio channel layout.
Definition: avcodec.h:1934
static float distance(float x, float y, int band)
static int mov_read_tkhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:2444
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 buf_size
Size of buf except extra allocated bytes.
Definition: avformat.h:337
static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:2974
#define FF_INPUT_BUFFER_PADDING_SIZE
Required number of additionally allocated bytes at the end of the input bitstream for decoding...
Definition: avcodec.h:580
unsigned int nb_streams
A list of all streams in the file.
Definition: avformat.h:1015
static int mov_read_mdhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:825
static int mov_seek_stream(AVFormatContext *s, AVStream *st, int64_t timestamp, int flags)
Definition: mov.c:3528
static int mov_metadata_track_or_disc_number(MOVContext *c, AVIOContext *pb, unsigned len, const char *key)
Definition: mov.c:68
static int mov_read_stts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:1883
int seekable
A combination of AVIO_SEEKABLE_ flags or 0 when the stream is not seekable.
Definition: avio.h:117
int bit_rate
the average bitrate
Definition: avcodec.h:1204
AVRational av_d2q(double d, int max) av_const
Convert a double precision floating point number to a rational.
Definition: rational.c:105
static int mov_read_chap(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:2575
Opaque data information usually continuous.
Definition: avcodec.h:2233
int64_t av_rescale(int64_t a, int64_t b, int64_t c) av_const
Rescale a 64-bit integer with rounding to nearest.
Definition: mathematics.c:118
#define AV_TIME_BASE
Internal time base represented as integer.
Definition: avcodec.h:2284
void * av_realloc(void *ptr, size_t size) 1(2)
Allocate or reallocate a block of memory.
Definition: mem.c:141
full parsing and repack
Definition: avformat.h:599
const AVCodecTag ff_codec_bmp_tags[]
Definition: riff.c:32
static int mov_read_ftyp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:752
#define AV_DICT_DONT_STRDUP_VAL
Take ownership of a value that&#39;s been allocated with av_malloc() and chilren.
Definition: dict.h:72
static int mov_read_tmcd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:2828
static int read_probe(AVProbeData *pd)
Definition: jvdec.c:54
char * dir
Definition: isom.h:59
ret
Definition: avfilter.c:961
int width
picture width / height.
Definition: avcodec.h:1314
#define FFMIN3(a, b, c)
Definition: avcodec.h:926
static uint16_t fc[]
Definition: dcaenc.h:41
#define AVPROBE_SCORE_EXTENSION
score for file extension
Definition: avformat.h:341
AVStream ** streams
Definition: avformat.h:1016
int id
Definition: isom.h:53
void * av_malloc(size_t size) av_malloc_attrib 1(1)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...
Definition: mem.c:73
static int mov_read_jp2h(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:1019
internal header for RIFF based (de)muxers do NOT include this in end user applications ...
int32_t
static int mov_read_timecode_track(AVFormatContext *s, AVStream *st)
Definition: mov.c:3225
static int mov_read_tfhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:2538
static int mov_read_ares(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:1043
char * value
Definition: dict.h:82
#define AVPALETTE_SIZE
Definition: avcodec.h:4499
char * av_timecode_make_string(const AVTimecode *tc, char *buf, int framenum)
Load timecode string in buf.
Definition: timecode.c:84
#define FFMIN(a, b)
Definition: avcodec.h:925
static int mov_parse_stsd_data(MOVContext *c, AVIOContext *pb, AVStream *st, MOVStreamContext *sc, int size)
Definition: mov.c:1477
char * path
Definition: isom.h:58
int time_scale
Definition: isom.h:119
static char buffer[20]
Definition: seek-test.c:31
int64_t empty_duration
empty duration of the first edit list entry
Definition: isom.h:120
uint64_t moof_offset
Definition: isom.h:75
MOVStts * ctts_data
Definition: isom.h:105
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
Definition: aviobuf.c:199
#define MOV_TRUN_SAMPLE_DURATION
Definition: isom.h:190
unsigned size
Definition: isom.h:86
int ignore_editlist
Definition: isom.h:163
int64_t * chunk_offsets
Definition: isom.h:101
static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
Definition: mov.c:3437
static int mov_read_close(AVFormatContext *s)
Definition: mov.c:3253
unsigned int index
Definition: isom.h:92
static int mov_read_glbl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
This function reads atom content and puts data in extradata without tag nor size unlike mov_read_extr...
Definition: mov.c:1096
int ff_mov_read_chan(AVFormatContext *s, AVIOContext *pb, AVStream *st, int64_t size)
Read &#39;chan&#39; tag from the input stream.
Definition: mov_chan.c:547
int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:606
static int read_header(FFV1Context *f)
Definition: ffv1dec.c:592
int64_t duration
duration of the longest track
Definition: isom.h:151
int ff_mov_lang_to_iso639(unsigned code, char to[4])
Definition: isom.c:368
Stream structure.
Definition: avformat.h:667
static const ColorEntry color_table[]
Definition: parseutils.c:193
static int mov_read_covr(MOVContext *c, AVIOContext *pb, int type, int len)
Definition: mov.c:236
unsigned duration
Definition: isom.h:85
DVDemuxContext * dv_demux
Definition: isom.h:154
#define AV_RB64(x)
Definition: intreadwrite.h:292
int timecode_track
Definition: isom.h:132
int * sample_sizes
Definition: isom.h:115
static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
Definition: mov.c:3558
static const uint32_t mac_to_unicode[128]
Definition: mov.c:199
static int width
Definition: utils.c:158
static int mov_read_dref(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:445
AVS_Value src
Definition: avisynth_c.h:523
enum AVMediaType codec_type
Definition: avcodec.h:1154
unsigned duration
Definition: isom.h:77
#define MP4DecConfigDescrTag
Definition: isom.h:177
MOVSbgp * rap_group
Definition: isom.h:144
int avpriv_dv_produce_packet(DVDemuxContext *c, AVPacket *pkt, uint8_t *buf, int buf_size, int64_t pos)
Definition: dv.c:365
#define FFMAX(a, b)
Definition: avcodec.h:923
const AVCodecTag ff_codec_movaudio_tags[]
Definition: isom.c:255
int duration
Definition: isom.h:47
enum AVCodecID codec_id
Definition: avcodec.h:1157
static void mov_read_chapters(AVFormatContext *s)
Definition: mov.c:3141
int sample_rate
samples per second
Definition: avcodec.h:1873
static void mov_parse_stsd_video(MOVContext *c, AVIOContext *pb, AVStream *st, MOVStreamContext *sc)
Definition: mov.c:1263
unsigned int stsz_sample_size
always contains sample size from stsz atom
Definition: isom.h:113
main external API structure.
Definition: avcodec.h:1146
static int mov_read_dac3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:633
unsigned trex_count
Definition: isom.h:159
#define MOV_TRUN_FIRST_SAMPLE_FLAGS
Definition: isom.h:189
int avio_get_str16le(AVIOContext *pb, int maxlen, char *buf, int buflen)
Read a UTF-16 string from pb and convert it to UTF-8.
#define AV_TIMECODE_STR_SIZE
Definition: timecode.h:33
static int mov_read_ilst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:2421
void ff_generate_avci_extradata(AVStream *st)
Generate standard extradata for AVC-Intra based on width/height and field order.
Definition: utils.c:4194
void * av_realloc_f(void *ptr, size_t nelem, size_t elsize)
Allocate or reallocate a block of memory.
Definition: mem.c:168
unsigned int codec_tag
fourcc (LSB first, so &quot;ABCD&quot; -&gt; (&#39;D&#39;&lt;&lt;24) + (&#39;C&#39;&lt;&lt;16) + (&#39;B&#39;&lt;&lt;8) + &#39;A&#39;).
Definition: avcodec.h:1172
int64_t data_size
Definition: isom.h:139
int ff_alloc_extradata(AVCodecContext *avctx, int size)
Allocate extradata with additional FF_INPUT_BUFFER_PADDING_SIZE at end which is always set to 0...
Definition: utils.c:2690
AVIOContext * pb
I/O context.
Definition: avformat.h:1001
void * buf
Definition: avisynth_c.h:594
int extradata_size
Definition: avcodec.h:1255
static int read_packet(AVFormatContext *ctx, AVPacket *pkt)
Definition: libcdio.c:114
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:62
uint32_t type
Definition: isom.h:57
int nb_index_entries
Definition: avformat.h:825
BYTE int const BYTE int int int height
Definition: avisynth_c.h:713
MOVStts * stts_data
Definition: isom.h:103
double value
Definition: eval.c:83
Describe the class of an AVClass context structure.
Definition: log.h:50
#define MKTAG(a, b, c, d)
int count
Definition: isom.h:46
enum AVCodecID ff_get_pcm_codec_id(int bps, int flt, int be, int sflags)
Select a PCM codec based on the given parameters.
Definition: utils.c:2570
rational number numerator/denominator
Definition: rational.h:43
uint8_t * data
Definition: avcodec.h:1063
MOVFragment fragment
current fragment in moof atom
Definition: isom.h:157
static int init_get_bits(GetBitContext *s, const uint8_t *buffer, int bit_size)
Initialize GetBitContext.
Definition: get_bits.h:405
AVFieldOrder
Definition: avcodec.h:1128
int64_t track_end
used for dts generation in fragmented movie files
Definition: isom.h:141
Definition: isom.h:65
static const uint8_t ff_qt_default_palette_16[16 *3]
Definition: qtpalette.h:35
AVDictionary * metadata
Definition: avformat.h:1128
static void mov_parse_stsd_audio(MOVContext *c, AVIOContext *pb, AVStream *st, MOVStreamContext *sc)
Definition: mov.c:1374
static int mov_read_mac_string(MOVContext *c, AVIOContext *pb, int len, char *dst, int dstlen)
Definition: mov.c:218
#define MOV_TFHD_DEFAULT_FLAGS
Definition: isom.h:185
#define snprintf
Definition: snprintf.h:34
#define AV_RB8(x)
Definition: intreadwrite.h:387
#define AVINDEX_KEYFRAME
Definition: avformat.h:616
#define AV_WB16(p, darg)
Definition: intreadwrite.h:237
int pb_is_copied
Definition: isom.h:97
#define MOV_TRUN_SAMPLE_FLAGS
Definition: isom.h:192
This structure contains the data a format has to probe a file.
Definition: avformat.h:334
int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries)
Definition: mov.c:1602
static unsigned int get_bits_long(GetBitContext *s, int n)
Read 0-32 bits.
Definition: get_bits.h:332
#define MOV_TFHD_STSD_ID
Definition: isom.h:182
int64_t avio_skip(AVIOContext *s, int64_t offset)
Skip given number of bytes forward.
Definition: aviobuf.c:256
#define type
static int mov_read_stss(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:1761
AVFormatContext * dv_fctx
Definition: isom.h:155
size_t av_strlcat(char *dst, const char *src, size_t size)
Append the string src to the string dst, but to a total length of no more than size - 1 bytes...
Definition: avstring.c:92
#define FFABS(a)
Definition: avcodec.h:920
static int flags
Definition: cpu.c:45
#define AVERROR_EOF
static void mov_update_dts_shift(MOVStreamContext *sc, int duration)
Definition: mov.c:1948
static int mov_read_meta(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:2430
#define AVPROBE_SCORE_MAX
maximum score
Definition: avformat.h:342
unsigned * stps_data
partial sync sample for mpeg-2 open gop
Definition: isom.h:109
#define AV_OPT_FLAG_DECODING_PARAM
a generic parameter which can be set by the user for demuxing or decoding
Definition: opt.h:284
int(* parse)(MOVContext *ctx, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:63
static int mov_read_mdat(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:743
static int mov_metadata_int8_bypass_padding(MOVContext *c, AVIOContext *pb, unsigned len, const char *key)
Definition: mov.c:87
int64_t duration
Decoding: duration of the stream, in stream time base.
Definition: avformat.h:720
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
Definition: aviobuf.c:480
int url_feof(AVIOContext *s)
feof() equivalent for AVIOContext.
Definition: aviobuf.c:280
static int mov_read_avid(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:1024
int start_pad
amount of samples to skip due to enc-dec delay
Definition: isom.h:142
int ff_mp4_read_descr(AVFormatContext *fc, AVIOContext *pb, int *tag)
Definition: isom.c:403
AVIOContext * pb
Definition: isom.h:96
static float t
Definition: muxing.c:123
static int mov_read_strf(MOVContext *c, AVIOContext *pb, MOVAtom atom)
An strf atom is a BITMAPINFOHEADER struct.
Definition: mov.c:1152
unsigned int bytes_per_frame
Definition: isom.h:124
static void finish(void)
Definition: ffhash.c:61
unsigned flags
Definition: isom.h:79
int bitrates_count
Definition: isom.h:166
int wrong_dts
dts are wrong due to huge ctts offset (iMovie files)
Definition: isom.h:133
static av_always_inline double av_int2double(uint64_t i)
Reinterpret a 64-bit integer as a double.
Definition: intfloat.h:60
#define MOV_TFHD_BASE_DATA_OFFSET
Definition: isom.h:181
int64_t size
Definition: isom.h:67
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:71
static const MOVParseTableEntry mov_default_parse_table[]
Definition: mov.c:2905
static int parse_timecode_in_framenum_format(AVFormatContext *s, AVStream *st, uint32_t value, int flags)
Definition: mov.c:3210
static double c[64]
static int mov_read_chan(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:685
unsigned int stps_count
Definition: isom.h:108
Main libavformat public API header.
int disposition
AV_DISPOSITION_* bit field.
Definition: avformat.h:724
unsigned int chunk_count
Definition: isom.h:100
AVFormatContext * avformat_alloc_context(void)
Allocate an AVFormatContext.
Definition: options.c:106
static int mov_codec_id(AVStream *st, uint32_t format)
Definition: mov.c:1230
int64_t nb_frames
number of frames in this stream if known or 0
Definition: avformat.h:722
int den
denominator
Definition: rational.h:45
unsigned bps
Definition: movenc.c:962
int avpriv_dv_get_packet(DVDemuxContext *c, AVPacket *pkt)
Definition: dv.c:348
static int mov_read_stco(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:1173
uint32_t palette[256]
Definition: isom.h:137
static int mov_skip_multiple_stsd(MOVContext *c, AVIOContext *pb, int codec_tag, int format, int size)
Definition: mov.c:1575
unsigned stsd_id
Definition: isom.h:76
unsigned int index_entries_allocated_size
Definition: avformat.h:826
#define AV_RB32(x)
Definition: intreadwrite.h:258
#define AVERROR_INVALIDDATA
static int mov_finalize_stsd_codec(MOVContext *c, AVIOContext *pb, AVStream *st, MOVStreamContext *sc)
Definition: mov.c:1502
int eof_reached
true if eof reached
Definition: avio.h:96
static int mov_read_avss(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:1014
as in Berlin toast format
Definition: avcodec.h:415
#define AV_RL32(x)
Definition: intreadwrite.h:275
int len
int channels
number of audio channels
Definition: avcodec.h:1874
static int mov_read_extradata(MOVContext *c, AVIOContext *pb, MOVAtom atom, enum AVCodecID codec_id)
Definition: mov.c:978
unsigned int stts_count
Definition: isom.h:102
unsigned int sample_size
may contain value calculated from stsd or value from stsz atom
Definition: isom.h:112
uint32_t type
Definition: mov.c:62
static const AVClass mov_class
Definition: mov.c:3600
enum AVCodecID ff_mov_get_lpcm_codec_id(int bps, int flags)
Compute codec id for &#39;lpcm&#39; tag.
Definition: mov.c:1220
#define AVERROR(e)
int flags2
CODEC_FLAG2_*.
Definition: avcodec.h:1241
#define MOV_TRUN_DATA_OFFSET
Definition: isom.h:188
unsigned int avio_rb16(AVIOContext *s)
Definition: aviobuf.c:609
int64_t next_root_atom
offset of the next root atom
Definition: isom.h:164
int time_scale
Definition: isom.h:150
int64_t dts
Decompression timestamp in AVStream-&gt;time_base units; the time at which the packet is decompressed...
Definition: avcodec.h:1062
static int mov_read_dvc1(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:1123
int pseudo_stream_id
-1 means demux all ids
Definition: isom.h:127
int64_t duration
Decoding: duration of the stream, in AV_TIME_BASE fractional seconds.
Definition: avformat.h:1033
int ffindex
AVStream index.
Definition: isom.h:98
int use_absolute_path
Definition: isom.h:162
void INT64 INT64 count
Definition: avisynth_c.h:594
enum AVFieldOrder field_order
Field order.
Definition: avcodec.h:1870
static int mov_read_trex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:2581
void INT64 start
Definition: avisynth_c.h:594
static int mov_read_stsc(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:1688
#define AVFMT_NO_BYTE_SEEK
Format does not allow seeking by bytes.
Definition: avformat.h:362
unsigned size
Definition: isom.h:78
negative time values are allowed
Definition: timecode.h:38
static int mov_read_alac(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:1009
static AVPacket pkt
Definition: demuxing.c:52
static int mov_read_stsz(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:1805
int stream_index
Definition: avcodec.h:1065
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
Definition: avformat.h:703
static int unsupported(AVCodecContext *avctx)
Definition: iff.c:645
static int mov_metadata_raw(MOVContext *c, AVIOContext *pb, unsigned len, const char *key)
Definition: mov.c:278
enum AVDiscard discard
Selects which packets can be discarded at will and do not need to be demuxed.
Definition: avformat.h:726
static void fix_timescale(MOVContext *c, MOVStreamContext *sc)
Definition: mov.c:2313
AVRational r_frame_rate
Real base framerate of the stream.
Definition: avformat.h:839
#define ID3v1_GENRE_MAX
Definition: id3v1.h:29
const char *const ff_id3v1_genre_str[ID3v1_GENRE_MAX+1]
ID3v1 genres.
Definition: id3v1.c:27
This structure stores compressed data.
Definition: avcodec.h:1040
static int mov_read_sbgp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:2011
static void mov_parse_stsd_subtitle(MOVContext *c, AVIOContext *pb, AVStream *st, MOVStreamContext *sc, int size)
Definition: mov.c:1463
int64_t pts
Presentation timestamp in AVStream-&gt;time_base units; the time at which the decompressed packet will b...
Definition: avcodec.h:1056
AVPacket attached_pic
For streams with AV_DISPOSITION_ATTACHED_PIC disposition, this packet will contain the attached pictu...
Definition: avformat.h:749
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avcodec.h:2278
Definition: isom.h:56
void * av_mallocz(size_t size) av_malloc_attrib 1(1)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...
Definition: mem.c:241
#define MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC
Definition: isom.h:196
#define av_bswap32
Definition: bswap.h:33
Only parse headers, do not repack.
Definition: avformat.h:600