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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 <inttypes.h>
27 #include <limits.h>
28 #include <stdint.h>
29 
30 #include "libavutil/attributes.h"
32 #include "libavutil/display.h"
33 #include "libavutil/intreadwrite.h"
34 #include "libavutil/intfloat.h"
35 #include "libavutil/mathematics.h"
37 #include "libavutil/avstring.h"
38 #include "libavutil/dict.h"
39 #include "libavutil/opt.h"
40 #include "libavutil/timecode.h"
41 #include "libavcodec/ac3tab.h"
42 #include "avformat.h"
43 #include "internal.h"
44 #include "avio_internal.h"
45 #include "riff.h"
46 #include "isom.h"
47 #include "libavcodec/get_bits.h"
48 #include "id3v1.h"
49 #include "mov_chan.h"
50 #include "replaygain.h"
51 
52 #if CONFIG_ZLIB
53 #include <zlib.h>
54 #endif
55 
56 #include "qtpalette.h"
57 
58 
59 #undef NDEBUG
60 #include <assert.h>
61 
62 /* those functions parse an atom */
63 /* links atom IDs to parse functions */
64 typedef struct MOVParseTableEntry {
65  uint32_t type;
66  int (*parse)(MOVContext *ctx, AVIOContext *pb, MOVAtom atom);
68 
69 static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom);
70 static int mov_read_mfra(MOVContext *c, AVIOContext *f);
71 
73  unsigned len, const char *key)
74 {
75  char buf[16];
76 
77  short current, total = 0;
78  avio_rb16(pb); // unknown
79  current = avio_rb16(pb);
80  if (len >= 6)
81  total = avio_rb16(pb);
82  if (!total)
83  snprintf(buf, sizeof(buf), "%d", current);
84  else
85  snprintf(buf, sizeof(buf), "%d/%d", current, total);
87  av_dict_set(&c->fc->metadata, key, buf, 0);
88 
89  return 0;
90 }
91 
93  unsigned len, const char *key)
94 {
95  /* bypass padding bytes */
96  avio_r8(pb);
97  avio_r8(pb);
98  avio_r8(pb);
99 
101  av_dict_set_int(&c->fc->metadata, key, avio_r8(pb), 0);
102 
103  return 0;
104 }
105 
107  unsigned len, const char *key)
108 {
110  av_dict_set_int(&c->fc->metadata, key, avio_r8(pb), 0);
111 
112  return 0;
113 }
114 
116  unsigned len, const char *key)
117 {
118  short genre;
119 
120  avio_r8(pb); // unknown
121 
122  genre = avio_r8(pb);
123  if (genre < 1 || genre > ID3v1_GENRE_MAX)
124  return 0;
126  av_dict_set(&c->fc->metadata, key, ff_id3v1_genre_str[genre-1], 0);
127 
128  return 0;
129 }
130 
131 static const uint32_t mac_to_unicode[128] = {
132  0x00C4,0x00C5,0x00C7,0x00C9,0x00D1,0x00D6,0x00DC,0x00E1,
133  0x00E0,0x00E2,0x00E4,0x00E3,0x00E5,0x00E7,0x00E9,0x00E8,
134  0x00EA,0x00EB,0x00ED,0x00EC,0x00EE,0x00EF,0x00F1,0x00F3,
135  0x00F2,0x00F4,0x00F6,0x00F5,0x00FA,0x00F9,0x00FB,0x00FC,
136  0x2020,0x00B0,0x00A2,0x00A3,0x00A7,0x2022,0x00B6,0x00DF,
137  0x00AE,0x00A9,0x2122,0x00B4,0x00A8,0x2260,0x00C6,0x00D8,
138  0x221E,0x00B1,0x2264,0x2265,0x00A5,0x00B5,0x2202,0x2211,
139  0x220F,0x03C0,0x222B,0x00AA,0x00BA,0x03A9,0x00E6,0x00F8,
140  0x00BF,0x00A1,0x00AC,0x221A,0x0192,0x2248,0x2206,0x00AB,
141  0x00BB,0x2026,0x00A0,0x00C0,0x00C3,0x00D5,0x0152,0x0153,
142  0x2013,0x2014,0x201C,0x201D,0x2018,0x2019,0x00F7,0x25CA,
143  0x00FF,0x0178,0x2044,0x20AC,0x2039,0x203A,0xFB01,0xFB02,
144  0x2021,0x00B7,0x201A,0x201E,0x2030,0x00C2,0x00CA,0x00C1,
145  0x00CB,0x00C8,0x00CD,0x00CE,0x00CF,0x00CC,0x00D3,0x00D4,
146  0xF8FF,0x00D2,0x00DA,0x00DB,0x00D9,0x0131,0x02C6,0x02DC,
147  0x00AF,0x02D8,0x02D9,0x02DA,0x00B8,0x02DD,0x02DB,0x02C7,
148 };
149 
151  char *dst, int dstlen)
152 {
153  char *p = dst;
154  char *end = dst+dstlen-1;
155  int i;
156 
157  for (i = 0; i < len; i++) {
158  uint8_t t, c = avio_r8(pb);
159  if (c < 0x80 && p < end)
160  *p++ = c;
161  else if (p < end)
162  PUT_UTF8(mac_to_unicode[c-0x80], t, if (p < end) *p++ = t;);
163  }
164  *p = 0;
165  return p - dst;
166 }
167 
168 static int mov_read_covr(MOVContext *c, AVIOContext *pb, int type, int len)
169 {
170  AVPacket pkt;
171  AVStream *st;
172  MOVStreamContext *sc;
173  enum AVCodecID id;
174  int ret;
175 
176  switch (type) {
177  case 0xd: id = AV_CODEC_ID_MJPEG; break;
178  case 0xe: id = AV_CODEC_ID_PNG; break;
179  case 0x1b: id = AV_CODEC_ID_BMP; break;
180  default:
181  av_log(c->fc, AV_LOG_WARNING, "Unknown cover type: 0x%x.\n", type);
182  avio_skip(pb, len);
183  return 0;
184  }
185 
186  st = avformat_new_stream(c->fc, NULL);
187  if (!st)
188  return AVERROR(ENOMEM);
189  sc = av_mallocz(sizeof(*sc));
190  if (!sc)
191  return AVERROR(ENOMEM);
192  st->priv_data = sc;
193 
194  ret = av_get_packet(pb, &pkt, len);
195  if (ret < 0)
196  return ret;
197 
199 
200  st->attached_pic = pkt;
201  st->attached_pic.stream_index = st->index;
203 
205  st->codec->codec_id = id;
206 
207  return 0;
208 }
209 
210 static int mov_metadata_loci(MOVContext *c, AVIOContext *pb, unsigned len)
211 {
212  char language[4] = { 0 };
213  char buf[100];
214  uint16_t langcode = 0;
215  double longitude, latitude;
216  const char *key = "location";
217 
218  if (len < 4 + 2 + 1 + 1 + 4 + 4 + 4)
219  return AVERROR_INVALIDDATA;
220 
221  avio_skip(pb, 4); // version+flags
222  langcode = avio_rb16(pb);
223  ff_mov_lang_to_iso639(langcode, language);
224  len -= 6;
225 
226  len -= avio_get_str(pb, len, buf, sizeof(buf)); // place name
227  if (len < 1)
228  return AVERROR_INVALIDDATA;
229  avio_skip(pb, 1); // role
230  len -= 1;
231 
232  if (len < 14)
233  return AVERROR_INVALIDDATA;
234  longitude = ((int32_t) avio_rb32(pb)) / (float) (1 << 16);
235  latitude = ((int32_t) avio_rb32(pb)) / (float) (1 << 16);
236 
237  // Try to output in the same format as the ?xyz field
238  snprintf(buf, sizeof(buf), "%+08.4f%+09.4f/", latitude, longitude);
239  if (*language && strcmp(language, "und")) {
240  char key2[16];
241  snprintf(key2, sizeof(key2), "%s-%s", key, language);
242  av_dict_set(&c->fc->metadata, key2, buf, 0);
243  }
245  return av_dict_set(&c->fc->metadata, key, buf, 0);
246 }
247 
249 {
250  char tmp_key[5];
251  char key2[32], language[4] = {0};
252  char *str = NULL;
253  const char *key = NULL;
254  uint16_t langcode = 0;
255  uint32_t data_type = 0, str_size, str_size_alloc;
256  int (*parse)(MOVContext*, AVIOContext*, unsigned, const char*) = NULL;
257  int raw = 0;
258 
259  switch (atom.type) {
260  case MKTAG( '@','P','R','M'): key = "premiere_version"; raw = 1; break;
261  case MKTAG( '@','P','R','Q'): key = "quicktime_version"; raw = 1; break;
262  case MKTAG( 'X','M','P','_'):
263  if (c->export_xmp) { key = "xmp"; raw = 1; } break;
264  case MKTAG( 'a','A','R','T'): key = "album_artist"; break;
265  case MKTAG( 'a','k','I','D'): key = "account_type";
267  case MKTAG( 'a','p','I','D'): key = "account_id"; break;
268  case MKTAG( 'c','a','t','g'): key = "category"; break;
269  case MKTAG( 'c','p','i','l'): key = "compilation";
271  case MKTAG( 'c','p','r','t'): key = "copyright"; break;
272  case MKTAG( 'd','e','s','c'): key = "description"; break;
273  case MKTAG( 'd','i','s','k'): key = "disc";
275  case MKTAG( 'e','g','i','d'): key = "episode_uid";
277  case MKTAG( 'g','n','r','e'): key = "genre";
278  parse = mov_metadata_gnre; break;
279  case MKTAG( 'h','d','v','d'): key = "hd_video";
281  case MKTAG( 'k','e','y','w'): key = "keywords"; break;
282  case MKTAG( 'l','d','e','s'): key = "synopsis"; break;
283  case MKTAG( 'l','o','c','i'):
284  return mov_metadata_loci(c, pb, atom.size);
285  case MKTAG( 'p','c','s','t'): key = "podcast";
287  case MKTAG( 'p','g','a','p'): key = "gapless_playback";
289  case MKTAG( 'p','u','r','d'): key = "purchase_date"; break;
290  case MKTAG( 'r','t','n','g'): key = "rating";
292  case MKTAG( 's','o','a','a'): key = "sort_album_artist"; break;
293  case MKTAG( 's','o','a','l'): key = "sort_album"; break;
294  case MKTAG( 's','o','a','r'): key = "sort_artist"; break;
295  case MKTAG( 's','o','c','o'): key = "sort_composer"; break;
296  case MKTAG( 's','o','n','m'): key = "sort_name"; break;
297  case MKTAG( 's','o','s','n'): key = "sort_show"; break;
298  case MKTAG( 's','t','i','k'): key = "media_type";
300  case MKTAG( 't','r','k','n'): key = "track";
302  case MKTAG( 't','v','e','n'): key = "episode_id"; break;
303  case MKTAG( 't','v','e','s'): key = "episode_sort";
305  case MKTAG( 't','v','n','n'): key = "network"; break;
306  case MKTAG( 't','v','s','h'): key = "show"; break;
307  case MKTAG( 't','v','s','n'): key = "season_number";
309  case MKTAG(0xa9,'A','R','T'): key = "artist"; break;
310  case MKTAG(0xa9,'P','R','D'): key = "producer"; break;
311  case MKTAG(0xa9,'a','l','b'): key = "album"; break;
312  case MKTAG(0xa9,'a','u','t'): key = "artist"; break;
313  case MKTAG(0xa9,'c','h','p'): key = "chapter"; break;
314  case MKTAG(0xa9,'c','m','t'): key = "comment"; break;
315  case MKTAG(0xa9,'c','o','m'): key = "composer"; break;
316  case MKTAG(0xa9,'c','p','y'): key = "copyright"; break;
317  case MKTAG(0xa9,'d','a','y'): key = "date"; break;
318  case MKTAG(0xa9,'d','i','r'): key = "director"; break;
319  case MKTAG(0xa9,'d','i','s'): key = "disclaimer"; break;
320  case MKTAG(0xa9,'e','d','1'): key = "edit_date"; break;
321  case MKTAG(0xa9,'e','n','c'): key = "encoder"; break;
322  case MKTAG(0xa9,'f','m','t'): key = "original_format"; break;
323  case MKTAG(0xa9,'g','e','n'): key = "genre"; break;
324  case MKTAG(0xa9,'g','r','p'): key = "grouping"; break;
325  case MKTAG(0xa9,'h','s','t'): key = "host_computer"; break;
326  case MKTAG(0xa9,'i','n','f'): key = "comment"; break;
327  case MKTAG(0xa9,'l','y','r'): key = "lyrics"; break;
328  case MKTAG(0xa9,'m','a','k'): key = "make"; break;
329  case MKTAG(0xa9,'m','o','d'): key = "model"; break;
330  case MKTAG(0xa9,'n','a','m'): key = "title"; break;
331  case MKTAG(0xa9,'o','p','e'): key = "original_artist"; break;
332  case MKTAG(0xa9,'p','r','d'): key = "producer"; break;
333  case MKTAG(0xa9,'p','r','f'): key = "performers"; break;
334  case MKTAG(0xa9,'r','e','q'): key = "playback_requirements"; break;
335  case MKTAG(0xa9,'s','r','c'): key = "original_source"; break;
336  case MKTAG(0xa9,'s','t','3'): key = "subtitle"; break;
337  case MKTAG(0xa9,'s','w','r'): key = "encoder"; break;
338  case MKTAG(0xa9,'t','o','o'): key = "encoder"; break;
339  case MKTAG(0xa9,'t','r','k'): key = "track"; break;
340  case MKTAG(0xa9,'u','r','l'): key = "URL"; break;
341  case MKTAG(0xa9,'w','r','n'): key = "warning"; break;
342  case MKTAG(0xa9,'w','r','t'): key = "composer"; break;
343  case MKTAG(0xa9,'x','y','z'): key = "location"; break;
344  }
345 
346  if (c->itunes_metadata && atom.size > 8) {
347  int data_size = avio_rb32(pb);
348  int tag = avio_rl32(pb);
349  if (tag == MKTAG('d','a','t','a')) {
350  data_type = avio_rb32(pb); // type
351  avio_rb32(pb); // unknown
352  str_size = data_size - 16;
353  atom.size -= 16;
354 
355  if (atom.type == MKTAG('c', 'o', 'v', 'r')) {
356  int ret = mov_read_covr(c, pb, data_type, str_size);
357  if (ret < 0) {
358  av_log(c->fc, AV_LOG_ERROR, "Error parsing cover art.\n");
359  }
360  return ret;
361  }
362  } else return 0;
363  } else if (atom.size > 4 && key && !c->itunes_metadata && !raw) {
364  str_size = avio_rb16(pb); // string length
365  langcode = avio_rb16(pb);
366  ff_mov_lang_to_iso639(langcode, language);
367  atom.size -= 4;
368  } else
369  str_size = atom.size;
370 
371  if (c->export_all && !key) {
372  snprintf(tmp_key, 5, "%.4s", (char*)&atom.type);
373  key = tmp_key;
374  }
375 
376  if (!key)
377  return 0;
378  if (atom.size < 0)
379  return AVERROR_INVALIDDATA;
380 
381  // worst-case requirement for output string in case of utf8 coded input
382  str_size_alloc = (raw ? str_size : str_size * 2) + 1;
383  str = av_malloc(str_size_alloc);
384  if (!str)
385  return AVERROR(ENOMEM);
386 
387  if (parse)
388  parse(c, pb, str_size, key);
389  else {
390  if (!raw && (data_type == 3 || (data_type == 0 && (langcode < 0x400 || langcode == 0x7fff)))) { // MAC Encoded
391  mov_read_mac_string(c, pb, str_size, str, str_size_alloc);
392  } else {
393  int ret = avio_read(pb, str, str_size);
394  if (ret != str_size) {
395  av_freep(&str);
396  return ret < 0 ? ret : AVERROR_INVALIDDATA;
397  }
398  str[str_size] = 0;
399  }
401  av_dict_set(&c->fc->metadata, key, str, 0);
402  if (*language && strcmp(language, "und")) {
403  snprintf(key2, sizeof(key2), "%s-%s", key, language);
404  av_dict_set(&c->fc->metadata, key2, str, 0);
405  }
406  }
407  av_dlog(c->fc, "lang \"%3s\" ", language);
408  av_dlog(c->fc, "tag \"%s\" value \"%s\" atom \"%.4s\" %d %"PRId64"\n",
409  key, str, (char*)&atom.type, str_size_alloc, atom.size);
410 
411  av_freep(&str);
412  return 0;
413 }
414 
416 {
417  int64_t start;
418  int i, nb_chapters, str_len, version;
419  char str[256+1];
420 
421  if ((atom.size -= 5) < 0)
422  return 0;
423 
424  version = avio_r8(pb);
425  avio_rb24(pb);
426  if (version)
427  avio_rb32(pb); // ???
428  nb_chapters = avio_r8(pb);
429 
430  for (i = 0; i < nb_chapters; i++) {
431  if (atom.size < 9)
432  return 0;
433 
434  start = avio_rb64(pb);
435  str_len = avio_r8(pb);
436 
437  if ((atom.size -= 9+str_len) < 0)
438  return 0;
439 
440  avio_read(pb, str, str_len);
441  str[str_len] = 0;
442  avpriv_new_chapter(c->fc, i, (AVRational){1,10000000}, start, AV_NOPTS_VALUE, str);
443  }
444  return 0;
445 }
446 
447 #define MIN_DATA_ENTRY_BOX_SIZE 12
449 {
450  AVStream *st;
451  MOVStreamContext *sc;
452  int entries, i, j;
453 
454  if (c->fc->nb_streams < 1)
455  return 0;
456  st = c->fc->streams[c->fc->nb_streams-1];
457  sc = st->priv_data;
458 
459  avio_rb32(pb); // version + flags
460  entries = avio_rb32(pb);
461  if (entries > (atom.size - 1) / MIN_DATA_ENTRY_BOX_SIZE + 1 ||
462  entries >= UINT_MAX / sizeof(*sc->drefs))
463  return AVERROR_INVALIDDATA;
464  av_free(sc->drefs);
465  sc->drefs_count = 0;
466  sc->drefs = av_mallocz(entries * sizeof(*sc->drefs));
467  if (!sc->drefs)
468  return AVERROR(ENOMEM);
469  sc->drefs_count = entries;
470 
471  for (i = 0; i < sc->drefs_count; i++) {
472  MOVDref *dref = &sc->drefs[i];
473  uint32_t size = avio_rb32(pb);
474  int64_t next = avio_tell(pb) + size - 4;
475 
476  if (size < 12)
477  return AVERROR_INVALIDDATA;
478 
479  dref->type = avio_rl32(pb);
480  avio_rb32(pb); // version + flags
481  av_dlog(c->fc, "type %.4s size %d\n", (char*)&dref->type, size);
482 
483  if (dref->type == MKTAG('a','l','i','s') && size > 150) {
484  /* macintosh alias record */
485  uint16_t volume_len, len;
486  int16_t type;
487 
488  avio_skip(pb, 10);
489 
490  volume_len = avio_r8(pb);
491  volume_len = FFMIN(volume_len, 27);
492  avio_read(pb, dref->volume, 27);
493  dref->volume[volume_len] = 0;
494  av_log(c->fc, AV_LOG_DEBUG, "volume %s, len %d\n", dref->volume, volume_len);
495 
496  avio_skip(pb, 12);
497 
498  len = avio_r8(pb);
499  len = FFMIN(len, 63);
500  avio_read(pb, dref->filename, 63);
501  dref->filename[len] = 0;
502  av_log(c->fc, AV_LOG_DEBUG, "filename %s, len %d\n", dref->filename, len);
503 
504  avio_skip(pb, 16);
505 
506  /* read next level up_from_alias/down_to_target */
507  dref->nlvl_from = avio_rb16(pb);
508  dref->nlvl_to = avio_rb16(pb);
509  av_log(c->fc, AV_LOG_DEBUG, "nlvl from %d, nlvl to %d\n",
510  dref->nlvl_from, dref->nlvl_to);
511 
512  avio_skip(pb, 16);
513 
514  for (type = 0; type != -1 && avio_tell(pb) < next; ) {
515  if(avio_feof(pb))
516  return AVERROR_EOF;
517  type = avio_rb16(pb);
518  len = avio_rb16(pb);
519  av_log(c->fc, AV_LOG_DEBUG, "type %d, len %d\n", type, len);
520  if (len&1)
521  len += 1;
522  if (type == 2) { // absolute path
523  av_free(dref->path);
524  dref->path = av_mallocz(len+1);
525  if (!dref->path)
526  return AVERROR(ENOMEM);
527  avio_read(pb, dref->path, len);
528  if (len > volume_len && !strncmp(dref->path, dref->volume, volume_len)) {
529  len -= volume_len;
530  memmove(dref->path, dref->path+volume_len, len);
531  dref->path[len] = 0;
532  }
533  for (j = 0; j < len; j++)
534  if (dref->path[j] == ':')
535  dref->path[j] = '/';
536  av_log(c->fc, AV_LOG_DEBUG, "path %s\n", dref->path);
537  } else if (type == 0) { // directory name
538  av_free(dref->dir);
539  dref->dir = av_malloc(len+1);
540  if (!dref->dir)
541  return AVERROR(ENOMEM);
542  if (avio_read(pb, dref->dir, len) != len)
543  return AVERROR_INVALIDDATA;
544  dref->dir[len] = 0;
545  for (j = 0; j < len; j++)
546  if (dref->dir[j] == ':')
547  dref->dir[j] = '/';
548  av_log(c->fc, AV_LOG_DEBUG, "dir %s\n", dref->dir);
549  } else
550  avio_skip(pb, len);
551  }
552  }
553  avio_seek(pb, next, SEEK_SET);
554  }
555  return 0;
556 }
557 
559 {
560  AVStream *st;
561  uint32_t type;
562  uint32_t av_unused ctype;
563  int title_size;
564  char *title_str;
565 
566  if (c->fc->nb_streams < 1) // meta before first trak
567  return 0;
568 
569  st = c->fc->streams[c->fc->nb_streams-1];
570 
571  avio_r8(pb); /* version */
572  avio_rb24(pb); /* flags */
573 
574  /* component type */
575  ctype = avio_rl32(pb);
576  type = avio_rl32(pb); /* component subtype */
577 
578  av_dlog(c->fc, "ctype= %.4s (0x%08x)\n", (char*)&ctype, ctype);
579  av_dlog(c->fc, "stype= %.4s\n", (char*)&type);
580 
581  if (type == MKTAG('v','i','d','e'))
583  else if (type == MKTAG('s','o','u','n'))
585  else if (type == MKTAG('m','1','a',' '))
587  else if ((type == MKTAG('s','u','b','p')) || (type == MKTAG('c','l','c','p')))
589 
590  avio_rb32(pb); /* component manufacture */
591  avio_rb32(pb); /* component flags */
592  avio_rb32(pb); /* component flags mask */
593 
594  title_size = atom.size - 24;
595  if (title_size > 0) {
596  title_str = av_malloc(title_size + 1); /* Add null terminator */
597  if (!title_str)
598  return AVERROR(ENOMEM);
599  avio_read(pb, title_str, title_size);
600  title_str[title_size] = 0;
601  if (title_str[0])
602  av_dict_set(&st->metadata, "handler_name", title_str +
603  (!c->isom && title_str[0] == title_size - 1), 0);
604  av_freep(&title_str);
605  }
606 
607  return 0;
608 }
609 
611 {
612  AVStream *st;
613  int tag;
614 
615  if (fc->nb_streams < 1)
616  return 0;
617  st = fc->streams[fc->nb_streams-1];
618 
619  avio_rb32(pb); /* version + flags */
620  ff_mp4_read_descr(fc, pb, &tag);
621  if (tag == MP4ESDescrTag) {
622  ff_mp4_parse_es_descr(pb, NULL);
623  } else
624  avio_rb16(pb); /* ID */
625 
626  ff_mp4_read_descr(fc, pb, &tag);
627  if (tag == MP4DecConfigDescrTag)
628  ff_mp4_read_dec_config_descr(fc, st, pb);
629  return 0;
630 }
631 
633 {
634  return ff_mov_read_esds(c->fc, pb);
635 }
636 
638 {
639  AVStream *st;
640  int ac3info, acmod, lfeon, bsmod;
641 
642  if (c->fc->nb_streams < 1)
643  return 0;
644  st = c->fc->streams[c->fc->nb_streams-1];
645 
646  ac3info = avio_rb24(pb);
647  bsmod = (ac3info >> 14) & 0x7;
648  acmod = (ac3info >> 11) & 0x7;
649  lfeon = (ac3info >> 10) & 0x1;
650  st->codec->channels = ((int[]){2,1,2,3,3,4,4,5})[acmod] + lfeon;
652  if (lfeon)
654  st->codec->audio_service_type = bsmod;
655  if (st->codec->channels > 1 && bsmod == 0x7)
657 
658  return 0;
659 }
660 
662 {
663  AVStream *st;
664  int eac3info, acmod, lfeon, bsmod;
665 
666  if (c->fc->nb_streams < 1)
667  return 0;
668  st = c->fc->streams[c->fc->nb_streams-1];
669 
670  /* No need to parse fields for additional independent substreams and its
671  * associated dependent substreams since libavcodec's E-AC-3 decoder
672  * does not support them yet. */
673  avio_rb16(pb); /* data_rate and num_ind_sub */
674  eac3info = avio_rb24(pb);
675  bsmod = (eac3info >> 12) & 0x1f;
676  acmod = (eac3info >> 9) & 0x7;
677  lfeon = (eac3info >> 8) & 0x1;
679  if (lfeon)
682  st->codec->audio_service_type = bsmod;
683  if (st->codec->channels > 1 && bsmod == 0x7)
685 
686  return 0;
687 }
688 
690 {
691  AVStream *st;
692 
693  if (c->fc->nb_streams < 1)
694  return 0;
695  st = c->fc->streams[c->fc->nb_streams-1];
696 
697  if (atom.size < 16)
698  return 0;
699 
700  /* skip version and flags */
701  avio_skip(pb, 4);
702 
703  ff_mov_read_chan(c->fc, pb, st, atom.size - 4);
704 
705  return 0;
706 }
707 
709 {
710  AVStream *st;
711  int ret;
712 
713  if (c->fc->nb_streams < 1)
714  return 0;
715  st = c->fc->streams[c->fc->nb_streams-1];
716 
717  if ((ret = ff_get_wav_header(pb, st->codec, atom.size, 0)) < 0)
718  av_log(c->fc, AV_LOG_WARNING, "get_wav_header failed\n");
719 
720  return ret;
721 }
722 
724 {
725  const int num = avio_rb32(pb);
726  const int den = avio_rb32(pb);
727  AVStream *st;
728 
729  if (c->fc->nb_streams < 1)
730  return 0;
731  st = c->fc->streams[c->fc->nb_streams-1];
732 
733  if ((st->sample_aspect_ratio.den != 1 || st->sample_aspect_ratio.num) && // default
734  (den != st->sample_aspect_ratio.den || num != st->sample_aspect_ratio.num)) {
736  "sample aspect ratio already set to %d:%d, ignoring 'pasp' atom (%d:%d)\n",
738  num, den);
739  } else if (den != 0) {
740  st->sample_aspect_ratio.num = num;
741  st->sample_aspect_ratio.den = den;
742  }
743  return 0;
744 }
745 
746 /* this atom contains actual media data */
748 {
749  if (atom.size == 0) /* wrong one (MP4) */
750  return 0;
751  c->found_mdat=1;
752  return 0; /* now go for moov */
753 }
754 
755 /* read major brand, minor version and compatible brands and store them as metadata */
757 {
758  uint32_t minor_ver;
759  int comp_brand_size;
760  char* comp_brands_str;
761  uint8_t type[5] = {0};
762 
763  avio_read(pb, type, 4);
764  if (strcmp(type, "qt "))
765  c->isom = 1;
766  av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
767  av_dict_set(&c->fc->metadata, "major_brand", type, 0);
768  minor_ver = avio_rb32(pb); /* minor version */
769  av_dict_set_int(&c->fc->metadata, "minor_version", minor_ver, 0);
770 
771  comp_brand_size = atom.size - 8;
772  if (comp_brand_size < 0)
773  return AVERROR_INVALIDDATA;
774  comp_brands_str = av_malloc(comp_brand_size + 1); /* Add null terminator */
775  if (!comp_brands_str)
776  return AVERROR(ENOMEM);
777  avio_read(pb, comp_brands_str, comp_brand_size);
778  comp_brands_str[comp_brand_size] = 0;
779  av_dict_set(&c->fc->metadata, "compatible_brands", comp_brands_str, 0);
780  av_freep(&comp_brands_str);
781 
782  return 0;
783 }
784 
785 /* this atom should contain all header atoms */
787 {
788  int ret;
789 
790  if (c->found_moov) {
791  av_log(c->fc, AV_LOG_WARNING, "Found duplicated MOOV Atom. Skipped it\n");
792  avio_skip(pb, atom.size);
793  return 0;
794  }
795 
796  if ((ret = mov_read_default(c, pb, atom)) < 0)
797  return ret;
798  /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
799  /* so we don't parse the whole file if over a network */
800  c->found_moov=1;
801  return 0; /* now go for mdat */
802 }
803 
805 {
806  if (!c->has_looked_for_mfra && c->use_mfra_for > 0) {
807  c->has_looked_for_mfra = 1;
808  if (pb->seekable) {
809  int ret;
810  av_log(c->fc, AV_LOG_VERBOSE, "stream has moof boxes, will look "
811  "for a mfra\n");
812  if ((ret = mov_read_mfra(c, pb)) < 0) {
813  av_log(c->fc, AV_LOG_VERBOSE, "found a moof box but failed to "
814  "read the mfra (may be a live ismv)\n");
815  }
816  } else {
817  av_log(c->fc, AV_LOG_VERBOSE, "found a moof box but stream is not "
818  "seekable, can not look for mfra\n");
819  }
820  }
822  av_dlog(c->fc, "moof offset %"PRIx64"\n", c->fragment.moof_offset);
823  return mov_read_default(c, pb, atom);
824 }
825 
826 static void mov_metadata_creation_time(AVDictionary **metadata, int64_t time)
827 {
828  char buffer[32];
829  if (time) {
830  struct tm *ptm, tmbuf;
831  time_t timet;
832  if(time >= 2082844800)
833  time -= 2082844800; /* seconds between 1904-01-01 and Epoch */
834  timet = time;
835  ptm = gmtime_r(&timet, &tmbuf);
836  if (!ptm) return;
837  if (strftime(buffer, sizeof(buffer), "%Y-%m-%d %H:%M:%S", ptm))
838  av_dict_set(metadata, "creation_time", buffer, 0);
839  }
840 }
841 
843 {
844  AVStream *st;
845  MOVStreamContext *sc;
846  int version;
847  char language[4] = {0};
848  unsigned lang;
849  int64_t creation_time;
850 
851  if (c->fc->nb_streams < 1)
852  return 0;
853  st = c->fc->streams[c->fc->nb_streams-1];
854  sc = st->priv_data;
855 
856  if (sc->time_scale) {
857  av_log(c->fc, AV_LOG_ERROR, "Multiple mdhd?\n");
858  return AVERROR_INVALIDDATA;
859  }
860 
861  version = avio_r8(pb);
862  if (version > 1) {
863  avpriv_request_sample(c->fc, "Version %d", version);
864  return AVERROR_PATCHWELCOME;
865  }
866  avio_rb24(pb); /* flags */
867  if (version == 1) {
868  creation_time = avio_rb64(pb);
869  avio_rb64(pb);
870  } else {
871  creation_time = avio_rb32(pb);
872  avio_rb32(pb); /* modification time */
873  }
874  mov_metadata_creation_time(&st->metadata, creation_time);
875 
876  sc->time_scale = avio_rb32(pb);
877  st->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
878 
879  lang = avio_rb16(pb); /* language */
880  if (ff_mov_lang_to_iso639(lang, language))
881  av_dict_set(&st->metadata, "language", language, 0);
882  avio_rb16(pb); /* quality */
883 
884  return 0;
885 }
886 
888 {
889  int64_t creation_time;
890  int version = avio_r8(pb); /* version */
891  avio_rb24(pb); /* flags */
892 
893  if (version == 1) {
894  creation_time = avio_rb64(pb);
895  avio_rb64(pb);
896  } else {
897  creation_time = avio_rb32(pb);
898  avio_rb32(pb); /* modification time */
899  }
900  mov_metadata_creation_time(&c->fc->metadata, creation_time);
901  c->time_scale = avio_rb32(pb); /* time scale */
902 
903  av_dlog(c->fc, "time scale = %i\n", c->time_scale);
904 
905  c->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
906  // set the AVCodecContext duration because the duration of individual tracks
907  // may be inaccurate
908  if (c->time_scale > 0 && !c->trex_data)
910  avio_rb32(pb); /* preferred scale */
911 
912  avio_rb16(pb); /* preferred volume */
913 
914  avio_skip(pb, 10); /* reserved */
915 
916  avio_skip(pb, 36); /* display matrix */
917 
918  avio_rb32(pb); /* preview time */
919  avio_rb32(pb); /* preview duration */
920  avio_rb32(pb); /* poster time */
921  avio_rb32(pb); /* selection time */
922  avio_rb32(pb); /* selection duration */
923  avio_rb32(pb); /* current time */
924  avio_rb32(pb); /* next track ID */
925  return 0;
926 }
927 
929 {
930  AVStream *st;
931  int little_endian;
932 
933  if (c->fc->nb_streams < 1)
934  return 0;
935  st = c->fc->streams[c->fc->nb_streams-1];
936 
937  little_endian = avio_rb16(pb) & 0xFF;
938  av_dlog(c->fc, "enda %d\n", little_endian);
939  if (little_endian == 1) {
940  switch (st->codec->codec_id) {
943  break;
946  break;
949  break;
952  break;
953  default:
954  break;
955  }
956  }
957  return 0;
958 }
959 
961 {
962  AVStream *st;
963  char color_parameter_type[5] = { 0 };
964  int color_primaries, color_trc, color_matrix;
965 
966  if (c->fc->nb_streams < 1)
967  return 0;
968  st = c->fc->streams[c->fc->nb_streams - 1];
969 
970  avio_read(pb, color_parameter_type, 4);
971  if (strncmp(color_parameter_type, "nclx", 4) &&
972  strncmp(color_parameter_type, "nclc", 4)) {
973  av_log(c->fc, AV_LOG_WARNING, "unsupported color_parameter_type %s\n",
974  color_parameter_type);
975  return 0;
976  }
977 
978  color_primaries = avio_rb16(pb);
979  color_trc = avio_rb16(pb);
980  color_matrix = avio_rb16(pb);
981 
982  av_dlog(c->fc, "%s: pri %d trc %d matrix %d",
983  color_parameter_type, color_primaries, color_trc, color_matrix);
984 
985  if (c->isom) {
986  uint8_t color_range = avio_r8(pb) >> 7;
987  av_dlog(c->fc, " full %"PRIu8"", color_range);
988  if (color_range)
990  else
992  /* 14496-12 references JPEG XR specs (rather than the more complete
993  * 23001-8) so some adjusting is required */
994  if (color_primaries >= AVCOL_PRI_FILM)
995  color_primaries = AVCOL_PRI_UNSPECIFIED;
996  if ((color_trc >= AVCOL_TRC_LINEAR &&
997  color_trc <= AVCOL_TRC_LOG_SQRT) ||
998  color_trc >= AVCOL_TRC_BT2020_10)
999  color_trc = AVCOL_TRC_UNSPECIFIED;
1000  if (color_matrix >= AVCOL_SPC_BT2020_NCL)
1001  color_matrix = AVCOL_SPC_UNSPECIFIED;
1003  st->codec->color_trc = color_trc;
1004  st->codec->colorspace = color_matrix;
1005  } else {
1006  /* color primaries, Table 4-4 */
1007  switch (color_primaries) {
1008  case 1: st->codec->color_primaries = AVCOL_PRI_BT709; break;
1009  case 5: st->codec->color_primaries = AVCOL_PRI_SMPTE170M; break;
1010  case 6: st->codec->color_primaries = AVCOL_PRI_SMPTE240M; break;
1011  }
1012  /* color transfer, Table 4-5 */
1013  switch (color_trc) {
1014  case 1: st->codec->color_trc = AVCOL_TRC_BT709; break;
1015  case 7: st->codec->color_trc = AVCOL_TRC_SMPTE240M; break;
1016  }
1017  /* color matrix, Table 4-6 */
1018  switch (color_matrix) {
1019  case 1: st->codec->colorspace = AVCOL_SPC_BT709; break;
1020  case 6: st->codec->colorspace = AVCOL_SPC_BT470BG; break;
1021  case 7: st->codec->colorspace = AVCOL_SPC_SMPTE240M; break;
1022  }
1023  }
1024  av_dlog(c->fc, "\n");
1025 
1026  return 0;
1027 }
1028 
1030 {
1031  AVStream *st;
1032  unsigned mov_field_order;
1033  enum AVFieldOrder decoded_field_order = AV_FIELD_UNKNOWN;
1034 
1035  if (c->fc->nb_streams < 1) // will happen with jp2 files
1036  return 0;
1037  st = c->fc->streams[c->fc->nb_streams-1];
1038  if (atom.size < 2)
1039  return AVERROR_INVALIDDATA;
1040  mov_field_order = avio_rb16(pb);
1041  if ((mov_field_order & 0xFF00) == 0x0100)
1042  decoded_field_order = AV_FIELD_PROGRESSIVE;
1043  else if ((mov_field_order & 0xFF00) == 0x0200) {
1044  switch (mov_field_order & 0xFF) {
1045  case 0x01: decoded_field_order = AV_FIELD_TT;
1046  break;
1047  case 0x06: decoded_field_order = AV_FIELD_BB;
1048  break;
1049  case 0x09: decoded_field_order = AV_FIELD_TB;
1050  break;
1051  case 0x0E: decoded_field_order = AV_FIELD_BT;
1052  break;
1053  }
1054  }
1055  if (decoded_field_order == AV_FIELD_UNKNOWN && mov_field_order) {
1056  av_log(NULL, AV_LOG_ERROR, "Unknown MOV field order 0x%04x\n", mov_field_order);
1057  }
1058  st->codec->field_order = decoded_field_order;
1059 
1060  return 0;
1061 }
1062 
1063 /* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
1065  enum AVCodecID codec_id)
1066 {
1067  AVStream *st;
1068  uint64_t size;
1069  uint8_t *buf;
1070  int err;
1071 
1072  if (c->fc->nb_streams < 1) // will happen with jp2 files
1073  return 0;
1074  st= c->fc->streams[c->fc->nb_streams-1];
1075 
1076  if (st->codec->codec_id != codec_id)
1077  return 0; /* unexpected codec_id - don't mess with extradata */
1078 
1079  size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
1080  if (size > INT_MAX || (uint64_t)atom.size > INT_MAX)
1081  return AVERROR_INVALIDDATA;
1082  if ((err = av_reallocp(&st->codec->extradata, size)) < 0) {
1083  st->codec->extradata_size = 0;
1084  return err;
1085  }
1086  buf = st->codec->extradata + st->codec->extradata_size;
1088  AV_WB32( buf , atom.size + 8);
1089  AV_WL32( buf + 4, atom.type);
1090  err = avio_read(pb, buf + 8, atom.size);
1091  if (err < 0) {
1092  return err;
1093  } else if (err < atom.size) {
1094  av_log(c->fc, AV_LOG_WARNING, "truncated extradata\n");
1095  st->codec->extradata_size -= atom.size - err;
1096  }
1097  memset(buf + 8 + err, 0, FF_INPUT_BUFFER_PADDING_SIZE);
1098  return 0;
1099 }
1100 
1101 /* wrapper functions for reading ALAC/AVS/MJPEG/MJPEG2000 extradata atoms only for those codecs */
1103 {
1104  return mov_read_extradata(c, pb, atom, AV_CODEC_ID_ALAC);
1105 }
1106 
1108 {
1109  return mov_read_extradata(c, pb, atom, AV_CODEC_ID_AVS);
1110 }
1111 
1113 {
1114  return mov_read_extradata(c, pb, atom, AV_CODEC_ID_JPEG2000);
1115 }
1116 
1118 {
1119  int ret = mov_read_extradata(c, pb, atom, AV_CODEC_ID_AVUI);
1120  if(ret == 0)
1121  ret = mov_read_extradata(c, pb, atom, AV_CODEC_ID_DNXHD);
1122  return ret;
1123 }
1124 
1126 {
1127  int ret = mov_read_extradata(c, pb, atom, AV_CODEC_ID_TARGA_Y216);
1128 
1129  if (!ret && c->fc->nb_streams >= 1) {
1130  AVCodecContext *avctx = c->fc->streams[c->fc->nb_streams-1]->codec;
1131  if (avctx->extradata_size >= 40) {
1132  avctx->height = AV_RB16(&avctx->extradata[36]);
1133  avctx->width = AV_RB16(&avctx->extradata[38]);
1134  }
1135  }
1136  return ret;
1137 }
1138 
1140 {
1141  if (c->fc->nb_streams >= 1) {
1142  AVCodecContext *codec = c->fc->streams[c->fc->nb_streams-1]->codec;
1143  if (codec->codec_tag == MKTAG('A', 'V', 'i', 'n') &&
1144  codec->codec_id == AV_CODEC_ID_H264 &&
1145  atom.size > 11) {
1146  avio_skip(pb, 10);
1147  /* For AVID AVCI50, force width of 1440 to be able to select the correct SPS and PPS */
1148  if (avio_rb16(pb) == 0xd4d)
1149  codec->width = 1440;
1150  return 0;
1151  }
1152  }
1153 
1154  return mov_read_avid(c, pb, atom);
1155 }
1156 
1158 {
1159  return mov_read_extradata(c, pb, atom, AV_CODEC_ID_SVQ3);
1160 }
1161 
1163 {
1164  AVStream *st;
1165 
1166  if (c->fc->nb_streams < 1)
1167  return 0;
1168  st = c->fc->streams[c->fc->nb_streams-1];
1169 
1170  if ((uint64_t)atom.size > (1<<30))
1171  return AVERROR_INVALIDDATA;
1172 
1173  if (st->codec->codec_id == AV_CODEC_ID_QDM2 ||
1174  st->codec->codec_id == AV_CODEC_ID_QDMC ||
1175  st->codec->codec_id == AV_CODEC_ID_SPEEX) {
1176  // pass all frma atom to codec, needed at least for QDMC and QDM2
1177  av_free(st->codec->extradata);
1178  if (ff_get_extradata(st->codec, pb, atom.size) < 0)
1179  return AVERROR(ENOMEM);
1180  } else if (atom.size > 8) { /* to read frma, esds atoms */
1181  int ret;
1182  if ((ret = mov_read_default(c, pb, atom)) < 0)
1183  return ret;
1184  } else
1185  avio_skip(pb, atom.size);
1186  return 0;
1187 }
1188 
1189 /**
1190  * This function reads atom content and puts data in extradata without tag
1191  * nor size unlike mov_read_extradata.
1192  */
1194 {
1195  AVStream *st;
1196 
1197  if (c->fc->nb_streams < 1)
1198  return 0;
1199  st = c->fc->streams[c->fc->nb_streams-1];
1200 
1201  if ((uint64_t)atom.size > (1<<30))
1202  return AVERROR_INVALIDDATA;
1203 
1204  if (atom.size >= 10) {
1205  // Broken files created by legacy versions of libavformat will
1206  // wrap a whole fiel atom inside of a glbl atom.
1207  unsigned size = avio_rb32(pb);
1208  unsigned type = avio_rl32(pb);
1209  avio_seek(pb, -8, SEEK_CUR);
1210  if (type == MKTAG('f','i','e','l') && size == atom.size)
1211  return mov_read_default(c, pb, atom);
1212  }
1213  if (st->codec->extradata_size > 1 && st->codec->extradata) {
1214  av_log(c, AV_LOG_WARNING, "ignoring multiple glbl\n");
1215  return 0;
1216  }
1217  av_free(st->codec->extradata);
1218  if (ff_get_extradata(st->codec, pb, atom.size) < 0)
1219  return AVERROR(ENOMEM);
1220 
1221  return 0;
1222 }
1223 
1225 {
1226  AVStream *st;
1227  uint8_t profile_level;
1228  int ret;
1229 
1230  if (c->fc->nb_streams < 1)
1231  return 0;
1232  st = c->fc->streams[c->fc->nb_streams-1];
1233 
1234  if (atom.size >= (1<<28) || atom.size < 7)
1235  return AVERROR_INVALIDDATA;
1236 
1237  profile_level = avio_r8(pb);
1238  if ((profile_level & 0xf0) != 0xc0)
1239  return 0;
1240 
1241  avio_seek(pb, 6, SEEK_CUR);
1242  av_free(st->codec->extradata);
1243  if ((ret = ff_get_extradata(st->codec, pb, atom.size - 7)) < 0)
1244  return ret;
1245 
1246  return 0;
1247 }
1248 
1249 /**
1250  * An strf atom is a BITMAPINFOHEADER struct. This struct is 40 bytes itself,
1251  * but can have extradata appended at the end after the 40 bytes belonging
1252  * to the struct.
1253  */
1255 {
1256  AVStream *st;
1257 
1258  if (c->fc->nb_streams < 1)
1259  return 0;
1260  if (atom.size <= 40)
1261  return 0;
1262  st = c->fc->streams[c->fc->nb_streams-1];
1263 
1264  if ((uint64_t)atom.size > (1<<30))
1265  return AVERROR_INVALIDDATA;
1266 
1267  avio_skip(pb, 40);
1268  av_free(st->codec->extradata);
1269  if (ff_get_extradata(st->codec, pb, atom.size - 40) < 0)
1270  return AVERROR(ENOMEM);
1271  return 0;
1272 }
1273 
1275 {
1276  AVStream *st;
1277  MOVStreamContext *sc;
1278  unsigned int i, entries;
1279 
1280  if (c->fc->nb_streams < 1)
1281  return 0;
1282  st = c->fc->streams[c->fc->nb_streams-1];
1283  sc = st->priv_data;
1284 
1285  avio_r8(pb); /* version */
1286  avio_rb24(pb); /* flags */
1287 
1288  entries = avio_rb32(pb);
1289 
1290  if (!entries)
1291  return 0;
1292 
1293  if (sc->chunk_offsets)
1294  av_log(c->fc, AV_LOG_WARNING, "Duplicated STCO atom\n");
1295  av_free(sc->chunk_offsets);
1296  sc->chunk_count = 0;
1297  sc->chunk_offsets = av_malloc_array(entries, sizeof(*sc->chunk_offsets));
1298  if (!sc->chunk_offsets)
1299  return AVERROR(ENOMEM);
1300  sc->chunk_count = entries;
1301 
1302  if (atom.type == MKTAG('s','t','c','o'))
1303  for (i = 0; i < entries && !pb->eof_reached; i++)
1304  sc->chunk_offsets[i] = avio_rb32(pb);
1305  else if (atom.type == MKTAG('c','o','6','4'))
1306  for (i = 0; i < entries && !pb->eof_reached; i++)
1307  sc->chunk_offsets[i] = avio_rb64(pb);
1308  else
1309  return AVERROR_INVALIDDATA;
1310 
1311  sc->chunk_count = i;
1312 
1313  if (pb->eof_reached)
1314  return AVERROR_EOF;
1315 
1316  return 0;
1317 }
1318 
1319 /**
1320  * Compute codec id for 'lpcm' tag.
1321  * See CoreAudioTypes and AudioStreamBasicDescription at Apple.
1322  */
1324 {
1325  /* lpcm flags:
1326  * 0x1 = float
1327  * 0x2 = big-endian
1328  * 0x4 = signed
1329  */
1330  return ff_get_pcm_codec_id(bps, flags & 1, flags & 2, flags & 4 ? -1 : 0);
1331 }
1332 
1333 static int mov_codec_id(AVStream *st, uint32_t format)
1334 {
1335  int id = ff_codec_get_id(ff_codec_movaudio_tags, format);
1336 
1337  if (id <= 0 &&
1338  ((format & 0xFFFF) == 'm' + ('s' << 8) ||
1339  (format & 0xFFFF) == 'T' + ('S' << 8)))
1340  id = ff_codec_get_id(ff_codec_wav_tags, av_bswap32(format) & 0xFFFF);
1341 
1342  if (st->codec->codec_type != AVMEDIA_TYPE_VIDEO && id > 0) {
1344  } else if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO &&
1345  /* skip old asf mpeg4 tag */
1346  format && format != MKTAG('m','p','4','s')) {
1348  if (id <= 0)
1349  id = ff_codec_get_id(ff_codec_bmp_tags, format);
1350  if (id > 0)
1352  else if (st->codec->codec_type == AVMEDIA_TYPE_DATA ||
1354  st->codec->codec_id == AV_CODEC_ID_NONE)) {
1356  if (id > 0)
1358  }
1359  }
1360 
1361  st->codec->codec_tag = format;
1362 
1363  return id;
1364 }
1365 
1367  AVStream *st, MOVStreamContext *sc)
1368 {
1369  uint8_t codec_name[32];
1370  unsigned int color_depth, len, j;
1371  int color_greyscale;
1372  int color_table_id;
1373 
1374  avio_rb16(pb); /* version */
1375  avio_rb16(pb); /* revision level */
1376  avio_rb32(pb); /* vendor */
1377  avio_rb32(pb); /* temporal quality */
1378  avio_rb32(pb); /* spatial quality */
1379 
1380  st->codec->width = avio_rb16(pb); /* width */
1381  st->codec->height = avio_rb16(pb); /* height */
1382 
1383  avio_rb32(pb); /* horiz resolution */
1384  avio_rb32(pb); /* vert resolution */
1385  avio_rb32(pb); /* data size, always 0 */
1386  avio_rb16(pb); /* frames per samples */
1387 
1388  len = avio_r8(pb); /* codec name, pascal string */
1389  if (len > 31)
1390  len = 31;
1391  mov_read_mac_string(c, pb, len, codec_name, sizeof(codec_name));
1392  if (len < 31)
1393  avio_skip(pb, 31 - len);
1394 
1395  if (codec_name[0])
1396  av_dict_set(&st->metadata, "encoder", codec_name, 0);
1397 
1398  /* codec_tag YV12 triggers an UV swap in rawdec.c */
1399  if (!memcmp(codec_name, "Planar Y'CbCr 8-bit 4:2:0", 25)) {
1400  st->codec->codec_tag = MKTAG('I', '4', '2', '0');
1401  st->codec->width &= ~1;
1402  st->codec->height &= ~1;
1403  }
1404  /* Flash Media Server uses tag H263 with Sorenson Spark */
1405  if (st->codec->codec_tag == MKTAG('H','2','6','3') &&
1406  !memcmp(codec_name, "Sorenson H263", 13))
1408 
1409  st->codec->bits_per_coded_sample = avio_rb16(pb); /* depth */
1410  color_table_id = avio_rb16(pb); /* colortable id */
1411  av_dlog(c->fc, "depth %d, ctab id %d\n",
1412  st->codec->bits_per_coded_sample, color_table_id);
1413  /* figure out the palette situation */
1414  color_depth = st->codec->bits_per_coded_sample & 0x1F;
1415  color_greyscale = st->codec->bits_per_coded_sample & 0x20;
1416  /* Do not create a greyscale palette for cinepak */
1417  if (color_greyscale && st->codec->codec_id == AV_CODEC_ID_CINEPAK)
1418  return;
1419 
1420  /* if the depth is 2, 4, or 8 bpp, file is palettized */
1421  if ((color_depth == 2) || (color_depth == 4) || (color_depth == 8)) {
1422  /* for palette traversal */
1423  unsigned int color_start, color_count, color_end;
1424  unsigned char a, r, g, b;
1425 
1426  if (color_greyscale) {
1427  int color_index, color_dec;
1428  /* compute the greyscale palette */
1429  st->codec->bits_per_coded_sample = color_depth;
1430  color_count = 1 << color_depth;
1431  color_index = 255;
1432  color_dec = 256 / (color_count - 1);
1433  for (j = 0; j < color_count; j++) {
1434  r = g = b = color_index;
1435  sc->palette[j] = (0xFFU << 24) | (r << 16) | (g << 8) | (b);
1436  color_index -= color_dec;
1437  if (color_index < 0)
1438  color_index = 0;
1439  }
1440  } else if (color_table_id) {
1441  const uint8_t *color_table;
1442  /* if flag bit 3 is set, use the default palette */
1443  color_count = 1 << color_depth;
1444  if (color_depth == 2)
1445  color_table = ff_qt_default_palette_4;
1446  else if (color_depth == 4)
1447  color_table = ff_qt_default_palette_16;
1448  else
1449  color_table = ff_qt_default_palette_256;
1450 
1451  for (j = 0; j < color_count; j++) {
1452  r = color_table[j * 3 + 0];
1453  g = color_table[j * 3 + 1];
1454  b = color_table[j * 3 + 2];
1455  sc->palette[j] = (0xFFU << 24) | (r << 16) | (g << 8) | (b);
1456  }
1457  } else {
1458  /* load the palette from the file */
1459  color_start = avio_rb32(pb);
1460  color_count = avio_rb16(pb);
1461  color_end = avio_rb16(pb);
1462  if ((color_start <= 255) && (color_end <= 255)) {
1463  for (j = color_start; j <= color_end; j++) {
1464  /* each A, R, G, or B component is 16 bits;
1465  * only use the top 8 bits */
1466  a = avio_r8(pb);
1467  avio_r8(pb);
1468  r = avio_r8(pb);
1469  avio_r8(pb);
1470  g = avio_r8(pb);
1471  avio_r8(pb);
1472  b = avio_r8(pb);
1473  avio_r8(pb);
1474  sc->palette[j] = (a << 24 ) | (r << 16) | (g << 8) | (b);
1475  }
1476  }
1477  }
1478  sc->has_palette = 1;
1479  }
1480 }
1481 
1483  AVStream *st, MOVStreamContext *sc)
1484 {
1485  int bits_per_sample, flags;
1486  uint16_t version = avio_rb16(pb);
1487  AVDictionaryEntry *compatible_brands = av_dict_get(c->fc->metadata, "compatible_brands", NULL, AV_DICT_MATCH_CASE);
1488 
1489  avio_rb16(pb); /* revision level */
1490  avio_rb32(pb); /* vendor */
1491 
1492  st->codec->channels = avio_rb16(pb); /* channel count */
1493  st->codec->bits_per_coded_sample = avio_rb16(pb); /* sample size */
1494  av_dlog(c->fc, "audio channels %d\n", st->codec->channels);
1495 
1496  sc->audio_cid = avio_rb16(pb);
1497  avio_rb16(pb); /* packet size = 0 */
1498 
1499  st->codec->sample_rate = ((avio_rb32(pb) >> 16));
1500 
1501  // Read QT version 1 fields. In version 0 these do not exist.
1502  av_dlog(c->fc, "version =%d, isom =%d\n", version, c->isom);
1503  if (!c->isom ||
1504  (compatible_brands && strstr(compatible_brands->value, "qt "))) {
1505 
1506  if (version == 1) {
1507  sc->samples_per_frame = avio_rb32(pb);
1508  avio_rb32(pb); /* bytes per packet */
1509  sc->bytes_per_frame = avio_rb32(pb);
1510  avio_rb32(pb); /* bytes per sample */
1511  } else if (version == 2) {
1512  avio_rb32(pb); /* sizeof struct only */
1514  st->codec->channels = avio_rb32(pb);
1515  avio_rb32(pb); /* always 0x7F000000 */
1517 
1518  flags = avio_rb32(pb); /* lpcm format specific flag */
1519  sc->bytes_per_frame = avio_rb32(pb);
1520  sc->samples_per_frame = avio_rb32(pb);
1521  if (st->codec->codec_tag == MKTAG('l','p','c','m'))
1522  st->codec->codec_id =
1524  flags);
1525  }
1526  }
1527 
1528  switch (st->codec->codec_id) {
1529  case AV_CODEC_ID_PCM_S8:
1530  case AV_CODEC_ID_PCM_U8:
1531  if (st->codec->bits_per_coded_sample == 16)
1533  break;
1534  case AV_CODEC_ID_PCM_S16LE:
1535  case AV_CODEC_ID_PCM_S16BE:
1536  if (st->codec->bits_per_coded_sample == 8)
1538  else if (st->codec->bits_per_coded_sample == 24)
1539  st->codec->codec_id =
1542  else if (st->codec->bits_per_coded_sample == 32)
1543  st->codec->codec_id =
1546  break;
1547  /* set values for old format before stsd version 1 appeared */
1548  case AV_CODEC_ID_MACE3:
1549  sc->samples_per_frame = 6;
1550  sc->bytes_per_frame = 2 * st->codec->channels;
1551  break;
1552  case AV_CODEC_ID_MACE6:
1553  sc->samples_per_frame = 6;
1554  sc->bytes_per_frame = 1 * st->codec->channels;
1555  break;
1557  sc->samples_per_frame = 64;
1558  sc->bytes_per_frame = 34 * st->codec->channels;
1559  break;
1560  case AV_CODEC_ID_GSM:
1561  sc->samples_per_frame = 160;
1562  sc->bytes_per_frame = 33;
1563  break;
1564  default:
1565  break;
1566  }
1567 
1568  bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
1569  if (bits_per_sample) {
1570  st->codec->bits_per_coded_sample = bits_per_sample;
1571  sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
1572  }
1573 }
1574 
1576  AVStream *st, MOVStreamContext *sc,
1577  int64_t size)
1578 {
1579  // ttxt stsd contains display flags, justification, background
1580  // color, fonts, and default styles, so fake an atom to read it
1581  MOVAtom fake_atom = { .size = size };
1582  // mp4s contains a regular esds atom
1583  if (st->codec->codec_tag != AV_RL32("mp4s"))
1584  mov_read_glbl(c, pb, fake_atom);
1585  st->codec->width = sc->width;
1586  st->codec->height = sc->height;
1587 }
1588 
1589 static uint32_t yuv_to_rgba(uint32_t ycbcr)
1590 {
1591  uint8_t r, g, b;
1592  int y, cb, cr;
1593 
1594  y = (ycbcr >> 16) & 0xFF;
1595  cr = (ycbcr >> 8) & 0xFF;
1596  cb = ycbcr & 0xFF;
1597 
1598  b = av_clip_uint8(1.164 * (y - 16) + 2.018 * (cb - 128));
1599  g = av_clip_uint8(1.164 * (y - 16) - 0.813 * (cr - 128) - 0.391 * (cb - 128));
1600  r = av_clip_uint8(1.164 * (y - 16) + 1.596 * (cr - 128));
1601 
1602  return (r << 16) | (g << 8) | b;
1603 }
1604 
1606 {
1607  char buf[256] = {0};
1608  uint8_t *src = st->codec->extradata;
1609  int i;
1610 
1611  if (st->codec->extradata_size != 64)
1612  return 0;
1613 
1614  if (st->codec->width > 0 && st->codec->height > 0)
1615  snprintf(buf, sizeof(buf), "size: %dx%d\n",
1616  st->codec->width, st->codec->height);
1617  av_strlcat(buf, "palette: ", sizeof(buf));
1618 
1619  for (i = 0; i < 16; i++) {
1620  uint32_t yuv = AV_RB32(src + i * 4);
1621  uint32_t rgba = yuv_to_rgba(yuv);
1622 
1623  av_strlcatf(buf, sizeof(buf), "%06"PRIx32"%s", rgba, i != 15 ? ", " : "");
1624  }
1625 
1626  if (av_strlcat(buf, "\n", sizeof(buf)) >= sizeof(buf))
1627  return 0;
1628 
1629  av_freep(&st->codec->extradata);
1630  st->codec->extradata_size = 0;
1632  if (!st->codec->extradata)
1633  return AVERROR(ENOMEM);
1634  st->codec->extradata_size = strlen(buf);
1635  memcpy(st->codec->extradata, buf, st->codec->extradata_size);
1636 
1637  return 0;
1638 }
1639 
1641  AVStream *st, MOVStreamContext *sc,
1642  int64_t size)
1643 {
1644  if (st->codec->codec_tag == MKTAG('t','m','c','d')) {
1645  if ((int)size != size || ff_get_extradata(st->codec, pb, size) < 0)
1646  return AVERROR(ENOMEM);
1647  if (size > 16) {
1648  MOVStreamContext *tmcd_ctx = st->priv_data;
1649  int val;
1650  val = AV_RB32(st->codec->extradata + 4);
1651  tmcd_ctx->tmcd_flags = val;
1652  if (val & 1)
1654  st->codec->time_base.den = st->codec->extradata[16]; /* number of frame */
1655  st->codec->time_base.num = 1;
1656  if (size > 30) {
1657  uint32_t len = AV_RB32(st->codec->extradata + 18); /* name atom length */
1658  uint32_t format = AV_RB32(st->codec->extradata + 22);
1659  if (format == AV_RB32("name") && (int64_t)size >= (int64_t)len + 18) {
1660  uint16_t str_size = AV_RB16(st->codec->extradata + 26); /* string length */
1661  if (str_size > 0 && size >= (int)str_size + 26) {
1662  char *reel_name = av_malloc(str_size + 1);
1663  if (!reel_name)
1664  return AVERROR(ENOMEM);
1665  memcpy(reel_name, st->codec->extradata + 30, str_size);
1666  reel_name[str_size] = 0; /* Add null terminator */
1667  /* don't add reel_name if emtpy string */
1668  if (*reel_name == 0) {
1669  av_free(reel_name);
1670  } else {
1671  av_dict_set(&st->metadata, "reel_name", reel_name, AV_DICT_DONT_STRDUP_VAL);
1672  }
1673  }
1674  }
1675  }
1676  }
1677  } else {
1678  /* other codec type, just skip (rtp, mp4s ...) */
1679  avio_skip(pb, size);
1680  }
1681  return 0;
1682 }
1683 
1685  AVStream *st, MOVStreamContext *sc)
1686 {
1687  if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
1688  !st->codec->sample_rate && sc->time_scale > 1)
1689  st->codec->sample_rate = sc->time_scale;
1690 
1691  /* special codec parameters handling */
1692  switch (st->codec->codec_id) {
1693 #if CONFIG_DV_DEMUXER
1694  case AV_CODEC_ID_DVAUDIO:
1697  if (!c->dv_demux) {
1698  av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
1699  return AVERROR(ENOMEM);
1700  }
1701  sc->dv_audio_container = 1;
1703  break;
1704 #endif
1705  /* no ifdef since parameters are always those */
1706  case AV_CODEC_ID_QCELP:
1707  st->codec->channels = 1;
1708  // force sample rate for qcelp when not stored in mov
1709  if (st->codec->codec_tag != MKTAG('Q','c','l','p'))
1710  st->codec->sample_rate = 8000;
1711  // FIXME: Why is the following needed for some files?
1712  sc->samples_per_frame = 160;
1713  if (!sc->bytes_per_frame)
1714  sc->bytes_per_frame = 35;
1715  break;
1716  case AV_CODEC_ID_AMR_NB:
1717  st->codec->channels = 1;
1718  /* force sample rate for amr, stsd in 3gp does not store sample rate */
1719  st->codec->sample_rate = 8000;
1720  break;
1721  case AV_CODEC_ID_AMR_WB:
1722  st->codec->channels = 1;
1723  st->codec->sample_rate = 16000;
1724  break;
1725  case AV_CODEC_ID_MP2:
1726  case AV_CODEC_ID_MP3:
1727  /* force type after stsd for m1a hdlr */
1730  break;
1731  case AV_CODEC_ID_GSM:
1732  case AV_CODEC_ID_ADPCM_MS:
1734  case AV_CODEC_ID_ILBC:
1735  case AV_CODEC_ID_MACE3:
1736  case AV_CODEC_ID_MACE6:
1737  case AV_CODEC_ID_QDM2:
1738  st->codec->block_align = sc->bytes_per_frame;
1739  break;
1740  case AV_CODEC_ID_ALAC:
1741  if (st->codec->extradata_size == 36) {
1742  st->codec->channels = AV_RB8 (st->codec->extradata + 21);
1743  st->codec->sample_rate = AV_RB32(st->codec->extradata + 32);
1744  }
1745  break;
1746  case AV_CODEC_ID_AC3:
1747  case AV_CODEC_ID_EAC3:
1749  case AV_CODEC_ID_VC1:
1751  break;
1752  default:
1753  break;
1754  }
1755  return 0;
1756 }
1757 
1759  int codec_tag, int format,
1760  int64_t size)
1761 {
1762  int video_codec_id = ff_codec_get_id(ff_codec_movvideo_tags, format);
1763 
1764  if (codec_tag &&
1765  (codec_tag != format &&
1766  (c->fc->video_codec_id ? video_codec_id != c->fc->video_codec_id
1767  : codec_tag != MKTAG('j','p','e','g')))) {
1768  /* Multiple fourcc, we skip JPEG. This is not correct, we should
1769  * export it as a separate AVStream but this needs a few changes
1770  * in the MOV demuxer, patch welcome. */
1771 
1772  av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n");
1773  avio_skip(pb, size);
1774  return 1;
1775  }
1776  if ( codec_tag == AV_RL32("avc1") ||
1777  codec_tag == AV_RL32("hvc1") ||
1778  codec_tag == AV_RL32("hev1")
1779  )
1780  av_log(c->fc, AV_LOG_WARNING, "Concatenated H.264 or H.265 might not play correctly.\n");
1781 
1782  return 0;
1783 }
1784 
1786 {
1787  AVStream *st;
1788  MOVStreamContext *sc;
1789  int pseudo_stream_id;
1790 
1791  if (c->fc->nb_streams < 1)
1792  return 0;
1793  st = c->fc->streams[c->fc->nb_streams-1];
1794  sc = st->priv_data;
1795 
1796  for (pseudo_stream_id = 0;
1797  pseudo_stream_id < entries && !pb->eof_reached;
1798  pseudo_stream_id++) {
1799  //Parsing Sample description table
1800  enum AVCodecID id;
1801  int ret, dref_id = 1;
1802  MOVAtom a = { AV_RL32("stsd") };
1803  int64_t start_pos = avio_tell(pb);
1804  int64_t size = avio_rb32(pb); /* size */
1805  uint32_t format = avio_rl32(pb); /* data format */
1806 
1807  if (size >= 16) {
1808  avio_rb32(pb); /* reserved */
1809  avio_rb16(pb); /* reserved */
1810  dref_id = avio_rb16(pb);
1811  }else if (size <= 7){
1812  av_log(c->fc, AV_LOG_ERROR, "invalid size %"PRId64" in stsd\n", size);
1813  return AVERROR_INVALIDDATA;
1814  }
1815 
1816  if (mov_skip_multiple_stsd(c, pb, st->codec->codec_tag, format,
1817  size - (avio_tell(pb) - start_pos)))
1818  continue;
1819 
1820  sc->pseudo_stream_id = st->codec->codec_tag ? -1 : pseudo_stream_id;
1821  sc->dref_id= dref_id;
1822 
1823  id = mov_codec_id(st, format);
1824 
1825  av_dlog(c->fc, "size=%"PRId64" 4CC= %c%c%c%c codec_type=%d\n", size,
1826  (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff,
1827  (format >> 24) & 0xff, st->codec->codec_type);
1828 
1829  if (st->codec->codec_type==AVMEDIA_TYPE_VIDEO) {
1830  st->codec->codec_id = id;
1831  mov_parse_stsd_video(c, pb, st, sc);
1832  } else if (st->codec->codec_type==AVMEDIA_TYPE_AUDIO) {
1833  st->codec->codec_id = id;
1834  mov_parse_stsd_audio(c, pb, st, sc);
1835  } else if (st->codec->codec_type==AVMEDIA_TYPE_SUBTITLE){
1836  st->codec->codec_id = id;
1837  mov_parse_stsd_subtitle(c, pb, st, sc,
1838  size - (avio_tell(pb) - start_pos));
1839  } else {
1840  ret = mov_parse_stsd_data(c, pb, st, sc,
1841  size - (avio_tell(pb) - start_pos));
1842  if (ret < 0)
1843  return ret;
1844  }
1845  /* this will read extra atoms at the end (wave, alac, damr, avcC, hvcC, SMI ...) */
1846  a.size = size - (avio_tell(pb) - start_pos);
1847  if (a.size > 8) {
1848  if ((ret = mov_read_default(c, pb, a)) < 0)
1849  return ret;
1850  } else if (a.size > 0)
1851  avio_skip(pb, a.size);
1852  }
1853 
1854  if (pb->eof_reached)
1855  return AVERROR_EOF;
1856 
1857  return mov_finalize_stsd_codec(c, pb, st, sc);
1858 }
1859 
1861 {
1862  int entries;
1863 
1864  avio_r8(pb); /* version */
1865  avio_rb24(pb); /* flags */
1866  entries = avio_rb32(pb);
1867 
1868  return ff_mov_read_stsd_entries(c, pb, entries);
1869 }
1870 
1872 {
1873  AVStream *st;
1874  MOVStreamContext *sc;
1875  unsigned int i, entries;
1876 
1877  if (c->fc->nb_streams < 1)
1878  return 0;
1879  st = c->fc->streams[c->fc->nb_streams-1];
1880  sc = st->priv_data;
1881 
1882  avio_r8(pb); /* version */
1883  avio_rb24(pb); /* flags */
1884 
1885  entries = avio_rb32(pb);
1886 
1887  av_dlog(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
1888 
1889  if (!entries)
1890  return 0;
1891  if (sc->stsc_data)
1892  av_log(c->fc, AV_LOG_WARNING, "Duplicated STSC atom\n");
1893  av_free(sc->stsc_data);
1894  sc->stsc_count = 0;
1895  sc->stsc_data = av_malloc_array(entries, sizeof(*sc->stsc_data));
1896  if (!sc->stsc_data)
1897  return AVERROR(ENOMEM);
1898 
1899  for (i = 0; i < entries && !pb->eof_reached; i++) {
1900  sc->stsc_data[i].first = avio_rb32(pb);
1901  sc->stsc_data[i].count = avio_rb32(pb);
1902  sc->stsc_data[i].id = avio_rb32(pb);
1903  }
1904 
1905  sc->stsc_count = i;
1906 
1907  if (pb->eof_reached)
1908  return AVERROR_EOF;
1909 
1910  return 0;
1911 }
1912 
1914 {
1915  AVStream *st;
1916  MOVStreamContext *sc;
1917  unsigned i, entries;
1918 
1919  if (c->fc->nb_streams < 1)
1920  return 0;
1921  st = c->fc->streams[c->fc->nb_streams-1];
1922  sc = st->priv_data;
1923 
1924  avio_rb32(pb); // version + flags
1925 
1926  entries = avio_rb32(pb);
1927  if (sc->stps_data)
1928  av_log(c->fc, AV_LOG_WARNING, "Duplicated STPS atom\n");
1929  av_free(sc->stps_data);
1930  sc->stps_count = 0;
1931  sc->stps_data = av_malloc_array(entries, sizeof(*sc->stps_data));
1932  if (!sc->stps_data)
1933  return AVERROR(ENOMEM);
1934 
1935  for (i = 0; i < entries && !pb->eof_reached; i++) {
1936  sc->stps_data[i] = avio_rb32(pb);
1937  //av_dlog(c->fc, "stps %d\n", sc->stps_data[i]);
1938  }
1939 
1940  sc->stps_count = i;
1941 
1942  if (pb->eof_reached)
1943  return AVERROR_EOF;
1944 
1945  return 0;
1946 }
1947 
1949 {
1950  AVStream *st;
1951  MOVStreamContext *sc;
1952  unsigned int i, entries;
1953 
1954  if (c->fc->nb_streams < 1)
1955  return 0;
1956  st = c->fc->streams[c->fc->nb_streams-1];
1957  sc = st->priv_data;
1958 
1959  avio_r8(pb); /* version */
1960  avio_rb24(pb); /* flags */
1961 
1962  entries = avio_rb32(pb);
1963 
1964  av_dlog(c->fc, "keyframe_count = %d\n", entries);
1965 
1966  if (!entries)
1967  {
1968  sc->keyframe_absent = 1;
1969  if (!st->need_parsing && st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
1971  return 0;
1972  }
1973  if (sc->keyframes)
1974  av_log(c->fc, AV_LOG_WARNING, "Duplicated STSS atom\n");
1975  av_free(sc->keyframes);
1976  sc->keyframe_count = 0;
1977  sc->keyframes = av_malloc_array(entries, sizeof(*sc->keyframes));
1978  if (!sc->keyframes)
1979  return AVERROR(ENOMEM);
1980 
1981  for (i = 0; i < entries && !pb->eof_reached; i++) {
1982  sc->keyframes[i] = avio_rb32(pb);
1983  //av_dlog(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
1984  }
1985 
1986  sc->keyframe_count = i;
1987 
1988  if (pb->eof_reached)
1989  return AVERROR_EOF;
1990 
1991  return 0;
1992 }
1993 
1995 {
1996  AVStream *st;
1997  MOVStreamContext *sc;
1998  unsigned int i, entries, sample_size, field_size, num_bytes;
1999  GetBitContext gb;
2000  unsigned char* buf;
2001 
2002  if (c->fc->nb_streams < 1)
2003  return 0;
2004  st = c->fc->streams[c->fc->nb_streams-1];
2005  sc = st->priv_data;
2006 
2007  avio_r8(pb); /* version */
2008  avio_rb24(pb); /* flags */
2009 
2010  if (atom.type == MKTAG('s','t','s','z')) {
2011  sample_size = avio_rb32(pb);
2012  if (!sc->sample_size) /* do not overwrite value computed in stsd */
2013  sc->sample_size = sample_size;
2014  sc->stsz_sample_size = sample_size;
2015  field_size = 32;
2016  } else {
2017  sample_size = 0;
2018  avio_rb24(pb); /* reserved */
2019  field_size = avio_r8(pb);
2020  }
2021  entries = avio_rb32(pb);
2022 
2023  av_dlog(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, entries);
2024 
2025  sc->sample_count = entries;
2026  if (sample_size)
2027  return 0;
2028 
2029  if (field_size != 4 && field_size != 8 && field_size != 16 && field_size != 32) {
2030  av_log(c->fc, AV_LOG_ERROR, "Invalid sample field size %d\n", field_size);
2031  return AVERROR_INVALIDDATA;
2032  }
2033 
2034  if (!entries)
2035  return 0;
2036  if (entries >= (UINT_MAX - 4) / field_size)
2037  return AVERROR_INVALIDDATA;
2038  if (sc->sample_sizes)
2039  av_log(c->fc, AV_LOG_WARNING, "Duplicated STSZ atom\n");
2040  av_free(sc->sample_sizes);
2041  sc->sample_count = 0;
2042  sc->sample_sizes = av_malloc_array(entries, sizeof(*sc->sample_sizes));
2043  if (!sc->sample_sizes)
2044  return AVERROR(ENOMEM);
2045 
2046  num_bytes = (entries*field_size+4)>>3;
2047 
2048  buf = av_malloc(num_bytes+FF_INPUT_BUFFER_PADDING_SIZE);
2049  if (!buf) {
2050  av_freep(&sc->sample_sizes);
2051  return AVERROR(ENOMEM);
2052  }
2053 
2054  if (avio_read(pb, buf, num_bytes) < num_bytes) {
2055  av_freep(&sc->sample_sizes);
2056  av_free(buf);
2057  return AVERROR_INVALIDDATA;
2058  }
2059 
2060  init_get_bits(&gb, buf, 8*num_bytes);
2061 
2062  for (i = 0; i < entries && !pb->eof_reached; i++) {
2063  sc->sample_sizes[i] = get_bits_long(&gb, field_size);
2064  sc->data_size += sc->sample_sizes[i];
2065  }
2066 
2067  sc->sample_count = i;
2068 
2069  if (pb->eof_reached)
2070  return AVERROR_EOF;
2071 
2072  av_free(buf);
2073  return 0;
2074 }
2075 
2077 {
2078  AVStream *st;
2079  MOVStreamContext *sc;
2080  unsigned int i, entries;
2081  int64_t duration=0;
2082  int64_t total_sample_count=0;
2083 
2084  if (c->fc->nb_streams < 1)
2085  return 0;
2086  st = c->fc->streams[c->fc->nb_streams-1];
2087  sc = st->priv_data;
2088 
2089  avio_r8(pb); /* version */
2090  avio_rb24(pb); /* flags */
2091  entries = avio_rb32(pb);
2092 
2093  av_dlog(c->fc, "track[%i].stts.entries = %i\n",
2094  c->fc->nb_streams-1, entries);
2095 
2096  if (sc->stts_data)
2097  av_log(c->fc, AV_LOG_WARNING, "Duplicated STTS atom\n");
2098  av_free(sc->stts_data);
2099  sc->stts_count = 0;
2100  sc->stts_data = av_malloc_array(entries, sizeof(*sc->stts_data));
2101  if (!sc->stts_data)
2102  return AVERROR(ENOMEM);
2103 
2104  for (i = 0; i < entries && !pb->eof_reached; i++) {
2105  int sample_duration;
2106  int sample_count;
2107 
2108  sample_count=avio_rb32(pb);
2109  sample_duration = avio_rb32(pb);
2110 
2111  /* sample_duration < 0 is invalid based on the spec */
2112  if (sample_duration < 0) {
2113  av_log(c->fc, AV_LOG_ERROR, "Invalid SampleDelta %d in STTS, at %d st:%d\n",
2114  sample_duration, i, c->fc->nb_streams-1);
2115  sample_duration = 1;
2116  }
2117  if (sample_count < 0) {
2118  av_log(c->fc, AV_LOG_ERROR, "Invalid sample_count=%d\n", sample_count);
2119  return AVERROR_INVALIDDATA;
2120  }
2121  sc->stts_data[i].count= sample_count;
2122  sc->stts_data[i].duration= sample_duration;
2123 
2124  av_dlog(c->fc, "sample_count=%d, sample_duration=%d\n",
2125  sample_count, sample_duration);
2126 
2127  if ( i+1 == entries
2128  && i
2129  && sample_count == 1
2130  && total_sample_count > 100
2131  && sample_duration/10 > duration / total_sample_count)
2132  sample_duration = duration / total_sample_count;
2133  duration+=(int64_t)sample_duration*sample_count;
2134  total_sample_count+=sample_count;
2135  }
2136 
2137  sc->stts_count = i;
2138 
2139  sc->duration_for_fps += duration;
2140  sc->nb_frames_for_fps += total_sample_count;
2141 
2142  if (pb->eof_reached)
2143  return AVERROR_EOF;
2144 
2145  st->nb_frames= total_sample_count;
2146  if (duration)
2147  st->duration= duration;
2148  sc->track_end = duration;
2149  return 0;
2150 }
2151 
2153 {
2154  if (duration < 0) {
2155  sc->dts_shift = FFMAX(sc->dts_shift, -duration);
2156  }
2157 }
2158 
2160 {
2161  AVStream *st;
2162  MOVStreamContext *sc;
2163  unsigned int i, entries;
2164 
2165  if (c->fc->nb_streams < 1)
2166  return 0;
2167  st = c->fc->streams[c->fc->nb_streams-1];
2168  sc = st->priv_data;
2169 
2170  avio_r8(pb); /* version */
2171  avio_rb24(pb); /* flags */
2172  entries = avio_rb32(pb);
2173 
2174  av_dlog(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
2175 
2176  if (!entries)
2177  return 0;
2178  if (entries >= UINT_MAX / sizeof(*sc->ctts_data))
2179  return AVERROR_INVALIDDATA;
2180  sc->ctts_data = av_malloc(entries * sizeof(*sc->ctts_data));
2181  if (!sc->ctts_data)
2182  return AVERROR(ENOMEM);
2183 
2184  for (i = 0; i < entries && !pb->eof_reached; i++) {
2185  int count =avio_rb32(pb);
2186  int duration =avio_rb32(pb);
2187 
2188  sc->ctts_data[i].count = count;
2189  sc->ctts_data[i].duration= duration;
2190 
2191  av_dlog(c->fc, "count=%d, duration=%d\n",
2192  count, duration);
2193 
2194  if (FFABS(duration) > (1<<28) && i+2<entries) {
2195  av_log(c->fc, AV_LOG_WARNING, "CTTS invalid\n");
2196  av_freep(&sc->ctts_data);
2197  sc->ctts_count = 0;
2198  return 0;
2199  }
2200 
2201  if (i+2<entries)
2202  mov_update_dts_shift(sc, duration);
2203  }
2204 
2205  sc->ctts_count = i;
2206 
2207  if (pb->eof_reached)
2208  return AVERROR_EOF;
2209 
2210  av_dlog(c->fc, "dts shift %d\n", sc->dts_shift);
2211 
2212  return 0;
2213 }
2214 
2216 {
2217  AVStream *st;
2218  MOVStreamContext *sc;
2219  unsigned int i, entries;
2220  uint8_t version;
2221  uint32_t grouping_type;
2222 
2223  if (c->fc->nb_streams < 1)
2224  return 0;
2225  st = c->fc->streams[c->fc->nb_streams-1];
2226  sc = st->priv_data;
2227 
2228  version = avio_r8(pb); /* version */
2229  avio_rb24(pb); /* flags */
2230  grouping_type = avio_rl32(pb);
2231  if (grouping_type != MKTAG( 'r','a','p',' '))
2232  return 0; /* only support 'rap ' grouping */
2233  if (version == 1)
2234  avio_rb32(pb); /* grouping_type_parameter */
2235 
2236  entries = avio_rb32(pb);
2237  if (!entries)
2238  return 0;
2239  if (sc->rap_group)
2240  av_log(c->fc, AV_LOG_WARNING, "Duplicated SBGP atom\n");
2241  av_free(sc->rap_group);
2242  sc->rap_group_count = 0;
2243  sc->rap_group = av_malloc_array(entries, sizeof(*sc->rap_group));
2244  if (!sc->rap_group)
2245  return AVERROR(ENOMEM);
2246 
2247  for (i = 0; i < entries && !pb->eof_reached; i++) {
2248  sc->rap_group[i].count = avio_rb32(pb); /* sample_count */
2249  sc->rap_group[i].index = avio_rb32(pb); /* group_description_index */
2250  }
2251 
2252  sc->rap_group_count = i;
2253 
2254  return pb->eof_reached ? AVERROR_EOF : 0;
2255 }
2256 
2257 static void mov_build_index(MOVContext *mov, AVStream *st)
2258 {
2259  MOVStreamContext *sc = st->priv_data;
2260  int64_t current_offset;
2261  int64_t current_dts = 0;
2262  unsigned int stts_index = 0;
2263  unsigned int stsc_index = 0;
2264  unsigned int stss_index = 0;
2265  unsigned int stps_index = 0;
2266  unsigned int i, j;
2267  uint64_t stream_size = 0;
2268 
2269  /* adjust first dts according to edit list */
2270  if ((sc->empty_duration || sc->start_time) && mov->time_scale > 0) {
2271  if (sc->empty_duration)
2273  sc->time_offset = sc->start_time - sc->empty_duration;
2274  current_dts = -sc->time_offset;
2275  if (sc->ctts_count>0 && sc->stts_count>0 &&
2276  sc->ctts_data[0].duration / FFMAX(sc->stts_data[0].duration, 1) > 16) {
2277  /* more than 16 frames delay, dts are likely wrong
2278  this happens with files created by iMovie */
2279  sc->wrong_dts = 1;
2280  st->codec->has_b_frames = 1;
2281  }
2282  }
2283 
2284  /* only use old uncompressed audio chunk demuxing when stts specifies it */
2285  if (!(st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
2286  sc->stts_count == 1 && sc->stts_data[0].duration == 1)) {
2287  unsigned int current_sample = 0;
2288  unsigned int stts_sample = 0;
2289  unsigned int sample_size;
2290  unsigned int distance = 0;
2291  unsigned int rap_group_index = 0;
2292  unsigned int rap_group_sample = 0;
2293  int rap_group_present = sc->rap_group_count && sc->rap_group;
2294  int key_off = (sc->keyframe_count && sc->keyframes[0] > 0) || (sc->stps_count && sc->stps_data[0] > 0);
2295 
2296  current_dts -= sc->dts_shift;
2297 
2298  if (!sc->sample_count || st->nb_index_entries)
2299  return;
2300  if (sc->sample_count >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries)
2301  return;
2303  st->nb_index_entries + sc->sample_count,
2304  sizeof(*st->index_entries)) < 0) {
2305  st->nb_index_entries = 0;
2306  return;
2307  }
2309 
2310  for (i = 0; i < sc->chunk_count; i++) {
2311  int64_t next_offset = i+1 < sc->chunk_count ? sc->chunk_offsets[i+1] : INT64_MAX;
2312  current_offset = sc->chunk_offsets[i];
2313  while (stsc_index + 1 < sc->stsc_count &&
2314  i + 1 == sc->stsc_data[stsc_index + 1].first)
2315  stsc_index++;
2316 
2317  if (next_offset > current_offset && sc->sample_size>0 && sc->sample_size < sc->stsz_sample_size &&
2318  sc->stsc_data[stsc_index].count * (int64_t)sc->stsz_sample_size > next_offset - current_offset) {
2319  av_log(mov->fc, AV_LOG_WARNING, "STSZ sample size %d invalid (too large), ignoring\n", sc->stsz_sample_size);
2320  sc->stsz_sample_size = sc->sample_size;
2321  }
2322  if (sc->stsz_sample_size>0 && sc->stsz_sample_size < sc->sample_size) {
2323  av_log(mov->fc, AV_LOG_WARNING, "STSZ sample size %d invalid (too small), ignoring\n", sc->stsz_sample_size);
2324  sc->stsz_sample_size = sc->sample_size;
2325  }
2326 
2327  for (j = 0; j < sc->stsc_data[stsc_index].count; j++) {
2328  int keyframe = 0;
2329  if (current_sample >= sc->sample_count) {
2330  av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
2331  return;
2332  }
2333 
2334  if (!sc->keyframe_absent && (!sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index])) {
2335  keyframe = 1;
2336  if (stss_index + 1 < sc->keyframe_count)
2337  stss_index++;
2338  } else if (sc->stps_count && current_sample+key_off == sc->stps_data[stps_index]) {
2339  keyframe = 1;
2340  if (stps_index + 1 < sc->stps_count)
2341  stps_index++;
2342  }
2343  if (rap_group_present && rap_group_index < sc->rap_group_count) {
2344  if (sc->rap_group[rap_group_index].index > 0)
2345  keyframe = 1;
2346  if (++rap_group_sample == sc->rap_group[rap_group_index].count) {
2347  rap_group_sample = 0;
2348  rap_group_index++;
2349  }
2350  }
2351  if (sc->keyframe_absent
2352  && !sc->stps_count
2353  && !rap_group_present
2354  && (st->codec->codec_type == AVMEDIA_TYPE_AUDIO || (i==0 && j==0)))
2355  keyframe = 1;
2356  if (keyframe)
2357  distance = 0;
2358  sample_size = sc->stsz_sample_size > 0 ? sc->stsz_sample_size : sc->sample_sizes[current_sample];
2359  if (sc->pseudo_stream_id == -1 ||
2360  sc->stsc_data[stsc_index].id - 1 == sc->pseudo_stream_id) {
2361  AVIndexEntry *e = &st->index_entries[st->nb_index_entries++];
2362  e->pos = current_offset;
2363  e->timestamp = current_dts;
2364  e->size = sample_size;
2365  e->min_distance = distance;
2366  e->flags = keyframe ? AVINDEX_KEYFRAME : 0;
2367  av_dlog(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
2368  "size %d, distance %d, keyframe %d\n", st->index, current_sample,
2369  current_offset, current_dts, sample_size, distance, keyframe);
2370  if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && st->nb_index_entries < 100)
2371  ff_rfps_add_frame(mov->fc, st, current_dts);
2372  }
2373 
2374  current_offset += sample_size;
2375  stream_size += sample_size;
2376  current_dts += sc->stts_data[stts_index].duration;
2377  distance++;
2378  stts_sample++;
2379  current_sample++;
2380  if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
2381  stts_sample = 0;
2382  stts_index++;
2383  }
2384  }
2385  }
2386  if (st->duration > 0)
2387  st->codec->bit_rate = stream_size*8*sc->time_scale/st->duration;
2388  } else {
2389  unsigned chunk_samples, total = 0;
2390 
2391  // compute total chunk count
2392  for (i = 0; i < sc->stsc_count; i++) {
2393  unsigned count, chunk_count;
2394 
2395  chunk_samples = sc->stsc_data[i].count;
2396  if (i != sc->stsc_count - 1 &&
2397  sc->samples_per_frame && chunk_samples % sc->samples_per_frame) {
2398  av_log(mov->fc, AV_LOG_ERROR, "error unaligned chunk\n");
2399  return;
2400  }
2401 
2402  if (sc->samples_per_frame >= 160) { // gsm
2403  count = chunk_samples / sc->samples_per_frame;
2404  } else if (sc->samples_per_frame > 1) {
2405  unsigned samples = (1024/sc->samples_per_frame)*sc->samples_per_frame;
2406  count = (chunk_samples+samples-1) / samples;
2407  } else {
2408  count = (chunk_samples+1023) / 1024;
2409  }
2410 
2411  if (i < sc->stsc_count - 1)
2412  chunk_count = sc->stsc_data[i+1].first - sc->stsc_data[i].first;
2413  else
2414  chunk_count = sc->chunk_count - (sc->stsc_data[i].first - 1);
2415  total += chunk_count * count;
2416  }
2417 
2418  av_dlog(mov->fc, "chunk count %d\n", total);
2419  if (total >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries)
2420  return;
2422  st->nb_index_entries + total,
2423  sizeof(*st->index_entries)) < 0) {
2424  st->nb_index_entries = 0;
2425  return;
2426  }
2427  st->index_entries_allocated_size = (st->nb_index_entries + total) * sizeof(*st->index_entries);
2428 
2429  // populate index
2430  for (i = 0; i < sc->chunk_count; i++) {
2431  current_offset = sc->chunk_offsets[i];
2432  if (stsc_index + 1 < sc->stsc_count &&
2433  i + 1 == sc->stsc_data[stsc_index + 1].first)
2434  stsc_index++;
2435  chunk_samples = sc->stsc_data[stsc_index].count;
2436 
2437  while (chunk_samples > 0) {
2438  AVIndexEntry *e;
2439  unsigned size, samples;
2440 
2441  if (sc->samples_per_frame >= 160) { // gsm
2442  samples = sc->samples_per_frame;
2443  size = sc->bytes_per_frame;
2444  } else {
2445  if (sc->samples_per_frame > 1) {
2446  samples = FFMIN((1024 / sc->samples_per_frame)*
2447  sc->samples_per_frame, chunk_samples);
2448  size = (samples / sc->samples_per_frame) * sc->bytes_per_frame;
2449  } else {
2450  samples = FFMIN(1024, chunk_samples);
2451  size = samples * sc->sample_size;
2452  }
2453  }
2454 
2455  if (st->nb_index_entries >= total) {
2456  av_log(mov->fc, AV_LOG_ERROR, "wrong chunk count %d\n", total);
2457  return;
2458  }
2459  e = &st->index_entries[st->nb_index_entries++];
2460  e->pos = current_offset;
2461  e->timestamp = current_dts;
2462  e->size = size;
2463  e->min_distance = 0;
2464  e->flags = AVINDEX_KEYFRAME;
2465  av_dlog(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", "
2466  "size %d, duration %d\n", st->index, i, current_offset, current_dts,
2467  size, samples);
2468 
2469  current_offset += size;
2470  current_dts += samples;
2471  chunk_samples -= samples;
2472  }
2473  }
2474  }
2475 }
2476 
2477 static int mov_open_dref(AVIOContext **pb, const char *src, MOVDref *ref,
2478  AVIOInterruptCB *int_cb, int use_absolute_path, AVFormatContext *fc)
2479 {
2480  /* try relative path, we do not try the absolute because it can leak information about our
2481  system to an attacker */
2482  if (ref->nlvl_to > 0 && ref->nlvl_from > 0) {
2483  char filename[1024];
2484  const char *src_path;
2485  int i, l;
2486 
2487  /* find a source dir */
2488  src_path = strrchr(src, '/');
2489  if (src_path)
2490  src_path++;
2491  else
2492  src_path = src;
2493 
2494  /* find a next level down to target */
2495  for (i = 0, l = strlen(ref->path) - 1; l >= 0; l--)
2496  if (ref->path[l] == '/') {
2497  if (i == ref->nlvl_to - 1)
2498  break;
2499  else
2500  i++;
2501  }
2502 
2503  /* compose filename if next level down to target was found */
2504  if (i == ref->nlvl_to - 1 && src_path - src < sizeof(filename)) {
2505  memcpy(filename, src, src_path - src);
2506  filename[src_path - src] = 0;
2507 
2508  for (i = 1; i < ref->nlvl_from; i++)
2509  av_strlcat(filename, "../", 1024);
2510 
2511  av_strlcat(filename, ref->path + l + 1, 1024);
2512 
2513  if (!avio_open2(pb, filename, AVIO_FLAG_READ, int_cb, NULL))
2514  return 0;
2515  }
2516  } else if (use_absolute_path) {
2517  av_log(fc, AV_LOG_WARNING, "Using absolute path on user request, "
2518  "this is a possible security issue\n");
2519  if (!avio_open2(pb, ref->path, AVIO_FLAG_READ, int_cb, NULL))
2520  return 0;
2521  }
2522 
2523  return AVERROR(ENOENT);
2524 }
2525 
2527 {
2528  if (sc->time_scale <= 0) {
2529  av_log(c->fc, AV_LOG_WARNING, "stream %d, timescale not set\n", sc->ffindex);
2530  sc->time_scale = c->time_scale;
2531  if (sc->time_scale <= 0)
2532  sc->time_scale = 1;
2533  }
2534 }
2535 
2537 {
2538  AVStream *st;
2539  MOVStreamContext *sc;
2540  int ret;
2541 
2542  st = avformat_new_stream(c->fc, NULL);
2543  if (!st) return AVERROR(ENOMEM);
2544  st->id = c->fc->nb_streams;
2545  sc = av_mallocz(sizeof(MOVStreamContext));
2546  if (!sc) return AVERROR(ENOMEM);
2547 
2548  st->priv_data = sc;
2550  sc->ffindex = st->index;
2551 
2552  if ((ret = mov_read_default(c, pb, atom)) < 0)
2553  return ret;
2554 
2555  /* sanity checks */
2556  if (sc->chunk_count && (!sc->stts_count || !sc->stsc_count ||
2557  (!sc->sample_size && !sc->sample_count))) {
2558  av_log(c->fc, AV_LOG_ERROR, "stream %d, missing mandatory atoms, broken header\n",
2559  st->index);
2560  return 0;
2561  }
2562 
2563  fix_timescale(c, sc);
2564 
2565  avpriv_set_pts_info(st, 64, 1, sc->time_scale);
2566 
2567  mov_build_index(c, st);
2568 
2569  if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) {
2570  MOVDref *dref = &sc->drefs[sc->dref_id - 1];
2571  if (mov_open_dref(&sc->pb, c->fc->filename, dref, &c->fc->interrupt_callback,
2572  c->use_absolute_path, c->fc) < 0)
2573  av_log(c->fc, AV_LOG_ERROR,
2574  "stream %d, error opening alias: path='%s', dir='%s', "
2575  "filename='%s', volume='%s', nlvl_from=%d, nlvl_to=%d\n",
2576  st->index, dref->path, dref->dir, dref->filename,
2577  dref->volume, dref->nlvl_from, dref->nlvl_to);
2578  } else {
2579  sc->pb = c->fc->pb;
2580  sc->pb_is_copied = 1;
2581  }
2582 
2583  if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2584  if (!st->sample_aspect_ratio.num &&
2585  (st->codec->width != sc->width || st->codec->height != sc->height)) {
2586  st->sample_aspect_ratio = av_d2q(((double)st->codec->height * sc->width) /
2587  ((double)st->codec->width * sc->height), INT_MAX);
2588  }
2589 
2590 #if FF_API_R_FRAME_RATE
2591  if (sc->stts_count == 1 || (sc->stts_count == 2 && sc->stts_data[1].count == 1))
2593  sc->time_scale, sc->stts_data[0].duration, INT_MAX);
2594 #endif
2595  }
2596 
2597  // done for ai5q, ai52, ai55, ai1q, ai12 and ai15.
2598  if (!st->codec->extradata_size && st->codec->codec_id == AV_CODEC_ID_H264 &&
2599  TAG_IS_AVCI(st->codec->codec_tag)) {
2600  ret = ff_generate_avci_extradata(st);
2601  if (ret < 0)
2602  return ret;
2603  }
2604 
2605  switch (st->codec->codec_id) {
2606 #if CONFIG_H261_DECODER
2607  case AV_CODEC_ID_H261:
2608 #endif
2609 #if CONFIG_H263_DECODER
2610  case AV_CODEC_ID_H263:
2611 #endif
2612 #if CONFIG_MPEG4_DECODER
2613  case AV_CODEC_ID_MPEG4:
2614 #endif
2615  st->codec->width = 0; /* let decoder init width/height */
2616  st->codec->height= 0;
2617  break;
2618  }
2619 
2620  /* Do not need those anymore. */
2621  av_freep(&sc->chunk_offsets);
2622  av_freep(&sc->stsc_data);
2623  av_freep(&sc->sample_sizes);
2624  av_freep(&sc->keyframes);
2625  av_freep(&sc->stts_data);
2626  av_freep(&sc->stps_data);
2627  av_freep(&sc->rap_group);
2628 
2629  return 0;
2630 }
2631 
2633 {
2634  int ret;
2635  c->itunes_metadata = 1;
2636  ret = mov_read_default(c, pb, atom);
2637  c->itunes_metadata = 0;
2638  return ret;
2639 }
2640 
2642 {
2643  int64_t end = avio_tell(pb) + size;
2644  uint8_t *key = NULL, *val = NULL;
2645  int i;
2646  AVStream *st;
2647  MOVStreamContext *sc;
2648 
2649  if (c->fc->nb_streams < 1)
2650  return 0;
2651  st = c->fc->streams[c->fc->nb_streams-1];
2652  sc = st->priv_data;
2653 
2654  for (i = 0; i < 2; i++) {
2655  uint8_t **p;
2656  uint32_t len, tag;
2657 
2658  if (end - avio_tell(pb) <= 12)
2659  break;
2660 
2661  len = avio_rb32(pb);
2662  tag = avio_rl32(pb);
2663  avio_skip(pb, 4); // flags
2664 
2665  if (len < 12 || len - 12 > end - avio_tell(pb))
2666  break;
2667  len -= 12;
2668 
2669  if (tag == MKTAG('n', 'a', 'm', 'e'))
2670  p = &key;
2671  else if (tag == MKTAG('d', 'a', 't', 'a') && len > 4) {
2672  avio_skip(pb, 4);
2673  len -= 4;
2674  p = &val;
2675  } else
2676  break;
2677 
2678  *p = av_malloc(len + 1);
2679  if (!*p)
2680  break;
2681  avio_read(pb, *p, len);
2682  (*p)[len] = 0;
2683  }
2684 
2685  if (key && val) {
2686  if (strcmp(key, "iTunSMPB") == 0) {
2687  int priming, remainder, samples;
2688  if(sscanf(val, "%*X %X %X %X", &priming, &remainder, &samples) == 3){
2689  if(priming>0 && priming<16384)
2690  sc->start_pad = priming;
2691  }
2692  }
2693  if (strcmp(key, "cdec") != 0) {
2694  av_dict_set(&c->fc->metadata, key, val,
2696  key = val = NULL;
2697  }
2698  }
2699 
2700  avio_seek(pb, end, SEEK_SET);
2701  av_freep(&key);
2702  av_freep(&val);
2703  return 0;
2704 }
2705 
2707 {
2708  int64_t end = avio_tell(pb) + atom.size;
2709  uint32_t tag, len;
2710 
2711  if (atom.size < 8)
2712  goto fail;
2713 
2714  len = avio_rb32(pb);
2715  tag = avio_rl32(pb);
2716 
2717  if (len > atom.size)
2718  goto fail;
2719 
2720  if (tag == MKTAG('m', 'e', 'a', 'n') && len > 12) {
2721  uint8_t domain[128];
2722  int domain_len;
2723 
2724  avio_skip(pb, 4); // flags
2725  len -= 12;
2726 
2727  domain_len = avio_get_str(pb, len, domain, sizeof(domain));
2728  avio_skip(pb, len - domain_len);
2729  return mov_read_custom_2plus(c, pb, end - avio_tell(pb));
2730  }
2731 
2732 fail:
2733  av_log(c->fc, AV_LOG_VERBOSE,
2734  "Unhandled or malformed custom metadata of size %"PRId64"\n", atom.size);
2735  return 0;
2736 }
2737 
2739 {
2740  while (atom.size > 8) {
2741  uint32_t tag = avio_rl32(pb);
2742  atom.size -= 4;
2743  if (tag == MKTAG('h','d','l','r')) {
2744  avio_seek(pb, -8, SEEK_CUR);
2745  atom.size += 8;
2746  return mov_read_default(c, pb, atom);
2747  }
2748  }
2749  return 0;
2750 }
2751 
2753 {
2754  int i;
2755  int width;
2756  int height;
2757  int64_t disp_transform[2];
2758  int display_matrix[3][3];
2759  AVStream *st;
2760  MOVStreamContext *sc;
2761  int version;
2762  int flags;
2763 
2764  if (c->fc->nb_streams < 1)
2765  return 0;
2766  st = c->fc->streams[c->fc->nb_streams-1];
2767  sc = st->priv_data;
2768 
2769  version = avio_r8(pb);
2770  flags = avio_rb24(pb);
2772 
2773  if (version == 1) {
2774  avio_rb64(pb);
2775  avio_rb64(pb);
2776  } else {
2777  avio_rb32(pb); /* creation time */
2778  avio_rb32(pb); /* modification time */
2779  }
2780  st->id = (int)avio_rb32(pb); /* track id (NOT 0 !)*/
2781  avio_rb32(pb); /* reserved */
2782 
2783  /* highlevel (considering edits) duration in movie timebase */
2784  (version == 1) ? avio_rb64(pb) : avio_rb32(pb);
2785  avio_rb32(pb); /* reserved */
2786  avio_rb32(pb); /* reserved */
2787 
2788  avio_rb16(pb); /* layer */
2789  avio_rb16(pb); /* alternate group */
2790  avio_rb16(pb); /* volume */
2791  avio_rb16(pb); /* reserved */
2792 
2793  //read in the display matrix (outlined in ISO 14496-12, Section 6.2.2)
2794  // they're kept in fixed point format through all calculations
2795  // save u,v,z to store the whole matrix in the AV_PKT_DATA_DISPLAYMATRIX
2796  // side data, but the scale factor is not needed to calculate aspect ratio
2797  for (i = 0; i < 3; i++) {
2798  display_matrix[i][0] = avio_rb32(pb); // 16.16 fixed point
2799  display_matrix[i][1] = avio_rb32(pb); // 16.16 fixed point
2800  display_matrix[i][2] = avio_rb32(pb); // 2.30 fixed point
2801  }
2802 
2803  width = avio_rb32(pb); // 16.16 fixed point track width
2804  height = avio_rb32(pb); // 16.16 fixed point track height
2805  sc->width = width >> 16;
2806  sc->height = height >> 16;
2807 
2808  // save the matrix and add rotate metadata when it is not the default
2809  // identity
2810  if (display_matrix[0][0] != (1 << 16) ||
2811  display_matrix[1][1] != (1 << 16) ||
2812  display_matrix[2][2] != (1 << 30) ||
2813  display_matrix[0][1] || display_matrix[0][2] ||
2814  display_matrix[1][0] || display_matrix[1][2] ||
2815  display_matrix[2][0] || display_matrix[2][1]) {
2816  int i, j;
2817  double rotate;
2818 
2819  av_freep(&sc->display_matrix);
2820  sc->display_matrix = av_malloc(sizeof(int32_t) * 9);
2821  if (!sc->display_matrix)
2822  return AVERROR(ENOMEM);
2823 
2824  for (i = 0; i < 3; i++)
2825  for (j = 0; j < 3; j++)
2826  sc->display_matrix[i * 3 + j] = display_matrix[j][i];
2827 
2829  if (!isnan(rotate)) {
2830  char rotate_buf[64];
2831  rotate = -rotate;
2832  if (rotate < 0) // for backward compatibility
2833  rotate += 360;
2834  snprintf(rotate_buf, sizeof(rotate_buf), "%g", rotate);
2835  av_dict_set(&st->metadata, "rotate", rotate_buf, 0);
2836  }
2837  }
2838 
2839  // transform the display width/height according to the matrix
2840  // skip this if the display matrix is the default identity matrix
2841  // or if it is rotating the picture, ex iPhone 3GS
2842  // to keep the same scale, use [width height 1<<16]
2843  if (width && height &&
2844  ((display_matrix[0][0] != 65536 ||
2845  display_matrix[1][1] != 65536) &&
2846  !display_matrix[0][1] &&
2847  !display_matrix[1][0] &&
2848  !display_matrix[2][0] && !display_matrix[2][1])) {
2849  for (i = 0; i < 2; i++)
2850  disp_transform[i] =
2851  (int64_t) width * display_matrix[0][i] +
2852  (int64_t) height * display_matrix[1][i] +
2853  ((int64_t) display_matrix[2][i] << 16);
2854 
2855  //sample aspect ratio is new width/height divided by old width/height
2857  ((double) disp_transform[0] * height) /
2858  ((double) disp_transform[1] * width), INT_MAX);
2859  }
2860  return 0;
2861 }
2862 
2864 {
2865  MOVFragment *frag = &c->fragment;
2866  MOVTrackExt *trex = NULL;
2867  MOVFragmentIndex* index = NULL;
2868  int flags, track_id, i;
2869 
2870  avio_r8(pb); /* version */
2871  flags = avio_rb24(pb);
2872 
2873  track_id = avio_rb32(pb);
2874  if (!track_id)
2875  return AVERROR_INVALIDDATA;
2876  frag->track_id = track_id;
2877  for (i = 0; i < c->trex_count; i++)
2878  if (c->trex_data[i].track_id == frag->track_id) {
2879  trex = &c->trex_data[i];
2880  break;
2881  }
2882  if (!trex) {
2883  av_log(c->fc, AV_LOG_ERROR, "could not find corresponding trex\n");
2884  return AVERROR_INVALIDDATA;
2885  }
2886  for (i = 0; i < c->fragment_index_count; i++) {
2887  MOVFragmentIndex* candidate = c->fragment_index_data[i];
2888  if (candidate->track_id == frag->track_id) {
2889  av_log(c->fc, AV_LOG_DEBUG,
2890  "found fragment index for track %u\n", frag->track_id);
2891  index = candidate;
2892  break;
2893  }
2894  }
2895 
2898  frag->moof_offset : frag->implicit_offset;
2899  frag->stsd_id = flags & MOV_TFHD_STSD_ID ? avio_rb32(pb) : trex->stsd_id;
2900 
2901  frag->duration = flags & MOV_TFHD_DEFAULT_DURATION ?
2902  avio_rb32(pb) : trex->duration;
2903  frag->size = flags & MOV_TFHD_DEFAULT_SIZE ?
2904  avio_rb32(pb) : trex->size;
2905  frag->flags = flags & MOV_TFHD_DEFAULT_FLAGS ?
2906  avio_rb32(pb) : trex->flags;
2907  frag->time = AV_NOPTS_VALUE;
2908  if (index) {
2909  int i, found = 0;
2910  for (i = index->current_item; i < index->item_count; i++) {
2911  if (frag->implicit_offset == index->items[i].moof_offset) {
2912  av_log(c->fc, AV_LOG_DEBUG, "found fragment index entry "
2913  "for track %u and moof_offset %"PRId64"\n",
2914  frag->track_id, index->items[i].moof_offset);
2915  frag->time = index->items[i].time;
2916  index->current_item = i + 1;
2917  found = 1;
2918  }
2919  }
2920  if (!found) {
2921  av_log(c->fc, AV_LOG_WARNING, "track %u has a fragment index "
2922  "but it doesn't have an (in-order) entry for moof_offset "
2923  "%"PRId64"\n", frag->track_id, frag->implicit_offset);
2924  }
2925  }
2926  av_dlog(c->fc, "frag flags 0x%x\n", frag->flags);
2927  return 0;
2928 }
2929 
2931 {
2932  c->chapter_track = avio_rb32(pb);
2933  return 0;
2934 }
2935 
2937 {
2938  MOVTrackExt *trex;
2939  int err;
2940 
2941  if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data))
2942  return AVERROR_INVALIDDATA;
2943  if ((err = av_reallocp_array(&c->trex_data, c->trex_count + 1,
2944  sizeof(*c->trex_data))) < 0) {
2945  c->trex_count = 0;
2946  return err;
2947  }
2948 
2949  c->fc->duration = AV_NOPTS_VALUE; // the duration from mvhd is not representing the whole file when fragments are used.
2950 
2951  trex = &c->trex_data[c->trex_count++];
2952  avio_r8(pb); /* version */
2953  avio_rb24(pb); /* flags */
2954  trex->track_id = avio_rb32(pb);
2955  trex->stsd_id = avio_rb32(pb);
2956  trex->duration = avio_rb32(pb);
2957  trex->size = avio_rb32(pb);
2958  trex->flags = avio_rb32(pb);
2959  return 0;
2960 }
2961 
2963 {
2964  MOVFragment *frag = &c->fragment;
2965  AVStream *st = NULL;
2966  MOVStreamContext *sc;
2967  int version, i;
2968 
2969  for (i = 0; i < c->fc->nb_streams; i++) {
2970  if (c->fc->streams[i]->id == frag->track_id) {
2971  st = c->fc->streams[i];
2972  break;
2973  }
2974  }
2975  if (!st) {
2976  av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id);
2977  return AVERROR_INVALIDDATA;
2978  }
2979  sc = st->priv_data;
2980  if (sc->pseudo_stream_id + 1 != frag->stsd_id)
2981  return 0;
2982  version = avio_r8(pb);
2983  avio_rb24(pb); /* flags */
2984  if (version) {
2985  sc->track_end = avio_rb64(pb);
2986  } else {
2987  sc->track_end = avio_rb32(pb);
2988  }
2989  return 0;
2990 }
2991 
2993 {
2994  MOVFragment *frag = &c->fragment;
2995  AVStream *st = NULL;
2996  MOVStreamContext *sc;
2997  MOVStts *ctts_data;
2998  uint64_t offset;
2999  int64_t dts;
3000  int data_offset = 0;
3001  unsigned entries, first_sample_flags = frag->flags;
3002  int flags, distance, i, found_keyframe = 0, err;
3003 
3004  for (i = 0; i < c->fc->nb_streams; i++) {
3005  if (c->fc->streams[i]->id == frag->track_id) {
3006  st = c->fc->streams[i];
3007  break;
3008  }
3009  }
3010  if (!st) {
3011  av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id);
3012  return AVERROR_INVALIDDATA;
3013  }
3014  sc = st->priv_data;
3015  if (sc->pseudo_stream_id+1 != frag->stsd_id && sc->pseudo_stream_id != -1)
3016  return 0;
3017  avio_r8(pb); /* version */
3018  flags = avio_rb24(pb);
3019  entries = avio_rb32(pb);
3020  av_dlog(c->fc, "flags 0x%x entries %d\n", flags, entries);
3021 
3022  /* Always assume the presence of composition time offsets.
3023  * Without this assumption, for instance, we cannot deal with a track in fragmented movies that meet the following.
3024  * 1) in the initial movie, there are no samples.
3025  * 2) in the first movie fragment, there is only one sample without composition time offset.
3026  * 3) in the subsequent movie fragments, there are samples with composition time offset. */
3027  if (!sc->ctts_count && sc->sample_count)
3028  {
3029  /* Complement ctts table if moov atom doesn't have ctts atom. */
3030  ctts_data = av_realloc(NULL, sizeof(*sc->ctts_data));
3031  if (!ctts_data)
3032  return AVERROR(ENOMEM);
3033  sc->ctts_data = ctts_data;
3034  sc->ctts_data[sc->ctts_count].count = sc->sample_count;
3035  sc->ctts_data[sc->ctts_count].duration = 0;
3036  sc->ctts_count++;
3037  }
3038  if ((uint64_t)entries+sc->ctts_count >= UINT_MAX/sizeof(*sc->ctts_data))
3039  return AVERROR_INVALIDDATA;
3040  if ((err = av_reallocp_array(&sc->ctts_data, entries + sc->ctts_count,
3041  sizeof(*sc->ctts_data))) < 0) {
3042  sc->ctts_count = 0;
3043  return err;
3044  }
3045  if (flags & MOV_TRUN_DATA_OFFSET) data_offset = avio_rb32(pb);
3046  if (flags & MOV_TRUN_FIRST_SAMPLE_FLAGS) first_sample_flags = avio_rb32(pb);
3047  dts = sc->track_end - sc->time_offset;
3048  offset = frag->base_data_offset + data_offset;
3049  distance = 0;
3050  av_dlog(c->fc, "first sample flags 0x%x\n", first_sample_flags);
3051  for (i = 0; i < entries && !pb->eof_reached; i++) {
3052  unsigned sample_size = frag->size;
3053  int sample_flags = i ? frag->flags : first_sample_flags;
3054  unsigned sample_duration = frag->duration;
3055  int keyframe = 0;
3056 
3057  if (flags & MOV_TRUN_SAMPLE_DURATION) sample_duration = avio_rb32(pb);
3058  if (flags & MOV_TRUN_SAMPLE_SIZE) sample_size = avio_rb32(pb);
3059  if (flags & MOV_TRUN_SAMPLE_FLAGS) sample_flags = avio_rb32(pb);
3060  sc->ctts_data[sc->ctts_count].count = 1;
3061  sc->ctts_data[sc->ctts_count].duration = (flags & MOV_TRUN_SAMPLE_CTS) ?
3062  avio_rb32(pb) : 0;
3064  if (frag->time != AV_NOPTS_VALUE) {
3065  if (c->use_mfra_for == FF_MOV_FLAG_MFRA_PTS) {
3066  int64_t pts = frag->time;
3067  av_log(c->fc, AV_LOG_DEBUG, "found frag time %"PRId64
3068  " sc->dts_shift %d ctts.duration %d"
3069  " sc->time_offset %"PRId64" flags & MOV_TRUN_SAMPLE_CTS %d\n", pts,
3070  sc->dts_shift, sc->ctts_data[sc->ctts_count].duration,
3071  sc->time_offset, flags & MOV_TRUN_SAMPLE_CTS);
3072  dts = pts - sc->dts_shift;
3073  if (flags & MOV_TRUN_SAMPLE_CTS) {
3074  dts -= sc->ctts_data[sc->ctts_count].duration;
3075  } else {
3076  dts -= sc->time_offset;
3077  }
3078  av_log(c->fc, AV_LOG_DEBUG, "calculated into dts %"PRId64"\n", dts);
3079  } else {
3080  dts = frag->time;
3081  av_log(c->fc, AV_LOG_DEBUG, "found frag time %"PRId64
3082  ", using it for dts\n", dts);
3083  }
3084  frag->time = AV_NOPTS_VALUE;
3085  }
3086  sc->ctts_count++;
3087  if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
3088  keyframe = 1;
3089  else if (!found_keyframe)
3090  keyframe = found_keyframe =
3091  !(sample_flags & (MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC |
3093  if (keyframe)
3094  distance = 0;
3095  av_add_index_entry(st, offset, dts, sample_size, distance,
3096  keyframe ? AVINDEX_KEYFRAME : 0);
3097  av_dlog(c->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
3098  "size %d, distance %d, keyframe %d\n", st->index, sc->sample_count+i,
3099  offset, dts, sample_size, distance, keyframe);
3100  distance++;
3101  dts += sample_duration;
3102  offset += sample_size;
3103  sc->data_size += sample_size;
3104  sc->duration_for_fps += sample_duration;
3105  sc->nb_frames_for_fps ++;
3106  }
3107 
3108  if (pb->eof_reached)
3109  return AVERROR_EOF;
3110 
3111  frag->implicit_offset = offset;
3112  st->duration = sc->track_end = dts + sc->time_offset;
3113  return 0;
3114 }
3115 
3116 /* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
3117 /* like the files created with Adobe Premiere 5.0, for samples see */
3118 /* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
3120 {
3121  int err;
3122 
3123  if (atom.size < 8)
3124  return 0; /* continue */
3125  if (avio_rb32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
3126  avio_skip(pb, atom.size - 4);
3127  return 0;
3128  }
3129  atom.type = avio_rl32(pb);
3130  atom.size -= 8;
3131  if (atom.type != MKTAG('m','d','a','t')) {
3132  avio_skip(pb, atom.size);
3133  return 0;
3134  }
3135  err = mov_read_mdat(c, pb, atom);
3136  return err;
3137 }
3138 
3140 {
3141 #if CONFIG_ZLIB
3142  AVIOContext ctx;
3143  uint8_t *cmov_data;
3144  uint8_t *moov_data; /* uncompressed data */
3145  long cmov_len, moov_len;
3146  int ret = -1;
3147 
3148  avio_rb32(pb); /* dcom atom */
3149  if (avio_rl32(pb) != MKTAG('d','c','o','m'))
3150  return AVERROR_INVALIDDATA;
3151  if (avio_rl32(pb) != MKTAG('z','l','i','b')) {
3152  av_log(c->fc, AV_LOG_ERROR, "unknown compression for cmov atom !\n");
3153  return AVERROR_INVALIDDATA;
3154  }
3155  avio_rb32(pb); /* cmvd atom */
3156  if (avio_rl32(pb) != MKTAG('c','m','v','d'))
3157  return AVERROR_INVALIDDATA;
3158  moov_len = avio_rb32(pb); /* uncompressed size */
3159  cmov_len = atom.size - 6 * 4;
3160 
3161  cmov_data = av_malloc(cmov_len);
3162  if (!cmov_data)
3163  return AVERROR(ENOMEM);
3164  moov_data = av_malloc(moov_len);
3165  if (!moov_data) {
3166  av_free(cmov_data);
3167  return AVERROR(ENOMEM);
3168  }
3169  avio_read(pb, cmov_data, cmov_len);
3170  if (uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
3171  goto free_and_return;
3172  if (ffio_init_context(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
3173  goto free_and_return;
3174  atom.type = MKTAG('m','o','o','v');
3175  atom.size = moov_len;
3176  ret = mov_read_default(c, &ctx, atom);
3177 free_and_return:
3178  av_free(moov_data);
3179  av_free(cmov_data);
3180  return ret;
3181 #else
3182  av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
3183  return AVERROR(ENOSYS);
3184 #endif
3185 }
3186 
3187 /* edit list atom */
3189 {
3190  MOVStreamContext *sc;
3191  int i, edit_count, version, edit_start_index = 0;
3192  int unsupported = 0;
3193 
3194  if (c->fc->nb_streams < 1 || c->ignore_editlist)
3195  return 0;
3196  sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
3197 
3198  version = avio_r8(pb); /* version */
3199  avio_rb24(pb); /* flags */
3200  edit_count = avio_rb32(pb); /* entries */
3201 
3202  if ((uint64_t)edit_count*12+8 > atom.size)
3203  return AVERROR_INVALIDDATA;
3204 
3205  av_dlog(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, edit_count);
3206  for (i=0; i<edit_count; i++){
3207  int64_t time;
3208  int64_t duration;
3209  int rate;
3210  if (version == 1) {
3211  duration = avio_rb64(pb);
3212  time = avio_rb64(pb);
3213  } else {
3214  duration = avio_rb32(pb); /* segment duration */
3215  time = (int32_t)avio_rb32(pb); /* media time */
3216  }
3217  rate = avio_rb32(pb);
3218  if (i == 0 && time == -1) {
3219  sc->empty_duration = duration;
3220  edit_start_index = 1;
3221  } else if (i == edit_start_index && time >= 0)
3222  sc->start_time = time;
3223  else
3224  unsupported = 1;
3225 
3226  av_dlog(c->fc, "duration=%"PRId64" time=%"PRId64" rate=%f\n",
3227  duration, time, rate / 65536.0);
3228  }
3229 
3230  if (unsupported)
3231  av_log(c->fc, AV_LOG_WARNING, "multiple edit list entries, "
3232  "a/v desync might occur, patch welcome\n");
3233 
3234  return 0;
3235 }
3236 
3238 {
3239  MOVStreamContext *sc;
3240 
3241  if (c->fc->nb_streams < 1)
3242  return AVERROR_INVALIDDATA;
3243  sc = c->fc->streams[c->fc->nb_streams - 1]->priv_data;
3244  sc->timecode_track = avio_rb32(pb);
3245  return 0;
3246 }
3247 
3249 {
3250  int ret;
3251  uint8_t uuid[16];
3252  static const uint8_t uuid_isml_manifest[] = {
3253  0xa5, 0xd4, 0x0b, 0x30, 0xe8, 0x14, 0x11, 0xdd,
3254  0xba, 0x2f, 0x08, 0x00, 0x20, 0x0c, 0x9a, 0x66
3255  };
3256 
3257  if (atom.size < sizeof(uuid) || atom.size == INT64_MAX)
3258  return AVERROR_INVALIDDATA;
3259 
3260  ret = avio_read(pb, uuid, sizeof(uuid));
3261  if (ret < 0) {
3262  return ret;
3263  } else if (ret != sizeof(uuid)) {
3264  return AVERROR_INVALIDDATA;
3265  }
3266  if (!memcmp(uuid, uuid_isml_manifest, sizeof(uuid))) {
3267  uint8_t *buffer, *ptr;
3268  char *endptr;
3269  size_t len = atom.size - sizeof(uuid);
3270 
3271  if (len < 4) {
3272  return AVERROR_INVALIDDATA;
3273  }
3274  ret = avio_skip(pb, 4); // zeroes
3275  len -= 4;
3276 
3277  buffer = av_mallocz(len + 1);
3278  if (!buffer) {
3279  return AVERROR(ENOMEM);
3280  }
3281  ret = avio_read(pb, buffer, len);
3282  if (ret < 0) {
3283  av_free(buffer);
3284  return ret;
3285  } else if (ret != len) {
3286  av_free(buffer);
3287  return AVERROR_INVALIDDATA;
3288  }
3289 
3290  ptr = buffer;
3291  while ((ptr = av_stristr(ptr, "systemBitrate=\""))) {
3292  ptr += sizeof("systemBitrate=\"") - 1;
3293  c->bitrates_count++;
3294  c->bitrates = av_realloc_f(c->bitrates, c->bitrates_count, sizeof(*c->bitrates));
3295  if (!c->bitrates) {
3296  c->bitrates_count = 0;
3297  av_free(buffer);
3298  return AVERROR(ENOMEM);
3299  }
3300  errno = 0;
3301  ret = strtol(ptr, &endptr, 10);
3302  if (ret < 0 || errno || *endptr != '"') {
3303  c->bitrates[c->bitrates_count - 1] = 0;
3304  } else {
3305  c->bitrates[c->bitrates_count - 1] = ret;
3306  }
3307  }
3308 
3309  av_free(buffer);
3310  }
3311  return 0;
3312 }
3313 
3315 {
3316  int ret;
3317  uint8_t content[16];
3318 
3319  if (atom.size < 8)
3320  return 0;
3321 
3322  ret = avio_read(pb, content, FFMIN(sizeof(content), atom.size));
3323  if (ret < 0)
3324  return ret;
3325 
3326  if ( !c->found_moov
3327  && !c->found_mdat
3328  && !memcmp(content, "Anevia\x1A\x1A", 8)
3331  }
3332 
3333  return 0;
3334 }
3335 
3337 { MKTAG('A','C','L','R'), mov_read_avid },
3338 { MKTAG('A','P','R','G'), mov_read_avid },
3339 { MKTAG('A','A','L','P'), mov_read_avid },
3340 { MKTAG('A','R','E','S'), mov_read_ares },
3341 { MKTAG('a','v','s','s'), mov_read_avss },
3342 { MKTAG('c','h','p','l'), mov_read_chpl },
3343 { MKTAG('c','o','6','4'), mov_read_stco },
3344 { MKTAG('c','o','l','r'), mov_read_colr },
3345 { MKTAG('c','t','t','s'), mov_read_ctts }, /* composition time to sample */
3346 { MKTAG('d','i','n','f'), mov_read_default },
3347 { MKTAG('d','r','e','f'), mov_read_dref },
3348 { MKTAG('e','d','t','s'), mov_read_default },
3349 { MKTAG('e','l','s','t'), mov_read_elst },
3350 { MKTAG('e','n','d','a'), mov_read_enda },
3351 { MKTAG('f','i','e','l'), mov_read_fiel },
3352 { MKTAG('f','t','y','p'), mov_read_ftyp },
3353 { MKTAG('g','l','b','l'), mov_read_glbl },
3354 { MKTAG('h','d','l','r'), mov_read_hdlr },
3355 { MKTAG('i','l','s','t'), mov_read_ilst },
3356 { MKTAG('j','p','2','h'), mov_read_jp2h },
3357 { MKTAG('m','d','a','t'), mov_read_mdat },
3358 { MKTAG('m','d','h','d'), mov_read_mdhd },
3359 { MKTAG('m','d','i','a'), mov_read_default },
3360 { MKTAG('m','e','t','a'), mov_read_meta },
3361 { MKTAG('m','i','n','f'), mov_read_default },
3362 { MKTAG('m','o','o','f'), mov_read_moof },
3363 { MKTAG('m','o','o','v'), mov_read_moov },
3364 { MKTAG('m','v','e','x'), mov_read_default },
3365 { MKTAG('m','v','h','d'), mov_read_mvhd },
3366 { MKTAG('S','M','I',' '), mov_read_svq3 },
3367 { MKTAG('a','l','a','c'), mov_read_alac }, /* alac specific atom */
3368 { MKTAG('a','v','c','C'), mov_read_glbl },
3369 { MKTAG('p','a','s','p'), mov_read_pasp },
3370 { MKTAG('s','t','b','l'), mov_read_default },
3371 { MKTAG('s','t','c','o'), mov_read_stco },
3372 { MKTAG('s','t','p','s'), mov_read_stps },
3373 { MKTAG('s','t','r','f'), mov_read_strf },
3374 { MKTAG('s','t','s','c'), mov_read_stsc },
3375 { MKTAG('s','t','s','d'), mov_read_stsd }, /* sample description */
3376 { MKTAG('s','t','s','s'), mov_read_stss }, /* sync sample */
3377 { MKTAG('s','t','s','z'), mov_read_stsz }, /* sample size */
3378 { MKTAG('s','t','t','s'), mov_read_stts },
3379 { MKTAG('s','t','z','2'), mov_read_stsz }, /* compact sample size */
3380 { MKTAG('t','k','h','d'), mov_read_tkhd }, /* track header */
3381 { MKTAG('t','f','d','t'), mov_read_tfdt },
3382 { MKTAG('t','f','h','d'), mov_read_tfhd }, /* track fragment header */
3383 { MKTAG('t','r','a','k'), mov_read_trak },
3384 { MKTAG('t','r','a','f'), mov_read_default },
3385 { MKTAG('t','r','e','f'), mov_read_default },
3386 { MKTAG('t','m','c','d'), mov_read_tmcd },
3387 { MKTAG('c','h','a','p'), mov_read_chap },
3388 { MKTAG('t','r','e','x'), mov_read_trex },
3389 { MKTAG('t','r','u','n'), mov_read_trun },
3390 { MKTAG('u','d','t','a'), mov_read_default },
3391 { MKTAG('w','a','v','e'), mov_read_wave },
3392 { MKTAG('e','s','d','s'), mov_read_esds },
3393 { MKTAG('d','a','c','3'), mov_read_dac3 }, /* AC-3 info */
3394 { MKTAG('d','e','c','3'), mov_read_dec3 }, /* EAC-3 info */
3395 { MKTAG('w','i','d','e'), mov_read_wide }, /* place holder */
3396 { MKTAG('w','f','e','x'), mov_read_wfex },
3397 { MKTAG('c','m','o','v'), mov_read_cmov },
3398 { MKTAG('c','h','a','n'), mov_read_chan }, /* channel layout */
3399 { MKTAG('d','v','c','1'), mov_read_dvc1 },
3400 { MKTAG('s','b','g','p'), mov_read_sbgp },
3401 { MKTAG('h','v','c','C'), mov_read_glbl },
3402 { MKTAG('u','u','i','d'), mov_read_uuid },
3403 { MKTAG('C','i','n', 0x8e), mov_read_targa_y216 },
3404 { MKTAG('f','r','e','e'), mov_read_free },
3405 { MKTAG('-','-','-','-'), mov_read_custom },
3406 { 0, NULL }
3407 };
3408 
3410 {
3411  int64_t total_size = 0;
3412  MOVAtom a;
3413  int i;
3414 
3415  if (c->atom_depth > 10) {
3416  av_log(c->fc, AV_LOG_ERROR, "Atoms too deeply nested\n");
3417  return AVERROR_INVALIDDATA;
3418  }
3419  c->atom_depth ++;
3420 
3421  if (atom.size < 0)
3422  atom.size = INT64_MAX;
3423  while (total_size + 8 <= atom.size && !avio_feof(pb)) {
3424  int (*parse)(MOVContext*, AVIOContext*, MOVAtom) = NULL;
3425  a.size = atom.size;
3426  a.type=0;
3427  if (atom.size >= 8) {
3428  a.size = avio_rb32(pb);
3429  a.type = avio_rl32(pb);
3430  if (a.type == MKTAG('f','r','e','e') &&
3431  a.size >= 8 &&
3432  c->moov_retry) {
3433  uint8_t buf[8];
3434  uint32_t *type = (uint32_t *)buf + 1;
3435  avio_read(pb, buf, 8);
3436  avio_seek(pb, -8, SEEK_CUR);
3437  if (*type == MKTAG('m','v','h','d') ||
3438  *type == MKTAG('c','m','o','v')) {
3439  av_log(c->fc, AV_LOG_ERROR, "Detected moov in a free atom.\n");
3440  a.type = MKTAG('m','o','o','v');
3441  }
3442  }
3443  if (atom.type != MKTAG('r','o','o','t') &&
3444  atom.type != MKTAG('m','o','o','v'))
3445  {
3446  if (a.type == MKTAG('t','r','a','k') || a.type == MKTAG('m','d','a','t'))
3447  {
3448  av_log(c->fc, AV_LOG_ERROR, "Broken file, trak/mdat not at top-level\n");
3449  avio_skip(pb, -8);
3450  c->atom_depth --;
3451  return 0;
3452  }
3453  }
3454  total_size += 8;
3455  if (a.size == 1) { /* 64 bit extended size */
3456  a.size = avio_rb64(pb) - 8;
3457  total_size += 8;
3458  }
3459  }
3460  av_dlog(c->fc, "type: %08x '%.4s' parent:'%.4s' sz: %"PRId64" %"PRId64" %"PRId64"\n",
3461  a.type, (char*)&a.type, (char*)&atom.type, a.size, total_size, atom.size);
3462  if (a.size == 0) {
3463  a.size = atom.size - total_size + 8;
3464  }
3465  a.size -= 8;
3466  if (a.size < 0)
3467  break;
3468  a.size = FFMIN(a.size, atom.size - total_size);
3469 
3470  for (i = 0; mov_default_parse_table[i].type; i++)
3471  if (mov_default_parse_table[i].type == a.type) {
3472  parse = mov_default_parse_table[i].parse;
3473  break;
3474  }
3475 
3476  // container is user data
3477  if (!parse && (atom.type == MKTAG('u','d','t','a') ||
3478  atom.type == MKTAG('i','l','s','t')))
3480 
3481  if (!parse) { /* skip leaf atoms data */
3482  avio_skip(pb, a.size);
3483  } else {
3484  int64_t start_pos = avio_tell(pb);
3485  int64_t left;
3486  int err = parse(c, pb, a);
3487  if (err < 0) {
3488  c->atom_depth --;
3489  return err;
3490  }
3491  if (c->found_moov && c->found_mdat &&
3492  ((!pb->seekable || c->fc->flags & AVFMT_FLAG_IGNIDX) ||
3493  start_pos + a.size == avio_size(pb))) {
3494  if (!pb->seekable || c->fc->flags & AVFMT_FLAG_IGNIDX)
3495  c->next_root_atom = start_pos + a.size;
3496  c->atom_depth --;
3497  return 0;
3498  }
3499  left = a.size - avio_tell(pb) + start_pos;
3500  if (left > 0) /* skip garbage at atom end */
3501  avio_skip(pb, left);
3502  else if (left < 0) {
3503  av_log(c->fc, AV_LOG_WARNING,
3504  "overread end of atom '%.4s' by %"PRId64" bytes\n",
3505  (char*)&a.type, -left);
3506  avio_seek(pb, left, SEEK_CUR);
3507  }
3508  }
3509 
3510  total_size += a.size;
3511  }
3512 
3513  if (total_size < atom.size && atom.size < 0x7ffff)
3514  avio_skip(pb, atom.size - total_size);
3515 
3516  c->atom_depth --;
3517  return 0;
3518 }
3519 
3520 static int mov_probe(AVProbeData *p)
3521 {
3522  int64_t offset;
3523  uint32_t tag;
3524  int score = 0;
3525  int moov_offset = -1;
3526 
3527  /* check file header */
3528  offset = 0;
3529  for (;;) {
3530  /* ignore invalid offset */
3531  if ((offset + 8) > (unsigned int)p->buf_size)
3532  break;
3533  tag = AV_RL32(p->buf + offset + 4);
3534  switch(tag) {
3535  /* check for obvious tags */
3536  case MKTAG('m','o','o','v'):
3537  moov_offset = offset + 4;
3538  case MKTAG('m','d','a','t'):
3539  case MKTAG('p','n','o','t'): /* detect movs with preview pics like ew.mov and april.mov */
3540  case MKTAG('u','d','t','a'): /* Packet Video PVAuthor adds this and a lot of more junk */
3541  case MKTAG('f','t','y','p'):
3542  if (AV_RB32(p->buf+offset) < 8 &&
3543  (AV_RB32(p->buf+offset) != 1 ||
3544  offset + 12 > (unsigned int)p->buf_size ||
3545  AV_RB64(p->buf+offset + 8) == 0)) {
3546  score = FFMAX(score, AVPROBE_SCORE_EXTENSION);
3547  } else if (tag == MKTAG('f','t','y','p') &&
3548  AV_RL32(p->buf + offset + 8) == MKTAG('j','p','2',' ')) {
3549  score = FFMAX(score, 5);
3550  } else {
3551  score = AVPROBE_SCORE_MAX;
3552  }
3553  offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset;
3554  break;
3555  /* those are more common words, so rate then a bit less */
3556  case MKTAG('e','d','i','w'): /* xdcam files have reverted first tags */
3557  case MKTAG('w','i','d','e'):
3558  case MKTAG('f','r','e','e'):
3559  case MKTAG('j','u','n','k'):
3560  case MKTAG('p','i','c','t'):
3561  score = FFMAX(score, AVPROBE_SCORE_MAX - 5);
3562  offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset;
3563  break;
3564  case MKTAG(0x82,0x82,0x7f,0x7d):
3565  case MKTAG('s','k','i','p'):
3566  case MKTAG('u','u','i','d'):
3567  case MKTAG('p','r','f','l'):
3568  /* if we only find those cause probedata is too small at least rate them */
3569  score = FFMAX(score, AVPROBE_SCORE_EXTENSION);
3570  offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset;
3571  break;
3572  default:
3573  offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset;
3574  }
3575  }
3576  if(score > AVPROBE_SCORE_MAX - 50 && moov_offset != -1) {
3577  /* moov atom in the header - we should make sure that this is not a
3578  * MOV-packed MPEG-PS */
3579  offset = moov_offset;
3580 
3581  while(offset < (p->buf_size - 16)){ /* Sufficient space */
3582  /* We found an actual hdlr atom */
3583  if(AV_RL32(p->buf + offset ) == MKTAG('h','d','l','r') &&
3584  AV_RL32(p->buf + offset + 8) == MKTAG('m','h','l','r') &&
3585  AV_RL32(p->buf + offset + 12) == MKTAG('M','P','E','G')){
3586  av_log(NULL, AV_LOG_WARNING, "Found media data tag MPEG indicating this is a MOV-packed MPEG-PS.\n");
3587  /* We found a media handler reference atom describing an
3588  * MPEG-PS-in-MOV, return a
3589  * low score to force expanding the probe window until
3590  * mpegps_probe finds what it needs */
3591  return 5;
3592  }else
3593  /* Keep looking */
3594  offset+=2;
3595  }
3596  }
3597 
3598  return score;
3599 }
3600 
3601 // must be done after parsing all trak because there's no order requirement
3603 {
3604  MOVContext *mov = s->priv_data;
3605  AVStream *st = NULL;
3606  MOVStreamContext *sc;
3607  int64_t cur_pos;
3608  int i;
3609 
3610  for (i = 0; i < s->nb_streams; i++)
3611  if (s->streams[i]->id == mov->chapter_track) {
3612  st = s->streams[i];
3613  break;
3614  }
3615  if (!st) {
3616  av_log(s, AV_LOG_ERROR, "Referenced QT chapter track not found\n");
3617  return;
3618  }
3619 
3620  st->discard = AVDISCARD_ALL;
3621  sc = st->priv_data;
3622  cur_pos = avio_tell(sc->pb);
3623 
3624  for (i = 0; i < st->nb_index_entries; i++) {
3625  AVIndexEntry *sample = &st->index_entries[i];
3626  int64_t end = i+1 < st->nb_index_entries ? st->index_entries[i+1].timestamp : st->duration;
3627  uint8_t *title;
3628  uint16_t ch;
3629  int len, title_len;
3630 
3631  if (end < sample->timestamp) {
3632  av_log(s, AV_LOG_WARNING, "ignoring stream duration which is shorter than chapters\n");
3633  end = AV_NOPTS_VALUE;
3634  }
3635 
3636  if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
3637  av_log(s, AV_LOG_ERROR, "Chapter %d not found in file\n", i);
3638  goto finish;
3639  }
3640 
3641  // the first two bytes are the length of the title
3642  len = avio_rb16(sc->pb);
3643  if (len > sample->size-2)
3644  continue;
3645  title_len = 2*len + 1;
3646  if (!(title = av_mallocz(title_len)))
3647  goto finish;
3648 
3649  // The samples could theoretically be in any encoding if there's an encd
3650  // atom following, but in practice are only utf-8 or utf-16, distinguished
3651  // instead by the presence of a BOM
3652  if (!len) {
3653  title[0] = 0;
3654  } else {
3655  ch = avio_rb16(sc->pb);
3656  if (ch == 0xfeff)
3657  avio_get_str16be(sc->pb, len, title, title_len);
3658  else if (ch == 0xfffe)
3659  avio_get_str16le(sc->pb, len, title, title_len);
3660  else {
3661  AV_WB16(title, ch);
3662  if (len == 1 || len == 2)
3663  title[len] = 0;
3664  else
3665  avio_get_str(sc->pb, INT_MAX, title + 2, len - 1);
3666  }
3667  }
3668 
3669  avpriv_new_chapter(s, i, st->time_base, sample->timestamp, end, title);
3670  av_freep(&title);
3671  }
3672 finish:
3673  avio_seek(sc->pb, cur_pos, SEEK_SET);
3674 }
3675 
3677  uint32_t value, int flags)
3678 {
3679  AVTimecode tc;
3680  char buf[AV_TIMECODE_STR_SIZE];
3681  AVRational rate = {st->codec->time_base.den,
3682  st->codec->time_base.num};
3683  int ret = av_timecode_init(&tc, rate, flags, 0, s);
3684  if (ret < 0)
3685  return ret;
3686  av_dict_set(&st->metadata, "timecode",
3687  av_timecode_make_string(&tc, buf, value), 0);
3688  return 0;
3689 }
3690 
3692 {
3693  MOVStreamContext *sc = st->priv_data;
3694  int flags = 0;
3695  int64_t cur_pos = avio_tell(sc->pb);
3696  uint32_t value;
3697 
3698  if (!st->nb_index_entries)
3699  return -1;
3700 
3701  avio_seek(sc->pb, st->index_entries->pos, SEEK_SET);
3702  value = avio_rb32(s->pb);
3703 
3704  if (sc->tmcd_flags & 0x0001) flags |= AV_TIMECODE_FLAG_DROPFRAME;
3705  if (sc->tmcd_flags & 0x0002) flags |= AV_TIMECODE_FLAG_24HOURSMAX;
3706  if (sc->tmcd_flags & 0x0004) flags |= AV_TIMECODE_FLAG_ALLOWNEGATIVE;
3707 
3708  /* Assume Counter flag is set to 1 in tmcd track (even though it is likely
3709  * not the case) and thus assume "frame number format" instead of QT one.
3710  * No sample with tmcd track can be found with a QT timecode at the moment,
3711  * despite what the tmcd track "suggests" (Counter flag set to 0 means QT
3712  * format). */
3713  parse_timecode_in_framenum_format(s, st, value, flags);
3714 
3715  avio_seek(sc->pb, cur_pos, SEEK_SET);
3716  return 0;
3717 }
3718 
3720 {
3721  MOVContext *mov = s->priv_data;
3722  int i, j;
3723 
3724  for (i = 0; i < s->nb_streams; i++) {
3725  AVStream *st = s->streams[i];
3726  MOVStreamContext *sc = st->priv_data;
3727 
3728  av_freep(&sc->ctts_data);
3729  for (j = 0; j < sc->drefs_count; j++) {
3730  av_freep(&sc->drefs[j].path);
3731  av_freep(&sc->drefs[j].dir);
3732  }
3733  av_freep(&sc->drefs);
3734 
3735  sc->drefs_count = 0;
3736 
3737  if (!sc->pb_is_copied)
3738  avio_close(sc->pb);
3739 
3740  sc->pb = NULL;
3741  av_freep(&sc->chunk_offsets);
3742  av_freep(&sc->stsc_data);
3743  av_freep(&sc->sample_sizes);
3744  av_freep(&sc->keyframes);
3745  av_freep(&sc->stts_data);
3746  av_freep(&sc->stps_data);
3747  av_freep(&sc->rap_group);
3748  av_freep(&sc->display_matrix);
3749  }
3750 
3751  if (mov->dv_demux) {
3753  mov->dv_fctx = NULL;
3754  }
3755 
3756  av_freep(&mov->trex_data);
3757  av_freep(&mov->bitrates);
3758 
3759  for (i = 0; i < mov->fragment_index_count; i++) {
3761  av_freep(&index->items);
3762  av_freep(&mov->fragment_index_data[i]);
3763  }
3765 
3766  return 0;
3767 }
3768 
3769 static int tmcd_is_referenced(AVFormatContext *s, int tmcd_id)
3770 {
3771  int i;
3772 
3773  for (i = 0; i < s->nb_streams; i++) {
3774  AVStream *st = s->streams[i];
3775  MOVStreamContext *sc = st->priv_data;
3776 
3777  if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
3778  sc->timecode_track == tmcd_id)
3779  return 1;
3780  }
3781  return 0;
3782 }
3783 
3784 /* look for a tmcd track not referenced by any video track, and export it globally */
3786 {
3787  int i;
3788 
3789  for (i = 0; i < s->nb_streams; i++) {
3790  AVStream *st = s->streams[i];
3791 
3792  if (st->codec->codec_tag == MKTAG('t','m','c','d') &&
3793  !tmcd_is_referenced(s, i + 1)) {
3794  AVDictionaryEntry *tcr = av_dict_get(st->metadata, "timecode", NULL, 0);
3795  if (tcr) {
3796  av_dict_set(&s->metadata, "timecode", tcr->value, 0);
3797  break;
3798  }
3799  }
3800  }
3801 }
3802 
3803 static int read_tfra(MOVContext *mov, AVIOContext *f)
3804 {
3805  MOVFragmentIndex* index = NULL;
3806  int version, fieldlength, i, j, err;
3807  int64_t pos = avio_tell(f);
3808  uint32_t size = avio_rb32(f);
3809  if (avio_rb32(f) != MKBETAG('t', 'f', 'r', 'a')) {
3810  return -1;
3811  }
3812  av_log(mov->fc, AV_LOG_VERBOSE, "found tfra\n");
3813  index = av_mallocz(sizeof(MOVFragmentIndex));
3814  if (!index) {
3815  return AVERROR(ENOMEM);
3816  }
3817  mov->fragment_index_count++;
3818  if ((err = av_reallocp(&mov->fragment_index_data,
3819  mov->fragment_index_count *
3820  sizeof(MOVFragmentIndex*))) < 0) {
3821  av_freep(&index);
3822  return err;
3823  }
3824  mov->fragment_index_data[mov->fragment_index_count - 1] =
3825  index;
3826 
3827  version = avio_r8(f);
3828  avio_rb24(f);
3829  index->track_id = avio_rb32(f);
3830  fieldlength = avio_rb32(f);
3831  index->item_count = avio_rb32(f);
3832  index->items = av_mallocz(
3833  index->item_count * sizeof(MOVFragmentIndexItem));
3834  if (!index->items) {
3835  return AVERROR(ENOMEM);
3836  }
3837  for (i = 0; i < index->item_count; i++) {
3838  int64_t time, offset;
3839  if (version == 1) {
3840  time = avio_rb64(f);
3841  offset = avio_rb64(f);
3842  } else {
3843  time = avio_rb32(f);
3844  offset = avio_rb32(f);
3845  }
3846  index->items[i].time = time;
3847  index->items[i].moof_offset = offset;
3848  for (j = 0; j < ((fieldlength >> 4) & 3) + 1; j++)
3849  avio_r8(f);
3850  for (j = 0; j < ((fieldlength >> 2) & 3) + 1; j++)
3851  avio_r8(f);
3852  for (j = 0; j < ((fieldlength >> 0) & 3) + 1; j++)
3853  avio_r8(f);
3854  }
3855 
3856  avio_seek(f, pos + size, SEEK_SET);
3857  return 0;
3858 }
3859 
3861 {
3862  int64_t stream_size = avio_size(f);
3863  int64_t original_pos = avio_tell(f);
3864  int64_t seek_ret;
3865  int32_t mfra_size;
3866  int ret = -1;
3867  if ((seek_ret = avio_seek(f, stream_size - 4, SEEK_SET)) < 0) {
3868  ret = seek_ret;
3869  goto fail;
3870  }
3871  mfra_size = avio_rb32(f);
3872  if (mfra_size < 0 || mfra_size > stream_size) {
3873  av_log(c->fc, AV_LOG_DEBUG, "doesn't look like mfra (unreasonable size)\n");
3874  goto fail;
3875  }
3876  if ((seek_ret = avio_seek(f, -mfra_size, SEEK_CUR)) < 0) {
3877  ret = seek_ret;
3878  goto fail;
3879  }
3880  if (avio_rb32(f) != mfra_size) {
3881  av_log(c->fc, AV_LOG_DEBUG, "doesn't look like mfra (size mismatch)\n");
3882  goto fail;
3883  }
3884  if (avio_rb32(f) != MKBETAG('m', 'f', 'r', 'a')) {
3885  av_log(c->fc, AV_LOG_DEBUG, "doesn't look like mfra (tag mismatch)\n");
3886  goto fail;
3887  }
3888  ret = 0;
3889  av_log(c->fc, AV_LOG_VERBOSE, "stream has mfra\n");
3890  while (!read_tfra(c, f)) {
3891  /* Empty */
3892  }
3893 fail:
3894  seek_ret = avio_seek(f, original_pos, SEEK_SET);
3895  if (seek_ret < 0) {
3896  av_log(c->fc, AV_LOG_ERROR,
3897  "failed to seek back after looking for mfra\n");
3898  ret = seek_ret;
3899  }
3900  return ret;
3901 }
3902 
3904 {
3905  MOVContext *mov = s->priv_data;
3906  AVIOContext *pb = s->pb;
3907  int j, err;
3908  MOVAtom atom = { AV_RL32("root") };
3909  int i;
3910 
3911  mov->fc = s;
3912  /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
3913  if (pb->seekable)
3914  atom.size = avio_size(pb);
3915  else
3916  atom.size = INT64_MAX;
3917 
3918  /* check MOV header */
3919  do {
3920  if (mov->moov_retry)
3921  avio_seek(pb, 0, SEEK_SET);
3922  if ((err = mov_read_default(mov, pb, atom)) < 0) {
3923  av_log(s, AV_LOG_ERROR, "error reading header\n");
3924  mov_read_close(s);
3925  return err;
3926  }
3927  } while (pb->seekable && !mov->found_moov && !mov->moov_retry++);
3928  if (!mov->found_moov) {
3929  av_log(s, AV_LOG_ERROR, "moov atom not found\n");
3930  mov_read_close(s);
3931  return AVERROR_INVALIDDATA;
3932  }
3933  av_dlog(mov->fc, "on_parse_exit_offset=%"PRId64"\n", avio_tell(pb));
3934 
3935  if (pb->seekable) {
3936  if (mov->chapter_track > 0)
3937  mov_read_chapters(s);
3938  for (i = 0; i < s->nb_streams; i++)
3939  if (s->streams[i]->codec->codec_tag == AV_RL32("tmcd"))
3940  mov_read_timecode_track(s, s->streams[i]);
3941  }
3942 
3943  /* copy timecode metadata from tmcd tracks to the related video streams */
3944  for (i = 0; i < s->nb_streams; i++) {
3945  AVStream *st = s->streams[i];
3946  MOVStreamContext *sc = st->priv_data;
3947  if (sc->timecode_track > 0) {
3948  AVDictionaryEntry *tcr;
3949  int tmcd_st_id = -1;
3950 
3951  for (j = 0; j < s->nb_streams; j++)
3952  if (s->streams[j]->id == sc->timecode_track)
3953  tmcd_st_id = j;
3954 
3955  if (tmcd_st_id < 0 || tmcd_st_id == i)
3956  continue;
3957  tcr = av_dict_get(s->streams[tmcd_st_id]->metadata, "timecode", NULL, 0);
3958  if (tcr)
3959  av_dict_set(&st->metadata, "timecode", tcr->value, 0);
3960  }
3961  }
3963 
3964  for (i = 0; i < s->nb_streams; i++) {
3965  AVStream *st = s->streams[i];
3966  MOVStreamContext *sc = st->priv_data;
3967  fix_timescale(mov, sc);
3969  st->skip_samples = sc->start_pad;
3970  }
3971  if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && sc->nb_frames_for_fps > 0 && sc->duration_for_fps > 0)
3973  sc->time_scale*(int64_t)sc->nb_frames_for_fps, sc->duration_for_fps, INT_MAX);
3974  if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3975  if (st->codec->width <= 0 || st->codec->height <= 0) {
3976  st->codec->width = sc->width;
3977  st->codec->height = sc->height;
3978  }
3979  if (st->codec->codec_id == AV_CODEC_ID_DVD_SUBTITLE) {
3980  if ((err = mov_rewrite_dvd_sub_extradata(st)) < 0)
3981  return err;
3982  }
3983  }
3984  }
3985 
3986  if (mov->trex_data) {
3987  for (i = 0; i < s->nb_streams; i++) {
3988  AVStream *st = s->streams[i];
3989  MOVStreamContext *sc = st->priv_data;
3990  if (st->duration > 0)
3991  st->codec->bit_rate = sc->data_size * 8 * sc->time_scale / st->duration;
3992  }
3993  }
3994 
3995  if (mov->use_mfra_for > 0) {
3996  for (i = 0; i < s->nb_streams; i++) {
3997  AVStream *st = s->streams[i];
3998  MOVStreamContext *sc = st->priv_data;
3999  if (sc->duration_for_fps > 0) {
4000  st->codec->bit_rate = sc->data_size * 8 * sc->time_scale /
4001  sc->duration_for_fps;
4002  }
4003  }
4004  }
4005 
4006  for (i = 0; i < mov->bitrates_count && i < s->nb_streams; i++) {
4007  if (mov->bitrates[i]) {
4008  s->streams[i]->codec->bit_rate = mov->bitrates[i];
4009  }
4010  }
4011 
4012  ff_rfps_calculate(s);
4013 
4014  for (i = 0; i < s->nb_streams; i++) {
4015  AVStream *st = s->streams[i];
4016  MOVStreamContext *sc = st->priv_data;
4017 
4018  switch (st->codec->codec_type) {
4019  case AVMEDIA_TYPE_AUDIO:
4020  err = ff_replaygain_export(st, s->metadata);
4021  if (err < 0) {
4022  mov_read_close(s);
4023  return err;
4024  }
4025  break;
4026  case AVMEDIA_TYPE_VIDEO:
4027  if (sc->display_matrix) {
4028  AVPacketSideData *sd, *tmp;
4029 
4030  tmp = av_realloc_array(st->side_data,
4031  st->nb_side_data + 1, sizeof(*tmp));
4032  if (!tmp)
4033  return AVERROR(ENOMEM);
4034 
4035  st->side_data = tmp;
4036  st->nb_side_data++;
4037 
4038  sd = &st->side_data[st->nb_side_data - 1];
4040  sd->size = sizeof(int32_t) * 9;
4041  sd->data = (uint8_t*)sc->display_matrix;
4042  sc->display_matrix = NULL;
4043  }
4044  break;
4045  }
4046  }
4047 
4048  return 0;
4049 }
4050 
4052 {
4053  AVIndexEntry *sample = NULL;
4054  int64_t best_dts = INT64_MAX;
4055  int i;
4056  for (i = 0; i < s->nb_streams; i++) {
4057  AVStream *avst = s->streams[i];
4058  MOVStreamContext *msc = avst->priv_data;
4059  if (msc->pb && msc->current_sample < avst->nb_index_entries) {
4060  AVIndexEntry *current_sample = &avst->index_entries[msc->current_sample];
4061  int64_t dts = av_rescale(current_sample->timestamp, AV_TIME_BASE, msc->time_scale);
4062  av_dlog(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
4063  if (!sample || (!s->pb->seekable && current_sample->pos < sample->pos) ||
4064  (s->pb->seekable &&
4065  ((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb &&
4066  ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
4067  (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) {
4068  sample = current_sample;
4069  best_dts = dts;
4070  *st = avst;
4071  }
4072  }
4073  }
4074  return sample;
4075 }
4076 
4078 {
4079  MOVContext *mov = s->priv_data;
4080  MOVStreamContext *sc;
4082  AVStream *st = NULL;
4083  int ret;
4084  mov->fc = s;
4085  retry:
4086  sample = mov_find_next_sample(s, &st);
4087  if (!sample) {
4088  mov->found_mdat = 0;
4089  if (!mov->next_root_atom)
4090  return AVERROR_EOF;
4091  avio_seek(s->pb, mov->next_root_atom, SEEK_SET);
4092  mov->next_root_atom = 0;
4093  if (mov_read_default(mov, s->pb, (MOVAtom){ AV_RL32("root"), INT64_MAX }) < 0 ||
4094  avio_feof(s->pb))
4095  return AVERROR_EOF;
4096  av_dlog(s, "read fragments, offset 0x%"PRIx64"\n", avio_tell(s->pb));
4097  goto retry;
4098  }
4099  sc = st->priv_data;
4100  /* must be done just before reading, to avoid infinite loop on sample */
4101  sc->current_sample++;
4102 
4103  if (mov->next_root_atom) {
4104  sample->pos = FFMIN(sample->pos, mov->next_root_atom);
4105  sample->size = FFMIN(sample->size, (mov->next_root_atom - sample->pos));
4106  }
4107 
4108  if (st->discard != AVDISCARD_ALL) {
4109  if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
4110  av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
4111  sc->ffindex, sample->pos);
4112  return AVERROR_INVALIDDATA;
4113  }
4114  ret = av_get_packet(sc->pb, pkt, sample->size);
4115  if (ret < 0)
4116  return ret;
4117  if (sc->has_palette) {
4118  uint8_t *pal;
4119 
4121  if (!pal) {
4122  av_log(mov->fc, AV_LOG_ERROR, "Cannot append palette to packet\n");
4123  } else {
4124  memcpy(pal, sc->palette, AVPALETTE_SIZE);
4125  sc->has_palette = 0;
4126  }
4127  }
4128 #if CONFIG_DV_DEMUXER
4129  if (mov->dv_demux && sc->dv_audio_container) {
4130  avpriv_dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size, pkt->pos);
4131  av_free(pkt->data);
4132  pkt->size = 0;
4133  ret = avpriv_dv_get_packet(mov->dv_demux, pkt);
4134  if (ret < 0)
4135  return ret;
4136  }
4137 #endif
4138  }
4139 
4140  pkt->stream_index = sc->ffindex;
4141  pkt->dts = sample->timestamp;
4142  if (sc->ctts_data && sc->ctts_index < sc->ctts_count) {
4143  pkt->pts = pkt->dts + sc->dts_shift + sc->ctts_data[sc->ctts_index].duration;
4144  /* update ctts context */
4145  sc->ctts_sample++;
4146  if (sc->ctts_index < sc->ctts_count &&
4147  sc->ctts_data[sc->ctts_index].count == sc->ctts_sample) {
4148  sc->ctts_index++;
4149  sc->ctts_sample = 0;
4150  }
4151  if (sc->wrong_dts)
4152  pkt->dts = AV_NOPTS_VALUE;
4153  } else {
4154  int64_t next_dts = (sc->current_sample < st->nb_index_entries) ?
4156  pkt->duration = next_dts - pkt->dts;
4157  pkt->pts = pkt->dts;
4158  }
4159  if (st->discard == AVDISCARD_ALL)
4160  goto retry;
4161  pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? AV_PKT_FLAG_KEY : 0;
4162  pkt->pos = sample->pos;
4163  av_dlog(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n",
4164  pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
4165  return 0;
4166 }
4167 
4168 static int mov_seek_stream(AVFormatContext *s, AVStream *st, int64_t timestamp, int flags)
4169 {
4170  MOVStreamContext *sc = st->priv_data;
4171  int sample, time_sample;
4172  int i;
4173 
4174  sample = av_index_search_timestamp(st, timestamp, flags);
4175  av_dlog(s, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
4176  if (sample < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
4177  sample = 0;
4178  if (sample < 0) /* not sure what to do */
4179  return AVERROR_INVALIDDATA;
4180  sc->current_sample = sample;
4181  av_dlog(s, "stream %d, found sample %d\n", st->index, sc->current_sample);
4182  /* adjust ctts index */
4183  if (sc->ctts_data) {
4184  time_sample = 0;
4185  for (i = 0; i < sc->ctts_count; i++) {
4186  int next = time_sample + sc->ctts_data[i].count;
4187  if (next > sc->current_sample) {
4188  sc->ctts_index = i;
4189  sc->ctts_sample = sc->current_sample - time_sample;
4190  break;
4191  }
4192  time_sample = next;
4193  }
4194  }
4195  return sample;
4196 }