FFmpeg
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
mov.c
Go to the documentation of this file.
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/intreadwrite.h"
33 #include "libavutil/intfloat.h"
34 #include "libavutil/mathematics.h"
36 #include "libavutil/avstring.h"
37 #include "libavutil/dict.h"
38 #include "libavutil/display.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 || str_size >= INT_MAX/2)
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_mallocz(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  enum AVAudioServiceType *ast;
641  int ac3info, acmod, lfeon, bsmod;
642 
643  if (c->fc->nb_streams < 1)
644  return 0;
645  st = c->fc->streams[c->fc->nb_streams-1];
646 
648  sizeof(*ast));
649  if (!ast)
650  return AVERROR(ENOMEM);
651 
652  ac3info = avio_rb24(pb);
653  bsmod = (ac3info >> 14) & 0x7;
654  acmod = (ac3info >> 11) & 0x7;
655  lfeon = (ac3info >> 10) & 0x1;
656  st->codec->channels = ((int[]){2,1,2,3,3,4,4,5})[acmod] + lfeon;
658  if (lfeon)
660  *ast = bsmod;
661  if (st->codec->channels > 1 && bsmod == 0x7)
663 
664  st->codec->audio_service_type = *ast;
665 
666  return 0;
667 }
668 
670 {
671  AVStream *st;
672  enum AVAudioServiceType *ast;
673  int eac3info, acmod, lfeon, bsmod;
674 
675  if (c->fc->nb_streams < 1)
676  return 0;
677  st = c->fc->streams[c->fc->nb_streams-1];
678 
680  sizeof(*ast));
681  if (!ast)
682  return AVERROR(ENOMEM);
683 
684  /* No need to parse fields for additional independent substreams and its
685  * associated dependent substreams since libavcodec's E-AC-3 decoder
686  * does not support them yet. */
687  avio_rb16(pb); /* data_rate and num_ind_sub */
688  eac3info = avio_rb24(pb);
689  bsmod = (eac3info >> 12) & 0x1f;
690  acmod = (eac3info >> 9) & 0x7;
691  lfeon = (eac3info >> 8) & 0x1;
693  if (lfeon)
696  *ast = bsmod;
697  if (st->codec->channels > 1 && bsmod == 0x7)
699 
700  st->codec->audio_service_type = *ast;
701 
702  return 0;
703 }
704 
706 {
707  AVStream *st;
708 
709  if (c->fc->nb_streams < 1)
710  return 0;
711  st = c->fc->streams[c->fc->nb_streams-1];
712 
713  if (atom.size < 16)
714  return 0;
715 
716  /* skip version and flags */
717  avio_skip(pb, 4);
718 
719  ff_mov_read_chan(c->fc, pb, st, atom.size - 4);
720 
721  return 0;
722 }
723 
725 {
726  AVStream *st;
727  int ret;
728 
729  if (c->fc->nb_streams < 1)
730  return 0;
731  st = c->fc->streams[c->fc->nb_streams-1];
732 
733  if ((ret = ff_get_wav_header(pb, st->codec, atom.size, 0)) < 0)
734  av_log(c->fc, AV_LOG_WARNING, "get_wav_header failed\n");
735 
736  return ret;
737 }
738 
740 {
741  const int num = avio_rb32(pb);
742  const int den = avio_rb32(pb);
743  AVStream *st;
744 
745  if (c->fc->nb_streams < 1)
746  return 0;
747  st = c->fc->streams[c->fc->nb_streams-1];
748 
749  if ((st->sample_aspect_ratio.den != 1 || st->sample_aspect_ratio.num) && // default
750  (den != st->sample_aspect_ratio.den || num != st->sample_aspect_ratio.num)) {
752  "sample aspect ratio already set to %d:%d, ignoring 'pasp' atom (%d:%d)\n",
754  num, den);
755  } else if (den != 0) {
756  st->sample_aspect_ratio.num = num;
757  st->sample_aspect_ratio.den = den;
758  }
759  return 0;
760 }
761 
762 /* this atom contains actual media data */
764 {
765  if (atom.size == 0) /* wrong one (MP4) */
766  return 0;
767  c->found_mdat=1;
768  return 0; /* now go for moov */
769 }
770 
771 /* read major brand, minor version and compatible brands and store them as metadata */
773 {
774  uint32_t minor_ver;
775  int comp_brand_size;
776  char* comp_brands_str;
777  uint8_t type[5] = {0};
778 
779  avio_read(pb, type, 4);
780  if (strcmp(type, "qt "))
781  c->isom = 1;
782  av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
783  av_dict_set(&c->fc->metadata, "major_brand", type, 0);
784  minor_ver = avio_rb32(pb); /* minor version */
785  av_dict_set_int(&c->fc->metadata, "minor_version", minor_ver, 0);
786 
787  comp_brand_size = atom.size - 8;
788  if (comp_brand_size < 0)
789  return AVERROR_INVALIDDATA;
790  comp_brands_str = av_malloc(comp_brand_size + 1); /* Add null terminator */
791  if (!comp_brands_str)
792  return AVERROR(ENOMEM);
793  avio_read(pb, comp_brands_str, comp_brand_size);
794  comp_brands_str[comp_brand_size] = 0;
795  av_dict_set(&c->fc->metadata, "compatible_brands", comp_brands_str, 0);
796  av_freep(&comp_brands_str);
797 
798  return 0;
799 }
800 
801 /* this atom should contain all header atoms */
803 {
804  int ret;
805 
806  if (c->found_moov) {
807  av_log(c->fc, AV_LOG_WARNING, "Found duplicated MOOV Atom. Skipped it\n");
808  avio_skip(pb, atom.size);
809  return 0;
810  }
811 
812  if ((ret = mov_read_default(c, pb, atom)) < 0)
813  return ret;
814  /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
815  /* so we don't parse the whole file if over a network */
816  c->found_moov=1;
817  return 0; /* now go for mdat */
818 }
819 
821 {
822  if (!c->has_looked_for_mfra && c->use_mfra_for > 0) {
823  c->has_looked_for_mfra = 1;
824  if (pb->seekable) {
825  int ret;
826  av_log(c->fc, AV_LOG_VERBOSE, "stream has moof boxes, will look "
827  "for a mfra\n");
828  if ((ret = mov_read_mfra(c, pb)) < 0) {
829  av_log(c->fc, AV_LOG_VERBOSE, "found a moof box but failed to "
830  "read the mfra (may be a live ismv)\n");
831  }
832  } else {
833  av_log(c->fc, AV_LOG_VERBOSE, "found a moof box but stream is not "
834  "seekable, can not look for mfra\n");
835  }
836  }
838  av_dlog(c->fc, "moof offset %"PRIx64"\n", c->fragment.moof_offset);
839  return mov_read_default(c, pb, atom);
840 }
841 
842 static void mov_metadata_creation_time(AVDictionary **metadata, int64_t time)
843 {
844  char buffer[32];
845  if (time) {
846  struct tm *ptm, tmbuf;
847  time_t timet;
848  if(time >= 2082844800)
849  time -= 2082844800; /* seconds between 1904-01-01 and Epoch */
850  timet = time;
851  ptm = gmtime_r(&timet, &tmbuf);
852  if (!ptm) return;
853  if (strftime(buffer, sizeof(buffer), "%Y-%m-%d %H:%M:%S", ptm))
854  av_dict_set(metadata, "creation_time", buffer, 0);
855  }
856 }
857 
859 {
860  AVStream *st;
861  MOVStreamContext *sc;
862  int version;
863  char language[4] = {0};
864  unsigned lang;
865  int64_t creation_time;
866 
867  if (c->fc->nb_streams < 1)
868  return 0;
869  st = c->fc->streams[c->fc->nb_streams-1];
870  sc = st->priv_data;
871 
872  if (sc->time_scale) {
873  av_log(c->fc, AV_LOG_ERROR, "Multiple mdhd?\n");
874  return AVERROR_INVALIDDATA;
875  }
876 
877  version = avio_r8(pb);
878  if (version > 1) {
879  avpriv_request_sample(c->fc, "Version %d", version);
880  return AVERROR_PATCHWELCOME;
881  }
882  avio_rb24(pb); /* flags */
883  if (version == 1) {
884  creation_time = avio_rb64(pb);
885  avio_rb64(pb);
886  } else {
887  creation_time = avio_rb32(pb);
888  avio_rb32(pb); /* modification time */
889  }
890  mov_metadata_creation_time(&st->metadata, creation_time);
891 
892  sc->time_scale = avio_rb32(pb);
893  st->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
894 
895  lang = avio_rb16(pb); /* language */
896  if (ff_mov_lang_to_iso639(lang, language))
897  av_dict_set(&st->metadata, "language", language, 0);
898  avio_rb16(pb); /* quality */
899 
900  return 0;
901 }
902 
904 {
905  int64_t creation_time;
906  int version = avio_r8(pb); /* version */
907  avio_rb24(pb); /* flags */
908 
909  if (version == 1) {
910  creation_time = avio_rb64(pb);
911  avio_rb64(pb);
912  } else {
913  creation_time = avio_rb32(pb);
914  avio_rb32(pb); /* modification time */
915  }
916  mov_metadata_creation_time(&c->fc->metadata, creation_time);
917  c->time_scale = avio_rb32(pb); /* time scale */
918 
919  av_dlog(c->fc, "time scale = %i\n", c->time_scale);
920 
921  c->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
922  // set the AVCodecContext duration because the duration of individual tracks
923  // may be inaccurate
924  if (c->time_scale > 0 && !c->trex_data)
926  avio_rb32(pb); /* preferred scale */
927 
928  avio_rb16(pb); /* preferred volume */
929 
930  avio_skip(pb, 10); /* reserved */
931 
932  avio_skip(pb, 36); /* display matrix */
933 
934  avio_rb32(pb); /* preview time */
935  avio_rb32(pb); /* preview duration */
936  avio_rb32(pb); /* poster time */
937  avio_rb32(pb); /* selection time */
938  avio_rb32(pb); /* selection duration */
939  avio_rb32(pb); /* current time */
940  avio_rb32(pb); /* next track ID */
941  return 0;
942 }
943 
945 {
946  AVStream *st;
947  int little_endian;
948 
949  if (c->fc->nb_streams < 1)
950  return 0;
951  st = c->fc->streams[c->fc->nb_streams-1];
952 
953  little_endian = avio_rb16(pb) & 0xFF;
954  av_dlog(c->fc, "enda %d\n", little_endian);
955  if (little_endian == 1) {
956  switch (st->codec->codec_id) {
959  break;
962  break;
965  break;
968  break;
969  default:
970  break;
971  }
972  }
973  return 0;
974 }
975 
977 {
978  AVStream *st;
979  char color_parameter_type[5] = { 0 };
980  int color_primaries, color_trc, color_matrix;
981 
982  if (c->fc->nb_streams < 1)
983  return 0;
984  st = c->fc->streams[c->fc->nb_streams - 1];
985 
986  avio_read(pb, color_parameter_type, 4);
987  if (strncmp(color_parameter_type, "nclx", 4) &&
988  strncmp(color_parameter_type, "nclc", 4)) {
989  av_log(c->fc, AV_LOG_WARNING, "unsupported color_parameter_type %s\n",
990  color_parameter_type);
991  return 0;
992  }
993 
994  color_primaries = avio_rb16(pb);
995  color_trc = avio_rb16(pb);
996  color_matrix = avio_rb16(pb);
997 
998  av_dlog(c->fc, "%s: pri %d trc %d matrix %d",
999  color_parameter_type, color_primaries, color_trc, color_matrix);
1000 
1001  if (c->isom) {
1002  uint8_t color_range = avio_r8(pb) >> 7;
1003  av_dlog(c->fc, " full %"PRIu8"", color_range);
1004  if (color_range)
1006  else
1008  /* 14496-12 references JPEG XR specs (rather than the more complete
1009  * 23001-8) so some adjusting is required */
1010  if (color_primaries >= AVCOL_PRI_FILM)
1011  color_primaries = AVCOL_PRI_UNSPECIFIED;
1012  if ((color_trc >= AVCOL_TRC_LINEAR &&
1013  color_trc <= AVCOL_TRC_LOG_SQRT) ||
1014  color_trc >= AVCOL_TRC_BT2020_10)
1015  color_trc = AVCOL_TRC_UNSPECIFIED;
1016  if (color_matrix >= AVCOL_SPC_BT2020_NCL)
1017  color_matrix = AVCOL_SPC_UNSPECIFIED;
1019  st->codec->color_trc = color_trc;
1020  st->codec->colorspace = color_matrix;
1021  } else {
1022  /* color primaries, Table 4-4 */
1023  switch (color_primaries) {
1024  case 1: st->codec->color_primaries = AVCOL_PRI_BT709; break;
1025  case 5: st->codec->color_primaries = AVCOL_PRI_SMPTE170M; break;
1026  case 6: st->codec->color_primaries = AVCOL_PRI_SMPTE240M; break;
1027  }
1028  /* color transfer, Table 4-5 */
1029  switch (color_trc) {
1030  case 1: st->codec->color_trc = AVCOL_TRC_BT709; break;
1031  case 7: st->codec->color_trc = AVCOL_TRC_SMPTE240M; break;
1032  }
1033  /* color matrix, Table 4-6 */
1034  switch (color_matrix) {
1035  case 1: st->codec->colorspace = AVCOL_SPC_BT709; break;
1036  case 6: st->codec->colorspace = AVCOL_SPC_BT470BG; break;
1037  case 7: st->codec->colorspace = AVCOL_SPC_SMPTE240M; break;
1038  }
1039  }
1040  av_dlog(c->fc, "\n");
1041 
1042  return 0;
1043 }
1044 
1046 {
1047  AVStream *st;
1048  unsigned mov_field_order;
1049  enum AVFieldOrder decoded_field_order = AV_FIELD_UNKNOWN;
1050 
1051  if (c->fc->nb_streams < 1) // will happen with jp2 files
1052  return 0;
1053  st = c->fc->streams[c->fc->nb_streams-1];
1054  if (atom.size < 2)
1055  return AVERROR_INVALIDDATA;
1056  mov_field_order = avio_rb16(pb);
1057  if ((mov_field_order & 0xFF00) == 0x0100)
1058  decoded_field_order = AV_FIELD_PROGRESSIVE;
1059  else if ((mov_field_order & 0xFF00) == 0x0200) {
1060  switch (mov_field_order & 0xFF) {
1061  case 0x01: decoded_field_order = AV_FIELD_TT;
1062  break;
1063  case 0x06: decoded_field_order = AV_FIELD_BB;
1064  break;
1065  case 0x09: decoded_field_order = AV_FIELD_TB;
1066  break;
1067  case 0x0E: decoded_field_order = AV_FIELD_BT;
1068  break;
1069  }
1070  }
1071  if (decoded_field_order == AV_FIELD_UNKNOWN && mov_field_order) {
1072  av_log(NULL, AV_LOG_ERROR, "Unknown MOV field order 0x%04x\n", mov_field_order);
1073  }
1074  st->codec->field_order = decoded_field_order;
1075 
1076  return 0;
1077 }
1078 
1079 /* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
1081  enum AVCodecID codec_id)
1082 {
1083  AVStream *st;
1084  uint64_t size;
1085  uint8_t *buf;
1086  int err;
1087 
1088  if (c->fc->nb_streams < 1) // will happen with jp2 files
1089  return 0;
1090  st= c->fc->streams[c->fc->nb_streams-1];
1091 
1092  if (st->codec->codec_id != codec_id)
1093  return 0; /* unexpected codec_id - don't mess with extradata */
1094 
1095  size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
1096  if (size > INT_MAX || (uint64_t)atom.size > INT_MAX)
1097  return AVERROR_INVALIDDATA;
1098  if ((err = av_reallocp(&st->codec->extradata, size)) < 0) {
1099  st->codec->extradata_size = 0;
1100  return err;
1101  }
1102  buf = st->codec->extradata + st->codec->extradata_size;
1104  AV_WB32( buf , atom.size + 8);
1105  AV_WL32( buf + 4, atom.type);
1106  err = avio_read(pb, buf + 8, atom.size);
1107  if (err < 0) {
1108  return err;
1109  } else if (err < atom.size) {
1110  av_log(c->fc, AV_LOG_WARNING, "truncated extradata\n");
1111  st->codec->extradata_size -= atom.size - err;
1112  }
1113  memset(buf + 8 + err, 0, FF_INPUT_BUFFER_PADDING_SIZE);
1114  return 0;
1115 }
1116 
1117 /* wrapper functions for reading ALAC/AVS/MJPEG/MJPEG2000 extradata atoms only for those codecs */
1119 {
1120  return mov_read_extradata(c, pb, atom, AV_CODEC_ID_ALAC);
1121 }
1122 
1124 {
1125  return mov_read_extradata(c, pb, atom, AV_CODEC_ID_AVS);
1126 }
1127 
1129 {
1130  return mov_read_extradata(c, pb, atom, AV_CODEC_ID_JPEG2000);
1131 }
1132 
1134 {
1135  return mov_read_extradata(c, pb, atom, AV_CODEC_ID_R10K);
1136 }
1137 
1139 {
1140  int ret = mov_read_extradata(c, pb, atom, AV_CODEC_ID_AVUI);
1141  if(ret == 0)
1142  ret = mov_read_extradata(c, pb, atom, AV_CODEC_ID_DNXHD);
1143  return ret;
1144 }
1145 
1147 {
1148  int ret = mov_read_extradata(c, pb, atom, AV_CODEC_ID_TARGA_Y216);
1149 
1150  if (!ret && c->fc->nb_streams >= 1) {
1151  AVCodecContext *avctx = c->fc->streams[c->fc->nb_streams-1]->codec;
1152  if (avctx->extradata_size >= 40) {
1153  avctx->height = AV_RB16(&avctx->extradata[36]);
1154  avctx->width = AV_RB16(&avctx->extradata[38]);
1155  }
1156  }
1157  return ret;
1158 }
1159 
1161 {
1162  if (c->fc->nb_streams >= 1) {
1163  AVCodecContext *codec = c->fc->streams[c->fc->nb_streams-1]->codec;
1164  if (codec->codec_tag == MKTAG('A', 'V', 'i', 'n') &&
1165  codec->codec_id == AV_CODEC_ID_H264 &&
1166  atom.size > 11) {
1167  avio_skip(pb, 10);
1168  /* For AVID AVCI50, force width of 1440 to be able to select the correct SPS and PPS */
1169  if (avio_rb16(pb) == 0xd4d)
1170  codec->width = 1440;
1171  return 0;
1172  }
1173  }
1174 
1175  return mov_read_avid(c, pb, atom);
1176 }
1177 
1179 {
1180  return mov_read_extradata(c, pb, atom, AV_CODEC_ID_SVQ3);
1181 }
1182 
1184 {
1185  AVStream *st;
1186 
1187  if (c->fc->nb_streams < 1)
1188  return 0;
1189  st = c->fc->streams[c->fc->nb_streams-1];
1190 
1191  if ((uint64_t)atom.size > (1<<30))
1192  return AVERROR_INVALIDDATA;
1193 
1194  if (st->codec->codec_id == AV_CODEC_ID_QDM2 ||
1195  st->codec->codec_id == AV_CODEC_ID_QDMC ||
1196  st->codec->codec_id == AV_CODEC_ID_SPEEX) {
1197  // pass all frma atom to codec, needed at least for QDMC and QDM2
1198  av_freep(&st->codec->extradata);
1199  if (ff_get_extradata(st->codec, pb, atom.size) < 0)
1200  return AVERROR(ENOMEM);
1201  } else if (atom.size > 8) { /* to read frma, esds atoms */
1202  int ret;
1203  if ((ret = mov_read_default(c, pb, atom)) < 0)
1204  return ret;
1205  } else
1206  avio_skip(pb, atom.size);
1207  return 0;
1208 }
1209 
1210 /**
1211  * This function reads atom content and puts data in extradata without tag
1212  * nor size unlike mov_read_extradata.
1213  */
1215 {
1216  AVStream *st;
1217 
1218  if (c->fc->nb_streams < 1)
1219  return 0;
1220  st = c->fc->streams[c->fc->nb_streams-1];
1221 
1222  if ((uint64_t)atom.size > (1<<30))
1223  return AVERROR_INVALIDDATA;
1224 
1225  if (atom.size >= 10) {
1226  // Broken files created by legacy versions of libavformat will
1227  // wrap a whole fiel atom inside of a glbl atom.
1228  unsigned size = avio_rb32(pb);
1229  unsigned type = avio_rl32(pb);
1230  avio_seek(pb, -8, SEEK_CUR);
1231  if (type == MKTAG('f','i','e','l') && size == atom.size)
1232  return mov_read_default(c, pb, atom);
1233  }
1234  if (st->codec->extradata_size > 1 && st->codec->extradata) {
1235  av_log(c, AV_LOG_WARNING, "ignoring multiple glbl\n");
1236  return 0;
1237  }
1238  av_freep(&st->codec->extradata);
1239  if (ff_get_extradata(st->codec, pb, atom.size) < 0)
1240  return AVERROR(ENOMEM);
1241 
1242  return 0;
1243 }
1244 
1246 {
1247  AVStream *st;
1248  uint8_t profile_level;
1249  int ret;
1250 
1251  if (c->fc->nb_streams < 1)
1252  return 0;
1253  st = c->fc->streams[c->fc->nb_streams-1];
1254 
1255  if (atom.size >= (1<<28) || atom.size < 7)
1256  return AVERROR_INVALIDDATA;
1257 
1258  profile_level = avio_r8(pb);
1259  if ((profile_level & 0xf0) != 0xc0)
1260  return 0;
1261 
1262  avio_seek(pb, 6, SEEK_CUR);
1263  av_freep(&st->codec->extradata);
1264  if ((ret = ff_get_extradata(st->codec, pb, atom.size - 7)) < 0)
1265  return ret;
1266 
1267  return 0;
1268 }
1269 
1270 /**
1271  * An strf atom is a BITMAPINFOHEADER struct. This struct is 40 bytes itself,
1272  * but can have extradata appended at the end after the 40 bytes belonging
1273  * to the struct.
1274  */
1276 {
1277  AVStream *st;
1278 
1279  if (c->fc->nb_streams < 1)
1280  return 0;
1281  if (atom.size <= 40)
1282  return 0;
1283  st = c->fc->streams[c->fc->nb_streams-1];
1284 
1285  if ((uint64_t)atom.size > (1<<30))
1286  return AVERROR_INVALIDDATA;
1287 
1288  avio_skip(pb, 40);
1289  av_freep(&st->codec->extradata);
1290  if (ff_get_extradata(st->codec, pb, atom.size - 40) < 0)
1291  return AVERROR(ENOMEM);
1292  return 0;
1293 }
1294 
1296 {
1297  AVStream *st;
1298  MOVStreamContext *sc;
1299  unsigned int i, entries;
1300 
1301  if (c->fc->nb_streams < 1)
1302  return 0;
1303  st = c->fc->streams[c->fc->nb_streams-1];
1304  sc = st->priv_data;
1305 
1306  avio_r8(pb); /* version */
1307  avio_rb24(pb); /* flags */
1308 
1309  entries = avio_rb32(pb);
1310 
1311  if (!entries)
1312  return 0;
1313 
1314  if (sc->chunk_offsets)
1315  av_log(c->fc, AV_LOG_WARNING, "Duplicated STCO atom\n");
1316  av_free(sc->chunk_offsets);
1317  sc->chunk_count = 0;
1318  sc->chunk_offsets = av_malloc_array(entries, sizeof(*sc->chunk_offsets));
1319  if (!sc->chunk_offsets)
1320  return AVERROR(ENOMEM);
1321  sc->chunk_count = entries;
1322 
1323  if (atom.type == MKTAG('s','t','c','o'))
1324  for (i = 0; i < entries && !pb->eof_reached; i++)
1325  sc->chunk_offsets[i] = avio_rb32(pb);
1326  else if (atom.type == MKTAG('c','o','6','4'))
1327  for (i = 0; i < entries && !pb->eof_reached; i++)
1328  sc->chunk_offsets[i] = avio_rb64(pb);
1329  else
1330  return AVERROR_INVALIDDATA;
1331 
1332  sc->chunk_count = i;
1333 
1334  if (pb->eof_reached)
1335  return AVERROR_EOF;
1336 
1337  return 0;
1338 }
1339 
1340 /**
1341  * Compute codec id for 'lpcm' tag.
1342  * See CoreAudioTypes and AudioStreamBasicDescription at Apple.
1343  */
1345 {
1346  /* lpcm flags:
1347  * 0x1 = float
1348  * 0x2 = big-endian
1349  * 0x4 = signed
1350  */
1351  return ff_get_pcm_codec_id(bps, flags & 1, flags & 2, flags & 4 ? -1 : 0);
1352 }
1353 
1354 static int mov_codec_id(AVStream *st, uint32_t format)
1355 {
1356  int id = ff_codec_get_id(ff_codec_movaudio_tags, format);
1357 
1358  if (id <= 0 &&
1359  ((format & 0xFFFF) == 'm' + ('s' << 8) ||
1360  (format & 0xFFFF) == 'T' + ('S' << 8)))
1361  id = ff_codec_get_id(ff_codec_wav_tags, av_bswap32(format) & 0xFFFF);
1362 
1363  if (st->codec->codec_type != AVMEDIA_TYPE_VIDEO && id > 0) {
1365  } else if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO &&
1366  /* skip old asf mpeg4 tag */
1367  format && format != MKTAG('m','p','4','s')) {
1369  if (id <= 0)
1370  id = ff_codec_get_id(ff_codec_bmp_tags, format);
1371  if (id > 0)
1373  else if (st->codec->codec_type == AVMEDIA_TYPE_DATA ||
1375  st->codec->codec_id == AV_CODEC_ID_NONE)) {
1377  if (id > 0)
1379  }
1380  }
1381 
1382  st->codec->codec_tag = format;
1383 
1384  return id;
1385 }
1386 
1388  AVStream *st, MOVStreamContext *sc)
1389 {
1390  uint8_t codec_name[32];
1391  unsigned int color_depth, len, j;
1392  int color_greyscale;
1393  int color_table_id;
1394 
1395  avio_rb16(pb); /* version */
1396  avio_rb16(pb); /* revision level */
1397  avio_rb32(pb); /* vendor */
1398  avio_rb32(pb); /* temporal quality */
1399  avio_rb32(pb); /* spatial quality */
1400 
1401  st->codec->width = avio_rb16(pb); /* width */
1402  st->codec->height = avio_rb16(pb); /* height */
1403 
1404  avio_rb32(pb); /* horiz resolution */
1405  avio_rb32(pb); /* vert resolution */
1406  avio_rb32(pb); /* data size, always 0 */
1407  avio_rb16(pb); /* frames per samples */
1408 
1409  len = avio_r8(pb); /* codec name, pascal string */
1410  if (len > 31)
1411  len = 31;
1412  mov_read_mac_string(c, pb, len, codec_name, sizeof(codec_name));
1413  if (len < 31)
1414  avio_skip(pb, 31 - len);
1415 
1416  if (codec_name[0])
1417  av_dict_set(&st->metadata, "encoder", codec_name, 0);
1418 
1419  /* codec_tag YV12 triggers an UV swap in rawdec.c */
1420  if (!memcmp(codec_name, "Planar Y'CbCr 8-bit 4:2:0", 25)) {
1421  st->codec->codec_tag = MKTAG('I', '4', '2', '0');
1422  st->codec->width &= ~1;
1423  st->codec->height &= ~1;
1424  }
1425  /* Flash Media Server uses tag H263 with Sorenson Spark */
1426  if (st->codec->codec_tag == MKTAG('H','2','6','3') &&
1427  !memcmp(codec_name, "Sorenson H263", 13))
1429 
1430  st->codec->bits_per_coded_sample = avio_rb16(pb); /* depth */
1431  color_table_id = avio_rb16(pb); /* colortable id */
1432  av_dlog(c->fc, "depth %d, ctab id %d\n",
1433  st->codec->bits_per_coded_sample, color_table_id);
1434  /* figure out the palette situation */
1435  color_depth = st->codec->bits_per_coded_sample & 0x1F;
1436  color_greyscale = st->codec->bits_per_coded_sample & 0x20;
1437  /* Do not create a greyscale palette for cinepak */
1438  if (color_greyscale && st->codec->codec_id == AV_CODEC_ID_CINEPAK)
1439  return;
1440 
1441  /* if the depth is 2, 4, or 8 bpp, file is palettized */
1442  if ((color_depth == 2) || (color_depth == 4) || (color_depth == 8)) {
1443  /* for palette traversal */
1444  unsigned int color_start, color_count, color_end;
1445  unsigned char a, r, g, b;
1446 
1447  if (color_greyscale) {
1448  int color_index, color_dec;
1449  /* compute the greyscale palette */
1450  st->codec->bits_per_coded_sample = color_depth;
1451  color_count = 1 << color_depth;
1452  color_index = 255;
1453  color_dec = 256 / (color_count - 1);
1454  for (j = 0; j < color_count; j++) {
1455  r = g = b = color_index;
1456  sc->palette[j] = (0xFFU << 24) | (r << 16) | (g << 8) | (b);
1457  color_index -= color_dec;
1458  if (color_index < 0)
1459  color_index = 0;
1460  }
1461  } else if (color_table_id) {
1462  const uint8_t *color_table;
1463  /* if flag bit 3 is set, use the default palette */
1464  color_count = 1 << color_depth;
1465  if (color_depth == 2)
1466  color_table = ff_qt_default_palette_4;
1467  else if (color_depth == 4)
1468  color_table = ff_qt_default_palette_16;
1469  else
1470  color_table = ff_qt_default_palette_256;
1471 
1472  for (j = 0; j < color_count; j++) {
1473  r = color_table[j * 3 + 0];
1474  g = color_table[j * 3 + 1];
1475  b = color_table[j * 3 + 2];
1476  sc->palette[j] = (0xFFU << 24) | (r << 16) | (g << 8) | (b);
1477  }
1478  } else {
1479  /* load the palette from the file */
1480  color_start = avio_rb32(pb);
1481  color_count = avio_rb16(pb);
1482  color_end = avio_rb16(pb);
1483  if ((color_start <= 255) && (color_end <= 255)) {
1484  for (j = color_start; j <= color_end; j++) {
1485  /* each A, R, G, or B component is 16 bits;
1486  * only use the top 8 bits */
1487  a = avio_r8(pb);
1488  avio_r8(pb);
1489  r = avio_r8(pb);
1490  avio_r8(pb);
1491  g = avio_r8(pb);
1492  avio_r8(pb);
1493  b = avio_r8(pb);
1494  avio_r8(pb);
1495  sc->palette[j] = (a << 24 ) | (r << 16) | (g << 8) | (b);
1496  }
1497  }
1498  }
1499  sc->has_palette = 1;
1500  }
1501 }
1502 
1504  AVStream *st, MOVStreamContext *sc)
1505 {
1506  int bits_per_sample, flags;
1507  uint16_t version = avio_rb16(pb);
1508  AVDictionaryEntry *compatible_brands = av_dict_get(c->fc->metadata, "compatible_brands", NULL, AV_DICT_MATCH_CASE);
1509 
1510  avio_rb16(pb); /* revision level */
1511  avio_rb32(pb); /* vendor */
1512 
1513  st->codec->channels = avio_rb16(pb); /* channel count */
1514  st->codec->bits_per_coded_sample = avio_rb16(pb); /* sample size */
1515  av_dlog(c->fc, "audio channels %d\n", st->codec->channels);
1516 
1517  sc->audio_cid = avio_rb16(pb);
1518  avio_rb16(pb); /* packet size = 0 */
1519 
1520  st->codec->sample_rate = ((avio_rb32(pb) >> 16));
1521 
1522  // Read QT version 1 fields. In version 0 these do not exist.
1523  av_dlog(c->fc, "version =%d, isom =%d\n", version, c->isom);
1524  if (!c->isom ||
1525  (compatible_brands && strstr(compatible_brands->value, "qt "))) {
1526 
1527  if (version == 1) {
1528  sc->samples_per_frame = avio_rb32(pb);
1529  avio_rb32(pb); /* bytes per packet */
1530  sc->bytes_per_frame = avio_rb32(pb);
1531  avio_rb32(pb); /* bytes per sample */
1532  } else if (version == 2) {
1533  avio_rb32(pb); /* sizeof struct only */
1535  st->codec->channels = avio_rb32(pb);
1536  avio_rb32(pb); /* always 0x7F000000 */
1538 
1539  flags = avio_rb32(pb); /* lpcm format specific flag */
1540  sc->bytes_per_frame = avio_rb32(pb);
1541  sc->samples_per_frame = avio_rb32(pb);
1542  if (st->codec->codec_tag == MKTAG('l','p','c','m'))
1543  st->codec->codec_id =
1545  flags);
1546  }
1547  }
1548 
1549  switch (st->codec->codec_id) {
1550  case AV_CODEC_ID_PCM_S8:
1551  case AV_CODEC_ID_PCM_U8:
1552  if (st->codec->bits_per_coded_sample == 16)
1554  break;
1555  case AV_CODEC_ID_PCM_S16LE:
1556  case AV_CODEC_ID_PCM_S16BE:
1557  if (st->codec->bits_per_coded_sample == 8)
1559  else if (st->codec->bits_per_coded_sample == 24)
1560  st->codec->codec_id =
1563  else if (st->codec->bits_per_coded_sample == 32)
1564  st->codec->codec_id =
1567  break;
1568  /* set values for old format before stsd version 1 appeared */
1569  case AV_CODEC_ID_MACE3:
1570  sc->samples_per_frame = 6;
1571  sc->bytes_per_frame = 2 * st->codec->channels;
1572  break;
1573  case AV_CODEC_ID_MACE6:
1574  sc->samples_per_frame = 6;
1575  sc->bytes_per_frame = 1 * st->codec->channels;
1576  break;
1578  sc->samples_per_frame = 64;
1579  sc->bytes_per_frame = 34 * st->codec->channels;
1580  break;
1581  case AV_CODEC_ID_GSM:
1582  sc->samples_per_frame = 160;
1583  sc->bytes_per_frame = 33;
1584  break;
1585  default:
1586  break;
1587  }
1588 
1589  bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
1590  if (bits_per_sample) {
1591  st->codec->bits_per_coded_sample = bits_per_sample;
1592  sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
1593  }
1594 }
1595 
1597  AVStream *st, MOVStreamContext *sc,
1598  int64_t size)
1599 {
1600  // ttxt stsd contains display flags, justification, background
1601  // color, fonts, and default styles, so fake an atom to read it
1602  MOVAtom fake_atom = { .size = size };
1603  // mp4s contains a regular esds atom
1604  if (st->codec->codec_tag != AV_RL32("mp4s"))
1605  mov_read_glbl(c, pb, fake_atom);
1606  st->codec->width = sc->width;
1607  st->codec->height = sc->height;
1608 }
1609 
1610 static uint32_t yuv_to_rgba(uint32_t ycbcr)
1611 {
1612  uint8_t r, g, b;
1613  int y, cb, cr;
1614 
1615  y = (ycbcr >> 16) & 0xFF;
1616  cr = (ycbcr >> 8) & 0xFF;
1617  cb = ycbcr & 0xFF;
1618 
1619  b = av_clip_uint8(1.164 * (y - 16) + 2.018 * (cb - 128));
1620  g = av_clip_uint8(1.164 * (y - 16) - 0.813 * (cr - 128) - 0.391 * (cb - 128));
1621  r = av_clip_uint8(1.164 * (y - 16) + 1.596 * (cr - 128));
1622 
1623  return (r << 16) | (g << 8) | b;
1624 }
1625 
1627 {
1628  char buf[256] = {0};
1629  uint8_t *src = st->codec->extradata;
1630  int i;
1631 
1632  if (st->codec->extradata_size != 64)
1633  return 0;
1634 
1635  if (st->codec->width > 0 && st->codec->height > 0)
1636  snprintf(buf, sizeof(buf), "size: %dx%d\n",
1637  st->codec->width, st->codec->height);
1638  av_strlcat(buf, "palette: ", sizeof(buf));
1639 
1640  for (i = 0; i < 16; i++) {
1641  uint32_t yuv = AV_RB32(src + i * 4);
1642  uint32_t rgba = yuv_to_rgba(yuv);
1643 
1644  av_strlcatf(buf, sizeof(buf), "%06"PRIx32"%s", rgba, i != 15 ? ", " : "");
1645  }
1646 
1647  if (av_strlcat(buf, "\n", sizeof(buf)) >= sizeof(buf))
1648  return 0;
1649 
1650  av_freep(&st->codec->extradata);
1651  st->codec->extradata_size = 0;
1653  if (!st->codec->extradata)
1654  return AVERROR(ENOMEM);
1655  st->codec->extradata_size = strlen(buf);
1656  memcpy(st->codec->extradata, buf, st->codec->extradata_size);
1657 
1658  return 0;
1659 }
1660 
1662  AVStream *st, MOVStreamContext *sc,
1663  int64_t size)
1664 {
1665  if (st->codec->codec_tag == MKTAG('t','m','c','d')) {
1666  if ((int)size != size || ff_get_extradata(st->codec, pb, size) < 0)
1667  return AVERROR(ENOMEM);
1668  if (size > 16) {
1669  MOVStreamContext *tmcd_ctx = st->priv_data;
1670  int val;
1671  val = AV_RB32(st->codec->extradata + 4);
1672  tmcd_ctx->tmcd_flags = val;
1673  if (val & 1)
1675  st->codec->time_base.den = st->codec->extradata[16]; /* number of frame */
1676  st->codec->time_base.num = 1;
1677  /* adjust for per frame dur in counter mode */
1678  if (tmcd_ctx->tmcd_flags & 0x0008) {
1679  int timescale = AV_RB32(st->codec->extradata + 8);
1680  int framedur = AV_RB32(st->codec->extradata + 12);
1681  st->codec->time_base.den *= timescale;
1682  st->codec->time_base.num *= framedur;
1683  }
1684  if (size > 30) {
1685  uint32_t len = AV_RB32(st->codec->extradata + 18); /* name atom length */
1686  uint32_t format = AV_RB32(st->codec->extradata + 22);
1687  if (format == AV_RB32("name") && (int64_t)size >= (int64_t)len + 18) {
1688  uint16_t str_size = AV_RB16(st->codec->extradata + 26); /* string length */
1689  if (str_size > 0 && size >= (int)str_size + 26) {
1690  char *reel_name = av_malloc(str_size + 1);
1691  if (!reel_name)
1692  return AVERROR(ENOMEM);
1693  memcpy(reel_name, st->codec->extradata + 30, str_size);
1694  reel_name[str_size] = 0; /* Add null terminator */
1695  /* don't add reel_name if emtpy string */
1696  if (*reel_name == 0) {
1697  av_free(reel_name);
1698  } else {
1699  av_dict_set(&st->metadata, "reel_name", reel_name, AV_DICT_DONT_STRDUP_VAL);
1700  }
1701  }
1702  }
1703  }
1704  }
1705  } else {
1706  /* other codec type, just skip (rtp, mp4s ...) */
1707  avio_skip(pb, size);
1708  }
1709  return 0;
1710 }
1711 
1713  AVStream *st, MOVStreamContext *sc)
1714 {
1715  if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
1716  !st->codec->sample_rate && sc->time_scale > 1)
1717  st->codec->sample_rate = sc->time_scale;
1718 
1719  /* special codec parameters handling */
1720  switch (st->codec->codec_id) {
1721 #if CONFIG_DV_DEMUXER
1722  case AV_CODEC_ID_DVAUDIO:
1725  if (!c->dv_demux) {
1726  av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
1727  return AVERROR(ENOMEM);
1728  }
1729  sc->dv_audio_container = 1;
1731  break;
1732 #endif
1733  /* no ifdef since parameters are always those */
1734  case AV_CODEC_ID_QCELP:
1735  st->codec->channels = 1;
1736  // force sample rate for qcelp when not stored in mov
1737  if (st->codec->codec_tag != MKTAG('Q','c','l','p'))
1738  st->codec->sample_rate = 8000;
1739  // FIXME: Why is the following needed for some files?
1740  sc->samples_per_frame = 160;
1741  if (!sc->bytes_per_frame)
1742  sc->bytes_per_frame = 35;
1743  break;
1744  case AV_CODEC_ID_AMR_NB:
1745  st->codec->channels = 1;
1746  /* force sample rate for amr, stsd in 3gp does not store sample rate */
1747  st->codec->sample_rate = 8000;
1748  break;
1749  case AV_CODEC_ID_AMR_WB:
1750  st->codec->channels = 1;
1751  st->codec->sample_rate = 16000;
1752  break;
1753  case AV_CODEC_ID_MP2:
1754  case AV_CODEC_ID_MP3:
1755  /* force type after stsd for m1a hdlr */
1758  break;
1759  case AV_CODEC_ID_GSM:
1760  case AV_CODEC_ID_ADPCM_MS:
1762  case AV_CODEC_ID_ILBC:
1763  case AV_CODEC_ID_MACE3:
1764  case AV_CODEC_ID_MACE6:
1765  case AV_CODEC_ID_QDM2:
1766  st->codec->block_align = sc->bytes_per_frame;
1767  break;
1768  case AV_CODEC_ID_ALAC:
1769  if (st->codec->extradata_size == 36) {
1770  st->codec->channels = AV_RB8 (st->codec->extradata + 21);
1771  st->codec->sample_rate = AV_RB32(st->codec->extradata + 32);
1772  }
1773  break;
1774  case AV_CODEC_ID_AC3:
1775  case AV_CODEC_ID_EAC3:
1777  case AV_CODEC_ID_VC1:
1779  break;
1780  default:
1781  break;
1782  }
1783  return 0;
1784 }
1785 
1787  int codec_tag, int format,
1788  int64_t size)
1789 {
1790  int video_codec_id = ff_codec_get_id(ff_codec_movvideo_tags, format);
1791 
1792  if (codec_tag &&
1793  (codec_tag != format &&
1794  (c->fc->video_codec_id ? video_codec_id != c->fc->video_codec_id
1795  : codec_tag != MKTAG('j','p','e','g')))) {
1796  /* Multiple fourcc, we skip JPEG. This is not correct, we should
1797  * export it as a separate AVStream but this needs a few changes
1798  * in the MOV demuxer, patch welcome. */
1799 
1800  av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n");
1801  avio_skip(pb, size);
1802  return 1;
1803  }
1804  if ( codec_tag == AV_RL32("avc1") ||
1805  codec_tag == AV_RL32("hvc1") ||
1806  codec_tag == AV_RL32("hev1")
1807  )
1808  av_log(c->fc, AV_LOG_WARNING, "Concatenated H.264 or H.265 might not play correctly.\n");
1809 
1810  return 0;
1811 }
1812 
1814 {
1815  AVStream *st;
1816  MOVStreamContext *sc;
1817  int pseudo_stream_id;
1818 
1819  if (c->fc->nb_streams < 1)
1820  return 0;
1821  st = c->fc->streams[c->fc->nb_streams-1];
1822  sc = st->priv_data;
1823 
1824  for (pseudo_stream_id = 0;
1825  pseudo_stream_id < entries && !pb->eof_reached;
1826  pseudo_stream_id++) {
1827  //Parsing Sample description table
1828  enum AVCodecID id;
1829  int ret, dref_id = 1;
1830  MOVAtom a = { AV_RL32("stsd") };
1831  int64_t start_pos = avio_tell(pb);
1832  int64_t size = avio_rb32(pb); /* size */
1833  uint32_t format = avio_rl32(pb); /* data format */
1834 
1835  if (size >= 16) {
1836  avio_rb32(pb); /* reserved */
1837  avio_rb16(pb); /* reserved */
1838  dref_id = avio_rb16(pb);
1839  }else if (size <= 7){
1840  av_log(c->fc, AV_LOG_ERROR, "invalid size %"PRId64" in stsd\n", size);
1841  return AVERROR_INVALIDDATA;
1842  }
1843 
1844  if (mov_skip_multiple_stsd(c, pb, st->codec->codec_tag, format,
1845  size - (avio_tell(pb) - start_pos)))
1846  continue;
1847 
1848  sc->pseudo_stream_id = st->codec->codec_tag ? -1 : pseudo_stream_id;
1849  sc->dref_id= dref_id;
1850 
1851  id = mov_codec_id(st, format);
1852 
1853  av_dlog(c->fc, "size=%"PRId64" 4CC= %c%c%c%c codec_type=%d\n", size,
1854  (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff,
1855  (format >> 24) & 0xff, st->codec->codec_type);
1856 
1857  if (st->codec->codec_type==AVMEDIA_TYPE_VIDEO) {
1858  st->codec->codec_id = id;
1859  mov_parse_stsd_video(c, pb, st, sc);
1860  } else if (st->codec->codec_type==AVMEDIA_TYPE_AUDIO) {
1861  st->codec->codec_id = id;
1862  mov_parse_stsd_audio(c, pb, st, sc);
1863  } else if (st->codec->codec_type==AVMEDIA_TYPE_SUBTITLE){
1864  st->codec->codec_id = id;
1865  mov_parse_stsd_subtitle(c, pb, st, sc,
1866  size - (avio_tell(pb) - start_pos));
1867  } else {
1868  ret = mov_parse_stsd_data(c, pb, st, sc,
1869  size - (avio_tell(pb) - start_pos));
1870  if (ret < 0)
1871  return ret;
1872  }
1873  /* this will read extra atoms at the end (wave, alac, damr, avcC, hvcC, SMI ...) */
1874  a.size = size - (avio_tell(pb) - start_pos);
1875  if (a.size > 8) {
1876  if ((ret = mov_read_default(c, pb, a)) < 0)
1877  return ret;
1878  } else if (a.size > 0)
1879  avio_skip(pb, a.size);
1880  }
1881 
1882  if (pb->eof_reached)
1883  return AVERROR_EOF;
1884 
1885  return mov_finalize_stsd_codec(c, pb, st, sc);
1886 }
1887 
1889 {
1890  int entries;
1891 
1892  avio_r8(pb); /* version */
1893  avio_rb24(pb); /* flags */
1894  entries = avio_rb32(pb);
1895 
1896  return ff_mov_read_stsd_entries(c, pb, entries);
1897 }
1898 
1900 {
1901  AVStream *st;
1902  MOVStreamContext *sc;
1903  unsigned int i, entries;
1904 
1905  if (c->fc->nb_streams < 1)
1906  return 0;
1907  st = c->fc->streams[c->fc->nb_streams-1];
1908  sc = st->priv_data;
1909 
1910  avio_r8(pb); /* version */
1911  avio_rb24(pb); /* flags */
1912 
1913  entries = avio_rb32(pb);
1914 
1915  av_dlog(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
1916 
1917  if (!entries)
1918  return 0;
1919  if (sc->stsc_data)
1920  av_log(c->fc, AV_LOG_WARNING, "Duplicated STSC atom\n");
1921  av_free(sc->stsc_data);
1922  sc->stsc_count = 0;
1923  sc->stsc_data = av_malloc_array(entries, sizeof(*sc->stsc_data));
1924  if (!sc->stsc_data)
1925  return AVERROR(ENOMEM);
1926 
1927  for (i = 0; i < entries && !pb->eof_reached; i++) {
1928  sc->stsc_data[i].first = avio_rb32(pb);
1929  sc->stsc_data[i].count = avio_rb32(pb);
1930  sc->stsc_data[i].id = avio_rb32(pb);
1931  }
1932 
1933  sc->stsc_count = i;
1934 
1935  if (pb->eof_reached)
1936  return AVERROR_EOF;
1937 
1938  return 0;
1939 }
1940 
1942 {
1943  AVStream *st;
1944  MOVStreamContext *sc;
1945  unsigned i, entries;
1946 
1947  if (c->fc->nb_streams < 1)
1948  return 0;
1949  st = c->fc->streams[c->fc->nb_streams-1];
1950  sc = st->priv_data;
1951 
1952  avio_rb32(pb); // version + flags
1953 
1954  entries = avio_rb32(pb);
1955  if (sc->stps_data)
1956  av_log(c->fc, AV_LOG_WARNING, "Duplicated STPS atom\n");
1957  av_free(sc->stps_data);
1958  sc->stps_count = 0;
1959  sc->stps_data = av_malloc_array(entries, sizeof(*sc->stps_data));
1960  if (!sc->stps_data)
1961  return AVERROR(ENOMEM);
1962 
1963  for (i = 0; i < entries && !pb->eof_reached; i++) {
1964  sc->stps_data[i] = avio_rb32(pb);
1965  //av_dlog(c->fc, "stps %d\n", sc->stps_data[i]);
1966  }
1967 
1968  sc->stps_count = i;
1969 
1970  if (pb->eof_reached)
1971  return AVERROR_EOF;
1972 
1973  return 0;
1974 }
1975 
1977 {
1978  AVStream *st;
1979  MOVStreamContext *sc;
1980  unsigned int i, entries;
1981 
1982  if (c->fc->nb_streams < 1)
1983  return 0;
1984  st = c->fc->streams[c->fc->nb_streams-1];
1985  sc = st->priv_data;
1986 
1987  avio_r8(pb); /* version */
1988  avio_rb24(pb); /* flags */
1989 
1990  entries = avio_rb32(pb);
1991 
1992  av_dlog(c->fc, "keyframe_count = %d\n", entries);
1993 
1994  if (!entries)
1995  {
1996  sc->keyframe_absent = 1;
1997  if (!st->need_parsing && st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
1999  return 0;
2000  }
2001  if (sc->keyframes)
2002  av_log(c->fc, AV_LOG_WARNING, "Duplicated STSS atom\n");
2003  if (entries >= UINT_MAX / sizeof(int))
2004  return AVERROR_INVALIDDATA;
2005  av_freep(&sc->keyframes);
2006  sc->keyframe_count = 0;
2007  sc->keyframes = av_malloc_array(entries, sizeof(*sc->keyframes));
2008  if (!sc->keyframes)
2009  return AVERROR(ENOMEM);
2010 
2011  for (i = 0; i < entries && !pb->eof_reached; i++) {
2012  sc->keyframes[i] = avio_rb32(pb);
2013  //av_dlog(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
2014  }
2015 
2016  sc->keyframe_count = i;
2017 
2018  if (pb->eof_reached)
2019  return AVERROR_EOF;
2020 
2021  return 0;
2022 }
2023 
2025 {
2026  AVStream *st;
2027  MOVStreamContext *sc;
2028  unsigned int i, entries, sample_size, field_size, num_bytes;
2029  GetBitContext gb;
2030  unsigned char* buf;
2031 
2032  if (c->fc->nb_streams < 1)
2033  return 0;
2034  st = c->fc->streams[c->fc->nb_streams-1];
2035  sc = st->priv_data;
2036 
2037  avio_r8(pb); /* version */
2038  avio_rb24(pb); /* flags */
2039 
2040  if (atom.type == MKTAG('s','t','s','z')) {
2041  sample_size = avio_rb32(pb);
2042  if (!sc->sample_size) /* do not overwrite value computed in stsd */
2043  sc->sample_size = sample_size;
2044  sc->stsz_sample_size = sample_size;
2045  field_size = 32;
2046  } else {
2047  sample_size = 0;
2048  avio_rb24(pb); /* reserved */
2049  field_size = avio_r8(pb);
2050  }
2051  entries = avio_rb32(pb);
2052 
2053  av_dlog(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, entries);
2054 
2055  sc->sample_count = entries;
2056  if (sample_size)
2057  return 0;
2058 
2059  if (field_size != 4 && field_size != 8 && field_size != 16 && field_size != 32) {
2060  av_log(c->fc, AV_LOG_ERROR, "Invalid sample field size %d\n", field_size);
2061  return AVERROR_INVALIDDATA;
2062  }
2063 
2064  if (!entries)
2065  return 0;
2066  if (entries >= (UINT_MAX - 4) / field_size)
2067  return AVERROR_INVALIDDATA;
2068  if (sc->sample_sizes)
2069  av_log(c->fc, AV_LOG_WARNING, "Duplicated STSZ atom\n");
2070  av_free(sc->sample_sizes);
2071  sc->sample_count = 0;
2072  sc->sample_sizes = av_malloc_array(entries, sizeof(*sc->sample_sizes));
2073  if (!sc->sample_sizes)
2074  return AVERROR(ENOMEM);
2075 
2076  num_bytes = (entries*field_size+4)>>3;
2077 
2078  buf = av_malloc(num_bytes+FF_INPUT_BUFFER_PADDING_SIZE);
2079  if (!buf) {
2080  av_freep(&sc->sample_sizes);
2081  return AVERROR(ENOMEM);
2082  }
2083 
2084  if (avio_read(pb, buf, num_bytes) < num_bytes) {
2085  av_freep(&sc->sample_sizes);
2086  av_free(buf);
2087  return AVERROR_INVALIDDATA;
2088  }
2089 
2090  init_get_bits(&gb, buf, 8*num_bytes);
2091 
2092  for (i = 0; i < entries && !pb->eof_reached; i++) {
2093  sc->sample_sizes[i] = get_bits_long(&gb, field_size);
2094  sc->data_size += sc->sample_sizes[i];
2095  }
2096 
2097  sc->sample_count = i;
2098 
2099  if (pb->eof_reached)
2100  return AVERROR_EOF;
2101 
2102  av_free(buf);
2103  return 0;
2104 }
2105 
2107 {
2108  AVStream *st;
2109  MOVStreamContext *sc;
2110  unsigned int i, entries;
2111  int64_t duration=0;
2112  int64_t total_sample_count=0;
2113 
2114  if (c->fc->nb_streams < 1)
2115  return 0;
2116  st = c->fc->streams[c->fc->nb_streams-1];
2117  sc = st->priv_data;
2118 
2119  avio_r8(pb); /* version */
2120  avio_rb24(pb); /* flags */
2121  entries = avio_rb32(pb);
2122 
2123  av_dlog(c->fc, "track[%i].stts.entries = %i\n",
2124  c->fc->nb_streams-1, entries);
2125 
2126  if (sc->stts_data)
2127  av_log(c->fc, AV_LOG_WARNING, "Duplicated STTS atom\n");
2128  av_free(sc->stts_data);
2129  sc->stts_count = 0;
2130  sc->stts_data = av_malloc_array(entries, sizeof(*sc->stts_data));
2131  if (!sc->stts_data)
2132  return AVERROR(ENOMEM);
2133 
2134  for (i = 0; i < entries && !pb->eof_reached; i++) {
2135  int sample_duration;
2136  int sample_count;
2137 
2138  sample_count=avio_rb32(pb);
2139  sample_duration = avio_rb32(pb);
2140 
2141  /* sample_duration < 0 is invalid based on the spec */
2142  if (sample_duration < 0) {
2143  av_log(c->fc, AV_LOG_ERROR, "Invalid SampleDelta %d in STTS, at %d st:%d\n",
2144  sample_duration, i, c->fc->nb_streams-1);
2145  sample_duration = 1;
2146  }
2147  if (sample_count < 0) {
2148  av_log(c->fc, AV_LOG_ERROR, "Invalid sample_count=%d\n", sample_count);
2149  return AVERROR_INVALIDDATA;
2150  }
2151  sc->stts_data[i].count= sample_count;
2152  sc->stts_data[i].duration= sample_duration;
2153 
2154  av_dlog(c->fc, "sample_count=%d, sample_duration=%d\n",
2155  sample_count, sample_duration);
2156 
2157  if ( i+1 == entries
2158  && i
2159  && sample_count == 1
2160  && total_sample_count > 100
2161  && sample_duration/10 > duration / total_sample_count)
2162  sample_duration = duration / total_sample_count;
2163  duration+=(int64_t)sample_duration*sample_count;
2164  total_sample_count+=sample_count;
2165  }
2166 
2167  sc->stts_count = i;
2168 
2169  sc->duration_for_fps += duration;
2170  sc->nb_frames_for_fps += total_sample_count;
2171 
2172  if (pb->eof_reached)
2173  return AVERROR_EOF;
2174 
2175  st->nb_frames= total_sample_count;
2176  if (duration)
2177  st->duration= duration;
2178  sc->track_end = duration;
2179  return 0;
2180 }
2181 
2183 {
2184  if (duration < 0) {
2185  sc->dts_shift = FFMAX(sc->dts_shift, -duration);
2186  }
2187 }
2188 
2190 {
2191  AVStream *st;
2192  MOVStreamContext *sc;
2193  unsigned int i, entries;
2194 
2195  if (c->fc->nb_streams < 1)
2196  return 0;
2197  st = c->fc->streams[c->fc->nb_streams-1];
2198  sc = st->priv_data;
2199 
2200  avio_r8(pb); /* version */
2201  avio_rb24(pb); /* flags */
2202  entries = avio_rb32(pb);
2203 
2204  av_dlog(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
2205 
2206  if (!entries)
2207  return 0;
2208  if (entries >= UINT_MAX / sizeof(*sc->ctts_data))
2209  return AVERROR_INVALIDDATA;
2210  sc->ctts_data = av_malloc(entries * sizeof(*sc->ctts_data));
2211  if (!sc->ctts_data)
2212  return AVERROR(ENOMEM);
2213 
2214  for (i = 0; i < entries && !pb->eof_reached; i++) {
2215  int count =avio_rb32(pb);
2216  int duration =avio_rb32(pb);
2217 
2218  sc->ctts_data[i].count = count;
2219  sc->ctts_data[i].duration= duration;
2220 
2221  av_dlog(c->fc, "count=%d, duration=%d\n",
2222  count, duration);
2223 
2224  if (FFABS(duration) > (1<<28) && i+2<entries) {
2225  av_log(c->fc, AV_LOG_WARNING, "CTTS invalid\n");
2226  av_freep(&sc->ctts_data);
2227  sc->ctts_count = 0;
2228  return 0;
2229  }
2230 
2231  if (i+2<entries)
2232  mov_update_dts_shift(sc, duration);
2233  }
2234 
2235  sc->ctts_count = i;
2236 
2237  if (pb->eof_reached)
2238  return AVERROR_EOF;
2239 
2240  av_dlog(c->fc, "dts shift %d\n", sc->dts_shift);
2241 
2242  return 0;
2243 }
2244 
2246 {
2247  AVStream *st;
2248  MOVStreamContext *sc;
2249  unsigned int i, entries;
2250  uint8_t version;
2251  uint32_t grouping_type;
2252 
2253  if (c->fc->nb_streams < 1)
2254  return 0;
2255  st = c->fc->streams[c->fc->nb_streams-1];
2256  sc = st->priv_data;
2257 
2258  version = avio_r8(pb); /* version */
2259  avio_rb24(pb); /* flags */
2260  grouping_type = avio_rl32(pb);
2261  if (grouping_type != MKTAG( 'r','a','p',' '))
2262  return 0; /* only support 'rap ' grouping */
2263  if (version == 1)
2264  avio_rb32(pb); /* grouping_type_parameter */
2265 
2266  entries = avio_rb32(pb);
2267  if (!entries)
2268  return 0;
2269  if (sc->rap_group)
2270  av_log(c->fc, AV_LOG_WARNING, "Duplicated SBGP atom\n");
2271  av_free(sc->rap_group);
2272  sc->rap_group_count = 0;
2273  sc->rap_group = av_malloc_array(entries, sizeof(*sc->rap_group));
2274  if (!sc->rap_group)
2275  return AVERROR(ENOMEM);
2276 
2277  for (i = 0; i < entries && !pb->eof_reached; i++) {
2278  sc->rap_group[i].count = avio_rb32(pb); /* sample_count */
2279  sc->rap_group[i].index = avio_rb32(pb); /* group_description_index */
2280  }
2281 
2282  sc->rap_group_count = i;
2283 
2284  return pb->eof_reached ? AVERROR_EOF : 0;
2285 }
2286 
2287 static void mov_build_index(MOVContext *mov, AVStream *st)
2288 {
2289  MOVStreamContext *sc = st->priv_data;
2290  int64_t current_offset;
2291  int64_t current_dts = 0;
2292  unsigned int stts_index = 0;
2293  unsigned int stsc_index = 0;
2294  unsigned int stss_index = 0;
2295  unsigned int stps_index = 0;
2296  unsigned int i, j;
2297  uint64_t stream_size = 0;
2298 
2299  if (sc->elst_count) {
2300  int i, edit_start_index = 0, unsupported = 0;
2301  int64_t empty_duration = 0; // empty duration of the first edit list entry
2302  int64_t start_time = 0; // start time of the media
2303 
2304  for (i = 0; i < sc->elst_count; i++) {
2305  const MOVElst *e = &sc->elst_data[i];
2306  if (i == 0 && e->time == -1) {
2307  /* if empty, the first entry is the start time of the stream
2308  * relative to the presentation itself */
2309  empty_duration = e->duration;
2310  edit_start_index = 1;
2311  } else if (i == edit_start_index && e->time >= 0) {
2312  start_time = e->time;
2313  } else
2314  unsupported = 1;
2315  }
2316  if (unsupported)
2317  av_log(mov->fc, AV_LOG_WARNING, "multiple edit list entries, "
2318  "a/v desync might occur, patch welcome\n");
2319 
2320  /* adjust first dts according to edit list */
2321  if ((empty_duration || start_time) && mov->time_scale > 0) {
2322  if (empty_duration)
2323  empty_duration = av_rescale(empty_duration, sc->time_scale, mov->time_scale);
2324  sc->time_offset = start_time - empty_duration;
2325  current_dts = -sc->time_offset;
2326  if (sc->ctts_count>0 && sc->stts_count>0 &&
2327  sc->ctts_data[0].duration / FFMAX(sc->stts_data[0].duration, 1) > 16) {
2328  /* more than 16 frames delay, dts are likely wrong
2329  this happens with files created by iMovie */
2330  sc->wrong_dts = 1;
2331  st->codec->has_b_frames = 1;
2332  }
2333  }
2334  }
2335 
2336  /* only use old uncompressed audio chunk demuxing when stts specifies it */
2337  if (!(st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
2338  sc->stts_count == 1 && sc->stts_data[0].duration == 1)) {
2339  unsigned int current_sample = 0;
2340  unsigned int stts_sample = 0;
2341  unsigned int sample_size;
2342  unsigned int distance = 0;
2343  unsigned int rap_group_index = 0;
2344  unsigned int rap_group_sample = 0;
2345  int rap_group_present = sc->rap_group_count && sc->rap_group;
2346  int key_off = (sc->keyframe_count && sc->keyframes[0] > 0) || (sc->stps_count && sc->stps_data[0] > 0);
2347 
2348  current_dts -= sc->dts_shift;
2349 
2350  if (!sc->sample_count || st->nb_index_entries)
2351  return;
2352  if (sc->sample_count >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries)
2353  return;
2355  st->nb_index_entries + sc->sample_count,
2356  sizeof(*st->index_entries)) < 0) {
2357  st->nb_index_entries = 0;
2358  return;
2359  }
2361 
2362  for (i = 0; i < sc->chunk_count; i++) {
2363  int64_t next_offset = i+1 < sc->chunk_count ? sc->chunk_offsets[i+1] : INT64_MAX;
2364  current_offset = sc->chunk_offsets[i];
2365  while (stsc_index + 1 < sc->stsc_count &&
2366  i + 1 == sc->stsc_data[stsc_index + 1].first)
2367  stsc_index++;
2368 
2369  if (next_offset > current_offset && sc->sample_size>0 && sc->sample_size < sc->stsz_sample_size &&
2370  sc->stsc_data[stsc_index].count * (int64_t)sc->stsz_sample_size > next_offset - current_offset) {
2371  av_log(mov->fc, AV_LOG_WARNING, "STSZ sample size %d invalid (too large), ignoring\n", sc->stsz_sample_size);
2372  sc->stsz_sample_size = sc->sample_size;
2373  }
2374  if (sc->stsz_sample_size>0 && sc->stsz_sample_size < sc->sample_size) {
2375  av_log(mov->fc, AV_LOG_WARNING, "STSZ sample size %d invalid (too small), ignoring\n", sc->stsz_sample_size);
2376  sc->stsz_sample_size = sc->sample_size;
2377  }
2378 
2379  for (j = 0; j < sc->stsc_data[stsc_index].count; j++) {
2380  int keyframe = 0;
2381  if (current_sample >= sc->sample_count) {
2382  av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
2383  return;
2384  }
2385 
2386  if (!sc->keyframe_absent && (!sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index])) {
2387  keyframe = 1;
2388  if (stss_index + 1 < sc->keyframe_count)
2389  stss_index++;
2390  } else if (sc->stps_count && current_sample+key_off == sc->stps_data[stps_index]) {
2391  keyframe = 1;
2392  if (stps_index + 1 < sc->stps_count)
2393  stps_index++;
2394  }
2395  if (rap_group_present && rap_group_index < sc->rap_group_count) {
2396  if (sc->rap_group[rap_group_index].index > 0)
2397  keyframe = 1;
2398  if (++rap_group_sample == sc->rap_group[rap_group_index].count) {
2399  rap_group_sample = 0;
2400  rap_group_index++;
2401  }
2402  }
2403  if (sc->keyframe_absent
2404  && !sc->stps_count
2405  && !rap_group_present
2406  && (st->codec->codec_type == AVMEDIA_TYPE_AUDIO || (i==0 && j==0)))
2407  keyframe = 1;
2408  if (keyframe)
2409  distance = 0;
2410  sample_size = sc->stsz_sample_size > 0 ? sc->stsz_sample_size : sc->sample_sizes[current_sample];
2411  if (sc->pseudo_stream_id == -1 ||
2412  sc->stsc_data[stsc_index].id - 1 == sc->pseudo_stream_id) {
2413  AVIndexEntry *e = &st->index_entries[st->nb_index_entries++];
2414  e->pos = current_offset;
2415  e->timestamp = current_dts;
2416  e->size = sample_size;
2417  e->min_distance = distance;
2418  e->flags = keyframe ? AVINDEX_KEYFRAME : 0;
2419  av_dlog(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
2420  "size %d, distance %d, keyframe %d\n", st->index, current_sample,
2421  current_offset, current_dts, sample_size, distance, keyframe);
2422  if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && st->nb_index_entries < 100)
2423  ff_rfps_add_frame(mov->fc, st, current_dts);
2424  }
2425 
2426  current_offset += sample_size;
2427  stream_size += sample_size;
2428  current_dts += sc->stts_data[stts_index].duration;
2429  distance++;
2430  stts_sample++;
2431  current_sample++;
2432  if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
2433  stts_sample = 0;
2434  stts_index++;
2435  }
2436  }
2437  }
2438  if (st->duration > 0)
2439  st->codec->bit_rate = stream_size*8*sc->time_scale/st->duration;
2440  } else {
2441  unsigned chunk_samples, total = 0;
2442 
2443  // compute total chunk count
2444  for (i = 0; i < sc->stsc_count; i++) {
2445  unsigned count, chunk_count;
2446 
2447  chunk_samples = sc->stsc_data[i].count;
2448  if (i != sc->stsc_count - 1 &&
2449  sc->samples_per_frame && chunk_samples % sc->samples_per_frame) {
2450  av_log(mov->fc, AV_LOG_ERROR, "error unaligned chunk\n");
2451  return;
2452  }
2453 
2454  if (sc->samples_per_frame >= 160) { // gsm
2455  count = chunk_samples / sc->samples_per_frame;
2456  } else if (sc->samples_per_frame > 1) {
2457  unsigned samples = (1024/sc->samples_per_frame)*sc->samples_per_frame;
2458  count = (chunk_samples+samples-1) / samples;
2459  } else {
2460  count = (chunk_samples+1023) / 1024;
2461  }
2462 
2463  if (i < sc->stsc_count - 1)
2464  chunk_count = sc->stsc_data[i+1].first - sc->stsc_data[i].first;
2465  else
2466  chunk_count = sc->chunk_count - (sc->stsc_data[i].first - 1);
2467  total += chunk_count * count;
2468  }
2469 
2470  av_dlog(mov->fc, "chunk count %d\n", total);
2471  if (total >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries)
2472  return;
2474  st->nb_index_entries + total,
2475  sizeof(*st->index_entries)) < 0) {
2476  st->nb_index_entries = 0;
2477  return;
2478  }
2479  st->index_entries_allocated_size = (st->nb_index_entries + total) * sizeof(*st->index_entries);
2480 
2481  // populate index
2482  for (i = 0; i < sc->chunk_count; i++) {
2483  current_offset = sc->chunk_offsets[i];
2484  if (stsc_index + 1 < sc->stsc_count &&
2485  i + 1 == sc->stsc_data[stsc_index + 1].first)
2486  stsc_index++;
2487  chunk_samples = sc->stsc_data[stsc_index].count;
2488 
2489  while (chunk_samples > 0) {
2490  AVIndexEntry *e;
2491  unsigned size, samples;
2492 
2493  if (sc->samples_per_frame >= 160) { // gsm
2494  samples = sc->samples_per_frame;
2495  size = sc->bytes_per_frame;
2496  } else {
2497  if (sc->samples_per_frame > 1) {
2498  samples = FFMIN((1024 / sc->samples_per_frame)*
2499  sc->samples_per_frame, chunk_samples);
2500  size = (samples / sc->samples_per_frame) * sc->bytes_per_frame;
2501  } else {
2502  samples = FFMIN(1024, chunk_samples);
2503  size = samples * sc->sample_size;
2504  }
2505  }
2506 
2507  if (st->nb_index_entries >= total) {
2508  av_log(mov->fc, AV_LOG_ERROR, "wrong chunk count %d\n", total);
2509  return;
2510  }
2511  e = &st->index_entries[st->nb_index_entries++];
2512  e->pos = current_offset;
2513  e->timestamp = current_dts;
2514  e->size = size;
2515  e->min_distance = 0;
2516  e->flags = AVINDEX_KEYFRAME;
2517  av_dlog(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", "
2518  "size %d, duration %d\n", st->index, i, current_offset, current_dts,
2519  size, samples);
2520 
2521  current_offset += size;
2522  current_dts += samples;
2523  chunk_samples -= samples;
2524  }
2525  }
2526  }
2527 }
2528 
2529 static int mov_open_dref(AVIOContext **pb, const char *src, MOVDref *ref,
2530  AVIOInterruptCB *int_cb, int use_absolute_path, AVFormatContext *fc)
2531 {
2532  /* try relative path, we do not try the absolute because it can leak information about our
2533  system to an attacker */
2534  if (ref->nlvl_to > 0 && ref->nlvl_from > 0) {
2535  char filename[1024];
2536  const char *src_path;
2537  int i, l;
2538 
2539  /* find a source dir */
2540  src_path = strrchr(src, '/');
2541  if (src_path)
2542  src_path++;
2543  else
2544  src_path = src;
2545 
2546  /* find a next level down to target */
2547  for (i = 0, l = strlen(ref->path) - 1; l >= 0; l--)
2548  if (ref->path[l] == '/') {
2549  if (i == ref->nlvl_to - 1)
2550  break;
2551  else
2552  i++;
2553  }
2554 
2555  /* compose filename if next level down to target was found */
2556  if (i == ref->nlvl_to - 1 && src_path - src < sizeof(filename)) {
2557  memcpy(filename, src, src_path - src);
2558  filename[src_path - src] = 0;
2559 
2560  for (i = 1; i < ref->nlvl_from; i++)
2561  av_strlcat(filename, "../", 1024);
2562 
2563  av_strlcat(filename, ref->path + l + 1, 1024);
2564 
2565  if (!avio_open2(pb, filename, AVIO_FLAG_READ, int_cb, NULL))
2566  return 0;
2567  }
2568  } else if (use_absolute_path) {
2569  av_log(fc, AV_LOG_WARNING, "Using absolute path on user request, "
2570  "this is a possible security issue\n");
2571  if (!avio_open2(pb, ref->path, AVIO_FLAG_READ, int_cb, NULL))
2572  return 0;
2573  }
2574 
2575  return AVERROR(ENOENT);
2576 }
2577 
2579 {
2580  if (sc->time_scale <= 0) {
2581  av_log(c->fc, AV_LOG_WARNING, "stream %d, timescale not set\n", sc->ffindex);
2582  sc->time_scale = c->time_scale;
2583  if (sc->time_scale <= 0)
2584  sc->time_scale = 1;
2585  }
2586 }
2587 
2589 {
2590  AVStream *st;
2591  MOVStreamContext *sc;
2592  int ret;
2593 
2594  st = avformat_new_stream(c->fc, NULL);
2595  if (!st) return AVERROR(ENOMEM);
2596  st->id = c->fc->nb_streams;
2597  sc = av_mallocz(sizeof(MOVStreamContext));
2598  if (!sc) return AVERROR(ENOMEM);
2599 
2600  st->priv_data = sc;
2602  sc->ffindex = st->index;
2603 
2604  if ((ret = mov_read_default(c, pb, atom)) < 0)
2605  return ret;
2606 
2607  /* sanity checks */
2608  if (sc->chunk_count && (!sc->stts_count || !sc->stsc_count ||
2609  (!sc->sample_size && !sc->sample_count))) {
2610  av_log(c->fc, AV_LOG_ERROR, "stream %d, missing mandatory atoms, broken header\n",
2611  st->index);
2612  return 0;
2613  }
2614 
2615  fix_timescale(c, sc);
2616 
2617  avpriv_set_pts_info(st, 64, 1, sc->time_scale);
2618 
2619  mov_build_index(c, st);
2620 
2621  if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) {
2622  MOVDref *dref = &sc->drefs[sc->dref_id - 1];
2623  if (mov_open_dref(&sc->pb, c->fc->filename, dref, &c->fc->interrupt_callback,
2624  c->use_absolute_path, c->fc) < 0)
2625  av_log(c->fc, AV_LOG_ERROR,
2626  "stream %d, error opening alias: path='%s', dir='%s', "
2627  "filename='%s', volume='%s', nlvl_from=%d, nlvl_to=%d\n",
2628  st->index, dref->path, dref->dir, dref->filename,
2629  dref->volume, dref->nlvl_from, dref->nlvl_to);
2630  } else {
2631  sc->pb = c->fc->pb;
2632  sc->pb_is_copied = 1;
2633  }
2634 
2635  if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2636  if (!st->sample_aspect_ratio.num &&
2637  (st->codec->width != sc->width || st->codec->height != sc->height)) {
2638  st->sample_aspect_ratio = av_d2q(((double)st->codec->height * sc->width) /
2639  ((double)st->codec->width * sc->height), INT_MAX);
2640  }
2641 
2642 #if FF_API_R_FRAME_RATE
2643  if (sc->stts_count == 1 || (sc->stts_count == 2 && sc->stts_data[1].count == 1))
2645  sc->time_scale, sc->stts_data[0].duration, INT_MAX);
2646 #endif
2647  }
2648 
2649  // done for ai5q, ai52, ai55, ai1q, ai12 and ai15.
2650  if (!st->codec->extradata_size && st->codec->codec_id == AV_CODEC_ID_H264 &&
2651  TAG_IS_AVCI(st->codec->codec_tag)) {
2652  ret = ff_generate_avci_extradata(st);
2653  if (ret < 0)
2654  return ret;
2655  }
2656 
2657  switch (st->codec->codec_id) {
2658 #if CONFIG_H261_DECODER
2659  case AV_CODEC_ID_H261:
2660 #endif
2661 #if CONFIG_H263_DECODER
2662  case AV_CODEC_ID_H263:
2663 #endif
2664 #if CONFIG_MPEG4_DECODER
2665  case AV_CODEC_ID_MPEG4:
2666 #endif
2667  st->codec->width = 0; /* let decoder init width/height */
2668  st->codec->height= 0;
2669  break;
2670  }
2671 
2672  /* Do not need those anymore. */
2673  av_freep(&sc->chunk_offsets);
2674  av_freep(&sc->stsc_data);
2675  av_freep(&sc->sample_sizes);
2676  av_freep(&sc->keyframes);
2677  av_freep(&sc->stts_data);
2678  av_freep(&sc->stps_data);
2679  av_freep(&sc->elst_data);
2680  av_freep(&sc->rap_group);
2681 
2682  return 0;
2683 }
2684 
2686 {
2687  int ret;
2688  c->itunes_metadata = 1;
2689  ret = mov_read_default(c, pb, atom);
2690  c->itunes_metadata = 0;
2691  return ret;
2692 }
2693 
2695 {
2696  int64_t end = avio_tell(pb) + size;
2697  uint8_t *key = NULL, *val = NULL;
2698  int i;
2699  AVStream *st;
2700  MOVStreamContext *sc;
2701 
2702  if (c->fc->nb_streams < 1)
2703  return 0;
2704  st = c->fc->streams[c->fc->nb_streams-1];
2705  sc = st->priv_data;
2706 
2707  for (i = 0; i < 2; i++) {
2708  uint8_t **p;
2709  uint32_t len, tag;
2710 
2711  if (end - avio_tell(pb) <= 12)
2712  break;
2713 
2714  len = avio_rb32(pb);
2715  tag = avio_rl32(pb);
2716  avio_skip(pb, 4); // flags
2717 
2718  if (len < 12 || len - 12 > end - avio_tell(pb))
2719  break;
2720  len -= 12;
2721 
2722  if (tag == MKTAG('n', 'a', 'm', 'e'))
2723  p = &key;
2724  else if (tag == MKTAG('d', 'a', 't', 'a') && len > 4) {
2725  avio_skip(pb, 4);
2726  len -= 4;
2727  p = &val;
2728  } else
2729  break;
2730 
2731  *p = av_malloc(len + 1);
2732  if (!*p)
2733  break;
2734  avio_read(pb, *p, len);
2735  (*p)[len] = 0;
2736  }
2737 
2738  if (key && val) {
2739  if (strcmp(key, "iTunSMPB") == 0) {
2740  int priming, remainder, samples;
2741  if(sscanf(val, "%*X %X %X %X", &priming, &remainder, &samples) == 3){
2742  if(priming>0 && priming<16384)
2743  sc->start_pad = priming;
2744  }
2745  }
2746  if (strcmp(key, "cdec") != 0) {
2747  av_dict_set(&c->fc->metadata, key, val,
2749  key = val = NULL;
2750  }
2751  }
2752 
2753  avio_seek(pb, end, SEEK_SET);
2754  av_freep(&key);
2755  av_freep(&val);
2756  return 0;
2757 }
2758 
2760 {
2761  int64_t end = avio_tell(pb) + atom.size;
2762  uint32_t tag, len;
2763 
2764  if (atom.size < 8)
2765  goto fail;
2766 
2767  len = avio_rb32(pb);
2768  tag = avio_rl32(pb);
2769 
2770  if (len > atom.size)
2771  goto fail;
2772 
2773  if (tag == MKTAG('m', 'e', 'a', 'n') && len > 12) {
2774  uint8_t domain[128];
2775  int domain_len;
2776 
2777  avio_skip(pb, 4); // flags
2778  len -= 12;
2779 
2780  domain_len = avio_get_str(pb, len, domain, sizeof(domain));
2781  avio_skip(pb, len - domain_len);
2782  return mov_read_custom_2plus(c, pb, end - avio_tell(pb));
2783  }
2784 
2785 fail:
2786  av_log(c->fc, AV_LOG_VERBOSE,
2787  "Unhandled or malformed custom metadata of size %"PRId64"\n", atom.size);
2788  return 0;
2789 }
2790 
2792 {
2793  while (atom.size > 8) {
2794  uint32_t tag = avio_rl32(pb);
2795  atom.size -= 4;
2796  if (tag == MKTAG('h','d','l','r')) {
2797  avio_seek(pb, -8, SEEK_CUR);
2798  atom.size += 8;
2799  return mov_read_default(c, pb, atom);
2800  }
2801  }
2802  return 0;
2803 }
2804 
2806 {
2807  int i;
2808  int width;
2809  int height;
2810  int display_matrix[3][3];
2811  AVStream *st;
2812  MOVStreamContext *sc;
2813  int version;
2814  int flags;
2815 
2816  if (c->fc->nb_streams < 1)
2817  return 0;
2818  st = c->fc->streams[c->fc->nb_streams-1];
2819  sc = st->priv_data;
2820 
2821  version = avio_r8(pb);
2822  flags = avio_rb24(pb);
2824 
2825  if (version == 1) {
2826  avio_rb64(pb);
2827  avio_rb64(pb);
2828  } else {
2829  avio_rb32(pb); /* creation time */
2830  avio_rb32(pb); /* modification time */
2831  }
2832  st->id = (int)avio_rb32(pb); /* track id (NOT 0 !)*/
2833  avio_rb32(pb); /* reserved */
2834 
2835  /* highlevel (considering edits) duration in movie timebase */
2836  (version == 1) ? avio_rb64(pb) : avio_rb32(pb);
2837  avio_rb32(pb); /* reserved */
2838  avio_rb32(pb); /* reserved */
2839 
2840  avio_rb16(pb); /* layer */
2841  avio_rb16(pb); /* alternate group */
2842  avio_rb16(pb); /* volume */
2843  avio_rb16(pb); /* reserved */
2844 
2845  //read in the display matrix (outlined in ISO 14496-12, Section 6.2.2)
2846  // they're kept in fixed point format through all calculations
2847  // save u,v,z to store the whole matrix in the AV_PKT_DATA_DISPLAYMATRIX
2848  // side data, but the scale factor is not needed to calculate aspect ratio
2849  for (i = 0; i < 3; i++) {
2850  display_matrix[i][0] = avio_rb32(pb); // 16.16 fixed point
2851  display_matrix[i][1] = avio_rb32(pb); // 16.16 fixed point
2852  display_matrix[i][2] = avio_rb32(pb); // 2.30 fixed point
2853  }
2854 
2855  width = avio_rb32(pb); // 16.16 fixed point track width
2856  height = avio_rb32(pb); // 16.16 fixed point track height
2857  sc->width = width >> 16;
2858  sc->height = height >> 16;
2859 
2860  // save the matrix and add rotate metadata when it is not the default
2861  // identity
2862  if (display_matrix[0][0] != (1 << 16) ||
2863  display_matrix[1][1] != (1 << 16) ||
2864  display_matrix[2][2] != (1 << 30) ||
2865  display_matrix[0][1] || display_matrix[0][2] ||
2866  display_matrix[1][0] || display_matrix[1][2] ||
2867  display_matrix[2][0] || display_matrix[2][1]) {
2868  int i, j;
2869  double rotate;
2870 
2871  av_freep(&sc->display_matrix);
2872  sc->display_matrix = av_malloc(sizeof(int32_t) * 9);
2873  if (!sc->display_matrix)
2874  return AVERROR(ENOMEM);
2875 
2876  for (i = 0; i < 3; i++)
2877  for (j = 0; j < 3; j++)
2878  sc->display_matrix[i * 3 + j] = display_matrix[j][i];
2879 
2881  if (!isnan(rotate)) {
2882  char rotate_buf[64];
2883  rotate = -rotate;
2884  if (rotate < 0) // for backward compatibility
2885  rotate += 360;
2886  snprintf(rotate_buf, sizeof(rotate_buf), "%g", rotate);
2887  av_dict_set(&st->metadata, "rotate", rotate_buf, 0);
2888  }
2889  }
2890 
2891  // transform the display width/height according to the matrix
2892  // to keep the same scale, use [width height 1<<16]
2893  if (width && height && sc->display_matrix) {
2894  double disp_transform[2];
2895 
2896 #define SQR(a) ((a)*(double)(a))
2897  for (i = 0; i < 2; i++)
2898  disp_transform[i] = sqrt(SQR(display_matrix[i][0]) + SQR(display_matrix[i][1]));
2899 
2900  if (disp_transform[0] > 0 && disp_transform[1] > 0 &&
2901  disp_transform[0] < (1<<24) && disp_transform[1] < (1<<24) &&
2902  fabs((disp_transform[0] / disp_transform[1]) - 1.0) > 0.01)
2904  disp_transform[0] / disp_transform[1],
2905  INT_MAX);
2906  }
2907  return 0;
2908 }
2909 
2911 {
2912  MOVFragment *frag = &c->fragment;
2913  MOVTrackExt *trex = NULL;
2914  MOVFragmentIndex* index = NULL;
2915  int flags, track_id, i;
2916 
2917  avio_r8(pb); /* version */
2918  flags = avio_rb24(pb);
2919 
2920  track_id = avio_rb32(pb);
2921  if (!track_id)
2922  return AVERROR_INVALIDDATA;
2923  frag->track_id = track_id;
2924  for (i = 0; i < c->trex_count; i++)
2925  if (c->trex_data[i].track_id == frag->track_id) {
2926  trex = &c->trex_data[i];
2927  break;
2928  }
2929  if (!trex) {
2930  av_log(c->fc, AV_LOG_ERROR, "could not find corresponding trex\n");
2931  return AVERROR_INVALIDDATA;
2932  }
2933  for (i = 0; i < c->fragment_index_count; i++) {
2934  MOVFragmentIndex* candidate = c->fragment_index_data[i];
2935  if (candidate->track_id == frag->track_id) {
2936  av_log(c->fc, AV_LOG_DEBUG,
2937  "found fragment index for track %u\n", frag->track_id);
2938  index = candidate;
2939  break;
2940  }
2941  }
2942 
2945  frag->moof_offset : frag->implicit_offset;
2946  frag->stsd_id = flags & MOV_TFHD_STSD_ID ? avio_rb32(pb) : trex->stsd_id;
2947 
2948  frag->duration = flags & MOV_TFHD_DEFAULT_DURATION ?
2949  avio_rb32(pb) : trex->duration;
2950  frag->size = flags & MOV_TFHD_DEFAULT_SIZE ?
2951  avio_rb32(pb) : trex->size;
2952  frag->flags = flags & MOV_TFHD_DEFAULT_FLAGS ?
2953  avio_rb32(pb) : trex->flags;
2954  frag->time = AV_NOPTS_VALUE;
2955  if (index) {
2956  int i, found = 0;
2957  for (i = index->current_item; i < index->item_count; i++) {
2958  if (frag->implicit_offset == index->items[i].moof_offset) {
2959  av_log(c->fc, AV_LOG_DEBUG, "found fragment index entry "
2960  "for track %u and moof_offset %"PRId64"\n",
2961  frag->track_id, index->items[i].moof_offset);
2962  frag->time = index->items[i].time;
2963  index->current_item = i + 1;
2964  found = 1;
2965  }
2966  }
2967  if (!found) {
2968  av_log(c->fc, AV_LOG_WARNING, "track %u has a fragment index "
2969  "but it doesn't have an (in-order) entry for moof_offset "
2970  "%"PRId64"\n", frag->track_id, frag->implicit_offset);
2971  }
2972  }
2973  av_dlog(c->fc, "frag flags 0x%x\n", frag->flags);
2974  return 0;
2975 }
2976 
2978 {
2979  c->chapter_track = avio_rb32(pb);
2980  return 0;
2981 }
2982 
2984 {
2985  MOVTrackExt *trex;
2986  int err;
2987 
2988  if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data))
2989  return AVERROR_INVALIDDATA;
2990  if ((err = av_reallocp_array(&c->trex_data, c->trex_count + 1,
2991  sizeof(*c->trex_data))) < 0) {
2992  c->trex_count = 0;
2993  return err;
2994  }
2995 
2996  c->fc->duration = AV_NOPTS_VALUE; // the duration from mvhd is not representing the whole file when fragments are used.
2997 
2998  trex = &c->trex_data[c->trex_count++];
2999  avio_r8(pb); /* version */
3000  avio_rb24(pb); /* flags */
3001  trex->track_id = avio_rb32(pb);
3002  trex->stsd_id = avio_rb32(pb);
3003  trex->duration = avio_rb32(pb);
3004  trex->size = avio_rb32(pb);
3005  trex->flags = avio_rb32(pb);
3006  return 0;
3007 }
3008 
3010 {
3011  MOVFragment *frag = &c->fragment;
3012  AVStream *st = NULL;
3013  MOVStreamContext *sc;
3014  int version, i;
3015 
3016  for (i = 0; i < c->fc->nb_streams; i++) {
3017  if (c->fc->streams[i]->id == frag->track_id) {
3018  st = c->fc->streams[i];
3019  break;
3020  }
3021  }
3022  if (!st) {
3023  av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id);
3024  return AVERROR_INVALIDDATA;
3025  }
3026  sc = st->priv_data;
3027  if (sc->pseudo_stream_id + 1 != frag->stsd_id)
3028  return 0;
3029  version = avio_r8(pb);
3030  avio_rb24(pb); /* flags */
3031  if (version) {
3032  sc->track_end = avio_rb64(pb);
3033  } else {
3034  sc->track_end = avio_rb32(pb);
3035  }
3036  return 0;
3037 }
3038 
3040 {
3041  MOVFragment *frag = &c->fragment;
3042  AVStream *st = NULL;
3043  MOVStreamContext *sc;
3044  MOVStts *ctts_data;
3045  uint64_t offset;
3046  int64_t dts;
3047  int data_offset = 0;
3048  unsigned entries, first_sample_flags = frag->flags;
3049  int flags, distance, i, found_keyframe = 0, err;
3050 
3051  for (i = 0; i < c->fc->nb_streams; i++) {
3052  if (c->fc->streams[i]->id == frag->track_id) {
3053  st = c->fc->streams[i];
3054  break;
3055  }
3056  }
3057  if (!st) {
3058  av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id);
3059  return AVERROR_INVALIDDATA;
3060  }
3061  sc = st->priv_data;
3062  if (sc->pseudo_stream_id+1 != frag->stsd_id && sc->pseudo_stream_id != -1)
3063  return 0;
3064  avio_r8(pb); /* version */
3065  flags = avio_rb24(pb);
3066  entries = avio_rb32(pb);
3067  av_dlog(c->fc, "flags 0x%x entries %d\n", flags, entries);
3068 
3069  /* Always assume the presence of composition time offsets.
3070  * Without this assumption, for instance, we cannot deal with a track in fragmented movies that meet the following.
3071  * 1) in the initial movie, there are no samples.
3072  * 2) in the first movie fragment, there is only one sample without composition time offset.
3073  * 3) in the subsequent movie fragments, there are samples with composition time offset. */
3074  if (!sc->ctts_count && sc->sample_count)
3075  {
3076  /* Complement ctts table if moov atom doesn't have ctts atom. */
3077  ctts_data = av_realloc(NULL, sizeof(*sc->ctts_data));
3078  if (!ctts_data)
3079  return AVERROR(ENOMEM);
3080  sc->ctts_data = ctts_data;
3081  sc->ctts_data[sc->ctts_count].count = sc->sample_count;
3082  sc->ctts_data[sc->ctts_count].duration = 0;
3083  sc->ctts_count++;
3084  }
3085  if ((uint64_t)entries+sc->ctts_count >= UINT_MAX/sizeof(*sc->ctts_data))
3086  return AVERROR_INVALIDDATA;
3087  if ((err = av_reallocp_array(&sc->ctts_data, entries + sc->ctts_count,
3088  sizeof(*sc->ctts_data))) < 0) {
3089  sc->ctts_count = 0;
3090  return err;
3091  }
3092  if (flags & MOV_TRUN_DATA_OFFSET) data_offset = avio_rb32(pb);
3093  if (flags & MOV_TRUN_FIRST_SAMPLE_FLAGS) first_sample_flags = avio_rb32(pb);
3094  dts = sc->track_end - sc->time_offset;
3095  offset = frag->base_data_offset + data_offset;
3096  distance = 0;
3097  av_dlog(c->fc, "first sample flags 0x%x\n", first_sample_flags);
3098  for (i = 0; i < entries && !pb->eof_reached; i++) {
3099  unsigned sample_size = frag->size;
3100  int sample_flags = i ? frag->flags : first_sample_flags;
3101  unsigned sample_duration = frag->duration;
3102  int keyframe = 0;
3103 
3104  if (flags & MOV_TRUN_SAMPLE_DURATION) sample_duration = avio_rb32(pb);
3105  if (flags & MOV_TRUN_SAMPLE_SIZE) sample_size = avio_rb32(pb);
3106  if (flags & MOV_TRUN_SAMPLE_FLAGS) sample_flags = avio_rb32(pb);
3107  sc->ctts_data[sc->ctts_count].count = 1;
3108  sc->ctts_data[sc->ctts_count].duration = (flags & MOV_TRUN_SAMPLE_CTS) ?
3109  avio_rb32(pb) : 0;
3111  if (frag->time != AV_NOPTS_VALUE) {
3112  if (c->use_mfra_for == FF_MOV_FLAG_MFRA_PTS) {
3113  int64_t pts = frag->time;
3114  av_log(c->fc, AV_LOG_DEBUG, "found frag time %"PRId64
3115  " sc->dts_shift %d ctts.duration %d"
3116  " sc->time_offset %"PRId64" flags & MOV_TRUN_SAMPLE_CTS %d\n", pts,
3117  sc->dts_shift, sc->ctts_data[sc->ctts_count].duration,
3118  sc->time_offset, flags & MOV_TRUN_SAMPLE_CTS);
3119  dts = pts - sc->dts_shift;
3120  if (flags & MOV_TRUN_SAMPLE_CTS) {
3121  dts -= sc->ctts_data[sc->ctts_count].duration;
3122  } else {
3123  dts -= sc->time_offset;
3124  }
3125  av_log(c->fc, AV_LOG_DEBUG, "calculated into dts %"PRId64"\n", dts);
3126  } else {
3127  dts = frag->time;
3128  av_log(c->fc, AV_LOG_DEBUG, "found frag time %"PRId64
3129  ", using it for dts\n", dts);
3130  }
3131  frag->time = AV_NOPTS_VALUE;
3132  }
3133  sc->ctts_count++;
3134  if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
3135  keyframe = 1;
3136  else if (!found_keyframe)
3137  keyframe = found_keyframe =
3138  !(sample_flags & (MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC |
3140  if (keyframe)
3141  distance = 0;
3142  av_add_index_entry(st, offset, dts, sample_size, distance,
3143  keyframe ? AVINDEX_KEYFRAME : 0);
3144  av_dlog(c->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
3145  "size %d, distance %d, keyframe %d\n", st->index, sc->sample_count+i,
3146  offset, dts, sample_size, distance, keyframe);
3147  distance++;
3148  dts += sample_duration;
3149  offset += sample_size;
3150  sc->data_size += sample_size;
3151  sc->duration_for_fps += sample_duration;
3152  sc->nb_frames_for_fps ++;
3153  }
3154 
3155  if (pb->eof_reached)
3156  return AVERROR_EOF;
3157 
3158  frag->implicit_offset = offset;
3159  st->duration = sc->track_end = dts + sc->time_offset;
3160  return 0;
3161 }
3162 
3163 /* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
3164 /* like the files created with Adobe Premiere 5.0, for samples see */
3165 /* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
3167 {
3168  int err;
3169 
3170  if (atom.size < 8)
3171  return 0; /* continue */
3172  if (avio_rb32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
3173  avio_skip(pb, atom.size - 4);
3174  return 0;
3175  }
3176  atom.type = avio_rl32(pb);
3177  atom.size -= 8;
3178  if (atom.type != MKTAG('m','d','a','t')) {
3179  avio_skip(pb, atom.size);
3180  return 0;
3181  }
3182  err = mov_read_mdat(c, pb, atom);
3183  return err;
3184 }
3185 
3187 {
3188 #if CONFIG_ZLIB
3189  AVIOContext ctx;
3190  uint8_t *cmov_data;
3191  uint8_t *moov_data; /* uncompressed data */
3192  long cmov_len, moov_len;
3193  int ret = -1;
3194 
3195  avio_rb32(pb); /* dcom atom */
3196  if (avio_rl32(pb) != MKTAG('d','c','o','m'))
3197  return AVERROR_INVALIDDATA;
3198  if (avio_rl32(pb) != MKTAG('z','l','i','b')) {
3199  av_log(c->fc, AV_LOG_ERROR, "unknown compression for cmov atom !\n");
3200  return AVERROR_INVALIDDATA;
3201  }
3202  avio_rb32(pb); /* cmvd atom */
3203  if (avio_rl32(pb) != MKTAG('c','m','v','d'))
3204  return AVERROR_INVALIDDATA;
3205  moov_len = avio_rb32(pb); /* uncompressed size */
3206  cmov_len = atom.size - 6 * 4;
3207 
3208  cmov_data = av_malloc(cmov_len);
3209  if (!cmov_data)
3210  return AVERROR(ENOMEM);
3211  moov_data = av_malloc(moov_len);
3212  if (!moov_data) {
3213  av_free(cmov_data);
3214  return AVERROR(ENOMEM);
3215  }
3216  avio_read(pb, cmov_data, cmov_len);
3217  if (uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
3218  goto free_and_return;
3219  if (ffio_init_context(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
3220  goto free_and_return;
3221  atom.type = MKTAG('m','o','o','v');
3222  atom.size = moov_len;
3223  ret = mov_read_default(c, &ctx, atom);
3224 free_and_return:
3225  av_free(moov_data);
3226  av_free(cmov_data);
3227  return ret;
3228 #else
3229  av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
3230  return AVERROR(ENOSYS);
3231 #endif
3232 }
3233 
3234 /* edit list atom */
3236 {
3237  MOVStreamContext *sc;
3238  int i, edit_count, version;
3239 
3240  if (c->fc->nb_streams < 1 || c->ignore_editlist)
3241  return 0;
3242  sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
3243 
3244  version = avio_r8(pb); /* version */
3245  avio_rb24(pb); /* flags */
3246  edit_count = avio_rb32(pb); /* entries */
3247 
3248  if (!edit_count)
3249  return 0;
3250  if (sc->elst_data)
3251  av_log(c->fc, AV_LOG_WARNING, "Duplicated ELST atom\n");
3252  av_free(sc->elst_data);
3253  sc->elst_count = 0;
3254  sc->elst_data = av_malloc_array(edit_count, sizeof(*sc->elst_data));
3255  if (!sc->elst_data)
3256  return AVERROR(ENOMEM);
3257 
3258  av_dlog(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, edit_count);
3259  for (i = 0; i < edit_count && !pb->eof_reached; i++) {
3260  MOVElst *e = &sc->elst_data[i];
3261 
3262  if (version == 1) {
3263  e->duration = avio_rb64(pb);
3264  e->time = avio_rb64(pb);
3265  } else {
3266  e->duration = avio_rb32(pb); /* segment duration */
3267  e->time = (int32_t)avio_rb32(pb); /* media time */
3268  }
3269  e->rate = avio_rb32(pb) / 65536.0;
3270  av_dlog(c->fc, "duration=%"PRId64" time=%"PRId64" rate=%f\n",
3271  e->duration, e->time, e->rate);
3272  }
3273  sc->elst_count = i;
3274 
3275  return 0;
3276 }
3277 
3279 {
3280  MOVStreamContext *sc;
3281 
3282  if (c->fc->nb_streams < 1)
3283  return AVERROR_INVALIDDATA;
3284  sc = c->fc->streams[c->fc->nb_streams - 1]->priv_data;
3285  sc->timecode_track = avio_rb32(pb);
3286  return 0;
3287 }
3288 
3290 {
3291  int ret;
3292  uint8_t uuid[16];
3293  static const uint8_t uuid_isml_manifest[] = {
3294  0xa5, 0xd4, 0x0b, 0x30, 0xe8, 0x14, 0x11, 0xdd,
3295  0xba, 0x2f, 0x08, 0x00, 0x20, 0x0c, 0x9a, 0x66
3296  };
3297 
3298  if (atom.size < sizeof(uuid) || atom.size == INT64_MAX)
3299  return AVERROR_INVALIDDATA;
3300 
3301  ret = avio_read(pb, uuid, sizeof(uuid));
3302  if (ret < 0) {
3303  return ret;
3304  } else if (ret != sizeof(uuid)) {
3305  return AVERROR_INVALIDDATA;
3306  }
3307  if (!memcmp(uuid, uuid_isml_manifest, sizeof(uuid))) {
3308  uint8_t *buffer, *ptr;
3309  char *endptr;
3310  size_t len = atom.size - sizeof(uuid);
3311 
3312  if (len < 4) {
3313  return AVERROR_INVALIDDATA;
3314  }
3315  ret = avio_skip(pb, 4); // zeroes
3316  len -= 4;
3317 
3318  buffer = av_mallocz(len + 1);
3319  if (!buffer) {
3320  return AVERROR(ENOMEM);
3321  }
3322  ret = avio_read(pb, buffer, len);
3323  if (ret < 0) {
3324  av_free(buffer);
3325  return ret;
3326  } else if (ret != len) {
3327  av_free(buffer);
3328  return AVERROR_INVALIDDATA;
3329  }
3330 
3331  ptr = buffer;
3332  while ((ptr = av_stristr(ptr, "systemBitrate=\""))) {
3333  ptr += sizeof("systemBitrate=\"") - 1;
3334  c->bitrates_count++;
3335  c->bitrates = av_realloc_f(c->bitrates, c->bitrates_count, sizeof(*c->bitrates));
3336  if (!c->bitrates) {
3337  c->bitrates_count = 0;
3338  av_free(buffer);
3339  return AVERROR(ENOMEM);
3340  }
3341  errno = 0;
3342  ret = strtol(ptr, &endptr, 10);
3343  if (ret < 0 || errno || *endptr != '"') {
3344  c->bitrates[c->bitrates_count - 1] = 0;
3345  } else {
3346  c->bitrates[c->bitrates_count - 1] = ret;
3347  }
3348  }
3349 
3350  av_free(buffer);
3351  }
3352  return 0;
3353 }
3354 
3356 {
3357  int ret;
3358  uint8_t content[16];
3359 
3360  if (atom.size < 8)
3361  return 0;
3362 
3363  ret = avio_read(pb, content, FFMIN(sizeof(content), atom.size));
3364  if (ret < 0)
3365  return ret;
3366 
3367  if ( !c->found_moov
3368  && !c->found_mdat
3369  && !memcmp(content, "Anevia\x1A\x1A", 8)
3372  }
3373 
3374  return 0;
3375 }
3376 
3378 { MKTAG('A','C','L','R'), mov_read_avid },
3379 { MKTAG('A','P','R','G'), mov_read_avid },
3380 { MKTAG('A','A','L','P'), mov_read_avid },
3381 { MKTAG('A','R','E','S'), mov_read_ares },
3382 { MKTAG('a','v','s','s'), mov_read_avss },
3383 { MKTAG('c','h','p','l'), mov_read_chpl },
3384 { MKTAG('c','o','6','4'), mov_read_stco },
3385 { MKTAG('c','o','l','r'), mov_read_colr },
3386 { MKTAG('c','t','t','s'), mov_read_ctts }, /* composition time to sample */
3387 { MKTAG('d','i','n','f'), mov_read_default },
3388 { MKTAG('D','p','x','E'), mov_read_dpxe },
3389 { MKTAG('d','r','e','f'), mov_read_dref },
3390 { MKTAG('e','d','t','s'), mov_read_default },
3391 { MKTAG('e','l','s','t'), mov_read_elst },
3392 { MKTAG('e','n','d','a'), mov_read_enda },
3393 { MKTAG('f','i','e','l'), mov_read_fiel },
3394 { MKTAG('f','t','y','p'), mov_read_ftyp },
3395 { MKTAG('g','l','b','l'), mov_read_glbl },
3396 { MKTAG('h','d','l','r'), mov_read_hdlr },
3397 { MKTAG('i','l','s','t'), mov_read_ilst },
3398 { MKTAG('j','p','2','h'), mov_read_jp2h },
3399 { MKTAG('m','d','a','t'), mov_read_mdat },
3400 { MKTAG('m','d','h','d'), mov_read_mdhd },
3401 { MKTAG('m','d','i','a'), mov_read_default },
3402 { MKTAG('m','e','t','a'), mov_read_meta },
3403 { MKTAG('m','i','n','f'), mov_read_default },
3404 { MKTAG('m','o','o','f'), mov_read_moof },
3405 { MKTAG('m','o','o','v'), mov_read_moov },
3406 { MKTAG('m','v','e','x'), mov_read_default },
3407 { MKTAG('m','v','h','d'), mov_read_mvhd },
3408 { MKTAG('S','M','I',' '), mov_read_svq3 },
3409 { MKTAG('a','l','a','c'), mov_read_alac }, /* alac specific atom */
3410 { MKTAG('a','v','c','C'), mov_read_glbl },
3411 { MKTAG('p','a','s','p'), mov_read_pasp },
3412 { MKTAG('s','t','b','l'), mov_read_default },
3413 { MKTAG('s','t','c','o'), mov_read_stco },
3414 { MKTAG('s','t','p','s'), mov_read_stps },
3415 { MKTAG('s','t','r','f'), mov_read_strf },
3416 { MKTAG('s','t','s','c'), mov_read_stsc },
3417 { MKTAG('s','t','s','d'), mov_read_stsd }, /* sample description */
3418 { MKTAG('s','t','s','s'), mov_read_stss }, /* sync sample */
3419 { MKTAG('s','t','s','z'), mov_read_stsz }, /* sample size */
3420 { MKTAG('s','t','t','s'), mov_read_stts },
3421 { MKTAG('s','t','z','2'), mov_read_stsz }, /* compact sample size */
3422 { MKTAG('t','k','h','d'), mov_read_tkhd }, /* track header */
3423 { MKTAG('t','f','d','t'), mov_read_tfdt },
3424 { MKTAG('t','f','h','d'), mov_read_tfhd }, /* track fragment header */
3425 { MKTAG('t','r','a','k'), mov_read_trak },
3426 { MKTAG('t','r','a','f'), mov_read_default },
3427 { MKTAG('t','r','e','f'), mov_read_default },
3428 { MKTAG('t','m','c','d'), mov_read_tmcd },
3429 { MKTAG('c','h','a','p'), mov_read_chap },
3430 { MKTAG('t','r','e','x'), mov_read_trex },
3431 { MKTAG('t','r','u','n'), mov_read_trun },
3432 { MKTAG('u','d','t','a'), mov_read_default },
3433 { MKTAG('w','a','v','e'), mov_read_wave },
3434 { MKTAG('e','s','d','s'), mov_read_esds },
3435 { MKTAG('d','a','c','3'), mov_read_dac3 }, /* AC-3 info */
3436 { MKTAG('d','e','c','3'), mov_read_dec3 }, /* EAC-3 info */
3437 { MKTAG('w','i','d','e'), mov_read_wide }, /* place holder */
3438 { MKTAG('w','f','e','x'), mov_read_wfex },
3439 { MKTAG('c','m','o','v'), mov_read_cmov },
3440 { MKTAG('c','h','a','n'), mov_read_chan }, /* channel layout */
3441 { MKTAG('d','v','c','1'), mov_read_dvc1 },
3442 { MKTAG('s','b','g','p'), mov_read_sbgp },
3443 { MKTAG('h','v','c','C'), mov_read_glbl },
3444 { MKTAG('u','u','i','d'), mov_read_uuid },
3445 { MKTAG('C','i','n', 0x8e), mov_read_targa_y216 },
3446 { MKTAG('f','r','e','e'), mov_read_free },
3447 { MKTAG('-','-','-','-'), mov_read_custom },
3448 { 0, NULL }
3449 };
3450 
3452 {
3453  int64_t total_size = 0;
3454  MOVAtom a;
3455  int i;
3456 
3457  if (c->atom_depth > 10) {
3458  av_log(c->fc, AV_LOG_ERROR, "Atoms too deeply nested\n");
3459  return AVERROR_INVALIDDATA;
3460  }
3461  c->atom_depth ++;
3462 
3463  if (atom.size < 0)
3464  atom.size = INT64_MAX;
3465  while (total_size + 8 <= atom.size && !avio_feof(pb)) {
3466  int (*parse)(MOVContext*, AVIOContext*, MOVAtom) = NULL;
3467  a.size = atom.size;
3468  a.type=0;
3469  if (atom.size >= 8) {
3470  a.size = avio_rb32(pb);
3471  a.type = avio_rl32(pb);
3472  if (a.type == MKTAG('f','r','e','e') &&
3473  a.size >= 8 &&
3474  c->moov_retry) {
3475  uint8_t buf[8];
3476  uint32_t *type = (uint32_t *)buf + 1;
3477  avio_read(pb, buf, 8);
3478  avio_seek(pb, -8, SEEK_CUR);
3479  if (*type == MKTAG('m','v','h','d') ||
3480  *type == MKTAG('c','m','o','v')) {
3481  av_log(c->fc, AV_LOG_ERROR, "Detected moov in a free atom.\n");
3482  a.type = MKTAG('m','o','o','v');
3483  }
3484  }
3485  if (atom.type != MKTAG('r','o','o','t') &&
3486  atom.type != MKTAG('m','o','o','v'))
3487  {
3488  if (a.type == MKTAG('t','r','a','k') || a.type == MKTAG('m','d','a','t'))
3489  {
3490  av_log(c->fc, AV_LOG_ERROR, "Broken file, trak/mdat not at top-level\n");
3491  avio_skip(pb, -8);
3492  c->atom_depth --;
3493  return 0;
3494  }
3495  }
3496  total_size += 8;
3497  if (a.size == 1 && total_size + 8 <= atom.size) { /* 64 bit extended size */
3498  a.size = avio_rb64(pb) - 8;
3499  total_size += 8;
3500  }
3501  }
3502  av_dlog(c->fc, "type: %08x '%.4s' parent:'%.4s' sz: %"PRId64" %"PRId64" %"PRId64"\n",
3503  a.type, (char*)&a.type, (char*)&atom.type, a.size, total_size, atom.size);
3504  if (a.size == 0) {
3505  a.size = atom.size - total_size + 8;
3506  }
3507  a.size -= 8;
3508  if (a.size < 0)
3509  break;
3510  a.size = FFMIN(a.size, atom.size - total_size);
3511 
3512  for (i = 0; mov_default_parse_table[i].type; i++)
3513  if (mov_default_parse_table[i].type == a.type) {
3514  parse = mov_default_parse_table[i].parse;
3515  break;
3516  }
3517 
3518  // container is user data
3519  if (!parse && (atom.type == MKTAG('u','d','t','a') ||
3520  atom.type == MKTAG('i','l','s','t')))
3522 
3523  if (!parse) { /* skip leaf atoms data */
3524  avio_skip(pb, a.size);
3525  } else {
3526  int64_t start_pos = avio_tell(pb);
3527  int64_t left;
3528  int err = parse(c, pb, a);
3529  if (err < 0) {
3530  c->atom_depth --;
3531  return err;
3532  }
3533  if (c->found_moov && c->found_mdat &&
3534  ((!pb->seekable || c->fc->flags & AVFMT_FLAG_IGNIDX) ||
3535  start_pos + a.size == avio_size(pb))) {
3536  if (!pb->seekable || c->fc->flags & AVFMT_FLAG_IGNIDX)
3537  c->next_root_atom = start_pos + a.size;
3538  c->atom_depth --;
3539  return 0;
3540  }
3541  left = a.size - avio_tell(pb) + start_pos;
3542  if (left > 0) /* skip garbage at atom end */
3543  avio_skip(pb, left);
3544  else if (left < 0) {
3545  av_log(c->fc, AV_LOG_WARNING,
3546  "overread end of atom '%.4s' by %"PRId64" bytes\n",
3547  (char*)&a.type, -left);
3548  avio_seek(pb, left, SEEK_CUR);
3549  }
3550  }
3551 
3552  total_size += a.size;
3553  }
3554 
3555  if (total_size < atom.size && atom.size < 0x7ffff)
3556  avio_skip(pb, atom.size - total_size);
3557 
3558  c->atom_depth --;
3559  return 0;
3560 }
3561 
3562 static int mov_probe(AVProbeData *p)
3563 {
3564  int64_t offset;
3565  uint32_t tag;
3566  int score = 0;
3567  int moov_offset = -1;
3568 
3569  /* check file header */
3570  offset = 0;
3571  for (;;) {
3572  /* ignore invalid offset */
3573  if ((offset + 8) > (unsigned int)p->buf_size)
3574  break;
3575  tag = AV_RL32(p->buf + offset + 4);
3576  switch(tag) {
3577  /* check for obvious tags */
3578  case MKTAG('m','o','o','v'):
3579  moov_offset = offset + 4;
3580  case MKTAG('m','d','a','t'):
3581  case MKTAG('p','n','o','t'): /* detect movs with preview pics like ew.mov and april.mov */
3582  case MKTAG('u','d','t','a'): /* Packet Video PVAuthor adds this and a lot of more junk */
3583  case MKTAG('f','t','y','p'):
3584  if (AV_RB32(p->buf+offset) < 8 &&
3585  (AV_RB32(p->buf+offset) != 1 ||
3586  offset + 12 > (unsigned int)p->buf_size ||
3587  AV_RB64(p->buf+offset + 8) == 0)) {
3588  score = FFMAX(score, AVPROBE_SCORE_EXTENSION);
3589  } else if (tag == MKTAG('f','t','y','p') &&
3590  AV_RL32(p->buf + offset + 8) == MKTAG('j','p','2',' ')) {
3591  score = FFMAX(score, 5);
3592  } else {
3593  score = AVPROBE_SCORE_MAX;
3594  }
3595  offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset;
3596  break;
3597  /* those are more common words, so rate then a bit less */
3598  case MKTAG('e','d','i','w'): /* xdcam files have reverted first tags */
3599  case MKTAG('w','i','d','e'):
3600  case MKTAG('f','r','e','e'):
3601  case MKTAG('j','u','n','k'):
3602  case MKTAG('p','i','c','t'):
3603  score = FFMAX(score, AVPROBE_SCORE_MAX - 5);
3604  offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset;
3605  break;
3606  case MKTAG(0x82,0x82,0x7f,0x7d):
3607  case MKTAG('s','k','i','p'):
3608  case MKTAG('u','u','i','d'):
3609  case MKTAG('p','r','f','l'):
3610  /* if we only find those cause probedata is too small at least rate them */
3611  score = FFMAX(score, AVPROBE_SCORE_EXTENSION);
3612  offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset;
3613  break;
3614  default:
3615  offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset;
3616  }
3617  }
3618  if(score > AVPROBE_SCORE_MAX - 50 && moov_offset != -1) {
3619  /* moov atom in the header - we should make sure that this is not a
3620  * MOV-packed MPEG-PS */
3621  offset = moov_offset;
3622 
3623  while(offset < (p->buf_size - 16)){ /* Sufficient space */
3624  /* We found an actual hdlr atom */
3625  if(AV_RL32(p->buf + offset ) == MKTAG('h','d','l','r') &&
3626  AV_RL32(p->buf + offset + 8) == MKTAG('m','h','l','r') &&
3627  AV_RL32(p->buf + offset + 12) == MKTAG('M','P','E','G')){
3628  av_log(NULL, AV_LOG_WARNING, "Found media data tag MPEG indicating this is a MOV-packed MPEG-PS.\n");
3629  /* We found a media handler reference atom describing an
3630  * MPEG-PS-in-MOV, return a
3631  * low score to force expanding the probe window until
3632  * mpegps_probe finds what it needs */
3633  return 5;
3634  }else
3635  /* Keep looking */
3636  offset+=2;
3637  }
3638  }
3639 
3640  return score;
3641 }
3642 
3643 // must be done after parsing all trak because there's no order requirement
3645 {
3646  MOVContext *mov = s->priv_data;
3647  AVStream *st = NULL;
3648  MOVStreamContext *sc;
3649  int64_t cur_pos;
3650  int i;
3651 
3652  for (i = 0; i < s->nb_streams; i++)
3653  if (s->streams[i]->id == mov->chapter_track) {
3654  st = s->streams[i];
3655  break;
3656  }
3657  if (!st) {
3658  av_log(s, AV_LOG_ERROR, "Referenced QT chapter track not found\n");
3659  return;
3660  }
3661 
3662  st->discard = AVDISCARD_ALL;
3663  sc = st->priv_data;
3664  cur_pos = avio_tell(sc->pb);
3665 
3666  for (i = 0; i < st->nb_index_entries; i++) {
3667  AVIndexEntry *sample = &st->index_entries[i];
3668  int64_t end = i+1 < st->nb_index_entries ? st->index_entries[i+1].timestamp : st->duration;
3669  uint8_t *title;
3670  uint16_t ch;
3671  int len, title_len;
3672 
3673  if (end < sample->timestamp) {
3674  av_log(s, AV_LOG_WARNING, "ignoring stream duration which is shorter than chapters\n");
3675  end = AV_NOPTS_VALUE;
3676  }
3677 
3678  if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
3679  av_log(s, AV_LOG_ERROR, "Chapter %d not found in file\n", i);
3680  goto finish;
3681  }
3682 
3683  // the first two bytes are the length of the title
3684  len = avio_rb16(sc->pb);
3685  if (len > sample->size-2)
3686  continue;
3687  title_len = 2*len + 1;
3688  if (!(title = av_mallocz(title_len)))
3689  goto finish;
3690 
3691  // The samples could theoretically be in any encoding if there's an encd
3692  // atom following, but in practice are only utf-8 or utf-16, distinguished
3693  // instead by the presence of a BOM
3694  if (!len) {
3695  title[0] = 0;
3696  } else {
3697  ch = avio_rb16(sc->pb);
3698  if (ch == 0xfeff)
3699  avio_get_str16be(sc->pb, len, title, title_len);
3700  else if (ch == 0xfffe)
3701  avio_get_str16le(sc->pb, len, title, title_len);
3702  else {
3703  AV_WB16(title, ch);
3704  if (len == 1 || len == 2)
3705  title[len] = 0;
3706  else
3707  avio_get_str(sc->pb, INT_MAX, title + 2, len - 1);
3708  }
3709  }
3710 
3711  avpriv_new_chapter(s, i, st->time_base, sample->timestamp, end, title);
3712  av_freep(&title);
3713  }
3714 finish:
3715  avio_seek(sc->pb, cur_pos, SEEK_SET);
3716 }
3717 
3719  uint32_t value, int flags)
3720 {
3721  AVTimecode tc;
3722  char buf[AV_TIMECODE_STR_SIZE];
3723  AVRational rate = {st->codec->time_base.den,
3724  st->codec->time_base.num};
3725  int ret = av_timecode_init(&tc, rate, flags, 0, s);
3726  if (ret < 0)
3727  return ret;
3728  av_dict_set(&st->metadata, "timecode",
3729  av_timecode_make_string(&tc, buf, value), 0);
3730  return 0;
3731 }
3732 
3734 {
3735  MOVStreamContext *sc = st->priv_data;
3736  int flags = 0;
3737  int64_t cur_pos = avio_tell(sc->pb);
3738  uint32_t value;
3739 
3740  if (!st->nb_index_entries)
3741  return -1;
3742 
3743  avio_seek(sc->pb, st->index_entries->pos, SEEK_SET);
3744  value = avio_rb32(s->pb);
3745 
3746  if (sc->tmcd_flags & 0x0001) flags |= AV_TIMECODE_FLAG_DROPFRAME;
3747  if (sc->tmcd_flags & 0x0002) flags |= AV_TIMECODE_FLAG_24HOURSMAX;
3748  if (sc->tmcd_flags & 0x0004) flags |= AV_TIMECODE_FLAG_ALLOWNEGATIVE;
3749 
3750  /* Assume Counter flag is set to 1 in tmcd track (even though it is likely
3751  * not the case) and thus assume "frame number format" instead of QT one.
3752  * No sample with tmcd track can be found with a QT timecode at the moment,
3753  * despite what the tmcd track "suggests" (Counter flag set to 0 means QT
3754  * format). */
3755  parse_timecode_in_framenum_format(s, st, value, flags);
3756 
3757  avio_seek(sc->pb, cur_pos, SEEK_SET);
3758  return 0;
3759 }
3760 
3762 {
3763  MOVContext *mov = s->priv_data;
3764  int i, j;
3765 
3766  for (i = 0; i < s->nb_streams; i++) {
3767  AVStream *st = s->streams[i];
3768  MOVStreamContext *sc = st->priv_data;
3769 
3770  av_freep(&sc->ctts_data);
3771  for (j = 0; j < sc->drefs_count; j++) {
3772  av_freep(&sc->drefs[j].path);
3773  av_freep(&sc->drefs[j].dir);
3774  }
3775  av_freep(&sc->drefs);
3776 
3777  sc->drefs_count = 0;
3778 
3779  if (!sc->pb_is_copied)
3780  avio_closep(&sc->pb);
3781 
3782  sc->pb = NULL;
3783  av_freep(&sc->chunk_offsets);
3784  av_freep(&sc->stsc_data);
3785  av_freep(&sc->sample_sizes);
3786  av_freep(&sc->keyframes);
3787  av_freep(&sc->stts_data);
3788  av_freep(&sc->stps_data);
3789  av_freep(&sc->elst_data);
3790  av_freep(&sc->rap_group);
3791  av_freep(&sc->display_matrix);
3792  }
3793 
3794  if (mov->dv_demux) {
3796  mov->dv_fctx = NULL;
3797  }
3798 
3799  av_freep(&mov->trex_data);
3800  av_freep(&mov->bitrates);
3801 
3802  for (i = 0; i < mov->fragment_index_count; i++) {
3804  av_freep(&index->items);
3805  av_freep(&mov->fragment_index_data[i]);
3806  }
3808 
3809  return 0;
3810 }
3811 
3812 static int tmcd_is_referenced(AVFormatContext *s, int tmcd_id)
3813 {
3814  int i;
3815 
3816  for (i = 0; i < s->nb_streams; i++) {
3817  AVStream *st = s->streams[i];
3818  MOVStreamContext *sc = st->priv_data;
3819 
3820  if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
3821  sc->timecode_track == tmcd_id)
3822  return 1;
3823  }
3824  return 0;
3825 }
3826 
3827 /* look for a tmcd track not referenced by any video track, and export it globally */
3829 {
3830  int i;
3831 
3832  for (i = 0; i < s->nb_streams; i++) {
3833  AVStream *st = s->streams[i];
3834 
3835  if (st->codec->codec_tag == MKTAG('t','m','c','d') &&
3836  !tmcd_is_referenced(s, i + 1)) {
3837  AVDictionaryEntry *tcr = av_dict_get(st->metadata, "timecode", NULL, 0);
3838  if (tcr) {
3839  av_dict_set(&s->metadata, "timecode", tcr->value, 0);
3840  break;
3841  }
3842  }
3843  }
3844 }
3845 
3846 static int read_tfra(MOVContext *mov, AVIOContext *f)
3847 {
3848  MOVFragmentIndex* index = NULL;
3849  int version, fieldlength, i, j;
3850  int64_t pos = avio_tell(f);
3851  uint32_t size = avio_rb32(f);
3852  void *tmp;
3853 
3854  if (avio_rb32(f) != MKBETAG('t', 'f', 'r', 'a')) {
3855  return 1;
3856  }
3857  av_log(mov->fc, AV_LOG_VERBOSE, "found tfra\n");
3858  index = av_mallocz(sizeof(MOVFragmentIndex));
3859  if (!index) {
3860  return AVERROR(ENOMEM);
3861  }
3862 
3864  mov->fragment_index_count + 1,
3865  sizeof(MOVFragmentIndex*));
3866  if (!tmp) {
3867  av_freep(&index);
3868  return AVERROR(ENOMEM);
3869  }
3870  mov->fragment_index_data = tmp;
3872 
3873  version = avio_r8(f);
3874  avio_rb24(f);
3875  index->track_id = avio_rb32(f);
3876  fieldlength = avio_rb32(f);
3877  index->item_count = avio_rb32(f);
3878  index->items = av_mallocz_array(
3879  index->item_count, sizeof(MOVFragmentIndexItem));
3880  if (!index->items) {
3881  index->item_count = 0;
3882  return AVERROR(ENOMEM);
3883  }
3884  for (i = 0; i < index->item_count; i++) {
3885  int64_t time, offset;
3886  if (version == 1) {
3887  time = avio_rb64(f);
3888  offset = avio_rb64(f);
3889  } else {
3890  time = avio_rb32(f);
3891  offset = avio_rb32(f);
3892  }
3893  index->items[i].time = time;
3894  index->items[i].moof_offset = offset;
3895  for (j = 0; j < ((fieldlength >> 4) & 3) + 1; j++)
3896  avio_r8(f);
3897  for (j = 0; j < ((fieldlength >> 2) & 3) + 1; j++)
3898  avio_r8(f);
3899  for (j = 0; j < ((fieldlength >> 0) & 3) + 1; j++)
3900  avio_r8(f);
3901  }
3902 
3903  avio_seek(f, pos + size, SEEK_SET);
3904  return 0;
3905 }
3906 
3908 {
3909  int64_t stream_size = avio_size(f);
3910  int64_t original_pos = avio_tell(f);
3911  int64_t seek_ret;
3912  int32_t mfra_size;
3913  int ret = -1;
3914  if ((seek_ret = avio_seek(f, stream_size - 4, SEEK_SET)) < 0) {
3915  ret = seek_ret;
3916  goto fail;
3917  }
3918  mfra_size = avio_rb32(f);
3919  if (mfra_size < 0 || mfra_size > stream_size) {
3920  av_log(c->fc, AV_LOG_DEBUG, "doesn't look like mfra (unreasonable size)\n");
3921  goto fail;
3922  }
3923  if ((seek_ret = avio_seek(f, -mfra_size, SEEK_CUR)) < 0) {
3924  ret = seek_ret;
3925  goto fail;
3926  }
3927  if (avio_rb32(f) != mfra_size) {
3928  av_log(c->fc, AV_LOG_DEBUG, "doesn't look like mfra (size mismatch)\n");
3929  goto fail;
3930  }
3931  if (avio_rb32(f) != MKBETAG('m', 'f', 'r', 'a')) {
3932  av_log(c->fc, AV_LOG_DEBUG, "doesn't look like mfra (tag mismatch)\n");
3933  goto fail;
3934  }
3935  av_log(c->fc, AV_LOG_VERBOSE, "stream has mfra\n");
3936  do {
3937  ret = read_tfra(c, f);
3938  if (ret < 0)
3939  goto fail;
3940  } while (!ret);
3941  ret = 0;
3942 fail:
3943  seek_ret = avio_seek(f, original_pos, SEEK_SET);
3944  if (seek_ret < 0) {
3945  av_log(c->fc, AV_LOG_ERROR,
3946  "failed to seek back after looking for mfra\n");
3947  ret = seek_ret;
3948  }
3949  return ret;
3950 }
3951 
3953 {
3954  MOVContext *mov = s->priv_data;
3955  AVIOContext *pb = s->pb;
3956  int j, err;
3957  MOVAtom atom = { AV_RL32("root") };
3958  int i;
3959 
3960  mov->fc = s;
3961  /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
3962  if (pb->seekable)
3963  atom.size = avio_size(pb);
3964  else
3965  atom.size = INT64_MAX;
3966 
3967  /* check MOV header */
3968  do {
3969  if (mov->moov_retry)
3970  avio_seek(pb, 0, SEEK_SET);
3971  if ((err = mov_read_default(mov, pb, atom)) < 0) {
3972  av_log(s, AV_LOG_ERROR, "error reading header\n");
3973  mov_read_close(s);
3974  return err;
3975  }
3976  } while (pb->seekable && !mov->found_moov && !mov->moov_retry++);
3977  if (!mov->found_moov) {
3978  av_log(s, AV_LOG_ERROR, "moov atom not found\n");
3979  mov_read_close(s);
3980  return AVERROR_INVALIDDATA;
3981  }
3982  av_dlog(mov->fc, "on_parse_exit_offset=%"PRId64"\n", avio_tell(pb));
3983 
3984  if (pb->seekable) {
3985  if (mov->chapter_track > 0)
3986  mov_read_chapters(s);
3987  for (i = 0; i < s->nb_streams; i++)
3988  if (s->streams[i]->codec->codec_tag == AV_RL32("tmcd"))
3989  mov_read_timecode_track(s, s->streams[i]);
3990  }
3991 
3992  /* copy timecode metadata from tmcd tracks to the related video streams */
3993  for (i = 0; i < s->nb_streams; i++) {
3994  AVStream *st = s->streams[i];
3995  MOVStreamContext *sc = st->priv_data;
3996  if (sc->timecode_track > 0) {
3997  AVDictionaryEntry *tcr;
3998  int tmcd_st_id = -1;
3999 
4000  for (j = 0; j < s->nb_streams; j++)
4001  if (s->streams[j]->id == sc->timecode_track)
4002  tmcd_st_id = j;
4003 
4004  if (tmcd_st_id < 0 || tmcd_st_id == i)
4005  continue;
4006  tcr = av_dict_get(s->streams[tmcd_st_id]->metadata, "timecode", NULL, 0);
4007  if (tcr)
4008  av_dict_set(&st->metadata, "timecode", tcr->value, 0);
4009  }
4010  }
4012 
4013  for (i = 0; i < s->nb_streams; i++) {
4014  AVStream *st = s->streams[i];
4015  MOVStreamContext *sc = st->priv_data;
4016  fix_timescale(mov, sc);
4018  st->skip_samples = sc->start_pad;
4019  }
4020  if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && sc->nb_frames_for_fps > 0 && sc->duration_for_fps > 0)
4022  sc->time_scale*(int64_t)sc->nb_frames_for_fps, sc->duration_for_fps, INT_MAX);
4023  if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
4024  if (st->codec->width <= 0 || st->codec->height <= 0) {
4025  st->codec->width = sc->width;
4026  st->codec->height = sc->height;
4027  }
4028  if (st->codec->codec_id == AV_CODEC_ID_DVD_SUBTITLE) {
4029  if ((err = mov_rewrite_dvd_sub_extradata(st)) < 0)
4030  return err;
4031  }
4032  }
4033  }
4034 
4035  if (mov->trex_data) {
4036  for (i = 0; i < s->nb_streams; i++) {
4037  AVStream *st = s->streams[i];
4038  MOVStreamContext *sc = st->priv_data;
4039  if (st->duration > 0)
4040  st->codec->bit_rate = sc->data_size * 8 * sc->time_scale / st->duration;
4041  }
4042  }
4043 
4044  if (mov->use_mfra_for > 0) {
4045  for (i = 0; i < s->nb_streams; i++) {
4046  AVStream *st = s->streams[i];
4047  MOVStreamContext *sc = st->priv_data;
4048  if (sc->duration_for_fps > 0) {
4049  st->codec->bit_rate = sc->data_size * 8 * sc->time_scale /
4050  sc->duration_for_fps;
4051  }
4052  }
4053  }
4054 
4055  for (i = 0; i < mov->bitrates_count && i < s->nb_streams; i++) {
4056  if (mov->bitrates[i]) {
4057  s->streams[i]->codec->bit_rate = mov->bitrates[i];
4058  }
4059  }
4060 
4061  ff_rfps_calculate(s);
4062 
4063  for (i = 0; i < s->nb_streams; i++) {
4064  AVStream *st = s->streams[i];
4065  MOVStreamContext *sc = st->priv_data;
4066 
4067  switch (st->codec->codec_type) {
4068  case AVMEDIA_TYPE_AUDIO:
4069  err = ff_replaygain_export(st, s->metadata);
4070  if (err < 0) {
4071  mov_read_close(s);
4072  return err;
4073  }
4074  break;
4075  case AVMEDIA_TYPE_VIDEO:
4076  if (sc->display_matrix) {
4077  AVPacketSideData *sd, *tmp;
4078 
4079  tmp = av_realloc_array(st->side_data,
4080  st->nb_side_data + 1, sizeof(*tmp));
4081  if (!tmp)
4082  return AVERROR(ENOMEM);
4083 
4084  st->side_data = tmp;
4085  st->nb_side_data++;
4086 
4087  sd = &st->side_data[st->nb_side_data - 1];
4089  sd->size = sizeof(int32_t) * 9;
4090  sd->data = (uint8_t*)sc->display_matrix;
4091  sc->display_matrix = NULL;
4092  }
4093  break;
4094  }
4095  }
4096 
4097  return 0;
4098 }
4099 
4101 {
4102  AVIndexEntry *sample = NULL;
4103  int64_t best_dts = INT64_MAX;
4104  int i;
4105  for (i = 0; i < s->nb_streams; i++) {
4106  AVStream *avst = s->streams[i];
4107  MOVStreamContext *msc = avst->priv_data;
4108  if (msc->pb && msc->current_sample < avst->nb_index_entries) {
4109  AVIndexEntry *current_sample = &avst->index_entries[msc->current_sample];
4110  int64_t dts = av_rescale(current_sample->timestamp, AV_TIME_BASE, msc->time_scale);
4111  av_dlog(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
4112  if (!sample || (!s->pb->seekable && current_sample->pos < sample->pos) ||
4113  (s->pb->seekable &&
4114  ((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb &&
4115  ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
4116  (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) {
4117  sample = current_sample;
4118  best_dts = dts;
4119  *st = avst;
4120  }
4121  }
4122  }
4123  return sample;
4124 }
4125 
4127 {
4128  MOVContext *mov = s->priv_data;
4129  MOVStreamContext *sc;
4131  AVStream *st = NULL;
4132  int ret;
4133  mov->fc = s;
4134  retry:
4135  sample = mov_find_next_sample(s, &st);
4136  if (!sample) {
4137  mov->found_mdat = 0;
4138  if (!mov->next_root_atom)
4139  return AVERROR_EOF;
4140  avio_seek(s->pb, mov->next_root_atom, SEEK_SET);
4141  mov->next_root_atom = 0;
4142  if (mov_read_default(mov, s->pb, (MOVAtom){ AV_RL32("root"), INT64_MAX }) < 0 ||
4143  avio_feof(s->pb))
4144  return AVERROR_EOF;
4145  av_dlog(s, "read fragments, offset 0x%"PRIx64"\n", avio_tell(s->pb));
4146  goto retry;
4147  }
4148  sc = st->priv_data;
4149  /* must be done just before reading, to avoid infinite loop on sample */
4150  sc->current_sample++;
4151 
4152  if (mov->next_root_atom) {
4153  sample->pos = FFMIN(sample->pos, mov->next_root_atom);
4154  sample->size = FFMIN(sample->size, (mov->next_root_atom - sample->pos));
4155  }
4156 
4157  if (st->discard != AVDISCARD_ALL) {
4158  if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
4159  av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
4160  sc->ffindex, sample->pos);
4161  return AVERROR_INVALIDDATA;
4162  }
4163  ret = av_get_packet(sc->pb, pkt, sample->size);
4164  if (ret < 0)
4165  return ret;
4166  if (sc->has_palette) {
4167  uint8_t *pal;
4168 
4170  if (!pal) {
4171  av_log(mov->fc, AV_LOG_ERROR, "Cannot append palette to packet\n");
4172  } else {
4173  memcpy(pal, sc->palette, AVPALETTE_SIZE);
4174  sc->has_palette = 0;
4175  }
4176  }
4177 #if CONFIG_DV_DEMUXER
4178  if (mov->dv_demux && sc->dv_audio_container) {
4179  avpriv_dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size, pkt->pos);
4180  av_freep(&pkt->data);
4181  pkt->size = 0;
4182  ret = avpriv_dv_get_packet(mov->dv_demux, pkt);
4183  if (ret < 0)
4184  return ret;
4185  }
4186 #endif
4187  }
4188 
4189  pkt->stream_index = sc->ffindex;
4190  pkt->dts = sample->timestamp;
4191  if (sc->ctts_data && sc->ctts_index < sc->ctts_count) {
4192  pkt->pts = pkt->dts + sc->dts_shift + sc->ctts_data[sc->ctts_index].duration;
4193  /* update ctts context */
4194  sc->ctts_sample++;
4195  if (sc->ctts_index < sc->ctts_count &&
4196  sc->ctts_data[sc->ctts_index].count == sc->ctts_sample) {
4197  sc->ctts_index++;
4198  sc->ctts_sample = 0;
4199  }
4200  if (sc->wrong_dts)
4201  pkt->dts = AV_NOPTS_VALUE;
4202  } else {
4203  int64_t next_dts = (sc->current_sample < st->nb_index_entries) ?
4205  pkt->duration = next_dts - pkt->dts;
4206  pkt->pts = pkt->dts;
4207  }
4208  if (st->discard == AVDISCARD_ALL)
4209  goto retry;
4210  pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? AV_PKT_FLAG_KEY : 0;
4211  pkt->pos = sample->pos;
4212  av_dlog(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n",
4213  pkt->stream_index