FFmpeg  4.1.4
mov.c
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1 /*
2  * MOV demuxer
3  * Copyright (c) 2001 Fabrice Bellard
4  * Copyright (c) 2009 Baptiste Coudurier <baptiste dot coudurier at gmail dot com>
5  *
6  * first version by Francois Revol <revol@free.fr>
7  * seek function by Gael Chardon <gael.dev@4now.net>
8  *
9  * This file is part of FFmpeg.
10  *
11  * FFmpeg is free software; you can redistribute it and/or
12  * modify it under the terms of the GNU Lesser General Public
13  * License as published by the Free Software Foundation; either
14  * version 2.1 of the License, or (at your option) any later version.
15  *
16  * FFmpeg is distributed in the hope that it will be useful,
17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19  * Lesser General Public License for more details.
20  *
21  * You should have received a copy of the GNU Lesser General Public
22  * License along with FFmpeg; if not, write to the Free Software
23  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24  */
25 
26 #include <inttypes.h>
27 #include <limits.h>
28 #include <stdint.h>
29 
30 #include "libavutil/attributes.h"
32 #include "libavutil/internal.h"
33 #include "libavutil/intreadwrite.h"
34 #include "libavutil/intfloat.h"
35 #include "libavutil/mathematics.h"
37 #include "libavutil/avassert.h"
38 #include "libavutil/avstring.h"
39 #include "libavutil/dict.h"
40 #include "libavutil/display.h"
41 #include "libavutil/opt.h"
42 #include "libavutil/aes.h"
43 #include "libavutil/aes_ctr.h"
44 #include "libavutil/pixdesc.h"
45 #include "libavutil/sha.h"
46 #include "libavutil/spherical.h"
47 #include "libavutil/stereo3d.h"
48 #include "libavutil/timecode.h"
49 #include "libavcodec/ac3tab.h"
50 #include "libavcodec/flac.h"
52 #include "avformat.h"
53 #include "internal.h"
54 #include "avio_internal.h"
55 #include "riff.h"
56 #include "isom.h"
57 #include "libavcodec/get_bits.h"
58 #include "id3v1.h"
59 #include "mov_chan.h"
60 #include "replaygain.h"
61 
62 #if CONFIG_ZLIB
63 #include <zlib.h>
64 #endif
65 
66 #include "qtpalette.h"
67 
68 /* those functions parse an atom */
69 /* links atom IDs to parse functions */
70 typedef struct MOVParseTableEntry {
71  uint32_t type;
74 
75 static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom);
76 static int mov_read_mfra(MOVContext *c, AVIOContext *f);
77 static int64_t add_ctts_entry(MOVStts** ctts_data, unsigned int* ctts_count, unsigned int* allocated_size,
78  int count, int duration);
79 
81  unsigned len, const char *key)
82 {
83  char buf[16];
84 
85  short current, total = 0;
86  avio_rb16(pb); // unknown
87  current = avio_rb16(pb);
88  if (len >= 6)
89  total = avio_rb16(pb);
90  if (!total)
91  snprintf(buf, sizeof(buf), "%d", current);
92  else
93  snprintf(buf, sizeof(buf), "%d/%d", current, total);
95  av_dict_set(&c->fc->metadata, key, buf, 0);
96 
97  return 0;
98 }
99 
101  unsigned len, const char *key)
102 {
103  /* bypass padding bytes */
104  avio_r8(pb);
105  avio_r8(pb);
106  avio_r8(pb);
107 
109  av_dict_set_int(&c->fc->metadata, key, avio_r8(pb), 0);
110 
111  return 0;
112 }
113 
115  unsigned len, const char *key)
116 {
118  av_dict_set_int(&c->fc->metadata, key, avio_r8(pb), 0);
119 
120  return 0;
121 }
122 
124  unsigned len, const char *key)
125 {
126  short genre;
127 
128  avio_r8(pb); // unknown
129 
130  genre = avio_r8(pb);
131  if (genre < 1 || genre > ID3v1_GENRE_MAX)
132  return 0;
134  av_dict_set(&c->fc->metadata, key, ff_id3v1_genre_str[genre-1], 0);
135 
136  return 0;
137 }
138 
139 static const uint32_t mac_to_unicode[128] = {
140  0x00C4,0x00C5,0x00C7,0x00C9,0x00D1,0x00D6,0x00DC,0x00E1,
141  0x00E0,0x00E2,0x00E4,0x00E3,0x00E5,0x00E7,0x00E9,0x00E8,
142  0x00EA,0x00EB,0x00ED,0x00EC,0x00EE,0x00EF,0x00F1,0x00F3,
143  0x00F2,0x00F4,0x00F6,0x00F5,0x00FA,0x00F9,0x00FB,0x00FC,
144  0x2020,0x00B0,0x00A2,0x00A3,0x00A7,0x2022,0x00B6,0x00DF,
145  0x00AE,0x00A9,0x2122,0x00B4,0x00A8,0x2260,0x00C6,0x00D8,
146  0x221E,0x00B1,0x2264,0x2265,0x00A5,0x00B5,0x2202,0x2211,
147  0x220F,0x03C0,0x222B,0x00AA,0x00BA,0x03A9,0x00E6,0x00F8,
148  0x00BF,0x00A1,0x00AC,0x221A,0x0192,0x2248,0x2206,0x00AB,
149  0x00BB,0x2026,0x00A0,0x00C0,0x00C3,0x00D5,0x0152,0x0153,
150  0x2013,0x2014,0x201C,0x201D,0x2018,0x2019,0x00F7,0x25CA,
151  0x00FF,0x0178,0x2044,0x20AC,0x2039,0x203A,0xFB01,0xFB02,
152  0x2021,0x00B7,0x201A,0x201E,0x2030,0x00C2,0x00CA,0x00C1,
153  0x00CB,0x00C8,0x00CD,0x00CE,0x00CF,0x00CC,0x00D3,0x00D4,
154  0xF8FF,0x00D2,0x00DA,0x00DB,0x00D9,0x0131,0x02C6,0x02DC,
155  0x00AF,0x02D8,0x02D9,0x02DA,0x00B8,0x02DD,0x02DB,0x02C7,
156 };
157 
159  char *dst, int dstlen)
160 {
161  char *p = dst;
162  char *end = dst+dstlen-1;
163  int i;
164 
165  for (i = 0; i < len; i++) {
166  uint8_t t, c = avio_r8(pb);
167 
168  if (p >= end)
169  continue;
170 
171  if (c < 0x80)
172  *p++ = c;
173  else if (p < end)
174  PUT_UTF8(mac_to_unicode[c-0x80], t, if (p < end) *p++ = t;);
175  }
176  *p = 0;
177  return p - dst;
178 }
179 
180 static int mov_read_covr(MOVContext *c, AVIOContext *pb, int type, int len)
181 {
182  AVPacket pkt;
183  AVStream *st;
184  MOVStreamContext *sc;
185  enum AVCodecID id;
186  int ret;
187 
188  switch (type) {
189  case 0xd: id = AV_CODEC_ID_MJPEG; break;
190  case 0xe: id = AV_CODEC_ID_PNG; break;
191  case 0x1b: id = AV_CODEC_ID_BMP; break;
192  default:
193  av_log(c->fc, AV_LOG_WARNING, "Unknown cover type: 0x%x.\n", type);
194  avio_skip(pb, len);
195  return 0;
196  }
197 
198  st = avformat_new_stream(c->fc, NULL);
199  if (!st)
200  return AVERROR(ENOMEM);
201  sc = av_mallocz(sizeof(*sc));
202  if (!sc)
203  return AVERROR(ENOMEM);
204  st->priv_data = sc;
205 
206  ret = av_get_packet(pb, &pkt, len);
207  if (ret < 0)
208  return ret;
209 
210  if (pkt.size >= 8 && id != AV_CODEC_ID_BMP) {
211  if (AV_RB64(pkt.data) == 0x89504e470d0a1a0a) {
212  id = AV_CODEC_ID_PNG;
213  } else {
214  id = AV_CODEC_ID_MJPEG;
215  }
216  }
217 
219 
220  st->attached_pic = pkt;
221  st->attached_pic.stream_index = st->index;
223 
225  st->codecpar->codec_id = id;
226 
227  return 0;
228 }
229 
230 // 3GPP TS 26.244
231 static int mov_metadata_loci(MOVContext *c, AVIOContext *pb, unsigned len)
232 {
233  char language[4] = { 0 };
234  char buf[200], place[100];
235  uint16_t langcode = 0;
236  double longitude, latitude, altitude;
237  const char *key = "location";
238 
239  if (len < 4 + 2 + 1 + 1 + 4 + 4 + 4) {
240  av_log(c->fc, AV_LOG_ERROR, "loci too short\n");
241  return AVERROR_INVALIDDATA;
242  }
243 
244  avio_skip(pb, 4); // version+flags
245  langcode = avio_rb16(pb);
246  ff_mov_lang_to_iso639(langcode, language);
247  len -= 6;
248 
249  len -= avio_get_str(pb, len, place, sizeof(place));
250  if (len < 1) {
251  av_log(c->fc, AV_LOG_ERROR, "place name too long\n");
252  return AVERROR_INVALIDDATA;
253  }
254  avio_skip(pb, 1); // role
255  len -= 1;
256 
257  if (len < 12) {
258  av_log(c->fc, AV_LOG_ERROR,
259  "loci too short (%u bytes left, need at least %d)\n", len, 12);
260  return AVERROR_INVALIDDATA;
261  }
262  longitude = ((int32_t) avio_rb32(pb)) / (float) (1 << 16);
263  latitude = ((int32_t) avio_rb32(pb)) / (float) (1 << 16);
264  altitude = ((int32_t) avio_rb32(pb)) / (float) (1 << 16);
265 
266  // Try to output in the same format as the ?xyz field
267  snprintf(buf, sizeof(buf), "%+08.4f%+09.4f", latitude, longitude);
268  if (altitude)
269  av_strlcatf(buf, sizeof(buf), "%+f", altitude);
270  av_strlcatf(buf, sizeof(buf), "/%s", place);
271 
272  if (*language && strcmp(language, "und")) {
273  char key2[16];
274  snprintf(key2, sizeof(key2), "%s-%s", key, language);
275  av_dict_set(&c->fc->metadata, key2, buf, 0);
276  }
278  return av_dict_set(&c->fc->metadata, key, buf, 0);
279 }
280 
281 static int mov_metadata_hmmt(MOVContext *c, AVIOContext *pb, unsigned len)
282 {
283  int i, n_hmmt;
284 
285  if (len < 2)
286  return 0;
287  if (c->ignore_chapters)
288  return 0;
289 
290  n_hmmt = avio_rb32(pb);
291  for (i = 0; i < n_hmmt && !pb->eof_reached; i++) {
292  int moment_time = avio_rb32(pb);
293  avpriv_new_chapter(c->fc, i, av_make_q(1, 1000), moment_time, AV_NOPTS_VALUE, NULL);
294  }
295  return 0;
296 }
297 
299 {
300  char tmp_key[5];
301  char key2[32], language[4] = {0};
302  char *str = NULL;
303  const char *key = NULL;
304  uint16_t langcode = 0;
305  uint32_t data_type = 0, str_size, str_size_alloc;
306  int (*parse)(MOVContext*, AVIOContext*, unsigned, const char*) = NULL;
307  int raw = 0;
308  int num = 0;
309 
310  switch (atom.type) {
311  case MKTAG( '@','P','R','M'): key = "premiere_version"; raw = 1; break;
312  case MKTAG( '@','P','R','Q'): key = "quicktime_version"; raw = 1; break;
313  case MKTAG( 'X','M','P','_'):
314  if (c->export_xmp) { key = "xmp"; raw = 1; } break;
315  case MKTAG( 'a','A','R','T'): key = "album_artist"; break;
316  case MKTAG( 'a','k','I','D'): key = "account_type";
318  case MKTAG( 'a','p','I','D'): key = "account_id"; break;
319  case MKTAG( 'c','a','t','g'): key = "category"; break;
320  case MKTAG( 'c','p','i','l'): key = "compilation";
322  case MKTAG( 'c','p','r','t'): key = "copyright"; break;
323  case MKTAG( 'd','e','s','c'): key = "description"; break;
324  case MKTAG( 'd','i','s','k'): key = "disc";
326  case MKTAG( 'e','g','i','d'): key = "episode_uid";
328  case MKTAG( 'F','I','R','M'): key = "firmware"; raw = 1; break;
329  case MKTAG( 'g','n','r','e'): key = "genre";
330  parse = mov_metadata_gnre; break;
331  case MKTAG( 'h','d','v','d'): key = "hd_video";
333  case MKTAG( 'H','M','M','T'):
334  return mov_metadata_hmmt(c, pb, atom.size);
335  case MKTAG( 'k','e','y','w'): key = "keywords"; break;
336  case MKTAG( 'l','d','e','s'): key = "synopsis"; break;
337  case MKTAG( 'l','o','c','i'):
338  return mov_metadata_loci(c, pb, atom.size);
339  case MKTAG( 'm','a','n','u'): key = "make"; break;
340  case MKTAG( 'm','o','d','l'): key = "model"; break;
341  case MKTAG( 'p','c','s','t'): key = "podcast";
343  case MKTAG( 'p','g','a','p'): key = "gapless_playback";
345  case MKTAG( 'p','u','r','d'): key = "purchase_date"; break;
346  case MKTAG( 'r','t','n','g'): key = "rating";
348  case MKTAG( 's','o','a','a'): key = "sort_album_artist"; break;
349  case MKTAG( 's','o','a','l'): key = "sort_album"; break;
350  case MKTAG( 's','o','a','r'): key = "sort_artist"; break;
351  case MKTAG( 's','o','c','o'): key = "sort_composer"; break;
352  case MKTAG( 's','o','n','m'): key = "sort_name"; break;
353  case MKTAG( 's','o','s','n'): key = "sort_show"; break;
354  case MKTAG( 's','t','i','k'): key = "media_type";
356  case MKTAG( 't','r','k','n'): key = "track";
358  case MKTAG( 't','v','e','n'): key = "episode_id"; break;
359  case MKTAG( 't','v','e','s'): key = "episode_sort";
361  case MKTAG( 't','v','n','n'): key = "network"; break;
362  case MKTAG( 't','v','s','h'): key = "show"; break;
363  case MKTAG( 't','v','s','n'): key = "season_number";
365  case MKTAG(0xa9,'A','R','T'): key = "artist"; break;
366  case MKTAG(0xa9,'P','R','D'): key = "producer"; break;
367  case MKTAG(0xa9,'a','l','b'): key = "album"; break;
368  case MKTAG(0xa9,'a','u','t'): key = "artist"; break;
369  case MKTAG(0xa9,'c','h','p'): key = "chapter"; break;
370  case MKTAG(0xa9,'c','m','t'): key = "comment"; break;
371  case MKTAG(0xa9,'c','o','m'): key = "composer"; break;
372  case MKTAG(0xa9,'c','p','y'): key = "copyright"; break;
373  case MKTAG(0xa9,'d','a','y'): key = "date"; break;
374  case MKTAG(0xa9,'d','i','r'): key = "director"; break;
375  case MKTAG(0xa9,'d','i','s'): key = "disclaimer"; break;
376  case MKTAG(0xa9,'e','d','1'): key = "edit_date"; break;
377  case MKTAG(0xa9,'e','n','c'): key = "encoder"; break;
378  case MKTAG(0xa9,'f','m','t'): key = "original_format"; break;
379  case MKTAG(0xa9,'g','e','n'): key = "genre"; break;
380  case MKTAG(0xa9,'g','r','p'): key = "grouping"; break;
381  case MKTAG(0xa9,'h','s','t'): key = "host_computer"; break;
382  case MKTAG(0xa9,'i','n','f'): key = "comment"; break;
383  case MKTAG(0xa9,'l','y','r'): key = "lyrics"; break;
384  case MKTAG(0xa9,'m','a','k'): key = "make"; break;
385  case MKTAG(0xa9,'m','o','d'): key = "model"; break;
386  case MKTAG(0xa9,'n','a','m'): key = "title"; break;
387  case MKTAG(0xa9,'o','p','e'): key = "original_artist"; break;
388  case MKTAG(0xa9,'p','r','d'): key = "producer"; break;
389  case MKTAG(0xa9,'p','r','f'): key = "performers"; break;
390  case MKTAG(0xa9,'r','e','q'): key = "playback_requirements"; break;
391  case MKTAG(0xa9,'s','r','c'): key = "original_source"; break;
392  case MKTAG(0xa9,'s','t','3'): key = "subtitle"; break;
393  case MKTAG(0xa9,'s','w','r'): key = "encoder"; break;
394  case MKTAG(0xa9,'t','o','o'): key = "encoder"; break;
395  case MKTAG(0xa9,'t','r','k'): key = "track"; break;
396  case MKTAG(0xa9,'u','r','l'): key = "URL"; break;
397  case MKTAG(0xa9,'w','r','n'): key = "warning"; break;
398  case MKTAG(0xa9,'w','r','t'): key = "composer"; break;
399  case MKTAG(0xa9,'x','y','z'): key = "location"; break;
400  }
401 retry:
402  if (c->itunes_metadata && atom.size > 8) {
403  int data_size = avio_rb32(pb);
404  int tag = avio_rl32(pb);
405  if (tag == MKTAG('d','a','t','a') && data_size <= atom.size) {
406  data_type = avio_rb32(pb); // type
407  avio_rb32(pb); // unknown
408  str_size = data_size - 16;
409  atom.size -= 16;
410 
411  if (atom.type == MKTAG('c', 'o', 'v', 'r')) {
412  int ret = mov_read_covr(c, pb, data_type, str_size);
413  if (ret < 0) {
414  av_log(c->fc, AV_LOG_ERROR, "Error parsing cover art.\n");
415  return ret;
416  }
417  atom.size -= str_size;
418  if (atom.size > 8)
419  goto retry;
420  return ret;
421  } else if (!key && c->found_hdlr_mdta && c->meta_keys) {
422  uint32_t index = AV_RB32(&atom.type);
423  if (index < c->meta_keys_count && index > 0) {
424  key = c->meta_keys[index];
425  } else {
427  "The index of 'data' is out of range: %"PRId32" < 1 or >= %d.\n",
428  index, c->meta_keys_count);
429  }
430  }
431  } else return 0;
432  } else if (atom.size > 4 && key && !c->itunes_metadata && !raw) {
433  str_size = avio_rb16(pb); // string length
434  if (str_size > atom.size) {
435  raw = 1;
436  avio_seek(pb, -2, SEEK_CUR);
437  av_log(c->fc, AV_LOG_WARNING, "UDTA parsing failed retrying raw\n");
438  goto retry;
439  }
440  langcode = avio_rb16(pb);
441  ff_mov_lang_to_iso639(langcode, language);
442  atom.size -= 4;
443  } else
444  str_size = atom.size;
445 
446  if (c->export_all && !key) {
447  snprintf(tmp_key, 5, "%.4s", (char*)&atom.type);
448  key = tmp_key;
449  }
450 
451  if (!key)
452  return 0;
453  if (atom.size < 0 || str_size >= INT_MAX/2)
454  return AVERROR_INVALIDDATA;
455 
456  // Allocates enough space if data_type is a int32 or float32 number, otherwise
457  // worst-case requirement for output string in case of utf8 coded input
458  num = (data_type >= 21 && data_type <= 23);
459  str_size_alloc = (num ? 512 : (raw ? str_size : str_size * 2)) + 1;
460  str = av_mallocz(str_size_alloc);
461  if (!str)
462  return AVERROR(ENOMEM);
463 
464  if (parse)
465  parse(c, pb, str_size, key);
466  else {
467  if (!raw && (data_type == 3 || (data_type == 0 && (langcode < 0x400 || langcode == 0x7fff)))) { // MAC Encoded
468  mov_read_mac_string(c, pb, str_size, str, str_size_alloc);
469  } else if (data_type == 21) { // BE signed integer, variable size
470  int val = 0;
471  if (str_size == 1)
472  val = (int8_t)avio_r8(pb);
473  else if (str_size == 2)
474  val = (int16_t)avio_rb16(pb);
475  else if (str_size == 3)
476  val = ((int32_t)(avio_rb24(pb)<<8))>>8;
477  else if (str_size == 4)
478  val = (int32_t)avio_rb32(pb);
479  if (snprintf(str, str_size_alloc, "%d", val) >= str_size_alloc) {
480  av_log(c->fc, AV_LOG_ERROR,
481  "Failed to store the number (%d) in string.\n", val);
482  av_free(str);
483  return AVERROR_INVALIDDATA;
484  }
485  } else if (data_type == 22) { // BE unsigned integer, variable size
486  unsigned int val = 0;
487  if (str_size == 1)
488  val = avio_r8(pb);
489  else if (str_size == 2)
490  val = avio_rb16(pb);
491  else if (str_size == 3)
492  val = avio_rb24(pb);
493  else if (str_size == 4)
494  val = avio_rb32(pb);
495  if (snprintf(str, str_size_alloc, "%u", val) >= str_size_alloc) {
496  av_log(c->fc, AV_LOG_ERROR,
497  "Failed to store the number (%u) in string.\n", val);
498  av_free(str);
499  return AVERROR_INVALIDDATA;
500  }
501  } else if (data_type == 23 && str_size >= 4) { // BE float32
502  float val = av_int2float(avio_rb32(pb));
503  if (snprintf(str, str_size_alloc, "%f", val) >= str_size_alloc) {
504  av_log(c->fc, AV_LOG_ERROR,
505  "Failed to store the float32 number (%f) in string.\n", val);
506  av_free(str);
507  return AVERROR_INVALIDDATA;
508  }
509  } else {
510  int ret = ffio_read_size(pb, str, str_size);
511  if (ret < 0) {
512  av_free(str);
513  return ret;
514  }
515  str[str_size] = 0;
516  }
518  av_dict_set(&c->fc->metadata, key, str, 0);
519  if (*language && strcmp(language, "und")) {
520  snprintf(key2, sizeof(key2), "%s-%s", key, language);
521  av_dict_set(&c->fc->metadata, key2, str, 0);
522  }
523  if (!strcmp(key, "encoder")) {
524  int major, minor, micro;
525  if (sscanf(str, "HandBrake %d.%d.%d", &major, &minor, &micro) == 3) {
526  c->handbrake_version = 1000000*major + 1000*minor + micro;
527  }
528  }
529  }
530 
531  av_freep(&str);
532  return 0;
533 }
534 
536 {
537  int64_t start;
538  int i, nb_chapters, str_len, version;
539  char str[256+1];
540  int ret;
541 
542  if (c->ignore_chapters)
543  return 0;
544 
545  if ((atom.size -= 5) < 0)
546  return 0;
547 
548  version = avio_r8(pb);
549  avio_rb24(pb);
550  if (version)
551  avio_rb32(pb); // ???
552  nb_chapters = avio_r8(pb);
553 
554  for (i = 0; i < nb_chapters; i++) {
555  if (atom.size < 9)
556  return 0;
557 
558  start = avio_rb64(pb);
559  str_len = avio_r8(pb);
560 
561  if ((atom.size -= 9+str_len) < 0)
562  return 0;
563 
564  ret = ffio_read_size(pb, str, str_len);
565  if (ret < 0)
566  return ret;
567  str[str_len] = 0;
568  avpriv_new_chapter(c->fc, i, (AVRational){1,10000000}, start, AV_NOPTS_VALUE, str);
569  }
570  return 0;
571 }
572 
573 #define MIN_DATA_ENTRY_BOX_SIZE 12
575 {
576  AVStream *st;
577  MOVStreamContext *sc;
578  int entries, i, j;
579 
580  if (c->fc->nb_streams < 1)
581  return 0;
582  st = c->fc->streams[c->fc->nb_streams-1];
583  sc = st->priv_data;
584 
585  avio_rb32(pb); // version + flags
586  entries = avio_rb32(pb);
587  if (!entries ||
588  entries > (atom.size - 1) / MIN_DATA_ENTRY_BOX_SIZE + 1 ||
589  entries >= UINT_MAX / sizeof(*sc->drefs))
590  return AVERROR_INVALIDDATA;
591  sc->drefs_count = 0;
592  av_free(sc->drefs);
593  sc->drefs_count = 0;
594  sc->drefs = av_mallocz(entries * sizeof(*sc->drefs));
595  if (!sc->drefs)
596  return AVERROR(ENOMEM);
597  sc->drefs_count = entries;
598 
599  for (i = 0; i < entries; i++) {
600  MOVDref *dref = &sc->drefs[i];
601  uint32_t size = avio_rb32(pb);
602  int64_t next = avio_tell(pb) + size - 4;
603 
604  if (size < 12)
605  return AVERROR_INVALIDDATA;
606 
607  dref->type = avio_rl32(pb);
608  avio_rb32(pb); // version + flags
609 
610  if (dref->type == MKTAG('a','l','i','s') && size > 150) {
611  /* macintosh alias record */
612  uint16_t volume_len, len;
613  int16_t type;
614  int ret;
615 
616  avio_skip(pb, 10);
617 
618  volume_len = avio_r8(pb);
619  volume_len = FFMIN(volume_len, 27);
620  ret = ffio_read_size(pb, dref->volume, 27);
621  if (ret < 0)
622  return ret;
623  dref->volume[volume_len] = 0;
624  av_log(c->fc, AV_LOG_DEBUG, "volume %s, len %d\n", dref->volume, volume_len);
625 
626  avio_skip(pb, 12);
627 
628  len = avio_r8(pb);
629  len = FFMIN(len, 63);
630  ret = ffio_read_size(pb, dref->filename, 63);
631  if (ret < 0)
632  return ret;
633  dref->filename[len] = 0;
634  av_log(c->fc, AV_LOG_DEBUG, "filename %s, len %d\n", dref->filename, len);
635 
636  avio_skip(pb, 16);
637 
638  /* read next level up_from_alias/down_to_target */
639  dref->nlvl_from = avio_rb16(pb);
640  dref->nlvl_to = avio_rb16(pb);
641  av_log(c->fc, AV_LOG_DEBUG, "nlvl from %d, nlvl to %d\n",
642  dref->nlvl_from, dref->nlvl_to);
643 
644  avio_skip(pb, 16);
645 
646  for (type = 0; type != -1 && avio_tell(pb) < next; ) {
647  if(avio_feof(pb))
648  return AVERROR_EOF;
649  type = avio_rb16(pb);
650  len = avio_rb16(pb);
651  av_log(c->fc, AV_LOG_DEBUG, "type %d, len %d\n", type, len);
652  if (len&1)
653  len += 1;
654  if (type == 2) { // absolute path
655  av_free(dref->path);
656  dref->path = av_mallocz(len+1);
657  if (!dref->path)
658  return AVERROR(ENOMEM);
659 
660  ret = ffio_read_size(pb, dref->path, len);
661  if (ret < 0) {
662  av_freep(&dref->path);
663  return ret;
664  }
665  if (len > volume_len && !strncmp(dref->path, dref->volume, volume_len)) {
666  len -= volume_len;
667  memmove(dref->path, dref->path+volume_len, len);
668  dref->path[len] = 0;
669  }
670  // trim string of any ending zeros
671  for (j = len - 1; j >= 0; j--) {
672  if (dref->path[j] == 0)
673  len--;
674  else
675  break;
676  }
677  for (j = 0; j < len; j++)
678  if (dref->path[j] == ':' || dref->path[j] == 0)
679  dref->path[j] = '/';
680  av_log(c->fc, AV_LOG_DEBUG, "path %s\n", dref->path);
681  } else if (type == 0) { // directory name
682  av_free(dref->dir);
683  dref->dir = av_malloc(len+1);
684  if (!dref->dir)
685  return AVERROR(ENOMEM);
686 
687  ret = ffio_read_size(pb, dref->dir, len);
688  if (ret < 0) {
689  av_freep(&dref->dir);
690  return ret;
691  }
692  dref->dir[len] = 0;
693  for (j = 0; j < len; j++)
694  if (dref->dir[j] == ':')
695  dref->dir[j] = '/';
696  av_log(c->fc, AV_LOG_DEBUG, "dir %s\n", dref->dir);
697  } else
698  avio_skip(pb, len);
699  }
700  } else {
701  av_log(c->fc, AV_LOG_DEBUG, "Unknown dref type 0x%08"PRIx32" size %"PRIu32"\n",
702  dref->type, size);
703  entries--;
704  i--;
705  }
706  avio_seek(pb, next, SEEK_SET);
707  }
708  return 0;
709 }
710 
712 {
713  AVStream *st;
714  uint32_t type;
715  uint32_t ctype;
716  int64_t title_size;
717  char *title_str;
718  int ret;
719 
720  avio_r8(pb); /* version */
721  avio_rb24(pb); /* flags */
722 
723  /* component type */
724  ctype = avio_rl32(pb);
725  type = avio_rl32(pb); /* component subtype */
726 
727  av_log(c->fc, AV_LOG_TRACE, "ctype=%s\n", av_fourcc2str(ctype));
728  av_log(c->fc, AV_LOG_TRACE, "stype=%s\n", av_fourcc2str(type));
729 
730  if (c->trak_index < 0) { // meta not inside a trak
731  if (type == MKTAG('m','d','t','a')) {
732  c->found_hdlr_mdta = 1;
733  }
734  return 0;
735  }
736 
737  st = c->fc->streams[c->fc->nb_streams-1];
738 
739  if (type == MKTAG('v','i','d','e'))
741  else if (type == MKTAG('s','o','u','n'))
743  else if (type == MKTAG('m','1','a',' '))
745  else if ((type == MKTAG('s','u','b','p')) || (type == MKTAG('c','l','c','p')))
747 
748  avio_rb32(pb); /* component manufacture */
749  avio_rb32(pb); /* component flags */
750  avio_rb32(pb); /* component flags mask */
751 
752  title_size = atom.size - 24;
753  if (title_size > 0) {
754  if (title_size > FFMIN(INT_MAX, SIZE_MAX-1))
755  return AVERROR_INVALIDDATA;
756  title_str = av_malloc(title_size + 1); /* Add null terminator */
757  if (!title_str)
758  return AVERROR(ENOMEM);
759 
760  ret = ffio_read_size(pb, title_str, title_size);
761  if (ret < 0) {
762  av_freep(&title_str);
763  return ret;
764  }
765  title_str[title_size] = 0;
766  if (title_str[0]) {
767  int off = (!c->isom && title_str[0] == title_size - 1);
768  // flag added so as to not set stream handler name if already set from mdia->hdlr
769  av_dict_set(&st->metadata, "handler_name", title_str + off, AV_DICT_DONT_OVERWRITE);
770  }
771  av_freep(&title_str);
772  }
773 
774  return 0;
775 }
776 
778 {
779  return ff_mov_read_esds(c->fc, pb);
780 }
781 
783 {
784  AVStream *st;
785  enum AVAudioServiceType *ast;
786  int ac3info, acmod, lfeon, bsmod;
787 
788  if (c->fc->nb_streams < 1)
789  return 0;
790  st = c->fc->streams[c->fc->nb_streams-1];
791 
793  sizeof(*ast));
794  if (!ast)
795  return AVERROR(ENOMEM);
796 
797  ac3info = avio_rb24(pb);
798  bsmod = (ac3info >> 14) & 0x7;
799  acmod = (ac3info >> 11) & 0x7;
800  lfeon = (ac3info >> 10) & 0x1;
801  st->codecpar->channels = ((int[]){2,1,2,3,3,4,4,5})[acmod] + lfeon;
803  if (lfeon)
805  *ast = bsmod;
806  if (st->codecpar->channels > 1 && bsmod == 0x7)
808 
809 #if FF_API_LAVF_AVCTX
811  st->codec->audio_service_type = *ast;
813 #endif
814 
815  return 0;
816 }
817 
819 {
820  AVStream *st;
821  enum AVAudioServiceType *ast;
822  int eac3info, acmod, lfeon, bsmod;
823 
824  if (c->fc->nb_streams < 1)
825  return 0;
826  st = c->fc->streams[c->fc->nb_streams-1];
827 
829  sizeof(*ast));
830  if (!ast)
831  return AVERROR(ENOMEM);
832 
833  /* No need to parse fields for additional independent substreams and its
834  * associated dependent substreams since libavcodec's E-AC-3 decoder
835  * does not support them yet. */
836  avio_rb16(pb); /* data_rate and num_ind_sub */
837  eac3info = avio_rb24(pb);
838  bsmod = (eac3info >> 12) & 0x1f;
839  acmod = (eac3info >> 9) & 0x7;
840  lfeon = (eac3info >> 8) & 0x1;
842  if (lfeon)
845  *ast = bsmod;
846  if (st->codecpar->channels > 1 && bsmod == 0x7)
848 
849 #if FF_API_LAVF_AVCTX
851  st->codec->audio_service_type = *ast;
853 #endif
854 
855  return 0;
856 }
857 
859 {
860  const uint32_t ddts_size = 20;
861  AVStream *st = NULL;
862  uint8_t *buf = NULL;
863  uint32_t frame_duration_code = 0;
864  uint32_t channel_layout_code = 0;
865  GetBitContext gb;
866 
867  buf = av_malloc(ddts_size + AV_INPUT_BUFFER_PADDING_SIZE);
868  if (!buf) {
869  return AVERROR(ENOMEM);
870  }
871  if (avio_read(pb, buf, ddts_size) < ddts_size) {
872  av_free(buf);
873  return AVERROR_INVALIDDATA;
874  }
875 
876  init_get_bits(&gb, buf, 8*ddts_size);
877 
878  if (c->fc->nb_streams < 1) {
879  av_free(buf);
880  return 0;
881  }
882  st = c->fc->streams[c->fc->nb_streams-1];
883 
884  st->codecpar->sample_rate = get_bits_long(&gb, 32);
885  if (st->codecpar->sample_rate <= 0) {
886  av_log(c->fc, AV_LOG_ERROR, "Invalid sample rate %d\n", st->codecpar->sample_rate);
887  av_free(buf);
888  return AVERROR_INVALIDDATA;
889  }
890  skip_bits_long(&gb, 32); /* max bitrate */
891  st->codecpar->bit_rate = get_bits_long(&gb, 32);
892  st->codecpar->bits_per_coded_sample = get_bits(&gb, 8);
893  frame_duration_code = get_bits(&gb, 2);
894  skip_bits(&gb, 30); /* various fields */
895  channel_layout_code = get_bits(&gb, 16);
896 
897  st->codecpar->frame_size =
898  (frame_duration_code == 0) ? 512 :
899  (frame_duration_code == 1) ? 1024 :
900  (frame_duration_code == 2) ? 2048 :
901  (frame_duration_code == 3) ? 4096 : 0;
902 
903  if (channel_layout_code > 0xff) {
904  av_log(c->fc, AV_LOG_WARNING, "Unsupported DTS audio channel layout");
905  }
906  st->codecpar->channel_layout =
907  ((channel_layout_code & 0x1) ? AV_CH_FRONT_CENTER : 0) |
908  ((channel_layout_code & 0x2) ? AV_CH_FRONT_LEFT : 0) |
909  ((channel_layout_code & 0x2) ? AV_CH_FRONT_RIGHT : 0) |
910  ((channel_layout_code & 0x4) ? AV_CH_SIDE_LEFT : 0) |
911  ((channel_layout_code & 0x4) ? AV_CH_SIDE_RIGHT : 0) |
912  ((channel_layout_code & 0x8) ? AV_CH_LOW_FREQUENCY : 0);
913 
915  av_free(buf);
916 
917  return 0;
918 }
919 
921 {
922  AVStream *st;
923 
924  if (c->fc->nb_streams < 1)
925  return 0;
926  st = c->fc->streams[c->fc->nb_streams-1];
927 
928  if (atom.size < 16)
929  return 0;
930 
931  /* skip version and flags */
932  avio_skip(pb, 4);
933 
934  ff_mov_read_chan(c->fc, pb, st, atom.size - 4);
935 
936  return 0;
937 }
938 
940 {
941  AVStream *st;
942  int ret;
943 
944  if (c->fc->nb_streams < 1)
945  return 0;
946  st = c->fc->streams[c->fc->nb_streams-1];
947 
948  if ((ret = ff_get_wav_header(c->fc, pb, st->codecpar, atom.size, 0)) < 0)
949  av_log(c->fc, AV_LOG_WARNING, "get_wav_header failed\n");
950 
951  return ret;
952 }
953 
955 {
956  const int num = avio_rb32(pb);
957  const int den = avio_rb32(pb);
958  AVStream *st;
959 
960  if (c->fc->nb_streams < 1)
961  return 0;
962  st = c->fc->streams[c->fc->nb_streams-1];
963 
964  if ((st->sample_aspect_ratio.den != 1 || st->sample_aspect_ratio.num) && // default
965  (den != st->sample_aspect_ratio.den || num != st->sample_aspect_ratio.num)) {
967  "sample aspect ratio already set to %d:%d, ignoring 'pasp' atom (%d:%d)\n",
969  num, den);
970  } else if (den != 0) {
972  num, den, 32767);
973  }
974  return 0;
975 }
976 
977 /* this atom contains actual media data */
979 {
980  if (atom.size == 0) /* wrong one (MP4) */
981  return 0;
982  c->found_mdat=1;
983  return 0; /* now go for moov */
984 }
985 
986 #define DRM_BLOB_SIZE 56
987 
989 {
990  uint8_t intermediate_key[20];
991  uint8_t intermediate_iv[20];
992  uint8_t input[64];
993  uint8_t output[64];
994  uint8_t file_checksum[20];
995  uint8_t calculated_checksum[20];
996  struct AVSHA *sha;
997  int i;
998  int ret = 0;
999  uint8_t *activation_bytes = c->activation_bytes;
1000  uint8_t *fixed_key = c->audible_fixed_key;
1001 
1002  c->aax_mode = 1;
1003 
1004  sha = av_sha_alloc();
1005  if (!sha)
1006  return AVERROR(ENOMEM);
1007  c->aes_decrypt = av_aes_alloc();
1008  if (!c->aes_decrypt) {
1009  ret = AVERROR(ENOMEM);
1010  goto fail;
1011  }
1012 
1013  /* drm blob processing */
1014  avio_read(pb, output, 8); // go to offset 8, absolute position 0x251
1015  avio_read(pb, input, DRM_BLOB_SIZE);
1016  avio_read(pb, output, 4); // go to offset 4, absolute position 0x28d
1017  avio_read(pb, file_checksum, 20);
1018 
1019  av_log(c->fc, AV_LOG_INFO, "[aax] file checksum == "); // required by external tools
1020  for (i = 0; i < 20; i++)
1021  av_log(c->fc, AV_LOG_INFO, "%02x", file_checksum[i]);
1022  av_log(c->fc, AV_LOG_INFO, "\n");
1023 
1024  /* verify activation data */
1025  if (!activation_bytes) {
1026  av_log(c->fc, AV_LOG_WARNING, "[aax] activation_bytes option is missing!\n");
1027  ret = 0; /* allow ffprobe to continue working on .aax files */
1028  goto fail;
1029  }
1030  if (c->activation_bytes_size != 4) {
1031  av_log(c->fc, AV_LOG_FATAL, "[aax] activation_bytes value needs to be 4 bytes!\n");
1032  ret = AVERROR(EINVAL);
1033  goto fail;
1034  }
1035 
1036  /* verify fixed key */
1037  if (c->audible_fixed_key_size != 16) {
1038  av_log(c->fc, AV_LOG_FATAL, "[aax] audible_fixed_key value needs to be 16 bytes!\n");
1039  ret = AVERROR(EINVAL);
1040  goto fail;
1041  }
1042 
1043  /* AAX (and AAX+) key derivation */
1044  av_sha_init(sha, 160);
1045  av_sha_update(sha, fixed_key, 16);
1046  av_sha_update(sha, activation_bytes, 4);
1047  av_sha_final(sha, intermediate_key);
1048  av_sha_init(sha, 160);
1049  av_sha_update(sha, fixed_key, 16);
1050  av_sha_update(sha, intermediate_key, 20);
1051  av_sha_update(sha, activation_bytes, 4);
1052  av_sha_final(sha, intermediate_iv);
1053  av_sha_init(sha, 160);
1054  av_sha_update(sha, intermediate_key, 16);
1055  av_sha_update(sha, intermediate_iv, 16);
1056  av_sha_final(sha, calculated_checksum);
1057  if (memcmp(calculated_checksum, file_checksum, 20)) { // critical error
1058  av_log(c->fc, AV_LOG_ERROR, "[aax] mismatch in checksums!\n");
1059  ret = AVERROR_INVALIDDATA;
1060  goto fail;
1061  }
1062  av_aes_init(c->aes_decrypt, intermediate_key, 128, 1);
1063  av_aes_crypt(c->aes_decrypt, output, input, DRM_BLOB_SIZE >> 4, intermediate_iv, 1);
1064  for (i = 0; i < 4; i++) {
1065  // file data (in output) is stored in big-endian mode
1066  if (activation_bytes[i] != output[3 - i]) { // critical error
1067  av_log(c->fc, AV_LOG_ERROR, "[aax] error in drm blob decryption!\n");
1068  ret = AVERROR_INVALIDDATA;
1069  goto fail;
1070  }
1071  }
1072  memcpy(c->file_key, output + 8, 16);
1073  memcpy(input, output + 26, 16);
1074  av_sha_init(sha, 160);
1075  av_sha_update(sha, input, 16);
1076  av_sha_update(sha, c->file_key, 16);
1077  av_sha_update(sha, fixed_key, 16);
1078  av_sha_final(sha, c->file_iv);
1079 
1080 fail:
1081  av_free(sha);
1082 
1083  return ret;
1084 }
1085 
1086 // Audible AAX (and AAX+) bytestream decryption
1087 static int aax_filter(uint8_t *input, int size, MOVContext *c)
1088 {
1089  int blocks = 0;
1090  unsigned char iv[16];
1091 
1092  memcpy(iv, c->file_iv, 16); // iv is overwritten
1093  blocks = size >> 4; // trailing bytes are not encrypted!
1094  av_aes_init(c->aes_decrypt, c->file_key, 128, 1);
1095  av_aes_crypt(c->aes_decrypt, input, input, blocks, iv, 1);
1096 
1097  return 0;
1098 }
1099 
1100 /* read major brand, minor version and compatible brands and store them as metadata */
1102 {
1103  uint32_t minor_ver;
1104  int comp_brand_size;
1105  char* comp_brands_str;
1106  uint8_t type[5] = {0};
1107  int ret = ffio_read_size(pb, type, 4);
1108  if (ret < 0)
1109  return ret;
1110 
1111  if (strcmp(type, "qt "))
1112  c->isom = 1;
1113  av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
1114  av_dict_set(&c->fc->metadata, "major_brand", type, 0);
1115  minor_ver = avio_rb32(pb); /* minor version */
1116  av_dict_set_int(&c->fc->metadata, "minor_version", minor_ver, 0);
1117 
1118  comp_brand_size = atom.size - 8;
1119  if (comp_brand_size < 0)
1120  return AVERROR_INVALIDDATA;
1121  comp_brands_str = av_malloc(comp_brand_size + 1); /* Add null terminator */
1122  if (!comp_brands_str)
1123  return AVERROR(ENOMEM);
1124 
1125  ret = ffio_read_size(pb, comp_brands_str, comp_brand_size);
1126  if (ret < 0) {
1127  av_freep(&comp_brands_str);
1128  return ret;
1129  }
1130  comp_brands_str[comp_brand_size] = 0;
1131  av_dict_set(&c->fc->metadata, "compatible_brands", comp_brands_str, 0);
1132  av_freep(&comp_brands_str);
1133 
1134  return 0;
1135 }
1136 
1137 /* this atom should contain all header atoms */
1139 {
1140  int ret;
1141 
1142  if (c->found_moov) {
1143  av_log(c->fc, AV_LOG_WARNING, "Found duplicated MOOV Atom. Skipped it\n");
1144  avio_skip(pb, atom.size);
1145  return 0;
1146  }
1147 
1148  if ((ret = mov_read_default(c, pb, atom)) < 0)
1149  return ret;
1150  /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
1151  /* so we don't parse the whole file if over a network */
1152  c->found_moov=1;
1153  return 0; /* now go for mdat */
1154 }
1155 
1157  MOVFragmentIndex *frag_index,
1158  int index,
1159  int id)
1160 {
1161  int i;
1162  MOVFragmentIndexItem * item;
1163 
1164  if (index < 0 || index >= frag_index->nb_items)
1165  return NULL;
1166  item = &frag_index->item[index];
1167  for (i = 0; i < item->nb_stream_info; i++)
1168  if (item->stream_info[i].id == id)
1169  return &item->stream_info[i];
1170 
1171  // This shouldn't happen
1172  return NULL;
1173 }
1174 
1175 static void set_frag_stream(MOVFragmentIndex *frag_index, int id)
1176 {
1177  int i;
1178  MOVFragmentIndexItem * item;
1179 
1180  if (frag_index->current < 0 ||
1181  frag_index->current >= frag_index->nb_items)
1182  return;
1183 
1184  item = &frag_index->item[frag_index->current];
1185  for (i = 0; i < item->nb_stream_info; i++)
1186  if (item->stream_info[i].id == id) {
1187  item->current = i;
1188  return;
1189  }
1190 
1191  // id not found. This shouldn't happen.
1192  item->current = -1;
1193 }
1194 
1196  MOVFragmentIndex *frag_index)
1197 {
1198  MOVFragmentIndexItem *item;
1199  if (frag_index->current < 0 ||
1200  frag_index->current >= frag_index->nb_items)
1201  return NULL;
1202 
1203  item = &frag_index->item[frag_index->current];
1204  if (item->current >= 0 && item->current < item->nb_stream_info)
1205  return &item->stream_info[item->current];
1206 
1207  // This shouldn't happen
1208  return NULL;
1209 }
1210 
1211 static int search_frag_moof_offset(MOVFragmentIndex *frag_index, int64_t offset)
1212 {
1213  int a, b, m;
1214  int64_t moof_offset;
1215 
1216  // Optimize for appending new entries
1217  if (!frag_index->nb_items ||
1218  frag_index->item[frag_index->nb_items - 1].moof_offset < offset)
1219  return frag_index->nb_items;
1220 
1221  a = -1;
1222  b = frag_index->nb_items;
1223 
1224  while (b - a > 1) {
1225  m = (a + b) >> 1;
1226  moof_offset = frag_index->item[m].moof_offset;
1227  if (moof_offset >= offset)
1228  b = m;
1229  if (moof_offset <= offset)
1230  a = m;
1231  }
1232  return b;
1233 }
1234 
1235 static int64_t get_stream_info_time(MOVFragmentStreamInfo * frag_stream_info)
1236 {
1237 
1238  if (frag_stream_info) {
1239  if (frag_stream_info->sidx_pts != AV_NOPTS_VALUE)
1240  return frag_stream_info->sidx_pts;
1241  if (frag_stream_info->first_tfra_pts != AV_NOPTS_VALUE)
1242  return frag_stream_info->first_tfra_pts;
1243  if (frag_stream_info->tfdt_dts != AV_NOPTS_VALUE)
1244  return frag_stream_info->tfdt_dts;
1245  }
1246  return AV_NOPTS_VALUE;
1247 }
1248 
1249 static int64_t get_frag_time(MOVFragmentIndex *frag_index,
1250  int index, int track_id)
1251 {
1252  MOVFragmentStreamInfo * frag_stream_info;
1253  int64_t timestamp;
1254  int i;
1255 
1256  if (track_id >= 0) {
1257  frag_stream_info = get_frag_stream_info(frag_index, index, track_id);
1258  return frag_stream_info->sidx_pts;
1259  }
1260 
1261  for (i = 0; i < frag_index->item[index].nb_stream_info; i++) {
1262  frag_stream_info = &frag_index->item[index].stream_info[i];
1263  timestamp = get_stream_info_time(frag_stream_info);
1264  if (timestamp != AV_NOPTS_VALUE)
1265  return timestamp;
1266  }
1267  return AV_NOPTS_VALUE;
1268 }
1269 
1271  AVStream *st, int64_t timestamp)
1272 {
1273  int a, b, m, m0;
1274  int64_t frag_time;
1275  int id = -1;
1276 
1277  if (st) {
1278  // If the stream is referenced by any sidx, limit the search
1279  // to fragments that referenced this stream in the sidx
1280  MOVStreamContext *sc = st->priv_data;
1281  if (sc->has_sidx)
1282  id = st->id;
1283  }
1284 
1285  a = -1;
1286  b = frag_index->nb_items;
1287 
1288  while (b - a > 1) {
1289  m0 = m = (a + b) >> 1;
1290 
1291  while (m < b &&
1292  (frag_time = get_frag_time(frag_index, m, id)) == AV_NOPTS_VALUE)
1293  m++;
1294 
1295  if (m < b && frag_time <= timestamp)
1296  a = m;
1297  else
1298  b = m0;
1299  }
1300 
1301  return a;
1302 }
1303 
1304 static int update_frag_index(MOVContext *c, int64_t offset)
1305 {
1306  int index, i;
1307  MOVFragmentIndexItem * item;
1308  MOVFragmentStreamInfo * frag_stream_info;
1309 
1310  // If moof_offset already exists in frag_index, return index to it
1311  index = search_frag_moof_offset(&c->frag_index, offset);
1312  if (index < c->frag_index.nb_items &&
1313  c->frag_index.item[index].moof_offset == offset)
1314  return index;
1315 
1316  // offset is not yet in frag index.
1317  // Insert new item at index (sorted by moof offset)
1318  item = av_fast_realloc(c->frag_index.item,
1320  (c->frag_index.nb_items + 1) *
1321  sizeof(*c->frag_index.item));
1322  if(!item)
1323  return -1;
1324  c->frag_index.item = item;
1325 
1326  frag_stream_info = av_realloc_array(NULL, c->fc->nb_streams,
1327  sizeof(*item->stream_info));
1328  if (!frag_stream_info)
1329  return -1;
1330 
1331  for (i = 0; i < c->fc->nb_streams; i++) {
1332  // Avoid building frag index if streams lack track id.
1333  if (c->fc->streams[i]->id < 0)
1334  return AVERROR_INVALIDDATA;
1335 
1336  frag_stream_info[i].id = c->fc->streams[i]->id;
1337  frag_stream_info[i].sidx_pts = AV_NOPTS_VALUE;
1338  frag_stream_info[i].tfdt_dts = AV_NOPTS_VALUE;
1339  frag_stream_info[i].first_tfra_pts = AV_NOPTS_VALUE;
1340  frag_stream_info[i].index_entry = -1;
1341  frag_stream_info[i].encryption_index = NULL;
1342  }
1343 
1344  if (index < c->frag_index.nb_items)
1345  memmove(c->frag_index.item + index + 1, c->frag_index.item + index,
1346  (c->frag_index.nb_items - index) * sizeof(*c->frag_index.item));
1347 
1348  item = &c->frag_index.item[index];
1349  item->headers_read = 0;
1350  item->current = 0;
1351  item->nb_stream_info = c->fc->nb_streams;
1352  item->moof_offset = offset;
1353  item->stream_info = frag_stream_info;
1354  c->frag_index.nb_items++;
1355 
1356  return index;
1357 }
1358 
1359 static void fix_frag_index_entries(MOVFragmentIndex *frag_index, int index,
1360  int id, int entries)
1361 {
1362  int i;
1363  MOVFragmentStreamInfo * frag_stream_info;
1364 
1365  if (index < 0)
1366  return;
1367  for (i = index; i < frag_index->nb_items; i++) {
1368  frag_stream_info = get_frag_stream_info(frag_index, i, id);
1369  if (frag_stream_info && frag_stream_info->index_entry >= 0)
1370  frag_stream_info->index_entry += entries;
1371  }
1372 }
1373 
1375 {
1376  // Set by mov_read_tfhd(). mov_read_trun() will reject files missing tfhd.
1377  c->fragment.found_tfhd = 0;
1378 
1379  if (!c->has_looked_for_mfra && c->use_mfra_for > 0) {
1380  c->has_looked_for_mfra = 1;
1381  if (pb->seekable & AVIO_SEEKABLE_NORMAL) {
1382  int ret;
1383  av_log(c->fc, AV_LOG_VERBOSE, "stream has moof boxes, will look "
1384  "for a mfra\n");
1385  if ((ret = mov_read_mfra(c, pb)) < 0) {
1386  av_log(c->fc, AV_LOG_VERBOSE, "found a moof box but failed to "
1387  "read the mfra (may be a live ismv)\n");
1388  }
1389  } else {
1390  av_log(c->fc, AV_LOG_VERBOSE, "found a moof box but stream is not "
1391  "seekable, can not look for mfra\n");
1392  }
1393  }
1395  av_log(c->fc, AV_LOG_TRACE, "moof offset %"PRIx64"\n", c->fragment.moof_offset);
1397  return mov_read_default(c, pb, atom);
1398 }
1399 
1400 static void mov_metadata_creation_time(AVDictionary **metadata, int64_t time)
1401 {
1402  if (time) {
1403  if(time >= 2082844800)
1404  time -= 2082844800; /* seconds between 1904-01-01 and Epoch */
1405 
1406  if ((int64_t)(time * 1000000ULL) / 1000000 != time) {
1407  av_log(NULL, AV_LOG_DEBUG, "creation_time is not representable\n");
1408  return;
1409  }
1410 
1411  avpriv_dict_set_timestamp(metadata, "creation_time", time * 1000000);
1412  }
1413 }
1414 
1416 {
1417  AVStream *st;
1418  MOVStreamContext *sc;
1419  int version;
1420  char language[4] = {0};
1421  unsigned lang;
1422  int64_t creation_time;
1423 
1424  if (c->fc->nb_streams < 1)
1425  return 0;
1426  st = c->fc->streams[c->fc->nb_streams-1];
1427  sc = st->priv_data;
1428 
1429  if (sc->time_scale) {
1430  av_log(c->fc, AV_LOG_ERROR, "Multiple mdhd?\n");
1431  return AVERROR_INVALIDDATA;
1432  }
1433 
1434  version = avio_r8(pb);
1435  if (version > 1) {
1436  avpriv_request_sample(c->fc, "Version %d", version);
1437  return AVERROR_PATCHWELCOME;
1438  }
1439  avio_rb24(pb); /* flags */
1440  if (version == 1) {
1441  creation_time = avio_rb64(pb);
1442  avio_rb64(pb);
1443  } else {
1444  creation_time = avio_rb32(pb);
1445  avio_rb32(pb); /* modification time */
1446  }
1447  mov_metadata_creation_time(&st->metadata, creation_time);
1448 
1449  sc->time_scale = avio_rb32(pb);
1450  if (sc->time_scale <= 0) {
1451  av_log(c->fc, AV_LOG_ERROR, "Invalid mdhd time scale %d, defaulting to 1\n", sc->time_scale);
1452  sc->time_scale = 1;
1453  }
1454  st->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
1455 
1456  lang = avio_rb16(pb); /* language */
1457  if (ff_mov_lang_to_iso639(lang, language))
1458  av_dict_set(&st->metadata, "language", language, 0);
1459  avio_rb16(pb); /* quality */
1460 
1461  return 0;
1462 }
1463 
1465 {
1466  int i;
1467  int64_t creation_time;
1468  int version = avio_r8(pb); /* version */
1469  avio_rb24(pb); /* flags */
1470 
1471  if (version == 1) {
1472  creation_time = avio_rb64(pb);
1473  avio_rb64(pb);
1474  } else {
1475  creation_time = avio_rb32(pb);
1476  avio_rb32(pb); /* modification time */
1477  }
1478  mov_metadata_creation_time(&c->fc->metadata, creation_time);
1479  c->time_scale = avio_rb32(pb); /* time scale */
1480  if (c->time_scale <= 0) {
1481  av_log(c->fc, AV_LOG_ERROR, "Invalid mvhd time scale %d, defaulting to 1\n", c->time_scale);
1482  c->time_scale = 1;
1483  }
1484  av_log(c->fc, AV_LOG_TRACE, "time scale = %i\n", c->time_scale);
1485 
1486  c->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
1487  // set the AVCodecContext duration because the duration of individual tracks
1488  // may be inaccurate
1489  if (c->time_scale > 0 && !c->trex_data)
1491  avio_rb32(pb); /* preferred scale */
1492 
1493  avio_rb16(pb); /* preferred volume */
1494 
1495  avio_skip(pb, 10); /* reserved */
1496 
1497  /* movie display matrix, store it in main context and use it later on */
1498  for (i = 0; i < 3; i++) {
1499  c->movie_display_matrix[i][0] = avio_rb32(pb); // 16.16 fixed point
1500  c->movie_display_matrix[i][1] = avio_rb32(pb); // 16.16 fixed point
1501  c->movie_display_matrix[i][2] = avio_rb32(pb); // 2.30 fixed point
1502  }
1503 
1504  avio_rb32(pb); /* preview time */
1505  avio_rb32(pb); /* preview duration */
1506  avio_rb32(pb); /* poster time */
1507  avio_rb32(pb); /* selection time */
1508  avio_rb32(pb); /* selection duration */
1509  avio_rb32(pb); /* current time */
1510  avio_rb32(pb); /* next track ID */
1511 
1512  return 0;
1513 }
1514 
1516 {
1517  AVStream *st;
1518  int little_endian;
1519 
1520  if (c->fc->nb_streams < 1)
1521  return 0;
1522  st = c->fc->streams[c->fc->nb_streams-1];
1523 
1524  little_endian = avio_rb16(pb) & 0xFF;
1525  av_log(c->fc, AV_LOG_TRACE, "enda %d\n", little_endian);
1526  if (little_endian == 1) {
1527  switch (st->codecpar->codec_id) {
1528  case AV_CODEC_ID_PCM_S24BE:
1530  break;
1531  case AV_CODEC_ID_PCM_S32BE:
1533  break;
1534  case AV_CODEC_ID_PCM_F32BE:
1536  break;
1537  case AV_CODEC_ID_PCM_F64BE:
1539  break;
1540  default:
1541  break;
1542  }
1543  }
1544  return 0;
1545 }
1546 
1548 {
1549  AVStream *st;
1550  char color_parameter_type[5] = { 0 };
1551  uint16_t color_primaries, color_trc, color_matrix;
1552  int ret;
1553 
1554  if (c->fc->nb_streams < 1)
1555  return 0;
1556  st = c->fc->streams[c->fc->nb_streams - 1];
1557 
1558  ret = ffio_read_size(pb, color_parameter_type, 4);
1559  if (ret < 0)
1560  return ret;
1561  if (strncmp(color_parameter_type, "nclx", 4) &&
1562  strncmp(color_parameter_type, "nclc", 4)) {
1563  av_log(c->fc, AV_LOG_WARNING, "unsupported color_parameter_type %s\n",
1564  color_parameter_type);
1565  return 0;
1566  }
1567 
1568  color_primaries = avio_rb16(pb);
1569  color_trc = avio_rb16(pb);
1570  color_matrix = avio_rb16(pb);
1571 
1572  av_log(c->fc, AV_LOG_TRACE,
1573  "%s: pri %d trc %d matrix %d",
1574  color_parameter_type, color_primaries, color_trc, color_matrix);
1575 
1576  if (!strncmp(color_parameter_type, "nclx", 4)) {
1577  uint8_t color_range = avio_r8(pb) >> 7;
1578  av_log(c->fc, AV_LOG_TRACE, " full %"PRIu8"", color_range);
1579  if (color_range)
1581  else
1583  }
1584 
1585  if (!av_color_primaries_name(color_primaries))
1586  color_primaries = AVCOL_PRI_UNSPECIFIED;
1587  if (!av_color_transfer_name(color_trc))
1588  color_trc = AVCOL_TRC_UNSPECIFIED;
1589  if (!av_color_space_name(color_matrix))
1590  color_matrix = AVCOL_SPC_UNSPECIFIED;
1591 
1593  st->codecpar->color_trc = color_trc;
1594  st->codecpar->color_space = color_matrix;
1595  av_log(c->fc, AV_LOG_TRACE, "\n");
1596 
1597  return 0;
1598 }
1599 
1601 {
1602  AVStream *st;
1603  unsigned mov_field_order;
1604  enum AVFieldOrder decoded_field_order = AV_FIELD_UNKNOWN;
1605 
1606  if (c->fc->nb_streams < 1) // will happen with jp2 files
1607  return 0;
1608  st = c->fc->streams[c->fc->nb_streams-1];
1609  if (atom.size < 2)
1610  return AVERROR_INVALIDDATA;
1611  mov_field_order = avio_rb16(pb);
1612  if ((mov_field_order & 0xFF00) == 0x0100)
1613  decoded_field_order = AV_FIELD_PROGRESSIVE;
1614  else if ((mov_field_order & 0xFF00) == 0x0200) {
1615  switch (mov_field_order & 0xFF) {
1616  case 0x01: decoded_field_order = AV_FIELD_TT;
1617  break;
1618  case 0x06: decoded_field_order = AV_FIELD_BB;
1619  break;
1620  case 0x09: decoded_field_order = AV_FIELD_TB;
1621  break;
1622  case 0x0E: decoded_field_order = AV_FIELD_BT;
1623  break;
1624  }
1625  }
1626  if (decoded_field_order == AV_FIELD_UNKNOWN && mov_field_order) {
1627  av_log(NULL, AV_LOG_ERROR, "Unknown MOV field order 0x%04x\n", mov_field_order);
1628  }
1629  st->codecpar->field_order = decoded_field_order;
1630 
1631  return 0;
1632 }
1633 
1635 {
1636  int err = 0;
1637  uint64_t size = (uint64_t)par->extradata_size + atom.size + 8 + AV_INPUT_BUFFER_PADDING_SIZE;
1638  if (size > INT_MAX || (uint64_t)atom.size > INT_MAX)
1639  return AVERROR_INVALIDDATA;
1640  if ((err = av_reallocp(&par->extradata, size)) < 0) {
1641  par->extradata_size = 0;
1642  return err;
1643  }
1645  return 0;
1646 }
1647 
1648 /* Read a whole atom into the extradata return the size of the atom read, possibly truncated if != atom.size */
1650  AVCodecParameters *par, uint8_t *buf)
1651 {
1652  int64_t result = atom.size;
1653  int err;
1654 
1655  AV_WB32(buf , atom.size + 8);
1656  AV_WL32(buf + 4, atom.type);
1657  err = ffio_read_size(pb, buf + 8, atom.size);
1658  if (err < 0) {
1659  par->extradata_size -= atom.size;
1660  return err;
1661  } else if (err < atom.size) {
1662  av_log(c->fc, AV_LOG_WARNING, "truncated extradata\n");
1663  par->extradata_size -= atom.size - err;
1664  result = err;
1665  }
1666  memset(buf + 8 + err, 0, AV_INPUT_BUFFER_PADDING_SIZE);
1667  return result;
1668 }
1669 
1670 /* FIXME modify QDM2/SVQ3/H.264 decoders to take full atom as extradata */
1672  enum AVCodecID codec_id)
1673 {
1674  AVStream *st;
1675  uint64_t original_size;
1676  int err;
1677 
1678  if (c->fc->nb_streams < 1) // will happen with jp2 files
1679  return 0;
1680  st = c->fc->streams[c->fc->nb_streams-1];
1681 
1682  if (st->codecpar->codec_id != codec_id)
1683  return 0; /* unexpected codec_id - don't mess with extradata */
1684 
1685  original_size = st->codecpar->extradata_size;
1686  err = mov_realloc_extradata(st->codecpar, atom);
1687  if (err)
1688  return err;
1689 
1690  err = mov_read_atom_into_extradata(c, pb, atom, st->codecpar, st->codecpar->extradata + original_size);
1691  if (err < 0)
1692  return err;
1693  return 0; // Note: this is the original behavior to ignore truncation.
1694 }
1695 
1696 /* wrapper functions for reading ALAC/AVS/MJPEG/MJPEG2000 extradata atoms only for those codecs */
1698 {
1699  return mov_read_extradata(c, pb, atom, AV_CODEC_ID_ALAC);
1700 }
1701 
1703 {
1704  return mov_read_extradata(c, pb, atom, AV_CODEC_ID_AVS);
1705 }
1706 
1708 {
1709  return mov_read_extradata(c, pb, atom, AV_CODEC_ID_JPEG2000);
1710 }
1711 
1713 {
1714  return mov_read_extradata(c, pb, atom, AV_CODEC_ID_R10K);
1715 }
1716 
1718 {
1719  int ret = mov_read_extradata(c, pb, atom, AV_CODEC_ID_AVUI);
1720  if(ret == 0)
1721  ret = mov_read_extradata(c, pb, atom, AV_CODEC_ID_DNXHD);
1722  return ret;
1723 }
1724 
1726 {
1727  int ret = mov_read_extradata(c, pb, atom, AV_CODEC_ID_TARGA_Y216);
1728 
1729  if (!ret && c->fc->nb_streams >= 1) {
1730  AVCodecParameters *par = c->fc->streams[c->fc->nb_streams-1]->codecpar;
1731  if (par->extradata_size >= 40) {
1732  par->height = AV_RB16(&par->extradata[36]);
1733  par->width = AV_RB16(&par->extradata[38]);
1734  }
1735  }
1736  return ret;
1737 }
1738 
1740 {
1741  if (c->fc->nb_streams >= 1) {
1742  AVCodecParameters *par = c->fc->streams[c->fc->nb_streams-1]->codecpar;
1743  if (par->codec_tag == MKTAG('A', 'V', 'i', 'n') &&
1744  par->codec_id == AV_CODEC_ID_H264 &&
1745  atom.size > 11) {
1746  int cid;
1747  avio_skip(pb, 10);
1748  cid = avio_rb16(pb);
1749  /* For AVID AVCI50, force width of 1440 to be able to select the correct SPS and PPS */
1750  if (cid == 0xd4d || cid == 0xd4e)
1751  par->width = 1440;
1752  return 0;
1753  } else if ((par->codec_tag == MKTAG('A', 'V', 'd', '1') ||
1754  par->codec_tag == MKTAG('A', 'V', 'j', '2') ||
1755  par->codec_tag == MKTAG('A', 'V', 'd', 'n')) &&
1756  atom.size >= 24) {
1757  int num, den;
1758  avio_skip(pb, 12);
1759  num = avio_rb32(pb);
1760  den = avio_rb32(pb);
1761  if (num <= 0 || den <= 0)
1762  return 0;
1763  switch (avio_rb32(pb)) {
1764  case 2:
1765  if (den >= INT_MAX / 2)
1766  return 0;
1767  den *= 2;
1768  case 1:
1769  c->fc->streams[c->fc->nb_streams-1]->display_aspect_ratio.num = num;
1770  c->fc->streams[c->fc->nb_streams-1]->display_aspect_ratio.den = den;
1771  default:
1772  return 0;
1773  }
1774  }
1775  }
1776 
1777  return mov_read_avid(c, pb, atom);
1778 }
1779 
1781 {
1782  int ret = 0;
1783  int length = 0;
1784  uint64_t original_size;
1785  if (c->fc->nb_streams >= 1) {
1786  AVCodecParameters *par = c->fc->streams[c->fc->nb_streams-1]->codecpar;
1787  if (par->codec_id == AV_CODEC_ID_H264)
1788  return 0;
1789  if (atom.size == 16) {
1790  original_size = par->extradata_size;
1791  ret = mov_realloc_extradata(par, atom);
1792  if (!ret) {
1793  length = mov_read_atom_into_extradata(c, pb, atom, par, par->extradata + original_size);
1794  if (length == atom.size) {
1795  const uint8_t range_value = par->extradata[original_size + 19];
1796  switch (range_value) {
1797  case 1:
1799  break;
1800  case 2:
1802  break;
1803  default:
1804  av_log(c, AV_LOG_WARNING, "ignored unknown aclr value (%d)\n", range_value);
1805  break;
1806  }
1807  ff_dlog(c, "color_range: %d\n", par->color_range);
1808  } else {
1809  /* For some reason the whole atom was not added to the extradata */
1810  av_log(c, AV_LOG_ERROR, "aclr not decoded - incomplete atom\n");
1811  }
1812  } else {
1813  av_log(c, AV_LOG_ERROR, "aclr not decoded - unable to add atom to extradata\n");
1814  }
1815  } else {
1816  av_log(c, AV_LOG_WARNING, "aclr not decoded - unexpected size %"PRId64"\n", atom.size);
1817  }
1818  }
1819 
1820  return ret;
1821 }
1822 
1824 {
1825  return mov_read_extradata(c, pb, atom, AV_CODEC_ID_SVQ3);
1826 }
1827 
1829 {
1830  AVStream *st;
1831  int ret;
1832 
1833  if (c->fc->nb_streams < 1)
1834  return 0;
1835  st = c->fc->streams[c->fc->nb_streams-1];
1836 
1837  if ((uint64_t)atom.size > (1<<30))
1838  return AVERROR_INVALIDDATA;
1839 
1840  if (st->codecpar->codec_id == AV_CODEC_ID_QDM2 ||
1843  // pass all frma atom to codec, needed at least for QDMC and QDM2
1844  av_freep(&st->codecpar->extradata);
1845  ret = ff_get_extradata(c->fc, st->codecpar, pb, atom.size);
1846  if (ret < 0)
1847  return ret;
1848  } else if (atom.size > 8) { /* to read frma, esds atoms */
1849  if (st->codecpar->codec_id == AV_CODEC_ID_ALAC && atom.size >= 24) {
1850  uint64_t buffer;
1851  ret = ffio_ensure_seekback(pb, 8);
1852  if (ret < 0)
1853  return ret;
1854  buffer = avio_rb64(pb);
1855  atom.size -= 8;
1856  if ( (buffer & 0xFFFFFFFF) == MKBETAG('f','r','m','a')
1857  && buffer >> 32 <= atom.size
1858  && buffer >> 32 >= 8) {
1859  avio_skip(pb, -8);
1860  atom.size += 8;
1861  } else if (!st->codecpar->extradata_size) {
1862 #define ALAC_EXTRADATA_SIZE 36
1864  if (!st->codecpar->extradata)
1865  return AVERROR(ENOMEM);
1868  AV_WB32(st->codecpar->extradata + 4, MKTAG('a','l','a','c'));
1869  AV_WB64(st->codecpar->extradata + 12, buffer);
1870  avio_read(pb, st->codecpar->extradata + 20, 16);
1871  avio_skip(pb, atom.size - 24);
1872  return 0;
1873  }
1874  }
1875  if ((ret = mov_read_default(c, pb, atom)) < 0)
1876  return ret;
1877  } else
1878  avio_skip(pb, atom.size);
1879  return 0;
1880 }
1881 
1882 /**
1883  * This function reads atom content and puts data in extradata without tag
1884  * nor size unlike mov_read_extradata.
1885  */
1887 {
1888  AVStream *st;
1889  int ret;
1890 
1891  if (c->fc->nb_streams < 1)
1892  return 0;
1893  st = c->fc->streams[c->fc->nb_streams-1];
1894 
1895  if ((uint64_t)atom.size > (1<<30))
1896  return AVERROR_INVALIDDATA;
1897 
1898  if (atom.size >= 10) {
1899  // Broken files created by legacy versions of libavformat will
1900  // wrap a whole fiel atom inside of a glbl atom.
1901  unsigned size = avio_rb32(pb);
1902  unsigned type = avio_rl32(pb);
1903  avio_seek(pb, -8, SEEK_CUR);
1904  if (type == MKTAG('f','i','e','l') && size == atom.size)
1905  return mov_read_default(c, pb, atom);
1906  }
1907  if (st->codecpar->extradata_size > 1 && st->codecpar->extradata) {
1908  av_log(c, AV_LOG_WARNING, "ignoring multiple glbl\n");
1909  return 0;
1910  }
1911  av_freep(&st->codecpar->extradata);
1912  ret = ff_get_extradata(c->fc, st->codecpar, pb, atom.size);
1913  if (ret < 0)
1914  return ret;
1915  if (atom.type == MKTAG('h','v','c','C') && st->codecpar->codec_tag == MKTAG('d','v','h','1'))
1917 
1918  return 0;
1919 }
1920 
1922 {
1923  AVStream *st;
1924  uint8_t profile_level;
1925  int ret;
1926 
1927  if (c->fc->nb_streams < 1)
1928  return 0;
1929  st = c->fc->streams[c->fc->nb_streams-1];
1930 
1931  if (atom.size >= (1<<28) || atom.size < 7)
1932  return AVERROR_INVALIDDATA;
1933 
1934  profile_level = avio_r8(pb);
1935  if ((profile_level & 0xf0) != 0xc0)
1936  return 0;
1937 
1938  avio_seek(pb, 6, SEEK_CUR);
1939  av_freep(&st->codecpar->extradata);
1940  ret = ff_get_extradata(c->fc, st->codecpar, pb, atom.size - 7);
1941  if (ret < 0)
1942  return ret;
1943 
1944  return 0;
1945 }
1946 
1947 /**
1948  * An strf atom is a BITMAPINFOHEADER struct. This struct is 40 bytes itself,
1949  * but can have extradata appended at the end after the 40 bytes belonging
1950  * to the struct.
1951  */
1953 {
1954  AVStream *st;
1955  int ret;
1956 
1957  if (c->fc->nb_streams < 1)
1958  return 0;
1959  if (atom.size <= 40)
1960  return 0;
1961  st = c->fc->streams[c->fc->nb_streams-1];
1962 
1963  if ((uint64_t)atom.size > (1<<30))
1964  return AVERROR_INVALIDDATA;
1965 
1966  avio_skip(pb, 40);
1967  av_freep(&st->codecpar->extradata);
1968  ret = ff_get_extradata(c->fc, st->codecpar, pb, atom.size - 40);
1969  if (ret < 0)
1970  return ret;
1971 
1972  return 0;
1973 }
1974 
1976 {
1977  AVStream *st;
1978  MOVStreamContext *sc;
1979  unsigned int i, entries;
1980 
1981  if (c->fc->nb_streams < 1)
1982  return 0;
1983  st = c->fc->streams[c->fc->nb_streams-1];
1984  sc = st->priv_data;
1985 
1986  avio_r8(pb); /* version */
1987  avio_rb24(pb); /* flags */
1988 
1989  entries = avio_rb32(pb);
1990 
1991  if (!entries)
1992  return 0;
1993 
1994  if (sc->chunk_offsets)
1995  av_log(c->fc, AV_LOG_WARNING, "Duplicated STCO atom\n");
1996  av_free(sc->chunk_offsets);
1997  sc->chunk_count = 0;
1998  sc->chunk_offsets = av_malloc_array(entries, sizeof(*sc->chunk_offsets));
1999  if (!sc->chunk_offsets)
2000  return AVERROR(ENOMEM);
2001  sc->chunk_count = entries;
2002 
2003  if (atom.type == MKTAG('s','t','c','o'))
2004  for (i = 0; i < entries && !pb->eof_reached; i++)
2005  sc->chunk_offsets[i] = avio_rb32(pb);
2006  else if (atom.type == MKTAG('c','o','6','4'))
2007  for (i = 0; i < entries && !pb->eof_reached; i++)
2008  sc->chunk_offsets[i] = avio_rb64(pb);
2009  else
2010  return AVERROR_INVALIDDATA;
2011 
2012  sc->chunk_count = i;
2013 
2014  if (pb->eof_reached) {
2015  av_log(c->fc, AV_LOG_WARNING, "reached eof, corrupted STCO atom\n");
2016  return AVERROR_EOF;
2017  }
2018 
2019  return 0;
2020 }
2021 
2022 static int mov_codec_id(AVStream *st, uint32_t format)
2023 {
2024  int id = ff_codec_get_id(ff_codec_movaudio_tags, format);
2025 
2026  if (id <= 0 &&
2027  ((format & 0xFFFF) == 'm' + ('s' << 8) ||
2028  (format & 0xFFFF) == 'T' + ('S' << 8)))
2029  id = ff_codec_get_id(ff_codec_wav_tags, av_bswap32(format) & 0xFFFF);
2030 
2031  if (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO && id > 0) {
2033  } else if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO &&
2034  /* skip old ASF MPEG-4 tag */
2035  format && format != MKTAG('m','p','4','s')) {
2037  if (id <= 0)
2038  id = ff_codec_get_id(ff_codec_bmp_tags, format);
2039  if (id > 0)
2041  else if (st->codecpar->codec_type == AVMEDIA_TYPE_DATA ||
2043  st->codecpar->codec_id == AV_CODEC_ID_NONE)) {
2045  if (id > 0)
2047  else
2048  id = ff_codec_get_id(ff_codec_movdata_tags, format);
2049  }
2050  }
2051 
2052  st->codecpar->codec_tag = format;
2053 
2054  return id;
2055 }
2056 
2058  AVStream *st, MOVStreamContext *sc)
2059 {
2060  uint8_t codec_name[32] = { 0 };
2061  int64_t stsd_start;
2062  unsigned int len;
2063 
2064  /* The first 16 bytes of the video sample description are already
2065  * read in ff_mov_read_stsd_entries() */
2066  stsd_start = avio_tell(pb) - 16;
2067 
2068  avio_rb16(pb); /* version */
2069  avio_rb16(pb); /* revision level */
2070  avio_rb32(pb); /* vendor */
2071  avio_rb32(pb); /* temporal quality */
2072  avio_rb32(pb); /* spatial quality */
2073 
2074  st->codecpar->width = avio_rb16(pb); /* width */
2075  st->codecpar->height = avio_rb16(pb); /* height */
2076 
2077  avio_rb32(pb); /* horiz resolution */
2078  avio_rb32(pb); /* vert resolution */
2079  avio_rb32(pb); /* data size, always 0 */
2080  avio_rb16(pb); /* frames per samples */
2081 
2082  len = avio_r8(pb); /* codec name, pascal string */
2083  if (len > 31)
2084  len = 31;
2085  mov_read_mac_string(c, pb, len, codec_name, sizeof(codec_name));
2086  if (len < 31)
2087  avio_skip(pb, 31 - len);
2088 
2089  if (codec_name[0])
2090  av_dict_set(&st->metadata, "encoder", codec_name, 0);
2091 
2092  /* codec_tag YV12 triggers an UV swap in rawdec.c */
2093  if (!strncmp(codec_name, "Planar Y'CbCr 8-bit 4:2:0", 25)) {
2094  st->codecpar->codec_tag = MKTAG('I', '4', '2', '0');
2095  st->codecpar->width &= ~1;
2096  st->codecpar->height &= ~1;
2097  }
2098  /* Flash Media Server uses tag H.263 with Sorenson Spark */
2099  if (st->codecpar->codec_tag == MKTAG('H','2','6','3') &&
2100  !strncmp(codec_name, "Sorenson H263", 13))
2102 
2103  st->codecpar->bits_per_coded_sample = avio_rb16(pb); /* depth */
2104 
2105  avio_seek(pb, stsd_start, SEEK_SET);
2106 
2107  if (ff_get_qtpalette(st->codecpar->codec_id, pb, sc->palette)) {
2108  st->codecpar->bits_per_coded_sample &= 0x1F;
2109  sc->has_palette = 1;
2110  }
2111 }
2112 
2114  AVStream *st, MOVStreamContext *sc)
2115 {
2116  int bits_per_sample, flags;
2117  uint16_t version = avio_rb16(pb);
2118  AVDictionaryEntry *compatible_brands = av_dict_get(c->fc->metadata, "compatible_brands", NULL, AV_DICT_MATCH_CASE);
2119 
2120  avio_rb16(pb); /* revision level */
2121  avio_rb32(pb); /* vendor */
2122 
2123  st->codecpar->channels = avio_rb16(pb); /* channel count */
2124  st->codecpar->bits_per_coded_sample = avio_rb16(pb); /* sample size */
2125  av_log(c->fc, AV_LOG_TRACE, "audio channels %d\n", st->codecpar->channels);
2126 
2127  sc->audio_cid = avio_rb16(pb);
2128  avio_rb16(pb); /* packet size = 0 */
2129 
2130  st->codecpar->sample_rate = ((avio_rb32(pb) >> 16));
2131 
2132  // Read QT version 1 fields. In version 0 these do not exist.
2133  av_log(c->fc, AV_LOG_TRACE, "version =%d, isom =%d\n", version, c->isom);
2134  if (!c->isom ||
2135  (compatible_brands && strstr(compatible_brands->value, "qt ")) ||
2136  (sc->stsd_version == 0 && version > 0)) {
2137  if (version == 1) {
2138  sc->samples_per_frame = avio_rb32(pb);
2139  avio_rb32(pb); /* bytes per packet */
2140  sc->bytes_per_frame = avio_rb32(pb);
2141  avio_rb32(pb); /* bytes per sample */
2142  } else if (version == 2) {
2143  avio_rb32(pb); /* sizeof struct only */
2145  st->codecpar->channels = avio_rb32(pb);
2146  avio_rb32(pb); /* always 0x7F000000 */
2148 
2149  flags = avio_rb32(pb); /* lpcm format specific flag */
2150  sc->bytes_per_frame = avio_rb32(pb);
2151  sc->samples_per_frame = avio_rb32(pb);
2152  if (st->codecpar->codec_tag == MKTAG('l','p','c','m'))
2153  st->codecpar->codec_id =
2155  flags);
2156  }
2157  if (version == 0 || (version == 1 && sc->audio_cid != -2)) {
2158  /* can't correctly handle variable sized packet as audio unit */
2159  switch (st->codecpar->codec_id) {
2160  case AV_CODEC_ID_MP2:
2161  case AV_CODEC_ID_MP3:
2163  break;
2164  }
2165  }
2166  }
2167 
2168  if (sc->format == 0) {
2169  if (st->codecpar->bits_per_coded_sample == 8)
2170  st->codecpar->codec_id = mov_codec_id(st, MKTAG('r','a','w',' '));
2171  else if (st->codecpar->bits_per_coded_sample == 16)
2172  st->codecpar->codec_id = mov_codec_id(st, MKTAG('t','w','o','s'));
2173  }
2174 
2175  switch (st->codecpar->codec_id) {
2176  case AV_CODEC_ID_PCM_S8:
2177  case AV_CODEC_ID_PCM_U8:
2178  if (st->codecpar->bits_per_coded_sample == 16)
2180  break;
2181  case AV_CODEC_ID_PCM_S16LE:
2182  case AV_CODEC_ID_PCM_S16BE:
2183  if (st->codecpar->bits_per_coded_sample == 8)
2185  else if (st->codecpar->bits_per_coded_sample == 24)
2186  st->codecpar->codec_id =
2189  else if (st->codecpar->bits_per_coded_sample == 32)
2190  st->codecpar->codec_id =
2193  break;
2194  /* set values for old format before stsd version 1 appeared */
2195  case AV_CODEC_ID_MACE3:
2196  sc->samples_per_frame = 6;
2197  sc->bytes_per_frame = 2 * st->codecpar->channels;
2198  break;
2199  case AV_CODEC_ID_MACE6:
2200  sc->samples_per_frame = 6;
2201  sc->bytes_per_frame = 1 * st->codecpar->channels;
2202  break;
2204  sc->samples_per_frame = 64;
2205  sc->bytes_per_frame = 34 * st->codecpar->channels;
2206  break;
2207  case AV_CODEC_ID_GSM:
2208  sc->samples_per_frame = 160;
2209  sc->bytes_per_frame = 33;
2210  break;
2211  default:
2212  break;
2213  }
2214 
2215  bits_per_sample = av_get_bits_per_sample(st->codecpar->codec_id);
2216  if (bits_per_sample) {
2217  st->codecpar->bits_per_coded_sample = bits_per_sample;
2218  sc->sample_size = (bits_per_sample >> 3) * st->codecpar->channels;
2219  }
2220 }
2221 
2223  AVStream *st, MOVStreamContext *sc,
2224  int64_t size)
2225 {
2226  // ttxt stsd contains display flags, justification, background
2227  // color, fonts, and default styles, so fake an atom to read it
2228  MOVAtom fake_atom = { .size = size };
2229  // mp4s contains a regular esds atom
2230  if (st->codecpar->codec_tag != AV_RL32("mp4s"))
2231  mov_read_glbl(c, pb, fake_atom);
2232  st->codecpar->width = sc->width;
2233  st->codecpar->height = sc->height;
2234 }
2235 
2236 static uint32_t yuv_to_rgba(uint32_t ycbcr)
2237 {
2238  uint8_t r, g, b;
2239  int y, cb, cr;
2240 
2241  y = (ycbcr >> 16) & 0xFF;
2242  cr = (ycbcr >> 8) & 0xFF;
2243  cb = ycbcr & 0xFF;
2244 
2245  b = av_clip_uint8((1164 * (y - 16) + 2018 * (cb - 128)) / 1000);
2246  g = av_clip_uint8((1164 * (y - 16) - 813 * (cr - 128) - 391 * (cb - 128)) / 1000);
2247  r = av_clip_uint8((1164 * (y - 16) + 1596 * (cr - 128) ) / 1000);
2248 
2249  return (r << 16) | (g << 8) | b;
2250 }
2251 
2253 {
2254  char buf[256] = {0};
2255  uint8_t *src = st->codecpar->extradata;
2256  int i;
2257 
2258  if (st->codecpar->extradata_size != 64)
2259  return 0;
2260 
2261  if (st->codecpar->width > 0 && st->codecpar->height > 0)
2262  snprintf(buf, sizeof(buf), "size: %dx%d\n",
2263  st->codecpar->width, st->codecpar->height);
2264  av_strlcat(buf, "palette: ", sizeof(buf));
2265 
2266  for (i = 0; i < 16; i++) {
2267  uint32_t yuv = AV_RB32(src + i * 4);
2268  uint32_t rgba = yuv_to_rgba(yuv);
2269 
2270  av_strlcatf(buf, sizeof(buf), "%06"PRIx32"%s", rgba, i != 15 ? ", " : "");
2271  }
2272 
2273  if (av_strlcat(buf, "\n", sizeof(buf)) >= sizeof(buf))
2274  return 0;
2275 
2276  av_freep(&st->codecpar->extradata);
2277  st->codecpar->extradata_size = 0;
2279  if (!st->codecpar->extradata)
2280  return AVERROR(ENOMEM);
2281  st->codecpar->extradata_size = strlen(buf);
2282  memcpy(st->codecpar->extradata, buf, st->codecpar->extradata_size);
2283 
2284  return 0;
2285 }
2286 
2288  AVStream *st, MOVStreamContext *sc,
2289  int64_t size)
2290 {
2291  int ret;
2292 
2293  if (st->codecpar->codec_tag == MKTAG('t','m','c','d')) {
2294  if ((int)size != size)
2295  return AVERROR(ENOMEM);
2296 
2297  ret = ff_get_extradata(c->fc, st->codecpar, pb, size);
2298  if (ret < 0)
2299  return ret;
2300  if (size > 16) {
2301  MOVStreamContext *tmcd_ctx = st->priv_data;
2302  int val;
2303  val = AV_RB32(st->codecpar->extradata + 4);
2304  tmcd_ctx->tmcd_flags = val;
2305  st->avg_frame_rate.num = st->codecpar->extradata[16]; /* number of frame */
2306  st->avg_frame_rate.den = 1;
2307 #if FF_API_LAVF_AVCTX
2309  st->codec->time_base = av_inv_q(st->avg_frame_rate);
2311 #endif
2312  /* adjust for per frame dur in counter mode */
2313  if (tmcd_ctx->tmcd_flags & 0x0008) {
2314  int timescale = AV_RB32(st->codecpar->extradata + 8);
2315  int framedur = AV_RB32(st->codecpar->extradata + 12);
2316  st->avg_frame_rate.num *= timescale;
2317  st->avg_frame_rate.den *= framedur;
2318 #if FF_API_LAVF_AVCTX
2320  st->codec->time_base.den *= timescale;
2321  st->codec->time_base.num *= framedur;
2323 #endif
2324  }
2325  if (size > 30) {
2326  uint32_t len = AV_RB32(st->codecpar->extradata + 18); /* name atom length */
2327  uint32_t format = AV_RB32(st->codecpar->extradata + 22);
2328  if (format == AV_RB32("name") && (int64_t)size >= (int64_t)len + 18) {
2329  uint16_t str_size = AV_RB16(st->codecpar->extradata + 26); /* string length */
2330  if (str_size > 0 && size >= (int)str_size + 26) {
2331  char *reel_name = av_malloc(str_size + 1);
2332  if (!reel_name)
2333  return AVERROR(ENOMEM);
2334  memcpy(reel_name, st->codecpar->extradata + 30, str_size);
2335  reel_name[str_size] = 0; /* Add null terminator */
2336  /* don't add reel_name if emtpy string */
2337  if (*reel_name == 0) {
2338  av_free(reel_name);
2339  } else {
2340  av_dict_set(&st->metadata, "reel_name", reel_name, AV_DICT_DONT_STRDUP_VAL);
2341  }
2342  }
2343  }
2344  }
2345  }
2346  } else {
2347  /* other codec type, just skip (rtp, mp4s ...) */
2348  avio_skip(pb, size);
2349  }
2350  return 0;
2351 }
2352 
2354  AVStream *st, MOVStreamContext *sc)
2355 {
2356  if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
2357  !st->codecpar->sample_rate && sc->time_scale > 1)
2358  st->codecpar->sample_rate = sc->time_scale;
2359 
2360  /* special codec parameters handling */
2361  switch (st->codecpar->codec_id) {
2362 #if CONFIG_DV_DEMUXER
2363  case AV_CODEC_ID_DVAUDIO:
2365  if (!c->dv_fctx) {
2366  av_log(c->fc, AV_LOG_ERROR, "dv demux context alloc error\n");
2367  return AVERROR(ENOMEM);
2368  }
2370  if (!c->dv_demux) {
2371  av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
2372  return AVERROR(ENOMEM);
2373  }
2374  sc->dv_audio_container = 1;
2376  break;
2377 #endif
2378  /* no ifdef since parameters are always those */
2379  case AV_CODEC_ID_QCELP:
2380  st->codecpar->channels = 1;
2381  // force sample rate for qcelp when not stored in mov
2382  if (st->codecpar->codec_tag != MKTAG('Q','c','l','p'))
2383  st->codecpar->sample_rate = 8000;
2384  // FIXME: Why is the following needed for some files?
2385  sc->samples_per_frame = 160;
2386  if (!sc->bytes_per_frame)
2387  sc->bytes_per_frame = 35;
2388  break;
2389  case AV_CODEC_ID_AMR_NB:
2390  st->codecpar->channels = 1;
2391  /* force sample rate for amr, stsd in 3gp does not store sample rate */
2392  st->codecpar->sample_rate = 8000;
2393  break;
2394  case AV_CODEC_ID_AMR_WB:
2395  st->codecpar->channels = 1;
2396  st->codecpar->sample_rate = 16000;
2397  break;
2398  case AV_CODEC_ID_MP2:
2399  case AV_CODEC_ID_MP3:
2400  /* force type after stsd for m1a hdlr */
2402  break;
2403  case AV_CODEC_ID_GSM:
2404  case AV_CODEC_ID_ADPCM_MS:
2406  case AV_CODEC_ID_ILBC:
2407  case AV_CODEC_ID_MACE3:
2408  case AV_CODEC_ID_MACE6:
2409  case AV_CODEC_ID_QDM2:
2411  break;
2412  case AV_CODEC_ID_ALAC:
2413  if (st->codecpar->extradata_size == 36) {
2414  st->codecpar->channels = AV_RB8 (st->codecpar->extradata + 21);
2415  st->codecpar->sample_rate = AV_RB32(st->codecpar->extradata + 32);
2416  }
2417  break;
2418  case AV_CODEC_ID_AC3:
2419  case AV_CODEC_ID_EAC3:
2421  case AV_CODEC_ID_VC1:
2422  case AV_CODEC_ID_VP8:
2423  case AV_CODEC_ID_VP9:
2425  break;
2426  default:
2427  break;
2428  }
2429  return 0;
2430 }
2431 
2433  int codec_tag, int format,
2434  int64_t size)
2435 {
2436  int video_codec_id = ff_codec_get_id(ff_codec_movvideo_tags, format);
2437 
2438  if (codec_tag &&
2439  (codec_tag != format &&
2440  // AVID 1:1 samples with differing data format and codec tag exist
2441  (codec_tag != AV_RL32("AV1x") || format != AV_RL32("AVup")) &&
2442  // prores is allowed to have differing data format and codec tag
2443  codec_tag != AV_RL32("apcn") && codec_tag != AV_RL32("apch") &&
2444  // so is dv (sigh)
2445  codec_tag != AV_RL32("dvpp") && codec_tag != AV_RL32("dvcp") &&
2446  (c->fc->video_codec_id ? video_codec_id != c->fc->video_codec_id
2447  : codec_tag != MKTAG('j','p','e','g')))) {
2448  /* Multiple fourcc, we skip JPEG. This is not correct, we should
2449  * export it as a separate AVStream but this needs a few changes
2450  * in the MOV demuxer, patch welcome. */
2451 
2452  av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n");
2453  avio_skip(pb, size);
2454  return 1;
2455  }
2456 
2457  return 0;
2458 }
2459 
2461 {
2462  AVStream *st;
2463  MOVStreamContext *sc;
2464  int pseudo_stream_id;
2465 
2466  av_assert0 (c->fc->nb_streams >= 1);
2467  st = c->fc->streams[c->fc->nb_streams-1];
2468  sc = st->priv_data;
2469 
2470  for (pseudo_stream_id = 0;
2471  pseudo_stream_id < entries && !pb->eof_reached;
2472  pseudo_stream_id++) {
2473  //Parsing Sample description table
2474  enum AVCodecID id;
2475  int ret, dref_id = 1;
2476  MOVAtom a = { AV_RL32("stsd") };
2477  int64_t start_pos = avio_tell(pb);
2478  int64_t size = avio_rb32(pb); /* size */
2479  uint32_t format = avio_rl32(pb); /* data format */
2480 
2481  if (size >= 16) {
2482  avio_rb32(pb); /* reserved */
2483  avio_rb16(pb); /* reserved */
2484  dref_id = avio_rb16(pb);
2485  } else if (size <= 7) {
2486  av_log(c->fc, AV_LOG_ERROR,
2487  "invalid size %"PRId64" in stsd\n", size);
2488  return AVERROR_INVALIDDATA;
2489  }
2490 
2491  if (mov_skip_multiple_stsd(c, pb, st->codecpar->codec_tag, format,
2492  size - (avio_tell(pb) - start_pos))) {
2493  sc->stsd_count++;
2494  continue;
2495  }
2496 
2497  sc->pseudo_stream_id = st->codecpar->codec_tag ? -1 : pseudo_stream_id;
2498  sc->dref_id= dref_id;
2499  sc->format = format;
2500 
2501  id = mov_codec_id(st, format);
2502 
2503  av_log(c->fc, AV_LOG_TRACE,
2504  "size=%"PRId64" 4CC=%s codec_type=%d\n", size,
2505  av_fourcc2str(format), st->codecpar->codec_type);
2506 
2507  st->codecpar->codec_id = id;
2509  mov_parse_stsd_video(c, pb, st, sc);
2510  } else if (st->codecpar->codec_type==AVMEDIA_TYPE_AUDIO) {
2511  mov_parse_stsd_audio(c, pb, st, sc);
2512  if (st->codecpar->sample_rate < 0) {
2513  av_log(c->fc, AV_LOG_ERROR, "Invalid sample rate %d\n", st->codecpar->sample_rate);
2514  return AVERROR_INVALIDDATA;
2515  }
2516  } else if (st->codecpar->codec_type==AVMEDIA_TYPE_SUBTITLE){
2517  mov_parse_stsd_subtitle(c, pb, st, sc,
2518  size - (avio_tell(pb) - start_pos));
2519  } else {
2520  ret = mov_parse_stsd_data(c, pb, st, sc,
2521  size - (avio_tell(pb) - start_pos));
2522  if (ret < 0)
2523  return ret;
2524  }
2525  /* this will read extra atoms at the end (wave, alac, damr, avcC, hvcC, SMI ...) */
2526  a.size = size - (avio_tell(pb) - start_pos);
2527  if (a.size > 8) {
2528  if ((ret = mov_read_default(c, pb, a)) < 0)
2529  return ret;
2530  } else if (a.size > 0)
2531  avio_skip(pb, a.size);
2532 
2533  if (sc->extradata && st->codecpar->extradata) {
2534  int extra_size = st->codecpar->extradata_size;
2535 
2536  /* Move the current stream extradata to the stream context one. */
2537  sc->extradata_size[pseudo_stream_id] = extra_size;
2538  sc->extradata[pseudo_stream_id] = av_malloc(extra_size + AV_INPUT_BUFFER_PADDING_SIZE);
2539  if (!sc->extradata[pseudo_stream_id])
2540  return AVERROR(ENOMEM);
2541  memcpy(sc->extradata[pseudo_stream_id], st->codecpar->extradata, extra_size);
2542  av_freep(&st->codecpar->extradata);
2543  st->codecpar->extradata_size = 0;
2544  }
2545  sc->stsd_count++;
2546  }
2547 
2548  if (pb->eof_reached) {
2549  av_log(c->fc, AV_LOG_WARNING, "reached eof, corrupted STSD atom\n");
2550  return AVERROR_EOF;
2551  }
2552 
2553  return 0;
2554 }
2555 
2557 {
2558  AVStream *st;
2559  MOVStreamContext *sc;
2560  int ret, entries;
2561 
2562  if (c->fc->nb_streams < 1)
2563  return 0;
2564  st = c->fc->streams[c->fc->nb_streams - 1];
2565  sc = st->priv_data;
2566 
2567  sc->stsd_version = avio_r8(pb);
2568  avio_rb24(pb); /* flags */
2569  entries = avio_rb32(pb);
2570 
2571  /* Each entry contains a size (4 bytes) and format (4 bytes). */
2572  if (entries <= 0 || entries > atom.size / 8) {
2573  av_log(c->fc, AV_LOG_ERROR, "invalid STSD entries %d\n", entries);
2574  return AVERROR_INVALIDDATA;
2575  }
2576 
2577  if (sc->extradata) {
2578  av_log(c->fc, AV_LOG_ERROR,
2579  "Duplicate stsd found in this track.\n");
2580  return AVERROR_INVALIDDATA;
2581  }
2582 
2583  /* Prepare space for hosting multiple extradata. */
2584  sc->extradata = av_mallocz_array(entries, sizeof(*sc->extradata));
2585  if (!sc->extradata)
2586  return AVERROR(ENOMEM);
2587 
2588  sc->extradata_size = av_mallocz_array(entries, sizeof(*sc->extradata_size));
2589  if (!sc->extradata_size) {
2590  ret = AVERROR(ENOMEM);
2591  goto fail;
2592  }
2593 
2594  ret = ff_mov_read_stsd_entries(c, pb, entries);
2595  if (ret < 0)
2596  goto fail;
2597 
2598  /* Restore back the primary extradata. */
2599  av_freep(&st->codecpar->extradata);
2600  st->codecpar->extradata_size = sc->extradata_size[0];
2601  if (sc->extradata_size[0]) {
2603  if (!st->codecpar->extradata)
2604  return AVERROR(ENOMEM);
2605  memcpy(st->codecpar->extradata, sc->extradata[0], sc->extradata_size[0]);
2606  }
2607 
2608  return mov_finalize_stsd_codec(c, pb, st, sc);
2609 fail:
2610  if (sc->extradata) {
2611  int j;
2612  for (j = 0; j < sc->stsd_count; j++)
2613  av_freep(&sc->extradata[j]);
2614  }
2615 
2616  av_freep(&sc->extradata);
2617  av_freep(&sc->extradata_size);
2618  return ret;
2619 }
2620 
2622 {
2623  AVStream *st;
2624  MOVStreamContext *sc;
2625  unsigned int i, entries;
2626 
2627  if (c->fc->nb_streams < 1)
2628  return 0;
2629  st = c->fc->streams[c->fc->nb_streams-1];
2630  sc = st->priv_data;
2631 
2632  avio_r8(pb); /* version */
2633  avio_rb24(pb); /* flags */
2634 
2635  entries = avio_rb32(pb);
2636  if ((uint64_t)entries * 12 + 4 > atom.size)
2637  return AVERROR_INVALIDDATA;
2638 
2639  av_log(c->fc, AV_LOG_TRACE, "track[%u].stsc.entries = %u\n", c->fc->nb_streams - 1, entries);
2640 
2641  if (!entries)
2642  return 0;
2643  if (sc->stsc_data)
2644  av_log(c->fc, AV_LOG_WARNING, "Duplicated STSC atom\n");
2645  av_free(sc->stsc_data);
2646  sc->stsc_count = 0;
2647  sc->stsc_data = av_malloc_array(entries, sizeof(*sc->stsc_data));
2648  if (!sc->stsc_data)
2649  return AVERROR(ENOMEM);
2650 
2651  for (i = 0; i < entries && !pb->eof_reached; i++) {
2652  sc->stsc_data[i].first = avio_rb32(pb);
2653  sc->stsc_data[i].count = avio_rb32(pb);
2654  sc->stsc_data[i].id = avio_rb32(pb);
2655  }
2656 
2657  sc->stsc_count = i;
2658  for (i = sc->stsc_count - 1; i < UINT_MAX; i--) {
2659  int64_t first_min = i + 1;
2660  if ((i+1 < sc->stsc_count && sc->stsc_data[i].first >= sc->stsc_data[i+1].first) ||
2661  (i > 0 && sc->stsc_data[i].first <= sc->stsc_data[i-1].first) ||
2662  sc->stsc_data[i].first < first_min ||
2663  sc->stsc_data[i].count < 1 ||
2664  sc->stsc_data[i].id < 1) {
2665  av_log(c->fc, AV_LOG_WARNING, "STSC entry %d is invalid (first=%d count=%d id=%d)\n", i, sc->stsc_data[i].first, sc->stsc_data[i].count, sc->stsc_data[i].id);
2666  if (i+1 >= sc->stsc_count) {
2667  sc->stsc_data[i].first = FFMAX(sc->stsc_data[i].first, first_min);
2668  if (i > 0 && sc->stsc_data[i].first <= sc->stsc_data[i-1].first)
2669  sc->stsc_data[i].first = FFMIN(sc->stsc_data[i-1].first + 1LL, INT_MAX);
2670  sc->stsc_data[i].count = FFMAX(sc->stsc_data[i].count, 1);
2671  sc->stsc_data[i].id = FFMAX(sc->stsc_data[i].id, 1);
2672  continue;
2673  }
2674  av_assert0(sc->stsc_data[i+1].first >= 2);
2675  // We replace this entry by the next valid
2676  sc->stsc_data[i].first = sc->stsc_data[i+1].first - 1;
2677  sc->stsc_data[i].count = sc->stsc_data[i+1].count;
2678  sc->stsc_data[i].id = sc->stsc_data[i+1].id;
2679  }
2680  }
2681 
2682  if (pb->eof_reached) {
2683  av_log(c->fc, AV_LOG_WARNING, "reached eof, corrupted STSC atom\n");
2684  return AVERROR_EOF;
2685  }
2686 
2687  return 0;
2688 }
2689 
2690 static inline int mov_stsc_index_valid(unsigned int index, unsigned int count)
2691 {
2692  return index < count - 1;
2693 }
2694 
2695 /* Compute the samples value for the stsc entry at the given index. */
2696 static inline int64_t mov_get_stsc_samples(MOVStreamContext *sc, unsigned int index)
2697 {
2698  int chunk_count;
2699 
2700  if (mov_stsc_index_valid(index, sc->stsc_count))
2701  chunk_count = sc->stsc_data[index + 1].first - sc->stsc_data[index].first;
2702  else {
2703  // Validation for stsc / stco happens earlier in mov_read_stsc + mov_read_trak.
2704  av_assert0(sc->stsc_data[index].first <= sc->chunk_count);
2705  chunk_count = sc->chunk_count - (sc->stsc_data[index].first - 1);
2706  }
2707 
2708  return sc->stsc_data[index].count * (int64_t)chunk_count;
2709 }
2710 
2712 {
2713  AVStream *st;
2714  MOVStreamContext *sc;
2715  unsigned i, entries;
2716 
2717  if (c->fc->nb_streams < 1)
2718  return 0;
2719  st = c->fc->streams[c->fc->nb_streams-1];
2720  sc = st->priv_data;
2721 
2722  avio_rb32(pb); // version + flags
2723 
2724  entries = avio_rb32(pb);
2725  if (sc->stps_data)
2726  av_log(c->fc, AV_LOG_WARNING, "Duplicated STPS atom\n");
2727  av_free(sc->stps_data);
2728  sc->stps_count = 0;
2729  sc->stps_data = av_malloc_array(entries, sizeof(*sc->stps_data));
2730  if (!sc->stps_data)
2731  return AVERROR(ENOMEM);
2732 
2733  for (i = 0; i < entries && !pb->eof_reached; i++) {
2734  sc->stps_data[i] = avio_rb32(pb);
2735  }
2736 
2737  sc->stps_count = i;
2738 
2739  if (pb->eof_reached) {
2740  av_log(c->fc, AV_LOG_WARNING, "reached eof, corrupted STPS atom\n");
2741  return AVERROR_EOF;
2742  }
2743 
2744  return 0;
2745 }
2746 
2748 {
2749  AVStream *st;
2750  MOVStreamContext *sc;
2751  unsigned int i, entries;
2752 
2753  if (c->fc->nb_streams < 1)
2754  return 0;
2755  st = c->fc->streams[c->fc->nb_streams-1];
2756  sc = st->priv_data;
2757 
2758  avio_r8(pb); /* version */
2759  avio_rb24(pb); /* flags */
2760 
2761  entries = avio_rb32(pb);
2762 
2763  av_log(c->fc, AV_LOG_TRACE, "keyframe_count = %u\n", entries);
2764 
2765  if (!entries)
2766  {
2767  sc->keyframe_absent = 1;
2768  if (!st->need_parsing && st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
2770  return 0;
2771  }
2772  if (sc->keyframes)
2773  av_log(c->fc, AV_LOG_WARNING, "Duplicated STSS atom\n");
2774  if (entries >= UINT_MAX / sizeof(int))
2775  return AVERROR_INVALIDDATA;
2776  av_freep(&sc->keyframes);
2777  sc->keyframe_count = 0;
2778  sc->keyframes = av_malloc_array(entries, sizeof(*sc->keyframes));
2779  if (!sc->keyframes)
2780  return AVERROR(ENOMEM);
2781 
2782  for (i = 0; i < entries && !pb->eof_reached; i++) {
2783  sc->keyframes[i] = avio_rb32(pb);
2784  }
2785 
2786  sc->keyframe_count = i;
2787 
2788  if (pb->eof_reached) {
2789  av_log(c->fc, AV_LOG_WARNING, "reached eof, corrupted STSS atom\n");
2790  return AVERROR_EOF;
2791  }
2792 
2793  return 0;
2794 }
2795 
2797 {
2798  AVStream *st;
2799  MOVStreamContext *sc;
2800  unsigned int i, entries, sample_size, field_size, num_bytes;
2801  GetBitContext gb;
2802  unsigned char* buf;
2803  int ret;
2804 
2805  if (c->fc->nb_streams < 1)
2806  return 0;
2807  st = c->fc->streams[c->fc->nb_streams-1];
2808  sc = st->priv_data;
2809 
2810  avio_r8(pb); /* version */
2811  avio_rb24(pb); /* flags */
2812 
2813  if (atom.type == MKTAG('s','t','s','z')) {
2814  sample_size = avio_rb32(pb);
2815  if (!sc->sample_size) /* do not overwrite value computed in stsd */
2816  sc->sample_size = sample_size;
2817  sc->stsz_sample_size = sample_size;
2818  field_size = 32;
2819  } else {
2820  sample_size = 0;
2821  avio_rb24(pb); /* reserved */
2822  field_size = avio_r8(pb);
2823  }
2824  entries = avio_rb32(pb);
2825 
2826  av_log(c->fc, AV_LOG_TRACE, "sample_size = %u sample_count = %u\n", sc->sample_size, entries);
2827 
2828  sc->sample_count = entries;
2829  if (sample_size)
2830  return 0;
2831 
2832  if (field_size != 4 && field_size != 8 && field_size != 16 && field_size != 32) {
2833  av_log(c->fc, AV_LOG_ERROR, "Invalid sample field size %u\n", field_size);
2834  return AVERROR_INVALIDDATA;
2835  }
2836 
2837  if (!entries)
2838  return 0;
2839  if (entries >= (UINT_MAX - 4) / field_size)
2840  return AVERROR_INVALIDDATA;
2841  if (sc->sample_sizes)
2842  av_log(c->fc, AV_LOG_WARNING, "Duplicated STSZ atom\n");
2843  av_free(sc->sample_sizes);
2844  sc->sample_count = 0;
2845  sc->sample_sizes = av_malloc_array(entries, sizeof(*sc->sample_sizes));
2846  if (!sc->sample_sizes)
2847  return AVERROR(ENOMEM);
2848 
2849  num_bytes = (entries*field_size+4)>>3;
2850 
2851  buf = av_malloc(num_bytes+AV_INPUT_BUFFER_PADDING_SIZE);
2852  if (!buf) {
2853  av_freep(&sc->sample_sizes);
2854  return AVERROR(ENOMEM);
2855  }
2856 
2857  ret = ffio_read_size(pb, buf, num_bytes);
2858  if (ret < 0) {
2859  av_freep(&sc->sample_sizes);
2860  av_free(buf);
2861  av_log(c->fc, AV_LOG_WARNING, "STSZ atom truncated\n");
2862  return 0;
2863  }
2864 
2865  init_get_bits(&gb, buf, 8*num_bytes);
2866 
2867  for (i = 0; i < entries && !pb->eof_reached; i++) {
2868  sc->sample_sizes[i] = get_bits_long(&gb, field_size);
2869  sc->data_size += sc->sample_sizes[i];
2870  }
2871 
2872  sc->sample_count = i;
2873 
2874  av_free(buf);
2875 
2876  if (pb->eof_reached) {
2877  av_log(c->fc, AV_LOG_WARNING, "reached eof, corrupted STSZ atom\n");
2878  return AVERROR_EOF;
2879  }
2880 
2881  return 0;
2882 }
2883 
2885 {
2886  AVStream *st;
2887  MOVStreamContext *sc;
2888  unsigned int i, entries, alloc_size = 0;
2889  int64_t duration=0;
2890  int64_t total_sample_count=0;
2891 
2892  if (c->fc->nb_streams < 1)
2893  return 0;
2894  st = c->fc->streams[c->fc->nb_streams-1];
2895  sc = st->priv_data;
2896 
2897  avio_r8(pb); /* version */
2898  avio_rb24(pb); /* flags */
2899  entries = avio_rb32(pb);
2900 
2901  av_log(c->fc, AV_LOG_TRACE, "track[%u].stts.entries = %u\n",
2902  c->fc->nb_streams-1, entries);
2903 
2904  if (sc->stts_data)
2905  av_log(c->fc, AV_LOG_WARNING, "Duplicated STTS atom\n");
2906  av_freep(&sc->stts_data);
2907  sc->stts_count = 0;
2908  if (entries >= INT_MAX / sizeof(*sc->stts_data))
2909  return AVERROR(ENOMEM);
2910 
2911  for (i = 0; i < entries && !pb->eof_reached; i++) {
2912  int sample_duration;
2913  unsigned int sample_count;
2914  unsigned int min_entries = FFMIN(FFMAX(i + 1, 1024 * 1024), entries);
2915  MOVStts *stts_data = av_fast_realloc(sc->stts_data, &alloc_size,
2916  min_entries * sizeof(*sc->stts_data));
2917  if (!stts_data) {
2918  av_freep(&sc->stts_data);
2919  sc->stts_count = 0;
2920  return AVERROR(ENOMEM);
2921  }
2922  sc->stts_count = min_entries;
2923  sc->stts_data = stts_data;
2924 
2925  sample_count=avio_rb32(pb);
2926  sample_duration = avio_rb32(pb);
2927 
2928  sc->stts_data[i].count= sample_count;
2929  sc->stts_data[i].duration= sample_duration;
2930 
2931  av_log(c->fc, AV_LOG_TRACE, "sample_count=%d, sample_duration=%d\n",
2932  sample_count, sample_duration);
2933 
2934  if ( i+1 == entries
2935  && i
2936  && sample_count == 1
2937  && total_sample_count > 100
2938  && sample_duration/10 > duration / total_sample_count)
2939  sample_duration = duration / total_sample_count;
2940  duration+=(int64_t)sample_duration*(uint64_t)sample_count;
2941  total_sample_count+=sample_count;
2942  }
2943 
2944  sc->stts_count = i;
2945 
2946  if (duration > 0 &&
2947  duration <= INT64_MAX - sc->duration_for_fps &&
2948  total_sample_count <= INT64_MAX - sc->nb_frames_for_fps
2949  ) {
2950  sc->duration_for_fps += duration;
2951  sc->nb_frames_for_fps += total_sample_count;
2952  }
2953 
2954  if (pb->eof_reached) {
2955  av_log(c->fc, AV_LOG_WARNING, "reached eof, corrupted STTS atom\n");
2956  return AVERROR_EOF;
2957  }
2958 
2959  st->nb_frames= total_sample_count;
2960  if (duration)
2961  st->duration= FFMIN(st->duration, duration);
2962  sc->track_end = duration;
2963  return 0;
2964 }
2965 
2967 {
2968  if (duration < 0) {
2969  if (duration == INT_MIN) {
2970  av_log(NULL, AV_LOG_WARNING, "mov_update_dts_shift(): dts_shift set to %d\n", INT_MAX);
2971  duration++;
2972  }
2973  sc->dts_shift = FFMAX(sc->dts_shift, -duration);
2974  }
2975 }
2976 
2978 {
2979  AVStream *st;
2980  MOVStreamContext *sc;
2981  unsigned int i, entries, ctts_count = 0;
2982 
2983  if (c->fc->nb_streams < 1)
2984  return 0;
2985  st = c->fc->streams[c->fc->nb_streams-1];
2986  sc = st->priv_data;
2987 
2988  avio_r8(pb); /* version */
2989  avio_rb24(pb); /* flags */
2990  entries = avio_rb32(pb);
2991 
2992  av_log(c->fc, AV_LOG_TRACE, "track[%u].ctts.entries = %u\n", c->fc->nb_streams - 1, entries);
2993 
2994  if (!entries)
2995  return 0;
2996  if (entries >= UINT_MAX / sizeof(*sc->ctts_data))
2997  return AVERROR_INVALIDDATA;
2998  av_freep(&sc->ctts_data);
2999  sc->ctts_data = av_fast_realloc(NULL, &sc->ctts_allocated_size, entries * sizeof(*sc->ctts_data));
3000  if (!sc->ctts_data)
3001  return AVERROR(ENOMEM);
3002 
3003  for (i = 0; i < entries && !pb->eof_reached; i++) {
3004  int count =avio_rb32(pb);
3005  int duration =avio_rb32(pb);
3006 
3007  if (count <= 0) {
3008  av_log(c->fc, AV_LOG_TRACE,
3009  "ignoring CTTS entry with count=%d duration=%d\n",
3010  count, duration);
3011  continue;
3012  }
3013 
3014  add_ctts_entry(&sc->ctts_data, &ctts_count, &sc->ctts_allocated_size,
3015  count, duration);
3016 
3017  av_log(c->fc, AV_LOG_TRACE, "count=%d, duration=%d\n",
3018  count, duration);
3019 
3020  if (FFNABS(duration) < -(1<<28) && i+2<entries) {
3021  av_log(c->fc, AV_LOG_WARNING, "CTTS invalid\n");
3022  av_freep(&sc->ctts_data);
3023  sc->ctts_count = 0;
3024  return 0;
3025  }
3026 
3027  if (i+2<entries)
3028  mov_update_dts_shift(sc, duration);
3029  }
3030 
3031  sc->ctts_count = ctts_count;
3032 
3033  if (pb->eof_reached) {
3034  av_log(c->fc, AV_LOG_WARNING, "reached eof, corrupted CTTS atom\n");
3035  return AVERROR_EOF;
3036  }
3037 
3038  av_log(c->fc, AV_LOG_TRACE, "dts shift %d\n", sc->dts_shift);
3039 
3040  return 0;
3041 }
3042 
3044 {
3045  AVStream *st;
3046  MOVStreamContext *sc;
3047  unsigned int i, entries;
3048  uint8_t version;
3049  uint32_t grouping_type;
3050 
3051  if (c->fc->nb_streams < 1)
3052  return 0;
3053  st = c->fc->streams[c->fc->nb_streams-1];
3054  sc = st->priv_data;
3055 
3056  version = avio_r8(pb); /* version */
3057  avio_rb24(pb); /* flags */
3058  grouping_type = avio_rl32(pb);
3059  if (grouping_type != MKTAG( 'r','a','p',' '))
3060  return 0; /* only support 'rap ' grouping */
3061  if (version == 1)
3062  avio_rb32(pb); /* grouping_type_parameter */
3063 
3064  entries = avio_rb32(pb);
3065  if (!entries)
3066  return 0;
3067  if (sc->rap_group)
3068  av_log(c->fc, AV_LOG_WARNING, "Duplicated SBGP atom\n");
3069  av_free(sc->rap_group);
3070  sc->rap_group_count = 0;
3071  sc->rap_group = av_malloc_array(entries, sizeof(*sc->rap_group));
3072  if (!sc->rap_group)
3073  return AVERROR(ENOMEM);
3074 
3075  for (i = 0; i < entries && !pb->eof_reached; i++) {
3076  sc->rap_group[i].count = avio_rb32(pb); /* sample_count */
3077  sc->rap_group[i].index = avio_rb32(pb); /* group_description_index */
3078  }
3079 
3080  sc->rap_group_count = i;
3081 
3082  if (pb->eof_reached) {
3083  av_log(c->fc, AV_LOG_WARNING, "reached eof, corrupted SBGP atom\n");
3084  return AVERROR_EOF;
3085  }
3086 
3087  return 0;
3088 }
3089 
3090 /**
3091  * Get ith edit list entry (media time, duration).
3092  */
3094  const MOVStreamContext *msc,
3095  unsigned int edit_list_index,
3096  int64_t *edit_list_media_time,
3097  int64_t *edit_list_duration,
3098  int64_t global_timescale)
3099 {
3100  if (edit_list_index == msc->elst_count) {
3101  return 0;
3102  }
3103  *edit_list_media_time = msc->elst_data[edit_list_index].time;
3104  *edit_list_duration = msc->elst_data[edit_list_index].duration;
3105 
3106  /* duration is in global timescale units;convert to msc timescale */
3107  if (global_timescale == 0) {
3108  avpriv_request_sample(mov->fc, "Support for mvhd.timescale = 0 with editlists");
3109  return 0;
3110  }
3111  *edit_list_duration = av_rescale(*edit_list_duration, msc->time_scale,
3112  global_timescale);
3113  return 1;
3114 }
3115 
3116 /**
3117  * Find the closest previous frame to the timestamp_pts, in e_old index
3118  * entries. Searching for just any frame / just key frames can be controlled by
3119  * last argument 'flag'.
3120  * Note that if ctts_data is not NULL, we will always search for a key frame
3121  * irrespective of the value of 'flag'. If we don't find any keyframe, we will
3122  * return the first frame of the video.
3123  *
3124  * Here the timestamp_pts is considered to be a presentation timestamp and
3125  * the timestamp of index entries are considered to be decoding timestamps.
3126  *
3127  * Returns 0 if successful in finding a frame, else returns -1.
3128  * Places the found index corresponding output arg.
3129  *
3130  * If ctts_old is not NULL, then refines the searched entry by searching
3131  * backwards from the found timestamp, to find the frame with correct PTS.
3132  *
3133  * Places the found ctts_index and ctts_sample in corresponding output args.
3134  */
3136  AVIndexEntry *e_old,
3137  int nb_old,
3138  MOVStts* ctts_data,
3139  int64_t ctts_count,
3140  int64_t timestamp_pts,
3141  int flag,
3142  int64_t* index,
3143  int64_t* ctts_index,
3144  int64_t* ctts_sample)
3145 {
3146  MOVStreamContext *msc = st->priv_data;
3147  AVIndexEntry *e_keep = st->index_entries;
3148  int nb_keep = st->nb_index_entries;
3149  int64_t i = 0;
3150  int64_t index_ctts_count;
3151 
3152  av_assert0(index);
3153 
3154  // If dts_shift > 0, then all the index timestamps will have to be offset by
3155  // at least dts_shift amount to obtain PTS.
3156  // Hence we decrement the searched timestamp_pts by dts_shift to find the closest index element.
3157  if (msc->dts_shift > 0) {
3158  timestamp_pts -= msc->dts_shift;
3159  }
3160 
3161  st->index_entries = e_old;
3162  st->nb_index_entries = nb_old;
3163  *index = av_index_search_timestamp(st, timestamp_pts, flag | AVSEEK_FLAG_BACKWARD);
3164 
3165  // Keep going backwards in the index entries until the timestamp is the same.
3166  if (*index >= 0) {
3167  for (i = *index; i > 0 && e_old[i].timestamp == e_old[i - 1].timestamp;
3168  i--) {
3169  if ((flag & AVSEEK_FLAG_ANY) ||
3170  (e_old[i - 1].flags & AVINDEX_KEYFRAME)) {
3171  *index = i - 1;
3172  }
3173  }
3174  }
3175 
3176  // If we have CTTS then refine the search, by searching backwards over PTS
3177  // computed by adding corresponding CTTS durations to index timestamps.
3178  if (ctts_data && *index >= 0) {
3179  av_assert0(ctts_index);
3180  av_assert0(ctts_sample);
3181  // Find out the ctts_index for the found frame.
3182  *ctts_index = 0;
3183  *ctts_sample = 0;
3184  for (index_ctts_count = 0; index_ctts_count < *index; index_ctts_count++) {
3185  if (*ctts_index < ctts_count) {
3186  (*ctts_sample)++;
3187  if (ctts_data[*ctts_index].count == *ctts_sample) {
3188  (*ctts_index)++;
3189  *ctts_sample = 0;
3190  }
3191  }
3192  }
3193 
3194  while (*index >= 0 && (*ctts_index) >= 0 && (*ctts_index) < ctts_count) {
3195  // Find a "key frame" with PTS <= timestamp_pts (So that we can decode B-frames correctly).
3196  // No need to add dts_shift to the timestamp here becase timestamp_pts has already been
3197  // compensated by dts_shift above.
3198  if ((e_old[*index].timestamp + ctts_data[*ctts_index].duration) <= timestamp_pts &&
3199  (e_old[*index].flags & AVINDEX_KEYFRAME)) {
3200  break;
3201  }
3202 
3203  (*index)--;
3204  if (*ctts_sample == 0) {
3205  (*ctts_index)--;
3206  if (*ctts_index >= 0)
3207  *ctts_sample = ctts_data[*ctts_index].count - 1;
3208  } else {
3209  (*ctts_sample)--;
3210  }
3211  }
3212  }
3213 
3214  /* restore AVStream state*/
3215  st->index_entries = e_keep;
3216  st->nb_index_entries = nb_keep;
3217  return *index >= 0 ? 0 : -1;
3218 }
3219 
3220 /**
3221  * Add index entry with the given values, to the end of st->index_entries.
3222  * Returns the new size st->index_entries if successful, else returns -1.
3223  *
3224  * This function is similar to ff_add_index_entry in libavformat/utils.c
3225  * except that here we are always unconditionally adding an index entry to
3226  * the end, instead of searching the entries list and skipping the add if
3227  * there is an existing entry with the same timestamp.
3228  * This is needed because the mov_fix_index calls this func with the same
3229  * unincremented timestamp for successive discarded frames.
3230  */
3231 static int64_t add_index_entry(AVStream *st, int64_t pos, int64_t timestamp,
3232  int size, int distance, int flags)
3233 {
3234  AVIndexEntry *entries, *ie;
3235  int64_t index = -1;
3236  const size_t min_size_needed = (st->nb_index_entries + 1) * sizeof(AVIndexEntry);
3237 
3238  // Double the allocation each time, to lower memory fragmentation.
3239  // Another difference from ff_add_index_entry function.
3240  const size_t requested_size =
3241  min_size_needed > st->index_entries_allocated_size ?
3242  FFMAX(min_size_needed, 2 * st->index_entries_allocated_size) :
3243  min_size_needed;
3244 
3245  if((unsigned)st->nb_index_entries + 1 >= UINT_MAX / sizeof(AVIndexEntry))
3246  return -1;
3247 
3248  entries = av_fast_realloc(st->index_entries,
3250  requested_size);
3251  if(!entries)
3252  return -1;
3253 
3254  st->index_entries= entries;
3255 
3256  index= st->nb_index_entries++;
3257  ie= &entries[index];
3258 
3259  ie->pos = pos;
3260  ie->timestamp = timestamp;
3261  ie->min_distance= distance;
3262  ie->size= size;
3263  ie->flags = flags;
3264  return index;
3265 }
3266 
3267 /**
3268  * Rewrite timestamps of index entries in the range [end_index - frame_duration_buffer_size, end_index)
3269  * by subtracting end_ts successively by the amounts given in frame_duration_buffer.
3270  */
3271 static void fix_index_entry_timestamps(AVStream* st, int end_index, int64_t end_ts,
3272  int64_t* frame_duration_buffer,
3273  int frame_duration_buffer_size) {
3274  int i = 0;
3275  av_assert0(end_index >= 0 && end_index <= st->nb_index_entries);
3276  for (i = 0; i < frame_duration_buffer_size; i++) {
3277  end_ts -= frame_duration_buffer[frame_duration_buffer_size - 1 - i];
3278  st->index_entries[end_index - 1 - i].timestamp = end_ts;
3279  }
3280 }
3281 
3282 /**
3283  * Append a new ctts entry to ctts_data.
3284  * Returns the new ctts_count if successful, else returns -1.
3285  */
3286 static int64_t add_ctts_entry(MOVStts** ctts_data, unsigned int* ctts_count, unsigned int* allocated_size,
3287  int count, int duration)
3288 {
3289  MOVStts *ctts_buf_new;
3290  const size_t min_size_needed = (*ctts_count + 1) * sizeof(MOVStts);
3291  const size_t requested_size =
3292  min_size_needed > *allocated_size ?
3293  FFMAX(min_size_needed, 2 * (*allocated_size)) :
3294  min_size_needed;
3295 
3296  if((unsigned)(*ctts_count) >= UINT_MAX / sizeof(MOVStts) - 1)
3297  return -1;
3298 
3299  ctts_buf_new = av_fast_realloc(*ctts_data, allocated_size, requested_size);
3300 
3301  if(!ctts_buf_new)
3302  return -1;
3303 
3304  *ctts_data = ctts_buf_new;
3305 
3306  ctts_buf_new[*ctts_count].count = count;
3307  ctts_buf_new[*ctts_count].duration = duration;
3308 
3309  *ctts_count = (*ctts_count) + 1;
3310  return *ctts_count;
3311 }
3312 
3313 #define MAX_REORDER_DELAY 16
3315  MOVStreamContext *msc = st->priv_data;
3316  int ind;
3317  int ctts_ind = 0;
3318  int ctts_sample = 0;
3319  int64_t pts_buf[MAX_REORDER_DELAY + 1]; // Circular buffer to sort pts.
3320  int buf_start = 0;
3321  int j, r, num_swaps;
3322 
3323  for (j = 0; j < MAX_REORDER_DELAY + 1; j++)
3324  pts_buf[j] = INT64_MIN;
3325 
3326  if (st->codecpar->video_delay <= 0 && msc->ctts_data &&
3328  st->codecpar->video_delay = 0;
3329  for(ind = 0; ind < st->nb_index_entries && ctts_ind < msc->ctts_count; ++ind) {
3330  // Point j to the last elem of the buffer and insert the current pts there.
3331  j = buf_start;
3332  buf_start = (buf_start + 1);
3333  if (buf_start == MAX_REORDER_DELAY + 1)
3334  buf_start = 0;
3335 
3336  pts_buf[j] = st->index_entries[ind].timestamp + msc->ctts_data[ctts_ind].duration;
3337 
3338  // The timestamps that are already in the sorted buffer, and are greater than the
3339  // current pts, are exactly the timestamps that need to be buffered to output PTS
3340  // in correct sorted order.
3341  // Hence the video delay (which is the buffer size used to sort DTS and output PTS),
3342  // can be computed as the maximum no. of swaps any particular timestamp needs to
3343  // go through, to keep this buffer in sorted order.
3344  num_swaps = 0;
3345  while (j != buf_start) {
3346  r = j - 1;
3347  if (r < 0) r = MAX_REORDER_DELAY;
3348  if (pts_buf[j] < pts_buf[r]) {
3349  FFSWAP(int64_t, pts_buf[j], pts_buf[r]);
3350  ++num_swaps;
3351  } else {
3352  break;
3353  }
3354  j = r;
3355  }
3356  st->codecpar->video_delay = FFMAX(st->codecpar->video_delay, num_swaps);
3357 
3358  ctts_sample++;
3359  if (ctts_sample == msc->ctts_data[ctts_ind].count) {
3360  ctts_ind++;
3361  ctts_sample = 0;
3362  }
3363  }
3364  av_log(c->fc, AV_LOG_DEBUG, "Setting codecpar->delay to %d for stream st: %d\n",
3365  st->codecpar->video_delay, st->index);
3366  }
3367 }
3368 
3370 {
3371  sc->current_sample++;
3372  sc->current_index++;
3373  if (sc->index_ranges &&
3374  sc->current_index >= sc->current_index_range->end &&
3375  sc->current_index_range->end) {
3376  sc->current_index_range++;
3378  }
3379 }
3380 
3382 {
3383  sc->current_sample--;
3384  sc->current_index--;
3385  if (sc->index_ranges &&
3387  sc->current_index_range > sc->index_ranges) {
3388  sc->current_index_range--;
3389  sc->current_index = sc->current_index_range->end - 1;
3390  }
3391 }
3392 
3393 static void mov_current_sample_set(MOVStreamContext *sc, int current_sample)
3394 {
3395  int64_t range_size;
3396 
3397  sc->current_sample = current_sample;
3398  sc->current_index = current_sample;
3399  if (!sc->index_ranges) {
3400  return;
3401  }
3402 
3403  for (sc->current_index_range = sc->index_ranges;
3404  sc->current_index_range->end;
3405  sc->current_index_range++) {
3406  range_size = sc->current_index_range->end - sc->current_index_range->start;
3407  if (range_size > current_sample) {
3408  sc->current_index = sc->current_index_range->start + current_sample;
3409  break;
3410  }
3411  current_sample -= range_size;
3412  }
3413 }
3414 
3415 /**
3416  * Fix st->index_entries, so that it contains only the entries (and the entries
3417  * which are needed to decode them) that fall in the edit list time ranges.
3418  * Also fixes the timestamps of the index entries to match the timeline
3419  * specified the edit lists.
3420  */
3421 static void mov_fix_index(MOVContext *mov, AVStream *st)
3422 {
3423  MOVStreamContext *msc = st->priv_data;
3424  AVIndexEntry *e_old = st->index_entries;
3425  int nb_old = st->nb_index_entries;
3426  const AVIndexEntry *e_old_end = e_old + nb_old;
3427  const AVIndexEntry *current = NULL;
3428  MOVStts *ctts_data_old = msc->ctts_data;
3429  int64_t ctts_index_old = 0;
3430  int64_t ctts_sample_old = 0;
3431  int64_t ctts_count_old = msc->ctts_count;
3432  int64_t edit_list_media_time = 0;
3433  int64_t edit_list_duration = 0;
3434  int64_t frame_duration = 0;
3435  int64_t edit_list_dts_counter = 0;
3436  int64_t edit_list_dts_entry_end = 0;
3437  int64_t edit_list_start_ctts_sample = 0;
3438  int64_t curr_cts;
3439  int64_t curr_ctts = 0;
3440  int64_t empty_edits_sum_duration = 0;
3441  int64_t edit_list_index = 0;
3442  int64_t index;
3443  int flags;
3444  int64_t start_dts = 0;
3445  int64_t edit_list_start_encountered = 0;
3446  int64_t search_timestamp = 0;
3447  int64_t* frame_duration_buffer = NULL;
3448  int num_discarded_begin = 0;
3449  int first_non_zero_audio_edit = -1;
3450  int packet_skip_samples = 0;
3451  MOVIndexRange *current_index_range;
3452  int i;
3453  int found_keyframe_after_edit = 0;
3454 
3455  if (!msc->elst_data || msc->elst_count <= 0 || nb_old <= 0) {
3456  return;
3457  }
3458 
3459  // allocate the index ranges array
3460  msc->index_ranges = av_malloc((msc->elst_count + 1) * sizeof(msc->index_ranges[0]));
3461  if (!msc->index_ranges) {
3462  av_log(mov->fc, AV_LOG_ERROR, "Cannot allocate index ranges buffer\n");
3463  return;
3464  }
3465  msc->current_index_range = msc->index_ranges;
3466  current_index_range = msc->index_ranges - 1;
3467 
3468  // Clean AVStream from traces of old index
3469  st->index_entries = NULL;
3471  st->nb_index_entries = 0;
3472 
3473  // Clean ctts fields of MOVStreamContext
3474  msc->ctts_data = NULL;
3475  msc->ctts_count = 0;
3476  msc->ctts_index = 0;
3477  msc->ctts_sample = 0;
3478  msc->ctts_allocated_size = 0;
3479 
3480  // Reinitialize min_corrected_pts so that it can be computed again.
3481  msc->min_corrected_pts = -1;
3482 
3483  // If the dts_shift is positive (in case of negative ctts values in mov),
3484  // then negate the DTS by dts_shift
3485  if (msc->dts_shift > 0) {
3486  edit_list_dts_entry_end -= msc->dts_shift;
3487  av_log(mov->fc, AV_LOG_DEBUG, "Shifting DTS by %d because of negative CTTS.\n", msc->dts_shift);
3488  }
3489 
3490  start_dts = edit_list_dts_entry_end;
3491 
3492  while (get_edit_list_entry(mov, msc, edit_list_index, &edit_list_media_time,
3493  &edit_list_duration, mov->time_scale)) {
3494  av_log(mov->fc, AV_LOG_DEBUG, "Processing st: %d, edit list %"PRId64" - media time: %"PRId64", duration: %"PRId64"\n",
3495  st->index, edit_list_index, edit_list_media_time, edit_list_duration);
3496  edit_list_index++;
3497  edit_list_dts_counter = edit_list_dts_entry_end;
3498  edit_list_dts_entry_end += edit_list_duration;
3499  num_discarded_begin = 0;
3500  if (edit_list_media_time == -1) {
3501  empty_edits_sum_duration += edit_list_duration;
3502  continue;
3503  }
3504 
3505  // If we encounter a non-negative edit list reset the skip_samples/start_pad fields and set them
3506  // according to the edit list below.
3507  if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
3508  if (first_non_zero_audio_edit < 0) {
3509  first_non_zero_audio_edit = 1;
3510  } else {
3511  first_non_zero_audio_edit = 0;
3512  }
3513 
3514  if (first_non_zero_audio_edit > 0)
3515  st->skip_samples = msc->start_pad = 0;
3516  }
3517 
3518  // While reordering frame index according to edit list we must handle properly
3519  // the scenario when edit list entry starts from none key frame.
3520  // We find closest previous key frame and preserve it and consequent frames in index.
3521  // All frames which are outside edit list entry time boundaries will be dropped after decoding.
3522  search_timestamp = edit_list_media_time;
3523  if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
3524  // Audio decoders like AAC need need a decoder delay samples previous to the current sample,
3525  // to correctly decode this frame. Hence for audio we seek to a frame 1 sec. before the
3526  // edit_list_media_time to cover the decoder delay.
3527  search_timestamp = FFMAX(search_timestamp - msc->time_scale, e_old[0].timestamp);
3528  }
3529 
3530  if (find_prev_closest_index(st, e_old, nb_old, ctts_data_old, ctts_count_old, search_timestamp, 0,
3531  &index, &ctts_index_old, &ctts_sample_old) < 0) {
3532  av_log(mov->fc, AV_LOG_WARNING,
3533  "st: %d edit list: %"PRId64" Missing key frame while searching for timestamp: %"PRId64"\n",
3534  st->index, edit_list_index, search_timestamp);
3535  if (find_prev_closest_index(st, e_old, nb_old, ctts_data_old, ctts_count_old, search_timestamp, AVSEEK_FLAG_ANY,
3536  &index, &ctts_index_old, &ctts_sample_old) < 0) {
3537  av_log(mov->fc, AV_LOG_WARNING,
3538  "st: %d edit list %"PRId64" Cannot find an index entry before timestamp: %"PRId64".\n",
3539  st->index, edit_list_index, search_timestamp);
3540  index = 0;
3541  ctts_index_old = 0;
3542  ctts_sample_old = 0;
3543  }
3544  }
3545  current = e_old + index;
3546  edit_list_start_ctts_sample = ctts_sample_old;
3547 
3548  // Iterate over index and arrange it according to edit list
3549  edit_list_start_encountered = 0;
3550  found_keyframe_after_edit = 0;
3551  for (; current < e_old_end; current++, index++) {
3552  // check if frame outside edit list mark it for discard
3553  frame_duration = (current + 1 < e_old_end) ?
3554  ((current + 1)->timestamp - current->timestamp) : edit_list_duration;
3555 
3556  flags = current->flags;
3557 
3558  // frames (pts) before or after edit list
3559  curr_cts = current->timestamp + msc->dts_shift;
3560  curr_ctts = 0;
3561 
3562  if (ctts_data_old && ctts_index_old < ctts_count_old) {
3563  curr_ctts = ctts_data_old[ctts_index_old].duration;
3564  av_log(mov->fc, AV_LOG_DEBUG, "stts: %"PRId64" ctts: %"PRId64", ctts_index: %"PRId64", ctts_count: %"PRId64"\n",
3565  curr_cts, curr_ctts, ctts_index_old, ctts_count_old);
3566  curr_cts += curr_ctts;
3567  ctts_sample_old++;
3568  if (ctts_sample_old == ctts_data_old[ctts_index_old].count) {
3569  if (add_ctts_entry(&msc->ctts_data, &msc->ctts_count,
3570  &msc->ctts_allocated_size,
3571  ctts_data_old[ctts_index_old].count - edit_list_start_ctts_sample,
3572  ctts_data_old[ctts_index_old].duration) == -1) {
3573  av_log(mov->fc, AV_LOG_ERROR, "Cannot add CTTS entry %"PRId64" - {%"PRId64", %d}\n",
3574  ctts_index_old,
3575  ctts_data_old[ctts_index_old].count - edit_list_start_ctts_sample,
3576  ctts_data_old[ctts_index_old].duration);
3577  break;
3578  }
3579  ctts_index_old++;
3580  ctts_sample_old = 0;
3581  edit_list_start_ctts_sample = 0;
3582  }
3583  }
3584 
3585  if (curr_cts < edit_list_media_time || curr_cts >= (edit_list_duration + edit_list_media_time)) {
3587  curr_cts < edit_list_media_time && curr_cts + frame_duration > edit_list_media_time &&
3588  first_non_zero_audio_edit > 0) {
3589  packet_skip_samples = edit_list_media_time - curr_cts;
3590  st->skip_samples += packet_skip_samples;
3591 
3592  // Shift the index entry timestamp by packet_skip_samples to be correct.
3593  edit_list_dts_counter -= packet_skip_samples;
3594  if (edit_list_start_encountered == 0) {
3595  edit_list_start_encountered = 1;
3596  // Make timestamps strictly monotonically increasing for audio, by rewriting timestamps for
3597  // discarded packets.
3598  if (frame_duration_buffer) {
3599  fix_index_entry_timestamps(st, st->nb_index_entries, edit_list_dts_counter,
3600  frame_duration_buffer, num_discarded_begin);
3601  av_freep(&frame_duration_buffer);
3602  }
3603  }
3604 
3605  av_log(mov->fc, AV_LOG_DEBUG, "skip %d audio samples from curr_cts: %"PRId64"\n", packet_skip_samples, curr_cts);
3606  } else {
3607  flags |= AVINDEX_DISCARD_FRAME;
3608  av_log(mov->fc, AV_LOG_DEBUG, "drop a frame at curr_cts: %"PRId64" @ %"PRId64"\n", curr_cts, index);
3609 
3610  if (edit_list_start_encountered == 0) {
3611  num_discarded_begin++;
3612  frame_duration_buffer = av_realloc(frame_duration_buffer,
3613  num_discarded_begin * sizeof(int64_t));
3614  if (!frame_duration_buffer) {
3615  av_log(mov->fc, AV_LOG_ERROR, "Cannot reallocate frame duration buffer\n");
3616  break;
3617  }
3618  frame_duration_buffer[num_discarded_begin - 1] = frame_duration;
3619 
3620  // Increment skip_samples for the first non-zero audio edit list
3621  if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
3622  first_non_zero_audio_edit > 0 && st->codecpar->codec_id != AV_CODEC_ID_VORBIS) {
3623  st->skip_samples += frame_duration;
3624  }
3625  }
3626  }
3627  } else {
3628  if (msc->min_corrected_pts < 0) {
3629  msc->min_corrected_pts = edit_list_dts_counter + curr_ctts + msc->dts_shift;
3630  } else {
3631  msc->min_corrected_pts = FFMIN(msc->min_corrected_pts, edit_list_dts_counter + curr_ctts + msc->dts_shift);
3632  }
3633  if (edit_list_start_encountered == 0) {
3634  edit_list_start_encountered = 1;
3635  // Make timestamps strictly monotonically increasing by rewriting timestamps for
3636  // discarded packets.
3637  if (frame_duration_buffer) {
3638  fix_index_entry_timestamps(st, st->nb_index_entries, edit_list_dts_counter,
3639  frame_duration_buffer, num_discarded_begin);
3640  av_freep(&frame_duration_buffer);
3641  }
3642  }
3643  }
3644 
3645  if (add_index_entry(st, current->pos, edit_list_dts_counter, current->size,
3646  current->min_distance, flags) == -1) {
3647  av_log(mov->fc, AV_LOG_ERROR, "Cannot add index entry\n");
3648  break;
3649  }
3650 
3651  // Update the index ranges array
3652  if (current_index_range < msc->index_ranges || index != current_index_range->end) {
3653  current_index_range++;
3654  current_index_range->start = index;
3655  }
3656  current_index_range->end = index + 1;
3657 
3658  // Only start incrementing DTS in frame_duration amounts, when we encounter a frame in edit list.
3659  if (edit_list_start_encountered > 0) {
3660  edit_list_dts_counter = edit_list_dts_counter + frame_duration;
3661  }
3662 
3663  // Break when found first key frame after edit entry completion
3664  if ((curr_cts + frame_duration >= (edit_list_duration + edit_list_media_time)) &&
3665  ((flags & AVINDEX_KEYFRAME) || ((st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)))) {
3666  if (ctts_data_old) {
3667  // If we have CTTS and this is the first keyframe after edit elist,
3668  // wait for one more, because there might be trailing B-frames after this I-frame
3669  // that do belong to the edit.
3670  if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO && found_keyframe_after_edit == 0) {
3671  found_keyframe_after_edit = 1;
3672  continue;
3673  }
3674  if (ctts_sample_old != 0) {
3675  if (add_ctts_entry(&msc->ctts_data, &msc->ctts_count,
3676  &msc->ctts_allocated_size,
3677  ctts_sample_old - edit_list_start_ctts_sample,
3678  ctts_data_old[ctts_index_old].duration) == -1) {
3679  av_log(mov->fc, AV_LOG_ERROR, "Cannot add CTTS entry %"PRId64" - {%"PRId64", %d}\n",
3680  ctts_index_old, ctts_sample_old - edit_list_start_ctts_sample,
3681  ctts_data_old[ctts_index_old].duration);
3682  break;
3683  }
3684  }
3685  }
3686  break;
3687  }
3688  }
3689  }
3690  // If there are empty edits, then msc->min_corrected_pts might be positive
3691  // intentionally. So we subtract the sum duration of emtpy edits here.
3692  msc->min_corrected_pts -= empty_edits_sum_duration;
3693 
3694  // If the minimum pts turns out to be greater than zero after fixing the index, then we subtract the
3695  // dts by that amount to make the first pts zero.
3696  if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
3697  if (msc->min_corrected_pts > 0) {
3698  av_log(mov->fc, AV_LOG_DEBUG, "Offset DTS by %"PRId64" to make first pts zero.\n", msc->min_corrected_pts);
3699  for (i = 0; i < st->nb_index_entries; ++i) {
3700  st->index_entries[i].timestamp -= msc->min_corrected_pts;
3701  }
3702  }
3703  }
3704  // Start time should be equal to zero or the duration of any empty edits.
3705  st->start_time = empty_edits_sum_duration;
3706 
3707  // Update av stream length, if it ends up shorter than the track's media duration
3708  st->duration = FFMIN(st->duration, edit_list_dts_entry_end - start_dts);
3709  msc->start_pad = st->skip_samples;
3710 
3711  // Free the old index and the old CTTS structures
3712  av_free(e_old);
3713  av_free(ctts_data_old);
3714  av_freep(&frame_duration_buffer);
3715 
3716  // Null terminate the index ranges array
3717  current_index_range++;
3718  current_index_range->start = 0;
3719  current_index_range->end = 0;
3720  msc->current_index = msc->index_ranges[0].start;
3721 }
3722 
3723 static void mov_build_index(MOVContext *mov, AVStream *st)
3724 {
3725  MOVStreamContext *sc = st->priv_data;
3726  int64_t current_offset;
3727  int64_t current_dts = 0;
3728  unsigned int stts_index = 0;
3729  unsigned int stsc_index = 0;
3730  unsigned int stss_index = 0;
3731  unsigned int stps_index = 0;
3732  unsigned int i, j;
3733  uint64_t stream_size = 0;
3734  MOVStts *ctts_data_old = sc->ctts_data;
3735  unsigned int ctts_count_old = sc->ctts_count;
3736 
3737  if (sc->elst_count) {
3738  int i, edit_start_index = 0, multiple_edits = 0;
3739  int64_t empty_duration = 0; // empty duration of the first edit list entry
3740  int64_t start_time = 0; // start time of the media
3741 
3742  for (i = 0; i < sc->elst_count; i++) {
3743  const MOVElst *e = &sc->elst_data[i];
3744  if (i == 0 && e->time == -1) {
3745  /* if empty, the first entry is the start time of the stream
3746  * relative to the presentation itself */
3747  empty_duration = e->duration;
3748  edit_start_index = 1;
3749  } else if (i == edit_start_index && e->time >= 0) {
3750  start_time = e->time;
3751  } else {
3752  multiple_edits = 1;
3753  }
3754  }
3755 
3756  if (multiple_edits && !mov->advanced_editlist)
3757  av_log(mov->fc, AV_LOG_WARNING, "multiple edit list entries, "
3758  "Use -advanced_editlist to correctly decode otherwise "
3759  "a/v desync might occur\n");
3760 
3761  /* adjust first dts according to edit list */
3762  if ((empty_duration || start_time) && mov->time_scale > 0) {
3763  if (empty_duration)
3764  empty_duration = av_rescale(empty_duration, sc->time_scale, mov->time_scale);
3765  sc->time_offset = start_time - empty_duration;
3767  if (!mov->advanced_editlist)
3768  current_dts = -sc->time_offset;
3769  }
3770 
3771  if (!multiple_edits && !mov->advanced_editlist &&
3772  st->codecpar->codec_id == AV_CODEC_ID_AAC && start_time > 0)
3773  sc->start_pad = start_time;
3774  }
3775 
3776  /* only use old uncompressed audio chunk demuxing when stts specifies it */
3777  if (!(st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
3778  sc->stts_count == 1 && sc->stts_data[0].duration == 1)) {
3779  unsigned int current_sample = 0;
3780  unsigned int stts_sample = 0;
3781  unsigned int sample_size;
3782  unsigned int distance = 0;
3783  unsigned int rap_group_index = 0;
3784  unsigned int rap_group_sample = 0;
3785  int64_t last_dts = 0;
3786  int64_t dts_correction = 0;
3787  int rap_group_present = sc->rap_group_count && sc->rap_group;
3788  int key_off = (sc->keyframe_count && sc->keyframes[0] > 0) || (sc->stps_count && sc->stps_data[0] > 0);
3789 
3790  current_dts -= sc->dts_shift;
3791  last_dts = current_dts;
3792 
3793  if (!sc->sample_count || st->nb_index_entries)
3794  return;
3795  if (sc->sample_count >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries)
3796  return;
3798  st->nb_index_entries + sc->sample_count,
3799  sizeof(*st->index_entries)) < 0) {
3800  st->nb_index_entries = 0;
3801  return;
3802  }
3804 
3805  if (ctts_data_old) {
3806  // Expand ctts entries such that we have a 1-1 mapping with samples
3807  if (sc->sample_count >= UINT_MAX / sizeof(*sc->ctts_data))
3808  return;
3809  sc->ctts_count = 0;
3810  sc->ctts_allocated_size = 0;
3812  sc->sample_count * sizeof(*sc->ctts_data));
3813  if (!sc->ctts_data) {
3814  av_free(ctts_data_old);
3815  return;
3816  }
3817 
3818  memset((uint8_t*)(sc->ctts_data), 0, sc->ctts_allocated_size);
3819 
3820  for (i = 0; i < ctts_count_old &&
3821  sc->ctts_count < sc->sample_count; i++)
3822  for (j = 0; j < ctts_data_old[i].count &&
3823  sc->ctts_count < sc->sample_count; j++)
3824  add_ctts_entry(&sc->ctts_data, &sc->ctts_count,
3825  &sc->ctts_allocated_size, 1,
3826  ctts_data_old[i].duration);
3827  av_free(ctts_data_old);
3828  }
3829 
3830  for (i = 0; i < sc->chunk_count; i++) {
3831  int64_t next_offset = i+1 < sc->chunk_count ? sc->chunk_offsets[i+1] : INT64_MAX;
3832  current_offset = sc->chunk_offsets[i];
3833  while (mov_stsc_index_valid(stsc_index, sc->stsc_count) &&
3834  i + 1 == sc->stsc_data[stsc_index + 1].first)
3835  stsc_index++;
3836 
3837  if (next_offset > current_offset && sc->sample_size>0 && sc->sample_size < sc->stsz_sample_size &&
3838  sc->stsc_data[stsc_index].count * (int64_t)sc->stsz_sample_size > next_offset - current_offset) {
3839  av_log(mov->fc, AV_LOG_WARNING, "STSZ sample size %d invalid (too large), ignoring\n", sc->stsz_sample_size);
3840  sc->stsz_sample_size = sc->sample_size;
3841  }
3842  if (sc->stsz_sample_size>0 && sc->stsz_sample_size < sc->sample_size) {
3843  av_log(mov->fc, AV_LOG_WARNING, "STSZ sample size %d invalid (too small), ignoring\n", sc->stsz_sample_size);
3844  sc->stsz_sample_size = sc->sample_size;
3845  }
3846 
3847  for (j = 0; j < sc->stsc_data[stsc_index].count; j++) {
3848  int keyframe = 0;
3849  if (current_sample >= sc->sample_count) {
3850  av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
3851  return;
3852  }
3853 
3854  if (!sc->keyframe_absent && (!sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index])) {
3855  keyframe = 1;
3856  if (stss_index + 1 < sc->keyframe_count)
3857  stss_index++;
3858  } else if (sc->stps_count && current_sample+key_off == sc->stps_data[stps_index]) {
3859  keyframe = 1;
3860  if (stps_index + 1 < sc->stps_count)
3861  stps_index++;
3862  }
3863  if (rap_group_present && rap_group_index < sc->rap_group_count) {
3864  if (sc->rap_group[rap_group_index].index > 0)
3865  keyframe = 1;
3866  if (++rap_group_sample == sc->rap_group[rap_group_index].count) {
3867  rap_group_sample = 0;
3868  rap_group_index++;
3869  }
3870  }
3871  if (sc->keyframe_absent
3872  && !sc->stps_count
3873  && !rap_group_present
3874  && (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO || (i==0 && j==0)))
3875  keyframe = 1;
3876  if (keyframe)
3877  distance = 0;
3878  sample_size = sc->stsz_sample_size > 0 ? sc->stsz_sample_size : sc->sample_sizes[current_sample];
3879  if (sc->pseudo_stream_id == -1 ||
3880  sc->stsc_data[stsc_index].id - 1 == sc->pseudo_stream_id) {
3881  AVIndexEntry *e;
3882  if (sample_size > 0x3FFFFFFF) {
3883  av_log(mov->fc, AV_LOG_ERROR, "Sample size %u is too large\n", sample_size);
3884  return;
3885  }
3886  e = &st->index_entries[st->nb_index_entries++];
3887  e->pos = current_offset;
3888  e->timestamp = current_dts;
3889  e->size = sample_size;
3890  e->min_distance = distance;
3891  e->flags = keyframe ? AVINDEX_KEYFRAME : 0;
3892  av_log(mov->fc, AV_LOG_TRACE, "AVIndex stream %d, sample %u, offset %"PRIx64", dts %"PRId64", "
3893  "size %u, distance %u, keyframe %d\n", st->index, current_sample,
3894  current_offset, current_dts, sample_size, distance, keyframe);
3895  if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && st->nb_index_entries < 100)
3896  ff_rfps_add_frame(mov->fc, st, current_dts);
3897  }
3898 
3899  current_offset += sample_size;
3900  stream_size += sample_size;
3901 
3902  /* A negative sample duration is invalid based on the spec,
3903  * but some samples need it to correct the DTS. */
3904  if (sc->stts_data[stts_index].duration < 0) {
3905  av_log(mov->fc, AV_LOG_WARNING,
3906  "Invalid SampleDelta %d in STTS, at %d st:%d\n",
3907  sc->stts_data[stts_index].duration, stts_index,
3908  st->index);
3909  dts_correction += sc->stts_data[stts_index].duration - 1;
3910  sc->stts_data[stts_index].duration = 1;
3911  }
3912  current_dts += sc->stts_data[stts_index].duration;
3913  if (!dts_correction || current_dts + dts_correction > last_dts) {
3914  current_dts += dts_correction;
3915  dts_correction = 0;
3916  } else {
3917  /* Avoid creating non-monotonous DTS */
3918  dts_correction += current_dts - last_dts - 1;
3919  current_dts = last_dts + 1;
3920  }
3921  last_dts = current_dts;
3922  distance++;
3923  stts_sample++;
3924  current_sample++;
3925  if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
3926  stts_sample = 0;
3927  stts_index++;
3928  }
3929  }
3930  }
3931  if (st->duration > 0)
3932  st->codecpar->bit_rate = stream_size*8*sc->time_scale/st->duration;
3933  } else {
3934  unsigned chunk_samples, total = 0;
3935 
3936  if (!sc->chunk_count)
3937  return;
3938 
3939  // compute total chunk count
3940  for (i = 0; i < sc->stsc_count; i++) {
3941  unsigned count, chunk_count;
3942 
3943  chunk_samples = sc->stsc_data[i].count;
3944  if (i != sc->stsc_count - 1 &&
3945  sc->samples_per_frame && chunk_samples % sc->samples_per_frame) {
3946  av_log(mov->fc, AV_LOG_ERROR, "error unaligned chunk\n");
3947  return;
3948  }
3949 
3950  if (sc->samples_per_frame >= 160) { // gsm
3951  count = chunk_samples / sc->samples_per_frame;
3952  } else if (sc->samples_per_frame > 1) {
3953  unsigned samples = (1024/sc->samples_per_frame)*sc->samples_per_frame;
3954  count = (chunk_samples+samples-1) / samples;
3955  } else {
3956  count = (chunk_samples+1023) / 1024;
3957  }
3958 
3959  if (mov_stsc_index_valid(i, sc->stsc_count))
3960  chunk_count = sc->stsc_data[i+1].first - sc->stsc_data[i].first;
3961  else
3962  chunk_count = sc->chunk_count - (sc->stsc_data[i].first - 1);
3963  total += chunk_count * count;
3964  }
3965 
3966  av_log(mov->fc, AV_LOG_TRACE, "chunk count %u\n", total);
3967  if (total >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries)
3968  return;
3970  st->nb_index_entries + total,
3971  sizeof(*st->index_entries)) < 0) {
3972  st->nb_index_entries = 0;
3973  return;
3974  }
3975  st->index_entries_allocated_size = (st->nb_index_entries + total) * sizeof(*st->index_entries);
3976 
3977  // populate index
3978  for (i = 0; i < sc->chunk_count; i++) {
3979  current_offset = sc->chunk_offsets[i];
3980  if (mov_stsc_index_valid(stsc_index, sc->stsc_count) &&
3981  i + 1 == sc->stsc_data[stsc_index + 1].first)
3982  stsc_index++;
3983  chunk_samples = sc->stsc_data[stsc_index].count;
3984 
3985  while (chunk_samples > 0) {
3986  AVIndexEntry *e;
3987  unsigned size, samples;
3988 
3989  if (sc->samples_per_frame > 1 && !sc->bytes_per_frame) {
3991  "Zero bytes per frame, but %d samples per frame",
3992  sc->samples_per_frame);
3993  return;
3994  }
3995 
3996  if (sc->samples_per_frame >= 160) { // gsm
3997  samples = sc->samples_per_frame;
3998  size = sc->bytes_per_frame;
3999  } else {
4000  if (sc->samples_per_frame > 1) {
4001  samples = FFMIN((1024 / sc->samples_per_frame)*
4002  sc->samples_per_frame, chunk_samples);
4003  size = (samples / sc->samples_per_frame) * sc->bytes_per_frame;
4004  } else {
4005  samples = FFMIN(1024, chunk_samples);
4006  size = samples * sc->sample_size;
4007  }
4008  }
4009 
4010  if (st->nb_index_entries >= total) {
4011  av_log(mov->fc, AV_LOG_ERROR, "wrong chunk count %u\n", total);
4012  return;
4013  }
4014  if (size > 0x3FFFFFFF) {
4015  av_log(mov->fc, AV_LOG_ERROR, "Sample size %u is too large\n", size);
4016  return;
4017  }
4018  e = &st->index_entries[st->nb_index_entries++];
4019  e->pos = current_offset;
4020  e->timestamp = current_dts;
4021  e->size = size;
4022  e->min_distance = 0;
4023  e->flags = AVINDEX_KEYFRAME;
4024  av_log(mov->fc, AV_LOG_TRACE, "AVIndex stream %d, chunk %u, offset %"PRIx64", dts %"PRId64", "
4025  "size %u, duration %u\n", st->index, i, current_offset, current_dts,
4026  size, samples);
4027 
4028  current_offset += size;
4029  current_dts += samples;
4030  chunk_samples -= samples;
4031  }
4032  }
4033  }
4034 
4035  if (!mov->ignore_editlist && mov->advanced_editlist) {
4036  // Fix index according to edit lists.
4037  mov_fix_index(mov, st);
4038  }
4039 
4040  // Update start time of the stream.
4042  st->start_time = st->index_entries[0].timestamp + sc->dts_shift;
4043  if (sc->ctts_data) {
4044  st->start_time += sc->ctts_data[0].duration;
4045  }
4046  }
4047 
4048  mov_estimate_video_delay(mov, st);
4049 }
4050 
4051 static int test_same_origin(const char *src, const char *ref) {
4052  char src_proto[64];
4053  char ref_proto[64];
4054  char src_auth[256];
4055  char ref_auth[256];
4056  char src_host[256];
4057  char ref_host[256];
4058  int src_port=-1;
4059  int ref_port=-1;
4060 
4061  av_url_split(src_proto, sizeof(src_proto), src_auth, sizeof(src_auth), src_host, sizeof(src_host), &src_port, NULL, 0, src);
4062  av_url_split(ref_proto, sizeof(ref_proto), ref_auth, sizeof(ref_auth), ref_host, sizeof(ref_host), &ref_port, NULL, 0, ref);
4063 
4064  if (strlen(src) == 0) {
4065  return -1;
4066  } else if (strlen(src_auth) + 1 >= sizeof(src_auth) ||
4067  strlen(ref_auth) + 1 >= sizeof(ref_auth) ||
4068  strlen(src_host) + 1 >= sizeof(src_host) ||
4069  strlen(ref_host) + 1 >= sizeof(ref_host)) {
4070  return 0;
4071  } else if (strcmp(src_proto, ref_proto) ||
4072  strcmp(src_auth, ref_auth) ||
4073  strcmp(src_host, ref_host) ||
4074  src_port != ref_port) {
4075  return 0;
4076  } else
4077  return 1;
4078 }
4079 
4080 static int mov_open_dref(MOVContext *c, AVIOContext **pb, const char *src, MOVDref *ref)
4081 {
4082  /* try relative path, we do not try the absolute because it can leak information about our
4083  system to an attacker */
4084  if (ref->nlvl_to > 0 && ref->nlvl_from > 0) {
4085  char filename[1025];
4086  const char *src_path;
4087  int i, l;
4088 
4089  /* find a source dir */
4090  src_path = strrchr(src, '/');
4091  if (src_path)
4092  src_path++;
4093  else
4094  src_path = src;
4095 
4096  /* find a next level down to target */
4097  for (i = 0, l = strlen(ref->path) - 1; l >= 0; l--)
4098  if (ref->path[l] == '/') {
4099  if (i == ref->nlvl_to - 1)
4100  break;
4101  else
4102  i++;
4103  }
4104 
4105  /* compose filename if next level down to target was found */
4106  if (i == ref->nlvl_to - 1 && src_path - src < sizeof(filename)) {
4107  memcpy(filename, src, src_path - src);
4108  filename[src_path - src] = 0;
4109 
4110  for (i = 1; i < ref->nlvl_from; i++)
4111  av_strlcat(filename, "../", sizeof(filename));
4112 
4113  av_strlcat(filename, ref->path + l + 1, sizeof(filename));
4114  if (!c->use_absolute_path) {
4115  int same_origin = test_same_origin(src, filename);
4116 
4117  if (!same_origin) {
4118  av_log(c->fc, AV_LOG_ERROR,
4119  "Reference with mismatching origin, %s not tried for security reasons, "
4120  "set demuxer option use_absolute_path to allow it anyway\n",
4121  ref->path);
4122  return AVERROR(ENOENT);
4123  }
4124 
4125  if(strstr(ref->path + l + 1, "..") ||
4126  strstr(ref->path + l + 1, ":") ||
4127  (ref->nlvl_from > 1 && same_origin < 0) ||
4128  (filename[0] == '/' && src_path == src))
4129  return AVERROR(ENOENT);
4130  }
4131 
4132  if (strlen(filename) + 1 == sizeof(filename))
4133  return AVERROR(ENOENT);
4134  if (!c->fc->io_open(c->fc, pb, filename, AVIO_FLAG_READ, NULL))
4135  return 0;
4136  }
4137  } else if (c->use_absolute_path) {
4138  av_log(c->fc, AV_LOG_WARNING, "Using absolute path on user request, "
4139  "this is a possible security issue\n");
4140  if (!c->fc->io_open(c->fc, pb, ref->path, AVIO_FLAG_READ, NULL))
4141  return 0;
4142  } else {
4143  av_log(c->fc, AV_LOG_ERROR,
4144  "Absolute path %s not tried for security reasons, "
4145  "set demuxer option use_absolute_path to allow absolute paths\n",
4146  ref->path);
4147  }
4148 
4149  return AVERROR(ENOENT);
4150 }
4151 
4153 {
4154  if (sc->time_scale <= 0) {
4155  av_log(c->fc, AV_LOG_WARNING, "stream %d, timescale not set\n", sc->ffindex);
4156  sc->time_scale = c->time_scale;
4157  if (sc->time_scale <= 0)
4158  sc->time_scale = 1;
4159  }
4160 }
4161 
4163 {
4164  AVStream *st;
4165  MOVStreamContext *sc;
4166  int ret;
4167 
4168  st = avformat_new_stream(c->fc, NULL);
4169  if (!st) return AVERROR(ENOMEM);
4170  st->id = -1;
4171  sc = av_mallocz(sizeof(MOVStreamContext));
4172  if (!sc) return AVERROR(ENOMEM);
4173 
4174  st->priv_data = sc;
4176  sc->ffindex = st->index;
4177  c->trak_index = st->index;
4178 
4179  if ((ret = mov_read_default(c, pb, atom)) < 0)
4180  return ret;
4181 
4182  c->trak_index = -1;
4183 
4184  // Here stsc refers to a chunk not described in stco. This is technically invalid,
4185  // but we can overlook it (clearing stsc) whenever stts_count == 0 (indicating no samples).
4186  if (!sc->chunk_count && !sc->stts_count && sc->stsc_count) {
4187  sc->stsc_count = 0;
4188  av_freep(&sc->stsc_data);
4189  }
4190 
4191  /* sanity checks */
4192  if ((sc->chunk_count && (!sc->stts_count || !sc->stsc_count ||
4193  (!sc->sample_size && !sc->sample_count))) ||
4194  (!sc->chunk_count && sc->sample_count)) {
4195  av_log(c->fc, AV_LOG_ERROR, "stream %d, missing mandatory atoms, broken header\n",
4196  st->index);
4197  return 0;
4198  }
4199  if (sc->stsc_count && sc->stsc_data[ sc->stsc_count - 1 ].first > sc->chunk_count) {
4200  av_log(c->fc, AV_LOG_ERROR, "stream %d, contradictionary STSC and STCO\n",
4201  st->index);
4202  return AVERROR_INVALIDDATA;
4203  }
4204 
4205  fix_timescale(c, sc);
4206 
4207  avpriv_set_pts_info(st, 64, 1, sc->time_scale);
4208 
4209  mov_build_index(c, st);
4210 
4211  if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) {
4212  MOVDref *dref = &sc->drefs[sc->dref_id - 1];
4213  if (c->enable_drefs) {
4214  if (mov_open_dref(c, &sc->pb, c->fc->url, dref) < 0)
4215  av_log(c->fc, AV_LOG_ERROR,
4216  "stream %d, error opening alias: path='%s', dir='%s', "
4217  "filename='%s', volume='%s', nlvl_from=%d, nlvl_to=%d\n",
4218  st->index, dref->path, dref->dir, dref->filename,
4219  dref->volume, dref->nlvl_from, dref->nlvl_to);
4220  } else {
4221  av_log(c->fc, AV_LOG_WARNING,
4222  "Skipped opening external track: "
4223  "stream %d, alias: path='%s', dir='%s', "
4224  "filename='%s', volume='%s', nlvl_from=%d, nlvl_to=%d."
4225  "Set enable_drefs to allow this.\n",
4226  st->index, dref->path, dref->dir, dref->filename,
4227  dref->volume, dref->nlvl_from, dref->nlvl_to);
4228  }
4229  } else {
4230  sc->pb = c->fc->pb;
4231  sc->pb_is_copied = 1;
4232  }
4233 
4234  if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
4235  if (!st->sample_aspect_ratio.num && st->codecpar->width && st->codecpar->height &&
4236  sc->height && sc->width &&
4237  (st->codecpar->width != sc->width || st->codecpar->height != sc->height)) {
4238  st->sample_aspect_ratio = av_d2q(((double)st->codecpar->height * sc->width) /
4239  ((double)st->codecpar->width * sc->height), INT_MAX);
4240  }
4241 
4242 #if FF_API_R_FRAME_RATE
4243  if (sc->stts_count == 1 || (sc->stts_count == 2 && sc->stts_data[1].count == 1))
4245  sc->time_scale, sc->stts_data[0].duration, INT_MAX);
4246 #endif
4247  }
4248 
4249  // done for ai5q, ai52, ai55, ai1q, ai12 and ai15.
4250  if (!st->codecpar->extradata_size && st->codecpar->codec_id == AV_CODEC_ID_H264 &&
4251  TAG_IS_AVCI(st->codecpar->codec_tag)) {
4252  ret = ff_generate_avci_extradata(st);
4253  if (ret < 0)
4254  return ret;
4255  }
4256 
4257  switch (st->codecpar->codec_id) {
4258 #if CONFIG_H261_DECODER
4259  case AV_CODEC_ID_H261:
4260 #endif
4261 #if CONFIG_H263_DECODER
4262  case AV_CODEC_ID_H263:
4263 #endif
4264 #if CONFIG_MPEG4_DECODER
4265  case AV_CODEC_ID_MPEG4:
4266 #endif
4267  st->codecpar->width = 0; /* let decoder init width/height */
4268  st->codecpar->height= 0;
4269  break;
4270  }
4271 
4272  // If the duration of the mp3 packets is not constant, then they could need a parser
4273  if (st->codecpar->codec_id == AV_CODEC_ID_MP3
4274  && sc->stts_count > 3
4275  && sc->stts_count*10 > st->nb_frames
4276  && sc->time_scale == st->codecpar->sample_rate) {
4278  }
4279  /* Do not need those anymore. */
4280  av_freep(&sc->chunk_offsets);
4281  av_freep(&sc->sample_sizes);
4282  av_freep(&sc->keyframes);
4283  av_freep(&sc->stts_data);
4284  av_freep(&sc->stps_data);
4285  av_freep(&sc->elst_data);
4286  av_freep(&sc->rap_group);
4287 
4288  return 0;
4289 }
4290 
4292 {
4293  int ret;
4294  c->itunes_metadata = 1;
4295  ret = mov_read_default(c, pb, atom);
4296  c->itunes_metadata = 0;
4297  return ret;
4298 }
4299 
4301 {
4302  uint32_t count;
4303  uint32_t i;
4304 
4305  if (atom.size < 8)
4306  return 0;
4307 
4308  avio_skip(pb, 4);
4309  count = avio_rb32(pb);
4310  if (count > UINT_MAX / sizeof(*c->meta_keys) - 1) {
4311  av_log(c->fc, AV_LOG_ERROR,
4312  "The 'keys' atom with the invalid key count: %"PRIu32"\n", count);
4313  return AVERROR_INVALIDDATA;
4314  }
4315 
4316  c->meta_keys_count = count + 1;
4317  c->meta_keys = av_mallocz(c->meta_keys_count * sizeof(*c->meta_keys));
4318  if (!c->meta_keys)
4319  return AVERROR(ENOMEM);
4320 
4321  for (i = 1; i <= count; ++i) {
4322  uint32_t key_size = avio_rb32(pb);
4323  uint32_t type = avio_rl32(pb);
4324  if (key_size < 8) {
4325  av_log(c->fc, AV_LOG_ERROR,
4326  "The key# %"PRIu32" in meta has invalid size:"
4327  "%"PRIu32"\n", i, key_size);
4328  return AVERROR_INVALIDDATA;
4329  }
4330  key_size -= 8;
4331  if (type != MKTAG('m','d','t','a')) {
4332  avio_skip(pb, key_size);
4333  }
4334  c->meta_keys[i] = av_mallocz(key_size + 1);
4335  if (!c->meta_keys[i])
4336  return AVERROR(ENOMEM);
4337  avio_read(pb, c->meta_keys[i], key_size);
4338  }
4339 
4340  return 0;
4341 }
4342 
4344 {
4345  int64_t end = avio_tell(pb) + atom.size;
4346  uint8_t *key = NULL, *val = NULL, *mean = NULL;
4347  int i;
4348  int ret = 0;
4349  AVStream *st;
4350  MOVStreamContext *sc;
4351 
4352  if (c->fc->nb_streams < 1)
4353  return 0;
4354  st = c->fc->streams[c->fc->nb_streams-1];
4355  sc = st->priv_data;
4356 
4357  for (i = 0; i < 3; i++) {
4358  uint8_t **p;
4359  uint32_t len, tag;
4360 
4361  if (end - avio_tell(pb) <= 12)
4362  break;
4363 
4364  len = avio_rb32(pb);
4365  tag = avio_rl32(pb);
4366  avio_skip(pb, 4); // flags
4367 
4368  if (len < 12 || len - 12 > end - avio_tell(pb))
4369  break;
4370  len -= 12;
4371 
4372  if (tag == MKTAG('m', 'e', 'a', 'n'))
4373  p = &mean;
4374  else if (tag == MKTAG('n', 'a', 'm', 'e'))
4375  p = &key;
4376  else if (tag == MKTAG('d', 'a', 't', 'a') && len > 4) {
4377  avio_skip(pb, 4);
4378  len -= 4;
4379  p = &val;
4380  } else
4381  break;
4382 
4383  *p = av_malloc(len + 1);
4384  if (!*p) {
4385  ret = AVERROR(ENOMEM);
4386  break;
4387  }
4388  ret = ffio_read_size(pb, *p, len);
4389  if (ret < 0) {
4390  av_freep(p);
4391  break;
4392  }
4393  (*p)[len] = 0;
4394  }
4395 
4396  if (mean && key && val) {
4397  if (strcmp(key, "iTunSMPB") == 0) {
4398  int priming, remainder, samples;
4399  if(sscanf(val, "%*X %X %X %X", &priming, &remainder, &samples) == 3){
4400  if(priming>0 && priming<16384)
4401  sc->start_pad = priming;
4402  }
4403  }
4404  if (strcmp(key, "cdec") != 0) {
4405  av_dict_set(&c->fc->metadata, key, val,
4407  key = val = NULL;
4408  }
4409  } else {
4410  av_log(c->fc, AV_LOG_VERBOSE,
4411  "Unhandled or malformed custom metadata of size %"PRId64"\n", atom.size);
4412  }
4413 
4414  avio_seek(pb, end, SEEK_SET);
4415  av_freep(&key);
4416  av_freep(&val);
4417  av_freep(&mean);
4418  return ret;
4419 }
4420 
4422 {
4423  while (atom.size > 8) {
4424  uint32_t tag = avio_rl32(pb);
4425  atom.size -= 4;
4426  if (tag == MKTAG('h','d','l','r')) {
4427  avio_seek(pb, -8, SEEK_CUR);
4428  atom.size += 8;
4429  return mov_read_default(c, pb, atom);
4430  }
4431  }
4432  return 0;
4433 }
4434 
4435 // return 1 when matrix is identity, 0 otherwise
4436 #define IS_MATRIX_IDENT(matrix) \
4437  ( (matrix)[0][0] == (1 << 16) && \
4438  (matrix)[1][1] == (1 << 16) && \
4439  (matrix)[2][2] == (1 << 30) && \
4440  !(matrix)[0][1] && !(matrix)[0][2] && \
4441  !(matrix)[1][0] && !(matrix)[1][2] && \
4442  !(matrix)[2][0] && !(matrix)[2][1])
4443 
4445 {
4446  int i, j, e;
4447  int width;
4448  int height;
4449  int display_matrix[3][3];
4450  int res_display_matrix[3][3] = { { 0 } };
4451  AVStream *st;
4452  MOVStreamContext *sc;
4453  int version;
4454  int flags;
4455 
4456  if (c->fc->nb_streams < 1)
4457  return 0;
4458  st = c->fc->streams[c->fc->nb_streams-1];
4459  sc = st->priv_data;
4460 
4461  // Each stream (trak) should have exactly 1 tkhd. This catches bad files and
4462  // avoids corrupting AVStreams mapped to an earlier tkhd.
4463  if (st->id != -1)
4464  return AVERROR_INVALIDDATA;
4465 
4466  version = avio_r8(pb);
4467  flags = avio_rb24(pb);
4469 
4470  if (version == 1) {
4471  avio_rb64(pb);
4472  avio_rb64(pb);
4473  } else {
4474  avio_rb32(pb); /* creation time */
4475  avio_rb32(pb); /* modification time */
4476  }
4477  st->id = (int)avio_rb32(pb); /* track id (NOT 0 !)*/
4478  avio_rb32(pb); /* reserved */
4479 
4480  /* highlevel (considering edits) duration in movie timebase */
4481  (version == 1) ? avio_rb64(pb) : avio_rb32(pb);
4482  avio_rb32(pb); /* reserved */
4483  avio_rb32(pb); /* reserved */
4484 
4485  avio_rb16(pb); /* layer */
4486  avio_rb16(pb); /* alternate group */
4487  avio_rb16(pb); /* volume */
4488  avio_rb16(pb); /* reserved */
4489 
4490  //read in the display matrix (outlined in ISO 14496-12, Section 6.2.2)
4491  // they're kept in fixed point format through all calculations
4492  // save u,v,z to store the whole matrix in the AV_PKT_DATA_DISPLAYMATRIX
4493  // side data, but the scale factor is not needed to calculate aspect ratio
4494  for (i = 0; i < 3; i++) {
4495  display_matrix[i][0] = avio_rb32(pb); // 16.16 fixed point
4496  display_matrix[i][1] = avio_rb32(pb); // 16.16 fixed point
4497  display_matrix[i][2] = avio_rb32(pb); // 2.30 fixed point
4498  }
4499 
4500  width = avio_rb32(pb); // 16.16 fixed point track width
4501  height = avio_rb32(pb); // 16.16 fixed point track height
4502  sc->width = width >> 16;
4503  sc->height = height >> 16;
4504 
4505  // apply the moov display matrix (after the tkhd one)
4506  for (i = 0; i < 3; i++) {
4507  const int sh[3] = { 16, 16, 30 };
4508  for (j = 0; j < 3; j++) {
4509  for (e = 0; e < 3; e++) {
4510  res_display_matrix[i][j] +=
4511  ((int64_t) display_matrix[i][e] *
4512  c->movie_display_matrix[e][j]) >> sh[e];
4513  }
4514  }
4515  }
4516 
4517  // save the matrix when it is not the default identity
4518  if (!IS_MATRIX_IDENT(res_display_matrix)) {
4519  double rotate;
4520 
4521  av_freep(&sc->display_matrix);
4522  sc->display_matrix = av_malloc(sizeof(int32_t) * 9);
4523  if (!sc->display_matrix)
4524  return AVERROR(ENOMEM);
4525 
4526  for (i = 0; i < 3; i++)
4527  for (j = 0; j < 3; j++)
4528  sc->display_matrix[i * 3 + j] = res_display_matrix[i][j];
4529 
4532  if (!isnan(rotate)) {
4533  char rotate_buf[64];
4534  rotate = -rotate;
4535  if (rotate < 0) // for backward compatibility
4536  rotate += 360;
4537  snprintf(rotate_buf, sizeof(rotate_buf), "%g", rotate);
4538  av_dict_set(&st->metadata, "rotate", rotate_buf, 0);
4539  }
4540 #endif
4541  }
4542 
4543  // transform the display width/height according to the matrix
4544  // to keep the same scale, use [width height 1<<16]
4545  if (width && height && sc->display_matrix) {
4546  double disp_transform[2];
4547 
4548  for (i = 0; i < 2; i++)
4549  disp_transform[i] = hypot(sc->display_matrix[0 + i],
4550  sc->display_matrix[3 + i]);
4551 
4552  if (disp_transform[0] > 0 && disp_transform[1] > 0 &&
4553  disp_transform[0] < (1<<24) && disp_transform[1] < (1<<24) &&
4554  fabs((disp_transform[0] / disp_transform[1]) - 1.0) > 0.01)
4556  disp_transform[0] / disp_transform[1],
4557  INT_MAX);
4558  }
4559  return 0;
4560 }
4561 
4563 {
4564  MOVFragment *frag = &c->fragment;
4565  MOVTrackExt *trex = NULL;
4566  int flags, track_id, i;
4567 
4568  avio_r8(pb); /* version */
4569  flags = avio_rb24(pb);
4570 
4571  track_id = avio_rb32(pb);
4572  if (!track_id)
4573  return AVERROR_INVALIDDATA;
4574  frag->track_id = track_id;
4575  set_frag_stream(&c->frag_index, track_id);
4576  for (i = 0; i < c->trex_count; i++)
4577  if (c->trex_data[i].track_id == frag->track_id) {
4578  trex = &c->trex_data[i];
4579  break;
4580  }
4581  if (!trex) {
4582  av_log(c->fc, AV_LOG_ERROR, "could not find corresponding trex\n");
4583  return AVERROR_INVALIDDATA;
4584  }
4585  c->fragment.found_tfhd = 1;
4586 
4589  frag->moof_offset : frag->implicit_offset;
4590  frag->stsd_id = flags & MOV_TFHD_STSD_ID ? avio_rb32(pb) : trex->stsd_id;
4591 
4592  frag->duration = flags & MOV_TFHD_DEFAULT_DURATION ?
4593  avio_rb32(pb) : trex->duration;
4594  frag->size = flags & MOV_TFHD_DEFAULT_SIZE ?
4595  avio_rb32(pb) : trex->size;
4596  frag->flags = flags & MOV_TFHD_DEFAULT_FLAGS ?
4597  avio_rb32(pb) : trex->flags;
4598  av_log(c->fc, AV_LOG_TRACE, "frag flags 0x%x\n", frag->flags);
4599 
4600  return 0;
4601 }
4602 
4604 {
4605  unsigned i, num;
4606  void *new_tracks;
4607 
4608  num = atom.size / 4;
4609  if (!(new_tracks = av_malloc_array(num, sizeof(int))))
4610  return AVERROR(ENOMEM);
4611 
4612  av_free(c->chapter_tracks);
4613  c->chapter_tracks = new_tracks;
4614  c->nb_chapter_tracks = num;
4615 
4616  for (i = 0; i < num && !pb->eof_reached; i++)
4617  c->chapter_tracks[i] = avio_rb32(pb);
4618 
4619  return 0;
4620 }
4621 
4623 {
4624  MOVTrackExt *trex;
4625  int err;
4626 
4627  if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data))
4628  return AVERROR_INVALIDDATA;
4629  if ((err = av_reallocp_array(&c->trex_data, c->trex_count + 1,
4630  sizeof(*c->trex_data))) < 0) {
4631  c->trex_count = 0;
4632  return err;
4633  }
4634 
4635  c->fc->duration = AV_NOPTS_VALUE; // the duration from mvhd is not representing the whole file when fragments are used.
4636 
4637  trex = &c->trex_data[c->trex_count++];
4638  avio_r8(pb); /* version */
4639  avio_rb24(pb); /* flags */
4640  trex->track_id = avio_rb32(pb);
4641  trex->stsd_id = avio_rb32(pb);
4642  trex->duration = avio_rb32(pb);
4643  trex->size = avio_rb32(pb);
4644  trex->flags = avio_rb32(pb);
4645  return 0;
4646 }
4647 
4649 {
4650  MOVFragment *frag = &c->fragment;
4651  AVStream *st = NULL;
4652  MOVStreamContext *sc;
4653  int version, i;
4654  MOVFragmentStreamInfo * frag_stream_info;
4655  int64_t base_media_decode_time;
4656 
4657  for (i = 0; i < c->fc->nb_streams; i++) {
4658  if (c->fc->streams[i]->id == frag->track_id) {
4659  st = c->fc->streams[i];
4660  break;
4661  }
4662  }
4663  if (!st) {
4664  av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %u\n", frag->track_id);
4665  return AVERROR_INVALIDDATA;
4666  }
4667  sc = st->priv_data;
4668  if (sc->pseudo_stream_id + 1 != frag->stsd_id && sc->pseudo_stream_id != -1)
4669  return 0;
4670  version = avio_r8(pb);
4671  avio_rb24(pb); /* flags */
4672  if (version) {
4673  base_media_decode_time = avio_rb64(pb);
4674  } else {
4675  base_media_decode_time = avio_rb32(pb);
4676  }
4677 
4678  frag_stream_info = get_current_frag_stream_info(&c->frag_index);
4679  if (frag_stream_info)
4680  frag_stream_info->tfdt_dts = base_media_decode_time;
4681  sc->track_end = base_media_decode_time;
4682 
4683  return 0;
4684 }
4685 
4687 {
4688  MOVFragment *frag = &c->fragment;
4689  AVStream *st = NULL;
4690  MOVStreamContext *sc;
4691  MOVStts *ctts_data;
4692  uint64_t offset;
4693  int64_t dts, pts = AV_NOPTS_VALUE;
4694  int data_offset = 0;
4695  unsigned entries, first_sample_flags = frag->flags;
4696  int flags, distance, i;
4697  int64_t prev_dts = AV_NOPTS_VALUE;
4698  int next_frag_index = -1, index_entry_pos;
4699  size_t requested_size;
4700  size_t old_ctts_allocated_size;
4701  AVIndexEntry *new_entries;
4702  MOVFragmentStreamInfo * frag_stream_info;
4703 
4704  if (!frag->found_tfhd) {
4705  av_log(c->fc, AV_LOG_ERROR, "trun track id unknown, no tfhd was found\n");
4706  return AVERROR_INVALIDDATA;
4707  }
4708 
4709  for (i = 0; i < c->fc->nb_streams; i++) {
4710  if (c->fc->streams[i]->id == frag->track_id) {
4711  st = c->fc->streams[i];
4712  break;
4713  }
4714  }
4715  if (!st) {
4716  av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %u\n", frag->track_id);
4717  return AVERROR_INVALIDDATA;
4718  }
4719  sc = st->priv_data;
4720  if (sc->pseudo_stream_id+1 != frag->stsd_id && sc->pseudo_stream_id != -1)
4721  return 0;
4722 
4723  // Find the next frag_index index that has a valid index_entry for
4724  // the current track_id.
4725  //
4726  // A valid index_entry means the trun for the fragment was read
4727  // and it's samples are in index_entries at the given position.
4728  // New index entries will be inserted before the index_entry found.
4729  index_entry_pos = st->nb_index_entries;
4730  for (i = c->frag_index.current + 1; i < c->frag_index.nb_items; i++) {
4731  frag_stream_info = get_frag_stream_info(&c->frag_index, i, frag->track_id);
4732  if (frag_stream_info && frag_stream_info->index_entry >= 0) {
4733  next_frag_index = i;
4734  index_entry_pos = frag_stream_info->index_entry;
4735  break;
4736  }
4737  }
4738  av_assert0(index_entry_pos <= st->nb_index_entries);
4739 
4740  avio_r8(pb); /* version */
4741  flags = avio_rb24(pb);
4742  entries = avio_rb32(pb);
4743  av_log(c->fc, AV_LOG_TRACE, "flags 0x%x entries %u\n", flags, entries);
4744 
4745  if ((uint64_t)entries+sc->ctts_count >= UINT_MAX/sizeof(*sc->ctts_data))
4746  return AVERROR_INVALIDDATA;
4747  if (flags & MOV_TRUN_DATA_OFFSET) data_offset = avio_rb32(pb);
4748  if (flags & MOV_TRUN_FIRST_SAMPLE_FLAGS) first_sample_flags = avio_rb32(pb);
4749 
4750  frag_stream_info = get_current_frag_stream_info(&c->frag_index);
4751  if (frag_stream_info)
4752  {
4753  if (frag_stream_info->first_tfra_pts != AV_NOPTS_VALUE &&
4755  pts = frag_stream_info->first_tfra_pts;
4756  av_log(c->fc, AV_LOG_DEBUG, "found mfra time %"PRId64
4757  ", using it for pts\n", pts);
4758  } else if (frag_stream_info->sidx_pts != AV_NOPTS_VALUE) {
4759  // FIXME: sidx earliest_presentation_time is *PTS*, s.b.
4760  // pts = frag_stream_info->sidx_pts;
4761  dts = frag_stream_info->sidx_pts - sc->time_offset;
4762  av_log(c->fc, AV_LOG_DEBUG, "found sidx time %"PRId64
4763  ", using it for pts\n", pts);
4764  } else if (frag_stream_info->tfdt_dts != AV_NOPTS_VALUE) {
4765  dts = frag_stream_info->tfdt_dts - sc->time_offset;
4766  av_log(c->fc, AV_LOG_DEBUG, "found tfdt time %"PRId64
4767  ", using it for dts\n", dts);
4768  } else {
4769  dts = sc->track_end - sc->time_offset;
4770  av_log(c->fc, AV_LOG_DEBUG, "found track end time %"PRId64
4771  ", using it for dts\n", dts);
4772  }
4773  } else {
4774  dts = sc->track_end - sc->time_offset;
4775  av_log(c->fc, AV_LOG_DEBUG, "found track end time %"PRId64
4776  ", using it for dts\n", dts);
4777  }
4778  offset = frag->base_data_offset + data_offset;
4779  distance = 0;
4780  av_log(c->fc, AV_LOG_TRACE, "first sample flags 0x%x\n", first_sample_flags);
4781 
4782  // realloc space for new index entries
4783  if((uint64_t)st->nb_index_entries + entries >= UINT_MAX / sizeof(AVIndexEntry)) {
4784  entries = UINT_MAX / sizeof(AVIndexEntry) - st->nb_index_entries;
4785  av_log(c->fc, AV_LOG_ERROR, "Failed to add index entry\n");
4786  }
4787  if (entries <= 0)
4788  return -1;
4789 
4790  requested_size = (st->nb_index_entries + entries) * sizeof(AVIndexEntry);
4791  new_entries = av_fast_realloc(st->index_entries,
4793  requested_size);
4794  if(!new_entries)
4795  return AVERROR(ENOMEM);
4796  st->index_entries= new_entries;
4797 
4798  requested_size = (st->nb_index_entries + entries) * sizeof(*sc->ctts_data);
4799  old_ctts_allocated_size = sc->ctts_allocated_size;
4800  ctts_data = av_fast_realloc(sc->ctts_data, &sc->ctts_allocated_size,
4801  requested_size);
4802  if (!ctts_data)
4803  return AVERROR(ENOMEM);
4804  sc->ctts_data = ctts_data;
4805 
4806  // In case there were samples without ctts entries, ensure they get
4807  // zero valued entries. This ensures clips which mix boxes with and
4808  // without ctts entries don't pickup uninitialized data.
4809  memset((uint8_t*)(sc->ctts_data) + old_ctts_allocated_size, 0,
4810  sc->ctts_allocated_size - old_ctts_allocated_size);
4811 
4812  if (index_entry_pos < st->nb_index_entries) {
4813  // Make hole in index_entries and ctts_data for new samples
4814  memmove(st->index_entries + index_entry_pos + entries,
4815  st->index_entries + index_entry_pos,
4816  sizeof(*st->index_entries) *
4817  (st->nb_index_entries - index_entry_pos));
4818  memmove(sc->ctts_data + index_entry_pos + entries,
4819  sc->ctts_data + index_entry_pos,
4820  sizeof(*sc->ctts_data) * (sc->ctts_count - index_entry_pos));
4821  if (index_entry_pos < sc->current_sample) {
4822  sc->current_sample += entries;
4823  }
4824  }
4825 
4826  st->nb_index_entries += entries;
4827  sc->ctts_count = st->nb_index_entries;
4828 
4829  // Record the index_entry position in frag_index of this fragment
4830  if (frag_stream_info)
4831  frag_stream_info->index_entry = index_entry_pos;
4832 
4833  if (index_entry_pos > 0)
4834  prev_dts = st->index_entries[index_entry_pos-1].timestamp;
4835 
4836  for (i = 0; i < entries && !pb->eof_reached; i++) {
4837  unsigned sample_size = frag->size;
4838  int sample_flags = i ? frag->flags : first_sample_flags;
4839  unsigned sample_duration = frag->duration;
4840  unsigned ctts_duration = 0;
4841  int keyframe = 0;
4842  int index_entry_flags = 0;
4843 
4844  if (flags & MOV_TRUN_SAMPLE_DURATION) sample_duration = avio_rb32(pb);
4845  if (flags & MOV_TRUN_SAMPLE_SIZE) sample_size = avio_rb32(pb);
4846  if (flags & MOV_TRUN_SAMPLE_FLAGS) sample_flags = avio_rb32(pb);
4847  if (flags & MOV_TRUN_SAMPLE_CTS) ctts_duration = avio_rb32(pb);
4848 
4849  mov_update_dts_shift(sc, ctts_duration);
4850  if (pts != AV_NOPTS_VALUE) {
4851  dts = pts - sc->dts_shift;
4852  if (flags & MOV_TRUN_SAMPLE_CTS) {
4853  dts -= ctts_duration;
4854  } else {
4855  dts -= sc->time_offset;
4856  }
4857  av_log(c->fc, AV_LOG_DEBUG,
4858  "pts %"PRId64" calculated dts %"PRId64
4859  " sc->dts_shift %d ctts.duration %d"
4860  " sc->time_offset %"PRId64
4861  " flags & MOV_TRUN_SAMPLE_CTS %d\n",
4862  pts, dts,
4863  sc->dts_shift, ctts_duration,
4864  sc->time_offset, flags & MOV_TRUN_SAMPLE_CTS);
4865  pts = AV_NOPTS_VALUE;
4866  }
4867 
4869  keyframe = 1;
4870  else
4871  keyframe =
4872  !(sample_flags & (MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC |
4874  if (keyframe) {
4875  distance = 0;
4876  index_entry_flags |= AVINDEX_KEYFRAME;
4877  }
4878  // Fragments can overlap in time. Discard overlapping frames after
4879  // decoding.
4880  if (prev_dts >= dts)
4881  index_entry_flags |= AVINDEX_DISCARD_FRAME;
4882 
4883  st->index_entries[index_entry_pos].pos = offset;
4884  st->index_entries[index_entry_pos].timestamp = dts;
4885  st->index_entries[index_entry_pos].size= sample_size;
4886  st->index_entries[index_entry_pos].min_distance= distance;
4887  st->index_entries[index_entry_pos].flags = index_entry_flags;
4888 
4889  sc->ctts_data[index_entry_pos].count = 1;
4890  sc->ctts_data[index_entry_pos].duration = ctts_duration;
4891  index_entry_pos++;
4892 
4893  av_log(c->fc, AV_LOG_TRACE, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
4894  "size %u, distance %d, keyframe %d\n", st->index,
4895  index_entry_pos, offset, dts, sample_size, distance, keyframe);
4896  distance++;
4897  dts += sample_duration;
4898  offset += sample_size;
4899  sc->data_size += sample_size;
4900 
4901  if (sample_duration <= INT64_MAX - sc->duration_for_fps &&
4902  1 <= INT64_MAX - sc->nb_frames_for_fps
4903  ) {
4904  sc->duration_for_fps += sample_duration;
4905  sc->nb_frames_for_fps ++;
4906  }
4907  }
4908  if (i < entries) {
4909  // EOF found before reading all entries. Fix the hole this would
4910  // leave in index_entries and ctts_data
4911  int gap = entries - i;
4912  memmove(st->index_entries + index_entry_pos,
4913  st->index_entries + index_entry_pos + gap,
4914  sizeof(*st->index_entries) *
4915  (st->nb_index_entries - (index_entry_pos + gap)));
4916  memmove(sc->ctts_data + index_entry_pos,
4917  sc->ctts_data + index_entry_pos + gap,
4918  sizeof(*sc->ctts_data) *
4919  (sc->ctts_count - (index_entry_pos + gap)));
4920 
4921  st->nb_index_entries -= gap;
4922  sc->ctts_count -= gap;
4923  if (index_entry_pos < sc->current_sample) {
4924  sc->current_sample -= gap;
4925  }
4926  entries = i;
4927  }
4928 
4929  // The end of this new fragment may overlap in time with the start
4930  // of the next fragment in index_entries. Mark the samples in the next
4931  // fragment that overlap with AVINDEX_DISCARD_FRAME
4932  prev_dts = AV_NOPTS_VALUE;
4933  if (index_entry_pos > 0)
4934  prev_dts = st->index_entries[index_entry_pos-1].timestamp;
4935  for (i = index_entry_pos; i < st->nb_index_entries; i++) {
4936  if (prev_dts < st->index_entries[i].timestamp)
4937  break;
4939  }
4940 
4941  // If a hole was created to insert the new index_entries into,
4942  // the index_entry recorded for all subsequent moof must
4943  // be incremented by the number of entries inserted.
4944  fix_frag_index_entries(&c->frag_index, next_frag_index,
4945  frag->track_id, entries);
4946 
4947  if (pb->eof_reached) {
4948  av_log(c->fc, AV_LOG_WARNING, "reached eof, corrupted TRUN atom\n");
4949  return AVERROR_EOF;
4950  }
4951 
4952  frag->implicit_offset = offset;
4953 
4954  sc->track_end = dts + sc->time_offset;
4955  if (st->duration < sc->track_end)
4956  st->duration = sc->track_end;
4957 
4958  return 0;
4959 }
4960 
4962 {
4963  int64_t offset = avio_tell(pb) + atom.size, pts, timestamp;
4964  uint8_t version;
4965  unsigned i, j, track_id, item_count;
4966  AVStream *st = NULL;
4967  AVStream *ref_st = NULL;
4968  MOVStreamContext *sc, *ref_sc = NULL;
4969  AVRational timescale;
4970 
4971  version = avio_r8(pb);
4972  if (version > 1) {
4973  avpriv_request_sample(c->fc, "sidx version %u", version);
4974  return 0;
4975  }
4976 
4977  avio_rb24(pb); // flags
4978 
4979  track_id = avio_rb32(pb); // Reference ID
4980  for (i = 0; i < c->fc->nb_streams; i++) {
4981  if (c->fc->streams[i]->id == track_id) {
4982  st = c->fc->streams[i];
4983  break;
4984  }
4985  }
4986  if (!st) {
4987  av_log(c->fc, AV_LOG_WARNING, "could not find corresponding track id %d\n", track_id);
4988  return 0;
4989  }
4990 
4991  sc = st->priv_data;
4992 
4993  timescale = av_make_q(1, avio_rb32(pb));
4994 
4995  if (timescale.den <= 0) {
4996  av_log(c->fc, AV_LOG_ERROR, "Invalid sidx timescale 1/%d\n", timescale.den);
4997  return AVERROR_INVALIDDATA;
4998  }
4999 
5000  if (version == 0) {
5001  pts = avio_rb32(pb);
5002  offset += avio_rb32(pb);
5003  } else {
5004  pts = avio_rb64(pb);
5005  offset += avio_rb64(pb);
5006  }
5007 
5008  avio_rb16(pb); // reserved
5009 
5010  item_count = avio_rb16(pb);
5011 
5012  for (i = 0; i < item_count; i++) {
5013  int index;
5014  MOVFragmentStreamInfo * frag_stream_info;
5015  uint32_t size = avio_rb32(pb);
5016  uint32_t duration = avio_rb32(pb);
5017  if (size & 0x80000000) {
5018  avpriv_request_sample(c->fc, "sidx reference_type 1");
5019  return AVERROR_PATCHWELCOME;
5020  }
5021  avio_rb32(pb); // sap_flags
5022  timestamp = av_rescale_q(pts, st->time_base, timescale);
5023 
5024  index = update_frag_index(c, offset);
5025  frag_stream_info = get_frag_stream_info(&c->frag_index, index, track_id);
5026  if (frag_stream_info)
5027  frag_stream_info->sidx_pts = timestamp;
5028 
5029  offset += size;
5030  pts += duration;
5031  }
5032 
5033  st->duration = sc->track_end = pts;
5034 
5035  sc->has_sidx = 1;
5036 
5037  if (offset == avio_size(pb)) {
5038  // Find first entry in fragment index that came from an sidx.
5039  // This will pretty much always be the first entry.
5040  for (i = 0; i < c->frag_index.nb_items; i++) {
5041  MOVFragmentIndexItem * item = &c->frag_index.item[i];
5042  for (j = 0; ref_st == NULL && j < item->nb_stream_info; j++) {
5043  MOVFragmentStreamInfo * si;
5044  si = &item->stream_info[j];
5045  if (si->sidx_pts != AV_NOPTS_VALUE) {
5046  ref_st = c->fc->streams[j];
5047  ref_sc = ref_st->priv_data;
5048  break;
5049  }
5050  }
5051  }
5052  if (ref_st) for (i = 0; i < c->fc->nb_streams; i++) {
5053  st = c->fc->streams[i];
5054  sc = st->priv_data;
5055  if (!sc->has_sidx) {
5056  st->duration = sc->track_end = av_rescale(ref_st->duration, sc->time_scale, ref_sc->time_scale);
5057  }
5058  }
5059 
5060  c->frag_index.complete = 1;
5061  }
5062 
5063  return 0;
5064 }
5065 
5066 /* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
5067 /* like the files created with Adobe Premiere 5.0, for samples see */
5068 /* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
5070 {
5071  int err;
5072 
5073  if (atom.size < 8)
5074  return 0; /* continue */
5075  if (avio_rb32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
5076  avio_skip(pb, atom.size - 4);
5077  return 0;
5078  }
5079  atom.type = avio_rl32(pb);
5080  atom.size -= 8;
5081  if (atom.type != MKTAG('m','d','a','t')) {
5082  avio_skip(pb, atom.size);
5083  return 0;
5084  }
5085  err = mov_read_mdat(c, pb, atom);
5086  return err;
5087 }
5088 
5090 {
5091 #if CONFIG_ZLIB
5092  AVIOContext ctx;
5093  uint8_t *cmov_data;
5094  uint8_t *moov_data; /* uncompressed data */
5095  long cmov_len, moov_len;
5096  int ret = -1;
5097 
5098  avio_rb32(pb); /* dcom atom */
5099  if (avio_rl32(pb) != MKTAG('d','c','o','m'))
5100  return AVERROR_INVALIDDATA;
5101  if (avio_rl32(pb) != MKTAG('z','l','i','b')) {
5102  av_log(c->fc, AV_LOG_ERROR, "unknown compression for cmov atom !\n");
5103  return AVERROR_INVALIDDATA;
5104  }
5105  avio_rb32(pb); /* cmvd atom */
5106  if (avio_rl32(pb) != MKTAG('c','m','v','d'))
5107  return AVERROR_INVALIDDATA;
5108  moov_len = avio_rb32(pb); /* uncompressed size */
5109  cmov_len = atom.size - 6 * 4;
5110 
5111  cmov_data = av_malloc(cmov_len);
5112  if (!cmov_data)
5113  return AVERROR(ENOMEM);
5114  moov_data = av_malloc(moov_len);
5115  if (!moov_data) {
5116  av_free(cmov_data);
5117  return AVERROR(ENOMEM);
5118  }
5119  ret = ffio_read_size(pb, cmov_data, cmov_len);
5120  if (ret < 0)
5121  goto free_and_return;
5122 
5123  ret = AVERROR_INVALIDDATA;
5124  if (uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
5125  goto free_and_return;
5126  if (ffio_init_context(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
5127  goto free_and_return;
5129  atom.type = MKTAG('m','o','o','v');
5130  atom.size = moov_len;
5131  ret = mov_read_default(c, &ctx, atom);
5132 free_and_return:
5133  av_free(moov_data);
5134  av_free(cmov_data);
5135  return ret;
5136 #else
5137  av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
5138  return AVERROR(ENOSYS);
5139 #endif
5140 }
5141 
5142 /* edit list atom */
5144 {
5145  MOVStreamContext *sc;
5146  int i, edit_count, version;
5147  int64_t elst_entry_size;
5148 
5149  if (c->fc->nb_streams < 1 || c->ignore_editlist)
5150  return 0;
5151  sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
5152 
5153  version = avio_r8(pb); /* version */
5154  avio_rb24(pb); /* flags */
5155  edit_count = avio_rb32(pb); /* entries */
5156  atom.size -= 8;
5157 
5158  elst_entry_size = version == 1 ? 20 : 12;
5159  if (atom.size != edit_count * elst_entry_size) {
5161  av_log(c->fc, AV_LOG_ERROR, "Invalid edit list entry_count: %d for elst atom of size: %"PRId64" bytes.\n",
5162  edit_count, atom.size + 8);
5163  return AVERROR_INVALIDDATA;
5164  } else {
5165  edit_count = atom.size / elst_entry_size;
5166  if (edit_count * elst_entry_size != atom.size) {
5167  av_log(c->fc, AV_LOG_WARNING, "ELST atom of %"PRId64" bytes, bigger than %d entries.", atom.size, edit_count);
5168  }
5169  }
5170  }
5171 
5172  if (!edit_count)
5173  return 0;
5174  if (sc->elst_data)
5175  av_log(c->fc, AV_LOG_WARNING, "Duplicated ELST atom\n");
5176  av_free(sc->elst_data);
5177  sc->elst_count = 0;
5178  sc->elst_data = av_malloc_array(edit_count, sizeof(*sc->elst_data));
5179  if (!sc->elst_data)
5180  return AVERROR(ENOMEM);
5181 
5182  av_log(c->fc, AV_LOG_TRACE, "track[%u].edit_count = %i\n", c->fc->nb_streams - 1, edit_count);
5183  for (i = 0; i < edit_count && atom.size > 0 && !pb->eof_reached; i++) {
5184  MOVElst *e = &sc->elst_data[i];
5185 
5186  if (version == 1) {
5187  e->duration = avio_rb64(pb);
5188  e->time = avio_rb64(pb);
5189  atom.size -= 16;
5190  } else {
5191  e->duration = avio_rb32(pb); /* segment duration */
5192  e->time = (int32_t)avio_rb32(pb); /* media time */
5193  atom.size -= 8;
5194  }
5195  e->rate = avio_rb32(pb) / 65536.0;
5196  atom.size -= 4;
5197  av_log(c->fc, AV_LOG_TRACE, "duration=%"PRId64" time=%"PRId64" rate=%f\n",
5198  e->duration, e->time, e->rate);
5199 
5200  if (e->time < 0 && e->time != -1 &&
5202  av_log(c->fc, AV_LOG_ERROR, "Track %d, edit %d: Invalid edit list media time=%"PRId64"\n",
5203  c->fc->nb_streams-1, i, e->time);
5204  return AVERROR_INVALIDDATA;
5205  }
5206  }
5207  sc->elst_count = i;
5208 
5209  return 0;
5210 }
5211 
5213 {
5214  MOVStreamContext *sc;
5215 
5216  if (c->fc->nb_streams < 1)
5217  return AVERROR_INVALIDDATA;
5218  sc = c->fc->streams[c->fc->nb_streams - 1]->priv_data;
5219  sc->timecode_track = avio_rb32(pb);
5220  return 0;
5221 }
5222 
5224 {
5225  AVStream *st;
5226  int ret;
5227 
5228  if (c->fc->nb_streams < 1)
5229  return 0;
5230  st = c->fc->streams[c->fc->nb_streams - 1];
5231 
5232  if (atom.size < 4) {
5233  av_log(c->fc, AV_LOG_ERROR, "Empty AV1 Codec Configuration Box\n");
5234  return AVERROR_INVALIDDATA;
5235  }
5236 
5237  /* For now, propagate only the OBUs, if any. Once libavcodec is
5238  updated to handle isobmff style extradata this can be removed. */
5239  avio_skip(pb, 4);
5240 
5241  if (atom.size == 4)
5242  return 0;
5243 
5244  ret = ff_get_extradata(c->fc, st->codecpar, pb, atom.size - 4);
5245  if (ret < 0)
5246  return ret;
5247 
5248  return 0;
5249 }
5250 
5252 {
5253  AVStream *st;
5254  int version, color_range, color_primaries, color_trc, color_space;
5255 
5256  if (c->fc->nb_streams < 1)
5257  return 0;
5258  st = c->fc->streams[c->fc->nb_streams - 1];
5259 
5260  if (atom.size < 5) {
5261  av_log(c->fc, AV_LOG_ERROR, "Empty VP Codec Configuration box\n");
5262  return AVERROR_INVALIDDATA;
5263  }
5264 
5265  version = avio_r8(pb);
5266  if (version != 1) {
5267  av_log(c->fc, AV_LOG_WARNING, "Unsupported VP Codec Configuration box version %d\n", version);
5268  return 0;
5269  }
5270  avio_skip(pb, 3); /* flags */
5271 
5272  avio_skip(pb, 2); /* profile + level */
5273  color_range = avio_r8(pb); /* bitDepth, chromaSubsampling, videoFullRangeFlag */
5274  color_primaries = avio_r8(pb);
5275  color_trc = avio_r8(pb);
5276  color_space = avio_r8(pb);
5277  if (avio_rb16(pb)) /* codecIntializationDataSize */
5278  return AVERROR_INVALIDDATA;
5279 
5280  if (!av_color_primaries_name(color_primaries))
5281  color_primaries = AVCOL_PRI_UNSPECIFIED;
5282  if (!av_color_transfer_name(color_trc))
5283  color_trc = AVCOL_TRC_UNSPECIFIED;
5284  if (!av_color_space_name(color_space))
5285  color_space = AVCOL_SPC_UNSPECIFIED;
5286 
5287  st->codecpar->color_range = (color_range & 1) ? AVCOL_RANGE_JPEG : AVCOL_RANGE_MPEG;
5289  st->codecpar->color_trc = color_trc;
5290  st->codecpar->color_space = color_space;
5291 
5292  return 0;
5293 }
5294 
5296 {
5297  MOVStreamContext *sc;
5298  const int chroma_den = 50000;
5299  const int luma_den = 10000;
5300  int i, j, version;
5301 
5302  if (c->fc->nb_streams < 1)
5303  return AVERROR_INVALIDDATA;
5304 
5305  sc = c->fc->streams[c->fc->nb_streams - 1]->priv_data;
5306 
5307  if (atom.size < 5) {
5308  av_log(c->fc, AV_LOG_ERROR, "Empty Mastering Display Metadata box\n");
5309  return AVERROR_INVALIDDATA;
5310  }
5311 
5312  version = avio_r8(pb);
5313  if (version) {
5314  av_log(c->fc, AV_LOG_WARNING, "Unsupported Mastering Display Metadata box version %d\n", version);
5315  return 0;
5316  }
5317  avio_skip(pb, 3); /* flags */
5318 
5320  if (!sc->mastering)
5321  return AVERROR(ENOMEM);
5322 
5323  for (i = 0; i < 3; i++)
5324  for (j = 0; j < 2; j++)
5325  sc->mastering->display_primaries[i][j] =
5326  av_make_q(lrint(((double)avio_rb16(pb) / (1 << 16)) * chroma_den), chroma_den);
5327  for (i = 0; i < 2; i++)
5328  sc->mastering->white_point[i] =
5329  av_make_q(lrint(((double)avio_rb16(pb) / (1 << 16)) * chroma_den), chroma_den);
5330  sc->mastering->max_luminance =
5331  av_make_q(lrint(((double)avio_rb32(pb) / (1 << 8)) * luma_den), luma_den);
5332  sc->mastering->min_luminance =
5333  av_make_q(lrint(((double)avio_rb32(pb) / (1 << 14)) * luma_den), luma_den);
5334 
5335  sc->mastering->has_primaries = 1;
5336  sc->mastering->has_luminance = 1;
5337 
5338  return 0;
5339 }
5340 
5342 {
5343  MOVStreamContext *sc;
5344  const int mapping[3] = {1, 2, 0};
5345  const int chroma_den = 50000;
5346  const int luma_den = 10000;
5347  int i;
5348 
5349  if (c->fc->nb_streams < 1)
5350  return AVERROR_INVALIDDATA;
5351 
5352  sc = c->fc->streams[c->fc->nb_streams - 1]->priv_data;
5353 
5354  if (atom.size < 24) {
5355  av_log(c->fc, AV_LOG_ERROR, "Invalid Mastering Display Color Volume box\n");
5356  return AVERROR_INVALIDDATA;
5357  }
5358 
5360  if (!sc->mastering)
5361  return AVERROR(ENOMEM);
5362 
5363  for (i = 0; i < 3; i++) {
5364  const int j = mapping[i];
5365  sc->mastering->display_primaries[j][0] = av_make_q(avio_rb16(pb), chroma_den);
5366  sc->mastering->display_primaries[j][1] = av_make_q(avio_rb16(pb), chroma_den);
5367  }
5368  sc->mastering->white_point[0] = av_make_q(avio_rb16(pb), chroma_den);
5369  sc->mastering->white_point[1] = av_make_q(avio_rb16(pb), chroma_den);
5370 
5371  sc->mastering->max_luminance = av_make_q(avio_rb32(pb), luma_den);
5372  sc->mastering->min_luminance = av_make_q(avio_rb32(pb), luma_den);
5373 
5374  sc->mastering->has_luminance = 1;
5375  sc->mastering->has_primaries = 1;
5376 
5377  return 0;
5378 }
5379 
5381 {
5382  MOVStreamContext *sc;
5383  int version;
5384 
5385  if (c->fc->nb_streams < 1)
5386  return AVERROR_INVALIDDATA;
5387 
5388  sc = c->fc->streams[c->fc->nb_streams - 1]->priv_data;
5389 
5390  if (atom.size < 5) {
5391  av_log(c->fc, AV_LOG_ERROR, "Empty Content Light Level box\n");
5392  return AVERROR_INVALIDDATA;
5393  }
5394 
5395  version = avio_r8(pb);
5396  if (version) {
5397  av_log(c->fc, AV_LOG_WARNING, "Unsupported Content Light Level box version %d\n", version);
5398  return 0;
5399  }
5400  avio_skip(pb, 3); /* flags */
5401 
5403  if (!sc->coll)
5404  return AVERROR(ENOMEM);
5405 
5406  sc->coll->MaxCLL = avio_rb16(pb);
5407  sc->coll->MaxFALL = avio_rb16(pb);
5408 
5409  return 0;
5410 }
5411 
5413 {
5414  MOVStreamContext *sc;
5415 
5416  if (c->fc->nb_streams < 1)
5417  return AVERROR_INVALIDDATA;
5418 
5419  sc = c->fc->streams[c->fc->nb_streams - 1]->priv_data;
5420 
5421  if (atom.size < 4) {
5422  av_log(c->fc, AV_LOG_ERROR, "Empty Content Light Level Info box\n");
5423  return AVERROR_INVALIDDATA;
5424  }
5425 
5427  if (!sc->coll)
5428  return AVERROR(ENOMEM);
5429 
5430  sc->coll->MaxCLL = avio_rb16(pb);
5431  sc->coll->MaxFALL = avio_rb16(pb);
5432 
5433  return 0;
5434 }
5435 
5437 {
5438  AVStream *st;
5439  MOVStreamContext *sc;
5440  enum AVStereo3DType type;
5441  int mode;
5442 
5443  if (c->fc->nb_streams < 1)
5444  return 0;
5445 
5446  st = c->fc->streams[c->fc->nb_streams - 1];
5447  sc = st->priv_data;
5448 
5449  if (atom.size < 5) {
5450  av_log(c->fc, AV_LOG_ERROR, "Empty stereoscopic video box\n");
5451  return AVERROR_INVALIDDATA;
5452  }
5453  avio_skip(pb, 4); /* version + flags */
5454 
5455  mode = avio_r8(pb);
5456  switch (mode) {
5457  case 0:
5458  type = AV_STEREO3D_2D;
5459  break;
5460  case 1:
5461  type = AV_STEREO3D_TOPBOTTOM;
5462  break;
5463  case 2:
5464  type = AV_STEREO3D_SIDEBYSIDE;
5465  break;
5466  default:
5467  av_log(c->fc, AV_LOG_WARNING, "Unknown st3d mode value %d\n", mode);
5468  return 0;
5469  }
5470 
5471  sc->stereo3d = av_stereo3d_alloc();
5472  if (!sc->stereo3d)
5473  return AVERROR(ENOMEM);
5474 
5475  sc->stereo3d->type = type;
5476  return 0;
5477 }
5478 
5480 {
5481  AVStream *st;
5482  MOVStreamContext *sc;
5483  int size, version, layout;
5484  int32_t yaw, pitch, roll;
5485  uint32_t l = 0, t = 0, r = 0, b = 0;
5486  uint32_t tag, padding = 0;
5487  enum AVSphericalProjection projection;
5488 
5489  if (c->fc->nb_streams < 1)
5490  return 0;
5491 
5492  st = c->fc->streams[c->fc->nb_streams - 1];
5493  sc = st->priv_data;
5494 
5495  if (atom.size < 8) {
5496  av_log(c->fc, AV_LOG_ERROR, "Empty spherical video box\n");
5497  return AVERROR_INVALIDDATA;
5498  }
5499 
5500  size = avio_rb32(pb);
5501  if (size <= 12 || size > atom.size)
5502  return AVERROR_INVALIDDATA;
5503 
5504  tag = avio_rl32(pb);
5505  if (tag != MKTAG('s','v','h','d')) {
5506  av_log(c->fc, AV_LOG_ERROR, "Missing spherical video header\n");
5507  return 0;
5508  }
5509  version = avio_r8(pb);
5510  if (version != 0) {
5511  av_log(c->fc, AV_LOG_WARNING, "Unknown spherical version %d\n",
5512  version);
5513  return 0;
5514  }
5515  avio_skip(pb, 3); /* flags */
5516  avio_skip(pb, size - 12); /* metadata_source */
5517 
5518  size = avio_rb32(pb);
5519  if (size > atom.size)
5520  return AVERROR_INVALIDDATA;
5521 
5522  tag = avio_rl32(pb);
5523  if (tag != MKTAG('p','r','o','j')) {
5524  av_log(c->fc, AV_LOG_ERROR, "Missing projection box\n");
5525  return 0;
5526  }
5527 
5528  size = avio_rb32(pb);
5529  if (size > atom.size)
5530  return AVERROR_INVALIDDATA;
5531 
5532  tag = avio_rl32(pb);
5533  if (tag != MKTAG('p','r','h','d')) {
5534  av_log(c->fc, AV_LOG_ERROR, "Missing projection header box\n");
5535  return 0;
5536  }
5537  version = avio_r8(pb);
5538  if (version != 0) {
5539  av_log(c->fc, AV_LOG_WARNING, "Unknown spherical version %d\n",
5540  version);
5541  return 0;
5542  }
5543  avio_skip(pb, 3); /* flags */
5544 
5545  /* 16.16 fixed point */
5546  yaw = avio_rb32(pb);
5547  pitch = avio_rb32(pb);
5548  roll = avio_rb32(pb);
5549 
5550  size = avio_rb32(pb);
5551  if (size > atom.size)
5552  return AVERROR_INVALIDDATA;
5553 
5554  tag = avio_rl32(pb);
5555  version = avio_r8(pb);
5556  if (version != 0) {
5557  av_log(c->fc, AV_LOG_WARNING, "Unknown spherical version %d\n",
5558  version);
5559  return 0;
5560  }
5561  avio_skip(pb, 3); /* flags */
5562  switch (tag) {
5563  case MKTAG('c','b','m','p'):
5564  layout = avio_rb32(pb);
5565  if (layout) {
5566  av_log(c->fc, AV_LOG_WARNING,
5567  "Unsupported cubemap layout %d\n", layout);
5568  return 0;
5569  }
5570  projection = AV_SPHERICAL_CUBEMAP;
5571  padding = avio_rb32(pb);
5572  break;
5573  case MKTAG('e','q','u','i'):
5574  t = avio_rb32(pb);
5575  b = avio_rb32(pb);
5576  l = avio_rb32(pb);
5577  r = avio_rb32(pb);
5578 
5579  if (b >= UINT_MAX - t || r >= UINT_MAX - l) {
5580  av_log(c->fc, AV_LOG_ERROR,
5581  "Invalid bounding rectangle coordinates "
5582  "%"PRIu32",%"PRIu32",%"PRIu32",%"PRIu32"\n", l, t, r, b);
5583  return AVERROR_INVALIDDATA;
5584  }
5585 
5586  if (l || t || r || b)
5587  projection = AV_SPHERICAL_EQUIRECTANGULAR_TILE;
5588  else
5589  projection = AV_SPHERICAL_EQUIRECTANGULAR;
5590  break;
5591  default:
5592  av_log(c->fc, AV_LOG_ERROR, "Unknown projection type: %s\n", av_fourcc2str(tag));
5593  return 0;
5594  }
5595 
5597  if (!sc->spherical)
5598  return AVERROR(ENOMEM);
5599 
5600  sc->spherical->projection = projection;
5601 
5602  sc->spherical->yaw = yaw;
5603  sc->spherical->pitch = pitch;
5604  sc->spherical->roll = roll;
5605 
5606  sc->spherical->padding = padding;
5607 
5608  sc->spherical->bound_left = l;
5609  sc->spherical->bound_top = t;
5610  sc->spherical->bound_right = r;
5611  sc->spherical->bound_bottom = b;
5612 
5613  return 0;
5614 }
5615 
5617 {
5618  int ret = 0;
5619  uint8_t *buffer = av_malloc(len + 1);
5620  const char *val;
5621 
5622  if (!buffer)
5623  return AVERROR(ENOMEM);
5624  buffer[len] = '\0';
5625 
5626  ret = ffio_read_size(pb, buffer, len);
5627  if (ret < 0)
5628  goto out;
5629 
5630  /* Check for mandatory keys and values, try to support XML as best-effort */
5631  if (!sc->spherical &&
5632  av_stristr(buffer, "<GSpherical:StitchingSoftware>") &&
5633  (val = av_stristr(buffer, "<GSpherical:Spherical>")) &&
5634  av_stristr(val, "true") &&
5635  (val = av_stristr(buffer, "<GSpherical:Stitched>")) &&
5636  av_stristr(val, "true") &&
5637  (val = av_stristr(buffer, "<GSpherical:ProjectionType>")) &&
5638  av_stristr(val, "equirectangular")) {
5640  if (!sc->spherical)
5641  goto out;
5642 
5644 
5645  if (av_stristr(buffer, "<GSpherical:StereoMode>") && !sc->stereo3d) {
5646  enum AVStereo3DType mode;
5647 
5648  if (av_stristr(buffer, "left-right"))
5649  mode = AV_STEREO3D_SIDEBYSIDE;
5650  else if (av_stristr(buffer, "top-bottom"))
5651  mode = AV_STEREO3D_TOPBOTTOM;
5652  else
5653  mode = AV_STEREO3D_2D;
5654 
5655  sc->stereo3d = av_stereo3d_alloc();
5656  if (!sc->stereo3d)
5657  goto out;
5658 
5659  sc->stereo3d->type = mode;
5660  }
5661 
5662  /* orientation */
5663  val = av_stristr(buffer, "<GSpherical:InitialViewHeadingDegrees>");
5664  if (val)
5665  sc->spherical->yaw = strtol(val, NULL, 10) * (1 << 16);
5666  val = av_stristr(buffer, "<GSpherical:InitialViewPitchDegrees>");
5667  if (val)
5668  sc->spherical->pitch = strtol(val, NULL, 10) * (1 << 16);
5669  val = av_stristr(buffer, "<GSpherical:InitialViewRollDegrees>");
5670  if (val)
5671  sc->spherical->roll = strtol(val, NULL, 10) * (1 << 16);
5672  }
5673 
5674 out:
5675  av_free(buffer);
5676  return ret;
5677 }
5678 
5680 {
5681  AVStream *st;
5682  MOVStreamContext *sc;
5683  int64_t ret;
5684  uint8_t uuid[16];
5685  static const uint8_t uuid_isml_manifest[] = {
5686  0xa5, 0xd4, 0x0b, 0x30, 0xe8, 0x14, 0x11, 0xdd,
5687  0xba, 0x2f, 0x08, 0x00, 0x20, 0x0c, 0x9a, 0x66
5688  };
5689  static const uint8_t uuid_xmp[] = {
5690  0xbe, 0x7a, 0xcf, 0xcb, 0x97, 0xa9, 0x42, 0xe8,
5691  0x9c, 0x71, 0x99, 0x94, 0x91, 0xe3, 0xaf, 0xac
5692  };
5693  static const uint8_t uuid_spherical[] = {
5694  0xff, 0xcc, 0x82, 0x63, 0xf8, 0x55, 0x4a, 0x93,
5695  0x88, 0x14, 0x58, 0x7a, 0x02, 0x52, 0x1f, 0xdd,
5696  };
5697 
5698  if (atom.size < sizeof(uuid) || atom.size >= FFMIN(INT_MAX, SIZE_MAX))
5699  return AVERROR_INVALIDDATA;
5700 
5701  if (c->fc->nb_streams < 1)
5702  return 0;
5703  st = c->fc->streams[c->fc->nb_streams - 1];
5704  sc = st->priv_data;
5705 
5706  ret = avio_read(pb, uuid, sizeof(uuid));
5707  if (ret < 0) {
5708  return ret;
5709  } else if (ret != sizeof(uuid)) {
5710  return AVERROR_INVALIDDATA;
5711  }
5712  if (!memcmp(uuid, uuid_isml_manifest, sizeof(uuid))) {
5713  uint8_t *buffer, *ptr;
5714  char *endptr;
5715  size_t len = atom.size - sizeof(uuid);
5716 
5717  if (len < 4) {
5718  return AVERROR_INVALIDDATA;
5719  }
5720  ret = avio_skip(pb, 4); // zeroes
5721  len -= 4;
5722 
5723  buffer = av_mallocz(len + 1);
5724  if (!buffer) {
5725  return AVERROR(ENOMEM);
5726  }
5727  ret = avio_read(pb, buffer, len);
5728  if (ret < 0) {
5729  av_free(buffer);
5730  return ret;
5731  } else if (ret != len) {
5732  av_free(buffer);
5733  return AVERROR_INVALIDDATA;
5734  }
5735 
5736  ptr = buffer;
5737  while ((ptr = av_stristr(ptr, "systemBitrate=\""))) {
5738  ptr += sizeof("systemBitrate=\"") - 1;
5739  c->bitrates_count++;
5740  c->bitrates = av_realloc_f(c->bitrates, c->bitrates_count, sizeof(*c->bitrates));
5741  if (!c->bitrates) {
5742  c->bitrates_count = 0;
5743  av_free(buffer);
5744  return AVERROR(ENOMEM);
5745  }
5746  errno = 0;
5747  ret = strtol(ptr, &endptr, 10);
5748  if (ret < 0 || errno || *endptr != '"') {
5749  c->bitrates[c->bitrates_count - 1] = 0;
5750  } else {
5751  c->bitrates[c->bitrates_count - 1] = ret;
5752  }
5753  }
5754 
5755  av_free(buffer);
5756  } else if (!memcmp(uuid, uuid_xmp, sizeof(uuid))) {
5757  uint8_t *buffer;
5758  size_t len = atom.size - sizeof(uuid);
5759  if (c->export_xmp) {
5760  buffer = av_mallocz(len + 1);
5761  if (!buffer) {
5762  return AVERROR(ENOMEM);
5763  }
5764  ret = avio_read(pb, buffer, len);
5765  if (ret < 0) {
5766  av_free(buffer);
5767  return ret;
5768  } else if (ret != len) {
5769  av_free(buffer);
5770  return AVERROR_INVALIDDATA;
5771  }
5772  buffer[len] = '\0';
5773  av_dict_set(&c->fc->metadata, "xmp", buffer, 0);
5774  av_free(buffer);
5775  } else {
5776  // skip all uuid atom, which makes it fast for long uuid-xmp file
5777  ret = avio_skip(pb, len);
5778  if (ret < 0)
5779  return ret;
5780  }
5781  } else if (!memcmp(uuid, uuid_spherical, sizeof(uuid))) {
5782  size_t len = atom.size - sizeof(uuid);
5783  ret = mov_parse_uuid_spherical(sc, pb, len);
5784  if (ret < 0)
5785  return ret;
5786  if (!sc->spherical)
5787  av_log(c->fc, AV_LOG_WARNING, "Invalid spherical metadata found\n");
5788  }
5789 
5790  return 0;
5791 }
5792 
5794 {
5795  int ret;
5796  uint8_t content[16];
5797 
5798  if (atom.size < 8)
5799  return 0;
5800 
5801  ret = avio_read(pb, content, FFMIN(sizeof(content), atom.size));
5802  if (ret < 0)
5803  return ret;
5804 
5805  if ( !c->found_moov
5806  && !c->found_mdat
5807  && !memcmp(content, "Anevia\x1A\x1A", 8)
5810  }
5811 
5812  return 0;
5813 }
5814 
5816 {
5817  uint32_t format = avio_rl32(pb);
5818  MOVStreamContext *sc;
5819  enum AVCodecID id;
5820  AVStream *st;
5821 
5822  if (c->fc->nb_streams < 1)
5823  return 0;
5824  st = c->fc->streams[c->fc->nb_streams - 1];
5825  sc = st->priv_data;
5826 
5827  switch (sc->format)
5828  {
5829  case MKTAG('e','n','c','v'): // encrypted video
5830  case MKTAG('e','n','c','a'): // encrypted audio
5831  id = mov_codec_id(st, format);
5832  if (st->codecpar->codec_id != AV_CODEC_ID_NONE &&
5833  st->codecpar->codec_id != id) {
5834  av_log(c->fc, AV_LOG_WARNING,
5835  "ignoring 'frma' atom of '%.4s', stream has codec id %d\n",
5836  (char*)&format, st->codecpar->codec_id);
5837  break;
5838  }
5839 
5840  st->codecpar->codec_id = id;
5841  sc->format = format;
5842  break;
5843 
5844  default:
5845  if (format != sc->format) {
5846  av_log(c->fc, AV_LOG_WARNING,
5847  "ignoring 'frma' atom of '%.4s', stream format is '%.4s'\n",
5848  (char*)&format, (char*)&sc->format);
5849  }
5850  break;
5851  }
5852 
5853  return 0;
5854 }
5855 
5856 /**
5857  * Gets the current encryption info and associated current stream context. If
5858  * we are parsing a track fragment, this will return the specific encryption
5859  * info for this fragment; otherwise this will return the global encryption
5860  * info for the current stream.
5861  */
5863 {
5864  MOVFragmentStreamInfo *frag_stream_info;
5865  AVStream *st;
5866  int i;
5867 
5868  frag_stream_info = get_current_frag_stream_info(&c->frag_index);
5869  if (frag_stream_info) {
5870  for (i = 0; i < c->fc->nb_streams; i++) {
5871  if (c->fc->streams[i]->id == frag_stream_info->id) {
5872  st = c->fc->streams[i];
5873  break;
5874  }
5875  }
5876  if (i == c->fc->nb_streams)
5877  return 0;
5878  *sc = st->priv_data;
5879 
5880  if (!frag_stream_info->encryption_index) {
5881  // If this stream isn't encrypted, don't create the index.
5882  if (!(*sc)->cenc.default_encrypted_sample)
5883  return 0;
5884  frag_stream_info->encryption_index = av_mallocz(sizeof(*frag_stream_info->encryption_index));
5885  if (!frag_stream_info->encryption_index)
5886  return AVERROR(ENOMEM);
5887  }
5888  *encryption_index = frag_stream_info->encryption_index;
5889  return 1;
5890  } else {
5891  // No current track fragment, using stream level encryption info.
5892 
5893  if (c->fc->nb_streams < 1)
5894  return 0;
5895  st = c->fc->streams[c->fc->nb_streams - 1];
5896  *sc = st->priv_data;
5897 
5898  if (!(*sc)->cenc.encryption_index) {
5899  // If this stream isn't encrypted, don't create the index.
5900  if (!(*sc)->cenc.default_encrypted_sample)
5901  return 0;
5902  (*sc)->cenc.encryption_index = av_mallocz(sizeof(*frag_stream_info->encryption_index));
5903  if (!(*sc)->cenc.encryption_index)
5904  return AVERROR(ENOMEM);
5905  }
5906 
5907  *encryption_index = (*sc)->cenc.encryption_index;
5908  return 1;
5909  }
5910 }
5911 
5913 {
5914  int i;
5915  unsigned int subsample_count;
5916  AVSubsampleEncryptionInfo *subsamples;
5917 
5918  if (!sc->cenc.default_encrypted_sample) {
5919  av_log(c->fc, AV_LOG_ERROR, "Missing schm or tenc\n");
5920  return AVERROR_INVALIDDATA;
5921  }
5922 
5924  if (!*sample)
5925  return AVERROR(ENOMEM);
5926 
5927  if (sc->cenc.per_sample_iv_size != 0) {
5928  if (avio_read(pb, (*sample)->iv, sc->cenc.per_sample_iv_size) != sc->cenc.per_sample_iv_size) {
5929  av_log(c->fc, AV_LOG_ERROR, "failed to read the initialization vector\n");
5930  av_encryption_info_free(*sample);
5931  *sample = NULL;
5932  return AVERROR_INVALIDDATA;
5933  }
5934  }
5935 
5936  if (use_subsamples) {
5937  subsample_count = avio_rb16(pb);
5938  av_free((*sample)->subsamples);
5939  (*sample)->subsamples = av_mallocz_array(subsample_count, sizeof(*subsamples));
5940  if (!(*sample)->subsamples) {
5941  av_encryption_info_free(*sample);
5942  *sample = NULL;
5943  return AVERROR(ENOMEM);
5944  }
5945 
5946  for (i = 0; i < subsample_count && !pb->eof_reached; i++) {
5947  (*sample)->subsamples[i].bytes_of_clear_data = avio_rb16(pb);
5948  (*sample)->subsamples[i].bytes_of_protected_data = avio_rb32(pb);
5949  }
5950 
5951  if (pb->eof_reached) {
5952  av_log(c->fc, AV_LOG_ERROR, "hit EOF while reading sub-sample encryption info\n");
5953  av_encryption_info_free(*sample);
5954  *sample = NULL;
5955  return AVERROR_INVALIDDATA;
5956  }
5957  (*sample)->subsample_count = subsample_count;
5958  }
5959 
5960  return 0;
5961 }
5962 
5964 {
5965  AVEncryptionInfo **encrypted_samples;
5966  MOVEncryptionIndex *encryption_index;
5967  MOVStreamContext *sc;
5968  int use_subsamples, ret;
5969  unsigned int sample_count, i, alloc_size = 0;
5970 
5971  ret = get_current_encryption_info(c, &encryption_index, &sc);
5972  if (ret != 1)
5973  return ret;
5974 
5975  if (encryption_index->nb_encrypted_samples) {
5976  // This can happen if we have both saio/saiz and senc atoms.
5977  av_log(c->fc, AV_LOG_DEBUG, "Ignoring duplicate encryption info in senc\n");
5978  return 0;
5979  }
5980 
5981  avio_r8(pb); /* version */
5982  use_subsamples = avio_rb24(pb) & 0x02; /* flags */
5983 
5984  sample_count = avio_rb32(pb);
5985  if (sample_count >= INT_MAX / sizeof(*encrypted_samples))
5986  return AVERROR(ENOMEM);
5987 
5988  for (i = 0; i < sample_count; i++) {
5989  unsigned int min_samples = FFMIN(FFMAX(i + 1, 1024 * 1024), sample_count);
5990  encrypted_samples = av_fast_realloc(encryption_index->encrypted_samples, &alloc_size,
5991  min_samples * sizeof(*encrypted_samples));
5992  if (encrypted_samples) {
5993  encryption_index->encrypted_samples = encrypted_samples;
5994 
5996  c, pb, sc, &encryption_index->encrypted_samples[i], use_subsamples);
5997  } else {
5998  ret = AVERROR(ENOMEM);
5999  }
6000  if (pb->eof_reached) {
6001  av_log(c->fc, AV_LOG_ERROR, "Hit EOF while reading senc\n");
6002  ret = AVERROR_INVALIDDATA;
6003  }
6004 
6005  if (ret < 0) {
6006  for (; i > 0; i--)
6007  av_encryption_info_free(encryption_index->encrypted_samples[i - 1]);
6008  av_freep(&encryption_index->encrypted_samples);
6009  return ret;
6010  }
6011  }
6012  encryption_index->nb_encrypted_samples = sample_count;
6013 
6014  return 0;
6015 }
6016 
6018 {
6019  AVEncryptionInfo **sample, **encrypted_samples;
6020  int64_t prev_pos;
6021  size_t sample_count, sample_info_size, i;
6022  int ret = 0;
6023  unsigned int alloc_size = 0;
6024 
6025  if (encryption_index->nb_encrypted_samples)
6026  return 0;
6027  sample_count = encryption_index->auxiliary_info_sample_count;
6028  if (encryption_index->auxiliary_offsets_count != 1) {
6029  av_log(c->fc, AV_LOG_ERROR, "Multiple auxiliary info chunks are not supported\n");
6030  return AVERROR_PATCHWELCOME;
6031  }
6032  if (sample_count >= INT_MAX / sizeof(*encrypted_samples))
6033  return AVERROR(ENOMEM);
6034 
6035  prev_pos = avio_tell(pb);
6036  if (!(pb->seekable & AVIO_SEEKABLE_NORMAL) ||
6037  avio_seek(pb, encryption_index->auxiliary_offsets[0], SEEK_SET) != encryption_index->auxiliary_offsets[0]) {
6038  av_log(c->fc, AV_LOG_INFO, "Failed to seek for auxiliary info, will only parse senc atoms for encryption info\n");
6039  goto finish;
6040  }
6041 
6042  for (i = 0; i < sample_count && !pb->eof_reached; i++) {
6043  unsigned int min_samples = FFMIN(FFMAX(i + 1, 1024 * 1024), sample_count);
6044  encrypted_samples = av_fast_realloc(encryption_index->encrypted_samples, &alloc_size,
6045  min_samples * sizeof(*encrypted_samples));
6046  if (!encrypted_samples) {
6047  ret = AVERROR(ENOMEM);
6048  goto finish;
6049  }
6050  encryption_index->encrypted_samples = encrypted_samples;
6051 
6052  sample = &encryption_index->encrypted_samples[i];
6053  sample_info_size = encryption_index->auxiliary_info_default_size
6054  ? encryption_index->auxiliary_info_default_size
6055  : encryption_index->auxiliary_info_sizes[i];
6056 
6057  ret = mov_read_sample_encryption_info(c, pb, sc, sample, sample_info_size > sc->cenc.per_sample_iv_size);
6058  if (ret < 0)
6059  goto finish;
6060  }
6061  if (pb->eof_reached) {
6062  av_log(c->fc, AV_LOG_ERROR, "Hit EOF while reading auxiliary info\n");
6063  ret = AVERROR_INVALIDDATA;
6064  } else {
6065  encryption_index->nb_encrypted_samples = sample_count;
6066  }
6067 
6068 finish:
6069  avio_seek(pb, prev_pos, SEEK_SET);
6070  if (ret < 0) {
6071  for (; i > 0; i--) {
6072  av_encryption_info_free(encryption_index->encrypted_samples[i - 1]);
6073  }
6074  av_freep(&encryption_index->encrypted_samples);
6075  }
6076  return ret;
6077 }
6078 
6079 /**
6080  * Tries to read the given number of bytes from the stream and puts it in a
6081  * newly allocated buffer. This reads in small chunks to avoid allocating large
6082  * memory if the file contains an invalid/malicious size value.
6083  */
6084 static int mov_try_read_block(AVIOContext *pb, size_t size, uint8_t **data)
6085 {
6086  const unsigned int block_size = 1024 * 1024;
6087  uint8_t *buffer = NULL;
6088  unsigned int alloc_size = 0, offset = 0;
6089  while (offset < size) {
6090  unsigned int new_size =
6091  alloc_size >= INT_MAX - block_size ? INT_MAX : alloc_size + block_size;
6092  uint8_t *new_buffer = av_fast_realloc(buffer, &alloc_size, new_size);
6093  unsigned int to_read = FFMIN(size, alloc_size) - offset;
6094  if (!new_buffer) {
6095  av_free(buffer);
6096  return AVERROR(ENOMEM);
6097  }
6098  buffer = new_buffer;
6099 
6100  if (avio_read(pb, buffer + offset, to_read) != to_read) {
6101  av_free(buffer);
6102  return AVERROR_INVALIDDATA;
6103  }
6104  offset += to_read;
6105  }
6106 
6107  *data = buffer;
6108  return 0;
6109 }
6110 
6112 {
6113  MOVEncryptionIndex *encryption_index;
6114  MOVStreamContext *sc;
6115  int ret;
6116  unsigned int sample_count, aux_info_type, aux_info_param;
6117 
6118  ret = get_current_encryption_info(c, &encryption_index, &sc);
6119  if (ret != 1)
6120  return ret;
6121 
6122  if (encryption_index->nb_encrypted_samples) {
6123  // This can happen if we have both saio/saiz and senc atoms.
6124  av_log(c->fc, AV_LOG_DEBUG, "Ignoring duplicate encryption info in saiz\n");
6125  return 0;
6126  }
6127 
6128  if (encryption_index->auxiliary_info_sample_count) {
6129  av_log(c->fc, AV_LOG_ERROR, "Duplicate saiz atom\n");
6130  return AVERROR_INVALIDDATA;
6131  }
6132 
6133  avio_r8(pb); /* version */
6134  if (avio_rb24(pb) & 0x01) { /* flags */
6135  aux_info_type = avio_rb32(pb);
6136  aux_info_param = avio_rb32(pb);
6137  if (sc->cenc.default_encrypted_sample) {
6138  if (aux_info_type != sc->cenc.default_encrypted_sample->scheme) {
6139  av_log(c->fc, AV_LOG_DEBUG, "Ignoring saiz box with non-zero aux_info_type\n");
6140  return 0;
6141  }
6142  if (aux_info_param != 0) {
6143  av_log(c->fc, AV_LOG_DEBUG, "Ignoring saiz box with non-zero aux_info_type_parameter\n");
6144  return 0;
6145  }
6146  } else {
6147  // Didn't see 'schm' or 'tenc', so this isn't encrypted.
6148  if ((aux_info_type == MKBETAG('c','e','n','c') ||
6149  aux_info_type == MKBETAG('c','e','n','s') ||
6150  aux_info_type == MKBETAG('c','b','c','1') ||
6151  aux_info_type == MKBETAG('c','b','c','s')) &&
6152  aux_info_param == 0) {
6153  av_log(c->fc, AV_LOG_ERROR, "Saw encrypted saiz without schm/tenc\n");
6154  return AVERROR_INVALIDDATA;
6155  } else {
6156  return 0;
6157  }
6158  }
6159  } else if (!sc->cenc.default_encrypted_sample) {
6160  // Didn't see 'schm' or 'tenc', so this isn't encrypted.
6161  return 0;
6162  }
6163 
6164  encryption_index->auxiliary_info_default_size = avio_r8(pb);
6165  sample_count = avio_rb32(pb);
6166  encryption_index->auxiliary_info_sample_count = sample_count;
6167 
6168  if (encryption_index->auxiliary_info_default_size == 0) {
6169  ret = mov_try_read_block(pb, sample_count, &encryption_index->auxiliary_info_sizes);
6170  if (ret < 0) {
6171  av_log(c->fc, AV_LOG_ERROR, "Failed to read the auxiliary info\n");
6172  return ret;
6173  }
6174  }
6175 
6176  if (encryption_index->auxiliary_offsets_count) {
6177  return mov_parse_auxiliary_info(c, sc, pb, encryption_index);
6178  }
6179 
6180  return 0;
6181 }
6182 
6184 {
6185  uint64_t *auxiliary_offsets;
6186  MOVEncryptionIndex *encryption_index;
6187  MOVStreamContext *sc;
6188  int i, ret;
6189  unsigned int version, entry_count, aux_info_type, aux_info_param;
6190  unsigned int alloc_size = 0;
6191 
6192  ret = get_current_encryption_info(c, &encryption_index, &sc);
6193  if (ret != 1)
6194  return ret;
6195 
6196  if (encryption_index->nb_encrypted_samples) {
6197  // This can happen if we have both saio/saiz and senc atoms.
6198  av_log(c->fc, AV_LOG_DEBUG, "Ignoring duplicate encryption info in saio\n");
6199  return 0;
6200  }
6201 
6202  if (encryption_index->auxiliary_offsets_count) {
6203  av_log(c->fc, AV_LOG_ERROR, "Duplicate saio atom\n");
6204  return AVERROR_INVALIDDATA;
6205  }
6206 
6207  version = avio_r8(pb); /* version */
6208  if (avio_rb24(pb) & 0x01) { /* flags */
6209  aux_info_type = avio_rb32(pb);
6210  aux_info_param = avio_rb32(pb);
6211  if (sc->cenc.default_encrypted_sample) {
6212  if (aux_info_type != sc->cenc.default_encrypted_sample->scheme) {
6213  av_log(c->fc, AV_LOG_DEBUG, "Ignoring saio box with non-zero aux_info_type\n");
6214  return 0;
6215  }
6216  if (aux_info_param != 0) {
6217  av_log(c->fc, AV_LOG_DEBUG, "Ignoring saio box with non-zero aux_info_type_parameter\n");
6218  return 0;
6219  }
6220  } else {
6221  // Didn't see 'schm' or 'tenc', so this isn't encrypted.
6222  if ((aux_info_type == MKBETAG('c','e','n','c') ||
6223  aux_info_type == MKBETAG('c','e','n','s') ||
6224  aux_info_type == MKBETAG('c','b','c','1') ||
6225  aux_info_type == MKBETAG('c','b','c','s')) &&
6226  aux_info_param == 0) {
6227  av_log(c->fc, AV_LOG_ERROR, "Saw encrypted saio without schm/tenc\n");
6228  return AVERROR_INVALIDDATA;
6229  } else {
6230  return 0;
6231  }
6232  }
6233  } else if (!sc->cenc.default_encrypted_sample) {
6234  // Didn't see 'schm' or 'tenc', so this isn't encrypted.
6235  return 0;
6236  }
6237 
6238  entry_count = avio_rb32(pb);
6239  if (entry_count >= INT_MAX / sizeof(*auxiliary_offsets))
6240  return AVERROR(ENOMEM);
6241 
6242  for (i = 0; i < entry_count && !pb->eof_reached; i++) {
6243  unsigned int min_offsets = FFMIN(FFMAX(i + 1, 1024), entry_count);
6244  auxiliary_offsets = av_fast_realloc(
6245  encryption_index->auxiliary_offsets, &alloc_size,
6246  min_offsets * sizeof(*auxiliary_offsets));
6247  if (!auxiliary_offsets) {
6248  av_freep(&encryption_index->auxiliary_offsets);
6249  return AVERROR(ENOMEM);
6250  }
6251  encryption_index->auxiliary_offsets = auxiliary_offsets;
6252 
6253  if (version == 0) {
6254  encryption_index->auxiliary_offsets[i] = avio_rb32(pb);
6255  } else {
6256  encryption_index->auxiliary_offsets[i] = avio_rb64(pb);
6257  }
6258  if (c->frag_index.current >= 0) {
6259  encryption_index->auxiliary_offsets[i] += c->fragment.base_data_offset;
6260  }
6261  }
6262 
6263  if (pb->eof_reached) {
6264  av_log(c->fc, AV_LOG_ERROR, "Hit EOF while reading saio\n");
6265  av_freep(&encryption_index->auxiliary_offsets);
6266  return AVERROR_INVALIDDATA;
6267  }
6268 
6269  encryption_index->auxiliary_offsets_count = entry_count;
6270 
6271  if (encryption_index->auxiliary_info_sample_count) {
6272  return mov_parse_auxiliary_info(c, sc, pb, encryption_index);
6273  }
6274 
6275  return 0;
6276 }
6277 
6279 {
6280  AVEncryptionInitInfo *info, *old_init_info;
6281  uint8_t **key_ids;
6282  AVStream *st;
6283  uint8_t *side_data, *extra_data, *old_side_data;
6284  size_t side_data_size;
6285  int ret = 0, old_side_data_size;
6286  unsigned int version, kid_count, extra_data_size, alloc_size = 0;
6287 
6288  if (c->fc->nb_streams < 1)
6289  return 0;
6290  st = c->fc->streams[c->fc->nb_streams-1];
6291 
6292  version = avio_r8(pb); /* version */
6293  avio_rb24(pb); /* flags */
6294 
6295  info = av_encryption_init_info_alloc(/* system_id_size */ 16, /* num_key_ids */ 0,
6296  /* key_id_size */ 16, /* data_size */ 0);
6297  if (!info)
6298  return AVERROR(ENOMEM);
6299 
6300  if (avio_read(pb, info->system_id, 16) != 16) {
6301  av_log(c->fc, AV_LOG_ERROR, "Failed to read the system id\n");
6302  ret = AVERROR_INVALIDDATA;
6303  goto finish;
6304  }
6305 
6306  if (version > 0) {
6307  kid_count = avio_rb32(pb);
6308  if (kid_count >= INT_MAX / sizeof(*key_ids))
6309  return AVERROR(ENOMEM);
6310 
6311  for (unsigned int i = 0; i < kid_count && !pb->eof_reached; i++) {
6312  unsigned int min_kid_count = FFMIN(FFMAX(i + 1, 1024), kid_count);
6313  key_ids = av_fast_realloc(info->key_ids, &alloc_size,
6314  min_kid_count * sizeof(*key_ids));
6315  if (!key_ids) {
6316  ret = AVERROR(ENOMEM);
6317  goto finish;
6318  }
6319  info->key_ids = key_ids;
6320 
6321  info->key_ids[i] = av_mallocz(16);
6322  if (!info->key_ids[i]) {
6323  ret = AVERROR(ENOMEM);
6324  goto finish;
6325  }
6326  info->num_key_ids = i + 1;
6327 
6328  if (avio_read(pb, info->key_ids[i], 16) != 16) {
6329  av_log(c->fc, AV_LOG_ERROR, "Failed to read the key id\n");
6330  ret = AVERROR_INVALIDDATA;
6331  goto finish;
6332  }
6333  }
6334 
6335  if (pb->eof_reached) {
6336  av_log(c->fc, AV_LOG_ERROR, "Hit EOF while reading pssh\n");
6337  ret = AVERROR_INVALIDDATA;
6338  goto finish;
6339  }
6340  }
6341 
6342  extra_data_size = avio_rb32(pb);
6343  ret = mov_try_read_block(pb, extra_data_size, &extra_data);
6344  if (ret < 0)
6345  goto finish;
6346 
6347  av_freep(&info->data); // malloc(0) may still allocate something.
6348  info->data = extra_data;
6349  info->data_size = extra_data_size;
6350 
6351  // If there is existing initialization data, append to the list.
6352  old_side_data = av_stream_get_side_data(st, AV_PKT_DATA_ENCRYPTION_INIT_INFO, &old_side_data_size);
6353  if (old_side_data) {
6354  old_init_info = av_encryption_init_info_get_side_data(old_side_data, old_side_data_size);
6355  if (old_init_info) {
6356  // Append to the end of the list.
6357  for (AVEncryptionInitInfo *cur = old_init_info;; cur = cur->next) {
6358  if (!cur->next) {
6359  cur->next = info;
6360  break;
6361  }
6362  }
6363  info = old_init_info;
6364  } else {
6365  // Assume existing side-data will be valid, so the only error we could get is OOM.
6366  ret = AVERROR(ENOMEM);
6367  goto finish;
6368  }
6369  }
6370 
6371  side_data = av_encryption_init_info_add_side_data(info, &side_data_size);
6372  if (!side_data) {
6373  ret = AVERROR(ENOMEM);
6374  goto finish;
6375  }
6377  side_data, side_data_size);
6378  if (ret < 0)
6379  av_free(side_data);
6380 
6381 finish:
6383  return ret;
6384 }
6385 
6387 {
6388  AVStream *st;
6389  MOVStreamContext *sc;
6390 
6391  if (c->fc->nb_streams < 1)
6392  return 0;
6393  st = c->fc->streams[c->fc->nb_streams-1];
6394  sc = st->priv_data;
6395 
6396  if (sc->pseudo_stream_id != 0) {
6397  av_log(c->fc, AV_LOG_ERROR, "schm boxes are only supported in first sample descriptor\n");
6398  return AVERROR_PATCHWELCOME;
6399  }
6400 
6401  if (atom.size < 8)
6402  return AVERROR_INVALIDDATA;
6403 
6404  avio_rb32(pb); /* version and flags */
6405 
6406  if (!sc->cenc.default_encrypted_sample) {
6408  if (!sc->cenc.default_encrypted_sample) {
6409  return AVERROR(ENOMEM);
6410  }
6411  }
6412 
6414  return 0;
6415 }
6416 
6418 {
6419  AVStream *st;
6420  MOVStreamContext *sc;
6421  unsigned int version, pattern, is_protected, iv_size;
6422 
6423  if (c->fc->nb_streams < 1)
6424  return 0;
6425  st = c->fc->streams[c->fc->nb_streams-1];
6426  sc = st->priv_data;
6427 
6428  if (sc->pseudo_stream_id != 0) {
6429  av_log(c->fc, AV_LOG_ERROR, "tenc atom are only supported in first sample descriptor\n");
6430  return AVERROR_PATCHWELCOME;
6431  }
6432 
6433  if (!sc->cenc.default_encrypted_sample) {
6435  if (!sc->cenc.default_encrypted_sample) {
6436  return AVERROR(ENOMEM);
6437  }
6438  }
6439 
6440  if (atom.size < 20)
6441  return AVERROR_INVALIDDATA;
6442 
6443  version = avio_r8(pb); /* version */
6444  avio_rb24(pb); /* flags */
6445 
6446  avio_r8(pb); /* reserved */
6447  pattern = avio_r8(pb);
6448 
6449  if (version > 0) {
6450  sc->cenc.default_encrypted_sample->crypt_byte_block = pattern >> 4;
6451  sc->cenc.default_encrypted_sample->skip_byte_block = pattern & 0xf;
6452  }
6453 
6454  is_protected = avio_r8(pb);
6455  if (is_protected && !sc->cenc.encryption_index) {
6456  // The whole stream should be by-default encrypted.
6458  if (!sc->cenc.encryption_index)
6459  return AVERROR(ENOMEM);
6460  }
6461  sc->cenc.per_sample_iv_size = avio_r8(pb);
6462  if (sc->cenc.per_sample_iv_size != 0 && sc->cenc.per_sample_iv_size != 8 &&
6463  sc->cenc.per_sample_iv_size != 16) {
6464  av_log(c->fc, AV_LOG_ERROR, "invalid per-sample IV size value\n");
6465  return AVERROR_INVALIDDATA;
6466  }
6467  if (avio_read(pb, sc->cenc.default_encrypted_sample->key_id, 16) != 16) {
6468  av_log(c->fc, AV_LOG_ERROR, "failed to read the default key ID\n");
6469  return AVERROR_INVALIDDATA;
6470  }
6471 
6472  if (is_protected && !sc->cenc.per_sample_iv_size) {
6473  iv_size = avio_r8(pb);
6474  if (iv_size != 8 && iv_size != 16) {
6475  av_log(c->fc, AV_LOG_ERROR, "invalid default_constant_IV_size in tenc atom\n");
6476  return AVERROR_INVALIDDATA;
6477  }
6478 
6479  if (avio_read(pb, sc->cenc.default_encrypted_sample->iv, iv_size) != iv_size) {
6480  av_log(c->fc, AV_LOG_ERROR, "failed to read the default IV\n");
6481  return AVERROR_INVALIDDATA;
6482  }
6483  }
6484 
6485  return 0;
6486 }
6487 
6489 {
6490  AVStream *st;
6491  int last, type, size, ret;
6492  uint8_t buf[4];
6493 
6494  if (c->fc->nb_streams < 1)
6495  return 0;
6496  st = c->fc->streams[c->fc->nb_streams-1];
6497 
6498  if ((uint64_t)atom.size > (1<<30) || atom.size < 42)
6499  return AVERROR_INVALIDDATA;
6500 
6501  /* Check FlacSpecificBox version. */
6502  if (avio_r8(pb) != 0)
6503  return AVERROR_INVALIDDATA;
6504 
6505  avio_rb24(pb); /* Flags */
6506 
6507  avio_read(pb, buf, sizeof(buf));
6508  flac_parse_block_header(buf, &last, &type, &size);
6509 
6510  if (type != FLAC_METADATA_TYPE_STREAMINFO || size != FLAC_STREAMINFO_SIZE) {
6511  av_log(c->fc, AV_LOG_ERROR, "STREAMINFO must be first FLACMetadataBlock\n");
6512  return AVERROR_INVALIDDATA;
6513  }
6514 
6515  ret = ff_get_extradata(c->fc, st->codecpar, pb, size);
6516  if (ret < 0)
6517  return ret;
6518 
6519  if (!last)
6520  av_log(c->fc, AV_LOG_WARNING, "non-STREAMINFO FLACMetadataBlock(s) ignored\n");
6521 
6522  return 0;
6523 }
6524 
6526 {
6527  int i, ret;
6528 
6529  if (sample->scheme != MKBETAG('c','e','n','c') || sample->crypt_byte_block != 0 || sample->skip_byte_block != 0) {
6530  av_log(c->fc, AV_LOG_ERROR, "Only the 'cenc' encryption scheme is supported\n");
6531  return AVERROR_PATCHWELCOME;
6532  }
6533 
6534  if (!sc->cenc.aes_ctr) {
6535  /* initialize the cipher */
6536  sc->cenc.aes_ctr = av_aes_ctr_alloc();
6537  if (!sc->cenc.aes_ctr) {
6538  return AVERROR(ENOMEM);
6539  }
6540 
6541  ret = av_aes_ctr_init(sc->cenc.aes_ctr, c->decryption_key);
6542  if (ret < 0) {
6543  return ret;
6544  }
6545  }
6546 
6547  av_aes_ctr_set_full_iv(sc->cenc.aes_ctr, sample->iv);
6548 
6549  if (!sample->subsample_count)
6550  {
6551  /* decrypt the whole packet */
6552  av_aes_ctr_crypt(sc->cenc.aes_ctr, input, input, size);
6553  return 0;
6554  }
6555 
6556  for (i = 0; i < sample->subsample_count; i++)
6557  {
6558  if (sample->subsamples[i].bytes_of_clear_data + sample->subsamples[i].bytes_of_protected_data > size) {
6559  av_log(c->fc, AV_LOG_ERROR, "subsample size exceeds the packet size left\n");
6560  return AVERROR_INVALIDDATA;
6561  }
6562 
6563  /* skip the clear bytes */
6564  input += sample->subsamples[i].bytes_of_clear_data;
6565  size -= sample->subsamples[i].bytes_of_clear_data;
6566 
6567  /* decrypt the encrypted bytes */
6568  av_aes_ctr_crypt(sc->cenc.aes_ctr, input, input, sample->subsamples[i].bytes_of_protected_data);
6569  input += sample->subsamples[i].bytes_of_protected_data;
6570  size -= sample->subsamples[i].bytes_of_protected_data;
6571  }
6572 
6573  if (size > 0) {
6574  av_log(c->fc, AV_LOG_ERROR, "leftover packet bytes after subsample processing\n");
6575  return AVERROR_INVALIDDATA;
6576  }
6577 
6578  return 0;
6579 }
6580 
6581 static int cenc_filter(MOVContext *mov, AVStream* st, MOVStreamContext *sc, AVPacket *pkt, int current_index)
6582 {
6583  MOVFragmentStreamInfo *frag_stream_info;
6584  MOVEncryptionIndex *encryption_index;
6585  AVEncryptionInfo *encrypted_sample;
6586  int encrypted_index, ret;
6587 
6588  frag_stream_info = get_frag_stream_info(&mov->frag_index, mov->frag_index.current, st->id);
6589  encrypted_index = current_index;
6590  encryption_index = NULL;
6591  if (frag_stream_info) {
6592  // Note this only supports encryption info in the first sample descriptor.
6593  if (mov->fragment.stsd_id == 1) {
6594  if (frag_stream_info->encryption_index) {
6595  encrypted_index = current_index - frag_stream_info->index_entry;
6596  encryption_index = frag_stream_info->encryption_index;
6597  } else {
6598  encryption_index = sc->cenc.encryption_index;
6599  }
6600  }
6601  } else {
6602  encryption_index = sc->cenc.encryption_index;
6603  }
6604 
6605  if (encryption_index) {
6606  if (encryption_index->auxiliary_info_sample_count &&
6607  !encryption_index->nb_encrypted_samples) {
6608  av_log(mov->fc, AV_LOG_ERROR, "saiz atom found without saio\n");
6609  return AVERROR_INVALIDDATA;
6610  }
6611  if (encryption_index->auxiliary_offsets_count &&
6612  !encryption_index->nb_encrypted_samples) {
6613  av_log(mov->fc, AV_LOG_ERROR, "saio atom found without saiz\n");
6614  return AVERROR_INVALIDDATA;
6615  }
6616 
6617  if (!encryption_index->nb_encrypted_samples) {
6618  // Full-sample encryption with default settings.
6619  encrypted_sample = sc->cenc.default_encrypted_sample;
6620  } else if (encrypted_index >= 0 && encrypted_index < encryption_index->nb_encrypted_samples) {
6621  // Per-sample setting override.
6622  encrypted_sample = encryption_index->encrypted_samples[encrypted_index];
6623  } else {
6624  av_log(mov->fc, AV_LOG_ERROR, "Incorrect number of samples in encryption info\n");
6625  return AVERROR_INVALIDDATA;
6626  }
6627 
6628  if (mov->decryption_key) {
6629  return cenc_decrypt(mov, sc, encrypted_sample, pkt->data, pkt->size);
6630  } else {
6631  size_t size;
6632  uint8_t *side_data = av_encryption_info_add_side_data(encrypted_sample, &size);
6633  if (!side_data)
6634  return AVERROR(ENOMEM);
6635  ret = av_packet_add_side_data(pkt, AV_PKT_DATA_ENCRYPTION_INFO, side_data, size);
6636  if (ret < 0)
6637  av_free(side_data);
6638  return ret;
6639  }
6640  }
6641 
6642  return 0;
6643 }
6644 
6646 {
6647  const int OPUS_SEEK_PREROLL_MS = 80;
6648  AVStream *st;
6649  size_t size;
6650  uint16_t pre_skip;
6651 
6652  if (c->fc->nb_streams < 1)
6653  return 0;
6654  st = c->fc->streams[c->fc->nb_streams-1];
6655 
6656  if ((uint64_t)atom.size > (1<<30) || atom.size < 11)
6657  return AVERROR_INVALIDDATA;
6658 
6659  /* Check OpusSpecificBox version. */
6660  if (avio_r8(pb) != 0) {
6661  av_log(c->fc, AV_LOG_ERROR, "unsupported OpusSpecificBox version\n");
6662  return AVERROR_INVALIDDATA;
6663  }
6664 
6665  /* OpusSpecificBox size plus magic for Ogg OpusHead header. */
6666  size = atom.size + 8;
6667 
6668  if (ff_alloc_extradata(st->codecpar, size))
6669  return AVERROR(ENOMEM);
6670 
6671  AV_WL32(st->codecpar->extradata, MKTAG('O','p','u','s'));
6672  AV_WL32(st->codecpar->extradata + 4, MKTAG('H','e','a','d'));
6673  AV_WB8(st->codecpar->extradata + 8, 1); /* OpusHead version */
6674  avio_read(pb, st->codecpar->extradata + 9, size - 9);
6675 
6676  /* OpusSpecificBox is stored in big-endian, but OpusHead is
6677  little-endian; aside from the preceeding magic and version they're
6678  otherwise currently identical. Data after output gain at offset 16
6679  doesn't need to be bytewapped. */
6680  pre_skip = AV_RB16(st->codecpar->extradata + 10);
6681  AV_WL16(st->codecpar->extradata + 10, pre_skip);
6682  AV_WL32(st->codecpar->extradata + 12, AV_RB32(st->codecpar->extradata + 12));
6683  AV_WL16(st->codecpar->extradata + 16, AV_RB16(st->codecpar->extradata + 16));
6684 
6685  st->codecpar->initial_padding = pre_skip;
6686  st->codecpar->seek_preroll = av_rescale_q(OPUS_SEEK_PREROLL_MS,
6687  (AVRational){1, 1000},
6688  (AVRational){1, 48000});
6689 
6690  return 0;
6691 }
6692 
6694 { MKTAG('A','C','L','R'), mov_read_aclr },
6695 { MKTAG('A','P','R','G'), mov_read_avid },
6696 { MKTAG('A','A','L','P'), mov_read_avid },
6697 { MKTAG('A','R','E','S'), mov_read_ares },
6698 { MKTAG('a','v','s','s'), mov_read_avss },
6699 { MKTAG('a','v','1','C'), mov_read_av1c },
6700 { MKTAG('c','h','p','l'), mov_read_chpl },
6701 { MKTAG('c','o','6','4'), mov_read_stco },
6702 { MKTAG('c','o','l','r'), mov_read_colr },
6703 { MKTAG('c','t','t','s'), mov_read_ctts }, /* composition time to sample */
6704 { MKTAG('d','i','n','f'), mov_read_default },
6705 { MKTAG('D','p','x','E'), mov_read_dpxe },
6706 { MKTAG('d','r','e','f'), mov_read_dref },
6707 { MKTAG('e','d','t','s'), mov_read_default },
6708 { MKTAG('e','l','s','t'), mov_read_elst },
6709 { MKTAG('e','n','d','a'), mov_read_enda },
6710 { MKTAG('f','i','e','l'), mov_read_fiel },
6711 { MKTAG('a','d','r','m'), mov_read_adrm },
6712 { MKTAG('f','t','y','p'), mov_read_ftyp },
6713 { MKTAG('g','l','b','l'), mov_read_glbl },
6714 { MKTAG('h','d','l','r'), mov_read_hdlr },
6715 { MKTAG('i','l','s','t'), mov_read_ilst },
6716 { MKTAG('j','p','2','h'), mov_read_jp2h },
6717 { MKTAG('m','d','a','t'), mov_read_mdat },
6718 { MKTAG('m','d','h','d'), mov_read_mdhd },
6719 { MKTAG('m','d','i','a'), mov_read_default },
6720 { MKTAG('m','e','t','a'), mov_read_meta },
6721 { MKTAG('m','i','n','f'), mov_read_default },
6722 { MKTAG('m','o','o','f'), mov_read_moof },
6723 { MKTAG('m','o','o','v'), mov_read_moov },
6724 { MKTAG('m','v','e','x'), mov_read_default },
6725 { MKTAG('m','v','h','d'), mov_read_mvhd },
6726 { MKTAG('S','M','I',' '), mov_read_svq3 },
6727 { MKTAG('a','l','a','c'), mov_read_alac }, /* alac specific atom */
6728 { MKTAG('a','v','c','C'), mov_read_glbl },
6729 { MKTAG('p','a','s','p'), mov_read_pasp },
6730 { MKTAG('s','i','d','x'), mov_read_sidx },
6731 { MKTAG('s','t','b','l'), mov_read_default },
6732 { MKTAG('s','t','c','o'), mov_read_stco },
6733 { MKTAG('s','t','p','s'), mov_read_stps },
6734 { MKTAG('s','t','r','f'), mov_read_strf },
6735 { MKTAG('s','t','s','c'), mov_read_stsc },
6736 { MKTAG('s','t','s','d'), mov_read_stsd }, /* sample description */
6737 { MKTAG('s','t','s','s'), mov_read_stss }, /* sync sample */
6738 { MKTAG('s','t','s','z'), mov_read_stsz }, /* sample size */
6739 { MKTAG('s','t','t','s'), mov_read_stts },
6740 { MKTAG('s','t','z','2'), mov_read_stsz }, /* compact sample size */
6741 { MKTAG('t','k','h','d'), mov_read_tkhd }, /* track header */
6742 { MKTAG('t','f','d','t'), mov_read_tfdt },
6743 { MKTAG('t','f','h','d'), mov_read_tfhd }, /* track fragment header */
6744 { MKTAG('t','r','a','k'), mov_read_trak },
6745 { MKTAG('t','r','a','f'), mov_read_default },
6746 { MKTAG('t','r','e','f'), mov_read_default },
6747 { MKTAG('t','m','c','d'), mov_read_tmcd },
6748 { MKTAG('c','h','a','p'), mov_read_chap },
6749 { MKTAG('t','r','e','x'), mov_read_trex },
6750 { MKTAG('t','r','u','n'), mov_read_trun },
6751 { MKTAG('u','d','t','a'), mov_read_default },
6752 { MKTAG('w','a','v','e'), mov_read_wave },
6753 { MKTAG('e','s','d','s'), mov_read_esds },
6754 { MKTAG('d','a','c','3'), mov_read_dac3 }, /* AC-3 info */
6755 { MKTAG('d','e','c','3'), mov_read_dec3 }, /* EAC-3 info */
6756 { MKTAG('d','d','t','s'), mov_read_ddts }, /* DTS audio descriptor */
6757 { MKTAG('w','i','d','e'), mov_read_wide }, /* place holder */
6758 { MKTAG('w','f','e','x'), mov_read_wfex },
6759 { MKTAG('c','m','o','v'), mov_read_cmov },
6760 { MKTAG('c','h','a','n'), mov_read_chan }, /* channel layout */
6761 { MKTAG('d','v','c','1'), mov_read_dvc1 },
6762 { MKTAG('s','b','g','p'), mov_read_sbgp },
6763 { MKTAG('h','v','c','C'), mov_read_glbl },
6764 { MKTAG('u','u','i','d'), mov_read_uuid },
6765 { MKTAG('C','i','n', 0x8e), mov_read_targa_y216 },
6766 { MKTAG('f','r','e','e'), mov_read_free },
6767 { MKTAG('-','-','-','-'), mov_read_custom },
6768 { MKTAG('s','i','n','f'), mov_read_default },
6769 { MKTAG('f','r','m','a'), mov_read_frma },
6770 { MKTAG('s','e','n','c'), mov_read_senc },
6771 { MKTAG('s','a','i','z'), mov_read_saiz },
6772 { MKTAG('s','a','i','o'), mov_read_saio },
6773 { MKTAG('p','s','s','h'), mov_read_pssh },
6774 { MKTAG('s','c','h','m'), mov_read_schm },
6775 { MKTAG('s','c','h','i'), mov_read_default },
6776 { MKTAG('t','e','n','c'), mov_read_tenc },
6777 { MKTAG('d','f','L','a'), mov_read_dfla },
6778 { MKTAG('s','t','3','d'), mov_read_st3d }, /* stereoscopic 3D video box */
6779 { MKTAG('s','v','3','d'), mov_read_sv3d }, /* spherical video box */
6780 { MKTAG('d','O','p','s'), mov_read_dops },
6781 { MKTAG('S','m','D','m'), mov_read_smdm },
6782 { MKTAG('C','o','L','L'), mov_read_coll },
6783 { MKTAG('v','p','c','C'), mov_read_vpcc },
6784 { MKTAG('m','d','c','v'), mov_read_mdcv },
6785 { MKTAG('c','l','l','i'), mov_read_clli },
6786 { 0, NULL }
6787 };
6788 
6790 {
6791  int64_t total_size = 0;
6792  MOVAtom a;
6793  int i;
6794 
6795  if (c->atom_depth > 10) {
6796  av_log(c->fc, AV_LOG_ERROR, "Atoms too deeply nested\n");
6797  return AVERROR_INVALIDDATA;
6798  }
6799  c->atom_depth ++;
6800 
6801  if (atom.size < 0)
6802  atom.size = INT64_MAX;
6803  while (total_size <= atom.size - 8 && !avio_feof(pb)) {
6805  a.size = atom.size;
6806  a.type=0;
6807  if (atom.size >= 8) {
6808  a.size = avio_rb32(pb);
6809  a.type = avio_rl32(pb);
6810  if (a.type == MKTAG('f','r','e','e') &&
6811  a.size >= 8 &&
6813  c->moov_retry) {
6814  uint8_t buf[8];
6815  uint32_t *type = (uint32_t *)buf + 1;
6816  if (avio_read(pb, buf, 8) != 8)
6817  return AVERROR_INVALIDDATA;
6818  avio_seek(pb, -8, SEEK_CUR);
6819  if (*type == MKTAG('m','v','h','d') ||
6820  *type == MKTAG('c','m','o','v')) {
6821  av_log(c->fc, AV_LOG_ERROR, "Detected moov in a free atom.\n");
6822  a.type = MKTAG('m','o','o','v');
6823  }
6824  }
6825  if (atom.type != MKTAG('r','o','o','t') &&
6826  atom.type != MKTAG('m','o','o','v'))
6827  {
6828  if (a.type == MKTAG('t','r','a','k') || a.type == MKTAG('m','d','a','t'))
6829  {
6830  av_log(c->fc, AV_LOG_ERROR, "Broken file, trak/mdat not at top-level\n");
6831  avio_skip(pb, -8);
6832  c->atom_depth --;
6833  return 0;
6834  }
6835  }
6836  total_size += 8;
6837  if (a.size == 1 && total_size + 8 <= atom.size) { /* 64 bit extended size */
6838  a.size = avio_rb64(pb) - 8;
6839  total_size += 8;
6840  }
6841  }
6842  av_log(c->fc, AV_LOG_TRACE, "type:'%s' parent:'%s' sz: %"PRId64" %"PRId64" %"PRId64"\n",
6843  av_fourcc2str(a.type), av_fourcc2str(atom.type), a.size, total_size, atom.size);
6844  if (a.size == 0) {
6845  a.size = atom.size - total_size + 8;
6846  }
6847  a.size -= 8;
6848  if (a.size < 0)
6849  break;
6850  a.size = FFMIN(a.size, atom.size - total_size);
6851 
6852  for (i = 0; mov_default_parse_table[i].type; i++)
6853  if (mov_default_parse_table[i].type == a.type) {
6854  parse = mov_default_parse_table[i].parse;
6855  break;
6856  }
6857 
6858  // container is user data
6859  if (!parse && (atom.type == MKTAG('u','d','t','a') ||
6860  atom.type == MKTAG('i','l','s','t')))
6862 
6863  // Supports parsing the QuickTime Metadata Keys.
6864  // https://developer.apple.com/library/mac/documentation/QuickTime/QTFF/Metadata/Metadata.html
6865  if (!parse && c->found_hdlr_mdta &&
6866  atom.type == MKTAG('m','e','t','a') &&
6867  a.type == MKTAG('k','e','y','s')) {
6868  parse = mov_read_keys;
6869  }
6870 
6871  if (!parse) { /* skip leaf atoms data */
6872  avio_skip(pb, a.size);
6873  } else {
6874  int64_t start_pos = avio_tell(pb);
6875  int64_t left;
6876  int err = parse(c, pb, a);
6877  if (err < 0) {
6878  c->atom_depth --;
6879  return err;
6880  }
6881  if (c->found_moov && c->found_mdat &&
6883  start_pos + a.size == avio_size(pb))) {
6885  c->next_root_atom = start_pos + a.size;
6886  c->atom_depth --;
6887  return 0;
6888  }
6889  left = a.size - avio_tell(pb) + start_pos;
6890  if (left > 0) /* skip garbage at atom end */
6891  avio_skip(pb, left);
6892  else if (left < 0) {
6893  av_log(c->fc, AV_LOG_WARNING,
6894  "overread end of atom '%.4s' by %"PRId64" bytes\n",
6895  (char*)&a.type, -left);
6896  avio_seek(pb, left, SEEK_CUR);
6897  }
6898  }
6899 
6900  total_size += a.size;
6901  }
6902 
6903  if (total_size < atom.size && atom.size < 0x7ffff)
6904  avio_skip(pb, atom.size - total_size);
6905 
6906  c->atom_depth --;
6907  return 0;
6908 }
6909 
6910 static int mov_probe(AVProbeData *p)
6911 {
6912  int64_t offset;
6913  uint32_t tag;
6914  int score = 0;
6915  int moov_offset = -1;
6916 
6917  /* check file header */
6918  offset = 0;
6919  for (;;) {
6920  /* ignore invalid offset */
6921  if ((offset + 8) > (unsigned int)p->buf_size)
6922  break;
6923  tag = AV_RL32(p->buf + offset + 4);
6924  switch(tag) {
6925  /* check for obvious tags */
6926  case MKTAG('m','o','o','v'):
6927  moov_offset = offset + 4;
6928  case MKTAG('m','d','a','t'):
6929  case MKTAG('p','n','o','t'): /* detect movs with preview pics like ew.mov and april.mov */
6930  case MKTAG('u','d','t','a'): /* Packet Video PVAuthor adds this and a lot of more junk */
6931  case MKTAG('f','t','y','p'):
6932  if (AV_RB32(p->buf+offset) < 8 &&
6933  (AV_RB32(p->buf+offset) != 1 ||
6934  offset + 12 > (unsigned int)p->buf_size ||
6935  AV_RB64(p->buf+offset + 8) == 0)) {
6936  score = FFMAX(score, AVPROBE_SCORE_EXTENSION);
6937  } else if (tag == MKTAG('f','t','y','p') &&
6938  ( AV_RL32(p->buf + offset + 8) == MKTAG('j','p','2',' ')
6939  || AV_RL32(p->buf + offset + 8) == MKTAG('j','p','x',' ')
6940  )) {
6941  score = FFMAX(score, 5);
6942  } else {
6943  score = AVPROBE_SCORE_MAX;
6944  }
6945  offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset;
6946  break;
6947  /* those are more common words, so rate then a bit less */
6948  case MKTAG('e','d','i','w'): /* xdcam files have reverted first tags */
6949  case MKTAG('w','i','d','e'):
6950  case MKTAG('f','r','e','e'):
6951  case MKTAG('j','u','n','k'):
6952  case MKTAG('p','i','c','t'):
6953  score = FFMAX(score, AVPROBE_SCORE_MAX - 5);
6954  offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset;
6955  break;
6956  case MKTAG(0x82,0x82,0x7f,0x7d):
6957  case MKTAG('s','k','i','p'):
6958  case MKTAG('u','u','i','d'):
6959  case MKTAG('p','r','f','l'):
6960  /* if we only find those cause probedata is too small at least rate them */
6961  score = FFMAX(score, AVPROBE_SCORE_EXTENSION);
6962  offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset;
6963  break;
6964  default:
6965  offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset;
6966  }
6967  }
6968  if(score > AVPROBE_SCORE_MAX - 50 && moov_offset != -1) {
6969  /* moov atom in the header - we should make sure that this is not a
6970  * MOV-packed MPEG-PS */
6971  offset = moov_offset;
6972 
6973  while(offset < (p->buf_size - 16)){ /* Sufficient space */
6974  /* We found an actual hdlr atom */
6975  if(AV_RL32(p->buf + offset ) == MKTAG('h','d','l','r') &&
6976  AV_RL32(p->buf + offset + 8) == MKTAG('m','h','l','r') &&
6977  AV_RL32(p->buf + offset + 12) == MKTAG('M','P','E','G')){
6978  av_log(NULL, AV_LOG_WARNING, "Found media data tag MPEG indicating this is a MOV-packed MPEG-PS.\n");
6979  /* We found a media handler reference atom describing an
6980  * MPEG-PS-in-MOV, return a
6981  * low score to force expanding the probe window until
6982  * mpegps_probe finds what it needs */
6983  return 5;
6984  }else
6985  /* Keep looking */
6986  offset+=2;
6987  }
6988  }
6989 
6990  return score;
6991 }
6992 
6993 // must be done after parsing all trak because there's no order requirement
6995 {
6996  MOVContext *mov = s->priv_data;
6997  AVStream *st;
6998  MOVStreamContext *sc;
6999  int64_t cur_pos;
7000  int i, j;
7001  int chapter_track;
7002 
7003  for (j = 0; j < mov->nb_chapter_tracks; j++) {
7004  chapter_track = mov->chapter_tracks[j];
7005  st = NULL;
7006  for (i = 0; i < s->nb_streams; i++)
7007  if (s->streams[i]->id == chapter_track) {
7008  st = s->streams[i];
7009  break;
7010  }
7011  if (!st) {
7012  av_log(s, AV_LOG_ERROR, "Referenced QT chapter track not found\n");
7013  continue;
7014  }
7015 
7016  sc = st->priv_data;
7017  cur_pos = avio_tell(sc->pb);
7018 
7019  if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
7021  if (st->nb_index_entries) {
7022  // Retrieve the first frame, if possible
7023  AVPacket pkt;
7024  AVIndexEntry *sample = &st->index_entries[0];
7025  if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
7026  av_log(s, AV_LOG_ERROR, "Failed to retrieve first frame\n");
7027  goto finish;
7028  }
7029 
7030  if (av_get_packet(sc->pb, &pkt, sample->size) < 0)
7031  goto finish;
7032 
7033  st->attached_pic = pkt;
7034  st->attached_pic.stream_index = st->index;
7036  }
7037  } else {
7040  st->discard = AVDISCARD_ALL;
7041  for (i = 0; i < st->nb_index_entries; i++) {
7042  AVIndexEntry *sample = &st->index_entries[i];
7043  int64_t end = i+1 < st->nb_index_entries ? st->index_entries[i+1].timestamp : st->duration;
7044  uint8_t *title;
7045  uint16_t ch;
7046  int len, title_len;
7047 
7048  if (end < sample->timestamp) {
7049  av_log(s, AV_LOG_WARNING, "ignoring stream duration which is shorter than chapters\n");
7050  end = AV_NOPTS_VALUE;
7051  }
7052 
7053  if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
7054  av_log(s, AV_LOG_ERROR, "Chapter %d not found in file\n", i);
7055  goto finish;
7056  }
7057 
7058  // the first two bytes are the length of the title
7059  len = avio_rb16(sc->pb);
7060  if (len > sample->size-2)
7061  continue;
7062  title_len = 2*len + 1;
7063  if (!(title = av_mallocz(title_len)))
7064  goto finish;
7065 
7066  // The samples could theoretically be in any encoding if there's an encd
7067  // atom following, but in practice are only utf-8 or utf-16, distinguished
7068  // instead by the presence of a BOM
7069  if (!len) {
7070  title[0] = 0;
7071  } else {
7072  ch = avio_rb16(sc->pb);
7073  if (ch == 0xfeff)
7074  avio_get_str16be(sc->pb, len, title, title_len);
7075  else if (ch == 0xfffe)
7076  avio_get_str16le(sc->pb, len, title, title_len);
7077  else {
7078  AV_WB16(title, ch);
7079  if (len == 1 || len == 2)
7080  title[len] = 0;
7081  else
7082  avio_get_str(sc->pb, INT_MAX, title + 2, len - 1);
7083  }
7084  }
7085 
7086  avpriv_new_chapter(s, i, st->time_base, sample->timestamp, end, title);
7087  av_freep(&title);
7088  }
7089  }
7090 finish:
7091  avio_seek(sc->pb, cur_pos, SEEK_SET);
7092  }
7093 }
7094 
7096  uint32_t value, int flags)
7097 {
7098  AVTimecode tc;
7099  char buf[AV_TIMECODE_STR_SIZE];
7100  AVRational rate = st->avg_frame_rate;
7101  int ret = av_timecode_init(&tc, rate, flags, 0, s);
7102  if (ret < 0)
7103  return ret;
7104  av_dict_set(&st->metadata, "timecode",
7105  av_timecode_make_string(&tc, buf, value), 0);
7106  return 0;
7107 }
7108 
7110 {
7111  MOVStreamContext *sc = st->priv_data;
7112  char buf[AV_TIMECODE_STR_SIZE];
7113  int64_t cur_pos = avio_tell(sc->pb);
7114  int hh, mm, ss, ff, drop;
7115 
7116  if (!st->nb_index_entries)
7117  return -1;
7118 
7119  avio_seek(sc->pb, st->index_entries->pos, SEEK_SET);
7120  avio_skip(s->pb, 13);
7121  hh = avio_r8(s->pb);
7122  mm = avio_r8(s->pb);
7123  ss = avio_r8(s->pb);
7124  drop = avio_r8(s->pb);
7125  ff = avio_r8(s->pb);
7126  snprintf(buf, AV_TIMECODE_STR_SIZE, "%02d:%02d:%02d%c%02d",
7127  hh, mm, ss, drop ? ';' : ':', ff);
7128  av_dict_set(&st->metadata, "timecode", buf, 0);
7129 
7130  avio_seek(sc->pb, cur_pos, SEEK_SET);
7131  return 0;
7132 }
7133 
7135 {
7136  MOVStreamContext *sc = st->priv_data;
7137  int flags = 0;
7138  int64_t cur_pos = avio_tell(sc->pb);
7139  uint32_t value;
7140 
7141  if (!st->nb_index_entries)
7142  return -1;
7143 
7144  avio_seek(sc->pb, st->index_entries->pos, SEEK_SET);
7145  value = avio_rb32(s->pb);
7146 
7147  if (sc->tmcd_flags & 0x0001) flags |= AV_TIMECODE_FLAG_DROPFRAME;
7148  if (sc->tmcd_flags & 0x0002) flags |= AV_TIMECODE_FLAG_24HOURSMAX;
7149  if (sc->tmcd_flags & 0x0004) flags |= AV_TIMECODE_FLAG_ALLOWNEGATIVE;
7150 
7151  /* Assume Counter flag is set to 1 in tmcd track (even though it is likely
7152  * not the case) and thus assume "frame number format" instead of QT one.
7153  * No sample with tmcd track can be found with a QT timecode at the moment,
7154  * despite what the tmcd track "suggests" (Counter flag set to 0 means QT
7155  * format). */
7156  parse_timecode_in_framenum_format(s, st, value, flags);
7157 
7158  avio_seek(sc->pb, cur_pos, SEEK_SET);
7159  return 0;
7160 }
7161 
7163  int i;
7164  if (!index || !*index) return;
7165  for (i = 0; i < (*index)->nb_encrypted_samples; i++) {
7166  av_encryption_info_free((*index)->encrypted_samples[i]);
7167  }
7168  av_freep(&(*index)->encrypted_samples);
7169  av_freep(&(*index)->auxiliary_info_sizes);
7170  av_freep(&(*index)->auxiliary_offsets);
7171  av_freep(index);
7172 }
7173 
7175 {
7176  MOVContext *mov = s->priv_data;
7177  int i, j;
7178 
7179  for (i = 0; i < s->nb_streams; i++) {
7180  AVStream *st = s->streams[i];
7181  MOVStreamContext *sc = st->priv_data;
7182 
7183  if (!sc)
7184  continue;
7185 
7186  av_freep(&sc->ctts_data);
7187  for (j = 0; j < sc->drefs_count; j++) {
7188  av_freep(&sc->drefs[j].path);
7189  av_freep(&sc->drefs[j].dir);
7190  }
7191  av_freep(&sc->drefs);
7192 
7193  sc->drefs_count = 0;
7194 
7195  if (!sc->pb_is_copied)
7196  ff_format_io_close(s, &sc->pb);
7197 
7198  sc->pb = NULL;
7199  av_freep(&sc->chunk_offsets);
7200  av_freep(&sc->stsc_data);
7201  av_freep(&sc->sample_sizes);
7202  av_freep(&sc->keyframes);
7203  av_freep(&sc->stts_data);
7204  av_freep(&sc->stps_data);
7205  av_freep(&sc->elst_data);
7206  av_freep(&sc->rap_group);
7207  av_freep(&sc->display_matrix);
7208  av_freep(&sc->index_ranges);
7209 
7210  if (sc->extradata)
7211  for (j = 0; j < sc->stsd_count; j++)
7212  av_free(sc->extradata[j]);
7213  av_freep(&sc->extradata);
7214  av_freep(&sc->extradata_size);
7215 
7219 
7220  av_freep(&sc->stereo3d);
7221  av_freep(&sc->spherical);
7222  av_freep(&sc->mastering);
7223  av_freep(&sc->coll);
7224  }
7225 
7226  if (mov->dv_demux) {
7228  mov->dv_fctx = NULL;
7229  }
7230 
7231  if (mov->meta_keys) {
7232  for (i = 1; i < mov->meta_keys_count; i++) {
7233  av_freep(&mov->meta_keys[i]);
7234  }
7235  av_freep(&mov->meta_keys);
7236  }
7237 
7238  av_freep(&mov->trex_data);
7239  av_freep(&mov->bitrates);
7240 
7241  for (i = 0; i < mov->frag_index.nb_items; i++) {
7243  for (j = 0; j < mov->frag_index.item[i].nb_stream_info; j++) {
7244  mov_free_encryption_index(&frag[j].encryption_index);
7245  }
7246  av_freep(&mov->frag_index.item[i].stream_info);
7247  }
7248  av_freep(&mov->frag_index.item);
7249 
7250  av_freep(&mov->aes_decrypt);
7251  av_freep(&mov->chapter_tracks);
7252 
7253  return 0;
7254 }
7255 
7256 static int tmcd_is_referenced(AVFormatContext *s, int tmcd_id)
7257 {
7258  int i;
7259 
7260  for (i = 0; i < s->nb_streams; i++) {
7261  AVStream *st = s->streams[i];
7262  MOVStreamContext *sc = st->priv_data;
7263 
7264  if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
7265  sc->timecode_track == tmcd_id)
7266  return 1;
7267  }
7268  return 0;
7269 }
7270 
7271 /* look for a tmcd track not referenced by any video track, and export it globally */
7273 {
7274  int i;
7275 
7276  for (i = 0; i < s->nb_streams; i++) {
7277  AVStream *st = s->streams[i];
7278 
7279  if (st->codecpar->codec_tag == MKTAG('t','m','c','d') &&
7280  !tmcd_is_referenced(s, i + 1)) {
7281  AVDictionaryEntry *tcr = av_dict_get(st->metadata, "timecode", NULL, 0);
7282  if (tcr) {
7283  av_dict_set(&s->metadata, "timecode", tcr->value, 0);
7284  break;
7285  }
7286  }
7287  }
7288 }
7289 
7290 static int read_tfra(MOVContext *mov, AVIOContext *f)
7291 {
7292  int version, fieldlength, i, j;
7293  int64_t pos = avio_tell(f);
7294  uint32_t size = avio_rb32(f);
7295  unsigned track_id, item_count;
7296 
7297  if (avio_rb32(f) != MKBETAG('t', 'f', 'r', 'a')) {
7298  return 1;
7299  }
7300  av_log(mov->fc, AV_LOG_VERBOSE, "found tfra\n");
7301 
7302  version = avio_r8(f);
7303  avio_rb24(f);
7304  track_id = avio_rb32(f);
7305  fieldlength = avio_rb32(f);
7306  item_count = avio_rb32(f);
7307  for (i = 0; i < item_count; i++) {
7308  int64_t time, offset;
7309  int index;
7310  MOVFragmentStreamInfo * frag_stream_info;
7311 
7312  if (avio_feof(f)) {
7313  return AVERROR_INVALIDDATA;
7314  }
7315 
7316  if (version == 1) {
7317  time = avio_rb64(f);
7318  offset = avio_rb64(f);
7319  } else {
7320  time = avio_rb32(f);
7321  offset = avio_rb32(f);
7322  }
7323 
7324  // The first sample of each stream in a fragment is always a random
7325  // access sample. So it's entry in the tfra can be used as the
7326  // initial PTS of the fragment.
7327  index = update_frag_index(mov, offset);
7328  frag_stream_info = get_frag_stream_info(&mov->frag_index, index, track_id);
7329  if (frag_stream_info &&
7330  frag_stream_info->first_tfra_pts == AV_NOPTS_VALUE)
7331  frag_stream_info->first_tfra_pts = time;
7332 
7333  for (j = 0; j < ((fieldlength >> 4) & 3) + 1; j++)
7334  avio_r8(f);
7335  for (j = 0; j < ((fieldlength >> 2) & 3) + 1; j++)
7336  avio_r8(f);
7337  for (j = 0; j < ((fieldlength >> 0) & 3) + 1; j++)
7338  avio_r8(f);
7339  }
7340 
7341  avio_seek(f, pos + size, SEEK_SET);
7342  return 0;
7343 }
7344 
7346 {
7347  int64_t stream_size = avio_size(f);
7348  int64_t original_pos = avio_tell(f);
7349  int64_t seek_ret;
7350  int32_t mfra_size;
7351  int ret = -1;
7352  if ((seek_ret = avio_seek(f, stream_size - 4, SEEK_SET)) < 0) {
7353  ret = seek_ret;
7354  goto fail;
7355  }
7356  mfra_size = avio_rb32(f);
7357  if (mfra_size < 0 || mfra_size > stream_size) {
7358  av_log(c->fc, AV_LOG_DEBUG, "doesn't look like mfra (unreasonable size)\n");
7359  goto fail;
7360  }
7361  if ((seek_ret = avio_seek(f, -mfra_size, SEEK_CUR)) < 0) {
7362  ret = seek_ret;
7363  goto fail;
7364  }
7365  if (avio_rb32(f) != mfra_size) {
7366  av_log(c->fc, AV_LOG_DEBUG, "doesn't look like mfra (size mismatch)\n");
7367  goto fail;
7368  }
7369  if (avio_rb32(f) != MKBETAG('m', 'f', 'r', 'a')) {
7370  av_log(c->fc, AV_LOG_DEBUG, "doesn't look like mfra (tag mismatch)\n");
7371  goto fail;
7372  }
7373  av_log(c->fc, AV_LOG_VERBOSE, "stream has mfra\n");
7374  do {
7375  ret = read_tfra(c, f);
7376  if (ret < 0)
7377  goto fail;
7378  } while (!ret);
7379  ret = 0;
7380 fail:
7381  seek_ret = avio_seek(f, original_pos, SEEK_SET);
7382  if (seek_ret < 0) {
7383  av_log(c->fc, AV_LOG_ERROR,
7384  "failed to seek back after looking for mfra\n");
7385  ret = seek_ret;
7386  }
7387  return ret;
7388 }
7389 
7391 {
7392  MOVContext *mov = s->priv_data;
7393  AVIOContext *pb = s->pb;
7394  int j, err;
7395  MOVAtom atom = { AV_RL32("root") };
7396  int i;
7397 
7398  if (mov->decryption_key_len != 0 && mov->decryption_key_len != AES_CTR_KEY_SIZE) {
7399  av_log(s, AV_LOG_ERROR, "Invalid decryption key len %d expected %d\n",
7401  return AVERROR(EINVAL);
7402  }
7403 
7404  mov->fc = s;
7405  mov->trak_index = -1;
7406  /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
7407  if (pb->seekable & AVIO_SEEKABLE_NORMAL)
7408  atom.size = avio_size(pb);
7409  else
7410  atom.size = INT64_MAX;
7411 
7412  /* check MOV header */
7413  do {
7414  if (mov->moov_retry)
7415  avio_seek(pb, 0, SEEK_SET);
7416  if ((err = mov_read_default(mov, pb, atom)) < 0) {
7417  av_log(s, AV_LOG_ERROR, "error reading header\n");
7418  mov_read_close(s);
7419  return err;
7420  }
7421  } while ((pb->seekable & AVIO_SEEKABLE_NORMAL) && !mov->found_moov && !mov->moov_retry++);
7422  if (!mov->found_moov) {
7423  av_log(s, AV_LOG_ERROR, "moov atom not found\n");
7424  mov_read_close(s);
7425  return AVERROR_INVALIDDATA;
7426  }
7427  av_log(mov->fc, AV_LOG_TRACE, "on_parse_exit_offset=%"PRId64"\n", avio_tell(pb));
7428 
7429  if (pb->seekable & AVIO_SEEKABLE_NORMAL) {
7430  if (mov->nb_chapter_tracks > 0 && !mov->ignore_chapters)
7431  mov_read_chapters(s);
7432  for (i = 0; i < s->nb_streams; i++)
7433  if (s->streams[i]->codecpar->codec_tag == AV_RL32("tmcd")) {
7434  mov_read_timecode_track(s, s->streams[i]);
7435  } else if (s->streams[i]->codecpar->codec_tag == AV_RL32("rtmd")) {
7436  mov_read_rtmd_track(s, s->streams[i]);
7437  }
7438  }
7439 
7440  /* copy timecode metadata from tmcd tracks to the related video streams */
7441  for (i = 0; i < s->nb_streams; i++) {
7442  AVStream *st = s->streams[i];
7443  MOVStreamContext *sc = st->priv_data;
7444  if (sc->timecode_track > 0) {
7445  AVDictionaryEntry *tcr;
7446  int tmcd_st_id = -1;
7447 
7448  for (j = 0; j < s->nb_streams; j++)
7449  if (s->streams[j]->id == sc->timecode_track)
7450  tmcd_st_id = j;
7451 
7452  if (tmcd_st_id < 0 || tmcd_st_id == i)
7453  continue;
7454  tcr = av_dict_get(s->streams[tmcd_st_id]->metadata, "timecode", NULL, 0);
7455  if (tcr)
7456  av_dict_set(&st->metadata, "timecode", tcr->value, 0);
7457  }
7458  }
7460 
7461  for (i = 0; i < s->nb_streams; i++) {
7462  AVStream *st = s->streams[i];
7463  MOVStreamContext *sc = st->priv_data;
7464  fix_timescale(mov, sc);
7466  st->skip_samples = sc->start_pad;
7467  }
7468  if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && sc->nb_frames_for_fps > 0 && sc->duration_for_fps > 0)
7470  sc->time_scale*(int64_t)sc->nb_frames_for_fps, sc->duration_for_fps, INT_MAX);
7472  if (st->codecpar->width <= 0 || st->codecpar->height <= 0) {
7473  st->codecpar->width = sc->width;
7474  st->codecpar->height = sc->height;
7475  }
7477  if ((err = mov_rewrite_dvd_sub_extradata(st)) < 0)
7478  return err;
7479  }
7480  }
7481  if (mov->handbrake_version &&
7482  mov->handbrake_version <= 1000000*0 + 1000*10 + 2 && // 0.10.2
7484  ) {
7485  av_log(s, AV_LOG_VERBOSE, "Forcing full parsing for mp3 stream\n");
7487  }
7488  }
7489 
7490  if (mov->trex_data) {
7491  for (i = 0; i < s->nb_streams; i++) {
7492  AVStream *st = s->streams[i];
7493  MOVStreamContext *sc = st->priv_data;
7494  if (st->duration > 0) {
7495  if (sc->data_size > INT64_MAX / sc->time_scale / 8) {
7496  av_log(s, AV_LOG_ERROR, "Overflow during bit rate calculation %"PRId64" * 8 * %d\n",
7497  sc->data_size, sc->time_scale);
7498  mov_read_close(s);
7499  return AVERROR_INVALIDDATA;
7500  }
7501  st->codecpar->bit_rate = sc->data_size * 8 * sc->time_scale / st->duration;
7502  }
7503  }
7504  }
7505 
7506  if (mov->use_mfra_for > 0) {
7507  for (i = 0; i < s->nb_streams; i++) {
7508  AVStream *st = s->streams[i];
7509  MOVStreamContext *sc = st->priv_data;
7510  if (sc->duration_for_fps > 0) {
7511  if (sc->data_size > INT64_MAX / sc->time_scale / 8) {
7512  av_log(s, AV_LOG_ERROR, "Overflow during bit rate calculation %"PRId64" * 8 * %d\n",
7513  sc->data_size, sc->time_scale);
7514  mov_read_close(s);
7515  return AVERROR_INVALIDDATA;
7516  }
7517  st->codecpar->bit_rate = sc->data_size * 8 * sc->time_scale /
7518  sc->duration_for_fps;
7519  }
7520  }
7521  }
7522 
7523  for (i = 0; i < mov->bitrates_count && i < s->nb_streams; i++) {
7524  if (mov->bitrates[i]) {
7525  s->streams[i]->codecpar->bit_rate = mov->bitrates[i];
7526  }
7527  }
7528 
7529  ff_rfps_calculate(s);
7530 
7531  for (i = 0; i < s->nb_streams; i++) {
7532  AVStream *st = s->streams[i];
7533  MOVStreamContext *sc = st->priv_data;
7534 
7535  switch (st->codecpar->codec_type) {
7536  case AVMEDIA_TYPE_AUDIO:
7537  err = ff_replaygain_export(st, s->metadata);
7538  if (err < 0) {
7539  mov_read_close(s);
7540  return err;
7541  }
7542  break;
7543  case AVMEDIA_TYPE_VIDEO:
7544  if (sc->display_matrix) {
7546  sizeof(int32_t) * 9);
7547  if (err < 0)
7548  return err;
7549 
7550  sc->display_matrix = NULL;
7551  }
7552  if (sc->stereo3d) {
7554  (uint8_t *)sc->stereo3d,
7555  sizeof(*sc->stereo3d));
7556  if (err < 0)
7557  return err;
7558 
7559  sc->stereo3d = NULL;
7560  }
7561  if (sc->spherical) {
7563  (uint8_t *)sc->spherical,
7564  sc->spherical_size);
7565  if (err < 0)
7566  return err;
7567 
7568  sc->spherical = NULL;
7569  }
7570  if (sc->mastering) {
7572  (uint8_t *)sc->mastering,
7573  sizeof(*sc->mastering));
7574  if (err < 0)
7575  return err;
7576 
7577  sc->mastering = NULL;
7578  }
7579  if (sc->coll) {
7581  (uint8_t *)sc->coll,
7582  sc->coll_size);
7583  if (err < 0)
7584  return err;
7585 
7586  sc->coll = NULL;
7587  }
7588  break;
7589  }
7590  }
7592 
7593  for (i = 0; i < mov->frag_index.nb_items; i++)
7594  if (mov->frag_index.item[i].moof_offset <= mov->fragment.moof_offset)
7595  mov->frag_index.item[i].headers_read = 1;
7596 
7597  return 0;
7598 }
7599 
7601 {
7603  int64_t best_dts = INT64_MAX;
7604  int i;
7605  for (i = 0; i < s->nb_streams; i++) {
7606  AVStream *avst = s->streams[i];
7607  MOVStreamContext *msc = avst->priv_data;
7608  if (msc->pb && msc->current_sample < avst->nb_index_entries) {
7609  AVIndexEntry *current_sample = &avst->index_entries[msc->current_sample];
7610  int64_t dts = av_rescale(current_sample->timestamp, AV_TIME_BASE, msc->time_scale);
7611  av_log(s, AV_LOG_TRACE, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
7612  if (!sample || (!(s->pb->seekable & AVIO_SEEKABLE_NORMAL) && current_sample->pos < sample->pos) ||
7613  ((s->pb->seekable & AVIO_SEEKABLE_NORMAL) &&
7614  ((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb &&
7615  ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
7616  (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) {
7617  sample = current_sample;
7618  best_dts = dts;
7619  *st = avst;
7620  }
7621  }
7622  }
7623  return sample;
7624 }
7625 
7626 static int should_retry(AVIOContext *pb, int error_code) {
7627  if (error_code == AVERROR_EOF || avio_feof(pb))
7628  return 0;
7629 
7630  return 1;
7631 }
7632 
7633 static int mov_switch_root(AVFormatContext *s, int64_t target, int index)
7634 {
7635  int ret;
7636  MOVContext *mov = s->priv_data;
7637 
7638  if (index >= 0 && index < mov->frag_index.nb_items)
7639  target = mov->frag_index.item[index].moof_offset;
7640  if (avio_seek(s->pb, target, SEEK_SET) != target) {
7641  av_log(mov->fc, AV_LOG_ERROR, "root atom offset 0x%"PRIx64": partial file\n", target);
7642  return AVERROR_INVALIDDATA;
7643  }
7644 
7645  mov->next_root_atom = 0;
7646  if (index < 0 || index >= mov->frag_index.nb_items)
7647  index = search_frag_moof_offset(&mov->frag_index, target);
7648  if (index < mov->frag_index.nb_items) {
7649  if (index + 1 < mov->frag_index.nb_items)
7650  mov->next_root_atom = mov->frag_index.item[index + 1].moof_offset;
7651  if (mov->frag_index.item[index].headers_read)
7652  return 0;
7653  mov->frag_index.item[index].headers_read = 1;
7654  }
7655 
7656  mov->found_mdat = 0;
7657 
7658  ret = mov_read_default(mov, s->pb, (MOVAtom){ AV_RL32("root"), INT64_MAX });
7659  if (ret < 0)
7660  return ret;
7661  if (avio_feof(s->pb))
7662  return AVERROR_EOF;
7663  av_log(s, AV_LOG_TRACE, "read fragments, offset 0x%"PRIx64"\n", avio_tell(s->pb));
7664 
7665  return 1;
7666 }
7667 
7669 {
7670  uint8_t *side, *extradata;
7671  int extradata_size;
7672 
7673  /* Save the current index. */
7674  sc->last_stsd_index = sc->stsc_data[sc->stsc_index].id - 1;
7675 
7676  /* Notify the decoder that extradata changed. */
7677  extradata_size = sc->extradata_size[sc->last_stsd_index];
7678  extradata = sc->extradata[sc->last_stsd_index];
7679  if (extradata_size > 0 && extradata) {
7680  side = av_packet_new_side_data(pkt,
7682  extradata_size);
7683  if (!side)
7684  return AVERROR(ENOMEM);
7685  memcpy(side, extradata, extradata_size);
7686  }
7687 
7688  return 0;
7689 }
7690 
7692 {
7693  MOVContext *mov = s->priv_data;
7694  MOVStreamContext *sc;
7696  AVStream *st = NULL;
7697  int64_t current_index;
7698  int ret;
7699  mov->fc = s;
7700  retry:
7701  sample = mov_find_next_sample(s, &st);
7702  if (!sample || (mov->next_root_atom && sample->pos > mov->next_root_atom)) {
7703  if (!mov->next_root_atom)
7704  return AVERROR_EOF;
7705  if ((ret = mov_switch_root(s, mov->next_root_atom, -1)) < 0)
7706  return ret;
7707  goto retry;
7708  }
7709  sc = st->priv_data;
7710  /* must be done just before reading, to avoid infinite loop on sample */
7711  current_index = sc->current_index;
7713 
7714  if (mov->next_root_atom) {
7715  sample->pos = FFMIN(sample->pos, mov->next_root_atom);
7716  sample->size = FFMIN(sample->size, (mov->next_root_atom - sample->pos));
7717  }
7718 
7719  if (st->discard != AVDISCARD_ALL) {
7720  int64_t ret64 = avio_seek(sc->pb, sample->pos, SEEK_SET);
7721  if (ret64 != sample->pos) {
7722  av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
7723  sc->ffindex, sample->pos);
7724  if (should_retry(sc->pb, ret64)) {
7726  }
7727  return AVERROR_INVALIDDATA;
7728  }
7729 
7730  if( st->discard == AVDISCARD_NONKEY && 0==(sample->flags & AVINDEX_KEYFRAME) ) {
7731  av_log(mov->fc, AV_LOG_DEBUG, "Nonkey frame from stream %d discarded due to AVDISCARD_NONKEY\n", sc->ffindex);
7732  goto retry;
7733  }
7734 
7735  ret = av_get_packet(sc->pb, pkt, sample->size);
7736  if (ret < 0) {
7737  if (should_retry(sc->pb, ret)) {
7739  }
7740  return ret;
7741  }
7742  if (sc->has_palette) {
7743  uint8_t *pal;
7744 
7746  if (!pal) {
7747  av_log(mov->fc, AV_LOG_ERROR, "Cannot append palette to packet\n");
7748  } else {
7749  memcpy(pal, sc->palette, AVPALETTE_SIZE);
7750  sc->has_palette = 0;
7751  }
7752  }
7753 #if CONFIG_DV_DEMUXER
7754  if (mov->dv_demux && sc->dv_audio_container) {
7755  avpriv_dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size, pkt->pos);
7756  av_freep(&pkt->data);
7757  pkt->size = 0;
7758  ret = avpriv_dv_get_packet(mov->dv_demux, pkt);
7759  if (ret < 0)
7760  return ret;
7761  }
7762 #endif
7763  if (st->codecpar->codec_id == AV_CODEC_ID_MP3 && !st->need_parsing && pkt->size > 4) {
7764  if (ff_mpa_check_header(AV_RB32(pkt->data)) < 0)
7766  }
7767  }
7768 
7769  pkt->stream_index = sc->ffindex;
7770  pkt->dts = sample->timestamp;
7771  if (sample->flags & AVINDEX_DISCARD_FRAME) {
7772  pkt->flags |= AV_PKT_FLAG_DISCARD;
7773  }
7774  if (sc->ctts_data && sc->ctts_index < sc->ctts_count) {
7775  pkt->pts = pkt->dts + sc->dts_shift + sc->ctts_data[sc->ctts_index].duration;
7776  /* update ctts context */
7777  sc->ctts_sample++;
7778  if (sc->ctts_index < sc->ctts_count &&
7779  sc->ctts_data[sc->ctts_index].count == sc->ctts_sample) {
7780  sc->ctts_index++;
7781  sc->ctts_sample = 0;
7782  }
7783  } else {
7784  int64_t next_dts = (sc->current_sample < st->nb_index_entries) ?
7786 
7787  if (next_dts >= pkt->dts)
7788  pkt->duration = next_dts - pkt->dts;
7789  pkt->pts = pkt->dts;
7790  }
7791  if (st->discard == AVDISCARD_ALL)
7792  goto retry;
7793  pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? AV_PKT_FLAG_KEY : 0;
7794  pkt->pos = sample->pos;
7795 
7796  /* Multiple stsd handling. */
7797  if (sc->stsc_data) {
7798  /* Keep track of the stsc index for the given sample, then check
7799  * if the stsd index is different from the last used one. */
7800  sc->stsc_sample++;
7801  if (mov_stsc_index_valid(sc->stsc_index, sc->stsc_count) &&
7802  mov_get_stsc_samples(sc, sc->stsc_index) == sc->stsc_sample) {
7803  sc->stsc_index++;
7804  sc->stsc_sample = 0;
7805  /* Do not check indexes after a switch. */
7806  } else if (sc->stsc_data[sc->stsc_index].id > 0 &&
7807  sc->stsc_data[sc->stsc_index].id - 1 < sc->stsd_count &&
7808  sc->stsc_data[sc->stsc_index].id - 1 != sc->last_stsd_index) {
7809  ret = mov_change_extradata(sc, pkt);
7810  if (ret < 0)
7811  return ret;
7812  }
7813  }
7814 
7815  if (mov->aax_mode)
7816  aax_filter(pkt->data, pkt->size, mov);
7817 
7818  ret = cenc_filter(mov, st, sc, pkt, current_index);
7819  if (ret < 0)
7820  return ret;
7821 
7822  return 0;
7823 }
7824 
7825 static int mov_seek_fragment(AVFormatContext *s, AVStream *st, int64_t timestamp)
7826 {
7827  MOVContext *mov = s->priv_data;
7828  int index;
7829 
7830  if (!mov->frag_index.complete)
7831  return 0;
7832 
7833  index = search_frag_timestamp(&mov->frag_index, st, timestamp);
7834  if (index < 0)
7835  index = 0;
7836  if (!mov->frag_index.item[index].headers_read)
7837  return mov_switch_root(s, -1, index);
7838  if (index + 1 < mov->frag_index.nb_items)
7839  mov->next_root_atom = mov->frag_index.item[index + 1].moof_offset;
7840 
7841  return 0;
7842 }
7843 
7844 static int mov_seek_stream(AVFormatContext *s, AVStream *st, int64_t timestamp, int flags)
7845 {
7846  MOVStreamContext *sc = st->priv_data;
7847  int sample, time_sample, ret;
7848  unsigned int i;
7849 
7850  // Here we consider timestamp to be PTS, hence try to offset it so that we
7851  // can search over the DTS timeline.
7852  timestamp -= (sc->min_corrected_pts + sc->dts_shift);
7853 
7854  ret = mov_seek_fragment(s, st, timestamp);
7855  if (ret < 0)
7856  return ret;
7857 
7858  sample = av_index_search_timestamp(st, timestamp, flags);
7859  av_log(s, AV_LOG_TRACE, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
7860  if (sample < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
7861  sample = 0;
7862  if (sample < 0) /* not sure what to do */
7863  return AVERROR_INVALIDDATA;
7864  mov_current_sample_set(sc, sample);
7865  av_log(s, AV_LOG_TRACE, "stream %d, found sample %d\n", st->index, sc->current_sample);
7866  /* adjust ctts index */
7867  if (sc->ctts_data) {
7868  time_sample = 0;
7869  for (i = 0; i < sc->ctts_count; i++) {
7870  int next = time_sample + sc->ctts_data[i].count;
7871  if (next > sc->current_sample) {
7872  sc->ctts_index = i;
7873  sc->ctts_sample = sc->current_sample - time_sample;
7874  break;
7875  }
7876  time_sample = next;
7877  }
7878  }
7879 
7880  /* adjust stsd index */
7881  if (sc->chunk_count) {
7882  time_sample = 0;
7883  for (i = 0; i < sc->stsc_count; i++) {
7884  int64_t next = time_sample + mov_get_stsc_samples(sc, i);
7885  if (next > sc->current_sample) {
7886  sc->stsc_index = i;
7887  sc->stsc_sample = sc->current_sample - time_sample;
7888  break;
7889  }
7890  av_assert0(next == (int)next);
7891  time_sample = next;
7892  }
7893  }
7894 
7895  return sample;
7896 }
7897 
7898 static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
7899 {
7900  MOVContext *mc = s->priv_data;
7901  AVStream *st;
7902  int sample;
7903  int i;
7904 
7905  if (stream_index >= s->nb_streams)
7906  return AVERROR_INVALIDDATA;
7907 
7908  st = s->streams[stream_index];
7909  sample = mov_seek_stream(s, st, sample_time, flags);
7910  if (sample < 0)
7911  return sample;
7912 
7913  if (mc->seek_individually) {
7914  /* adjust seek timestamp to found sample timestamp */
7915  int64_t seek_timestamp = st->index_entries[sample].timestamp;
7916 
7917  for (i = 0; i < s->nb_streams; i++) {
7918  int64_t timestamp;
7919  MOVStreamContext *sc = s->streams[i]->priv_data;
7920  st = s->streams[i];
7921  st->skip_samples = (sample_time <= 0) ? sc->start_pad : 0;
7922 
7923  if (stream_index == i)
7924  continue;
7925 
7926  timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
7927  mov_seek_stream(s, st, timestamp, flags);
7928  }
7929  } else {
7930  for (i = 0; i < s->nb_streams; i++) {
7931  MOVStreamContext *sc;
7932  st = s->streams[i];
7933  sc = st->priv_data;
7934  mov_current_sample_set(sc, 0);
7935  }
7936  while (1) {
7937  MOVStreamContext *sc;
7938  AVIndexEntry *entry = mov_find_next_sample(s, &st);
7939  if (!entry)
7940  return AVERROR_INVALIDDATA;
7941  sc = st->priv_data;
7942  if (sc->ffindex == stream_index && sc->current_sample == sample)
7943  break;
7945  }
7946  }
7947  return 0;
7948 }
7949 
7950 #define OFFSET(x) offsetof(MOVContext, x)
7951 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
7952 static const AVOption mov_options[] = {
7953  {"use_absolute_path",
7954  "allow using absolute path when opening alias, this is a possible security issue",
7955  OFFSET(use_absolute_path), AV_OPT_TYPE_BOOL, {.i64 = 0},
7956  0, 1, FLAGS},
7957  {"seek_streams_individually",
7958  "Seek each stream individually to the to the closest point",
7959  OFFSET(seek_individually), AV_OPT_TYPE_BOOL, { .i64 = 1 },
7960  0, 1, FLAGS},
7961  {"ignore_editlist", "Ignore the edit list atom.", OFFSET(ignore_editlist), AV_OPT_TYPE_BOOL, {.i64 = 0},
7962  0, 1, FLAGS},
7963  {"advanced_editlist",
7964  "Modify the AVIndex according to the editlists. Use this option to decode in the order specified by the edits.",
7965  OFFSET(advanced_editlist), AV_OPT_TYPE_BOOL, {.i64 = 1},
7966  0, 1, FLAGS},
7967  {"ignore_chapters", "", OFFSET(ignore_chapters), AV_OPT_TYPE_BOOL, {.i64 = 0},
7968  0, 1, FLAGS},
7969  {"use_mfra_for",
7970  "use mfra for fragment timestamps",
7971  OFFSET(use_mfra_for), AV_OPT_TYPE_INT, {.i64 = FF_MOV_FLAG_MFRA_AUTO},
7973  "use_mfra_for"},
7974  {"auto", "auto", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_MFRA_AUTO}, 0, 0,
7975  FLAGS, "use_mfra_for" },
7976  {"dts", "dts", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_MFRA_DTS}, 0, 0,
7977  FLAGS, "use_mfra_for" },
7978  {"pts", "pts", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_MFRA_PTS}, 0, 0,
7979  FLAGS, "use_mfra_for" },
7980  { "export_all", "Export unrecognized metadata entries", OFFSET(export_all),
7981  AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, .flags = FLAGS },
7982  { "export_xmp", "Export full XMP metadata", OFFSET(export_xmp),
7983  AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, .flags = FLAGS },
7984  { "activation_bytes", "Secret bytes for Audible AAX files", OFFSET(activation_bytes),
7986  { "audible_fixed_key", // extracted from libAAX_SDK.so and AAXSDKWin.dll files!
7987  "Fixed key used for handling Audible AAX files", OFFSET(audible_fixed_key),
7988  AV_OPT_TYPE_BINARY, {.str="77214d4b196a87cd520045fd20a51d67"},
7989  .flags = AV_OPT_FLAG_DECODING_PARAM },
7990  { "decryption_key", "The media decryption key (hex)", OFFSET(decryption_key), AV_OPT_TYPE_BINARY, .flags = AV_OPT_FLAG_DECODING_PARAM },
7991  { "enable_drefs", "Enable external track support.", OFFSET(enable_drefs), AV_OPT_TYPE_BOOL,
7992  {.i64 = 0}, 0, 1, FLAGS },
7993 
7994  { NULL },
7995 };
7996 
7997 static const AVClass mov_class = {
7998  .class_name = "mov,mp4,m4a,3gp,3g2,mj2",
7999  .item_name = av_default_item_name,
8000  .option = mov_options,
8001  .version = LIBAVUTIL_VERSION_INT,
8002 };
8003 
8005  .name = "mov,mp4,m4a,3gp,3g2,mj2",
8006  .long_name = NULL_IF_CONFIG_SMALL("QuickTime / MOV"),
8007  .priv_class = &mov_class,
8008  .priv_data_size = sizeof(MOVContext),
8009  .extensions = "mov,mp4,m4a,3gp,3g2,mj2",
8010  .read_probe = mov_probe,
8016 };
int32_t pitch
Rotation around the right vector [-90, 90].
Definition: spherical.h:127
static int mov_read_targa_y216(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:1725
int itunes_metadata
metadata are itunes style
Definition: isom.h:260
int * bitrates
bitrates read before streams creation
Definition: isom.h:272
static int mov_read_moof(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:1374
void av_sha_final(AVSHA *ctx, uint8_t *digest)
Finish hashing and output digest value.
Definition: sha.c:345
#define AVINDEX_DISCARD_FRAME
Definition: avformat.h:811
int64_t current_index
Definition: isom.h:190
void av_url_split(char *proto, int proto_size, char *authorization, int authorization_size, char *hostname, int hostname_size, int *port_ptr, char *path, int path_size, const char *url)
Split a URL string into components.
Definition: utils.c:4729
AVSphericalMapping * av_spherical_alloc(size_t *size)
Allocate a AVSphericalVideo structure and initialize its fields to default values.
Definition: spherical.c:24
int cid
Definition: mxfenc.c:1949
#define AVSEEK_FLAG_BACKWARD
Definition: avformat.h:2504
int(* io_open)(struct AVFormatContext *s, AVIOContext **pb, const char *url, int flags, AVDictionary **options)
A callback for opening new IO streams.
Definition: avformat.h:1933
int64_t moof_offset
Definition: isom.h:137
#define AV_RB8(x)
Definition: intreadwrite.h:395
size_t auxiliary_offsets_count
Definition: isom.h:124
#define NULL
Definition: coverity.c:32
#define DRM_BLOB_SIZE
Definition: mov.c:986
const char const char void * val
Definition: avisynth_c.h:771
#define FF_API_OLD_ROTATE_API
Definition: version.h:80
enum AVFieldOrder field_order
Video only.
Definition: avcodec.h:3981
discard all frames except keyframes
Definition: avcodec.h:802
static int mov_read_esds(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:777
static int mov_read_enda(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:1515
Bytestream IO Context.
Definition: avio.h:161
enum AVColorTransferCharacteristic color_trc
Definition: avcodec.h:3988
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
static int mov_switch_root(AVFormatContext *s, int64_t target, int index)
Definition: mov.c:7633
int64_t avio_size(AVIOContext *s)
Get the filesize.
Definition: aviobuf.c:336
void * av_realloc(void *ptr, size_t size)
Allocate, reallocate, or free a block of memory.
Definition: mem.c:135
static const char * format[]
Definition: af_aiir.c:330
int size
static int mov_read_dec3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:818
#define av_realloc_f(p, o, n)
uint32_t tmcd_flags
tmcd track flags
Definition: isom.h:208
#define OPUS_SEEK_PREROLL_MS
Definition: oggparseopus.c:35
unsigned int rap_group_count
Definition: isom.h:211
int found_tfhd
Definition: isom.h:90
unsigned int elst_count
Definition: isom.h:176
unsigned MaxCLL
Max content light level (cd/m^2).
void av_encryption_info_free(AVEncryptionInfo *info)
Frees the given encryption info object.
static int mov_read_wide(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:5069
AVOption.
Definition: opt.h:246
hash context
Definition: sha.c:34
MOVTrackExt * trex_data
Definition: isom.h:258
int export_all
Definition: isom.h:270
int64_t end
Definition: isom.h:154
static int mov_change_extradata(MOVStreamContext *sc, AVPacket *pkt)
Definition: mov.c:7668
unsigned track_id
Definition: isom.h:91
#define MOV_TFHD_DEFAULT_DURATION
Definition: isom.h:307
static AVIndexEntry * mov_find_next_sample(AVFormatContext *s, AVStream **st)
Definition: mov.c:7600
uint32_t format
Definition: isom.h:232
static int mov_read_chpl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:535
static int mov_read_keys(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:4300
enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
Definition: utils.c:3125
unsigned int samples_per_frame
Definition: isom.h:194
AVEncryptionInitInfo * av_encryption_init_info_alloc(uint32_t system_id_size, uint32_t num_key_ids, uint32_t key_id_size, uint32_t data_size)
Allocates an AVEncryptionInitInfo structure and sub-pointers to hold the given sizes.
static void mov_build_index(MOVContext *mov, AVStream *st)
Definition: mov.c:3723
int dv_audio_container
Definition: isom.h:195
Definition: isom.h:56
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
Definition: get_bits.h:381
av_cold int av_sha_init(AVSHA *ctx, int bits)
Initialize SHA-1 or SHA-2 hashing.
Definition: sha.c:273
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
float rate
Definition: isom.h:70
uint64_t base_data_offset
Definition: isom.h:92
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
int64_t duration
Definition: isom.h:68
size_t spherical_size
Definition: isom.h:227
int64_t pos
byte position in stream, -1 if unknown
Definition: avcodec.h:1465
unsigned int ctts_allocated_size
Definition: isom.h:167
#define AV_RB64
Definition: intreadwrite.h:164
#define AV_DICT_DONT_OVERWRITE
Don&#39;t overwrite existing entries.
Definition: dict.h:79
void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits, unsigned int pts_num, unsigned int pts_den)
Set the time base and wrapping info for a given stream.
Definition: utils.c:4883
static void skip_bits_long(GetBitContext *s, int n)
Skips the specified number of bits.
Definition: get_bits.h:293
const char * g
Definition: vf_curves.c:115
int ffio_read_size(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
Definition: aviobuf.c:696
char * av_stristr(const char *s1, const char *s2)
Locate the first case-independent occurrence in the string haystack of the string needle...
Definition: avstring.c:56
int64_t pos
Definition: avformat.h:803
static void mov_free_encryption_index(MOVEncryptionIndex **index)
Definition: mov.c:7162
void av_encryption_init_info_free(AVEncryptionInitInfo *info)
Frees the given encryption init info object.
#define AVSEEK_FLAG_ANY
seek to any frame, even non-keyframes
Definition: avformat.h:2506
static av_always_inline float av_int2float(uint32_t i)
Reinterpret a 32-bit integer as a float.
Definition: intfloat.h:40
unsigned int stsc_count
Definition: isom.h:169
int has_palette
Definition: isom.h:206
static int mov_metadata_gnre(MOVContext *c, AVIOContext *pb, unsigned len, const char *key)
Definition: mov.c:123
uint32_t crypt_byte_block
Only used for pattern encryption.
static int read_seek(AVFormatContext *ctx, int stream_index, int64_t timestamp, int flags)
Definition: libcdio.c:153
This side data should be associated with a video stream and contains Stereoscopic 3D information in f...
Definition: avcodec.h:1226
static void set_frag_stream(MOVFragmentIndex *frag_index, int id)
Definition: mov.c:1175
static MOVFragmentStreamInfo * get_current_frag_stream_info(MOVFragmentIndex *frag_index)
Definition: mov.c:1195
Video represents a portion of a sphere mapped on a flat surface using equirectangular projection...
Definition: spherical.h:72
AVEncryptionInfo * default_encrypted_sample
Definition: isom.h:238
AVRational white_point[2]
CIE 1931 xy chromaticity coords of white point.
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: avcodec.h:3900
int allocated_size
Definition: isom.h:145
static int mov_read_trak(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:4162
AVRational sample_aspect_ratio
sample aspect ratio (0 if unknown)
Definition: avformat.h:936
int num
Numerator.
Definition: rational.h:59
AVMasteringDisplayMetadata * mastering
Definition: isom.h:228
int index
stream index in AVFormatContext
Definition: avformat.h:875
int size
Definition: avcodec.h:1446
uint8_t pi<< 24) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_U8,(uint64_t)((*(const uint8_t *) pi - 0x80U))<< 56) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8,(*(const uint8_t *) pi - 0x80) *(1.0f/(1<< 7))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8,(*(const uint8_t *) pi - 0x80) *(1.0/(1<< 7))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16,(*(const int16_t *) pi >>8)+0x80) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S16,(uint64_t)(*(const int16_t *) pi)<< 48) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, *(const int16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, *(const int16_t *) pi *(1.0/(1<< 15))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32,(*(const int32_t *) pi >>24)+0x80) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S32,(uint64_t)(*(const int32_t *) pi)<< 32) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, *(const int32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, *(const int32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S64,(*(const int64_t *) pi >>56)+0x80) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S64, *(const int64_t *) pi *(1.0f/(INT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S64, *(const int64_t *) pi *(1.0/(INT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, av_clip_uint8(lrintf(*(const float *) pi *(1<< 7))+0x80)) CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, av_clip_int16(lrintf(*(const float *) pi *(1<< 15)))) CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, av_clipl_int32(llrintf(*(const float *) pi *(1U<< 31)))) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_FLT, llrintf(*(const float *) pi *(INT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, av_clip_uint8(lrint(*(const double *) pi *(1<< 7))+0x80)) CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, av_clip_int16(lrint(*(const double *) pi *(1<< 15)))) CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, av_clipl_int32(llrint(*(const double *) pi *(1U<< 31)))) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_DBL, llrint(*(const double *) pi *(INT64_C(1)<< 63))) #define FMT_PAIR_FUNC(out, in) static conv_func_type *const fmt_pair_to_conv_functions[AV_SAMPLE_FMT_NB *AV_SAMPLE_FMT_NB]={ FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S64), };static void cpy1(uint8_t **dst, const uint8_t **src, int len){ memcpy(*dst, *src, len);} static void cpy2(uint8_t **dst, const uint8_t **src, int len){ memcpy(*dst, *src, 2 *len);} static void cpy4(uint8_t **dst, const uint8_t **src, int len){ memcpy(*dst, *src, 4 *len);} static void cpy8(uint8_t **dst, const uint8_t **src, int len){ memcpy(*dst, *src, 8 *len);} AudioConvert *swri_audio_convert_alloc(enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels, const int *ch_map, int flags) { AudioConvert *ctx;conv_func_type *f=fmt_pair_to_conv_functions[av_get_packed_sample_fmt(out_fmt)+AV_SAMPLE_FMT_NB *av_get_packed_sample_fmt(in_fmt)];if(!f) return NULL;ctx=av_mallocz(sizeof(*ctx));if(!ctx) return NULL;if(channels==1){ in_fmt=av_get_planar_sample_fmt(in_fmt);out_fmt=av_get_planar_sample_fmt(out_fmt);} ctx->channels=channels;ctx->conv_f=f;ctx->ch_map=ch_map;if(in_fmt==AV_SAMPLE_FMT_U8||in_fmt==AV_SAMPLE_FMT_U8P) memset(ctx->silence, 0x80, sizeof(ctx->silence));if(out_fmt==in_fmt &&!ch_map) { switch(av_get_bytes_per_sample(in_fmt)){ case 1:ctx->simd_f=cpy1;break;case 2:ctx->simd_f=cpy2;break;case 4:ctx->simd_f=cpy4;break;case 8:ctx->simd_f=cpy8;break;} } if(HAVE_X86ASM &&HAVE_MMX) swri_audio_convert_init_x86(ctx, out_fmt, in_fmt, channels);if(ARCH_ARM) swri_audio_convert_init_arm(ctx, out_fmt, in_fmt, channels);if(ARCH_AARCH64) swri_audio_convert_init_aarch64(ctx, out_fmt, in_fmt, channels);return ctx;} void swri_audio_convert_free(AudioConvert **ctx) { av_freep(ctx);} int swri_audio_convert(AudioConvert *ctx, AudioData *out, AudioData *in, int len) { int ch;int off=0;const int os=(out->planar ? 1 :out->ch_count) *out->bps;unsigned misaligned=0;av_assert0(ctx->channels==out->ch_count);if(ctx->in_simd_align_mask) { int planes=in->planar ? in->ch_count :1;unsigned m=0;for(ch=0;ch< planes;ch++) m|=(intptr_t) in->ch[ch];misaligned|=m &ctx->in_simd_align_mask;} if(ctx->out_simd_align_mask) { int planes=out->planar ? out->ch_count :1;unsigned m=0;for(ch=0;ch< planes;ch++) m|=(intptr_t) out->ch[ch];misaligned|=m &ctx->out_simd_align_mask;} if(ctx->simd_f &&!ctx->ch_map &&!misaligned){ off=len &~15;av_assert1(off >=0);av_assert1(off<=len);av_assert2(ctx->channels==SWR_CH_MAX||!in->ch[ctx->channels]);if(off >0){ if(out->planar==in->planar){ int planes=out->planar ? out->ch_count :1;for(ch=0;ch< planes;ch++){ ctx->simd_f(out-> ch ch
Definition: audioconvert.c:56
const char * b
Definition: vf_curves.c:116
#define AV_WB8(p, d)
Definition: intreadwrite.h:396
#define MOV_TRUN_SAMPLE_CTS
Definition: isom.h:318
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
Definition: aviobuf.c:246
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:191
#define AVIO_FLAG_READ
read-only
Definition: avio.h:654
void av_aes_crypt(AVAES *a, uint8_t *dst, const uint8_t *src, int count, uint8_t *iv, int decrypt)
Encrypt or decrypt a buffer using a previously initialized context.
Definition: aes.c:163
uint8_t * decryption_key
Definition: isom.h:287
AVIndexEntry * index_entries
Only used if the format does not support seeking natively.
Definition: avformat.h:1103
This describes encryption info for a packet.
int ignore_chapters
Definition: isom.h:267
static int tmcd_is_referenced(AVFormatContext *s, int tmcd_id)
Definition: mov.c:7256
void * activation_bytes
Definition: isom.h:282
#define tc
Definition: regdef.h:69
int event_flags
Flags for the user to detect events happening on the file.
Definition: avformat.h:1666
AVEncryptionInfo ** encrypted_samples
Definition: isom.h:118
struct MOVStreamContext::@253 cenc
static int mov_read_saiz(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:6111
Video represents a sphere mapped on a flat surface using equirectangular projection.
Definition: spherical.h:56
uint64_t * auxiliary_offsets
Absolute seek position.
Definition: isom.h:123
color_range
void * priv_data
Definition: avformat.h:889
uint8_t * av_encryption_init_info_add_side_data(const AVEncryptionInitInfo *info, size_t *side_data_size)
Allocates and initializes side data that holds a copy of the given encryption init info...
int64_t avio_skip(AVIOContext *s, int64_t offset)
Skip given number of bytes forward.
Definition: aviobuf.c:331
int has_primaries
Flag indicating whether the display primaries (and white point) are set.
const char * key
int version
Definition: avisynth_c.h:766
int16_t audio_cid
stsd audio compression id
Definition: isom.h:197
char ** meta_keys
Definition: isom.h:252
#define PUT_UTF8(val, tmp, PUT_BYTE)
Convert a 32-bit Unicode character to its UTF-8 encoded form (up to 4 bytes long).
Definition: common.h:438
discard all
Definition: avcodec.h:803
Views are next to each other.
Definition: stereo3d.h:67
static int mov_parse_uuid_spherical(MOVStreamContext *sc, AVIOContext *pb, size_t len)
Definition: mov.c:5616
#define IS_MATRIX_IDENT(matrix)
Definition: mov.c:4436
static AVPacket pkt
int height
tkhd height
Definition: isom.h:203
unsigned int avio_rb16(AVIOContext *s)
Definition: aviobuf.c:785
int(* parse)(MOVContext *ctx, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:72
#define src
Definition: vp8dsp.c:254
static int mov_read_udta_string(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:298
#define sample
uint32_t type
Definition: isom.h:83
static int mov_read_uuid(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:5679
uint32_t skip_byte_block
Only used for pattern encryption.
MOVElst * elst_data
Definition: isom.h:175
int avio_get_str16le(AVIOContext *pb, int maxlen, char *buf, int buflen)
Read a UTF-16 string from pb and convert it to UTF-8.
AVStereo3D * av_stereo3d_alloc(void)
Allocate an AVStereo3D structure and set its fields to default values.
Definition: stereo3d.c:28
int strict_std_compliance
Allow non-standard and experimental extension.
Definition: avformat.h:1659
MOVStsc * stsc_data
Definition: isom.h:170
int nb_items
Definition: isom.h:148
static int mov_read_mvhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:1464
int ctts_index
Definition: isom.h:177
int complete
Definition: isom.h:146
unsigned stsd_id
Definition: isom.h:103
AVSphericalMapping * spherical
Definition: isom.h:226
This struct describes the properties of an encoded stream.
Definition: avcodec.h:3892
int found_moov
&#39;moov&#39; atom has been found
Definition: isom.h:248
static int mov_read_stps(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:2711
static void export_orphan_timecode(AVFormatContext *s)
Definition: mov.c:7272
enum AVColorSpace color_space
Definition: avcodec.h:3989
static int mov_read_aclr(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:1780
static MOVFragmentStreamInfo * get_frag_stream_info(MOVFragmentIndex *frag_index, int index, int id)
Definition: mov.c:1156
#define MOV_TFHD_DEFAULT_BASE_IS_MOOF
Definition: isom.h:311
const char * av_color_space_name(enum AVColorSpace space)
Definition: pixdesc.c:2839
Macro definitions for various function/variable attributes.
int frame_size
Audio only.
Definition: avcodec.h:4021
Mastering display metadata (based on SMPTE-2086:2014).
Definition: avcodec.h:1334
static int should_retry(AVIOContext *pb, int error_code)
Definition: mov.c:7626
#define AV_DICT_DONT_STRDUP_KEY
Take ownership of a key that&#39;s been allocated with av_malloc() or another memory allocation function...
Definition: dict.h:73
static int mov_realloc_extradata(AVCodecParameters *par, MOVAtom atom)
Definition: mov.c:1634
int av_get_channel_layout_nb_channels(uint64_t channel_layout)
Return the number of channels in the channel layout.
unsigned flags
Definition: isom.h:106
#define MOV_TKHD_FLAG_ENABLED
Definition: isom.h:330
AVChapter * avpriv_new_chapter(AVFormatContext *s, int id, AVRational time_base, int64_t start, int64_t end, const char *title)
Add a new chapter.
Definition: utils.c:4584
int isom
1 if file is ISO Media (mp4/3gp)
Definition: isom.h:256
int found_mdat
&#39;mdat&#39; atom has been found
Definition: isom.h:249
int width
tkhd width
Definition: isom.h:202
unsigned drefs_count
Definition: isom.h:198
static int mov_read_st3d(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:5436
Format I/O context.
Definition: avformat.h:1351
static int mov_probe(AVProbeData *p)
Definition: mov.c:6910
static int mov_read_header(AVFormatContext *s)
Definition: mov.c:7390
char filename[64]
Definition: isom.h:78
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
Definition: log.h:72
#define AV_WB64(p, v)
Definition: intreadwrite.h:433
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
#define AVFMT_FLAG_IGNIDX
Ignore index.
Definition: avformat.h:1484
void av_aes_ctr_crypt(struct AVAESCTR *a, uint8_t *dst, const uint8_t *src, int count)
Process a buffer using a previously initialized context.
Definition: aes_ctr.c:111
static int mov_parse_stsd_data(MOVContext *c, AVIOContext *pb, AVStream *st, MOVStreamContext *sc, int64_t size)
Definition: mov.c:2287
Public dictionary API.
int avpriv_dict_set_timestamp(AVDictionary **dict, const char *key, int64_t timestamp)
Set a dictionary value to an ISO-8601 compliant timestamp string.
Definition: dict.c:258
MOVDref * drefs
Definition: isom.h:199
static double cb(void *priv, double x, double y)
Definition: vf_geq.c:112
void void avpriv_request_sample(void *avc, const char *msg,...) av_printf_format(2
Log a generic warning message about a missing feature.
static int mov_read_moov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:1138
static char buffer[20]
Definition: seek.c:32
static const AVOption mov_options[]
Definition: mov.c:7952
static void mov_current_sample_dec(MOVStreamContext *sc)
Definition: mov.c:3381
static int64_t start_time
Definition: ffplay.c:330
static av_always_inline double av_int2double(uint64_t i)
Reinterpret a 64-bit integer as a double.
Definition: intfloat.h:60
int first
Definition: isom.h:62
uint8_t
uint8_t ** key_ids
An array of key IDs this initialization data is for.
AVEncryptionInfo * av_encryption_info_clone(const AVEncryptionInfo *info)
Allocates an AVEncryptionInfo structure with a copy of the given data.
#define FF_MOV_FLAG_MFRA_DTS
Definition: isom.h:363
#define av_malloc(s)
static int64_t add_ctts_entry(MOVStts **ctts_data, unsigned int *ctts_count, unsigned int *allocated_size, int count, int duration)
Append a new ctts entry to ctts_data.
Definition: mov.c:3286
Opaque data information usually continuous.
Definition: avutil.h:203
int width
Video only.
Definition: avcodec.h:3966
size_t coll_size
Definition: isom.h:230
AVOptions.
unsigned int sample_count
Definition: isom.h:181
const AVCodecTag ff_codec_movvideo_tags[]
Definition: isom.c:75
#define AV_LOG_TRACE
Extremely verbose debugging, useful for libav* development.
Definition: log.h:202
unsigned int avio_rb32(AVIOContext *s)
Definition: aviobuf.c:800
int count
Definition: isom.h:63
int dts_shift
dts shift when ctts is negative
Definition: isom.h:204
int stsd_version
Definition: isom.h:222
static int mov_read_ddts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:858
#define AVPALETTE_SIZE
Definition: pixfmt.h:32
#define f(width, name)
Definition: cbs_vp9.c:255
unsigned int bytes_of_clear_data
The number of bytes that are clear.
timecode is drop frame
Definition: timecode.h:36
#define AV_RB32
Definition: intreadwrite.h:130
static av_cold int end(AVCodecContext *avctx)
Definition: avrndec.c:90
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
Definition: avcodec.h:1463
static int mov_read_dops(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:6645
This side data contains a 3x3 transformation matrix describing an affine transformation that needs to...
Definition: avcodec.h:1220
enum AVStreamParseType need_parsing
Definition: avformat.h:1092
int id
Format-specific stream ID.
Definition: avformat.h:881
void ff_format_io_close(AVFormatContext *s, AVIOContext **pb)
Definition: utils.c:5671
AVInputFormat ff_mov_demuxer
Definition: mov.c:8004
unsigned int count
Definition: isom.h:110
static int mov_read_cmov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:5089
static int mov_read_sample_encryption_info(MOVContext *c, AVIOContext *pb, MOVStreamContext *sc, AVEncryptionInfo **sample, int use_subsamples)
Definition: mov.c:5912
static int64_t add_index_entry(AVStream *st, int64_t pos, int64_t timestamp, int size, int distance, int flags)
Add index entry with the given values, to the end of st->index_entries.
Definition: mov.c:3231
static void mov_current_sample_inc(MOVStreamContext *sc)
Definition: mov.c:3369
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
Definition: utils.c:4456
uint8_t * av_stream_get_side_data(const AVStream *stream, enum AVPacketSideDataType type, int *size)
Get side information from stream.
Definition: utils.c:5477
int16_t nlvl_to
Definition: isom.h:79
uint32_t scheme
The fourcc encryption scheme, in big-endian byte order.
This file is part of FFmpeg.
This describes info used to initialize an encryption key system.
#define AV_CH_LOW_FREQUENCY
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1419
int64_t duration
Definition: movenc.c:63
char volume[28]
Definition: isom.h:77
static int mov_metadata_int8_no_padding(MOVContext *c, AVIOContext *pb, unsigned len, const char *key)
Definition: mov.c:114
static int mov_read_wfex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:939
AVFormatContext * avformat_alloc_context(void)
Allocate an AVFormatContext.
Definition: options.c:144
static int mov_skip_multiple_stsd(MOVContext *c, AVIOContext *pb, int codec_tag, int format, int64_t size)
Definition: mov.c:2432
int stsd_count
Definition: isom.h:221
int activation_bytes_size
Definition: isom.h:283
int initial_padding
Audio only.
Definition: avcodec.h:4029
const char data[16]
Definition: mxf.c:91
#define height
AVDictionaryEntry * av_dict_get(const AVDictionary *m, const char *key, const AVDictionaryEntry *prev, int flags)
Get a dictionary entry with matching key.
Definition: dict.c:40
static void finish(void)
Definition: movenc.c:345
#define ALAC_EXTRADATA_SIZE
int flags
Flags modifying the (de)muxer behaviour.
Definition: avformat.h:1482
DVDemuxContext * avpriv_dv_init_demux(AVFormatContext *s)
Definition: dv.c:324
uint8_t * data
Definition: avcodec.h:1445
This side data is encryption initialization data.
Definition: avcodec.h:1361
#define MOV_TRUN_SAMPLE_SIZE
Definition: isom.h:316
uint32_t tag
Definition: movenc.c:1478
void ff_configure_buffers_for_index(AVFormatContext *s, int64_t time_tolerance)
Definition: utils.c:2091
int nb_frames_for_fps
Definition: isom.h:214
uint8_t * iv
The initialization vector.
#define ff_dlog(a,...)
#define AVERROR_EOF
End of file.
Definition: error.h:55
bitstream reader API header.
static av_cold int read_close(AVFormatContext *ctx)
Definition: libcdio.c:145
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:192
int av_get_packet(AVIOContext *s, AVPacket *pkt, int size)
Allocate and read the payload of a packet and initialize its fields with default values.
Definition: utils.c:310
struct AVAESCTR * aes_ctr
Definition: isom.h:236
Video is not stereoscopic (and metadata has to be there).
Definition: stereo3d.h:55
static int mov_read_hdlr(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:711
uint64_t avio_rb64(AVIOContext *s)
Definition: aviobuf.c:921
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
Definition: avio.h:557
int has_luminance
Flag indicating whether the luminance (min_ and max_) have been set.
int av_reduce(int *dst_num, int *dst_den, int64_t num, int64_t den, int64_t max)
Reduce a fraction.
Definition: rational.c:35
int ff_replaygain_export(AVStream *st, AVDictionary *metadata)
Parse replaygain tags and export them as per-stream side data.
Definition: replaygain.c:91
static int get_current_encryption_info(MOVContext *c, MOVEncryptionIndex **encryption_index, MOVStreamContext **sc)
Gets the current encryption info and associated current stream context.
Definition: mov.c:5862
static int test_same_origin(const char *src, const char *ref)
Definition: mov.c:4051
#define AV_WB16(p, v)
Definition: intreadwrite.h:405
void * av_realloc_array(void *ptr, size_t nmemb, size_t size)
Allocate, reallocate, or free an array.
Definition: mem.c:198
void av_aes_ctr_free(struct AVAESCTR *a)
Release an AVAESCTR context.
Definition: aes_ctr.c:84
enum AVCodecID video_codec_id
Forced video codec_id.
Definition: avformat.h:1537
uint64_t channel_layout
Audio only.
Definition: avcodec.h:4002
#define av_log(a,...)
int current_sample
Definition: isom.h:189
#define MOV_TFHD_DEFAULT_SIZE
Definition: isom.h:308
int32_t movie_display_matrix[3][3]
display matrix from mvhd
Definition: isom.h:290
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
Definition: aviobuf.c:647
int ff_get_wav_header(AVFormatContext *s, AVIOContext *pb, AVCodecParameters *par, int size, int big_endian)
Definition: riffdec.c:91
AVEncryptionInitInfo * av_encryption_init_info_get_side_data(const uint8_t *side_data, size_t side_data_size)
Creates a copy of the AVEncryptionInitInfo that is contained in the given side data.
static int mov_read_frma(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:5815
unsigned track_id
Definition: isom.h:102
static int mov_try_read_block(AVIOContext *pb, size_t size, uint8_t **data)
Tries to read the given number of bytes from the stream and puts it in a newly allocated buffer...
Definition: mov.c:6084
int64_t bit_rate
The average bitrate of the encoded data (in bits per second).
Definition: avcodec.h:3929
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: avcodec.h:1477
void ff_rfps_calculate(AVFormatContext *ic)
Definition: utils.c:3380
int64_t time_offset
time offset of the edit list entries
Definition: isom.h:187
static int mov_read_custom(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:4343
unsigned int keyframe_count
Definition: isom.h:184
MOVIndexRange * index_ranges
Definition: isom.h:191
AVSubsampleEncryptionInfo * subsamples
An array of subsample encryption info specifying how parts of the sample are encrypted.
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq)
Rescale a 64-bit integer by 2 rational numbers.
Definition: mathematics.c:142
int av_timecode_init(AVTimecode *tc, AVRational rate, int flags, int frame_start, void *log_ctx)
Init a timecode struct with the passed parameters.
Definition: timecode.c:184
int64_t first_tfra_pts
Definition: isom.h:130
const uint16_t avpriv_ac3_channel_layout_tab[8]
Map audio coding mode (acmod) to channel layout mask.
Definition: ac3tab.c:89
static int mov_read_fiel(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:1600
static int mov_read_stsd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:2556
uint8_t * auxiliary_info_sizes
Definition: isom.h:120
static int mov_rewrite_dvd_sub_extradata(AVStream *st)
Definition: mov.c:2252
#define AVINDEX_KEYFRAME
Definition: avformat.h:810
int * extradata_size
Definition: isom.h:219
const AVCodecTag ff_codec_movdata_tags[]
Definition: isom.c:377
static void mov_parse_stsd_subtitle(MOVContext *c, AVIOContext *pb, AVStream *st, MOVStreamContext *sc, int64_t size)
Definition: mov.c:2222
AVCodecID
Identify the syntax and semantics of the bitstream.
Definition: avcodec.h:215
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
#define AV_DICT_MATCH_CASE
Only get an entry with exact-case key match.
Definition: dict.h:69
int av_get_bits_per_sample(enum AVCodecID codec_id)
Return codec bits per sample.
Definition: utils.c:1508
AVDictionary * metadata
Metadata that applies to the whole file.
Definition: avformat.h:1591
unsigned int ctts_count
Definition: isom.h:166
static int mov_read_vpcc(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:5251
An AV_PKT_DATA_PALETTE side data packet contains exactly AVPALETTE_SIZE bytes worth of palette...
Definition: avcodec.h:1158
int64_t tfdt_dts
Definition: isom.h:131
int av_index_search_timestamp(AVStream *st, int64_t timestamp, int flags)
Get the index for a specific timestamp.
Definition: utils.c:2148
static int mov_read_pasp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:954
static int mov_read_mdcv(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:5341
static int mov_read_elst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:5143
static int mov_parse_auxiliary_info(MOVContext *c, MOVStreamContext *sc, AVIOContext *pb, MOVEncryptionIndex *encryption_index)
Definition: mov.c:6017
FLAC (Free Lossless Audio Codec) decoder/demuxer common functions.
AVAudioServiceType
Definition: avcodec.h:806
int stsc_sample
Definition: isom.h:172
#define AV_RB16
Definition: intreadwrite.h:53
unsigned int avio_rl32(AVIOContext *s)
Definition: aviobuf.c:769
#define AVERROR(e)
Definition: error.h:43
static int mov_read_ctts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:2977
int atom_depth
Definition: isom.h:278
uint32_t num_key_ids
The number of key IDs.
static int mov_read_coll(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:5380
static int mov_read_svq3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:1823
static int mov_read_wave(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:1828
int64_t timestamp
Timestamp in AVStream.time_base units, preferably the time from which on correctly decoded frames are...
Definition: avformat.h:804
MOVIndexRange * current_index_range
Definition: isom.h:192
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
Display matrix.
enum AVColorPrimaries color_primaries
Definition: avcodec.h:3987
char * url
input or output URL.
Definition: avformat.h:1447
int video_delay
Video only.
Definition: avcodec.h:3995
const char * r
Definition: vf_curves.c:114
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
int * keyframes
Definition: isom.h:185
preferred ID for decoding MPEG audio layer 1, 2 or 3
Definition: avcodec.h:559
#define av_fourcc2str(fourcc)
Definition: avutil.h:348
enum AVMediaType codec_type
General type of the encoded data.
Definition: avcodec.h:3896
AVFormatContext * fc
Definition: isom.h:245
static int mov_open_dref(MOVContext *c, AVIOContext **pb, const char *src, MOVDref *ref)
Definition: mov.c:4080
simple assert() macros that are a bit more flexible than ISO C assert().
static int mov_read_trun(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:4686
#define FFNABS(a)
Negative Absolute value.
Definition: common.h:81
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:236
int handbrake_version
Definition: isom.h:261
int ctts_sample
Definition: isom.h:178
struct AVAES * av_aes_alloc(void)
Allocate an AVAES context.
Definition: aes.c:31
static int ff_mpa_check_header(uint32_t header)
uint8_t * av_encryption_info_add_side_data(const AVEncryptionInfo *info, size_t *size)
Allocates and initializes side data that holds a copy of the given encryption info.
#define AES_CTR_KEY_SIZE
Definition: aes_ctr.h:30
int skip_samples
Number of samples to skip at the start of the frame decoded from the next packet. ...
Definition: avformat.h:1142
static const uint8_t offset[127][2]
Definition: vf_spp.c:92
int keyframe_absent
Definition: isom.h:183
static int mov_read_sidx(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:4961
AVRational avg_frame_rate
Average framerate.
Definition: avformat.h:947
const AVCodecTag ff_codec_wav_tags[]
Definition: riff.c:481
#define FFMAX(a, b)
Definition: common.h:94
AVRational max_luminance
Max luminance of mastering display (cd/m^2).
int16_t nlvl_from
Definition: isom.h:79
#define MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES
Definition: isom.h:328
int min_distance
Minimum distance between this and the previous keyframe, used to avoid unneeded searching.
Definition: avformat.h:816
#define fail()
Definition: checkasm.h:117
static void mov_metadata_creation_time(AVDictionary **metadata, int64_t time)
Definition: mov.c:1400
AVMasteringDisplayMetadata * av_mastering_display_metadata_alloc(void)
Copyright (c) 2016 Neil Birkbeck neil.birkbeck@gmail.com
void * audible_fixed_key
Definition: isom.h:284
const AVCodecTag ff_codec_movsubtitle_tags[]
Definition: isom.c:370
int64_t min_corrected_pts
minimum Composition time shown by the edits excluding empty edits.
Definition: isom.h:188
static int mov_read_adrm(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:988
#define MIN_DATA_ENTRY_BOX_SIZE
Definition: mov.c:573
int flags
A combination of AV_PKT_FLAG values.
Definition: avcodec.h:1451
const char * av_color_primaries_name(enum AVColorPrimaries primaries)
Definition: pixdesc.c:2791
static int search_frag_timestamp(MOVFragmentIndex *frag_index, AVStream *st, int64_t timestamp)
Definition: mov.c:1270
int extradata_size
Size of the extradata content in bytes.
Definition: avcodec.h:3918
Only parse headers, do not repack.
Definition: avformat.h:794
int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries)
Definition: mov.c:2460
int avio_r8(AVIOContext *s)
Definition: aviobuf.c:638
int av_reallocp_array(void *ptr, size_t nmemb, size_t size)
Allocate, reallocate, or free an array through a pointer to a pointer.
Definition: mem.c:205
struct AVAESCTR * av_aes_ctr_alloc(void)
Allocate an AVAESCTR context.
Definition: aes_ctr.c:36
static float distance(float x, float y, int band)
static int mov_read_tkhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:4444
int buf_size
Size of buf except extra allocated bytes.
Definition: avformat.h:451
static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:6789
AVContentLightMetadata * av_content_light_metadata_alloc(size_t *size)
Allocate an AVContentLightMetadata structure and set its fields to default values.
static int aax_filter(uint8_t *input, int size, MOVContext *c)
Definition: mov.c:1087
static int mov_read_colr(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:1547
#define MAX_REORDER_DELAY
Definition: mov.c:3313
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
Definition: avformat.h:450
AVContentLightMetadata * coll
Definition: isom.h:229
common internal API header
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
Definition: avformat.h:1407
static int mov_read_mdhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:1415
uint32_t bound_bottom
Distance from the bottom edge.
Definition: spherical.h:170
int ff_generate_avci_extradata(AVStream *st)
Generate standard extradata for AVC-Intra based on width/height and field order.
Definition: utils.c:5341
static int mov_seek_stream(AVFormatContext *s, AVStream *st, int64_t timestamp, int flags)
Definition: mov.c:7844
uint8_t file_key[20]
Definition: isom.h:280
static int64_t mov_get_stsc_samples(MOVStreamContext *sc, unsigned int index)
Definition: mov.c:2696
static int mov_metadata_track_or_disc_number(MOVContext *c, AVIOContext *pb, unsigned len, const char *key)
Definition: mov.c:80
int block_align
Audio only.
Definition: avcodec.h:4017
static av_const double hypot(double x, double y)
Definition: libm.h:366
struct AVAES * aes_decrypt
Definition: isom.h:286
static int mov_read_stts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:2884
#define ss(width, name, subs,...)
Definition: cbs_vp9.c:261
int seekable
A combination of AVIO_SEEKABLE_ flags or 0 when the stream is not seekable.
Definition: avio.h:260
static int mov_read_clli(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:5412
struct AVEncryptionInitInfo * next
An optional pointer to the next initialization info in the list.
Video frame is split into 6 faces of a cube, and arranged on a 3x2 layout.
Definition: spherical.h:65
audio channel layout utility functions
int ff_alloc_extradata(AVCodecParameters *par, int size)
Allocate extradata with additional AV_INPUT_BUFFER_PADDING_SIZE at end which is always set to 0...
Definition: utils.c:3288
unsigned int avio_rb24(AVIOContext *s)
Definition: aviobuf.c:793
static int mov_read_chap(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:4603
int64_t av_rescale(int64_t a, int64_t b, int64_t c)
Rescale a 64-bit integer with rounding to nearest.
Definition: mathematics.c:129
Spherical video.
#define AV_TIME_BASE
Internal time base represented as integer.
Definition: avutil.h:254
#define FFMIN(a, b)
Definition: common.h:96
MOVFragmentStreamInfo * stream_info
Definition: isom.h:141
const AVCodecTag ff_codec_bmp_tags[]
Definition: riff.c:32
int av_stream_add_side_data(AVStream *st, enum AVPacketSideDataType type, uint8_t *data, size_t size)
Wrap an existing array as stream side data.
Definition: utils.c:5492
AVStereo3DType
List of possible 3D Types.
Definition: stereo3d.h:51
AVRational min_luminance
Min luminance of mastering display (cd/m^2).
static int mov_read_ftyp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:1101
#define width
#define AV_DICT_DONT_STRDUP_VAL
Take ownership of a value that&#39;s been allocated with av_malloc() or another memory allocation functio...
Definition: dict.h:76
static int mov_read_tmcd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:5212
static int read_probe(AVProbeData *pd)
Definition: jvdec.c:55
char * dir
Definition: isom.h:76
static int mov_stsc_index_valid(unsigned int index, unsigned int count)
Definition: mov.c:2690
static int update_frag_index(MOVContext *c, int64_t offset)
Definition: mov.c:1304
void av_sha_update(struct AVSHA *ctx, const uint8_t *data, unsigned int len)
Update hash value.
Definition: sha.c:315
static int mov_read_senc(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:5963
int id
Definition: isom.h:64
uint8_t auxiliary_info_default_size
Definition: isom.h:122
static int cenc_filter(MOVContext *mov, AVStream *st, MOVStreamContext *sc, AVPacket *pkt, int current_index)
Definition: mov.c:6581
This side data should be associated with a video stream and corresponds to the AVSphericalMapping str...
Definition: avcodec.h:1340
int decryption_key_len
Definition: isom.h:288
static int mov_read_jp2h(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:1707
uint32_t bound_right
Distance from the right edge.
Definition: spherical.h:169
#define FLAGS
Definition: mov.c:7951
static const struct ColorPrimaries color_primaries[AVCOL_PRI_NB]
internal header for RIFF based (de)muxers do NOT include this in end user applications ...
int32_t
static int mov_read_timecode_track(AVFormatContext *s, AVStream *st)
Definition: mov.c:7134
AVFormatContext * ctx
Definition: movenc.c:48
int audible_fixed_key_size
Definition: isom.h:285
static int mov_read_tfhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:4562
static void mov_fix_index(MOVContext *mov, AVStream *st)
Fix st->index_entries, so that it contains only the entries (and the entries which are needed to deco...
Definition: mov.c:3421
static int mov_read_ares(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:1739
int advanced_editlist
Definition: isom.h:266
static int mov_read_tfdt(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:4648
#define AVFMT_EVENT_FLAG_METADATA_UPDATED
The call resulted in updated metadata.
Definition: avformat.h:1667
#define FLAC_STREAMINFO_SIZE
Definition: flac.h:34
static int search_frag_moof_offset(MOVFragmentIndex *frag_index, int64_t offset)
Definition: mov.c:1211
char * path
Definition: isom.h:75
#define FFABS(a)
Absolute value, Note, INT_MIN / INT64_MIN result in undefined behavior as they are not representable ...
Definition: common.h:72
int time_scale
Definition: isom.h:186
#define s(width, name)
Definition: cbs_vp9.c:257
void * av_fast_realloc(void *ptr, unsigned int *size, size_t min_size)
Reallocate the given buffer if it is not large enough, otherwise do nothing.
Definition: mem.c:476
#define AV_RL32
Definition: intreadwrite.h:146
uint64_t moof_offset
Definition: isom.h:93
MOVStts * ctts_data
Definition: isom.h:168
#define OFFSET(x)
Definition: mov.c:7950
int32_t yaw
Rotation around the up vector [-180, 180].
Definition: spherical.h:126
#define MOV_TRUN_SAMPLE_DURATION
Definition: isom.h:315
AVDictionary * metadata
Definition: avformat.h:938
uint8_t * av_stream_new_side_data(AVStream *stream, enum AVPacketSideDataType type, int size)
Allocate new information from stream.
Definition: utils.c:5528
unsigned size
Definition: isom.h:105
enum AVCodecID codec_id
Definition: vaapi_decode.c:364
#define AV_CH_FRONT_CENTER
enum AVColorRange color_range
Video only.
Definition: avcodec.h:3986
int ignore_editlist
Definition: isom.h:265
MOVFragmentIndexItem * item
Definition: isom.h:149
int64_t * chunk_offsets
Definition: isom.h:163
static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
Definition: mov.c:7691
static int mov_read_close(AVFormatContext *s)
Definition: mov.c:7174
unsigned int index
Definition: isom.h:111
static int mov_read_glbl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
This function reads atom content and puts data in extradata without tag nor size unlike mov_read_extr...
Definition: mov.c:1886
MOVFragmentIndex frag_index
Definition: isom.h:277
if(ret< 0)
Definition: vf_mcdeint.c:279
int ff_mov_read_chan(AVFormatContext *s, AVIOContext *pb, AVStream *st, int64_t size)
Read &#39;chan&#39; tag from the input stream.
Definition: mov_chan.c:547
#define AV_DISPOSITION_ATTACHED_PIC
The stream is stored in the file as an attached picture/"cover art" (e.g.
Definition: avformat.h:842
offset must point to a pointer immediately followed by an int for the length
Definition: opt.h:229
#define FF_MOV_FLAG_MFRA_PTS
Definition: isom.h:364
static int cenc_decrypt(MOVContext *c, MOVStreamContext *sc, AVEncryptionInfo *sample, uint8_t *input, int size)
Definition: mov.c:6525
the normal 2^n-1 "JPEG" YUV ranges
Definition: pixfmt.h:512
static int mov_read_av1c(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:5223
int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb)
Definition: mov_esds.c:23
static int read_header(FFV1Context *f)
Definition: ffv1dec.c:530
#define mc
uint32_t padding
Number of pixels to pad from the edge of each cube face.
Definition: spherical.h:182
int64_t duration
duration of the longest track
Definition: isom.h:247
int ff_mov_lang_to_iso639(unsigned code, char to[4])
Definition: isom.c:435
static int mov_read_dfla(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:6488
Stream structure.
Definition: avformat.h:874
static int mov_read_covr(MOVContext *c, AVIOContext *pb, int type, int len)
Definition: mov.c:180
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:62
static int read_packet(void *opaque, uint8_t *buf, int buf_size)
Definition: avio_reading.c:42
AVSphericalProjection
Projection of the video surface(s) on a sphere.
Definition: spherical.h:51
int av_aes_init(AVAES *a, const uint8_t *key, int key_bits, int decrypt)
Initialize an AVAES context.
Definition: aes.c:195
static int mov_metadata_hmmt(MOVContext *c, AVIOContext *pb, unsigned len)
Definition: mov.c:281
Content light level (based on CTA-861.3).
Definition: avcodec.h:1347
unsigned duration
Definition: isom.h:104
DVDemuxContext * dv_demux
Definition: isom.h:254
#define AVIO_SEEKABLE_NORMAL
Seeking works like for a local file.
Definition: avio.h:40
int timecode_track
Definition: isom.h:201
int * sample_sizes
Definition: isom.h:182
The AV_PKT_DATA_NEW_EXTRADATA is used to notify the codec or the format that the extradata buffer was...
Definition: avcodec.h:1167
static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
Definition: mov.c:7898
int ff_rfps_add_frame(AVFormatContext *ic, AVStream *st, int64_t dts)
add frame for rfps calculation.
Definition: utils.c:3322
static const uint32_t mac_to_unicode[128]
Definition: mov.c:139
#define AV_DISPOSITION_DEFAULT
Definition: avformat.h:819
enum AVStereo3DType type
How views are packed within the video.
Definition: stereo3d.h:180
#define AV_LOG_INFO
Standard information.
Definition: log.h:187
static int mov_read_dref(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:574
#define av_bswap32
Definition: bswap.h:33
int av_reallocp(void *ptr, size_t size)
Allocate, reallocate, or free a block of memory through a pointer to a pointer.
Definition: mem.c:163
int ff_get_qtpalette(int codec_id, AVIOContext *pb, uint32_t *palette)
Retrieve the palette (or "color table" in QuickTime terms), either from the video sample description...
Definition: qtpalette.c:31
unsigned duration
Definition: isom.h:96
Views are on top of each other.
Definition: stereo3d.h:79
MOVSbgp * rap_group
Definition: isom.h:212
int avpriv_dv_produce_packet(DVDemuxContext *c, AVPacket *pkt, uint8_t *buf, int buf_size, int64_t pos)
Definition: dv.c:364
const AVCodecTag ff_codec_movaudio_tags[]
Definition: isom.c:313
int duration
Definition: isom.h:58
static int mov_read_pssh(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:6278
static void mov_read_chapters(AVFormatContext *s)
Definition: mov.c:6994
Timecode helpers header.
AVIOContext * pb
I/O context.
Definition: avformat.h:1393
static void mov_parse_stsd_video(MOVContext *c, AVIOContext *pb, AVStream *st, MOVStreamContext *sc)
Definition: mov.c:2057
int * chapter_tracks
Definition: isom.h:262
unsigned int stsz_sample_size
always contains sample size from stsz atom
Definition: isom.h:180
static int read_tfra(MOVContext *mov, AVIOContext *f)
Definition: mov.c:7290
static AVRational av_make_q(int num, int den)
Create an AVRational.
Definition: rational.h:71
Public header for SHA-1 & SHA-256 hash function implementations.
static int mov_read_dac3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:782
unsigned trex_count
Definition: isom.h:259
#define MOV_TRUN_FIRST_SAMPLE_FLAGS
Definition: isom.h:314
#define AV_CH_FRONT_LEFT
static int mov_read_ilst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:4291
timecode wraps after 24 hours
Definition: timecode.h:37
int enable_drefs
Definition: isom.h:289
struct AVSHA * av_sha_alloc(void)
Allocate an AVSHA context.
Definition: sha.c:45
static int64_t get_frag_time(MOVFragmentIndex *frag_index, int index, int track_id)
Definition: mov.c:1249
int64_t data_size
Definition: isom.h:207
static int mov_read_free(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:5793
int has_looked_for_mfra
Definition: isom.h:276
void * buf
Definition: avisynth_c.h:690
int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
Set the given entry in *pm, overwriting an existing entry.
Definition: dict.c:70
uint32_t type
Definition: isom.h:74
int nb_index_entries
Definition: avformat.h:1105
unsigned int count
Definition: isom.h:57
MOVStts * stts_data
Definition: isom.h:165
double value
Definition: eval.c:98
MOVEncryptionIndex * encryption_index
Definition: isom.h:133
Describe the class of an AVClass context structure.
Definition: log.h:67
static int find_prev_closest_index(AVStream *st, AVIndexEntry *e_old, int nb_old, MOVStts *ctts_data, int64_t ctts_count, int64_t timestamp_pts, int flag, int64_t *index, int64_t *ctts_index, int64_t *ctts_sample)
Find the closest previous frame to the timestamp_pts, in e_old index entries.
Definition: mov.c:3135
static void skip_bits(GetBitContext *s, int n)
Definition: get_bits.h:460
#define AV_WB32(p, v)
Definition: intreadwrite.h:419
int index
Definition: gxfenc.c:89
unsigned int bytes_of_protected_data
The number of bytes that are protected.
int32_t roll
Rotation around the forward vector [-180, 180].
Definition: spherical.h:128
Rational number (pair of numerator and denominator).
Definition: rational.h:58
unsigned int aax_mode
&#39;aax&#39; file has been detected
Definition: isom.h:279
#define isnan(x)
Definition: libm.h:340
#define AV_DISPOSITION_TIMED_THUMBNAILS
The stream is sparse, and contains thumbnail images, often corresponding to chapter markers...
Definition: avformat.h:847
static int mov_read_dpxe(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:1712
#define AV_OPT_FLAG_DECODING_PARAM
a generic parameter which can be set by the user for demuxing or decoding
Definition: opt.h:277
MOVFragment fragment
current fragment in moof atom
Definition: isom.h:257
AVFieldOrder
Definition: avcodec.h:1511
static int init_get_bits(GetBitContext *s, const uint8_t *buffer, int bit_size)
Initialize GetBitContext.
Definition: get_bits.h:615
static void mov_estimate_video_delay(MOVContext *c, AVStream *st)
Definition: mov.c:3314
AVRational display_aspect_ratio
display aspect ratio (0 if unknown)
Definition: avformat.h:1225
int av_packet_add_side_data(AVPacket *pkt, enum AVPacketSideDataType type, uint8_t *data, size_t size)
Wrap an existing array as a packet side data.
Definition: avpacket.c:295
int64_t track_end
used for dts generation in fragmented movie files
Definition: isom.h:209
Definition: isom.h:82
static enum AVCodecID ff_mov_get_lpcm_codec_id(int bps, int flags)
Compute codec id for &#39;lpcm&#39; tag.
Definition: isom.h:370
int use_mfra_for
Definition: isom.h:275
static av_always_inline void flac_parse_block_header(const uint8_t *block_header, int *last, int *type, int *size)
Parse the metadata block parameters from the header.
Definition: flac.h:145
static void mov_parse_stsd_audio(MOVContext *c, AVIOContext *pb, AVStream *st, MOVStreamContext *sc)
Definition: mov.c:2113
size_t av_strlcatf(char *dst, size_t size, const char *fmt,...)
Definition: avstring.c:101
static int mov_read_mac_string(MOVContext *c, AVIOContext *pb, int len, char *dst, int dstlen)
Definition: mov.c:158
#define MOV_TFHD_DEFAULT_FLAGS
Definition: isom.h:309
static int mov_read_schm(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:6386
static int mov_read_tenc(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:6417
This side data contains encryption info for how to decrypt the packet.
Definition: avcodec.h:1367
#define FF_COMPLIANCE_STRICT
Strictly conform to all the things in the spec no matter what consequences.
Definition: avcodec.h:2594
#define snprintf
Definition: snprintf.h:34
#define AVPROBE_SCORE_EXTENSION
score for file extension
Definition: avformat.h:458
void avformat_free_context(AVFormatContext *s)
Free an AVFormatContext and all its streams.
Definition: utils.c:4390
#define FF_MOV_FLAG_MFRA_AUTO
Definition: isom.h:362
int64_t time
Definition: isom.h:69
int pb_is_copied
Definition: isom.h:159
#define MOV_TRUN_SAMPLE_FLAGS
Definition: isom.h:317
This structure contains the data a format has to probe a file.
Definition: avformat.h:448
static unsigned int get_bits_long(GetBitContext *s, int n)
Read 0-32 bits.
Definition: get_bits.h:531
#define TAG_IS_AVCI(tag)
Definition: isom.h:340
#define MOV_TFHD_STSD_ID
Definition: isom.h:306
static int mov_read_stss(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:2747
AVFormatContext * dv_fctx
Definition: isom.h:255
size_t av_strlcat(char *dst, const char *src, size_t size)
Append the string src to the string dst, but to a total length of no more than size - 1 bytes...
Definition: avstring.c:93
unsigned int stsc_index
Definition: isom.h:171
AVRational display_primaries[3][2]
CIE 1931 xy chromaticity coords of color primaries (r, g, b order).
int seek_preroll
Audio only.
Definition: avcodec.h:4040
uint32_t subsample_count
uint64_t implicit_offset
Definition: isom.h:94
static int64_t pts
#define flags(name, subs,...)
Definition: cbs_av1.c:606
AVStereo3D * stereo3d
Definition: isom.h:225
static void mov_update_dts_shift(MOVStreamContext *sc, int duration)
Definition: mov.c:2966
unsigned int per_sample_iv_size
Definition: isom.h:237
static int mov_read_meta(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:4421
#define AV_CH_SIDE_RIGHT
char * av_timecode_make_string(const AVTimecode *tc, char *buf, int framenum)
Load timecode string in buf.
Definition: timecode.c:84
unsigned * stps_data
partial sync sample for mpeg-2 open gop
Definition: isom.h:174
AVRational av_d2q(double d, int max)
Convert a double precision floating point number to a rational.
Definition: rational.c:106
uint32_t bound_top
Distance from the top edge.
Definition: spherical.h:168
the normal 219*2^(n-8) "MPEG" YUV ranges
Definition: pixfmt.h:511
static int mov_read_mdat(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:978
static int mov_metadata_int8_bypass_padding(MOVContext *c, AVIOContext *pb, unsigned len, const char *key)
Definition: mov.c:100
int ffio_ensure_seekback(AVIOContext *s, int64_t buf_size)
Ensures that the requested seekback buffer size will be available.
Definition: aviobuf.c:1051
int64_t duration
Decoding: duration of the stream, in stream time base.
Definition: avformat.h:923
int64_t sidx_pts
Definition: isom.h:129
static av_always_inline AVRational av_inv_q(AVRational q)
Invert a rational.
Definition: rational.h:159
int sample_rate
Audio only.
Definition: avcodec.h:4010
#define AVPROBE_SCORE_MAX
maximum score
Definition: avformat.h:460
static int mov_read_avid(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:1717
MPEG Audio header decoder.
int start_pad
amount of samples to skip due to enc-dec delay
Definition: isom.h:210
int trak_index
Index of the current &#39;trak&#39;.
Definition: isom.h:251
negative time values are allowed
Definition: timecode.h:38
full parsing and repack
Definition: avformat.h:793
Main libavformat public API header.
int32_t * display_matrix
Definition: isom.h:224
int
AVIOContext * pb
Definition: isom.h:158
static void fix_index_entry_timestamps(AVStream *st, int end_index, int64_t end_ts, int64_t *frame_duration_buffer, int frame_duration_buffer_size)
Rewrite timestamps of index entries in the range [end_index - frame_duration_buffer_size, end_index) by subtracting end_ts successively by the amounts given in frame_duration_buffer.
Definition: mov.c:3271
static int mov_read_strf(MOVContext *c, AVIOContext *pb, MOVAtom atom)
An strf atom is a BITMAPINFOHEADER struct.
Definition: mov.c:1952
#define AV_PKT_FLAG_DISCARD
Flag is used to discard packets which are required to maintain valid decoder state but are not requir...
Definition: avcodec.h:1484
unsigned int bytes_per_frame
Definition: isom.h:193
#define FF_DISABLE_DEPRECATION_WARNINGS
Definition: internal.h:84
unsigned flags
Definition: isom.h:98
int bitrates_count
Definition: isom.h:273
uint8_t * key_id
The ID of the key used to encrypt the packet.
static int mov_read_rtmd_track(AVFormatContext *s, AVStream *st)
Definition: mov.c:7109
#define MOV_TFHD_BASE_DATA_OFFSET
Definition: isom.h:305
static int ref[MAX_W *MAX_W]
Definition: jpeg2000dwt.c:107
int64_t size
Definition: isom.h:84
enum AVSphericalProjection projection
Projection type.
Definition: spherical.h:86
static int mov_read_smdm(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:5295
int export_xmp
Definition: isom.h:271
int seek_individually
Definition: isom.h:268
int ffio_init_context(AVIOContext *s, unsigned char *buffer, int buffer_size, int write_flag, void *opaque, int(*read_packet)(void *opaque, uint8_t *buf, int buf_size), int(*write_packet)(void *opaque, uint8_t *buf, int buf_size), int64_t(*seek)(void *opaque, int64_t offset, int whence))
Definition: aviobuf.c:81
int avio_get_str16be(AVIOContext *pb, int maxlen, char *buf, int buflen)
static const MOVParseTableEntry mov_default_parse_table[]
Definition: mov.c:6693
static int get_edit_list_entry(MOVContext *mov, const MOVStreamContext *msc, unsigned int edit_list_index, int64_t *edit_list_media_time, int64_t *edit_list_duration, int64_t global_timescale)
Get ith edit list entry (media time, duration).
Definition: mov.c:3093
static int parse_timecode_in_framenum_format(AVFormatContext *s, AVStream *st, uint32_t value, int flags)
Definition: mov.c:7095
int64_t start_time
Decoding: pts of the first frame of the stream in presentation order, in stream time base...
Definition: avformat.h:913
#define flag(name)
Definition: cbs_av1.c:598
static double c[64]
const char * av_color_transfer_name(enum AVColorTransferCharacteristic transfer)
Definition: pixdesc.c:2815
int av_dict_set_int(AVDictionary **pm, const char *key, int64_t value, int flags)
Convenience wrapper for av_dict_set that converts the value to a string and stores it...
Definition: dict.c:147
static int mov_read_chan(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:920
unsigned int stps_count
Definition: isom.h:173
int disposition
AV_DISPOSITION_* bit field.
Definition: avformat.h:927
int ff_get_extradata(AVFormatContext *s, AVCodecParameters *par, AVIOContext *pb, int size)
Allocate extradata with additional AV_INPUT_BUFFER_PADDING_SIZE at end which is always set to 0 and f...
Definition: utils.c:3306
unsigned int chunk_count
Definition: isom.h:162
#define AV_WL16(p, v)
Definition: intreadwrite.h:412
Stereoscopic video.
uint8_t * data
Key-system specific initialization data.
static int mov_codec_id(AVStream *st, uint32_t format)
Definition: mov.c:2022
int64_t nb_frames
number of frames in this stream if known or 0
Definition: avformat.h:925
int den
Denominator.
Definition: rational.h:60
int avpriv_dv_get_packet(DVDemuxContext *c, AVPacket *pkt)
Definition: dv.c:347
int64_t start
Definition: isom.h:153
unsigned meta_keys_count
Definition: isom.h:253
static int mov_metadata_loci(MOVContext *c, AVIOContext *pb, unsigned len)
Definition: mov.c:231
#define MKBETAG(a, b, c, d)
Definition: common.h:367
static int mov_read_stco(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:1975
uint32_t palette[256]
Definition: isom.h:205
#define AV_INPUT_BUFFER_PADDING_SIZE
Required number of additionally allocated bytes at the end of the input bitstream for decoding...
Definition: avcodec.h:782
unsigned stsd_id
Definition: isom.h:95
static int mov_seek_fragment(AVFormatContext *s, AVStream *st, int64_t timestamp)
Definition: mov.c:7825
unsigned int index_entries_allocated_size
Definition: avformat.h:1106
MOVEncryptionIndex * encryption_index
Definition: isom.h:239
#define av_free(p)
#define AVFMT_NO_BYTE_SEEK
Format does not allow seeking by bytes.
Definition: avformat.h:477
static void fix_frag_index_entries(MOVFragmentIndex *frag_index, int index, int id, int entries)
Definition: mov.c:1359
static int mov_finalize_stsd_codec(MOVContext *c, AVIOContext *pb, AVStream *st, MOVStreamContext *sc)
Definition: mov.c:2353
char * value
Definition: dict.h:87
int eof_reached
true if eof reached
Definition: avio.h:239
static int mov_read_avss(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:1702
#define FF_ENABLE_DEPRECATION_WARNINGS
Definition: internal.h:85
as in Berlin toast format
Definition: avcodec.h:576
int len
static int mov_read_extradata(MOVContext *c, AVIOContext *pb, MOVAtom atom, enum AVCodecID codec_id)
Definition: mov.c:1671
unsigned int stts_count
Definition: isom.h:164
int av_aes_ctr_init(struct AVAESCTR *a, const uint8_t *key)
Initialize an AVAESCTR context.
Definition: aes_ctr.c:69
unsigned int sample_size
may contain value calculated from stsd or value from stsz atom
Definition: isom.h:179
static int mov_read_sv3d(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:5479
uint32_t type
Definition: mov.c:71
void * priv_data
Format private data.
Definition: avformat.h:1379
static int mov_read_mfra(MOVContext *c, AVIOContext *f)
Definition: mov.c:7345
uint8_t file_iv[20]
Definition: isom.h:281
static const AVClass mov_class
Definition: mov.c:7997
#define lrint
Definition: tablegen.h:53
uint32_t bound_left
Distance from the left edge.
Definition: spherical.h:167
static int64_t get_stream_info_time(MOVFragmentStreamInfo *frag_stream_info)
Definition: mov.c:1235
uint64_t layout
int bits_per_coded_sample
The number of bits per sample in the codedwords.
Definition: avcodec.h:3942
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
Definition: avcodec.h:3914
#define MOV_TRUN_DATA_OFFSET
Definition: isom.h:313
int64_t next_root_atom
offset of the next root atom
Definition: isom.h:269
int last_stsd_index
Definition: isom.h:220
unsigned int nb_encrypted_samples
Definition: isom.h:117
int channels
Audio only.
Definition: avcodec.h:4006
unsigned int nb_chapter_tracks
Definition: isom.h:263
int time_scale
Definition: isom.h:246
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed...
Definition: avcodec.h:1444
static int mov_read_dvc1(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:1921
Definition: isom.h:67
int pseudo_stream_id
-1 means demux all ids
Definition: isom.h:196
#define AV_CH_FRONT_RIGHT
static int64_t mov_read_atom_into_extradata(MOVContext *c, AVIOContext *pb, MOVAtom atom, AVCodecParameters *par, uint8_t *buf)
Definition: mov.c:1649
double av_display_rotation_get(const int32_t matrix[9])
Extract the rotation component of the transformation matrix.
Definition: display.c:34
int64_t duration
Duration of the stream, in AV_TIME_BASE fractional seconds.
Definition: avformat.h:1466
int ffindex
AVStream index.
Definition: isom.h:160
uint8_t ** extradata
extradata array (and size) for multiple stsd
Definition: isom.h:218
FILE * out
Definition: movenc.c:54
int use_absolute_path
Definition: isom.h:264
AVEncryptionInfo * av_encryption_info_alloc(uint32_t subsample_count, uint32_t key_id_size, uint32_t iv_size)
Allocates an AVEncryptionInfo structure and sub-pointers to hold the given number of subsamples...
#define av_freep(p)
void INT64 INT64 count
Definition: avisynth_c.h:690
static int mov_read_trex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:4622
void INT64 start
Definition: avisynth_c.h:690
const char * name
A comma separated list of short names for the format.
Definition: avformat.h:647
static int mov_read_stsc(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:2621
static void mov_current_sample_set(MOVStreamContext *sc, int current_sample)
Definition: mov.c:3393
#define AV_LOG_FATAL
Something went wrong and recovery is not possible.
Definition: log.h:170
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:1021
unsigned size
Definition: isom.h:97
#define av_malloc_array(a, b)
int avio_get_str(AVIOContext *pb, int maxlen, char *buf, int buflen)
Read a string from pb into buf.
Definition: aviobuf.c:879
void av_aes_ctr_set_full_iv(struct AVAESCTR *a, const uint8_t *iv)
Forcefully change the "full" 16-byte iv, including the counter.
Definition: aes_ctr.c:48
int avio_feof(AVIOContext *s)
feof() equivalent for AVIOContext.
Definition: aviobuf.c:358
uint32_t codec_tag
Additional information about the codec (corresponds to the AVI FOURCC).
Definition: avcodec.h:3904
static int mov_read_alac(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:1697
int64_t duration_for_fps
Definition: isom.h:215
#define AV_CH_SIDE_LEFT
#define FFSWAP(type, a, b)
Definition: common.h:99
const char int length
Definition: avisynth_c.h:768
static int mov_read_stsz(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:2796
uint8_t * av_packet_new_side_data(AVPacket *pkt, enum AVPacketSideDataType type, int size)
Allocate new information of a packet.
Definition: avpacket.c:329
int stream_index
Definition: avcodec.h:1447
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
Definition: avformat.h:903
static double cr(void *priv, double x, double y)
Definition: vf_geq.c:113
#define MKTAG(a, b, c, d)
Definition: common.h:366
int moov_retry
Definition: isom.h:274
enum AVDiscard discard
Selects which packets can be discarded at will and do not need to be demuxed.
Definition: avformat.h:929
static void fix_timescale(MOVContext *c, MOVStreamContext *sc)
Definition: mov.c:4152
AVRational r_frame_rate
Real base framerate of the stream.
Definition: avformat.h:998
#define ID3v1_GENRE_MAX
Definition: id3v1.h:29
const char *const ff_id3v1_genre_str[ID3v1_GENRE_MAX+1]
ID3v1 genres.
Definition: id3v1.c:27
enum AVCodecID id
unsigned MaxFALL
Max average light level per frame (cd/m^2).
This structure stores compressed data.
Definition: avcodec.h:1422
static int mov_read_sbgp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:3043
size_t auxiliary_info_sample_count
Definition: isom.h:121
mode
Use these values in ebur128_init (or&#39;ed).
Definition: ebur128.h:83
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: avcodec.h:1438
int found_hdlr_mdta
&#39;hdlr&#39; atom with type &#39;mdta&#39; has been found
Definition: isom.h:250
int has_sidx
Definition: isom.h:234
AVPacket attached_pic
For streams with AV_DISPOSITION_ATTACHED_PIC disposition, this packet will contain the attached pictu...
Definition: avformat.h:956
uint8_t * system_id
A unique identifier for the key system this is for, can be NULL if it is not known.
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
Definition: isom.h:73
static uint32_t yuv_to_rgba(uint32_t ycbcr)
Definition: mov.c:2236
#define AV_WL32(p, v)
Definition: intreadwrite.h:426
#define AV_TIMECODE_STR_SIZE
Definition: timecode.h:33
#define MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC
Definition: isom.h:321
void * av_mallocz_array(size_t nmemb, size_t size)
Allocate a memory block for an array with av_mallocz().
Definition: mem.c:191
This side data should be associated with an audio stream and corresponds to enum AVAudioServiceType.
Definition: avcodec.h:1232
static int mov_read_saio(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:6183