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mov.c
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1 /*
2  * MOV demuxer
3  * Copyright (c) 2001 Fabrice Bellard
4  * Copyright (c) 2009 Baptiste Coudurier <baptiste dot coudurier at gmail dot com>
5  *
6  * first version by Francois Revol <revol@free.fr>
7  * seek function by Gael Chardon <gael.dev@4now.net>
8  *
9  * This file is part of FFmpeg.
10  *
11  * FFmpeg is free software; you can redistribute it and/or
12  * modify it under the terms of the GNU Lesser General Public
13  * License as published by the Free Software Foundation; either
14  * version 2.1 of the License, or (at your option) any later version.
15  *
16  * FFmpeg is distributed in the hope that it will be useful,
17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19  * Lesser General Public License for more details.
20  *
21  * You should have received a copy of the GNU Lesser General Public
22  * License along with FFmpeg; if not, write to the Free Software
23  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24  */
25 
26 #include <inttypes.h>
27 #include <limits.h>
28 #include <stdint.h>
29 
30 #include "libavutil/attributes.h"
32 #include "libavutil/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;
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  m = (a + b) >> 1;
1290  frag_time = get_frag_time(frag_index, m, id);
1291  if (frag_time != AV_NOPTS_VALUE) {
1292  if (frag_time >= timestamp)
1293  b = m;
1294  if (frag_time <= timestamp)
1295  a = m;
1296  }
1297  }
1298  return a;
1299 }
1300 
1301 static int update_frag_index(MOVContext *c, int64_t offset)
1302 {
1303  int index, i;
1304  MOVFragmentIndexItem * item;
1305  MOVFragmentStreamInfo * frag_stream_info;
1306 
1307  // If moof_offset already exists in frag_index, return index to it
1308  index = search_frag_moof_offset(&c->frag_index, offset);
1309  if (index < c->frag_index.nb_items &&
1310  c->frag_index.item[index].moof_offset == offset)
1311  return index;
1312 
1313  // offset is not yet in frag index.
1314  // Insert new item at index (sorted by moof offset)
1315  item = av_fast_realloc(c->frag_index.item,
1317  (c->frag_index.nb_items + 1) *
1318  sizeof(*c->frag_index.item));
1319  if(!item)
1320  return -1;
1321  c->frag_index.item = item;
1322 
1323  frag_stream_info = av_realloc_array(NULL, c->fc->nb_streams,
1324  sizeof(*item->stream_info));
1325  if (!frag_stream_info)
1326  return -1;
1327 
1328  for (i = 0; i < c->fc->nb_streams; i++) {
1329  frag_stream_info[i].id = c->fc->streams[i]->id;
1330  frag_stream_info[i].sidx_pts = AV_NOPTS_VALUE;
1331  frag_stream_info[i].tfdt_dts = AV_NOPTS_VALUE;
1332  frag_stream_info[i].first_tfra_pts = AV_NOPTS_VALUE;
1333  frag_stream_info[i].index_entry = -1;
1334  frag_stream_info[i].encryption_index = NULL;
1335  }
1336 
1337  if (index < c->frag_index.nb_items)
1338  memmove(c->frag_index.item + index + 1, c->frag_index.item + index,
1339  (c->frag_index.nb_items - index) * sizeof(*c->frag_index.item));
1340 
1341  item = &c->frag_index.item[index];
1342  item->headers_read = 0;
1343  item->current = 0;
1344  item->nb_stream_info = c->fc->nb_streams;
1345  item->moof_offset = offset;
1346  item->stream_info = frag_stream_info;
1347  c->frag_index.nb_items++;
1348 
1349  return index;
1350 }
1351 
1352 static void fix_frag_index_entries(MOVFragmentIndex *frag_index, int index,
1353  int id, int entries)
1354 {
1355  int i;
1356  MOVFragmentStreamInfo * frag_stream_info;
1357 
1358  if (index < 0)
1359  return;
1360  for (i = index; i < frag_index->nb_items; i++) {
1361  frag_stream_info = get_frag_stream_info(frag_index, i, id);
1362  if (frag_stream_info && frag_stream_info->index_entry >= 0)
1363  frag_stream_info->index_entry += entries;
1364  }
1365 }
1366 
1368 {
1369  if (!c->has_looked_for_mfra && c->use_mfra_for > 0) {
1370  c->has_looked_for_mfra = 1;
1371  if (pb->seekable & AVIO_SEEKABLE_NORMAL) {
1372  int ret;
1373  av_log(c->fc, AV_LOG_VERBOSE, "stream has moof boxes, will look "
1374  "for a mfra\n");
1375  if ((ret = mov_read_mfra(c, pb)) < 0) {
1376  av_log(c->fc, AV_LOG_VERBOSE, "found a moof box but failed to "
1377  "read the mfra (may be a live ismv)\n");
1378  }
1379  } else {
1380  av_log(c->fc, AV_LOG_VERBOSE, "found a moof box but stream is not "
1381  "seekable, can not look for mfra\n");
1382  }
1383  }
1385  av_log(c->fc, AV_LOG_TRACE, "moof offset %"PRIx64"\n", c->fragment.moof_offset);
1387  return mov_read_default(c, pb, atom);
1388 }
1389 
1390 static void mov_metadata_creation_time(AVDictionary **metadata, int64_t time)
1391 {
1392  if (time) {
1393  if(time >= 2082844800)
1394  time -= 2082844800; /* seconds between 1904-01-01 and Epoch */
1395 
1396  if ((int64_t)(time * 1000000ULL) / 1000000 != time) {
1397  av_log(NULL, AV_LOG_DEBUG, "creation_time is not representable\n");
1398  return;
1399  }
1400 
1401  avpriv_dict_set_timestamp(metadata, "creation_time", time * 1000000);
1402  }
1403 }
1404 
1406 {
1407  AVStream *st;
1408  MOVStreamContext *sc;
1409  int version;
1410  char language[4] = {0};
1411  unsigned lang;
1412  int64_t creation_time;
1413 
1414  if (c->fc->nb_streams < 1)
1415  return 0;
1416  st = c->fc->streams[c->fc->nb_streams-1];
1417  sc = st->priv_data;
1418 
1419  if (sc->time_scale) {
1420  av_log(c->fc, AV_LOG_ERROR, "Multiple mdhd?\n");
1421  return AVERROR_INVALIDDATA;
1422  }
1423 
1424  version = avio_r8(pb);
1425  if (version > 1) {
1426  avpriv_request_sample(c->fc, "Version %d", version);
1427  return AVERROR_PATCHWELCOME;
1428  }
1429  avio_rb24(pb); /* flags */
1430  if (version == 1) {
1431  creation_time = avio_rb64(pb);
1432  avio_rb64(pb);
1433  } else {
1434  creation_time = avio_rb32(pb);
1435  avio_rb32(pb); /* modification time */
1436  }
1437  mov_metadata_creation_time(&st->metadata, creation_time);
1438 
1439  sc->time_scale = avio_rb32(pb);
1440  if (sc->time_scale <= 0) {
1441  av_log(c->fc, AV_LOG_ERROR, "Invalid mdhd time scale %d, defaulting to 1\n", sc->time_scale);
1442  sc->time_scale = 1;
1443  }
1444  st->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
1445 
1446  lang = avio_rb16(pb); /* language */
1447  if (ff_mov_lang_to_iso639(lang, language))
1448  av_dict_set(&st->metadata, "language", language, 0);
1449  avio_rb16(pb); /* quality */
1450 
1451  return 0;
1452 }
1453 
1455 {
1456  int i;
1457  int64_t creation_time;
1458  int version = avio_r8(pb); /* version */
1459  avio_rb24(pb); /* flags */
1460 
1461  if (version == 1) {
1462  creation_time = avio_rb64(pb);
1463  avio_rb64(pb);
1464  } else {
1465  creation_time = avio_rb32(pb);
1466  avio_rb32(pb); /* modification time */
1467  }
1468  mov_metadata_creation_time(&c->fc->metadata, creation_time);
1469  c->time_scale = avio_rb32(pb); /* time scale */
1470  if (c->time_scale <= 0) {
1471  av_log(c->fc, AV_LOG_ERROR, "Invalid mvhd time scale %d, defaulting to 1\n", c->time_scale);
1472  c->time_scale = 1;
1473  }
1474  av_log(c->fc, AV_LOG_TRACE, "time scale = %i\n", c->time_scale);
1475 
1476  c->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
1477  // set the AVCodecContext duration because the duration of individual tracks
1478  // may be inaccurate
1479  if (c->time_scale > 0 && !c->trex_data)
1481  avio_rb32(pb); /* preferred scale */
1482 
1483  avio_rb16(pb); /* preferred volume */
1484 
1485  avio_skip(pb, 10); /* reserved */
1486 
1487  /* movie display matrix, store it in main context and use it later on */
1488  for (i = 0; i < 3; i++) {
1489  c->movie_display_matrix[i][0] = avio_rb32(pb); // 16.16 fixed point
1490  c->movie_display_matrix[i][1] = avio_rb32(pb); // 16.16 fixed point
1491  c->movie_display_matrix[i][2] = avio_rb32(pb); // 2.30 fixed point
1492  }
1493 
1494  avio_rb32(pb); /* preview time */
1495  avio_rb32(pb); /* preview duration */
1496  avio_rb32(pb); /* poster time */
1497  avio_rb32(pb); /* selection time */
1498  avio_rb32(pb); /* selection duration */
1499  avio_rb32(pb); /* current time */
1500  avio_rb32(pb); /* next track ID */
1501 
1502  return 0;
1503 }
1504 
1506 {
1507  AVStream *st;
1508  int little_endian;
1509 
1510  if (c->fc->nb_streams < 1)
1511  return 0;
1512  st = c->fc->streams[c->fc->nb_streams-1];
1513 
1514  little_endian = avio_rb16(pb) & 0xFF;
1515  av_log(c->fc, AV_LOG_TRACE, "enda %d\n", little_endian);
1516  if (little_endian == 1) {
1517  switch (st->codecpar->codec_id) {
1518  case AV_CODEC_ID_PCM_S24BE:
1520  break;
1521  case AV_CODEC_ID_PCM_S32BE:
1523  break;
1524  case AV_CODEC_ID_PCM_F32BE:
1526  break;
1527  case AV_CODEC_ID_PCM_F64BE:
1529  break;
1530  default:
1531  break;
1532  }
1533  }
1534  return 0;
1535 }
1536 
1538 {
1539  AVStream *st;
1540  char color_parameter_type[5] = { 0 };
1541  uint16_t color_primaries, color_trc, color_matrix;
1542  int ret;
1543 
1544  if (c->fc->nb_streams < 1)
1545  return 0;
1546  st = c->fc->streams[c->fc->nb_streams - 1];
1547 
1548  ret = ffio_read_size(pb, color_parameter_type, 4);
1549  if (ret < 0)
1550  return ret;
1551  if (strncmp(color_parameter_type, "nclx", 4) &&
1552  strncmp(color_parameter_type, "nclc", 4)) {
1553  av_log(c->fc, AV_LOG_WARNING, "unsupported color_parameter_type %s\n",
1554  color_parameter_type);
1555  return 0;
1556  }
1557 
1558  color_primaries = avio_rb16(pb);
1559  color_trc = avio_rb16(pb);
1560  color_matrix = avio_rb16(pb);
1561 
1562  av_log(c->fc, AV_LOG_TRACE,
1563  "%s: pri %d trc %d matrix %d",
1564  color_parameter_type, color_primaries, color_trc, color_matrix);
1565 
1566  if (!strncmp(color_parameter_type, "nclx", 4)) {
1567  uint8_t color_range = avio_r8(pb) >> 7;
1568  av_log(c->fc, AV_LOG_TRACE, " full %"PRIu8"", color_range);
1569  if (color_range)
1571  else
1573  }
1574 
1575  if (!av_color_primaries_name(color_primaries))
1576  color_primaries = AVCOL_PRI_UNSPECIFIED;
1577  if (!av_color_transfer_name(color_trc))
1578  color_trc = AVCOL_TRC_UNSPECIFIED;
1579  if (!av_color_space_name(color_matrix))
1580  color_matrix = AVCOL_SPC_UNSPECIFIED;
1581 
1583  st->codecpar->color_trc = color_trc;
1584  st->codecpar->color_space = color_matrix;
1585  av_log(c->fc, AV_LOG_TRACE, "\n");
1586 
1587  return 0;
1588 }
1589 
1591 {
1592  AVStream *st;
1593  unsigned mov_field_order;
1594  enum AVFieldOrder decoded_field_order = AV_FIELD_UNKNOWN;
1595 
1596  if (c->fc->nb_streams < 1) // will happen with jp2 files
1597  return 0;
1598  st = c->fc->streams[c->fc->nb_streams-1];
1599  if (atom.size < 2)
1600  return AVERROR_INVALIDDATA;
1601  mov_field_order = avio_rb16(pb);
1602  if ((mov_field_order & 0xFF00) == 0x0100)
1603  decoded_field_order = AV_FIELD_PROGRESSIVE;
1604  else if ((mov_field_order & 0xFF00) == 0x0200) {
1605  switch (mov_field_order & 0xFF) {
1606  case 0x01: decoded_field_order = AV_FIELD_TT;
1607  break;
1608  case 0x06: decoded_field_order = AV_FIELD_BB;
1609  break;
1610  case 0x09: decoded_field_order = AV_FIELD_TB;
1611  break;
1612  case 0x0E: decoded_field_order = AV_FIELD_BT;
1613  break;
1614  }
1615  }
1616  if (decoded_field_order == AV_FIELD_UNKNOWN && mov_field_order) {
1617  av_log(NULL, AV_LOG_ERROR, "Unknown MOV field order 0x%04x\n", mov_field_order);
1618  }
1619  st->codecpar->field_order = decoded_field_order;
1620 
1621  return 0;
1622 }
1623 
1625 {
1626  int err = 0;
1627  uint64_t size = (uint64_t)par->extradata_size + atom.size + 8 + AV_INPUT_BUFFER_PADDING_SIZE;
1628  if (size > INT_MAX || (uint64_t)atom.size > INT_MAX)
1629  return AVERROR_INVALIDDATA;
1630  if ((err = av_reallocp(&par->extradata, size)) < 0) {
1631  par->extradata_size = 0;
1632  return err;
1633  }
1635  return 0;
1636 }
1637 
1638 /* Read a whole atom into the extradata return the size of the atom read, possibly truncated if != atom.size */
1640  AVCodecParameters *par, uint8_t *buf)
1641 {
1642  int64_t result = atom.size;
1643  int err;
1644 
1645  AV_WB32(buf , atom.size + 8);
1646  AV_WL32(buf + 4, atom.type);
1647  err = ffio_read_size(pb, buf + 8, atom.size);
1648  if (err < 0) {
1649  par->extradata_size -= atom.size;
1650  return err;
1651  } else if (err < atom.size) {
1652  av_log(c->fc, AV_LOG_WARNING, "truncated extradata\n");
1653  par->extradata_size -= atom.size - err;
1654  result = err;
1655  }
1656  memset(buf + 8 + err, 0, AV_INPUT_BUFFER_PADDING_SIZE);
1657  return result;
1658 }
1659 
1660 /* FIXME modify QDM2/SVQ3/H.264 decoders to take full atom as extradata */
1662  enum AVCodecID codec_id)
1663 {
1664  AVStream *st;
1665  uint64_t original_size;
1666  int err;
1667 
1668  if (c->fc->nb_streams < 1) // will happen with jp2 files
1669  return 0;
1670  st = c->fc->streams[c->fc->nb_streams-1];
1671 
1672  if (st->codecpar->codec_id != codec_id)
1673  return 0; /* unexpected codec_id - don't mess with extradata */
1674 
1675  original_size = st->codecpar->extradata_size;
1676  err = mov_realloc_extradata(st->codecpar, atom);
1677  if (err)
1678  return err;
1679 
1680  err = mov_read_atom_into_extradata(c, pb, atom, st->codecpar, st->codecpar->extradata + original_size);
1681  if (err < 0)
1682  return err;
1683  return 0; // Note: this is the original behavior to ignore truncation.
1684 }
1685 
1686 /* wrapper functions for reading ALAC/AVS/MJPEG/MJPEG2000 extradata atoms only for those codecs */
1688 {
1689  return mov_read_extradata(c, pb, atom, AV_CODEC_ID_ALAC);
1690 }
1691 
1693 {
1694  return mov_read_extradata(c, pb, atom, AV_CODEC_ID_AVS);
1695 }
1696 
1698 {
1699  return mov_read_extradata(c, pb, atom, AV_CODEC_ID_JPEG2000);
1700 }
1701 
1703 {
1704  return mov_read_extradata(c, pb, atom, AV_CODEC_ID_R10K);
1705 }
1706 
1708 {
1709  int ret = mov_read_extradata(c, pb, atom, AV_CODEC_ID_AVUI);
1710  if(ret == 0)
1711  ret = mov_read_extradata(c, pb, atom, AV_CODEC_ID_DNXHD);
1712  return ret;
1713 }
1714 
1716 {
1717  int ret = mov_read_extradata(c, pb, atom, AV_CODEC_ID_TARGA_Y216);
1718 
1719  if (!ret && c->fc->nb_streams >= 1) {
1720  AVCodecParameters *par = c->fc->streams[c->fc->nb_streams-1]->codecpar;
1721  if (par->extradata_size >= 40) {
1722  par->height = AV_RB16(&par->extradata[36]);
1723  par->width = AV_RB16(&par->extradata[38]);
1724  }
1725  }
1726  return ret;
1727 }
1728 
1730 {
1731  if (c->fc->nb_streams >= 1) {
1732  AVCodecParameters *par = c->fc->streams[c->fc->nb_streams-1]->codecpar;
1733  if (par->codec_tag == MKTAG('A', 'V', 'i', 'n') &&
1734  par->codec_id == AV_CODEC_ID_H264 &&
1735  atom.size > 11) {
1736  int cid;
1737  avio_skip(pb, 10);
1738  cid = avio_rb16(pb);
1739  /* For AVID AVCI50, force width of 1440 to be able to select the correct SPS and PPS */
1740  if (cid == 0xd4d || cid == 0xd4e)
1741  par->width = 1440;
1742  return 0;
1743  } else if ((par->codec_tag == MKTAG('A', 'V', 'd', '1') ||
1744  par->codec_tag == MKTAG('A', 'V', 'j', '2') ||
1745  par->codec_tag == MKTAG('A', 'V', 'd', 'n')) &&
1746  atom.size >= 24) {
1747  int num, den;
1748  avio_skip(pb, 12);
1749  num = avio_rb32(pb);
1750  den = avio_rb32(pb);
1751  if (num <= 0 || den <= 0)
1752  return 0;
1753  switch (avio_rb32(pb)) {
1754  case 2:
1755  if (den >= INT_MAX / 2)
1756  return 0;
1757  den *= 2;
1758  case 1:
1759  c->fc->streams[c->fc->nb_streams-1]->display_aspect_ratio.num = num;
1760  c->fc->streams[c->fc->nb_streams-1]->display_aspect_ratio.den = den;
1761  default:
1762  return 0;
1763  }
1764  }
1765  }
1766 
1767  return mov_read_avid(c, pb, atom);
1768 }
1769 
1771 {
1772  int ret = 0;
1773  int length = 0;
1774  uint64_t original_size;
1775  if (c->fc->nb_streams >= 1) {
1776  AVCodecParameters *par = c->fc->streams[c->fc->nb_streams-1]->codecpar;
1777  if (par->codec_id == AV_CODEC_ID_H264)
1778  return 0;
1779  if (atom.size == 16) {
1780  original_size = par->extradata_size;
1781  ret = mov_realloc_extradata(par, atom);
1782  if (!ret) {
1783  length = mov_read_atom_into_extradata(c, pb, atom, par, par->extradata + original_size);
1784  if (length == atom.size) {
1785  const uint8_t range_value = par->extradata[original_size + 19];
1786  switch (range_value) {
1787  case 1:
1789  break;
1790  case 2:
1792  break;
1793  default:
1794  av_log(c, AV_LOG_WARNING, "ignored unknown aclr value (%d)\n", range_value);
1795  break;
1796  }
1797  ff_dlog(c, "color_range: %d\n", par->color_range);
1798  } else {
1799  /* For some reason the whole atom was not added to the extradata */
1800  av_log(c, AV_LOG_ERROR, "aclr not decoded - incomplete atom\n");
1801  }
1802  } else {
1803  av_log(c, AV_LOG_ERROR, "aclr not decoded - unable to add atom to extradata\n");
1804  }
1805  } else {
1806  av_log(c, AV_LOG_WARNING, "aclr not decoded - unexpected size %"PRId64"\n", atom.size);
1807  }
1808  }
1809 
1810  return ret;
1811 }
1812 
1814 {
1815  return mov_read_extradata(c, pb, atom, AV_CODEC_ID_SVQ3);
1816 }
1817 
1819 {
1820  AVStream *st;
1821  int ret;
1822 
1823  if (c->fc->nb_streams < 1)
1824  return 0;
1825  st = c->fc->streams[c->fc->nb_streams-1];
1826 
1827  if ((uint64_t)atom.size > (1<<30))
1828  return AVERROR_INVALIDDATA;
1829 
1830  if (st->codecpar->codec_id == AV_CODEC_ID_QDM2 ||
1833  // pass all frma atom to codec, needed at least for QDMC and QDM2
1834  av_freep(&st->codecpar->extradata);
1835  ret = ff_get_extradata(c->fc, st->codecpar, pb, atom.size);
1836  if (ret < 0)
1837  return ret;
1838  } else if (atom.size > 8) { /* to read frma, esds atoms */
1839  if (st->codecpar->codec_id == AV_CODEC_ID_ALAC && atom.size >= 24) {
1840  uint64_t buffer;
1841  ret = ffio_ensure_seekback(pb, 8);
1842  if (ret < 0)
1843  return ret;
1844  buffer = avio_rb64(pb);
1845  atom.size -= 8;
1846  if ( (buffer & 0xFFFFFFFF) == MKBETAG('f','r','m','a')
1847  && buffer >> 32 <= atom.size
1848  && buffer >> 32 >= 8) {
1849  avio_skip(pb, -8);
1850  atom.size += 8;
1851  } else if (!st->codecpar->extradata_size) {
1852 #define ALAC_EXTRADATA_SIZE 36
1854  if (!st->codecpar->extradata)
1855  return AVERROR(ENOMEM);
1858  AV_WB32(st->codecpar->extradata + 4, MKTAG('a','l','a','c'));
1859  AV_WB64(st->codecpar->extradata + 12, buffer);
1860  avio_read(pb, st->codecpar->extradata + 20, 16);
1861  avio_skip(pb, atom.size - 24);
1862  return 0;
1863  }
1864  }
1865  if ((ret = mov_read_default(c, pb, atom)) < 0)
1866  return ret;
1867  } else
1868  avio_skip(pb, atom.size);
1869  return 0;
1870 }
1871 
1872 /**
1873  * This function reads atom content and puts data in extradata without tag
1874  * nor size unlike mov_read_extradata.
1875  */
1877 {
1878  AVStream *st;
1879  int ret;
1880 
1881  if (c->fc->nb_streams < 1)
1882  return 0;
1883  st = c->fc->streams[c->fc->nb_streams-1];
1884 
1885  if ((uint64_t)atom.size > (1<<30))
1886  return AVERROR_INVALIDDATA;
1887 
1888  if (atom.size >= 10) {
1889  // Broken files created by legacy versions of libavformat will
1890  // wrap a whole fiel atom inside of a glbl atom.
1891  unsigned size = avio_rb32(pb);
1892  unsigned type = avio_rl32(pb);
1893  avio_seek(pb, -8, SEEK_CUR);
1894  if (type == MKTAG('f','i','e','l') && size == atom.size)
1895  return mov_read_default(c, pb, atom);
1896  }
1897  if (st->codecpar->extradata_size > 1 && st->codecpar->extradata) {
1898  av_log(c, AV_LOG_WARNING, "ignoring multiple glbl\n");
1899  return 0;
1900  }
1901  av_freep(&st->codecpar->extradata);
1902  ret = ff_get_extradata(c->fc, st->codecpar, pb, atom.size);
1903  if (ret < 0)
1904  return ret;
1905  if (atom.type == MKTAG('h','v','c','C') && st->codecpar->codec_tag == MKTAG('d','v','h','1'))
1907 
1908  return 0;
1909 }
1910 
1912 {
1913  AVStream *st;
1914  uint8_t profile_level;
1915  int ret;
1916 
1917  if (c->fc->nb_streams < 1)
1918  return 0;
1919  st = c->fc->streams[c->fc->nb_streams-1];
1920 
1921  if (atom.size >= (1<<28) || atom.size < 7)
1922  return AVERROR_INVALIDDATA;
1923 
1924  profile_level = avio_r8(pb);
1925  if ((profile_level & 0xf0) != 0xc0)
1926  return 0;
1927 
1928  avio_seek(pb, 6, SEEK_CUR);
1929  av_freep(&st->codecpar->extradata);
1930  ret = ff_get_extradata(c->fc, st->codecpar, pb, atom.size - 7);
1931  if (ret < 0)
1932  return ret;
1933 
1934  return 0;
1935 }
1936 
1937 /**
1938  * An strf atom is a BITMAPINFOHEADER struct. This struct is 40 bytes itself,
1939  * but can have extradata appended at the end after the 40 bytes belonging
1940  * to the struct.
1941  */
1943 {
1944  AVStream *st;
1945  int ret;
1946 
1947  if (c->fc->nb_streams < 1)
1948  return 0;
1949  if (atom.size <= 40)
1950  return 0;
1951  st = c->fc->streams[c->fc->nb_streams-1];
1952 
1953  if ((uint64_t)atom.size > (1<<30))
1954  return AVERROR_INVALIDDATA;
1955 
1956  avio_skip(pb, 40);
1957  av_freep(&st->codecpar->extradata);
1958  ret = ff_get_extradata(c->fc, st->codecpar, pb, atom.size - 40);
1959  if (ret < 0)
1960  return ret;
1961 
1962  return 0;
1963 }
1964 
1966 {
1967  AVStream *st;
1968  MOVStreamContext *sc;
1969  unsigned int i, entries;
1970 
1971  if (c->fc->nb_streams < 1)
1972  return 0;
1973  st = c->fc->streams[c->fc->nb_streams-1];
1974  sc = st->priv_data;
1975 
1976  avio_r8(pb); /* version */
1977  avio_rb24(pb); /* flags */
1978 
1979  entries = avio_rb32(pb);
1980 
1981  if (!entries)
1982  return 0;
1983 
1984  if (sc->chunk_offsets)
1985  av_log(c->fc, AV_LOG_WARNING, "Duplicated STCO atom\n");
1986  av_free(sc->chunk_offsets);
1987  sc->chunk_count = 0;
1988  sc->chunk_offsets = av_malloc_array(entries, sizeof(*sc->chunk_offsets));
1989  if (!sc->chunk_offsets)
1990  return AVERROR(ENOMEM);
1991  sc->chunk_count = entries;
1992 
1993  if (atom.type == MKTAG('s','t','c','o'))
1994  for (i = 0; i < entries && !pb->eof_reached; i++)
1995  sc->chunk_offsets[i] = avio_rb32(pb);
1996  else if (atom.type == MKTAG('c','o','6','4'))
1997  for (i = 0; i < entries && !pb->eof_reached; i++)
1998  sc->chunk_offsets[i] = avio_rb64(pb);
1999  else
2000  return AVERROR_INVALIDDATA;
2001 
2002  sc->chunk_count = i;
2003 
2004  if (pb->eof_reached) {
2005  av_log(c->fc, AV_LOG_WARNING, "reached eof, corrupted STCO atom\n");
2006  return AVERROR_EOF;
2007  }
2008 
2009  return 0;
2010 }
2011 
2012 static int mov_codec_id(AVStream *st, uint32_t format)
2013 {
2014  int id = ff_codec_get_id(ff_codec_movaudio_tags, format);
2015 
2016  if (id <= 0 &&
2017  ((format & 0xFFFF) == 'm' + ('s' << 8) ||
2018  (format & 0xFFFF) == 'T' + ('S' << 8)))
2019  id = ff_codec_get_id(ff_codec_wav_tags, av_bswap32(format) & 0xFFFF);
2020 
2021  if (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO && id > 0) {
2023  } else if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO &&
2024  /* skip old ASF MPEG-4 tag */
2025  format && format != MKTAG('m','p','4','s')) {
2027  if (id <= 0)
2028  id = ff_codec_get_id(ff_codec_bmp_tags, format);
2029  if (id > 0)
2031  else if (st->codecpar->codec_type == AVMEDIA_TYPE_DATA ||
2033  st->codecpar->codec_id == AV_CODEC_ID_NONE)) {
2035  if (id > 0)
2037  else
2038  id = ff_codec_get_id(ff_codec_movdata_tags, format);
2039  }
2040  }
2041 
2042  st->codecpar->codec_tag = format;
2043 
2044  return id;
2045 }
2046 
2048  AVStream *st, MOVStreamContext *sc)
2049 {
2050  uint8_t codec_name[32] = { 0 };
2051  int64_t stsd_start;
2052  unsigned int len;
2053 
2054  /* The first 16 bytes of the video sample description are already
2055  * read in ff_mov_read_stsd_entries() */
2056  stsd_start = avio_tell(pb) - 16;
2057 
2058  avio_rb16(pb); /* version */
2059  avio_rb16(pb); /* revision level */
2060  avio_rb32(pb); /* vendor */
2061  avio_rb32(pb); /* temporal quality */
2062  avio_rb32(pb); /* spatial quality */
2063 
2064  st->codecpar->width = avio_rb16(pb); /* width */
2065  st->codecpar->height = avio_rb16(pb); /* height */
2066 
2067  avio_rb32(pb); /* horiz resolution */
2068  avio_rb32(pb); /* vert resolution */
2069  avio_rb32(pb); /* data size, always 0 */
2070  avio_rb16(pb); /* frames per samples */
2071 
2072  len = avio_r8(pb); /* codec name, pascal string */
2073  if (len > 31)
2074  len = 31;
2075  mov_read_mac_string(c, pb, len, codec_name, sizeof(codec_name));
2076  if (len < 31)
2077  avio_skip(pb, 31 - len);
2078 
2079  if (codec_name[0])
2080  av_dict_set(&st->metadata, "encoder", codec_name, 0);
2081 
2082  /* codec_tag YV12 triggers an UV swap in rawdec.c */
2083  if (!strncmp(codec_name, "Planar Y'CbCr 8-bit 4:2:0", 25)) {
2084  st->codecpar->codec_tag = MKTAG('I', '4', '2', '0');
2085  st->codecpar->width &= ~1;
2086  st->codecpar->height &= ~1;
2087  }
2088  /* Flash Media Server uses tag H.263 with Sorenson Spark */
2089  if (st->codecpar->codec_tag == MKTAG('H','2','6','3') &&
2090  !strncmp(codec_name, "Sorenson H263", 13))
2092 
2093  st->codecpar->bits_per_coded_sample = avio_rb16(pb); /* depth */
2094 
2095  avio_seek(pb, stsd_start, SEEK_SET);
2096 
2097  if (ff_get_qtpalette(st->codecpar->codec_id, pb, sc->palette)) {
2098  st->codecpar->bits_per_coded_sample &= 0x1F;
2099  sc->has_palette = 1;
2100  }
2101 }
2102 
2104  AVStream *st, MOVStreamContext *sc)
2105 {
2106  int bits_per_sample, flags;
2107  uint16_t version = avio_rb16(pb);
2108  AVDictionaryEntry *compatible_brands = av_dict_get(c->fc->metadata, "compatible_brands", NULL, AV_DICT_MATCH_CASE);
2109 
2110  avio_rb16(pb); /* revision level */
2111  avio_rb32(pb); /* vendor */
2112 
2113  st->codecpar->channels = avio_rb16(pb); /* channel count */
2114  st->codecpar->bits_per_coded_sample = avio_rb16(pb); /* sample size */
2115  av_log(c->fc, AV_LOG_TRACE, "audio channels %d\n", st->codecpar->channels);
2116 
2117  sc->audio_cid = avio_rb16(pb);
2118  avio_rb16(pb); /* packet size = 0 */
2119 
2120  st->codecpar->sample_rate = ((avio_rb32(pb) >> 16));
2121 
2122  // Read QT version 1 fields. In version 0 these do not exist.
2123  av_log(c->fc, AV_LOG_TRACE, "version =%d, isom =%d\n", version, c->isom);
2124  if (!c->isom ||
2125  (compatible_brands && strstr(compatible_brands->value, "qt ")) ||
2126  (sc->stsd_version == 0 && version > 0)) {
2127  if (version == 1) {
2128  sc->samples_per_frame = avio_rb32(pb);
2129  avio_rb32(pb); /* bytes per packet */
2130  sc->bytes_per_frame = avio_rb32(pb);
2131  avio_rb32(pb); /* bytes per sample */
2132  } else if (version == 2) {
2133  avio_rb32(pb); /* sizeof struct only */
2135  st->codecpar->channels = avio_rb32(pb);
2136  avio_rb32(pb); /* always 0x7F000000 */
2138 
2139  flags = avio_rb32(pb); /* lpcm format specific flag */
2140  sc->bytes_per_frame = avio_rb32(pb);
2141  sc->samples_per_frame = avio_rb32(pb);
2142  if (st->codecpar->codec_tag == MKTAG('l','p','c','m'))
2143  st->codecpar->codec_id =
2145  flags);
2146  }
2147  if (version == 0 || (version == 1 && sc->audio_cid != -2)) {
2148  /* can't correctly handle variable sized packet as audio unit */
2149  switch (st->codecpar->codec_id) {
2150  case AV_CODEC_ID_MP2:
2151  case AV_CODEC_ID_MP3:
2153  break;
2154  }
2155  }
2156  }
2157 
2158  if (sc->format == 0) {
2159  if (st->codecpar->bits_per_coded_sample == 8)
2160  st->codecpar->codec_id = mov_codec_id(st, MKTAG('r','a','w',' '));
2161  else if (st->codecpar->bits_per_coded_sample == 16)
2162  st->codecpar->codec_id = mov_codec_id(st, MKTAG('t','w','o','s'));
2163  }
2164 
2165  switch (st->codecpar->codec_id) {
2166  case AV_CODEC_ID_PCM_S8:
2167  case AV_CODEC_ID_PCM_U8:
2168  if (st->codecpar->bits_per_coded_sample == 16)
2170  break;
2171  case AV_CODEC_ID_PCM_S16LE:
2172  case AV_CODEC_ID_PCM_S16BE:
2173  if (st->codecpar->bits_per_coded_sample == 8)
2175  else if (st->codecpar->bits_per_coded_sample == 24)
2176  st->codecpar->codec_id =
2179  else if (st->codecpar->bits_per_coded_sample == 32)
2180  st->codecpar->codec_id =
2183  break;
2184  /* set values for old format before stsd version 1 appeared */
2185  case AV_CODEC_ID_MACE3:
2186  sc->samples_per_frame = 6;
2187  sc->bytes_per_frame = 2 * st->codecpar->channels;
2188  break;
2189  case AV_CODEC_ID_MACE6:
2190  sc->samples_per_frame = 6;
2191  sc->bytes_per_frame = 1 * st->codecpar->channels;
2192  break;
2194  sc->samples_per_frame = 64;
2195  sc->bytes_per_frame = 34 * st->codecpar->channels;
2196  break;
2197  case AV_CODEC_ID_GSM:
2198  sc->samples_per_frame = 160;
2199  sc->bytes_per_frame = 33;
2200  break;
2201  default:
2202  break;
2203  }
2204 
2205  bits_per_sample = av_get_bits_per_sample(st->codecpar->codec_id);
2206  if (bits_per_sample) {
2207  st->codecpar->bits_per_coded_sample = bits_per_sample;
2208  sc->sample_size = (bits_per_sample >> 3) * st->codecpar->channels;
2209  }
2210 }
2211 
2213  AVStream *st, MOVStreamContext *sc,
2214  int64_t size)
2215 {
2216  // ttxt stsd contains display flags, justification, background
2217  // color, fonts, and default styles, so fake an atom to read it
2218  MOVAtom fake_atom = { .size = size };
2219  // mp4s contains a regular esds atom
2220  if (st->codecpar->codec_tag != AV_RL32("mp4s"))
2221  mov_read_glbl(c, pb, fake_atom);
2222  st->codecpar->width = sc->width;
2223  st->codecpar->height = sc->height;
2224 }
2225 
2226 static uint32_t yuv_to_rgba(uint32_t ycbcr)
2227 {
2228  uint8_t r, g, b;
2229  int y, cb, cr;
2230 
2231  y = (ycbcr >> 16) & 0xFF;
2232  cr = (ycbcr >> 8) & 0xFF;
2233  cb = ycbcr & 0xFF;
2234 
2235  b = av_clip_uint8((1164 * (y - 16) + 2018 * (cb - 128)) / 1000);
2236  g = av_clip_uint8((1164 * (y - 16) - 813 * (cr - 128) - 391 * (cb - 128)) / 1000);
2237  r = av_clip_uint8((1164 * (y - 16) + 1596 * (cr - 128) ) / 1000);
2238 
2239  return (r << 16) | (g << 8) | b;
2240 }
2241 
2243 {
2244  char buf[256] = {0};
2245  uint8_t *src = st->codecpar->extradata;
2246  int i;
2247 
2248  if (st->codecpar->extradata_size != 64)
2249  return 0;
2250 
2251  if (st->codecpar->width > 0 && st->codecpar->height > 0)
2252  snprintf(buf, sizeof(buf), "size: %dx%d\n",
2253  st->codecpar->width, st->codecpar->height);
2254  av_strlcat(buf, "palette: ", sizeof(buf));
2255 
2256  for (i = 0; i < 16; i++) {
2257  uint32_t yuv = AV_RB32(src + i * 4);
2258  uint32_t rgba = yuv_to_rgba(yuv);
2259 
2260  av_strlcatf(buf, sizeof(buf), "%06"PRIx32"%s", rgba, i != 15 ? ", " : "");
2261  }
2262 
2263  if (av_strlcat(buf, "\n", sizeof(buf)) >= sizeof(buf))
2264  return 0;
2265 
2266  av_freep(&st->codecpar->extradata);
2267  st->codecpar->extradata_size = 0;
2269  if (!st->codecpar->extradata)
2270  return AVERROR(ENOMEM);
2271  st->codecpar->extradata_size = strlen(buf);
2272  memcpy(st->codecpar->extradata, buf, st->codecpar->extradata_size);
2273 
2274  return 0;
2275 }
2276 
2278  AVStream *st, MOVStreamContext *sc,
2279  int64_t size)
2280 {
2281  int ret;
2282 
2283  if (st->codecpar->codec_tag == MKTAG('t','m','c','d')) {
2284  if ((int)size != size)
2285  return AVERROR(ENOMEM);
2286 
2287  ret = ff_get_extradata(c->fc, st->codecpar, pb, size);
2288  if (ret < 0)
2289  return ret;
2290  if (size > 16) {
2291  MOVStreamContext *tmcd_ctx = st->priv_data;
2292  int val;
2293  val = AV_RB32(st->codecpar->extradata + 4);
2294  tmcd_ctx->tmcd_flags = val;
2295  st->avg_frame_rate.num = st->codecpar->extradata[16]; /* number of frame */
2296  st->avg_frame_rate.den = 1;
2297 #if FF_API_LAVF_AVCTX
2299  st->codec->time_base = av_inv_q(st->avg_frame_rate);
2301 #endif
2302  /* adjust for per frame dur in counter mode */
2303  if (tmcd_ctx->tmcd_flags & 0x0008) {
2304  int timescale = AV_RB32(st->codecpar->extradata + 8);
2305  int framedur = AV_RB32(st->codecpar->extradata + 12);
2306  st->avg_frame_rate.num *= timescale;
2307  st->avg_frame_rate.den *= framedur;
2308 #if FF_API_LAVF_AVCTX
2310  st->codec->time_base.den *= timescale;
2311  st->codec->time_base.num *= framedur;
2313 #endif
2314  }
2315  if (size > 30) {
2316  uint32_t len = AV_RB32(st->codecpar->extradata + 18); /* name atom length */
2317  uint32_t format = AV_RB32(st->codecpar->extradata + 22);
2318  if (format == AV_RB32("name") && (int64_t)size >= (int64_t)len + 18) {
2319  uint16_t str_size = AV_RB16(st->codecpar->extradata + 26); /* string length */
2320  if (str_size > 0 && size >= (int)str_size + 26) {
2321  char *reel_name = av_malloc(str_size + 1);
2322  if (!reel_name)
2323  return AVERROR(ENOMEM);
2324  memcpy(reel_name, st->codecpar->extradata + 30, str_size);
2325  reel_name[str_size] = 0; /* Add null terminator */
2326  /* don't add reel_name if emtpy string */
2327  if (*reel_name == 0) {
2328  av_free(reel_name);
2329  } else {
2330  av_dict_set(&st->metadata, "reel_name", reel_name, AV_DICT_DONT_STRDUP_VAL);
2331  }
2332  }
2333  }
2334  }
2335  }
2336  } else {
2337  /* other codec type, just skip (rtp, mp4s ...) */
2338  avio_skip(pb, size);
2339  }
2340  return 0;
2341 }
2342 
2344  AVStream *st, MOVStreamContext *sc)
2345 {
2346  if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
2347  !st->codecpar->sample_rate && sc->time_scale > 1)
2348  st->codecpar->sample_rate = sc->time_scale;
2349 
2350  /* special codec parameters handling */
2351  switch (st->codecpar->codec_id) {
2352 #if CONFIG_DV_DEMUXER
2353  case AV_CODEC_ID_DVAUDIO:
2355  if (!c->dv_fctx) {
2356  av_log(c->fc, AV_LOG_ERROR, "dv demux context alloc error\n");
2357  return AVERROR(ENOMEM);
2358  }
2360  if (!c->dv_demux) {
2361  av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
2362  return AVERROR(ENOMEM);
2363  }
2364  sc->dv_audio_container = 1;
2366  break;
2367 #endif
2368  /* no ifdef since parameters are always those */
2369  case AV_CODEC_ID_QCELP:
2370  st->codecpar->channels = 1;
2371  // force sample rate for qcelp when not stored in mov
2372  if (st->codecpar->codec_tag != MKTAG('Q','c','l','p'))
2373  st->codecpar->sample_rate = 8000;
2374  // FIXME: Why is the following needed for some files?
2375  sc->samples_per_frame = 160;
2376  if (!sc->bytes_per_frame)
2377  sc->bytes_per_frame = 35;
2378  break;
2379  case AV_CODEC_ID_AMR_NB:
2380  st->codecpar->channels = 1;
2381  /* force sample rate for amr, stsd in 3gp does not store sample rate */
2382  st->codecpar->sample_rate = 8000;
2383  break;
2384  case AV_CODEC_ID_AMR_WB:
2385  st->codecpar->channels = 1;
2386  st->codecpar->sample_rate = 16000;
2387  break;
2388  case AV_CODEC_ID_MP2:
2389  case AV_CODEC_ID_MP3:
2390  /* force type after stsd for m1a hdlr */
2392  break;
2393  case AV_CODEC_ID_GSM:
2394  case AV_CODEC_ID_ADPCM_MS:
2396  case AV_CODEC_ID_ILBC:
2397  case AV_CODEC_ID_MACE3:
2398  case AV_CODEC_ID_MACE6:
2399  case AV_CODEC_ID_QDM2:
2401  break;
2402  case AV_CODEC_ID_ALAC:
2403  if (st->codecpar->extradata_size == 36) {
2404  st->codecpar->channels = AV_RB8 (st->codecpar->extradata + 21);
2405  st->codecpar->sample_rate = AV_RB32(st->codecpar->extradata + 32);
2406  }
2407  break;
2408  case AV_CODEC_ID_AC3:
2409  case AV_CODEC_ID_EAC3:
2411  case AV_CODEC_ID_VC1:
2412  case AV_CODEC_ID_VP8:
2413  case AV_CODEC_ID_VP9:
2415  break;
2416  default:
2417  break;
2418  }
2419  return 0;
2420 }
2421 
2423  int codec_tag, int format,
2424  int64_t size)
2425 {
2426  int video_codec_id = ff_codec_get_id(ff_codec_movvideo_tags, format);
2427 
2428  if (codec_tag &&
2429  (codec_tag != format &&
2430  // AVID 1:1 samples with differing data format and codec tag exist
2431  (codec_tag != AV_RL32("AV1x") || format != AV_RL32("AVup")) &&
2432  // prores is allowed to have differing data format and codec tag
2433  codec_tag != AV_RL32("apcn") && codec_tag != AV_RL32("apch") &&
2434  // so is dv (sigh)
2435  codec_tag != AV_RL32("dvpp") && codec_tag != AV_RL32("dvcp") &&
2436  (c->fc->video_codec_id ? video_codec_id != c->fc->video_codec_id
2437  : codec_tag != MKTAG('j','p','e','g')))) {
2438  /* Multiple fourcc, we skip JPEG. This is not correct, we should
2439  * export it as a separate AVStream but this needs a few changes
2440  * in the MOV demuxer, patch welcome. */
2441 
2442  av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n");
2443  avio_skip(pb, size);
2444  return 1;
2445  }
2446 
2447  return 0;
2448 }
2449 
2451 {
2452  AVStream *st;
2453  MOVStreamContext *sc;
2454  int pseudo_stream_id;
2455 
2456  av_assert0 (c->fc->nb_streams >= 1);
2457  st = c->fc->streams[c->fc->nb_streams-1];
2458  sc = st->priv_data;
2459 
2460  for (pseudo_stream_id = 0;
2461  pseudo_stream_id < entries && !pb->eof_reached;
2462  pseudo_stream_id++) {
2463  //Parsing Sample description table
2464  enum AVCodecID id;
2465  int ret, dref_id = 1;
2466  MOVAtom a = { AV_RL32("stsd") };
2467  int64_t start_pos = avio_tell(pb);
2468  int64_t size = avio_rb32(pb); /* size */
2469  uint32_t format = avio_rl32(pb); /* data format */
2470 
2471  if (size >= 16) {
2472  avio_rb32(pb); /* reserved */
2473  avio_rb16(pb); /* reserved */
2474  dref_id = avio_rb16(pb);
2475  } else if (size <= 7) {
2476  av_log(c->fc, AV_LOG_ERROR,
2477  "invalid size %"PRId64" in stsd\n", size);
2478  return AVERROR_INVALIDDATA;
2479  }
2480 
2481  if (mov_skip_multiple_stsd(c, pb, st->codecpar->codec_tag, format,
2482  size - (avio_tell(pb) - start_pos))) {
2483  sc->stsd_count++;
2484  continue;
2485  }
2486 
2487  sc->pseudo_stream_id = st->codecpar->codec_tag ? -1 : pseudo_stream_id;
2488  sc->dref_id= dref_id;
2489  sc->format = format;
2490 
2491  id = mov_codec_id(st, format);
2492 
2493  av_log(c->fc, AV_LOG_TRACE,
2494  "size=%"PRId64" 4CC=%s codec_type=%d\n", size,
2495  av_fourcc2str(format), st->codecpar->codec_type);
2496 
2497  st->codecpar->codec_id = id;
2499  mov_parse_stsd_video(c, pb, st, sc);
2500  } else if (st->codecpar->codec_type==AVMEDIA_TYPE_AUDIO) {
2501  mov_parse_stsd_audio(c, pb, st, sc);
2502  if (st->codecpar->sample_rate < 0) {
2503  av_log(c->fc, AV_LOG_ERROR, "Invalid sample rate %d\n", st->codecpar->sample_rate);
2504  return AVERROR_INVALIDDATA;
2505  }
2506  } else if (st->codecpar->codec_type==AVMEDIA_TYPE_SUBTITLE){
2507  mov_parse_stsd_subtitle(c, pb, st, sc,
2508  size - (avio_tell(pb) - start_pos));
2509  } else {
2510  ret = mov_parse_stsd_data(c, pb, st, sc,
2511  size - (avio_tell(pb) - start_pos));
2512  if (ret < 0)
2513  return ret;
2514  }
2515  /* this will read extra atoms at the end (wave, alac, damr, avcC, hvcC, SMI ...) */
2516  a.size = size - (avio_tell(pb) - start_pos);
2517  if (a.size > 8) {
2518  if ((ret = mov_read_default(c, pb, a)) < 0)
2519  return ret;
2520  } else if (a.size > 0)
2521  avio_skip(pb, a.size);
2522 
2523  if (sc->extradata && st->codecpar->extradata) {
2524  int extra_size = st->codecpar->extradata_size;
2525 
2526  /* Move the current stream extradata to the stream context one. */
2527  sc->extradata_size[pseudo_stream_id] = extra_size;
2528  sc->extradata[pseudo_stream_id] = av_malloc(extra_size + AV_INPUT_BUFFER_PADDING_SIZE);
2529  if (!sc->extradata[pseudo_stream_id])
2530  return AVERROR(ENOMEM);
2531  memcpy(sc->extradata[pseudo_stream_id], st->codecpar->extradata, extra_size);
2532  av_freep(&st->codecpar->extradata);
2533  st->codecpar->extradata_size = 0;
2534  }
2535  sc->stsd_count++;
2536  }
2537 
2538  if (pb->eof_reached) {
2539  av_log(c->fc, AV_LOG_WARNING, "reached eof, corrupted STSD atom\n");
2540  return AVERROR_EOF;
2541  }
2542 
2543  return 0;
2544 }
2545 
2547 {
2548  AVStream *st;
2549  MOVStreamContext *sc;
2550  int ret, entries;
2551 
2552  if (c->fc->nb_streams < 1)
2553  return 0;
2554  st = c->fc->streams[c->fc->nb_streams - 1];
2555  sc = st->priv_data;
2556 
2557  sc->stsd_version = avio_r8(pb);
2558  avio_rb24(pb); /* flags */
2559  entries = avio_rb32(pb);
2560 
2561  /* Each entry contains a size (4 bytes) and format (4 bytes). */
2562  if (entries <= 0 || entries > atom.size / 8) {
2563  av_log(c->fc, AV_LOG_ERROR, "invalid STSD entries %d\n", entries);
2564  return AVERROR_INVALIDDATA;
2565  }
2566 
2567  if (sc->extradata) {
2568  av_log(c->fc, AV_LOG_ERROR,
2569  "Duplicate stsd found in this track.\n");
2570  return AVERROR_INVALIDDATA;
2571  }
2572 
2573  /* Prepare space for hosting multiple extradata. */
2574  sc->extradata = av_mallocz_array(entries, sizeof(*sc->extradata));
2575  if (!sc->extradata)
2576  return AVERROR(ENOMEM);
2577 
2578  sc->extradata_size = av_mallocz_array(entries, sizeof(*sc->extradata_size));
2579  if (!sc->extradata_size) {
2580  ret = AVERROR(ENOMEM);
2581  goto fail;
2582  }
2583 
2584  ret = ff_mov_read_stsd_entries(c, pb, entries);
2585  if (ret < 0)
2586  goto fail;
2587 
2588  /* Restore back the primary extradata. */
2589  av_freep(&st->codecpar->extradata);
2590  st->codecpar->extradata_size = sc->extradata_size[0];
2591  if (sc->extradata_size[0]) {
2593  if (!st->codecpar->extradata)
2594  return AVERROR(ENOMEM);
2595  memcpy(st->codecpar->extradata, sc->extradata[0], sc->extradata_size[0]);
2596  }
2597 
2598  return mov_finalize_stsd_codec(c, pb, st, sc);
2599 fail:
2600  if (sc->extradata) {
2601  int j;
2602  for (j = 0; j < sc->stsd_count; j++)
2603  av_freep(&sc->extradata[j]);
2604  }
2605 
2606  av_freep(&sc->extradata);
2607  av_freep(&sc->extradata_size);
2608  return ret;
2609 }
2610 
2612 {
2613  AVStream *st;
2614  MOVStreamContext *sc;
2615  unsigned int i, entries;
2616 
2617  if (c->fc->nb_streams < 1)
2618  return 0;
2619  st = c->fc->streams[c->fc->nb_streams-1];
2620  sc = st->priv_data;
2621 
2622  avio_r8(pb); /* version */
2623  avio_rb24(pb); /* flags */
2624 
2625  entries = avio_rb32(pb);
2626  if ((uint64_t)entries * 12 + 4 > atom.size)
2627  return AVERROR_INVALIDDATA;
2628 
2629  av_log(c->fc, AV_LOG_TRACE, "track[%u].stsc.entries = %u\n", c->fc->nb_streams - 1, entries);
2630 
2631  if (!entries)
2632  return 0;
2633  if (sc->stsc_data)
2634  av_log(c->fc, AV_LOG_WARNING, "Duplicated STSC atom\n");
2635  av_free(sc->stsc_data);
2636  sc->stsc_count = 0;
2637  sc->stsc_data = av_malloc_array(entries, sizeof(*sc->stsc_data));
2638  if (!sc->stsc_data)
2639  return AVERROR(ENOMEM);
2640 
2641  for (i = 0; i < entries && !pb->eof_reached; i++) {
2642  sc->stsc_data[i].first = avio_rb32(pb);
2643  sc->stsc_data[i].count = avio_rb32(pb);
2644  sc->stsc_data[i].id = avio_rb32(pb);
2645  }
2646 
2647  sc->stsc_count = i;
2648  for (i = sc->stsc_count - 1; i < UINT_MAX; i--) {
2649  int64_t first_min = i + 1;
2650  if ((i+1 < sc->stsc_count && sc->stsc_data[i].first >= sc->stsc_data[i+1].first) ||
2651  (i > 0 && sc->stsc_data[i].first <= sc->stsc_data[i-1].first) ||
2652  sc->stsc_data[i].first < first_min ||
2653  sc->stsc_data[i].count < 1 ||
2654  sc->stsc_data[i].id < 1) {
2655  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);
2656  if (i+1 >= sc->stsc_count) {
2657  sc->stsc_data[i].first = FFMAX(sc->stsc_data[i].first, first_min);
2658  if (i > 0 && sc->stsc_data[i].first <= sc->stsc_data[i-1].first)
2659  sc->stsc_data[i].first = FFMIN(sc->stsc_data[i-1].first + 1LL, INT_MAX);
2660  sc->stsc_data[i].count = FFMAX(sc->stsc_data[i].count, 1);
2661  sc->stsc_data[i].id = FFMAX(sc->stsc_data[i].id, 1);
2662  continue;
2663  }
2664  av_assert0(sc->stsc_data[i+1].first >= 2);
2665  // We replace this entry by the next valid
2666  sc->stsc_data[i].first = sc->stsc_data[i+1].first - 1;
2667  sc->stsc_data[i].count = sc->stsc_data[i+1].count;
2668  sc->stsc_data[i].id = sc->stsc_data[i+1].id;
2669  }
2670  }
2671 
2672  if (pb->eof_reached) {
2673  av_log(c->fc, AV_LOG_WARNING, "reached eof, corrupted STSC atom\n");
2674  return AVERROR_EOF;
2675  }
2676 
2677  return 0;
2678 }
2679 
2680 static inline int mov_stsc_index_valid(unsigned int index, unsigned int count)
2681 {
2682  return index < count - 1;
2683 }
2684 
2685 /* Compute the samples value for the stsc entry at the given index. */
2686 static inline int64_t mov_get_stsc_samples(MOVStreamContext *sc, unsigned int index)
2687 {
2688  int chunk_count;
2689 
2690  if (mov_stsc_index_valid(index, sc->stsc_count))
2691  chunk_count = sc->stsc_data[index + 1].first - sc->stsc_data[index].first;
2692  else
2693  chunk_count = sc->chunk_count - (sc->stsc_data[index].first - 1);
2694 
2695  return sc->stsc_data[index].count * (int64_t)chunk_count;
2696 }
2697 
2699 {
2700  AVStream *st;
2701  MOVStreamContext *sc;
2702  unsigned i, entries;
2703 
2704  if (c->fc->nb_streams < 1)
2705  return 0;
2706  st = c->fc->streams[c->fc->nb_streams-1];
2707  sc = st->priv_data;
2708 
2709  avio_rb32(pb); // version + flags
2710 
2711  entries = avio_rb32(pb);
2712  if (sc->stps_data)
2713  av_log(c->fc, AV_LOG_WARNING, "Duplicated STPS atom\n");
2714  av_free(sc->stps_data);
2715  sc->stps_count = 0;
2716  sc->stps_data = av_malloc_array(entries, sizeof(*sc->stps_data));
2717  if (!sc->stps_data)
2718  return AVERROR(ENOMEM);
2719 
2720  for (i = 0; i < entries && !pb->eof_reached; i++) {
2721  sc->stps_data[i] = avio_rb32(pb);
2722  }
2723 
2724  sc->stps_count = i;
2725 
2726  if (pb->eof_reached) {
2727  av_log(c->fc, AV_LOG_WARNING, "reached eof, corrupted STPS atom\n");
2728  return AVERROR_EOF;
2729  }
2730 
2731  return 0;
2732 }
2733 
2735 {
2736  AVStream *st;
2737  MOVStreamContext *sc;
2738  unsigned int i, entries;
2739 
2740  if (c->fc->nb_streams < 1)
2741  return 0;
2742  st = c->fc->streams[c->fc->nb_streams-1];
2743  sc = st->priv_data;
2744 
2745  avio_r8(pb); /* version */
2746  avio_rb24(pb); /* flags */
2747 
2748  entries = avio_rb32(pb);
2749 
2750  av_log(c->fc, AV_LOG_TRACE, "keyframe_count = %u\n", entries);
2751 
2752  if (!entries)
2753  {
2754  sc->keyframe_absent = 1;
2755  if (!st->need_parsing && st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
2757  return 0;
2758  }
2759  if (sc->keyframes)
2760  av_log(c->fc, AV_LOG_WARNING, "Duplicated STSS atom\n");
2761  if (entries >= UINT_MAX / sizeof(int))
2762  return AVERROR_INVALIDDATA;
2763  av_freep(&sc->keyframes);
2764  sc->keyframe_count = 0;
2765  sc->keyframes = av_malloc_array(entries, sizeof(*sc->keyframes));
2766  if (!sc->keyframes)
2767  return AVERROR(ENOMEM);
2768 
2769  for (i = 0; i < entries && !pb->eof_reached; i++) {
2770  sc->keyframes[i] = avio_rb32(pb);
2771  }
2772 
2773  sc->keyframe_count = i;
2774 
2775  if (pb->eof_reached) {
2776  av_log(c->fc, AV_LOG_WARNING, "reached eof, corrupted STSS atom\n");
2777  return AVERROR_EOF;
2778  }
2779 
2780  return 0;
2781 }
2782 
2784 {
2785  AVStream *st;
2786  MOVStreamContext *sc;
2787  unsigned int i, entries, sample_size, field_size, num_bytes;
2788  GetBitContext gb;
2789  unsigned char* buf;
2790  int ret;
2791 
2792  if (c->fc->nb_streams < 1)
2793  return 0;
2794  st = c->fc->streams[c->fc->nb_streams-1];
2795  sc = st->priv_data;
2796 
2797  avio_r8(pb); /* version */
2798  avio_rb24(pb); /* flags */
2799 
2800  if (atom.type == MKTAG('s','t','s','z')) {
2801  sample_size = avio_rb32(pb);
2802  if (!sc->sample_size) /* do not overwrite value computed in stsd */
2803  sc->sample_size = sample_size;
2804  sc->stsz_sample_size = sample_size;
2805  field_size = 32;
2806  } else {
2807  sample_size = 0;
2808  avio_rb24(pb); /* reserved */
2809  field_size = avio_r8(pb);
2810  }
2811  entries = avio_rb32(pb);
2812 
2813  av_log(c->fc, AV_LOG_TRACE, "sample_size = %u sample_count = %u\n", sc->sample_size, entries);
2814 
2815  sc->sample_count = entries;
2816  if (sample_size)
2817  return 0;
2818 
2819  if (field_size != 4 && field_size != 8 && field_size != 16 && field_size != 32) {
2820  av_log(c->fc, AV_LOG_ERROR, "Invalid sample field size %u\n", field_size);
2821  return AVERROR_INVALIDDATA;
2822  }
2823 
2824  if (!entries)
2825  return 0;
2826  if (entries >= (UINT_MAX - 4) / field_size)
2827  return AVERROR_INVALIDDATA;
2828  if (sc->sample_sizes)
2829  av_log(c->fc, AV_LOG_WARNING, "Duplicated STSZ atom\n");
2830  av_free(sc->sample_sizes);
2831  sc->sample_count = 0;
2832  sc->sample_sizes = av_malloc_array(entries, sizeof(*sc->sample_sizes));
2833  if (!sc->sample_sizes)
2834  return AVERROR(ENOMEM);
2835 
2836  num_bytes = (entries*field_size+4)>>3;
2837 
2838  buf = av_malloc(num_bytes+AV_INPUT_BUFFER_PADDING_SIZE);
2839  if (!buf) {
2840  av_freep(&sc->sample_sizes);
2841  return AVERROR(ENOMEM);
2842  }
2843 
2844  ret = ffio_read_size(pb, buf, num_bytes);
2845  if (ret < 0) {
2846  av_freep(&sc->sample_sizes);
2847  av_free(buf);
2848  av_log(c->fc, AV_LOG_WARNING, "STSZ atom truncated\n");
2849  return 0;
2850  }
2851 
2852  init_get_bits(&gb, buf, 8*num_bytes);
2853 
2854  for (i = 0; i < entries && !pb->eof_reached; i++) {
2855  sc->sample_sizes[i] = get_bits_long(&gb, field_size);
2856  sc->data_size += sc->sample_sizes[i];
2857  }
2858 
2859  sc->sample_count = i;
2860 
2861  av_free(buf);
2862 
2863  if (pb->eof_reached) {
2864  av_log(c->fc, AV_LOG_WARNING, "reached eof, corrupted STSZ atom\n");
2865  return AVERROR_EOF;
2866  }
2867 
2868  return 0;
2869 }
2870 
2872 {
2873  AVStream *st;
2874  MOVStreamContext *sc;
2875  unsigned int i, entries, alloc_size = 0;
2876  int64_t duration=0;
2877  int64_t total_sample_count=0;
2878 
2879  if (c->fc->nb_streams < 1)
2880  return 0;
2881  st = c->fc->streams[c->fc->nb_streams-1];
2882  sc = st->priv_data;
2883 
2884  avio_r8(pb); /* version */
2885  avio_rb24(pb); /* flags */
2886  entries = avio_rb32(pb);
2887 
2888  av_log(c->fc, AV_LOG_TRACE, "track[%u].stts.entries = %u\n",
2889  c->fc->nb_streams-1, entries);
2890 
2891  if (sc->stts_data)
2892  av_log(c->fc, AV_LOG_WARNING, "Duplicated STTS atom\n");
2893  av_freep(&sc->stts_data);
2894  sc->stts_count = 0;
2895  if (entries >= INT_MAX / sizeof(*sc->stts_data))
2896  return AVERROR(ENOMEM);
2897 
2898  for (i = 0; i < entries && !pb->eof_reached; i++) {
2899  int sample_duration;
2900  unsigned int sample_count;
2901  unsigned int min_entries = FFMIN(FFMAX(i + 1, 1024 * 1024), entries);
2902  MOVStts *stts_data = av_fast_realloc(sc->stts_data, &alloc_size,
2903  min_entries * sizeof(*sc->stts_data));
2904  if (!stts_data) {
2905  av_freep(&sc->stts_data);
2906  sc->stts_count = 0;
2907  return AVERROR(ENOMEM);
2908  }
2909  sc->stts_count = min_entries;
2910  sc->stts_data = stts_data;
2911 
2912  sample_count=avio_rb32(pb);
2913  sample_duration = avio_rb32(pb);
2914 
2915  sc->stts_data[i].count= sample_count;
2916  sc->stts_data[i].duration= sample_duration;
2917 
2918  av_log(c->fc, AV_LOG_TRACE, "sample_count=%d, sample_duration=%d\n",
2919  sample_count, sample_duration);
2920 
2921  if ( i+1 == entries
2922  && i
2923  && sample_count == 1
2924  && total_sample_count > 100
2925  && sample_duration/10 > duration / total_sample_count)
2926  sample_duration = duration / total_sample_count;
2927  duration+=(int64_t)sample_duration*(uint64_t)sample_count;
2928  total_sample_count+=sample_count;
2929  }
2930 
2931  sc->stts_count = i;
2932 
2933  if (duration > 0 &&
2934  duration <= INT64_MAX - sc->duration_for_fps &&
2935  total_sample_count <= INT64_MAX - sc->nb_frames_for_fps
2936  ) {
2937  sc->duration_for_fps += duration;
2938  sc->nb_frames_for_fps += total_sample_count;
2939  }
2940 
2941  if (pb->eof_reached) {
2942  av_log(c->fc, AV_LOG_WARNING, "reached eof, corrupted STTS atom\n");
2943  return AVERROR_EOF;
2944  }
2945 
2946  st->nb_frames= total_sample_count;
2947  if (duration)
2948  st->duration= FFMIN(st->duration, duration);
2949  sc->track_end = duration;
2950  return 0;
2951 }
2952 
2954 {
2955  if (duration < 0) {
2956  if (duration == INT_MIN) {
2957  av_log(NULL, AV_LOG_WARNING, "mov_update_dts_shift(): dts_shift set to %d\n", INT_MAX);
2958  duration++;
2959  }
2960  sc->dts_shift = FFMAX(sc->dts_shift, -duration);
2961  }
2962 }
2963 
2965 {
2966  AVStream *st;
2967  MOVStreamContext *sc;
2968  unsigned int i, entries, ctts_count = 0;
2969 
2970  if (c->fc->nb_streams < 1)
2971  return 0;
2972  st = c->fc->streams[c->fc->nb_streams-1];
2973  sc = st->priv_data;
2974 
2975  avio_r8(pb); /* version */
2976  avio_rb24(pb); /* flags */
2977  entries = avio_rb32(pb);
2978 
2979  av_log(c->fc, AV_LOG_TRACE, "track[%u].ctts.entries = %u\n", c->fc->nb_streams - 1, entries);
2980 
2981  if (!entries)
2982  return 0;
2983  if (entries >= UINT_MAX / sizeof(*sc->ctts_data))
2984  return AVERROR_INVALIDDATA;
2985  av_freep(&sc->ctts_data);
2986  sc->ctts_data = av_fast_realloc(NULL, &sc->ctts_allocated_size, entries * sizeof(*sc->ctts_data));
2987  if (!sc->ctts_data)
2988  return AVERROR(ENOMEM);
2989 
2990  for (i = 0; i < entries && !pb->eof_reached; i++) {
2991  int count =avio_rb32(pb);
2992  int duration =avio_rb32(pb);
2993 
2994  if (count <= 0) {
2995  av_log(c->fc, AV_LOG_TRACE,
2996  "ignoring CTTS entry with count=%d duration=%d\n",
2997  count, duration);
2998  continue;
2999  }
3000 
3001  add_ctts_entry(&sc->ctts_data, &ctts_count, &sc->ctts_allocated_size,
3002  count, duration);
3003 
3004  av_log(c->fc, AV_LOG_TRACE, "count=%d, duration=%d\n",
3005  count, duration);
3006 
3007  if (FFNABS(duration) < -(1<<28) && i+2<entries) {
3008  av_log(c->fc, AV_LOG_WARNING, "CTTS invalid\n");
3009  av_freep(&sc->ctts_data);
3010  sc->ctts_count = 0;
3011  return 0;
3012  }
3013 
3014  if (i+2<entries)
3015  mov_update_dts_shift(sc, duration);
3016  }
3017 
3018  sc->ctts_count = ctts_count;
3019 
3020  if (pb->eof_reached) {
3021  av_log(c->fc, AV_LOG_WARNING, "reached eof, corrupted CTTS atom\n");
3022  return AVERROR_EOF;
3023  }
3024 
3025  av_log(c->fc, AV_LOG_TRACE, "dts shift %d\n", sc->dts_shift);
3026 
3027  return 0;
3028 }
3029 
3031 {
3032  AVStream *st;
3033  MOVStreamContext *sc;
3034  unsigned int i, entries;
3035  uint8_t version;
3036  uint32_t grouping_type;
3037 
3038  if (c->fc->nb_streams < 1)
3039  return 0;
3040  st = c->fc->streams[c->fc->nb_streams-1];
3041  sc = st->priv_data;
3042 
3043  version = avio_r8(pb); /* version */
3044  avio_rb24(pb); /* flags */
3045  grouping_type = avio_rl32(pb);
3046  if (grouping_type != MKTAG( 'r','a','p',' '))
3047  return 0; /* only support 'rap ' grouping */
3048  if (version == 1)
3049  avio_rb32(pb); /* grouping_type_parameter */
3050 
3051  entries = avio_rb32(pb);
3052  if (!entries)
3053  return 0;
3054  if (sc->rap_group)
3055  av_log(c->fc, AV_LOG_WARNING, "Duplicated SBGP atom\n");
3056  av_free(sc->rap_group);
3057  sc->rap_group_count = 0;
3058  sc->rap_group = av_malloc_array(entries, sizeof(*sc->rap_group));
3059  if (!sc->rap_group)
3060  return AVERROR(ENOMEM);
3061 
3062  for (i = 0; i < entries && !pb->eof_reached; i++) {
3063  sc->rap_group[i].count = avio_rb32(pb); /* sample_count */
3064  sc->rap_group[i].index = avio_rb32(pb); /* group_description_index */
3065  }
3066 
3067  sc->rap_group_count = i;
3068 
3069  if (pb->eof_reached) {
3070  av_log(c->fc, AV_LOG_WARNING, "reached eof, corrupted SBGP atom\n");
3071  return AVERROR_EOF;
3072  }
3073 
3074  return 0;
3075 }
3076 
3077 /**
3078  * Get ith edit list entry (media time, duration).
3079  */
3081  const MOVStreamContext *msc,
3082  unsigned int edit_list_index,
3083  int64_t *edit_list_media_time,
3084  int64_t *edit_list_duration,
3085  int64_t global_timescale)
3086 {
3087  if (edit_list_index == msc->elst_count) {
3088  return 0;
3089  }
3090  *edit_list_media_time = msc->elst_data[edit_list_index].time;
3091  *edit_list_duration = msc->elst_data[edit_list_index].duration;
3092 
3093  /* duration is in global timescale units;convert to msc timescale */
3094  if (global_timescale == 0) {
3095  avpriv_request_sample(mov->fc, "Support for mvhd.timescale = 0 with editlists");
3096  return 0;
3097  }
3098  *edit_list_duration = av_rescale(*edit_list_duration, msc->time_scale,
3099  global_timescale);
3100  return 1;
3101 }
3102 
3103 /**
3104  * Find the closest previous frame to the timestamp_pts, in e_old index
3105  * entries. Searching for just any frame / just key frames can be controlled by
3106  * last argument 'flag'.
3107  * Note that if ctts_data is not NULL, we will always search for a key frame
3108  * irrespective of the value of 'flag'. If we don't find any keyframe, we will
3109  * return the first frame of the video.
3110  *
3111  * Here the timestamp_pts is considered to be a presentation timestamp and
3112  * the timestamp of index entries are considered to be decoding timestamps.
3113  *
3114  * Returns 0 if successful in finding a frame, else returns -1.
3115  * Places the found index corresponding output arg.
3116  *
3117  * If ctts_old is not NULL, then refines the searched entry by searching
3118  * backwards from the found timestamp, to find the frame with correct PTS.
3119  *
3120  * Places the found ctts_index and ctts_sample in corresponding output args.
3121  */
3123  AVIndexEntry *e_old,
3124  int nb_old,
3125  MOVStts* ctts_data,
3126  int64_t ctts_count,
3127  int64_t timestamp_pts,
3128  int flag,
3129  int64_t* index,
3130  int64_t* ctts_index,
3131  int64_t* ctts_sample)
3132 {
3133  MOVStreamContext *msc = st->priv_data;
3134  AVIndexEntry *e_keep = st->index_entries;
3135  int nb_keep = st->nb_index_entries;
3136  int64_t i = 0;
3137  int64_t index_ctts_count;
3138 
3139  av_assert0(index);
3140 
3141  // If dts_shift > 0, then all the index timestamps will have to be offset by
3142  // at least dts_shift amount to obtain PTS.
3143  // Hence we decrement the searched timestamp_pts by dts_shift to find the closest index element.
3144  if (msc->dts_shift > 0) {
3145  timestamp_pts -= msc->dts_shift;
3146  }
3147 
3148  st->index_entries = e_old;
3149  st->nb_index_entries = nb_old;
3150  *index = av_index_search_timestamp(st, timestamp_pts, flag | AVSEEK_FLAG_BACKWARD);
3151 
3152  // Keep going backwards in the index entries until the timestamp is the same.
3153  if (*index >= 0) {
3154  for (i = *index; i > 0 && e_old[i].timestamp == e_old[i - 1].timestamp;
3155  i--) {
3156  if ((flag & AVSEEK_FLAG_ANY) ||
3157  (e_old[i - 1].flags & AVINDEX_KEYFRAME)) {
3158  *index = i - 1;
3159  }
3160  }
3161  }
3162 
3163  // If we have CTTS then refine the search, by searching backwards over PTS
3164  // computed by adding corresponding CTTS durations to index timestamps.
3165  if (ctts_data && *index >= 0) {
3166  av_assert0(ctts_index);
3167  av_assert0(ctts_sample);
3168  // Find out the ctts_index for the found frame.
3169  *ctts_index = 0;
3170  *ctts_sample = 0;
3171  for (index_ctts_count = 0; index_ctts_count < *index; index_ctts_count++) {
3172  if (*ctts_index < ctts_count) {
3173  (*ctts_sample)++;
3174  if (ctts_data[*ctts_index].count == *ctts_sample) {
3175  (*ctts_index)++;
3176  *ctts_sample = 0;
3177  }
3178  }
3179  }
3180 
3181  while (*index >= 0 && (*ctts_index) >= 0 && (*ctts_index) < ctts_count) {
3182  // Find a "key frame" with PTS <= timestamp_pts (So that we can decode B-frames correctly).
3183  // No need to add dts_shift to the timestamp here becase timestamp_pts has already been
3184  // compensated by dts_shift above.
3185  if ((e_old[*index].timestamp + ctts_data[*ctts_index].duration) <= timestamp_pts &&
3186  (e_old[*index].flags & AVINDEX_KEYFRAME)) {
3187  break;
3188  }
3189 
3190  (*index)--;
3191  if (*ctts_sample == 0) {
3192  (*ctts_index)--;
3193  if (*ctts_index >= 0)
3194  *ctts_sample = ctts_data[*ctts_index].count - 1;
3195  } else {
3196  (*ctts_sample)--;
3197  }
3198  }
3199  }
3200 
3201  /* restore AVStream state*/
3202  st->index_entries = e_keep;
3203  st->nb_index_entries = nb_keep;
3204  return *index >= 0 ? 0 : -1;
3205 }
3206 
3207 /**
3208  * Add index entry with the given values, to the end of st->index_entries.
3209  * Returns the new size st->index_entries if successful, else returns -1.
3210  *
3211  * This function is similar to ff_add_index_entry in libavformat/utils.c
3212  * except that here we are always unconditionally adding an index entry to
3213  * the end, instead of searching the entries list and skipping the add if
3214  * there is an existing entry with the same timestamp.
3215  * This is needed because the mov_fix_index calls this func with the same
3216  * unincremented timestamp for successive discarded frames.
3217  */
3218 static int64_t add_index_entry(AVStream *st, int64_t pos, int64_t timestamp,
3219  int size, int distance, int flags)
3220 {
3221  AVIndexEntry *entries, *ie;
3222  int64_t index = -1;
3223  const size_t min_size_needed = (st->nb_index_entries + 1) * sizeof(AVIndexEntry);
3224 
3225  // Double the allocation each time, to lower memory fragmentation.
3226  // Another difference from ff_add_index_entry function.
3227  const size_t requested_size =
3228  min_size_needed > st->index_entries_allocated_size ?
3229  FFMAX(min_size_needed, 2 * st->index_entries_allocated_size) :
3230  min_size_needed;
3231 
3232  if((unsigned)st->nb_index_entries + 1 >= UINT_MAX / sizeof(AVIndexEntry))
3233  return -1;
3234 
3235  entries = av_fast_realloc(st->index_entries,
3237  requested_size);
3238  if(!entries)
3239  return -1;
3240 
3241  st->index_entries= entries;
3242 
3243  index= st->nb_index_entries++;
3244  ie= &entries[index];
3245 
3246  ie->pos = pos;
3247  ie->timestamp = timestamp;
3248  ie->min_distance= distance;
3249  ie->size= size;
3250  ie->flags = flags;
3251  return index;
3252 }
3253 
3254 /**
3255  * Rewrite timestamps of index entries in the range [end_index - frame_duration_buffer_size, end_index)
3256  * by subtracting end_ts successively by the amounts given in frame_duration_buffer.
3257  */
3258 static void fix_index_entry_timestamps(AVStream* st, int end_index, int64_t end_ts,
3259  int64_t* frame_duration_buffer,
3260  int frame_duration_buffer_size) {
3261  int i = 0;
3262  av_assert0(end_index >= 0 && end_index <= st->nb_index_entries);
3263  for (i = 0; i < frame_duration_buffer_size; i++) {
3264  end_ts -= frame_duration_buffer[frame_duration_buffer_size - 1 - i];
3265  st->index_entries[end_index - 1 - i].timestamp = end_ts;
3266  }
3267 }
3268 
3269 /**
3270  * Append a new ctts entry to ctts_data.
3271  * Returns the new ctts_count if successful, else returns -1.
3272  */
3273 static int64_t add_ctts_entry(MOVStts** ctts_data, unsigned int* ctts_count, unsigned int* allocated_size,
3274  int count, int duration)
3275 {
3276  MOVStts *ctts_buf_new;
3277  const size_t min_size_needed = (*ctts_count + 1) * sizeof(MOVStts);
3278  const size_t requested_size =
3279  min_size_needed > *allocated_size ?
3280  FFMAX(min_size_needed, 2 * (*allocated_size)) :
3281  min_size_needed;
3282 
3283  if((unsigned)(*ctts_count) >= UINT_MAX / sizeof(MOVStts) - 1)
3284  return -1;
3285 
3286  ctts_buf_new = av_fast_realloc(*ctts_data, allocated_size, requested_size);
3287 
3288  if(!ctts_buf_new)
3289  return -1;
3290 
3291  *ctts_data = ctts_buf_new;
3292 
3293  ctts_buf_new[*ctts_count].count = count;
3294  ctts_buf_new[*ctts_count].duration = duration;
3295 
3296  *ctts_count = (*ctts_count) + 1;
3297  return *ctts_count;
3298 }
3299 
3300 #define MAX_REORDER_DELAY 16
3302  MOVStreamContext *msc = st->priv_data;
3303  int ind;
3304  int ctts_ind = 0;
3305  int ctts_sample = 0;
3306  int64_t pts_buf[MAX_REORDER_DELAY + 1]; // Circular buffer to sort pts.
3307  int buf_start = 0;
3308  int j, r, num_swaps;
3309 
3310  for (j = 0; j < MAX_REORDER_DELAY + 1; j++)
3311  pts_buf[j] = INT64_MIN;
3312 
3313  if (st->codecpar->video_delay <= 0 && msc->ctts_data &&
3315  st->codecpar->video_delay = 0;
3316  for(ind = 0; ind < st->nb_index_entries && ctts_ind < msc->ctts_count; ++ind) {
3317  // Point j to the last elem of the buffer and insert the current pts there.
3318  j = buf_start;
3319  buf_start = (buf_start + 1);
3320  if (buf_start == MAX_REORDER_DELAY + 1)
3321  buf_start = 0;
3322 
3323  pts_buf[j] = st->index_entries[ind].timestamp + msc->ctts_data[ctts_ind].duration;
3324 
3325  // The timestamps that are already in the sorted buffer, and are greater than the
3326  // current pts, are exactly the timestamps that need to be buffered to output PTS
3327  // in correct sorted order.
3328  // Hence the video delay (which is the buffer size used to sort DTS and output PTS),
3329  // can be computed as the maximum no. of swaps any particular timestamp needs to
3330  // go through, to keep this buffer in sorted order.
3331  num_swaps = 0;
3332  while (j != buf_start) {
3333  r = j - 1;
3334  if (r < 0) r = MAX_REORDER_DELAY;
3335  if (pts_buf[j] < pts_buf[r]) {
3336  FFSWAP(int64_t, pts_buf[j], pts_buf[r]);
3337  ++num_swaps;
3338  } else {
3339  break;
3340  }
3341  j = r;
3342  }
3343  st->codecpar->video_delay = FFMAX(st->codecpar->video_delay, num_swaps);
3344 
3345  ctts_sample++;
3346  if (ctts_sample == msc->ctts_data[ctts_ind].count) {
3347  ctts_ind++;
3348  ctts_sample = 0;
3349  }
3350  }
3351  av_log(c->fc, AV_LOG_DEBUG, "Setting codecpar->delay to %d for stream st: %d\n",
3352  st->codecpar->video_delay, st->index);
3353  }
3354 }
3355 
3357 {
3358  sc->current_sample++;
3359  sc->current_index++;
3360  if (sc->index_ranges &&
3361  sc->current_index >= sc->current_index_range->end &&
3362  sc->current_index_range->end) {
3363  sc->current_index_range++;
3365  }
3366 }
3367 
3369 {
3370  sc->current_sample--;
3371  sc->current_index--;
3372  if (sc->index_ranges &&
3374  sc->current_index_range > sc->index_ranges) {
3375  sc->current_index_range--;
3376  sc->current_index = sc->current_index_range->end - 1;
3377  }
3378 }
3379 
3380 static void mov_current_sample_set(MOVStreamContext *sc, int current_sample)
3381 {
3382  int64_t range_size;
3383 
3384  sc->current_sample = current_sample;
3385  sc->current_index = current_sample;
3386  if (!sc->index_ranges) {
3387  return;
3388  }
3389 
3390  for (sc->current_index_range = sc->index_ranges;
3391  sc->current_index_range->end;
3392  sc->current_index_range++) {
3393  range_size = sc->current_index_range->end - sc->current_index_range->start;
3394  if (range_size > current_sample) {
3395  sc->current_index = sc->current_index_range->start + current_sample;
3396  break;
3397  }
3398  current_sample -= range_size;
3399  }
3400 }
3401 
3402 /**
3403  * Fix st->index_entries, so that it contains only the entries (and the entries
3404  * which are needed to decode them) that fall in the edit list time ranges.
3405  * Also fixes the timestamps of the index entries to match the timeline
3406  * specified the edit lists.
3407  */
3408 static void mov_fix_index(MOVContext *mov, AVStream *st)
3409 {
3410  MOVStreamContext *msc = st->priv_data;
3411  AVIndexEntry *e_old = st->index_entries;
3412  int nb_old = st->nb_index_entries;
3413  const AVIndexEntry *e_old_end = e_old + nb_old;
3414  const AVIndexEntry *current = NULL;
3415  MOVStts *ctts_data_old = msc->ctts_data;
3416  int64_t ctts_index_old = 0;
3417  int64_t ctts_sample_old = 0;
3418  int64_t ctts_count_old = msc->ctts_count;
3419  int64_t edit_list_media_time = 0;
3420  int64_t edit_list_duration = 0;
3421  int64_t frame_duration = 0;
3422  int64_t edit_list_dts_counter = 0;
3423  int64_t edit_list_dts_entry_end = 0;
3424  int64_t edit_list_start_ctts_sample = 0;
3425  int64_t curr_cts;
3426  int64_t curr_ctts = 0;
3427  int64_t empty_edits_sum_duration = 0;
3428  int64_t edit_list_index = 0;
3429  int64_t index;
3430  int flags;
3431  int64_t start_dts = 0;
3432  int64_t edit_list_start_encountered = 0;
3433  int64_t search_timestamp = 0;
3434  int64_t* frame_duration_buffer = NULL;
3435  int num_discarded_begin = 0;
3436  int first_non_zero_audio_edit = -1;
3437  int packet_skip_samples = 0;
3438  MOVIndexRange *current_index_range;
3439  int i;
3440  int found_keyframe_after_edit = 0;
3441 
3442  if (!msc->elst_data || msc->elst_count <= 0 || nb_old <= 0) {
3443  return;
3444  }
3445 
3446  // allocate the index ranges array
3447  msc->index_ranges = av_malloc((msc->elst_count + 1) * sizeof(msc->index_ranges[0]));
3448  if (!msc->index_ranges) {
3449  av_log(mov->fc, AV_LOG_ERROR, "Cannot allocate index ranges buffer\n");
3450  return;
3451  }
3452  msc->current_index_range = msc->index_ranges;
3453  current_index_range = msc->index_ranges - 1;
3454 
3455  // Clean AVStream from traces of old index
3456  st->index_entries = NULL;
3458  st->nb_index_entries = 0;
3459 
3460  // Clean ctts fields of MOVStreamContext
3461  msc->ctts_data = NULL;
3462  msc->ctts_count = 0;
3463  msc->ctts_index = 0;
3464  msc->ctts_sample = 0;
3465  msc->ctts_allocated_size = 0;
3466 
3467  // Reinitialize min_corrected_pts so that it can be computed again.
3468  msc->min_corrected_pts = -1;
3469 
3470  // If the dts_shift is positive (in case of negative ctts values in mov),
3471  // then negate the DTS by dts_shift
3472  if (msc->dts_shift > 0) {
3473  edit_list_dts_entry_end -= msc->dts_shift;
3474  av_log(mov->fc, AV_LOG_DEBUG, "Shifting DTS by %d because of negative CTTS.\n", msc->dts_shift);
3475  }
3476 
3477  start_dts = edit_list_dts_entry_end;
3478 
3479  while (get_edit_list_entry(mov, msc, edit_list_index, &edit_list_media_time,
3480  &edit_list_duration, mov->time_scale)) {
3481  av_log(mov->fc, AV_LOG_DEBUG, "Processing st: %d, edit list %"PRId64" - media time: %"PRId64", duration: %"PRId64"\n",
3482  st->index, edit_list_index, edit_list_media_time, edit_list_duration);
3483  edit_list_index++;
3484  edit_list_dts_counter = edit_list_dts_entry_end;
3485  edit_list_dts_entry_end += edit_list_duration;
3486  num_discarded_begin = 0;
3487  if (edit_list_media_time == -1) {
3488  empty_edits_sum_duration += edit_list_duration;
3489  continue;
3490  }
3491 
3492  // If we encounter a non-negative edit list reset the skip_samples/start_pad fields and set them
3493  // according to the edit list below.
3494  if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
3495  if (first_non_zero_audio_edit < 0) {
3496  first_non_zero_audio_edit = 1;
3497  } else {
3498  first_non_zero_audio_edit = 0;
3499  }
3500 
3501  if (first_non_zero_audio_edit > 0)
3502  st->skip_samples = msc->start_pad = 0;
3503  }
3504 
3505  // While reordering frame index according to edit list we must handle properly
3506  // the scenario when edit list entry starts from none key frame.
3507  // We find closest previous key frame and preserve it and consequent frames in index.
3508  // All frames which are outside edit list entry time boundaries will be dropped after decoding.
3509  search_timestamp = edit_list_media_time;
3510  if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
3511  // Audio decoders like AAC need need a decoder delay samples previous to the current sample,
3512  // to correctly decode this frame. Hence for audio we seek to a frame 1 sec. before the
3513  // edit_list_media_time to cover the decoder delay.
3514  search_timestamp = FFMAX(search_timestamp - msc->time_scale, e_old[0].timestamp);
3515  }
3516 
3517  if (find_prev_closest_index(st, e_old, nb_old, ctts_data_old, ctts_count_old, search_timestamp, 0,
3518  &index, &ctts_index_old, &ctts_sample_old) < 0) {
3519  av_log(mov->fc, AV_LOG_WARNING,
3520  "st: %d edit list: %"PRId64" Missing key frame while searching for timestamp: %"PRId64"\n",
3521  st->index, edit_list_index, search_timestamp);
3522  if (find_prev_closest_index(st, e_old, nb_old, ctts_data_old, ctts_count_old, search_timestamp, AVSEEK_FLAG_ANY,
3523  &index, &ctts_index_old, &ctts_sample_old) < 0) {
3524  av_log(mov->fc, AV_LOG_WARNING,
3525  "st: %d edit list %"PRId64" Cannot find an index entry before timestamp: %"PRId64".\n",
3526  st->index, edit_list_index, search_timestamp);
3527  index = 0;
3528  ctts_index_old = 0;
3529  ctts_sample_old = 0;
3530  }
3531  }
3532  current = e_old + index;
3533  edit_list_start_ctts_sample = ctts_sample_old;
3534 
3535  // Iterate over index and arrange it according to edit list
3536  edit_list_start_encountered = 0;
3537  found_keyframe_after_edit = 0;
3538  for (; current < e_old_end; current++, index++) {
3539  // check if frame outside edit list mark it for discard
3540  frame_duration = (current + 1 < e_old_end) ?
3541  ((current + 1)->timestamp - current->timestamp) : edit_list_duration;
3542 
3543  flags = current->flags;
3544 
3545  // frames (pts) before or after edit list
3546  curr_cts = current->timestamp + msc->dts_shift;
3547  curr_ctts = 0;
3548 
3549  if (ctts_data_old && ctts_index_old < ctts_count_old) {
3550  curr_ctts = ctts_data_old[ctts_index_old].duration;
3551  av_log(mov->fc, AV_LOG_DEBUG, "stts: %"PRId64" ctts: %"PRId64", ctts_index: %"PRId64", ctts_count: %"PRId64"\n",
3552  curr_cts, curr_ctts, ctts_index_old, ctts_count_old);
3553  curr_cts += curr_ctts;
3554  ctts_sample_old++;
3555  if (ctts_sample_old == ctts_data_old[ctts_index_old].count) {
3556  if (add_ctts_entry(&msc->ctts_data, &msc->ctts_count,
3557  &msc->ctts_allocated_size,
3558  ctts_data_old[ctts_index_old].count - edit_list_start_ctts_sample,
3559  ctts_data_old[ctts_index_old].duration) == -1) {
3560  av_log(mov->fc, AV_LOG_ERROR, "Cannot add CTTS entry %"PRId64" - {%"PRId64", %d}\n",
3561  ctts_index_old,
3562  ctts_data_old[ctts_index_old].count - edit_list_start_ctts_sample,
3563  ctts_data_old[ctts_index_old].duration);
3564  break;
3565  }
3566  ctts_index_old++;
3567  ctts_sample_old = 0;
3568  edit_list_start_ctts_sample = 0;
3569  }
3570  }
3571 
3572  if (curr_cts < edit_list_media_time || curr_cts >= (edit_list_duration + edit_list_media_time)) {
3574  curr_cts < edit_list_media_time && curr_cts + frame_duration > edit_list_media_time &&
3575  first_non_zero_audio_edit > 0) {
3576  packet_skip_samples = edit_list_media_time - curr_cts;
3577  st->skip_samples += packet_skip_samples;
3578 
3579  // Shift the index entry timestamp by packet_skip_samples to be correct.
3580  edit_list_dts_counter -= packet_skip_samples;
3581  if (edit_list_start_encountered == 0) {
3582  edit_list_start_encountered = 1;
3583  // Make timestamps strictly monotonically increasing for audio, by rewriting timestamps for
3584  // discarded packets.
3585  if (frame_duration_buffer) {
3586  fix_index_entry_timestamps(st, st->nb_index_entries, edit_list_dts_counter,
3587  frame_duration_buffer, num_discarded_begin);
3588  av_freep(&frame_duration_buffer);
3589  }
3590  }
3591 
3592  av_log(mov->fc, AV_LOG_DEBUG, "skip %d audio samples from curr_cts: %"PRId64"\n", packet_skip_samples, curr_cts);
3593  } else {
3594  flags |= AVINDEX_DISCARD_FRAME;
3595  av_log(mov->fc, AV_LOG_DEBUG, "drop a frame at curr_cts: %"PRId64" @ %"PRId64"\n", curr_cts, index);
3596 
3597  if (edit_list_start_encountered == 0) {
3598  num_discarded_begin++;
3599  frame_duration_buffer = av_realloc(frame_duration_buffer,
3600  num_discarded_begin * sizeof(int64_t));
3601  if (!frame_duration_buffer) {
3602  av_log(mov->fc, AV_LOG_ERROR, "Cannot reallocate frame duration buffer\n");
3603  break;
3604  }
3605  frame_duration_buffer[num_discarded_begin - 1] = frame_duration;
3606 
3607  // Increment skip_samples for the first non-zero audio edit list
3608  if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
3609  first_non_zero_audio_edit > 0 && st->codecpar->codec_id != AV_CODEC_ID_VORBIS) {
3610  st->skip_samples += frame_duration;
3611  }
3612  }
3613  }
3614  } else {
3615  if (msc->min_corrected_pts < 0) {
3616  msc->min_corrected_pts = edit_list_dts_counter + curr_ctts + msc->dts_shift;
3617  } else {
3618  msc->min_corrected_pts = FFMIN(msc->min_corrected_pts, edit_list_dts_counter + curr_ctts + msc->dts_shift);
3619  }
3620  if (edit_list_start_encountered == 0) {
3621  edit_list_start_encountered = 1;
3622  // Make timestamps strictly monotonically increasing by rewriting timestamps for
3623  // discarded packets.
3624  if (frame_duration_buffer) {
3625  fix_index_entry_timestamps(st, st->nb_index_entries, edit_list_dts_counter,
3626  frame_duration_buffer, num_discarded_begin);
3627  av_freep(&frame_duration_buffer);
3628  }
3629  }
3630  }
3631 
3632  if (add_index_entry(st, current->pos, edit_list_dts_counter, current->size,
3633  current->min_distance, flags) == -1) {
3634  av_log(mov->fc, AV_LOG_ERROR, "Cannot add index entry\n");
3635  break;
3636  }
3637 
3638  // Update the index ranges array
3639  if (current_index_range < msc->index_ranges || index != current_index_range->end) {
3640  current_index_range++;
3641  current_index_range->start = index;
3642  }
3643  current_index_range->end = index + 1;
3644 
3645  // Only start incrementing DTS in frame_duration amounts, when we encounter a frame in edit list.
3646  if (edit_list_start_encountered > 0) {
3647  edit_list_dts_counter = edit_list_dts_counter + frame_duration;
3648  }
3649 
3650  // Break when found first key frame after edit entry completion
3651  if ((curr_cts + frame_duration >= (edit_list_duration + edit_list_media_time)) &&
3652  ((flags & AVINDEX_KEYFRAME) || ((st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)))) {
3653  if (ctts_data_old) {
3654  // If we have CTTS and this is the first keyframe after edit elist,
3655  // wait for one more, because there might be trailing B-frames after this I-frame
3656  // that do belong to the edit.
3657  if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO && found_keyframe_after_edit == 0) {
3658  found_keyframe_after_edit = 1;
3659  continue;
3660  }
3661  if (ctts_sample_old != 0) {
3662  if (add_ctts_entry(&msc->ctts_data, &msc->ctts_count,
3663  &msc->ctts_allocated_size,
3664  ctts_sample_old - edit_list_start_ctts_sample,
3665  ctts_data_old[ctts_index_old].duration) == -1) {
3666  av_log(mov->fc, AV_LOG_ERROR, "Cannot add CTTS entry %"PRId64" - {%"PRId64", %d}\n",
3667  ctts_index_old, ctts_sample_old - edit_list_start_ctts_sample,
3668  ctts_data_old[ctts_index_old].duration);
3669  break;
3670  }
3671  }
3672  }
3673  break;
3674  }
3675  }
3676  }
3677  // If there are empty edits, then msc->min_corrected_pts might be positive
3678  // intentionally. So we subtract the sum duration of emtpy edits here.
3679  msc->min_corrected_pts -= empty_edits_sum_duration;
3680 
3681  // If the minimum pts turns out to be greater than zero after fixing the index, then we subtract the
3682  // dts by that amount to make the first pts zero.
3683  if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
3684  if (msc->min_corrected_pts > 0) {
3685  av_log(mov->fc, AV_LOG_DEBUG, "Offset DTS by %"PRId64" to make first pts zero.\n", msc->min_corrected_pts);
3686  for (i = 0; i < st->nb_index_entries; ++i) {
3687  st->index_entries[i].timestamp -= msc->min_corrected_pts;
3688  }
3689  }
3690  }
3691  // Start time should be equal to zero or the duration of any empty edits.
3692  st->start_time = empty_edits_sum_duration;
3693 
3694  // Update av stream length, if it ends up shorter than the track's media duration
3695  st->duration = FFMIN(st->duration, edit_list_dts_entry_end - start_dts);
3696  msc->start_pad = st->skip_samples;
3697 
3698  // Free the old index and the old CTTS structures
3699  av_free(e_old);
3700  av_free(ctts_data_old);
3701  av_freep(&frame_duration_buffer);
3702 
3703  // Null terminate the index ranges array
3704  current_index_range++;
3705  current_index_range->start = 0;
3706  current_index_range->end = 0;
3707  msc->current_index = msc->index_ranges[0].start;
3708 }
3709 
3710 static void mov_build_index(MOVContext *mov, AVStream *st)
3711 {
3712  MOVStreamContext *sc = st->priv_data;
3713  int64_t current_offset;
3714  int64_t current_dts = 0;
3715  unsigned int stts_index = 0;
3716  unsigned int stsc_index = 0;
3717  unsigned int stss_index = 0;
3718  unsigned int stps_index = 0;
3719  unsigned int i, j;
3720  uint64_t stream_size = 0;
3721  MOVStts *ctts_data_old = sc->ctts_data;
3722  unsigned int ctts_count_old = sc->ctts_count;
3723 
3724  if (sc->elst_count) {
3725  int i, edit_start_index = 0, multiple_edits = 0;
3726  int64_t empty_duration = 0; // empty duration of the first edit list entry
3727  int64_t start_time = 0; // start time of the media
3728 
3729  for (i = 0; i < sc->elst_count; i++) {
3730  const MOVElst *e = &sc->elst_data[i];
3731  if (i == 0 && e->time == -1) {
3732  /* if empty, the first entry is the start time of the stream
3733  * relative to the presentation itself */
3734  empty_duration = e->duration;
3735  edit_start_index = 1;
3736  } else if (i == edit_start_index && e->time >= 0) {
3737  start_time = e->time;
3738  } else {
3739  multiple_edits = 1;
3740  }
3741  }
3742 
3743  if (multiple_edits && !mov->advanced_editlist)
3744  av_log(mov->fc, AV_LOG_WARNING, "multiple edit list entries, "
3745  "Use -advanced_editlist to correctly decode otherwise "
3746  "a/v desync might occur\n");
3747 
3748  /* adjust first dts according to edit list */
3749  if ((empty_duration || start_time) && mov->time_scale > 0) {
3750  if (empty_duration)
3751  empty_duration = av_rescale(empty_duration, sc->time_scale, mov->time_scale);
3752  sc->time_offset = start_time - empty_duration;
3754  if (!mov->advanced_editlist)
3755  current_dts = -sc->time_offset;
3756  }
3757 
3758  if (!multiple_edits && !mov->advanced_editlist &&
3759  st->codecpar->codec_id == AV_CODEC_ID_AAC && start_time > 0)
3760  sc->start_pad = start_time;
3761  }
3762 
3763  /* only use old uncompressed audio chunk demuxing when stts specifies it */
3764  if (!(st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
3765  sc->stts_count == 1 && sc->stts_data[0].duration == 1)) {
3766  unsigned int current_sample = 0;
3767  unsigned int stts_sample = 0;
3768  unsigned int sample_size;
3769  unsigned int distance = 0;
3770  unsigned int rap_group_index = 0;
3771  unsigned int rap_group_sample = 0;
3772  int64_t last_dts = 0;
3773  int64_t dts_correction = 0;
3774  int rap_group_present = sc->rap_group_count && sc->rap_group;
3775  int key_off = (sc->keyframe_count && sc->keyframes[0] > 0) || (sc->stps_count && sc->stps_data[0] > 0);
3776 
3777  current_dts -= sc->dts_shift;
3778  last_dts = current_dts;
3779 
3780  if (!sc->sample_count || st->nb_index_entries)
3781  return;
3782  if (sc->sample_count >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries)
3783  return;
3785  st->nb_index_entries + sc->sample_count,
3786  sizeof(*st->index_entries)) < 0) {
3787  st->nb_index_entries = 0;
3788  return;
3789  }
3791 
3792  if (ctts_data_old) {
3793  // Expand ctts entries such that we have a 1-1 mapping with samples
3794  if (sc->sample_count >= UINT_MAX / sizeof(*sc->ctts_data))
3795  return;
3796  sc->ctts_count = 0;
3797  sc->ctts_allocated_size = 0;
3799  sc->sample_count * sizeof(*sc->ctts_data));
3800  if (!sc->ctts_data) {
3801  av_free(ctts_data_old);
3802  return;
3803  }
3804 
3805  memset((uint8_t*)(sc->ctts_data), 0, sc->ctts_allocated_size);
3806 
3807  for (i = 0; i < ctts_count_old &&
3808  sc->ctts_count < sc->sample_count; i++)
3809  for (j = 0; j < ctts_data_old[i].count &&
3810  sc->ctts_count < sc->sample_count; j++)
3811  add_ctts_entry(&sc->ctts_data, &sc->ctts_count,
3812  &sc->ctts_allocated_size, 1,
3813  ctts_data_old[i].duration);
3814  av_free(ctts_data_old);
3815  }
3816 
3817  for (i = 0; i < sc->chunk_count; i++) {
3818  int64_t next_offset = i+1 < sc->chunk_count ? sc->chunk_offsets[i+1] : INT64_MAX;
3819  current_offset = sc->chunk_offsets[i];
3820  while (mov_stsc_index_valid(stsc_index, sc->stsc_count) &&
3821  i + 1 == sc->stsc_data[stsc_index + 1].first)
3822  stsc_index++;
3823 
3824  if (next_offset > current_offset && sc->sample_size>0 && sc->sample_size < sc->stsz_sample_size &&
3825  sc->stsc_data[stsc_index].count * (int64_t)sc->stsz_sample_size > next_offset - current_offset) {
3826  av_log(mov->fc, AV_LOG_WARNING, "STSZ sample size %d invalid (too large), ignoring\n", sc->stsz_sample_size);
3827  sc->stsz_sample_size = sc->sample_size;
3828  }
3829  if (sc->stsz_sample_size>0 && sc->stsz_sample_size < sc->sample_size) {
3830  av_log(mov->fc, AV_LOG_WARNING, "STSZ sample size %d invalid (too small), ignoring\n", sc->stsz_sample_size);
3831  sc->stsz_sample_size = sc->sample_size;
3832  }
3833 
3834  for (j = 0; j < sc->stsc_data[stsc_index].count; j++) {
3835  int keyframe = 0;
3836  if (current_sample >= sc->sample_count) {
3837  av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
3838  return;
3839  }
3840 
3841  if (!sc->keyframe_absent && (!sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index])) {
3842  keyframe = 1;
3843  if (stss_index + 1 < sc->keyframe_count)
3844  stss_index++;
3845  } else if (sc->stps_count && current_sample+key_off == sc->stps_data[stps_index]) {
3846  keyframe = 1;
3847  if (stps_index + 1 < sc->stps_count)
3848  stps_index++;
3849  }
3850  if (rap_group_present && rap_group_index < sc->rap_group_count) {
3851  if (sc->rap_group[rap_group_index].index > 0)
3852  keyframe = 1;
3853  if (++rap_group_sample == sc->rap_group[rap_group_index].count) {
3854  rap_group_sample = 0;
3855  rap_group_index++;
3856  }
3857  }
3858  if (sc->keyframe_absent
3859  && !sc->stps_count
3860  && !rap_group_present
3861  && (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO || (i==0 && j==0)))
3862  keyframe = 1;
3863  if (keyframe)
3864  distance = 0;
3865  sample_size = sc->stsz_sample_size > 0 ? sc->stsz_sample_size : sc->sample_sizes[current_sample];
3866  if (sc->pseudo_stream_id == -1 ||
3867  sc->stsc_data[stsc_index].id - 1 == sc->pseudo_stream_id) {
3868  AVIndexEntry *e;
3869  if (sample_size > 0x3FFFFFFF) {
3870  av_log(mov->fc, AV_LOG_ERROR, "Sample size %u is too large\n", sample_size);
3871  return;
3872  }
3873  e = &st->index_entries[st->nb_index_entries++];
3874  e->pos = current_offset;
3875  e->timestamp = current_dts;
3876  e->size = sample_size;
3877  e->min_distance = distance;
3878  e->flags = keyframe ? AVINDEX_KEYFRAME : 0;
3879  av_log(mov->fc, AV_LOG_TRACE, "AVIndex stream %d, sample %u, offset %"PRIx64", dts %"PRId64", "
3880  "size %u, distance %u, keyframe %d\n", st->index, current_sample,
3881  current_offset, current_dts, sample_size, distance, keyframe);
3882  if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && st->nb_index_entries < 100)
3883  ff_rfps_add_frame(mov->fc, st, current_dts);
3884  }
3885 
3886  current_offset += sample_size;
3887  stream_size += sample_size;
3888 
3889  /* A negative sample duration is invalid based on the spec,
3890  * but some samples need it to correct the DTS. */
3891  if (sc->stts_data[stts_index].duration < 0) {
3892  av_log(mov->fc, AV_LOG_WARNING,
3893  "Invalid SampleDelta %d in STTS, at %d st:%d\n",
3894  sc->stts_data[stts_index].duration, stts_index,
3895  st->index);
3896  dts_correction += sc->stts_data[stts_index].duration - 1;
3897  sc->stts_data[stts_index].duration = 1;
3898  }
3899  current_dts += sc->stts_data[stts_index].duration;
3900  if (!dts_correction || current_dts + dts_correction > last_dts) {
3901  current_dts += dts_correction;
3902  dts_correction = 0;
3903  } else {
3904  /* Avoid creating non-monotonous DTS */
3905  dts_correction += current_dts - last_dts - 1;
3906  current_dts = last_dts + 1;
3907  }
3908  last_dts = current_dts;
3909  distance++;
3910  stts_sample++;
3911  current_sample++;
3912  if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
3913  stts_sample = 0;
3914  stts_index++;
3915  }
3916  }
3917  }
3918  if (st->duration > 0)
3919  st->codecpar->bit_rate = stream_size*8*sc->time_scale/st->duration;
3920  } else {
3921  unsigned chunk_samples, total = 0;
3922 
3923  if (!sc->chunk_count)
3924  return;
3925 
3926  // compute total chunk count
3927  for (i = 0; i < sc->stsc_count; i++) {
3928  unsigned count, chunk_count;
3929 
3930  chunk_samples = sc->stsc_data[i].count;
3931  if (i != sc->stsc_count - 1 &&
3932  sc->samples_per_frame && chunk_samples % sc->samples_per_frame) {
3933  av_log(mov->fc, AV_LOG_ERROR, "error unaligned chunk\n");
3934  return;
3935  }
3936 
3937  if (sc->samples_per_frame >= 160) { // gsm
3938  count = chunk_samples / sc->samples_per_frame;
3939  } else if (sc->samples_per_frame > 1) {
3940  unsigned samples = (1024/sc->samples_per_frame)*sc->samples_per_frame;
3941  count = (chunk_samples+samples-1) / samples;
3942  } else {
3943  count = (chunk_samples+1023) / 1024;
3944  }
3945 
3946  if (mov_stsc_index_valid(i, sc->stsc_count))
3947  chunk_count = sc->stsc_data[i+1].first - sc->stsc_data[i].first;
3948  else
3949  chunk_count = sc->chunk_count - (sc->stsc_data[i].first - 1);
3950  total += chunk_count * count;
3951  }
3952 
3953  av_log(mov->fc, AV_LOG_TRACE, "chunk count %u\n", total);
3954  if (total >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries)
3955  return;
3957  st->nb_index_entries + total,
3958  sizeof(*st->index_entries)) < 0) {
3959  st->nb_index_entries = 0;
3960  return;
3961  }
3962  st->index_entries_allocated_size = (st->nb_index_entries + total) * sizeof(*st->index_entries);
3963 
3964  // populate index
3965  for (i = 0; i < sc->chunk_count; i++) {
3966  current_offset = sc->chunk_offsets[i];
3967  if (mov_stsc_index_valid(stsc_index, sc->stsc_count) &&
3968  i + 1 == sc->stsc_data[stsc_index + 1].first)
3969  stsc_index++;
3970  chunk_samples = sc->stsc_data[stsc_index].count;
3971 
3972  while (chunk_samples > 0) {
3973  AVIndexEntry *e;
3974  unsigned size, samples;
3975 
3976  if (sc->samples_per_frame > 1 && !sc->bytes_per_frame) {
3978  "Zero bytes per frame, but %d samples per frame",
3979  sc->samples_per_frame);
3980  return;
3981  }
3982 
3983  if (sc->samples_per_frame >= 160) { // gsm
3984  samples = sc->samples_per_frame;
3985  size = sc->bytes_per_frame;
3986  } else {
3987  if (sc->samples_per_frame > 1) {
3988  samples = FFMIN((1024 / sc->samples_per_frame)*
3989  sc->samples_per_frame, chunk_samples);
3990  size = (samples / sc->samples_per_frame) * sc->bytes_per_frame;
3991  } else {
3992  samples = FFMIN(1024, chunk_samples);
3993  size = samples * sc->sample_size;
3994  }
3995  }
3996 
3997  if (st->nb_index_entries >= total) {
3998  av_log(mov->fc, AV_LOG_ERROR, "wrong chunk count %u\n", total);
3999  return;
4000  }
4001  if (size > 0x3FFFFFFF) {
4002  av_log(mov->fc, AV_LOG_ERROR, "Sample size %u is too large\n", size);
4003  return;
4004  }
4005  e = &st->index_entries[st->nb_index_entries++];
4006  e->pos = current_offset;
4007  e->timestamp = current_dts;
4008  e->size = size;
4009  e->min_distance = 0;
4010  e->flags = AVINDEX_KEYFRAME;
4011  av_log(mov->fc, AV_LOG_TRACE, "AVIndex stream %d, chunk %u, offset %"PRIx64", dts %"PRId64", "
4012  "size %u, duration %u\n", st->index, i, current_offset, current_dts,
4013  size, samples);
4014 
4015  current_offset += size;
4016  current_dts += samples;
4017  chunk_samples -= samples;
4018  }
4019  }
4020  }
4021 
4022  if (!mov->ignore_editlist && mov->advanced_editlist) {
4023  // Fix index according to edit lists.
4024  mov_fix_index(mov, st);
4025  }
4026 
4027  // Update start time of the stream.
4029  st->start_time = st->index_entries[0].timestamp + sc->dts_shift;
4030  if (sc->ctts_data) {
4031  st->start_time += sc->ctts_data[0].duration;
4032  }
4033  }
4034 
4035  mov_estimate_video_delay(mov, st);
4036 }
4037 
4038 static int test_same_origin(const char *src, const char *ref) {
4039  char src_proto[64];
4040  char ref_proto[64];
4041  char src_auth[256];
4042  char ref_auth[256];
4043  char src_host[256];
4044  char ref_host[256];
4045  int src_port=-1;
4046  int ref_port=-1;
4047 
4048  av_url_split(src_proto, sizeof(src_proto), src_auth, sizeof(src_auth), src_host, sizeof(src_host), &src_port, NULL, 0, src);
4049  av_url_split(ref_proto, sizeof(ref_proto), ref_auth, sizeof(ref_auth), ref_host, sizeof(ref_host), &ref_port, NULL, 0, ref);
4050 
4051  if (strlen(src) == 0) {
4052  return -1;
4053  } else if (strlen(src_auth) + 1 >= sizeof(src_auth) ||
4054  strlen(ref_auth) + 1 >= sizeof(ref_auth) ||
4055  strlen(src_host) + 1 >= sizeof(src_host) ||
4056  strlen(ref_host) + 1 >= sizeof(ref_host)) {
4057  return 0;
4058  } else if (strcmp(src_proto, ref_proto) ||
4059  strcmp(src_auth, ref_auth) ||
4060  strcmp(src_host, ref_host) ||
4061  src_port != ref_port) {
4062  return 0;
4063  } else
4064  return 1;
4065 }
4066 
4067 static int mov_open_dref(MOVContext *c, AVIOContext **pb, const char *src, MOVDref *ref)
4068 {
4069  /* try relative path, we do not try the absolute because it can leak information about our
4070  system to an attacker */
4071  if (ref->nlvl_to > 0 && ref->nlvl_from > 0) {
4072  char filename[1025];
4073  const char *src_path;
4074  int i, l;
4075 
4076  /* find a source dir */
4077  src_path = strrchr(src, '/');
4078  if (src_path)
4079  src_path++;
4080  else
4081  src_path = src;
4082 
4083  /* find a next level down to target */
4084  for (i = 0, l = strlen(ref->path) - 1; l >= 0; l--)
4085  if (ref->path[l] == '/') {
4086  if (i == ref->nlvl_to - 1)
4087  break;
4088  else
4089  i++;
4090  }
4091 
4092  /* compose filename if next level down to target was found */
4093  if (i == ref->nlvl_to - 1 && src_path - src < sizeof(filename)) {
4094  memcpy(filename, src, src_path - src);
4095  filename[src_path - src] = 0;
4096 
4097  for (i = 1; i < ref->nlvl_from; i++)
4098  av_strlcat(filename, "../", sizeof(filename));
4099 
4100  av_strlcat(filename, ref->path + l + 1, sizeof(filename));
4101  if (!c->use_absolute_path) {
4102  int same_origin = test_same_origin(src, filename);
4103 
4104  if (!same_origin) {
4105  av_log(c->fc, AV_LOG_ERROR,
4106  "Reference with mismatching origin, %s not tried for security reasons, "
4107  "set demuxer option use_absolute_path to allow it anyway\n",
4108  ref->path);
4109  return AVERROR(ENOENT);
4110  }
4111 
4112  if(strstr(ref->path + l + 1, "..") ||
4113  strstr(ref->path + l + 1, ":") ||
4114  (ref->nlvl_from > 1 && same_origin < 0) ||
4115  (filename[0] == '/' && src_path == src))
4116  return AVERROR(ENOENT);
4117  }
4118 
4119  if (strlen(filename) + 1 == sizeof(filename))
4120  return AVERROR(ENOENT);
4121  if (!c->fc->io_open(c->fc, pb, filename, AVIO_FLAG_READ, NULL))
4122  return 0;
4123  }
4124  } else if (c->use_absolute_path) {
4125  av_log(c->fc, AV_LOG_WARNING, "Using absolute path on user request, "
4126  "this is a possible security issue\n");
4127  if (!c->fc->io_open(c->fc, pb, ref->path, AVIO_FLAG_READ, NULL))
4128  return 0;
4129  } else {
4130  av_log(c->fc, AV_LOG_ERROR,
4131  "Absolute path %s not tried for security reasons, "
4132  "set demuxer option use_absolute_path to allow absolute paths\n",
4133  ref->path);
4134  }
4135 
4136  return AVERROR(ENOENT);
4137 }
4138 
4140 {
4141  if (sc->time_scale <= 0) {
4142  av_log(c->fc, AV_LOG_WARNING, "stream %d, timescale not set\n", sc->ffindex);
4143  sc->time_scale = c->time_scale;
4144  if (sc->time_scale <= 0)
4145  sc->time_scale = 1;
4146  }
4147 }
4148 
4150 {
4151  AVStream *st;
4152  MOVStreamContext *sc;
4153  int ret;
4154 
4155  st = avformat_new_stream(c->fc, NULL);
4156  if (!st) return AVERROR(ENOMEM);
4157  st->id = c->fc->nb_streams;
4158  sc = av_mallocz(sizeof(MOVStreamContext));
4159  if (!sc) return AVERROR(ENOMEM);
4160 
4161  st->priv_data = sc;
4163  sc->ffindex = st->index;
4164  c->trak_index = st->index;
4165 
4166  if ((ret = mov_read_default(c, pb, atom)) < 0)
4167  return ret;
4168 
4169  c->trak_index = -1;
4170 
4171  /* sanity checks */
4172  if ((sc->chunk_count && (!sc->stts_count || !sc->stsc_count ||
4173  (!sc->sample_size && !sc->sample_count))) ||
4174  (!sc->chunk_count && sc->sample_count)) {
4175  av_log(c->fc, AV_LOG_ERROR, "stream %d, missing mandatory atoms, broken header\n",
4176  st->index);
4177  return 0;
4178  }
4179  if (sc->chunk_count && sc->stsc_count && sc->stsc_data[ sc->stsc_count - 1 ].first > sc->chunk_count) {
4180  av_log(c->fc, AV_LOG_ERROR, "stream %d, contradictionary STSC and STCO\n",
4181  st->index);
4182  return AVERROR_INVALIDDATA;
4183  }
4184 
4185  fix_timescale(c, sc);
4186 
4187  avpriv_set_pts_info(st, 64, 1, sc->time_scale);
4188 
4189  mov_build_index(c, st);
4190 
4191  if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) {
4192  MOVDref *dref = &sc->drefs[sc->dref_id - 1];
4193  if (c->enable_drefs) {
4194  if (mov_open_dref(c, &sc->pb, c->fc->url, dref) < 0)
4195  av_log(c->fc, AV_LOG_ERROR,
4196  "stream %d, error opening alias: path='%s', dir='%s', "
4197  "filename='%s', volume='%s', nlvl_from=%d, nlvl_to=%d\n",
4198  st->index, dref->path, dref->dir, dref->filename,
4199  dref->volume, dref->nlvl_from, dref->nlvl_to);
4200  } else {
4201  av_log(c->fc, AV_LOG_WARNING,
4202  "Skipped opening external track: "
4203  "stream %d, alias: path='%s', dir='%s', "
4204  "filename='%s', volume='%s', nlvl_from=%d, nlvl_to=%d."
4205  "Set enable_drefs to allow this.\n",
4206  st->index, dref->path, dref->dir, dref->filename,
4207  dref->volume, dref->nlvl_from, dref->nlvl_to);
4208  }
4209  } else {
4210  sc->pb = c->fc->pb;
4211  sc->pb_is_copied = 1;
4212  }
4213 
4214  if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
4215  if (!st->sample_aspect_ratio.num && st->codecpar->width && st->codecpar->height &&
4216  sc->height && sc->width &&
4217  (st->codecpar->width != sc->width || st->codecpar->height != sc->height)) {
4218  st->sample_aspect_ratio = av_d2q(((double)st->codecpar->height * sc->width) /
4219  ((double)st->codecpar->width * sc->height), INT_MAX);
4220  }
4221 
4222 #if FF_API_R_FRAME_RATE
4223  if (sc->stts_count == 1 || (sc->stts_count == 2 && sc->stts_data[1].count == 1))
4225  sc->time_scale, sc->stts_data[0].duration, INT_MAX);
4226 #endif
4227  }
4228 
4229  // done for ai5q, ai52, ai55, ai1q, ai12 and ai15.
4230  if (!st->codecpar->extradata_size && st->codecpar->codec_id == AV_CODEC_ID_H264 &&
4231  TAG_IS_AVCI(st->codecpar->codec_tag)) {
4232  ret = ff_generate_avci_extradata(st);
4233  if (ret < 0)
4234  return ret;
4235  }
4236 
4237  switch (st->codecpar->codec_id) {
4238 #if CONFIG_H261_DECODER
4239  case AV_CODEC_ID_H261:
4240 #endif
4241 #if CONFIG_H263_DECODER
4242  case AV_CODEC_ID_H263:
4243 #endif
4244 #if CONFIG_MPEG4_DECODER
4245  case AV_CODEC_ID_MPEG4:
4246 #endif
4247  st->codecpar->width = 0; /* let decoder init width/height */
4248  st->codecpar->height= 0;
4249  break;
4250  }
4251 
4252  // If the duration of the mp3 packets is not constant, then they could need a parser
4253  if (st->codecpar->codec_id == AV_CODEC_ID_MP3
4254  && sc->stts_count > 3
4255  && sc->stts_count*10 > st->nb_frames
4256  && sc->time_scale == st->codecpar->sample_rate) {
4258  }
4259  /* Do not need those anymore. */
4260  av_freep(&sc->chunk_offsets);
4261  av_freep(&sc->sample_sizes);
4262  av_freep(&sc->keyframes);
4263  av_freep(&sc->stts_data);
4264  av_freep(&sc->stps_data);
4265  av_freep(&sc->elst_data);
4266  av_freep(&sc->rap_group);
4267 
4268  return 0;
4269 }
4270 
4272 {
4273  int ret;
4274  c->itunes_metadata = 1;
4275  ret = mov_read_default(c, pb, atom);
4276  c->itunes_metadata = 0;
4277  return ret;
4278 }
4279 
4281 {
4282  uint32_t count;
4283  uint32_t i;
4284 
4285  if (atom.size < 8)
4286  return 0;
4287 
4288  avio_skip(pb, 4);
4289  count = avio_rb32(pb);
4290  if (count > UINT_MAX / sizeof(*c->meta_keys) - 1) {
4291  av_log(c->fc, AV_LOG_ERROR,
4292  "The 'keys' atom with the invalid key count: %"PRIu32"\n", count);
4293  return AVERROR_INVALIDDATA;
4294  }
4295 
4296  c->meta_keys_count = count + 1;
4297  c->meta_keys = av_mallocz(c->meta_keys_count * sizeof(*c->meta_keys));
4298  if (!c->meta_keys)
4299  return AVERROR(ENOMEM);
4300 
4301  for (i = 1; i <= count; ++i) {
4302  uint32_t key_size = avio_rb32(pb);
4303  uint32_t type = avio_rl32(pb);
4304  if (key_size < 8) {
4305  av_log(c->fc, AV_LOG_ERROR,
4306  "The key# %"PRIu32" in meta has invalid size:"
4307  "%"PRIu32"\n", i, key_size);
4308  return AVERROR_INVALIDDATA;
4309  }
4310  key_size -= 8;
4311  if (type != MKTAG('m','d','t','a')) {
4312  avio_skip(pb, key_size);
4313  }
4314  c->meta_keys[i] = av_mallocz(key_size + 1);
4315  if (!c->meta_keys[i])
4316  return AVERROR(ENOMEM);
4317  avio_read(pb, c->meta_keys[i], key_size);
4318  }
4319 
4320  return 0;
4321 }
4322 
4324 {
4325  int64_t end = avio_tell(pb) + atom.size;
4326  uint8_t *key = NULL, *val = NULL, *mean = NULL;
4327  int i;
4328  int ret = 0;
4329  AVStream *st;
4330  MOVStreamContext *sc;
4331 
4332  if (c->fc->nb_streams < 1)
4333  return 0;
4334  st = c->fc->streams[c->fc->nb_streams-1];
4335  sc = st->priv_data;
4336 
4337  for (i = 0; i < 3; i++) {
4338  uint8_t **p;
4339  uint32_t len, tag;
4340 
4341  if (end - avio_tell(pb) <= 12)
4342  break;
4343 
4344  len = avio_rb32(pb);
4345  tag = avio_rl32(pb);
4346  avio_skip(pb, 4); // flags
4347 
4348  if (len < 12 || len - 12 > end - avio_tell(pb))
4349  break;
4350  len -= 12;
4351 
4352  if (tag == MKTAG('m', 'e', 'a', 'n'))
4353  p = &mean;
4354  else if (tag == MKTAG('n', 'a', 'm', 'e'))
4355  p = &key;
4356  else if (tag == MKTAG('d', 'a', 't', 'a') && len > 4) {
4357  avio_skip(pb, 4);
4358  len -= 4;
4359  p = &val;
4360  } else
4361  break;
4362 
4363  *p = av_malloc(len + 1);
4364  if (!*p) {
4365  ret = AVERROR(ENOMEM);
4366  break;
4367  }
4368  ret = ffio_read_size(pb, *p, len);
4369  if (ret < 0) {
4370  av_freep(p);
4371  break;
4372  }
4373  (*p)[len] = 0;
4374  }
4375 
4376  if (mean && key && val) {
4377  if (strcmp(key, "iTunSMPB") == 0) {
4378  int priming, remainder, samples;
4379  if(sscanf(val, "%*X %X %X %X", &priming, &remainder, &samples) == 3){
4380  if(priming>0 && priming<16384)
4381  sc->start_pad = priming;
4382  }
4383  }
4384  if (strcmp(key, "cdec") != 0) {
4385  av_dict_set(&c->fc->metadata, key, val,
4387  key = val = NULL;
4388  }
4389  } else {
4390  av_log(c->fc, AV_LOG_VERBOSE,
4391  "Unhandled or malformed custom metadata of size %"PRId64"\n", atom.size);
4392  }
4393 
4394  avio_seek(pb, end, SEEK_SET);
4395  av_freep(&key);
4396  av_freep(&val);
4397  av_freep(&mean);
4398  return ret;
4399 }
4400 
4402 {
4403  while (atom.size > 8) {
4404  uint32_t tag = avio_rl32(pb);
4405  atom.size -= 4;
4406  if (tag == MKTAG('h','d','l','r')) {
4407  avio_seek(pb, -8, SEEK_CUR);
4408  atom.size += 8;
4409  return mov_read_default(c, pb, atom);
4410  }
4411  }
4412  return 0;
4413 }
4414 
4415 // return 1 when matrix is identity, 0 otherwise
4416 #define IS_MATRIX_IDENT(matrix) \
4417  ( (matrix)[0][0] == (1 << 16) && \
4418  (matrix)[1][1] == (1 << 16) && \
4419  (matrix)[2][2] == (1 << 30) && \
4420  !(matrix)[0][1] && !(matrix)[0][2] && \
4421  !(matrix)[1][0] && !(matrix)[1][2] && \
4422  !(matrix)[2][0] && !(matrix)[2][1])
4423 
4425 {
4426  int i, j, e;
4427  int width;
4428  int height;
4429  int display_matrix[3][3];
4430  int res_display_matrix[3][3] = { { 0 } };
4431  AVStream *st;
4432  MOVStreamContext *sc;
4433  int version;
4434  int flags;
4435 
4436  if (c->fc->nb_streams < 1)
4437  return 0;
4438  st = c->fc->streams[c->fc->nb_streams-1];
4439  sc = st->priv_data;
4440 
4441  version = avio_r8(pb);
4442  flags = avio_rb24(pb);
4444 
4445  if (version == 1) {
4446  avio_rb64(pb);
4447  avio_rb64(pb);
4448  } else {
4449  avio_rb32(pb); /* creation time */
4450  avio_rb32(pb); /* modification time */
4451  }
4452  st->id = (int)avio_rb32(pb); /* track id (NOT 0 !)*/
4453  avio_rb32(pb); /* reserved */
4454 
4455  /* highlevel (considering edits) duration in movie timebase */
4456  (version == 1) ? avio_rb64(pb) : avio_rb32(pb);
4457  avio_rb32(pb); /* reserved */
4458  avio_rb32(pb); /* reserved */
4459 
4460  avio_rb16(pb); /* layer */
4461  avio_rb16(pb); /* alternate group */
4462  avio_rb16(pb); /* volume */
4463  avio_rb16(pb); /* reserved */
4464 
4465  //read in the display matrix (outlined in ISO 14496-12, Section 6.2.2)
4466  // they're kept in fixed point format through all calculations
4467  // save u,v,z to store the whole matrix in the AV_PKT_DATA_DISPLAYMATRIX
4468  // side data, but the scale factor is not needed to calculate aspect ratio
4469  for (i = 0; i < 3; i++) {
4470  display_matrix[i][0] = avio_rb32(pb); // 16.16 fixed point
4471  display_matrix[i][1] = avio_rb32(pb); // 16.16 fixed point
4472  display_matrix[i][2] = avio_rb32(pb); // 2.30 fixed point
4473  }
4474 
4475  width = avio_rb32(pb); // 16.16 fixed point track width
4476  height = avio_rb32(pb); // 16.16 fixed point track height
4477  sc->width = width >> 16;
4478  sc->height = height >> 16;
4479 
4480  // apply the moov display matrix (after the tkhd one)
4481  for (i = 0; i < 3; i++) {
4482  const int sh[3] = { 16, 16, 30 };
4483  for (j = 0; j < 3; j++) {
4484  for (e = 0; e < 3; e++) {
4485  res_display_matrix[i][j] +=
4486  ((int64_t) display_matrix[i][e] *
4487  c->movie_display_matrix[e][j]) >> sh[e];
4488  }
4489  }
4490  }
4491 
4492  // save the matrix when it is not the default identity
4493  if (!IS_MATRIX_IDENT(res_display_matrix)) {
4494  double rotate;
4495 
4496  av_freep(&sc->display_matrix);
4497  sc->display_matrix = av_malloc(sizeof(int32_t) * 9);
4498  if (!sc->display_matrix)
4499  return AVERROR(ENOMEM);
4500 
4501  for (i = 0; i < 3; i++)
4502  for (j = 0; j < 3; j++)
4503  sc->display_matrix[i * 3 + j] = res_display_matrix[i][j];
4504 
4507  if (!isnan(rotate)) {
4508  char rotate_buf[64];
4509  rotate = -rotate;
4510  if (rotate < 0) // for backward compatibility
4511  rotate += 360;
4512  snprintf(rotate_buf, sizeof(rotate_buf), "%g", rotate);
4513  av_dict_set(&st->metadata, "rotate", rotate_buf, 0);
4514  }
4515 #endif
4516  }
4517 
4518  // transform the display width/height according to the matrix
4519  // to keep the same scale, use [width height 1<<16]
4520  if (width && height && sc->display_matrix) {
4521  double disp_transform[2];
4522 
4523  for (i = 0; i < 2; i++)
4524  disp_transform[i] = hypot(sc->display_matrix[0 + i],
4525  sc->display_matrix[3 + i]);
4526 
4527  if (disp_transform[0] > 0 && disp_transform[1] > 0 &&
4528  disp_transform[0] < (1<<24) && disp_transform[1] < (1<<24) &&
4529  fabs((disp_transform[0] / disp_transform[1]) - 1.0) > 0.01)
4531  disp_transform[0] / disp_transform[1],
4532  INT_MAX);
4533  }
4534  return 0;
4535 }
4536 
4538 {
4539  MOVFragment *frag = &c->fragment;
4540  MOVTrackExt *trex = NULL;
4541  int flags, track_id, i;
4542 
4543  avio_r8(pb); /* version */
4544  flags = avio_rb24(pb);
4545 
4546  track_id = avio_rb32(pb);
4547  if (!track_id)
4548  return AVERROR_INVALIDDATA;
4549  frag->track_id = track_id;
4550  set_frag_stream(&c->frag_index, track_id);
4551  for (i = 0; i < c->trex_count; i++)
4552  if (c->trex_data[i].track_id == frag->track_id) {
4553  trex = &c->trex_data[i];
4554  break;
4555  }
4556  if (!trex) {
4557  av_log(c->fc, AV_LOG_ERROR, "could not find corresponding trex\n");
4558  return AVERROR_INVALIDDATA;
4559  }
4560 
4563  frag->moof_offset : frag->implicit_offset;
4564  frag->stsd_id = flags & MOV_TFHD_STSD_ID ? avio_rb32(pb) : trex->stsd_id;
4565 
4566  frag->duration = flags & MOV_TFHD_DEFAULT_DURATION ?
4567  avio_rb32(pb) : trex->duration;
4568  frag->size = flags & MOV_TFHD_DEFAULT_SIZE ?
4569  avio_rb32(pb) : trex->size;
4570  frag->flags = flags & MOV_TFHD_DEFAULT_FLAGS ?
4571  avio_rb32(pb) : trex->flags;
4572  av_log(c->fc, AV_LOG_TRACE, "frag flags 0x%x\n", frag->flags);
4573 
4574  return 0;
4575 }
4576 
4578 {
4579  unsigned i, num;
4580  void *new_tracks;
4581 
4582  num = atom.size / 4;
4583  if (!(new_tracks = av_malloc_array(num, sizeof(int))))
4584  return AVERROR(ENOMEM);
4585 
4586  av_free(c->chapter_tracks);
4587  c->chapter_tracks = new_tracks;
4588  c->nb_chapter_tracks = num;
4589 
4590  for (i = 0; i < num && !pb->eof_reached; i++)
4591  c->chapter_tracks[i] = avio_rb32(pb);
4592 
4593  return 0;
4594 }
4595 
4597 {
4598  MOVTrackExt *trex;
4599  int err;
4600 
4601  if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data))
4602  return AVERROR_INVALIDDATA;
4603  if ((err = av_reallocp_array(&c->trex_data, c->trex_count + 1,
4604  sizeof(*c->trex_data))) < 0) {
4605  c->trex_count = 0;
4606  return err;
4607  }
4608 
4609  c->fc->duration = AV_NOPTS_VALUE; // the duration from mvhd is not representing the whole file when fragments are used.
4610 
4611  trex = &c->trex_data[c->trex_count++];
4612  avio_r8(pb); /* version */
4613  avio_rb24(pb); /* flags */
4614  trex->track_id = avio_rb32(pb);
4615  trex->stsd_id = avio_rb32(pb);
4616  trex->duration = avio_rb32(pb);
4617  trex->size = avio_rb32(pb);
4618  trex->flags = avio_rb32(pb);
4619  return 0;
4620 }
4621 
4623 {
4624  MOVFragment *frag = &c->fragment;
4625  AVStream *st = NULL;
4626  MOVStreamContext *sc;
4627  int version, i;
4628  MOVFragmentStreamInfo * frag_stream_info;
4629  int64_t base_media_decode_time;
4630 
4631  for (i = 0; i < c->fc->nb_streams; i++) {
4632  if (c->fc->streams[i]->id == frag->track_id) {
4633  st = c->fc->streams[i];
4634  break;
4635  }
4636  }
4637  if (!st) {
4638  av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %u\n", frag->track_id);
4639  return AVERROR_INVALIDDATA;
4640  }
4641  sc = st->priv_data;
4642  if (sc->pseudo_stream_id + 1 != frag->stsd_id && sc->pseudo_stream_id != -1)
4643  return 0;
4644  version = avio_r8(pb);
4645  avio_rb24(pb); /* flags */
4646  if (version) {
4647  base_media_decode_time = avio_rb64(pb);
4648  } else {
4649  base_media_decode_time = avio_rb32(pb);
4650  }
4651 
4652  frag_stream_info = get_current_frag_stream_info(&c->frag_index);
4653  if (frag_stream_info)
4654  frag_stream_info->tfdt_dts = base_media_decode_time;
4655  sc->track_end = base_media_decode_time;
4656 
4657  return 0;
4658 }
4659 
4661 {
4662  MOVFragment *frag = &c->fragment;
4663  AVStream *st = NULL;
4664  MOVStreamContext *sc;
4665  MOVStts *ctts_data;
4666  uint64_t offset;
4667  int64_t dts, pts = AV_NOPTS_VALUE;
4668  int data_offset = 0;
4669  unsigned entries, first_sample_flags = frag->flags;
4670  int flags, distance, i;
4671  int64_t prev_dts = AV_NOPTS_VALUE;
4672  int next_frag_index = -1, index_entry_pos;
4673  size_t requested_size;
4674  size_t old_ctts_allocated_size;
4675  AVIndexEntry *new_entries;
4676  MOVFragmentStreamInfo * frag_stream_info;
4677 
4678  for (i = 0; i < c->fc->nb_streams; i++) {
4679  if (c->fc->streams[i]->id == frag->track_id) {
4680  st = c->fc->streams[i];
4681  break;
4682  }
4683  }
4684  if (!st) {
4685  av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %u\n", frag->track_id);
4686  return AVERROR_INVALIDDATA;
4687  }
4688  sc = st->priv_data;
4689  if (sc->pseudo_stream_id+1 != frag->stsd_id && sc->pseudo_stream_id != -1)
4690  return 0;
4691 
4692  // Find the next frag_index index that has a valid index_entry for
4693  // the current track_id.
4694  //
4695  // A valid index_entry means the trun for the fragment was read
4696  // and it's samples are in index_entries at the given position.
4697  // New index entries will be inserted before the index_entry found.
4698  index_entry_pos = st->nb_index_entries;
4699  for (i = c->frag_index.current + 1; i < c->frag_index.nb_items; i++) {
4700  frag_stream_info = get_frag_stream_info(&c->frag_index, i, frag->track_id);
4701  if (frag_stream_info && frag_stream_info->index_entry >= 0) {
4702  next_frag_index = i;
4703  index_entry_pos = frag_stream_info->index_entry;
4704  break;
4705  }
4706  }
4707 
4708  avio_r8(pb); /* version */
4709  flags = avio_rb24(pb);
4710  entries = avio_rb32(pb);
4711  av_log(c->fc, AV_LOG_TRACE, "flags 0x%x entries %u\n", flags, entries);
4712 
4713  if ((uint64_t)entries+sc->ctts_count >= UINT_MAX/sizeof(*sc->ctts_data))
4714  return AVERROR_INVALIDDATA;
4715  if (flags & MOV_TRUN_DATA_OFFSET) data_offset = avio_rb32(pb);
4716  if (flags & MOV_TRUN_FIRST_SAMPLE_FLAGS) first_sample_flags = avio_rb32(pb);
4717 
4718  frag_stream_info = get_current_frag_stream_info(&c->frag_index);
4719  if (frag_stream_info)
4720  {
4721  if (frag_stream_info->first_tfra_pts != AV_NOPTS_VALUE &&
4723  pts = frag_stream_info->first_tfra_pts;
4724  av_log(c->fc, AV_LOG_DEBUG, "found mfra time %"PRId64
4725  ", using it for pts\n", pts);
4726  } else if (frag_stream_info->sidx_pts != AV_NOPTS_VALUE) {
4727  // FIXME: sidx earliest_presentation_time is *PTS*, s.b.
4728  // pts = frag_stream_info->sidx_pts;
4729  dts = frag_stream_info->sidx_pts - sc->time_offset;
4730  av_log(c->fc, AV_LOG_DEBUG, "found sidx time %"PRId64
4731  ", using it for pts\n", pts);
4732  } else if (frag_stream_info->tfdt_dts != AV_NOPTS_VALUE) {
4733  dts = frag_stream_info->tfdt_dts - sc->time_offset;
4734  av_log(c->fc, AV_LOG_DEBUG, "found tfdt time %"PRId64
4735  ", using it for dts\n", dts);
4736  } else {
4737  dts = sc->track_end - sc->time_offset;
4738  av_log(c->fc, AV_LOG_DEBUG, "found track end time %"PRId64
4739  ", using it for dts\n", dts);
4740  }
4741  } else {
4742  dts = sc->track_end - sc->time_offset;
4743  av_log(c->fc, AV_LOG_DEBUG, "found track end time %"PRId64
4744  ", using it for dts\n", dts);
4745  }
4746  offset = frag->base_data_offset + data_offset;
4747  distance = 0;
4748  av_log(c->fc, AV_LOG_TRACE, "first sample flags 0x%x\n", first_sample_flags);
4749 
4750  // realloc space for new index entries
4751  if((unsigned)st->nb_index_entries + entries >= UINT_MAX / sizeof(AVIndexEntry)) {
4752  entries = UINT_MAX / sizeof(AVIndexEntry) - st->nb_index_entries;
4753  av_log(c->fc, AV_LOG_ERROR, "Failed to add index entry\n");
4754  }
4755  if (entries <= 0)
4756  return -1;
4757 
4758  requested_size = (st->nb_index_entries + entries) * sizeof(AVIndexEntry);
4759  new_entries = av_fast_realloc(st->index_entries,
4761  requested_size);
4762  if(!new_entries)
4763  return AVERROR(ENOMEM);
4764  st->index_entries= new_entries;
4765 
4766  requested_size = (st->nb_index_entries + entries) * sizeof(*sc->ctts_data);
4767  old_ctts_allocated_size = sc->ctts_allocated_size;
4768  ctts_data = av_fast_realloc(sc->ctts_data, &sc->ctts_allocated_size,
4769  requested_size);
4770  if (!ctts_data)
4771  return AVERROR(ENOMEM);
4772  sc->ctts_data = ctts_data;
4773 
4774  // In case there were samples without ctts entries, ensure they get
4775  // zero valued entries. This ensures clips which mix boxes with and
4776  // without ctts entries don't pickup uninitialized data.
4777  memset((uint8_t*)(sc->ctts_data) + old_ctts_allocated_size, 0,
4778  sc->ctts_allocated_size - old_ctts_allocated_size);
4779 
4780  if (index_entry_pos < st->nb_index_entries) {
4781  // Make hole in index_entries and ctts_data for new samples
4782  memmove(st->index_entries + index_entry_pos + entries,
4783  st->index_entries + index_entry_pos,
4784  sizeof(*st->index_entries) *
4785  (st->nb_index_entries - index_entry_pos));
4786  memmove(sc->ctts_data + index_entry_pos + entries,
4787  sc->ctts_data + index_entry_pos,
4788  sizeof(*sc->ctts_data) * (sc->ctts_count - index_entry_pos));
4789  if (index_entry_pos < sc->current_sample) {
4790  sc->current_sample += entries;
4791  }
4792  }
4793 
4794  st->nb_index_entries += entries;
4795  sc->ctts_count = st->nb_index_entries;
4796 
4797  // Record the index_entry position in frag_index of this fragment
4798  if (frag_stream_info)
4799  frag_stream_info->index_entry = index_entry_pos;
4800 
4801  if (index_entry_pos > 0)
4802  prev_dts = st->index_entries[index_entry_pos-1].timestamp;
4803 
4804  for (i = 0; i < entries && !pb->eof_reached; i++) {
4805  unsigned sample_size = frag->size;
4806  int sample_flags = i ? frag->flags : first_sample_flags;
4807  unsigned sample_duration = frag->duration;
4808  unsigned ctts_duration = 0;
4809  int keyframe = 0;
4810  int index_entry_flags = 0;
4811 
4812  if (flags & MOV_TRUN_SAMPLE_DURATION) sample_duration = avio_rb32(pb);
4813  if (flags & MOV_TRUN_SAMPLE_SIZE) sample_size = avio_rb32(pb);
4814  if (flags & MOV_TRUN_SAMPLE_FLAGS) sample_flags = avio_rb32(pb);
4815  if (flags & MOV_TRUN_SAMPLE_CTS) ctts_duration = avio_rb32(pb);
4816 
4817  mov_update_dts_shift(sc, ctts_duration);
4818  if (pts != AV_NOPTS_VALUE) {
4819  dts = pts - sc->dts_shift;
4820  if (flags & MOV_TRUN_SAMPLE_CTS) {
4821  dts -= ctts_duration;
4822  } else {
4823  dts -= sc->time_offset;
4824  }
4825  av_log(c->fc, AV_LOG_DEBUG,
4826  "pts %"PRId64" calculated dts %"PRId64
4827  " sc->dts_shift %d ctts.duration %d"
4828  " sc->time_offset %"PRId64
4829  " flags & MOV_TRUN_SAMPLE_CTS %d\n",
4830  pts, dts,
4831  sc->dts_shift, ctts_duration,
4832  sc->time_offset, flags & MOV_TRUN_SAMPLE_CTS);
4833  pts = AV_NOPTS_VALUE;
4834  }
4835 
4837  keyframe = 1;
4838  else
4839  keyframe =
4840  !(sample_flags & (MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC |
4842  if (keyframe) {
4843  distance = 0;
4844  index_entry_flags |= AVINDEX_KEYFRAME;
4845  }
4846  // Fragments can overlap in time. Discard overlapping frames after
4847  // decoding.
4848  if (prev_dts >= dts)
4849  index_entry_flags |= AVINDEX_DISCARD_FRAME;
4850 
4851  st->index_entries[index_entry_pos].pos = offset;
4852  st->index_entries[index_entry_pos].timestamp = dts;
4853  st->index_entries[index_entry_pos].size= sample_size;
4854  st->index_entries[index_entry_pos].min_distance= distance;
4855  st->index_entries[index_entry_pos].flags = index_entry_flags;
4856 
4857  sc->ctts_data[index_entry_pos].count = 1;
4858  sc->ctts_data[index_entry_pos].duration = ctts_duration;
4859  index_entry_pos++;
4860 
4861  av_log(c->fc, AV_LOG_TRACE, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
4862  "size %u, distance %d, keyframe %d\n", st->index,
4863  index_entry_pos, offset, dts, sample_size, distance, keyframe);
4864  distance++;
4865  dts += sample_duration;
4866  offset += sample_size;
4867  sc->data_size += sample_size;
4868 
4869  if (sample_duration <= INT64_MAX - sc->duration_for_fps &&
4870  1 <= INT64_MAX - sc->nb_frames_for_fps
4871  ) {
4872  sc->duration_for_fps += sample_duration;
4873  sc->nb_frames_for_fps ++;
4874  }
4875  }
4876  if (i < entries) {
4877  // EOF found before reading all entries. Fix the hole this would
4878  // leave in index_entries and ctts_data
4879  int gap = entries - i;
4880  memmove(st->index_entries + index_entry_pos,
4881  st->index_entries + index_entry_pos + gap,
4882  sizeof(*st->index_entries) *
4883  (st->nb_index_entries - (index_entry_pos + gap)));
4884  memmove(sc->ctts_data + index_entry_pos,
4885  sc->ctts_data + index_entry_pos + gap,
4886  sizeof(*sc->ctts_data) *
4887  (sc->ctts_count - (index_entry_pos + gap)));
4888 
4889  st->nb_index_entries -= gap;
4890  sc->ctts_count -= gap;
4891  if (index_entry_pos < sc->current_sample) {
4892  sc->current_sample -= gap;
4893  }
4894  entries = i;
4895  }
4896 
4897  // The end of this new fragment may overlap in time with the start
4898  // of the next fragment in index_entries. Mark the samples in the next
4899  // fragment that overlap with AVINDEX_DISCARD_FRAME
4900  prev_dts = AV_NOPTS_VALUE;
4901  if (index_entry_pos > 0)
4902  prev_dts = st->index_entries[index_entry_pos-1].timestamp;
4903  for (i = index_entry_pos; i < st->nb_index_entries; i++) {
4904  if (prev_dts < st->index_entries[i].timestamp)
4905  break;
4907  }
4908 
4909  // If a hole was created to insert the new index_entries into,
4910  // the index_entry recorded for all subsequent moof must
4911  // be incremented by the number of entries inserted.
4912  fix_frag_index_entries(&c->frag_index, next_frag_index,
4913  frag->track_id, entries);
4914 
4915  if (pb->eof_reached) {
4916  av_log(c->fc, AV_LOG_WARNING, "reached eof, corrupted TRUN atom\n");
4917  return AVERROR_EOF;
4918  }
4919 
4920  frag->implicit_offset = offset;
4921 
4922  sc->track_end = dts + sc->time_offset;
4923  if (st->duration < sc->track_end)
4924  st->duration = sc->track_end;
4925 
4926  return 0;
4927 }
4928 
4930 {
4931  int64_t offset = avio_tell(pb) + atom.size, pts, timestamp;
4932  uint8_t version;
4933  unsigned i, j, track_id, item_count;
4934  AVStream *st = NULL;
4935  AVStream *ref_st = NULL;
4936  MOVStreamContext *sc, *ref_sc = NULL;
4937  AVRational timescale;
4938 
4939  version = avio_r8(pb);
4940  if (version > 1) {
4941  avpriv_request_sample(c->fc, "sidx version %u", version);
4942  return 0;
4943  }
4944 
4945  avio_rb24(pb); // flags
4946 
4947  track_id = avio_rb32(pb); // Reference ID
4948  for (i = 0; i < c->fc->nb_streams; i++) {
4949  if (c->fc->streams[i]->id == track_id) {
4950  st = c->fc->streams[i];
4951  break;
4952  }
4953  }
4954  if (!st) {
4955  av_log(c->fc, AV_LOG_WARNING, "could not find corresponding track id %d\n", track_id);
4956  return 0;
4957  }
4958 
4959  sc = st->priv_data;
4960 
4961  timescale = av_make_q(1, avio_rb32(pb));
4962 
4963  if (timescale.den <= 0) {
4964  av_log(c->fc, AV_LOG_ERROR, "Invalid sidx timescale 1/%d\n", timescale.den);
4965  return AVERROR_INVALIDDATA;
4966  }
4967 
4968  if (version == 0) {
4969  pts = avio_rb32(pb);
4970  offset += avio_rb32(pb);
4971  } else {
4972  pts = avio_rb64(pb);
4973  offset += avio_rb64(pb);
4974  }
4975 
4976  avio_rb16(pb); // reserved
4977 
4978  item_count = avio_rb16(pb);
4979 
4980  for (i = 0; i < item_count; i++) {
4981  int index;
4982  MOVFragmentStreamInfo * frag_stream_info;
4983  uint32_t size = avio_rb32(pb);
4984  uint32_t duration = avio_rb32(pb);
4985  if (size & 0x80000000) {
4986  avpriv_request_sample(c->fc, "sidx reference_type 1");
4987  return AVERROR_PATCHWELCOME;
4988  }
4989  avio_rb32(pb); // sap_flags
4990  timestamp = av_rescale_q(pts, st->time_base, timescale);
4991 
4992  index = update_frag_index(c, offset);
4993  frag_stream_info = get_frag_stream_info(&c->frag_index, index, track_id);
4994  if (frag_stream_info)
4995  frag_stream_info->sidx_pts = timestamp;
4996 
4997  offset += size;
4998  pts += duration;
4999  }
5000 
5001  st->duration = sc->track_end = pts;
5002 
5003  sc->has_sidx = 1;
5004 
5005  if (offset == avio_size(pb)) {
5006  // Find first entry in fragment index that came from an sidx.
5007  // This will pretty much always be the first entry.
5008  for (i = 0; i < c->frag_index.nb_items; i++) {
5009  MOVFragmentIndexItem * item = &c->frag_index.item[i];
5010  for (j = 0; ref_st == NULL && j < item->nb_stream_info; j++) {
5011  MOVFragmentStreamInfo * si;
5012  si = &item->stream_info[j];
5013  if (si->sidx_pts != AV_NOPTS_VALUE) {
5014  ref_st = c->fc->streams[j];
5015  ref_sc = ref_st->priv_data;
5016  break;
5017  }
5018  }
5019  }
5020  for (i = 0; i < c->fc->nb_streams; i++) {
5021  st = c->fc->streams[i];
5022  sc = st->priv_data;
5023  if (!sc->has_sidx) {
5024  st->duration = sc->track_end = av_rescale(ref_st->duration, sc->time_scale, ref_sc->time_scale);
5025  }
5026  }
5027 
5028  c->frag_index.complete = 1;
5029  }
5030 
5031  return 0;
5032 }
5033 
5034 /* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
5035 /* like the files created with Adobe Premiere 5.0, for samples see */
5036 /* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
5038 {
5039  int err;
5040 
5041  if (atom.size < 8)
5042  return 0; /* continue */
5043  if (avio_rb32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
5044  avio_skip(pb, atom.size - 4);
5045  return 0;
5046  }
5047  atom.type = avio_rl32(pb);
5048  atom.size -= 8;
5049  if (atom.type != MKTAG('m','d','a','t')) {
5050  avio_skip(pb, atom.size);
5051  return 0;
5052  }
5053  err = mov_read_mdat(c, pb, atom);
5054  return err;
5055 }
5056 
5058 {
5059 #if CONFIG_ZLIB
5060  AVIOContext ctx;
5061  uint8_t *cmov_data;
5062  uint8_t *moov_data; /* uncompressed data */
5063  long cmov_len, moov_len;
5064  int ret = -1;
5065 
5066  avio_rb32(pb); /* dcom atom */
5067  if (avio_rl32(pb) != MKTAG('d','c','o','m'))
5068  return AVERROR_INVALIDDATA;
5069  if (avio_rl32(pb) != MKTAG('z','l','i','b')) {
5070  av_log(c->fc, AV_LOG_ERROR, "unknown compression for cmov atom !\n");
5071  return AVERROR_INVALIDDATA;
5072  }
5073  avio_rb32(pb); /* cmvd atom */
5074  if (avio_rl32(pb) != MKTAG('c','m','v','d'))
5075  return AVERROR_INVALIDDATA;
5076  moov_len = avio_rb32(pb); /* uncompressed size */
5077  cmov_len = atom.size - 6 * 4;
5078 
5079  cmov_data = av_malloc(cmov_len);
5080  if (!cmov_data)
5081  return AVERROR(ENOMEM);
5082  moov_data = av_malloc(moov_len);
5083  if (!moov_data) {
5084  av_free(cmov_data);
5085  return AVERROR(ENOMEM);
5086  }
5087  ret = ffio_read_size(pb, cmov_data, cmov_len);
5088  if (ret < 0)
5089  goto free_and_return;
5090 
5091  ret = AVERROR_INVALIDDATA;
5092  if (uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
5093  goto free_and_return;
5094  if (ffio_init_context(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
5095  goto free_and_return;
5097  atom.type = MKTAG('m','o','o','v');
5098  atom.size = moov_len;
5099  ret = mov_read_default(c, &ctx, atom);
5100 free_and_return:
5101  av_free(moov_data);
5102  av_free(cmov_data);
5103  return ret;
5104 #else
5105  av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
5106  return AVERROR(ENOSYS);
5107 #endif
5108 }
5109 
5110 /* edit list atom */
5112 {
5113  MOVStreamContext *sc;
5114  int i, edit_count, version;
5115  int64_t elst_entry_size;
5116 
5117  if (c->fc->nb_streams < 1 || c->ignore_editlist)
5118  return 0;
5119  sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
5120 
5121  version = avio_r8(pb); /* version */
5122  avio_rb24(pb); /* flags */
5123  edit_count = avio_rb32(pb); /* entries */
5124  atom.size -= 8;
5125 
5126  elst_entry_size = version == 1 ? 20 : 12;
5127  if (atom.size != edit_count * elst_entry_size) {
5129  av_log(c->fc, AV_LOG_ERROR, "Invalid edit list entry_count: %d for elst atom of size: %"PRId64" bytes.\n",
5130  edit_count, atom.size + 8);
5131  return AVERROR_INVALIDDATA;
5132  } else {
5133  edit_count = atom.size / elst_entry_size;
5134  if (edit_count * elst_entry_size != atom.size) {
5135  av_log(c->fc, AV_LOG_WARNING, "ELST atom of %"PRId64" bytes, bigger than %d entries.", atom.size, edit_count);
5136  }
5137  }
5138  }
5139 
5140  if (!edit_count)
5141  return 0;
5142  if (sc->elst_data)
5143  av_log(c->fc, AV_LOG_WARNING, "Duplicated ELST atom\n");
5144  av_free(sc->elst_data);
5145  sc->elst_count = 0;
5146  sc->elst_data = av_malloc_array(edit_count, sizeof(*sc->elst_data));
5147  if (!sc->elst_data)
5148  return AVERROR(ENOMEM);
5149 
5150  av_log(c->fc, AV_LOG_TRACE, "track[%u].edit_count = %i\n", c->fc->nb_streams - 1, edit_count);
5151  for (i = 0; i < edit_count && atom.size > 0 && !pb->eof_reached; i++) {
5152  MOVElst *e = &sc->elst_data[i];
5153 
5154  if (version == 1) {
5155  e->duration = avio_rb64(pb);
5156  e->time = avio_rb64(pb);
5157  atom.size -= 16;
5158  } else {
5159  e->duration = avio_rb32(pb); /* segment duration */
5160  e->time = (int32_t)avio_rb32(pb); /* media time */
5161  atom.size -= 8;
5162  }
5163  e->rate = avio_rb32(pb) / 65536.0;
5164  atom.size -= 4;
5165  av_log(c->fc, AV_LOG_TRACE, "duration=%"PRId64" time=%"PRId64" rate=%f\n",
5166  e->duration, e->time, e->rate);
5167 
5168  if (e->time < 0 && e->time != -1 &&
5170  av_log(c->fc, AV_LOG_ERROR, "Track %d, edit %d: Invalid edit list media time=%"PRId64"\n",
5171  c->fc->nb_streams-1, i, e->time);
5172  return AVERROR_INVALIDDATA;
5173  }
5174  }
5175  sc->elst_count = i;
5176 
5177  return 0;
5178 }
5179 
5181 {
5182  MOVStreamContext *sc;
5183 
5184  if (c->fc->nb_streams < 1)
5185  return AVERROR_INVALIDDATA;
5186  sc = c->fc->streams[c->fc->nb_streams - 1]->priv_data;
5187  sc->timecode_track = avio_rb32(pb);
5188  return 0;
5189 }
5190 
5192 {
5193  AVStream *st;
5194  int ret;
5195 
5196  if (c->fc->nb_streams < 1)
5197  return 0;
5198  st = c->fc->streams[c->fc->nb_streams - 1];
5199 
5200  if (atom.size < 4) {
5201  av_log(c->fc, AV_LOG_ERROR, "Empty AV1 Codec Configuration Box\n");
5202  return AVERROR_INVALIDDATA;
5203  }
5204 
5205  /* For now, propagate only the OBUs, if any. Once libavcodec is
5206  updated to handle isobmff style extradata this can be removed. */
5207  avio_skip(pb, 4);
5208 
5209  if (atom.size == 4)
5210  return 0;
5211 
5212  ret = ff_get_extradata(c->fc, st->codecpar, pb, atom.size - 4);
5213  if (ret < 0)
5214  return ret;
5215 
5216  return 0;
5217 }
5218 
5220 {
5221  AVStream *st;
5222  int version, color_range, color_primaries, color_trc, color_space;
5223 
5224  if (c->fc->nb_streams < 1)
5225  return 0;
5226  st = c->fc->streams[c->fc->nb_streams - 1];
5227 
5228  if (atom.size < 5) {
5229  av_log(c->fc, AV_LOG_ERROR, "Empty VP Codec Configuration box\n");
5230  return AVERROR_INVALIDDATA;
5231  }
5232 
5233  version = avio_r8(pb);
5234  if (version != 1) {
5235  av_log(c->fc, AV_LOG_WARNING, "Unsupported VP Codec Configuration box version %d\n", version);
5236  return 0;
5237  }
5238  avio_skip(pb, 3); /* flags */
5239 
5240  avio_skip(pb, 2); /* profile + level */
5241  color_range = avio_r8(pb); /* bitDepth, chromaSubsampling, videoFullRangeFlag */
5242  color_primaries = avio_r8(pb);
5243  color_trc = avio_r8(pb);
5244  color_space = avio_r8(pb);
5245  if (avio_rb16(pb)) /* codecIntializationDataSize */
5246  return AVERROR_INVALIDDATA;
5247 
5248  if (!av_color_primaries_name(color_primaries))
5249  color_primaries = AVCOL_PRI_UNSPECIFIED;
5250  if (!av_color_transfer_name(color_trc))
5251  color_trc = AVCOL_TRC_UNSPECIFIED;
5252  if (!av_color_space_name(color_space))
5253  color_space = AVCOL_SPC_UNSPECIFIED;
5254 
5255  st->codecpar->color_range = (color_range & 1) ? AVCOL_RANGE_JPEG : AVCOL_RANGE_MPEG;
5257  st->codecpar->color_trc = color_trc;
5258  st->codecpar->color_space = color_space;
5259 
5260  return 0;
5261 }
5262 
5264 {
5265  MOVStreamContext *sc;
5266  const int chroma_den = 50000;
5267  const int luma_den = 10000;
5268  int i, j, version;
5269 
5270  if (c->fc->nb_streams < 1)
5271  return AVERROR_INVALIDDATA;
5272 
5273  sc = c->fc->streams[c->fc->nb_streams - 1]->priv_data;
5274 
5275  if (atom.size < 5) {
5276  av_log(c->fc, AV_LOG_ERROR, "Empty Mastering Display Metadata box\n");
5277  return AVERROR_INVALIDDATA;
5278  }
5279 
5280  version = avio_r8(pb);
5281  if (version) {
5282  av_log(c->fc, AV_LOG_WARNING, "Unsupported Mastering Display Metadata box version %d\n", version);
5283  return 0;
5284  }
5285  avio_skip(pb, 3); /* flags */
5286 
5288  if (!sc->mastering)
5289  return AVERROR(ENOMEM);
5290 
5291  for (i = 0; i < 3; i++)
5292  for (j = 0; j < 2; j++)
5293  sc->mastering->display_primaries[i][j] =
5294  av_make_q(lrint(((double)avio_rb16(pb) / (1 << 16)) * chroma_den), chroma_den);
5295  for (i = 0; i < 2; i++)
5296  sc->mastering->white_point[i] =
5297  av_make_q(lrint(((double)avio_rb16(pb) / (1 << 16)) * chroma_den), chroma_den);
5298  sc->mastering->max_luminance =
5299  av_make_q(lrint(((double)avio_rb32(pb) / (1 << 8)) * luma_den), luma_den);
5300  sc->mastering->min_luminance =
5301  av_make_q(lrint(((double)avio_rb32(pb) / (1 << 14)) * luma_den), luma_den);
5302 
5303  sc->mastering->has_primaries = 1;
5304  sc->mastering->has_luminance = 1;
5305 
5306  return 0;
5307 }
5308 
5310 {
5311  MOVStreamContext *sc;
5312  const int mapping[3] = {1, 2, 0};
5313  const int chroma_den = 50000;
5314  const int luma_den = 10000;
5315  int i;
5316 
5317  if (c->fc->nb_streams < 1)
5318  return AVERROR_INVALIDDATA;
5319 
5320  sc = c->fc->streams[c->fc->nb_streams - 1]->priv_data;
5321 
5322  if (atom.size < 24) {
5323  av_log(c->fc, AV_LOG_ERROR, "Invalid Mastering Display Color Volume box\n");
5324  return AVERROR_INVALIDDATA;
5325  }
5326 
5328  if (!sc->mastering)
5329  return AVERROR(ENOMEM);
5330 
5331  for (i = 0; i < 3; i++) {
5332  const int j = mapping[i];
5333  sc->mastering->display_primaries[j][0] = av_make_q(avio_rb16(pb), chroma_den);
5334  sc->mastering->display_primaries[j][1] = av_make_q(avio_rb16(pb), chroma_den);
5335  }
5336  sc->mastering->white_point[0] = av_make_q(avio_rb16(pb), chroma_den);
5337  sc->mastering->white_point[1] = av_make_q(avio_rb16(pb), chroma_den);
5338 
5339  sc->mastering->max_luminance = av_make_q(avio_rb32(pb), luma_den);
5340  sc->mastering->min_luminance = av_make_q(avio_rb32(pb), luma_den);
5341 
5342  sc->mastering->has_luminance = 1;
5343  sc->mastering->has_primaries = 1;
5344 
5345  return 0;
5346 }
5347 
5349 {
5350  MOVStreamContext *sc;
5351  int version;
5352 
5353  if (c->fc->nb_streams < 1)
5354  return AVERROR_INVALIDDATA;
5355 
5356  sc = c->fc->streams[c->fc->nb_streams - 1]->priv_data;
5357 
5358  if (atom.size < 5) {
5359  av_log(c->fc, AV_LOG_ERROR, "Empty Content Light Level box\n");
5360  return AVERROR_INVALIDDATA;
5361  }
5362 
5363  version = avio_r8(pb);
5364  if (version) {
5365  av_log(c->fc, AV_LOG_WARNING, "Unsupported Content Light Level box version %d\n", version);
5366  return 0;
5367  }
5368  avio_skip(pb, 3); /* flags */
5369 
5371  if (!sc->coll)
5372  return AVERROR(ENOMEM);
5373 
5374  sc->coll->MaxCLL = avio_rb16(pb);
5375  sc->coll->MaxFALL = avio_rb16(pb);
5376 
5377  return 0;
5378 }
5379 
5381 {
5382  MOVStreamContext *sc;
5383 
5384  if (c->fc->nb_streams < 1)
5385  return AVERROR_INVALIDDATA;
5386 
5387  sc = c->fc->streams[c->fc->nb_streams - 1]->priv_data;
5388 
5389  if (atom.size < 4) {
5390  av_log(c->fc, AV_LOG_ERROR, "Empty Content Light Level Info box\n");
5391  return AVERROR_INVALIDDATA;
5392  }
5393 
5395  if (!sc->coll)
5396  return AVERROR(ENOMEM);
5397 
5398  sc->coll->MaxCLL = avio_rb16(pb);
5399  sc->coll->MaxFALL = avio_rb16(pb);
5400 
5401  return 0;
5402 }
5403 
5405 {
5406  AVStream *st;
5407  MOVStreamContext *sc;
5408  enum AVStereo3DType type;
5409  int mode;
5410 
5411  if (c->fc->nb_streams < 1)
5412  return 0;
5413 
5414  st = c->fc->streams[c->fc->nb_streams - 1];
5415  sc = st->priv_data;
5416 
5417  if (atom.size < 5) {
5418  av_log(c->fc, AV_LOG_ERROR, "Empty stereoscopic video box\n");
5419  return AVERROR_INVALIDDATA;
5420  }
5421  avio_skip(pb, 4); /* version + flags */
5422 
5423  mode = avio_r8(pb);
5424  switch (mode) {
5425  case 0:
5426  type = AV_STEREO3D_2D;
5427  break;
5428  case 1:
5429  type = AV_STEREO3D_TOPBOTTOM;
5430  break;
5431  case 2:
5432  type = AV_STEREO3D_SIDEBYSIDE;
5433  break;
5434  default:
5435  av_log(c->fc, AV_LOG_WARNING, "Unknown st3d mode value %d\n", mode);
5436  return 0;
5437  }
5438 
5439  sc->stereo3d = av_stereo3d_alloc();
5440  if (!sc->stereo3d)
5441  return AVERROR(ENOMEM);
5442 
5443  sc->stereo3d->type = type;
5444  return 0;
5445 }
5446 
5448 {
5449  AVStream *st;
5450  MOVStreamContext *sc;
5451  int size, version, layout;
5452  int32_t yaw, pitch, roll;
5453  uint32_t l = 0, t = 0, r = 0, b = 0;
5454  uint32_t tag, padding = 0;
5455  enum AVSphericalProjection projection;
5456 
5457  if (c->fc->nb_streams < 1)
5458  return 0;
5459 
5460  st = c->fc->streams[c->fc->nb_streams - 1];
5461  sc = st->priv_data;
5462 
5463  if (atom.size < 8) {
5464  av_log(c->fc, AV_LOG_ERROR, "Empty spherical video box\n");
5465  return AVERROR_INVALIDDATA;
5466  }
5467 
5468  size = avio_rb32(pb);
5469  if (size <= 12 || size > atom.size)
5470  return AVERROR_INVALIDDATA;
5471 
5472  tag = avio_rl32(pb);
5473  if (tag != MKTAG('s','v','h','d')) {
5474  av_log(c->fc, AV_LOG_ERROR, "Missing spherical video header\n");
5475  return 0;
5476  }
5477  version = avio_r8(pb);
5478  if (version != 0) {
5479  av_log(c->fc, AV_LOG_WARNING, "Unknown spherical version %d\n",
5480  version);
5481  return 0;
5482  }
5483  avio_skip(pb, 3); /* flags */
5484  avio_skip(pb, size - 12); /* metadata_source */
5485 
5486  size = avio_rb32(pb);
5487  if (size > atom.size)
5488  return AVERROR_INVALIDDATA;
5489 
5490  tag = avio_rl32(pb);
5491  if (tag != MKTAG('p','r','o','j')) {
5492  av_log(c->fc, AV_LOG_ERROR, "Missing projection box\n");
5493  return 0;
5494  }
5495 
5496  size = avio_rb32(pb);
5497  if (size > atom.size)
5498  return AVERROR_INVALIDDATA;
5499 
5500  tag = avio_rl32(pb);
5501  if (tag != MKTAG('p','r','h','d')) {
5502  av_log(c->fc, AV_LOG_ERROR, "Missing projection header box\n");
5503  return 0;
5504  }
5505  version = avio_r8(pb);
5506  if (version != 0) {
5507  av_log(c->fc, AV_LOG_WARNING, "Unknown spherical version %d\n",
5508  version);
5509  return 0;
5510  }
5511  avio_skip(pb, 3); /* flags */
5512 
5513  /* 16.16 fixed point */
5514  yaw = avio_rb32(pb);
5515  pitch = avio_rb32(pb);
5516  roll = avio_rb32(pb);
5517 
5518  size = avio_rb32(pb);
5519  if (size > atom.size)
5520  return AVERROR_INVALIDDATA;
5521 
5522  tag = avio_rl32(pb);
5523  version = avio_r8(pb);
5524  if (version != 0) {
5525  av_log(c->fc, AV_LOG_WARNING, "Unknown spherical version %d\n",
5526  version);
5527  return 0;
5528  }
5529  avio_skip(pb, 3); /* flags */
5530  switch (tag) {
5531  case MKTAG('c','b','m','p'):
5532  layout = avio_rb32(pb);
5533  if (layout) {
5534  av_log(c->fc, AV_LOG_WARNING,
5535  "Unsupported cubemap layout %d\n", layout);
5536  return 0;
5537  }
5538  projection = AV_SPHERICAL_CUBEMAP;
5539  padding = avio_rb32(pb);
5540  break;
5541  case MKTAG('e','q','u','i'):
5542  t = avio_rb32(pb);
5543  b = avio_rb32(pb);
5544  l = avio_rb32(pb);
5545  r = avio_rb32(pb);
5546 
5547  if (b >= UINT_MAX - t || r >= UINT_MAX - l) {
5548  av_log(c->fc, AV_LOG_ERROR,
5549  "Invalid bounding rectangle coordinates "
5550  "%"PRIu32",%"PRIu32",%"PRIu32",%"PRIu32"\n", l, t, r, b);
5551  return AVERROR_INVALIDDATA;
5552  }
5553 
5554  if (l || t || r || b)
5555  projection = AV_SPHERICAL_EQUIRECTANGULAR_TILE;
5556  else
5557  projection = AV_SPHERICAL_EQUIRECTANGULAR;
5558  break;
5559  default:
5560  av_log(c->fc, AV_LOG_ERROR, "Unknown projection type: %s\n", av_fourcc2str(tag));
5561  return 0;
5562  }
5563 
5565  if (!sc->spherical)
5566  return AVERROR(ENOMEM);
5567 
5568  sc->spherical->projection = projection;
5569 
5570  sc->spherical->yaw = yaw;
5571  sc->spherical->pitch = pitch;
5572  sc->spherical->roll = roll;
5573 
5574  sc->spherical->padding = padding;
5575 
5576  sc->spherical->bound_left = l;
5577  sc->spherical->bound_top = t;
5578  sc->spherical->bound_right = r;
5579  sc->spherical->bound_bottom = b;
5580 
5581  return 0;
5582 }
5583 
5585 {
5586  int ret = 0;
5587  uint8_t *buffer = av_malloc(len + 1);
5588  const char *val;
5589 
5590  if (!buffer)
5591  return AVERROR(ENOMEM);
5592  buffer[len] = '\0';
5593 
5594  ret = ffio_read_size(pb, buffer, len);
5595  if (ret < 0)
5596  goto out;
5597 
5598  /* Check for mandatory keys and values, try to support XML as best-effort */
5599  if (!sc->spherical &&
5600  av_stristr(buffer, "<GSpherical:StitchingSoftware>") &&
5601  (val = av_stristr(buffer, "<GSpherical:Spherical>")) &&
5602  av_stristr(val, "true") &&
5603  (val = av_stristr(buffer, "<GSpherical:Stitched>")) &&
5604  av_stristr(val, "true") &&
5605  (val = av_stristr(buffer, "<GSpherical:ProjectionType>")) &&
5606  av_stristr(val, "equirectangular")) {
5608  if (!sc->spherical)
5609  goto out;
5610 
5612 
5613  if (av_stristr(buffer, "<GSpherical:StereoMode>") && !sc->stereo3d) {
5614  enum AVStereo3DType mode;
5615 
5616  if (av_stristr(buffer, "left-right"))
5617  mode = AV_STEREO3D_SIDEBYSIDE;
5618  else if (av_stristr(buffer, "top-bottom"))
5619  mode = AV_STEREO3D_TOPBOTTOM;
5620  else
5621  mode = AV_STEREO3D_2D;
5622 
5623  sc->stereo3d = av_stereo3d_alloc();
5624  if (!sc->stereo3d)
5625  goto out;
5626 
5627  sc->stereo3d->type = mode;
5628  }
5629 
5630  /* orientation */
5631  val = av_stristr(buffer, "<GSpherical:InitialViewHeadingDegrees>");
5632  if (val)
5633  sc->spherical->yaw = strtol(val, NULL, 10) * (1 << 16);
5634  val = av_stristr(buffer, "<GSpherical:InitialViewPitchDegrees>");
5635  if (val)
5636  sc->spherical->pitch = strtol(val, NULL, 10) * (1 << 16);
5637  val = av_stristr(buffer, "<GSpherical:InitialViewRollDegrees>");
5638  if (val)
5639  sc->spherical->roll = strtol(val, NULL, 10) * (1 << 16);
5640  }
5641 
5642 out:
5643  av_free(buffer);
5644  return ret;
5645 }
5646 
5648 {
5649  AVStream *st;
5650  MOVStreamContext *sc;
5651  int64_t ret;
5652  uint8_t uuid[16];
5653  static const uint8_t uuid_isml_manifest[] = {
5654  0xa5, 0xd4, 0x0b, 0x30, 0xe8, 0x14, 0x11, 0xdd,
5655  0xba, 0x2f, 0x08, 0x00, 0x20, 0x0c, 0x9a, 0x66
5656  };
5657  static const uint8_t uuid_xmp[] = {
5658  0xbe, 0x7a, 0xcf, 0xcb, 0x97, 0xa9, 0x42, 0xe8,
5659  0x9c, 0x71, 0x99, 0x94, 0x91, 0xe3, 0xaf, 0xac
5660  };
5661  static const uint8_t uuid_spherical[] = {
5662  0xff, 0xcc, 0x82, 0x63, 0xf8, 0x55, 0x4a, 0x93,
5663  0x88, 0x14, 0x58, 0x7a, 0x02, 0x52, 0x1f, 0xdd,
5664  };
5665 
5666  if (atom.size < sizeof(uuid) || atom.size >= FFMIN(INT_MAX, SIZE_MAX))
5667  return AVERROR_INVALIDDATA;
5668 
5669  if (c->fc->nb_streams < 1)
5670  return 0;
5671  st = c->fc->streams[c->fc->nb_streams - 1];
5672  sc = st->priv_data;
5673 
5674  ret = avio_read(pb, uuid, sizeof(uuid));
5675  if (ret < 0) {
5676  return ret;
5677  } else if (ret != sizeof(uuid)) {
5678  return AVERROR_INVALIDDATA;
5679  }
5680  if (!memcmp(uuid, uuid_isml_manifest, sizeof(uuid))) {
5681  uint8_t *buffer, *ptr;
5682  char *endptr;
5683  size_t len = atom.size - sizeof(uuid);
5684 
5685  if (len < 4) {
5686  return AVERROR_INVALIDDATA;
5687  }
5688  ret = avio_skip(pb, 4); // zeroes
5689  len -= 4;
5690 
5691  buffer = av_mallocz(len + 1);
5692  if (!buffer) {
5693  return AVERROR(ENOMEM);
5694  }
5695  ret = avio_read(pb, buffer, len);
5696  if (ret < 0) {
5697  av_free(buffer);
5698  return ret;
5699  } else if (ret != len) {
5700  av_free(buffer);
5701  return AVERROR_INVALIDDATA;
5702  }
5703 
5704  ptr = buffer;
5705  while ((ptr = av_stristr(ptr, "systemBitrate=\""))) {
5706  ptr += sizeof("systemBitrate=\"") - 1;
5707  c->bitrates_count++;
5708  c->bitrates = av_realloc_f(c->bitrates, c->bitrates_count, sizeof(*c->bitrates));
5709  if (!c->bitrates) {
5710  c->bitrates_count = 0;
5711  av_free(buffer);
5712  return AVERROR(ENOMEM);
5713  }
5714  errno = 0;
5715  ret = strtol(ptr, &endptr, 10);
5716  if (ret < 0 || errno || *endptr != '"') {
5717  c->bitrates[c->bitrates_count - 1] = 0;
5718  } else {
5719  c->bitrates[c->bitrates_count - 1] = ret;
5720  }
5721  }
5722 
5723  av_free(buffer);
5724  } else if (!memcmp(uuid, uuid_xmp, sizeof(uuid))) {
5725  uint8_t *buffer;
5726  size_t len = atom.size - sizeof(uuid);
5727  if (c->export_xmp) {
5728  buffer = av_mallocz(len + 1);
5729  if (!buffer) {
5730  return AVERROR(ENOMEM);
5731  }
5732  ret = avio_read(pb, buffer, len);
5733  if (ret < 0) {
5734  av_free(buffer);
5735  return ret;
5736  } else if (ret != len) {
5737  av_free(buffer);
5738  return AVERROR_INVALIDDATA;
5739  }
5740  buffer[len] = '\0';
5741  av_dict_set(&c->fc->metadata, "xmp", buffer, 0);
5742  av_free(buffer);
5743  } else {
5744  // skip all uuid atom, which makes it fast for long uuid-xmp file
5745  ret = avio_skip(pb, len);
5746  if (ret < 0)
5747  return ret;
5748  }
5749  } else if (!memcmp(uuid, uuid_spherical, sizeof(uuid))) {
5750  size_t len = atom.size - sizeof(uuid);
5751  ret = mov_parse_uuid_spherical(sc, pb, len);
5752  if (ret < 0)
5753  return ret;
5754  if (!sc->spherical)
5755  av_log(c->fc, AV_LOG_WARNING, "Invalid spherical metadata found\n");
5756  }
5757 
5758  return 0;
5759 }
5760 
5762 {
5763  int ret;
5764  uint8_t content[16];
5765 
5766  if (atom.size < 8)
5767  return 0;
5768 
5769  ret = avio_read(pb, content, FFMIN(sizeof(content), atom.size));
5770  if (ret < 0)
5771  return ret;
5772 
5773  if ( !c->found_moov
5774  && !c->found_mdat
5775  && !memcmp(content, "Anevia\x1A\x1A", 8)
5778  }
5779 
5780  return 0;
5781 }
5782 
5784 {
5785  uint32_t format = avio_rl32(pb);
5786  MOVStreamContext *sc;
5787  enum AVCodecID id;
5788  AVStream *st;
5789 
5790  if (c->fc->nb_streams < 1)
5791  return 0;
5792  st = c->fc->streams[c->fc->nb_streams - 1];
5793  sc = st->priv_data;
5794 
5795  switch (sc->format)
5796  {
5797  case MKTAG('e','n','c','v'): // encrypted video
5798  case MKTAG('e','n','c','a'): // encrypted audio
5799  id = mov_codec_id(st, format);
5800  if (st->codecpar->codec_id != AV_CODEC_ID_NONE &&
5801  st->codecpar->codec_id != id) {
5802  av_log(c->fc, AV_LOG_WARNING,
5803  "ignoring 'frma' atom of '%.4s', stream has codec id %d\n",
5804  (char*)&format, st->codecpar->codec_id);
5805  break;
5806  }
5807 
5808  st->codecpar->codec_id = id;
5809  sc->format = format;
5810  break;
5811 
5812  default:
5813  if (format != sc->format) {
5814  av_log(c->fc, AV_LOG_WARNING,
5815  "ignoring 'frma' atom of '%.4s', stream format is '%.4s'\n",
5816  (char*)&format, (char*)&sc->format);
5817  }
5818  break;
5819  }
5820 
5821  return 0;
5822 }
5823 
5824 /**
5825  * Gets the current encryption info and associated current stream context. If
5826  * we are parsing a track fragment, this will return the specific encryption
5827  * info for this fragment; otherwise this will return the global encryption
5828  * info for the current stream.
5829  */
5831 {
5832  MOVFragmentStreamInfo *frag_stream_info;
5833  AVStream *st;
5834  int i;
5835 
5836  frag_stream_info = get_current_frag_stream_info(&c->frag_index);
5837  if (frag_stream_info) {
5838  for (i = 0; i < c->fc->nb_streams; i++) {
5839  if (c->fc->streams[i]->id == frag_stream_info->id) {
5840  st = c->fc->streams[i];
5841  break;
5842  }
5843  }
5844  if (i == c->fc->nb_streams)
5845  return 0;
5846  *sc = st->priv_data;
5847 
5848  if (!frag_stream_info->encryption_index) {
5849  // If this stream isn't encrypted, don't create the index.
5850  if (!(*sc)->cenc.default_encrypted_sample)
5851  return 0;
5852  frag_stream_info->encryption_index = av_mallocz(sizeof(*frag_stream_info->encryption_index));
5853  if (!frag_stream_info->encryption_index)
5854  return AVERROR(ENOMEM);
5855  }
5856  *encryption_index = frag_stream_info->encryption_index;
5857  return 1;
5858  } else {
5859  // No current track fragment, using stream level encryption info.
5860 
5861  if (c->fc->nb_streams < 1)
5862  return 0;
5863  st = c->fc->streams[c->fc->nb_streams - 1];
5864  *sc = st->priv_data;
5865 
5866  if (!(*sc)->cenc.encryption_index) {
5867  // If this stream isn't encrypted, don't create the index.
5868  if (!(*sc)->cenc.default_encrypted_sample)
5869  return 0;
5870  (*sc)->cenc.encryption_index = av_mallocz(sizeof(*frag_stream_info->encryption_index));
5871  if (!(*sc)->cenc.encryption_index)
5872  return AVERROR(ENOMEM);
5873  }
5874 
5875  *encryption_index = (*sc)->cenc.encryption_index;
5876  return 1;
5877  }
5878 }
5879 
5881 {
5882  int i;
5883  unsigned int subsample_count;
5884  AVSubsampleEncryptionInfo *subsamples;
5885 
5886  if (!sc->cenc.default_encrypted_sample) {
5887  av_log(c->fc, AV_LOG_ERROR, "Missing schm or tenc\n");
5888  return AVERROR_INVALIDDATA;
5889  }
5890 
5892  if (!*sample)
5893  return AVERROR(ENOMEM);
5894 
5895  if (sc->cenc.per_sample_iv_size != 0) {
5896  if (avio_read(pb, (*sample)->iv, sc->cenc.per_sample_iv_size) != sc->cenc.per_sample_iv_size) {
5897  av_log(c->fc, AV_LOG_ERROR, "failed to read the initialization vector\n");
5898  av_encryption_info_free(*sample);
5899  *sample = NULL;
5900  return AVERROR_INVALIDDATA;
5901  }
5902  }
5903 
5904  if (use_subsamples) {
5905  subsample_count = avio_rb16(pb);
5906  av_free((*sample)->subsamples);
5907  (*sample)->subsamples = av_mallocz_array(subsample_count, sizeof(*subsamples));
5908  if (!(*sample)->subsamples) {
5909  av_encryption_info_free(*sample);
5910  *sample = NULL;
5911  return AVERROR(ENOMEM);
5912  }
5913 
5914  for (i = 0; i < subsample_count && !pb->eof_reached; i++) {
5915  (*sample)->subsamples[i].bytes_of_clear_data = avio_rb16(pb);
5916  (*sample)->subsamples[i].bytes_of_protected_data = avio_rb32(pb);
5917  }
5918 
5919  if (pb->eof_reached) {
5920  av_log(c->fc, AV_LOG_ERROR, "hit EOF while reading sub-sample encryption info\n");
5921  av_encryption_info_free(*sample);
5922  *sample = NULL;
5923  return AVERROR_INVALIDDATA;
5924  }
5925  (*sample)->subsample_count = subsample_count;
5926  }
5927 
5928  return 0;
5929 }
5930 
5932 {
5933  AVEncryptionInfo **encrypted_samples;
5934  MOVEncryptionIndex *encryption_index;
5935  MOVStreamContext *sc;
5936  int use_subsamples, ret;
5937  unsigned int sample_count, i, alloc_size = 0;
5938 
5939  ret = get_current_encryption_info(c, &encryption_index, &sc);
5940  if (ret != 1)
5941  return ret;
5942 
5943  if (encryption_index->nb_encrypted_samples) {
5944  // This can happen if we have both saio/saiz and senc atoms.
5945  av_log(c->fc, AV_LOG_DEBUG, "Ignoring duplicate encryption info in senc\n");
5946  return 0;
5947  }
5948 
5949  avio_r8(pb); /* version */
5950  use_subsamples = avio_rb24(pb) & 0x02; /* flags */
5951 
5952  sample_count = avio_rb32(pb);
5953  if (sample_count >= INT_MAX / sizeof(*encrypted_samples))
5954  return AVERROR(ENOMEM);
5955 
5956  for (i = 0; i < sample_count; i++) {
5957  unsigned int min_samples = FFMIN(FFMAX(i + 1, 1024 * 1024), sample_count);
5958  encrypted_samples = av_fast_realloc(encryption_index->encrypted_samples, &alloc_size,
5959  min_samples * sizeof(*encrypted_samples));
5960  if (encrypted_samples) {
5961  encryption_index->encrypted_samples = encrypted_samples;
5962 
5964  c, pb, sc, &encryption_index->encrypted_samples[i], use_subsamples);
5965  } else {
5966  ret = AVERROR(ENOMEM);
5967  }
5968  if (pb->eof_reached) {
5969  av_log(c->fc, AV_LOG_ERROR, "Hit EOF while reading senc\n");
5970  ret = AVERROR_INVALIDDATA;
5971  }
5972 
5973  if (ret < 0) {
5974  for (; i > 0; i--)
5975  av_encryption_info_free(encryption_index->encrypted_samples[i - 1]);
5976  av_freep(&encryption_index->encrypted_samples);
5977  return ret;
5978  }
5979  }
5980  encryption_index->nb_encrypted_samples = sample_count;
5981 
5982  return 0;
5983 }
5984 
5986 {
5987  AVEncryptionInfo **sample, **encrypted_samples;
5988  int64_t prev_pos;
5989  size_t sample_count, sample_info_size, i;
5990  int ret = 0;
5991  unsigned int alloc_size = 0;
5992 
5993  if (encryption_index->nb_encrypted_samples)
5994  return 0;
5995  sample_count = encryption_index->auxiliary_info_sample_count;
5996  if (encryption_index->auxiliary_offsets_count != 1) {
5997  av_log(c->fc, AV_LOG_ERROR, "Multiple auxiliary info chunks are not supported\n");
5998  return AVERROR_PATCHWELCOME;
5999  }
6000  if (sample_count >= INT_MAX / sizeof(*encrypted_samples))
6001  return AVERROR(ENOMEM);
6002 
6003  prev_pos = avio_tell(pb);
6004  if (!(pb->seekable & AVIO_SEEKABLE_NORMAL) ||
6005  avio_seek(pb, encryption_index->auxiliary_offsets[0], SEEK_SET) != encryption_index->auxiliary_offsets[0]) {
6006  av_log(c->fc, AV_LOG_INFO, "Failed to seek for auxiliary info, will only parse senc atoms for encryption info\n");
6007  goto finish;
6008  }
6009 
6010  for (i = 0; i < sample_count && !pb->eof_reached; i++) {
6011  unsigned int min_samples = FFMIN(FFMAX(i + 1, 1024 * 1024), sample_count);
6012  encrypted_samples = av_fast_realloc(encryption_index->encrypted_samples, &alloc_size,
6013  min_samples * sizeof(*encrypted_samples));
6014  if (!encrypted_samples) {
6015  ret = AVERROR(ENOMEM);
6016  goto finish;
6017  }
6018  encryption_index->encrypted_samples = encrypted_samples;
6019 
6020  sample = &encryption_index->encrypted_samples[i];
6021  sample_info_size = encryption_index->auxiliary_info_default_size
6022  ? encryption_index->auxiliary_info_default_size
6023  : encryption_index->auxiliary_info_sizes[i];
6024 
6025  ret = mov_read_sample_encryption_info(c, pb, sc, sample, sample_info_size > sc->cenc.per_sample_iv_size);
6026  if (ret < 0)
6027  goto finish;
6028  }
6029  if (pb->eof_reached) {
6030  av_log(c->fc, AV_LOG_ERROR, "Hit EOF while reading auxiliary info\n");
6031  ret = AVERROR_INVALIDDATA;
6032  } else {
6033  encryption_index->nb_encrypted_samples = sample_count;
6034  }
6035 
6036 finish:
6037  avio_seek(pb, prev_pos, SEEK_SET);
6038  if (ret < 0) {
6039  for (; i > 0; i--) {
6040  av_encryption_info_free(encryption_index->encrypted_samples[i - 1]);
6041  }
6042  av_freep(&encryption_index->encrypted_samples);
6043  }
6044  return ret;
6045 }
6046 
6047 /**
6048  * Tries to read the given number of bytes from the stream and puts it in a
6049  * newly allocated buffer. This reads in small chunks to avoid allocating large
6050  * memory if the file contains an invalid/malicious size value.
6051  */
6052 static int mov_try_read_block(AVIOContext *pb, size_t size, uint8_t **data)
6053 {
6054  const unsigned int block_size = 1024 * 1024;
6055  uint8_t *buffer = NULL;
6056  unsigned int alloc_size = 0, offset = 0;
6057  while (offset < size) {
6058  unsigned int new_size =
6059  alloc_size >= INT_MAX - block_size ? INT_MAX : alloc_size + block_size;
6060  uint8_t *new_buffer = av_fast_realloc(buffer, &alloc_size, new_size);
6061  unsigned int to_read = FFMIN(size, alloc_size) - offset;
6062  if (!new_buffer) {
6063  av_free(buffer);
6064  return AVERROR(ENOMEM);
6065  }
6066  buffer = new_buffer;
6067 
6068  if (avio_read(pb, buffer + offset, to_read) != to_read) {
6069  av_free(buffer);
6070  return AVERROR_INVALIDDATA;
6071  }
6072  offset += to_read;
6073  }
6074 
6075  *data = buffer;
6076  return 0;
6077 }
6078 
6080 {
6081  MOVEncryptionIndex *encryption_index;
6082  MOVStreamContext *sc;
6083  int ret;
6084  unsigned int sample_count, aux_info_type, aux_info_param;
6085 
6086  ret = get_current_encryption_info(c, &encryption_index, &sc);
6087  if (ret != 1)
6088  return ret;
6089 
6090  if (encryption_index->nb_encrypted_samples) {
6091  // This can happen if we have both saio/saiz and senc atoms.
6092  av_log(c->fc, AV_LOG_DEBUG, "Ignoring duplicate encryption info in saiz\n");
6093  return 0;
6094  }
6095 
6096  if (encryption_index->auxiliary_info_sample_count) {
6097  av_log(c->fc, AV_LOG_ERROR, "Duplicate saiz atom\n");
6098  return AVERROR_INVALIDDATA;
6099  }
6100 
6101  avio_r8(pb); /* version */
6102  if (avio_rb24(pb) & 0x01) { /* flags */
6103  aux_info_type = avio_rb32(pb);
6104  aux_info_param = avio_rb32(pb);
6105  if (sc->cenc.default_encrypted_sample) {
6106  if (aux_info_type != sc->cenc.default_encrypted_sample->scheme) {
6107  av_log(c->fc, AV_LOG_DEBUG, "Ignoring saiz box with non-zero aux_info_type\n");
6108  return 0;
6109  }
6110  if (aux_info_param != 0) {
6111  av_log(c->fc, AV_LOG_DEBUG, "Ignoring saiz box with non-zero aux_info_type_parameter\n");
6112  return 0;
6113  }
6114  } else {
6115  // Didn't see 'schm' or 'tenc', so this isn't encrypted.
6116  if ((aux_info_type == MKBETAG('c','e','n','c') ||
6117  aux_info_type == MKBETAG('c','e','n','s') ||
6118  aux_info_type == MKBETAG('c','b','c','1') ||
6119  aux_info_type == MKBETAG('c','b','c','s')) &&
6120  aux_info_param == 0) {
6121  av_log(c->fc, AV_LOG_ERROR, "Saw encrypted saiz without schm/tenc\n");
6122  return AVERROR_INVALIDDATA;
6123  } else {
6124  return 0;
6125  }
6126  }
6127  } else if (!sc->cenc.default_encrypted_sample) {
6128  // Didn't see 'schm' or 'tenc', so this isn't encrypted.
6129  return 0;
6130  }
6131 
6132  encryption_index->auxiliary_info_default_size = avio_r8(pb);
6133  sample_count = avio_rb32(pb);
6134  encryption_index->auxiliary_info_sample_count = sample_count;
6135 
6136  if (encryption_index->auxiliary_info_default_size == 0) {
6137  ret = mov_try_read_block(pb, sample_count, &encryption_index->auxiliary_info_sizes);
6138  if (ret < 0) {
6139  av_log(c->fc, AV_LOG_ERROR, "Failed to read the auxiliary info\n");
6140  return ret;
6141  }
6142  }
6143 
6144  if (encryption_index->auxiliary_offsets_count) {
6145  return mov_parse_auxiliary_info(c, sc, pb, encryption_index);
6146  }
6147 
6148  return 0;
6149 }
6150 
6152 {
6153  uint64_t *auxiliary_offsets;
6154  MOVEncryptionIndex *encryption_index;
6155  MOVStreamContext *sc;
6156  int i, ret;
6157  unsigned int version, entry_count, aux_info_type, aux_info_param;
6158  unsigned int alloc_size = 0;
6159 
6160  ret = get_current_encryption_info(c, &encryption_index, &sc);
6161  if (ret != 1)
6162  return ret;
6163 
6164  if (encryption_index->nb_encrypted_samples) {
6165  // This can happen if we have both saio/saiz and senc atoms.
6166  av_log(c->fc, AV_LOG_DEBUG, "Ignoring duplicate encryption info in saio\n");
6167  return 0;
6168  }
6169 
6170  if (encryption_index->auxiliary_offsets_count) {
6171  av_log(c->fc, AV_LOG_ERROR, "Duplicate saio atom\n");
6172  return AVERROR_INVALIDDATA;
6173  }
6174 
6175  version = avio_r8(pb); /* version */
6176  if (avio_rb24(pb) & 0x01) { /* flags */
6177  aux_info_type = avio_rb32(pb);
6178  aux_info_param = avio_rb32(pb);
6179  if (sc->cenc.default_encrypted_sample) {
6180  if (aux_info_type != sc->cenc.default_encrypted_sample->scheme) {
6181  av_log(c->fc, AV_LOG_DEBUG, "Ignoring saio box with non-zero aux_info_type\n");
6182  return 0;
6183  }
6184  if (aux_info_param != 0) {
6185  av_log(c->fc, AV_LOG_DEBUG, "Ignoring saio box with non-zero aux_info_type_parameter\n");
6186  return 0;
6187  }
6188  } else {
6189  // Didn't see 'schm' or 'tenc', so this isn't encrypted.
6190  if ((aux_info_type == MKBETAG('c','e','n','c') ||
6191  aux_info_type == MKBETAG('c','e','n','s') ||
6192  aux_info_type == MKBETAG('c','b','c','1') ||
6193  aux_info_type == MKBETAG('c','b','c','s')) &&
6194  aux_info_param == 0) {
6195  av_log(c->fc, AV_LOG_ERROR, "Saw encrypted saio without schm/tenc\n");
6196  return AVERROR_INVALIDDATA;
6197  } else {
6198  return 0;
6199  }
6200  }
6201  } else if (!sc->cenc.default_encrypted_sample) {
6202  // Didn't see 'schm' or 'tenc', so this isn't encrypted.
6203  return 0;
6204  }
6205 
6206  entry_count = avio_rb32(pb);
6207  if (entry_count >= INT_MAX / sizeof(*auxiliary_offsets))
6208  return AVERROR(ENOMEM);
6209 
6210  for (i = 0; i < entry_count && !pb->eof_reached; i++) {
6211  unsigned int min_offsets = FFMIN(FFMAX(i + 1, 1024), entry_count);
6212  auxiliary_offsets = av_fast_realloc(
6213  encryption_index->auxiliary_offsets, &alloc_size,
6214  min_offsets * sizeof(*auxiliary_offsets));
6215  if (!auxiliary_offsets) {
6216  av_freep(&encryption_index->auxiliary_offsets);
6217  return AVERROR(ENOMEM);
6218  }
6219  encryption_index->auxiliary_offsets = auxiliary_offsets;
6220 
6221  if (version == 0) {
6222  encryption_index->auxiliary_offsets[i] = avio_rb32(pb);
6223  } else {
6224  encryption_index->auxiliary_offsets[i] = avio_rb64(pb);
6225  }
6226  if (c->frag_index.current >= 0) {
6227  encryption_index->auxiliary_offsets[i] += c->fragment.base_data_offset;
6228  }
6229  }
6230 
6231  if (pb->eof_reached) {
6232  av_log(c->fc, AV_LOG_ERROR, "Hit EOF while reading saio\n");
6233  av_freep(&encryption_index->auxiliary_offsets);
6234  return AVERROR_INVALIDDATA;
6235  }
6236 
6237  encryption_index->auxiliary_offsets_count = entry_count;
6238 
6239  if (encryption_index->auxiliary_info_sample_count) {
6240  return mov_parse_auxiliary_info(c, sc, pb, encryption_index);
6241  }
6242 
6243  return 0;
6244 }
6245 
6247 {
6248  AVEncryptionInitInfo *info, *old_init_info;
6249  uint8_t **key_ids;
6250  AVStream *st;
6251  uint8_t *side_data, *extra_data, *old_side_data;
6252  size_t side_data_size;
6253  int ret = 0, old_side_data_size;
6254  unsigned int version, kid_count, extra_data_size, alloc_size = 0;
6255 
6256  if (c->fc->nb_streams < 1)
6257  return 0;
6258  st = c->fc->streams[c->fc->nb_streams-1];
6259 
6260  version = avio_r8(pb); /* version */
6261  avio_rb24(pb); /* flags */
6262 
6263  info = av_encryption_init_info_alloc(/* system_id_size */ 16, /* num_key_ids */ 0,
6264  /* key_id_size */ 16, /* data_size */ 0);
6265  if (!info)
6266  return AVERROR(ENOMEM);
6267 
6268  if (avio_read(pb, info->system_id, 16) != 16) {
6269  av_log(c->fc, AV_LOG_ERROR, "Failed to read the system id\n");
6270  ret = AVERROR_INVALIDDATA;
6271  goto finish;
6272  }
6273 
6274  if (version > 0) {
6275  kid_count = avio_rb32(pb);
6276  if (kid_count >= INT_MAX / sizeof(*key_ids))
6277  return AVERROR(ENOMEM);
6278 
6279  for (unsigned int i = 0; i < kid_count && !pb->eof_reached; i++) {
6280  unsigned int min_kid_count = FFMIN(FFMAX(i + 1, 1024), kid_count);
6281  key_ids = av_fast_realloc(info->key_ids, &alloc_size,
6282  min_kid_count * sizeof(*key_ids));
6283  if (!key_ids) {
6284  ret = AVERROR(ENOMEM);
6285  goto finish;
6286  }
6287  info->key_ids = key_ids;
6288 
6289  info->key_ids[i] = av_mallocz(16);
6290  if (!info->key_ids[i]) {
6291  ret = AVERROR(ENOMEM);
6292  goto finish;
6293  }
6294  info->num_key_ids = i + 1;
6295 
6296  if (avio_read(pb, info->key_ids[i], 16) != 16) {
6297  av_log(c->fc, AV_LOG_ERROR, "Failed to read the key id\n");
6298  ret = AVERROR_INVALIDDATA;
6299  goto finish;
6300  }
6301  }
6302 
6303  if (pb->eof_reached) {
6304  av_log(c->fc, AV_LOG_ERROR, "Hit EOF while reading pssh\n");
6305  ret = AVERROR_INVALIDDATA;
6306  goto finish;
6307  }
6308  }
6309 
6310  extra_data_size = avio_rb32(pb);
6311  ret = mov_try_read_block(pb, extra_data_size, &extra_data);
6312  if (ret < 0)
6313  goto finish;
6314 
6315  av_freep(&info->data); // malloc(0) may still allocate something.
6316  info->data = extra_data;
6317  info->data_size = extra_data_size;
6318 
6319  // If there is existing initialization data, append to the list.
6320  old_side_data = av_stream_get_side_data(st, AV_PKT_DATA_ENCRYPTION_INIT_INFO, &old_side_data_size);
6321  if (old_side_data) {
6322  old_init_info = av_encryption_init_info_get_side_data(old_side_data, old_side_data_size);
6323  if (old_init_info) {
6324  // Append to the end of the list.
6325  for (AVEncryptionInitInfo *cur = old_init_info;; cur = cur->next) {
6326  if (!cur->next) {
6327  cur->next = info;
6328  break;
6329  }
6330  }
6331  info = old_init_info;
6332  } else {
6333  // Assume existing side-data will be valid, so the only error we could get is OOM.
6334  ret = AVERROR(ENOMEM);
6335  goto finish;
6336  }
6337  }
6338 
6339  side_data = av_encryption_init_info_add_side_data(info, &side_data_size);
6340  if (!side_data) {
6341  ret = AVERROR(ENOMEM);
6342  goto finish;
6343  }
6345  side_data, side_data_size);
6346  if (ret < 0)
6347  av_free(side_data);
6348 
6349 finish:
6351  return ret;
6352 }
6353 
6355 {
6356  AVStream *st;
6357  MOVStreamContext *sc;
6358 
6359  if (c->fc->nb_streams < 1)
6360  return 0;
6361  st = c->fc->streams[c->fc->nb_streams-1];
6362  sc = st->priv_data;
6363 
6364  if (sc->pseudo_stream_id != 0) {
6365  av_log(c->fc, AV_LOG_ERROR, "schm boxes are only supported in first sample descriptor\n");
6366  return AVERROR_PATCHWELCOME;
6367  }
6368 
6369  if (atom.size < 8)
6370  return AVERROR_INVALIDDATA;
6371 
6372  avio_rb32(pb); /* version and flags */
6373 
6374  if (!sc->cenc.default_encrypted_sample) {
6376  if (!sc->cenc.default_encrypted_sample) {
6377  return AVERROR(ENOMEM);
6378  }
6379  }
6380 
6382  return 0;
6383 }
6384 
6386 {
6387  AVStream *st;
6388  MOVStreamContext *sc;
6389  unsigned int version, pattern, is_protected, iv_size;
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, "tenc atom are only supported in first sample descriptor\n");
6398  return AVERROR_PATCHWELCOME;
6399  }
6400 
6401  if (!sc->cenc.default_encrypted_sample) {
6403  if (!sc->cenc.default_encrypted_sample) {
6404  return AVERROR(ENOMEM);
6405  }
6406  }
6407 
6408  if (atom.size < 20)
6409  return AVERROR_INVALIDDATA;
6410 
6411  version = avio_r8(pb); /* version */
6412  avio_rb24(pb); /* flags */
6413 
6414  avio_r8(pb); /* reserved */
6415  pattern = avio_r8(pb);
6416 
6417  if (version > 0) {
6418  sc->cenc.default_encrypted_sample->crypt_byte_block = pattern >> 4;
6419  sc->cenc.default_encrypted_sample->skip_byte_block = pattern & 0xf;
6420  }
6421 
6422  is_protected = avio_r8(pb);
6423  if (is_protected && !sc->cenc.encryption_index) {
6424  // The whole stream should be by-default encrypted.
6426  if (!sc->cenc.encryption_index)
6427  return AVERROR(ENOMEM);
6428  }
6429  sc->cenc.per_sample_iv_size = avio_r8(pb);
6430  if (sc->cenc.per_sample_iv_size != 0 && sc->cenc.per_sample_iv_size != 8 &&
6431  sc->cenc.per_sample_iv_size != 16) {
6432  av_log(c->fc, AV_LOG_ERROR, "invalid per-sample IV size value\n");
6433  return AVERROR_INVALIDDATA;
6434  }
6435  if (avio_read(pb, sc->cenc.default_encrypted_sample->key_id, 16) != 16) {
6436  av_log(c->fc, AV_LOG_ERROR, "failed to read the default key ID\n");
6437  return AVERROR_INVALIDDATA;
6438  }
6439 
6440  if (is_protected && !sc->cenc.per_sample_iv_size) {
6441  iv_size = avio_r8(pb);
6442  if (iv_size != 8 && iv_size != 16) {
6443  av_log(c->fc, AV_LOG_ERROR, "invalid default_constant_IV_size in tenc atom\n");
6444  return AVERROR_INVALIDDATA;
6445  }
6446 
6447  if (avio_read(pb, sc->cenc.default_encrypted_sample->iv, iv_size) != iv_size) {
6448  av_log(c->fc, AV_LOG_ERROR, "failed to read the default IV\n");
6449  return AVERROR_INVALIDDATA;
6450  }
6451  }
6452 
6453  return 0;
6454 }
6455 
6457 {
6458  AVStream *st;
6459  int last, type, size, ret;
6460  uint8_t buf[4];
6461 
6462  if (c->fc->nb_streams < 1)
6463  return 0;
6464  st = c->fc->streams[c->fc->nb_streams-1];
6465 
6466  if ((uint64_t)atom.size > (1<<30) || atom.size < 42)
6467  return AVERROR_INVALIDDATA;
6468 
6469  /* Check FlacSpecificBox version. */
6470  if (avio_r8(pb) != 0)
6471  return AVERROR_INVALIDDATA;
6472 
6473  avio_rb24(pb); /* Flags */
6474 
6475  avio_read(pb, buf, sizeof(buf));
6476  flac_parse_block_header(buf, &last, &type, &size);
6477 
6478  if (type != FLAC_METADATA_TYPE_STREAMINFO || size != FLAC_STREAMINFO_SIZE) {
6479  av_log(c->fc, AV_LOG_ERROR, "STREAMINFO must be first FLACMetadataBlock\n");
6480  return AVERROR_INVALIDDATA;
6481  }
6482 
6483  ret = ff_get_extradata(c->fc, st->codecpar, pb, size);
6484  if (ret < 0)
6485  return ret;
6486 
6487  if (!last)
6488  av_log(c->fc, AV_LOG_WARNING, "non-STREAMINFO FLACMetadataBlock(s) ignored\n");
6489 
6490  return 0;
6491 }
6492 
6494 {
6495  int i, ret;
6496 
6497  if (sample->scheme != MKBETAG('c','e','n','c') || sample->crypt_byte_block != 0 || sample->skip_byte_block != 0) {
6498  av_log(c->fc, AV_LOG_ERROR, "Only the 'cenc' encryption scheme is supported\n");
6499  return AVERROR_PATCHWELCOME;
6500  }
6501 
6502  if (!sc->cenc.aes_ctr) {
6503  /* initialize the cipher */
6504  sc->cenc.aes_ctr = av_aes_ctr_alloc();
6505  if (!sc->cenc.aes_ctr) {
6506  return AVERROR(ENOMEM);
6507  }
6508 
6509  ret = av_aes_ctr_init(sc->cenc.aes_ctr, c->decryption_key);
6510  if (ret < 0) {
6511  return ret;
6512  }
6513  }
6514 
6515  av_aes_ctr_set_full_iv(sc->cenc.aes_ctr, sample->iv);
6516 
6517  if (!sample->subsample_count)
6518  {
6519  /* decrypt the whole packet */
6520  av_aes_ctr_crypt(sc->cenc.aes_ctr, input, input, size);
6521  return 0;
6522  }
6523 
6524  for (i = 0; i < sample->subsample_count; i++)
6525  {
6526  if (sample->subsamples[i].bytes_of_clear_data + sample->subsamples[i].bytes_of_protected_data > size) {
6527  av_log(c->fc, AV_LOG_ERROR, "subsample size exceeds the packet size left\n");
6528  return AVERROR_INVALIDDATA;
6529  }
6530 
6531  /* skip the clear bytes */
6532  input += sample->subsamples[i].bytes_of_clear_data;
6533  size -= sample->subsamples[i].bytes_of_clear_data;
6534 
6535  /* decrypt the encrypted bytes */
6536  av_aes_ctr_crypt(sc->cenc.aes_ctr, input, input, sample->subsamples[i].bytes_of_protected_data);
6537  input += sample->subsamples[i].bytes_of_protected_data;
6538  size -= sample->subsamples[i].bytes_of_protected_data;
6539  }
6540 
6541  if (size > 0) {
6542  av_log(c->fc, AV_LOG_ERROR, "leftover packet bytes after subsample processing\n");
6543  return AVERROR_INVALIDDATA;
6544  }
6545 
6546  return 0;
6547 }
6548 
6549 static int cenc_filter(MOVContext *mov, MOVStreamContext *sc, AVPacket *pkt, int current_index)
6550 {
6551  MOVFragmentStreamInfo *frag_stream_info;
6552  MOVEncryptionIndex *encryption_index;
6553  AVEncryptionInfo *encrypted_sample;
6554  int encrypted_index, ret;
6555 
6556  frag_stream_info = get_current_frag_stream_info(&mov->frag_index);
6557  encrypted_index = current_index;
6558  encryption_index = NULL;
6559  if (frag_stream_info) {
6560  // Note this only supports encryption info in the first sample descriptor.
6561  if (mov->fragment.stsd_id == 1) {
6562  if (frag_stream_info->encryption_index) {
6563  encrypted_index = current_index - frag_stream_info->index_entry;
6564  encryption_index = frag_stream_info->encryption_index;
6565  } else {
6566  encryption_index = sc->cenc.encryption_index;
6567  }
6568  }
6569  } else {
6570  encryption_index = sc->cenc.encryption_index;
6571  }
6572 
6573  if (encryption_index) {
6574  if (encryption_index->auxiliary_info_sample_count &&
6575  !encryption_index->nb_encrypted_samples) {
6576  av_log(mov->fc, AV_LOG_ERROR, "saiz atom found without saio\n");
6577  return AVERROR_INVALIDDATA;
6578  }
6579  if (encryption_index->auxiliary_offsets_count &&
6580  !encryption_index->nb_encrypted_samples) {
6581  av_log(mov->fc, AV_LOG_ERROR, "saio atom found without saiz\n");
6582  return AVERROR_INVALIDDATA;
6583  }
6584 
6585  if (!encryption_index->nb_encrypted_samples) {
6586  // Full-sample encryption with default settings.
6587  encrypted_sample = sc->cenc.default_encrypted_sample;
6588  } else if (encrypted_index >= 0 && encrypted_index < encryption_index->nb_encrypted_samples) {
6589  // Per-sample setting override.
6590  encrypted_sample = encryption_index->encrypted_samples[encrypted_index];
6591  } else {
6592  av_log(mov->fc, AV_LOG_ERROR, "Incorrect number of samples in encryption info\n");
6593  return AVERROR_INVALIDDATA;
6594  }
6595 
6596  if (mov->decryption_key) {
6597  return cenc_decrypt(mov, sc, encrypted_sample, pkt->data, pkt->size);
6598  } else {
6599  size_t size;
6600  uint8_t *side_data = av_encryption_info_add_side_data(encrypted_sample, &size);
6601  if (!side_data)
6602  return AVERROR(ENOMEM);
6603  ret = av_packet_add_side_data(pkt, AV_PKT_DATA_ENCRYPTION_INFO, side_data, size);
6604  if (ret < 0)
6605  av_free(side_data);
6606  return ret;
6607  }
6608  }
6609 
6610  return 0;
6611 }
6612 
6614 {
6615  const int OPUS_SEEK_PREROLL_MS = 80;
6616  AVStream *st;
6617  size_t size;
6618  uint16_t pre_skip;
6619 
6620  if (c->fc->nb_streams < 1)
6621  return 0;
6622  st = c->fc->streams[c->fc->nb_streams-1];
6623 
6624  if ((uint64_t)atom.size > (1<<30) || atom.size < 11)
6625  return AVERROR_INVALIDDATA;
6626 
6627  /* Check OpusSpecificBox version. */
6628  if (avio_r8(pb) != 0) {
6629  av_log(c->fc, AV_LOG_ERROR, "unsupported OpusSpecificBox version\n");
6630  return AVERROR_INVALIDDATA;
6631  }
6632 
6633  /* OpusSpecificBox size plus magic for Ogg OpusHead header. */
6634  size = atom.size + 8;
6635 
6636  if (ff_alloc_extradata(st->codecpar, size))
6637  return AVERROR(ENOMEM);
6638 
6639  AV_WL32(st->codecpar->extradata, MKTAG('O','p','u','s'));
6640  AV_WL32(st->codecpar->extradata + 4, MKTAG('H','e','a','d'));
6641  AV_WB8(st->codecpar->extradata + 8, 1); /* OpusHead version */
6642  avio_read(pb, st->codecpar->extradata + 9, size - 9);
6643 
6644  /* OpusSpecificBox is stored in big-endian, but OpusHead is
6645  little-endian; aside from the preceeding magic and version they're
6646  otherwise currently identical. Data after output gain at offset 16
6647  doesn't need to be bytewapped. */
6648  pre_skip = AV_RB16(st->codecpar->extradata + 10);
6649  AV_WL16(st->codecpar->extradata + 10, pre_skip);
6650  AV_WL32(st->codecpar->extradata + 12, AV_RB32(st->codecpar->extradata + 12));
6651  AV_WL16(st->codecpar->extradata + 16, AV_RB16(st->codecpar->extradata + 16));
6652 
6653  st->codecpar->initial_padding = pre_skip;
6654  st->codecpar->seek_preroll = av_rescale_q(OPUS_SEEK_PREROLL_MS,
6655  (AVRational){1, 1000},
6656  (AVRational){1, 48000});
6657 
6658  return 0;
6659 }
6660 
6662 { MKTAG('A','C','L','R'), mov_read_aclr },
6663 { MKTAG('A','P','R','G'), mov_read_avid },
6664 { MKTAG('A','A','L','P'), mov_read_avid },
6665 { MKTAG('A','R','E','S'), mov_read_ares },
6666 { MKTAG('a','v','s','s'), mov_read_avss },
6667 { MKTAG('a','v','1','C'), mov_read_av1c },
6668 { MKTAG('c','h','p','l'), mov_read_chpl },
6669 { MKTAG('c','o','6','4'), mov_read_stco },
6670 { MKTAG('c','o','l','r'), mov_read_colr },
6671 { MKTAG('c','t','t','s'), mov_read_ctts }, /* composition time to sample */
6672 { MKTAG('d','i','n','f'), mov_read_default },
6673 { MKTAG('D','p','x','E'), mov_read_dpxe },
6674 { MKTAG('d','r','e','f'), mov_read_dref },
6675 { MKTAG('e','d','t','s'), mov_read_default },
6676 { MKTAG('e','l','s','t'), mov_read_elst },
6677 { MKTAG('e','n','d','a'), mov_read_enda },
6678 { MKTAG('f','i','e','l'), mov_read_fiel },
6679 { MKTAG('a','d','r','m'), mov_read_adrm },
6680 { MKTAG('f','t','y','p'), mov_read_ftyp },
6681 { MKTAG('g','l','b','l'), mov_read_glbl },
6682 { MKTAG('h','d','l','r'), mov_read_hdlr },
6683 { MKTAG('i','l','s','t'), mov_read_ilst },
6684 { MKTAG('j','p','2','h'), mov_read_jp2h },
6685 { MKTAG('m','d','a','t'), mov_read_mdat },
6686 { MKTAG('m','d','h','d'), mov_read_mdhd },
6687 { MKTAG('m','d','i','a'), mov_read_default },
6688 { MKTAG('m','e','t','a'), mov_read_meta },
6689 { MKTAG('m','i','n','f'), mov_read_default },
6690 { MKTAG('m','o','o','f'), mov_read_moof },
6691 { MKTAG('m','o','o','v'), mov_read_moov },
6692 { MKTAG('m','v','e','x'), mov_read_default },
6693 { MKTAG('m','v','h','d'), mov_read_mvhd },
6694 { MKTAG('S','M','I',' '), mov_read_svq3 },
6695 { MKTAG('a','l','a','c'), mov_read_alac }, /* alac specific atom */
6696 { MKTAG('a','v','c','C'), mov_read_glbl },
6697 { MKTAG('p','a','s','p'), mov_read_pasp },
6698 { MKTAG('s','i','d','x'), mov_read_sidx },
6699 { MKTAG('s','t','b','l'), mov_read_default },
6700 { MKTAG('s','t','c','o'), mov_read_stco },
6701 { MKTAG('s','t','p','s'), mov_read_stps },
6702 { MKTAG('s','t','r','f'), mov_read_strf },
6703 { MKTAG('s','t','s','c'), mov_read_stsc },
6704 { MKTAG('s','t','s','d'), mov_read_stsd }, /* sample description */
6705 { MKTAG('s','t','s','s'), mov_read_stss }, /* sync sample */
6706 { MKTAG('s','t','s','z'), mov_read_stsz }, /* sample size */
6707 { MKTAG('s','t','t','s'), mov_read_stts },
6708 { MKTAG('s','t','z','2'), mov_read_stsz }, /* compact sample size */
6709 { MKTAG('t','k','h','d'), mov_read_tkhd }, /* track header */
6710 { MKTAG('t','f','d','t'), mov_read_tfdt },
6711 { MKTAG('t','f','h','d'), mov_read_tfhd }, /* track fragment header */
6712 { MKTAG('t','r','a','k'), mov_read_trak },
6713 { MKTAG('t','r','a','f'), mov_read_default },
6714 { MKTAG('t','r','e','f'), mov_read_default },
6715 { MKTAG('t','m','c','d'), mov_read_tmcd },
6716 { MKTAG('c','h','a','p'), mov_read_chap },
6717 { MKTAG('t','r','e','x'), mov_read_trex },
6718 { MKTAG('t','r','u','n'), mov_read_trun },
6719 { MKTAG('u','d','t','a'), mov_read_default },
6720 { MKTAG('w','a','v','e'), mov_read_wave },
6721 { MKTAG('e','s','d','s'), mov_read_esds },
6722 { MKTAG('d','a','c','3'), mov_read_dac3 }, /* AC-3 info */
6723 { MKTAG('d','e','c','3'), mov_read_dec3 }, /* EAC-3 info */
6724 { MKTAG('d','d','t','s'), mov_read_ddts }, /* DTS audio descriptor */
6725 { MKTAG('w','i','d','e'), mov_read_wide }, /* place holder */
6726 { MKTAG('w','f','e','x'), mov_read_wfex },
6727 { MKTAG('c','m','o','v'), mov_read_cmov },
6728 { MKTAG('c','h','a','n'), mov_read_chan }, /* channel layout */
6729 { MKTAG('d','v','c','1'), mov_read_dvc1 },
6730 { MKTAG('s','b','g','p'), mov_read_sbgp },
6731 { MKTAG('h','v','c','C'), mov_read_glbl },
6732 { MKTAG('u','u','i','d'), mov_read_uuid },
6733 { MKTAG('C','i','n', 0x8e), mov_read_targa_y216 },
6734 { MKTAG('f','r','e','e'), mov_read_free },
6735 { MKTAG('-','-','-','-'), mov_read_custom },
6736 { MKTAG('s','i','n','f'), mov_read_default },
6737 { MKTAG('f','r','m','a'), mov_read_frma },
6738 { MKTAG('s','e','n','c'), mov_read_senc },
6739 { MKTAG('s','a','i','z'), mov_read_saiz },
6740 { MKTAG('s','a','i','o'), mov_read_saio },
6741 { MKTAG('p','s','s','h'), mov_read_pssh },
6742 { MKTAG('s','c','h','m'), mov_read_schm },
6743 { MKTAG('s','c','h','i'), mov_read_default },
6744 { MKTAG('t','e','n','c'), mov_read_tenc },
6745 { MKTAG('d','f','L','a'), mov_read_dfla },
6746 { MKTAG('s','t','3','d'), mov_read_st3d }, /* stereoscopic 3D video box */
6747 { MKTAG('s','v','3','d'), mov_read_sv3d }, /* spherical video box */
6748 { MKTAG('d','O','p','s'), mov_read_dops },
6749 { MKTAG('S','m','D','m'), mov_read_smdm },
6750 { MKTAG('C','o','L','L'), mov_read_coll },
6751 { MKTAG('v','p','c','C'), mov_read_vpcc },
6752 { MKTAG('m','d','c','v'), mov_read_mdcv },
6753 { MKTAG('c','l','l','i'), mov_read_clli },
6754 { 0, NULL }
6755 };
6756 
6758 {
6759  int64_t total_size = 0;
6760  MOVAtom a;
6761  int i;
6762 
6763  if (c->atom_depth > 10) {
6764  av_log(c->fc, AV_LOG_ERROR, "Atoms too deeply nested\n");
6765  return AVERROR_INVALIDDATA;
6766  }
6767  c->atom_depth ++;
6768 
6769  if (atom.size < 0)
6770  atom.size = INT64_MAX;
6771  while (total_size <= atom.size - 8 && !avio_feof(pb)) {
6773  a.size = atom.size;
6774  a.type=0;
6775  if (atom.size >= 8) {
6776  a.size = avio_rb32(pb);
6777  a.type = avio_rl32(pb);
6778  if (a.type == MKTAG('f','r','e','e') &&
6779  a.size >= 8 &&
6781  c->moov_retry) {
6782  uint8_t buf[8];
6783  uint32_t *type = (uint32_t *)buf + 1;
6784  if (avio_read(pb, buf, 8) != 8)
6785  return AVERROR_INVALIDDATA;
6786  avio_seek(pb, -8, SEEK_CUR);
6787  if (*type == MKTAG('m','v','h','d') ||
6788  *type == MKTAG('c','m','o','v')) {
6789  av_log(c->fc, AV_LOG_ERROR, "Detected moov in a free atom.\n");
6790  a.type = MKTAG('m','o','o','v');
6791  }
6792  }
6793  if (atom.type != MKTAG('r','o','o','t') &&
6794  atom.type != MKTAG('m','o','o','v'))
6795  {
6796  if (a.type == MKTAG('t','r','a','k') || a.type == MKTAG('m','d','a','t'))
6797  {
6798  av_log(c->fc, AV_LOG_ERROR, "Broken file, trak/mdat not at top-level\n");
6799  avio_skip(pb, -8);
6800  c->atom_depth --;
6801  return 0;
6802  }
6803  }
6804  total_size += 8;
6805  if (a.size == 1 && total_size + 8 <= atom.size) { /* 64 bit extended size */
6806  a.size = avio_rb64(pb) - 8;
6807  total_size += 8;
6808  }
6809  }
6810  av_log(c->fc, AV_LOG_TRACE, "type:'%s' parent:'%s' sz: %"PRId64" %"PRId64" %"PRId64"\n",
6811  av_fourcc2str(a.type), av_fourcc2str(atom.type), a.size, total_size, atom.size);
6812  if (a.size == 0) {
6813  a.size = atom.size - total_size + 8;
6814  }
6815  a.size -= 8;
6816  if (a.size < 0)
6817  break;
6818  a.size = FFMIN(a.size, atom.size - total_size);
6819 
6820  for (i = 0; mov_default_parse_table[i].type; i++)
6821  if (mov_default_parse_table[i].type == a.type) {
6822  parse = mov_default_parse_table[i].parse;
6823  break;
6824  }
6825 
6826  // container is user data
6827  if (!parse && (atom.type == MKTAG('u','d','t','a') ||
6828  atom.type == MKTAG('i','l','s','t')))
6830 
6831  // Supports parsing the QuickTime Metadata Keys.
6832  // https://developer.apple.com/library/mac/documentation/QuickTime/QTFF/Metadata/Metadata.html
6833  if (!parse && c->found_hdlr_mdta &&
6834  atom.type == MKTAG('m','e','t','a') &&
6835  a.type == MKTAG('k','e','y','s')) {
6836  parse = mov_read_keys;
6837  }
6838 
6839  if (!parse) { /* skip leaf atoms data */
6840  avio_skip(pb, a.size);
6841  } else {
6842  int64_t start_pos = avio_tell(pb);
6843  int64_t left;
6844  int err = parse(c, pb, a);
6845  if (err < 0) {
6846  c->atom_depth --;
6847  return err;
6848  }
6849  if (c->found_moov && c->found_mdat &&
6851  start_pos + a.size == avio_size(pb))) {
6853  c->next_root_atom = start_pos + a.size;
6854  c->atom_depth --;
6855  return 0;
6856  }
6857  left = a.size - avio_tell(pb) + start_pos;
6858  if (left > 0) /* skip garbage at atom end */
6859  avio_skip(pb, left);
6860  else if (left < 0) {
6861  av_log(c->fc, AV_LOG_WARNING,
6862  "overread end of atom '%.4s' by %"PRId64" bytes\n",
6863  (char*)&a.type, -left);
6864  avio_seek(pb, left, SEEK_CUR);
6865  }
6866  }
6867 
6868  total_size += a.size;
6869  }
6870 
6871  if (total_size < atom.size && atom.size < 0x7ffff)
6872  avio_skip(pb, atom.size - total_size);
6873 
6874  c->atom_depth --;
6875  return 0;
6876 }
6877 
6878 static int mov_probe(AVProbeData *p)
6879 {
6880  int64_t offset;
6881  uint32_t tag;
6882  int score = 0;
6883  int moov_offset = -1;
6884 
6885  /* check file header */
6886  offset = 0;
6887  for (;;) {
6888  /* ignore invalid offset */
6889  if ((offset + 8) > (unsigned int)p->buf_size)
6890  break;
6891  tag = AV_RL32(p->buf + offset + 4);
6892  switch(tag) {
6893  /* check for obvious tags */
6894  case MKTAG('m','o','o','v'):
6895  moov_offset = offset + 4;
6896  case MKTAG('m','d','a','t'):
6897  case MKTAG('p','n','o','t'): /* detect movs with preview pics like ew.mov and april.mov */
6898  case MKTAG('u','d','t','a'): /* Packet Video PVAuthor adds this and a lot of more junk */
6899  case MKTAG('f','t','y','p'):
6900  if (AV_RB32(p->buf+offset) < 8 &&
6901  (AV_RB32(p->buf+offset) != 1 ||
6902  offset + 12 > (unsigned int)p->buf_size ||
6903  AV_RB64(p->buf+offset + 8) == 0)) {
6904  score = FFMAX(score, AVPROBE_SCORE_EXTENSION);
6905  } else if (tag == MKTAG('f','t','y','p') &&
6906  ( AV_RL32(p->buf + offset + 8) == MKTAG('j','p','2',' ')
6907  || AV_RL32(p->buf + offset + 8) == MKTAG('j','p','x',' ')
6908  )) {
6909  score = FFMAX(score, 5);
6910  } else {
6911  score = AVPROBE_SCORE_MAX;
6912  }
6913  offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset;
6914  break;
6915  /* those are more common words, so rate then a bit less */
6916  case MKTAG('e','d','i','w'): /* xdcam files have reverted first tags */
6917  case MKTAG('w','i','d','e'):
6918  case MKTAG('f','r','e','e'):
6919  case MKTAG('j','u','n','k'):
6920  case MKTAG('p','i','c','t'):
6921  score = FFMAX(score, AVPROBE_SCORE_MAX - 5);
6922  offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset;
6923  break;
6924  case MKTAG(0x82,0x82,0x7f,0x7d):
6925  case MKTAG('s','k','i','p'):
6926  case MKTAG('u','u','i','d'):
6927  case MKTAG('p','r','f','l'):
6928  /* if we only find those cause probedata is too small at least rate them */
6929  score = FFMAX(score, AVPROBE_SCORE_EXTENSION);
6930  offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset;
6931  break;
6932  default:
6933  offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset;
6934  }
6935  }
6936  if(score > AVPROBE_SCORE_MAX - 50 && moov_offset != -1) {
6937  /* moov atom in the header - we should make sure that this is not a
6938  * MOV-packed MPEG-PS */
6939  offset = moov_offset;
6940 
6941  while(offset < (p->buf_size - 16)){ /* Sufficient space */
6942  /* We found an actual hdlr atom */
6943  if(AV_RL32(p->buf + offset ) == MKTAG('h','d','l','r') &&
6944  AV_RL32(p->buf + offset + 8) == MKTAG('m','h','l','r') &&
6945  AV_RL32(p->buf + offset + 12) == MKTAG('M','P','E','G')){
6946  av_log(NULL, AV_LOG_WARNING, "Found media data tag MPEG indicating this is a MOV-packed MPEG-PS.\n");
6947  /* We found a media handler reference atom describing an
6948  * MPEG-PS-in-MOV, return a
6949  * low score to force expanding the probe window until
6950  * mpegps_probe finds what it needs */
6951  return 5;
6952  }else
6953  /* Keep looking */
6954  offset+=2;
6955  }
6956  }
6957 
6958  return score;
6959 }
6960 
6961 // must be done after parsing all trak because there's no order requirement
6963 {
6964  MOVContext *mov = s->priv_data;
6965  AVStream *st;
6966  MOVStreamContext *sc;
6967  int64_t cur_pos;
6968  int i, j;
6969  int chapter_track;
6970 
6971  for (j = 0; j < mov->nb_chapter_tracks; j++) {
6972  chapter_track = mov->chapter_tracks[j];
6973  st = NULL;
6974  for (i = 0; i < s->nb_streams; i++)
6975  if (s->streams[i]->id == chapter_track) {
6976  st = s->streams[i];
6977  break;
6978  }
6979  if (!st) {
6980  av_log(s, AV_LOG_ERROR, "Referenced QT chapter track not found\n");
6981  continue;
6982  }
6983 
6984  sc = st->priv_data;
6985  cur_pos = avio_tell(sc->pb);
6986 
6987  if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
6989  if (st->nb_index_entries) {
6990  // Retrieve the first frame, if possible
6991  AVPacket pkt;
6992  AVIndexEntry *sample = &st->index_entries[0];
6993  if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
6994  av_log(s, AV_LOG_ERROR, "Failed to retrieve first frame\n");
6995  goto finish;
6996  }
6997 
6998  if (av_get_packet(sc->pb, &pkt, sample->size) < 0)
6999  goto finish;
7000 
7001  st->attached_pic = pkt;
7002  st->attached_pic.stream_index = st->index;
7004  }
7005  } else {
7008  st->discard = AVDISCARD_ALL;
7009  for (i = 0; i < st->nb_index_entries; i++) {
7010  AVIndexEntry *sample = &st->index_entries[i];
7011  int64_t end = i+1 < st->nb_index_entries ? st->index_entries[i+1].timestamp : st->duration;
7012  uint8_t *title;
7013  uint16_t ch;
7014  int len, title_len;
7015 
7016  if (end < sample->timestamp) {
7017  av_log(s, AV_LOG_WARNING, "ignoring stream duration which is shorter than chapters\n");
7018  end = AV_NOPTS_VALUE;
7019  }
7020 
7021  if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
7022  av_log(s, AV_LOG_ERROR, "Chapter %d not found in file\n", i);
7023  goto finish;
7024  }
7025 
7026  // the first two bytes are the length of the title
7027  len = avio_rb16(sc->pb);
7028  if (len > sample->size-2)
7029  continue;
7030  title_len = 2*len + 1;
7031  if (!(title = av_mallocz(title_len)))
7032  goto finish;
7033 
7034  // The samples could theoretically be in any encoding if there's an encd
7035  // atom following, but in practice are only utf-8 or utf-16, distinguished
7036  // instead by the presence of a BOM
7037  if (!len) {
7038  title[0] = 0;
7039  } else {
7040  ch = avio_rb16(sc->pb);
7041  if (ch == 0xfeff)
7042  avio_get_str16be(sc->pb, len, title, title_len);
7043  else if (ch == 0xfffe)
7044  avio_get_str16le(sc->pb, len, title, title_len);
7045  else {
7046  AV_WB16(title, ch);
7047  if (len == 1 || len == 2)
7048  title[len] = 0;
7049  else
7050  avio_get_str(sc->pb, INT_MAX, title + 2, len - 1);
7051  }
7052  }
7053 
7054  avpriv_new_chapter(s, i, st->time_base, sample->timestamp, end, title);
7055  av_freep(&title);
7056  }
7057  }
7058 finish:
7059  avio_seek(sc->pb, cur_pos, SEEK_SET);
7060  }
7061 }
7062 
7064  uint32_t value, int flags)
7065 {
7066  AVTimecode tc;
7067  char buf[AV_TIMECODE_STR_SIZE];
7068  AVRational rate = st->avg_frame_rate;
7069  int ret = av_timecode_init(&tc, rate, flags, 0, s);
7070  if (ret < 0)
7071  return ret;
7072  av_dict_set(&st->metadata, "timecode",
7073  av_timecode_make_string(&tc, buf, value), 0);
7074  return 0;
7075 }
7076 
7078 {
7079  MOVStreamContext *sc = st->priv_data;
7080  char buf[AV_TIMECODE_STR_SIZE];
7081  int64_t cur_pos = avio_tell(sc->pb);
7082  int hh, mm, ss, ff, drop;
7083 
7084  if (!st->nb_index_entries)
7085  return -1;
7086 
7087  avio_seek(sc->pb, st->index_entries->pos, SEEK_SET);
7088  avio_skip(s->pb, 13);
7089  hh = avio_r8(s->pb);
7090  mm = avio_r8(s->pb);
7091  ss = avio_r8(s->pb);
7092  drop = avio_r8(s->pb);
7093  ff = avio_r8(s->pb);
7094  snprintf(buf, AV_TIMECODE_STR_SIZE, "%02d:%02d:%02d%c%02d",
7095  hh, mm, ss, drop ? ';' : ':', ff);
7096  av_dict_set(&st->metadata, "timecode", buf, 0);
7097 
7098  avio_seek(sc->pb, cur_pos, SEEK_SET);
7099  return 0;
7100 }
7101 
7103 {
7104  MOVStreamContext *sc = st->priv_data;
7105  int flags = 0;
7106  int64_t cur_pos = avio_tell(sc->pb);
7107  uint32_t value;
7108 
7109  if (!st->nb_index_entries)
7110  return -1;
7111 
7112  avio_seek(sc->pb, st->index_entries->pos, SEEK_SET);
7113  value = avio_rb32(s->pb);
7114 
7115  if (sc->tmcd_flags & 0x0001) flags |= AV_TIMECODE_FLAG_DROPFRAME;
7116  if (sc->tmcd_flags & 0x0002) flags |= AV_TIMECODE_FLAG_24HOURSMAX;
7117  if (sc->tmcd_flags & 0x0004) flags |= AV_TIMECODE_FLAG_ALLOWNEGATIVE;
7118 
7119  /* Assume Counter flag is set to 1 in tmcd track (even though it is likely
7120  * not the case) and thus assume "frame number format" instead of QT one.
7121  * No sample with tmcd track can be found with a QT timecode at the moment,
7122  * despite what the tmcd track "suggests" (Counter flag set to 0 means QT
7123  * format). */
7124  parse_timecode_in_framenum_format(s, st, value, flags);
7125 
7126  avio_seek(sc->pb, cur_pos, SEEK_SET);
7127  return 0;
7128 }
7129 
7131  int i;
7132  if (!index || !*index) return;
7133  for (i = 0; i < (*index)->nb_encrypted_samples; i++) {
7134  av_encryption_info_free((*index)->encrypted_samples[i]);
7135  }
7136  av_freep(&(*index)->encrypted_samples);
7137  av_freep(&(*index)->auxiliary_info_sizes);
7138  av_freep(&(*index)->auxiliary_offsets);
7139  av_freep(index);
7140 }
7141 
7143 {
7144  MOVContext *mov = s->priv_data;
7145  int i, j;
7146 
7147  for (i = 0; i < s->nb_streams; i++) {
7148  AVStream *st = s->streams[i];
7149  MOVStreamContext *sc = st->priv_data;
7150 
7151  if (!sc)
7152  continue;
7153 
7154  av_freep(&sc->ctts_data);
7155  for (j = 0; j < sc->drefs_count; j++) {
7156  av_freep(&sc->drefs[j].path);
7157  av_freep(&sc->drefs[j].dir);
7158  }
7159  av_freep(&sc->drefs);
7160 
7161  sc->drefs_count = 0;
7162 
7163  if (!sc->pb_is_copied)
7164  ff_format_io_close(s, &sc->pb);
7165 
7166  sc->pb = NULL;
7167  av_freep(&sc->chunk_offsets);
7168  av_freep(&sc->stsc_data);
7169  av_freep(&sc->sample_sizes);
7170  av_freep(&sc->keyframes);
7171  av_freep(&sc->stts_data);
7172  av_freep(&sc->stps_data);
7173  av_freep(&sc->elst_data);
7174  av_freep(&sc->rap_group);
7175  av_freep(&sc->display_matrix);
7176  av_freep(&sc->index_ranges);
7177 
7178  if (sc->extradata)
7179  for (j = 0; j < sc->stsd_count; j++)
7180  av_free(sc->extradata[j]);
7181  av_freep(&sc->extradata);
7182  av_freep(&sc->extradata_size);
7183 
7187 
7188  av_freep(&sc->stereo3d);
7189  av_freep(&sc->spherical);
7190  av_freep(&sc->mastering);
7191  av_freep(&sc->coll);
7192  }
7193 
7194  if (mov->dv_demux) {
7196  mov->dv_fctx = NULL;
7197  }
7198 
7199  if (mov->meta_keys) {
7200  for (i = 1; i < mov->meta_keys_count; i++) {
7201  av_freep(&mov->meta_keys[i]);
7202  }
7203  av_freep(&mov->meta_keys);
7204  }
7205 
7206  av_freep(&mov->trex_data);
7207  av_freep(&mov->bitrates);
7208 
7209  for (i = 0; i < mov->frag_index.nb_items; i++) {
7211  for (j = 0; j < mov->frag_index.item[i].nb_stream_info; j++) {
7212  mov_free_encryption_index(&frag[j].encryption_index);
7213  }
7214  av_freep(&mov->frag_index.item[i].stream_info);
7215  }
7216  av_freep(&mov->frag_index.item);
7217 
7218  av_freep(&mov->aes_decrypt);
7219  av_freep(&mov->chapter_tracks);
7220 
7221  return 0;
7222 }
7223 
7224 static int tmcd_is_referenced(AVFormatContext *s, int tmcd_id)
7225 {
7226  int i;
7227 
7228  for (i = 0; i < s->nb_streams; i++) {
7229  AVStream *st = s->streams[i];
7230  MOVStreamContext *sc = st->priv_data;
7231 
7232  if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
7233  sc->timecode_track == tmcd_id)
7234  return 1;
7235  }
7236  return 0;
7237 }
7238 
7239 /* look for a tmcd track not referenced by any video track, and export it globally */
7241 {
7242  int i;
7243 
7244  for (i = 0; i < s->nb_streams; i++) {
7245  AVStream *st = s->streams[i];
7246 
7247  if (st->codecpar->codec_tag == MKTAG('t','m','c','d') &&
7248  !tmcd_is_referenced(s, i + 1)) {
7249  AVDictionaryEntry *tcr = av_dict_get(st->metadata, "timecode", NULL, 0);
7250  if (tcr) {
7251  av_dict_set(&s->metadata, "timecode", tcr->value, 0);
7252  break;
7253  }
7254  }
7255  }
7256 }
7257 
7258 static int read_tfra(MOVContext *mov, AVIOContext *f)
7259 {
7260  int version, fieldlength, i, j;
7261  int64_t pos = avio_tell(f);
7262  uint32_t size = avio_rb32(f);
7263  unsigned track_id, item_count;
7264 
7265  if (avio_rb32(f) != MKBETAG('t', 'f', 'r', 'a')) {
7266  return 1;
7267  }
7268  av_log(mov->fc, AV_LOG_VERBOSE, "found tfra\n");
7269 
7270  version = avio_r8(f);
7271  avio_rb24(f);
7272  track_id = avio_rb32(f);
7273  fieldlength = avio_rb32(f);
7274  item_count = avio_rb32(f);
7275  for (i = 0; i < item_count; i++) {
7276  int64_t time, offset;
7277  int index;
7278  MOVFragmentStreamInfo * frag_stream_info;
7279 
7280  if (avio_feof(f)) {
7281  return AVERROR_INVALIDDATA;
7282  }
7283 
7284  if (version == 1) {
7285  time = avio_rb64(f);
7286  offset = avio_rb64(f);
7287  } else {
7288  time = avio_rb32(f);
7289  offset = avio_rb32(f);
7290  }
7291 
7292  // The first sample of each stream in a fragment is always a random
7293  // access sample. So it's entry in the tfra can be used as the
7294  // initial PTS of the fragment.
7295  index = update_frag_index(mov, offset);
7296  frag_stream_info = get_frag_stream_info(&mov->frag_index, index, track_id);
7297  if (frag_stream_info &&
7298  frag_stream_info->first_tfra_pts == AV_NOPTS_VALUE)
7299  frag_stream_info->first_tfra_pts = time;
7300 
7301  for (j = 0; j < ((fieldlength >> 4) & 3) + 1; j++)
7302  avio_r8(f);
7303  for (j = 0; j < ((fieldlength >> 2) & 3) + 1; j++)
7304  avio_r8(f);
7305  for (j = 0; j < ((fieldlength >> 0) & 3) + 1; j++)
7306  avio_r8(f);
7307  }
7308 
7309  avio_seek(f, pos + size, SEEK_SET);
7310  return 0;
7311 }
7312 
7314 {
7315  int64_t stream_size = avio_size(f);
7316  int64_t original_pos = avio_tell(f);
7317  int64_t seek_ret;
7318  int32_t mfra_size;
7319  int ret = -1;
7320  if ((seek_ret = avio_seek(f, stream_size - 4, SEEK_SET)) < 0) {
7321  ret = seek_ret;
7322  goto fail;
7323  }
7324  mfra_size = avio_rb32(f);
7325  if (mfra_size < 0 || mfra_size > stream_size) {
7326  av_log(c->fc, AV_LOG_DEBUG, "doesn't look like mfra (unreasonable size)\n");
7327  goto fail;
7328  }
7329  if ((seek_ret = avio_seek(f, -mfra_size, SEEK_CUR)) < 0) {
7330  ret = seek_ret;
7331  goto fail;
7332  }
7333  if (avio_rb32(f) != mfra_size) {
7334  av_log(c->fc, AV_LOG_DEBUG, "doesn't look like mfra (size mismatch)\n");
7335  goto fail;
7336  }
7337  if (avio_rb32(f) != MKBETAG('m', 'f', 'r', 'a')) {
7338  av_log(c->fc, AV_LOG_DEBUG, "doesn't look like mfra (tag mismatch)\n");
7339  goto fail;
7340  }
7341  av_log(c->fc, AV_LOG_VERBOSE, "stream has mfra\n");
7342  do {
7343  ret = read_tfra(c, f);
7344  if (ret < 0)
7345  goto fail;
7346  } while (!ret);
7347  ret = 0;
7348 fail:
7349  seek_ret = avio_seek(f, original_pos, SEEK_SET);
7350  if (seek_ret < 0) {
7351  av_log(c->fc, AV_LOG_ERROR,
7352  "failed to seek back after looking for mfra\n");
7353  ret = seek_ret;
7354  }
7355  return ret;
7356 }
7357 
7359 {
7360  MOVContext *mov = s->priv_data;
7361  AVIOContext *pb = s->pb;
7362  int j, err;
7363  MOVAtom atom = { AV_RL32("root") };
7364  int i;
7365 
7366  if (mov->decryption_key_len != 0 && mov->decryption_key_len != AES_CTR_KEY_SIZE) {
7367  av_log(s, AV_LOG_ERROR, "Invalid decryption key len %d expected %d\n",
7369  return AVERROR(EINVAL);
7370  }
7371 
7372  mov->fc = s;
7373  mov->trak_index = -1;
7374  /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
7375  if (pb->seekable & AVIO_SEEKABLE_NORMAL)
7376  atom.size = avio_size(pb);
7377  else
7378  atom.size = INT64_MAX;
7379 
7380  /* check MOV header */
7381  do {
7382  if (mov->moov_retry)
7383  avio_seek(pb, 0, SEEK_SET);
7384  if ((err = mov_read_default(mov, pb, atom)) < 0) {
7385  av_log(s, AV_LOG_ERROR, "error reading header\n");
7386  mov_read_close(s);
7387  return err;
7388  }
7389  } while ((pb->seekable & AVIO_SEEKABLE_NORMAL) && !mov->found_moov && !mov->moov_retry++);
7390  if (!mov->found_moov) {
7391  av_log(s, AV_LOG_ERROR, "moov atom not found\n");
7392  mov_read_close(s);
7393  return AVERROR_INVALIDDATA;
7394  }
7395  av_log(mov->fc, AV_LOG_TRACE, "on_parse_exit_offset=%"PRId64"\n", avio_tell(pb));
7396 
7397  if (pb->seekable & AVIO_SEEKABLE_NORMAL) {
7398  if (mov->nb_chapter_tracks > 0 && !mov->ignore_chapters)
7399  mov_read_chapters(s);
7400  for (i = 0; i < s->nb_streams; i++)
7401  if (s->streams[i]->codecpar->codec_tag == AV_RL32("tmcd")) {
7402  mov_read_timecode_track(s, s->streams[i]);
7403  } else if (s->streams[i]->codecpar->codec_tag == AV_RL32("rtmd")) {
7404  mov_read_rtmd_track(s, s->streams[i]);
7405  }
7406  }
7407 
7408  /* copy timecode metadata from tmcd tracks to the related video streams */
7409  for (i = 0; i < s->nb_streams; i++) {
7410  AVStream *st = s->streams[i];
7411  MOVStreamContext *sc = st->priv_data;
7412  if (sc->timecode_track > 0) {
7413  AVDictionaryEntry *tcr;
7414  int tmcd_st_id = -1;
7415 
7416  for (j = 0; j < s->nb_streams; j++)
7417  if (s->streams[j]->id == sc->timecode_track)
7418  tmcd_st_id = j;
7419 
7420  if (tmcd_st_id < 0 || tmcd_st_id == i)
7421  continue;
7422  tcr = av_dict_get(s->streams[tmcd_st_id]->metadata, "timecode", NULL, 0);
7423  if (tcr)
7424  av_dict_set(&st->metadata, "timecode", tcr->value, 0);
7425  }
7426  }
7428 
7429  for (i = 0; i < s->nb_streams; i++) {
7430  AVStream *st = s->streams[i];
7431  MOVStreamContext *sc = st->priv_data;
7432  fix_timescale(mov, sc);
7434  st->skip_samples = sc->start_pad;
7435  }
7436  if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && sc->nb_frames_for_fps > 0 && sc->duration_for_fps > 0)
7438  sc->time_scale*(int64_t)sc->nb_frames_for_fps, sc->duration_for_fps, INT_MAX);
7440  if (st->codecpar->width <= 0 || st->codecpar->height <= 0) {
7441  st->codecpar->width = sc->width;
7442  st->codecpar->height = sc->height;
7443  }
7445  if ((err = mov_rewrite_dvd_sub_extradata(st)) < 0)
7446  return err;
7447  }
7448  }
7449  if (mov->handbrake_version &&
7450  mov->handbrake_version <= 1000000*0 + 1000*10 + 2 && // 0.10.2
7452  ) {
7453  av_log(s, AV_LOG_VERBOSE, "Forcing full parsing for mp3 stream\n");
7455  }
7456  }
7457 
7458  if (mov->trex_data) {
7459  for (i = 0; i < s->nb_streams; i++) {
7460  AVStream *st = s->streams[i];
7461  MOVStreamContext *sc = st->priv_data;
7462  if (st->duration > 0) {
7463  if (sc->data_size > INT64_MAX / sc->time_scale / 8) {
7464  av_log(s, AV_LOG_ERROR, "Overflow during bit rate calculation %"PRId64" * 8 * %d\n",
7465  sc->data_size, sc->time_scale);
7466  mov_read_close(s);
7467  return AVERROR_INVALIDDATA;
7468  }
7469  st->codecpar->bit_rate = sc->data_size * 8 * sc->time_scale / st->duration;
7470  }
7471  }
7472  }
7473 
7474  if (mov->use_mfra_for > 0) {
7475  for (i = 0; i < s->nb_streams; i++) {
7476  AVStream *st = s->streams[i];
7477  MOVStreamContext *sc = st->priv_data;
7478  if (sc->duration_for_fps > 0) {
7479  if (sc->data_size > INT64_MAX / sc->time_scale / 8) {
7480  av_log(s, AV_LOG_ERROR, "Overflow during bit rate calculation %"PRId64" * 8 * %d\n",
7481  sc->data_size, sc->time_scale);
7482  mov_read_close(s);
7483  return AVERROR_INVALIDDATA;
7484  }
7485  st->codecpar->bit_rate = sc->data_size * 8 * sc->time_scale /
7486  sc->duration_for_fps;
7487  }
7488  }
7489  }
7490 
7491  for (i = 0; i < mov->bitrates_count && i < s->nb_streams; i++) {
7492  if (mov->bitrates[i]) {
7493  s->streams[i]->codecpar->bit_rate = mov->bitrates[i];
7494  }
7495  }
7496 
7497  ff_rfps_calculate(s);
7498 
7499  for (i = 0; i < s->nb_streams; i++) {
7500  AVStream *st = s->streams[i];
7501  MOVStreamContext *sc = st->priv_data;
7502 
7503  switch (st->codecpar->codec_type) {
7504  case AVMEDIA_TYPE_AUDIO:
7505  err = ff_replaygain_export(st, s->metadata);
7506  if (err < 0) {
7507  mov_read_close(s);
7508  return err;
7509  }
7510  break;
7511  case AVMEDIA_TYPE_VIDEO:
7512  if (sc->display_matrix) {
7514  sizeof(int32_t) * 9);
7515  if (err < 0)
7516  return err;
7517 
7518  sc->display_matrix = NULL;
7519  }
7520  if (sc->stereo3d) {
7522  (uint8_t *)sc->stereo3d,
7523  sizeof(*sc->stereo3d));
7524  if (err < 0)
7525  return err;
7526 
7527  sc->stereo3d = NULL;
7528  }
7529  if (sc->spherical) {
7531  (uint8_t *)sc->spherical,
7532  sc->spherical_size);
7533  if (err < 0)
7534  return err;
7535 
7536  sc->spherical = NULL;
7537  }
7538  if (sc->mastering) {
7540  (uint8_t *)sc->mastering,
7541  sizeof(*sc->mastering));
7542  if (err < 0)
7543  return err;
7544 
7545  sc->mastering = NULL;
7546  }
7547  if (sc->coll) {
7549  (uint8_t *)sc->coll,
7550  sc->coll_size);
7551  if (err < 0)
7552  return err;
7553 
7554  sc->coll = NULL;
7555  }
7556  break;
7557  }
7558  }
7560 
7561  for (i = 0; i < mov->frag_index.nb_items; i++)
7562  if (mov->frag_index.item[i].moof_offset <= mov->fragment.moof_offset)
7563  mov->frag_index.item[i].headers_read = 1;
7564 
7565  return 0;
7566 }
7567 
7569 {
7571  int64_t best_dts = INT64_MAX;
7572  int i;
7573  for (i = 0; i < s->nb_streams; i++) {
7574  AVStream *avst = s->streams[i];
7575  MOVStreamContext *msc = avst->priv_data;
7576  if (msc->pb && msc->current_sample < avst->nb_index_entries) {
7577  AVIndexEntry *current_sample = &avst->index_entries[msc->current_sample];
7578  int64_t dts = av_rescale(current_sample->timestamp, AV_TIME_BASE, msc->time_scale);
7579  av_log(s, AV_LOG_TRACE, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
7580  if (!sample || (!(s->pb->seekable & AVIO_SEEKABLE_NORMAL) && current_sample->pos < sample->pos) ||
7581  ((s->pb->seekable & AVIO_SEEKABLE_NORMAL) &&
7582  ((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb &&
7583  ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
7584  (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) {
7585  sample = current_sample;
7586  best_dts = dts;
7587  *st = avst;
7588  }
7589  }
7590  }
7591  return sample;
7592 }
7593 
7594 static int should_retry(AVIOContext *pb, int error_code) {
7595  if (error_code == AVERROR_EOF || avio_feof(pb))
7596  return 0;
7597 
7598  return 1;
7599 }
7600 
7601 static int mov_switch_root(AVFormatContext *s, int64_t target, int index)
7602 {
7603  int ret;
7604  MOVContext *mov = s->priv_data;
7605 
7606  if (index >= 0 && index < mov->frag_index.nb_items)
7607  target = mov->frag_index.item[index].moof_offset;
7608  if (avio_seek(s->pb, target, SEEK_SET) != target) {
7609  av_log(mov->fc, AV_LOG_ERROR, "root atom offset 0x%"PRIx64": partial file\n", target);
7610  return AVERROR_INVALIDDATA;
7611  }
7612 
7613  mov->next_root_atom = 0;
7614  if (index < 0 || index >= mov->frag_index.nb_items)
7615  index = search_frag_moof_offset(&mov->frag_index, target);
7616  if (index < mov->frag_index.nb_items) {
7617  if (index + 1 < mov->frag_index.nb_items)
7618  mov->next_root_atom = mov->frag_index.item[index + 1].moof_offset;
7619  if (mov->frag_index.item[index].headers_read)
7620  return 0;
7621  mov->frag_index.item[index].headers_read = 1;
7622  }
7623 
7624  mov->found_mdat = 0;
7625 
7626  ret = mov_read_default(mov, s->pb, (MOVAtom){ AV_RL32("root"), INT64_MAX });
7627  if (ret < 0)
7628  return ret;
7629  if (avio_feof(s->pb))
7630  return AVERROR_EOF;
7631  av_log(s, AV_LOG_TRACE, "read fragments, offset 0x%"PRIx64"\n", avio_tell(s->pb));
7632 
7633  return 1;
7634 }
7635 
7637 {
7638  uint8_t *side, *extradata;
7639  int extradata_size;
7640 
7641  /* Save the current index. */
7642  sc->last_stsd_index = sc->stsc_data[sc->stsc_index].id - 1;
7643 
7644  /* Notify the decoder that extradata changed. */
7645  extradata_size = sc->extradata_size[sc->last_stsd_index];
7646  extradata = sc->extradata[sc->last_stsd_index];
7647  if (extradata_size > 0 && extradata) {
7648  side = av_packet_new_side_data(pkt,
7650  extradata_size);
7651  if (!side)
7652  return AVERROR(ENOMEM);
7653  memcpy(side, extradata, extradata_size);
7654  }
7655 
7656  return 0;
7657 }
7658 
7660 {
7661  MOVContext *mov = s->priv_data;
7662  MOVStreamContext *sc;
7664  AVStream *st = NULL;
7665  int64_t current_index;
7666  int ret;
7667  mov->fc = s;
7668  retry:
7669  sample = mov_find_next_sample(s, &st);
7670  if (!sample || (mov->next_root_atom && sample->pos > mov->next_root_atom)) {
7671  if (!mov->next_root_atom)
7672  return AVERROR_EOF;
7673  if ((ret = mov_switch_root(s, mov->next_root_atom, -1)) < 0)
7674  return ret;
7675  goto retry;
7676  }
7677  sc = st->priv_data;
7678  /* must be done just before reading, to avoid infinite loop on sample */
7679  current_index = sc->current_index;
7681 
7682  if (mov->next_root_atom) {
7683  sample->pos = FFMIN(sample->pos, mov->next_root_atom);
7684  sample->size = FFMIN(sample->size, (mov->next_root_atom - sample->pos));
7685  }
7686 
7687  if (st->discard != AVDISCARD_ALL) {
7688  int64_t ret64 = avio_seek(sc->pb, sample->pos, SEEK_SET);
7689  if (ret64 != sample->pos) {
7690  av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
7691  sc->ffindex, sample->pos);
7692  if (should_retry(sc->pb, ret64)) {
7694  }
7695  return AVERROR_INVALIDDATA;
7696  }
7697 
7698  if( st->discard == AVDISCARD_NONKEY && 0==(sample->flags & AVINDEX_KEYFRAME) ) {
7699  av_log(mov->fc, AV_LOG_DEBUG, "Nonkey frame from stream %d discarded due to AVDISCARD_NONKEY\n", sc->ffindex);
7700  goto retry;
7701  }
7702 
7703  ret = av_get_packet(sc->pb, pkt, sample->size);
7704  if (ret < 0) {
7705  if (should_retry(sc->pb, ret)) {
7707  }
7708  return ret;
7709  }
7710  if (sc->has_palette) {
7711  uint8_t *pal;
7712 
7714  if (!pal) {
7715  av_log(mov->fc, AV_LOG_ERROR, "Cannot append palette to packet\n");
7716  } else {
7717  memcpy(pal, sc->palette, AVPALETTE_SIZE);
7718  sc->has_palette = 0;
7719  }
7720  }
7721 #if CONFIG_DV_DEMUXER
7722  if (mov->dv_demux && sc->dv_audio_container) {
7723  avpriv_dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size, pkt->pos);
7724  av_freep(&pkt->data);
7725  pkt->size = 0;
7726  ret = avpriv_dv_get_packet(mov->dv_demux, pkt);
7727  if (ret < 0)
7728  return ret;
7729  }
7730 #endif
7731  if (st->codecpar->codec_id == AV_CODEC_ID_MP3 && !st->need_parsing && pkt->size > 4) {
7732  if (ff_mpa_check_header(AV_RB32(pkt->data)) < 0)
7734  }
7735  }
7736 
7737  pkt->stream_index = sc->ffindex;
7738  pkt->dts = sample->timestamp;
7739  if (sample->flags & AVINDEX_DISCARD_FRAME) {
7740  pkt->flags |= AV_PKT_FLAG_DISCARD;
7741  }
7742  if (sc->ctts_data && sc->ctts_index < sc->ctts_count) {
7743  pkt->pts = pkt->dts + sc->dts_shift + sc->ctts_data[sc->ctts_index].duration;
7744  /* update ctts context */
7745  sc->ctts_sample++;
7746  if (sc->ctts_index < sc->ctts_count &&
7747  sc->ctts_data[sc->ctts_index].count == sc->ctts_sample) {
7748  sc->ctts_index++;
7749  sc->ctts_sample = 0;
7750  }
7751  } else {
7752  int64_t next_dts = (sc->current_sample < st->nb_index_entries) ?
7754 
7755  if (next_dts >= pkt->dts)
7756  pkt->duration = next_dts - pkt->dts;
7757  pkt->pts = pkt->dts;
7758  }
7759  if (st->discard == AVDISCARD_ALL)
7760  goto retry;
7761  pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? AV_PKT_FLAG_KEY : 0;
7762  pkt->pos = sample->pos;
7763 
7764  /* Multiple stsd handling. */
7765  if (sc->stsc_data) {
7766  /* Keep track of the stsc index for the given sample, then check
7767  * if the stsd index is different from the last used one. */
7768  sc->stsc_sample++;
7769  if (mov_stsc_index_valid(sc->stsc_index, sc->stsc_count) &&
7770  mov_get_stsc_samples(sc, sc->stsc_index) == sc->stsc_sample) {
7771  sc->stsc_index++;
7772  sc->stsc_sample = 0;
7773  /* Do not check indexes after a switch. */
7774  } else if (sc->stsc_data[sc->stsc_index].id > 0 &&
7775  sc->stsc_data[sc->stsc_index].id - 1 < sc->stsd_count &&
7776  sc->stsc_data[sc->stsc_index].id - 1 != sc->last_stsd_index) {
7777  ret = mov_change_extradata(sc, pkt);
7778  if (ret < 0)
7779  return ret;
7780  }
7781  }
7782 
7783  if (mov->aax_mode)
7784  aax_filter(pkt->data, pkt->size, mov);
7785 
7786  ret = cenc_filter(mov, sc, pkt, current_index);
7787  if (ret < 0)
7788  return ret;
7789 
7790  return 0;
7791 }
7792 
7793 static int mov_seek_fragment(AVFormatContext *s, AVStream *st, int64_t timestamp)
7794 {
7795  MOVContext *mov = s->priv_data;
7796  int index;
7797 
7798  if (!mov->frag_index.complete)
7799  return 0;
7800 
7801  index = search_frag_timestamp(&mov->frag_index, st, timestamp);
7802  if (index < 0)
7803  index = 0;
7804  if (!mov->frag_index.item[index].headers_read)
7805  return mov_switch_root(s, -1, index);
7806  if (index + 1 < mov->frag_index.nb_items)
7807  mov->next_root_atom = mov->frag_index.item[index + 1].moof_offset;
7808 
7809  return 0;
7810 }
7811 
7812 static int mov_seek_stream(AVFormatContext *s, AVStream *st, int64_t timestamp, int flags)
7813 {
7814  MOVStreamContext *sc = st->priv_data;
7815  int sample, time_sample, ret;
7816  unsigned int i;
7817 
7818  // Here we consider timestamp to be PTS, hence try to offset it so that we
7819  // can search over the DTS timeline.
7820  timestamp -= (sc->min_corrected_pts + sc->dts_shift);
7821 
7822  ret = mov_seek_fragment(s, st, timestamp);
7823  if (ret < 0)
7824  return ret;
7825 
7826  sample = av_index_search_timestamp(st, timestamp, flags);
7827  av_log(s, AV_LOG_TRACE, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
7828  if (sample < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
7829  sample = 0;
7830  if (sample < 0) /* not sure what to do */
7831  return AVERROR_INVALIDDATA;
7832  mov_current_sample_set(sc, sample);
7833  av_log(s, AV_LOG_TRACE, "stream %d, found sample %d\n", st->index, sc->current_sample);
7834  /* adjust ctts index */
7835  if (sc->ctts_data) {
7836  time_sample = 0;
7837  for (i = 0; i < sc->ctts_count; i++) {
7838  int next = time_sample + sc->ctts_data[i].count;
7839  if (next > sc->current_sample) {
7840  sc->ctts_index = i;
7841  sc->ctts_sample = sc->current_sample - time_sample;
7842  break;
7843  }
7844  time_sample = next;
7845  }
7846  }
7847 
7848  /* adjust stsd index */
7849  time_sample = 0;
7850  for (i = 0; i < sc->stsc_count; i++) {
7851  int64_t next = time_sample + mov_get_stsc_samples(sc, i);
7852  if (next > sc->current_sample) {
7853  sc->stsc_index = i;
7854  sc->stsc_sample = sc->current_sample - time_sample;
7855  break;
7856  }
7857  av_assert0(next == (int)next);
7858  time_sample = next;
7859  }
7860 
7861  return sample;
7862 }
7863 
7864 static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
7865 {
7866  MOVContext *mc = s->priv_data;
7867  AVStream *st;
7868  int sample;
7869  int i;
7870 
7871  if (stream_index >= s->nb_streams)
7872  return AVERROR_INVALIDDATA;
7873 
7874  st = s->streams[stream_index];
7875  sample = mov_seek_stream(s, st, sample_time, flags);
7876  if (sample < 0)
7877  return sample;
7878 
7879  if (mc->seek_individually) {
7880  /* adjust seek timestamp to found sample timestamp */
7881  int64_t seek_timestamp = st->index_entries[sample].timestamp;
7882 
7883  for (i = 0; i < s->nb_streams; i++) {
7884  int64_t timestamp;
7885  MOVStreamContext *sc = s->streams[i]->priv_data;
7886  st = s->streams[i];
7887  st->skip_samples = (sample_time <= 0) ? sc->start_pad : 0;
7888 
7889  if (stream_index == i)
7890  continue;
7891 
7892  timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
7893  mov_seek_stream(s, st, timestamp, flags);
7894  }
7895  } else {
7896  for (i = 0; i < s->nb_streams; i++) {
7897  MOVStreamContext *sc;
7898  st = s->streams[i];
7899  sc = st->priv_data;
7900  mov_current_sample_set(sc, 0);
7901  }
7902  while (1) {
7903  MOVStreamContext *sc;
7904  AVIndexEntry *entry = mov_find_next_sample(s, &st);
7905  if (!entry)
7906  return AVERROR_INVALIDDATA;
7907  sc = st->priv_data;
7908  if (sc->ffindex == stream_index && sc->current_sample == sample)
7909  break;
7911  }
7912  }
7913  return 0;
7914 }
7915 
7916 #define OFFSET(x) offsetof(MOVContext, x)
7917 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
7918 static const AVOption mov_options[] = {
7919  {"use_absolute_path",
7920  "allow using absolute path when opening alias, this is a possible security issue",
7921  OFFSET(use_absolute_path), AV_OPT_TYPE_BOOL, {.i64 = 0},
7922  0, 1, FLAGS},
7923  {"seek_streams_individually",
7924  "Seek each stream individually to the to the closest point",
7925  OFFSET(seek_individually), AV_OPT_TYPE_BOOL, { .i64 = 1 },
7926  0, 1, FLAGS},
7927  {"ignore_editlist", "Ignore the edit list atom.", OFFSET(ignore_editlist), AV_OPT_TYPE_BOOL, {.i64 = 0},
7928  0, 1, FLAGS},
7929  {"advanced_editlist",
7930  "Modify the AVIndex according to the editlists. Use this option to decode in the order specified by the edits.",
7931  OFFSET(advanced_editlist), AV_OPT_TYPE_BOOL, {.i64 = 1},
7932  0, 1, FLAGS},
7933  {"ignore_chapters", "", OFFSET(ignore_chapters), AV_OPT_TYPE_BOOL, {.i64 = 0},
7934  0, 1, FLAGS},
7935  {"use_mfra_for",
7936  "use mfra for fragment timestamps",
7937  OFFSET(use_mfra_for), AV_OPT_TYPE_INT, {.i64 = FF_MOV_FLAG_MFRA_AUTO},
7939  "use_mfra_for"},
7940  {"auto", "auto", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_MFRA_AUTO}, 0, 0,
7941  FLAGS, "use_mfra_for" },
7942  {"dts", "dts", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_MFRA_DTS}, 0, 0,
7943  FLAGS, "use_mfra_for" },
7944  {"pts", "pts", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_MFRA_PTS}, 0, 0,
7945  FLAGS, "use_mfra_for" },
7946  { "export_all", "Export unrecognized metadata entries", OFFSET(export_all),
7947  AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, .flags = FLAGS },
7948  { "export_xmp", "Export full XMP metadata", OFFSET(export_xmp),
7949  AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, .flags = FLAGS },
7950  { "activation_bytes", "Secret bytes for Audible AAX files", OFFSET(activation_bytes),
7952  { "audible_fixed_key", // extracted from libAAX_SDK.so and AAXSDKWin.dll files!
7953  "Fixed key used for handling Audible AAX files", OFFSET(audible_fixed_key),
7954  AV_OPT_TYPE_BINARY, {.str="77214d4b196a87cd520045fd20a51d67"},
7955  .flags = AV_OPT_FLAG_DECODING_PARAM },
7956  { "decryption_key", "The media decryption key (hex)", OFFSET(decryption_key), AV_OPT_TYPE_BINARY, .flags = AV_OPT_FLAG_DECODING_PARAM },
7957  { "enable_drefs", "Enable external track support.", OFFSET(enable_drefs), AV_OPT_TYPE_BOOL,
7958  {.i64 = 0}, 0, 1, FLAGS },
7959 
7960  { NULL },
7961 };
7962 
7963 static const AVClass mov_class = {
7964  .class_name = "mov,mp4,m4a,3gp,3g2,mj2",
7965  .item_name = av_default_item_name,
7966  .option = mov_options,
7967  .version = LIBAVUTIL_VERSION_INT,
7968 };
7969 
7971  .name = "mov,mp4,m4a,3gp,3g2,mj2",
7972  .long_name = NULL_IF_CONFIG_SMALL("QuickTime / MOV"),
7973  .priv_class = &mov_class,
7974  .priv_data_size = sizeof(MOVContext),
7975  .extensions = "mov,mp4,m4a,3gp,3g2,mj2",
7976  .read_probe = mov_probe,
7982 };
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:1715
int itunes_metadata
metadata are itunes style
Definition: isom.h:259
int * bitrates
bitrates read before streams creation
Definition: isom.h:271
static int mov_read_moof(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:1367
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:189
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:4728
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
int64_t moof_offset
Definition: isom.h:136
size_t auxiliary_offsets_count
Definition: isom.h:123
#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:1505
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:7601
int64_t avio_size(AVIOContext *s)
Get the filesize.
Definition: aviobuf.c:336
static const char * format[]
Definition: af_aiir.c:330
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:207
#define OPUS_SEEK_PREROLL_MS
Definition: oggparseopus.c:35
unsigned int rap_group_count
Definition: isom.h:210
unsigned int elst_count
Definition: isom.h:175
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:5037
AVOption.
Definition: opt.h:246
hash context
Definition: sha.c:34
MOVTrackExt * trex_data
Definition: isom.h:257
void * av_realloc(void *ptr, size_t size)
Allocate, reallocate, or free a block of memory.
Definition: mem.c:135
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:101
int export_all
Definition: isom.h:269
int64_t end
Definition: isom.h:153
static int mov_change_extradata(MOVStreamContext *sc, AVPacket *pkt)
Definition: mov.c:7636
unsigned track_id
Definition: isom.h:90
#define MOV_TFHD_DEFAULT_DURATION
Definition: isom.h:306
static AVIndexEntry * mov_find_next_sample(AVFormatContext *s, AVStream **st)
Definition: mov.c:7568
uint32_t format
Definition: isom.h:231
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:4280
enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
Definition: utils.c:3124
unsigned int samples_per_frame
Definition: isom.h:193
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:3710
int dv_audio_container
Definition: isom.h:194
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:91
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
int64_t duration
Definition: isom.h:68
size_t spherical_size
Definition: isom.h:226
int64_t pos
byte position in stream, -1 if unknown
Definition: avcodec.h:1465
unsigned int ctts_allocated_size
Definition: isom.h:166
#define AV_DICT_DONT_OVERWRITE
Don'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:4882
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:697
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:7130
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:168
int has_palette
Definition: isom.h:205
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:237
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:144
static int mov_read_trak(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:4149
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:227
int index
stream index in AVFormatContext
Definition: avformat.h:875
int size
Definition: avcodec.h:1446
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:317
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:286
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:266
static int tmcd_is_referenced(AVFormatContext *s, int tmcd_id)
Definition: mov.c:7224
void * activation_bytes
Definition: isom.h:281
#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:117
struct MOVStreamContext::@253 cenc
static int mov_read_saiz(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:6079
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:122
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:196
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
char ** meta_keys
Definition: isom.h:251
#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:5584
#define IS_MATRIX_IDENT(matrix)
Definition: mov.c:4416
static AVPacket pkt
int height
tkhd height
Definition: isom.h:202
unsigned int avio_rb16(AVIOContext *s)
Definition: aviobuf.c:786
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_WB32 unsigned int_TMPL AV_WB24 unsigned int_TMPL AV_RB16
Definition: bytestream.h:87
#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:5647
uint32_t skip_byte_block
Only used for pattern encryption.
MOVElst * elst_data
Definition: isom.h:174
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:169
int nb_items
Definition: isom.h:147
static int mov_read_mvhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:1454
int ctts_index
Definition: isom.h:176
int complete
Definition: isom.h:145
unsigned stsd_id
Definition: isom.h:102
AVSphericalMapping * spherical
Definition: isom.h:225
This struct describes the properties of an encoded stream.
Definition: avcodec.h:3892
int found_moov
'moov' atom has been found
Definition: isom.h:247
static int mov_read_stps(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:2698
static void export_orphan_timecode(AVFormatContext *s)
Definition: mov.c:7240
enum AVColorSpace color_space
Definition: avcodec.h:3989
static int mov_read_aclr(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:1770
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:310
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:7594
#define AV_DICT_DONT_STRDUP_KEY
Take ownership of a key that'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:1624
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:105
#define MOV_TKHD_FLAG_ENABLED
Definition: isom.h:329
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:4583
int isom
1 if file is ISO Media (mp4/3gp)
Definition: isom.h:255
int found_mdat
'mdat' atom has been found
Definition: isom.h:248
int width
tkhd width
Definition: isom.h:201
unsigned drefs_count
Definition: isom.h:197
static int mov_read_st3d(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:5404
Format I/O context.
Definition: avformat.h:1351
static int mov_probe(AVProbeData *p)
Definition: mov.c:6878
static int mov_read_header(AVFormatContext *s)
Definition: mov.c:7358
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 parse(AVCodecParserContext *s, AVCodecContext *avctx, const uint8_t **poutbuf, int *poutbuf_size, const uint8_t *buf, int buf_size)
Definition: vp3_parser.c:23
static int mov_parse_stsd_data(MOVContext *c, AVIOContext *pb, AVStream *st, MOVStreamContext *sc, int64_t size)
Definition: mov.c:2277
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:198
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 const AVOption mov_options[]
Definition: mov.c:7918
static void mov_current_sample_dec(MOVStreamContext *sc)
Definition: mov.c:3368
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:362
#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:3273
Opaque data information usually continuous.
Definition: avutil.h:203
int width
Video only.
Definition: avcodec.h:3966
size_t coll_size
Definition: isom.h:229
AVOptions.
unsigned int sample_count
Definition: isom.h:180
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:801
int count
Definition: isom.h:63
int dts_shift
dts shift when ctts is negative
Definition: isom.h:203
int stsd_version
Definition: isom.h:221
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
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:6613
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:5670
AVInputFormat ff_mov_demuxer
Definition: mov.c:7970
unsigned int count
Definition: isom.h:109
static int mov_read_cmov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:5057
static int mov_read_sample_encryption_info(MOVContext *c, AVIOContext *pb, MOVStreamContext *sc, AVEncryptionInfo **sample, int use_subsamples)
Definition: mov.c:5880
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:3218
static void mov_current_sample_inc(MOVStreamContext *sc)
Definition: mov.c:3356
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
Definition: utils.c:4455
uint8_t * av_stream_get_side_data(const AVStream *stream, enum AVPacketSideDataType type, int *size)
Get side information from stream.
Definition: utils.c:5476
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
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_RB32
Definition: bytestream.h:87
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1419
int64_t duration
Definition: movenc.c:63
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:2422
int stsd_count
Definition: isom.h:220
int activation_bytes_size
Definition: isom.h:282
int initial_padding
Audio only.
Definition: avcodec.h:4029
#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:315
uint32_t tag
Definition: movenc.c:1483
void ff_configure_buffers_for_index(AVFormatContext *s, int64_t time_tolerance)
Definition: utils.c:2091
int nb_frames_for_fps
Definition: isom.h:213
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:235
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
ptrdiff_t size
Definition: opengl_enc.c:101
uint64_t avio_rb64(AVIOContext *s)
Definition: aviobuf.c:922
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:5830
static int test_same_origin(const char *src, const char *ref)
Definition: mov.c:4038
#define AV_WB16(p, v)
Definition: intreadwrite.h:405
void * av_realloc_array(void *ptr, size_t nmemb, size_t size)
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:188
#define MOV_TFHD_DEFAULT_SIZE
Definition: isom.h:307
int32_t movie_display_matrix[3][3]
display matrix from mvhd
Definition: isom.h:289
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
Definition: aviobuf.c:648
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:5783
unsigned track_id
Definition: isom.h:101
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:6052
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:3379
int64_t time_offset
time offset of the edit list entries
Definition: isom.h:186
static int mov_read_custom(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:4323
unsigned int keyframe_count
Definition: isom.h:183
MOVIndexRange * index_ranges
Definition: isom.h:190
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:129
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:1590
static int mov_read_stsd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:2546
uint8_t * auxiliary_info_sizes
Definition: isom.h:119
static int mov_rewrite_dvd_sub_extradata(AVStream *st)
Definition: mov.c:2242
#define AVINDEX_KEYFRAME
Definition: avformat.h:810
int * extradata_size
Definition: isom.h:218
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:2212
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:1504
AVDictionary * metadata
Metadata that applies to the whole file.
Definition: avformat.h:1591
unsigned int ctts_count
Definition: isom.h:165
static int mov_read_vpcc(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:5219
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:130
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:5309
static int mov_read_elst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:5111
static int mov_parse_auxiliary_info(MOVContext *c, MOVStreamContext *sc, AVIOContext *pb, MOVEncryptionIndex *encryption_index)
Definition: mov.c:5985
FLAC (Free Lossless Audio Codec) decoder/demuxer common functions.
AVAudioServiceType
Definition: avcodec.h:806
int stsc_sample
Definition: isom.h:171
unsigned int avio_rl32(AVIOContext *s)
Definition: aviobuf.c:770
#define AVERROR(e)
Definition: error.h:43
static int mov_read_ctts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:2964
int atom_depth
Definition: isom.h:277
uint32_t num_key_ids
The number of key IDs.
static int mov_read_coll(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:5348
static int mov_read_svq3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:1813
static int mov_read_wave(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:1818
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:191
#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:184
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:244
static int mov_open_dref(MOVContext *c, AVIOContext **pb, const char *src, MOVDref *ref)
Definition: mov.c:4067
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:4660
#define FFNABS(a)
Negative Absolute value.
Definition: common.h:81
GLsizei GLsizei * length
Definition: opengl_enc.c:115
int handbrake_version
Definition: isom.h:260
int ctts_sample
Definition: isom.h:177
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
GLsizei count
Definition: opengl_enc.c:109
int keyframe_absent
Definition: isom.h:182
static int mov_read_sidx(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:4929
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:327
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:1390
AVMasteringDisplayMetadata * av_mastering_display_metadata_alloc(void)
Copyright (c) 2016 Neil Birkbeck neil.birkbeck@gmail.com
void * audible_fixed_key
Definition: isom.h:283
static int cenc_filter(MOVContext *mov, MOVStreamContext *sc, AVPacket *pkt, int current_index)
Definition: mov.c:6549
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:187
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:2450
int avio_r8(AVIOContext *s)
Definition: aviobuf.c:639
int av_reallocp_array(void *ptr, size_t nmemb, size_t size)
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:4424
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:6757
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:1537
#define MAX_REORDER_DELAY
Definition: mov.c:3300
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:228
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:1405
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:5340
static int mov_seek_stream(AVFormatContext *s, AVStream *st, int64_t timestamp, int flags)
Definition: mov.c:7812
uint8_t file_key[20]
Definition: isom.h:279
static int64_t mov_get_stsc_samples(MOVStreamContext *sc, unsigned int index)
Definition: mov.c:2686
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:285
static int mov_read_stts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:2871
#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:5380
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:3287
unsigned int avio_rb24(AVIOContext *s)
Definition: aviobuf.c:794
static int mov_read_chap(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:4577
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:140
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:5491
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'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:5180
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:2680
GLsizei GLboolean const GLfloat * value
Definition: opengl_enc.c:109
static int update_frag_index(MOVContext *c, int64_t offset)
Definition: mov.c:1301
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:5931
int id
Definition: isom.h:64
uint8_t auxiliary_info_default_size
Definition: isom.h:121
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:287
static int mov_read_jp2h(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:1697
uint32_t bound_right
Distance from the right edge.
Definition: spherical.h:169
#define FLAGS
Definition: mov.c:7917
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:7102
AVFormatContext * ctx
Definition: movenc.c:48
int audible_fixed_key_size
Definition: isom.h:284
static int mov_read_tfhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:4537
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:3408
static int mov_read_ares(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:1729
int advanced_editlist
Definition: isom.h:265
static int mov_read_tfdt(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:4622
#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:185
#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:464
uint64_t moof_offset
Definition: isom.h:92
MOVStts * ctts_data
Definition: isom.h:167
#define OFFSET(x)
Definition: mov.c:7916
int32_t yaw
Rotation around the up vector [-180, 180].
Definition: spherical.h:126
#define MOV_TRUN_SAMPLE_DURATION
Definition: isom.h:314
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:5527
unsigned size
Definition: isom.h:104
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:264
MOVFragmentIndexItem * item
Definition: isom.h:148
int64_t * chunk_offsets
Definition: isom.h:162
static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
Definition: mov.c:7659
static int mov_read_close(AVFormatContext *s)
Definition: mov.c:7142
unsigned int index
Definition: isom.h:110
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:1876
MOVFragmentIndex frag_index
Definition: isom.h:276
int ff_mov_read_chan(AVFormatContext *s, AVIOContext *pb, AVStream *st, int64_t size)
Read 'chan' 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:363
static int cenc_decrypt(MOVContext *c, MOVStreamContext *sc, AVEncryptionInfo *sample, uint8_t *input, int size)
Definition: mov.c:6493
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:5191
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:246
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:6456
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:103
DVDemuxContext * dv_demux
Definition: isom.h:253
#define AVIO_SEEKABLE_NORMAL
Seeking works like for a local file.
Definition: avio.h:40
int timecode_track
Definition: isom.h:200
int * sample_sizes
Definition: isom.h:181
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_WB32 unsigned int_TMPL AV_WB24 unsigned int_TMPL AV_WB16 unsigned int_TMPL AV_RB8
Definition: bytestream.h:87
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:7864
int ff_rfps_add_frame(AVFormatContext *ic, AVStream *st, int64_t dts)
add frame for rfps calculation.
Definition: utils.c:3321
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:95
Views are on top of each other.
Definition: stereo3d.h:79
MOVSbgp * rap_group
Definition: isom.h:211
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:6246
static void mov_read_chapters(AVFormatContext *s)
Definition: mov.c:6962
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:2047
int * chapter_tracks
Definition: isom.h:261
unsigned int stsz_sample_size
always contains sample size from stsz atom
Definition: isom.h:179
static int read_tfra(MOVContext *mov, AVIOContext *f)
Definition: mov.c:7258
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:258
#define MOV_TRUN_FIRST_SAMPLE_FLAGS
Definition: isom.h:313
#define AV_CH_FRONT_LEFT
static int mov_read_ilst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:4271
timecode wraps after 24 hours
Definition: timecode.h:37
int enable_drefs
Definition: isom.h:288
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:206
static int mov_read_free(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:5761
int has_looked_for_mfra
Definition: isom.h:275
void * buf
Definition: avisynth_c.h:690
GLint GLenum type
Definition: opengl_enc.c:105
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:164
MOVEncryptionIndex * encryption_index
Definition: isom.h:132
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:3122
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
'aax' file has been detected
Definition: isom.h:278
#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:1702
#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:256
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:3301
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:208
Definition: isom.h:82
static enum AVCodecID ff_mov_get_lpcm_codec_id(int bps, int flags)
Compute codec id for 'lpcm' tag.
Definition: isom.h:369
int use_mfra_for
Definition: isom.h:274
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:2103
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:308
static int mov_read_schm(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:6354
static int mov_read_tenc(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:6385
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:4389
#define FF_MOV_FLAG_MFRA_AUTO
Definition: isom.h:361
int64_t time
Definition: isom.h:69
int pb_is_copied
Definition: isom.h:158
#define MOV_TRUN_SAMPLE_FLAGS
Definition: isom.h:316
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:339
#define MOV_TFHD_STSD_ID
Definition: isom.h:305
static int mov_read_stss(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:2734
AVFormatContext * dv_fctx
Definition: isom.h:254
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:170
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:93
static int64_t pts
#define flags(name, subs,...)
Definition: cbs_av1.c:596
AVStereo3D * stereo3d
Definition: isom.h:224
static void mov_update_dts_shift(MOVStreamContext *sc, int duration)
Definition: mov.c:2953
unsigned int per_sample_iv_size
Definition: isom.h:236
static int mov_read_meta(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:4401
#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:173
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
int(* parse)(MOVContext *ctx, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:72
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:1052
int64_t duration
Decoding: duration of the stream, in stream time base.
Definition: avformat.h:923
int64_t sidx_pts
Definition: isom.h:128
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:1707
MPEG Audio header decoder.
int start_pad
amount of samples to skip due to enc-dec delay
Definition: isom.h:209
int trak_index
Index of the current 'trak'.
Definition: isom.h:250
negative time values are allowed
Definition: timecode.h:38
full parsing and repack
Definition: avformat.h:793
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_RB64
Definition: bytestream.h:87
Main libavformat public API header.
int32_t * display_matrix
Definition: isom.h:223
int
AVIOContext * pb
Definition: isom.h:157
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:3258
static int mov_read_strf(MOVContext *c, AVIOContext *pb, MOVAtom atom)
An strf atom is a BITMAPINFOHEADER struct.
Definition: mov.c:1942
#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:192
#define FF_DISABLE_DEPRECATION_WARNINGS
Definition: internal.h:84
unsigned flags
Definition: isom.h:97
int bitrates_count
Definition: isom.h:272
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:7077
if(ret< 0)
Definition: vf_mcdeint.c:279
#define MOV_TFHD_BASE_DATA_OFFSET
Definition: isom.h:304
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:5263
int export_xmp
Definition: isom.h:270
int seek_individually
Definition: isom.h:267
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:6661
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:3080
static int parse_timecode_in_framenum_format(AVFormatContext *s, AVStream *st, uint32_t value, int flags)
Definition: mov.c:7063
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:588
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:172
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:3305
unsigned int chunk_count
Definition: isom.h:161
#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:2012
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:152
unsigned meta_keys_count
Definition: isom.h:252
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:1965
uint32_t palette[256]
Definition: isom.h:204
#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:94
static int mov_seek_fragment(AVFormatContext *s, AVStream *st, int64_t timestamp)
Definition: mov.c:7793
unsigned int index_entries_allocated_size
Definition: avformat.h:1106
MOVEncryptionIndex * encryption_index
Definition: isom.h:238
#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:1352
static int mov_finalize_stsd_codec(MOVContext *c, AVIOContext *pb, AVStream *st, MOVStreamContext *sc)
Definition: mov.c:2343
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:1692
#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:1661
unsigned int stts_count
Definition: isom.h:163
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:178
static int mov_read_sv3d(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:5447
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:7313
uint8_t file_iv[20]
Definition: isom.h:280
static const AVClass mov_class
Definition: mov.c:7963
#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:312
int64_t next_root_atom
offset of the next root atom
Definition: isom.h:268
int last_stsd_index
Definition: isom.h:219
unsigned int nb_encrypted_samples
Definition: isom.h:116
int channels
Audio only.
Definition: avcodec.h:4006
unsigned int nb_chapter_tracks
Definition: isom.h:262
int time_scale
Definition: isom.h:245
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:1911
Definition: isom.h:67
int pseudo_stream_id
-1 means demux all ids
Definition: isom.h:195
#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:1639
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:159
uint8_t ** extradata
extradata array (and size) for multiple stsd
Definition: isom.h:217
FILE * out
Definition: movenc.c:54
int use_absolute_path
Definition: isom.h:263
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)
static int mov_read_trex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:4596
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:2611
static void mov_current_sample_set(MOVStreamContext *sc, int current_sample)
Definition: mov.c:3380
#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:96
#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:880
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:1687
int64_t duration_for_fps
Definition: isom.h:214
#define AV_CH_SIDE_LEFT
#define FFSWAP(type, a, b)
Definition: common.h:99
static int mov_read_stsz(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:2783
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:273
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:4139
AVRational r_frame_rate
Real base framerate of the stream.
Definition: avformat.h:998
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
#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
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_RL32
Definition: bytestream.h:87
unsigned MaxFALL
Max average light level per frame (cd/m^2).
This structure stores compressed data.
Definition: avcodec.h:1422
static int mov_read_sbgp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
Definition: mov.c:3030
size_t auxiliary_info_sample_count
Definition: isom.h:120
mode
Use these values in ebur128_init (or'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
'hdlr' atom with type 'mdta' has been found
Definition: isom.h:249
int has_sidx
Definition: isom.h:233
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
GLuint buffer
Definition: opengl_enc.c:102
Definition: isom.h:73
static uint32_t yuv_to_rgba(uint32_t ycbcr)
Definition: mov.c:2226
#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:320
uint8_t pi<< 24) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_U8,(uint64_t)((*(constuint8_t *) pi-0x80U))<< 56) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8,(*(constuint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8,(*(constuint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16,(*(constint16_t *) pi >>8)+0x80) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S16,(uint64_t)(*(constint16_t *) pi)<< 48) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16,*(constint16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16,*(constint16_t *) pi *(1.0/(1<< 15))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32,(*(constint32_t *) pi >>24)+0x80) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S32,(uint64_t)(*(constint32_t *) pi)<< 32) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32,*(constint32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32,*(constint32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S64,(*(constint64_t *) pi >>56)+0x80) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S64,*(constint64_t *) pi *(1.0f/(INT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S64,*(constint64_t *) pi *(1.0/(INT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, av_clip_uint8(lrintf(*(constfloat *) pi *(1<< 7))+0x80)) CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, av_clip_int16(lrintf(*(constfloat *) pi *(1<< 15)))) CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, av_clipl_int32(llrintf(*(constfloat *) pi *(1U<< 31)))) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_FLT, llrintf(*(constfloat *) pi *(INT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, av_clip_uint8(lrint(*(constdouble *) pi *(1<< 7))+0x80)) CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, av_clip_int16(lrint(*(constdouble *) pi *(1<< 15)))) CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, av_clipl_int32(llrint(*(constdouble *) pi *(1U<< 31)))) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_DBL, llrint(*(constdouble *) pi *(INT64_C(1)<< 63)))#defineFMT_PAIR_FUNC(out, in) staticconv_func_type *constfmt_pair_to_conv_functions[AV_SAMPLE_FMT_NB *AV_SAMPLE_FMT_NB]={FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S64),};staticvoidcpy1(uint8_t **dst, constuint8_t **src, intlen){memcpy(*dst,*src, len);}staticvoidcpy2(uint8_t **dst, constuint8_t **src, intlen){memcpy(*dst,*src, 2 *len);}staticvoidcpy4(uint8_t **dst, constuint8_t **src, intlen){memcpy(*dst,*src, 4 *len);}staticvoidcpy8(uint8_t **dst, constuint8_t **src, intlen){memcpy(*dst,*src, 8 *len);}AudioConvert *swri_audio_convert_alloc(enumAVSampleFormatout_fmt, enumAVSampleFormatin_fmt, intchannels, constint *ch_map, intflags){AudioConvert *ctx;conv_func_type *f=fmt_pair_to_conv_functions[av_get_packed_sample_fmt(out_fmt)+AV_SAMPLE_FMT_NB *av_get_packed_sample_fmt(in_fmt)];if(!f) returnNULL;ctx=av_mallocz(sizeof(*ctx));if(!ctx) returnNULL;if(channels==1){in_fmt=av_get_planar_sample_fmt(in_fmt);out_fmt=av_get_planar_sample_fmt(out_fmt);}ctx->channels=channels;ctx->conv_f=f;ctx->ch_map=ch_map;if(in_fmt==AV_SAMPLE_FMT_U8||in_fmt==AV_SAMPLE_FMT_U8P) memset(ctx->silence, 0x80, sizeof(ctx->silence));if(out_fmt==in_fmt &&!ch_map){switch(av_get_bytes_per_sample(in_fmt)){case1:ctx->simd_f=cpy1;break;case2:ctx->simd_f=cpy2;break;case4:ctx->simd_f=cpy4;break;case8:ctx->simd_f=cpy8;break;}}if(HAVE_X86ASM &&1) swri_audio_convert_init_x86(ctx, out_fmt, in_fmt, channels);if(ARCH_ARM) swri_audio_convert_init_arm(ctx, out_fmt, in_fmt, channels);if(ARCH_AARCH64) swri_audio_convert_init_aarch64(ctx, out_fmt, in_fmt, channels);returnctx;}voidswri_audio_convert_free(AudioConvert **ctx){av_freep(ctx);}intswri_audio_convert(AudioConvert *ctx, AudioData *out, AudioData *in, intlen){intch;intoff=0;constintos=(out->planar?1:out->ch_count)*out->bps;unsignedmisaligned=0;av_assert0(ctx->channels==out->ch_count);if(ctx->in_simd_align_mask){intplanes=in->planar?in->ch_count:1;unsignedm=0;for(ch=0;ch< planes;ch++) m|=(intptr_t) in->ch[ch];misaligned|=m &ctx->in_simd_align_mask;}if(ctx->out_simd_align_mask){intplanes=out->planar?out->ch_count:1;unsignedm=0;for(ch=0;ch< planes;ch++) m|=(intptr_t) out->ch[ch];misaligned|=m &ctx->out_simd_align_mask;}if(ctx->simd_f &&!ctx->ch_map &&!misaligned){off=len &~15;av_assert1(off >=0);av_assert1(off<=len);av_assert2(ctx->channels==SWR_CH_MAX||!in->ch[ctx->channels]);if(off >0){if(out->planar==in->planar){intplanes=out->planar?out->ch_count:1;for(ch=0;ch< planes;ch++){ctx->simd_f(out-> ch ch
Definition: audioconvert.c:56
void * av_mallocz_array(size_t nmemb, size_t size)
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:6151