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Imported Debian version 2.4.3~trusty1
[deb_ffmpeg.git] / ffmpeg / libavformat / mov.c
CommitLineData
2ba45a60
DM		 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//#define MOV_EXPORT_ALL_METADATA
31
32#include "libavutil/attributes.h"
33#include "libavutil/channel_layout.h"
34#include "libavutil/display.h"
35#include "libavutil/intreadwrite.h"
36#include "libavutil/intfloat.h"
37#include "libavutil/mathematics.h"
38#include "libavutil/avstring.h"
39#include "libavutil/dict.h"
40#include "libavutil/opt.h"
41#include "libavutil/timecode.h"
42#include "libavcodec/ac3tab.h"
43#include "avformat.h"
44#include "internal.h"
45#include "avio_internal.h"
46#include "riff.h"
47#include "isom.h"
48#include "libavcodec/get_bits.h"
49#include "id3v1.h"
50#include "mov_chan.h"
51#include "replaygain.h"
52
53#if CONFIG_ZLIB
54#include <zlib.h>
55#endif
56
57#include "qtpalette.h"
58
59
60#undef NDEBUG
61#include <assert.h>
62
63/* those functions parse an atom */
64/* links atom IDs to parse functions */
65typedef struct MOVParseTableEntry {
66 uint32_t type;
67 int (*parse)(MOVContext *ctx, AVIOContext *pb, MOVAtom atom);
68} MOVParseTableEntry;
69
70static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom);
71
72static int mov_metadata_track_or_disc_number(MOVContext *c, AVIOContext *pb,
73 unsigned len, const char *key)
74{
75 char buf[16];
76
77 short current, total = 0;
78 avio_rb16(pb); // unknown
79 current = avio_rb16(pb);
80 if (len >= 6)
81 total = avio_rb16(pb);
82 if (!total)
83 snprintf(buf, sizeof(buf), "%d", current);
84 else
85 snprintf(buf, sizeof(buf), "%d/%d", current, total);
86 c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
87 av_dict_set(&c->fc->metadata, key, buf, 0);
88
89 return 0;
90}
91
92static int mov_metadata_int8_bypass_padding(MOVContext *c, AVIOContext *pb,
93 unsigned len, const char *key)
94{
95 /* bypass padding bytes */
96 avio_r8(pb);
97 avio_r8(pb);
98 avio_r8(pb);
99
100 c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
101 av_dict_set_int(&c->fc->metadata, key, avio_r8(pb), 0);
102
103 return 0;
104}
105
106static int mov_metadata_int8_no_padding(MOVContext *c, AVIOContext *pb,
107 unsigned len, const char *key)
108{
109 c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
110 av_dict_set_int(&c->fc->metadata, key, avio_r8(pb), 0);
111
112 return 0;
113}
114
115static int mov_metadata_gnre(MOVContext *c, AVIOContext *pb,
116 unsigned len, const char *key)
117{
118 short genre;
119
120 avio_r8(pb); // unknown
121
122 genre = avio_r8(pb);
123 if (genre < 1 || genre > ID3v1_GENRE_MAX)
124 return 0;
125 c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
126 av_dict_set(&c->fc->metadata, key, ff_id3v1_genre_str[genre-1], 0);
127
128 return 0;
129}
130
131static const uint32_t mac_to_unicode[128] = {
132 0x00C4,0x00C5,0x00C7,0x00C9,0x00D1,0x00D6,0x00DC,0x00E1,
133 0x00E0,0x00E2,0x00E4,0x00E3,0x00E5,0x00E7,0x00E9,0x00E8,
134 0x00EA,0x00EB,0x00ED,0x00EC,0x00EE,0x00EF,0x00F1,0x00F3,
135 0x00F2,0x00F4,0x00F6,0x00F5,0x00FA,0x00F9,0x00FB,0x00FC,
136 0x2020,0x00B0,0x00A2,0x00A3,0x00A7,0x2022,0x00B6,0x00DF,
137 0x00AE,0x00A9,0x2122,0x00B4,0x00A8,0x2260,0x00C6,0x00D8,
138 0x221E,0x00B1,0x2264,0x2265,0x00A5,0x00B5,0x2202,0x2211,
139 0x220F,0x03C0,0x222B,0x00AA,0x00BA,0x03A9,0x00E6,0x00F8,
140 0x00BF,0x00A1,0x00AC,0x221A,0x0192,0x2248,0x2206,0x00AB,
141 0x00BB,0x2026,0x00A0,0x00C0,0x00C3,0x00D5,0x0152,0x0153,
142 0x2013,0x2014,0x201C,0x201D,0x2018,0x2019,0x00F7,0x25CA,
143 0x00FF,0x0178,0x2044,0x20AC,0x2039,0x203A,0xFB01,0xFB02,
144 0x2021,0x00B7,0x201A,0x201E,0x2030,0x00C2,0x00CA,0x00C1,
145 0x00CB,0x00C8,0x00CD,0x00CE,0x00CF,0x00CC,0x00D3,0x00D4,
146 0xF8FF,0x00D2,0x00DA,0x00DB,0x00D9,0x0131,0x02C6,0x02DC,
147 0x00AF,0x02D8,0x02D9,0x02DA,0x00B8,0x02DD,0x02DB,0x02C7,
148};
149
150static int mov_read_mac_string(MOVContext *c, AVIOContext *pb, int len,
151 char *dst, int dstlen)
152{
153 char *p = dst;
154 char *end = dst+dstlen-1;
155 int i;
156
157 for (i = 0; i < len; i++) {
158 uint8_t t, c = avio_r8(pb);
159 if (c < 0x80 && p < end)
160 *p++ = c;
161 else if (p < end)
162 PUT_UTF8(mac_to_unicode[c-0x80], t, if (p < end) *p++ = t;);
163 }
164 *p = 0;
165 return p - dst;
166}
167
168static int mov_read_covr(MOVContext *c, AVIOContext *pb, int type, int len)
169{
170 AVPacket pkt;
171 AVStream *st;
172 MOVStreamContext *sc;
173 enum AVCodecID id;
174 int ret;
175
176 switch (type) {
177 case 0xd: id = AV_CODEC_ID_MJPEG; break;
178 case 0xe: id = AV_CODEC_ID_PNG; break;
179 case 0x1b: id = AV_CODEC_ID_BMP; break;
180 default:
181 av_log(c->fc, AV_LOG_WARNING, "Unknown cover type: 0x%x.\n", type);
182 avio_skip(pb, len);
183 return 0;
184 }
185
186 st = avformat_new_stream(c->fc, NULL);
187 if (!st)
188 return AVERROR(ENOMEM);
189 sc = av_mallocz(sizeof(*sc));
190 if (!sc)
191 return AVERROR(ENOMEM);
192 st->priv_data = sc;
193
194 ret = av_get_packet(pb, &pkt, len);
195 if (ret < 0)
196 return ret;
197
198 st->disposition |= AV_DISPOSITION_ATTACHED_PIC;
199
200 st->attached_pic = pkt;
201 st->attached_pic.stream_index = st->index;
202 st->attached_pic.flags |= AV_PKT_FLAG_KEY;
203
204 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
205 st->codec->codec_id = id;
206
207 return 0;
208}
209
210static int mov_metadata_raw(MOVContext *c, AVIOContext *pb,
211 unsigned len, const char *key)
212{
213 char *value = av_malloc(len + 1);
214 if (!value)
215 return AVERROR(ENOMEM);
216 avio_read(pb, value, len);
217 value[len] = 0;
218 return av_dict_set(&c->fc->metadata, key, value, AV_DICT_DONT_STRDUP_VAL);
219}
220
221static int mov_metadata_loci(MOVContext *c, AVIOContext *pb, unsigned len)
222{
223 char language[4] = { 0 };
224 char buf[100];
225 uint16_t langcode = 0;
226 double longitude, latitude;
227 const char *key = "location";
228
229 if (len < 4 + 2 + 1 + 1 + 4 + 4 + 4)
230 return AVERROR_INVALIDDATA;
231
232 avio_skip(pb, 4); // version+flags
233 langcode = avio_rb16(pb);
234 ff_mov_lang_to_iso639(langcode, language);
235 len -= 6;
236
237 len -= avio_get_str(pb, len, buf, sizeof(buf)); // place name
238 if (len < 1)
239 return AVERROR_INVALIDDATA;
240 avio_skip(pb, 1); // role
241 len -= 1;
242
243 if (len < 14)
244 return AVERROR_INVALIDDATA;
245 longitude = ((int32_t) avio_rb32(pb)) / (float) (1 << 16);
246 latitude = ((int32_t) avio_rb32(pb)) / (float) (1 << 16);
247
248 // Try to output in the same format as the ?xyz field
249 snprintf(buf, sizeof(buf), "%+08.4f%+09.4f/", latitude, longitude);
250 if (*language && strcmp(language, "und")) {
251 char key2[16];
252 snprintf(key2, sizeof(key2), "%s-%s", key, language);
253 av_dict_set(&c->fc->metadata, key2, buf, 0);
254 }
255 c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
256 return av_dict_set(&c->fc->metadata, key, buf, 0);
257}
258
259static int mov_read_udta_string(MOVContext *c, AVIOContext *pb, MOVAtom atom)
260{
261#ifdef MOV_EXPORT_ALL_METADATA
262 char tmp_key[5];
263#endif
264 char str[1024], key2[16], language[4] = {0};
265 const char *key = NULL;
266 uint16_t langcode = 0;
267 uint32_t data_type = 0, str_size;
268 int (*parse)(MOVContext*, AVIOContext*, unsigned, const char*) = NULL;
269
270 switch (atom.type) {
271 case MKTAG(0xa9,'n','a','m'): key = "title"; break;
272 case MKTAG(0xa9,'a','u','t'):
273 case MKTAG(0xa9,'A','R','T'): key = "artist"; break;
274 case MKTAG( 'a','A','R','T'): key = "album_artist"; break;
275 case MKTAG(0xa9,'w','r','t'): key = "composer"; break;
276 case MKTAG( 'c','p','i','l'): key = "compilation";
277 parse = mov_metadata_int8_no_padding; break;
278 case MKTAG( 'c','p','r','t'):
279 case MKTAG(0xa9,'c','p','y'): key = "copyright"; break;
280 case MKTAG(0xa9,'g','r','p'): key = "grouping"; break;
281 case MKTAG(0xa9,'l','y','r'): key = "lyrics"; break;
282 case MKTAG(0xa9,'c','m','t'):
283 case MKTAG(0xa9,'i','n','f'): key = "comment"; break;
284 case MKTAG(0xa9,'a','l','b'): key = "album"; break;
285 case MKTAG(0xa9,'d','a','y'): key = "date"; break;
286 case MKTAG(0xa9,'g','e','n'): key = "genre"; break;
287 case MKTAG( 'g','n','r','e'): key = "genre";
288 parse = mov_metadata_gnre; break;
289 case MKTAG(0xa9,'t','o','o'):
290 case MKTAG(0xa9,'s','w','r'): key = "encoder"; break;
291 case MKTAG(0xa9,'e','n','c'): key = "encoder"; break;
292 case MKTAG(0xa9,'m','a','k'): key = "make"; break;
293 case MKTAG(0xa9,'m','o','d'): key = "model"; break;
294 case MKTAG(0xa9,'x','y','z'): key = "location"; break;
295 case MKTAG( 'd','e','s','c'): key = "description";break;
296 case MKTAG( 'l','d','e','s'): key = "synopsis"; break;
297 case MKTAG( 't','v','s','h'): key = "show"; break;
298 case MKTAG( 't','v','e','n'): key = "episode_id";break;
299 case MKTAG( 't','v','n','n'): key = "network"; break;
300 case MKTAG( 't','r','k','n'): key = "track";
301 parse = mov_metadata_track_or_disc_number; break;
302 case MKTAG( 'd','i','s','k'): key = "disc";
303 parse = mov_metadata_track_or_disc_number; break;
304 case MKTAG( 't','v','e','s'): key = "episode_sort";
305 parse = mov_metadata_int8_bypass_padding; break;
306 case MKTAG( 't','v','s','n'): key = "season_number";
307 parse = mov_metadata_int8_bypass_padding; break;
308 case MKTAG( 's','t','i','k'): key = "media_type";
309 parse = mov_metadata_int8_no_padding; break;
310 case MKTAG( 'h','d','v','d'): key = "hd_video";
311 parse = mov_metadata_int8_no_padding; break;
312 case MKTAG( 'p','g','a','p'): key = "gapless_playback";
313 parse = mov_metadata_int8_no_padding; break;
314 case MKTAG( '@','P','R','M'):
315 return mov_metadata_raw(c, pb, atom.size, "premiere_version");
316 case MKTAG( '@','P','R','Q'):
317 return mov_metadata_raw(c, pb, atom.size, "quicktime_version");
318 case MKTAG( 'l','o','c','i'):
319 return mov_metadata_loci(c, pb, atom.size);
320 case MKTAG( 'X','M','P','_'):
321 return mov_metadata_raw(c, pb, atom.size, "xmp");
322 }
323
324 if (c->itunes_metadata && atom.size > 8) {
325 int data_size = avio_rb32(pb);
326 int tag = avio_rl32(pb);
327 if (tag == MKTAG('d','a','t','a')) {
328 data_type = avio_rb32(pb); // type
329 avio_rb32(pb); // unknown
330 str_size = data_size - 16;
331 atom.size -= 16;
332
333 if (atom.type == MKTAG('c', 'o', 'v', 'r')) {
334 int ret = mov_read_covr(c, pb, data_type, str_size);
335 if (ret < 0) {
336 av_log(c->fc, AV_LOG_ERROR, "Error parsing cover art.\n");
337 }
338 return ret;
339 }
340 } else return 0;
341 } else if (atom.size > 4 && key && !c->itunes_metadata) {
342 str_size = avio_rb16(pb); // string length
343 langcode = avio_rb16(pb);
344 ff_mov_lang_to_iso639(langcode, language);
345 atom.size -= 4;
346 } else
347 str_size = atom.size;
348
349#ifdef MOV_EXPORT_ALL_METADATA
350 if (!key) {
351 snprintf(tmp_key, 5, "%.4s", (char*)&atom.type);
352 key = tmp_key;
353 }
354#endif
355
356 if (!key)
357 return 0;
358 if (atom.size < 0)
359 return AVERROR_INVALIDDATA;
360
361 str_size = FFMIN3(sizeof(str)-1, str_size, atom.size);
362
363 if (parse)
364 parse(c, pb, str_size, key);
365 else {
366 if (data_type == 3 || (data_type == 0 && (langcode < 0x400 || langcode == 0x7fff))) { // MAC Encoded
367 mov_read_mac_string(c, pb, str_size, str, sizeof(str));
368 } else {
369 int ret = avio_read(pb, str, str_size);
370 if (ret != str_size)
371 return ret < 0 ? ret : AVERROR_INVALIDDATA;
372 str[str_size] = 0;
373 }
374 c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
375 av_dict_set(&c->fc->metadata, key, str, 0);
376 if (*language && strcmp(language, "und")) {
377 snprintf(key2, sizeof(key2), "%s-%s", key, language);
378 av_dict_set(&c->fc->metadata, key2, str, 0);
379 }
380 }
381 av_dlog(c->fc, "lang \"%3s\" ", language);
382 av_dlog(c->fc, "tag \"%s\" value \"%s\" atom \"%.4s\" %d %"PRId64"\n",
383 key, str, (char*)&atom.type, str_size, atom.size);
384
385 return 0;
386}
387
388static int mov_read_chpl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
389{
390 int64_t start;
391 int i, nb_chapters, str_len, version;
392 char str[256+1];
393
394 if ((atom.size -= 5) < 0)
395 return 0;
396
397 version = avio_r8(pb);
398 avio_rb24(pb);
399 if (version)
400 avio_rb32(pb); // ???
401 nb_chapters = avio_r8(pb);
402
403 for (i = 0; i < nb_chapters; i++) {
404 if (atom.size < 9)
405 return 0;
406
407 start = avio_rb64(pb);
408 str_len = avio_r8(pb);
409
410 if ((atom.size -= 9+str_len) < 0)
411 return 0;
412
413 avio_read(pb, str, str_len);
414 str[str_len] = 0;
415 avpriv_new_chapter(c->fc, i, (AVRational){1,10000000}, start, AV_NOPTS_VALUE, str);
416 }
417 return 0;
418}
419
420#define MIN_DATA_ENTRY_BOX_SIZE 12
421static int mov_read_dref(MOVContext *c, AVIOContext *pb, MOVAtom atom)
422{
423 AVStream *st;
424 MOVStreamContext *sc;
425 int entries, i, j;
426
427 if (c->fc->nb_streams < 1)
428 return 0;
429 st = c->fc->streams[c->fc->nb_streams-1];
430 sc = st->priv_data;
431
432 avio_rb32(pb); // version + flags
433 entries = avio_rb32(pb);
434 if (entries > (atom.size - 1) / MIN_DATA_ENTRY_BOX_SIZE + 1 ||
435 entries >= UINT_MAX / sizeof(*sc->drefs))
436 return AVERROR_INVALIDDATA;
437 av_free(sc->drefs);
438 sc->drefs_count = 0;
439 sc->drefs = av_mallocz(entries * sizeof(*sc->drefs));
440 if (!sc->drefs)
441 return AVERROR(ENOMEM);
442 sc->drefs_count = entries;
443
444 for (i = 0; i < sc->drefs_count; i++) {
445 MOVDref *dref = &sc->drefs[i];
446 uint32_t size = avio_rb32(pb);
447 int64_t next = avio_tell(pb) + size - 4;
448
449 if (size < 12)
450 return AVERROR_INVALIDDATA;
451
452 dref->type = avio_rl32(pb);
453 avio_rb32(pb); // version + flags
454 av_dlog(c->fc, "type %.4s size %d\n", (char*)&dref->type, size);
455
456 if (dref->type == MKTAG('a','l','i','s') && size > 150) {
457 /* macintosh alias record */
458 uint16_t volume_len, len;
459 int16_t type;
460
461 avio_skip(pb, 10);
462
463 volume_len = avio_r8(pb);
464 volume_len = FFMIN(volume_len, 27);
465 avio_read(pb, dref->volume, 27);
466 dref->volume[volume_len] = 0;
467 av_log(c->fc, AV_LOG_DEBUG, "volume %s, len %d\n", dref->volume, volume_len);
468
469 avio_skip(pb, 12);
470
471 len = avio_r8(pb);
472 len = FFMIN(len, 63);
473 avio_read(pb, dref->filename, 63);
474 dref->filename[len] = 0;
475 av_log(c->fc, AV_LOG_DEBUG, "filename %s, len %d\n", dref->filename, len);
476
477 avio_skip(pb, 16);
478
479 /* read next level up_from_alias/down_to_target */
480 dref->nlvl_from = avio_rb16(pb);
481 dref->nlvl_to = avio_rb16(pb);
482 av_log(c->fc, AV_LOG_DEBUG, "nlvl from %d, nlvl to %d\n",
483 dref->nlvl_from, dref->nlvl_to);
484
485 avio_skip(pb, 16);
486
487 for (type = 0; type != -1 && avio_tell(pb) < next; ) {
488 if(avio_feof(pb))
489 return AVERROR_EOF;
490 type = avio_rb16(pb);
491 len = avio_rb16(pb);
492 av_log(c->fc, AV_LOG_DEBUG, "type %d, len %d\n", type, len);
493 if (len&1)
494 len += 1;
495 if (type == 2) { // absolute path
496 av_free(dref->path);
497 dref->path = av_mallocz(len+1);
498 if (!dref->path)
499 return AVERROR(ENOMEM);
500 avio_read(pb, dref->path, len);
501 if (len > volume_len && !strncmp(dref->path, dref->volume, volume_len)) {
502 len -= volume_len;
503 memmove(dref->path, dref->path+volume_len, len);
504 dref->path[len] = 0;
505 }
506 for (j = 0; j < len; j++)
507 if (dref->path[j] == ':')
508 dref->path[j] = '/';
509 av_log(c->fc, AV_LOG_DEBUG, "path %s\n", dref->path);
510 } else if (type == 0) { // directory name
511 av_free(dref->dir);
512 dref->dir = av_malloc(len+1);
513 if (!dref->dir)
514 return AVERROR(ENOMEM);
515 if (avio_read(pb, dref->dir, len) != len)
516 return AVERROR_INVALIDDATA;
517 dref->dir[len] = 0;
518 for (j = 0; j < len; j++)
519 if (dref->dir[j] == ':')
520 dref->dir[j] = '/';
521 av_log(c->fc, AV_LOG_DEBUG, "dir %s\n", dref->dir);
522 } else
523 avio_skip(pb, len);
524 }
525 }
526 avio_seek(pb, next, SEEK_SET);
527 }
528 return 0;
529}
530
531static int mov_read_hdlr(MOVContext *c, AVIOContext *pb, MOVAtom atom)
532{
533 AVStream *st;
534 uint32_t type;
535 uint32_t av_unused ctype;
536 int title_size;
537 char *title_str;
538
539 if (c->fc->nb_streams < 1) // meta before first trak
540 return 0;
541
542 st = c->fc->streams[c->fc->nb_streams-1];
543
544 avio_r8(pb); /* version */
545 avio_rb24(pb); /* flags */
546
547 /* component type */
548 ctype = avio_rl32(pb);
549 type = avio_rl32(pb); /* component subtype */
550
551 av_dlog(c->fc, "ctype= %.4s (0x%08x)\n", (char*)&ctype, ctype);
552 av_dlog(c->fc, "stype= %.4s\n", (char*)&type);
553
554 if (type == MKTAG('v','i','d','e'))
555 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
556 else if (type == MKTAG('s','o','u','n'))
557 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
558 else if (type == MKTAG('m','1','a',' '))
559 st->codec->codec_id = AV_CODEC_ID_MP2;
560 else if ((type == MKTAG('s','u','b','p')) || (type == MKTAG('c','l','c','p')))
561 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
562
563 avio_rb32(pb); /* component manufacture */
564 avio_rb32(pb); /* component flags */
565 avio_rb32(pb); /* component flags mask */
566
567 title_size = atom.size - 24;
568 if (title_size > 0) {
569 title_str = av_malloc(title_size + 1); /* Add null terminator */
570 if (!title_str)
571 return AVERROR(ENOMEM);
572 avio_read(pb, title_str, title_size);
573 title_str[title_size] = 0;
574 if (title_str[0])
575 av_dict_set(&st->metadata, "handler_name", title_str +
576 (!c->isom && title_str[0] == title_size - 1), 0);
577 av_freep(&title_str);
578 }
579
580 return 0;
581}
582
583int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb)
584{
585 AVStream *st;
586 int tag;
587
588 if (fc->nb_streams < 1)
589 return 0;
590 st = fc->streams[fc->nb_streams-1];
591
592 avio_rb32(pb); /* version + flags */
593 ff_mp4_read_descr(fc, pb, &tag);
594 if (tag == MP4ESDescrTag) {
595 ff_mp4_parse_es_descr(pb, NULL);
596 } else
597 avio_rb16(pb); /* ID */
598
599 ff_mp4_read_descr(fc, pb, &tag);
600 if (tag == MP4DecConfigDescrTag)
601 ff_mp4_read_dec_config_descr(fc, st, pb);
602 return 0;
603}
604
605static int mov_read_esds(MOVContext *c, AVIOContext *pb, MOVAtom atom)
606{
607 return ff_mov_read_esds(c->fc, pb);
608}
609
610static int mov_read_dac3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
611{
612 AVStream *st;
613 int ac3info, acmod, lfeon, bsmod;
614
615 if (c->fc->nb_streams < 1)
616 return 0;
617 st = c->fc->streams[c->fc->nb_streams-1];
618
619 ac3info = avio_rb24(pb);
620 bsmod = (ac3info >> 14) & 0x7;
621 acmod = (ac3info >> 11) & 0x7;
622 lfeon = (ac3info >> 10) & 0x1;
623 st->codec->channels = ((int[]){2,1,2,3,3,4,4,5})[acmod] + lfeon;
624 st->codec->channel_layout = avpriv_ac3_channel_layout_tab[acmod];
625 if (lfeon)
626 st->codec->channel_layout |= AV_CH_LOW_FREQUENCY;
627 st->codec->audio_service_type = bsmod;
628 if (st->codec->channels > 1 && bsmod == 0x7)
629 st->codec->audio_service_type = AV_AUDIO_SERVICE_TYPE_KARAOKE;
630
631 return 0;
632}
633
634static int mov_read_dec3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
635{
636 AVStream *st;
637 int eac3info, acmod, lfeon, bsmod;
638
639 if (c->fc->nb_streams < 1)
640 return 0;
641 st = c->fc->streams[c->fc->nb_streams-1];
642
643 /* No need to parse fields for additional independent substreams and its
644 * associated dependent substreams since libavcodec's E-AC-3 decoder
645 * does not support them yet. */
646 avio_rb16(pb); /* data_rate and num_ind_sub */
647 eac3info = avio_rb24(pb);
648 bsmod = (eac3info >> 12) & 0x1f;
649 acmod = (eac3info >> 9) & 0x7;
650 lfeon = (eac3info >> 8) & 0x1;
651 st->codec->channel_layout = avpriv_ac3_channel_layout_tab[acmod];
652 if (lfeon)
653 st->codec->channel_layout |= AV_CH_LOW_FREQUENCY;
654 st->codec->channels = av_get_channel_layout_nb_channels(st->codec->channel_layout);
655 st->codec->audio_service_type = bsmod;
656 if (st->codec->channels > 1 && bsmod == 0x7)
657 st->codec->audio_service_type = AV_AUDIO_SERVICE_TYPE_KARAOKE;
658
659 return 0;
660}
661
662static int mov_read_chan(MOVContext *c, AVIOContext *pb, MOVAtom atom)
663{
664 AVStream *st;
665
666 if (c->fc->nb_streams < 1)
667 return 0;
668 st = c->fc->streams[c->fc->nb_streams-1];
669
670 if (atom.size < 16)
671 return 0;
672
673 /* skip version and flags */
674 avio_skip(pb, 4);
675
676 ff_mov_read_chan(c->fc, pb, st, atom.size - 4);
677
678 return 0;
679}
680
681static int mov_read_wfex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
682{
683 AVStream *st;
684
685 if (c->fc->nb_streams < 1)
686 return 0;
687 st = c->fc->streams[c->fc->nb_streams-1];
688
689 if (ff_get_wav_header(pb, st->codec, atom.size) < 0) {
690 av_log(c->fc, AV_LOG_WARNING, "get_wav_header failed\n");
691 }
692
693 return 0;
694}
695
696static int mov_read_pasp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
697{
698 const int num = avio_rb32(pb);
699 const int den = avio_rb32(pb);
700 AVStream *st;
701
702 if (c->fc->nb_streams < 1)
703 return 0;
704 st = c->fc->streams[c->fc->nb_streams-1];
705
706 if ((st->sample_aspect_ratio.den != 1 || st->sample_aspect_ratio.num) && // default
707 (den != st->sample_aspect_ratio.den || num != st->sample_aspect_ratio.num)) {
708 av_log(c->fc, AV_LOG_WARNING,
709 "sample aspect ratio already set to %d:%d, ignoring 'pasp' atom (%d:%d)\n",
710 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
711 num, den);
712 } else if (den != 0) {
713 st->sample_aspect_ratio.num = num;
714 st->sample_aspect_ratio.den = den;
715 }
716 return 0;
717}
718
719/* this atom contains actual media data */
720static int mov_read_mdat(MOVContext *c, AVIOContext *pb, MOVAtom atom)
721{
722 if (atom.size == 0) /* wrong one (MP4) */
723 return 0;
724 c->found_mdat=1;
725 return 0; /* now go for moov */
726}
727
728/* read major brand, minor version and compatible brands and store them as metadata */
729static int mov_read_ftyp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
730{
731 uint32_t minor_ver;
732 int comp_brand_size;
733 char* comp_brands_str;
734 uint8_t type[5] = {0};
735
736 avio_read(pb, type, 4);
737 if (strcmp(type, "qt "))
738 c->isom = 1;
739 av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
740 av_dict_set(&c->fc->metadata, "major_brand", type, 0);
741 minor_ver = avio_rb32(pb); /* minor version */
742 av_dict_set_int(&c->fc->metadata, "minor_version", minor_ver, 0);
743
744 comp_brand_size = atom.size - 8;
745 if (comp_brand_size < 0)
746 return AVERROR_INVALIDDATA;
747 comp_brands_str = av_malloc(comp_brand_size + 1); /* Add null terminator */
748 if (!comp_brands_str)
749 return AVERROR(ENOMEM);
750 avio_read(pb, comp_brands_str, comp_brand_size);
751 comp_brands_str[comp_brand_size] = 0;
752 av_dict_set(&c->fc->metadata, "compatible_brands", comp_brands_str, 0);
753 av_freep(&comp_brands_str);
754
755 return 0;
756}
757
758/* this atom should contain all header atoms */
759static int mov_read_moov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
760{
761 int ret;
762
763 if (c->found_moov) {
764 av_log(c->fc, AV_LOG_WARNING, "Found duplicated MOOV Atom. Skipped it\n");
765 avio_skip(pb, atom.size);
766 return 0;
767 }
768
769 if ((ret = mov_read_default(c, pb, atom)) < 0)
770 return ret;
771 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
772 /* so we don't parse the whole file if over a network */
773 c->found_moov=1;
774 return 0; /* now go for mdat */
775}
776
777static int mov_read_moof(MOVContext *c, AVIOContext *pb, MOVAtom atom)
778{
779 c->fragment.moof_offset = c->fragment.implicit_offset = avio_tell(pb) - 8;
780 av_dlog(c->fc, "moof offset %"PRIx64"\n", c->fragment.moof_offset);
781 return mov_read_default(c, pb, atom);
782}
783
784static void mov_metadata_creation_time(AVDictionary **metadata, int64_t time)
785{
786 char buffer[32];
787 if (time) {
788 struct tm *ptm;
789 time_t timet;
790 if(time >= 2082844800)
791 time -= 2082844800; /* seconds between 1904-01-01 and Epoch */
792 timet = time;
793 ptm = gmtime(&timet);
794 if (!ptm) return;
795 strftime(buffer, sizeof(buffer), "%Y-%m-%d %H:%M:%S", ptm);
796 av_dict_set(metadata, "creation_time", buffer, 0);
797 }
798}
799
800static int mov_read_mdhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
801{
802 AVStream *st;
803 MOVStreamContext *sc;
804 int version;
805 char language[4] = {0};
806 unsigned lang;
807 int64_t creation_time;
808
809 if (c->fc->nb_streams < 1)
810 return 0;
811 st = c->fc->streams[c->fc->nb_streams-1];
812 sc = st->priv_data;
813
814 if (sc->time_scale) {
815 av_log(c->fc, AV_LOG_ERROR, "Multiple mdhd?\n");
816 return AVERROR_INVALIDDATA;
817 }
818
819 version = avio_r8(pb);
820 if (version > 1) {
821 avpriv_request_sample(c->fc, "Version %d", version);
822 return AVERROR_PATCHWELCOME;
823 }
824 avio_rb24(pb); /* flags */
825 if (version == 1) {
826 creation_time = avio_rb64(pb);
827 avio_rb64(pb);
828 } else {
829 creation_time = avio_rb32(pb);
830 avio_rb32(pb); /* modification time */
831 }
832 mov_metadata_creation_time(&st->metadata, creation_time);
833
834 sc->time_scale = avio_rb32(pb);
835 st->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
836
837 lang = avio_rb16(pb); /* language */
838 if (ff_mov_lang_to_iso639(lang, language))
839 av_dict_set(&st->metadata, "language", language, 0);
840 avio_rb16(pb); /* quality */
841
842 return 0;
843}
844
845static int mov_read_mvhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
846{
847 int64_t creation_time;
848 int version = avio_r8(pb); /* version */
849 avio_rb24(pb); /* flags */
850
851 if (version == 1) {
852 creation_time = avio_rb64(pb);
853 avio_rb64(pb);
854 } else {
855 creation_time = avio_rb32(pb);
856 avio_rb32(pb); /* modification time */
857 }
858 mov_metadata_creation_time(&c->fc->metadata, creation_time);
859 c->time_scale = avio_rb32(pb); /* time scale */
860
861 av_dlog(c->fc, "time scale = %i\n", c->time_scale);
862
863 c->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
864 // set the AVCodecContext duration because the duration of individual tracks
865 // may be inaccurate
866 if (c->time_scale > 0 && !c->trex_data)
867 c->fc->duration = av_rescale(c->duration, AV_TIME_BASE, c->time_scale);
868 avio_rb32(pb); /* preferred scale */
869
870 avio_rb16(pb); /* preferred volume */
871
872 avio_skip(pb, 10); /* reserved */
873
874 avio_skip(pb, 36); /* display matrix */
875
876 avio_rb32(pb); /* preview time */
877 avio_rb32(pb); /* preview duration */
878 avio_rb32(pb); /* poster time */
879 avio_rb32(pb); /* selection time */
880 avio_rb32(pb); /* selection duration */
881 avio_rb32(pb); /* current time */
882 avio_rb32(pb); /* next track ID */
883 return 0;
884}
885
886static int mov_read_enda(MOVContext *c, AVIOContext *pb, MOVAtom atom)
887{
888 AVStream *st;
889 int little_endian;
890
891 if (c->fc->nb_streams < 1)
892 return 0;
893 st = c->fc->streams[c->fc->nb_streams-1];
894
895 little_endian = avio_rb16(pb) & 0xFF;
896 av_dlog(c->fc, "enda %d\n", little_endian);
897 if (little_endian == 1) {
898 switch (st->codec->codec_id) {
899 case AV_CODEC_ID_PCM_S24BE:
900 st->codec->codec_id = AV_CODEC_ID_PCM_S24LE;
901 break;
902 case AV_CODEC_ID_PCM_S32BE:
903 st->codec->codec_id = AV_CODEC_ID_PCM_S32LE;
904 break;
905 case AV_CODEC_ID_PCM_F32BE:
906 st->codec->codec_id = AV_CODEC_ID_PCM_F32LE;
907 break;
908 case AV_CODEC_ID_PCM_F64BE:
909 st->codec->codec_id = AV_CODEC_ID_PCM_F64LE;
910 break;
911 default:
912 break;
913 }
914 }
915 return 0;
916}
917
918static int mov_read_fiel(MOVContext *c, AVIOContext *pb, MOVAtom atom)
919{
920 AVStream *st;
921 unsigned mov_field_order;
922 enum AVFieldOrder decoded_field_order = AV_FIELD_UNKNOWN;
923
924 if (c->fc->nb_streams < 1) // will happen with jp2 files
925 return 0;
926 st = c->fc->streams[c->fc->nb_streams-1];
927 if (atom.size < 2)
928 return AVERROR_INVALIDDATA;
929 mov_field_order = avio_rb16(pb);
930 if ((mov_field_order & 0xFF00) == 0x0100)
931 decoded_field_order = AV_FIELD_PROGRESSIVE;
932 else if ((mov_field_order & 0xFF00) == 0x0200) {
933 switch (mov_field_order & 0xFF) {
934 case 0x01: decoded_field_order = AV_FIELD_TT;
935 break;
936 case 0x06: decoded_field_order = AV_FIELD_BB;
937 break;
938 case 0x09: decoded_field_order = AV_FIELD_TB;
939 break;
940 case 0x0E: decoded_field_order = AV_FIELD_BT;
941 break;
942 }
943 }
944 if (decoded_field_order == AV_FIELD_UNKNOWN && mov_field_order) {
945 av_log(NULL, AV_LOG_ERROR, "Unknown MOV field order 0x%04x\n", mov_field_order);
946 }
947 st->codec->field_order = decoded_field_order;
948
949 return 0;
950}
951
952/* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
953static int mov_read_extradata(MOVContext *c, AVIOContext *pb, MOVAtom atom,
954 enum AVCodecID codec_id)
955{
956 AVStream *st;
957 uint64_t size;
958 uint8_t *buf;
959 int err;
960
961 if (c->fc->nb_streams < 1) // will happen with jp2 files
962 return 0;
963 st= c->fc->streams[c->fc->nb_streams-1];
964
965 if (st->codec->codec_id != codec_id)
966 return 0; /* unexpected codec_id - don't mess with extradata */
967
968 size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
969 if (size > INT_MAX || (uint64_t)atom.size > INT_MAX)
970 return AVERROR_INVALIDDATA;
971 if ((err = av_reallocp(&st->codec->extradata, size)) < 0) {
972 st->codec->extradata_size = 0;
973 return err;
974 }
975 buf = st->codec->extradata + st->codec->extradata_size;
976 st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE;
977 AV_WB32( buf , atom.size + 8);
978 AV_WL32( buf + 4, atom.type);
979 err = avio_read(pb, buf + 8, atom.size);
980 if (err < 0) {
981 return err;
982 } else if (err < atom.size) {
983 av_log(c->fc, AV_LOG_WARNING, "truncated extradata\n");
984 st->codec->extradata_size -= atom.size - err;
985 }
986 memset(buf + 8 + err, 0, FF_INPUT_BUFFER_PADDING_SIZE);
987 return 0;
988}
989
990/* wrapper functions for reading ALAC/AVS/MJPEG/MJPEG2000 extradata atoms only for those codecs */
991static int mov_read_alac(MOVContext *c, AVIOContext *pb, MOVAtom atom)
992{
993 return mov_read_extradata(c, pb, atom, AV_CODEC_ID_ALAC);
994}
995
996static int mov_read_avss(MOVContext *c, AVIOContext *pb, MOVAtom atom)
997{
998 return mov_read_extradata(c, pb, atom, AV_CODEC_ID_AVS);
999}
1000
1001static int mov_read_jp2h(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1002{
1003 return mov_read_extradata(c, pb, atom, AV_CODEC_ID_JPEG2000);
1004}
1005
1006static int mov_read_avid(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1007{
1008 int ret = mov_read_extradata(c, pb, atom, AV_CODEC_ID_AVUI);
1009 if(ret == 0)
1010 ret = mov_read_extradata(c, pb, atom, AV_CODEC_ID_DNXHD);
1011 return ret;
1012}
1013
1014static int mov_read_targa_y216(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1015{
1016 int ret = mov_read_extradata(c, pb, atom, AV_CODEC_ID_TARGA_Y216);
1017
1018 if (!ret && c->fc->nb_streams >= 1) {
1019 AVCodecContext *avctx = c->fc->streams[c->fc->nb_streams-1]->codec;
1020 if (avctx->extradata_size >= 40) {
1021 avctx->height = AV_RB16(&avctx->extradata[36]);
1022 avctx->width = AV_RB16(&avctx->extradata[38]);
1023 }
1024 }
1025 return ret;
1026}
1027
1028static int mov_read_ares(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1029{
1030 if (c->fc->nb_streams >= 1) {
1031 AVCodecContext *codec = c->fc->streams[c->fc->nb_streams-1]->codec;
1032 if (codec->codec_tag == MKTAG('A', 'V', 'i', 'n') &&
1033 codec->codec_id == AV_CODEC_ID_H264 &&
1034 atom.size > 11) {
1035 avio_skip(pb, 10);
1036 /* For AVID AVCI50, force width of 1440 to be able to select the correct SPS and PPS */
1037 if (avio_rb16(pb) == 0xd4d)
1038 codec->width = 1440;
1039 return 0;
1040 }
1041 }
1042
1043 return mov_read_avid(c, pb, atom);
1044}
1045
1046static int mov_read_svq3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1047{
1048 return mov_read_extradata(c, pb, atom, AV_CODEC_ID_SVQ3);
1049}
1050
1051static int mov_read_wave(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1052{
1053 AVStream *st;
1054
1055 if (c->fc->nb_streams < 1)
1056 return 0;
1057 st = c->fc->streams[c->fc->nb_streams-1];
1058
1059 if ((uint64_t)atom.size > (1<<30))
1060 return AVERROR_INVALIDDATA;
1061
1062 if (st->codec->codec_id == AV_CODEC_ID_QDM2 ||
1063 st->codec->codec_id == AV_CODEC_ID_QDMC ||
1064 st->codec->codec_id == AV_CODEC_ID_SPEEX) {
1065 // pass all frma atom to codec, needed at least for QDMC and QDM2
1066 av_free(st->codec->extradata);
1067 if (ff_get_extradata(st->codec, pb, atom.size) < 0)
1068 return AVERROR(ENOMEM);
1069 } else if (atom.size > 8) { /* to read frma, esds atoms */
1070 int ret;
1071 if ((ret = mov_read_default(c, pb, atom)) < 0)
1072 return ret;
1073 } else
1074 avio_skip(pb, atom.size);
1075 return 0;
1076}
1077
1078/**
1079 * This function reads atom content and puts data in extradata without tag
1080 * nor size unlike mov_read_extradata.
1081 */
1082static int mov_read_glbl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1083{
1084 AVStream *st;
1085
1086 if (c->fc->nb_streams < 1)
1087 return 0;
1088 st = c->fc->streams[c->fc->nb_streams-1];
1089
1090 if ((uint64_t)atom.size > (1<<30))
1091 return AVERROR_INVALIDDATA;
1092
1093 if (atom.size >= 10) {
1094 // Broken files created by legacy versions of libavformat will
1095 // wrap a whole fiel atom inside of a glbl atom.
1096 unsigned size = avio_rb32(pb);
1097 unsigned type = avio_rl32(pb);
1098 avio_seek(pb, -8, SEEK_CUR);
1099 if (type == MKTAG('f','i','e','l') && size == atom.size)
1100 return mov_read_default(c, pb, atom);
1101 }
1102 av_free(st->codec->extradata);
1103 if (ff_get_extradata(st->codec, pb, atom.size) < 0)
1104 return AVERROR(ENOMEM);
1105
1106 return 0;
1107}
1108
1109static int mov_read_dvc1(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1110{
1111 AVStream *st;
1112 uint8_t profile_level;
1113 int ret;
1114
1115 if (c->fc->nb_streams < 1)
1116 return 0;
1117 st = c->fc->streams[c->fc->nb_streams-1];
1118
1119 if (atom.size >= (1<<28) || atom.size < 7)
1120 return AVERROR_INVALIDDATA;
1121
1122 profile_level = avio_r8(pb);
1123 if ((profile_level & 0xf0) != 0xc0)
1124 return 0;
1125
1126 avio_seek(pb, 6, SEEK_CUR);
1127 av_free(st->codec->extradata);
1128 if ((ret = ff_get_extradata(st->codec, pb, atom.size - 7)) < 0)
1129 return ret;
1130
1131 return 0;
1132}
1133
1134/**
1135 * An strf atom is a BITMAPINFOHEADER struct. This struct is 40 bytes itself,
1136 * but can have extradata appended at the end after the 40 bytes belonging
1137 * to the struct.
1138 */
1139static int mov_read_strf(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1140{
1141 AVStream *st;
1142
1143 if (c->fc->nb_streams < 1)
1144 return 0;
1145 if (atom.size <= 40)
1146 return 0;
1147 st = c->fc->streams[c->fc->nb_streams-1];
1148
1149 if ((uint64_t)atom.size > (1<<30))
1150 return AVERROR_INVALIDDATA;
1151
1152 avio_skip(pb, 40);
1153 av_free(st->codec->extradata);
1154 if (ff_get_extradata(st->codec, pb, atom.size - 40) < 0)
1155 return AVERROR(ENOMEM);
1156 return 0;
1157}
1158
1159static int mov_read_stco(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1160{
1161 AVStream *st;
1162 MOVStreamContext *sc;
1163 unsigned int i, entries;
1164
1165 if (c->fc->nb_streams < 1)
1166 return 0;
1167 st = c->fc->streams[c->fc->nb_streams-1];
1168 sc = st->priv_data;
1169
1170 avio_r8(pb); /* version */
1171 avio_rb24(pb); /* flags */
1172
1173 entries = avio_rb32(pb);
1174
1175 if (!entries)
1176 return 0;
1177 if (entries >= UINT_MAX/sizeof(int64_t))
1178 return AVERROR_INVALIDDATA;
1179
1180 sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
1181 if (!sc->chunk_offsets)
1182 return AVERROR(ENOMEM);
1183 sc->chunk_count = entries;
1184
1185 if (atom.type == MKTAG('s','t','c','o'))
1186 for (i = 0; i < entries && !pb->eof_reached; i++)
1187 sc->chunk_offsets[i] = avio_rb32(pb);
1188 else if (atom.type == MKTAG('c','o','6','4'))
1189 for (i = 0; i < entries && !pb->eof_reached; i++)
1190 sc->chunk_offsets[i] = avio_rb64(pb);
1191 else
1192 return AVERROR_INVALIDDATA;
1193
1194 sc->chunk_count = i;
1195
1196 if (pb->eof_reached)
1197 return AVERROR_EOF;
1198
1199 return 0;
1200}
1201
1202/**
1203 * Compute codec id for 'lpcm' tag.
1204 * See CoreAudioTypes and AudioStreamBasicDescription at Apple.
1205 */
1206enum AVCodecID ff_mov_get_lpcm_codec_id(int bps, int flags)
1207{
1208 /* lpcm flags:
1209 * 0x1 = float
1210 * 0x2 = big-endian
1211 * 0x4 = signed
1212 */
1213 return ff_get_pcm_codec_id(bps, flags & 1, flags & 2, flags & 4 ? -1 : 0);
1214}
1215
1216static int mov_codec_id(AVStream *st, uint32_t format)
1217{
1218 int id = ff_codec_get_id(ff_codec_movaudio_tags, format);
1219
1220 if (id <= 0 &&
1221 ((format & 0xFFFF) == 'm' + ('s' << 8) ||
1222 (format & 0xFFFF) == 'T' + ('S' << 8)))
1223 id = ff_codec_get_id(ff_codec_wav_tags, av_bswap32(format) & 0xFFFF);
1224
1225 if (st->codec->codec_type != AVMEDIA_TYPE_VIDEO && id > 0) {
1226 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
1227 } else if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO &&
1228 /* skip old asf mpeg4 tag */
1229 format && format != MKTAG('m','p','4','s')) {
1230 id = ff_codec_get_id(ff_codec_movvideo_tags, format);
1231 if (id <= 0)
1232 id = ff_codec_get_id(ff_codec_bmp_tags, format);
1233 if (id > 0)
1234 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
1235 else if (st->codec->codec_type == AVMEDIA_TYPE_DATA ||
1236 (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE &&
1237 st->codec->codec_id == AV_CODEC_ID_NONE)) {
1238 id = ff_codec_get_id(ff_codec_movsubtitle_tags, format);
1239 if (id > 0)
1240 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
1241 }
1242 }
1243
1244 st->codec->codec_tag = format;
1245
1246 return id;
1247}
1248
1249static void mov_parse_stsd_video(MOVContext *c, AVIOContext *pb,
1250 AVStream *st, MOVStreamContext *sc)
1251{
1252 uint8_t codec_name[32];
1253 unsigned int color_depth, len, j;
1254 int color_greyscale;
1255 int color_table_id;
1256
1257 avio_rb16(pb); /* version */
1258 avio_rb16(pb); /* revision level */
1259 avio_rb32(pb); /* vendor */
1260 avio_rb32(pb); /* temporal quality */
1261 avio_rb32(pb); /* spatial quality */
1262
1263 st->codec->width = avio_rb16(pb); /* width */
1264 st->codec->height = avio_rb16(pb); /* height */
1265
1266 avio_rb32(pb); /* horiz resolution */
1267 avio_rb32(pb); /* vert resolution */
1268 avio_rb32(pb); /* data size, always 0 */
1269 avio_rb16(pb); /* frames per samples */
1270
1271 len = avio_r8(pb); /* codec name, pascal string */
1272 if (len > 31)
1273 len = 31;
1274 mov_read_mac_string(c, pb, len, codec_name, sizeof(codec_name));
1275 if (len < 31)
1276 avio_skip(pb, 31 - len);
1277
1278 if (codec_name[0])
1279 av_dict_set(&st->metadata, "encoder", codec_name, 0);
1280
1281 /* codec_tag YV12 triggers an UV swap in rawdec.c */
1282 if (!memcmp(codec_name, "Planar Y'CbCr 8-bit 4:2:0", 25)) {
1283 st->codec->codec_tag = MKTAG('I', '4', '2', '0');
1284 st->codec->width &= ~1;
1285 st->codec->height &= ~1;
1286 }
1287 /* Flash Media Server uses tag H263 with Sorenson Spark */
1288 if (st->codec->codec_tag == MKTAG('H','2','6','3') &&
1289 !memcmp(codec_name, "Sorenson H263", 13))
1290 st->codec->codec_id = AV_CODEC_ID_FLV1;
1291
1292 st->codec->bits_per_coded_sample = avio_rb16(pb); /* depth */
1293 color_table_id = avio_rb16(pb); /* colortable id */
1294 av_dlog(c->fc, "depth %d, ctab id %d\n",
1295 st->codec->bits_per_coded_sample, color_table_id);
1296 /* figure out the palette situation */
1297 color_depth = st->codec->bits_per_coded_sample & 0x1F;
1298 color_greyscale = st->codec->bits_per_coded_sample & 0x20;
1299 /* Do not create a greyscale palette for cinepak */
1300 if (color_greyscale && st->codec->codec_id == AV_CODEC_ID_CINEPAK)
1301 return;
1302
1303 /* if the depth is 2, 4, or 8 bpp, file is palettized */
1304 if ((color_depth == 2) || (color_depth == 4) || (color_depth == 8)) {
1305 /* for palette traversal */
1306 unsigned int color_start, color_count, color_end;
1307 unsigned char a, r, g, b;
1308
1309 if (color_greyscale) {
1310 int color_index, color_dec;
1311 /* compute the greyscale palette */
1312 st->codec->bits_per_coded_sample = color_depth;
1313 color_count = 1 << color_depth;
1314 color_index = 255;
1315 color_dec = 256 / (color_count - 1);
1316 for (j = 0; j < color_count; j++) {
1317 r = g = b = color_index;
1318 sc->palette[j] = (0xFFU << 24) | (r << 16) | (g << 8) | (b);
1319 color_index -= color_dec;
1320 if (color_index < 0)
1321 color_index = 0;
1322 }
1323 } else if (color_table_id) {
1324 const uint8_t *color_table;
1325 /* if flag bit 3 is set, use the default palette */
1326 color_count = 1 << color_depth;
1327 if (color_depth == 2)
1328 color_table = ff_qt_default_palette_4;
1329 else if (color_depth == 4)
1330 color_table = ff_qt_default_palette_16;
1331 else
1332 color_table = ff_qt_default_palette_256;
1333
1334 for (j = 0; j < color_count; j++) {
1335 r = color_table[j * 3 + 0];
1336 g = color_table[j * 3 + 1];
1337 b = color_table[j * 3 + 2];
1338 sc->palette[j] = (0xFFU << 24) | (r << 16) | (g << 8) | (b);
1339 }
1340 } else {
1341 /* load the palette from the file */
1342 color_start = avio_rb32(pb);
1343 color_count = avio_rb16(pb);
1344 color_end = avio_rb16(pb);
1345 if ((color_start <= 255) && (color_end <= 255)) {
1346 for (j = color_start; j <= color_end; j++) {
1347 /* each A, R, G, or B component is 16 bits;
1348 * only use the top 8 bits */
1349 a = avio_r8(pb);
1350 avio_r8(pb);
1351 r = avio_r8(pb);
1352 avio_r8(pb);
1353 g = avio_r8(pb);
1354 avio_r8(pb);
1355 b = avio_r8(pb);
1356 avio_r8(pb);
1357 sc->palette[j] = (a << 24 ) | (r << 16) | (g << 8) | (b);
1358 }
1359 }
1360 }
1361 sc->has_palette = 1;
1362 }
1363}
1364
1365static void mov_parse_stsd_audio(MOVContext *c, AVIOContext *pb,
1366 AVStream *st, MOVStreamContext *sc)
1367{
1368 int bits_per_sample, flags;
1369 uint16_t version = avio_rb16(pb);
1370 AVDictionaryEntry *compatible_brands = av_dict_get(c->fc->metadata, "compatible_brands", NULL, AV_DICT_MATCH_CASE);
1371
1372 avio_rb16(pb); /* revision level */
1373 avio_rb32(pb); /* vendor */
1374
1375 st->codec->channels = avio_rb16(pb); /* channel count */
1376 st->codec->bits_per_coded_sample = avio_rb16(pb); /* sample size */
1377 av_dlog(c->fc, "audio channels %d\n", st->codec->channels);
1378
1379 sc->audio_cid = avio_rb16(pb);
1380 avio_rb16(pb); /* packet size = 0 */
1381
1382 st->codec->sample_rate = ((avio_rb32(pb) >> 16));
1383
1384 // Read QT version 1 fields. In version 0 these do not exist.
1385 av_dlog(c->fc, "version =%d, isom =%d\n", version, c->isom);
1386 if (!c->isom ||
1387 (compatible_brands && strstr(compatible_brands->value, "qt "))) {
1388
1389 if (version == 1) {
1390 sc->samples_per_frame = avio_rb32(pb);
1391 avio_rb32(pb); /* bytes per packet */
1392 sc->bytes_per_frame = avio_rb32(pb);
1393 avio_rb32(pb); /* bytes per sample */
1394 } else if (version == 2) {
1395 avio_rb32(pb); /* sizeof struct only */
1396 st->codec->sample_rate = av_int2double(avio_rb64(pb));
1397 st->codec->channels = avio_rb32(pb);
1398 avio_rb32(pb); /* always 0x7F000000 */
1399 st->codec->bits_per_coded_sample = avio_rb32(pb);
1400
1401 flags = avio_rb32(pb); /* lpcm format specific flag */
1402 sc->bytes_per_frame = avio_rb32(pb);
1403 sc->samples_per_frame = avio_rb32(pb);
1404 if (st->codec->codec_tag == MKTAG('l','p','c','m'))
1405 st->codec->codec_id =
1406 ff_mov_get_lpcm_codec_id(st->codec->bits_per_coded_sample,
1407 flags);
1408 }
1409 }
1410
1411 switch (st->codec->codec_id) {
1412 case AV_CODEC_ID_PCM_S8:
1413 case AV_CODEC_ID_PCM_U8:
1414 if (st->codec->bits_per_coded_sample == 16)
1415 st->codec->codec_id = AV_CODEC_ID_PCM_S16BE;
1416 break;
1417 case AV_CODEC_ID_PCM_S16LE:
1418 case AV_CODEC_ID_PCM_S16BE:
1419 if (st->codec->bits_per_coded_sample == 8)
1420 st->codec->codec_id = AV_CODEC_ID_PCM_S8;
1421 else if (st->codec->bits_per_coded_sample == 24)
1422 st->codec->codec_id =
1423 st->codec->codec_id == AV_CODEC_ID_PCM_S16BE ?
1424 AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE;
1425 break;
1426 /* set values for old format before stsd version 1 appeared */
1427 case AV_CODEC_ID_MACE3:
1428 sc->samples_per_frame = 6;
1429 sc->bytes_per_frame = 2 * st->codec->channels;
1430 break;
1431 case AV_CODEC_ID_MACE6:
1432 sc->samples_per_frame = 6;
1433 sc->bytes_per_frame = 1 * st->codec->channels;
1434 break;
1435 case AV_CODEC_ID_ADPCM_IMA_QT:
1436 sc->samples_per_frame = 64;
1437 sc->bytes_per_frame = 34 * st->codec->channels;
1438 break;
1439 case AV_CODEC_ID_GSM:
1440 sc->samples_per_frame = 160;
1441 sc->bytes_per_frame = 33;
1442 break;
1443 default:
1444 break;
1445 }
1446
1447 bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
1448 if (bits_per_sample) {
1449 st->codec->bits_per_coded_sample = bits_per_sample;
1450 sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
1451 }
1452}
1453
1454static void mov_parse_stsd_subtitle(MOVContext *c, AVIOContext *pb,
1455 AVStream *st, MOVStreamContext *sc,
1456 int size)
1457{
1458 // ttxt stsd contains display flags, justification, background
1459 // color, fonts, and default styles, so fake an atom to read it
1460 MOVAtom fake_atom = { .size = size };
1461 // mp4s contains a regular esds atom
1462 if (st->codec->codec_tag != AV_RL32("mp4s"))
1463 mov_read_glbl(c, pb, fake_atom);
1464 st->codec->width = sc->width;
1465 st->codec->height = sc->height;
1466}
1467
1468static uint32_t yuv_to_rgba(uint32_t ycbcr)
1469{
1470 uint8_t r, g, b;
1471 int y, cb, cr;
1472
1473 y = (ycbcr >> 16) & 0xFF;
1474 cr = (ycbcr >> 8) & 0xFF;
1475 cb = ycbcr & 0xFF;
1476
1477 b = av_clip_uint8(1.164 * (y - 16) + 2.018 * (cb - 128));
1478 g = av_clip_uint8(1.164 * (y - 16) - 0.813 * (cr - 128) - 0.391 * (cb - 128));
1479 r = av_clip_uint8(1.164 * (y - 16) + 1.596 * (cr - 128));
1480
1481 return (r << 16) | (g << 8) | b;
1482}
1483
1484static int mov_rewrite_dvd_sub_extradata(AVStream *st)
1485{
1486 char buf[256] = {0};
1487 uint8_t *src = st->codec->extradata;
1488 int i;
1489
1490 if (st->codec->extradata_size != 64)
1491 return 0;
1492
1493 if (st->codec->width > 0 && st->codec->height > 0)
1494 snprintf(buf, sizeof(buf), "size: %dx%d\n",
1495 st->codec->width, st->codec->height);
1496 av_strlcat(buf, "palette: ", sizeof(buf));
1497
1498 for (i = 0; i < 16; i++) {
1499 uint32_t yuv = AV_RB32(src + i * 4);
1500 uint32_t rgba = yuv_to_rgba(yuv);
1501
1502 av_strlcatf(buf, sizeof(buf), "%06"PRIx32"%s", rgba, i != 15 ? ", " : "");
1503 }
1504
1505 if (av_strlcat(buf, "\n", sizeof(buf)) >= sizeof(buf))
1506 return 0;
1507
1508 av_freep(&st->codec->extradata);
1509 st->codec->extradata_size = 0;
1510 st->codec->extradata = av_mallocz(strlen(buf) + FF_INPUT_BUFFER_PADDING_SIZE);
1511 if (!st->codec->extradata)
1512 return AVERROR(ENOMEM);
1513 st->codec->extradata_size = strlen(buf);
1514 memcpy(st->codec->extradata, buf, st->codec->extradata_size);
1515
1516 return 0;
1517}
1518
1519static int mov_parse_stsd_data(MOVContext *c, AVIOContext *pb,
1520 AVStream *st, MOVStreamContext *sc,
1521 int size)
1522{
1523 if (st->codec->codec_tag == MKTAG('t','m','c','d')) {
1524 if (ff_get_extradata(st->codec, pb, size) < 0)
1525 return AVERROR(ENOMEM);
1526 if (size > 16) {
1527 MOVStreamContext *tmcd_ctx = st->priv_data;
1528 int val;
1529 val = AV_RB32(st->codec->extradata + 4);
1530 tmcd_ctx->tmcd_flags = val;
1531 if (val & 1)
1532 st->codec->flags2 |= CODEC_FLAG2_DROP_FRAME_TIMECODE;
1533 st->codec->time_base.den = st->codec->extradata[16]; /* number of frame */
1534 st->codec->time_base.num = 1;
1535 if (size > 30) {
1536 uint32_t len = AV_RB32(st->codec->extradata + 18); /* name atom length */
1537 uint32_t format = AV_RB32(st->codec->extradata + 22);
1538 if (format == AV_RB32("name") && (int64_t)size >= (int64_t)len + 18) {
1539 uint16_t str_size = AV_RB16(st->codec->extradata + 26); /* string length */
1540 if (str_size > 0 && size >= (int)str_size + 26) {
1541 char *reel_name = av_malloc(str_size + 1);
1542 if (!reel_name)
1543 return AVERROR(ENOMEM);
1544 memcpy(reel_name, st->codec->extradata + 30, str_size);
1545 reel_name[str_size] = 0; /* Add null terminator */
1546 /* don't add reel_name if emtpy string */
1547 if (*reel_name == 0) {
1548 av_free(reel_name);
1549 } else {
1550 av_dict_set(&st->metadata, "reel_name", reel_name, AV_DICT_DONT_STRDUP_VAL);
1551 }
1552 }
1553 }
1554 }
1555 }
1556 } else {
1557 /* other codec type, just skip (rtp, mp4s ...) */
1558 avio_skip(pb, size);
1559 }
1560 return 0;
1561}
1562
1563static int mov_finalize_stsd_codec(MOVContext *c, AVIOContext *pb,
1564 AVStream *st, MOVStreamContext *sc)
1565{
1566 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
1567 !st->codec->sample_rate && sc->time_scale > 1)
1568 st->codec->sample_rate = sc->time_scale;
1569
1570 /* special codec parameters handling */
1571 switch (st->codec->codec_id) {
1572#if CONFIG_DV_DEMUXER
1573 case AV_CODEC_ID_DVAUDIO:
1574 c->dv_fctx = avformat_alloc_context();
1575 c->dv_demux = avpriv_dv_init_demux(c->dv_fctx);
1576 if (!c->dv_demux) {
1577 av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
1578 return AVERROR(ENOMEM);
1579 }
1580 sc->dv_audio_container = 1;
1581 st->codec->codec_id = AV_CODEC_ID_PCM_S16LE;
1582 break;
1583#endif
1584 /* no ifdef since parameters are always those */
1585 case AV_CODEC_ID_QCELP:
1586 st->codec->channels = 1;
1587 // force sample rate for qcelp when not stored in mov
1588 if (st->codec->codec_tag != MKTAG('Q','c','l','p'))
1589 st->codec->sample_rate = 8000;
1590 // FIXME: Why is the following needed for some files?
1591 sc->samples_per_frame = 160;
1592 if (!sc->bytes_per_frame)
1593 sc->bytes_per_frame = 35;
1594 break;
1595 case AV_CODEC_ID_AMR_NB:
1596 st->codec->channels = 1;
1597 /* force sample rate for amr, stsd in 3gp does not store sample rate */
1598 st->codec->sample_rate = 8000;
1599 break;
1600 case AV_CODEC_ID_AMR_WB:
1601 st->codec->channels = 1;
1602 st->codec->sample_rate = 16000;
1603 break;
1604 case AV_CODEC_ID_MP2:
1605 case AV_CODEC_ID_MP3:
1606 /* force type after stsd for m1a hdlr */
1607 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
1608 st->need_parsing = AVSTREAM_PARSE_FULL;
1609 break;
1610 case AV_CODEC_ID_GSM:
1611 case AV_CODEC_ID_ADPCM_MS:
1612 case AV_CODEC_ID_ADPCM_IMA_WAV:
1613 case AV_CODEC_ID_ILBC:
1614 case AV_CODEC_ID_MACE3:
1615 case AV_CODEC_ID_MACE6:
1616 case AV_CODEC_ID_QDM2:
1617 st->codec->block_align = sc->bytes_per_frame;
1618 break;
1619 case AV_CODEC_ID_ALAC:
1620 if (st->codec->extradata_size == 36) {
1621 st->codec->channels = AV_RB8 (st->codec->extradata + 21);
1622 st->codec->sample_rate = AV_RB32(st->codec->extradata + 32);
1623 }
1624 break;
1625 case AV_CODEC_ID_AC3:
1626 case AV_CODEC_ID_MPEG1VIDEO:
1627 case AV_CODEC_ID_VC1:
1628 st->need_parsing = AVSTREAM_PARSE_FULL;
1629 break;
1630 default:
1631 break;
1632 }
1633 return 0;
1634}
1635
1636static int mov_skip_multiple_stsd(MOVContext *c, AVIOContext *pb,
1637 int codec_tag, int format,
1638 int64_t size)
1639{
1640 int video_codec_id = ff_codec_get_id(ff_codec_movvideo_tags, format);
1641
1642 if (codec_tag &&
1643 (codec_tag != format &&
1644 (c->fc->video_codec_id ? video_codec_id != c->fc->video_codec_id
1645 : codec_tag != MKTAG('j','p','e','g')))) {
1646 /* Multiple fourcc, we skip JPEG. This is not correct, we should
1647 * export it as a separate AVStream but this needs a few changes
1648 * in the MOV demuxer, patch welcome. */
1649
1650 av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n");
1651 avio_skip(pb, size);
1652 return 1;
1653 }
1654 if ( codec_tag == AV_RL32("avc1") ||
1655 codec_tag == AV_RL32("hvc1") ||
1656 codec_tag == AV_RL32("hev1")
1657 )
1658 av_log(c->fc, AV_LOG_WARNING, "Concatenated H.264 or H.265 might not play correctly.\n");
1659
1660 return 0;
1661}
1662
1663int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries)
1664{
1665 AVStream *st;
1666 MOVStreamContext *sc;
1667 int pseudo_stream_id;
1668
1669 if (c->fc->nb_streams < 1)
1670 return 0;
1671 st = c->fc->streams[c->fc->nb_streams-1];
1672 sc = st->priv_data;
1673
1674 for (pseudo_stream_id = 0;
1675 pseudo_stream_id < entries && !pb->eof_reached;
1676 pseudo_stream_id++) {
1677 //Parsing Sample description table
1678 enum AVCodecID id;
1679 int ret, dref_id = 1;
1680 MOVAtom a = { AV_RL32("stsd") };
1681 int64_t start_pos = avio_tell(pb);
1682 int64_t size = avio_rb32(pb); /* size */
1683 uint32_t format = avio_rl32(pb); /* data format */
1684
1685 if (size >= 16) {
1686 avio_rb32(pb); /* reserved */
1687 avio_rb16(pb); /* reserved */
1688 dref_id = avio_rb16(pb);
1689 }else if (size <= 7){
1690 av_log(c->fc, AV_LOG_ERROR, "invalid size %"PRId64" in stsd\n", size);
1691 return AVERROR_INVALIDDATA;
1692 }
1693
1694 if (mov_skip_multiple_stsd(c, pb, st->codec->codec_tag, format,
1695 size - (avio_tell(pb) - start_pos)))
1696 continue;
1697
1698 sc->pseudo_stream_id = st->codec->codec_tag ? -1 : pseudo_stream_id;
1699 sc->dref_id= dref_id;
1700
1701 id = mov_codec_id(st, format);
1702
1703 av_dlog(c->fc, "size=%"PRId64" 4CC= %c%c%c%c codec_type=%d\n", size,
1704 (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff,
1705 (format >> 24) & 0xff, st->codec->codec_type);
1706
1707 if (st->codec->codec_type==AVMEDIA_TYPE_VIDEO) {
1708 st->codec->codec_id = id;
1709 mov_parse_stsd_video(c, pb, st, sc);
1710 } else if (st->codec->codec_type==AVMEDIA_TYPE_AUDIO) {
1711 st->codec->codec_id = id;
1712 mov_parse_stsd_audio(c, pb, st, sc);
1713 } else if (st->codec->codec_type==AVMEDIA_TYPE_SUBTITLE){
1714 st->codec->codec_id = id;
1715 mov_parse_stsd_subtitle(c, pb, st, sc,
1716 size - (avio_tell(pb) - start_pos));
1717 } else {
1718 ret = mov_parse_stsd_data(c, pb, st, sc,
1719 size - (avio_tell(pb) - start_pos));
1720 if (ret < 0)
1721 return ret;
1722 }
1723 /* this will read extra atoms at the end (wave, alac, damr, avcC, hvcC, SMI ...) */
1724 a.size = size - (avio_tell(pb) - start_pos);
1725 if (a.size > 8) {
1726 if ((ret = mov_read_default(c, pb, a)) < 0)
1727 return ret;
1728 } else if (a.size > 0)
1729 avio_skip(pb, a.size);
1730 }
1731
1732 if (pb->eof_reached)
1733 return AVERROR_EOF;
1734
1735 return mov_finalize_stsd_codec(c, pb, st, sc);
1736}
1737
1738static int mov_read_stsd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1739{
1740 int entries;
1741
1742 avio_r8(pb); /* version */
1743 avio_rb24(pb); /* flags */
1744 entries = avio_rb32(pb);
1745
1746 return ff_mov_read_stsd_entries(c, pb, entries);
1747}
1748
1749static int mov_read_stsc(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1750{
1751 AVStream *st;
1752 MOVStreamContext *sc;
1753 unsigned int i, entries;
1754
1755 if (c->fc->nb_streams < 1)
1756 return 0;
1757 st = c->fc->streams[c->fc->nb_streams-1];
1758 sc = st->priv_data;
1759
1760 avio_r8(pb); /* version */
1761 avio_rb24(pb); /* flags */
1762
1763 entries = avio_rb32(pb);
1764
1765 av_dlog(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
1766
1767 if (!entries)
1768 return 0;
1769 if (entries >= UINT_MAX / sizeof(*sc->stsc_data))
1770 return AVERROR_INVALIDDATA;
1771 sc->stsc_data = av_malloc(entries * sizeof(*sc->stsc_data));
1772 if (!sc->stsc_data)
1773 return AVERROR(ENOMEM);
1774
1775 for (i = 0; i < entries && !pb->eof_reached; i++) {
1776 sc->stsc_data[i].first = avio_rb32(pb);
1777 sc->stsc_data[i].count = avio_rb32(pb);
1778 sc->stsc_data[i].id = avio_rb32(pb);
1779 }
1780
1781 sc->stsc_count = i;
1782
1783 if (pb->eof_reached)
1784 return AVERROR_EOF;
1785
1786 return 0;
1787}
1788
1789static int mov_read_stps(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1790{
1791 AVStream *st;
1792 MOVStreamContext *sc;
1793 unsigned i, entries;
1794
1795 if (c->fc->nb_streams < 1)
1796 return 0;
1797 st = c->fc->streams[c->fc->nb_streams-1];
1798 sc = st->priv_data;
1799
1800 avio_rb32(pb); // version + flags
1801
1802 entries = avio_rb32(pb);
1803 if (entries >= UINT_MAX / sizeof(*sc->stps_data))
1804 return AVERROR_INVALIDDATA;
1805 sc->stps_data = av_malloc(entries * sizeof(*sc->stps_data));
1806 if (!sc->stps_data)
1807 return AVERROR(ENOMEM);
1808
1809 for (i = 0; i < entries && !pb->eof_reached; i++) {
1810 sc->stps_data[i] = avio_rb32(pb);
1811 //av_dlog(c->fc, "stps %d\n", sc->stps_data[i]);
1812 }
1813
1814 sc->stps_count = i;
1815
1816 if (pb->eof_reached)
1817 return AVERROR_EOF;
1818
1819 return 0;
1820}
1821
1822static int mov_read_stss(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1823{
1824 AVStream *st;
1825 MOVStreamContext *sc;
1826 unsigned int i, entries;
1827
1828 if (c->fc->nb_streams < 1)
1829 return 0;
1830 st = c->fc->streams[c->fc->nb_streams-1];
1831 sc = st->priv_data;
1832
1833 avio_r8(pb); /* version */
1834 avio_rb24(pb); /* flags */
1835
1836 entries = avio_rb32(pb);
1837
1838 av_dlog(c->fc, "keyframe_count = %d\n", entries);
1839
1840 if (!entries)
1841 {
1842 sc->keyframe_absent = 1;
1843 if (!st->need_parsing && st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
1844 st->need_parsing = AVSTREAM_PARSE_HEADERS;
1845 return 0;
1846 }
1847 if (entries >= UINT_MAX / sizeof(int))
1848 return AVERROR_INVALIDDATA;
1849 sc->keyframes = av_malloc(entries * sizeof(int));
1850 if (!sc->keyframes)
1851 return AVERROR(ENOMEM);
1852
1853 for (i = 0; i < entries && !pb->eof_reached; i++) {
1854 sc->keyframes[i] = avio_rb32(pb);
1855 //av_dlog(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
1856 }
1857
1858 sc->keyframe_count = i;
1859
1860 if (pb->eof_reached)
1861 return AVERROR_EOF;
1862
1863 return 0;
1864}
1865
1866static int mov_read_stsz(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1867{
1868 AVStream *st;
1869 MOVStreamContext *sc;
1870 unsigned int i, entries, sample_size, field_size, num_bytes;
1871 GetBitContext gb;
1872 unsigned char* buf;
1873
1874 if (c->fc->nb_streams < 1)
1875 return 0;
1876 st = c->fc->streams[c->fc->nb_streams-1];
1877 sc = st->priv_data;
1878
1879 avio_r8(pb); /* version */
1880 avio_rb24(pb); /* flags */
1881
1882 if (atom.type == MKTAG('s','t','s','z')) {
1883 sample_size = avio_rb32(pb);
1884 if (!sc->sample_size) /* do not overwrite value computed in stsd */
1885 sc->sample_size = sample_size;
1886 sc->stsz_sample_size = sample_size;
1887 field_size = 32;
1888 } else {
1889 sample_size = 0;
1890 avio_rb24(pb); /* reserved */
1891 field_size = avio_r8(pb);
1892 }
1893 entries = avio_rb32(pb);
1894
1895 av_dlog(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, entries);
1896
1897 sc->sample_count = entries;
1898 if (sample_size)
1899 return 0;
1900
1901 if (field_size != 4 && field_size != 8 && field_size != 16 && field_size != 32) {
1902 av_log(c->fc, AV_LOG_ERROR, "Invalid sample field size %d\n", field_size);
1903 return AVERROR_INVALIDDATA;
1904 }
1905
1906 if (!entries)
1907 return 0;
1908 if (entries >= UINT_MAX / sizeof(int) || entries >= (UINT_MAX - 4) / field_size)
1909 return AVERROR_INVALIDDATA;
1910 sc->sample_sizes = av_malloc(entries * sizeof(int));
1911 if (!sc->sample_sizes)
1912 return AVERROR(ENOMEM);
1913
1914 num_bytes = (entries*field_size+4)>>3;
1915
1916 buf = av_malloc(num_bytes+FF_INPUT_BUFFER_PADDING_SIZE);
1917 if (!buf) {
1918 av_freep(&sc->sample_sizes);
1919 return AVERROR(ENOMEM);
1920 }
1921
1922 if (avio_read(pb, buf, num_bytes) < num_bytes) {
1923 av_freep(&sc->sample_sizes);
1924 av_free(buf);
1925 return AVERROR_INVALIDDATA;
1926 }
1927
1928 init_get_bits(&gb, buf, 8*num_bytes);
1929
1930 for (i = 0; i < entries && !pb->eof_reached; i++) {
1931 sc->sample_sizes[i] = get_bits_long(&gb, field_size);
1932 sc->data_size += sc->sample_sizes[i];
1933 }
1934
1935 sc->sample_count = i;
1936
1937 if (pb->eof_reached)
1938 return AVERROR_EOF;
1939
1940 av_free(buf);
1941 return 0;
1942}
1943
1944static int mov_read_stts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1945{
1946 AVStream *st;
1947 MOVStreamContext *sc;
1948 unsigned int i, entries;
1949 int64_t duration=0;
1950 int64_t total_sample_count=0;
1951
1952 if (c->fc->nb_streams < 1)
1953 return 0;
1954 st = c->fc->streams[c->fc->nb_streams-1];
1955 sc = st->priv_data;
1956
1957 avio_r8(pb); /* version */
1958 avio_rb24(pb); /* flags */
1959 entries = avio_rb32(pb);
1960
1961 av_dlog(c->fc, "track[%i].stts.entries = %i\n",
1962 c->fc->nb_streams-1, entries);
1963
1964 if (entries >= UINT_MAX / sizeof(*sc->stts_data))
1965 return -1;
1966
1967 av_free(sc->stts_data);
1968 sc->stts_data = av_malloc(entries * sizeof(*sc->stts_data));
1969 if (!sc->stts_data)
1970 return AVERROR(ENOMEM);
1971
1972 for (i = 0; i < entries && !pb->eof_reached; i++) {
1973 int sample_duration;
1974 int sample_count;
1975
1976 sample_count=avio_rb32(pb);
1977 sample_duration = avio_rb32(pb);
1978
1979 /* sample_duration < 0 is invalid based on the spec */
1980 if (sample_duration < 0) {
1981 av_log(c->fc, AV_LOG_ERROR, "Invalid SampleDelta %d in STTS, at %d st:%d\n",
1982 sample_duration, i, c->fc->nb_streams-1);
1983 sample_duration = 1;
1984 }
1985 if (sample_count < 0) {
1986 av_log(c->fc, AV_LOG_ERROR, "Invalid sample_count=%d\n", sample_count);
1987 return AVERROR_INVALIDDATA;
1988 }
1989 sc->stts_data[i].count= sample_count;
1990 sc->stts_data[i].duration= sample_duration;
1991
1992 av_dlog(c->fc, "sample_count=%d, sample_duration=%d\n",
1993 sample_count, sample_duration);
1994
1995 if ( i+1 == entries
1996 && i
1997 && sample_count == 1
1998 && total_sample_count > 100
1999 && sample_duration/10 > duration / total_sample_count)
2000 sample_duration = duration / total_sample_count;
2001 duration+=(int64_t)sample_duration*sample_count;
2002 total_sample_count+=sample_count;
2003 }
2004
2005 sc->stts_count = i;
2006
2007 sc->duration_for_fps += duration;
2008 sc->nb_frames_for_fps += total_sample_count;
2009
2010 if (pb->eof_reached)
2011 return AVERROR_EOF;
2012
2013 st->nb_frames= total_sample_count;
2014 if (duration)
2015 st->duration= duration;
2016 sc->track_end = duration;
2017 return 0;
2018}
2019
2020static void mov_update_dts_shift(MOVStreamContext *sc, int duration)
2021{
2022 if (duration < 0) {
2023 sc->dts_shift = FFMAX(sc->dts_shift, -duration);
2024 }
2025}
2026
2027static int mov_read_ctts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2028{
2029 AVStream *st;
2030 MOVStreamContext *sc;
2031 unsigned int i, entries;
2032
2033 if (c->fc->nb_streams < 1)
2034 return 0;
2035 st = c->fc->streams[c->fc->nb_streams-1];
2036 sc = st->priv_data;
2037
2038 avio_r8(pb); /* version */
2039 avio_rb24(pb); /* flags */
2040 entries = avio_rb32(pb);
2041
2042 av_dlog(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
2043
2044 if (!entries)
2045 return 0;
2046 if (entries >= UINT_MAX / sizeof(*sc->ctts_data))
2047 return AVERROR_INVALIDDATA;
2048 sc->ctts_data = av_malloc(entries * sizeof(*sc->ctts_data));
2049 if (!sc->ctts_data)
2050 return AVERROR(ENOMEM);
2051
2052 for (i = 0; i < entries && !pb->eof_reached; i++) {
2053 int count =avio_rb32(pb);
2054 int duration =avio_rb32(pb);
2055
2056 sc->ctts_data[i].count = count;
2057 sc->ctts_data[i].duration= duration;
2058
2059 av_dlog(c->fc, "count=%d, duration=%d\n",
2060 count, duration);
2061
2062 if (FFABS(duration) > (1<<28) && i+2<entries) {
2063 av_log(c->fc, AV_LOG_WARNING, "CTTS invalid\n");
2064 av_freep(&sc->ctts_data);
2065 sc->ctts_count = 0;
2066 return 0;
2067 }
2068
2069 if (i+2<entries)
2070 mov_update_dts_shift(sc, duration);
2071 }
2072
2073 sc->ctts_count = i;
2074
2075 if (pb->eof_reached)
2076 return AVERROR_EOF;
2077
2078 av_dlog(c->fc, "dts shift %d\n", sc->dts_shift);
2079
2080 return 0;
2081}
2082
2083static int mov_read_sbgp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2084{
2085 AVStream *st;
2086 MOVStreamContext *sc;
2087 unsigned int i, entries;
2088 uint8_t version;
2089 uint32_t grouping_type;
2090
2091 if (c->fc->nb_streams < 1)
2092 return 0;
2093 st = c->fc->streams[c->fc->nb_streams-1];
2094 sc = st->priv_data;
2095
2096 version = avio_r8(pb); /* version */
2097 avio_rb24(pb); /* flags */
2098 grouping_type = avio_rl32(pb);
2099 if (grouping_type != MKTAG( 'r','a','p',' '))
2100 return 0; /* only support 'rap ' grouping */
2101 if (version == 1)
2102 avio_rb32(pb); /* grouping_type_parameter */
2103
2104 entries = avio_rb32(pb);
2105 if (!entries)
2106 return 0;
2107 if (entries >= UINT_MAX / sizeof(*sc->rap_group))
2108 return AVERROR_INVALIDDATA;
2109 sc->rap_group = av_malloc(entries * sizeof(*sc->rap_group));
2110 if (!sc->rap_group)
2111 return AVERROR(ENOMEM);
2112
2113 for (i = 0; i < entries && !pb->eof_reached; i++) {
2114 sc->rap_group[i].count = avio_rb32(pb); /* sample_count */
2115 sc->rap_group[i].index = avio_rb32(pb); /* group_description_index */
2116 }
2117
2118 sc->rap_group_count = i;
2119
2120 return pb->eof_reached ? AVERROR_EOF : 0;
2121}
2122
2123static void mov_build_index(MOVContext *mov, AVStream *st)
2124{
2125 MOVStreamContext *sc = st->priv_data;
2126 int64_t current_offset;
2127 int64_t current_dts = 0;
2128 unsigned int stts_index = 0;
2129 unsigned int stsc_index = 0;
2130 unsigned int stss_index = 0;
2131 unsigned int stps_index = 0;
2132 unsigned int i, j;
2133 uint64_t stream_size = 0;
2134
2135 /* adjust first dts according to edit list */
2136 if ((sc->empty_duration || sc->start_time) && mov->time_scale > 0) {
2137 if (sc->empty_duration)
2138 sc->empty_duration = av_rescale(sc->empty_duration, sc->time_scale, mov->time_scale);
2139 sc->time_offset = sc->start_time - sc->empty_duration;
2140 current_dts = -sc->time_offset;
2141 if (sc->ctts_count>0 && sc->stts_count>0 &&
2142 sc->ctts_data[0].duration / FFMAX(sc->stts_data[0].duration, 1) > 16) {
2143 /* more than 16 frames delay, dts are likely wrong
2144 this happens with files created by iMovie */
2145 sc->wrong_dts = 1;
2146 st->codec->has_b_frames = 1;
2147 }
2148 }
2149
2150 /* only use old uncompressed audio chunk demuxing when stts specifies it */
2151 if (!(st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
2152 sc->stts_count == 1 && sc->stts_data[0].duration == 1)) {
2153 unsigned int current_sample = 0;
2154 unsigned int stts_sample = 0;
2155 unsigned int sample_size;
2156 unsigned int distance = 0;
2157 unsigned int rap_group_index = 0;
2158 unsigned int rap_group_sample = 0;
2159 int rap_group_present = sc->rap_group_count && sc->rap_group;
2160 int key_off = (sc->keyframe_count && sc->keyframes[0] > 0) || (sc->stps_count && sc->stps_data[0] > 0);
2161
2162 current_dts -= sc->dts_shift;
2163
2164 if (!sc->sample_count || st->nb_index_entries)
2165 return;
2166 if (sc->sample_count >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries)
2167 return;
2168 if (av_reallocp_array(&st->index_entries,
2169 st->nb_index_entries + sc->sample_count,
2170 sizeof(*st->index_entries)) < 0) {
2171 st->nb_index_entries = 0;
2172 return;
2173 }
2174 st->index_entries_allocated_size = (st->nb_index_entries + sc->sample_count) * sizeof(*st->index_entries);
2175
2176 for (i = 0; i < sc->chunk_count; i++) {
2177 int64_t next_offset = i+1 < sc->chunk_count ? sc->chunk_offsets[i+1] : INT64_MAX;
2178 current_offset = sc->chunk_offsets[i];
2179 while (stsc_index + 1 < sc->stsc_count &&
2180 i + 1 == sc->stsc_data[stsc_index + 1].first)
2181 stsc_index++;
2182
2183 if (next_offset > current_offset && sc->sample_size>0 && sc->sample_size < sc->stsz_sample_size &&
2184 sc->stsc_data[stsc_index].count * (int64_t)sc->stsz_sample_size > next_offset - current_offset) {
2185 av_log(mov->fc, AV_LOG_WARNING, "STSZ sample size %d invalid (too large), ignoring\n", sc->stsz_sample_size);
2186 sc->stsz_sample_size = sc->sample_size;
2187 }
2188 if (sc->stsz_sample_size>0 && sc->stsz_sample_size < sc->sample_size) {
2189 av_log(mov->fc, AV_LOG_WARNING, "STSZ sample size %d invalid (too small), ignoring\n", sc->stsz_sample_size);
2190 sc->stsz_sample_size = sc->sample_size;
2191 }
2192
2193 for (j = 0; j < sc->stsc_data[stsc_index].count; j++) {
2194 int keyframe = 0;
2195 if (current_sample >= sc->sample_count) {
2196 av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
2197 return;
2198 }
2199
2200 if (!sc->keyframe_absent && (!sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index])) {
2201 keyframe = 1;
2202 if (stss_index + 1 < sc->keyframe_count)
2203 stss_index++;
2204 } else if (sc->stps_count && current_sample+key_off == sc->stps_data[stps_index]) {
2205 keyframe = 1;
2206 if (stps_index + 1 < sc->stps_count)
2207 stps_index++;
2208 }
2209 if (rap_group_present && rap_group_index < sc->rap_group_count) {
2210 if (sc->rap_group[rap_group_index].index > 0)
2211 keyframe = 1;
2212 if (++rap_group_sample == sc->rap_group[rap_group_index].count) {
2213 rap_group_sample = 0;
2214 rap_group_index++;
2215 }
2216 }
2217 if (sc->keyframe_absent
2218 && !sc->stps_count
2219 && !rap_group_present
2220 && (st->codec->codec_type == AVMEDIA_TYPE_AUDIO || (i==0 && j==0)))
2221 keyframe = 1;
2222 if (keyframe)
2223 distance = 0;
2224 sample_size = sc->stsz_sample_size > 0 ? sc->stsz_sample_size : sc->sample_sizes[current_sample];
2225 if (sc->pseudo_stream_id == -1 ||
2226 sc->stsc_data[stsc_index].id - 1 == sc->pseudo_stream_id) {
2227 AVIndexEntry *e = &st->index_entries[st->nb_index_entries++];
2228 e->pos = current_offset;
2229 e->timestamp = current_dts;
2230 e->size = sample_size;
2231 e->min_distance = distance;
2232 e->flags = keyframe ? AVINDEX_KEYFRAME : 0;
2233 av_dlog(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
2234 "size %d, distance %d, keyframe %d\n", st->index, current_sample,
2235 current_offset, current_dts, sample_size, distance, keyframe);
2236 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && st->nb_index_entries < 100)
2237 ff_rfps_add_frame(mov->fc, st, current_dts);
2238 }
2239
2240 current_offset += sample_size;
2241 stream_size += sample_size;
2242 current_dts += sc->stts_data[stts_index].duration;
2243 distance++;
2244 stts_sample++;
2245 current_sample++;
2246 if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
2247 stts_sample = 0;
2248 stts_index++;
2249 }
2250 }
2251 }
2252 if (st->duration > 0)
2253 st->codec->bit_rate = stream_size*8*sc->time_scale/st->duration;
2254 } else {
2255 unsigned chunk_samples, total = 0;
2256
2257 // compute total chunk count
2258 for (i = 0; i < sc->stsc_count; i++) {
2259 unsigned count, chunk_count;
2260
2261 chunk_samples = sc->stsc_data[i].count;
2262 if (i != sc->stsc_count - 1 &&
2263 sc->samples_per_frame && chunk_samples % sc->samples_per_frame) {
2264 av_log(mov->fc, AV_LOG_ERROR, "error unaligned chunk\n");
2265 return;
2266 }
2267
2268 if (sc->samples_per_frame >= 160) { // gsm
2269 count = chunk_samples / sc->samples_per_frame;
2270 } else if (sc->samples_per_frame > 1) {
2271 unsigned samples = (1024/sc->samples_per_frame)*sc->samples_per_frame;
2272 count = (chunk_samples+samples-1) / samples;
2273 } else {
2274 count = (chunk_samples+1023) / 1024;
2275 }
2276
2277 if (i < sc->stsc_count - 1)
2278 chunk_count = sc->stsc_data[i+1].first - sc->stsc_data[i].first;
2279 else
2280 chunk_count = sc->chunk_count - (sc->stsc_data[i].first - 1);
2281 total += chunk_count * count;
2282 }
2283
2284 av_dlog(mov->fc, "chunk count %d\n", total);
2285 if (total >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries)
2286 return;
2287 if (av_reallocp_array(&st->index_entries,
2288 st->nb_index_entries + total,
2289 sizeof(*st->index_entries)) < 0) {
2290 st->nb_index_entries = 0;
2291 return;
2292 }
2293 st->index_entries_allocated_size = (st->nb_index_entries + total) * sizeof(*st->index_entries);
2294
2295 // populate index
2296 for (i = 0; i < sc->chunk_count; i++) {
2297 current_offset = sc->chunk_offsets[i];
2298 if (stsc_index + 1 < sc->stsc_count &&
2299 i + 1 == sc->stsc_data[stsc_index + 1].first)
2300 stsc_index++;
2301 chunk_samples = sc->stsc_data[stsc_index].count;
2302
2303 while (chunk_samples > 0) {
2304 AVIndexEntry *e;
2305 unsigned size, samples;
2306
2307 if (sc->samples_per_frame >= 160) { // gsm
2308 samples = sc->samples_per_frame;
2309 size = sc->bytes_per_frame;
2310 } else {
2311 if (sc->samples_per_frame > 1) {
2312 samples = FFMIN((1024 / sc->samples_per_frame)*
2313 sc->samples_per_frame, chunk_samples);
2314 size = (samples / sc->samples_per_frame) * sc->bytes_per_frame;
2315 } else {
2316 samples = FFMIN(1024, chunk_samples);
2317 size = samples * sc->sample_size;
2318 }
2319 }
2320
2321 if (st->nb_index_entries >= total) {
2322 av_log(mov->fc, AV_LOG_ERROR, "wrong chunk count %d\n", total);
2323 return;
2324 }
2325 e = &st->index_entries[st->nb_index_entries++];
2326 e->pos = current_offset;
2327 e->timestamp = current_dts;
2328 e->size = size;
2329 e->min_distance = 0;
2330 e->flags = AVINDEX_KEYFRAME;
2331 av_dlog(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", "
2332 "size %d, duration %d\n", st->index, i, current_offset, current_dts,
2333 size, samples);
2334
2335 current_offset += size;
2336 current_dts += samples;
2337 chunk_samples -= samples;
2338 }
2339 }
2340 }
2341}
2342
2343static int mov_open_dref(AVIOContext **pb, const char *src, MOVDref *ref,
2344 AVIOInterruptCB *int_cb, int use_absolute_path, AVFormatContext *fc)
2345{
2346 /* try relative path, we do not try the absolute because it can leak information about our
2347 system to an attacker */
2348 if (ref->nlvl_to > 0 && ref->nlvl_from > 0) {
2349 char filename[1024];
2350 const char *src_path;
2351 int i, l;
2352
2353 /* find a source dir */
2354 src_path = strrchr(src, '/');
2355 if (src_path)
2356 src_path++;
2357 else
2358 src_path = src;
2359
2360 /* find a next level down to target */
2361 for (i = 0, l = strlen(ref->path) - 1; l >= 0; l--)
2362 if (ref->path[l] == '/') {
2363 if (i == ref->nlvl_to - 1)
2364 break;
2365 else
2366 i++;
2367 }
2368
2369 /* compose filename if next level down to target was found */
2370 if (i == ref->nlvl_to - 1 && src_path - src < sizeof(filename)) {
2371 memcpy(filename, src, src_path - src);
2372 filename[src_path - src] = 0;
2373
2374 for (i = 1; i < ref->nlvl_from; i++)
2375 av_strlcat(filename, "../", 1024);
2376
2377 av_strlcat(filename, ref->path + l + 1, 1024);
2378
2379 if (!avio_open2(pb, filename, AVIO_FLAG_READ, int_cb, NULL))
2380 return 0;
2381 }
2382 } else if (use_absolute_path) {
2383 av_log(fc, AV_LOG_WARNING, "Using absolute path on user request, "
2384 "this is a possible security issue\n");
2385 if (!avio_open2(pb, ref->path, AVIO_FLAG_READ, int_cb, NULL))
2386 return 0;
2387 }
2388
2389 return AVERROR(ENOENT);
2390}
2391
2392static void fix_timescale(MOVContext *c, MOVStreamContext *sc)
2393{
2394 if (sc->time_scale <= 0) {
2395 av_log(c->fc, AV_LOG_WARNING, "stream %d, timescale not set\n", sc->ffindex);
2396 sc->time_scale = c->time_scale;
2397 if (sc->time_scale <= 0)
2398 sc->time_scale = 1;
2399 }
2400}
2401
2402static int mov_read_trak(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2403{
2404 AVStream *st;
2405 MOVStreamContext *sc;
2406 int ret;
2407
2408 st = avformat_new_stream(c->fc, NULL);
2409 if (!st) return AVERROR(ENOMEM);
2410 st->id = c->fc->nb_streams;
2411 sc = av_mallocz(sizeof(MOVStreamContext));
2412 if (!sc) return AVERROR(ENOMEM);
2413
2414 st->priv_data = sc;
2415 st->codec->codec_type = AVMEDIA_TYPE_DATA;
2416 sc->ffindex = st->index;
2417
2418 if ((ret = mov_read_default(c, pb, atom)) < 0)
2419 return ret;
2420
2421 /* sanity checks */
2422 if (sc->chunk_count && (!sc->stts_count || !sc->stsc_count ||
2423 (!sc->sample_size && !sc->sample_count))) {
2424 av_log(c->fc, AV_LOG_ERROR, "stream %d, missing mandatory atoms, broken header\n",
2425 st->index);
2426 return 0;
2427 }
2428
2429 fix_timescale(c, sc);
2430
2431 avpriv_set_pts_info(st, 64, 1, sc->time_scale);
2432
2433 mov_build_index(c, st);
2434
2435 if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) {
2436 MOVDref *dref = &sc->drefs[sc->dref_id - 1];
2437 if (mov_open_dref(&sc->pb, c->fc->filename, dref, &c->fc->interrupt_callback,
2438 c->use_absolute_path, c->fc) < 0)
2439 av_log(c->fc, AV_LOG_ERROR,
2440 "stream %d, error opening alias: path='%s', dir='%s', "
2441 "filename='%s', volume='%s', nlvl_from=%d, nlvl_to=%d\n",
2442 st->index, dref->path, dref->dir, dref->filename,
2443 dref->volume, dref->nlvl_from, dref->nlvl_to);
2444 } else {
2445 sc->pb = c->fc->pb;
2446 sc->pb_is_copied = 1;
2447 }
2448
2449 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2450 if (!st->sample_aspect_ratio.num &&
2451 (st->codec->width != sc->width || st->codec->height != sc->height)) {
2452 st->sample_aspect_ratio = av_d2q(((double)st->codec->height * sc->width) /
2453 ((double)st->codec->width * sc->height), INT_MAX);
2454 }
2455
2456#if FF_API_R_FRAME_RATE
2457 if (sc->stts_count == 1 || (sc->stts_count == 2 && sc->stts_data[1].count == 1))
2458 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den,
2459 sc->time_scale, sc->stts_data[0].duration, INT_MAX);
2460#endif
2461 }
2462
2463 // done for ai5q, ai52, ai55, ai1q, ai12 and ai15.
2464 if (!st->codec->extradata_size && st->codec->codec_id == AV_CODEC_ID_H264 &&
2465 TAG_IS_AVCI(st->codec->codec_tag)) {
2466 ret = ff_generate_avci_extradata(st);
2467 if (ret < 0)
2468 return ret;
2469 }
2470
2471 switch (st->codec->codec_id) {
2472#if CONFIG_H261_DECODER
2473 case AV_CODEC_ID_H261:
2474#endif
2475#if CONFIG_H263_DECODER
2476 case AV_CODEC_ID_H263:
2477#endif
2478#if CONFIG_MPEG4_DECODER
2479 case AV_CODEC_ID_MPEG4:
2480#endif
2481 st->codec->width = 0; /* let decoder init width/height */
2482 st->codec->height= 0;
2483 break;
2484 }
2485
2486 /* Do not need those anymore. */
2487 av_freep(&sc->chunk_offsets);
2488 av_freep(&sc->stsc_data);
2489 av_freep(&sc->sample_sizes);
2490 av_freep(&sc->keyframes);
2491 av_freep(&sc->stts_data);
2492 av_freep(&sc->stps_data);
2493 av_freep(&sc->rap_group);
2494
2495 return 0;
2496}
2497
2498static int mov_read_ilst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2499{
2500 int ret;
2501 c->itunes_metadata = 1;
2502 ret = mov_read_default(c, pb, atom);
2503 c->itunes_metadata = 0;
2504 return ret;
2505}
2506
2507static int mov_read_custom_2plus(MOVContext *c, AVIOContext *pb, int size)
2508{
2509 int64_t end = avio_tell(pb) + size;
2510 uint8_t *key = NULL, *val = NULL;
2511 int i;
2512 AVStream *st;
2513 MOVStreamContext *sc;
2514
2515 if (c->fc->nb_streams < 1)
2516 return 0;
2517 st = c->fc->streams[c->fc->nb_streams-1];
2518 sc = st->priv_data;
2519
2520 for (i = 0; i < 2; i++) {
2521 uint8_t **p;
2522 uint32_t len, tag;
2523
2524 if (end - avio_tell(pb) <= 12)
2525 break;
2526
2527 len = avio_rb32(pb);
2528 tag = avio_rl32(pb);
2529 avio_skip(pb, 4); // flags
2530
2531 if (len < 12 || len - 12 > end - avio_tell(pb))
2532 break;
2533 len -= 12;
2534
2535 if (tag == MKTAG('n', 'a', 'm', 'e'))
2536 p = &key;
2537 else if (tag == MKTAG('d', 'a', 't', 'a') && len > 4) {
2538 avio_skip(pb, 4);
2539 len -= 4;
2540 p = &val;
2541 } else
2542 break;
2543
2544 *p = av_malloc(len + 1);
2545 if (!*p)
2546 break;
2547 avio_read(pb, *p, len);
2548 (*p)[len] = 0;
2549 }
2550
2551 if (key && val) {
2552 if (strcmp(key, "iTunSMPB") == 0) {
2553 int priming, remainder, samples;
2554 if(sscanf(val, "%*X %X %X %X", &priming, &remainder, &samples) == 3){
2555 if(priming>0 && priming<16384)
2556 sc->start_pad = priming;
2557 }
2558 }
2559 if (strcmp(key, "cdec") != 0) {
2560 av_dict_set(&c->fc->metadata, key, val,
2561 AV_DICT_DONT_STRDUP_KEY | AV_DICT_DONT_STRDUP_VAL);
2562 key = val = NULL;
2563 }
2564 }
2565
2566 avio_seek(pb, end, SEEK_SET);
2567 av_freep(&key);
2568 av_freep(&val);
2569 return 0;
2570}
2571
2572static int mov_read_custom(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2573{
2574 int64_t end = avio_tell(pb) + atom.size;
2575 uint32_t tag, len;
2576
2577 if (atom.size < 8)
2578 goto fail;
2579
2580 len = avio_rb32(pb);
2581 tag = avio_rl32(pb);
2582
2583 if (len > atom.size)
2584 goto fail;
2585
2586 if (tag == MKTAG('m', 'e', 'a', 'n') && len > 12) {
2587 uint8_t domain[128];
2588 int domain_len;
2589
2590 avio_skip(pb, 4); // flags
2591 len -= 12;
2592
2593 domain_len = avio_get_str(pb, len, domain, sizeof(domain));
2594 avio_skip(pb, len - domain_len);
2595 return mov_read_custom_2plus(c, pb, end - avio_tell(pb));
2596 }
2597
2598fail:
2599 av_log(c->fc, AV_LOG_VERBOSE,
2600 "Unhandled or malformed custom metadata of size %"PRId64"\n", atom.size);
2601 return 0;
2602}
2603
2604static int mov_read_meta(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2605{
2606 while (atom.size > 8) {
2607 uint32_t tag = avio_rl32(pb);
2608 atom.size -= 4;
2609 if (tag == MKTAG('h','d','l','r')) {
2610 avio_seek(pb, -8, SEEK_CUR);
2611 atom.size += 8;
2612 return mov_read_default(c, pb, atom);
2613 }
2614 }
2615 return 0;
2616}
2617
2618static int mov_read_tkhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2619{
2620 int i;
2621 int width;
2622 int height;
2623 int64_t disp_transform[2];
2624 int display_matrix[3][3];
2625 AVStream *st;
2626 MOVStreamContext *sc;
2627 int version;
2628 int flags;
2629
2630 if (c->fc->nb_streams < 1)
2631 return 0;
2632 st = c->fc->streams[c->fc->nb_streams-1];
2633 sc = st->priv_data;
2634
2635 version = avio_r8(pb);
2636 flags = avio_rb24(pb);
2637 st->disposition |= (flags & MOV_TKHD_FLAG_ENABLED) ? AV_DISPOSITION_DEFAULT : 0;
2638
2639 if (version == 1) {
2640 avio_rb64(pb);
2641 avio_rb64(pb);
2642 } else {
2643 avio_rb32(pb); /* creation time */
2644 avio_rb32(pb); /* modification time */
2645 }
2646 st->id = (int)avio_rb32(pb); /* track id (NOT 0 !)*/
2647 avio_rb32(pb); /* reserved */
2648
2649 /* highlevel (considering edits) duration in movie timebase */
2650 (version == 1) ? avio_rb64(pb) : avio_rb32(pb);
2651 avio_rb32(pb); /* reserved */
2652 avio_rb32(pb); /* reserved */
2653
2654 avio_rb16(pb); /* layer */
2655 avio_rb16(pb); /* alternate group */
2656 avio_rb16(pb); /* volume */
2657 avio_rb16(pb); /* reserved */
2658
2659 //read in the display matrix (outlined in ISO 14496-12, Section 6.2.2)
2660 // they're kept in fixed point format through all calculations
2661 // save u,v,z to store the whole matrix in the AV_PKT_DATA_DISPLAYMATRIX
2662 // side data, but the scale factor is not needed to calculate aspect ratio
2663 for (i = 0; i < 3; i++) {
2664 display_matrix[i][0] = avio_rb32(pb); // 16.16 fixed point
2665 display_matrix[i][1] = avio_rb32(pb); // 16.16 fixed point
2666 display_matrix[i][2] = avio_rb32(pb); // 2.30 fixed point
2667 }
2668
2669 width = avio_rb32(pb); // 16.16 fixed point track width
2670 height = avio_rb32(pb); // 16.16 fixed point track height
2671 sc->width = width >> 16;
2672 sc->height = height >> 16;
2673
2674 // save the matrix and add rotate metadata when it is not the default
2675 // identity
2676 if (display_matrix[0][0] != (1 << 16) ||
2677 display_matrix[1][1] != (1 << 16) ||
2678 display_matrix[2][2] != (1 << 30) ||
2679 display_matrix[0][1] || display_matrix[0][2] ||
2680 display_matrix[1][0] || display_matrix[1][2] ||
2681 display_matrix[2][0] || display_matrix[2][1]) {
2682 int i, j;
2683 double rotate;
2684
2685 av_freep(&sc->display_matrix);
2686 sc->display_matrix = av_malloc(sizeof(int32_t) * 9);
2687 if (!sc->display_matrix)
2688 return AVERROR(ENOMEM);
2689
2690 for (i = 0; i < 3; i++)
2691 for (j = 0; j < 3; j++)
2692 sc->display_matrix[i * 3 + j] = display_matrix[j][i];
2693
2694 rotate = av_display_rotation_get(sc->display_matrix);
2695 if (!isnan(rotate)) {
2696 char rotate_buf[64];
2697 rotate = -rotate;
2698 if (rotate < 0) // for backward compatibility
2699 rotate += 360;
2700 snprintf(rotate_buf, sizeof(rotate_buf), "%g", rotate);
2701 av_dict_set(&st->metadata, "rotate", rotate_buf, 0);
2702 }
2703 }
2704
2705 // transform the display width/height according to the matrix
2706 // skip this if the display matrix is the default identity matrix
2707 // or if it is rotating the picture, ex iPhone 3GS
2708 // to keep the same scale, use [width height 1<<16]
2709 if (width && height &&
2710 ((display_matrix[0][0] != 65536 ||
2711 display_matrix[1][1] != 65536) &&
2712 !display_matrix[0][1] &&
2713 !display_matrix[1][0] &&
2714 !display_matrix[2][0] && !display_matrix[2][1])) {
2715 for (i = 0; i < 2; i++)
2716 disp_transform[i] =
2717 (int64_t) width * display_matrix[0][i] +
2718 (int64_t) height * display_matrix[1][i] +
2719 ((int64_t) display_matrix[2][i] << 16);
2720
2721 //sample aspect ratio is new width/height divided by old width/height
2722 st->sample_aspect_ratio = av_d2q(
2723 ((double) disp_transform[0] * height) /
2724 ((double) disp_transform[1] * width), INT_MAX);
2725 }
2726 return 0;
2727}
2728
2729static int mov_read_tfhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2730{
2731 MOVFragment *frag = &c->fragment;
2732 MOVTrackExt *trex = NULL;
2733 int flags, track_id, i;
2734
2735 avio_r8(pb); /* version */
2736 flags = avio_rb24(pb);
2737
2738 track_id = avio_rb32(pb);
2739 if (!track_id)
2740 return AVERROR_INVALIDDATA;
2741 frag->track_id = track_id;
2742 for (i = 0; i < c->trex_count; i++)
2743 if (c->trex_data[i].track_id == frag->track_id) {
2744 trex = &c->trex_data[i];
2745 break;
2746 }
2747 if (!trex) {
2748 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding trex\n");
2749 return AVERROR_INVALIDDATA;
2750 }
2751
2752 frag->base_data_offset = flags & MOV_TFHD_BASE_DATA_OFFSET ?
2753 avio_rb64(pb) : flags & MOV_TFHD_DEFAULT_BASE_IS_MOOF ?
2754 frag->moof_offset : frag->implicit_offset;
2755 frag->stsd_id = flags & MOV_TFHD_STSD_ID ? avio_rb32(pb) : trex->stsd_id;
2756
2757 frag->duration = flags & MOV_TFHD_DEFAULT_DURATION ?
2758 avio_rb32(pb) : trex->duration;
2759 frag->size = flags & MOV_TFHD_DEFAULT_SIZE ?
2760 avio_rb32(pb) : trex->size;
2761 frag->flags = flags & MOV_TFHD_DEFAULT_FLAGS ?
2762 avio_rb32(pb) : trex->flags;
2763 av_dlog(c->fc, "frag flags 0x%x\n", frag->flags);
2764 return 0;
2765}
2766
2767static int mov_read_chap(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2768{
2769 c->chapter_track = avio_rb32(pb);
2770 return 0;
2771}
2772
2773static int mov_read_trex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2774{
2775 MOVTrackExt *trex;
2776 int err;
2777
2778 if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data))
2779 return AVERROR_INVALIDDATA;
2780 if ((err = av_reallocp_array(&c->trex_data, c->trex_count + 1,
2781 sizeof(*c->trex_data))) < 0) {
2782 c->trex_count = 0;
2783 return err;
2784 }
2785
2786 c->fc->duration = AV_NOPTS_VALUE; // the duration from mvhd is not representing the whole file when fragments are used.
2787
2788 trex = &c->trex_data[c->trex_count++];
2789 avio_r8(pb); /* version */
2790 avio_rb24(pb); /* flags */
2791 trex->track_id = avio_rb32(pb);
2792 trex->stsd_id = avio_rb32(pb);
2793 trex->duration = avio_rb32(pb);
2794 trex->size = avio_rb32(pb);
2795 trex->flags = avio_rb32(pb);
2796 return 0;
2797}
2798
2799static int mov_read_trun(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2800{
2801 MOVFragment *frag = &c->fragment;
2802 AVStream *st = NULL;
2803 MOVStreamContext *sc;
2804 MOVStts *ctts_data;
2805 uint64_t offset;
2806 int64_t dts;
2807 int data_offset = 0;
2808 unsigned entries, first_sample_flags = frag->flags;
2809 int flags, distance, i, found_keyframe = 0, err;
2810
2811 for (i = 0; i < c->fc->nb_streams; i++) {
2812 if (c->fc->streams[i]->id == frag->track_id) {
2813 st = c->fc->streams[i];
2814 break;
2815 }
2816 }
2817 if (!st) {
2818 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id);
2819 return AVERROR_INVALIDDATA;
2820 }
2821 sc = st->priv_data;
2822 if (sc->pseudo_stream_id+1 != frag->stsd_id && sc->pseudo_stream_id != -1)
2823 return 0;
2824 avio_r8(pb); /* version */
2825 flags = avio_rb24(pb);
2826 entries = avio_rb32(pb);
2827 av_dlog(c->fc, "flags 0x%x entries %d\n", flags, entries);
2828
2829 /* Always assume the presence of composition time offsets.
2830 * Without this assumption, for instance, we cannot deal with a track in fragmented movies that meet the following.
2831 * 1) in the initial movie, there are no samples.
2832 * 2) in the first movie fragment, there is only one sample without composition time offset.
2833 * 3) in the subsequent movie fragments, there are samples with composition time offset. */
2834 if (!sc->ctts_count && sc->sample_count)
2835 {
2836 /* Complement ctts table if moov atom doesn't have ctts atom. */
2837 ctts_data = av_realloc(NULL, sizeof(*sc->ctts_data));
2838 if (!ctts_data)
2839 return AVERROR(ENOMEM);
2840 sc->ctts_data = ctts_data;
2841 sc->ctts_data[sc->ctts_count].count = sc->sample_count;
2842 sc->ctts_data[sc->ctts_count].duration = 0;
2843 sc->ctts_count++;
2844 }
2845 if ((uint64_t)entries+sc->ctts_count >= UINT_MAX/sizeof(*sc->ctts_data))
2846 return AVERROR_INVALIDDATA;
2847 if ((err = av_reallocp_array(&sc->ctts_data, entries + sc->ctts_count,
2848 sizeof(*sc->ctts_data))) < 0) {
2849 sc->ctts_count = 0;
2850 return err;
2851 }
2852 if (flags & MOV_TRUN_DATA_OFFSET) data_offset = avio_rb32(pb);
2853 if (flags & MOV_TRUN_FIRST_SAMPLE_FLAGS) first_sample_flags = avio_rb32(pb);
2854 dts = sc->track_end - sc->time_offset;
2855 offset = frag->base_data_offset + data_offset;
2856 distance = 0;
2857 av_dlog(c->fc, "first sample flags 0x%x\n", first_sample_flags);
2858 for (i = 0; i < entries && !pb->eof_reached; i++) {
2859 unsigned sample_size = frag->size;
2860 int sample_flags = i ? frag->flags : first_sample_flags;
2861 unsigned sample_duration = frag->duration;
2862 int keyframe = 0;
2863
2864 if (flags & MOV_TRUN_SAMPLE_DURATION) sample_duration = avio_rb32(pb);
2865 if (flags & MOV_TRUN_SAMPLE_SIZE) sample_size = avio_rb32(pb);
2866 if (flags & MOV_TRUN_SAMPLE_FLAGS) sample_flags = avio_rb32(pb);
2867 sc->ctts_data[sc->ctts_count].count = 1;
2868 sc->ctts_data[sc->ctts_count].duration = (flags & MOV_TRUN_SAMPLE_CTS) ?
2869 avio_rb32(pb) : 0;
2870 mov_update_dts_shift(sc, sc->ctts_data[sc->ctts_count].duration);
2871 sc->ctts_count++;
2872 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
2873 keyframe = 1;
2874 else if (!found_keyframe)
2875 keyframe = found_keyframe =
2876 !(sample_flags & (MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC |
2877 MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES));
2878 if (keyframe)
2879 distance = 0;
2880 av_add_index_entry(st, offset, dts, sample_size, distance,
2881 keyframe ? AVINDEX_KEYFRAME : 0);
2882 av_dlog(c->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
2883 "size %d, distance %d, keyframe %d\n", st->index, sc->sample_count+i,
2884 offset, dts, sample_size, distance, keyframe);
2885 distance++;
2886 dts += sample_duration;
2887 offset += sample_size;
2888 sc->data_size += sample_size;
2889 sc->duration_for_fps += sample_duration;
2890 sc->nb_frames_for_fps ++;
2891 }
2892
2893 if (pb->eof_reached)
2894 return AVERROR_EOF;
2895
2896 frag->implicit_offset = offset;
2897 st->duration = sc->track_end = dts + sc->time_offset;
2898 return 0;
2899}
2900
2901/* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
2902/* like the files created with Adobe Premiere 5.0, for samples see */
2903/* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
2904static int mov_read_wide(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2905{
2906 int err;
2907
2908 if (atom.size < 8)
2909 return 0; /* continue */
2910 if (avio_rb32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
2911 avio_skip(pb, atom.size - 4);
2912 return 0;
2913 }
2914 atom.type = avio_rl32(pb);
2915 atom.size -= 8;
2916 if (atom.type != MKTAG('m','d','a','t')) {
2917 avio_skip(pb, atom.size);
2918 return 0;
2919 }
2920 err = mov_read_mdat(c, pb, atom);
2921 return err;
2922}
2923
2924static int mov_read_cmov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2925{
2926#if CONFIG_ZLIB
2927 AVIOContext ctx;
2928 uint8_t *cmov_data;
2929 uint8_t *moov_data; /* uncompressed data */
2930 long cmov_len, moov_len;
2931 int ret = -1;
2932
2933 avio_rb32(pb); /* dcom atom */
2934 if (avio_rl32(pb) != MKTAG('d','c','o','m'))
2935 return AVERROR_INVALIDDATA;
2936 if (avio_rl32(pb) != MKTAG('z','l','i','b')) {
2937 av_log(c->fc, AV_LOG_ERROR, "unknown compression for cmov atom !\n");
2938 return AVERROR_INVALIDDATA;
2939 }
2940 avio_rb32(pb); /* cmvd atom */
2941 if (avio_rl32(pb) != MKTAG('c','m','v','d'))
2942 return AVERROR_INVALIDDATA;
2943 moov_len = avio_rb32(pb); /* uncompressed size */
2944 cmov_len = atom.size - 6 * 4;
2945
2946 cmov_data = av_malloc(cmov_len);
2947 if (!cmov_data)
2948 return AVERROR(ENOMEM);
2949 moov_data = av_malloc(moov_len);
2950 if (!moov_data) {
2951 av_free(cmov_data);
2952 return AVERROR(ENOMEM);
2953 }
2954 avio_read(pb, cmov_data, cmov_len);
2955 if (uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
2956 goto free_and_return;
2957 if (ffio_init_context(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
2958 goto free_and_return;
2959 atom.type = MKTAG('m','o','o','v');
2960 atom.size = moov_len;
2961 ret = mov_read_default(c, &ctx, atom);
2962free_and_return:
2963 av_free(moov_data);
2964 av_free(cmov_data);
2965 return ret;
2966#else
2967 av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
2968 return AVERROR(ENOSYS);
2969#endif
2970}
2971
2972/* edit list atom */
2973static int mov_read_elst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2974{
2975 MOVStreamContext *sc;
2976 int i, edit_count, version, edit_start_index = 0;
2977 int unsupported = 0;
2978
2979 if (c->fc->nb_streams < 1 || c->ignore_editlist)
2980 return 0;
2981 sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
2982
2983 version = avio_r8(pb); /* version */
2984 avio_rb24(pb); /* flags */
2985 edit_count = avio_rb32(pb); /* entries */
2986
2987 if ((uint64_t)edit_count*12+8 > atom.size)
2988 return AVERROR_INVALIDDATA;
2989
2990 av_dlog(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, edit_count);
2991 for (i=0; i<edit_count; i++){
2992 int64_t time;
2993 int64_t duration;
2994 int rate;
2995 if (version == 1) {
2996 duration = avio_rb64(pb);
2997 time = avio_rb64(pb);
2998 } else {
2999 duration = avio_rb32(pb); /* segment duration */
3000 time = (int32_t)avio_rb32(pb); /* media time */
3001 }
3002 rate = avio_rb32(pb);
3003 if (i == 0 && time == -1) {
3004 sc->empty_duration = duration;
3005 edit_start_index = 1;
3006 } else if (i == edit_start_index && time >= 0)
3007 sc->start_time = time;
3008 else
3009 unsupported = 1;
3010
3011 av_dlog(c->fc, "duration=%"PRId64" time=%"PRId64" rate=%f\n",
3012 duration, time, rate / 65536.0);
3013 }
3014
3015 if (unsupported)
3016 av_log(c->fc, AV_LOG_WARNING, "multiple edit list entries, "
3017 "a/v desync might occur, patch welcome\n");
3018
3019 return 0;
3020}
3021
3022static int mov_read_tmcd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
3023{
3024 MOVStreamContext *sc;
3025
3026 if (c->fc->nb_streams < 1)
3027 return AVERROR_INVALIDDATA;
3028 sc = c->fc->streams[c->fc->nb_streams - 1]->priv_data;
3029 sc->timecode_track = avio_rb32(pb);
3030 return 0;
3031}
3032
3033static int mov_read_uuid(MOVContext *c, AVIOContext *pb, MOVAtom atom)
3034{
3035 int ret;
3036 uint8_t uuid[16];
3037 static const uint8_t uuid_isml_manifest[] = {
3038 0xa5, 0xd4, 0x0b, 0x30, 0xe8, 0x14, 0x11, 0xdd,
3039 0xba, 0x2f, 0x08, 0x00, 0x20, 0x0c, 0x9a, 0x66
3040 };
3041
3042 if (atom.size < sizeof(uuid) || atom.size == INT64_MAX)
3043 return AVERROR_INVALIDDATA;
3044
3045 ret = avio_read(pb, uuid, sizeof(uuid));
3046 if (ret < 0) {
3047 return ret;
3048 } else if (ret != sizeof(uuid)) {
3049 return AVERROR_INVALIDDATA;
3050 }
3051 if (!memcmp(uuid, uuid_isml_manifest, sizeof(uuid))) {
3052 uint8_t *buffer, *ptr;
3053 char *endptr;
3054 size_t len = atom.size - sizeof(uuid);
3055
3056 if (len < 4) {
3057 return AVERROR_INVALIDDATA;
3058 }
3059 ret = avio_skip(pb, 4); // zeroes
3060 len -= 4;
3061
3062 buffer = av_mallocz(len + 1);
3063 if (!buffer) {
3064 return AVERROR(ENOMEM);
3065 }
3066 ret = avio_read(pb, buffer, len);
3067 if (ret < 0) {
3068 av_free(buffer);
3069 return ret;
3070 } else if (ret != len) {
3071 av_free(buffer);
3072 return AVERROR_INVALIDDATA;
3073 }
3074
3075 ptr = buffer;
3076 while ((ptr = av_stristr(ptr, "systemBitrate=\""))) {
3077 ptr += sizeof("systemBitrate=\"") - 1;
3078 c->bitrates_count++;
3079 c->bitrates = av_realloc_f(c->bitrates, c->bitrates_count, sizeof(*c->bitrates));
3080 if (!c->bitrates) {
3081 c->bitrates_count = 0;
3082 av_free(buffer);
3083 return AVERROR(ENOMEM);
3084 }
3085 errno = 0;
3086 ret = strtol(ptr, &endptr, 10);
3087 if (ret < 0 || errno || *endptr != '"') {
3088 c->bitrates[c->bitrates_count - 1] = 0;
3089 } else {
3090 c->bitrates[c->bitrates_count - 1] = ret;
3091 }
3092 }
3093
3094 av_free(buffer);
3095 }
3096 return 0;
3097}
3098
3099static const MOVParseTableEntry mov_default_parse_table[] = {
3100{ MKTAG('A','C','L','R'), mov_read_avid },
3101{ MKTAG('A','P','R','G'), mov_read_avid },
3102{ MKTAG('A','A','L','P'), mov_read_avid },
3103{ MKTAG('A','R','E','S'), mov_read_ares },
3104{ MKTAG('a','v','s','s'), mov_read_avss },
3105{ MKTAG('c','h','p','l'), mov_read_chpl },
3106{ MKTAG('c','o','6','4'), mov_read_stco },
3107{ MKTAG('c','t','t','s'), mov_read_ctts }, /* composition time to sample */
3108{ MKTAG('d','i','n','f'), mov_read_default },
3109{ MKTAG('d','r','e','f'), mov_read_dref },
3110{ MKTAG('e','d','t','s'), mov_read_default },
3111{ MKTAG('e','l','s','t'), mov_read_elst },
3112{ MKTAG('e','n','d','a'), mov_read_enda },
3113{ MKTAG('f','i','e','l'), mov_read_fiel },
3114{ MKTAG('f','t','y','p'), mov_read_ftyp },
3115{ MKTAG('g','l','b','l'), mov_read_glbl },
3116{ MKTAG('h','d','l','r'), mov_read_hdlr },
3117{ MKTAG('i','l','s','t'), mov_read_ilst },
3118{ MKTAG('j','p','2','h'), mov_read_jp2h },
3119{ MKTAG('m','d','a','t'), mov_read_mdat },
3120{ MKTAG('m','d','h','d'), mov_read_mdhd },
3121{ MKTAG('m','d','i','a'), mov_read_default },
3122{ MKTAG('m','e','t','a'), mov_read_meta },
3123{ MKTAG('m','i','n','f'), mov_read_default },
3124{ MKTAG('m','o','o','f'), mov_read_moof },
3125{ MKTAG('m','o','o','v'), mov_read_moov },
3126{ MKTAG('m','v','e','x'), mov_read_default },
3127{ MKTAG('m','v','h','d'), mov_read_mvhd },
3128{ MKTAG('S','M','I',' '), mov_read_svq3 },
3129{ MKTAG('a','l','a','c'), mov_read_alac }, /* alac specific atom */
3130{ MKTAG('a','v','c','C'), mov_read_glbl },
3131{ MKTAG('p','a','s','p'), mov_read_pasp },
3132{ MKTAG('s','t','b','l'), mov_read_default },
3133{ MKTAG('s','t','c','o'), mov_read_stco },
3134{ MKTAG('s','t','p','s'), mov_read_stps },
3135{ MKTAG('s','t','r','f'), mov_read_strf },
3136{ MKTAG('s','t','s','c'), mov_read_stsc },
3137{ MKTAG('s','t','s','d'), mov_read_stsd }, /* sample description */
3138{ MKTAG('s','t','s','s'), mov_read_stss }, /* sync sample */
3139{ MKTAG('s','t','s','z'), mov_read_stsz }, /* sample size */
3140{ MKTAG('s','t','t','s'), mov_read_stts },
3141{ MKTAG('s','t','z','2'), mov_read_stsz }, /* compact sample size */
3142{ MKTAG('t','k','h','d'), mov_read_tkhd }, /* track header */
3143{ MKTAG('t','f','h','d'), mov_read_tfhd }, /* track fragment header */
3144{ MKTAG('t','r','a','k'), mov_read_trak },
3145{ MKTAG('t','r','a','f'), mov_read_default },
3146{ MKTAG('t','r','e','f'), mov_read_default },
3147{ MKTAG('t','m','c','d'), mov_read_tmcd },
3148{ MKTAG('c','h','a','p'), mov_read_chap },
3149{ MKTAG('t','r','e','x'), mov_read_trex },
3150{ MKTAG('t','r','u','n'), mov_read_trun },
3151{ MKTAG('u','d','t','a'), mov_read_default },
3152{ MKTAG('w','a','v','e'), mov_read_wave },
3153{ MKTAG('e','s','d','s'), mov_read_esds },
3154{ MKTAG('d','a','c','3'), mov_read_dac3 }, /* AC-3 info */
3155{ MKTAG('d','e','c','3'), mov_read_dec3 }, /* EAC-3 info */
3156{ MKTAG('w','i','d','e'), mov_read_wide }, /* place holder */
3157{ MKTAG('w','f','e','x'), mov_read_wfex },
3158{ MKTAG('c','m','o','v'), mov_read_cmov },
3159{ MKTAG('c','h','a','n'), mov_read_chan }, /* channel layout */
3160{ MKTAG('d','v','c','1'), mov_read_dvc1 },
3161{ MKTAG('s','b','g','p'), mov_read_sbgp },
3162{ MKTAG('h','v','c','C'), mov_read_glbl },
3163{ MKTAG('u','u','i','d'), mov_read_uuid },
3164{ MKTAG('C','i','n', 0x8e), mov_read_targa_y216 },
3165{ MKTAG('-','-','-','-'), mov_read_custom },
3166{ 0, NULL }
3167};
3168
3169static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom)
3170{
3171 int64_t total_size = 0;
3172 MOVAtom a;
3173 int i;
3174
3175 if (atom.size < 0)
3176 atom.size = INT64_MAX;
3177 while (total_size + 8 <= atom.size && !avio_feof(pb)) {
3178 int (*parse)(MOVContext*, AVIOContext*, MOVAtom) = NULL;
3179 a.size = atom.size;
3180 a.type=0;
3181 if (atom.size >= 8) {
3182 a.size = avio_rb32(pb);
3183 a.type = avio_rl32(pb);
3184 if (a.type == MKTAG('f','r','e','e') &&
3185 a.size >= 8 &&
3186 c->moov_retry) {
3187 uint8_t buf[8];
3188 uint32_t *type = (uint32_t *)buf + 1;
3189 avio_read(pb, buf, 8);
3190 avio_seek(pb, -8, SEEK_CUR);
3191 if (*type == MKTAG('m','v','h','d') ||
3192 *type == MKTAG('c','m','o','v')) {
3193 av_log(c->fc, AV_LOG_ERROR, "Detected moov in a free atom.\n");
3194 a.type = MKTAG('m','o','o','v');
3195 }
3196 }
3197 if (atom.type != MKTAG('r','o','o','t') &&
3198 atom.type != MKTAG('m','o','o','v'))
3199 {
3200 if (a.type == MKTAG('t','r','a','k') || a.type == MKTAG('m','d','a','t'))
3201 {
3202 av_log(c->fc, AV_LOG_ERROR, "Broken file, trak/mdat not at top-level\n");
3203 avio_skip(pb, -8);
3204 return 0;
3205 }
3206 }
3207 total_size += 8;
3208 if (a.size == 1) { /* 64 bit extended size */
3209 a.size = avio_rb64(pb) - 8;
3210 total_size += 8;
3211 }
3212 }
3213 av_dlog(c->fc, "type: %08x '%.4s' parent:'%.4s' sz: %"PRId64" %"PRId64" %"PRId64"\n",
3214 a.type, (char*)&a.type, (char*)&atom.type, a.size, total_size, atom.size);
3215 if (a.size == 0) {
3216 a.size = atom.size - total_size + 8;
3217 }
3218 a.size -= 8;
3219 if (a.size < 0)
3220 break;
3221 a.size = FFMIN(a.size, atom.size - total_size);
3222
3223 for (i = 0; mov_default_parse_table[i].type; i++)
3224 if (mov_default_parse_table[i].type == a.type) {
3225 parse = mov_default_parse_table[i].parse;
3226 break;
3227 }
3228
3229 // container is user data
3230 if (!parse && (atom.type == MKTAG('u','d','t','a') ||
3231 atom.type == MKTAG('i','l','s','t')))
3232 parse = mov_read_udta_string;
3233
3234 if (!parse) { /* skip leaf atoms data */
3235 avio_skip(pb, a.size);
3236 } else {
3237 int64_t start_pos = avio_tell(pb);
3238 int64_t left;
3239 int err = parse(c, pb, a);
3240 if (err < 0)
3241 return err;
3242 if (c->found_moov && c->found_mdat &&
3243 ((!pb->seekable || c->fc->flags & AVFMT_FLAG_IGNIDX) ||
3244 start_pos + a.size == avio_size(pb))) {
3245 if (!pb->seekable || c->fc->flags & AVFMT_FLAG_IGNIDX)
3246 c->next_root_atom = start_pos + a.size;
3247 return 0;
3248 }
3249 left = a.size - avio_tell(pb) + start_pos;
3250 if (left > 0) /* skip garbage at atom end */
3251 avio_skip(pb, left);
3252 else if (left < 0) {
3253 av_log(c->fc, AV_LOG_WARNING,
3254 "overread end of atom '%.4s' by %"PRId64" bytes\n",
3255 (char*)&a.type, -left);
3256 avio_seek(pb, left, SEEK_CUR);
3257 }
3258 }
3259
3260 total_size += a.size;
3261 }
3262
3263 if (total_size < atom.size && atom.size < 0x7ffff)
3264 avio_skip(pb, atom.size - total_size);
3265
3266 return 0;
3267}
3268
3269static int mov_probe(AVProbeData *p)
3270{
3271 int64_t offset;
3272 uint32_t tag;
3273 int score = 0;
3274 int moov_offset = -1;
3275
3276 /* check file header */
3277 offset = 0;
3278 for (;;) {
3279 /* ignore invalid offset */
3280 if ((offset + 8) > (unsigned int)p->buf_size)
3281 break;
3282 tag = AV_RL32(p->buf + offset + 4);
3283 switch(tag) {
3284 /* check for obvious tags */
3285 case MKTAG('m','o','o','v'):
3286 moov_offset = offset + 4;
3287 case MKTAG('m','d','a','t'):
3288 case MKTAG('p','n','o','t'): /* detect movs with preview pics like ew.mov and april.mov */
3289 case MKTAG('u','d','t','a'): /* Packet Video PVAuthor adds this and a lot of more junk */
3290 case MKTAG('f','t','y','p'):
3291 if (AV_RB32(p->buf+offset) < 8 &&
3292 (AV_RB32(p->buf+offset) != 1 ||
3293 offset + 12 > (unsigned int)p->buf_size ||
3294 AV_RB64(p->buf+offset + 8) == 0)) {
3295 score = FFMAX(score, AVPROBE_SCORE_EXTENSION);
3296 } else if (tag == MKTAG('f','t','y','p') &&
3297 AV_RL32(p->buf + offset + 8) == MKTAG('j','p','2',' ')) {
3298 score = FFMAX(score, 5);
3299 } else {
3300 score = AVPROBE_SCORE_MAX;
3301 }
3302 offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset;
3303 break;
3304 /* those are more common words, so rate then a bit less */
3305 case MKTAG('e','d','i','w'): /* xdcam files have reverted first tags */
3306 case MKTAG('w','i','d','e'):
3307 case MKTAG('f','r','e','e'):
3308 case MKTAG('j','u','n','k'):
3309 case MKTAG('p','i','c','t'):
3310 score = FFMAX(score, AVPROBE_SCORE_MAX - 5);
3311 offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset;
3312 break;
3313 case MKTAG(0x82,0x82,0x7f,0x7d):
3314 case MKTAG('s','k','i','p'):
3315 case MKTAG('u','u','i','d'):
3316 case MKTAG('p','r','f','l'):
3317 /* if we only find those cause probedata is too small at least rate them */
3318 score = FFMAX(score, AVPROBE_SCORE_EXTENSION);
3319 offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset;
3320 break;
3321 default:
3322 offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset;
3323 }
3324 }
3325 if(score > AVPROBE_SCORE_MAX - 50 && moov_offset != -1) {
3326 /* moov atom in the header - we should make sure that this is not a
3327 * MOV-packed MPEG-PS */
3328 offset = moov_offset;
3329
3330 while(offset < (p->buf_size - 16)){ /* Sufficient space */
3331 /* We found an actual hdlr atom */
3332 if(AV_RL32(p->buf + offset ) == MKTAG('h','d','l','r') &&
3333 AV_RL32(p->buf + offset + 8) == MKTAG('m','h','l','r') &&
3334 AV_RL32(p->buf + offset + 12) == MKTAG('M','P','E','G')){
3335 av_log(NULL, AV_LOG_WARNING, "Found media data tag MPEG indicating this is a MOV-packed MPEG-PS.\n");
3336 /* We found a media handler reference atom describing an
3337 * MPEG-PS-in-MOV, return a
3338 * low score to force expanding the probe window until
3339 * mpegps_probe finds what it needs */
3340 return 5;
3341 }else
3342 /* Keep looking */
3343 offset+=2;
3344 }
3345 }
3346
3347 return score;
3348}
3349
3350// must be done after parsing all trak because there's no order requirement
3351static void mov_read_chapters(AVFormatContext *s)
3352{
3353 MOVContext *mov = s->priv_data;
3354 AVStream *st = NULL;
3355 MOVStreamContext *sc;
3356 int64_t cur_pos;
3357 int i;
3358
3359 for (i = 0; i < s->nb_streams; i++)
3360 if (s->streams[i]->id == mov->chapter_track) {
3361 st = s->streams[i];
3362 break;
3363 }
3364 if (!st) {
3365 av_log(s, AV_LOG_ERROR, "Referenced QT chapter track not found\n");
3366 return;
3367 }
3368
3369 st->discard = AVDISCARD_ALL;
3370 sc = st->priv_data;
3371 cur_pos = avio_tell(sc->pb);
3372
3373 for (i = 0; i < st->nb_index_entries; i++) {
3374 AVIndexEntry *sample = &st->index_entries[i];
3375 int64_t end = i+1 < st->nb_index_entries ? st->index_entries[i+1].timestamp : st->duration;
3376 uint8_t *title;
3377 uint16_t ch;
3378 int len, title_len;
3379
3380 if (end < sample->timestamp) {
3381 av_log(s, AV_LOG_WARNING, "ignoring stream duration which is shorter than chapters\n");
3382 end = AV_NOPTS_VALUE;
3383 }
3384
3385 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
3386 av_log(s, AV_LOG_ERROR, "Chapter %d not found in file\n", i);
3387 goto finish;
3388 }
3389
3390 // the first two bytes are the length of the title
3391 len = avio_rb16(sc->pb);
3392 if (len > sample->size-2)
3393 continue;
3394 title_len = 2*len + 1;
3395 if (!(title = av_mallocz(title_len)))
3396 goto finish;
3397
3398 // The samples could theoretically be in any encoding if there's an encd
3399 // atom following, but in practice are only utf-8 or utf-16, distinguished
3400 // instead by the presence of a BOM
3401 if (!len) {
3402 title[0] = 0;
3403 } else {
3404 ch = avio_rb16(sc->pb);
3405 if (ch == 0xfeff)
3406 avio_get_str16be(sc->pb, len, title, title_len);
3407 else if (ch == 0xfffe)
3408 avio_get_str16le(sc->pb, len, title, title_len);
3409 else {
3410 AV_WB16(title, ch);
3411 if (len == 1 || len == 2)
3412 title[len] = 0;
3413 else
3414 avio_get_str(sc->pb, INT_MAX, title + 2, len - 1);
3415 }
3416 }
3417
3418 avpriv_new_chapter(s, i, st->time_base, sample->timestamp, end, title);
3419 av_freep(&title);
3420 }
3421finish:
3422 avio_seek(sc->pb, cur_pos, SEEK_SET);
3423}
3424
3425static int parse_timecode_in_framenum_format(AVFormatContext *s, AVStream *st,
3426 uint32_t value, int flags)
3427{
3428 AVTimecode tc;
3429 char buf[AV_TIMECODE_STR_SIZE];
3430 AVRational rate = {st->codec->time_base.den,
3431 st->codec->time_base.num};
3432 int ret = av_timecode_init(&tc, rate, flags, 0, s);
3433 if (ret < 0)
3434 return ret;
3435 av_dict_set(&st->metadata, "timecode",
3436 av_timecode_make_string(&tc, buf, value), 0);
3437 return 0;
3438}
3439
3440static int mov_read_timecode_track(AVFormatContext *s, AVStream *st)
3441{
3442 MOVStreamContext *sc = st->priv_data;
3443 int flags = 0;
3444 int64_t cur_pos = avio_tell(sc->pb);
3445 uint32_t value;
3446
3447 if (!st->nb_index_entries)
3448 return -1;
3449
3450 avio_seek(sc->pb, st->index_entries->pos, SEEK_SET);
3451 value = avio_rb32(s->pb);
3452
3453 if (sc->tmcd_flags & 0x0001) flags |= AV_TIMECODE_FLAG_DROPFRAME;
3454 if (sc->tmcd_flags & 0x0002) flags |= AV_TIMECODE_FLAG_24HOURSMAX;
3455 if (sc->tmcd_flags & 0x0004) flags |= AV_TIMECODE_FLAG_ALLOWNEGATIVE;
3456
3457 /* Assume Counter flag is set to 1 in tmcd track (even though it is likely
3458 * not the case) and thus assume "frame number format" instead of QT one.
3459 * No sample with tmcd track can be found with a QT timecode at the moment,
3460 * despite what the tmcd track "suggests" (Counter flag set to 0 means QT
3461 * format). */
3462 parse_timecode_in_framenum_format(s, st, value, flags);
3463
3464 avio_seek(sc->pb, cur_pos, SEEK_SET);
3465 return 0;
3466}
3467
3468static int mov_read_close(AVFormatContext *s)
3469{
3470 MOVContext *mov = s->priv_data;
3471 int i, j;
3472
3473 for (i = 0; i < s->nb_streams; i++) {
3474 AVStream *st = s->streams[i];
3475 MOVStreamContext *sc = st->priv_data;
3476
3477 av_freep(&sc->ctts_data);
3478 for (j = 0; j < sc->drefs_count; j++) {
3479 av_freep(&sc->drefs[j].path);
3480 av_freep(&sc->drefs[j].dir);
3481 }
3482 av_freep(&sc->drefs);
3483
3484 sc->drefs_count = 0;
3485
3486 if (!sc->pb_is_copied)
3487 avio_close(sc->pb);
3488
3489 sc->pb = NULL;
3490 av_freep(&sc->chunk_offsets);
3491 av_freep(&sc->stsc_data);
3492 av_freep(&sc->sample_sizes);
3493 av_freep(&sc->keyframes);
3494 av_freep(&sc->stts_data);
3495 av_freep(&sc->stps_data);
3496 av_freep(&sc->rap_group);
3497 av_freep(&sc->display_matrix);
3498 }
3499
3500 if (mov->dv_demux) {
3501 avformat_free_context(mov->dv_fctx);
3502 mov->dv_fctx = NULL;
3503 }
3504
3505 av_freep(&mov->trex_data);
3506 av_freep(&mov->bitrates);
3507
3508 return 0;
3509}
3510
3511static int tmcd_is_referenced(AVFormatContext *s, int tmcd_id)
3512{
3513 int i;
3514
3515 for (i = 0; i < s->nb_streams; i++) {
3516 AVStream *st = s->streams[i];
3517 MOVStreamContext *sc = st->priv_data;
3518
3519 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
3520 sc->timecode_track == tmcd_id)
3521 return 1;
3522 }
3523 return 0;
3524}
3525
3526/* look for a tmcd track not referenced by any video track, and export it globally */
3527static void export_orphan_timecode(AVFormatContext *s)
3528{
3529 int i;
3530
3531 for (i = 0; i < s->nb_streams; i++) {
3532 AVStream *st = s->streams[i];
3533
3534 if (st->codec->codec_tag == MKTAG('t','m','c','d') &&
3535 !tmcd_is_referenced(s, i + 1)) {
3536 AVDictionaryEntry *tcr = av_dict_get(st->metadata, "timecode", NULL, 0);
3537 if (tcr) {
3538 av_dict_set(&s->metadata, "timecode", tcr->value, 0);
3539 break;
3540 }
3541 }
3542 }
3543}
3544
3545static int mov_read_header(AVFormatContext *s)
3546{
3547 MOVContext *mov = s->priv_data;
3548 AVIOContext *pb = s->pb;
3549 int j, err;
3550 MOVAtom atom = { AV_RL32("root") };
3551 int i;
3552
3553 mov->fc = s;
3554 /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
3555 if (pb->seekable)
3556 atom.size = avio_size(pb);
3557 else
3558 atom.size = INT64_MAX;
3559
3560 /* check MOV header */
3561 do {
3562 if (mov->moov_retry)
3563 avio_seek(pb, 0, SEEK_SET);
3564 if ((err = mov_read_default(mov, pb, atom)) < 0) {
3565 av_log(s, AV_LOG_ERROR, "error reading header\n");
3566 mov_read_close(s);
3567 return err;
3568 }
3569 } while (pb->seekable && !mov->found_moov && !mov->moov_retry++);
3570 if (!mov->found_moov) {
3571 av_log(s, AV_LOG_ERROR, "moov atom not found\n");
3572 mov_read_close(s);
3573 return AVERROR_INVALIDDATA;
3574 }
3575 av_dlog(mov->fc, "on_parse_exit_offset=%"PRId64"\n", avio_tell(pb));
3576
3577 if (pb->seekable) {
3578 if (mov->chapter_track > 0)
3579 mov_read_chapters(s);
3580 for (i = 0; i < s->nb_streams; i++)
3581 if (s->streams[i]->codec->codec_tag == AV_RL32("tmcd"))
3582 mov_read_timecode_track(s, s->streams[i]);
3583 }
3584
3585 /* copy timecode metadata from tmcd tracks to the related video streams */
3586 for (i = 0; i < s->nb_streams; i++) {
3587 AVStream *st = s->streams[i];
3588 MOVStreamContext *sc = st->priv_data;
3589 if (sc->timecode_track > 0) {
3590 AVDictionaryEntry *tcr;
3591 int tmcd_st_id = -1;
3592
3593 for (j = 0; j < s->nb_streams; j++)
3594 if (s->streams[j]->id == sc->timecode_track)
3595 tmcd_st_id = j;
3596
3597 if (tmcd_st_id < 0 || tmcd_st_id == i)
3598 continue;
3599 tcr = av_dict_get(s->streams[tmcd_st_id]->metadata, "timecode", NULL, 0);
3600 if (tcr)
3601 av_dict_set(&st->metadata, "timecode", tcr->value, 0);
3602 }
3603 }
3604 export_orphan_timecode(s);
3605
3606 for (i = 0; i < s->nb_streams; i++) {
3607 AVStream *st = s->streams[i];
3608 MOVStreamContext *sc = st->priv_data;
3609 fix_timescale(mov, sc);
3610 if(st->codec->codec_type == AVMEDIA_TYPE_AUDIO && st->codec->codec_id == AV_CODEC_ID_AAC) {
3611 st->skip_samples = sc->start_pad;
3612 }
3613 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && sc->nb_frames_for_fps > 0 && sc->duration_for_fps > 0)
3614 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
3615 sc->time_scale*(int64_t)sc->nb_frames_for_fps, sc->duration_for_fps, INT_MAX);
3616 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3617 if (st->codec->width <= 0 && st->codec->height <= 0) {
3618 st->codec->width = sc->width;
3619 st->codec->height = sc->height;
3620 }
3621 if (st->codec->codec_id == AV_CODEC_ID_DVD_SUBTITLE) {
3622 if ((err = mov_rewrite_dvd_sub_extradata(st)) < 0)
3623 return err;
3624 }
3625 }
3626 }
3627
3628 if (mov->trex_data) {
3629 for (i = 0; i < s->nb_streams; i++) {
3630 AVStream *st = s->streams[i];
3631 MOVStreamContext *sc = st->priv_data;
3632 if (st->duration > 0)
3633 st->codec->bit_rate = sc->data_size * 8 * sc->time_scale / st->duration;
3634 }
3635 }
3636
3637 for (i = 0; i < mov->bitrates_count && i < s->nb_streams; i++) {
3638 if (mov->bitrates[i]) {
3639 s->streams[i]->codec->bit_rate = mov->bitrates[i];
3640 }
3641 }
3642
3643 ff_rfps_calculate(s);
3644
3645 for (i = 0; i < s->nb_streams; i++) {
3646 AVStream *st = s->streams[i];
3647 MOVStreamContext *sc = st->priv_data;
3648
3649 switch (st->codec->codec_type) {
3650 case AVMEDIA_TYPE_AUDIO:
3651 err = ff_replaygain_export(st, s->metadata);
3652 if (err < 0) {
3653 mov_read_close(s);
3654 return err;
3655 }
3656 break;
3657 case AVMEDIA_TYPE_VIDEO:
3658 if (sc->display_matrix) {
3659 AVPacketSideData *sd, *tmp;
3660
3661 tmp = av_realloc_array(st->side_data,
3662 st->nb_side_data + 1, sizeof(*tmp));
3663 if (!tmp)
3664 return AVERROR(ENOMEM);
3665
3666 st->side_data = tmp;
3667 st->nb_side_data++;
3668
3669 sd = &st->side_data[st->nb_side_data - 1];
3670 sd->type = AV_PKT_DATA_DISPLAYMATRIX;
3671 sd->size = sizeof(int32_t) * 9;
3672 sd->data = (uint8_t*)sc->display_matrix;
3673 sc->display_matrix = NULL;
3674 }
3675 break;
3676 }
3677 }
3678
3679 return 0;
3680}
3681
3682static AVIndexEntry *mov_find_next_sample(AVFormatContext *s, AVStream **st)
3683{
3684 AVIndexEntry *sample = NULL;
3685 int64_t best_dts = INT64_MAX;
3686 int i;
3687 for (i = 0; i < s->nb_streams; i++) {
3688 AVStream *avst = s->streams[i];
3689 MOVStreamContext *msc = avst->priv_data;
3690 if (msc->pb && msc->current_sample < avst->nb_index_entries) {
3691 AVIndexEntry *current_sample = &avst->index_entries[msc->current_sample];
3692 int64_t dts = av_rescale(current_sample->timestamp, AV_TIME_BASE, msc->time_scale);
3693 av_dlog(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
3694 if (!sample || (!s->pb->seekable && current_sample->pos < sample->pos) ||
3695 (s->pb->seekable &&
3696 ((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb &&
3697 ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
3698 (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) {
3699 sample = current_sample;
3700 best_dts = dts;
3701 *st = avst;
3702 }
3703 }
3704 }
3705 return sample;
3706}
3707
3708static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
3709{
3710 MOVContext *mov = s->priv_data;
3711 MOVStreamContext *sc;
3712 AVIndexEntry *sample;
3713 AVStream *st = NULL;
3714 int ret;
3715 mov->fc = s;
3716 retry:
3717 sample = mov_find_next_sample(s, &st);
3718 if (!sample) {
3719 mov->found_mdat = 0;
3720 if (!mov->next_root_atom)
3721 return AVERROR_EOF;
3722 avio_seek(s->pb, mov->next_root_atom, SEEK_SET);
3723 mov->next_root_atom = 0;
3724 if (mov_read_default(mov, s->pb, (MOVAtom){ AV_RL32("root"), INT64_MAX }) < 0 ||
3725 avio_feof(s->pb))
3726 return AVERROR_EOF;
3727 av_dlog(s, "read fragments, offset 0x%"PRIx64"\n", avio_tell(s->pb));
3728 goto retry;
3729 }
3730 sc = st->priv_data;
3731 /* must be done just before reading, to avoid infinite loop on sample */
3732 sc->current_sample++;
3733
3734 if (mov->next_root_atom) {
3735 sample->pos = FFMIN(sample->pos, mov->next_root_atom);
3736 sample->size = FFMIN(sample->size, (mov->next_root_atom - sample->pos));
3737 }
3738
3739 if (st->discard != AVDISCARD_ALL) {
3740 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
3741 av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
3742 sc->ffindex, sample->pos);
3743 return AVERROR_INVALIDDATA;
3744 }
3745 ret = av_get_packet(sc->pb, pkt, sample->size);
3746 if (ret < 0)
3747 return ret;
3748 if (sc->has_palette) {
3749 uint8_t *pal;
3750
3751 pal = av_packet_new_side_data(pkt, AV_PKT_DATA_PALETTE, AVPALETTE_SIZE);
3752 if (!pal) {
3753 av_log(mov->fc, AV_LOG_ERROR, "Cannot append palette to packet\n");
3754 } else {
3755 memcpy(pal, sc->palette, AVPALETTE_SIZE);
3756 sc->has_palette = 0;
3757 }
3758 }
3759#if CONFIG_DV_DEMUXER
3760 if (mov->dv_demux && sc->dv_audio_container) {
3761 avpriv_dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size, pkt->pos);
3762 av_free(pkt->data);
3763 pkt->size = 0;
3764 ret = avpriv_dv_get_packet(mov->dv_demux, pkt);
3765 if (ret < 0)
3766 return ret;
3767 }
3768#endif
3769 }
3770
3771 pkt->stream_index = sc->ffindex;
3772 pkt->dts = sample->timestamp;
3773 if (sc->ctts_data && sc->ctts_index < sc->ctts_count) {
3774 pkt->pts = pkt->dts + sc->dts_shift + sc->ctts_data[sc->ctts_index].duration;
3775 /* update ctts context */
3776 sc->ctts_sample++;
3777 if (sc->ctts_index < sc->ctts_count &&
3778 sc->ctts_data[sc->ctts_index].count == sc->ctts_sample) {
3779 sc->ctts_index++;
3780 sc->ctts_sample = 0;
3781 }
3782 if (sc->wrong_dts)
3783 pkt->dts = AV_NOPTS_VALUE;
3784 } else {
3785 int64_t next_dts = (sc->current_sample < st->nb_index_entries) ?
3786 st->index_entries[sc->current_sample].timestamp : st->duration;
3787 pkt->duration = next_dts - pkt->dts;
3788 pkt->pts = pkt->dts;
3789 }
3790 if (st->discard == AVDISCARD_ALL)
3791 goto retry;
3792 pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? AV_PKT_FLAG_KEY : 0;
3793 pkt->pos = sample->pos;
3794 av_dlog(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n",
3795 pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
3796 return 0;
3797}
3798
3799static int mov_seek_stream(AVFormatContext *s, AVStream *st, int64_t timestamp, int flags)
3800{
3801 MOVStreamContext *sc = st->priv_data;
3802 int sample, time_sample;
3803 int i;
3804
3805 sample = av_index_search_timestamp(st, timestamp, flags);
3806 av_dlog(s, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
3807 if (sample < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
3808 sample = 0;
3809 if (sample < 0) /* not sure what to do */
3810 return AVERROR_INVALIDDATA;
3811 sc->current_sample = sample;
3812 av_dlog(s, "stream %d, found sample %d\n", st->index, sc->current_sample);
3813 /* adjust ctts index */
3814 if (sc->ctts_data) {
3815 time_sample = 0;
3816 for (i = 0; i < sc->ctts_count; i++) {
3817 int next = time_sample + sc->ctts_data[i].count;
3818 if (next > sc->current_sample) {
3819 sc->ctts_index = i;
3820 sc->ctts_sample = sc->current_sample - time_sample;
3821 break;
3822 }
3823 time_sample = next;
3824 }
3825 }
3826 return sample;
3827}
3828
3829static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
3830{
3831 AVStream *st;
3832 int64_t seek_timestamp, timestamp;
3833 int sample;
3834 int i;
3835
3836 if (stream_index >= s->nb_streams)
3837 return AVERROR_INVALIDDATA;
3838
3839 st = s->streams[stream_index];
3840 sample = mov_seek_stream(s, st, sample_time, flags);
3841 if (sample < 0)
3842 return sample;
3843
3844 /* adjust seek timestamp to found sample timestamp */
3845 seek_timestamp = st->index_entries[sample].timestamp;
3846
3847 for (i = 0; i < s->nb_streams; i++) {
3848 MOVStreamContext *sc = s->streams[i]->priv_data;
3849 st = s->streams[i];
3850 st->skip_samples = (sample_time <= 0) ? sc->start_pad : 0;
3851
3852 if (stream_index == i)
3853 continue;
3854
3855 timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
3856 mov_seek_stream(s, st, timestamp, flags);
3857 }
3858 return 0;
3859}
3860
3861static const AVOption options[] = {
3862 {"use_absolute_path",
3863 "allow using absolute path when opening alias, this is a possible security issue",
3864 offsetof(MOVContext, use_absolute_path), FF_OPT_TYPE_INT, {.i64 = 0},
3865 0, 1, AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_DECODING_PARAM},
3866 {"ignore_editlist", "", offsetof(MOVContext, ignore_editlist), FF_OPT_TYPE_INT, {.i64 = 0},
3867 0, 1, AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_DECODING_PARAM},
3868 {NULL}
3869};
3870
3871static const AVClass mov_class = {
3872 .class_name = "mov,mp4,m4a,3gp,3g2,mj2",
3873 .item_name = av_default_item_name,
3874 .option = options,
3875 .version = LIBAVUTIL_VERSION_INT,
3876};
3877
3878AVInputFormat ff_mov_demuxer = {
3879 .name = "mov,mp4,m4a,3gp,3g2,mj2",
3880 .long_name = NULL_IF_CONFIG_SMALL("QuickTime / MOV"),
3881 .priv_data_size = sizeof(MOVContext),
3882 .extensions = "mov,mp4,m4a,3gp,3g2,mj2",
3883 .read_probe = mov_probe,
3884 .read_header = mov_read_header,
3885 .read_packet = mov_read_packet,
3886 .read_close = mov_read_close,
3887 .read_seek = mov_read_seek,
3888 .priv_class = &mov_class,
3889 .flags = AVFMT_NO_BYTE_SEEK,
3890};
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