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Imported Debian version 2.5.3~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
2ba45a60
DM		 30#include "libavutil/attributes.h"
31#include "libavutil/channel_layout.h"
32#include "libavutil/display.h"
33#include "libavutil/intreadwrite.h"
34#include "libavutil/intfloat.h"
35#include "libavutil/mathematics.h"
f6fa7814 36#include "libavutil/time_internal.h"
2ba45a60
DM		 37#include "libavutil/avstring.h"
38#include "libavutil/dict.h"
39#include "libavutil/opt.h"
40#include "libavutil/timecode.h"
41#include "libavcodec/ac3tab.h"
42#include "avformat.h"
43#include "internal.h"
44#include "avio_internal.h"
45#include "riff.h"
46#include "isom.h"
47#include "libavcodec/get_bits.h"
48#include "id3v1.h"
49#include "mov_chan.h"
50#include "replaygain.h"
51
52#if CONFIG_ZLIB
53#include <zlib.h>
54#endif
55
56#include "qtpalette.h"
57
58
59#undef NDEBUG
60#include <assert.h>
61
62/* those functions parse an atom */
63/* links atom IDs to parse functions */
64typedef struct MOVParseTableEntry {
65 uint32_t type;
66 int (*parse)(MOVContext *ctx, AVIOContext *pb, MOVAtom atom);
67} MOVParseTableEntry;
68
69static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom);
f6fa7814 70static int mov_read_mfra(MOVContext *c, AVIOContext *f);
2ba45a60
DM		 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{
0e279ba6
DM		 213 char *value;
214 // Check for overflow.
215 if (len >= INT_MAX)
216 return AVERROR(EINVAL);
217 value = av_malloc(len + 1);
2ba45a60
DM		 218 if (!value)
219 return AVERROR(ENOMEM);
220 avio_read(pb, value, len);
221 value[len] = 0;
222 return av_dict_set(&c->fc->metadata, key, value, AV_DICT_DONT_STRDUP_VAL);
223}
224
225static int mov_metadata_loci(MOVContext *c, AVIOContext *pb, unsigned len)
226{
227 char language[4] = { 0 };
228 char buf[100];
229 uint16_t langcode = 0;
230 double longitude, latitude;
231 const char *key = "location";
232
233 if (len < 4 + 2 + 1 + 1 + 4 + 4 + 4)
234 return AVERROR_INVALIDDATA;
235
236 avio_skip(pb, 4); // version+flags
237 langcode = avio_rb16(pb);
238 ff_mov_lang_to_iso639(langcode, language);
239 len -= 6;
240
241 len -= avio_get_str(pb, len, buf, sizeof(buf)); // place name
242 if (len < 1)
243 return AVERROR_INVALIDDATA;
244 avio_skip(pb, 1); // role
245 len -= 1;
246
247 if (len < 14)
248 return AVERROR_INVALIDDATA;
249 longitude = ((int32_t) avio_rb32(pb)) / (float) (1 << 16);
250 latitude = ((int32_t) avio_rb32(pb)) / (float) (1 << 16);
251
252 // Try to output in the same format as the ?xyz field
253 snprintf(buf, sizeof(buf), "%+08.4f%+09.4f/", latitude, longitude);
254 if (*language && strcmp(language, "und")) {
255 char key2[16];
256 snprintf(key2, sizeof(key2), "%s-%s", key, language);
257 av_dict_set(&c->fc->metadata, key2, buf, 0);
258 }
259 c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
260 return av_dict_set(&c->fc->metadata, key, buf, 0);
261}
262
263static int mov_read_udta_string(MOVContext *c, AVIOContext *pb, MOVAtom atom)
264{
2ba45a60 265 char tmp_key[5];
f6fa7814
DM		 266 char key2[32], language[4] = {0};
267 char *str = NULL;
2ba45a60
DM		 268 const char *key = NULL;
269 uint16_t langcode = 0;
f6fa7814 270 uint32_t data_type = 0, str_size, str_size_alloc;
2ba45a60
DM		 271 int (*parse)(MOVContext*, AVIOContext*, unsigned, const char*) = NULL;
272
273 switch (atom.type) {
274 case MKTAG(0xa9,'n','a','m'): key = "title"; break;
275 case MKTAG(0xa9,'a','u','t'):
276 case MKTAG(0xa9,'A','R','T'): key = "artist"; break;
277 case MKTAG( 'a','A','R','T'): key = "album_artist"; break;
278 case MKTAG(0xa9,'w','r','t'): key = "composer"; break;
279 case MKTAG( 'c','p','i','l'): key = "compilation";
280 parse = mov_metadata_int8_no_padding; break;
281 case MKTAG( 'c','p','r','t'):
282 case MKTAG(0xa9,'c','p','y'): key = "copyright"; break;
283 case MKTAG(0xa9,'g','r','p'): key = "grouping"; break;
284 case MKTAG(0xa9,'l','y','r'): key = "lyrics"; break;
285 case MKTAG(0xa9,'c','m','t'):
286 case MKTAG(0xa9,'i','n','f'): key = "comment"; break;
287 case MKTAG(0xa9,'a','l','b'): key = "album"; break;
288 case MKTAG(0xa9,'d','a','y'): key = "date"; break;
289 case MKTAG(0xa9,'g','e','n'): key = "genre"; break;
290 case MKTAG( 'g','n','r','e'): key = "genre";
291 parse = mov_metadata_gnre; break;
292 case MKTAG(0xa9,'t','o','o'):
293 case MKTAG(0xa9,'s','w','r'): key = "encoder"; break;
294 case MKTAG(0xa9,'e','n','c'): key = "encoder"; break;
295 case MKTAG(0xa9,'m','a','k'): key = "make"; break;
296 case MKTAG(0xa9,'m','o','d'): key = "model"; break;
297 case MKTAG(0xa9,'x','y','z'): key = "location"; break;
298 case MKTAG( 'd','e','s','c'): key = "description";break;
299 case MKTAG( 'l','d','e','s'): key = "synopsis"; break;
300 case MKTAG( 't','v','s','h'): key = "show"; break;
301 case MKTAG( 't','v','e','n'): key = "episode_id";break;
302 case MKTAG( 't','v','n','n'): key = "network"; break;
303 case MKTAG( 't','r','k','n'): key = "track";
304 parse = mov_metadata_track_or_disc_number; break;
305 case MKTAG( 'd','i','s','k'): key = "disc";
306 parse = mov_metadata_track_or_disc_number; break;
307 case MKTAG( 't','v','e','s'): key = "episode_sort";
308 parse = mov_metadata_int8_bypass_padding; break;
309 case MKTAG( 't','v','s','n'): key = "season_number";
310 parse = mov_metadata_int8_bypass_padding; break;
311 case MKTAG( 's','t','i','k'): key = "media_type";
312 parse = mov_metadata_int8_no_padding; break;
313 case MKTAG( 'h','d','v','d'): key = "hd_video";
314 parse = mov_metadata_int8_no_padding; break;
315 case MKTAG( 'p','g','a','p'): key = "gapless_playback";
316 parse = mov_metadata_int8_no_padding; break;
317 case MKTAG( '@','P','R','M'):
318 return mov_metadata_raw(c, pb, atom.size, "premiere_version");
319 case MKTAG( '@','P','R','Q'):
320 return mov_metadata_raw(c, pb, atom.size, "quicktime_version");
321 case MKTAG( 'l','o','c','i'):
322 return mov_metadata_loci(c, pb, atom.size);
323 case MKTAG( 'X','M','P','_'):
324 return mov_metadata_raw(c, pb, atom.size, "xmp");
325 }
326
327 if (c->itunes_metadata && atom.size > 8) {
328 int data_size = avio_rb32(pb);
329 int tag = avio_rl32(pb);
330 if (tag == MKTAG('d','a','t','a')) {
331 data_type = avio_rb32(pb); // type
332 avio_rb32(pb); // unknown
333 str_size = data_size - 16;
334 atom.size -= 16;
335
336 if (atom.type == MKTAG('c', 'o', 'v', 'r')) {
337 int ret = mov_read_covr(c, pb, data_type, str_size);
338 if (ret < 0) {
339 av_log(c->fc, AV_LOG_ERROR, "Error parsing cover art.\n");
340 }
341 return ret;
342 }
343 } else return 0;
344 } else if (atom.size > 4 && key && !c->itunes_metadata) {
345 str_size = avio_rb16(pb); // string length
346 langcode = avio_rb16(pb);
347 ff_mov_lang_to_iso639(langcode, language);
348 atom.size -= 4;
349 } else
350 str_size = atom.size;
351
f6fa7814 352 if (c->export_all && !key) {
2ba45a60
DM		 353 snprintf(tmp_key, 5, "%.4s", (char*)&atom.type);
354 key = tmp_key;
355 }
2ba45a60
DM		 356
357 if (!key)
358 return 0;
0e279ba6 359 if (atom.size < 0 || str_size >= INT_MAX/2)
2ba45a60
DM		 360 return AVERROR_INVALIDDATA;
361
f6fa7814
DM		 362 str_size_alloc = str_size << 1; // worst-case requirement for output string in case of utf8 coded input
363 str = av_malloc(str_size_alloc);
364 if (!str)
365 return AVERROR(ENOMEM);
2ba45a60
DM		 366
367 if (parse)
368 parse(c, pb, str_size, key);
369 else {
370 if (data_type == 3 || (data_type == 0 && (langcode < 0x400 || langcode == 0x7fff))) { // MAC Encoded
f6fa7814 371 mov_read_mac_string(c, pb, str_size, str, str_size_alloc);
2ba45a60
DM		 372 } else {
373 int ret = avio_read(pb, str, str_size);
f6fa7814
DM		 374 if (ret != str_size) {
375 av_freep(&str);
2ba45a60 376 return ret < 0 ? ret : AVERROR_INVALIDDATA;
f6fa7814 377 }
2ba45a60
DM		 378 str[str_size] = 0;
379 }
380 c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
381 av_dict_set(&c->fc->metadata, key, str, 0);
382 if (*language && strcmp(language, "und")) {
383 snprintf(key2, sizeof(key2), "%s-%s", key, language);
384 av_dict_set(&c->fc->metadata, key2, str, 0);
385 }
386 }
387 av_dlog(c->fc, "lang \"%3s\" ", language);
388 av_dlog(c->fc, "tag \"%s\" value \"%s\" atom \"%.4s\" %d %"PRId64"\n",
f6fa7814 389 key, str, (char*)&atom.type, str_size_alloc, atom.size);
2ba45a60 390
f6fa7814 391 av_freep(&str);
2ba45a60
DM		 392 return 0;
393}
394
395static int mov_read_chpl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
396{
397 int64_t start;
398 int i, nb_chapters, str_len, version;
399 char str[256+1];
400
401 if ((atom.size -= 5) < 0)
402 return 0;
403
404 version = avio_r8(pb);
405 avio_rb24(pb);
406 if (version)
407 avio_rb32(pb); // ???
408 nb_chapters = avio_r8(pb);
409
410 for (i = 0; i < nb_chapters; i++) {
411 if (atom.size < 9)
412 return 0;
413
414 start = avio_rb64(pb);
415 str_len = avio_r8(pb);
416
417 if ((atom.size -= 9+str_len) < 0)
418 return 0;
419
420 avio_read(pb, str, str_len);
421 str[str_len] = 0;
422 avpriv_new_chapter(c->fc, i, (AVRational){1,10000000}, start, AV_NOPTS_VALUE, str);
423 }
424 return 0;
425}
426
427#define MIN_DATA_ENTRY_BOX_SIZE 12
428static int mov_read_dref(MOVContext *c, AVIOContext *pb, MOVAtom atom)
429{
430 AVStream *st;
431 MOVStreamContext *sc;
432 int entries, i, j;
433
434 if (c->fc->nb_streams < 1)
435 return 0;
436 st = c->fc->streams[c->fc->nb_streams-1];
437 sc = st->priv_data;
438
439 avio_rb32(pb); // version + flags
440 entries = avio_rb32(pb);
441 if (entries > (atom.size - 1) / MIN_DATA_ENTRY_BOX_SIZE + 1 ||
442 entries >= UINT_MAX / sizeof(*sc->drefs))
443 return AVERROR_INVALIDDATA;
444 av_free(sc->drefs);
445 sc->drefs_count = 0;
446 sc->drefs = av_mallocz(entries * sizeof(*sc->drefs));
447 if (!sc->drefs)
448 return AVERROR(ENOMEM);
449 sc->drefs_count = entries;
450
451 for (i = 0; i < sc->drefs_count; i++) {
452 MOVDref *dref = &sc->drefs[i];
453 uint32_t size = avio_rb32(pb);
454 int64_t next = avio_tell(pb) + size - 4;
455
456 if (size < 12)
457 return AVERROR_INVALIDDATA;
458
459 dref->type = avio_rl32(pb);
460 avio_rb32(pb); // version + flags
461 av_dlog(c->fc, "type %.4s size %d\n", (char*)&dref->type, size);
462
463 if (dref->type == MKTAG('a','l','i','s') && size > 150) {
464 /* macintosh alias record */
465 uint16_t volume_len, len;
466 int16_t type;
467
468 avio_skip(pb, 10);
469
470 volume_len = avio_r8(pb);
471 volume_len = FFMIN(volume_len, 27);
472 avio_read(pb, dref->volume, 27);
473 dref->volume[volume_len] = 0;
474 av_log(c->fc, AV_LOG_DEBUG, "volume %s, len %d\n", dref->volume, volume_len);
475
476 avio_skip(pb, 12);
477
478 len = avio_r8(pb);
479 len = FFMIN(len, 63);
480 avio_read(pb, dref->filename, 63);
481 dref->filename[len] = 0;
482 av_log(c->fc, AV_LOG_DEBUG, "filename %s, len %d\n", dref->filename, len);
483
484 avio_skip(pb, 16);
485
486 /* read next level up_from_alias/down_to_target */
487 dref->nlvl_from = avio_rb16(pb);
488 dref->nlvl_to = avio_rb16(pb);
489 av_log(c->fc, AV_LOG_DEBUG, "nlvl from %d, nlvl to %d\n",
490 dref->nlvl_from, dref->nlvl_to);
491
492 avio_skip(pb, 16);
493
494 for (type = 0; type != -1 && avio_tell(pb) < next; ) {
495 if(avio_feof(pb))
496 return AVERROR_EOF;
497 type = avio_rb16(pb);
498 len = avio_rb16(pb);
499 av_log(c->fc, AV_LOG_DEBUG, "type %d, len %d\n", type, len);
500 if (len&1)
501 len += 1;
502 if (type == 2) { // absolute path
503 av_free(dref->path);
504 dref->path = av_mallocz(len+1);
505 if (!dref->path)
506 return AVERROR(ENOMEM);
507 avio_read(pb, dref->path, len);
508 if (len > volume_len && !strncmp(dref->path, dref->volume, volume_len)) {
509 len -= volume_len;
510 memmove(dref->path, dref->path+volume_len, len);
511 dref->path[len] = 0;
512 }
513 for (j = 0; j < len; j++)
514 if (dref->path[j] == ':')
515 dref->path[j] = '/';
516 av_log(c->fc, AV_LOG_DEBUG, "path %s\n", dref->path);
517 } else if (type == 0) { // directory name
518 av_free(dref->dir);
519 dref->dir = av_malloc(len+1);
520 if (!dref->dir)
521 return AVERROR(ENOMEM);
522 if (avio_read(pb, dref->dir, len) != len)
523 return AVERROR_INVALIDDATA;
524 dref->dir[len] = 0;
525 for (j = 0; j < len; j++)
526 if (dref->dir[j] == ':')
527 dref->dir[j] = '/';
528 av_log(c->fc, AV_LOG_DEBUG, "dir %s\n", dref->dir);
529 } else
530 avio_skip(pb, len);
531 }
532 }
533 avio_seek(pb, next, SEEK_SET);
534 }
535 return 0;
536}
537
538static int mov_read_hdlr(MOVContext *c, AVIOContext *pb, MOVAtom atom)
539{
540 AVStream *st;
541 uint32_t type;
542 uint32_t av_unused ctype;
543 int title_size;
544 char *title_str;
545
546 if (c->fc->nb_streams < 1) // meta before first trak
547 return 0;
548
549 st = c->fc->streams[c->fc->nb_streams-1];
550
551 avio_r8(pb); /* version */
552 avio_rb24(pb); /* flags */
553
554 /* component type */
555 ctype = avio_rl32(pb);
556 type = avio_rl32(pb); /* component subtype */
557
558 av_dlog(c->fc, "ctype= %.4s (0x%08x)\n", (char*)&ctype, ctype);
559 av_dlog(c->fc, "stype= %.4s\n", (char*)&type);
560
561 if (type == MKTAG('v','i','d','e'))
562 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
563 else if (type == MKTAG('s','o','u','n'))
564 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
565 else if (type == MKTAG('m','1','a',' '))
566 st->codec->codec_id = AV_CODEC_ID_MP2;
567 else if ((type == MKTAG('s','u','b','p')) || (type == MKTAG('c','l','c','p')))
568 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
569
570 avio_rb32(pb); /* component manufacture */
571 avio_rb32(pb); /* component flags */
572 avio_rb32(pb); /* component flags mask */
573
574 title_size = atom.size - 24;
575 if (title_size > 0) {
576 title_str = av_malloc(title_size + 1); /* Add null terminator */
577 if (!title_str)
578 return AVERROR(ENOMEM);
579 avio_read(pb, title_str, title_size);
580 title_str[title_size] = 0;
581 if (title_str[0])
582 av_dict_set(&st->metadata, "handler_name", title_str +
583 (!c->isom && title_str[0] == title_size - 1), 0);
584 av_freep(&title_str);
585 }
586
587 return 0;
588}
589
590int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb)
591{
592 AVStream *st;
593 int tag;
594
595 if (fc->nb_streams < 1)
596 return 0;
597 st = fc->streams[fc->nb_streams-1];
598
599 avio_rb32(pb); /* version + flags */
600 ff_mp4_read_descr(fc, pb, &tag);
601 if (tag == MP4ESDescrTag) {
602 ff_mp4_parse_es_descr(pb, NULL);
603 } else
604 avio_rb16(pb); /* ID */
605
606 ff_mp4_read_descr(fc, pb, &tag);
607 if (tag == MP4DecConfigDescrTag)
608 ff_mp4_read_dec_config_descr(fc, st, pb);
609 return 0;
610}
611
612static int mov_read_esds(MOVContext *c, AVIOContext *pb, MOVAtom atom)
613{
614 return ff_mov_read_esds(c->fc, pb);
615}
616
617static int mov_read_dac3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
618{
619 AVStream *st;
620 int ac3info, acmod, lfeon, bsmod;
621
622 if (c->fc->nb_streams < 1)
623 return 0;
624 st = c->fc->streams[c->fc->nb_streams-1];
625
626 ac3info = avio_rb24(pb);
627 bsmod = (ac3info >> 14) & 0x7;
628 acmod = (ac3info >> 11) & 0x7;
629 lfeon = (ac3info >> 10) & 0x1;
630 st->codec->channels = ((int[]){2,1,2,3,3,4,4,5})[acmod] + lfeon;
631 st->codec->channel_layout = avpriv_ac3_channel_layout_tab[acmod];
632 if (lfeon)
633 st->codec->channel_layout |= AV_CH_LOW_FREQUENCY;
634 st->codec->audio_service_type = bsmod;
635 if (st->codec->channels > 1 && bsmod == 0x7)
636 st->codec->audio_service_type = AV_AUDIO_SERVICE_TYPE_KARAOKE;
637
638 return 0;
639}
640
641static int mov_read_dec3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
642{
643 AVStream *st;
644 int eac3info, acmod, lfeon, bsmod;
645
646 if (c->fc->nb_streams < 1)
647 return 0;
648 st = c->fc->streams[c->fc->nb_streams-1];
649
650 /* No need to parse fields for additional independent substreams and its
651 * associated dependent substreams since libavcodec's E-AC-3 decoder
652 * does not support them yet. */
653 avio_rb16(pb); /* data_rate and num_ind_sub */
654 eac3info = avio_rb24(pb);
655 bsmod = (eac3info >> 12) & 0x1f;
656 acmod = (eac3info >> 9) & 0x7;
657 lfeon = (eac3info >> 8) & 0x1;
658 st->codec->channel_layout = avpriv_ac3_channel_layout_tab[acmod];
659 if (lfeon)
660 st->codec->channel_layout |= AV_CH_LOW_FREQUENCY;
661 st->codec->channels = av_get_channel_layout_nb_channels(st->codec->channel_layout);
662 st->codec->audio_service_type = bsmod;
663 if (st->codec->channels > 1 && bsmod == 0x7)
664 st->codec->audio_service_type = AV_AUDIO_SERVICE_TYPE_KARAOKE;
665
666 return 0;
667}
668
669static int mov_read_chan(MOVContext *c, AVIOContext *pb, MOVAtom atom)
670{
671 AVStream *st;
672
673 if (c->fc->nb_streams < 1)
674 return 0;
675 st = c->fc->streams[c->fc->nb_streams-1];
676
677 if (atom.size < 16)
678 return 0;
679
680 /* skip version and flags */
681 avio_skip(pb, 4);
682
683 ff_mov_read_chan(c->fc, pb, st, atom.size - 4);
684
685 return 0;
686}
687
688static int mov_read_wfex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
689{
690 AVStream *st;
f6fa7814 691 int ret;
2ba45a60
DM		 692
693 if (c->fc->nb_streams < 1)
694 return 0;
695 st = c->fc->streams[c->fc->nb_streams-1];
696
f6fa7814 697 if ((ret = ff_get_wav_header(pb, st->codec, atom.size)) < 0)
2ba45a60 698 av_log(c->fc, AV_LOG_WARNING, "get_wav_header failed\n");
2ba45a60 699
f6fa7814 700 return ret;
2ba45a60
DM		 701}
702
703static int mov_read_pasp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
704{
705 const int num = avio_rb32(pb);
706 const int den = avio_rb32(pb);
707 AVStream *st;
708
709 if (c->fc->nb_streams < 1)
710 return 0;
711 st = c->fc->streams[c->fc->nb_streams-1];
712
713 if ((st->sample_aspect_ratio.den != 1 || st->sample_aspect_ratio.num) && // default
714 (den != st->sample_aspect_ratio.den || num != st->sample_aspect_ratio.num)) {
715 av_log(c->fc, AV_LOG_WARNING,
716 "sample aspect ratio already set to %d:%d, ignoring 'pasp' atom (%d:%d)\n",
717 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
718 num, den);
719 } else if (den != 0) {
720 st->sample_aspect_ratio.num = num;
721 st->sample_aspect_ratio.den = den;
722 }
723 return 0;
724}
725
726/* this atom contains actual media data */
727static int mov_read_mdat(MOVContext *c, AVIOContext *pb, MOVAtom atom)
728{
729 if (atom.size == 0) /* wrong one (MP4) */
730 return 0;
731 c->found_mdat=1;
732 return 0; /* now go for moov */
733}
734
735/* read major brand, minor version and compatible brands and store them as metadata */
736static int mov_read_ftyp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
737{
738 uint32_t minor_ver;
739 int comp_brand_size;
740 char* comp_brands_str;
741 uint8_t type[5] = {0};
742
743 avio_read(pb, type, 4);
744 if (strcmp(type, "qt "))
745 c->isom = 1;
746 av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
747 av_dict_set(&c->fc->metadata, "major_brand", type, 0);
748 minor_ver = avio_rb32(pb); /* minor version */
749 av_dict_set_int(&c->fc->metadata, "minor_version", minor_ver, 0);
750
751 comp_brand_size = atom.size - 8;
752 if (comp_brand_size < 0)
753 return AVERROR_INVALIDDATA;
754 comp_brands_str = av_malloc(comp_brand_size + 1); /* Add null terminator */
755 if (!comp_brands_str)
756 return AVERROR(ENOMEM);
757 avio_read(pb, comp_brands_str, comp_brand_size);
758 comp_brands_str[comp_brand_size] = 0;
759 av_dict_set(&c->fc->metadata, "compatible_brands", comp_brands_str, 0);
760 av_freep(&comp_brands_str);
761
762 return 0;
763}
764
765/* this atom should contain all header atoms */
766static int mov_read_moov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
767{
768 int ret;
769
770 if (c->found_moov) {
771 av_log(c->fc, AV_LOG_WARNING, "Found duplicated MOOV Atom. Skipped it\n");
772 avio_skip(pb, atom.size);
773 return 0;
774 }
775
776 if ((ret = mov_read_default(c, pb, atom)) < 0)
777 return ret;
778 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
779 /* so we don't parse the whole file if over a network */
780 c->found_moov=1;
781 return 0; /* now go for mdat */
782}
783
784static int mov_read_moof(MOVContext *c, AVIOContext *pb, MOVAtom atom)
785{
f6fa7814
DM		 786 if (!c->has_looked_for_mfra && c->use_mfra_for > 0) {
787 c->has_looked_for_mfra = 1;
788 if (pb->seekable) {
789 int ret;
790 av_log(c->fc, AV_LOG_VERBOSE, "stream has moof boxes, will look "
791 "for a mfra\n");
792 if ((ret = mov_read_mfra(c, pb)) < 0) {
793 av_log(c->fc, AV_LOG_VERBOSE, "found a moof box but failed to "
794 "read the mfra (may be a live ismv)\n");
795 }
796 } else {
797 av_log(c->fc, AV_LOG_VERBOSE, "found a moof box but stream is not "
798 "seekable, can not look for mfra\n");
799 }
800 }
2ba45a60
DM		 801 c->fragment.moof_offset = c->fragment.implicit_offset = avio_tell(pb) - 8;
802 av_dlog(c->fc, "moof offset %"PRIx64"\n", c->fragment.moof_offset);
803 return mov_read_default(c, pb, atom);
804}
805
806static void mov_metadata_creation_time(AVDictionary **metadata, int64_t time)
807{
808 char buffer[32];
809 if (time) {
f6fa7814 810 struct tm *ptm, tmbuf;
2ba45a60
DM		 811 time_t timet;
812 if(time >= 2082844800)
813 time -= 2082844800; /* seconds between 1904-01-01 and Epoch */
814 timet = time;
f6fa7814 815 ptm = gmtime_r(&timet, &tmbuf);
2ba45a60 816 if (!ptm) return;
f6fa7814
DM		 817 if (strftime(buffer, sizeof(buffer), "%Y-%m-%d %H:%M:%S", ptm))
818 av_dict_set(metadata, "creation_time", buffer, 0);
2ba45a60
DM		 819 }
820}
821
822static int mov_read_mdhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
823{
824 AVStream *st;
825 MOVStreamContext *sc;
826 int version;
827 char language[4] = {0};
828 unsigned lang;
829 int64_t creation_time;
830
831 if (c->fc->nb_streams < 1)
832 return 0;
833 st = c->fc->streams[c->fc->nb_streams-1];
834 sc = st->priv_data;
835
836 if (sc->time_scale) {
837 av_log(c->fc, AV_LOG_ERROR, "Multiple mdhd?\n");
838 return AVERROR_INVALIDDATA;
839 }
840
841 version = avio_r8(pb);
842 if (version > 1) {
843 avpriv_request_sample(c->fc, "Version %d", version);
844 return AVERROR_PATCHWELCOME;
845 }
846 avio_rb24(pb); /* flags */
847 if (version == 1) {
848 creation_time = avio_rb64(pb);
849 avio_rb64(pb);
850 } else {
851 creation_time = avio_rb32(pb);
852 avio_rb32(pb); /* modification time */
853 }
854 mov_metadata_creation_time(&st->metadata, creation_time);
855
856 sc->time_scale = avio_rb32(pb);
857 st->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
858
859 lang = avio_rb16(pb); /* language */
860 if (ff_mov_lang_to_iso639(lang, language))
861 av_dict_set(&st->metadata, "language", language, 0);
862 avio_rb16(pb); /* quality */
863
864 return 0;
865}
866
867static int mov_read_mvhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
868{
869 int64_t creation_time;
870 int version = avio_r8(pb); /* version */
871 avio_rb24(pb); /* flags */
872
873 if (version == 1) {
874 creation_time = avio_rb64(pb);
875 avio_rb64(pb);
876 } else {
877 creation_time = avio_rb32(pb);
878 avio_rb32(pb); /* modification time */
879 }
880 mov_metadata_creation_time(&c->fc->metadata, creation_time);
881 c->time_scale = avio_rb32(pb); /* time scale */
882
883 av_dlog(c->fc, "time scale = %i\n", c->time_scale);
884
885 c->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
886 // set the AVCodecContext duration because the duration of individual tracks
887 // may be inaccurate
888 if (c->time_scale > 0 && !c->trex_data)
889 c->fc->duration = av_rescale(c->duration, AV_TIME_BASE, c->time_scale);
890 avio_rb32(pb); /* preferred scale */
891
892 avio_rb16(pb); /* preferred volume */
893
894 avio_skip(pb, 10); /* reserved */
895
896 avio_skip(pb, 36); /* display matrix */
897
898 avio_rb32(pb); /* preview time */
899 avio_rb32(pb); /* preview duration */
900 avio_rb32(pb); /* poster time */
901 avio_rb32(pb); /* selection time */
902 avio_rb32(pb); /* selection duration */
903 avio_rb32(pb); /* current time */
904 avio_rb32(pb); /* next track ID */
905 return 0;
906}
907
908static int mov_read_enda(MOVContext *c, AVIOContext *pb, MOVAtom atom)
909{
910 AVStream *st;
911 int little_endian;
912
913 if (c->fc->nb_streams < 1)
914 return 0;
915 st = c->fc->streams[c->fc->nb_streams-1];
916
917 little_endian = avio_rb16(pb) & 0xFF;
918 av_dlog(c->fc, "enda %d\n", little_endian);
919 if (little_endian == 1) {
920 switch (st->codec->codec_id) {
921 case AV_CODEC_ID_PCM_S24BE:
922 st->codec->codec_id = AV_CODEC_ID_PCM_S24LE;
923 break;
924 case AV_CODEC_ID_PCM_S32BE:
925 st->codec->codec_id = AV_CODEC_ID_PCM_S32LE;
926 break;
927 case AV_CODEC_ID_PCM_F32BE:
928 st->codec->codec_id = AV_CODEC_ID_PCM_F32LE;
929 break;
930 case AV_CODEC_ID_PCM_F64BE:
931 st->codec->codec_id = AV_CODEC_ID_PCM_F64LE;
932 break;
933 default:
934 break;
935 }
936 }
937 return 0;
938}
939
f6fa7814
DM		 940static int mov_read_colr(MOVContext *c, AVIOContext *pb, MOVAtom atom)
941{
942 AVStream *st;
943 char color_parameter_type[5] = { 0 };
944 int color_primaries, color_trc, color_matrix;
945
946 if (c->fc->nb_streams < 1)
947 return 0;
948 st = c->fc->streams[c->fc->nb_streams - 1];
949
950 avio_read(pb, color_parameter_type, 4);
951 if (strncmp(color_parameter_type, "nclx", 4) &&
952 strncmp(color_parameter_type, "nclc", 4)) {
953 av_log(c->fc, AV_LOG_WARNING, "unsupported color_parameter_type %s\n",
954 color_parameter_type);
955 return 0;
956 }
957
958 color_primaries = avio_rb16(pb);
959 color_trc = avio_rb16(pb);
960 color_matrix = avio_rb16(pb);
961
962 av_dlog(c->fc, "%s: pri %d trc %d matrix %d",
963 color_parameter_type, color_primaries, color_trc, color_matrix);
964
965 if (c->isom) {
966 uint8_t color_range = avio_r8(pb) >> 7;
967 av_dlog(c->fc, " full %"PRIu8"", color_range);
968 if (color_range)
969 st->codec->color_range = AVCOL_RANGE_JPEG;
970 else
971 st->codec->color_range = AVCOL_RANGE_MPEG;
972 /* 14496-12 references JPEG XR specs (rather than the more complete
973 * 23001-8) so some adjusting is required */
974 if (color_primaries >= AVCOL_PRI_FILM)
975 color_primaries = AVCOL_PRI_UNSPECIFIED;
976 if ((color_trc >= AVCOL_TRC_LINEAR &&
977 color_trc <= AVCOL_TRC_LOG_SQRT) ||
978 color_trc >= AVCOL_TRC_BT2020_10)
979 color_trc = AVCOL_TRC_UNSPECIFIED;
980 if (color_matrix >= AVCOL_SPC_BT2020_NCL)
981 color_matrix = AVCOL_SPC_UNSPECIFIED;
982 st->codec->color_primaries = color_primaries;
983 st->codec->color_trc = color_trc;
984 st->codec->colorspace = color_matrix;
985 } else {
986 /* color primaries, Table 4-4 */
987 switch (color_primaries) {
988 case 1: st->codec->color_primaries = AVCOL_PRI_BT709; break;
989 case 5: st->codec->color_primaries = AVCOL_PRI_SMPTE170M; break;
990 case 6: st->codec->color_primaries = AVCOL_PRI_SMPTE240M; break;
991 }
992 /* color transfer, Table 4-5 */
993 switch (color_trc) {
994 case 1: st->codec->color_trc = AVCOL_TRC_BT709; break;
995 case 7: st->codec->color_trc = AVCOL_TRC_SMPTE240M; break;
996 }
997 /* color matrix, Table 4-6 */
998 switch (color_matrix) {
999 case 1: st->codec->colorspace = AVCOL_SPC_BT709; break;
1000 case 6: st->codec->colorspace = AVCOL_SPC_BT470BG; break;
1001 case 7: st->codec->colorspace = AVCOL_SPC_SMPTE240M; break;
1002 }
1003 }
1004 av_dlog(c->fc, "\n");
1005
1006 return 0;
1007}
1008
2ba45a60
DM		 1009static int mov_read_fiel(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1010{
1011 AVStream *st;
1012 unsigned mov_field_order;
1013 enum AVFieldOrder decoded_field_order = AV_FIELD_UNKNOWN;
1014
1015 if (c->fc->nb_streams < 1) // will happen with jp2 files
1016 return 0;
1017 st = c->fc->streams[c->fc->nb_streams-1];
1018 if (atom.size < 2)
1019 return AVERROR_INVALIDDATA;
1020 mov_field_order = avio_rb16(pb);
1021 if ((mov_field_order & 0xFF00) == 0x0100)
1022 decoded_field_order = AV_FIELD_PROGRESSIVE;
1023 else if ((mov_field_order & 0xFF00) == 0x0200) {
1024 switch (mov_field_order & 0xFF) {
1025 case 0x01: decoded_field_order = AV_FIELD_TT;
1026 break;
1027 case 0x06: decoded_field_order = AV_FIELD_BB;
1028 break;
1029 case 0x09: decoded_field_order = AV_FIELD_TB;
1030 break;
1031 case 0x0E: decoded_field_order = AV_FIELD_BT;
1032 break;
1033 }
1034 }
1035 if (decoded_field_order == AV_FIELD_UNKNOWN && mov_field_order) {
1036 av_log(NULL, AV_LOG_ERROR, "Unknown MOV field order 0x%04x\n", mov_field_order);
1037 }
1038 st->codec->field_order = decoded_field_order;
1039
1040 return 0;
1041}
1042
1043/* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
1044static int mov_read_extradata(MOVContext *c, AVIOContext *pb, MOVAtom atom,
1045 enum AVCodecID codec_id)
1046{
1047 AVStream *st;
1048 uint64_t size;
1049 uint8_t *buf;
1050 int err;
1051
1052 if (c->fc->nb_streams < 1) // will happen with jp2 files
1053 return 0;
1054 st= c->fc->streams[c->fc->nb_streams-1];
1055
1056 if (st->codec->codec_id != codec_id)
1057 return 0; /* unexpected codec_id - don't mess with extradata */
1058
1059 size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
1060 if (size > INT_MAX || (uint64_t)atom.size > INT_MAX)
1061 return AVERROR_INVALIDDATA;
1062 if ((err = av_reallocp(&st->codec->extradata, size)) < 0) {
1063 st->codec->extradata_size = 0;
1064 return err;
1065 }
1066 buf = st->codec->extradata + st->codec->extradata_size;
1067 st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE;
1068 AV_WB32( buf , atom.size + 8);
1069 AV_WL32( buf + 4, atom.type);
1070 err = avio_read(pb, buf + 8, atom.size);
1071 if (err < 0) {
1072 return err;
1073 } else if (err < atom.size) {
1074 av_log(c->fc, AV_LOG_WARNING, "truncated extradata\n");
1075 st->codec->extradata_size -= atom.size - err;
1076 }
1077 memset(buf + 8 + err, 0, FF_INPUT_BUFFER_PADDING_SIZE);
1078 return 0;
1079}
1080
1081/* wrapper functions for reading ALAC/AVS/MJPEG/MJPEG2000 extradata atoms only for those codecs */
1082static int mov_read_alac(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1083{
1084 return mov_read_extradata(c, pb, atom, AV_CODEC_ID_ALAC);
1085}
1086
1087static int mov_read_avss(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1088{
1089 return mov_read_extradata(c, pb, atom, AV_CODEC_ID_AVS);
1090}
1091
1092static int mov_read_jp2h(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1093{
1094 return mov_read_extradata(c, pb, atom, AV_CODEC_ID_JPEG2000);
1095}
1096
1097static int mov_read_avid(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1098{
1099 int ret = mov_read_extradata(c, pb, atom, AV_CODEC_ID_AVUI);
1100 if(ret == 0)
1101 ret = mov_read_extradata(c, pb, atom, AV_CODEC_ID_DNXHD);
1102 return ret;
1103}
1104
1105static int mov_read_targa_y216(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1106{
1107 int ret = mov_read_extradata(c, pb, atom, AV_CODEC_ID_TARGA_Y216);
1108
1109 if (!ret && c->fc->nb_streams >= 1) {
1110 AVCodecContext *avctx = c->fc->streams[c->fc->nb_streams-1]->codec;
1111 if (avctx->extradata_size >= 40) {
1112 avctx->height = AV_RB16(&avctx->extradata[36]);
1113 avctx->width = AV_RB16(&avctx->extradata[38]);
1114 }
1115 }
1116 return ret;
1117}
1118
1119static int mov_read_ares(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1120{
1121 if (c->fc->nb_streams >= 1) {
1122 AVCodecContext *codec = c->fc->streams[c->fc->nb_streams-1]->codec;
1123 if (codec->codec_tag == MKTAG('A', 'V', 'i', 'n') &&
1124 codec->codec_id == AV_CODEC_ID_H264 &&
1125 atom.size > 11) {
1126 avio_skip(pb, 10);
1127 /* For AVID AVCI50, force width of 1440 to be able to select the correct SPS and PPS */
1128 if (avio_rb16(pb) == 0xd4d)
1129 codec->width = 1440;
1130 return 0;
1131 }
1132 }
1133
1134 return mov_read_avid(c, pb, atom);
1135}
1136
1137static int mov_read_svq3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1138{
1139 return mov_read_extradata(c, pb, atom, AV_CODEC_ID_SVQ3);
1140}
1141
1142static int mov_read_wave(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1143{
1144 AVStream *st;
1145
1146 if (c->fc->nb_streams < 1)
1147 return 0;
1148 st = c->fc->streams[c->fc->nb_streams-1];
1149
1150 if ((uint64_t)atom.size > (1<<30))
1151 return AVERROR_INVALIDDATA;
1152
1153 if (st->codec->codec_id == AV_CODEC_ID_QDM2 ||
1154 st->codec->codec_id == AV_CODEC_ID_QDMC ||
1155 st->codec->codec_id == AV_CODEC_ID_SPEEX) {
1156 // pass all frma atom to codec, needed at least for QDMC and QDM2
0e279ba6 1157 av_freep(&st->codec->extradata);
2ba45a60
DM		 1158 if (ff_get_extradata(st->codec, pb, atom.size) < 0)
1159 return AVERROR(ENOMEM);
1160 } else if (atom.size > 8) { /* to read frma, esds atoms */
1161 int ret;
1162 if ((ret = mov_read_default(c, pb, atom)) < 0)
1163 return ret;
1164 } else
1165 avio_skip(pb, atom.size);
1166 return 0;
1167}
1168
1169/**
1170 * This function reads atom content and puts data in extradata without tag
1171 * nor size unlike mov_read_extradata.
1172 */
1173static int mov_read_glbl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1174{
1175 AVStream *st;
1176
1177 if (c->fc->nb_streams < 1)
1178 return 0;
1179 st = c->fc->streams[c->fc->nb_streams-1];
1180
1181 if ((uint64_t)atom.size > (1<<30))
1182 return AVERROR_INVALIDDATA;
1183
1184 if (atom.size >= 10) {
1185 // Broken files created by legacy versions of libavformat will
1186 // wrap a whole fiel atom inside of a glbl atom.
1187 unsigned size = avio_rb32(pb);
1188 unsigned type = avio_rl32(pb);
1189 avio_seek(pb, -8, SEEK_CUR);
1190 if (type == MKTAG('f','i','e','l') && size == atom.size)
1191 return mov_read_default(c, pb, atom);
1192 }
f6fa7814
DM		 1193 if (st->codec->extradata_size > 1 && st->codec->extradata) {
1194 av_log(c, AV_LOG_WARNING, "ignoring multiple glbl\n");
1195 return 0;
1196 }
0e279ba6 1197 av_freep(&st->codec->extradata);
2ba45a60
DM		 1198 if (ff_get_extradata(st->codec, pb, atom.size) < 0)
1199 return AVERROR(ENOMEM);
1200
1201 return 0;
1202}
1203
1204static int mov_read_dvc1(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1205{
1206 AVStream *st;
1207 uint8_t profile_level;
1208 int ret;
1209
1210 if (c->fc->nb_streams < 1)
1211 return 0;
1212 st = c->fc->streams[c->fc->nb_streams-1];
1213
1214 if (atom.size >= (1<<28) || atom.size < 7)
1215 return AVERROR_INVALIDDATA;
1216
1217 profile_level = avio_r8(pb);
1218 if ((profile_level & 0xf0) != 0xc0)
1219 return 0;
1220
1221 avio_seek(pb, 6, SEEK_CUR);
0e279ba6 1222 av_freep(&st->codec->extradata);
2ba45a60
DM		 1223 if ((ret = ff_get_extradata(st->codec, pb, atom.size - 7)) < 0)
1224 return ret;
1225
1226 return 0;
1227}
1228
1229/**
1230 * An strf atom is a BITMAPINFOHEADER struct. This struct is 40 bytes itself,
1231 * but can have extradata appended at the end after the 40 bytes belonging
1232 * to the struct.
1233 */
1234static int mov_read_strf(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1235{
1236 AVStream *st;
1237
1238 if (c->fc->nb_streams < 1)
1239 return 0;
1240 if (atom.size <= 40)
1241 return 0;
1242 st = c->fc->streams[c->fc->nb_streams-1];
1243
1244 if ((uint64_t)atom.size > (1<<30))
1245 return AVERROR_INVALIDDATA;
1246
1247 avio_skip(pb, 40);
0e279ba6 1248 av_freep(&st->codec->extradata);
2ba45a60
DM		 1249 if (ff_get_extradata(st->codec, pb, atom.size - 40) < 0)
1250 return AVERROR(ENOMEM);
1251 return 0;
1252}
1253
1254static int mov_read_stco(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1255{
1256 AVStream *st;
1257 MOVStreamContext *sc;
1258 unsigned int i, entries;
1259
1260 if (c->fc->nb_streams < 1)
1261 return 0;
1262 st = c->fc->streams[c->fc->nb_streams-1];
1263 sc = st->priv_data;
1264
1265 avio_r8(pb); /* version */
1266 avio_rb24(pb); /* flags */
1267
1268 entries = avio_rb32(pb);
1269
1270 if (!entries)
1271 return 0;
2ba45a60 1272
f6fa7814
DM		 1273 if (sc->chunk_offsets)
1274 av_log(c->fc, AV_LOG_WARNING, "Duplicated STCO atom\n");
1275 av_free(sc->chunk_offsets);
1276 sc->chunk_count = 0;
1277 sc->chunk_offsets = av_malloc_array(entries, sizeof(*sc->chunk_offsets));
2ba45a60
DM		 1278 if (!sc->chunk_offsets)
1279 return AVERROR(ENOMEM);
1280 sc->chunk_count = entries;
1281
1282 if (atom.type == MKTAG('s','t','c','o'))
1283 for (i = 0; i < entries && !pb->eof_reached; i++)
1284 sc->chunk_offsets[i] = avio_rb32(pb);
1285 else if (atom.type == MKTAG('c','o','6','4'))
1286 for (i = 0; i < entries && !pb->eof_reached; i++)
1287 sc->chunk_offsets[i] = avio_rb64(pb);
1288 else
1289 return AVERROR_INVALIDDATA;
1290
1291 sc->chunk_count = i;
1292
1293 if (pb->eof_reached)
1294 return AVERROR_EOF;
1295
1296 return 0;
1297}
1298
1299/**
1300 * Compute codec id for 'lpcm' tag.
1301 * See CoreAudioTypes and AudioStreamBasicDescription at Apple.
1302 */
1303enum AVCodecID ff_mov_get_lpcm_codec_id(int bps, int flags)
1304{
1305 /* lpcm flags:
1306 * 0x1 = float
1307 * 0x2 = big-endian
1308 * 0x4 = signed
1309 */
1310 return ff_get_pcm_codec_id(bps, flags & 1, flags & 2, flags & 4 ? -1 : 0);
1311}
1312
1313static int mov_codec_id(AVStream *st, uint32_t format)
1314{
1315 int id = ff_codec_get_id(ff_codec_movaudio_tags, format);
1316
1317 if (id <= 0 &&
1318 ((format & 0xFFFF) == 'm' + ('s' << 8) ||
1319 (format & 0xFFFF) == 'T' + ('S' << 8)))
1320 id = ff_codec_get_id(ff_codec_wav_tags, av_bswap32(format) & 0xFFFF);
1321
1322 if (st->codec->codec_type != AVMEDIA_TYPE_VIDEO && id > 0) {
1323 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
1324 } else if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO &&
1325 /* skip old asf mpeg4 tag */
1326 format && format != MKTAG('m','p','4','s')) {
1327 id = ff_codec_get_id(ff_codec_movvideo_tags, format);
1328 if (id <= 0)
1329 id = ff_codec_get_id(ff_codec_bmp_tags, format);
1330 if (id > 0)
1331 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
1332 else if (st->codec->codec_type == AVMEDIA_TYPE_DATA ||
1333 (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE &&
1334 st->codec->codec_id == AV_CODEC_ID_NONE)) {
1335 id = ff_codec_get_id(ff_codec_movsubtitle_tags, format);
1336 if (id > 0)
1337 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
1338 }
1339 }
1340
1341 st->codec->codec_tag = format;
1342
1343 return id;
1344}
1345
1346static void mov_parse_stsd_video(MOVContext *c, AVIOContext *pb,
1347 AVStream *st, MOVStreamContext *sc)
1348{
1349 uint8_t codec_name[32];
1350 unsigned int color_depth, len, j;
1351 int color_greyscale;
1352 int color_table_id;
1353
1354 avio_rb16(pb); /* version */
1355 avio_rb16(pb); /* revision level */
1356 avio_rb32(pb); /* vendor */
1357 avio_rb32(pb); /* temporal quality */
1358 avio_rb32(pb); /* spatial quality */
1359
1360 st->codec->width = avio_rb16(pb); /* width */
1361 st->codec->height = avio_rb16(pb); /* height */
1362
1363 avio_rb32(pb); /* horiz resolution */
1364 avio_rb32(pb); /* vert resolution */
1365 avio_rb32(pb); /* data size, always 0 */
1366 avio_rb16(pb); /* frames per samples */
1367
1368 len = avio_r8(pb); /* codec name, pascal string */
1369 if (len > 31)
1370 len = 31;
1371 mov_read_mac_string(c, pb, len, codec_name, sizeof(codec_name));
1372 if (len < 31)
1373 avio_skip(pb, 31 - len);
1374
1375 if (codec_name[0])
1376 av_dict_set(&st->metadata, "encoder", codec_name, 0);
1377
1378 /* codec_tag YV12 triggers an UV swap in rawdec.c */
1379 if (!memcmp(codec_name, "Planar Y'CbCr 8-bit 4:2:0", 25)) {
1380 st->codec->codec_tag = MKTAG('I', '4', '2', '0');
1381 st->codec->width &= ~1;
1382 st->codec->height &= ~1;
1383 }
1384 /* Flash Media Server uses tag H263 with Sorenson Spark */
1385 if (st->codec->codec_tag == MKTAG('H','2','6','3') &&
1386 !memcmp(codec_name, "Sorenson H263", 13))
1387 st->codec->codec_id = AV_CODEC_ID_FLV1;
1388
1389 st->codec->bits_per_coded_sample = avio_rb16(pb); /* depth */
1390 color_table_id = avio_rb16(pb); /* colortable id */
1391 av_dlog(c->fc, "depth %d, ctab id %d\n",
1392 st->codec->bits_per_coded_sample, color_table_id);
1393 /* figure out the palette situation */
1394 color_depth = st->codec->bits_per_coded_sample & 0x1F;
1395 color_greyscale = st->codec->bits_per_coded_sample & 0x20;
1396 /* Do not create a greyscale palette for cinepak */
1397 if (color_greyscale && st->codec->codec_id == AV_CODEC_ID_CINEPAK)
1398 return;
1399
1400 /* if the depth is 2, 4, or 8 bpp, file is palettized */
1401 if ((color_depth == 2) || (color_depth == 4) || (color_depth == 8)) {
1402 /* for palette traversal */
1403 unsigned int color_start, color_count, color_end;
1404 unsigned char a, r, g, b;
1405
1406 if (color_greyscale) {
1407 int color_index, color_dec;
1408 /* compute the greyscale palette */
1409 st->codec->bits_per_coded_sample = color_depth;
1410 color_count = 1 << color_depth;
1411 color_index = 255;
1412 color_dec = 256 / (color_count - 1);
1413 for (j = 0; j < color_count; j++) {
1414 r = g = b = color_index;
1415 sc->palette[j] = (0xFFU << 24) | (r << 16) | (g << 8) | (b);
1416 color_index -= color_dec;
1417 if (color_index < 0)
1418 color_index = 0;
1419 }
1420 } else if (color_table_id) {
1421 const uint8_t *color_table;
1422 /* if flag bit 3 is set, use the default palette */
1423 color_count = 1 << color_depth;
1424 if (color_depth == 2)
1425 color_table = ff_qt_default_palette_4;
1426 else if (color_depth == 4)
1427 color_table = ff_qt_default_palette_16;
1428 else
1429 color_table = ff_qt_default_palette_256;
1430
1431 for (j = 0; j < color_count; j++) {
1432 r = color_table[j * 3 + 0];
1433 g = color_table[j * 3 + 1];
1434 b = color_table[j * 3 + 2];
1435 sc->palette[j] = (0xFFU << 24) | (r << 16) | (g << 8) | (b);
1436 }
1437 } else {
1438 /* load the palette from the file */
1439 color_start = avio_rb32(pb);
1440 color_count = avio_rb16(pb);
1441 color_end = avio_rb16(pb);
1442 if ((color_start <= 255) && (color_end <= 255)) {
1443 for (j = color_start; j <= color_end; j++) {
1444 /* each A, R, G, or B component is 16 bits;
1445 * only use the top 8 bits */
1446 a = avio_r8(pb);
1447 avio_r8(pb);
1448 r = avio_r8(pb);
1449 avio_r8(pb);
1450 g = avio_r8(pb);
1451 avio_r8(pb);
1452 b = avio_r8(pb);
1453 avio_r8(pb);
1454 sc->palette[j] = (a << 24 ) | (r << 16) | (g << 8) | (b);
1455 }
1456 }
1457 }
1458 sc->has_palette = 1;
1459 }
1460}
1461
1462static void mov_parse_stsd_audio(MOVContext *c, AVIOContext *pb,
1463 AVStream *st, MOVStreamContext *sc)
1464{
1465 int bits_per_sample, flags;
1466 uint16_t version = avio_rb16(pb);
1467 AVDictionaryEntry *compatible_brands = av_dict_get(c->fc->metadata, "compatible_brands", NULL, AV_DICT_MATCH_CASE);
1468
1469 avio_rb16(pb); /* revision level */
1470 avio_rb32(pb); /* vendor */
1471
1472 st->codec->channels = avio_rb16(pb); /* channel count */
1473 st->codec->bits_per_coded_sample = avio_rb16(pb); /* sample size */
1474 av_dlog(c->fc, "audio channels %d\n", st->codec->channels);
1475
1476 sc->audio_cid = avio_rb16(pb);
1477 avio_rb16(pb); /* packet size = 0 */
1478
1479 st->codec->sample_rate = ((avio_rb32(pb) >> 16));
1480
1481 // Read QT version 1 fields. In version 0 these do not exist.
1482 av_dlog(c->fc, "version =%d, isom =%d\n", version, c->isom);
1483 if (!c->isom ||
1484 (compatible_brands && strstr(compatible_brands->value, "qt "))) {
1485
1486 if (version == 1) {
1487 sc->samples_per_frame = avio_rb32(pb);
1488 avio_rb32(pb); /* bytes per packet */
1489 sc->bytes_per_frame = avio_rb32(pb);
1490 avio_rb32(pb); /* bytes per sample */
1491 } else if (version == 2) {
1492 avio_rb32(pb); /* sizeof struct only */
1493 st->codec->sample_rate = av_int2double(avio_rb64(pb));
1494 st->codec->channels = avio_rb32(pb);
1495 avio_rb32(pb); /* always 0x7F000000 */
1496 st->codec->bits_per_coded_sample = avio_rb32(pb);
1497
1498 flags = avio_rb32(pb); /* lpcm format specific flag */
1499 sc->bytes_per_frame = avio_rb32(pb);
1500 sc->samples_per_frame = avio_rb32(pb);
1501 if (st->codec->codec_tag == MKTAG('l','p','c','m'))
1502 st->codec->codec_id =
1503 ff_mov_get_lpcm_codec_id(st->codec->bits_per_coded_sample,
1504 flags);
1505 }
1506 }
1507
1508 switch (st->codec->codec_id) {
1509 case AV_CODEC_ID_PCM_S8:
1510 case AV_CODEC_ID_PCM_U8:
1511 if (st->codec->bits_per_coded_sample == 16)
1512 st->codec->codec_id = AV_CODEC_ID_PCM_S16BE;
1513 break;
1514 case AV_CODEC_ID_PCM_S16LE:
1515 case AV_CODEC_ID_PCM_S16BE:
1516 if (st->codec->bits_per_coded_sample == 8)
1517 st->codec->codec_id = AV_CODEC_ID_PCM_S8;
1518 else if (st->codec->bits_per_coded_sample == 24)
1519 st->codec->codec_id =
1520 st->codec->codec_id == AV_CODEC_ID_PCM_S16BE ?
1521 AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE;
f6fa7814
DM		 1522 else if (st->codec->bits_per_coded_sample == 32)
1523 st->codec->codec_id =
1524 st->codec->codec_id == AV_CODEC_ID_PCM_S16BE ?
1525 AV_CODEC_ID_PCM_S32BE : AV_CODEC_ID_PCM_S32LE;
2ba45a60
DM		 1526 break;
1527 /* set values for old format before stsd version 1 appeared */
1528 case AV_CODEC_ID_MACE3:
1529 sc->samples_per_frame = 6;
1530 sc->bytes_per_frame = 2 * st->codec->channels;
1531 break;
1532 case AV_CODEC_ID_MACE6:
1533 sc->samples_per_frame = 6;
1534 sc->bytes_per_frame = 1 * st->codec->channels;
1535 break;
1536 case AV_CODEC_ID_ADPCM_IMA_QT:
1537 sc->samples_per_frame = 64;
1538 sc->bytes_per_frame = 34 * st->codec->channels;
1539 break;
1540 case AV_CODEC_ID_GSM:
1541 sc->samples_per_frame = 160;
1542 sc->bytes_per_frame = 33;
1543 break;
1544 default:
1545 break;
1546 }
1547
1548 bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
1549 if (bits_per_sample) {
1550 st->codec->bits_per_coded_sample = bits_per_sample;
1551 sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
1552 }
1553}
1554
1555static void mov_parse_stsd_subtitle(MOVContext *c, AVIOContext *pb,
1556 AVStream *st, MOVStreamContext *sc,
092a9121 1557 int64_t size)
2ba45a60
DM		 1558{
1559 // ttxt stsd contains display flags, justification, background
1560 // color, fonts, and default styles, so fake an atom to read it
1561 MOVAtom fake_atom = { .size = size };
1562 // mp4s contains a regular esds atom
1563 if (st->codec->codec_tag != AV_RL32("mp4s"))
1564 mov_read_glbl(c, pb, fake_atom);
1565 st->codec->width = sc->width;
1566 st->codec->height = sc->height;
1567}
1568
1569static uint32_t yuv_to_rgba(uint32_t ycbcr)
1570{
1571 uint8_t r, g, b;
1572 int y, cb, cr;
1573
1574 y = (ycbcr >> 16) & 0xFF;
1575 cr = (ycbcr >> 8) & 0xFF;
1576 cb = ycbcr & 0xFF;
1577
1578 b = av_clip_uint8(1.164 * (y - 16) + 2.018 * (cb - 128));
1579 g = av_clip_uint8(1.164 * (y - 16) - 0.813 * (cr - 128) - 0.391 * (cb - 128));
1580 r = av_clip_uint8(1.164 * (y - 16) + 1.596 * (cr - 128));
1581
1582 return (r << 16) | (g << 8) | b;
1583}
1584
1585static int mov_rewrite_dvd_sub_extradata(AVStream *st)
1586{
1587 char buf[256] = {0};
1588 uint8_t *src = st->codec->extradata;
1589 int i;
1590
1591 if (st->codec->extradata_size != 64)
1592 return 0;
1593
1594 if (st->codec->width > 0 && st->codec->height > 0)
1595 snprintf(buf, sizeof(buf), "size: %dx%d\n",
1596 st->codec->width, st->codec->height);
1597 av_strlcat(buf, "palette: ", sizeof(buf));
1598
1599 for (i = 0; i < 16; i++) {
1600 uint32_t yuv = AV_RB32(src + i * 4);
1601 uint32_t rgba = yuv_to_rgba(yuv);
1602
1603 av_strlcatf(buf, sizeof(buf), "%06"PRIx32"%s", rgba, i != 15 ? ", " : "");
1604 }
1605
1606 if (av_strlcat(buf, "\n", sizeof(buf)) >= sizeof(buf))
1607 return 0;
1608
1609 av_freep(&st->codec->extradata);
1610 st->codec->extradata_size = 0;
1611 st->codec->extradata = av_mallocz(strlen(buf) + FF_INPUT_BUFFER_PADDING_SIZE);
1612 if (!st->codec->extradata)
1613 return AVERROR(ENOMEM);
1614 st->codec->extradata_size = strlen(buf);
1615 memcpy(st->codec->extradata, buf, st->codec->extradata_size);
1616
1617 return 0;
1618}
1619
1620static int mov_parse_stsd_data(MOVContext *c, AVIOContext *pb,
1621 AVStream *st, MOVStreamContext *sc,
092a9121 1622 int64_t size)
2ba45a60
DM		 1623{
1624 if (st->codec->codec_tag == MKTAG('t','m','c','d')) {
092a9121 1625 if ((int)size != size || ff_get_extradata(st->codec, pb, size) < 0)
2ba45a60
DM		 1626 return AVERROR(ENOMEM);
1627 if (size > 16) {
1628 MOVStreamContext *tmcd_ctx = st->priv_data;
1629 int val;
1630 val = AV_RB32(st->codec->extradata + 4);
1631 tmcd_ctx->tmcd_flags = val;
1632 if (val & 1)
1633 st->codec->flags2 |= CODEC_FLAG2_DROP_FRAME_TIMECODE;
1634 st->codec->time_base.den = st->codec->extradata[16]; /* number of frame */
1635 st->codec->time_base.num = 1;
1636 if (size > 30) {
1637 uint32_t len = AV_RB32(st->codec->extradata + 18); /* name atom length */
1638 uint32_t format = AV_RB32(st->codec->extradata + 22);
1639 if (format == AV_RB32("name") && (int64_t)size >= (int64_t)len + 18) {
1640 uint16_t str_size = AV_RB16(st->codec->extradata + 26); /* string length */
1641 if (str_size > 0 && size >= (int)str_size + 26) {
1642 char *reel_name = av_malloc(str_size + 1);
1643 if (!reel_name)
1644 return AVERROR(ENOMEM);
1645 memcpy(reel_name, st->codec->extradata + 30, str_size);
1646 reel_name[str_size] = 0; /* Add null terminator */
1647 /* don't add reel_name if emtpy string */
1648 if (*reel_name == 0) {
1649 av_free(reel_name);
1650 } else {
1651 av_dict_set(&st->metadata, "reel_name", reel_name, AV_DICT_DONT_STRDUP_VAL);
1652 }
1653 }
1654 }
1655 }
1656 }
1657 } else {
1658 /* other codec type, just skip (rtp, mp4s ...) */
1659 avio_skip(pb, size);
1660 }
1661 return 0;
1662}
1663
1664static int mov_finalize_stsd_codec(MOVContext *c, AVIOContext *pb,
1665 AVStream *st, MOVStreamContext *sc)
1666{
1667 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
1668 !st->codec->sample_rate && sc->time_scale > 1)
1669 st->codec->sample_rate = sc->time_scale;
1670
1671 /* special codec parameters handling */
1672 switch (st->codec->codec_id) {
1673#if CONFIG_DV_DEMUXER
1674 case AV_CODEC_ID_DVAUDIO:
1675 c->dv_fctx = avformat_alloc_context();
1676 c->dv_demux = avpriv_dv_init_demux(c->dv_fctx);
1677 if (!c->dv_demux) {
1678 av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
1679 return AVERROR(ENOMEM);
1680 }
1681 sc->dv_audio_container = 1;
1682 st->codec->codec_id = AV_CODEC_ID_PCM_S16LE;
1683 break;
1684#endif
1685 /* no ifdef since parameters are always those */
1686 case AV_CODEC_ID_QCELP:
1687 st->codec->channels = 1;
1688 // force sample rate for qcelp when not stored in mov
1689 if (st->codec->codec_tag != MKTAG('Q','c','l','p'))
1690 st->codec->sample_rate = 8000;
1691 // FIXME: Why is the following needed for some files?
1692 sc->samples_per_frame = 160;
1693 if (!sc->bytes_per_frame)
1694 sc->bytes_per_frame = 35;
1695 break;
1696 case AV_CODEC_ID_AMR_NB:
1697 st->codec->channels = 1;
1698 /* force sample rate for amr, stsd in 3gp does not store sample rate */
1699 st->codec->sample_rate = 8000;
1700 break;
1701 case AV_CODEC_ID_AMR_WB:
1702 st->codec->channels = 1;
1703 st->codec->sample_rate = 16000;
1704 break;
1705 case AV_CODEC_ID_MP2:
1706 case AV_CODEC_ID_MP3:
1707 /* force type after stsd for m1a hdlr */
1708 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
1709 st->need_parsing = AVSTREAM_PARSE_FULL;
1710 break;
1711 case AV_CODEC_ID_GSM:
1712 case AV_CODEC_ID_ADPCM_MS:
1713 case AV_CODEC_ID_ADPCM_IMA_WAV:
1714 case AV_CODEC_ID_ILBC:
1715 case AV_CODEC_ID_MACE3:
1716 case AV_CODEC_ID_MACE6:
1717 case AV_CODEC_ID_QDM2:
1718 st->codec->block_align = sc->bytes_per_frame;
1719 break;
1720 case AV_CODEC_ID_ALAC:
1721 if (st->codec->extradata_size == 36) {
1722 st->codec->channels = AV_RB8 (st->codec->extradata + 21);
1723 st->codec->sample_rate = AV_RB32(st->codec->extradata + 32);
1724 }
1725 break;
1726 case AV_CODEC_ID_AC3:
f6fa7814 1727 case AV_CODEC_ID_EAC3:
2ba45a60
DM		 1728 case AV_CODEC_ID_MPEG1VIDEO:
1729 case AV_CODEC_ID_VC1:
1730 st->need_parsing = AVSTREAM_PARSE_FULL;
1731 break;
1732 default:
1733 break;
1734 }
1735 return 0;
1736}
1737
1738static int mov_skip_multiple_stsd(MOVContext *c, AVIOContext *pb,
1739 int codec_tag, int format,
1740 int64_t size)
1741{
1742 int video_codec_id = ff_codec_get_id(ff_codec_movvideo_tags, format);
1743
1744 if (codec_tag &&
1745 (codec_tag != format &&
1746 (c->fc->video_codec_id ? video_codec_id != c->fc->video_codec_id
1747 : codec_tag != MKTAG('j','p','e','g')))) {
1748 /* Multiple fourcc, we skip JPEG. This is not correct, we should
1749 * export it as a separate AVStream but this needs a few changes
1750 * in the MOV demuxer, patch welcome. */
1751
1752 av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n");
1753 avio_skip(pb, size);
1754 return 1;
1755 }
1756 if ( codec_tag == AV_RL32("avc1") ||
1757 codec_tag == AV_RL32("hvc1") ||
1758 codec_tag == AV_RL32("hev1")
1759 )
1760 av_log(c->fc, AV_LOG_WARNING, "Concatenated H.264 or H.265 might not play correctly.\n");
1761
1762 return 0;
1763}
1764
1765int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries)
1766{
1767 AVStream *st;
1768 MOVStreamContext *sc;
1769 int pseudo_stream_id;
1770
1771 if (c->fc->nb_streams < 1)
1772 return 0;
1773 st = c->fc->streams[c->fc->nb_streams-1];
1774 sc = st->priv_data;
1775
1776 for (pseudo_stream_id = 0;
1777 pseudo_stream_id < entries && !pb->eof_reached;
1778 pseudo_stream_id++) {
1779 //Parsing Sample description table
1780 enum AVCodecID id;
1781 int ret, dref_id = 1;
1782 MOVAtom a = { AV_RL32("stsd") };
1783 int64_t start_pos = avio_tell(pb);
1784 int64_t size = avio_rb32(pb); /* size */
1785 uint32_t format = avio_rl32(pb); /* data format */
1786
1787 if (size >= 16) {
1788 avio_rb32(pb); /* reserved */
1789 avio_rb16(pb); /* reserved */
1790 dref_id = avio_rb16(pb);
1791 }else if (size <= 7){
1792 av_log(c->fc, AV_LOG_ERROR, "invalid size %"PRId64" in stsd\n", size);
1793 return AVERROR_INVALIDDATA;
1794 }
1795
1796 if (mov_skip_multiple_stsd(c, pb, st->codec->codec_tag, format,
1797 size - (avio_tell(pb) - start_pos)))
1798 continue;
1799
1800 sc->pseudo_stream_id = st->codec->codec_tag ? -1 : pseudo_stream_id;
1801 sc->dref_id= dref_id;
1802
1803 id = mov_codec_id(st, format);
1804
1805 av_dlog(c->fc, "size=%"PRId64" 4CC= %c%c%c%c codec_type=%d\n", size,
1806 (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff,
1807 (format >> 24) & 0xff, st->codec->codec_type);
1808
1809 if (st->codec->codec_type==AVMEDIA_TYPE_VIDEO) {
1810 st->codec->codec_id = id;
1811 mov_parse_stsd_video(c, pb, st, sc);
1812 } else if (st->codec->codec_type==AVMEDIA_TYPE_AUDIO) {
1813 st->codec->codec_id = id;
1814 mov_parse_stsd_audio(c, pb, st, sc);
1815 } else if (st->codec->codec_type==AVMEDIA_TYPE_SUBTITLE){
1816 st->codec->codec_id = id;
1817 mov_parse_stsd_subtitle(c, pb, st, sc,
1818 size - (avio_tell(pb) - start_pos));
1819 } else {
1820 ret = mov_parse_stsd_data(c, pb, st, sc,
1821 size - (avio_tell(pb) - start_pos));
1822 if (ret < 0)
1823 return ret;
1824 }
1825 /* this will read extra atoms at the end (wave, alac, damr, avcC, hvcC, SMI ...) */
1826 a.size = size - (avio_tell(pb) - start_pos);
1827 if (a.size > 8) {
1828 if ((ret = mov_read_default(c, pb, a)) < 0)
1829 return ret;
1830 } else if (a.size > 0)
1831 avio_skip(pb, a.size);
1832 }
1833
1834 if (pb->eof_reached)
1835 return AVERROR_EOF;
1836
1837 return mov_finalize_stsd_codec(c, pb, st, sc);
1838}
1839
1840static int mov_read_stsd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1841{
1842 int entries;
1843
1844 avio_r8(pb); /* version */
1845 avio_rb24(pb); /* flags */
1846 entries = avio_rb32(pb);
1847
1848 return ff_mov_read_stsd_entries(c, pb, entries);
1849}
1850
1851static int mov_read_stsc(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1852{
1853 AVStream *st;
1854 MOVStreamContext *sc;
1855 unsigned int i, entries;
1856
1857 if (c->fc->nb_streams < 1)
1858 return 0;
1859 st = c->fc->streams[c->fc->nb_streams-1];
1860 sc = st->priv_data;
1861
1862 avio_r8(pb); /* version */
1863 avio_rb24(pb); /* flags */
1864
1865 entries = avio_rb32(pb);
1866
1867 av_dlog(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
1868
1869 if (!entries)
1870 return 0;
f6fa7814
DM		 1871 if (sc->stsc_data)
1872 av_log(c->fc, AV_LOG_WARNING, "Duplicated STSC atom\n");
1873 av_free(sc->stsc_data);
1874 sc->stsc_count = 0;
1875 sc->stsc_data = av_malloc_array(entries, sizeof(*sc->stsc_data));
2ba45a60
DM		 1876 if (!sc->stsc_data)
1877 return AVERROR(ENOMEM);
1878
1879 for (i = 0; i < entries && !pb->eof_reached; i++) {
1880 sc->stsc_data[i].first = avio_rb32(pb);
1881 sc->stsc_data[i].count = avio_rb32(pb);
1882 sc->stsc_data[i].id = avio_rb32(pb);
1883 }
1884
1885 sc->stsc_count = i;
1886
1887 if (pb->eof_reached)
1888 return AVERROR_EOF;
1889
1890 return 0;
1891}
1892
1893static int mov_read_stps(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1894{
1895 AVStream *st;
1896 MOVStreamContext *sc;
1897 unsigned i, entries;
1898
1899 if (c->fc->nb_streams < 1)
1900 return 0;
1901 st = c->fc->streams[c->fc->nb_streams-1];
1902 sc = st->priv_data;
1903
1904 avio_rb32(pb); // version + flags
1905
1906 entries = avio_rb32(pb);
f6fa7814
DM		 1907 if (sc->stps_data)
1908 av_log(c->fc, AV_LOG_WARNING, "Duplicated STPS atom\n");
1909 av_free(sc->stps_data);
1910 sc->stps_count = 0;
1911 sc->stps_data = av_malloc_array(entries, sizeof(*sc->stps_data));
2ba45a60
DM		 1912 if (!sc->stps_data)
1913 return AVERROR(ENOMEM);
1914
1915 for (i = 0; i < entries && !pb->eof_reached; i++) {
1916 sc->stps_data[i] = avio_rb32(pb);
1917 //av_dlog(c->fc, "stps %d\n", sc->stps_data[i]);
1918 }
1919
1920 sc->stps_count = i;
1921
1922 if (pb->eof_reached)
1923 return AVERROR_EOF;
1924
1925 return 0;
1926}
1927
1928static int mov_read_stss(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1929{
1930 AVStream *st;
1931 MOVStreamContext *sc;
1932 unsigned int i, entries;
1933
1934 if (c->fc->nb_streams < 1)
1935 return 0;
1936 st = c->fc->streams[c->fc->nb_streams-1];
1937 sc = st->priv_data;
1938
1939 avio_r8(pb); /* version */
1940 avio_rb24(pb); /* flags */
1941
1942 entries = avio_rb32(pb);
1943
1944 av_dlog(c->fc, "keyframe_count = %d\n", entries);
1945
1946 if (!entries)
1947 {
1948 sc->keyframe_absent = 1;
1949 if (!st->need_parsing && st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
1950 st->need_parsing = AVSTREAM_PARSE_HEADERS;
1951 return 0;
1952 }
f6fa7814
DM		 1953 if (sc->keyframes)
1954 av_log(c->fc, AV_LOG_WARNING, "Duplicated STSS atom\n");
1955 av_free(sc->keyframes);
1956 sc->keyframe_count = 0;
1957 sc->keyframes = av_malloc_array(entries, sizeof(*sc->keyframes));
2ba45a60
DM		 1958 if (!sc->keyframes)
1959 return AVERROR(ENOMEM);
1960
1961 for (i = 0; i < entries && !pb->eof_reached; i++) {
1962 sc->keyframes[i] = avio_rb32(pb);
1963 //av_dlog(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
1964 }
1965
1966 sc->keyframe_count = i;
1967
1968 if (pb->eof_reached)
1969 return AVERROR_EOF;
1970
1971 return 0;
1972}
1973
1974static int mov_read_stsz(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1975{
1976 AVStream *st;
1977 MOVStreamContext *sc;
1978 unsigned int i, entries, sample_size, field_size, num_bytes;
1979 GetBitContext gb;
1980 unsigned char* buf;
1981
1982 if (c->fc->nb_streams < 1)
1983 return 0;
1984 st = c->fc->streams[c->fc->nb_streams-1];
1985 sc = st->priv_data;
1986
1987 avio_r8(pb); /* version */
1988 avio_rb24(pb); /* flags */
1989
1990 if (atom.type == MKTAG('s','t','s','z')) {
1991 sample_size = avio_rb32(pb);
1992 if (!sc->sample_size) /* do not overwrite value computed in stsd */
1993 sc->sample_size = sample_size;
1994 sc->stsz_sample_size = sample_size;
1995 field_size = 32;
1996 } else {
1997 sample_size = 0;
1998 avio_rb24(pb); /* reserved */
1999 field_size = avio_r8(pb);
2000 }
2001 entries = avio_rb32(pb);
2002
2003 av_dlog(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, entries);
2004
2005 sc->sample_count = entries;
2006 if (sample_size)
2007 return 0;
2008
2009 if (field_size != 4 && field_size != 8 && field_size != 16 && field_size != 32) {
2010 av_log(c->fc, AV_LOG_ERROR, "Invalid sample field size %d\n", field_size);
2011 return AVERROR_INVALIDDATA;
2012 }
2013
2014 if (!entries)
2015 return 0;
f6fa7814 2016 if (entries >= (UINT_MAX - 4) / field_size)
2ba45a60 2017 return AVERROR_INVALIDDATA;
f6fa7814
DM		 2018 if (sc->sample_sizes)
2019 av_log(c->fc, AV_LOG_WARNING, "Duplicated STSZ atom\n");
2020 av_free(sc->sample_sizes);
2021 sc->sample_count = 0;
2022 sc->sample_sizes = av_malloc_array(entries, sizeof(*sc->sample_sizes));
2ba45a60
DM		 2023 if (!sc->sample_sizes)
2024 return AVERROR(ENOMEM);
2025
2026 num_bytes = (entries*field_size+4)>>3;
2027
2028 buf = av_malloc(num_bytes+FF_INPUT_BUFFER_PADDING_SIZE);
2029 if (!buf) {
2030 av_freep(&sc->sample_sizes);
2031 return AVERROR(ENOMEM);
2032 }
2033
2034 if (avio_read(pb, buf, num_bytes) < num_bytes) {
2035 av_freep(&sc->sample_sizes);
2036 av_free(buf);
2037 return AVERROR_INVALIDDATA;
2038 }
2039
2040 init_get_bits(&gb, buf, 8*num_bytes);
2041
2042 for (i = 0; i < entries && !pb->eof_reached; i++) {
2043 sc->sample_sizes[i] = get_bits_long(&gb, field_size);
2044 sc->data_size += sc->sample_sizes[i];
2045 }
2046
2047 sc->sample_count = i;
2048
2049 if (pb->eof_reached)
2050 return AVERROR_EOF;
2051
2052 av_free(buf);
2053 return 0;
2054}
2055
2056static int mov_read_stts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2057{
2058 AVStream *st;
2059 MOVStreamContext *sc;
2060 unsigned int i, entries;
2061 int64_t duration=0;
2062 int64_t total_sample_count=0;
2063
2064 if (c->fc->nb_streams < 1)
2065 return 0;
2066 st = c->fc->streams[c->fc->nb_streams-1];
2067 sc = st->priv_data;
2068
2069 avio_r8(pb); /* version */
2070 avio_rb24(pb); /* flags */
2071 entries = avio_rb32(pb);
2072
2073 av_dlog(c->fc, "track[%i].stts.entries = %i\n",
2074 c->fc->nb_streams-1, entries);
2075
f6fa7814
DM		 2076 if (sc->stts_data)
2077 av_log(c->fc, AV_LOG_WARNING, "Duplicated STTS atom\n");
2ba45a60 2078 av_free(sc->stts_data);
f6fa7814
DM		 2079 sc->stts_count = 0;
2080 sc->stts_data = av_malloc_array(entries, sizeof(*sc->stts_data));
2ba45a60
DM		 2081 if (!sc->stts_data)
2082 return AVERROR(ENOMEM);
2083
2084 for (i = 0; i < entries && !pb->eof_reached; i++) {
2085 int sample_duration;
2086 int sample_count;
2087
2088 sample_count=avio_rb32(pb);
2089 sample_duration = avio_rb32(pb);
2090
2091 /* sample_duration < 0 is invalid based on the spec */
2092 if (sample_duration < 0) {
2093 av_log(c->fc, AV_LOG_ERROR, "Invalid SampleDelta %d in STTS, at %d st:%d\n",
2094 sample_duration, i, c->fc->nb_streams-1);
2095 sample_duration = 1;
2096 }
2097 if (sample_count < 0) {
2098 av_log(c->fc, AV_LOG_ERROR, "Invalid sample_count=%d\n", sample_count);
2099 return AVERROR_INVALIDDATA;
2100 }
2101 sc->stts_data[i].count= sample_count;
2102 sc->stts_data[i].duration= sample_duration;
2103
2104 av_dlog(c->fc, "sample_count=%d, sample_duration=%d\n",
2105 sample_count, sample_duration);
2106
2107 if ( i+1 == entries
2108 && i
2109 && sample_count == 1
2110 && total_sample_count > 100
2111 && sample_duration/10 > duration / total_sample_count)
2112 sample_duration = duration / total_sample_count;
2113 duration+=(int64_t)sample_duration*sample_count;
2114 total_sample_count+=sample_count;
2115 }
2116
2117 sc->stts_count = i;
2118
2119 sc->duration_for_fps += duration;
2120 sc->nb_frames_for_fps += total_sample_count;
2121
2122 if (pb->eof_reached)
2123 return AVERROR_EOF;
2124
2125 st->nb_frames= total_sample_count;
2126 if (duration)
2127 st->duration= duration;
2128 sc->track_end = duration;
2129 return 0;
2130}
2131
2132static void mov_update_dts_shift(MOVStreamContext *sc, int duration)
2133{
2134 if (duration < 0) {
2135 sc->dts_shift = FFMAX(sc->dts_shift, -duration);
2136 }
2137}
2138
2139static int mov_read_ctts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2140{
2141 AVStream *st;
2142 MOVStreamContext *sc;
2143 unsigned int i, entries;
2144
2145 if (c->fc->nb_streams < 1)
2146 return 0;
2147 st = c->fc->streams[c->fc->nb_streams-1];
2148 sc = st->priv_data;
2149
2150 avio_r8(pb); /* version */
2151 avio_rb24(pb); /* flags */
2152 entries = avio_rb32(pb);
2153
2154 av_dlog(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
2155
2156 if (!entries)
2157 return 0;
2158 if (entries >= UINT_MAX / sizeof(*sc->ctts_data))
2159 return AVERROR_INVALIDDATA;
2160 sc->ctts_data = av_malloc(entries * sizeof(*sc->ctts_data));
2161 if (!sc->ctts_data)
2162 return AVERROR(ENOMEM);
2163
2164 for (i = 0; i < entries && !pb->eof_reached; i++) {
2165 int count =avio_rb32(pb);
2166 int duration =avio_rb32(pb);
2167
2168 sc->ctts_data[i].count = count;
2169 sc->ctts_data[i].duration= duration;
2170
2171 av_dlog(c->fc, "count=%d, duration=%d\n",
2172 count, duration);
2173
2174 if (FFABS(duration) > (1<<28) && i+2<entries) {
2175 av_log(c->fc, AV_LOG_WARNING, "CTTS invalid\n");
2176 av_freep(&sc->ctts_data);
2177 sc->ctts_count = 0;
2178 return 0;
2179 }
2180
2181 if (i+2<entries)
2182 mov_update_dts_shift(sc, duration);
2183 }
2184
2185 sc->ctts_count = i;
2186
2187 if (pb->eof_reached)
2188 return AVERROR_EOF;
2189
2190 av_dlog(c->fc, "dts shift %d\n", sc->dts_shift);
2191
2192 return 0;
2193}
2194
2195static int mov_read_sbgp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2196{
2197 AVStream *st;
2198 MOVStreamContext *sc;
2199 unsigned int i, entries;
2200 uint8_t version;
2201 uint32_t grouping_type;
2202
2203 if (c->fc->nb_streams < 1)
2204 return 0;
2205 st = c->fc->streams[c->fc->nb_streams-1];
2206 sc = st->priv_data;
2207
2208 version = avio_r8(pb); /* version */
2209 avio_rb24(pb); /* flags */
2210 grouping_type = avio_rl32(pb);
2211 if (grouping_type != MKTAG( 'r','a','p',' '))
2212 return 0; /* only support 'rap ' grouping */
2213 if (version == 1)
2214 avio_rb32(pb); /* grouping_type_parameter */
2215
2216 entries = avio_rb32(pb);
2217 if (!entries)
2218 return 0;
f6fa7814
DM		 2219 if (sc->rap_group)
2220 av_log(c->fc, AV_LOG_WARNING, "Duplicated SBGP atom\n");
2221 av_free(sc->rap_group);
2222 sc->rap_group_count = 0;
2223 sc->rap_group = av_malloc_array(entries, sizeof(*sc->rap_group));
2ba45a60
DM		 2224 if (!sc->rap_group)
2225 return AVERROR(ENOMEM);
2226
2227 for (i = 0; i < entries && !pb->eof_reached; i++) {
2228 sc->rap_group[i].count = avio_rb32(pb); /* sample_count */
2229 sc->rap_group[i].index = avio_rb32(pb); /* group_description_index */
2230 }
2231
2232 sc->rap_group_count = i;
2233
2234 return pb->eof_reached ? AVERROR_EOF : 0;
2235}
2236
2237static void mov_build_index(MOVContext *mov, AVStream *st)
2238{
2239 MOVStreamContext *sc = st->priv_data;
2240 int64_t current_offset;
2241 int64_t current_dts = 0;
2242 unsigned int stts_index = 0;
2243 unsigned int stsc_index = 0;
2244 unsigned int stss_index = 0;
2245 unsigned int stps_index = 0;
2246 unsigned int i, j;
2247 uint64_t stream_size = 0;
2248
2249 /* adjust first dts according to edit list */
2250 if ((sc->empty_duration || sc->start_time) && mov->time_scale > 0) {
2251 if (sc->empty_duration)
2252 sc->empty_duration = av_rescale(sc->empty_duration, sc->time_scale, mov->time_scale);
2253 sc->time_offset = sc->start_time - sc->empty_duration;
2254 current_dts = -sc->time_offset;
2255 if (sc->ctts_count>0 && sc->stts_count>0 &&
2256 sc->ctts_data[0].duration / FFMAX(sc->stts_data[0].duration, 1) > 16) {
2257 /* more than 16 frames delay, dts are likely wrong
2258 this happens with files created by iMovie */
2259 sc->wrong_dts = 1;
2260 st->codec->has_b_frames = 1;
2261 }
2262 }
2263
2264 /* only use old uncompressed audio chunk demuxing when stts specifies it */
2265 if (!(st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
2266 sc->stts_count == 1 && sc->stts_data[0].duration == 1)) {
2267 unsigned int current_sample = 0;
2268 unsigned int stts_sample = 0;
2269 unsigned int sample_size;
2270 unsigned int distance = 0;
2271 unsigned int rap_group_index = 0;
2272 unsigned int rap_group_sample = 0;
2273 int rap_group_present = sc->rap_group_count && sc->rap_group;
2274 int key_off = (sc->keyframe_count && sc->keyframes[0] > 0) || (sc->stps_count && sc->stps_data[0] > 0);
2275
2276 current_dts -= sc->dts_shift;
2277
2278 if (!sc->sample_count || st->nb_index_entries)
2279 return;
2280 if (sc->sample_count >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries)
2281 return;
2282 if (av_reallocp_array(&st->index_entries,
2283 st->nb_index_entries + sc->sample_count,
2284 sizeof(*st->index_entries)) < 0) {
2285 st->nb_index_entries = 0;
2286 return;
2287 }
2288 st->index_entries_allocated_size = (st->nb_index_entries + sc->sample_count) * sizeof(*st->index_entries);
2289
2290 for (i = 0; i < sc->chunk_count; i++) {
2291 int64_t next_offset = i+1 < sc->chunk_count ? sc->chunk_offsets[i+1] : INT64_MAX;
2292 current_offset = sc->chunk_offsets[i];
2293 while (stsc_index + 1 < sc->stsc_count &&
2294 i + 1 == sc->stsc_data[stsc_index + 1].first)
2295 stsc_index++;
2296
2297 if (next_offset > current_offset && sc->sample_size>0 && sc->sample_size < sc->stsz_sample_size &&
2298 sc->stsc_data[stsc_index].count * (int64_t)sc->stsz_sample_size > next_offset - current_offset) {
2299 av_log(mov->fc, AV_LOG_WARNING, "STSZ sample size %d invalid (too large), ignoring\n", sc->stsz_sample_size);
2300 sc->stsz_sample_size = sc->sample_size;
2301 }
2302 if (sc->stsz_sample_size>0 && sc->stsz_sample_size < sc->sample_size) {
2303 av_log(mov->fc, AV_LOG_WARNING, "STSZ sample size %d invalid (too small), ignoring\n", sc->stsz_sample_size);
2304 sc->stsz_sample_size = sc->sample_size;
2305 }
2306
2307 for (j = 0; j < sc->stsc_data[stsc_index].count; j++) {
2308 int keyframe = 0;
2309 if (current_sample >= sc->sample_count) {
2310 av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
2311 return;
2312 }
2313
2314 if (!sc->keyframe_absent && (!sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index])) {
2315 keyframe = 1;
2316 if (stss_index + 1 < sc->keyframe_count)
2317 stss_index++;
2318 } else if (sc->stps_count && current_sample+key_off == sc->stps_data[stps_index]) {
2319 keyframe = 1;
2320 if (stps_index + 1 < sc->stps_count)
2321 stps_index++;
2322 }
2323 if (rap_group_present && rap_group_index < sc->rap_group_count) {
2324 if (sc->rap_group[rap_group_index].index > 0)
2325 keyframe = 1;
2326 if (++rap_group_sample == sc->rap_group[rap_group_index].count) {
2327 rap_group_sample = 0;
2328 rap_group_index++;
2329 }
2330 }
2331 if (sc->keyframe_absent
2332 && !sc->stps_count
2333 && !rap_group_present
2334 && (st->codec->codec_type == AVMEDIA_TYPE_AUDIO || (i==0 && j==0)))
2335 keyframe = 1;
2336 if (keyframe)
2337 distance = 0;
2338 sample_size = sc->stsz_sample_size > 0 ? sc->stsz_sample_size : sc->sample_sizes[current_sample];
2339 if (sc->pseudo_stream_id == -1 ||
2340 sc->stsc_data[stsc_index].id - 1 == sc->pseudo_stream_id) {
2341 AVIndexEntry *e = &st->index_entries[st->nb_index_entries++];
2342 e->pos = current_offset;
2343 e->timestamp = current_dts;
2344 e->size = sample_size;
2345 e->min_distance = distance;
2346 e->flags = keyframe ? AVINDEX_KEYFRAME : 0;
2347 av_dlog(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
2348 "size %d, distance %d, keyframe %d\n", st->index, current_sample,
2349 current_offset, current_dts, sample_size, distance, keyframe);
2350 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && st->nb_index_entries < 100)
2351 ff_rfps_add_frame(mov->fc, st, current_dts);
2352 }
2353
2354 current_offset += sample_size;
2355 stream_size += sample_size;
2356 current_dts += sc->stts_data[stts_index].duration;
2357 distance++;
2358 stts_sample++;
2359 current_sample++;
2360 if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
2361 stts_sample = 0;
2362 stts_index++;
2363 }
2364 }
2365 }
2366 if (st->duration > 0)
2367 st->codec->bit_rate = stream_size*8*sc->time_scale/st->duration;
2368 } else {
2369 unsigned chunk_samples, total = 0;
2370
2371 // compute total chunk count
2372 for (i = 0; i < sc->stsc_count; i++) {
2373 unsigned count, chunk_count;
2374
2375 chunk_samples = sc->stsc_data[i].count;
2376 if (i != sc->stsc_count - 1 &&
2377 sc->samples_per_frame && chunk_samples % sc->samples_per_frame) {
2378 av_log(mov->fc, AV_LOG_ERROR, "error unaligned chunk\n");
2379 return;
2380 }
2381
2382 if (sc->samples_per_frame >= 160) { // gsm
2383 count = chunk_samples / sc->samples_per_frame;
2384 } else if (sc->samples_per_frame > 1) {
2385 unsigned samples = (1024/sc->samples_per_frame)*sc->samples_per_frame;
2386 count = (chunk_samples+samples-1) / samples;
2387 } else {
2388 count = (chunk_samples+1023) / 1024;
2389 }
2390
2391 if (i < sc->stsc_count - 1)
2392 chunk_count = sc->stsc_data[i+1].first - sc->stsc_data[i].first;
2393 else
2394 chunk_count = sc->chunk_count - (sc->stsc_data[i].first - 1);
2395 total += chunk_count * count;
2396 }
2397
2398 av_dlog(mov->fc, "chunk count %d\n", total);
2399 if (total >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries)
2400 return;
2401 if (av_reallocp_array(&st->index_entries,
2402 st->nb_index_entries + total,
2403 sizeof(*st->index_entries)) < 0) {
2404 st->nb_index_entries = 0;
2405 return;
2406 }
2407 st->index_entries_allocated_size = (st->nb_index_entries + total) * sizeof(*st->index_entries);
2408
2409 // populate index
2410 for (i = 0; i < sc->chunk_count; i++) {
2411 current_offset = sc->chunk_offsets[i];
2412 if (stsc_index + 1 < sc->stsc_count &&
2413 i + 1 == sc->stsc_data[stsc_index + 1].first)
2414 stsc_index++;
2415 chunk_samples = sc->stsc_data[stsc_index].count;
2416
2417 while (chunk_samples > 0) {
2418 AVIndexEntry *e;
2419 unsigned size, samples;
2420
2421 if (sc->samples_per_frame >= 160) { // gsm
2422 samples = sc->samples_per_frame;
2423 size = sc->bytes_per_frame;
2424 } else {
2425 if (sc->samples_per_frame > 1) {
2426 samples = FFMIN((1024 / sc->samples_per_frame)*
2427 sc->samples_per_frame, chunk_samples);
2428 size = (samples / sc->samples_per_frame) * sc->bytes_per_frame;
2429 } else {
2430 samples = FFMIN(1024, chunk_samples);
2431 size = samples * sc->sample_size;
2432 }
2433 }
2434
2435 if (st->nb_index_entries >= total) {
2436 av_log(mov->fc, AV_LOG_ERROR, "wrong chunk count %d\n", total);
2437 return;
2438 }
2439 e = &st->index_entries[st->nb_index_entries++];
2440 e->pos = current_offset;
2441 e->timestamp = current_dts;
2442 e->size = size;
2443 e->min_distance = 0;
2444 e->flags = AVINDEX_KEYFRAME;
2445 av_dlog(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", "
2446 "size %d, duration %d\n", st->index, i, current_offset, current_dts,
2447 size, samples);
2448
2449 current_offset += size;
2450 current_dts += samples;
2451 chunk_samples -= samples;
2452 }
2453 }
2454 }
2455}
2456
2457static int mov_open_dref(AVIOContext **pb, const char *src, MOVDref *ref,
2458 AVIOInterruptCB *int_cb, int use_absolute_path, AVFormatContext *fc)
2459{
2460 /* try relative path, we do not try the absolute because it can leak information about our
2461 system to an attacker */
2462 if (ref->nlvl_to > 0 && ref->nlvl_from > 0) {
2463 char filename[1024];
2464 const char *src_path;
2465 int i, l;
2466
2467 /* find a source dir */
2468 src_path = strrchr(src, '/');
2469 if (src_path)
2470 src_path++;
2471 else
2472 src_path = src;
2473
2474 /* find a next level down to target */
2475 for (i = 0, l = strlen(ref->path) - 1; l >= 0; l--)
2476 if (ref->path[l] == '/') {
2477 if (i == ref->nlvl_to - 1)
2478 break;
2479 else
2480 i++;
2481 }
2482
2483 /* compose filename if next level down to target was found */
2484 if (i == ref->nlvl_to - 1 && src_path - src < sizeof(filename)) {
2485 memcpy(filename, src, src_path - src);
2486 filename[src_path - src] = 0;
2487
2488 for (i = 1; i < ref->nlvl_from; i++)
2489 av_strlcat(filename, "../", 1024);
2490
2491 av_strlcat(filename, ref->path + l + 1, 1024);
2492
2493 if (!avio_open2(pb, filename, AVIO_FLAG_READ, int_cb, NULL))
2494 return 0;
2495 }
2496 } else if (use_absolute_path) {
2497 av_log(fc, AV_LOG_WARNING, "Using absolute path on user request, "
2498 "this is a possible security issue\n");
2499 if (!avio_open2(pb, ref->path, AVIO_FLAG_READ, int_cb, NULL))
2500 return 0;
2501 }
2502
2503 return AVERROR(ENOENT);
2504}
2505
2506static void fix_timescale(MOVContext *c, MOVStreamContext *sc)
2507{
2508 if (sc->time_scale <= 0) {
2509 av_log(c->fc, AV_LOG_WARNING, "stream %d, timescale not set\n", sc->ffindex);
2510 sc->time_scale = c->time_scale;
2511 if (sc->time_scale <= 0)
2512 sc->time_scale = 1;
2513 }
2514}
2515
2516static int mov_read_trak(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2517{
2518 AVStream *st;
2519 MOVStreamContext *sc;
2520 int ret;
2521
2522 st = avformat_new_stream(c->fc, NULL);
2523 if (!st) return AVERROR(ENOMEM);
2524 st->id = c->fc->nb_streams;
2525 sc = av_mallocz(sizeof(MOVStreamContext));
2526 if (!sc) return AVERROR(ENOMEM);
2527
2528 st->priv_data = sc;
2529 st->codec->codec_type = AVMEDIA_TYPE_DATA;
2530 sc->ffindex = st->index;
2531
2532 if ((ret = mov_read_default(c, pb, atom)) < 0)
2533 return ret;
2534
2535 /* sanity checks */
2536 if (sc->chunk_count && (!sc->stts_count || !sc->stsc_count ||
2537 (!sc->sample_size && !sc->sample_count))) {
2538 av_log(c->fc, AV_LOG_ERROR, "stream %d, missing mandatory atoms, broken header\n",
2539 st->index);
2540 return 0;
2541 }
2542
2543 fix_timescale(c, sc);
2544
2545 avpriv_set_pts_info(st, 64, 1, sc->time_scale);
2546
2547 mov_build_index(c, st);
2548
2549 if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) {
2550 MOVDref *dref = &sc->drefs[sc->dref_id - 1];
2551 if (mov_open_dref(&sc->pb, c->fc->filename, dref, &c->fc->interrupt_callback,
2552 c->use_absolute_path, c->fc) < 0)
2553 av_log(c->fc, AV_LOG_ERROR,
2554 "stream %d, error opening alias: path='%s', dir='%s', "
2555 "filename='%s', volume='%s', nlvl_from=%d, nlvl_to=%d\n",
2556 st->index, dref->path, dref->dir, dref->filename,
2557 dref->volume, dref->nlvl_from, dref->nlvl_to);
2558 } else {
2559 sc->pb = c->fc->pb;
2560 sc->pb_is_copied = 1;
2561 }
2562
2563 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2564 if (!st->sample_aspect_ratio.num &&
2565 (st->codec->width != sc->width || st->codec->height != sc->height)) {
2566 st->sample_aspect_ratio = av_d2q(((double)st->codec->height * sc->width) /
2567 ((double)st->codec->width * sc->height), INT_MAX);
2568 }
2569
2570#if FF_API_R_FRAME_RATE
2571 if (sc->stts_count == 1 || (sc->stts_count == 2 && sc->stts_data[1].count == 1))
2572 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den,
2573 sc->time_scale, sc->stts_data[0].duration, INT_MAX);
2574#endif
2575 }
2576
2577 // done for ai5q, ai52, ai55, ai1q, ai12 and ai15.
2578 if (!st->codec->extradata_size && st->codec->codec_id == AV_CODEC_ID_H264 &&
2579 TAG_IS_AVCI(st->codec->codec_tag)) {
2580 ret = ff_generate_avci_extradata(st);
2581 if (ret < 0)
2582 return ret;
2583 }
2584
2585 switch (st->codec->codec_id) {
2586#if CONFIG_H261_DECODER
2587 case AV_CODEC_ID_H261:
2588#endif
2589#if CONFIG_H263_DECODER
2590 case AV_CODEC_ID_H263:
2591#endif
2592#if CONFIG_MPEG4_DECODER
2593 case AV_CODEC_ID_MPEG4:
2594#endif
2595 st->codec->width = 0; /* let decoder init width/height */
2596 st->codec->height= 0;
2597 break;
2598 }
2599
2600 /* Do not need those anymore. */
2601 av_freep(&sc->chunk_offsets);
2602 av_freep(&sc->stsc_data);
2603 av_freep(&sc->sample_sizes);
2604 av_freep(&sc->keyframes);
2605 av_freep(&sc->stts_data);
2606 av_freep(&sc->stps_data);
2607 av_freep(&sc->rap_group);
2608
2609 return 0;
2610}
2611
2612static int mov_read_ilst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2613{
2614 int ret;
2615 c->itunes_metadata = 1;
2616 ret = mov_read_default(c, pb, atom);
2617 c->itunes_metadata = 0;
2618 return ret;
2619}
2620
2621static int mov_read_custom_2plus(MOVContext *c, AVIOContext *pb, int size)
2622{
2623 int64_t end = avio_tell(pb) + size;
2624 uint8_t *key = NULL, *val = NULL;
2625 int i;
2626 AVStream *st;
2627 MOVStreamContext *sc;
2628
2629 if (c->fc->nb_streams < 1)
2630 return 0;
2631 st = c->fc->streams[c->fc->nb_streams-1];
2632 sc = st->priv_data;
2633
2634 for (i = 0; i < 2; i++) {
2635 uint8_t **p;
2636 uint32_t len, tag;
2637
2638 if (end - avio_tell(pb) <= 12)
2639 break;
2640
2641 len = avio_rb32(pb);
2642 tag = avio_rl32(pb);
2643 avio_skip(pb, 4); // flags
2644
2645 if (len < 12 || len - 12 > end - avio_tell(pb))
2646 break;
2647 len -= 12;
2648
2649 if (tag == MKTAG('n', 'a', 'm', 'e'))
2650 p = &key;
2651 else if (tag == MKTAG('d', 'a', 't', 'a') && len > 4) {
2652 avio_skip(pb, 4);
2653 len -= 4;
2654 p = &val;
2655 } else
2656 break;
2657
2658 *p = av_malloc(len + 1);
2659 if (!*p)
2660 break;
2661 avio_read(pb, *p, len);
2662 (*p)[len] = 0;
2663 }
2664
2665 if (key && val) {
2666 if (strcmp(key, "iTunSMPB") == 0) {
2667 int priming, remainder, samples;
2668 if(sscanf(val, "%*X %X %X %X", &priming, &remainder, &samples) == 3){
2669 if(priming>0 && priming<16384)
2670 sc->start_pad = priming;
2671 }
2672 }
2673 if (strcmp(key, "cdec") != 0) {
2674 av_dict_set(&c->fc->metadata, key, val,
2675 AV_DICT_DONT_STRDUP_KEY | AV_DICT_DONT_STRDUP_VAL);
2676 key = val = NULL;
2677 }
2678 }
2679
2680 avio_seek(pb, end, SEEK_SET);
2681 av_freep(&key);
2682 av_freep(&val);
2683 return 0;
2684}
2685
2686static int mov_read_custom(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2687{
2688 int64_t end = avio_tell(pb) + atom.size;
2689 uint32_t tag, len;
2690
2691 if (atom.size < 8)
2692 goto fail;
2693
2694 len = avio_rb32(pb);
2695 tag = avio_rl32(pb);
2696
2697 if (len > atom.size)
2698 goto fail;
2699
2700 if (tag == MKTAG('m', 'e', 'a', 'n') && len > 12) {
2701 uint8_t domain[128];
2702 int domain_len;
2703
2704 avio_skip(pb, 4); // flags
2705 len -= 12;
2706
2707 domain_len = avio_get_str(pb, len, domain, sizeof(domain));
2708 avio_skip(pb, len - domain_len);
2709 return mov_read_custom_2plus(c, pb, end - avio_tell(pb));
2710 }
2711
2712fail:
2713 av_log(c->fc, AV_LOG_VERBOSE,
2714 "Unhandled or malformed custom metadata of size %"PRId64"\n", atom.size);
2715 return 0;
2716}
2717
2718static int mov_read_meta(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2719{
2720 while (atom.size > 8) {
2721 uint32_t tag = avio_rl32(pb);
2722 atom.size -= 4;
2723 if (tag == MKTAG('h','d','l','r')) {
2724 avio_seek(pb, -8, SEEK_CUR);
2725 atom.size += 8;
2726 return mov_read_default(c, pb, atom);
2727 }
2728 }
2729 return 0;
2730}
2731
2732static int mov_read_tkhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2733{
2734 int i;
2735 int width;
2736 int height;
2737 int64_t disp_transform[2];
2738 int display_matrix[3][3];
2739 AVStream *st;
2740 MOVStreamContext *sc;
2741 int version;
2742 int flags;
2743
2744 if (c->fc->nb_streams < 1)
2745 return 0;
2746 st = c->fc->streams[c->fc->nb_streams-1];
2747 sc = st->priv_data;
2748
2749 version = avio_r8(pb);
2750 flags = avio_rb24(pb);
2751 st->disposition |= (flags & MOV_TKHD_FLAG_ENABLED) ? AV_DISPOSITION_DEFAULT : 0;
2752
2753 if (version == 1) {
2754 avio_rb64(pb);
2755 avio_rb64(pb);
2756 } else {
2757 avio_rb32(pb); /* creation time */
2758 avio_rb32(pb); /* modification time */
2759 }
2760 st->id = (int)avio_rb32(pb); /* track id (NOT 0 !)*/
2761 avio_rb32(pb); /* reserved */
2762
2763 /* highlevel (considering edits) duration in movie timebase */
2764 (version == 1) ? avio_rb64(pb) : avio_rb32(pb);
2765 avio_rb32(pb); /* reserved */
2766 avio_rb32(pb); /* reserved */
2767
2768 avio_rb16(pb); /* layer */
2769 avio_rb16(pb); /* alternate group */
2770 avio_rb16(pb); /* volume */
2771 avio_rb16(pb); /* reserved */
2772
2773 //read in the display matrix (outlined in ISO 14496-12, Section 6.2.2)
2774 // they're kept in fixed point format through all calculations
2775 // save u,v,z to store the whole matrix in the AV_PKT_DATA_DISPLAYMATRIX
2776 // side data, but the scale factor is not needed to calculate aspect ratio
2777 for (i = 0; i < 3; i++) {
2778 display_matrix[i][0] = avio_rb32(pb); // 16.16 fixed point
2779 display_matrix[i][1] = avio_rb32(pb); // 16.16 fixed point
2780 display_matrix[i][2] = avio_rb32(pb); // 2.30 fixed point
2781 }
2782
2783 width = avio_rb32(pb); // 16.16 fixed point track width
2784 height = avio_rb32(pb); // 16.16 fixed point track height
2785 sc->width = width >> 16;
2786 sc->height = height >> 16;
2787
2788 // save the matrix and add rotate metadata when it is not the default
2789 // identity
2790 if (display_matrix[0][0] != (1 << 16) ||
2791 display_matrix[1][1] != (1 << 16) ||
2792 display_matrix[2][2] != (1 << 30) ||
2793 display_matrix[0][1] || display_matrix[0][2] ||
2794 display_matrix[1][0] || display_matrix[1][2] ||
2795 display_matrix[2][0] || display_matrix[2][1]) {
2796 int i, j;
2797 double rotate;
2798
2799 av_freep(&sc->display_matrix);
2800 sc->display_matrix = av_malloc(sizeof(int32_t) * 9);
2801 if (!sc->display_matrix)
2802 return AVERROR(ENOMEM);
2803
2804 for (i = 0; i < 3; i++)
2805 for (j = 0; j < 3; j++)
2806 sc->display_matrix[i * 3 + j] = display_matrix[j][i];
2807
2808 rotate = av_display_rotation_get(sc->display_matrix);
2809 if (!isnan(rotate)) {
2810 char rotate_buf[64];
2811 rotate = -rotate;
2812 if (rotate < 0) // for backward compatibility
2813 rotate += 360;
2814 snprintf(rotate_buf, sizeof(rotate_buf), "%g", rotate);
2815 av_dict_set(&st->metadata, "rotate", rotate_buf, 0);
2816 }
2817 }
2818
2819 // transform the display width/height according to the matrix
2820 // skip this if the display matrix is the default identity matrix
2821 // or if it is rotating the picture, ex iPhone 3GS
2822 // to keep the same scale, use [width height 1<<16]
2823 if (width && height &&
2824 ((display_matrix[0][0] != 65536 ||
2825 display_matrix[1][1] != 65536) &&
2826 !display_matrix[0][1] &&
2827 !display_matrix[1][0] &&
2828 !display_matrix[2][0] && !display_matrix[2][1])) {
2829 for (i = 0; i < 2; i++)
2830 disp_transform[i] =
2831 (int64_t) width * display_matrix[0][i] +
2832 (int64_t) height * display_matrix[1][i] +
2833 ((int64_t) display_matrix[2][i] << 16);
2834
2835 //sample aspect ratio is new width/height divided by old width/height
2836 st->sample_aspect_ratio = av_d2q(
2837 ((double) disp_transform[0] * height) /
2838 ((double) disp_transform[1] * width), INT_MAX);
2839 }
2840 return 0;
2841}
2842
2843static int mov_read_tfhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2844{
2845 MOVFragment *frag = &c->fragment;
2846 MOVTrackExt *trex = NULL;
f6fa7814 2847 MOVFragmentIndex* index = NULL;
2ba45a60
DM		 2848 int flags, track_id, i;
2849
2850 avio_r8(pb); /* version */
2851 flags = avio_rb24(pb);
2852
2853 track_id = avio_rb32(pb);
2854 if (!track_id)
2855 return AVERROR_INVALIDDATA;
2856 frag->track_id = track_id;
2857 for (i = 0; i < c->trex_count; i++)
2858 if (c->trex_data[i].track_id == frag->track_id) {
2859 trex = &c->trex_data[i];
2860 break;
2861 }
2862 if (!trex) {
2863 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding trex\n");
2864 return AVERROR_INVALIDDATA;
2865 }
f6fa7814
DM		 2866 for (i = 0; i < c->fragment_index_count; i++) {
2867 MOVFragmentIndex* candidate = c->fragment_index_data[i];
2868 if (candidate->track_id == frag->track_id) {
2869 av_log(c->fc, AV_LOG_DEBUG,
2870 "found fragment index for track %u\n", frag->track_id);
2871 index = candidate;
2872 break;
2873 }
2874 }
2ba45a60
DM		 2875
2876 frag->base_data_offset = flags & MOV_TFHD_BASE_DATA_OFFSET ?
2877 avio_rb64(pb) : flags & MOV_TFHD_DEFAULT_BASE_IS_MOOF ?
2878 frag->moof_offset : frag->implicit_offset;
2879 frag->stsd_id = flags & MOV_TFHD_STSD_ID ? avio_rb32(pb) : trex->stsd_id;
2880
2881 frag->duration = flags & MOV_TFHD_DEFAULT_DURATION ?
2882 avio_rb32(pb) : trex->duration;
2883 frag->size = flags & MOV_TFHD_DEFAULT_SIZE ?
2884 avio_rb32(pb) : trex->size;
2885 frag->flags = flags & MOV_TFHD_DEFAULT_FLAGS ?
2886 avio_rb32(pb) : trex->flags;
f6fa7814
DM		 2887 frag->time = AV_NOPTS_VALUE;
2888 if (index) {
2889 int i, found = 0;
2890 for (i = index->current_item; i < index->item_count; i++) {
2891 if (frag->implicit_offset == index->items[i].moof_offset) {
2892 av_log(c->fc, AV_LOG_DEBUG, "found fragment index entry "
2893 "for track %u and moof_offset %"PRId64"\n",
2894 frag->track_id, index->items[i].moof_offset);
2895 frag->time = index->items[i].time;
2896 index->current_item = i + 1;
2897 found = 1;
2898 }
2899 }
2900 if (!found) {
2901 av_log(c->fc, AV_LOG_WARNING, "track %u has a fragment index "
2902 "but it doesn't have an (in-order) entry for moof_offset "
2903 "%"PRId64"\n", frag->track_id, frag->implicit_offset);
2904 }
2905 }
2ba45a60
DM		 2906 av_dlog(c->fc, "frag flags 0x%x\n", frag->flags);
2907 return 0;
2908}
2909
2910static int mov_read_chap(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2911{
2912 c->chapter_track = avio_rb32(pb);
2913 return 0;
2914}
2915
2916static int mov_read_trex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2917{
2918 MOVTrackExt *trex;
2919 int err;
2920
2921 if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data))
2922 return AVERROR_INVALIDDATA;
2923 if ((err = av_reallocp_array(&c->trex_data, c->trex_count + 1,
2924 sizeof(*c->trex_data))) < 0) {
2925 c->trex_count = 0;
2926 return err;
2927 }
2928
2929 c->fc->duration = AV_NOPTS_VALUE; // the duration from mvhd is not representing the whole file when fragments are used.
2930
2931 trex = &c->trex_data[c->trex_count++];
2932 avio_r8(pb); /* version */
2933 avio_rb24(pb); /* flags */
2934 trex->track_id = avio_rb32(pb);
2935 trex->stsd_id = avio_rb32(pb);
2936 trex->duration = avio_rb32(pb);
2937 trex->size = avio_rb32(pb);
2938 trex->flags = avio_rb32(pb);
2939 return 0;
2940}
2941
f6fa7814
DM		 2942static int mov_read_tfdt(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2943{
2944 MOVFragment *frag = &c->fragment;
2945 AVStream *st = NULL;
2946 MOVStreamContext *sc;
2947 int version, i;
2948
2949 for (i = 0; i < c->fc->nb_streams; i++) {
2950 if (c->fc->streams[i]->id == frag->track_id) {
2951 st = c->fc->streams[i];
2952 break;
2953 }
2954 }
2955 if (!st) {
2956 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id);
2957 return AVERROR_INVALIDDATA;
2958 }
2959 sc = st->priv_data;
2960 if (sc->pseudo_stream_id + 1 != frag->stsd_id)
2961 return 0;
2962 version = avio_r8(pb);
2963 avio_rb24(pb); /* flags */
2964 if (version) {
2965 sc->track_end = avio_rb64(pb);
2966 } else {
2967 sc->track_end = avio_rb32(pb);
2968 }
2969 return 0;
2970}
2971
2ba45a60
DM		 2972static int mov_read_trun(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2973{
2974 MOVFragment *frag = &c->fragment;
2975 AVStream *st = NULL;
2976 MOVStreamContext *sc;
2977 MOVStts *ctts_data;
2978 uint64_t offset;
2979 int64_t dts;
2980 int data_offset = 0;
2981 unsigned entries, first_sample_flags = frag->flags;
2982 int flags, distance, i, found_keyframe = 0, err;
2983
2984 for (i = 0; i < c->fc->nb_streams; i++) {
2985 if (c->fc->streams[i]->id == frag->track_id) {
2986 st = c->fc->streams[i];
2987 break;
2988 }
2989 }
2990 if (!st) {
2991 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id);
2992 return AVERROR_INVALIDDATA;
2993 }
2994 sc = st->priv_data;
2995 if (sc->pseudo_stream_id+1 != frag->stsd_id && sc->pseudo_stream_id != -1)
2996 return 0;
2997 avio_r8(pb); /* version */
2998 flags = avio_rb24(pb);
2999 entries = avio_rb32(pb);
3000 av_dlog(c->fc, "flags 0x%x entries %d\n", flags, entries);
3001
3002 /* Always assume the presence of composition time offsets.
3003 * Without this assumption, for instance, we cannot deal with a track in fragmented movies that meet the following.
3004 * 1) in the initial movie, there are no samples.
3005 * 2) in the first movie fragment, there is only one sample without composition time offset.
3006 * 3) in the subsequent movie fragments, there are samples with composition time offset. */
3007 if (!sc->ctts_count && sc->sample_count)
3008 {
3009 /* Complement ctts table if moov atom doesn't have ctts atom. */
3010 ctts_data = av_realloc(NULL, sizeof(*sc->ctts_data));
3011 if (!ctts_data)
3012 return AVERROR(ENOMEM);
3013 sc->ctts_data = ctts_data;
3014 sc->ctts_data[sc->ctts_count].count = sc->sample_count;
3015 sc->ctts_data[sc->ctts_count].duration = 0;
3016 sc->ctts_count++;
3017 }
3018 if ((uint64_t)entries+sc->ctts_count >= UINT_MAX/sizeof(*sc->ctts_data))
3019 return AVERROR_INVALIDDATA;
3020 if ((err = av_reallocp_array(&sc->ctts_data, entries + sc->ctts_count,
3021 sizeof(*sc->ctts_data))) < 0) {
3022 sc->ctts_count = 0;
3023 return err;
3024 }
3025 if (flags & MOV_TRUN_DATA_OFFSET) data_offset = avio_rb32(pb);
3026 if (flags & MOV_TRUN_FIRST_SAMPLE_FLAGS) first_sample_flags = avio_rb32(pb);
3027 dts = sc->track_end - sc->time_offset;
3028 offset = frag->base_data_offset + data_offset;
3029 distance = 0;
3030 av_dlog(c->fc, "first sample flags 0x%x\n", first_sample_flags);
3031 for (i = 0; i < entries && !pb->eof_reached; i++) {
3032 unsigned sample_size = frag->size;
3033 int sample_flags = i ? frag->flags : first_sample_flags;
3034 unsigned sample_duration = frag->duration;
3035 int keyframe = 0;
3036
3037 if (flags & MOV_TRUN_SAMPLE_DURATION) sample_duration = avio_rb32(pb);
3038 if (flags & MOV_TRUN_SAMPLE_SIZE) sample_size = avio_rb32(pb);
3039 if (flags & MOV_TRUN_SAMPLE_FLAGS) sample_flags = avio_rb32(pb);
3040 sc->ctts_data[sc->ctts_count].count = 1;
3041 sc->ctts_data[sc->ctts_count].duration = (flags & MOV_TRUN_SAMPLE_CTS) ?
3042 avio_rb32(pb) : 0;
3043 mov_update_dts_shift(sc, sc->ctts_data[sc->ctts_count].duration);
f6fa7814
DM		 3044 if (frag->time != AV_NOPTS_VALUE) {
3045 if (c->use_mfra_for == FF_MOV_FLAG_MFRA_PTS) {
3046 int64_t pts = frag->time;
3047 av_log(c->fc, AV_LOG_DEBUG, "found frag time %"PRId64
3048 " sc->dts_shift %d ctts.duration %d"
3049 " sc->time_offset %"PRId64" flags & MOV_TRUN_SAMPLE_CTS %d\n", pts,
3050 sc->dts_shift, sc->ctts_data[sc->ctts_count].duration,
3051 sc->time_offset, flags & MOV_TRUN_SAMPLE_CTS);
3052 dts = pts - sc->dts_shift;
3053 if (flags & MOV_TRUN_SAMPLE_CTS) {
3054 dts -= sc->ctts_data[sc->ctts_count].duration;
3055 } else {
3056 dts -= sc->time_offset;
3057 }
3058 av_log(c->fc, AV_LOG_DEBUG, "calculated into dts %"PRId64"\n", dts);
3059 } else {
3060 dts = frag->time;
3061 av_log(c->fc, AV_LOG_DEBUG, "found frag time %"PRId64
3062 ", using it for dts\n", dts);
3063 }
3064 frag->time = AV_NOPTS_VALUE;
3065 }
2ba45a60
DM		 3066 sc->ctts_count++;
3067 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
3068 keyframe = 1;
3069 else if (!found_keyframe)
3070 keyframe = found_keyframe =
3071 !(sample_flags & (MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC |
3072 MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES));
3073 if (keyframe)
3074 distance = 0;
3075 av_add_index_entry(st, offset, dts, sample_size, distance,
3076 keyframe ? AVINDEX_KEYFRAME : 0);
3077 av_dlog(c->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
3078 "size %d, distance %d, keyframe %d\n", st->index, sc->sample_count+i,
3079 offset, dts, sample_size, distance, keyframe);
3080 distance++;
3081 dts += sample_duration;
3082 offset += sample_size;
3083 sc->data_size += sample_size;
3084 sc->duration_for_fps += sample_duration;
3085 sc->nb_frames_for_fps ++;
3086 }
3087
3088 if (pb->eof_reached)
3089 return AVERROR_EOF;
3090
3091 frag->implicit_offset = offset;
3092 st->duration = sc->track_end = dts + sc->time_offset;
3093 return 0;
3094}
3095
3096/* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
3097/* like the files created with Adobe Premiere 5.0, for samples see */
3098/* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
3099static int mov_read_wide(MOVContext *c, AVIOContext *pb, MOVAtom atom)
3100{
3101 int err;
3102
3103 if (atom.size < 8)
3104 return 0; /* continue */
3105 if (avio_rb32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
3106 avio_skip(pb, atom.size - 4);
3107 return 0;
3108 }
3109 atom.type = avio_rl32(pb);
3110 atom.size -= 8;
3111 if (atom.type != MKTAG('m','d','a','t')) {
3112 avio_skip(pb, atom.size);
3113 return 0;
3114 }
3115 err = mov_read_mdat(c, pb, atom);
3116 return err;
3117}
3118
3119static int mov_read_cmov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
3120{
3121#if CONFIG_ZLIB
3122 AVIOContext ctx;
3123 uint8_t *cmov_data;
3124 uint8_t *moov_data; /* uncompressed data */
3125 long cmov_len, moov_len;
3126 int ret = -1;
3127
3128 avio_rb32(pb); /* dcom atom */
3129 if (avio_rl32(pb) != MKTAG('d','c','o','m'))
3130 return AVERROR_INVALIDDATA;
3131 if (avio_rl32(pb) != MKTAG('z','l','i','b')) {
3132 av_log(c->fc, AV_LOG_ERROR, "unknown compression for cmov atom !\n");
3133 return AVERROR_INVALIDDATA;
3134 }
3135 avio_rb32(pb); /* cmvd atom */
3136 if (avio_rl32(pb) != MKTAG('c','m','v','d'))
3137 return AVERROR_INVALIDDATA;
3138 moov_len = avio_rb32(pb); /* uncompressed size */
3139 cmov_len = atom.size - 6 * 4;
3140
3141 cmov_data = av_malloc(cmov_len);
3142 if (!cmov_data)
3143 return AVERROR(ENOMEM);
3144 moov_data = av_malloc(moov_len);
3145 if (!moov_data) {
3146 av_free(cmov_data);
3147 return AVERROR(ENOMEM);
3148 }
3149 avio_read(pb, cmov_data, cmov_len);
3150 if (uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
3151 goto free_and_return;
3152 if (ffio_init_context(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
3153 goto free_and_return;
3154 atom.type = MKTAG('m','o','o','v');
3155 atom.size = moov_len;
3156 ret = mov_read_default(c, &ctx, atom);
3157free_and_return:
3158 av_free(moov_data);
3159 av_free(cmov_data);
3160 return ret;
3161#else
3162 av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
3163 return AVERROR(ENOSYS);
3164#endif
3165}
3166
3167/* edit list atom */
3168static int mov_read_elst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
3169{
3170 MOVStreamContext *sc;
3171 int i, edit_count, version, edit_start_index = 0;
3172 int unsupported = 0;
3173
3174 if (c->fc->nb_streams < 1 || c->ignore_editlist)
3175 return 0;
3176 sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
3177
3178 version = avio_r8(pb); /* version */
3179 avio_rb24(pb); /* flags */
3180 edit_count = avio_rb32(pb); /* entries */
3181
3182 if ((uint64_t)edit_count*12+8 > atom.size)
3183 return AVERROR_INVALIDDATA;
3184
3185 av_dlog(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, edit_count);
3186 for (i=0; i<edit_count; i++){
3187 int64_t time;
3188 int64_t duration;
3189 int rate;
3190 if (version == 1) {
3191 duration = avio_rb64(pb);
3192 time = avio_rb64(pb);
3193 } else {
3194 duration = avio_rb32(pb); /* segment duration */
3195 time = (int32_t)avio_rb32(pb); /* media time */
3196 }
3197 rate = avio_rb32(pb);
3198 if (i == 0 && time == -1) {
3199 sc->empty_duration = duration;
3200 edit_start_index = 1;
3201 } else if (i == edit_start_index && time >= 0)
3202 sc->start_time = time;
3203 else
3204 unsupported = 1;
3205
3206 av_dlog(c->fc, "duration=%"PRId64" time=%"PRId64" rate=%f\n",
3207 duration, time, rate / 65536.0);
3208 }
3209
3210 if (unsupported)
3211 av_log(c->fc, AV_LOG_WARNING, "multiple edit list entries, "
3212 "a/v desync might occur, patch welcome\n");
3213
3214 return 0;
3215}
3216
3217static int mov_read_tmcd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
3218{
3219 MOVStreamContext *sc;
3220
3221 if (c->fc->nb_streams < 1)
3222 return AVERROR_INVALIDDATA;
3223 sc = c->fc->streams[c->fc->nb_streams - 1]->priv_data;
3224 sc->timecode_track = avio_rb32(pb);
3225 return 0;
3226}
3227
3228static int mov_read_uuid(MOVContext *c, AVIOContext *pb, MOVAtom atom)
3229{
3230 int ret;
3231 uint8_t uuid[16];
3232 static const uint8_t uuid_isml_manifest[] = {
3233 0xa5, 0xd4, 0x0b, 0x30, 0xe8, 0x14, 0x11, 0xdd,
3234 0xba, 0x2f, 0x08, 0x00, 0x20, 0x0c, 0x9a, 0x66
3235 };
3236
3237 if (atom.size < sizeof(uuid) || atom.size == INT64_MAX)
3238 return AVERROR_INVALIDDATA;
3239
3240 ret = avio_read(pb, uuid, sizeof(uuid));
3241 if (ret < 0) {
3242 return ret;
3243 } else if (ret != sizeof(uuid)) {
3244 return AVERROR_INVALIDDATA;
3245 }
3246 if (!memcmp(uuid, uuid_isml_manifest, sizeof(uuid))) {
3247 uint8_t *buffer, *ptr;
3248 char *endptr;
3249 size_t len = atom.size - sizeof(uuid);
3250
3251 if (len < 4) {
3252 return AVERROR_INVALIDDATA;
3253 }
3254 ret = avio_skip(pb, 4); // zeroes
3255 len -= 4;
3256
3257 buffer = av_mallocz(len + 1);
3258 if (!buffer) {
3259 return AVERROR(ENOMEM);
3260 }
3261 ret = avio_read(pb, buffer, len);
3262 if (ret < 0) {
3263 av_free(buffer);
3264 return ret;
3265 } else if (ret != len) {
3266 av_free(buffer);
3267 return AVERROR_INVALIDDATA;
3268 }
3269
3270 ptr = buffer;
3271 while ((ptr = av_stristr(ptr, "systemBitrate=\""))) {
3272 ptr += sizeof("systemBitrate=\"") - 1;
3273 c->bitrates_count++;
3274 c->bitrates = av_realloc_f(c->bitrates, c->bitrates_count, sizeof(*c->bitrates));
3275 if (!c->bitrates) {
3276 c->bitrates_count = 0;
3277 av_free(buffer);
3278 return AVERROR(ENOMEM);
3279 }
3280 errno = 0;
3281 ret = strtol(ptr, &endptr, 10);
3282 if (ret < 0 || errno || *endptr != '"') {
3283 c->bitrates[c->bitrates_count - 1] = 0;
3284 } else {
3285 c->bitrates[c->bitrates_count - 1] = ret;
3286 }
3287 }
3288
3289 av_free(buffer);
3290 }
3291 return 0;
3292}
3293
f6fa7814
DM		 3294static int mov_read_free(MOVContext *c, AVIOContext *pb, MOVAtom atom)
3295{
3296 int ret;
3297 uint8_t content[16];
3298
3299 if (atom.size < 8)
3300 return 0;
3301
3302 ret = avio_read(pb, content, FFMIN(sizeof(content), atom.size));
3303 if (ret < 0)
3304 return ret;
3305
3306 if ( !c->found_moov
3307 && !c->found_mdat
3308 && !memcmp(content, "Anevia\x1A\x1A", 8)
3309 && c->use_mfra_for == FF_MOV_FLAG_MFRA_AUTO) {
3310 c->use_mfra_for = FF_MOV_FLAG_MFRA_PTS;
3311 }
3312
3313 return 0;
3314}
3315
2ba45a60
DM		 3316static const MOVParseTableEntry mov_default_parse_table[] = {
3317{ MKTAG('A','C','L','R'), mov_read_avid },
3318{ MKTAG('A','P','R','G'), mov_read_avid },
3319{ MKTAG('A','A','L','P'), mov_read_avid },
3320{ MKTAG('A','R','E','S'), mov_read_ares },
3321{ MKTAG('a','v','s','s'), mov_read_avss },
3322{ MKTAG('c','h','p','l'), mov_read_chpl },
3323{ MKTAG('c','o','6','4'), mov_read_stco },
f6fa7814 3324{ MKTAG('c','o','l','r'), mov_read_colr },
2ba45a60
DM		 3325{ MKTAG('c','t','t','s'), mov_read_ctts }, /* composition time to sample */
3326{ MKTAG('d','i','n','f'), mov_read_default },
3327{ MKTAG('d','r','e','f'), mov_read_dref },
3328{ MKTAG('e','d','t','s'), mov_read_default },
3329{ MKTAG('e','l','s','t'), mov_read_elst },
3330{ MKTAG('e','n','d','a'), mov_read_enda },
3331{ MKTAG('f','i','e','l'), mov_read_fiel },
3332{ MKTAG('f','t','y','p'), mov_read_ftyp },
3333{ MKTAG('g','l','b','l'), mov_read_glbl },
3334{ MKTAG('h','d','l','r'), mov_read_hdlr },
3335{ MKTAG('i','l','s','t'), mov_read_ilst },
3336{ MKTAG('j','p','2','h'), mov_read_jp2h },
3337{ MKTAG('m','d','a','t'), mov_read_mdat },
3338{ MKTAG('m','d','h','d'), mov_read_mdhd },
3339{ MKTAG('m','d','i','a'), mov_read_default },
3340{ MKTAG('m','e','t','a'), mov_read_meta },
3341{ MKTAG('m','i','n','f'), mov_read_default },
3342{ MKTAG('m','o','o','f'), mov_read_moof },
3343{ MKTAG('m','o','o','v'), mov_read_moov },
3344{ MKTAG('m','v','e','x'), mov_read_default },
3345{ MKTAG('m','v','h','d'), mov_read_mvhd },
3346{ MKTAG('S','M','I',' '), mov_read_svq3 },
3347{ MKTAG('a','l','a','c'), mov_read_alac }, /* alac specific atom */
3348{ MKTAG('a','v','c','C'), mov_read_glbl },
3349{ MKTAG('p','a','s','p'), mov_read_pasp },
3350{ MKTAG('s','t','b','l'), mov_read_default },
3351{ MKTAG('s','t','c','o'), mov_read_stco },
3352{ MKTAG('s','t','p','s'), mov_read_stps },
3353{ MKTAG('s','t','r','f'), mov_read_strf },
3354{ MKTAG('s','t','s','c'), mov_read_stsc },
3355{ MKTAG('s','t','s','d'), mov_read_stsd }, /* sample description */
3356{ MKTAG('s','t','s','s'), mov_read_stss }, /* sync sample */
3357{ MKTAG('s','t','s','z'), mov_read_stsz }, /* sample size */
3358{ MKTAG('s','t','t','s'), mov_read_stts },
3359{ MKTAG('s','t','z','2'), mov_read_stsz }, /* compact sample size */
3360{ MKTAG('t','k','h','d'), mov_read_tkhd }, /* track header */
f6fa7814 3361{ MKTAG('t','f','d','t'), mov_read_tfdt },
2ba45a60
DM		 3362{ MKTAG('t','f','h','d'), mov_read_tfhd }, /* track fragment header */
3363{ MKTAG('t','r','a','k'), mov_read_trak },
3364{ MKTAG('t','r','a','f'), mov_read_default },
3365{ MKTAG('t','r','e','f'), mov_read_default },
3366{ MKTAG('t','m','c','d'), mov_read_tmcd },
3367{ MKTAG('c','h','a','p'), mov_read_chap },
3368{ MKTAG('t','r','e','x'), mov_read_trex },
3369{ MKTAG('t','r','u','n'), mov_read_trun },
3370{ MKTAG('u','d','t','a'), mov_read_default },
3371{ MKTAG('w','a','v','e'), mov_read_wave },
3372{ MKTAG('e','s','d','s'), mov_read_esds },
3373{ MKTAG('d','a','c','3'), mov_read_dac3 }, /* AC-3 info */
3374{ MKTAG('d','e','c','3'), mov_read_dec3 }, /* EAC-3 info */
3375{ MKTAG('w','i','d','e'), mov_read_wide }, /* place holder */
3376{ MKTAG('w','f','e','x'), mov_read_wfex },
3377{ MKTAG('c','m','o','v'), mov_read_cmov },
3378{ MKTAG('c','h','a','n'), mov_read_chan }, /* channel layout */
3379{ MKTAG('d','v','c','1'), mov_read_dvc1 },
3380{ MKTAG('s','b','g','p'), mov_read_sbgp },
3381{ MKTAG('h','v','c','C'), mov_read_glbl },
3382{ MKTAG('u','u','i','d'), mov_read_uuid },
3383{ MKTAG('C','i','n', 0x8e), mov_read_targa_y216 },
f6fa7814 3384{ MKTAG('f','r','e','e'), mov_read_free },
2ba45a60
DM		 3385{ MKTAG('-','-','-','-'), mov_read_custom },
3386{ 0, NULL }
3387};
3388
3389static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom)
3390{
3391 int64_t total_size = 0;
3392 MOVAtom a;
3393 int i;
3394
092a9121
DM		 3395 if (c->atom_depth > 10) {
3396 av_log(c->fc, AV_LOG_ERROR, "Atoms too deeply nested\n");
3397 return AVERROR_INVALIDDATA;
3398 }
3399 c->atom_depth ++;
3400
2ba45a60
DM		 3401 if (atom.size < 0)
3402 atom.size = INT64_MAX;
3403 while (total_size + 8 <= atom.size && !avio_feof(pb)) {
3404 int (*parse)(MOVContext*, AVIOContext*, MOVAtom) = NULL;
3405 a.size = atom.size;
3406 a.type=0;
3407 if (atom.size >= 8) {
3408 a.size = avio_rb32(pb);
3409 a.type = avio_rl32(pb);
3410 if (a.type == MKTAG('f','r','e','e') &&
3411 a.size >= 8 &&
3412 c->moov_retry) {
3413 uint8_t buf[8];
3414 uint32_t *type = (uint32_t *)buf + 1;
3415 avio_read(pb, buf, 8);
3416 avio_seek(pb, -8, SEEK_CUR);
3417 if (*type == MKTAG('m','v','h','d') ||
3418 *type == MKTAG('c','m','o','v')) {
3419 av_log(c->fc, AV_LOG_ERROR, "Detected moov in a free atom.\n");
3420 a.type = MKTAG('m','o','o','v');
3421 }
3422 }
3423 if (atom.type != MKTAG('r','o','o','t') &&
3424 atom.type != MKTAG('m','o','o','v'))
3425 {
3426 if (a.type == MKTAG('t','r','a','k') || a.type == MKTAG('m','d','a','t'))
3427 {
3428 av_log(c->fc, AV_LOG_ERROR, "Broken file, trak/mdat not at top-level\n");
3429 avio_skip(pb, -8);
092a9121 3430 c->atom_depth --;
2ba45a60
DM		 3431 return 0;
3432 }
3433 }
3434 total_size += 8;
0e279ba6 3435 if (a.size == 1 && total_size + 8 <= atom.size) { /* 64 bit extended size */
2ba45a60
DM		 3436 a.size = avio_rb64(pb) - 8;
3437 total_size += 8;
3438 }
3439 }
3440 av_dlog(c->fc, "type: %08x '%.4s' parent:'%.4s' sz: %"PRId64" %"PRId64" %"PRId64"\n",
3441 a.type, (char*)&a.type, (char*)&atom.type, a.size, total_size, atom.size);
3442 if (a.size == 0) {
3443 a.size = atom.size - total_size + 8;
3444 }
3445 a.size -= 8;
3446 if (a.size < 0)
3447 break;
3448 a.size = FFMIN(a.size, atom.size - total_size);
3449
3450 for (i = 0; mov_default_parse_table[i].type; i++)
3451 if (mov_default_parse_table[i].type == a.type) {
3452 parse = mov_default_parse_table[i].parse;
3453 break;
3454 }
3455
3456 // container is user data
3457 if (!parse && (atom.type == MKTAG('u','d','t','a') ||
3458 atom.type == MKTAG('i','l','s','t')))
3459 parse = mov_read_udta_string;
3460
3461 if (!parse) { /* skip leaf atoms data */
3462 avio_skip(pb, a.size);
3463 } else {
3464 int64_t start_pos = avio_tell(pb);
3465 int64_t left;
3466 int err = parse(c, pb, a);
092a9121
DM		 3467 if (err < 0) {
3468 c->atom_depth --;
2ba45a60 3469 return err;
092a9121 3470 }
2ba45a60
DM		 3471 if (c->found_moov && c->found_mdat &&
3472 ((!pb->seekable || c->fc->flags & AVFMT_FLAG_IGNIDX) ||
3473 start_pos + a.size == avio_size(pb))) {
3474 if (!pb->seekable || c->fc->flags & AVFMT_FLAG_IGNIDX)
3475 c->next_root_atom = start_pos + a.size;
092a9121 3476 c->atom_depth --;
2ba45a60
DM		 3477 return 0;
3478 }
3479 left = a.size - avio_tell(pb) + start_pos;
3480 if (left > 0) /* skip garbage at atom end */
3481 avio_skip(pb, left);
3482 else if (left < 0) {
3483 av_log(c->fc, AV_LOG_WARNING,
3484 "overread end of atom '%.4s' by %"PRId64" bytes\n",
3485 (char*)&a.type, -left);
3486 avio_seek(pb, left, SEEK_CUR);
3487 }
3488 }
3489
3490 total_size += a.size;
3491 }
3492
3493 if (total_size < atom.size && atom.size < 0x7ffff)
3494 avio_skip(pb, atom.size - total_size);
3495
092a9121 3496 c->atom_depth --;
2ba45a60
DM		 3497 return 0;
3498}
3499
3500static int mov_probe(AVProbeData *p)
3501{
3502 int64_t offset;
3503 uint32_t tag;
3504 int score = 0;
3505 int moov_offset = -1;
3506
3507 /* check file header */
3508 offset = 0;
3509 for (;;) {
3510 /* ignore invalid offset */
3511 if ((offset + 8) > (unsigned int)p->buf_size)
3512 break;
3513 tag = AV_RL32(p->buf + offset + 4);
3514 switch(tag) {
3515 /* check for obvious tags */
3516 case MKTAG('m','o','o','v'):
3517 moov_offset = offset + 4;
3518 case MKTAG('m','d','a','t'):
3519 case MKTAG('p','n','o','t'): /* detect movs with preview pics like ew.mov and april.mov */
3520 case MKTAG('u','d','t','a'): /* Packet Video PVAuthor adds this and a lot of more junk */
3521 case MKTAG('f','t','y','p'):
3522 if (AV_RB32(p->buf+offset) < 8 &&
3523 (AV_RB32(p->buf+offset) != 1 ||
3524 offset + 12 > (unsigned int)p->buf_size ||
3525 AV_RB64(p->buf+offset + 8) == 0)) {
3526 score = FFMAX(score, AVPROBE_SCORE_EXTENSION);
3527 } else if (tag == MKTAG('f','t','y','p') &&
3528 AV_RL32(p->buf + offset + 8) == MKTAG('j','p','2',' ')) {
3529 score = FFMAX(score, 5);
3530 } else {
3531 score = AVPROBE_SCORE_MAX;
3532 }
3533 offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset;
3534 break;
3535 /* those are more common words, so rate then a bit less */
3536 case MKTAG('e','d','i','w'): /* xdcam files have reverted first tags */
3537 case MKTAG('w','i','d','e'):
3538 case MKTAG('f','r','e','e'):
3539 case MKTAG('j','u','n','k'):
3540 case MKTAG('p','i','c','t'):
3541 score = FFMAX(score, AVPROBE_SCORE_MAX - 5);
3542 offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset;
3543 break;
3544 case MKTAG(0x82,0x82,0x7f,0x7d):
3545 case MKTAG('s','k','i','p'):
3546 case MKTAG('u','u','i','d'):
3547 case MKTAG('p','r','f','l'):
3548 /* if we only find those cause probedata is too small at least rate them */
3549 score = FFMAX(score, AVPROBE_SCORE_EXTENSION);
3550 offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset;
3551 break;
3552 default:
3553 offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset;
3554 }
3555 }
3556 if(score > AVPROBE_SCORE_MAX - 50 && moov_offset != -1) {
3557 /* moov atom in the header - we should make sure that this is not a
3558 * MOV-packed MPEG-PS */
3559 offset = moov_offset;
3560
3561 while(offset < (p->buf_size - 16)){ /* Sufficient space */
3562 /* We found an actual hdlr atom */
3563 if(AV_RL32(p->buf + offset ) == MKTAG('h','d','l','r') &&
3564 AV_RL32(p->buf + offset + 8) == MKTAG('m','h','l','r') &&
3565 AV_RL32(p->buf + offset + 12) == MKTAG('M','P','E','G')){
3566 av_log(NULL, AV_LOG_WARNING, "Found media data tag MPEG indicating this is a MOV-packed MPEG-PS.\n");
3567 /* We found a media handler reference atom describing an
3568 * MPEG-PS-in-MOV, return a
3569 * low score to force expanding the probe window until
3570 * mpegps_probe finds what it needs */
3571 return 5;
3572 }else
3573 /* Keep looking */
3574 offset+=2;
3575 }
3576 }
3577
3578 return score;
3579}
3580
3581// must be done after parsing all trak because there's no order requirement
3582static void mov_read_chapters(AVFormatContext *s)
3583{
3584 MOVContext *mov = s->priv_data;
3585 AVStream *st = NULL;
3586 MOVStreamContext *sc;
3587 int64_t cur_pos;
3588 int i;
3589
3590 for (i = 0; i < s->nb_streams; i++)
3591 if (s->streams[i]->id == mov->chapter_track) {
3592 st = s->streams[i];
3593 break;
3594 }
3595 if (!st) {
3596 av_log(s, AV_LOG_ERROR, "Referenced QT chapter track not found\n");
3597 return;
3598 }
3599
3600 st->discard = AVDISCARD_ALL;
3601 sc = st->priv_data;
3602 cur_pos = avio_tell(sc->pb);
3603
3604 for (i = 0; i < st->nb_index_entries; i++) {
3605 AVIndexEntry *sample = &st->index_entries[i];
3606 int64_t end = i+1 < st->nb_index_entries ? st->index_entries[i+1].timestamp : st->duration;
3607 uint8_t *title;
3608 uint16_t ch;
3609 int len, title_len;
3610
3611 if (end < sample->timestamp) {
3612 av_log(s, AV_LOG_WARNING, "ignoring stream duration which is shorter than chapters\n");
3613 end = AV_NOPTS_VALUE;
3614 }
3615
3616 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
3617 av_log(s, AV_LOG_ERROR, "Chapter %d not found in file\n", i);
3618 goto finish;
3619 }
3620
3621 // the first two bytes are the length of the title
3622 len = avio_rb16(sc->pb);
3623 if (len > sample->size-2)
3624 continue;
3625 title_len = 2*len + 1;
3626 if (!(title = av_mallocz(title_len)))
3627 goto finish;
3628
3629 // The samples could theoretically be in any encoding if there's an encd
3630 // atom following, but in practice are only utf-8 or utf-16, distinguished
3631 // instead by the presence of a BOM
3632 if (!len) {
3633 title[0] = 0;
3634 } else {
3635 ch = avio_rb16(sc->pb);
3636 if (ch == 0xfeff)
3637 avio_get_str16be(sc->pb, len, title, title_len);
3638 else if (ch == 0xfffe)
3639 avio_get_str16le(sc->pb, len, title, title_len);
3640 else {
3641 AV_WB16(title, ch);
3642 if (len == 1 || len == 2)
3643 title[len] = 0;
3644 else
3645 avio_get_str(sc->pb, INT_MAX, title + 2, len - 1);
3646 }
3647 }
3648
3649 avpriv_new_chapter(s, i, st->time_base, sample->timestamp, end, title);
3650 av_freep(&title);
3651 }
3652finish:
3653 avio_seek(sc->pb, cur_pos, SEEK_SET);
3654}
3655
3656static int parse_timecode_in_framenum_format(AVFormatContext *s, AVStream *st,
3657 uint32_t value, int flags)
3658{
3659 AVTimecode tc;
3660 char buf[AV_TIMECODE_STR_SIZE];
3661 AVRational rate = {st->codec->time_base.den,
3662 st->codec->time_base.num};
3663 int ret = av_timecode_init(&tc, rate, flags, 0, s);
3664 if (ret < 0)
3665 return ret;
3666 av_dict_set(&st->metadata, "timecode",
3667 av_timecode_make_string(&tc, buf, value), 0);
3668 return 0;
3669}
3670
3671static int mov_read_timecode_track(AVFormatContext *s, AVStream *st)
3672{
3673 MOVStreamContext *sc = st->priv_data;
3674 int flags = 0;
3675 int64_t cur_pos = avio_tell(sc->pb);
3676 uint32_t value;
3677
3678 if (!st->nb_index_entries)
3679 return -1;
3680
3681 avio_seek(sc->pb, st->index_entries->pos, SEEK_SET);
3682 value = avio_rb32(s->pb);
3683
3684 if (sc->tmcd_flags & 0x0001) flags |= AV_TIMECODE_FLAG_DROPFRAME;
3685 if (sc->tmcd_flags & 0x0002) flags |= AV_TIMECODE_FLAG_24HOURSMAX;
3686 if (sc->tmcd_flags & 0x0004) flags |= AV_TIMECODE_FLAG_ALLOWNEGATIVE;
3687
3688 /* Assume Counter flag is set to 1 in tmcd track (even though it is likely
3689 * not the case) and thus assume "frame number format" instead of QT one.
3690 * No sample with tmcd track can be found with a QT timecode at the moment,
3691 * despite what the tmcd track "suggests" (Counter flag set to 0 means QT
3692 * format). */
3693 parse_timecode_in_framenum_format(s, st, value, flags);
3694
3695 avio_seek(sc->pb, cur_pos, SEEK_SET);
3696 return 0;
3697}
3698
3699static int mov_read_close(AVFormatContext *s)
3700{
3701 MOVContext *mov = s->priv_data;
3702 int i, j;
3703
3704 for (i = 0; i < s->nb_streams; i++) {
3705 AVStream *st = s->streams[i];
3706 MOVStreamContext *sc = st->priv_data;
3707
3708 av_freep(&sc->ctts_data);
3709 for (j = 0; j < sc->drefs_count; j++) {
3710 av_freep(&sc->drefs[j].path);
3711 av_freep(&sc->drefs[j].dir);
3712 }
3713 av_freep(&sc->drefs);
3714
3715 sc->drefs_count = 0;
3716
3717 if (!sc->pb_is_copied)
3718 avio_close(sc->pb);
3719
3720 sc->pb = NULL;
3721 av_freep(&sc->chunk_offsets);
3722 av_freep(&sc->stsc_data);
3723 av_freep(&sc->sample_sizes);
3724 av_freep(&sc->keyframes);
3725 av_freep(&sc->stts_data);
3726 av_freep(&sc->stps_data);
3727 av_freep(&sc->rap_group);
3728 av_freep(&sc->display_matrix);
3729 }
3730
3731 if (mov->dv_demux) {
3732 avformat_free_context(mov->dv_fctx);
3733 mov->dv_fctx = NULL;
3734 }
3735
3736 av_freep(&mov->trex_data);
3737 av_freep(&mov->bitrates);
3738
f6fa7814
DM		 3739 for (i = 0; i < mov->fragment_index_count; i++) {
3740 MOVFragmentIndex* index = mov->fragment_index_data[i];
3741 av_freep(&index->items);
3742 av_freep(&mov->fragment_index_data[i]);
3743 }
3744 av_freep(&mov->fragment_index_data);
3745
2ba45a60
DM		 3746 return 0;
3747}
3748
3749static int tmcd_is_referenced(AVFormatContext *s, int tmcd_id)
3750{
3751 int i;
3752
3753 for (i = 0; i < s->nb_streams; i++) {
3754 AVStream *st = s->streams[i];
3755 MOVStreamContext *sc = st->priv_data;
3756
3757 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
3758 sc->timecode_track == tmcd_id)
3759 return 1;
3760 }
3761 return 0;
3762}
3763
3764/* look for a tmcd track not referenced by any video track, and export it globally */
3765static void export_orphan_timecode(AVFormatContext *s)
3766{
3767 int i;
3768
3769 for (i = 0; i < s->nb_streams; i++) {
3770 AVStream *st = s->streams[i];
3771
3772 if (st->codec->codec_tag == MKTAG('t','m','c','d') &&
3773 !tmcd_is_referenced(s, i + 1)) {
3774 AVDictionaryEntry *tcr = av_dict_get(st->metadata, "timecode", NULL, 0);
3775 if (tcr) {
3776 av_dict_set(&s->metadata, "timecode", tcr->value, 0);
3777 break;
3778 }
3779 }
3780 }
3781}
3782
f6fa7814
DM		 3783static int read_tfra(MOVContext *mov, AVIOContext *f)
3784{
3785 MOVFragmentIndex* index = NULL;
0e279ba6 3786 int version, fieldlength, i, j;
f6fa7814
DM		 3787 int64_t pos = avio_tell(f);
3788 uint32_t size = avio_rb32(f);
0e279ba6
DM		 3789 void *tmp;
3790
f6fa7814 3791 if (avio_rb32(f) != MKBETAG('t', 'f', 'r', 'a')) {
0e279ba6 3792 return 1;
f6fa7814
DM		 3793 }
3794 av_log(mov->fc, AV_LOG_VERBOSE, "found tfra\n");
3795 index = av_mallocz(sizeof(MOVFragmentIndex));
3796 if (!index) {
3797 return AVERROR(ENOMEM);
3798 }
0e279ba6
DM		 3799
3800 tmp = av_realloc_array(mov->fragment_index_data,
3801 mov->fragment_index_count + 1,
3802 sizeof(MOVFragmentIndex*));
3803 if (!tmp) {
f6fa7814 3804 av_freep(&index);
0e279ba6 3805 return AVERROR(ENOMEM);
f6fa7814 3806 }
0e279ba6
DM		 3807 mov->fragment_index_data = tmp;
3808 mov->fragment_index_data[mov->fragment_index_count++] = index;
f6fa7814
DM		 3809
3810 version = avio_r8(f);
3811 avio_rb24(f);
3812 index->track_id = avio_rb32(f);
3813 fieldlength = avio_rb32(f);
3814 index->item_count = avio_rb32(f);
0e279ba6
DM		 3815 index->items = av_mallocz_array(
3816 index->item_count, sizeof(MOVFragmentIndexItem));
f6fa7814 3817 if (!index->items) {
0e279ba6 3818 index->item_count = 0;
f6fa7814
DM		 3819 return AVERROR(ENOMEM);
3820 }
3821 for (i = 0; i < index->item_count; i++) {
3822 int64_t time, offset;
3823 if (version == 1) {
3824 time = avio_rb64(f);
3825 offset = avio_rb64(f);
3826 } else {
3827 time = avio_rb32(f);
3828 offset = avio_rb32(f);
3829 }
3830 index->items[i].time = time;
3831 index->items[i].moof_offset = offset;
3832 for (j = 0; j < ((fieldlength >> 4) & 3) + 1; j++)
3833 avio_r8(f);
3834 for (j = 0; j < ((fieldlength >> 2) & 3) + 1; j++)
3835 avio_r8(f);
3836 for (j = 0; j < ((fieldlength >> 0) & 3) + 1; j++)
3837 avio_r8(f);
3838 }
3839
3840 avio_seek(f, pos + size, SEEK_SET);
3841 return 0;
3842}
3843
3844static int mov_read_mfra(MOVContext *c, AVIOContext *f)
3845{
3846 int64_t stream_size = avio_size(f);
3847 int64_t original_pos = avio_tell(f);
3848 int64_t seek_ret;
3849 int32_t mfra_size;
3850 int ret = -1;
3851 if ((seek_ret = avio_seek(f, stream_size - 4, SEEK_SET)) < 0) {
3852 ret = seek_ret;
3853 goto fail;
3854 }
3855 mfra_size = avio_rb32(f);
3856 if (mfra_size < 0 || mfra_size > stream_size) {
3857 av_log(c->fc, AV_LOG_DEBUG, "doesn't look like mfra (unreasonable size)\n");
3858 goto fail;
3859 }
3860 if ((seek_ret = avio_seek(f, -mfra_size, SEEK_CUR)) < 0) {
3861 ret = seek_ret;
3862 goto fail;
3863 }
3864 if (avio_rb32(f) != mfra_size) {
3865 av_log(c->fc, AV_LOG_DEBUG, "doesn't look like mfra (size mismatch)\n");
3866 goto fail;
3867 }
3868 if (avio_rb32(f) != MKBETAG('m', 'f', 'r', 'a')) {
3869 av_log(c->fc, AV_LOG_DEBUG, "doesn't look like mfra (tag mismatch)\n");
3870 goto fail;
3871 }
f6fa7814 3872 av_log(c->fc, AV_LOG_VERBOSE, "stream has mfra\n");
0e279ba6
DM		 3873 do {
3874 ret = read_tfra(c, f);
3875 if (ret < 0)
3876 goto fail;
3877 } while (!ret);
3878 ret = 0;
f6fa7814
DM		 3879fail:
3880 seek_ret = avio_seek(f, original_pos, SEEK_SET);
3881 if (seek_ret < 0) {
3882 av_log(c->fc, AV_LOG_ERROR,
3883 "failed to seek back after looking for mfra\n");
3884 ret = seek_ret;
3885 }
3886 return ret;
3887}
3888
2ba45a60
DM		 3889static int mov_read_header(AVFormatContext *s)
3890{
3891 MOVContext *mov = s->priv_data;
3892 AVIOContext *pb = s->pb;
3893 int j, err;
3894 MOVAtom atom = { AV_RL32("root") };
3895 int i;
3896
3897 mov->fc = s;
3898 /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
3899 if (pb->seekable)
3900 atom.size = avio_size(pb);
3901 else
3902 atom.size = INT64_MAX;
3903
3904 /* check MOV header */
3905 do {
3906 if (mov->moov_retry)
3907 avio_seek(pb, 0, SEEK_SET);
3908 if ((err = mov_read_default(mov, pb, atom)) < 0) {
3909 av_log(s, AV_LOG_ERROR, "error reading header\n");
3910 mov_read_close(s);
3911 return err;
3912 }
3913 } while (pb->seekable && !mov->found_moov && !mov->moov_retry++);
3914 if (!mov->found_moov) {
3915 av_log(s, AV_LOG_ERROR, "moov atom not found\n");
3916 mov_read_close(s);
3917 return AVERROR_INVALIDDATA;
3918 }
3919 av_dlog(mov->fc, "on_parse_exit_offset=%"PRId64"\n", avio_tell(pb));
3920
3921 if (pb->seekable) {
3922 if (mov->chapter_track > 0)
3923 mov_read_chapters(s);
3924 for (i = 0; i < s->nb_streams; i++)
3925 if (s->streams[i]->codec->codec_tag == AV_RL32("tmcd"))
3926 mov_read_timecode_track(s, s->streams[i]);
3927 }
3928
3929 /* copy timecode metadata from tmcd tracks to the related video streams */
3930 for (i = 0; i < s->nb_streams; i++) {
3931 AVStream *st = s->streams[i];
3932 MOVStreamContext *sc = st->priv_data;
3933 if (sc->timecode_track > 0) {
3934 AVDictionaryEntry *tcr;
3935 int tmcd_st_id = -1;
3936
3937 for (j = 0; j < s->nb_streams; j++)
3938 if (s->streams[j]->id == sc->timecode_track)
3939 tmcd_st_id = j;
3940
3941 if (tmcd_st_id < 0 || tmcd_st_id == i)
3942 continue;
3943 tcr = av_dict_get(s->streams[tmcd_st_id]->metadata, "timecode", NULL, 0);
3944 if (tcr)
3945 av_dict_set(&st->metadata, "timecode", tcr->value, 0);
3946 }
3947 }
3948 export_orphan_timecode(s);
3949
3950 for (i = 0; i < s->nb_streams; i++) {
3951 AVStream *st = s->streams[i];
3952 MOVStreamContext *sc = st->priv_data;
3953 fix_timescale(mov, sc);
3954 if(st->codec->codec_type == AVMEDIA_TYPE_AUDIO && st->codec->codec_id == AV_CODEC_ID_AAC) {
3955 st->skip_samples = sc->start_pad;
3956 }
3957 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && sc->nb_frames_for_fps > 0 && sc->duration_for_fps > 0)
3958 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
3959 sc->time_scale*(int64_t)sc->nb_frames_for_fps, sc->duration_for_fps, INT_MAX);
3960 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
f6fa7814 3961 if (st->codec->width <= 0 || st->codec->height <= 0) {
2ba45a60
DM		 3962 st->codec->width = sc->width;
3963 st->codec->height = sc->height;
3964 }
3965 if (st->codec->codec_id == AV_CODEC_ID_DVD_SUBTITLE) {
3966 if ((err = mov_rewrite_dvd_sub_extradata(st)) < 0)
3967 return err;
3968 }
3969 }
3970 }
3971
3972 if (mov->trex_data) {
3973 for (i = 0; i < s->nb_streams; i++) {
3974 AVStream *st = s->streams[i];
3975 MOVStreamContext *sc = st->priv_data;
3976 if (st->duration > 0)
3977 st->codec->bit_rate = sc->data_size * 8 * sc->time_scale / st->duration;
3978 }
3979 }
3980
f6fa7814
DM		 3981 if (mov->use_mfra_for > 0) {
3982 for (i = 0; i < s->nb_streams; i++) {
3983 AVStream *st = s->streams[i];
3984 MOVStreamContext *sc = st->priv_data;
3985 if (sc->duration_for_fps > 0) {
3986 st->codec->bit_rate = sc->data_size * 8 * sc->time_scale /
3987 sc->duration_for_fps;
3988 }
3989 }
3990 }
3991
2ba45a60
DM		 3992 for (i = 0; i < mov->bitrates_count && i < s->nb_streams; i++) {
3993 if (mov->bitrates[i]) {
3994 s->streams[i]->codec->bit_rate = mov->bitrates[i];
3995 }
3996 }
3997
3998 ff_rfps_calculate(s);
3999
4000 for (i = 0; i < s->nb_streams; i++) {
4001 AVStream *st = s->streams[i];
4002 MOVStreamContext *sc = st->priv_data;
4003
4004 switch (st->codec->codec_type) {
4005 case AVMEDIA_TYPE_AUDIO:
4006 err = ff_replaygain_export(st, s->metadata);
4007 if (err < 0) {
4008 mov_read_close(s);
4009 return err;
4010 }
4011 break;
4012 case AVMEDIA_TYPE_VIDEO:
4013 if (sc->display_matrix) {
4014 AVPacketSideData *sd, *tmp;
4015
4016 tmp = av_realloc_array(st->side_data,
4017 st->nb_side_data + 1, sizeof(*tmp));
4018 if (!tmp)
4019 return AVERROR(ENOMEM);
4020
4021 st->side_data = tmp;
4022 st->nb_side_data++;
4023
4024 sd = &st->side_data[st->nb_side_data - 1];
4025 sd->type = AV_PKT_DATA_DISPLAYMATRIX;
4026 sd->size = sizeof(int32_t) * 9;
4027 sd->data = (uint8_t*)sc->display_matrix;
4028 sc->display_matrix = NULL;
4029 }
4030 break;
4031 }
4032 }
4033
4034 return 0;
4035}
4036
4037static AVIndexEntry *mov_find_next_sample(AVFormatContext *s, AVStream **st)
4038{
4039 AVIndexEntry *sample = NULL;
4040 int64_t best_dts = INT64_MAX;
4041 int i;
4042 for (i = 0; i < s->nb_streams; i++) {
4043 AVStream *avst = s->streams[i];
4044 MOVStreamContext *msc = avst->priv_data;
4045 if (msc->pb && msc->current_sample < avst->nb_index_entries) {
4046 AVIndexEntry *current_sample = &avst->index_entries[msc->current_sample];
4047 int64_t dts = av_rescale(current_sample->timestamp, AV_TIME_BASE, msc->time_scale);
4048 av_dlog(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
4049 if (!sample || (!s->pb->seekable && current_sample->pos < sample->pos) ||
4050 (s->pb->seekable &&
4051 ((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb &&
4052 ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
4053 (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) {
4054 sample = current_sample;
4055 best_dts = dts;
4056 *st = avst;
4057 }
4058 }
4059 }
4060 return sample;
4061}
4062
4063static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
4064{
4065 MOVContext *mov = s->priv_data;
4066 MOVStreamContext *sc;
4067 AVIndexEntry *sample;
4068 AVStream *st = NULL;
4069 int ret;
4070 mov->fc = s;
4071 retry:
4072 sample = mov_find_next_sample(s, &st);
4073 if (!sample) {
4074 mov->found_mdat = 0;
4075 if (!mov->next_root_atom)
4076 return AVERROR_EOF;
4077 avio_seek(s->pb, mov->next_root_atom, SEEK_SET);
4078 mov->next_root_atom = 0;
4079 if (mov_read_default(mov, s->pb, (MOVAtom){ AV_RL32("root"), INT64_MAX }) < 0 ||
4080 avio_feof(s->pb))
4081 return AVERROR_EOF;
4082 av_dlog(s, "read fragments, offset 0x%"PRIx64"\n", avio_tell(s->pb));
4083 goto retry;
4084 }
4085 sc = st->priv_data;
4086 /* must be done just before reading, to avoid infinite loop on sample */
4087 sc->current_sample++;
4088
4089 if (mov->next_root_atom) {
4090 sample->pos = FFMIN(sample->pos, mov->next_root_atom);
4091 sample->size = FFMIN(sample->size, (mov->next_root_atom - sample->pos));
4092 }
4093
4094 if (st->discard != AVDISCARD_ALL) {
4095 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
4096 av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
4097 sc->ffindex, sample->pos);
4098 return AVERROR_INVALIDDATA;
4099 }
4100 ret = av_get_packet(sc->pb, pkt, sample->size);
4101 if (ret < 0)
4102 return ret;
4103 if (sc->has_palette) {
4104 uint8_t *pal;
4105
4106 pal = av_packet_new_side_data(pkt, AV_PKT_DATA_PALETTE, AVPALETTE_SIZE);
4107 if (!pal) {
4108 av_log(mov->fc, AV_LOG_ERROR, "Cannot append palette to packet\n");
4109 } else {
4110 memcpy(pal, sc->palette, AVPALETTE_SIZE);
4111 sc->has_palette = 0;
4112 }
4113 }
4114#if CONFIG_DV_DEMUXER
4115 if (mov->dv_demux && sc->dv_audio_container) {
4116 avpriv_dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size, pkt->pos);
0e279ba6 4117 av_freep(&pkt->data);
2ba45a60
DM		 4118 pkt->size = 0;
4119 ret = avpriv_dv_get_packet(mov->dv_demux, pkt);
4120 if (ret < 0)
4121 return ret;
4122 }
4123#endif
4124 }
4125
4126 pkt->stream_index = sc->ffindex;
4127 pkt->dts = sample->timestamp;
4128 if (sc->ctts_data && sc->ctts_index < sc->ctts_count) {
4129 pkt->pts = pkt->dts + sc->dts_shift + sc->ctts_data[sc->ctts_index].duration;
4130 /* update ctts context */
4131 sc->ctts_sample++;
4132 if (sc->ctts_index < sc->ctts_count &&
4133 sc->ctts_data[sc->ctts_index].count == sc->ctts_sample) {
4134 sc->ctts_index++;
4135 sc->ctts_sample = 0;
4136 }
4137 if (sc->wrong_dts)
4138 pkt->dts = AV_NOPTS_VALUE;
4139 } else {
4140 int64_t next_dts = (sc->current_sample < st->nb_index_entries) ?
4141 st->index_entries[sc->current_sample].timestamp : st->duration;
4142 pkt->duration = next_dts - pkt->dts;
4143 pkt->pts = pkt->dts;
4144 }
4145 if (st->discard == AVDISCARD_ALL)
4146 goto retry;
4147 pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? AV_PKT_FLAG_KEY : 0;
4148 pkt->pos = sample->pos;
4149 av_dlog(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n",
4150 pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
4151 return 0;
4152}
4153
4154static int mov_seek_stream(AVFormatContext *s, AVStream *st, int64_t timestamp, int flags)
4155{
4156 MOVStreamContext *sc = st->priv_data;
4157 int sample, time_sample;
4158 int i;
4159
4160 sample = av_index_search_timestamp(st, timestamp, flags);
4161 av_dlog(s, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
4162 if (sample < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
4163 sample = 0;
4164 if (sample < 0) /* not sure what to do */
4165 return AVERROR_INVALIDDATA;
4166 sc->current_sample = sample;
4167 av_dlog(s, "stream %d, found sample %d\n", st->index, sc->current_sample);
4168 /* adjust ctts index */
4169 if (sc->ctts_data) {
4170 time_sample = 0;
4171 for (i = 0; i < sc->ctts_count; i++) {
4172 int next = time_sample + sc->ctts_data[i].count;
4173 if (next > sc->current_sample) {
4174 sc->ctts_index = i;
4175 sc->ctts_sample = sc->current_sample - time_sample;
4176 break;
4177 }
4178 time_sample = next;
4179 }
4180 }
4181 return sample;
4182}
4183
4184static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
4185{
4186 AVStream *st;
4187 int64_t seek_timestamp, timestamp;
4188 int sample;
4189 int i;
4190
4191 if (stream_index >= s->nb_streams)
4192 return AVERROR_INVALIDDATA;
4193
4194 st = s->streams[stream_index];
4195 sample = mov_seek_stream(s, st, sample_time, flags);
4196 if (sample < 0)
4197 return sample;
4198
4199 /* adjust seek timestamp to found sample timestamp */
4200 seek_timestamp = st->index_entries[sample].timestamp;
4201
4202 for (i = 0; i < s->nb_streams; i++) {
4203 MOVStreamContext *sc = s->streams[i]->priv_data;
4204 st = s->streams[i];
4205 st->skip_samples = (sample_time <= 0) ? sc->start_pad : 0;
4206
4207 if (stream_index == i)
4208 continue;
4209
4210 timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
4211 mov_seek_stream(s, st, timestamp, flags);
4212 }
4213 return 0;
4214}
4215
f6fa7814
DM		 4216#define OFFSET(x) offsetof(MOVContext, x)
4217#define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
4218static const AVOption mov_options[] = {
2ba45a60
DM		 4219 {"use_absolute_path",
4220 "allow using absolute path when opening alias, this is a possible security issue",
4221 offsetof(MOVContext, use_absolute_path), FF_OPT_TYPE_INT, {.i64 = 0},
4222 0, 1, AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_DECODING_PARAM},
4223 {"ignore_editlist", "", offsetof(MOVContext, ignore_editlist), FF_OPT_TYPE_INT, {.i64 = 0},
4224 0, 1, AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_DECODING_PARAM},
f6fa7814
DM		 4225 {"use_mfra_for",
4226 "use mfra for fragment timestamps",
4227 offsetof(MOVContext, use_mfra_for), FF_OPT_TYPE_INT, {.i64 = FF_MOV_FLAG_MFRA_AUTO},
4228 -1, FF_MOV_FLAG_MFRA_PTS, AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_DECODING_PARAM,
4229 "use_mfra_for"},
4230 {"auto", "auto", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_MFRA_AUTO}, 0, 0,
4231 AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_DECODING_PARAM, "use_mfra_for" },
4232 {"dts", "dts", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_MFRA_DTS}, 0, 0,
4233 AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_DECODING_PARAM, "use_mfra_for" },
4234 {"pts", "pts", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_MFRA_PTS}, 0, 0,
4235 AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_DECODING_PARAM, "use_mfra_for" },
4236 { "export_all", "Export unrecognized metadata entries", OFFSET(export_all),
4237 AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, .flags = FLAGS },
4238 { NULL },
2ba45a60
DM		 4239};
4240
4241static const AVClass mov_class = {
4242 .class_name = "mov,mp4,m4a,3gp,3g2,mj2",
4243 .item_name = av_default_item_name,
f6fa7814 4244 .option = mov_options,
2ba45a60
DM		 4245 .version = LIBAVUTIL_VERSION_INT,
4246};
4247
4248AVInputFormat ff_mov_demuxer = {
4249 .name = "mov,mp4,m4a,3gp,3g2,mj2",
4250 .long_name = NULL_IF_CONFIG_SMALL("QuickTime / MOV"),
f6fa7814 4251 .priv_class = &mov_class,
2ba45a60
DM		 4252 .priv_data_size = sizeof(MOVContext),
4253 .extensions = "mov,mp4,m4a,3gp,3g2,mj2",
4254 .read_probe = mov_probe,
4255 .read_header = mov_read_header,
4256 .read_packet = mov_read_packet,
4257 .read_close = mov_read_close,
4258 .read_seek = mov_read_seek,
2ba45a60
DM		 4259 .flags = AVFMT_NO_BYTE_SEEK,
4260};
ffmpeg Piment Noir Debian package repository