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Imported Debian version 2.5.0~trusty1.1
[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{
213 char *value = av_malloc(len + 1);
214 if (!value)
215 return AVERROR(ENOMEM);
216 avio_read(pb, value, len);
217 value[len] = 0;
218 return av_dict_set(&c->fc->metadata, key, value, AV_DICT_DONT_STRDUP_VAL);
219}
220
221static int mov_metadata_loci(MOVContext *c, AVIOContext *pb, unsigned len)
222{
223 char language[4] = { 0 };
224 char buf[100];
225 uint16_t langcode = 0;
226 double longitude, latitude;
227 const char *key = "location";
228
229 if (len < 4 + 2 + 1 + 1 + 4 + 4 + 4)
230 return AVERROR_INVALIDDATA;
231
232 avio_skip(pb, 4); // version+flags
233 langcode = avio_rb16(pb);
234 ff_mov_lang_to_iso639(langcode, language);
235 len -= 6;
236
237 len -= avio_get_str(pb, len, buf, sizeof(buf)); // place name
238 if (len < 1)
239 return AVERROR_INVALIDDATA;
240 avio_skip(pb, 1); // role
241 len -= 1;
242
243 if (len < 14)
244 return AVERROR_INVALIDDATA;
245 longitude = ((int32_t) avio_rb32(pb)) / (float) (1 << 16);
246 latitude = ((int32_t) avio_rb32(pb)) / (float) (1 << 16);
247
248 // Try to output in the same format as the ?xyz field
249 snprintf(buf, sizeof(buf), "%+08.4f%+09.4f/", latitude, longitude);
250 if (*language && strcmp(language, "und")) {
251 char key2[16];
252 snprintf(key2, sizeof(key2), "%s-%s", key, language);
253 av_dict_set(&c->fc->metadata, key2, buf, 0);
254 }
255 c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
256 return av_dict_set(&c->fc->metadata, key, buf, 0);
257}
258
259static int mov_read_udta_string(MOVContext *c, AVIOContext *pb, MOVAtom atom)
260{
2ba45a60 261 char tmp_key[5];
f6fa7814
DM		 262 char key2[32], language[4] = {0};
263 char *str = NULL;
2ba45a60
DM		 264 const char *key = NULL;
265 uint16_t langcode = 0;
f6fa7814 266 uint32_t data_type = 0, str_size, str_size_alloc;
2ba45a60
DM		 267 int (*parse)(MOVContext*, AVIOContext*, unsigned, const char*) = NULL;
268
269 switch (atom.type) {
270 case MKTAG(0xa9,'n','a','m'): key = "title"; break;
271 case MKTAG(0xa9,'a','u','t'):
272 case MKTAG(0xa9,'A','R','T'): key = "artist"; break;
273 case MKTAG( 'a','A','R','T'): key = "album_artist"; break;
274 case MKTAG(0xa9,'w','r','t'): key = "composer"; break;
275 case MKTAG( 'c','p','i','l'): key = "compilation";
276 parse = mov_metadata_int8_no_padding; break;
277 case MKTAG( 'c','p','r','t'):
278 case MKTAG(0xa9,'c','p','y'): key = "copyright"; break;
279 case MKTAG(0xa9,'g','r','p'): key = "grouping"; break;
280 case MKTAG(0xa9,'l','y','r'): key = "lyrics"; break;
281 case MKTAG(0xa9,'c','m','t'):
282 case MKTAG(0xa9,'i','n','f'): key = "comment"; break;
283 case MKTAG(0xa9,'a','l','b'): key = "album"; break;
284 case MKTAG(0xa9,'d','a','y'): key = "date"; break;
285 case MKTAG(0xa9,'g','e','n'): key = "genre"; break;
286 case MKTAG( 'g','n','r','e'): key = "genre";
287 parse = mov_metadata_gnre; break;
288 case MKTAG(0xa9,'t','o','o'):
289 case MKTAG(0xa9,'s','w','r'): key = "encoder"; break;
290 case MKTAG(0xa9,'e','n','c'): key = "encoder"; break;
291 case MKTAG(0xa9,'m','a','k'): key = "make"; break;
292 case MKTAG(0xa9,'m','o','d'): key = "model"; break;
293 case MKTAG(0xa9,'x','y','z'): key = "location"; break;
294 case MKTAG( 'd','e','s','c'): key = "description";break;
295 case MKTAG( 'l','d','e','s'): key = "synopsis"; break;
296 case MKTAG( 't','v','s','h'): key = "show"; break;
297 case MKTAG( 't','v','e','n'): key = "episode_id";break;
298 case MKTAG( 't','v','n','n'): key = "network"; break;
299 case MKTAG( 't','r','k','n'): key = "track";
300 parse = mov_metadata_track_or_disc_number; break;
301 case MKTAG( 'd','i','s','k'): key = "disc";
302 parse = mov_metadata_track_or_disc_number; break;
303 case MKTAG( 't','v','e','s'): key = "episode_sort";
304 parse = mov_metadata_int8_bypass_padding; break;
305 case MKTAG( 't','v','s','n'): key = "season_number";
306 parse = mov_metadata_int8_bypass_padding; break;
307 case MKTAG( 's','t','i','k'): key = "media_type";
308 parse = mov_metadata_int8_no_padding; break;
309 case MKTAG( 'h','d','v','d'): key = "hd_video";
310 parse = mov_metadata_int8_no_padding; break;
311 case MKTAG( 'p','g','a','p'): key = "gapless_playback";
312 parse = mov_metadata_int8_no_padding; break;
313 case MKTAG( '@','P','R','M'):
314 return mov_metadata_raw(c, pb, atom.size, "premiere_version");
315 case MKTAG( '@','P','R','Q'):
316 return mov_metadata_raw(c, pb, atom.size, "quicktime_version");
317 case MKTAG( 'l','o','c','i'):
318 return mov_metadata_loci(c, pb, atom.size);
319 case MKTAG( 'X','M','P','_'):
320 return mov_metadata_raw(c, pb, atom.size, "xmp");
321 }
322
323 if (c->itunes_metadata && atom.size > 8) {
324 int data_size = avio_rb32(pb);
325 int tag = avio_rl32(pb);
326 if (tag == MKTAG('d','a','t','a')) {
327 data_type = avio_rb32(pb); // type
328 avio_rb32(pb); // unknown
329 str_size = data_size - 16;
330 atom.size -= 16;
331
332 if (atom.type == MKTAG('c', 'o', 'v', 'r')) {
333 int ret = mov_read_covr(c, pb, data_type, str_size);
334 if (ret < 0) {
335 av_log(c->fc, AV_LOG_ERROR, "Error parsing cover art.\n");
336 }
337 return ret;
338 }
339 } else return 0;
340 } else if (atom.size > 4 && key && !c->itunes_metadata) {
341 str_size = avio_rb16(pb); // string length
342 langcode = avio_rb16(pb);
343 ff_mov_lang_to_iso639(langcode, language);
344 atom.size -= 4;
345 } else
346 str_size = atom.size;
347
f6fa7814 348 if (c->export_all && !key) {
2ba45a60
DM		 349 snprintf(tmp_key, 5, "%.4s", (char*)&atom.type);
350 key = tmp_key;
351 }
2ba45a60
DM		 352
353 if (!key)
354 return 0;
355 if (atom.size < 0)
356 return AVERROR_INVALIDDATA;
357
f6fa7814
DM		 358 str_size_alloc = str_size << 1; // worst-case requirement for output string in case of utf8 coded input
359 str = av_malloc(str_size_alloc);
360 if (!str)
361 return AVERROR(ENOMEM);
2ba45a60
DM		 362
363 if (parse)
364 parse(c, pb, str_size, key);
365 else {
366 if (data_type == 3 || (data_type == 0 && (langcode < 0x400 || langcode == 0x7fff))) { // MAC Encoded
f6fa7814 367 mov_read_mac_string(c, pb, str_size, str, str_size_alloc);
2ba45a60
DM		 368 } else {
369 int ret = avio_read(pb, str, str_size);
f6fa7814
DM		 370 if (ret != str_size) {
371 av_freep(&str);
2ba45a60 372 return ret < 0 ? ret : AVERROR_INVALIDDATA;
f6fa7814 373 }
2ba45a60
DM		 374 str[str_size] = 0;
375 }
376 c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
377 av_dict_set(&c->fc->metadata, key, str, 0);
378 if (*language && strcmp(language, "und")) {
379 snprintf(key2, sizeof(key2), "%s-%s", key, language);
380 av_dict_set(&c->fc->metadata, key2, str, 0);
381 }
382 }
383 av_dlog(c->fc, "lang \"%3s\" ", language);
384 av_dlog(c->fc, "tag \"%s\" value \"%s\" atom \"%.4s\" %d %"PRId64"\n",
f6fa7814 385 key, str, (char*)&atom.type, str_size_alloc, atom.size);
2ba45a60 386
f6fa7814 387 av_freep(&str);
2ba45a60
DM		 388 return 0;
389}
390
391static int mov_read_chpl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
392{
393 int64_t start;
394 int i, nb_chapters, str_len, version;
395 char str[256+1];
396
397 if ((atom.size -= 5) < 0)
398 return 0;
399
400 version = avio_r8(pb);
401 avio_rb24(pb);
402 if (version)
403 avio_rb32(pb); // ???
404 nb_chapters = avio_r8(pb);
405
406 for (i = 0; i < nb_chapters; i++) {
407 if (atom.size < 9)
408 return 0;
409
410 start = avio_rb64(pb);
411 str_len = avio_r8(pb);
412
413 if ((atom.size -= 9+str_len) < 0)
414 return 0;
415
416 avio_read(pb, str, str_len);
417 str[str_len] = 0;
418 avpriv_new_chapter(c->fc, i, (AVRational){1,10000000}, start, AV_NOPTS_VALUE, str);
419 }
420 return 0;
421}
422
423#define MIN_DATA_ENTRY_BOX_SIZE 12
424static int mov_read_dref(MOVContext *c, AVIOContext *pb, MOVAtom atom)
425{
426 AVStream *st;
427 MOVStreamContext *sc;
428 int entries, i, j;
429
430 if (c->fc->nb_streams < 1)
431 return 0;
432 st = c->fc->streams[c->fc->nb_streams-1];
433 sc = st->priv_data;
434
435 avio_rb32(pb); // version + flags
436 entries = avio_rb32(pb);
437 if (entries > (atom.size - 1) / MIN_DATA_ENTRY_BOX_SIZE + 1 ||
438 entries >= UINT_MAX / sizeof(*sc->drefs))
439 return AVERROR_INVALIDDATA;
440 av_free(sc->drefs);
441 sc->drefs_count = 0;
442 sc->drefs = av_mallocz(entries * sizeof(*sc->drefs));
443 if (!sc->drefs)
444 return AVERROR(ENOMEM);
445 sc->drefs_count = entries;
446
447 for (i = 0; i < sc->drefs_count; i++) {
448 MOVDref *dref = &sc->drefs[i];
449 uint32_t size = avio_rb32(pb);
450 int64_t next = avio_tell(pb) + size - 4;
451
452 if (size < 12)
453 return AVERROR_INVALIDDATA;
454
455 dref->type = avio_rl32(pb);
456 avio_rb32(pb); // version + flags
457 av_dlog(c->fc, "type %.4s size %d\n", (char*)&dref->type, size);
458
459 if (dref->type == MKTAG('a','l','i','s') && size > 150) {
460 /* macintosh alias record */
461 uint16_t volume_len, len;
462 int16_t type;
463
464 avio_skip(pb, 10);
465
466 volume_len = avio_r8(pb);
467 volume_len = FFMIN(volume_len, 27);
468 avio_read(pb, dref->volume, 27);
469 dref->volume[volume_len] = 0;
470 av_log(c->fc, AV_LOG_DEBUG, "volume %s, len %d\n", dref->volume, volume_len);
471
472 avio_skip(pb, 12);
473
474 len = avio_r8(pb);
475 len = FFMIN(len, 63);
476 avio_read(pb, dref->filename, 63);
477 dref->filename[len] = 0;
478 av_log(c->fc, AV_LOG_DEBUG, "filename %s, len %d\n", dref->filename, len);
479
480 avio_skip(pb, 16);
481
482 /* read next level up_from_alias/down_to_target */
483 dref->nlvl_from = avio_rb16(pb);
484 dref->nlvl_to = avio_rb16(pb);
485 av_log(c->fc, AV_LOG_DEBUG, "nlvl from %d, nlvl to %d\n",
486 dref->nlvl_from, dref->nlvl_to);
487
488 avio_skip(pb, 16);
489
490 for (type = 0; type != -1 && avio_tell(pb) < next; ) {
491 if(avio_feof(pb))
492 return AVERROR_EOF;
493 type = avio_rb16(pb);
494 len = avio_rb16(pb);
495 av_log(c->fc, AV_LOG_DEBUG, "type %d, len %d\n", type, len);
496 if (len&1)
497 len += 1;
498 if (type == 2) { // absolute path
499 av_free(dref->path);
500 dref->path = av_mallocz(len+1);
501 if (!dref->path)
502 return AVERROR(ENOMEM);
503 avio_read(pb, dref->path, len);
504 if (len > volume_len && !strncmp(dref->path, dref->volume, volume_len)) {
505 len -= volume_len;
506 memmove(dref->path, dref->path+volume_len, len);
507 dref->path[len] = 0;
508 }
509 for (j = 0; j < len; j++)
510 if (dref->path[j] == ':')
511 dref->path[j] = '/';
512 av_log(c->fc, AV_LOG_DEBUG, "path %s\n", dref->path);
513 } else if (type == 0) { // directory name
514 av_free(dref->dir);
515 dref->dir = av_malloc(len+1);
516 if (!dref->dir)
517 return AVERROR(ENOMEM);
518 if (avio_read(pb, dref->dir, len) != len)
519 return AVERROR_INVALIDDATA;
520 dref->dir[len] = 0;
521 for (j = 0; j < len; j++)
522 if (dref->dir[j] == ':')
523 dref->dir[j] = '/';
524 av_log(c->fc, AV_LOG_DEBUG, "dir %s\n", dref->dir);
525 } else
526 avio_skip(pb, len);
527 }
528 }
529 avio_seek(pb, next, SEEK_SET);
530 }
531 return 0;
532}
533
534static int mov_read_hdlr(MOVContext *c, AVIOContext *pb, MOVAtom atom)
535{
536 AVStream *st;
537 uint32_t type;
538 uint32_t av_unused ctype;
539 int title_size;
540 char *title_str;
541
542 if (c->fc->nb_streams < 1) // meta before first trak
543 return 0;
544
545 st = c->fc->streams[c->fc->nb_streams-1];
546
547 avio_r8(pb); /* version */
548 avio_rb24(pb); /* flags */
549
550 /* component type */
551 ctype = avio_rl32(pb);
552 type = avio_rl32(pb); /* component subtype */
553
554 av_dlog(c->fc, "ctype= %.4s (0x%08x)\n", (char*)&ctype, ctype);
555 av_dlog(c->fc, "stype= %.4s\n", (char*)&type);
556
557 if (type == MKTAG('v','i','d','e'))
558 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
559 else if (type == MKTAG('s','o','u','n'))
560 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
561 else if (type == MKTAG('m','1','a',' '))
562 st->codec->codec_id = AV_CODEC_ID_MP2;
563 else if ((type == MKTAG('s','u','b','p')) || (type == MKTAG('c','l','c','p')))
564 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
565
566 avio_rb32(pb); /* component manufacture */
567 avio_rb32(pb); /* component flags */
568 avio_rb32(pb); /* component flags mask */
569
570 title_size = atom.size - 24;
571 if (title_size > 0) {
572 title_str = av_malloc(title_size + 1); /* Add null terminator */
573 if (!title_str)
574 return AVERROR(ENOMEM);
575 avio_read(pb, title_str, title_size);
576 title_str[title_size] = 0;
577 if (title_str[0])
578 av_dict_set(&st->metadata, "handler_name", title_str +
579 (!c->isom && title_str[0] == title_size - 1), 0);
580 av_freep(&title_str);
581 }
582
583 return 0;
584}
585
586int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb)
587{
588 AVStream *st;
589 int tag;
590
591 if (fc->nb_streams < 1)
592 return 0;
593 st = fc->streams[fc->nb_streams-1];
594
595 avio_rb32(pb); /* version + flags */
596 ff_mp4_read_descr(fc, pb, &tag);
597 if (tag == MP4ESDescrTag) {
598 ff_mp4_parse_es_descr(pb, NULL);
599 } else
600 avio_rb16(pb); /* ID */
601
602 ff_mp4_read_descr(fc, pb, &tag);
603 if (tag == MP4DecConfigDescrTag)
604 ff_mp4_read_dec_config_descr(fc, st, pb);
605 return 0;
606}
607
608static int mov_read_esds(MOVContext *c, AVIOContext *pb, MOVAtom atom)
609{
610 return ff_mov_read_esds(c->fc, pb);
611}
612
613static int mov_read_dac3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
614{
615 AVStream *st;
616 int ac3info, acmod, lfeon, bsmod;
617
618 if (c->fc->nb_streams < 1)
619 return 0;
620 st = c->fc->streams[c->fc->nb_streams-1];
621
622 ac3info = avio_rb24(pb);
623 bsmod = (ac3info >> 14) & 0x7;
624 acmod = (ac3info >> 11) & 0x7;
625 lfeon = (ac3info >> 10) & 0x1;
626 st->codec->channels = ((int[]){2,1,2,3,3,4,4,5})[acmod] + lfeon;
627 st->codec->channel_layout = avpriv_ac3_channel_layout_tab[acmod];
628 if (lfeon)
629 st->codec->channel_layout |= AV_CH_LOW_FREQUENCY;
630 st->codec->audio_service_type = bsmod;
631 if (st->codec->channels > 1 && bsmod == 0x7)
632 st->codec->audio_service_type = AV_AUDIO_SERVICE_TYPE_KARAOKE;
633
634 return 0;
635}
636
637static int mov_read_dec3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
638{
639 AVStream *st;
640 int eac3info, acmod, lfeon, bsmod;
641
642 if (c->fc->nb_streams < 1)
643 return 0;
644 st = c->fc->streams[c->fc->nb_streams-1];
645
646 /* No need to parse fields for additional independent substreams and its
647 * associated dependent substreams since libavcodec's E-AC-3 decoder
648 * does not support them yet. */
649 avio_rb16(pb); /* data_rate and num_ind_sub */
650 eac3info = avio_rb24(pb);
651 bsmod = (eac3info >> 12) & 0x1f;
652 acmod = (eac3info >> 9) & 0x7;
653 lfeon = (eac3info >> 8) & 0x1;
654 st->codec->channel_layout = avpriv_ac3_channel_layout_tab[acmod];
655 if (lfeon)
656 st->codec->channel_layout |= AV_CH_LOW_FREQUENCY;
657 st->codec->channels = av_get_channel_layout_nb_channels(st->codec->channel_layout);
658 st->codec->audio_service_type = bsmod;
659 if (st->codec->channels > 1 && bsmod == 0x7)
660 st->codec->audio_service_type = AV_AUDIO_SERVICE_TYPE_KARAOKE;
661
662 return 0;
663}
664
665static int mov_read_chan(MOVContext *c, AVIOContext *pb, MOVAtom atom)
666{
667 AVStream *st;
668
669 if (c->fc->nb_streams < 1)
670 return 0;
671 st = c->fc->streams[c->fc->nb_streams-1];
672
673 if (atom.size < 16)
674 return 0;
675
676 /* skip version and flags */
677 avio_skip(pb, 4);
678
679 ff_mov_read_chan(c->fc, pb, st, atom.size - 4);
680
681 return 0;
682}
683
684static int mov_read_wfex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
685{
686 AVStream *st;
f6fa7814 687 int ret;
2ba45a60
DM		 688
689 if (c->fc->nb_streams < 1)
690 return 0;
691 st = c->fc->streams[c->fc->nb_streams-1];
692
f6fa7814 693 if ((ret = ff_get_wav_header(pb, st->codec, atom.size)) < 0)
2ba45a60 694 av_log(c->fc, AV_LOG_WARNING, "get_wav_header failed\n");
2ba45a60 695
f6fa7814 696 return ret;
2ba45a60
DM		 697}
698
699static int mov_read_pasp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
700{
701 const int num = avio_rb32(pb);
702 const int den = avio_rb32(pb);
703 AVStream *st;
704
705 if (c->fc->nb_streams < 1)
706 return 0;
707 st = c->fc->streams[c->fc->nb_streams-1];
708
709 if ((st->sample_aspect_ratio.den != 1 || st->sample_aspect_ratio.num) && // default
710 (den != st->sample_aspect_ratio.den || num != st->sample_aspect_ratio.num)) {
711 av_log(c->fc, AV_LOG_WARNING,
712 "sample aspect ratio already set to %d:%d, ignoring 'pasp' atom (%d:%d)\n",
713 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
714 num, den);
715 } else if (den != 0) {
716 st->sample_aspect_ratio.num = num;
717 st->sample_aspect_ratio.den = den;
718 }
719 return 0;
720}
721
722/* this atom contains actual media data */
723static int mov_read_mdat(MOVContext *c, AVIOContext *pb, MOVAtom atom)
724{
725 if (atom.size == 0) /* wrong one (MP4) */
726 return 0;
727 c->found_mdat=1;
728 return 0; /* now go for moov */
729}
730
731/* read major brand, minor version and compatible brands and store them as metadata */
732static int mov_read_ftyp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
733{
734 uint32_t minor_ver;
735 int comp_brand_size;
736 char* comp_brands_str;
737 uint8_t type[5] = {0};
738
739 avio_read(pb, type, 4);
740 if (strcmp(type, "qt "))
741 c->isom = 1;
742 av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
743 av_dict_set(&c->fc->metadata, "major_brand", type, 0);
744 minor_ver = avio_rb32(pb); /* minor version */
745 av_dict_set_int(&c->fc->metadata, "minor_version", minor_ver, 0);
746
747 comp_brand_size = atom.size - 8;
748 if (comp_brand_size < 0)
749 return AVERROR_INVALIDDATA;
750 comp_brands_str = av_malloc(comp_brand_size + 1); /* Add null terminator */
751 if (!comp_brands_str)
752 return AVERROR(ENOMEM);
753 avio_read(pb, comp_brands_str, comp_brand_size);
754 comp_brands_str[comp_brand_size] = 0;
755 av_dict_set(&c->fc->metadata, "compatible_brands", comp_brands_str, 0);
756 av_freep(&comp_brands_str);
757
758 return 0;
759}
760
761/* this atom should contain all header atoms */
762static int mov_read_moov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
763{
764 int ret;
765
766 if (c->found_moov) {
767 av_log(c->fc, AV_LOG_WARNING, "Found duplicated MOOV Atom. Skipped it\n");
768 avio_skip(pb, atom.size);
769 return 0;
770 }
771
772 if ((ret = mov_read_default(c, pb, atom)) < 0)
773 return ret;
774 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
775 /* so we don't parse the whole file if over a network */
776 c->found_moov=1;
777 return 0; /* now go for mdat */
778}
779
780static int mov_read_moof(MOVContext *c, AVIOContext *pb, MOVAtom atom)
781{
f6fa7814
DM		 782 if (!c->has_looked_for_mfra && c->use_mfra_for > 0) {
783 c->has_looked_for_mfra = 1;
784 if (pb->seekable) {
785 int ret;
786 av_log(c->fc, AV_LOG_VERBOSE, "stream has moof boxes, will look "
787 "for a mfra\n");
788 if ((ret = mov_read_mfra(c, pb)) < 0) {
789 av_log(c->fc, AV_LOG_VERBOSE, "found a moof box but failed to "
790 "read the mfra (may be a live ismv)\n");
791 }
792 } else {
793 av_log(c->fc, AV_LOG_VERBOSE, "found a moof box but stream is not "
794 "seekable, can not look for mfra\n");
795 }
796 }
2ba45a60
DM		 797 c->fragment.moof_offset = c->fragment.implicit_offset = avio_tell(pb) - 8;
798 av_dlog(c->fc, "moof offset %"PRIx64"\n", c->fragment.moof_offset);
799 return mov_read_default(c, pb, atom);
800}
801
802static void mov_metadata_creation_time(AVDictionary **metadata, int64_t time)
803{
804 char buffer[32];
805 if (time) {
f6fa7814 806 struct tm *ptm, tmbuf;
2ba45a60
DM		 807 time_t timet;
808 if(time >= 2082844800)
809 time -= 2082844800; /* seconds between 1904-01-01 and Epoch */
810 timet = time;
f6fa7814 811 ptm = gmtime_r(&timet, &tmbuf);
2ba45a60 812 if (!ptm) return;
f6fa7814
DM		 813 if (strftime(buffer, sizeof(buffer), "%Y-%m-%d %H:%M:%S", ptm))
814 av_dict_set(metadata, "creation_time", buffer, 0);
2ba45a60
DM		 815 }
816}
817
818static int mov_read_mdhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
819{
820 AVStream *st;
821 MOVStreamContext *sc;
822 int version;
823 char language[4] = {0};
824 unsigned lang;
825 int64_t creation_time;
826
827 if (c->fc->nb_streams < 1)
828 return 0;
829 st = c->fc->streams[c->fc->nb_streams-1];
830 sc = st->priv_data;
831
832 if (sc->time_scale) {
833 av_log(c->fc, AV_LOG_ERROR, "Multiple mdhd?\n");
834 return AVERROR_INVALIDDATA;
835 }
836
837 version = avio_r8(pb);
838 if (version > 1) {
839 avpriv_request_sample(c->fc, "Version %d", version);
840 return AVERROR_PATCHWELCOME;
841 }
842 avio_rb24(pb); /* flags */
843 if (version == 1) {
844 creation_time = avio_rb64(pb);
845 avio_rb64(pb);
846 } else {
847 creation_time = avio_rb32(pb);
848 avio_rb32(pb); /* modification time */
849 }
850 mov_metadata_creation_time(&st->metadata, creation_time);
851
852 sc->time_scale = avio_rb32(pb);
853 st->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
854
855 lang = avio_rb16(pb); /* language */
856 if (ff_mov_lang_to_iso639(lang, language))
857 av_dict_set(&st->metadata, "language", language, 0);
858 avio_rb16(pb); /* quality */
859
860 return 0;
861}
862
863static int mov_read_mvhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
864{
865 int64_t creation_time;
866 int version = avio_r8(pb); /* version */
867 avio_rb24(pb); /* flags */
868
869 if (version == 1) {
870 creation_time = avio_rb64(pb);
871 avio_rb64(pb);
872 } else {
873 creation_time = avio_rb32(pb);
874 avio_rb32(pb); /* modification time */
875 }
876 mov_metadata_creation_time(&c->fc->metadata, creation_time);
877 c->time_scale = avio_rb32(pb); /* time scale */
878
879 av_dlog(c->fc, "time scale = %i\n", c->time_scale);
880
881 c->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
882 // set the AVCodecContext duration because the duration of individual tracks
883 // may be inaccurate
884 if (c->time_scale > 0 && !c->trex_data)
885 c->fc->duration = av_rescale(c->duration, AV_TIME_BASE, c->time_scale);
886 avio_rb32(pb); /* preferred scale */
887
888 avio_rb16(pb); /* preferred volume */
889
890 avio_skip(pb, 10); /* reserved */
891
892 avio_skip(pb, 36); /* display matrix */
893
894 avio_rb32(pb); /* preview time */
895 avio_rb32(pb); /* preview duration */
896 avio_rb32(pb); /* poster time */
897 avio_rb32(pb); /* selection time */
898 avio_rb32(pb); /* selection duration */
899 avio_rb32(pb); /* current time */
900 avio_rb32(pb); /* next track ID */
901 return 0;
902}
903
904static int mov_read_enda(MOVContext *c, AVIOContext *pb, MOVAtom atom)
905{
906 AVStream *st;
907 int little_endian;
908
909 if (c->fc->nb_streams < 1)
910 return 0;
911 st = c->fc->streams[c->fc->nb_streams-1];
912
913 little_endian = avio_rb16(pb) & 0xFF;
914 av_dlog(c->fc, "enda %d\n", little_endian);
915 if (little_endian == 1) {
916 switch (st->codec->codec_id) {
917 case AV_CODEC_ID_PCM_S24BE:
918 st->codec->codec_id = AV_CODEC_ID_PCM_S24LE;
919 break;
920 case AV_CODEC_ID_PCM_S32BE:
921 st->codec->codec_id = AV_CODEC_ID_PCM_S32LE;
922 break;
923 case AV_CODEC_ID_PCM_F32BE:
924 st->codec->codec_id = AV_CODEC_ID_PCM_F32LE;
925 break;
926 case AV_CODEC_ID_PCM_F64BE:
927 st->codec->codec_id = AV_CODEC_ID_PCM_F64LE;
928 break;
929 default:
930 break;
931 }
932 }
933 return 0;
934}
935
f6fa7814
DM		 936static int mov_read_colr(MOVContext *c, AVIOContext *pb, MOVAtom atom)
937{
938 AVStream *st;
939 char color_parameter_type[5] = { 0 };
940 int color_primaries, color_trc, color_matrix;
941
942 if (c->fc->nb_streams < 1)
943 return 0;
944 st = c->fc->streams[c->fc->nb_streams - 1];
945
946 avio_read(pb, color_parameter_type, 4);
947 if (strncmp(color_parameter_type, "nclx", 4) &&
948 strncmp(color_parameter_type, "nclc", 4)) {
949 av_log(c->fc, AV_LOG_WARNING, "unsupported color_parameter_type %s\n",
950 color_parameter_type);
951 return 0;
952 }
953
954 color_primaries = avio_rb16(pb);
955 color_trc = avio_rb16(pb);
956 color_matrix = avio_rb16(pb);
957
958 av_dlog(c->fc, "%s: pri %d trc %d matrix %d",
959 color_parameter_type, color_primaries, color_trc, color_matrix);
960
961 if (c->isom) {
962 uint8_t color_range = avio_r8(pb) >> 7;
963 av_dlog(c->fc, " full %"PRIu8"", color_range);
964 if (color_range)
965 st->codec->color_range = AVCOL_RANGE_JPEG;
966 else
967 st->codec->color_range = AVCOL_RANGE_MPEG;
968 /* 14496-12 references JPEG XR specs (rather than the more complete
969 * 23001-8) so some adjusting is required */
970 if (color_primaries >= AVCOL_PRI_FILM)
971 color_primaries = AVCOL_PRI_UNSPECIFIED;
972 if ((color_trc >= AVCOL_TRC_LINEAR &&
973 color_trc <= AVCOL_TRC_LOG_SQRT) ||
974 color_trc >= AVCOL_TRC_BT2020_10)
975 color_trc = AVCOL_TRC_UNSPECIFIED;
976 if (color_matrix >= AVCOL_SPC_BT2020_NCL)
977 color_matrix = AVCOL_SPC_UNSPECIFIED;
978 st->codec->color_primaries = color_primaries;
979 st->codec->color_trc = color_trc;
980 st->codec->colorspace = color_matrix;
981 } else {
982 /* color primaries, Table 4-4 */
983 switch (color_primaries) {
984 case 1: st->codec->color_primaries = AVCOL_PRI_BT709; break;
985 case 5: st->codec->color_primaries = AVCOL_PRI_SMPTE170M; break;
986 case 6: st->codec->color_primaries = AVCOL_PRI_SMPTE240M; break;
987 }
988 /* color transfer, Table 4-5 */
989 switch (color_trc) {
990 case 1: st->codec->color_trc = AVCOL_TRC_BT709; break;
991 case 7: st->codec->color_trc = AVCOL_TRC_SMPTE240M; break;
992 }
993 /* color matrix, Table 4-6 */
994 switch (color_matrix) {
995 case 1: st->codec->colorspace = AVCOL_SPC_BT709; break;
996 case 6: st->codec->colorspace = AVCOL_SPC_BT470BG; break;
997 case 7: st->codec->colorspace = AVCOL_SPC_SMPTE240M; break;
998 }
999 }
1000 av_dlog(c->fc, "\n");
1001
1002 return 0;
1003}
1004
2ba45a60
DM		 1005static int mov_read_fiel(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1006{
1007 AVStream *st;
1008 unsigned mov_field_order;
1009 enum AVFieldOrder decoded_field_order = AV_FIELD_UNKNOWN;
1010
1011 if (c->fc->nb_streams < 1) // will happen with jp2 files
1012 return 0;
1013 st = c->fc->streams[c->fc->nb_streams-1];
1014 if (atom.size < 2)
1015 return AVERROR_INVALIDDATA;
1016 mov_field_order = avio_rb16(pb);
1017 if ((mov_field_order & 0xFF00) == 0x0100)
1018 decoded_field_order = AV_FIELD_PROGRESSIVE;
1019 else if ((mov_field_order & 0xFF00) == 0x0200) {
1020 switch (mov_field_order & 0xFF) {
1021 case 0x01: decoded_field_order = AV_FIELD_TT;
1022 break;
1023 case 0x06: decoded_field_order = AV_FIELD_BB;
1024 break;
1025 case 0x09: decoded_field_order = AV_FIELD_TB;
1026 break;
1027 case 0x0E: decoded_field_order = AV_FIELD_BT;
1028 break;
1029 }
1030 }
1031 if (decoded_field_order == AV_FIELD_UNKNOWN && mov_field_order) {
1032 av_log(NULL, AV_LOG_ERROR, "Unknown MOV field order 0x%04x\n", mov_field_order);
1033 }
1034 st->codec->field_order = decoded_field_order;
1035
1036 return 0;
1037}
1038
1039/* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
1040static int mov_read_extradata(MOVContext *c, AVIOContext *pb, MOVAtom atom,
1041 enum AVCodecID codec_id)
1042{
1043 AVStream *st;
1044 uint64_t size;
1045 uint8_t *buf;
1046 int err;
1047
1048 if (c->fc->nb_streams < 1) // will happen with jp2 files
1049 return 0;
1050 st= c->fc->streams[c->fc->nb_streams-1];
1051
1052 if (st->codec->codec_id != codec_id)
1053 return 0; /* unexpected codec_id - don't mess with extradata */
1054
1055 size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
1056 if (size > INT_MAX || (uint64_t)atom.size > INT_MAX)
1057 return AVERROR_INVALIDDATA;
1058 if ((err = av_reallocp(&st->codec->extradata, size)) < 0) {
1059 st->codec->extradata_size = 0;
1060 return err;
1061 }
1062 buf = st->codec->extradata + st->codec->extradata_size;
1063 st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE;
1064 AV_WB32( buf , atom.size + 8);
1065 AV_WL32( buf + 4, atom.type);
1066 err = avio_read(pb, buf + 8, atom.size);
1067 if (err < 0) {
1068 return err;
1069 } else if (err < atom.size) {
1070 av_log(c->fc, AV_LOG_WARNING, "truncated extradata\n");
1071 st->codec->extradata_size -= atom.size - err;
1072 }
1073 memset(buf + 8 + err, 0, FF_INPUT_BUFFER_PADDING_SIZE);
1074 return 0;
1075}
1076
1077/* wrapper functions for reading ALAC/AVS/MJPEG/MJPEG2000 extradata atoms only for those codecs */
1078static int mov_read_alac(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1079{
1080 return mov_read_extradata(c, pb, atom, AV_CODEC_ID_ALAC);
1081}
1082
1083static int mov_read_avss(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1084{
1085 return mov_read_extradata(c, pb, atom, AV_CODEC_ID_AVS);
1086}
1087
1088static int mov_read_jp2h(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1089{
1090 return mov_read_extradata(c, pb, atom, AV_CODEC_ID_JPEG2000);
1091}
1092
1093static int mov_read_avid(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1094{
1095 int ret = mov_read_extradata(c, pb, atom, AV_CODEC_ID_AVUI);
1096 if(ret == 0)
1097 ret = mov_read_extradata(c, pb, atom, AV_CODEC_ID_DNXHD);
1098 return ret;
1099}
1100
1101static int mov_read_targa_y216(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1102{
1103 int ret = mov_read_extradata(c, pb, atom, AV_CODEC_ID_TARGA_Y216);
1104
1105 if (!ret && c->fc->nb_streams >= 1) {
1106 AVCodecContext *avctx = c->fc->streams[c->fc->nb_streams-1]->codec;
1107 if (avctx->extradata_size >= 40) {
1108 avctx->height = AV_RB16(&avctx->extradata[36]);
1109 avctx->width = AV_RB16(&avctx->extradata[38]);
1110 }
1111 }
1112 return ret;
1113}
1114
1115static int mov_read_ares(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1116{
1117 if (c->fc->nb_streams >= 1) {
1118 AVCodecContext *codec = c->fc->streams[c->fc->nb_streams-1]->codec;
1119 if (codec->codec_tag == MKTAG('A', 'V', 'i', 'n') &&
1120 codec->codec_id == AV_CODEC_ID_H264 &&
1121 atom.size > 11) {
1122 avio_skip(pb, 10);
1123 /* For AVID AVCI50, force width of 1440 to be able to select the correct SPS and PPS */
1124 if (avio_rb16(pb) == 0xd4d)
1125 codec->width = 1440;
1126 return 0;
1127 }
1128 }
1129
1130 return mov_read_avid(c, pb, atom);
1131}
1132
1133static int mov_read_svq3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1134{
1135 return mov_read_extradata(c, pb, atom, AV_CODEC_ID_SVQ3);
1136}
1137
1138static int mov_read_wave(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1139{
1140 AVStream *st;
1141
1142 if (c->fc->nb_streams < 1)
1143 return 0;
1144 st = c->fc->streams[c->fc->nb_streams-1];
1145
1146 if ((uint64_t)atom.size > (1<<30))
1147 return AVERROR_INVALIDDATA;
1148
1149 if (st->codec->codec_id == AV_CODEC_ID_QDM2 ||
1150 st->codec->codec_id == AV_CODEC_ID_QDMC ||
1151 st->codec->codec_id == AV_CODEC_ID_SPEEX) {
1152 // pass all frma atom to codec, needed at least for QDMC and QDM2
1153 av_free(st->codec->extradata);
1154 if (ff_get_extradata(st->codec, pb, atom.size) < 0)
1155 return AVERROR(ENOMEM);
1156 } else if (atom.size > 8) { /* to read frma, esds atoms */
1157 int ret;
1158 if ((ret = mov_read_default(c, pb, atom)) < 0)
1159 return ret;
1160 } else
1161 avio_skip(pb, atom.size);
1162 return 0;
1163}
1164
1165/**
1166 * This function reads atom content and puts data in extradata without tag
1167 * nor size unlike mov_read_extradata.
1168 */
1169static int mov_read_glbl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1170{
1171 AVStream *st;
1172
1173 if (c->fc->nb_streams < 1)
1174 return 0;
1175 st = c->fc->streams[c->fc->nb_streams-1];
1176
1177 if ((uint64_t)atom.size > (1<<30))
1178 return AVERROR_INVALIDDATA;
1179
1180 if (atom.size >= 10) {
1181 // Broken files created by legacy versions of libavformat will
1182 // wrap a whole fiel atom inside of a glbl atom.
1183 unsigned size = avio_rb32(pb);
1184 unsigned type = avio_rl32(pb);
1185 avio_seek(pb, -8, SEEK_CUR);
1186 if (type == MKTAG('f','i','e','l') && size == atom.size)
1187 return mov_read_default(c, pb, atom);
1188 }
f6fa7814
DM		 1189 if (st->codec->extradata_size > 1 && st->codec->extradata) {
1190 av_log(c, AV_LOG_WARNING, "ignoring multiple glbl\n");
1191 return 0;
1192 }
2ba45a60
DM		 1193 av_free(st->codec->extradata);
1194 if (ff_get_extradata(st->codec, pb, atom.size) < 0)
1195 return AVERROR(ENOMEM);
1196
1197 return 0;
1198}
1199
1200static int mov_read_dvc1(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1201{
1202 AVStream *st;
1203 uint8_t profile_level;
1204 int ret;
1205
1206 if (c->fc->nb_streams < 1)
1207 return 0;
1208 st = c->fc->streams[c->fc->nb_streams-1];
1209
1210 if (atom.size >= (1<<28) || atom.size < 7)
1211 return AVERROR_INVALIDDATA;
1212
1213 profile_level = avio_r8(pb);
1214 if ((profile_level & 0xf0) != 0xc0)
1215 return 0;
1216
1217 avio_seek(pb, 6, SEEK_CUR);
1218 av_free(st->codec->extradata);
1219 if ((ret = ff_get_extradata(st->codec, pb, atom.size - 7)) < 0)
1220 return ret;
1221
1222 return 0;
1223}
1224
1225/**
1226 * An strf atom is a BITMAPINFOHEADER struct. This struct is 40 bytes itself,
1227 * but can have extradata appended at the end after the 40 bytes belonging
1228 * to the struct.
1229 */
1230static int mov_read_strf(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1231{
1232 AVStream *st;
1233
1234 if (c->fc->nb_streams < 1)
1235 return 0;
1236 if (atom.size <= 40)
1237 return 0;
1238 st = c->fc->streams[c->fc->nb_streams-1];
1239
1240 if ((uint64_t)atom.size > (1<<30))
1241 return AVERROR_INVALIDDATA;
1242
1243 avio_skip(pb, 40);
1244 av_free(st->codec->extradata);
1245 if (ff_get_extradata(st->codec, pb, atom.size - 40) < 0)
1246 return AVERROR(ENOMEM);
1247 return 0;
1248}
1249
1250static int mov_read_stco(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1251{
1252 AVStream *st;
1253 MOVStreamContext *sc;
1254 unsigned int i, entries;
1255
1256 if (c->fc->nb_streams < 1)
1257 return 0;
1258 st = c->fc->streams[c->fc->nb_streams-1];
1259 sc = st->priv_data;
1260
1261 avio_r8(pb); /* version */
1262 avio_rb24(pb); /* flags */
1263
1264 entries = avio_rb32(pb);
1265
1266 if (!entries)
1267 return 0;
2ba45a60 1268
f6fa7814
DM		 1269 if (sc->chunk_offsets)
1270 av_log(c->fc, AV_LOG_WARNING, "Duplicated STCO atom\n");
1271 av_free(sc->chunk_offsets);
1272 sc->chunk_count = 0;
1273 sc->chunk_offsets = av_malloc_array(entries, sizeof(*sc->chunk_offsets));
2ba45a60
DM		 1274 if (!sc->chunk_offsets)
1275 return AVERROR(ENOMEM);
1276 sc->chunk_count = entries;
1277
1278 if (atom.type == MKTAG('s','t','c','o'))
1279 for (i = 0; i < entries && !pb->eof_reached; i++)
1280 sc->chunk_offsets[i] = avio_rb32(pb);
1281 else if (atom.type == MKTAG('c','o','6','4'))
1282 for (i = 0; i < entries && !pb->eof_reached; i++)
1283 sc->chunk_offsets[i] = avio_rb64(pb);
1284 else
1285 return AVERROR_INVALIDDATA;
1286
1287 sc->chunk_count = i;
1288
1289 if (pb->eof_reached)
1290 return AVERROR_EOF;
1291
1292 return 0;
1293}
1294
1295/**
1296 * Compute codec id for 'lpcm' tag.
1297 * See CoreAudioTypes and AudioStreamBasicDescription at Apple.
1298 */
1299enum AVCodecID ff_mov_get_lpcm_codec_id(int bps, int flags)
1300{
1301 /* lpcm flags:
1302 * 0x1 = float
1303 * 0x2 = big-endian
1304 * 0x4 = signed
1305 */
1306 return ff_get_pcm_codec_id(bps, flags & 1, flags & 2, flags & 4 ? -1 : 0);
1307}
1308
1309static int mov_codec_id(AVStream *st, uint32_t format)
1310{
1311 int id = ff_codec_get_id(ff_codec_movaudio_tags, format);
1312
1313 if (id <= 0 &&
1314 ((format & 0xFFFF) == 'm' + ('s' << 8) ||
1315 (format & 0xFFFF) == 'T' + ('S' << 8)))
1316 id = ff_codec_get_id(ff_codec_wav_tags, av_bswap32(format) & 0xFFFF);
1317
1318 if (st->codec->codec_type != AVMEDIA_TYPE_VIDEO && id > 0) {
1319 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
1320 } else if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO &&
1321 /* skip old asf mpeg4 tag */
1322 format && format != MKTAG('m','p','4','s')) {
1323 id = ff_codec_get_id(ff_codec_movvideo_tags, format);
1324 if (id <= 0)
1325 id = ff_codec_get_id(ff_codec_bmp_tags, format);
1326 if (id > 0)
1327 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
1328 else if (st->codec->codec_type == AVMEDIA_TYPE_DATA ||
1329 (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE &&
1330 st->codec->codec_id == AV_CODEC_ID_NONE)) {
1331 id = ff_codec_get_id(ff_codec_movsubtitle_tags, format);
1332 if (id > 0)
1333 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
1334 }
1335 }
1336
1337 st->codec->codec_tag = format;
1338
1339 return id;
1340}
1341
1342static void mov_parse_stsd_video(MOVContext *c, AVIOContext *pb,
1343 AVStream *st, MOVStreamContext *sc)
1344{
1345 uint8_t codec_name[32];
1346 unsigned int color_depth, len, j;
1347 int color_greyscale;
1348 int color_table_id;
1349
1350 avio_rb16(pb); /* version */
1351 avio_rb16(pb); /* revision level */
1352 avio_rb32(pb); /* vendor */
1353 avio_rb32(pb); /* temporal quality */
1354 avio_rb32(pb); /* spatial quality */
1355
1356 st->codec->width = avio_rb16(pb); /* width */
1357 st->codec->height = avio_rb16(pb); /* height */
1358
1359 avio_rb32(pb); /* horiz resolution */
1360 avio_rb32(pb); /* vert resolution */
1361 avio_rb32(pb); /* data size, always 0 */
1362 avio_rb16(pb); /* frames per samples */
1363
1364 len = avio_r8(pb); /* codec name, pascal string */
1365 if (len > 31)
1366 len = 31;
1367 mov_read_mac_string(c, pb, len, codec_name, sizeof(codec_name));
1368 if (len < 31)
1369 avio_skip(pb, 31 - len);
1370
1371 if (codec_name[0])
1372 av_dict_set(&st->metadata, "encoder", codec_name, 0);
1373
1374 /* codec_tag YV12 triggers an UV swap in rawdec.c */
1375 if (!memcmp(codec_name, "Planar Y'CbCr 8-bit 4:2:0", 25)) {
1376 st->codec->codec_tag = MKTAG('I', '4', '2', '0');
1377 st->codec->width &= ~1;
1378 st->codec->height &= ~1;
1379 }
1380 /* Flash Media Server uses tag H263 with Sorenson Spark */
1381 if (st->codec->codec_tag == MKTAG('H','2','6','3') &&
1382 !memcmp(codec_name, "Sorenson H263", 13))
1383 st->codec->codec_id = AV_CODEC_ID_FLV1;
1384
1385 st->codec->bits_per_coded_sample = avio_rb16(pb); /* depth */
1386 color_table_id = avio_rb16(pb); /* colortable id */
1387 av_dlog(c->fc, "depth %d, ctab id %d\n",
1388 st->codec->bits_per_coded_sample, color_table_id);
1389 /* figure out the palette situation */
1390 color_depth = st->codec->bits_per_coded_sample & 0x1F;
1391 color_greyscale = st->codec->bits_per_coded_sample & 0x20;
1392 /* Do not create a greyscale palette for cinepak */
1393 if (color_greyscale && st->codec->codec_id == AV_CODEC_ID_CINEPAK)
1394 return;
1395
1396 /* if the depth is 2, 4, or 8 bpp, file is palettized */
1397 if ((color_depth == 2) || (color_depth == 4) || (color_depth == 8)) {
1398 /* for palette traversal */
1399 unsigned int color_start, color_count, color_end;
1400 unsigned char a, r, g, b;
1401
1402 if (color_greyscale) {
1403 int color_index, color_dec;
1404 /* compute the greyscale palette */
1405 st->codec->bits_per_coded_sample = color_depth;
1406 color_count = 1 << color_depth;
1407 color_index = 255;
1408 color_dec = 256 / (color_count - 1);
1409 for (j = 0; j < color_count; j++) {
1410 r = g = b = color_index;
1411 sc->palette[j] = (0xFFU << 24) | (r << 16) | (g << 8) | (b);
1412 color_index -= color_dec;
1413 if (color_index < 0)
1414 color_index = 0;
1415 }
1416 } else if (color_table_id) {
1417 const uint8_t *color_table;
1418 /* if flag bit 3 is set, use the default palette */
1419 color_count = 1 << color_depth;
1420 if (color_depth == 2)
1421 color_table = ff_qt_default_palette_4;
1422 else if (color_depth == 4)
1423 color_table = ff_qt_default_palette_16;
1424 else
1425 color_table = ff_qt_default_palette_256;
1426
1427 for (j = 0; j < color_count; j++) {
1428 r = color_table[j * 3 + 0];
1429 g = color_table[j * 3 + 1];
1430 b = color_table[j * 3 + 2];
1431 sc->palette[j] = (0xFFU << 24) | (r << 16) | (g << 8) | (b);
1432 }
1433 } else {
1434 /* load the palette from the file */
1435 color_start = avio_rb32(pb);
1436 color_count = avio_rb16(pb);
1437 color_end = avio_rb16(pb);
1438 if ((color_start <= 255) && (color_end <= 255)) {
1439 for (j = color_start; j <= color_end; j++) {
1440 /* each A, R, G, or B component is 16 bits;
1441 * only use the top 8 bits */
1442 a = avio_r8(pb);
1443 avio_r8(pb);
1444 r = avio_r8(pb);
1445 avio_r8(pb);
1446 g = avio_r8(pb);
1447 avio_r8(pb);
1448 b = avio_r8(pb);
1449 avio_r8(pb);
1450 sc->palette[j] = (a << 24 ) | (r << 16) | (g << 8) | (b);
1451 }
1452 }
1453 }
1454 sc->has_palette = 1;
1455 }
1456}
1457
1458static void mov_parse_stsd_audio(MOVContext *c, AVIOContext *pb,
1459 AVStream *st, MOVStreamContext *sc)
1460{
1461 int bits_per_sample, flags;
1462 uint16_t version = avio_rb16(pb);
1463 AVDictionaryEntry *compatible_brands = av_dict_get(c->fc->metadata, "compatible_brands", NULL, AV_DICT_MATCH_CASE);
1464
1465 avio_rb16(pb); /* revision level */
1466 avio_rb32(pb); /* vendor */
1467
1468 st->codec->channels = avio_rb16(pb); /* channel count */
1469 st->codec->bits_per_coded_sample = avio_rb16(pb); /* sample size */
1470 av_dlog(c->fc, "audio channels %d\n", st->codec->channels);
1471
1472 sc->audio_cid = avio_rb16(pb);
1473 avio_rb16(pb); /* packet size = 0 */
1474
1475 st->codec->sample_rate = ((avio_rb32(pb) >> 16));
1476
1477 // Read QT version 1 fields. In version 0 these do not exist.
1478 av_dlog(c->fc, "version =%d, isom =%d\n", version, c->isom);
1479 if (!c->isom ||
1480 (compatible_brands && strstr(compatible_brands->value, "qt "))) {
1481
1482 if (version == 1) {
1483 sc->samples_per_frame = avio_rb32(pb);
1484 avio_rb32(pb); /* bytes per packet */
1485 sc->bytes_per_frame = avio_rb32(pb);
1486 avio_rb32(pb); /* bytes per sample */
1487 } else if (version == 2) {
1488 avio_rb32(pb); /* sizeof struct only */
1489 st->codec->sample_rate = av_int2double(avio_rb64(pb));
1490 st->codec->channels = avio_rb32(pb);
1491 avio_rb32(pb); /* always 0x7F000000 */
1492 st->codec->bits_per_coded_sample = avio_rb32(pb);
1493
1494 flags = avio_rb32(pb); /* lpcm format specific flag */
1495 sc->bytes_per_frame = avio_rb32(pb);
1496 sc->samples_per_frame = avio_rb32(pb);
1497 if (st->codec->codec_tag == MKTAG('l','p','c','m'))
1498 st->codec->codec_id =
1499 ff_mov_get_lpcm_codec_id(st->codec->bits_per_coded_sample,
1500 flags);
1501 }
1502 }
1503
1504 switch (st->codec->codec_id) {
1505 case AV_CODEC_ID_PCM_S8:
1506 case AV_CODEC_ID_PCM_U8:
1507 if (st->codec->bits_per_coded_sample == 16)
1508 st->codec->codec_id = AV_CODEC_ID_PCM_S16BE;
1509 break;
1510 case AV_CODEC_ID_PCM_S16LE:
1511 case AV_CODEC_ID_PCM_S16BE:
1512 if (st->codec->bits_per_coded_sample == 8)
1513 st->codec->codec_id = AV_CODEC_ID_PCM_S8;
1514 else if (st->codec->bits_per_coded_sample == 24)
1515 st->codec->codec_id =
1516 st->codec->codec_id == AV_CODEC_ID_PCM_S16BE ?
1517 AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE;
f6fa7814
DM		 1518 else if (st->codec->bits_per_coded_sample == 32)
1519 st->codec->codec_id =
1520 st->codec->codec_id == AV_CODEC_ID_PCM_S16BE ?
1521 AV_CODEC_ID_PCM_S32BE : AV_CODEC_ID_PCM_S32LE;
2ba45a60
DM		 1522 break;
1523 /* set values for old format before stsd version 1 appeared */
1524 case AV_CODEC_ID_MACE3:
1525 sc->samples_per_frame = 6;
1526 sc->bytes_per_frame = 2 * st->codec->channels;
1527 break;
1528 case AV_CODEC_ID_MACE6:
1529 sc->samples_per_frame = 6;
1530 sc->bytes_per_frame = 1 * st->codec->channels;
1531 break;
1532 case AV_CODEC_ID_ADPCM_IMA_QT:
1533 sc->samples_per_frame = 64;
1534 sc->bytes_per_frame = 34 * st->codec->channels;
1535 break;
1536 case AV_CODEC_ID_GSM:
1537 sc->samples_per_frame = 160;
1538 sc->bytes_per_frame = 33;
1539 break;
1540 default:
1541 break;
1542 }
1543
1544 bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
1545 if (bits_per_sample) {
1546 st->codec->bits_per_coded_sample = bits_per_sample;
1547 sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
1548 }
1549}
1550
1551static void mov_parse_stsd_subtitle(MOVContext *c, AVIOContext *pb,
1552 AVStream *st, MOVStreamContext *sc,
1553 int size)
1554{
1555 // ttxt stsd contains display flags, justification, background
1556 // color, fonts, and default styles, so fake an atom to read it
1557 MOVAtom fake_atom = { .size = size };
1558 // mp4s contains a regular esds atom
1559 if (st->codec->codec_tag != AV_RL32("mp4s"))
1560 mov_read_glbl(c, pb, fake_atom);
1561 st->codec->width = sc->width;
1562 st->codec->height = sc->height;
1563}
1564
1565static uint32_t yuv_to_rgba(uint32_t ycbcr)
1566{
1567 uint8_t r, g, b;
1568 int y, cb, cr;
1569
1570 y = (ycbcr >> 16) & 0xFF;
1571 cr = (ycbcr >> 8) & 0xFF;
1572 cb = ycbcr & 0xFF;
1573
1574 b = av_clip_uint8(1.164 * (y - 16) + 2.018 * (cb - 128));
1575 g = av_clip_uint8(1.164 * (y - 16) - 0.813 * (cr - 128) - 0.391 * (cb - 128));
1576 r = av_clip_uint8(1.164 * (y - 16) + 1.596 * (cr - 128));
1577
1578 return (r << 16) | (g << 8) | b;
1579}
1580
1581static int mov_rewrite_dvd_sub_extradata(AVStream *st)
1582{
1583 char buf[256] = {0};
1584 uint8_t *src = st->codec->extradata;
1585 int i;
1586
1587 if (st->codec->extradata_size != 64)
1588 return 0;
1589
1590 if (st->codec->width > 0 && st->codec->height > 0)
1591 snprintf(buf, sizeof(buf), "size: %dx%d\n",
1592 st->codec->width, st->codec->height);
1593 av_strlcat(buf, "palette: ", sizeof(buf));
1594
1595 for (i = 0; i < 16; i++) {
1596 uint32_t yuv = AV_RB32(src + i * 4);
1597 uint32_t rgba = yuv_to_rgba(yuv);
1598
1599 av_strlcatf(buf, sizeof(buf), "%06"PRIx32"%s", rgba, i != 15 ? ", " : "");
1600 }
1601
1602 if (av_strlcat(buf, "\n", sizeof(buf)) >= sizeof(buf))
1603 return 0;
1604
1605 av_freep(&st->codec->extradata);
1606 st->codec->extradata_size = 0;
1607 st->codec->extradata = av_mallocz(strlen(buf) + FF_INPUT_BUFFER_PADDING_SIZE);
1608 if (!st->codec->extradata)
1609 return AVERROR(ENOMEM);
1610 st->codec->extradata_size = strlen(buf);
1611 memcpy(st->codec->extradata, buf, st->codec->extradata_size);
1612
1613 return 0;
1614}
1615
1616static int mov_parse_stsd_data(MOVContext *c, AVIOContext *pb,
1617 AVStream *st, MOVStreamContext *sc,
1618 int size)
1619{
1620 if (st->codec->codec_tag == MKTAG('t','m','c','d')) {
1621 if (ff_get_extradata(st->codec, pb, size) < 0)
1622 return AVERROR(ENOMEM);
1623 if (size > 16) {
1624 MOVStreamContext *tmcd_ctx = st->priv_data;
1625 int val;
1626 val = AV_RB32(st->codec->extradata + 4);
1627 tmcd_ctx->tmcd_flags = val;
1628 if (val & 1)
1629 st->codec->flags2 |= CODEC_FLAG2_DROP_FRAME_TIMECODE;
1630 st->codec->time_base.den = st->codec->extradata[16]; /* number of frame */
1631 st->codec->time_base.num = 1;
1632 if (size > 30) {
1633 uint32_t len = AV_RB32(st->codec->extradata + 18); /* name atom length */
1634 uint32_t format = AV_RB32(st->codec->extradata + 22);
1635 if (format == AV_RB32("name") && (int64_t)size >= (int64_t)len + 18) {
1636 uint16_t str_size = AV_RB16(st->codec->extradata + 26); /* string length */
1637 if (str_size > 0 && size >= (int)str_size + 26) {
1638 char *reel_name = av_malloc(str_size + 1);
1639 if (!reel_name)
1640 return AVERROR(ENOMEM);
1641 memcpy(reel_name, st->codec->extradata + 30, str_size);
1642 reel_name[str_size] = 0; /* Add null terminator */
1643 /* don't add reel_name if emtpy string */
1644 if (*reel_name == 0) {
1645 av_free(reel_name);
1646 } else {
1647 av_dict_set(&st->metadata, "reel_name", reel_name, AV_DICT_DONT_STRDUP_VAL);
1648 }
1649 }
1650 }
1651 }
1652 }
1653 } else {
1654 /* other codec type, just skip (rtp, mp4s ...) */
1655 avio_skip(pb, size);
1656 }
1657 return 0;
1658}
1659
1660static int mov_finalize_stsd_codec(MOVContext *c, AVIOContext *pb,
1661 AVStream *st, MOVStreamContext *sc)
1662{
1663 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
1664 !st->codec->sample_rate && sc->time_scale > 1)
1665 st->codec->sample_rate = sc->time_scale;
1666
1667 /* special codec parameters handling */
1668 switch (st->codec->codec_id) {
1669#if CONFIG_DV_DEMUXER
1670 case AV_CODEC_ID_DVAUDIO:
1671 c->dv_fctx = avformat_alloc_context();
1672 c->dv_demux = avpriv_dv_init_demux(c->dv_fctx);
1673 if (!c->dv_demux) {
1674 av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
1675 return AVERROR(ENOMEM);
1676 }
1677 sc->dv_audio_container = 1;
1678 st->codec->codec_id = AV_CODEC_ID_PCM_S16LE;
1679 break;
1680#endif
1681 /* no ifdef since parameters are always those */
1682 case AV_CODEC_ID_QCELP:
1683 st->codec->channels = 1;
1684 // force sample rate for qcelp when not stored in mov
1685 if (st->codec->codec_tag != MKTAG('Q','c','l','p'))
1686 st->codec->sample_rate = 8000;
1687 // FIXME: Why is the following needed for some files?
1688 sc->samples_per_frame = 160;
1689 if (!sc->bytes_per_frame)
1690 sc->bytes_per_frame = 35;
1691 break;
1692 case AV_CODEC_ID_AMR_NB:
1693 st->codec->channels = 1;
1694 /* force sample rate for amr, stsd in 3gp does not store sample rate */
1695 st->codec->sample_rate = 8000;
1696 break;
1697 case AV_CODEC_ID_AMR_WB:
1698 st->codec->channels = 1;
1699 st->codec->sample_rate = 16000;
1700 break;
1701 case AV_CODEC_ID_MP2:
1702 case AV_CODEC_ID_MP3:
1703 /* force type after stsd for m1a hdlr */
1704 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
1705 st->need_parsing = AVSTREAM_PARSE_FULL;
1706 break;
1707 case AV_CODEC_ID_GSM:
1708 case AV_CODEC_ID_ADPCM_MS:
1709 case AV_CODEC_ID_ADPCM_IMA_WAV:
1710 case AV_CODEC_ID_ILBC:
1711 case AV_CODEC_ID_MACE3:
1712 case AV_CODEC_ID_MACE6:
1713 case AV_CODEC_ID_QDM2:
1714 st->codec->block_align = sc->bytes_per_frame;
1715 break;
1716 case AV_CODEC_ID_ALAC:
1717 if (st->codec->extradata_size == 36) {
1718 st->codec->channels = AV_RB8 (st->codec->extradata + 21);
1719 st->codec->sample_rate = AV_RB32(st->codec->extradata + 32);
1720 }
1721 break;
1722 case AV_CODEC_ID_AC3:
f6fa7814 1723 case AV_CODEC_ID_EAC3:
2ba45a60
DM		 1724 case AV_CODEC_ID_MPEG1VIDEO:
1725 case AV_CODEC_ID_VC1:
1726 st->need_parsing = AVSTREAM_PARSE_FULL;
1727 break;
1728 default:
1729 break;
1730 }
1731 return 0;
1732}
1733
1734static int mov_skip_multiple_stsd(MOVContext *c, AVIOContext *pb,
1735 int codec_tag, int format,
1736 int64_t size)
1737{
1738 int video_codec_id = ff_codec_get_id(ff_codec_movvideo_tags, format);
1739
1740 if (codec_tag &&
1741 (codec_tag != format &&
1742 (c->fc->video_codec_id ? video_codec_id != c->fc->video_codec_id
1743 : codec_tag != MKTAG('j','p','e','g')))) {
1744 /* Multiple fourcc, we skip JPEG. This is not correct, we should
1745 * export it as a separate AVStream but this needs a few changes
1746 * in the MOV demuxer, patch welcome. */
1747
1748 av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n");
1749 avio_skip(pb, size);
1750 return 1;
1751 }
1752 if ( codec_tag == AV_RL32("avc1") ||
1753 codec_tag == AV_RL32("hvc1") ||
1754 codec_tag == AV_RL32("hev1")
1755 )
1756 av_log(c->fc, AV_LOG_WARNING, "Concatenated H.264 or H.265 might not play correctly.\n");
1757
1758 return 0;
1759}
1760
1761int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries)
1762{
1763 AVStream *st;
1764 MOVStreamContext *sc;
1765 int pseudo_stream_id;
1766
1767 if (c->fc->nb_streams < 1)
1768 return 0;
1769 st = c->fc->streams[c->fc->nb_streams-1];
1770 sc = st->priv_data;
1771
1772 for (pseudo_stream_id = 0;
1773 pseudo_stream_id < entries && !pb->eof_reached;
1774 pseudo_stream_id++) {
1775 //Parsing Sample description table
1776 enum AVCodecID id;
1777 int ret, dref_id = 1;
1778 MOVAtom a = { AV_RL32("stsd") };
1779 int64_t start_pos = avio_tell(pb);
1780 int64_t size = avio_rb32(pb); /* size */
1781 uint32_t format = avio_rl32(pb); /* data format */
1782
1783 if (size >= 16) {
1784 avio_rb32(pb); /* reserved */
1785 avio_rb16(pb); /* reserved */
1786 dref_id = avio_rb16(pb);
1787 }else if (size <= 7){
1788 av_log(c->fc, AV_LOG_ERROR, "invalid size %"PRId64" in stsd\n", size);
1789 return AVERROR_INVALIDDATA;
1790 }
1791
1792 if (mov_skip_multiple_stsd(c, pb, st->codec->codec_tag, format,
1793 size - (avio_tell(pb) - start_pos)))
1794 continue;
1795
1796 sc->pseudo_stream_id = st->codec->codec_tag ? -1 : pseudo_stream_id;
1797 sc->dref_id= dref_id;
1798
1799 id = mov_codec_id(st, format);
1800
1801 av_dlog(c->fc, "size=%"PRId64" 4CC= %c%c%c%c codec_type=%d\n", size,
1802 (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff,
1803 (format >> 24) & 0xff, st->codec->codec_type);
1804
1805 if (st->codec->codec_type==AVMEDIA_TYPE_VIDEO) {
1806 st->codec->codec_id = id;
1807 mov_parse_stsd_video(c, pb, st, sc);
1808 } else if (st->codec->codec_type==AVMEDIA_TYPE_AUDIO) {
1809 st->codec->codec_id = id;
1810 mov_parse_stsd_audio(c, pb, st, sc);
1811 } else if (st->codec->codec_type==AVMEDIA_TYPE_SUBTITLE){
1812 st->codec->codec_id = id;
1813 mov_parse_stsd_subtitle(c, pb, st, sc,
1814 size - (avio_tell(pb) - start_pos));
1815 } else {
1816 ret = mov_parse_stsd_data(c, pb, st, sc,
1817 size - (avio_tell(pb) - start_pos));
1818 if (ret < 0)
1819 return ret;
1820 }
1821 /* this will read extra atoms at the end (wave, alac, damr, avcC, hvcC, SMI ...) */
1822 a.size = size - (avio_tell(pb) - start_pos);
1823 if (a.size > 8) {
1824 if ((ret = mov_read_default(c, pb, a)) < 0)
1825 return ret;
1826 } else if (a.size > 0)
1827 avio_skip(pb, a.size);
1828 }
1829
1830 if (pb->eof_reached)
1831 return AVERROR_EOF;
1832
1833 return mov_finalize_stsd_codec(c, pb, st, sc);
1834}
1835
1836static int mov_read_stsd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1837{
1838 int entries;
1839
1840 avio_r8(pb); /* version */
1841 avio_rb24(pb); /* flags */
1842 entries = avio_rb32(pb);
1843
1844 return ff_mov_read_stsd_entries(c, pb, entries);
1845}
1846
1847static int mov_read_stsc(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1848{
1849 AVStream *st;
1850 MOVStreamContext *sc;
1851 unsigned int i, entries;
1852
1853 if (c->fc->nb_streams < 1)
1854 return 0;
1855 st = c->fc->streams[c->fc->nb_streams-1];
1856 sc = st->priv_data;
1857
1858 avio_r8(pb); /* version */
1859 avio_rb24(pb); /* flags */
1860
1861 entries = avio_rb32(pb);
1862
1863 av_dlog(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
1864
1865 if (!entries)
1866 return 0;
f6fa7814
DM		 1867 if (sc->stsc_data)
1868 av_log(c->fc, AV_LOG_WARNING, "Duplicated STSC atom\n");
1869 av_free(sc->stsc_data);
1870 sc->stsc_count = 0;
1871 sc->stsc_data = av_malloc_array(entries, sizeof(*sc->stsc_data));
2ba45a60
DM		 1872 if (!sc->stsc_data)
1873 return AVERROR(ENOMEM);
1874
1875 for (i = 0; i < entries && !pb->eof_reached; i++) {
1876 sc->stsc_data[i].first = avio_rb32(pb);
1877 sc->stsc_data[i].count = avio_rb32(pb);
1878 sc->stsc_data[i].id = avio_rb32(pb);
1879 }
1880
1881 sc->stsc_count = i;
1882
1883 if (pb->eof_reached)
1884 return AVERROR_EOF;
1885
1886 return 0;
1887}
1888
1889static int mov_read_stps(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1890{
1891 AVStream *st;
1892 MOVStreamContext *sc;
1893 unsigned i, entries;
1894
1895 if (c->fc->nb_streams < 1)
1896 return 0;
1897 st = c->fc->streams[c->fc->nb_streams-1];
1898 sc = st->priv_data;
1899
1900 avio_rb32(pb); // version + flags
1901
1902 entries = avio_rb32(pb);
f6fa7814
DM		 1903 if (sc->stps_data)
1904 av_log(c->fc, AV_LOG_WARNING, "Duplicated STPS atom\n");
1905 av_free(sc->stps_data);
1906 sc->stps_count = 0;
1907 sc->stps_data = av_malloc_array(entries, sizeof(*sc->stps_data));
2ba45a60
DM		 1908 if (!sc->stps_data)
1909 return AVERROR(ENOMEM);
1910
1911 for (i = 0; i < entries && !pb->eof_reached; i++) {
1912 sc->stps_data[i] = avio_rb32(pb);
1913 //av_dlog(c->fc, "stps %d\n", sc->stps_data[i]);
1914 }
1915
1916 sc->stps_count = i;
1917
1918 if (pb->eof_reached)
1919 return AVERROR_EOF;
1920
1921 return 0;
1922}
1923
1924static int mov_read_stss(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1925{
1926 AVStream *st;
1927 MOVStreamContext *sc;
1928 unsigned int i, entries;
1929
1930 if (c->fc->nb_streams < 1)
1931 return 0;
1932 st = c->fc->streams[c->fc->nb_streams-1];
1933 sc = st->priv_data;
1934
1935 avio_r8(pb); /* version */
1936 avio_rb24(pb); /* flags */
1937
1938 entries = avio_rb32(pb);
1939
1940 av_dlog(c->fc, "keyframe_count = %d\n", entries);
1941
1942 if (!entries)
1943 {
1944 sc->keyframe_absent = 1;
1945 if (!st->need_parsing && st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
1946 st->need_parsing = AVSTREAM_PARSE_HEADERS;
1947 return 0;
1948 }
f6fa7814
DM		 1949 if (sc->keyframes)
1950 av_log(c->fc, AV_LOG_WARNING, "Duplicated STSS atom\n");
1951 av_free(sc->keyframes);
1952 sc->keyframe_count = 0;
1953 sc->keyframes = av_malloc_array(entries, sizeof(*sc->keyframes));
2ba45a60
DM		 1954 if (!sc->keyframes)
1955 return AVERROR(ENOMEM);
1956
1957 for (i = 0; i < entries && !pb->eof_reached; i++) {
1958 sc->keyframes[i] = avio_rb32(pb);
1959 //av_dlog(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
1960 }
1961
1962 sc->keyframe_count = i;
1963
1964 if (pb->eof_reached)
1965 return AVERROR_EOF;
1966
1967 return 0;
1968}
1969
1970static int mov_read_stsz(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1971{
1972 AVStream *st;
1973 MOVStreamContext *sc;
1974 unsigned int i, entries, sample_size, field_size, num_bytes;
1975 GetBitContext gb;
1976 unsigned char* buf;
1977
1978 if (c->fc->nb_streams < 1)
1979 return 0;
1980 st = c->fc->streams[c->fc->nb_streams-1];
1981 sc = st->priv_data;
1982
1983 avio_r8(pb); /* version */
1984 avio_rb24(pb); /* flags */
1985
1986 if (atom.type == MKTAG('s','t','s','z')) {
1987 sample_size = avio_rb32(pb);
1988 if (!sc->sample_size) /* do not overwrite value computed in stsd */
1989 sc->sample_size = sample_size;
1990 sc->stsz_sample_size = sample_size;
1991 field_size = 32;
1992 } else {
1993 sample_size = 0;
1994 avio_rb24(pb); /* reserved */
1995 field_size = avio_r8(pb);
1996 }
1997 entries = avio_rb32(pb);
1998
1999 av_dlog(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, entries);
2000
2001 sc->sample_count = entries;
2002 if (sample_size)
2003 return 0;
2004
2005 if (field_size != 4 && field_size != 8 && field_size != 16 && field_size != 32) {
2006 av_log(c->fc, AV_LOG_ERROR, "Invalid sample field size %d\n", field_size);
2007 return AVERROR_INVALIDDATA;
2008 }
2009
2010 if (!entries)
2011 return 0;
f6fa7814 2012 if (entries >= (UINT_MAX - 4) / field_size)
2ba45a60 2013 return AVERROR_INVALIDDATA;
f6fa7814
DM		 2014 if (sc->sample_sizes)
2015 av_log(c->fc, AV_LOG_WARNING, "Duplicated STSZ atom\n");
2016 av_free(sc->sample_sizes);
2017 sc->sample_count = 0;
2018 sc->sample_sizes = av_malloc_array(entries, sizeof(*sc->sample_sizes));
2ba45a60
DM		 2019 if (!sc->sample_sizes)
2020 return AVERROR(ENOMEM);
2021
2022 num_bytes = (entries*field_size+4)>>3;
2023
2024 buf = av_malloc(num_bytes+FF_INPUT_BUFFER_PADDING_SIZE);
2025 if (!buf) {
2026 av_freep(&sc->sample_sizes);
2027 return AVERROR(ENOMEM);
2028 }
2029
2030 if (avio_read(pb, buf, num_bytes) < num_bytes) {
2031 av_freep(&sc->sample_sizes);
2032 av_free(buf);
2033 return AVERROR_INVALIDDATA;
2034 }
2035
2036 init_get_bits(&gb, buf, 8*num_bytes);
2037
2038 for (i = 0; i < entries && !pb->eof_reached; i++) {
2039 sc->sample_sizes[i] = get_bits_long(&gb, field_size);
2040 sc->data_size += sc->sample_sizes[i];
2041 }
2042
2043 sc->sample_count = i;
2044
2045 if (pb->eof_reached)
2046 return AVERROR_EOF;
2047
2048 av_free(buf);
2049 return 0;
2050}
2051
2052static int mov_read_stts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2053{
2054 AVStream *st;
2055 MOVStreamContext *sc;
2056 unsigned int i, entries;
2057 int64_t duration=0;
2058 int64_t total_sample_count=0;
2059
2060 if (c->fc->nb_streams < 1)
2061 return 0;
2062 st = c->fc->streams[c->fc->nb_streams-1];
2063 sc = st->priv_data;
2064
2065 avio_r8(pb); /* version */
2066 avio_rb24(pb); /* flags */
2067 entries = avio_rb32(pb);
2068
2069 av_dlog(c->fc, "track[%i].stts.entries = %i\n",
2070 c->fc->nb_streams-1, entries);
2071
f6fa7814
DM		 2072 if (sc->stts_data)
2073 av_log(c->fc, AV_LOG_WARNING, "Duplicated STTS atom\n");
2ba45a60 2074 av_free(sc->stts_data);
f6fa7814
DM		 2075 sc->stts_count = 0;
2076 sc->stts_data = av_malloc_array(entries, sizeof(*sc->stts_data));
2ba45a60
DM		 2077 if (!sc->stts_data)
2078 return AVERROR(ENOMEM);
2079
2080 for (i = 0; i < entries && !pb->eof_reached; i++) {
2081 int sample_duration;
2082 int sample_count;
2083
2084 sample_count=avio_rb32(pb);
2085 sample_duration = avio_rb32(pb);
2086
2087 /* sample_duration < 0 is invalid based on the spec */
2088 if (sample_duration < 0) {
2089 av_log(c->fc, AV_LOG_ERROR, "Invalid SampleDelta %d in STTS, at %d st:%d\n",
2090 sample_duration, i, c->fc->nb_streams-1);
2091 sample_duration = 1;
2092 }
2093 if (sample_count < 0) {
2094 av_log(c->fc, AV_LOG_ERROR, "Invalid sample_count=%d\n", sample_count);
2095 return AVERROR_INVALIDDATA;
2096 }
2097 sc->stts_data[i].count= sample_count;
2098 sc->stts_data[i].duration= sample_duration;
2099
2100 av_dlog(c->fc, "sample_count=%d, sample_duration=%d\n",
2101 sample_count, sample_duration);
2102
2103 if ( i+1 == entries
2104 && i
2105 && sample_count == 1
2106 && total_sample_count > 100
2107 && sample_duration/10 > duration / total_sample_count)
2108 sample_duration = duration / total_sample_count;
2109 duration+=(int64_t)sample_duration*sample_count;
2110 total_sample_count+=sample_count;
2111 }
2112
2113 sc->stts_count = i;
2114
2115 sc->duration_for_fps += duration;
2116 sc->nb_frames_for_fps += total_sample_count;
2117
2118 if (pb->eof_reached)
2119 return AVERROR_EOF;
2120
2121 st->nb_frames= total_sample_count;
2122 if (duration)
2123 st->duration= duration;
2124 sc->track_end = duration;
2125 return 0;
2126}
2127
2128static void mov_update_dts_shift(MOVStreamContext *sc, int duration)
2129{
2130 if (duration < 0) {
2131 sc->dts_shift = FFMAX(sc->dts_shift, -duration);
2132 }
2133}
2134
2135static int mov_read_ctts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2136{
2137 AVStream *st;
2138 MOVStreamContext *sc;
2139 unsigned int i, entries;
2140
2141 if (c->fc->nb_streams < 1)
2142 return 0;
2143 st = c->fc->streams[c->fc->nb_streams-1];
2144 sc = st->priv_data;
2145
2146 avio_r8(pb); /* version */
2147 avio_rb24(pb); /* flags */
2148 entries = avio_rb32(pb);
2149
2150 av_dlog(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
2151
2152 if (!entries)
2153 return 0;
2154 if (entries >= UINT_MAX / sizeof(*sc->ctts_data))
2155 return AVERROR_INVALIDDATA;
2156 sc->ctts_data = av_malloc(entries * sizeof(*sc->ctts_data));
2157 if (!sc->ctts_data)
2158 return AVERROR(ENOMEM);
2159
2160 for (i = 0; i < entries && !pb->eof_reached; i++) {
2161 int count =avio_rb32(pb);
2162 int duration =avio_rb32(pb);
2163
2164 sc->ctts_data[i].count = count;
2165 sc->ctts_data[i].duration= duration;
2166
2167 av_dlog(c->fc, "count=%d, duration=%d\n",
2168 count, duration);
2169
2170 if (FFABS(duration) > (1<<28) && i+2<entries) {
2171 av_log(c->fc, AV_LOG_WARNING, "CTTS invalid\n");
2172 av_freep(&sc->ctts_data);
2173 sc->ctts_count = 0;
2174 return 0;
2175 }
2176
2177 if (i+2<entries)
2178 mov_update_dts_shift(sc, duration);
2179 }
2180
2181 sc->ctts_count = i;
2182
2183 if (pb->eof_reached)
2184 return AVERROR_EOF;
2185
2186 av_dlog(c->fc, "dts shift %d\n", sc->dts_shift);
2187
2188 return 0;
2189}
2190
2191static int mov_read_sbgp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2192{
2193 AVStream *st;
2194 MOVStreamContext *sc;
2195 unsigned int i, entries;
2196 uint8_t version;
2197 uint32_t grouping_type;
2198
2199 if (c->fc->nb_streams < 1)
2200 return 0;
2201 st = c->fc->streams[c->fc->nb_streams-1];
2202 sc = st->priv_data;
2203
2204 version = avio_r8(pb); /* version */
2205 avio_rb24(pb); /* flags */
2206 grouping_type = avio_rl32(pb);
2207 if (grouping_type != MKTAG( 'r','a','p',' '))
2208 return 0; /* only support 'rap ' grouping */
2209 if (version == 1)
2210 avio_rb32(pb); /* grouping_type_parameter */
2211
2212 entries = avio_rb32(pb);
2213 if (!entries)
2214 return 0;
f6fa7814
DM		 2215 if (sc->rap_group)
2216 av_log(c->fc, AV_LOG_WARNING, "Duplicated SBGP atom\n");
2217 av_free(sc->rap_group);
2218 sc->rap_group_count = 0;
2219 sc->rap_group = av_malloc_array(entries, sizeof(*sc->rap_group));
2ba45a60
DM		 2220 if (!sc->rap_group)
2221 return AVERROR(ENOMEM);
2222
2223 for (i = 0; i < entries && !pb->eof_reached; i++) {
2224 sc->rap_group[i].count = avio_rb32(pb); /* sample_count */
2225 sc->rap_group[i].index = avio_rb32(pb); /* group_description_index */
2226 }
2227
2228 sc->rap_group_count = i;
2229
2230 return pb->eof_reached ? AVERROR_EOF : 0;
2231}
2232
2233static void mov_build_index(MOVContext *mov, AVStream *st)
2234{
2235 MOVStreamContext *sc = st->priv_data;
2236 int64_t current_offset;
2237 int64_t current_dts = 0;
2238 unsigned int stts_index = 0;
2239 unsigned int stsc_index = 0;
2240 unsigned int stss_index = 0;
2241 unsigned int stps_index = 0;
2242 unsigned int i, j;
2243 uint64_t stream_size = 0;
2244
2245 /* adjust first dts according to edit list */
2246 if ((sc->empty_duration || sc->start_time) && mov->time_scale > 0) {
2247 if (sc->empty_duration)
2248 sc->empty_duration = av_rescale(sc->empty_duration, sc->time_scale, mov->time_scale);
2249 sc->time_offset = sc->start_time - sc->empty_duration;
2250 current_dts = -sc->time_offset;
2251 if (sc->ctts_count>0 && sc->stts_count>0 &&
2252 sc->ctts_data[0].duration / FFMAX(sc->stts_data[0].duration, 1) > 16) {
2253 /* more than 16 frames delay, dts are likely wrong
2254 this happens with files created by iMovie */
2255 sc->wrong_dts = 1;
2256 st->codec->has_b_frames = 1;
2257 }
2258 }
2259
2260 /* only use old uncompressed audio chunk demuxing when stts specifies it */
2261 if (!(st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
2262 sc->stts_count == 1 && sc->stts_data[0].duration == 1)) {
2263 unsigned int current_sample = 0;
2264 unsigned int stts_sample = 0;
2265 unsigned int sample_size;
2266 unsigned int distance = 0;
2267 unsigned int rap_group_index = 0;
2268 unsigned int rap_group_sample = 0;
2269 int rap_group_present = sc->rap_group_count && sc->rap_group;
2270 int key_off = (sc->keyframe_count && sc->keyframes[0] > 0) || (sc->stps_count && sc->stps_data[0] > 0);
2271
2272 current_dts -= sc->dts_shift;
2273
2274 if (!sc->sample_count || st->nb_index_entries)
2275 return;
2276 if (sc->sample_count >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries)
2277 return;
2278 if (av_reallocp_array(&st->index_entries,
2279 st->nb_index_entries + sc->sample_count,
2280 sizeof(*st->index_entries)) < 0) {
2281 st->nb_index_entries = 0;
2282 return;
2283 }
2284 st->index_entries_allocated_size = (st->nb_index_entries + sc->sample_count) * sizeof(*st->index_entries);
2285
2286 for (i = 0; i < sc->chunk_count; i++) {
2287 int64_t next_offset = i+1 < sc->chunk_count ? sc->chunk_offsets[i+1] : INT64_MAX;
2288 current_offset = sc->chunk_offsets[i];
2289 while (stsc_index + 1 < sc->stsc_count &&
2290 i + 1 == sc->stsc_data[stsc_index + 1].first)
2291 stsc_index++;
2292
2293 if (next_offset > current_offset && sc->sample_size>0 && sc->sample_size < sc->stsz_sample_size &&
2294 sc->stsc_data[stsc_index].count * (int64_t)sc->stsz_sample_size > next_offset - current_offset) {
2295 av_log(mov->fc, AV_LOG_WARNING, "STSZ sample size %d invalid (too large), ignoring\n", sc->stsz_sample_size);
2296 sc->stsz_sample_size = sc->sample_size;
2297 }
2298 if (sc->stsz_sample_size>0 && sc->stsz_sample_size < sc->sample_size) {
2299 av_log(mov->fc, AV_LOG_WARNING, "STSZ sample size %d invalid (too small), ignoring\n", sc->stsz_sample_size);
2300 sc->stsz_sample_size = sc->sample_size;
2301 }
2302
2303 for (j = 0; j < sc->stsc_data[stsc_index].count; j++) {
2304 int keyframe = 0;
2305 if (current_sample >= sc->sample_count) {
2306 av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
2307 return;
2308 }
2309
2310 if (!sc->keyframe_absent && (!sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index])) {
2311 keyframe = 1;
2312 if (stss_index + 1 < sc->keyframe_count)
2313 stss_index++;
2314 } else if (sc->stps_count && current_sample+key_off == sc->stps_data[stps_index]) {
2315 keyframe = 1;
2316 if (stps_index + 1 < sc->stps_count)
2317 stps_index++;
2318 }
2319 if (rap_group_present && rap_group_index < sc->rap_group_count) {
2320 if (sc->rap_group[rap_group_index].index > 0)
2321 keyframe = 1;
2322 if (++rap_group_sample == sc->rap_group[rap_group_index].count) {
2323 rap_group_sample = 0;
2324 rap_group_index++;
2325 }
2326 }
2327 if (sc->keyframe_absent
2328 && !sc->stps_count
2329 && !rap_group_present
2330 && (st->codec->codec_type == AVMEDIA_TYPE_AUDIO || (i==0 && j==0)))
2331 keyframe = 1;
2332 if (keyframe)
2333 distance = 0;
2334 sample_size = sc->stsz_sample_size > 0 ? sc->stsz_sample_size : sc->sample_sizes[current_sample];
2335 if (sc->pseudo_stream_id == -1 ||
2336 sc->stsc_data[stsc_index].id - 1 == sc->pseudo_stream_id) {
2337 AVIndexEntry *e = &st->index_entries[st->nb_index_entries++];
2338 e->pos = current_offset;
2339 e->timestamp = current_dts;
2340 e->size = sample_size;
2341 e->min_distance = distance;
2342 e->flags = keyframe ? AVINDEX_KEYFRAME : 0;
2343 av_dlog(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
2344 "size %d, distance %d, keyframe %d\n", st->index, current_sample,
2345 current_offset, current_dts, sample_size, distance, keyframe);
2346 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && st->nb_index_entries < 100)
2347 ff_rfps_add_frame(mov->fc, st, current_dts);
2348 }
2349
2350 current_offset += sample_size;
2351 stream_size += sample_size;
2352 current_dts += sc->stts_data[stts_index].duration;
2353 distance++;
2354 stts_sample++;
2355 current_sample++;
2356 if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
2357 stts_sample = 0;
2358 stts_index++;
2359 }
2360 }
2361 }
2362 if (st->duration > 0)
2363 st->codec->bit_rate = stream_size*8*sc->time_scale/st->duration;
2364 } else {
2365 unsigned chunk_samples, total = 0;
2366
2367 // compute total chunk count
2368 for (i = 0; i < sc->stsc_count; i++) {
2369 unsigned count, chunk_count;
2370
2371 chunk_samples = sc->stsc_data[i].count;
2372 if (i != sc->stsc_count - 1 &&
2373 sc->samples_per_frame && chunk_samples % sc->samples_per_frame) {
2374 av_log(mov->fc, AV_LOG_ERROR, "error unaligned chunk\n");
2375 return;
2376 }
2377
2378 if (sc->samples_per_frame >= 160) { // gsm
2379 count = chunk_samples / sc->samples_per_frame;
2380 } else if (sc->samples_per_frame > 1) {
2381 unsigned samples = (1024/sc->samples_per_frame)*sc->samples_per_frame;
2382 count = (chunk_samples+samples-1) / samples;
2383 } else {
2384 count = (chunk_samples+1023) / 1024;
2385 }
2386
2387 if (i < sc->stsc_count - 1)
2388 chunk_count = sc->stsc_data[i+1].first - sc->stsc_data[i].first;
2389 else
2390 chunk_count = sc->chunk_count - (sc->stsc_data[i].first - 1);
2391 total += chunk_count * count;
2392 }
2393
2394 av_dlog(mov->fc, "chunk count %d\n", total);
2395 if (total >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries)
2396 return;
2397 if (av_reallocp_array(&st->index_entries,
2398 st->nb_index_entries + total,
2399 sizeof(*st->index_entries)) < 0) {
2400 st->nb_index_entries = 0;
2401 return;
2402 }
2403 st->index_entries_allocated_size = (st->nb_index_entries + total) * sizeof(*st->index_entries);
2404
2405 // populate index
2406 for (i = 0; i < sc->chunk_count; i++) {
2407 current_offset = sc->chunk_offsets[i];
2408 if (stsc_index + 1 < sc->stsc_count &&
2409 i + 1 == sc->stsc_data[stsc_index + 1].first)
2410 stsc_index++;
2411 chunk_samples = sc->stsc_data[stsc_index].count;
2412
2413 while (chunk_samples > 0) {
2414 AVIndexEntry *e;
2415 unsigned size, samples;
2416
2417 if (sc->samples_per_frame >= 160) { // gsm
2418 samples = sc->samples_per_frame;
2419 size = sc->bytes_per_frame;
2420 } else {
2421 if (sc->samples_per_frame > 1) {
2422 samples = FFMIN((1024 / sc->samples_per_frame)*
2423 sc->samples_per_frame, chunk_samples);
2424 size = (samples / sc->samples_per_frame) * sc->bytes_per_frame;
2425 } else {
2426 samples = FFMIN(1024, chunk_samples);
2427 size = samples * sc->sample_size;
2428 }
2429 }
2430
2431 if (st->nb_index_entries >= total) {
2432 av_log(mov->fc, AV_LOG_ERROR, "wrong chunk count %d\n", total);
2433 return;
2434 }
2435 e = &st->index_entries[st->nb_index_entries++];
2436 e->pos = current_offset;
2437 e->timestamp = current_dts;
2438 e->size = size;
2439 e->min_distance = 0;
2440 e->flags = AVINDEX_KEYFRAME;
2441 av_dlog(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", "
2442 "size %d, duration %d\n", st->index, i, current_offset, current_dts,
2443 size, samples);
2444
2445 current_offset += size;
2446 current_dts += samples;
2447 chunk_samples -= samples;
2448 }
2449 }
2450 }
2451}
2452
2453static int mov_open_dref(AVIOContext **pb, const char *src, MOVDref *ref,
2454 AVIOInterruptCB *int_cb, int use_absolute_path, AVFormatContext *fc)
2455{
2456 /* try relative path, we do not try the absolute because it can leak information about our
2457 system to an attacker */
2458 if (ref->nlvl_to > 0 && ref->nlvl_from > 0) {
2459 char filename[1024];
2460 const char *src_path;
2461 int i, l;
2462
2463 /* find a source dir */
2464 src_path = strrchr(src, '/');
2465 if (src_path)
2466 src_path++;
2467 else
2468 src_path = src;
2469
2470 /* find a next level down to target */
2471 for (i = 0, l = strlen(ref->path) - 1; l >= 0; l--)
2472 if (ref->path[l] == '/') {
2473 if (i == ref->nlvl_to - 1)
2474 break;
2475 else
2476 i++;
2477 }
2478
2479 /* compose filename if next level down to target was found */
2480 if (i == ref->nlvl_to - 1 && src_path - src < sizeof(filename)) {
2481 memcpy(filename, src, src_path - src);
2482 filename[src_path - src] = 0;
2483
2484 for (i = 1; i < ref->nlvl_from; i++)
2485 av_strlcat(filename, "../", 1024);
2486
2487 av_strlcat(filename, ref->path + l + 1, 1024);
2488
2489 if (!avio_open2(pb, filename, AVIO_FLAG_READ, int_cb, NULL))
2490 return 0;
2491 }
2492 } else if (use_absolute_path) {
2493 av_log(fc, AV_LOG_WARNING, "Using absolute path on user request, "
2494 "this is a possible security issue\n");
2495 if (!avio_open2(pb, ref->path, AVIO_FLAG_READ, int_cb, NULL))
2496 return 0;
2497 }
2498
2499 return AVERROR(ENOENT);
2500}
2501
2502static void fix_timescale(MOVContext *c, MOVStreamContext *sc)
2503{
2504 if (sc->time_scale <= 0) {
2505 av_log(c->fc, AV_LOG_WARNING, "stream %d, timescale not set\n", sc->ffindex);
2506 sc->time_scale = c->time_scale;
2507 if (sc->time_scale <= 0)
2508 sc->time_scale = 1;
2509 }
2510}
2511
2512static int mov_read_trak(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2513{
2514 AVStream *st;
2515 MOVStreamContext *sc;
2516 int ret;
2517
2518 st = avformat_new_stream(c->fc, NULL);
2519 if (!st) return AVERROR(ENOMEM);
2520 st->id = c->fc->nb_streams;
2521 sc = av_mallocz(sizeof(MOVStreamContext));
2522 if (!sc) return AVERROR(ENOMEM);
2523
2524 st->priv_data = sc;
2525 st->codec->codec_type = AVMEDIA_TYPE_DATA;
2526 sc->ffindex = st->index;
2527
2528 if ((ret = mov_read_default(c, pb, atom)) < 0)
2529 return ret;
2530
2531 /* sanity checks */
2532 if (sc->chunk_count && (!sc->stts_count || !sc->stsc_count ||
2533 (!sc->sample_size && !sc->sample_count))) {
2534 av_log(c->fc, AV_LOG_ERROR, "stream %d, missing mandatory atoms, broken header\n",
2535 st->index);
2536 return 0;
2537 }
2538
2539 fix_timescale(c, sc);
2540
2541 avpriv_set_pts_info(st, 64, 1, sc->time_scale);
2542
2543 mov_build_index(c, st);
2544
2545 if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) {
2546 MOVDref *dref = &sc->drefs[sc->dref_id - 1];
2547 if (mov_open_dref(&sc->pb, c->fc->filename, dref, &c->fc->interrupt_callback,
2548 c->use_absolute_path, c->fc) < 0)
2549 av_log(c->fc, AV_LOG_ERROR,
2550 "stream %d, error opening alias: path='%s', dir='%s', "
2551 "filename='%s', volume='%s', nlvl_from=%d, nlvl_to=%d\n",
2552 st->index, dref->path, dref->dir, dref->filename,
2553 dref->volume, dref->nlvl_from, dref->nlvl_to);
2554 } else {
2555 sc->pb = c->fc->pb;
2556 sc->pb_is_copied = 1;
2557 }
2558
2559 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2560 if (!st->sample_aspect_ratio.num &&
2561 (st->codec->width != sc->width || st->codec->height != sc->height)) {
2562 st->sample_aspect_ratio = av_d2q(((double)st->codec->height * sc->width) /
2563 ((double)st->codec->width * sc->height), INT_MAX);
2564 }
2565
2566#if FF_API_R_FRAME_RATE
2567 if (sc->stts_count == 1 || (sc->stts_count == 2 && sc->stts_data[1].count == 1))
2568 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den,
2569 sc->time_scale, sc->stts_data[0].duration, INT_MAX);
2570#endif
2571 }
2572
2573 // done for ai5q, ai52, ai55, ai1q, ai12 and ai15.
2574 if (!st->codec->extradata_size && st->codec->codec_id == AV_CODEC_ID_H264 &&
2575 TAG_IS_AVCI(st->codec->codec_tag)) {
2576 ret = ff_generate_avci_extradata(st);
2577 if (ret < 0)
2578 return ret;
2579 }
2580
2581 switch (st->codec->codec_id) {
2582#if CONFIG_H261_DECODER
2583 case AV_CODEC_ID_H261:
2584#endif
2585#if CONFIG_H263_DECODER
2586 case AV_CODEC_ID_H263:
2587#endif
2588#if CONFIG_MPEG4_DECODER
2589 case AV_CODEC_ID_MPEG4:
2590#endif
2591 st->codec->width = 0; /* let decoder init width/height */
2592 st->codec->height= 0;
2593 break;
2594 }
2595
2596 /* Do not need those anymore. */
2597 av_freep(&sc->chunk_offsets);
2598 av_freep(&sc->stsc_data);
2599 av_freep(&sc->sample_sizes);
2600 av_freep(&sc->keyframes);
2601 av_freep(&sc->stts_data);
2602 av_freep(&sc->stps_data);
2603 av_freep(&sc->rap_group);
2604
2605 return 0;
2606}
2607
2608static int mov_read_ilst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2609{
2610 int ret;
2611 c->itunes_metadata = 1;
2612 ret = mov_read_default(c, pb, atom);
2613 c->itunes_metadata = 0;
2614 return ret;
2615}
2616
2617static int mov_read_custom_2plus(MOVContext *c, AVIOContext *pb, int size)
2618{
2619 int64_t end = avio_tell(pb) + size;
2620 uint8_t *key = NULL, *val = NULL;
2621 int i;
2622 AVStream *st;
2623 MOVStreamContext *sc;
2624
2625 if (c->fc->nb_streams < 1)
2626 return 0;
2627 st = c->fc->streams[c->fc->nb_streams-1];
2628 sc = st->priv_data;
2629
2630 for (i = 0; i < 2; i++) {
2631 uint8_t **p;
2632 uint32_t len, tag;
2633
2634 if (end - avio_tell(pb) <= 12)
2635 break;
2636
2637 len = avio_rb32(pb);
2638 tag = avio_rl32(pb);
2639 avio_skip(pb, 4); // flags
2640
2641 if (len < 12 || len - 12 > end - avio_tell(pb))
2642 break;
2643 len -= 12;
2644
2645 if (tag == MKTAG('n', 'a', 'm', 'e'))
2646 p = &key;
2647 else if (tag == MKTAG('d', 'a', 't', 'a') && len > 4) {
2648 avio_skip(pb, 4);
2649 len -= 4;
2650 p = &val;
2651 } else
2652 break;
2653
2654 *p = av_malloc(len + 1);
2655 if (!*p)
2656 break;
2657 avio_read(pb, *p, len);
2658 (*p)[len] = 0;
2659 }
2660
2661 if (key && val) {
2662 if (strcmp(key, "iTunSMPB") == 0) {
2663 int priming, remainder, samples;
2664 if(sscanf(val, "%*X %X %X %X", &priming, &remainder, &samples) == 3){
2665 if(priming>0 && priming<16384)
2666 sc->start_pad = priming;
2667 }
2668 }
2669 if (strcmp(key, "cdec") != 0) {
2670 av_dict_set(&c->fc->metadata, key, val,
2671 AV_DICT_DONT_STRDUP_KEY | AV_DICT_DONT_STRDUP_VAL);
2672 key = val = NULL;
2673 }
2674 }
2675
2676 avio_seek(pb, end, SEEK_SET);
2677 av_freep(&key);
2678 av_freep(&val);
2679 return 0;
2680}
2681
2682static int mov_read_custom(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2683{
2684 int64_t end = avio_tell(pb) + atom.size;
2685 uint32_t tag, len;
2686
2687 if (atom.size < 8)
2688 goto fail;
2689
2690 len = avio_rb32(pb);
2691 tag = avio_rl32(pb);
2692
2693 if (len > atom.size)
2694 goto fail;
2695
2696 if (tag == MKTAG('m', 'e', 'a', 'n') && len > 12) {
2697 uint8_t domain[128];
2698 int domain_len;
2699
2700 avio_skip(pb, 4); // flags
2701 len -= 12;
2702
2703 domain_len = avio_get_str(pb, len, domain, sizeof(domain));
2704 avio_skip(pb, len - domain_len);
2705 return mov_read_custom_2plus(c, pb, end - avio_tell(pb));
2706 }
2707
2708fail:
2709 av_log(c->fc, AV_LOG_VERBOSE,
2710 "Unhandled or malformed custom metadata of size %"PRId64"\n", atom.size);
2711 return 0;
2712}
2713
2714static int mov_read_meta(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2715{
2716 while (atom.size > 8) {
2717 uint32_t tag = avio_rl32(pb);
2718 atom.size -= 4;
2719 if (tag == MKTAG('h','d','l','r')) {
2720 avio_seek(pb, -8, SEEK_CUR);
2721 atom.size += 8;
2722 return mov_read_default(c, pb, atom);
2723 }
2724 }
2725 return 0;
2726}
2727
2728static int mov_read_tkhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2729{
2730 int i;
2731 int width;
2732 int height;
2733 int64_t disp_transform[2];
2734 int display_matrix[3][3];
2735 AVStream *st;
2736 MOVStreamContext *sc;
2737 int version;
2738 int flags;
2739
2740 if (c->fc->nb_streams < 1)
2741 return 0;
2742 st = c->fc->streams[c->fc->nb_streams-1];
2743 sc = st->priv_data;
2744
2745 version = avio_r8(pb);
2746 flags = avio_rb24(pb);
2747 st->disposition |= (flags & MOV_TKHD_FLAG_ENABLED) ? AV_DISPOSITION_DEFAULT : 0;
2748
2749 if (version == 1) {
2750 avio_rb64(pb);
2751 avio_rb64(pb);
2752 } else {
2753 avio_rb32(pb); /* creation time */
2754 avio_rb32(pb); /* modification time */
2755 }
2756 st->id = (int)avio_rb32(pb); /* track id (NOT 0 !)*/
2757 avio_rb32(pb); /* reserved */
2758
2759 /* highlevel (considering edits) duration in movie timebase */
2760 (version == 1) ? avio_rb64(pb) : avio_rb32(pb);
2761 avio_rb32(pb); /* reserved */
2762 avio_rb32(pb); /* reserved */
2763
2764 avio_rb16(pb); /* layer */
2765 avio_rb16(pb); /* alternate group */
2766 avio_rb16(pb); /* volume */
2767 avio_rb16(pb); /* reserved */
2768
2769 //read in the display matrix (outlined in ISO 14496-12, Section 6.2.2)
2770 // they're kept in fixed point format through all calculations
2771 // save u,v,z to store the whole matrix in the AV_PKT_DATA_DISPLAYMATRIX
2772 // side data, but the scale factor is not needed to calculate aspect ratio
2773 for (i = 0; i < 3; i++) {
2774 display_matrix[i][0] = avio_rb32(pb); // 16.16 fixed point
2775 display_matrix[i][1] = avio_rb32(pb); // 16.16 fixed point
2776 display_matrix[i][2] = avio_rb32(pb); // 2.30 fixed point
2777 }
2778
2779 width = avio_rb32(pb); // 16.16 fixed point track width
2780 height = avio_rb32(pb); // 16.16 fixed point track height
2781 sc->width = width >> 16;
2782 sc->height = height >> 16;
2783
2784 // save the matrix and add rotate metadata when it is not the default
2785 // identity
2786 if (display_matrix[0][0] != (1 << 16) ||
2787 display_matrix[1][1] != (1 << 16) ||
2788 display_matrix[2][2] != (1 << 30) ||
2789 display_matrix[0][1] || display_matrix[0][2] ||
2790 display_matrix[1][0] || display_matrix[1][2] ||
2791 display_matrix[2][0] || display_matrix[2][1]) {
2792 int i, j;
2793 double rotate;
2794
2795 av_freep(&sc->display_matrix);
2796 sc->display_matrix = av_malloc(sizeof(int32_t) * 9);
2797 if (!sc->display_matrix)
2798 return AVERROR(ENOMEM);
2799
2800 for (i = 0; i < 3; i++)
2801 for (j = 0; j < 3; j++)
2802 sc->display_matrix[i * 3 + j] = display_matrix[j][i];
2803
2804 rotate = av_display_rotation_get(sc->display_matrix);
2805 if (!isnan(rotate)) {
2806 char rotate_buf[64];
2807 rotate = -rotate;
2808 if (rotate < 0) // for backward compatibility
2809 rotate += 360;
2810 snprintf(rotate_buf, sizeof(rotate_buf), "%g", rotate);
2811 av_dict_set(&st->metadata, "rotate", rotate_buf, 0);
2812 }
2813 }
2814
2815 // transform the display width/height according to the matrix
2816 // skip this if the display matrix is the default identity matrix
2817 // or if it is rotating the picture, ex iPhone 3GS
2818 // to keep the same scale, use [width height 1<<16]
2819 if (width && height &&
2820 ((display_matrix[0][0] != 65536 ||
2821 display_matrix[1][1] != 65536) &&
2822 !display_matrix[0][1] &&
2823 !display_matrix[1][0] &&
2824 !display_matrix[2][0] && !display_matrix[2][1])) {
2825 for (i = 0; i < 2; i++)
2826 disp_transform[i] =
2827 (int64_t) width * display_matrix[0][i] +
2828 (int64_t) height * display_matrix[1][i] +
2829 ((int64_t) display_matrix[2][i] << 16);
2830
2831 //sample aspect ratio is new width/height divided by old width/height
2832 st->sample_aspect_ratio = av_d2q(
2833 ((double) disp_transform[0] * height) /
2834 ((double) disp_transform[1] * width), INT_MAX);
2835 }
2836 return 0;
2837}
2838
2839static int mov_read_tfhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2840{
2841 MOVFragment *frag = &c->fragment;
2842 MOVTrackExt *trex = NULL;
f6fa7814 2843 MOVFragmentIndex* index = NULL;
2ba45a60
DM		 2844 int flags, track_id, i;
2845
2846 avio_r8(pb); /* version */
2847 flags = avio_rb24(pb);
2848
2849 track_id = avio_rb32(pb);
2850 if (!track_id)
2851 return AVERROR_INVALIDDATA;
2852 frag->track_id = track_id;
2853 for (i = 0; i < c->trex_count; i++)
2854 if (c->trex_data[i].track_id == frag->track_id) {
2855 trex = &c->trex_data[i];
2856 break;
2857 }
2858 if (!trex) {
2859 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding trex\n");
2860 return AVERROR_INVALIDDATA;
2861 }
f6fa7814
DM		 2862 for (i = 0; i < c->fragment_index_count; i++) {
2863 MOVFragmentIndex* candidate = c->fragment_index_data[i];
2864 if (candidate->track_id == frag->track_id) {
2865 av_log(c->fc, AV_LOG_DEBUG,
2866 "found fragment index for track %u\n", frag->track_id);
2867 index = candidate;
2868 break;
2869 }
2870 }
2ba45a60
DM		 2871
2872 frag->base_data_offset = flags & MOV_TFHD_BASE_DATA_OFFSET ?
2873 avio_rb64(pb) : flags & MOV_TFHD_DEFAULT_BASE_IS_MOOF ?
2874 frag->moof_offset : frag->implicit_offset;
2875 frag->stsd_id = flags & MOV_TFHD_STSD_ID ? avio_rb32(pb) : trex->stsd_id;
2876
2877 frag->duration = flags & MOV_TFHD_DEFAULT_DURATION ?
2878 avio_rb32(pb) : trex->duration;
2879 frag->size = flags & MOV_TFHD_DEFAULT_SIZE ?
2880 avio_rb32(pb) : trex->size;
2881 frag->flags = flags & MOV_TFHD_DEFAULT_FLAGS ?
2882 avio_rb32(pb) : trex->flags;
f6fa7814
DM		 2883 frag->time = AV_NOPTS_VALUE;
2884 if (index) {
2885 int i, found = 0;
2886 for (i = index->current_item; i < index->item_count; i++) {
2887 if (frag->implicit_offset == index->items[i].moof_offset) {
2888 av_log(c->fc, AV_LOG_DEBUG, "found fragment index entry "
2889 "for track %u and moof_offset %"PRId64"\n",
2890 frag->track_id, index->items[i].moof_offset);
2891 frag->time = index->items[i].time;
2892 index->current_item = i + 1;
2893 found = 1;
2894 }
2895 }
2896 if (!found) {
2897 av_log(c->fc, AV_LOG_WARNING, "track %u has a fragment index "
2898 "but it doesn't have an (in-order) entry for moof_offset "
2899 "%"PRId64"\n", frag->track_id, frag->implicit_offset);
2900 }
2901 }
2ba45a60
DM		 2902 av_dlog(c->fc, "frag flags 0x%x\n", frag->flags);
2903 return 0;
2904}
2905
2906static int mov_read_chap(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2907{
2908 c->chapter_track = avio_rb32(pb);
2909 return 0;
2910}
2911
2912static int mov_read_trex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2913{
2914 MOVTrackExt *trex;
2915 int err;
2916
2917 if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data))
2918 return AVERROR_INVALIDDATA;
2919 if ((err = av_reallocp_array(&c->trex_data, c->trex_count + 1,
2920 sizeof(*c->trex_data))) < 0) {
2921 c->trex_count = 0;
2922 return err;
2923 }
2924
2925 c->fc->duration = AV_NOPTS_VALUE; // the duration from mvhd is not representing the whole file when fragments are used.
2926
2927 trex = &c->trex_data[c->trex_count++];
2928 avio_r8(pb); /* version */
2929 avio_rb24(pb); /* flags */
2930 trex->track_id = avio_rb32(pb);
2931 trex->stsd_id = avio_rb32(pb);
2932 trex->duration = avio_rb32(pb);
2933 trex->size = avio_rb32(pb);
2934 trex->flags = avio_rb32(pb);
2935 return 0;
2936}
2937
f6fa7814
DM		 2938static int mov_read_tfdt(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2939{
2940 MOVFragment *frag = &c->fragment;
2941 AVStream *st = NULL;
2942 MOVStreamContext *sc;
2943 int version, i;
2944
2945 for (i = 0; i < c->fc->nb_streams; i++) {
2946 if (c->fc->streams[i]->id == frag->track_id) {
2947 st = c->fc->streams[i];
2948 break;
2949 }
2950 }
2951 if (!st) {
2952 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id);
2953 return AVERROR_INVALIDDATA;
2954 }
2955 sc = st->priv_data;
2956 if (sc->pseudo_stream_id + 1 != frag->stsd_id)
2957 return 0;
2958 version = avio_r8(pb);
2959 avio_rb24(pb); /* flags */
2960 if (version) {
2961 sc->track_end = avio_rb64(pb);
2962 } else {
2963 sc->track_end = avio_rb32(pb);
2964 }
2965 return 0;
2966}
2967
2ba45a60
DM		 2968static int mov_read_trun(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2969{
2970 MOVFragment *frag = &c->fragment;
2971 AVStream *st = NULL;
2972 MOVStreamContext *sc;
2973 MOVStts *ctts_data;
2974 uint64_t offset;
2975 int64_t dts;
2976 int data_offset = 0;
2977 unsigned entries, first_sample_flags = frag->flags;
2978 int flags, distance, i, found_keyframe = 0, err;
2979
2980 for (i = 0; i < c->fc->nb_streams; i++) {
2981 if (c->fc->streams[i]->id == frag->track_id) {
2982 st = c->fc->streams[i];
2983 break;
2984 }
2985 }
2986 if (!st) {
2987 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id);
2988 return AVERROR_INVALIDDATA;
2989 }
2990 sc = st->priv_data;
2991 if (sc->pseudo_stream_id+1 != frag->stsd_id && sc->pseudo_stream_id != -1)
2992 return 0;
2993 avio_r8(pb); /* version */
2994 flags = avio_rb24(pb);
2995 entries = avio_rb32(pb);
2996 av_dlog(c->fc, "flags 0x%x entries %d\n", flags, entries);
2997
2998 /* Always assume the presence of composition time offsets.
2999 * Without this assumption, for instance, we cannot deal with a track in fragmented movies that meet the following.
3000 * 1) in the initial movie, there are no samples.
3001 * 2) in the first movie fragment, there is only one sample without composition time offset.
3002 * 3) in the subsequent movie fragments, there are samples with composition time offset. */
3003 if (!sc->ctts_count && sc->sample_count)
3004 {
3005 /* Complement ctts table if moov atom doesn't have ctts atom. */
3006 ctts_data = av_realloc(NULL, sizeof(*sc->ctts_data));
3007 if (!ctts_data)
3008 return AVERROR(ENOMEM);
3009 sc->ctts_data = ctts_data;
3010 sc->ctts_data[sc->ctts_count].count = sc->sample_count;
3011 sc->ctts_data[sc->ctts_count].duration = 0;
3012 sc->ctts_count++;
3013 }
3014 if ((uint64_t)entries+sc->ctts_count >= UINT_MAX/sizeof(*sc->ctts_data))
3015 return AVERROR_INVALIDDATA;
3016 if ((err = av_reallocp_array(&sc->ctts_data, entries + sc->ctts_count,
3017 sizeof(*sc->ctts_data))) < 0) {
3018 sc->ctts_count = 0;
3019 return err;
3020 }
3021 if (flags & MOV_TRUN_DATA_OFFSET) data_offset = avio_rb32(pb);
3022 if (flags & MOV_TRUN_FIRST_SAMPLE_FLAGS) first_sample_flags = avio_rb32(pb);
3023 dts = sc->track_end - sc->time_offset;
3024 offset = frag->base_data_offset + data_offset;
3025 distance = 0;
3026 av_dlog(c->fc, "first sample flags 0x%x\n", first_sample_flags);
3027 for (i = 0; i < entries && !pb->eof_reached; i++) {
3028 unsigned sample_size = frag->size;
3029 int sample_flags = i ? frag->flags : first_sample_flags;
3030 unsigned sample_duration = frag->duration;
3031 int keyframe = 0;
3032
3033 if (flags & MOV_TRUN_SAMPLE_DURATION) sample_duration = avio_rb32(pb);
3034 if (flags & MOV_TRUN_SAMPLE_SIZE) sample_size = avio_rb32(pb);
3035 if (flags & MOV_TRUN_SAMPLE_FLAGS) sample_flags = avio_rb32(pb);
3036 sc->ctts_data[sc->ctts_count].count = 1;
3037 sc->ctts_data[sc->ctts_count].duration = (flags & MOV_TRUN_SAMPLE_CTS) ?
3038 avio_rb32(pb) : 0;
3039 mov_update_dts_shift(sc, sc->ctts_data[sc->ctts_count].duration);
f6fa7814
DM		 3040 if (frag->time != AV_NOPTS_VALUE) {
3041 if (c->use_mfra_for == FF_MOV_FLAG_MFRA_PTS) {
3042 int64_t pts = frag->time;
3043 av_log(c->fc, AV_LOG_DEBUG, "found frag time %"PRId64
3044 " sc->dts_shift %d ctts.duration %d"
3045 " sc->time_offset %"PRId64" flags & MOV_TRUN_SAMPLE_CTS %d\n", pts,
3046 sc->dts_shift, sc->ctts_data[sc->ctts_count].duration,
3047 sc->time_offset, flags & MOV_TRUN_SAMPLE_CTS);
3048 dts = pts - sc->dts_shift;
3049 if (flags & MOV_TRUN_SAMPLE_CTS) {
3050 dts -= sc->ctts_data[sc->ctts_count].duration;
3051 } else {
3052 dts -= sc->time_offset;
3053 }
3054 av_log(c->fc, AV_LOG_DEBUG, "calculated into dts %"PRId64"\n", dts);
3055 } else {
3056 dts = frag->time;
3057 av_log(c->fc, AV_LOG_DEBUG, "found frag time %"PRId64
3058 ", using it for dts\n", dts);
3059 }
3060 frag->time = AV_NOPTS_VALUE;
3061 }
2ba45a60
DM		 3062 sc->ctts_count++;
3063 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
3064 keyframe = 1;
3065 else if (!found_keyframe)
3066 keyframe = found_keyframe =
3067 !(sample_flags & (MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC |
3068 MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES));
3069 if (keyframe)
3070 distance = 0;
3071 av_add_index_entry(st, offset, dts, sample_size, distance,
3072 keyframe ? AVINDEX_KEYFRAME : 0);
3073 av_dlog(c->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
3074 "size %d, distance %d, keyframe %d\n", st->index, sc->sample_count+i,
3075 offset, dts, sample_size, distance, keyframe);
3076 distance++;
3077 dts += sample_duration;
3078 offset += sample_size;
3079 sc->data_size += sample_size;
3080 sc->duration_for_fps += sample_duration;
3081 sc->nb_frames_for_fps ++;
3082 }
3083
3084 if (pb->eof_reached)
3085 return AVERROR_EOF;
3086
3087 frag->implicit_offset = offset;
3088 st->duration = sc->track_end = dts + sc->time_offset;
3089 return 0;
3090}
3091
3092/* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
3093/* like the files created with Adobe Premiere 5.0, for samples see */
3094/* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
3095static int mov_read_wide(MOVContext *c, AVIOContext *pb, MOVAtom atom)
3096{
3097 int err;
3098
3099 if (atom.size < 8)
3100 return 0; /* continue */
3101 if (avio_rb32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
3102 avio_skip(pb, atom.size - 4);
3103 return 0;
3104 }
3105 atom.type = avio_rl32(pb);
3106 atom.size -= 8;
3107 if (atom.type != MKTAG('m','d','a','t')) {
3108 avio_skip(pb, atom.size);
3109 return 0;
3110 }
3111 err = mov_read_mdat(c, pb, atom);
3112 return err;
3113}
3114
3115static int mov_read_cmov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
3116{
3117#if CONFIG_ZLIB
3118 AVIOContext ctx;
3119 uint8_t *cmov_data;
3120 uint8_t *moov_data; /* uncompressed data */
3121 long cmov_len, moov_len;
3122 int ret = -1;
3123
3124 avio_rb32(pb); /* dcom atom */
3125 if (avio_rl32(pb) != MKTAG('d','c','o','m'))
3126 return AVERROR_INVALIDDATA;
3127 if (avio_rl32(pb) != MKTAG('z','l','i','b')) {
3128 av_log(c->fc, AV_LOG_ERROR, "unknown compression for cmov atom !\n");
3129 return AVERROR_INVALIDDATA;
3130 }
3131 avio_rb32(pb); /* cmvd atom */
3132 if (avio_rl32(pb) != MKTAG('c','m','v','d'))
3133 return AVERROR_INVALIDDATA;
3134 moov_len = avio_rb32(pb); /* uncompressed size */
3135 cmov_len = atom.size - 6 * 4;
3136
3137 cmov_data = av_malloc(cmov_len);
3138 if (!cmov_data)
3139 return AVERROR(ENOMEM);
3140 moov_data = av_malloc(moov_len);
3141 if (!moov_data) {
3142 av_free(cmov_data);
3143 return AVERROR(ENOMEM);
3144 }
3145 avio_read(pb, cmov_data, cmov_len);
3146 if (uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
3147 goto free_and_return;
3148 if (ffio_init_context(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
3149 goto free_and_return;
3150 atom.type = MKTAG('m','o','o','v');
3151 atom.size = moov_len;
3152 ret = mov_read_default(c, &ctx, atom);
3153free_and_return:
3154 av_free(moov_data);
3155 av_free(cmov_data);
3156 return ret;
3157#else
3158 av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
3159 return AVERROR(ENOSYS);
3160#endif
3161}
3162
3163/* edit list atom */
3164static int mov_read_elst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
3165{
3166 MOVStreamContext *sc;
3167 int i, edit_count, version, edit_start_index = 0;
3168 int unsupported = 0;
3169
3170 if (c->fc->nb_streams < 1 || c->ignore_editlist)
3171 return 0;
3172 sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
3173
3174 version = avio_r8(pb); /* version */
3175 avio_rb24(pb); /* flags */
3176 edit_count = avio_rb32(pb); /* entries */
3177
3178 if ((uint64_t)edit_count*12+8 > atom.size)
3179 return AVERROR_INVALIDDATA;
3180
3181 av_dlog(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, edit_count);
3182 for (i=0; i<edit_count; i++){
3183 int64_t time;
3184 int64_t duration;
3185 int rate;
3186 if (version == 1) {
3187 duration = avio_rb64(pb);
3188 time = avio_rb64(pb);
3189 } else {
3190 duration = avio_rb32(pb); /* segment duration */
3191 time = (int32_t)avio_rb32(pb); /* media time */
3192 }
3193 rate = avio_rb32(pb);
3194 if (i == 0 && time == -1) {
3195 sc->empty_duration = duration;
3196 edit_start_index = 1;
3197 } else if (i == edit_start_index && time >= 0)
3198 sc->start_time = time;
3199 else
3200 unsupported = 1;
3201
3202 av_dlog(c->fc, "duration=%"PRId64" time=%"PRId64" rate=%f\n",
3203 duration, time, rate / 65536.0);
3204 }
3205
3206 if (unsupported)
3207 av_log(c->fc, AV_LOG_WARNING, "multiple edit list entries, "
3208 "a/v desync might occur, patch welcome\n");
3209
3210 return 0;
3211}
3212
3213static int mov_read_tmcd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
3214{
3215 MOVStreamContext *sc;
3216
3217 if (c->fc->nb_streams < 1)
3218 return AVERROR_INVALIDDATA;
3219 sc = c->fc->streams[c->fc->nb_streams - 1]->priv_data;
3220 sc->timecode_track = avio_rb32(pb);
3221 return 0;
3222}
3223
3224static int mov_read_uuid(MOVContext *c, AVIOContext *pb, MOVAtom atom)
3225{
3226 int ret;
3227 uint8_t uuid[16];
3228 static const uint8_t uuid_isml_manifest[] = {
3229 0xa5, 0xd4, 0x0b, 0x30, 0xe8, 0x14, 0x11, 0xdd,
3230 0xba, 0x2f, 0x08, 0x00, 0x20, 0x0c, 0x9a, 0x66
3231 };
3232
3233 if (atom.size < sizeof(uuid) || atom.size == INT64_MAX)
3234 return AVERROR_INVALIDDATA;
3235
3236 ret = avio_read(pb, uuid, sizeof(uuid));
3237 if (ret < 0) {
3238 return ret;
3239 } else if (ret != sizeof(uuid)) {
3240 return AVERROR_INVALIDDATA;
3241 }
3242 if (!memcmp(uuid, uuid_isml_manifest, sizeof(uuid))) {
3243 uint8_t *buffer, *ptr;
3244 char *endptr;
3245 size_t len = atom.size - sizeof(uuid);
3246
3247 if (len < 4) {
3248 return AVERROR_INVALIDDATA;
3249 }
3250 ret = avio_skip(pb, 4); // zeroes
3251 len -= 4;
3252
3253 buffer = av_mallocz(len + 1);
3254 if (!buffer) {
3255 return AVERROR(ENOMEM);
3256 }
3257 ret = avio_read(pb, buffer, len);
3258 if (ret < 0) {
3259 av_free(buffer);
3260 return ret;
3261 } else if (ret != len) {
3262 av_free(buffer);
3263 return AVERROR_INVALIDDATA;
3264 }
3265
3266 ptr = buffer;
3267 while ((ptr = av_stristr(ptr, "systemBitrate=\""))) {
3268 ptr += sizeof("systemBitrate=\"") - 1;
3269 c->bitrates_count++;
3270 c->bitrates = av_realloc_f(c->bitrates, c->bitrates_count, sizeof(*c->bitrates));
3271 if (!c->bitrates) {
3272 c->bitrates_count = 0;
3273 av_free(buffer);
3274 return AVERROR(ENOMEM);
3275 }
3276 errno = 0;
3277 ret = strtol(ptr, &endptr, 10);
3278 if (ret < 0 || errno || *endptr != '"') {
3279 c->bitrates[c->bitrates_count - 1] = 0;
3280 } else {
3281 c->bitrates[c->bitrates_count - 1] = ret;
3282 }
3283 }
3284
3285 av_free(buffer);
3286 }
3287 return 0;
3288}
3289
f6fa7814
DM		 3290static int mov_read_free(MOVContext *c, AVIOContext *pb, MOVAtom atom)
3291{
3292 int ret;
3293 uint8_t content[16];
3294
3295 if (atom.size < 8)
3296 return 0;
3297
3298 ret = avio_read(pb, content, FFMIN(sizeof(content), atom.size));
3299 if (ret < 0)
3300 return ret;
3301
3302 if ( !c->found_moov
3303 && !c->found_mdat
3304 && !memcmp(content, "Anevia\x1A\x1A", 8)
3305 && c->use_mfra_for == FF_MOV_FLAG_MFRA_AUTO) {
3306 c->use_mfra_for = FF_MOV_FLAG_MFRA_PTS;
3307 }
3308
3309 return 0;
3310}
3311
2ba45a60
DM		 3312static const MOVParseTableEntry mov_default_parse_table[] = {
3313{ MKTAG('A','C','L','R'), mov_read_avid },
3314{ MKTAG('A','P','R','G'), mov_read_avid },
3315{ MKTAG('A','A','L','P'), mov_read_avid },
3316{ MKTAG('A','R','E','S'), mov_read_ares },
3317{ MKTAG('a','v','s','s'), mov_read_avss },
3318{ MKTAG('c','h','p','l'), mov_read_chpl },
3319{ MKTAG('c','o','6','4'), mov_read_stco },
f6fa7814 3320{ MKTAG('c','o','l','r'), mov_read_colr },
2ba45a60
DM		 3321{ MKTAG('c','t','t','s'), mov_read_ctts }, /* composition time to sample */
3322{ MKTAG('d','i','n','f'), mov_read_default },
3323{ MKTAG('d','r','e','f'), mov_read_dref },
3324{ MKTAG('e','d','t','s'), mov_read_default },
3325{ MKTAG('e','l','s','t'), mov_read_elst },
3326{ MKTAG('e','n','d','a'), mov_read_enda },
3327{ MKTAG('f','i','e','l'), mov_read_fiel },
3328{ MKTAG('f','t','y','p'), mov_read_ftyp },
3329{ MKTAG('g','l','b','l'), mov_read_glbl },
3330{ MKTAG('h','d','l','r'), mov_read_hdlr },
3331{ MKTAG('i','l','s','t'), mov_read_ilst },
3332{ MKTAG('j','p','2','h'), mov_read_jp2h },
3333{ MKTAG('m','d','a','t'), mov_read_mdat },
3334{ MKTAG('m','d','h','d'), mov_read_mdhd },
3335{ MKTAG('m','d','i','a'), mov_read_default },
3336{ MKTAG('m','e','t','a'), mov_read_meta },
3337{ MKTAG('m','i','n','f'), mov_read_default },
3338{ MKTAG('m','o','o','f'), mov_read_moof },
3339{ MKTAG('m','o','o','v'), mov_read_moov },
3340{ MKTAG('m','v','e','x'), mov_read_default },
3341{ MKTAG('m','v','h','d'), mov_read_mvhd },
3342{ MKTAG('S','M','I',' '), mov_read_svq3 },
3343{ MKTAG('a','l','a','c'), mov_read_alac }, /* alac specific atom */
3344{ MKTAG('a','v','c','C'), mov_read_glbl },
3345{ MKTAG('p','a','s','p'), mov_read_pasp },
3346{ MKTAG('s','t','b','l'), mov_read_default },
3347{ MKTAG('s','t','c','o'), mov_read_stco },
3348{ MKTAG('s','t','p','s'), mov_read_stps },
3349{ MKTAG('s','t','r','f'), mov_read_strf },
3350{ MKTAG('s','t','s','c'), mov_read_stsc },
3351{ MKTAG('s','t','s','d'), mov_read_stsd }, /* sample description */
3352{ MKTAG('s','t','s','s'), mov_read_stss }, /* sync sample */
3353{ MKTAG('s','t','s','z'), mov_read_stsz }, /* sample size */
3354{ MKTAG('s','t','t','s'), mov_read_stts },
3355{ MKTAG('s','t','z','2'), mov_read_stsz }, /* compact sample size */
3356{ MKTAG('t','k','h','d'), mov_read_tkhd }, /* track header */
f6fa7814 3357{ MKTAG('t','f','d','t'), mov_read_tfdt },
2ba45a60
DM		 3358{ MKTAG('t','f','h','d'), mov_read_tfhd }, /* track fragment header */
3359{ MKTAG('t','r','a','k'), mov_read_trak },
3360{ MKTAG('t','r','a','f'), mov_read_default },
3361{ MKTAG('t','r','e','f'), mov_read_default },
3362{ MKTAG('t','m','c','d'), mov_read_tmcd },
3363{ MKTAG('c','h','a','p'), mov_read_chap },
3364{ MKTAG('t','r','e','x'), mov_read_trex },
3365{ MKTAG('t','r','u','n'), mov_read_trun },
3366{ MKTAG('u','d','t','a'), mov_read_default },
3367{ MKTAG('w','a','v','e'), mov_read_wave },
3368{ MKTAG('e','s','d','s'), mov_read_esds },
3369{ MKTAG('d','a','c','3'), mov_read_dac3 }, /* AC-3 info */
3370{ MKTAG('d','e','c','3'), mov_read_dec3 }, /* EAC-3 info */
3371{ MKTAG('w','i','d','e'), mov_read_wide }, /* place holder */
3372{ MKTAG('w','f','e','x'), mov_read_wfex },
3373{ MKTAG('c','m','o','v'), mov_read_cmov },
3374{ MKTAG('c','h','a','n'), mov_read_chan }, /* channel layout */
3375{ MKTAG('d','v','c','1'), mov_read_dvc1 },
3376{ MKTAG('s','b','g','p'), mov_read_sbgp },
3377{ MKTAG('h','v','c','C'), mov_read_glbl },
3378{ MKTAG('u','u','i','d'), mov_read_uuid },
3379{ MKTAG('C','i','n', 0x8e), mov_read_targa_y216 },
f6fa7814 3380{ MKTAG('f','r','e','e'), mov_read_free },
2ba45a60
DM		 3381{ MKTAG('-','-','-','-'), mov_read_custom },
3382{ 0, NULL }
3383};
3384
3385static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom)
3386{
3387 int64_t total_size = 0;
3388 MOVAtom a;
3389 int i;
3390
3391 if (atom.size < 0)
3392 atom.size = INT64_MAX;
3393 while (total_size + 8 <= atom.size && !avio_feof(pb)) {
3394 int (*parse)(MOVContext*, AVIOContext*, MOVAtom) = NULL;
3395 a.size = atom.size;
3396 a.type=0;
3397 if (atom.size >= 8) {
3398 a.size = avio_rb32(pb);
3399 a.type = avio_rl32(pb);
3400 if (a.type == MKTAG('f','r','e','e') &&
3401 a.size >= 8 &&
3402 c->moov_retry) {
3403 uint8_t buf[8];
3404 uint32_t *type = (uint32_t *)buf + 1;
3405 avio_read(pb, buf, 8);
3406 avio_seek(pb, -8, SEEK_CUR);
3407 if (*type == MKTAG('m','v','h','d') ||
3408 *type == MKTAG('c','m','o','v')) {
3409 av_log(c->fc, AV_LOG_ERROR, "Detected moov in a free atom.\n");
3410 a.type = MKTAG('m','o','o','v');
3411 }
3412 }
3413 if (atom.type != MKTAG('r','o','o','t') &&
3414 atom.type != MKTAG('m','o','o','v'))
3415 {
3416 if (a.type == MKTAG('t','r','a','k') || a.type == MKTAG('m','d','a','t'))
3417 {
3418 av_log(c->fc, AV_LOG_ERROR, "Broken file, trak/mdat not at top-level\n");
3419 avio_skip(pb, -8);
3420 return 0;
3421 }
3422 }
3423 total_size += 8;
3424 if (a.size == 1) { /* 64 bit extended size */
3425 a.size = avio_rb64(pb) - 8;
3426 total_size += 8;
3427 }
3428 }
3429 av_dlog(c->fc, "type: %08x '%.4s' parent:'%.4s' sz: %"PRId64" %"PRId64" %"PRId64"\n",
3430 a.type, (char*)&a.type, (char*)&atom.type, a.size, total_size, atom.size);
3431 if (a.size == 0) {
3432 a.size = atom.size - total_size + 8;
3433 }
3434 a.size -= 8;
3435 if (a.size < 0)
3436 break;
3437 a.size = FFMIN(a.size, atom.size - total_size);
3438
3439 for (i = 0; mov_default_parse_table[i].type; i++)
3440 if (mov_default_parse_table[i].type == a.type) {
3441 parse = mov_default_parse_table[i].parse;
3442 break;
3443 }
3444
3445 // container is user data
3446 if (!parse && (atom.type == MKTAG('u','d','t','a') ||
3447 atom.type == MKTAG('i','l','s','t')))
3448 parse = mov_read_udta_string;
3449
3450 if (!parse) { /* skip leaf atoms data */
3451 avio_skip(pb, a.size);
3452 } else {
3453 int64_t start_pos = avio_tell(pb);
3454 int64_t left;
3455 int err = parse(c, pb, a);
3456 if (err < 0)
3457 return err;
3458 if (c->found_moov && c->found_mdat &&
3459 ((!pb->seekable || c->fc->flags & AVFMT_FLAG_IGNIDX) ||
3460 start_pos + a.size == avio_size(pb))) {
3461 if (!pb->seekable || c->fc->flags & AVFMT_FLAG_IGNIDX)
3462 c->next_root_atom = start_pos + a.size;
3463 return 0;
3464 }
3465 left = a.size - avio_tell(pb) + start_pos;
3466 if (left > 0) /* skip garbage at atom end */
3467 avio_skip(pb, left);
3468 else if (left < 0) {
3469 av_log(c->fc, AV_LOG_WARNING,
3470 "overread end of atom '%.4s' by %"PRId64" bytes\n",
3471 (char*)&a.type, -left);
3472 avio_seek(pb, left, SEEK_CUR);
3473 }
3474 }
3475
3476 total_size += a.size;
3477 }
3478
3479 if (total_size < atom.size && atom.size < 0x7ffff)
3480 avio_skip(pb, atom.size - total_size);
3481
3482 return 0;
3483}
3484
3485static int mov_probe(AVProbeData *p)
3486{
3487 int64_t offset;
3488 uint32_t tag;
3489 int score = 0;
3490 int moov_offset = -1;
3491
3492 /* check file header */
3493 offset = 0;
3494 for (;;) {
3495 /* ignore invalid offset */
3496 if ((offset + 8) > (unsigned int)p->buf_size)
3497 break;
3498 tag = AV_RL32(p->buf + offset + 4);
3499 switch(tag) {
3500 /* check for obvious tags */
3501 case MKTAG('m','o','o','v'):
3502 moov_offset = offset + 4;
3503 case MKTAG('m','d','a','t'):
3504 case MKTAG('p','n','o','t'): /* detect movs with preview pics like ew.mov and april.mov */
3505 case MKTAG('u','d','t','a'): /* Packet Video PVAuthor adds this and a lot of more junk */
3506 case MKTAG('f','t','y','p'):
3507 if (AV_RB32(p->buf+offset) < 8 &&
3508 (AV_RB32(p->buf+offset) != 1 ||
3509 offset + 12 > (unsigned int)p->buf_size ||
3510 AV_RB64(p->buf+offset + 8) == 0)) {
3511 score = FFMAX(score, AVPROBE_SCORE_EXTENSION);
3512 } else if (tag == MKTAG('f','t','y','p') &&
3513 AV_RL32(p->buf + offset + 8) == MKTAG('j','p','2',' ')) {
3514 score = FFMAX(score, 5);
3515 } else {
3516 score = AVPROBE_SCORE_MAX;
3517 }
3518 offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset;
3519 break;
3520 /* those are more common words, so rate then a bit less */
3521 case MKTAG('e','d','i','w'): /* xdcam files have reverted first tags */
3522 case MKTAG('w','i','d','e'):
3523 case MKTAG('f','r','e','e'):
3524 case MKTAG('j','u','n','k'):
3525 case MKTAG('p','i','c','t'):
3526 score = FFMAX(score, AVPROBE_SCORE_MAX - 5);
3527 offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset;
3528 break;
3529 case MKTAG(0x82,0x82,0x7f,0x7d):
3530 case MKTAG('s','k','i','p'):
3531 case MKTAG('u','u','i','d'):
3532 case MKTAG('p','r','f','l'):
3533 /* if we only find those cause probedata is too small at least rate them */
3534 score = FFMAX(score, AVPROBE_SCORE_EXTENSION);
3535 offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset;
3536 break;
3537 default:
3538 offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset;
3539 }
3540 }
3541 if(score > AVPROBE_SCORE_MAX - 50 && moov_offset != -1) {
3542 /* moov atom in the header - we should make sure that this is not a
3543 * MOV-packed MPEG-PS */
3544 offset = moov_offset;
3545
3546 while(offset < (p->buf_size - 16)){ /* Sufficient space */
3547 /* We found an actual hdlr atom */
3548 if(AV_RL32(p->buf + offset ) == MKTAG('h','d','l','r') &&
3549 AV_RL32(p->buf + offset + 8) == MKTAG('m','h','l','r') &&
3550 AV_RL32(p->buf + offset + 12) == MKTAG('M','P','E','G')){
3551 av_log(NULL, AV_LOG_WARNING, "Found media data tag MPEG indicating this is a MOV-packed MPEG-PS.\n");
3552 /* We found a media handler reference atom describing an
3553 * MPEG-PS-in-MOV, return a
3554 * low score to force expanding the probe window until
3555 * mpegps_probe finds what it needs */
3556 return 5;
3557 }else
3558 /* Keep looking */
3559 offset+=2;
3560 }
3561 }
3562
3563 return score;
3564}
3565
3566// must be done after parsing all trak because there's no order requirement
3567static void mov_read_chapters(AVFormatContext *s)
3568{
3569 MOVContext *mov = s->priv_data;
3570 AVStream *st = NULL;
3571 MOVStreamContext *sc;
3572 int64_t cur_pos;
3573 int i;
3574
3575 for (i = 0; i < s->nb_streams; i++)
3576 if (s->streams[i]->id == mov->chapter_track) {
3577 st = s->streams[i];
3578 break;
3579 }
3580 if (!st) {
3581 av_log(s, AV_LOG_ERROR, "Referenced QT chapter track not found\n");
3582 return;
3583 }
3584
3585 st->discard = AVDISCARD_ALL;
3586 sc = st->priv_data;
3587 cur_pos = avio_tell(sc->pb);
3588
3589 for (i = 0; i < st->nb_index_entries; i++) {
3590 AVIndexEntry *sample = &st->index_entries[i];
3591 int64_t end = i+1 < st->nb_index_entries ? st->index_entries[i+1].timestamp : st->duration;
3592 uint8_t *title;
3593 uint16_t ch;
3594 int len, title_len;
3595
3596 if (end < sample->timestamp) {
3597 av_log(s, AV_LOG_WARNING, "ignoring stream duration which is shorter than chapters\n");
3598 end = AV_NOPTS_VALUE;
3599 }
3600
3601 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
3602 av_log(s, AV_LOG_ERROR, "Chapter %d not found in file\n", i);
3603 goto finish;
3604 }
3605
3606 // the first two bytes are the length of the title
3607 len = avio_rb16(sc->pb);
3608 if (len > sample->size-2)
3609 continue;
3610 title_len = 2*len + 1;
3611 if (!(title = av_mallocz(title_len)))
3612 goto finish;
3613
3614 // The samples could theoretically be in any encoding if there's an encd
3615 // atom following, but in practice are only utf-8 or utf-16, distinguished
3616 // instead by the presence of a BOM
3617 if (!len) {
3618 title[0] = 0;
3619 } else {
3620 ch = avio_rb16(sc->pb);
3621 if (ch == 0xfeff)
3622 avio_get_str16be(sc->pb, len, title, title_len);
3623 else if (ch == 0xfffe)
3624 avio_get_str16le(sc->pb, len, title, title_len);
3625 else {
3626 AV_WB16(title, ch);
3627 if (len == 1 || len == 2)
3628 title[len] = 0;
3629 else
3630 avio_get_str(sc->pb, INT_MAX, title + 2, len - 1);
3631 }
3632 }
3633
3634 avpriv_new_chapter(s, i, st->time_base, sample->timestamp, end, title);
3635 av_freep(&title);
3636 }
3637finish:
3638 avio_seek(sc->pb, cur_pos, SEEK_SET);
3639}
3640
3641static int parse_timecode_in_framenum_format(AVFormatContext *s, AVStream *st,
3642 uint32_t value, int flags)
3643{
3644 AVTimecode tc;
3645 char buf[AV_TIMECODE_STR_SIZE];
3646 AVRational rate = {st->codec->time_base.den,
3647 st->codec->time_base.num};
3648 int ret = av_timecode_init(&tc, rate, flags, 0, s);
3649 if (ret < 0)
3650 return ret;
3651 av_dict_set(&st->metadata, "timecode",
3652 av_timecode_make_string(&tc, buf, value), 0);
3653 return 0;
3654}
3655
3656static int mov_read_timecode_track(AVFormatContext *s, AVStream *st)
3657{
3658 MOVStreamContext *sc = st->priv_data;
3659 int flags = 0;
3660 int64_t cur_pos = avio_tell(sc->pb);
3661 uint32_t value;
3662
3663 if (!st->nb_index_entries)
3664 return -1;
3665
3666 avio_seek(sc->pb, st->index_entries->pos, SEEK_SET);
3667 value = avio_rb32(s->pb);
3668
3669 if (sc->tmcd_flags & 0x0001) flags |= AV_TIMECODE_FLAG_DROPFRAME;
3670 if (sc->tmcd_flags & 0x0002) flags |= AV_TIMECODE_FLAG_24HOURSMAX;
3671 if (sc->tmcd_flags & 0x0004) flags |= AV_TIMECODE_FLAG_ALLOWNEGATIVE;
3672
3673 /* Assume Counter flag is set to 1 in tmcd track (even though it is likely
3674 * not the case) and thus assume "frame number format" instead of QT one.
3675 * No sample with tmcd track can be found with a QT timecode at the moment,
3676 * despite what the tmcd track "suggests" (Counter flag set to 0 means QT
3677 * format). */
3678 parse_timecode_in_framenum_format(s, st, value, flags);
3679
3680 avio_seek(sc->pb, cur_pos, SEEK_SET);
3681 return 0;
3682}
3683
3684static int mov_read_close(AVFormatContext *s)
3685{
3686 MOVContext *mov = s->priv_data;
3687 int i, j;
3688
3689 for (i = 0; i < s->nb_streams; i++) {
3690 AVStream *st = s->streams[i];
3691 MOVStreamContext *sc = st->priv_data;
3692
3693 av_freep(&sc->ctts_data);
3694 for (j = 0; j < sc->drefs_count; j++) {
3695 av_freep(&sc->drefs[j].path);
3696 av_freep(&sc->drefs[j].dir);
3697 }
3698 av_freep(&sc->drefs);
3699
3700 sc->drefs_count = 0;
3701
3702 if (!sc->pb_is_copied)
3703 avio_close(sc->pb);
3704
3705 sc->pb = NULL;
3706 av_freep(&sc->chunk_offsets);
3707 av_freep(&sc->stsc_data);
3708 av_freep(&sc->sample_sizes);
3709 av_freep(&sc->keyframes);
3710 av_freep(&sc->stts_data);
3711 av_freep(&sc->stps_data);
3712 av_freep(&sc->rap_group);
3713 av_freep(&sc->display_matrix);
3714 }
3715
3716 if (mov->dv_demux) {
3717 avformat_free_context(mov->dv_fctx);
3718 mov->dv_fctx = NULL;
3719 }
3720
3721 av_freep(&mov->trex_data);
3722 av_freep(&mov->bitrates);
3723
f6fa7814
DM		 3724 for (i = 0; i < mov->fragment_index_count; i++) {
3725 MOVFragmentIndex* index = mov->fragment_index_data[i];
3726 av_freep(&index->items);
3727 av_freep(&mov->fragment_index_data[i]);
3728 }
3729 av_freep(&mov->fragment_index_data);
3730
2ba45a60
DM		 3731 return 0;
3732}
3733
3734static int tmcd_is_referenced(AVFormatContext *s, int tmcd_id)
3735{
3736 int i;
3737
3738 for (i = 0; i < s->nb_streams; i++) {
3739 AVStream *st = s->streams[i];
3740 MOVStreamContext *sc = st->priv_data;
3741
3742 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
3743 sc->timecode_track == tmcd_id)
3744 return 1;
3745 }
3746 return 0;
3747}
3748
3749/* look for a tmcd track not referenced by any video track, and export it globally */
3750static void export_orphan_timecode(AVFormatContext *s)
3751{
3752 int i;
3753
3754 for (i = 0; i < s->nb_streams; i++) {
3755 AVStream *st = s->streams[i];
3756
3757 if (st->codec->codec_tag == MKTAG('t','m','c','d') &&
3758 !tmcd_is_referenced(s, i + 1)) {
3759 AVDictionaryEntry *tcr = av_dict_get(st->metadata, "timecode", NULL, 0);
3760 if (tcr) {
3761 av_dict_set(&s->metadata, "timecode", tcr->value, 0);
3762 break;
3763 }
3764 }
3765 }
3766}
3767
f6fa7814
DM		 3768static int read_tfra(MOVContext *mov, AVIOContext *f)
3769{
3770 MOVFragmentIndex* index = NULL;
3771 int version, fieldlength, i, j, err;
3772 int64_t pos = avio_tell(f);
3773 uint32_t size = avio_rb32(f);
3774 if (avio_rb32(f) != MKBETAG('t', 'f', 'r', 'a')) {
3775 return -1;
3776 }
3777 av_log(mov->fc, AV_LOG_VERBOSE, "found tfra\n");
3778 index = av_mallocz(sizeof(MOVFragmentIndex));
3779 if (!index) {
3780 return AVERROR(ENOMEM);
3781 }
3782 mov->fragment_index_count++;
3783 if ((err = av_reallocp(&mov->fragment_index_data,
3784 mov->fragment_index_count *
3785 sizeof(MOVFragmentIndex*))) < 0) {
3786 av_freep(&index);
3787 return err;
3788 }
3789 mov->fragment_index_data[mov->fragment_index_count - 1] =
3790 index;
3791
3792 version = avio_r8(f);
3793 avio_rb24(f);
3794 index->track_id = avio_rb32(f);
3795 fieldlength = avio_rb32(f);
3796 index->item_count = avio_rb32(f);
3797 index->items = av_mallocz(
3798 index->item_count * sizeof(MOVFragmentIndexItem));
3799 if (!index->items) {
3800 return AVERROR(ENOMEM);
3801 }
3802 for (i = 0; i < index->item_count; i++) {
3803 int64_t time, offset;
3804 if (version == 1) {
3805 time = avio_rb64(f);
3806 offset = avio_rb64(f);
3807 } else {
3808 time = avio_rb32(f);
3809 offset = avio_rb32(f);
3810 }
3811 index->items[i].time = time;
3812 index->items[i].moof_offset = offset;
3813 for (j = 0; j < ((fieldlength >> 4) & 3) + 1; j++)
3814 avio_r8(f);
3815 for (j = 0; j < ((fieldlength >> 2) & 3) + 1; j++)
3816 avio_r8(f);
3817 for (j = 0; j < ((fieldlength >> 0) & 3) + 1; j++)
3818 avio_r8(f);
3819 }
3820
3821 avio_seek(f, pos + size, SEEK_SET);
3822 return 0;
3823}
3824
3825static int mov_read_mfra(MOVContext *c, AVIOContext *f)
3826{
3827 int64_t stream_size = avio_size(f);
3828 int64_t original_pos = avio_tell(f);
3829 int64_t seek_ret;
3830 int32_t mfra_size;
3831 int ret = -1;
3832 if ((seek_ret = avio_seek(f, stream_size - 4, SEEK_SET)) < 0) {
3833 ret = seek_ret;
3834 goto fail;
3835 }
3836 mfra_size = avio_rb32(f);
3837 if (mfra_size < 0 || mfra_size > stream_size) {
3838 av_log(c->fc, AV_LOG_DEBUG, "doesn't look like mfra (unreasonable size)\n");
3839 goto fail;
3840 }
3841 if ((seek_ret = avio_seek(f, -mfra_size, SEEK_CUR)) < 0) {
3842 ret = seek_ret;
3843 goto fail;
3844 }
3845 if (avio_rb32(f) != mfra_size) {
3846 av_log(c->fc, AV_LOG_DEBUG, "doesn't look like mfra (size mismatch)\n");
3847 goto fail;
3848 }
3849 if (avio_rb32(f) != MKBETAG('m', 'f', 'r', 'a')) {
3850 av_log(c->fc, AV_LOG_DEBUG, "doesn't look like mfra (tag mismatch)\n");
3851 goto fail;
3852 }
3853 ret = 0;
3854 av_log(c->fc, AV_LOG_VERBOSE, "stream has mfra\n");
3855 while (!read_tfra(c, f)) {
3856 /* Empty */
3857 }
3858fail:
3859 seek_ret = avio_seek(f, original_pos, SEEK_SET);
3860 if (seek_ret < 0) {
3861 av_log(c->fc, AV_LOG_ERROR,
3862 "failed to seek back after looking for mfra\n");
3863 ret = seek_ret;
3864 }
3865 return ret;
3866}
3867
2ba45a60
DM		 3868static int mov_read_header(AVFormatContext *s)
3869{
3870 MOVContext *mov = s->priv_data;
3871 AVIOContext *pb = s->pb;
3872 int j, err;
3873 MOVAtom atom = { AV_RL32("root") };
3874 int i;
3875
3876 mov->fc = s;
3877 /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
3878 if (pb->seekable)
3879 atom.size = avio_size(pb);
3880 else
3881 atom.size = INT64_MAX;
3882
3883 /* check MOV header */
3884 do {
3885 if (mov->moov_retry)
3886 avio_seek(pb, 0, SEEK_SET);
3887 if ((err = mov_read_default(mov, pb, atom)) < 0) {
3888 av_log(s, AV_LOG_ERROR, "error reading header\n");
3889 mov_read_close(s);
3890 return err;
3891 }
3892 } while (pb->seekable && !mov->found_moov && !mov->moov_retry++);
3893 if (!mov->found_moov) {
3894 av_log(s, AV_LOG_ERROR, "moov atom not found\n");
3895 mov_read_close(s);
3896 return AVERROR_INVALIDDATA;
3897 }
3898 av_dlog(mov->fc, "on_parse_exit_offset=%"PRId64"\n", avio_tell(pb));
3899
3900 if (pb->seekable) {
3901 if (mov->chapter_track > 0)
3902 mov_read_chapters(s);
3903 for (i = 0; i < s->nb_streams; i++)
3904 if (s->streams[i]->codec->codec_tag == AV_RL32("tmcd"))
3905 mov_read_timecode_track(s, s->streams[i]);
3906 }
3907
3908 /* copy timecode metadata from tmcd tracks to the related video streams */
3909 for (i = 0; i < s->nb_streams; i++) {
3910 AVStream *st = s->streams[i];
3911 MOVStreamContext *sc = st->priv_data;
3912 if (sc->timecode_track > 0) {
3913 AVDictionaryEntry *tcr;
3914 int tmcd_st_id = -1;
3915
3916 for (j = 0; j < s->nb_streams; j++)
3917 if (s->streams[j]->id == sc->timecode_track)
3918 tmcd_st_id = j;
3919
3920 if (tmcd_st_id < 0 || tmcd_st_id == i)
3921 continue;
3922 tcr = av_dict_get(s->streams[tmcd_st_id]->metadata, "timecode", NULL, 0);
3923 if (tcr)
3924 av_dict_set(&st->metadata, "timecode", tcr->value, 0);
3925 }
3926 }
3927 export_orphan_timecode(s);
3928
3929 for (i = 0; i < s->nb_streams; i++) {
3930 AVStream *st = s->streams[i];
3931 MOVStreamContext *sc = st->priv_data;
3932 fix_timescale(mov, sc);
3933 if(st->codec->codec_type == AVMEDIA_TYPE_AUDIO && st->codec->codec_id == AV_CODEC_ID_AAC) {
3934 st->skip_samples = sc->start_pad;
3935 }
3936 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && sc->nb_frames_for_fps > 0 && sc->duration_for_fps > 0)
3937 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
3938 sc->time_scale*(int64_t)sc->nb_frames_for_fps, sc->duration_for_fps, INT_MAX);
3939 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
f6fa7814 3940 if (st->codec->width <= 0 || st->codec->height <= 0) {
2ba45a60
DM		 3941 st->codec->width = sc->width;
3942 st->codec->height = sc->height;
3943 }
3944 if (st->codec->codec_id == AV_CODEC_ID_DVD_SUBTITLE) {
3945 if ((err = mov_rewrite_dvd_sub_extradata(st)) < 0)
3946 return err;
3947 }
3948 }
3949 }
3950
3951 if (mov->trex_data) {
3952 for (i = 0; i < s->nb_streams; i++) {
3953 AVStream *st = s->streams[i];
3954 MOVStreamContext *sc = st->priv_data;
3955 if (st->duration > 0)
3956 st->codec->bit_rate = sc->data_size * 8 * sc->time_scale / st->duration;
3957 }
3958 }
3959
f6fa7814
DM		 3960 if (mov->use_mfra_for > 0) {
3961 for (i = 0; i < s->nb_streams; i++) {
3962 AVStream *st = s->streams[i];
3963 MOVStreamContext *sc = st->priv_data;
3964 if (sc->duration_for_fps > 0) {
3965 st->codec->bit_rate = sc->data_size * 8 * sc->time_scale /
3966 sc->duration_for_fps;
3967 }
3968 }
3969 }
3970
2ba45a60
DM		 3971 for (i = 0; i < mov->bitrates_count && i < s->nb_streams; i++) {
3972 if (mov->bitrates[i]) {
3973 s->streams[i]->codec->bit_rate = mov->bitrates[i];
3974 }
3975 }
3976
3977 ff_rfps_calculate(s);
3978
3979 for (i = 0; i < s->nb_streams; i++) {
3980 AVStream *st = s->streams[i];
3981 MOVStreamContext *sc = st->priv_data;
3982
3983 switch (st->codec->codec_type) {
3984 case AVMEDIA_TYPE_AUDIO:
3985 err = ff_replaygain_export(st, s->metadata);
3986 if (err < 0) {
3987 mov_read_close(s);
3988 return err;
3989 }
3990 break;
3991 case AVMEDIA_TYPE_VIDEO:
3992 if (sc->display_matrix) {
3993 AVPacketSideData *sd, *tmp;
3994
3995 tmp = av_realloc_array(st->side_data,
3996 st->nb_side_data + 1, sizeof(*tmp));
3997 if (!tmp)
3998 return AVERROR(ENOMEM);
3999
4000 st->side_data = tmp;
4001 st->nb_side_data++;
4002
4003 sd = &st->side_data[st->nb_side_data - 1];
4004 sd->type = AV_PKT_DATA_DISPLAYMATRIX;
4005 sd->size = sizeof(int32_t) * 9;
4006 sd->data = (uint8_t*)sc->display_matrix;
4007 sc->display_matrix = NULL;
4008 }
4009 break;
4010 }
4011 }
4012
4013 return 0;
4014}
4015
4016static AVIndexEntry *mov_find_next_sample(AVFormatContext *s, AVStream **st)
4017{
4018 AVIndexEntry *sample = NULL;
4019 int64_t best_dts = INT64_MAX;
4020 int i;
4021 for (i = 0; i < s->nb_streams; i++) {
4022 AVStream *avst = s->streams[i];
4023 MOVStreamContext *msc = avst->priv_data;
4024 if (msc->pb && msc->current_sample < avst->nb_index_entries) {
4025 AVIndexEntry *current_sample = &avst->index_entries[msc->current_sample];
4026 int64_t dts = av_rescale(current_sample->timestamp, AV_TIME_BASE, msc->time_scale);
4027 av_dlog(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
4028 if (!sample || (!s->pb->seekable && current_sample->pos < sample->pos) ||
4029 (s->pb->seekable &&
4030 ((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb &&
4031 ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
4032 (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) {
4033 sample = current_sample;
4034 best_dts = dts;
4035 *st = avst;
4036 }
4037 }
4038 }
4039 return sample;
4040}
4041
4042static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
4043{
4044 MOVContext *mov = s->priv_data;
4045 MOVStreamContext *sc;
4046 AVIndexEntry *sample;
4047 AVStream *st = NULL;
4048 int ret;
4049 mov->fc = s;
4050 retry:
4051 sample = mov_find_next_sample(s, &st);
4052 if (!sample) {
4053 mov->found_mdat = 0;
4054 if (!mov->next_root_atom)
4055 return AVERROR_EOF;
4056 avio_seek(s->pb, mov->next_root_atom, SEEK_SET);
4057 mov->next_root_atom = 0;
4058 if (mov_read_default(mov, s->pb, (MOVAtom){ AV_RL32("root"), INT64_MAX }) < 0 ||
4059 avio_feof(s->pb))
4060 return AVERROR_EOF;
4061 av_dlog(s, "read fragments, offset 0x%"PRIx64"\n", avio_tell(s->pb));
4062 goto retry;
4063 }
4064 sc = st->priv_data;
4065 /* must be done just before reading, to avoid infinite loop on sample */
4066 sc->current_sample++;
4067
4068 if (mov->next_root_atom) {
4069 sample->pos = FFMIN(sample->pos, mov->next_root_atom);
4070 sample->size = FFMIN(sample->size, (mov->next_root_atom - sample->pos));
4071 }
4072
4073 if (st->discard != AVDISCARD_ALL) {
4074 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
4075 av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
4076 sc->ffindex, sample->pos);
4077 return AVERROR_INVALIDDATA;
4078 }
4079 ret = av_get_packet(sc->pb, pkt, sample->size);
4080 if (ret < 0)
4081 return ret;
4082 if (sc->has_palette) {
4083 uint8_t *pal;
4084
4085 pal = av_packet_new_side_data(pkt, AV_PKT_DATA_PALETTE, AVPALETTE_SIZE);
4086 if (!pal) {
4087 av_log(mov->fc, AV_LOG_ERROR, "Cannot append palette to packet\n");
4088 } else {
4089 memcpy(pal, sc->palette, AVPALETTE_SIZE);
4090 sc->has_palette = 0;
4091 }
4092 }
4093#if CONFIG_DV_DEMUXER
4094 if (mov->dv_demux && sc->dv_audio_container) {
4095 avpriv_dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size, pkt->pos);
4096 av_free(pkt->data);
4097 pkt->size = 0;
4098 ret = avpriv_dv_get_packet(mov->dv_demux, pkt);
4099 if (ret < 0)
4100 return ret;
4101 }
4102#endif
4103 }
4104
4105 pkt->stream_index = sc->ffindex;
4106 pkt->dts = sample->timestamp;
4107 if (sc->ctts_data && sc->ctts_index < sc->ctts_count) {
4108 pkt->pts = pkt->dts + sc->dts_shift + sc->ctts_data[sc->ctts_index].duration;
4109 /* update ctts context */
4110 sc->ctts_sample++;
4111 if (sc->ctts_index < sc->ctts_count &&
4112 sc->ctts_data[sc->ctts_index].count == sc->ctts_sample) {
4113 sc->ctts_index++;
4114 sc->ctts_sample = 0;
4115 }
4116 if (sc->wrong_dts)
4117 pkt->dts = AV_NOPTS_VALUE;
4118 } else {
4119 int64_t next_dts = (sc->current_sample < st->nb_index_entries) ?
4120 st->index_entries[sc->current_sample].timestamp : st->duration;
4121 pkt->duration = next_dts - pkt->dts;
4122 pkt->pts = pkt->dts;
4123 }
4124 if (st->discard == AVDISCARD_ALL)
4125 goto retry;
4126 pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? AV_PKT_FLAG_KEY : 0;
4127 pkt->pos = sample->pos;
4128 av_dlog(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n",
4129 pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
4130 return 0;
4131}
4132
4133static int mov_seek_stream(AVFormatContext *s, AVStream *st, int64_t timestamp, int flags)
4134{
4135 MOVStreamContext *sc = st->priv_data;
4136 int sample, time_sample;
4137 int i;
4138
4139 sample = av_index_search_timestamp(st, timestamp, flags);
4140 av_dlog(s, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
4141 if (sample < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
4142 sample = 0;
4143 if (sample < 0) /* not sure what to do */
4144 return AVERROR_INVALIDDATA;
4145 sc->current_sample = sample;
4146 av_dlog(s, "stream %d, found sample %d\n", st->index, sc->current_sample);
4147 /* adjust ctts index */
4148 if (sc->ctts_data) {
4149 time_sample = 0;
4150 for (i = 0; i < sc->ctts_count; i++) {
4151 int next = time_sample + sc->ctts_data[i].count;
4152 if (next > sc->current_sample) {
4153 sc->ctts_index = i;
4154 sc->ctts_sample = sc->current_sample - time_sample;
4155 break;
4156 }
4157 time_sample = next;
4158 }
4159 }
4160 return sample;
4161}
4162
4163static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
4164{
4165 AVStream *st;
4166 int64_t seek_timestamp, timestamp;
4167 int sample;
4168 int i;
4169
4170 if (stream_index >= s->nb_streams)
4171 return AVERROR_INVALIDDATA;
4172
4173 st = s->streams[stream_index];
4174 sample = mov_seek_stream(s, st, sample_time, flags);
4175 if (sample < 0)
4176 return sample;
4177
4178 /* adjust seek timestamp to found sample timestamp */
4179 seek_timestamp = st->index_entries[sample].timestamp;
4180
4181 for (i = 0; i < s->nb_streams; i++) {
4182 MOVStreamContext *sc = s->streams[i]->priv_data;
4183 st = s->streams[i];
4184 st->skip_samples = (sample_time <= 0) ? sc->start_pad : 0;
4185
4186 if (stream_index == i)
4187 continue;
4188
4189 timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
4190 mov_seek_stream(s, st, timestamp, flags);
4191 }
4192 return 0;
4193}
4194
f6fa7814
DM		 4195#define OFFSET(x) offsetof(MOVContext, x)
4196#define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
4197static const AVOption mov_options[] = {
2ba45a60
DM		 4198 {"use_absolute_path",
4199 "allow using absolute path when opening alias, this is a possible security issue",
4200 offsetof(MOVContext, use_absolute_path), FF_OPT_TYPE_INT, {.i64 = 0},
4201 0, 1, AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_DECODING_PARAM},
4202 {"ignore_editlist", "", offsetof(MOVContext, ignore_editlist), FF_OPT_TYPE_INT, {.i64 = 0},
4203 0, 1, AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_DECODING_PARAM},
f6fa7814
DM		 4204 {"use_mfra_for",
4205 "use mfra for fragment timestamps",
4206 offsetof(MOVContext, use_mfra_for), FF_OPT_TYPE_INT, {.i64 = FF_MOV_FLAG_MFRA_AUTO},
4207 -1, FF_MOV_FLAG_MFRA_PTS, AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_DECODING_PARAM,
4208 "use_mfra_for"},
4209 {"auto", "auto", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_MFRA_AUTO}, 0, 0,
4210 AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_DECODING_PARAM, "use_mfra_for" },
4211 {"dts", "dts", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_MFRA_DTS}, 0, 0,
4212 AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_DECODING_PARAM, "use_mfra_for" },
4213 {"pts", "pts", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_MFRA_PTS}, 0, 0,
4214 AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_DECODING_PARAM, "use_mfra_for" },
4215 { "export_all", "Export unrecognized metadata entries", OFFSET(export_all),
4216 AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, .flags = FLAGS },
4217 { NULL },
2ba45a60
DM		 4218};
4219
4220static const AVClass mov_class = {
4221 .class_name = "mov,mp4,m4a,3gp,3g2,mj2",
4222 .item_name = av_default_item_name,
f6fa7814 4223 .option = mov_options,
2ba45a60
DM		 4224 .version = LIBAVUTIL_VERSION_INT,
4225};
4226
4227AVInputFormat ff_mov_demuxer = {
4228 .name = "mov,mp4,m4a,3gp,3g2,mj2",
4229 .long_name = NULL_IF_CONFIG_SMALL("QuickTime / MOV"),
f6fa7814 4230 .priv_class = &mov_class,
2ba45a60
DM		 4231 .priv_data_size = sizeof(MOVContext),
4232 .extensions = "mov,mp4,m4a,3gp,3g2,mj2",
4233 .read_probe = mov_probe,
4234 .read_header = mov_read_header,
4235 .read_packet = mov_read_packet,
4236 .read_close = mov_read_close,
4237 .read_seek = mov_read_seek,
2ba45a60
DM		 4238 .flags = AVFMT_NO_BYTE_SEEK,
4239};
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