3 * Copyright (c) 2001 Fabrice Bellard
4 * Copyright (c) 2009 Baptiste Coudurier <baptiste dot coudurier at gmail dot com>
6 * first version by Francois Revol <revol@free.fr>
7 * seek function by Gael Chardon <gael.dev@4now.net>
9 * This file is part of FFmpeg.
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.
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.
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
30 #include "libavutil/attributes.h"
31 #include "libavutil/channel_layout.h"
32 #include "libavutil/intreadwrite.h"
33 #include "libavutil/intfloat.h"
34 #include "libavutil/mathematics.h"
35 #include "libavutil/time_internal.h"
36 #include "libavutil/avstring.h"
37 #include "libavutil/dict.h"
38 #include "libavutil/display.h"
39 #include "libavutil/opt.h"
40 #include "libavutil/timecode.h"
41 #include "libavcodec/ac3tab.h"
44 #include "avio_internal.h"
47 #include "libavcodec/get_bits.h"
50 #include "replaygain.h"
56 #include "qtpalette.h"
58 /* those functions parse an atom */
59 /* links atom IDs to parse functions */
60 typedef struct MOVParseTableEntry {
62 int (*parse)(MOVContext *ctx, AVIOContext *pb, MOVAtom atom);
65 static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom);
66 static int mov_read_mfra(MOVContext *c, AVIOContext *f);
68 static int mov_metadata_track_or_disc_number(MOVContext *c, AVIOContext *pb,
69 unsigned len, const char *key)
73 short current, total = 0;
74 avio_rb16(pb); // unknown
75 current = avio_rb16(pb);
77 total = avio_rb16(pb);
79 snprintf(buf, sizeof(buf), "%d", current);
81 snprintf(buf, sizeof(buf), "%d/%d", current, total);
82 c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
83 av_dict_set(&c->fc->metadata, key, buf, 0);
88 static int mov_metadata_int8_bypass_padding(MOVContext *c, AVIOContext *pb,
89 unsigned len, const char *key)
91 /* bypass padding bytes */
96 c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
97 av_dict_set_int(&c->fc->metadata, key, avio_r8(pb), 0);
102 static int mov_metadata_int8_no_padding(MOVContext *c, AVIOContext *pb,
103 unsigned len, const char *key)
105 c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
106 av_dict_set_int(&c->fc->metadata, key, avio_r8(pb), 0);
111 static int mov_metadata_gnre(MOVContext *c, AVIOContext *pb,
112 unsigned len, const char *key)
116 avio_r8(pb); // unknown
119 if (genre < 1 || genre > ID3v1_GENRE_MAX)
121 c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
122 av_dict_set(&c->fc->metadata, key, ff_id3v1_genre_str[genre-1], 0);
127 static const uint32_t mac_to_unicode[128] = {
128 0x00C4,0x00C5,0x00C7,0x00C9,0x00D1,0x00D6,0x00DC,0x00E1,
129 0x00E0,0x00E2,0x00E4,0x00E3,0x00E5,0x00E7,0x00E9,0x00E8,
130 0x00EA,0x00EB,0x00ED,0x00EC,0x00EE,0x00EF,0x00F1,0x00F3,
131 0x00F2,0x00F4,0x00F6,0x00F5,0x00FA,0x00F9,0x00FB,0x00FC,
132 0x2020,0x00B0,0x00A2,0x00A3,0x00A7,0x2022,0x00B6,0x00DF,
133 0x00AE,0x00A9,0x2122,0x00B4,0x00A8,0x2260,0x00C6,0x00D8,
134 0x221E,0x00B1,0x2264,0x2265,0x00A5,0x00B5,0x2202,0x2211,
135 0x220F,0x03C0,0x222B,0x00AA,0x00BA,0x03A9,0x00E6,0x00F8,
136 0x00BF,0x00A1,0x00AC,0x221A,0x0192,0x2248,0x2206,0x00AB,
137 0x00BB,0x2026,0x00A0,0x00C0,0x00C3,0x00D5,0x0152,0x0153,
138 0x2013,0x2014,0x201C,0x201D,0x2018,0x2019,0x00F7,0x25CA,
139 0x00FF,0x0178,0x2044,0x20AC,0x2039,0x203A,0xFB01,0xFB02,
140 0x2021,0x00B7,0x201A,0x201E,0x2030,0x00C2,0x00CA,0x00C1,
141 0x00CB,0x00C8,0x00CD,0x00CE,0x00CF,0x00CC,0x00D3,0x00D4,
142 0xF8FF,0x00D2,0x00DA,0x00DB,0x00D9,0x0131,0x02C6,0x02DC,
143 0x00AF,0x02D8,0x02D9,0x02DA,0x00B8,0x02DD,0x02DB,0x02C7,
146 static int mov_read_mac_string(MOVContext *c, AVIOContext *pb, int len,
147 char *dst, int dstlen)
150 char *end = dst+dstlen-1;
153 for (i = 0; i < len; i++) {
154 uint8_t t, c = avio_r8(pb);
155 if (c < 0x80 && p < end)
158 PUT_UTF8(mac_to_unicode[c-0x80], t, if (p < end) *p++ = t;);
164 static int mov_read_covr(MOVContext *c, AVIOContext *pb, int type, int len)
168 MOVStreamContext *sc;
173 case 0xd: id = AV_CODEC_ID_MJPEG; break;
174 case 0xe: id = AV_CODEC_ID_PNG; break;
175 case 0x1b: id = AV_CODEC_ID_BMP; break;
177 av_log(c->fc, AV_LOG_WARNING, "Unknown cover type: 0x%x.\n", type);
182 st = avformat_new_stream(c->fc, NULL);
184 return AVERROR(ENOMEM);
185 sc = av_mallocz(sizeof(*sc));
187 return AVERROR(ENOMEM);
190 ret = av_get_packet(pb, &pkt, len);
194 st->disposition |= AV_DISPOSITION_ATTACHED_PIC;
196 st->attached_pic = pkt;
197 st->attached_pic.stream_index = st->index;
198 st->attached_pic.flags |= AV_PKT_FLAG_KEY;
200 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
201 st->codec->codec_id = id;
206 static int mov_metadata_loci(MOVContext *c, AVIOContext *pb, unsigned len)
208 char language[4] = { 0 };
209 char buf[200], place[100];
210 uint16_t langcode = 0;
211 double longitude, latitude, altitude;
212 const char *key = "location";
214 if (len < 4 + 2 + 1 + 1 + 4 + 4 + 4) {
215 av_log(c->fc, AV_LOG_ERROR, "loci too short\n");
216 return AVERROR_INVALIDDATA;
219 avio_skip(pb, 4); // version+flags
220 langcode = avio_rb16(pb);
221 ff_mov_lang_to_iso639(langcode, language);
224 len -= avio_get_str(pb, len, place, sizeof(place));
226 av_log(c->fc, AV_LOG_ERROR, "place name too long\n");
227 return AVERROR_INVALIDDATA;
229 avio_skip(pb, 1); // role
233 av_log(c->fc, AV_LOG_ERROR, "no space for coordinates left (%d)\n", len);
234 return AVERROR_INVALIDDATA;
236 longitude = ((int32_t) avio_rb32(pb)) / (float) (1 << 16);
237 latitude = ((int32_t) avio_rb32(pb)) / (float) (1 << 16);
238 altitude = ((int32_t) avio_rb32(pb)) / (float) (1 << 16);
240 // Try to output in the same format as the ?xyz field
241 snprintf(buf, sizeof(buf), "%+08.4f%+09.4f", latitude, longitude);
243 av_strlcatf(buf, sizeof(buf), "%+f", altitude);
244 av_strlcatf(buf, sizeof(buf), "/%s", place);
246 if (*language && strcmp(language, "und")) {
248 snprintf(key2, sizeof(key2), "%s-%s", key, language);
249 av_dict_set(&c->fc->metadata, key2, buf, 0);
251 c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
252 return av_dict_set(&c->fc->metadata, key, buf, 0);
255 static int mov_read_udta_string(MOVContext *c, AVIOContext *pb, MOVAtom atom)
258 char key2[32], language[4] = {0};
260 const char *key = NULL;
261 uint16_t langcode = 0;
262 uint32_t data_type = 0, str_size, str_size_alloc;
263 int (*parse)(MOVContext*, AVIOContext*, unsigned, const char*) = NULL;
267 case MKTAG( '@','P','R','M'): key = "premiere_version"; raw = 1; break;
268 case MKTAG( '@','P','R','Q'): key = "quicktime_version"; raw = 1; break;
269 case MKTAG( 'X','M','P','_'):
270 if (c->export_xmp) { key = "xmp"; raw = 1; } break;
271 case MKTAG( 'a','A','R','T'): key = "album_artist"; break;
272 case MKTAG( 'a','k','I','D'): key = "account_type";
273 parse = mov_metadata_int8_no_padding; break;
274 case MKTAG( 'a','p','I','D'): key = "account_id"; break;
275 case MKTAG( 'c','a','t','g'): key = "category"; break;
276 case MKTAG( 'c','p','i','l'): key = "compilation";
277 parse = mov_metadata_int8_no_padding; break;
278 case MKTAG( 'c','p','r','t'): key = "copyright"; break;
279 case MKTAG( 'd','e','s','c'): key = "description"; break;
280 case MKTAG( 'd','i','s','k'): key = "disc";
281 parse = mov_metadata_track_or_disc_number; break;
282 case MKTAG( 'e','g','i','d'): key = "episode_uid";
283 parse = mov_metadata_int8_no_padding; break;
284 case MKTAG( 'g','n','r','e'): key = "genre";
285 parse = mov_metadata_gnre; break;
286 case MKTAG( 'h','d','v','d'): key = "hd_video";
287 parse = mov_metadata_int8_no_padding; break;
288 case MKTAG( 'k','e','y','w'): key = "keywords"; break;
289 case MKTAG( 'l','d','e','s'): key = "synopsis"; break;
290 case MKTAG( 'l','o','c','i'):
291 return mov_metadata_loci(c, pb, atom.size);
292 case MKTAG( 'p','c','s','t'): key = "podcast";
293 parse = mov_metadata_int8_no_padding; break;
294 case MKTAG( 'p','g','a','p'): key = "gapless_playback";
295 parse = mov_metadata_int8_no_padding; break;
296 case MKTAG( 'p','u','r','d'): key = "purchase_date"; break;
297 case MKTAG( 'r','t','n','g'): key = "rating";
298 parse = mov_metadata_int8_no_padding; break;
299 case MKTAG( 's','o','a','a'): key = "sort_album_artist"; break;
300 case MKTAG( 's','o','a','l'): key = "sort_album"; break;
301 case MKTAG( 's','o','a','r'): key = "sort_artist"; break;
302 case MKTAG( 's','o','c','o'): key = "sort_composer"; break;
303 case MKTAG( 's','o','n','m'): key = "sort_name"; break;
304 case MKTAG( 's','o','s','n'): key = "sort_show"; break;
305 case MKTAG( 's','t','i','k'): key = "media_type";
306 parse = mov_metadata_int8_no_padding; break;
307 case MKTAG( 't','r','k','n'): key = "track";
308 parse = mov_metadata_track_or_disc_number; break;
309 case MKTAG( 't','v','e','n'): key = "episode_id"; break;
310 case MKTAG( 't','v','e','s'): key = "episode_sort";
311 parse = mov_metadata_int8_bypass_padding; break;
312 case MKTAG( 't','v','n','n'): key = "network"; break;
313 case MKTAG( 't','v','s','h'): key = "show"; break;
314 case MKTAG( 't','v','s','n'): key = "season_number";
315 parse = mov_metadata_int8_bypass_padding; break;
316 case MKTAG(0xa9,'A','R','T'): key = "artist"; break;
317 case MKTAG(0xa9,'P','R','D'): key = "producer"; break;
318 case MKTAG(0xa9,'a','l','b'): key = "album"; break;
319 case MKTAG(0xa9,'a','u','t'): key = "artist"; break;
320 case MKTAG(0xa9,'c','h','p'): key = "chapter"; break;
321 case MKTAG(0xa9,'c','m','t'): key = "comment"; break;
322 case MKTAG(0xa9,'c','o','m'): key = "composer"; break;
323 case MKTAG(0xa9,'c','p','y'): key = "copyright"; break;
324 case MKTAG(0xa9,'d','a','y'): key = "date"; break;
325 case MKTAG(0xa9,'d','i','r'): key = "director"; break;
326 case MKTAG(0xa9,'d','i','s'): key = "disclaimer"; break;
327 case MKTAG(0xa9,'e','d','1'): key = "edit_date"; break;
328 case MKTAG(0xa9,'e','n','c'): key = "encoder"; break;
329 case MKTAG(0xa9,'f','m','t'): key = "original_format"; break;
330 case MKTAG(0xa9,'g','e','n'): key = "genre"; break;
331 case MKTAG(0xa9,'g','r','p'): key = "grouping"; break;
332 case MKTAG(0xa9,'h','s','t'): key = "host_computer"; break;
333 case MKTAG(0xa9,'i','n','f'): key = "comment"; break;
334 case MKTAG(0xa9,'l','y','r'): key = "lyrics"; break;
335 case MKTAG(0xa9,'m','a','k'): key = "make"; break;
336 case MKTAG(0xa9,'m','o','d'): key = "model"; break;
337 case MKTAG(0xa9,'n','a','m'): key = "title"; break;
338 case MKTAG(0xa9,'o','p','e'): key = "original_artist"; break;
339 case MKTAG(0xa9,'p','r','d'): key = "producer"; break;
340 case MKTAG(0xa9,'p','r','f'): key = "performers"; break;
341 case MKTAG(0xa9,'r','e','q'): key = "playback_requirements"; break;
342 case MKTAG(0xa9,'s','r','c'): key = "original_source"; break;
343 case MKTAG(0xa9,'s','t','3'): key = "subtitle"; break;
344 case MKTAG(0xa9,'s','w','r'): key = "encoder"; break;
345 case MKTAG(0xa9,'t','o','o'): key = "encoder"; break;
346 case MKTAG(0xa9,'t','r','k'): key = "track"; break;
347 case MKTAG(0xa9,'u','r','l'): key = "URL"; break;
348 case MKTAG(0xa9,'w','r','n'): key = "warning"; break;
349 case MKTAG(0xa9,'w','r','t'): key = "composer"; break;
350 case MKTAG(0xa9,'x','y','z'): key = "location"; break;
353 if (c->itunes_metadata && atom.size > 8) {
354 int data_size = avio_rb32(pb);
355 int tag = avio_rl32(pb);
356 if (tag == MKTAG('d','a','t','a') && data_size <= atom.size) {
357 data_type = avio_rb32(pb); // type
358 avio_rb32(pb); // unknown
359 str_size = data_size - 16;
362 if (atom.type == MKTAG('c', 'o', 'v', 'r')) {
363 int ret = mov_read_covr(c, pb, data_type, str_size);
365 av_log(c->fc, AV_LOG_ERROR, "Error parsing cover art.\n");
370 } else if (atom.size > 4 && key && !c->itunes_metadata && !raw) {
371 str_size = avio_rb16(pb); // string length
372 if (str_size > atom.size) {
374 avio_seek(pb, -2, SEEK_CUR);
375 av_log(c->fc, AV_LOG_WARNING, "UDTA parsing failed retrying raw\n");
378 langcode = avio_rb16(pb);
379 ff_mov_lang_to_iso639(langcode, language);
382 str_size = atom.size;
384 if (c->export_all && !key) {
385 snprintf(tmp_key, 5, "%.4s", (char*)&atom.type);
391 if (atom.size < 0 || str_size >= INT_MAX/2)
392 return AVERROR_INVALIDDATA;
394 // worst-case requirement for output string in case of utf8 coded input
395 str_size_alloc = (raw ? str_size : str_size * 2) + 1;
396 str = av_mallocz(str_size_alloc);
398 return AVERROR(ENOMEM);
401 parse(c, pb, str_size, key);
403 if (!raw && (data_type == 3 || (data_type == 0 && (langcode < 0x400 || langcode == 0x7fff)))) { // MAC Encoded
404 mov_read_mac_string(c, pb, str_size, str, str_size_alloc);
406 int ret = ffio_read_size(pb, str, str_size);
413 c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
414 av_dict_set(&c->fc->metadata, key, str, 0);
415 if (*language && strcmp(language, "und")) {
416 snprintf(key2, sizeof(key2), "%s-%s", key, language);
417 av_dict_set(&c->fc->metadata, key2, str, 0);
420 av_log(c->fc, AV_LOG_TRACE, "lang \"%3s\" ", language);
421 av_log(c->fc, AV_LOG_TRACE, "tag \"%s\" value \"%s\" atom \"%.4s\" %d %"PRId64"\n",
422 key, str, (char*)&atom.type, str_size_alloc, atom.size);
428 static int mov_read_chpl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
431 int i, nb_chapters, str_len, version;
435 if ((atom.size -= 5) < 0)
438 version = avio_r8(pb);
441 avio_rb32(pb); // ???
442 nb_chapters = avio_r8(pb);
444 for (i = 0; i < nb_chapters; i++) {
448 start = avio_rb64(pb);
449 str_len = avio_r8(pb);
451 if ((atom.size -= 9+str_len) < 0)
454 ret = ffio_read_size(pb, str, str_len);
458 avpriv_new_chapter(c->fc, i, (AVRational){1,10000000}, start, AV_NOPTS_VALUE, str);
463 #define MIN_DATA_ENTRY_BOX_SIZE 12
464 static int mov_read_dref(MOVContext *c, AVIOContext *pb, MOVAtom atom)
467 MOVStreamContext *sc;
470 if (c->fc->nb_streams < 1)
472 st = c->fc->streams[c->fc->nb_streams-1];
475 avio_rb32(pb); // version + flags
476 entries = avio_rb32(pb);
477 if (entries > (atom.size - 1) / MIN_DATA_ENTRY_BOX_SIZE + 1 ||
478 entries >= UINT_MAX / sizeof(*sc->drefs))
479 return AVERROR_INVALIDDATA;
482 sc->drefs = av_mallocz(entries * sizeof(*sc->drefs));
484 return AVERROR(ENOMEM);
485 sc->drefs_count = entries;
487 for (i = 0; i < sc->drefs_count; i++) {
488 MOVDref *dref = &sc->drefs[i];
489 uint32_t size = avio_rb32(pb);
490 int64_t next = avio_tell(pb) + size - 4;
493 return AVERROR_INVALIDDATA;
495 dref->type = avio_rl32(pb);
496 avio_rb32(pb); // version + flags
497 av_log(c->fc, AV_LOG_TRACE, "type %.4s size %d\n", (char*)&dref->type, size);
499 if (dref->type == MKTAG('a','l','i','s') && size > 150) {
500 /* macintosh alias record */
501 uint16_t volume_len, len;
507 volume_len = avio_r8(pb);
508 volume_len = FFMIN(volume_len, 27);
509 ret = ffio_read_size(pb, dref->volume, 27);
512 dref->volume[volume_len] = 0;
513 av_log(c->fc, AV_LOG_DEBUG, "volume %s, len %d\n", dref->volume, volume_len);
518 len = FFMIN(len, 63);
519 ret = ffio_read_size(pb, dref->filename, 63);
522 dref->filename[len] = 0;
523 av_log(c->fc, AV_LOG_DEBUG, "filename %s, len %d\n", dref->filename, len);
527 /* read next level up_from_alias/down_to_target */
528 dref->nlvl_from = avio_rb16(pb);
529 dref->nlvl_to = avio_rb16(pb);
530 av_log(c->fc, AV_LOG_DEBUG, "nlvl from %d, nlvl to %d\n",
531 dref->nlvl_from, dref->nlvl_to);
535 for (type = 0; type != -1 && avio_tell(pb) < next; ) {
538 type = avio_rb16(pb);
540 av_log(c->fc, AV_LOG_DEBUG, "type %d, len %d\n", type, len);
543 if (type == 2 || type == 18) { // absolute path
545 dref->path = av_mallocz(len+1);
547 return AVERROR(ENOMEM);
549 ret = ffio_read_size(pb, dref->path, len);
551 av_freep(&dref->path);
554 if (type == 18) // no additional processing needed
556 if (len > volume_len && !strncmp(dref->path, dref->volume, volume_len)) {
558 memmove(dref->path, dref->path+volume_len, len);
561 for (j = 0; j < len; j++)
562 if (dref->path[j] == ':')
564 av_log(c->fc, AV_LOG_DEBUG, "path %s\n", dref->path);
565 } else if (type == 0) { // directory name
567 dref->dir = av_malloc(len+1);
569 return AVERROR(ENOMEM);
571 ret = ffio_read_size(pb, dref->dir, len);
573 av_freep(&dref->dir);
577 for (j = 0; j < len; j++)
578 if (dref->dir[j] == ':')
580 av_log(c->fc, AV_LOG_DEBUG, "dir %s\n", dref->dir);
585 avio_seek(pb, next, SEEK_SET);
590 static int mov_read_hdlr(MOVContext *c, AVIOContext *pb, MOVAtom atom)
594 uint32_t av_unused ctype;
599 if (c->fc->nb_streams < 1) // meta before first trak
602 st = c->fc->streams[c->fc->nb_streams-1];
604 avio_r8(pb); /* version */
605 avio_rb24(pb); /* flags */
608 ctype = avio_rl32(pb);
609 type = avio_rl32(pb); /* component subtype */
611 av_log(c->fc, AV_LOG_TRACE, "ctype= %.4s (0x%08x)\n", (char*)&ctype, ctype);
612 av_log(c->fc, AV_LOG_TRACE, "stype= %.4s\n", (char*)&type);
614 if (type == MKTAG('v','i','d','e'))
615 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
616 else if (type == MKTAG('s','o','u','n'))
617 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
618 else if (type == MKTAG('m','1','a',' '))
619 st->codec->codec_id = AV_CODEC_ID_MP2;
620 else if ((type == MKTAG('s','u','b','p')) || (type == MKTAG('c','l','c','p')))
621 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
623 avio_rb32(pb); /* component manufacture */
624 avio_rb32(pb); /* component flags */
625 avio_rb32(pb); /* component flags mask */
627 title_size = atom.size - 24;
628 if (title_size > 0) {
629 title_str = av_malloc(title_size + 1); /* Add null terminator */
631 return AVERROR(ENOMEM);
633 ret = ffio_read_size(pb, title_str, title_size);
635 av_freep(&title_str);
638 title_str[title_size] = 0;
640 int off = (!c->isom && title_str[0] == title_size - 1);
641 av_dict_set(&st->metadata, "handler_name", title_str + off, 0);
643 av_freep(&title_str);
649 int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb)
654 if (fc->nb_streams < 1)
656 st = fc->streams[fc->nb_streams-1];
658 avio_rb32(pb); /* version + flags */
659 ff_mp4_read_descr(fc, pb, &tag);
660 if (tag == MP4ESDescrTag) {
661 ff_mp4_parse_es_descr(pb, NULL);
663 avio_rb16(pb); /* ID */
665 ff_mp4_read_descr(fc, pb, &tag);
666 if (tag == MP4DecConfigDescrTag)
667 ff_mp4_read_dec_config_descr(fc, st, pb);
671 static int mov_read_esds(MOVContext *c, AVIOContext *pb, MOVAtom atom)
673 return ff_mov_read_esds(c->fc, pb);
676 static int mov_read_dac3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
679 enum AVAudioServiceType *ast;
680 int ac3info, acmod, lfeon, bsmod;
682 if (c->fc->nb_streams < 1)
684 st = c->fc->streams[c->fc->nb_streams-1];
686 ast = (enum AVAudioServiceType*)ff_stream_new_side_data(st, AV_PKT_DATA_AUDIO_SERVICE_TYPE,
689 return AVERROR(ENOMEM);
691 ac3info = avio_rb24(pb);
692 bsmod = (ac3info >> 14) & 0x7;
693 acmod = (ac3info >> 11) & 0x7;
694 lfeon = (ac3info >> 10) & 0x1;
695 st->codec->channels = ((int[]){2,1,2,3,3,4,4,5})[acmod] + lfeon;
696 st->codec->channel_layout = avpriv_ac3_channel_layout_tab[acmod];
698 st->codec->channel_layout |= AV_CH_LOW_FREQUENCY;
700 if (st->codec->channels > 1 && bsmod == 0x7)
701 *ast = AV_AUDIO_SERVICE_TYPE_KARAOKE;
703 st->codec->audio_service_type = *ast;
708 static int mov_read_dec3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
711 enum AVAudioServiceType *ast;
712 int eac3info, acmod, lfeon, bsmod;
714 if (c->fc->nb_streams < 1)
716 st = c->fc->streams[c->fc->nb_streams-1];
718 ast = (enum AVAudioServiceType*)ff_stream_new_side_data(st, AV_PKT_DATA_AUDIO_SERVICE_TYPE,
721 return AVERROR(ENOMEM);
723 /* No need to parse fields for additional independent substreams and its
724 * associated dependent substreams since libavcodec's E-AC-3 decoder
725 * does not support them yet. */
726 avio_rb16(pb); /* data_rate and num_ind_sub */
727 eac3info = avio_rb24(pb);
728 bsmod = (eac3info >> 12) & 0x1f;
729 acmod = (eac3info >> 9) & 0x7;
730 lfeon = (eac3info >> 8) & 0x1;
731 st->codec->channel_layout = avpriv_ac3_channel_layout_tab[acmod];
733 st->codec->channel_layout |= AV_CH_LOW_FREQUENCY;
734 st->codec->channels = av_get_channel_layout_nb_channels(st->codec->channel_layout);
736 if (st->codec->channels > 1 && bsmod == 0x7)
737 *ast = AV_AUDIO_SERVICE_TYPE_KARAOKE;
739 st->codec->audio_service_type = *ast;
744 static int mov_read_chan(MOVContext *c, AVIOContext *pb, MOVAtom atom)
748 if (c->fc->nb_streams < 1)
750 st = c->fc->streams[c->fc->nb_streams-1];
755 /* skip version and flags */
758 ff_mov_read_chan(c->fc, pb, st, atom.size - 4);
763 static int mov_read_wfex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
768 if (c->fc->nb_streams < 1)
770 st = c->fc->streams[c->fc->nb_streams-1];
772 if ((ret = ff_get_wav_header(pb, st->codec, atom.size, 0)) < 0)
773 av_log(c->fc, AV_LOG_WARNING, "get_wav_header failed\n");
778 static int mov_read_pasp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
780 const int num = avio_rb32(pb);
781 const int den = avio_rb32(pb);
784 if (c->fc->nb_streams < 1)
786 st = c->fc->streams[c->fc->nb_streams-1];
788 if ((st->sample_aspect_ratio.den != 1 || st->sample_aspect_ratio.num) && // default
789 (den != st->sample_aspect_ratio.den || num != st->sample_aspect_ratio.num)) {
790 av_log(c->fc, AV_LOG_WARNING,
791 "sample aspect ratio already set to %d:%d, ignoring 'pasp' atom (%d:%d)\n",
792 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
794 } else if (den != 0) {
795 av_reduce(&st->sample_aspect_ratio.num, &st->sample_aspect_ratio.den,
801 /* this atom contains actual media data */
802 static int mov_read_mdat(MOVContext *c, AVIOContext *pb, MOVAtom atom)
804 if (atom.size == 0) /* wrong one (MP4) */
807 return 0; /* now go for moov */
810 /* read major brand, minor version and compatible brands and store them as metadata */
811 static int mov_read_ftyp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
815 char* comp_brands_str;
816 uint8_t type[5] = {0};
817 int ret = ffio_read_size(pb, type, 4);
821 if (strcmp(type, "qt "))
823 av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
824 av_dict_set(&c->fc->metadata, "major_brand", type, 0);
825 minor_ver = avio_rb32(pb); /* minor version */
826 av_dict_set_int(&c->fc->metadata, "minor_version", minor_ver, 0);
828 comp_brand_size = atom.size - 8;
829 if (comp_brand_size < 0)
830 return AVERROR_INVALIDDATA;
831 comp_brands_str = av_malloc(comp_brand_size + 1); /* Add null terminator */
832 if (!comp_brands_str)
833 return AVERROR(ENOMEM);
835 ret = ffio_read_size(pb, comp_brands_str, comp_brand_size);
837 av_freep(&comp_brands_str);
840 comp_brands_str[comp_brand_size] = 0;
841 av_dict_set(&c->fc->metadata, "compatible_brands", comp_brands_str, 0);
842 av_freep(&comp_brands_str);
847 /* this atom should contain all header atoms */
848 static int mov_read_moov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
853 av_log(c->fc, AV_LOG_WARNING, "Found duplicated MOOV Atom. Skipped it\n");
854 avio_skip(pb, atom.size);
858 if ((ret = mov_read_default(c, pb, atom)) < 0)
860 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
861 /* so we don't parse the whole file if over a network */
863 return 0; /* now go for mdat */
866 static int mov_read_moof(MOVContext *c, AVIOContext *pb, MOVAtom atom)
868 if (!c->has_looked_for_mfra && c->use_mfra_for > 0) {
869 c->has_looked_for_mfra = 1;
872 av_log(c->fc, AV_LOG_VERBOSE, "stream has moof boxes, will look "
874 if ((ret = mov_read_mfra(c, pb)) < 0) {
875 av_log(c->fc, AV_LOG_VERBOSE, "found a moof box but failed to "
876 "read the mfra (may be a live ismv)\n");
879 av_log(c->fc, AV_LOG_VERBOSE, "found a moof box but stream is not "
880 "seekable, can not look for mfra\n");
883 c->fragment.moof_offset = c->fragment.implicit_offset = avio_tell(pb) - 8;
884 av_log(c->fc, AV_LOG_TRACE, "moof offset %"PRIx64"\n", c->fragment.moof_offset);
885 return mov_read_default(c, pb, atom);
888 static void mov_metadata_creation_time(AVDictionary **metadata, int64_t time)
892 struct tm *ptm, tmbuf;
894 if(time >= 2082844800)
895 time -= 2082844800; /* seconds between 1904-01-01 and Epoch */
897 ptm = gmtime_r(&timet, &tmbuf);
899 if (strftime(buffer, sizeof(buffer), "%Y-%m-%d %H:%M:%S", ptm))
900 av_dict_set(metadata, "creation_time", buffer, 0);
904 static int mov_read_mdhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
907 MOVStreamContext *sc;
909 char language[4] = {0};
911 int64_t creation_time;
913 if (c->fc->nb_streams < 1)
915 st = c->fc->streams[c->fc->nb_streams-1];
918 if (sc->time_scale) {
919 av_log(c->fc, AV_LOG_ERROR, "Multiple mdhd?\n");
920 return AVERROR_INVALIDDATA;
923 version = avio_r8(pb);
925 avpriv_request_sample(c->fc, "Version %d", version);
926 return AVERROR_PATCHWELCOME;
928 avio_rb24(pb); /* flags */
930 creation_time = avio_rb64(pb);
933 creation_time = avio_rb32(pb);
934 avio_rb32(pb); /* modification time */
936 mov_metadata_creation_time(&st->metadata, creation_time);
938 sc->time_scale = avio_rb32(pb);
939 st->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
941 lang = avio_rb16(pb); /* language */
942 if (ff_mov_lang_to_iso639(lang, language))
943 av_dict_set(&st->metadata, "language", language, 0);
944 avio_rb16(pb); /* quality */
949 static int mov_read_mvhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
951 int64_t creation_time;
952 int version = avio_r8(pb); /* version */
953 avio_rb24(pb); /* flags */
956 creation_time = avio_rb64(pb);
959 creation_time = avio_rb32(pb);
960 avio_rb32(pb); /* modification time */
962 mov_metadata_creation_time(&c->fc->metadata, creation_time);
963 c->time_scale = avio_rb32(pb); /* time scale */
965 av_log(c->fc, AV_LOG_TRACE, "time scale = %i\n", c->time_scale);
967 c->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
968 // set the AVCodecContext duration because the duration of individual tracks
970 if (c->time_scale > 0 && !c->trex_data)
971 c->fc->duration = av_rescale(c->duration, AV_TIME_BASE, c->time_scale);
972 avio_rb32(pb); /* preferred scale */
974 avio_rb16(pb); /* preferred volume */
976 avio_skip(pb, 10); /* reserved */
978 avio_skip(pb, 36); /* display matrix */
980 avio_rb32(pb); /* preview time */
981 avio_rb32(pb); /* preview duration */
982 avio_rb32(pb); /* poster time */
983 avio_rb32(pb); /* selection time */
984 avio_rb32(pb); /* selection duration */
985 avio_rb32(pb); /* current time */
986 avio_rb32(pb); /* next track ID */
991 static int mov_read_enda(MOVContext *c, AVIOContext *pb, MOVAtom atom)
996 if (c->fc->nb_streams < 1)
998 st = c->fc->streams[c->fc->nb_streams-1];
1000 little_endian = avio_rb16(pb) & 0xFF;
1001 av_log(c->fc, AV_LOG_TRACE, "enda %d\n", little_endian);
1002 if (little_endian == 1) {
1003 switch (st->codec->codec_id) {
1004 case AV_CODEC_ID_PCM_S24BE:
1005 st->codec->codec_id = AV_CODEC_ID_PCM_S24LE;
1007 case AV_CODEC_ID_PCM_S32BE:
1008 st->codec->codec_id = AV_CODEC_ID_PCM_S32LE;
1010 case AV_CODEC_ID_PCM_F32BE:
1011 st->codec->codec_id = AV_CODEC_ID_PCM_F32LE;
1013 case AV_CODEC_ID_PCM_F64BE:
1014 st->codec->codec_id = AV_CODEC_ID_PCM_F64LE;
1023 static int mov_read_colr(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1026 char color_parameter_type[5] = { 0 };
1027 int color_primaries, color_trc, color_matrix;
1030 if (c->fc->nb_streams < 1)
1032 st = c->fc->streams[c->fc->nb_streams - 1];
1034 ret = ffio_read_size(pb, color_parameter_type, 4);
1037 if (strncmp(color_parameter_type, "nclx", 4) &&
1038 strncmp(color_parameter_type, "nclc", 4)) {
1039 av_log(c->fc, AV_LOG_WARNING, "unsupported color_parameter_type %s\n",
1040 color_parameter_type);
1044 color_primaries = avio_rb16(pb);
1045 color_trc = avio_rb16(pb);
1046 color_matrix = avio_rb16(pb);
1048 av_log(c->fc, AV_LOG_TRACE,
1049 "%s: pri %d trc %d matrix %d",
1050 color_parameter_type, color_primaries, color_trc, color_matrix);
1052 if (!strncmp(color_parameter_type, "nclx", 4)) {
1053 uint8_t color_range = avio_r8(pb) >> 7;
1054 av_log(c->fc, AV_LOG_TRACE, " full %"PRIu8"", color_range);
1056 st->codec->color_range = AVCOL_RANGE_JPEG;
1058 st->codec->color_range = AVCOL_RANGE_MPEG;
1059 /* 14496-12 references JPEG XR specs (rather than the more complete
1060 * 23001-8) so some adjusting is required */
1061 if (color_primaries >= AVCOL_PRI_FILM)
1062 color_primaries = AVCOL_PRI_UNSPECIFIED;
1063 if ((color_trc >= AVCOL_TRC_LINEAR &&
1064 color_trc <= AVCOL_TRC_LOG_SQRT) ||
1065 color_trc >= AVCOL_TRC_BT2020_10)
1066 color_trc = AVCOL_TRC_UNSPECIFIED;
1067 if (color_matrix >= AVCOL_SPC_BT2020_NCL)
1068 color_matrix = AVCOL_SPC_UNSPECIFIED;
1069 st->codec->color_primaries = color_primaries;
1070 st->codec->color_trc = color_trc;
1071 st->codec->colorspace = color_matrix;
1072 } else if (!strncmp(color_parameter_type, "nclc", 4)) {
1073 /* color primaries, Table 4-4 */
1074 switch (color_primaries) {
1075 case 1: st->codec->color_primaries = AVCOL_PRI_BT709; break;
1076 case 5: st->codec->color_primaries = AVCOL_PRI_SMPTE170M; break;
1077 case 6: st->codec->color_primaries = AVCOL_PRI_SMPTE240M; break;
1079 /* color transfer, Table 4-5 */
1080 switch (color_trc) {
1081 case 1: st->codec->color_trc = AVCOL_TRC_BT709; break;
1082 case 7: st->codec->color_trc = AVCOL_TRC_SMPTE240M; break;
1084 /* color matrix, Table 4-6 */
1085 switch (color_matrix) {
1086 case 1: st->codec->colorspace = AVCOL_SPC_BT709; break;
1087 case 6: st->codec->colorspace = AVCOL_SPC_BT470BG; break;
1088 case 7: st->codec->colorspace = AVCOL_SPC_SMPTE240M; break;
1091 av_log(c->fc, AV_LOG_TRACE, "\n");
1096 static int mov_read_fiel(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1099 unsigned mov_field_order;
1100 enum AVFieldOrder decoded_field_order = AV_FIELD_UNKNOWN;
1102 if (c->fc->nb_streams < 1) // will happen with jp2 files
1104 st = c->fc->streams[c->fc->nb_streams-1];
1106 return AVERROR_INVALIDDATA;
1107 mov_field_order = avio_rb16(pb);
1108 if ((mov_field_order & 0xFF00) == 0x0100)
1109 decoded_field_order = AV_FIELD_PROGRESSIVE;
1110 else if ((mov_field_order & 0xFF00) == 0x0200) {
1111 switch (mov_field_order & 0xFF) {
1112 case 0x01: decoded_field_order = AV_FIELD_TT;
1114 case 0x06: decoded_field_order = AV_FIELD_BB;
1116 case 0x09: decoded_field_order = AV_FIELD_TB;
1118 case 0x0E: decoded_field_order = AV_FIELD_BT;
1122 if (decoded_field_order == AV_FIELD_UNKNOWN && mov_field_order) {
1123 av_log(NULL, AV_LOG_ERROR, "Unknown MOV field order 0x%04x\n", mov_field_order);
1125 st->codec->field_order = decoded_field_order;
1130 static int mov_realloc_extradata(AVCodecContext *codec, MOVAtom atom)
1133 uint64_t size = (uint64_t)codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
1134 if (size > INT_MAX || (uint64_t)atom.size > INT_MAX)
1135 return AVERROR_INVALIDDATA;
1136 if ((err = av_reallocp(&codec->extradata, size)) < 0) {
1137 codec->extradata_size = 0;
1140 codec->extradata_size = size - FF_INPUT_BUFFER_PADDING_SIZE;
1144 /* Read a whole atom into the extradata return the size of the atom read, possibly truncated if != atom.size */
1145 static int64_t mov_read_atom_into_extradata(MOVContext *c, AVIOContext *pb, MOVAtom atom,
1146 AVCodecContext *codec, uint8_t *buf)
1148 int64_t result = atom.size;
1151 AV_WB32(buf , atom.size + 8);
1152 AV_WL32(buf + 4, atom.type);
1153 err = ffio_read_size(pb, buf + 8, atom.size);
1155 codec->extradata_size -= atom.size;
1157 } else if (err < atom.size) {
1158 av_log(c->fc, AV_LOG_WARNING, "truncated extradata\n");
1159 codec->extradata_size -= atom.size - err;
1162 memset(buf + 8 + err, 0, FF_INPUT_BUFFER_PADDING_SIZE);
1166 /* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
1167 static int mov_read_extradata(MOVContext *c, AVIOContext *pb, MOVAtom atom,
1168 enum AVCodecID codec_id)
1171 uint64_t original_size;
1174 if (c->fc->nb_streams < 1) // will happen with jp2 files
1176 st = c->fc->streams[c->fc->nb_streams-1];
1178 if (st->codec->codec_id != codec_id)
1179 return 0; /* unexpected codec_id - don't mess with extradata */
1181 original_size = st->codec->extradata_size;
1182 err = mov_realloc_extradata(st->codec, atom);
1186 err = mov_read_atom_into_extradata(c, pb, atom, st->codec, st->codec->extradata + original_size);
1189 return 0; // Note: this is the original behavior to ignore truncation.
1192 /* wrapper functions for reading ALAC/AVS/MJPEG/MJPEG2000 extradata atoms only for those codecs */
1193 static int mov_read_alac(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1195 return mov_read_extradata(c, pb, atom, AV_CODEC_ID_ALAC);
1198 static int mov_read_avss(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1200 return mov_read_extradata(c, pb, atom, AV_CODEC_ID_AVS);
1203 static int mov_read_jp2h(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1205 return mov_read_extradata(c, pb, atom, AV_CODEC_ID_JPEG2000);
1208 static int mov_read_dpxe(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1210 return mov_read_extradata(c, pb, atom, AV_CODEC_ID_R10K);
1213 static int mov_read_avid(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1215 int ret = mov_read_extradata(c, pb, atom, AV_CODEC_ID_AVUI);
1217 ret = mov_read_extradata(c, pb, atom, AV_CODEC_ID_DNXHD);
1221 static int mov_read_targa_y216(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1223 int ret = mov_read_extradata(c, pb, atom, AV_CODEC_ID_TARGA_Y216);
1225 if (!ret && c->fc->nb_streams >= 1) {
1226 AVCodecContext *avctx = c->fc->streams[c->fc->nb_streams-1]->codec;
1227 if (avctx->extradata_size >= 40) {
1228 avctx->height = AV_RB16(&avctx->extradata[36]);
1229 avctx->width = AV_RB16(&avctx->extradata[38]);
1235 static int mov_read_ares(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1237 if (c->fc->nb_streams >= 1) {
1238 AVCodecContext *codec = c->fc->streams[c->fc->nb_streams-1]->codec;
1239 if (codec->codec_tag == MKTAG('A', 'V', 'i', 'n') &&
1240 codec->codec_id == AV_CODEC_ID_H264 &&
1243 /* For AVID AVCI50, force width of 1440 to be able to select the correct SPS and PPS */
1244 if (avio_rb16(pb) == 0xd4d)
1245 codec->width = 1440;
1250 return mov_read_avid(c, pb, atom);
1253 static int mov_read_aclr(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1257 uint64_t original_size;
1258 if (c->fc->nb_streams >= 1) {
1259 AVCodecContext *codec = c->fc->streams[c->fc->nb_streams-1]->codec;
1260 if (codec->codec_id == AV_CODEC_ID_H264)
1262 if (atom.size == 16) {
1263 original_size = codec->extradata_size;
1264 ret = mov_realloc_extradata(codec, atom);
1266 length = mov_read_atom_into_extradata(c, pb, atom, codec, codec->extradata + original_size);
1267 if (length == atom.size) {
1268 const uint8_t range_value = codec->extradata[original_size + 19];
1269 switch (range_value) {
1271 codec->color_range = AVCOL_RANGE_MPEG;
1274 codec->color_range = AVCOL_RANGE_JPEG;
1277 av_log(c, AV_LOG_WARNING, "ignored unknown aclr value (%d)\n", range_value);
1280 av_dlog(c, "color_range: %d\n", codec->color_range);
1282 /* For some reason the whole atom was not added to the extradata */
1283 av_log(c, AV_LOG_ERROR, "aclr not decoded - incomplete atom\n");
1286 av_log(c, AV_LOG_ERROR, "aclr not decoded - unable to add atom to extradata\n");
1289 av_log(c, AV_LOG_WARNING, "aclr not decoded - unexpected size %"PRId64"\n", atom.size);
1296 static int mov_read_svq3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1298 return mov_read_extradata(c, pb, atom, AV_CODEC_ID_SVQ3);
1301 static int mov_read_wave(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1306 if (c->fc->nb_streams < 1)
1308 st = c->fc->streams[c->fc->nb_streams-1];
1310 if ((uint64_t)atom.size > (1<<30))
1311 return AVERROR_INVALIDDATA;
1313 if (st->codec->codec_id == AV_CODEC_ID_QDM2 ||
1314 st->codec->codec_id == AV_CODEC_ID_QDMC ||
1315 st->codec->codec_id == AV_CODEC_ID_SPEEX) {
1316 // pass all frma atom to codec, needed at least for QDMC and QDM2
1317 av_freep(&st->codec->extradata);
1318 ret = ff_get_extradata(st->codec, pb, atom.size);
1321 } else if (atom.size > 8) { /* to read frma, esds atoms */
1322 if ((ret = mov_read_default(c, pb, atom)) < 0)
1325 avio_skip(pb, atom.size);
1330 * This function reads atom content and puts data in extradata without tag
1331 * nor size unlike mov_read_extradata.
1333 static int mov_read_glbl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1338 if (c->fc->nb_streams < 1)
1340 st = c->fc->streams[c->fc->nb_streams-1];
1342 if ((uint64_t)atom.size > (1<<30))
1343 return AVERROR_INVALIDDATA;
1345 if (atom.size >= 10) {
1346 // Broken files created by legacy versions of libavformat will
1347 // wrap a whole fiel atom inside of a glbl atom.
1348 unsigned size = avio_rb32(pb);
1349 unsigned type = avio_rl32(pb);
1350 avio_seek(pb, -8, SEEK_CUR);
1351 if (type == MKTAG('f','i','e','l') && size == atom.size)
1352 return mov_read_default(c, pb, atom);
1354 if (st->codec->extradata_size > 1 && st->codec->extradata) {
1355 av_log(c, AV_LOG_WARNING, "ignoring multiple glbl\n");
1358 av_freep(&st->codec->extradata);
1359 ret = ff_get_extradata(st->codec, pb, atom.size);
1366 static int mov_read_dvc1(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1369 uint8_t profile_level;
1372 if (c->fc->nb_streams < 1)
1374 st = c->fc->streams[c->fc->nb_streams-1];
1376 if (atom.size >= (1<<28) || atom.size < 7)
1377 return AVERROR_INVALIDDATA;
1379 profile_level = avio_r8(pb);
1380 if ((profile_level & 0xf0) != 0xc0)
1383 avio_seek(pb, 6, SEEK_CUR);
1384 av_freep(&st->codec->extradata);
1385 ret = ff_get_extradata(st->codec, pb, atom.size - 7);
1393 * An strf atom is a BITMAPINFOHEADER struct. This struct is 40 bytes itself,
1394 * but can have extradata appended at the end after the 40 bytes belonging
1397 static int mov_read_strf(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1402 if (c->fc->nb_streams < 1)
1404 if (atom.size <= 40)
1406 st = c->fc->streams[c->fc->nb_streams-1];
1408 if ((uint64_t)atom.size > (1<<30))
1409 return AVERROR_INVALIDDATA;
1412 av_freep(&st->codec->extradata);
1413 ret = ff_get_extradata(st->codec, pb, atom.size - 40);
1420 static int mov_read_stco(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1423 MOVStreamContext *sc;
1424 unsigned int i, entries;
1426 if (c->fc->nb_streams < 1)
1428 st = c->fc->streams[c->fc->nb_streams-1];
1431 avio_r8(pb); /* version */
1432 avio_rb24(pb); /* flags */
1434 entries = avio_rb32(pb);
1439 if (sc->chunk_offsets)
1440 av_log(c->fc, AV_LOG_WARNING, "Duplicated STCO atom\n");
1441 av_free(sc->chunk_offsets);
1442 sc->chunk_count = 0;
1443 sc->chunk_offsets = av_malloc_array(entries, sizeof(*sc->chunk_offsets));
1444 if (!sc->chunk_offsets)
1445 return AVERROR(ENOMEM);
1446 sc->chunk_count = entries;
1448 if (atom.type == MKTAG('s','t','c','o'))
1449 for (i = 0; i < entries && !pb->eof_reached; i++)
1450 sc->chunk_offsets[i] = avio_rb32(pb);
1451 else if (atom.type == MKTAG('c','o','6','4'))
1452 for (i = 0; i < entries && !pb->eof_reached; i++)
1453 sc->chunk_offsets[i] = avio_rb64(pb);
1455 return AVERROR_INVALIDDATA;
1457 sc->chunk_count = i;
1459 if (pb->eof_reached)
1466 * Compute codec id for 'lpcm' tag.
1467 * See CoreAudioTypes and AudioStreamBasicDescription at Apple.
1469 enum AVCodecID ff_mov_get_lpcm_codec_id(int bps, int flags)
1476 return ff_get_pcm_codec_id(bps, flags & 1, flags & 2, flags & 4 ? -1 : 0);
1479 static int mov_codec_id(AVStream *st, uint32_t format)
1481 int id = ff_codec_get_id(ff_codec_movaudio_tags, format);
1484 ((format & 0xFFFF) == 'm' + ('s' << 8) ||
1485 (format & 0xFFFF) == 'T' + ('S' << 8)))
1486 id = ff_codec_get_id(ff_codec_wav_tags, av_bswap32(format) & 0xFFFF);
1488 if (st->codec->codec_type != AVMEDIA_TYPE_VIDEO && id > 0) {
1489 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
1490 } else if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO &&
1491 /* skip old asf mpeg4 tag */
1492 format && format != MKTAG('m','p','4','s')) {
1493 id = ff_codec_get_id(ff_codec_movvideo_tags, format);
1495 id = ff_codec_get_id(ff_codec_bmp_tags, format);
1497 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
1498 else if (st->codec->codec_type == AVMEDIA_TYPE_DATA ||
1499 (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE &&
1500 st->codec->codec_id == AV_CODEC_ID_NONE)) {
1501 id = ff_codec_get_id(ff_codec_movsubtitle_tags, format);
1503 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
1507 st->codec->codec_tag = format;
1512 static void mov_parse_stsd_video(MOVContext *c, AVIOContext *pb,
1513 AVStream *st, MOVStreamContext *sc)
1515 uint8_t codec_name[32];
1516 unsigned int color_depth, len, j;
1517 int color_greyscale;
1520 avio_rb16(pb); /* version */
1521 avio_rb16(pb); /* revision level */
1522 avio_rb32(pb); /* vendor */
1523 avio_rb32(pb); /* temporal quality */
1524 avio_rb32(pb); /* spatial quality */
1526 st->codec->width = avio_rb16(pb); /* width */
1527 st->codec->height = avio_rb16(pb); /* height */
1529 avio_rb32(pb); /* horiz resolution */
1530 avio_rb32(pb); /* vert resolution */
1531 avio_rb32(pb); /* data size, always 0 */
1532 avio_rb16(pb); /* frames per samples */
1534 len = avio_r8(pb); /* codec name, pascal string */
1537 mov_read_mac_string(c, pb, len, codec_name, sizeof(codec_name));
1539 avio_skip(pb, 31 - len);
1542 av_dict_set(&st->metadata, "encoder", codec_name, 0);
1544 /* codec_tag YV12 triggers an UV swap in rawdec.c */
1545 if (!memcmp(codec_name, "Planar Y'CbCr 8-bit 4:2:0", 25)) {
1546 st->codec->codec_tag = MKTAG('I', '4', '2', '0');
1547 st->codec->width &= ~1;
1548 st->codec->height &= ~1;
1550 /* Flash Media Server uses tag H263 with Sorenson Spark */
1551 if (st->codec->codec_tag == MKTAG('H','2','6','3') &&
1552 !memcmp(codec_name, "Sorenson H263", 13))
1553 st->codec->codec_id = AV_CODEC_ID_FLV1;
1555 st->codec->bits_per_coded_sample = avio_rb16(pb); /* depth */
1556 color_table_id = avio_rb16(pb); /* colortable id */
1557 av_log(c->fc, AV_LOG_TRACE, "depth %d, ctab id %d\n",
1558 st->codec->bits_per_coded_sample, color_table_id);
1559 /* figure out the palette situation */
1560 color_depth = st->codec->bits_per_coded_sample & 0x1F;
1561 color_greyscale = st->codec->bits_per_coded_sample & 0x20;
1562 /* Do not create a greyscale palette for cinepak */
1563 if (color_greyscale && st->codec->codec_id == AV_CODEC_ID_CINEPAK)
1566 /* if the depth is 2, 4, or 8 bpp, file is palettized */
1567 if ((color_depth == 2) || (color_depth == 4) || (color_depth == 8)) {
1568 /* for palette traversal */
1569 unsigned int color_start, color_count, color_end;
1570 unsigned char a, r, g, b;
1572 if (color_greyscale) {
1573 int color_index, color_dec;
1574 /* compute the greyscale palette */
1575 st->codec->bits_per_coded_sample = color_depth;
1576 color_count = 1 << color_depth;
1578 color_dec = 256 / (color_count - 1);
1579 for (j = 0; j < color_count; j++) {
1580 r = g = b = color_index;
1581 sc->palette[j] = (0xFFU << 24) | (r << 16) | (g << 8) | (b);
1582 color_index -= color_dec;
1583 if (color_index < 0)
1586 } else if (color_table_id) {
1587 const uint8_t *color_table;
1588 /* if flag bit 3 is set, use the default palette */
1589 color_count = 1 << color_depth;
1590 if (color_depth == 2)
1591 color_table = ff_qt_default_palette_4;
1592 else if (color_depth == 4)
1593 color_table = ff_qt_default_palette_16;
1595 color_table = ff_qt_default_palette_256;
1597 for (j = 0; j < color_count; j++) {
1598 r = color_table[j * 3 + 0];
1599 g = color_table[j * 3 + 1];
1600 b = color_table[j * 3 + 2];
1601 sc->palette[j] = (0xFFU << 24) | (r << 16) | (g << 8) | (b);
1604 /* load the palette from the file */
1605 color_start = avio_rb32(pb);
1606 color_count = avio_rb16(pb);
1607 color_end = avio_rb16(pb);
1608 if ((color_start <= 255) && (color_end <= 255)) {
1609 for (j = color_start; j <= color_end; j++) {
1610 /* each A, R, G, or B component is 16 bits;
1611 * only use the top 8 bits */
1620 sc->palette[j] = (a << 24 ) | (r << 16) | (g << 8) | (b);
1624 sc->has_palette = 1;
1628 static void mov_parse_stsd_audio(MOVContext *c, AVIOContext *pb,
1629 AVStream *st, MOVStreamContext *sc)
1631 int bits_per_sample, flags;
1632 uint16_t version = avio_rb16(pb);
1633 AVDictionaryEntry *compatible_brands = av_dict_get(c->fc->metadata, "compatible_brands", NULL, AV_DICT_MATCH_CASE);
1635 avio_rb16(pb); /* revision level */
1636 avio_rb32(pb); /* vendor */
1638 st->codec->channels = avio_rb16(pb); /* channel count */
1639 st->codec->bits_per_coded_sample = avio_rb16(pb); /* sample size */
1640 av_log(c->fc, AV_LOG_TRACE, "audio channels %d\n", st->codec->channels);
1642 sc->audio_cid = avio_rb16(pb);
1643 avio_rb16(pb); /* packet size = 0 */
1645 st->codec->sample_rate = ((avio_rb32(pb) >> 16));
1647 // Read QT version 1 fields. In version 0 these do not exist.
1648 av_log(c->fc, AV_LOG_TRACE, "version =%d, isom =%d\n", version, c->isom);
1650 (compatible_brands && strstr(compatible_brands->value, "qt "))) {
1653 sc->samples_per_frame = avio_rb32(pb);
1654 avio_rb32(pb); /* bytes per packet */
1655 sc->bytes_per_frame = avio_rb32(pb);
1656 avio_rb32(pb); /* bytes per sample */
1657 } else if (version == 2) {
1658 avio_rb32(pb); /* sizeof struct only */
1659 st->codec->sample_rate = av_int2double(avio_rb64(pb));
1660 st->codec->channels = avio_rb32(pb);
1661 avio_rb32(pb); /* always 0x7F000000 */
1662 st->codec->bits_per_coded_sample = avio_rb32(pb);
1664 flags = avio_rb32(pb); /* lpcm format specific flag */
1665 sc->bytes_per_frame = avio_rb32(pb);
1666 sc->samples_per_frame = avio_rb32(pb);
1667 if (st->codec->codec_tag == MKTAG('l','p','c','m'))
1668 st->codec->codec_id =
1669 ff_mov_get_lpcm_codec_id(st->codec->bits_per_coded_sample,
1674 switch (st->codec->codec_id) {
1675 case AV_CODEC_ID_PCM_S8:
1676 case AV_CODEC_ID_PCM_U8:
1677 if (st->codec->bits_per_coded_sample == 16)
1678 st->codec->codec_id = AV_CODEC_ID_PCM_S16BE;
1680 case AV_CODEC_ID_PCM_S16LE:
1681 case AV_CODEC_ID_PCM_S16BE:
1682 if (st->codec->bits_per_coded_sample == 8)
1683 st->codec->codec_id = AV_CODEC_ID_PCM_S8;
1684 else if (st->codec->bits_per_coded_sample == 24)
1685 st->codec->codec_id =
1686 st->codec->codec_id == AV_CODEC_ID_PCM_S16BE ?
1687 AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE;
1688 else if (st->codec->bits_per_coded_sample == 32)
1689 st->codec->codec_id =
1690 st->codec->codec_id == AV_CODEC_ID_PCM_S16BE ?
1691 AV_CODEC_ID_PCM_S32BE : AV_CODEC_ID_PCM_S32LE;
1693 /* set values for old format before stsd version 1 appeared */
1694 case AV_CODEC_ID_MACE3:
1695 sc->samples_per_frame = 6;
1696 sc->bytes_per_frame = 2 * st->codec->channels;
1698 case AV_CODEC_ID_MACE6:
1699 sc->samples_per_frame = 6;
1700 sc->bytes_per_frame = 1 * st->codec->channels;
1702 case AV_CODEC_ID_ADPCM_IMA_QT:
1703 sc->samples_per_frame = 64;
1704 sc->bytes_per_frame = 34 * st->codec->channels;
1706 case AV_CODEC_ID_GSM:
1707 sc->samples_per_frame = 160;
1708 sc->bytes_per_frame = 33;
1714 bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
1715 if (bits_per_sample) {
1716 st->codec->bits_per_coded_sample = bits_per_sample;
1717 sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
1721 static void mov_parse_stsd_subtitle(MOVContext *c, AVIOContext *pb,
1722 AVStream *st, MOVStreamContext *sc,
1725 // ttxt stsd contains display flags, justification, background
1726 // color, fonts, and default styles, so fake an atom to read it
1727 MOVAtom fake_atom = { .size = size };
1728 // mp4s contains a regular esds atom
1729 if (st->codec->codec_tag != AV_RL32("mp4s"))
1730 mov_read_glbl(c, pb, fake_atom);
1731 st->codec->width = sc->width;
1732 st->codec->height = sc->height;
1735 static uint32_t yuv_to_rgba(uint32_t ycbcr)
1740 y = (ycbcr >> 16) & 0xFF;
1741 cr = (ycbcr >> 8) & 0xFF;
1744 b = av_clip_uint8((1164 * (y - 16) + 2018 * (cb - 128)) / 1000);
1745 g = av_clip_uint8((1164 * (y - 16) - 813 * (cr - 128) - 391 * (cb - 128)) / 1000);
1746 r = av_clip_uint8((1164 * (y - 16) + 1596 * (cr - 128) ) / 1000);
1748 return (r << 16) | (g << 8) | b;
1751 static int mov_rewrite_dvd_sub_extradata(AVStream *st)
1753 char buf[256] = {0};
1754 uint8_t *src = st->codec->extradata;
1757 if (st->codec->extradata_size != 64)
1760 if (st->codec->width > 0 && st->codec->height > 0)
1761 snprintf(buf, sizeof(buf), "size: %dx%d\n",
1762 st->codec->width, st->codec->height);
1763 av_strlcat(buf, "palette: ", sizeof(buf));
1765 for (i = 0; i < 16; i++) {
1766 uint32_t yuv = AV_RB32(src + i * 4);
1767 uint32_t rgba = yuv_to_rgba(yuv);
1769 av_strlcatf(buf, sizeof(buf), "%06"PRIx32"%s", rgba, i != 15 ? ", " : "");
1772 if (av_strlcat(buf, "\n", sizeof(buf)) >= sizeof(buf))
1775 av_freep(&st->codec->extradata);
1776 st->codec->extradata_size = 0;
1777 st->codec->extradata = av_mallocz(strlen(buf) + FF_INPUT_BUFFER_PADDING_SIZE);
1778 if (!st->codec->extradata)
1779 return AVERROR(ENOMEM);
1780 st->codec->extradata_size = strlen(buf);
1781 memcpy(st->codec->extradata, buf, st->codec->extradata_size);
1786 static int mov_parse_stsd_data(MOVContext *c, AVIOContext *pb,
1787 AVStream *st, MOVStreamContext *sc,
1792 if (st->codec->codec_tag == MKTAG('t','m','c','d')) {
1793 if ((int)size != size)
1794 return AVERROR(ENOMEM);
1796 ret = ff_get_extradata(st->codec, pb, size);
1800 MOVStreamContext *tmcd_ctx = st->priv_data;
1802 val = AV_RB32(st->codec->extradata + 4);
1803 tmcd_ctx->tmcd_flags = val;
1805 st->codec->flags2 |= CODEC_FLAG2_DROP_FRAME_TIMECODE;
1806 st->codec->time_base.den = st->codec->extradata[16]; /* number of frame */
1807 st->codec->time_base.num = 1;
1808 /* adjust for per frame dur in counter mode */
1809 if (tmcd_ctx->tmcd_flags & 0x0008) {
1810 int timescale = AV_RB32(st->codec->extradata + 8);
1811 int framedur = AV_RB32(st->codec->extradata + 12);
1812 st->codec->time_base.den *= timescale;
1813 st->codec->time_base.num *= framedur;
1816 uint32_t len = AV_RB32(st->codec->extradata + 18); /* name atom length */
1817 uint32_t format = AV_RB32(st->codec->extradata + 22);
1818 if (format == AV_RB32("name") && (int64_t)size >= (int64_t)len + 18) {
1819 uint16_t str_size = AV_RB16(st->codec->extradata + 26); /* string length */
1820 if (str_size > 0 && size >= (int)str_size + 26) {
1821 char *reel_name = av_malloc(str_size + 1);
1823 return AVERROR(ENOMEM);
1824 memcpy(reel_name, st->codec->extradata + 30, str_size);
1825 reel_name[str_size] = 0; /* Add null terminator */
1826 /* don't add reel_name if emtpy string */
1827 if (*reel_name == 0) {
1830 av_dict_set(&st->metadata, "reel_name", reel_name, AV_DICT_DONT_STRDUP_VAL);
1837 /* other codec type, just skip (rtp, mp4s ...) */
1838 avio_skip(pb, size);
1843 static int mov_finalize_stsd_codec(MOVContext *c, AVIOContext *pb,
1844 AVStream *st, MOVStreamContext *sc)
1846 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
1847 !st->codec->sample_rate && sc->time_scale > 1)
1848 st->codec->sample_rate = sc->time_scale;
1850 /* special codec parameters handling */
1851 switch (st->codec->codec_id) {
1852 #if CONFIG_DV_DEMUXER
1853 case AV_CODEC_ID_DVAUDIO:
1854 c->dv_fctx = avformat_alloc_context();
1856 av_log(c->fc, AV_LOG_ERROR, "dv demux context alloc error\n");
1857 return AVERROR(ENOMEM);
1859 c->dv_demux = avpriv_dv_init_demux(c->dv_fctx);
1861 av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
1862 return AVERROR(ENOMEM);
1864 sc->dv_audio_container = 1;
1865 st->codec->codec_id = AV_CODEC_ID_PCM_S16LE;
1868 /* no ifdef since parameters are always those */
1869 case AV_CODEC_ID_QCELP:
1870 st->codec->channels = 1;
1871 // force sample rate for qcelp when not stored in mov
1872 if (st->codec->codec_tag != MKTAG('Q','c','l','p'))
1873 st->codec->sample_rate = 8000;
1874 // FIXME: Why is the following needed for some files?
1875 sc->samples_per_frame = 160;
1876 if (!sc->bytes_per_frame)
1877 sc->bytes_per_frame = 35;
1879 case AV_CODEC_ID_AMR_NB:
1880 st->codec->channels = 1;
1881 /* force sample rate for amr, stsd in 3gp does not store sample rate */
1882 st->codec->sample_rate = 8000;
1884 case AV_CODEC_ID_AMR_WB:
1885 st->codec->channels = 1;
1886 st->codec->sample_rate = 16000;
1888 case AV_CODEC_ID_MP2:
1889 case AV_CODEC_ID_MP3:
1890 /* force type after stsd for m1a hdlr */
1891 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
1892 st->need_parsing = AVSTREAM_PARSE_FULL;
1894 case AV_CODEC_ID_GSM:
1895 case AV_CODEC_ID_ADPCM_MS:
1896 case AV_CODEC_ID_ADPCM_IMA_WAV:
1897 case AV_CODEC_ID_ILBC:
1898 case AV_CODEC_ID_MACE3:
1899 case AV_CODEC_ID_MACE6:
1900 case AV_CODEC_ID_QDM2:
1901 st->codec->block_align = sc->bytes_per_frame;
1903 case AV_CODEC_ID_ALAC:
1904 if (st->codec->extradata_size == 36) {
1905 st->codec->channels = AV_RB8 (st->codec->extradata + 21);
1906 st->codec->sample_rate = AV_RB32(st->codec->extradata + 32);
1909 case AV_CODEC_ID_AC3:
1910 case AV_CODEC_ID_EAC3:
1911 case AV_CODEC_ID_MPEG1VIDEO:
1912 case AV_CODEC_ID_VC1:
1913 st->need_parsing = AVSTREAM_PARSE_FULL;
1921 static int mov_skip_multiple_stsd(MOVContext *c, AVIOContext *pb,
1922 int codec_tag, int format,
1925 int video_codec_id = ff_codec_get_id(ff_codec_movvideo_tags, format);
1928 (codec_tag != format &&
1929 (c->fc->video_codec_id ? video_codec_id != c->fc->video_codec_id
1930 : codec_tag != MKTAG('j','p','e','g')))) {
1931 /* Multiple fourcc, we skip JPEG. This is not correct, we should
1932 * export it as a separate AVStream but this needs a few changes
1933 * in the MOV demuxer, patch welcome. */
1935 av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n");
1936 avio_skip(pb, size);
1939 if ( codec_tag == AV_RL32("avc1") ||
1940 codec_tag == AV_RL32("hvc1") ||
1941 codec_tag == AV_RL32("hev1")
1943 av_log(c->fc, AV_LOG_WARNING, "Concatenated H.264 or H.265 might not play correctly.\n");
1948 int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries)
1951 MOVStreamContext *sc;
1952 int pseudo_stream_id;
1954 if (c->fc->nb_streams < 1)
1956 st = c->fc->streams[c->fc->nb_streams-1];
1959 for (pseudo_stream_id = 0;
1960 pseudo_stream_id < entries && !pb->eof_reached;
1961 pseudo_stream_id++) {
1962 //Parsing Sample description table
1964 int ret, dref_id = 1;
1965 MOVAtom a = { AV_RL32("stsd") };
1966 int64_t start_pos = avio_tell(pb);
1967 int64_t size = avio_rb32(pb); /* size */
1968 uint32_t format = avio_rl32(pb); /* data format */
1971 avio_rb32(pb); /* reserved */
1972 avio_rb16(pb); /* reserved */
1973 dref_id = avio_rb16(pb);
1974 }else if (size <= 7){
1975 av_log(c->fc, AV_LOG_ERROR, "invalid size %"PRId64" in stsd\n", size);
1976 return AVERROR_INVALIDDATA;
1979 if (mov_skip_multiple_stsd(c, pb, st->codec->codec_tag, format,
1980 size - (avio_tell(pb) - start_pos)))
1983 sc->pseudo_stream_id = st->codec->codec_tag ? -1 : pseudo_stream_id;
1984 sc->dref_id= dref_id;
1986 id = mov_codec_id(st, format);
1988 av_log(c->fc, AV_LOG_TRACE, "size=%"PRId64" 4CC= %c%c%c%c codec_type=%d\n", size,
1989 (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff,
1990 (format >> 24) & 0xff, st->codec->codec_type);
1992 if (st->codec->codec_type==AVMEDIA_TYPE_VIDEO) {
1993 st->codec->codec_id = id;
1994 mov_parse_stsd_video(c, pb, st, sc);
1995 } else if (st->codec->codec_type==AVMEDIA_TYPE_AUDIO) {
1996 st->codec->codec_id = id;
1997 mov_parse_stsd_audio(c, pb, st, sc);
1998 } else if (st->codec->codec_type==AVMEDIA_TYPE_SUBTITLE){
1999 st->codec->codec_id = id;
2000 mov_parse_stsd_subtitle(c, pb, st, sc,
2001 size - (avio_tell(pb) - start_pos));
2003 ret = mov_parse_stsd_data(c, pb, st, sc,
2004 size - (avio_tell(pb) - start_pos));
2008 /* this will read extra atoms at the end (wave, alac, damr, avcC, hvcC, SMI ...) */
2009 a.size = size - (avio_tell(pb) - start_pos);
2011 if ((ret = mov_read_default(c, pb, a)) < 0)
2013 } else if (a.size > 0)
2014 avio_skip(pb, a.size);
2017 if (pb->eof_reached)
2020 return mov_finalize_stsd_codec(c, pb, st, sc);
2023 static int mov_read_stsd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2027 avio_r8(pb); /* version */
2028 avio_rb24(pb); /* flags */
2029 entries = avio_rb32(pb);
2031 return ff_mov_read_stsd_entries(c, pb, entries);
2034 static int mov_read_stsc(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2037 MOVStreamContext *sc;
2038 unsigned int i, entries;
2040 if (c->fc->nb_streams < 1)
2042 st = c->fc->streams[c->fc->nb_streams-1];
2045 avio_r8(pb); /* version */
2046 avio_rb24(pb); /* flags */
2048 entries = avio_rb32(pb);
2050 av_log(c->fc, AV_LOG_TRACE, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
2055 av_log(c->fc, AV_LOG_WARNING, "Duplicated STSC atom\n");
2056 av_free(sc->stsc_data);
2058 sc->stsc_data = av_malloc_array(entries, sizeof(*sc->stsc_data));
2060 return AVERROR(ENOMEM);
2062 for (i = 0; i < entries && !pb->eof_reached; i++) {
2063 sc->stsc_data[i].first = avio_rb32(pb);
2064 sc->stsc_data[i].count = avio_rb32(pb);
2065 sc->stsc_data[i].id = avio_rb32(pb);
2070 if (pb->eof_reached)
2076 static int mov_read_stps(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2079 MOVStreamContext *sc;
2080 unsigned i, entries;
2082 if (c->fc->nb_streams < 1)
2084 st = c->fc->streams[c->fc->nb_streams-1];
2087 avio_rb32(pb); // version + flags
2089 entries = avio_rb32(pb);
2091 av_log(c->fc, AV_LOG_WARNING, "Duplicated STPS atom\n");
2092 av_free(sc->stps_data);
2094 sc->stps_data = av_malloc_array(entries, sizeof(*sc->stps_data));
2096 return AVERROR(ENOMEM);
2098 for (i = 0; i < entries && !pb->eof_reached; i++) {
2099 sc->stps_data[i] = avio_rb32(pb);
2100 //av_log(c->fc, AV_LOG_TRACE, "stps %d\n", sc->stps_data[i]);
2105 if (pb->eof_reached)
2111 static int mov_read_stss(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2114 MOVStreamContext *sc;
2115 unsigned int i, entries;
2117 if (c->fc->nb_streams < 1)
2119 st = c->fc->streams[c->fc->nb_streams-1];
2122 avio_r8(pb); /* version */
2123 avio_rb24(pb); /* flags */
2125 entries = avio_rb32(pb);
2127 av_log(c->fc, AV_LOG_TRACE, "keyframe_count = %d\n", entries);
2131 sc->keyframe_absent = 1;
2132 if (!st->need_parsing && st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2133 st->need_parsing = AVSTREAM_PARSE_HEADERS;
2137 av_log(c->fc, AV_LOG_WARNING, "Duplicated STSS atom\n");
2138 if (entries >= UINT_MAX / sizeof(int))
2139 return AVERROR_INVALIDDATA;
2140 av_freep(&sc->keyframes);
2141 sc->keyframe_count = 0;
2142 sc->keyframes = av_malloc_array(entries, sizeof(*sc->keyframes));
2144 return AVERROR(ENOMEM);
2146 for (i = 0; i < entries && !pb->eof_reached; i++) {
2147 sc->keyframes[i] = avio_rb32(pb);
2148 //av_log(c->fc, AV_LOG_TRACE, "keyframes[]=%d\n", sc->keyframes[i]);
2151 sc->keyframe_count = i;
2153 if (pb->eof_reached)
2159 static int mov_read_stsz(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2162 MOVStreamContext *sc;
2163 unsigned int i, entries, sample_size, field_size, num_bytes;
2168 if (c->fc->nb_streams < 1)
2170 st = c->fc->streams[c->fc->nb_streams-1];
2173 avio_r8(pb); /* version */
2174 avio_rb24(pb); /* flags */
2176 if (atom.type == MKTAG('s','t','s','z')) {
2177 sample_size = avio_rb32(pb);
2178 if (!sc->sample_size) /* do not overwrite value computed in stsd */
2179 sc->sample_size = sample_size;
2180 sc->stsz_sample_size = sample_size;
2184 avio_rb24(pb); /* reserved */
2185 field_size = avio_r8(pb);
2187 entries = avio_rb32(pb);
2189 av_log(c->fc, AV_LOG_TRACE, "sample_size = %d sample_count = %d\n", sc->sample_size, entries);
2191 sc->sample_count = entries;
2195 if (field_size != 4 && field_size != 8 && field_size != 16 && field_size != 32) {
2196 av_log(c->fc, AV_LOG_ERROR, "Invalid sample field size %d\n", field_size);
2197 return AVERROR_INVALIDDATA;
2202 if (entries >= (UINT_MAX - 4) / field_size)
2203 return AVERROR_INVALIDDATA;
2204 if (sc->sample_sizes)
2205 av_log(c->fc, AV_LOG_WARNING, "Duplicated STSZ atom\n");
2206 av_free(sc->sample_sizes);
2207 sc->sample_count = 0;
2208 sc->sample_sizes = av_malloc_array(entries, sizeof(*sc->sample_sizes));
2209 if (!sc->sample_sizes)
2210 return AVERROR(ENOMEM);
2212 num_bytes = (entries*field_size+4)>>3;
2214 buf = av_malloc(num_bytes+FF_INPUT_BUFFER_PADDING_SIZE);
2216 av_freep(&sc->sample_sizes);
2217 return AVERROR(ENOMEM);
2220 ret = ffio_read_size(pb, buf, num_bytes);
2222 av_freep(&sc->sample_sizes);
2227 init_get_bits(&gb, buf, 8*num_bytes);
2229 for (i = 0; i < entries && !pb->eof_reached; i++) {
2230 sc->sample_sizes[i] = get_bits_long(&gb, field_size);
2231 sc->data_size += sc->sample_sizes[i];
2234 sc->sample_count = i;
2238 if (pb->eof_reached)
2244 static int mov_read_stts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2247 MOVStreamContext *sc;
2248 unsigned int i, entries;
2250 int64_t total_sample_count=0;
2252 if (c->fc->nb_streams < 1)
2254 st = c->fc->streams[c->fc->nb_streams-1];
2257 avio_r8(pb); /* version */
2258 avio_rb24(pb); /* flags */
2259 entries = avio_rb32(pb);
2261 av_log(c->fc, AV_LOG_TRACE, "track[%i].stts.entries = %i\n",
2262 c->fc->nb_streams-1, entries);
2265 av_log(c->fc, AV_LOG_WARNING, "Duplicated STTS atom\n");
2266 av_free(sc->stts_data);
2268 sc->stts_data = av_malloc_array(entries, sizeof(*sc->stts_data));
2270 return AVERROR(ENOMEM);
2272 for (i = 0; i < entries && !pb->eof_reached; i++) {
2273 int sample_duration;
2276 sample_count=avio_rb32(pb);
2277 sample_duration = avio_rb32(pb);
2279 if (sample_count < 0) {
2280 av_log(c->fc, AV_LOG_ERROR, "Invalid sample_count=%d\n", sample_count);
2281 return AVERROR_INVALIDDATA;
2283 sc->stts_data[i].count= sample_count;
2284 sc->stts_data[i].duration= sample_duration;
2286 av_log(c->fc, AV_LOG_TRACE, "sample_count=%d, sample_duration=%d\n",
2287 sample_count, sample_duration);
2291 && sample_count == 1
2292 && total_sample_count > 100
2293 && sample_duration/10 > duration / total_sample_count)
2294 sample_duration = duration / total_sample_count;
2295 duration+=(int64_t)sample_duration*sample_count;
2296 total_sample_count+=sample_count;
2301 sc->duration_for_fps += duration;
2302 sc->nb_frames_for_fps += total_sample_count;
2304 if (pb->eof_reached)
2307 st->nb_frames= total_sample_count;
2309 st->duration= duration;
2310 sc->track_end = duration;
2314 static void mov_update_dts_shift(MOVStreamContext *sc, int duration)
2317 sc->dts_shift = FFMAX(sc->dts_shift, -duration);
2321 static int mov_read_ctts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2324 MOVStreamContext *sc;
2325 unsigned int i, entries;
2327 if (c->fc->nb_streams < 1)
2329 st = c->fc->streams[c->fc->nb_streams-1];
2332 avio_r8(pb); /* version */
2333 avio_rb24(pb); /* flags */
2334 entries = avio_rb32(pb);
2336 av_log(c->fc, AV_LOG_TRACE, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
2340 if (entries >= UINT_MAX / sizeof(*sc->ctts_data))
2341 return AVERROR_INVALIDDATA;
2342 av_freep(&sc->ctts_data);
2343 sc->ctts_data = av_realloc(NULL, entries * sizeof(*sc->ctts_data));
2345 return AVERROR(ENOMEM);
2347 for (i = 0; i < entries && !pb->eof_reached; i++) {
2348 int count =avio_rb32(pb);
2349 int duration =avio_rb32(pb);
2351 sc->ctts_data[i].count = count;
2352 sc->ctts_data[i].duration= duration;
2354 av_log(c->fc, AV_LOG_TRACE, "count=%d, duration=%d\n",
2357 if (FFABS(duration) > (1<<28) && i+2<entries) {
2358 av_log(c->fc, AV_LOG_WARNING, "CTTS invalid\n");
2359 av_freep(&sc->ctts_data);
2365 mov_update_dts_shift(sc, duration);
2370 if (pb->eof_reached)
2373 av_log(c->fc, AV_LOG_TRACE, "dts shift %d\n", sc->dts_shift);
2378 static int mov_read_sbgp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2381 MOVStreamContext *sc;
2382 unsigned int i, entries;
2384 uint32_t grouping_type;
2386 if (c->fc->nb_streams < 1)
2388 st = c->fc->streams[c->fc->nb_streams-1];
2391 version = avio_r8(pb); /* version */
2392 avio_rb24(pb); /* flags */
2393 grouping_type = avio_rl32(pb);
2394 if (grouping_type != MKTAG( 'r','a','p',' '))
2395 return 0; /* only support 'rap ' grouping */
2397 avio_rb32(pb); /* grouping_type_parameter */
2399 entries = avio_rb32(pb);
2403 av_log(c->fc, AV_LOG_WARNING, "Duplicated SBGP atom\n");
2404 av_free(sc->rap_group);
2405 sc->rap_group_count = 0;
2406 sc->rap_group = av_malloc_array(entries, sizeof(*sc->rap_group));
2408 return AVERROR(ENOMEM);
2410 for (i = 0; i < entries && !pb->eof_reached; i++) {
2411 sc->rap_group[i].count = avio_rb32(pb); /* sample_count */
2412 sc->rap_group[i].index = avio_rb32(pb); /* group_description_index */
2415 sc->rap_group_count = i;
2417 return pb->eof_reached ? AVERROR_EOF : 0;
2420 static void mov_build_index(MOVContext *mov, AVStream *st)
2422 MOVStreamContext *sc = st->priv_data;
2423 int64_t current_offset;
2424 int64_t current_dts = 0;
2425 unsigned int stts_index = 0;
2426 unsigned int stsc_index = 0;
2427 unsigned int stss_index = 0;
2428 unsigned int stps_index = 0;
2430 uint64_t stream_size = 0;
2432 if (sc->elst_count) {
2433 int i, edit_start_index = 0, unsupported = 0;
2434 int64_t empty_duration = 0; // empty duration of the first edit list entry
2435 int64_t start_time = 0; // start time of the media
2437 for (i = 0; i < sc->elst_count; i++) {
2438 const MOVElst *e = &sc->elst_data[i];
2439 if (i == 0 && e->time == -1) {
2440 /* if empty, the first entry is the start time of the stream
2441 * relative to the presentation itself */
2442 empty_duration = e->duration;
2443 edit_start_index = 1;
2444 } else if (i == edit_start_index && e->time >= 0) {
2445 start_time = e->time;
2450 av_log(mov->fc, AV_LOG_WARNING, "multiple edit list entries, "
2451 "a/v desync might occur, patch welcome\n");
2453 /* adjust first dts according to edit list */
2454 if ((empty_duration || start_time) && mov->time_scale > 0) {
2456 empty_duration = av_rescale(empty_duration, sc->time_scale, mov->time_scale);
2457 sc->time_offset = start_time - empty_duration;
2458 current_dts = -sc->time_offset;
2459 if (sc->ctts_count>0 && sc->stts_count>0 &&
2460 sc->ctts_data[0].duration / FFMAX(sc->stts_data[0].duration, 1) > 16) {
2461 /* more than 16 frames delay, dts are likely wrong
2462 this happens with files created by iMovie */
2464 st->codec->has_b_frames = 1;
2469 /* only use old uncompressed audio chunk demuxing when stts specifies it */
2470 if (!(st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
2471 sc->stts_count == 1 && sc->stts_data[0].duration == 1)) {
2472 unsigned int current_sample = 0;
2473 unsigned int stts_sample = 0;
2474 unsigned int sample_size;
2475 unsigned int distance = 0;
2476 unsigned int rap_group_index = 0;
2477 unsigned int rap_group_sample = 0;
2478 int64_t last_dts = 0;
2479 int64_t dts_correction = 0;
2480 int rap_group_present = sc->rap_group_count && sc->rap_group;
2481 int key_off = (sc->keyframe_count && sc->keyframes[0] > 0) || (sc->stps_count && sc->stps_data[0] > 0);
2483 current_dts -= sc->dts_shift;
2484 last_dts = current_dts;
2486 if (!sc->sample_count || st->nb_index_entries)
2488 if (sc->sample_count >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries)
2490 if (av_reallocp_array(&st->index_entries,
2491 st->nb_index_entries + sc->sample_count,
2492 sizeof(*st->index_entries)) < 0) {
2493 st->nb_index_entries = 0;
2496 st->index_entries_allocated_size = (st->nb_index_entries + sc->sample_count) * sizeof(*st->index_entries);
2498 for (i = 0; i < sc->chunk_count; i++) {
2499 int64_t next_offset = i+1 < sc->chunk_count ? sc->chunk_offsets[i+1] : INT64_MAX;
2500 current_offset = sc->chunk_offsets[i];
2501 while (stsc_index + 1 < sc->stsc_count &&
2502 i + 1 == sc->stsc_data[stsc_index + 1].first)
2505 if (next_offset > current_offset && sc->sample_size>0 && sc->sample_size < sc->stsz_sample_size &&
2506 sc->stsc_data[stsc_index].count * (int64_t)sc->stsz_sample_size > next_offset - current_offset) {
2507 av_log(mov->fc, AV_LOG_WARNING, "STSZ sample size %d invalid (too large), ignoring\n", sc->stsz_sample_size);
2508 sc->stsz_sample_size = sc->sample_size;
2510 if (sc->stsz_sample_size>0 && sc->stsz_sample_size < sc->sample_size) {
2511 av_log(mov->fc, AV_LOG_WARNING, "STSZ sample size %d invalid (too small), ignoring\n", sc->stsz_sample_size);
2512 sc->stsz_sample_size = sc->sample_size;
2515 for (j = 0; j < sc->stsc_data[stsc_index].count; j++) {
2517 if (current_sample >= sc->sample_count) {
2518 av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
2522 if (!sc->keyframe_absent && (!sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index])) {
2524 if (stss_index + 1 < sc->keyframe_count)
2526 } else if (sc->stps_count && current_sample+key_off == sc->stps_data[stps_index]) {
2528 if (stps_index + 1 < sc->stps_count)
2531 if (rap_group_present && rap_group_index < sc->rap_group_count) {
2532 if (sc->rap_group[rap_group_index].index > 0)
2534 if (++rap_group_sample == sc->rap_group[rap_group_index].count) {
2535 rap_group_sample = 0;
2539 if (sc->keyframe_absent
2541 && !rap_group_present
2542 && (st->codec->codec_type == AVMEDIA_TYPE_AUDIO || (i==0 && j==0)))
2546 sample_size = sc->stsz_sample_size > 0 ? sc->stsz_sample_size : sc->sample_sizes[current_sample];
2547 if (sc->pseudo_stream_id == -1 ||
2548 sc->stsc_data[stsc_index].id - 1 == sc->pseudo_stream_id) {
2549 AVIndexEntry *e = &st->index_entries[st->nb_index_entries++];
2550 e->pos = current_offset;
2551 e->timestamp = current_dts;
2552 e->size = sample_size;
2553 e->min_distance = distance;
2554 e->flags = keyframe ? AVINDEX_KEYFRAME : 0;
2555 av_log(mov->fc, AV_LOG_TRACE, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
2556 "size %d, distance %d, keyframe %d\n", st->index, current_sample,
2557 current_offset, current_dts, sample_size, distance, keyframe);
2558 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && st->nb_index_entries < 100)
2559 ff_rfps_add_frame(mov->fc, st, current_dts);
2562 current_offset += sample_size;
2563 stream_size += sample_size;
2565 /* A negative sample duration is invalid based on the spec,
2566 * but some samples need it to correct the DTS. */
2567 if (sc->stts_data[stts_index].duration < 0) {
2568 av_log(mov->fc, AV_LOG_WARNING,
2569 "Invalid SampleDelta %d in STTS, at %d st:%d\n",
2570 sc->stts_data[stts_index].duration, stts_index,
2572 dts_correction += sc->stts_data[stts_index].duration - 1;
2573 sc->stts_data[stts_index].duration = 1;
2575 current_dts += sc->stts_data[stts_index].duration;
2576 if (!dts_correction || current_dts + dts_correction > last_dts) {
2577 current_dts += dts_correction;
2580 /* Avoid creating non-monotonous DTS */
2581 dts_correction += current_dts - last_dts - 1;
2582 current_dts = last_dts + 1;
2584 last_dts = current_dts;
2588 if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
2594 if (st->duration > 0)
2595 st->codec->bit_rate = stream_size*8*sc->time_scale/st->duration;
2597 unsigned chunk_samples, total = 0;
2599 // compute total chunk count
2600 for (i = 0; i < sc->stsc_count; i++) {
2601 unsigned count, chunk_count;
2603 chunk_samples = sc->stsc_data[i].count;
2604 if (i != sc->stsc_count - 1 &&
2605 sc->samples_per_frame && chunk_samples % sc->samples_per_frame) {
2606 av_log(mov->fc, AV_LOG_ERROR, "error unaligned chunk\n");
2610 if (sc->samples_per_frame >= 160) { // gsm
2611 count = chunk_samples / sc->samples_per_frame;
2612 } else if (sc->samples_per_frame > 1) {
2613 unsigned samples = (1024/sc->samples_per_frame)*sc->samples_per_frame;
2614 count = (chunk_samples+samples-1) / samples;
2616 count = (chunk_samples+1023) / 1024;
2619 if (i < sc->stsc_count - 1)
2620 chunk_count = sc->stsc_data[i+1].first - sc->stsc_data[i].first;
2622 chunk_count = sc->chunk_count - (sc->stsc_data[i].first - 1);
2623 total += chunk_count * count;
2626 av_log(mov->fc, AV_LOG_TRACE, "chunk count %d\n", total);
2627 if (total >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries)
2629 if (av_reallocp_array(&st->index_entries,
2630 st->nb_index_entries + total,
2631 sizeof(*st->index_entries)) < 0) {
2632 st->nb_index_entries = 0;
2635 st->index_entries_allocated_size = (st->nb_index_entries + total) * sizeof(*st->index_entries);
2638 for (i = 0; i < sc->chunk_count; i++) {
2639 current_offset = sc->chunk_offsets[i];
2640 if (stsc_index + 1 < sc->stsc_count &&
2641 i + 1 == sc->stsc_data[stsc_index + 1].first)
2643 chunk_samples = sc->stsc_data[stsc_index].count;
2645 while (chunk_samples > 0) {
2647 unsigned size, samples;
2649 if (sc->samples_per_frame > 1 && !sc->bytes_per_frame) {
2650 avpriv_request_sample(mov->fc,
2651 "Zero bytes per frame, but %d samples per frame",
2652 sc->samples_per_frame);
2656 if (sc->samples_per_frame >= 160) { // gsm
2657 samples = sc->samples_per_frame;
2658 size = sc->bytes_per_frame;
2660 if (sc->samples_per_frame > 1) {
2661 samples = FFMIN((1024 / sc->samples_per_frame)*
2662 sc->samples_per_frame, chunk_samples);
2663 size = (samples / sc->samples_per_frame) * sc->bytes_per_frame;
2665 samples = FFMIN(1024, chunk_samples);
2666 size = samples * sc->sample_size;
2670 if (st->nb_index_entries >= total) {
2671 av_log(mov->fc, AV_LOG_ERROR, "wrong chunk count %d\n", total);
2674 e = &st->index_entries[st->nb_index_entries++];
2675 e->pos = current_offset;
2676 e->timestamp = current_dts;
2678 e->min_distance = 0;
2679 e->flags = AVINDEX_KEYFRAME;
2680 av_log(mov->fc, AV_LOG_TRACE, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", "
2681 "size %d, duration %d\n", st->index, i, current_offset, current_dts,
2684 current_offset += size;
2685 current_dts += samples;
2686 chunk_samples -= samples;
2692 static int mov_open_dref(MOVContext *c, AVIOContext **pb, const char *src, MOVDref *ref,
2693 AVIOInterruptCB *int_cb)
2695 AVOpenCallback open_func = c->fc->open_cb;
2698 open_func = ffio_open2_wrapper;
2700 /* try relative path, we do not try the absolute because it can leak information about our
2701 system to an attacker */
2702 if (ref->nlvl_to > 0 && ref->nlvl_from > 0 && ref->path[0] != '/') {
2703 char filename[1025];
2704 const char *src_path;
2707 /* find a source dir */
2708 src_path = strrchr(src, '/');
2714 /* find a next level down to target */
2715 for (i = 0, l = strlen(ref->path) - 1; l >= 0; l--)
2716 if (ref->path[l] == '/') {
2717 if (i == ref->nlvl_to - 1)
2723 /* compose filename if next level down to target was found */
2724 if (i == ref->nlvl_to - 1 && src_path - src < sizeof(filename)) {
2725 memcpy(filename, src, src_path - src);
2726 filename[src_path - src] = 0;
2728 for (i = 1; i < ref->nlvl_from; i++)
2729 av_strlcat(filename, "../", sizeof(filename));
2731 av_strlcat(filename, ref->path + l + 1, sizeof(filename));
2732 if (!c->use_absolute_path && !c->fc->open_cb)
2733 if(strstr(ref->path + l + 1, "..") || ref->nlvl_from > 1)
2734 return AVERROR(ENOENT);
2736 if (strlen(filename) + 1 == sizeof(filename))
2737 return AVERROR(ENOENT);
2738 if (!open_func(c->fc, pb, filename, AVIO_FLAG_READ, int_cb, NULL))
2741 } else if (c->use_absolute_path) {
2742 av_log(c->fc, AV_LOG_WARNING, "Using absolute path on user request, "
2743 "this is a possible security issue\n");
2744 if (!open_func(c->fc, pb, ref->path, AVIO_FLAG_READ, int_cb, NULL))
2746 } else if (c->fc->open_cb) {
2747 if (!open_func(c->fc, pb, ref->path, AVIO_FLAG_READ, int_cb, NULL))
2750 av_log(c->fc, AV_LOG_ERROR,
2751 "Absolute path %s not tried for security reasons, "
2752 "set demuxer option use_absolute_path to allow absolute paths\n",
2756 return AVERROR(ENOENT);
2759 static void fix_timescale(MOVContext *c, MOVStreamContext *sc)
2761 if (sc->time_scale <= 0) {
2762 av_log(c->fc, AV_LOG_WARNING, "stream %d, timescale not set\n", sc->ffindex);
2763 sc->time_scale = c->time_scale;
2764 if (sc->time_scale <= 0)
2769 static int mov_read_trak(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2772 MOVStreamContext *sc;
2775 st = avformat_new_stream(c->fc, NULL);
2776 if (!st) return AVERROR(ENOMEM);
2777 st->id = c->fc->nb_streams;
2778 sc = av_mallocz(sizeof(MOVStreamContext));
2779 if (!sc) return AVERROR(ENOMEM);
2782 st->codec->codec_type = AVMEDIA_TYPE_DATA;
2783 sc->ffindex = st->index;
2785 if ((ret = mov_read_default(c, pb, atom)) < 0)
2789 if (sc->chunk_count && (!sc->stts_count || !sc->stsc_count ||
2790 (!sc->sample_size && !sc->sample_count))) {
2791 av_log(c->fc, AV_LOG_ERROR, "stream %d, missing mandatory atoms, broken header\n",
2796 fix_timescale(c, sc);
2798 avpriv_set_pts_info(st, 64, 1, sc->time_scale);
2800 mov_build_index(c, st);
2802 if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) {
2803 MOVDref *dref = &sc->drefs[sc->dref_id - 1];
2804 if (mov_open_dref(c, &sc->pb, c->fc->filename, dref,
2805 &c->fc->interrupt_callback) < 0)
2806 av_log(c->fc, AV_LOG_ERROR,
2807 "stream %d, error opening alias: path='%s', dir='%s', "
2808 "filename='%s', volume='%s', nlvl_from=%d, nlvl_to=%d\n",
2809 st->index, dref->path, dref->dir, dref->filename,
2810 dref->volume, dref->nlvl_from, dref->nlvl_to);
2813 sc->pb_is_copied = 1;
2816 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2817 if (!st->sample_aspect_ratio.num && st->codec->width && st->codec->height &&
2818 sc->height && sc->width &&
2819 (st->codec->width != sc->width || st->codec->height != sc->height)) {
2820 st->sample_aspect_ratio = av_d2q(((double)st->codec->height * sc->width) /
2821 ((double)st->codec->width * sc->height), INT_MAX);
2824 #if FF_API_R_FRAME_RATE
2825 if (sc->stts_count == 1 || (sc->stts_count == 2 && sc->stts_data[1].count == 1))
2826 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den,
2827 sc->time_scale, sc->stts_data[0].duration, INT_MAX);
2831 // done for ai5q, ai52, ai55, ai1q, ai12 and ai15.
2832 if (!st->codec->extradata_size && st->codec->codec_id == AV_CODEC_ID_H264 &&
2833 TAG_IS_AVCI(st->codec->codec_tag)) {
2834 ret = ff_generate_avci_extradata(st);
2839 switch (st->codec->codec_id) {
2840 #if CONFIG_H261_DECODER
2841 case AV_CODEC_ID_H261:
2843 #if CONFIG_H263_DECODER
2844 case AV_CODEC_ID_H263:
2846 #if CONFIG_MPEG4_DECODER
2847 case AV_CODEC_ID_MPEG4:
2849 st->codec->width = 0; /* let decoder init width/height */
2850 st->codec->height= 0;
2854 /* Do not need those anymore. */
2855 av_freep(&sc->chunk_offsets);
2856 av_freep(&sc->stsc_data);
2857 av_freep(&sc->sample_sizes);
2858 av_freep(&sc->keyframes);
2859 av_freep(&sc->stts_data);
2860 av_freep(&sc->stps_data);
2861 av_freep(&sc->elst_data);
2862 av_freep(&sc->rap_group);
2867 static int mov_read_ilst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2870 c->itunes_metadata = 1;
2871 ret = mov_read_default(c, pb, atom);
2872 c->itunes_metadata = 0;
2876 static int mov_read_custom_2plus(MOVContext *c, AVIOContext *pb, int size)
2878 int64_t end = avio_tell(pb) + size;
2879 uint8_t *key = NULL, *val = NULL;
2882 MOVStreamContext *sc;
2884 if (c->fc->nb_streams < 1)
2886 st = c->fc->streams[c->fc->nb_streams-1];
2889 for (i = 0; i < 2; i++) {
2894 if (end - avio_tell(pb) <= 12)
2897 len = avio_rb32(pb);
2898 tag = avio_rl32(pb);
2899 avio_skip(pb, 4); // flags
2901 if (len < 12 || len - 12 > end - avio_tell(pb))
2905 if (tag == MKTAG('n', 'a', 'm', 'e'))
2907 else if (tag == MKTAG('d', 'a', 't', 'a') && len > 4) {
2914 *p = av_malloc(len + 1);
2917 ret = ffio_read_size(pb, *p, len);
2926 if (strcmp(key, "iTunSMPB") == 0) {
2927 int priming, remainder, samples;
2928 if(sscanf(val, "%*X %X %X %X", &priming, &remainder, &samples) == 3){
2929 if(priming>0 && priming<16384)
2930 sc->start_pad = priming;
2933 if (strcmp(key, "cdec") != 0) {
2934 av_dict_set(&c->fc->metadata, key, val,
2935 AV_DICT_DONT_STRDUP_KEY | AV_DICT_DONT_STRDUP_VAL);
2940 avio_seek(pb, end, SEEK_SET);
2946 static int mov_read_custom(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2948 int64_t end = avio_tell(pb) + atom.size;
2954 len = avio_rb32(pb);
2955 tag = avio_rl32(pb);
2957 if (len > atom.size)
2960 if (tag == MKTAG('m', 'e', 'a', 'n') && len > 12) {
2961 uint8_t domain[128];
2964 avio_skip(pb, 4); // flags
2967 domain_len = avio_get_str(pb, len, domain, sizeof(domain));
2968 avio_skip(pb, len - domain_len);
2969 return mov_read_custom_2plus(c, pb, end - avio_tell(pb));
2973 av_log(c->fc, AV_LOG_VERBOSE,
2974 "Unhandled or malformed custom metadata of size %"PRId64"\n", atom.size);
2978 static int mov_read_meta(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2980 while (atom.size > 8) {
2981 uint32_t tag = avio_rl32(pb);
2983 if (tag == MKTAG('h','d','l','r')) {
2984 avio_seek(pb, -8, SEEK_CUR);
2986 return mov_read_default(c, pb, atom);
2992 static int mov_read_tkhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2997 int display_matrix[3][3];
2999 MOVStreamContext *sc;
3003 if (c->fc->nb_streams < 1)
3005 st = c->fc->streams[c->fc->nb_streams-1];
3008 version = avio_r8(pb);
3009 flags = avio_rb24(pb);
3010 st->disposition |= (flags & MOV_TKHD_FLAG_ENABLED) ? AV_DISPOSITION_DEFAULT : 0;
3016 avio_rb32(pb); /* creation time */
3017 avio_rb32(pb); /* modification time */
3019 st->id = (int)avio_rb32(pb); /* track id (NOT 0 !)*/
3020 avio_rb32(pb); /* reserved */
3022 /* highlevel (considering edits) duration in movie timebase */
3023 (version == 1) ? avio_rb64(pb) : avio_rb32(pb);
3024 avio_rb32(pb); /* reserved */
3025 avio_rb32(pb); /* reserved */
3027 avio_rb16(pb); /* layer */
3028 avio_rb16(pb); /* alternate group */
3029 avio_rb16(pb); /* volume */
3030 avio_rb16(pb); /* reserved */
3032 //read in the display matrix (outlined in ISO 14496-12, Section 6.2.2)
3033 // they're kept in fixed point format through all calculations
3034 // save u,v,z to store the whole matrix in the AV_PKT_DATA_DISPLAYMATRIX
3035 // side data, but the scale factor is not needed to calculate aspect ratio
3036 for (i = 0; i < 3; i++) {
3037 display_matrix[i][0] = avio_rb32(pb); // 16.16 fixed point
3038 display_matrix[i][1] = avio_rb32(pb); // 16.16 fixed point
3039 display_matrix[i][2] = avio_rb32(pb); // 2.30 fixed point
3042 width = avio_rb32(pb); // 16.16 fixed point track width
3043 height = avio_rb32(pb); // 16.16 fixed point track height
3044 sc->width = width >> 16;
3045 sc->height = height >> 16;
3047 // save the matrix and add rotate metadata when it is not the default
3049 if (display_matrix[0][0] != (1 << 16) ||
3050 display_matrix[1][1] != (1 << 16) ||
3051 display_matrix[2][2] != (1 << 30) ||
3052 display_matrix[0][1] || display_matrix[0][2] ||
3053 display_matrix[1][0] || display_matrix[1][2] ||
3054 display_matrix[2][0] || display_matrix[2][1]) {
3058 av_freep(&sc->display_matrix);
3059 sc->display_matrix = av_malloc(sizeof(int32_t) * 9);
3060 if (!sc->display_matrix)
3061 return AVERROR(ENOMEM);
3063 for (i = 0; i < 3; i++)
3064 for (j = 0; j < 3; j++)
3065 sc->display_matrix[i * 3 + j] = display_matrix[i][j];
3067 rotate = av_display_rotation_get(sc->display_matrix);
3068 if (!isnan(rotate)) {
3069 char rotate_buf[64];
3071 if (rotate < 0) // for backward compatibility
3073 snprintf(rotate_buf, sizeof(rotate_buf), "%g", rotate);
3074 av_dict_set(&st->metadata, "rotate", rotate_buf, 0);
3078 // transform the display width/height according to the matrix
3079 // to keep the same scale, use [width height 1<<16]
3080 if (width && height && sc->display_matrix) {
3081 double disp_transform[2];
3083 #define SQR(a) ((a)*(double)(a))
3084 for (i = 0; i < 2; i++)
3085 disp_transform[i] = sqrt(SQR(display_matrix[i][0]) + SQR(display_matrix[i][1]));
3087 if (disp_transform[0] > 0 && disp_transform[1] > 0 &&
3088 disp_transform[0] < (1<<24) && disp_transform[1] < (1<<24) &&
3089 fabs((disp_transform[0] / disp_transform[1]) - 1.0) > 0.01)
3090 st->sample_aspect_ratio = av_d2q(
3091 disp_transform[0] / disp_transform[1],
3097 static int mov_read_tfhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
3099 MOVFragment *frag = &c->fragment;
3100 MOVTrackExt *trex = NULL;
3101 MOVFragmentIndex* index = NULL;
3102 int flags, track_id, i;
3104 avio_r8(pb); /* version */
3105 flags = avio_rb24(pb);
3107 track_id = avio_rb32(pb);
3109 return AVERROR_INVALIDDATA;
3110 frag->track_id = track_id;
3111 for (i = 0; i < c->trex_count; i++)
3112 if (c->trex_data[i].track_id == frag->track_id) {
3113 trex = &c->trex_data[i];
3117 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding trex\n");
3118 return AVERROR_INVALIDDATA;
3120 for (i = 0; i < c->fragment_index_count; i++) {
3121 MOVFragmentIndex* candidate = c->fragment_index_data[i];
3122 if (candidate->track_id == frag->track_id) {
3123 av_log(c->fc, AV_LOG_DEBUG,
3124 "found fragment index for track %u\n", frag->track_id);
3130 frag->base_data_offset = flags & MOV_TFHD_BASE_DATA_OFFSET ?
3131 avio_rb64(pb) : flags & MOV_TFHD_DEFAULT_BASE_IS_MOOF ?
3132 frag->moof_offset : frag->implicit_offset;
3133 frag->stsd_id = flags & MOV_TFHD_STSD_ID ? avio_rb32(pb) : trex->stsd_id;
3135 frag->duration = flags & MOV_TFHD_DEFAULT_DURATION ?
3136 avio_rb32(pb) : trex->duration;
3137 frag->size = flags & MOV_TFHD_DEFAULT_SIZE ?
3138 avio_rb32(pb) : trex->size;
3139 frag->flags = flags & MOV_TFHD_DEFAULT_FLAGS ?
3140 avio_rb32(pb) : trex->flags;
3141 frag->time = AV_NOPTS_VALUE;
3144 for (i = index->current_item; i < index->item_count; i++) {
3145 if (frag->implicit_offset == index->items[i].moof_offset) {
3146 av_log(c->fc, AV_LOG_DEBUG, "found fragment index entry "
3147 "for track %u and moof_offset %"PRId64"\n",
3148 frag->track_id, index->items[i].moof_offset);
3149 frag->time = index->items[i].time;
3150 index->current_item = i + 1;
3155 av_log(c->fc, AV_LOG_WARNING, "track %u has a fragment index "
3156 "but it doesn't have an (in-order) entry for moof_offset "
3157 "%"PRId64"\n", frag->track_id, frag->implicit_offset);
3160 av_log(c->fc, AV_LOG_TRACE, "frag flags 0x%x\n", frag->flags);
3164 static int mov_read_chap(MOVContext *c, AVIOContext *pb, MOVAtom atom)
3166 c->chapter_track = avio_rb32(pb);
3170 static int mov_read_trex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
3175 if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data))
3176 return AVERROR_INVALIDDATA;
3177 if ((err = av_reallocp_array(&c->trex_data, c->trex_count + 1,
3178 sizeof(*c->trex_data))) < 0) {
3183 c->fc->duration = AV_NOPTS_VALUE; // the duration from mvhd is not representing the whole file when fragments are used.
3185 trex = &c->trex_data[c->trex_count++];
3186 avio_r8(pb); /* version */
3187 avio_rb24(pb); /* flags */
3188 trex->track_id = avio_rb32(pb);
3189 trex->stsd_id = avio_rb32(pb);
3190 trex->duration = avio_rb32(pb);
3191 trex->size = avio_rb32(pb);
3192 trex->flags = avio_rb32(pb);
3196 static int mov_read_tfdt(MOVContext *c, AVIOContext *pb, MOVAtom atom)
3198 MOVFragment *frag = &c->fragment;
3199 AVStream *st = NULL;
3200 MOVStreamContext *sc;
3203 for (i = 0; i < c->fc->nb_streams; i++) {
3204 if (c->fc->streams[i]->id == frag->track_id) {
3205 st = c->fc->streams[i];
3210 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id);
3211 return AVERROR_INVALIDDATA;
3214 if (sc->pseudo_stream_id + 1 != frag->stsd_id)
3216 version = avio_r8(pb);
3217 avio_rb24(pb); /* flags */
3219 sc->track_end = avio_rb64(pb);
3221 sc->track_end = avio_rb32(pb);
3226 static int mov_read_trun(MOVContext *c, AVIOContext *pb, MOVAtom atom)
3228 MOVFragment *frag = &c->fragment;
3229 AVStream *st = NULL;
3230 MOVStreamContext *sc;
3234 int data_offset = 0;
3235 unsigned entries, first_sample_flags = frag->flags;
3236 int flags, distance, i, found_keyframe = 0, err;
3238 for (i = 0; i < c->fc->nb_streams; i++) {
3239 if (c->fc->streams[i]->id == frag->track_id) {
3240 st = c->fc->streams[i];
3245 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id);
3246 return AVERROR_INVALIDDATA;
3249 if (sc->pseudo_stream_id+1 != frag->stsd_id && sc->pseudo_stream_id != -1)
3251 avio_r8(pb); /* version */
3252 flags = avio_rb24(pb);
3253 entries = avio_rb32(pb);
3254 av_log(c->fc, AV_LOG_TRACE, "flags 0x%x entries %d\n", flags, entries);
3256 /* Always assume the presence of composition time offsets.
3257 * Without this assumption, for instance, we cannot deal with a track in fragmented movies that meet the following.
3258 * 1) in the initial movie, there are no samples.
3259 * 2) in the first movie fragment, there is only one sample without composition time offset.
3260 * 3) in the subsequent movie fragments, there are samples with composition time offset. */
3261 if (!sc->ctts_count && sc->sample_count)
3263 /* Complement ctts table if moov atom doesn't have ctts atom. */
3264 ctts_data = av_realloc(NULL, sizeof(*sc->ctts_data));
3266 return AVERROR(ENOMEM);
3267 sc->ctts_data = ctts_data;
3268 sc->ctts_data[sc->ctts_count].count = sc->sample_count;
3269 sc->ctts_data[sc->ctts_count].duration = 0;
3272 if ((uint64_t)entries+sc->ctts_count >= UINT_MAX/sizeof(*sc->ctts_data))
3273 return AVERROR_INVALIDDATA;
3274 if ((err = av_reallocp_array(&sc->ctts_data, entries + sc->ctts_count,
3275 sizeof(*sc->ctts_data))) < 0) {
3279 if (flags & MOV_TRUN_DATA_OFFSET) data_offset = avio_rb32(pb);
3280 if (flags & MOV_TRUN_FIRST_SAMPLE_FLAGS) first_sample_flags = avio_rb32(pb);
3281 dts = sc->track_end - sc->time_offset;
3282 offset = frag->base_data_offset + data_offset;
3284 av_log(c->fc, AV_LOG_TRACE, "first sample flags 0x%x\n", first_sample_flags);
3285 for (i = 0; i < entries && !pb->eof_reached; i++) {
3286 unsigned sample_size = frag->size;
3287 int sample_flags = i ? frag->flags : first_sample_flags;
3288 unsigned sample_duration = frag->duration;
3291 if (flags & MOV_TRUN_SAMPLE_DURATION) sample_duration = avio_rb32(pb);
3292 if (flags & MOV_TRUN_SAMPLE_SIZE) sample_size = avio_rb32(pb);
3293 if (flags & MOV_TRUN_SAMPLE_FLAGS) sample_flags = avio_rb32(pb);
3294 sc->ctts_data[sc->ctts_count].count = 1;
3295 sc->ctts_data[sc->ctts_count].duration = (flags & MOV_TRUN_SAMPLE_CTS) ?
3297 mov_update_dts_shift(sc, sc->ctts_data[sc->ctts_count].duration);
3298 if (frag->time != AV_NOPTS_VALUE) {
3299 if (c->use_mfra_for == FF_MOV_FLAG_MFRA_PTS) {
3300 int64_t pts = frag->time;
3301 av_log(c->fc, AV_LOG_DEBUG, "found frag time %"PRId64
3302 " sc->dts_shift %d ctts.duration %d"
3303 " sc->time_offset %"PRId64" flags & MOV_TRUN_SAMPLE_CTS %d\n", pts,
3304 sc->dts_shift, sc->ctts_data[sc->ctts_count].duration,
3305 sc->time_offset, flags & MOV_TRUN_SAMPLE_CTS);
3306 dts = pts - sc->dts_shift;
3307 if (flags & MOV_TRUN_SAMPLE_CTS) {
3308 dts -= sc->ctts_data[sc->ctts_count].duration;
3310 dts -= sc->time_offset;
3312 av_log(c->fc, AV_LOG_DEBUG, "calculated into dts %"PRId64"\n", dts);
3315 av_log(c->fc, AV_LOG_DEBUG, "found frag time %"PRId64
3316 ", using it for dts\n", dts);
3318 frag->time = AV_NOPTS_VALUE;
3321 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
3323 else if (!found_keyframe)
3324 keyframe = found_keyframe =
3325 !(sample_flags & (MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC |
3326 MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES));
3329 err = av_add_index_entry(st, offset, dts, sample_size, distance,
3330 keyframe ? AVINDEX_KEYFRAME : 0);
3332 av_log(c->fc, AV_LOG_ERROR, "Failed to add index entry\n");
3334 av_log(c->fc, AV_LOG_TRACE, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
3335 "size %d, distance %d, keyframe %d\n", st->index, sc->sample_count+i,
3336 offset, dts, sample_size, distance, keyframe);
3338 dts += sample_duration;
3339 offset += sample_size;
3340 sc->data_size += sample_size;
3341 sc->duration_for_fps += sample_duration;
3342 sc->nb_frames_for_fps ++;
3345 if (pb->eof_reached)
3348 frag->implicit_offset = offset;
3349 st->duration = sc->track_end = dts + sc->time_offset;
3353 /* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
3354 /* like the files created with Adobe Premiere 5.0, for samples see */
3355 /* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
3356 static int mov_read_wide(MOVContext *c, AVIOContext *pb, MOVAtom atom)
3361 return 0; /* continue */
3362 if (avio_rb32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
3363 avio_skip(pb, atom.size - 4);
3366 atom.type = avio_rl32(pb);
3368 if (atom.type != MKTAG('m','d','a','t')) {
3369 avio_skip(pb, atom.size);
3372 err = mov_read_mdat(c, pb, atom);
3376 static int mov_read_cmov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
3381 uint8_t *moov_data; /* uncompressed data */
3382 long cmov_len, moov_len;
3385 avio_rb32(pb); /* dcom atom */
3386 if (avio_rl32(pb) != MKTAG('d','c','o','m'))
3387 return AVERROR_INVALIDDATA;
3388 if (avio_rl32(pb) != MKTAG('z','l','i','b')) {
3389 av_log(c->fc, AV_LOG_ERROR, "unknown compression for cmov atom !\n");
3390 return AVERROR_INVALIDDATA;
3392 avio_rb32(pb); /* cmvd atom */
3393 if (avio_rl32(pb) != MKTAG('c','m','v','d'))
3394 return AVERROR_INVALIDDATA;
3395 moov_len = avio_rb32(pb); /* uncompressed size */
3396 cmov_len = atom.size - 6 * 4;
3398 cmov_data = av_malloc(cmov_len);
3400 return AVERROR(ENOMEM);
3401 moov_data = av_malloc(moov_len);
3404 return AVERROR(ENOMEM);
3406 ret = ffio_read_size(pb, cmov_data, cmov_len);
3408 goto free_and_return;
3410 if (uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
3411 goto free_and_return;
3412 if (ffio_init_context(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
3413 goto free_and_return;
3414 ctx.seekable = AVIO_SEEKABLE_NORMAL;
3415 atom.type = MKTAG('m','o','o','v');
3416 atom.size = moov_len;
3417 ret = mov_read_default(c, &ctx, atom);
3423 av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
3424 return AVERROR(ENOSYS);
3428 /* edit list atom */
3429 static int mov_read_elst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
3431 MOVStreamContext *sc;
3432 int i, edit_count, version;
3434 if (c->fc->nb_streams < 1 || c->ignore_editlist)
3436 sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
3438 version = avio_r8(pb); /* version */
3439 avio_rb24(pb); /* flags */
3440 edit_count = avio_rb32(pb); /* entries */
3445 av_log(c->fc, AV_LOG_WARNING, "Duplicated ELST atom\n");
3446 av_free(sc->elst_data);
3448 sc->elst_data = av_malloc_array(edit_count, sizeof(*sc->elst_data));
3450 return AVERROR(ENOMEM);
3452 av_log(c->fc, AV_LOG_TRACE, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, edit_count);
3453 for (i = 0; i < edit_count && !pb->eof_reached; i++) {
3454 MOVElst *e = &sc->elst_data[i];
3457 e->duration = avio_rb64(pb);
3458 e->time = avio_rb64(pb);
3460 e->duration = avio_rb32(pb); /* segment duration */
3461 e->time = (int32_t)avio_rb32(pb); /* media time */
3463 e->rate = avio_rb32(pb) / 65536.0;
3464 av_log(c->fc, AV_LOG_TRACE, "duration=%"PRId64" time=%"PRId64" rate=%f\n",
3465 e->duration, e->time, e->rate);
3472 static int mov_read_tmcd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
3474 MOVStreamContext *sc;
3476 if (c->fc->nb_streams < 1)
3477 return AVERROR_INVALIDDATA;
3478 sc = c->fc->streams[c->fc->nb_streams - 1]->priv_data;
3479 sc->timecode_track = avio_rb32(pb);
3483 static int mov_read_uuid(MOVContext *c, AVIOContext *pb, MOVAtom atom)
3487 static const uint8_t uuid_isml_manifest[] = {
3488 0xa5, 0xd4, 0x0b, 0x30, 0xe8, 0x14, 0x11, 0xdd,
3489 0xba, 0x2f, 0x08, 0x00, 0x20, 0x0c, 0x9a, 0x66
3492 if (atom.size < sizeof(uuid) || atom.size == INT64_MAX)
3493 return AVERROR_INVALIDDATA;
3495 ret = avio_read(pb, uuid, sizeof(uuid));
3498 } else if (ret != sizeof(uuid)) {
3499 return AVERROR_INVALIDDATA;
3501 if (!memcmp(uuid, uuid_isml_manifest, sizeof(uuid))) {
3502 uint8_t *buffer, *ptr;
3504 size_t len = atom.size - sizeof(uuid);
3507 return AVERROR_INVALIDDATA;
3509 ret = avio_skip(pb, 4); // zeroes
3512 buffer = av_mallocz(len + 1);
3514 return AVERROR(ENOMEM);
3516 ret = avio_read(pb, buffer, len);
3520 } else if (ret != len) {
3522 return AVERROR_INVALIDDATA;
3526 while ((ptr = av_stristr(ptr, "systemBitrate=\""))) {
3527 ptr += sizeof("systemBitrate=\"") - 1;
3528 c->bitrates_count++;
3529 c->bitrates = av_realloc_f(c->bitrates, c->bitrates_count, sizeof(*c->bitrates));
3531 c->bitrates_count = 0;
3533 return AVERROR(ENOMEM);
3536 ret = strtol(ptr, &endptr, 10);
3537 if (ret < 0 || errno || *endptr != '"') {
3538 c->bitrates[c->bitrates_count - 1] = 0;
3540 c->bitrates[c->bitrates_count - 1] = ret;
3549 static int mov_read_free(MOVContext *c, AVIOContext *pb, MOVAtom atom)
3552 uint8_t content[16];
3557 ret = avio_read(pb, content, FFMIN(sizeof(content), atom.size));
3563 && !memcmp(content, "Anevia\x1A\x1A", 8)
3564 && c->use_mfra_for == FF_MOV_FLAG_MFRA_AUTO) {
3565 c->use_mfra_for = FF_MOV_FLAG_MFRA_PTS;
3571 static const MOVParseTableEntry mov_default_parse_table[] = {
3572 { MKTAG('A','C','L','R'), mov_read_aclr },
3573 { MKTAG('A','P','R','G'), mov_read_avid },
3574 { MKTAG('A','A','L','P'), mov_read_avid },
3575 { MKTAG('A','R','E','S'), mov_read_ares },
3576 { MKTAG('a','v','s','s'), mov_read_avss },
3577 { MKTAG('c','h','p','l'), mov_read_chpl },
3578 { MKTAG('c','o','6','4'), mov_read_stco },
3579 { MKTAG('c','o','l','r'), mov_read_colr },
3580 { MKTAG('c','t','t','s'), mov_read_ctts }, /* composition time to sample */
3581 { MKTAG('d','i','n','f'), mov_read_default },
3582 { MKTAG('D','p','x','E'), mov_read_dpxe },
3583 { MKTAG('d','r','e','f'), mov_read_dref },
3584 { MKTAG('e','d','t','s'), mov_read_default },
3585 { MKTAG('e','l','s','t'), mov_read_elst },
3586 { MKTAG('e','n','d','a'), mov_read_enda },
3587 { MKTAG('f','i','e','l'), mov_read_fiel },
3588 { MKTAG('f','t','y','p'), mov_read_ftyp },
3589 { MKTAG('g','l','b','l'), mov_read_glbl },
3590 { MKTAG('h','d','l','r'), mov_read_hdlr },
3591 { MKTAG('i','l','s','t'), mov_read_ilst },
3592 { MKTAG('j','p','2','h'), mov_read_jp2h },
3593 { MKTAG('m','d','a','t'), mov_read_mdat },
3594 { MKTAG('m','d','h','d'), mov_read_mdhd },
3595 { MKTAG('m','d','i','a'), mov_read_default },
3596 { MKTAG('m','e','t','a'), mov_read_meta },
3597 { MKTAG('m','i','n','f'), mov_read_default },
3598 { MKTAG('m','o','o','f'), mov_read_moof },
3599 { MKTAG('m','o','o','v'), mov_read_moov },
3600 { MKTAG('m','v','e','x'), mov_read_default },
3601 { MKTAG('m','v','h','d'), mov_read_mvhd },
3602 { MKTAG('S','M','I',' '), mov_read_svq3 },
3603 { MKTAG('a','l','a','c'), mov_read_alac }, /* alac specific atom */
3604 { MKTAG('a','v','c','C'), mov_read_glbl },
3605 { MKTAG('p','a','s','p'), mov_read_pasp },
3606 { MKTAG('s','t','b','l'), mov_read_default },
3607 { MKTAG('s','t','c','o'), mov_read_stco },
3608 { MKTAG('s','t','p','s'), mov_read_stps },
3609 { MKTAG('s','t','r','f'), mov_read_strf },
3610 { MKTAG('s','t','s','c'), mov_read_stsc },
3611 { MKTAG('s','t','s','d'), mov_read_stsd }, /* sample description */
3612 { MKTAG('s','t','s','s'), mov_read_stss }, /* sync sample */
3613 { MKTAG('s','t','s','z'), mov_read_stsz }, /* sample size */
3614 { MKTAG('s','t','t','s'), mov_read_stts },
3615 { MKTAG('s','t','z','2'), mov_read_stsz }, /* compact sample size */
3616 { MKTAG('t','k','h','d'), mov_read_tkhd }, /* track header */
3617 { MKTAG('t','f','d','t'), mov_read_tfdt },
3618 { MKTAG('t','f','h','d'), mov_read_tfhd }, /* track fragment header */
3619 { MKTAG('t','r','a','k'), mov_read_trak },
3620 { MKTAG('t','r','a','f'), mov_read_default },
3621 { MKTAG('t','r','e','f'), mov_read_default },
3622 { MKTAG('t','m','c','d'), mov_read_tmcd },
3623 { MKTAG('c','h','a','p'), mov_read_chap },
3624 { MKTAG('t','r','e','x'), mov_read_trex },
3625 { MKTAG('t','r','u','n'), mov_read_trun },
3626 { MKTAG('u','d','t','a'), mov_read_default },
3627 { MKTAG('w','a','v','e'), mov_read_wave },
3628 { MKTAG('e','s','d','s'), mov_read_esds },
3629 { MKTAG('d','a','c','3'), mov_read_dac3 }, /* AC-3 info */
3630 { MKTAG('d','e','c','3'), mov_read_dec3 }, /* EAC-3 info */
3631 { MKTAG('w','i','d','e'), mov_read_wide }, /* place holder */
3632 { MKTAG('w','f','e','x'), mov_read_wfex },
3633 { MKTAG('c','m','o','v'), mov_read_cmov },
3634 { MKTAG('c','h','a','n'), mov_read_chan }, /* channel layout */
3635 { MKTAG('d','v','c','1'), mov_read_dvc1 },
3636 { MKTAG('s','b','g','p'), mov_read_sbgp },
3637 { MKTAG('h','v','c','C'), mov_read_glbl },
3638 { MKTAG('u','u','i','d'), mov_read_uuid },
3639 { MKTAG('C','i','n', 0x8e), mov_read_targa_y216 },
3640 { MKTAG('f','r','e','e'), mov_read_free },
3641 { MKTAG('-','-','-','-'), mov_read_custom },
3645 static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom)
3647 int64_t total_size = 0;
3651 if (c->atom_depth > 10) {
3652 av_log(c->fc, AV_LOG_ERROR, "Atoms too deeply nested\n");
3653 return AVERROR_INVALIDDATA;
3658 atom.size = INT64_MAX;
3659 while (total_size + 8 <= atom.size && !avio_feof(pb)) {
3660 int (*parse)(MOVContext*, AVIOContext*, MOVAtom) = NULL;
3663 if (atom.size >= 8) {
3664 a.size = avio_rb32(pb);
3665 a.type = avio_rl32(pb);
3666 if (a.type == MKTAG('f','r','e','e') &&
3670 uint32_t *type = (uint32_t *)buf + 1;
3671 if (avio_read(pb, buf, 8) != 8)
3672 return AVERROR_INVALIDDATA;
3673 avio_seek(pb, -8, SEEK_CUR);
3674 if (*type == MKTAG('m','v','h','d') ||
3675 *type == MKTAG('c','m','o','v')) {
3676 av_log(c->fc, AV_LOG_ERROR, "Detected moov in a free atom.\n");
3677 a.type = MKTAG('m','o','o','v');
3680 if (atom.type != MKTAG('r','o','o','t') &&
3681 atom.type != MKTAG('m','o','o','v'))
3683 if (a.type == MKTAG('t','r','a','k') || a.type == MKTAG('m','d','a','t'))
3685 av_log(c->fc, AV_LOG_ERROR, "Broken file, trak/mdat not at top-level\n");
3692 if (a.size == 1 && total_size + 8 <= atom.size) { /* 64 bit extended size */
3693 a.size = avio_rb64(pb) - 8;
3697 av_log(c->fc, AV_LOG_TRACE, "type: %08x '%.4s' parent:'%.4s' sz: %"PRId64" %"PRId64" %"PRId64"\n",
3698 a.type, (char*)&a.type, (char*)&atom.type, a.size, total_size, atom.size);
3700 a.size = atom.size - total_size + 8;
3705 a.size = FFMIN(a.size, atom.size - total_size);
3707 for (i = 0; mov_default_parse_table[i].type; i++)
3708 if (mov_default_parse_table[i].type == a.type) {
3709 parse = mov_default_parse_table[i].parse;
3713 // container is user data
3714 if (!parse && (atom.type == MKTAG('u','d','t','a') ||
3715 atom.type == MKTAG('i','l','s','t')))
3716 parse = mov_read_udta_string;
3718 if (!parse) { /* skip leaf atoms data */
3719 avio_skip(pb, a.size);
3721 int64_t start_pos = avio_tell(pb);
3723 int err = parse(c, pb, a);
3728 if (c->found_moov && c->found_mdat &&
3729 ((!pb->seekable || c->fc->flags & AVFMT_FLAG_IGNIDX) ||
3730 start_pos + a.size == avio_size(pb))) {
3731 if (!pb->seekable || c->fc->flags & AVFMT_FLAG_IGNIDX)
3732 c->next_root_atom = start_pos + a.size;
3736 left = a.size - avio_tell(pb) + start_pos;
3737 if (left > 0) /* skip garbage at atom end */
3738 avio_skip(pb, left);
3739 else if (left < 0) {
3740 av_log(c->fc, AV_LOG_WARNING,
3741 "overread end of atom '%.4s' by %"PRId64" bytes\n",
3742 (char*)&a.type, -left);
3743 avio_seek(pb, left, SEEK_CUR);
3747 total_size += a.size;
3750 if (total_size < atom.size && atom.size < 0x7ffff)
3751 avio_skip(pb, atom.size - total_size);
3757 static int mov_probe(AVProbeData *p)
3762 int moov_offset = -1;
3764 /* check file header */
3767 /* ignore invalid offset */
3768 if ((offset + 8) > (unsigned int)p->buf_size)
3770 tag = AV_RL32(p->buf + offset + 4);
3772 /* check for obvious tags */
3773 case MKTAG('m','o','o','v'):
3774 moov_offset = offset + 4;
3775 case MKTAG('m','d','a','t'):
3776 case MKTAG('p','n','o','t'): /* detect movs with preview pics like ew.mov and april.mov */
3777 case MKTAG('u','d','t','a'): /* Packet Video PVAuthor adds this and a lot of more junk */
3778 case MKTAG('f','t','y','p'):
3779 if (AV_RB32(p->buf+offset) < 8 &&
3780 (AV_RB32(p->buf+offset) != 1 ||
3781 offset + 12 > (unsigned int)p->buf_size ||
3782 AV_RB64(p->buf+offset + 8) == 0)) {
3783 score = FFMAX(score, AVPROBE_SCORE_EXTENSION);
3784 } else if (tag == MKTAG('f','t','y','p') &&
3785 ( AV_RL32(p->buf + offset + 8) == MKTAG('j','p','2',' ')
3786 || AV_RL32(p->buf + offset + 8) == MKTAG('j','p','x',' ')
3788 score = FFMAX(score, 5);
3790 score = AVPROBE_SCORE_MAX;
3792 offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset;
3794 /* those are more common words, so rate then a bit less */
3795 case MKTAG('e','d','i','w'): /* xdcam files have reverted first tags */
3796 case MKTAG('w','i','d','e'):
3797 case MKTAG('f','r','e','e'):
3798 case MKTAG('j','u','n','k'):
3799 case MKTAG('p','i','c','t'):
3800 score = FFMAX(score, AVPROBE_SCORE_MAX - 5);
3801 offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset;
3803 case MKTAG(0x82,0x82,0x7f,0x7d):
3804 case MKTAG('s','k','i','p'):
3805 case MKTAG('u','u','i','d'):
3806 case MKTAG('p','r','f','l'):
3807 /* if we only find those cause probedata is too small at least rate them */
3808 score = FFMAX(score, AVPROBE_SCORE_EXTENSION);
3809 offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset;
3812 offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset;
3815 if(score > AVPROBE_SCORE_MAX - 50 && moov_offset != -1) {
3816 /* moov atom in the header - we should make sure that this is not a
3817 * MOV-packed MPEG-PS */
3818 offset = moov_offset;
3820 while(offset < (p->buf_size - 16)){ /* Sufficient space */
3821 /* We found an actual hdlr atom */
3822 if(AV_RL32(p->buf + offset ) == MKTAG('h','d','l','r') &&
3823 AV_RL32(p->buf + offset + 8) == MKTAG('m','h','l','r') &&
3824 AV_RL32(p->buf + offset + 12) == MKTAG('M','P','E','G')){
3825 av_log(NULL, AV_LOG_WARNING, "Found media data tag MPEG indicating this is a MOV-packed MPEG-PS.\n");
3826 /* We found a media handler reference atom describing an
3827 * MPEG-PS-in-MOV, return a
3828 * low score to force expanding the probe window until
3829 * mpegps_probe finds what it needs */
3840 // must be done after parsing all trak because there's no order requirement
3841 static void mov_read_chapters(AVFormatContext *s)
3843 MOVContext *mov = s->priv_data;
3844 AVStream *st = NULL;
3845 MOVStreamContext *sc;
3849 for (i = 0; i < s->nb_streams; i++)
3850 if (s->streams[i]->id == mov->chapter_track) {
3855 av_log(s, AV_LOG_ERROR, "Referenced QT chapter track not found\n");
3859 st->discard = AVDISCARD_ALL;
3861 cur_pos = avio_tell(sc->pb);
3863 for (i = 0; i < st->nb_index_entries; i++) {
3864 AVIndexEntry *sample = &st->index_entries[i];
3865 int64_t end = i+1 < st->nb_index_entries ? st->index_entries[i+1].timestamp : st->duration;
3870 if (end < sample->timestamp) {
3871 av_log(s, AV_LOG_WARNING, "ignoring stream duration which is shorter than chapters\n");
3872 end = AV_NOPTS_VALUE;
3875 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
3876 av_log(s, AV_LOG_ERROR, "Chapter %d not found in file\n", i);
3880 // the first two bytes are the length of the title
3881 len = avio_rb16(sc->pb);
3882 if (len > sample->size-2)
3884 title_len = 2*len + 1;
3885 if (!(title = av_mallocz(title_len)))
3888 // The samples could theoretically be in any encoding if there's an encd
3889 // atom following, but in practice are only utf-8 or utf-16, distinguished
3890 // instead by the presence of a BOM
3894 ch = avio_rb16(sc->pb);
3896 avio_get_str16be(sc->pb, len, title, title_len);
3897 else if (ch == 0xfffe)
3898 avio_get_str16le(sc->pb, len, title, title_len);
3901 if (len == 1 || len == 2)
3904 avio_get_str(sc->pb, INT_MAX, title + 2, len - 1);
3908 avpriv_new_chapter(s, i, st->time_base, sample->timestamp, end, title);
3912 avio_seek(sc->pb, cur_pos, SEEK_SET);
3915 static int parse_timecode_in_framenum_format(AVFormatContext *s, AVStream *st,
3916 uint32_t value, int flags)
3919 char buf[AV_TIMECODE_STR_SIZE];
3920 AVRational rate = {st->codec->time_base.den,
3921 st->codec->time_base.num};
3922 int ret = av_timecode_init(&tc, rate, flags, 0, s);
3925 av_dict_set(&st->metadata, "timecode",
3926 av_timecode_make_string(&tc, buf, value), 0);
3930 static int mov_read_timecode_track(AVFormatContext *s, AVStream *st)
3932 MOVStreamContext *sc = st->priv_data;
3934 int64_t cur_pos = avio_tell(sc->pb);
3937 if (!st->nb_index_entries)
3940 avio_seek(sc->pb, st->index_entries->pos, SEEK_SET);
3941 value = avio_rb32(s->pb);
3943 if (sc->tmcd_flags & 0x0001) flags |= AV_TIMECODE_FLAG_DROPFRAME;
3944 if (sc->tmcd_flags & 0x0002) flags |= AV_TIMECODE_FLAG_24HOURSMAX;
3945 if (sc->tmcd_flags & 0x0004) flags |= AV_TIMECODE_FLAG_ALLOWNEGATIVE;
3947 /* Assume Counter flag is set to 1 in tmcd track (even though it is likely
3948 * not the case) and thus assume "frame number format" instead of QT one.
3949 * No sample with tmcd track can be found with a QT timecode at the moment,
3950 * despite what the tmcd track "suggests" (Counter flag set to 0 means QT
3952 parse_timecode_in_framenum_format(s, st, value, flags);
3954 avio_seek(sc->pb, cur_pos, SEEK_SET);
3958 static int mov_read_close(AVFormatContext *s)
3960 MOVContext *mov = s->priv_data;
3963 for (i = 0; i < s->nb_streams; i++) {
3964 AVStream *st = s->streams[i];
3965 MOVStreamContext *sc = st->priv_data;
3967 av_freep(&sc->ctts_data);
3968 for (j = 0; j < sc->drefs_count; j++) {
3969 av_freep(&sc->drefs[j].path);
3970 av_freep(&sc->drefs[j].dir);
3972 av_freep(&sc->drefs);
3974 sc->drefs_count = 0;
3976 if (!sc->pb_is_copied)
3977 avio_closep(&sc->pb);
3980 av_freep(&sc->chunk_offsets);
3981 av_freep(&sc->stsc_data);
3982 av_freep(&sc->sample_sizes);
3983 av_freep(&sc->keyframes);
3984 av_freep(&sc->stts_data);
3985 av_freep(&sc->stps_data);
3986 av_freep(&sc->elst_data);
3987 av_freep(&sc->rap_group);
3988 av_freep(&sc->display_matrix);
3991 if (mov->dv_demux) {
3992 avformat_free_context(mov->dv_fctx);
3993 mov->dv_fctx = NULL;
3996 av_freep(&mov->trex_data);
3997 av_freep(&mov->bitrates);
3999 for (i = 0; i < mov->fragment_index_count; i++) {
4000 MOVFragmentIndex* index = mov->fragment_index_data[i];
4001 av_freep(&index->items);
4002 av_freep(&mov->fragment_index_data[i]);
4004 av_freep(&mov->fragment_index_data);
4009 static int tmcd_is_referenced(AVFormatContext *s, int tmcd_id)
4013 for (i = 0; i < s->nb_streams; i++) {
4014 AVStream *st = s->streams[i];
4015 MOVStreamContext *sc = st->priv_data;
4017 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
4018 sc->timecode_track == tmcd_id)
4024 /* look for a tmcd track not referenced by any video track, and export it globally */
4025 static void export_orphan_timecode(AVFormatContext *s)
4029 for (i = 0; i < s->nb_streams; i++) {
4030 AVStream *st = s->streams[i];
4032 if (st->codec->codec_tag == MKTAG('t','m','c','d') &&
4033 !tmcd_is_referenced(s, i + 1)) {
4034 AVDictionaryEntry *tcr = av_dict_get(st->metadata, "timecode", NULL, 0);
4036 av_dict_set(&s->metadata, "timecode", tcr->value, 0);
4043 static int read_tfra(MOVContext *mov, AVIOContext *f)
4045 MOVFragmentIndex* index = NULL;
4046 int version, fieldlength, i, j;
4047 int64_t pos = avio_tell(f);
4048 uint32_t size = avio_rb32(f);
4051 if (avio_rb32(f) != MKBETAG('t', 'f', 'r', 'a')) {
4054 av_log(mov->fc, AV_LOG_VERBOSE, "found tfra\n");
4055 index = av_mallocz(sizeof(MOVFragmentIndex));
4057 return AVERROR(ENOMEM);
4060 tmp = av_realloc_array(mov->fragment_index_data,
4061 mov->fragment_index_count + 1,
4062 sizeof(MOVFragmentIndex*));
4065 return AVERROR(ENOMEM);
4067 mov->fragment_index_data = tmp;
4068 mov->fragment_index_data[mov->fragment_index_count++] = index;
4070 version = avio_r8(f);
4072 index->track_id = avio_rb32(f);
4073 fieldlength = avio_rb32(f);
4074 index->item_count = avio_rb32(f);
4075 index->items = av_mallocz_array(
4076 index->item_count, sizeof(MOVFragmentIndexItem));
4077 if (!index->items) {
4078 index->item_count = 0;
4079 return AVERROR(ENOMEM);
4081 for (i = 0; i < index->item_count; i++) {
4082 int64_t time, offset;
4084 time = avio_rb64(f);
4085 offset = avio_rb64(f);
4087 time = avio_rb32(f);
4088 offset = avio_rb32(f);
4090 index->items[i].time = time;
4091 index->items[i].moof_offset = offset;
4092 for (j = 0; j < ((fieldlength >> 4) & 3) + 1; j++)
4094 for (j = 0; j < ((fieldlength >> 2) & 3) + 1; j++)
4096 for (j = 0; j < ((fieldlength >> 0) & 3) + 1; j++)
4100 avio_seek(f, pos + size, SEEK_SET);
4104 static int mov_read_mfra(MOVContext *c, AVIOContext *f)
4106 int64_t stream_size = avio_size(f);
4107 int64_t original_pos = avio_tell(f);
4111 if ((seek_ret = avio_seek(f, stream_size - 4, SEEK_SET)) < 0) {
4115 mfra_size = avio_rb32(f);
4116 if (mfra_size < 0 || mfra_size > stream_size) {
4117 av_log(c->fc, AV_LOG_DEBUG, "doesn't look like mfra (unreasonable size)\n");
4120 if ((seek_ret = avio_seek(f, -mfra_size, SEEK_CUR)) < 0) {
4124 if (avio_rb32(f) != mfra_size) {
4125 av_log(c->fc, AV_LOG_DEBUG, "doesn't look like mfra (size mismatch)\n");
4128 if (avio_rb32(f) != MKBETAG('m', 'f', 'r', 'a')) {
4129 av_log(c->fc, AV_LOG_DEBUG, "doesn't look like mfra (tag mismatch)\n");
4132 av_log(c->fc, AV_LOG_VERBOSE, "stream has mfra\n");
4134 ret = read_tfra(c, f);
4140 seek_ret = avio_seek(f, original_pos, SEEK_SET);
4142 av_log(c->fc, AV_LOG_ERROR,
4143 "failed to seek back after looking for mfra\n");
4149 static int mov_read_header(AVFormatContext *s)
4151 MOVContext *mov = s->priv_data;
4152 AVIOContext *pb = s->pb;
4154 MOVAtom atom = { AV_RL32("root") };
4158 /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
4160 atom.size = avio_size(pb);
4162 atom.size = INT64_MAX;
4164 /* check MOV header */
4166 if (mov->moov_retry)
4167 avio_seek(pb, 0, SEEK_SET);
4168 if ((err = mov_read_default(mov, pb, atom)) < 0) {
4169 av_log(s, AV_LOG_ERROR, "error reading header\n");
4173 } while (pb->seekable && !mov->found_moov && !mov->moov_retry++);
4174 if (!mov->found_moov) {
4175 av_log(s, AV_LOG_ERROR, "moov atom not found\n");
4177 return AVERROR_INVALIDDATA;
4179 av_log(mov->fc, AV_LOG_TRACE, "on_parse_exit_offset=%"PRId64"\n", avio_tell(pb));
4182 if (mov->chapter_track > 0)
4183 mov_read_chapters(s);
4184 for (i = 0; i < s->nb_streams; i++)
4185 if (s->streams[i]->codec->codec_tag == AV_RL32("tmcd"))
4186 mov_read_timecode_track(s, s->streams[i]);
4189 /* copy timecode metadata from tmcd tracks to the related video streams */
4190 for (i = 0; i < s->nb_streams; i++) {
4191 AVStream *st = s->streams[i];
4192 MOVStreamContext *sc = st->priv_data;
4193 if (sc->timecode_track > 0) {
4194 AVDictionaryEntry *tcr;
4195 int tmcd_st_id = -1;
4197 for (j = 0; j < s->nb_streams; j++)
4198 if (s->streams[j]->id == sc->timecode_track)
4201 if (tmcd_st_id < 0 || tmcd_st_id == i)
4203 tcr = av_dict_get(s->streams[tmcd_st_id]->metadata, "timecode", NULL, 0);
4205 av_dict_set(&st->metadata, "timecode", tcr->value, 0);
4208 export_orphan_timecode(s);
4210 for (i = 0; i < s->nb_streams; i++) {
4211 AVStream *st = s->streams[i];
4212 MOVStreamContext *sc = st->priv_data;
4213 fix_timescale(mov, sc);
4214 if(st->codec->codec_type == AVMEDIA_TYPE_AUDIO && st->codec->codec_id == AV_CODEC_ID_AAC) {
4215 st->skip_samples = sc->start_pad;
4217 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && sc->nb_frames_for_fps > 0 && sc->duration_for_fps > 0)
4218 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
4219 sc->time_scale*(int64_t)sc->nb_frames_for_fps, sc->duration_for_fps, INT_MAX);
4220 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
4221 if (st->codec->width <= 0 || st->codec->height <= 0) {
4222 st->codec->width = sc->width;
4223 st->codec->height = sc->height;
4225 if (st->codec->codec_id == AV_CODEC_ID_DVD_SUBTITLE) {
4226 if ((err = mov_rewrite_dvd_sub_extradata(st)) < 0)
4232 if (mov->trex_data) {
4233 for (i = 0; i < s->nb_streams; i++) {
4234 AVStream *st = s->streams[i];
4235 MOVStreamContext *sc = st->priv_data;
4236 if (st->duration > 0)
4237 st->codec->bit_rate = sc->data_size * 8 * sc->time_scale / st->duration;
4241 if (mov->use_mfra_for > 0) {
4242 for (i = 0; i < s->nb_streams; i++) {
4243 AVStream *st = s->streams[i];
4244 MOVStreamContext *sc = st->priv_data;
4245 if (sc->duration_for_fps > 0) {
4246 st->codec->bit_rate = sc->data_size * 8 * sc->time_scale /
4247 sc->duration_for_fps;
4252 for (i = 0; i < mov->bitrates_count && i < s->nb_streams; i++) {
4253 if (mov->bitrates[i]) {
4254 s->streams[i]->codec->bit_rate = mov->bitrates[i];
4258 ff_rfps_calculate(s);
4260 for (i = 0; i < s->nb_streams; i++) {
4261 AVStream *st = s->streams[i];
4262 MOVStreamContext *sc = st->priv_data;
4264 switch (st->codec->codec_type) {
4265 case AVMEDIA_TYPE_AUDIO:
4266 err = ff_replaygain_export(st, s->metadata);
4272 case AVMEDIA_TYPE_VIDEO:
4273 if (sc->display_matrix) {
4274 AVPacketSideData *sd, *tmp;
4276 tmp = av_realloc_array(st->side_data,
4277 st->nb_side_data + 1, sizeof(*tmp));
4279 return AVERROR(ENOMEM);
4281 st->side_data = tmp;
4284 sd = &st->side_data[st->nb_side_data - 1];
4285 sd->type = AV_PKT_DATA_DISPLAYMATRIX;
4286 sd->size = sizeof(int32_t) * 9;
4287 sd->data = (uint8_t*)sc->display_matrix;
4288 sc->display_matrix = NULL;
4297 static AVIndexEntry *mov_find_next_sample(AVFormatContext *s, AVStream **st)
4299 AVIndexEntry *sample = NULL;
4300 int64_t best_dts = INT64_MAX;
4302 for (i = 0; i < s->nb_streams; i++) {
4303 AVStream *avst = s->streams[i];
4304 MOVStreamContext *msc = avst->priv_data;
4305 if (msc->pb && msc->current_sample < avst->nb_index_entries) {
4306 AVIndexEntry *current_sample = &avst->index_entries[msc->current_sample];
4307 int64_t dts = av_rescale(current_sample->timestamp, AV_TIME_BASE, msc->time_scale);
4308 av_log(s, AV_LOG_TRACE, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
4309 if (!sample || (!s->pb->seekable && current_sample->pos < sample->pos) ||
4311 ((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb &&
4312 ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
4313 (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) {
4314 sample = current_sample;
4323 static int should_retry(AVIOContext *pb, int error_code) {
4324 if (error_code == AVERROR_EOF || avio_feof(pb))
4330 static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
4332 MOVContext *mov = s->priv_data;
4333 MOVStreamContext *sc;
4334 AVIndexEntry *sample;
4335 AVStream *st = NULL;
4339 sample = mov_find_next_sample(s, &st);
4341 mov->found_mdat = 0;
4342 if (!mov->next_root_atom)
4344 if (avio_seek(s->pb, mov->next_root_atom, SEEK_SET) != mov->next_root_atom) {
4345 av_log(mov->fc, AV_LOG_ERROR, "next root atom offset 0x%"PRIx64": partial file\n", mov->next_root_atom);
4346 return AVERROR_INVALIDDATA;
4348 mov->next_root_atom = 0;
4349 if (mov_read_default(mov, s->pb, (MOVAtom){ AV_RL32("root"), INT64_MAX }) < 0 ||
4352 av_log(s, AV_LOG_TRACE, "read fragments, offset 0x%"PRIx64"\n", avio_tell(s->pb));
4356 /* must be done just before reading, to avoid infinite loop on sample */
4357 sc->current_sample++;
4359 if (mov->next_root_atom) {
4360 sample->pos = FFMIN(sample->pos, mov->next_root_atom);
4361 sample->size = FFMIN(sample->size, (mov->next_root_atom - sample->pos));
4364 if (st->discard != AVDISCARD_ALL) {
4365 int64_t ret64 = avio_seek(sc->pb, sample->pos, SEEK_SET);
4366 if (ret64 != sample->pos) {
4367 av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
4368 sc->ffindex, sample->pos);
4369 sc->current_sample -= should_retry(sc->pb, ret64);
4370 return AVERROR_INVALIDDATA;
4372 ret = av_get_packet(sc->pb, pkt, sample->size);
4374 sc->current_sample -= should_retry(sc->pb, ret);
4377 if (sc->has_palette) {
4380 pal = av_packet_new_side_data(pkt, AV_PKT_DATA_PALETTE, AVPALETTE_SIZE);
4382 av_log(mov->fc, AV_LOG_ERROR, "Cannot append palette to packet\n");
4384 memcpy(pal, sc->palette, AVPALETTE_SIZE);
4385 sc->has_palette = 0;
4388 #if CONFIG_DV_DEMUXER
4389 if (mov->dv_demux && sc->dv_audio_container) {
4390 avpriv_dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size, pkt->pos);
4391 av_freep(&pkt->data);
4393 ret = avpriv_dv_get_packet(mov->dv_demux, pkt);
4400 pkt->stream_index = sc->ffindex;
4401 pkt->dts = sample->timestamp;
4402 if (sc->ctts_data && sc->ctts_index < sc->ctts_count) {
4403 pkt->pts = pkt->dts + sc->dts_shift + sc->ctts_data[sc->ctts_index].duration;
4404 /* update ctts context */
4406 if (sc->ctts_index < sc->ctts_count &&
4407 sc->ctts_data[sc->ctts_index].count == sc->ctts_sample) {
4409 sc->ctts_sample = 0;
4412 pkt->dts = AV_NOPTS_VALUE;
4414 int64_t next_dts = (sc->current_sample < st->nb_index_entries) ?
4415 st->index_entries[sc->current_sample].timestamp : st->duration;
4416 pkt->duration = next_dts - pkt->dts;
4417 pkt->pts = pkt->dts;
4419 if (st->discard == AVDISCARD_ALL)
4421 pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? AV_PKT_FLAG_KEY : 0;
4422 pkt->pos = sample->pos;
4427 static int mov_seek_stream(AVFormatContext *s, AVStream *st, int64_t timestamp, int flags)
4429 MOVStreamContext *sc = st->priv_data;
4430 int sample, time_sample;
4433 sample = av_index_search_timestamp(st, timestamp, flags);
4434 av_log(s, AV_LOG_TRACE, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
4435 if (sample < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
4437 if (sample < 0) /* not sure what to do */
4438 return AVERROR_INVALIDDATA;
4439 sc->current_sample = sample;
4440 av_log(s, AV_LOG_TRACE, "stream %d, found sample %d\n", st->index, sc->current_sample);
4441 /* adjust ctts index */
4442 if (sc->ctts_data) {
4444 for (i = 0; i < sc->ctts_count; i++) {
4445 int next = time_sample + sc->ctts_data[i].count;
4446 if (next > sc->current_sample) {
4448 sc->ctts_sample = sc->current_sample - time_sample;
4457 static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
4459 MOVContext *mc = s->priv_data;
4464 if (stream_index >= s->nb_streams)
4465 return AVERROR_INVALIDDATA;
4467 st = s->streams[stream_index];
4468 sample = mov_seek_stream(s, st, sample_time, flags);
4472 if (mc->seek_individually) {
4473 /* adjust seek timestamp to found sample timestamp */
4474 int64_t seek_timestamp = st->index_entries[sample].timestamp;
4476 for (i = 0; i < s->nb_streams; i++) {
4478 MOVStreamContext *sc = s->streams[i]->priv_data;
4480 st->skip_samples = (sample_time <= 0) ? sc->start_pad : 0;
4482 if (stream_index == i)
4485 timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
4486 mov_seek_stream(s, st, timestamp, flags);
4489 for (i = 0; i < s->nb_streams; i++) {
4490 MOVStreamContext *sc;
4493 sc->current_sample = 0;
4496 MOVStreamContext *sc;
4497 AVIndexEntry *entry = mov_find_next_sample(s, &st);
4499 return AVERROR_INVALIDDATA;
4501 if (sc->ffindex == stream_index && sc->current_sample == sample)
4503 sc->current_sample++;
4509 #define OFFSET(x) offsetof(MOVContext, x)
4510 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
4511 static const AVOption mov_options[] = {
4512 {"use_absolute_path",
4513 "allow using absolute path when opening alias, this is a possible security issue",
4514 OFFSET(use_absolute_path), FF_OPT_TYPE_INT, {.i64 = 0},
4516 {"seek_streams_individually",
4517 "Seek each stream individually to the to the closest point",
4518 OFFSET(seek_individually), AV_OPT_TYPE_INT, { .i64 = 1 },
4520 {"ignore_editlist", "", OFFSET(ignore_editlist), FF_OPT_TYPE_INT, {.i64 = 0},
4523 "use mfra for fragment timestamps",
4524 OFFSET(use_mfra_for), FF_OPT_TYPE_INT, {.i64 = FF_MOV_FLAG_MFRA_AUTO},
4525 -1, FF_MOV_FLAG_MFRA_PTS, FLAGS,
4527 {"auto", "auto", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_MFRA_AUTO}, 0, 0,
4528 FLAGS, "use_mfra_for" },
4529 {"dts", "dts", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_MFRA_DTS}, 0, 0,
4530 FLAGS, "use_mfra_for" },
4531 {"pts", "pts", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_MFRA_PTS}, 0, 0,
4532 FLAGS, "use_mfra_for" },
4533 { "export_all", "Export unrecognized metadata entries", OFFSET(export_all),
4534 AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, .flags = FLAGS },
4535 { "export_xmp", "Export full XMP metadata", OFFSET(export_xmp),
4536 AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, .flags = FLAGS },
4540 static const AVClass mov_class = {
4541 .class_name = "mov,mp4,m4a,3gp,3g2,mj2",
4542 .item_name = av_default_item_name,
4543 .option = mov_options,
4544 .version = LIBAVUTIL_VERSION_INT,
4547 AVInputFormat ff_mov_demuxer = {
4548 .name = "mov,mp4,m4a,3gp,3g2,mj2",
4549 .long_name = NULL_IF_CONFIG_SMALL("QuickTime / MOV"),
4550 .priv_class = &mov_class,
4551 .priv_data_size = sizeof(MOVContext),
4552 .extensions = "mov,mp4,m4a,3gp,3g2,mj2",
4553 .read_probe = mov_probe,
4554 .read_header = mov_read_header,
4555 .read_packet = mov_read_packet,
4556 .read_close = mov_read_close,
4557 .read_seek = mov_read_seek,
4558 .flags = AVFMT_NO_BYTE_SEEK,