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 Libav.
11 * Libav 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 * Libav 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 Libav; 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/opt.h"
39 #include "libavcodec/ac3tab.h"
42 #include "avio_internal.h"
45 #include "libavcodec/get_bits.h"
48 #include "replaygain.h"
54 #include "qtpalette.h"
60 /* those functions parse an atom */
61 /* links atom IDs to parse functions */
62 typedef struct MOVParseTableEntry {
64 int (*parse)(MOVContext *ctx, AVIOContext *pb, MOVAtom atom);
67 static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom);
69 static int mov_metadata_track_or_disc_number(MOVContext *c, AVIOContext *pb,
70 unsigned len, const char *key)
74 short current, total = 0;
75 avio_rb16(pb); // unknown
76 current = avio_rb16(pb);
78 total = avio_rb16(pb);
80 snprintf(buf, sizeof(buf), "%d", current);
82 snprintf(buf, sizeof(buf), "%d/%d", current, total);
83 c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
84 av_dict_set(&c->fc->metadata, key, buf, 0);
89 static int mov_metadata_int8_bypass_padding(MOVContext *c, AVIOContext *pb,
90 unsigned len, const char *key)
94 /* bypass padding bytes */
99 snprintf(buf, sizeof(buf), "%d", avio_r8(pb));
100 c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
101 av_dict_set(&c->fc->metadata, key, buf, 0);
106 static int mov_metadata_int8_no_padding(MOVContext *c, AVIOContext *pb,
107 unsigned len, const char *key)
111 snprintf(buf, sizeof(buf), "%d", avio_r8(pb));
112 c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
113 av_dict_set(&c->fc->metadata, key, buf, 0);
118 static int mov_metadata_gnre(MOVContext *c, AVIOContext *pb,
119 unsigned len, const char *key)
124 avio_r8(pb); // unknown
127 if (genre < 1 || genre > ID3v1_GENRE_MAX)
129 snprintf(buf, sizeof(buf), "%s", ff_id3v1_genre_str[genre-1]);
130 c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
131 av_dict_set(&c->fc->metadata, key, buf, 0);
136 static const uint32_t mac_to_unicode[128] = {
137 0x00C4,0x00C5,0x00C7,0x00C9,0x00D1,0x00D6,0x00DC,0x00E1,
138 0x00E0,0x00E2,0x00E4,0x00E3,0x00E5,0x00E7,0x00E9,0x00E8,
139 0x00EA,0x00EB,0x00ED,0x00EC,0x00EE,0x00EF,0x00F1,0x00F3,
140 0x00F2,0x00F4,0x00F6,0x00F5,0x00FA,0x00F9,0x00FB,0x00FC,
141 0x2020,0x00B0,0x00A2,0x00A3,0x00A7,0x2022,0x00B6,0x00DF,
142 0x00AE,0x00A9,0x2122,0x00B4,0x00A8,0x2260,0x00C6,0x00D8,
143 0x221E,0x00B1,0x2264,0x2265,0x00A5,0x00B5,0x2202,0x2211,
144 0x220F,0x03C0,0x222B,0x00AA,0x00BA,0x03A9,0x00E6,0x00F8,
145 0x00BF,0x00A1,0x00AC,0x221A,0x0192,0x2248,0x2206,0x00AB,
146 0x00BB,0x2026,0x00A0,0x00C0,0x00C3,0x00D5,0x0152,0x0153,
147 0x2013,0x2014,0x201C,0x201D,0x2018,0x2019,0x00F7,0x25CA,
148 0x00FF,0x0178,0x2044,0x20AC,0x2039,0x203A,0xFB01,0xFB02,
149 0x2021,0x00B7,0x201A,0x201E,0x2030,0x00C2,0x00CA,0x00C1,
150 0x00CB,0x00C8,0x00CD,0x00CE,0x00CF,0x00CC,0x00D3,0x00D4,
151 0xF8FF,0x00D2,0x00DA,0x00DB,0x00D9,0x0131,0x02C6,0x02DC,
152 0x00AF,0x02D8,0x02D9,0x02DA,0x00B8,0x02DD,0x02DB,0x02C7,
155 static int mov_read_mac_string(MOVContext *c, AVIOContext *pb, int len,
156 char *dst, int dstlen)
159 char *end = dst+dstlen-1;
162 for (i = 0; i < len; i++) {
163 uint8_t t, c = avio_r8(pb);
164 if (c < 0x80 && p < end)
167 PUT_UTF8(mac_to_unicode[c-0x80], t, if (p < end) *p++ = t;);
173 static int mov_read_covr(MOVContext *c, AVIOContext *pb, int type, int len)
177 MOVStreamContext *sc;
182 case 0xd: id = AV_CODEC_ID_MJPEG; break;
183 case 0xe: id = AV_CODEC_ID_PNG; break;
184 case 0x1b: id = AV_CODEC_ID_BMP; break;
186 av_log(c->fc, AV_LOG_WARNING, "Unknown cover type: 0x%x.\n", type);
191 st = avformat_new_stream(c->fc, NULL);
193 return AVERROR(ENOMEM);
194 sc = av_mallocz(sizeof(*sc));
196 return AVERROR(ENOMEM);
199 ret = av_get_packet(pb, &pkt, len);
203 if (pkt.size >= 8 && id != AV_CODEC_ID_BMP) {
204 if (AV_RB64(pkt.data) == 0x89504e470d0a1a0a) {
205 id = AV_CODEC_ID_PNG;
207 id = AV_CODEC_ID_MJPEG;
211 st->disposition |= AV_DISPOSITION_ATTACHED_PIC;
213 st->attached_pic = pkt;
214 st->attached_pic.stream_index = st->index;
215 st->attached_pic.flags |= AV_PKT_FLAG_KEY;
217 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
218 st->codec->codec_id = id;
223 static int mov_metadata_loci(MOVContext *c, AVIOContext *pb, unsigned len)
225 char language[4] = { 0 };
227 uint16_t langcode = 0;
228 double longitude, latitude;
229 const char *key = "location";
231 if (len < 4 + 2 + 1 + 1 + 4 + 4 + 4)
232 return AVERROR_INVALIDDATA;
234 avio_skip(pb, 4); // version+flags
235 langcode = avio_rb16(pb);
236 ff_mov_lang_to_iso639(langcode, language);
239 len -= avio_get_str(pb, len, buf, sizeof(buf)); // place name
241 return AVERROR_INVALIDDATA;
242 avio_skip(pb, 1); // role
246 return AVERROR_INVALIDDATA;
247 longitude = ((int32_t) avio_rb32(pb)) / (float) (1 << 16);
248 latitude = ((int32_t) avio_rb32(pb)) / (float) (1 << 16);
250 // Try to output in the same format as the ?xyz field
251 snprintf(buf, sizeof(buf), "%+08.4f%+09.4f/", latitude, longitude);
252 if (*language && strcmp(language, "und")) {
254 snprintf(key2, sizeof(key2), "%s-%s", key, language);
255 av_dict_set(&c->fc->metadata, key2, buf, 0);
257 c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
258 return av_dict_set(&c->fc->metadata, key, buf, 0);
261 static int mov_read_udta_string(MOVContext *c, AVIOContext *pb, MOVAtom atom)
264 char *str, key2[32], language[4] = {0};
265 const char *key = NULL;
266 uint16_t langcode = 0;
267 uint32_t data_type = 0, str_size, str_size_alloc;
268 int (*parse)(MOVContext*, AVIOContext*, unsigned, const char*) = NULL;
272 case MKTAG( '@','P','R','M'): key = "premiere_version"; raw = 1; break;
273 case MKTAG( '@','P','R','Q'): key = "quicktime_version"; raw = 1; break;
274 case MKTAG( 'X','M','P','_'):
275 if (c->export_xmp) { key = "xmp"; raw = 1; } break;
276 case MKTAG( 'a','A','R','T'): key = "album_artist"; break;
277 case MKTAG( 'a','k','I','D'): key = "account_type";
278 parse = mov_metadata_int8_no_padding; break;
279 case MKTAG( 'a','p','I','D'): key = "account_id"; break;
280 case MKTAG( 'c','a','t','g'): key = "category"; break;
281 case MKTAG( 'c','p','i','l'): key = "compilation";
282 parse = mov_metadata_int8_no_padding; break;
283 case MKTAG( 'c','p','r','t'): key = "copyright"; break;
284 case MKTAG( 'd','e','s','c'): key = "description"; break;
285 case MKTAG( 'd','i','s','k'): key = "disc";
286 parse = mov_metadata_track_or_disc_number; break;
287 case MKTAG( 'e','g','i','d'): key = "episode_uid";
288 parse = mov_metadata_int8_no_padding; break;
289 case MKTAG( 'g','n','r','e'): key = "genre";
290 parse = mov_metadata_gnre; break;
291 case MKTAG( 'h','d','v','d'): key = "hd_video";
292 parse = mov_metadata_int8_no_padding; break;
293 case MKTAG( 'k','e','y','w'): key = "keywords"; break;
294 case MKTAG( 'l','d','e','s'): key = "synopsis"; break;
295 case MKTAG( 'l','o','c','i'):
296 return mov_metadata_loci(c, pb, atom.size);
297 case MKTAG( 'p','c','s','t'): key = "podcast";
298 parse = mov_metadata_int8_no_padding; break;
299 case MKTAG( 'p','g','a','p'): key = "gapless_playback";
300 parse = mov_metadata_int8_no_padding; break;
301 case MKTAG( 'p','u','r','d'): key = "purchase_date"; break;
302 case MKTAG( 'r','t','n','g'): key = "rating";
303 parse = mov_metadata_int8_no_padding; break;
304 case MKTAG( 's','o','a','a'): key = "sort_album_artist"; break;
305 case MKTAG( 's','o','a','l'): key = "sort_album"; break;
306 case MKTAG( 's','o','a','r'): key = "sort_artist"; break;
307 case MKTAG( 's','o','c','o'): key = "sort_composer"; break;
308 case MKTAG( 's','o','n','m'): key = "sort_name"; break;
309 case MKTAG( 's','o','s','n'): key = "sort_show"; break;
310 case MKTAG( 's','t','i','k'): key = "media_type";
311 parse = mov_metadata_int8_no_padding; break;
312 case MKTAG( 't','r','k','n'): key = "track";
313 parse = mov_metadata_track_or_disc_number; break;
314 case MKTAG( 't','v','e','n'): key = "episode_id"; break;
315 case MKTAG( 't','v','e','s'): key = "episode_sort";
316 parse = mov_metadata_int8_bypass_padding; break;
317 case MKTAG( 't','v','n','n'): key = "network"; break;
318 case MKTAG( 't','v','s','h'): key = "show"; break;
319 case MKTAG( 't','v','s','n'): key = "season_number";
320 parse = mov_metadata_int8_bypass_padding; break;
321 case MKTAG(0xa9,'A','R','T'): key = "artist"; break;
322 case MKTAG(0xa9,'P','R','D'): key = "producer"; break;
323 case MKTAG(0xa9,'a','l','b'): key = "album"; break;
324 case MKTAG(0xa9,'a','u','t'): key = "artist"; break;
325 case MKTAG(0xa9,'c','h','p'): key = "chapter"; break;
326 case MKTAG(0xa9,'c','m','t'): key = "comment"; break;
327 case MKTAG(0xa9,'c','o','m'): key = "composer"; break;
328 case MKTAG(0xa9,'c','p','y'): key = "copyright"; break;
329 case MKTAG(0xa9,'d','a','y'): key = "date"; break;
330 case MKTAG(0xa9,'d','i','r'): key = "director"; break;
331 case MKTAG(0xa9,'d','i','s'): key = "disclaimer"; break;
332 case MKTAG(0xa9,'e','d','1'): key = "edit_date"; break;
333 case MKTAG(0xa9,'e','n','c'): key = "encoder"; break;
334 case MKTAG(0xa9,'f','m','t'): key = "original_format"; break;
335 case MKTAG(0xa9,'g','e','n'): key = "genre"; break;
336 case MKTAG(0xa9,'g','r','p'): key = "grouping"; break;
337 case MKTAG(0xa9,'h','s','t'): key = "host_computer"; break;
338 case MKTAG(0xa9,'i','n','f'): key = "comment"; break;
339 case MKTAG(0xa9,'l','y','r'): key = "lyrics"; break;
340 case MKTAG(0xa9,'m','a','k'): key = "make"; break;
341 case MKTAG(0xa9,'m','o','d'): key = "model"; break;
342 case MKTAG(0xa9,'n','a','m'): key = "title"; break;
343 case MKTAG(0xa9,'o','p','e'): key = "original_artist"; break;
344 case MKTAG(0xa9,'p','r','d'): key = "producer"; break;
345 case MKTAG(0xa9,'p','r','f'): key = "performers"; break;
346 case MKTAG(0xa9,'r','e','q'): key = "playback_requirements"; break;
347 case MKTAG(0xa9,'s','r','c'): key = "original_source"; break;
348 case MKTAG(0xa9,'s','t','3'): key = "subtitle"; break;
349 case MKTAG(0xa9,'s','w','r'): key = "encoder"; break;
350 case MKTAG(0xa9,'t','o','o'): key = "encoder"; break;
351 case MKTAG(0xa9,'t','r','k'): key = "track"; break;
352 case MKTAG(0xa9,'u','r','l'): key = "URL"; break;
353 case MKTAG(0xa9,'w','r','n'): key = "warning"; break;
354 case MKTAG(0xa9,'w','r','t'): key = "composer"; break;
355 case MKTAG(0xa9,'x','y','z'): key = "location"; break;
358 if (c->itunes_metadata && atom.size > 8) {
359 int data_size = avio_rb32(pb);
360 int tag = avio_rl32(pb);
361 if (tag == MKTAG('d','a','t','a')) {
362 data_type = avio_rb32(pb); // type
363 avio_rb32(pb); // unknown
364 str_size = data_size - 16;
367 if (atom.type == MKTAG('c', 'o', 'v', 'r')) {
368 int ret = mov_read_covr(c, pb, data_type, str_size);
370 av_log(c->fc, AV_LOG_ERROR, "Error parsing cover art.\n");
375 } else if (atom.size > 4 && key && !c->itunes_metadata && !raw) {
376 str_size = avio_rb16(pb); // string length
377 langcode = avio_rb16(pb);
378 ff_mov_lang_to_iso639(langcode, language);
381 str_size = atom.size;
383 if (c->export_all && !key) {
384 snprintf(tmp_key, 5, "%.4s", (char*)&atom.type);
391 return AVERROR_INVALIDDATA;
393 // allocate twice as much as worst-case
394 str_size_alloc = (raw ? str_size : str_size * 2) + 1;
395 str = av_malloc(str_size_alloc);
397 return AVERROR(ENOMEM);
400 parse(c, pb, str_size, key);
402 if (!raw && (data_type == 3 || (data_type == 0 && (langcode < 0x400 || langcode == 0x7fff)))) { // MAC Encoded
403 mov_read_mac_string(c, pb, str_size, str, str_size_alloc);
405 int ret = ffio_read_size(pb, str, str_size);
412 c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
413 av_dict_set(&c->fc->metadata, key, str, 0);
414 if (*language && strcmp(language, "und")) {
415 snprintf(key2, sizeof(key2), "%s-%s", key, language);
416 av_dict_set(&c->fc->metadata, key2, str, 0);
419 av_log(c->fc, AV_LOG_TRACE, "lang \"%3s\" ", language);
420 av_log(c->fc, AV_LOG_TRACE, "tag \"%s\" value \"%s\" atom \"%.4s\" %d %"PRId64"\n",
421 key, str, (char*)&atom.type, str_size_alloc, atom.size);
427 static int mov_read_chpl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
430 int i, nb_chapters, str_len, version;
434 if ((atom.size -= 5) < 0)
437 version = avio_r8(pb);
440 avio_rb32(pb); // ???
441 nb_chapters = avio_r8(pb);
443 for (i = 0; i < nb_chapters; i++) {
447 start = avio_rb64(pb);
448 str_len = avio_r8(pb);
450 if ((atom.size -= 9+str_len) < 0)
453 ret = ffio_read_size(pb, str, str_len);
457 avpriv_new_chapter(c->fc, i, (AVRational){1,10000000}, start, AV_NOPTS_VALUE, str);
462 #define MIN_DATA_ENTRY_BOX_SIZE 12
463 static int mov_read_dref(MOVContext *c, AVIOContext *pb, MOVAtom atom)
466 MOVStreamContext *sc;
469 if (c->fc->nb_streams < 1)
471 st = c->fc->streams[c->fc->nb_streams-1];
474 avio_rb32(pb); // version + flags
475 entries = avio_rb32(pb);
476 if (entries > (atom.size - 1) / MIN_DATA_ENTRY_BOX_SIZE + 1 ||
477 entries >= UINT_MAX / sizeof(*sc->drefs))
478 return AVERROR_INVALIDDATA;
480 sc->drefs = av_mallocz(entries * sizeof(*sc->drefs));
482 return AVERROR(ENOMEM);
483 sc->drefs_count = entries;
485 for (i = 0; i < sc->drefs_count; i++) {
486 MOVDref *dref = &sc->drefs[i];
487 uint32_t size = avio_rb32(pb);
488 int64_t next = avio_tell(pb) + size - 4;
491 return AVERROR_INVALIDDATA;
493 dref->type = avio_rl32(pb);
494 avio_rb32(pb); // version + flags
495 av_log(c->fc, AV_LOG_TRACE, "type %.4s size %d\n", (char*)&dref->type, size);
497 if (dref->type == MKTAG('a','l','i','s') && size > 150) {
498 /* macintosh alias record */
499 uint16_t volume_len, len;
505 volume_len = avio_r8(pb);
506 volume_len = FFMIN(volume_len, 27);
507 ret = ffio_read_size(pb, dref->volume, 27);
510 dref->volume[volume_len] = 0;
511 av_log(c->fc, AV_LOG_DEBUG, "volume %s, len %d\n", dref->volume, volume_len);
516 len = FFMIN(len, 63);
517 ret = ffio_read_size(pb, dref->filename, 63);
520 dref->filename[len] = 0;
521 av_log(c->fc, AV_LOG_DEBUG, "filename %s, len %d\n", dref->filename, len);
525 /* read next level up_from_alias/down_to_target */
526 dref->nlvl_from = avio_rb16(pb);
527 dref->nlvl_to = avio_rb16(pb);
528 av_log(c->fc, AV_LOG_DEBUG, "nlvl from %d, nlvl to %d\n",
529 dref->nlvl_from, dref->nlvl_to);
533 for (type = 0; type != -1 && avio_tell(pb) < next; ) {
536 type = avio_rb16(pb);
538 av_log(c->fc, AV_LOG_DEBUG, "type %d, len %d\n", type, len);
541 if (type == 2) { // absolute path
543 dref->path = av_mallocz(len+1);
545 return AVERROR(ENOMEM);
547 ret = ffio_read_size(pb, dref->path, len);
549 av_freep(&dref->path);
552 if (len > volume_len && !strncmp(dref->path, dref->volume, volume_len)) {
554 memmove(dref->path, dref->path+volume_len, len);
557 for (j = 0; j < len; j++)
558 if (dref->path[j] == ':' || dref->path[j] == 0)
560 av_log(c->fc, AV_LOG_DEBUG, "path %s\n", dref->path);
561 } else if (type == 0) { // directory name
563 dref->dir = av_malloc(len+1);
565 return AVERROR(ENOMEM);
567 ret = ffio_read_size(pb, dref->dir, len);
569 av_freep(&dref->dir);
573 for (j = 0; j < len; j++)
574 if (dref->dir[j] == ':')
576 av_log(c->fc, AV_LOG_DEBUG, "dir %s\n", dref->dir);
581 avio_seek(pb, next, SEEK_SET);
586 static int mov_read_hdlr(MOVContext *c, AVIOContext *pb, MOVAtom atom)
590 uint32_t av_unused ctype;
595 if (c->fc->nb_streams < 1) // meta before first trak
598 st = c->fc->streams[c->fc->nb_streams-1];
600 avio_r8(pb); /* version */
601 avio_rb24(pb); /* flags */
604 ctype = avio_rl32(pb);
605 type = avio_rl32(pb); /* component subtype */
607 av_log(c->fc, AV_LOG_TRACE, "ctype= %.4s (0x%08x)\n", (char*)&ctype, ctype);
608 av_log(c->fc, AV_LOG_TRACE, "stype= %.4s\n", (char*)&type);
610 if (type == MKTAG('v','i','d','e'))
611 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
612 else if (type == MKTAG('s','o','u','n'))
613 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
614 else if (type == MKTAG('m','1','a',' '))
615 st->codec->codec_id = AV_CODEC_ID_MP2;
616 else if ((type == MKTAG('s','u','b','p')) || (type == MKTAG('c','l','c','p')))
617 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
619 avio_rb32(pb); /* component manufacture */
620 avio_rb32(pb); /* component flags */
621 avio_rb32(pb); /* component flags mask */
623 title_size = atom.size - 24;
624 if (title_size > 0) {
625 title_str = av_malloc(title_size + 1); /* Add null terminator */
627 return AVERROR(ENOMEM);
629 ret = ffio_read_size(pb, title_str, title_size);
631 av_freep(&title_str);
634 title_str[title_size] = 0;
636 int off = (!c->isom && title_str[0] == title_size - 1);
637 av_dict_set(&st->metadata, "handler_name", title_str + off, 0);
639 av_freep(&title_str);
645 int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb)
650 if (fc->nb_streams < 1)
652 st = fc->streams[fc->nb_streams-1];
654 avio_rb32(pb); /* version + flags */
655 ff_mp4_read_descr(fc, pb, &tag);
656 if (tag == MP4ESDescrTag) {
657 ff_mp4_parse_es_descr(pb, NULL);
659 avio_rb16(pb); /* ID */
661 ff_mp4_read_descr(fc, pb, &tag);
662 if (tag == MP4DecConfigDescrTag)
663 ff_mp4_read_dec_config_descr(fc, st, pb);
667 static int mov_read_esds(MOVContext *c, AVIOContext *pb, MOVAtom atom)
669 return ff_mov_read_esds(c->fc, pb);
672 static int mov_read_dac3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
675 enum AVAudioServiceType *ast;
676 int ac3info, acmod, lfeon, bsmod;
678 if (c->fc->nb_streams < 1)
680 st = c->fc->streams[c->fc->nb_streams-1];
682 ast = (enum AVAudioServiceType*)ff_stream_new_side_data(st, AV_PKT_DATA_AUDIO_SERVICE_TYPE,
685 return AVERROR(ENOMEM);
687 ac3info = avio_rb24(pb);
688 bsmod = (ac3info >> 14) & 0x7;
689 acmod = (ac3info >> 11) & 0x7;
690 lfeon = (ac3info >> 10) & 0x1;
691 st->codec->channels = ((int[]){2,1,2,3,3,4,4,5})[acmod] + lfeon;
692 st->codec->channel_layout = avpriv_ac3_channel_layout_tab[acmod];
694 st->codec->channel_layout |= AV_CH_LOW_FREQUENCY;
696 if (st->codec->channels > 1 && bsmod == 0x7)
697 *ast = AV_AUDIO_SERVICE_TYPE_KARAOKE;
699 st->codec->audio_service_type = *ast;
704 static int mov_read_dec3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
707 enum AVAudioServiceType *ast;
708 int eac3info, acmod, lfeon, bsmod;
710 if (c->fc->nb_streams < 1)
712 st = c->fc->streams[c->fc->nb_streams-1];
714 ast = (enum AVAudioServiceType*)ff_stream_new_side_data(st, AV_PKT_DATA_AUDIO_SERVICE_TYPE,
717 return AVERROR(ENOMEM);
719 /* No need to parse fields for additional independent substreams and its
720 * associated dependent substreams since libavcodec's E-AC-3 decoder
721 * does not support them yet. */
722 avio_rb16(pb); /* data_rate and num_ind_sub */
723 eac3info = avio_rb24(pb);
724 bsmod = (eac3info >> 12) & 0x1f;
725 acmod = (eac3info >> 9) & 0x7;
726 lfeon = (eac3info >> 8) & 0x1;
727 st->codec->channel_layout = avpriv_ac3_channel_layout_tab[acmod];
729 st->codec->channel_layout |= AV_CH_LOW_FREQUENCY;
730 st->codec->channels = av_get_channel_layout_nb_channels(st->codec->channel_layout);
732 if (st->codec->channels > 1 && bsmod == 0x7)
733 *ast = AV_AUDIO_SERVICE_TYPE_KARAOKE;
735 st->codec->audio_service_type = *ast;
740 static int mov_read_chan(MOVContext *c, AVIOContext *pb, MOVAtom atom)
744 if (c->fc->nb_streams < 1)
746 st = c->fc->streams[c->fc->nb_streams-1];
751 /* skip version and flags */
754 ff_mov_read_chan(c->fc, pb, st, atom.size - 4);
759 static int mov_read_wfex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
763 if (c->fc->nb_streams < 1)
765 st = c->fc->streams[c->fc->nb_streams-1];
767 return ff_get_wav_header(c->fc, pb, st->codec, atom.size);
770 static int mov_read_pasp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
772 const int num = avio_rb32(pb);
773 const int den = avio_rb32(pb);
776 if (c->fc->nb_streams < 1)
778 st = c->fc->streams[c->fc->nb_streams-1];
780 if ((st->sample_aspect_ratio.den != 1 || st->sample_aspect_ratio.num) && // default
781 (den != st->sample_aspect_ratio.den || num != st->sample_aspect_ratio.num)) {
782 av_log(c->fc, AV_LOG_WARNING,
783 "sample aspect ratio already set to %d:%d, ignoring 'pasp' atom (%d:%d)\n",
784 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
786 } else if (den != 0) {
787 st->sample_aspect_ratio.num = num;
788 st->sample_aspect_ratio.den = den;
793 /* this atom contains actual media data */
794 static int mov_read_mdat(MOVContext *c, AVIOContext *pb, MOVAtom atom)
796 if (atom.size == 0) /* wrong one (MP4) */
799 return 0; /* now go for moov */
802 /* read major brand, minor version and compatible brands and store them as metadata */
803 static int mov_read_ftyp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
807 char minor_ver_str[11]; /* 32 bit integer -> 10 digits + null */
808 char* comp_brands_str;
809 uint8_t type[5] = {0};
810 int ret = ffio_read_size(pb, type, 4);
814 if (strcmp(type, "qt "))
816 av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
817 av_dict_set(&c->fc->metadata, "major_brand", type, 0);
818 minor_ver = avio_rb32(pb); /* minor version */
819 snprintf(minor_ver_str, sizeof(minor_ver_str), "%"PRIu32"", minor_ver);
820 av_dict_set(&c->fc->metadata, "minor_version", minor_ver_str, 0);
822 comp_brand_size = atom.size - 8;
823 if (comp_brand_size < 0)
824 return AVERROR_INVALIDDATA;
825 comp_brands_str = av_malloc(comp_brand_size + 1); /* Add null terminator */
826 if (!comp_brands_str)
827 return AVERROR(ENOMEM);
829 ret = ffio_read_size(pb, comp_brands_str, comp_brand_size);
831 av_freep(&comp_brands_str);
834 comp_brands_str[comp_brand_size] = 0;
835 av_dict_set(&c->fc->metadata, "compatible_brands", comp_brands_str, 0);
836 av_freep(&comp_brands_str);
841 /* this atom should contain all header atoms */
842 static int mov_read_moov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
846 if ((ret = mov_read_default(c, pb, atom)) < 0)
848 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
849 /* so we don't parse the whole file if over a network */
851 return 0; /* now go for mdat */
854 static int mov_read_moof(MOVContext *c, AVIOContext *pb, MOVAtom atom)
856 c->fragment.moof_offset = c->fragment.implicit_offset = avio_tell(pb) - 8;
857 av_log(c->fc, AV_LOG_TRACE, "moof offset %"PRIx64"\n", c->fragment.moof_offset);
858 return mov_read_default(c, pb, atom);
861 static void mov_metadata_creation_time(AVDictionary **metadata, time_t time)
865 struct tm *ptm, tmbuf;
866 time -= 2082844800; /* seconds between 1904-01-01 and Epoch */
867 ptm = gmtime_r(&time, &tmbuf);
869 if (strftime(buffer, sizeof(buffer), "%Y-%m-%d %H:%M:%S", ptm))
870 av_dict_set(metadata, "creation_time", buffer, 0);
874 static int mov_read_mdhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
877 MOVStreamContext *sc;
879 char language[4] = {0};
881 time_t creation_time;
883 if (c->fc->nb_streams < 1)
885 st = c->fc->streams[c->fc->nb_streams-1];
888 if (sc->time_scale) {
889 av_log(c->fc, AV_LOG_ERROR, "Multiple mdhd?\n");
890 return AVERROR_INVALIDDATA;
893 version = avio_r8(pb);
895 avpriv_request_sample(c->fc, "Version %d", version);
896 return AVERROR_PATCHWELCOME;
898 avio_rb24(pb); /* flags */
900 creation_time = avio_rb64(pb);
903 creation_time = avio_rb32(pb);
904 avio_rb32(pb); /* modification time */
906 mov_metadata_creation_time(&st->metadata, creation_time);
908 sc->time_scale = avio_rb32(pb);
909 st->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
911 lang = avio_rb16(pb); /* language */
912 if (ff_mov_lang_to_iso639(lang, language))
913 av_dict_set(&st->metadata, "language", language, 0);
914 avio_rb16(pb); /* quality */
919 static int mov_read_mvhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
921 time_t creation_time;
922 int version = avio_r8(pb); /* version */
923 avio_rb24(pb); /* flags */
926 creation_time = avio_rb64(pb);
929 creation_time = avio_rb32(pb);
930 avio_rb32(pb); /* modification time */
932 mov_metadata_creation_time(&c->fc->metadata, creation_time);
933 c->time_scale = avio_rb32(pb); /* time scale */
935 av_log(c->fc, AV_LOG_TRACE, "time scale = %i\n", c->time_scale);
937 c->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
938 avio_rb32(pb); /* preferred scale */
940 avio_rb16(pb); /* preferred volume */
942 avio_skip(pb, 10); /* reserved */
944 avio_skip(pb, 36); /* display matrix */
946 avio_rb32(pb); /* preview time */
947 avio_rb32(pb); /* preview duration */
948 avio_rb32(pb); /* poster time */
949 avio_rb32(pb); /* selection time */
950 avio_rb32(pb); /* selection duration */
951 avio_rb32(pb); /* current time */
952 avio_rb32(pb); /* next track ID */
957 static int mov_read_smi(MOVContext *c, AVIOContext *pb, MOVAtom atom)
962 if (c->fc->nb_streams < 1)
964 st = c->fc->streams[c->fc->nb_streams-1];
966 if ((uint64_t)atom.size > (1<<30))
967 return AVERROR_INVALIDDATA;
969 // currently SVQ3 decoder expect full STSD header - so let's fake it
970 // this should be fixed and just SMI header should be passed
971 av_free(st->codec->extradata);
972 st->codec->extradata = av_mallocz(atom.size + 0x5a + AV_INPUT_BUFFER_PADDING_SIZE);
973 if (!st->codec->extradata)
974 return AVERROR(ENOMEM);
975 st->codec->extradata_size = 0x5a + atom.size;
976 memcpy(st->codec->extradata, "SVQ3", 4); // fake
978 ret = ffio_read_size(pb, st->codec->extradata + 0x5a, atom.size);
982 av_log(c->fc, AV_LOG_TRACE, "Reading SMI %"PRId64" %s\n", atom.size, st->codec->extradata + 0x5a);
986 static int mov_read_enda(MOVContext *c, AVIOContext *pb, MOVAtom atom)
991 if (c->fc->nb_streams < 1)
993 st = c->fc->streams[c->fc->nb_streams-1];
995 little_endian = !!avio_rb16(pb);
996 av_log(c->fc, AV_LOG_TRACE, "enda %d\n", little_endian);
997 if (little_endian == 1) {
998 switch (st->codec->codec_id) {
999 case AV_CODEC_ID_PCM_S24BE:
1000 st->codec->codec_id = AV_CODEC_ID_PCM_S24LE;
1002 case AV_CODEC_ID_PCM_S32BE:
1003 st->codec->codec_id = AV_CODEC_ID_PCM_S32LE;
1005 case AV_CODEC_ID_PCM_F32BE:
1006 st->codec->codec_id = AV_CODEC_ID_PCM_F32LE;
1008 case AV_CODEC_ID_PCM_F64BE:
1009 st->codec->codec_id = AV_CODEC_ID_PCM_F64LE;
1018 static int mov_read_colr(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1021 char color_parameter_type[5] = { 0 };
1022 uint16_t color_primaries, color_trc, color_matrix;
1025 if (c->fc->nb_streams < 1)
1027 st = c->fc->streams[c->fc->nb_streams - 1];
1029 ret = ffio_read_size(pb, color_parameter_type, 4);
1032 if (strncmp(color_parameter_type, "nclx", 4) &&
1033 strncmp(color_parameter_type, "nclc", 4)) {
1034 av_log(c->fc, AV_LOG_WARNING, "unsupported color_parameter_type %s\n",
1035 color_parameter_type);
1039 color_primaries = avio_rb16(pb);
1040 color_trc = avio_rb16(pb);
1041 color_matrix = avio_rb16(pb);
1043 av_log(c->fc, AV_LOG_TRACE,
1044 "%s: pri %"PRIu16" trc %"PRIu16" matrix %"PRIu16"",
1045 color_parameter_type, color_primaries, color_trc, color_matrix);
1047 if (!strncmp(color_parameter_type, "nclx", 4)) {
1048 uint8_t color_range = avio_r8(pb) >> 7;
1049 av_log(c->fc, AV_LOG_TRACE, " full %"PRIu8"", color_range);
1051 st->codec->color_range = AVCOL_RANGE_JPEG;
1053 st->codec->color_range = AVCOL_RANGE_MPEG;
1054 /* 14496-12 references JPEG XR specs (rather than the more complete
1055 * 23001-8) so some adjusting is required */
1056 if (color_primaries >= AVCOL_PRI_FILM)
1057 color_primaries = AVCOL_PRI_UNSPECIFIED;
1058 if ((color_trc >= AVCOL_TRC_LINEAR &&
1059 color_trc <= AVCOL_TRC_LOG_SQRT) ||
1060 color_trc >= AVCOL_TRC_BT2020_10)
1061 color_trc = AVCOL_TRC_UNSPECIFIED;
1062 if (color_matrix >= AVCOL_SPC_BT2020_NCL)
1063 color_matrix = AVCOL_SPC_UNSPECIFIED;
1064 st->codec->color_primaries = color_primaries;
1065 st->codec->color_trc = color_trc;
1066 st->codec->colorspace = color_matrix;
1067 } else if (!strncmp(color_parameter_type, "nclc", 4)) {
1068 /* color primaries, Table 4-4 */
1069 switch (color_primaries) {
1070 case 1: st->codec->color_primaries = AVCOL_PRI_BT709; break;
1071 case 5: st->codec->color_primaries = AVCOL_PRI_SMPTE170M; break;
1072 case 6: st->codec->color_primaries = AVCOL_PRI_SMPTE240M; break;
1074 /* color transfer, Table 4-5 */
1075 switch (color_trc) {
1076 case 1: st->codec->color_trc = AVCOL_TRC_BT709; break;
1077 case 7: st->codec->color_trc = AVCOL_TRC_SMPTE240M; break;
1079 /* color matrix, Table 4-6 */
1080 switch (color_matrix) {
1081 case 1: st->codec->colorspace = AVCOL_SPC_BT709; break;
1082 case 6: st->codec->colorspace = AVCOL_SPC_BT470BG; break;
1083 case 7: st->codec->colorspace = AVCOL_SPC_SMPTE240M; break;
1086 av_log(c->fc, AV_LOG_TRACE, "\n");
1091 static int mov_read_fiel(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1094 unsigned mov_field_order;
1095 enum AVFieldOrder decoded_field_order = AV_FIELD_UNKNOWN;
1097 if (c->fc->nb_streams < 1) // will happen with jp2 files
1099 st = c->fc->streams[c->fc->nb_streams-1];
1101 return AVERROR_INVALIDDATA;
1102 mov_field_order = avio_rb16(pb);
1103 if ((mov_field_order & 0xFF00) == 0x0100)
1104 decoded_field_order = AV_FIELD_PROGRESSIVE;
1105 else if ((mov_field_order & 0xFF00) == 0x0200) {
1106 switch (mov_field_order & 0xFF) {
1107 case 0x01: decoded_field_order = AV_FIELD_TT;
1109 case 0x06: decoded_field_order = AV_FIELD_BB;
1111 case 0x09: decoded_field_order = AV_FIELD_TB;
1113 case 0x0E: decoded_field_order = AV_FIELD_BT;
1117 if (decoded_field_order == AV_FIELD_UNKNOWN && mov_field_order) {
1118 av_log(NULL, AV_LOG_ERROR, "Unknown MOV field order 0x%04x\n", mov_field_order);
1120 st->codec->field_order = decoded_field_order;
1125 /* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
1126 static int mov_read_extradata(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1133 if (c->fc->nb_streams < 1) // will happen with jp2 files
1135 st= c->fc->streams[c->fc->nb_streams-1];
1136 size= (uint64_t)st->codec->extradata_size + atom.size + 8 + AV_INPUT_BUFFER_PADDING_SIZE;
1137 if (size > INT_MAX || (uint64_t)atom.size > INT_MAX)
1138 return AVERROR_INVALIDDATA;
1139 if ((err = av_reallocp(&st->codec->extradata, size)) < 0) {
1140 st->codec->extradata_size = 0;
1143 buf = st->codec->extradata + st->codec->extradata_size;
1144 st->codec->extradata_size= size - AV_INPUT_BUFFER_PADDING_SIZE;
1145 AV_WB32( buf , atom.size + 8);
1146 AV_WL32( buf + 4, atom.type);
1148 err = ffio_read_size(pb, buf + 8, atom.size);
1155 static int mov_read_wave(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1160 if (c->fc->nb_streams < 1)
1162 st = c->fc->streams[c->fc->nb_streams-1];
1164 if ((uint64_t)atom.size > (1<<30))
1165 return AVERROR_INVALIDDATA;
1167 if (st->codec->codec_id == AV_CODEC_ID_QDM2 || st->codec->codec_id == AV_CODEC_ID_QDMC) {
1168 // pass all frma atom to codec, needed at least for QDMC and QDM2
1169 av_free(st->codec->extradata);
1170 st->codec->extradata = av_mallocz(atom.size + AV_INPUT_BUFFER_PADDING_SIZE);
1171 if (!st->codec->extradata)
1172 return AVERROR(ENOMEM);
1173 st->codec->extradata_size = atom.size;
1175 ret = ffio_read_size(pb, st->codec->extradata, atom.size);
1178 } else if (atom.size > 8) { /* to read frma, esds atoms */
1179 if ((ret = mov_read_default(c, pb, atom)) < 0)
1182 avio_skip(pb, atom.size);
1187 * This function reads atom content and puts data in extradata without tag
1188 * nor size unlike mov_read_extradata.
1190 static int mov_read_glbl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1195 if (c->fc->nb_streams < 1)
1197 st = c->fc->streams[c->fc->nb_streams-1];
1199 if ((uint64_t)atom.size > (1<<30))
1200 return AVERROR_INVALIDDATA;
1202 if (atom.size >= 10) {
1203 // Broken files created by legacy versions of libavformat will
1204 // wrap a whole fiel atom inside of a glbl atom.
1205 unsigned size = avio_rb32(pb);
1206 unsigned type = avio_rl32(pb);
1207 avio_seek(pb, -8, SEEK_CUR);
1208 if (type == MKTAG('f','i','e','l') && size == atom.size)
1209 return mov_read_default(c, pb, atom);
1211 av_free(st->codec->extradata);
1212 st->codec->extradata = av_mallocz(atom.size + AV_INPUT_BUFFER_PADDING_SIZE);
1213 if (!st->codec->extradata)
1214 return AVERROR(ENOMEM);
1215 st->codec->extradata_size = atom.size;
1217 ret = ffio_read_size(pb, st->codec->extradata, atom.size);
1224 static int mov_read_dvc1(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1227 uint8_t profile_level;
1230 if (c->fc->nb_streams < 1)
1232 st = c->fc->streams[c->fc->nb_streams-1];
1234 if (atom.size >= (1<<28) || atom.size < 7)
1235 return AVERROR_INVALIDDATA;
1237 profile_level = avio_r8(pb);
1238 if ((profile_level & 0xf0) != 0xc0)
1241 av_free(st->codec->extradata);
1242 st->codec->extradata = av_mallocz(atom.size - 7 + AV_INPUT_BUFFER_PADDING_SIZE);
1243 if (!st->codec->extradata)
1244 return AVERROR(ENOMEM);
1245 st->codec->extradata_size = atom.size - 7;
1246 avio_seek(pb, 6, SEEK_CUR);
1248 ret = ffio_read_size(pb, st->codec->extradata, st->codec->extradata_size);
1256 * An strf atom is a BITMAPINFOHEADER struct. This struct is 40 bytes itself,
1257 * but can have extradata appended at the end after the 40 bytes belonging
1260 static int mov_read_strf(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1265 if (c->fc->nb_streams < 1)
1267 if (atom.size <= 40)
1269 st = c->fc->streams[c->fc->nb_streams-1];
1271 if ((uint64_t)atom.size > (1<<30))
1272 return AVERROR_INVALIDDATA;
1274 av_free(st->codec->extradata);
1275 st->codec->extradata = av_mallocz(atom.size - 40 + AV_INPUT_BUFFER_PADDING_SIZE);
1276 if (!st->codec->extradata)
1277 return AVERROR(ENOMEM);
1278 st->codec->extradata_size = atom.size - 40;
1281 ret = ffio_read_size(pb, st->codec->extradata, atom.size - 40);
1288 static int mov_read_stco(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1291 MOVStreamContext *sc;
1292 unsigned int i, entries;
1294 if (c->fc->nb_streams < 1)
1296 st = c->fc->streams[c->fc->nb_streams-1];
1299 avio_r8(pb); /* version */
1300 avio_rb24(pb); /* flags */
1302 entries = avio_rb32(pb);
1306 if (entries >= UINT_MAX/sizeof(int64_t))
1307 return AVERROR_INVALIDDATA;
1309 sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
1310 if (!sc->chunk_offsets)
1311 return AVERROR(ENOMEM);
1312 sc->chunk_count = entries;
1314 if (atom.type == MKTAG('s','t','c','o'))
1315 for (i = 0; i < entries && !pb->eof_reached; i++)
1316 sc->chunk_offsets[i] = avio_rb32(pb);
1317 else if (atom.type == MKTAG('c','o','6','4'))
1318 for (i = 0; i < entries && !pb->eof_reached; i++)
1319 sc->chunk_offsets[i] = avio_rb64(pb);
1321 return AVERROR_INVALIDDATA;
1323 sc->chunk_count = i;
1325 if (pb->eof_reached)
1332 * Compute codec id for 'lpcm' tag.
1333 * See CoreAudioTypes and AudioStreamBasicDescription at Apple.
1335 enum AVCodecID ff_mov_get_lpcm_codec_id(int bps, int flags)
1342 return ff_get_pcm_codec_id(bps, flags & 1, flags & 2, flags & 4 ? -1 : 0);
1345 static int mov_codec_id(AVStream *st, uint32_t format)
1347 int id = ff_codec_get_id(ff_codec_movaudio_tags, format);
1350 ((format & 0xFFFF) == 'm' + ('s' << 8) ||
1351 (format & 0xFFFF) == 'T' + ('S' << 8)))
1352 id = ff_codec_get_id(ff_codec_wav_tags, av_bswap32(format) & 0xFFFF);
1354 if (st->codec->codec_type != AVMEDIA_TYPE_VIDEO && id > 0) {
1355 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
1356 } else if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO &&
1357 /* skip old asf mpeg4 tag */
1358 format && format != MKTAG('m','p','4','s')) {
1359 id = ff_codec_get_id(ff_codec_movvideo_tags, format);
1361 id = ff_codec_get_id(ff_codec_bmp_tags, format);
1363 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
1364 else if (st->codec->codec_type == AVMEDIA_TYPE_DATA) {
1365 id = ff_codec_get_id(ff_codec_movsubtitle_tags, format);
1367 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
1371 st->codec->codec_tag = format;
1376 static void mov_parse_stsd_video(MOVContext *c, AVIOContext *pb,
1377 AVStream *st, MOVStreamContext *sc)
1379 uint8_t codec_name[32];
1380 unsigned int color_depth, len, j;
1381 int color_greyscale;
1384 avio_rb16(pb); /* version */
1385 avio_rb16(pb); /* revision level */
1386 avio_rb32(pb); /* vendor */
1387 avio_rb32(pb); /* temporal quality */
1388 avio_rb32(pb); /* spatial quality */
1390 st->codec->width = avio_rb16(pb); /* width */
1391 st->codec->height = avio_rb16(pb); /* height */
1393 avio_rb32(pb); /* horiz resolution */
1394 avio_rb32(pb); /* vert resolution */
1395 avio_rb32(pb); /* data size, always 0 */
1396 avio_rb16(pb); /* frames per samples */
1398 len = avio_r8(pb); /* codec name, pascal string */
1401 mov_read_mac_string(c, pb, len, codec_name, sizeof(codec_name));
1403 avio_skip(pb, 31 - len);
1406 av_dict_set(&st->metadata, "encoder", codec_name, 0);
1408 /* codec_tag YV12 triggers an UV swap in rawdec.c */
1409 if (!memcmp(codec_name, "Planar Y'CbCr 8-bit 4:2:0", 25))
1410 st->codec->codec_tag = MKTAG('I', '4', '2', '0');
1411 /* Flash Media Server uses tag H263 with Sorenson Spark */
1412 if (st->codec->codec_tag == MKTAG('H','2','6','3') &&
1413 !memcmp(codec_name, "Sorenson H263", 13))
1414 st->codec->codec_id = AV_CODEC_ID_FLV1;
1416 st->codec->bits_per_coded_sample = avio_rb16(pb); /* depth */
1417 color_table_id = avio_rb16(pb); /* colortable id */
1418 av_log(c->fc, AV_LOG_TRACE, "depth %d, ctab id %d\n",
1419 st->codec->bits_per_coded_sample, color_table_id);
1420 /* figure out the palette situation */
1421 color_depth = st->codec->bits_per_coded_sample & 0x1F;
1422 color_greyscale = st->codec->bits_per_coded_sample & 0x20;
1424 /* if the depth is 2, 4, or 8 bpp, file is palettized */
1425 if ((color_depth == 2) || (color_depth == 4) || (color_depth == 8)) {
1426 /* for palette traversal */
1427 unsigned int color_start, color_count, color_end;
1428 unsigned char r, g, b;
1430 if (color_greyscale) {
1431 int color_index, color_dec;
1432 /* compute the greyscale palette */
1433 st->codec->bits_per_coded_sample = color_depth;
1434 color_count = 1 << color_depth;
1436 color_dec = 256 / (color_count - 1);
1437 for (j = 0; j < color_count; j++) {
1438 r = g = b = color_index;
1439 sc->palette[j] = (r << 16) | (g << 8) | (b);
1440 color_index -= color_dec;
1441 if (color_index < 0)
1444 } else if (color_table_id) {
1445 const uint8_t *color_table;
1446 /* if flag bit 3 is set, use the default palette */
1447 color_count = 1 << color_depth;
1448 if (color_depth == 2)
1449 color_table = ff_qt_default_palette_4;
1450 else if (color_depth == 4)
1451 color_table = ff_qt_default_palette_16;
1453 color_table = ff_qt_default_palette_256;
1455 for (j = 0; j < color_count; j++) {
1456 r = color_table[j * 3 + 0];
1457 g = color_table[j * 3 + 1];
1458 b = color_table[j * 3 + 2];
1459 sc->palette[j] = (r << 16) | (g << 8) | (b);
1462 /* load the palette from the file */
1463 color_start = avio_rb32(pb);
1464 color_count = avio_rb16(pb);
1465 color_end = avio_rb16(pb);
1466 if ((color_start <= 255) && (color_end <= 255)) {
1467 for (j = color_start; j <= color_end; j++) {
1468 /* each R, G, or B component is 16 bits;
1469 * only use the top 8 bits; skip alpha bytes
1479 sc->palette[j] = (r << 16) | (g << 8) | (b);
1483 sc->has_palette = 1;
1487 static void mov_parse_stsd_audio(MOVContext *c, AVIOContext *pb,
1488 AVStream *st, MOVStreamContext *sc)
1490 int bits_per_sample, flags;
1491 uint16_t version = avio_rb16(pb);
1493 avio_rb16(pb); /* revision level */
1494 avio_rb32(pb); /* vendor */
1496 st->codec->channels = avio_rb16(pb); /* channel count */
1497 st->codec->bits_per_coded_sample = avio_rb16(pb); /* sample size */
1498 av_log(c->fc, AV_LOG_TRACE, "audio channels %d\n", st->codec->channels);
1500 sc->audio_cid = avio_rb16(pb);
1501 avio_rb16(pb); /* packet size = 0 */
1503 st->codec->sample_rate = ((avio_rb32(pb) >> 16));
1505 // Read QT version 1 fields. In version 0 these do not exist.
1506 av_log(c->fc, AV_LOG_TRACE, "version =%d, isom =%d\n", version, c->isom);
1509 sc->samples_per_frame = avio_rb32(pb);
1510 avio_rb32(pb); /* bytes per packet */
1511 sc->bytes_per_frame = avio_rb32(pb);
1512 avio_rb32(pb); /* bytes per sample */
1513 } else if (version == 2) {
1514 avio_rb32(pb); /* sizeof struct only */
1515 st->codec->sample_rate = av_int2double(avio_rb64(pb));
1516 st->codec->channels = avio_rb32(pb);
1517 avio_rb32(pb); /* always 0x7F000000 */
1518 st->codec->bits_per_coded_sample = avio_rb32(pb);
1520 flags = avio_rb32(pb); /* lpcm format specific flag */
1521 sc->bytes_per_frame = avio_rb32(pb);
1522 sc->samples_per_frame = avio_rb32(pb);
1523 if (st->codec->codec_tag == MKTAG('l','p','c','m'))
1524 st->codec->codec_id =
1525 ff_mov_get_lpcm_codec_id(st->codec->bits_per_coded_sample,
1528 if (version == 0 || (version == 1 && sc->audio_cid != -2)) {
1529 /* can't correctly handle variable sized packet as audio unit */
1530 switch (st->codec->codec_id) {
1531 case AV_CODEC_ID_MP2:
1532 case AV_CODEC_ID_MP3:
1533 st->need_parsing = AVSTREAM_PARSE_FULL;
1539 switch (st->codec->codec_id) {
1540 case AV_CODEC_ID_PCM_S8:
1541 case AV_CODEC_ID_PCM_U8:
1542 if (st->codec->bits_per_coded_sample == 16)
1543 st->codec->codec_id = AV_CODEC_ID_PCM_S16BE;
1545 case AV_CODEC_ID_PCM_S16LE:
1546 case AV_CODEC_ID_PCM_S16BE:
1547 if (st->codec->bits_per_coded_sample == 8)
1548 st->codec->codec_id = AV_CODEC_ID_PCM_S8;
1549 else if (st->codec->bits_per_coded_sample == 24)
1550 st->codec->codec_id =
1551 st->codec->codec_id == AV_CODEC_ID_PCM_S16BE ?
1552 AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE;
1554 /* set values for old format before stsd version 1 appeared */
1555 case AV_CODEC_ID_MACE3:
1556 sc->samples_per_frame = 6;
1557 sc->bytes_per_frame = 2 * st->codec->channels;
1559 case AV_CODEC_ID_MACE6:
1560 sc->samples_per_frame = 6;
1561 sc->bytes_per_frame = 1 * st->codec->channels;
1563 case AV_CODEC_ID_ADPCM_IMA_QT:
1564 sc->samples_per_frame = 64;
1565 sc->bytes_per_frame = 34 * st->codec->channels;
1567 case AV_CODEC_ID_GSM:
1568 sc->samples_per_frame = 160;
1569 sc->bytes_per_frame = 33;
1575 bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
1576 if (bits_per_sample) {
1577 st->codec->bits_per_coded_sample = bits_per_sample;
1578 sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
1582 static void mov_parse_stsd_subtitle(MOVContext *c, AVIOContext *pb,
1583 AVStream *st, MOVStreamContext *sc,
1586 // ttxt stsd contains display flags, justification, background
1587 // color, fonts, and default styles, so fake an atom to read it
1588 MOVAtom fake_atom = { .size = size };
1589 // mp4s contains a regular esds atom
1590 if (st->codec->codec_tag != AV_RL32("mp4s"))
1591 mov_read_glbl(c, pb, fake_atom);
1592 st->codec->width = sc->width;
1593 st->codec->height = sc->height;
1596 static uint32_t yuv_to_rgba(uint32_t ycbcr)
1601 y = (ycbcr >> 16) & 0xFF;
1602 cr = (ycbcr >> 8) & 0xFF;
1605 b = av_clip_uint8(1.164 * (y - 16) + 2.018 * (cb - 128));
1606 g = av_clip_uint8(1.164 * (y - 16) - 0.813 * (cr - 128) - 0.391 * (cb - 128));
1607 r = av_clip_uint8(1.164 * (y - 16) + 1.596 * (cr - 128));
1609 return (r << 16) | (g << 8) | b;
1612 static int mov_rewrite_dvd_sub_extradata(AVStream *st)
1614 char buf[256] = {0};
1615 uint8_t *src = st->codec->extradata;
1618 if (st->codec->extradata_size != 64)
1621 if (st->codec->width > 0 && st->codec->height > 0)
1622 snprintf(buf, sizeof(buf), "size: %dx%d\n",
1623 st->codec->width, st->codec->height);
1624 av_strlcat(buf, "palette: ", sizeof(buf));
1626 for (i = 0; i < 16; i++) {
1627 uint32_t yuv = AV_RB32(src + i * 4);
1628 uint32_t rgba = yuv_to_rgba(yuv);
1630 av_strlcatf(buf, sizeof(buf), "%06"PRIx32"%s", rgba, i != 15 ? ", " : "");
1633 if (av_strlcat(buf, "\n", sizeof(buf)) >= sizeof(buf))
1636 av_freep(&st->codec->extradata);
1637 st->codec->extradata_size = 0;
1638 st->codec->extradata = av_mallocz(strlen(buf) + AV_INPUT_BUFFER_PADDING_SIZE);
1639 if (!st->codec->extradata)
1640 return AVERROR(ENOMEM);
1641 st->codec->extradata_size = strlen(buf);
1642 memcpy(st->codec->extradata, buf, st->codec->extradata_size);
1647 static int mov_parse_stsd_data(MOVContext *c, AVIOContext *pb,
1648 AVStream *st, MOVStreamContext *sc,
1653 if (st->codec->codec_tag == MKTAG('t','m','c','d')) {
1654 st->codec->extradata_size = size;
1655 st->codec->extradata = av_malloc(size + AV_INPUT_BUFFER_PADDING_SIZE);
1656 if (!st->codec->extradata)
1657 return AVERROR(ENOMEM);
1658 ret = ffio_read_size(pb, st->codec->extradata, size);
1662 /* other codec type, just skip (rtp, mp4s ...) */
1663 avio_skip(pb, size);
1668 static int mov_finalize_stsd_codec(MOVContext *c, AVIOContext *pb,
1669 AVStream *st, MOVStreamContext *sc)
1671 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
1672 !st->codec->sample_rate && sc->time_scale > 1)
1673 st->codec->sample_rate = sc->time_scale;
1675 /* special codec parameters handling */
1676 switch (st->codec->codec_id) {
1677 #if CONFIG_DV_DEMUXER
1678 case AV_CODEC_ID_DVAUDIO:
1679 c->dv_fctx = avformat_alloc_context();
1681 av_log(c->fc, AV_LOG_ERROR, "dv demux context alloc error\n");
1682 return AVERROR(ENOMEM);
1684 c->dv_demux = avpriv_dv_init_demux(c->dv_fctx);
1686 av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
1687 return AVERROR(ENOMEM);
1689 sc->dv_audio_container = 1;
1690 st->codec->codec_id = AV_CODEC_ID_PCM_S16LE;
1693 /* no ifdef since parameters are always those */
1694 case AV_CODEC_ID_QCELP:
1695 st->codec->channels = 1;
1696 // force sample rate for qcelp when not stored in mov
1697 if (st->codec->codec_tag != MKTAG('Q','c','l','p'))
1698 st->codec->sample_rate = 8000;
1700 case AV_CODEC_ID_AMR_NB:
1701 st->codec->channels = 1;
1702 /* force sample rate for amr, stsd in 3gp does not store sample rate */
1703 st->codec->sample_rate = 8000;
1705 case AV_CODEC_ID_AMR_WB:
1706 st->codec->channels = 1;
1707 st->codec->sample_rate = 16000;
1709 case AV_CODEC_ID_MP2:
1710 case AV_CODEC_ID_MP3:
1711 /* force type after stsd for m1a hdlr */
1712 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
1714 case AV_CODEC_ID_GSM:
1715 case AV_CODEC_ID_ADPCM_MS:
1716 case AV_CODEC_ID_ADPCM_IMA_WAV:
1717 case AV_CODEC_ID_ILBC:
1718 st->codec->block_align = sc->bytes_per_frame;
1720 case AV_CODEC_ID_ALAC:
1721 if (st->codec->extradata_size == 36) {
1722 st->codec->channels = AV_RB8 (st->codec->extradata + 21);
1723 st->codec->sample_rate = AV_RB32(st->codec->extradata + 32);
1726 case AV_CODEC_ID_VC1:
1727 st->need_parsing = AVSTREAM_PARSE_FULL;
1735 static int mov_skip_multiple_stsd(MOVContext *c, AVIOContext *pb,
1736 int codec_tag, int format,
1739 int video_codec_id = ff_codec_get_id(ff_codec_movvideo_tags, format);
1742 (codec_tag == AV_RL32("avc1") ||
1743 codec_tag == AV_RL32("hvc1") ||
1744 codec_tag == AV_RL32("hev1") ||
1745 (codec_tag != format &&
1746 (c->fc->video_codec_id ? video_codec_id != c->fc->video_codec_id
1747 : codec_tag != MKTAG('j','p','e','g'))))) {
1748 /* Multiple fourcc, we skip JPEG. This is not correct, we should
1749 * export it as a separate AVStream but this needs a few changes
1750 * in the MOV demuxer, patch welcome. */
1752 av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n");
1753 avio_skip(pb, size);
1760 int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries)
1763 MOVStreamContext *sc;
1764 int pseudo_stream_id;
1766 if (c->fc->nb_streams < 1)
1768 st = c->fc->streams[c->fc->nb_streams-1];
1771 for (pseudo_stream_id = 0;
1772 pseudo_stream_id < entries && !pb->eof_reached;
1773 pseudo_stream_id++) {
1774 //Parsing Sample description table
1776 int ret, dref_id = 1;
1777 MOVAtom a = { AV_RL32("stsd") };
1778 int64_t start_pos = avio_tell(pb);
1779 uint32_t size = avio_rb32(pb); /* size */
1780 uint32_t format = avio_rl32(pb); /* data format */
1783 avio_rb32(pb); /* reserved */
1784 avio_rb16(pb); /* reserved */
1785 dref_id = avio_rb16(pb);
1787 av_log(c->fc, AV_LOG_ERROR, "invalid size %"PRIu32" in stsd\n", size);
1788 return AVERROR_INVALIDDATA;
1791 if (mov_skip_multiple_stsd(c, pb, st->codec->codec_tag, format,
1792 size - (avio_tell(pb) - start_pos)))
1795 sc->pseudo_stream_id = st->codec->codec_tag ? -1 : pseudo_stream_id;
1796 sc->dref_id= dref_id;
1798 id = mov_codec_id(st, format);
1800 av_log(c->fc, AV_LOG_TRACE,
1801 "size=%"PRIu32" format=0x%08x codec_type=%d\n",
1802 size, format, st->codec->codec_type);
1804 if (st->codec->codec_type==AVMEDIA_TYPE_VIDEO) {
1805 st->codec->codec_id = id;
1806 mov_parse_stsd_video(c, pb, st, sc);
1807 } else if (st->codec->codec_type==AVMEDIA_TYPE_AUDIO) {
1808 st->codec->codec_id = id;
1809 mov_parse_stsd_audio(c, pb, st, sc);
1810 } else if (st->codec->codec_type==AVMEDIA_TYPE_SUBTITLE){
1811 st->codec->codec_id = id;
1812 mov_parse_stsd_subtitle(c, pb, st, sc,
1813 size - (avio_tell(pb) - start_pos));
1815 ret = mov_parse_stsd_data(c, pb, st, sc,
1816 size - (avio_tell(pb) - start_pos));
1820 /* this will read extra atoms at the end (wave, alac, damr, avcC, hvcC, SMI ...) */
1821 a.size = size - (avio_tell(pb) - start_pos);
1823 if ((ret = mov_read_default(c, pb, a)) < 0)
1825 } else if (a.size > 0)
1826 avio_skip(pb, a.size);
1829 if (pb->eof_reached)
1832 return mov_finalize_stsd_codec(c, pb, st, sc);
1835 static int mov_read_stsd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1839 avio_r8(pb); /* version */
1840 avio_rb24(pb); /* flags */
1841 entries = avio_rb32(pb);
1843 return ff_mov_read_stsd_entries(c, pb, entries);
1846 static int mov_read_stsc(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1849 MOVStreamContext *sc;
1850 unsigned int i, entries;
1852 if (c->fc->nb_streams < 1)
1854 st = c->fc->streams[c->fc->nb_streams-1];
1857 avio_r8(pb); /* version */
1858 avio_rb24(pb); /* flags */
1860 entries = avio_rb32(pb);
1862 av_log(c->fc, AV_LOG_TRACE, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
1866 if (entries >= UINT_MAX / sizeof(*sc->stsc_data))
1867 return AVERROR_INVALIDDATA;
1868 sc->stsc_data = av_malloc(entries * sizeof(*sc->stsc_data));
1870 return AVERROR(ENOMEM);
1872 for (i = 0; i < entries && !pb->eof_reached; i++) {
1873 sc->stsc_data[i].first = avio_rb32(pb);
1874 sc->stsc_data[i].count = avio_rb32(pb);
1875 sc->stsc_data[i].id = avio_rb32(pb);
1880 if (pb->eof_reached)
1886 static int mov_read_stps(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1889 MOVStreamContext *sc;
1890 unsigned i, entries;
1892 if (c->fc->nb_streams < 1)
1894 st = c->fc->streams[c->fc->nb_streams-1];
1897 avio_rb32(pb); // version + flags
1899 entries = avio_rb32(pb);
1900 if (entries >= UINT_MAX / sizeof(*sc->stps_data))
1901 return AVERROR_INVALIDDATA;
1902 sc->stps_data = av_malloc(entries * sizeof(*sc->stps_data));
1904 return AVERROR(ENOMEM);
1906 for (i = 0; i < entries && !pb->eof_reached; i++) {
1907 sc->stps_data[i] = avio_rb32(pb);
1908 //av_log(c->fc, AV_LOG_TRACE, "stps %d\n", sc->stps_data[i]);
1913 if (pb->eof_reached)
1919 static int mov_read_stss(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1922 MOVStreamContext *sc;
1923 unsigned int i, entries;
1925 if (c->fc->nb_streams < 1)
1927 st = c->fc->streams[c->fc->nb_streams-1];
1930 avio_r8(pb); /* version */
1931 avio_rb24(pb); /* flags */
1933 entries = avio_rb32(pb);
1935 av_log(c->fc, AV_LOG_TRACE, "keyframe_count = %d\n", entries);
1939 sc->keyframe_absent = 1;
1942 if (entries >= UINT_MAX / sizeof(int))
1943 return AVERROR_INVALIDDATA;
1944 av_freep(&sc->keyframes);
1945 sc->keyframes = av_malloc(entries * sizeof(int));
1947 return AVERROR(ENOMEM);
1949 for (i = 0; i < entries && !pb->eof_reached; i++) {
1950 sc->keyframes[i] = avio_rb32(pb);
1951 //av_log(c->fc, AV_LOG_TRACE, "keyframes[]=%d\n", sc->keyframes[i]);
1954 sc->keyframe_count = i;
1956 if (pb->eof_reached)
1962 static int mov_read_stsz(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1965 MOVStreamContext *sc;
1966 unsigned int i, entries, sample_size, field_size, num_bytes;
1971 if (c->fc->nb_streams < 1)
1973 st = c->fc->streams[c->fc->nb_streams-1];
1976 avio_r8(pb); /* version */
1977 avio_rb24(pb); /* flags */
1979 if (atom.type == MKTAG('s','t','s','z')) {
1980 sample_size = avio_rb32(pb);
1981 if (!sc->sample_size) /* do not overwrite value computed in stsd */
1982 sc->sample_size = sample_size;
1986 avio_rb24(pb); /* reserved */
1987 field_size = avio_r8(pb);
1989 entries = avio_rb32(pb);
1991 av_log(c->fc, AV_LOG_TRACE, "sample_size = %d sample_count = %d\n", sc->sample_size, entries);
1993 sc->sample_count = entries;
1997 if (field_size != 4 && field_size != 8 && field_size != 16 && field_size != 32) {
1998 av_log(c->fc, AV_LOG_ERROR, "Invalid sample field size %d\n", field_size);
1999 return AVERROR_INVALIDDATA;
2004 if (entries >= UINT_MAX / sizeof(int) || entries >= (UINT_MAX - 4) / field_size)
2005 return AVERROR_INVALIDDATA;
2006 sc->sample_sizes = av_malloc(entries * sizeof(int));
2007 if (!sc->sample_sizes)
2008 return AVERROR(ENOMEM);
2010 num_bytes = (entries*field_size+4)>>3;
2012 buf = av_malloc(num_bytes+AV_INPUT_BUFFER_PADDING_SIZE);
2014 av_freep(&sc->sample_sizes);
2015 return AVERROR(ENOMEM);
2018 ret = ffio_read_size(pb, buf, num_bytes);
2020 av_freep(&sc->sample_sizes);
2025 init_get_bits(&gb, buf, 8*num_bytes);
2027 for (i = 0; i < entries && !pb->eof_reached; i++) {
2028 sc->sample_sizes[i] = get_bits_long(&gb, field_size);
2029 sc->data_size += sc->sample_sizes[i];
2032 sc->sample_count = i;
2036 if (pb->eof_reached)
2042 static int mov_read_stts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2045 MOVStreamContext *sc;
2046 unsigned int i, entries;
2048 int64_t total_sample_count=0;
2050 if (c->fc->nb_streams < 1)
2052 st = c->fc->streams[c->fc->nb_streams-1];
2055 avio_r8(pb); /* version */
2056 avio_rb24(pb); /* flags */
2057 entries = avio_rb32(pb);
2059 av_log(c->fc, AV_LOG_TRACE, "track[%i].stts.entries = %i\n",
2060 c->fc->nb_streams-1, entries);
2064 if (entries >= UINT_MAX / sizeof(*sc->stts_data))
2065 return AVERROR(EINVAL);
2067 av_free(sc->stts_data);
2068 sc->stts_data = av_malloc(entries * sizeof(*sc->stts_data));
2070 return AVERROR(ENOMEM);
2072 for (i = 0; i < entries && !pb->eof_reached; i++) {
2073 int sample_duration;
2076 sample_count=avio_rb32(pb);
2077 sample_duration = avio_rb32(pb);
2078 if (sample_count < 0) {
2079 av_log(c->fc, AV_LOG_ERROR, "Invalid sample_count=%d\n", sample_count);
2080 return AVERROR_INVALIDDATA;
2082 sc->stts_data[i].count= sample_count;
2083 sc->stts_data[i].duration= sample_duration;
2085 av_log(c->fc, AV_LOG_TRACE, "sample_count=%d, sample_duration=%d\n",
2086 sample_count, sample_duration);
2088 duration+=(int64_t)sample_duration*sample_count;
2089 total_sample_count+=sample_count;
2094 if (pb->eof_reached)
2097 st->nb_frames= total_sample_count;
2099 st->duration= duration;
2100 sc->track_end = duration;
2104 static int mov_read_ctts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2107 MOVStreamContext *sc;
2108 unsigned int i, entries;
2110 if (c->fc->nb_streams < 1)
2112 st = c->fc->streams[c->fc->nb_streams-1];
2115 avio_r8(pb); /* version */
2116 avio_rb24(pb); /* flags */
2117 entries = avio_rb32(pb);
2119 av_log(c->fc, AV_LOG_TRACE, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
2121 av_freep(&sc->ctts_data);
2125 if (entries >= UINT_MAX / sizeof(*sc->ctts_data))
2126 return AVERROR_INVALIDDATA;
2127 sc->ctts_data = av_realloc(NULL, entries * sizeof(*sc->ctts_data));
2129 return AVERROR(ENOMEM);
2131 for (i = 0; i < entries && !pb->eof_reached; i++) {
2132 int count =avio_rb32(pb);
2133 int duration =avio_rb32(pb);
2135 sc->ctts_data[i].count = count;
2136 sc->ctts_data[i].duration= duration;
2138 sc->dts_shift = FFMAX(sc->dts_shift, -duration);
2143 if (pb->eof_reached)
2146 av_log(c->fc, AV_LOG_TRACE, "dts shift %d\n", sc->dts_shift);
2151 static int mov_read_sbgp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2154 MOVStreamContext *sc;
2155 unsigned int i, entries;
2157 uint32_t grouping_type;
2159 if (c->fc->nb_streams < 1)
2161 st = c->fc->streams[c->fc->nb_streams-1];
2164 version = avio_r8(pb); /* version */
2165 avio_rb24(pb); /* flags */
2166 grouping_type = avio_rl32(pb);
2167 if (grouping_type != MKTAG( 'r','a','p',' '))
2168 return 0; /* only support 'rap ' grouping */
2170 avio_rb32(pb); /* grouping_type_parameter */
2172 entries = avio_rb32(pb);
2175 if (entries >= UINT_MAX / sizeof(*sc->rap_group))
2176 return AVERROR_INVALIDDATA;
2177 sc->rap_group = av_malloc(entries * sizeof(*sc->rap_group));
2179 return AVERROR(ENOMEM);
2181 for (i = 0; i < entries && !pb->eof_reached; i++) {
2182 sc->rap_group[i].count = avio_rb32(pb); /* sample_count */
2183 sc->rap_group[i].index = avio_rb32(pb); /* group_description_index */
2186 sc->rap_group_count = i;
2188 return pb->eof_reached ? AVERROR_EOF : 0;
2191 static void mov_build_index(MOVContext *mov, AVStream *st)
2193 MOVStreamContext *sc = st->priv_data;
2194 int64_t current_offset;
2195 int64_t current_dts = 0;
2196 unsigned int stts_index = 0;
2197 unsigned int stsc_index = 0;
2198 unsigned int stss_index = 0;
2199 unsigned int stps_index = 0;
2201 uint64_t stream_size = 0;
2203 /* adjust first dts according to edit list */
2204 if (sc->time_offset && mov->time_scale > 0) {
2205 if (sc->time_offset < 0)
2206 sc->time_offset = av_rescale(sc->time_offset, sc->time_scale, mov->time_scale);
2207 current_dts = -sc->time_offset;
2208 if (sc->ctts_data && sc->stts_data && sc->stts_data[0].duration &&
2209 sc->ctts_data[0].duration / sc->stts_data[0].duration > 16) {
2210 /* more than 16 frames delay, dts are likely wrong
2211 this happens with files created by iMovie */
2213 st->codec->has_b_frames = 1;
2217 /* only use old uncompressed audio chunk demuxing when stts specifies it */
2218 if (!(st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
2219 sc->stts_count == 1 && sc->stts_data[0].duration == 1)) {
2220 unsigned int current_sample = 0;
2221 unsigned int stts_sample = 0;
2222 unsigned int sample_size;
2223 unsigned int distance = 0;
2224 unsigned int rap_group_index = 0;
2225 unsigned int rap_group_sample = 0;
2226 int rap_group_present = sc->rap_group_count && sc->rap_group;
2227 int key_off = (sc->keyframes && sc->keyframes[0] > 0) || (sc->stps_data && sc->stps_data[0] > 0);
2229 current_dts -= sc->dts_shift;
2231 if (!sc->sample_count)
2233 if (sc->sample_count >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries)
2235 if (av_reallocp_array(&st->index_entries,
2236 st->nb_index_entries + sc->sample_count,
2237 sizeof(*st->index_entries)) < 0) {
2238 st->nb_index_entries = 0;
2241 st->index_entries_allocated_size = (st->nb_index_entries + sc->sample_count) * sizeof(*st->index_entries);
2243 for (i = 0; i < sc->chunk_count; i++) {
2244 current_offset = sc->chunk_offsets[i];
2245 while (stsc_index + 1 < sc->stsc_count &&
2246 i + 1 == sc->stsc_data[stsc_index + 1].first)
2248 for (j = 0; j < sc->stsc_data[stsc_index].count; j++) {
2250 if (current_sample >= sc->sample_count) {
2251 av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
2255 if (!sc->keyframe_absent && (!sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index])) {
2257 if (stss_index + 1 < sc->keyframe_count)
2259 } else if (sc->stps_count && current_sample+key_off == sc->stps_data[stps_index]) {
2261 if (stps_index + 1 < sc->stps_count)
2264 if (rap_group_present && rap_group_index < sc->rap_group_count) {
2265 if (sc->rap_group[rap_group_index].index > 0)
2267 if (++rap_group_sample == sc->rap_group[rap_group_index].count) {
2268 rap_group_sample = 0;
2274 sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
2275 if (sc->pseudo_stream_id == -1 ||
2276 sc->stsc_data[stsc_index].id - 1 == sc->pseudo_stream_id) {
2277 AVIndexEntry *e = &st->index_entries[st->nb_index_entries++];
2278 e->pos = current_offset;
2279 e->timestamp = current_dts;
2280 e->size = sample_size;
2281 e->min_distance = distance;
2282 e->flags = keyframe ? AVINDEX_KEYFRAME : 0;
2283 av_log(mov->fc, AV_LOG_TRACE, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
2284 "size %d, distance %d, keyframe %d\n", st->index, current_sample,
2285 current_offset, current_dts, sample_size, distance, keyframe);
2288 current_offset += sample_size;
2289 stream_size += sample_size;
2290 current_dts += sc->stts_data[stts_index].duration;
2294 if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
2300 if (st->duration > 0)
2301 st->codec->bit_rate = stream_size*8*sc->time_scale/st->duration;
2303 unsigned chunk_samples, total = 0;
2305 // compute total chunk count
2306 for (i = 0; i < sc->stsc_count; i++) {
2307 unsigned count, chunk_count;
2309 chunk_samples = sc->stsc_data[i].count;
2310 if (i != sc->stsc_count - 1 &&
2311 sc->samples_per_frame && chunk_samples % sc->samples_per_frame) {
2312 av_log(mov->fc, AV_LOG_ERROR, "error unaligned chunk\n");
2316 if (sc->samples_per_frame >= 160) { // gsm
2317 count = chunk_samples / sc->samples_per_frame;
2318 } else if (sc->samples_per_frame > 1) {
2319 unsigned samples = (1024/sc->samples_per_frame)*sc->samples_per_frame;
2320 count = (chunk_samples+samples-1) / samples;
2322 count = (chunk_samples+1023) / 1024;
2325 if (i < sc->stsc_count - 1)
2326 chunk_count = sc->stsc_data[i+1].first - sc->stsc_data[i].first;
2328 chunk_count = sc->chunk_count - (sc->stsc_data[i].first - 1);
2329 total += chunk_count * count;
2332 av_log(mov->fc, AV_LOG_TRACE, "chunk count %d\n", total);
2333 if (total >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries)
2335 if (av_reallocp_array(&st->index_entries,
2336 st->nb_index_entries + total,
2337 sizeof(*st->index_entries)) < 0) {
2338 st->nb_index_entries = 0;
2341 st->index_entries_allocated_size = (st->nb_index_entries + total) * sizeof(*st->index_entries);
2344 for (i = 0; i < sc->chunk_count; i++) {
2345 current_offset = sc->chunk_offsets[i];
2346 if (stsc_index + 1 < sc->stsc_count &&
2347 i + 1 == sc->stsc_data[stsc_index + 1].first)
2349 chunk_samples = sc->stsc_data[stsc_index].count;
2351 while (chunk_samples > 0) {
2353 unsigned size, samples;
2355 if (sc->samples_per_frame > 1 && !sc->bytes_per_frame) {
2356 avpriv_request_sample(mov->fc,
2357 "Zero bytes per frame, but %d samples per frame",
2358 sc->samples_per_frame);
2362 if (sc->samples_per_frame >= 160) { // gsm
2363 samples = sc->samples_per_frame;
2364 size = sc->bytes_per_frame;
2366 if (sc->samples_per_frame > 1) {
2367 samples = FFMIN((1024 / sc->samples_per_frame)*
2368 sc->samples_per_frame, chunk_samples);
2369 size = (samples / sc->samples_per_frame) * sc->bytes_per_frame;
2371 samples = FFMIN(1024, chunk_samples);
2372 size = samples * sc->sample_size;
2376 if (st->nb_index_entries >= total) {
2377 av_log(mov->fc, AV_LOG_ERROR, "wrong chunk count %d\n", total);
2380 e = &st->index_entries[st->nb_index_entries++];
2381 e->pos = current_offset;
2382 e->timestamp = current_dts;
2384 e->min_distance = 0;
2385 e->flags = AVINDEX_KEYFRAME;
2386 av_log(mov->fc, AV_LOG_TRACE, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", "
2387 "size %d, duration %d\n", st->index, i, current_offset, current_dts,
2390 current_offset += size;
2391 current_dts += samples;
2392 chunk_samples -= samples;
2398 static int mov_open_dref(AVIOContext **pb, char *src, MOVDref *ref,
2399 AVIOInterruptCB *int_cb)
2401 /* try relative path, we do not try the absolute because it can leak information about our
2402 system to an attacker */
2403 if (ref->nlvl_to > 0 && ref->nlvl_from > 0) {
2404 char filename[1024];
2408 /* find a source dir */
2409 src_path = strrchr(src, '/');
2415 /* find a next level down to target */
2416 for (i = 0, l = strlen(ref->path) - 1; l >= 0; l--)
2417 if (ref->path[l] == '/') {
2418 if (i == ref->nlvl_to - 1)
2424 /* compose filename if next level down to target was found */
2425 if (i == ref->nlvl_to - 1 && src_path - src < sizeof(filename)) {
2426 memcpy(filename, src, src_path - src);
2427 filename[src_path - src] = 0;
2429 for (i = 1; i < ref->nlvl_from; i++)
2430 av_strlcat(filename, "../", 1024);
2432 av_strlcat(filename, ref->path + l + 1, 1024);
2434 if (!avio_open2(pb, filename, AVIO_FLAG_READ, int_cb, NULL))
2439 return AVERROR(ENOENT);
2442 static int mov_read_trak(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2445 MOVStreamContext *sc;
2448 st = avformat_new_stream(c->fc, NULL);
2449 if (!st) return AVERROR(ENOMEM);
2450 st->id = c->fc->nb_streams;
2451 sc = av_mallocz(sizeof(MOVStreamContext));
2452 if (!sc) return AVERROR(ENOMEM);
2455 st->codec->codec_type = AVMEDIA_TYPE_DATA;
2456 sc->ffindex = st->index;
2458 if ((ret = mov_read_default(c, pb, atom)) < 0)
2462 if (sc->chunk_count && (!sc->stts_count || !sc->stsc_count ||
2463 (!sc->sample_size && !sc->sample_count))) {
2464 av_log(c->fc, AV_LOG_ERROR, "stream %d, missing mandatory atoms, broken header\n",
2469 if (sc->time_scale <= 0) {
2470 av_log(c->fc, AV_LOG_WARNING, "stream %d, timescale not set\n", st->index);
2471 sc->time_scale = c->time_scale;
2472 if (sc->time_scale <= 0)
2476 avpriv_set_pts_info(st, 64, 1, sc->time_scale);
2478 mov_build_index(c, st);
2480 if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) {
2481 MOVDref *dref = &sc->drefs[sc->dref_id - 1];
2482 if (mov_open_dref(&sc->pb, c->fc->filename, dref, &c->fc->interrupt_callback) < 0)
2483 av_log(c->fc, AV_LOG_ERROR,
2484 "stream %d, error opening alias: path='%s', dir='%s', "
2485 "filename='%s', volume='%s', nlvl_from=%d, nlvl_to=%d\n",
2486 st->index, dref->path, dref->dir, dref->filename,
2487 dref->volume, dref->nlvl_from, dref->nlvl_to);
2491 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2492 if (!st->sample_aspect_ratio.num &&
2493 (st->codec->width != sc->width || st->codec->height != sc->height)) {
2494 st->sample_aspect_ratio = av_d2q(((double)st->codec->height * sc->width) /
2495 ((double)st->codec->width * sc->height), INT_MAX);
2499 // done for ai5q, ai52, ai55, ai1q, ai12 and ai15.
2500 if (!st->codec->extradata_size && st->codec->codec_id == AV_CODEC_ID_H264 &&
2501 TAG_IS_AVCI(st->codec->codec_tag)) {
2502 ret = ff_generate_avci_extradata(st);
2507 switch (st->codec->codec_id) {
2508 #if CONFIG_H261_DECODER
2509 case AV_CODEC_ID_H261:
2511 #if CONFIG_H263_DECODER
2512 case AV_CODEC_ID_H263:
2514 #if CONFIG_MPEG4_DECODER
2515 case AV_CODEC_ID_MPEG4:
2517 st->codec->width = 0; /* let decoder init width/height */
2518 st->codec->height= 0;
2522 /* Do not need those anymore. */
2523 av_freep(&sc->chunk_offsets);
2524 av_freep(&sc->stsc_data);
2525 av_freep(&sc->sample_sizes);
2526 av_freep(&sc->keyframes);
2527 av_freep(&sc->stts_data);
2528 av_freep(&sc->stps_data);
2529 av_freep(&sc->rap_group);
2534 static int mov_read_ilst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2537 c->itunes_metadata = 1;
2538 ret = mov_read_default(c, pb, atom);
2539 c->itunes_metadata = 0;
2543 static int mov_read_replaygain(MOVContext *c, AVIOContext *pb, int size)
2545 int64_t end = avio_tell(pb) + size;
2546 uint8_t *key = NULL, *val = NULL;
2549 for (i = 0; i < 2; i++) {
2554 if (end - avio_tell(pb) <= 12)
2557 len = avio_rb32(pb);
2558 tag = avio_rl32(pb);
2559 avio_skip(pb, 4); // flags
2561 if (len < 12 || len - 12 > end - avio_tell(pb))
2565 if (tag == MKTAG('n', 'a', 'm', 'e'))
2567 else if (tag == MKTAG('d', 'a', 't', 'a') && len > 4) {
2574 *p = av_malloc(len + 1);
2577 ret = ffio_read_size(pb, *p, len);
2586 av_dict_set(&c->fc->metadata, key, val,
2587 AV_DICT_DONT_STRDUP_KEY | AV_DICT_DONT_STRDUP_VAL);
2591 avio_seek(pb, end, SEEK_SET);
2597 static int mov_read_custom(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2599 int64_t end = avio_tell(pb) + atom.size;
2605 len = avio_rb32(pb);
2606 tag = avio_rl32(pb);
2608 if (len > atom.size)
2611 if (tag == MKTAG('m', 'e', 'a', 'n') && len > 12) {
2612 uint8_t domain[128];
2615 avio_skip(pb, 4); // flags
2618 domain_len = avio_get_str(pb, len, domain, sizeof(domain));
2619 avio_skip(pb, len - domain_len);
2620 if (!strcmp(domain, "org.hydrogenaudio.replaygain"))
2621 return mov_read_replaygain(c, pb, end - avio_tell(pb));
2625 av_log(c->fc, AV_LOG_VERBOSE,
2626 "Unhandled or malformed custom metadata of size %"PRId64"\n", atom.size);
2630 static int mov_read_meta(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2632 while (atom.size > 8) {
2633 uint32_t tag = avio_rl32(pb);
2635 if (tag == MKTAG('h','d','l','r')) {
2636 avio_seek(pb, -8, SEEK_CUR);
2638 return mov_read_default(c, pb, atom);
2644 static int mov_read_tkhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2649 int64_t disp_transform[2];
2650 int display_matrix[3][3];
2652 MOVStreamContext *sc;
2656 if (c->fc->nb_streams < 1)
2658 st = c->fc->streams[c->fc->nb_streams-1];
2661 version = avio_r8(pb);
2662 flags = avio_rb24(pb);
2663 st->disposition |= (flags & MOV_TKHD_FLAG_ENABLED) ? AV_DISPOSITION_DEFAULT : 0;
2669 avio_rb32(pb); /* creation time */
2670 avio_rb32(pb); /* modification time */
2672 st->id = (int)avio_rb32(pb); /* track id (NOT 0 !)*/
2673 avio_rb32(pb); /* reserved */
2675 /* highlevel (considering edits) duration in movie timebase */
2676 (version == 1) ? avio_rb64(pb) : avio_rb32(pb);
2677 avio_rb32(pb); /* reserved */
2678 avio_rb32(pb); /* reserved */
2680 avio_rb16(pb); /* layer */
2681 avio_rb16(pb); /* alternate group */
2682 avio_rb16(pb); /* volume */
2683 avio_rb16(pb); /* reserved */
2685 //read in the display matrix (outlined in ISO 14496-12, Section 6.2.2)
2686 // they're kept in fixed point format through all calculations
2687 // save u,v,z to store the whole matrix in the AV_PKT_DATA_DISPLAYMATRIX
2688 // side data, but the scale factor is not needed to calculate aspect ratio
2689 for (i = 0; i < 3; i++) {
2690 display_matrix[i][0] = avio_rb32(pb); // 16.16 fixed point
2691 display_matrix[i][1] = avio_rb32(pb); // 16.16 fixed point
2692 display_matrix[i][2] = avio_rb32(pb); // 2.30 fixed point
2695 width = avio_rb32(pb); // 16.16 fixed point track width
2696 height = avio_rb32(pb); // 16.16 fixed point track height
2697 sc->width = width >> 16;
2698 sc->height = height >> 16;
2700 // save the matrix when it is not the default identity
2701 if (display_matrix[0][0] != (1 << 16) ||
2702 display_matrix[1][1] != (1 << 16) ||
2703 display_matrix[2][2] != (1 << 30) ||
2704 display_matrix[0][1] || display_matrix[0][2] ||
2705 display_matrix[1][0] || display_matrix[1][2] ||
2706 display_matrix[2][0] || display_matrix[2][1]) {
2709 av_freep(&sc->display_matrix);
2710 sc->display_matrix = av_malloc(sizeof(int32_t) * 9);
2711 if (!sc->display_matrix)
2712 return AVERROR(ENOMEM);
2714 for (i = 0; i < 3; i++)
2715 for (j = 0; j < 3; j++)
2716 sc->display_matrix[i * 3 + j] = display_matrix[i][j];
2719 // transform the display width/height according to the matrix
2720 // skip this when the display matrix is the identity one
2721 // to keep the same scale, use [width height 1<<16]
2722 if (width && height && sc->display_matrix) {
2723 for (i = 0; i < 2; i++)
2725 (int64_t) width * display_matrix[0][i] +
2726 (int64_t) height * display_matrix[1][i] +
2727 ((int64_t) display_matrix[2][i] << 16);
2729 //sample aspect ratio is new width/height divided by old width/height
2730 if (disp_transform[0] > 0 && disp_transform[1] > 0)
2731 st->sample_aspect_ratio = av_d2q(
2732 ((double) disp_transform[0] * height) /
2733 ((double) disp_transform[1] * width), INT_MAX);
2738 static int mov_read_tfhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2740 MOVFragment *frag = &c->fragment;
2741 MOVTrackExt *trex = NULL;
2742 int flags, track_id, i;
2744 avio_r8(pb); /* version */
2745 flags = avio_rb24(pb);
2747 track_id = avio_rb32(pb);
2749 return AVERROR_INVALIDDATA;
2750 frag->track_id = track_id;
2751 for (i = 0; i < c->trex_count; i++)
2752 if (c->trex_data[i].track_id == frag->track_id) {
2753 trex = &c->trex_data[i];
2757 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding trex\n");
2758 return AVERROR_INVALIDDATA;
2761 frag->base_data_offset = flags & MOV_TFHD_BASE_DATA_OFFSET ?
2762 avio_rb64(pb) : flags & MOV_TFHD_DEFAULT_BASE_IS_MOOF ?
2763 frag->moof_offset : frag->implicit_offset;
2764 frag->stsd_id = flags & MOV_TFHD_STSD_ID ? avio_rb32(pb) : trex->stsd_id;
2766 frag->duration = flags & MOV_TFHD_DEFAULT_DURATION ?
2767 avio_rb32(pb) : trex->duration;
2768 frag->size = flags & MOV_TFHD_DEFAULT_SIZE ?
2769 avio_rb32(pb) : trex->size;
2770 frag->flags = flags & MOV_TFHD_DEFAULT_FLAGS ?
2771 avio_rb32(pb) : trex->flags;
2772 av_log(c->fc, AV_LOG_TRACE, "frag flags 0x%x\n", frag->flags);
2776 static int mov_read_chap(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2778 c->chapter_track = avio_rb32(pb);
2782 static int mov_read_trex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2787 if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data))
2788 return AVERROR_INVALIDDATA;
2789 if ((err = av_reallocp_array(&c->trex_data, c->trex_count + 1,
2790 sizeof(*c->trex_data))) < 0) {
2794 trex = &c->trex_data[c->trex_count++];
2795 avio_r8(pb); /* version */
2796 avio_rb24(pb); /* flags */
2797 trex->track_id = avio_rb32(pb);
2798 trex->stsd_id = avio_rb32(pb);
2799 trex->duration = avio_rb32(pb);
2800 trex->size = avio_rb32(pb);
2801 trex->flags = avio_rb32(pb);
2805 static int mov_read_tfdt(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2807 MOVFragment *frag = &c->fragment;
2808 AVStream *st = NULL;
2809 MOVStreamContext *sc;
2812 for (i = 0; i < c->fc->nb_streams; i++) {
2813 if (c->fc->streams[i]->id == frag->track_id) {
2814 st = c->fc->streams[i];
2819 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id);
2820 return AVERROR_INVALIDDATA;
2823 if (sc->pseudo_stream_id + 1 != frag->stsd_id)
2825 version = avio_r8(pb);
2826 avio_rb24(pb); /* flags */
2828 sc->track_end = avio_rb64(pb);
2830 sc->track_end = avio_rb32(pb);
2835 static int mov_read_trun(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2837 MOVFragment *frag = &c->fragment;
2838 AVStream *st = NULL;
2839 MOVStreamContext *sc;
2843 int data_offset = 0;
2844 unsigned entries, first_sample_flags = frag->flags;
2845 int flags, distance, i, err;
2847 for (i = 0; i < c->fc->nb_streams; i++) {
2848 if (c->fc->streams[i]->id == frag->track_id) {
2849 st = c->fc->streams[i];
2854 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id);
2855 return AVERROR_INVALIDDATA;
2858 if (sc->pseudo_stream_id+1 != frag->stsd_id)
2860 avio_r8(pb); /* version */
2861 flags = avio_rb24(pb);
2862 entries = avio_rb32(pb);
2863 av_log(c->fc, AV_LOG_TRACE, "flags 0x%x entries %d\n", flags, entries);
2865 /* Always assume the presence of composition time offsets.
2866 * Without this assumption, for instance, we cannot deal with a track in fragmented movies that meet the following.
2867 * 1) in the initial movie, there are no samples.
2868 * 2) in the first movie fragment, there is only one sample without composition time offset.
2869 * 3) in the subsequent movie fragments, there are samples with composition time offset. */
2870 if (!sc->ctts_count && sc->sample_count)
2872 /* Complement ctts table if moov atom doesn't have ctts atom. */
2873 ctts_data = av_realloc(NULL, sizeof(*sc->ctts_data));
2875 return AVERROR(ENOMEM);
2876 sc->ctts_data = ctts_data;
2877 sc->ctts_data[sc->ctts_count].count = sc->sample_count;
2878 sc->ctts_data[sc->ctts_count].duration = 0;
2881 if ((uint64_t)entries+sc->ctts_count >= UINT_MAX/sizeof(*sc->ctts_data))
2882 return AVERROR_INVALIDDATA;
2883 if ((err = av_reallocp_array(&sc->ctts_data, entries + sc->ctts_count,
2884 sizeof(*sc->ctts_data))) < 0) {
2888 if (flags & MOV_TRUN_DATA_OFFSET) data_offset = avio_rb32(pb);
2889 if (flags & MOV_TRUN_FIRST_SAMPLE_FLAGS) first_sample_flags = avio_rb32(pb);
2890 dts = sc->track_end - sc->time_offset;
2891 offset = frag->base_data_offset + data_offset;
2893 av_log(c->fc, AV_LOG_TRACE, "first sample flags 0x%x\n", first_sample_flags);
2894 for (i = 0; i < entries && !pb->eof_reached; i++) {
2895 unsigned sample_size = frag->size;
2896 int sample_flags = i ? frag->flags : first_sample_flags;
2897 unsigned sample_duration = frag->duration;
2900 if (flags & MOV_TRUN_SAMPLE_DURATION) sample_duration = avio_rb32(pb);
2901 if (flags & MOV_TRUN_SAMPLE_SIZE) sample_size = avio_rb32(pb);
2902 if (flags & MOV_TRUN_SAMPLE_FLAGS) sample_flags = avio_rb32(pb);
2903 sc->ctts_data[sc->ctts_count].count = 1;
2904 sc->ctts_data[sc->ctts_count].duration = (flags & MOV_TRUN_SAMPLE_CTS) ?
2907 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
2911 !(sample_flags & (MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC |
2912 MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES));
2915 av_add_index_entry(st, offset, dts, sample_size, distance,
2916 keyframe ? AVINDEX_KEYFRAME : 0);
2917 av_log(c->fc, AV_LOG_TRACE, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
2918 "size %d, distance %d, keyframe %d\n", st->index, sc->sample_count+i,
2919 offset, dts, sample_size, distance, keyframe);
2921 dts += sample_duration;
2922 offset += sample_size;
2923 sc->data_size += sample_size;
2926 if (pb->eof_reached)
2929 frag->implicit_offset = offset;
2930 st->duration = sc->track_end = dts + sc->time_offset;
2934 /* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
2935 /* like the files created with Adobe Premiere 5.0, for samples see */
2936 /* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
2937 static int mov_read_wide(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2942 return 0; /* continue */
2943 if (avio_rb32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
2944 avio_skip(pb, atom.size - 4);
2947 atom.type = avio_rl32(pb);
2949 if (atom.type != MKTAG('m','d','a','t')) {
2950 avio_skip(pb, atom.size);
2953 err = mov_read_mdat(c, pb, atom);
2957 static int mov_read_cmov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2962 uint8_t *moov_data; /* uncompressed data */
2963 long cmov_len, moov_len;
2966 avio_rb32(pb); /* dcom atom */
2967 if (avio_rl32(pb) != MKTAG('d','c','o','m'))
2968 return AVERROR_INVALIDDATA;
2969 if (avio_rl32(pb) != MKTAG('z','l','i','b')) {
2970 av_log(c->fc, AV_LOG_ERROR, "unknown compression for cmov atom !");
2971 return AVERROR_INVALIDDATA;
2973 avio_rb32(pb); /* cmvd atom */
2974 if (avio_rl32(pb) != MKTAG('c','m','v','d'))
2975 return AVERROR_INVALIDDATA;
2976 moov_len = avio_rb32(pb); /* uncompressed size */
2977 cmov_len = atom.size - 6 * 4;
2979 cmov_data = av_malloc(cmov_len);
2981 return AVERROR(ENOMEM);
2982 moov_data = av_malloc(moov_len);
2985 return AVERROR(ENOMEM);
2987 ret = ffio_read_size(pb, cmov_data, cmov_len);
2989 goto free_and_return;
2991 if (uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
2992 goto free_and_return;
2993 if (ffio_init_context(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
2994 goto free_and_return;
2995 atom.type = MKTAG('m','o','o','v');
2996 atom.size = moov_len;
2997 ret = mov_read_default(c, &ctx, atom);
3003 av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
3004 return AVERROR(ENOSYS);
3008 /* edit list atom */
3009 static int mov_read_elst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
3011 MOVStreamContext *sc;
3012 int i, edit_count, version;
3014 if (c->fc->nb_streams < 1)
3016 sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
3018 version = avio_r8(pb); /* version */
3019 avio_rb24(pb); /* flags */
3020 edit_count = avio_rb32(pb); /* entries */
3022 if ((uint64_t)edit_count*12+8 > atom.size)
3023 return AVERROR_INVALIDDATA;
3025 for (i=0; i<edit_count; i++){
3029 duration = avio_rb64(pb);
3030 time = avio_rb64(pb);
3032 duration = avio_rb32(pb); /* segment duration */
3033 time = (int32_t)avio_rb32(pb); /* media time */
3035 avio_rb32(pb); /* Media rate */
3036 if (i == 0 && time >= -1) {
3037 sc->time_offset = time != -1 ? time : -duration;
3042 av_log(c->fc, AV_LOG_WARNING, "multiple edit list entries, "
3043 "a/v desync might occur, patch welcome\n");
3045 av_log(c->fc, AV_LOG_TRACE, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, edit_count);
3049 static const MOVParseTableEntry mov_default_parse_table[] = {
3050 { MKTAG('a','v','s','s'), mov_read_extradata },
3051 { MKTAG('c','h','p','l'), mov_read_chpl },
3052 { MKTAG('c','o','6','4'), mov_read_stco },
3053 { MKTAG('c','o','l','r'), mov_read_colr },
3054 { MKTAG('c','t','t','s'), mov_read_ctts }, /* composition time to sample */
3055 { MKTAG('d','i','n','f'), mov_read_default },
3056 { MKTAG('d','r','e','f'), mov_read_dref },
3057 { MKTAG('e','d','t','s'), mov_read_default },
3058 { MKTAG('e','l','s','t'), mov_read_elst },
3059 { MKTAG('e','n','d','a'), mov_read_enda },
3060 { MKTAG('f','i','e','l'), mov_read_fiel },
3061 { MKTAG('f','t','y','p'), mov_read_ftyp },
3062 { MKTAG('g','l','b','l'), mov_read_glbl },
3063 { MKTAG('h','d','l','r'), mov_read_hdlr },
3064 { MKTAG('i','l','s','t'), mov_read_ilst },
3065 { MKTAG('j','p','2','h'), mov_read_extradata },
3066 { MKTAG('m','d','a','t'), mov_read_mdat },
3067 { MKTAG('m','d','h','d'), mov_read_mdhd },
3068 { MKTAG('m','d','i','a'), mov_read_default },
3069 { MKTAG('m','e','t','a'), mov_read_meta },
3070 { MKTAG('m','i','n','f'), mov_read_default },
3071 { MKTAG('m','o','o','f'), mov_read_moof },
3072 { MKTAG('m','o','o','v'), mov_read_moov },
3073 { MKTAG('m','v','e','x'), mov_read_default },
3074 { MKTAG('m','v','h','d'), mov_read_mvhd },
3075 { MKTAG('S','M','I',' '), mov_read_smi }, /* Sorenson extension ??? */
3076 { MKTAG('a','l','a','c'), mov_read_extradata }, /* alac specific atom */
3077 { MKTAG('a','v','c','C'), mov_read_glbl },
3078 { MKTAG('p','a','s','p'), mov_read_pasp },
3079 { MKTAG('s','t','b','l'), mov_read_default },
3080 { MKTAG('s','t','c','o'), mov_read_stco },
3081 { MKTAG('s','t','p','s'), mov_read_stps },
3082 { MKTAG('s','t','r','f'), mov_read_strf },
3083 { MKTAG('s','t','s','c'), mov_read_stsc },
3084 { MKTAG('s','t','s','d'), mov_read_stsd }, /* sample description */
3085 { MKTAG('s','t','s','s'), mov_read_stss }, /* sync sample */
3086 { MKTAG('s','t','s','z'), mov_read_stsz }, /* sample size */
3087 { MKTAG('s','t','t','s'), mov_read_stts },
3088 { MKTAG('s','t','z','2'), mov_read_stsz }, /* compact sample size */
3089 { MKTAG('t','k','h','d'), mov_read_tkhd }, /* track header */
3090 { MKTAG('t','f','d','t'), mov_read_tfdt },
3091 { MKTAG('t','f','h','d'), mov_read_tfhd }, /* track fragment header */
3092 { MKTAG('t','r','a','k'), mov_read_trak },
3093 { MKTAG('t','r','a','f'), mov_read_default },
3094 { MKTAG('t','r','e','f'), mov_read_default },
3095 { MKTAG('c','h','a','p'), mov_read_chap },
3096 { MKTAG('t','r','e','x'), mov_read_trex },
3097 { MKTAG('t','r','u','n'), mov_read_trun },
3098 { MKTAG('u','d','t','a'), mov_read_default },
3099 { MKTAG('w','a','v','e'), mov_read_wave },
3100 { MKTAG('e','s','d','s'), mov_read_esds },
3101 { MKTAG('d','a','c','3'), mov_read_dac3 }, /* AC-3 info */
3102 { MKTAG('d','e','c','3'), mov_read_dec3 }, /* EAC-3 info */
3103 { MKTAG('w','i','d','e'), mov_read_wide }, /* place holder */
3104 { MKTAG('w','f','e','x'), mov_read_wfex },
3105 { MKTAG('c','m','o','v'), mov_read_cmov },
3106 { MKTAG('c','h','a','n'), mov_read_chan }, /* channel layout */
3107 { MKTAG('d','v','c','1'), mov_read_dvc1 },
3108 { MKTAG('s','b','g','p'), mov_read_sbgp },
3109 { MKTAG('h','v','c','C'), mov_read_glbl },
3110 { MKTAG('-','-','-','-'), mov_read_custom },
3114 static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom)
3116 int64_t total_size = 0;
3121 atom.size = INT64_MAX;
3122 while (total_size + 8 < atom.size && !pb->eof_reached) {
3123 int (*parse)(MOVContext*, AVIOContext*, MOVAtom) = NULL;
3126 if (atom.size >= 8) {
3127 a.size = avio_rb32(pb);
3128 a.type = avio_rl32(pb);
3130 av_log(c->fc, AV_LOG_TRACE, "type: %08x '%.4s' parent:'%.4s' sz: %"PRId64" %"PRId64" %"PRId64"\n",
3131 a.type, (char*)&a.type, (char*)&atom.type, a.size, total_size, atom.size);
3133 if (a.size == 1) { /* 64 bit extended size */
3134 a.size = avio_rb64(pb) - 8;
3138 a.size = atom.size - total_size;
3145 a.size = FFMIN(a.size, atom.size - total_size);
3147 for (i = 0; mov_default_parse_table[i].type; i++)
3148 if (mov_default_parse_table[i].type == a.type) {
3149 parse = mov_default_parse_table[i].parse;
3153 // container is user data
3154 if (!parse && (atom.type == MKTAG('u','d','t','a') ||
3155 atom.type == MKTAG('i','l','s','t')))
3156 parse = mov_read_udta_string;
3158 if (!parse) { /* skip leaf atoms data */
3159 avio_skip(pb, a.size);
3161 int64_t start_pos = avio_tell(pb);
3163 int err = parse(c, pb, a);
3166 if (c->found_moov && c->found_mdat &&
3167 ((!pb->seekable || c->fc->flags & AVFMT_FLAG_IGNIDX) ||
3168 start_pos + a.size == avio_size(pb))) {
3169 if (!pb->seekable || c->fc->flags & AVFMT_FLAG_IGNIDX)
3170 c->next_root_atom = start_pos + a.size;
3173 left = a.size - avio_tell(pb) + start_pos;
3174 if (left > 0) /* skip garbage at atom end */
3175 avio_skip(pb, left);
3176 else if (left < 0) {
3177 av_log(c->fc, AV_LOG_WARNING,
3178 "overread end of atom '%.4s' by %"PRId64" bytes\n",
3179 (char*)&a.type, -left);
3180 avio_seek(pb, left, SEEK_CUR);
3184 total_size += a.size;
3187 if (total_size < atom.size && atom.size < 0x7ffff)
3188 avio_skip(pb, atom.size - total_size);
3193 static int mov_probe(AVProbeData *p)
3195 unsigned int offset;
3199 /* check file header */
3202 /* ignore invalid offset */
3203 if ((offset + 8) > (unsigned int)p->buf_size)
3205 tag = AV_RL32(p->buf + offset + 4);
3207 /* check for obvious tags */
3208 case MKTAG('j','P',' ',' '): /* jpeg 2000 signature */
3209 case MKTAG('m','o','o','v'):
3210 case MKTAG('m','d','a','t'):
3211 case MKTAG('p','n','o','t'): /* detect movs with preview pics like ew.mov and april.mov */
3212 case MKTAG('u','d','t','a'): /* Packet Video PVAuthor adds this and a lot of more junk */
3213 case MKTAG('f','t','y','p'):
3214 return AVPROBE_SCORE_MAX;
3215 /* those are more common words, so rate then a bit less */
3216 case MKTAG('e','d','i','w'): /* xdcam files have reverted first tags */
3217 case MKTAG('w','i','d','e'):
3218 case MKTAG('f','r','e','e'):
3219 case MKTAG('j','u','n','k'):
3220 case MKTAG('p','i','c','t'):
3221 return AVPROBE_SCORE_MAX - 5;
3222 case MKTAG(0x82,0x82,0x7f,0x7d):
3223 case MKTAG('s','k','i','p'):
3224 case MKTAG('u','u','i','d'):
3225 case MKTAG('p','r','f','l'):
3226 offset = AV_RB32(p->buf+offset) + offset;
3227 /* if we only find those cause probedata is too small at least rate them */
3228 score = AVPROBE_SCORE_EXTENSION;
3231 /* unrecognized tag */
3237 // must be done after parsing all trak because there's no order requirement
3238 static void mov_read_chapters(AVFormatContext *s)
3240 MOVContext *mov = s->priv_data;
3241 AVStream *st = NULL;
3242 MOVStreamContext *sc;
3246 for (i = 0; i < s->nb_streams; i++)
3247 if (s->streams[i]->id == mov->chapter_track) {
3252 av_log(s, AV_LOG_ERROR, "Referenced QT chapter track not found\n");
3256 st->discard = AVDISCARD_ALL;
3258 cur_pos = avio_tell(sc->pb);
3260 for (i = 0; i < st->nb_index_entries; i++) {
3261 AVIndexEntry *sample = &st->index_entries[i];
3262 int64_t end = i+1 < st->nb_index_entries ? st->index_entries[i+1].timestamp : st->duration;
3267 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
3268 av_log(s, AV_LOG_ERROR, "Chapter %d not found in file\n", i);
3272 // the first two bytes are the length of the title
3273 len = avio_rb16(sc->pb);
3274 if (len > sample->size-2)
3276 title_len = 2*len + 1;
3277 if (!(title = av_mallocz(title_len)))
3280 // The samples could theoretically be in any encoding if there's an encd
3281 // atom following, but in practice are only utf-8 or utf-16, distinguished
3282 // instead by the presence of a BOM
3286 ch = avio_rb16(sc->pb);
3288 avio_get_str16be(sc->pb, len, title, title_len);
3289 else if (ch == 0xfffe)
3290 avio_get_str16le(sc->pb, len, title, title_len);
3293 if (len == 1 || len == 2)
3296 avio_get_str(sc->pb, len - 2, title + 2, title_len - 2);
3300 avpriv_new_chapter(s, i, st->time_base, sample->timestamp, end, title);
3304 avio_seek(sc->pb, cur_pos, SEEK_SET);
3307 static int mov_read_close(AVFormatContext *s)
3309 MOVContext *mov = s->priv_data;
3312 for (i = 0; i < s->nb_streams; i++) {
3313 AVStream *st = s->streams[i];
3314 MOVStreamContext *sc = st->priv_data;
3316 av_freep(&sc->ctts_data);
3317 for (j = 0; j < sc->drefs_count; j++) {
3318 av_freep(&sc->drefs[j].path);
3319 av_freep(&sc->drefs[j].dir);
3321 av_freep(&sc->drefs);
3322 if (sc->pb && sc->pb != s->pb)
3325 av_freep(&sc->chunk_offsets);
3326 av_freep(&sc->stsc_data);
3327 av_freep(&sc->sample_sizes);
3328 av_freep(&sc->keyframes);
3329 av_freep(&sc->stts_data);
3330 av_freep(&sc->stps_data);
3331 av_freep(&sc->rap_group);
3332 av_freep(&sc->display_matrix);
3335 if (mov->dv_demux) {
3336 avformat_free_context(mov->dv_fctx);
3337 mov->dv_fctx = NULL;
3340 av_freep(&mov->trex_data);
3345 static int mov_read_header(AVFormatContext *s)
3347 MOVContext *mov = s->priv_data;
3348 AVIOContext *pb = s->pb;
3350 MOVAtom atom = { AV_RL32("root") };
3354 /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
3356 atom.size = avio_size(pb);
3358 atom.size = INT64_MAX;
3360 /* check MOV header */
3361 if ((err = mov_read_default(mov, pb, atom)) < 0) {
3362 av_log(s, AV_LOG_ERROR, "error reading header: %d\n", err);
3366 if (!mov->found_moov) {
3367 av_log(s, AV_LOG_ERROR, "moov atom not found\n");
3369 return AVERROR_INVALIDDATA;
3371 av_log(mov->fc, AV_LOG_TRACE, "on_parse_exit_offset=%"PRId64"\n", avio_tell(pb));
3373 if (pb->seekable && mov->chapter_track > 0)
3374 mov_read_chapters(s);
3376 for (i = 0; i < s->nb_streams; i++) {
3377 AVStream *st = s->streams[i];
3378 MOVStreamContext *sc = st->priv_data;
3380 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3381 if (st->codec->width <= 0 || st->codec->height <= 0) {
3382 st->codec->width = sc->width;
3383 st->codec->height = sc->height;
3385 if (st->codec->codec_id == AV_CODEC_ID_DVD_SUBTITLE) {
3386 if ((err = mov_rewrite_dvd_sub_extradata(st)) < 0)
3392 if (mov->trex_data) {
3393 for (i = 0; i < s->nb_streams; i++) {
3394 AVStream *st = s->streams[i];
3395 MOVStreamContext *sc = st->priv_data;
3396 if (st->duration > 0)
3397 st->codec->bit_rate = sc->data_size * 8 * sc->time_scale / st->duration;
3401 for (i = 0; i < s->nb_streams; i++) {
3402 AVStream *st = s->streams[i];
3403 MOVStreamContext *sc = st->priv_data;
3405 switch (st->codec->codec_type) {
3406 case AVMEDIA_TYPE_AUDIO:
3407 err = ff_replaygain_export(st, s->metadata);
3413 case AVMEDIA_TYPE_VIDEO:
3414 if (sc->display_matrix) {
3415 AVPacketSideData *sd, *tmp;
3417 tmp = av_realloc_array(st->side_data,
3418 st->nb_side_data + 1, sizeof(*tmp));
3420 return AVERROR(ENOMEM);
3422 st->side_data = tmp;
3425 sd = &st->side_data[st->nb_side_data - 1];
3426 sd->type = AV_PKT_DATA_DISPLAYMATRIX;
3427 sd->size = sizeof(int32_t) * 9;
3428 sd->data = (uint8_t*)sc->display_matrix;
3429 sc->display_matrix = NULL;
3438 static AVIndexEntry *mov_find_next_sample(AVFormatContext *s, AVStream **st)
3440 AVIndexEntry *sample = NULL;
3441 int64_t best_dts = INT64_MAX;
3443 for (i = 0; i < s->nb_streams; i++) {
3444 AVStream *avst = s->streams[i];
3445 MOVStreamContext *msc = avst->priv_data;
3446 if (msc->pb && msc->current_sample < avst->nb_index_entries) {
3447 AVIndexEntry *current_sample = &avst->index_entries[msc->current_sample];
3448 int64_t dts = av_rescale(current_sample->timestamp, AV_TIME_BASE, msc->time_scale);
3449 av_log(s, AV_LOG_TRACE, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
3450 if (!sample || (!s->pb->seekable && current_sample->pos < sample->pos) ||
3452 ((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb &&
3453 ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
3454 (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) {
3455 sample = current_sample;
3464 static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
3466 MOVContext *mov = s->priv_data;
3467 MOVStreamContext *sc;
3468 AVIndexEntry *sample;
3469 AVStream *st = NULL;
3472 sample = mov_find_next_sample(s, &st);
3474 mov->found_mdat = 0;
3475 if (!mov->next_root_atom)
3477 avio_seek(s->pb, mov->next_root_atom, SEEK_SET);
3478 mov->next_root_atom = 0;
3479 if (mov_read_default(mov, s->pb, (MOVAtom){ AV_RL32("root"), INT64_MAX }) < 0 ||
3482 av_log(s, AV_LOG_TRACE, "read fragments, offset 0x%"PRIx64"\n", avio_tell(s->pb));
3486 /* must be done just before reading, to avoid infinite loop on sample */
3487 sc->current_sample++;
3489 if (st->discard != AVDISCARD_ALL) {
3490 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
3491 av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
3492 sc->ffindex, sample->pos);
3493 return AVERROR_INVALIDDATA;
3495 ret = av_get_packet(sc->pb, pkt, sample->size);
3498 if (sc->has_palette) {
3501 pal = av_packet_new_side_data(pkt, AV_PKT_DATA_PALETTE, AVPALETTE_SIZE);
3503 av_log(mov->fc, AV_LOG_ERROR, "Cannot append palette to packet\n");
3505 memcpy(pal, sc->palette, AVPALETTE_SIZE);
3506 sc->has_palette = 0;
3509 #if CONFIG_DV_DEMUXER
3510 if (mov->dv_demux && sc->dv_audio_container) {
3511 avpriv_dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size);
3514 ret = avpriv_dv_get_packet(mov->dv_demux, pkt);
3521 pkt->stream_index = sc->ffindex;
3522 pkt->dts = sample->timestamp;
3523 if (sc->ctts_data && sc->ctts_index < sc->ctts_count) {
3524 pkt->pts = pkt->dts + sc->dts_shift + sc->ctts_data[sc->ctts_index].duration;
3525 /* update ctts context */
3527 if (sc->ctts_index < sc->ctts_count &&
3528 sc->ctts_data[sc->ctts_index].count == sc->ctts_sample) {
3530 sc->ctts_sample = 0;
3533 pkt->dts = AV_NOPTS_VALUE;
3535 int64_t next_dts = (sc->current_sample < st->nb_index_entries) ?
3536 st->index_entries[sc->current_sample].timestamp : st->duration;
3537 pkt->duration = next_dts - pkt->dts;
3538 pkt->pts = pkt->dts;
3540 if (st->discard == AVDISCARD_ALL)
3542 pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? AV_PKT_FLAG_KEY : 0;
3543 pkt->pos = sample->pos;
3544 av_log(s, AV_LOG_TRACE, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %"PRId64"\n",
3545 pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
3549 static int mov_seek_stream(AVFormatContext *s, AVStream *st, int64_t timestamp, int flags)
3551 MOVStreamContext *sc = st->priv_data;
3552 int sample, time_sample;
3555 sample = av_index_search_timestamp(st, timestamp, flags);
3556 av_log(s, AV_LOG_TRACE, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
3557 if (sample < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
3559 if (sample < 0) /* not sure what to do */
3560 return AVERROR_INVALIDDATA;
3561 sc->current_sample = sample;
3562 av_log(s, AV_LOG_TRACE, "stream %d, found sample %d\n", st->index, sc->current_sample);
3563 /* adjust ctts index */
3564 if (sc->ctts_data) {
3566 for (i = 0; i < sc->ctts_count; i++) {
3567 int next = time_sample + sc->ctts_data[i].count;
3568 if (next > sc->current_sample) {
3570 sc->ctts_sample = sc->current_sample - time_sample;
3579 static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
3581 MOVContext *mc = s->priv_data;
3586 if (stream_index >= s->nb_streams)
3587 return AVERROR_INVALIDDATA;
3588 if (sample_time < 0)
3591 st = s->streams[stream_index];
3592 sample = mov_seek_stream(s, st, sample_time, flags);
3596 if (mc->seek_individually) {
3597 /* adjust seek timestamp to found sample timestamp */
3598 int64_t seek_timestamp = st->index_entries[sample].timestamp;
3600 for (i = 0; i < s->nb_streams; i++) {
3603 if (stream_index == i)
3606 timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
3607 mov_seek_stream(s, st, timestamp, flags);
3610 for (i = 0; i < s->nb_streams; i++) {
3611 MOVStreamContext *sc;
3614 sc->current_sample = 0;
3617 MOVStreamContext *sc;
3618 AVIndexEntry *entry = mov_find_next_sample(s, &st);
3620 return AVERROR_INVALIDDATA;
3622 if (sc->ffindex == stream_index && sc->current_sample == sample)
3624 sc->current_sample++;
3630 #define OFFSET(x) offsetof(MOVContext, x)
3631 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
3632 static const AVOption mov_options[] = {
3633 {"seek_streams_individually",
3634 "Seek each stream individually to the to the closest point",
3635 OFFSET(seek_individually), AV_OPT_TYPE_INT, { .i64 = 1 },
3637 { "export_all", "Export unrecognized metadata entries", OFFSET(export_all),
3638 AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, .flags = FLAGS },
3639 { "export_xmp", "Export full XMP metadata", OFFSET(export_xmp),
3640 AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, .flags = FLAGS },
3644 static const AVClass mov_class = {
3645 .class_name = "mov,mp4,m4a,3gp,3g2,mj2",
3646 .item_name = av_default_item_name,
3647 .option = mov_options,
3648 .version = LIBAVUTIL_VERSION_INT,
3651 AVInputFormat ff_mov_demuxer = {
3652 .name = "mov,mp4,m4a,3gp,3g2,mj2",
3653 .long_name = NULL_IF_CONFIG_SMALL("QuickTime / MOV"),
3654 .priv_class = &mov_class,
3655 .priv_data_size = sizeof(MOVContext),
3656 .extensions = "mov,mp4,m4a,3gp,3g2,mj2",
3657 .read_probe = mov_probe,
3658 .read_header = mov_read_header,
3659 .read_packet = mov_read_packet,
3660 .read_close = mov_read_close,
3661 .read_seek = mov_read_seek,