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 st->disposition |= AV_DISPOSITION_ATTACHED_PIC;
205 st->attached_pic = pkt;
206 st->attached_pic.stream_index = st->index;
207 st->attached_pic.flags |= AV_PKT_FLAG_KEY;
209 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
210 st->codec->codec_id = id;
215 static int mov_metadata_loci(MOVContext *c, AVIOContext *pb, unsigned len)
217 char language[4] = { 0 };
219 uint16_t langcode = 0;
220 double longitude, latitude;
221 const char *key = "location";
223 if (len < 4 + 2 + 1 + 1 + 4 + 4 + 4)
224 return AVERROR_INVALIDDATA;
226 avio_skip(pb, 4); // version+flags
227 langcode = avio_rb16(pb);
228 ff_mov_lang_to_iso639(langcode, language);
231 len -= avio_get_str(pb, len, buf, sizeof(buf)); // place name
233 return AVERROR_INVALIDDATA;
234 avio_skip(pb, 1); // role
238 return AVERROR_INVALIDDATA;
239 longitude = ((int32_t) avio_rb32(pb)) / (float) (1 << 16);
240 latitude = ((int32_t) avio_rb32(pb)) / (float) (1 << 16);
242 // Try to output in the same format as the ?xyz field
243 snprintf(buf, sizeof(buf), "%+08.4f%+09.4f/", latitude, longitude);
244 if (*language && strcmp(language, "und")) {
246 snprintf(key2, sizeof(key2), "%s-%s", key, language);
247 av_dict_set(&c->fc->metadata, key2, buf, 0);
249 c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
250 return av_dict_set(&c->fc->metadata, key, buf, 0);
253 static int mov_read_udta_string(MOVContext *c, AVIOContext *pb, MOVAtom atom)
256 char *str, key2[32], language[4] = {0};
257 const char *key = NULL;
258 uint16_t langcode = 0;
259 uint32_t data_type = 0, str_size, str_size_alloc;
260 int (*parse)(MOVContext*, AVIOContext*, unsigned, const char*) = NULL;
264 case MKTAG( '@','P','R','M'): key = "premiere_version"; raw = 1; break;
265 case MKTAG( '@','P','R','Q'): key = "quicktime_version"; raw = 1; break;
266 case MKTAG( 'X','M','P','_'):
267 if (c->export_xmp) { key = "xmp"; raw = 1; } break;
268 case MKTAG( 'a','A','R','T'): key = "album_artist"; break;
269 case MKTAG( 'a','k','I','D'): key = "account_type";
270 parse = mov_metadata_int8_no_padding; break;
271 case MKTAG( 'a','p','I','D'): key = "account_id"; break;
272 case MKTAG( 'c','a','t','g'): key = "category"; break;
273 case MKTAG( 'c','p','i','l'): key = "compilation";
274 parse = mov_metadata_int8_no_padding; break;
275 case MKTAG( 'c','p','r','t'): key = "copyright"; break;
276 case MKTAG( 'd','e','s','c'): key = "description"; break;
277 case MKTAG( 'd','i','s','k'): key = "disc";
278 parse = mov_metadata_track_or_disc_number; break;
279 case MKTAG( 'e','g','i','d'): key = "episode_uid";
280 parse = mov_metadata_int8_no_padding; break;
281 case MKTAG( 'g','n','r','e'): key = "genre";
282 parse = mov_metadata_gnre; break;
283 case MKTAG( 'h','d','v','d'): key = "hd_video";
284 parse = mov_metadata_int8_no_padding; break;
285 case MKTAG( 'k','e','y','w'): key = "keywords"; break;
286 case MKTAG( 'l','d','e','s'): key = "synopsis"; break;
287 case MKTAG( 'l','o','c','i'):
288 return mov_metadata_loci(c, pb, atom.size);
289 case MKTAG( 'p','c','s','t'): key = "podcast";
290 parse = mov_metadata_int8_no_padding; break;
291 case MKTAG( 'p','g','a','p'): key = "gapless_playback";
292 parse = mov_metadata_int8_no_padding; break;
293 case MKTAG( 'p','u','r','d'): key = "purchase_date"; break;
294 case MKTAG( 'r','t','n','g'): key = "rating";
295 parse = mov_metadata_int8_no_padding; break;
296 case MKTAG( 's','o','a','a'): key = "sort_album_artist"; break;
297 case MKTAG( 's','o','a','l'): key = "sort_album"; break;
298 case MKTAG( 's','o','a','r'): key = "sort_artist"; break;
299 case MKTAG( 's','o','c','o'): key = "sort_composer"; break;
300 case MKTAG( 's','o','n','m'): key = "sort_name"; break;
301 case MKTAG( 's','o','s','n'): key = "sort_show"; break;
302 case MKTAG( 's','t','i','k'): key = "media_type";
303 parse = mov_metadata_int8_no_padding; break;
304 case MKTAG( 't','r','k','n'): key = "track";
305 parse = mov_metadata_track_or_disc_number; break;
306 case MKTAG( 't','v','e','n'): key = "episode_id"; break;
307 case MKTAG( 't','v','e','s'): key = "episode_sort";
308 parse = mov_metadata_int8_bypass_padding; break;
309 case MKTAG( 't','v','n','n'): key = "network"; break;
310 case MKTAG( 't','v','s','h'): key = "show"; break;
311 case MKTAG( 't','v','s','n'): key = "season_number";
312 parse = mov_metadata_int8_bypass_padding; break;
313 case MKTAG(0xa9,'A','R','T'): key = "artist"; break;
314 case MKTAG(0xa9,'P','R','D'): key = "producer"; break;
315 case MKTAG(0xa9,'a','l','b'): key = "album"; break;
316 case MKTAG(0xa9,'a','u','t'): key = "artist"; break;
317 case MKTAG(0xa9,'c','h','p'): key = "chapter"; break;
318 case MKTAG(0xa9,'c','m','t'): key = "comment"; break;
319 case MKTAG(0xa9,'c','o','m'): key = "composer"; break;
320 case MKTAG(0xa9,'c','p','y'): key = "copyright"; break;
321 case MKTAG(0xa9,'d','a','y'): key = "date"; break;
322 case MKTAG(0xa9,'d','i','r'): key = "director"; break;
323 case MKTAG(0xa9,'d','i','s'): key = "disclaimer"; break;
324 case MKTAG(0xa9,'e','d','1'): key = "edit_date"; break;
325 case MKTAG(0xa9,'e','n','c'): key = "encoder"; break;
326 case MKTAG(0xa9,'f','m','t'): key = "original_format"; break;
327 case MKTAG(0xa9,'g','e','n'): key = "genre"; break;
328 case MKTAG(0xa9,'g','r','p'): key = "grouping"; break;
329 case MKTAG(0xa9,'h','s','t'): key = "host_computer"; break;
330 case MKTAG(0xa9,'i','n','f'): key = "comment"; break;
331 case MKTAG(0xa9,'l','y','r'): key = "lyrics"; break;
332 case MKTAG(0xa9,'m','a','k'): key = "make"; break;
333 case MKTAG(0xa9,'m','o','d'): key = "model"; break;
334 case MKTAG(0xa9,'n','a','m'): key = "title"; break;
335 case MKTAG(0xa9,'o','p','e'): key = "original_artist"; break;
336 case MKTAG(0xa9,'p','r','d'): key = "producer"; break;
337 case MKTAG(0xa9,'p','r','f'): key = "performers"; break;
338 case MKTAG(0xa9,'r','e','q'): key = "playback_requirements"; break;
339 case MKTAG(0xa9,'s','r','c'): key = "original_source"; break;
340 case MKTAG(0xa9,'s','t','3'): key = "subtitle"; break;
341 case MKTAG(0xa9,'s','w','r'): key = "encoder"; break;
342 case MKTAG(0xa9,'t','o','o'): key = "encoder"; break;
343 case MKTAG(0xa9,'t','r','k'): key = "track"; break;
344 case MKTAG(0xa9,'u','r','l'): key = "URL"; break;
345 case MKTAG(0xa9,'w','r','n'): key = "warning"; break;
346 case MKTAG(0xa9,'w','r','t'): key = "composer"; break;
347 case MKTAG(0xa9,'x','y','z'): key = "location"; break;
350 if (c->itunes_metadata && atom.size > 8) {
351 int data_size = avio_rb32(pb);
352 int tag = avio_rl32(pb);
353 if (tag == MKTAG('d','a','t','a')) {
354 data_type = avio_rb32(pb); // type
355 avio_rb32(pb); // unknown
356 str_size = data_size - 16;
359 if (atom.type == MKTAG('c', 'o', 'v', 'r')) {
360 int ret = mov_read_covr(c, pb, data_type, str_size);
362 av_log(c->fc, AV_LOG_ERROR, "Error parsing cover art.\n");
367 } else if (atom.size > 4 && key && !c->itunes_metadata && !raw) {
368 str_size = avio_rb16(pb); // string length
369 langcode = avio_rb16(pb);
370 ff_mov_lang_to_iso639(langcode, language);
373 str_size = atom.size;
375 if (c->export_all && !key) {
376 snprintf(tmp_key, 5, "%.4s", (char*)&atom.type);
383 return AVERROR_INVALIDDATA;
385 // allocate twice as much as worst-case
386 str_size_alloc = (raw ? str_size : str_size * 2) + 1;
387 str = av_malloc(str_size_alloc);
389 return AVERROR(ENOMEM);
392 parse(c, pb, str_size, key);
394 if (!raw && (data_type == 3 || (data_type == 0 && (langcode < 0x400 || langcode == 0x7fff)))) { // MAC Encoded
395 mov_read_mac_string(c, pb, str_size, str, str_size_alloc);
397 avio_read(pb, str, str_size);
400 c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
401 av_dict_set(&c->fc->metadata, key, str, 0);
402 if (*language && strcmp(language, "und")) {
403 snprintf(key2, sizeof(key2), "%s-%s", key, language);
404 av_dict_set(&c->fc->metadata, key2, str, 0);
407 av_dlog(c->fc, "lang \"%3s\" ", language);
408 av_dlog(c->fc, "tag \"%s\" value \"%s\" atom \"%.4s\" %d %"PRId64"\n",
409 key, str, (char*)&atom.type, str_size_alloc, atom.size);
415 static int mov_read_chpl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
418 int i, nb_chapters, str_len, version;
421 if ((atom.size -= 5) < 0)
424 version = avio_r8(pb);
427 avio_rb32(pb); // ???
428 nb_chapters = avio_r8(pb);
430 for (i = 0; i < nb_chapters; i++) {
434 start = avio_rb64(pb);
435 str_len = avio_r8(pb);
437 if ((atom.size -= 9+str_len) < 0)
440 avio_read(pb, str, str_len);
442 avpriv_new_chapter(c->fc, i, (AVRational){1,10000000}, start, AV_NOPTS_VALUE, str);
447 #define MIN_DATA_ENTRY_BOX_SIZE 12
448 static int mov_read_dref(MOVContext *c, AVIOContext *pb, MOVAtom atom)
451 MOVStreamContext *sc;
454 if (c->fc->nb_streams < 1)
456 st = c->fc->streams[c->fc->nb_streams-1];
459 avio_rb32(pb); // version + flags
460 entries = avio_rb32(pb);
461 if (entries > (atom.size - 1) / MIN_DATA_ENTRY_BOX_SIZE + 1 ||
462 entries >= UINT_MAX / sizeof(*sc->drefs))
463 return AVERROR_INVALIDDATA;
465 sc->drefs = av_mallocz(entries * sizeof(*sc->drefs));
467 return AVERROR(ENOMEM);
468 sc->drefs_count = entries;
470 for (i = 0; i < sc->drefs_count; i++) {
471 MOVDref *dref = &sc->drefs[i];
472 uint32_t size = avio_rb32(pb);
473 int64_t next = avio_tell(pb) + size - 4;
476 return AVERROR_INVALIDDATA;
478 dref->type = avio_rl32(pb);
479 avio_rb32(pb); // version + flags
480 av_dlog(c->fc, "type %.4s size %d\n", (char*)&dref->type, size);
482 if (dref->type == MKTAG('a','l','i','s') && size > 150) {
483 /* macintosh alias record */
484 uint16_t volume_len, len;
489 volume_len = avio_r8(pb);
490 volume_len = FFMIN(volume_len, 27);
491 avio_read(pb, dref->volume, 27);
492 dref->volume[volume_len] = 0;
493 av_log(c->fc, AV_LOG_DEBUG, "volume %s, len %d\n", dref->volume, volume_len);
498 len = FFMIN(len, 63);
499 avio_read(pb, dref->filename, 63);
500 dref->filename[len] = 0;
501 av_log(c->fc, AV_LOG_DEBUG, "filename %s, len %d\n", dref->filename, len);
505 /* read next level up_from_alias/down_to_target */
506 dref->nlvl_from = avio_rb16(pb);
507 dref->nlvl_to = avio_rb16(pb);
508 av_log(c->fc, AV_LOG_DEBUG, "nlvl from %d, nlvl to %d\n",
509 dref->nlvl_from, dref->nlvl_to);
513 for (type = 0; type != -1 && avio_tell(pb) < next; ) {
516 type = avio_rb16(pb);
518 av_log(c->fc, AV_LOG_DEBUG, "type %d, len %d\n", type, len);
521 if (type == 2) { // absolute path
523 dref->path = av_mallocz(len+1);
525 return AVERROR(ENOMEM);
526 avio_read(pb, dref->path, len);
527 if (len > volume_len && !strncmp(dref->path, dref->volume, volume_len)) {
529 memmove(dref->path, dref->path+volume_len, len);
532 for (j = 0; j < len; j++)
533 if (dref->path[j] == ':')
535 av_log(c->fc, AV_LOG_DEBUG, "path %s\n", dref->path);
536 } else if (type == 0) { // directory name
538 dref->dir = av_malloc(len+1);
540 return AVERROR(ENOMEM);
541 avio_read(pb, dref->dir, len);
543 for (j = 0; j < len; j++)
544 if (dref->dir[j] == ':')
546 av_log(c->fc, AV_LOG_DEBUG, "dir %s\n", dref->dir);
551 avio_seek(pb, next, SEEK_SET);
556 static int mov_read_hdlr(MOVContext *c, AVIOContext *pb, MOVAtom atom)
560 uint32_t av_unused ctype;
564 if (c->fc->nb_streams < 1) // meta before first trak
567 st = c->fc->streams[c->fc->nb_streams-1];
569 avio_r8(pb); /* version */
570 avio_rb24(pb); /* flags */
573 ctype = avio_rl32(pb);
574 type = avio_rl32(pb); /* component subtype */
576 av_dlog(c->fc, "ctype= %.4s (0x%08x)\n", (char*)&ctype, ctype);
577 av_dlog(c->fc, "stype= %.4s\n", (char*)&type);
579 if (type == MKTAG('v','i','d','e'))
580 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
581 else if (type == MKTAG('s','o','u','n'))
582 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
583 else if (type == MKTAG('m','1','a',' '))
584 st->codec->codec_id = AV_CODEC_ID_MP2;
585 else if ((type == MKTAG('s','u','b','p')) || (type == MKTAG('c','l','c','p')))
586 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
588 avio_rb32(pb); /* component manufacture */
589 avio_rb32(pb); /* component flags */
590 avio_rb32(pb); /* component flags mask */
592 title_size = atom.size - 24;
593 if (title_size > 0) {
594 title_str = av_malloc(title_size + 1); /* Add null terminator */
596 return AVERROR(ENOMEM);
597 avio_read(pb, title_str, title_size);
598 title_str[title_size] = 0;
600 int off = (!c->isom && title_str[0] == title_size - 1);
601 av_dict_set(&st->metadata, "handler_name", title_str + off, 0);
603 av_freep(&title_str);
609 int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb)
614 if (fc->nb_streams < 1)
616 st = fc->streams[fc->nb_streams-1];
618 avio_rb32(pb); /* version + flags */
619 ff_mp4_read_descr(fc, pb, &tag);
620 if (tag == MP4ESDescrTag) {
621 ff_mp4_parse_es_descr(pb, NULL);
623 avio_rb16(pb); /* ID */
625 ff_mp4_read_descr(fc, pb, &tag);
626 if (tag == MP4DecConfigDescrTag)
627 ff_mp4_read_dec_config_descr(fc, st, pb);
631 static int mov_read_esds(MOVContext *c, AVIOContext *pb, MOVAtom atom)
633 return ff_mov_read_esds(c->fc, pb);
636 static int mov_read_dac3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
639 enum AVAudioServiceType *ast;
640 int ac3info, acmod, lfeon, bsmod;
642 if (c->fc->nb_streams < 1)
644 st = c->fc->streams[c->fc->nb_streams-1];
646 ast = (enum AVAudioServiceType*)ff_stream_new_side_data(st, AV_PKT_DATA_AUDIO_SERVICE_TYPE,
649 return AVERROR(ENOMEM);
651 ac3info = avio_rb24(pb);
652 bsmod = (ac3info >> 14) & 0x7;
653 acmod = (ac3info >> 11) & 0x7;
654 lfeon = (ac3info >> 10) & 0x1;
655 st->codec->channels = ((int[]){2,1,2,3,3,4,4,5})[acmod] + lfeon;
656 st->codec->channel_layout = avpriv_ac3_channel_layout_tab[acmod];
658 st->codec->channel_layout |= AV_CH_LOW_FREQUENCY;
660 if (st->codec->channels > 1 && bsmod == 0x7)
661 *ast = AV_AUDIO_SERVICE_TYPE_KARAOKE;
663 st->codec->audio_service_type = *ast;
668 static int mov_read_dec3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
671 enum AVAudioServiceType *ast;
672 int eac3info, acmod, lfeon, bsmod;
674 if (c->fc->nb_streams < 1)
676 st = c->fc->streams[c->fc->nb_streams-1];
678 ast = (enum AVAudioServiceType*)ff_stream_new_side_data(st, AV_PKT_DATA_AUDIO_SERVICE_TYPE,
681 return AVERROR(ENOMEM);
683 /* No need to parse fields for additional independent substreams and its
684 * associated dependent substreams since libavcodec's E-AC-3 decoder
685 * does not support them yet. */
686 avio_rb16(pb); /* data_rate and num_ind_sub */
687 eac3info = avio_rb24(pb);
688 bsmod = (eac3info >> 12) & 0x1f;
689 acmod = (eac3info >> 9) & 0x7;
690 lfeon = (eac3info >> 8) & 0x1;
691 st->codec->channel_layout = avpriv_ac3_channel_layout_tab[acmod];
693 st->codec->channel_layout |= AV_CH_LOW_FREQUENCY;
694 st->codec->channels = av_get_channel_layout_nb_channels(st->codec->channel_layout);
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_chan(MOVContext *c, AVIOContext *pb, MOVAtom atom)
708 if (c->fc->nb_streams < 1)
710 st = c->fc->streams[c->fc->nb_streams-1];
715 /* skip version and flags */
718 ff_mov_read_chan(c->fc, pb, st, atom.size - 4);
723 static int mov_read_wfex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
727 if (c->fc->nb_streams < 1)
729 st = c->fc->streams[c->fc->nb_streams-1];
731 return ff_get_wav_header(pb, st->codec, atom.size);
734 static int mov_read_pasp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
736 const int num = avio_rb32(pb);
737 const int den = avio_rb32(pb);
740 if (c->fc->nb_streams < 1)
742 st = c->fc->streams[c->fc->nb_streams-1];
744 if ((st->sample_aspect_ratio.den != 1 || st->sample_aspect_ratio.num) && // default
745 (den != st->sample_aspect_ratio.den || num != st->sample_aspect_ratio.num)) {
746 av_log(c->fc, AV_LOG_WARNING,
747 "sample aspect ratio already set to %d:%d, ignoring 'pasp' atom (%d:%d)\n",
748 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
750 } else if (den != 0) {
751 st->sample_aspect_ratio.num = num;
752 st->sample_aspect_ratio.den = den;
757 /* this atom contains actual media data */
758 static int mov_read_mdat(MOVContext *c, AVIOContext *pb, MOVAtom atom)
760 if (atom.size == 0) /* wrong one (MP4) */
763 return 0; /* now go for moov */
766 /* read major brand, minor version and compatible brands and store them as metadata */
767 static int mov_read_ftyp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
771 char minor_ver_str[11]; /* 32 bit integer -> 10 digits + null */
772 char* comp_brands_str;
773 uint8_t type[5] = {0};
775 avio_read(pb, type, 4);
776 if (strcmp(type, "qt "))
778 av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
779 av_dict_set(&c->fc->metadata, "major_brand", type, 0);
780 minor_ver = avio_rb32(pb); /* minor version */
781 snprintf(minor_ver_str, sizeof(minor_ver_str), "%"PRIu32"", minor_ver);
782 av_dict_set(&c->fc->metadata, "minor_version", minor_ver_str, 0);
784 comp_brand_size = atom.size - 8;
785 if (comp_brand_size < 0)
786 return AVERROR_INVALIDDATA;
787 comp_brands_str = av_malloc(comp_brand_size + 1); /* Add null terminator */
788 if (!comp_brands_str)
789 return AVERROR(ENOMEM);
790 avio_read(pb, comp_brands_str, comp_brand_size);
791 comp_brands_str[comp_brand_size] = 0;
792 av_dict_set(&c->fc->metadata, "compatible_brands", comp_brands_str, 0);
793 av_freep(&comp_brands_str);
798 /* this atom should contain all header atoms */
799 static int mov_read_moov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
803 if ((ret = mov_read_default(c, pb, atom)) < 0)
805 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
806 /* so we don't parse the whole file if over a network */
808 return 0; /* now go for mdat */
811 static int mov_read_moof(MOVContext *c, AVIOContext *pb, MOVAtom atom)
813 c->fragment.moof_offset = c->fragment.implicit_offset = avio_tell(pb) - 8;
814 av_dlog(c->fc, "moof offset %"PRIx64"\n", c->fragment.moof_offset);
815 return mov_read_default(c, pb, atom);
818 static void mov_metadata_creation_time(AVDictionary **metadata, time_t time)
822 struct tm *ptm, tmbuf;
823 time -= 2082844800; /* seconds between 1904-01-01 and Epoch */
824 ptm = gmtime_r(&time, &tmbuf);
826 if (strftime(buffer, sizeof(buffer), "%Y-%m-%d %H:%M:%S", ptm))
827 av_dict_set(metadata, "creation_time", buffer, 0);
831 static int mov_read_mdhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
834 MOVStreamContext *sc;
836 char language[4] = {0};
838 time_t creation_time;
840 if (c->fc->nb_streams < 1)
842 st = c->fc->streams[c->fc->nb_streams-1];
845 if (sc->time_scale) {
846 av_log(c->fc, AV_LOG_ERROR, "Multiple mdhd?\n");
847 return AVERROR_INVALIDDATA;
850 version = avio_r8(pb);
852 avpriv_request_sample(c->fc, "Version %d", version);
853 return AVERROR_PATCHWELCOME;
855 avio_rb24(pb); /* flags */
857 creation_time = avio_rb64(pb);
860 creation_time = avio_rb32(pb);
861 avio_rb32(pb); /* modification time */
863 mov_metadata_creation_time(&st->metadata, creation_time);
865 sc->time_scale = avio_rb32(pb);
866 st->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
868 lang = avio_rb16(pb); /* language */
869 if (ff_mov_lang_to_iso639(lang, language))
870 av_dict_set(&st->metadata, "language", language, 0);
871 avio_rb16(pb); /* quality */
876 static int mov_read_mvhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
878 time_t creation_time;
879 int version = avio_r8(pb); /* version */
880 avio_rb24(pb); /* flags */
883 creation_time = avio_rb64(pb);
886 creation_time = avio_rb32(pb);
887 avio_rb32(pb); /* modification time */
889 mov_metadata_creation_time(&c->fc->metadata, creation_time);
890 c->time_scale = avio_rb32(pb); /* time scale */
892 av_dlog(c->fc, "time scale = %i\n", c->time_scale);
894 c->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
895 avio_rb32(pb); /* preferred scale */
897 avio_rb16(pb); /* preferred volume */
899 avio_skip(pb, 10); /* reserved */
901 avio_skip(pb, 36); /* display matrix */
903 avio_rb32(pb); /* preview time */
904 avio_rb32(pb); /* preview duration */
905 avio_rb32(pb); /* poster time */
906 avio_rb32(pb); /* selection time */
907 avio_rb32(pb); /* selection duration */
908 avio_rb32(pb); /* current time */
909 avio_rb32(pb); /* next track ID */
914 static int mov_read_smi(MOVContext *c, AVIOContext *pb, MOVAtom atom)
918 if (c->fc->nb_streams < 1)
920 st = c->fc->streams[c->fc->nb_streams-1];
922 if ((uint64_t)atom.size > (1<<30))
923 return AVERROR_INVALIDDATA;
925 // currently SVQ3 decoder expect full STSD header - so let's fake it
926 // this should be fixed and just SMI header should be passed
927 av_free(st->codec->extradata);
928 st->codec->extradata = av_mallocz(atom.size + 0x5a + FF_INPUT_BUFFER_PADDING_SIZE);
929 if (!st->codec->extradata)
930 return AVERROR(ENOMEM);
931 st->codec->extradata_size = 0x5a + atom.size;
932 memcpy(st->codec->extradata, "SVQ3", 4); // fake
933 avio_read(pb, st->codec->extradata + 0x5a, atom.size);
934 av_dlog(c->fc, "Reading SMI %"PRId64" %s\n", atom.size, st->codec->extradata + 0x5a);
938 static int mov_read_enda(MOVContext *c, AVIOContext *pb, MOVAtom atom)
943 if (c->fc->nb_streams < 1)
945 st = c->fc->streams[c->fc->nb_streams-1];
947 little_endian = avio_rb16(pb);
948 av_dlog(c->fc, "enda %d\n", little_endian);
949 if (little_endian == 1) {
950 switch (st->codec->codec_id) {
951 case AV_CODEC_ID_PCM_S24BE:
952 st->codec->codec_id = AV_CODEC_ID_PCM_S24LE;
954 case AV_CODEC_ID_PCM_S32BE:
955 st->codec->codec_id = AV_CODEC_ID_PCM_S32LE;
957 case AV_CODEC_ID_PCM_F32BE:
958 st->codec->codec_id = AV_CODEC_ID_PCM_F32LE;
960 case AV_CODEC_ID_PCM_F64BE:
961 st->codec->codec_id = AV_CODEC_ID_PCM_F64LE;
970 static int mov_read_colr(MOVContext *c, AVIOContext *pb, MOVAtom atom)
973 char color_parameter_type[5] = { 0 };
974 int color_primaries, color_trc, color_matrix;
976 if (c->fc->nb_streams < 1)
978 st = c->fc->streams[c->fc->nb_streams - 1];
980 avio_read(pb, color_parameter_type, 4);
981 if (strncmp(color_parameter_type, "nclx", 4) &&
982 strncmp(color_parameter_type, "nclc", 4)) {
983 av_log(c->fc, AV_LOG_WARNING, "unsupported color_parameter_type %s\n",
984 color_parameter_type);
988 color_primaries = avio_rb16(pb);
989 color_trc = avio_rb16(pb);
990 color_matrix = avio_rb16(pb);
992 av_dlog(c->fc, "%s: pri %"PRIu16" trc %"PRIu16" matrix %"PRIu16"",
993 color_parameter_type, color_primaries, color_trc, color_matrix);
996 uint8_t color_range = avio_r8(pb) >> 7;
997 av_dlog(c->fc, " full %"PRIu8"", color_range)
999 st->codec->color_range = AVCOL_RANGE_JPEG;
1001 st->codec->color_range = AVCOL_RANGE_MPEG;
1002 /* 14496-12 references JPEG XR specs (rather than the more complete
1003 * 23001-8) so some adjusting is required */
1004 if (color_primaries >= AVCOL_PRI_FILM)
1005 color_primaries = AVCOL_PRI_UNSPECIFIED;
1006 if ((color_trc >= AVCOL_TRC_LINEAR &&
1007 color_trc <= AVCOL_TRC_LOG_SQRT) ||
1008 color_trc >= AVCOL_TRC_BT2020_10)
1009 color_trc = AVCOL_TRC_UNSPECIFIED;
1010 if (color_matrix >= AVCOL_SPC_BT2020_NCL)
1011 color_matrix = AVCOL_SPC_UNSPECIFIED;
1012 st->codec->color_primaries = color_primaries;
1013 st->codec->color_trc = color_trc;
1014 st->codec->colorspace = color_matrix;
1016 /* color primaries, Table 4-4 */
1017 switch (color_primaries) {
1018 case 1: st->codec->color_primaries = AVCOL_PRI_BT709; break;
1019 case 5: st->codec->color_primaries = AVCOL_PRI_SMPTE170M; break;
1020 case 6: st->codec->color_primaries = AVCOL_PRI_SMPTE240M; break;
1022 /* color transfer, Table 4-5 */
1023 switch (color_trc) {
1024 case 1: st->codec->color_trc = AVCOL_TRC_BT709; break;
1025 case 7: st->codec->color_trc = AVCOL_TRC_SMPTE240M; break;
1027 /* color matrix, Table 4-6 */
1028 switch (color_matrix) {
1029 case 1: st->codec->colorspace = AVCOL_SPC_BT709; break;
1030 case 6: st->codec->colorspace = AVCOL_SPC_BT470BG; break;
1031 case 7: st->codec->colorspace = AVCOL_SPC_SMPTE240M; break;
1034 av_dlog(c->fc, "\n")
1039 static int mov_read_fiel(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1042 unsigned mov_field_order;
1043 enum AVFieldOrder decoded_field_order = AV_FIELD_UNKNOWN;
1045 if (c->fc->nb_streams < 1) // will happen with jp2 files
1047 st = c->fc->streams[c->fc->nb_streams-1];
1049 return AVERROR_INVALIDDATA;
1050 mov_field_order = avio_rb16(pb);
1051 if ((mov_field_order & 0xFF00) == 0x0100)
1052 decoded_field_order = AV_FIELD_PROGRESSIVE;
1053 else if ((mov_field_order & 0xFF00) == 0x0200) {
1054 switch (mov_field_order & 0xFF) {
1055 case 0x01: decoded_field_order = AV_FIELD_TT;
1057 case 0x06: decoded_field_order = AV_FIELD_BB;
1059 case 0x09: decoded_field_order = AV_FIELD_TB;
1061 case 0x0E: decoded_field_order = AV_FIELD_BT;
1065 if (decoded_field_order == AV_FIELD_UNKNOWN && mov_field_order) {
1066 av_log(NULL, AV_LOG_ERROR, "Unknown MOV field order 0x%04x\n", mov_field_order);
1068 st->codec->field_order = decoded_field_order;
1073 /* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
1074 static int mov_read_extradata(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1081 if (c->fc->nb_streams < 1) // will happen with jp2 files
1083 st= c->fc->streams[c->fc->nb_streams-1];
1084 size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
1085 if (size > INT_MAX || (uint64_t)atom.size > INT_MAX)
1086 return AVERROR_INVALIDDATA;
1087 if ((err = av_reallocp(&st->codec->extradata, size)) < 0) {
1088 st->codec->extradata_size = 0;
1091 buf = st->codec->extradata + st->codec->extradata_size;
1092 st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE;
1093 AV_WB32( buf , atom.size + 8);
1094 AV_WL32( buf + 4, atom.type);
1095 avio_read(pb, buf + 8, atom.size);
1099 static int mov_read_wave(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1103 if (c->fc->nb_streams < 1)
1105 st = c->fc->streams[c->fc->nb_streams-1];
1107 if ((uint64_t)atom.size > (1<<30))
1108 return AVERROR_INVALIDDATA;
1110 if (st->codec->codec_id == AV_CODEC_ID_QDM2 || st->codec->codec_id == AV_CODEC_ID_QDMC) {
1111 // pass all frma atom to codec, needed at least for QDMC and QDM2
1112 av_free(st->codec->extradata);
1113 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
1114 if (!st->codec->extradata)
1115 return AVERROR(ENOMEM);
1116 st->codec->extradata_size = atom.size;
1117 avio_read(pb, st->codec->extradata, atom.size);
1118 } else if (atom.size > 8) { /* to read frma, esds atoms */
1120 if ((ret = mov_read_default(c, pb, atom)) < 0)
1123 avio_skip(pb, atom.size);
1128 * This function reads atom content and puts data in extradata without tag
1129 * nor size unlike mov_read_extradata.
1131 static int mov_read_glbl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1135 if (c->fc->nb_streams < 1)
1137 st = c->fc->streams[c->fc->nb_streams-1];
1139 if ((uint64_t)atom.size > (1<<30))
1140 return AVERROR_INVALIDDATA;
1142 if (atom.size >= 10) {
1143 // Broken files created by legacy versions of libavformat will
1144 // wrap a whole fiel atom inside of a glbl atom.
1145 unsigned size = avio_rb32(pb);
1146 unsigned type = avio_rl32(pb);
1147 avio_seek(pb, -8, SEEK_CUR);
1148 if (type == MKTAG('f','i','e','l') && size == atom.size)
1149 return mov_read_default(c, pb, atom);
1151 av_free(st->codec->extradata);
1152 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
1153 if (!st->codec->extradata)
1154 return AVERROR(ENOMEM);
1155 st->codec->extradata_size = atom.size;
1156 avio_read(pb, st->codec->extradata, atom.size);
1160 static int mov_read_dvc1(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1163 uint8_t profile_level;
1165 if (c->fc->nb_streams < 1)
1167 st = c->fc->streams[c->fc->nb_streams-1];
1169 if (atom.size >= (1<<28) || atom.size < 7)
1170 return AVERROR_INVALIDDATA;
1172 profile_level = avio_r8(pb);
1173 if ((profile_level & 0xf0) != 0xc0)
1176 av_free(st->codec->extradata);
1177 st->codec->extradata = av_mallocz(atom.size - 7 + FF_INPUT_BUFFER_PADDING_SIZE);
1178 if (!st->codec->extradata)
1179 return AVERROR(ENOMEM);
1180 st->codec->extradata_size = atom.size - 7;
1181 avio_seek(pb, 6, SEEK_CUR);
1182 avio_read(pb, st->codec->extradata, st->codec->extradata_size);
1187 * An strf atom is a BITMAPINFOHEADER struct. This struct is 40 bytes itself,
1188 * but can have extradata appended at the end after the 40 bytes belonging
1191 static int mov_read_strf(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1195 if (c->fc->nb_streams < 1)
1197 if (atom.size <= 40)
1199 st = c->fc->streams[c->fc->nb_streams-1];
1201 if ((uint64_t)atom.size > (1<<30))
1202 return AVERROR_INVALIDDATA;
1204 av_free(st->codec->extradata);
1205 st->codec->extradata = av_mallocz(atom.size - 40 + FF_INPUT_BUFFER_PADDING_SIZE);
1206 if (!st->codec->extradata)
1207 return AVERROR(ENOMEM);
1208 st->codec->extradata_size = atom.size - 40;
1210 avio_read(pb, st->codec->extradata, atom.size - 40);
1214 static int mov_read_stco(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1217 MOVStreamContext *sc;
1218 unsigned int i, entries;
1220 if (c->fc->nb_streams < 1)
1222 st = c->fc->streams[c->fc->nb_streams-1];
1225 avio_r8(pb); /* version */
1226 avio_rb24(pb); /* flags */
1228 entries = avio_rb32(pb);
1232 if (entries >= UINT_MAX/sizeof(int64_t))
1233 return AVERROR_INVALIDDATA;
1235 sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
1236 if (!sc->chunk_offsets)
1237 return AVERROR(ENOMEM);
1238 sc->chunk_count = entries;
1240 if (atom.type == MKTAG('s','t','c','o'))
1241 for (i = 0; i < entries && !pb->eof_reached; i++)
1242 sc->chunk_offsets[i] = avio_rb32(pb);
1243 else if (atom.type == MKTAG('c','o','6','4'))
1244 for (i = 0; i < entries && !pb->eof_reached; i++)
1245 sc->chunk_offsets[i] = avio_rb64(pb);
1247 return AVERROR_INVALIDDATA;
1249 sc->chunk_count = i;
1251 if (pb->eof_reached)
1258 * Compute codec id for 'lpcm' tag.
1259 * See CoreAudioTypes and AudioStreamBasicDescription at Apple.
1261 enum AVCodecID ff_mov_get_lpcm_codec_id(int bps, int flags)
1268 return ff_get_pcm_codec_id(bps, flags & 1, flags & 2, flags & 4 ? -1 : 0);
1271 static int mov_codec_id(AVStream *st, uint32_t format)
1273 int id = ff_codec_get_id(ff_codec_movaudio_tags, format);
1276 ((format & 0xFFFF) == 'm' + ('s' << 8) ||
1277 (format & 0xFFFF) == 'T' + ('S' << 8)))
1278 id = ff_codec_get_id(ff_codec_wav_tags, av_bswap32(format) & 0xFFFF);
1280 if (st->codec->codec_type != AVMEDIA_TYPE_VIDEO && id > 0) {
1281 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
1282 } else if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO &&
1283 /* skip old asf mpeg4 tag */
1284 format && format != MKTAG('m','p','4','s')) {
1285 id = ff_codec_get_id(ff_codec_movvideo_tags, format);
1287 id = ff_codec_get_id(ff_codec_bmp_tags, format);
1289 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
1290 else if (st->codec->codec_type == AVMEDIA_TYPE_DATA) {
1291 id = ff_codec_get_id(ff_codec_movsubtitle_tags, format);
1293 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
1297 st->codec->codec_tag = format;
1302 static void mov_parse_stsd_video(MOVContext *c, AVIOContext *pb,
1303 AVStream *st, MOVStreamContext *sc)
1305 uint8_t codec_name[32];
1306 unsigned int color_depth, len, j;
1307 int color_greyscale;
1310 avio_rb16(pb); /* version */
1311 avio_rb16(pb); /* revision level */
1312 avio_rb32(pb); /* vendor */
1313 avio_rb32(pb); /* temporal quality */
1314 avio_rb32(pb); /* spatial quality */
1316 st->codec->width = avio_rb16(pb); /* width */
1317 st->codec->height = avio_rb16(pb); /* height */
1319 avio_rb32(pb); /* horiz resolution */
1320 avio_rb32(pb); /* vert resolution */
1321 avio_rb32(pb); /* data size, always 0 */
1322 avio_rb16(pb); /* frames per samples */
1324 len = avio_r8(pb); /* codec name, pascal string */
1327 mov_read_mac_string(c, pb, len, codec_name, sizeof(codec_name));
1329 avio_skip(pb, 31 - len);
1332 av_dict_set(&st->metadata, "encoder", codec_name, 0);
1334 /* codec_tag YV12 triggers an UV swap in rawdec.c */
1335 if (!memcmp(codec_name, "Planar Y'CbCr 8-bit 4:2:0", 25))
1336 st->codec->codec_tag = MKTAG('I', '4', '2', '0');
1337 /* Flash Media Server uses tag H263 with Sorenson Spark */
1338 if (st->codec->codec_tag == MKTAG('H','2','6','3') &&
1339 !memcmp(codec_name, "Sorenson H263", 13))
1340 st->codec->codec_id = AV_CODEC_ID_FLV1;
1342 st->codec->bits_per_coded_sample = avio_rb16(pb); /* depth */
1343 color_table_id = avio_rb16(pb); /* colortable id */
1344 av_dlog(c->fc, "depth %d, ctab id %d\n",
1345 st->codec->bits_per_coded_sample, color_table_id);
1346 /* figure out the palette situation */
1347 color_depth = st->codec->bits_per_coded_sample & 0x1F;
1348 color_greyscale = st->codec->bits_per_coded_sample & 0x20;
1350 /* if the depth is 2, 4, or 8 bpp, file is palettized */
1351 if ((color_depth == 2) || (color_depth == 4) || (color_depth == 8)) {
1352 /* for palette traversal */
1353 unsigned int color_start, color_count, color_end;
1354 unsigned char r, g, b;
1356 if (color_greyscale) {
1357 int color_index, color_dec;
1358 /* compute the greyscale palette */
1359 st->codec->bits_per_coded_sample = color_depth;
1360 color_count = 1 << color_depth;
1362 color_dec = 256 / (color_count - 1);
1363 for (j = 0; j < color_count; j++) {
1364 r = g = b = color_index;
1365 sc->palette[j] = (r << 16) | (g << 8) | (b);
1366 color_index -= color_dec;
1367 if (color_index < 0)
1370 } else if (color_table_id) {
1371 const uint8_t *color_table;
1372 /* if flag bit 3 is set, use the default palette */
1373 color_count = 1 << color_depth;
1374 if (color_depth == 2)
1375 color_table = ff_qt_default_palette_4;
1376 else if (color_depth == 4)
1377 color_table = ff_qt_default_palette_16;
1379 color_table = ff_qt_default_palette_256;
1381 for (j = 0; j < color_count; j++) {
1382 r = color_table[j * 3 + 0];
1383 g = color_table[j * 3 + 1];
1384 b = color_table[j * 3 + 2];
1385 sc->palette[j] = (r << 16) | (g << 8) | (b);
1388 /* load the palette from the file */
1389 color_start = avio_rb32(pb);
1390 color_count = avio_rb16(pb);
1391 color_end = avio_rb16(pb);
1392 if ((color_start <= 255) && (color_end <= 255)) {
1393 for (j = color_start; j <= color_end; j++) {
1394 /* each R, G, or B component is 16 bits;
1395 * only use the top 8 bits; skip alpha bytes
1405 sc->palette[j] = (r << 16) | (g << 8) | (b);
1409 sc->has_palette = 1;
1413 static void mov_parse_stsd_audio(MOVContext *c, AVIOContext *pb,
1414 AVStream *st, MOVStreamContext *sc)
1416 int bits_per_sample, flags;
1417 uint16_t version = avio_rb16(pb);
1419 avio_rb16(pb); /* revision level */
1420 avio_rb32(pb); /* vendor */
1422 st->codec->channels = avio_rb16(pb); /* channel count */
1423 st->codec->bits_per_coded_sample = avio_rb16(pb); /* sample size */
1424 av_dlog(c->fc, "audio channels %d\n", st->codec->channels);
1426 sc->audio_cid = avio_rb16(pb);
1427 avio_rb16(pb); /* packet size = 0 */
1429 st->codec->sample_rate = ((avio_rb32(pb) >> 16));
1431 // Read QT version 1 fields. In version 0 these do not exist.
1432 av_dlog(c->fc, "version =%d, isom =%d\n", version, c->isom);
1435 sc->samples_per_frame = avio_rb32(pb);
1436 avio_rb32(pb); /* bytes per packet */
1437 sc->bytes_per_frame = avio_rb32(pb);
1438 avio_rb32(pb); /* bytes per sample */
1439 } else if (version == 2) {
1440 avio_rb32(pb); /* sizeof struct only */
1441 st->codec->sample_rate = av_int2double(avio_rb64(pb));
1442 st->codec->channels = avio_rb32(pb);
1443 avio_rb32(pb); /* always 0x7F000000 */
1444 st->codec->bits_per_coded_sample = avio_rb32(pb);
1446 flags = avio_rb32(pb); /* lpcm format specific flag */
1447 sc->bytes_per_frame = avio_rb32(pb);
1448 sc->samples_per_frame = avio_rb32(pb);
1449 if (st->codec->codec_tag == MKTAG('l','p','c','m'))
1450 st->codec->codec_id =
1451 ff_mov_get_lpcm_codec_id(st->codec->bits_per_coded_sample,
1456 switch (st->codec->codec_id) {
1457 case AV_CODEC_ID_PCM_S8:
1458 case AV_CODEC_ID_PCM_U8:
1459 if (st->codec->bits_per_coded_sample == 16)
1460 st->codec->codec_id = AV_CODEC_ID_PCM_S16BE;
1462 case AV_CODEC_ID_PCM_S16LE:
1463 case AV_CODEC_ID_PCM_S16BE:
1464 if (st->codec->bits_per_coded_sample == 8)
1465 st->codec->codec_id = AV_CODEC_ID_PCM_S8;
1466 else if (st->codec->bits_per_coded_sample == 24)
1467 st->codec->codec_id =
1468 st->codec->codec_id == AV_CODEC_ID_PCM_S16BE ?
1469 AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE;
1471 /* set values for old format before stsd version 1 appeared */
1472 case AV_CODEC_ID_MACE3:
1473 sc->samples_per_frame = 6;
1474 sc->bytes_per_frame = 2 * st->codec->channels;
1476 case AV_CODEC_ID_MACE6:
1477 sc->samples_per_frame = 6;
1478 sc->bytes_per_frame = 1 * st->codec->channels;
1480 case AV_CODEC_ID_ADPCM_IMA_QT:
1481 sc->samples_per_frame = 64;
1482 sc->bytes_per_frame = 34 * st->codec->channels;
1484 case AV_CODEC_ID_GSM:
1485 sc->samples_per_frame = 160;
1486 sc->bytes_per_frame = 33;
1492 bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
1493 if (bits_per_sample) {
1494 st->codec->bits_per_coded_sample = bits_per_sample;
1495 sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
1499 static void mov_parse_stsd_subtitle(MOVContext *c, AVIOContext *pb,
1500 AVStream *st, MOVStreamContext *sc,
1503 // ttxt stsd contains display flags, justification, background
1504 // color, fonts, and default styles, so fake an atom to read it
1505 MOVAtom fake_atom = { .size = size };
1506 // mp4s contains a regular esds atom
1507 if (st->codec->codec_tag != AV_RL32("mp4s"))
1508 mov_read_glbl(c, pb, fake_atom);
1509 st->codec->width = sc->width;
1510 st->codec->height = sc->height;
1513 static uint32_t yuv_to_rgba(uint32_t ycbcr)
1518 y = (ycbcr >> 16) & 0xFF;
1519 cr = (ycbcr >> 8) & 0xFF;
1522 b = av_clip_uint8(1.164 * (y - 16) + 2.018 * (cb - 128));
1523 g = av_clip_uint8(1.164 * (y - 16) - 0.813 * (cr - 128) - 0.391 * (cb - 128));
1524 r = av_clip_uint8(1.164 * (y - 16) + 1.596 * (cr - 128));
1526 return (r << 16) | (g << 8) | b;
1529 static int mov_rewrite_dvd_sub_extradata(AVStream *st)
1531 char buf[256] = {0};
1532 uint8_t *src = st->codec->extradata;
1535 if (st->codec->extradata_size != 64)
1538 if (st->codec->width > 0 && st->codec->height > 0)
1539 snprintf(buf, sizeof(buf), "size: %dx%d\n",
1540 st->codec->width, st->codec->height);
1541 av_strlcat(buf, "palette: ", sizeof(buf));
1543 for (i = 0; i < 16; i++) {
1544 uint32_t yuv = AV_RB32(src + i * 4);
1545 uint32_t rgba = yuv_to_rgba(yuv);
1547 av_strlcatf(buf, sizeof(buf), "%06"PRIx32"%s", rgba, i != 15 ? ", " : "");
1550 if (av_strlcat(buf, "\n", sizeof(buf)) >= sizeof(buf))
1553 av_freep(&st->codec->extradata);
1554 st->codec->extradata_size = 0;
1555 st->codec->extradata = av_mallocz(strlen(buf) + FF_INPUT_BUFFER_PADDING_SIZE);
1556 if (!st->codec->extradata)
1557 return AVERROR(ENOMEM);
1558 st->codec->extradata_size = strlen(buf);
1559 memcpy(st->codec->extradata, buf, st->codec->extradata_size);
1564 static int mov_parse_stsd_data(MOVContext *c, AVIOContext *pb,
1565 AVStream *st, MOVStreamContext *sc,
1568 if (st->codec->codec_tag == MKTAG('t','m','c','d')) {
1569 st->codec->extradata_size = size;
1570 st->codec->extradata = av_malloc(size + FF_INPUT_BUFFER_PADDING_SIZE);
1571 if (!st->codec->extradata)
1572 return AVERROR(ENOMEM);
1573 avio_read(pb, st->codec->extradata, size);
1575 /* other codec type, just skip (rtp, mp4s ...) */
1576 avio_skip(pb, size);
1581 static int mov_finalize_stsd_codec(MOVContext *c, AVIOContext *pb,
1582 AVStream *st, MOVStreamContext *sc)
1584 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
1585 !st->codec->sample_rate && sc->time_scale > 1)
1586 st->codec->sample_rate = sc->time_scale;
1588 /* special codec parameters handling */
1589 switch (st->codec->codec_id) {
1590 #if CONFIG_DV_DEMUXER
1591 case AV_CODEC_ID_DVAUDIO:
1592 c->dv_fctx = avformat_alloc_context();
1593 c->dv_demux = avpriv_dv_init_demux(c->dv_fctx);
1595 av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
1596 return AVERROR(ENOMEM);
1598 sc->dv_audio_container = 1;
1599 st->codec->codec_id = AV_CODEC_ID_PCM_S16LE;
1602 /* no ifdef since parameters are always those */
1603 case AV_CODEC_ID_QCELP:
1604 st->codec->channels = 1;
1605 // force sample rate for qcelp when not stored in mov
1606 if (st->codec->codec_tag != MKTAG('Q','c','l','p'))
1607 st->codec->sample_rate = 8000;
1609 case AV_CODEC_ID_AMR_NB:
1610 st->codec->channels = 1;
1611 /* force sample rate for amr, stsd in 3gp does not store sample rate */
1612 st->codec->sample_rate = 8000;
1614 case AV_CODEC_ID_AMR_WB:
1615 st->codec->channels = 1;
1616 st->codec->sample_rate = 16000;
1618 case AV_CODEC_ID_MP2:
1619 case AV_CODEC_ID_MP3:
1620 /* force type after stsd for m1a hdlr */
1621 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
1622 st->need_parsing = AVSTREAM_PARSE_FULL;
1624 case AV_CODEC_ID_GSM:
1625 case AV_CODEC_ID_ADPCM_MS:
1626 case AV_CODEC_ID_ADPCM_IMA_WAV:
1627 case AV_CODEC_ID_ILBC:
1628 st->codec->block_align = sc->bytes_per_frame;
1630 case AV_CODEC_ID_ALAC:
1631 if (st->codec->extradata_size == 36) {
1632 st->codec->channels = AV_RB8 (st->codec->extradata + 21);
1633 st->codec->sample_rate = AV_RB32(st->codec->extradata + 32);
1636 case AV_CODEC_ID_VC1:
1637 st->need_parsing = AVSTREAM_PARSE_FULL;
1645 static int mov_skip_multiple_stsd(MOVContext *c, AVIOContext *pb,
1646 int codec_tag, int format,
1649 int video_codec_id = ff_codec_get_id(ff_codec_movvideo_tags, format);
1652 (codec_tag == AV_RL32("avc1") ||
1653 codec_tag == AV_RL32("hvc1") ||
1654 codec_tag == AV_RL32("hev1") ||
1655 (codec_tag != format &&
1656 (c->fc->video_codec_id ? video_codec_id != c->fc->video_codec_id
1657 : codec_tag != MKTAG('j','p','e','g'))))) {
1658 /* Multiple fourcc, we skip JPEG. This is not correct, we should
1659 * export it as a separate AVStream but this needs a few changes
1660 * in the MOV demuxer, patch welcome. */
1662 av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n");
1663 avio_skip(pb, size);
1670 int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries)
1673 MOVStreamContext *sc;
1674 int pseudo_stream_id;
1676 if (c->fc->nb_streams < 1)
1678 st = c->fc->streams[c->fc->nb_streams-1];
1681 for (pseudo_stream_id = 0;
1682 pseudo_stream_id < entries && !pb->eof_reached;
1683 pseudo_stream_id++) {
1684 //Parsing Sample description table
1686 int ret, dref_id = 1;
1687 MOVAtom a = { AV_RL32("stsd") };
1688 int64_t start_pos = avio_tell(pb);
1689 uint32_t size = avio_rb32(pb); /* size */
1690 uint32_t format = avio_rl32(pb); /* data format */
1693 avio_rb32(pb); /* reserved */
1694 avio_rb16(pb); /* reserved */
1695 dref_id = avio_rb16(pb);
1697 av_log(c->fc, AV_LOG_ERROR, "invalid size %"PRIu32" in stsd\n", size);
1698 return AVERROR_INVALIDDATA;
1701 if (mov_skip_multiple_stsd(c, pb, st->codec->codec_tag, format,
1702 size - (avio_tell(pb) - start_pos)))
1705 sc->pseudo_stream_id = st->codec->codec_tag ? -1 : pseudo_stream_id;
1706 sc->dref_id= dref_id;
1708 id = mov_codec_id(st, format);
1710 av_dlog(c->fc, "size=%"PRIu32" 4CC= %"PRIu8"%"PRIu8"%"PRIu8"%"PRIu8" codec_type=%d\n", size,
1711 (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff,
1712 (format >> 24) & 0xff, st->codec->codec_type);
1714 if (st->codec->codec_type==AVMEDIA_TYPE_VIDEO) {
1715 st->codec->codec_id = id;
1716 mov_parse_stsd_video(c, pb, st, sc);
1717 } else if (st->codec->codec_type==AVMEDIA_TYPE_AUDIO) {
1718 st->codec->codec_id = id;
1719 mov_parse_stsd_audio(c, pb, st, sc);
1720 } else if (st->codec->codec_type==AVMEDIA_TYPE_SUBTITLE){
1721 st->codec->codec_id = id;
1722 mov_parse_stsd_subtitle(c, pb, st, sc,
1723 size - (avio_tell(pb) - start_pos));
1725 ret = mov_parse_stsd_data(c, pb, st, sc,
1726 size - (avio_tell(pb) - start_pos));
1730 /* this will read extra atoms at the end (wave, alac, damr, avcC, hvcC, SMI ...) */
1731 a.size = size - (avio_tell(pb) - start_pos);
1733 if ((ret = mov_read_default(c, pb, a)) < 0)
1735 } else if (a.size > 0)
1736 avio_skip(pb, a.size);
1739 if (pb->eof_reached)
1742 return mov_finalize_stsd_codec(c, pb, st, sc);
1745 static int mov_read_stsd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1749 avio_r8(pb); /* version */
1750 avio_rb24(pb); /* flags */
1751 entries = avio_rb32(pb);
1753 return ff_mov_read_stsd_entries(c, pb, entries);
1756 static int mov_read_stsc(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1759 MOVStreamContext *sc;
1760 unsigned int i, entries;
1762 if (c->fc->nb_streams < 1)
1764 st = c->fc->streams[c->fc->nb_streams-1];
1767 avio_r8(pb); /* version */
1768 avio_rb24(pb); /* flags */
1770 entries = avio_rb32(pb);
1772 av_dlog(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
1776 if (entries >= UINT_MAX / sizeof(*sc->stsc_data))
1777 return AVERROR_INVALIDDATA;
1778 sc->stsc_data = av_malloc(entries * sizeof(*sc->stsc_data));
1780 return AVERROR(ENOMEM);
1782 for (i = 0; i < entries && !pb->eof_reached; i++) {
1783 sc->stsc_data[i].first = avio_rb32(pb);
1784 sc->stsc_data[i].count = avio_rb32(pb);
1785 sc->stsc_data[i].id = avio_rb32(pb);
1790 if (pb->eof_reached)
1796 static int mov_read_stps(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1799 MOVStreamContext *sc;
1800 unsigned i, entries;
1802 if (c->fc->nb_streams < 1)
1804 st = c->fc->streams[c->fc->nb_streams-1];
1807 avio_rb32(pb); // version + flags
1809 entries = avio_rb32(pb);
1810 if (entries >= UINT_MAX / sizeof(*sc->stps_data))
1811 return AVERROR_INVALIDDATA;
1812 sc->stps_data = av_malloc(entries * sizeof(*sc->stps_data));
1814 return AVERROR(ENOMEM);
1816 for (i = 0; i < entries && !pb->eof_reached; i++) {
1817 sc->stps_data[i] = avio_rb32(pb);
1818 //av_dlog(c->fc, "stps %d\n", sc->stps_data[i]);
1823 if (pb->eof_reached)
1829 static int mov_read_stss(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1832 MOVStreamContext *sc;
1833 unsigned int i, entries;
1835 if (c->fc->nb_streams < 1)
1837 st = c->fc->streams[c->fc->nb_streams-1];
1840 avio_r8(pb); /* version */
1841 avio_rb24(pb); /* flags */
1843 entries = avio_rb32(pb);
1845 av_dlog(c->fc, "keyframe_count = %d\n", entries);
1849 sc->keyframe_absent = 1;
1852 if (entries >= UINT_MAX / sizeof(int))
1853 return AVERROR_INVALIDDATA;
1854 av_freep(&sc->keyframes);
1855 sc->keyframes = av_malloc(entries * sizeof(int));
1857 return AVERROR(ENOMEM);
1859 for (i = 0; i < entries && !pb->eof_reached; i++) {
1860 sc->keyframes[i] = avio_rb32(pb);
1861 //av_dlog(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
1864 sc->keyframe_count = i;
1866 if (pb->eof_reached)
1872 static int mov_read_stsz(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1875 MOVStreamContext *sc;
1876 unsigned int i, entries, sample_size, field_size, num_bytes;
1880 if (c->fc->nb_streams < 1)
1882 st = c->fc->streams[c->fc->nb_streams-1];
1885 avio_r8(pb); /* version */
1886 avio_rb24(pb); /* flags */
1888 if (atom.type == MKTAG('s','t','s','z')) {
1889 sample_size = avio_rb32(pb);
1890 if (!sc->sample_size) /* do not overwrite value computed in stsd */
1891 sc->sample_size = sample_size;
1895 avio_rb24(pb); /* reserved */
1896 field_size = avio_r8(pb);
1898 entries = avio_rb32(pb);
1900 av_dlog(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, entries);
1902 sc->sample_count = entries;
1906 if (field_size != 4 && field_size != 8 && field_size != 16 && field_size != 32) {
1907 av_log(c->fc, AV_LOG_ERROR, "Invalid sample field size %d\n", field_size);
1908 return AVERROR_INVALIDDATA;
1913 if (entries >= UINT_MAX / sizeof(int) || entries >= (UINT_MAX - 4) / field_size)
1914 return AVERROR_INVALIDDATA;
1915 sc->sample_sizes = av_malloc(entries * sizeof(int));
1916 if (!sc->sample_sizes)
1917 return AVERROR(ENOMEM);
1919 num_bytes = (entries*field_size+4)>>3;
1921 buf = av_malloc(num_bytes+FF_INPUT_BUFFER_PADDING_SIZE);
1923 av_freep(&sc->sample_sizes);
1924 return AVERROR(ENOMEM);
1927 if (avio_read(pb, buf, num_bytes) < num_bytes) {
1928 av_freep(&sc->sample_sizes);
1930 return AVERROR_INVALIDDATA;
1933 init_get_bits(&gb, buf, 8*num_bytes);
1935 for (i = 0; i < entries && !pb->eof_reached; i++) {
1936 sc->sample_sizes[i] = get_bits_long(&gb, field_size);
1937 sc->data_size += sc->sample_sizes[i];
1940 sc->sample_count = i;
1942 if (pb->eof_reached)
1949 static int mov_read_stts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1952 MOVStreamContext *sc;
1953 unsigned int i, entries;
1955 int64_t total_sample_count=0;
1957 if (c->fc->nb_streams < 1)
1959 st = c->fc->streams[c->fc->nb_streams-1];
1962 avio_r8(pb); /* version */
1963 avio_rb24(pb); /* flags */
1964 entries = avio_rb32(pb);
1966 av_dlog(c->fc, "track[%i].stts.entries = %i\n",
1967 c->fc->nb_streams-1, entries);
1971 if (entries >= UINT_MAX / sizeof(*sc->stts_data))
1972 return AVERROR(EINVAL);
1974 av_free(sc->stts_data);
1975 sc->stts_data = av_malloc(entries * sizeof(*sc->stts_data));
1977 return AVERROR(ENOMEM);
1979 for (i = 0; i < entries && !pb->eof_reached; i++) {
1980 int sample_duration;
1983 sample_count=avio_rb32(pb);
1984 sample_duration = avio_rb32(pb);
1985 if (sample_count < 0) {
1986 av_log(c->fc, AV_LOG_ERROR, "Invalid sample_count=%d\n", sample_count);
1987 return AVERROR_INVALIDDATA;
1989 sc->stts_data[i].count= sample_count;
1990 sc->stts_data[i].duration= sample_duration;
1992 av_dlog(c->fc, "sample_count=%d, sample_duration=%d\n",
1993 sample_count, sample_duration);
1995 duration+=(int64_t)sample_duration*sample_count;
1996 total_sample_count+=sample_count;
2001 if (pb->eof_reached)
2004 st->nb_frames= total_sample_count;
2006 st->duration= duration;
2007 sc->track_end = duration;
2011 static int mov_read_ctts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2014 MOVStreamContext *sc;
2015 unsigned int i, entries;
2017 if (c->fc->nb_streams < 1)
2019 st = c->fc->streams[c->fc->nb_streams-1];
2022 avio_r8(pb); /* version */
2023 avio_rb24(pb); /* flags */
2024 entries = avio_rb32(pb);
2026 av_dlog(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
2030 if (entries >= UINT_MAX / sizeof(*sc->ctts_data))
2031 return AVERROR_INVALIDDATA;
2032 sc->ctts_data = av_malloc(entries * sizeof(*sc->ctts_data));
2034 return AVERROR(ENOMEM);
2036 for (i = 0; i < entries && !pb->eof_reached; i++) {
2037 int count =avio_rb32(pb);
2038 int duration =avio_rb32(pb);
2040 sc->ctts_data[i].count = count;
2041 sc->ctts_data[i].duration= duration;
2043 sc->dts_shift = FFMAX(sc->dts_shift, -duration);
2048 if (pb->eof_reached)
2051 av_dlog(c->fc, "dts shift %d\n", sc->dts_shift);
2056 static int mov_read_sbgp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2059 MOVStreamContext *sc;
2060 unsigned int i, entries;
2062 uint32_t grouping_type;
2064 if (c->fc->nb_streams < 1)
2066 st = c->fc->streams[c->fc->nb_streams-1];
2069 version = avio_r8(pb); /* version */
2070 avio_rb24(pb); /* flags */
2071 grouping_type = avio_rl32(pb);
2072 if (grouping_type != MKTAG( 'r','a','p',' '))
2073 return 0; /* only support 'rap ' grouping */
2075 avio_rb32(pb); /* grouping_type_parameter */
2077 entries = avio_rb32(pb);
2080 if (entries >= UINT_MAX / sizeof(*sc->rap_group))
2081 return AVERROR_INVALIDDATA;
2082 sc->rap_group = av_malloc(entries * sizeof(*sc->rap_group));
2084 return AVERROR(ENOMEM);
2086 for (i = 0; i < entries && !pb->eof_reached; i++) {
2087 sc->rap_group[i].count = avio_rb32(pb); /* sample_count */
2088 sc->rap_group[i].index = avio_rb32(pb); /* group_description_index */
2091 sc->rap_group_count = i;
2093 return pb->eof_reached ? AVERROR_EOF : 0;
2096 static void mov_build_index(MOVContext *mov, AVStream *st)
2098 MOVStreamContext *sc = st->priv_data;
2099 int64_t current_offset;
2100 int64_t current_dts = 0;
2101 unsigned int stts_index = 0;
2102 unsigned int stsc_index = 0;
2103 unsigned int stss_index = 0;
2104 unsigned int stps_index = 0;
2106 uint64_t stream_size = 0;
2108 /* adjust first dts according to edit list */
2109 if (sc->time_offset && mov->time_scale > 0) {
2110 if (sc->time_offset < 0)
2111 sc->time_offset = av_rescale(sc->time_offset, sc->time_scale, mov->time_scale);
2112 current_dts = -sc->time_offset;
2113 if (sc->ctts_data && sc->stts_data && sc->stts_data[0].duration &&
2114 sc->ctts_data[0].duration / sc->stts_data[0].duration > 16) {
2115 /* more than 16 frames delay, dts are likely wrong
2116 this happens with files created by iMovie */
2118 st->codec->has_b_frames = 1;
2122 /* only use old uncompressed audio chunk demuxing when stts specifies it */
2123 if (!(st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
2124 sc->stts_count == 1 && sc->stts_data[0].duration == 1)) {
2125 unsigned int current_sample = 0;
2126 unsigned int stts_sample = 0;
2127 unsigned int sample_size;
2128 unsigned int distance = 0;
2129 unsigned int rap_group_index = 0;
2130 unsigned int rap_group_sample = 0;
2131 int rap_group_present = sc->rap_group_count && sc->rap_group;
2132 int key_off = (sc->keyframes && sc->keyframes[0] > 0) || (sc->stps_data && sc->stps_data[0] > 0);
2134 current_dts -= sc->dts_shift;
2136 if (!sc->sample_count)
2138 if (sc->sample_count >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries)
2140 if (av_reallocp_array(&st->index_entries,
2141 st->nb_index_entries + sc->sample_count,
2142 sizeof(*st->index_entries)) < 0) {
2143 st->nb_index_entries = 0;
2146 st->index_entries_allocated_size = (st->nb_index_entries + sc->sample_count) * sizeof(*st->index_entries);
2148 for (i = 0; i < sc->chunk_count; i++) {
2149 current_offset = sc->chunk_offsets[i];
2150 while (stsc_index + 1 < sc->stsc_count &&
2151 i + 1 == sc->stsc_data[stsc_index + 1].first)
2153 for (j = 0; j < sc->stsc_data[stsc_index].count; j++) {
2155 if (current_sample >= sc->sample_count) {
2156 av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
2160 if (!sc->keyframe_absent && (!sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index])) {
2162 if (stss_index + 1 < sc->keyframe_count)
2164 } else if (sc->stps_count && current_sample+key_off == sc->stps_data[stps_index]) {
2166 if (stps_index + 1 < sc->stps_count)
2169 if (rap_group_present && rap_group_index < sc->rap_group_count) {
2170 if (sc->rap_group[rap_group_index].index > 0)
2172 if (++rap_group_sample == sc->rap_group[rap_group_index].count) {
2173 rap_group_sample = 0;
2179 sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
2180 if (sc->pseudo_stream_id == -1 ||
2181 sc->stsc_data[stsc_index].id - 1 == sc->pseudo_stream_id) {
2182 AVIndexEntry *e = &st->index_entries[st->nb_index_entries++];
2183 e->pos = current_offset;
2184 e->timestamp = current_dts;
2185 e->size = sample_size;
2186 e->min_distance = distance;
2187 e->flags = keyframe ? AVINDEX_KEYFRAME : 0;
2188 av_dlog(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
2189 "size %d, distance %d, keyframe %d\n", st->index, current_sample,
2190 current_offset, current_dts, sample_size, distance, keyframe);
2193 current_offset += sample_size;
2194 stream_size += sample_size;
2195 current_dts += sc->stts_data[stts_index].duration;
2199 if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
2205 if (st->duration > 0)
2206 st->codec->bit_rate = stream_size*8*sc->time_scale/st->duration;
2208 unsigned chunk_samples, total = 0;
2210 // compute total chunk count
2211 for (i = 0; i < sc->stsc_count; i++) {
2212 unsigned count, chunk_count;
2214 chunk_samples = sc->stsc_data[i].count;
2215 if (i != sc->stsc_count - 1 &&
2216 sc->samples_per_frame && chunk_samples % sc->samples_per_frame) {
2217 av_log(mov->fc, AV_LOG_ERROR, "error unaligned chunk\n");
2221 if (sc->samples_per_frame >= 160) { // gsm
2222 count = chunk_samples / sc->samples_per_frame;
2223 } else if (sc->samples_per_frame > 1) {
2224 unsigned samples = (1024/sc->samples_per_frame)*sc->samples_per_frame;
2225 count = (chunk_samples+samples-1) / samples;
2227 count = (chunk_samples+1023) / 1024;
2230 if (i < sc->stsc_count - 1)
2231 chunk_count = sc->stsc_data[i+1].first - sc->stsc_data[i].first;
2233 chunk_count = sc->chunk_count - (sc->stsc_data[i].first - 1);
2234 total += chunk_count * count;
2237 av_dlog(mov->fc, "chunk count %d\n", total);
2238 if (total >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries)
2240 if (av_reallocp_array(&st->index_entries,
2241 st->nb_index_entries + total,
2242 sizeof(*st->index_entries)) < 0) {
2243 st->nb_index_entries = 0;
2246 st->index_entries_allocated_size = (st->nb_index_entries + total) * sizeof(*st->index_entries);
2249 for (i = 0; i < sc->chunk_count; i++) {
2250 current_offset = sc->chunk_offsets[i];
2251 if (stsc_index + 1 < sc->stsc_count &&
2252 i + 1 == sc->stsc_data[stsc_index + 1].first)
2254 chunk_samples = sc->stsc_data[stsc_index].count;
2256 while (chunk_samples > 0) {
2258 unsigned size, samples;
2260 if (sc->samples_per_frame >= 160) { // gsm
2261 samples = sc->samples_per_frame;
2262 size = sc->bytes_per_frame;
2264 if (sc->samples_per_frame > 1) {
2265 samples = FFMIN((1024 / sc->samples_per_frame)*
2266 sc->samples_per_frame, chunk_samples);
2267 size = (samples / sc->samples_per_frame) * sc->bytes_per_frame;
2269 samples = FFMIN(1024, chunk_samples);
2270 size = samples * sc->sample_size;
2274 if (st->nb_index_entries >= total) {
2275 av_log(mov->fc, AV_LOG_ERROR, "wrong chunk count %d\n", total);
2278 e = &st->index_entries[st->nb_index_entries++];
2279 e->pos = current_offset;
2280 e->timestamp = current_dts;
2282 e->min_distance = 0;
2283 e->flags = AVINDEX_KEYFRAME;
2284 av_dlog(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", "
2285 "size %d, duration %d\n", st->index, i, current_offset, current_dts,
2288 current_offset += size;
2289 current_dts += samples;
2290 chunk_samples -= samples;
2296 static int mov_open_dref(AVIOContext **pb, char *src, MOVDref *ref,
2297 AVIOInterruptCB *int_cb)
2299 /* try relative path, we do not try the absolute because it can leak information about our
2300 system to an attacker */
2301 if (ref->nlvl_to > 0 && ref->nlvl_from > 0) {
2302 char filename[1024];
2306 /* find a source dir */
2307 src_path = strrchr(src, '/');
2313 /* find a next level down to target */
2314 for (i = 0, l = strlen(ref->path) - 1; l >= 0; l--)
2315 if (ref->path[l] == '/') {
2316 if (i == ref->nlvl_to - 1)
2322 /* compose filename if next level down to target was found */
2323 if (i == ref->nlvl_to - 1 && src_path - src < sizeof(filename)) {
2324 memcpy(filename, src, src_path - src);
2325 filename[src_path - src] = 0;
2327 for (i = 1; i < ref->nlvl_from; i++)
2328 av_strlcat(filename, "../", 1024);
2330 av_strlcat(filename, ref->path + l + 1, 1024);
2332 if (!avio_open2(pb, filename, AVIO_FLAG_READ, int_cb, NULL))
2337 return AVERROR(ENOENT);
2340 static int mov_read_trak(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2343 MOVStreamContext *sc;
2346 st = avformat_new_stream(c->fc, NULL);
2347 if (!st) return AVERROR(ENOMEM);
2348 st->id = c->fc->nb_streams;
2349 sc = av_mallocz(sizeof(MOVStreamContext));
2350 if (!sc) return AVERROR(ENOMEM);
2353 st->codec->codec_type = AVMEDIA_TYPE_DATA;
2354 sc->ffindex = st->index;
2356 if ((ret = mov_read_default(c, pb, atom)) < 0)
2360 if (sc->chunk_count && (!sc->stts_count || !sc->stsc_count ||
2361 (!sc->sample_size && !sc->sample_count))) {
2362 av_log(c->fc, AV_LOG_ERROR, "stream %d, missing mandatory atoms, broken header\n",
2367 if (sc->time_scale <= 0) {
2368 av_log(c->fc, AV_LOG_WARNING, "stream %d, timescale not set\n", st->index);
2369 sc->time_scale = c->time_scale;
2370 if (sc->time_scale <= 0)
2374 avpriv_set_pts_info(st, 64, 1, sc->time_scale);
2376 mov_build_index(c, st);
2378 if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) {
2379 MOVDref *dref = &sc->drefs[sc->dref_id - 1];
2380 if (mov_open_dref(&sc->pb, c->fc->filename, dref, &c->fc->interrupt_callback) < 0)
2381 av_log(c->fc, AV_LOG_ERROR,
2382 "stream %d, error opening alias: path='%s', dir='%s', "
2383 "filename='%s', volume='%s', nlvl_from=%d, nlvl_to=%d\n",
2384 st->index, dref->path, dref->dir, dref->filename,
2385 dref->volume, dref->nlvl_from, dref->nlvl_to);
2389 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2390 if (!st->sample_aspect_ratio.num &&
2391 (st->codec->width != sc->width || st->codec->height != sc->height)) {
2392 st->sample_aspect_ratio = av_d2q(((double)st->codec->height * sc->width) /
2393 ((double)st->codec->width * sc->height), INT_MAX);
2397 // done for ai5q, ai52, ai55, ai1q, ai12 and ai15.
2398 if (!st->codec->extradata_size && st->codec->codec_id == AV_CODEC_ID_H264 &&
2399 TAG_IS_AVCI(st->codec->codec_tag)) {
2400 ret = ff_generate_avci_extradata(st);
2405 switch (st->codec->codec_id) {
2406 #if CONFIG_H261_DECODER
2407 case AV_CODEC_ID_H261:
2409 #if CONFIG_H263_DECODER
2410 case AV_CODEC_ID_H263:
2412 #if CONFIG_MPEG4_DECODER
2413 case AV_CODEC_ID_MPEG4:
2415 st->codec->width = 0; /* let decoder init width/height */
2416 st->codec->height= 0;
2420 /* Do not need those anymore. */
2421 av_freep(&sc->chunk_offsets);
2422 av_freep(&sc->stsc_data);
2423 av_freep(&sc->sample_sizes);
2424 av_freep(&sc->keyframes);
2425 av_freep(&sc->stts_data);
2426 av_freep(&sc->stps_data);
2427 av_freep(&sc->rap_group);
2432 static int mov_read_ilst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2435 c->itunes_metadata = 1;
2436 ret = mov_read_default(c, pb, atom);
2437 c->itunes_metadata = 0;
2441 static int mov_read_replaygain(MOVContext *c, AVIOContext *pb, int size)
2443 int64_t end = avio_tell(pb) + size;
2444 uint8_t *key = NULL, *val = NULL;
2447 for (i = 0; i < 2; i++) {
2451 if (end - avio_tell(pb) <= 12)
2454 len = avio_rb32(pb);
2455 tag = avio_rl32(pb);
2456 avio_skip(pb, 4); // flags
2458 if (len < 12 || len - 12 > end - avio_tell(pb))
2462 if (tag == MKTAG('n', 'a', 'm', 'e'))
2464 else if (tag == MKTAG('d', 'a', 't', 'a') && len > 4) {
2471 *p = av_malloc(len + 1);
2474 avio_read(pb, *p, len);
2479 av_dict_set(&c->fc->metadata, key, val,
2480 AV_DICT_DONT_STRDUP_KEY | AV_DICT_DONT_STRDUP_VAL);
2484 avio_seek(pb, end, SEEK_SET);
2490 static int mov_read_custom(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2492 int64_t end = avio_tell(pb) + atom.size;
2498 len = avio_rb32(pb);
2499 tag = avio_rl32(pb);
2501 if (len > atom.size)
2504 if (tag == MKTAG('m', 'e', 'a', 'n') && len > 12) {
2505 uint8_t domain[128];
2508 avio_skip(pb, 4); // flags
2511 domain_len = avio_get_str(pb, len, domain, sizeof(domain));
2512 avio_skip(pb, len - domain_len);
2513 if (!strcmp(domain, "org.hydrogenaudio.replaygain"))
2514 return mov_read_replaygain(c, pb, end - avio_tell(pb));
2518 av_log(c->fc, AV_LOG_VERBOSE,
2519 "Unhandled or malformed custom metadata of size %"PRId64"\n", atom.size);
2523 static int mov_read_meta(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2525 while (atom.size > 8) {
2526 uint32_t tag = avio_rl32(pb);
2528 if (tag == MKTAG('h','d','l','r')) {
2529 avio_seek(pb, -8, SEEK_CUR);
2531 return mov_read_default(c, pb, atom);
2537 static int mov_read_tkhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2542 int64_t disp_transform[2];
2543 int display_matrix[3][3];
2545 MOVStreamContext *sc;
2549 if (c->fc->nb_streams < 1)
2551 st = c->fc->streams[c->fc->nb_streams-1];
2554 version = avio_r8(pb);
2555 flags = avio_rb24(pb);
2556 st->disposition |= (flags & MOV_TKHD_FLAG_ENABLED) ? AV_DISPOSITION_DEFAULT : 0;
2562 avio_rb32(pb); /* creation time */
2563 avio_rb32(pb); /* modification time */
2565 st->id = (int)avio_rb32(pb); /* track id (NOT 0 !)*/
2566 avio_rb32(pb); /* reserved */
2568 /* highlevel (considering edits) duration in movie timebase */
2569 (version == 1) ? avio_rb64(pb) : avio_rb32(pb);
2570 avio_rb32(pb); /* reserved */
2571 avio_rb32(pb); /* reserved */
2573 avio_rb16(pb); /* layer */
2574 avio_rb16(pb); /* alternate group */
2575 avio_rb16(pb); /* volume */
2576 avio_rb16(pb); /* reserved */
2578 //read in the display matrix (outlined in ISO 14496-12, Section 6.2.2)
2579 // they're kept in fixed point format through all calculations
2580 // save u,v,z to store the whole matrix in the AV_PKT_DATA_DISPLAYMATRIX
2581 // side data, but the scale factor is not needed to calculate aspect ratio
2582 for (i = 0; i < 3; i++) {
2583 display_matrix[i][0] = avio_rb32(pb); // 16.16 fixed point
2584 display_matrix[i][1] = avio_rb32(pb); // 16.16 fixed point
2585 display_matrix[i][2] = avio_rb32(pb); // 2.30 fixed point
2588 width = avio_rb32(pb); // 16.16 fixed point track width
2589 height = avio_rb32(pb); // 16.16 fixed point track height
2590 sc->width = width >> 16;
2591 sc->height = height >> 16;
2593 // save the matrix when it is not the default identity
2594 if (display_matrix[0][0] != (1 << 16) ||
2595 display_matrix[1][1] != (1 << 16) ||
2596 display_matrix[2][2] != (1 << 30) ||
2597 display_matrix[0][1] || display_matrix[0][2] ||
2598 display_matrix[1][0] || display_matrix[1][2] ||
2599 display_matrix[2][0] || display_matrix[2][1]) {
2602 av_freep(&sc->display_matrix);
2603 sc->display_matrix = av_malloc(sizeof(int32_t) * 9);
2604 if (!sc->display_matrix)
2605 return AVERROR(ENOMEM);
2607 for (i = 0; i < 3; i++)
2608 for (j = 0; j < 3; j++)
2609 sc->display_matrix[i * 3 + j] = display_matrix[j][i];
2612 // transform the display width/height according to the matrix
2613 // skip this when the display matrix is the identity one
2614 // to keep the same scale, use [width height 1<<16]
2615 if (width && height && sc->display_matrix) {
2616 for (i = 0; i < 2; i++)
2618 (int64_t) width * display_matrix[0][i] +
2619 (int64_t) height * display_matrix[1][i] +
2620 ((int64_t) display_matrix[2][i] << 16);
2622 //sample aspect ratio is new width/height divided by old width/height
2623 if (disp_transform[0] > 0 && disp_transform[1] > 0)
2624 st->sample_aspect_ratio = av_d2q(
2625 ((double) disp_transform[0] * height) /
2626 ((double) disp_transform[1] * width), INT_MAX);
2631 static int mov_read_tfhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2633 MOVFragment *frag = &c->fragment;
2634 MOVTrackExt *trex = NULL;
2635 int flags, track_id, i;
2637 avio_r8(pb); /* version */
2638 flags = avio_rb24(pb);
2640 track_id = avio_rb32(pb);
2642 return AVERROR_INVALIDDATA;
2643 frag->track_id = track_id;
2644 for (i = 0; i < c->trex_count; i++)
2645 if (c->trex_data[i].track_id == frag->track_id) {
2646 trex = &c->trex_data[i];
2650 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding trex\n");
2651 return AVERROR_INVALIDDATA;
2654 frag->base_data_offset = flags & MOV_TFHD_BASE_DATA_OFFSET ?
2655 avio_rb64(pb) : flags & MOV_TFHD_DEFAULT_BASE_IS_MOOF ?
2656 frag->moof_offset : frag->implicit_offset;
2657 frag->stsd_id = flags & MOV_TFHD_STSD_ID ? avio_rb32(pb) : trex->stsd_id;
2659 frag->duration = flags & MOV_TFHD_DEFAULT_DURATION ?
2660 avio_rb32(pb) : trex->duration;
2661 frag->size = flags & MOV_TFHD_DEFAULT_SIZE ?
2662 avio_rb32(pb) : trex->size;
2663 frag->flags = flags & MOV_TFHD_DEFAULT_FLAGS ?
2664 avio_rb32(pb) : trex->flags;
2665 av_dlog(c->fc, "frag flags 0x%x\n", frag->flags);
2669 static int mov_read_chap(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2671 c->chapter_track = avio_rb32(pb);
2675 static int mov_read_trex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2680 if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data))
2681 return AVERROR_INVALIDDATA;
2682 if ((err = av_reallocp_array(&c->trex_data, c->trex_count + 1,
2683 sizeof(*c->trex_data))) < 0) {
2687 trex = &c->trex_data[c->trex_count++];
2688 avio_r8(pb); /* version */
2689 avio_rb24(pb); /* flags */
2690 trex->track_id = avio_rb32(pb);
2691 trex->stsd_id = avio_rb32(pb);
2692 trex->duration = avio_rb32(pb);
2693 trex->size = avio_rb32(pb);
2694 trex->flags = avio_rb32(pb);
2698 static int mov_read_tfdt(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2700 MOVFragment *frag = &c->fragment;
2701 AVStream *st = NULL;
2702 MOVStreamContext *sc;
2705 for (i = 0; i < c->fc->nb_streams; i++) {
2706 if (c->fc->streams[i]->id == frag->track_id) {
2707 st = c->fc->streams[i];
2712 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id);
2713 return AVERROR_INVALIDDATA;
2716 if (sc->pseudo_stream_id + 1 != frag->stsd_id)
2718 version = avio_r8(pb);
2719 avio_rb24(pb); /* flags */
2721 sc->track_end = avio_rb64(pb);
2723 sc->track_end = avio_rb32(pb);
2728 static int mov_read_trun(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2730 MOVFragment *frag = &c->fragment;
2731 AVStream *st = NULL;
2732 MOVStreamContext *sc;
2736 int data_offset = 0;
2737 unsigned entries, first_sample_flags = frag->flags;
2738 int flags, distance, i, found_keyframe = 0, err;
2740 for (i = 0; i < c->fc->nb_streams; i++) {
2741 if (c->fc->streams[i]->id == frag->track_id) {
2742 st = c->fc->streams[i];
2747 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id);
2748 return AVERROR_INVALIDDATA;
2751 if (sc->pseudo_stream_id+1 != frag->stsd_id)
2753 avio_r8(pb); /* version */
2754 flags = avio_rb24(pb);
2755 entries = avio_rb32(pb);
2756 av_dlog(c->fc, "flags 0x%x entries %d\n", flags, entries);
2758 /* Always assume the presence of composition time offsets.
2759 * Without this assumption, for instance, we cannot deal with a track in fragmented movies that meet the following.
2760 * 1) in the initial movie, there are no samples.
2761 * 2) in the first movie fragment, there is only one sample without composition time offset.
2762 * 3) in the subsequent movie fragments, there are samples with composition time offset. */
2763 if (!sc->ctts_count && sc->sample_count)
2765 /* Complement ctts table if moov atom doesn't have ctts atom. */
2766 ctts_data = av_realloc(NULL, sizeof(*sc->ctts_data));
2768 return AVERROR(ENOMEM);
2769 sc->ctts_data = ctts_data;
2770 sc->ctts_data[sc->ctts_count].count = sc->sample_count;
2771 sc->ctts_data[sc->ctts_count].duration = 0;
2774 if ((uint64_t)entries+sc->ctts_count >= UINT_MAX/sizeof(*sc->ctts_data))
2775 return AVERROR_INVALIDDATA;
2776 if ((err = av_reallocp_array(&sc->ctts_data, entries + sc->ctts_count,
2777 sizeof(*sc->ctts_data))) < 0) {
2781 if (flags & MOV_TRUN_DATA_OFFSET) data_offset = avio_rb32(pb);
2782 if (flags & MOV_TRUN_FIRST_SAMPLE_FLAGS) first_sample_flags = avio_rb32(pb);
2783 dts = sc->track_end - sc->time_offset;
2784 offset = frag->base_data_offset + data_offset;
2786 av_dlog(c->fc, "first sample flags 0x%x\n", first_sample_flags);
2787 for (i = 0; i < entries && !pb->eof_reached; i++) {
2788 unsigned sample_size = frag->size;
2789 int sample_flags = i ? frag->flags : first_sample_flags;
2790 unsigned sample_duration = frag->duration;
2793 if (flags & MOV_TRUN_SAMPLE_DURATION) sample_duration = avio_rb32(pb);
2794 if (flags & MOV_TRUN_SAMPLE_SIZE) sample_size = avio_rb32(pb);
2795 if (flags & MOV_TRUN_SAMPLE_FLAGS) sample_flags = avio_rb32(pb);
2796 sc->ctts_data[sc->ctts_count].count = 1;
2797 sc->ctts_data[sc->ctts_count].duration = (flags & MOV_TRUN_SAMPLE_CTS) ?
2800 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
2802 else if (!found_keyframe)
2803 keyframe = found_keyframe =
2804 !(sample_flags & (MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC |
2805 MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES));
2808 av_add_index_entry(st, offset, dts, sample_size, distance,
2809 keyframe ? AVINDEX_KEYFRAME : 0);
2810 av_dlog(c->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
2811 "size %d, distance %d, keyframe %d\n", st->index, sc->sample_count+i,
2812 offset, dts, sample_size, distance, keyframe);
2814 dts += sample_duration;
2815 offset += sample_size;
2816 sc->data_size += sample_size;
2819 if (pb->eof_reached)
2822 frag->implicit_offset = offset;
2823 st->duration = sc->track_end = dts + sc->time_offset;
2827 /* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
2828 /* like the files created with Adobe Premiere 5.0, for samples see */
2829 /* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
2830 static int mov_read_wide(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2835 return 0; /* continue */
2836 if (avio_rb32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
2837 avio_skip(pb, atom.size - 4);
2840 atom.type = avio_rl32(pb);
2842 if (atom.type != MKTAG('m','d','a','t')) {
2843 avio_skip(pb, atom.size);
2846 err = mov_read_mdat(c, pb, atom);
2850 static int mov_read_cmov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2855 uint8_t *moov_data; /* uncompressed data */
2856 long cmov_len, moov_len;
2859 avio_rb32(pb); /* dcom atom */
2860 if (avio_rl32(pb) != MKTAG('d','c','o','m'))
2861 return AVERROR_INVALIDDATA;
2862 if (avio_rl32(pb) != MKTAG('z','l','i','b')) {
2863 av_log(c->fc, AV_LOG_ERROR, "unknown compression for cmov atom !");
2864 return AVERROR_INVALIDDATA;
2866 avio_rb32(pb); /* cmvd atom */
2867 if (avio_rl32(pb) != MKTAG('c','m','v','d'))
2868 return AVERROR_INVALIDDATA;
2869 moov_len = avio_rb32(pb); /* uncompressed size */
2870 cmov_len = atom.size - 6 * 4;
2872 cmov_data = av_malloc(cmov_len);
2874 return AVERROR(ENOMEM);
2875 moov_data = av_malloc(moov_len);
2878 return AVERROR(ENOMEM);
2880 avio_read(pb, cmov_data, cmov_len);
2881 if (uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
2882 goto free_and_return;
2883 if (ffio_init_context(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
2884 goto free_and_return;
2885 atom.type = MKTAG('m','o','o','v');
2886 atom.size = moov_len;
2887 ret = mov_read_default(c, &ctx, atom);
2893 av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
2894 return AVERROR(ENOSYS);
2898 /* edit list atom */
2899 static int mov_read_elst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2901 MOVStreamContext *sc;
2902 int i, edit_count, version;
2904 if (c->fc->nb_streams < 1)
2906 sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
2908 version = avio_r8(pb); /* version */
2909 avio_rb24(pb); /* flags */
2910 edit_count = avio_rb32(pb); /* entries */
2912 if ((uint64_t)edit_count*12+8 > atom.size)
2913 return AVERROR_INVALIDDATA;
2915 for (i=0; i<edit_count; i++){
2919 duration = avio_rb64(pb);
2920 time = avio_rb64(pb);
2922 duration = avio_rb32(pb); /* segment duration */
2923 time = (int32_t)avio_rb32(pb); /* media time */
2925 avio_rb32(pb); /* Media rate */
2926 if (i == 0 && time >= -1) {
2927 sc->time_offset = time != -1 ? time : -duration;
2932 av_log(c->fc, AV_LOG_WARNING, "multiple edit list entries, "
2933 "a/v desync might occur, patch welcome\n");
2935 av_dlog(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, edit_count);
2939 static const MOVParseTableEntry mov_default_parse_table[] = {
2940 { MKTAG('a','v','s','s'), mov_read_extradata },
2941 { MKTAG('c','h','p','l'), mov_read_chpl },
2942 { MKTAG('c','o','6','4'), mov_read_stco },
2943 { MKTAG('c','o','l','r'), mov_read_colr },
2944 { MKTAG('c','t','t','s'), mov_read_ctts }, /* composition time to sample */
2945 { MKTAG('d','i','n','f'), mov_read_default },
2946 { MKTAG('d','r','e','f'), mov_read_dref },
2947 { MKTAG('e','d','t','s'), mov_read_default },
2948 { MKTAG('e','l','s','t'), mov_read_elst },
2949 { MKTAG('e','n','d','a'), mov_read_enda },
2950 { MKTAG('f','i','e','l'), mov_read_fiel },
2951 { MKTAG('f','t','y','p'), mov_read_ftyp },
2952 { MKTAG('g','l','b','l'), mov_read_glbl },
2953 { MKTAG('h','d','l','r'), mov_read_hdlr },
2954 { MKTAG('i','l','s','t'), mov_read_ilst },
2955 { MKTAG('j','p','2','h'), mov_read_extradata },
2956 { MKTAG('m','d','a','t'), mov_read_mdat },
2957 { MKTAG('m','d','h','d'), mov_read_mdhd },
2958 { MKTAG('m','d','i','a'), mov_read_default },
2959 { MKTAG('m','e','t','a'), mov_read_meta },
2960 { MKTAG('m','i','n','f'), mov_read_default },
2961 { MKTAG('m','o','o','f'), mov_read_moof },
2962 { MKTAG('m','o','o','v'), mov_read_moov },
2963 { MKTAG('m','v','e','x'), mov_read_default },
2964 { MKTAG('m','v','h','d'), mov_read_mvhd },
2965 { MKTAG('S','M','I',' '), mov_read_smi }, /* Sorenson extension ??? */
2966 { MKTAG('a','l','a','c'), mov_read_extradata }, /* alac specific atom */
2967 { MKTAG('a','v','c','C'), mov_read_glbl },
2968 { MKTAG('p','a','s','p'), mov_read_pasp },
2969 { MKTAG('s','t','b','l'), mov_read_default },
2970 { MKTAG('s','t','c','o'), mov_read_stco },
2971 { MKTAG('s','t','p','s'), mov_read_stps },
2972 { MKTAG('s','t','r','f'), mov_read_strf },
2973 { MKTAG('s','t','s','c'), mov_read_stsc },
2974 { MKTAG('s','t','s','d'), mov_read_stsd }, /* sample description */
2975 { MKTAG('s','t','s','s'), mov_read_stss }, /* sync sample */
2976 { MKTAG('s','t','s','z'), mov_read_stsz }, /* sample size */
2977 { MKTAG('s','t','t','s'), mov_read_stts },
2978 { MKTAG('s','t','z','2'), mov_read_stsz }, /* compact sample size */
2979 { MKTAG('t','k','h','d'), mov_read_tkhd }, /* track header */
2980 { MKTAG('t','f','d','t'), mov_read_tfdt },
2981 { MKTAG('t','f','h','d'), mov_read_tfhd }, /* track fragment header */
2982 { MKTAG('t','r','a','k'), mov_read_trak },
2983 { MKTAG('t','r','a','f'), mov_read_default },
2984 { MKTAG('t','r','e','f'), mov_read_default },
2985 { MKTAG('c','h','a','p'), mov_read_chap },
2986 { MKTAG('t','r','e','x'), mov_read_trex },
2987 { MKTAG('t','r','u','n'), mov_read_trun },
2988 { MKTAG('u','d','t','a'), mov_read_default },
2989 { MKTAG('w','a','v','e'), mov_read_wave },
2990 { MKTAG('e','s','d','s'), mov_read_esds },
2991 { MKTAG('d','a','c','3'), mov_read_dac3 }, /* AC-3 info */
2992 { MKTAG('d','e','c','3'), mov_read_dec3 }, /* EAC-3 info */
2993 { MKTAG('w','i','d','e'), mov_read_wide }, /* place holder */
2994 { MKTAG('w','f','e','x'), mov_read_wfex },
2995 { MKTAG('c','m','o','v'), mov_read_cmov },
2996 { MKTAG('c','h','a','n'), mov_read_chan }, /* channel layout */
2997 { MKTAG('d','v','c','1'), mov_read_dvc1 },
2998 { MKTAG('s','b','g','p'), mov_read_sbgp },
2999 { MKTAG('h','v','c','C'), mov_read_glbl },
3000 { MKTAG('-','-','-','-'), mov_read_custom },
3004 static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom)
3006 int64_t total_size = 0;
3011 atom.size = INT64_MAX;
3012 while (total_size + 8 < atom.size && !pb->eof_reached) {
3013 int (*parse)(MOVContext*, AVIOContext*, MOVAtom) = NULL;
3016 if (atom.size >= 8) {
3017 a.size = avio_rb32(pb);
3018 a.type = avio_rl32(pb);
3020 av_dlog(c->fc, "type: %08x '%.4s' parent:'%.4s' sz: %"PRId64" %"PRId64" %"PRId64"\n",
3021 a.type, (char*)&a.type, (char*)&atom.type, a.size, total_size, atom.size);
3023 if (a.size == 1) { /* 64 bit extended size */
3024 a.size = avio_rb64(pb) - 8;
3028 a.size = atom.size - total_size;
3035 a.size = FFMIN(a.size, atom.size - total_size);
3037 for (i = 0; mov_default_parse_table[i].type; i++)
3038 if (mov_default_parse_table[i].type == a.type) {
3039 parse = mov_default_parse_table[i].parse;
3043 // container is user data
3044 if (!parse && (atom.type == MKTAG('u','d','t','a') ||
3045 atom.type == MKTAG('i','l','s','t')))
3046 parse = mov_read_udta_string;
3048 if (!parse) { /* skip leaf atoms data */
3049 avio_skip(pb, a.size);
3051 int64_t start_pos = avio_tell(pb);
3053 int err = parse(c, pb, a);
3056 if (c->found_moov && c->found_mdat &&
3057 ((!pb->seekable || c->fc->flags & AVFMT_FLAG_IGNIDX) ||
3058 start_pos + a.size == avio_size(pb))) {
3059 if (!pb->seekable || c->fc->flags & AVFMT_FLAG_IGNIDX)
3060 c->next_root_atom = start_pos + a.size;
3063 left = a.size - avio_tell(pb) + start_pos;
3064 if (left > 0) /* skip garbage at atom end */
3065 avio_skip(pb, left);
3066 else if (left < 0) {
3067 av_log(c->fc, AV_LOG_WARNING,
3068 "overread end of atom '%.4s' by %"PRId64" bytes\n",
3069 (char*)&a.type, -left);
3070 avio_seek(pb, left, SEEK_CUR);
3074 total_size += a.size;
3077 if (total_size < atom.size && atom.size < 0x7ffff)
3078 avio_skip(pb, atom.size - total_size);
3083 static int mov_probe(AVProbeData *p)
3085 unsigned int offset;
3089 /* check file header */
3092 /* ignore invalid offset */
3093 if ((offset + 8) > (unsigned int)p->buf_size)
3095 tag = AV_RL32(p->buf + offset + 4);
3097 /* check for obvious tags */
3098 case MKTAG('j','P',' ',' '): /* jpeg 2000 signature */
3099 case MKTAG('m','o','o','v'):
3100 case MKTAG('m','d','a','t'):
3101 case MKTAG('p','n','o','t'): /* detect movs with preview pics like ew.mov and april.mov */
3102 case MKTAG('u','d','t','a'): /* Packet Video PVAuthor adds this and a lot of more junk */
3103 case MKTAG('f','t','y','p'):
3104 return AVPROBE_SCORE_MAX;
3105 /* those are more common words, so rate then a bit less */
3106 case MKTAG('e','d','i','w'): /* xdcam files have reverted first tags */
3107 case MKTAG('w','i','d','e'):
3108 case MKTAG('f','r','e','e'):
3109 case MKTAG('j','u','n','k'):
3110 case MKTAG('p','i','c','t'):
3111 return AVPROBE_SCORE_MAX - 5;
3112 case MKTAG(0x82,0x82,0x7f,0x7d):
3113 case MKTAG('s','k','i','p'):
3114 case MKTAG('u','u','i','d'):
3115 case MKTAG('p','r','f','l'):
3116 offset = AV_RB32(p->buf+offset) + offset;
3117 /* if we only find those cause probedata is too small at least rate them */
3118 score = AVPROBE_SCORE_EXTENSION;
3121 /* unrecognized tag */
3127 // must be done after parsing all trak because there's no order requirement
3128 static void mov_read_chapters(AVFormatContext *s)
3130 MOVContext *mov = s->priv_data;
3131 AVStream *st = NULL;
3132 MOVStreamContext *sc;
3136 for (i = 0; i < s->nb_streams; i++)
3137 if (s->streams[i]->id == mov->chapter_track) {
3142 av_log(s, AV_LOG_ERROR, "Referenced QT chapter track not found\n");
3146 st->discard = AVDISCARD_ALL;
3148 cur_pos = avio_tell(sc->pb);
3150 for (i = 0; i < st->nb_index_entries; i++) {
3151 AVIndexEntry *sample = &st->index_entries[i];
3152 int64_t end = i+1 < st->nb_index_entries ? st->index_entries[i+1].timestamp : st->duration;
3157 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
3158 av_log(s, AV_LOG_ERROR, "Chapter %d not found in file\n", i);
3162 // the first two bytes are the length of the title
3163 len = avio_rb16(sc->pb);
3164 if (len > sample->size-2)
3166 title_len = 2*len + 1;
3167 if (!(title = av_mallocz(title_len)))
3170 // The samples could theoretically be in any encoding if there's an encd
3171 // atom following, but in practice are only utf-8 or utf-16, distinguished
3172 // instead by the presence of a BOM
3176 ch = avio_rb16(sc->pb);
3178 avio_get_str16be(sc->pb, len, title, title_len);
3179 else if (ch == 0xfffe)
3180 avio_get_str16le(sc->pb, len, title, title_len);
3183 if (len == 1 || len == 2)
3186 avio_get_str(sc->pb, len - 2, title + 2, title_len - 2);
3190 avpriv_new_chapter(s, i, st->time_base, sample->timestamp, end, title);
3194 avio_seek(sc->pb, cur_pos, SEEK_SET);
3197 static int mov_read_close(AVFormatContext *s)
3199 MOVContext *mov = s->priv_data;
3202 for (i = 0; i < s->nb_streams; i++) {
3203 AVStream *st = s->streams[i];
3204 MOVStreamContext *sc = st->priv_data;
3206 av_freep(&sc->ctts_data);
3207 for (j = 0; j < sc->drefs_count; j++) {
3208 av_freep(&sc->drefs[j].path);
3209 av_freep(&sc->drefs[j].dir);
3211 av_freep(&sc->drefs);
3212 if (sc->pb && sc->pb != s->pb)
3215 av_freep(&sc->chunk_offsets);
3216 av_freep(&sc->stsc_data);
3217 av_freep(&sc->sample_sizes);
3218 av_freep(&sc->keyframes);
3219 av_freep(&sc->stts_data);
3220 av_freep(&sc->stps_data);
3221 av_freep(&sc->rap_group);
3222 av_freep(&sc->display_matrix);
3225 if (mov->dv_demux) {
3226 avformat_free_context(mov->dv_fctx);
3227 mov->dv_fctx = NULL;
3230 av_freep(&mov->trex_data);
3235 static int mov_read_header(AVFormatContext *s)
3237 MOVContext *mov = s->priv_data;
3238 AVIOContext *pb = s->pb;
3240 MOVAtom atom = { AV_RL32("root") };
3244 /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
3246 atom.size = avio_size(pb);
3248 atom.size = INT64_MAX;
3250 /* check MOV header */
3251 if ((err = mov_read_default(mov, pb, atom)) < 0) {
3252 av_log(s, AV_LOG_ERROR, "error reading header: %d\n", err);
3256 if (!mov->found_moov) {
3257 av_log(s, AV_LOG_ERROR, "moov atom not found\n");
3259 return AVERROR_INVALIDDATA;
3261 av_dlog(mov->fc, "on_parse_exit_offset=%"PRId64"\n", avio_tell(pb));
3263 if (pb->seekable && mov->chapter_track > 0)
3264 mov_read_chapters(s);
3266 for (i = 0; i < s->nb_streams; i++) {
3267 AVStream *st = s->streams[i];
3268 MOVStreamContext *sc = st->priv_data;
3270 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3271 if (st->codec->width <= 0 || st->codec->height <= 0) {
3272 st->codec->width = sc->width;
3273 st->codec->height = sc->height;
3275 if (st->codec->codec_id == AV_CODEC_ID_DVD_SUBTITLE) {
3276 if ((err = mov_rewrite_dvd_sub_extradata(st)) < 0)
3282 if (mov->trex_data) {
3283 for (i = 0; i < s->nb_streams; i++) {
3284 AVStream *st = s->streams[i];
3285 MOVStreamContext *sc = st->priv_data;
3286 if (st->duration > 0)
3287 st->codec->bit_rate = sc->data_size * 8 * sc->time_scale / st->duration;
3291 for (i = 0; i < s->nb_streams; i++) {
3292 AVStream *st = s->streams[i];
3293 MOVStreamContext *sc = st->priv_data;
3295 switch (st->codec->codec_type) {
3296 case AVMEDIA_TYPE_AUDIO:
3297 err = ff_replaygain_export(st, s->metadata);
3303 case AVMEDIA_TYPE_VIDEO:
3304 if (sc->display_matrix) {
3305 AVPacketSideData *sd, *tmp;
3307 tmp = av_realloc_array(st->side_data,
3308 st->nb_side_data + 1, sizeof(*tmp));
3310 return AVERROR(ENOMEM);
3312 st->side_data = tmp;
3315 sd = &st->side_data[st->nb_side_data - 1];
3316 sd->type = AV_PKT_DATA_DISPLAYMATRIX;
3317 sd->size = sizeof(int32_t) * 9;
3318 sd->data = (uint8_t*)sc->display_matrix;
3319 sc->display_matrix = NULL;
3328 static AVIndexEntry *mov_find_next_sample(AVFormatContext *s, AVStream **st)
3330 AVIndexEntry *sample = NULL;
3331 int64_t best_dts = INT64_MAX;
3333 for (i = 0; i < s->nb_streams; i++) {
3334 AVStream *avst = s->streams[i];
3335 MOVStreamContext *msc = avst->priv_data;
3336 if (msc->pb && msc->current_sample < avst->nb_index_entries) {
3337 AVIndexEntry *current_sample = &avst->index_entries[msc->current_sample];
3338 int64_t dts = av_rescale(current_sample->timestamp, AV_TIME_BASE, msc->time_scale);
3339 av_dlog(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
3340 if (!sample || (!s->pb->seekable && current_sample->pos < sample->pos) ||
3342 ((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb &&
3343 ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
3344 (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) {
3345 sample = current_sample;
3354 static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
3356 MOVContext *mov = s->priv_data;
3357 MOVStreamContext *sc;
3358 AVIndexEntry *sample;
3359 AVStream *st = NULL;
3362 sample = mov_find_next_sample(s, &st);
3364 mov->found_mdat = 0;
3365 if (!mov->next_root_atom)
3367 avio_seek(s->pb, mov->next_root_atom, SEEK_SET);
3368 mov->next_root_atom = 0;
3369 if (mov_read_default(mov, s->pb, (MOVAtom){ AV_RL32("root"), INT64_MAX }) < 0 ||
3372 av_dlog(s, "read fragments, offset 0x%"PRIx64"\n", avio_tell(s->pb));
3376 /* must be done just before reading, to avoid infinite loop on sample */
3377 sc->current_sample++;
3379 if (st->discard != AVDISCARD_ALL) {
3380 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
3381 av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
3382 sc->ffindex, sample->pos);
3383 return AVERROR_INVALIDDATA;
3385 ret = av_get_packet(sc->pb, pkt, sample->size);
3388 if (sc->has_palette) {
3391 pal = av_packet_new_side_data(pkt, AV_PKT_DATA_PALETTE, AVPALETTE_SIZE);
3393 av_log(mov->fc, AV_LOG_ERROR, "Cannot append palette to packet\n");
3395 memcpy(pal, sc->palette, AVPALETTE_SIZE);
3396 sc->has_palette = 0;
3399 #if CONFIG_DV_DEMUXER
3400 if (mov->dv_demux && sc->dv_audio_container) {
3401 avpriv_dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size);
3404 ret = avpriv_dv_get_packet(mov->dv_demux, pkt);
3411 pkt->stream_index = sc->ffindex;
3412 pkt->dts = sample->timestamp;
3413 if (sc->ctts_data && sc->ctts_index < sc->ctts_count) {
3414 pkt->pts = pkt->dts + sc->dts_shift + sc->ctts_data[sc->ctts_index].duration;
3415 /* update ctts context */
3417 if (sc->ctts_index < sc->ctts_count &&
3418 sc->ctts_data[sc->ctts_index].count == sc->ctts_sample) {
3420 sc->ctts_sample = 0;
3423 pkt->dts = AV_NOPTS_VALUE;
3425 int64_t next_dts = (sc->current_sample < st->nb_index_entries) ?
3426 st->index_entries[sc->current_sample].timestamp : st->duration;
3427 pkt->duration = next_dts - pkt->dts;
3428 pkt->pts = pkt->dts;
3430 if (st->discard == AVDISCARD_ALL)
3432 pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? AV_PKT_FLAG_KEY : 0;
3433 pkt->pos = sample->pos;
3434 av_dlog(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n",
3435 pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
3439 static int mov_seek_stream(AVFormatContext *s, AVStream *st, int64_t timestamp, int flags)
3441 MOVStreamContext *sc = st->priv_data;
3442 int sample, time_sample;
3445 sample = av_index_search_timestamp(st, timestamp, flags);
3446 av_dlog(s, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
3447 if (sample < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
3449 if (sample < 0) /* not sure what to do */
3450 return AVERROR_INVALIDDATA;
3451 sc->current_sample = sample;
3452 av_dlog(s, "stream %d, found sample %d\n", st->index, sc->current_sample);
3453 /* adjust ctts index */
3454 if (sc->ctts_data) {
3456 for (i = 0; i < sc->ctts_count; i++) {
3457 int next = time_sample + sc->ctts_data[i].count;
3458 if (next > sc->current_sample) {
3460 sc->ctts_sample = sc->current_sample - time_sample;
3469 static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
3472 int64_t seek_timestamp, timestamp;
3476 if (stream_index >= s->nb_streams)
3477 return AVERROR_INVALIDDATA;
3478 if (sample_time < 0)
3481 st = s->streams[stream_index];
3482 sample = mov_seek_stream(s, st, sample_time, flags);
3486 /* adjust seek timestamp to found sample timestamp */
3487 seek_timestamp = st->index_entries[sample].timestamp;
3489 for (i = 0; i < s->nb_streams; i++) {
3491 if (stream_index == i)
3494 timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
3495 mov_seek_stream(s, st, timestamp, flags);
3500 #define OFFSET(x) offsetof(MOVContext, x)
3501 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
3502 static const AVOption mov_options[] = {
3503 { "export_all", "Export unrecognized metadata entries", OFFSET(export_all),
3504 AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, .flags = FLAGS },
3505 { "export_xmp", "Export full XMP metadata", OFFSET(export_xmp),
3506 AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, .flags = FLAGS },
3510 static const AVClass mov_class = {
3511 .class_name = "mov,mp4,m4a,3gp,3g2,mj2",
3512 .item_name = av_default_item_name,
3513 .option = mov_options,
3514 .version = LIBAVUTIL_VERSION_INT,
3517 AVInputFormat ff_mov_demuxer = {
3518 .name = "mov,mp4,m4a,3gp,3g2,mj2",
3519 .long_name = NULL_IF_CONFIG_SMALL("QuickTime / MOV"),
3520 .priv_class = &mov_class,
3521 .priv_data_size = sizeof(MOVContext),
3522 .extensions = "mov,mp4,m4a,3gp,3g2,mj2",
3523 .read_probe = mov_probe,
3524 .read_header = mov_read_header,
3525 .read_packet = mov_read_packet,
3526 .read_close = mov_read_close,
3527 .read_seek = mov_read_seek,