3 * Copyright (c) 2001 Fabrice Bellard
4 * Copyright (c) 2009 Baptiste Coudurier <baptiste dot coudurier at gmail dot com>
6 * first version by Francois Revol <revol@free.fr>
7 * seek function by Gael Chardon <gael.dev@4now.net>
9 * This file is part of FFmpeg.
11 * FFmpeg is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU Lesser General Public
13 * License as published by the Free Software Foundation; either
14 * version 2.1 of the License, or (at your option) any later version.
16 * FFmpeg is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * Lesser General Public License for more details.
21 * You should have received a copy of the GNU Lesser General Public
22 * License along with FFmpeg; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
28 //#define MOV_EXPORT_ALL_METADATA
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/avstring.h"
36 #include "libavutil/dict.h"
37 #include "libavutil/opt.h"
38 #include "libavutil/timecode.h"
39 #include "libavcodec/ac3tab.h"
42 #include "avio_internal.h"
45 #include "libavcodec/get_bits.h"
53 #include "qtpalette.h"
59 /* those functions parse an atom */
60 /* links atom IDs to parse functions */
61 typedef struct MOVParseTableEntry {
63 int (*parse)(MOVContext *ctx, AVIOContext *pb, MOVAtom atom);
66 static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom);
68 static int mov_metadata_track_or_disc_number(MOVContext *c, AVIOContext *pb,
69 unsigned len, const char *key)
73 short current, total = 0;
74 avio_rb16(pb); // unknown
75 current = avio_rb16(pb);
77 total = avio_rb16(pb);
79 snprintf(buf, sizeof(buf), "%d", current);
81 snprintf(buf, sizeof(buf), "%d/%d", current, total);
82 av_dict_set(&c->fc->metadata, key, buf, 0);
87 static int mov_metadata_int8_bypass_padding(MOVContext *c, AVIOContext *pb,
88 unsigned len, const char *key)
92 /* bypass padding bytes */
97 snprintf(buf, sizeof(buf), "%d", avio_r8(pb));
98 av_dict_set(&c->fc->metadata, key, buf, 0);
103 static int mov_metadata_int8_no_padding(MOVContext *c, AVIOContext *pb,
104 unsigned len, const char *key)
108 snprintf(buf, sizeof(buf), "%d", avio_r8(pb));
109 av_dict_set(&c->fc->metadata, key, buf, 0);
114 static int mov_metadata_gnre(MOVContext *c, AVIOContext *pb,
115 unsigned len, const char *key)
120 avio_r8(pb); // unknown
123 if (genre < 1 || genre > ID3v1_GENRE_MAX)
125 snprintf(buf, sizeof(buf), "%s", ff_id3v1_genre_str[genre-1]);
126 av_dict_set(&c->fc->metadata, key, buf, 0);
131 static int mov_read_custom_metadata(MOVContext *c, AVIOContext *pb, MOVAtom atom)
133 char key[1024]={0}, data[1024]={0};
136 MOVStreamContext *sc;
138 if (c->fc->nb_streams < 1)
140 st = c->fc->streams[c->fc->nb_streams-1];
143 if (atom.size <= 8) return 0;
145 for (i = 0; i < 3; i++) { // Parse up to three sub-atoms looking for name and data.
146 int data_size = avio_rb32(pb);
147 int tag = avio_rl32(pb);
148 int str_size = 0, skip_size = 0;
152 case MKTAG('n','a','m','e'):
153 avio_rb32(pb); // version/flags
154 str_size = skip_size = data_size - 12;
158 case MKTAG('d','a','t','a'):
159 avio_rb32(pb); // version/flags
160 avio_rb32(pb); // reserved (zero)
161 str_size = skip_size = data_size - 16;
166 skip_size = data_size - 8;
172 str_size = FFMIN3(sizeof(data)-1, str_size, atom.size);
173 avio_read(pb, target, str_size);
174 target[str_size] = 0;
176 atom.size -= skip_size;
178 // If we didn't read the full data chunk for the sub-atom, skip to the end of it.
179 if (skip_size > str_size) avio_skip(pb, skip_size - str_size);
183 if (strcmp(key, "iTunSMPB") == 0) {
184 int priming, remainder, samples;
185 if(sscanf(data, "%*X %X %X %X", &priming, &remainder, &samples) == 3){
186 if(priming>0 && priming<16384)
187 sc->start_pad = priming;
191 if (strcmp(key, "cdec") == 0) {
192 // av_dict_set(&st->metadata, key, data, 0);
199 static const uint32_t mac_to_unicode[128] = {
200 0x00C4,0x00C5,0x00C7,0x00C9,0x00D1,0x00D6,0x00DC,0x00E1,
201 0x00E0,0x00E2,0x00E4,0x00E3,0x00E5,0x00E7,0x00E9,0x00E8,
202 0x00EA,0x00EB,0x00ED,0x00EC,0x00EE,0x00EF,0x00F1,0x00F3,
203 0x00F2,0x00F4,0x00F6,0x00F5,0x00FA,0x00F9,0x00FB,0x00FC,
204 0x2020,0x00B0,0x00A2,0x00A3,0x00A7,0x2022,0x00B6,0x00DF,
205 0x00AE,0x00A9,0x2122,0x00B4,0x00A8,0x2260,0x00C6,0x00D8,
206 0x221E,0x00B1,0x2264,0x2265,0x00A5,0x00B5,0x2202,0x2211,
207 0x220F,0x03C0,0x222B,0x00AA,0x00BA,0x03A9,0x00E6,0x00F8,
208 0x00BF,0x00A1,0x00AC,0x221A,0x0192,0x2248,0x2206,0x00AB,
209 0x00BB,0x2026,0x00A0,0x00C0,0x00C3,0x00D5,0x0152,0x0153,
210 0x2013,0x2014,0x201C,0x201D,0x2018,0x2019,0x00F7,0x25CA,
211 0x00FF,0x0178,0x2044,0x20AC,0x2039,0x203A,0xFB01,0xFB02,
212 0x2021,0x00B7,0x201A,0x201E,0x2030,0x00C2,0x00CA,0x00C1,
213 0x00CB,0x00C8,0x00CD,0x00CE,0x00CF,0x00CC,0x00D3,0x00D4,
214 0xF8FF,0x00D2,0x00DA,0x00DB,0x00D9,0x0131,0x02C6,0x02DC,
215 0x00AF,0x02D8,0x02D9,0x02DA,0x00B8,0x02DD,0x02DB,0x02C7,
218 static int mov_read_mac_string(MOVContext *c, AVIOContext *pb, int len,
219 char *dst, int dstlen)
222 char *end = dst+dstlen-1;
225 for (i = 0; i < len; i++) {
226 uint8_t t, c = avio_r8(pb);
227 if (c < 0x80 && p < end)
230 PUT_UTF8(mac_to_unicode[c-0x80], t, if (p < end) *p++ = t;);
236 static int mov_read_covr(MOVContext *c, AVIOContext *pb, int type, int len)
240 MOVStreamContext *sc;
245 case 0xd: id = AV_CODEC_ID_MJPEG; break;
246 case 0xe: id = AV_CODEC_ID_PNG; break;
247 case 0x1b: id = AV_CODEC_ID_BMP; break;
249 av_log(c->fc, AV_LOG_WARNING, "Unknown cover type: 0x%x.\n", type);
254 st = avformat_new_stream(c->fc, NULL);
256 return AVERROR(ENOMEM);
257 sc = av_mallocz(sizeof(*sc));
259 return AVERROR(ENOMEM);
262 ret = av_get_packet(pb, &pkt, len);
266 st->disposition |= AV_DISPOSITION_ATTACHED_PIC;
268 st->attached_pic = pkt;
269 st->attached_pic.stream_index = st->index;
270 st->attached_pic.flags |= AV_PKT_FLAG_KEY;
272 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
273 st->codec->codec_id = id;
278 static int mov_metadata_raw(MOVContext *c, AVIOContext *pb,
279 unsigned len, const char *key)
281 char *value = av_malloc(len + 1);
283 return AVERROR(ENOMEM);
284 avio_read(pb, value, len);
286 return av_dict_set(&c->fc->metadata, key, value, AV_DICT_DONT_STRDUP_VAL);
289 static int mov_read_udta_string(MOVContext *c, AVIOContext *pb, MOVAtom atom)
291 #ifdef MOV_EXPORT_ALL_METADATA
294 char str[1024], key2[16], language[4] = {0};
295 const char *key = NULL;
296 uint16_t langcode = 0;
297 uint32_t data_type = 0, str_size;
298 int (*parse)(MOVContext*, AVIOContext*, unsigned, const char*) = NULL;
300 if (c->itunes_metadata && atom.type == MKTAG('-','-','-','-'))
301 return mov_read_custom_metadata(c, pb, atom);
304 case MKTAG(0xa9,'n','a','m'): key = "title"; break;
305 case MKTAG(0xa9,'a','u','t'):
306 case MKTAG(0xa9,'A','R','T'): key = "artist"; break;
307 case MKTAG( 'a','A','R','T'): key = "album_artist"; break;
308 case MKTAG(0xa9,'w','r','t'): key = "composer"; break;
309 case MKTAG( 'c','p','r','t'):
310 case MKTAG(0xa9,'c','p','y'): key = "copyright"; break;
311 case MKTAG(0xa9,'g','r','p'): key = "grouping"; break;
312 case MKTAG(0xa9,'l','y','r'): key = "lyrics"; break;
313 case MKTAG(0xa9,'c','m','t'):
314 case MKTAG(0xa9,'i','n','f'): key = "comment"; break;
315 case MKTAG(0xa9,'a','l','b'): key = "album"; break;
316 case MKTAG(0xa9,'d','a','y'): key = "date"; break;
317 case MKTAG(0xa9,'g','e','n'): key = "genre"; break;
318 case MKTAG( 'g','n','r','e'): key = "genre";
319 parse = mov_metadata_gnre; break;
320 case MKTAG(0xa9,'t','o','o'):
321 case MKTAG(0xa9,'s','w','r'): key = "encoder"; break;
322 case MKTAG(0xa9,'e','n','c'): key = "encoder"; break;
323 case MKTAG(0xa9,'m','a','k'): key = "make"; break;
324 case MKTAG(0xa9,'m','o','d'): key = "model"; break;
325 case MKTAG(0xa9,'x','y','z'): key = "location"; break;
326 case MKTAG( 'd','e','s','c'): key = "description";break;
327 case MKTAG( 'l','d','e','s'): key = "synopsis"; break;
328 case MKTAG( 't','v','s','h'): key = "show"; break;
329 case MKTAG( 't','v','e','n'): key = "episode_id";break;
330 case MKTAG( 't','v','n','n'): key = "network"; break;
331 case MKTAG( 't','r','k','n'): key = "track";
332 parse = mov_metadata_track_or_disc_number; break;
333 case MKTAG( 'd','i','s','k'): key = "disc";
334 parse = mov_metadata_track_or_disc_number; break;
335 case MKTAG( 't','v','e','s'): key = "episode_sort";
336 parse = mov_metadata_int8_bypass_padding; break;
337 case MKTAG( 't','v','s','n'): key = "season_number";
338 parse = mov_metadata_int8_bypass_padding; break;
339 case MKTAG( 's','t','i','k'): key = "media_type";
340 parse = mov_metadata_int8_no_padding; break;
341 case MKTAG( 'h','d','v','d'): key = "hd_video";
342 parse = mov_metadata_int8_no_padding; break;
343 case MKTAG( 'p','g','a','p'): key = "gapless_playback";
344 parse = mov_metadata_int8_no_padding; break;
345 case MKTAG( '@','P','R','M'):
346 return mov_metadata_raw(c, pb, atom.size, "premiere_version");
347 case MKTAG( '@','P','R','Q'):
348 return mov_metadata_raw(c, pb, atom.size, "quicktime_version");
351 if (c->itunes_metadata && atom.size > 8) {
352 int data_size = avio_rb32(pb);
353 int tag = avio_rl32(pb);
354 if (tag == MKTAG('d','a','t','a')) {
355 data_type = avio_rb32(pb); // type
356 avio_rb32(pb); // unknown
357 str_size = data_size - 16;
360 if (atom.type == MKTAG('c', 'o', 'v', 'r')) {
361 int ret = mov_read_covr(c, pb, data_type, str_size);
363 av_log(c->fc, AV_LOG_ERROR, "Error parsing cover art.\n");
368 } else if (atom.size > 4 && key && !c->itunes_metadata) {
369 str_size = avio_rb16(pb); // string length
370 langcode = avio_rb16(pb);
371 ff_mov_lang_to_iso639(langcode, language);
374 str_size = atom.size;
376 #ifdef MOV_EXPORT_ALL_METADATA
378 snprintf(tmp_key, 5, "%.4s", (char*)&atom.type);
386 return AVERROR_INVALIDDATA;
388 str_size = FFMIN3(sizeof(str)-1, str_size, atom.size);
391 parse(c, pb, str_size, key);
393 if (data_type == 3 || (data_type == 0 && (langcode < 0x400 || langcode == 0x7fff))) { // MAC Encoded
394 mov_read_mac_string(c, pb, str_size, str, sizeof(str));
396 avio_read(pb, str, str_size);
399 av_dict_set(&c->fc->metadata, key, str, 0);
400 if (*language && strcmp(language, "und")) {
401 snprintf(key2, sizeof(key2), "%s-%s", key, language);
402 av_dict_set(&c->fc->metadata, key2, str, 0);
405 av_dlog(c->fc, "lang \"%3s\" ", language);
406 av_dlog(c->fc, "tag \"%s\" value \"%s\" atom \"%.4s\" %d %"PRId64"\n",
407 key, str, (char*)&atom.type, str_size, atom.size);
412 static int mov_read_chpl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
415 int i, nb_chapters, str_len, version;
418 if ((atom.size -= 5) < 0)
421 version = avio_r8(pb);
424 avio_rb32(pb); // ???
425 nb_chapters = avio_r8(pb);
427 for (i = 0; i < nb_chapters; i++) {
431 start = avio_rb64(pb);
432 str_len = avio_r8(pb);
434 if ((atom.size -= 9+str_len) < 0)
437 avio_read(pb, str, str_len);
439 avpriv_new_chapter(c->fc, i, (AVRational){1,10000000}, start, AV_NOPTS_VALUE, str);
444 #define MIN_DATA_ENTRY_BOX_SIZE 12
445 static int mov_read_dref(MOVContext *c, AVIOContext *pb, MOVAtom atom)
448 MOVStreamContext *sc;
451 if (c->fc->nb_streams < 1)
453 st = c->fc->streams[c->fc->nb_streams-1];
456 avio_rb32(pb); // version + flags
457 entries = avio_rb32(pb);
458 if (entries > (atom.size - 1) / MIN_DATA_ENTRY_BOX_SIZE + 1 ||
459 entries >= UINT_MAX / sizeof(*sc->drefs))
460 return AVERROR_INVALIDDATA;
463 sc->drefs = av_mallocz(entries * sizeof(*sc->drefs));
465 return AVERROR(ENOMEM);
466 sc->drefs_count = entries;
468 for (i = 0; i < sc->drefs_count; i++) {
469 MOVDref *dref = &sc->drefs[i];
470 uint32_t size = avio_rb32(pb);
471 int64_t next = avio_tell(pb) + size - 4;
474 return AVERROR_INVALIDDATA;
476 dref->type = avio_rl32(pb);
477 avio_rb32(pb); // version + flags
478 av_dlog(c->fc, "type %.4s size %d\n", (char*)&dref->type, size);
480 if (dref->type == MKTAG('a','l','i','s') && size > 150) {
481 /* macintosh alias record */
482 uint16_t volume_len, len;
487 volume_len = avio_r8(pb);
488 volume_len = FFMIN(volume_len, 27);
489 avio_read(pb, dref->volume, 27);
490 dref->volume[volume_len] = 0;
491 av_log(c->fc, AV_LOG_DEBUG, "volume %s, len %d\n", dref->volume, volume_len);
496 len = FFMIN(len, 63);
497 avio_read(pb, dref->filename, 63);
498 dref->filename[len] = 0;
499 av_log(c->fc, AV_LOG_DEBUG, "filename %s, len %d\n", dref->filename, len);
503 /* read next level up_from_alias/down_to_target */
504 dref->nlvl_from = avio_rb16(pb);
505 dref->nlvl_to = avio_rb16(pb);
506 av_log(c->fc, AV_LOG_DEBUG, "nlvl from %d, nlvl to %d\n",
507 dref->nlvl_from, dref->nlvl_to);
511 for (type = 0; type != -1 && avio_tell(pb) < next; ) {
514 type = avio_rb16(pb);
516 av_log(c->fc, AV_LOG_DEBUG, "type %d, len %d\n", type, len);
519 if (type == 2) { // absolute path
521 dref->path = av_mallocz(len+1);
523 return AVERROR(ENOMEM);
524 avio_read(pb, dref->path, len);
525 if (len > volume_len && !strncmp(dref->path, dref->volume, volume_len)) {
527 memmove(dref->path, dref->path+volume_len, len);
530 for (j = 0; j < len; j++)
531 if (dref->path[j] == ':')
533 av_log(c->fc, AV_LOG_DEBUG, "path %s\n", dref->path);
534 } else if (type == 0) { // directory name
536 dref->dir = av_malloc(len+1);
538 return AVERROR(ENOMEM);
539 avio_read(pb, dref->dir, len);
541 for (j = 0; j < len; j++)
542 if (dref->dir[j] == ':')
544 av_log(c->fc, AV_LOG_DEBUG, "dir %s\n", dref->dir);
549 avio_seek(pb, next, SEEK_SET);
554 static int mov_read_hdlr(MOVContext *c, AVIOContext *pb, MOVAtom atom)
558 uint32_t av_unused ctype;
562 if (c->fc->nb_streams < 1) // meta before first trak
565 st = c->fc->streams[c->fc->nb_streams-1];
567 avio_r8(pb); /* version */
568 avio_rb24(pb); /* flags */
571 ctype = avio_rl32(pb);
572 type = avio_rl32(pb); /* component subtype */
574 av_dlog(c->fc, "ctype= %.4s (0x%08x)\n", (char*)&ctype, ctype);
575 av_dlog(c->fc, "stype= %.4s\n", (char*)&type);
577 if (type == MKTAG('v','i','d','e'))
578 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
579 else if (type == MKTAG('s','o','u','n'))
580 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
581 else if (type == MKTAG('m','1','a',' '))
582 st->codec->codec_id = AV_CODEC_ID_MP2;
583 else if ((type == MKTAG('s','u','b','p')) || (type == MKTAG('c','l','c','p')))
584 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
586 avio_rb32(pb); /* component manufacture */
587 avio_rb32(pb); /* component flags */
588 avio_rb32(pb); /* component flags mask */
590 title_size = atom.size - 24;
591 if (title_size > 0) {
592 title_str = av_malloc(title_size + 1); /* Add null terminator */
594 return AVERROR(ENOMEM);
595 avio_read(pb, title_str, title_size);
596 title_str[title_size] = 0;
598 av_dict_set(&st->metadata, "handler_name", title_str +
599 (!c->isom && title_str[0] == title_size - 1), 0);
600 av_freep(&title_str);
606 int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb, MOVAtom atom)
611 if (fc->nb_streams < 1)
613 st = fc->streams[fc->nb_streams-1];
615 avio_rb32(pb); /* version + flags */
616 ff_mp4_read_descr(fc, pb, &tag);
617 if (tag == MP4ESDescrTag) {
618 ff_mp4_parse_es_descr(pb, NULL);
620 avio_rb16(pb); /* ID */
622 ff_mp4_read_descr(fc, pb, &tag);
623 if (tag == MP4DecConfigDescrTag)
624 ff_mp4_read_dec_config_descr(fc, st, pb);
628 static int mov_read_esds(MOVContext *c, AVIOContext *pb, MOVAtom atom)
630 return ff_mov_read_esds(c->fc, pb, atom);
633 static int mov_read_dac3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
636 int ac3info, acmod, lfeon, bsmod;
638 if (c->fc->nb_streams < 1)
640 st = c->fc->streams[c->fc->nb_streams-1];
642 ac3info = avio_rb24(pb);
643 bsmod = (ac3info >> 14) & 0x7;
644 acmod = (ac3info >> 11) & 0x7;
645 lfeon = (ac3info >> 10) & 0x1;
646 st->codec->channels = ((int[]){2,1,2,3,3,4,4,5})[acmod] + lfeon;
647 st->codec->channel_layout = avpriv_ac3_channel_layout_tab[acmod];
649 st->codec->channel_layout |= AV_CH_LOW_FREQUENCY;
650 st->codec->audio_service_type = bsmod;
651 if (st->codec->channels > 1 && bsmod == 0x7)
652 st->codec->audio_service_type = AV_AUDIO_SERVICE_TYPE_KARAOKE;
657 static int mov_read_dec3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
660 int eac3info, acmod, lfeon, bsmod;
662 if (c->fc->nb_streams < 1)
664 st = c->fc->streams[c->fc->nb_streams-1];
666 /* No need to parse fields for additional independent substreams and its
667 * associated dependent substreams since libavcodec's E-AC-3 decoder
668 * does not support them yet. */
669 avio_rb16(pb); /* data_rate and num_ind_sub */
670 eac3info = avio_rb24(pb);
671 bsmod = (eac3info >> 12) & 0x1f;
672 acmod = (eac3info >> 9) & 0x7;
673 lfeon = (eac3info >> 8) & 0x1;
674 st->codec->channel_layout = avpriv_ac3_channel_layout_tab[acmod];
676 st->codec->channel_layout |= AV_CH_LOW_FREQUENCY;
677 st->codec->channels = av_get_channel_layout_nb_channels(st->codec->channel_layout);
678 st->codec->audio_service_type = bsmod;
679 if (st->codec->channels > 1 && bsmod == 0x7)
680 st->codec->audio_service_type = AV_AUDIO_SERVICE_TYPE_KARAOKE;
685 static int mov_read_chan(MOVContext *c, AVIOContext *pb, MOVAtom atom)
689 if (c->fc->nb_streams < 1)
691 st = c->fc->streams[c->fc->nb_streams-1];
696 /* skip version and flags */
699 ff_mov_read_chan(c->fc, pb, st, atom.size - 4);
704 static int mov_read_wfex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
708 if (c->fc->nb_streams < 1)
710 st = c->fc->streams[c->fc->nb_streams-1];
712 if (ff_get_wav_header(pb, st->codec, atom.size) < 0) {
713 av_log(c->fc, AV_LOG_WARNING, "get_wav_header failed\n");
719 static int mov_read_pasp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
721 const int num = avio_rb32(pb);
722 const int den = avio_rb32(pb);
725 if (c->fc->nb_streams < 1)
727 st = c->fc->streams[c->fc->nb_streams-1];
729 if ((st->sample_aspect_ratio.den != 1 || st->sample_aspect_ratio.num) && // default
730 (den != st->sample_aspect_ratio.den || num != st->sample_aspect_ratio.num)) {
731 av_log(c->fc, AV_LOG_WARNING,
732 "sample aspect ratio already set to %d:%d, ignoring 'pasp' atom (%d:%d)\n",
733 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
735 } else if (den != 0) {
736 st->sample_aspect_ratio.num = num;
737 st->sample_aspect_ratio.den = den;
742 /* this atom contains actual media data */
743 static int mov_read_mdat(MOVContext *c, AVIOContext *pb, MOVAtom atom)
745 if (atom.size == 0) /* wrong one (MP4) */
748 return 0; /* now go for moov */
751 /* read major brand, minor version and compatible brands and store them as metadata */
752 static int mov_read_ftyp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
756 char minor_ver_str[11]; /* 32 bit integer -> 10 digits + null */
757 char* comp_brands_str;
758 uint8_t type[5] = {0};
760 avio_read(pb, type, 4);
761 if (strcmp(type, "qt "))
763 av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
764 av_dict_set(&c->fc->metadata, "major_brand", type, 0);
765 minor_ver = avio_rb32(pb); /* minor version */
766 snprintf(minor_ver_str, sizeof(minor_ver_str), "%d", minor_ver);
767 av_dict_set(&c->fc->metadata, "minor_version", minor_ver_str, 0);
769 comp_brand_size = atom.size - 8;
770 if (comp_brand_size < 0)
771 return AVERROR_INVALIDDATA;
772 comp_brands_str = av_malloc(comp_brand_size + 1); /* Add null terminator */
773 if (!comp_brands_str)
774 return AVERROR(ENOMEM);
775 avio_read(pb, comp_brands_str, comp_brand_size);
776 comp_brands_str[comp_brand_size] = 0;
777 av_dict_set(&c->fc->metadata, "compatible_brands", comp_brands_str, 0);
778 av_freep(&comp_brands_str);
783 /* this atom should contain all header atoms */
784 static int mov_read_moov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
789 av_log(c->fc, AV_LOG_WARNING, "Found duplicated MOOV Atom. Skipped it\n");
790 avio_skip(pb, atom.size);
794 if ((ret = mov_read_default(c, pb, atom)) < 0)
796 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
797 /* so we don't parse the whole file if over a network */
799 return 0; /* now go for mdat */
802 static int mov_read_moof(MOVContext *c, AVIOContext *pb, MOVAtom atom)
804 c->fragment.moof_offset = avio_tell(pb) - 8;
805 av_dlog(c->fc, "moof offset %"PRIx64"\n", c->fragment.moof_offset);
806 return mov_read_default(c, pb, atom);
809 static void mov_metadata_creation_time(AVDictionary **metadata, int64_t time)
815 if(time >= 2082844800)
816 time -= 2082844800; /* seconds between 1904-01-01 and Epoch */
818 ptm = gmtime(&timet);
820 strftime(buffer, sizeof(buffer), "%Y-%m-%d %H:%M:%S", ptm);
821 av_dict_set(metadata, "creation_time", buffer, 0);
825 static int mov_read_mdhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
828 MOVStreamContext *sc;
830 char language[4] = {0};
832 int64_t creation_time;
834 if (c->fc->nb_streams < 1)
836 st = c->fc->streams[c->fc->nb_streams-1];
839 if (sc->time_scale) {
840 av_log(c->fc, AV_LOG_ERROR, "Multiple mdhd?\n");
841 return AVERROR_INVALIDDATA;
844 version = avio_r8(pb);
846 avpriv_request_sample(c->fc, "Version %d", version);
847 return AVERROR_PATCHWELCOME;
849 avio_rb24(pb); /* flags */
851 creation_time = avio_rb64(pb);
854 creation_time = avio_rb32(pb);
855 avio_rb32(pb); /* modification time */
857 mov_metadata_creation_time(&st->metadata, creation_time);
859 sc->time_scale = avio_rb32(pb);
860 st->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
862 lang = avio_rb16(pb); /* language */
863 if (ff_mov_lang_to_iso639(lang, language))
864 av_dict_set(&st->metadata, "language", language, 0);
865 avio_rb16(pb); /* quality */
870 static int mov_read_mvhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
872 int64_t creation_time;
873 int version = avio_r8(pb); /* version */
874 avio_rb24(pb); /* flags */
877 creation_time = avio_rb64(pb);
880 creation_time = avio_rb32(pb);
881 avio_rb32(pb); /* modification time */
883 mov_metadata_creation_time(&c->fc->metadata, creation_time);
884 c->time_scale = avio_rb32(pb); /* time scale */
886 av_dlog(c->fc, "time scale = %i\n", c->time_scale);
888 c->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
889 // set the AVCodecContext duration because the duration of individual tracks
891 if (c->time_scale > 0 && !c->trex_data)
892 c->fc->duration = av_rescale(c->duration, AV_TIME_BASE, c->time_scale);
893 avio_rb32(pb); /* preferred scale */
895 avio_rb16(pb); /* preferred volume */
897 avio_skip(pb, 10); /* reserved */
899 avio_skip(pb, 36); /* display matrix */
901 avio_rb32(pb); /* preview time */
902 avio_rb32(pb); /* preview duration */
903 avio_rb32(pb); /* poster time */
904 avio_rb32(pb); /* selection time */
905 avio_rb32(pb); /* selection duration */
906 avio_rb32(pb); /* current time */
907 avio_rb32(pb); /* next track ID */
911 static int mov_read_enda(MOVContext *c, AVIOContext *pb, MOVAtom atom)
916 if (c->fc->nb_streams < 1)
918 st = c->fc->streams[c->fc->nb_streams-1];
920 little_endian = avio_rb16(pb) & 0xFF;
921 av_dlog(c->fc, "enda %d\n", little_endian);
922 if (little_endian == 1) {
923 switch (st->codec->codec_id) {
924 case AV_CODEC_ID_PCM_S24BE:
925 st->codec->codec_id = AV_CODEC_ID_PCM_S24LE;
927 case AV_CODEC_ID_PCM_S32BE:
928 st->codec->codec_id = AV_CODEC_ID_PCM_S32LE;
930 case AV_CODEC_ID_PCM_F32BE:
931 st->codec->codec_id = AV_CODEC_ID_PCM_F32LE;
933 case AV_CODEC_ID_PCM_F64BE:
934 st->codec->codec_id = AV_CODEC_ID_PCM_F64LE;
943 static int mov_read_fiel(MOVContext *c, AVIOContext *pb, MOVAtom atom)
946 unsigned mov_field_order;
947 enum AVFieldOrder decoded_field_order = AV_FIELD_UNKNOWN;
949 if (c->fc->nb_streams < 1) // will happen with jp2 files
951 st = c->fc->streams[c->fc->nb_streams-1];
953 return AVERROR_INVALIDDATA;
954 mov_field_order = avio_rb16(pb);
955 if ((mov_field_order & 0xFF00) == 0x0100)
956 decoded_field_order = AV_FIELD_PROGRESSIVE;
957 else if ((mov_field_order & 0xFF00) == 0x0200) {
958 switch (mov_field_order & 0xFF) {
959 case 0x01: decoded_field_order = AV_FIELD_TT;
961 case 0x06: decoded_field_order = AV_FIELD_BB;
963 case 0x09: decoded_field_order = AV_FIELD_TB;
965 case 0x0E: decoded_field_order = AV_FIELD_BT;
969 if (decoded_field_order == AV_FIELD_UNKNOWN && mov_field_order) {
970 av_log(NULL, AV_LOG_ERROR, "Unknown MOV field order 0x%04x\n", mov_field_order);
972 st->codec->field_order = decoded_field_order;
977 /* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
978 static int mov_read_extradata(MOVContext *c, AVIOContext *pb, MOVAtom atom,
979 enum AVCodecID codec_id)
986 if (c->fc->nb_streams < 1) // will happen with jp2 files
988 st= c->fc->streams[c->fc->nb_streams-1];
990 if (st->codec->codec_id != codec_id)
991 return 0; /* unexpected codec_id - don't mess with extradata */
993 size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
994 if (size > INT_MAX || (uint64_t)atom.size > INT_MAX)
995 return AVERROR_INVALIDDATA;
996 if ((err = av_reallocp(&st->codec->extradata, size)) < 0) {
997 st->codec->extradata_size = 0;
1000 buf = st->codec->extradata + st->codec->extradata_size;
1001 st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE;
1002 AV_WB32( buf , atom.size + 8);
1003 AV_WL32( buf + 4, atom.type);
1004 avio_read(pb, buf + 8, atom.size);
1008 /* wrapper functions for reading ALAC/AVS/MJPEG/MJPEG2000 extradata atoms only for those codecs */
1009 static int mov_read_alac(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1011 return mov_read_extradata(c, pb, atom, AV_CODEC_ID_ALAC);
1014 static int mov_read_avss(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1016 return mov_read_extradata(c, pb, atom, AV_CODEC_ID_AVS);
1019 static int mov_read_jp2h(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1021 return mov_read_extradata(c, pb, atom, AV_CODEC_ID_JPEG2000);
1024 static int mov_read_avid(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1026 return mov_read_extradata(c, pb, atom, AV_CODEC_ID_AVUI);
1029 static int mov_read_targa_y216(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1031 int ret = mov_read_extradata(c, pb, atom, AV_CODEC_ID_TARGA_Y216);
1033 if (!ret && c->fc->nb_streams >= 1) {
1034 AVCodecContext *avctx = c->fc->streams[c->fc->nb_streams-1]->codec;
1035 if (avctx->extradata_size >= 40) {
1036 avctx->height = AV_RB16(&avctx->extradata[36]);
1037 avctx->width = AV_RB16(&avctx->extradata[38]);
1043 static int mov_read_ares(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1045 AVCodecContext *codec = c->fc->streams[c->fc->nb_streams-1]->codec;
1046 if (codec->codec_tag == MKTAG('A', 'V', 'i', 'n') &&
1047 codec->codec_id == AV_CODEC_ID_H264 &&
1050 /* For AVID AVCI50, force width of 1440 to be able to select the correct SPS and PPS */
1051 if (avio_rb16(pb) == 0xd4d)
1052 codec->width = 1440;
1056 return mov_read_avid(c, pb, atom);
1059 static int mov_read_svq3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1061 return mov_read_extradata(c, pb, atom, AV_CODEC_ID_SVQ3);
1064 static int mov_read_wave(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1068 if (c->fc->nb_streams < 1)
1070 st = c->fc->streams[c->fc->nb_streams-1];
1072 if ((uint64_t)atom.size > (1<<30))
1073 return AVERROR_INVALIDDATA;
1075 if (st->codec->codec_id == AV_CODEC_ID_QDM2 ||
1076 st->codec->codec_id == AV_CODEC_ID_QDMC ||
1077 st->codec->codec_id == AV_CODEC_ID_SPEEX) {
1078 // pass all frma atom to codec, needed at least for QDMC and QDM2
1079 av_free(st->codec->extradata);
1080 if (ff_alloc_extradata(st->codec, atom.size))
1081 return AVERROR(ENOMEM);
1082 avio_read(pb, st->codec->extradata, atom.size);
1083 } else if (atom.size > 8) { /* to read frma, esds atoms */
1085 if ((ret = mov_read_default(c, pb, atom)) < 0)
1088 avio_skip(pb, atom.size);
1093 * This function reads atom content and puts data in extradata without tag
1094 * nor size unlike mov_read_extradata.
1096 static int mov_read_glbl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1100 if (c->fc->nb_streams < 1)
1102 st = c->fc->streams[c->fc->nb_streams-1];
1104 if ((uint64_t)atom.size > (1<<30))
1105 return AVERROR_INVALIDDATA;
1107 if (atom.size >= 10) {
1108 // Broken files created by legacy versions of libavformat will
1109 // wrap a whole fiel atom inside of a glbl atom.
1110 unsigned size = avio_rb32(pb);
1111 unsigned type = avio_rl32(pb);
1112 avio_seek(pb, -8, SEEK_CUR);
1113 if (type == MKTAG('f','i','e','l') && size == atom.size)
1114 return mov_read_default(c, pb, atom);
1116 av_free(st->codec->extradata);
1117 if (ff_alloc_extradata(st->codec, atom.size))
1118 return AVERROR(ENOMEM);
1119 avio_read(pb, st->codec->extradata, atom.size);
1123 static int mov_read_dvc1(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1126 uint8_t profile_level;
1128 if (c->fc->nb_streams < 1)
1130 st = c->fc->streams[c->fc->nb_streams-1];
1132 if (atom.size >= (1<<28) || atom.size < 7)
1133 return AVERROR_INVALIDDATA;
1135 profile_level = avio_r8(pb);
1136 if ((profile_level & 0xf0) != 0xc0)
1139 av_free(st->codec->extradata);
1140 if (ff_alloc_extradata(st->codec, atom.size - 7))
1141 return AVERROR(ENOMEM);
1142 avio_seek(pb, 6, SEEK_CUR);
1143 avio_read(pb, st->codec->extradata, st->codec->extradata_size);
1148 * An strf atom is a BITMAPINFOHEADER struct. This struct is 40 bytes itself,
1149 * but can have extradata appended at the end after the 40 bytes belonging
1152 static int mov_read_strf(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1156 if (c->fc->nb_streams < 1)
1158 if (atom.size <= 40)
1160 st = c->fc->streams[c->fc->nb_streams-1];
1162 if ((uint64_t)atom.size > (1<<30))
1163 return AVERROR_INVALIDDATA;
1165 av_free(st->codec->extradata);
1166 if (ff_alloc_extradata(st->codec, atom.size - 40))
1167 return AVERROR(ENOMEM);
1169 avio_read(pb, st->codec->extradata, atom.size - 40);
1173 static int mov_read_stco(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1176 MOVStreamContext *sc;
1177 unsigned int i, entries;
1179 if (c->fc->nb_streams < 1)
1181 st = c->fc->streams[c->fc->nb_streams-1];
1184 avio_r8(pb); /* version */
1185 avio_rb24(pb); /* flags */
1187 entries = avio_rb32(pb);
1191 if (entries >= UINT_MAX/sizeof(int64_t))
1192 return AVERROR_INVALIDDATA;
1194 sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
1195 if (!sc->chunk_offsets)
1196 return AVERROR(ENOMEM);
1197 sc->chunk_count = entries;
1199 if (atom.type == MKTAG('s','t','c','o'))
1200 for (i = 0; i < entries && !pb->eof_reached; i++)
1201 sc->chunk_offsets[i] = avio_rb32(pb);
1202 else if (atom.type == MKTAG('c','o','6','4'))
1203 for (i = 0; i < entries && !pb->eof_reached; i++)
1204 sc->chunk_offsets[i] = avio_rb64(pb);
1206 return AVERROR_INVALIDDATA;
1208 sc->chunk_count = i;
1210 if (pb->eof_reached)
1217 * Compute codec id for 'lpcm' tag.
1218 * See CoreAudioTypes and AudioStreamBasicDescription at Apple.
1220 enum AVCodecID ff_mov_get_lpcm_codec_id(int bps, int flags)
1227 return ff_get_pcm_codec_id(bps, flags & 1, flags & 2, flags & 4 ? -1 : 0);
1230 static int mov_codec_id(AVStream *st, uint32_t format)
1232 int id = ff_codec_get_id(ff_codec_movaudio_tags, format);
1235 ((format & 0xFFFF) == 'm' + ('s' << 8) ||
1236 (format & 0xFFFF) == 'T' + ('S' << 8)))
1237 id = ff_codec_get_id(ff_codec_wav_tags, av_bswap32(format) & 0xFFFF);
1239 if (st->codec->codec_type != AVMEDIA_TYPE_VIDEO && id > 0) {
1240 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
1241 } else if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO &&
1242 /* skip old asf mpeg4 tag */
1243 format && format != MKTAG('m','p','4','s')) {
1244 id = ff_codec_get_id(ff_codec_movvideo_tags, format);
1246 id = ff_codec_get_id(ff_codec_bmp_tags, format);
1248 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
1249 else if (st->codec->codec_type == AVMEDIA_TYPE_DATA ||
1250 (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE &&
1251 st->codec->codec_id == AV_CODEC_ID_NONE)) {
1252 id = ff_codec_get_id(ff_codec_movsubtitle_tags, format);
1254 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
1258 st->codec->codec_tag = format;
1263 static void mov_parse_stsd_video(MOVContext *c, AVIOContext *pb,
1264 AVStream *st, MOVStreamContext *sc)
1266 unsigned int color_depth, len, j;
1267 int color_greyscale;
1270 avio_rb16(pb); /* version */
1271 avio_rb16(pb); /* revision level */
1272 avio_rb32(pb); /* vendor */
1273 avio_rb32(pb); /* temporal quality */
1274 avio_rb32(pb); /* spatial quality */
1276 st->codec->width = avio_rb16(pb); /* width */
1277 st->codec->height = avio_rb16(pb); /* height */
1279 avio_rb32(pb); /* horiz resolution */
1280 avio_rb32(pb); /* vert resolution */
1281 avio_rb32(pb); /* data size, always 0 */
1282 avio_rb16(pb); /* frames per samples */
1284 len = avio_r8(pb); /* codec name, pascal string */
1287 mov_read_mac_string(c, pb, len, st->codec->codec_name, 32);
1289 avio_skip(pb, 31 - len);
1290 /* codec_tag YV12 triggers an UV swap in rawdec.c */
1291 if (!memcmp(st->codec->codec_name, "Planar Y'CbCr 8-bit 4:2:0", 25)) {
1292 st->codec->codec_tag = MKTAG('I', '4', '2', '0');
1293 st->codec->width &= ~1;
1294 st->codec->height &= ~1;
1296 /* Flash Media Server uses tag H263 with Sorenson Spark */
1297 if (st->codec->codec_tag == MKTAG('H','2','6','3') &&
1298 !memcmp(st->codec->codec_name, "Sorenson H263", 13))
1299 st->codec->codec_id = AV_CODEC_ID_FLV1;
1301 st->codec->bits_per_coded_sample = avio_rb16(pb); /* depth */
1302 color_table_id = avio_rb16(pb); /* colortable id */
1303 av_dlog(c->fc, "depth %d, ctab id %d\n",
1304 st->codec->bits_per_coded_sample, color_table_id);
1305 /* figure out the palette situation */
1306 color_depth = st->codec->bits_per_coded_sample & 0x1F;
1307 color_greyscale = st->codec->bits_per_coded_sample & 0x20;
1309 /* if the depth is 2, 4, or 8 bpp, file is palettized */
1310 if ((color_depth == 2) || (color_depth == 4) || (color_depth == 8)) {
1311 /* for palette traversal */
1312 unsigned int color_start, color_count, color_end;
1313 unsigned char a, r, g, b;
1315 if (color_greyscale) {
1316 int color_index, color_dec;
1317 /* compute the greyscale palette */
1318 st->codec->bits_per_coded_sample = color_depth;
1319 color_count = 1 << color_depth;
1321 color_dec = 256 / (color_count - 1);
1322 for (j = 0; j < color_count; j++) {
1323 if (st->codec->codec_id == AV_CODEC_ID_CINEPAK){
1324 r = g = b = color_count - 1 - color_index;
1326 r = g = b = color_index;
1327 sc->palette[j] = (0xFFU << 24) | (r << 16) | (g << 8) | (b);
1328 color_index -= color_dec;
1329 if (color_index < 0)
1332 } else if (color_table_id) {
1333 const uint8_t *color_table;
1334 /* if flag bit 3 is set, use the default palette */
1335 color_count = 1 << color_depth;
1336 if (color_depth == 2)
1337 color_table = ff_qt_default_palette_4;
1338 else if (color_depth == 4)
1339 color_table = ff_qt_default_palette_16;
1341 color_table = ff_qt_default_palette_256;
1343 for (j = 0; j < color_count; j++) {
1344 r = color_table[j * 3 + 0];
1345 g = color_table[j * 3 + 1];
1346 b = color_table[j * 3 + 2];
1347 sc->palette[j] = (0xFFU << 24) | (r << 16) | (g << 8) | (b);
1350 /* load the palette from the file */
1351 color_start = avio_rb32(pb);
1352 color_count = avio_rb16(pb);
1353 color_end = avio_rb16(pb);
1354 if ((color_start <= 255) && (color_end <= 255)) {
1355 for (j = color_start; j <= color_end; j++) {
1356 /* each A, R, G, or B component is 16 bits;
1357 * only use the top 8 bits */
1366 sc->palette[j] = (a << 24 ) | (r << 16) | (g << 8) | (b);
1370 sc->has_palette = 1;
1374 static void mov_parse_stsd_audio(MOVContext *c, AVIOContext *pb,
1375 AVStream *st, MOVStreamContext *sc)
1377 int bits_per_sample, flags;
1378 uint16_t version = avio_rb16(pb);
1379 AVDictionaryEntry *compatible_brands = av_dict_get(c->fc->metadata, "compatible_brands", NULL, AV_DICT_MATCH_CASE);
1381 avio_rb16(pb); /* revision level */
1382 avio_rb32(pb); /* vendor */
1384 st->codec->channels = avio_rb16(pb); /* channel count */
1385 st->codec->bits_per_coded_sample = avio_rb16(pb); /* sample size */
1386 av_dlog(c->fc, "audio channels %d\n", st->codec->channels);
1388 sc->audio_cid = avio_rb16(pb);
1389 avio_rb16(pb); /* packet size = 0 */
1391 st->codec->sample_rate = ((avio_rb32(pb) >> 16));
1393 // Read QT version 1 fields. In version 0 these do not exist.
1394 av_dlog(c->fc, "version =%d, isom =%d\n", version, c->isom);
1396 (compatible_brands && strstr(compatible_brands->value, "qt "))) {
1399 sc->samples_per_frame = avio_rb32(pb);
1400 avio_rb32(pb); /* bytes per packet */
1401 sc->bytes_per_frame = avio_rb32(pb);
1402 avio_rb32(pb); /* bytes per sample */
1403 } else if (version == 2) {
1404 avio_rb32(pb); /* sizeof struct only */
1405 st->codec->sample_rate = av_int2double(avio_rb64(pb));
1406 st->codec->channels = avio_rb32(pb);
1407 avio_rb32(pb); /* always 0x7F000000 */
1408 st->codec->bits_per_coded_sample = avio_rb32(pb);
1410 flags = avio_rb32(pb); /* lpcm format specific flag */
1411 sc->bytes_per_frame = avio_rb32(pb);
1412 sc->samples_per_frame = avio_rb32(pb);
1413 if (st->codec->codec_tag == MKTAG('l','p','c','m'))
1414 st->codec->codec_id =
1415 ff_mov_get_lpcm_codec_id(st->codec->bits_per_coded_sample,
1420 switch (st->codec->codec_id) {
1421 case AV_CODEC_ID_PCM_S8:
1422 case AV_CODEC_ID_PCM_U8:
1423 if (st->codec->bits_per_coded_sample == 16)
1424 st->codec->codec_id = AV_CODEC_ID_PCM_S16BE;
1426 case AV_CODEC_ID_PCM_S16LE:
1427 case AV_CODEC_ID_PCM_S16BE:
1428 if (st->codec->bits_per_coded_sample == 8)
1429 st->codec->codec_id = AV_CODEC_ID_PCM_S8;
1430 else if (st->codec->bits_per_coded_sample == 24)
1431 st->codec->codec_id =
1432 st->codec->codec_id == AV_CODEC_ID_PCM_S16BE ?
1433 AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE;
1435 /* set values for old format before stsd version 1 appeared */
1436 case AV_CODEC_ID_MACE3:
1437 sc->samples_per_frame = 6;
1438 sc->bytes_per_frame = 2 * st->codec->channels;
1440 case AV_CODEC_ID_MACE6:
1441 sc->samples_per_frame = 6;
1442 sc->bytes_per_frame = 1 * st->codec->channels;
1444 case AV_CODEC_ID_ADPCM_IMA_QT:
1445 sc->samples_per_frame = 64;
1446 sc->bytes_per_frame = 34 * st->codec->channels;
1448 case AV_CODEC_ID_GSM:
1449 sc->samples_per_frame = 160;
1450 sc->bytes_per_frame = 33;
1456 bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
1457 if (bits_per_sample) {
1458 st->codec->bits_per_coded_sample = bits_per_sample;
1459 sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
1463 static void mov_parse_stsd_subtitle(MOVContext *c, AVIOContext *pb,
1464 AVStream *st, MOVStreamContext *sc,
1467 // ttxt stsd contains display flags, justification, background
1468 // color, fonts, and default styles, so fake an atom to read it
1469 MOVAtom fake_atom = { .size = size };
1470 // mp4s contains a regular esds atom
1471 if (st->codec->codec_tag != AV_RL32("mp4s"))
1472 mov_read_glbl(c, pb, fake_atom);
1473 st->codec->width = sc->width;
1474 st->codec->height = sc->height;
1477 static int mov_parse_stsd_data(MOVContext *c, AVIOContext *pb,
1478 AVStream *st, MOVStreamContext *sc,
1481 if (st->codec->codec_tag == MKTAG('t','m','c','d')) {
1482 if (ff_alloc_extradata(st->codec, size))
1483 return AVERROR(ENOMEM);
1484 avio_read(pb, st->codec->extradata, size);
1486 MOVStreamContext *tmcd_ctx = st->priv_data;
1488 val = AV_RB32(st->codec->extradata + 4);
1489 tmcd_ctx->tmcd_flags = val;
1491 st->codec->flags2 |= CODEC_FLAG2_DROP_FRAME_TIMECODE;
1492 st->codec->time_base.den = st->codec->extradata[16]; /* number of frame */
1493 st->codec->time_base.num = 1;
1496 /* other codec type, just skip (rtp, mp4s ...) */
1497 avio_skip(pb, size);
1502 static int mov_finalize_stsd_codec(MOVContext *c, AVIOContext *pb,
1503 AVStream *st, MOVStreamContext *sc)
1505 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
1506 !st->codec->sample_rate && sc->time_scale > 1)
1507 st->codec->sample_rate = sc->time_scale;
1509 /* special codec parameters handling */
1510 switch (st->codec->codec_id) {
1511 #if CONFIG_DV_DEMUXER
1512 case AV_CODEC_ID_DVAUDIO:
1513 c->dv_fctx = avformat_alloc_context();
1514 c->dv_demux = avpriv_dv_init_demux(c->dv_fctx);
1516 av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
1517 return AVERROR(ENOMEM);
1519 sc->dv_audio_container = 1;
1520 st->codec->codec_id = AV_CODEC_ID_PCM_S16LE;
1523 /* no ifdef since parameters are always those */
1524 case AV_CODEC_ID_QCELP:
1525 st->codec->channels = 1;
1526 // force sample rate for qcelp when not stored in mov
1527 if (st->codec->codec_tag != MKTAG('Q','c','l','p'))
1528 st->codec->sample_rate = 8000;
1530 case AV_CODEC_ID_AMR_NB:
1531 st->codec->channels = 1;
1532 /* force sample rate for amr, stsd in 3gp does not store sample rate */
1533 st->codec->sample_rate = 8000;
1535 case AV_CODEC_ID_AMR_WB:
1536 st->codec->channels = 1;
1537 st->codec->sample_rate = 16000;
1539 case AV_CODEC_ID_MP2:
1540 case AV_CODEC_ID_MP3:
1541 /* force type after stsd for m1a hdlr */
1542 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
1543 st->need_parsing = AVSTREAM_PARSE_FULL;
1545 case AV_CODEC_ID_GSM:
1546 case AV_CODEC_ID_ADPCM_MS:
1547 case AV_CODEC_ID_ADPCM_IMA_WAV:
1548 case AV_CODEC_ID_ILBC:
1549 case AV_CODEC_ID_MACE3:
1550 case AV_CODEC_ID_MACE6:
1551 case AV_CODEC_ID_QDM2:
1552 st->codec->block_align = sc->bytes_per_frame;
1554 case AV_CODEC_ID_ALAC:
1555 if (st->codec->extradata_size == 36) {
1556 st->codec->channels = AV_RB8 (st->codec->extradata + 21);
1557 st->codec->sample_rate = AV_RB32(st->codec->extradata + 32);
1560 case AV_CODEC_ID_AC3:
1561 st->need_parsing = AVSTREAM_PARSE_FULL;
1563 case AV_CODEC_ID_MPEG1VIDEO:
1564 st->need_parsing = AVSTREAM_PARSE_FULL;
1566 case AV_CODEC_ID_VC1:
1567 st->need_parsing = AVSTREAM_PARSE_FULL;
1575 static int mov_skip_multiple_stsd(MOVContext *c, AVIOContext *pb,
1576 int codec_tag, int format,
1579 int video_codec_id = ff_codec_get_id(ff_codec_movvideo_tags, format);
1582 (codec_tag != format &&
1583 (c->fc->video_codec_id ? video_codec_id != c->fc->video_codec_id
1584 : codec_tag != MKTAG('j','p','e','g')))) {
1585 /* Multiple fourcc, we skip JPEG. This is not correct, we should
1586 * export it as a separate AVStream but this needs a few changes
1587 * in the MOV demuxer, patch welcome. */
1589 av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n");
1590 avio_skip(pb, size);
1593 if ( codec_tag == AV_RL32("avc1") ||
1594 codec_tag == AV_RL32("hvc1") ||
1595 codec_tag == AV_RL32("hev1")
1597 av_log(c->fc, AV_LOG_WARNING, "Concatenated H.264 or H.265 might not play correctly.\n");
1602 int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries)
1605 MOVStreamContext *sc;
1606 int pseudo_stream_id;
1608 if (c->fc->nb_streams < 1)
1610 st = c->fc->streams[c->fc->nb_streams-1];
1613 for (pseudo_stream_id = 0;
1614 pseudo_stream_id < entries && !pb->eof_reached;
1615 pseudo_stream_id++) {
1616 //Parsing Sample description table
1618 int ret, dref_id = 1;
1619 MOVAtom a = { AV_RL32("stsd") };
1620 int64_t start_pos = avio_tell(pb);
1621 int64_t size = avio_rb32(pb); /* size */
1622 uint32_t format = avio_rl32(pb); /* data format */
1625 avio_rb32(pb); /* reserved */
1626 avio_rb16(pb); /* reserved */
1627 dref_id = avio_rb16(pb);
1628 }else if (size <= 7){
1629 av_log(c->fc, AV_LOG_ERROR, "invalid size %"PRId64" in stsd\n", size);
1630 return AVERROR_INVALIDDATA;
1633 if (mov_skip_multiple_stsd(c, pb, st->codec->codec_tag, format,
1634 size - (avio_tell(pb) - start_pos)))
1637 sc->pseudo_stream_id = st->codec->codec_tag ? -1 : pseudo_stream_id;
1638 sc->dref_id= dref_id;
1640 id = mov_codec_id(st, format);
1642 av_dlog(c->fc, "size=%"PRId64" 4CC= %c%c%c%c codec_type=%d\n", size,
1643 (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff,
1644 (format >> 24) & 0xff, st->codec->codec_type);
1646 if (st->codec->codec_type==AVMEDIA_TYPE_VIDEO) {
1647 st->codec->codec_id = id;
1648 mov_parse_stsd_video(c, pb, st, sc);
1649 } else if (st->codec->codec_type==AVMEDIA_TYPE_AUDIO) {
1650 st->codec->codec_id = id;
1651 mov_parse_stsd_audio(c, pb, st, sc);
1652 } else if (st->codec->codec_type==AVMEDIA_TYPE_SUBTITLE){
1653 st->codec->codec_id = id;
1654 mov_parse_stsd_subtitle(c, pb, st, sc,
1655 size - (avio_tell(pb) - start_pos));
1657 ret = mov_parse_stsd_data(c, pb, st, sc,
1658 size - (avio_tell(pb) - start_pos));
1662 /* this will read extra atoms at the end (wave, alac, damr, avcC, hvcC, SMI ...) */
1663 a.size = size - (avio_tell(pb) - start_pos);
1665 if ((ret = mov_read_default(c, pb, a)) < 0)
1667 } else if (a.size > 0)
1668 avio_skip(pb, a.size);
1671 if (pb->eof_reached)
1674 return mov_finalize_stsd_codec(c, pb, st, sc);
1677 static int mov_read_stsd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1681 avio_r8(pb); /* version */
1682 avio_rb24(pb); /* flags */
1683 entries = avio_rb32(pb);
1685 return ff_mov_read_stsd_entries(c, pb, entries);
1688 static int mov_read_stsc(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1691 MOVStreamContext *sc;
1692 unsigned int i, entries;
1694 if (c->fc->nb_streams < 1)
1696 st = c->fc->streams[c->fc->nb_streams-1];
1699 avio_r8(pb); /* version */
1700 avio_rb24(pb); /* flags */
1702 entries = avio_rb32(pb);
1704 av_dlog(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
1708 if (entries >= UINT_MAX / sizeof(*sc->stsc_data))
1709 return AVERROR_INVALIDDATA;
1710 sc->stsc_data = av_malloc(entries * sizeof(*sc->stsc_data));
1712 return AVERROR(ENOMEM);
1714 for (i = 0; i < entries && !pb->eof_reached; i++) {
1715 sc->stsc_data[i].first = avio_rb32(pb);
1716 sc->stsc_data[i].count = avio_rb32(pb);
1717 sc->stsc_data[i].id = avio_rb32(pb);
1722 if (pb->eof_reached)
1728 static int mov_read_stps(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1731 MOVStreamContext *sc;
1732 unsigned i, entries;
1734 if (c->fc->nb_streams < 1)
1736 st = c->fc->streams[c->fc->nb_streams-1];
1739 avio_rb32(pb); // version + flags
1741 entries = avio_rb32(pb);
1742 if (entries >= UINT_MAX / sizeof(*sc->stps_data))
1743 return AVERROR_INVALIDDATA;
1744 sc->stps_data = av_malloc(entries * sizeof(*sc->stps_data));
1746 return AVERROR(ENOMEM);
1748 for (i = 0; i < entries && !pb->eof_reached; i++) {
1749 sc->stps_data[i] = avio_rb32(pb);
1750 //av_dlog(c->fc, "stps %d\n", sc->stps_data[i]);
1755 if (pb->eof_reached)
1761 static int mov_read_stss(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1764 MOVStreamContext *sc;
1765 unsigned int i, entries;
1767 if (c->fc->nb_streams < 1)
1769 st = c->fc->streams[c->fc->nb_streams-1];
1772 avio_r8(pb); /* version */
1773 avio_rb24(pb); /* flags */
1775 entries = avio_rb32(pb);
1777 av_dlog(c->fc, "keyframe_count = %d\n", entries);
1781 sc->keyframe_absent = 1;
1782 if (!st->need_parsing && st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
1783 st->need_parsing = AVSTREAM_PARSE_HEADERS;
1786 if (entries >= UINT_MAX / sizeof(int))
1787 return AVERROR_INVALIDDATA;
1788 sc->keyframes = av_malloc(entries * sizeof(int));
1790 return AVERROR(ENOMEM);
1792 for (i = 0; i < entries && !pb->eof_reached; i++) {
1793 sc->keyframes[i] = avio_rb32(pb);
1794 //av_dlog(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
1797 sc->keyframe_count = i;
1799 if (pb->eof_reached)
1805 static int mov_read_stsz(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1808 MOVStreamContext *sc;
1809 unsigned int i, entries, sample_size, field_size, num_bytes;
1813 if (c->fc->nb_streams < 1)
1815 st = c->fc->streams[c->fc->nb_streams-1];
1818 avio_r8(pb); /* version */
1819 avio_rb24(pb); /* flags */
1821 if (atom.type == MKTAG('s','t','s','z')) {
1822 sample_size = avio_rb32(pb);
1823 if (!sc->sample_size) /* do not overwrite value computed in stsd */
1824 sc->sample_size = sample_size;
1825 sc->stsz_sample_size = sample_size;
1829 avio_rb24(pb); /* reserved */
1830 field_size = avio_r8(pb);
1832 entries = avio_rb32(pb);
1834 av_dlog(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, entries);
1836 sc->sample_count = entries;
1840 if (field_size != 4 && field_size != 8 && field_size != 16 && field_size != 32) {
1841 av_log(c->fc, AV_LOG_ERROR, "Invalid sample field size %d\n", field_size);
1842 return AVERROR_INVALIDDATA;
1847 if (entries >= UINT_MAX / sizeof(int) || entries >= (UINT_MAX - 4) / field_size)
1848 return AVERROR_INVALIDDATA;
1849 sc->sample_sizes = av_malloc(entries * sizeof(int));
1850 if (!sc->sample_sizes)
1851 return AVERROR(ENOMEM);
1853 num_bytes = (entries*field_size+4)>>3;
1855 buf = av_malloc(num_bytes+FF_INPUT_BUFFER_PADDING_SIZE);
1857 av_freep(&sc->sample_sizes);
1858 return AVERROR(ENOMEM);
1861 if (avio_read(pb, buf, num_bytes) < num_bytes) {
1862 av_freep(&sc->sample_sizes);
1864 return AVERROR_INVALIDDATA;
1867 init_get_bits(&gb, buf, 8*num_bytes);
1869 for (i = 0; i < entries && !pb->eof_reached; i++) {
1870 sc->sample_sizes[i] = get_bits_long(&gb, field_size);
1871 sc->data_size += sc->sample_sizes[i];
1874 sc->sample_count = i;
1876 if (pb->eof_reached)
1883 static int mov_read_stts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1886 MOVStreamContext *sc;
1887 unsigned int i, entries;
1889 int64_t total_sample_count=0;
1891 if (c->fc->nb_streams < 1)
1893 st = c->fc->streams[c->fc->nb_streams-1];
1896 avio_r8(pb); /* version */
1897 avio_rb24(pb); /* flags */
1898 entries = avio_rb32(pb);
1900 av_dlog(c->fc, "track[%i].stts.entries = %i\n",
1901 c->fc->nb_streams-1, entries);
1903 if (entries >= UINT_MAX / sizeof(*sc->stts_data))
1906 sc->stts_data = av_malloc(entries * sizeof(*sc->stts_data));
1908 return AVERROR(ENOMEM);
1910 for (i = 0; i < entries && !pb->eof_reached; i++) {
1911 int sample_duration;
1914 sample_count=avio_rb32(pb);
1915 sample_duration = avio_rb32(pb);
1917 /* sample_duration < 0 is invalid based on the spec */
1918 if (sample_duration < 0) {
1919 av_log(c->fc, AV_LOG_ERROR, "Invalid SampleDelta in STTS %d\n", sample_duration);
1920 sample_duration = 1;
1922 if (sample_count < 0) {
1923 av_log(c->fc, AV_LOG_ERROR, "Invalid sample_count=%d\n", sample_count);
1924 return AVERROR_INVALIDDATA;
1926 sc->stts_data[i].count= sample_count;
1927 sc->stts_data[i].duration= sample_duration;
1929 av_dlog(c->fc, "sample_count=%d, sample_duration=%d\n",
1930 sample_count, sample_duration);
1932 duration+=(int64_t)sample_duration*sample_count;
1933 total_sample_count+=sample_count;
1938 if (pb->eof_reached)
1941 st->nb_frames= total_sample_count;
1943 st->duration= duration;
1944 sc->track_end = duration;
1948 static void mov_update_dts_shift(MOVStreamContext *sc, int duration)
1951 sc->dts_shift = FFMAX(sc->dts_shift, -duration);
1955 static int mov_read_ctts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1958 MOVStreamContext *sc;
1959 unsigned int i, entries;
1961 if (c->fc->nb_streams < 1)
1963 st = c->fc->streams[c->fc->nb_streams-1];
1966 avio_r8(pb); /* version */
1967 avio_rb24(pb); /* flags */
1968 entries = avio_rb32(pb);
1970 av_dlog(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
1974 if (entries >= UINT_MAX / sizeof(*sc->ctts_data))
1975 return AVERROR_INVALIDDATA;
1976 sc->ctts_data = av_malloc(entries * sizeof(*sc->ctts_data));
1978 return AVERROR(ENOMEM);
1980 for (i = 0; i < entries && !pb->eof_reached; i++) {
1981 int count =avio_rb32(pb);
1982 int duration =avio_rb32(pb);
1984 sc->ctts_data[i].count = count;
1985 sc->ctts_data[i].duration= duration;
1987 av_dlog(c->fc, "count=%d, duration=%d\n",
1990 if (FFABS(duration) > (1<<28) && i+2<entries) {
1991 av_log(c->fc, AV_LOG_WARNING, "CTTS invalid\n");
1992 av_freep(&sc->ctts_data);
1998 mov_update_dts_shift(sc, duration);
2003 if (pb->eof_reached)
2006 av_dlog(c->fc, "dts shift %d\n", sc->dts_shift);
2011 static int mov_read_sbgp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2014 MOVStreamContext *sc;
2015 unsigned int i, entries;
2017 uint32_t grouping_type;
2019 if (c->fc->nb_streams < 1)
2021 st = c->fc->streams[c->fc->nb_streams-1];
2024 version = avio_r8(pb); /* version */
2025 avio_rb24(pb); /* flags */
2026 grouping_type = avio_rl32(pb);
2027 if (grouping_type != MKTAG( 'r','a','p',' '))
2028 return 0; /* only support 'rap ' grouping */
2030 avio_rb32(pb); /* grouping_type_parameter */
2032 entries = avio_rb32(pb);
2035 if (entries >= UINT_MAX / sizeof(*sc->rap_group))
2036 return AVERROR_INVALIDDATA;
2037 sc->rap_group = av_malloc(entries * sizeof(*sc->rap_group));
2039 return AVERROR(ENOMEM);
2041 for (i = 0; i < entries && !pb->eof_reached; i++) {
2042 sc->rap_group[i].count = avio_rb32(pb); /* sample_count */
2043 sc->rap_group[i].index = avio_rb32(pb); /* group_description_index */
2046 sc->rap_group_count = i;
2048 return pb->eof_reached ? AVERROR_EOF : 0;
2051 static void mov_build_index(MOVContext *mov, AVStream *st)
2053 MOVStreamContext *sc = st->priv_data;
2054 int64_t current_offset;
2055 int64_t current_dts = 0;
2056 unsigned int stts_index = 0;
2057 unsigned int stsc_index = 0;
2058 unsigned int stss_index = 0;
2059 unsigned int stps_index = 0;
2061 uint64_t stream_size = 0;
2063 /* adjust first dts according to edit list */
2064 if ((sc->empty_duration || sc->start_time) && mov->time_scale > 0) {
2065 if (sc->empty_duration)
2066 sc->empty_duration = av_rescale(sc->empty_duration, sc->time_scale, mov->time_scale);
2067 sc->time_offset = sc->start_time - sc->empty_duration;
2068 current_dts = -sc->time_offset;
2069 if (sc->ctts_count>0 && sc->stts_count>0 &&
2070 sc->ctts_data[0].duration / FFMAX(sc->stts_data[0].duration, 1) > 16) {
2071 /* more than 16 frames delay, dts are likely wrong
2072 this happens with files created by iMovie */
2074 st->codec->has_b_frames = 1;
2078 /* only use old uncompressed audio chunk demuxing when stts specifies it */
2079 if (!(st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
2080 sc->stts_count == 1 && sc->stts_data[0].duration == 1)) {
2081 unsigned int current_sample = 0;
2082 unsigned int stts_sample = 0;
2083 unsigned int sample_size;
2084 unsigned int distance = 0;
2085 unsigned int rap_group_index = 0;
2086 unsigned int rap_group_sample = 0;
2087 int rap_group_present = sc->rap_group_count && sc->rap_group;
2088 int key_off = (sc->keyframe_count && sc->keyframes[0] > 0) || (sc->stps_count && sc->stps_data[0] > 0);
2090 current_dts -= sc->dts_shift;
2092 if (!sc->sample_count || st->nb_index_entries)
2094 if (sc->sample_count >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries)
2096 if (av_reallocp_array(&st->index_entries,
2097 st->nb_index_entries + sc->sample_count,
2098 sizeof(*st->index_entries)) < 0) {
2099 st->nb_index_entries = 0;
2102 st->index_entries_allocated_size = (st->nb_index_entries + sc->sample_count) * sizeof(*st->index_entries);
2104 for (i = 0; i < sc->chunk_count; i++) {
2105 int64_t next_offset = i+1 < sc->chunk_count ? sc->chunk_offsets[i+1] : INT64_MAX;
2106 current_offset = sc->chunk_offsets[i];
2107 while (stsc_index + 1 < sc->stsc_count &&
2108 i + 1 == sc->stsc_data[stsc_index + 1].first)
2111 if (next_offset > current_offset && sc->sample_size>0 && sc->sample_size < sc->stsz_sample_size &&
2112 sc->stsc_data[stsc_index].count * (int64_t)sc->stsz_sample_size > next_offset - current_offset) {
2113 av_log(mov->fc, AV_LOG_WARNING, "STSZ sample size %d invalid (too large), ignoring\n", sc->stsz_sample_size);
2114 sc->stsz_sample_size = sc->sample_size;
2116 if (sc->stsz_sample_size>0 && sc->stsz_sample_size < sc->sample_size) {
2117 av_log(mov->fc, AV_LOG_WARNING, "STSZ sample size %d invalid (too small), ignoring\n", sc->stsz_sample_size);
2118 sc->stsz_sample_size = sc->sample_size;
2121 for (j = 0; j < sc->stsc_data[stsc_index].count; j++) {
2123 if (current_sample >= sc->sample_count) {
2124 av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
2128 if (!sc->keyframe_absent && (!sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index])) {
2130 if (stss_index + 1 < sc->keyframe_count)
2132 } else if (sc->stps_count && current_sample+key_off == sc->stps_data[stps_index]) {
2134 if (stps_index + 1 < sc->stps_count)
2137 if (rap_group_present && rap_group_index < sc->rap_group_count) {
2138 if (sc->rap_group[rap_group_index].index > 0)
2140 if (++rap_group_sample == sc->rap_group[rap_group_index].count) {
2141 rap_group_sample = 0;
2147 sample_size = sc->stsz_sample_size > 0 ? sc->stsz_sample_size : sc->sample_sizes[current_sample];
2148 if (sc->pseudo_stream_id == -1 ||
2149 sc->stsc_data[stsc_index].id - 1 == sc->pseudo_stream_id) {
2150 AVIndexEntry *e = &st->index_entries[st->nb_index_entries++];
2151 e->pos = current_offset;
2152 e->timestamp = current_dts;
2153 e->size = sample_size;
2154 e->min_distance = distance;
2155 e->flags = keyframe ? AVINDEX_KEYFRAME : 0;
2156 av_dlog(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
2157 "size %d, distance %d, keyframe %d\n", st->index, current_sample,
2158 current_offset, current_dts, sample_size, distance, keyframe);
2161 current_offset += sample_size;
2162 stream_size += sample_size;
2163 current_dts += sc->stts_data[stts_index].duration;
2167 if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
2173 if (st->duration > 0)
2174 st->codec->bit_rate = stream_size*8*sc->time_scale/st->duration;
2176 unsigned chunk_samples, total = 0;
2178 // compute total chunk count
2179 for (i = 0; i < sc->stsc_count; i++) {
2180 unsigned count, chunk_count;
2182 chunk_samples = sc->stsc_data[i].count;
2183 if (i != sc->stsc_count - 1 &&
2184 sc->samples_per_frame && chunk_samples % sc->samples_per_frame) {
2185 av_log(mov->fc, AV_LOG_ERROR, "error unaligned chunk\n");
2189 if (sc->samples_per_frame >= 160) { // gsm
2190 count = chunk_samples / sc->samples_per_frame;
2191 } else if (sc->samples_per_frame > 1) {
2192 unsigned samples = (1024/sc->samples_per_frame)*sc->samples_per_frame;
2193 count = (chunk_samples+samples-1) / samples;
2195 count = (chunk_samples+1023) / 1024;
2198 if (i < sc->stsc_count - 1)
2199 chunk_count = sc->stsc_data[i+1].first - sc->stsc_data[i].first;
2201 chunk_count = sc->chunk_count - (sc->stsc_data[i].first - 1);
2202 total += chunk_count * count;
2205 av_dlog(mov->fc, "chunk count %d\n", total);
2206 if (total >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries)
2208 if (av_reallocp_array(&st->index_entries,
2209 st->nb_index_entries + total,
2210 sizeof(*st->index_entries)) < 0) {
2211 st->nb_index_entries = 0;
2214 st->index_entries_allocated_size = (st->nb_index_entries + total) * sizeof(*st->index_entries);
2217 for (i = 0; i < sc->chunk_count; i++) {
2218 current_offset = sc->chunk_offsets[i];
2219 if (stsc_index + 1 < sc->stsc_count &&
2220 i + 1 == sc->stsc_data[stsc_index + 1].first)
2222 chunk_samples = sc->stsc_data[stsc_index].count;
2224 while (chunk_samples > 0) {
2226 unsigned size, samples;
2228 if (sc->samples_per_frame >= 160) { // gsm
2229 samples = sc->samples_per_frame;
2230 size = sc->bytes_per_frame;
2232 if (sc->samples_per_frame > 1) {
2233 samples = FFMIN((1024 / sc->samples_per_frame)*
2234 sc->samples_per_frame, chunk_samples);
2235 size = (samples / sc->samples_per_frame) * sc->bytes_per_frame;
2237 samples = FFMIN(1024, chunk_samples);
2238 size = samples * sc->sample_size;
2242 if (st->nb_index_entries >= total) {
2243 av_log(mov->fc, AV_LOG_ERROR, "wrong chunk count %d\n", total);
2246 e = &st->index_entries[st->nb_index_entries++];
2247 e->pos = current_offset;
2248 e->timestamp = current_dts;
2250 e->min_distance = 0;
2251 e->flags = AVINDEX_KEYFRAME;
2252 av_dlog(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", "
2253 "size %d, duration %d\n", st->index, i, current_offset, current_dts,
2256 current_offset += size;
2257 current_dts += samples;
2258 chunk_samples -= samples;
2264 static int mov_open_dref(AVIOContext **pb, const char *src, MOVDref *ref,
2265 AVIOInterruptCB *int_cb, int use_absolute_path, AVFormatContext *fc)
2267 /* try relative path, we do not try the absolute because it can leak information about our
2268 system to an attacker */
2269 if (ref->nlvl_to > 0 && ref->nlvl_from > 0) {
2270 char filename[1024];
2271 const char *src_path;
2274 /* find a source dir */
2275 src_path = strrchr(src, '/');
2281 /* find a next level down to target */
2282 for (i = 0, l = strlen(ref->path) - 1; l >= 0; l--)
2283 if (ref->path[l] == '/') {
2284 if (i == ref->nlvl_to - 1)
2290 /* compose filename if next level down to target was found */
2291 if (i == ref->nlvl_to - 1 && src_path - src < sizeof(filename)) {
2292 memcpy(filename, src, src_path - src);
2293 filename[src_path - src] = 0;
2295 for (i = 1; i < ref->nlvl_from; i++)
2296 av_strlcat(filename, "../", 1024);
2298 av_strlcat(filename, ref->path + l + 1, 1024);
2300 if (!avio_open2(pb, filename, AVIO_FLAG_READ, int_cb, NULL))
2303 } else if (use_absolute_path) {
2304 av_log(fc, AV_LOG_WARNING, "Using absolute path on user request, "
2305 "this is a possible security issue\n");
2306 if (!avio_open2(pb, ref->path, AVIO_FLAG_READ, int_cb, NULL))
2310 return AVERROR(ENOENT);
2313 static void fix_timescale(MOVContext *c, MOVStreamContext *sc)
2315 if (sc->time_scale <= 0) {
2316 av_log(c->fc, AV_LOG_WARNING, "stream %d, timescale not set\n", sc->ffindex);
2317 sc->time_scale = c->time_scale;
2318 if (sc->time_scale <= 0)
2323 static int mov_read_trak(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2326 MOVStreamContext *sc;
2329 st = avformat_new_stream(c->fc, NULL);
2330 if (!st) return AVERROR(ENOMEM);
2331 st->id = c->fc->nb_streams;
2332 sc = av_mallocz(sizeof(MOVStreamContext));
2333 if (!sc) return AVERROR(ENOMEM);
2336 st->codec->codec_type = AVMEDIA_TYPE_DATA;
2337 sc->ffindex = st->index;
2339 if ((ret = mov_read_default(c, pb, atom)) < 0)
2343 if (sc->chunk_count && (!sc->stts_count || !sc->stsc_count ||
2344 (!sc->sample_size && !sc->sample_count))) {
2345 av_log(c->fc, AV_LOG_ERROR, "stream %d, missing mandatory atoms, broken header\n",
2350 fix_timescale(c, sc);
2352 avpriv_set_pts_info(st, 64, 1, sc->time_scale);
2354 mov_build_index(c, st);
2356 if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) {
2357 MOVDref *dref = &sc->drefs[sc->dref_id - 1];
2358 if (mov_open_dref(&sc->pb, c->fc->filename, dref, &c->fc->interrupt_callback,
2359 c->use_absolute_path, c->fc) < 0)
2360 av_log(c->fc, AV_LOG_ERROR,
2361 "stream %d, error opening alias: path='%s', dir='%s', "
2362 "filename='%s', volume='%s', nlvl_from=%d, nlvl_to=%d\n",
2363 st->index, dref->path, dref->dir, dref->filename,
2364 dref->volume, dref->nlvl_from, dref->nlvl_to);
2367 sc->pb_is_copied = 1;
2370 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2371 if (!st->sample_aspect_ratio.num &&
2372 (st->codec->width != sc->width || st->codec->height != sc->height)) {
2373 st->sample_aspect_ratio = av_d2q(((double)st->codec->height * sc->width) /
2374 ((double)st->codec->width * sc->height), INT_MAX);
2377 if (st->duration > 0)
2378 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
2379 sc->time_scale*st->nb_frames, st->duration, INT_MAX);
2381 #if FF_API_R_FRAME_RATE
2382 if (sc->stts_count == 1 || (sc->stts_count == 2 && sc->stts_data[1].count == 1))
2383 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den,
2384 sc->time_scale, sc->stts_data[0].duration, INT_MAX);
2388 // done for ai5q, ai52, ai55, ai1q, ai12 and ai15.
2389 if (!st->codec->extradata_size && st->codec->codec_id == AV_CODEC_ID_H264 &&
2390 TAG_IS_AVCI(st->codec->codec_tag)) {
2391 ret = ff_generate_avci_extradata(st);
2396 switch (st->codec->codec_id) {
2397 #if CONFIG_H261_DECODER
2398 case AV_CODEC_ID_H261:
2400 #if CONFIG_H263_DECODER
2401 case AV_CODEC_ID_H263:
2403 #if CONFIG_MPEG4_DECODER
2404 case AV_CODEC_ID_MPEG4:
2406 st->codec->width = 0; /* let decoder init width/height */
2407 st->codec->height= 0;
2411 /* Do not need those anymore. */
2412 av_freep(&sc->chunk_offsets);
2413 av_freep(&sc->stsc_data);
2414 av_freep(&sc->sample_sizes);
2415 av_freep(&sc->keyframes);
2416 av_freep(&sc->stts_data);
2417 av_freep(&sc->stps_data);
2418 av_freep(&sc->rap_group);
2423 static int mov_read_ilst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2426 c->itunes_metadata = 1;
2427 ret = mov_read_default(c, pb, atom);
2428 c->itunes_metadata = 0;
2432 static int mov_read_meta(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2434 while (atom.size > 8) {
2435 uint32_t tag = avio_rl32(pb);
2437 if (tag == MKTAG('h','d','l','r')) {
2438 avio_seek(pb, -8, SEEK_CUR);
2440 return mov_read_default(c, pb, atom);
2446 static int mov_read_tkhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2451 int64_t disp_transform[2];
2452 int display_matrix[3][2];
2454 MOVStreamContext *sc;
2458 if (c->fc->nb_streams < 1)
2460 st = c->fc->streams[c->fc->nb_streams-1];
2463 version = avio_r8(pb);
2464 flags = avio_rb24(pb);
2465 st->disposition |= (flags & MOV_TKHD_FLAG_ENABLED) ? AV_DISPOSITION_DEFAULT : 0;
2471 avio_rb32(pb); /* creation time */
2472 avio_rb32(pb); /* modification time */
2474 st->id = (int)avio_rb32(pb); /* track id (NOT 0 !)*/
2475 avio_rb32(pb); /* reserved */
2477 /* highlevel (considering edits) duration in movie timebase */
2478 (version == 1) ? avio_rb64(pb) : avio_rb32(pb);
2479 avio_rb32(pb); /* reserved */
2480 avio_rb32(pb); /* reserved */
2482 avio_rb16(pb); /* layer */
2483 avio_rb16(pb); /* alternate group */
2484 avio_rb16(pb); /* volume */
2485 avio_rb16(pb); /* reserved */
2487 //read in the display matrix (outlined in ISO 14496-12, Section 6.2.2)
2488 // they're kept in fixed point format through all calculations
2489 // ignore u,v,z b/c we don't need the scale factor to calc aspect ratio
2490 for (i = 0; i < 3; i++) {
2491 display_matrix[i][0] = avio_rb32(pb); // 16.16 fixed point
2492 display_matrix[i][1] = avio_rb32(pb); // 16.16 fixed point
2493 avio_rb32(pb); // 2.30 fixed point (not used)
2496 width = avio_rb32(pb); // 16.16 fixed point track width
2497 height = avio_rb32(pb); // 16.16 fixed point track height
2498 sc->width = width >> 16;
2499 sc->height = height >> 16;
2501 //Assign clockwise rotate values based on transform matrix so that
2502 //we can compensate for iPhone orientation during capture.
2504 if (display_matrix[1][0] == -65536 && display_matrix[0][1] == 65536) {
2505 av_dict_set(&st->metadata, "rotate", "90", 0);
2508 if (display_matrix[0][0] == -65536 && display_matrix[1][1] == -65536) {
2509 av_dict_set(&st->metadata, "rotate", "180", 0);
2512 if (display_matrix[1][0] == 65536 && display_matrix[0][1] == -65536) {
2513 av_dict_set(&st->metadata, "rotate", "270", 0);
2516 // transform the display width/height according to the matrix
2517 // skip this if the display matrix is the default identity matrix
2518 // or if it is rotating the picture, ex iPhone 3GS
2519 // to keep the same scale, use [width height 1<<16]
2520 if (width && height &&
2521 ((display_matrix[0][0] != 65536 ||
2522 display_matrix[1][1] != 65536) &&
2523 !display_matrix[0][1] &&
2524 !display_matrix[1][0] &&
2525 !display_matrix[2][0] && !display_matrix[2][1])) {
2526 for (i = 0; i < 2; i++)
2528 (int64_t) width * display_matrix[0][i] +
2529 (int64_t) height * display_matrix[1][i] +
2530 ((int64_t) display_matrix[2][i] << 16);
2532 //sample aspect ratio is new width/height divided by old width/height
2533 st->sample_aspect_ratio = av_d2q(
2534 ((double) disp_transform[0] * height) /
2535 ((double) disp_transform[1] * width), INT_MAX);
2540 static int mov_read_tfhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2542 MOVFragment *frag = &c->fragment;
2543 MOVTrackExt *trex = NULL;
2544 int flags, track_id, i;
2546 avio_r8(pb); /* version */
2547 flags = avio_rb24(pb);
2549 track_id = avio_rb32(pb);
2551 return AVERROR_INVALIDDATA;
2552 frag->track_id = track_id;
2553 for (i = 0; i < c->trex_count; i++)
2554 if (c->trex_data[i].track_id == frag->track_id) {
2555 trex = &c->trex_data[i];
2559 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding trex\n");
2560 return AVERROR_INVALIDDATA;
2563 frag->base_data_offset = flags & MOV_TFHD_BASE_DATA_OFFSET ?
2564 avio_rb64(pb) : frag->moof_offset;
2565 frag->stsd_id = flags & MOV_TFHD_STSD_ID ? avio_rb32(pb) : trex->stsd_id;
2567 frag->duration = flags & MOV_TFHD_DEFAULT_DURATION ?
2568 avio_rb32(pb) : trex->duration;
2569 frag->size = flags & MOV_TFHD_DEFAULT_SIZE ?
2570 avio_rb32(pb) : trex->size;
2571 frag->flags = flags & MOV_TFHD_DEFAULT_FLAGS ?
2572 avio_rb32(pb) : trex->flags;
2573 av_dlog(c->fc, "frag flags 0x%x\n", frag->flags);
2577 static int mov_read_chap(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2579 c->chapter_track = avio_rb32(pb);
2583 static int mov_read_trex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2588 if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data))
2589 return AVERROR_INVALIDDATA;
2590 if ((err = av_reallocp_array(&c->trex_data, c->trex_count + 1,
2591 sizeof(*c->trex_data))) < 0) {
2596 c->fc->duration = AV_NOPTS_VALUE; // the duration from mvhd is not representing the whole file when fragments are used.
2598 trex = &c->trex_data[c->trex_count++];
2599 avio_r8(pb); /* version */
2600 avio_rb24(pb); /* flags */
2601 trex->track_id = avio_rb32(pb);
2602 trex->stsd_id = avio_rb32(pb);
2603 trex->duration = avio_rb32(pb);
2604 trex->size = avio_rb32(pb);
2605 trex->flags = avio_rb32(pb);
2609 static int mov_read_trun(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2611 MOVFragment *frag = &c->fragment;
2612 AVStream *st = NULL;
2613 MOVStreamContext *sc;
2617 int data_offset = 0;
2618 unsigned entries, first_sample_flags = frag->flags;
2619 int flags, distance, i, found_keyframe = 0, err;
2621 for (i = 0; i < c->fc->nb_streams; i++) {
2622 if (c->fc->streams[i]->id == frag->track_id) {
2623 st = c->fc->streams[i];
2628 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id);
2629 return AVERROR_INVALIDDATA;
2632 if (sc->pseudo_stream_id+1 != frag->stsd_id && sc->pseudo_stream_id != -1)
2634 avio_r8(pb); /* version */
2635 flags = avio_rb24(pb);
2636 entries = avio_rb32(pb);
2637 av_dlog(c->fc, "flags 0x%x entries %d\n", flags, entries);
2639 /* Always assume the presence of composition time offsets.
2640 * Without this assumption, for instance, we cannot deal with a track in fragmented movies that meet the following.
2641 * 1) in the initial movie, there are no samples.
2642 * 2) in the first movie fragment, there is only one sample without composition time offset.
2643 * 3) in the subsequent movie fragments, there are samples with composition time offset. */
2644 if (!sc->ctts_count && sc->sample_count)
2646 /* Complement ctts table if moov atom doesn't have ctts atom. */
2647 ctts_data = av_realloc(NULL, sizeof(*sc->ctts_data));
2649 return AVERROR(ENOMEM);
2650 sc->ctts_data = ctts_data;
2651 sc->ctts_data[sc->ctts_count].count = sc->sample_count;
2652 sc->ctts_data[sc->ctts_count].duration = 0;
2655 if ((uint64_t)entries+sc->ctts_count >= UINT_MAX/sizeof(*sc->ctts_data))
2656 return AVERROR_INVALIDDATA;
2657 if ((err = av_reallocp_array(&sc->ctts_data, entries + sc->ctts_count,
2658 sizeof(*sc->ctts_data))) < 0) {
2662 if (flags & MOV_TRUN_DATA_OFFSET) data_offset = avio_rb32(pb);
2663 if (flags & MOV_TRUN_FIRST_SAMPLE_FLAGS) first_sample_flags = avio_rb32(pb);
2664 dts = sc->track_end - sc->time_offset;
2665 offset = frag->base_data_offset + data_offset;
2667 av_dlog(c->fc, "first sample flags 0x%x\n", first_sample_flags);
2668 for (i = 0; i < entries && !pb->eof_reached; i++) {
2669 unsigned sample_size = frag->size;
2670 int sample_flags = i ? frag->flags : first_sample_flags;
2671 unsigned sample_duration = frag->duration;
2674 if (flags & MOV_TRUN_SAMPLE_DURATION) sample_duration = avio_rb32(pb);
2675 if (flags & MOV_TRUN_SAMPLE_SIZE) sample_size = avio_rb32(pb);
2676 if (flags & MOV_TRUN_SAMPLE_FLAGS) sample_flags = avio_rb32(pb);
2677 sc->ctts_data[sc->ctts_count].count = 1;
2678 sc->ctts_data[sc->ctts_count].duration = (flags & MOV_TRUN_SAMPLE_CTS) ?
2680 mov_update_dts_shift(sc, sc->ctts_data[sc->ctts_count].duration);
2682 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
2684 else if (!found_keyframe)
2685 keyframe = found_keyframe =
2686 !(sample_flags & (MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC |
2687 MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES));
2690 av_add_index_entry(st, offset, dts, sample_size, distance,
2691 keyframe ? AVINDEX_KEYFRAME : 0);
2692 av_dlog(c->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
2693 "size %d, distance %d, keyframe %d\n", st->index, sc->sample_count+i,
2694 offset, dts, sample_size, distance, keyframe);
2696 dts += sample_duration;
2697 offset += sample_size;
2698 sc->data_size += sample_size;
2701 if (pb->eof_reached)
2704 frag->moof_offset = offset;
2705 st->duration = sc->track_end = dts + sc->time_offset;
2709 /* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
2710 /* like the files created with Adobe Premiere 5.0, for samples see */
2711 /* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
2712 static int mov_read_wide(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2717 return 0; /* continue */
2718 if (avio_rb32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
2719 avio_skip(pb, atom.size - 4);
2722 atom.type = avio_rl32(pb);
2724 if (atom.type != MKTAG('m','d','a','t')) {
2725 avio_skip(pb, atom.size);
2728 err = mov_read_mdat(c, pb, atom);
2732 static int mov_read_cmov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2737 uint8_t *moov_data; /* uncompressed data */
2738 long cmov_len, moov_len;
2741 avio_rb32(pb); /* dcom atom */
2742 if (avio_rl32(pb) != MKTAG('d','c','o','m'))
2743 return AVERROR_INVALIDDATA;
2744 if (avio_rl32(pb) != MKTAG('z','l','i','b')) {
2745 av_log(c->fc, AV_LOG_ERROR, "unknown compression for cmov atom !\n");
2746 return AVERROR_INVALIDDATA;
2748 avio_rb32(pb); /* cmvd atom */
2749 if (avio_rl32(pb) != MKTAG('c','m','v','d'))
2750 return AVERROR_INVALIDDATA;
2751 moov_len = avio_rb32(pb); /* uncompressed size */
2752 cmov_len = atom.size - 6 * 4;
2754 cmov_data = av_malloc(cmov_len);
2756 return AVERROR(ENOMEM);
2757 moov_data = av_malloc(moov_len);
2760 return AVERROR(ENOMEM);
2762 avio_read(pb, cmov_data, cmov_len);
2763 if (uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
2764 goto free_and_return;
2765 if (ffio_init_context(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
2766 goto free_and_return;
2767 atom.type = MKTAG('m','o','o','v');
2768 atom.size = moov_len;
2769 ret = mov_read_default(c, &ctx, atom);
2775 av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
2776 return AVERROR(ENOSYS);
2780 /* edit list atom */
2781 static int mov_read_elst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2783 MOVStreamContext *sc;
2784 int i, edit_count, version, edit_start_index = 0;
2785 int unsupported = 0;
2787 if (c->fc->nb_streams < 1 || c->ignore_editlist)
2789 sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
2791 version = avio_r8(pb); /* version */
2792 avio_rb24(pb); /* flags */
2793 edit_count = avio_rb32(pb); /* entries */
2795 if ((uint64_t)edit_count*12+8 > atom.size)
2796 return AVERROR_INVALIDDATA;
2798 av_dlog(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, edit_count);
2799 for (i=0; i<edit_count; i++){
2804 duration = avio_rb64(pb);
2805 time = avio_rb64(pb);
2807 duration = avio_rb32(pb); /* segment duration */
2808 time = (int32_t)avio_rb32(pb); /* media time */
2810 rate = avio_rb32(pb);
2811 if (i == 0 && time == -1) {
2812 sc->empty_duration = duration;
2813 edit_start_index = 1;
2814 } else if (i == edit_start_index && time >= 0)
2815 sc->start_time = time;
2819 av_dlog(c->fc, "duration=%"PRId64" time=%"PRId64" rate=%f\n",
2820 duration, time, rate / 65536.0);
2824 av_log(c->fc, AV_LOG_WARNING, "multiple edit list entries, "
2825 "a/v desync might occur, patch welcome\n");
2830 static int mov_read_tmcd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2832 MOVStreamContext *sc;
2834 if (c->fc->nb_streams < 1)
2835 return AVERROR_INVALIDDATA;
2836 sc = c->fc->streams[c->fc->nb_streams - 1]->priv_data;
2837 sc->timecode_track = avio_rb32(pb);
2841 static int mov_read_uuid(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2845 static const uint8_t uuid_isml_manifest[] = {
2846 0xa5, 0xd4, 0x0b, 0x30, 0xe8, 0x14, 0x11, 0xdd,
2847 0xba, 0x2f, 0x08, 0x00, 0x20, 0x0c, 0x9a, 0x66
2850 if (atom.size < sizeof(uuid) || atom.size == INT64_MAX)
2851 return AVERROR_INVALIDDATA;
2853 ret = avio_read(pb, uuid, sizeof(uuid));
2856 } else if (ret != sizeof(uuid)) {
2857 return AVERROR_INVALIDDATA;
2859 if (!memcmp(uuid, uuid_isml_manifest, sizeof(uuid))) {
2860 uint8_t *buffer, *ptr;
2862 size_t len = atom.size - sizeof(uuid);
2865 return AVERROR_INVALIDDATA;
2867 ret = avio_skip(pb, 4); // zeroes
2870 buffer = av_mallocz(len + 1);
2872 return AVERROR(ENOMEM);
2874 ret = avio_read(pb, buffer, len);
2878 } else if (ret != len) {
2880 return AVERROR_INVALIDDATA;
2884 while ((ptr = av_stristr(ptr, "systemBitrate=\"")) != NULL) {
2885 ptr += sizeof("systemBitrate=\"") - 1;
2886 c->bitrates_count++;
2887 c->bitrates = av_realloc_f(c->bitrates, c->bitrates_count, sizeof(*c->bitrates));
2889 c->bitrates_count = 0;
2891 return AVERROR(ENOMEM);
2894 ret = strtol(ptr, &endptr, 10);
2895 if (ret < 0 || errno || *endptr != '"') {
2896 c->bitrates[c->bitrates_count - 1] = 0;
2898 c->bitrates[c->bitrates_count - 1] = ret;
2907 static const MOVParseTableEntry mov_default_parse_table[] = {
2908 { MKTAG('A','C','L','R'), mov_read_avid },
2909 { MKTAG('A','P','R','G'), mov_read_avid },
2910 { MKTAG('A','A','L','P'), mov_read_avid },
2911 { MKTAG('A','R','E','S'), mov_read_ares },
2912 { MKTAG('a','v','s','s'), mov_read_avss },
2913 { MKTAG('c','h','p','l'), mov_read_chpl },
2914 { MKTAG('c','o','6','4'), mov_read_stco },
2915 { MKTAG('c','t','t','s'), mov_read_ctts }, /* composition time to sample */
2916 { MKTAG('d','i','n','f'), mov_read_default },
2917 { MKTAG('d','r','e','f'), mov_read_dref },
2918 { MKTAG('e','d','t','s'), mov_read_default },
2919 { MKTAG('e','l','s','t'), mov_read_elst },
2920 { MKTAG('e','n','d','a'), mov_read_enda },
2921 { MKTAG('f','i','e','l'), mov_read_fiel },
2922 { MKTAG('f','t','y','p'), mov_read_ftyp },
2923 { MKTAG('g','l','b','l'), mov_read_glbl },
2924 { MKTAG('h','d','l','r'), mov_read_hdlr },
2925 { MKTAG('i','l','s','t'), mov_read_ilst },
2926 { MKTAG('j','p','2','h'), mov_read_jp2h },
2927 { MKTAG('m','d','a','t'), mov_read_mdat },
2928 { MKTAG('m','d','h','d'), mov_read_mdhd },
2929 { MKTAG('m','d','i','a'), mov_read_default },
2930 { MKTAG('m','e','t','a'), mov_read_meta },
2931 { MKTAG('m','i','n','f'), mov_read_default },
2932 { MKTAG('m','o','o','f'), mov_read_moof },
2933 { MKTAG('m','o','o','v'), mov_read_moov },
2934 { MKTAG('m','v','e','x'), mov_read_default },
2935 { MKTAG('m','v','h','d'), mov_read_mvhd },
2936 { MKTAG('S','M','I',' '), mov_read_svq3 },
2937 { MKTAG('a','l','a','c'), mov_read_alac }, /* alac specific atom */
2938 { MKTAG('a','v','c','C'), mov_read_glbl },
2939 { MKTAG('p','a','s','p'), mov_read_pasp },
2940 { MKTAG('s','t','b','l'), mov_read_default },
2941 { MKTAG('s','t','c','o'), mov_read_stco },
2942 { MKTAG('s','t','p','s'), mov_read_stps },
2943 { MKTAG('s','t','r','f'), mov_read_strf },
2944 { MKTAG('s','t','s','c'), mov_read_stsc },
2945 { MKTAG('s','t','s','d'), mov_read_stsd }, /* sample description */
2946 { MKTAG('s','t','s','s'), mov_read_stss }, /* sync sample */
2947 { MKTAG('s','t','s','z'), mov_read_stsz }, /* sample size */
2948 { MKTAG('s','t','t','s'), mov_read_stts },
2949 { MKTAG('s','t','z','2'), mov_read_stsz }, /* compact sample size */
2950 { MKTAG('t','k','h','d'), mov_read_tkhd }, /* track header */
2951 { MKTAG('t','f','h','d'), mov_read_tfhd }, /* track fragment header */
2952 { MKTAG('t','r','a','k'), mov_read_trak },
2953 { MKTAG('t','r','a','f'), mov_read_default },
2954 { MKTAG('t','r','e','f'), mov_read_default },
2955 { MKTAG('t','m','c','d'), mov_read_tmcd },
2956 { MKTAG('c','h','a','p'), mov_read_chap },
2957 { MKTAG('t','r','e','x'), mov_read_trex },
2958 { MKTAG('t','r','u','n'), mov_read_trun },
2959 { MKTAG('u','d','t','a'), mov_read_default },
2960 { MKTAG('w','a','v','e'), mov_read_wave },
2961 { MKTAG('e','s','d','s'), mov_read_esds },
2962 { MKTAG('d','a','c','3'), mov_read_dac3 }, /* AC-3 info */
2963 { MKTAG('d','e','c','3'), mov_read_dec3 }, /* EAC-3 info */
2964 { MKTAG('w','i','d','e'), mov_read_wide }, /* place holder */
2965 { MKTAG('w','f','e','x'), mov_read_wfex },
2966 { MKTAG('c','m','o','v'), mov_read_cmov },
2967 { MKTAG('c','h','a','n'), mov_read_chan }, /* channel layout */
2968 { MKTAG('d','v','c','1'), mov_read_dvc1 },
2969 { MKTAG('s','b','g','p'), mov_read_sbgp },
2970 { MKTAG('h','v','c','C'), mov_read_glbl },
2971 { MKTAG('u','u','i','d'), mov_read_uuid },
2972 { MKTAG('C','i','n', 0x8e), mov_read_targa_y216 },
2976 static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2978 int64_t total_size = 0;
2983 atom.size = INT64_MAX;
2984 while (total_size + 8 <= atom.size && !url_feof(pb)) {
2985 int (*parse)(MOVContext*, AVIOContext*, MOVAtom) = NULL;
2988 if (atom.size >= 8) {
2989 a.size = avio_rb32(pb);
2990 a.type = avio_rl32(pb);
2991 if (atom.type != MKTAG('r','o','o','t') &&
2992 atom.type != MKTAG('m','o','o','v'))
2994 if (a.type == MKTAG('t','r','a','k') || a.type == MKTAG('m','d','a','t'))
2996 av_log(c->fc, AV_LOG_ERROR, "Broken file, trak/mdat not at top-level\n");
3002 if (a.size == 1) { /* 64 bit extended size */
3003 a.size = avio_rb64(pb) - 8;
3007 av_dlog(c->fc, "type: %08x '%.4s' parent:'%.4s' sz: %"PRId64" %"PRId64" %"PRId64"\n",
3008 a.type, (char*)&a.type, (char*)&atom.type, a.size, total_size, atom.size);
3010 a.size = atom.size - total_size + 8;
3015 a.size = FFMIN(a.size, atom.size - total_size);
3017 for (i = 0; mov_default_parse_table[i].type; i++)
3018 if (mov_default_parse_table[i].type == a.type) {
3019 parse = mov_default_parse_table[i].parse;
3023 // container is user data
3024 if (!parse && (atom.type == MKTAG('u','d','t','a') ||
3025 atom.type == MKTAG('i','l','s','t')))
3026 parse = mov_read_udta_string;
3028 if (!parse) { /* skip leaf atoms data */
3029 avio_skip(pb, a.size);
3031 int64_t start_pos = avio_tell(pb);
3033 int err = parse(c, pb, a);
3036 if (c->found_moov && c->found_mdat &&
3037 ((!pb->seekable || c->fc->flags & AVFMT_FLAG_IGNIDX) ||
3038 start_pos + a.size == avio_size(pb))) {
3039 if (!pb->seekable || c->fc->flags & AVFMT_FLAG_IGNIDX)
3040 c->next_root_atom = start_pos + a.size;
3043 left = a.size - avio_tell(pb) + start_pos;
3044 if (left > 0) /* skip garbage at atom end */
3045 avio_skip(pb, left);
3046 else if (left < 0) {
3047 av_log(c->fc, AV_LOG_WARNING,
3048 "overread end of atom '%.4s' by %"PRId64" bytes\n",
3049 (char*)&a.type, -left);
3050 avio_seek(pb, left, SEEK_CUR);
3054 total_size += a.size;
3057 if (total_size < atom.size && atom.size < 0x7ffff)
3058 avio_skip(pb, atom.size - total_size);
3063 static int mov_probe(AVProbeData *p)
3068 int moov_offset = -1;
3070 /* check file header */
3073 /* ignore invalid offset */
3074 if ((offset + 8) > (unsigned int)p->buf_size)
3076 tag = AV_RL32(p->buf + offset + 4);
3078 /* check for obvious tags */
3079 case MKTAG('m','o','o','v'):
3080 moov_offset = offset + 4;
3081 case MKTAG('j','P',' ',' '): /* jpeg 2000 signature */
3082 case MKTAG('m','d','a','t'):
3083 case MKTAG('p','n','o','t'): /* detect movs with preview pics like ew.mov and april.mov */
3084 case MKTAG('u','d','t','a'): /* Packet Video PVAuthor adds this and a lot of more junk */
3085 case MKTAG('f','t','y','p'):
3086 if (AV_RB32(p->buf+offset) < 8 &&
3087 (AV_RB32(p->buf+offset) != 1 ||
3088 offset + 12 > (unsigned int)p->buf_size ||
3089 AV_RB64(p->buf+offset + 8) == 0)) {
3090 score = FFMAX(score, AVPROBE_SCORE_EXTENSION);
3092 score = AVPROBE_SCORE_MAX;
3094 offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset;
3096 /* those are more common words, so rate then a bit less */
3097 case MKTAG('e','d','i','w'): /* xdcam files have reverted first tags */
3098 case MKTAG('w','i','d','e'):
3099 case MKTAG('f','r','e','e'):
3100 case MKTAG('j','u','n','k'):
3101 case MKTAG('p','i','c','t'):
3102 score = FFMAX(score, AVPROBE_SCORE_MAX - 5);
3103 offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset;
3105 case MKTAG(0x82,0x82,0x7f,0x7d):
3106 case MKTAG('s','k','i','p'):
3107 case MKTAG('u','u','i','d'):
3108 case MKTAG('p','r','f','l'):
3109 /* if we only find those cause probedata is too small at least rate them */
3110 score = FFMAX(score, AVPROBE_SCORE_EXTENSION);
3111 offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset;
3114 offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset;
3117 if(score > AVPROBE_SCORE_MAX - 50 && moov_offset != -1) {
3118 /* moov atom in the header - we should make sure that this is not a
3119 * MOV-packed MPEG-PS */
3120 offset = moov_offset;
3122 while(offset < (p->buf_size - 16)){ /* Sufficient space */
3123 /* We found an actual hdlr atom */
3124 if(AV_RL32(p->buf + offset ) == MKTAG('h','d','l','r') &&
3125 AV_RL32(p->buf + offset + 8) == MKTAG('m','h','l','r') &&
3126 AV_RL32(p->buf + offset + 12) == MKTAG('M','P','E','G')){
3127 av_log(NULL, AV_LOG_WARNING, "Found media data tag MPEG indicating this is a MOV-packed MPEG-PS.\n");
3128 /* We found a media handler reference atom describing an
3129 * MPEG-PS-in-MOV, return a
3130 * low score to force expanding the probe window until
3131 * mpegps_probe finds what it needs */
3142 // must be done after parsing all trak because there's no order requirement
3143 static void mov_read_chapters(AVFormatContext *s)
3145 MOVContext *mov = s->priv_data;
3146 AVStream *st = NULL;
3147 MOVStreamContext *sc;
3151 for (i = 0; i < s->nb_streams; i++)
3152 if (s->streams[i]->id == mov->chapter_track) {
3157 av_log(s, AV_LOG_ERROR, "Referenced QT chapter track not found\n");
3161 st->discard = AVDISCARD_ALL;
3163 cur_pos = avio_tell(sc->pb);
3165 for (i = 0; i < st->nb_index_entries; i++) {
3166 AVIndexEntry *sample = &st->index_entries[i];
3167 int64_t end = i+1 < st->nb_index_entries ? st->index_entries[i+1].timestamp : st->duration;
3172 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
3173 av_log(s, AV_LOG_ERROR, "Chapter %d not found in file\n", i);
3177 // the first two bytes are the length of the title
3178 len = avio_rb16(sc->pb);
3179 if (len > sample->size-2)
3181 title_len = 2*len + 1;
3182 if (!(title = av_mallocz(title_len)))
3185 // The samples could theoretically be in any encoding if there's an encd
3186 // atom following, but in practice are only utf-8 or utf-16, distinguished
3187 // instead by the presence of a BOM
3191 ch = avio_rb16(sc->pb);
3193 avio_get_str16be(sc->pb, len, title, title_len);
3194 else if (ch == 0xfffe)
3195 avio_get_str16le(sc->pb, len, title, title_len);
3198 if (len == 1 || len == 2)
3201 avio_get_str(sc->pb, INT_MAX, title + 2, len - 1);
3205 avpriv_new_chapter(s, i, st->time_base, sample->timestamp, end, title);
3209 avio_seek(sc->pb, cur_pos, SEEK_SET);
3212 static int parse_timecode_in_framenum_format(AVFormatContext *s, AVStream *st,
3213 uint32_t value, int flags)
3216 char buf[AV_TIMECODE_STR_SIZE];
3217 AVRational rate = {st->codec->time_base.den,
3218 st->codec->time_base.num};
3219 int ret = av_timecode_init(&tc, rate, flags, 0, s);
3222 av_dict_set(&st->metadata, "timecode",
3223 av_timecode_make_string(&tc, buf, value), 0);
3227 static int mov_read_timecode_track(AVFormatContext *s, AVStream *st)
3229 MOVStreamContext *sc = st->priv_data;
3231 int64_t cur_pos = avio_tell(sc->pb);
3234 if (!st->nb_index_entries)
3237 avio_seek(sc->pb, st->index_entries->pos, SEEK_SET);
3238 value = avio_rb32(s->pb);
3240 if (sc->tmcd_flags & 0x0001) flags |= AV_TIMECODE_FLAG_DROPFRAME;
3241 if (sc->tmcd_flags & 0x0002) flags |= AV_TIMECODE_FLAG_24HOURSMAX;
3242 if (sc->tmcd_flags & 0x0004) flags |= AV_TIMECODE_FLAG_ALLOWNEGATIVE;
3244 /* Assume Counter flag is set to 1 in tmcd track (even though it is likely
3245 * not the case) and thus assume "frame number format" instead of QT one.
3246 * No sample with tmcd track can be found with a QT timecode at the moment,
3247 * despite what the tmcd track "suggests" (Counter flag set to 0 means QT
3249 parse_timecode_in_framenum_format(s, st, value, flags);
3251 avio_seek(sc->pb, cur_pos, SEEK_SET);
3255 static int mov_read_close(AVFormatContext *s)
3257 MOVContext *mov = s->priv_data;
3260 for (i = 0; i < s->nb_streams; i++) {
3261 AVStream *st = s->streams[i];
3262 MOVStreamContext *sc = st->priv_data;
3264 av_freep(&sc->ctts_data);
3265 for (j = 0; j < sc->drefs_count; j++) {
3266 av_freep(&sc->drefs[j].path);
3267 av_freep(&sc->drefs[j].dir);
3269 av_freep(&sc->drefs);
3270 if (!sc->pb_is_copied)
3273 av_freep(&sc->chunk_offsets);
3274 av_freep(&sc->keyframes);
3275 av_freep(&sc->sample_sizes);
3276 av_freep(&sc->stps_data);
3277 av_freep(&sc->stsc_data);
3278 av_freep(&sc->stts_data);
3281 if (mov->dv_demux) {
3282 for (i = 0; i < mov->dv_fctx->nb_streams; i++) {
3283 av_freep(&mov->dv_fctx->streams[i]->codec);
3284 av_freep(&mov->dv_fctx->streams[i]);
3286 av_freep(&mov->dv_fctx);
3287 av_freep(&mov->dv_demux);
3290 av_freep(&mov->trex_data);
3291 av_freep(&mov->bitrates);
3296 static int tmcd_is_referenced(AVFormatContext *s, int tmcd_id)
3300 for (i = 0; i < s->nb_streams; i++) {
3301 AVStream *st = s->streams[i];
3302 MOVStreamContext *sc = st->priv_data;
3304 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
3305 sc->timecode_track == tmcd_id)
3311 /* look for a tmcd track not referenced by any video track, and export it globally */
3312 static void export_orphan_timecode(AVFormatContext *s)
3316 for (i = 0; i < s->nb_streams; i++) {
3317 AVStream *st = s->streams[i];
3319 if (st->codec->codec_tag == MKTAG('t','m','c','d') &&
3320 !tmcd_is_referenced(s, i + 1)) {
3321 AVDictionaryEntry *tcr = av_dict_get(st->metadata, "timecode", NULL, 0);
3323 av_dict_set(&s->metadata, "timecode", tcr->value, 0);
3330 static int mov_read_header(AVFormatContext *s)
3332 MOVContext *mov = s->priv_data;
3333 AVIOContext *pb = s->pb;
3335 MOVAtom atom = { AV_RL32("root") };
3338 /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
3340 atom.size = avio_size(pb);
3342 atom.size = INT64_MAX;
3344 /* check MOV header */
3345 if ((err = mov_read_default(mov, pb, atom)) < 0) {
3346 av_log(s, AV_LOG_ERROR, "error reading header: %d\n", err);
3350 if (!mov->found_moov) {
3351 av_log(s, AV_LOG_ERROR, "moov atom not found\n");
3353 return AVERROR_INVALIDDATA;
3355 av_dlog(mov->fc, "on_parse_exit_offset=%"PRId64"\n", avio_tell(pb));
3358 if (mov->chapter_track > 0)
3359 mov_read_chapters(s);
3360 for (i = 0; i < s->nb_streams; i++)
3361 if (s->streams[i]->codec->codec_tag == AV_RL32("tmcd"))
3362 mov_read_timecode_track(s, s->streams[i]);
3365 /* copy timecode metadata from tmcd tracks to the related video streams */
3366 for (i = 0; i < s->nb_streams; i++) {
3367 AVStream *st = s->streams[i];
3368 MOVStreamContext *sc = st->priv_data;
3369 if (sc->timecode_track > 0) {
3370 AVDictionaryEntry *tcr;
3371 int tmcd_st_id = -1;
3373 for (j = 0; j < s->nb_streams; j++)
3374 if (s->streams[j]->id == sc->timecode_track)
3377 if (tmcd_st_id < 0 || tmcd_st_id == i)
3379 tcr = av_dict_get(s->streams[tmcd_st_id]->metadata, "timecode", NULL, 0);
3381 av_dict_set(&st->metadata, "timecode", tcr->value, 0);
3384 export_orphan_timecode(s);
3386 for (i = 0; i < s->nb_streams; i++) {
3387 AVStream *st = s->streams[i];
3388 MOVStreamContext *sc = st->priv_data;
3389 fix_timescale(mov, sc);
3390 if(st->codec->codec_type == AVMEDIA_TYPE_AUDIO && st->codec->codec_id == AV_CODEC_ID_AAC) {
3391 st->skip_samples = sc->start_pad;
3395 if (mov->trex_data) {
3396 for (i = 0; i < s->nb_streams; i++) {
3397 AVStream *st = s->streams[i];
3398 MOVStreamContext *sc = st->priv_data;
3399 if (st->duration > 0)
3400 st->codec->bit_rate = sc->data_size * 8 * sc->time_scale / st->duration;
3404 for (i = 0; i < mov->bitrates_count && i < s->nb_streams; i++) {
3405 if (mov->bitrates[i]) {
3406 s->streams[i]->codec->bit_rate = mov->bitrates[i];
3413 static AVIndexEntry *mov_find_next_sample(AVFormatContext *s, AVStream **st)
3415 AVIndexEntry *sample = NULL;
3416 int64_t best_dts = INT64_MAX;
3418 for (i = 0; i < s->nb_streams; i++) {
3419 AVStream *avst = s->streams[i];
3420 MOVStreamContext *msc = avst->priv_data;
3421 if (msc->pb && msc->current_sample < avst->nb_index_entries) {
3422 AVIndexEntry *current_sample = &avst->index_entries[msc->current_sample];
3423 int64_t dts = av_rescale(current_sample->timestamp, AV_TIME_BASE, msc->time_scale);
3424 av_dlog(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
3425 if (!sample || (!s->pb->seekable && current_sample->pos < sample->pos) ||
3427 ((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb &&
3428 ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
3429 (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) {
3430 sample = current_sample;
3439 static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
3441 MOVContext *mov = s->priv_data;
3442 MOVStreamContext *sc;
3443 AVIndexEntry *sample;
3444 AVStream *st = NULL;
3448 sample = mov_find_next_sample(s, &st);
3450 mov->found_mdat = 0;
3451 if (!mov->next_root_atom)
3453 avio_seek(s->pb, mov->next_root_atom, SEEK_SET);
3454 mov->next_root_atom = 0;
3455 if (mov_read_default(mov, s->pb, (MOVAtom){ AV_RL32("root"), INT64_MAX }) < 0 ||
3458 av_dlog(s, "read fragments, offset 0x%"PRIx64"\n", avio_tell(s->pb));
3462 /* must be done just before reading, to avoid infinite loop on sample */
3463 sc->current_sample++;
3465 if (mov->next_root_atom) {
3466 sample->pos = FFMIN(sample->pos, mov->next_root_atom);
3467 sample->size = FFMIN(sample->size, (mov->next_root_atom - sample->pos));
3470 if (st->discard != AVDISCARD_ALL) {
3471 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
3472 av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
3473 sc->ffindex, sample->pos);
3474 return AVERROR_INVALIDDATA;
3476 ret = av_get_packet(sc->pb, pkt, sample->size);
3479 if (sc->has_palette) {
3482 pal = av_packet_new_side_data(pkt, AV_PKT_DATA_PALETTE, AVPALETTE_SIZE);
3484 av_log(mov->fc, AV_LOG_ERROR, "Cannot append palette to packet\n");
3486 memcpy(pal, sc->palette, AVPALETTE_SIZE);
3487 sc->has_palette = 0;
3490 #if CONFIG_DV_DEMUXER
3491 if (mov->dv_demux && sc->dv_audio_container) {
3492 avpriv_dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size, pkt->pos);
3495 ret = avpriv_dv_get_packet(mov->dv_demux, pkt);
3502 pkt->stream_index = sc->ffindex;
3503 pkt->dts = sample->timestamp;
3504 if (sc->ctts_data && sc->ctts_index < sc->ctts_count) {
3505 pkt->pts = pkt->dts + sc->dts_shift + sc->ctts_data[sc->ctts_index].duration;
3506 /* update ctts context */
3508 if (sc->ctts_index < sc->ctts_count &&
3509 sc->ctts_data[sc->ctts_index].count == sc->ctts_sample) {
3511 sc->ctts_sample = 0;
3514 pkt->dts = AV_NOPTS_VALUE;
3516 int64_t next_dts = (sc->current_sample < st->nb_index_entries) ?
3517 st->index_entries[sc->current_sample].timestamp : st->duration;
3518 pkt->duration = next_dts - pkt->dts;
3519 pkt->pts = pkt->dts;
3521 if (st->discard == AVDISCARD_ALL)
3523 pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? AV_PKT_FLAG_KEY : 0;
3524 pkt->pos = sample->pos;
3525 av_dlog(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n",
3526 pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
3530 static int mov_seek_stream(AVFormatContext *s, AVStream *st, int64_t timestamp, int flags)
3532 MOVStreamContext *sc = st->priv_data;
3533 int sample, time_sample;
3536 sample = av_index_search_timestamp(st, timestamp, flags);
3537 av_dlog(s, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
3538 if (sample < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
3540 if (sample < 0) /* not sure what to do */
3541 return AVERROR_INVALIDDATA;
3542 sc->current_sample = sample;
3543 av_dlog(s, "stream %d, found sample %d\n", st->index, sc->current_sample);
3544 /* adjust ctts index */
3545 if (sc->ctts_data) {
3547 for (i = 0; i < sc->ctts_count; i++) {
3548 int next = time_sample + sc->ctts_data[i].count;
3549 if (next > sc->current_sample) {
3551 sc->ctts_sample = sc->current_sample - time_sample;
3560 static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
3563 int64_t seek_timestamp, timestamp;
3567 if (stream_index >= s->nb_streams)
3568 return AVERROR_INVALIDDATA;
3570 st = s->streams[stream_index];
3571 sample = mov_seek_stream(s, st, sample_time, flags);
3575 /* adjust seek timestamp to found sample timestamp */
3576 seek_timestamp = st->index_entries[sample].timestamp;
3578 for (i = 0; i < s->nb_streams; i++) {
3579 MOVStreamContext *sc = s->streams[i]->priv_data;
3581 st->skip_samples = (sample_time <= 0) ? sc->start_pad : 0;
3583 if (stream_index == i)
3586 timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
3587 mov_seek_stream(s, st, timestamp, flags);
3592 static const AVOption options[] = {
3593 {"use_absolute_path",
3594 "allow using absolute path when opening alias, this is a possible security issue",
3595 offsetof(MOVContext, use_absolute_path), FF_OPT_TYPE_INT, {.i64 = 0},
3596 0, 1, AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_DECODING_PARAM},
3597 {"ignore_editlist", "", offsetof(MOVContext, ignore_editlist), FF_OPT_TYPE_INT, {.i64 = 0},
3598 0, 1, AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_DECODING_PARAM},
3602 static const AVClass mov_class = {
3603 .class_name = "mov,mp4,m4a,3gp,3g2,mj2",
3604 .item_name = av_default_item_name,
3606 .version = LIBAVUTIL_VERSION_INT,
3609 AVInputFormat ff_mov_demuxer = {
3610 .name = "mov,mp4,m4a,3gp,3g2,mj2",
3611 .long_name = NULL_IF_CONFIG_SMALL("QuickTime / MOV"),
3612 .priv_data_size = sizeof(MOVContext),
3613 .read_probe = mov_probe,
3614 .read_header = mov_read_header,
3615 .read_packet = mov_read_packet,
3616 .read_close = mov_read_close,
3617 .read_seek = mov_read_seek,
3618 .priv_class = &mov_class,
3619 .flags = AVFMT_NO_BYTE_SEEK,