3 * Copyright (c) 2001 Fabrice Bellard
4 * Copyright (c) 2009 Baptiste Coudurier <baptiste dot coudurier at gmail dot com>
6 * This file is part of Libav.
8 * Libav is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * Libav is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with Libav; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
26 //#define MOV_EXPORT_ALL_METADATA
28 #include "libavutil/attributes.h"
29 #include "libavutil/audioconvert.h"
30 #include "libavutil/intreadwrite.h"
31 #include "libavutil/intfloat.h"
32 #include "libavutil/mathematics.h"
33 #include "libavutil/avstring.h"
34 #include "libavutil/dict.h"
35 #include "libavcodec/ac3tab.h"
38 #include "avio_internal.h"
41 #include "libavcodec/get_bits.h"
50 * First version by Francois Revol revol@free.fr
51 * Seek function by Gael Chardon gael.dev@4now.net
54 #include "qtpalette.h"
60 /* those functions parse an atom */
61 /* links atom IDs to parse functions */
62 typedef struct MOVParseTableEntry {
64 int (*parse)(MOVContext *ctx, AVIOContext *pb, MOVAtom atom);
67 static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom);
69 static int mov_metadata_track_or_disc_number(MOVContext *c, AVIOContext *pb,
70 unsigned len, const char *key)
74 short current, total = 0;
75 avio_rb16(pb); // unknown
76 current = avio_rb16(pb);
78 total = avio_rb16(pb);
80 snprintf(buf, sizeof(buf), "%d", current);
82 snprintf(buf, sizeof(buf), "%d/%d", current, total);
83 av_dict_set(&c->fc->metadata, key, buf, 0);
88 static int mov_metadata_int8_bypass_padding(MOVContext *c, AVIOContext *pb,
89 unsigned len, const char *key)
93 /* bypass padding bytes */
98 snprintf(buf, sizeof(buf), "%d", avio_r8(pb));
99 av_dict_set(&c->fc->metadata, key, buf, 0);
104 static int mov_metadata_int8_no_padding(MOVContext *c, AVIOContext *pb,
105 unsigned len, const char *key)
109 snprintf(buf, sizeof(buf), "%d", avio_r8(pb));
110 av_dict_set(&c->fc->metadata, key, buf, 0);
115 static int mov_metadata_gnre(MOVContext *c, AVIOContext *pb,
116 unsigned len, const char *key)
121 avio_r8(pb); // unknown
124 if (genre < 1 || genre > ID3v1_GENRE_MAX)
126 snprintf(buf, sizeof(buf), "%s", ff_id3v1_genre_str[genre-1]);
127 av_dict_set(&c->fc->metadata, key, buf, 0);
132 static const uint32_t mac_to_unicode[128] = {
133 0x00C4,0x00C5,0x00C7,0x00C9,0x00D1,0x00D6,0x00DC,0x00E1,
134 0x00E0,0x00E2,0x00E4,0x00E3,0x00E5,0x00E7,0x00E9,0x00E8,
135 0x00EA,0x00EB,0x00ED,0x00EC,0x00EE,0x00EF,0x00F1,0x00F3,
136 0x00F2,0x00F4,0x00F6,0x00F5,0x00FA,0x00F9,0x00FB,0x00FC,
137 0x2020,0x00B0,0x00A2,0x00A3,0x00A7,0x2022,0x00B6,0x00DF,
138 0x00AE,0x00A9,0x2122,0x00B4,0x00A8,0x2260,0x00C6,0x00D8,
139 0x221E,0x00B1,0x2264,0x2265,0x00A5,0x00B5,0x2202,0x2211,
140 0x220F,0x03C0,0x222B,0x00AA,0x00BA,0x03A9,0x00E6,0x00F8,
141 0x00BF,0x00A1,0x00AC,0x221A,0x0192,0x2248,0x2206,0x00AB,
142 0x00BB,0x2026,0x00A0,0x00C0,0x00C3,0x00D5,0x0152,0x0153,
143 0x2013,0x2014,0x201C,0x201D,0x2018,0x2019,0x00F7,0x25CA,
144 0x00FF,0x0178,0x2044,0x20AC,0x2039,0x203A,0xFB01,0xFB02,
145 0x2021,0x00B7,0x201A,0x201E,0x2030,0x00C2,0x00CA,0x00C1,
146 0x00CB,0x00C8,0x00CD,0x00CE,0x00CF,0x00CC,0x00D3,0x00D4,
147 0xF8FF,0x00D2,0x00DA,0x00DB,0x00D9,0x0131,0x02C6,0x02DC,
148 0x00AF,0x02D8,0x02D9,0x02DA,0x00B8,0x02DD,0x02DB,0x02C7,
151 static int mov_read_mac_string(MOVContext *c, AVIOContext *pb, int len,
152 char *dst, int dstlen)
155 char *end = dst+dstlen-1;
158 for (i = 0; i < len; i++) {
159 uint8_t t, c = avio_r8(pb);
160 if (c < 0x80 && p < end)
163 PUT_UTF8(mac_to_unicode[c-0x80], t, if (p < end) *p++ = t;);
169 static int mov_read_covr(MOVContext *c, AVIOContext *pb, int type, int len)
173 MOVStreamContext *sc;
178 case 0xd: id = CODEC_ID_MJPEG; break;
179 case 0xe: id = CODEC_ID_PNG; break;
180 case 0x1b: id = CODEC_ID_BMP; break;
182 av_log(c->fc, AV_LOG_WARNING, "Unknown cover type: 0x%x.\n", type);
187 st = avformat_new_stream(c->fc, NULL);
189 return AVERROR(ENOMEM);
190 sc = av_mallocz(sizeof(*sc));
192 return AVERROR(ENOMEM);
195 ret = av_get_packet(pb, &pkt, len);
199 st->disposition |= AV_DISPOSITION_ATTACHED_PIC;
201 st->attached_pic = pkt;
202 st->attached_pic.stream_index = st->index;
203 st->attached_pic.flags |= AV_PKT_FLAG_KEY;
205 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
206 st->codec->codec_id = id;
211 static int mov_read_udta_string(MOVContext *c, AVIOContext *pb, MOVAtom atom)
213 #ifdef MOV_EXPORT_ALL_METADATA
216 char str[1024], key2[16], language[4] = {0};
217 const char *key = NULL;
218 uint16_t langcode = 0;
219 uint32_t data_type = 0, str_size;
220 int (*parse)(MOVContext*, AVIOContext*, unsigned, const char*) = NULL;
223 case MKTAG(0xa9,'n','a','m'): key = "title"; break;
224 case MKTAG(0xa9,'a','u','t'):
225 case MKTAG(0xa9,'A','R','T'): key = "artist"; break;
226 case MKTAG( 'a','A','R','T'): key = "album_artist"; break;
227 case MKTAG(0xa9,'w','r','t'): key = "composer"; break;
228 case MKTAG( 'c','p','r','t'):
229 case MKTAG(0xa9,'c','p','y'): key = "copyright"; break;
230 case MKTAG(0xa9,'c','m','t'):
231 case MKTAG(0xa9,'i','n','f'): key = "comment"; break;
232 case MKTAG(0xa9,'a','l','b'): key = "album"; break;
233 case MKTAG(0xa9,'d','a','y'): key = "date"; break;
234 case MKTAG(0xa9,'g','e','n'): key = "genre"; break;
235 case MKTAG( 'g','n','r','e'): key = "genre";
236 parse = mov_metadata_gnre; break;
237 case MKTAG(0xa9,'t','o','o'):
238 case MKTAG(0xa9,'s','w','r'): key = "encoder"; break;
239 case MKTAG(0xa9,'e','n','c'): key = "encoder"; break;
240 case MKTAG( 'd','e','s','c'): key = "description";break;
241 case MKTAG( 'l','d','e','s'): key = "synopsis"; break;
242 case MKTAG( 't','v','s','h'): key = "show"; break;
243 case MKTAG( 't','v','e','n'): key = "episode_id";break;
244 case MKTAG( 't','v','n','n'): key = "network"; break;
245 case MKTAG( 't','r','k','n'): key = "track";
246 parse = mov_metadata_track_or_disc_number; break;
247 case MKTAG( 'd','i','s','k'): key = "disc";
248 parse = mov_metadata_track_or_disc_number; break;
249 case MKTAG( 't','v','e','s'): key = "episode_sort";
250 parse = mov_metadata_int8_bypass_padding; break;
251 case MKTAG( 't','v','s','n'): key = "season_number";
252 parse = mov_metadata_int8_bypass_padding; break;
253 case MKTAG( 's','t','i','k'): key = "media_type";
254 parse = mov_metadata_int8_no_padding; break;
255 case MKTAG( 'h','d','v','d'): key = "hd_video";
256 parse = mov_metadata_int8_no_padding; break;
257 case MKTAG( 'p','g','a','p'): key = "gapless_playback";
258 parse = mov_metadata_int8_no_padding; break;
261 if (c->itunes_metadata && atom.size > 8) {
262 int data_size = avio_rb32(pb);
263 int tag = avio_rl32(pb);
264 if (tag == MKTAG('d','a','t','a')) {
265 data_type = avio_rb32(pb); // type
266 avio_rb32(pb); // unknown
267 str_size = data_size - 16;
270 if (atom.type == MKTAG('c', 'o', 'v', 'r')) {
271 int ret = mov_read_covr(c, pb, data_type, str_size);
273 av_log(c->fc, AV_LOG_ERROR, "Error parsing cover art.\n");
278 } else if (atom.size > 4 && key && !c->itunes_metadata) {
279 str_size = avio_rb16(pb); // string length
280 langcode = avio_rb16(pb);
281 ff_mov_lang_to_iso639(langcode, language);
284 str_size = atom.size;
286 #ifdef MOV_EXPORT_ALL_METADATA
288 snprintf(tmp_key, 5, "%.4s", (char*)&atom.type);
296 return AVERROR_INVALIDDATA;
298 str_size = FFMIN3(sizeof(str)-1, str_size, atom.size);
301 parse(c, pb, str_size, key);
303 if (data_type == 3 || (data_type == 0 && langcode < 0x800)) { // MAC Encoded
304 mov_read_mac_string(c, pb, str_size, str, sizeof(str));
306 avio_read(pb, str, str_size);
309 av_dict_set(&c->fc->metadata, key, str, 0);
310 if (*language && strcmp(language, "und")) {
311 snprintf(key2, sizeof(key2), "%s-%s", key, language);
312 av_dict_set(&c->fc->metadata, key2, str, 0);
315 av_dlog(c->fc, "lang \"%3s\" ", language);
316 av_dlog(c->fc, "tag \"%s\" value \"%s\" atom \"%.4s\" %d %"PRId64"\n",
317 key, str, (char*)&atom.type, str_size, atom.size);
322 static int mov_read_chpl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
325 int i, nb_chapters, str_len, version;
328 if ((atom.size -= 5) < 0)
331 version = avio_r8(pb);
334 avio_rb32(pb); // ???
335 nb_chapters = avio_r8(pb);
337 for (i = 0; i < nb_chapters; i++) {
341 start = avio_rb64(pb);
342 str_len = avio_r8(pb);
344 if ((atom.size -= 9+str_len) < 0)
347 avio_read(pb, str, str_len);
349 avpriv_new_chapter(c->fc, i, (AVRational){1,10000000}, start, AV_NOPTS_VALUE, str);
354 static int mov_read_dref(MOVContext *c, AVIOContext *pb, MOVAtom atom)
357 MOVStreamContext *sc;
360 if (c->fc->nb_streams < 1)
362 st = c->fc->streams[c->fc->nb_streams-1];
365 avio_rb32(pb); // version + flags
366 entries = avio_rb32(pb);
367 if (entries >= UINT_MAX / sizeof(*sc->drefs))
368 return AVERROR_INVALIDDATA;
370 sc->drefs = av_mallocz(entries * sizeof(*sc->drefs));
372 return AVERROR(ENOMEM);
373 sc->drefs_count = entries;
375 for (i = 0; i < sc->drefs_count; i++) {
376 MOVDref *dref = &sc->drefs[i];
377 uint32_t size = avio_rb32(pb);
378 int64_t next = avio_tell(pb) + size - 4;
381 return AVERROR_INVALIDDATA;
383 dref->type = avio_rl32(pb);
384 avio_rb32(pb); // version + flags
385 av_dlog(c->fc, "type %.4s size %d\n", (char*)&dref->type, size);
387 if (dref->type == MKTAG('a','l','i','s') && size > 150) {
388 /* macintosh alias record */
389 uint16_t volume_len, len;
394 volume_len = avio_r8(pb);
395 volume_len = FFMIN(volume_len, 27);
396 avio_read(pb, dref->volume, 27);
397 dref->volume[volume_len] = 0;
398 av_log(c->fc, AV_LOG_DEBUG, "volume %s, len %d\n", dref->volume, volume_len);
403 len = FFMIN(len, 63);
404 avio_read(pb, dref->filename, 63);
405 dref->filename[len] = 0;
406 av_log(c->fc, AV_LOG_DEBUG, "filename %s, len %d\n", dref->filename, len);
410 /* read next level up_from_alias/down_to_target */
411 dref->nlvl_from = avio_rb16(pb);
412 dref->nlvl_to = avio_rb16(pb);
413 av_log(c->fc, AV_LOG_DEBUG, "nlvl from %d, nlvl to %d\n",
414 dref->nlvl_from, dref->nlvl_to);
418 for (type = 0; type != -1 && avio_tell(pb) < next; ) {
419 type = avio_rb16(pb);
421 av_log(c->fc, AV_LOG_DEBUG, "type %d, len %d\n", type, len);
424 if (type == 2) { // absolute path
426 dref->path = av_mallocz(len+1);
428 return AVERROR(ENOMEM);
429 avio_read(pb, dref->path, len);
430 if (len > volume_len && !strncmp(dref->path, dref->volume, volume_len)) {
432 memmove(dref->path, dref->path+volume_len, len);
435 for (j = 0; j < len; j++)
436 if (dref->path[j] == ':')
438 av_log(c->fc, AV_LOG_DEBUG, "path %s\n", dref->path);
439 } else if (type == 0) { // directory name
441 dref->dir = av_malloc(len+1);
443 return AVERROR(ENOMEM);
444 avio_read(pb, dref->dir, len);
446 for (j = 0; j < len; j++)
447 if (dref->dir[j] == ':')
449 av_log(c->fc, AV_LOG_DEBUG, "dir %s\n", dref->dir);
454 avio_seek(pb, next, SEEK_SET);
459 static int mov_read_hdlr(MOVContext *c, AVIOContext *pb, MOVAtom atom)
463 uint32_t av_unused ctype;
465 if (c->fc->nb_streams < 1) // meta before first trak
468 st = c->fc->streams[c->fc->nb_streams-1];
470 avio_r8(pb); /* version */
471 avio_rb24(pb); /* flags */
474 ctype = avio_rl32(pb);
475 type = avio_rl32(pb); /* component subtype */
477 av_dlog(c->fc, "ctype= %.4s (0x%08x)\n", (char*)&ctype, ctype);
478 av_dlog(c->fc, "stype= %.4s\n", (char*)&type);
480 if (type == MKTAG('v','i','d','e'))
481 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
482 else if (type == MKTAG('s','o','u','n'))
483 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
484 else if (type == MKTAG('m','1','a',' '))
485 st->codec->codec_id = CODEC_ID_MP2;
486 else if ((type == MKTAG('s','u','b','p')) || (type == MKTAG('c','l','c','p')))
487 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
489 avio_rb32(pb); /* component manufacture */
490 avio_rb32(pb); /* component flags */
491 avio_rb32(pb); /* component flags mask */
496 int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb, MOVAtom atom)
501 if (fc->nb_streams < 1)
503 st = fc->streams[fc->nb_streams-1];
505 avio_rb32(pb); /* version + flags */
506 ff_mp4_read_descr(fc, pb, &tag);
507 if (tag == MP4ESDescrTag) {
508 ff_mp4_parse_es_descr(pb, NULL);
510 avio_rb16(pb); /* ID */
512 ff_mp4_read_descr(fc, pb, &tag);
513 if (tag == MP4DecConfigDescrTag)
514 ff_mp4_read_dec_config_descr(fc, st, pb);
518 static int mov_read_esds(MOVContext *c, AVIOContext *pb, MOVAtom atom)
520 return ff_mov_read_esds(c->fc, pb, atom);
523 static int mov_read_dac3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
526 int ac3info, acmod, lfeon, bsmod;
528 if (c->fc->nb_streams < 1)
530 st = c->fc->streams[c->fc->nb_streams-1];
532 ac3info = avio_rb24(pb);
533 bsmod = (ac3info >> 14) & 0x7;
534 acmod = (ac3info >> 11) & 0x7;
535 lfeon = (ac3info >> 10) & 0x1;
536 st->codec->channels = ((int[]){2,1,2,3,3,4,4,5})[acmod] + lfeon;
537 st->codec->channel_layout = avpriv_ac3_channel_layout_tab[acmod];
539 st->codec->channel_layout |= AV_CH_LOW_FREQUENCY;
540 st->codec->audio_service_type = bsmod;
541 if (st->codec->channels > 1 && bsmod == 0x7)
542 st->codec->audio_service_type = AV_AUDIO_SERVICE_TYPE_KARAOKE;
547 static int mov_read_dec3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
550 int eac3info, acmod, lfeon, bsmod;
552 if (c->fc->nb_streams < 1)
554 st = c->fc->streams[c->fc->nb_streams-1];
556 /* No need to parse fields for additional independent substreams and its
557 * associated dependent substreams since libavcodec's E-AC-3 decoder
558 * does not support them yet. */
559 avio_rb16(pb); /* data_rate and num_ind_sub */
560 eac3info = avio_rb24(pb);
561 bsmod = (eac3info >> 12) & 0x1f;
562 acmod = (eac3info >> 9) & 0x7;
563 lfeon = (eac3info >> 8) & 0x1;
564 st->codec->channel_layout = avpriv_ac3_channel_layout_tab[acmod];
566 st->codec->channel_layout |= AV_CH_LOW_FREQUENCY;
567 st->codec->channels = av_get_channel_layout_nb_channels(st->codec->channel_layout);
568 st->codec->audio_service_type = bsmod;
569 if (st->codec->channels > 1 && bsmod == 0x7)
570 st->codec->audio_service_type = AV_AUDIO_SERVICE_TYPE_KARAOKE;
575 static int mov_read_chan(MOVContext *c, AVIOContext *pb, MOVAtom atom)
579 if (c->fc->nb_streams < 1)
581 st = c->fc->streams[c->fc->nb_streams-1];
586 ff_mov_read_chan(c->fc, st, atom.size - 4);
591 static int mov_read_wfex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
595 if (c->fc->nb_streams < 1)
597 st = c->fc->streams[c->fc->nb_streams-1];
599 ff_get_wav_header(pb, st->codec, atom.size);
604 static int mov_read_pasp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
606 const int num = avio_rb32(pb);
607 const int den = avio_rb32(pb);
610 if (c->fc->nb_streams < 1)
612 st = c->fc->streams[c->fc->nb_streams-1];
614 if ((st->sample_aspect_ratio.den != 1 || st->sample_aspect_ratio.num) && // default
615 (den != st->sample_aspect_ratio.den || num != st->sample_aspect_ratio.num)) {
616 av_log(c->fc, AV_LOG_WARNING,
617 "sample aspect ratio already set to %d:%d, ignoring 'pasp' atom (%d:%d)\n",
618 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
620 } else if (den != 0) {
621 st->sample_aspect_ratio.num = num;
622 st->sample_aspect_ratio.den = den;
627 /* this atom contains actual media data */
628 static int mov_read_mdat(MOVContext *c, AVIOContext *pb, MOVAtom atom)
630 if (atom.size == 0) /* wrong one (MP4) */
633 return 0; /* now go for moov */
636 /* read major brand, minor version and compatible brands and store them as metadata */
637 static int mov_read_ftyp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
641 char minor_ver_str[11]; /* 32 bit integer -> 10 digits + null */
642 char* comp_brands_str;
643 uint8_t type[5] = {0};
645 avio_read(pb, type, 4);
646 if (strcmp(type, "qt "))
648 av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
649 av_dict_set(&c->fc->metadata, "major_brand", type, 0);
650 minor_ver = avio_rb32(pb); /* minor version */
651 snprintf(minor_ver_str, sizeof(minor_ver_str), "%d", minor_ver);
652 av_dict_set(&c->fc->metadata, "minor_version", minor_ver_str, 0);
654 comp_brand_size = atom.size - 8;
655 if (comp_brand_size < 0)
656 return AVERROR_INVALIDDATA;
657 comp_brands_str = av_malloc(comp_brand_size + 1); /* Add null terminator */
658 if (!comp_brands_str)
659 return AVERROR(ENOMEM);
660 avio_read(pb, comp_brands_str, comp_brand_size);
661 comp_brands_str[comp_brand_size] = 0;
662 av_dict_set(&c->fc->metadata, "compatible_brands", comp_brands_str, 0);
663 av_freep(&comp_brands_str);
668 /* this atom should contain all header atoms */
669 static int mov_read_moov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
673 if ((ret = mov_read_default(c, pb, atom)) < 0)
675 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
676 /* so we don't parse the whole file if over a network */
678 return 0; /* now go for mdat */
681 static int mov_read_moof(MOVContext *c, AVIOContext *pb, MOVAtom atom)
683 c->fragment.moof_offset = avio_tell(pb) - 8;
684 av_dlog(c->fc, "moof offset %"PRIx64"\n", c->fragment.moof_offset);
685 return mov_read_default(c, pb, atom);
688 static void mov_metadata_creation_time(AVDictionary **metadata, time_t time)
693 time -= 2082844800; /* seconds between 1904-01-01 and Epoch */
696 strftime(buffer, sizeof(buffer), "%Y-%m-%d %H:%M:%S", ptm);
697 av_dict_set(metadata, "creation_time", buffer, 0);
701 static int mov_read_mdhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
704 MOVStreamContext *sc;
706 char language[4] = {0};
708 time_t creation_time;
710 if (c->fc->nb_streams < 1)
712 st = c->fc->streams[c->fc->nb_streams-1];
715 version = avio_r8(pb);
717 av_log_ask_for_sample(c, "unsupported version %d\n", version);
718 return AVERROR_PATCHWELCOME;
720 avio_rb24(pb); /* flags */
722 creation_time = avio_rb64(pb);
725 creation_time = avio_rb32(pb);
726 avio_rb32(pb); /* modification time */
728 mov_metadata_creation_time(&st->metadata, creation_time);
730 sc->time_scale = avio_rb32(pb);
731 st->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
733 lang = avio_rb16(pb); /* language */
734 if (ff_mov_lang_to_iso639(lang, language))
735 av_dict_set(&st->metadata, "language", language, 0);
736 avio_rb16(pb); /* quality */
741 static int mov_read_mvhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
743 time_t creation_time;
744 int version = avio_r8(pb); /* version */
745 avio_rb24(pb); /* flags */
748 creation_time = avio_rb64(pb);
751 creation_time = avio_rb32(pb);
752 avio_rb32(pb); /* modification time */
754 mov_metadata_creation_time(&c->fc->metadata, creation_time);
755 c->time_scale = avio_rb32(pb); /* time scale */
757 av_dlog(c->fc, "time scale = %i\n", c->time_scale);
759 c->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
760 avio_rb32(pb); /* preferred scale */
762 avio_rb16(pb); /* preferred volume */
764 avio_skip(pb, 10); /* reserved */
766 avio_skip(pb, 36); /* display matrix */
768 avio_rb32(pb); /* preview time */
769 avio_rb32(pb); /* preview duration */
770 avio_rb32(pb); /* poster time */
771 avio_rb32(pb); /* selection time */
772 avio_rb32(pb); /* selection duration */
773 avio_rb32(pb); /* current time */
774 avio_rb32(pb); /* next track ID */
779 static int mov_read_smi(MOVContext *c, AVIOContext *pb, MOVAtom atom)
783 if (c->fc->nb_streams < 1)
785 st = c->fc->streams[c->fc->nb_streams-1];
787 if ((uint64_t)atom.size > (1<<30))
788 return AVERROR_INVALIDDATA;
790 // currently SVQ3 decoder expect full STSD header - so let's fake it
791 // this should be fixed and just SMI header should be passed
792 av_free(st->codec->extradata);
793 st->codec->extradata = av_mallocz(atom.size + 0x5a + FF_INPUT_BUFFER_PADDING_SIZE);
794 if (!st->codec->extradata)
795 return AVERROR(ENOMEM);
796 st->codec->extradata_size = 0x5a + atom.size;
797 memcpy(st->codec->extradata, "SVQ3", 4); // fake
798 avio_read(pb, st->codec->extradata + 0x5a, atom.size);
799 av_dlog(c->fc, "Reading SMI %"PRId64" %s\n", atom.size, st->codec->extradata + 0x5a);
803 static int mov_read_enda(MOVContext *c, AVIOContext *pb, MOVAtom atom)
808 if (c->fc->nb_streams < 1)
810 st = c->fc->streams[c->fc->nb_streams-1];
812 little_endian = avio_rb16(pb);
813 av_dlog(c->fc, "enda %d\n", little_endian);
814 if (little_endian == 1) {
815 switch (st->codec->codec_id) {
816 case CODEC_ID_PCM_S24BE:
817 st->codec->codec_id = CODEC_ID_PCM_S24LE;
819 case CODEC_ID_PCM_S32BE:
820 st->codec->codec_id = CODEC_ID_PCM_S32LE;
822 case CODEC_ID_PCM_F32BE:
823 st->codec->codec_id = CODEC_ID_PCM_F32LE;
825 case CODEC_ID_PCM_F64BE:
826 st->codec->codec_id = CODEC_ID_PCM_F64LE;
835 static int mov_read_fiel(MOVContext *c, AVIOContext *pb, MOVAtom atom)
838 unsigned mov_field_order;
839 enum AVFieldOrder decoded_field_order = AV_FIELD_UNKNOWN;
841 if (c->fc->nb_streams < 1) // will happen with jp2 files
843 st = c->fc->streams[c->fc->nb_streams-1];
845 return AVERROR_INVALIDDATA;
846 mov_field_order = avio_rb16(pb);
847 if ((mov_field_order & 0xFF00) == 0x0100)
848 decoded_field_order = AV_FIELD_PROGRESSIVE;
849 else if ((mov_field_order & 0xFF00) == 0x0200) {
850 switch (mov_field_order & 0xFF) {
851 case 0x01: decoded_field_order = AV_FIELD_TT;
853 case 0x06: decoded_field_order = AV_FIELD_BB;
855 case 0x09: decoded_field_order = AV_FIELD_TB;
857 case 0x0E: decoded_field_order = AV_FIELD_BT;
861 if (decoded_field_order == AV_FIELD_UNKNOWN && mov_field_order) {
862 av_log(NULL, AV_LOG_ERROR, "Unknown MOV field order 0x%04x\n", mov_field_order);
864 st->codec->field_order = decoded_field_order;
869 /* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
870 static int mov_read_extradata(MOVContext *c, AVIOContext *pb, MOVAtom atom)
876 if (c->fc->nb_streams < 1) // will happen with jp2 files
878 st= c->fc->streams[c->fc->nb_streams-1];
879 size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
880 if (size > INT_MAX || (uint64_t)atom.size > INT_MAX)
881 return AVERROR_INVALIDDATA;
882 buf= av_realloc(st->codec->extradata, size);
884 return AVERROR(ENOMEM);
885 st->codec->extradata= buf;
886 buf+= st->codec->extradata_size;
887 st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE;
888 AV_WB32( buf , atom.size + 8);
889 AV_WL32( buf + 4, atom.type);
890 avio_read(pb, buf + 8, atom.size);
894 static int mov_read_wave(MOVContext *c, AVIOContext *pb, MOVAtom atom)
898 if (c->fc->nb_streams < 1)
900 st = c->fc->streams[c->fc->nb_streams-1];
902 if ((uint64_t)atom.size > (1<<30))
903 return AVERROR_INVALIDDATA;
905 if (st->codec->codec_id == CODEC_ID_QDM2 || st->codec->codec_id == CODEC_ID_QDMC) {
906 // pass all frma atom to codec, needed at least for QDMC and QDM2
907 av_free(st->codec->extradata);
908 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
909 if (!st->codec->extradata)
910 return AVERROR(ENOMEM);
911 st->codec->extradata_size = atom.size;
912 avio_read(pb, st->codec->extradata, atom.size);
913 } else if (atom.size > 8) { /* to read frma, esds atoms */
915 if ((ret = mov_read_default(c, pb, atom)) < 0)
918 avio_skip(pb, atom.size);
923 * This function reads atom content and puts data in extradata without tag
924 * nor size unlike mov_read_extradata.
926 static int mov_read_glbl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
930 if (c->fc->nb_streams < 1)
932 st = c->fc->streams[c->fc->nb_streams-1];
934 if ((uint64_t)atom.size > (1<<30))
935 return AVERROR_INVALIDDATA;
937 if (atom.size >= 10) {
938 // Broken files created by legacy versions of libavformat will
939 // wrap a whole fiel atom inside of a glbl atom.
940 unsigned size = avio_rb32(pb);
941 unsigned type = avio_rl32(pb);
942 avio_seek(pb, -8, SEEK_CUR);
943 if (type == MKTAG('f','i','e','l') && size == atom.size)
944 return mov_read_default(c, pb, atom);
946 av_free(st->codec->extradata);
947 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
948 if (!st->codec->extradata)
949 return AVERROR(ENOMEM);
950 st->codec->extradata_size = atom.size;
951 avio_read(pb, st->codec->extradata, atom.size);
955 static int mov_read_dvc1(MOVContext *c, AVIOContext *pb, MOVAtom atom)
958 uint8_t profile_level;
960 if (c->fc->nb_streams < 1)
962 st = c->fc->streams[c->fc->nb_streams-1];
964 if (atom.size >= (1<<28) || atom.size < 7)
965 return AVERROR_INVALIDDATA;
967 profile_level = avio_r8(pb);
968 if ((profile_level & 0xf0) != 0xc0)
971 av_free(st->codec->extradata);
972 st->codec->extradata = av_mallocz(atom.size - 7 + FF_INPUT_BUFFER_PADDING_SIZE);
973 if (!st->codec->extradata)
974 return AVERROR(ENOMEM);
975 st->codec->extradata_size = atom.size - 7;
976 avio_seek(pb, 6, SEEK_CUR);
977 avio_read(pb, st->codec->extradata, st->codec->extradata_size);
982 * An strf atom is a BITMAPINFOHEADER struct. This struct is 40 bytes itself,
983 * but can have extradata appended at the end after the 40 bytes belonging
986 static int mov_read_strf(MOVContext *c, AVIOContext *pb, MOVAtom atom)
990 if (c->fc->nb_streams < 1)
994 st = c->fc->streams[c->fc->nb_streams-1];
996 if ((uint64_t)atom.size > (1<<30))
997 return AVERROR_INVALIDDATA;
999 av_free(st->codec->extradata);
1000 st->codec->extradata = av_mallocz(atom.size - 40 + FF_INPUT_BUFFER_PADDING_SIZE);
1001 if (!st->codec->extradata)
1002 return AVERROR(ENOMEM);
1003 st->codec->extradata_size = atom.size - 40;
1005 avio_read(pb, st->codec->extradata, atom.size - 40);
1009 static int mov_read_stco(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1012 MOVStreamContext *sc;
1013 unsigned int i, entries;
1015 if (c->fc->nb_streams < 1)
1017 st = c->fc->streams[c->fc->nb_streams-1];
1020 avio_r8(pb); /* version */
1021 avio_rb24(pb); /* flags */
1023 entries = avio_rb32(pb);
1027 if (entries >= UINT_MAX/sizeof(int64_t))
1028 return AVERROR_INVALIDDATA;
1030 sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
1031 if (!sc->chunk_offsets)
1032 return AVERROR(ENOMEM);
1033 sc->chunk_count = entries;
1035 if (atom.type == MKTAG('s','t','c','o'))
1036 for (i=0; i<entries; i++)
1037 sc->chunk_offsets[i] = avio_rb32(pb);
1038 else if (atom.type == MKTAG('c','o','6','4'))
1039 for (i=0; i<entries; i++)
1040 sc->chunk_offsets[i] = avio_rb64(pb);
1042 return AVERROR_INVALIDDATA;
1048 * Compute codec id for 'lpcm' tag.
1049 * See CoreAudioTypes and AudioStreamBasicDescription at Apple.
1051 enum CodecID ff_mov_get_lpcm_codec_id(int bps, int flags)
1053 if (flags & 1) { // floating point
1054 if (flags & 2) { // big endian
1055 if (bps == 32) return CODEC_ID_PCM_F32BE;
1056 else if (bps == 64) return CODEC_ID_PCM_F64BE;
1058 if (bps == 32) return CODEC_ID_PCM_F32LE;
1059 else if (bps == 64) return CODEC_ID_PCM_F64LE;
1065 if (flags & 4) return CODEC_ID_PCM_S8;
1066 else return CODEC_ID_PCM_U8;
1067 else if (bps == 16) return CODEC_ID_PCM_S16BE;
1068 else if (bps == 24) return CODEC_ID_PCM_S24BE;
1069 else if (bps == 32) return CODEC_ID_PCM_S32BE;
1072 if (flags & 4) return CODEC_ID_PCM_S8;
1073 else return CODEC_ID_PCM_U8;
1074 else if (bps == 16) return CODEC_ID_PCM_S16LE;
1075 else if (bps == 24) return CODEC_ID_PCM_S24LE;
1076 else if (bps == 32) return CODEC_ID_PCM_S32LE;
1079 return CODEC_ID_NONE;
1082 int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries)
1085 MOVStreamContext *sc;
1086 int j, pseudo_stream_id;
1088 if (c->fc->nb_streams < 1)
1090 st = c->fc->streams[c->fc->nb_streams-1];
1093 for (pseudo_stream_id=0; pseudo_stream_id<entries; pseudo_stream_id++) {
1094 //Parsing Sample description table
1097 MOVAtom a = { AV_RL32("stsd") };
1098 int64_t start_pos = avio_tell(pb);
1099 int size = avio_rb32(pb); /* size */
1100 uint32_t format = avio_rl32(pb); /* data format */
1103 avio_rb32(pb); /* reserved */
1104 avio_rb16(pb); /* reserved */
1105 dref_id = avio_rb16(pb);
1108 if (st->codec->codec_tag &&
1109 st->codec->codec_tag != format &&
1110 (c->fc->video_codec_id ? ff_codec_get_id(ff_codec_movvideo_tags, format) != c->fc->video_codec_id
1111 : st->codec->codec_tag != MKTAG('j','p','e','g'))
1113 /* Multiple fourcc, we skip JPEG. This is not correct, we should
1114 * export it as a separate AVStream but this needs a few changes
1115 * in the MOV demuxer, patch welcome. */
1117 av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n");
1118 avio_skip(pb, size - (avio_tell(pb) - start_pos));
1121 /* we cannot demux concatenated h264 streams because of different extradata */
1122 if (st->codec->codec_tag && st->codec->codec_tag == AV_RL32("avc1"))
1124 sc->pseudo_stream_id = st->codec->codec_tag ? -1 : pseudo_stream_id;
1125 sc->dref_id= dref_id;
1127 st->codec->codec_tag = format;
1128 id = ff_codec_get_id(ff_codec_movaudio_tags, format);
1129 if (id<=0 && ((format&0xFFFF) == 'm'+('s'<<8) || (format&0xFFFF) == 'T'+('S'<<8)))
1130 id = ff_codec_get_id(ff_codec_wav_tags, av_bswap32(format)&0xFFFF);
1132 if (st->codec->codec_type != AVMEDIA_TYPE_VIDEO && id > 0) {
1133 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
1134 } else if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO && /* do not overwrite codec type */
1135 format && format != MKTAG('m','p','4','s')) { /* skip old asf mpeg4 tag */
1136 id = ff_codec_get_id(ff_codec_movvideo_tags, format);
1138 id = ff_codec_get_id(ff_codec_bmp_tags, format);
1140 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
1141 else if (st->codec->codec_type == AVMEDIA_TYPE_DATA){
1142 id = ff_codec_get_id(ff_codec_movsubtitle_tags, format);
1144 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
1148 av_dlog(c->fc, "size=%d 4CC= %c%c%c%c codec_type=%d\n", size,
1149 (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff,
1150 (format >> 24) & 0xff, st->codec->codec_type);
1152 if (st->codec->codec_type==AVMEDIA_TYPE_VIDEO) {
1153 unsigned int color_depth, len;
1154 int color_greyscale;
1157 st->codec->codec_id = id;
1158 avio_rb16(pb); /* version */
1159 avio_rb16(pb); /* revision level */
1160 avio_rb32(pb); /* vendor */
1161 avio_rb32(pb); /* temporal quality */
1162 avio_rb32(pb); /* spatial quality */
1164 st->codec->width = avio_rb16(pb); /* width */
1165 st->codec->height = avio_rb16(pb); /* height */
1167 avio_rb32(pb); /* horiz resolution */
1168 avio_rb32(pb); /* vert resolution */
1169 avio_rb32(pb); /* data size, always 0 */
1170 avio_rb16(pb); /* frames per samples */
1172 len = avio_r8(pb); /* codec name, pascal string */
1175 mov_read_mac_string(c, pb, len, st->codec->codec_name, 32);
1177 avio_skip(pb, 31 - len);
1178 /* codec_tag YV12 triggers an UV swap in rawdec.c */
1179 if (!memcmp(st->codec->codec_name, "Planar Y'CbCr 8-bit 4:2:0", 25))
1180 st->codec->codec_tag=MKTAG('I', '4', '2', '0');
1182 st->codec->bits_per_coded_sample = avio_rb16(pb); /* depth */
1183 color_table_id = avio_rb16(pb); /* colortable id */
1184 av_dlog(c->fc, "depth %d, ctab id %d\n",
1185 st->codec->bits_per_coded_sample, color_table_id);
1186 /* figure out the palette situation */
1187 color_depth = st->codec->bits_per_coded_sample & 0x1F;
1188 color_greyscale = st->codec->bits_per_coded_sample & 0x20;
1190 /* if the depth is 2, 4, or 8 bpp, file is palettized */
1191 if ((color_depth == 2) || (color_depth == 4) ||
1192 (color_depth == 8)) {
1193 /* for palette traversal */
1194 unsigned int color_start, color_count, color_end;
1195 unsigned char r, g, b;
1197 if (color_greyscale) {
1198 int color_index, color_dec;
1199 /* compute the greyscale palette */
1200 st->codec->bits_per_coded_sample = color_depth;
1201 color_count = 1 << color_depth;
1203 color_dec = 256 / (color_count - 1);
1204 for (j = 0; j < color_count; j++) {
1205 r = g = b = color_index;
1207 (r << 16) | (g << 8) | (b);
1208 color_index -= color_dec;
1209 if (color_index < 0)
1212 } else if (color_table_id) {
1213 const uint8_t *color_table;
1214 /* if flag bit 3 is set, use the default palette */
1215 color_count = 1 << color_depth;
1216 if (color_depth == 2)
1217 color_table = ff_qt_default_palette_4;
1218 else if (color_depth == 4)
1219 color_table = ff_qt_default_palette_16;
1221 color_table = ff_qt_default_palette_256;
1223 for (j = 0; j < color_count; j++) {
1224 r = color_table[j * 3 + 0];
1225 g = color_table[j * 3 + 1];
1226 b = color_table[j * 3 + 2];
1228 (r << 16) | (g << 8) | (b);
1231 /* load the palette from the file */
1232 color_start = avio_rb32(pb);
1233 color_count = avio_rb16(pb);
1234 color_end = avio_rb16(pb);
1235 if ((color_start <= 255) &&
1236 (color_end <= 255)) {
1237 for (j = color_start; j <= color_end; j++) {
1238 /* each R, G, or B component is 16 bits;
1239 * only use the top 8 bits; skip alpha bytes
1250 (r << 16) | (g << 8) | (b);
1254 sc->has_palette = 1;
1256 } else if (st->codec->codec_type==AVMEDIA_TYPE_AUDIO) {
1257 int bits_per_sample, flags;
1258 uint16_t version = avio_rb16(pb);
1260 st->codec->codec_id = id;
1261 avio_rb16(pb); /* revision level */
1262 avio_rb32(pb); /* vendor */
1264 st->codec->channels = avio_rb16(pb); /* channel count */
1265 av_dlog(c->fc, "audio channels %d\n", st->codec->channels);
1266 st->codec->bits_per_coded_sample = avio_rb16(pb); /* sample size */
1268 sc->audio_cid = avio_rb16(pb);
1269 avio_rb16(pb); /* packet size = 0 */
1271 st->codec->sample_rate = ((avio_rb32(pb) >> 16));
1273 //Read QT version 1 fields. In version 0 these do not exist.
1274 av_dlog(c->fc, "version =%d, isom =%d\n",version,c->isom);
1277 sc->samples_per_frame = avio_rb32(pb);
1278 avio_rb32(pb); /* bytes per packet */
1279 sc->bytes_per_frame = avio_rb32(pb);
1280 avio_rb32(pb); /* bytes per sample */
1281 } else if (version==2) {
1282 avio_rb32(pb); /* sizeof struct only */
1283 st->codec->sample_rate = av_int2double(avio_rb64(pb)); /* float 64 */
1284 st->codec->channels = avio_rb32(pb);
1285 avio_rb32(pb); /* always 0x7F000000 */
1286 st->codec->bits_per_coded_sample = avio_rb32(pb); /* bits per channel if sound is uncompressed */
1287 flags = avio_rb32(pb); /* lpcm format specific flag */
1288 sc->bytes_per_frame = avio_rb32(pb); /* bytes per audio packet if constant */
1289 sc->samples_per_frame = avio_rb32(pb); /* lpcm frames per audio packet if constant */
1290 if (format == MKTAG('l','p','c','m'))
1291 st->codec->codec_id = ff_mov_get_lpcm_codec_id(st->codec->bits_per_coded_sample, flags);
1295 switch (st->codec->codec_id) {
1296 case CODEC_ID_PCM_S8:
1297 case CODEC_ID_PCM_U8:
1298 if (st->codec->bits_per_coded_sample == 16)
1299 st->codec->codec_id = CODEC_ID_PCM_S16BE;
1301 case CODEC_ID_PCM_S16LE:
1302 case CODEC_ID_PCM_S16BE:
1303 if (st->codec->bits_per_coded_sample == 8)
1304 st->codec->codec_id = CODEC_ID_PCM_S8;
1305 else if (st->codec->bits_per_coded_sample == 24)
1306 st->codec->codec_id =
1307 st->codec->codec_id == CODEC_ID_PCM_S16BE ?
1308 CODEC_ID_PCM_S24BE : CODEC_ID_PCM_S24LE;
1310 /* set values for old format before stsd version 1 appeared */
1311 case CODEC_ID_MACE3:
1312 sc->samples_per_frame = 6;
1313 sc->bytes_per_frame = 2*st->codec->channels;
1315 case CODEC_ID_MACE6:
1316 sc->samples_per_frame = 6;
1317 sc->bytes_per_frame = 1*st->codec->channels;
1319 case CODEC_ID_ADPCM_IMA_QT:
1320 sc->samples_per_frame = 64;
1321 sc->bytes_per_frame = 34*st->codec->channels;
1324 sc->samples_per_frame = 160;
1325 sc->bytes_per_frame = 33;
1331 bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
1332 if (bits_per_sample) {
1333 st->codec->bits_per_coded_sample = bits_per_sample;
1334 sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
1336 } else if (st->codec->codec_type==AVMEDIA_TYPE_SUBTITLE){
1337 // ttxt stsd contains display flags, justification, background
1338 // color, fonts, and default styles, so fake an atom to read it
1339 MOVAtom fake_atom = { .size = size - (avio_tell(pb) - start_pos) };
1340 if (format != AV_RL32("mp4s")) // mp4s contains a regular esds atom
1341 mov_read_glbl(c, pb, fake_atom);
1342 st->codec->codec_id= id;
1343 st->codec->width = sc->width;
1344 st->codec->height = sc->height;
1346 /* other codec type, just skip (rtp, mp4s, tmcd ...) */
1347 avio_skip(pb, size - (avio_tell(pb) - start_pos));
1349 /* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */
1350 a.size = size - (avio_tell(pb) - start_pos);
1353 if ((ret = mov_read_default(c, pb, a)) < 0)
1355 } else if (a.size > 0)
1356 avio_skip(pb, a.size);
1359 if (st->codec->codec_type==AVMEDIA_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1)
1360 st->codec->sample_rate= sc->time_scale;
1362 /* special codec parameters handling */
1363 switch (st->codec->codec_id) {
1364 #if CONFIG_DV_DEMUXER
1365 case CODEC_ID_DVAUDIO:
1366 c->dv_fctx = avformat_alloc_context();
1367 c->dv_demux = avpriv_dv_init_demux(c->dv_fctx);
1369 av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
1370 return AVERROR(ENOMEM);
1372 sc->dv_audio_container = 1;
1373 st->codec->codec_id = CODEC_ID_PCM_S16LE;
1376 /* no ifdef since parameters are always those */
1377 case CODEC_ID_QCELP:
1378 // force sample rate for qcelp when not stored in mov
1379 if (st->codec->codec_tag != MKTAG('Q','c','l','p'))
1380 st->codec->sample_rate = 8000;
1381 st->codec->channels= 1; /* really needed */
1383 case CODEC_ID_AMR_NB:
1384 st->codec->channels= 1; /* really needed */
1385 /* force sample rate for amr, stsd in 3gp does not store sample rate */
1386 st->codec->sample_rate = 8000;
1388 case CODEC_ID_AMR_WB:
1389 st->codec->channels = 1;
1390 st->codec->sample_rate = 16000;
1394 st->codec->codec_type = AVMEDIA_TYPE_AUDIO; /* force type after stsd for m1a hdlr */
1395 st->need_parsing = AVSTREAM_PARSE_FULL;
1398 case CODEC_ID_ADPCM_MS:
1399 case CODEC_ID_ADPCM_IMA_WAV:
1401 st->codec->block_align = sc->bytes_per_frame;
1404 if (st->codec->extradata_size == 36) {
1405 st->codec->channels = AV_RB8 (st->codec->extradata+21);
1406 st->codec->sample_rate = AV_RB32(st->codec->extradata+32);
1410 st->need_parsing = AVSTREAM_PARSE_FULL;
1419 static int mov_read_stsd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1423 avio_r8(pb); /* version */
1424 avio_rb24(pb); /* flags */
1425 entries = avio_rb32(pb);
1427 return ff_mov_read_stsd_entries(c, pb, entries);
1430 static int mov_read_stsc(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1433 MOVStreamContext *sc;
1434 unsigned int i, entries;
1436 if (c->fc->nb_streams < 1)
1438 st = c->fc->streams[c->fc->nb_streams-1];
1441 avio_r8(pb); /* version */
1442 avio_rb24(pb); /* flags */
1444 entries = avio_rb32(pb);
1446 av_dlog(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
1450 if (entries >= UINT_MAX / sizeof(*sc->stsc_data))
1451 return AVERROR_INVALIDDATA;
1452 sc->stsc_data = av_malloc(entries * sizeof(*sc->stsc_data));
1454 return AVERROR(ENOMEM);
1455 sc->stsc_count = entries;
1457 for (i=0; i<entries; i++) {
1458 sc->stsc_data[i].first = avio_rb32(pb);
1459 sc->stsc_data[i].count = avio_rb32(pb);
1460 sc->stsc_data[i].id = avio_rb32(pb);
1465 static int mov_read_stps(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1468 MOVStreamContext *sc;
1469 unsigned i, entries;
1471 if (c->fc->nb_streams < 1)
1473 st = c->fc->streams[c->fc->nb_streams-1];
1476 avio_rb32(pb); // version + flags
1478 entries = avio_rb32(pb);
1479 if (entries >= UINT_MAX / sizeof(*sc->stps_data))
1480 return AVERROR_INVALIDDATA;
1481 sc->stps_data = av_malloc(entries * sizeof(*sc->stps_data));
1483 return AVERROR(ENOMEM);
1484 sc->stps_count = entries;
1486 for (i = 0; i < entries; i++) {
1487 sc->stps_data[i] = avio_rb32(pb);
1488 //av_dlog(c->fc, "stps %d\n", sc->stps_data[i]);
1494 static int mov_read_stss(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1497 MOVStreamContext *sc;
1498 unsigned int i, entries;
1500 if (c->fc->nb_streams < 1)
1502 st = c->fc->streams[c->fc->nb_streams-1];
1505 avio_r8(pb); /* version */
1506 avio_rb24(pb); /* flags */
1508 entries = avio_rb32(pb);
1510 av_dlog(c->fc, "keyframe_count = %d\n", entries);
1514 sc->keyframe_absent = 1;
1517 if (entries >= UINT_MAX / sizeof(int))
1518 return AVERROR_INVALIDDATA;
1519 sc->keyframes = av_malloc(entries * sizeof(int));
1521 return AVERROR(ENOMEM);
1522 sc->keyframe_count = entries;
1524 for (i=0; i<entries; i++) {
1525 sc->keyframes[i] = avio_rb32(pb);
1526 //av_dlog(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
1531 static int mov_read_stsz(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1534 MOVStreamContext *sc;
1535 unsigned int i, entries, sample_size, field_size, num_bytes;
1539 if (c->fc->nb_streams < 1)
1541 st = c->fc->streams[c->fc->nb_streams-1];
1544 avio_r8(pb); /* version */
1545 avio_rb24(pb); /* flags */
1547 if (atom.type == MKTAG('s','t','s','z')) {
1548 sample_size = avio_rb32(pb);
1549 if (!sc->sample_size) /* do not overwrite value computed in stsd */
1550 sc->sample_size = sample_size;
1554 avio_rb24(pb); /* reserved */
1555 field_size = avio_r8(pb);
1557 entries = avio_rb32(pb);
1559 av_dlog(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, entries);
1561 sc->sample_count = entries;
1565 if (field_size != 4 && field_size != 8 && field_size != 16 && field_size != 32) {
1566 av_log(c->fc, AV_LOG_ERROR, "Invalid sample field size %d\n", field_size);
1567 return AVERROR_INVALIDDATA;
1572 if (entries >= UINT_MAX / sizeof(int) || entries >= (UINT_MAX - 4) / field_size)
1573 return AVERROR_INVALIDDATA;
1574 sc->sample_sizes = av_malloc(entries * sizeof(int));
1575 if (!sc->sample_sizes)
1576 return AVERROR(ENOMEM);
1578 num_bytes = (entries*field_size+4)>>3;
1580 buf = av_malloc(num_bytes+FF_INPUT_BUFFER_PADDING_SIZE);
1582 av_freep(&sc->sample_sizes);
1583 return AVERROR(ENOMEM);
1586 if (avio_read(pb, buf, num_bytes) < num_bytes) {
1587 av_freep(&sc->sample_sizes);
1589 return AVERROR_INVALIDDATA;
1592 init_get_bits(&gb, buf, 8*num_bytes);
1594 for (i = 0; i < entries; i++) {
1595 sc->sample_sizes[i] = get_bits_long(&gb, field_size);
1596 sc->data_size += sc->sample_sizes[i];
1603 static int mov_read_stts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1606 MOVStreamContext *sc;
1607 unsigned int i, entries;
1609 int64_t total_sample_count=0;
1611 if (c->fc->nb_streams < 1)
1613 st = c->fc->streams[c->fc->nb_streams-1];
1616 avio_r8(pb); /* version */
1617 avio_rb24(pb); /* flags */
1618 entries = avio_rb32(pb);
1620 av_dlog(c->fc, "track[%i].stts.entries = %i\n",
1621 c->fc->nb_streams-1, entries);
1625 if (entries >= UINT_MAX / sizeof(*sc->stts_data))
1626 return AVERROR(EINVAL);
1628 sc->stts_data = av_malloc(entries * sizeof(*sc->stts_data));
1630 return AVERROR(ENOMEM);
1632 sc->stts_count = entries;
1634 for (i=0; i<entries; i++) {
1635 int sample_duration;
1638 sample_count=avio_rb32(pb);
1639 sample_duration = avio_rb32(pb);
1640 sc->stts_data[i].count= sample_count;
1641 sc->stts_data[i].duration= sample_duration;
1643 av_dlog(c->fc, "sample_count=%d, sample_duration=%d\n",
1644 sample_count, sample_duration);
1646 duration+=(int64_t)sample_duration*sample_count;
1647 total_sample_count+=sample_count;
1650 st->nb_frames= total_sample_count;
1652 st->duration= duration;
1653 sc->track_end = duration;
1657 static int mov_read_ctts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1660 MOVStreamContext *sc;
1661 unsigned int i, entries;
1663 if (c->fc->nb_streams < 1)
1665 st = c->fc->streams[c->fc->nb_streams-1];
1668 avio_r8(pb); /* version */
1669 avio_rb24(pb); /* flags */
1670 entries = avio_rb32(pb);
1672 av_dlog(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
1676 if (entries >= UINT_MAX / sizeof(*sc->ctts_data))
1677 return AVERROR_INVALIDDATA;
1678 sc->ctts_data = av_malloc(entries * sizeof(*sc->ctts_data));
1680 return AVERROR(ENOMEM);
1681 sc->ctts_count = entries;
1683 for (i=0; i<entries; i++) {
1684 int count =avio_rb32(pb);
1685 int duration =avio_rb32(pb);
1687 sc->ctts_data[i].count = count;
1688 sc->ctts_data[i].duration= duration;
1690 sc->dts_shift = FFMAX(sc->dts_shift, -duration);
1693 av_dlog(c->fc, "dts shift %d\n", sc->dts_shift);
1698 static void mov_build_index(MOVContext *mov, AVStream *st)
1700 MOVStreamContext *sc = st->priv_data;
1701 int64_t current_offset;
1702 int64_t current_dts = 0;
1703 unsigned int stts_index = 0;
1704 unsigned int stsc_index = 0;
1705 unsigned int stss_index = 0;
1706 unsigned int stps_index = 0;
1708 uint64_t stream_size = 0;
1711 /* adjust first dts according to edit list */
1712 if (sc->time_offset && mov->time_scale > 0) {
1713 if (sc->time_offset < 0)
1714 sc->time_offset = av_rescale(sc->time_offset, sc->time_scale, mov->time_scale);
1715 current_dts = -sc->time_offset;
1716 if (sc->ctts_data && sc->stts_data && sc->stts_data[0].duration &&
1717 sc->ctts_data[0].duration / sc->stts_data[0].duration > 16) {
1718 /* more than 16 frames delay, dts are likely wrong
1719 this happens with files created by iMovie */
1721 st->codec->has_b_frames = 1;
1725 /* only use old uncompressed audio chunk demuxing when stts specifies it */
1726 if (!(st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
1727 sc->stts_count == 1 && sc->stts_data[0].duration == 1)) {
1728 unsigned int current_sample = 0;
1729 unsigned int stts_sample = 0;
1730 unsigned int sample_size;
1731 unsigned int distance = 0;
1732 int key_off = (sc->keyframes && sc->keyframes[0] > 0) || (sc->stps_data && sc->stps_data[0] > 0);
1734 current_dts -= sc->dts_shift;
1736 if (!sc->sample_count)
1738 if (sc->sample_count >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries)
1740 mem = av_realloc(st->index_entries, (st->nb_index_entries + sc->sample_count) * sizeof(*st->index_entries));
1743 st->index_entries = mem;
1744 st->index_entries_allocated_size = (st->nb_index_entries + sc->sample_count) * sizeof(*st->index_entries);
1746 for (i = 0; i < sc->chunk_count; i++) {
1747 current_offset = sc->chunk_offsets[i];
1748 while (stsc_index + 1 < sc->stsc_count &&
1749 i + 1 == sc->stsc_data[stsc_index + 1].first)
1751 for (j = 0; j < sc->stsc_data[stsc_index].count; j++) {
1753 if (current_sample >= sc->sample_count) {
1754 av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
1758 if (!sc->keyframe_absent && (!sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index])) {
1760 if (stss_index + 1 < sc->keyframe_count)
1762 } else if (sc->stps_count && current_sample+key_off == sc->stps_data[stps_index]) {
1764 if (stps_index + 1 < sc->stps_count)
1769 sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
1770 if (sc->pseudo_stream_id == -1 ||
1771 sc->stsc_data[stsc_index].id - 1 == sc->pseudo_stream_id) {
1772 AVIndexEntry *e = &st->index_entries[st->nb_index_entries++];
1773 e->pos = current_offset;
1774 e->timestamp = current_dts;
1775 e->size = sample_size;
1776 e->min_distance = distance;
1777 e->flags = keyframe ? AVINDEX_KEYFRAME : 0;
1778 av_dlog(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
1779 "size %d, distance %d, keyframe %d\n", st->index, current_sample,
1780 current_offset, current_dts, sample_size, distance, keyframe);
1783 current_offset += sample_size;
1784 stream_size += sample_size;
1785 current_dts += sc->stts_data[stts_index].duration;
1789 if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
1795 if (st->duration > 0)
1796 st->codec->bit_rate = stream_size*8*sc->time_scale/st->duration;
1798 unsigned chunk_samples, total = 0;
1800 // compute total chunk count
1801 for (i = 0; i < sc->stsc_count; i++) {
1802 unsigned count, chunk_count;
1804 chunk_samples = sc->stsc_data[i].count;
1805 if (i != sc->stsc_count - 1 &&
1806 sc->samples_per_frame && chunk_samples % sc->samples_per_frame) {
1807 av_log(mov->fc, AV_LOG_ERROR, "error unaligned chunk\n");
1811 if (sc->samples_per_frame >= 160) { // gsm
1812 count = chunk_samples / sc->samples_per_frame;
1813 } else if (sc->samples_per_frame > 1) {
1814 unsigned samples = (1024/sc->samples_per_frame)*sc->samples_per_frame;
1815 count = (chunk_samples+samples-1) / samples;
1817 count = (chunk_samples+1023) / 1024;
1820 if (i < sc->stsc_count - 1)
1821 chunk_count = sc->stsc_data[i+1].first - sc->stsc_data[i].first;
1823 chunk_count = sc->chunk_count - (sc->stsc_data[i].first - 1);
1824 total += chunk_count * count;
1827 av_dlog(mov->fc, "chunk count %d\n", total);
1828 if (total >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries)
1830 mem = av_realloc(st->index_entries, (st->nb_index_entries + total) * sizeof(*st->index_entries));
1833 st->index_entries = mem;
1834 st->index_entries_allocated_size = (st->nb_index_entries + total) * sizeof(*st->index_entries);
1837 for (i = 0; i < sc->chunk_count; i++) {
1838 current_offset = sc->chunk_offsets[i];
1839 if (stsc_index + 1 < sc->stsc_count &&
1840 i + 1 == sc->stsc_data[stsc_index + 1].first)
1842 chunk_samples = sc->stsc_data[stsc_index].count;
1844 while (chunk_samples > 0) {
1846 unsigned size, samples;
1848 if (sc->samples_per_frame >= 160) { // gsm
1849 samples = sc->samples_per_frame;
1850 size = sc->bytes_per_frame;
1852 if (sc->samples_per_frame > 1) {
1853 samples = FFMIN((1024 / sc->samples_per_frame)*
1854 sc->samples_per_frame, chunk_samples);
1855 size = (samples / sc->samples_per_frame) * sc->bytes_per_frame;
1857 samples = FFMIN(1024, chunk_samples);
1858 size = samples * sc->sample_size;
1862 if (st->nb_index_entries >= total) {
1863 av_log(mov->fc, AV_LOG_ERROR, "wrong chunk count %d\n", total);
1866 e = &st->index_entries[st->nb_index_entries++];
1867 e->pos = current_offset;
1868 e->timestamp = current_dts;
1870 e->min_distance = 0;
1871 e->flags = AVINDEX_KEYFRAME;
1872 av_dlog(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", "
1873 "size %d, duration %d\n", st->index, i, current_offset, current_dts,
1876 current_offset += size;
1877 current_dts += samples;
1878 chunk_samples -= samples;
1884 static int mov_open_dref(AVIOContext **pb, char *src, MOVDref *ref,
1885 AVIOInterruptCB *int_cb)
1887 /* try relative path, we do not try the absolute because it can leak information about our
1888 system to an attacker */
1889 if (ref->nlvl_to > 0 && ref->nlvl_from > 0) {
1890 char filename[1024];
1894 /* find a source dir */
1895 src_path = strrchr(src, '/');
1901 /* find a next level down to target */
1902 for (i = 0, l = strlen(ref->path) - 1; l >= 0; l--)
1903 if (ref->path[l] == '/') {
1904 if (i == ref->nlvl_to - 1)
1910 /* compose filename if next level down to target was found */
1911 if (i == ref->nlvl_to - 1 && src_path - src < sizeof(filename)) {
1912 memcpy(filename, src, src_path - src);
1913 filename[src_path - src] = 0;
1915 for (i = 1; i < ref->nlvl_from; i++)
1916 av_strlcat(filename, "../", 1024);
1918 av_strlcat(filename, ref->path + l + 1, 1024);
1920 if (!avio_open2(pb, filename, AVIO_FLAG_READ, int_cb, NULL))
1925 return AVERROR(ENOENT);
1928 static int mov_read_trak(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1931 MOVStreamContext *sc;
1934 st = avformat_new_stream(c->fc, NULL);
1935 if (!st) return AVERROR(ENOMEM);
1936 st->id = c->fc->nb_streams;
1937 sc = av_mallocz(sizeof(MOVStreamContext));
1938 if (!sc) return AVERROR(ENOMEM);
1941 st->codec->codec_type = AVMEDIA_TYPE_DATA;
1942 sc->ffindex = st->index;
1944 if ((ret = mov_read_default(c, pb, atom)) < 0)
1948 if (sc->chunk_count && (!sc->stts_count || !sc->stsc_count ||
1949 (!sc->sample_size && !sc->sample_count))) {
1950 av_log(c->fc, AV_LOG_ERROR, "stream %d, missing mandatory atoms, broken header\n",
1955 if (sc->time_scale <= 0) {
1956 av_log(c->fc, AV_LOG_WARNING, "stream %d, timescale not set\n", st->index);
1957 sc->time_scale = c->time_scale;
1958 if (sc->time_scale <= 0)
1962 avpriv_set_pts_info(st, 64, 1, sc->time_scale);
1964 mov_build_index(c, st);
1966 if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) {
1967 MOVDref *dref = &sc->drefs[sc->dref_id - 1];
1968 if (mov_open_dref(&sc->pb, c->fc->filename, dref, &c->fc->interrupt_callback) < 0)
1969 av_log(c->fc, AV_LOG_ERROR,
1970 "stream %d, error opening alias: path='%s', dir='%s', "
1971 "filename='%s', volume='%s', nlvl_from=%d, nlvl_to=%d\n",
1972 st->index, dref->path, dref->dir, dref->filename,
1973 dref->volume, dref->nlvl_from, dref->nlvl_to);
1977 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1978 if (!st->sample_aspect_ratio.num &&
1979 (st->codec->width != sc->width || st->codec->height != sc->height)) {
1980 st->sample_aspect_ratio = av_d2q(((double)st->codec->height * sc->width) /
1981 ((double)st->codec->width * sc->height), INT_MAX);
1984 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
1985 sc->time_scale*st->nb_frames, st->duration, INT_MAX);
1987 #if FF_API_R_FRAME_RATE
1988 if (sc->stts_count == 1 || (sc->stts_count == 2 && sc->stts_data[1].count == 1))
1989 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den,
1990 sc->time_scale, sc->stts_data[0].duration, INT_MAX);
1994 switch (st->codec->codec_id) {
1995 #if CONFIG_H261_DECODER
1998 #if CONFIG_H263_DECODER
2001 #if CONFIG_MPEG4_DECODER
2002 case CODEC_ID_MPEG4:
2004 st->codec->width = 0; /* let decoder init width/height */
2005 st->codec->height= 0;
2009 /* Do not need those anymore. */
2010 av_freep(&sc->chunk_offsets);
2011 av_freep(&sc->stsc_data);
2012 av_freep(&sc->sample_sizes);
2013 av_freep(&sc->keyframes);
2014 av_freep(&sc->stts_data);
2015 av_freep(&sc->stps_data);
2020 static int mov_read_ilst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2023 c->itunes_metadata = 1;
2024 ret = mov_read_default(c, pb, atom);
2025 c->itunes_metadata = 0;
2029 static int mov_read_meta(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2031 while (atom.size > 8) {
2032 uint32_t tag = avio_rl32(pb);
2034 if (tag == MKTAG('h','d','l','r')) {
2035 avio_seek(pb, -8, SEEK_CUR);
2037 return mov_read_default(c, pb, atom);
2043 static int mov_read_tkhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2048 int64_t disp_transform[2];
2049 int display_matrix[3][2];
2051 MOVStreamContext *sc;
2054 if (c->fc->nb_streams < 1)
2056 st = c->fc->streams[c->fc->nb_streams-1];
2059 version = avio_r8(pb);
2060 avio_rb24(pb); /* flags */
2062 MOV_TRACK_ENABLED 0x0001
2063 MOV_TRACK_IN_MOVIE 0x0002
2064 MOV_TRACK_IN_PREVIEW 0x0004
2065 MOV_TRACK_IN_POSTER 0x0008
2072 avio_rb32(pb); /* creation time */
2073 avio_rb32(pb); /* modification time */
2075 st->id = (int)avio_rb32(pb); /* track id (NOT 0 !)*/
2076 avio_rb32(pb); /* reserved */
2078 /* highlevel (considering edits) duration in movie timebase */
2079 (version == 1) ? avio_rb64(pb) : avio_rb32(pb);
2080 avio_rb32(pb); /* reserved */
2081 avio_rb32(pb); /* reserved */
2083 avio_rb16(pb); /* layer */
2084 avio_rb16(pb); /* alternate group */
2085 avio_rb16(pb); /* volume */
2086 avio_rb16(pb); /* reserved */
2088 //read in the display matrix (outlined in ISO 14496-12, Section 6.2.2)
2089 // they're kept in fixed point format through all calculations
2090 // ignore u,v,z b/c we don't need the scale factor to calc aspect ratio
2091 for (i = 0; i < 3; i++) {
2092 display_matrix[i][0] = avio_rb32(pb); // 16.16 fixed point
2093 display_matrix[i][1] = avio_rb32(pb); // 16.16 fixed point
2094 avio_rb32(pb); // 2.30 fixed point (not used)
2097 width = avio_rb32(pb); // 16.16 fixed point track width
2098 height = avio_rb32(pb); // 16.16 fixed point track height
2099 sc->width = width >> 16;
2100 sc->height = height >> 16;
2102 // transform the display width/height according to the matrix
2103 // skip this if the display matrix is the default identity matrix
2104 // or if it is rotating the picture, ex iPhone 3GS
2105 // to keep the same scale, use [width height 1<<16]
2106 if (width && height &&
2107 ((display_matrix[0][0] != 65536 ||
2108 display_matrix[1][1] != 65536) &&
2109 !display_matrix[0][1] &&
2110 !display_matrix[1][0] &&
2111 !display_matrix[2][0] && !display_matrix[2][1])) {
2112 for (i = 0; i < 2; i++)
2114 (int64_t) width * display_matrix[0][i] +
2115 (int64_t) height * display_matrix[1][i] +
2116 ((int64_t) display_matrix[2][i] << 16);
2118 //sample aspect ratio is new width/height divided by old width/height
2119 st->sample_aspect_ratio = av_d2q(
2120 ((double) disp_transform[0] * height) /
2121 ((double) disp_transform[1] * width), INT_MAX);
2126 static int mov_read_tfhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2128 MOVFragment *frag = &c->fragment;
2129 MOVTrackExt *trex = NULL;
2130 int flags, track_id, i;
2132 avio_r8(pb); /* version */
2133 flags = avio_rb24(pb);
2135 track_id = avio_rb32(pb);
2137 return AVERROR_INVALIDDATA;
2138 frag->track_id = track_id;
2139 for (i = 0; i < c->trex_count; i++)
2140 if (c->trex_data[i].track_id == frag->track_id) {
2141 trex = &c->trex_data[i];
2145 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding trex\n");
2146 return AVERROR_INVALIDDATA;
2149 frag->base_data_offset = flags & MOV_TFHD_BASE_DATA_OFFSET ?
2150 avio_rb64(pb) : frag->moof_offset;
2151 frag->stsd_id = flags & MOV_TFHD_STSD_ID ? avio_rb32(pb) : trex->stsd_id;
2153 frag->duration = flags & MOV_TFHD_DEFAULT_DURATION ?
2154 avio_rb32(pb) : trex->duration;
2155 frag->size = flags & MOV_TFHD_DEFAULT_SIZE ?
2156 avio_rb32(pb) : trex->size;
2157 frag->flags = flags & MOV_TFHD_DEFAULT_FLAGS ?
2158 avio_rb32(pb) : trex->flags;
2159 av_dlog(c->fc, "frag flags 0x%x\n", frag->flags);
2163 static int mov_read_chap(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2165 c->chapter_track = avio_rb32(pb);
2169 static int mov_read_trex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2173 if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data))
2174 return AVERROR_INVALIDDATA;
2175 trex = av_realloc(c->trex_data, (c->trex_count+1)*sizeof(*c->trex_data));
2177 return AVERROR(ENOMEM);
2178 c->trex_data = trex;
2179 trex = &c->trex_data[c->trex_count++];
2180 avio_r8(pb); /* version */
2181 avio_rb24(pb); /* flags */
2182 trex->track_id = avio_rb32(pb);
2183 trex->stsd_id = avio_rb32(pb);
2184 trex->duration = avio_rb32(pb);
2185 trex->size = avio_rb32(pb);
2186 trex->flags = avio_rb32(pb);
2190 static int mov_read_trun(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2192 MOVFragment *frag = &c->fragment;
2193 AVStream *st = NULL;
2194 MOVStreamContext *sc;
2198 int data_offset = 0;
2199 unsigned entries, first_sample_flags = frag->flags;
2200 int flags, distance, i, found_keyframe = 0;
2202 for (i = 0; i < c->fc->nb_streams; i++) {
2203 if (c->fc->streams[i]->id == frag->track_id) {
2204 st = c->fc->streams[i];
2209 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id);
2210 return AVERROR_INVALIDDATA;
2213 if (sc->pseudo_stream_id+1 != frag->stsd_id)
2215 avio_r8(pb); /* version */
2216 flags = avio_rb24(pb);
2217 entries = avio_rb32(pb);
2218 av_dlog(c->fc, "flags 0x%x entries %d\n", flags, entries);
2220 /* Always assume the presence of composition time offsets.
2221 * Without this assumption, for instance, we cannot deal with a track in fragmented movies that meet the following.
2222 * 1) in the initial movie, there are no samples.
2223 * 2) in the first movie fragment, there is only one sample without composition time offset.
2224 * 3) in the subsequent movie fragments, there are samples with composition time offset. */
2225 if (!sc->ctts_count && sc->sample_count)
2227 /* Complement ctts table if moov atom doesn't have ctts atom. */
2228 ctts_data = av_malloc(sizeof(*sc->ctts_data));
2230 return AVERROR(ENOMEM);
2231 sc->ctts_data = ctts_data;
2232 sc->ctts_data[sc->ctts_count].count = sc->sample_count;
2233 sc->ctts_data[sc->ctts_count].duration = 0;
2236 if ((uint64_t)entries+sc->ctts_count >= UINT_MAX/sizeof(*sc->ctts_data))
2237 return AVERROR_INVALIDDATA;
2238 ctts_data = av_realloc(sc->ctts_data,
2239 (entries+sc->ctts_count)*sizeof(*sc->ctts_data));
2241 return AVERROR(ENOMEM);
2242 sc->ctts_data = ctts_data;
2244 if (flags & MOV_TRUN_DATA_OFFSET) data_offset = avio_rb32(pb);
2245 if (flags & MOV_TRUN_FIRST_SAMPLE_FLAGS) first_sample_flags = avio_rb32(pb);
2246 dts = sc->track_end - sc->time_offset;
2247 offset = frag->base_data_offset + data_offset;
2249 av_dlog(c->fc, "first sample flags 0x%x\n", first_sample_flags);
2250 for (i = 0; i < entries; i++) {
2251 unsigned sample_size = frag->size;
2252 int sample_flags = i ? frag->flags : first_sample_flags;
2253 unsigned sample_duration = frag->duration;
2256 if (flags & MOV_TRUN_SAMPLE_DURATION) sample_duration = avio_rb32(pb);
2257 if (flags & MOV_TRUN_SAMPLE_SIZE) sample_size = avio_rb32(pb);
2258 if (flags & MOV_TRUN_SAMPLE_FLAGS) sample_flags = avio_rb32(pb);
2259 sc->ctts_data[sc->ctts_count].count = 1;
2260 sc->ctts_data[sc->ctts_count].duration = (flags & MOV_TRUN_SAMPLE_CTS) ?
2263 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
2265 else if (!found_keyframe)
2266 keyframe = found_keyframe =
2267 !(sample_flags & (MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC |
2268 MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES));
2271 av_add_index_entry(st, offset, dts, sample_size, distance,
2272 keyframe ? AVINDEX_KEYFRAME : 0);
2273 av_dlog(c->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
2274 "size %d, distance %d, keyframe %d\n", st->index, sc->sample_count+i,
2275 offset, dts, sample_size, distance, keyframe);
2277 dts += sample_duration;
2278 offset += sample_size;
2279 sc->data_size += sample_size;
2281 frag->moof_offset = offset;
2282 st->duration = sc->track_end = dts + sc->time_offset;
2286 /* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
2287 /* like the files created with Adobe Premiere 5.0, for samples see */
2288 /* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
2289 static int mov_read_wide(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2294 return 0; /* continue */
2295 if (avio_rb32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
2296 avio_skip(pb, atom.size - 4);
2299 atom.type = avio_rl32(pb);
2301 if (atom.type != MKTAG('m','d','a','t')) {
2302 avio_skip(pb, atom.size);
2305 err = mov_read_mdat(c, pb, atom);
2309 static int mov_read_cmov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2314 uint8_t *moov_data; /* uncompressed data */
2315 long cmov_len, moov_len;
2318 avio_rb32(pb); /* dcom atom */
2319 if (avio_rl32(pb) != MKTAG('d','c','o','m'))
2320 return AVERROR_INVALIDDATA;
2321 if (avio_rl32(pb) != MKTAG('z','l','i','b')) {
2322 av_log(c->fc, AV_LOG_ERROR, "unknown compression for cmov atom !");
2323 return AVERROR_INVALIDDATA;
2325 avio_rb32(pb); /* cmvd atom */
2326 if (avio_rl32(pb) != MKTAG('c','m','v','d'))
2327 return AVERROR_INVALIDDATA;
2328 moov_len = avio_rb32(pb); /* uncompressed size */
2329 cmov_len = atom.size - 6 * 4;
2331 cmov_data = av_malloc(cmov_len);
2333 return AVERROR(ENOMEM);
2334 moov_data = av_malloc(moov_len);
2337 return AVERROR(ENOMEM);
2339 avio_read(pb, cmov_data, cmov_len);
2340 if (uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
2341 goto free_and_return;
2342 if (ffio_init_context(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
2343 goto free_and_return;
2344 atom.type = MKTAG('m','o','o','v');
2345 atom.size = moov_len;
2346 ret = mov_read_default(c, &ctx, atom);
2352 av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
2353 return AVERROR(ENOSYS);
2357 /* edit list atom */
2358 static int mov_read_elst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2360 MOVStreamContext *sc;
2361 int i, edit_count, version;
2363 if (c->fc->nb_streams < 1)
2365 sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
2367 version = avio_r8(pb); /* version */
2368 avio_rb24(pb); /* flags */
2369 edit_count = avio_rb32(pb); /* entries */
2371 if ((uint64_t)edit_count*12+8 > atom.size)
2372 return AVERROR_INVALIDDATA;
2374 for (i=0; i<edit_count; i++){
2378 duration = avio_rb64(pb);
2379 time = avio_rb64(pb);
2381 duration = avio_rb32(pb); /* segment duration */
2382 time = (int32_t)avio_rb32(pb); /* media time */
2384 avio_rb32(pb); /* Media rate */
2385 if (i == 0 && time >= -1) {
2386 sc->time_offset = time != -1 ? time : -duration;
2391 av_log(c->fc, AV_LOG_WARNING, "multiple edit list entries, "
2392 "a/v desync might occur, patch welcome\n");
2394 av_dlog(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, edit_count);
2398 static const MOVParseTableEntry mov_default_parse_table[] = {
2399 { MKTAG('a','v','s','s'), mov_read_extradata },
2400 { MKTAG('c','h','p','l'), mov_read_chpl },
2401 { MKTAG('c','o','6','4'), mov_read_stco },
2402 { MKTAG('c','t','t','s'), mov_read_ctts }, /* composition time to sample */
2403 { MKTAG('d','i','n','f'), mov_read_default },
2404 { MKTAG('d','r','e','f'), mov_read_dref },
2405 { MKTAG('e','d','t','s'), mov_read_default },
2406 { MKTAG('e','l','s','t'), mov_read_elst },
2407 { MKTAG('e','n','d','a'), mov_read_enda },
2408 { MKTAG('f','i','e','l'), mov_read_fiel },
2409 { MKTAG('f','t','y','p'), mov_read_ftyp },
2410 { MKTAG('g','l','b','l'), mov_read_glbl },
2411 { MKTAG('h','d','l','r'), mov_read_hdlr },
2412 { MKTAG('i','l','s','t'), mov_read_ilst },
2413 { MKTAG('j','p','2','h'), mov_read_extradata },
2414 { MKTAG('m','d','a','t'), mov_read_mdat },
2415 { MKTAG('m','d','h','d'), mov_read_mdhd },
2416 { MKTAG('m','d','i','a'), mov_read_default },
2417 { MKTAG('m','e','t','a'), mov_read_meta },
2418 { MKTAG('m','i','n','f'), mov_read_default },
2419 { MKTAG('m','o','o','f'), mov_read_moof },
2420 { MKTAG('m','o','o','v'), mov_read_moov },
2421 { MKTAG('m','v','e','x'), mov_read_default },
2422 { MKTAG('m','v','h','d'), mov_read_mvhd },
2423 { MKTAG('S','M','I',' '), mov_read_smi }, /* Sorenson extension ??? */
2424 { MKTAG('a','l','a','c'), mov_read_extradata }, /* alac specific atom */
2425 { MKTAG('a','v','c','C'), mov_read_glbl },
2426 { MKTAG('p','a','s','p'), mov_read_pasp },
2427 { MKTAG('s','t','b','l'), mov_read_default },
2428 { MKTAG('s','t','c','o'), mov_read_stco },
2429 { MKTAG('s','t','p','s'), mov_read_stps },
2430 { MKTAG('s','t','r','f'), mov_read_strf },
2431 { MKTAG('s','t','s','c'), mov_read_stsc },
2432 { MKTAG('s','t','s','d'), mov_read_stsd }, /* sample description */
2433 { MKTAG('s','t','s','s'), mov_read_stss }, /* sync sample */
2434 { MKTAG('s','t','s','z'), mov_read_stsz }, /* sample size */
2435 { MKTAG('s','t','t','s'), mov_read_stts },
2436 { MKTAG('s','t','z','2'), mov_read_stsz }, /* compact sample size */
2437 { MKTAG('t','k','h','d'), mov_read_tkhd }, /* track header */
2438 { MKTAG('t','f','h','d'), mov_read_tfhd }, /* track fragment header */
2439 { MKTAG('t','r','a','k'), mov_read_trak },
2440 { MKTAG('t','r','a','f'), mov_read_default },
2441 { MKTAG('t','r','e','f'), mov_read_default },
2442 { MKTAG('c','h','a','p'), mov_read_chap },
2443 { MKTAG('t','r','e','x'), mov_read_trex },
2444 { MKTAG('t','r','u','n'), mov_read_trun },
2445 { MKTAG('u','d','t','a'), mov_read_default },
2446 { MKTAG('w','a','v','e'), mov_read_wave },
2447 { MKTAG('e','s','d','s'), mov_read_esds },
2448 { MKTAG('d','a','c','3'), mov_read_dac3 }, /* AC-3 info */
2449 { MKTAG('d','e','c','3'), mov_read_dec3 }, /* EAC-3 info */
2450 { MKTAG('w','i','d','e'), mov_read_wide }, /* place holder */
2451 { MKTAG('w','f','e','x'), mov_read_wfex },
2452 { MKTAG('c','m','o','v'), mov_read_cmov },
2453 { MKTAG('c','h','a','n'), mov_read_chan }, /* channel layout */
2454 { MKTAG('d','v','c','1'), mov_read_dvc1 },
2458 static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2460 int64_t total_size = 0;
2465 atom.size = INT64_MAX;
2466 while (total_size + 8 < atom.size && !pb->eof_reached) {
2467 int (*parse)(MOVContext*, AVIOContext*, MOVAtom) = NULL;
2470 if (atom.size >= 8) {
2471 a.size = avio_rb32(pb);
2472 a.type = avio_rl32(pb);
2474 av_dlog(c->fc, "type: %08x '%.4s' parent:'%.4s' sz: %"PRId64" %"PRId64" %"PRId64"\n",
2475 a.type, (char*)&a.type, (char*)&atom.type, a.size, total_size, atom.size);
2477 if (a.size == 1) { /* 64 bit extended size */
2478 a.size = avio_rb64(pb) - 8;
2482 a.size = atom.size - total_size;
2489 a.size = FFMIN(a.size, atom.size - total_size);
2491 for (i = 0; mov_default_parse_table[i].type; i++)
2492 if (mov_default_parse_table[i].type == a.type) {
2493 parse = mov_default_parse_table[i].parse;
2497 // container is user data
2498 if (!parse && (atom.type == MKTAG('u','d','t','a') ||
2499 atom.type == MKTAG('i','l','s','t')))
2500 parse = mov_read_udta_string;
2502 if (!parse) { /* skip leaf atoms data */
2503 avio_skip(pb, a.size);
2505 int64_t start_pos = avio_tell(pb);
2507 int err = parse(c, pb, a);
2510 if (c->found_moov && c->found_mdat &&
2511 ((!pb->seekable || c->fc->flags & AVFMT_FLAG_IGNIDX) ||
2512 start_pos + a.size == avio_size(pb))) {
2513 if (!pb->seekable || c->fc->flags & AVFMT_FLAG_IGNIDX)
2514 c->next_root_atom = start_pos + a.size;
2517 left = a.size - avio_tell(pb) + start_pos;
2518 if (left > 0) /* skip garbage at atom end */
2519 avio_skip(pb, left);
2522 total_size += a.size;
2525 if (total_size < atom.size && atom.size < 0x7ffff)
2526 avio_skip(pb, atom.size - total_size);
2531 static int mov_probe(AVProbeData *p)
2533 unsigned int offset;
2537 /* check file header */
2540 /* ignore invalid offset */
2541 if ((offset + 8) > (unsigned int)p->buf_size)
2543 tag = AV_RL32(p->buf + offset + 4);
2545 /* check for obvious tags */
2546 case MKTAG('j','P',' ',' '): /* jpeg 2000 signature */
2547 case MKTAG('m','o','o','v'):
2548 case MKTAG('m','d','a','t'):
2549 case MKTAG('p','n','o','t'): /* detect movs with preview pics like ew.mov and april.mov */
2550 case MKTAG('u','d','t','a'): /* Packet Video PVAuthor adds this and a lot of more junk */
2551 case MKTAG('f','t','y','p'):
2552 return AVPROBE_SCORE_MAX;
2553 /* those are more common words, so rate then a bit less */
2554 case MKTAG('e','d','i','w'): /* xdcam files have reverted first tags */
2555 case MKTAG('w','i','d','e'):
2556 case MKTAG('f','r','e','e'):
2557 case MKTAG('j','u','n','k'):
2558 case MKTAG('p','i','c','t'):
2559 return AVPROBE_SCORE_MAX - 5;
2560 case MKTAG(0x82,0x82,0x7f,0x7d):
2561 case MKTAG('s','k','i','p'):
2562 case MKTAG('u','u','i','d'):
2563 case MKTAG('p','r','f','l'):
2564 offset = AV_RB32(p->buf+offset) + offset;
2565 /* if we only find those cause probedata is too small at least rate them */
2566 score = AVPROBE_SCORE_MAX - 50;
2569 /* unrecognized tag */
2575 // must be done after parsing all trak because there's no order requirement
2576 static void mov_read_chapters(AVFormatContext *s)
2578 MOVContext *mov = s->priv_data;
2579 AVStream *st = NULL;
2580 MOVStreamContext *sc;
2584 for (i = 0; i < s->nb_streams; i++)
2585 if (s->streams[i]->id == mov->chapter_track) {
2590 av_log(s, AV_LOG_ERROR, "Referenced QT chapter track not found\n");
2594 st->discard = AVDISCARD_ALL;
2596 cur_pos = avio_tell(sc->pb);
2598 for (i = 0; i < st->nb_index_entries; i++) {
2599 AVIndexEntry *sample = &st->index_entries[i];
2600 int64_t end = i+1 < st->nb_index_entries ? st->index_entries[i+1].timestamp : st->duration;
2605 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
2606 av_log(s, AV_LOG_ERROR, "Chapter %d not found in file\n", i);
2610 // the first two bytes are the length of the title
2611 len = avio_rb16(sc->pb);
2612 if (len > sample->size-2)
2614 title_len = 2*len + 1;
2615 if (!(title = av_mallocz(title_len)))
2618 // The samples could theoretically be in any encoding if there's an encd
2619 // atom following, but in practice are only utf-8 or utf-16, distinguished
2620 // instead by the presence of a BOM
2624 ch = avio_rb16(sc->pb);
2626 avio_get_str16be(sc->pb, len, title, title_len);
2627 else if (ch == 0xfffe)
2628 avio_get_str16le(sc->pb, len, title, title_len);
2631 if (len == 1 || len == 2)
2634 avio_get_str(sc->pb, len - 2, title + 2, title_len - 2);
2638 avpriv_new_chapter(s, i, st->time_base, sample->timestamp, end, title);
2642 avio_seek(sc->pb, cur_pos, SEEK_SET);
2645 static int mov_read_close(AVFormatContext *s)
2647 MOVContext *mov = s->priv_data;
2650 for (i = 0; i < s->nb_streams; i++) {
2651 AVStream *st = s->streams[i];
2652 MOVStreamContext *sc = st->priv_data;
2654 av_freep(&sc->ctts_data);
2655 for (j = 0; j < sc->drefs_count; j++) {
2656 av_freep(&sc->drefs[j].path);
2657 av_freep(&sc->drefs[j].dir);
2659 av_freep(&sc->drefs);
2660 if (sc->pb && sc->pb != s->pb)
2664 if (mov->dv_demux) {
2665 for (i = 0; i < mov->dv_fctx->nb_streams; i++) {
2666 av_freep(&mov->dv_fctx->streams[i]->codec);
2667 av_freep(&mov->dv_fctx->streams[i]);
2669 av_freep(&mov->dv_fctx);
2670 av_freep(&mov->dv_demux);
2673 av_freep(&mov->trex_data);
2678 static int mov_read_header(AVFormatContext *s)
2680 MOVContext *mov = s->priv_data;
2681 AVIOContext *pb = s->pb;
2683 MOVAtom atom = { AV_RL32("root") };
2686 /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
2688 atom.size = avio_size(pb);
2690 atom.size = INT64_MAX;
2692 /* check MOV header */
2693 if ((err = mov_read_default(mov, pb, atom)) < 0) {
2694 av_log(s, AV_LOG_ERROR, "error reading header: %d\n", err);
2698 if (!mov->found_moov) {
2699 av_log(s, AV_LOG_ERROR, "moov atom not found\n");
2701 return AVERROR_INVALIDDATA;
2703 av_dlog(mov->fc, "on_parse_exit_offset=%"PRId64"\n", avio_tell(pb));
2705 if (pb->seekable && mov->chapter_track > 0)
2706 mov_read_chapters(s);
2708 if (mov->trex_data) {
2710 for (i = 0; i < s->nb_streams; i++) {
2711 AVStream *st = s->streams[i];
2712 MOVStreamContext *sc = st->priv_data;
2714 st->codec->bit_rate = sc->data_size * 8 * sc->time_scale / st->duration;
2721 static AVIndexEntry *mov_find_next_sample(AVFormatContext *s, AVStream **st)
2723 AVIndexEntry *sample = NULL;
2724 int64_t best_dts = INT64_MAX;
2726 for (i = 0; i < s->nb_streams; i++) {
2727 AVStream *avst = s->streams[i];
2728 MOVStreamContext *msc = avst->priv_data;
2729 if (msc->pb && msc->current_sample < avst->nb_index_entries) {
2730 AVIndexEntry *current_sample = &avst->index_entries[msc->current_sample];
2731 int64_t dts = av_rescale(current_sample->timestamp, AV_TIME_BASE, msc->time_scale);
2732 av_dlog(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
2733 if (!sample || (!s->pb->seekable && current_sample->pos < sample->pos) ||
2735 ((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb &&
2736 ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
2737 (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) {
2738 sample = current_sample;
2747 static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
2749 MOVContext *mov = s->priv_data;
2750 MOVStreamContext *sc;
2751 AVIndexEntry *sample;
2752 AVStream *st = NULL;
2755 sample = mov_find_next_sample(s, &st);
2757 mov->found_mdat = 0;
2758 if (!mov->next_root_atom)
2760 avio_seek(s->pb, mov->next_root_atom, SEEK_SET);
2761 mov->next_root_atom = 0;
2762 if (mov_read_default(mov, s->pb, (MOVAtom){ AV_RL32("root"), INT64_MAX }) < 0 ||
2765 av_dlog(s, "read fragments, offset 0x%"PRIx64"\n", avio_tell(s->pb));
2769 /* must be done just before reading, to avoid infinite loop on sample */
2770 sc->current_sample++;
2772 if (st->discard != AVDISCARD_ALL) {
2773 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
2774 av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
2775 sc->ffindex, sample->pos);
2776 return AVERROR_INVALIDDATA;
2778 ret = av_get_packet(sc->pb, pkt, sample->size);
2781 if (sc->has_palette) {
2784 pal = av_packet_new_side_data(pkt, AV_PKT_DATA_PALETTE, AVPALETTE_SIZE);
2786 av_log(mov->fc, AV_LOG_ERROR, "Cannot append palette to packet\n");
2788 memcpy(pal, sc->palette, AVPALETTE_SIZE);
2789 sc->has_palette = 0;
2792 #if CONFIG_DV_DEMUXER
2793 if (mov->dv_demux && sc->dv_audio_container) {
2794 avpriv_dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size);
2797 ret = avpriv_dv_get_packet(mov->dv_demux, pkt);
2804 pkt->stream_index = sc->ffindex;
2805 pkt->dts = sample->timestamp;
2806 if (sc->ctts_data && sc->ctts_index < sc->ctts_count) {
2807 pkt->pts = pkt->dts + sc->dts_shift + sc->ctts_data[sc->ctts_index].duration;
2808 /* update ctts context */
2810 if (sc->ctts_index < sc->ctts_count &&
2811 sc->ctts_data[sc->ctts_index].count == sc->ctts_sample) {
2813 sc->ctts_sample = 0;
2816 pkt->dts = AV_NOPTS_VALUE;
2818 int64_t next_dts = (sc->current_sample < st->nb_index_entries) ?
2819 st->index_entries[sc->current_sample].timestamp : st->duration;
2820 pkt->duration = next_dts - pkt->dts;
2821 pkt->pts = pkt->dts;
2823 if (st->discard == AVDISCARD_ALL)
2825 pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? AV_PKT_FLAG_KEY : 0;
2826 pkt->pos = sample->pos;
2827 av_dlog(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n",
2828 pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
2832 static int mov_seek_stream(AVFormatContext *s, AVStream *st, int64_t timestamp, int flags)
2834 MOVStreamContext *sc = st->priv_data;
2835 int sample, time_sample;
2838 sample = av_index_search_timestamp(st, timestamp, flags);
2839 av_dlog(s, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
2840 if (sample < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
2842 if (sample < 0) /* not sure what to do */
2843 return AVERROR_INVALIDDATA;
2844 sc->current_sample = sample;
2845 av_dlog(s, "stream %d, found sample %d\n", st->index, sc->current_sample);
2846 /* adjust ctts index */
2847 if (sc->ctts_data) {
2849 for (i = 0; i < sc->ctts_count; i++) {
2850 int next = time_sample + sc->ctts_data[i].count;
2851 if (next > sc->current_sample) {
2853 sc->ctts_sample = sc->current_sample - time_sample;
2862 static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
2865 int64_t seek_timestamp, timestamp;
2869 if (stream_index >= s->nb_streams)
2870 return AVERROR_INVALIDDATA;
2871 if (sample_time < 0)
2874 st = s->streams[stream_index];
2875 sample = mov_seek_stream(s, st, sample_time, flags);
2879 /* adjust seek timestamp to found sample timestamp */
2880 seek_timestamp = st->index_entries[sample].timestamp;
2882 for (i = 0; i < s->nb_streams; i++) {
2884 if (stream_index == i)
2887 timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
2888 mov_seek_stream(s, st, timestamp, flags);
2893 AVInputFormat ff_mov_demuxer = {
2894 .name = "mov,mp4,m4a,3gp,3g2,mj2",
2895 .long_name = NULL_IF_CONFIG_SMALL("QuickTime / MOV"),
2896 .priv_data_size = sizeof(MOVContext),
2897 .read_probe = mov_probe,
2898 .read_header = mov_read_header,
2899 .read_packet = mov_read_packet,
2900 .read_close = mov_read_close,
2901 .read_seek = mov_read_seek,