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
29 //#define MOV_EXPORT_ALL_METADATA
31 #include "libavutil/attributes.h"
32 #include "libavutil/channel_layout.h"
33 #include "libavutil/intreadwrite.h"
34 #include "libavutil/intfloat.h"
35 #include "libavutil/mathematics.h"
36 #include "libavutil/avstring.h"
37 #include "libavutil/dict.h"
38 #include "libavutil/opt.h"
39 #include "libavutil/timecode.h"
40 #include "libavcodec/ac3tab.h"
43 #include "avio_internal.h"
46 #include "libavcodec/get_bits.h"
54 #include "qtpalette.h"
60 /* those functions parse an atom */
61 /* links atom IDs to parse functions */
62 typedef struct MOVParseTableEntry {
64 int (*parse)(MOVContext *ctx, AVIOContext *pb, MOVAtom atom);
67 static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom);
69 static int mov_metadata_track_or_disc_number(MOVContext *c, AVIOContext *pb,
70 unsigned len, const char *key)
74 short current, total = 0;
75 avio_rb16(pb); // unknown
76 current = avio_rb16(pb);
78 total = avio_rb16(pb);
80 snprintf(buf, sizeof(buf), "%d", current);
82 snprintf(buf, sizeof(buf), "%d/%d", current, total);
83 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 int mov_read_custom_metadata(MOVContext *c, AVIOContext *pb, MOVAtom atom)
134 char key[1024]={0}, data[1024]={0};
137 MOVStreamContext *sc;
139 if (c->fc->nb_streams < 1)
141 st = c->fc->streams[c->fc->nb_streams-1];
144 if (atom.size <= 8) return 0;
146 for (i = 0; i < 3; i++) { // Parse up to three sub-atoms looking for name and data.
147 int data_size = avio_rb32(pb);
148 int tag = avio_rl32(pb);
149 int str_size = 0, skip_size = 0;
153 case MKTAG('n','a','m','e'):
154 avio_rb32(pb); // version/flags
155 str_size = skip_size = data_size - 12;
159 case MKTAG('d','a','t','a'):
160 avio_rb32(pb); // version/flags
161 avio_rb32(pb); // reserved (zero)
162 str_size = skip_size = data_size - 16;
167 skip_size = data_size - 8;
173 str_size = FFMIN3(sizeof(data)-1, str_size, atom.size);
174 avio_read(pb, target, str_size);
175 target[str_size] = 0;
177 atom.size -= skip_size;
179 // If we didn't read the full data chunk for the sub-atom, skip to the end of it.
180 if (skip_size > str_size) avio_skip(pb, skip_size - str_size);
184 if (strcmp(key, "iTunSMPB") == 0) {
185 int priming, remainder, samples;
186 if(sscanf(data, "%*X %X %X %X", &priming, &remainder, &samples) == 3){
187 if(priming>0 && priming<16384)
188 sc->start_pad = priming;
192 if (strcmp(key, "cdec") == 0) {
193 // av_dict_set(&st->metadata, key, data, 0);
200 static const uint32_t mac_to_unicode[128] = {
201 0x00C4,0x00C5,0x00C7,0x00C9,0x00D1,0x00D6,0x00DC,0x00E1,
202 0x00E0,0x00E2,0x00E4,0x00E3,0x00E5,0x00E7,0x00E9,0x00E8,
203 0x00EA,0x00EB,0x00ED,0x00EC,0x00EE,0x00EF,0x00F1,0x00F3,
204 0x00F2,0x00F4,0x00F6,0x00F5,0x00FA,0x00F9,0x00FB,0x00FC,
205 0x2020,0x00B0,0x00A2,0x00A3,0x00A7,0x2022,0x00B6,0x00DF,
206 0x00AE,0x00A9,0x2122,0x00B4,0x00A8,0x2260,0x00C6,0x00D8,
207 0x221E,0x00B1,0x2264,0x2265,0x00A5,0x00B5,0x2202,0x2211,
208 0x220F,0x03C0,0x222B,0x00AA,0x00BA,0x03A9,0x00E6,0x00F8,
209 0x00BF,0x00A1,0x00AC,0x221A,0x0192,0x2248,0x2206,0x00AB,
210 0x00BB,0x2026,0x00A0,0x00C0,0x00C3,0x00D5,0x0152,0x0153,
211 0x2013,0x2014,0x201C,0x201D,0x2018,0x2019,0x00F7,0x25CA,
212 0x00FF,0x0178,0x2044,0x20AC,0x2039,0x203A,0xFB01,0xFB02,
213 0x2021,0x00B7,0x201A,0x201E,0x2030,0x00C2,0x00CA,0x00C1,
214 0x00CB,0x00C8,0x00CD,0x00CE,0x00CF,0x00CC,0x00D3,0x00D4,
215 0xF8FF,0x00D2,0x00DA,0x00DB,0x00D9,0x0131,0x02C6,0x02DC,
216 0x00AF,0x02D8,0x02D9,0x02DA,0x00B8,0x02DD,0x02DB,0x02C7,
219 static int mov_read_mac_string(MOVContext *c, AVIOContext *pb, int len,
220 char *dst, int dstlen)
223 char *end = dst+dstlen-1;
226 for (i = 0; i < len; i++) {
227 uint8_t t, c = avio_r8(pb);
228 if (c < 0x80 && p < end)
231 PUT_UTF8(mac_to_unicode[c-0x80], t, if (p < end) *p++ = t;);
237 static int mov_read_covr(MOVContext *c, AVIOContext *pb, int type, int len)
241 MOVStreamContext *sc;
246 case 0xd: id = AV_CODEC_ID_MJPEG; break;
247 case 0xe: id = AV_CODEC_ID_PNG; break;
248 case 0x1b: id = AV_CODEC_ID_BMP; break;
250 av_log(c->fc, AV_LOG_WARNING, "Unknown cover type: 0x%x.\n", type);
255 st = avformat_new_stream(c->fc, NULL);
257 return AVERROR(ENOMEM);
258 sc = av_mallocz(sizeof(*sc));
260 return AVERROR(ENOMEM);
263 ret = av_get_packet(pb, &pkt, len);
267 st->disposition |= AV_DISPOSITION_ATTACHED_PIC;
269 st->attached_pic = pkt;
270 st->attached_pic.stream_index = st->index;
271 st->attached_pic.flags |= AV_PKT_FLAG_KEY;
273 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
274 st->codec->codec_id = id;
279 static int mov_metadata_raw(MOVContext *c, AVIOContext *pb,
280 unsigned len, const char *key)
282 char *value = av_malloc(len + 1);
284 return AVERROR(ENOMEM);
285 avio_read(pb, value, len);
287 return av_dict_set(&c->fc->metadata, key, value, AV_DICT_DONT_STRDUP_VAL);
290 static int mov_read_udta_string(MOVContext *c, AVIOContext *pb, MOVAtom atom)
292 #ifdef MOV_EXPORT_ALL_METADATA
295 char str[1024], key2[16], language[4] = {0};
296 const char *key = NULL;
297 uint16_t langcode = 0;
298 uint32_t data_type = 0, str_size;
299 int (*parse)(MOVContext*, AVIOContext*, unsigned, const char*) = NULL;
301 if (c->itunes_metadata && atom.type == MKTAG('-','-','-','-'))
302 return mov_read_custom_metadata(c, pb, atom);
305 case MKTAG(0xa9,'n','a','m'): key = "title"; break;
306 case MKTAG(0xa9,'a','u','t'):
307 case MKTAG(0xa9,'A','R','T'): key = "artist"; break;
308 case MKTAG( 'a','A','R','T'): key = "album_artist"; break;
309 case MKTAG(0xa9,'w','r','t'): key = "composer"; break;
310 case MKTAG( 'c','p','r','t'):
311 case MKTAG(0xa9,'c','p','y'): key = "copyright"; break;
312 case MKTAG(0xa9,'g','r','p'): key = "grouping"; break;
313 case MKTAG(0xa9,'l','y','r'): key = "lyrics"; break;
314 case MKTAG(0xa9,'c','m','t'):
315 case MKTAG(0xa9,'i','n','f'): key = "comment"; break;
316 case MKTAG(0xa9,'a','l','b'): key = "album"; break;
317 case MKTAG(0xa9,'d','a','y'): key = "date"; break;
318 case MKTAG(0xa9,'g','e','n'): key = "genre"; break;
319 case MKTAG( 'g','n','r','e'): key = "genre";
320 parse = mov_metadata_gnre; break;
321 case MKTAG(0xa9,'t','o','o'):
322 case MKTAG(0xa9,'s','w','r'): key = "encoder"; break;
323 case MKTAG(0xa9,'e','n','c'): key = "encoder"; break;
324 case MKTAG(0xa9,'m','a','k'): key = "make"; break;
325 case MKTAG(0xa9,'m','o','d'): key = "model"; break;
326 case MKTAG(0xa9,'x','y','z'): key = "location"; break;
327 case MKTAG( 'd','e','s','c'): key = "description";break;
328 case MKTAG( 'l','d','e','s'): key = "synopsis"; break;
329 case MKTAG( 't','v','s','h'): key = "show"; break;
330 case MKTAG( 't','v','e','n'): key = "episode_id";break;
331 case MKTAG( 't','v','n','n'): key = "network"; break;
332 case MKTAG( 't','r','k','n'): key = "track";
333 parse = mov_metadata_track_or_disc_number; break;
334 case MKTAG( 'd','i','s','k'): key = "disc";
335 parse = mov_metadata_track_or_disc_number; break;
336 case MKTAG( 't','v','e','s'): key = "episode_sort";
337 parse = mov_metadata_int8_bypass_padding; break;
338 case MKTAG( 't','v','s','n'): key = "season_number";
339 parse = mov_metadata_int8_bypass_padding; break;
340 case MKTAG( 's','t','i','k'): key = "media_type";
341 parse = mov_metadata_int8_no_padding; break;
342 case MKTAG( 'h','d','v','d'): key = "hd_video";
343 parse = mov_metadata_int8_no_padding; break;
344 case MKTAG( 'p','g','a','p'): key = "gapless_playback";
345 parse = mov_metadata_int8_no_padding; break;
346 case MKTAG( '@','P','R','M'):
347 return mov_metadata_raw(c, pb, atom.size, "premiere_version");
348 case MKTAG( '@','P','R','Q'):
349 return mov_metadata_raw(c, pb, atom.size, "quicktime_version");
352 if (c->itunes_metadata && atom.size > 8) {
353 int data_size = avio_rb32(pb);
354 int tag = avio_rl32(pb);
355 if (tag == MKTAG('d','a','t','a')) {
356 data_type = avio_rb32(pb); // type
357 avio_rb32(pb); // unknown
358 str_size = data_size - 16;
361 if (atom.type == MKTAG('c', 'o', 'v', 'r')) {
362 int ret = mov_read_covr(c, pb, data_type, str_size);
364 av_log(c->fc, AV_LOG_ERROR, "Error parsing cover art.\n");
369 } else if (atom.size > 4 && key && !c->itunes_metadata) {
370 str_size = avio_rb16(pb); // string length
371 langcode = avio_rb16(pb);
372 ff_mov_lang_to_iso639(langcode, language);
375 str_size = atom.size;
377 #ifdef MOV_EXPORT_ALL_METADATA
379 snprintf(tmp_key, 5, "%.4s", (char*)&atom.type);
387 return AVERROR_INVALIDDATA;
389 str_size = FFMIN3(sizeof(str)-1, str_size, atom.size);
392 parse(c, pb, str_size, key);
394 if (data_type == 3 || (data_type == 0 && (langcode < 0x400 || langcode == 0x7fff))) { // MAC Encoded
395 mov_read_mac_string(c, pb, str_size, str, sizeof(str));
397 int ret = avio_read(pb, str, str_size);
399 return ret < 0 ? ret : AVERROR_INVALIDDATA;
402 av_dict_set(&c->fc->metadata, key, str, 0);
403 if (*language && strcmp(language, "und")) {
404 snprintf(key2, sizeof(key2), "%s-%s", key, language);
405 av_dict_set(&c->fc->metadata, key2, str, 0);
408 av_dlog(c->fc, "lang \"%3s\" ", language);
409 av_dlog(c->fc, "tag \"%s\" value \"%s\" atom \"%.4s\" %d %"PRId64"\n",
410 key, str, (char*)&atom.type, str_size, atom.size);
415 static int mov_read_chpl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
418 int i, nb_chapters, str_len, version;
421 if ((atom.size -= 5) < 0)
424 version = avio_r8(pb);
427 avio_rb32(pb); // ???
428 nb_chapters = avio_r8(pb);
430 for (i = 0; i < nb_chapters; i++) {
434 start = avio_rb64(pb);
435 str_len = avio_r8(pb);
437 if ((atom.size -= 9+str_len) < 0)
440 avio_read(pb, str, str_len);
442 avpriv_new_chapter(c->fc, i, (AVRational){1,10000000}, start, AV_NOPTS_VALUE, str);
447 #define MIN_DATA_ENTRY_BOX_SIZE 12
448 static int mov_read_dref(MOVContext *c, AVIOContext *pb, MOVAtom atom)
451 MOVStreamContext *sc;
454 if (c->fc->nb_streams < 1)
456 st = c->fc->streams[c->fc->nb_streams-1];
459 avio_rb32(pb); // version + flags
460 entries = avio_rb32(pb);
461 if (entries > (atom.size - 1) / MIN_DATA_ENTRY_BOX_SIZE + 1 ||
462 entries >= UINT_MAX / sizeof(*sc->drefs))
463 return AVERROR_INVALIDDATA;
466 sc->drefs = av_mallocz(entries * sizeof(*sc->drefs));
468 return AVERROR(ENOMEM);
469 sc->drefs_count = entries;
471 for (i = 0; i < sc->drefs_count; i++) {
472 MOVDref *dref = &sc->drefs[i];
473 uint32_t size = avio_rb32(pb);
474 int64_t next = avio_tell(pb) + size - 4;
477 return AVERROR_INVALIDDATA;
479 dref->type = avio_rl32(pb);
480 avio_rb32(pb); // version + flags
481 av_dlog(c->fc, "type %.4s size %d\n", (char*)&dref->type, size);
483 if (dref->type == MKTAG('a','l','i','s') && size > 150) {
484 /* macintosh alias record */
485 uint16_t volume_len, len;
490 volume_len = avio_r8(pb);
491 volume_len = FFMIN(volume_len, 27);
492 avio_read(pb, dref->volume, 27);
493 dref->volume[volume_len] = 0;
494 av_log(c->fc, AV_LOG_DEBUG, "volume %s, len %d\n", dref->volume, volume_len);
499 len = FFMIN(len, 63);
500 avio_read(pb, dref->filename, 63);
501 dref->filename[len] = 0;
502 av_log(c->fc, AV_LOG_DEBUG, "filename %s, len %d\n", dref->filename, len);
506 /* read next level up_from_alias/down_to_target */
507 dref->nlvl_from = avio_rb16(pb);
508 dref->nlvl_to = avio_rb16(pb);
509 av_log(c->fc, AV_LOG_DEBUG, "nlvl from %d, nlvl to %d\n",
510 dref->nlvl_from, dref->nlvl_to);
514 for (type = 0; type != -1 && avio_tell(pb) < next; ) {
517 type = avio_rb16(pb);
519 av_log(c->fc, AV_LOG_DEBUG, "type %d, len %d\n", type, len);
522 if (type == 2) { // absolute path
524 dref->path = av_mallocz(len+1);
526 return AVERROR(ENOMEM);
527 avio_read(pb, dref->path, len);
528 if (len > volume_len && !strncmp(dref->path, dref->volume, volume_len)) {
530 memmove(dref->path, dref->path+volume_len, len);
533 for (j = 0; j < len; j++)
534 if (dref->path[j] == ':')
536 av_log(c->fc, AV_LOG_DEBUG, "path %s\n", dref->path);
537 } else if (type == 0) { // directory name
539 dref->dir = av_malloc(len+1);
541 return AVERROR(ENOMEM);
542 if (avio_read(pb, dref->dir, len) != len)
543 return AVERROR_INVALIDDATA;
545 for (j = 0; j < len; j++)
546 if (dref->dir[j] == ':')
548 av_log(c->fc, AV_LOG_DEBUG, "dir %s\n", dref->dir);
553 avio_seek(pb, next, SEEK_SET);
558 static int mov_read_hdlr(MOVContext *c, AVIOContext *pb, MOVAtom atom)
562 uint32_t av_unused ctype;
566 if (c->fc->nb_streams < 1) // meta before first trak
569 st = c->fc->streams[c->fc->nb_streams-1];
571 avio_r8(pb); /* version */
572 avio_rb24(pb); /* flags */
575 ctype = avio_rl32(pb);
576 type = avio_rl32(pb); /* component subtype */
578 av_dlog(c->fc, "ctype= %.4s (0x%08x)\n", (char*)&ctype, ctype);
579 av_dlog(c->fc, "stype= %.4s\n", (char*)&type);
581 if (type == MKTAG('v','i','d','e'))
582 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
583 else if (type == MKTAG('s','o','u','n'))
584 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
585 else if (type == MKTAG('m','1','a',' '))
586 st->codec->codec_id = AV_CODEC_ID_MP2;
587 else if ((type == MKTAG('s','u','b','p')) || (type == MKTAG('c','l','c','p')))
588 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
590 avio_rb32(pb); /* component manufacture */
591 avio_rb32(pb); /* component flags */
592 avio_rb32(pb); /* component flags mask */
594 title_size = atom.size - 24;
595 if (title_size > 0) {
596 title_str = av_malloc(title_size + 1); /* Add null terminator */
598 return AVERROR(ENOMEM);
599 avio_read(pb, title_str, title_size);
600 title_str[title_size] = 0;
602 av_dict_set(&st->metadata, "handler_name", title_str +
603 (!c->isom && title_str[0] == title_size - 1), 0);
604 av_freep(&title_str);
610 int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb, MOVAtom atom)
615 if (fc->nb_streams < 1)
617 st = fc->streams[fc->nb_streams-1];
619 avio_rb32(pb); /* version + flags */
620 ff_mp4_read_descr(fc, pb, &tag);
621 if (tag == MP4ESDescrTag) {
622 ff_mp4_parse_es_descr(pb, NULL);
624 avio_rb16(pb); /* ID */
626 ff_mp4_read_descr(fc, pb, &tag);
627 if (tag == MP4DecConfigDescrTag)
628 ff_mp4_read_dec_config_descr(fc, st, pb);
632 static int mov_read_esds(MOVContext *c, AVIOContext *pb, MOVAtom atom)
634 return ff_mov_read_esds(c->fc, pb, atom);
637 static int mov_read_dac3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
640 int ac3info, acmod, lfeon, bsmod;
642 if (c->fc->nb_streams < 1)
644 st = c->fc->streams[c->fc->nb_streams-1];
646 ac3info = avio_rb24(pb);
647 bsmod = (ac3info >> 14) & 0x7;
648 acmod = (ac3info >> 11) & 0x7;
649 lfeon = (ac3info >> 10) & 0x1;
650 st->codec->channels = ((int[]){2,1,2,3,3,4,4,5})[acmod] + lfeon;
651 st->codec->channel_layout = avpriv_ac3_channel_layout_tab[acmod];
653 st->codec->channel_layout |= AV_CH_LOW_FREQUENCY;
654 st->codec->audio_service_type = bsmod;
655 if (st->codec->channels > 1 && bsmod == 0x7)
656 st->codec->audio_service_type = AV_AUDIO_SERVICE_TYPE_KARAOKE;
661 static int mov_read_dec3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
664 int eac3info, acmod, lfeon, bsmod;
666 if (c->fc->nb_streams < 1)
668 st = c->fc->streams[c->fc->nb_streams-1];
670 /* No need to parse fields for additional independent substreams and its
671 * associated dependent substreams since libavcodec's E-AC-3 decoder
672 * does not support them yet. */
673 avio_rb16(pb); /* data_rate and num_ind_sub */
674 eac3info = avio_rb24(pb);
675 bsmod = (eac3info >> 12) & 0x1f;
676 acmod = (eac3info >> 9) & 0x7;
677 lfeon = (eac3info >> 8) & 0x1;
678 st->codec->channel_layout = avpriv_ac3_channel_layout_tab[acmod];
680 st->codec->channel_layout |= AV_CH_LOW_FREQUENCY;
681 st->codec->channels = av_get_channel_layout_nb_channels(st->codec->channel_layout);
682 st->codec->audio_service_type = bsmod;
683 if (st->codec->channels > 1 && bsmod == 0x7)
684 st->codec->audio_service_type = AV_AUDIO_SERVICE_TYPE_KARAOKE;
689 static int mov_read_chan(MOVContext *c, AVIOContext *pb, MOVAtom atom)
693 if (c->fc->nb_streams < 1)
695 st = c->fc->streams[c->fc->nb_streams-1];
700 /* skip version and flags */
703 ff_mov_read_chan(c->fc, pb, st, atom.size - 4);
708 static int mov_read_wfex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
712 if (c->fc->nb_streams < 1)
714 st = c->fc->streams[c->fc->nb_streams-1];
716 if (ff_get_wav_header(pb, st->codec, atom.size) < 0) {
717 av_log(c->fc, AV_LOG_WARNING, "get_wav_header failed\n");
723 static int mov_read_pasp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
725 const int num = avio_rb32(pb);
726 const int den = avio_rb32(pb);
729 if (c->fc->nb_streams < 1)
731 st = c->fc->streams[c->fc->nb_streams-1];
733 if ((st->sample_aspect_ratio.den != 1 || st->sample_aspect_ratio.num) && // default
734 (den != st->sample_aspect_ratio.den || num != st->sample_aspect_ratio.num)) {
735 av_log(c->fc, AV_LOG_WARNING,
736 "sample aspect ratio already set to %d:%d, ignoring 'pasp' atom (%d:%d)\n",
737 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
739 } else if (den != 0) {
740 st->sample_aspect_ratio.num = num;
741 st->sample_aspect_ratio.den = den;
746 /* this atom contains actual media data */
747 static int mov_read_mdat(MOVContext *c, AVIOContext *pb, MOVAtom atom)
749 if (atom.size == 0) /* wrong one (MP4) */
752 return 0; /* now go for moov */
755 /* read major brand, minor version and compatible brands and store them as metadata */
756 static int mov_read_ftyp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
760 char minor_ver_str[11]; /* 32 bit integer -> 10 digits + null */
761 char* comp_brands_str;
762 uint8_t type[5] = {0};
764 avio_read(pb, type, 4);
765 if (strcmp(type, "qt "))
767 av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
768 av_dict_set(&c->fc->metadata, "major_brand", type, 0);
769 minor_ver = avio_rb32(pb); /* minor version */
770 snprintf(minor_ver_str, sizeof(minor_ver_str), "%d", minor_ver);
771 av_dict_set(&c->fc->metadata, "minor_version", minor_ver_str, 0);
773 comp_brand_size = atom.size - 8;
774 if (comp_brand_size < 0)
775 return AVERROR_INVALIDDATA;
776 comp_brands_str = av_malloc(comp_brand_size + 1); /* Add null terminator */
777 if (!comp_brands_str)
778 return AVERROR(ENOMEM);
779 avio_read(pb, comp_brands_str, comp_brand_size);
780 comp_brands_str[comp_brand_size] = 0;
781 av_dict_set(&c->fc->metadata, "compatible_brands", comp_brands_str, 0);
782 av_freep(&comp_brands_str);
787 /* this atom should contain all header atoms */
788 static int mov_read_moov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
793 av_log(c->fc, AV_LOG_WARNING, "Found duplicated MOOV Atom. Skipped it\n");
794 avio_skip(pb, atom.size);
798 if ((ret = mov_read_default(c, pb, atom)) < 0)
800 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
801 /* so we don't parse the whole file if over a network */
803 return 0; /* now go for mdat */
806 static int mov_read_moof(MOVContext *c, AVIOContext *pb, MOVAtom atom)
808 c->fragment.moof_offset = avio_tell(pb) - 8;
809 av_dlog(c->fc, "moof offset %"PRIx64"\n", c->fragment.moof_offset);
810 return mov_read_default(c, pb, atom);
813 static void mov_metadata_creation_time(AVDictionary **metadata, int64_t time)
819 if(time >= 2082844800)
820 time -= 2082844800; /* seconds between 1904-01-01 and Epoch */
822 ptm = gmtime(&timet);
824 strftime(buffer, sizeof(buffer), "%Y-%m-%d %H:%M:%S", ptm);
825 av_dict_set(metadata, "creation_time", buffer, 0);
829 static int mov_read_mdhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
832 MOVStreamContext *sc;
834 char language[4] = {0};
836 int64_t creation_time;
838 if (c->fc->nb_streams < 1)
840 st = c->fc->streams[c->fc->nb_streams-1];
843 if (sc->time_scale) {
844 av_log(c->fc, AV_LOG_ERROR, "Multiple mdhd?\n");
845 return AVERROR_INVALIDDATA;
848 version = avio_r8(pb);
850 avpriv_request_sample(c->fc, "Version %d", version);
851 return AVERROR_PATCHWELCOME;
853 avio_rb24(pb); /* flags */
855 creation_time = avio_rb64(pb);
858 creation_time = avio_rb32(pb);
859 avio_rb32(pb); /* modification time */
861 mov_metadata_creation_time(&st->metadata, creation_time);
863 sc->time_scale = avio_rb32(pb);
864 st->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
866 lang = avio_rb16(pb); /* language */
867 if (ff_mov_lang_to_iso639(lang, language))
868 av_dict_set(&st->metadata, "language", language, 0);
869 avio_rb16(pb); /* quality */
874 static int mov_read_mvhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
876 int64_t creation_time;
877 int version = avio_r8(pb); /* version */
878 avio_rb24(pb); /* flags */
881 creation_time = avio_rb64(pb);
884 creation_time = avio_rb32(pb);
885 avio_rb32(pb); /* modification time */
887 mov_metadata_creation_time(&c->fc->metadata, creation_time);
888 c->time_scale = avio_rb32(pb); /* time scale */
890 av_dlog(c->fc, "time scale = %i\n", c->time_scale);
892 c->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
893 // set the AVCodecContext duration because the duration of individual tracks
895 if (c->time_scale > 0 && !c->trex_data)
896 c->fc->duration = av_rescale(c->duration, AV_TIME_BASE, c->time_scale);
897 avio_rb32(pb); /* preferred scale */
899 avio_rb16(pb); /* preferred volume */
901 avio_skip(pb, 10); /* reserved */
903 avio_skip(pb, 36); /* display matrix */
905 avio_rb32(pb); /* preview time */
906 avio_rb32(pb); /* preview duration */
907 avio_rb32(pb); /* poster time */
908 avio_rb32(pb); /* selection time */
909 avio_rb32(pb); /* selection duration */
910 avio_rb32(pb); /* current time */
911 avio_rb32(pb); /* next track ID */
915 static int mov_read_enda(MOVContext *c, AVIOContext *pb, MOVAtom atom)
920 if (c->fc->nb_streams < 1)
922 st = c->fc->streams[c->fc->nb_streams-1];
924 little_endian = avio_rb16(pb) & 0xFF;
925 av_dlog(c->fc, "enda %d\n", little_endian);
926 if (little_endian == 1) {
927 switch (st->codec->codec_id) {
928 case AV_CODEC_ID_PCM_S24BE:
929 st->codec->codec_id = AV_CODEC_ID_PCM_S24LE;
931 case AV_CODEC_ID_PCM_S32BE:
932 st->codec->codec_id = AV_CODEC_ID_PCM_S32LE;
934 case AV_CODEC_ID_PCM_F32BE:
935 st->codec->codec_id = AV_CODEC_ID_PCM_F32LE;
937 case AV_CODEC_ID_PCM_F64BE:
938 st->codec->codec_id = AV_CODEC_ID_PCM_F64LE;
947 static int mov_read_fiel(MOVContext *c, AVIOContext *pb, MOVAtom atom)
950 unsigned mov_field_order;
951 enum AVFieldOrder decoded_field_order = AV_FIELD_UNKNOWN;
953 if (c->fc->nb_streams < 1) // will happen with jp2 files
955 st = c->fc->streams[c->fc->nb_streams-1];
957 return AVERROR_INVALIDDATA;
958 mov_field_order = avio_rb16(pb);
959 if ((mov_field_order & 0xFF00) == 0x0100)
960 decoded_field_order = AV_FIELD_PROGRESSIVE;
961 else if ((mov_field_order & 0xFF00) == 0x0200) {
962 switch (mov_field_order & 0xFF) {
963 case 0x01: decoded_field_order = AV_FIELD_TT;
965 case 0x06: decoded_field_order = AV_FIELD_BB;
967 case 0x09: decoded_field_order = AV_FIELD_TB;
969 case 0x0E: decoded_field_order = AV_FIELD_BT;
973 if (decoded_field_order == AV_FIELD_UNKNOWN && mov_field_order) {
974 av_log(NULL, AV_LOG_ERROR, "Unknown MOV field order 0x%04x\n", mov_field_order);
976 st->codec->field_order = decoded_field_order;
981 /* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
982 static int mov_read_extradata(MOVContext *c, AVIOContext *pb, MOVAtom atom,
983 enum AVCodecID codec_id)
990 if (c->fc->nb_streams < 1) // will happen with jp2 files
992 st= c->fc->streams[c->fc->nb_streams-1];
994 if (st->codec->codec_id != codec_id)
995 return 0; /* unexpected codec_id - don't mess with extradata */
997 size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
998 if (size > INT_MAX || (uint64_t)atom.size > INT_MAX)
999 return AVERROR_INVALIDDATA;
1000 if ((err = av_reallocp(&st->codec->extradata, size)) < 0) {
1001 st->codec->extradata_size = 0;
1004 buf = st->codec->extradata + st->codec->extradata_size;
1005 st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE;
1006 AV_WB32( buf , atom.size + 8);
1007 AV_WL32( buf + 4, atom.type);
1008 err = avio_read(pb, buf + 8, atom.size);
1011 } else if (err < atom.size) {
1012 av_log(c->fc, AV_LOG_WARNING, "truncated extradata\n");
1013 st->codec->extradata_size -= atom.size - err;
1015 memset(buf + 8 + err, 0, FF_INPUT_BUFFER_PADDING_SIZE);
1019 /* wrapper functions for reading ALAC/AVS/MJPEG/MJPEG2000 extradata atoms only for those codecs */
1020 static int mov_read_alac(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1022 return mov_read_extradata(c, pb, atom, AV_CODEC_ID_ALAC);
1025 static int mov_read_avss(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1027 return mov_read_extradata(c, pb, atom, AV_CODEC_ID_AVS);
1030 static int mov_read_jp2h(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1032 return mov_read_extradata(c, pb, atom, AV_CODEC_ID_JPEG2000);
1035 static int mov_read_avid(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1037 return mov_read_extradata(c, pb, atom, AV_CODEC_ID_AVUI);
1040 static int mov_read_targa_y216(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1042 int ret = mov_read_extradata(c, pb, atom, AV_CODEC_ID_TARGA_Y216);
1044 if (!ret && c->fc->nb_streams >= 1) {
1045 AVCodecContext *avctx = c->fc->streams[c->fc->nb_streams-1]->codec;
1046 if (avctx->extradata_size >= 40) {
1047 avctx->height = AV_RB16(&avctx->extradata[36]);
1048 avctx->width = AV_RB16(&avctx->extradata[38]);
1054 static int mov_read_ares(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1056 if (c->fc->nb_streams >= 1) {
1057 AVCodecContext *codec = c->fc->streams[c->fc->nb_streams-1]->codec;
1058 if (codec->codec_tag == MKTAG('A', 'V', 'i', 'n') &&
1059 codec->codec_id == AV_CODEC_ID_H264 &&
1062 /* For AVID AVCI50, force width of 1440 to be able to select the correct SPS and PPS */
1063 if (avio_rb16(pb) == 0xd4d)
1064 codec->width = 1440;
1069 return mov_read_avid(c, pb, atom);
1072 static int mov_read_svq3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1074 return mov_read_extradata(c, pb, atom, AV_CODEC_ID_SVQ3);
1077 static int mov_read_wave(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1081 if (c->fc->nb_streams < 1)
1083 st = c->fc->streams[c->fc->nb_streams-1];
1085 if ((uint64_t)atom.size > (1<<30))
1086 return AVERROR_INVALIDDATA;
1088 if (st->codec->codec_id == AV_CODEC_ID_QDM2 ||
1089 st->codec->codec_id == AV_CODEC_ID_QDMC ||
1090 st->codec->codec_id == AV_CODEC_ID_SPEEX) {
1091 // pass all frma atom to codec, needed at least for QDMC and QDM2
1092 av_free(st->codec->extradata);
1093 if (ff_get_extradata(st->codec, pb, atom.size) < 0)
1094 return AVERROR(ENOMEM);
1095 } else if (atom.size > 8) { /* to read frma, esds atoms */
1097 if ((ret = mov_read_default(c, pb, atom)) < 0)
1100 avio_skip(pb, atom.size);
1105 * This function reads atom content and puts data in extradata without tag
1106 * nor size unlike mov_read_extradata.
1108 static int mov_read_glbl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1112 if (c->fc->nb_streams < 1)
1114 st = c->fc->streams[c->fc->nb_streams-1];
1116 if ((uint64_t)atom.size > (1<<30))
1117 return AVERROR_INVALIDDATA;
1119 if (atom.size >= 10) {
1120 // Broken files created by legacy versions of libavformat will
1121 // wrap a whole fiel atom inside of a glbl atom.
1122 unsigned size = avio_rb32(pb);
1123 unsigned type = avio_rl32(pb);
1124 avio_seek(pb, -8, SEEK_CUR);
1125 if (type == MKTAG('f','i','e','l') && size == atom.size)
1126 return mov_read_default(c, pb, atom);
1128 av_free(st->codec->extradata);
1129 if (ff_get_extradata(st->codec, pb, atom.size) < 0)
1130 return AVERROR(ENOMEM);
1135 static int mov_read_dvc1(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1138 uint8_t profile_level;
1141 if (c->fc->nb_streams < 1)
1143 st = c->fc->streams[c->fc->nb_streams-1];
1145 if (atom.size >= (1<<28) || atom.size < 7)
1146 return AVERROR_INVALIDDATA;
1148 profile_level = avio_r8(pb);
1149 if ((profile_level & 0xf0) != 0xc0)
1152 avio_seek(pb, 6, SEEK_CUR);
1153 av_free(st->codec->extradata);
1154 if ((ret = ff_get_extradata(st->codec, pb, atom.size - 7)) < 0)
1161 * An strf atom is a BITMAPINFOHEADER struct. This struct is 40 bytes itself,
1162 * but can have extradata appended at the end after the 40 bytes belonging
1165 static int mov_read_strf(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1169 if (c->fc->nb_streams < 1)
1171 if (atom.size <= 40)
1173 st = c->fc->streams[c->fc->nb_streams-1];
1175 if ((uint64_t)atom.size > (1<<30))
1176 return AVERROR_INVALIDDATA;
1179 av_free(st->codec->extradata);
1180 if (ff_get_extradata(st->codec, pb, atom.size - 40) < 0)
1181 return AVERROR(ENOMEM);
1185 static int mov_read_stco(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1188 MOVStreamContext *sc;
1189 unsigned int i, entries;
1191 if (c->fc->nb_streams < 1)
1193 st = c->fc->streams[c->fc->nb_streams-1];
1196 avio_r8(pb); /* version */
1197 avio_rb24(pb); /* flags */
1199 entries = avio_rb32(pb);
1203 if (entries >= UINT_MAX/sizeof(int64_t))
1204 return AVERROR_INVALIDDATA;
1206 sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
1207 if (!sc->chunk_offsets)
1208 return AVERROR(ENOMEM);
1209 sc->chunk_count = entries;
1211 if (atom.type == MKTAG('s','t','c','o'))
1212 for (i = 0; i < entries && !pb->eof_reached; i++)
1213 sc->chunk_offsets[i] = avio_rb32(pb);
1214 else if (atom.type == MKTAG('c','o','6','4'))
1215 for (i = 0; i < entries && !pb->eof_reached; i++)
1216 sc->chunk_offsets[i] = avio_rb64(pb);
1218 return AVERROR_INVALIDDATA;
1220 sc->chunk_count = i;
1222 if (pb->eof_reached)
1229 * Compute codec id for 'lpcm' tag.
1230 * See CoreAudioTypes and AudioStreamBasicDescription at Apple.
1232 enum AVCodecID ff_mov_get_lpcm_codec_id(int bps, int flags)
1239 return ff_get_pcm_codec_id(bps, flags & 1, flags & 2, flags & 4 ? -1 : 0);
1242 static int mov_codec_id(AVStream *st, uint32_t format)
1244 int id = ff_codec_get_id(ff_codec_movaudio_tags, format);
1247 ((format & 0xFFFF) == 'm' + ('s' << 8) ||
1248 (format & 0xFFFF) == 'T' + ('S' << 8)))
1249 id = ff_codec_get_id(ff_codec_wav_tags, av_bswap32(format) & 0xFFFF);
1251 if (st->codec->codec_type != AVMEDIA_TYPE_VIDEO && id > 0) {
1252 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
1253 } else if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO &&
1254 /* skip old asf mpeg4 tag */
1255 format && format != MKTAG('m','p','4','s')) {
1256 id = ff_codec_get_id(ff_codec_movvideo_tags, format);
1258 id = ff_codec_get_id(ff_codec_bmp_tags, format);
1260 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
1261 else if (st->codec->codec_type == AVMEDIA_TYPE_DATA ||
1262 (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE &&
1263 st->codec->codec_id == AV_CODEC_ID_NONE)) {
1264 id = ff_codec_get_id(ff_codec_movsubtitle_tags, format);
1266 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
1270 st->codec->codec_tag = format;
1275 static void mov_parse_stsd_video(MOVContext *c, AVIOContext *pb,
1276 AVStream *st, MOVStreamContext *sc)
1278 unsigned int color_depth, len, j;
1279 int color_greyscale;
1282 avio_rb16(pb); /* version */
1283 avio_rb16(pb); /* revision level */
1284 avio_rb32(pb); /* vendor */
1285 avio_rb32(pb); /* temporal quality */
1286 avio_rb32(pb); /* spatial quality */
1288 st->codec->width = avio_rb16(pb); /* width */
1289 st->codec->height = avio_rb16(pb); /* height */
1291 avio_rb32(pb); /* horiz resolution */
1292 avio_rb32(pb); /* vert resolution */
1293 avio_rb32(pb); /* data size, always 0 */
1294 avio_rb16(pb); /* frames per samples */
1296 len = avio_r8(pb); /* codec name, pascal string */
1299 mov_read_mac_string(c, pb, len, st->codec->codec_name, 32);
1301 avio_skip(pb, 31 - len);
1302 /* codec_tag YV12 triggers an UV swap in rawdec.c */
1303 if (!memcmp(st->codec->codec_name, "Planar Y'CbCr 8-bit 4:2:0", 25)) {
1304 st->codec->codec_tag = MKTAG('I', '4', '2', '0');
1305 st->codec->width &= ~1;
1306 st->codec->height &= ~1;
1308 /* Flash Media Server uses tag H263 with Sorenson Spark */
1309 if (st->codec->codec_tag == MKTAG('H','2','6','3') &&
1310 !memcmp(st->codec->codec_name, "Sorenson H263", 13))
1311 st->codec->codec_id = AV_CODEC_ID_FLV1;
1313 st->codec->bits_per_coded_sample = avio_rb16(pb); /* depth */
1314 color_table_id = avio_rb16(pb); /* colortable id */
1315 av_dlog(c->fc, "depth %d, ctab id %d\n",
1316 st->codec->bits_per_coded_sample, color_table_id);
1317 /* figure out the palette situation */
1318 color_depth = st->codec->bits_per_coded_sample & 0x1F;
1319 color_greyscale = st->codec->bits_per_coded_sample & 0x20;
1320 /* Do not create a greyscale palette for cinepak */
1321 if (color_greyscale && st->codec->codec_id == AV_CODEC_ID_CINEPAK)
1324 /* if the depth is 2, 4, or 8 bpp, file is palettized */
1325 if ((color_depth == 2) || (color_depth == 4) || (color_depth == 8)) {
1326 /* for palette traversal */
1327 unsigned int color_start, color_count, color_end;
1328 unsigned char a, r, g, b;
1330 if (color_greyscale) {
1331 int color_index, color_dec;
1332 /* compute the greyscale palette */
1333 color_count = 1 << color_depth;
1335 color_dec = 256 / (color_count - 1);
1336 for (j = 0; j < color_count; j++) {
1337 r = g = b = color_index;
1338 sc->palette[j] = (0xFFU << 24) | (r << 16) | (g << 8) | (b);
1339 color_index -= color_dec;
1340 if (color_index < 0)
1343 } else if (color_table_id) {
1344 const uint8_t *color_table;
1345 /* if flag bit 3 is set, use the default palette */
1346 color_count = 1 << color_depth;
1347 if (color_depth == 2)
1348 color_table = ff_qt_default_palette_4;
1349 else if (color_depth == 4)
1350 color_table = ff_qt_default_palette_16;
1352 color_table = ff_qt_default_palette_256;
1354 for (j = 0; j < color_count; j++) {
1355 r = color_table[j * 3 + 0];
1356 g = color_table[j * 3 + 1];
1357 b = color_table[j * 3 + 2];
1358 sc->palette[j] = (0xFFU << 24) | (r << 16) | (g << 8) | (b);
1361 /* load the palette from the file */
1362 color_start = avio_rb32(pb);
1363 color_count = avio_rb16(pb);
1364 color_end = avio_rb16(pb);
1365 if ((color_start <= 255) && (color_end <= 255)) {
1366 for (j = color_start; j <= color_end; j++) {
1367 /* each A, R, G, or B component is 16 bits;
1368 * only use the top 8 bits */
1377 sc->palette[j] = (a << 24 ) | (r << 16) | (g << 8) | (b);
1381 sc->has_palette = 1;
1385 static void mov_parse_stsd_audio(MOVContext *c, AVIOContext *pb,
1386 AVStream *st, MOVStreamContext *sc)
1388 int bits_per_sample, flags;
1389 uint16_t version = avio_rb16(pb);
1390 AVDictionaryEntry *compatible_brands = av_dict_get(c->fc->metadata, "compatible_brands", NULL, AV_DICT_MATCH_CASE);
1392 avio_rb16(pb); /* revision level */
1393 avio_rb32(pb); /* vendor */
1395 st->codec->channels = avio_rb16(pb); /* channel count */
1396 st->codec->bits_per_coded_sample = avio_rb16(pb); /* sample size */
1397 av_dlog(c->fc, "audio channels %d\n", st->codec->channels);
1399 sc->audio_cid = avio_rb16(pb);
1400 avio_rb16(pb); /* packet size = 0 */
1402 st->codec->sample_rate = ((avio_rb32(pb) >> 16));
1404 // Read QT version 1 fields. In version 0 these do not exist.
1405 av_dlog(c->fc, "version =%d, isom =%d\n", version, c->isom);
1407 (compatible_brands && strstr(compatible_brands->value, "qt "))) {
1410 sc->samples_per_frame = avio_rb32(pb);
1411 avio_rb32(pb); /* bytes per packet */
1412 sc->bytes_per_frame = avio_rb32(pb);
1413 avio_rb32(pb); /* bytes per sample */
1414 } else if (version == 2) {
1415 avio_rb32(pb); /* sizeof struct only */
1416 st->codec->sample_rate = av_int2double(avio_rb64(pb));
1417 st->codec->channels = avio_rb32(pb);
1418 avio_rb32(pb); /* always 0x7F000000 */
1419 st->codec->bits_per_coded_sample = avio_rb32(pb);
1421 flags = avio_rb32(pb); /* lpcm format specific flag */
1422 sc->bytes_per_frame = avio_rb32(pb);
1423 sc->samples_per_frame = avio_rb32(pb);
1424 if (st->codec->codec_tag == MKTAG('l','p','c','m'))
1425 st->codec->codec_id =
1426 ff_mov_get_lpcm_codec_id(st->codec->bits_per_coded_sample,
1431 switch (st->codec->codec_id) {
1432 case AV_CODEC_ID_PCM_S8:
1433 case AV_CODEC_ID_PCM_U8:
1434 if (st->codec->bits_per_coded_sample == 16)
1435 st->codec->codec_id = AV_CODEC_ID_PCM_S16BE;
1437 case AV_CODEC_ID_PCM_S16LE:
1438 case AV_CODEC_ID_PCM_S16BE:
1439 if (st->codec->bits_per_coded_sample == 8)
1440 st->codec->codec_id = AV_CODEC_ID_PCM_S8;
1441 else if (st->codec->bits_per_coded_sample == 24)
1442 st->codec->codec_id =
1443 st->codec->codec_id == AV_CODEC_ID_PCM_S16BE ?
1444 AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE;
1446 /* set values for old format before stsd version 1 appeared */
1447 case AV_CODEC_ID_MACE3:
1448 sc->samples_per_frame = 6;
1449 sc->bytes_per_frame = 2 * st->codec->channels;
1451 case AV_CODEC_ID_MACE6:
1452 sc->samples_per_frame = 6;
1453 sc->bytes_per_frame = 1 * st->codec->channels;
1455 case AV_CODEC_ID_ADPCM_IMA_QT:
1456 sc->samples_per_frame = 64;
1457 sc->bytes_per_frame = 34 * st->codec->channels;
1459 case AV_CODEC_ID_GSM:
1460 sc->samples_per_frame = 160;
1461 sc->bytes_per_frame = 33;
1467 bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
1468 if (bits_per_sample) {
1469 st->codec->bits_per_coded_sample = bits_per_sample;
1470 sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
1474 static void mov_parse_stsd_subtitle(MOVContext *c, AVIOContext *pb,
1475 AVStream *st, MOVStreamContext *sc,
1478 // ttxt stsd contains display flags, justification, background
1479 // color, fonts, and default styles, so fake an atom to read it
1480 MOVAtom fake_atom = { .size = size };
1481 // mp4s contains a regular esds atom
1482 if (st->codec->codec_tag != AV_RL32("mp4s"))
1483 mov_read_glbl(c, pb, fake_atom);
1484 st->codec->width = sc->width;
1485 st->codec->height = sc->height;
1488 static int mov_parse_stsd_data(MOVContext *c, AVIOContext *pb,
1489 AVStream *st, MOVStreamContext *sc,
1492 if (st->codec->codec_tag == MKTAG('t','m','c','d')) {
1493 if (ff_get_extradata(st->codec, pb, size) < 0)
1494 return AVERROR(ENOMEM);
1496 MOVStreamContext *tmcd_ctx = st->priv_data;
1498 val = AV_RB32(st->codec->extradata + 4);
1499 tmcd_ctx->tmcd_flags = val;
1501 st->codec->flags2 |= CODEC_FLAG2_DROP_FRAME_TIMECODE;
1502 st->codec->time_base.den = st->codec->extradata[16]; /* number of frame */
1503 st->codec->time_base.num = 1;
1506 /* other codec type, just skip (rtp, mp4s ...) */
1507 avio_skip(pb, size);
1512 static int mov_finalize_stsd_codec(MOVContext *c, AVIOContext *pb,
1513 AVStream *st, MOVStreamContext *sc)
1515 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
1516 !st->codec->sample_rate && sc->time_scale > 1)
1517 st->codec->sample_rate = sc->time_scale;
1519 /* special codec parameters handling */
1520 switch (st->codec->codec_id) {
1521 #if CONFIG_DV_DEMUXER
1522 case AV_CODEC_ID_DVAUDIO:
1523 c->dv_fctx = avformat_alloc_context();
1524 c->dv_demux = avpriv_dv_init_demux(c->dv_fctx);
1526 av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
1527 return AVERROR(ENOMEM);
1529 sc->dv_audio_container = 1;
1530 st->codec->codec_id = AV_CODEC_ID_PCM_S16LE;
1533 /* no ifdef since parameters are always those */
1534 case AV_CODEC_ID_QCELP:
1535 st->codec->channels = 1;
1536 // force sample rate for qcelp when not stored in mov
1537 if (st->codec->codec_tag != MKTAG('Q','c','l','p'))
1538 st->codec->sample_rate = 8000;
1540 case AV_CODEC_ID_AMR_NB:
1541 st->codec->channels = 1;
1542 /* force sample rate for amr, stsd in 3gp does not store sample rate */
1543 st->codec->sample_rate = 8000;
1545 case AV_CODEC_ID_AMR_WB:
1546 st->codec->channels = 1;
1547 st->codec->sample_rate = 16000;
1549 case AV_CODEC_ID_MP2:
1550 case AV_CODEC_ID_MP3:
1551 /* force type after stsd for m1a hdlr */
1552 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
1553 st->need_parsing = AVSTREAM_PARSE_FULL;
1555 case AV_CODEC_ID_GSM:
1556 case AV_CODEC_ID_ADPCM_MS:
1557 case AV_CODEC_ID_ADPCM_IMA_WAV:
1558 case AV_CODEC_ID_ILBC:
1559 case AV_CODEC_ID_MACE3:
1560 case AV_CODEC_ID_MACE6:
1561 case AV_CODEC_ID_QDM2:
1562 st->codec->block_align = sc->bytes_per_frame;
1564 case AV_CODEC_ID_ALAC:
1565 if (st->codec->extradata_size == 36) {
1566 st->codec->channels = AV_RB8 (st->codec->extradata + 21);
1567 st->codec->sample_rate = AV_RB32(st->codec->extradata + 32);
1570 case AV_CODEC_ID_AC3:
1571 st->need_parsing = AVSTREAM_PARSE_FULL;
1573 case AV_CODEC_ID_MPEG1VIDEO:
1574 st->need_parsing = AVSTREAM_PARSE_FULL;
1576 case AV_CODEC_ID_VC1:
1577 st->need_parsing = AVSTREAM_PARSE_FULL;
1585 static int mov_skip_multiple_stsd(MOVContext *c, AVIOContext *pb,
1586 int codec_tag, int format,
1589 int video_codec_id = ff_codec_get_id(ff_codec_movvideo_tags, format);
1592 (codec_tag != format &&
1593 (c->fc->video_codec_id ? video_codec_id != c->fc->video_codec_id
1594 : codec_tag != MKTAG('j','p','e','g')))) {
1595 /* Multiple fourcc, we skip JPEG. This is not correct, we should
1596 * export it as a separate AVStream but this needs a few changes
1597 * in the MOV demuxer, patch welcome. */
1599 av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n");
1600 avio_skip(pb, size);
1603 if ( codec_tag == AV_RL32("avc1") ||
1604 codec_tag == AV_RL32("hvc1") ||
1605 codec_tag == AV_RL32("hev1")
1607 av_log(c->fc, AV_LOG_WARNING, "Concatenated H.264 or H.265 might not play correctly.\n");
1612 int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries)
1615 MOVStreamContext *sc;
1616 int pseudo_stream_id;
1618 if (c->fc->nb_streams < 1)
1620 st = c->fc->streams[c->fc->nb_streams-1];
1623 for (pseudo_stream_id = 0;
1624 pseudo_stream_id < entries && !pb->eof_reached;
1625 pseudo_stream_id++) {
1626 //Parsing Sample description table
1628 int ret, dref_id = 1;
1629 MOVAtom a = { AV_RL32("stsd") };
1630 int64_t start_pos = avio_tell(pb);
1631 int64_t size = avio_rb32(pb); /* size */
1632 uint32_t format = avio_rl32(pb); /* data format */
1635 avio_rb32(pb); /* reserved */
1636 avio_rb16(pb); /* reserved */
1637 dref_id = avio_rb16(pb);
1638 }else if (size <= 7){
1639 av_log(c->fc, AV_LOG_ERROR, "invalid size %"PRId64" in stsd\n", size);
1640 return AVERROR_INVALIDDATA;
1643 if (mov_skip_multiple_stsd(c, pb, st->codec->codec_tag, format,
1644 size - (avio_tell(pb) - start_pos)))
1647 sc->pseudo_stream_id = st->codec->codec_tag ? -1 : pseudo_stream_id;
1648 sc->dref_id= dref_id;
1650 id = mov_codec_id(st, format);
1652 av_dlog(c->fc, "size=%"PRId64" 4CC= %c%c%c%c codec_type=%d\n", size,
1653 (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff,
1654 (format >> 24) & 0xff, st->codec->codec_type);
1656 if (st->codec->codec_type==AVMEDIA_TYPE_VIDEO) {
1657 st->codec->codec_id = id;
1658 mov_parse_stsd_video(c, pb, st, sc);
1659 } else if (st->codec->codec_type==AVMEDIA_TYPE_AUDIO) {
1660 st->codec->codec_id = id;
1661 mov_parse_stsd_audio(c, pb, st, sc);
1662 } else if (st->codec->codec_type==AVMEDIA_TYPE_SUBTITLE){
1663 st->codec->codec_id = id;
1664 mov_parse_stsd_subtitle(c, pb, st, sc,
1665 size - (avio_tell(pb) - start_pos));
1667 ret = mov_parse_stsd_data(c, pb, st, sc,
1668 size - (avio_tell(pb) - start_pos));
1672 /* this will read extra atoms at the end (wave, alac, damr, avcC, hvcC, SMI ...) */
1673 a.size = size - (avio_tell(pb) - start_pos);
1675 if ((ret = mov_read_default(c, pb, a)) < 0)
1677 } else if (a.size > 0)
1678 avio_skip(pb, a.size);
1681 if (pb->eof_reached)
1684 return mov_finalize_stsd_codec(c, pb, st, sc);
1687 static int mov_read_stsd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1691 avio_r8(pb); /* version */
1692 avio_rb24(pb); /* flags */
1693 entries = avio_rb32(pb);
1695 return ff_mov_read_stsd_entries(c, pb, entries);
1698 static int mov_read_stsc(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1701 MOVStreamContext *sc;
1702 unsigned int i, entries;
1704 if (c->fc->nb_streams < 1)
1706 st = c->fc->streams[c->fc->nb_streams-1];
1709 avio_r8(pb); /* version */
1710 avio_rb24(pb); /* flags */
1712 entries = avio_rb32(pb);
1714 av_dlog(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
1718 if (entries >= UINT_MAX / sizeof(*sc->stsc_data))
1719 return AVERROR_INVALIDDATA;
1720 sc->stsc_data = av_malloc(entries * sizeof(*sc->stsc_data));
1722 return AVERROR(ENOMEM);
1724 for (i = 0; i < entries && !pb->eof_reached; i++) {
1725 sc->stsc_data[i].first = avio_rb32(pb);
1726 sc->stsc_data[i].count = avio_rb32(pb);
1727 sc->stsc_data[i].id = avio_rb32(pb);
1732 if (pb->eof_reached)
1738 static int mov_read_stps(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1741 MOVStreamContext *sc;
1742 unsigned i, entries;
1744 if (c->fc->nb_streams < 1)
1746 st = c->fc->streams[c->fc->nb_streams-1];
1749 avio_rb32(pb); // version + flags
1751 entries = avio_rb32(pb);
1752 if (entries >= UINT_MAX / sizeof(*sc->stps_data))
1753 return AVERROR_INVALIDDATA;
1754 sc->stps_data = av_malloc(entries * sizeof(*sc->stps_data));
1756 return AVERROR(ENOMEM);
1758 for (i = 0; i < entries && !pb->eof_reached; i++) {
1759 sc->stps_data[i] = avio_rb32(pb);
1760 //av_dlog(c->fc, "stps %d\n", sc->stps_data[i]);
1765 if (pb->eof_reached)
1771 static int mov_read_stss(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1774 MOVStreamContext *sc;
1775 unsigned int i, entries;
1777 if (c->fc->nb_streams < 1)
1779 st = c->fc->streams[c->fc->nb_streams-1];
1782 avio_r8(pb); /* version */
1783 avio_rb24(pb); /* flags */
1785 entries = avio_rb32(pb);
1787 av_dlog(c->fc, "keyframe_count = %d\n", entries);
1791 sc->keyframe_absent = 1;
1792 if (!st->need_parsing && st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
1793 st->need_parsing = AVSTREAM_PARSE_HEADERS;
1796 if (entries >= UINT_MAX / sizeof(int))
1797 return AVERROR_INVALIDDATA;
1798 sc->keyframes = av_malloc(entries * sizeof(int));
1800 return AVERROR(ENOMEM);
1802 for (i = 0; i < entries && !pb->eof_reached; i++) {
1803 sc->keyframes[i] = avio_rb32(pb);
1804 //av_dlog(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
1807 sc->keyframe_count = i;
1809 if (pb->eof_reached)
1815 static int mov_read_stsz(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1818 MOVStreamContext *sc;
1819 unsigned int i, entries, sample_size, field_size, num_bytes;
1823 if (c->fc->nb_streams < 1)
1825 st = c->fc->streams[c->fc->nb_streams-1];
1828 avio_r8(pb); /* version */
1829 avio_rb24(pb); /* flags */
1831 if (atom.type == MKTAG('s','t','s','z')) {
1832 sample_size = avio_rb32(pb);
1833 if (!sc->sample_size) /* do not overwrite value computed in stsd */
1834 sc->sample_size = sample_size;
1835 sc->stsz_sample_size = sample_size;
1839 avio_rb24(pb); /* reserved */
1840 field_size = avio_r8(pb);
1842 entries = avio_rb32(pb);
1844 av_dlog(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, entries);
1846 sc->sample_count = entries;
1850 if (field_size != 4 && field_size != 8 && field_size != 16 && field_size != 32) {
1851 av_log(c->fc, AV_LOG_ERROR, "Invalid sample field size %d\n", field_size);
1852 return AVERROR_INVALIDDATA;
1857 if (entries >= UINT_MAX / sizeof(int) || entries >= (UINT_MAX - 4) / field_size)
1858 return AVERROR_INVALIDDATA;
1859 sc->sample_sizes = av_malloc(entries * sizeof(int));
1860 if (!sc->sample_sizes)
1861 return AVERROR(ENOMEM);
1863 num_bytes = (entries*field_size+4)>>3;
1865 buf = av_malloc(num_bytes+FF_INPUT_BUFFER_PADDING_SIZE);
1867 av_freep(&sc->sample_sizes);
1868 return AVERROR(ENOMEM);
1871 if (avio_read(pb, buf, num_bytes) < num_bytes) {
1872 av_freep(&sc->sample_sizes);
1874 return AVERROR_INVALIDDATA;
1877 init_get_bits(&gb, buf, 8*num_bytes);
1879 for (i = 0; i < entries && !pb->eof_reached; i++) {
1880 sc->sample_sizes[i] = get_bits_long(&gb, field_size);
1881 sc->data_size += sc->sample_sizes[i];
1884 sc->sample_count = i;
1886 if (pb->eof_reached)
1893 static int mov_read_stts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1896 MOVStreamContext *sc;
1897 unsigned int i, entries;
1899 int64_t total_sample_count=0;
1901 if (c->fc->nb_streams < 1)
1903 st = c->fc->streams[c->fc->nb_streams-1];
1906 avio_r8(pb); /* version */
1907 avio_rb24(pb); /* flags */
1908 entries = avio_rb32(pb);
1910 av_dlog(c->fc, "track[%i].stts.entries = %i\n",
1911 c->fc->nb_streams-1, entries);
1913 if (entries >= UINT_MAX / sizeof(*sc->stts_data))
1916 av_free(sc->stts_data);
1917 sc->stts_data = av_malloc(entries * sizeof(*sc->stts_data));
1919 return AVERROR(ENOMEM);
1921 for (i = 0; i < entries && !pb->eof_reached; i++) {
1922 int sample_duration;
1925 sample_count=avio_rb32(pb);
1926 sample_duration = avio_rb32(pb);
1928 /* sample_duration < 0 is invalid based on the spec */
1929 if (sample_duration < 0) {
1930 av_log(c->fc, AV_LOG_ERROR, "Invalid SampleDelta in STTS %d\n", sample_duration);
1931 sample_duration = 1;
1933 if (sample_count < 0) {
1934 av_log(c->fc, AV_LOG_ERROR, "Invalid sample_count=%d\n", sample_count);
1935 return AVERROR_INVALIDDATA;
1937 sc->stts_data[i].count= sample_count;
1938 sc->stts_data[i].duration= sample_duration;
1940 av_dlog(c->fc, "sample_count=%d, sample_duration=%d\n",
1941 sample_count, sample_duration);
1945 && sample_count == 1
1946 && total_sample_count > 100
1947 && sample_duration/10 > duration / total_sample_count)
1948 sample_duration = duration / total_sample_count;
1949 duration+=(int64_t)sample_duration*sample_count;
1950 total_sample_count+=sample_count;
1955 sc->duration_for_fps += duration;
1956 sc->nb_frames_for_fps += total_sample_count;
1958 if (pb->eof_reached)
1961 st->nb_frames= total_sample_count;
1963 st->duration= duration;
1964 sc->track_end = duration;
1968 static void mov_update_dts_shift(MOVStreamContext *sc, int duration)
1971 sc->dts_shift = FFMAX(sc->dts_shift, -duration);
1975 static int mov_read_ctts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1978 MOVStreamContext *sc;
1979 unsigned int i, entries;
1981 if (c->fc->nb_streams < 1)
1983 st = c->fc->streams[c->fc->nb_streams-1];
1986 avio_r8(pb); /* version */
1987 avio_rb24(pb); /* flags */
1988 entries = avio_rb32(pb);
1990 av_dlog(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
1994 if (entries >= UINT_MAX / sizeof(*sc->ctts_data))
1995 return AVERROR_INVALIDDATA;
1996 sc->ctts_data = av_malloc(entries * sizeof(*sc->ctts_data));
1998 return AVERROR(ENOMEM);
2000 for (i = 0; i < entries && !pb->eof_reached; i++) {
2001 int count =avio_rb32(pb);
2002 int duration =avio_rb32(pb);
2004 sc->ctts_data[i].count = count;
2005 sc->ctts_data[i].duration= duration;
2007 av_dlog(c->fc, "count=%d, duration=%d\n",
2010 if (FFABS(duration) > (1<<28) && i+2<entries) {
2011 av_log(c->fc, AV_LOG_WARNING, "CTTS invalid\n");
2012 av_freep(&sc->ctts_data);
2018 mov_update_dts_shift(sc, duration);
2023 if (pb->eof_reached)
2026 av_dlog(c->fc, "dts shift %d\n", sc->dts_shift);
2031 static int mov_read_sbgp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2034 MOVStreamContext *sc;
2035 unsigned int i, entries;
2037 uint32_t grouping_type;
2039 if (c->fc->nb_streams < 1)
2041 st = c->fc->streams[c->fc->nb_streams-1];
2044 version = avio_r8(pb); /* version */
2045 avio_rb24(pb); /* flags */
2046 grouping_type = avio_rl32(pb);
2047 if (grouping_type != MKTAG( 'r','a','p',' '))
2048 return 0; /* only support 'rap ' grouping */
2050 avio_rb32(pb); /* grouping_type_parameter */
2052 entries = avio_rb32(pb);
2055 if (entries >= UINT_MAX / sizeof(*sc->rap_group))
2056 return AVERROR_INVALIDDATA;
2057 sc->rap_group = av_malloc(entries * sizeof(*sc->rap_group));
2059 return AVERROR(ENOMEM);
2061 for (i = 0; i < entries && !pb->eof_reached; i++) {
2062 sc->rap_group[i].count = avio_rb32(pb); /* sample_count */
2063 sc->rap_group[i].index = avio_rb32(pb); /* group_description_index */
2066 sc->rap_group_count = i;
2068 return pb->eof_reached ? AVERROR_EOF : 0;
2071 static void mov_build_index(MOVContext *mov, AVStream *st)
2073 MOVStreamContext *sc = st->priv_data;
2074 int64_t current_offset;
2075 int64_t current_dts = 0;
2076 unsigned int stts_index = 0;
2077 unsigned int stsc_index = 0;
2078 unsigned int stss_index = 0;
2079 unsigned int stps_index = 0;
2081 uint64_t stream_size = 0;
2083 /* adjust first dts according to edit list */
2084 if ((sc->empty_duration || sc->start_time) && mov->time_scale > 0) {
2085 if (sc->empty_duration)
2086 sc->empty_duration = av_rescale(sc->empty_duration, sc->time_scale, mov->time_scale);
2087 sc->time_offset = sc->start_time - sc->empty_duration;
2088 current_dts = -sc->time_offset;
2089 if (sc->ctts_count>0 && sc->stts_count>0 &&
2090 sc->ctts_data[0].duration / FFMAX(sc->stts_data[0].duration, 1) > 16) {
2091 /* more than 16 frames delay, dts are likely wrong
2092 this happens with files created by iMovie */
2094 st->codec->has_b_frames = 1;
2098 /* only use old uncompressed audio chunk demuxing when stts specifies it */
2099 if (!(st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
2100 sc->stts_count == 1 && sc->stts_data[0].duration == 1)) {
2101 unsigned int current_sample = 0;
2102 unsigned int stts_sample = 0;
2103 unsigned int sample_size;
2104 unsigned int distance = 0;
2105 unsigned int rap_group_index = 0;
2106 unsigned int rap_group_sample = 0;
2107 int rap_group_present = sc->rap_group_count && sc->rap_group;
2108 int key_off = (sc->keyframe_count && sc->keyframes[0] > 0) || (sc->stps_count && sc->stps_data[0] > 0);
2110 current_dts -= sc->dts_shift;
2112 if (!sc->sample_count || st->nb_index_entries)
2114 if (sc->sample_count >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries)
2116 if (av_reallocp_array(&st->index_entries,
2117 st->nb_index_entries + sc->sample_count,
2118 sizeof(*st->index_entries)) < 0) {
2119 st->nb_index_entries = 0;
2122 st->index_entries_allocated_size = (st->nb_index_entries + sc->sample_count) * sizeof(*st->index_entries);
2124 for (i = 0; i < sc->chunk_count; i++) {
2125 int64_t next_offset = i+1 < sc->chunk_count ? sc->chunk_offsets[i+1] : INT64_MAX;
2126 current_offset = sc->chunk_offsets[i];
2127 while (stsc_index + 1 < sc->stsc_count &&
2128 i + 1 == sc->stsc_data[stsc_index + 1].first)
2131 if (next_offset > current_offset && sc->sample_size>0 && sc->sample_size < sc->stsz_sample_size &&
2132 sc->stsc_data[stsc_index].count * (int64_t)sc->stsz_sample_size > next_offset - current_offset) {
2133 av_log(mov->fc, AV_LOG_WARNING, "STSZ sample size %d invalid (too large), ignoring\n", sc->stsz_sample_size);
2134 sc->stsz_sample_size = sc->sample_size;
2136 if (sc->stsz_sample_size>0 && sc->stsz_sample_size < sc->sample_size) {
2137 av_log(mov->fc, AV_LOG_WARNING, "STSZ sample size %d invalid (too small), ignoring\n", sc->stsz_sample_size);
2138 sc->stsz_sample_size = sc->sample_size;
2141 for (j = 0; j < sc->stsc_data[stsc_index].count; j++) {
2143 if (current_sample >= sc->sample_count) {
2144 av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
2148 if (!sc->keyframe_absent && (!sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index])) {
2150 if (stss_index + 1 < sc->keyframe_count)
2152 } else if (sc->stps_count && current_sample+key_off == sc->stps_data[stps_index]) {
2154 if (stps_index + 1 < sc->stps_count)
2157 if (rap_group_present && rap_group_index < sc->rap_group_count) {
2158 if (sc->rap_group[rap_group_index].index > 0)
2160 if (++rap_group_sample == sc->rap_group[rap_group_index].count) {
2161 rap_group_sample = 0;
2167 sample_size = sc->stsz_sample_size > 0 ? sc->stsz_sample_size : sc->sample_sizes[current_sample];
2168 if (sc->pseudo_stream_id == -1 ||
2169 sc->stsc_data[stsc_index].id - 1 == sc->pseudo_stream_id) {
2170 AVIndexEntry *e = &st->index_entries[st->nb_index_entries++];
2171 e->pos = current_offset;
2172 e->timestamp = current_dts;
2173 e->size = sample_size;
2174 e->min_distance = distance;
2175 e->flags = keyframe ? AVINDEX_KEYFRAME : 0;
2176 av_dlog(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
2177 "size %d, distance %d, keyframe %d\n", st->index, current_sample,
2178 current_offset, current_dts, sample_size, distance, keyframe);
2179 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && st->nb_index_entries < 100)
2180 ff_rfps_add_frame(mov->fc, st, current_dts);
2183 current_offset += sample_size;
2184 stream_size += sample_size;
2185 current_dts += sc->stts_data[stts_index].duration;
2189 if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
2195 if (st->duration > 0)
2196 st->codec->bit_rate = stream_size*8*sc->time_scale/st->duration;
2198 unsigned chunk_samples, total = 0;
2200 // compute total chunk count
2201 for (i = 0; i < sc->stsc_count; i++) {
2202 unsigned count, chunk_count;
2204 chunk_samples = sc->stsc_data[i].count;
2205 if (i != sc->stsc_count - 1 &&
2206 sc->samples_per_frame && chunk_samples % sc->samples_per_frame) {
2207 av_log(mov->fc, AV_LOG_ERROR, "error unaligned chunk\n");
2211 if (sc->samples_per_frame >= 160) { // gsm
2212 count = chunk_samples / sc->samples_per_frame;
2213 } else if (sc->samples_per_frame > 1) {
2214 unsigned samples = (1024/sc->samples_per_frame)*sc->samples_per_frame;
2215 count = (chunk_samples+samples-1) / samples;
2217 count = (chunk_samples+1023) / 1024;
2220 if (i < sc->stsc_count - 1)
2221 chunk_count = sc->stsc_data[i+1].first - sc->stsc_data[i].first;
2223 chunk_count = sc->chunk_count - (sc->stsc_data[i].first - 1);
2224 total += chunk_count * count;
2227 av_dlog(mov->fc, "chunk count %d\n", total);
2228 if (total >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries)
2230 if (av_reallocp_array(&st->index_entries,
2231 st->nb_index_entries + total,
2232 sizeof(*st->index_entries)) < 0) {
2233 st->nb_index_entries = 0;
2236 st->index_entries_allocated_size = (st->nb_index_entries + total) * sizeof(*st->index_entries);
2239 for (i = 0; i < sc->chunk_count; i++) {
2240 current_offset = sc->chunk_offsets[i];
2241 if (stsc_index + 1 < sc->stsc_count &&
2242 i + 1 == sc->stsc_data[stsc_index + 1].first)
2244 chunk_samples = sc->stsc_data[stsc_index].count;
2246 while (chunk_samples > 0) {
2248 unsigned size, samples;
2250 if (sc->samples_per_frame >= 160) { // gsm
2251 samples = sc->samples_per_frame;
2252 size = sc->bytes_per_frame;
2254 if (sc->samples_per_frame > 1) {
2255 samples = FFMIN((1024 / sc->samples_per_frame)*
2256 sc->samples_per_frame, chunk_samples);
2257 size = (samples / sc->samples_per_frame) * sc->bytes_per_frame;
2259 samples = FFMIN(1024, chunk_samples);
2260 size = samples * sc->sample_size;
2264 if (st->nb_index_entries >= total) {
2265 av_log(mov->fc, AV_LOG_ERROR, "wrong chunk count %d\n", total);
2268 e = &st->index_entries[st->nb_index_entries++];
2269 e->pos = current_offset;
2270 e->timestamp = current_dts;
2272 e->min_distance = 0;
2273 e->flags = AVINDEX_KEYFRAME;
2274 av_dlog(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", "
2275 "size %d, duration %d\n", st->index, i, current_offset, current_dts,
2278 current_offset += size;
2279 current_dts += samples;
2280 chunk_samples -= samples;
2286 static int mov_open_dref(AVIOContext **pb, const char *src, MOVDref *ref,
2287 AVIOInterruptCB *int_cb, int use_absolute_path, AVFormatContext *fc)
2289 /* try relative path, we do not try the absolute because it can leak information about our
2290 system to an attacker */
2291 if (ref->nlvl_to > 0 && ref->nlvl_from > 0) {
2292 char filename[1024];
2293 const char *src_path;
2296 /* find a source dir */
2297 src_path = strrchr(src, '/');
2303 /* find a next level down to target */
2304 for (i = 0, l = strlen(ref->path) - 1; l >= 0; l--)
2305 if (ref->path[l] == '/') {
2306 if (i == ref->nlvl_to - 1)
2312 /* compose filename if next level down to target was found */
2313 if (i == ref->nlvl_to - 1 && src_path - src < sizeof(filename)) {
2314 memcpy(filename, src, src_path - src);
2315 filename[src_path - src] = 0;
2317 for (i = 1; i < ref->nlvl_from; i++)
2318 av_strlcat(filename, "../", 1024);
2320 av_strlcat(filename, ref->path + l + 1, 1024);
2322 if (!avio_open2(pb, filename, AVIO_FLAG_READ, int_cb, NULL))
2325 } else if (use_absolute_path) {
2326 av_log(fc, AV_LOG_WARNING, "Using absolute path on user request, "
2327 "this is a possible security issue\n");
2328 if (!avio_open2(pb, ref->path, AVIO_FLAG_READ, int_cb, NULL))
2332 return AVERROR(ENOENT);
2335 static void fix_timescale(MOVContext *c, MOVStreamContext *sc)
2337 if (sc->time_scale <= 0) {
2338 av_log(c->fc, AV_LOG_WARNING, "stream %d, timescale not set\n", sc->ffindex);
2339 sc->time_scale = c->time_scale;
2340 if (sc->time_scale <= 0)
2345 static int mov_read_trak(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2348 MOVStreamContext *sc;
2351 st = avformat_new_stream(c->fc, NULL);
2352 if (!st) return AVERROR(ENOMEM);
2353 st->id = c->fc->nb_streams;
2354 sc = av_mallocz(sizeof(MOVStreamContext));
2355 if (!sc) return AVERROR(ENOMEM);
2358 st->codec->codec_type = AVMEDIA_TYPE_DATA;
2359 sc->ffindex = st->index;
2361 if ((ret = mov_read_default(c, pb, atom)) < 0)
2365 if (sc->chunk_count && (!sc->stts_count || !sc->stsc_count ||
2366 (!sc->sample_size && !sc->sample_count))) {
2367 av_log(c->fc, AV_LOG_ERROR, "stream %d, missing mandatory atoms, broken header\n",
2372 fix_timescale(c, sc);
2374 avpriv_set_pts_info(st, 64, 1, sc->time_scale);
2376 mov_build_index(c, st);
2378 if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) {
2379 MOVDref *dref = &sc->drefs[sc->dref_id - 1];
2380 if (mov_open_dref(&sc->pb, c->fc->filename, dref, &c->fc->interrupt_callback,
2381 c->use_absolute_path, c->fc) < 0)
2382 av_log(c->fc, AV_LOG_ERROR,
2383 "stream %d, error opening alias: path='%s', dir='%s', "
2384 "filename='%s', volume='%s', nlvl_from=%d, nlvl_to=%d\n",
2385 st->index, dref->path, dref->dir, dref->filename,
2386 dref->volume, dref->nlvl_from, dref->nlvl_to);
2389 sc->pb_is_copied = 1;
2392 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2393 if (!st->sample_aspect_ratio.num &&
2394 (st->codec->width != sc->width || st->codec->height != sc->height)) {
2395 st->sample_aspect_ratio = av_d2q(((double)st->codec->height * sc->width) /
2396 ((double)st->codec->width * sc->height), INT_MAX);
2399 #if FF_API_R_FRAME_RATE
2400 if (sc->stts_count == 1 || (sc->stts_count == 2 && sc->stts_data[1].count == 1))
2401 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den,
2402 sc->time_scale, sc->stts_data[0].duration, INT_MAX);
2406 // done for ai5q, ai52, ai55, ai1q, ai12 and ai15.
2407 if (!st->codec->extradata_size && st->codec->codec_id == AV_CODEC_ID_H264 &&
2408 TAG_IS_AVCI(st->codec->codec_tag)) {
2409 ret = ff_generate_avci_extradata(st);
2414 switch (st->codec->codec_id) {
2415 #if CONFIG_H261_DECODER
2416 case AV_CODEC_ID_H261:
2418 #if CONFIG_H263_DECODER
2419 case AV_CODEC_ID_H263:
2421 #if CONFIG_MPEG4_DECODER
2422 case AV_CODEC_ID_MPEG4:
2424 st->codec->width = 0; /* let decoder init width/height */
2425 st->codec->height= 0;
2429 /* Do not need those anymore. */
2430 av_freep(&sc->chunk_offsets);
2431 av_freep(&sc->stsc_data);
2432 av_freep(&sc->sample_sizes);
2433 av_freep(&sc->keyframes);
2434 av_freep(&sc->stts_data);
2435 av_freep(&sc->stps_data);
2436 av_freep(&sc->rap_group);
2441 static int mov_read_ilst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2444 c->itunes_metadata = 1;
2445 ret = mov_read_default(c, pb, atom);
2446 c->itunes_metadata = 0;
2450 static int mov_read_meta(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2452 while (atom.size > 8) {
2453 uint32_t tag = avio_rl32(pb);
2455 if (tag == MKTAG('h','d','l','r')) {
2456 avio_seek(pb, -8, SEEK_CUR);
2458 return mov_read_default(c, pb, atom);
2464 static int mov_read_tkhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2469 int64_t disp_transform[2];
2470 int display_matrix[3][2];
2472 MOVStreamContext *sc;
2476 if (c->fc->nb_streams < 1)
2478 st = c->fc->streams[c->fc->nb_streams-1];
2481 version = avio_r8(pb);
2482 flags = avio_rb24(pb);
2483 st->disposition |= (flags & MOV_TKHD_FLAG_ENABLED) ? AV_DISPOSITION_DEFAULT : 0;
2489 avio_rb32(pb); /* creation time */
2490 avio_rb32(pb); /* modification time */
2492 st->id = (int)avio_rb32(pb); /* track id (NOT 0 !)*/
2493 avio_rb32(pb); /* reserved */
2495 /* highlevel (considering edits) duration in movie timebase */
2496 (version == 1) ? avio_rb64(pb) : avio_rb32(pb);
2497 avio_rb32(pb); /* reserved */
2498 avio_rb32(pb); /* reserved */
2500 avio_rb16(pb); /* layer */
2501 avio_rb16(pb); /* alternate group */
2502 avio_rb16(pb); /* volume */
2503 avio_rb16(pb); /* reserved */
2505 //read in the display matrix (outlined in ISO 14496-12, Section 6.2.2)
2506 // they're kept in fixed point format through all calculations
2507 // ignore u,v,z b/c we don't need the scale factor to calc aspect ratio
2508 for (i = 0; i < 3; i++) {
2509 display_matrix[i][0] = avio_rb32(pb); // 16.16 fixed point
2510 display_matrix[i][1] = avio_rb32(pb); // 16.16 fixed point
2511 avio_rb32(pb); // 2.30 fixed point (not used)
2514 width = avio_rb32(pb); // 16.16 fixed point track width
2515 height = avio_rb32(pb); // 16.16 fixed point track height
2516 sc->width = width >> 16;
2517 sc->height = height >> 16;
2519 //Assign clockwise rotate values based on transform matrix so that
2520 //we can compensate for iPhone orientation during capture.
2522 if (display_matrix[1][0] == -65536 && display_matrix[0][1] == 65536) {
2523 av_dict_set(&st->metadata, "rotate", "90", 0);
2526 if (display_matrix[0][0] == -65536 && display_matrix[1][1] == -65536) {
2527 av_dict_set(&st->metadata, "rotate", "180", 0);
2530 if (display_matrix[1][0] == 65536 && display_matrix[0][1] == -65536) {
2531 av_dict_set(&st->metadata, "rotate", "270", 0);
2534 // transform the display width/height according to the matrix
2535 // skip this if the display matrix is the default identity matrix
2536 // or if it is rotating the picture, ex iPhone 3GS
2537 // to keep the same scale, use [width height 1<<16]
2538 if (width && height &&
2539 ((display_matrix[0][0] != 65536 ||
2540 display_matrix[1][1] != 65536) &&
2541 !display_matrix[0][1] &&
2542 !display_matrix[1][0] &&
2543 !display_matrix[2][0] && !display_matrix[2][1])) {
2544 for (i = 0; i < 2; i++)
2546 (int64_t) width * display_matrix[0][i] +
2547 (int64_t) height * display_matrix[1][i] +
2548 ((int64_t) display_matrix[2][i] << 16);
2550 //sample aspect ratio is new width/height divided by old width/height
2551 st->sample_aspect_ratio = av_d2q(
2552 ((double) disp_transform[0] * height) /
2553 ((double) disp_transform[1] * width), INT_MAX);
2558 static int mov_read_tfhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2560 MOVFragment *frag = &c->fragment;
2561 MOVTrackExt *trex = NULL;
2562 int flags, track_id, i;
2564 avio_r8(pb); /* version */
2565 flags = avio_rb24(pb);
2567 track_id = avio_rb32(pb);
2569 return AVERROR_INVALIDDATA;
2570 frag->track_id = track_id;
2571 for (i = 0; i < c->trex_count; i++)
2572 if (c->trex_data[i].track_id == frag->track_id) {
2573 trex = &c->trex_data[i];
2577 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding trex\n");
2578 return AVERROR_INVALIDDATA;
2581 frag->base_data_offset = flags & MOV_TFHD_BASE_DATA_OFFSET ?
2582 avio_rb64(pb) : frag->moof_offset;
2583 frag->stsd_id = flags & MOV_TFHD_STSD_ID ? avio_rb32(pb) : trex->stsd_id;
2585 frag->duration = flags & MOV_TFHD_DEFAULT_DURATION ?
2586 avio_rb32(pb) : trex->duration;
2587 frag->size = flags & MOV_TFHD_DEFAULT_SIZE ?
2588 avio_rb32(pb) : trex->size;
2589 frag->flags = flags & MOV_TFHD_DEFAULT_FLAGS ?
2590 avio_rb32(pb) : trex->flags;
2591 av_dlog(c->fc, "frag flags 0x%x\n", frag->flags);
2595 static int mov_read_chap(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2597 c->chapter_track = avio_rb32(pb);
2601 static int mov_read_trex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2606 if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data))
2607 return AVERROR_INVALIDDATA;
2608 if ((err = av_reallocp_array(&c->trex_data, c->trex_count + 1,
2609 sizeof(*c->trex_data))) < 0) {
2614 c->fc->duration = AV_NOPTS_VALUE; // the duration from mvhd is not representing the whole file when fragments are used.
2616 trex = &c->trex_data[c->trex_count++];
2617 avio_r8(pb); /* version */
2618 avio_rb24(pb); /* flags */
2619 trex->track_id = avio_rb32(pb);
2620 trex->stsd_id = avio_rb32(pb);
2621 trex->duration = avio_rb32(pb);
2622 trex->size = avio_rb32(pb);
2623 trex->flags = avio_rb32(pb);
2627 static int mov_read_trun(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2629 MOVFragment *frag = &c->fragment;
2630 AVStream *st = NULL;
2631 MOVStreamContext *sc;
2635 int data_offset = 0;
2636 unsigned entries, first_sample_flags = frag->flags;
2637 int flags, distance, i, found_keyframe = 0, err;
2639 for (i = 0; i < c->fc->nb_streams; i++) {
2640 if (c->fc->streams[i]->id == frag->track_id) {
2641 st = c->fc->streams[i];
2646 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id);
2647 return AVERROR_INVALIDDATA;
2650 if (sc->pseudo_stream_id+1 != frag->stsd_id && sc->pseudo_stream_id != -1)
2652 avio_r8(pb); /* version */
2653 flags = avio_rb24(pb);
2654 entries = avio_rb32(pb);
2655 av_dlog(c->fc, "flags 0x%x entries %d\n", flags, entries);
2657 /* Always assume the presence of composition time offsets.
2658 * Without this assumption, for instance, we cannot deal with a track in fragmented movies that meet the following.
2659 * 1) in the initial movie, there are no samples.
2660 * 2) in the first movie fragment, there is only one sample without composition time offset.
2661 * 3) in the subsequent movie fragments, there are samples with composition time offset. */
2662 if (!sc->ctts_count && sc->sample_count)
2664 /* Complement ctts table if moov atom doesn't have ctts atom. */
2665 ctts_data = av_realloc(NULL, sizeof(*sc->ctts_data));
2667 return AVERROR(ENOMEM);
2668 sc->ctts_data = ctts_data;
2669 sc->ctts_data[sc->ctts_count].count = sc->sample_count;
2670 sc->ctts_data[sc->ctts_count].duration = 0;
2673 if ((uint64_t)entries+sc->ctts_count >= UINT_MAX/sizeof(*sc->ctts_data))
2674 return AVERROR_INVALIDDATA;
2675 if ((err = av_reallocp_array(&sc->ctts_data, entries + sc->ctts_count,
2676 sizeof(*sc->ctts_data))) < 0) {
2680 if (flags & MOV_TRUN_DATA_OFFSET) data_offset = avio_rb32(pb);
2681 if (flags & MOV_TRUN_FIRST_SAMPLE_FLAGS) first_sample_flags = avio_rb32(pb);
2682 dts = sc->track_end - sc->time_offset;
2683 offset = frag->base_data_offset + data_offset;
2685 av_dlog(c->fc, "first sample flags 0x%x\n", first_sample_flags);
2686 for (i = 0; i < entries && !pb->eof_reached; i++) {
2687 unsigned sample_size = frag->size;
2688 int sample_flags = i ? frag->flags : first_sample_flags;
2689 unsigned sample_duration = frag->duration;
2692 if (flags & MOV_TRUN_SAMPLE_DURATION) sample_duration = avio_rb32(pb);
2693 if (flags & MOV_TRUN_SAMPLE_SIZE) sample_size = avio_rb32(pb);
2694 if (flags & MOV_TRUN_SAMPLE_FLAGS) sample_flags = avio_rb32(pb);
2695 sc->ctts_data[sc->ctts_count].count = 1;
2696 sc->ctts_data[sc->ctts_count].duration = (flags & MOV_TRUN_SAMPLE_CTS) ?
2698 mov_update_dts_shift(sc, sc->ctts_data[sc->ctts_count].duration);
2700 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
2702 else if (!found_keyframe)
2703 keyframe = found_keyframe =
2704 !(sample_flags & (MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC |
2705 MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES));
2708 av_add_index_entry(st, offset, dts, sample_size, distance,
2709 keyframe ? AVINDEX_KEYFRAME : 0);
2710 av_dlog(c->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
2711 "size %d, distance %d, keyframe %d\n", st->index, sc->sample_count+i,
2712 offset, dts, sample_size, distance, keyframe);
2714 dts += sample_duration;
2715 offset += sample_size;
2716 sc->data_size += sample_size;
2717 sc->duration_for_fps += sample_duration;
2718 sc->nb_frames_for_fps ++;
2721 if (pb->eof_reached)
2724 frag->moof_offset = offset;
2725 st->duration = sc->track_end = dts + sc->time_offset;
2729 /* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
2730 /* like the files created with Adobe Premiere 5.0, for samples see */
2731 /* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
2732 static int mov_read_wide(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2737 return 0; /* continue */
2738 if (avio_rb32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
2739 avio_skip(pb, atom.size - 4);
2742 atom.type = avio_rl32(pb);
2744 if (atom.type != MKTAG('m','d','a','t')) {
2745 avio_skip(pb, atom.size);
2748 err = mov_read_mdat(c, pb, atom);
2752 static int mov_read_cmov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2757 uint8_t *moov_data; /* uncompressed data */
2758 long cmov_len, moov_len;
2761 avio_rb32(pb); /* dcom atom */
2762 if (avio_rl32(pb) != MKTAG('d','c','o','m'))
2763 return AVERROR_INVALIDDATA;
2764 if (avio_rl32(pb) != MKTAG('z','l','i','b')) {
2765 av_log(c->fc, AV_LOG_ERROR, "unknown compression for cmov atom !\n");
2766 return AVERROR_INVALIDDATA;
2768 avio_rb32(pb); /* cmvd atom */
2769 if (avio_rl32(pb) != MKTAG('c','m','v','d'))
2770 return AVERROR_INVALIDDATA;
2771 moov_len = avio_rb32(pb); /* uncompressed size */
2772 cmov_len = atom.size - 6 * 4;
2774 cmov_data = av_malloc(cmov_len);
2776 return AVERROR(ENOMEM);
2777 moov_data = av_malloc(moov_len);
2780 return AVERROR(ENOMEM);
2782 avio_read(pb, cmov_data, cmov_len);
2783 if (uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
2784 goto free_and_return;
2785 if (ffio_init_context(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
2786 goto free_and_return;
2787 atom.type = MKTAG('m','o','o','v');
2788 atom.size = moov_len;
2789 ret = mov_read_default(c, &ctx, atom);
2795 av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
2796 return AVERROR(ENOSYS);
2800 /* edit list atom */
2801 static int mov_read_elst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2803 MOVStreamContext *sc;
2804 int i, edit_count, version, edit_start_index = 0;
2805 int unsupported = 0;
2807 if (c->fc->nb_streams < 1 || c->ignore_editlist)
2809 sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
2811 version = avio_r8(pb); /* version */
2812 avio_rb24(pb); /* flags */
2813 edit_count = avio_rb32(pb); /* entries */
2815 if ((uint64_t)edit_count*12+8 > atom.size)
2816 return AVERROR_INVALIDDATA;
2818 av_dlog(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, edit_count);
2819 for (i=0; i<edit_count; i++){
2824 duration = avio_rb64(pb);
2825 time = avio_rb64(pb);
2827 duration = avio_rb32(pb); /* segment duration */
2828 time = (int32_t)avio_rb32(pb); /* media time */
2830 rate = avio_rb32(pb);
2831 if (i == 0 && time == -1) {
2832 sc->empty_duration = duration;
2833 edit_start_index = 1;
2834 } else if (i == edit_start_index && time >= 0)
2835 sc->start_time = time;
2839 av_dlog(c->fc, "duration=%"PRId64" time=%"PRId64" rate=%f\n",
2840 duration, time, rate / 65536.0);
2844 av_log(c->fc, AV_LOG_WARNING, "multiple edit list entries, "
2845 "a/v desync might occur, patch welcome\n");
2850 static int mov_read_tmcd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2852 MOVStreamContext *sc;
2854 if (c->fc->nb_streams < 1)
2855 return AVERROR_INVALIDDATA;
2856 sc = c->fc->streams[c->fc->nb_streams - 1]->priv_data;
2857 sc->timecode_track = avio_rb32(pb);
2861 static int mov_read_uuid(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2865 static const uint8_t uuid_isml_manifest[] = {
2866 0xa5, 0xd4, 0x0b, 0x30, 0xe8, 0x14, 0x11, 0xdd,
2867 0xba, 0x2f, 0x08, 0x00, 0x20, 0x0c, 0x9a, 0x66
2870 if (atom.size < sizeof(uuid) || atom.size == INT64_MAX)
2871 return AVERROR_INVALIDDATA;
2873 ret = avio_read(pb, uuid, sizeof(uuid));
2876 } else if (ret != sizeof(uuid)) {
2877 return AVERROR_INVALIDDATA;
2879 if (!memcmp(uuid, uuid_isml_manifest, sizeof(uuid))) {
2880 uint8_t *buffer, *ptr;
2882 size_t len = atom.size - sizeof(uuid);
2885 return AVERROR_INVALIDDATA;
2887 ret = avio_skip(pb, 4); // zeroes
2890 buffer = av_mallocz(len + 1);
2892 return AVERROR(ENOMEM);
2894 ret = avio_read(pb, buffer, len);
2898 } else if (ret != len) {
2900 return AVERROR_INVALIDDATA;
2904 while ((ptr = av_stristr(ptr, "systemBitrate=\"")) != NULL) {
2905 ptr += sizeof("systemBitrate=\"") - 1;
2906 c->bitrates_count++;
2907 c->bitrates = av_realloc_f(c->bitrates, c->bitrates_count, sizeof(*c->bitrates));
2909 c->bitrates_count = 0;
2911 return AVERROR(ENOMEM);
2914 ret = strtol(ptr, &endptr, 10);
2915 if (ret < 0 || errno || *endptr != '"') {
2916 c->bitrates[c->bitrates_count - 1] = 0;
2918 c->bitrates[c->bitrates_count - 1] = ret;
2927 static const MOVParseTableEntry mov_default_parse_table[] = {
2928 { MKTAG('A','C','L','R'), mov_read_avid },
2929 { MKTAG('A','P','R','G'), mov_read_avid },
2930 { MKTAG('A','A','L','P'), mov_read_avid },
2931 { MKTAG('A','R','E','S'), mov_read_ares },
2932 { MKTAG('a','v','s','s'), mov_read_avss },
2933 { MKTAG('c','h','p','l'), mov_read_chpl },
2934 { MKTAG('c','o','6','4'), mov_read_stco },
2935 { MKTAG('c','t','t','s'), mov_read_ctts }, /* composition time to sample */
2936 { MKTAG('d','i','n','f'), mov_read_default },
2937 { MKTAG('d','r','e','f'), mov_read_dref },
2938 { MKTAG('e','d','t','s'), mov_read_default },
2939 { MKTAG('e','l','s','t'), mov_read_elst },
2940 { MKTAG('e','n','d','a'), mov_read_enda },
2941 { MKTAG('f','i','e','l'), mov_read_fiel },
2942 { MKTAG('f','t','y','p'), mov_read_ftyp },
2943 { MKTAG('g','l','b','l'), mov_read_glbl },
2944 { MKTAG('h','d','l','r'), mov_read_hdlr },
2945 { MKTAG('i','l','s','t'), mov_read_ilst },
2946 { MKTAG('j','p','2','h'), mov_read_jp2h },
2947 { MKTAG('m','d','a','t'), mov_read_mdat },
2948 { MKTAG('m','d','h','d'), mov_read_mdhd },
2949 { MKTAG('m','d','i','a'), mov_read_default },
2950 { MKTAG('m','e','t','a'), mov_read_meta },
2951 { MKTAG('m','i','n','f'), mov_read_default },
2952 { MKTAG('m','o','o','f'), mov_read_moof },
2953 { MKTAG('m','o','o','v'), mov_read_moov },
2954 { MKTAG('m','v','e','x'), mov_read_default },
2955 { MKTAG('m','v','h','d'), mov_read_mvhd },
2956 { MKTAG('S','M','I',' '), mov_read_svq3 },
2957 { MKTAG('a','l','a','c'), mov_read_alac }, /* alac specific atom */
2958 { MKTAG('a','v','c','C'), mov_read_glbl },
2959 { MKTAG('p','a','s','p'), mov_read_pasp },
2960 { MKTAG('s','t','b','l'), mov_read_default },
2961 { MKTAG('s','t','c','o'), mov_read_stco },
2962 { MKTAG('s','t','p','s'), mov_read_stps },
2963 { MKTAG('s','t','r','f'), mov_read_strf },
2964 { MKTAG('s','t','s','c'), mov_read_stsc },
2965 { MKTAG('s','t','s','d'), mov_read_stsd }, /* sample description */
2966 { MKTAG('s','t','s','s'), mov_read_stss }, /* sync sample */
2967 { MKTAG('s','t','s','z'), mov_read_stsz }, /* sample size */
2968 { MKTAG('s','t','t','s'), mov_read_stts },
2969 { MKTAG('s','t','z','2'), mov_read_stsz }, /* compact sample size */
2970 { MKTAG('t','k','h','d'), mov_read_tkhd }, /* track header */
2971 { MKTAG('t','f','h','d'), mov_read_tfhd }, /* track fragment header */
2972 { MKTAG('t','r','a','k'), mov_read_trak },
2973 { MKTAG('t','r','a','f'), mov_read_default },
2974 { MKTAG('t','r','e','f'), mov_read_default },
2975 { MKTAG('t','m','c','d'), mov_read_tmcd },
2976 { MKTAG('c','h','a','p'), mov_read_chap },
2977 { MKTAG('t','r','e','x'), mov_read_trex },
2978 { MKTAG('t','r','u','n'), mov_read_trun },
2979 { MKTAG('u','d','t','a'), mov_read_default },
2980 { MKTAG('w','a','v','e'), mov_read_wave },
2981 { MKTAG('e','s','d','s'), mov_read_esds },
2982 { MKTAG('d','a','c','3'), mov_read_dac3 }, /* AC-3 info */
2983 { MKTAG('d','e','c','3'), mov_read_dec3 }, /* EAC-3 info */
2984 { MKTAG('w','i','d','e'), mov_read_wide }, /* place holder */
2985 { MKTAG('w','f','e','x'), mov_read_wfex },
2986 { MKTAG('c','m','o','v'), mov_read_cmov },
2987 { MKTAG('c','h','a','n'), mov_read_chan }, /* channel layout */
2988 { MKTAG('d','v','c','1'), mov_read_dvc1 },
2989 { MKTAG('s','b','g','p'), mov_read_sbgp },
2990 { MKTAG('h','v','c','C'), mov_read_glbl },
2991 { MKTAG('u','u','i','d'), mov_read_uuid },
2992 { MKTAG('C','i','n', 0x8e), mov_read_targa_y216 },
2996 static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2998 int64_t total_size = 0;
3003 atom.size = INT64_MAX;
3004 while (total_size + 8 <= atom.size && !url_feof(pb)) {
3005 int (*parse)(MOVContext*, AVIOContext*, MOVAtom) = NULL;
3008 if (atom.size >= 8) {
3009 a.size = avio_rb32(pb);
3010 a.type = avio_rl32(pb);
3011 if (atom.type != MKTAG('r','o','o','t') &&
3012 atom.type != MKTAG('m','o','o','v'))
3014 if (a.type == MKTAG('t','r','a','k') || a.type == MKTAG('m','d','a','t'))
3016 av_log(c->fc, AV_LOG_ERROR, "Broken file, trak/mdat not at top-level\n");
3022 if (a.size == 1) { /* 64 bit extended size */
3023 a.size = avio_rb64(pb) - 8;
3027 av_dlog(c->fc, "type: %08x '%.4s' parent:'%.4s' sz: %"PRId64" %"PRId64" %"PRId64"\n",
3028 a.type, (char*)&a.type, (char*)&atom.type, a.size, total_size, atom.size);
3030 a.size = atom.size - total_size + 8;
3035 a.size = FFMIN(a.size, atom.size - total_size);
3037 for (i = 0; mov_default_parse_table[i].type; i++)
3038 if (mov_default_parse_table[i].type == a.type) {
3039 parse = mov_default_parse_table[i].parse;
3043 // container is user data
3044 if (!parse && (atom.type == MKTAG('u','d','t','a') ||
3045 atom.type == MKTAG('i','l','s','t')))
3046 parse = mov_read_udta_string;
3048 if (!parse) { /* skip leaf atoms data */
3049 avio_skip(pb, a.size);
3051 int64_t start_pos = avio_tell(pb);
3053 int err = parse(c, pb, a);
3056 if (c->found_moov && c->found_mdat &&
3057 ((!pb->seekable || c->fc->flags & AVFMT_FLAG_IGNIDX) ||
3058 start_pos + a.size == avio_size(pb))) {
3059 if (!pb->seekable || c->fc->flags & AVFMT_FLAG_IGNIDX)
3060 c->next_root_atom = start_pos + a.size;
3063 left = a.size - avio_tell(pb) + start_pos;
3064 if (left > 0) /* skip garbage at atom end */
3065 avio_skip(pb, left);
3066 else if (left < 0) {
3067 av_log(c->fc, AV_LOG_WARNING,
3068 "overread end of atom '%.4s' by %"PRId64" bytes\n",
3069 (char*)&a.type, -left);
3070 avio_seek(pb, left, SEEK_CUR);
3074 total_size += a.size;
3077 if (total_size < atom.size && atom.size < 0x7ffff)
3078 avio_skip(pb, atom.size - total_size);
3083 static int mov_probe(AVProbeData *p)
3088 int moov_offset = -1;
3090 /* check file header */
3093 /* ignore invalid offset */
3094 if ((offset + 8) > (unsigned int)p->buf_size)
3096 tag = AV_RL32(p->buf + offset + 4);
3098 /* check for obvious tags */
3099 case MKTAG('m','o','o','v'):
3100 moov_offset = offset + 4;
3101 case MKTAG('j','P',' ',' '): /* jpeg 2000 signature */
3102 case MKTAG('m','d','a','t'):
3103 case MKTAG('p','n','o','t'): /* detect movs with preview pics like ew.mov and april.mov */
3104 case MKTAG('u','d','t','a'): /* Packet Video PVAuthor adds this and a lot of more junk */
3105 case MKTAG('f','t','y','p'):
3106 if (AV_RB32(p->buf+offset) < 8 &&
3107 (AV_RB32(p->buf+offset) != 1 ||
3108 offset + 12 > (unsigned int)p->buf_size ||
3109 AV_RB64(p->buf+offset + 8) == 0)) {
3110 score = FFMAX(score, AVPROBE_SCORE_EXTENSION);
3112 score = AVPROBE_SCORE_MAX;
3114 offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset;
3116 /* those are more common words, so rate then a bit less */
3117 case MKTAG('e','d','i','w'): /* xdcam files have reverted first tags */
3118 case MKTAG('w','i','d','e'):
3119 case MKTAG('f','r','e','e'):
3120 case MKTAG('j','u','n','k'):
3121 case MKTAG('p','i','c','t'):
3122 score = FFMAX(score, AVPROBE_SCORE_MAX - 5);
3123 offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset;
3125 case MKTAG(0x82,0x82,0x7f,0x7d):
3126 case MKTAG('s','k','i','p'):
3127 case MKTAG('u','u','i','d'):
3128 case MKTAG('p','r','f','l'):
3129 /* if we only find those cause probedata is too small at least rate them */
3130 score = FFMAX(score, AVPROBE_SCORE_EXTENSION);
3131 offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset;
3134 offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset;
3137 if(score > AVPROBE_SCORE_MAX - 50 && moov_offset != -1) {
3138 /* moov atom in the header - we should make sure that this is not a
3139 * MOV-packed MPEG-PS */
3140 offset = moov_offset;
3142 while(offset < (p->buf_size - 16)){ /* Sufficient space */
3143 /* We found an actual hdlr atom */
3144 if(AV_RL32(p->buf + offset ) == MKTAG('h','d','l','r') &&
3145 AV_RL32(p->buf + offset + 8) == MKTAG('m','h','l','r') &&
3146 AV_RL32(p->buf + offset + 12) == MKTAG('M','P','E','G')){
3147 av_log(NULL, AV_LOG_WARNING, "Found media data tag MPEG indicating this is a MOV-packed MPEG-PS.\n");
3148 /* We found a media handler reference atom describing an
3149 * MPEG-PS-in-MOV, return a
3150 * low score to force expanding the probe window until
3151 * mpegps_probe finds what it needs */
3162 // must be done after parsing all trak because there's no order requirement
3163 static void mov_read_chapters(AVFormatContext *s)
3165 MOVContext *mov = s->priv_data;
3166 AVStream *st = NULL;
3167 MOVStreamContext *sc;
3171 for (i = 0; i < s->nb_streams; i++)
3172 if (s->streams[i]->id == mov->chapter_track) {
3177 av_log(s, AV_LOG_ERROR, "Referenced QT chapter track not found\n");
3181 st->discard = AVDISCARD_ALL;
3183 cur_pos = avio_tell(sc->pb);
3185 for (i = 0; i < st->nb_index_entries; i++) {
3186 AVIndexEntry *sample = &st->index_entries[i];
3187 int64_t end = i+1 < st->nb_index_entries ? st->index_entries[i+1].timestamp : st->duration;
3192 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
3193 av_log(s, AV_LOG_ERROR, "Chapter %d not found in file\n", i);
3197 // the first two bytes are the length of the title
3198 len = avio_rb16(sc->pb);
3199 if (len > sample->size-2)
3201 title_len = 2*len + 1;
3202 if (!(title = av_mallocz(title_len)))
3205 // The samples could theoretically be in any encoding if there's an encd
3206 // atom following, but in practice are only utf-8 or utf-16, distinguished
3207 // instead by the presence of a BOM
3211 ch = avio_rb16(sc->pb);
3213 avio_get_str16be(sc->pb, len, title, title_len);
3214 else if (ch == 0xfffe)
3215 avio_get_str16le(sc->pb, len, title, title_len);
3218 if (len == 1 || len == 2)
3221 avio_get_str(sc->pb, INT_MAX, title + 2, len - 1);
3225 avpriv_new_chapter(s, i, st->time_base, sample->timestamp, end, title);
3229 avio_seek(sc->pb, cur_pos, SEEK_SET);
3232 static int parse_timecode_in_framenum_format(AVFormatContext *s, AVStream *st,
3233 uint32_t value, int flags)
3236 char buf[AV_TIMECODE_STR_SIZE];
3237 AVRational rate = {st->codec->time_base.den,
3238 st->codec->time_base.num};
3239 int ret = av_timecode_init(&tc, rate, flags, 0, s);
3242 av_dict_set(&st->metadata, "timecode",
3243 av_timecode_make_string(&tc, buf, value), 0);
3247 static int mov_read_timecode_track(AVFormatContext *s, AVStream *st)
3249 MOVStreamContext *sc = st->priv_data;
3251 int64_t cur_pos = avio_tell(sc->pb);
3254 if (!st->nb_index_entries)
3257 avio_seek(sc->pb, st->index_entries->pos, SEEK_SET);
3258 value = avio_rb32(s->pb);
3260 if (sc->tmcd_flags & 0x0001) flags |= AV_TIMECODE_FLAG_DROPFRAME;
3261 if (sc->tmcd_flags & 0x0002) flags |= AV_TIMECODE_FLAG_24HOURSMAX;
3262 if (sc->tmcd_flags & 0x0004) flags |= AV_TIMECODE_FLAG_ALLOWNEGATIVE;
3264 /* Assume Counter flag is set to 1 in tmcd track (even though it is likely
3265 * not the case) and thus assume "frame number format" instead of QT one.
3266 * No sample with tmcd track can be found with a QT timecode at the moment,
3267 * despite what the tmcd track "suggests" (Counter flag set to 0 means QT
3269 parse_timecode_in_framenum_format(s, st, value, flags);
3271 avio_seek(sc->pb, cur_pos, SEEK_SET);
3275 static int mov_read_close(AVFormatContext *s)
3277 MOVContext *mov = s->priv_data;
3280 for (i = 0; i < s->nb_streams; i++) {
3281 AVStream *st = s->streams[i];
3282 MOVStreamContext *sc = st->priv_data;
3284 av_freep(&sc->ctts_data);
3285 for (j = 0; j < sc->drefs_count; j++) {
3286 av_freep(&sc->drefs[j].path);
3287 av_freep(&sc->drefs[j].dir);
3289 av_freep(&sc->drefs);
3290 if (!sc->pb_is_copied)
3294 av_freep(&sc->chunk_offsets);
3295 av_freep(&sc->stsc_data);
3296 av_freep(&sc->sample_sizes);
3297 av_freep(&sc->keyframes);
3298 av_freep(&sc->stts_data);
3299 av_freep(&sc->stps_data);
3300 av_freep(&sc->rap_group);
3303 if (mov->dv_demux) {
3304 for (i = 0; i < mov->dv_fctx->nb_streams; i++) {
3305 av_freep(&mov->dv_fctx->streams[i]->codec);
3306 av_freep(&mov->dv_fctx->streams[i]);
3308 av_freep(&mov->dv_fctx);
3309 av_freep(&mov->dv_demux);
3312 av_freep(&mov->trex_data);
3313 av_freep(&mov->bitrates);
3318 static int tmcd_is_referenced(AVFormatContext *s, int tmcd_id)
3322 for (i = 0; i < s->nb_streams; i++) {
3323 AVStream *st = s->streams[i];
3324 MOVStreamContext *sc = st->priv_data;
3326 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
3327 sc->timecode_track == tmcd_id)
3333 /* look for a tmcd track not referenced by any video track, and export it globally */
3334 static void export_orphan_timecode(AVFormatContext *s)
3338 for (i = 0; i < s->nb_streams; i++) {
3339 AVStream *st = s->streams[i];
3341 if (st->codec->codec_tag == MKTAG('t','m','c','d') &&
3342 !tmcd_is_referenced(s, i + 1)) {
3343 AVDictionaryEntry *tcr = av_dict_get(st->metadata, "timecode", NULL, 0);
3345 av_dict_set(&s->metadata, "timecode", tcr->value, 0);
3352 static int mov_read_header(AVFormatContext *s)
3354 MOVContext *mov = s->priv_data;
3355 AVIOContext *pb = s->pb;
3357 MOVAtom atom = { AV_RL32("root") };
3360 /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
3362 atom.size = avio_size(pb);
3364 atom.size = INT64_MAX;
3366 /* check MOV header */
3367 if ((err = mov_read_default(mov, pb, atom)) < 0) {
3368 av_log(s, AV_LOG_ERROR, "error reading header: %d\n", err);
3372 if (!mov->found_moov) {
3373 av_log(s, AV_LOG_ERROR, "moov atom not found\n");
3375 return AVERROR_INVALIDDATA;
3377 av_dlog(mov->fc, "on_parse_exit_offset=%"PRId64"\n", avio_tell(pb));
3380 if (mov->chapter_track > 0)
3381 mov_read_chapters(s);
3382 for (i = 0; i < s->nb_streams; i++)
3383 if (s->streams[i]->codec->codec_tag == AV_RL32("tmcd"))
3384 mov_read_timecode_track(s, s->streams[i]);
3387 /* copy timecode metadata from tmcd tracks to the related video streams */
3388 for (i = 0; i < s->nb_streams; i++) {
3389 AVStream *st = s->streams[i];
3390 MOVStreamContext *sc = st->priv_data;
3391 if (sc->timecode_track > 0) {
3392 AVDictionaryEntry *tcr;
3393 int tmcd_st_id = -1;
3395 for (j = 0; j < s->nb_streams; j++)
3396 if (s->streams[j]->id == sc->timecode_track)
3399 if (tmcd_st_id < 0 || tmcd_st_id == i)
3401 tcr = av_dict_get(s->streams[tmcd_st_id]->metadata, "timecode", NULL, 0);
3403 av_dict_set(&st->metadata, "timecode", tcr->value, 0);
3406 export_orphan_timecode(s);
3408 for (i = 0; i < s->nb_streams; i++) {
3409 AVStream *st = s->streams[i];
3410 MOVStreamContext *sc = st->priv_data;
3411 fix_timescale(mov, sc);
3412 if(st->codec->codec_type == AVMEDIA_TYPE_AUDIO && st->codec->codec_id == AV_CODEC_ID_AAC) {
3413 st->skip_samples = sc->start_pad;
3415 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && sc->nb_frames_for_fps > 0 && sc->duration_for_fps > 0)
3416 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
3417 sc->time_scale*sc->nb_frames_for_fps, sc->duration_for_fps, INT_MAX);
3420 if (mov->trex_data) {
3421 for (i = 0; i < s->nb_streams; i++) {
3422 AVStream *st = s->streams[i];
3423 MOVStreamContext *sc = st->priv_data;
3424 if (st->duration > 0)
3425 st->codec->bit_rate = sc->data_size * 8 * sc->time_scale / st->duration;
3429 for (i = 0; i < mov->bitrates_count && i < s->nb_streams; i++) {
3430 if (mov->bitrates[i]) {
3431 s->streams[i]->codec->bit_rate = mov->bitrates[i];
3435 ff_rfps_calculate(s);
3440 static AVIndexEntry *mov_find_next_sample(AVFormatContext *s, AVStream **st)
3442 AVIndexEntry *sample = NULL;
3443 int64_t best_dts = INT64_MAX;
3445 for (i = 0; i < s->nb_streams; i++) {
3446 AVStream *avst = s->streams[i];
3447 MOVStreamContext *msc = avst->priv_data;
3448 if (msc->pb && msc->current_sample < avst->nb_index_entries) {
3449 AVIndexEntry *current_sample = &avst->index_entries[msc->current_sample];
3450 int64_t dts = av_rescale(current_sample->timestamp, AV_TIME_BASE, msc->time_scale);
3451 av_dlog(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
3452 if (!sample || (!s->pb->seekable && current_sample->pos < sample->pos) ||
3454 ((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb &&
3455 ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
3456 (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) {
3457 sample = current_sample;
3466 static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
3468 MOVContext *mov = s->priv_data;
3469 MOVStreamContext *sc;
3470 AVIndexEntry *sample;
3471 AVStream *st = NULL;
3475 sample = mov_find_next_sample(s, &st);
3477 mov->found_mdat = 0;
3478 if (!mov->next_root_atom)
3480 avio_seek(s->pb, mov->next_root_atom, SEEK_SET);
3481 mov->next_root_atom = 0;
3482 if (mov_read_default(mov, s->pb, (MOVAtom){ AV_RL32("root"), INT64_MAX }) < 0 ||
3485 av_dlog(s, "read fragments, offset 0x%"PRIx64"\n", avio_tell(s->pb));
3489 /* must be done just before reading, to avoid infinite loop on sample */
3490 sc->current_sample++;
3492 if (mov->next_root_atom) {
3493 sample->pos = FFMIN(sample->pos, mov->next_root_atom);
3494 sample->size = FFMIN(sample->size, (mov->next_root_atom - sample->pos));
3497 if (st->discard != AVDISCARD_ALL) {
3498 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
3499 av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
3500 sc->ffindex, sample->pos);
3501 return AVERROR_INVALIDDATA;
3503 ret = av_get_packet(sc->pb, pkt, sample->size);
3506 if (sc->has_palette) {
3509 pal = av_packet_new_side_data(pkt, AV_PKT_DATA_PALETTE, AVPALETTE_SIZE);
3511 av_log(mov->fc, AV_LOG_ERROR, "Cannot append palette to packet\n");
3513 memcpy(pal, sc->palette, AVPALETTE_SIZE);
3514 sc->has_palette = 0;
3517 #if CONFIG_DV_DEMUXER
3518 if (mov->dv_demux && sc->dv_audio_container) {
3519 avpriv_dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size, pkt->pos);
3522 ret = avpriv_dv_get_packet(mov->dv_demux, pkt);
3529 pkt->stream_index = sc->ffindex;
3530 pkt->dts = sample->timestamp;
3531 if (sc->ctts_data && sc->ctts_index < sc->ctts_count) {
3532 pkt->pts = pkt->dts + sc->dts_shift + sc->ctts_data[sc->ctts_index].duration;
3533 /* update ctts context */
3535 if (sc->ctts_index < sc->ctts_count &&
3536 sc->ctts_data[sc->ctts_index].count == sc->ctts_sample) {
3538 sc->ctts_sample = 0;
3541 pkt->dts = AV_NOPTS_VALUE;
3543 int64_t next_dts = (sc->current_sample < st->nb_index_entries) ?
3544 st->index_entries[sc->current_sample].timestamp : st->duration;
3545 pkt->duration = next_dts - pkt->dts;
3546 pkt->pts = pkt->dts;
3548 if (st->discard == AVDISCARD_ALL)
3550 pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? AV_PKT_FLAG_KEY : 0;
3551 pkt->pos = sample->pos;
3552 av_dlog(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n",
3553 pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
3557 static int mov_seek_stream(AVFormatContext *s, AVStream *st, int64_t timestamp, int flags)
3559 MOVStreamContext *sc = st->priv_data;
3560 int sample, time_sample;
3563 sample = av_index_search_timestamp(st, timestamp, flags);
3564 av_dlog(s, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
3565 if (sample < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
3567 if (sample < 0) /* not sure what to do */
3568 return AVERROR_INVALIDDATA;
3569 sc->current_sample = sample;
3570 av_dlog(s, "stream %d, found sample %d\n", st->index, sc->current_sample);
3571 /* adjust ctts index */
3572 if (sc->ctts_data) {
3574 for (i = 0; i < sc->ctts_count; i++) {
3575 int next = time_sample + sc->ctts_data[i].count;
3576 if (next > sc->current_sample) {
3578 sc->ctts_sample = sc->current_sample - time_sample;
3587 static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
3590 int64_t seek_timestamp, timestamp;
3594 if (stream_index >= s->nb_streams)
3595 return AVERROR_INVALIDDATA;
3597 st = s->streams[stream_index];
3598 sample = mov_seek_stream(s, st, sample_time, flags);
3602 /* adjust seek timestamp to found sample timestamp */
3603 seek_timestamp = st->index_entries[sample].timestamp;
3605 for (i = 0; i < s->nb_streams; i++) {
3606 MOVStreamContext *sc = s->streams[i]->priv_data;
3608 st->skip_samples = (sample_time <= 0) ? sc->start_pad : 0;
3610 if (stream_index == i)
3613 timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
3614 mov_seek_stream(s, st, timestamp, flags);
3619 static const AVOption options[] = {
3620 {"use_absolute_path",
3621 "allow using absolute path when opening alias, this is a possible security issue",
3622 offsetof(MOVContext, use_absolute_path), FF_OPT_TYPE_INT, {.i64 = 0},
3623 0, 1, AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_DECODING_PARAM},
3624 {"ignore_editlist", "", offsetof(MOVContext, ignore_editlist), FF_OPT_TYPE_INT, {.i64 = 0},
3625 0, 1, AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_DECODING_PARAM},
3629 static const AVClass mov_class = {
3630 .class_name = "mov,mp4,m4a,3gp,3g2,mj2",
3631 .item_name = av_default_item_name,
3633 .version = LIBAVUTIL_VERSION_INT,
3636 AVInputFormat ff_mov_demuxer = {
3637 .name = "mov,mp4,m4a,3gp,3g2,mj2",
3638 .long_name = NULL_IF_CONFIG_SMALL("QuickTime / MOV"),
3639 .priv_data_size = sizeof(MOVContext),
3640 .read_probe = mov_probe,
3641 .read_header = mov_read_header,
3642 .read_packet = mov_read_packet,
3643 .read_close = mov_read_close,
3644 .read_seek = mov_read_seek,
3645 .priv_class = &mov_class,
3646 .flags = AVFMT_NO_BYTE_SEEK,