3 * Copyright (c) 2001 Fabrice Bellard
4 * Copyright (c) 2009 Baptiste Coudurier <baptiste dot coudurier at gmail dot com>
6 * This file is part of Libav.
8 * Libav is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * Libav is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with Libav; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
26 //#define DEBUG_METADATA
27 //#define MOV_EXPORT_ALL_METADATA
29 #include "libavutil/intreadwrite.h"
30 #include "libavutil/avstring.h"
32 #include "avio_internal.h"
35 #include "libavcodec/get_bits.h"
42 * First version by Francois Revol revol@free.fr
43 * Seek function by Gael Chardon gael.dev@4now.net
45 * Features and limitations:
46 * - reads most of the QT files I have (at least the structure),
47 * Sample QuickTime files with mp3 audio can be found at: http://www.3ivx.com/showcase.html
48 * - the code is quite ugly... maybe I won't do it recursive next time :-)
50 * Funny I didn't know about http://sourceforge.net/projects/qt-ffmpeg/
51 * when coding this :) (it's a writer anyway)
53 * Reference documents:
54 * http://www.geocities.com/xhelmboyx/quicktime/formats/qtm-layout.txt
56 * http://developer.apple.com/documentation/QuickTime/QTFF/
57 * http://developer.apple.com/documentation/QuickTime/QTFF/qtff.pdf
58 * QuickTime is a trademark of Apple (AFAIK :))
61 #include "qtpalette.h"
67 /* XXX: it's the first time I make a recursive parser I think... sorry if it's ugly :P */
69 /* those functions parse an atom */
71 0: continue to parse next atom
72 <0: error occurred, exit
74 /* links atom IDs to parse functions */
75 typedef struct MOVParseTableEntry {
77 int (*parse)(MOVContext *ctx, AVIOContext *pb, MOVAtom atom);
80 static const MOVParseTableEntry mov_default_parse_table[];
82 static int mov_metadata_trkn(MOVContext *c, AVIOContext *pb, unsigned len)
86 avio_rb16(pb); // unknown
87 snprintf(buf, sizeof(buf), "%d", avio_rb16(pb));
88 av_metadata_set2(&c->fc->metadata, "track", buf, 0);
90 avio_rb16(pb); // total tracks
95 static const uint32_t mac_to_unicode[128] = {
96 0x00C4,0x00C5,0x00C7,0x00C9,0x00D1,0x00D6,0x00DC,0x00E1,
97 0x00E0,0x00E2,0x00E4,0x00E3,0x00E5,0x00E7,0x00E9,0x00E8,
98 0x00EA,0x00EB,0x00ED,0x00EC,0x00EE,0x00EF,0x00F1,0x00F3,
99 0x00F2,0x00F4,0x00F6,0x00F5,0x00FA,0x00F9,0x00FB,0x00FC,
100 0x2020,0x00B0,0x00A2,0x00A3,0x00A7,0x2022,0x00B6,0x00DF,
101 0x00AE,0x00A9,0x2122,0x00B4,0x00A8,0x2260,0x00C6,0x00D8,
102 0x221E,0x00B1,0x2264,0x2265,0x00A5,0x00B5,0x2202,0x2211,
103 0x220F,0x03C0,0x222B,0x00AA,0x00BA,0x03A9,0x00E6,0x00F8,
104 0x00BF,0x00A1,0x00AC,0x221A,0x0192,0x2248,0x2206,0x00AB,
105 0x00BB,0x2026,0x00A0,0x00C0,0x00C3,0x00D5,0x0152,0x0153,
106 0x2013,0x2014,0x201C,0x201D,0x2018,0x2019,0x00F7,0x25CA,
107 0x00FF,0x0178,0x2044,0x20AC,0x2039,0x203A,0xFB01,0xFB02,
108 0x2021,0x00B7,0x201A,0x201E,0x2030,0x00C2,0x00CA,0x00C1,
109 0x00CB,0x00C8,0x00CD,0x00CE,0x00CF,0x00CC,0x00D3,0x00D4,
110 0xF8FF,0x00D2,0x00DA,0x00DB,0x00D9,0x0131,0x02C6,0x02DC,
111 0x00AF,0x02D8,0x02D9,0x02DA,0x00B8,0x02DD,0x02DB,0x02C7,
114 static int mov_read_mac_string(MOVContext *c, AVIOContext *pb, int len,
115 char *dst, int dstlen)
118 char *end = dst+dstlen-1;
121 for (i = 0; i < len; i++) {
122 uint8_t t, c = avio_r8(pb);
123 if (c < 0x80 && p < end)
126 PUT_UTF8(mac_to_unicode[c-0x80], t, if (p < end) *p++ = t;);
132 static int mov_read_udta_string(MOVContext *c, AVIOContext *pb, MOVAtom atom)
134 #ifdef MOV_EXPORT_ALL_METADATA
137 char str[1024], key2[16], language[4] = {0};
138 const char *key = NULL;
139 uint16_t str_size, langcode = 0;
140 uint32_t data_type = 0;
141 int (*parse)(MOVContext*, AVIOContext*, unsigned) = NULL;
144 case MKTAG(0xa9,'n','a','m'): key = "title"; break;
145 case MKTAG(0xa9,'a','u','t'):
146 case MKTAG(0xa9,'A','R','T'): key = "artist"; break;
147 case MKTAG(0xa9,'w','r','t'): key = "composer"; break;
148 case MKTAG( 'c','p','r','t'):
149 case MKTAG(0xa9,'c','p','y'): key = "copyright"; break;
150 case MKTAG(0xa9,'c','m','t'):
151 case MKTAG(0xa9,'i','n','f'): key = "comment"; break;
152 case MKTAG(0xa9,'a','l','b'): key = "album"; break;
153 case MKTAG(0xa9,'d','a','y'): key = "date"; break;
154 case MKTAG(0xa9,'g','e','n'): key = "genre"; break;
155 case MKTAG(0xa9,'t','o','o'):
156 case MKTAG(0xa9,'s','w','r'): key = "encoder"; break;
157 case MKTAG(0xa9,'e','n','c'): key = "encoder"; break;
158 case MKTAG( 'd','e','s','c'): key = "description";break;
159 case MKTAG( 'l','d','e','s'): key = "synopsis"; break;
160 case MKTAG( 't','v','s','h'): key = "show"; break;
161 case MKTAG( 't','v','e','n'): key = "episode_id";break;
162 case MKTAG( 't','v','n','n'): key = "network"; break;
163 case MKTAG( 't','r','k','n'): key = "track";
164 parse = mov_metadata_trkn; break;
167 if (c->itunes_metadata && atom.size > 8) {
168 int data_size = avio_rb32(pb);
169 int tag = avio_rl32(pb);
170 if (tag == MKTAG('d','a','t','a')) {
171 data_type = avio_rb32(pb); // type
172 avio_rb32(pb); // unknown
173 str_size = data_size - 16;
176 } else if (atom.size > 4 && key && !c->itunes_metadata) {
177 str_size = avio_rb16(pb); // string length
178 langcode = avio_rb16(pb);
179 ff_mov_lang_to_iso639(langcode, language);
182 str_size = atom.size;
184 #ifdef MOV_EXPORT_ALL_METADATA
186 snprintf(tmp_key, 5, "%.4s", (char*)&atom.type);
196 str_size = FFMIN3(sizeof(str)-1, str_size, atom.size);
199 parse(c, pb, str_size);
201 if (data_type == 3 || (data_type == 0 && langcode < 0x800)) { // MAC Encoded
202 mov_read_mac_string(c, pb, str_size, str, sizeof(str));
204 avio_read(pb, str, str_size);
207 av_metadata_set2(&c->fc->metadata, key, str, 0);
208 if (*language && strcmp(language, "und")) {
209 snprintf(key2, sizeof(key2), "%s-%s", key, language);
210 av_metadata_set2(&c->fc->metadata, key2, str, 0);
213 #ifdef DEBUG_METADATA
214 av_log(c->fc, AV_LOG_DEBUG, "lang \"%3s\" ", language);
215 av_log(c->fc, AV_LOG_DEBUG, "tag \"%s\" value \"%s\" atom \"%.4s\" %d %lld\n",
216 key, str, (char*)&atom.type, str_size, atom.size);
222 static int mov_read_chpl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
225 int i, nb_chapters, str_len, version;
228 if ((atom.size -= 5) < 0)
231 version = avio_r8(pb);
234 avio_rb32(pb); // ???
235 nb_chapters = avio_r8(pb);
237 for (i = 0; i < nb_chapters; i++) {
241 start = avio_rb64(pb);
242 str_len = avio_r8(pb);
244 if ((atom.size -= 9+str_len) < 0)
247 avio_read(pb, str, str_len);
249 ff_new_chapter(c->fc, i, (AVRational){1,10000000}, start, AV_NOPTS_VALUE, str);
254 static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom)
256 int64_t total_size = 0;
261 atom.size = INT64_MAX;
262 while (total_size + 8 < atom.size && !pb->eof_reached) {
263 int (*parse)(MOVContext*, AVIOContext*, MOVAtom) = NULL;
267 a.size = avio_rb32(pb);
268 a.type = avio_rl32(pb);
270 av_dlog(c->fc, "type: %08x '%.4s' parent:'%.4s' sz: %"PRId64" %"PRId64" %"PRId64"\n",
271 a.type, (char*)&a.type, (char*)&atom.type, a.size, total_size, atom.size);
273 if (a.size == 1) { /* 64 bit extended size */
274 a.size = avio_rb64(pb) - 8;
278 a.size = atom.size - total_size;
285 a.size = FFMIN(a.size, atom.size - total_size);
287 for (i = 0; mov_default_parse_table[i].type; i++)
288 if (mov_default_parse_table[i].type == a.type) {
289 parse = mov_default_parse_table[i].parse;
293 // container is user data
294 if (!parse && (atom.type == MKTAG('u','d','t','a') ||
295 atom.type == MKTAG('i','l','s','t')))
296 parse = mov_read_udta_string;
298 if (!parse) { /* skip leaf atoms data */
299 avio_skip(pb, a.size);
301 int64_t start_pos = avio_tell(pb);
303 int err = parse(c, pb, a);
306 if (c->found_moov && c->found_mdat &&
307 (!pb->seekable || start_pos + a.size == avio_size(pb)))
309 left = a.size - avio_tell(pb) + start_pos;
310 if (left > 0) /* skip garbage at atom end */
314 total_size += a.size;
317 if (total_size < atom.size && atom.size < 0x7ffff)
318 avio_skip(pb, atom.size - total_size);
323 static int mov_read_dref(MOVContext *c, AVIOContext *pb, MOVAtom atom)
326 MOVStreamContext *sc;
329 if (c->fc->nb_streams < 1)
331 st = c->fc->streams[c->fc->nb_streams-1];
334 avio_rb32(pb); // version + flags
335 entries = avio_rb32(pb);
336 if (entries >= UINT_MAX / sizeof(*sc->drefs))
338 sc->drefs = av_mallocz(entries * sizeof(*sc->drefs));
340 return AVERROR(ENOMEM);
341 sc->drefs_count = entries;
343 for (i = 0; i < sc->drefs_count; i++) {
344 MOVDref *dref = &sc->drefs[i];
345 uint32_t size = avio_rb32(pb);
346 int64_t next = avio_tell(pb) + size - 4;
351 dref->type = avio_rl32(pb);
352 avio_rb32(pb); // version + flags
353 av_dlog(c->fc, "type %.4s size %d\n", (char*)&dref->type, size);
355 if (dref->type == MKTAG('a','l','i','s') && size > 150) {
356 /* macintosh alias record */
357 uint16_t volume_len, len;
362 volume_len = avio_r8(pb);
363 volume_len = FFMIN(volume_len, 27);
364 avio_read(pb, dref->volume, 27);
365 dref->volume[volume_len] = 0;
366 av_log(c->fc, AV_LOG_DEBUG, "volume %s, len %d\n", dref->volume, volume_len);
371 len = FFMIN(len, 63);
372 avio_read(pb, dref->filename, 63);
373 dref->filename[len] = 0;
374 av_log(c->fc, AV_LOG_DEBUG, "filename %s, len %d\n", dref->filename, len);
378 /* read next level up_from_alias/down_to_target */
379 dref->nlvl_from = avio_rb16(pb);
380 dref->nlvl_to = avio_rb16(pb);
381 av_log(c->fc, AV_LOG_DEBUG, "nlvl from %d, nlvl to %d\n",
382 dref->nlvl_from, dref->nlvl_to);
386 for (type = 0; type != -1 && avio_tell(pb) < next; ) {
387 type = avio_rb16(pb);
389 av_log(c->fc, AV_LOG_DEBUG, "type %d, len %d\n", type, len);
392 if (type == 2) { // absolute path
394 dref->path = av_mallocz(len+1);
396 return AVERROR(ENOMEM);
397 avio_read(pb, dref->path, len);
398 if (len > volume_len && !strncmp(dref->path, dref->volume, volume_len)) {
400 memmove(dref->path, dref->path+volume_len, len);
403 for (j = 0; j < len; j++)
404 if (dref->path[j] == ':')
406 av_log(c->fc, AV_LOG_DEBUG, "path %s\n", dref->path);
407 } else if (type == 0) { // directory name
409 dref->dir = av_malloc(len+1);
411 return AVERROR(ENOMEM);
412 avio_read(pb, dref->dir, len);
414 for (j = 0; j < len; j++)
415 if (dref->dir[j] == ':')
417 av_log(c->fc, AV_LOG_DEBUG, "dir %s\n", dref->dir);
422 avio_seek(pb, next, SEEK_SET);
427 static int mov_read_hdlr(MOVContext *c, AVIOContext *pb, MOVAtom atom)
433 if (c->fc->nb_streams < 1) // meta before first trak
436 st = c->fc->streams[c->fc->nb_streams-1];
438 avio_r8(pb); /* version */
439 avio_rb24(pb); /* flags */
442 ctype = avio_rl32(pb);
443 type = avio_rl32(pb); /* component subtype */
445 av_dlog(c->fc, "ctype= %.4s (0x%08x)\n", (char*)&ctype, ctype);
446 av_dlog(c->fc, "stype= %.4s\n", (char*)&type);
448 if (type == MKTAG('v','i','d','e'))
449 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
450 else if(type == MKTAG('s','o','u','n'))
451 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
452 else if(type == MKTAG('m','1','a',' '))
453 st->codec->codec_id = CODEC_ID_MP2;
454 else if(type == MKTAG('s','u','b','p'))
455 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
457 avio_rb32(pb); /* component manufacture */
458 avio_rb32(pb); /* component flags */
459 avio_rb32(pb); /* component flags mask */
464 int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb, MOVAtom atom)
469 if (fc->nb_streams < 1)
471 st = fc->streams[fc->nb_streams-1];
473 avio_rb32(pb); /* version + flags */
474 len = ff_mp4_read_descr(fc, pb, &tag);
475 if (tag == MP4ESDescrTag) {
476 avio_rb16(pb); /* ID */
477 avio_r8(pb); /* priority */
479 avio_rb16(pb); /* ID */
481 len = ff_mp4_read_descr(fc, pb, &tag);
482 if (tag == MP4DecConfigDescrTag)
483 ff_mp4_read_dec_config_descr(fc, st, pb);
487 static int mov_read_esds(MOVContext *c, AVIOContext *pb, MOVAtom atom)
489 return ff_mov_read_esds(c->fc, pb, atom);
492 static int mov_read_dac3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
495 int ac3info, acmod, lfeon, bsmod;
497 if (c->fc->nb_streams < 1)
499 st = c->fc->streams[c->fc->nb_streams-1];
501 ac3info = avio_rb24(pb);
502 bsmod = (ac3info >> 14) & 0x7;
503 acmod = (ac3info >> 11) & 0x7;
504 lfeon = (ac3info >> 10) & 0x1;
505 st->codec->channels = ((int[]){2,1,2,3,3,4,4,5})[acmod] + lfeon;
506 st->codec->audio_service_type = bsmod;
507 if (st->codec->channels > 1 && bsmod == 0x7)
508 st->codec->audio_service_type = AV_AUDIO_SERVICE_TYPE_KARAOKE;
513 static int mov_read_pasp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
515 const int num = avio_rb32(pb);
516 const int den = avio_rb32(pb);
519 if (c->fc->nb_streams < 1)
521 st = c->fc->streams[c->fc->nb_streams-1];
523 if ((st->sample_aspect_ratio.den != 1 || st->sample_aspect_ratio.num) && // default
524 (den != st->sample_aspect_ratio.den || num != st->sample_aspect_ratio.num)) {
525 av_log(c->fc, AV_LOG_WARNING,
526 "sample aspect ratio already set to %d:%d, ignoring 'pasp' atom (%d:%d)\n",
527 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
529 } else if (den != 0) {
530 st->sample_aspect_ratio.num = num;
531 st->sample_aspect_ratio.den = den;
536 /* this atom contains actual media data */
537 static int mov_read_mdat(MOVContext *c, AVIOContext *pb, MOVAtom atom)
539 if(atom.size == 0) /* wrong one (MP4) */
542 return 0; /* now go for moov */
545 /* read major brand, minor version and compatible brands and store them as metadata */
546 static int mov_read_ftyp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
550 char minor_ver_str[11]; /* 32 bit integer -> 10 digits + null */
551 char* comp_brands_str;
552 uint8_t type[5] = {0};
554 avio_read(pb, type, 4);
555 if (strcmp(type, "qt "))
557 av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
558 av_metadata_set2(&c->fc->metadata, "major_brand", type, 0);
559 minor_ver = avio_rb32(pb); /* minor version */
560 snprintf(minor_ver_str, sizeof(minor_ver_str), "%d", minor_ver);
561 av_metadata_set2(&c->fc->metadata, "minor_version", minor_ver_str, 0);
563 comp_brand_size = atom.size - 8;
564 if (comp_brand_size < 0)
566 comp_brands_str = av_malloc(comp_brand_size + 1); /* Add null terminator */
567 if (!comp_brands_str)
568 return AVERROR(ENOMEM);
569 avio_read(pb, comp_brands_str, comp_brand_size);
570 comp_brands_str[comp_brand_size] = 0;
571 av_metadata_set2(&c->fc->metadata, "compatible_brands", comp_brands_str, 0);
572 av_freep(&comp_brands_str);
577 /* this atom should contain all header atoms */
578 static int mov_read_moov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
580 if (mov_read_default(c, pb, atom) < 0)
582 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
583 /* so we don't parse the whole file if over a network */
585 return 0; /* now go for mdat */
588 static int mov_read_moof(MOVContext *c, AVIOContext *pb, MOVAtom atom)
590 c->fragment.moof_offset = avio_tell(pb) - 8;
591 av_dlog(c->fc, "moof offset %llx\n", c->fragment.moof_offset);
592 return mov_read_default(c, pb, atom);
595 static void mov_metadata_creation_time(AVMetadata **metadata, time_t time)
600 time -= 2082844800; /* seconds between 1904-01-01 and Epoch */
603 strftime(buffer, sizeof(buffer), "%Y-%m-%d %H:%M:%S", ptm);
604 av_metadata_set2(metadata, "creation_time", buffer, 0);
608 static int mov_read_mdhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
611 MOVStreamContext *sc;
613 char language[4] = {0};
615 time_t creation_time;
617 if (c->fc->nb_streams < 1)
619 st = c->fc->streams[c->fc->nb_streams-1];
622 version = avio_r8(pb);
624 return -1; /* unsupported */
626 avio_rb24(pb); /* flags */
628 creation_time = avio_rb64(pb);
631 creation_time = avio_rb32(pb);
632 avio_rb32(pb); /* modification time */
634 mov_metadata_creation_time(&st->metadata, creation_time);
636 sc->time_scale = avio_rb32(pb);
637 st->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
639 lang = avio_rb16(pb); /* language */
640 if (ff_mov_lang_to_iso639(lang, language))
641 av_metadata_set2(&st->metadata, "language", language, 0);
642 avio_rb16(pb); /* quality */
647 static int mov_read_mvhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
649 time_t creation_time;
650 int version = avio_r8(pb); /* version */
651 avio_rb24(pb); /* flags */
654 creation_time = avio_rb64(pb);
657 creation_time = avio_rb32(pb);
658 avio_rb32(pb); /* modification time */
660 mov_metadata_creation_time(&c->fc->metadata, creation_time);
661 c->time_scale = avio_rb32(pb); /* time scale */
663 av_dlog(c->fc, "time scale = %i\n", c->time_scale);
665 c->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
666 avio_rb32(pb); /* preferred scale */
668 avio_rb16(pb); /* preferred volume */
670 avio_skip(pb, 10); /* reserved */
672 avio_skip(pb, 36); /* display matrix */
674 avio_rb32(pb); /* preview time */
675 avio_rb32(pb); /* preview duration */
676 avio_rb32(pb); /* poster time */
677 avio_rb32(pb); /* selection time */
678 avio_rb32(pb); /* selection duration */
679 avio_rb32(pb); /* current time */
680 avio_rb32(pb); /* next track ID */
685 static int mov_read_smi(MOVContext *c, AVIOContext *pb, MOVAtom atom)
689 if (c->fc->nb_streams < 1)
691 st = c->fc->streams[c->fc->nb_streams-1];
693 if((uint64_t)atom.size > (1<<30))
696 // currently SVQ3 decoder expect full STSD header - so let's fake it
697 // this should be fixed and just SMI header should be passed
698 av_free(st->codec->extradata);
699 st->codec->extradata = av_mallocz(atom.size + 0x5a + FF_INPUT_BUFFER_PADDING_SIZE);
700 if (!st->codec->extradata)
701 return AVERROR(ENOMEM);
702 st->codec->extradata_size = 0x5a + atom.size;
703 memcpy(st->codec->extradata, "SVQ3", 4); // fake
704 avio_read(pb, st->codec->extradata + 0x5a, atom.size);
705 av_dlog(c->fc, "Reading SMI %"PRId64" %s\n", atom.size, st->codec->extradata + 0x5a);
709 static int mov_read_enda(MOVContext *c, AVIOContext *pb, MOVAtom atom)
714 if (c->fc->nb_streams < 1)
716 st = c->fc->streams[c->fc->nb_streams-1];
718 little_endian = avio_rb16(pb);
719 av_dlog(c->fc, "enda %d\n", little_endian);
720 if (little_endian == 1) {
721 switch (st->codec->codec_id) {
722 case CODEC_ID_PCM_S24BE:
723 st->codec->codec_id = CODEC_ID_PCM_S24LE;
725 case CODEC_ID_PCM_S32BE:
726 st->codec->codec_id = CODEC_ID_PCM_S32LE;
728 case CODEC_ID_PCM_F32BE:
729 st->codec->codec_id = CODEC_ID_PCM_F32LE;
731 case CODEC_ID_PCM_F64BE:
732 st->codec->codec_id = CODEC_ID_PCM_F64LE;
741 /* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
742 static int mov_read_extradata(MOVContext *c, AVIOContext *pb, MOVAtom atom)
748 if (c->fc->nb_streams < 1) // will happen with jp2 files
750 st= c->fc->streams[c->fc->nb_streams-1];
751 size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
752 if(size > INT_MAX || (uint64_t)atom.size > INT_MAX)
754 buf= av_realloc(st->codec->extradata, size);
757 st->codec->extradata= buf;
758 buf+= st->codec->extradata_size;
759 st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE;
760 AV_WB32( buf , atom.size + 8);
761 AV_WL32( buf + 4, atom.type);
762 avio_read(pb, buf + 8, atom.size);
766 static int mov_read_wave(MOVContext *c, AVIOContext *pb, MOVAtom atom)
770 if (c->fc->nb_streams < 1)
772 st = c->fc->streams[c->fc->nb_streams-1];
774 if((uint64_t)atom.size > (1<<30))
777 if (st->codec->codec_id == CODEC_ID_QDM2 || st->codec->codec_id == CODEC_ID_QDMC) {
778 // pass all frma atom to codec, needed at least for QDMC and QDM2
779 av_free(st->codec->extradata);
780 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
781 if (!st->codec->extradata)
782 return AVERROR(ENOMEM);
783 st->codec->extradata_size = atom.size;
784 avio_read(pb, st->codec->extradata, atom.size);
785 } else if (atom.size > 8) { /* to read frma, esds atoms */
786 if (mov_read_default(c, pb, atom) < 0)
789 avio_skip(pb, atom.size);
794 * This function reads atom content and puts data in extradata without tag
795 * nor size unlike mov_read_extradata.
797 static int mov_read_glbl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
801 if (c->fc->nb_streams < 1)
803 st = c->fc->streams[c->fc->nb_streams-1];
805 if((uint64_t)atom.size > (1<<30))
808 av_free(st->codec->extradata);
809 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
810 if (!st->codec->extradata)
811 return AVERROR(ENOMEM);
812 st->codec->extradata_size = atom.size;
813 avio_read(pb, st->codec->extradata, atom.size);
818 * An strf atom is a BITMAPINFOHEADER struct. This struct is 40 bytes itself,
819 * but can have extradata appended at the end after the 40 bytes belonging
822 static int mov_read_strf(MOVContext *c, AVIOContext *pb, MOVAtom atom)
826 if (c->fc->nb_streams < 1)
830 st = c->fc->streams[c->fc->nb_streams-1];
832 if((uint64_t)atom.size > (1<<30))
835 av_free(st->codec->extradata);
836 st->codec->extradata = av_mallocz(atom.size - 40 + FF_INPUT_BUFFER_PADDING_SIZE);
837 if (!st->codec->extradata)
838 return AVERROR(ENOMEM);
839 st->codec->extradata_size = atom.size - 40;
841 avio_read(pb, st->codec->extradata, atom.size - 40);
845 static int mov_read_stco(MOVContext *c, AVIOContext *pb, MOVAtom atom)
848 MOVStreamContext *sc;
849 unsigned int i, entries;
851 if (c->fc->nb_streams < 1)
853 st = c->fc->streams[c->fc->nb_streams-1];
856 avio_r8(pb); /* version */
857 avio_rb24(pb); /* flags */
859 entries = avio_rb32(pb);
861 if(entries >= UINT_MAX/sizeof(int64_t))
864 sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
865 if (!sc->chunk_offsets)
866 return AVERROR(ENOMEM);
867 sc->chunk_count = entries;
869 if (atom.type == MKTAG('s','t','c','o'))
870 for(i=0; i<entries; i++)
871 sc->chunk_offsets[i] = avio_rb32(pb);
872 else if (atom.type == MKTAG('c','o','6','4'))
873 for(i=0; i<entries; i++)
874 sc->chunk_offsets[i] = avio_rb64(pb);
882 * Compute codec id for 'lpcm' tag.
883 * See CoreAudioTypes and AudioStreamBasicDescription at Apple.
885 enum CodecID ff_mov_get_lpcm_codec_id(int bps, int flags)
887 if (flags & 1) { // floating point
888 if (flags & 2) { // big endian
889 if (bps == 32) return CODEC_ID_PCM_F32BE;
890 else if (bps == 64) return CODEC_ID_PCM_F64BE;
892 if (bps == 32) return CODEC_ID_PCM_F32LE;
893 else if (bps == 64) return CODEC_ID_PCM_F64LE;
899 if (flags & 4) return CODEC_ID_PCM_S8;
900 else return CODEC_ID_PCM_U8;
901 else if (bps == 16) return CODEC_ID_PCM_S16BE;
902 else if (bps == 24) return CODEC_ID_PCM_S24BE;
903 else if (bps == 32) return CODEC_ID_PCM_S32BE;
906 if (flags & 4) return CODEC_ID_PCM_S8;
907 else return CODEC_ID_PCM_U8;
908 else if (bps == 16) return CODEC_ID_PCM_S16LE;
909 else if (bps == 24) return CODEC_ID_PCM_S24LE;
910 else if (bps == 32) return CODEC_ID_PCM_S32LE;
913 return CODEC_ID_NONE;
916 int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries)
919 MOVStreamContext *sc;
920 int j, pseudo_stream_id;
922 if (c->fc->nb_streams < 1)
924 st = c->fc->streams[c->fc->nb_streams-1];
927 for(pseudo_stream_id=0; pseudo_stream_id<entries; pseudo_stream_id++) {
928 //Parsing Sample description table
931 MOVAtom a = { AV_RL32("stsd") };
932 int64_t start_pos = avio_tell(pb);
933 int size = avio_rb32(pb); /* size */
934 uint32_t format = avio_rl32(pb); /* data format */
937 avio_rb32(pb); /* reserved */
938 avio_rb16(pb); /* reserved */
939 dref_id = avio_rb16(pb);
942 if (st->codec->codec_tag &&
943 st->codec->codec_tag != format &&
944 (c->fc->video_codec_id ? ff_codec_get_id(codec_movvideo_tags, format) != c->fc->video_codec_id
945 : st->codec->codec_tag != MKTAG('j','p','e','g'))
947 /* Multiple fourcc, we skip JPEG. This is not correct, we should
948 * export it as a separate AVStream but this needs a few changes
949 * in the MOV demuxer, patch welcome. */
951 av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n");
952 avio_skip(pb, size - (avio_tell(pb) - start_pos));
955 /* we cannot demux concatenated h264 streams because of different extradata */
956 if (st->codec->codec_tag && st->codec->codec_tag == AV_RL32("avc1"))
958 sc->pseudo_stream_id = st->codec->codec_tag ? -1 : pseudo_stream_id;
959 sc->dref_id= dref_id;
961 st->codec->codec_tag = format;
962 id = ff_codec_get_id(codec_movaudio_tags, format);
963 if (id<=0 && ((format&0xFFFF) == 'm'+('s'<<8) || (format&0xFFFF) == 'T'+('S'<<8)))
964 id = ff_codec_get_id(ff_codec_wav_tags, av_bswap32(format)&0xFFFF);
966 if (st->codec->codec_type != AVMEDIA_TYPE_VIDEO && id > 0) {
967 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
968 } else if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO && /* do not overwrite codec type */
969 format && format != MKTAG('m','p','4','s')) { /* skip old asf mpeg4 tag */
970 id = ff_codec_get_id(codec_movvideo_tags, format);
972 id = ff_codec_get_id(ff_codec_bmp_tags, format);
974 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
975 else if(st->codec->codec_type == AVMEDIA_TYPE_DATA){
976 id = ff_codec_get_id(ff_codec_movsubtitle_tags, format);
978 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
982 av_dlog(c->fc, "size=%d 4CC= %c%c%c%c codec_type=%d\n", size,
983 (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff,
984 (format >> 24) & 0xff, st->codec->codec_type);
986 if(st->codec->codec_type==AVMEDIA_TYPE_VIDEO) {
987 unsigned int color_depth, len;
990 st->codec->codec_id = id;
991 avio_rb16(pb); /* version */
992 avio_rb16(pb); /* revision level */
993 avio_rb32(pb); /* vendor */
994 avio_rb32(pb); /* temporal quality */
995 avio_rb32(pb); /* spatial quality */
997 st->codec->width = avio_rb16(pb); /* width */
998 st->codec->height = avio_rb16(pb); /* height */
1000 avio_rb32(pb); /* horiz resolution */
1001 avio_rb32(pb); /* vert resolution */
1002 avio_rb32(pb); /* data size, always 0 */
1003 avio_rb16(pb); /* frames per samples */
1005 len = avio_r8(pb); /* codec name, pascal string */
1008 mov_read_mac_string(c, pb, len, st->codec->codec_name, 32);
1010 avio_skip(pb, 31 - len);
1011 /* codec_tag YV12 triggers an UV swap in rawdec.c */
1012 if (!memcmp(st->codec->codec_name, "Planar Y'CbCr 8-bit 4:2:0", 25))
1013 st->codec->codec_tag=MKTAG('I', '4', '2', '0');
1015 st->codec->bits_per_coded_sample = avio_rb16(pb); /* depth */
1016 st->codec->color_table_id = avio_rb16(pb); /* colortable id */
1017 av_dlog(c->fc, "depth %d, ctab id %d\n",
1018 st->codec->bits_per_coded_sample, st->codec->color_table_id);
1019 /* figure out the palette situation */
1020 color_depth = st->codec->bits_per_coded_sample & 0x1F;
1021 color_greyscale = st->codec->bits_per_coded_sample & 0x20;
1023 /* if the depth is 2, 4, or 8 bpp, file is palettized */
1024 if ((color_depth == 2) || (color_depth == 4) ||
1025 (color_depth == 8)) {
1026 /* for palette traversal */
1027 unsigned int color_start, color_count, color_end;
1028 unsigned char r, g, b;
1030 if (color_greyscale) {
1031 int color_index, color_dec;
1032 /* compute the greyscale palette */
1033 st->codec->bits_per_coded_sample = color_depth;
1034 color_count = 1 << color_depth;
1036 color_dec = 256 / (color_count - 1);
1037 for (j = 0; j < color_count; j++) {
1038 r = g = b = color_index;
1040 (r << 16) | (g << 8) | (b);
1041 color_index -= color_dec;
1042 if (color_index < 0)
1045 } else if (st->codec->color_table_id) {
1046 const uint8_t *color_table;
1047 /* if flag bit 3 is set, use the default palette */
1048 color_count = 1 << color_depth;
1049 if (color_depth == 2)
1050 color_table = ff_qt_default_palette_4;
1051 else if (color_depth == 4)
1052 color_table = ff_qt_default_palette_16;
1054 color_table = ff_qt_default_palette_256;
1056 for (j = 0; j < color_count; j++) {
1057 r = color_table[j * 3 + 0];
1058 g = color_table[j * 3 + 1];
1059 b = color_table[j * 3 + 2];
1061 (r << 16) | (g << 8) | (b);
1064 /* load the palette from the file */
1065 color_start = avio_rb32(pb);
1066 color_count = avio_rb16(pb);
1067 color_end = avio_rb16(pb);
1068 if ((color_start <= 255) &&
1069 (color_end <= 255)) {
1070 for (j = color_start; j <= color_end; j++) {
1071 /* each R, G, or B component is 16 bits;
1072 * only use the top 8 bits; skip alpha bytes
1083 (r << 16) | (g << 8) | (b);
1087 sc->has_palette = 1;
1089 } else if(st->codec->codec_type==AVMEDIA_TYPE_AUDIO) {
1090 int bits_per_sample, flags;
1091 uint16_t version = avio_rb16(pb);
1093 st->codec->codec_id = id;
1094 avio_rb16(pb); /* revision level */
1095 avio_rb32(pb); /* vendor */
1097 st->codec->channels = avio_rb16(pb); /* channel count */
1098 av_dlog(c->fc, "audio channels %d\n", st->codec->channels);
1099 st->codec->bits_per_coded_sample = avio_rb16(pb); /* sample size */
1101 sc->audio_cid = avio_rb16(pb);
1102 avio_rb16(pb); /* packet size = 0 */
1104 st->codec->sample_rate = ((avio_rb32(pb) >> 16));
1106 //Read QT version 1 fields. In version 0 these do not exist.
1107 av_dlog(c->fc, "version =%d, isom =%d\n",version,c->isom);
1110 sc->samples_per_frame = avio_rb32(pb);
1111 avio_rb32(pb); /* bytes per packet */
1112 sc->bytes_per_frame = avio_rb32(pb);
1113 avio_rb32(pb); /* bytes per sample */
1114 } else if(version==2) {
1115 avio_rb32(pb); /* sizeof struct only */
1116 st->codec->sample_rate = av_int2dbl(avio_rb64(pb)); /* float 64 */
1117 st->codec->channels = avio_rb32(pb);
1118 avio_rb32(pb); /* always 0x7F000000 */
1119 st->codec->bits_per_coded_sample = avio_rb32(pb); /* bits per channel if sound is uncompressed */
1120 flags = avio_rb32(pb); /* lpcm format specific flag */
1121 sc->bytes_per_frame = avio_rb32(pb); /* bytes per audio packet if constant */
1122 sc->samples_per_frame = avio_rb32(pb); /* lpcm frames per audio packet if constant */
1123 if (format == MKTAG('l','p','c','m'))
1124 st->codec->codec_id = ff_mov_get_lpcm_codec_id(st->codec->bits_per_coded_sample, flags);
1128 switch (st->codec->codec_id) {
1129 case CODEC_ID_PCM_S8:
1130 case CODEC_ID_PCM_U8:
1131 if (st->codec->bits_per_coded_sample == 16)
1132 st->codec->codec_id = CODEC_ID_PCM_S16BE;
1134 case CODEC_ID_PCM_S16LE:
1135 case CODEC_ID_PCM_S16BE:
1136 if (st->codec->bits_per_coded_sample == 8)
1137 st->codec->codec_id = CODEC_ID_PCM_S8;
1138 else if (st->codec->bits_per_coded_sample == 24)
1139 st->codec->codec_id =
1140 st->codec->codec_id == CODEC_ID_PCM_S16BE ?
1141 CODEC_ID_PCM_S24BE : CODEC_ID_PCM_S24LE;
1143 /* set values for old format before stsd version 1 appeared */
1144 case CODEC_ID_MACE3:
1145 sc->samples_per_frame = 6;
1146 sc->bytes_per_frame = 2*st->codec->channels;
1148 case CODEC_ID_MACE6:
1149 sc->samples_per_frame = 6;
1150 sc->bytes_per_frame = 1*st->codec->channels;
1152 case CODEC_ID_ADPCM_IMA_QT:
1153 sc->samples_per_frame = 64;
1154 sc->bytes_per_frame = 34*st->codec->channels;
1157 sc->samples_per_frame = 160;
1158 sc->bytes_per_frame = 33;
1164 bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
1165 if (bits_per_sample) {
1166 st->codec->bits_per_coded_sample = bits_per_sample;
1167 sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
1169 } else if(st->codec->codec_type==AVMEDIA_TYPE_SUBTITLE){
1170 // ttxt stsd contains display flags, justification, background
1171 // color, fonts, and default styles, so fake an atom to read it
1172 MOVAtom fake_atom = { .size = size - (avio_tell(pb) - start_pos) };
1173 if (format != AV_RL32("mp4s")) // mp4s contains a regular esds atom
1174 mov_read_glbl(c, pb, fake_atom);
1175 st->codec->codec_id= id;
1176 st->codec->width = sc->width;
1177 st->codec->height = sc->height;
1179 /* other codec type, just skip (rtp, mp4s, tmcd ...) */
1180 avio_skip(pb, size - (avio_tell(pb) - start_pos));
1182 /* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */
1183 a.size = size - (avio_tell(pb) - start_pos);
1185 if (mov_read_default(c, pb, a) < 0)
1187 } else if (a.size > 0)
1188 avio_skip(pb, a.size);
1191 if(st->codec->codec_type==AVMEDIA_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1)
1192 st->codec->sample_rate= sc->time_scale;
1194 /* special codec parameters handling */
1195 switch (st->codec->codec_id) {
1196 #if CONFIG_DV_DEMUXER
1197 case CODEC_ID_DVAUDIO:
1198 c->dv_fctx = avformat_alloc_context();
1199 c->dv_demux = dv_init_demux(c->dv_fctx);
1201 av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
1204 sc->dv_audio_container = 1;
1205 st->codec->codec_id = CODEC_ID_PCM_S16LE;
1208 /* no ifdef since parameters are always those */
1209 case CODEC_ID_QCELP:
1210 // force sample rate for qcelp when not stored in mov
1211 if (st->codec->codec_tag != MKTAG('Q','c','l','p'))
1212 st->codec->sample_rate = 8000;
1213 st->codec->frame_size= 160;
1214 st->codec->channels= 1; /* really needed */
1216 case CODEC_ID_AMR_NB:
1217 case CODEC_ID_AMR_WB:
1218 st->codec->frame_size= sc->samples_per_frame;
1219 st->codec->channels= 1; /* really needed */
1220 /* force sample rate for amr, stsd in 3gp does not store sample rate */
1221 if (st->codec->codec_id == CODEC_ID_AMR_NB)
1222 st->codec->sample_rate = 8000;
1223 else if (st->codec->codec_id == CODEC_ID_AMR_WB)
1224 st->codec->sample_rate = 16000;
1228 st->codec->codec_type = AVMEDIA_TYPE_AUDIO; /* force type after stsd for m1a hdlr */
1229 st->need_parsing = AVSTREAM_PARSE_FULL;
1232 case CODEC_ID_ADPCM_MS:
1233 case CODEC_ID_ADPCM_IMA_WAV:
1234 st->codec->frame_size = sc->samples_per_frame;
1235 st->codec->block_align = sc->bytes_per_frame;
1238 if (st->codec->extradata_size == 36) {
1239 st->codec->frame_size = AV_RB32(st->codec->extradata+12);
1240 st->codec->channels = AV_RB8 (st->codec->extradata+21);
1241 st->codec->sample_rate = AV_RB32(st->codec->extradata+32);
1251 static int mov_read_stsd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1255 avio_r8(pb); /* version */
1256 avio_rb24(pb); /* flags */
1257 entries = avio_rb32(pb);
1259 return ff_mov_read_stsd_entries(c, pb, entries);
1262 static int mov_read_stsc(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1265 MOVStreamContext *sc;
1266 unsigned int i, entries;
1268 if (c->fc->nb_streams < 1)
1270 st = c->fc->streams[c->fc->nb_streams-1];
1273 avio_r8(pb); /* version */
1274 avio_rb24(pb); /* flags */
1276 entries = avio_rb32(pb);
1278 av_dlog(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
1280 if(entries >= UINT_MAX / sizeof(*sc->stsc_data))
1282 sc->stsc_data = av_malloc(entries * sizeof(*sc->stsc_data));
1284 return AVERROR(ENOMEM);
1285 sc->stsc_count = entries;
1287 for(i=0; i<entries; i++) {
1288 sc->stsc_data[i].first = avio_rb32(pb);
1289 sc->stsc_data[i].count = avio_rb32(pb);
1290 sc->stsc_data[i].id = avio_rb32(pb);
1295 static int mov_read_stps(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1298 MOVStreamContext *sc;
1299 unsigned i, entries;
1301 if (c->fc->nb_streams < 1)
1303 st = c->fc->streams[c->fc->nb_streams-1];
1306 avio_rb32(pb); // version + flags
1308 entries = avio_rb32(pb);
1309 if (entries >= UINT_MAX / sizeof(*sc->stps_data))
1311 sc->stps_data = av_malloc(entries * sizeof(*sc->stps_data));
1313 return AVERROR(ENOMEM);
1314 sc->stps_count = entries;
1316 for (i = 0; i < entries; i++) {
1317 sc->stps_data[i] = avio_rb32(pb);
1318 //av_dlog(c->fc, "stps %d\n", sc->stps_data[i]);
1324 static int mov_read_stss(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1327 MOVStreamContext *sc;
1328 unsigned int i, entries;
1330 if (c->fc->nb_streams < 1)
1332 st = c->fc->streams[c->fc->nb_streams-1];
1335 avio_r8(pb); /* version */
1336 avio_rb24(pb); /* flags */
1338 entries = avio_rb32(pb);
1340 av_dlog(c->fc, "keyframe_count = %d\n", entries);
1342 if(entries >= UINT_MAX / sizeof(int))
1344 sc->keyframes = av_malloc(entries * sizeof(int));
1346 return AVERROR(ENOMEM);
1347 sc->keyframe_count = entries;
1349 for(i=0; i<entries; i++) {
1350 sc->keyframes[i] = avio_rb32(pb);
1351 //av_dlog(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
1356 static int mov_read_stsz(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1359 MOVStreamContext *sc;
1360 unsigned int i, entries, sample_size, field_size, num_bytes;
1364 if (c->fc->nb_streams < 1)
1366 st = c->fc->streams[c->fc->nb_streams-1];
1369 avio_r8(pb); /* version */
1370 avio_rb24(pb); /* flags */
1372 if (atom.type == MKTAG('s','t','s','z')) {
1373 sample_size = avio_rb32(pb);
1374 if (!sc->sample_size) /* do not overwrite value computed in stsd */
1375 sc->sample_size = sample_size;
1379 avio_rb24(pb); /* reserved */
1380 field_size = avio_r8(pb);
1382 entries = avio_rb32(pb);
1384 av_dlog(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, entries);
1386 sc->sample_count = entries;
1390 if (field_size != 4 && field_size != 8 && field_size != 16 && field_size != 32) {
1391 av_log(c->fc, AV_LOG_ERROR, "Invalid sample field size %d\n", field_size);
1395 if (entries >= UINT_MAX / sizeof(int) || entries >= (UINT_MAX - 4) / field_size)
1397 sc->sample_sizes = av_malloc(entries * sizeof(int));
1398 if (!sc->sample_sizes)
1399 return AVERROR(ENOMEM);
1401 num_bytes = (entries*field_size+4)>>3;
1403 buf = av_malloc(num_bytes+FF_INPUT_BUFFER_PADDING_SIZE);
1405 av_freep(&sc->sample_sizes);
1406 return AVERROR(ENOMEM);
1409 if (avio_read(pb, buf, num_bytes) < num_bytes) {
1410 av_freep(&sc->sample_sizes);
1415 init_get_bits(&gb, buf, 8*num_bytes);
1417 for(i=0; i<entries; i++)
1418 sc->sample_sizes[i] = get_bits_long(&gb, field_size);
1424 static int mov_read_stts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1427 MOVStreamContext *sc;
1428 unsigned int i, entries;
1430 int64_t total_sample_count=0;
1432 if (c->fc->nb_streams < 1)
1434 st = c->fc->streams[c->fc->nb_streams-1];
1437 avio_r8(pb); /* version */
1438 avio_rb24(pb); /* flags */
1439 entries = avio_rb32(pb);
1441 av_dlog(c->fc, "track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries);
1443 if(entries >= UINT_MAX / sizeof(*sc->stts_data))
1445 sc->stts_data = av_malloc(entries * sizeof(*sc->stts_data));
1447 return AVERROR(ENOMEM);
1448 sc->stts_count = entries;
1450 for(i=0; i<entries; i++) {
1451 int sample_duration;
1454 sample_count=avio_rb32(pb);
1455 sample_duration = avio_rb32(pb);
1456 sc->stts_data[i].count= sample_count;
1457 sc->stts_data[i].duration= sample_duration;
1459 av_dlog(c->fc, "sample_count=%d, sample_duration=%d\n",sample_count,sample_duration);
1461 duration+=(int64_t)sample_duration*sample_count;
1462 total_sample_count+=sample_count;
1465 st->nb_frames= total_sample_count;
1467 st->duration= duration;
1471 static int mov_read_ctts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1474 MOVStreamContext *sc;
1475 unsigned int i, entries;
1477 if (c->fc->nb_streams < 1)
1479 st = c->fc->streams[c->fc->nb_streams-1];
1482 avio_r8(pb); /* version */
1483 avio_rb24(pb); /* flags */
1484 entries = avio_rb32(pb);
1486 av_dlog(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
1488 if(entries >= UINT_MAX / sizeof(*sc->ctts_data))
1490 sc->ctts_data = av_malloc(entries * sizeof(*sc->ctts_data));
1492 return AVERROR(ENOMEM);
1493 sc->ctts_count = entries;
1495 for(i=0; i<entries; i++) {
1496 int count =avio_rb32(pb);
1497 int duration =avio_rb32(pb);
1499 sc->ctts_data[i].count = count;
1500 sc->ctts_data[i].duration= duration;
1502 sc->dts_shift = FFMAX(sc->dts_shift, -duration);
1505 av_dlog(c->fc, "dts shift %d\n", sc->dts_shift);
1510 static void mov_build_index(MOVContext *mov, AVStream *st)
1512 MOVStreamContext *sc = st->priv_data;
1513 int64_t current_offset;
1514 int64_t current_dts = 0;
1515 unsigned int stts_index = 0;
1516 unsigned int stsc_index = 0;
1517 unsigned int stss_index = 0;
1518 unsigned int stps_index = 0;
1520 uint64_t stream_size = 0;
1522 /* adjust first dts according to edit list */
1523 if (sc->time_offset && mov->time_scale > 0) {
1524 int rescaled = sc->time_offset < 0 ? av_rescale(sc->time_offset, sc->time_scale, mov->time_scale) : sc->time_offset;
1525 current_dts = -rescaled;
1526 if (sc->ctts_data && sc->stts_data &&
1527 sc->ctts_data[0].duration / sc->stts_data[0].duration > 16) {
1528 /* more than 16 frames delay, dts are likely wrong
1529 this happens with files created by iMovie */
1531 st->codec->has_b_frames = 1;
1535 /* only use old uncompressed audio chunk demuxing when stts specifies it */
1536 if (!(st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
1537 sc->stts_count == 1 && sc->stts_data[0].duration == 1)) {
1538 unsigned int current_sample = 0;
1539 unsigned int stts_sample = 0;
1540 unsigned int sample_size;
1541 unsigned int distance = 0;
1542 int key_off = sc->keyframes && sc->keyframes[0] == 1;
1544 current_dts -= sc->dts_shift;
1546 if (sc->sample_count >= UINT_MAX / sizeof(*st->index_entries))
1548 st->index_entries = av_malloc(sc->sample_count*sizeof(*st->index_entries));
1549 if (!st->index_entries)
1551 st->index_entries_allocated_size = sc->sample_count*sizeof(*st->index_entries);
1553 for (i = 0; i < sc->chunk_count; i++) {
1554 current_offset = sc->chunk_offsets[i];
1555 while (stsc_index + 1 < sc->stsc_count &&
1556 i + 1 == sc->stsc_data[stsc_index + 1].first)
1558 for (j = 0; j < sc->stsc_data[stsc_index].count; j++) {
1560 if (current_sample >= sc->sample_count) {
1561 av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
1565 if (!sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index]) {
1567 if (stss_index + 1 < sc->keyframe_count)
1569 } else if (sc->stps_count && current_sample+key_off == sc->stps_data[stps_index]) {
1571 if (stps_index + 1 < sc->stps_count)
1576 sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
1577 if(sc->pseudo_stream_id == -1 ||
1578 sc->stsc_data[stsc_index].id - 1 == sc->pseudo_stream_id) {
1579 AVIndexEntry *e = &st->index_entries[st->nb_index_entries++];
1580 e->pos = current_offset;
1581 e->timestamp = current_dts;
1582 e->size = sample_size;
1583 e->min_distance = distance;
1584 e->flags = keyframe ? AVINDEX_KEYFRAME : 0;
1585 av_dlog(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
1586 "size %d, distance %d, keyframe %d\n", st->index, current_sample,
1587 current_offset, current_dts, sample_size, distance, keyframe);
1590 current_offset += sample_size;
1591 stream_size += sample_size;
1592 current_dts += sc->stts_data[stts_index].duration;
1596 if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
1602 if (st->duration > 0)
1603 st->codec->bit_rate = stream_size*8*sc->time_scale/st->duration;
1605 unsigned chunk_samples, total = 0;
1607 // compute total chunk count
1608 for (i = 0; i < sc->stsc_count; i++) {
1609 unsigned count, chunk_count;
1611 chunk_samples = sc->stsc_data[i].count;
1612 if (sc->samples_per_frame && chunk_samples % sc->samples_per_frame) {
1613 av_log(mov->fc, AV_LOG_ERROR, "error unaligned chunk\n");
1617 if (sc->samples_per_frame >= 160) { // gsm
1618 count = chunk_samples / sc->samples_per_frame;
1619 } else if (sc->samples_per_frame > 1) {
1620 unsigned samples = (1024/sc->samples_per_frame)*sc->samples_per_frame;
1621 count = (chunk_samples+samples-1) / samples;
1623 count = (chunk_samples+1023) / 1024;
1626 if (i < sc->stsc_count - 1)
1627 chunk_count = sc->stsc_data[i+1].first - sc->stsc_data[i].first;
1629 chunk_count = sc->chunk_count - (sc->stsc_data[i].first - 1);
1630 total += chunk_count * count;
1633 av_dlog(mov->fc, "chunk count %d\n", total);
1634 if (total >= UINT_MAX / sizeof(*st->index_entries))
1636 st->index_entries = av_malloc(total*sizeof(*st->index_entries));
1637 if (!st->index_entries)
1639 st->index_entries_allocated_size = total*sizeof(*st->index_entries);
1642 for (i = 0; i < sc->chunk_count; i++) {
1643 current_offset = sc->chunk_offsets[i];
1644 if (stsc_index + 1 < sc->stsc_count &&
1645 i + 1 == sc->stsc_data[stsc_index + 1].first)
1647 chunk_samples = sc->stsc_data[stsc_index].count;
1649 while (chunk_samples > 0) {
1651 unsigned size, samples;
1653 if (sc->samples_per_frame >= 160) { // gsm
1654 samples = sc->samples_per_frame;
1655 size = sc->bytes_per_frame;
1657 if (sc->samples_per_frame > 1) {
1658 samples = FFMIN((1024 / sc->samples_per_frame)*
1659 sc->samples_per_frame, chunk_samples);
1660 size = (samples / sc->samples_per_frame) * sc->bytes_per_frame;
1662 samples = FFMIN(1024, chunk_samples);
1663 size = samples * sc->sample_size;
1667 if (st->nb_index_entries >= total) {
1668 av_log(mov->fc, AV_LOG_ERROR, "wrong chunk count %d\n", total);
1671 e = &st->index_entries[st->nb_index_entries++];
1672 e->pos = current_offset;
1673 e->timestamp = current_dts;
1675 e->min_distance = 0;
1676 e->flags = AVINDEX_KEYFRAME;
1677 av_dlog(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", "
1678 "size %d, duration %d\n", st->index, i, current_offset, current_dts,
1681 current_offset += size;
1682 current_dts += samples;
1683 chunk_samples -= samples;
1689 static int mov_open_dref(AVIOContext **pb, char *src, MOVDref *ref)
1691 /* try relative path, we do not try the absolute because it can leak information about our
1692 system to an attacker */
1693 if (ref->nlvl_to > 0 && ref->nlvl_from > 0) {
1694 char filename[1024];
1698 /* find a source dir */
1699 src_path = strrchr(src, '/');
1705 /* find a next level down to target */
1706 for (i = 0, l = strlen(ref->path) - 1; l >= 0; l--)
1707 if (ref->path[l] == '/') {
1708 if (i == ref->nlvl_to - 1)
1714 /* compose filename if next level down to target was found */
1715 if (i == ref->nlvl_to - 1 && src_path - src < sizeof(filename)) {
1716 memcpy(filename, src, src_path - src);
1717 filename[src_path - src] = 0;
1719 for (i = 1; i < ref->nlvl_from; i++)
1720 av_strlcat(filename, "../", 1024);
1722 av_strlcat(filename, ref->path + l + 1, 1024);
1724 if (!avio_open(pb, filename, AVIO_RDONLY))
1729 return AVERROR(ENOENT);
1732 static int mov_read_trak(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1735 MOVStreamContext *sc;
1738 st = av_new_stream(c->fc, c->fc->nb_streams);
1739 if (!st) return AVERROR(ENOMEM);
1740 sc = av_mallocz(sizeof(MOVStreamContext));
1741 if (!sc) return AVERROR(ENOMEM);
1744 st->codec->codec_type = AVMEDIA_TYPE_DATA;
1745 sc->ffindex = st->index;
1747 if ((ret = mov_read_default(c, pb, atom)) < 0)
1751 if (sc->chunk_count && (!sc->stts_count || !sc->stsc_count ||
1752 (!sc->sample_size && !sc->sample_count))) {
1753 av_log(c->fc, AV_LOG_ERROR, "stream %d, missing mandatory atoms, broken header\n",
1758 if (sc->time_scale <= 0) {
1759 av_log(c->fc, AV_LOG_WARNING, "stream %d, timescale not set\n", st->index);
1760 sc->time_scale = c->time_scale;
1761 if (sc->time_scale <= 0)
1765 av_set_pts_info(st, 64, 1, sc->time_scale);
1767 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
1768 !st->codec->frame_size && sc->stts_count == 1) {
1769 st->codec->frame_size = av_rescale(sc->stts_data[0].duration,
1770 st->codec->sample_rate, sc->time_scale);
1771 av_dlog(c->fc, "frame size %d\n", st->codec->frame_size);
1774 mov_build_index(c, st);
1776 if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) {
1777 MOVDref *dref = &sc->drefs[sc->dref_id - 1];
1778 if (mov_open_dref(&sc->pb, c->fc->filename, dref) < 0)
1779 av_log(c->fc, AV_LOG_ERROR,
1780 "stream %d, error opening alias: path='%s', dir='%s', "
1781 "filename='%s', volume='%s', nlvl_from=%d, nlvl_to=%d\n",
1782 st->index, dref->path, dref->dir, dref->filename,
1783 dref->volume, dref->nlvl_from, dref->nlvl_to);
1787 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1788 if (!st->sample_aspect_ratio.num &&
1789 (st->codec->width != sc->width || st->codec->height != sc->height)) {
1790 st->sample_aspect_ratio = av_d2q(((double)st->codec->height * sc->width) /
1791 ((double)st->codec->width * sc->height), INT_MAX);
1794 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
1795 sc->time_scale*st->nb_frames, st->duration, INT_MAX);
1797 if (sc->stts_count == 1 || (sc->stts_count == 2 && sc->stts_data[1].count == 1))
1798 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den,
1799 sc->time_scale, sc->stts_data[0].duration, INT_MAX);
1802 switch (st->codec->codec_id) {
1803 #if CONFIG_H261_DECODER
1806 #if CONFIG_H263_DECODER
1809 #if CONFIG_H264_DECODER
1812 #if CONFIG_MPEG4_DECODER
1813 case CODEC_ID_MPEG4:
1815 st->codec->width = 0; /* let decoder init width/height */
1816 st->codec->height= 0;
1820 /* Do not need those anymore. */
1821 av_freep(&sc->chunk_offsets);
1822 av_freep(&sc->stsc_data);
1823 av_freep(&sc->sample_sizes);
1824 av_freep(&sc->keyframes);
1825 av_freep(&sc->stts_data);
1826 av_freep(&sc->stps_data);
1831 static int mov_read_ilst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1834 c->itunes_metadata = 1;
1835 ret = mov_read_default(c, pb, atom);
1836 c->itunes_metadata = 0;
1840 static int mov_read_meta(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1842 while (atom.size > 8) {
1843 uint32_t tag = avio_rl32(pb);
1845 if (tag == MKTAG('h','d','l','r')) {
1846 avio_seek(pb, -8, SEEK_CUR);
1848 return mov_read_default(c, pb, atom);
1854 static int mov_read_tkhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1859 int64_t disp_transform[2];
1860 int display_matrix[3][2];
1862 MOVStreamContext *sc;
1865 if (c->fc->nb_streams < 1)
1867 st = c->fc->streams[c->fc->nb_streams-1];
1870 version = avio_r8(pb);
1871 avio_rb24(pb); /* flags */
1873 MOV_TRACK_ENABLED 0x0001
1874 MOV_TRACK_IN_MOVIE 0x0002
1875 MOV_TRACK_IN_PREVIEW 0x0004
1876 MOV_TRACK_IN_POSTER 0x0008
1883 avio_rb32(pb); /* creation time */
1884 avio_rb32(pb); /* modification time */
1886 st->id = (int)avio_rb32(pb); /* track id (NOT 0 !)*/
1887 avio_rb32(pb); /* reserved */
1889 /* highlevel (considering edits) duration in movie timebase */
1890 (version == 1) ? avio_rb64(pb) : avio_rb32(pb);
1891 avio_rb32(pb); /* reserved */
1892 avio_rb32(pb); /* reserved */
1894 avio_rb16(pb); /* layer */
1895 avio_rb16(pb); /* alternate group */
1896 avio_rb16(pb); /* volume */
1897 avio_rb16(pb); /* reserved */
1899 //read in the display matrix (outlined in ISO 14496-12, Section 6.2.2)
1900 // they're kept in fixed point format through all calculations
1901 // ignore u,v,z b/c we don't need the scale factor to calc aspect ratio
1902 for (i = 0; i < 3; i++) {
1903 display_matrix[i][0] = avio_rb32(pb); // 16.16 fixed point
1904 display_matrix[i][1] = avio_rb32(pb); // 16.16 fixed point
1905 avio_rb32(pb); // 2.30 fixed point (not used)
1908 width = avio_rb32(pb); // 16.16 fixed point track width
1909 height = avio_rb32(pb); // 16.16 fixed point track height
1910 sc->width = width >> 16;
1911 sc->height = height >> 16;
1913 // transform the display width/height according to the matrix
1914 // skip this if the display matrix is the default identity matrix
1915 // or if it is rotating the picture, ex iPhone 3GS
1916 // to keep the same scale, use [width height 1<<16]
1917 if (width && height &&
1918 ((display_matrix[0][0] != 65536 ||
1919 display_matrix[1][1] != 65536) &&
1920 !display_matrix[0][1] &&
1921 !display_matrix[1][0] &&
1922 !display_matrix[2][0] && !display_matrix[2][1])) {
1923 for (i = 0; i < 2; i++)
1925 (int64_t) width * display_matrix[0][i] +
1926 (int64_t) height * display_matrix[1][i] +
1927 ((int64_t) display_matrix[2][i] << 16);
1929 //sample aspect ratio is new width/height divided by old width/height
1930 st->sample_aspect_ratio = av_d2q(
1931 ((double) disp_transform[0] * height) /
1932 ((double) disp_transform[1] * width), INT_MAX);
1937 static int mov_read_tfhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1939 MOVFragment *frag = &c->fragment;
1940 MOVTrackExt *trex = NULL;
1941 int flags, track_id, i;
1943 avio_r8(pb); /* version */
1944 flags = avio_rb24(pb);
1946 track_id = avio_rb32(pb);
1949 frag->track_id = track_id;
1950 for (i = 0; i < c->trex_count; i++)
1951 if (c->trex_data[i].track_id == frag->track_id) {
1952 trex = &c->trex_data[i];
1956 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding trex\n");
1960 if (flags & 0x01) frag->base_data_offset = avio_rb64(pb);
1961 else frag->base_data_offset = frag->moof_offset;
1962 if (flags & 0x02) frag->stsd_id = avio_rb32(pb);
1963 else frag->stsd_id = trex->stsd_id;
1965 frag->duration = flags & 0x08 ? avio_rb32(pb) : trex->duration;
1966 frag->size = flags & 0x10 ? avio_rb32(pb) : trex->size;
1967 frag->flags = flags & 0x20 ? avio_rb32(pb) : trex->flags;
1968 av_dlog(c->fc, "frag flags 0x%x\n", frag->flags);
1972 static int mov_read_chap(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1974 c->chapter_track = avio_rb32(pb);
1978 static int mov_read_trex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1982 if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data))
1984 trex = av_realloc(c->trex_data, (c->trex_count+1)*sizeof(*c->trex_data));
1986 return AVERROR(ENOMEM);
1987 c->trex_data = trex;
1988 trex = &c->trex_data[c->trex_count++];
1989 avio_r8(pb); /* version */
1990 avio_rb24(pb); /* flags */
1991 trex->track_id = avio_rb32(pb);
1992 trex->stsd_id = avio_rb32(pb);
1993 trex->duration = avio_rb32(pb);
1994 trex->size = avio_rb32(pb);
1995 trex->flags = avio_rb32(pb);
1999 static int mov_read_trun(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2001 MOVFragment *frag = &c->fragment;
2002 AVStream *st = NULL;
2003 MOVStreamContext *sc;
2006 int data_offset = 0;
2007 unsigned entries, first_sample_flags = frag->flags;
2008 int flags, distance, i;
2010 for (i = 0; i < c->fc->nb_streams; i++) {
2011 if (c->fc->streams[i]->id == frag->track_id) {
2012 st = c->fc->streams[i];
2017 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id);
2021 if (sc->pseudo_stream_id+1 != frag->stsd_id)
2023 avio_r8(pb); /* version */
2024 flags = avio_rb24(pb);
2025 entries = avio_rb32(pb);
2026 av_dlog(c->fc, "flags 0x%x entries %d\n", flags, entries);
2027 if (flags & 0x001) data_offset = avio_rb32(pb);
2028 if (flags & 0x004) first_sample_flags = avio_rb32(pb);
2029 if (flags & 0x800) {
2031 if ((uint64_t)entries+sc->ctts_count >= UINT_MAX/sizeof(*sc->ctts_data))
2033 ctts_data = av_realloc(sc->ctts_data,
2034 (entries+sc->ctts_count)*sizeof(*sc->ctts_data));
2036 return AVERROR(ENOMEM);
2037 sc->ctts_data = ctts_data;
2040 offset = frag->base_data_offset + data_offset;
2042 av_dlog(c->fc, "first sample flags 0x%x\n", first_sample_flags);
2043 for (i = 0; i < entries; i++) {
2044 unsigned sample_size = frag->size;
2045 int sample_flags = i ? frag->flags : first_sample_flags;
2046 unsigned sample_duration = frag->duration;
2049 if (flags & 0x100) sample_duration = avio_rb32(pb);
2050 if (flags & 0x200) sample_size = avio_rb32(pb);
2051 if (flags & 0x400) sample_flags = avio_rb32(pb);
2052 if (flags & 0x800) {
2053 sc->ctts_data[sc->ctts_count].count = 1;
2054 sc->ctts_data[sc->ctts_count].duration = avio_rb32(pb);
2057 if ((keyframe = st->codec->codec_type == AVMEDIA_TYPE_AUDIO ||
2058 (flags & 0x004 && !i && !sample_flags) || sample_flags & 0x2000000))
2060 av_add_index_entry(st, offset, dts, sample_size, distance,
2061 keyframe ? AVINDEX_KEYFRAME : 0);
2062 av_dlog(c->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
2063 "size %d, distance %d, keyframe %d\n", st->index, sc->sample_count+i,
2064 offset, dts, sample_size, distance, keyframe);
2066 dts += sample_duration;
2067 offset += sample_size;
2069 frag->moof_offset = offset;
2074 /* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
2075 /* like the files created with Adobe Premiere 5.0, for samples see */
2076 /* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
2077 static int mov_read_wide(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2082 return 0; /* continue */
2083 if (avio_rb32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
2084 avio_skip(pb, atom.size - 4);
2087 atom.type = avio_rl32(pb);
2089 if (atom.type != MKTAG('m','d','a','t')) {
2090 avio_skip(pb, atom.size);
2093 err = mov_read_mdat(c, pb, atom);
2097 static int mov_read_cmov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2102 uint8_t *moov_data; /* uncompressed data */
2103 long cmov_len, moov_len;
2106 avio_rb32(pb); /* dcom atom */
2107 if (avio_rl32(pb) != MKTAG('d','c','o','m'))
2109 if (avio_rl32(pb) != MKTAG('z','l','i','b')) {
2110 av_log(c->fc, AV_LOG_ERROR, "unknown compression for cmov atom !");
2113 avio_rb32(pb); /* cmvd atom */
2114 if (avio_rl32(pb) != MKTAG('c','m','v','d'))
2116 moov_len = avio_rb32(pb); /* uncompressed size */
2117 cmov_len = atom.size - 6 * 4;
2119 cmov_data = av_malloc(cmov_len);
2121 return AVERROR(ENOMEM);
2122 moov_data = av_malloc(moov_len);
2125 return AVERROR(ENOMEM);
2127 avio_read(pb, cmov_data, cmov_len);
2128 if(uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
2129 goto free_and_return;
2130 if(ffio_init_context(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
2131 goto free_and_return;
2132 atom.type = MKTAG('m','o','o','v');
2133 atom.size = moov_len;
2135 // { int fd = open("/tmp/uncompheader.mov", O_WRONLY | O_CREAT); write(fd, moov_data, moov_len); close(fd); }
2137 ret = mov_read_default(c, &ctx, atom);
2143 av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
2148 /* edit list atom */
2149 static int mov_read_elst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2151 MOVStreamContext *sc;
2154 if (c->fc->nb_streams < 1)
2156 sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
2158 avio_r8(pb); /* version */
2159 avio_rb24(pb); /* flags */
2160 edit_count = avio_rb32(pb); /* entries */
2162 if((uint64_t)edit_count*12+8 > atom.size)
2165 for(i=0; i<edit_count; i++){
2167 int duration = avio_rb32(pb); /* Track duration */
2168 time = avio_rb32(pb); /* Media time */
2169 avio_rb32(pb); /* Media rate */
2170 if (i == 0 && time >= -1) {
2171 sc->time_offset = time != -1 ? time : -duration;
2176 av_log(c->fc, AV_LOG_WARNING, "multiple edit list entries, "
2177 "a/v desync might occur, patch welcome\n");
2179 av_dlog(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, edit_count);
2183 static const MOVParseTableEntry mov_default_parse_table[] = {
2184 { MKTAG('a','v','s','s'), mov_read_extradata },
2185 { MKTAG('c','h','p','l'), mov_read_chpl },
2186 { MKTAG('c','o','6','4'), mov_read_stco },
2187 { MKTAG('c','t','t','s'), mov_read_ctts }, /* composition time to sample */
2188 { MKTAG('d','i','n','f'), mov_read_default },
2189 { MKTAG('d','r','e','f'), mov_read_dref },
2190 { MKTAG('e','d','t','s'), mov_read_default },
2191 { MKTAG('e','l','s','t'), mov_read_elst },
2192 { MKTAG('e','n','d','a'), mov_read_enda },
2193 { MKTAG('f','i','e','l'), mov_read_extradata },
2194 { MKTAG('f','t','y','p'), mov_read_ftyp },
2195 { MKTAG('g','l','b','l'), mov_read_glbl },
2196 { MKTAG('h','d','l','r'), mov_read_hdlr },
2197 { MKTAG('i','l','s','t'), mov_read_ilst },
2198 { MKTAG('j','p','2','h'), mov_read_extradata },
2199 { MKTAG('m','d','a','t'), mov_read_mdat },
2200 { MKTAG('m','d','h','d'), mov_read_mdhd },
2201 { MKTAG('m','d','i','a'), mov_read_default },
2202 { MKTAG('m','e','t','a'), mov_read_meta },
2203 { MKTAG('m','i','n','f'), mov_read_default },
2204 { MKTAG('m','o','o','f'), mov_read_moof },
2205 { MKTAG('m','o','o','v'), mov_read_moov },
2206 { MKTAG('m','v','e','x'), mov_read_default },
2207 { MKTAG('m','v','h','d'), mov_read_mvhd },
2208 { MKTAG('S','M','I',' '), mov_read_smi }, /* Sorenson extension ??? */
2209 { MKTAG('a','l','a','c'), mov_read_extradata }, /* alac specific atom */
2210 { MKTAG('a','v','c','C'), mov_read_glbl },
2211 { MKTAG('p','a','s','p'), mov_read_pasp },
2212 { MKTAG('s','t','b','l'), mov_read_default },
2213 { MKTAG('s','t','c','o'), mov_read_stco },
2214 { MKTAG('s','t','p','s'), mov_read_stps },
2215 { MKTAG('s','t','r','f'), mov_read_strf },
2216 { MKTAG('s','t','s','c'), mov_read_stsc },
2217 { MKTAG('s','t','s','d'), mov_read_stsd }, /* sample description */
2218 { MKTAG('s','t','s','s'), mov_read_stss }, /* sync sample */
2219 { MKTAG('s','t','s','z'), mov_read_stsz }, /* sample size */
2220 { MKTAG('s','t','t','s'), mov_read_stts },
2221 { MKTAG('s','t','z','2'), mov_read_stsz }, /* compact sample size */
2222 { MKTAG('t','k','h','d'), mov_read_tkhd }, /* track header */
2223 { MKTAG('t','f','h','d'), mov_read_tfhd }, /* track fragment header */
2224 { MKTAG('t','r','a','k'), mov_read_trak },
2225 { MKTAG('t','r','a','f'), mov_read_default },
2226 { MKTAG('t','r','e','f'), mov_read_default },
2227 { MKTAG('c','h','a','p'), mov_read_chap },
2228 { MKTAG('t','r','e','x'), mov_read_trex },
2229 { MKTAG('t','r','u','n'), mov_read_trun },
2230 { MKTAG('u','d','t','a'), mov_read_default },
2231 { MKTAG('w','a','v','e'), mov_read_wave },
2232 { MKTAG('e','s','d','s'), mov_read_esds },
2233 { MKTAG('d','a','c','3'), mov_read_dac3 }, /* AC-3 info */
2234 { MKTAG('w','i','d','e'), mov_read_wide }, /* place holder */
2235 { MKTAG('c','m','o','v'), mov_read_cmov },
2239 static int mov_probe(AVProbeData *p)
2241 unsigned int offset;
2245 /* check file header */
2248 /* ignore invalid offset */
2249 if ((offset + 8) > (unsigned int)p->buf_size)
2251 tag = AV_RL32(p->buf + offset + 4);
2253 /* check for obvious tags */
2254 case MKTAG('j','P',' ',' '): /* jpeg 2000 signature */
2255 case MKTAG('m','o','o','v'):
2256 case MKTAG('m','d','a','t'):
2257 case MKTAG('p','n','o','t'): /* detect movs with preview pics like ew.mov and april.mov */
2258 case MKTAG('u','d','t','a'): /* Packet Video PVAuthor adds this and a lot of more junk */
2259 case MKTAG('f','t','y','p'):
2260 return AVPROBE_SCORE_MAX;
2261 /* those are more common words, so rate then a bit less */
2262 case MKTAG('e','d','i','w'): /* xdcam files have reverted first tags */
2263 case MKTAG('w','i','d','e'):
2264 case MKTAG('f','r','e','e'):
2265 case MKTAG('j','u','n','k'):
2266 case MKTAG('p','i','c','t'):
2267 return AVPROBE_SCORE_MAX - 5;
2268 case MKTAG(0x82,0x82,0x7f,0x7d):
2269 case MKTAG('s','k','i','p'):
2270 case MKTAG('u','u','i','d'):
2271 case MKTAG('p','r','f','l'):
2272 offset = AV_RB32(p->buf+offset) + offset;
2273 /* if we only find those cause probedata is too small at least rate them */
2274 score = AVPROBE_SCORE_MAX - 50;
2277 /* unrecognized tag */
2284 // must be done after parsing all trak because there's no order requirement
2285 static void mov_read_chapters(AVFormatContext *s)
2287 MOVContext *mov = s->priv_data;
2288 AVStream *st = NULL;
2289 MOVStreamContext *sc;
2293 for (i = 0; i < s->nb_streams; i++)
2294 if (s->streams[i]->id == mov->chapter_track) {
2299 av_log(s, AV_LOG_ERROR, "Referenced QT chapter track not found\n");
2303 st->discard = AVDISCARD_ALL;
2305 cur_pos = avio_tell(sc->pb);
2307 for (i = 0; i < st->nb_index_entries; i++) {
2308 AVIndexEntry *sample = &st->index_entries[i];
2309 int64_t end = i+1 < st->nb_index_entries ? st->index_entries[i+1].timestamp : st->duration;
2314 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
2315 av_log(s, AV_LOG_ERROR, "Chapter %d not found in file\n", i);
2319 // the first two bytes are the length of the title
2320 len = avio_rb16(sc->pb);
2321 if (len > sample->size-2)
2323 title_len = 2*len + 1;
2324 if (!(title = av_mallocz(title_len)))
2327 // The samples could theoretically be in any encoding if there's an encd
2328 // atom following, but in practice are only utf-8 or utf-16, distinguished
2329 // instead by the presence of a BOM
2330 ch = avio_rb16(sc->pb);
2332 avio_get_str16be(sc->pb, len, title, title_len);
2333 else if (ch == 0xfffe)
2334 avio_get_str16le(sc->pb, len, title, title_len);
2337 avio_get_str(sc->pb, len - 2, title + 2, title_len - 2);
2340 ff_new_chapter(s, i, st->time_base, sample->timestamp, end, title);
2344 avio_seek(sc->pb, cur_pos, SEEK_SET);
2347 static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
2349 MOVContext *mov = s->priv_data;
2350 AVIOContext *pb = s->pb;
2352 MOVAtom atom = { AV_RL32("root") };
2355 /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
2357 atom.size = avio_size(pb);
2359 atom.size = INT64_MAX;
2361 /* check MOV header */
2362 if ((err = mov_read_default(mov, pb, atom)) < 0) {
2363 av_log(s, AV_LOG_ERROR, "error reading header: %d\n", err);
2366 if (!mov->found_moov) {
2367 av_log(s, AV_LOG_ERROR, "moov atom not found\n");
2370 av_dlog(mov->fc, "on_parse_exit_offset=%lld\n", avio_tell(pb));
2372 if (pb->seekable && mov->chapter_track > 0)
2373 mov_read_chapters(s);
2378 static AVIndexEntry *mov_find_next_sample(AVFormatContext *s, AVStream **st)
2380 AVIndexEntry *sample = NULL;
2381 int64_t best_dts = INT64_MAX;
2383 for (i = 0; i < s->nb_streams; i++) {
2384 AVStream *avst = s->streams[i];
2385 MOVStreamContext *msc = avst->priv_data;
2386 if (msc->pb && msc->current_sample < avst->nb_index_entries) {
2387 AVIndexEntry *current_sample = &avst->index_entries[msc->current_sample];
2388 int64_t dts = av_rescale(current_sample->timestamp, AV_TIME_BASE, msc->time_scale);
2389 av_dlog(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
2390 if (!sample || (!s->pb->seekable && current_sample->pos < sample->pos) ||
2392 ((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb &&
2393 ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
2394 (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) {
2395 sample = current_sample;
2404 static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
2406 MOVContext *mov = s->priv_data;
2407 MOVStreamContext *sc;
2408 AVIndexEntry *sample;
2409 AVStream *st = NULL;
2412 sample = mov_find_next_sample(s, &st);
2414 mov->found_mdat = 0;
2415 if (s->pb->seekable||
2416 mov_read_default(mov, s->pb, (MOVAtom){ AV_RL32("root"), INT64_MAX }) < 0 ||
2419 av_dlog(s, "read fragments, offset 0x%llx\n", avio_tell(s->pb));
2423 /* must be done just before reading, to avoid infinite loop on sample */
2424 sc->current_sample++;
2426 if (st->discard != AVDISCARD_ALL) {
2427 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
2428 av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
2429 sc->ffindex, sample->pos);
2432 ret = av_get_packet(sc->pb, pkt, sample->size);
2435 if (sc->has_palette) {
2438 pal = av_packet_new_side_data(pkt, AV_PKT_DATA_PALETTE, AVPALETTE_SIZE);
2440 av_log(mov->fc, AV_LOG_ERROR, "Cannot append palette to packet\n");
2442 memcpy(pal, sc->palette, AVPALETTE_SIZE);
2443 sc->has_palette = 0;
2446 #if CONFIG_DV_DEMUXER
2447 if (mov->dv_demux && sc->dv_audio_container) {
2448 dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size);
2451 ret = dv_get_packet(mov->dv_demux, pkt);
2458 pkt->stream_index = sc->ffindex;
2459 pkt->dts = sample->timestamp;
2460 if (sc->ctts_data) {
2461 pkt->pts = pkt->dts + sc->dts_shift + sc->ctts_data[sc->ctts_index].duration;
2462 /* update ctts context */
2464 if (sc->ctts_index < sc->ctts_count &&
2465 sc->ctts_data[sc->ctts_index].count == sc->ctts_sample) {
2467 sc->ctts_sample = 0;
2470 pkt->dts = AV_NOPTS_VALUE;
2472 int64_t next_dts = (sc->current_sample < st->nb_index_entries) ?
2473 st->index_entries[sc->current_sample].timestamp : st->duration;
2474 pkt->duration = next_dts - pkt->dts;
2475 pkt->pts = pkt->dts;
2477 if (st->discard == AVDISCARD_ALL)
2479 pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? AV_PKT_FLAG_KEY : 0;
2480 pkt->pos = sample->pos;
2481 av_dlog(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n",
2482 pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
2486 static int mov_seek_stream(AVFormatContext *s, AVStream *st, int64_t timestamp, int flags)
2488 MOVStreamContext *sc = st->priv_data;
2489 int sample, time_sample;
2492 sample = av_index_search_timestamp(st, timestamp, flags);
2493 av_dlog(s, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
2494 if (sample < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
2496 if (sample < 0) /* not sure what to do */
2498 sc->current_sample = sample;
2499 av_dlog(s, "stream %d, found sample %d\n", st->index, sc->current_sample);
2500 /* adjust ctts index */
2501 if (sc->ctts_data) {
2503 for (i = 0; i < sc->ctts_count; i++) {
2504 int next = time_sample + sc->ctts_data[i].count;
2505 if (next > sc->current_sample) {
2507 sc->ctts_sample = sc->current_sample - time_sample;
2516 static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
2519 int64_t seek_timestamp, timestamp;
2523 if (stream_index >= s->nb_streams)
2525 if (sample_time < 0)
2528 st = s->streams[stream_index];
2529 sample = mov_seek_stream(s, st, sample_time, flags);
2533 /* adjust seek timestamp to found sample timestamp */
2534 seek_timestamp = st->index_entries[sample].timestamp;
2536 for (i = 0; i < s->nb_streams; i++) {
2538 if (stream_index == i)
2541 timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
2542 mov_seek_stream(s, st, timestamp, flags);
2547 static int mov_read_close(AVFormatContext *s)
2549 MOVContext *mov = s->priv_data;
2552 for (i = 0; i < s->nb_streams; i++) {
2553 AVStream *st = s->streams[i];
2554 MOVStreamContext *sc = st->priv_data;
2556 av_freep(&sc->ctts_data);
2557 for (j = 0; j < sc->drefs_count; j++) {
2558 av_freep(&sc->drefs[j].path);
2559 av_freep(&sc->drefs[j].dir);
2561 av_freep(&sc->drefs);
2562 if (sc->pb && sc->pb != s->pb)
2565 av_freep(&st->codec->palctrl);
2568 if (mov->dv_demux) {
2569 for(i = 0; i < mov->dv_fctx->nb_streams; i++) {
2570 av_freep(&mov->dv_fctx->streams[i]->codec);
2571 av_freep(&mov->dv_fctx->streams[i]);
2573 av_freep(&mov->dv_fctx);
2574 av_freep(&mov->dv_demux);
2577 av_freep(&mov->trex_data);
2582 AVInputFormat ff_mov_demuxer = {
2583 "mov,mp4,m4a,3gp,3g2,mj2",
2584 NULL_IF_CONFIG_SMALL("QuickTime/MPEG-4/Motion JPEG 2000 format"),