3 * Copyright (c) 2001 Fabrice Bellard
4 * Copyright (c) 2009 Baptiste Coudurier <baptiste dot coudurier at gmail dot com>
6 * This file is part of Libav.
8 * Libav is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * Libav is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with Libav; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
26 //#define MOV_EXPORT_ALL_METADATA
28 #include "libavutil/intreadwrite.h"
29 #include "libavutil/intfloat_readwrite.h"
30 #include "libavutil/mathematics.h"
31 #include "libavutil/avstring.h"
32 #include "libavutil/dict.h"
34 #include "avio_internal.h"
37 #include "libavcodec/get_bits.h"
44 * First version by Francois Revol revol@free.fr
45 * Seek function by Gael Chardon gael.dev@4now.net
47 * Features and limitations:
48 * - reads most of the QT files I have (at least the structure),
49 * Sample QuickTime files with mp3 audio can be found at: http://www.3ivx.com/showcase.html
50 * - the code is quite ugly... maybe I won't do it recursive next time :-)
52 * Funny I didn't know about http://sourceforge.net/projects/qt-ffmpeg/
53 * when coding this :) (it's a writer anyway)
55 * Reference documents:
56 * http://www.geocities.com/xhelmboyx/quicktime/formats/qtm-layout.txt
58 * http://developer.apple.com/documentation/QuickTime/QTFF/
59 * http://developer.apple.com/documentation/QuickTime/QTFF/qtff.pdf
60 * QuickTime is a trademark of Apple (AFAIK :))
63 #include "qtpalette.h"
69 /* XXX: it's the first time I make a recursive parser I think... sorry if it's ugly :P */
71 /* those functions parse an atom */
73 0: continue to parse next atom
74 <0: error occurred, exit
76 /* links atom IDs to parse functions */
77 typedef struct MOVParseTableEntry {
79 int (*parse)(MOVContext *ctx, AVIOContext *pb, MOVAtom atom);
82 static const MOVParseTableEntry mov_default_parse_table[];
84 static int mov_metadata_trkn(MOVContext *c, AVIOContext *pb, unsigned len)
88 avio_rb16(pb); // unknown
89 snprintf(buf, sizeof(buf), "%d", avio_rb16(pb));
90 av_dict_set(&c->fc->metadata, "track", buf, 0);
92 avio_rb16(pb); // total tracks
97 static const uint32_t mac_to_unicode[128] = {
98 0x00C4,0x00C5,0x00C7,0x00C9,0x00D1,0x00D6,0x00DC,0x00E1,
99 0x00E0,0x00E2,0x00E4,0x00E3,0x00E5,0x00E7,0x00E9,0x00E8,
100 0x00EA,0x00EB,0x00ED,0x00EC,0x00EE,0x00EF,0x00F1,0x00F3,
101 0x00F2,0x00F4,0x00F6,0x00F5,0x00FA,0x00F9,0x00FB,0x00FC,
102 0x2020,0x00B0,0x00A2,0x00A3,0x00A7,0x2022,0x00B6,0x00DF,
103 0x00AE,0x00A9,0x2122,0x00B4,0x00A8,0x2260,0x00C6,0x00D8,
104 0x221E,0x00B1,0x2264,0x2265,0x00A5,0x00B5,0x2202,0x2211,
105 0x220F,0x03C0,0x222B,0x00AA,0x00BA,0x03A9,0x00E6,0x00F8,
106 0x00BF,0x00A1,0x00AC,0x221A,0x0192,0x2248,0x2206,0x00AB,
107 0x00BB,0x2026,0x00A0,0x00C0,0x00C3,0x00D5,0x0152,0x0153,
108 0x2013,0x2014,0x201C,0x201D,0x2018,0x2019,0x00F7,0x25CA,
109 0x00FF,0x0178,0x2044,0x20AC,0x2039,0x203A,0xFB01,0xFB02,
110 0x2021,0x00B7,0x201A,0x201E,0x2030,0x00C2,0x00CA,0x00C1,
111 0x00CB,0x00C8,0x00CD,0x00CE,0x00CF,0x00CC,0x00D3,0x00D4,
112 0xF8FF,0x00D2,0x00DA,0x00DB,0x00D9,0x0131,0x02C6,0x02DC,
113 0x00AF,0x02D8,0x02D9,0x02DA,0x00B8,0x02DD,0x02DB,0x02C7,
116 static int mov_read_mac_string(MOVContext *c, AVIOContext *pb, int len,
117 char *dst, int dstlen)
120 char *end = dst+dstlen-1;
123 for (i = 0; i < len; i++) {
124 uint8_t t, c = avio_r8(pb);
125 if (c < 0x80 && p < end)
128 PUT_UTF8(mac_to_unicode[c-0x80], t, if (p < end) *p++ = t;);
134 static int mov_read_udta_string(MOVContext *c, AVIOContext *pb, MOVAtom atom)
136 #ifdef MOV_EXPORT_ALL_METADATA
139 char str[1024], key2[16], language[4] = {0};
140 const char *key = NULL;
141 uint16_t str_size, langcode = 0;
142 uint32_t data_type = 0;
143 int (*parse)(MOVContext*, AVIOContext*, unsigned) = NULL;
146 case MKTAG(0xa9,'n','a','m'): key = "title"; break;
147 case MKTAG(0xa9,'a','u','t'):
148 case MKTAG(0xa9,'A','R','T'): key = "artist"; break;
149 case MKTAG(0xa9,'w','r','t'): key = "composer"; break;
150 case MKTAG( 'c','p','r','t'):
151 case MKTAG(0xa9,'c','p','y'): key = "copyright"; break;
152 case MKTAG(0xa9,'c','m','t'):
153 case MKTAG(0xa9,'i','n','f'): key = "comment"; break;
154 case MKTAG(0xa9,'a','l','b'): key = "album"; break;
155 case MKTAG(0xa9,'d','a','y'): key = "date"; break;
156 case MKTAG(0xa9,'g','e','n'): key = "genre"; break;
157 case MKTAG(0xa9,'t','o','o'):
158 case MKTAG(0xa9,'s','w','r'): key = "encoder"; break;
159 case MKTAG(0xa9,'e','n','c'): key = "encoder"; break;
160 case MKTAG( 'd','e','s','c'): key = "description";break;
161 case MKTAG( 'l','d','e','s'): key = "synopsis"; break;
162 case MKTAG( 't','v','s','h'): key = "show"; break;
163 case MKTAG( 't','v','e','n'): key = "episode_id";break;
164 case MKTAG( 't','v','n','n'): key = "network"; break;
165 case MKTAG( 't','r','k','n'): key = "track";
166 parse = mov_metadata_trkn; break;
169 if (c->itunes_metadata && atom.size > 8) {
170 int data_size = avio_rb32(pb);
171 int tag = avio_rl32(pb);
172 if (tag == MKTAG('d','a','t','a')) {
173 data_type = avio_rb32(pb); // type
174 avio_rb32(pb); // unknown
175 str_size = data_size - 16;
178 } else if (atom.size > 4 && key && !c->itunes_metadata) {
179 str_size = avio_rb16(pb); // string length
180 langcode = avio_rb16(pb);
181 ff_mov_lang_to_iso639(langcode, language);
184 str_size = atom.size;
186 #ifdef MOV_EXPORT_ALL_METADATA
188 snprintf(tmp_key, 5, "%.4s", (char*)&atom.type);
198 str_size = FFMIN3(sizeof(str)-1, str_size, atom.size);
201 parse(c, pb, str_size);
203 if (data_type == 3 || (data_type == 0 && langcode < 0x800)) { // MAC Encoded
204 mov_read_mac_string(c, pb, str_size, str, sizeof(str));
206 avio_read(pb, str, str_size);
209 av_dict_set(&c->fc->metadata, key, str, 0);
210 if (*language && strcmp(language, "und")) {
211 snprintf(key2, sizeof(key2), "%s-%s", key, language);
212 av_dict_set(&c->fc->metadata, key2, str, 0);
215 av_dlog(c->fc, "lang \"%3s\" ", language);
216 av_dlog(c->fc, "tag \"%s\" value \"%s\" atom \"%.4s\" %d %"PRId64"\n",
217 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)
431 uint32_t av_unused ctype;
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')) || (type == MKTAG('c','l','c','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 ff_mp4_read_descr(fc, pb, &tag);
475 if (tag == MP4ESDescrTag) {
476 ff_mp4_parse_es_descr(pb, NULL);
478 avio_rb16(pb); /* ID */
480 ff_mp4_read_descr(fc, pb, &tag);
481 if (tag == MP4DecConfigDescrTag)
482 ff_mp4_read_dec_config_descr(fc, st, pb);
486 static int mov_read_esds(MOVContext *c, AVIOContext *pb, MOVAtom atom)
488 return ff_mov_read_esds(c->fc, pb, atom);
491 static int mov_read_dac3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
494 int ac3info, acmod, lfeon, bsmod;
496 if (c->fc->nb_streams < 1)
498 st = c->fc->streams[c->fc->nb_streams-1];
500 ac3info = avio_rb24(pb);
501 bsmod = (ac3info >> 14) & 0x7;
502 acmod = (ac3info >> 11) & 0x7;
503 lfeon = (ac3info >> 10) & 0x1;
504 st->codec->channels = ((int[]){2,1,2,3,3,4,4,5})[acmod] + lfeon;
505 st->codec->audio_service_type = bsmod;
506 if (st->codec->channels > 1 && bsmod == 0x7)
507 st->codec->audio_service_type = AV_AUDIO_SERVICE_TYPE_KARAOKE;
512 static int mov_read_wfex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
516 if (c->fc->nb_streams < 1)
518 st = c->fc->streams[c->fc->nb_streams-1];
520 ff_get_wav_header(pb, st->codec, atom.size);
525 static int mov_read_pasp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
527 const int num = avio_rb32(pb);
528 const int den = avio_rb32(pb);
531 if (c->fc->nb_streams < 1)
533 st = c->fc->streams[c->fc->nb_streams-1];
535 if ((st->sample_aspect_ratio.den != 1 || st->sample_aspect_ratio.num) && // default
536 (den != st->sample_aspect_ratio.den || num != st->sample_aspect_ratio.num)) {
537 av_log(c->fc, AV_LOG_WARNING,
538 "sample aspect ratio already set to %d:%d, ignoring 'pasp' atom (%d:%d)\n",
539 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
541 } else if (den != 0) {
542 st->sample_aspect_ratio.num = num;
543 st->sample_aspect_ratio.den = den;
548 /* this atom contains actual media data */
549 static int mov_read_mdat(MOVContext *c, AVIOContext *pb, MOVAtom atom)
551 if(atom.size == 0) /* wrong one (MP4) */
554 return 0; /* now go for moov */
557 /* read major brand, minor version and compatible brands and store them as metadata */
558 static int mov_read_ftyp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
562 char minor_ver_str[11]; /* 32 bit integer -> 10 digits + null */
563 char* comp_brands_str;
564 uint8_t type[5] = {0};
566 avio_read(pb, type, 4);
567 if (strcmp(type, "qt "))
569 av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
570 av_dict_set(&c->fc->metadata, "major_brand", type, 0);
571 minor_ver = avio_rb32(pb); /* minor version */
572 snprintf(minor_ver_str, sizeof(minor_ver_str), "%d", minor_ver);
573 av_dict_set(&c->fc->metadata, "minor_version", minor_ver_str, 0);
575 comp_brand_size = atom.size - 8;
576 if (comp_brand_size < 0)
578 comp_brands_str = av_malloc(comp_brand_size + 1); /* Add null terminator */
579 if (!comp_brands_str)
580 return AVERROR(ENOMEM);
581 avio_read(pb, comp_brands_str, comp_brand_size);
582 comp_brands_str[comp_brand_size] = 0;
583 av_dict_set(&c->fc->metadata, "compatible_brands", comp_brands_str, 0);
584 av_freep(&comp_brands_str);
589 /* this atom should contain all header atoms */
590 static int mov_read_moov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
592 if (mov_read_default(c, pb, atom) < 0)
594 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
595 /* so we don't parse the whole file if over a network */
597 return 0; /* now go for mdat */
600 static int mov_read_moof(MOVContext *c, AVIOContext *pb, MOVAtom atom)
602 c->fragment.moof_offset = avio_tell(pb) - 8;
603 av_dlog(c->fc, "moof offset %"PRIx64"\n", c->fragment.moof_offset);
604 return mov_read_default(c, pb, atom);
607 static void mov_metadata_creation_time(AVDictionary **metadata, time_t time)
612 time -= 2082844800; /* seconds between 1904-01-01 and Epoch */
615 strftime(buffer, sizeof(buffer), "%Y-%m-%d %H:%M:%S", ptm);
616 av_dict_set(metadata, "creation_time", buffer, 0);
620 static int mov_read_mdhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
623 MOVStreamContext *sc;
625 char language[4] = {0};
627 time_t creation_time;
629 if (c->fc->nb_streams < 1)
631 st = c->fc->streams[c->fc->nb_streams-1];
634 version = avio_r8(pb);
636 return -1; /* unsupported */
638 avio_rb24(pb); /* flags */
640 creation_time = avio_rb64(pb);
643 creation_time = avio_rb32(pb);
644 avio_rb32(pb); /* modification time */
646 mov_metadata_creation_time(&st->metadata, creation_time);
648 sc->time_scale = avio_rb32(pb);
649 st->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
651 lang = avio_rb16(pb); /* language */
652 if (ff_mov_lang_to_iso639(lang, language))
653 av_dict_set(&st->metadata, "language", language, 0);
654 avio_rb16(pb); /* quality */
659 static int mov_read_mvhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
661 time_t creation_time;
662 int version = avio_r8(pb); /* version */
663 avio_rb24(pb); /* flags */
666 creation_time = avio_rb64(pb);
669 creation_time = avio_rb32(pb);
670 avio_rb32(pb); /* modification time */
672 mov_metadata_creation_time(&c->fc->metadata, creation_time);
673 c->time_scale = avio_rb32(pb); /* time scale */
675 av_dlog(c->fc, "time scale = %i\n", c->time_scale);
677 c->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
678 avio_rb32(pb); /* preferred scale */
680 avio_rb16(pb); /* preferred volume */
682 avio_skip(pb, 10); /* reserved */
684 avio_skip(pb, 36); /* display matrix */
686 avio_rb32(pb); /* preview time */
687 avio_rb32(pb); /* preview duration */
688 avio_rb32(pb); /* poster time */
689 avio_rb32(pb); /* selection time */
690 avio_rb32(pb); /* selection duration */
691 avio_rb32(pb); /* current time */
692 avio_rb32(pb); /* next track ID */
697 static int mov_read_smi(MOVContext *c, AVIOContext *pb, MOVAtom atom)
701 if (c->fc->nb_streams < 1)
703 st = c->fc->streams[c->fc->nb_streams-1];
705 if((uint64_t)atom.size > (1<<30))
708 // currently SVQ3 decoder expect full STSD header - so let's fake it
709 // this should be fixed and just SMI header should be passed
710 av_free(st->codec->extradata);
711 st->codec->extradata = av_mallocz(atom.size + 0x5a + FF_INPUT_BUFFER_PADDING_SIZE);
712 if (!st->codec->extradata)
713 return AVERROR(ENOMEM);
714 st->codec->extradata_size = 0x5a + atom.size;
715 memcpy(st->codec->extradata, "SVQ3", 4); // fake
716 avio_read(pb, st->codec->extradata + 0x5a, atom.size);
717 av_dlog(c->fc, "Reading SMI %"PRId64" %s\n", atom.size, st->codec->extradata + 0x5a);
721 static int mov_read_enda(MOVContext *c, AVIOContext *pb, MOVAtom atom)
726 if (c->fc->nb_streams < 1)
728 st = c->fc->streams[c->fc->nb_streams-1];
730 little_endian = avio_rb16(pb);
731 av_dlog(c->fc, "enda %d\n", little_endian);
732 if (little_endian == 1) {
733 switch (st->codec->codec_id) {
734 case CODEC_ID_PCM_S24BE:
735 st->codec->codec_id = CODEC_ID_PCM_S24LE;
737 case CODEC_ID_PCM_S32BE:
738 st->codec->codec_id = CODEC_ID_PCM_S32LE;
740 case CODEC_ID_PCM_F32BE:
741 st->codec->codec_id = CODEC_ID_PCM_F32LE;
743 case CODEC_ID_PCM_F64BE:
744 st->codec->codec_id = CODEC_ID_PCM_F64LE;
753 /* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
754 static int mov_read_extradata(MOVContext *c, AVIOContext *pb, MOVAtom atom)
760 if (c->fc->nb_streams < 1) // will happen with jp2 files
762 st= c->fc->streams[c->fc->nb_streams-1];
763 size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
764 if(size > INT_MAX || (uint64_t)atom.size > INT_MAX)
766 buf= av_realloc(st->codec->extradata, size);
769 st->codec->extradata= buf;
770 buf+= st->codec->extradata_size;
771 st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE;
772 AV_WB32( buf , atom.size + 8);
773 AV_WL32( buf + 4, atom.type);
774 avio_read(pb, buf + 8, atom.size);
778 static int mov_read_wave(MOVContext *c, AVIOContext *pb, MOVAtom atom)
782 if (c->fc->nb_streams < 1)
784 st = c->fc->streams[c->fc->nb_streams-1];
786 if((uint64_t)atom.size > (1<<30))
789 if (st->codec->codec_id == CODEC_ID_QDM2 || st->codec->codec_id == CODEC_ID_QDMC) {
790 // pass all frma atom to codec, needed at least for QDMC and QDM2
791 av_free(st->codec->extradata);
792 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
793 if (!st->codec->extradata)
794 return AVERROR(ENOMEM);
795 st->codec->extradata_size = atom.size;
796 avio_read(pb, st->codec->extradata, atom.size);
797 } else if (atom.size > 8) { /* to read frma, esds atoms */
798 if (mov_read_default(c, pb, atom) < 0)
801 avio_skip(pb, atom.size);
806 * This function reads atom content and puts data in extradata without tag
807 * nor size unlike mov_read_extradata.
809 static int mov_read_glbl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
813 if (c->fc->nb_streams < 1)
815 st = c->fc->streams[c->fc->nb_streams-1];
817 if((uint64_t)atom.size > (1<<30))
820 av_free(st->codec->extradata);
821 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
822 if (!st->codec->extradata)
823 return AVERROR(ENOMEM);
824 st->codec->extradata_size = atom.size;
825 avio_read(pb, st->codec->extradata, atom.size);
830 * An strf atom is a BITMAPINFOHEADER struct. This struct is 40 bytes itself,
831 * but can have extradata appended at the end after the 40 bytes belonging
834 static int mov_read_strf(MOVContext *c, AVIOContext *pb, MOVAtom atom)
838 if (c->fc->nb_streams < 1)
842 st = c->fc->streams[c->fc->nb_streams-1];
844 if((uint64_t)atom.size > (1<<30))
847 av_free(st->codec->extradata);
848 st->codec->extradata = av_mallocz(atom.size - 40 + FF_INPUT_BUFFER_PADDING_SIZE);
849 if (!st->codec->extradata)
850 return AVERROR(ENOMEM);
851 st->codec->extradata_size = atom.size - 40;
853 avio_read(pb, st->codec->extradata, atom.size - 40);
857 static int mov_read_stco(MOVContext *c, AVIOContext *pb, MOVAtom atom)
860 MOVStreamContext *sc;
861 unsigned int i, entries;
863 if (c->fc->nb_streams < 1)
865 st = c->fc->streams[c->fc->nb_streams-1];
868 avio_r8(pb); /* version */
869 avio_rb24(pb); /* flags */
871 entries = avio_rb32(pb);
873 if(entries >= UINT_MAX/sizeof(int64_t))
876 sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
877 if (!sc->chunk_offsets)
878 return AVERROR(ENOMEM);
879 sc->chunk_count = entries;
881 if (atom.type == MKTAG('s','t','c','o'))
882 for(i=0; i<entries; i++)
883 sc->chunk_offsets[i] = avio_rb32(pb);
884 else if (atom.type == MKTAG('c','o','6','4'))
885 for(i=0; i<entries; i++)
886 sc->chunk_offsets[i] = avio_rb64(pb);
894 * Compute codec id for 'lpcm' tag.
895 * See CoreAudioTypes and AudioStreamBasicDescription at Apple.
897 enum CodecID ff_mov_get_lpcm_codec_id(int bps, int flags)
899 if (flags & 1) { // floating point
900 if (flags & 2) { // big endian
901 if (bps == 32) return CODEC_ID_PCM_F32BE;
902 else if (bps == 64) return CODEC_ID_PCM_F64BE;
904 if (bps == 32) return CODEC_ID_PCM_F32LE;
905 else if (bps == 64) return CODEC_ID_PCM_F64LE;
911 if (flags & 4) return CODEC_ID_PCM_S8;
912 else return CODEC_ID_PCM_U8;
913 else if (bps == 16) return CODEC_ID_PCM_S16BE;
914 else if (bps == 24) return CODEC_ID_PCM_S24BE;
915 else if (bps == 32) return CODEC_ID_PCM_S32BE;
918 if (flags & 4) return CODEC_ID_PCM_S8;
919 else return CODEC_ID_PCM_U8;
920 else if (bps == 16) return CODEC_ID_PCM_S16LE;
921 else if (bps == 24) return CODEC_ID_PCM_S24LE;
922 else if (bps == 32) return CODEC_ID_PCM_S32LE;
925 return CODEC_ID_NONE;
928 int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries)
931 MOVStreamContext *sc;
932 int j, pseudo_stream_id;
934 if (c->fc->nb_streams < 1)
936 st = c->fc->streams[c->fc->nb_streams-1];
939 for(pseudo_stream_id=0; pseudo_stream_id<entries; pseudo_stream_id++) {
940 //Parsing Sample description table
943 MOVAtom a = { AV_RL32("stsd") };
944 int64_t start_pos = avio_tell(pb);
945 int size = avio_rb32(pb); /* size */
946 uint32_t format = avio_rl32(pb); /* data format */
949 avio_rb32(pb); /* reserved */
950 avio_rb16(pb); /* reserved */
951 dref_id = avio_rb16(pb);
954 if (st->codec->codec_tag &&
955 st->codec->codec_tag != format &&
956 (c->fc->video_codec_id ? ff_codec_get_id(codec_movvideo_tags, format) != c->fc->video_codec_id
957 : st->codec->codec_tag != MKTAG('j','p','e','g'))
959 /* Multiple fourcc, we skip JPEG. This is not correct, we should
960 * export it as a separate AVStream but this needs a few changes
961 * in the MOV demuxer, patch welcome. */
963 av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n");
964 avio_skip(pb, size - (avio_tell(pb) - start_pos));
967 /* we cannot demux concatenated h264 streams because of different extradata */
968 if (st->codec->codec_tag && st->codec->codec_tag == AV_RL32("avc1"))
970 sc->pseudo_stream_id = st->codec->codec_tag ? -1 : pseudo_stream_id;
971 sc->dref_id= dref_id;
973 st->codec->codec_tag = format;
974 id = ff_codec_get_id(codec_movaudio_tags, format);
975 if (id<=0 && ((format&0xFFFF) == 'm'+('s'<<8) || (format&0xFFFF) == 'T'+('S'<<8)))
976 id = ff_codec_get_id(ff_codec_wav_tags, av_bswap32(format)&0xFFFF);
978 if (st->codec->codec_type != AVMEDIA_TYPE_VIDEO && id > 0) {
979 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
980 } else if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO && /* do not overwrite codec type */
981 format && format != MKTAG('m','p','4','s')) { /* skip old asf mpeg4 tag */
982 id = ff_codec_get_id(codec_movvideo_tags, format);
984 id = ff_codec_get_id(ff_codec_bmp_tags, format);
986 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
987 else if(st->codec->codec_type == AVMEDIA_TYPE_DATA){
988 id = ff_codec_get_id(ff_codec_movsubtitle_tags, format);
990 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
994 av_dlog(c->fc, "size=%d 4CC= %c%c%c%c codec_type=%d\n", size,
995 (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff,
996 (format >> 24) & 0xff, st->codec->codec_type);
998 if(st->codec->codec_type==AVMEDIA_TYPE_VIDEO) {
999 unsigned int color_depth, len;
1000 int color_greyscale;
1002 st->codec->codec_id = id;
1003 avio_rb16(pb); /* version */
1004 avio_rb16(pb); /* revision level */
1005 avio_rb32(pb); /* vendor */
1006 avio_rb32(pb); /* temporal quality */
1007 avio_rb32(pb); /* spatial quality */
1009 st->codec->width = avio_rb16(pb); /* width */
1010 st->codec->height = avio_rb16(pb); /* height */
1012 avio_rb32(pb); /* horiz resolution */
1013 avio_rb32(pb); /* vert resolution */
1014 avio_rb32(pb); /* data size, always 0 */
1015 avio_rb16(pb); /* frames per samples */
1017 len = avio_r8(pb); /* codec name, pascal string */
1020 mov_read_mac_string(c, pb, len, st->codec->codec_name, 32);
1022 avio_skip(pb, 31 - len);
1023 /* codec_tag YV12 triggers an UV swap in rawdec.c */
1024 if (!memcmp(st->codec->codec_name, "Planar Y'CbCr 8-bit 4:2:0", 25))
1025 st->codec->codec_tag=MKTAG('I', '4', '2', '0');
1027 st->codec->bits_per_coded_sample = avio_rb16(pb); /* depth */
1028 st->codec->color_table_id = avio_rb16(pb); /* colortable id */
1029 av_dlog(c->fc, "depth %d, ctab id %d\n",
1030 st->codec->bits_per_coded_sample, st->codec->color_table_id);
1031 /* figure out the palette situation */
1032 color_depth = st->codec->bits_per_coded_sample & 0x1F;
1033 color_greyscale = st->codec->bits_per_coded_sample & 0x20;
1035 /* if the depth is 2, 4, or 8 bpp, file is palettized */
1036 if ((color_depth == 2) || (color_depth == 4) ||
1037 (color_depth == 8)) {
1038 /* for palette traversal */
1039 unsigned int color_start, color_count, color_end;
1040 unsigned char r, g, b;
1042 if (color_greyscale) {
1043 int color_index, color_dec;
1044 /* compute the greyscale palette */
1045 st->codec->bits_per_coded_sample = color_depth;
1046 color_count = 1 << color_depth;
1048 color_dec = 256 / (color_count - 1);
1049 for (j = 0; j < color_count; j++) {
1050 r = g = b = color_index;
1052 (r << 16) | (g << 8) | (b);
1053 color_index -= color_dec;
1054 if (color_index < 0)
1057 } else if (st->codec->color_table_id) {
1058 const uint8_t *color_table;
1059 /* if flag bit 3 is set, use the default palette */
1060 color_count = 1 << color_depth;
1061 if (color_depth == 2)
1062 color_table = ff_qt_default_palette_4;
1063 else if (color_depth == 4)
1064 color_table = ff_qt_default_palette_16;
1066 color_table = ff_qt_default_palette_256;
1068 for (j = 0; j < color_count; j++) {
1069 r = color_table[j * 3 + 0];
1070 g = color_table[j * 3 + 1];
1071 b = color_table[j * 3 + 2];
1073 (r << 16) | (g << 8) | (b);
1076 /* load the palette from the file */
1077 color_start = avio_rb32(pb);
1078 color_count = avio_rb16(pb);
1079 color_end = avio_rb16(pb);
1080 if ((color_start <= 255) &&
1081 (color_end <= 255)) {
1082 for (j = color_start; j <= color_end; j++) {
1083 /* each R, G, or B component is 16 bits;
1084 * only use the top 8 bits; skip alpha bytes
1095 (r << 16) | (g << 8) | (b);
1099 sc->has_palette = 1;
1101 } else if(st->codec->codec_type==AVMEDIA_TYPE_AUDIO) {
1102 int bits_per_sample, flags;
1103 uint16_t version = avio_rb16(pb);
1105 st->codec->codec_id = id;
1106 avio_rb16(pb); /* revision level */
1107 avio_rb32(pb); /* vendor */
1109 st->codec->channels = avio_rb16(pb); /* channel count */
1110 av_dlog(c->fc, "audio channels %d\n", st->codec->channels);
1111 st->codec->bits_per_coded_sample = avio_rb16(pb); /* sample size */
1113 sc->audio_cid = avio_rb16(pb);
1114 avio_rb16(pb); /* packet size = 0 */
1116 st->codec->sample_rate = ((avio_rb32(pb) >> 16));
1118 //Read QT version 1 fields. In version 0 these do not exist.
1119 av_dlog(c->fc, "version =%d, isom =%d\n",version,c->isom);
1122 sc->samples_per_frame = avio_rb32(pb);
1123 avio_rb32(pb); /* bytes per packet */
1124 sc->bytes_per_frame = avio_rb32(pb);
1125 avio_rb32(pb); /* bytes per sample */
1126 } else if(version==2) {
1127 avio_rb32(pb); /* sizeof struct only */
1128 st->codec->sample_rate = av_int2dbl(avio_rb64(pb)); /* float 64 */
1129 st->codec->channels = avio_rb32(pb);
1130 avio_rb32(pb); /* always 0x7F000000 */
1131 st->codec->bits_per_coded_sample = avio_rb32(pb); /* bits per channel if sound is uncompressed */
1132 flags = avio_rb32(pb); /* lpcm format specific flag */
1133 sc->bytes_per_frame = avio_rb32(pb); /* bytes per audio packet if constant */
1134 sc->samples_per_frame = avio_rb32(pb); /* lpcm frames per audio packet if constant */
1135 if (format == MKTAG('l','p','c','m'))
1136 st->codec->codec_id = ff_mov_get_lpcm_codec_id(st->codec->bits_per_coded_sample, flags);
1140 switch (st->codec->codec_id) {
1141 case CODEC_ID_PCM_S8:
1142 case CODEC_ID_PCM_U8:
1143 if (st->codec->bits_per_coded_sample == 16)
1144 st->codec->codec_id = CODEC_ID_PCM_S16BE;
1146 case CODEC_ID_PCM_S16LE:
1147 case CODEC_ID_PCM_S16BE:
1148 if (st->codec->bits_per_coded_sample == 8)
1149 st->codec->codec_id = CODEC_ID_PCM_S8;
1150 else if (st->codec->bits_per_coded_sample == 24)
1151 st->codec->codec_id =
1152 st->codec->codec_id == CODEC_ID_PCM_S16BE ?
1153 CODEC_ID_PCM_S24BE : CODEC_ID_PCM_S24LE;
1155 /* set values for old format before stsd version 1 appeared */
1156 case CODEC_ID_MACE3:
1157 sc->samples_per_frame = 6;
1158 sc->bytes_per_frame = 2*st->codec->channels;
1160 case CODEC_ID_MACE6:
1161 sc->samples_per_frame = 6;
1162 sc->bytes_per_frame = 1*st->codec->channels;
1164 case CODEC_ID_ADPCM_IMA_QT:
1165 sc->samples_per_frame = 64;
1166 sc->bytes_per_frame = 34*st->codec->channels;
1169 sc->samples_per_frame = 160;
1170 sc->bytes_per_frame = 33;
1176 bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
1177 if (bits_per_sample) {
1178 st->codec->bits_per_coded_sample = bits_per_sample;
1179 sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
1181 } else if(st->codec->codec_type==AVMEDIA_TYPE_SUBTITLE){
1182 // ttxt stsd contains display flags, justification, background
1183 // color, fonts, and default styles, so fake an atom to read it
1184 MOVAtom fake_atom = { .size = size - (avio_tell(pb) - start_pos) };
1185 if (format != AV_RL32("mp4s")) // mp4s contains a regular esds atom
1186 mov_read_glbl(c, pb, fake_atom);
1187 st->codec->codec_id= id;
1188 st->codec->width = sc->width;
1189 st->codec->height = sc->height;
1191 /* other codec type, just skip (rtp, mp4s, tmcd ...) */
1192 avio_skip(pb, size - (avio_tell(pb) - start_pos));
1194 /* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */
1195 a.size = size - (avio_tell(pb) - start_pos);
1197 if (mov_read_default(c, pb, a) < 0)
1199 } else if (a.size > 0)
1200 avio_skip(pb, a.size);
1203 if(st->codec->codec_type==AVMEDIA_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1)
1204 st->codec->sample_rate= sc->time_scale;
1206 /* special codec parameters handling */
1207 switch (st->codec->codec_id) {
1208 #if CONFIG_DV_DEMUXER
1209 case CODEC_ID_DVAUDIO:
1210 c->dv_fctx = avformat_alloc_context();
1211 c->dv_demux = dv_init_demux(c->dv_fctx);
1213 av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
1216 sc->dv_audio_container = 1;
1217 st->codec->codec_id = CODEC_ID_PCM_S16LE;
1220 /* no ifdef since parameters are always those */
1221 case CODEC_ID_QCELP:
1222 // force sample rate for qcelp when not stored in mov
1223 if (st->codec->codec_tag != MKTAG('Q','c','l','p'))
1224 st->codec->sample_rate = 8000;
1225 st->codec->frame_size= 160;
1226 st->codec->channels= 1; /* really needed */
1228 case CODEC_ID_AMR_NB:
1229 case CODEC_ID_AMR_WB:
1230 st->codec->frame_size= sc->samples_per_frame;
1231 st->codec->channels= 1; /* really needed */
1232 /* force sample rate for amr, stsd in 3gp does not store sample rate */
1233 if (st->codec->codec_id == CODEC_ID_AMR_NB)
1234 st->codec->sample_rate = 8000;
1235 else if (st->codec->codec_id == CODEC_ID_AMR_WB)
1236 st->codec->sample_rate = 16000;
1240 st->codec->codec_type = AVMEDIA_TYPE_AUDIO; /* force type after stsd for m1a hdlr */
1241 st->need_parsing = AVSTREAM_PARSE_FULL;
1244 case CODEC_ID_ADPCM_MS:
1245 case CODEC_ID_ADPCM_IMA_WAV:
1246 st->codec->frame_size = sc->samples_per_frame;
1247 st->codec->block_align = sc->bytes_per_frame;
1250 if (st->codec->extradata_size == 36) {
1251 st->codec->frame_size = AV_RB32(st->codec->extradata+12);
1252 st->codec->channels = AV_RB8 (st->codec->extradata+21);
1253 st->codec->sample_rate = AV_RB32(st->codec->extradata+32);
1263 static int mov_read_stsd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1267 avio_r8(pb); /* version */
1268 avio_rb24(pb); /* flags */
1269 entries = avio_rb32(pb);
1271 return ff_mov_read_stsd_entries(c, pb, entries);
1274 static int mov_read_stsc(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1277 MOVStreamContext *sc;
1278 unsigned int i, entries;
1280 if (c->fc->nb_streams < 1)
1282 st = c->fc->streams[c->fc->nb_streams-1];
1285 avio_r8(pb); /* version */
1286 avio_rb24(pb); /* flags */
1288 entries = avio_rb32(pb);
1290 av_dlog(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
1292 if(entries >= UINT_MAX / sizeof(*sc->stsc_data))
1294 sc->stsc_data = av_malloc(entries * sizeof(*sc->stsc_data));
1296 return AVERROR(ENOMEM);
1297 sc->stsc_count = entries;
1299 for(i=0; i<entries; i++) {
1300 sc->stsc_data[i].first = avio_rb32(pb);
1301 sc->stsc_data[i].count = avio_rb32(pb);
1302 sc->stsc_data[i].id = avio_rb32(pb);
1307 static int mov_read_stps(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1310 MOVStreamContext *sc;
1311 unsigned i, entries;
1313 if (c->fc->nb_streams < 1)
1315 st = c->fc->streams[c->fc->nb_streams-1];
1318 avio_rb32(pb); // version + flags
1320 entries = avio_rb32(pb);
1321 if (entries >= UINT_MAX / sizeof(*sc->stps_data))
1323 sc->stps_data = av_malloc(entries * sizeof(*sc->stps_data));
1325 return AVERROR(ENOMEM);
1326 sc->stps_count = entries;
1328 for (i = 0; i < entries; i++) {
1329 sc->stps_data[i] = avio_rb32(pb);
1330 //av_dlog(c->fc, "stps %d\n", sc->stps_data[i]);
1336 static int mov_read_stss(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1339 MOVStreamContext *sc;
1340 unsigned int i, entries;
1342 if (c->fc->nb_streams < 1)
1344 st = c->fc->streams[c->fc->nb_streams-1];
1347 avio_r8(pb); /* version */
1348 avio_rb24(pb); /* flags */
1350 entries = avio_rb32(pb);
1352 av_dlog(c->fc, "keyframe_count = %d\n", entries);
1354 if(entries >= UINT_MAX / sizeof(int))
1356 sc->keyframes = av_malloc(entries * sizeof(int));
1358 return AVERROR(ENOMEM);
1359 sc->keyframe_count = entries;
1361 for(i=0; i<entries; i++) {
1362 sc->keyframes[i] = avio_rb32(pb);
1363 //av_dlog(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
1368 static int mov_read_stsz(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1371 MOVStreamContext *sc;
1372 unsigned int i, entries, sample_size, field_size, num_bytes;
1376 if (c->fc->nb_streams < 1)
1378 st = c->fc->streams[c->fc->nb_streams-1];
1381 avio_r8(pb); /* version */
1382 avio_rb24(pb); /* flags */
1384 if (atom.type == MKTAG('s','t','s','z')) {
1385 sample_size = avio_rb32(pb);
1386 if (!sc->sample_size) /* do not overwrite value computed in stsd */
1387 sc->sample_size = sample_size;
1391 avio_rb24(pb); /* reserved */
1392 field_size = avio_r8(pb);
1394 entries = avio_rb32(pb);
1396 av_dlog(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, entries);
1398 sc->sample_count = entries;
1402 if (field_size != 4 && field_size != 8 && field_size != 16 && field_size != 32) {
1403 av_log(c->fc, AV_LOG_ERROR, "Invalid sample field size %d\n", field_size);
1407 if (entries >= UINT_MAX / sizeof(int) || entries >= (UINT_MAX - 4) / field_size)
1409 sc->sample_sizes = av_malloc(entries * sizeof(int));
1410 if (!sc->sample_sizes)
1411 return AVERROR(ENOMEM);
1413 num_bytes = (entries*field_size+4)>>3;
1415 buf = av_malloc(num_bytes+FF_INPUT_BUFFER_PADDING_SIZE);
1417 av_freep(&sc->sample_sizes);
1418 return AVERROR(ENOMEM);
1421 if (avio_read(pb, buf, num_bytes) < num_bytes) {
1422 av_freep(&sc->sample_sizes);
1427 init_get_bits(&gb, buf, 8*num_bytes);
1429 for(i=0; i<entries; i++)
1430 sc->sample_sizes[i] = get_bits_long(&gb, field_size);
1436 static int mov_read_stts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1439 MOVStreamContext *sc;
1440 unsigned int i, entries;
1442 int64_t total_sample_count=0;
1444 if (c->fc->nb_streams < 1)
1446 st = c->fc->streams[c->fc->nb_streams-1];
1449 avio_r8(pb); /* version */
1450 avio_rb24(pb); /* flags */
1451 entries = avio_rb32(pb);
1453 av_dlog(c->fc, "track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries);
1455 if(entries >= UINT_MAX / sizeof(*sc->stts_data))
1457 sc->stts_data = av_malloc(entries * sizeof(*sc->stts_data));
1459 return AVERROR(ENOMEM);
1460 sc->stts_count = entries;
1462 for(i=0; i<entries; i++) {
1463 int sample_duration;
1466 sample_count=avio_rb32(pb);
1467 sample_duration = avio_rb32(pb);
1468 sc->stts_data[i].count= sample_count;
1469 sc->stts_data[i].duration= sample_duration;
1471 av_dlog(c->fc, "sample_count=%d, sample_duration=%d\n",sample_count,sample_duration);
1473 duration+=(int64_t)sample_duration*sample_count;
1474 total_sample_count+=sample_count;
1477 st->nb_frames= total_sample_count;
1479 st->duration= duration;
1483 static int mov_read_ctts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1486 MOVStreamContext *sc;
1487 unsigned int i, entries;
1489 if (c->fc->nb_streams < 1)
1491 st = c->fc->streams[c->fc->nb_streams-1];
1494 avio_r8(pb); /* version */
1495 avio_rb24(pb); /* flags */
1496 entries = avio_rb32(pb);
1498 av_dlog(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
1500 if(entries >= UINT_MAX / sizeof(*sc->ctts_data))
1502 sc->ctts_data = av_malloc(entries * sizeof(*sc->ctts_data));
1504 return AVERROR(ENOMEM);
1505 sc->ctts_count = entries;
1507 for(i=0; i<entries; i++) {
1508 int count =avio_rb32(pb);
1509 int duration =avio_rb32(pb);
1511 sc->ctts_data[i].count = count;
1512 sc->ctts_data[i].duration= duration;
1514 sc->dts_shift = FFMAX(sc->dts_shift, -duration);
1517 av_dlog(c->fc, "dts shift %d\n", sc->dts_shift);
1522 static void mov_build_index(MOVContext *mov, AVStream *st)
1524 MOVStreamContext *sc = st->priv_data;
1525 int64_t current_offset;
1526 int64_t current_dts = 0;
1527 unsigned int stts_index = 0;
1528 unsigned int stsc_index = 0;
1529 unsigned int stss_index = 0;
1530 unsigned int stps_index = 0;
1532 uint64_t stream_size = 0;
1534 /* adjust first dts according to edit list */
1535 if (sc->time_offset && mov->time_scale > 0) {
1536 if (sc->time_offset < 0)
1537 sc->time_offset = av_rescale(sc->time_offset, sc->time_scale, mov->time_scale);
1538 current_dts = -sc->time_offset;
1539 if (sc->ctts_data && sc->stts_data &&
1540 sc->ctts_data[0].duration / sc->stts_data[0].duration > 16) {
1541 /* more than 16 frames delay, dts are likely wrong
1542 this happens with files created by iMovie */
1544 st->codec->has_b_frames = 1;
1548 /* only use old uncompressed audio chunk demuxing when stts specifies it */
1549 if (!(st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
1550 sc->stts_count == 1 && sc->stts_data[0].duration == 1)) {
1551 unsigned int current_sample = 0;
1552 unsigned int stts_sample = 0;
1553 unsigned int sample_size;
1554 unsigned int distance = 0;
1555 int key_off = sc->keyframes && sc->keyframes[0] == 1;
1557 current_dts -= sc->dts_shift;
1559 if (sc->sample_count >= UINT_MAX / sizeof(*st->index_entries))
1561 st->index_entries = av_malloc(sc->sample_count*sizeof(*st->index_entries));
1562 if (!st->index_entries)
1564 st->index_entries_allocated_size = sc->sample_count*sizeof(*st->index_entries);
1566 for (i = 0; i < sc->chunk_count; i++) {
1567 current_offset = sc->chunk_offsets[i];
1568 while (stsc_index + 1 < sc->stsc_count &&
1569 i + 1 == sc->stsc_data[stsc_index + 1].first)
1571 for (j = 0; j < sc->stsc_data[stsc_index].count; j++) {
1573 if (current_sample >= sc->sample_count) {
1574 av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
1578 if (!sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index]) {
1580 if (stss_index + 1 < sc->keyframe_count)
1582 } else if (sc->stps_count && current_sample+key_off == sc->stps_data[stps_index]) {
1584 if (stps_index + 1 < sc->stps_count)
1589 sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
1590 if(sc->pseudo_stream_id == -1 ||
1591 sc->stsc_data[stsc_index].id - 1 == sc->pseudo_stream_id) {
1592 AVIndexEntry *e = &st->index_entries[st->nb_index_entries++];
1593 e->pos = current_offset;
1594 e->timestamp = current_dts;
1595 e->size = sample_size;
1596 e->min_distance = distance;
1597 e->flags = keyframe ? AVINDEX_KEYFRAME : 0;
1598 av_dlog(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
1599 "size %d, distance %d, keyframe %d\n", st->index, current_sample,
1600 current_offset, current_dts, sample_size, distance, keyframe);
1603 current_offset += sample_size;
1604 stream_size += sample_size;
1605 current_dts += sc->stts_data[stts_index].duration;
1609 if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
1615 if (st->duration > 0)
1616 st->codec->bit_rate = stream_size*8*sc->time_scale/st->duration;
1618 unsigned chunk_samples, total = 0;
1620 // compute total chunk count
1621 for (i = 0; i < sc->stsc_count; i++) {
1622 unsigned count, chunk_count;
1624 chunk_samples = sc->stsc_data[i].count;
1625 if (sc->samples_per_frame && chunk_samples % sc->samples_per_frame) {
1626 av_log(mov->fc, AV_LOG_ERROR, "error unaligned chunk\n");
1630 if (sc->samples_per_frame >= 160) { // gsm
1631 count = chunk_samples / sc->samples_per_frame;
1632 } else if (sc->samples_per_frame > 1) {
1633 unsigned samples = (1024/sc->samples_per_frame)*sc->samples_per_frame;
1634 count = (chunk_samples+samples-1) / samples;
1636 count = (chunk_samples+1023) / 1024;
1639 if (i < sc->stsc_count - 1)
1640 chunk_count = sc->stsc_data[i+1].first - sc->stsc_data[i].first;
1642 chunk_count = sc->chunk_count - (sc->stsc_data[i].first - 1);
1643 total += chunk_count * count;
1646 av_dlog(mov->fc, "chunk count %d\n", total);
1647 if (total >= UINT_MAX / sizeof(*st->index_entries))
1649 st->index_entries = av_malloc(total*sizeof(*st->index_entries));
1650 if (!st->index_entries)
1652 st->index_entries_allocated_size = total*sizeof(*st->index_entries);
1655 for (i = 0; i < sc->chunk_count; i++) {
1656 current_offset = sc->chunk_offsets[i];
1657 if (stsc_index + 1 < sc->stsc_count &&
1658 i + 1 == sc->stsc_data[stsc_index + 1].first)
1660 chunk_samples = sc->stsc_data[stsc_index].count;
1662 while (chunk_samples > 0) {
1664 unsigned size, samples;
1666 if (sc->samples_per_frame >= 160) { // gsm
1667 samples = sc->samples_per_frame;
1668 size = sc->bytes_per_frame;
1670 if (sc->samples_per_frame > 1) {
1671 samples = FFMIN((1024 / sc->samples_per_frame)*
1672 sc->samples_per_frame, chunk_samples);
1673 size = (samples / sc->samples_per_frame) * sc->bytes_per_frame;
1675 samples = FFMIN(1024, chunk_samples);
1676 size = samples * sc->sample_size;
1680 if (st->nb_index_entries >= total) {
1681 av_log(mov->fc, AV_LOG_ERROR, "wrong chunk count %d\n", total);
1684 e = &st->index_entries[st->nb_index_entries++];
1685 e->pos = current_offset;
1686 e->timestamp = current_dts;
1688 e->min_distance = 0;
1689 e->flags = AVINDEX_KEYFRAME;
1690 av_dlog(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", "
1691 "size %d, duration %d\n", st->index, i, current_offset, current_dts,
1694 current_offset += size;
1695 current_dts += samples;
1696 chunk_samples -= samples;
1702 static int mov_open_dref(AVIOContext **pb, char *src, MOVDref *ref)
1704 /* try relative path, we do not try the absolute because it can leak information about our
1705 system to an attacker */
1706 if (ref->nlvl_to > 0 && ref->nlvl_from > 0) {
1707 char filename[1024];
1711 /* find a source dir */
1712 src_path = strrchr(src, '/');
1718 /* find a next level down to target */
1719 for (i = 0, l = strlen(ref->path) - 1; l >= 0; l--)
1720 if (ref->path[l] == '/') {
1721 if (i == ref->nlvl_to - 1)
1727 /* compose filename if next level down to target was found */
1728 if (i == ref->nlvl_to - 1 && src_path - src < sizeof(filename)) {
1729 memcpy(filename, src, src_path - src);
1730 filename[src_path - src] = 0;
1732 for (i = 1; i < ref->nlvl_from; i++)
1733 av_strlcat(filename, "../", 1024);
1735 av_strlcat(filename, ref->path + l + 1, 1024);
1737 if (!avio_open(pb, filename, AVIO_FLAG_READ))
1742 return AVERROR(ENOENT);
1745 static int mov_read_trak(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1748 MOVStreamContext *sc;
1751 st = av_new_stream(c->fc, c->fc->nb_streams);
1752 if (!st) return AVERROR(ENOMEM);
1753 sc = av_mallocz(sizeof(MOVStreamContext));
1754 if (!sc) return AVERROR(ENOMEM);
1757 st->codec->codec_type = AVMEDIA_TYPE_DATA;
1758 sc->ffindex = st->index;
1760 if ((ret = mov_read_default(c, pb, atom)) < 0)
1764 if (sc->chunk_count && (!sc->stts_count || !sc->stsc_count ||
1765 (!sc->sample_size && !sc->sample_count))) {
1766 av_log(c->fc, AV_LOG_ERROR, "stream %d, missing mandatory atoms, broken header\n",
1771 if (sc->time_scale <= 0) {
1772 av_log(c->fc, AV_LOG_WARNING, "stream %d, timescale not set\n", st->index);
1773 sc->time_scale = c->time_scale;
1774 if (sc->time_scale <= 0)
1778 av_set_pts_info(st, 64, 1, sc->time_scale);
1780 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
1781 !st->codec->frame_size && sc->stts_count == 1) {
1782 st->codec->frame_size = av_rescale(sc->stts_data[0].duration,
1783 st->codec->sample_rate, sc->time_scale);
1784 av_dlog(c->fc, "frame size %d\n", st->codec->frame_size);
1787 mov_build_index(c, st);
1789 if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) {
1790 MOVDref *dref = &sc->drefs[sc->dref_id - 1];
1791 if (mov_open_dref(&sc->pb, c->fc->filename, dref) < 0)
1792 av_log(c->fc, AV_LOG_ERROR,
1793 "stream %d, error opening alias: path='%s', dir='%s', "
1794 "filename='%s', volume='%s', nlvl_from=%d, nlvl_to=%d\n",
1795 st->index, dref->path, dref->dir, dref->filename,
1796 dref->volume, dref->nlvl_from, dref->nlvl_to);
1800 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1801 if (!st->sample_aspect_ratio.num &&
1802 (st->codec->width != sc->width || st->codec->height != sc->height)) {
1803 st->sample_aspect_ratio = av_d2q(((double)st->codec->height * sc->width) /
1804 ((double)st->codec->width * sc->height), INT_MAX);
1807 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
1808 sc->time_scale*st->nb_frames, st->duration, INT_MAX);
1810 if (sc->stts_count == 1 || (sc->stts_count == 2 && sc->stts_data[1].count == 1))
1811 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den,
1812 sc->time_scale, sc->stts_data[0].duration, INT_MAX);
1815 switch (st->codec->codec_id) {
1816 #if CONFIG_H261_DECODER
1819 #if CONFIG_H263_DECODER
1822 #if CONFIG_H264_DECODER
1825 #if CONFIG_MPEG4_DECODER
1826 case CODEC_ID_MPEG4:
1828 st->codec->width = 0; /* let decoder init width/height */
1829 st->codec->height= 0;
1833 /* Do not need those anymore. */
1834 av_freep(&sc->chunk_offsets);
1835 av_freep(&sc->stsc_data);
1836 av_freep(&sc->sample_sizes);
1837 av_freep(&sc->keyframes);
1838 av_freep(&sc->stts_data);
1839 av_freep(&sc->stps_data);
1844 static int mov_read_ilst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1847 c->itunes_metadata = 1;
1848 ret = mov_read_default(c, pb, atom);
1849 c->itunes_metadata = 0;
1853 static int mov_read_meta(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1855 while (atom.size > 8) {
1856 uint32_t tag = avio_rl32(pb);
1858 if (tag == MKTAG('h','d','l','r')) {
1859 avio_seek(pb, -8, SEEK_CUR);
1861 return mov_read_default(c, pb, atom);
1867 static int mov_read_tkhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1872 int64_t disp_transform[2];
1873 int display_matrix[3][2];
1875 MOVStreamContext *sc;
1878 if (c->fc->nb_streams < 1)
1880 st = c->fc->streams[c->fc->nb_streams-1];
1883 version = avio_r8(pb);
1884 avio_rb24(pb); /* flags */
1886 MOV_TRACK_ENABLED 0x0001
1887 MOV_TRACK_IN_MOVIE 0x0002
1888 MOV_TRACK_IN_PREVIEW 0x0004
1889 MOV_TRACK_IN_POSTER 0x0008
1896 avio_rb32(pb); /* creation time */
1897 avio_rb32(pb); /* modification time */
1899 st->id = (int)avio_rb32(pb); /* track id (NOT 0 !)*/
1900 avio_rb32(pb); /* reserved */
1902 /* highlevel (considering edits) duration in movie timebase */
1903 (version == 1) ? avio_rb64(pb) : avio_rb32(pb);
1904 avio_rb32(pb); /* reserved */
1905 avio_rb32(pb); /* reserved */
1907 avio_rb16(pb); /* layer */
1908 avio_rb16(pb); /* alternate group */
1909 avio_rb16(pb); /* volume */
1910 avio_rb16(pb); /* reserved */
1912 //read in the display matrix (outlined in ISO 14496-12, Section 6.2.2)
1913 // they're kept in fixed point format through all calculations
1914 // ignore u,v,z b/c we don't need the scale factor to calc aspect ratio
1915 for (i = 0; i < 3; i++) {
1916 display_matrix[i][0] = avio_rb32(pb); // 16.16 fixed point
1917 display_matrix[i][1] = avio_rb32(pb); // 16.16 fixed point
1918 avio_rb32(pb); // 2.30 fixed point (not used)
1921 width = avio_rb32(pb); // 16.16 fixed point track width
1922 height = avio_rb32(pb); // 16.16 fixed point track height
1923 sc->width = width >> 16;
1924 sc->height = height >> 16;
1926 // transform the display width/height according to the matrix
1927 // skip this if the display matrix is the default identity matrix
1928 // or if it is rotating the picture, ex iPhone 3GS
1929 // to keep the same scale, use [width height 1<<16]
1930 if (width && height &&
1931 ((display_matrix[0][0] != 65536 ||
1932 display_matrix[1][1] != 65536) &&
1933 !display_matrix[0][1] &&
1934 !display_matrix[1][0] &&
1935 !display_matrix[2][0] && !display_matrix[2][1])) {
1936 for (i = 0; i < 2; i++)
1938 (int64_t) width * display_matrix[0][i] +
1939 (int64_t) height * display_matrix[1][i] +
1940 ((int64_t) display_matrix[2][i] << 16);
1942 //sample aspect ratio is new width/height divided by old width/height
1943 st->sample_aspect_ratio = av_d2q(
1944 ((double) disp_transform[0] * height) /
1945 ((double) disp_transform[1] * width), INT_MAX);
1950 static int mov_read_tfhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1952 MOVFragment *frag = &c->fragment;
1953 MOVTrackExt *trex = NULL;
1954 int flags, track_id, i;
1956 avio_r8(pb); /* version */
1957 flags = avio_rb24(pb);
1959 track_id = avio_rb32(pb);
1962 frag->track_id = track_id;
1963 for (i = 0; i < c->trex_count; i++)
1964 if (c->trex_data[i].track_id == frag->track_id) {
1965 trex = &c->trex_data[i];
1969 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding trex\n");
1973 if (flags & 0x01) frag->base_data_offset = avio_rb64(pb);
1974 else frag->base_data_offset = frag->moof_offset;
1975 if (flags & 0x02) frag->stsd_id = avio_rb32(pb);
1976 else frag->stsd_id = trex->stsd_id;
1978 frag->duration = flags & 0x08 ? avio_rb32(pb) : trex->duration;
1979 frag->size = flags & 0x10 ? avio_rb32(pb) : trex->size;
1980 frag->flags = flags & 0x20 ? avio_rb32(pb) : trex->flags;
1981 av_dlog(c->fc, "frag flags 0x%x\n", frag->flags);
1985 static int mov_read_chap(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1987 c->chapter_track = avio_rb32(pb);
1991 static int mov_read_trex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1995 if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data))
1997 trex = av_realloc(c->trex_data, (c->trex_count+1)*sizeof(*c->trex_data));
1999 return AVERROR(ENOMEM);
2000 c->trex_data = trex;
2001 trex = &c->trex_data[c->trex_count++];
2002 avio_r8(pb); /* version */
2003 avio_rb24(pb); /* flags */
2004 trex->track_id = avio_rb32(pb);
2005 trex->stsd_id = avio_rb32(pb);
2006 trex->duration = avio_rb32(pb);
2007 trex->size = avio_rb32(pb);
2008 trex->flags = avio_rb32(pb);
2012 static int mov_read_trun(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2014 MOVFragment *frag = &c->fragment;
2015 AVStream *st = NULL;
2016 MOVStreamContext *sc;
2020 int data_offset = 0;
2021 unsigned entries, first_sample_flags = frag->flags;
2022 int flags, distance, i;
2024 for (i = 0; i < c->fc->nb_streams; i++) {
2025 if (c->fc->streams[i]->id == frag->track_id) {
2026 st = c->fc->streams[i];
2031 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id);
2035 if (sc->pseudo_stream_id+1 != frag->stsd_id)
2037 avio_r8(pb); /* version */
2038 flags = avio_rb24(pb);
2039 entries = avio_rb32(pb);
2040 av_dlog(c->fc, "flags 0x%x entries %d\n", flags, entries);
2042 /* Always assume the presence of composition time offsets.
2043 * Without this assumption, for instance, we cannot deal with a track in fragmented movies that meet the following.
2044 * 1) in the initial movie, there are no samples.
2045 * 2) in the first movie fragment, there is only one sample without composition time offset.
2046 * 3) in the subsequent movie fragments, there are samples with composition time offset. */
2047 if (!sc->ctts_count && sc->sample_count)
2049 /* Complement ctts table if moov atom doesn't have ctts atom. */
2050 ctts_data = av_malloc(sizeof(*sc->ctts_data));
2052 return AVERROR(ENOMEM);
2053 sc->ctts_data = ctts_data;
2054 sc->ctts_data[sc->ctts_count].count = sc->sample_count;
2055 sc->ctts_data[sc->ctts_count].duration = 0;
2058 if ((uint64_t)entries+sc->ctts_count >= UINT_MAX/sizeof(*sc->ctts_data))
2060 ctts_data = av_realloc(sc->ctts_data,
2061 (entries+sc->ctts_count)*sizeof(*sc->ctts_data));
2063 return AVERROR(ENOMEM);
2064 sc->ctts_data = ctts_data;
2066 if (flags & 0x001) data_offset = avio_rb32(pb);
2067 if (flags & 0x004) first_sample_flags = avio_rb32(pb);
2068 dts = st->duration - sc->time_offset;
2069 offset = frag->base_data_offset + data_offset;
2071 av_dlog(c->fc, "first sample flags 0x%x\n", first_sample_flags);
2072 for (i = 0; i < entries; i++) {
2073 unsigned sample_size = frag->size;
2074 int sample_flags = i ? frag->flags : first_sample_flags;
2075 unsigned sample_duration = frag->duration;
2078 if (flags & 0x100) sample_duration = avio_rb32(pb);
2079 if (flags & 0x200) sample_size = avio_rb32(pb);
2080 if (flags & 0x400) sample_flags = avio_rb32(pb);
2081 sc->ctts_data[sc->ctts_count].count = 1;
2082 sc->ctts_data[sc->ctts_count].duration = (flags & 0x800) ? avio_rb32(pb) : 0;
2084 if ((keyframe = st->codec->codec_type == AVMEDIA_TYPE_AUDIO ||
2085 (flags & 0x004 && !i && !sample_flags) || sample_flags & 0x2000000))
2087 av_add_index_entry(st, offset, dts, sample_size, distance,
2088 keyframe ? AVINDEX_KEYFRAME : 0);
2089 av_dlog(c->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
2090 "size %d, distance %d, keyframe %d\n", st->index, sc->sample_count+i,
2091 offset, dts, sample_size, distance, keyframe);
2093 dts += sample_duration;
2094 offset += sample_size;
2096 frag->moof_offset = offset;
2097 st->duration = dts + sc->time_offset;
2101 /* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
2102 /* like the files created with Adobe Premiere 5.0, for samples see */
2103 /* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
2104 static int mov_read_wide(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2109 return 0; /* continue */
2110 if (avio_rb32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
2111 avio_skip(pb, atom.size - 4);
2114 atom.type = avio_rl32(pb);
2116 if (atom.type != MKTAG('m','d','a','t')) {
2117 avio_skip(pb, atom.size);
2120 err = mov_read_mdat(c, pb, atom);
2124 static int mov_read_cmov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2129 uint8_t *moov_data; /* uncompressed data */
2130 long cmov_len, moov_len;
2133 avio_rb32(pb); /* dcom atom */
2134 if (avio_rl32(pb) != MKTAG('d','c','o','m'))
2136 if (avio_rl32(pb) != MKTAG('z','l','i','b')) {
2137 av_log(c->fc, AV_LOG_ERROR, "unknown compression for cmov atom !");
2140 avio_rb32(pb); /* cmvd atom */
2141 if (avio_rl32(pb) != MKTAG('c','m','v','d'))
2143 moov_len = avio_rb32(pb); /* uncompressed size */
2144 cmov_len = atom.size - 6 * 4;
2146 cmov_data = av_malloc(cmov_len);
2148 return AVERROR(ENOMEM);
2149 moov_data = av_malloc(moov_len);
2152 return AVERROR(ENOMEM);
2154 avio_read(pb, cmov_data, cmov_len);
2155 if(uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
2156 goto free_and_return;
2157 if(ffio_init_context(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
2158 goto free_and_return;
2159 atom.type = MKTAG('m','o','o','v');
2160 atom.size = moov_len;
2161 ret = mov_read_default(c, &ctx, atom);
2167 av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
2172 /* edit list atom */
2173 static int mov_read_elst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2175 MOVStreamContext *sc;
2176 int i, edit_count, version;
2178 if (c->fc->nb_streams < 1)
2180 sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
2182 version = avio_r8(pb); /* version */
2183 avio_rb24(pb); /* flags */
2184 edit_count = avio_rb32(pb); /* entries */
2186 if((uint64_t)edit_count*12+8 > atom.size)
2189 for(i=0; i<edit_count; i++){
2193 duration = avio_rb64(pb);
2194 time = avio_rb64(pb);
2196 duration = avio_rb32(pb); /* segment duration */
2197 time = (int32_t)avio_rb32(pb); /* media time */
2199 avio_rb32(pb); /* Media rate */
2200 if (i == 0 && time >= -1) {
2201 sc->time_offset = time != -1 ? time : -duration;
2206 av_log(c->fc, AV_LOG_WARNING, "multiple edit list entries, "
2207 "a/v desync might occur, patch welcome\n");
2209 av_dlog(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, edit_count);
2213 static const MOVParseTableEntry mov_default_parse_table[] = {
2214 { MKTAG('a','v','s','s'), mov_read_extradata },
2215 { MKTAG('c','h','p','l'), mov_read_chpl },
2216 { MKTAG('c','o','6','4'), mov_read_stco },
2217 { MKTAG('c','t','t','s'), mov_read_ctts }, /* composition time to sample */
2218 { MKTAG('d','i','n','f'), mov_read_default },
2219 { MKTAG('d','r','e','f'), mov_read_dref },
2220 { MKTAG('e','d','t','s'), mov_read_default },
2221 { MKTAG('e','l','s','t'), mov_read_elst },
2222 { MKTAG('e','n','d','a'), mov_read_enda },
2223 { MKTAG('f','i','e','l'), mov_read_extradata },
2224 { MKTAG('f','t','y','p'), mov_read_ftyp },
2225 { MKTAG('g','l','b','l'), mov_read_glbl },
2226 { MKTAG('h','d','l','r'), mov_read_hdlr },
2227 { MKTAG('i','l','s','t'), mov_read_ilst },
2228 { MKTAG('j','p','2','h'), mov_read_extradata },
2229 { MKTAG('m','d','a','t'), mov_read_mdat },
2230 { MKTAG('m','d','h','d'), mov_read_mdhd },
2231 { MKTAG('m','d','i','a'), mov_read_default },
2232 { MKTAG('m','e','t','a'), mov_read_meta },
2233 { MKTAG('m','i','n','f'), mov_read_default },
2234 { MKTAG('m','o','o','f'), mov_read_moof },
2235 { MKTAG('m','o','o','v'), mov_read_moov },
2236 { MKTAG('m','v','e','x'), mov_read_default },
2237 { MKTAG('m','v','h','d'), mov_read_mvhd },
2238 { MKTAG('S','M','I',' '), mov_read_smi }, /* Sorenson extension ??? */
2239 { MKTAG('a','l','a','c'), mov_read_extradata }, /* alac specific atom */
2240 { MKTAG('a','v','c','C'), mov_read_glbl },
2241 { MKTAG('p','a','s','p'), mov_read_pasp },
2242 { MKTAG('s','t','b','l'), mov_read_default },
2243 { MKTAG('s','t','c','o'), mov_read_stco },
2244 { MKTAG('s','t','p','s'), mov_read_stps },
2245 { MKTAG('s','t','r','f'), mov_read_strf },
2246 { MKTAG('s','t','s','c'), mov_read_stsc },
2247 { MKTAG('s','t','s','d'), mov_read_stsd }, /* sample description */
2248 { MKTAG('s','t','s','s'), mov_read_stss }, /* sync sample */
2249 { MKTAG('s','t','s','z'), mov_read_stsz }, /* sample size */
2250 { MKTAG('s','t','t','s'), mov_read_stts },
2251 { MKTAG('s','t','z','2'), mov_read_stsz }, /* compact sample size */
2252 { MKTAG('t','k','h','d'), mov_read_tkhd }, /* track header */
2253 { MKTAG('t','f','h','d'), mov_read_tfhd }, /* track fragment header */
2254 { MKTAG('t','r','a','k'), mov_read_trak },
2255 { MKTAG('t','r','a','f'), mov_read_default },
2256 { MKTAG('t','r','e','f'), mov_read_default },
2257 { MKTAG('c','h','a','p'), mov_read_chap },
2258 { MKTAG('t','r','e','x'), mov_read_trex },
2259 { MKTAG('t','r','u','n'), mov_read_trun },
2260 { MKTAG('u','d','t','a'), mov_read_default },
2261 { MKTAG('w','a','v','e'), mov_read_wave },
2262 { MKTAG('e','s','d','s'), mov_read_esds },
2263 { MKTAG('d','a','c','3'), mov_read_dac3 }, /* AC-3 info */
2264 { MKTAG('w','i','d','e'), mov_read_wide }, /* place holder */
2265 { MKTAG('w','f','e','x'), mov_read_wfex },
2266 { MKTAG('c','m','o','v'), mov_read_cmov },
2270 static int mov_probe(AVProbeData *p)
2272 unsigned int offset;
2276 /* check file header */
2279 /* ignore invalid offset */
2280 if ((offset + 8) > (unsigned int)p->buf_size)
2282 tag = AV_RL32(p->buf + offset + 4);
2284 /* check for obvious tags */
2285 case MKTAG('j','P',' ',' '): /* jpeg 2000 signature */
2286 case MKTAG('m','o','o','v'):
2287 case MKTAG('m','d','a','t'):
2288 case MKTAG('p','n','o','t'): /* detect movs with preview pics like ew.mov and april.mov */
2289 case MKTAG('u','d','t','a'): /* Packet Video PVAuthor adds this and a lot of more junk */
2290 case MKTAG('f','t','y','p'):
2291 return AVPROBE_SCORE_MAX;
2292 /* those are more common words, so rate then a bit less */
2293 case MKTAG('e','d','i','w'): /* xdcam files have reverted first tags */
2294 case MKTAG('w','i','d','e'):
2295 case MKTAG('f','r','e','e'):
2296 case MKTAG('j','u','n','k'):
2297 case MKTAG('p','i','c','t'):
2298 return AVPROBE_SCORE_MAX - 5;
2299 case MKTAG(0x82,0x82,0x7f,0x7d):
2300 case MKTAG('s','k','i','p'):
2301 case MKTAG('u','u','i','d'):
2302 case MKTAG('p','r','f','l'):
2303 offset = AV_RB32(p->buf+offset) + offset;
2304 /* if we only find those cause probedata is too small at least rate them */
2305 score = AVPROBE_SCORE_MAX - 50;
2308 /* unrecognized tag */
2314 // must be done after parsing all trak because there's no order requirement
2315 static void mov_read_chapters(AVFormatContext *s)
2317 MOVContext *mov = s->priv_data;
2318 AVStream *st = NULL;
2319 MOVStreamContext *sc;
2323 for (i = 0; i < s->nb_streams; i++)
2324 if (s->streams[i]->id == mov->chapter_track) {
2329 av_log(s, AV_LOG_ERROR, "Referenced QT chapter track not found\n");
2333 st->discard = AVDISCARD_ALL;
2335 cur_pos = avio_tell(sc->pb);
2337 for (i = 0; i < st->nb_index_entries; i++) {
2338 AVIndexEntry *sample = &st->index_entries[i];
2339 int64_t end = i+1 < st->nb_index_entries ? st->index_entries[i+1].timestamp : st->duration;
2344 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
2345 av_log(s, AV_LOG_ERROR, "Chapter %d not found in file\n", i);
2349 // the first two bytes are the length of the title
2350 len = avio_rb16(sc->pb);
2351 if (len > sample->size-2)
2353 title_len = 2*len + 1;
2354 if (!(title = av_mallocz(title_len)))
2357 // The samples could theoretically be in any encoding if there's an encd
2358 // atom following, but in practice are only utf-8 or utf-16, distinguished
2359 // instead by the presence of a BOM
2360 ch = avio_rb16(sc->pb);
2362 avio_get_str16be(sc->pb, len, title, title_len);
2363 else if (ch == 0xfffe)
2364 avio_get_str16le(sc->pb, len, title, title_len);
2367 avio_get_str(sc->pb, len - 2, title + 2, title_len - 2);
2370 ff_new_chapter(s, i, st->time_base, sample->timestamp, end, title);
2374 avio_seek(sc->pb, cur_pos, SEEK_SET);
2377 static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
2379 MOVContext *mov = s->priv_data;
2380 AVIOContext *pb = s->pb;
2382 MOVAtom atom = { AV_RL32("root") };
2385 /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
2387 atom.size = avio_size(pb);
2389 atom.size = INT64_MAX;
2391 /* check MOV header */
2392 if ((err = mov_read_default(mov, pb, atom)) < 0) {
2393 av_log(s, AV_LOG_ERROR, "error reading header: %d\n", err);
2396 if (!mov->found_moov) {
2397 av_log(s, AV_LOG_ERROR, "moov atom not found\n");
2400 av_dlog(mov->fc, "on_parse_exit_offset=%"PRId64"\n", avio_tell(pb));
2402 if (pb->seekable && mov->chapter_track > 0)
2403 mov_read_chapters(s);
2408 static AVIndexEntry *mov_find_next_sample(AVFormatContext *s, AVStream **st)
2410 AVIndexEntry *sample = NULL;
2411 int64_t best_dts = INT64_MAX;
2413 for (i = 0; i < s->nb_streams; i++) {
2414 AVStream *avst = s->streams[i];
2415 MOVStreamContext *msc = avst->priv_data;
2416 if (msc->pb && msc->current_sample < avst->nb_index_entries) {
2417 AVIndexEntry *current_sample = &avst->index_entries[msc->current_sample];
2418 int64_t dts = av_rescale(current_sample->timestamp, AV_TIME_BASE, msc->time_scale);
2419 av_dlog(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
2420 if (!sample || (!s->pb->seekable && current_sample->pos < sample->pos) ||
2422 ((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb &&
2423 ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
2424 (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) {
2425 sample = current_sample;
2434 static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
2436 MOVContext *mov = s->priv_data;
2437 MOVStreamContext *sc;
2438 AVIndexEntry *sample;
2439 AVStream *st = NULL;
2442 sample = mov_find_next_sample(s, &st);
2444 mov->found_mdat = 0;
2445 if (s->pb->seekable||
2446 mov_read_default(mov, s->pb, (MOVAtom){ AV_RL32("root"), INT64_MAX }) < 0 ||
2449 av_dlog(s, "read fragments, offset 0x%"PRIx64"\n", avio_tell(s->pb));
2453 /* must be done just before reading, to avoid infinite loop on sample */
2454 sc->current_sample++;
2456 if (st->discard != AVDISCARD_ALL) {
2457 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
2458 av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
2459 sc->ffindex, sample->pos);
2462 ret = av_get_packet(sc->pb, pkt, sample->size);
2465 if (sc->has_palette) {
2468 pal = av_packet_new_side_data(pkt, AV_PKT_DATA_PALETTE, AVPALETTE_SIZE);
2470 av_log(mov->fc, AV_LOG_ERROR, "Cannot append palette to packet\n");
2472 memcpy(pal, sc->palette, AVPALETTE_SIZE);
2473 sc->has_palette = 0;
2476 #if CONFIG_DV_DEMUXER
2477 if (mov->dv_demux && sc->dv_audio_container) {
2478 dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size);
2481 ret = dv_get_packet(mov->dv_demux, pkt);
2488 pkt->stream_index = sc->ffindex;
2489 pkt->dts = sample->timestamp;
2490 if (sc->ctts_data) {
2491 pkt->pts = pkt->dts + sc->dts_shift + sc->ctts_data[sc->ctts_index].duration;
2492 /* update ctts context */
2494 if (sc->ctts_index < sc->ctts_count &&
2495 sc->ctts_data[sc->ctts_index].count == sc->ctts_sample) {
2497 sc->ctts_sample = 0;
2500 pkt->dts = AV_NOPTS_VALUE;
2502 int64_t next_dts = (sc->current_sample < st->nb_index_entries) ?
2503 st->index_entries[sc->current_sample].timestamp : st->duration;
2504 pkt->duration = next_dts - pkt->dts;
2505 pkt->pts = pkt->dts;
2507 if (st->discard == AVDISCARD_ALL)
2509 pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? AV_PKT_FLAG_KEY : 0;
2510 pkt->pos = sample->pos;
2511 av_dlog(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n",
2512 pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
2516 static int mov_seek_stream(AVFormatContext *s, AVStream *st, int64_t timestamp, int flags)
2518 MOVStreamContext *sc = st->priv_data;
2519 int sample, time_sample;
2522 sample = av_index_search_timestamp(st, timestamp, flags);
2523 av_dlog(s, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
2524 if (sample < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
2526 if (sample < 0) /* not sure what to do */
2528 sc->current_sample = sample;
2529 av_dlog(s, "stream %d, found sample %d\n", st->index, sc->current_sample);
2530 /* adjust ctts index */
2531 if (sc->ctts_data) {
2533 for (i = 0; i < sc->ctts_count; i++) {
2534 int next = time_sample + sc->ctts_data[i].count;
2535 if (next > sc->current_sample) {
2537 sc->ctts_sample = sc->current_sample - time_sample;
2546 static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
2549 int64_t seek_timestamp, timestamp;
2553 if (stream_index >= s->nb_streams)
2555 if (sample_time < 0)
2558 st = s->streams[stream_index];
2559 sample = mov_seek_stream(s, st, sample_time, flags);
2563 /* adjust seek timestamp to found sample timestamp */
2564 seek_timestamp = st->index_entries[sample].timestamp;
2566 for (i = 0; i < s->nb_streams; i++) {
2568 if (stream_index == i)
2571 timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
2572 mov_seek_stream(s, st, timestamp, flags);
2577 static int mov_read_close(AVFormatContext *s)
2579 MOVContext *mov = s->priv_data;
2582 for (i = 0; i < s->nb_streams; i++) {
2583 AVStream *st = s->streams[i];
2584 MOVStreamContext *sc = st->priv_data;
2586 av_freep(&sc->ctts_data);
2587 for (j = 0; j < sc->drefs_count; j++) {
2588 av_freep(&sc->drefs[j].path);
2589 av_freep(&sc->drefs[j].dir);
2591 av_freep(&sc->drefs);
2592 if (sc->pb && sc->pb != s->pb)
2595 av_freep(&st->codec->palctrl);
2598 if (mov->dv_demux) {
2599 for(i = 0; i < mov->dv_fctx->nb_streams; i++) {
2600 av_freep(&mov->dv_fctx->streams[i]->codec);
2601 av_freep(&mov->dv_fctx->streams[i]);
2603 av_freep(&mov->dv_fctx);
2604 av_freep(&mov->dv_demux);
2607 av_freep(&mov->trex_data);
2612 AVInputFormat ff_mov_demuxer = {
2613 .name = "mov,mp4,m4a,3gp,3g2,mj2",
2614 .long_name = NULL_IF_CONFIG_SMALL("QuickTime/MPEG-4/Motion JPEG 2000 format"),
2615 .priv_data_size = sizeof(MOVContext),
2616 .read_probe = mov_probe,
2617 .read_header = mov_read_header,
2618 .read_packet = mov_read_packet,
2619 .read_close = mov_read_close,
2620 .read_seek = mov_read_seek,