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"
45 * First version by Francois Revol revol@free.fr
46 * Seek function by Gael Chardon gael.dev@4now.net
48 * Features and limitations:
49 * - reads most of the QT files I have (at least the structure),
50 * Sample QuickTime files with mp3 audio can be found at: http://www.3ivx.com/showcase.html
51 * - the code is quite ugly... maybe I won't do it recursive next time :-)
53 * Funny I didn't know about http://sourceforge.net/projects/qt-ffmpeg/
54 * when coding this :) (it's a writer anyway)
56 * Reference documents:
57 * http://www.geocities.com/xhelmboyx/quicktime/formats/qtm-layout.txt
59 * http://developer.apple.com/documentation/QuickTime/QTFF/
60 * http://developer.apple.com/documentation/QuickTime/QTFF/qtff.pdf
61 * QuickTime is a trademark of Apple (AFAIK :))
64 #include "qtpalette.h"
70 /* XXX: it's the first time I make a recursive parser I think... sorry if it's ugly :P */
72 /* those functions parse an atom */
74 0: continue to parse next atom
75 <0: error occurred, exit
77 /* links atom IDs to parse functions */
78 typedef struct MOVParseTableEntry {
80 int (*parse)(MOVContext *ctx, AVIOContext *pb, MOVAtom atom);
83 static const MOVParseTableEntry mov_default_parse_table[];
85 static int mov_metadata_track_or_disc_number(MOVContext *c, AVIOContext *pb,
86 unsigned len, const char *key)
91 avio_rb16(pb); // unknown
92 current = avio_rb16(pb);
93 total = avio_rb16(pb);
95 snprintf(buf, sizeof(buf), "%d", current);
97 snprintf(buf, sizeof(buf), "%d/%d", current, total);
98 av_dict_set(&c->fc->metadata, key, buf, 0);
103 static int mov_metadata_int8_bypass_padding(MOVContext *c, AVIOContext *pb,
104 unsigned len, const char *key)
108 /* bypass padding bytes */
113 snprintf(buf, sizeof(buf), "%hu", avio_r8(pb));
114 av_dict_set(&c->fc->metadata, key, buf, 0);
119 static int mov_metadata_stik(MOVContext *c, AVIOContext *pb,
120 unsigned len, const char *key)
124 snprintf(buf, sizeof(buf), "%hu", avio_r8(pb));
125 av_dict_set(&c->fc->metadata, key, buf, 0);
130 static int mov_metadata_gnre(MOVContext *c, AVIOContext *pb,
131 unsigned len, const char *key)
136 avio_r8(pb); // unknown
139 if (genre < 1 || genre > ID3v1_GENRE_MAX)
141 snprintf(buf, sizeof(buf), "%s", ff_id3v1_genre_str[genre-1]);
142 av_dict_set(&c->fc->metadata, key, buf, 0);
147 static const uint32_t mac_to_unicode[128] = {
148 0x00C4,0x00C5,0x00C7,0x00C9,0x00D1,0x00D6,0x00DC,0x00E1,
149 0x00E0,0x00E2,0x00E4,0x00E3,0x00E5,0x00E7,0x00E9,0x00E8,
150 0x00EA,0x00EB,0x00ED,0x00EC,0x00EE,0x00EF,0x00F1,0x00F3,
151 0x00F2,0x00F4,0x00F6,0x00F5,0x00FA,0x00F9,0x00FB,0x00FC,
152 0x2020,0x00B0,0x00A2,0x00A3,0x00A7,0x2022,0x00B6,0x00DF,
153 0x00AE,0x00A9,0x2122,0x00B4,0x00A8,0x2260,0x00C6,0x00D8,
154 0x221E,0x00B1,0x2264,0x2265,0x00A5,0x00B5,0x2202,0x2211,
155 0x220F,0x03C0,0x222B,0x00AA,0x00BA,0x03A9,0x00E6,0x00F8,
156 0x00BF,0x00A1,0x00AC,0x221A,0x0192,0x2248,0x2206,0x00AB,
157 0x00BB,0x2026,0x00A0,0x00C0,0x00C3,0x00D5,0x0152,0x0153,
158 0x2013,0x2014,0x201C,0x201D,0x2018,0x2019,0x00F7,0x25CA,
159 0x00FF,0x0178,0x2044,0x20AC,0x2039,0x203A,0xFB01,0xFB02,
160 0x2021,0x00B7,0x201A,0x201E,0x2030,0x00C2,0x00CA,0x00C1,
161 0x00CB,0x00C8,0x00CD,0x00CE,0x00CF,0x00CC,0x00D3,0x00D4,
162 0xF8FF,0x00D2,0x00DA,0x00DB,0x00D9,0x0131,0x02C6,0x02DC,
163 0x00AF,0x02D8,0x02D9,0x02DA,0x00B8,0x02DD,0x02DB,0x02C7,
166 static int mov_read_mac_string(MOVContext *c, AVIOContext *pb, int len,
167 char *dst, int dstlen)
170 char *end = dst+dstlen-1;
173 for (i = 0; i < len; i++) {
174 uint8_t t, c = avio_r8(pb);
175 if (c < 0x80 && p < end)
178 PUT_UTF8(mac_to_unicode[c-0x80], t, if (p < end) *p++ = t;);
184 static int mov_read_udta_string(MOVContext *c, AVIOContext *pb, MOVAtom atom)
186 #ifdef MOV_EXPORT_ALL_METADATA
189 char str[1024], key2[16], language[4] = {0};
190 const char *key = NULL;
191 uint16_t str_size, langcode = 0;
192 uint32_t data_type = 0;
193 int (*parse)(MOVContext*, AVIOContext*, unsigned, const char*) = NULL;
196 case MKTAG(0xa9,'n','a','m'): key = "title"; break;
197 case MKTAG(0xa9,'a','u','t'):
198 case MKTAG(0xa9,'A','R','T'): key = "artist"; break;
199 case MKTAG( 'a','A','R','T'): key = "album_artist"; break;
200 case MKTAG(0xa9,'w','r','t'): key = "composer"; break;
201 case MKTAG( 'c','p','r','t'):
202 case MKTAG(0xa9,'c','p','y'): key = "copyright"; break;
203 case MKTAG(0xa9,'c','m','t'):
204 case MKTAG(0xa9,'i','n','f'): key = "comment"; break;
205 case MKTAG(0xa9,'a','l','b'): key = "album"; break;
206 case MKTAG(0xa9,'d','a','y'): key = "date"; break;
207 case MKTAG(0xa9,'g','e','n'): key = "genre"; break;
208 case MKTAG( 'g','n','r','e'): key = "genre";
209 parse = mov_metadata_gnre; break;
210 case MKTAG(0xa9,'t','o','o'):
211 case MKTAG(0xa9,'s','w','r'): key = "encoder"; break;
212 case MKTAG(0xa9,'e','n','c'): key = "encoder"; break;
213 case MKTAG( 'd','e','s','c'): key = "description";break;
214 case MKTAG( 'l','d','e','s'): key = "synopsis"; break;
215 case MKTAG( 't','v','s','h'): key = "show"; break;
216 case MKTAG( 't','v','e','n'): key = "episode_id";break;
217 case MKTAG( 't','v','n','n'): key = "network"; break;
218 case MKTAG( 't','r','k','n'): key = "track";
219 parse = mov_metadata_track_or_disc_number; break;
220 case MKTAG( 'd','i','s','k'): key = "disc";
221 parse = mov_metadata_track_or_disc_number; break;
222 case MKTAG( 't','v','e','s'): key = "episode_sort";
223 parse = mov_metadata_int8_bypass_padding; break;
224 case MKTAG( 't','v','s','n'): key = "season_number";
225 parse = mov_metadata_int8_bypass_padding; break;
226 case MKTAG( 's','t','i','k'): key = "media_type";
227 parse = mov_metadata_stik; break;
230 if (c->itunes_metadata && atom.size > 8) {
231 int data_size = avio_rb32(pb);
232 int tag = avio_rl32(pb);
233 if (tag == MKTAG('d','a','t','a')) {
234 data_type = avio_rb32(pb); // type
235 avio_rb32(pb); // unknown
236 str_size = data_size - 16;
239 } else if (atom.size > 4 && key && !c->itunes_metadata) {
240 str_size = avio_rb16(pb); // string length
241 langcode = avio_rb16(pb);
242 ff_mov_lang_to_iso639(langcode, language);
245 str_size = atom.size;
247 #ifdef MOV_EXPORT_ALL_METADATA
249 snprintf(tmp_key, 5, "%.4s", (char*)&atom.type);
259 str_size = FFMIN3(sizeof(str)-1, str_size, atom.size);
262 parse(c, pb, str_size, key);
264 if (data_type == 3 || (data_type == 0 && langcode < 0x800)) { // MAC Encoded
265 mov_read_mac_string(c, pb, str_size, str, sizeof(str));
267 avio_read(pb, str, str_size);
270 av_dict_set(&c->fc->metadata, key, str, 0);
271 if (*language && strcmp(language, "und")) {
272 snprintf(key2, sizeof(key2), "%s-%s", key, language);
273 av_dict_set(&c->fc->metadata, key2, str, 0);
276 av_dlog(c->fc, "lang \"%3s\" ", language);
277 av_dlog(c->fc, "tag \"%s\" value \"%s\" atom \"%.4s\" %d %"PRId64"\n",
278 key, str, (char*)&atom.type, str_size, atom.size);
283 static int mov_read_chpl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
286 int i, nb_chapters, str_len, version;
289 if ((atom.size -= 5) < 0)
292 version = avio_r8(pb);
295 avio_rb32(pb); // ???
296 nb_chapters = avio_r8(pb);
298 for (i = 0; i < nb_chapters; i++) {
302 start = avio_rb64(pb);
303 str_len = avio_r8(pb);
305 if ((atom.size -= 9+str_len) < 0)
308 avio_read(pb, str, str_len);
310 avpriv_new_chapter(c->fc, i, (AVRational){1,10000000}, start, AV_NOPTS_VALUE, str);
315 static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom)
317 int64_t total_size = 0;
322 atom.size = INT64_MAX;
323 while (total_size + 8 < atom.size && !pb->eof_reached) {
324 int (*parse)(MOVContext*, AVIOContext*, MOVAtom) = NULL;
327 if (atom.size >= 8) {
328 a.size = avio_rb32(pb);
329 a.type = avio_rl32(pb);
331 av_dlog(c->fc, "type: %08x '%.4s' parent:'%.4s' sz: %"PRId64" %"PRId64" %"PRId64"\n",
332 a.type, (char*)&a.type, (char*)&atom.type, a.size, total_size, atom.size);
334 if (a.size == 1) { /* 64 bit extended size */
335 a.size = avio_rb64(pb) - 8;
339 a.size = atom.size - total_size;
346 a.size = FFMIN(a.size, atom.size - total_size);
348 for (i = 0; mov_default_parse_table[i].type; i++)
349 if (mov_default_parse_table[i].type == a.type) {
350 parse = mov_default_parse_table[i].parse;
354 // container is user data
355 if (!parse && (atom.type == MKTAG('u','d','t','a') ||
356 atom.type == MKTAG('i','l','s','t')))
357 parse = mov_read_udta_string;
359 if (!parse) { /* skip leaf atoms data */
360 avio_skip(pb, a.size);
362 int64_t start_pos = avio_tell(pb);
364 int err = parse(c, pb, a);
367 if (c->found_moov && c->found_mdat &&
368 (!pb->seekable || start_pos + a.size == avio_size(pb)))
370 left = a.size - avio_tell(pb) + start_pos;
371 if (left > 0) /* skip garbage at atom end */
375 total_size += a.size;
378 if (total_size < atom.size && atom.size < 0x7ffff)
379 avio_skip(pb, atom.size - total_size);
384 static int mov_read_dref(MOVContext *c, AVIOContext *pb, MOVAtom atom)
387 MOVStreamContext *sc;
390 if (c->fc->nb_streams < 1)
392 st = c->fc->streams[c->fc->nb_streams-1];
395 avio_rb32(pb); // version + flags
396 entries = avio_rb32(pb);
397 if (entries >= UINT_MAX / sizeof(*sc->drefs))
399 sc->drefs = av_mallocz(entries * sizeof(*sc->drefs));
401 return AVERROR(ENOMEM);
402 sc->drefs_count = entries;
404 for (i = 0; i < sc->drefs_count; i++) {
405 MOVDref *dref = &sc->drefs[i];
406 uint32_t size = avio_rb32(pb);
407 int64_t next = avio_tell(pb) + size - 4;
412 dref->type = avio_rl32(pb);
413 avio_rb32(pb); // version + flags
414 av_dlog(c->fc, "type %.4s size %d\n", (char*)&dref->type, size);
416 if (dref->type == MKTAG('a','l','i','s') && size > 150) {
417 /* macintosh alias record */
418 uint16_t volume_len, len;
423 volume_len = avio_r8(pb);
424 volume_len = FFMIN(volume_len, 27);
425 avio_read(pb, dref->volume, 27);
426 dref->volume[volume_len] = 0;
427 av_log(c->fc, AV_LOG_DEBUG, "volume %s, len %d\n", dref->volume, volume_len);
432 len = FFMIN(len, 63);
433 avio_read(pb, dref->filename, 63);
434 dref->filename[len] = 0;
435 av_log(c->fc, AV_LOG_DEBUG, "filename %s, len %d\n", dref->filename, len);
439 /* read next level up_from_alias/down_to_target */
440 dref->nlvl_from = avio_rb16(pb);
441 dref->nlvl_to = avio_rb16(pb);
442 av_log(c->fc, AV_LOG_DEBUG, "nlvl from %d, nlvl to %d\n",
443 dref->nlvl_from, dref->nlvl_to);
447 for (type = 0; type != -1 && avio_tell(pb) < next; ) {
448 type = avio_rb16(pb);
450 av_log(c->fc, AV_LOG_DEBUG, "type %d, len %d\n", type, len);
453 if (type == 2) { // absolute path
455 dref->path = av_mallocz(len+1);
457 return AVERROR(ENOMEM);
458 avio_read(pb, dref->path, len);
459 if (len > volume_len && !strncmp(dref->path, dref->volume, volume_len)) {
461 memmove(dref->path, dref->path+volume_len, len);
464 for (j = 0; j < len; j++)
465 if (dref->path[j] == ':')
467 av_log(c->fc, AV_LOG_DEBUG, "path %s\n", dref->path);
468 } else if (type == 0) { // directory name
470 dref->dir = av_malloc(len+1);
472 return AVERROR(ENOMEM);
473 avio_read(pb, dref->dir, len);
475 for (j = 0; j < len; j++)
476 if (dref->dir[j] == ':')
478 av_log(c->fc, AV_LOG_DEBUG, "dir %s\n", dref->dir);
483 avio_seek(pb, next, SEEK_SET);
488 static int mov_read_hdlr(MOVContext *c, AVIOContext *pb, MOVAtom atom)
492 uint32_t av_unused ctype;
494 if (c->fc->nb_streams < 1) // meta before first trak
497 st = c->fc->streams[c->fc->nb_streams-1];
499 avio_r8(pb); /* version */
500 avio_rb24(pb); /* flags */
503 ctype = avio_rl32(pb);
504 type = avio_rl32(pb); /* component subtype */
506 av_dlog(c->fc, "ctype= %.4s (0x%08x)\n", (char*)&ctype, ctype);
507 av_dlog(c->fc, "stype= %.4s\n", (char*)&type);
509 if (type == MKTAG('v','i','d','e'))
510 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
511 else if (type == MKTAG('s','o','u','n'))
512 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
513 else if (type == MKTAG('m','1','a',' '))
514 st->codec->codec_id = CODEC_ID_MP2;
515 else if ((type == MKTAG('s','u','b','p')) || (type == MKTAG('c','l','c','p')))
516 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
518 avio_rb32(pb); /* component manufacture */
519 avio_rb32(pb); /* component flags */
520 avio_rb32(pb); /* component flags mask */
525 int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb, MOVAtom atom)
530 if (fc->nb_streams < 1)
532 st = fc->streams[fc->nb_streams-1];
534 avio_rb32(pb); /* version + flags */
535 ff_mp4_read_descr(fc, pb, &tag);
536 if (tag == MP4ESDescrTag) {
537 ff_mp4_parse_es_descr(pb, NULL);
539 avio_rb16(pb); /* ID */
541 ff_mp4_read_descr(fc, pb, &tag);
542 if (tag == MP4DecConfigDescrTag)
543 ff_mp4_read_dec_config_descr(fc, st, pb);
547 static int mov_read_esds(MOVContext *c, AVIOContext *pb, MOVAtom atom)
549 return ff_mov_read_esds(c->fc, pb, atom);
552 static int mov_read_dac3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
555 int ac3info, acmod, lfeon, bsmod;
557 if (c->fc->nb_streams < 1)
559 st = c->fc->streams[c->fc->nb_streams-1];
561 ac3info = avio_rb24(pb);
562 bsmod = (ac3info >> 14) & 0x7;
563 acmod = (ac3info >> 11) & 0x7;
564 lfeon = (ac3info >> 10) & 0x1;
565 st->codec->channels = ((int[]){2,1,2,3,3,4,4,5})[acmod] + lfeon;
566 st->codec->audio_service_type = bsmod;
567 if (st->codec->channels > 1 && bsmod == 0x7)
568 st->codec->audio_service_type = AV_AUDIO_SERVICE_TYPE_KARAOKE;
573 static int mov_read_wfex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
577 if (c->fc->nb_streams < 1)
579 st = c->fc->streams[c->fc->nb_streams-1];
581 ff_get_wav_header(pb, st->codec, atom.size);
586 static int mov_read_pasp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
588 const int num = avio_rb32(pb);
589 const int den = avio_rb32(pb);
592 if (c->fc->nb_streams < 1)
594 st = c->fc->streams[c->fc->nb_streams-1];
596 if ((st->sample_aspect_ratio.den != 1 || st->sample_aspect_ratio.num) && // default
597 (den != st->sample_aspect_ratio.den || num != st->sample_aspect_ratio.num)) {
598 av_log(c->fc, AV_LOG_WARNING,
599 "sample aspect ratio already set to %d:%d, ignoring 'pasp' atom (%d:%d)\n",
600 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
602 } else if (den != 0) {
603 st->sample_aspect_ratio.num = num;
604 st->sample_aspect_ratio.den = den;
609 /* this atom contains actual media data */
610 static int mov_read_mdat(MOVContext *c, AVIOContext *pb, MOVAtom atom)
612 if (atom.size == 0) /* wrong one (MP4) */
615 return 0; /* now go for moov */
618 /* read major brand, minor version and compatible brands and store them as metadata */
619 static int mov_read_ftyp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
623 char minor_ver_str[11]; /* 32 bit integer -> 10 digits + null */
624 char* comp_brands_str;
625 uint8_t type[5] = {0};
627 avio_read(pb, type, 4);
628 if (strcmp(type, "qt "))
630 av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
631 av_dict_set(&c->fc->metadata, "major_brand", type, 0);
632 minor_ver = avio_rb32(pb); /* minor version */
633 snprintf(minor_ver_str, sizeof(minor_ver_str), "%d", minor_ver);
634 av_dict_set(&c->fc->metadata, "minor_version", minor_ver_str, 0);
636 comp_brand_size = atom.size - 8;
637 if (comp_brand_size < 0)
639 comp_brands_str = av_malloc(comp_brand_size + 1); /* Add null terminator */
640 if (!comp_brands_str)
641 return AVERROR(ENOMEM);
642 avio_read(pb, comp_brands_str, comp_brand_size);
643 comp_brands_str[comp_brand_size] = 0;
644 av_dict_set(&c->fc->metadata, "compatible_brands", comp_brands_str, 0);
645 av_freep(&comp_brands_str);
650 /* this atom should contain all header atoms */
651 static int mov_read_moov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
653 if (mov_read_default(c, pb, atom) < 0)
655 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
656 /* so we don't parse the whole file if over a network */
658 return 0; /* now go for mdat */
661 static int mov_read_moof(MOVContext *c, AVIOContext *pb, MOVAtom atom)
663 c->fragment.moof_offset = avio_tell(pb) - 8;
664 av_dlog(c->fc, "moof offset %"PRIx64"\n", c->fragment.moof_offset);
665 return mov_read_default(c, pb, atom);
668 static void mov_metadata_creation_time(AVDictionary **metadata, time_t time)
673 time -= 2082844800; /* seconds between 1904-01-01 and Epoch */
676 strftime(buffer, sizeof(buffer), "%Y-%m-%d %H:%M:%S", ptm);
677 av_dict_set(metadata, "creation_time", buffer, 0);
681 static int mov_read_mdhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
684 MOVStreamContext *sc;
686 char language[4] = {0};
688 time_t creation_time;
690 if (c->fc->nb_streams < 1)
692 st = c->fc->streams[c->fc->nb_streams-1];
695 version = avio_r8(pb);
697 return -1; /* unsupported */
699 avio_rb24(pb); /* flags */
701 creation_time = avio_rb64(pb);
704 creation_time = avio_rb32(pb);
705 avio_rb32(pb); /* modification time */
707 mov_metadata_creation_time(&st->metadata, creation_time);
709 sc->time_scale = avio_rb32(pb);
710 st->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
712 lang = avio_rb16(pb); /* language */
713 if (ff_mov_lang_to_iso639(lang, language))
714 av_dict_set(&st->metadata, "language", language, 0);
715 avio_rb16(pb); /* quality */
720 static int mov_read_mvhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
722 time_t creation_time;
723 int version = avio_r8(pb); /* version */
724 avio_rb24(pb); /* flags */
727 creation_time = avio_rb64(pb);
730 creation_time = avio_rb32(pb);
731 avio_rb32(pb); /* modification time */
733 mov_metadata_creation_time(&c->fc->metadata, creation_time);
734 c->time_scale = avio_rb32(pb); /* time scale */
736 av_dlog(c->fc, "time scale = %i\n", c->time_scale);
738 c->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
739 avio_rb32(pb); /* preferred scale */
741 avio_rb16(pb); /* preferred volume */
743 avio_skip(pb, 10); /* reserved */
745 avio_skip(pb, 36); /* display matrix */
747 avio_rb32(pb); /* preview time */
748 avio_rb32(pb); /* preview duration */
749 avio_rb32(pb); /* poster time */
750 avio_rb32(pb); /* selection time */
751 avio_rb32(pb); /* selection duration */
752 avio_rb32(pb); /* current time */
753 avio_rb32(pb); /* next track ID */
758 static int mov_read_smi(MOVContext *c, AVIOContext *pb, MOVAtom atom)
762 if (c->fc->nb_streams < 1)
764 st = c->fc->streams[c->fc->nb_streams-1];
766 if ((uint64_t)atom.size > (1<<30))
769 // currently SVQ3 decoder expect full STSD header - so let's fake it
770 // this should be fixed and just SMI header should be passed
771 av_free(st->codec->extradata);
772 st->codec->extradata = av_mallocz(atom.size + 0x5a + FF_INPUT_BUFFER_PADDING_SIZE);
773 if (!st->codec->extradata)
774 return AVERROR(ENOMEM);
775 st->codec->extradata_size = 0x5a + atom.size;
776 memcpy(st->codec->extradata, "SVQ3", 4); // fake
777 avio_read(pb, st->codec->extradata + 0x5a, atom.size);
778 av_dlog(c->fc, "Reading SMI %"PRId64" %s\n", atom.size, st->codec->extradata + 0x5a);
782 static int mov_read_enda(MOVContext *c, AVIOContext *pb, MOVAtom atom)
787 if (c->fc->nb_streams < 1)
789 st = c->fc->streams[c->fc->nb_streams-1];
791 little_endian = avio_rb16(pb);
792 av_dlog(c->fc, "enda %d\n", little_endian);
793 if (little_endian == 1) {
794 switch (st->codec->codec_id) {
795 case CODEC_ID_PCM_S24BE:
796 st->codec->codec_id = CODEC_ID_PCM_S24LE;
798 case CODEC_ID_PCM_S32BE:
799 st->codec->codec_id = CODEC_ID_PCM_S32LE;
801 case CODEC_ID_PCM_F32BE:
802 st->codec->codec_id = CODEC_ID_PCM_F32LE;
804 case CODEC_ID_PCM_F64BE:
805 st->codec->codec_id = CODEC_ID_PCM_F64LE;
814 /* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
815 static int mov_read_extradata(MOVContext *c, AVIOContext *pb, MOVAtom atom)
821 if (c->fc->nb_streams < 1) // will happen with jp2 files
823 st= c->fc->streams[c->fc->nb_streams-1];
824 size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
825 if (size > INT_MAX || (uint64_t)atom.size > INT_MAX)
827 buf= av_realloc(st->codec->extradata, size);
830 st->codec->extradata= buf;
831 buf+= st->codec->extradata_size;
832 st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE;
833 AV_WB32( buf , atom.size + 8);
834 AV_WL32( buf + 4, atom.type);
835 avio_read(pb, buf + 8, atom.size);
839 static int mov_read_wave(MOVContext *c, AVIOContext *pb, MOVAtom atom)
843 if (c->fc->nb_streams < 1)
845 st = c->fc->streams[c->fc->nb_streams-1];
847 if ((uint64_t)atom.size > (1<<30))
850 if (st->codec->codec_id == CODEC_ID_QDM2 || st->codec->codec_id == CODEC_ID_QDMC) {
851 // pass all frma atom to codec, needed at least for QDMC and QDM2
852 av_free(st->codec->extradata);
853 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
854 if (!st->codec->extradata)
855 return AVERROR(ENOMEM);
856 st->codec->extradata_size = atom.size;
857 avio_read(pb, st->codec->extradata, atom.size);
858 } else if (atom.size > 8) { /* to read frma, esds atoms */
859 if (mov_read_default(c, pb, atom) < 0)
862 avio_skip(pb, atom.size);
867 * This function reads atom content and puts data in extradata without tag
868 * nor size unlike mov_read_extradata.
870 static int mov_read_glbl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
874 if (c->fc->nb_streams < 1)
876 st = c->fc->streams[c->fc->nb_streams-1];
878 if ((uint64_t)atom.size > (1<<30))
881 av_free(st->codec->extradata);
882 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
883 if (!st->codec->extradata)
884 return AVERROR(ENOMEM);
885 st->codec->extradata_size = atom.size;
886 avio_read(pb, st->codec->extradata, atom.size);
891 * An strf atom is a BITMAPINFOHEADER struct. This struct is 40 bytes itself,
892 * but can have extradata appended at the end after the 40 bytes belonging
895 static int mov_read_strf(MOVContext *c, AVIOContext *pb, MOVAtom atom)
899 if (c->fc->nb_streams < 1)
903 st = c->fc->streams[c->fc->nb_streams-1];
905 if ((uint64_t)atom.size > (1<<30))
908 av_free(st->codec->extradata);
909 st->codec->extradata = av_mallocz(atom.size - 40 + FF_INPUT_BUFFER_PADDING_SIZE);
910 if (!st->codec->extradata)
911 return AVERROR(ENOMEM);
912 st->codec->extradata_size = atom.size - 40;
914 avio_read(pb, st->codec->extradata, atom.size - 40);
918 static int mov_read_stco(MOVContext *c, AVIOContext *pb, MOVAtom atom)
921 MOVStreamContext *sc;
922 unsigned int i, entries;
924 if (c->fc->nb_streams < 1)
926 st = c->fc->streams[c->fc->nb_streams-1];
929 avio_r8(pb); /* version */
930 avio_rb24(pb); /* flags */
932 entries = avio_rb32(pb);
934 if (entries >= UINT_MAX/sizeof(int64_t))
937 sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
938 if (!sc->chunk_offsets)
939 return AVERROR(ENOMEM);
940 sc->chunk_count = entries;
942 if (atom.type == MKTAG('s','t','c','o'))
943 for (i=0; i<entries; i++)
944 sc->chunk_offsets[i] = avio_rb32(pb);
945 else if (atom.type == MKTAG('c','o','6','4'))
946 for (i=0; i<entries; i++)
947 sc->chunk_offsets[i] = avio_rb64(pb);
955 * Compute codec id for 'lpcm' tag.
956 * See CoreAudioTypes and AudioStreamBasicDescription at Apple.
958 enum CodecID ff_mov_get_lpcm_codec_id(int bps, int flags)
960 if (flags & 1) { // floating point
961 if (flags & 2) { // big endian
962 if (bps == 32) return CODEC_ID_PCM_F32BE;
963 else if (bps == 64) return CODEC_ID_PCM_F64BE;
965 if (bps == 32) return CODEC_ID_PCM_F32LE;
966 else if (bps == 64) return CODEC_ID_PCM_F64LE;
972 if (flags & 4) return CODEC_ID_PCM_S8;
973 else return CODEC_ID_PCM_U8;
974 else if (bps == 16) return CODEC_ID_PCM_S16BE;
975 else if (bps == 24) return CODEC_ID_PCM_S24BE;
976 else if (bps == 32) return CODEC_ID_PCM_S32BE;
979 if (flags & 4) return CODEC_ID_PCM_S8;
980 else return CODEC_ID_PCM_U8;
981 else if (bps == 16) return CODEC_ID_PCM_S16LE;
982 else if (bps == 24) return CODEC_ID_PCM_S24LE;
983 else if (bps == 32) return CODEC_ID_PCM_S32LE;
986 return CODEC_ID_NONE;
989 int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries)
992 MOVStreamContext *sc;
993 int j, pseudo_stream_id;
995 if (c->fc->nb_streams < 1)
997 st = c->fc->streams[c->fc->nb_streams-1];
1000 for (pseudo_stream_id=0; pseudo_stream_id<entries; pseudo_stream_id++) {
1001 //Parsing Sample description table
1004 MOVAtom a = { AV_RL32("stsd") };
1005 int64_t start_pos = avio_tell(pb);
1006 int size = avio_rb32(pb); /* size */
1007 uint32_t format = avio_rl32(pb); /* data format */
1010 avio_rb32(pb); /* reserved */
1011 avio_rb16(pb); /* reserved */
1012 dref_id = avio_rb16(pb);
1015 if (st->codec->codec_tag &&
1016 st->codec->codec_tag != format &&
1017 (c->fc->video_codec_id ? ff_codec_get_id(codec_movvideo_tags, format) != c->fc->video_codec_id
1018 : st->codec->codec_tag != MKTAG('j','p','e','g'))
1020 /* Multiple fourcc, we skip JPEG. This is not correct, we should
1021 * export it as a separate AVStream but this needs a few changes
1022 * in the MOV demuxer, patch welcome. */
1024 av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n");
1025 avio_skip(pb, size - (avio_tell(pb) - start_pos));
1028 /* we cannot demux concatenated h264 streams because of different extradata */
1029 if (st->codec->codec_tag && st->codec->codec_tag == AV_RL32("avc1"))
1031 sc->pseudo_stream_id = st->codec->codec_tag ? -1 : pseudo_stream_id;
1032 sc->dref_id= dref_id;
1034 st->codec->codec_tag = format;
1035 id = ff_codec_get_id(codec_movaudio_tags, format);
1036 if (id<=0 && ((format&0xFFFF) == 'm'+('s'<<8) || (format&0xFFFF) == 'T'+('S'<<8)))
1037 id = ff_codec_get_id(ff_codec_wav_tags, av_bswap32(format)&0xFFFF);
1039 if (st->codec->codec_type != AVMEDIA_TYPE_VIDEO && id > 0) {
1040 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
1041 } else if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO && /* do not overwrite codec type */
1042 format && format != MKTAG('m','p','4','s')) { /* skip old asf mpeg4 tag */
1043 id = ff_codec_get_id(codec_movvideo_tags, format);
1045 id = ff_codec_get_id(ff_codec_bmp_tags, format);
1047 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
1048 else if (st->codec->codec_type == AVMEDIA_TYPE_DATA){
1049 id = ff_codec_get_id(ff_codec_movsubtitle_tags, format);
1051 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
1055 av_dlog(c->fc, "size=%d 4CC= %c%c%c%c codec_type=%d\n", size,
1056 (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff,
1057 (format >> 24) & 0xff, st->codec->codec_type);
1059 if (st->codec->codec_type==AVMEDIA_TYPE_VIDEO) {
1060 unsigned int color_depth, len;
1061 int color_greyscale;
1063 st->codec->codec_id = id;
1064 avio_rb16(pb); /* version */
1065 avio_rb16(pb); /* revision level */
1066 avio_rb32(pb); /* vendor */
1067 avio_rb32(pb); /* temporal quality */
1068 avio_rb32(pb); /* spatial quality */
1070 st->codec->width = avio_rb16(pb); /* width */
1071 st->codec->height = avio_rb16(pb); /* height */
1073 avio_rb32(pb); /* horiz resolution */
1074 avio_rb32(pb); /* vert resolution */
1075 avio_rb32(pb); /* data size, always 0 */
1076 avio_rb16(pb); /* frames per samples */
1078 len = avio_r8(pb); /* codec name, pascal string */
1081 mov_read_mac_string(c, pb, len, st->codec->codec_name, 32);
1083 avio_skip(pb, 31 - len);
1084 /* codec_tag YV12 triggers an UV swap in rawdec.c */
1085 if (!memcmp(st->codec->codec_name, "Planar Y'CbCr 8-bit 4:2:0", 25))
1086 st->codec->codec_tag=MKTAG('I', '4', '2', '0');
1088 st->codec->bits_per_coded_sample = avio_rb16(pb); /* depth */
1089 st->codec->color_table_id = avio_rb16(pb); /* colortable id */
1090 av_dlog(c->fc, "depth %d, ctab id %d\n",
1091 st->codec->bits_per_coded_sample, st->codec->color_table_id);
1092 /* figure out the palette situation */
1093 color_depth = st->codec->bits_per_coded_sample & 0x1F;
1094 color_greyscale = st->codec->bits_per_coded_sample & 0x20;
1096 /* if the depth is 2, 4, or 8 bpp, file is palettized */
1097 if ((color_depth == 2) || (color_depth == 4) ||
1098 (color_depth == 8)) {
1099 /* for palette traversal */
1100 unsigned int color_start, color_count, color_end;
1101 unsigned char r, g, b;
1103 if (color_greyscale) {
1104 int color_index, color_dec;
1105 /* compute the greyscale palette */
1106 st->codec->bits_per_coded_sample = color_depth;
1107 color_count = 1 << color_depth;
1109 color_dec = 256 / (color_count - 1);
1110 for (j = 0; j < color_count; j++) {
1111 r = g = b = color_index;
1113 (r << 16) | (g << 8) | (b);
1114 color_index -= color_dec;
1115 if (color_index < 0)
1118 } else if (st->codec->color_table_id) {
1119 const uint8_t *color_table;
1120 /* if flag bit 3 is set, use the default palette */
1121 color_count = 1 << color_depth;
1122 if (color_depth == 2)
1123 color_table = ff_qt_default_palette_4;
1124 else if (color_depth == 4)
1125 color_table = ff_qt_default_palette_16;
1127 color_table = ff_qt_default_palette_256;
1129 for (j = 0; j < color_count; j++) {
1130 r = color_table[j * 3 + 0];
1131 g = color_table[j * 3 + 1];
1132 b = color_table[j * 3 + 2];
1134 (r << 16) | (g << 8) | (b);
1137 /* load the palette from the file */
1138 color_start = avio_rb32(pb);
1139 color_count = avio_rb16(pb);
1140 color_end = avio_rb16(pb);
1141 if ((color_start <= 255) &&
1142 (color_end <= 255)) {
1143 for (j = color_start; j <= color_end; j++) {
1144 /* each R, G, or B component is 16 bits;
1145 * only use the top 8 bits; skip alpha bytes
1156 (r << 16) | (g << 8) | (b);
1160 sc->has_palette = 1;
1162 } else if (st->codec->codec_type==AVMEDIA_TYPE_AUDIO) {
1163 int bits_per_sample, flags;
1164 uint16_t version = avio_rb16(pb);
1166 st->codec->codec_id = id;
1167 avio_rb16(pb); /* revision level */
1168 avio_rb32(pb); /* vendor */
1170 st->codec->channels = avio_rb16(pb); /* channel count */
1171 av_dlog(c->fc, "audio channels %d\n", st->codec->channels);
1172 st->codec->bits_per_coded_sample = avio_rb16(pb); /* sample size */
1174 sc->audio_cid = avio_rb16(pb);
1175 avio_rb16(pb); /* packet size = 0 */
1177 st->codec->sample_rate = ((avio_rb32(pb) >> 16));
1179 //Read QT version 1 fields. In version 0 these do not exist.
1180 av_dlog(c->fc, "version =%d, isom =%d\n",version,c->isom);
1183 sc->samples_per_frame = avio_rb32(pb);
1184 avio_rb32(pb); /* bytes per packet */
1185 sc->bytes_per_frame = avio_rb32(pb);
1186 avio_rb32(pb); /* bytes per sample */
1187 } else if (version==2) {
1188 avio_rb32(pb); /* sizeof struct only */
1189 st->codec->sample_rate = av_int2dbl(avio_rb64(pb)); /* float 64 */
1190 st->codec->channels = avio_rb32(pb);
1191 avio_rb32(pb); /* always 0x7F000000 */
1192 st->codec->bits_per_coded_sample = avio_rb32(pb); /* bits per channel if sound is uncompressed */
1193 flags = avio_rb32(pb); /* lpcm format specific flag */
1194 sc->bytes_per_frame = avio_rb32(pb); /* bytes per audio packet if constant */
1195 sc->samples_per_frame = avio_rb32(pb); /* lpcm frames per audio packet if constant */
1196 if (format == MKTAG('l','p','c','m'))
1197 st->codec->codec_id = ff_mov_get_lpcm_codec_id(st->codec->bits_per_coded_sample, flags);
1201 switch (st->codec->codec_id) {
1202 case CODEC_ID_PCM_S8:
1203 case CODEC_ID_PCM_U8:
1204 if (st->codec->bits_per_coded_sample == 16)
1205 st->codec->codec_id = CODEC_ID_PCM_S16BE;
1207 case CODEC_ID_PCM_S16LE:
1208 case CODEC_ID_PCM_S16BE:
1209 if (st->codec->bits_per_coded_sample == 8)
1210 st->codec->codec_id = CODEC_ID_PCM_S8;
1211 else if (st->codec->bits_per_coded_sample == 24)
1212 st->codec->codec_id =
1213 st->codec->codec_id == CODEC_ID_PCM_S16BE ?
1214 CODEC_ID_PCM_S24BE : CODEC_ID_PCM_S24LE;
1216 /* set values for old format before stsd version 1 appeared */
1217 case CODEC_ID_MACE3:
1218 sc->samples_per_frame = 6;
1219 sc->bytes_per_frame = 2*st->codec->channels;
1221 case CODEC_ID_MACE6:
1222 sc->samples_per_frame = 6;
1223 sc->bytes_per_frame = 1*st->codec->channels;
1225 case CODEC_ID_ADPCM_IMA_QT:
1226 sc->samples_per_frame = 64;
1227 sc->bytes_per_frame = 34*st->codec->channels;
1230 sc->samples_per_frame = 160;
1231 sc->bytes_per_frame = 33;
1237 bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
1238 if (bits_per_sample) {
1239 st->codec->bits_per_coded_sample = bits_per_sample;
1240 sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
1242 } else if (st->codec->codec_type==AVMEDIA_TYPE_SUBTITLE){
1243 // ttxt stsd contains display flags, justification, background
1244 // color, fonts, and default styles, so fake an atom to read it
1245 MOVAtom fake_atom = { .size = size - (avio_tell(pb) - start_pos) };
1246 if (format != AV_RL32("mp4s")) // mp4s contains a regular esds atom
1247 mov_read_glbl(c, pb, fake_atom);
1248 st->codec->codec_id= id;
1249 st->codec->width = sc->width;
1250 st->codec->height = sc->height;
1252 /* other codec type, just skip (rtp, mp4s, tmcd ...) */
1253 avio_skip(pb, size - (avio_tell(pb) - start_pos));
1255 /* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */
1256 a.size = size - (avio_tell(pb) - start_pos);
1258 if (mov_read_default(c, pb, a) < 0)
1260 } else if (a.size > 0)
1261 avio_skip(pb, a.size);
1264 if (st->codec->codec_type==AVMEDIA_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1)
1265 st->codec->sample_rate= sc->time_scale;
1267 /* special codec parameters handling */
1268 switch (st->codec->codec_id) {
1269 #if CONFIG_DV_DEMUXER
1270 case CODEC_ID_DVAUDIO:
1271 c->dv_fctx = avformat_alloc_context();
1272 c->dv_demux = avpriv_dv_init_demux(c->dv_fctx);
1274 av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
1277 sc->dv_audio_container = 1;
1278 st->codec->codec_id = CODEC_ID_PCM_S16LE;
1281 /* no ifdef since parameters are always those */
1282 case CODEC_ID_QCELP:
1283 // force sample rate for qcelp when not stored in mov
1284 if (st->codec->codec_tag != MKTAG('Q','c','l','p'))
1285 st->codec->sample_rate = 8000;
1286 st->codec->frame_size= 160;
1287 st->codec->channels= 1; /* really needed */
1289 case CODEC_ID_AMR_NB:
1290 case CODEC_ID_AMR_WB:
1291 st->codec->frame_size= sc->samples_per_frame;
1292 st->codec->channels= 1; /* really needed */
1293 /* force sample rate for amr, stsd in 3gp does not store sample rate */
1294 if (st->codec->codec_id == CODEC_ID_AMR_NB)
1295 st->codec->sample_rate = 8000;
1296 else if (st->codec->codec_id == CODEC_ID_AMR_WB)
1297 st->codec->sample_rate = 16000;
1301 st->codec->codec_type = AVMEDIA_TYPE_AUDIO; /* force type after stsd for m1a hdlr */
1302 st->need_parsing = AVSTREAM_PARSE_FULL;
1305 case CODEC_ID_ADPCM_MS:
1306 case CODEC_ID_ADPCM_IMA_WAV:
1307 st->codec->frame_size = sc->samples_per_frame;
1308 st->codec->block_align = sc->bytes_per_frame;
1311 if (st->codec->extradata_size == 36) {
1312 st->codec->frame_size = AV_RB32(st->codec->extradata+12);
1313 st->codec->channels = AV_RB8 (st->codec->extradata+21);
1314 st->codec->sample_rate = AV_RB32(st->codec->extradata+32);
1324 static int mov_read_stsd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1328 avio_r8(pb); /* version */
1329 avio_rb24(pb); /* flags */
1330 entries = avio_rb32(pb);
1332 return ff_mov_read_stsd_entries(c, pb, entries);
1335 static int mov_read_stsc(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1338 MOVStreamContext *sc;
1339 unsigned int i, entries;
1341 if (c->fc->nb_streams < 1)
1343 st = c->fc->streams[c->fc->nb_streams-1];
1346 avio_r8(pb); /* version */
1347 avio_rb24(pb); /* flags */
1349 entries = avio_rb32(pb);
1351 av_dlog(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
1353 if (entries >= UINT_MAX / sizeof(*sc->stsc_data))
1355 sc->stsc_data = av_malloc(entries * sizeof(*sc->stsc_data));
1357 return AVERROR(ENOMEM);
1358 sc->stsc_count = entries;
1360 for (i=0; i<entries; i++) {
1361 sc->stsc_data[i].first = avio_rb32(pb);
1362 sc->stsc_data[i].count = avio_rb32(pb);
1363 sc->stsc_data[i].id = avio_rb32(pb);
1368 static int mov_read_stps(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1371 MOVStreamContext *sc;
1372 unsigned i, entries;
1374 if (c->fc->nb_streams < 1)
1376 st = c->fc->streams[c->fc->nb_streams-1];
1379 avio_rb32(pb); // version + flags
1381 entries = avio_rb32(pb);
1382 if (entries >= UINT_MAX / sizeof(*sc->stps_data))
1384 sc->stps_data = av_malloc(entries * sizeof(*sc->stps_data));
1386 return AVERROR(ENOMEM);
1387 sc->stps_count = entries;
1389 for (i = 0; i < entries; i++) {
1390 sc->stps_data[i] = avio_rb32(pb);
1391 //av_dlog(c->fc, "stps %d\n", sc->stps_data[i]);
1397 static int mov_read_stss(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1400 MOVStreamContext *sc;
1401 unsigned int i, entries;
1403 if (c->fc->nb_streams < 1)
1405 st = c->fc->streams[c->fc->nb_streams-1];
1408 avio_r8(pb); /* version */
1409 avio_rb24(pb); /* flags */
1411 entries = avio_rb32(pb);
1413 av_dlog(c->fc, "keyframe_count = %d\n", entries);
1415 if (entries >= UINT_MAX / sizeof(int))
1417 sc->keyframes = av_malloc(entries * sizeof(int));
1419 return AVERROR(ENOMEM);
1420 sc->keyframe_count = entries;
1422 for (i=0; i<entries; i++) {
1423 sc->keyframes[i] = avio_rb32(pb);
1424 //av_dlog(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
1429 static int mov_read_stsz(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1432 MOVStreamContext *sc;
1433 unsigned int i, entries, sample_size, field_size, num_bytes;
1437 if (c->fc->nb_streams < 1)
1439 st = c->fc->streams[c->fc->nb_streams-1];
1442 avio_r8(pb); /* version */
1443 avio_rb24(pb); /* flags */
1445 if (atom.type == MKTAG('s','t','s','z')) {
1446 sample_size = avio_rb32(pb);
1447 if (!sc->sample_size) /* do not overwrite value computed in stsd */
1448 sc->sample_size = sample_size;
1452 avio_rb24(pb); /* reserved */
1453 field_size = avio_r8(pb);
1455 entries = avio_rb32(pb);
1457 av_dlog(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, entries);
1459 sc->sample_count = entries;
1463 if (field_size != 4 && field_size != 8 && field_size != 16 && field_size != 32) {
1464 av_log(c->fc, AV_LOG_ERROR, "Invalid sample field size %d\n", field_size);
1468 if (entries >= UINT_MAX / sizeof(int) || entries >= (UINT_MAX - 4) / field_size)
1470 sc->sample_sizes = av_malloc(entries * sizeof(int));
1471 if (!sc->sample_sizes)
1472 return AVERROR(ENOMEM);
1474 num_bytes = (entries*field_size+4)>>3;
1476 buf = av_malloc(num_bytes+FF_INPUT_BUFFER_PADDING_SIZE);
1478 av_freep(&sc->sample_sizes);
1479 return AVERROR(ENOMEM);
1482 if (avio_read(pb, buf, num_bytes) < num_bytes) {
1483 av_freep(&sc->sample_sizes);
1488 init_get_bits(&gb, buf, 8*num_bytes);
1490 for (i=0; i<entries; i++)
1491 sc->sample_sizes[i] = get_bits_long(&gb, field_size);
1497 static int mov_read_stts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1500 MOVStreamContext *sc;
1501 unsigned int i, entries;
1503 int64_t total_sample_count=0;
1505 if (c->fc->nb_streams < 1)
1507 st = c->fc->streams[c->fc->nb_streams-1];
1510 avio_r8(pb); /* version */
1511 avio_rb24(pb); /* flags */
1512 entries = avio_rb32(pb);
1514 av_dlog(c->fc, "track[%i].stts.entries = %i\n",
1515 c->fc->nb_streams-1, entries);
1517 if (!entries || entries >= UINT_MAX / sizeof(*sc->stts_data))
1518 return AVERROR(EINVAL);
1520 sc->stts_data = av_malloc(entries * sizeof(*sc->stts_data));
1522 return AVERROR(ENOMEM);
1524 sc->stts_count = entries;
1526 for (i=0; i<entries; i++) {
1527 int sample_duration;
1530 sample_count=avio_rb32(pb);
1531 sample_duration = avio_rb32(pb);
1532 sc->stts_data[i].count= sample_count;
1533 sc->stts_data[i].duration= sample_duration;
1535 av_dlog(c->fc, "sample_count=%d, sample_duration=%d\n",
1536 sample_count, sample_duration);
1538 duration+=(int64_t)sample_duration*sample_count;
1539 total_sample_count+=sample_count;
1542 st->nb_frames= total_sample_count;
1544 st->duration= duration;
1548 static int mov_read_ctts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1551 MOVStreamContext *sc;
1552 unsigned int i, entries;
1554 if (c->fc->nb_streams < 1)
1556 st = c->fc->streams[c->fc->nb_streams-1];
1559 avio_r8(pb); /* version */
1560 avio_rb24(pb); /* flags */
1561 entries = avio_rb32(pb);
1563 av_dlog(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
1565 if (entries >= UINT_MAX / sizeof(*sc->ctts_data))
1567 sc->ctts_data = av_malloc(entries * sizeof(*sc->ctts_data));
1569 return AVERROR(ENOMEM);
1570 sc->ctts_count = entries;
1572 for (i=0; i<entries; i++) {
1573 int count =avio_rb32(pb);
1574 int duration =avio_rb32(pb);
1576 sc->ctts_data[i].count = count;
1577 sc->ctts_data[i].duration= duration;
1579 sc->dts_shift = FFMAX(sc->dts_shift, -duration);
1582 av_dlog(c->fc, "dts shift %d\n", sc->dts_shift);
1587 static void mov_build_index(MOVContext *mov, AVStream *st)
1589 MOVStreamContext *sc = st->priv_data;
1590 int64_t current_offset;
1591 int64_t current_dts = 0;
1592 unsigned int stts_index = 0;
1593 unsigned int stsc_index = 0;
1594 unsigned int stss_index = 0;
1595 unsigned int stps_index = 0;
1597 uint64_t stream_size = 0;
1599 /* adjust first dts according to edit list */
1600 if (sc->time_offset && mov->time_scale > 0) {
1601 if (sc->time_offset < 0)
1602 sc->time_offset = av_rescale(sc->time_offset, sc->time_scale, mov->time_scale);
1603 current_dts = -sc->time_offset;
1604 if (sc->ctts_data && sc->stts_data &&
1605 sc->ctts_data[0].duration / sc->stts_data[0].duration > 16) {
1606 /* more than 16 frames delay, dts are likely wrong
1607 this happens with files created by iMovie */
1609 st->codec->has_b_frames = 1;
1613 /* only use old uncompressed audio chunk demuxing when stts specifies it */
1614 if (!(st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
1615 sc->stts_count == 1 && sc->stts_data[0].duration == 1)) {
1616 unsigned int current_sample = 0;
1617 unsigned int stts_sample = 0;
1618 unsigned int sample_size;
1619 unsigned int distance = 0;
1620 int key_off = sc->keyframes && sc->keyframes[0] == 1;
1622 current_dts -= sc->dts_shift;
1624 if (sc->sample_count >= UINT_MAX / sizeof(*st->index_entries))
1626 st->index_entries = av_malloc(sc->sample_count*sizeof(*st->index_entries));
1627 if (!st->index_entries)
1629 st->index_entries_allocated_size = sc->sample_count*sizeof(*st->index_entries);
1631 for (i = 0; i < sc->chunk_count; i++) {
1632 current_offset = sc->chunk_offsets[i];
1633 while (stsc_index + 1 < sc->stsc_count &&
1634 i + 1 == sc->stsc_data[stsc_index + 1].first)
1636 for (j = 0; j < sc->stsc_data[stsc_index].count; j++) {
1638 if (current_sample >= sc->sample_count) {
1639 av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
1643 if (!sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index]) {
1645 if (stss_index + 1 < sc->keyframe_count)
1647 } else if (sc->stps_count && current_sample+key_off == sc->stps_data[stps_index]) {
1649 if (stps_index + 1 < sc->stps_count)
1654 sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
1655 if (sc->pseudo_stream_id == -1 ||
1656 sc->stsc_data[stsc_index].id - 1 == sc->pseudo_stream_id) {
1657 AVIndexEntry *e = &st->index_entries[st->nb_index_entries++];
1658 e->pos = current_offset;
1659 e->timestamp = current_dts;
1660 e->size = sample_size;
1661 e->min_distance = distance;
1662 e->flags = keyframe ? AVINDEX_KEYFRAME : 0;
1663 av_dlog(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
1664 "size %d, distance %d, keyframe %d\n", st->index, current_sample,
1665 current_offset, current_dts, sample_size, distance, keyframe);
1668 current_offset += sample_size;
1669 stream_size += sample_size;
1670 current_dts += sc->stts_data[stts_index].duration;
1674 if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
1680 if (st->duration > 0)
1681 st->codec->bit_rate = stream_size*8*sc->time_scale/st->duration;
1683 unsigned chunk_samples, total = 0;
1685 // compute total chunk count
1686 for (i = 0; i < sc->stsc_count; i++) {
1687 unsigned count, chunk_count;
1689 chunk_samples = sc->stsc_data[i].count;
1690 if (sc->samples_per_frame && chunk_samples % sc->samples_per_frame) {
1691 av_log(mov->fc, AV_LOG_ERROR, "error unaligned chunk\n");
1695 if (sc->samples_per_frame >= 160) { // gsm
1696 count = chunk_samples / sc->samples_per_frame;
1697 } else if (sc->samples_per_frame > 1) {
1698 unsigned samples = (1024/sc->samples_per_frame)*sc->samples_per_frame;
1699 count = (chunk_samples+samples-1) / samples;
1701 count = (chunk_samples+1023) / 1024;
1704 if (i < sc->stsc_count - 1)
1705 chunk_count = sc->stsc_data[i+1].first - sc->stsc_data[i].first;
1707 chunk_count = sc->chunk_count - (sc->stsc_data[i].first - 1);
1708 total += chunk_count * count;
1711 av_dlog(mov->fc, "chunk count %d\n", total);
1712 if (total >= UINT_MAX / sizeof(*st->index_entries))
1714 st->index_entries = av_malloc(total*sizeof(*st->index_entries));
1715 if (!st->index_entries)
1717 st->index_entries_allocated_size = total*sizeof(*st->index_entries);
1720 for (i = 0; i < sc->chunk_count; i++) {
1721 current_offset = sc->chunk_offsets[i];
1722 if (stsc_index + 1 < sc->stsc_count &&
1723 i + 1 == sc->stsc_data[stsc_index + 1].first)
1725 chunk_samples = sc->stsc_data[stsc_index].count;
1727 while (chunk_samples > 0) {
1729 unsigned size, samples;
1731 if (sc->samples_per_frame >= 160) { // gsm
1732 samples = sc->samples_per_frame;
1733 size = sc->bytes_per_frame;
1735 if (sc->samples_per_frame > 1) {
1736 samples = FFMIN((1024 / sc->samples_per_frame)*
1737 sc->samples_per_frame, chunk_samples);
1738 size = (samples / sc->samples_per_frame) * sc->bytes_per_frame;
1740 samples = FFMIN(1024, chunk_samples);
1741 size = samples * sc->sample_size;
1745 if (st->nb_index_entries >= total) {
1746 av_log(mov->fc, AV_LOG_ERROR, "wrong chunk count %d\n", total);
1749 e = &st->index_entries[st->nb_index_entries++];
1750 e->pos = current_offset;
1751 e->timestamp = current_dts;
1753 e->min_distance = 0;
1754 e->flags = AVINDEX_KEYFRAME;
1755 av_dlog(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", "
1756 "size %d, duration %d\n", st->index, i, current_offset, current_dts,
1759 current_offset += size;
1760 current_dts += samples;
1761 chunk_samples -= samples;
1767 static int mov_open_dref(AVIOContext **pb, char *src, MOVDref *ref)
1769 /* try relative path, we do not try the absolute because it can leak information about our
1770 system to an attacker */
1771 if (ref->nlvl_to > 0 && ref->nlvl_from > 0) {
1772 char filename[1024];
1776 /* find a source dir */
1777 src_path = strrchr(src, '/');
1783 /* find a next level down to target */
1784 for (i = 0, l = strlen(ref->path) - 1; l >= 0; l--)
1785 if (ref->path[l] == '/') {
1786 if (i == ref->nlvl_to - 1)
1792 /* compose filename if next level down to target was found */
1793 if (i == ref->nlvl_to - 1 && src_path - src < sizeof(filename)) {
1794 memcpy(filename, src, src_path - src);
1795 filename[src_path - src] = 0;
1797 for (i = 1; i < ref->nlvl_from; i++)
1798 av_strlcat(filename, "../", 1024);
1800 av_strlcat(filename, ref->path + l + 1, 1024);
1802 if (!avio_open(pb, filename, AVIO_FLAG_READ))
1807 return AVERROR(ENOENT);
1810 static int mov_read_trak(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1813 MOVStreamContext *sc;
1816 st = avformat_new_stream(c->fc, NULL);
1817 if (!st) return AVERROR(ENOMEM);
1818 st->id = c->fc->nb_streams;
1819 sc = av_mallocz(sizeof(MOVStreamContext));
1820 if (!sc) return AVERROR(ENOMEM);
1823 st->codec->codec_type = AVMEDIA_TYPE_DATA;
1824 sc->ffindex = st->index;
1826 if ((ret = mov_read_default(c, pb, atom)) < 0)
1830 if (sc->chunk_count && (!sc->stts_count || !sc->stsc_count ||
1831 (!sc->sample_size && !sc->sample_count))) {
1832 av_log(c->fc, AV_LOG_ERROR, "stream %d, missing mandatory atoms, broken header\n",
1837 if (sc->time_scale <= 0) {
1838 av_log(c->fc, AV_LOG_WARNING, "stream %d, timescale not set\n", st->index);
1839 sc->time_scale = c->time_scale;
1840 if (sc->time_scale <= 0)
1844 av_set_pts_info(st, 64, 1, sc->time_scale);
1846 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
1847 !st->codec->frame_size && sc->stts_count == 1) {
1848 st->codec->frame_size = av_rescale(sc->stts_data[0].duration,
1849 st->codec->sample_rate, sc->time_scale);
1850 av_dlog(c->fc, "frame size %d\n", st->codec->frame_size);
1853 mov_build_index(c, st);
1855 if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) {
1856 MOVDref *dref = &sc->drefs[sc->dref_id - 1];
1857 if (mov_open_dref(&sc->pb, c->fc->filename, dref) < 0)
1858 av_log(c->fc, AV_LOG_ERROR,
1859 "stream %d, error opening alias: path='%s', dir='%s', "
1860 "filename='%s', volume='%s', nlvl_from=%d, nlvl_to=%d\n",
1861 st->index, dref->path, dref->dir, dref->filename,
1862 dref->volume, dref->nlvl_from, dref->nlvl_to);
1866 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1867 if (!st->sample_aspect_ratio.num &&
1868 (st->codec->width != sc->width || st->codec->height != sc->height)) {
1869 st->sample_aspect_ratio = av_d2q(((double)st->codec->height * sc->width) /
1870 ((double)st->codec->width * sc->height), INT_MAX);
1873 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
1874 sc->time_scale*st->nb_frames, st->duration, INT_MAX);
1876 if (sc->stts_count == 1 || (sc->stts_count == 2 && sc->stts_data[1].count == 1))
1877 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den,
1878 sc->time_scale, sc->stts_data[0].duration, INT_MAX);
1881 switch (st->codec->codec_id) {
1882 #if CONFIG_H261_DECODER
1885 #if CONFIG_H263_DECODER
1888 #if CONFIG_H264_DECODER
1891 #if CONFIG_MPEG4_DECODER
1892 case CODEC_ID_MPEG4:
1894 st->codec->width = 0; /* let decoder init width/height */
1895 st->codec->height= 0;
1899 /* Do not need those anymore. */
1900 av_freep(&sc->chunk_offsets);
1901 av_freep(&sc->stsc_data);
1902 av_freep(&sc->sample_sizes);
1903 av_freep(&sc->keyframes);
1904 av_freep(&sc->stts_data);
1905 av_freep(&sc->stps_data);
1910 static int mov_read_ilst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1913 c->itunes_metadata = 1;
1914 ret = mov_read_default(c, pb, atom);
1915 c->itunes_metadata = 0;
1919 static int mov_read_meta(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1921 while (atom.size > 8) {
1922 uint32_t tag = avio_rl32(pb);
1924 if (tag == MKTAG('h','d','l','r')) {
1925 avio_seek(pb, -8, SEEK_CUR);
1927 return mov_read_default(c, pb, atom);
1933 static int mov_read_tkhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1938 int64_t disp_transform[2];
1939 int display_matrix[3][2];
1941 MOVStreamContext *sc;
1944 if (c->fc->nb_streams < 1)
1946 st = c->fc->streams[c->fc->nb_streams-1];
1949 version = avio_r8(pb);
1950 avio_rb24(pb); /* flags */
1952 MOV_TRACK_ENABLED 0x0001
1953 MOV_TRACK_IN_MOVIE 0x0002
1954 MOV_TRACK_IN_PREVIEW 0x0004
1955 MOV_TRACK_IN_POSTER 0x0008
1962 avio_rb32(pb); /* creation time */
1963 avio_rb32(pb); /* modification time */
1965 st->id = (int)avio_rb32(pb); /* track id (NOT 0 !)*/
1966 avio_rb32(pb); /* reserved */
1968 /* highlevel (considering edits) duration in movie timebase */
1969 (version == 1) ? avio_rb64(pb) : avio_rb32(pb);
1970 avio_rb32(pb); /* reserved */
1971 avio_rb32(pb); /* reserved */
1973 avio_rb16(pb); /* layer */
1974 avio_rb16(pb); /* alternate group */
1975 avio_rb16(pb); /* volume */
1976 avio_rb16(pb); /* reserved */
1978 //read in the display matrix (outlined in ISO 14496-12, Section 6.2.2)
1979 // they're kept in fixed point format through all calculations
1980 // ignore u,v,z b/c we don't need the scale factor to calc aspect ratio
1981 for (i = 0; i < 3; i++) {
1982 display_matrix[i][0] = avio_rb32(pb); // 16.16 fixed point
1983 display_matrix[i][1] = avio_rb32(pb); // 16.16 fixed point
1984 avio_rb32(pb); // 2.30 fixed point (not used)
1987 width = avio_rb32(pb); // 16.16 fixed point track width
1988 height = avio_rb32(pb); // 16.16 fixed point track height
1989 sc->width = width >> 16;
1990 sc->height = height >> 16;
1992 // transform the display width/height according to the matrix
1993 // skip this if the display matrix is the default identity matrix
1994 // or if it is rotating the picture, ex iPhone 3GS
1995 // to keep the same scale, use [width height 1<<16]
1996 if (width && height &&
1997 ((display_matrix[0][0] != 65536 ||
1998 display_matrix[1][1] != 65536) &&
1999 !display_matrix[0][1] &&
2000 !display_matrix[1][0] &&
2001 !display_matrix[2][0] && !display_matrix[2][1])) {
2002 for (i = 0; i < 2; i++)
2004 (int64_t) width * display_matrix[0][i] +
2005 (int64_t) height * display_matrix[1][i] +
2006 ((int64_t) display_matrix[2][i] << 16);
2008 //sample aspect ratio is new width/height divided by old width/height
2009 st->sample_aspect_ratio = av_d2q(
2010 ((double) disp_transform[0] * height) /
2011 ((double) disp_transform[1] * width), INT_MAX);
2016 static int mov_read_tfhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2018 MOVFragment *frag = &c->fragment;
2019 MOVTrackExt *trex = NULL;
2020 int flags, track_id, i;
2022 avio_r8(pb); /* version */
2023 flags = avio_rb24(pb);
2025 track_id = avio_rb32(pb);
2028 frag->track_id = track_id;
2029 for (i = 0; i < c->trex_count; i++)
2030 if (c->trex_data[i].track_id == frag->track_id) {
2031 trex = &c->trex_data[i];
2035 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding trex\n");
2039 if (flags & 0x01) frag->base_data_offset = avio_rb64(pb);
2040 else frag->base_data_offset = frag->moof_offset;
2041 if (flags & 0x02) frag->stsd_id = avio_rb32(pb);
2042 else frag->stsd_id = trex->stsd_id;
2044 frag->duration = flags & 0x08 ? avio_rb32(pb) : trex->duration;
2045 frag->size = flags & 0x10 ? avio_rb32(pb) : trex->size;
2046 frag->flags = flags & 0x20 ? avio_rb32(pb) : trex->flags;
2047 av_dlog(c->fc, "frag flags 0x%x\n", frag->flags);
2051 static int mov_read_chap(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2053 c->chapter_track = avio_rb32(pb);
2057 static int mov_read_trex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2061 if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data))
2063 trex = av_realloc(c->trex_data, (c->trex_count+1)*sizeof(*c->trex_data));
2065 return AVERROR(ENOMEM);
2066 c->trex_data = trex;
2067 trex = &c->trex_data[c->trex_count++];
2068 avio_r8(pb); /* version */
2069 avio_rb24(pb); /* flags */
2070 trex->track_id = avio_rb32(pb);
2071 trex->stsd_id = avio_rb32(pb);
2072 trex->duration = avio_rb32(pb);
2073 trex->size = avio_rb32(pb);
2074 trex->flags = avio_rb32(pb);
2078 static int mov_read_trun(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2080 MOVFragment *frag = &c->fragment;
2081 AVStream *st = NULL;
2082 MOVStreamContext *sc;
2086 int data_offset = 0;
2087 unsigned entries, first_sample_flags = frag->flags;
2088 int flags, distance, i;
2090 for (i = 0; i < c->fc->nb_streams; i++) {
2091 if (c->fc->streams[i]->id == frag->track_id) {
2092 st = c->fc->streams[i];
2097 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id);
2101 if (sc->pseudo_stream_id+1 != frag->stsd_id)
2103 avio_r8(pb); /* version */
2104 flags = avio_rb24(pb);
2105 entries = avio_rb32(pb);
2106 av_dlog(c->fc, "flags 0x%x entries %d\n", flags, entries);
2108 /* Always assume the presence of composition time offsets.
2109 * Without this assumption, for instance, we cannot deal with a track in fragmented movies that meet the following.
2110 * 1) in the initial movie, there are no samples.
2111 * 2) in the first movie fragment, there is only one sample without composition time offset.
2112 * 3) in the subsequent movie fragments, there are samples with composition time offset. */
2113 if (!sc->ctts_count && sc->sample_count)
2115 /* Complement ctts table if moov atom doesn't have ctts atom. */
2116 ctts_data = av_malloc(sizeof(*sc->ctts_data));
2118 return AVERROR(ENOMEM);
2119 sc->ctts_data = ctts_data;
2120 sc->ctts_data[sc->ctts_count].count = sc->sample_count;
2121 sc->ctts_data[sc->ctts_count].duration = 0;
2124 if ((uint64_t)entries+sc->ctts_count >= UINT_MAX/sizeof(*sc->ctts_data))
2126 ctts_data = av_realloc(sc->ctts_data,
2127 (entries+sc->ctts_count)*sizeof(*sc->ctts_data));
2129 return AVERROR(ENOMEM);
2130 sc->ctts_data = ctts_data;
2132 if (flags & 0x001) data_offset = avio_rb32(pb);
2133 if (flags & 0x004) first_sample_flags = avio_rb32(pb);
2134 dts = st->duration - sc->time_offset;
2135 offset = frag->base_data_offset + data_offset;
2137 av_dlog(c->fc, "first sample flags 0x%x\n", first_sample_flags);
2138 for (i = 0; i < entries; i++) {
2139 unsigned sample_size = frag->size;
2140 int sample_flags = i ? frag->flags : first_sample_flags;
2141 unsigned sample_duration = frag->duration;
2144 if (flags & 0x100) sample_duration = avio_rb32(pb);
2145 if (flags & 0x200) sample_size = avio_rb32(pb);
2146 if (flags & 0x400) sample_flags = avio_rb32(pb);
2147 sc->ctts_data[sc->ctts_count].count = 1;
2148 sc->ctts_data[sc->ctts_count].duration = (flags & 0x800) ? avio_rb32(pb) : 0;
2150 if ((keyframe = st->codec->codec_type == AVMEDIA_TYPE_AUDIO ||
2151 (flags & 0x004 && !i && !sample_flags) || sample_flags & 0x2000000))
2153 av_add_index_entry(st, offset, dts, sample_size, distance,
2154 keyframe ? AVINDEX_KEYFRAME : 0);
2155 av_dlog(c->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
2156 "size %d, distance %d, keyframe %d\n", st->index, sc->sample_count+i,
2157 offset, dts, sample_size, distance, keyframe);
2159 dts += sample_duration;
2160 offset += sample_size;
2162 frag->moof_offset = offset;
2163 st->duration = dts + sc->time_offset;
2167 /* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
2168 /* like the files created with Adobe Premiere 5.0, for samples see */
2169 /* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
2170 static int mov_read_wide(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2175 return 0; /* continue */
2176 if (avio_rb32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
2177 avio_skip(pb, atom.size - 4);
2180 atom.type = avio_rl32(pb);
2182 if (atom.type != MKTAG('m','d','a','t')) {
2183 avio_skip(pb, atom.size);
2186 err = mov_read_mdat(c, pb, atom);
2190 static int mov_read_cmov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2195 uint8_t *moov_data; /* uncompressed data */
2196 long cmov_len, moov_len;
2199 avio_rb32(pb); /* dcom atom */
2200 if (avio_rl32(pb) != MKTAG('d','c','o','m'))
2202 if (avio_rl32(pb) != MKTAG('z','l','i','b')) {
2203 av_log(c->fc, AV_LOG_ERROR, "unknown compression for cmov atom !");
2206 avio_rb32(pb); /* cmvd atom */
2207 if (avio_rl32(pb) != MKTAG('c','m','v','d'))
2209 moov_len = avio_rb32(pb); /* uncompressed size */
2210 cmov_len = atom.size - 6 * 4;
2212 cmov_data = av_malloc(cmov_len);
2214 return AVERROR(ENOMEM);
2215 moov_data = av_malloc(moov_len);
2218 return AVERROR(ENOMEM);
2220 avio_read(pb, cmov_data, cmov_len);
2221 if (uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
2222 goto free_and_return;
2223 if (ffio_init_context(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
2224 goto free_and_return;
2225 atom.type = MKTAG('m','o','o','v');
2226 atom.size = moov_len;
2227 ret = mov_read_default(c, &ctx, atom);
2233 av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
2238 /* edit list atom */
2239 static int mov_read_elst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2241 MOVStreamContext *sc;
2242 int i, edit_count, version;
2244 if (c->fc->nb_streams < 1)
2246 sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
2248 version = avio_r8(pb); /* version */
2249 avio_rb24(pb); /* flags */
2250 edit_count = avio_rb32(pb); /* entries */
2252 if ((uint64_t)edit_count*12+8 > atom.size)
2255 for (i=0; i<edit_count; i++){
2259 duration = avio_rb64(pb);
2260 time = avio_rb64(pb);
2262 duration = avio_rb32(pb); /* segment duration */
2263 time = (int32_t)avio_rb32(pb); /* media time */
2265 avio_rb32(pb); /* Media rate */
2266 if (i == 0 && time >= -1) {
2267 sc->time_offset = time != -1 ? time : -duration;
2272 av_log(c->fc, AV_LOG_WARNING, "multiple edit list entries, "
2273 "a/v desync might occur, patch welcome\n");
2275 av_dlog(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, edit_count);
2279 static const MOVParseTableEntry mov_default_parse_table[] = {
2280 { MKTAG('a','v','s','s'), mov_read_extradata },
2281 { MKTAG('c','h','p','l'), mov_read_chpl },
2282 { MKTAG('c','o','6','4'), mov_read_stco },
2283 { MKTAG('c','t','t','s'), mov_read_ctts }, /* composition time to sample */
2284 { MKTAG('d','i','n','f'), mov_read_default },
2285 { MKTAG('d','r','e','f'), mov_read_dref },
2286 { MKTAG('e','d','t','s'), mov_read_default },
2287 { MKTAG('e','l','s','t'), mov_read_elst },
2288 { MKTAG('e','n','d','a'), mov_read_enda },
2289 { MKTAG('f','i','e','l'), mov_read_extradata },
2290 { MKTAG('f','t','y','p'), mov_read_ftyp },
2291 { MKTAG('g','l','b','l'), mov_read_glbl },
2292 { MKTAG('h','d','l','r'), mov_read_hdlr },
2293 { MKTAG('i','l','s','t'), mov_read_ilst },
2294 { MKTAG('j','p','2','h'), mov_read_extradata },
2295 { MKTAG('m','d','a','t'), mov_read_mdat },
2296 { MKTAG('m','d','h','d'), mov_read_mdhd },
2297 { MKTAG('m','d','i','a'), mov_read_default },
2298 { MKTAG('m','e','t','a'), mov_read_meta },
2299 { MKTAG('m','i','n','f'), mov_read_default },
2300 { MKTAG('m','o','o','f'), mov_read_moof },
2301 { MKTAG('m','o','o','v'), mov_read_moov },
2302 { MKTAG('m','v','e','x'), mov_read_default },
2303 { MKTAG('m','v','h','d'), mov_read_mvhd },
2304 { MKTAG('S','M','I',' '), mov_read_smi }, /* Sorenson extension ??? */
2305 { MKTAG('a','l','a','c'), mov_read_extradata }, /* alac specific atom */
2306 { MKTAG('a','v','c','C'), mov_read_glbl },
2307 { MKTAG('p','a','s','p'), mov_read_pasp },
2308 { MKTAG('s','t','b','l'), mov_read_default },
2309 { MKTAG('s','t','c','o'), mov_read_stco },
2310 { MKTAG('s','t','p','s'), mov_read_stps },
2311 { MKTAG('s','t','r','f'), mov_read_strf },
2312 { MKTAG('s','t','s','c'), mov_read_stsc },
2313 { MKTAG('s','t','s','d'), mov_read_stsd }, /* sample description */
2314 { MKTAG('s','t','s','s'), mov_read_stss }, /* sync sample */
2315 { MKTAG('s','t','s','z'), mov_read_stsz }, /* sample size */
2316 { MKTAG('s','t','t','s'), mov_read_stts },
2317 { MKTAG('s','t','z','2'), mov_read_stsz }, /* compact sample size */
2318 { MKTAG('t','k','h','d'), mov_read_tkhd }, /* track header */
2319 { MKTAG('t','f','h','d'), mov_read_tfhd }, /* track fragment header */
2320 { MKTAG('t','r','a','k'), mov_read_trak },
2321 { MKTAG('t','r','a','f'), mov_read_default },
2322 { MKTAG('t','r','e','f'), mov_read_default },
2323 { MKTAG('c','h','a','p'), mov_read_chap },
2324 { MKTAG('t','r','e','x'), mov_read_trex },
2325 { MKTAG('t','r','u','n'), mov_read_trun },
2326 { MKTAG('u','d','t','a'), mov_read_default },
2327 { MKTAG('w','a','v','e'), mov_read_wave },
2328 { MKTAG('e','s','d','s'), mov_read_esds },
2329 { MKTAG('d','a','c','3'), mov_read_dac3 }, /* AC-3 info */
2330 { MKTAG('w','i','d','e'), mov_read_wide }, /* place holder */
2331 { MKTAG('w','f','e','x'), mov_read_wfex },
2332 { MKTAG('c','m','o','v'), mov_read_cmov },
2336 static int mov_probe(AVProbeData *p)
2338 unsigned int offset;
2342 /* check file header */
2345 /* ignore invalid offset */
2346 if ((offset + 8) > (unsigned int)p->buf_size)
2348 tag = AV_RL32(p->buf + offset + 4);
2350 /* check for obvious tags */
2351 case MKTAG('j','P',' ',' '): /* jpeg 2000 signature */
2352 case MKTAG('m','o','o','v'):
2353 case MKTAG('m','d','a','t'):
2354 case MKTAG('p','n','o','t'): /* detect movs with preview pics like ew.mov and april.mov */
2355 case MKTAG('u','d','t','a'): /* Packet Video PVAuthor adds this and a lot of more junk */
2356 case MKTAG('f','t','y','p'):
2357 return AVPROBE_SCORE_MAX;
2358 /* those are more common words, so rate then a bit less */
2359 case MKTAG('e','d','i','w'): /* xdcam files have reverted first tags */
2360 case MKTAG('w','i','d','e'):
2361 case MKTAG('f','r','e','e'):
2362 case MKTAG('j','u','n','k'):
2363 case MKTAG('p','i','c','t'):
2364 return AVPROBE_SCORE_MAX - 5;
2365 case MKTAG(0x82,0x82,0x7f,0x7d):
2366 case MKTAG('s','k','i','p'):
2367 case MKTAG('u','u','i','d'):
2368 case MKTAG('p','r','f','l'):
2369 offset = AV_RB32(p->buf+offset) + offset;
2370 /* if we only find those cause probedata is too small at least rate them */
2371 score = AVPROBE_SCORE_MAX - 50;
2374 /* unrecognized tag */
2380 // must be done after parsing all trak because there's no order requirement
2381 static void mov_read_chapters(AVFormatContext *s)
2383 MOVContext *mov = s->priv_data;
2384 AVStream *st = NULL;
2385 MOVStreamContext *sc;
2389 for (i = 0; i < s->nb_streams; i++)
2390 if (s->streams[i]->id == mov->chapter_track) {
2395 av_log(s, AV_LOG_ERROR, "Referenced QT chapter track not found\n");
2399 st->discard = AVDISCARD_ALL;
2401 cur_pos = avio_tell(sc->pb);
2403 for (i = 0; i < st->nb_index_entries; i++) {
2404 AVIndexEntry *sample = &st->index_entries[i];
2405 int64_t end = i+1 < st->nb_index_entries ? st->index_entries[i+1].timestamp : st->duration;
2410 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
2411 av_log(s, AV_LOG_ERROR, "Chapter %d not found in file\n", i);
2415 // the first two bytes are the length of the title
2416 len = avio_rb16(sc->pb);
2417 if (len > sample->size-2)
2419 title_len = 2*len + 1;
2420 if (!(title = av_mallocz(title_len)))
2423 // The samples could theoretically be in any encoding if there's an encd
2424 // atom following, but in practice are only utf-8 or utf-16, distinguished
2425 // instead by the presence of a BOM
2429 ch = avio_rb16(sc->pb);
2431 avio_get_str16be(sc->pb, len, title, title_len);
2432 else if (ch == 0xfffe)
2433 avio_get_str16le(sc->pb, len, title, title_len);
2436 if (len == 1 || len == 2)
2439 avio_get_str(sc->pb, len - 2, title + 2, title_len - 2);
2443 avpriv_new_chapter(s, i, st->time_base, sample->timestamp, end, title);
2447 avio_seek(sc->pb, cur_pos, SEEK_SET);
2450 static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
2452 MOVContext *mov = s->priv_data;
2453 AVIOContext *pb = s->pb;
2455 MOVAtom atom = { AV_RL32("root") };
2458 /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
2460 atom.size = avio_size(pb);
2462 atom.size = INT64_MAX;
2464 /* check MOV header */
2465 if ((err = mov_read_default(mov, pb, atom)) < 0) {
2466 av_log(s, AV_LOG_ERROR, "error reading header: %d\n", err);
2469 if (!mov->found_moov) {
2470 av_log(s, AV_LOG_ERROR, "moov atom not found\n");
2473 av_dlog(mov->fc, "on_parse_exit_offset=%"PRId64"\n", avio_tell(pb));
2475 if (pb->seekable && mov->chapter_track > 0)
2476 mov_read_chapters(s);
2481 static AVIndexEntry *mov_find_next_sample(AVFormatContext *s, AVStream **st)
2483 AVIndexEntry *sample = NULL;
2484 int64_t best_dts = INT64_MAX;
2486 for (i = 0; i < s->nb_streams; i++) {
2487 AVStream *avst = s->streams[i];
2488 MOVStreamContext *msc = avst->priv_data;
2489 if (msc->pb && msc->current_sample < avst->nb_index_entries) {
2490 AVIndexEntry *current_sample = &avst->index_entries[msc->current_sample];
2491 int64_t dts = av_rescale(current_sample->timestamp, AV_TIME_BASE, msc->time_scale);
2492 av_dlog(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
2493 if (!sample || (!s->pb->seekable && current_sample->pos < sample->pos) ||
2495 ((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb &&
2496 ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
2497 (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) {
2498 sample = current_sample;
2507 static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
2509 MOVContext *mov = s->priv_data;
2510 MOVStreamContext *sc;
2511 AVIndexEntry *sample;
2512 AVStream *st = NULL;
2515 sample = mov_find_next_sample(s, &st);
2517 mov->found_mdat = 0;
2518 if (s->pb->seekable||
2519 mov_read_default(mov, s->pb, (MOVAtom){ AV_RL32("root"), INT64_MAX }) < 0 ||
2522 av_dlog(s, "read fragments, offset 0x%"PRIx64"\n", avio_tell(s->pb));
2526 /* must be done just before reading, to avoid infinite loop on sample */
2527 sc->current_sample++;
2529 if (st->discard != AVDISCARD_ALL) {
2530 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
2531 av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
2532 sc->ffindex, sample->pos);
2535 ret = av_get_packet(sc->pb, pkt, sample->size);
2538 if (sc->has_palette) {
2541 pal = av_packet_new_side_data(pkt, AV_PKT_DATA_PALETTE, AVPALETTE_SIZE);
2543 av_log(mov->fc, AV_LOG_ERROR, "Cannot append palette to packet\n");
2545 memcpy(pal, sc->palette, AVPALETTE_SIZE);
2546 sc->has_palette = 0;
2549 #if CONFIG_DV_DEMUXER
2550 if (mov->dv_demux && sc->dv_audio_container) {
2551 avpriv_dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size);
2554 ret = avpriv_dv_get_packet(mov->dv_demux, pkt);
2561 pkt->stream_index = sc->ffindex;
2562 pkt->dts = sample->timestamp;
2563 if (sc->ctts_data) {
2564 pkt->pts = pkt->dts + sc->dts_shift + sc->ctts_data[sc->ctts_index].duration;
2565 /* update ctts context */
2567 if (sc->ctts_index < sc->ctts_count &&
2568 sc->ctts_data[sc->ctts_index].count == sc->ctts_sample) {
2570 sc->ctts_sample = 0;
2573 pkt->dts = AV_NOPTS_VALUE;
2575 int64_t next_dts = (sc->current_sample < st->nb_index_entries) ?
2576 st->index_entries[sc->current_sample].timestamp : st->duration;
2577 pkt->duration = next_dts - pkt->dts;
2578 pkt->pts = pkt->dts;
2580 if (st->discard == AVDISCARD_ALL)
2582 pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? AV_PKT_FLAG_KEY : 0;
2583 pkt->pos = sample->pos;
2584 av_dlog(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n",
2585 pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
2589 static int mov_seek_stream(AVFormatContext *s, AVStream *st, int64_t timestamp, int flags)
2591 MOVStreamContext *sc = st->priv_data;
2592 int sample, time_sample;
2595 sample = av_index_search_timestamp(st, timestamp, flags);
2596 av_dlog(s, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
2597 if (sample < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
2599 if (sample < 0) /* not sure what to do */
2601 sc->current_sample = sample;
2602 av_dlog(s, "stream %d, found sample %d\n", st->index, sc->current_sample);
2603 /* adjust ctts index */
2604 if (sc->ctts_data) {
2606 for (i = 0; i < sc->ctts_count; i++) {
2607 int next = time_sample + sc->ctts_data[i].count;
2608 if (next > sc->current_sample) {
2610 sc->ctts_sample = sc->current_sample - time_sample;
2619 static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
2622 int64_t seek_timestamp, timestamp;
2626 if (stream_index >= s->nb_streams)
2628 if (sample_time < 0)
2631 st = s->streams[stream_index];
2632 sample = mov_seek_stream(s, st, sample_time, flags);
2636 /* adjust seek timestamp to found sample timestamp */
2637 seek_timestamp = st->index_entries[sample].timestamp;
2639 for (i = 0; i < s->nb_streams; i++) {
2641 if (stream_index == i)
2644 timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
2645 mov_seek_stream(s, st, timestamp, flags);
2650 static int mov_read_close(AVFormatContext *s)
2652 MOVContext *mov = s->priv_data;
2655 for (i = 0; i < s->nb_streams; i++) {
2656 AVStream *st = s->streams[i];
2657 MOVStreamContext *sc = st->priv_data;
2659 av_freep(&sc->ctts_data);
2660 for (j = 0; j < sc->drefs_count; j++) {
2661 av_freep(&sc->drefs[j].path);
2662 av_freep(&sc->drefs[j].dir);
2664 av_freep(&sc->drefs);
2665 if (sc->pb && sc->pb != s->pb)
2669 if (mov->dv_demux) {
2670 for (i = 0; i < mov->dv_fctx->nb_streams; i++) {
2671 av_freep(&mov->dv_fctx->streams[i]->codec);
2672 av_freep(&mov->dv_fctx->streams[i]);
2674 av_freep(&mov->dv_fctx);
2675 av_freep(&mov->dv_demux);
2678 av_freep(&mov->trex_data);
2683 AVInputFormat ff_mov_demuxer = {
2684 .name = "mov,mp4,m4a,3gp,3g2,mj2",
2685 .long_name = NULL_IF_CONFIG_SMALL("QuickTime/MPEG-4/Motion JPEG 2000 format"),
2686 .priv_data_size = sizeof(MOVContext),
2687 .read_probe = mov_probe,
2688 .read_header = mov_read_header,
2689 .read_packet = mov_read_packet,
2690 .read_close = mov_read_close,
2691 .read_seek = mov_read_seek,