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 FFmpeg.
8 * FFmpeg 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 * FFmpeg 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 FFmpeg; 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_int8_no_padding(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,'g','r','p'): key = "grouping"; break;
204 case MKTAG(0xa9,'l','y','r'): key = "lyrics"; break;
205 case MKTAG(0xa9,'c','m','t'):
206 case MKTAG(0xa9,'i','n','f'): key = "comment"; break;
207 case MKTAG(0xa9,'a','l','b'): key = "album"; break;
208 case MKTAG(0xa9,'d','a','y'): key = "date"; break;
209 case MKTAG(0xa9,'g','e','n'): key = "genre"; break;
210 case MKTAG( 'g','n','r','e'): key = "genre";
211 parse = mov_metadata_gnre; break;
212 case MKTAG(0xa9,'t','o','o'):
213 case MKTAG(0xa9,'s','w','r'): key = "encoder"; break;
214 case MKTAG(0xa9,'e','n','c'): key = "encoder"; break;
215 case MKTAG( 'd','e','s','c'): key = "description";break;
216 case MKTAG( 'l','d','e','s'): key = "synopsis"; break;
217 case MKTAG( 't','v','s','h'): key = "show"; break;
218 case MKTAG( 't','v','e','n'): key = "episode_id";break;
219 case MKTAG( 't','v','n','n'): key = "network"; break;
220 case MKTAG( 't','r','k','n'): key = "track";
221 parse = mov_metadata_track_or_disc_number; break;
222 case MKTAG( 'd','i','s','k'): key = "disc";
223 parse = mov_metadata_track_or_disc_number; break;
224 case MKTAG( 't','v','e','s'): key = "episode_sort";
225 parse = mov_metadata_int8_bypass_padding; break;
226 case MKTAG( 't','v','s','n'): key = "season_number";
227 parse = mov_metadata_int8_bypass_padding; break;
228 case MKTAG( 's','t','i','k'): key = "media_type";
229 parse = mov_metadata_int8_no_padding; break;
230 case MKTAG( 'h','d','v','d'): key = "hd_video";
231 parse = mov_metadata_int8_no_padding; break;
232 case MKTAG( 'p','g','a','p'): key = "gapless_playback";
233 parse = mov_metadata_int8_no_padding; break;
236 if (c->itunes_metadata && atom.size > 8) {
237 int data_size = avio_rb32(pb);
238 int tag = avio_rl32(pb);
239 if (tag == MKTAG('d','a','t','a')) {
240 data_type = avio_rb32(pb); // type
241 avio_rb32(pb); // unknown
242 str_size = data_size - 16;
245 } else if (atom.size > 4 && key && !c->itunes_metadata) {
246 str_size = avio_rb16(pb); // string length
247 langcode = avio_rb16(pb);
248 ff_mov_lang_to_iso639(langcode, language);
251 str_size = atom.size;
253 #ifdef MOV_EXPORT_ALL_METADATA
255 snprintf(tmp_key, 5, "%.4s", (char*)&atom.type);
265 str_size = FFMIN3(sizeof(str)-1, str_size, atom.size);
268 parse(c, pb, str_size, key);
270 if (data_type == 3 || (data_type == 0 && langcode < 0x800)) { // MAC Encoded
271 mov_read_mac_string(c, pb, str_size, str, sizeof(str));
273 avio_read(pb, str, str_size);
276 av_dict_set(&c->fc->metadata, key, str, 0);
277 if (*language && strcmp(language, "und")) {
278 snprintf(key2, sizeof(key2), "%s-%s", key, language);
279 av_dict_set(&c->fc->metadata, key2, str, 0);
282 av_dlog(c->fc, "lang \"%3s\" ", language);
283 av_dlog(c->fc, "tag \"%s\" value \"%s\" atom \"%.4s\" %d %"PRId64"\n",
284 key, str, (char*)&atom.type, str_size, atom.size);
289 static int mov_read_chpl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
292 int i, nb_chapters, str_len, version;
295 if ((atom.size -= 5) < 0)
298 version = avio_r8(pb);
301 avio_rb32(pb); // ???
302 nb_chapters = avio_r8(pb);
304 for (i = 0; i < nb_chapters; i++) {
308 start = avio_rb64(pb);
309 str_len = avio_r8(pb);
311 if ((atom.size -= 9+str_len) < 0)
314 avio_read(pb, str, str_len);
316 avpriv_new_chapter(c->fc, i, (AVRational){1,10000000}, start, AV_NOPTS_VALUE, str);
321 static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom)
323 int64_t total_size = 0;
328 atom.size = INT64_MAX;
329 while (total_size + 8 < atom.size && !url_feof(pb)) {
330 int (*parse)(MOVContext*, AVIOContext*, MOVAtom) = NULL;
333 if (atom.size >= 8) {
334 a.size = avio_rb32(pb);
335 a.type = avio_rl32(pb);
337 av_dlog(c->fc, "type: %08x '%.4s' parent:'%.4s' sz: %"PRId64" %"PRId64" %"PRId64"\n",
338 a.type, (char*)&a.type, (char*)&atom.type, a.size, total_size, atom.size);
340 if (a.size == 1) { /* 64 bit extended size */
341 a.size = avio_rb64(pb) - 8;
345 a.size = atom.size - total_size;
352 a.size = FFMIN(a.size, atom.size - total_size);
354 for (i = 0; mov_default_parse_table[i].type; i++)
355 if (mov_default_parse_table[i].type == a.type) {
356 parse = mov_default_parse_table[i].parse;
360 // container is user data
361 if (!parse && (atom.type == MKTAG('u','d','t','a') ||
362 atom.type == MKTAG('i','l','s','t')))
363 parse = mov_read_udta_string;
365 if (!parse) { /* skip leaf atoms data */
366 avio_skip(pb, a.size);
368 int64_t start_pos = avio_tell(pb);
370 int err = parse(c, pb, a);
373 if (c->found_moov && c->found_mdat &&
374 (!pb->seekable || start_pos + a.size == avio_size(pb)))
376 left = a.size - avio_tell(pb) + start_pos;
377 if (left > 0) /* skip garbage at atom end */
381 total_size += a.size;
384 if (total_size < atom.size && atom.size < 0x7ffff)
385 avio_skip(pb, atom.size - total_size);
390 static int mov_read_dref(MOVContext *c, AVIOContext *pb, MOVAtom atom)
393 MOVStreamContext *sc;
396 if (c->fc->nb_streams < 1)
398 st = c->fc->streams[c->fc->nb_streams-1];
401 avio_rb32(pb); // version + flags
402 entries = avio_rb32(pb);
403 if (entries >= UINT_MAX / sizeof(*sc->drefs))
405 sc->drefs = av_mallocz(entries * sizeof(*sc->drefs));
407 return AVERROR(ENOMEM);
408 sc->drefs_count = entries;
410 for (i = 0; i < sc->drefs_count; i++) {
411 MOVDref *dref = &sc->drefs[i];
412 uint32_t size = avio_rb32(pb);
413 int64_t next = avio_tell(pb) + size - 4;
418 dref->type = avio_rl32(pb);
419 avio_rb32(pb); // version + flags
420 av_dlog(c->fc, "type %.4s size %d\n", (char*)&dref->type, size);
422 if (dref->type == MKTAG('a','l','i','s') && size > 150) {
423 /* macintosh alias record */
424 uint16_t volume_len, len;
429 volume_len = avio_r8(pb);
430 volume_len = FFMIN(volume_len, 27);
431 avio_read(pb, dref->volume, 27);
432 dref->volume[volume_len] = 0;
433 av_log(c->fc, AV_LOG_DEBUG, "volume %s, len %d\n", dref->volume, volume_len);
438 len = FFMIN(len, 63);
439 avio_read(pb, dref->filename, 63);
440 dref->filename[len] = 0;
441 av_log(c->fc, AV_LOG_DEBUG, "filename %s, len %d\n", dref->filename, len);
445 /* read next level up_from_alias/down_to_target */
446 dref->nlvl_from = avio_rb16(pb);
447 dref->nlvl_to = avio_rb16(pb);
448 av_log(c->fc, AV_LOG_DEBUG, "nlvl from %d, nlvl to %d\n",
449 dref->nlvl_from, dref->nlvl_to);
453 for (type = 0; type != -1 && avio_tell(pb) < next; ) {
454 type = avio_rb16(pb);
456 av_log(c->fc, AV_LOG_DEBUG, "type %d, len %d\n", type, len);
459 if (type == 2) { // absolute path
461 dref->path = av_mallocz(len+1);
463 return AVERROR(ENOMEM);
464 avio_read(pb, dref->path, len);
465 if (len > volume_len && !strncmp(dref->path, dref->volume, volume_len)) {
467 memmove(dref->path, dref->path+volume_len, len);
470 for (j = 0; j < len; j++)
471 if (dref->path[j] == ':')
473 av_log(c->fc, AV_LOG_DEBUG, "path %s\n", dref->path);
474 } else if (type == 0) { // directory name
476 dref->dir = av_malloc(len+1);
478 return AVERROR(ENOMEM);
479 avio_read(pb, dref->dir, len);
481 for (j = 0; j < len; j++)
482 if (dref->dir[j] == ':')
484 av_log(c->fc, AV_LOG_DEBUG, "dir %s\n", dref->dir);
489 avio_seek(pb, next, SEEK_SET);
494 static int mov_read_hdlr(MOVContext *c, AVIOContext *pb, MOVAtom atom)
498 uint32_t av_unused ctype;
502 if (c->fc->nb_streams < 1) // meta before first trak
505 st = c->fc->streams[c->fc->nb_streams-1];
507 avio_r8(pb); /* version */
508 avio_rb24(pb); /* flags */
511 ctype = avio_rl32(pb);
512 type = avio_rl32(pb); /* component subtype */
514 av_dlog(c->fc, "ctype= %.4s (0x%08x)\n", (char*)&ctype, ctype);
515 av_dlog(c->fc, "stype= %.4s\n", (char*)&type);
517 if (type == MKTAG('v','i','d','e'))
518 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
519 else if (type == MKTAG('s','o','u','n'))
520 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
521 else if (type == MKTAG('m','1','a',' '))
522 st->codec->codec_id = CODEC_ID_MP2;
523 else if ((type == MKTAG('s','u','b','p')) || (type == MKTAG('c','l','c','p')))
524 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
526 avio_rb32(pb); /* component manufacture */
527 avio_rb32(pb); /* component flags */
528 avio_rb32(pb); /* component flags mask */
530 title_size = atom.size - 24;
531 if (title_size > 0) {
532 title_str = av_malloc(title_size + 1); /* Add null terminator */
534 return AVERROR(ENOMEM);
535 avio_read(pb, title_str, title_size);
536 title_str[title_size] = 0;
537 av_dict_set(&st->metadata, "handler_name", title_str, 0);
538 av_freep(&title_str);
544 int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb, MOVAtom atom)
549 if (fc->nb_streams < 1)
551 st = fc->streams[fc->nb_streams-1];
553 avio_rb32(pb); /* version + flags */
554 ff_mp4_read_descr(fc, pb, &tag);
555 if (tag == MP4ESDescrTag) {
556 ff_mp4_parse_es_descr(pb, NULL);
558 avio_rb16(pb); /* ID */
560 ff_mp4_read_descr(fc, pb, &tag);
561 if (tag == MP4DecConfigDescrTag)
562 ff_mp4_read_dec_config_descr(fc, st, pb);
566 static int mov_read_esds(MOVContext *c, AVIOContext *pb, MOVAtom atom)
568 return ff_mov_read_esds(c->fc, pb, atom);
571 static int mov_read_dac3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
574 int ac3info, acmod, lfeon, bsmod;
576 if (c->fc->nb_streams < 1)
578 st = c->fc->streams[c->fc->nb_streams-1];
580 ac3info = avio_rb24(pb);
581 bsmod = (ac3info >> 14) & 0x7;
582 acmod = (ac3info >> 11) & 0x7;
583 lfeon = (ac3info >> 10) & 0x1;
584 st->codec->channels = ((int[]){2,1,2,3,3,4,4,5})[acmod] + lfeon;
585 st->codec->audio_service_type = bsmod;
586 if (st->codec->channels > 1 && bsmod == 0x7)
587 st->codec->audio_service_type = AV_AUDIO_SERVICE_TYPE_KARAOKE;
592 static int mov_read_wfex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
596 if (c->fc->nb_streams < 1)
598 st = c->fc->streams[c->fc->nb_streams-1];
600 ff_get_wav_header(pb, st->codec, atom.size);
605 static int mov_read_pasp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
607 const int num = avio_rb32(pb);
608 const int den = avio_rb32(pb);
611 if (c->fc->nb_streams < 1)
613 st = c->fc->streams[c->fc->nb_streams-1];
615 if ((st->sample_aspect_ratio.den != 1 || st->sample_aspect_ratio.num) && // default
616 (den != st->sample_aspect_ratio.den || num != st->sample_aspect_ratio.num)) {
617 av_log(c->fc, AV_LOG_WARNING,
618 "sample aspect ratio already set to %d:%d, ignoring 'pasp' atom (%d:%d)\n",
619 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
621 } else if (den != 0) {
622 st->sample_aspect_ratio.num = num;
623 st->sample_aspect_ratio.den = den;
628 /* this atom contains actual media data */
629 static int mov_read_mdat(MOVContext *c, AVIOContext *pb, MOVAtom atom)
631 if (atom.size == 0) /* wrong one (MP4) */
634 return 0; /* now go for moov */
637 /* read major brand, minor version and compatible brands and store them as metadata */
638 static int mov_read_ftyp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
642 char minor_ver_str[11]; /* 32 bit integer -> 10 digits + null */
643 char* comp_brands_str;
644 uint8_t type[5] = {0};
646 avio_read(pb, type, 4);
647 if (strcmp(type, "qt "))
649 av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
650 av_dict_set(&c->fc->metadata, "major_brand", type, 0);
651 minor_ver = avio_rb32(pb); /* minor version */
652 snprintf(minor_ver_str, sizeof(minor_ver_str), "%d", minor_ver);
653 av_dict_set(&c->fc->metadata, "minor_version", minor_ver_str, 0);
655 comp_brand_size = atom.size - 8;
656 if (comp_brand_size < 0)
658 comp_brands_str = av_malloc(comp_brand_size + 1); /* Add null terminator */
659 if (!comp_brands_str)
660 return AVERROR(ENOMEM);
661 avio_read(pb, comp_brands_str, comp_brand_size);
662 comp_brands_str[comp_brand_size] = 0;
663 av_dict_set(&c->fc->metadata, "compatible_brands", comp_brands_str, 0);
664 av_freep(&comp_brands_str);
669 /* this atom should contain all header atoms */
670 static int mov_read_moov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
672 if (mov_read_default(c, pb, atom) < 0)
674 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
675 /* so we don't parse the whole file if over a network */
677 return 0; /* now go for mdat */
680 static int mov_read_moof(MOVContext *c, AVIOContext *pb, MOVAtom atom)
682 c->fragment.moof_offset = avio_tell(pb) - 8;
683 av_dlog(c->fc, "moof offset %"PRIx64"\n", c->fragment.moof_offset);
684 return mov_read_default(c, pb, atom);
687 static void mov_metadata_creation_time(AVDictionary **metadata, time_t time)
692 time -= 2082844800; /* seconds between 1904-01-01 and Epoch */
695 strftime(buffer, sizeof(buffer), "%Y-%m-%d %H:%M:%S", ptm);
696 av_dict_set(metadata, "creation_time", buffer, 0);
700 static int mov_read_mdhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
703 MOVStreamContext *sc;
705 char language[4] = {0};
707 time_t creation_time;
709 if (c->fc->nb_streams < 1)
711 st = c->fc->streams[c->fc->nb_streams-1];
714 version = avio_r8(pb);
716 return -1; /* unsupported */
718 avio_rb24(pb); /* flags */
720 creation_time = avio_rb64(pb);
723 creation_time = avio_rb32(pb);
724 avio_rb32(pb); /* modification time */
726 mov_metadata_creation_time(&st->metadata, creation_time);
728 sc->time_scale = avio_rb32(pb);
729 st->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
731 lang = avio_rb16(pb); /* language */
732 if (ff_mov_lang_to_iso639(lang, language))
733 av_dict_set(&st->metadata, "language", language, 0);
734 avio_rb16(pb); /* quality */
739 static int mov_read_mvhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
741 time_t creation_time;
742 int version = avio_r8(pb); /* version */
743 avio_rb24(pb); /* flags */
746 creation_time = avio_rb64(pb);
749 creation_time = avio_rb32(pb);
750 avio_rb32(pb); /* modification time */
752 mov_metadata_creation_time(&c->fc->metadata, creation_time);
753 c->time_scale = avio_rb32(pb); /* time scale */
755 av_dlog(c->fc, "time scale = %i\n", c->time_scale);
757 c->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
758 avio_rb32(pb); /* preferred scale */
760 avio_rb16(pb); /* preferred volume */
762 avio_skip(pb, 10); /* reserved */
764 avio_skip(pb, 36); /* display matrix */
766 avio_rb32(pb); /* preview time */
767 avio_rb32(pb); /* preview duration */
768 avio_rb32(pb); /* poster time */
769 avio_rb32(pb); /* selection time */
770 avio_rb32(pb); /* selection duration */
771 avio_rb32(pb); /* current time */
772 avio_rb32(pb); /* next track ID */
777 static int mov_read_smi(MOVContext *c, AVIOContext *pb, MOVAtom atom)
781 if (c->fc->nb_streams < 1)
783 st = c->fc->streams[c->fc->nb_streams-1];
785 if ((uint64_t)atom.size > (1<<30))
788 // currently SVQ3 decoder expect full STSD header - so let's fake it
789 // this should be fixed and just SMI header should be passed
790 av_free(st->codec->extradata);
791 st->codec->extradata = av_mallocz(atom.size + 0x5a + FF_INPUT_BUFFER_PADDING_SIZE);
792 if (!st->codec->extradata)
793 return AVERROR(ENOMEM);
794 st->codec->extradata_size = 0x5a + atom.size;
795 memcpy(st->codec->extradata, "SVQ3", 4); // fake
796 avio_read(pb, st->codec->extradata + 0x5a, atom.size);
797 av_dlog(c->fc, "Reading SMI %"PRId64" %s\n", atom.size, st->codec->extradata + 0x5a);
801 static int mov_read_enda(MOVContext *c, AVIOContext *pb, MOVAtom atom)
806 if (c->fc->nb_streams < 1)
808 st = c->fc->streams[c->fc->nb_streams-1];
810 little_endian = avio_rb16(pb) & 0xFF;
811 av_dlog(c->fc, "enda %d\n", little_endian);
812 if (little_endian == 1) {
813 switch (st->codec->codec_id) {
814 case CODEC_ID_PCM_S24BE:
815 st->codec->codec_id = CODEC_ID_PCM_S24LE;
817 case CODEC_ID_PCM_S32BE:
818 st->codec->codec_id = CODEC_ID_PCM_S32LE;
820 case CODEC_ID_PCM_F32BE:
821 st->codec->codec_id = CODEC_ID_PCM_F32LE;
823 case CODEC_ID_PCM_F64BE:
824 st->codec->codec_id = CODEC_ID_PCM_F64LE;
833 /* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
834 static int mov_read_extradata(MOVContext *c, AVIOContext *pb, MOVAtom atom,
835 enum CodecID codec_id)
841 if (c->fc->nb_streams < 1) // will happen with jp2 files
843 st= c->fc->streams[c->fc->nb_streams-1];
845 if (st->codec->codec_id != codec_id)
846 return 0; /* unexpected codec_id - don't mess with extradata */
848 size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
849 if (size > INT_MAX || (uint64_t)atom.size > INT_MAX)
851 buf= av_realloc(st->codec->extradata, size);
854 st->codec->extradata= buf;
855 buf+= st->codec->extradata_size;
856 st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE;
857 AV_WB32( buf , atom.size + 8);
858 AV_WL32( buf + 4, atom.type);
859 avio_read(pb, buf + 8, atom.size);
863 /* wrapper functions for reading ALAC/AVS/MJPEG/MJPEG2000 extradata atoms only for those codecs */
864 static int mov_read_alac(MOVContext *c, AVIOContext *pb, MOVAtom atom)
866 return mov_read_extradata(c, pb, atom, CODEC_ID_ALAC);
869 static int mov_read_avss(MOVContext *c, AVIOContext *pb, MOVAtom atom)
871 return mov_read_extradata(c, pb, atom, CODEC_ID_AVS);
874 static int mov_read_fiel(MOVContext *c, AVIOContext *pb, MOVAtom atom)
876 return mov_read_extradata(c, pb, atom, CODEC_ID_MJPEG);
879 static int mov_read_jp2h(MOVContext *c, AVIOContext *pb, MOVAtom atom)
881 return mov_read_extradata(c, pb, atom, CODEC_ID_JPEG2000);
884 static int mov_read_wave(MOVContext *c, AVIOContext *pb, MOVAtom atom)
888 if (c->fc->nb_streams < 1)
890 st = c->fc->streams[c->fc->nb_streams-1];
892 if ((uint64_t)atom.size > (1<<30))
895 if (st->codec->codec_id == CODEC_ID_QDM2 || st->codec->codec_id == CODEC_ID_QDMC) {
896 // pass all frma atom to codec, needed at least for QDMC and QDM2
897 av_free(st->codec->extradata);
898 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
899 if (!st->codec->extradata)
900 return AVERROR(ENOMEM);
901 st->codec->extradata_size = atom.size;
902 avio_read(pb, st->codec->extradata, atom.size);
903 } else if (atom.size > 8) { /* to read frma, esds atoms */
904 if (mov_read_default(c, pb, atom) < 0)
907 avio_skip(pb, atom.size);
912 * This function reads atom content and puts data in extradata without tag
913 * nor size unlike mov_read_extradata.
915 static int mov_read_glbl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
919 if (c->fc->nb_streams < 1)
921 st = c->fc->streams[c->fc->nb_streams-1];
923 if ((uint64_t)atom.size > (1<<30))
926 av_free(st->codec->extradata);
927 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
928 if (!st->codec->extradata)
929 return AVERROR(ENOMEM);
930 st->codec->extradata_size = atom.size;
931 avio_read(pb, st->codec->extradata, atom.size);
936 * An strf atom is a BITMAPINFOHEADER struct. This struct is 40 bytes itself,
937 * but can have extradata appended at the end after the 40 bytes belonging
940 static int mov_read_strf(MOVContext *c, AVIOContext *pb, MOVAtom atom)
944 if (c->fc->nb_streams < 1)
948 st = c->fc->streams[c->fc->nb_streams-1];
950 if ((uint64_t)atom.size > (1<<30))
953 av_free(st->codec->extradata);
954 st->codec->extradata = av_mallocz(atom.size - 40 + FF_INPUT_BUFFER_PADDING_SIZE);
955 if (!st->codec->extradata)
956 return AVERROR(ENOMEM);
957 st->codec->extradata_size = atom.size - 40;
959 avio_read(pb, st->codec->extradata, atom.size - 40);
963 static int mov_read_stco(MOVContext *c, AVIOContext *pb, MOVAtom atom)
966 MOVStreamContext *sc;
967 unsigned int i, entries;
969 if (c->fc->nb_streams < 1)
971 st = c->fc->streams[c->fc->nb_streams-1];
974 avio_r8(pb); /* version */
975 avio_rb24(pb); /* flags */
977 entries = avio_rb32(pb);
979 if (entries >= UINT_MAX/sizeof(int64_t))
982 sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
983 if (!sc->chunk_offsets)
984 return AVERROR(ENOMEM);
985 sc->chunk_count = entries;
987 if (atom.type == MKTAG('s','t','c','o'))
988 for (i=0; i<entries; i++)
989 sc->chunk_offsets[i] = avio_rb32(pb);
990 else if (atom.type == MKTAG('c','o','6','4'))
991 for (i=0; i<entries; i++)
992 sc->chunk_offsets[i] = avio_rb64(pb);
1000 * Compute codec id for 'lpcm' tag.
1001 * See CoreAudioTypes and AudioStreamBasicDescription at Apple.
1003 enum CodecID ff_mov_get_lpcm_codec_id(int bps, int flags)
1005 if (flags & 1) { // floating point
1006 if (flags & 2) { // big endian
1007 if (bps == 32) return CODEC_ID_PCM_F32BE;
1008 else if (bps == 64) return CODEC_ID_PCM_F64BE;
1010 if (bps == 32) return CODEC_ID_PCM_F32LE;
1011 else if (bps == 64) return CODEC_ID_PCM_F64LE;
1017 if (flags & 4) return CODEC_ID_PCM_S8;
1018 else return CODEC_ID_PCM_U8;
1019 else if (bps == 16) return CODEC_ID_PCM_S16BE;
1020 else if (bps == 24) return CODEC_ID_PCM_S24BE;
1021 else if (bps == 32) return CODEC_ID_PCM_S32BE;
1024 if (flags & 4) return CODEC_ID_PCM_S8;
1025 else return CODEC_ID_PCM_U8;
1026 else if (bps == 16) return CODEC_ID_PCM_S16LE;
1027 else if (bps == 24) return CODEC_ID_PCM_S24LE;
1028 else if (bps == 32) return CODEC_ID_PCM_S32LE;
1031 return CODEC_ID_NONE;
1034 int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries)
1037 MOVStreamContext *sc;
1038 int j, pseudo_stream_id;
1040 if (c->fc->nb_streams < 1)
1042 st = c->fc->streams[c->fc->nb_streams-1];
1045 for (pseudo_stream_id=0; pseudo_stream_id<entries; pseudo_stream_id++) {
1046 //Parsing Sample description table
1049 MOVAtom a = { AV_RL32("stsd") };
1050 int64_t start_pos = avio_tell(pb);
1051 int size = avio_rb32(pb); /* size */
1052 uint32_t format = avio_rl32(pb); /* data format */
1055 avio_rb32(pb); /* reserved */
1056 avio_rb16(pb); /* reserved */
1057 dref_id = avio_rb16(pb);
1060 if (st->codec->codec_tag &&
1061 st->codec->codec_tag != format &&
1062 (c->fc->video_codec_id ? ff_codec_get_id(codec_movvideo_tags, format) != c->fc->video_codec_id
1063 : st->codec->codec_tag != MKTAG('j','p','e','g'))
1065 /* Multiple fourcc, we skip JPEG. This is not correct, we should
1066 * export it as a separate AVStream but this needs a few changes
1067 * in the MOV demuxer, patch welcome. */
1069 av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n");
1070 avio_skip(pb, size - (avio_tell(pb) - start_pos));
1073 /* we cannot demux concatenated h264 streams because of different extradata */
1074 if (st->codec->codec_tag && st->codec->codec_tag == AV_RL32("avc1"))
1076 sc->pseudo_stream_id = st->codec->codec_tag ? -1 : pseudo_stream_id;
1077 sc->dref_id= dref_id;
1079 st->codec->codec_tag = format;
1080 id = ff_codec_get_id(codec_movaudio_tags, format);
1081 if (id<=0 && ((format&0xFFFF) == 'm'+('s'<<8) || (format&0xFFFF) == 'T'+('S'<<8)))
1082 id = ff_codec_get_id(ff_codec_wav_tags, av_bswap32(format)&0xFFFF);
1084 if (st->codec->codec_type != AVMEDIA_TYPE_VIDEO && id > 0) {
1085 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
1086 } else if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO && /* do not overwrite codec type */
1087 format && format != MKTAG('m','p','4','s')) { /* skip old asf mpeg4 tag */
1088 id = ff_codec_get_id(codec_movvideo_tags, format);
1090 id = ff_codec_get_id(ff_codec_bmp_tags, format);
1092 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
1093 else if (st->codec->codec_type == AVMEDIA_TYPE_DATA){
1094 id = ff_codec_get_id(ff_codec_movsubtitle_tags, format);
1096 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
1100 av_dlog(c->fc, "size=%d 4CC= %c%c%c%c codec_type=%d\n", size,
1101 (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff,
1102 (format >> 24) & 0xff, st->codec->codec_type);
1104 if (st->codec->codec_type==AVMEDIA_TYPE_VIDEO) {
1105 unsigned int color_depth, len;
1106 int color_greyscale;
1108 st->codec->codec_id = id;
1109 avio_rb16(pb); /* version */
1110 avio_rb16(pb); /* revision level */
1111 avio_rb32(pb); /* vendor */
1112 avio_rb32(pb); /* temporal quality */
1113 avio_rb32(pb); /* spatial quality */
1115 st->codec->width = avio_rb16(pb); /* width */
1116 st->codec->height = avio_rb16(pb); /* height */
1118 avio_rb32(pb); /* horiz resolution */
1119 avio_rb32(pb); /* vert resolution */
1120 avio_rb32(pb); /* data size, always 0 */
1121 avio_rb16(pb); /* frames per samples */
1123 len = avio_r8(pb); /* codec name, pascal string */
1126 mov_read_mac_string(c, pb, len, st->codec->codec_name, 32);
1128 avio_skip(pb, 31 - len);
1129 /* codec_tag YV12 triggers an UV swap in rawdec.c */
1130 if (!memcmp(st->codec->codec_name, "Planar Y'CbCr 8-bit 4:2:0", 25))
1131 st->codec->codec_tag=MKTAG('I', '4', '2', '0');
1133 st->codec->bits_per_coded_sample = avio_rb16(pb); /* depth */
1134 st->codec->color_table_id = avio_rb16(pb); /* colortable id */
1135 av_dlog(c->fc, "depth %d, ctab id %d\n",
1136 st->codec->bits_per_coded_sample, st->codec->color_table_id);
1137 /* figure out the palette situation */
1138 color_depth = st->codec->bits_per_coded_sample & 0x1F;
1139 color_greyscale = st->codec->bits_per_coded_sample & 0x20;
1141 /* if the depth is 2, 4, or 8 bpp, file is palettized */
1142 if ((color_depth == 2) || (color_depth == 4) ||
1143 (color_depth == 8)) {
1144 /* for palette traversal */
1145 unsigned int color_start, color_count, color_end;
1146 unsigned char r, g, b;
1148 if (color_greyscale) {
1149 int color_index, color_dec;
1150 /* compute the greyscale palette */
1151 st->codec->bits_per_coded_sample = color_depth;
1152 color_count = 1 << color_depth;
1154 color_dec = 256 / (color_count - 1);
1155 for (j = 0; j < color_count; j++) {
1156 if (id == CODEC_ID_CINEPAK){
1157 r = g = b = color_count - 1 - color_index;
1159 r = g = b = color_index;
1161 (r << 16) | (g << 8) | (b);
1162 color_index -= color_dec;
1163 if (color_index < 0)
1166 } else if (st->codec->color_table_id) {
1167 const uint8_t *color_table;
1168 /* if flag bit 3 is set, use the default palette */
1169 color_count = 1 << color_depth;
1170 if (color_depth == 2)
1171 color_table = ff_qt_default_palette_4;
1172 else if (color_depth == 4)
1173 color_table = ff_qt_default_palette_16;
1175 color_table = ff_qt_default_palette_256;
1177 for (j = 0; j < color_count; j++) {
1178 r = color_table[j * 3 + 0];
1179 g = color_table[j * 3 + 1];
1180 b = color_table[j * 3 + 2];
1182 (r << 16) | (g << 8) | (b);
1185 /* load the palette from the file */
1186 color_start = avio_rb32(pb);
1187 color_count = avio_rb16(pb);
1188 color_end = avio_rb16(pb);
1189 if ((color_start <= 255) &&
1190 (color_end <= 255)) {
1191 for (j = color_start; j <= color_end; j++) {
1192 /* each R, G, or B component is 16 bits;
1193 * only use the top 8 bits; skip alpha bytes
1204 (r << 16) | (g << 8) | (b);
1208 sc->has_palette = 1;
1210 } else if (st->codec->codec_type==AVMEDIA_TYPE_AUDIO) {
1211 int bits_per_sample, flags;
1212 uint16_t version = avio_rb16(pb);
1214 st->codec->codec_id = id;
1215 avio_rb16(pb); /* revision level */
1216 avio_rb32(pb); /* vendor */
1218 st->codec->channels = avio_rb16(pb); /* channel count */
1219 av_dlog(c->fc, "audio channels %d\n", st->codec->channels);
1220 st->codec->bits_per_coded_sample = avio_rb16(pb); /* sample size */
1222 sc->audio_cid = avio_rb16(pb);
1223 avio_rb16(pb); /* packet size = 0 */
1225 st->codec->sample_rate = ((avio_rb32(pb) >> 16));
1227 //Read QT version 1 fields. In version 0 these do not exist.
1228 av_dlog(c->fc, "version =%d, isom =%d\n",version,c->isom);
1231 sc->samples_per_frame = avio_rb32(pb);
1232 avio_rb32(pb); /* bytes per packet */
1233 sc->bytes_per_frame = avio_rb32(pb);
1234 avio_rb32(pb); /* bytes per sample */
1235 } else if (version==2) {
1236 avio_rb32(pb); /* sizeof struct only */
1237 st->codec->sample_rate = av_int2dbl(avio_rb64(pb)); /* float 64 */
1238 st->codec->channels = avio_rb32(pb);
1239 avio_rb32(pb); /* always 0x7F000000 */
1240 st->codec->bits_per_coded_sample = avio_rb32(pb); /* bits per channel if sound is uncompressed */
1241 flags = avio_rb32(pb); /* lpcm format specific flag */
1242 sc->bytes_per_frame = avio_rb32(pb); /* bytes per audio packet if constant */
1243 sc->samples_per_frame = avio_rb32(pb); /* lpcm frames per audio packet if constant */
1244 if (format == MKTAG('l','p','c','m'))
1245 st->codec->codec_id = ff_mov_get_lpcm_codec_id(st->codec->bits_per_coded_sample, flags);
1249 switch (st->codec->codec_id) {
1250 case CODEC_ID_PCM_S8:
1251 case CODEC_ID_PCM_U8:
1252 if (st->codec->bits_per_coded_sample == 16)
1253 st->codec->codec_id = CODEC_ID_PCM_S16BE;
1255 case CODEC_ID_PCM_S16LE:
1256 case CODEC_ID_PCM_S16BE:
1257 if (st->codec->bits_per_coded_sample == 8)
1258 st->codec->codec_id = CODEC_ID_PCM_S8;
1259 else if (st->codec->bits_per_coded_sample == 24)
1260 st->codec->codec_id =
1261 st->codec->codec_id == CODEC_ID_PCM_S16BE ?
1262 CODEC_ID_PCM_S24BE : CODEC_ID_PCM_S24LE;
1264 /* set values for old format before stsd version 1 appeared */
1265 case CODEC_ID_MACE3:
1266 sc->samples_per_frame = 6;
1267 sc->bytes_per_frame = 2*st->codec->channels;
1269 case CODEC_ID_MACE6:
1270 sc->samples_per_frame = 6;
1271 sc->bytes_per_frame = 1*st->codec->channels;
1273 case CODEC_ID_ADPCM_IMA_QT:
1274 sc->samples_per_frame = 64;
1275 sc->bytes_per_frame = 34*st->codec->channels;
1278 sc->samples_per_frame = 160;
1279 sc->bytes_per_frame = 33;
1285 bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
1286 if (bits_per_sample) {
1287 st->codec->bits_per_coded_sample = bits_per_sample;
1288 sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
1290 } else if (st->codec->codec_type==AVMEDIA_TYPE_SUBTITLE){
1291 // ttxt stsd contains display flags, justification, background
1292 // color, fonts, and default styles, so fake an atom to read it
1293 MOVAtom fake_atom = { .size = size - (avio_tell(pb) - start_pos) };
1294 if (format != AV_RL32("mp4s")) // mp4s contains a regular esds atom
1295 mov_read_glbl(c, pb, fake_atom);
1296 st->codec->codec_id= id;
1297 st->codec->width = sc->width;
1298 st->codec->height = sc->height;
1300 if (st->codec->codec_tag == MKTAG('t','m','c','d')) {
1302 avio_rb32(pb); /* reserved */
1303 val = avio_rb32(pb); /* flags */
1305 st->codec->flags2 |= CODEC_FLAG2_DROP_FRAME_TIMECODE;
1308 st->codec->time_base.den = avio_r8(pb);
1309 st->codec->time_base.num = 1;
1311 /* other codec type, just skip (rtp, mp4s, ...) */
1312 avio_skip(pb, size - (avio_tell(pb) - start_pos));
1314 /* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */
1315 a.size = size - (avio_tell(pb) - start_pos);
1317 if (mov_read_default(c, pb, a) < 0)
1319 } else if (a.size > 0)
1320 avio_skip(pb, a.size);
1323 if (st->codec->codec_type==AVMEDIA_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1)
1324 st->codec->sample_rate= sc->time_scale;
1326 /* special codec parameters handling */
1327 switch (st->codec->codec_id) {
1328 #if CONFIG_DV_DEMUXER
1329 case CODEC_ID_DVAUDIO:
1330 c->dv_fctx = avformat_alloc_context();
1331 c->dv_demux = avpriv_dv_init_demux(c->dv_fctx);
1333 av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
1336 sc->dv_audio_container = 1;
1337 st->codec->codec_id = CODEC_ID_PCM_S16LE;
1340 /* no ifdef since parameters are always those */
1341 case CODEC_ID_QCELP:
1342 // force sample rate for qcelp when not stored in mov
1343 if (st->codec->codec_tag != MKTAG('Q','c','l','p'))
1344 st->codec->sample_rate = 8000;
1345 st->codec->frame_size= 160;
1346 st->codec->channels= 1; /* really needed */
1348 case CODEC_ID_AMR_NB:
1349 st->codec->channels= 1; /* really needed */
1350 /* force sample rate for amr, stsd in 3gp does not store sample rate */
1351 st->codec->sample_rate = 8000;
1352 /* force frame_size, too, samples_per_frame isn't always set properly */
1353 st->codec->frame_size = 160;
1355 case CODEC_ID_AMR_WB:
1356 st->codec->channels = 1;
1357 st->codec->sample_rate = 16000;
1358 st->codec->frame_size = 320;
1362 st->codec->codec_type = AVMEDIA_TYPE_AUDIO; /* force type after stsd for m1a hdlr */
1363 st->need_parsing = AVSTREAM_PARSE_FULL;
1366 case CODEC_ID_ADPCM_MS:
1367 case CODEC_ID_ADPCM_IMA_WAV:
1368 st->codec->frame_size = sc->samples_per_frame;
1369 st->codec->block_align = sc->bytes_per_frame;
1372 if (st->codec->extradata_size == 36) {
1373 st->codec->frame_size = AV_RB32(st->codec->extradata+12);
1374 st->codec->channels = AV_RB8 (st->codec->extradata+21);
1375 st->codec->sample_rate = AV_RB32(st->codec->extradata+32);
1379 st->need_parsing = AVSTREAM_PARSE_FULL;
1381 case CODEC_ID_MPEG1VIDEO:
1382 st->need_parsing = AVSTREAM_PARSE_FULL;
1391 static int mov_read_stsd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1395 avio_r8(pb); /* version */
1396 avio_rb24(pb); /* flags */
1397 entries = avio_rb32(pb);
1399 return ff_mov_read_stsd_entries(c, pb, entries);
1402 static int mov_read_stsc(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1405 MOVStreamContext *sc;
1406 unsigned int i, entries;
1408 if (c->fc->nb_streams < 1)
1410 st = c->fc->streams[c->fc->nb_streams-1];
1413 avio_r8(pb); /* version */
1414 avio_rb24(pb); /* flags */
1416 entries = avio_rb32(pb);
1418 av_dlog(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
1420 if (entries >= UINT_MAX / sizeof(*sc->stsc_data))
1422 sc->stsc_data = av_malloc(entries * sizeof(*sc->stsc_data));
1424 return AVERROR(ENOMEM);
1425 sc->stsc_count = entries;
1427 for (i=0; i<entries; i++) {
1428 sc->stsc_data[i].first = avio_rb32(pb);
1429 sc->stsc_data[i].count = avio_rb32(pb);
1430 sc->stsc_data[i].id = avio_rb32(pb);
1435 static int mov_read_stps(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1438 MOVStreamContext *sc;
1439 unsigned i, entries;
1441 if (c->fc->nb_streams < 1)
1443 st = c->fc->streams[c->fc->nb_streams-1];
1446 avio_rb32(pb); // version + flags
1448 entries = avio_rb32(pb);
1449 if (entries >= UINT_MAX / sizeof(*sc->stps_data))
1451 sc->stps_data = av_malloc(entries * sizeof(*sc->stps_data));
1453 return AVERROR(ENOMEM);
1454 sc->stps_count = entries;
1456 for (i = 0; i < entries; i++) {
1457 sc->stps_data[i] = avio_rb32(pb);
1458 //av_dlog(c->fc, "stps %d\n", sc->stps_data[i]);
1464 static int mov_read_stss(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1467 MOVStreamContext *sc;
1468 unsigned int i, entries;
1470 if (c->fc->nb_streams < 1)
1472 st = c->fc->streams[c->fc->nb_streams-1];
1475 avio_r8(pb); /* version */
1476 avio_rb24(pb); /* flags */
1478 entries = avio_rb32(pb);
1480 av_dlog(c->fc, "keyframe_count = %d\n", entries);
1482 if (entries >= UINT_MAX / sizeof(int))
1484 sc->keyframes = av_malloc(entries * sizeof(int));
1486 return AVERROR(ENOMEM);
1487 sc->keyframe_count = entries;
1489 for (i=0; i<entries; i++) {
1490 sc->keyframes[i] = avio_rb32(pb);
1491 //av_dlog(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
1496 static int mov_read_stsz(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1499 MOVStreamContext *sc;
1500 unsigned int i, entries, sample_size, field_size, num_bytes;
1504 if (c->fc->nb_streams < 1)
1506 st = c->fc->streams[c->fc->nb_streams-1];
1509 avio_r8(pb); /* version */
1510 avio_rb24(pb); /* flags */
1512 if (atom.type == MKTAG('s','t','s','z')) {
1513 sample_size = avio_rb32(pb);
1514 if (!sc->sample_size) /* do not overwrite value computed in stsd */
1515 sc->sample_size = sample_size;
1519 avio_rb24(pb); /* reserved */
1520 field_size = avio_r8(pb);
1522 entries = avio_rb32(pb);
1524 av_dlog(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, entries);
1526 sc->sample_count = entries;
1530 if (field_size != 4 && field_size != 8 && field_size != 16 && field_size != 32) {
1531 av_log(c->fc, AV_LOG_ERROR, "Invalid sample field size %d\n", field_size);
1535 if (entries >= UINT_MAX / sizeof(int) || entries >= (UINT_MAX - 4) / field_size)
1537 sc->sample_sizes = av_malloc(entries * sizeof(int));
1538 if (!sc->sample_sizes)
1539 return AVERROR(ENOMEM);
1541 num_bytes = (entries*field_size+4)>>3;
1543 buf = av_malloc(num_bytes+FF_INPUT_BUFFER_PADDING_SIZE);
1545 av_freep(&sc->sample_sizes);
1546 return AVERROR(ENOMEM);
1549 if (avio_read(pb, buf, num_bytes) < num_bytes) {
1550 av_freep(&sc->sample_sizes);
1555 init_get_bits(&gb, buf, 8*num_bytes);
1557 for (i=0; i<entries; i++)
1558 sc->sample_sizes[i] = get_bits_long(&gb, field_size);
1564 static int mov_read_stts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1567 MOVStreamContext *sc;
1568 unsigned int i, entries;
1570 int64_t total_sample_count=0;
1572 if (c->fc->nb_streams < 1)
1574 st = c->fc->streams[c->fc->nb_streams-1];
1577 avio_r8(pb); /* version */
1578 avio_rb24(pb); /* flags */
1579 entries = avio_rb32(pb);
1581 av_dlog(c->fc, "track[%i].stts.entries = %i\n",
1582 c->fc->nb_streams-1, entries);
1584 if (entries >= UINT_MAX / sizeof(*sc->stts_data))
1587 sc->stts_data = av_malloc(entries * sizeof(*sc->stts_data));
1589 return AVERROR(ENOMEM);
1591 sc->stts_count = entries;
1593 for (i=0; i<entries; i++) {
1594 int sample_duration;
1597 sample_count=avio_rb32(pb);
1598 sample_duration = avio_rb32(pb);
1599 /* sample_duration < 0 is invalid based on the spec */
1600 if (sample_duration < 0) {
1601 av_log(c->fc, AV_LOG_ERROR, "Invalid SampleDelta in STTS %d", sample_duration);
1602 sample_duration = 1;
1604 sc->stts_data[i].count= sample_count;
1605 sc->stts_data[i].duration= sample_duration;
1607 av_dlog(c->fc, "sample_count=%d, sample_duration=%d\n",
1608 sample_count, sample_duration);
1610 duration+=(int64_t)sample_duration*sample_count;
1611 total_sample_count+=sample_count;
1614 st->nb_frames= total_sample_count;
1616 st->duration= duration;
1620 static int mov_read_ctts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1623 MOVStreamContext *sc;
1624 unsigned int i, entries;
1626 if (c->fc->nb_streams < 1)
1628 st = c->fc->streams[c->fc->nb_streams-1];
1631 avio_r8(pb); /* version */
1632 avio_rb24(pb); /* flags */
1633 entries = avio_rb32(pb);
1635 av_dlog(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
1637 if (entries >= UINT_MAX / sizeof(*sc->ctts_data))
1639 sc->ctts_data = av_malloc(entries * sizeof(*sc->ctts_data));
1641 return AVERROR(ENOMEM);
1642 sc->ctts_count = entries;
1644 for (i=0; i<entries; i++) {
1645 int count =avio_rb32(pb);
1646 int duration =avio_rb32(pb);
1648 sc->ctts_data[i].count = count;
1649 sc->ctts_data[i].duration= duration;
1650 if (duration < 0 && i+2<entries)
1651 sc->dts_shift = FFMAX(sc->dts_shift, -duration);
1654 av_dlog(c->fc, "dts shift %d\n", sc->dts_shift);
1659 static void mov_build_index(MOVContext *mov, AVStream *st)
1661 MOVStreamContext *sc = st->priv_data;
1662 int64_t current_offset;
1663 int64_t current_dts = 0;
1664 unsigned int stts_index = 0;
1665 unsigned int stsc_index = 0;
1666 unsigned int stss_index = 0;
1667 unsigned int stps_index = 0;
1669 uint64_t stream_size = 0;
1671 /* adjust first dts according to edit list */
1672 if ((sc->empty_duration || sc->start_time) && mov->time_scale > 0) {
1673 if (sc->empty_duration)
1674 sc->empty_duration = av_rescale(sc->empty_duration, sc->time_scale, mov->time_scale);
1675 sc->time_offset = sc->start_time - sc->empty_duration;
1676 current_dts = -sc->time_offset;
1677 if (sc->ctts_data && sc->stts_data &&
1678 sc->ctts_data[0].duration / FFMAX(sc->stts_data[0].duration, 1) > 16) {
1679 /* more than 16 frames delay, dts are likely wrong
1680 this happens with files created by iMovie */
1682 st->codec->has_b_frames = 1;
1686 /* only use old uncompressed audio chunk demuxing when stts specifies it */
1687 if (!(st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
1688 sc->stts_count == 1 && sc->stts_data[0].duration == 1)) {
1689 unsigned int current_sample = 0;
1690 unsigned int stts_sample = 0;
1691 unsigned int sample_size;
1692 unsigned int distance = 0;
1693 int key_off = sc->keyframes && sc->keyframes[0] == 1;
1695 current_dts -= sc->dts_shift;
1697 if (sc->sample_count >= UINT_MAX / sizeof(*st->index_entries))
1699 st->index_entries = av_malloc(sc->sample_count*sizeof(*st->index_entries));
1700 if (!st->index_entries)
1702 st->index_entries_allocated_size = sc->sample_count*sizeof(*st->index_entries);
1704 for (i = 0; i < sc->chunk_count; i++) {
1705 current_offset = sc->chunk_offsets[i];
1706 while (stsc_index + 1 < sc->stsc_count &&
1707 i + 1 == sc->stsc_data[stsc_index + 1].first)
1709 for (j = 0; j < sc->stsc_data[stsc_index].count; j++) {
1711 if (current_sample >= sc->sample_count) {
1712 av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
1716 if (!sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index]) {
1718 if (stss_index + 1 < sc->keyframe_count)
1720 } else if (sc->stps_count && current_sample+key_off == sc->stps_data[stps_index]) {
1722 if (stps_index + 1 < sc->stps_count)
1727 sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
1728 if (sc->pseudo_stream_id == -1 ||
1729 sc->stsc_data[stsc_index].id - 1 == sc->pseudo_stream_id) {
1730 AVIndexEntry *e = &st->index_entries[st->nb_index_entries++];
1731 e->pos = current_offset;
1732 e->timestamp = current_dts;
1733 e->size = sample_size;
1734 e->min_distance = distance;
1735 e->flags = keyframe ? AVINDEX_KEYFRAME : 0;
1736 av_dlog(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
1737 "size %d, distance %d, keyframe %d\n", st->index, current_sample,
1738 current_offset, current_dts, sample_size, distance, keyframe);
1741 current_offset += sample_size;
1742 stream_size += sample_size;
1743 current_dts += sc->stts_data[stts_index].duration;
1747 if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
1753 if (st->duration > 0)
1754 st->codec->bit_rate = stream_size*8*sc->time_scale/st->duration;
1756 unsigned chunk_samples, total = 0;
1758 // compute total chunk count
1759 for (i = 0; i < sc->stsc_count; i++) {
1760 unsigned count, chunk_count;
1762 chunk_samples = sc->stsc_data[i].count;
1763 if (sc->samples_per_frame && chunk_samples % sc->samples_per_frame) {
1764 av_log(mov->fc, AV_LOG_ERROR, "error unaligned chunk\n");
1768 if (sc->samples_per_frame >= 160) { // gsm
1769 count = chunk_samples / sc->samples_per_frame;
1770 } else if (sc->samples_per_frame > 1) {
1771 unsigned samples = (1024/sc->samples_per_frame)*sc->samples_per_frame;
1772 count = (chunk_samples+samples-1) / samples;
1774 count = (chunk_samples+1023) / 1024;
1777 if (i < sc->stsc_count - 1)
1778 chunk_count = sc->stsc_data[i+1].first - sc->stsc_data[i].first;
1780 chunk_count = sc->chunk_count - (sc->stsc_data[i].first - 1);
1781 total += chunk_count * count;
1784 av_dlog(mov->fc, "chunk count %d\n", total);
1785 if (total >= UINT_MAX / sizeof(*st->index_entries))
1787 st->index_entries = av_malloc(total*sizeof(*st->index_entries));
1788 if (!st->index_entries)
1790 st->index_entries_allocated_size = total*sizeof(*st->index_entries);
1793 for (i = 0; i < sc->chunk_count; i++) {
1794 current_offset = sc->chunk_offsets[i];
1795 if (stsc_index + 1 < sc->stsc_count &&
1796 i + 1 == sc->stsc_data[stsc_index + 1].first)
1798 chunk_samples = sc->stsc_data[stsc_index].count;
1800 while (chunk_samples > 0) {
1802 unsigned size, samples;
1804 if (sc->samples_per_frame >= 160) { // gsm
1805 samples = sc->samples_per_frame;
1806 size = sc->bytes_per_frame;
1808 if (sc->samples_per_frame > 1) {
1809 samples = FFMIN((1024 / sc->samples_per_frame)*
1810 sc->samples_per_frame, chunk_samples);
1811 size = (samples / sc->samples_per_frame) * sc->bytes_per_frame;
1813 samples = FFMIN(1024, chunk_samples);
1814 size = samples * sc->sample_size;
1818 if (st->nb_index_entries >= total) {
1819 av_log(mov->fc, AV_LOG_ERROR, "wrong chunk count %d\n", total);
1822 e = &st->index_entries[st->nb_index_entries++];
1823 e->pos = current_offset;
1824 e->timestamp = current_dts;
1826 e->min_distance = 0;
1827 e->flags = AVINDEX_KEYFRAME;
1828 av_dlog(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", "
1829 "size %d, duration %d\n", st->index, i, current_offset, current_dts,
1832 current_offset += size;
1833 current_dts += samples;
1834 chunk_samples -= samples;
1840 static int mov_open_dref(AVIOContext **pb, const char *src, MOVDref *ref,
1841 AVIOInterruptCB *int_cb)
1843 /* try relative path, we do not try the absolute because it can leak information about our
1844 system to an attacker */
1845 if (ref->nlvl_to > 0 && ref->nlvl_from > 0) {
1846 char filename[1024];
1847 const char *src_path;
1850 /* find a source dir */
1851 src_path = strrchr(src, '/');
1857 /* find a next level down to target */
1858 for (i = 0, l = strlen(ref->path) - 1; l >= 0; l--)
1859 if (ref->path[l] == '/') {
1860 if (i == ref->nlvl_to - 1)
1866 /* compose filename if next level down to target was found */
1867 if (i == ref->nlvl_to - 1 && src_path - src < sizeof(filename)) {
1868 memcpy(filename, src, src_path - src);
1869 filename[src_path - src] = 0;
1871 for (i = 1; i < ref->nlvl_from; i++)
1872 av_strlcat(filename, "../", 1024);
1874 av_strlcat(filename, ref->path + l + 1, 1024);
1876 if (!avio_open2(pb, filename, AVIO_FLAG_READ, int_cb, NULL))
1881 return AVERROR(ENOENT);
1884 static int mov_read_trak(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1887 MOVStreamContext *sc;
1890 st = avformat_new_stream(c->fc, NULL);
1891 if (!st) return AVERROR(ENOMEM);
1892 st->id = c->fc->nb_streams;
1893 sc = av_mallocz(sizeof(MOVStreamContext));
1894 if (!sc) return AVERROR(ENOMEM);
1897 st->codec->codec_type = AVMEDIA_TYPE_DATA;
1898 sc->ffindex = st->index;
1900 if ((ret = mov_read_default(c, pb, atom)) < 0)
1904 if (sc->chunk_count && (!sc->stts_count || !sc->stsc_count ||
1905 (!sc->sample_size && !sc->sample_count))) {
1906 av_log(c->fc, AV_LOG_ERROR, "stream %d, missing mandatory atoms, broken header\n",
1911 if (sc->time_scale <= 0) {
1912 av_log(c->fc, AV_LOG_WARNING, "stream %d, timescale not set\n", st->index);
1913 sc->time_scale = c->time_scale;
1914 if (sc->time_scale <= 0)
1918 av_set_pts_info(st, 64, 1, sc->time_scale);
1920 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
1921 !st->codec->frame_size && sc->stts_count == 1) {
1922 st->codec->frame_size = av_rescale(sc->stts_data[0].duration,
1923 st->codec->sample_rate, sc->time_scale);
1924 av_dlog(c->fc, "frame size %d\n", st->codec->frame_size);
1927 mov_build_index(c, st);
1929 if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) {
1930 MOVDref *dref = &sc->drefs[sc->dref_id - 1];
1931 if (mov_open_dref(&sc->pb, c->fc->filename, dref, &c->fc->interrupt_callback) < 0)
1932 av_log(c->fc, AV_LOG_ERROR,
1933 "stream %d, error opening alias: path='%s', dir='%s', "
1934 "filename='%s', volume='%s', nlvl_from=%d, nlvl_to=%d\n",
1935 st->index, dref->path, dref->dir, dref->filename,
1936 dref->volume, dref->nlvl_from, dref->nlvl_to);
1940 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1941 if (!st->sample_aspect_ratio.num &&
1942 (st->codec->width != sc->width || st->codec->height != sc->height)) {
1943 st->sample_aspect_ratio = av_d2q(((double)st->codec->height * sc->width) /
1944 ((double)st->codec->width * sc->height), INT_MAX);
1947 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
1948 sc->time_scale*st->nb_frames, st->duration, INT_MAX);
1950 if (sc->stts_count == 1 || (sc->stts_count == 2 && sc->stts_data[1].count == 1))
1951 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den,
1952 sc->time_scale, sc->stts_data[0].duration, INT_MAX);
1955 switch (st->codec->codec_id) {
1956 #if CONFIG_H261_DECODER
1959 #if CONFIG_H263_DECODER
1962 #if CONFIG_H264_DECODER
1965 #if CONFIG_MPEG4_DECODER
1966 case CODEC_ID_MPEG4:
1968 st->codec->width = 0; /* let decoder init width/height */
1969 st->codec->height= 0;
1973 /* Do not need those anymore. */
1974 av_freep(&sc->chunk_offsets);
1975 av_freep(&sc->stsc_data);
1976 av_freep(&sc->sample_sizes);
1977 av_freep(&sc->keyframes);
1978 av_freep(&sc->stts_data);
1979 av_freep(&sc->stps_data);
1984 static int mov_read_ilst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1987 c->itunes_metadata = 1;
1988 ret = mov_read_default(c, pb, atom);
1989 c->itunes_metadata = 0;
1993 static int mov_read_meta(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1995 while (atom.size > 8) {
1996 uint32_t tag = avio_rl32(pb);
1998 if (tag == MKTAG('h','d','l','r')) {
1999 avio_seek(pb, -8, SEEK_CUR);
2001 return mov_read_default(c, pb, atom);
2007 static int mov_read_tkhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2012 int64_t disp_transform[2];
2013 int display_matrix[3][2];
2015 MOVStreamContext *sc;
2018 if (c->fc->nb_streams < 1)
2020 st = c->fc->streams[c->fc->nb_streams-1];
2023 version = avio_r8(pb);
2024 avio_rb24(pb); /* flags */
2026 MOV_TRACK_ENABLED 0x0001
2027 MOV_TRACK_IN_MOVIE 0x0002
2028 MOV_TRACK_IN_PREVIEW 0x0004
2029 MOV_TRACK_IN_POSTER 0x0008
2036 avio_rb32(pb); /* creation time */
2037 avio_rb32(pb); /* modification time */
2039 st->id = (int)avio_rb32(pb); /* track id (NOT 0 !)*/
2040 avio_rb32(pb); /* reserved */
2042 /* highlevel (considering edits) duration in movie timebase */
2043 (version == 1) ? avio_rb64(pb) : avio_rb32(pb);
2044 avio_rb32(pb); /* reserved */
2045 avio_rb32(pb); /* reserved */
2047 avio_rb16(pb); /* layer */
2048 avio_rb16(pb); /* alternate group */
2049 avio_rb16(pb); /* volume */
2050 avio_rb16(pb); /* reserved */
2052 //read in the display matrix (outlined in ISO 14496-12, Section 6.2.2)
2053 // they're kept in fixed point format through all calculations
2054 // ignore u,v,z b/c we don't need the scale factor to calc aspect ratio
2055 for (i = 0; i < 3; i++) {
2056 display_matrix[i][0] = avio_rb32(pb); // 16.16 fixed point
2057 display_matrix[i][1] = avio_rb32(pb); // 16.16 fixed point
2058 avio_rb32(pb); // 2.30 fixed point (not used)
2061 width = avio_rb32(pb); // 16.16 fixed point track width
2062 height = avio_rb32(pb); // 16.16 fixed point track height
2063 sc->width = width >> 16;
2064 sc->height = height >> 16;
2066 if (display_matrix[0][0] == -65536 && display_matrix[1][1] == -65536) {
2067 av_dict_set(&st->metadata, "rotate", "180", 0);
2070 // transform the display width/height according to the matrix
2071 // skip this if the display matrix is the default identity matrix
2072 // or if it is rotating the picture, ex iPhone 3GS
2073 // to keep the same scale, use [width height 1<<16]
2074 if (width && height &&
2075 ((display_matrix[0][0] != 65536 ||
2076 display_matrix[1][1] != 65536) &&
2077 !display_matrix[0][1] &&
2078 !display_matrix[1][0] &&
2079 !display_matrix[2][0] && !display_matrix[2][1])) {
2080 for (i = 0; i < 2; i++)
2082 (int64_t) width * display_matrix[0][i] +
2083 (int64_t) height * display_matrix[1][i] +
2084 ((int64_t) display_matrix[2][i] << 16);
2086 //sample aspect ratio is new width/height divided by old width/height
2087 st->sample_aspect_ratio = av_d2q(
2088 ((double) disp_transform[0] * height) /
2089 ((double) disp_transform[1] * width), INT_MAX);
2094 static int mov_read_tfhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2096 MOVFragment *frag = &c->fragment;
2097 MOVTrackExt *trex = NULL;
2098 int flags, track_id, i;
2100 avio_r8(pb); /* version */
2101 flags = avio_rb24(pb);
2103 track_id = avio_rb32(pb);
2106 frag->track_id = track_id;
2107 for (i = 0; i < c->trex_count; i++)
2108 if (c->trex_data[i].track_id == frag->track_id) {
2109 trex = &c->trex_data[i];
2113 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding trex\n");
2117 if (flags & 0x01) frag->base_data_offset = avio_rb64(pb);
2118 else frag->base_data_offset = frag->moof_offset;
2119 if (flags & 0x02) frag->stsd_id = avio_rb32(pb);
2120 else frag->stsd_id = trex->stsd_id;
2122 frag->duration = flags & 0x08 ? avio_rb32(pb) : trex->duration;
2123 frag->size = flags & 0x10 ? avio_rb32(pb) : trex->size;
2124 frag->flags = flags & 0x20 ? avio_rb32(pb) : trex->flags;
2125 av_dlog(c->fc, "frag flags 0x%x\n", frag->flags);
2129 static int mov_read_chap(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2131 c->chapter_track = avio_rb32(pb);
2135 static int mov_read_trex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2139 if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data))
2141 trex = av_realloc(c->trex_data, (c->trex_count+1)*sizeof(*c->trex_data));
2143 return AVERROR(ENOMEM);
2144 c->trex_data = trex;
2145 trex = &c->trex_data[c->trex_count++];
2146 avio_r8(pb); /* version */
2147 avio_rb24(pb); /* flags */
2148 trex->track_id = avio_rb32(pb);
2149 trex->stsd_id = avio_rb32(pb);
2150 trex->duration = avio_rb32(pb);
2151 trex->size = avio_rb32(pb);
2152 trex->flags = avio_rb32(pb);
2156 static int mov_read_trun(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2158 MOVFragment *frag = &c->fragment;
2159 AVStream *st = NULL;
2160 MOVStreamContext *sc;
2164 int data_offset = 0;
2165 unsigned entries, first_sample_flags = frag->flags;
2166 int flags, distance, i;
2168 for (i = 0; i < c->fc->nb_streams; i++) {
2169 if (c->fc->streams[i]->id == frag->track_id) {
2170 st = c->fc->streams[i];
2175 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id);
2179 if (sc->pseudo_stream_id+1 != frag->stsd_id)
2181 avio_r8(pb); /* version */
2182 flags = avio_rb24(pb);
2183 entries = avio_rb32(pb);
2184 av_dlog(c->fc, "flags 0x%x entries %d\n", flags, entries);
2186 /* Always assume the presence of composition time offsets.
2187 * Without this assumption, for instance, we cannot deal with a track in fragmented movies that meet the following.
2188 * 1) in the initial movie, there are no samples.
2189 * 2) in the first movie fragment, there is only one sample without composition time offset.
2190 * 3) in the subsequent movie fragments, there are samples with composition time offset. */
2191 if (!sc->ctts_count && sc->sample_count)
2193 /* Complement ctts table if moov atom doesn't have ctts atom. */
2194 ctts_data = av_malloc(sizeof(*sc->ctts_data));
2196 return AVERROR(ENOMEM);
2197 sc->ctts_data = ctts_data;
2198 sc->ctts_data[sc->ctts_count].count = sc->sample_count;
2199 sc->ctts_data[sc->ctts_count].duration = 0;
2202 if ((uint64_t)entries+sc->ctts_count >= UINT_MAX/sizeof(*sc->ctts_data))
2204 ctts_data = av_realloc(sc->ctts_data,
2205 (entries+sc->ctts_count)*sizeof(*sc->ctts_data));
2207 return AVERROR(ENOMEM);
2208 sc->ctts_data = ctts_data;
2210 if (flags & 0x001) data_offset = avio_rb32(pb);
2211 if (flags & 0x004) first_sample_flags = avio_rb32(pb);
2212 dts = st->duration - sc->time_offset;
2213 offset = frag->base_data_offset + data_offset;
2215 av_dlog(c->fc, "first sample flags 0x%x\n", first_sample_flags);
2216 for (i = 0; i < entries; i++) {
2217 unsigned sample_size = frag->size;
2218 int sample_flags = i ? frag->flags : first_sample_flags;
2219 unsigned sample_duration = frag->duration;
2222 if (flags & 0x100) sample_duration = avio_rb32(pb);
2223 if (flags & 0x200) sample_size = avio_rb32(pb);
2224 if (flags & 0x400) sample_flags = avio_rb32(pb);
2225 sc->ctts_data[sc->ctts_count].count = 1;
2226 sc->ctts_data[sc->ctts_count].duration = (flags & 0x800) ? avio_rb32(pb) : 0;
2228 if ((keyframe = st->codec->codec_type == AVMEDIA_TYPE_AUDIO ||
2229 (flags & 0x004 && !i && !sample_flags) || sample_flags & 0x2000000))
2231 av_add_index_entry(st, offset, dts, sample_size, distance,
2232 keyframe ? AVINDEX_KEYFRAME : 0);
2233 av_dlog(c->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
2234 "size %d, distance %d, keyframe %d\n", st->index, sc->sample_count+i,
2235 offset, dts, sample_size, distance, keyframe);
2237 dts += sample_duration;
2238 offset += sample_size;
2240 frag->moof_offset = offset;
2241 st->duration = dts + sc->time_offset;
2245 /* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
2246 /* like the files created with Adobe Premiere 5.0, for samples see */
2247 /* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
2248 static int mov_read_wide(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2253 return 0; /* continue */
2254 if (avio_rb32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
2255 avio_skip(pb, atom.size - 4);
2258 atom.type = avio_rl32(pb);
2260 if (atom.type != MKTAG('m','d','a','t')) {
2261 avio_skip(pb, atom.size);
2264 err = mov_read_mdat(c, pb, atom);
2268 static int mov_read_cmov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2273 uint8_t *moov_data; /* uncompressed data */
2274 long cmov_len, moov_len;
2277 avio_rb32(pb); /* dcom atom */
2278 if (avio_rl32(pb) != MKTAG('d','c','o','m'))
2280 if (avio_rl32(pb) != MKTAG('z','l','i','b')) {
2281 av_log(c->fc, AV_LOG_ERROR, "unknown compression for cmov atom !");
2284 avio_rb32(pb); /* cmvd atom */
2285 if (avio_rl32(pb) != MKTAG('c','m','v','d'))
2287 moov_len = avio_rb32(pb); /* uncompressed size */
2288 cmov_len = atom.size - 6 * 4;
2290 cmov_data = av_malloc(cmov_len);
2292 return AVERROR(ENOMEM);
2293 moov_data = av_malloc(moov_len);
2296 return AVERROR(ENOMEM);
2298 avio_read(pb, cmov_data, cmov_len);
2299 if (uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
2300 goto free_and_return;
2301 if (ffio_init_context(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
2302 goto free_and_return;
2303 atom.type = MKTAG('m','o','o','v');
2304 atom.size = moov_len;
2305 ret = mov_read_default(c, &ctx, atom);
2311 av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
2316 /* edit list atom */
2317 static int mov_read_elst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2319 MOVStreamContext *sc;
2320 int i, edit_count, version, edit_start_index = 0;
2322 if (c->fc->nb_streams < 1)
2324 sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
2326 version = avio_r8(pb); /* version */
2327 avio_rb24(pb); /* flags */
2328 edit_count = avio_rb32(pb); /* entries */
2330 if ((uint64_t)edit_count*12+8 > atom.size)
2333 for (i=0; i<edit_count; i++){
2337 duration = avio_rb64(pb);
2338 time = avio_rb64(pb);
2340 duration = avio_rb32(pb); /* segment duration */
2341 time = (int32_t)avio_rb32(pb); /* media time */
2343 avio_rb32(pb); /* Media rate */
2344 if (i == 0 && time == -1) {
2345 sc->empty_duration = duration;
2346 edit_start_index = 1;
2347 } else if (i == edit_start_index && time >= 0)
2348 sc->start_time = time;
2352 av_log(c->fc, AV_LOG_WARNING, "multiple edit list entries, "
2353 "a/v desync might occur, patch welcome\n");
2355 av_dlog(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, edit_count);
2359 static int mov_read_chan(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2362 return AVERROR_INVALIDDATA;
2364 ff_mov_read_chan(c->fc, atom.size - 4, c->fc->streams[0]->codec);
2368 static const MOVParseTableEntry mov_default_parse_table[] = {
2369 { MKTAG('a','v','s','s'), mov_read_avss },
2370 { MKTAG('c','h','p','l'), mov_read_chpl },
2371 { MKTAG('c','o','6','4'), mov_read_stco },
2372 { MKTAG('c','t','t','s'), mov_read_ctts }, /* composition time to sample */
2373 { MKTAG('d','i','n','f'), mov_read_default },
2374 { MKTAG('d','r','e','f'), mov_read_dref },
2375 { MKTAG('e','d','t','s'), mov_read_default },
2376 { MKTAG('e','l','s','t'), mov_read_elst },
2377 { MKTAG('e','n','d','a'), mov_read_enda },
2378 { MKTAG('f','i','e','l'), mov_read_fiel },
2379 { MKTAG('f','t','y','p'), mov_read_ftyp },
2380 { MKTAG('g','l','b','l'), mov_read_glbl },
2381 { MKTAG('h','d','l','r'), mov_read_hdlr },
2382 { MKTAG('i','l','s','t'), mov_read_ilst },
2383 { MKTAG('j','p','2','h'), mov_read_jp2h },
2384 { MKTAG('m','d','a','t'), mov_read_mdat },
2385 { MKTAG('m','d','h','d'), mov_read_mdhd },
2386 { MKTAG('m','d','i','a'), mov_read_default },
2387 { MKTAG('m','e','t','a'), mov_read_meta },
2388 { MKTAG('m','i','n','f'), mov_read_default },
2389 { MKTAG('m','o','o','f'), mov_read_moof },
2390 { MKTAG('m','o','o','v'), mov_read_moov },
2391 { MKTAG('m','v','e','x'), mov_read_default },
2392 { MKTAG('m','v','h','d'), mov_read_mvhd },
2393 { MKTAG('S','M','I',' '), mov_read_smi }, /* Sorenson extension ??? */
2394 { MKTAG('a','l','a','c'), mov_read_alac }, /* alac specific atom */
2395 { MKTAG('a','v','c','C'), mov_read_glbl },
2396 { MKTAG('p','a','s','p'), mov_read_pasp },
2397 { MKTAG('s','t','b','l'), mov_read_default },
2398 { MKTAG('s','t','c','o'), mov_read_stco },
2399 { MKTAG('s','t','p','s'), mov_read_stps },
2400 { MKTAG('s','t','r','f'), mov_read_strf },
2401 { MKTAG('s','t','s','c'), mov_read_stsc },
2402 { MKTAG('s','t','s','d'), mov_read_stsd }, /* sample description */
2403 { MKTAG('s','t','s','s'), mov_read_stss }, /* sync sample */
2404 { MKTAG('s','t','s','z'), mov_read_stsz }, /* sample size */
2405 { MKTAG('s','t','t','s'), mov_read_stts },
2406 { MKTAG('s','t','z','2'), mov_read_stsz }, /* compact sample size */
2407 { MKTAG('t','k','h','d'), mov_read_tkhd }, /* track header */
2408 { MKTAG('t','f','h','d'), mov_read_tfhd }, /* track fragment header */
2409 { MKTAG('t','r','a','k'), mov_read_trak },
2410 { MKTAG('t','r','a','f'), mov_read_default },
2411 { MKTAG('t','r','e','f'), mov_read_default },
2412 { MKTAG('c','h','a','p'), mov_read_chap },
2413 { MKTAG('t','r','e','x'), mov_read_trex },
2414 { MKTAG('t','r','u','n'), mov_read_trun },
2415 { MKTAG('u','d','t','a'), mov_read_default },
2416 { MKTAG('w','a','v','e'), mov_read_wave },
2417 { MKTAG('e','s','d','s'), mov_read_esds },
2418 { MKTAG('d','a','c','3'), mov_read_dac3 }, /* AC-3 info */
2419 { MKTAG('w','i','d','e'), mov_read_wide }, /* place holder */
2420 { MKTAG('w','f','e','x'), mov_read_wfex },
2421 { MKTAG('c','m','o','v'), mov_read_cmov },
2422 { MKTAG('c','h','a','n'), mov_read_chan },
2426 static int mov_probe(AVProbeData *p)
2428 unsigned int offset;
2432 /* check file header */
2435 /* ignore invalid offset */
2436 if ((offset + 8) > (unsigned int)p->buf_size)
2438 tag = AV_RL32(p->buf + offset + 4);
2440 /* check for obvious tags */
2441 case MKTAG('j','P',' ',' '): /* jpeg 2000 signature */
2442 case MKTAG('m','o','o','v'):
2443 case MKTAG('m','d','a','t'):
2444 case MKTAG('p','n','o','t'): /* detect movs with preview pics like ew.mov and april.mov */
2445 case MKTAG('u','d','t','a'): /* Packet Video PVAuthor adds this and a lot of more junk */
2446 case MKTAG('f','t','y','p'):
2447 return AVPROBE_SCORE_MAX;
2448 /* those are more common words, so rate then a bit less */
2449 case MKTAG('e','d','i','w'): /* xdcam files have reverted first tags */
2450 case MKTAG('w','i','d','e'):
2451 case MKTAG('f','r','e','e'):
2452 case MKTAG('j','u','n','k'):
2453 case MKTAG('p','i','c','t'):
2454 return AVPROBE_SCORE_MAX - 5;
2455 case MKTAG(0x82,0x82,0x7f,0x7d):
2456 case MKTAG('s','k','i','p'):
2457 case MKTAG('u','u','i','d'):
2458 case MKTAG('p','r','f','l'):
2459 offset = AV_RB32(p->buf+offset) + offset;
2460 /* if we only find those cause probedata is too small at least rate them */
2461 score = AVPROBE_SCORE_MAX - 50;
2464 /* unrecognized tag */
2470 // must be done after parsing all trak because there's no order requirement
2471 static void mov_read_chapters(AVFormatContext *s)
2473 MOVContext *mov = s->priv_data;
2474 AVStream *st = NULL;
2475 MOVStreamContext *sc;
2479 for (i = 0; i < s->nb_streams; i++)
2480 if (s->streams[i]->id == mov->chapter_track) {
2485 av_log(s, AV_LOG_ERROR, "Referenced QT chapter track not found\n");
2489 st->discard = AVDISCARD_ALL;
2491 cur_pos = avio_tell(sc->pb);
2493 for (i = 0; i < st->nb_index_entries; i++) {
2494 AVIndexEntry *sample = &st->index_entries[i];
2495 int64_t end = i+1 < st->nb_index_entries ? st->index_entries[i+1].timestamp : st->duration;
2500 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
2501 av_log(s, AV_LOG_ERROR, "Chapter %d not found in file\n", i);
2505 // the first two bytes are the length of the title
2506 len = avio_rb16(sc->pb);
2507 if (len > sample->size-2)
2509 title_len = 2*len + 1;
2510 if (!(title = av_mallocz(title_len)))
2513 // The samples could theoretically be in any encoding if there's an encd
2514 // atom following, but in practice are only utf-8 or utf-16, distinguished
2515 // instead by the presence of a BOM
2519 ch = avio_rb16(sc->pb);
2521 avio_get_str16be(sc->pb, len, title, title_len);
2522 else if (ch == 0xfffe)
2523 avio_get_str16le(sc->pb, len, title, title_len);
2526 if (len == 1 || len == 2)
2529 get_strz(sc->pb, title + 2, len - 1);
2533 avpriv_new_chapter(s, i, st->time_base, sample->timestamp, end, title);
2537 avio_seek(sc->pb, cur_pos, SEEK_SET);
2540 static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
2542 MOVContext *mov = s->priv_data;
2543 AVIOContext *pb = s->pb;
2545 MOVAtom atom = { AV_RL32("root") };
2548 /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
2550 atom.size = avio_size(pb);
2552 atom.size = INT64_MAX;
2554 /* check MOV header */
2555 if ((err = mov_read_default(mov, pb, atom)) < 0) {
2556 av_log(s, AV_LOG_ERROR, "error reading header: %d\n", err);
2559 if (!mov->found_moov) {
2560 av_log(s, AV_LOG_ERROR, "moov atom not found\n");
2563 av_dlog(mov->fc, "on_parse_exit_offset=%"PRId64"\n", avio_tell(pb));
2565 if (pb->seekable && mov->chapter_track > 0)
2566 mov_read_chapters(s);
2571 static AVIndexEntry *mov_find_next_sample(AVFormatContext *s, AVStream **st)
2573 AVIndexEntry *sample = NULL;
2574 int64_t best_dts = INT64_MAX;
2576 for (i = 0; i < s->nb_streams; i++) {
2577 AVStream *avst = s->streams[i];
2578 MOVStreamContext *msc = avst->priv_data;
2579 if (msc->pb && msc->current_sample < avst->nb_index_entries) {
2580 AVIndexEntry *current_sample = &avst->index_entries[msc->current_sample];
2581 int64_t dts = av_rescale(current_sample->timestamp, AV_TIME_BASE, msc->time_scale);
2582 av_dlog(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
2583 if (!sample || (!s->pb->seekable && current_sample->pos < sample->pos) ||
2585 ((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb &&
2586 ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
2587 (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) {
2588 sample = current_sample;
2597 static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
2599 MOVContext *mov = s->priv_data;
2600 MOVStreamContext *sc;
2601 AVIndexEntry *sample;
2602 AVStream *st = NULL;
2605 sample = mov_find_next_sample(s, &st);
2607 mov->found_mdat = 0;
2608 if (s->pb->seekable||
2609 mov_read_default(mov, s->pb, (MOVAtom){ AV_RL32("root"), INT64_MAX }) < 0 ||
2612 av_dlog(s, "read fragments, offset 0x%"PRIx64"\n", avio_tell(s->pb));
2616 /* must be done just before reading, to avoid infinite loop on sample */
2617 sc->current_sample++;
2619 if (st->discard != AVDISCARD_ALL) {
2620 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
2621 av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
2622 sc->ffindex, sample->pos);
2625 ret = av_get_packet(sc->pb, pkt, sample->size);
2628 if (sc->has_palette) {
2631 pal = av_packet_new_side_data(pkt, AV_PKT_DATA_PALETTE, AVPALETTE_SIZE);
2633 av_log(mov->fc, AV_LOG_ERROR, "Cannot append palette to packet\n");
2635 memcpy(pal, sc->palette, AVPALETTE_SIZE);
2636 sc->has_palette = 0;
2639 #if CONFIG_DV_DEMUXER
2640 if (mov->dv_demux && sc->dv_audio_container) {
2641 avpriv_dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size, pkt->pos);
2644 ret = avpriv_dv_get_packet(mov->dv_demux, pkt);
2651 pkt->stream_index = sc->ffindex;
2652 pkt->dts = sample->timestamp;
2653 if (sc->ctts_data) {
2654 pkt->pts = pkt->dts + sc->dts_shift + sc->ctts_data[sc->ctts_index].duration;
2655 /* update ctts context */
2657 if (sc->ctts_index < sc->ctts_count &&
2658 sc->ctts_data[sc->ctts_index].count == sc->ctts_sample) {
2660 sc->ctts_sample = 0;
2663 pkt->dts = AV_NOPTS_VALUE;
2665 int64_t next_dts = (sc->current_sample < st->nb_index_entries) ?
2666 st->index_entries[sc->current_sample].timestamp : st->duration;
2667 pkt->duration = next_dts - pkt->dts;
2668 pkt->pts = pkt->dts;
2670 if (st->discard == AVDISCARD_ALL)
2672 pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? AV_PKT_FLAG_KEY : 0;
2673 pkt->pos = sample->pos;
2674 av_dlog(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n",
2675 pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
2679 static int mov_seek_stream(AVFormatContext *s, AVStream *st, int64_t timestamp, int flags)
2681 MOVStreamContext *sc = st->priv_data;
2682 int sample, time_sample;
2685 sample = av_index_search_timestamp(st, timestamp, flags);
2686 av_dlog(s, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
2687 if (sample < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
2689 if (sample < 0) /* not sure what to do */
2691 sc->current_sample = sample;
2692 av_dlog(s, "stream %d, found sample %d\n", st->index, sc->current_sample);
2693 /* adjust ctts index */
2694 if (sc->ctts_data) {
2696 for (i = 0; i < sc->ctts_count; i++) {
2697 int next = time_sample + sc->ctts_data[i].count;
2698 if (next > sc->current_sample) {
2700 sc->ctts_sample = sc->current_sample - time_sample;
2709 static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
2712 int64_t seek_timestamp, timestamp;
2716 if (stream_index >= s->nb_streams)
2718 if (sample_time < 0)
2721 st = s->streams[stream_index];
2722 sample = mov_seek_stream(s, st, sample_time, flags);
2726 /* adjust seek timestamp to found sample timestamp */
2727 seek_timestamp = st->index_entries[sample].timestamp;
2729 for (i = 0; i < s->nb_streams; i++) {
2731 if (stream_index == i)
2734 timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
2735 mov_seek_stream(s, st, timestamp, flags);
2740 static int mov_read_close(AVFormatContext *s)
2742 MOVContext *mov = s->priv_data;
2745 for (i = 0; i < s->nb_streams; i++) {
2746 AVStream *st = s->streams[i];
2747 MOVStreamContext *sc = st->priv_data;
2749 av_freep(&sc->ctts_data);
2750 for (j = 0; j < sc->drefs_count; j++) {
2751 av_freep(&sc->drefs[j].path);
2752 av_freep(&sc->drefs[j].dir);
2754 av_freep(&sc->drefs);
2755 if (sc->pb && sc->pb != s->pb)
2759 if (mov->dv_demux) {
2760 for (i = 0; i < mov->dv_fctx->nb_streams; i++) {
2761 av_freep(&mov->dv_fctx->streams[i]->codec);
2762 av_freep(&mov->dv_fctx->streams[i]);
2764 av_freep(&mov->dv_fctx);
2765 av_freep(&mov->dv_demux);
2768 av_freep(&mov->trex_data);
2773 AVInputFormat ff_mov_demuxer = {
2774 .name = "mov,mp4,m4a,3gp,3g2,mj2",
2775 .long_name = NULL_IF_CONFIG_SMALL("QuickTime/MPEG-4/Motion JPEG 2000 format"),
2776 .priv_data_size = sizeof(MOVContext),
2777 .read_probe = mov_probe,
2778 .read_header = mov_read_header,
2779 .read_packet = mov_read_packet,
2780 .read_close = mov_read_close,
2781 .read_seek = mov_read_seek,