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.h"
30 #include "libavutil/mathematics.h"
31 #include "libavutil/avstring.h"
32 #include "libavutil/dict.h"
35 #include "avio_internal.h"
38 #include "libavcodec/get_bits.h"
47 * First version by Francois Revol revol@free.fr
48 * Seek function by Gael Chardon gael.dev@4now.net
51 #include "qtpalette.h"
57 /* those functions parse an atom */
58 /* links atom IDs to parse functions */
59 typedef struct MOVParseTableEntry {
61 int (*parse)(MOVContext *ctx, AVIOContext *pb, MOVAtom atom);
64 static const MOVParseTableEntry mov_default_parse_table[];
66 static int mov_metadata_track_or_disc_number(MOVContext *c, AVIOContext *pb,
67 unsigned len, const char *key)
72 avio_rb16(pb); // unknown
73 current = avio_rb16(pb);
74 total = avio_rb16(pb);
76 snprintf(buf, sizeof(buf), "%d", current);
78 snprintf(buf, sizeof(buf), "%d/%d", current, total);
79 av_dict_set(&c->fc->metadata, key, buf, 0);
84 static int mov_metadata_int8_bypass_padding(MOVContext *c, AVIOContext *pb,
85 unsigned len, const char *key)
89 /* bypass padding bytes */
94 snprintf(buf, sizeof(buf), "%d", avio_r8(pb));
95 av_dict_set(&c->fc->metadata, key, buf, 0);
100 static int mov_metadata_int8_no_padding(MOVContext *c, AVIOContext *pb,
101 unsigned len, const char *key)
105 snprintf(buf, sizeof(buf), "%d", avio_r8(pb));
106 av_dict_set(&c->fc->metadata, key, buf, 0);
111 static int mov_metadata_gnre(MOVContext *c, AVIOContext *pb,
112 unsigned len, const char *key)
117 avio_r8(pb); // unknown
120 if (genre < 1 || genre > ID3v1_GENRE_MAX)
122 snprintf(buf, sizeof(buf), "%s", ff_id3v1_genre_str[genre-1]);
123 av_dict_set(&c->fc->metadata, key, buf, 0);
128 static const uint32_t mac_to_unicode[128] = {
129 0x00C4,0x00C5,0x00C7,0x00C9,0x00D1,0x00D6,0x00DC,0x00E1,
130 0x00E0,0x00E2,0x00E4,0x00E3,0x00E5,0x00E7,0x00E9,0x00E8,
131 0x00EA,0x00EB,0x00ED,0x00EC,0x00EE,0x00EF,0x00F1,0x00F3,
132 0x00F2,0x00F4,0x00F6,0x00F5,0x00FA,0x00F9,0x00FB,0x00FC,
133 0x2020,0x00B0,0x00A2,0x00A3,0x00A7,0x2022,0x00B6,0x00DF,
134 0x00AE,0x00A9,0x2122,0x00B4,0x00A8,0x2260,0x00C6,0x00D8,
135 0x221E,0x00B1,0x2264,0x2265,0x00A5,0x00B5,0x2202,0x2211,
136 0x220F,0x03C0,0x222B,0x00AA,0x00BA,0x03A9,0x00E6,0x00F8,
137 0x00BF,0x00A1,0x00AC,0x221A,0x0192,0x2248,0x2206,0x00AB,
138 0x00BB,0x2026,0x00A0,0x00C0,0x00C3,0x00D5,0x0152,0x0153,
139 0x2013,0x2014,0x201C,0x201D,0x2018,0x2019,0x00F7,0x25CA,
140 0x00FF,0x0178,0x2044,0x20AC,0x2039,0x203A,0xFB01,0xFB02,
141 0x2021,0x00B7,0x201A,0x201E,0x2030,0x00C2,0x00CA,0x00C1,
142 0x00CB,0x00C8,0x00CD,0x00CE,0x00CF,0x00CC,0x00D3,0x00D4,
143 0xF8FF,0x00D2,0x00DA,0x00DB,0x00D9,0x0131,0x02C6,0x02DC,
144 0x00AF,0x02D8,0x02D9,0x02DA,0x00B8,0x02DD,0x02DB,0x02C7,
147 static int mov_read_mac_string(MOVContext *c, AVIOContext *pb, int len,
148 char *dst, int dstlen)
151 char *end = dst+dstlen-1;
154 for (i = 0; i < len; i++) {
155 uint8_t t, c = avio_r8(pb);
156 if (c < 0x80 && p < end)
159 PUT_UTF8(mac_to_unicode[c-0x80], t, if (p < end) *p++ = t;);
165 static int mov_read_udta_string(MOVContext *c, AVIOContext *pb, MOVAtom atom)
167 #ifdef MOV_EXPORT_ALL_METADATA
170 char str[1024], key2[16], language[4] = {0};
171 const char *key = NULL;
172 uint16_t str_size, langcode = 0;
173 uint32_t data_type = 0;
174 int (*parse)(MOVContext*, AVIOContext*, unsigned, const char*) = NULL;
177 case MKTAG(0xa9,'n','a','m'): key = "title"; break;
178 case MKTAG(0xa9,'a','u','t'):
179 case MKTAG(0xa9,'A','R','T'): key = "artist"; break;
180 case MKTAG( 'a','A','R','T'): key = "album_artist"; break;
181 case MKTAG(0xa9,'w','r','t'): key = "composer"; break;
182 case MKTAG( 'c','p','r','t'):
183 case MKTAG(0xa9,'c','p','y'): key = "copyright"; break;
184 case MKTAG(0xa9,'c','m','t'):
185 case MKTAG(0xa9,'i','n','f'): key = "comment"; break;
186 case MKTAG(0xa9,'a','l','b'): key = "album"; break;
187 case MKTAG(0xa9,'d','a','y'): key = "date"; break;
188 case MKTAG(0xa9,'g','e','n'): key = "genre"; break;
189 case MKTAG( 'g','n','r','e'): key = "genre";
190 parse = mov_metadata_gnre; break;
191 case MKTAG(0xa9,'t','o','o'):
192 case MKTAG(0xa9,'s','w','r'): key = "encoder"; break;
193 case MKTAG(0xa9,'e','n','c'): key = "encoder"; break;
194 case MKTAG( 'd','e','s','c'): key = "description";break;
195 case MKTAG( 'l','d','e','s'): key = "synopsis"; break;
196 case MKTAG( 't','v','s','h'): key = "show"; break;
197 case MKTAG( 't','v','e','n'): key = "episode_id";break;
198 case MKTAG( 't','v','n','n'): key = "network"; break;
199 case MKTAG( 't','r','k','n'): key = "track";
200 parse = mov_metadata_track_or_disc_number; break;
201 case MKTAG( 'd','i','s','k'): key = "disc";
202 parse = mov_metadata_track_or_disc_number; break;
203 case MKTAG( 't','v','e','s'): key = "episode_sort";
204 parse = mov_metadata_int8_bypass_padding; break;
205 case MKTAG( 't','v','s','n'): key = "season_number";
206 parse = mov_metadata_int8_bypass_padding; break;
207 case MKTAG( 's','t','i','k'): key = "media_type";
208 parse = mov_metadata_int8_no_padding; break;
209 case MKTAG( 'h','d','v','d'): key = "hd_video";
210 parse = mov_metadata_int8_no_padding; break;
211 case MKTAG( 'p','g','a','p'): key = "gapless_playback";
212 parse = mov_metadata_int8_no_padding; break;
215 if (c->itunes_metadata && atom.size > 8) {
216 int data_size = avio_rb32(pb);
217 int tag = avio_rl32(pb);
218 if (tag == MKTAG('d','a','t','a')) {
219 data_type = avio_rb32(pb); // type
220 avio_rb32(pb); // unknown
221 str_size = data_size - 16;
224 } else if (atom.size > 4 && key && !c->itunes_metadata) {
225 str_size = avio_rb16(pb); // string length
226 langcode = avio_rb16(pb);
227 ff_mov_lang_to_iso639(langcode, language);
230 str_size = atom.size;
232 #ifdef MOV_EXPORT_ALL_METADATA
234 snprintf(tmp_key, 5, "%.4s", (char*)&atom.type);
242 return AVERROR_INVALIDDATA;
244 str_size = FFMIN3(sizeof(str)-1, str_size, atom.size);
247 parse(c, pb, str_size, key);
249 if (data_type == 3 || (data_type == 0 && langcode < 0x800)) { // MAC Encoded
250 mov_read_mac_string(c, pb, str_size, str, sizeof(str));
252 avio_read(pb, str, str_size);
255 av_dict_set(&c->fc->metadata, key, str, 0);
256 if (*language && strcmp(language, "und")) {
257 snprintf(key2, sizeof(key2), "%s-%s", key, language);
258 av_dict_set(&c->fc->metadata, key2, str, 0);
261 av_dlog(c->fc, "lang \"%3s\" ", language);
262 av_dlog(c->fc, "tag \"%s\" value \"%s\" atom \"%.4s\" %d %"PRId64"\n",
263 key, str, (char*)&atom.type, str_size, atom.size);
268 static int mov_read_chpl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
271 int i, nb_chapters, str_len, version;
274 if ((atom.size -= 5) < 0)
277 version = avio_r8(pb);
280 avio_rb32(pb); // ???
281 nb_chapters = avio_r8(pb);
283 for (i = 0; i < nb_chapters; i++) {
287 start = avio_rb64(pb);
288 str_len = avio_r8(pb);
290 if ((atom.size -= 9+str_len) < 0)
293 avio_read(pb, str, str_len);
295 avpriv_new_chapter(c->fc, i, (AVRational){1,10000000}, start, AV_NOPTS_VALUE, str);
300 static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom)
302 int64_t total_size = 0;
307 atom.size = INT64_MAX;
308 while (total_size + 8 < atom.size && !pb->eof_reached) {
309 int (*parse)(MOVContext*, AVIOContext*, MOVAtom) = NULL;
312 if (atom.size >= 8) {
313 a.size = avio_rb32(pb);
314 a.type = avio_rl32(pb);
316 av_dlog(c->fc, "type: %08x '%.4s' parent:'%.4s' sz: %"PRId64" %"PRId64" %"PRId64"\n",
317 a.type, (char*)&a.type, (char*)&atom.type, a.size, total_size, atom.size);
319 if (a.size == 1) { /* 64 bit extended size */
320 a.size = avio_rb64(pb) - 8;
324 a.size = atom.size - total_size;
331 a.size = FFMIN(a.size, atom.size - total_size);
333 for (i = 0; mov_default_parse_table[i].type; i++)
334 if (mov_default_parse_table[i].type == a.type) {
335 parse = mov_default_parse_table[i].parse;
339 // container is user data
340 if (!parse && (atom.type == MKTAG('u','d','t','a') ||
341 atom.type == MKTAG('i','l','s','t')))
342 parse = mov_read_udta_string;
344 if (!parse) { /* skip leaf atoms data */
345 avio_skip(pb, a.size);
347 int64_t start_pos = avio_tell(pb);
349 int err = parse(c, pb, a);
352 if (c->found_moov && c->found_mdat &&
353 (!pb->seekable || start_pos + a.size == avio_size(pb)))
355 left = a.size - avio_tell(pb) + start_pos;
356 if (left > 0) /* skip garbage at atom end */
360 total_size += a.size;
363 if (total_size < atom.size && atom.size < 0x7ffff)
364 avio_skip(pb, atom.size - total_size);
369 static int mov_read_dref(MOVContext *c, AVIOContext *pb, MOVAtom atom)
372 MOVStreamContext *sc;
375 if (c->fc->nb_streams < 1)
377 st = c->fc->streams[c->fc->nb_streams-1];
380 avio_rb32(pb); // version + flags
381 entries = avio_rb32(pb);
382 if (entries >= UINT_MAX / sizeof(*sc->drefs))
383 return AVERROR_INVALIDDATA;
384 sc->drefs = av_mallocz(entries * sizeof(*sc->drefs));
386 return AVERROR(ENOMEM);
387 sc->drefs_count = entries;
389 for (i = 0; i < sc->drefs_count; i++) {
390 MOVDref *dref = &sc->drefs[i];
391 uint32_t size = avio_rb32(pb);
392 int64_t next = avio_tell(pb) + size - 4;
395 return AVERROR_INVALIDDATA;
397 dref->type = avio_rl32(pb);
398 avio_rb32(pb); // version + flags
399 av_dlog(c->fc, "type %.4s size %d\n", (char*)&dref->type, size);
401 if (dref->type == MKTAG('a','l','i','s') && size > 150) {
402 /* macintosh alias record */
403 uint16_t volume_len, len;
408 volume_len = avio_r8(pb);
409 volume_len = FFMIN(volume_len, 27);
410 avio_read(pb, dref->volume, 27);
411 dref->volume[volume_len] = 0;
412 av_log(c->fc, AV_LOG_DEBUG, "volume %s, len %d\n", dref->volume, volume_len);
417 len = FFMIN(len, 63);
418 avio_read(pb, dref->filename, 63);
419 dref->filename[len] = 0;
420 av_log(c->fc, AV_LOG_DEBUG, "filename %s, len %d\n", dref->filename, len);
424 /* read next level up_from_alias/down_to_target */
425 dref->nlvl_from = avio_rb16(pb);
426 dref->nlvl_to = avio_rb16(pb);
427 av_log(c->fc, AV_LOG_DEBUG, "nlvl from %d, nlvl to %d\n",
428 dref->nlvl_from, dref->nlvl_to);
432 for (type = 0; type != -1 && avio_tell(pb) < next; ) {
433 type = avio_rb16(pb);
435 av_log(c->fc, AV_LOG_DEBUG, "type %d, len %d\n", type, len);
438 if (type == 2) { // absolute path
440 dref->path = av_mallocz(len+1);
442 return AVERROR(ENOMEM);
443 avio_read(pb, dref->path, len);
444 if (len > volume_len && !strncmp(dref->path, dref->volume, volume_len)) {
446 memmove(dref->path, dref->path+volume_len, len);
449 for (j = 0; j < len; j++)
450 if (dref->path[j] == ':')
452 av_log(c->fc, AV_LOG_DEBUG, "path %s\n", dref->path);
453 } else if (type == 0) { // directory name
455 dref->dir = av_malloc(len+1);
457 return AVERROR(ENOMEM);
458 avio_read(pb, dref->dir, len);
460 for (j = 0; j < len; j++)
461 if (dref->dir[j] == ':')
463 av_log(c->fc, AV_LOG_DEBUG, "dir %s\n", dref->dir);
468 avio_seek(pb, next, SEEK_SET);
473 static int mov_read_hdlr(MOVContext *c, AVIOContext *pb, MOVAtom atom)
477 uint32_t av_unused ctype;
479 if (c->fc->nb_streams < 1) // meta before first trak
482 st = c->fc->streams[c->fc->nb_streams-1];
484 avio_r8(pb); /* version */
485 avio_rb24(pb); /* flags */
488 ctype = avio_rl32(pb);
489 type = avio_rl32(pb); /* component subtype */
491 av_dlog(c->fc, "ctype= %.4s (0x%08x)\n", (char*)&ctype, ctype);
492 av_dlog(c->fc, "stype= %.4s\n", (char*)&type);
494 if (type == MKTAG('v','i','d','e'))
495 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
496 else if (type == MKTAG('s','o','u','n'))
497 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
498 else if (type == MKTAG('m','1','a',' '))
499 st->codec->codec_id = CODEC_ID_MP2;
500 else if ((type == MKTAG('s','u','b','p')) || (type == MKTAG('c','l','c','p')))
501 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
503 avio_rb32(pb); /* component manufacture */
504 avio_rb32(pb); /* component flags */
505 avio_rb32(pb); /* component flags mask */
510 int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb, MOVAtom atom)
515 if (fc->nb_streams < 1)
517 st = fc->streams[fc->nb_streams-1];
519 avio_rb32(pb); /* version + flags */
520 ff_mp4_read_descr(fc, pb, &tag);
521 if (tag == MP4ESDescrTag) {
522 ff_mp4_parse_es_descr(pb, NULL);
524 avio_rb16(pb); /* ID */
526 ff_mp4_read_descr(fc, pb, &tag);
527 if (tag == MP4DecConfigDescrTag)
528 ff_mp4_read_dec_config_descr(fc, st, pb);
532 static int mov_read_esds(MOVContext *c, AVIOContext *pb, MOVAtom atom)
534 return ff_mov_read_esds(c->fc, pb, atom);
537 static int mov_read_dac3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
540 int ac3info, acmod, lfeon, bsmod;
542 if (c->fc->nb_streams < 1)
544 st = c->fc->streams[c->fc->nb_streams-1];
546 ac3info = avio_rb24(pb);
547 bsmod = (ac3info >> 14) & 0x7;
548 acmod = (ac3info >> 11) & 0x7;
549 lfeon = (ac3info >> 10) & 0x1;
550 st->codec->channels = ((int[]){2,1,2,3,3,4,4,5})[acmod] + lfeon;
551 st->codec->audio_service_type = bsmod;
552 if (st->codec->channels > 1 && bsmod == 0x7)
553 st->codec->audio_service_type = AV_AUDIO_SERVICE_TYPE_KARAOKE;
558 static int mov_read_chan(MOVContext *c, AVIOContext *pb, MOVAtom atom)
562 uint32_t flags, layout_tag, bitmap, num_descr, label_mask;
565 if (c->fc->nb_streams < 1)
567 st = c->fc->streams[c->fc->nb_streams-1];
572 version = avio_r8(pb);
573 flags = avio_rb24(pb);
575 layout_tag = avio_rb32(pb);
576 bitmap = avio_rb32(pb);
577 num_descr = avio_rb32(pb);
579 if (atom.size < 16ULL + num_descr * 20ULL)
582 av_dlog(c->fc, "chan: size=%ld version=%u flags=%u layout=%u bitmap=%u num_descr=%u\n",
583 atom.size, version, flags, layout_tag, bitmap, num_descr);
586 for (i = 0; i < num_descr; i++) {
587 uint32_t label, cflags;
588 label = avio_rb32(pb); // mChannelLabel
589 cflags = avio_rb32(pb); // mChannelFlags
590 avio_rl32(pb); // mCoordinates[0]
591 avio_rl32(pb); // mCoordinates[1]
592 avio_rl32(pb); // mCoordinates[2]
593 if (layout_tag == 0) {
594 uint32_t mask_incr = ff_mov_get_channel_label(label);
595 if (mask_incr == 0) {
599 label_mask |= mask_incr;
603 st->codec->channel_layout = label_mask;
605 st->codec->channel_layout = ff_mov_get_channel_layout(layout_tag, bitmap);
610 static int mov_read_wfex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
614 if (c->fc->nb_streams < 1)
616 st = c->fc->streams[c->fc->nb_streams-1];
618 ff_get_wav_header(pb, st->codec, atom.size);
623 static int mov_read_pasp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
625 const int num = avio_rb32(pb);
626 const int den = avio_rb32(pb);
629 if (c->fc->nb_streams < 1)
631 st = c->fc->streams[c->fc->nb_streams-1];
633 if ((st->sample_aspect_ratio.den != 1 || st->sample_aspect_ratio.num) && // default
634 (den != st->sample_aspect_ratio.den || num != st->sample_aspect_ratio.num)) {
635 av_log(c->fc, AV_LOG_WARNING,
636 "sample aspect ratio already set to %d:%d, ignoring 'pasp' atom (%d:%d)\n",
637 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
639 } else if (den != 0) {
640 st->sample_aspect_ratio.num = num;
641 st->sample_aspect_ratio.den = den;
646 /* this atom contains actual media data */
647 static int mov_read_mdat(MOVContext *c, AVIOContext *pb, MOVAtom atom)
649 if (atom.size == 0) /* wrong one (MP4) */
652 return 0; /* now go for moov */
655 /* read major brand, minor version and compatible brands and store them as metadata */
656 static int mov_read_ftyp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
660 char minor_ver_str[11]; /* 32 bit integer -> 10 digits + null */
661 char* comp_brands_str;
662 uint8_t type[5] = {0};
664 avio_read(pb, type, 4);
665 if (strcmp(type, "qt "))
667 av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
668 av_dict_set(&c->fc->metadata, "major_brand", type, 0);
669 minor_ver = avio_rb32(pb); /* minor version */
670 snprintf(minor_ver_str, sizeof(minor_ver_str), "%d", minor_ver);
671 av_dict_set(&c->fc->metadata, "minor_version", minor_ver_str, 0);
673 comp_brand_size = atom.size - 8;
674 if (comp_brand_size < 0)
675 return AVERROR_INVALIDDATA;
676 comp_brands_str = av_malloc(comp_brand_size + 1); /* Add null terminator */
677 if (!comp_brands_str)
678 return AVERROR(ENOMEM);
679 avio_read(pb, comp_brands_str, comp_brand_size);
680 comp_brands_str[comp_brand_size] = 0;
681 av_dict_set(&c->fc->metadata, "compatible_brands", comp_brands_str, 0);
682 av_freep(&comp_brands_str);
687 /* this atom should contain all header atoms */
688 static int mov_read_moov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
692 if ((ret = mov_read_default(c, pb, atom)) < 0)
694 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
695 /* so we don't parse the whole file if over a network */
697 return 0; /* now go for mdat */
700 static int mov_read_moof(MOVContext *c, AVIOContext *pb, MOVAtom atom)
702 c->fragment.moof_offset = avio_tell(pb) - 8;
703 av_dlog(c->fc, "moof offset %"PRIx64"\n", c->fragment.moof_offset);
704 return mov_read_default(c, pb, atom);
707 static void mov_metadata_creation_time(AVDictionary **metadata, time_t time)
712 time -= 2082844800; /* seconds between 1904-01-01 and Epoch */
715 strftime(buffer, sizeof(buffer), "%Y-%m-%d %H:%M:%S", ptm);
716 av_dict_set(metadata, "creation_time", buffer, 0);
720 static int mov_read_mdhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
723 MOVStreamContext *sc;
725 char language[4] = {0};
727 time_t creation_time;
729 if (c->fc->nb_streams < 1)
731 st = c->fc->streams[c->fc->nb_streams-1];
734 version = avio_r8(pb);
736 av_log_ask_for_sample(c, "unsupported version %d\n", version);
737 return AVERROR_PATCHWELCOME;
739 avio_rb24(pb); /* flags */
741 creation_time = avio_rb64(pb);
744 creation_time = avio_rb32(pb);
745 avio_rb32(pb); /* modification time */
747 mov_metadata_creation_time(&st->metadata, creation_time);
749 sc->time_scale = avio_rb32(pb);
750 st->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
752 lang = avio_rb16(pb); /* language */
753 if (ff_mov_lang_to_iso639(lang, language))
754 av_dict_set(&st->metadata, "language", language, 0);
755 avio_rb16(pb); /* quality */
760 static int mov_read_mvhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
762 time_t creation_time;
763 int version = avio_r8(pb); /* version */
764 avio_rb24(pb); /* flags */
767 creation_time = avio_rb64(pb);
770 creation_time = avio_rb32(pb);
771 avio_rb32(pb); /* modification time */
773 mov_metadata_creation_time(&c->fc->metadata, creation_time);
774 c->time_scale = avio_rb32(pb); /* time scale */
776 av_dlog(c->fc, "time scale = %i\n", c->time_scale);
778 c->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
779 avio_rb32(pb); /* preferred scale */
781 avio_rb16(pb); /* preferred volume */
783 avio_skip(pb, 10); /* reserved */
785 avio_skip(pb, 36); /* display matrix */
787 avio_rb32(pb); /* preview time */
788 avio_rb32(pb); /* preview duration */
789 avio_rb32(pb); /* poster time */
790 avio_rb32(pb); /* selection time */
791 avio_rb32(pb); /* selection duration */
792 avio_rb32(pb); /* current time */
793 avio_rb32(pb); /* next track ID */
798 static int mov_read_smi(MOVContext *c, AVIOContext *pb, MOVAtom atom)
802 if (c->fc->nb_streams < 1)
804 st = c->fc->streams[c->fc->nb_streams-1];
806 if ((uint64_t)atom.size > (1<<30))
807 return AVERROR_INVALIDDATA;
809 // currently SVQ3 decoder expect full STSD header - so let's fake it
810 // this should be fixed and just SMI header should be passed
811 av_free(st->codec->extradata);
812 st->codec->extradata = av_mallocz(atom.size + 0x5a + FF_INPUT_BUFFER_PADDING_SIZE);
813 if (!st->codec->extradata)
814 return AVERROR(ENOMEM);
815 st->codec->extradata_size = 0x5a + atom.size;
816 memcpy(st->codec->extradata, "SVQ3", 4); // fake
817 avio_read(pb, st->codec->extradata + 0x5a, atom.size);
818 av_dlog(c->fc, "Reading SMI %"PRId64" %s\n", atom.size, st->codec->extradata + 0x5a);
822 static int mov_read_enda(MOVContext *c, AVIOContext *pb, MOVAtom atom)
827 if (c->fc->nb_streams < 1)
829 st = c->fc->streams[c->fc->nb_streams-1];
831 little_endian = avio_rb16(pb);
832 av_dlog(c->fc, "enda %d\n", little_endian);
833 if (little_endian == 1) {
834 switch (st->codec->codec_id) {
835 case CODEC_ID_PCM_S24BE:
836 st->codec->codec_id = CODEC_ID_PCM_S24LE;
838 case CODEC_ID_PCM_S32BE:
839 st->codec->codec_id = CODEC_ID_PCM_S32LE;
841 case CODEC_ID_PCM_F32BE:
842 st->codec->codec_id = CODEC_ID_PCM_F32LE;
844 case CODEC_ID_PCM_F64BE:
845 st->codec->codec_id = CODEC_ID_PCM_F64LE;
854 static int mov_read_fiel(MOVContext *c, AVIOContext *pb, MOVAtom atom)
857 unsigned mov_field_order;
858 enum AVFieldOrder decoded_field_order = AV_FIELD_UNKNOWN;
860 if (c->fc->nb_streams < 1) // will happen with jp2 files
862 st = c->fc->streams[c->fc->nb_streams-1];
864 return AVERROR_INVALIDDATA;
865 mov_field_order = avio_rb16(pb);
866 if ((mov_field_order & 0xFF00) == 0x0100)
867 decoded_field_order = AV_FIELD_PROGRESSIVE;
868 else if ((mov_field_order & 0xFF00) == 0x0200) {
869 switch (mov_field_order & 0xFF) {
870 case 0x01: decoded_field_order = AV_FIELD_TT;
872 case 0x06: decoded_field_order = AV_FIELD_BB;
874 case 0x09: decoded_field_order = AV_FIELD_TB;
876 case 0x0E: decoded_field_order = AV_FIELD_BT;
880 if (decoded_field_order == AV_FIELD_UNKNOWN && mov_field_order) {
881 av_log(NULL, AV_LOG_ERROR, "Unknown MOV field order 0x%04x\n", mov_field_order);
883 st->codec->field_order = decoded_field_order;
888 /* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
889 static int mov_read_extradata(MOVContext *c, AVIOContext *pb, MOVAtom atom)
895 if (c->fc->nb_streams < 1) // will happen with jp2 files
897 st= c->fc->streams[c->fc->nb_streams-1];
898 size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
899 if (size > INT_MAX || (uint64_t)atom.size > INT_MAX)
900 return AVERROR_INVALIDDATA;
901 buf= av_realloc(st->codec->extradata, size);
903 return AVERROR(ENOMEM);
904 st->codec->extradata= buf;
905 buf+= st->codec->extradata_size;
906 st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE;
907 AV_WB32( buf , atom.size + 8);
908 AV_WL32( buf + 4, atom.type);
909 avio_read(pb, buf + 8, atom.size);
913 static int mov_read_wave(MOVContext *c, AVIOContext *pb, MOVAtom atom)
917 if (c->fc->nb_streams < 1)
919 st = c->fc->streams[c->fc->nb_streams-1];
921 if ((uint64_t)atom.size > (1<<30))
922 return AVERROR_INVALIDDATA;
924 if (st->codec->codec_id == CODEC_ID_QDM2 || st->codec->codec_id == CODEC_ID_QDMC) {
925 // pass all frma atom to codec, needed at least for QDMC and QDM2
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);
932 } else if (atom.size > 8) { /* to read frma, esds atoms */
934 if ((ret = mov_read_default(c, pb, atom)) < 0)
937 avio_skip(pb, atom.size);
942 * This function reads atom content and puts data in extradata without tag
943 * nor size unlike mov_read_extradata.
945 static int mov_read_glbl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
949 if (c->fc->nb_streams < 1)
951 st = c->fc->streams[c->fc->nb_streams-1];
953 if ((uint64_t)atom.size > (1<<30))
954 return AVERROR_INVALIDDATA;
956 if (atom.size >= 10) {
957 // Broken files created by legacy versions of Libav and FFmpeg will
958 // wrap a whole fiel atom inside of a glbl atom.
959 unsigned size = avio_rb32(pb);
960 unsigned type = avio_rl32(pb);
961 avio_seek(pb, -8, SEEK_CUR);
962 if (type == MKTAG('f','i','e','l') && size == atom.size)
963 return mov_read_default(c, pb, atom);
965 av_free(st->codec->extradata);
966 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
967 if (!st->codec->extradata)
968 return AVERROR(ENOMEM);
969 st->codec->extradata_size = atom.size;
970 avio_read(pb, st->codec->extradata, atom.size);
975 * An strf atom is a BITMAPINFOHEADER struct. This struct is 40 bytes itself,
976 * but can have extradata appended at the end after the 40 bytes belonging
979 static int mov_read_strf(MOVContext *c, AVIOContext *pb, MOVAtom atom)
983 if (c->fc->nb_streams < 1)
987 st = c->fc->streams[c->fc->nb_streams-1];
989 if ((uint64_t)atom.size > (1<<30))
990 return AVERROR_INVALIDDATA;
992 av_free(st->codec->extradata);
993 st->codec->extradata = av_mallocz(atom.size - 40 + FF_INPUT_BUFFER_PADDING_SIZE);
994 if (!st->codec->extradata)
995 return AVERROR(ENOMEM);
996 st->codec->extradata_size = atom.size - 40;
998 avio_read(pb, st->codec->extradata, atom.size - 40);
1002 static int mov_read_stco(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1005 MOVStreamContext *sc;
1006 unsigned int i, entries;
1008 if (c->fc->nb_streams < 1)
1010 st = c->fc->streams[c->fc->nb_streams-1];
1013 avio_r8(pb); /* version */
1014 avio_rb24(pb); /* flags */
1016 entries = avio_rb32(pb);
1020 if (entries >= UINT_MAX/sizeof(int64_t))
1021 return AVERROR_INVALIDDATA;
1023 sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
1024 if (!sc->chunk_offsets)
1025 return AVERROR(ENOMEM);
1026 sc->chunk_count = entries;
1028 if (atom.type == MKTAG('s','t','c','o'))
1029 for (i=0; i<entries; i++)
1030 sc->chunk_offsets[i] = avio_rb32(pb);
1031 else if (atom.type == MKTAG('c','o','6','4'))
1032 for (i=0; i<entries; i++)
1033 sc->chunk_offsets[i] = avio_rb64(pb);
1035 return AVERROR_INVALIDDATA;
1041 * Compute codec id for 'lpcm' tag.
1042 * See CoreAudioTypes and AudioStreamBasicDescription at Apple.
1044 enum CodecID ff_mov_get_lpcm_codec_id(int bps, int flags)
1046 if (flags & 1) { // floating point
1047 if (flags & 2) { // big endian
1048 if (bps == 32) return CODEC_ID_PCM_F32BE;
1049 else if (bps == 64) return CODEC_ID_PCM_F64BE;
1051 if (bps == 32) return CODEC_ID_PCM_F32LE;
1052 else if (bps == 64) return CODEC_ID_PCM_F64LE;
1058 if (flags & 4) return CODEC_ID_PCM_S8;
1059 else return CODEC_ID_PCM_U8;
1060 else if (bps == 16) return CODEC_ID_PCM_S16BE;
1061 else if (bps == 24) return CODEC_ID_PCM_S24BE;
1062 else if (bps == 32) return CODEC_ID_PCM_S32BE;
1065 if (flags & 4) return CODEC_ID_PCM_S8;
1066 else return CODEC_ID_PCM_U8;
1067 else if (bps == 16) return CODEC_ID_PCM_S16LE;
1068 else if (bps == 24) return CODEC_ID_PCM_S24LE;
1069 else if (bps == 32) return CODEC_ID_PCM_S32LE;
1072 return CODEC_ID_NONE;
1075 int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries)
1078 MOVStreamContext *sc;
1079 int j, pseudo_stream_id;
1081 if (c->fc->nb_streams < 1)
1083 st = c->fc->streams[c->fc->nb_streams-1];
1086 for (pseudo_stream_id=0; pseudo_stream_id<entries; pseudo_stream_id++) {
1087 //Parsing Sample description table
1090 MOVAtom a = { AV_RL32("stsd") };
1091 int64_t start_pos = avio_tell(pb);
1092 int size = avio_rb32(pb); /* size */
1093 uint32_t format = avio_rl32(pb); /* data format */
1096 avio_rb32(pb); /* reserved */
1097 avio_rb16(pb); /* reserved */
1098 dref_id = avio_rb16(pb);
1101 if (st->codec->codec_tag &&
1102 st->codec->codec_tag != format &&
1103 (c->fc->video_codec_id ? ff_codec_get_id(codec_movvideo_tags, format) != c->fc->video_codec_id
1104 : st->codec->codec_tag != MKTAG('j','p','e','g'))
1106 /* Multiple fourcc, we skip JPEG. This is not correct, we should
1107 * export it as a separate AVStream but this needs a few changes
1108 * in the MOV demuxer, patch welcome. */
1110 av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n");
1111 avio_skip(pb, size - (avio_tell(pb) - start_pos));
1114 /* we cannot demux concatenated h264 streams because of different extradata */
1115 if (st->codec->codec_tag && st->codec->codec_tag == AV_RL32("avc1"))
1117 sc->pseudo_stream_id = st->codec->codec_tag ? -1 : pseudo_stream_id;
1118 sc->dref_id= dref_id;
1120 st->codec->codec_tag = format;
1121 id = ff_codec_get_id(codec_movaudio_tags, format);
1122 if (id<=0 && ((format&0xFFFF) == 'm'+('s'<<8) || (format&0xFFFF) == 'T'+('S'<<8)))
1123 id = ff_codec_get_id(ff_codec_wav_tags, av_bswap32(format)&0xFFFF);
1125 if (st->codec->codec_type != AVMEDIA_TYPE_VIDEO && id > 0) {
1126 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
1127 } else if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO && /* do not overwrite codec type */
1128 format && format != MKTAG('m','p','4','s')) { /* skip old asf mpeg4 tag */
1129 id = ff_codec_get_id(codec_movvideo_tags, format);
1131 id = ff_codec_get_id(ff_codec_bmp_tags, format);
1133 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
1134 else if (st->codec->codec_type == AVMEDIA_TYPE_DATA){
1135 id = ff_codec_get_id(ff_codec_movsubtitle_tags, format);
1137 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
1141 av_dlog(c->fc, "size=%d 4CC= %c%c%c%c codec_type=%d\n", size,
1142 (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff,
1143 (format >> 24) & 0xff, st->codec->codec_type);
1145 if (st->codec->codec_type==AVMEDIA_TYPE_VIDEO) {
1146 unsigned int color_depth, len;
1147 int color_greyscale;
1149 st->codec->codec_id = id;
1150 avio_rb16(pb); /* version */
1151 avio_rb16(pb); /* revision level */
1152 avio_rb32(pb); /* vendor */
1153 avio_rb32(pb); /* temporal quality */
1154 avio_rb32(pb); /* spatial quality */
1156 st->codec->width = avio_rb16(pb); /* width */
1157 st->codec->height = avio_rb16(pb); /* height */
1159 avio_rb32(pb); /* horiz resolution */
1160 avio_rb32(pb); /* vert resolution */
1161 avio_rb32(pb); /* data size, always 0 */
1162 avio_rb16(pb); /* frames per samples */
1164 len = avio_r8(pb); /* codec name, pascal string */
1167 mov_read_mac_string(c, pb, len, st->codec->codec_name, 32);
1169 avio_skip(pb, 31 - len);
1170 /* codec_tag YV12 triggers an UV swap in rawdec.c */
1171 if (!memcmp(st->codec->codec_name, "Planar Y'CbCr 8-bit 4:2:0", 25))
1172 st->codec->codec_tag=MKTAG('I', '4', '2', '0');
1174 st->codec->bits_per_coded_sample = avio_rb16(pb); /* depth */
1175 st->codec->color_table_id = avio_rb16(pb); /* colortable id */
1176 av_dlog(c->fc, "depth %d, ctab id %d\n",
1177 st->codec->bits_per_coded_sample, st->codec->color_table_id);
1178 /* figure out the palette situation */
1179 color_depth = st->codec->bits_per_coded_sample & 0x1F;
1180 color_greyscale = st->codec->bits_per_coded_sample & 0x20;
1182 /* if the depth is 2, 4, or 8 bpp, file is palettized */
1183 if ((color_depth == 2) || (color_depth == 4) ||
1184 (color_depth == 8)) {
1185 /* for palette traversal */
1186 unsigned int color_start, color_count, color_end;
1187 unsigned char r, g, b;
1189 if (color_greyscale) {
1190 int color_index, color_dec;
1191 /* compute the greyscale palette */
1192 st->codec->bits_per_coded_sample = color_depth;
1193 color_count = 1 << color_depth;
1195 color_dec = 256 / (color_count - 1);
1196 for (j = 0; j < color_count; j++) {
1197 r = g = b = color_index;
1199 (r << 16) | (g << 8) | (b);
1200 color_index -= color_dec;
1201 if (color_index < 0)
1204 } else if (st->codec->color_table_id) {
1205 const uint8_t *color_table;
1206 /* if flag bit 3 is set, use the default palette */
1207 color_count = 1 << color_depth;
1208 if (color_depth == 2)
1209 color_table = ff_qt_default_palette_4;
1210 else if (color_depth == 4)
1211 color_table = ff_qt_default_palette_16;
1213 color_table = ff_qt_default_palette_256;
1215 for (j = 0; j < color_count; j++) {
1216 r = color_table[j * 3 + 0];
1217 g = color_table[j * 3 + 1];
1218 b = color_table[j * 3 + 2];
1220 (r << 16) | (g << 8) | (b);
1223 /* load the palette from the file */
1224 color_start = avio_rb32(pb);
1225 color_count = avio_rb16(pb);
1226 color_end = avio_rb16(pb);
1227 if ((color_start <= 255) &&
1228 (color_end <= 255)) {
1229 for (j = color_start; j <= color_end; j++) {
1230 /* each R, G, or B component is 16 bits;
1231 * only use the top 8 bits; skip alpha bytes
1242 (r << 16) | (g << 8) | (b);
1246 sc->has_palette = 1;
1248 } else if (st->codec->codec_type==AVMEDIA_TYPE_AUDIO) {
1249 int bits_per_sample, flags;
1250 uint16_t version = avio_rb16(pb);
1252 st->codec->codec_id = id;
1253 avio_rb16(pb); /* revision level */
1254 avio_rb32(pb); /* vendor */
1256 st->codec->channels = avio_rb16(pb); /* channel count */
1257 av_dlog(c->fc, "audio channels %d\n", st->codec->channels);
1258 st->codec->bits_per_coded_sample = avio_rb16(pb); /* sample size */
1260 sc->audio_cid = avio_rb16(pb);
1261 avio_rb16(pb); /* packet size = 0 */
1263 st->codec->sample_rate = ((avio_rb32(pb) >> 16));
1265 //Read QT version 1 fields. In version 0 these do not exist.
1266 av_dlog(c->fc, "version =%d, isom =%d\n",version,c->isom);
1269 sc->samples_per_frame = avio_rb32(pb);
1270 avio_rb32(pb); /* bytes per packet */
1271 sc->bytes_per_frame = avio_rb32(pb);
1272 avio_rb32(pb); /* bytes per sample */
1273 } else if (version==2) {
1274 avio_rb32(pb); /* sizeof struct only */
1275 st->codec->sample_rate = av_int2double(avio_rb64(pb)); /* float 64 */
1276 st->codec->channels = avio_rb32(pb);
1277 avio_rb32(pb); /* always 0x7F000000 */
1278 st->codec->bits_per_coded_sample = avio_rb32(pb); /* bits per channel if sound is uncompressed */
1279 flags = avio_rb32(pb); /* lpcm format specific flag */
1280 sc->bytes_per_frame = avio_rb32(pb); /* bytes per audio packet if constant */
1281 sc->samples_per_frame = avio_rb32(pb); /* lpcm frames per audio packet if constant */
1282 if (format == MKTAG('l','p','c','m'))
1283 st->codec->codec_id = ff_mov_get_lpcm_codec_id(st->codec->bits_per_coded_sample, flags);
1287 switch (st->codec->codec_id) {
1288 case CODEC_ID_PCM_S8:
1289 case CODEC_ID_PCM_U8:
1290 if (st->codec->bits_per_coded_sample == 16)
1291 st->codec->codec_id = CODEC_ID_PCM_S16BE;
1293 case CODEC_ID_PCM_S16LE:
1294 case CODEC_ID_PCM_S16BE:
1295 if (st->codec->bits_per_coded_sample == 8)
1296 st->codec->codec_id = CODEC_ID_PCM_S8;
1297 else if (st->codec->bits_per_coded_sample == 24)
1298 st->codec->codec_id =
1299 st->codec->codec_id == CODEC_ID_PCM_S16BE ?
1300 CODEC_ID_PCM_S24BE : CODEC_ID_PCM_S24LE;
1302 /* set values for old format before stsd version 1 appeared */
1303 case CODEC_ID_MACE3:
1304 sc->samples_per_frame = 6;
1305 sc->bytes_per_frame = 2*st->codec->channels;
1307 case CODEC_ID_MACE6:
1308 sc->samples_per_frame = 6;
1309 sc->bytes_per_frame = 1*st->codec->channels;
1311 case CODEC_ID_ADPCM_IMA_QT:
1312 sc->samples_per_frame = 64;
1313 sc->bytes_per_frame = 34*st->codec->channels;
1316 sc->samples_per_frame = 160;
1317 sc->bytes_per_frame = 33;
1323 bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
1324 if (bits_per_sample) {
1325 st->codec->bits_per_coded_sample = bits_per_sample;
1326 sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
1328 } else if (st->codec->codec_type==AVMEDIA_TYPE_SUBTITLE){
1329 // ttxt stsd contains display flags, justification, background
1330 // color, fonts, and default styles, so fake an atom to read it
1331 MOVAtom fake_atom = { .size = size - (avio_tell(pb) - start_pos) };
1332 if (format != AV_RL32("mp4s")) // mp4s contains a regular esds atom
1333 mov_read_glbl(c, pb, fake_atom);
1334 st->codec->codec_id= id;
1335 st->codec->width = sc->width;
1336 st->codec->height = sc->height;
1338 /* other codec type, just skip (rtp, mp4s, tmcd ...) */
1339 avio_skip(pb, size - (avio_tell(pb) - start_pos));
1341 /* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */
1342 a.size = size - (avio_tell(pb) - start_pos);
1345 if ((ret = mov_read_default(c, pb, a)) < 0)
1347 } else if (a.size > 0)
1348 avio_skip(pb, a.size);
1351 if (st->codec->codec_type==AVMEDIA_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1)
1352 st->codec->sample_rate= sc->time_scale;
1354 /* special codec parameters handling */
1355 switch (st->codec->codec_id) {
1356 #if CONFIG_DV_DEMUXER
1357 case CODEC_ID_DVAUDIO:
1358 c->dv_fctx = avformat_alloc_context();
1359 c->dv_demux = avpriv_dv_init_demux(c->dv_fctx);
1361 av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
1362 return AVERROR(ENOMEM);
1364 sc->dv_audio_container = 1;
1365 st->codec->codec_id = CODEC_ID_PCM_S16LE;
1368 /* no ifdef since parameters are always those */
1369 case CODEC_ID_QCELP:
1370 // force sample rate for qcelp when not stored in mov
1371 if (st->codec->codec_tag != MKTAG('Q','c','l','p'))
1372 st->codec->sample_rate = 8000;
1373 st->codec->frame_size= 160;
1374 st->codec->channels= 1; /* really needed */
1376 case CODEC_ID_AMR_NB:
1377 st->codec->channels= 1; /* really needed */
1378 /* force sample rate for amr, stsd in 3gp does not store sample rate */
1379 st->codec->sample_rate = 8000;
1380 /* force frame_size, too, samples_per_frame isn't always set properly */
1381 st->codec->frame_size = 160;
1383 case CODEC_ID_AMR_WB:
1384 st->codec->channels = 1;
1385 st->codec->sample_rate = 16000;
1386 st->codec->frame_size = 320;
1390 st->codec->codec_type = AVMEDIA_TYPE_AUDIO; /* force type after stsd for m1a hdlr */
1391 st->need_parsing = AVSTREAM_PARSE_FULL;
1394 case CODEC_ID_ADPCM_MS:
1395 case CODEC_ID_ADPCM_IMA_WAV:
1396 st->codec->frame_size = sc->samples_per_frame;
1397 st->codec->block_align = sc->bytes_per_frame;
1400 if (st->codec->extradata_size == 36) {
1401 st->codec->frame_size = AV_RB32(st->codec->extradata+12);
1402 st->codec->channels = AV_RB8 (st->codec->extradata+21);
1403 st->codec->sample_rate = AV_RB32(st->codec->extradata+32);
1413 static int mov_read_stsd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1417 avio_r8(pb); /* version */
1418 avio_rb24(pb); /* flags */
1419 entries = avio_rb32(pb);
1421 return ff_mov_read_stsd_entries(c, pb, entries);
1424 static int mov_read_stsc(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1427 MOVStreamContext *sc;
1428 unsigned int i, entries;
1430 if (c->fc->nb_streams < 1)
1432 st = c->fc->streams[c->fc->nb_streams-1];
1435 avio_r8(pb); /* version */
1436 avio_rb24(pb); /* flags */
1438 entries = avio_rb32(pb);
1440 av_dlog(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
1444 if (entries >= UINT_MAX / sizeof(*sc->stsc_data))
1445 return AVERROR_INVALIDDATA;
1446 sc->stsc_data = av_malloc(entries * sizeof(*sc->stsc_data));
1448 return AVERROR(ENOMEM);
1449 sc->stsc_count = entries;
1451 for (i=0; i<entries; i++) {
1452 sc->stsc_data[i].first = avio_rb32(pb);
1453 sc->stsc_data[i].count = avio_rb32(pb);
1454 sc->stsc_data[i].id = avio_rb32(pb);
1459 static int mov_read_stps(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1462 MOVStreamContext *sc;
1463 unsigned i, entries;
1465 if (c->fc->nb_streams < 1)
1467 st = c->fc->streams[c->fc->nb_streams-1];
1470 avio_rb32(pb); // version + flags
1472 entries = avio_rb32(pb);
1473 if (entries >= UINT_MAX / sizeof(*sc->stps_data))
1474 return AVERROR_INVALIDDATA;
1475 sc->stps_data = av_malloc(entries * sizeof(*sc->stps_data));
1477 return AVERROR(ENOMEM);
1478 sc->stps_count = entries;
1480 for (i = 0; i < entries; i++) {
1481 sc->stps_data[i] = avio_rb32(pb);
1482 //av_dlog(c->fc, "stps %d\n", sc->stps_data[i]);
1488 static int mov_read_stss(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1491 MOVStreamContext *sc;
1492 unsigned int i, entries;
1494 if (c->fc->nb_streams < 1)
1496 st = c->fc->streams[c->fc->nb_streams-1];
1499 avio_r8(pb); /* version */
1500 avio_rb24(pb); /* flags */
1502 entries = avio_rb32(pb);
1504 av_dlog(c->fc, "keyframe_count = %d\n", entries);
1506 if (entries >= UINT_MAX / sizeof(int))
1507 return AVERROR_INVALIDDATA;
1508 sc->keyframes = av_malloc(entries * sizeof(int));
1510 return AVERROR(ENOMEM);
1511 sc->keyframe_count = entries;
1513 for (i=0; i<entries; i++) {
1514 sc->keyframes[i] = avio_rb32(pb);
1515 //av_dlog(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
1520 static int mov_read_stsz(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1523 MOVStreamContext *sc;
1524 unsigned int i, entries, sample_size, field_size, num_bytes;
1528 if (c->fc->nb_streams < 1)
1530 st = c->fc->streams[c->fc->nb_streams-1];
1533 avio_r8(pb); /* version */
1534 avio_rb24(pb); /* flags */
1536 if (atom.type == MKTAG('s','t','s','z')) {
1537 sample_size = avio_rb32(pb);
1538 if (!sc->sample_size) /* do not overwrite value computed in stsd */
1539 sc->sample_size = sample_size;
1543 avio_rb24(pb); /* reserved */
1544 field_size = avio_r8(pb);
1546 entries = avio_rb32(pb);
1548 av_dlog(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, entries);
1550 sc->sample_count = entries;
1554 if (field_size != 4 && field_size != 8 && field_size != 16 && field_size != 32) {
1555 av_log(c->fc, AV_LOG_ERROR, "Invalid sample field size %d\n", field_size);
1556 return AVERROR_INVALIDDATA;
1561 if (entries >= UINT_MAX / sizeof(int) || entries >= (UINT_MAX - 4) / field_size)
1562 return AVERROR_INVALIDDATA;
1563 sc->sample_sizes = av_malloc(entries * sizeof(int));
1564 if (!sc->sample_sizes)
1565 return AVERROR(ENOMEM);
1567 num_bytes = (entries*field_size+4)>>3;
1569 buf = av_malloc(num_bytes+FF_INPUT_BUFFER_PADDING_SIZE);
1571 av_freep(&sc->sample_sizes);
1572 return AVERROR(ENOMEM);
1575 if (avio_read(pb, buf, num_bytes) < num_bytes) {
1576 av_freep(&sc->sample_sizes);
1578 return AVERROR_INVALIDDATA;
1581 init_get_bits(&gb, buf, 8*num_bytes);
1583 for (i=0; i<entries; i++)
1584 sc->sample_sizes[i] = get_bits_long(&gb, field_size);
1590 static int mov_read_stts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1593 MOVStreamContext *sc;
1594 unsigned int i, entries;
1596 int64_t total_sample_count=0;
1598 if (c->fc->nb_streams < 1)
1600 st = c->fc->streams[c->fc->nb_streams-1];
1603 avio_r8(pb); /* version */
1604 avio_rb24(pb); /* flags */
1605 entries = avio_rb32(pb);
1607 av_dlog(c->fc, "track[%i].stts.entries = %i\n",
1608 c->fc->nb_streams-1, entries);
1612 if (entries >= UINT_MAX / sizeof(*sc->stts_data))
1613 return AVERROR(EINVAL);
1615 sc->stts_data = av_malloc(entries * sizeof(*sc->stts_data));
1617 return AVERROR(ENOMEM);
1619 sc->stts_count = entries;
1621 for (i=0; i<entries; i++) {
1622 int sample_duration;
1625 sample_count=avio_rb32(pb);
1626 sample_duration = avio_rb32(pb);
1627 sc->stts_data[i].count= sample_count;
1628 sc->stts_data[i].duration= sample_duration;
1630 av_dlog(c->fc, "sample_count=%d, sample_duration=%d\n",
1631 sample_count, sample_duration);
1633 duration+=(int64_t)sample_duration*sample_count;
1634 total_sample_count+=sample_count;
1637 st->nb_frames= total_sample_count;
1639 st->duration= duration;
1643 static int mov_read_ctts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1646 MOVStreamContext *sc;
1647 unsigned int i, entries;
1649 if (c->fc->nb_streams < 1)
1651 st = c->fc->streams[c->fc->nb_streams-1];
1654 avio_r8(pb); /* version */
1655 avio_rb24(pb); /* flags */
1656 entries = avio_rb32(pb);
1658 av_dlog(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
1662 if (entries >= UINT_MAX / sizeof(*sc->ctts_data))
1663 return AVERROR_INVALIDDATA;
1664 sc->ctts_data = av_malloc(entries * sizeof(*sc->ctts_data));
1666 return AVERROR(ENOMEM);
1667 sc->ctts_count = entries;
1669 for (i=0; i<entries; i++) {
1670 int count =avio_rb32(pb);
1671 int duration =avio_rb32(pb);
1673 sc->ctts_data[i].count = count;
1674 sc->ctts_data[i].duration= duration;
1676 sc->dts_shift = FFMAX(sc->dts_shift, -duration);
1679 av_dlog(c->fc, "dts shift %d\n", sc->dts_shift);
1684 static void mov_build_index(MOVContext *mov, AVStream *st)
1686 MOVStreamContext *sc = st->priv_data;
1687 int64_t current_offset;
1688 int64_t current_dts = 0;
1689 unsigned int stts_index = 0;
1690 unsigned int stsc_index = 0;
1691 unsigned int stss_index = 0;
1692 unsigned int stps_index = 0;
1694 uint64_t stream_size = 0;
1696 /* adjust first dts according to edit list */
1697 if (sc->time_offset && mov->time_scale > 0) {
1698 if (sc->time_offset < 0)
1699 sc->time_offset = av_rescale(sc->time_offset, sc->time_scale, mov->time_scale);
1700 current_dts = -sc->time_offset;
1701 if (sc->ctts_data && sc->stts_data && sc->stts_data[0].duration &&
1702 sc->ctts_data[0].duration / sc->stts_data[0].duration > 16) {
1703 /* more than 16 frames delay, dts are likely wrong
1704 this happens with files created by iMovie */
1706 st->codec->has_b_frames = 1;
1710 /* only use old uncompressed audio chunk demuxing when stts specifies it */
1711 if (!(st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
1712 sc->stts_count == 1 && sc->stts_data[0].duration == 1)) {
1713 unsigned int current_sample = 0;
1714 unsigned int stts_sample = 0;
1715 unsigned int sample_size;
1716 unsigned int distance = 0;
1717 int key_off = sc->keyframes && sc->keyframes[0] == 1;
1719 current_dts -= sc->dts_shift;
1721 if (!sc->sample_count)
1723 if (sc->sample_count >= UINT_MAX / sizeof(*st->index_entries))
1725 st->index_entries = av_malloc(sc->sample_count*sizeof(*st->index_entries));
1726 if (!st->index_entries)
1728 st->index_entries_allocated_size = sc->sample_count*sizeof(*st->index_entries);
1730 for (i = 0; i < sc->chunk_count; i++) {
1731 current_offset = sc->chunk_offsets[i];
1732 while (stsc_index + 1 < sc->stsc_count &&
1733 i + 1 == sc->stsc_data[stsc_index + 1].first)
1735 for (j = 0; j < sc->stsc_data[stsc_index].count; j++) {
1737 if (current_sample >= sc->sample_count) {
1738 av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
1742 if (!sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index]) {
1744 if (stss_index + 1 < sc->keyframe_count)
1746 } else if (sc->stps_count && current_sample+key_off == sc->stps_data[stps_index]) {
1748 if (stps_index + 1 < sc->stps_count)
1753 sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
1754 if (sc->pseudo_stream_id == -1 ||
1755 sc->stsc_data[stsc_index].id - 1 == sc->pseudo_stream_id) {
1756 AVIndexEntry *e = &st->index_entries[st->nb_index_entries++];
1757 e->pos = current_offset;
1758 e->timestamp = current_dts;
1759 e->size = sample_size;
1760 e->min_distance = distance;
1761 e->flags = keyframe ? AVINDEX_KEYFRAME : 0;
1762 av_dlog(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
1763 "size %d, distance %d, keyframe %d\n", st->index, current_sample,
1764 current_offset, current_dts, sample_size, distance, keyframe);
1767 current_offset += sample_size;
1768 stream_size += sample_size;
1769 current_dts += sc->stts_data[stts_index].duration;
1773 if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
1779 if (st->duration > 0)
1780 st->codec->bit_rate = stream_size*8*sc->time_scale/st->duration;
1782 unsigned chunk_samples, total = 0;
1784 // compute total chunk count
1785 for (i = 0; i < sc->stsc_count; i++) {
1786 unsigned count, chunk_count;
1788 chunk_samples = sc->stsc_data[i].count;
1789 if (sc->samples_per_frame && chunk_samples % sc->samples_per_frame) {
1790 av_log(mov->fc, AV_LOG_ERROR, "error unaligned chunk\n");
1794 if (sc->samples_per_frame >= 160) { // gsm
1795 count = chunk_samples / sc->samples_per_frame;
1796 } else if (sc->samples_per_frame > 1) {
1797 unsigned samples = (1024/sc->samples_per_frame)*sc->samples_per_frame;
1798 count = (chunk_samples+samples-1) / samples;
1800 count = (chunk_samples+1023) / 1024;
1803 if (i < sc->stsc_count - 1)
1804 chunk_count = sc->stsc_data[i+1].first - sc->stsc_data[i].first;
1806 chunk_count = sc->chunk_count - (sc->stsc_data[i].first - 1);
1807 total += chunk_count * count;
1810 av_dlog(mov->fc, "chunk count %d\n", total);
1811 if (total >= UINT_MAX / sizeof(*st->index_entries))
1813 st->index_entries = av_malloc(total*sizeof(*st->index_entries));
1814 if (!st->index_entries)
1816 st->index_entries_allocated_size = total*sizeof(*st->index_entries);
1819 for (i = 0; i < sc->chunk_count; i++) {
1820 current_offset = sc->chunk_offsets[i];
1821 if (stsc_index + 1 < sc->stsc_count &&
1822 i + 1 == sc->stsc_data[stsc_index + 1].first)
1824 chunk_samples = sc->stsc_data[stsc_index].count;
1826 while (chunk_samples > 0) {
1828 unsigned size, samples;
1830 if (sc->samples_per_frame >= 160) { // gsm
1831 samples = sc->samples_per_frame;
1832 size = sc->bytes_per_frame;
1834 if (sc->samples_per_frame > 1) {
1835 samples = FFMIN((1024 / sc->samples_per_frame)*
1836 sc->samples_per_frame, chunk_samples);
1837 size = (samples / sc->samples_per_frame) * sc->bytes_per_frame;
1839 samples = FFMIN(1024, chunk_samples);
1840 size = samples * sc->sample_size;
1844 if (st->nb_index_entries >= total) {
1845 av_log(mov->fc, AV_LOG_ERROR, "wrong chunk count %d\n", total);
1848 e = &st->index_entries[st->nb_index_entries++];
1849 e->pos = current_offset;
1850 e->timestamp = current_dts;
1852 e->min_distance = 0;
1853 e->flags = AVINDEX_KEYFRAME;
1854 av_dlog(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", "
1855 "size %d, duration %d\n", st->index, i, current_offset, current_dts,
1858 current_offset += size;
1859 current_dts += samples;
1860 chunk_samples -= samples;
1866 static int mov_open_dref(AVIOContext **pb, char *src, MOVDref *ref,
1867 AVIOInterruptCB *int_cb)
1869 /* try relative path, we do not try the absolute because it can leak information about our
1870 system to an attacker */
1871 if (ref->nlvl_to > 0 && ref->nlvl_from > 0) {
1872 char filename[1024];
1876 /* find a source dir */
1877 src_path = strrchr(src, '/');
1883 /* find a next level down to target */
1884 for (i = 0, l = strlen(ref->path) - 1; l >= 0; l--)
1885 if (ref->path[l] == '/') {
1886 if (i == ref->nlvl_to - 1)
1892 /* compose filename if next level down to target was found */
1893 if (i == ref->nlvl_to - 1 && src_path - src < sizeof(filename)) {
1894 memcpy(filename, src, src_path - src);
1895 filename[src_path - src] = 0;
1897 for (i = 1; i < ref->nlvl_from; i++)
1898 av_strlcat(filename, "../", 1024);
1900 av_strlcat(filename, ref->path + l + 1, 1024);
1902 if (!avio_open2(pb, filename, AVIO_FLAG_READ, int_cb, NULL))
1907 return AVERROR(ENOENT);
1910 static int mov_read_trak(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1913 MOVStreamContext *sc;
1916 st = avformat_new_stream(c->fc, NULL);
1917 if (!st) return AVERROR(ENOMEM);
1918 st->id = c->fc->nb_streams;
1919 sc = av_mallocz(sizeof(MOVStreamContext));
1920 if (!sc) return AVERROR(ENOMEM);
1923 st->codec->codec_type = AVMEDIA_TYPE_DATA;
1924 sc->ffindex = st->index;
1926 if ((ret = mov_read_default(c, pb, atom)) < 0)
1930 if (sc->chunk_count && (!sc->stts_count || !sc->stsc_count ||
1931 (!sc->sample_size && !sc->sample_count))) {
1932 av_log(c->fc, AV_LOG_ERROR, "stream %d, missing mandatory atoms, broken header\n",
1937 if (sc->time_scale <= 0) {
1938 av_log(c->fc, AV_LOG_WARNING, "stream %d, timescale not set\n", st->index);
1939 sc->time_scale = c->time_scale;
1940 if (sc->time_scale <= 0)
1944 avpriv_set_pts_info(st, 64, 1, sc->time_scale);
1946 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
1947 !st->codec->frame_size && sc->stts_count == 1) {
1948 st->codec->frame_size = av_rescale(sc->stts_data[0].duration,
1949 st->codec->sample_rate, sc->time_scale);
1950 av_dlog(c->fc, "frame size %d\n", st->codec->frame_size);
1953 mov_build_index(c, st);
1955 if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) {
1956 MOVDref *dref = &sc->drefs[sc->dref_id - 1];
1957 if (mov_open_dref(&sc->pb, c->fc->filename, dref, &c->fc->interrupt_callback) < 0)
1958 av_log(c->fc, AV_LOG_ERROR,
1959 "stream %d, error opening alias: path='%s', dir='%s', "
1960 "filename='%s', volume='%s', nlvl_from=%d, nlvl_to=%d\n",
1961 st->index, dref->path, dref->dir, dref->filename,
1962 dref->volume, dref->nlvl_from, dref->nlvl_to);
1966 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1967 if (!st->sample_aspect_ratio.num &&
1968 (st->codec->width != sc->width || st->codec->height != sc->height)) {
1969 st->sample_aspect_ratio = av_d2q(((double)st->codec->height * sc->width) /
1970 ((double)st->codec->width * sc->height), INT_MAX);
1973 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
1974 sc->time_scale*st->nb_frames, st->duration, INT_MAX);
1976 if (sc->stts_count == 1 || (sc->stts_count == 2 && sc->stts_data[1].count == 1))
1977 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den,
1978 sc->time_scale, sc->stts_data[0].duration, INT_MAX);
1981 switch (st->codec->codec_id) {
1982 #if CONFIG_H261_DECODER
1985 #if CONFIG_H263_DECODER
1988 #if CONFIG_H264_DECODER
1991 #if CONFIG_MPEG4_DECODER
1992 case CODEC_ID_MPEG4:
1994 st->codec->width = 0; /* let decoder init width/height */
1995 st->codec->height= 0;
1999 /* Do not need those anymore. */
2000 av_freep(&sc->chunk_offsets);
2001 av_freep(&sc->stsc_data);
2002 av_freep(&sc->sample_sizes);
2003 av_freep(&sc->keyframes);
2004 av_freep(&sc->stts_data);
2005 av_freep(&sc->stps_data);
2010 static int mov_read_ilst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2013 c->itunes_metadata = 1;
2014 ret = mov_read_default(c, pb, atom);
2015 c->itunes_metadata = 0;
2019 static int mov_read_meta(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2021 while (atom.size > 8) {
2022 uint32_t tag = avio_rl32(pb);
2024 if (tag == MKTAG('h','d','l','r')) {
2025 avio_seek(pb, -8, SEEK_CUR);
2027 return mov_read_default(c, pb, atom);
2033 static int mov_read_tkhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2038 int64_t disp_transform[2];
2039 int display_matrix[3][2];
2041 MOVStreamContext *sc;
2044 if (c->fc->nb_streams < 1)
2046 st = c->fc->streams[c->fc->nb_streams-1];
2049 version = avio_r8(pb);
2050 avio_rb24(pb); /* flags */
2052 MOV_TRACK_ENABLED 0x0001
2053 MOV_TRACK_IN_MOVIE 0x0002
2054 MOV_TRACK_IN_PREVIEW 0x0004
2055 MOV_TRACK_IN_POSTER 0x0008
2062 avio_rb32(pb); /* creation time */
2063 avio_rb32(pb); /* modification time */
2065 st->id = (int)avio_rb32(pb); /* track id (NOT 0 !)*/
2066 avio_rb32(pb); /* reserved */
2068 /* highlevel (considering edits) duration in movie timebase */
2069 (version == 1) ? avio_rb64(pb) : avio_rb32(pb);
2070 avio_rb32(pb); /* reserved */
2071 avio_rb32(pb); /* reserved */
2073 avio_rb16(pb); /* layer */
2074 avio_rb16(pb); /* alternate group */
2075 avio_rb16(pb); /* volume */
2076 avio_rb16(pb); /* reserved */
2078 //read in the display matrix (outlined in ISO 14496-12, Section 6.2.2)
2079 // they're kept in fixed point format through all calculations
2080 // ignore u,v,z b/c we don't need the scale factor to calc aspect ratio
2081 for (i = 0; i < 3; i++) {
2082 display_matrix[i][0] = avio_rb32(pb); // 16.16 fixed point
2083 display_matrix[i][1] = avio_rb32(pb); // 16.16 fixed point
2084 avio_rb32(pb); // 2.30 fixed point (not used)
2087 width = avio_rb32(pb); // 16.16 fixed point track width
2088 height = avio_rb32(pb); // 16.16 fixed point track height
2089 sc->width = width >> 16;
2090 sc->height = height >> 16;
2092 // transform the display width/height according to the matrix
2093 // skip this if the display matrix is the default identity matrix
2094 // or if it is rotating the picture, ex iPhone 3GS
2095 // to keep the same scale, use [width height 1<<16]
2096 if (width && height &&
2097 ((display_matrix[0][0] != 65536 ||
2098 display_matrix[1][1] != 65536) &&
2099 !display_matrix[0][1] &&
2100 !display_matrix[1][0] &&
2101 !display_matrix[2][0] && !display_matrix[2][1])) {
2102 for (i = 0; i < 2; i++)
2104 (int64_t) width * display_matrix[0][i] +
2105 (int64_t) height * display_matrix[1][i] +
2106 ((int64_t) display_matrix[2][i] << 16);
2108 //sample aspect ratio is new width/height divided by old width/height
2109 st->sample_aspect_ratio = av_d2q(
2110 ((double) disp_transform[0] * height) /
2111 ((double) disp_transform[1] * width), INT_MAX);
2116 static int mov_read_tfhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2118 MOVFragment *frag = &c->fragment;
2119 MOVTrackExt *trex = NULL;
2120 int flags, track_id, i;
2122 avio_r8(pb); /* version */
2123 flags = avio_rb24(pb);
2125 track_id = avio_rb32(pb);
2127 return AVERROR_INVALIDDATA;
2128 frag->track_id = track_id;
2129 for (i = 0; i < c->trex_count; i++)
2130 if (c->trex_data[i].track_id == frag->track_id) {
2131 trex = &c->trex_data[i];
2135 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding trex\n");
2136 return AVERROR_INVALIDDATA;
2139 if (flags & 0x01) frag->base_data_offset = avio_rb64(pb);
2140 else frag->base_data_offset = frag->moof_offset;
2141 if (flags & 0x02) frag->stsd_id = avio_rb32(pb);
2142 else frag->stsd_id = trex->stsd_id;
2144 frag->duration = flags & 0x08 ? avio_rb32(pb) : trex->duration;
2145 frag->size = flags & 0x10 ? avio_rb32(pb) : trex->size;
2146 frag->flags = flags & 0x20 ? avio_rb32(pb) : trex->flags;
2147 av_dlog(c->fc, "frag flags 0x%x\n", frag->flags);
2151 static int mov_read_chap(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2153 c->chapter_track = avio_rb32(pb);
2157 static int mov_read_trex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2161 if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data))
2162 return AVERROR_INVALIDDATA;
2163 trex = av_realloc(c->trex_data, (c->trex_count+1)*sizeof(*c->trex_data));
2165 return AVERROR(ENOMEM);
2166 c->trex_data = trex;
2167 trex = &c->trex_data[c->trex_count++];
2168 avio_r8(pb); /* version */
2169 avio_rb24(pb); /* flags */
2170 trex->track_id = avio_rb32(pb);
2171 trex->stsd_id = avio_rb32(pb);
2172 trex->duration = avio_rb32(pb);
2173 trex->size = avio_rb32(pb);
2174 trex->flags = avio_rb32(pb);
2178 static int mov_read_trun(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2180 MOVFragment *frag = &c->fragment;
2181 AVStream *st = NULL;
2182 MOVStreamContext *sc;
2186 int data_offset = 0;
2187 unsigned entries, first_sample_flags = frag->flags;
2188 int flags, distance, i;
2190 for (i = 0; i < c->fc->nb_streams; i++) {
2191 if (c->fc->streams[i]->id == frag->track_id) {
2192 st = c->fc->streams[i];
2197 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id);
2198 return AVERROR_INVALIDDATA;
2201 if (sc->pseudo_stream_id+1 != frag->stsd_id)
2203 avio_r8(pb); /* version */
2204 flags = avio_rb24(pb);
2205 entries = avio_rb32(pb);
2206 av_dlog(c->fc, "flags 0x%x entries %d\n", flags, entries);
2208 /* Always assume the presence of composition time offsets.
2209 * Without this assumption, for instance, we cannot deal with a track in fragmented movies that meet the following.
2210 * 1) in the initial movie, there are no samples.
2211 * 2) in the first movie fragment, there is only one sample without composition time offset.
2212 * 3) in the subsequent movie fragments, there are samples with composition time offset. */
2213 if (!sc->ctts_count && sc->sample_count)
2215 /* Complement ctts table if moov atom doesn't have ctts atom. */
2216 ctts_data = av_malloc(sizeof(*sc->ctts_data));
2218 return AVERROR(ENOMEM);
2219 sc->ctts_data = ctts_data;
2220 sc->ctts_data[sc->ctts_count].count = sc->sample_count;
2221 sc->ctts_data[sc->ctts_count].duration = 0;
2224 if ((uint64_t)entries+sc->ctts_count >= UINT_MAX/sizeof(*sc->ctts_data))
2225 return AVERROR_INVALIDDATA;
2226 ctts_data = av_realloc(sc->ctts_data,
2227 (entries+sc->ctts_count)*sizeof(*sc->ctts_data));
2229 return AVERROR(ENOMEM);
2230 sc->ctts_data = ctts_data;
2232 if (flags & 0x001) data_offset = avio_rb32(pb);
2233 if (flags & 0x004) first_sample_flags = avio_rb32(pb);
2234 dts = st->duration - sc->time_offset;
2235 offset = frag->base_data_offset + data_offset;
2237 av_dlog(c->fc, "first sample flags 0x%x\n", first_sample_flags);
2238 for (i = 0; i < entries; i++) {
2239 unsigned sample_size = frag->size;
2240 int sample_flags = i ? frag->flags : first_sample_flags;
2241 unsigned sample_duration = frag->duration;
2244 if (flags & 0x100) sample_duration = avio_rb32(pb);
2245 if (flags & 0x200) sample_size = avio_rb32(pb);
2246 if (flags & 0x400) sample_flags = avio_rb32(pb);
2247 sc->ctts_data[sc->ctts_count].count = 1;
2248 sc->ctts_data[sc->ctts_count].duration = (flags & 0x800) ? avio_rb32(pb) : 0;
2250 if ((keyframe = st->codec->codec_type == AVMEDIA_TYPE_AUDIO ||
2251 (flags & 0x004 && !i && !sample_flags) || sample_flags & 0x2000000))
2253 av_add_index_entry(st, offset, dts, sample_size, distance,
2254 keyframe ? AVINDEX_KEYFRAME : 0);
2255 av_dlog(c->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
2256 "size %d, distance %d, keyframe %d\n", st->index, sc->sample_count+i,
2257 offset, dts, sample_size, distance, keyframe);
2259 dts += sample_duration;
2260 offset += sample_size;
2262 frag->moof_offset = offset;
2263 st->duration = dts + sc->time_offset;
2267 /* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
2268 /* like the files created with Adobe Premiere 5.0, for samples see */
2269 /* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
2270 static int mov_read_wide(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2275 return 0; /* continue */
2276 if (avio_rb32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
2277 avio_skip(pb, atom.size - 4);
2280 atom.type = avio_rl32(pb);
2282 if (atom.type != MKTAG('m','d','a','t')) {
2283 avio_skip(pb, atom.size);
2286 err = mov_read_mdat(c, pb, atom);
2290 static int mov_read_cmov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2295 uint8_t *moov_data; /* uncompressed data */
2296 long cmov_len, moov_len;
2299 avio_rb32(pb); /* dcom atom */
2300 if (avio_rl32(pb) != MKTAG('d','c','o','m'))
2301 return AVERROR_INVALIDDATA;
2302 if (avio_rl32(pb) != MKTAG('z','l','i','b')) {
2303 av_log(c->fc, AV_LOG_ERROR, "unknown compression for cmov atom !");
2304 return AVERROR_INVALIDDATA;
2306 avio_rb32(pb); /* cmvd atom */
2307 if (avio_rl32(pb) != MKTAG('c','m','v','d'))
2308 return AVERROR_INVALIDDATA;
2309 moov_len = avio_rb32(pb); /* uncompressed size */
2310 cmov_len = atom.size - 6 * 4;
2312 cmov_data = av_malloc(cmov_len);
2314 return AVERROR(ENOMEM);
2315 moov_data = av_malloc(moov_len);
2318 return AVERROR(ENOMEM);
2320 avio_read(pb, cmov_data, cmov_len);
2321 if (uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
2322 goto free_and_return;
2323 if (ffio_init_context(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
2324 goto free_and_return;
2325 atom.type = MKTAG('m','o','o','v');
2326 atom.size = moov_len;
2327 ret = mov_read_default(c, &ctx, atom);
2333 av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
2334 return AVERROR(ENOSYS);
2338 /* edit list atom */
2339 static int mov_read_elst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2341 MOVStreamContext *sc;
2342 int i, edit_count, version;
2344 if (c->fc->nb_streams < 1)
2346 sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
2348 version = avio_r8(pb); /* version */
2349 avio_rb24(pb); /* flags */
2350 edit_count = avio_rb32(pb); /* entries */
2352 if ((uint64_t)edit_count*12+8 > atom.size)
2353 return AVERROR_INVALIDDATA;
2355 for (i=0; i<edit_count; i++){
2359 duration = avio_rb64(pb);
2360 time = avio_rb64(pb);
2362 duration = avio_rb32(pb); /* segment duration */
2363 time = (int32_t)avio_rb32(pb); /* media time */
2365 avio_rb32(pb); /* Media rate */
2366 if (i == 0 && time >= -1) {
2367 sc->time_offset = time != -1 ? time : -duration;
2372 av_log(c->fc, AV_LOG_WARNING, "multiple edit list entries, "
2373 "a/v desync might occur, patch welcome\n");
2375 av_dlog(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, edit_count);
2379 static const MOVParseTableEntry mov_default_parse_table[] = {
2380 { MKTAG('a','v','s','s'), mov_read_extradata },
2381 { MKTAG('c','h','p','l'), mov_read_chpl },
2382 { MKTAG('c','o','6','4'), mov_read_stco },
2383 { MKTAG('c','t','t','s'), mov_read_ctts }, /* composition time to sample */
2384 { MKTAG('d','i','n','f'), mov_read_default },
2385 { MKTAG('d','r','e','f'), mov_read_dref },
2386 { MKTAG('e','d','t','s'), mov_read_default },
2387 { MKTAG('e','l','s','t'), mov_read_elst },
2388 { MKTAG('e','n','d','a'), mov_read_enda },
2389 { MKTAG('f','i','e','l'), mov_read_fiel },
2390 { MKTAG('f','t','y','p'), mov_read_ftyp },
2391 { MKTAG('g','l','b','l'), mov_read_glbl },
2392 { MKTAG('h','d','l','r'), mov_read_hdlr },
2393 { MKTAG('i','l','s','t'), mov_read_ilst },
2394 { MKTAG('j','p','2','h'), mov_read_extradata },
2395 { MKTAG('m','d','a','t'), mov_read_mdat },
2396 { MKTAG('m','d','h','d'), mov_read_mdhd },
2397 { MKTAG('m','d','i','a'), mov_read_default },
2398 { MKTAG('m','e','t','a'), mov_read_meta },
2399 { MKTAG('m','i','n','f'), mov_read_default },
2400 { MKTAG('m','o','o','f'), mov_read_moof },
2401 { MKTAG('m','o','o','v'), mov_read_moov },
2402 { MKTAG('m','v','e','x'), mov_read_default },
2403 { MKTAG('m','v','h','d'), mov_read_mvhd },
2404 { MKTAG('S','M','I',' '), mov_read_smi }, /* Sorenson extension ??? */
2405 { MKTAG('a','l','a','c'), mov_read_extradata }, /* alac specific atom */
2406 { MKTAG('a','v','c','C'), mov_read_glbl },
2407 { MKTAG('p','a','s','p'), mov_read_pasp },
2408 { MKTAG('s','t','b','l'), mov_read_default },
2409 { MKTAG('s','t','c','o'), mov_read_stco },
2410 { MKTAG('s','t','p','s'), mov_read_stps },
2411 { MKTAG('s','t','r','f'), mov_read_strf },
2412 { MKTAG('s','t','s','c'), mov_read_stsc },
2413 { MKTAG('s','t','s','d'), mov_read_stsd }, /* sample description */
2414 { MKTAG('s','t','s','s'), mov_read_stss }, /* sync sample */
2415 { MKTAG('s','t','s','z'), mov_read_stsz }, /* sample size */
2416 { MKTAG('s','t','t','s'), mov_read_stts },
2417 { MKTAG('s','t','z','2'), mov_read_stsz }, /* compact sample size */
2418 { MKTAG('t','k','h','d'), mov_read_tkhd }, /* track header */
2419 { MKTAG('t','f','h','d'), mov_read_tfhd }, /* track fragment header */
2420 { MKTAG('t','r','a','k'), mov_read_trak },
2421 { MKTAG('t','r','a','f'), mov_read_default },
2422 { MKTAG('t','r','e','f'), mov_read_default },
2423 { MKTAG('c','h','a','p'), mov_read_chap },
2424 { MKTAG('t','r','e','x'), mov_read_trex },
2425 { MKTAG('t','r','u','n'), mov_read_trun },
2426 { MKTAG('u','d','t','a'), mov_read_default },
2427 { MKTAG('w','a','v','e'), mov_read_wave },
2428 { MKTAG('e','s','d','s'), mov_read_esds },
2429 { MKTAG('d','a','c','3'), mov_read_dac3 }, /* AC-3 info */
2430 { MKTAG('w','i','d','e'), mov_read_wide }, /* place holder */
2431 { MKTAG('w','f','e','x'), mov_read_wfex },
2432 { MKTAG('c','m','o','v'), mov_read_cmov },
2433 { MKTAG('c','h','a','n'), mov_read_chan }, /* channel layout */
2437 static int mov_probe(AVProbeData *p)
2439 unsigned int offset;
2443 /* check file header */
2446 /* ignore invalid offset */
2447 if ((offset + 8) > (unsigned int)p->buf_size)
2449 tag = AV_RL32(p->buf + offset + 4);
2451 /* check for obvious tags */
2452 case MKTAG('j','P',' ',' '): /* jpeg 2000 signature */
2453 case MKTAG('m','o','o','v'):
2454 case MKTAG('m','d','a','t'):
2455 case MKTAG('p','n','o','t'): /* detect movs with preview pics like ew.mov and april.mov */
2456 case MKTAG('u','d','t','a'): /* Packet Video PVAuthor adds this and a lot of more junk */
2457 case MKTAG('f','t','y','p'):
2458 return AVPROBE_SCORE_MAX;
2459 /* those are more common words, so rate then a bit less */
2460 case MKTAG('e','d','i','w'): /* xdcam files have reverted first tags */
2461 case MKTAG('w','i','d','e'):
2462 case MKTAG('f','r','e','e'):
2463 case MKTAG('j','u','n','k'):
2464 case MKTAG('p','i','c','t'):
2465 return AVPROBE_SCORE_MAX - 5;
2466 case MKTAG(0x82,0x82,0x7f,0x7d):
2467 case MKTAG('s','k','i','p'):
2468 case MKTAG('u','u','i','d'):
2469 case MKTAG('p','r','f','l'):
2470 offset = AV_RB32(p->buf+offset) + offset;
2471 /* if we only find those cause probedata is too small at least rate them */
2472 score = AVPROBE_SCORE_MAX - 50;
2475 /* unrecognized tag */
2481 // must be done after parsing all trak because there's no order requirement
2482 static void mov_read_chapters(AVFormatContext *s)
2484 MOVContext *mov = s->priv_data;
2485 AVStream *st = NULL;
2486 MOVStreamContext *sc;
2490 for (i = 0; i < s->nb_streams; i++)
2491 if (s->streams[i]->id == mov->chapter_track) {
2496 av_log(s, AV_LOG_ERROR, "Referenced QT chapter track not found\n");
2500 st->discard = AVDISCARD_ALL;
2502 cur_pos = avio_tell(sc->pb);
2504 for (i = 0; i < st->nb_index_entries; i++) {
2505 AVIndexEntry *sample = &st->index_entries[i];
2506 int64_t end = i+1 < st->nb_index_entries ? st->index_entries[i+1].timestamp : st->duration;
2511 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
2512 av_log(s, AV_LOG_ERROR, "Chapter %d not found in file\n", i);
2516 // the first two bytes are the length of the title
2517 len = avio_rb16(sc->pb);
2518 if (len > sample->size-2)
2520 title_len = 2*len + 1;
2521 if (!(title = av_mallocz(title_len)))
2524 // The samples could theoretically be in any encoding if there's an encd
2525 // atom following, but in practice are only utf-8 or utf-16, distinguished
2526 // instead by the presence of a BOM
2530 ch = avio_rb16(sc->pb);
2532 avio_get_str16be(sc->pb, len, title, title_len);
2533 else if (ch == 0xfffe)
2534 avio_get_str16le(sc->pb, len, title, title_len);
2537 if (len == 1 || len == 2)
2540 avio_get_str(sc->pb, len - 2, title + 2, title_len - 2);
2544 avpriv_new_chapter(s, i, st->time_base, sample->timestamp, end, title);
2548 avio_seek(sc->pb, cur_pos, SEEK_SET);
2551 static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
2553 MOVContext *mov = s->priv_data;
2554 AVIOContext *pb = s->pb;
2556 MOVAtom atom = { AV_RL32("root") };
2559 /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
2561 atom.size = avio_size(pb);
2563 atom.size = INT64_MAX;
2565 /* check MOV header */
2566 if ((err = mov_read_default(mov, pb, atom)) < 0) {
2567 av_log(s, AV_LOG_ERROR, "error reading header: %d\n", err);
2570 if (!mov->found_moov) {
2571 av_log(s, AV_LOG_ERROR, "moov atom not found\n");
2572 return AVERROR_INVALIDDATA;
2574 av_dlog(mov->fc, "on_parse_exit_offset=%"PRId64"\n", avio_tell(pb));
2576 if (pb->seekable && mov->chapter_track > 0)
2577 mov_read_chapters(s);
2582 static AVIndexEntry *mov_find_next_sample(AVFormatContext *s, AVStream **st)
2584 AVIndexEntry *sample = NULL;
2585 int64_t best_dts = INT64_MAX;
2587 for (i = 0; i < s->nb_streams; i++) {
2588 AVStream *avst = s->streams[i];
2589 MOVStreamContext *msc = avst->priv_data;
2590 if (msc->pb && msc->current_sample < avst->nb_index_entries) {
2591 AVIndexEntry *current_sample = &avst->index_entries[msc->current_sample];
2592 int64_t dts = av_rescale(current_sample->timestamp, AV_TIME_BASE, msc->time_scale);
2593 av_dlog(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
2594 if (!sample || (!s->pb->seekable && current_sample->pos < sample->pos) ||
2596 ((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb &&
2597 ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
2598 (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) {
2599 sample = current_sample;
2608 static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
2610 MOVContext *mov = s->priv_data;
2611 MOVStreamContext *sc;
2612 AVIndexEntry *sample;
2613 AVStream *st = NULL;
2616 sample = mov_find_next_sample(s, &st);
2618 mov->found_mdat = 0;
2619 if (s->pb->seekable||
2620 mov_read_default(mov, s->pb, (MOVAtom){ AV_RL32("root"), INT64_MAX }) < 0 ||
2623 av_dlog(s, "read fragments, offset 0x%"PRIx64"\n", avio_tell(s->pb));
2627 /* must be done just before reading, to avoid infinite loop on sample */
2628 sc->current_sample++;
2630 if (st->discard != AVDISCARD_ALL) {
2631 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
2632 av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
2633 sc->ffindex, sample->pos);
2634 return AVERROR_INVALIDDATA;
2636 ret = av_get_packet(sc->pb, pkt, sample->size);
2639 if (sc->has_palette) {
2642 pal = av_packet_new_side_data(pkt, AV_PKT_DATA_PALETTE, AVPALETTE_SIZE);
2644 av_log(mov->fc, AV_LOG_ERROR, "Cannot append palette to packet\n");
2646 memcpy(pal, sc->palette, AVPALETTE_SIZE);
2647 sc->has_palette = 0;
2650 #if CONFIG_DV_DEMUXER
2651 if (mov->dv_demux && sc->dv_audio_container) {
2652 avpriv_dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size);
2655 ret = avpriv_dv_get_packet(mov->dv_demux, pkt);
2662 pkt->stream_index = sc->ffindex;
2663 pkt->dts = sample->timestamp;
2664 if (sc->ctts_data) {
2665 pkt->pts = pkt->dts + sc->dts_shift + sc->ctts_data[sc->ctts_index].duration;
2666 /* update ctts context */
2668 if (sc->ctts_index < sc->ctts_count &&
2669 sc->ctts_data[sc->ctts_index].count == sc->ctts_sample) {
2671 sc->ctts_sample = 0;
2674 pkt->dts = AV_NOPTS_VALUE;
2676 int64_t next_dts = (sc->current_sample < st->nb_index_entries) ?
2677 st->index_entries[sc->current_sample].timestamp : st->duration;
2678 pkt->duration = next_dts - pkt->dts;
2679 pkt->pts = pkt->dts;
2681 if (st->discard == AVDISCARD_ALL)
2683 pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? AV_PKT_FLAG_KEY : 0;
2684 pkt->pos = sample->pos;
2685 av_dlog(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n",
2686 pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
2690 static int mov_seek_stream(AVFormatContext *s, AVStream *st, int64_t timestamp, int flags)
2692 MOVStreamContext *sc = st->priv_data;
2693 int sample, time_sample;
2696 sample = av_index_search_timestamp(st, timestamp, flags);
2697 av_dlog(s, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
2698 if (sample < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
2700 if (sample < 0) /* not sure what to do */
2701 return AVERROR_INVALIDDATA;
2702 sc->current_sample = sample;
2703 av_dlog(s, "stream %d, found sample %d\n", st->index, sc->current_sample);
2704 /* adjust ctts index */
2705 if (sc->ctts_data) {
2707 for (i = 0; i < sc->ctts_count; i++) {
2708 int next = time_sample + sc->ctts_data[i].count;
2709 if (next > sc->current_sample) {
2711 sc->ctts_sample = sc->current_sample - time_sample;
2720 static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
2723 int64_t seek_timestamp, timestamp;
2727 if (stream_index >= s->nb_streams)
2728 return AVERROR_INVALIDDATA;
2729 if (sample_time < 0)
2732 st = s->streams[stream_index];
2733 sample = mov_seek_stream(s, st, sample_time, flags);
2737 /* adjust seek timestamp to found sample timestamp */
2738 seek_timestamp = st->index_entries[sample].timestamp;
2740 for (i = 0; i < s->nb_streams; i++) {
2742 if (stream_index == i)
2745 timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
2746 mov_seek_stream(s, st, timestamp, flags);
2751 static int mov_read_close(AVFormatContext *s)
2753 MOVContext *mov = s->priv_data;
2756 for (i = 0; i < s->nb_streams; i++) {
2757 AVStream *st = s->streams[i];
2758 MOVStreamContext *sc = st->priv_data;
2760 av_freep(&sc->ctts_data);
2761 for (j = 0; j < sc->drefs_count; j++) {
2762 av_freep(&sc->drefs[j].path);
2763 av_freep(&sc->drefs[j].dir);
2765 av_freep(&sc->drefs);
2766 if (sc->pb && sc->pb != s->pb)
2770 if (mov->dv_demux) {
2771 for (i = 0; i < mov->dv_fctx->nb_streams; i++) {
2772 av_freep(&mov->dv_fctx->streams[i]->codec);
2773 av_freep(&mov->dv_fctx->streams[i]);
2775 av_freep(&mov->dv_fctx);
2776 av_freep(&mov->dv_demux);
2779 av_freep(&mov->trex_data);
2784 AVInputFormat ff_mov_demuxer = {
2785 .name = "mov,mp4,m4a,3gp,3g2,mj2",
2786 .long_name = NULL_IF_CONFIG_SMALL("QuickTime/MPEG-4/Motion JPEG 2000 format"),
2787 .priv_data_size = sizeof(MOVContext),
2788 .read_probe = mov_probe,
2789 .read_header = mov_read_header,
2790 .read_packet = mov_read_packet,
2791 .read_close = mov_read_close,
2792 .read_seek = mov_read_seek,