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 c->next_root_atom = start_pos + a.size;
358 left = a.size - avio_tell(pb) + start_pos;
359 if (left > 0) /* skip garbage at atom end */
363 total_size += a.size;
366 if (total_size < atom.size && atom.size < 0x7ffff)
367 avio_skip(pb, atom.size - total_size);
372 static int mov_read_dref(MOVContext *c, AVIOContext *pb, MOVAtom atom)
375 MOVStreamContext *sc;
378 if (c->fc->nb_streams < 1)
380 st = c->fc->streams[c->fc->nb_streams-1];
383 avio_rb32(pb); // version + flags
384 entries = avio_rb32(pb);
385 if (entries >= UINT_MAX / sizeof(*sc->drefs))
386 return AVERROR_INVALIDDATA;
387 sc->drefs = av_mallocz(entries * sizeof(*sc->drefs));
389 return AVERROR(ENOMEM);
390 sc->drefs_count = entries;
392 for (i = 0; i < sc->drefs_count; i++) {
393 MOVDref *dref = &sc->drefs[i];
394 uint32_t size = avio_rb32(pb);
395 int64_t next = avio_tell(pb) + size - 4;
398 return AVERROR_INVALIDDATA;
400 dref->type = avio_rl32(pb);
401 avio_rb32(pb); // version + flags
402 av_dlog(c->fc, "type %.4s size %d\n", (char*)&dref->type, size);
404 if (dref->type == MKTAG('a','l','i','s') && size > 150) {
405 /* macintosh alias record */
406 uint16_t volume_len, len;
411 volume_len = avio_r8(pb);
412 volume_len = FFMIN(volume_len, 27);
413 avio_read(pb, dref->volume, 27);
414 dref->volume[volume_len] = 0;
415 av_log(c->fc, AV_LOG_DEBUG, "volume %s, len %d\n", dref->volume, volume_len);
420 len = FFMIN(len, 63);
421 avio_read(pb, dref->filename, 63);
422 dref->filename[len] = 0;
423 av_log(c->fc, AV_LOG_DEBUG, "filename %s, len %d\n", dref->filename, len);
427 /* read next level up_from_alias/down_to_target */
428 dref->nlvl_from = avio_rb16(pb);
429 dref->nlvl_to = avio_rb16(pb);
430 av_log(c->fc, AV_LOG_DEBUG, "nlvl from %d, nlvl to %d\n",
431 dref->nlvl_from, dref->nlvl_to);
435 for (type = 0; type != -1 && avio_tell(pb) < next; ) {
436 type = avio_rb16(pb);
438 av_log(c->fc, AV_LOG_DEBUG, "type %d, len %d\n", type, len);
441 if (type == 2) { // absolute path
443 dref->path = av_mallocz(len+1);
445 return AVERROR(ENOMEM);
446 avio_read(pb, dref->path, len);
447 if (len > volume_len && !strncmp(dref->path, dref->volume, volume_len)) {
449 memmove(dref->path, dref->path+volume_len, len);
452 for (j = 0; j < len; j++)
453 if (dref->path[j] == ':')
455 av_log(c->fc, AV_LOG_DEBUG, "path %s\n", dref->path);
456 } else if (type == 0) { // directory name
458 dref->dir = av_malloc(len+1);
460 return AVERROR(ENOMEM);
461 avio_read(pb, dref->dir, len);
463 for (j = 0; j < len; j++)
464 if (dref->dir[j] == ':')
466 av_log(c->fc, AV_LOG_DEBUG, "dir %s\n", dref->dir);
471 avio_seek(pb, next, SEEK_SET);
476 static int mov_read_hdlr(MOVContext *c, AVIOContext *pb, MOVAtom atom)
480 uint32_t av_unused ctype;
482 if (c->fc->nb_streams < 1) // meta before first trak
485 st = c->fc->streams[c->fc->nb_streams-1];
487 avio_r8(pb); /* version */
488 avio_rb24(pb); /* flags */
491 ctype = avio_rl32(pb);
492 type = avio_rl32(pb); /* component subtype */
494 av_dlog(c->fc, "ctype= %.4s (0x%08x)\n", (char*)&ctype, ctype);
495 av_dlog(c->fc, "stype= %.4s\n", (char*)&type);
497 if (type == MKTAG('v','i','d','e'))
498 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
499 else if (type == MKTAG('s','o','u','n'))
500 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
501 else if (type == MKTAG('m','1','a',' '))
502 st->codec->codec_id = CODEC_ID_MP2;
503 else if ((type == MKTAG('s','u','b','p')) || (type == MKTAG('c','l','c','p')))
504 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
506 avio_rb32(pb); /* component manufacture */
507 avio_rb32(pb); /* component flags */
508 avio_rb32(pb); /* component flags mask */
513 int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb, MOVAtom atom)
518 if (fc->nb_streams < 1)
520 st = fc->streams[fc->nb_streams-1];
522 avio_rb32(pb); /* version + flags */
523 ff_mp4_read_descr(fc, pb, &tag);
524 if (tag == MP4ESDescrTag) {
525 ff_mp4_parse_es_descr(pb, NULL);
527 avio_rb16(pb); /* ID */
529 ff_mp4_read_descr(fc, pb, &tag);
530 if (tag == MP4DecConfigDescrTag)
531 ff_mp4_read_dec_config_descr(fc, st, pb);
535 static int mov_read_esds(MOVContext *c, AVIOContext *pb, MOVAtom atom)
537 return ff_mov_read_esds(c->fc, pb, atom);
540 static int mov_read_dac3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
543 int ac3info, acmod, lfeon, bsmod;
545 if (c->fc->nb_streams < 1)
547 st = c->fc->streams[c->fc->nb_streams-1];
549 ac3info = avio_rb24(pb);
550 bsmod = (ac3info >> 14) & 0x7;
551 acmod = (ac3info >> 11) & 0x7;
552 lfeon = (ac3info >> 10) & 0x1;
553 st->codec->channels = ((int[]){2,1,2,3,3,4,4,5})[acmod] + lfeon;
554 st->codec->audio_service_type = bsmod;
555 if (st->codec->channels > 1 && bsmod == 0x7)
556 st->codec->audio_service_type = AV_AUDIO_SERVICE_TYPE_KARAOKE;
561 static int mov_read_chan(MOVContext *c, AVIOContext *pb, MOVAtom atom)
565 uint32_t flags, layout_tag, bitmap, num_descr, label_mask;
568 if (c->fc->nb_streams < 1)
570 st = c->fc->streams[c->fc->nb_streams-1];
575 version = avio_r8(pb);
576 flags = avio_rb24(pb);
578 layout_tag = avio_rb32(pb);
579 bitmap = avio_rb32(pb);
580 num_descr = avio_rb32(pb);
582 if (atom.size < 16ULL + num_descr * 20ULL)
585 av_dlog(c->fc, "chan: size=%ld version=%u flags=%u layout=%u bitmap=%u num_descr=%u\n",
586 atom.size, version, flags, layout_tag, bitmap, num_descr);
589 for (i = 0; i < num_descr; i++) {
590 uint32_t label, cflags;
591 label = avio_rb32(pb); // mChannelLabel
592 cflags = avio_rb32(pb); // mChannelFlags
593 avio_rl32(pb); // mCoordinates[0]
594 avio_rl32(pb); // mCoordinates[1]
595 avio_rl32(pb); // mCoordinates[2]
596 if (layout_tag == 0) {
597 uint32_t mask_incr = ff_mov_get_channel_label(label);
598 if (mask_incr == 0) {
602 label_mask |= mask_incr;
606 st->codec->channel_layout = label_mask;
608 st->codec->channel_layout = ff_mov_get_channel_layout(layout_tag, bitmap);
613 static int mov_read_wfex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
617 if (c->fc->nb_streams < 1)
619 st = c->fc->streams[c->fc->nb_streams-1];
621 ff_get_wav_header(pb, st->codec, atom.size);
626 static int mov_read_pasp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
628 const int num = avio_rb32(pb);
629 const int den = avio_rb32(pb);
632 if (c->fc->nb_streams < 1)
634 st = c->fc->streams[c->fc->nb_streams-1];
636 if ((st->sample_aspect_ratio.den != 1 || st->sample_aspect_ratio.num) && // default
637 (den != st->sample_aspect_ratio.den || num != st->sample_aspect_ratio.num)) {
638 av_log(c->fc, AV_LOG_WARNING,
639 "sample aspect ratio already set to %d:%d, ignoring 'pasp' atom (%d:%d)\n",
640 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
642 } else if (den != 0) {
643 st->sample_aspect_ratio.num = num;
644 st->sample_aspect_ratio.den = den;
649 /* this atom contains actual media data */
650 static int mov_read_mdat(MOVContext *c, AVIOContext *pb, MOVAtom atom)
652 if (atom.size == 0) /* wrong one (MP4) */
655 return 0; /* now go for moov */
658 /* read major brand, minor version and compatible brands and store them as metadata */
659 static int mov_read_ftyp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
663 char minor_ver_str[11]; /* 32 bit integer -> 10 digits + null */
664 char* comp_brands_str;
665 uint8_t type[5] = {0};
667 avio_read(pb, type, 4);
668 if (strcmp(type, "qt "))
670 av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
671 av_dict_set(&c->fc->metadata, "major_brand", type, 0);
672 minor_ver = avio_rb32(pb); /* minor version */
673 snprintf(minor_ver_str, sizeof(minor_ver_str), "%d", minor_ver);
674 av_dict_set(&c->fc->metadata, "minor_version", minor_ver_str, 0);
676 comp_brand_size = atom.size - 8;
677 if (comp_brand_size < 0)
678 return AVERROR_INVALIDDATA;
679 comp_brands_str = av_malloc(comp_brand_size + 1); /* Add null terminator */
680 if (!comp_brands_str)
681 return AVERROR(ENOMEM);
682 avio_read(pb, comp_brands_str, comp_brand_size);
683 comp_brands_str[comp_brand_size] = 0;
684 av_dict_set(&c->fc->metadata, "compatible_brands", comp_brands_str, 0);
685 av_freep(&comp_brands_str);
690 /* this atom should contain all header atoms */
691 static int mov_read_moov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
695 if ((ret = mov_read_default(c, pb, atom)) < 0)
697 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
698 /* so we don't parse the whole file if over a network */
700 return 0; /* now go for mdat */
703 static int mov_read_moof(MOVContext *c, AVIOContext *pb, MOVAtom atom)
705 c->fragment.moof_offset = avio_tell(pb) - 8;
706 av_dlog(c->fc, "moof offset %"PRIx64"\n", c->fragment.moof_offset);
707 return mov_read_default(c, pb, atom);
710 static void mov_metadata_creation_time(AVDictionary **metadata, time_t time)
715 time -= 2082844800; /* seconds between 1904-01-01 and Epoch */
718 strftime(buffer, sizeof(buffer), "%Y-%m-%d %H:%M:%S", ptm);
719 av_dict_set(metadata, "creation_time", buffer, 0);
723 static int mov_read_mdhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
726 MOVStreamContext *sc;
728 char language[4] = {0};
730 time_t creation_time;
732 if (c->fc->nb_streams < 1)
734 st = c->fc->streams[c->fc->nb_streams-1];
737 version = avio_r8(pb);
739 av_log_ask_for_sample(c, "unsupported version %d\n", version);
740 return AVERROR_PATCHWELCOME;
742 avio_rb24(pb); /* flags */
744 creation_time = avio_rb64(pb);
747 creation_time = avio_rb32(pb);
748 avio_rb32(pb); /* modification time */
750 mov_metadata_creation_time(&st->metadata, creation_time);
752 sc->time_scale = avio_rb32(pb);
753 st->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
755 lang = avio_rb16(pb); /* language */
756 if (ff_mov_lang_to_iso639(lang, language))
757 av_dict_set(&st->metadata, "language", language, 0);
758 avio_rb16(pb); /* quality */
763 static int mov_read_mvhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
765 time_t creation_time;
766 int version = avio_r8(pb); /* version */
767 avio_rb24(pb); /* flags */
770 creation_time = avio_rb64(pb);
773 creation_time = avio_rb32(pb);
774 avio_rb32(pb); /* modification time */
776 mov_metadata_creation_time(&c->fc->metadata, creation_time);
777 c->time_scale = avio_rb32(pb); /* time scale */
779 av_dlog(c->fc, "time scale = %i\n", c->time_scale);
781 c->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
782 avio_rb32(pb); /* preferred scale */
784 avio_rb16(pb); /* preferred volume */
786 avio_skip(pb, 10); /* reserved */
788 avio_skip(pb, 36); /* display matrix */
790 avio_rb32(pb); /* preview time */
791 avio_rb32(pb); /* preview duration */
792 avio_rb32(pb); /* poster time */
793 avio_rb32(pb); /* selection time */
794 avio_rb32(pb); /* selection duration */
795 avio_rb32(pb); /* current time */
796 avio_rb32(pb); /* next track ID */
801 static int mov_read_smi(MOVContext *c, AVIOContext *pb, MOVAtom atom)
805 if (c->fc->nb_streams < 1)
807 st = c->fc->streams[c->fc->nb_streams-1];
809 if ((uint64_t)atom.size > (1<<30))
810 return AVERROR_INVALIDDATA;
812 // currently SVQ3 decoder expect full STSD header - so let's fake it
813 // this should be fixed and just SMI header should be passed
814 av_free(st->codec->extradata);
815 st->codec->extradata = av_mallocz(atom.size + 0x5a + FF_INPUT_BUFFER_PADDING_SIZE);
816 if (!st->codec->extradata)
817 return AVERROR(ENOMEM);
818 st->codec->extradata_size = 0x5a + atom.size;
819 memcpy(st->codec->extradata, "SVQ3", 4); // fake
820 avio_read(pb, st->codec->extradata + 0x5a, atom.size);
821 av_dlog(c->fc, "Reading SMI %"PRId64" %s\n", atom.size, st->codec->extradata + 0x5a);
825 static int mov_read_enda(MOVContext *c, AVIOContext *pb, MOVAtom atom)
830 if (c->fc->nb_streams < 1)
832 st = c->fc->streams[c->fc->nb_streams-1];
834 little_endian = avio_rb16(pb);
835 av_dlog(c->fc, "enda %d\n", little_endian);
836 if (little_endian == 1) {
837 switch (st->codec->codec_id) {
838 case CODEC_ID_PCM_S24BE:
839 st->codec->codec_id = CODEC_ID_PCM_S24LE;
841 case CODEC_ID_PCM_S32BE:
842 st->codec->codec_id = CODEC_ID_PCM_S32LE;
844 case CODEC_ID_PCM_F32BE:
845 st->codec->codec_id = CODEC_ID_PCM_F32LE;
847 case CODEC_ID_PCM_F64BE:
848 st->codec->codec_id = CODEC_ID_PCM_F64LE;
857 static int mov_read_fiel(MOVContext *c, AVIOContext *pb, MOVAtom atom)
860 unsigned mov_field_order;
861 enum AVFieldOrder decoded_field_order = AV_FIELD_UNKNOWN;
863 if (c->fc->nb_streams < 1) // will happen with jp2 files
865 st = c->fc->streams[c->fc->nb_streams-1];
867 return AVERROR_INVALIDDATA;
868 mov_field_order = avio_rb16(pb);
869 if ((mov_field_order & 0xFF00) == 0x0100)
870 decoded_field_order = AV_FIELD_PROGRESSIVE;
871 else if ((mov_field_order & 0xFF00) == 0x0200) {
872 switch (mov_field_order & 0xFF) {
873 case 0x01: decoded_field_order = AV_FIELD_TT;
875 case 0x06: decoded_field_order = AV_FIELD_BB;
877 case 0x09: decoded_field_order = AV_FIELD_TB;
879 case 0x0E: decoded_field_order = AV_FIELD_BT;
883 if (decoded_field_order == AV_FIELD_UNKNOWN && mov_field_order) {
884 av_log(NULL, AV_LOG_ERROR, "Unknown MOV field order 0x%04x\n", mov_field_order);
886 st->codec->field_order = decoded_field_order;
891 /* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
892 static int mov_read_extradata(MOVContext *c, AVIOContext *pb, MOVAtom atom)
898 if (c->fc->nb_streams < 1) // will happen with jp2 files
900 st= c->fc->streams[c->fc->nb_streams-1];
901 size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
902 if (size > INT_MAX || (uint64_t)atom.size > INT_MAX)
903 return AVERROR_INVALIDDATA;
904 buf= av_realloc(st->codec->extradata, size);
906 return AVERROR(ENOMEM);
907 st->codec->extradata= buf;
908 buf+= st->codec->extradata_size;
909 st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE;
910 AV_WB32( buf , atom.size + 8);
911 AV_WL32( buf + 4, atom.type);
912 avio_read(pb, buf + 8, atom.size);
916 static int mov_read_wave(MOVContext *c, AVIOContext *pb, MOVAtom atom)
920 if (c->fc->nb_streams < 1)
922 st = c->fc->streams[c->fc->nb_streams-1];
924 if ((uint64_t)atom.size > (1<<30))
925 return AVERROR_INVALIDDATA;
927 if (st->codec->codec_id == CODEC_ID_QDM2 || st->codec->codec_id == CODEC_ID_QDMC) {
928 // pass all frma atom to codec, needed at least for QDMC and QDM2
929 av_free(st->codec->extradata);
930 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
931 if (!st->codec->extradata)
932 return AVERROR(ENOMEM);
933 st->codec->extradata_size = atom.size;
934 avio_read(pb, st->codec->extradata, atom.size);
935 } else if (atom.size > 8) { /* to read frma, esds atoms */
937 if ((ret = mov_read_default(c, pb, atom)) < 0)
940 avio_skip(pb, atom.size);
945 * This function reads atom content and puts data in extradata without tag
946 * nor size unlike mov_read_extradata.
948 static int mov_read_glbl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
952 if (c->fc->nb_streams < 1)
954 st = c->fc->streams[c->fc->nb_streams-1];
956 if ((uint64_t)atom.size > (1<<30))
957 return AVERROR_INVALIDDATA;
959 if (atom.size >= 10) {
960 // Broken files created by legacy versions of Libav and FFmpeg will
961 // wrap a whole fiel atom inside of a glbl atom.
962 unsigned size = avio_rb32(pb);
963 unsigned type = avio_rl32(pb);
964 avio_seek(pb, -8, SEEK_CUR);
965 if (type == MKTAG('f','i','e','l') && size == atom.size)
966 return mov_read_default(c, pb, atom);
968 av_free(st->codec->extradata);
969 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
970 if (!st->codec->extradata)
971 return AVERROR(ENOMEM);
972 st->codec->extradata_size = atom.size;
973 avio_read(pb, st->codec->extradata, atom.size);
977 static int mov_read_dvc1(MOVContext *c, AVIOContext *pb, MOVAtom atom)
980 uint8_t profile_level;
982 if (c->fc->nb_streams < 1)
984 st = c->fc->streams[c->fc->nb_streams-1];
986 if (atom.size >= (1<<28) || atom.size < 7)
987 return AVERROR_INVALIDDATA;
989 profile_level = avio_r8(pb);
990 if (profile_level & 0xf0 != 0xc0)
993 av_free(st->codec->extradata);
994 st->codec->extradata = av_mallocz(atom.size - 7 + FF_INPUT_BUFFER_PADDING_SIZE);
995 if (!st->codec->extradata)
996 return AVERROR(ENOMEM);
997 st->codec->extradata_size = atom.size - 7;
998 avio_seek(pb, 6, SEEK_CUR);
999 avio_read(pb, st->codec->extradata, st->codec->extradata_size);
1004 * An strf atom is a BITMAPINFOHEADER struct. This struct is 40 bytes itself,
1005 * but can have extradata appended at the end after the 40 bytes belonging
1008 static int mov_read_strf(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1012 if (c->fc->nb_streams < 1)
1014 if (atom.size <= 40)
1016 st = c->fc->streams[c->fc->nb_streams-1];
1018 if ((uint64_t)atom.size > (1<<30))
1019 return AVERROR_INVALIDDATA;
1021 av_free(st->codec->extradata);
1022 st->codec->extradata = av_mallocz(atom.size - 40 + FF_INPUT_BUFFER_PADDING_SIZE);
1023 if (!st->codec->extradata)
1024 return AVERROR(ENOMEM);
1025 st->codec->extradata_size = atom.size - 40;
1027 avio_read(pb, st->codec->extradata, atom.size - 40);
1031 static int mov_read_stco(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1034 MOVStreamContext *sc;
1035 unsigned int i, entries;
1037 if (c->fc->nb_streams < 1)
1039 st = c->fc->streams[c->fc->nb_streams-1];
1042 avio_r8(pb); /* version */
1043 avio_rb24(pb); /* flags */
1045 entries = avio_rb32(pb);
1049 if (entries >= UINT_MAX/sizeof(int64_t))
1050 return AVERROR_INVALIDDATA;
1052 sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
1053 if (!sc->chunk_offsets)
1054 return AVERROR(ENOMEM);
1055 sc->chunk_count = entries;
1057 if (atom.type == MKTAG('s','t','c','o'))
1058 for (i=0; i<entries; i++)
1059 sc->chunk_offsets[i] = avio_rb32(pb);
1060 else if (atom.type == MKTAG('c','o','6','4'))
1061 for (i=0; i<entries; i++)
1062 sc->chunk_offsets[i] = avio_rb64(pb);
1064 return AVERROR_INVALIDDATA;
1070 * Compute codec id for 'lpcm' tag.
1071 * See CoreAudioTypes and AudioStreamBasicDescription at Apple.
1073 enum CodecID ff_mov_get_lpcm_codec_id(int bps, int flags)
1075 if (flags & 1) { // floating point
1076 if (flags & 2) { // big endian
1077 if (bps == 32) return CODEC_ID_PCM_F32BE;
1078 else if (bps == 64) return CODEC_ID_PCM_F64BE;
1080 if (bps == 32) return CODEC_ID_PCM_F32LE;
1081 else if (bps == 64) return CODEC_ID_PCM_F64LE;
1087 if (flags & 4) return CODEC_ID_PCM_S8;
1088 else return CODEC_ID_PCM_U8;
1089 else if (bps == 16) return CODEC_ID_PCM_S16BE;
1090 else if (bps == 24) return CODEC_ID_PCM_S24BE;
1091 else if (bps == 32) return CODEC_ID_PCM_S32BE;
1094 if (flags & 4) return CODEC_ID_PCM_S8;
1095 else return CODEC_ID_PCM_U8;
1096 else if (bps == 16) return CODEC_ID_PCM_S16LE;
1097 else if (bps == 24) return CODEC_ID_PCM_S24LE;
1098 else if (bps == 32) return CODEC_ID_PCM_S32LE;
1101 return CODEC_ID_NONE;
1104 int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries)
1107 MOVStreamContext *sc;
1108 int j, pseudo_stream_id;
1110 if (c->fc->nb_streams < 1)
1112 st = c->fc->streams[c->fc->nb_streams-1];
1115 for (pseudo_stream_id=0; pseudo_stream_id<entries; pseudo_stream_id++) {
1116 //Parsing Sample description table
1119 MOVAtom a = { AV_RL32("stsd") };
1120 int64_t start_pos = avio_tell(pb);
1121 int size = avio_rb32(pb); /* size */
1122 uint32_t format = avio_rl32(pb); /* data format */
1125 avio_rb32(pb); /* reserved */
1126 avio_rb16(pb); /* reserved */
1127 dref_id = avio_rb16(pb);
1130 if (st->codec->codec_tag &&
1131 st->codec->codec_tag != format &&
1132 (c->fc->video_codec_id ? ff_codec_get_id(ff_codec_movvideo_tags, format) != c->fc->video_codec_id
1133 : st->codec->codec_tag != MKTAG('j','p','e','g'))
1135 /* Multiple fourcc, we skip JPEG. This is not correct, we should
1136 * export it as a separate AVStream but this needs a few changes
1137 * in the MOV demuxer, patch welcome. */
1139 av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n");
1140 avio_skip(pb, size - (avio_tell(pb) - start_pos));
1143 /* we cannot demux concatenated h264 streams because of different extradata */
1144 if (st->codec->codec_tag && st->codec->codec_tag == AV_RL32("avc1"))
1146 sc->pseudo_stream_id = st->codec->codec_tag ? -1 : pseudo_stream_id;
1147 sc->dref_id= dref_id;
1149 st->codec->codec_tag = format;
1150 id = ff_codec_get_id(ff_codec_movaudio_tags, format);
1151 if (id<=0 && ((format&0xFFFF) == 'm'+('s'<<8) || (format&0xFFFF) == 'T'+('S'<<8)))
1152 id = ff_codec_get_id(ff_codec_wav_tags, av_bswap32(format)&0xFFFF);
1154 if (st->codec->codec_type != AVMEDIA_TYPE_VIDEO && id > 0) {
1155 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
1156 } else if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO && /* do not overwrite codec type */
1157 format && format != MKTAG('m','p','4','s')) { /* skip old asf mpeg4 tag */
1158 id = ff_codec_get_id(ff_codec_movvideo_tags, format);
1160 id = ff_codec_get_id(ff_codec_bmp_tags, format);
1162 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
1163 else if (st->codec->codec_type == AVMEDIA_TYPE_DATA){
1164 id = ff_codec_get_id(ff_codec_movsubtitle_tags, format);
1166 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
1170 av_dlog(c->fc, "size=%d 4CC= %c%c%c%c codec_type=%d\n", size,
1171 (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff,
1172 (format >> 24) & 0xff, st->codec->codec_type);
1174 if (st->codec->codec_type==AVMEDIA_TYPE_VIDEO) {
1175 unsigned int color_depth, len;
1176 int color_greyscale;
1178 st->codec->codec_id = id;
1179 avio_rb16(pb); /* version */
1180 avio_rb16(pb); /* revision level */
1181 avio_rb32(pb); /* vendor */
1182 avio_rb32(pb); /* temporal quality */
1183 avio_rb32(pb); /* spatial quality */
1185 st->codec->width = avio_rb16(pb); /* width */
1186 st->codec->height = avio_rb16(pb); /* height */
1188 avio_rb32(pb); /* horiz resolution */
1189 avio_rb32(pb); /* vert resolution */
1190 avio_rb32(pb); /* data size, always 0 */
1191 avio_rb16(pb); /* frames per samples */
1193 len = avio_r8(pb); /* codec name, pascal string */
1196 mov_read_mac_string(c, pb, len, st->codec->codec_name, 32);
1198 avio_skip(pb, 31 - len);
1199 /* codec_tag YV12 triggers an UV swap in rawdec.c */
1200 if (!memcmp(st->codec->codec_name, "Planar Y'CbCr 8-bit 4:2:0", 25))
1201 st->codec->codec_tag=MKTAG('I', '4', '2', '0');
1203 st->codec->bits_per_coded_sample = avio_rb16(pb); /* depth */
1204 st->codec->color_table_id = avio_rb16(pb); /* colortable id */
1205 av_dlog(c->fc, "depth %d, ctab id %d\n",
1206 st->codec->bits_per_coded_sample, st->codec->color_table_id);
1207 /* figure out the palette situation */
1208 color_depth = st->codec->bits_per_coded_sample & 0x1F;
1209 color_greyscale = st->codec->bits_per_coded_sample & 0x20;
1211 /* if the depth is 2, 4, or 8 bpp, file is palettized */
1212 if ((color_depth == 2) || (color_depth == 4) ||
1213 (color_depth == 8)) {
1214 /* for palette traversal */
1215 unsigned int color_start, color_count, color_end;
1216 unsigned char r, g, b;
1218 if (color_greyscale) {
1219 int color_index, color_dec;
1220 /* compute the greyscale palette */
1221 st->codec->bits_per_coded_sample = color_depth;
1222 color_count = 1 << color_depth;
1224 color_dec = 256 / (color_count - 1);
1225 for (j = 0; j < color_count; j++) {
1226 r = g = b = color_index;
1228 (r << 16) | (g << 8) | (b);
1229 color_index -= color_dec;
1230 if (color_index < 0)
1233 } else if (st->codec->color_table_id) {
1234 const uint8_t *color_table;
1235 /* if flag bit 3 is set, use the default palette */
1236 color_count = 1 << color_depth;
1237 if (color_depth == 2)
1238 color_table = ff_qt_default_palette_4;
1239 else if (color_depth == 4)
1240 color_table = ff_qt_default_palette_16;
1242 color_table = ff_qt_default_palette_256;
1244 for (j = 0; j < color_count; j++) {
1245 r = color_table[j * 3 + 0];
1246 g = color_table[j * 3 + 1];
1247 b = color_table[j * 3 + 2];
1249 (r << 16) | (g << 8) | (b);
1252 /* load the palette from the file */
1253 color_start = avio_rb32(pb);
1254 color_count = avio_rb16(pb);
1255 color_end = avio_rb16(pb);
1256 if ((color_start <= 255) &&
1257 (color_end <= 255)) {
1258 for (j = color_start; j <= color_end; j++) {
1259 /* each R, G, or B component is 16 bits;
1260 * only use the top 8 bits; skip alpha bytes
1271 (r << 16) | (g << 8) | (b);
1275 sc->has_palette = 1;
1277 } else if (st->codec->codec_type==AVMEDIA_TYPE_AUDIO) {
1278 int bits_per_sample, flags;
1279 uint16_t version = avio_rb16(pb);
1281 st->codec->codec_id = id;
1282 avio_rb16(pb); /* revision level */
1283 avio_rb32(pb); /* vendor */
1285 st->codec->channels = avio_rb16(pb); /* channel count */
1286 av_dlog(c->fc, "audio channels %d\n", st->codec->channels);
1287 st->codec->bits_per_coded_sample = avio_rb16(pb); /* sample size */
1289 sc->audio_cid = avio_rb16(pb);
1290 avio_rb16(pb); /* packet size = 0 */
1292 st->codec->sample_rate = ((avio_rb32(pb) >> 16));
1294 //Read QT version 1 fields. In version 0 these do not exist.
1295 av_dlog(c->fc, "version =%d, isom =%d\n",version,c->isom);
1298 sc->samples_per_frame = avio_rb32(pb);
1299 avio_rb32(pb); /* bytes per packet */
1300 sc->bytes_per_frame = avio_rb32(pb);
1301 avio_rb32(pb); /* bytes per sample */
1302 } else if (version==2) {
1303 avio_rb32(pb); /* sizeof struct only */
1304 st->codec->sample_rate = av_int2double(avio_rb64(pb)); /* float 64 */
1305 st->codec->channels = avio_rb32(pb);
1306 avio_rb32(pb); /* always 0x7F000000 */
1307 st->codec->bits_per_coded_sample = avio_rb32(pb); /* bits per channel if sound is uncompressed */
1308 flags = avio_rb32(pb); /* lpcm format specific flag */
1309 sc->bytes_per_frame = avio_rb32(pb); /* bytes per audio packet if constant */
1310 sc->samples_per_frame = avio_rb32(pb); /* lpcm frames per audio packet if constant */
1311 if (format == MKTAG('l','p','c','m'))
1312 st->codec->codec_id = ff_mov_get_lpcm_codec_id(st->codec->bits_per_coded_sample, flags);
1316 switch (st->codec->codec_id) {
1317 case CODEC_ID_PCM_S8:
1318 case CODEC_ID_PCM_U8:
1319 if (st->codec->bits_per_coded_sample == 16)
1320 st->codec->codec_id = CODEC_ID_PCM_S16BE;
1322 case CODEC_ID_PCM_S16LE:
1323 case CODEC_ID_PCM_S16BE:
1324 if (st->codec->bits_per_coded_sample == 8)
1325 st->codec->codec_id = CODEC_ID_PCM_S8;
1326 else if (st->codec->bits_per_coded_sample == 24)
1327 st->codec->codec_id =
1328 st->codec->codec_id == CODEC_ID_PCM_S16BE ?
1329 CODEC_ID_PCM_S24BE : CODEC_ID_PCM_S24LE;
1331 /* set values for old format before stsd version 1 appeared */
1332 case CODEC_ID_MACE3:
1333 sc->samples_per_frame = 6;
1334 sc->bytes_per_frame = 2*st->codec->channels;
1336 case CODEC_ID_MACE6:
1337 sc->samples_per_frame = 6;
1338 sc->bytes_per_frame = 1*st->codec->channels;
1340 case CODEC_ID_ADPCM_IMA_QT:
1341 sc->samples_per_frame = 64;
1342 sc->bytes_per_frame = 34*st->codec->channels;
1345 sc->samples_per_frame = 160;
1346 sc->bytes_per_frame = 33;
1352 bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
1353 if (bits_per_sample) {
1354 st->codec->bits_per_coded_sample = bits_per_sample;
1355 sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
1357 } else if (st->codec->codec_type==AVMEDIA_TYPE_SUBTITLE){
1358 // ttxt stsd contains display flags, justification, background
1359 // color, fonts, and default styles, so fake an atom to read it
1360 MOVAtom fake_atom = { .size = size - (avio_tell(pb) - start_pos) };
1361 if (format != AV_RL32("mp4s")) // mp4s contains a regular esds atom
1362 mov_read_glbl(c, pb, fake_atom);
1363 st->codec->codec_id= id;
1364 st->codec->width = sc->width;
1365 st->codec->height = sc->height;
1367 /* other codec type, just skip (rtp, mp4s, tmcd ...) */
1368 avio_skip(pb, size - (avio_tell(pb) - start_pos));
1370 /* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */
1371 a.size = size - (avio_tell(pb) - start_pos);
1374 if ((ret = mov_read_default(c, pb, a)) < 0)
1376 } else if (a.size > 0)
1377 avio_skip(pb, a.size);
1380 if (st->codec->codec_type==AVMEDIA_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1)
1381 st->codec->sample_rate= sc->time_scale;
1383 /* special codec parameters handling */
1384 switch (st->codec->codec_id) {
1385 #if CONFIG_DV_DEMUXER
1386 case CODEC_ID_DVAUDIO:
1387 c->dv_fctx = avformat_alloc_context();
1388 c->dv_demux = avpriv_dv_init_demux(c->dv_fctx);
1390 av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
1391 return AVERROR(ENOMEM);
1393 sc->dv_audio_container = 1;
1394 st->codec->codec_id = CODEC_ID_PCM_S16LE;
1397 /* no ifdef since parameters are always those */
1398 case CODEC_ID_QCELP:
1399 // force sample rate for qcelp when not stored in mov
1400 if (st->codec->codec_tag != MKTAG('Q','c','l','p'))
1401 st->codec->sample_rate = 8000;
1402 st->codec->frame_size= 160;
1403 st->codec->channels= 1; /* really needed */
1405 case CODEC_ID_AMR_NB:
1406 st->codec->channels= 1; /* really needed */
1407 /* force sample rate for amr, stsd in 3gp does not store sample rate */
1408 st->codec->sample_rate = 8000;
1409 /* force frame_size, too, samples_per_frame isn't always set properly */
1410 st->codec->frame_size = 160;
1412 case CODEC_ID_AMR_WB:
1413 st->codec->channels = 1;
1414 st->codec->sample_rate = 16000;
1415 st->codec->frame_size = 320;
1419 st->codec->codec_type = AVMEDIA_TYPE_AUDIO; /* force type after stsd for m1a hdlr */
1420 st->need_parsing = AVSTREAM_PARSE_FULL;
1423 case CODEC_ID_ADPCM_MS:
1424 case CODEC_ID_ADPCM_IMA_WAV:
1425 st->codec->frame_size = sc->samples_per_frame;
1426 st->codec->block_align = sc->bytes_per_frame;
1429 if (st->codec->extradata_size == 36) {
1430 st->codec->frame_size = AV_RB32(st->codec->extradata+12);
1431 st->codec->channels = AV_RB8 (st->codec->extradata+21);
1432 st->codec->sample_rate = AV_RB32(st->codec->extradata+32);
1442 static int mov_read_stsd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1446 avio_r8(pb); /* version */
1447 avio_rb24(pb); /* flags */
1448 entries = avio_rb32(pb);
1450 return ff_mov_read_stsd_entries(c, pb, entries);
1453 static int mov_read_stsc(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1456 MOVStreamContext *sc;
1457 unsigned int i, entries;
1459 if (c->fc->nb_streams < 1)
1461 st = c->fc->streams[c->fc->nb_streams-1];
1464 avio_r8(pb); /* version */
1465 avio_rb24(pb); /* flags */
1467 entries = avio_rb32(pb);
1469 av_dlog(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
1473 if (entries >= UINT_MAX / sizeof(*sc->stsc_data))
1474 return AVERROR_INVALIDDATA;
1475 sc->stsc_data = av_malloc(entries * sizeof(*sc->stsc_data));
1477 return AVERROR(ENOMEM);
1478 sc->stsc_count = entries;
1480 for (i=0; i<entries; i++) {
1481 sc->stsc_data[i].first = avio_rb32(pb);
1482 sc->stsc_data[i].count = avio_rb32(pb);
1483 sc->stsc_data[i].id = avio_rb32(pb);
1488 static int mov_read_stps(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1491 MOVStreamContext *sc;
1492 unsigned i, entries;
1494 if (c->fc->nb_streams < 1)
1496 st = c->fc->streams[c->fc->nb_streams-1];
1499 avio_rb32(pb); // version + flags
1501 entries = avio_rb32(pb);
1502 if (entries >= UINT_MAX / sizeof(*sc->stps_data))
1503 return AVERROR_INVALIDDATA;
1504 sc->stps_data = av_malloc(entries * sizeof(*sc->stps_data));
1506 return AVERROR(ENOMEM);
1507 sc->stps_count = entries;
1509 for (i = 0; i < entries; i++) {
1510 sc->stps_data[i] = avio_rb32(pb);
1511 //av_dlog(c->fc, "stps %d\n", sc->stps_data[i]);
1517 static int mov_read_stss(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1520 MOVStreamContext *sc;
1521 unsigned int i, entries;
1523 if (c->fc->nb_streams < 1)
1525 st = c->fc->streams[c->fc->nb_streams-1];
1528 avio_r8(pb); /* version */
1529 avio_rb24(pb); /* flags */
1531 entries = avio_rb32(pb);
1533 av_dlog(c->fc, "keyframe_count = %d\n", entries);
1537 if (entries >= UINT_MAX / sizeof(int))
1538 return AVERROR_INVALIDDATA;
1539 sc->keyframes = av_malloc(entries * sizeof(int));
1541 return AVERROR(ENOMEM);
1542 sc->keyframe_count = entries;
1544 for (i=0; i<entries; i++) {
1545 sc->keyframes[i] = avio_rb32(pb);
1546 //av_dlog(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
1551 static int mov_read_stsz(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1554 MOVStreamContext *sc;
1555 unsigned int i, entries, sample_size, field_size, num_bytes;
1559 if (c->fc->nb_streams < 1)
1561 st = c->fc->streams[c->fc->nb_streams-1];
1564 avio_r8(pb); /* version */
1565 avio_rb24(pb); /* flags */
1567 if (atom.type == MKTAG('s','t','s','z')) {
1568 sample_size = avio_rb32(pb);
1569 if (!sc->sample_size) /* do not overwrite value computed in stsd */
1570 sc->sample_size = sample_size;
1574 avio_rb24(pb); /* reserved */
1575 field_size = avio_r8(pb);
1577 entries = avio_rb32(pb);
1579 av_dlog(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, entries);
1581 sc->sample_count = entries;
1585 if (field_size != 4 && field_size != 8 && field_size != 16 && field_size != 32) {
1586 av_log(c->fc, AV_LOG_ERROR, "Invalid sample field size %d\n", field_size);
1587 return AVERROR_INVALIDDATA;
1592 if (entries >= UINT_MAX / sizeof(int) || entries >= (UINT_MAX - 4) / field_size)
1593 return AVERROR_INVALIDDATA;
1594 sc->sample_sizes = av_malloc(entries * sizeof(int));
1595 if (!sc->sample_sizes)
1596 return AVERROR(ENOMEM);
1598 num_bytes = (entries*field_size+4)>>3;
1600 buf = av_malloc(num_bytes+FF_INPUT_BUFFER_PADDING_SIZE);
1602 av_freep(&sc->sample_sizes);
1603 return AVERROR(ENOMEM);
1606 if (avio_read(pb, buf, num_bytes) < num_bytes) {
1607 av_freep(&sc->sample_sizes);
1609 return AVERROR_INVALIDDATA;
1612 init_get_bits(&gb, buf, 8*num_bytes);
1614 for (i = 0; i < entries; i++) {
1615 sc->sample_sizes[i] = get_bits_long(&gb, field_size);
1616 sc->data_size += sc->sample_sizes[i];
1623 static int mov_read_stts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1626 MOVStreamContext *sc;
1627 unsigned int i, entries;
1629 int64_t total_sample_count=0;
1631 if (c->fc->nb_streams < 1)
1633 st = c->fc->streams[c->fc->nb_streams-1];
1636 avio_r8(pb); /* version */
1637 avio_rb24(pb); /* flags */
1638 entries = avio_rb32(pb);
1640 av_dlog(c->fc, "track[%i].stts.entries = %i\n",
1641 c->fc->nb_streams-1, entries);
1645 if (entries >= UINT_MAX / sizeof(*sc->stts_data))
1646 return AVERROR(EINVAL);
1648 sc->stts_data = av_malloc(entries * sizeof(*sc->stts_data));
1650 return AVERROR(ENOMEM);
1652 sc->stts_count = entries;
1654 for (i=0; i<entries; i++) {
1655 int sample_duration;
1658 sample_count=avio_rb32(pb);
1659 sample_duration = avio_rb32(pb);
1660 sc->stts_data[i].count= sample_count;
1661 sc->stts_data[i].duration= sample_duration;
1663 av_dlog(c->fc, "sample_count=%d, sample_duration=%d\n",
1664 sample_count, sample_duration);
1666 duration+=(int64_t)sample_duration*sample_count;
1667 total_sample_count+=sample_count;
1670 st->nb_frames= total_sample_count;
1672 st->duration= duration;
1673 sc->track_end = duration;
1677 static int mov_read_ctts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1680 MOVStreamContext *sc;
1681 unsigned int i, entries;
1683 if (c->fc->nb_streams < 1)
1685 st = c->fc->streams[c->fc->nb_streams-1];
1688 avio_r8(pb); /* version */
1689 avio_rb24(pb); /* flags */
1690 entries = avio_rb32(pb);
1692 av_dlog(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
1696 if (entries >= UINT_MAX / sizeof(*sc->ctts_data))
1697 return AVERROR_INVALIDDATA;
1698 sc->ctts_data = av_malloc(entries * sizeof(*sc->ctts_data));
1700 return AVERROR(ENOMEM);
1701 sc->ctts_count = entries;
1703 for (i=0; i<entries; i++) {
1704 int count =avio_rb32(pb);
1705 int duration =avio_rb32(pb);
1707 sc->ctts_data[i].count = count;
1708 sc->ctts_data[i].duration= duration;
1710 sc->dts_shift = FFMAX(sc->dts_shift, -duration);
1713 av_dlog(c->fc, "dts shift %d\n", sc->dts_shift);
1718 static void mov_build_index(MOVContext *mov, AVStream *st)
1720 MOVStreamContext *sc = st->priv_data;
1721 int64_t current_offset;
1722 int64_t current_dts = 0;
1723 unsigned int stts_index = 0;
1724 unsigned int stsc_index = 0;
1725 unsigned int stss_index = 0;
1726 unsigned int stps_index = 0;
1728 uint64_t stream_size = 0;
1730 /* adjust first dts according to edit list */
1731 if (sc->time_offset && mov->time_scale > 0) {
1732 if (sc->time_offset < 0)
1733 sc->time_offset = av_rescale(sc->time_offset, sc->time_scale, mov->time_scale);
1734 current_dts = -sc->time_offset;
1735 if (sc->ctts_data && sc->stts_data && sc->stts_data[0].duration &&
1736 sc->ctts_data[0].duration / sc->stts_data[0].duration > 16) {
1737 /* more than 16 frames delay, dts are likely wrong
1738 this happens with files created by iMovie */
1740 st->codec->has_b_frames = 1;
1744 /* only use old uncompressed audio chunk demuxing when stts specifies it */
1745 if (!(st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
1746 sc->stts_count == 1 && sc->stts_data[0].duration == 1)) {
1747 unsigned int current_sample = 0;
1748 unsigned int stts_sample = 0;
1749 unsigned int sample_size;
1750 unsigned int distance = 0;
1751 int key_off = sc->keyframes && sc->keyframes[0] == 1;
1753 current_dts -= sc->dts_shift;
1755 if (!sc->sample_count)
1757 if (sc->sample_count >= UINT_MAX / sizeof(*st->index_entries))
1759 st->index_entries = av_malloc(sc->sample_count*sizeof(*st->index_entries));
1760 if (!st->index_entries)
1762 st->index_entries_allocated_size = sc->sample_count*sizeof(*st->index_entries);
1764 for (i = 0; i < sc->chunk_count; i++) {
1765 current_offset = sc->chunk_offsets[i];
1766 while (stsc_index + 1 < sc->stsc_count &&
1767 i + 1 == sc->stsc_data[stsc_index + 1].first)
1769 for (j = 0; j < sc->stsc_data[stsc_index].count; j++) {
1771 if (current_sample >= sc->sample_count) {
1772 av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
1776 if (!sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index]) {
1778 if (stss_index + 1 < sc->keyframe_count)
1780 } else if (sc->stps_count && current_sample+key_off == sc->stps_data[stps_index]) {
1782 if (stps_index + 1 < sc->stps_count)
1787 sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
1788 if (sc->pseudo_stream_id == -1 ||
1789 sc->stsc_data[stsc_index].id - 1 == sc->pseudo_stream_id) {
1790 AVIndexEntry *e = &st->index_entries[st->nb_index_entries++];
1791 e->pos = current_offset;
1792 e->timestamp = current_dts;
1793 e->size = sample_size;
1794 e->min_distance = distance;
1795 e->flags = keyframe ? AVINDEX_KEYFRAME : 0;
1796 av_dlog(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
1797 "size %d, distance %d, keyframe %d\n", st->index, current_sample,
1798 current_offset, current_dts, sample_size, distance, keyframe);
1801 current_offset += sample_size;
1802 stream_size += sample_size;
1803 current_dts += sc->stts_data[stts_index].duration;
1807 if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
1813 if (st->duration > 0)
1814 st->codec->bit_rate = stream_size*8*sc->time_scale/st->duration;
1816 unsigned chunk_samples, total = 0;
1818 // compute total chunk count
1819 for (i = 0; i < sc->stsc_count; i++) {
1820 unsigned count, chunk_count;
1822 chunk_samples = sc->stsc_data[i].count;
1823 if (sc->samples_per_frame && chunk_samples % sc->samples_per_frame) {
1824 av_log(mov->fc, AV_LOG_ERROR, "error unaligned chunk\n");
1828 if (sc->samples_per_frame >= 160) { // gsm
1829 count = chunk_samples / sc->samples_per_frame;
1830 } else if (sc->samples_per_frame > 1) {
1831 unsigned samples = (1024/sc->samples_per_frame)*sc->samples_per_frame;
1832 count = (chunk_samples+samples-1) / samples;
1834 count = (chunk_samples+1023) / 1024;
1837 if (i < sc->stsc_count - 1)
1838 chunk_count = sc->stsc_data[i+1].first - sc->stsc_data[i].first;
1840 chunk_count = sc->chunk_count - (sc->stsc_data[i].first - 1);
1841 total += chunk_count * count;
1844 av_dlog(mov->fc, "chunk count %d\n", total);
1845 if (total >= UINT_MAX / sizeof(*st->index_entries))
1847 st->index_entries = av_malloc(total*sizeof(*st->index_entries));
1848 if (!st->index_entries)
1850 st->index_entries_allocated_size = total*sizeof(*st->index_entries);
1853 for (i = 0; i < sc->chunk_count; i++) {
1854 current_offset = sc->chunk_offsets[i];
1855 if (stsc_index + 1 < sc->stsc_count &&
1856 i + 1 == sc->stsc_data[stsc_index + 1].first)
1858 chunk_samples = sc->stsc_data[stsc_index].count;
1860 while (chunk_samples > 0) {
1862 unsigned size, samples;
1864 if (sc->samples_per_frame >= 160) { // gsm
1865 samples = sc->samples_per_frame;
1866 size = sc->bytes_per_frame;
1868 if (sc->samples_per_frame > 1) {
1869 samples = FFMIN((1024 / sc->samples_per_frame)*
1870 sc->samples_per_frame, chunk_samples);
1871 size = (samples / sc->samples_per_frame) * sc->bytes_per_frame;
1873 samples = FFMIN(1024, chunk_samples);
1874 size = samples * sc->sample_size;
1878 if (st->nb_index_entries >= total) {
1879 av_log(mov->fc, AV_LOG_ERROR, "wrong chunk count %d\n", total);
1882 e = &st->index_entries[st->nb_index_entries++];
1883 e->pos = current_offset;
1884 e->timestamp = current_dts;
1886 e->min_distance = 0;
1887 e->flags = AVINDEX_KEYFRAME;
1888 av_dlog(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", "
1889 "size %d, duration %d\n", st->index, i, current_offset, current_dts,
1892 current_offset += size;
1893 current_dts += samples;
1894 chunk_samples -= samples;
1900 static int mov_open_dref(AVIOContext **pb, char *src, MOVDref *ref,
1901 AVIOInterruptCB *int_cb)
1903 /* try relative path, we do not try the absolute because it can leak information about our
1904 system to an attacker */
1905 if (ref->nlvl_to > 0 && ref->nlvl_from > 0) {
1906 char filename[1024];
1910 /* find a source dir */
1911 src_path = strrchr(src, '/');
1917 /* find a next level down to target */
1918 for (i = 0, l = strlen(ref->path) - 1; l >= 0; l--)
1919 if (ref->path[l] == '/') {
1920 if (i == ref->nlvl_to - 1)
1926 /* compose filename if next level down to target was found */
1927 if (i == ref->nlvl_to - 1 && src_path - src < sizeof(filename)) {
1928 memcpy(filename, src, src_path - src);
1929 filename[src_path - src] = 0;
1931 for (i = 1; i < ref->nlvl_from; i++)
1932 av_strlcat(filename, "../", 1024);
1934 av_strlcat(filename, ref->path + l + 1, 1024);
1936 if (!avio_open2(pb, filename, AVIO_FLAG_READ, int_cb, NULL))
1941 return AVERROR(ENOENT);
1944 static int mov_read_trak(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1947 MOVStreamContext *sc;
1950 st = avformat_new_stream(c->fc, NULL);
1951 if (!st) return AVERROR(ENOMEM);
1952 st->id = c->fc->nb_streams;
1953 sc = av_mallocz(sizeof(MOVStreamContext));
1954 if (!sc) return AVERROR(ENOMEM);
1957 st->codec->codec_type = AVMEDIA_TYPE_DATA;
1958 sc->ffindex = st->index;
1960 if ((ret = mov_read_default(c, pb, atom)) < 0)
1964 if (sc->chunk_count && (!sc->stts_count || !sc->stsc_count ||
1965 (!sc->sample_size && !sc->sample_count))) {
1966 av_log(c->fc, AV_LOG_ERROR, "stream %d, missing mandatory atoms, broken header\n",
1971 if (sc->time_scale <= 0) {
1972 av_log(c->fc, AV_LOG_WARNING, "stream %d, timescale not set\n", st->index);
1973 sc->time_scale = c->time_scale;
1974 if (sc->time_scale <= 0)
1978 avpriv_set_pts_info(st, 64, 1, sc->time_scale);
1980 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
1981 !st->codec->frame_size && sc->stts_count == 1) {
1982 st->codec->frame_size = av_rescale(sc->stts_data[0].duration,
1983 st->codec->sample_rate, sc->time_scale);
1984 av_dlog(c->fc, "frame size %d\n", st->codec->frame_size);
1987 mov_build_index(c, st);
1989 if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) {
1990 MOVDref *dref = &sc->drefs[sc->dref_id - 1];
1991 if (mov_open_dref(&sc->pb, c->fc->filename, dref, &c->fc->interrupt_callback) < 0)
1992 av_log(c->fc, AV_LOG_ERROR,
1993 "stream %d, error opening alias: path='%s', dir='%s', "
1994 "filename='%s', volume='%s', nlvl_from=%d, nlvl_to=%d\n",
1995 st->index, dref->path, dref->dir, dref->filename,
1996 dref->volume, dref->nlvl_from, dref->nlvl_to);
2000 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2001 if (!st->sample_aspect_ratio.num &&
2002 (st->codec->width != sc->width || st->codec->height != sc->height)) {
2003 st->sample_aspect_ratio = av_d2q(((double)st->codec->height * sc->width) /
2004 ((double)st->codec->width * sc->height), INT_MAX);
2007 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
2008 sc->time_scale*st->nb_frames, st->duration, INT_MAX);
2010 if (sc->stts_count == 1 || (sc->stts_count == 2 && sc->stts_data[1].count == 1))
2011 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den,
2012 sc->time_scale, sc->stts_data[0].duration, INT_MAX);
2015 switch (st->codec->codec_id) {
2016 #if CONFIG_H261_DECODER
2019 #if CONFIG_H263_DECODER
2022 #if CONFIG_H264_DECODER
2025 #if CONFIG_MPEG4_DECODER
2026 case CODEC_ID_MPEG4:
2028 st->codec->width = 0; /* let decoder init width/height */
2029 st->codec->height= 0;
2033 /* Do not need those anymore. */
2034 av_freep(&sc->chunk_offsets);
2035 av_freep(&sc->stsc_data);
2036 av_freep(&sc->sample_sizes);
2037 av_freep(&sc->keyframes);
2038 av_freep(&sc->stts_data);
2039 av_freep(&sc->stps_data);
2044 static int mov_read_ilst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2047 c->itunes_metadata = 1;
2048 ret = mov_read_default(c, pb, atom);
2049 c->itunes_metadata = 0;
2053 static int mov_read_meta(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2055 while (atom.size > 8) {
2056 uint32_t tag = avio_rl32(pb);
2058 if (tag == MKTAG('h','d','l','r')) {
2059 avio_seek(pb, -8, SEEK_CUR);
2061 return mov_read_default(c, pb, atom);
2067 static int mov_read_tkhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2072 int64_t disp_transform[2];
2073 int display_matrix[3][2];
2075 MOVStreamContext *sc;
2078 if (c->fc->nb_streams < 1)
2080 st = c->fc->streams[c->fc->nb_streams-1];
2083 version = avio_r8(pb);
2084 avio_rb24(pb); /* flags */
2086 MOV_TRACK_ENABLED 0x0001
2087 MOV_TRACK_IN_MOVIE 0x0002
2088 MOV_TRACK_IN_PREVIEW 0x0004
2089 MOV_TRACK_IN_POSTER 0x0008
2096 avio_rb32(pb); /* creation time */
2097 avio_rb32(pb); /* modification time */
2099 st->id = (int)avio_rb32(pb); /* track id (NOT 0 !)*/
2100 avio_rb32(pb); /* reserved */
2102 /* highlevel (considering edits) duration in movie timebase */
2103 (version == 1) ? avio_rb64(pb) : avio_rb32(pb);
2104 avio_rb32(pb); /* reserved */
2105 avio_rb32(pb); /* reserved */
2107 avio_rb16(pb); /* layer */
2108 avio_rb16(pb); /* alternate group */
2109 avio_rb16(pb); /* volume */
2110 avio_rb16(pb); /* reserved */
2112 //read in the display matrix (outlined in ISO 14496-12, Section 6.2.2)
2113 // they're kept in fixed point format through all calculations
2114 // ignore u,v,z b/c we don't need the scale factor to calc aspect ratio
2115 for (i = 0; i < 3; i++) {
2116 display_matrix[i][0] = avio_rb32(pb); // 16.16 fixed point
2117 display_matrix[i][1] = avio_rb32(pb); // 16.16 fixed point
2118 avio_rb32(pb); // 2.30 fixed point (not used)
2121 width = avio_rb32(pb); // 16.16 fixed point track width
2122 height = avio_rb32(pb); // 16.16 fixed point track height
2123 sc->width = width >> 16;
2124 sc->height = height >> 16;
2126 // transform the display width/height according to the matrix
2127 // skip this if the display matrix is the default identity matrix
2128 // or if it is rotating the picture, ex iPhone 3GS
2129 // to keep the same scale, use [width height 1<<16]
2130 if (width && height &&
2131 ((display_matrix[0][0] != 65536 ||
2132 display_matrix[1][1] != 65536) &&
2133 !display_matrix[0][1] &&
2134 !display_matrix[1][0] &&
2135 !display_matrix[2][0] && !display_matrix[2][1])) {
2136 for (i = 0; i < 2; i++)
2138 (int64_t) width * display_matrix[0][i] +
2139 (int64_t) height * display_matrix[1][i] +
2140 ((int64_t) display_matrix[2][i] << 16);
2142 //sample aspect ratio is new width/height divided by old width/height
2143 st->sample_aspect_ratio = av_d2q(
2144 ((double) disp_transform[0] * height) /
2145 ((double) disp_transform[1] * width), INT_MAX);
2150 static int mov_read_tfhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2152 MOVFragment *frag = &c->fragment;
2153 MOVTrackExt *trex = NULL;
2154 int flags, track_id, i;
2156 avio_r8(pb); /* version */
2157 flags = avio_rb24(pb);
2159 track_id = avio_rb32(pb);
2161 return AVERROR_INVALIDDATA;
2162 frag->track_id = track_id;
2163 for (i = 0; i < c->trex_count; i++)
2164 if (c->trex_data[i].track_id == frag->track_id) {
2165 trex = &c->trex_data[i];
2169 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding trex\n");
2170 return AVERROR_INVALIDDATA;
2173 frag->base_data_offset = flags & MOV_TFHD_BASE_DATA_OFFSET ?
2174 avio_rb64(pb) : frag->moof_offset;
2175 frag->stsd_id = flags & MOV_TFHD_STSD_ID ? avio_rb32(pb) : trex->stsd_id;
2177 frag->duration = flags & MOV_TFHD_DEFAULT_DURATION ?
2178 avio_rb32(pb) : trex->duration;
2179 frag->size = flags & MOV_TFHD_DEFAULT_SIZE ?
2180 avio_rb32(pb) : trex->size;
2181 frag->flags = flags & MOV_TFHD_DEFAULT_FLAGS ?
2182 avio_rb32(pb) : trex->flags;
2183 av_dlog(c->fc, "frag flags 0x%x\n", frag->flags);
2187 static int mov_read_chap(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2189 c->chapter_track = avio_rb32(pb);
2193 static int mov_read_trex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2197 if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data))
2198 return AVERROR_INVALIDDATA;
2199 trex = av_realloc(c->trex_data, (c->trex_count+1)*sizeof(*c->trex_data));
2201 return AVERROR(ENOMEM);
2202 c->trex_data = trex;
2203 trex = &c->trex_data[c->trex_count++];
2204 avio_r8(pb); /* version */
2205 avio_rb24(pb); /* flags */
2206 trex->track_id = avio_rb32(pb);
2207 trex->stsd_id = avio_rb32(pb);
2208 trex->duration = avio_rb32(pb);
2209 trex->size = avio_rb32(pb);
2210 trex->flags = avio_rb32(pb);
2214 static int mov_read_trun(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2216 MOVFragment *frag = &c->fragment;
2217 AVStream *st = NULL;
2218 MOVStreamContext *sc;
2222 int data_offset = 0;
2223 unsigned entries, first_sample_flags = frag->flags;
2224 int flags, distance, i, found_keyframe = 0;
2226 for (i = 0; i < c->fc->nb_streams; i++) {
2227 if (c->fc->streams[i]->id == frag->track_id) {
2228 st = c->fc->streams[i];
2233 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id);
2234 return AVERROR_INVALIDDATA;
2237 if (sc->pseudo_stream_id+1 != frag->stsd_id)
2239 avio_r8(pb); /* version */
2240 flags = avio_rb24(pb);
2241 entries = avio_rb32(pb);
2242 av_dlog(c->fc, "flags 0x%x entries %d\n", flags, entries);
2244 /* Always assume the presence of composition time offsets.
2245 * Without this assumption, for instance, we cannot deal with a track in fragmented movies that meet the following.
2246 * 1) in the initial movie, there are no samples.
2247 * 2) in the first movie fragment, there is only one sample without composition time offset.
2248 * 3) in the subsequent movie fragments, there are samples with composition time offset. */
2249 if (!sc->ctts_count && sc->sample_count)
2251 /* Complement ctts table if moov atom doesn't have ctts atom. */
2252 ctts_data = av_malloc(sizeof(*sc->ctts_data));
2254 return AVERROR(ENOMEM);
2255 sc->ctts_data = ctts_data;
2256 sc->ctts_data[sc->ctts_count].count = sc->sample_count;
2257 sc->ctts_data[sc->ctts_count].duration = 0;
2260 if ((uint64_t)entries+sc->ctts_count >= UINT_MAX/sizeof(*sc->ctts_data))
2261 return AVERROR_INVALIDDATA;
2262 ctts_data = av_realloc(sc->ctts_data,
2263 (entries+sc->ctts_count)*sizeof(*sc->ctts_data));
2265 return AVERROR(ENOMEM);
2266 sc->ctts_data = ctts_data;
2268 if (flags & MOV_TRUN_DATA_OFFSET) data_offset = avio_rb32(pb);
2269 if (flags & MOV_TRUN_FIRST_SAMPLE_FLAGS) first_sample_flags = avio_rb32(pb);
2270 dts = sc->track_end - sc->time_offset;
2271 offset = frag->base_data_offset + data_offset;
2273 av_dlog(c->fc, "first sample flags 0x%x\n", first_sample_flags);
2274 for (i = 0; i < entries; i++) {
2275 unsigned sample_size = frag->size;
2276 int sample_flags = i ? frag->flags : first_sample_flags;
2277 unsigned sample_duration = frag->duration;
2280 if (flags & MOV_TRUN_SAMPLE_DURATION) sample_duration = avio_rb32(pb);
2281 if (flags & MOV_TRUN_SAMPLE_SIZE) sample_size = avio_rb32(pb);
2282 if (flags & MOV_TRUN_SAMPLE_FLAGS) sample_flags = avio_rb32(pb);
2283 sc->ctts_data[sc->ctts_count].count = 1;
2284 sc->ctts_data[sc->ctts_count].duration = (flags & MOV_TRUN_SAMPLE_CTS) ?
2287 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
2289 else if (!found_keyframe)
2290 keyframe = found_keyframe =
2291 !(sample_flags & (MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC |
2292 MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES));
2295 av_add_index_entry(st, offset, dts, sample_size, distance,
2296 keyframe ? AVINDEX_KEYFRAME : 0);
2297 av_dlog(c->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
2298 "size %d, distance %d, keyframe %d\n", st->index, sc->sample_count+i,
2299 offset, dts, sample_size, distance, keyframe);
2301 dts += sample_duration;
2302 offset += sample_size;
2303 sc->data_size += sample_size;
2305 frag->moof_offset = offset;
2306 st->duration = sc->track_end = dts + sc->time_offset;
2310 /* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
2311 /* like the files created with Adobe Premiere 5.0, for samples see */
2312 /* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
2313 static int mov_read_wide(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2318 return 0; /* continue */
2319 if (avio_rb32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
2320 avio_skip(pb, atom.size - 4);
2323 atom.type = avio_rl32(pb);
2325 if (atom.type != MKTAG('m','d','a','t')) {
2326 avio_skip(pb, atom.size);
2329 err = mov_read_mdat(c, pb, atom);
2333 static int mov_read_cmov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2338 uint8_t *moov_data; /* uncompressed data */
2339 long cmov_len, moov_len;
2342 avio_rb32(pb); /* dcom atom */
2343 if (avio_rl32(pb) != MKTAG('d','c','o','m'))
2344 return AVERROR_INVALIDDATA;
2345 if (avio_rl32(pb) != MKTAG('z','l','i','b')) {
2346 av_log(c->fc, AV_LOG_ERROR, "unknown compression for cmov atom !");
2347 return AVERROR_INVALIDDATA;
2349 avio_rb32(pb); /* cmvd atom */
2350 if (avio_rl32(pb) != MKTAG('c','m','v','d'))
2351 return AVERROR_INVALIDDATA;
2352 moov_len = avio_rb32(pb); /* uncompressed size */
2353 cmov_len = atom.size - 6 * 4;
2355 cmov_data = av_malloc(cmov_len);
2357 return AVERROR(ENOMEM);
2358 moov_data = av_malloc(moov_len);
2361 return AVERROR(ENOMEM);
2363 avio_read(pb, cmov_data, cmov_len);
2364 if (uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
2365 goto free_and_return;
2366 if (ffio_init_context(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
2367 goto free_and_return;
2368 atom.type = MKTAG('m','o','o','v');
2369 atom.size = moov_len;
2370 ret = mov_read_default(c, &ctx, atom);
2376 av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
2377 return AVERROR(ENOSYS);
2381 /* edit list atom */
2382 static int mov_read_elst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2384 MOVStreamContext *sc;
2385 int i, edit_count, version;
2387 if (c->fc->nb_streams < 1)
2389 sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
2391 version = avio_r8(pb); /* version */
2392 avio_rb24(pb); /* flags */
2393 edit_count = avio_rb32(pb); /* entries */
2395 if ((uint64_t)edit_count*12+8 > atom.size)
2396 return AVERROR_INVALIDDATA;
2398 for (i=0; i<edit_count; i++){
2402 duration = avio_rb64(pb);
2403 time = avio_rb64(pb);
2405 duration = avio_rb32(pb); /* segment duration */
2406 time = (int32_t)avio_rb32(pb); /* media time */
2408 avio_rb32(pb); /* Media rate */
2409 if (i == 0 && time >= -1) {
2410 sc->time_offset = time != -1 ? time : -duration;
2415 av_log(c->fc, AV_LOG_WARNING, "multiple edit list entries, "
2416 "a/v desync might occur, patch welcome\n");
2418 av_dlog(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, edit_count);
2422 static const MOVParseTableEntry mov_default_parse_table[] = {
2423 { MKTAG('a','v','s','s'), mov_read_extradata },
2424 { MKTAG('c','h','p','l'), mov_read_chpl },
2425 { MKTAG('c','o','6','4'), mov_read_stco },
2426 { MKTAG('c','t','t','s'), mov_read_ctts }, /* composition time to sample */
2427 { MKTAG('d','i','n','f'), mov_read_default },
2428 { MKTAG('d','r','e','f'), mov_read_dref },
2429 { MKTAG('e','d','t','s'), mov_read_default },
2430 { MKTAG('e','l','s','t'), mov_read_elst },
2431 { MKTAG('e','n','d','a'), mov_read_enda },
2432 { MKTAG('f','i','e','l'), mov_read_fiel },
2433 { MKTAG('f','t','y','p'), mov_read_ftyp },
2434 { MKTAG('g','l','b','l'), mov_read_glbl },
2435 { MKTAG('h','d','l','r'), mov_read_hdlr },
2436 { MKTAG('i','l','s','t'), mov_read_ilst },
2437 { MKTAG('j','p','2','h'), mov_read_extradata },
2438 { MKTAG('m','d','a','t'), mov_read_mdat },
2439 { MKTAG('m','d','h','d'), mov_read_mdhd },
2440 { MKTAG('m','d','i','a'), mov_read_default },
2441 { MKTAG('m','e','t','a'), mov_read_meta },
2442 { MKTAG('m','i','n','f'), mov_read_default },
2443 { MKTAG('m','o','o','f'), mov_read_moof },
2444 { MKTAG('m','o','o','v'), mov_read_moov },
2445 { MKTAG('m','v','e','x'), mov_read_default },
2446 { MKTAG('m','v','h','d'), mov_read_mvhd },
2447 { MKTAG('S','M','I',' '), mov_read_smi }, /* Sorenson extension ??? */
2448 { MKTAG('a','l','a','c'), mov_read_extradata }, /* alac specific atom */
2449 { MKTAG('a','v','c','C'), mov_read_glbl },
2450 { MKTAG('p','a','s','p'), mov_read_pasp },
2451 { MKTAG('s','t','b','l'), mov_read_default },
2452 { MKTAG('s','t','c','o'), mov_read_stco },
2453 { MKTAG('s','t','p','s'), mov_read_stps },
2454 { MKTAG('s','t','r','f'), mov_read_strf },
2455 { MKTAG('s','t','s','c'), mov_read_stsc },
2456 { MKTAG('s','t','s','d'), mov_read_stsd }, /* sample description */
2457 { MKTAG('s','t','s','s'), mov_read_stss }, /* sync sample */
2458 { MKTAG('s','t','s','z'), mov_read_stsz }, /* sample size */
2459 { MKTAG('s','t','t','s'), mov_read_stts },
2460 { MKTAG('s','t','z','2'), mov_read_stsz }, /* compact sample size */
2461 { MKTAG('t','k','h','d'), mov_read_tkhd }, /* track header */
2462 { MKTAG('t','f','h','d'), mov_read_tfhd }, /* track fragment header */
2463 { MKTAG('t','r','a','k'), mov_read_trak },
2464 { MKTAG('t','r','a','f'), mov_read_default },
2465 { MKTAG('t','r','e','f'), mov_read_default },
2466 { MKTAG('c','h','a','p'), mov_read_chap },
2467 { MKTAG('t','r','e','x'), mov_read_trex },
2468 { MKTAG('t','r','u','n'), mov_read_trun },
2469 { MKTAG('u','d','t','a'), mov_read_default },
2470 { MKTAG('w','a','v','e'), mov_read_wave },
2471 { MKTAG('e','s','d','s'), mov_read_esds },
2472 { MKTAG('d','a','c','3'), mov_read_dac3 }, /* AC-3 info */
2473 { MKTAG('w','i','d','e'), mov_read_wide }, /* place holder */
2474 { MKTAG('w','f','e','x'), mov_read_wfex },
2475 { MKTAG('c','m','o','v'), mov_read_cmov },
2476 { MKTAG('c','h','a','n'), mov_read_chan }, /* channel layout */
2477 { MKTAG('d','v','c','1'), mov_read_dvc1 },
2481 static int mov_probe(AVProbeData *p)
2483 unsigned int offset;
2487 /* check file header */
2490 /* ignore invalid offset */
2491 if ((offset + 8) > (unsigned int)p->buf_size)
2493 tag = AV_RL32(p->buf + offset + 4);
2495 /* check for obvious tags */
2496 case MKTAG('j','P',' ',' '): /* jpeg 2000 signature */
2497 case MKTAG('m','o','o','v'):
2498 case MKTAG('m','d','a','t'):
2499 case MKTAG('p','n','o','t'): /* detect movs with preview pics like ew.mov and april.mov */
2500 case MKTAG('u','d','t','a'): /* Packet Video PVAuthor adds this and a lot of more junk */
2501 case MKTAG('f','t','y','p'):
2502 return AVPROBE_SCORE_MAX;
2503 /* those are more common words, so rate then a bit less */
2504 case MKTAG('e','d','i','w'): /* xdcam files have reverted first tags */
2505 case MKTAG('w','i','d','e'):
2506 case MKTAG('f','r','e','e'):
2507 case MKTAG('j','u','n','k'):
2508 case MKTAG('p','i','c','t'):
2509 return AVPROBE_SCORE_MAX - 5;
2510 case MKTAG(0x82,0x82,0x7f,0x7d):
2511 case MKTAG('s','k','i','p'):
2512 case MKTAG('u','u','i','d'):
2513 case MKTAG('p','r','f','l'):
2514 offset = AV_RB32(p->buf+offset) + offset;
2515 /* if we only find those cause probedata is too small at least rate them */
2516 score = AVPROBE_SCORE_MAX - 50;
2519 /* unrecognized tag */
2525 // must be done after parsing all trak because there's no order requirement
2526 static void mov_read_chapters(AVFormatContext *s)
2528 MOVContext *mov = s->priv_data;
2529 AVStream *st = NULL;
2530 MOVStreamContext *sc;
2534 for (i = 0; i < s->nb_streams; i++)
2535 if (s->streams[i]->id == mov->chapter_track) {
2540 av_log(s, AV_LOG_ERROR, "Referenced QT chapter track not found\n");
2544 st->discard = AVDISCARD_ALL;
2546 cur_pos = avio_tell(sc->pb);
2548 for (i = 0; i < st->nb_index_entries; i++) {
2549 AVIndexEntry *sample = &st->index_entries[i];
2550 int64_t end = i+1 < st->nb_index_entries ? st->index_entries[i+1].timestamp : st->duration;
2555 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
2556 av_log(s, AV_LOG_ERROR, "Chapter %d not found in file\n", i);
2560 // the first two bytes are the length of the title
2561 len = avio_rb16(sc->pb);
2562 if (len > sample->size-2)
2564 title_len = 2*len + 1;
2565 if (!(title = av_mallocz(title_len)))
2568 // The samples could theoretically be in any encoding if there's an encd
2569 // atom following, but in practice are only utf-8 or utf-16, distinguished
2570 // instead by the presence of a BOM
2574 ch = avio_rb16(sc->pb);
2576 avio_get_str16be(sc->pb, len, title, title_len);
2577 else if (ch == 0xfffe)
2578 avio_get_str16le(sc->pb, len, title, title_len);
2581 if (len == 1 || len == 2)
2584 avio_get_str(sc->pb, len - 2, title + 2, title_len - 2);
2588 avpriv_new_chapter(s, i, st->time_base, sample->timestamp, end, title);
2592 avio_seek(sc->pb, cur_pos, SEEK_SET);
2595 static int mov_read_header(AVFormatContext *s)
2597 MOVContext *mov = s->priv_data;
2598 AVIOContext *pb = s->pb;
2600 MOVAtom atom = { AV_RL32("root") };
2603 /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
2605 atom.size = avio_size(pb);
2607 atom.size = INT64_MAX;
2609 /* check MOV header */
2610 if ((err = mov_read_default(mov, pb, atom)) < 0) {
2611 av_log(s, AV_LOG_ERROR, "error reading header: %d\n", err);
2614 if (!mov->found_moov) {
2615 av_log(s, AV_LOG_ERROR, "moov atom not found\n");
2616 return AVERROR_INVALIDDATA;
2618 av_dlog(mov->fc, "on_parse_exit_offset=%"PRId64"\n", avio_tell(pb));
2620 if (pb->seekable && mov->chapter_track > 0)
2621 mov_read_chapters(s);
2623 if (mov->trex_data) {
2625 for (i = 0; i < s->nb_streams; i++) {
2626 AVStream *st = s->streams[i];
2627 MOVStreamContext *sc = st->priv_data;
2629 st->codec->bit_rate = sc->data_size * 8 * sc->time_scale / st->duration;
2636 static AVIndexEntry *mov_find_next_sample(AVFormatContext *s, AVStream **st)
2638 AVIndexEntry *sample = NULL;
2639 int64_t best_dts = INT64_MAX;
2641 for (i = 0; i < s->nb_streams; i++) {
2642 AVStream *avst = s->streams[i];
2643 MOVStreamContext *msc = avst->priv_data;
2644 if (msc->pb && msc->current_sample < avst->nb_index_entries) {
2645 AVIndexEntry *current_sample = &avst->index_entries[msc->current_sample];
2646 int64_t dts = av_rescale(current_sample->timestamp, AV_TIME_BASE, msc->time_scale);
2647 av_dlog(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
2648 if (!sample || (!s->pb->seekable && current_sample->pos < sample->pos) ||
2650 ((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb &&
2651 ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
2652 (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) {
2653 sample = current_sample;
2662 static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
2664 MOVContext *mov = s->priv_data;
2665 MOVStreamContext *sc;
2666 AVIndexEntry *sample;
2667 AVStream *st = NULL;
2670 sample = mov_find_next_sample(s, &st);
2672 mov->found_mdat = 0;
2673 if (!mov->next_root_atom)
2675 avio_seek(s->pb, mov->next_root_atom, SEEK_SET);
2676 mov->next_root_atom = 0;
2677 if (mov_read_default(mov, s->pb, (MOVAtom){ AV_RL32("root"), INT64_MAX }) < 0 ||
2680 av_dlog(s, "read fragments, offset 0x%"PRIx64"\n", avio_tell(s->pb));
2684 /* must be done just before reading, to avoid infinite loop on sample */
2685 sc->current_sample++;
2687 if (st->discard != AVDISCARD_ALL) {
2688 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
2689 av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
2690 sc->ffindex, sample->pos);
2691 return AVERROR_INVALIDDATA;
2693 ret = av_get_packet(sc->pb, pkt, sample->size);
2696 if (sc->has_palette) {
2699 pal = av_packet_new_side_data(pkt, AV_PKT_DATA_PALETTE, AVPALETTE_SIZE);
2701 av_log(mov->fc, AV_LOG_ERROR, "Cannot append palette to packet\n");
2703 memcpy(pal, sc->palette, AVPALETTE_SIZE);
2704 sc->has_palette = 0;
2707 #if CONFIG_DV_DEMUXER
2708 if (mov->dv_demux && sc->dv_audio_container) {
2709 avpriv_dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size);
2712 ret = avpriv_dv_get_packet(mov->dv_demux, pkt);
2719 pkt->stream_index = sc->ffindex;
2720 pkt->dts = sample->timestamp;
2721 if (sc->ctts_data) {
2722 pkt->pts = pkt->dts + sc->dts_shift + sc->ctts_data[sc->ctts_index].duration;
2723 /* update ctts context */
2725 if (sc->ctts_index < sc->ctts_count &&
2726 sc->ctts_data[sc->ctts_index].count == sc->ctts_sample) {
2728 sc->ctts_sample = 0;
2731 pkt->dts = AV_NOPTS_VALUE;
2733 int64_t next_dts = (sc->current_sample < st->nb_index_entries) ?
2734 st->index_entries[sc->current_sample].timestamp : st->duration;
2735 pkt->duration = next_dts - pkt->dts;
2736 pkt->pts = pkt->dts;
2738 if (st->discard == AVDISCARD_ALL)
2740 pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? AV_PKT_FLAG_KEY : 0;
2741 pkt->pos = sample->pos;
2742 av_dlog(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n",
2743 pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
2747 static int mov_seek_stream(AVFormatContext *s, AVStream *st, int64_t timestamp, int flags)
2749 MOVStreamContext *sc = st->priv_data;
2750 int sample, time_sample;
2753 sample = av_index_search_timestamp(st, timestamp, flags);
2754 av_dlog(s, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
2755 if (sample < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
2757 if (sample < 0) /* not sure what to do */
2758 return AVERROR_INVALIDDATA;
2759 sc->current_sample = sample;
2760 av_dlog(s, "stream %d, found sample %d\n", st->index, sc->current_sample);
2761 /* adjust ctts index */
2762 if (sc->ctts_data) {
2764 for (i = 0; i < sc->ctts_count; i++) {
2765 int next = time_sample + sc->ctts_data[i].count;
2766 if (next > sc->current_sample) {
2768 sc->ctts_sample = sc->current_sample - time_sample;
2777 static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
2780 int64_t seek_timestamp, timestamp;
2784 if (stream_index >= s->nb_streams)
2785 return AVERROR_INVALIDDATA;
2786 if (sample_time < 0)
2789 st = s->streams[stream_index];
2790 sample = mov_seek_stream(s, st, sample_time, flags);
2794 /* adjust seek timestamp to found sample timestamp */
2795 seek_timestamp = st->index_entries[sample].timestamp;
2797 for (i = 0; i < s->nb_streams; i++) {
2799 if (stream_index == i)
2802 timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
2803 mov_seek_stream(s, st, timestamp, flags);
2808 static int mov_read_close(AVFormatContext *s)
2810 MOVContext *mov = s->priv_data;
2813 for (i = 0; i < s->nb_streams; i++) {
2814 AVStream *st = s->streams[i];
2815 MOVStreamContext *sc = st->priv_data;
2817 av_freep(&sc->ctts_data);
2818 for (j = 0; j < sc->drefs_count; j++) {
2819 av_freep(&sc->drefs[j].path);
2820 av_freep(&sc->drefs[j].dir);
2822 av_freep(&sc->drefs);
2823 if (sc->pb && sc->pb != s->pb)
2827 if (mov->dv_demux) {
2828 for (i = 0; i < mov->dv_fctx->nb_streams; i++) {
2829 av_freep(&mov->dv_fctx->streams[i]->codec);
2830 av_freep(&mov->dv_fctx->streams[i]);
2832 av_freep(&mov->dv_fctx);
2833 av_freep(&mov->dv_demux);
2836 av_freep(&mov->trex_data);
2841 AVInputFormat ff_mov_demuxer = {
2842 .name = "mov,mp4,m4a,3gp,3g2,mj2",
2843 .long_name = NULL_IF_CONFIG_SMALL("QuickTime/MPEG-4/Motion JPEG 2000 format"),
2844 .priv_data_size = sizeof(MOVContext),
2845 .read_probe = mov_probe,
2846 .read_header = mov_read_header,
2847 .read_packet = mov_read_packet,
2848 .read_close = mov_read_close,
2849 .read_seek = mov_read_seek,