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/attributes.h"
29 #include "libavutil/audioconvert.h"
30 #include "libavutil/intreadwrite.h"
31 #include "libavutil/intfloat.h"
32 #include "libavutil/mathematics.h"
33 #include "libavutil/avstring.h"
34 #include "libavutil/dict.h"
35 #include "libavcodec/ac3tab.h"
38 #include "avio_internal.h"
41 #include "libavcodec/get_bits.h"
50 * First version by Francois Revol revol@free.fr
51 * Seek function by Gael Chardon gael.dev@4now.net
54 #include "qtpalette.h"
60 /* those functions parse an atom */
61 /* links atom IDs to parse functions */
62 typedef struct MOVParseTableEntry {
64 int (*parse)(MOVContext *ctx, AVIOContext *pb, MOVAtom atom);
67 static const MOVParseTableEntry mov_default_parse_table[];
69 static int mov_metadata_track_or_disc_number(MOVContext *c, AVIOContext *pb,
70 unsigned len, const char *key)
75 avio_rb16(pb); // unknown
76 current = avio_rb16(pb);
77 total = avio_rb16(pb);
79 snprintf(buf, sizeof(buf), "%d", current);
81 snprintf(buf, sizeof(buf), "%d/%d", current, total);
82 av_dict_set(&c->fc->metadata, key, buf, 0);
87 static int mov_metadata_int8_bypass_padding(MOVContext *c, AVIOContext *pb,
88 unsigned len, const char *key)
92 /* bypass padding bytes */
97 snprintf(buf, sizeof(buf), "%d", avio_r8(pb));
98 av_dict_set(&c->fc->metadata, key, buf, 0);
103 static int mov_metadata_int8_no_padding(MOVContext *c, AVIOContext *pb,
104 unsigned len, const char *key)
108 snprintf(buf, sizeof(buf), "%d", avio_r8(pb));
109 av_dict_set(&c->fc->metadata, key, buf, 0);
114 static int mov_metadata_gnre(MOVContext *c, AVIOContext *pb,
115 unsigned len, const char *key)
120 avio_r8(pb); // unknown
123 if (genre < 1 || genre > ID3v1_GENRE_MAX)
125 snprintf(buf, sizeof(buf), "%s", ff_id3v1_genre_str[genre-1]);
126 av_dict_set(&c->fc->metadata, key, buf, 0);
131 static const uint32_t mac_to_unicode[128] = {
132 0x00C4,0x00C5,0x00C7,0x00C9,0x00D1,0x00D6,0x00DC,0x00E1,
133 0x00E0,0x00E2,0x00E4,0x00E3,0x00E5,0x00E7,0x00E9,0x00E8,
134 0x00EA,0x00EB,0x00ED,0x00EC,0x00EE,0x00EF,0x00F1,0x00F3,
135 0x00F2,0x00F4,0x00F6,0x00F5,0x00FA,0x00F9,0x00FB,0x00FC,
136 0x2020,0x00B0,0x00A2,0x00A3,0x00A7,0x2022,0x00B6,0x00DF,
137 0x00AE,0x00A9,0x2122,0x00B4,0x00A8,0x2260,0x00C6,0x00D8,
138 0x221E,0x00B1,0x2264,0x2265,0x00A5,0x00B5,0x2202,0x2211,
139 0x220F,0x03C0,0x222B,0x00AA,0x00BA,0x03A9,0x00E6,0x00F8,
140 0x00BF,0x00A1,0x00AC,0x221A,0x0192,0x2248,0x2206,0x00AB,
141 0x00BB,0x2026,0x00A0,0x00C0,0x00C3,0x00D5,0x0152,0x0153,
142 0x2013,0x2014,0x201C,0x201D,0x2018,0x2019,0x00F7,0x25CA,
143 0x00FF,0x0178,0x2044,0x20AC,0x2039,0x203A,0xFB01,0xFB02,
144 0x2021,0x00B7,0x201A,0x201E,0x2030,0x00C2,0x00CA,0x00C1,
145 0x00CB,0x00C8,0x00CD,0x00CE,0x00CF,0x00CC,0x00D3,0x00D4,
146 0xF8FF,0x00D2,0x00DA,0x00DB,0x00D9,0x0131,0x02C6,0x02DC,
147 0x00AF,0x02D8,0x02D9,0x02DA,0x00B8,0x02DD,0x02DB,0x02C7,
150 static int mov_read_mac_string(MOVContext *c, AVIOContext *pb, int len,
151 char *dst, int dstlen)
154 char *end = dst+dstlen-1;
157 for (i = 0; i < len; i++) {
158 uint8_t t, c = avio_r8(pb);
159 if (c < 0x80 && p < end)
162 PUT_UTF8(mac_to_unicode[c-0x80], t, if (p < end) *p++ = t;);
168 static int mov_read_udta_string(MOVContext *c, AVIOContext *pb, MOVAtom atom)
170 #ifdef MOV_EXPORT_ALL_METADATA
173 char str[1024], key2[16], language[4] = {0};
174 const char *key = NULL;
175 uint16_t str_size, langcode = 0;
176 uint32_t data_type = 0;
177 int (*parse)(MOVContext*, AVIOContext*, unsigned, const char*) = NULL;
180 case MKTAG(0xa9,'n','a','m'): key = "title"; break;
181 case MKTAG(0xa9,'a','u','t'):
182 case MKTAG(0xa9,'A','R','T'): key = "artist"; break;
183 case MKTAG( 'a','A','R','T'): key = "album_artist"; break;
184 case MKTAG(0xa9,'w','r','t'): key = "composer"; break;
185 case MKTAG( 'c','p','r','t'):
186 case MKTAG(0xa9,'c','p','y'): key = "copyright"; break;
187 case MKTAG(0xa9,'c','m','t'):
188 case MKTAG(0xa9,'i','n','f'): key = "comment"; break;
189 case MKTAG(0xa9,'a','l','b'): key = "album"; break;
190 case MKTAG(0xa9,'d','a','y'): key = "date"; break;
191 case MKTAG(0xa9,'g','e','n'): key = "genre"; break;
192 case MKTAG( 'g','n','r','e'): key = "genre";
193 parse = mov_metadata_gnre; break;
194 case MKTAG(0xa9,'t','o','o'):
195 case MKTAG(0xa9,'s','w','r'): key = "encoder"; break;
196 case MKTAG(0xa9,'e','n','c'): key = "encoder"; break;
197 case MKTAG( 'd','e','s','c'): key = "description";break;
198 case MKTAG( 'l','d','e','s'): key = "synopsis"; break;
199 case MKTAG( 't','v','s','h'): key = "show"; break;
200 case MKTAG( 't','v','e','n'): key = "episode_id";break;
201 case MKTAG( 't','v','n','n'): key = "network"; break;
202 case MKTAG( 't','r','k','n'): key = "track";
203 parse = mov_metadata_track_or_disc_number; break;
204 case MKTAG( 'd','i','s','k'): key = "disc";
205 parse = mov_metadata_track_or_disc_number; break;
206 case MKTAG( 't','v','e','s'): key = "episode_sort";
207 parse = mov_metadata_int8_bypass_padding; break;
208 case MKTAG( 't','v','s','n'): key = "season_number";
209 parse = mov_metadata_int8_bypass_padding; break;
210 case MKTAG( 's','t','i','k'): key = "media_type";
211 parse = mov_metadata_int8_no_padding; break;
212 case MKTAG( 'h','d','v','d'): key = "hd_video";
213 parse = mov_metadata_int8_no_padding; break;
214 case MKTAG( 'p','g','a','p'): key = "gapless_playback";
215 parse = mov_metadata_int8_no_padding; break;
218 if (c->itunes_metadata && atom.size > 8) {
219 int data_size = avio_rb32(pb);
220 int tag = avio_rl32(pb);
221 if (tag == MKTAG('d','a','t','a')) {
222 data_type = avio_rb32(pb); // type
223 avio_rb32(pb); // unknown
224 str_size = data_size - 16;
227 } else if (atom.size > 4 && key && !c->itunes_metadata) {
228 str_size = avio_rb16(pb); // string length
229 langcode = avio_rb16(pb);
230 ff_mov_lang_to_iso639(langcode, language);
233 str_size = atom.size;
235 #ifdef MOV_EXPORT_ALL_METADATA
237 snprintf(tmp_key, 5, "%.4s", (char*)&atom.type);
245 return AVERROR_INVALIDDATA;
247 str_size = FFMIN3(sizeof(str)-1, str_size, atom.size);
250 parse(c, pb, str_size, key);
252 if (data_type == 3 || (data_type == 0 && langcode < 0x800)) { // MAC Encoded
253 mov_read_mac_string(c, pb, str_size, str, sizeof(str));
255 avio_read(pb, str, str_size);
258 av_dict_set(&c->fc->metadata, key, str, 0);
259 if (*language && strcmp(language, "und")) {
260 snprintf(key2, sizeof(key2), "%s-%s", key, language);
261 av_dict_set(&c->fc->metadata, key2, str, 0);
264 av_dlog(c->fc, "lang \"%3s\" ", language);
265 av_dlog(c->fc, "tag \"%s\" value \"%s\" atom \"%.4s\" %d %"PRId64"\n",
266 key, str, (char*)&atom.type, str_size, atom.size);
271 static int mov_read_chpl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
274 int i, nb_chapters, str_len, version;
277 if ((atom.size -= 5) < 0)
280 version = avio_r8(pb);
283 avio_rb32(pb); // ???
284 nb_chapters = avio_r8(pb);
286 for (i = 0; i < nb_chapters; i++) {
290 start = avio_rb64(pb);
291 str_len = avio_r8(pb);
293 if ((atom.size -= 9+str_len) < 0)
296 avio_read(pb, str, str_len);
298 avpriv_new_chapter(c->fc, i, (AVRational){1,10000000}, start, AV_NOPTS_VALUE, str);
303 static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom)
305 int64_t total_size = 0;
310 atom.size = INT64_MAX;
311 while (total_size + 8 < atom.size && !pb->eof_reached) {
312 int (*parse)(MOVContext*, AVIOContext*, MOVAtom) = NULL;
315 if (atom.size >= 8) {
316 a.size = avio_rb32(pb);
317 a.type = avio_rl32(pb);
319 av_dlog(c->fc, "type: %08x '%.4s' parent:'%.4s' sz: %"PRId64" %"PRId64" %"PRId64"\n",
320 a.type, (char*)&a.type, (char*)&atom.type, a.size, total_size, atom.size);
322 if (a.size == 1) { /* 64 bit extended size */
323 a.size = avio_rb64(pb) - 8;
327 a.size = atom.size - total_size;
334 a.size = FFMIN(a.size, atom.size - total_size);
336 for (i = 0; mov_default_parse_table[i].type; i++)
337 if (mov_default_parse_table[i].type == a.type) {
338 parse = mov_default_parse_table[i].parse;
342 // container is user data
343 if (!parse && (atom.type == MKTAG('u','d','t','a') ||
344 atom.type == MKTAG('i','l','s','t')))
345 parse = mov_read_udta_string;
347 if (!parse) { /* skip leaf atoms data */
348 avio_skip(pb, a.size);
350 int64_t start_pos = avio_tell(pb);
352 int err = parse(c, pb, a);
355 if (c->found_moov && c->found_mdat &&
356 ((!pb->seekable || c->fc->flags & AVFMT_FLAG_IGNIDX) ||
357 start_pos + a.size == avio_size(pb))) {
358 if (!pb->seekable || c->fc->flags & AVFMT_FLAG_IGNIDX)
359 c->next_root_atom = start_pos + a.size;
362 left = a.size - avio_tell(pb) + start_pos;
363 if (left > 0) /* skip garbage at atom end */
367 total_size += a.size;
370 if (total_size < atom.size && atom.size < 0x7ffff)
371 avio_skip(pb, atom.size - total_size);
376 static int mov_read_dref(MOVContext *c, AVIOContext *pb, MOVAtom atom)
379 MOVStreamContext *sc;
382 if (c->fc->nb_streams < 1)
384 st = c->fc->streams[c->fc->nb_streams-1];
387 avio_rb32(pb); // version + flags
388 entries = avio_rb32(pb);
389 if (entries >= UINT_MAX / sizeof(*sc->drefs))
390 return AVERROR_INVALIDDATA;
392 sc->drefs = av_mallocz(entries * sizeof(*sc->drefs));
394 return AVERROR(ENOMEM);
395 sc->drefs_count = entries;
397 for (i = 0; i < sc->drefs_count; i++) {
398 MOVDref *dref = &sc->drefs[i];
399 uint32_t size = avio_rb32(pb);
400 int64_t next = avio_tell(pb) + size - 4;
403 return AVERROR_INVALIDDATA;
405 dref->type = avio_rl32(pb);
406 avio_rb32(pb); // version + flags
407 av_dlog(c->fc, "type %.4s size %d\n", (char*)&dref->type, size);
409 if (dref->type == MKTAG('a','l','i','s') && size > 150) {
410 /* macintosh alias record */
411 uint16_t volume_len, len;
416 volume_len = avio_r8(pb);
417 volume_len = FFMIN(volume_len, 27);
418 avio_read(pb, dref->volume, 27);
419 dref->volume[volume_len] = 0;
420 av_log(c->fc, AV_LOG_DEBUG, "volume %s, len %d\n", dref->volume, volume_len);
425 len = FFMIN(len, 63);
426 avio_read(pb, dref->filename, 63);
427 dref->filename[len] = 0;
428 av_log(c->fc, AV_LOG_DEBUG, "filename %s, len %d\n", dref->filename, len);
432 /* read next level up_from_alias/down_to_target */
433 dref->nlvl_from = avio_rb16(pb);
434 dref->nlvl_to = avio_rb16(pb);
435 av_log(c->fc, AV_LOG_DEBUG, "nlvl from %d, nlvl to %d\n",
436 dref->nlvl_from, dref->nlvl_to);
440 for (type = 0; type != -1 && avio_tell(pb) < next; ) {
441 type = avio_rb16(pb);
443 av_log(c->fc, AV_LOG_DEBUG, "type %d, len %d\n", type, len);
446 if (type == 2) { // absolute path
448 dref->path = av_mallocz(len+1);
450 return AVERROR(ENOMEM);
451 avio_read(pb, dref->path, len);
452 if (len > volume_len && !strncmp(dref->path, dref->volume, volume_len)) {
454 memmove(dref->path, dref->path+volume_len, len);
457 for (j = 0; j < len; j++)
458 if (dref->path[j] == ':')
460 av_log(c->fc, AV_LOG_DEBUG, "path %s\n", dref->path);
461 } else if (type == 0) { // directory name
463 dref->dir = av_malloc(len+1);
465 return AVERROR(ENOMEM);
466 avio_read(pb, dref->dir, len);
468 for (j = 0; j < len; j++)
469 if (dref->dir[j] == ':')
471 av_log(c->fc, AV_LOG_DEBUG, "dir %s\n", dref->dir);
476 avio_seek(pb, next, SEEK_SET);
481 static int mov_read_hdlr(MOVContext *c, AVIOContext *pb, MOVAtom atom)
485 uint32_t av_unused ctype;
487 if (c->fc->nb_streams < 1) // meta before first trak
490 st = c->fc->streams[c->fc->nb_streams-1];
492 avio_r8(pb); /* version */
493 avio_rb24(pb); /* flags */
496 ctype = avio_rl32(pb);
497 type = avio_rl32(pb); /* component subtype */
499 av_dlog(c->fc, "ctype= %.4s (0x%08x)\n", (char*)&ctype, ctype);
500 av_dlog(c->fc, "stype= %.4s\n", (char*)&type);
502 if (type == MKTAG('v','i','d','e'))
503 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
504 else if (type == MKTAG('s','o','u','n'))
505 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
506 else if (type == MKTAG('m','1','a',' '))
507 st->codec->codec_id = CODEC_ID_MP2;
508 else if ((type == MKTAG('s','u','b','p')) || (type == MKTAG('c','l','c','p')))
509 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
511 avio_rb32(pb); /* component manufacture */
512 avio_rb32(pb); /* component flags */
513 avio_rb32(pb); /* component flags mask */
518 int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb, MOVAtom atom)
523 if (fc->nb_streams < 1)
525 st = fc->streams[fc->nb_streams-1];
527 avio_rb32(pb); /* version + flags */
528 ff_mp4_read_descr(fc, pb, &tag);
529 if (tag == MP4ESDescrTag) {
530 ff_mp4_parse_es_descr(pb, NULL);
532 avio_rb16(pb); /* ID */
534 ff_mp4_read_descr(fc, pb, &tag);
535 if (tag == MP4DecConfigDescrTag)
536 ff_mp4_read_dec_config_descr(fc, st, pb);
540 static int mov_read_esds(MOVContext *c, AVIOContext *pb, MOVAtom atom)
542 return ff_mov_read_esds(c->fc, pb, atom);
545 static int mov_read_dac3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
548 int ac3info, acmod, lfeon, bsmod;
550 if (c->fc->nb_streams < 1)
552 st = c->fc->streams[c->fc->nb_streams-1];
554 ac3info = avio_rb24(pb);
555 bsmod = (ac3info >> 14) & 0x7;
556 acmod = (ac3info >> 11) & 0x7;
557 lfeon = (ac3info >> 10) & 0x1;
558 st->codec->channels = ((int[]){2,1,2,3,3,4,4,5})[acmod] + lfeon;
559 st->codec->channel_layout = avpriv_ac3_channel_layout_tab[acmod];
561 st->codec->channel_layout |= AV_CH_LOW_FREQUENCY;
562 st->codec->audio_service_type = bsmod;
563 if (st->codec->channels > 1 && bsmod == 0x7)
564 st->codec->audio_service_type = AV_AUDIO_SERVICE_TYPE_KARAOKE;
569 static int mov_read_dec3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
572 int eac3info, acmod, lfeon, bsmod;
574 if (c->fc->nb_streams < 1)
576 st = c->fc->streams[c->fc->nb_streams-1];
578 /* No need to parse fields for additional independent substreams and its
579 * associated dependent substreams since libavcodec's E-AC-3 decoder
580 * does not support them yet. */
581 avio_rb16(pb); /* data_rate and num_ind_sub */
582 eac3info = avio_rb24(pb);
583 bsmod = (eac3info >> 12) & 0x1f;
584 acmod = (eac3info >> 9) & 0x7;
585 lfeon = (eac3info >> 8) & 0x1;
586 st->codec->channel_layout = avpriv_ac3_channel_layout_tab[acmod];
588 st->codec->channel_layout |= AV_CH_LOW_FREQUENCY;
589 st->codec->channels = av_get_channel_layout_nb_channels(st->codec->channel_layout);
590 st->codec->audio_service_type = bsmod;
591 if (st->codec->channels > 1 && bsmod == 0x7)
592 st->codec->audio_service_type = AV_AUDIO_SERVICE_TYPE_KARAOKE;
597 static int mov_read_chan(MOVContext *c, AVIOContext *pb, MOVAtom atom)
600 uint8_t av_unused version;
601 uint32_t av_unused flags;
602 uint32_t layout_tag, bitmap, num_descr, label_mask;
605 if (c->fc->nb_streams < 1)
607 st = c->fc->streams[c->fc->nb_streams-1];
612 version = avio_r8(pb);
613 flags = avio_rb24(pb);
615 layout_tag = avio_rb32(pb);
616 bitmap = avio_rb32(pb);
617 num_descr = avio_rb32(pb);
619 if (atom.size < 16ULL + num_descr * 20ULL)
622 av_dlog(c->fc, "chan: size=%ld version=%u flags=%u layout=%u bitmap=%u num_descr=%u\n",
623 atom.size, version, flags, layout_tag, bitmap, num_descr);
626 for (i = 0; i < num_descr; i++) {
628 label = avio_rb32(pb); // mChannelLabel
629 avio_rb32(pb); // mChannelFlags
630 avio_rl32(pb); // mCoordinates[0]
631 avio_rl32(pb); // mCoordinates[1]
632 avio_rl32(pb); // mCoordinates[2]
633 if (layout_tag == 0) {
634 uint32_t mask_incr = ff_mov_get_channel_label(label);
635 if (mask_incr == 0) {
639 label_mask |= mask_incr;
643 st->codec->channel_layout = label_mask;
645 st->codec->channel_layout = ff_mov_get_channel_layout(layout_tag, bitmap);
650 static int mov_read_wfex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
654 if (c->fc->nb_streams < 1)
656 st = c->fc->streams[c->fc->nb_streams-1];
658 ff_get_wav_header(pb, st->codec, atom.size);
663 static int mov_read_pasp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
665 const int num = avio_rb32(pb);
666 const int den = avio_rb32(pb);
669 if (c->fc->nb_streams < 1)
671 st = c->fc->streams[c->fc->nb_streams-1];
673 if ((st->sample_aspect_ratio.den != 1 || st->sample_aspect_ratio.num) && // default
674 (den != st->sample_aspect_ratio.den || num != st->sample_aspect_ratio.num)) {
675 av_log(c->fc, AV_LOG_WARNING,
676 "sample aspect ratio already set to %d:%d, ignoring 'pasp' atom (%d:%d)\n",
677 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
679 } else if (den != 0) {
680 st->sample_aspect_ratio.num = num;
681 st->sample_aspect_ratio.den = den;
686 /* this atom contains actual media data */
687 static int mov_read_mdat(MOVContext *c, AVIOContext *pb, MOVAtom atom)
689 if (atom.size == 0) /* wrong one (MP4) */
692 return 0; /* now go for moov */
695 /* read major brand, minor version and compatible brands and store them as metadata */
696 static int mov_read_ftyp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
700 char minor_ver_str[11]; /* 32 bit integer -> 10 digits + null */
701 char* comp_brands_str;
702 uint8_t type[5] = {0};
704 avio_read(pb, type, 4);
705 if (strcmp(type, "qt "))
707 av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
708 av_dict_set(&c->fc->metadata, "major_brand", type, 0);
709 minor_ver = avio_rb32(pb); /* minor version */
710 snprintf(minor_ver_str, sizeof(minor_ver_str), "%d", minor_ver);
711 av_dict_set(&c->fc->metadata, "minor_version", minor_ver_str, 0);
713 comp_brand_size = atom.size - 8;
714 if (comp_brand_size < 0)
715 return AVERROR_INVALIDDATA;
716 comp_brands_str = av_malloc(comp_brand_size + 1); /* Add null terminator */
717 if (!comp_brands_str)
718 return AVERROR(ENOMEM);
719 avio_read(pb, comp_brands_str, comp_brand_size);
720 comp_brands_str[comp_brand_size] = 0;
721 av_dict_set(&c->fc->metadata, "compatible_brands", comp_brands_str, 0);
722 av_freep(&comp_brands_str);
727 /* this atom should contain all header atoms */
728 static int mov_read_moov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
732 if ((ret = mov_read_default(c, pb, atom)) < 0)
734 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
735 /* so we don't parse the whole file if over a network */
737 return 0; /* now go for mdat */
740 static int mov_read_moof(MOVContext *c, AVIOContext *pb, MOVAtom atom)
742 c->fragment.moof_offset = avio_tell(pb) - 8;
743 av_dlog(c->fc, "moof offset %"PRIx64"\n", c->fragment.moof_offset);
744 return mov_read_default(c, pb, atom);
747 static void mov_metadata_creation_time(AVDictionary **metadata, time_t time)
752 time -= 2082844800; /* seconds between 1904-01-01 and Epoch */
755 strftime(buffer, sizeof(buffer), "%Y-%m-%d %H:%M:%S", ptm);
756 av_dict_set(metadata, "creation_time", buffer, 0);
760 static int mov_read_mdhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
763 MOVStreamContext *sc;
765 char language[4] = {0};
767 time_t creation_time;
769 if (c->fc->nb_streams < 1)
771 st = c->fc->streams[c->fc->nb_streams-1];
774 version = avio_r8(pb);
776 av_log_ask_for_sample(c, "unsupported version %d\n", version);
777 return AVERROR_PATCHWELCOME;
779 avio_rb24(pb); /* flags */
781 creation_time = avio_rb64(pb);
784 creation_time = avio_rb32(pb);
785 avio_rb32(pb); /* modification time */
787 mov_metadata_creation_time(&st->metadata, creation_time);
789 sc->time_scale = avio_rb32(pb);
790 st->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
792 lang = avio_rb16(pb); /* language */
793 if (ff_mov_lang_to_iso639(lang, language))
794 av_dict_set(&st->metadata, "language", language, 0);
795 avio_rb16(pb); /* quality */
800 static int mov_read_mvhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
802 time_t creation_time;
803 int version = avio_r8(pb); /* version */
804 avio_rb24(pb); /* flags */
807 creation_time = avio_rb64(pb);
810 creation_time = avio_rb32(pb);
811 avio_rb32(pb); /* modification time */
813 mov_metadata_creation_time(&c->fc->metadata, creation_time);
814 c->time_scale = avio_rb32(pb); /* time scale */
816 av_dlog(c->fc, "time scale = %i\n", c->time_scale);
818 c->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
819 avio_rb32(pb); /* preferred scale */
821 avio_rb16(pb); /* preferred volume */
823 avio_skip(pb, 10); /* reserved */
825 avio_skip(pb, 36); /* display matrix */
827 avio_rb32(pb); /* preview time */
828 avio_rb32(pb); /* preview duration */
829 avio_rb32(pb); /* poster time */
830 avio_rb32(pb); /* selection time */
831 avio_rb32(pb); /* selection duration */
832 avio_rb32(pb); /* current time */
833 avio_rb32(pb); /* next track ID */
838 static int mov_read_smi(MOVContext *c, AVIOContext *pb, MOVAtom atom)
842 if (c->fc->nb_streams < 1)
844 st = c->fc->streams[c->fc->nb_streams-1];
846 if ((uint64_t)atom.size > (1<<30))
847 return AVERROR_INVALIDDATA;
849 // currently SVQ3 decoder expect full STSD header - so let's fake it
850 // this should be fixed and just SMI header should be passed
851 av_free(st->codec->extradata);
852 st->codec->extradata = av_mallocz(atom.size + 0x5a + FF_INPUT_BUFFER_PADDING_SIZE);
853 if (!st->codec->extradata)
854 return AVERROR(ENOMEM);
855 st->codec->extradata_size = 0x5a + atom.size;
856 memcpy(st->codec->extradata, "SVQ3", 4); // fake
857 avio_read(pb, st->codec->extradata + 0x5a, atom.size);
858 av_dlog(c->fc, "Reading SMI %"PRId64" %s\n", atom.size, st->codec->extradata + 0x5a);
862 static int mov_read_enda(MOVContext *c, AVIOContext *pb, MOVAtom atom)
867 if (c->fc->nb_streams < 1)
869 st = c->fc->streams[c->fc->nb_streams-1];
871 little_endian = avio_rb16(pb);
872 av_dlog(c->fc, "enda %d\n", little_endian);
873 if (little_endian == 1) {
874 switch (st->codec->codec_id) {
875 case CODEC_ID_PCM_S24BE:
876 st->codec->codec_id = CODEC_ID_PCM_S24LE;
878 case CODEC_ID_PCM_S32BE:
879 st->codec->codec_id = CODEC_ID_PCM_S32LE;
881 case CODEC_ID_PCM_F32BE:
882 st->codec->codec_id = CODEC_ID_PCM_F32LE;
884 case CODEC_ID_PCM_F64BE:
885 st->codec->codec_id = CODEC_ID_PCM_F64LE;
894 static int mov_read_fiel(MOVContext *c, AVIOContext *pb, MOVAtom atom)
897 unsigned mov_field_order;
898 enum AVFieldOrder decoded_field_order = AV_FIELD_UNKNOWN;
900 if (c->fc->nb_streams < 1) // will happen with jp2 files
902 st = c->fc->streams[c->fc->nb_streams-1];
904 return AVERROR_INVALIDDATA;
905 mov_field_order = avio_rb16(pb);
906 if ((mov_field_order & 0xFF00) == 0x0100)
907 decoded_field_order = AV_FIELD_PROGRESSIVE;
908 else if ((mov_field_order & 0xFF00) == 0x0200) {
909 switch (mov_field_order & 0xFF) {
910 case 0x01: decoded_field_order = AV_FIELD_TT;
912 case 0x06: decoded_field_order = AV_FIELD_BB;
914 case 0x09: decoded_field_order = AV_FIELD_TB;
916 case 0x0E: decoded_field_order = AV_FIELD_BT;
920 if (decoded_field_order == AV_FIELD_UNKNOWN && mov_field_order) {
921 av_log(NULL, AV_LOG_ERROR, "Unknown MOV field order 0x%04x\n", mov_field_order);
923 st->codec->field_order = decoded_field_order;
928 /* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
929 static int mov_read_extradata(MOVContext *c, AVIOContext *pb, MOVAtom atom)
935 if (c->fc->nb_streams < 1) // will happen with jp2 files
937 st= c->fc->streams[c->fc->nb_streams-1];
938 size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
939 if (size > INT_MAX || (uint64_t)atom.size > INT_MAX)
940 return AVERROR_INVALIDDATA;
941 buf= av_realloc(st->codec->extradata, size);
943 return AVERROR(ENOMEM);
944 st->codec->extradata= buf;
945 buf+= st->codec->extradata_size;
946 st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE;
947 AV_WB32( buf , atom.size + 8);
948 AV_WL32( buf + 4, atom.type);
949 avio_read(pb, buf + 8, atom.size);
953 static int mov_read_wave(MOVContext *c, AVIOContext *pb, MOVAtom atom)
957 if (c->fc->nb_streams < 1)
959 st = c->fc->streams[c->fc->nb_streams-1];
961 if ((uint64_t)atom.size > (1<<30))
962 return AVERROR_INVALIDDATA;
964 if (st->codec->codec_id == CODEC_ID_QDM2 || st->codec->codec_id == CODEC_ID_QDMC) {
965 // pass all frma atom to codec, needed at least for QDMC and QDM2
966 av_free(st->codec->extradata);
967 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
968 if (!st->codec->extradata)
969 return AVERROR(ENOMEM);
970 st->codec->extradata_size = atom.size;
971 avio_read(pb, st->codec->extradata, atom.size);
972 } else if (atom.size > 8) { /* to read frma, esds atoms */
974 if ((ret = mov_read_default(c, pb, atom)) < 0)
977 avio_skip(pb, atom.size);
982 * This function reads atom content and puts data in extradata without tag
983 * nor size unlike mov_read_extradata.
985 static int mov_read_glbl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
989 if (c->fc->nb_streams < 1)
991 st = c->fc->streams[c->fc->nb_streams-1];
993 if ((uint64_t)atom.size > (1<<30))
994 return AVERROR_INVALIDDATA;
996 if (atom.size >= 10) {
997 // Broken files created by legacy versions of libavformat will
998 // wrap a whole fiel atom inside of a glbl atom.
999 unsigned size = avio_rb32(pb);
1000 unsigned type = avio_rl32(pb);
1001 avio_seek(pb, -8, SEEK_CUR);
1002 if (type == MKTAG('f','i','e','l') && size == atom.size)
1003 return mov_read_default(c, pb, atom);
1005 av_free(st->codec->extradata);
1006 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
1007 if (!st->codec->extradata)
1008 return AVERROR(ENOMEM);
1009 st->codec->extradata_size = atom.size;
1010 avio_read(pb, st->codec->extradata, atom.size);
1014 static int mov_read_dvc1(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1017 uint8_t profile_level;
1019 if (c->fc->nb_streams < 1)
1021 st = c->fc->streams[c->fc->nb_streams-1];
1023 if (atom.size >= (1<<28) || atom.size < 7)
1024 return AVERROR_INVALIDDATA;
1026 profile_level = avio_r8(pb);
1027 if (profile_level & 0xf0 != 0xc0)
1030 av_free(st->codec->extradata);
1031 st->codec->extradata = av_mallocz(atom.size - 7 + FF_INPUT_BUFFER_PADDING_SIZE);
1032 if (!st->codec->extradata)
1033 return AVERROR(ENOMEM);
1034 st->codec->extradata_size = atom.size - 7;
1035 avio_seek(pb, 6, SEEK_CUR);
1036 avio_read(pb, st->codec->extradata, st->codec->extradata_size);
1041 * An strf atom is a BITMAPINFOHEADER struct. This struct is 40 bytes itself,
1042 * but can have extradata appended at the end after the 40 bytes belonging
1045 static int mov_read_strf(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1049 if (c->fc->nb_streams < 1)
1051 if (atom.size <= 40)
1053 st = c->fc->streams[c->fc->nb_streams-1];
1055 if ((uint64_t)atom.size > (1<<30))
1056 return AVERROR_INVALIDDATA;
1058 av_free(st->codec->extradata);
1059 st->codec->extradata = av_mallocz(atom.size - 40 + FF_INPUT_BUFFER_PADDING_SIZE);
1060 if (!st->codec->extradata)
1061 return AVERROR(ENOMEM);
1062 st->codec->extradata_size = atom.size - 40;
1064 avio_read(pb, st->codec->extradata, atom.size - 40);
1068 static int mov_read_stco(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1071 MOVStreamContext *sc;
1072 unsigned int i, entries;
1074 if (c->fc->nb_streams < 1)
1076 st = c->fc->streams[c->fc->nb_streams-1];
1079 avio_r8(pb); /* version */
1080 avio_rb24(pb); /* flags */
1082 entries = avio_rb32(pb);
1086 if (entries >= UINT_MAX/sizeof(int64_t))
1087 return AVERROR_INVALIDDATA;
1089 sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
1090 if (!sc->chunk_offsets)
1091 return AVERROR(ENOMEM);
1092 sc->chunk_count = entries;
1094 if (atom.type == MKTAG('s','t','c','o'))
1095 for (i=0; i<entries; i++)
1096 sc->chunk_offsets[i] = avio_rb32(pb);
1097 else if (atom.type == MKTAG('c','o','6','4'))
1098 for (i=0; i<entries; i++)
1099 sc->chunk_offsets[i] = avio_rb64(pb);
1101 return AVERROR_INVALIDDATA;
1107 * Compute codec id for 'lpcm' tag.
1108 * See CoreAudioTypes and AudioStreamBasicDescription at Apple.
1110 enum CodecID ff_mov_get_lpcm_codec_id(int bps, int flags)
1112 if (flags & 1) { // floating point
1113 if (flags & 2) { // big endian
1114 if (bps == 32) return CODEC_ID_PCM_F32BE;
1115 else if (bps == 64) return CODEC_ID_PCM_F64BE;
1117 if (bps == 32) return CODEC_ID_PCM_F32LE;
1118 else if (bps == 64) return CODEC_ID_PCM_F64LE;
1124 if (flags & 4) return CODEC_ID_PCM_S8;
1125 else return CODEC_ID_PCM_U8;
1126 else if (bps == 16) return CODEC_ID_PCM_S16BE;
1127 else if (bps == 24) return CODEC_ID_PCM_S24BE;
1128 else if (bps == 32) return CODEC_ID_PCM_S32BE;
1131 if (flags & 4) return CODEC_ID_PCM_S8;
1132 else return CODEC_ID_PCM_U8;
1133 else if (bps == 16) return CODEC_ID_PCM_S16LE;
1134 else if (bps == 24) return CODEC_ID_PCM_S24LE;
1135 else if (bps == 32) return CODEC_ID_PCM_S32LE;
1138 return CODEC_ID_NONE;
1141 int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries)
1144 MOVStreamContext *sc;
1145 int j, pseudo_stream_id;
1147 if (c->fc->nb_streams < 1)
1149 st = c->fc->streams[c->fc->nb_streams-1];
1152 for (pseudo_stream_id=0; pseudo_stream_id<entries; pseudo_stream_id++) {
1153 //Parsing Sample description table
1156 MOVAtom a = { AV_RL32("stsd") };
1157 int64_t start_pos = avio_tell(pb);
1158 int size = avio_rb32(pb); /* size */
1159 uint32_t format = avio_rl32(pb); /* data format */
1162 avio_rb32(pb); /* reserved */
1163 avio_rb16(pb); /* reserved */
1164 dref_id = avio_rb16(pb);
1167 if (st->codec->codec_tag &&
1168 st->codec->codec_tag != format &&
1169 (c->fc->video_codec_id ? ff_codec_get_id(ff_codec_movvideo_tags, format) != c->fc->video_codec_id
1170 : st->codec->codec_tag != MKTAG('j','p','e','g'))
1172 /* Multiple fourcc, we skip JPEG. This is not correct, we should
1173 * export it as a separate AVStream but this needs a few changes
1174 * in the MOV demuxer, patch welcome. */
1176 av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n");
1177 avio_skip(pb, size - (avio_tell(pb) - start_pos));
1180 /* we cannot demux concatenated h264 streams because of different extradata */
1181 if (st->codec->codec_tag && st->codec->codec_tag == AV_RL32("avc1"))
1183 sc->pseudo_stream_id = st->codec->codec_tag ? -1 : pseudo_stream_id;
1184 sc->dref_id= dref_id;
1186 st->codec->codec_tag = format;
1187 id = ff_codec_get_id(ff_codec_movaudio_tags, format);
1188 if (id<=0 && ((format&0xFFFF) == 'm'+('s'<<8) || (format&0xFFFF) == 'T'+('S'<<8)))
1189 id = ff_codec_get_id(ff_codec_wav_tags, av_bswap32(format)&0xFFFF);
1191 if (st->codec->codec_type != AVMEDIA_TYPE_VIDEO && id > 0) {
1192 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
1193 } else if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO && /* do not overwrite codec type */
1194 format && format != MKTAG('m','p','4','s')) { /* skip old asf mpeg4 tag */
1195 id = ff_codec_get_id(ff_codec_movvideo_tags, format);
1197 id = ff_codec_get_id(ff_codec_bmp_tags, format);
1199 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
1200 else if (st->codec->codec_type == AVMEDIA_TYPE_DATA){
1201 id = ff_codec_get_id(ff_codec_movsubtitle_tags, format);
1203 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
1207 av_dlog(c->fc, "size=%d 4CC= %c%c%c%c codec_type=%d\n", size,
1208 (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff,
1209 (format >> 24) & 0xff, st->codec->codec_type);
1211 if (st->codec->codec_type==AVMEDIA_TYPE_VIDEO) {
1212 unsigned int color_depth, len;
1213 int color_greyscale;
1216 st->codec->codec_id = id;
1217 avio_rb16(pb); /* version */
1218 avio_rb16(pb); /* revision level */
1219 avio_rb32(pb); /* vendor */
1220 avio_rb32(pb); /* temporal quality */
1221 avio_rb32(pb); /* spatial quality */
1223 st->codec->width = avio_rb16(pb); /* width */
1224 st->codec->height = avio_rb16(pb); /* height */
1226 avio_rb32(pb); /* horiz resolution */
1227 avio_rb32(pb); /* vert resolution */
1228 avio_rb32(pb); /* data size, always 0 */
1229 avio_rb16(pb); /* frames per samples */
1231 len = avio_r8(pb); /* codec name, pascal string */
1234 mov_read_mac_string(c, pb, len, st->codec->codec_name, 32);
1236 avio_skip(pb, 31 - len);
1237 /* codec_tag YV12 triggers an UV swap in rawdec.c */
1238 if (!memcmp(st->codec->codec_name, "Planar Y'CbCr 8-bit 4:2:0", 25))
1239 st->codec->codec_tag=MKTAG('I', '4', '2', '0');
1241 st->codec->bits_per_coded_sample = avio_rb16(pb); /* depth */
1242 color_table_id = avio_rb16(pb); /* colortable id */
1243 av_dlog(c->fc, "depth %d, ctab id %d\n",
1244 st->codec->bits_per_coded_sample, color_table_id);
1245 /* figure out the palette situation */
1246 color_depth = st->codec->bits_per_coded_sample & 0x1F;
1247 color_greyscale = st->codec->bits_per_coded_sample & 0x20;
1249 /* if the depth is 2, 4, or 8 bpp, file is palettized */
1250 if ((color_depth == 2) || (color_depth == 4) ||
1251 (color_depth == 8)) {
1252 /* for palette traversal */
1253 unsigned int color_start, color_count, color_end;
1254 unsigned char r, g, b;
1256 if (color_greyscale) {
1257 int color_index, color_dec;
1258 /* compute the greyscale palette */
1259 st->codec->bits_per_coded_sample = color_depth;
1260 color_count = 1 << color_depth;
1262 color_dec = 256 / (color_count - 1);
1263 for (j = 0; j < color_count; j++) {
1264 r = g = b = color_index;
1266 (r << 16) | (g << 8) | (b);
1267 color_index -= color_dec;
1268 if (color_index < 0)
1271 } else if (color_table_id) {
1272 const uint8_t *color_table;
1273 /* if flag bit 3 is set, use the default palette */
1274 color_count = 1 << color_depth;
1275 if (color_depth == 2)
1276 color_table = ff_qt_default_palette_4;
1277 else if (color_depth == 4)
1278 color_table = ff_qt_default_palette_16;
1280 color_table = ff_qt_default_palette_256;
1282 for (j = 0; j < color_count; j++) {
1283 r = color_table[j * 3 + 0];
1284 g = color_table[j * 3 + 1];
1285 b = color_table[j * 3 + 2];
1287 (r << 16) | (g << 8) | (b);
1290 /* load the palette from the file */
1291 color_start = avio_rb32(pb);
1292 color_count = avio_rb16(pb);
1293 color_end = avio_rb16(pb);
1294 if ((color_start <= 255) &&
1295 (color_end <= 255)) {
1296 for (j = color_start; j <= color_end; j++) {
1297 /* each R, G, or B component is 16 bits;
1298 * only use the top 8 bits; skip alpha bytes
1309 (r << 16) | (g << 8) | (b);
1313 sc->has_palette = 1;
1315 } else if (st->codec->codec_type==AVMEDIA_TYPE_AUDIO) {
1316 int bits_per_sample, flags;
1317 uint16_t version = avio_rb16(pb);
1319 st->codec->codec_id = id;
1320 avio_rb16(pb); /* revision level */
1321 avio_rb32(pb); /* vendor */
1323 st->codec->channels = avio_rb16(pb); /* channel count */
1324 av_dlog(c->fc, "audio channels %d\n", st->codec->channels);
1325 st->codec->bits_per_coded_sample = avio_rb16(pb); /* sample size */
1327 sc->audio_cid = avio_rb16(pb);
1328 avio_rb16(pb); /* packet size = 0 */
1330 st->codec->sample_rate = ((avio_rb32(pb) >> 16));
1332 //Read QT version 1 fields. In version 0 these do not exist.
1333 av_dlog(c->fc, "version =%d, isom =%d\n",version,c->isom);
1336 sc->samples_per_frame = avio_rb32(pb);
1337 avio_rb32(pb); /* bytes per packet */
1338 sc->bytes_per_frame = avio_rb32(pb);
1339 avio_rb32(pb); /* bytes per sample */
1340 } else if (version==2) {
1341 avio_rb32(pb); /* sizeof struct only */
1342 st->codec->sample_rate = av_int2double(avio_rb64(pb)); /* float 64 */
1343 st->codec->channels = avio_rb32(pb);
1344 avio_rb32(pb); /* always 0x7F000000 */
1345 st->codec->bits_per_coded_sample = avio_rb32(pb); /* bits per channel if sound is uncompressed */
1346 flags = avio_rb32(pb); /* lpcm format specific flag */
1347 sc->bytes_per_frame = avio_rb32(pb); /* bytes per audio packet if constant */
1348 sc->samples_per_frame = avio_rb32(pb); /* lpcm frames per audio packet if constant */
1349 if (format == MKTAG('l','p','c','m'))
1350 st->codec->codec_id = ff_mov_get_lpcm_codec_id(st->codec->bits_per_coded_sample, flags);
1354 switch (st->codec->codec_id) {
1355 case CODEC_ID_PCM_S8:
1356 case CODEC_ID_PCM_U8:
1357 if (st->codec->bits_per_coded_sample == 16)
1358 st->codec->codec_id = CODEC_ID_PCM_S16BE;
1360 case CODEC_ID_PCM_S16LE:
1361 case CODEC_ID_PCM_S16BE:
1362 if (st->codec->bits_per_coded_sample == 8)
1363 st->codec->codec_id = CODEC_ID_PCM_S8;
1364 else if (st->codec->bits_per_coded_sample == 24)
1365 st->codec->codec_id =
1366 st->codec->codec_id == CODEC_ID_PCM_S16BE ?
1367 CODEC_ID_PCM_S24BE : CODEC_ID_PCM_S24LE;
1369 /* set values for old format before stsd version 1 appeared */
1370 case CODEC_ID_MACE3:
1371 sc->samples_per_frame = 6;
1372 sc->bytes_per_frame = 2*st->codec->channels;
1374 case CODEC_ID_MACE6:
1375 sc->samples_per_frame = 6;
1376 sc->bytes_per_frame = 1*st->codec->channels;
1378 case CODEC_ID_ADPCM_IMA_QT:
1379 sc->samples_per_frame = 64;
1380 sc->bytes_per_frame = 34*st->codec->channels;
1383 sc->samples_per_frame = 160;
1384 sc->bytes_per_frame = 33;
1390 bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
1391 if (bits_per_sample) {
1392 st->codec->bits_per_coded_sample = bits_per_sample;
1393 sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
1395 } else if (st->codec->codec_type==AVMEDIA_TYPE_SUBTITLE){
1396 // ttxt stsd contains display flags, justification, background
1397 // color, fonts, and default styles, so fake an atom to read it
1398 MOVAtom fake_atom = { .size = size - (avio_tell(pb) - start_pos) };
1399 if (format != AV_RL32("mp4s")) // mp4s contains a regular esds atom
1400 mov_read_glbl(c, pb, fake_atom);
1401 st->codec->codec_id= id;
1402 st->codec->width = sc->width;
1403 st->codec->height = sc->height;
1405 /* other codec type, just skip (rtp, mp4s, tmcd ...) */
1406 avio_skip(pb, size - (avio_tell(pb) - start_pos));
1408 /* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */
1409 a.size = size - (avio_tell(pb) - start_pos);
1412 if ((ret = mov_read_default(c, pb, a)) < 0)
1414 } else if (a.size > 0)
1415 avio_skip(pb, a.size);
1418 if (st->codec->codec_type==AVMEDIA_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1)
1419 st->codec->sample_rate= sc->time_scale;
1421 /* special codec parameters handling */
1422 switch (st->codec->codec_id) {
1423 #if CONFIG_DV_DEMUXER
1424 case CODEC_ID_DVAUDIO:
1425 c->dv_fctx = avformat_alloc_context();
1426 c->dv_demux = avpriv_dv_init_demux(c->dv_fctx);
1428 av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
1429 return AVERROR(ENOMEM);
1431 sc->dv_audio_container = 1;
1432 st->codec->codec_id = CODEC_ID_PCM_S16LE;
1435 /* no ifdef since parameters are always those */
1436 case CODEC_ID_QCELP:
1437 // force sample rate for qcelp when not stored in mov
1438 if (st->codec->codec_tag != MKTAG('Q','c','l','p'))
1439 st->codec->sample_rate = 8000;
1440 st->codec->channels= 1; /* really needed */
1442 case CODEC_ID_AMR_NB:
1443 st->codec->channels= 1; /* really needed */
1444 /* force sample rate for amr, stsd in 3gp does not store sample rate */
1445 st->codec->sample_rate = 8000;
1447 case CODEC_ID_AMR_WB:
1448 st->codec->channels = 1;
1449 st->codec->sample_rate = 16000;
1453 st->codec->codec_type = AVMEDIA_TYPE_AUDIO; /* force type after stsd for m1a hdlr */
1454 st->need_parsing = AVSTREAM_PARSE_FULL;
1457 case CODEC_ID_ADPCM_MS:
1458 case CODEC_ID_ADPCM_IMA_WAV:
1459 st->codec->block_align = sc->bytes_per_frame;
1462 if (st->codec->extradata_size == 36) {
1463 st->codec->channels = AV_RB8 (st->codec->extradata+21);
1464 st->codec->sample_rate = AV_RB32(st->codec->extradata+32);
1468 st->need_parsing = AVSTREAM_PARSE_FULL;
1477 static int mov_read_stsd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1481 avio_r8(pb); /* version */
1482 avio_rb24(pb); /* flags */
1483 entries = avio_rb32(pb);
1485 return ff_mov_read_stsd_entries(c, pb, entries);
1488 static int mov_read_stsc(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, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
1508 if (entries >= UINT_MAX / sizeof(*sc->stsc_data))
1509 return AVERROR_INVALIDDATA;
1510 sc->stsc_data = av_malloc(entries * sizeof(*sc->stsc_data));
1512 return AVERROR(ENOMEM);
1513 sc->stsc_count = entries;
1515 for (i=0; i<entries; i++) {
1516 sc->stsc_data[i].first = avio_rb32(pb);
1517 sc->stsc_data[i].count = avio_rb32(pb);
1518 sc->stsc_data[i].id = avio_rb32(pb);
1523 static int mov_read_stps(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1526 MOVStreamContext *sc;
1527 unsigned i, entries;
1529 if (c->fc->nb_streams < 1)
1531 st = c->fc->streams[c->fc->nb_streams-1];
1534 avio_rb32(pb); // version + flags
1536 entries = avio_rb32(pb);
1537 if (entries >= UINT_MAX / sizeof(*sc->stps_data))
1538 return AVERROR_INVALIDDATA;
1539 sc->stps_data = av_malloc(entries * sizeof(*sc->stps_data));
1541 return AVERROR(ENOMEM);
1542 sc->stps_count = entries;
1544 for (i = 0; i < entries; i++) {
1545 sc->stps_data[i] = avio_rb32(pb);
1546 //av_dlog(c->fc, "stps %d\n", sc->stps_data[i]);
1552 static int mov_read_stss(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1555 MOVStreamContext *sc;
1556 unsigned int i, entries;
1558 if (c->fc->nb_streams < 1)
1560 st = c->fc->streams[c->fc->nb_streams-1];
1563 avio_r8(pb); /* version */
1564 avio_rb24(pb); /* flags */
1566 entries = avio_rb32(pb);
1568 av_dlog(c->fc, "keyframe_count = %d\n", entries);
1572 sc->keyframe_absent = 1;
1575 if (entries >= UINT_MAX / sizeof(int))
1576 return AVERROR_INVALIDDATA;
1577 sc->keyframes = av_malloc(entries * sizeof(int));
1579 return AVERROR(ENOMEM);
1580 sc->keyframe_count = entries;
1582 for (i=0; i<entries; i++) {
1583 sc->keyframes[i] = avio_rb32(pb);
1584 //av_dlog(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
1589 static int mov_read_stsz(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1592 MOVStreamContext *sc;
1593 unsigned int i, entries, sample_size, field_size, num_bytes;
1597 if (c->fc->nb_streams < 1)
1599 st = c->fc->streams[c->fc->nb_streams-1];
1602 avio_r8(pb); /* version */
1603 avio_rb24(pb); /* flags */
1605 if (atom.type == MKTAG('s','t','s','z')) {
1606 sample_size = avio_rb32(pb);
1607 if (!sc->sample_size) /* do not overwrite value computed in stsd */
1608 sc->sample_size = sample_size;
1612 avio_rb24(pb); /* reserved */
1613 field_size = avio_r8(pb);
1615 entries = avio_rb32(pb);
1617 av_dlog(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, entries);
1619 sc->sample_count = entries;
1623 if (field_size != 4 && field_size != 8 && field_size != 16 && field_size != 32) {
1624 av_log(c->fc, AV_LOG_ERROR, "Invalid sample field size %d\n", field_size);
1625 return AVERROR_INVALIDDATA;
1630 if (entries >= UINT_MAX / sizeof(int) || entries >= (UINT_MAX - 4) / field_size)
1631 return AVERROR_INVALIDDATA;
1632 sc->sample_sizes = av_malloc(entries * sizeof(int));
1633 if (!sc->sample_sizes)
1634 return AVERROR(ENOMEM);
1636 num_bytes = (entries*field_size+4)>>3;
1638 buf = av_malloc(num_bytes+FF_INPUT_BUFFER_PADDING_SIZE);
1640 av_freep(&sc->sample_sizes);
1641 return AVERROR(ENOMEM);
1644 if (avio_read(pb, buf, num_bytes) < num_bytes) {
1645 av_freep(&sc->sample_sizes);
1647 return AVERROR_INVALIDDATA;
1650 init_get_bits(&gb, buf, 8*num_bytes);
1652 for (i = 0; i < entries; i++) {
1653 sc->sample_sizes[i] = get_bits_long(&gb, field_size);
1654 sc->data_size += sc->sample_sizes[i];
1661 static int mov_read_stts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1664 MOVStreamContext *sc;
1665 unsigned int i, entries;
1667 int64_t total_sample_count=0;
1669 if (c->fc->nb_streams < 1)
1671 st = c->fc->streams[c->fc->nb_streams-1];
1674 avio_r8(pb); /* version */
1675 avio_rb24(pb); /* flags */
1676 entries = avio_rb32(pb);
1678 av_dlog(c->fc, "track[%i].stts.entries = %i\n",
1679 c->fc->nb_streams-1, entries);
1683 if (entries >= UINT_MAX / sizeof(*sc->stts_data))
1684 return AVERROR(EINVAL);
1686 sc->stts_data = av_malloc(entries * sizeof(*sc->stts_data));
1688 return AVERROR(ENOMEM);
1690 sc->stts_count = entries;
1692 for (i=0; i<entries; i++) {
1693 int sample_duration;
1696 sample_count=avio_rb32(pb);
1697 sample_duration = avio_rb32(pb);
1698 sc->stts_data[i].count= sample_count;
1699 sc->stts_data[i].duration= sample_duration;
1701 av_dlog(c->fc, "sample_count=%d, sample_duration=%d\n",
1702 sample_count, sample_duration);
1704 duration+=(int64_t)sample_duration*sample_count;
1705 total_sample_count+=sample_count;
1708 st->nb_frames= total_sample_count;
1710 st->duration= duration;
1711 sc->track_end = duration;
1715 static int mov_read_ctts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1718 MOVStreamContext *sc;
1719 unsigned int i, entries;
1721 if (c->fc->nb_streams < 1)
1723 st = c->fc->streams[c->fc->nb_streams-1];
1726 avio_r8(pb); /* version */
1727 avio_rb24(pb); /* flags */
1728 entries = avio_rb32(pb);
1730 av_dlog(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
1734 if (entries >= UINT_MAX / sizeof(*sc->ctts_data))
1735 return AVERROR_INVALIDDATA;
1736 sc->ctts_data = av_malloc(entries * sizeof(*sc->ctts_data));
1738 return AVERROR(ENOMEM);
1739 sc->ctts_count = entries;
1741 for (i=0; i<entries; i++) {
1742 int count =avio_rb32(pb);
1743 int duration =avio_rb32(pb);
1745 sc->ctts_data[i].count = count;
1746 sc->ctts_data[i].duration= duration;
1748 sc->dts_shift = FFMAX(sc->dts_shift, -duration);
1751 av_dlog(c->fc, "dts shift %d\n", sc->dts_shift);
1756 static void mov_build_index(MOVContext *mov, AVStream *st)
1758 MOVStreamContext *sc = st->priv_data;
1759 int64_t current_offset;
1760 int64_t current_dts = 0;
1761 unsigned int stts_index = 0;
1762 unsigned int stsc_index = 0;
1763 unsigned int stss_index = 0;
1764 unsigned int stps_index = 0;
1766 uint64_t stream_size = 0;
1769 /* adjust first dts according to edit list */
1770 if (sc->time_offset && mov->time_scale > 0) {
1771 if (sc->time_offset < 0)
1772 sc->time_offset = av_rescale(sc->time_offset, sc->time_scale, mov->time_scale);
1773 current_dts = -sc->time_offset;
1774 if (sc->ctts_data && sc->stts_data && sc->stts_data[0].duration &&
1775 sc->ctts_data[0].duration / sc->stts_data[0].duration > 16) {
1776 /* more than 16 frames delay, dts are likely wrong
1777 this happens with files created by iMovie */
1779 st->codec->has_b_frames = 1;
1783 /* only use old uncompressed audio chunk demuxing when stts specifies it */
1784 if (!(st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
1785 sc->stts_count == 1 && sc->stts_data[0].duration == 1)) {
1786 unsigned int current_sample = 0;
1787 unsigned int stts_sample = 0;
1788 unsigned int sample_size;
1789 unsigned int distance = 0;
1790 int key_off = (sc->keyframes && sc->keyframes[0] > 0) || (sc->stps_data && sc->stps_data[0] > 0);
1792 current_dts -= sc->dts_shift;
1794 if (!sc->sample_count)
1796 if (sc->sample_count >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries)
1798 mem = av_realloc(st->index_entries, (st->nb_index_entries + sc->sample_count) * sizeof(*st->index_entries));
1801 st->index_entries = mem;
1802 st->index_entries_allocated_size = (st->nb_index_entries + sc->sample_count) * sizeof(*st->index_entries);
1804 for (i = 0; i < sc->chunk_count; i++) {
1805 current_offset = sc->chunk_offsets[i];
1806 while (stsc_index + 1 < sc->stsc_count &&
1807 i + 1 == sc->stsc_data[stsc_index + 1].first)
1809 for (j = 0; j < sc->stsc_data[stsc_index].count; j++) {
1811 if (current_sample >= sc->sample_count) {
1812 av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
1816 if (!sc->keyframe_absent && (!sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index])) {
1818 if (stss_index + 1 < sc->keyframe_count)
1820 } else if (sc->stps_count && current_sample+key_off == sc->stps_data[stps_index]) {
1822 if (stps_index + 1 < sc->stps_count)
1827 sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
1828 if (sc->pseudo_stream_id == -1 ||
1829 sc->stsc_data[stsc_index].id - 1 == sc->pseudo_stream_id) {
1830 AVIndexEntry *e = &st->index_entries[st->nb_index_entries++];
1831 e->pos = current_offset;
1832 e->timestamp = current_dts;
1833 e->size = sample_size;
1834 e->min_distance = distance;
1835 e->flags = keyframe ? AVINDEX_KEYFRAME : 0;
1836 av_dlog(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
1837 "size %d, distance %d, keyframe %d\n", st->index, current_sample,
1838 current_offset, current_dts, sample_size, distance, keyframe);
1841 current_offset += sample_size;
1842 stream_size += sample_size;
1843 current_dts += sc->stts_data[stts_index].duration;
1847 if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
1853 if (st->duration > 0)
1854 st->codec->bit_rate = stream_size*8*sc->time_scale/st->duration;
1856 unsigned chunk_samples, total = 0;
1858 // compute total chunk count
1859 for (i = 0; i < sc->stsc_count; i++) {
1860 unsigned count, chunk_count;
1862 chunk_samples = sc->stsc_data[i].count;
1863 if (i != sc->stsc_count - 1 &&
1864 sc->samples_per_frame && chunk_samples % sc->samples_per_frame) {
1865 av_log(mov->fc, AV_LOG_ERROR, "error unaligned chunk\n");
1869 if (sc->samples_per_frame >= 160) { // gsm
1870 count = chunk_samples / sc->samples_per_frame;
1871 } else if (sc->samples_per_frame > 1) {
1872 unsigned samples = (1024/sc->samples_per_frame)*sc->samples_per_frame;
1873 count = (chunk_samples+samples-1) / samples;
1875 count = (chunk_samples+1023) / 1024;
1878 if (i < sc->stsc_count - 1)
1879 chunk_count = sc->stsc_data[i+1].first - sc->stsc_data[i].first;
1881 chunk_count = sc->chunk_count - (sc->stsc_data[i].first - 1);
1882 total += chunk_count * count;
1885 av_dlog(mov->fc, "chunk count %d\n", total);
1886 if (total >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries)
1888 mem = av_realloc(st->index_entries, (st->nb_index_entries + total) * sizeof(*st->index_entries));
1891 st->index_entries = mem;
1892 st->index_entries_allocated_size = (st->nb_index_entries + total) * sizeof(*st->index_entries);
1895 for (i = 0; i < sc->chunk_count; i++) {
1896 current_offset = sc->chunk_offsets[i];
1897 if (stsc_index + 1 < sc->stsc_count &&
1898 i + 1 == sc->stsc_data[stsc_index + 1].first)
1900 chunk_samples = sc->stsc_data[stsc_index].count;
1902 while (chunk_samples > 0) {
1904 unsigned size, samples;
1906 if (sc->samples_per_frame >= 160) { // gsm
1907 samples = sc->samples_per_frame;
1908 size = sc->bytes_per_frame;
1910 if (sc->samples_per_frame > 1) {
1911 samples = FFMIN((1024 / sc->samples_per_frame)*
1912 sc->samples_per_frame, chunk_samples);
1913 size = (samples / sc->samples_per_frame) * sc->bytes_per_frame;
1915 samples = FFMIN(1024, chunk_samples);
1916 size = samples * sc->sample_size;
1920 if (st->nb_index_entries >= total) {
1921 av_log(mov->fc, AV_LOG_ERROR, "wrong chunk count %d\n", total);
1924 e = &st->index_entries[st->nb_index_entries++];
1925 e->pos = current_offset;
1926 e->timestamp = current_dts;
1928 e->min_distance = 0;
1929 e->flags = AVINDEX_KEYFRAME;
1930 av_dlog(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", "
1931 "size %d, duration %d\n", st->index, i, current_offset, current_dts,
1934 current_offset += size;
1935 current_dts += samples;
1936 chunk_samples -= samples;
1942 static int mov_open_dref(AVIOContext **pb, char *src, MOVDref *ref,
1943 AVIOInterruptCB *int_cb)
1945 /* try relative path, we do not try the absolute because it can leak information about our
1946 system to an attacker */
1947 if (ref->nlvl_to > 0 && ref->nlvl_from > 0) {
1948 char filename[1024];
1952 /* find a source dir */
1953 src_path = strrchr(src, '/');
1959 /* find a next level down to target */
1960 for (i = 0, l = strlen(ref->path) - 1; l >= 0; l--)
1961 if (ref->path[l] == '/') {
1962 if (i == ref->nlvl_to - 1)
1968 /* compose filename if next level down to target was found */
1969 if (i == ref->nlvl_to - 1 && src_path - src < sizeof(filename)) {
1970 memcpy(filename, src, src_path - src);
1971 filename[src_path - src] = 0;
1973 for (i = 1; i < ref->nlvl_from; i++)
1974 av_strlcat(filename, "../", 1024);
1976 av_strlcat(filename, ref->path + l + 1, 1024);
1978 if (!avio_open2(pb, filename, AVIO_FLAG_READ, int_cb, NULL))
1983 return AVERROR(ENOENT);
1986 static int mov_read_trak(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1989 MOVStreamContext *sc;
1992 st = avformat_new_stream(c->fc, NULL);
1993 if (!st) return AVERROR(ENOMEM);
1994 st->id = c->fc->nb_streams;
1995 sc = av_mallocz(sizeof(MOVStreamContext));
1996 if (!sc) return AVERROR(ENOMEM);
1999 st->codec->codec_type = AVMEDIA_TYPE_DATA;
2000 sc->ffindex = st->index;
2002 if ((ret = mov_read_default(c, pb, atom)) < 0)
2006 if (sc->chunk_count && (!sc->stts_count || !sc->stsc_count ||
2007 (!sc->sample_size && !sc->sample_count))) {
2008 av_log(c->fc, AV_LOG_ERROR, "stream %d, missing mandatory atoms, broken header\n",
2013 if (sc->time_scale <= 0) {
2014 av_log(c->fc, AV_LOG_WARNING, "stream %d, timescale not set\n", st->index);
2015 sc->time_scale = c->time_scale;
2016 if (sc->time_scale <= 0)
2020 avpriv_set_pts_info(st, 64, 1, sc->time_scale);
2022 mov_build_index(c, st);
2024 if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) {
2025 MOVDref *dref = &sc->drefs[sc->dref_id - 1];
2026 if (mov_open_dref(&sc->pb, c->fc->filename, dref, &c->fc->interrupt_callback) < 0)
2027 av_log(c->fc, AV_LOG_ERROR,
2028 "stream %d, error opening alias: path='%s', dir='%s', "
2029 "filename='%s', volume='%s', nlvl_from=%d, nlvl_to=%d\n",
2030 st->index, dref->path, dref->dir, dref->filename,
2031 dref->volume, dref->nlvl_from, dref->nlvl_to);
2035 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2036 if (!st->sample_aspect_ratio.num &&
2037 (st->codec->width != sc->width || st->codec->height != sc->height)) {
2038 st->sample_aspect_ratio = av_d2q(((double)st->codec->height * sc->width) /
2039 ((double)st->codec->width * sc->height), INT_MAX);
2042 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
2043 sc->time_scale*st->nb_frames, st->duration, INT_MAX);
2045 if (sc->stts_count == 1 || (sc->stts_count == 2 && sc->stts_data[1].count == 1))
2046 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den,
2047 sc->time_scale, sc->stts_data[0].duration, INT_MAX);
2050 switch (st->codec->codec_id) {
2051 #if CONFIG_H261_DECODER
2054 #if CONFIG_H263_DECODER
2057 #if CONFIG_H264_DECODER
2060 #if CONFIG_MPEG4_DECODER
2061 case CODEC_ID_MPEG4:
2063 st->codec->width = 0; /* let decoder init width/height */
2064 st->codec->height= 0;
2068 /* Do not need those anymore. */
2069 av_freep(&sc->chunk_offsets);
2070 av_freep(&sc->stsc_data);
2071 av_freep(&sc->sample_sizes);
2072 av_freep(&sc->keyframes);
2073 av_freep(&sc->stts_data);
2074 av_freep(&sc->stps_data);
2079 static int mov_read_ilst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2082 c->itunes_metadata = 1;
2083 ret = mov_read_default(c, pb, atom);
2084 c->itunes_metadata = 0;
2088 static int mov_read_meta(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2090 while (atom.size > 8) {
2091 uint32_t tag = avio_rl32(pb);
2093 if (tag == MKTAG('h','d','l','r')) {
2094 avio_seek(pb, -8, SEEK_CUR);
2096 return mov_read_default(c, pb, atom);
2102 static int mov_read_tkhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2107 int64_t disp_transform[2];
2108 int display_matrix[3][2];
2110 MOVStreamContext *sc;
2113 if (c->fc->nb_streams < 1)
2115 st = c->fc->streams[c->fc->nb_streams-1];
2118 version = avio_r8(pb);
2119 avio_rb24(pb); /* flags */
2121 MOV_TRACK_ENABLED 0x0001
2122 MOV_TRACK_IN_MOVIE 0x0002
2123 MOV_TRACK_IN_PREVIEW 0x0004
2124 MOV_TRACK_IN_POSTER 0x0008
2131 avio_rb32(pb); /* creation time */
2132 avio_rb32(pb); /* modification time */
2134 st->id = (int)avio_rb32(pb); /* track id (NOT 0 !)*/
2135 avio_rb32(pb); /* reserved */
2137 /* highlevel (considering edits) duration in movie timebase */
2138 (version == 1) ? avio_rb64(pb) : avio_rb32(pb);
2139 avio_rb32(pb); /* reserved */
2140 avio_rb32(pb); /* reserved */
2142 avio_rb16(pb); /* layer */
2143 avio_rb16(pb); /* alternate group */
2144 avio_rb16(pb); /* volume */
2145 avio_rb16(pb); /* reserved */
2147 //read in the display matrix (outlined in ISO 14496-12, Section 6.2.2)
2148 // they're kept in fixed point format through all calculations
2149 // ignore u,v,z b/c we don't need the scale factor to calc aspect ratio
2150 for (i = 0; i < 3; i++) {
2151 display_matrix[i][0] = avio_rb32(pb); // 16.16 fixed point
2152 display_matrix[i][1] = avio_rb32(pb); // 16.16 fixed point
2153 avio_rb32(pb); // 2.30 fixed point (not used)
2156 width = avio_rb32(pb); // 16.16 fixed point track width
2157 height = avio_rb32(pb); // 16.16 fixed point track height
2158 sc->width = width >> 16;
2159 sc->height = height >> 16;
2161 // transform the display width/height according to the matrix
2162 // skip this if the display matrix is the default identity matrix
2163 // or if it is rotating the picture, ex iPhone 3GS
2164 // to keep the same scale, use [width height 1<<16]
2165 if (width && height &&
2166 ((display_matrix[0][0] != 65536 ||
2167 display_matrix[1][1] != 65536) &&
2168 !display_matrix[0][1] &&
2169 !display_matrix[1][0] &&
2170 !display_matrix[2][0] && !display_matrix[2][1])) {
2171 for (i = 0; i < 2; i++)
2173 (int64_t) width * display_matrix[0][i] +
2174 (int64_t) height * display_matrix[1][i] +
2175 ((int64_t) display_matrix[2][i] << 16);
2177 //sample aspect ratio is new width/height divided by old width/height
2178 st->sample_aspect_ratio = av_d2q(
2179 ((double) disp_transform[0] * height) /
2180 ((double) disp_transform[1] * width), INT_MAX);
2185 static int mov_read_tfhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2187 MOVFragment *frag = &c->fragment;
2188 MOVTrackExt *trex = NULL;
2189 int flags, track_id, i;
2191 avio_r8(pb); /* version */
2192 flags = avio_rb24(pb);
2194 track_id = avio_rb32(pb);
2196 return AVERROR_INVALIDDATA;
2197 frag->track_id = track_id;
2198 for (i = 0; i < c->trex_count; i++)
2199 if (c->trex_data[i].track_id == frag->track_id) {
2200 trex = &c->trex_data[i];
2204 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding trex\n");
2205 return AVERROR_INVALIDDATA;
2208 frag->base_data_offset = flags & MOV_TFHD_BASE_DATA_OFFSET ?
2209 avio_rb64(pb) : frag->moof_offset;
2210 frag->stsd_id = flags & MOV_TFHD_STSD_ID ? avio_rb32(pb) : trex->stsd_id;
2212 frag->duration = flags & MOV_TFHD_DEFAULT_DURATION ?
2213 avio_rb32(pb) : trex->duration;
2214 frag->size = flags & MOV_TFHD_DEFAULT_SIZE ?
2215 avio_rb32(pb) : trex->size;
2216 frag->flags = flags & MOV_TFHD_DEFAULT_FLAGS ?
2217 avio_rb32(pb) : trex->flags;
2218 av_dlog(c->fc, "frag flags 0x%x\n", frag->flags);
2222 static int mov_read_chap(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2224 c->chapter_track = avio_rb32(pb);
2228 static int mov_read_trex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2232 if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data))
2233 return AVERROR_INVALIDDATA;
2234 trex = av_realloc(c->trex_data, (c->trex_count+1)*sizeof(*c->trex_data));
2236 return AVERROR(ENOMEM);
2237 c->trex_data = trex;
2238 trex = &c->trex_data[c->trex_count++];
2239 avio_r8(pb); /* version */
2240 avio_rb24(pb); /* flags */
2241 trex->track_id = avio_rb32(pb);
2242 trex->stsd_id = avio_rb32(pb);
2243 trex->duration = avio_rb32(pb);
2244 trex->size = avio_rb32(pb);
2245 trex->flags = avio_rb32(pb);
2249 static int mov_read_trun(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2251 MOVFragment *frag = &c->fragment;
2252 AVStream *st = NULL;
2253 MOVStreamContext *sc;
2257 int data_offset = 0;
2258 unsigned entries, first_sample_flags = frag->flags;
2259 int flags, distance, i, found_keyframe = 0;
2261 for (i = 0; i < c->fc->nb_streams; i++) {
2262 if (c->fc->streams[i]->id == frag->track_id) {
2263 st = c->fc->streams[i];
2268 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id);
2269 return AVERROR_INVALIDDATA;
2272 if (sc->pseudo_stream_id+1 != frag->stsd_id)
2274 avio_r8(pb); /* version */
2275 flags = avio_rb24(pb);
2276 entries = avio_rb32(pb);
2277 av_dlog(c->fc, "flags 0x%x entries %d\n", flags, entries);
2279 /* Always assume the presence of composition time offsets.
2280 * Without this assumption, for instance, we cannot deal with a track in fragmented movies that meet the following.
2281 * 1) in the initial movie, there are no samples.
2282 * 2) in the first movie fragment, there is only one sample without composition time offset.
2283 * 3) in the subsequent movie fragments, there are samples with composition time offset. */
2284 if (!sc->ctts_count && sc->sample_count)
2286 /* Complement ctts table if moov atom doesn't have ctts atom. */
2287 ctts_data = av_malloc(sizeof(*sc->ctts_data));
2289 return AVERROR(ENOMEM);
2290 sc->ctts_data = ctts_data;
2291 sc->ctts_data[sc->ctts_count].count = sc->sample_count;
2292 sc->ctts_data[sc->ctts_count].duration = 0;
2295 if ((uint64_t)entries+sc->ctts_count >= UINT_MAX/sizeof(*sc->ctts_data))
2296 return AVERROR_INVALIDDATA;
2297 ctts_data = av_realloc(sc->ctts_data,
2298 (entries+sc->ctts_count)*sizeof(*sc->ctts_data));
2300 return AVERROR(ENOMEM);
2301 sc->ctts_data = ctts_data;
2303 if (flags & MOV_TRUN_DATA_OFFSET) data_offset = avio_rb32(pb);
2304 if (flags & MOV_TRUN_FIRST_SAMPLE_FLAGS) first_sample_flags = avio_rb32(pb);
2305 dts = sc->track_end - sc->time_offset;
2306 offset = frag->base_data_offset + data_offset;
2308 av_dlog(c->fc, "first sample flags 0x%x\n", first_sample_flags);
2309 for (i = 0; i < entries; i++) {
2310 unsigned sample_size = frag->size;
2311 int sample_flags = i ? frag->flags : first_sample_flags;
2312 unsigned sample_duration = frag->duration;
2315 if (flags & MOV_TRUN_SAMPLE_DURATION) sample_duration = avio_rb32(pb);
2316 if (flags & MOV_TRUN_SAMPLE_SIZE) sample_size = avio_rb32(pb);
2317 if (flags & MOV_TRUN_SAMPLE_FLAGS) sample_flags = avio_rb32(pb);
2318 sc->ctts_data[sc->ctts_count].count = 1;
2319 sc->ctts_data[sc->ctts_count].duration = (flags & MOV_TRUN_SAMPLE_CTS) ?
2322 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
2324 else if (!found_keyframe)
2325 keyframe = found_keyframe =
2326 !(sample_flags & (MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC |
2327 MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES));
2330 av_add_index_entry(st, offset, dts, sample_size, distance,
2331 keyframe ? AVINDEX_KEYFRAME : 0);
2332 av_dlog(c->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
2333 "size %d, distance %d, keyframe %d\n", st->index, sc->sample_count+i,
2334 offset, dts, sample_size, distance, keyframe);
2336 dts += sample_duration;
2337 offset += sample_size;
2338 sc->data_size += sample_size;
2340 frag->moof_offset = offset;
2341 st->duration = sc->track_end = dts + sc->time_offset;
2345 /* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
2346 /* like the files created with Adobe Premiere 5.0, for samples see */
2347 /* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
2348 static int mov_read_wide(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2353 return 0; /* continue */
2354 if (avio_rb32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
2355 avio_skip(pb, atom.size - 4);
2358 atom.type = avio_rl32(pb);
2360 if (atom.type != MKTAG('m','d','a','t')) {
2361 avio_skip(pb, atom.size);
2364 err = mov_read_mdat(c, pb, atom);
2368 static int mov_read_cmov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2373 uint8_t *moov_data; /* uncompressed data */
2374 long cmov_len, moov_len;
2377 avio_rb32(pb); /* dcom atom */
2378 if (avio_rl32(pb) != MKTAG('d','c','o','m'))
2379 return AVERROR_INVALIDDATA;
2380 if (avio_rl32(pb) != MKTAG('z','l','i','b')) {
2381 av_log(c->fc, AV_LOG_ERROR, "unknown compression for cmov atom !");
2382 return AVERROR_INVALIDDATA;
2384 avio_rb32(pb); /* cmvd atom */
2385 if (avio_rl32(pb) != MKTAG('c','m','v','d'))
2386 return AVERROR_INVALIDDATA;
2387 moov_len = avio_rb32(pb); /* uncompressed size */
2388 cmov_len = atom.size - 6 * 4;
2390 cmov_data = av_malloc(cmov_len);
2392 return AVERROR(ENOMEM);
2393 moov_data = av_malloc(moov_len);
2396 return AVERROR(ENOMEM);
2398 avio_read(pb, cmov_data, cmov_len);
2399 if (uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
2400 goto free_and_return;
2401 if (ffio_init_context(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
2402 goto free_and_return;
2403 atom.type = MKTAG('m','o','o','v');
2404 atom.size = moov_len;
2405 ret = mov_read_default(c, &ctx, atom);
2411 av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
2412 return AVERROR(ENOSYS);
2416 /* edit list atom */
2417 static int mov_read_elst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2419 MOVStreamContext *sc;
2420 int i, edit_count, version;
2422 if (c->fc->nb_streams < 1)
2424 sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
2426 version = avio_r8(pb); /* version */
2427 avio_rb24(pb); /* flags */
2428 edit_count = avio_rb32(pb); /* entries */
2430 if ((uint64_t)edit_count*12+8 > atom.size)
2431 return AVERROR_INVALIDDATA;
2433 for (i=0; i<edit_count; i++){
2437 duration = avio_rb64(pb);
2438 time = avio_rb64(pb);
2440 duration = avio_rb32(pb); /* segment duration */
2441 time = (int32_t)avio_rb32(pb); /* media time */
2443 avio_rb32(pb); /* Media rate */
2444 if (i == 0 && time >= -1) {
2445 sc->time_offset = time != -1 ? time : -duration;
2450 av_log(c->fc, AV_LOG_WARNING, "multiple edit list entries, "
2451 "a/v desync might occur, patch welcome\n");
2453 av_dlog(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, edit_count);
2457 static const MOVParseTableEntry mov_default_parse_table[] = {
2458 { MKTAG('a','v','s','s'), mov_read_extradata },
2459 { MKTAG('c','h','p','l'), mov_read_chpl },
2460 { MKTAG('c','o','6','4'), mov_read_stco },
2461 { MKTAG('c','t','t','s'), mov_read_ctts }, /* composition time to sample */
2462 { MKTAG('d','i','n','f'), mov_read_default },
2463 { MKTAG('d','r','e','f'), mov_read_dref },
2464 { MKTAG('e','d','t','s'), mov_read_default },
2465 { MKTAG('e','l','s','t'), mov_read_elst },
2466 { MKTAG('e','n','d','a'), mov_read_enda },
2467 { MKTAG('f','i','e','l'), mov_read_fiel },
2468 { MKTAG('f','t','y','p'), mov_read_ftyp },
2469 { MKTAG('g','l','b','l'), mov_read_glbl },
2470 { MKTAG('h','d','l','r'), mov_read_hdlr },
2471 { MKTAG('i','l','s','t'), mov_read_ilst },
2472 { MKTAG('j','p','2','h'), mov_read_extradata },
2473 { MKTAG('m','d','a','t'), mov_read_mdat },
2474 { MKTAG('m','d','h','d'), mov_read_mdhd },
2475 { MKTAG('m','d','i','a'), mov_read_default },
2476 { MKTAG('m','e','t','a'), mov_read_meta },
2477 { MKTAG('m','i','n','f'), mov_read_default },
2478 { MKTAG('m','o','o','f'), mov_read_moof },
2479 { MKTAG('m','o','o','v'), mov_read_moov },
2480 { MKTAG('m','v','e','x'), mov_read_default },
2481 { MKTAG('m','v','h','d'), mov_read_mvhd },
2482 { MKTAG('S','M','I',' '), mov_read_smi }, /* Sorenson extension ??? */
2483 { MKTAG('a','l','a','c'), mov_read_extradata }, /* alac specific atom */
2484 { MKTAG('a','v','c','C'), mov_read_glbl },
2485 { MKTAG('p','a','s','p'), mov_read_pasp },
2486 { MKTAG('s','t','b','l'), mov_read_default },
2487 { MKTAG('s','t','c','o'), mov_read_stco },
2488 { MKTAG('s','t','p','s'), mov_read_stps },
2489 { MKTAG('s','t','r','f'), mov_read_strf },
2490 { MKTAG('s','t','s','c'), mov_read_stsc },
2491 { MKTAG('s','t','s','d'), mov_read_stsd }, /* sample description */
2492 { MKTAG('s','t','s','s'), mov_read_stss }, /* sync sample */
2493 { MKTAG('s','t','s','z'), mov_read_stsz }, /* sample size */
2494 { MKTAG('s','t','t','s'), mov_read_stts },
2495 { MKTAG('s','t','z','2'), mov_read_stsz }, /* compact sample size */
2496 { MKTAG('t','k','h','d'), mov_read_tkhd }, /* track header */
2497 { MKTAG('t','f','h','d'), mov_read_tfhd }, /* track fragment header */
2498 { MKTAG('t','r','a','k'), mov_read_trak },
2499 { MKTAG('t','r','a','f'), mov_read_default },
2500 { MKTAG('t','r','e','f'), mov_read_default },
2501 { MKTAG('c','h','a','p'), mov_read_chap },
2502 { MKTAG('t','r','e','x'), mov_read_trex },
2503 { MKTAG('t','r','u','n'), mov_read_trun },
2504 { MKTAG('u','d','t','a'), mov_read_default },
2505 { MKTAG('w','a','v','e'), mov_read_wave },
2506 { MKTAG('e','s','d','s'), mov_read_esds },
2507 { MKTAG('d','a','c','3'), mov_read_dac3 }, /* AC-3 info */
2508 { MKTAG('d','e','c','3'), mov_read_dec3 }, /* EAC-3 info */
2509 { MKTAG('w','i','d','e'), mov_read_wide }, /* place holder */
2510 { MKTAG('w','f','e','x'), mov_read_wfex },
2511 { MKTAG('c','m','o','v'), mov_read_cmov },
2512 { MKTAG('c','h','a','n'), mov_read_chan }, /* channel layout */
2513 { MKTAG('d','v','c','1'), mov_read_dvc1 },
2517 static int mov_probe(AVProbeData *p)
2519 unsigned int offset;
2523 /* check file header */
2526 /* ignore invalid offset */
2527 if ((offset + 8) > (unsigned int)p->buf_size)
2529 tag = AV_RL32(p->buf + offset + 4);
2531 /* check for obvious tags */
2532 case MKTAG('j','P',' ',' '): /* jpeg 2000 signature */
2533 case MKTAG('m','o','o','v'):
2534 case MKTAG('m','d','a','t'):
2535 case MKTAG('p','n','o','t'): /* detect movs with preview pics like ew.mov and april.mov */
2536 case MKTAG('u','d','t','a'): /* Packet Video PVAuthor adds this and a lot of more junk */
2537 case MKTAG('f','t','y','p'):
2538 return AVPROBE_SCORE_MAX;
2539 /* those are more common words, so rate then a bit less */
2540 case MKTAG('e','d','i','w'): /* xdcam files have reverted first tags */
2541 case MKTAG('w','i','d','e'):
2542 case MKTAG('f','r','e','e'):
2543 case MKTAG('j','u','n','k'):
2544 case MKTAG('p','i','c','t'):
2545 return AVPROBE_SCORE_MAX - 5;
2546 case MKTAG(0x82,0x82,0x7f,0x7d):
2547 case MKTAG('s','k','i','p'):
2548 case MKTAG('u','u','i','d'):
2549 case MKTAG('p','r','f','l'):
2550 offset = AV_RB32(p->buf+offset) + offset;
2551 /* if we only find those cause probedata is too small at least rate them */
2552 score = AVPROBE_SCORE_MAX - 50;
2555 /* unrecognized tag */
2561 // must be done after parsing all trak because there's no order requirement
2562 static void mov_read_chapters(AVFormatContext *s)
2564 MOVContext *mov = s->priv_data;
2565 AVStream *st = NULL;
2566 MOVStreamContext *sc;
2570 for (i = 0; i < s->nb_streams; i++)
2571 if (s->streams[i]->id == mov->chapter_track) {
2576 av_log(s, AV_LOG_ERROR, "Referenced QT chapter track not found\n");
2580 st->discard = AVDISCARD_ALL;
2582 cur_pos = avio_tell(sc->pb);
2584 for (i = 0; i < st->nb_index_entries; i++) {
2585 AVIndexEntry *sample = &st->index_entries[i];
2586 int64_t end = i+1 < st->nb_index_entries ? st->index_entries[i+1].timestamp : st->duration;
2591 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
2592 av_log(s, AV_LOG_ERROR, "Chapter %d not found in file\n", i);
2596 // the first two bytes are the length of the title
2597 len = avio_rb16(sc->pb);
2598 if (len > sample->size-2)
2600 title_len = 2*len + 1;
2601 if (!(title = av_mallocz(title_len)))
2604 // The samples could theoretically be in any encoding if there's an encd
2605 // atom following, but in practice are only utf-8 or utf-16, distinguished
2606 // instead by the presence of a BOM
2610 ch = avio_rb16(sc->pb);
2612 avio_get_str16be(sc->pb, len, title, title_len);
2613 else if (ch == 0xfffe)
2614 avio_get_str16le(sc->pb, len, title, title_len);
2617 if (len == 1 || len == 2)
2620 avio_get_str(sc->pb, len - 2, title + 2, title_len - 2);
2624 avpriv_new_chapter(s, i, st->time_base, sample->timestamp, end, title);
2628 avio_seek(sc->pb, cur_pos, SEEK_SET);
2631 static int mov_read_close(AVFormatContext *s)
2633 MOVContext *mov = s->priv_data;
2636 for (i = 0; i < s->nb_streams; i++) {
2637 AVStream *st = s->streams[i];
2638 MOVStreamContext *sc = st->priv_data;
2640 av_freep(&sc->ctts_data);
2641 for (j = 0; j < sc->drefs_count; j++) {
2642 av_freep(&sc->drefs[j].path);
2643 av_freep(&sc->drefs[j].dir);
2645 av_freep(&sc->drefs);
2646 if (sc->pb && sc->pb != s->pb)
2650 if (mov->dv_demux) {
2651 for (i = 0; i < mov->dv_fctx->nb_streams; i++) {
2652 av_freep(&mov->dv_fctx->streams[i]->codec);
2653 av_freep(&mov->dv_fctx->streams[i]);
2655 av_freep(&mov->dv_fctx);
2656 av_freep(&mov->dv_demux);
2659 av_freep(&mov->trex_data);
2664 static int mov_read_header(AVFormatContext *s)
2666 MOVContext *mov = s->priv_data;
2667 AVIOContext *pb = s->pb;
2669 MOVAtom atom = { AV_RL32("root") };
2672 /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
2674 atom.size = avio_size(pb);
2676 atom.size = INT64_MAX;
2678 /* check MOV header */
2679 if ((err = mov_read_default(mov, pb, atom)) < 0) {
2680 av_log(s, AV_LOG_ERROR, "error reading header: %d\n", err);
2684 if (!mov->found_moov) {
2685 av_log(s, AV_LOG_ERROR, "moov atom not found\n");
2687 return AVERROR_INVALIDDATA;
2689 av_dlog(mov->fc, "on_parse_exit_offset=%"PRId64"\n", avio_tell(pb));
2691 if (pb->seekable && mov->chapter_track > 0)
2692 mov_read_chapters(s);
2694 if (mov->trex_data) {
2696 for (i = 0; i < s->nb_streams; i++) {
2697 AVStream *st = s->streams[i];
2698 MOVStreamContext *sc = st->priv_data;
2700 st->codec->bit_rate = sc->data_size * 8 * sc->time_scale / st->duration;
2707 static AVIndexEntry *mov_find_next_sample(AVFormatContext *s, AVStream **st)
2709 AVIndexEntry *sample = NULL;
2710 int64_t best_dts = INT64_MAX;
2712 for (i = 0; i < s->nb_streams; i++) {
2713 AVStream *avst = s->streams[i];
2714 MOVStreamContext *msc = avst->priv_data;
2715 if (msc->pb && msc->current_sample < avst->nb_index_entries) {
2716 AVIndexEntry *current_sample = &avst->index_entries[msc->current_sample];
2717 int64_t dts = av_rescale(current_sample->timestamp, AV_TIME_BASE, msc->time_scale);
2718 av_dlog(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
2719 if (!sample || (!s->pb->seekable && current_sample->pos < sample->pos) ||
2721 ((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb &&
2722 ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
2723 (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) {
2724 sample = current_sample;
2733 static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
2735 MOVContext *mov = s->priv_data;
2736 MOVStreamContext *sc;
2737 AVIndexEntry *sample;
2738 AVStream *st = NULL;
2741 sample = mov_find_next_sample(s, &st);
2743 mov->found_mdat = 0;
2744 if (!mov->next_root_atom)
2746 avio_seek(s->pb, mov->next_root_atom, SEEK_SET);
2747 mov->next_root_atom = 0;
2748 if (mov_read_default(mov, s->pb, (MOVAtom){ AV_RL32("root"), INT64_MAX }) < 0 ||
2751 av_dlog(s, "read fragments, offset 0x%"PRIx64"\n", avio_tell(s->pb));
2755 /* must be done just before reading, to avoid infinite loop on sample */
2756 sc->current_sample++;
2758 if (st->discard != AVDISCARD_ALL) {
2759 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
2760 av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
2761 sc->ffindex, sample->pos);
2762 return AVERROR_INVALIDDATA;
2764 ret = av_get_packet(sc->pb, pkt, sample->size);
2767 if (sc->has_palette) {
2770 pal = av_packet_new_side_data(pkt, AV_PKT_DATA_PALETTE, AVPALETTE_SIZE);
2772 av_log(mov->fc, AV_LOG_ERROR, "Cannot append palette to packet\n");
2774 memcpy(pal, sc->palette, AVPALETTE_SIZE);
2775 sc->has_palette = 0;
2778 #if CONFIG_DV_DEMUXER
2779 if (mov->dv_demux && sc->dv_audio_container) {
2780 avpriv_dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size);
2783 ret = avpriv_dv_get_packet(mov->dv_demux, pkt);
2790 pkt->stream_index = sc->ffindex;
2791 pkt->dts = sample->timestamp;
2792 if (sc->ctts_data && sc->ctts_index < sc->ctts_count) {
2793 pkt->pts = pkt->dts + sc->dts_shift + sc->ctts_data[sc->ctts_index].duration;
2794 /* update ctts context */
2796 if (sc->ctts_index < sc->ctts_count &&
2797 sc->ctts_data[sc->ctts_index].count == sc->ctts_sample) {
2799 sc->ctts_sample = 0;
2802 pkt->dts = AV_NOPTS_VALUE;
2804 int64_t next_dts = (sc->current_sample < st->nb_index_entries) ?
2805 st->index_entries[sc->current_sample].timestamp : st->duration;
2806 pkt->duration = next_dts - pkt->dts;
2807 pkt->pts = pkt->dts;
2809 if (st->discard == AVDISCARD_ALL)
2811 pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? AV_PKT_FLAG_KEY : 0;
2812 pkt->pos = sample->pos;
2813 av_dlog(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n",
2814 pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
2818 static int mov_seek_stream(AVFormatContext *s, AVStream *st, int64_t timestamp, int flags)
2820 MOVStreamContext *sc = st->priv_data;
2821 int sample, time_sample;
2824 sample = av_index_search_timestamp(st, timestamp, flags);
2825 av_dlog(s, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
2826 if (sample < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
2828 if (sample < 0) /* not sure what to do */
2829 return AVERROR_INVALIDDATA;
2830 sc->current_sample = sample;
2831 av_dlog(s, "stream %d, found sample %d\n", st->index, sc->current_sample);
2832 /* adjust ctts index */
2833 if (sc->ctts_data) {
2835 for (i = 0; i < sc->ctts_count; i++) {
2836 int next = time_sample + sc->ctts_data[i].count;
2837 if (next > sc->current_sample) {
2839 sc->ctts_sample = sc->current_sample - time_sample;
2848 static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
2851 int64_t seek_timestamp, timestamp;
2855 if (stream_index >= s->nb_streams)
2856 return AVERROR_INVALIDDATA;
2857 if (sample_time < 0)
2860 st = s->streams[stream_index];
2861 sample = mov_seek_stream(s, st, sample_time, flags);
2865 /* adjust seek timestamp to found sample timestamp */
2866 seek_timestamp = st->index_entries[sample].timestamp;
2868 for (i = 0; i < s->nb_streams; i++) {
2870 if (stream_index == i)
2873 timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
2874 mov_seek_stream(s, st, timestamp, flags);
2879 AVInputFormat ff_mov_demuxer = {
2880 .name = "mov,mp4,m4a,3gp,3g2,mj2",
2881 .long_name = NULL_IF_CONFIG_SMALL("QuickTime/MPEG-4/Motion JPEG 2000 format"),
2882 .priv_data_size = sizeof(MOVContext),
2883 .read_probe = mov_probe,
2884 .read_header = mov_read_header,
2885 .read_packet = mov_read_packet,
2886 .read_close = mov_read_close,
2887 .read_seek = mov_read_seek,