3 * Copyright (c) 2001 Fabrice Bellard
4 * Copyright (c) 2009 Baptiste Coudurier <baptiste dot coudurier at gmail dot com>
6 * This file is part of FFmpeg.
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
26 //#define MOV_EXPORT_ALL_METADATA
28 #include "libavutil/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 "libavutil/opt.h"
36 #include "libavutil/timecode.h"
37 #include "libavcodec/ac3tab.h"
40 #include "avio_internal.h"
43 #include "libavcodec/get_bits.h"
52 * First version by Francois Revol revol@free.fr
53 * Seek function by Gael Chardon gael.dev@4now.net
56 #include "qtpalette.h"
62 /* those functions parse an atom */
63 /* links atom IDs to parse functions */
64 typedef struct MOVParseTableEntry {
66 int (*parse)(MOVContext *ctx, AVIOContext *pb, MOVAtom atom);
69 static const MOVParseTableEntry mov_default_parse_table[];
71 static int mov_metadata_track_or_disc_number(MOVContext *c, AVIOContext *pb,
72 unsigned len, const char *key)
76 short current, total = 0;
77 avio_rb16(pb); // unknown
78 current = avio_rb16(pb);
80 total = avio_rb16(pb);
82 snprintf(buf, sizeof(buf), "%d", current);
84 snprintf(buf, sizeof(buf), "%d/%d", current, total);
85 av_dict_set(&c->fc->metadata, key, buf, 0);
90 static int mov_metadata_int8_bypass_padding(MOVContext *c, AVIOContext *pb,
91 unsigned len, const char *key)
95 /* bypass padding bytes */
100 snprintf(buf, sizeof(buf), "%d", avio_r8(pb));
101 av_dict_set(&c->fc->metadata, key, buf, 0);
106 static int mov_metadata_int8_no_padding(MOVContext *c, AVIOContext *pb,
107 unsigned len, const char *key)
111 snprintf(buf, sizeof(buf), "%d", avio_r8(pb));
112 av_dict_set(&c->fc->metadata, key, buf, 0);
117 static int mov_metadata_gnre(MOVContext *c, AVIOContext *pb,
118 unsigned len, const char *key)
123 avio_r8(pb); // unknown
126 if (genre < 1 || genre > ID3v1_GENRE_MAX)
128 snprintf(buf, sizeof(buf), "%s", ff_id3v1_genre_str[genre-1]);
129 av_dict_set(&c->fc->metadata, key, buf, 0);
134 static const uint32_t mac_to_unicode[128] = {
135 0x00C4,0x00C5,0x00C7,0x00C9,0x00D1,0x00D6,0x00DC,0x00E1,
136 0x00E0,0x00E2,0x00E4,0x00E3,0x00E5,0x00E7,0x00E9,0x00E8,
137 0x00EA,0x00EB,0x00ED,0x00EC,0x00EE,0x00EF,0x00F1,0x00F3,
138 0x00F2,0x00F4,0x00F6,0x00F5,0x00FA,0x00F9,0x00FB,0x00FC,
139 0x2020,0x00B0,0x00A2,0x00A3,0x00A7,0x2022,0x00B6,0x00DF,
140 0x00AE,0x00A9,0x2122,0x00B4,0x00A8,0x2260,0x00C6,0x00D8,
141 0x221E,0x00B1,0x2264,0x2265,0x00A5,0x00B5,0x2202,0x2211,
142 0x220F,0x03C0,0x222B,0x00AA,0x00BA,0x03A9,0x00E6,0x00F8,
143 0x00BF,0x00A1,0x00AC,0x221A,0x0192,0x2248,0x2206,0x00AB,
144 0x00BB,0x2026,0x00A0,0x00C0,0x00C3,0x00D5,0x0152,0x0153,
145 0x2013,0x2014,0x201C,0x201D,0x2018,0x2019,0x00F7,0x25CA,
146 0x00FF,0x0178,0x2044,0x20AC,0x2039,0x203A,0xFB01,0xFB02,
147 0x2021,0x00B7,0x201A,0x201E,0x2030,0x00C2,0x00CA,0x00C1,
148 0x00CB,0x00C8,0x00CD,0x00CE,0x00CF,0x00CC,0x00D3,0x00D4,
149 0xF8FF,0x00D2,0x00DA,0x00DB,0x00D9,0x0131,0x02C6,0x02DC,
150 0x00AF,0x02D8,0x02D9,0x02DA,0x00B8,0x02DD,0x02DB,0x02C7,
153 static int mov_read_mac_string(MOVContext *c, AVIOContext *pb, int len,
154 char *dst, int dstlen)
157 char *end = dst+dstlen-1;
160 for (i = 0; i < len; i++) {
161 uint8_t t, c = avio_r8(pb);
162 if (c < 0x80 && p < end)
165 PUT_UTF8(mac_to_unicode[c-0x80], t, if (p < end) *p++ = t;);
171 static int mov_read_covr(MOVContext *c, AVIOContext *pb, int type, int len)
175 MOVStreamContext *sc;
180 case 0xd: id = CODEC_ID_MJPEG; break;
181 case 0xe: id = CODEC_ID_PNG; break;
182 case 0x1b: id = CODEC_ID_BMP; break;
184 av_log(c->fc, AV_LOG_WARNING, "Unknown cover type: 0x%x.\n", type);
189 st = avformat_new_stream(c->fc, NULL);
191 return AVERROR(ENOMEM);
192 sc = av_mallocz(sizeof(*sc));
194 return AVERROR(ENOMEM);
197 ret = av_get_packet(pb, &pkt, len);
201 st->disposition |= AV_DISPOSITION_ATTACHED_PIC;
203 st->attached_pic = pkt;
204 st->attached_pic.stream_index = st->index;
205 st->attached_pic.flags |= AV_PKT_FLAG_KEY;
207 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
208 st->codec->codec_id = id;
213 static int mov_read_udta_string(MOVContext *c, AVIOContext *pb, MOVAtom atom)
215 #ifdef MOV_EXPORT_ALL_METADATA
218 char str[1024], key2[16], language[4] = {0};
219 const char *key = NULL;
220 uint16_t langcode = 0;
221 uint32_t data_type = 0, str_size;
222 int (*parse)(MOVContext*, AVIOContext*, unsigned, const char*) = NULL;
225 case MKTAG(0xa9,'n','a','m'): key = "title"; break;
226 case MKTAG(0xa9,'a','u','t'):
227 case MKTAG(0xa9,'A','R','T'): key = "artist"; break;
228 case MKTAG( 'a','A','R','T'): key = "album_artist"; break;
229 case MKTAG(0xa9,'w','r','t'): key = "composer"; break;
230 case MKTAG( 'c','p','r','t'):
231 case MKTAG(0xa9,'c','p','y'): key = "copyright"; break;
232 case MKTAG(0xa9,'g','r','p'): key = "grouping"; break;
233 case MKTAG(0xa9,'l','y','r'): key = "lyrics"; break;
234 case MKTAG(0xa9,'c','m','t'):
235 case MKTAG(0xa9,'i','n','f'): key = "comment"; break;
236 case MKTAG(0xa9,'a','l','b'): key = "album"; break;
237 case MKTAG(0xa9,'d','a','y'): key = "date"; break;
238 case MKTAG(0xa9,'g','e','n'): key = "genre"; break;
239 case MKTAG( 'g','n','r','e'): key = "genre";
240 parse = mov_metadata_gnre; break;
241 case MKTAG(0xa9,'t','o','o'):
242 case MKTAG(0xa9,'s','w','r'): key = "encoder"; break;
243 case MKTAG(0xa9,'e','n','c'): key = "encoder"; break;
244 case MKTAG( 'd','e','s','c'): key = "description";break;
245 case MKTAG( 'l','d','e','s'): key = "synopsis"; break;
246 case MKTAG( 't','v','s','h'): key = "show"; break;
247 case MKTAG( 't','v','e','n'): key = "episode_id";break;
248 case MKTAG( 't','v','n','n'): key = "network"; break;
249 case MKTAG( 't','r','k','n'): key = "track";
250 parse = mov_metadata_track_or_disc_number; break;
251 case MKTAG( 'd','i','s','k'): key = "disc";
252 parse = mov_metadata_track_or_disc_number; break;
253 case MKTAG( 't','v','e','s'): key = "episode_sort";
254 parse = mov_metadata_int8_bypass_padding; break;
255 case MKTAG( 't','v','s','n'): key = "season_number";
256 parse = mov_metadata_int8_bypass_padding; break;
257 case MKTAG( 's','t','i','k'): key = "media_type";
258 parse = mov_metadata_int8_no_padding; break;
259 case MKTAG( 'h','d','v','d'): key = "hd_video";
260 parse = mov_metadata_int8_no_padding; break;
261 case MKTAG( 'p','g','a','p'): key = "gapless_playback";
262 parse = mov_metadata_int8_no_padding; break;
265 if (c->itunes_metadata && atom.size > 8) {
266 int data_size = avio_rb32(pb);
267 int tag = avio_rl32(pb);
268 if (tag == MKTAG('d','a','t','a')) {
269 data_type = avio_rb32(pb); // type
270 avio_rb32(pb); // unknown
271 str_size = data_size - 16;
274 if (atom.type == MKTAG('c', 'o', 'v', 'r')) {
275 int ret = mov_read_covr(c, pb, data_type, str_size);
277 av_log(c->fc, AV_LOG_ERROR, "Error parsing cover art.\n");
282 } else if (atom.size > 4 && key && !c->itunes_metadata) {
283 str_size = avio_rb16(pb); // string length
284 langcode = avio_rb16(pb);
285 ff_mov_lang_to_iso639(langcode, language);
288 str_size = atom.size;
290 #ifdef MOV_EXPORT_ALL_METADATA
292 snprintf(tmp_key, 5, "%.4s", (char*)&atom.type);
300 return AVERROR_INVALIDDATA;
302 str_size = FFMIN3(sizeof(str)-1, str_size, atom.size);
305 parse(c, pb, str_size, key);
307 if (data_type == 3 || (data_type == 0 && (langcode < 0x400 || langcode == 0x7fff))) { // MAC Encoded
308 mov_read_mac_string(c, pb, str_size, str, sizeof(str));
310 avio_read(pb, str, str_size);
313 av_dict_set(&c->fc->metadata, key, str, 0);
314 if (*language && strcmp(language, "und")) {
315 snprintf(key2, sizeof(key2), "%s-%s", key, language);
316 av_dict_set(&c->fc->metadata, key2, str, 0);
319 av_dlog(c->fc, "lang \"%3s\" ", language);
320 av_dlog(c->fc, "tag \"%s\" value \"%s\" atom \"%.4s\" %d %"PRId64"\n",
321 key, str, (char*)&atom.type, str_size, atom.size);
326 static int mov_read_chpl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
329 int i, nb_chapters, str_len, version;
332 if ((atom.size -= 5) < 0)
335 version = avio_r8(pb);
338 avio_rb32(pb); // ???
339 nb_chapters = avio_r8(pb);
341 for (i = 0; i < nb_chapters; i++) {
345 start = avio_rb64(pb);
346 str_len = avio_r8(pb);
348 if ((atom.size -= 9+str_len) < 0)
351 avio_read(pb, str, str_len);
353 avpriv_new_chapter(c->fc, i, (AVRational){1,10000000}, start, AV_NOPTS_VALUE, str);
358 static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom)
360 int64_t total_size = 0;
365 atom.size = INT64_MAX;
366 while (total_size + 8 <= atom.size && !url_feof(pb)) {
367 int (*parse)(MOVContext*, AVIOContext*, MOVAtom) = NULL;
370 if (atom.size >= 8) {
371 a.size = avio_rb32(pb);
372 a.type = avio_rl32(pb);
373 if (atom.type != MKTAG('r','o','o','t') &&
374 atom.type != MKTAG('m','o','o','v'))
376 if (a.type == MKTAG('t','r','a','k') || a.type == MKTAG('m','d','a','t'))
378 av_log(c->fc, AV_LOG_ERROR, "Broken file, trak/mdat not at top-level\n");
384 if (a.size == 1) { /* 64 bit extended size */
385 a.size = avio_rb64(pb) - 8;
389 av_dlog(c->fc, "type: %08x '%.4s' parent:'%.4s' sz: %"PRId64" %"PRId64" %"PRId64"\n",
390 a.type, (char*)&a.type, (char*)&atom.type, a.size, total_size, atom.size);
392 a.size = atom.size - total_size + 8;
397 a.size = FFMIN(a.size, atom.size - total_size);
399 for (i = 0; mov_default_parse_table[i].type; i++)
400 if (mov_default_parse_table[i].type == a.type) {
401 parse = mov_default_parse_table[i].parse;
405 // container is user data
406 if (!parse && (atom.type == MKTAG('u','d','t','a') ||
407 atom.type == MKTAG('i','l','s','t')))
408 parse = mov_read_udta_string;
410 if (!parse) { /* skip leaf atoms data */
411 avio_skip(pb, a.size);
413 int64_t start_pos = avio_tell(pb);
415 int err = parse(c, pb, a);
418 if (c->found_moov && c->found_mdat &&
419 ((!pb->seekable || c->fc->flags & AVFMT_FLAG_IGNIDX) ||
420 start_pos + a.size == avio_size(pb))) {
421 if (!pb->seekable || c->fc->flags & AVFMT_FLAG_IGNIDX)
422 c->next_root_atom = start_pos + a.size;
425 left = a.size - avio_tell(pb) + start_pos;
426 if (left > 0) /* skip garbage at atom end */
430 total_size += a.size;
433 if (total_size < atom.size && atom.size < 0x7ffff)
434 avio_skip(pb, atom.size - total_size);
439 static int mov_read_dref(MOVContext *c, AVIOContext *pb, MOVAtom atom)
442 MOVStreamContext *sc;
445 if (c->fc->nb_streams < 1)
447 st = c->fc->streams[c->fc->nb_streams-1];
450 avio_rb32(pb); // version + flags
451 entries = avio_rb32(pb);
452 if (entries >= UINT_MAX / sizeof(*sc->drefs))
453 return AVERROR_INVALIDDATA;
456 sc->drefs = av_mallocz(entries * sizeof(*sc->drefs));
458 return AVERROR(ENOMEM);
459 sc->drefs_count = entries;
461 for (i = 0; i < sc->drefs_count; i++) {
462 MOVDref *dref = &sc->drefs[i];
463 uint32_t size = avio_rb32(pb);
464 int64_t next = avio_tell(pb) + size - 4;
467 return AVERROR_INVALIDDATA;
469 dref->type = avio_rl32(pb);
470 avio_rb32(pb); // version + flags
471 av_dlog(c->fc, "type %.4s size %d\n", (char*)&dref->type, size);
473 if (dref->type == MKTAG('a','l','i','s') && size > 150) {
474 /* macintosh alias record */
475 uint16_t volume_len, len;
480 volume_len = avio_r8(pb);
481 volume_len = FFMIN(volume_len, 27);
482 avio_read(pb, dref->volume, 27);
483 dref->volume[volume_len] = 0;
484 av_log(c->fc, AV_LOG_DEBUG, "volume %s, len %d\n", dref->volume, volume_len);
489 len = FFMIN(len, 63);
490 avio_read(pb, dref->filename, 63);
491 dref->filename[len] = 0;
492 av_log(c->fc, AV_LOG_DEBUG, "filename %s, len %d\n", dref->filename, len);
496 /* read next level up_from_alias/down_to_target */
497 dref->nlvl_from = avio_rb16(pb);
498 dref->nlvl_to = avio_rb16(pb);
499 av_log(c->fc, AV_LOG_DEBUG, "nlvl from %d, nlvl to %d\n",
500 dref->nlvl_from, dref->nlvl_to);
504 for (type = 0; type != -1 && avio_tell(pb) < next; ) {
507 type = avio_rb16(pb);
509 av_log(c->fc, AV_LOG_DEBUG, "type %d, len %d\n", type, len);
512 if (type == 2) { // absolute path
514 dref->path = av_mallocz(len+1);
516 return AVERROR(ENOMEM);
517 avio_read(pb, dref->path, len);
518 if (len > volume_len && !strncmp(dref->path, dref->volume, volume_len)) {
520 memmove(dref->path, dref->path+volume_len, len);
523 for (j = 0; j < len; j++)
524 if (dref->path[j] == ':')
526 av_log(c->fc, AV_LOG_DEBUG, "path %s\n", dref->path);
527 } else if (type == 0) { // directory name
529 dref->dir = av_malloc(len+1);
531 return AVERROR(ENOMEM);
532 avio_read(pb, dref->dir, len);
534 for (j = 0; j < len; j++)
535 if (dref->dir[j] == ':')
537 av_log(c->fc, AV_LOG_DEBUG, "dir %s\n", dref->dir);
542 avio_seek(pb, next, SEEK_SET);
547 static int mov_read_hdlr(MOVContext *c, AVIOContext *pb, MOVAtom atom)
551 uint32_t av_unused ctype;
555 if (c->fc->nb_streams < 1) // meta before first trak
558 st = c->fc->streams[c->fc->nb_streams-1];
560 avio_r8(pb); /* version */
561 avio_rb24(pb); /* flags */
564 ctype = avio_rl32(pb);
565 type = avio_rl32(pb); /* component subtype */
567 av_dlog(c->fc, "ctype= %.4s (0x%08x)\n", (char*)&ctype, ctype);
568 av_dlog(c->fc, "stype= %.4s\n", (char*)&type);
570 if (type == MKTAG('v','i','d','e'))
571 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
572 else if (type == MKTAG('s','o','u','n'))
573 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
574 else if (type == MKTAG('m','1','a',' '))
575 st->codec->codec_id = CODEC_ID_MP2;
576 else if ((type == MKTAG('s','u','b','p')) || (type == MKTAG('c','l','c','p')))
577 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
579 avio_rb32(pb); /* component manufacture */
580 avio_rb32(pb); /* component flags */
581 avio_rb32(pb); /* component flags mask */
583 title_size = atom.size - 24;
584 if (title_size > 0) {
585 title_str = av_malloc(title_size + 1); /* Add null terminator */
587 return AVERROR(ENOMEM);
588 avio_read(pb, title_str, title_size);
589 title_str[title_size] = 0;
591 av_dict_set(&st->metadata, "handler_name", title_str +
592 (!c->isom && title_str[0] == title_size - 1), 0);
593 av_freep(&title_str);
599 int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb, MOVAtom atom)
604 if (fc->nb_streams < 1)
606 st = fc->streams[fc->nb_streams-1];
608 avio_rb32(pb); /* version + flags */
609 ff_mp4_read_descr(fc, pb, &tag);
610 if (tag == MP4ESDescrTag) {
611 ff_mp4_parse_es_descr(pb, NULL);
613 avio_rb16(pb); /* ID */
615 ff_mp4_read_descr(fc, pb, &tag);
616 if (tag == MP4DecConfigDescrTag)
617 ff_mp4_read_dec_config_descr(fc, st, pb);
621 static int mov_read_esds(MOVContext *c, AVIOContext *pb, MOVAtom atom)
623 return ff_mov_read_esds(c->fc, pb, atom);
626 static int mov_read_dac3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
629 int ac3info, acmod, lfeon, bsmod;
631 if (c->fc->nb_streams < 1)
633 st = c->fc->streams[c->fc->nb_streams-1];
635 ac3info = avio_rb24(pb);
636 bsmod = (ac3info >> 14) & 0x7;
637 acmod = (ac3info >> 11) & 0x7;
638 lfeon = (ac3info >> 10) & 0x1;
639 st->codec->channels = ((int[]){2,1,2,3,3,4,4,5})[acmod] + lfeon;
640 st->codec->channel_layout = avpriv_ac3_channel_layout_tab[acmod];
642 st->codec->channel_layout |= AV_CH_LOW_FREQUENCY;
643 st->codec->audio_service_type = bsmod;
644 if (st->codec->channels > 1 && bsmod == 0x7)
645 st->codec->audio_service_type = AV_AUDIO_SERVICE_TYPE_KARAOKE;
650 static int mov_read_dec3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
653 int eac3info, acmod, lfeon, bsmod;
655 if (c->fc->nb_streams < 1)
657 st = c->fc->streams[c->fc->nb_streams-1];
659 /* No need to parse fields for additional independent substreams and its
660 * associated dependent substreams since libavcodec's E-AC-3 decoder
661 * does not support them yet. */
662 avio_rb16(pb); /* data_rate and num_ind_sub */
663 eac3info = avio_rb24(pb);
664 bsmod = (eac3info >> 12) & 0x1f;
665 acmod = (eac3info >> 9) & 0x7;
666 lfeon = (eac3info >> 8) & 0x1;
667 st->codec->channel_layout = avpriv_ac3_channel_layout_tab[acmod];
669 st->codec->channel_layout |= AV_CH_LOW_FREQUENCY;
670 st->codec->channels = av_get_channel_layout_nb_channels(st->codec->channel_layout);
671 st->codec->audio_service_type = bsmod;
672 if (st->codec->channels > 1 && bsmod == 0x7)
673 st->codec->audio_service_type = AV_AUDIO_SERVICE_TYPE_KARAOKE;
678 static int mov_read_chan(MOVContext *c, AVIOContext *pb, MOVAtom atom)
681 uint8_t av_unused version;
682 uint32_t av_unused flags;
683 uint32_t layout_tag, bitmap, num_descr, label_mask;
686 if (c->fc->nb_streams < 1)
688 st = c->fc->streams[c->fc->nb_streams-1];
693 version = avio_r8(pb);
694 flags = avio_rb24(pb);
696 layout_tag = avio_rb32(pb);
697 bitmap = avio_rb32(pb);
698 num_descr = avio_rb32(pb);
700 if (atom.size < 16ULL + num_descr * 20ULL)
703 av_dlog(c->fc, "chan: size=%" PRId64 " version=%u flags=%u layout=%u bitmap=%u num_descr=%u\n",
704 atom.size, version, flags, layout_tag, bitmap, num_descr);
707 for (i = 0; i < num_descr; i++) {
709 label = avio_rb32(pb); // mChannelLabel
710 avio_rb32(pb); // mChannelFlags
711 avio_rl32(pb); // mCoordinates[0]
712 avio_rl32(pb); // mCoordinates[1]
713 avio_rl32(pb); // mCoordinates[2]
714 if (layout_tag == 0) {
715 uint32_t mask_incr = ff_mov_get_channel_label(label);
716 if (mask_incr == 0) {
720 label_mask |= mask_incr;
724 st->codec->channel_layout = label_mask;
726 st->codec->channel_layout = ff_mov_get_channel_layout(layout_tag, bitmap);
731 static int mov_read_wfex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
735 if (c->fc->nb_streams < 1)
737 st = c->fc->streams[c->fc->nb_streams-1];
739 ff_get_wav_header(pb, st->codec, atom.size);
744 static int mov_read_pasp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
746 const int num = avio_rb32(pb);
747 const int den = avio_rb32(pb);
750 if (c->fc->nb_streams < 1)
752 st = c->fc->streams[c->fc->nb_streams-1];
754 if ((st->sample_aspect_ratio.den != 1 || st->sample_aspect_ratio.num) && // default
755 (den != st->sample_aspect_ratio.den || num != st->sample_aspect_ratio.num)) {
756 av_log(c->fc, AV_LOG_WARNING,
757 "sample aspect ratio already set to %d:%d, ignoring 'pasp' atom (%d:%d)\n",
758 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
760 } else if (den != 0) {
761 st->sample_aspect_ratio.num = num;
762 st->sample_aspect_ratio.den = den;
767 /* this atom contains actual media data */
768 static int mov_read_mdat(MOVContext *c, AVIOContext *pb, MOVAtom atom)
770 if (atom.size == 0) /* wrong one (MP4) */
773 return 0; /* now go for moov */
776 /* read major brand, minor version and compatible brands and store them as metadata */
777 static int mov_read_ftyp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
781 char minor_ver_str[11]; /* 32 bit integer -> 10 digits + null */
782 char* comp_brands_str;
783 uint8_t type[5] = {0};
785 avio_read(pb, type, 4);
786 if (strcmp(type, "qt "))
788 av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
789 av_dict_set(&c->fc->metadata, "major_brand", type, 0);
790 minor_ver = avio_rb32(pb); /* minor version */
791 snprintf(minor_ver_str, sizeof(minor_ver_str), "%d", minor_ver);
792 av_dict_set(&c->fc->metadata, "minor_version", minor_ver_str, 0);
794 comp_brand_size = atom.size - 8;
795 if (comp_brand_size < 0)
796 return AVERROR_INVALIDDATA;
797 comp_brands_str = av_malloc(comp_brand_size + 1); /* Add null terminator */
798 if (!comp_brands_str)
799 return AVERROR(ENOMEM);
800 avio_read(pb, comp_brands_str, comp_brand_size);
801 comp_brands_str[comp_brand_size] = 0;
802 av_dict_set(&c->fc->metadata, "compatible_brands", comp_brands_str, 0);
803 av_freep(&comp_brands_str);
808 /* this atom should contain all header atoms */
809 static int mov_read_moov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
813 if ((ret = mov_read_default(c, pb, atom)) < 0)
815 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
816 /* so we don't parse the whole file if over a network */
818 return 0; /* now go for mdat */
821 static int mov_read_moof(MOVContext *c, AVIOContext *pb, MOVAtom atom)
823 c->fragment.moof_offset = avio_tell(pb) - 8;
824 av_dlog(c->fc, "moof offset %"PRIx64"\n", c->fragment.moof_offset);
825 return mov_read_default(c, pb, atom);
828 static void mov_metadata_creation_time(AVDictionary **metadata, time_t time)
833 if(time >= 2082844800)
834 time -= 2082844800; /* seconds between 1904-01-01 and Epoch */
837 strftime(buffer, sizeof(buffer), "%Y-%m-%d %H:%M:%S", ptm);
838 av_dict_set(metadata, "creation_time", buffer, 0);
842 static int mov_read_mdhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
845 MOVStreamContext *sc;
847 char language[4] = {0};
849 time_t creation_time;
851 if (c->fc->nb_streams < 1)
853 st = c->fc->streams[c->fc->nb_streams-1];
856 version = avio_r8(pb);
858 av_log_ask_for_sample(c, "unsupported version %d\n", version);
859 return AVERROR_PATCHWELCOME;
861 avio_rb24(pb); /* flags */
863 creation_time = avio_rb64(pb);
866 creation_time = avio_rb32(pb);
867 avio_rb32(pb); /* modification time */
869 mov_metadata_creation_time(&st->metadata, creation_time);
871 sc->time_scale = avio_rb32(pb);
872 st->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
874 lang = avio_rb16(pb); /* language */
875 if (ff_mov_lang_to_iso639(lang, language))
876 av_dict_set(&st->metadata, "language", language, 0);
877 avio_rb16(pb); /* quality */
882 static int mov_read_mvhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
884 time_t creation_time;
885 int version = avio_r8(pb); /* version */
886 avio_rb24(pb); /* flags */
889 creation_time = avio_rb64(pb);
892 creation_time = avio_rb32(pb);
893 avio_rb32(pb); /* modification time */
895 mov_metadata_creation_time(&c->fc->metadata, creation_time);
896 c->time_scale = avio_rb32(pb); /* time scale */
898 av_dlog(c->fc, "time scale = %i\n", c->time_scale);
900 c->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
901 // set the AVCodecContext duration because the duration of individual tracks
903 if (c->time_scale > 0)
904 c->fc->duration = av_rescale(c->duration, AV_TIME_BASE, c->time_scale);
905 avio_rb32(pb); /* preferred scale */
907 avio_rb16(pb); /* preferred volume */
909 avio_skip(pb, 10); /* reserved */
911 avio_skip(pb, 36); /* display matrix */
913 avio_rb32(pb); /* preview time */
914 avio_rb32(pb); /* preview duration */
915 avio_rb32(pb); /* poster time */
916 avio_rb32(pb); /* selection time */
917 avio_rb32(pb); /* selection duration */
918 avio_rb32(pb); /* current time */
919 avio_rb32(pb); /* next track ID */
923 static int mov_read_smi(MOVContext *c, AVIOContext *pb, MOVAtom atom)
927 if (c->fc->nb_streams < 1)
929 st = c->fc->streams[c->fc->nb_streams-1];
931 if ((uint64_t)atom.size > (1<<30))
932 return AVERROR_INVALIDDATA;
934 // currently SVQ3 decoder expect full STSD header - so let's fake it
935 // this should be fixed and just SMI header should be passed
936 av_free(st->codec->extradata);
937 st->codec->extradata_size = 0;
938 st->codec->extradata = av_mallocz(atom.size + 0x5a + FF_INPUT_BUFFER_PADDING_SIZE);
939 if (!st->codec->extradata)
940 return AVERROR(ENOMEM);
941 st->codec->extradata_size = 0x5a + atom.size;
942 memcpy(st->codec->extradata, "SVQ3", 4); // fake
943 avio_read(pb, st->codec->extradata + 0x5a, atom.size);
944 av_dlog(c->fc, "Reading SMI %"PRId64" %s\n", atom.size, st->codec->extradata + 0x5a);
948 static int mov_read_enda(MOVContext *c, AVIOContext *pb, MOVAtom atom)
953 if (c->fc->nb_streams < 1)
955 st = c->fc->streams[c->fc->nb_streams-1];
957 little_endian = avio_rb16(pb) & 0xFF;
958 av_dlog(c->fc, "enda %d\n", little_endian);
959 if (little_endian == 1) {
960 switch (st->codec->codec_id) {
961 case CODEC_ID_PCM_S24BE:
962 st->codec->codec_id = CODEC_ID_PCM_S24LE;
964 case CODEC_ID_PCM_S32BE:
965 st->codec->codec_id = CODEC_ID_PCM_S32LE;
967 case CODEC_ID_PCM_F32BE:
968 st->codec->codec_id = CODEC_ID_PCM_F32LE;
970 case CODEC_ID_PCM_F64BE:
971 st->codec->codec_id = CODEC_ID_PCM_F64LE;
980 static int mov_read_fiel(MOVContext *c, AVIOContext *pb, MOVAtom atom)
983 unsigned mov_field_order;
984 enum AVFieldOrder decoded_field_order = AV_FIELD_UNKNOWN;
986 if (c->fc->nb_streams < 1) // will happen with jp2 files
988 st = c->fc->streams[c->fc->nb_streams-1];
990 return AVERROR_INVALIDDATA;
991 mov_field_order = avio_rb16(pb);
992 if ((mov_field_order & 0xFF00) == 0x0100)
993 decoded_field_order = AV_FIELD_PROGRESSIVE;
994 else if ((mov_field_order & 0xFF00) == 0x0200) {
995 switch (mov_field_order & 0xFF) {
996 case 0x01: decoded_field_order = AV_FIELD_TT;
998 case 0x06: decoded_field_order = AV_FIELD_BB;
1000 case 0x09: decoded_field_order = AV_FIELD_TB;
1002 case 0x0E: decoded_field_order = AV_FIELD_BT;
1006 if (decoded_field_order == AV_FIELD_UNKNOWN && mov_field_order) {
1007 av_log(NULL, AV_LOG_ERROR, "Unknown MOV field order 0x%04x\n", mov_field_order);
1009 st->codec->field_order = decoded_field_order;
1014 /* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
1015 static int mov_read_extradata(MOVContext *c, AVIOContext *pb, MOVAtom atom,
1016 enum CodecID codec_id)
1022 if (c->fc->nb_streams < 1) // will happen with jp2 files
1024 st= c->fc->streams[c->fc->nb_streams-1];
1026 if (st->codec->codec_id != codec_id)
1027 return 0; /* unexpected codec_id - don't mess with extradata */
1029 size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
1030 if (size > INT_MAX || (uint64_t)atom.size > INT_MAX)
1031 return AVERROR_INVALIDDATA;
1032 buf= av_realloc(st->codec->extradata, size);
1034 return AVERROR(ENOMEM);
1035 st->codec->extradata= buf;
1036 buf+= st->codec->extradata_size;
1037 st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE;
1038 AV_WB32( buf , atom.size + 8);
1039 AV_WL32( buf + 4, atom.type);
1040 avio_read(pb, buf + 8, atom.size);
1044 /* wrapper functions for reading ALAC/AVS/MJPEG/MJPEG2000 extradata atoms only for those codecs */
1045 static int mov_read_alac(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1047 return mov_read_extradata(c, pb, atom, CODEC_ID_ALAC);
1050 static int mov_read_avss(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1052 return mov_read_extradata(c, pb, atom, CODEC_ID_AVS);
1055 static int mov_read_jp2h(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1057 return mov_read_extradata(c, pb, atom, CODEC_ID_JPEG2000);
1060 static int mov_read_aprg(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1062 return mov_read_extradata(c, pb, atom, CODEC_ID_AVUI);
1065 static int mov_read_wave(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1069 if (c->fc->nb_streams < 1)
1071 st = c->fc->streams[c->fc->nb_streams-1];
1073 if ((uint64_t)atom.size > (1<<30))
1074 return AVERROR_INVALIDDATA;
1076 if (st->codec->codec_id == CODEC_ID_QDM2 || st->codec->codec_id == CODEC_ID_QDMC) {
1077 // pass all frma atom to codec, needed at least for QDMC and QDM2
1078 av_free(st->codec->extradata);
1079 st->codec->extradata_size = 0;
1080 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
1081 if (!st->codec->extradata)
1082 return AVERROR(ENOMEM);
1083 st->codec->extradata_size = atom.size;
1084 avio_read(pb, st->codec->extradata, atom.size);
1085 } else if (atom.size > 8) { /* to read frma, esds atoms */
1087 if ((ret = mov_read_default(c, pb, atom)) < 0)
1090 avio_skip(pb, atom.size);
1095 * This function reads atom content and puts data in extradata without tag
1096 * nor size unlike mov_read_extradata.
1098 static int mov_read_glbl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1102 if (c->fc->nb_streams < 1)
1104 st = c->fc->streams[c->fc->nb_streams-1];
1106 if ((uint64_t)atom.size > (1<<30))
1107 return AVERROR_INVALIDDATA;
1109 if (atom.size >= 10) {
1110 // Broken files created by legacy versions of libavformat will
1111 // wrap a whole fiel atom inside of a glbl atom.
1112 unsigned size = avio_rb32(pb);
1113 unsigned type = avio_rl32(pb);
1114 avio_seek(pb, -8, SEEK_CUR);
1115 if (type == MKTAG('f','i','e','l') && size == atom.size)
1116 return mov_read_default(c, pb, atom);
1118 av_free(st->codec->extradata);
1119 st->codec->extradata_size = 0;
1120 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
1121 if (!st->codec->extradata)
1122 return AVERROR(ENOMEM);
1123 st->codec->extradata_size = atom.size;
1124 avio_read(pb, st->codec->extradata, atom.size);
1128 static int mov_read_dvc1(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1131 uint8_t profile_level;
1133 if (c->fc->nb_streams < 1)
1135 st = c->fc->streams[c->fc->nb_streams-1];
1137 if (atom.size >= (1<<28) || atom.size < 7)
1138 return AVERROR_INVALIDDATA;
1140 profile_level = avio_r8(pb);
1141 if ((profile_level & 0xf0) != 0xc0)
1144 av_free(st->codec->extradata);
1145 st->codec->extradata_size = 0;
1146 st->codec->extradata = av_mallocz(atom.size - 7 + FF_INPUT_BUFFER_PADDING_SIZE);
1147 if (!st->codec->extradata)
1148 return AVERROR(ENOMEM);
1149 st->codec->extradata_size = atom.size - 7;
1150 avio_seek(pb, 6, SEEK_CUR);
1151 avio_read(pb, st->codec->extradata, st->codec->extradata_size);
1156 * An strf atom is a BITMAPINFOHEADER struct. This struct is 40 bytes itself,
1157 * but can have extradata appended at the end after the 40 bytes belonging
1160 static int mov_read_strf(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1164 if (c->fc->nb_streams < 1)
1166 if (atom.size <= 40)
1168 st = c->fc->streams[c->fc->nb_streams-1];
1170 if ((uint64_t)atom.size > (1<<30))
1171 return AVERROR_INVALIDDATA;
1173 av_free(st->codec->extradata);
1174 st->codec->extradata_size = 0;
1175 st->codec->extradata = av_mallocz(atom.size - 40 + FF_INPUT_BUFFER_PADDING_SIZE);
1176 if (!st->codec->extradata)
1177 return AVERROR(ENOMEM);
1178 st->codec->extradata_size = atom.size - 40;
1180 avio_read(pb, st->codec->extradata, atom.size - 40);
1184 static int mov_read_stco(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1187 MOVStreamContext *sc;
1188 unsigned int i, entries;
1190 if (c->fc->nb_streams < 1)
1192 st = c->fc->streams[c->fc->nb_streams-1];
1195 avio_r8(pb); /* version */
1196 avio_rb24(pb); /* flags */
1198 entries = avio_rb32(pb);
1202 if (entries >= UINT_MAX/sizeof(int64_t))
1203 return AVERROR_INVALIDDATA;
1205 sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
1206 if (!sc->chunk_offsets)
1207 return AVERROR(ENOMEM);
1208 sc->chunk_count = entries;
1210 if (atom.type == MKTAG('s','t','c','o'))
1211 for (i=0; i<entries; i++)
1212 sc->chunk_offsets[i] = avio_rb32(pb);
1213 else if (atom.type == MKTAG('c','o','6','4'))
1214 for (i=0; i<entries; i++)
1215 sc->chunk_offsets[i] = avio_rb64(pb);
1217 return AVERROR_INVALIDDATA;
1223 * Compute codec id for 'lpcm' tag.
1224 * See CoreAudioTypes and AudioStreamBasicDescription at Apple.
1226 enum CodecID ff_mov_get_lpcm_codec_id(int bps, int flags)
1228 if (flags & 1) { // floating point
1229 if (flags & 2) { // big endian
1230 if (bps == 32) return CODEC_ID_PCM_F32BE;
1231 else if (bps == 64) return CODEC_ID_PCM_F64BE;
1233 if (bps == 32) return CODEC_ID_PCM_F32LE;
1234 else if (bps == 64) return CODEC_ID_PCM_F64LE;
1240 if (flags & 4) return CODEC_ID_PCM_S8;
1241 else return CODEC_ID_PCM_U8;
1242 else if (bps == 16) return CODEC_ID_PCM_S16BE;
1243 else if (bps == 24) return CODEC_ID_PCM_S24BE;
1244 else if (bps == 32) return CODEC_ID_PCM_S32BE;
1247 if (flags & 4) return CODEC_ID_PCM_S8;
1248 else return CODEC_ID_PCM_U8;
1249 else if (bps == 16) return CODEC_ID_PCM_S16LE;
1250 else if (bps == 24) return CODEC_ID_PCM_S24LE;
1251 else if (bps == 32) return CODEC_ID_PCM_S32LE;
1254 return CODEC_ID_NONE;
1257 int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries)
1260 MOVStreamContext *sc;
1261 int j, pseudo_stream_id;
1263 if (c->fc->nb_streams < 1)
1265 st = c->fc->streams[c->fc->nb_streams-1];
1268 for (pseudo_stream_id=0; pseudo_stream_id<entries; pseudo_stream_id++) {
1269 //Parsing Sample description table
1272 MOVAtom a = { AV_RL32("stsd") };
1273 int64_t start_pos = avio_tell(pb);
1274 int size = avio_rb32(pb); /* size */
1275 uint32_t format = avio_rl32(pb); /* data format */
1278 avio_rb32(pb); /* reserved */
1279 avio_rb16(pb); /* reserved */
1280 dref_id = avio_rb16(pb);
1281 }else if (size <= 0){
1282 av_log(c->fc, AV_LOG_ERROR, "invalid size %d in stsd\n", size);
1286 if (st->codec->codec_tag &&
1287 st->codec->codec_tag != format &&
1288 (c->fc->video_codec_id ? ff_codec_get_id(ff_codec_movvideo_tags, format) != c->fc->video_codec_id
1289 : st->codec->codec_tag != MKTAG('j','p','e','g'))
1291 /* Multiple fourcc, we skip JPEG. This is not correct, we should
1292 * export it as a separate AVStream but this needs a few changes
1293 * in the MOV demuxer, patch welcome. */
1294 av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n");
1295 avio_skip(pb, size - (avio_tell(pb) - start_pos));
1298 /* we cannot demux concatenated h264 streams because of different extradata */
1299 if (st->codec->codec_tag && st->codec->codec_tag == AV_RL32("avc1"))
1300 av_log(c->fc, AV_LOG_WARNING, "Concatenated H.264 might not play corrently.\n");
1301 sc->pseudo_stream_id = st->codec->codec_tag ? -1 : pseudo_stream_id;
1302 sc->dref_id= dref_id;
1304 st->codec->codec_tag = format;
1305 id = ff_codec_get_id(ff_codec_movaudio_tags, format);
1306 if (id<=0 && ((format&0xFFFF) == 'm'+('s'<<8) || (format&0xFFFF) == 'T'+('S'<<8)))
1307 id = ff_codec_get_id(ff_codec_wav_tags, av_bswap32(format)&0xFFFF);
1309 if (st->codec->codec_type != AVMEDIA_TYPE_VIDEO && id > 0) {
1310 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
1311 } else if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO && /* do not overwrite codec type */
1312 format && format != MKTAG('m','p','4','s')) { /* skip old asf mpeg4 tag */
1313 id = ff_codec_get_id(ff_codec_movvideo_tags, format);
1315 id = ff_codec_get_id(ff_codec_bmp_tags, format);
1317 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
1318 else if (st->codec->codec_type == AVMEDIA_TYPE_DATA ||
1319 (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE &&
1320 st->codec->codec_id == CODEC_ID_NONE)){
1321 id = ff_codec_get_id(ff_codec_movsubtitle_tags, format);
1323 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
1327 av_dlog(c->fc, "size=%d 4CC= %c%c%c%c codec_type=%d\n", size,
1328 (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff,
1329 (format >> 24) & 0xff, st->codec->codec_type);
1331 if (st->codec->codec_type==AVMEDIA_TYPE_VIDEO) {
1332 unsigned int color_depth, len;
1333 int color_greyscale;
1336 st->codec->codec_id = id;
1337 avio_rb16(pb); /* version */
1338 avio_rb16(pb); /* revision level */
1339 avio_rb32(pb); /* vendor */
1340 avio_rb32(pb); /* temporal quality */
1341 avio_rb32(pb); /* spatial quality */
1343 st->codec->width = avio_rb16(pb); /* width */
1344 st->codec->height = avio_rb16(pb); /* height */
1346 avio_rb32(pb); /* horiz resolution */
1347 avio_rb32(pb); /* vert resolution */
1348 avio_rb32(pb); /* data size, always 0 */
1349 avio_rb16(pb); /* frames per samples */
1351 len = avio_r8(pb); /* codec name, pascal string */
1354 mov_read_mac_string(c, pb, len, st->codec->codec_name, 32);
1356 avio_skip(pb, 31 - len);
1357 /* codec_tag YV12 triggers an UV swap in rawdec.c */
1358 if (!memcmp(st->codec->codec_name, "Planar Y'CbCr 8-bit 4:2:0", 25))
1359 st->codec->codec_tag=MKTAG('I', '4', '2', '0');
1361 st->codec->bits_per_coded_sample = avio_rb16(pb); /* depth */
1362 color_table_id = avio_rb16(pb); /* colortable id */
1363 av_dlog(c->fc, "depth %d, ctab id %d\n",
1364 st->codec->bits_per_coded_sample, color_table_id);
1365 /* figure out the palette situation */
1366 color_depth = st->codec->bits_per_coded_sample & 0x1F;
1367 color_greyscale = st->codec->bits_per_coded_sample & 0x20;
1369 /* if the depth is 2, 4, or 8 bpp, file is palettized */
1370 if ((color_depth == 2) || (color_depth == 4) ||
1371 (color_depth == 8)) {
1372 /* for palette traversal */
1373 unsigned int color_start, color_count, color_end;
1374 unsigned char a, r, g, b;
1376 if (color_greyscale) {
1377 int color_index, color_dec;
1378 /* compute the greyscale palette */
1379 st->codec->bits_per_coded_sample = color_depth;
1380 color_count = 1 << color_depth;
1382 color_dec = 256 / (color_count - 1);
1383 for (j = 0; j < color_count; j++) {
1384 if (id == CODEC_ID_CINEPAK){
1385 r = g = b = color_count - 1 - color_index;
1387 r = g = b = color_index;
1389 (0xFFU << 24) | (r << 16) | (g << 8) | (b);
1390 color_index -= color_dec;
1391 if (color_index < 0)
1394 } else if (color_table_id) {
1395 const uint8_t *color_table;
1396 /* if flag bit 3 is set, use the default palette */
1397 color_count = 1 << color_depth;
1398 if (color_depth == 2)
1399 color_table = ff_qt_default_palette_4;
1400 else if (color_depth == 4)
1401 color_table = ff_qt_default_palette_16;
1403 color_table = ff_qt_default_palette_256;
1405 for (j = 0; j < color_count; j++) {
1406 r = color_table[j * 3 + 0];
1407 g = color_table[j * 3 + 1];
1408 b = color_table[j * 3 + 2];
1410 (0xFFU << 24) | (r << 16) | (g << 8) | (b);
1413 /* load the palette from the file */
1414 color_start = avio_rb32(pb);
1415 color_count = avio_rb16(pb);
1416 color_end = avio_rb16(pb);
1417 if ((color_start <= 255) &&
1418 (color_end <= 255)) {
1419 for (j = color_start; j <= color_end; j++) {
1420 /* each A, R, G, or B component is 16 bits;
1421 * only use the top 8 bits */
1431 (a << 24 ) | (r << 16) | (g << 8) | (b);
1435 sc->has_palette = 1;
1437 } else if (st->codec->codec_type==AVMEDIA_TYPE_AUDIO) {
1438 int bits_per_sample, flags;
1439 uint16_t version = avio_rb16(pb);
1441 st->codec->codec_id = id;
1442 avio_rb16(pb); /* revision level */
1443 avio_rb32(pb); /* vendor */
1445 st->codec->channels = avio_rb16(pb); /* channel count */
1446 av_dlog(c->fc, "audio channels %d\n", st->codec->channels);
1447 st->codec->bits_per_coded_sample = avio_rb16(pb); /* sample size */
1449 sc->audio_cid = avio_rb16(pb);
1450 avio_rb16(pb); /* packet size = 0 */
1452 st->codec->sample_rate = ((avio_rb32(pb) >> 16));
1454 //Read QT version 1 fields. In version 0 these do not exist.
1455 av_dlog(c->fc, "version =%d, isom =%d\n",version,c->isom);
1458 sc->samples_per_frame = avio_rb32(pb);
1459 avio_rb32(pb); /* bytes per packet */
1460 sc->bytes_per_frame = avio_rb32(pb);
1461 avio_rb32(pb); /* bytes per sample */
1462 } else if (version==2) {
1463 avio_rb32(pb); /* sizeof struct only */
1464 st->codec->sample_rate = av_int2double(avio_rb64(pb)); /* float 64 */
1465 st->codec->channels = avio_rb32(pb);
1466 avio_rb32(pb); /* always 0x7F000000 */
1467 st->codec->bits_per_coded_sample = avio_rb32(pb); /* bits per channel if sound is uncompressed */
1468 flags = avio_rb32(pb); /* lpcm format specific flag */
1469 sc->bytes_per_frame = avio_rb32(pb); /* bytes per audio packet if constant */
1470 sc->samples_per_frame = avio_rb32(pb); /* lpcm frames per audio packet if constant */
1471 if (format == MKTAG('l','p','c','m'))
1472 st->codec->codec_id = ff_mov_get_lpcm_codec_id(st->codec->bits_per_coded_sample, flags);
1476 switch (st->codec->codec_id) {
1477 case CODEC_ID_PCM_S8:
1478 case CODEC_ID_PCM_U8:
1479 if (st->codec->bits_per_coded_sample == 16)
1480 st->codec->codec_id = CODEC_ID_PCM_S16BE;
1482 case CODEC_ID_PCM_S16LE:
1483 case CODEC_ID_PCM_S16BE:
1484 if (st->codec->bits_per_coded_sample == 8)
1485 st->codec->codec_id = CODEC_ID_PCM_S8;
1486 else if (st->codec->bits_per_coded_sample == 24)
1487 st->codec->codec_id =
1488 st->codec->codec_id == CODEC_ID_PCM_S16BE ?
1489 CODEC_ID_PCM_S24BE : CODEC_ID_PCM_S24LE;
1491 /* set values for old format before stsd version 1 appeared */
1492 case CODEC_ID_MACE3:
1493 sc->samples_per_frame = 6;
1494 sc->bytes_per_frame = 2*st->codec->channels;
1496 case CODEC_ID_MACE6:
1497 sc->samples_per_frame = 6;
1498 sc->bytes_per_frame = 1*st->codec->channels;
1500 case CODEC_ID_ADPCM_IMA_QT:
1501 sc->samples_per_frame = 64;
1502 sc->bytes_per_frame = 34*st->codec->channels;
1505 sc->samples_per_frame = 160;
1506 sc->bytes_per_frame = 33;
1512 bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
1513 if (bits_per_sample) {
1514 st->codec->bits_per_coded_sample = bits_per_sample;
1515 sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
1517 } else if (st->codec->codec_type==AVMEDIA_TYPE_SUBTITLE){
1518 // ttxt stsd contains display flags, justification, background
1519 // color, fonts, and default styles, so fake an atom to read it
1520 MOVAtom fake_atom = { .size = size - (avio_tell(pb) - start_pos) };
1521 if (format != AV_RL32("mp4s")) // mp4s contains a regular esds atom
1522 mov_read_glbl(c, pb, fake_atom);
1523 st->codec->codec_id= id;
1524 st->codec->width = sc->width;
1525 st->codec->height = sc->height;
1527 if (st->codec->codec_tag == MKTAG('t','m','c','d')) {
1528 MOVStreamContext *tmcd_ctx = st->priv_data;
1530 avio_rb32(pb); /* reserved */
1531 val = avio_rb32(pb); /* flags */
1532 tmcd_ctx->tmcd_flags = val;
1534 st->codec->flags2 |= CODEC_FLAG2_DROP_FRAME_TIMECODE;
1535 avio_rb32(pb); /* time scale */
1536 avio_rb32(pb); /* frame duration */
1537 st->codec->time_base.den = avio_r8(pb); /* number of frame */
1538 st->codec->time_base.num = 1;
1540 /* other codec type, just skip (rtp, mp4s, ...) */
1541 avio_skip(pb, size - (avio_tell(pb) - start_pos));
1543 /* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */
1544 a.size = size - (avio_tell(pb) - start_pos);
1547 if ((ret = mov_read_default(c, pb, a)) < 0)
1549 } else if (a.size > 0)
1550 avio_skip(pb, a.size);
1553 if (st->codec->codec_type==AVMEDIA_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1)
1554 st->codec->sample_rate= sc->time_scale;
1556 /* special codec parameters handling */
1557 switch (st->codec->codec_id) {
1558 #if CONFIG_DV_DEMUXER
1559 case CODEC_ID_DVAUDIO:
1560 c->dv_fctx = avformat_alloc_context();
1561 c->dv_demux = avpriv_dv_init_demux(c->dv_fctx);
1563 av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
1564 return AVERROR(ENOMEM);
1566 sc->dv_audio_container = 1;
1567 st->codec->codec_id = CODEC_ID_PCM_S16LE;
1570 /* no ifdef since parameters are always those */
1571 case CODEC_ID_QCELP:
1572 // force sample rate for qcelp when not stored in mov
1573 if (st->codec->codec_tag != MKTAG('Q','c','l','p'))
1574 st->codec->sample_rate = 8000;
1575 st->codec->channels= 1; /* really needed */
1577 case CODEC_ID_AMR_NB:
1578 st->codec->channels= 1; /* really needed */
1579 /* force sample rate for amr, stsd in 3gp does not store sample rate */
1580 st->codec->sample_rate = 8000;
1582 case CODEC_ID_AMR_WB:
1583 st->codec->channels = 1;
1584 st->codec->sample_rate = 16000;
1588 st->codec->codec_type = AVMEDIA_TYPE_AUDIO; /* force type after stsd for m1a hdlr */
1589 st->need_parsing = AVSTREAM_PARSE_FULL;
1592 case CODEC_ID_ADPCM_MS:
1593 case CODEC_ID_ADPCM_IMA_WAV:
1595 st->codec->block_align = sc->bytes_per_frame;
1598 if (st->codec->extradata_size == 36) {
1599 st->codec->channels = AV_RB8 (st->codec->extradata+21);
1600 st->codec->sample_rate = AV_RB32(st->codec->extradata+32);
1604 st->need_parsing = AVSTREAM_PARSE_FULL;
1606 case CODEC_ID_MPEG1VIDEO:
1607 st->need_parsing = AVSTREAM_PARSE_FULL;
1610 st->need_parsing = AVSTREAM_PARSE_FULL;
1619 static int mov_read_stsd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1623 avio_r8(pb); /* version */
1624 avio_rb24(pb); /* flags */
1625 entries = avio_rb32(pb);
1627 return ff_mov_read_stsd_entries(c, pb, entries);
1630 static int mov_read_stsc(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1633 MOVStreamContext *sc;
1634 unsigned int i, entries;
1636 if (c->fc->nb_streams < 1)
1638 st = c->fc->streams[c->fc->nb_streams-1];
1641 avio_r8(pb); /* version */
1642 avio_rb24(pb); /* flags */
1644 entries = avio_rb32(pb);
1646 av_dlog(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
1650 if (entries >= UINT_MAX / sizeof(*sc->stsc_data))
1651 return AVERROR_INVALIDDATA;
1652 sc->stsc_data = av_malloc(entries * sizeof(*sc->stsc_data));
1654 return AVERROR(ENOMEM);
1655 sc->stsc_count = entries;
1657 for (i=0; i<entries; i++) {
1658 sc->stsc_data[i].first = avio_rb32(pb);
1659 sc->stsc_data[i].count = avio_rb32(pb);
1660 sc->stsc_data[i].id = avio_rb32(pb);
1665 static int mov_read_stps(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1668 MOVStreamContext *sc;
1669 unsigned i, entries;
1671 if (c->fc->nb_streams < 1)
1673 st = c->fc->streams[c->fc->nb_streams-1];
1676 avio_rb32(pb); // version + flags
1678 entries = avio_rb32(pb);
1679 if (entries >= UINT_MAX / sizeof(*sc->stps_data))
1680 return AVERROR_INVALIDDATA;
1681 sc->stps_data = av_malloc(entries * sizeof(*sc->stps_data));
1683 return AVERROR(ENOMEM);
1684 sc->stps_count = entries;
1686 for (i = 0; i < entries; i++) {
1687 sc->stps_data[i] = avio_rb32(pb);
1688 //av_dlog(c->fc, "stps %d\n", sc->stps_data[i]);
1694 static int mov_read_stss(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1697 MOVStreamContext *sc;
1698 unsigned int i, entries;
1700 if (c->fc->nb_streams < 1)
1702 st = c->fc->streams[c->fc->nb_streams-1];
1705 avio_r8(pb); /* version */
1706 avio_rb24(pb); /* flags */
1708 entries = avio_rb32(pb);
1710 av_dlog(c->fc, "keyframe_count = %d\n", entries);
1714 sc->keyframe_absent = 1;
1717 if (entries >= UINT_MAX / sizeof(int))
1718 return AVERROR_INVALIDDATA;
1719 sc->keyframes = av_malloc(entries * sizeof(int));
1721 return AVERROR(ENOMEM);
1722 sc->keyframe_count = entries;
1724 for (i=0; i<entries; i++) {
1725 sc->keyframes[i] = avio_rb32(pb);
1726 //av_dlog(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
1731 static int mov_read_stsz(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1734 MOVStreamContext *sc;
1735 unsigned int i, entries, sample_size, field_size, num_bytes;
1739 if (c->fc->nb_streams < 1)
1741 st = c->fc->streams[c->fc->nb_streams-1];
1744 avio_r8(pb); /* version */
1745 avio_rb24(pb); /* flags */
1747 if (atom.type == MKTAG('s','t','s','z')) {
1748 sample_size = avio_rb32(pb);
1749 if (!sc->sample_size) /* do not overwrite value computed in stsd */
1750 sc->sample_size = sample_size;
1751 sc->alt_sample_size = sample_size;
1755 avio_rb24(pb); /* reserved */
1756 field_size = avio_r8(pb);
1758 entries = avio_rb32(pb);
1760 av_dlog(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, entries);
1762 sc->sample_count = entries;
1766 if (field_size != 4 && field_size != 8 && field_size != 16 && field_size != 32) {
1767 av_log(c->fc, AV_LOG_ERROR, "Invalid sample field size %d\n", field_size);
1768 return AVERROR_INVALIDDATA;
1773 if (entries >= UINT_MAX / sizeof(int) || entries >= (UINT_MAX - 4) / field_size)
1774 return AVERROR_INVALIDDATA;
1775 sc->sample_sizes = av_malloc(entries * sizeof(int));
1776 if (!sc->sample_sizes)
1777 return AVERROR(ENOMEM);
1779 num_bytes = (entries*field_size+4)>>3;
1781 buf = av_malloc(num_bytes+FF_INPUT_BUFFER_PADDING_SIZE);
1783 av_freep(&sc->sample_sizes);
1784 return AVERROR(ENOMEM);
1787 if (avio_read(pb, buf, num_bytes) < num_bytes) {
1788 av_freep(&sc->sample_sizes);
1790 return AVERROR_INVALIDDATA;
1793 init_get_bits(&gb, buf, 8*num_bytes);
1795 for (i = 0; i < entries; i++) {
1796 sc->sample_sizes[i] = get_bits_long(&gb, field_size);
1797 sc->data_size += sc->sample_sizes[i];
1804 static int mov_read_stts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1807 MOVStreamContext *sc;
1808 unsigned int i, entries;
1810 int64_t total_sample_count=0;
1812 if (c->fc->nb_streams < 1)
1814 st = c->fc->streams[c->fc->nb_streams-1];
1817 avio_r8(pb); /* version */
1818 avio_rb24(pb); /* flags */
1819 entries = avio_rb32(pb);
1821 av_dlog(c->fc, "track[%i].stts.entries = %i\n",
1822 c->fc->nb_streams-1, entries);
1824 if (entries >= UINT_MAX / sizeof(*sc->stts_data))
1827 sc->stts_data = av_malloc(entries * sizeof(*sc->stts_data));
1829 return AVERROR(ENOMEM);
1831 sc->stts_count = entries;
1833 for (i=0; i<entries; i++) {
1834 int sample_duration;
1837 sample_count=avio_rb32(pb);
1838 sample_duration = avio_rb32(pb);
1839 /* sample_duration < 0 is invalid based on the spec */
1840 if (sample_duration < 0) {
1841 av_log(c->fc, AV_LOG_ERROR, "Invalid SampleDelta in STTS %d\n", sample_duration);
1842 sample_duration = 1;
1844 sc->stts_data[i].count= sample_count;
1845 sc->stts_data[i].duration= sample_duration;
1847 av_dlog(c->fc, "sample_count=%d, sample_duration=%d\n",
1848 sample_count, sample_duration);
1850 duration+=(int64_t)sample_duration*sample_count;
1851 total_sample_count+=sample_count;
1854 st->nb_frames= total_sample_count;
1856 st->duration= duration;
1857 sc->track_end = duration;
1861 static int mov_read_ctts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1864 MOVStreamContext *sc;
1865 unsigned int i, entries;
1867 if (c->fc->nb_streams < 1)
1869 st = c->fc->streams[c->fc->nb_streams-1];
1872 avio_r8(pb); /* version */
1873 avio_rb24(pb); /* flags */
1874 entries = avio_rb32(pb);
1876 av_dlog(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
1880 if (entries >= UINT_MAX / sizeof(*sc->ctts_data))
1881 return AVERROR_INVALIDDATA;
1882 sc->ctts_data = av_malloc(entries * sizeof(*sc->ctts_data));
1884 return AVERROR(ENOMEM);
1885 sc->ctts_count = entries;
1887 for (i=0; i<entries; i++) {
1888 int count =avio_rb32(pb);
1889 int duration =avio_rb32(pb);
1891 sc->ctts_data[i].count = count;
1892 sc->ctts_data[i].duration= duration;
1894 if (FFABS(duration) > (1<<28) && i+2<entries) {
1895 av_log(c->fc, AV_LOG_WARNING, "CTTS invalid\n");
1896 av_freep(&sc->ctts_data);
1901 if (duration < 0 && i+2<entries)
1902 sc->dts_shift = FFMAX(sc->dts_shift, -duration);
1905 av_dlog(c->fc, "dts shift %d\n", sc->dts_shift);
1910 static void mov_build_index(MOVContext *mov, AVStream *st)
1912 MOVStreamContext *sc = st->priv_data;
1913 int64_t current_offset;
1914 int64_t current_dts = 0;
1915 unsigned int stts_index = 0;
1916 unsigned int stsc_index = 0;
1917 unsigned int stss_index = 0;
1918 unsigned int stps_index = 0;
1920 uint64_t stream_size = 0;
1923 /* adjust first dts according to edit list */
1924 if ((sc->empty_duration || sc->start_time) && mov->time_scale > 0) {
1925 if (sc->empty_duration)
1926 sc->empty_duration = av_rescale(sc->empty_duration, sc->time_scale, mov->time_scale);
1927 sc->time_offset = sc->start_time - sc->empty_duration;
1928 current_dts = -sc->time_offset;
1929 if (sc->ctts_count>0 && sc->stts_count>0 &&
1930 sc->ctts_data[0].duration / FFMAX(sc->stts_data[0].duration, 1) > 16) {
1931 /* more than 16 frames delay, dts are likely wrong
1932 this happens with files created by iMovie */
1934 st->codec->has_b_frames = 1;
1938 /* only use old uncompressed audio chunk demuxing when stts specifies it */
1939 if (!(st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
1940 sc->stts_count == 1 && sc->stts_data[0].duration == 1)) {
1941 unsigned int current_sample = 0;
1942 unsigned int stts_sample = 0;
1943 unsigned int sample_size;
1944 unsigned int distance = 0;
1945 int key_off = (sc->keyframe_count && sc->keyframes[0] > 0) || (sc->stps_data && sc->stps_data[0] > 0);
1947 current_dts -= sc->dts_shift;
1949 if (!sc->sample_count || st->nb_index_entries)
1951 if (sc->sample_count >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries)
1953 mem = av_realloc(st->index_entries, (st->nb_index_entries + sc->sample_count) * sizeof(*st->index_entries));
1956 st->index_entries = mem;
1957 st->index_entries_allocated_size = (st->nb_index_entries + sc->sample_count) * sizeof(*st->index_entries);
1959 for (i = 0; i < sc->chunk_count; i++) {
1960 current_offset = sc->chunk_offsets[i];
1961 while (stsc_index + 1 < sc->stsc_count &&
1962 i + 1 == sc->stsc_data[stsc_index + 1].first)
1964 for (j = 0; j < sc->stsc_data[stsc_index].count; j++) {
1966 if (current_sample >= sc->sample_count) {
1967 av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
1971 if (!sc->keyframe_absent && (!sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index])) {
1973 if (stss_index + 1 < sc->keyframe_count)
1975 } else if (sc->stps_count && current_sample+key_off == sc->stps_data[stps_index]) {
1977 if (stps_index + 1 < sc->stps_count)
1982 sample_size = sc->alt_sample_size > 0 ? sc->alt_sample_size : sc->sample_sizes[current_sample];
1983 if (sc->pseudo_stream_id == -1 ||
1984 sc->stsc_data[stsc_index].id - 1 == sc->pseudo_stream_id) {
1985 AVIndexEntry *e = &st->index_entries[st->nb_index_entries++];
1986 e->pos = current_offset;
1987 e->timestamp = current_dts;
1988 e->size = sample_size;
1989 e->min_distance = distance;
1990 e->flags = keyframe ? AVINDEX_KEYFRAME : 0;
1991 av_dlog(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
1992 "size %d, distance %d, keyframe %d\n", st->index, current_sample,
1993 current_offset, current_dts, sample_size, distance, keyframe);
1996 current_offset += sample_size;
1997 stream_size += sample_size;
1998 current_dts += sc->stts_data[stts_index].duration;
2002 if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
2008 if (st->duration > 0)
2009 st->codec->bit_rate = stream_size*8*sc->time_scale/st->duration;
2011 unsigned chunk_samples, total = 0;
2013 // compute total chunk count
2014 for (i = 0; i < sc->stsc_count; i++) {
2015 unsigned count, chunk_count;
2017 chunk_samples = sc->stsc_data[i].count;
2018 if (i != sc->stsc_count - 1 &&
2019 sc->samples_per_frame && chunk_samples % sc->samples_per_frame) {
2020 av_log(mov->fc, AV_LOG_ERROR, "error unaligned chunk\n");
2024 if (sc->samples_per_frame >= 160) { // gsm
2025 count = chunk_samples / sc->samples_per_frame;
2026 } else if (sc->samples_per_frame > 1) {
2027 unsigned samples = (1024/sc->samples_per_frame)*sc->samples_per_frame;
2028 count = (chunk_samples+samples-1) / samples;
2030 count = (chunk_samples+1023) / 1024;
2033 if (i < sc->stsc_count - 1)
2034 chunk_count = sc->stsc_data[i+1].first - sc->stsc_data[i].first;
2036 chunk_count = sc->chunk_count - (sc->stsc_data[i].first - 1);
2037 total += chunk_count * count;
2040 av_dlog(mov->fc, "chunk count %d\n", total);
2041 if (total >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries)
2043 mem = av_realloc(st->index_entries, (st->nb_index_entries + total) * sizeof(*st->index_entries));
2046 st->index_entries = mem;
2047 st->index_entries_allocated_size = (st->nb_index_entries + total) * sizeof(*st->index_entries);
2050 for (i = 0; i < sc->chunk_count; i++) {
2051 current_offset = sc->chunk_offsets[i];
2052 if (stsc_index + 1 < sc->stsc_count &&
2053 i + 1 == sc->stsc_data[stsc_index + 1].first)
2055 chunk_samples = sc->stsc_data[stsc_index].count;
2057 while (chunk_samples > 0) {
2059 unsigned size, samples;
2061 if (sc->samples_per_frame >= 160) { // gsm
2062 samples = sc->samples_per_frame;
2063 size = sc->bytes_per_frame;
2065 if (sc->samples_per_frame > 1) {
2066 samples = FFMIN((1024 / sc->samples_per_frame)*
2067 sc->samples_per_frame, chunk_samples);
2068 size = (samples / sc->samples_per_frame) * sc->bytes_per_frame;
2070 samples = FFMIN(1024, chunk_samples);
2071 size = samples * sc->sample_size;
2075 if (st->nb_index_entries >= total) {
2076 av_log(mov->fc, AV_LOG_ERROR, "wrong chunk count %d\n", total);
2079 e = &st->index_entries[st->nb_index_entries++];
2080 e->pos = current_offset;
2081 e->timestamp = current_dts;
2083 e->min_distance = 0;
2084 e->flags = AVINDEX_KEYFRAME;
2085 av_dlog(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", "
2086 "size %d, duration %d\n", st->index, i, current_offset, current_dts,
2089 current_offset += size;
2090 current_dts += samples;
2091 chunk_samples -= samples;
2097 static int mov_open_dref(AVIOContext **pb, const char *src, MOVDref *ref,
2098 AVIOInterruptCB *int_cb, int use_absolute_path, AVFormatContext *fc)
2100 /* try relative path, we do not try the absolute because it can leak information about our
2101 system to an attacker */
2102 if (ref->nlvl_to > 0 && ref->nlvl_from > 0) {
2103 char filename[1024];
2104 const char *src_path;
2107 /* find a source dir */
2108 src_path = strrchr(src, '/');
2114 /* find a next level down to target */
2115 for (i = 0, l = strlen(ref->path) - 1; l >= 0; l--)
2116 if (ref->path[l] == '/') {
2117 if (i == ref->nlvl_to - 1)
2123 /* compose filename if next level down to target was found */
2124 if (i == ref->nlvl_to - 1 && src_path - src < sizeof(filename)) {
2125 memcpy(filename, src, src_path - src);
2126 filename[src_path - src] = 0;
2128 for (i = 1; i < ref->nlvl_from; i++)
2129 av_strlcat(filename, "../", 1024);
2131 av_strlcat(filename, ref->path + l + 1, 1024);
2133 if (!avio_open2(pb, filename, AVIO_FLAG_READ, int_cb, NULL))
2136 } else if (use_absolute_path) {
2137 av_log(fc, AV_LOG_WARNING, "Using absolute path on user request, "
2138 "this is a possible security issue\n");
2139 if (!avio_open2(pb, ref->path, AVIO_FLAG_READ, int_cb, NULL))
2143 return AVERROR(ENOENT);
2146 static int mov_read_trak(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2149 MOVStreamContext *sc;
2152 st = avformat_new_stream(c->fc, NULL);
2153 if (!st) return AVERROR(ENOMEM);
2154 st->id = c->fc->nb_streams;
2155 sc = av_mallocz(sizeof(MOVStreamContext));
2156 if (!sc) return AVERROR(ENOMEM);
2159 st->codec->codec_type = AVMEDIA_TYPE_DATA;
2160 sc->ffindex = st->index;
2162 if ((ret = mov_read_default(c, pb, atom)) < 0)
2166 if (sc->chunk_count && (!sc->stts_count || !sc->stsc_count ||
2167 (!sc->sample_size && !sc->sample_count))) {
2168 av_log(c->fc, AV_LOG_ERROR, "stream %d, missing mandatory atoms, broken header\n",
2173 if (sc->time_scale <= 0) {
2174 av_log(c->fc, AV_LOG_WARNING, "stream %d, timescale not set\n", st->index);
2175 sc->time_scale = c->time_scale;
2176 if (sc->time_scale <= 0)
2180 avpriv_set_pts_info(st, 64, 1, sc->time_scale);
2182 mov_build_index(c, st);
2184 if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) {
2185 MOVDref *dref = &sc->drefs[sc->dref_id - 1];
2186 if (mov_open_dref(&sc->pb, c->fc->filename, dref, &c->fc->interrupt_callback,
2187 c->use_absolute_path, c->fc) < 0)
2188 av_log(c->fc, AV_LOG_ERROR,
2189 "stream %d, error opening alias: path='%s', dir='%s', "
2190 "filename='%s', volume='%s', nlvl_from=%d, nlvl_to=%d\n",
2191 st->index, dref->path, dref->dir, dref->filename,
2192 dref->volume, dref->nlvl_from, dref->nlvl_to);
2196 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2197 if (!st->sample_aspect_ratio.num &&
2198 (st->codec->width != sc->width || st->codec->height != sc->height)) {
2199 st->sample_aspect_ratio = av_d2q(((double)st->codec->height * sc->width) /
2200 ((double)st->codec->width * sc->height), INT_MAX);
2203 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
2204 sc->time_scale*st->nb_frames, st->duration, INT_MAX);
2206 if (sc->stts_count == 1 || (sc->stts_count == 2 && sc->stts_data[1].count == 1))
2207 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den,
2208 sc->time_scale, sc->stts_data[0].duration, INT_MAX);
2211 switch (st->codec->codec_id) {
2212 #if CONFIG_H261_DECODER
2215 #if CONFIG_H263_DECODER
2218 #if CONFIG_MPEG4_DECODER
2219 case CODEC_ID_MPEG4:
2221 st->codec->width = 0; /* let decoder init width/height */
2222 st->codec->height= 0;
2226 /* Do not need those anymore. */
2227 av_freep(&sc->chunk_offsets);
2228 av_freep(&sc->stsc_data);
2229 av_freep(&sc->sample_sizes);
2230 av_freep(&sc->keyframes);
2231 av_freep(&sc->stts_data);
2232 av_freep(&sc->stps_data);
2237 static int mov_read_ilst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2240 c->itunes_metadata = 1;
2241 ret = mov_read_default(c, pb, atom);
2242 c->itunes_metadata = 0;
2246 static int mov_read_meta(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2248 while (atom.size > 8) {
2249 uint32_t tag = avio_rl32(pb);
2251 if (tag == MKTAG('h','d','l','r')) {
2252 avio_seek(pb, -8, SEEK_CUR);
2254 return mov_read_default(c, pb, atom);
2260 static int mov_read_tkhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2265 int64_t disp_transform[2];
2266 int display_matrix[3][2];
2268 MOVStreamContext *sc;
2271 if (c->fc->nb_streams < 1)
2273 st = c->fc->streams[c->fc->nb_streams-1];
2276 version = avio_r8(pb);
2277 avio_rb24(pb); /* flags */
2279 MOV_TRACK_ENABLED 0x0001
2280 MOV_TRACK_IN_MOVIE 0x0002
2281 MOV_TRACK_IN_PREVIEW 0x0004
2282 MOV_TRACK_IN_POSTER 0x0008
2289 avio_rb32(pb); /* creation time */
2290 avio_rb32(pb); /* modification time */
2292 st->id = (int)avio_rb32(pb); /* track id (NOT 0 !)*/
2293 avio_rb32(pb); /* reserved */
2295 /* highlevel (considering edits) duration in movie timebase */
2296 (version == 1) ? avio_rb64(pb) : avio_rb32(pb);
2297 avio_rb32(pb); /* reserved */
2298 avio_rb32(pb); /* reserved */
2300 avio_rb16(pb); /* layer */
2301 avio_rb16(pb); /* alternate group */
2302 avio_rb16(pb); /* volume */
2303 avio_rb16(pb); /* reserved */
2305 //read in the display matrix (outlined in ISO 14496-12, Section 6.2.2)
2306 // they're kept in fixed point format through all calculations
2307 // ignore u,v,z b/c we don't need the scale factor to calc aspect ratio
2308 for (i = 0; i < 3; i++) {
2309 display_matrix[i][0] = avio_rb32(pb); // 16.16 fixed point
2310 display_matrix[i][1] = avio_rb32(pb); // 16.16 fixed point
2311 avio_rb32(pb); // 2.30 fixed point (not used)
2314 width = avio_rb32(pb); // 16.16 fixed point track width
2315 height = avio_rb32(pb); // 16.16 fixed point track height
2316 sc->width = width >> 16;
2317 sc->height = height >> 16;
2319 //Assign clockwise rotate values based on transform matrix so that
2320 //we can compensate for iPhone orientation during capture.
2322 if (display_matrix[1][0] == -65536 && display_matrix[0][1] == 65536) {
2323 av_dict_set(&st->metadata, "rotate", "90", 0);
2326 if (display_matrix[0][0] == -65536 && display_matrix[1][1] == -65536) {
2327 av_dict_set(&st->metadata, "rotate", "180", 0);
2330 if (display_matrix[1][0] == 65536 && display_matrix[0][1] == -65536) {
2331 av_dict_set(&st->metadata, "rotate", "270", 0);
2334 // transform the display width/height according to the matrix
2335 // skip this if the display matrix is the default identity matrix
2336 // or if it is rotating the picture, ex iPhone 3GS
2337 // to keep the same scale, use [width height 1<<16]
2338 if (width && height &&
2339 ((display_matrix[0][0] != 65536 ||
2340 display_matrix[1][1] != 65536) &&
2341 !display_matrix[0][1] &&
2342 !display_matrix[1][0] &&
2343 !display_matrix[2][0] && !display_matrix[2][1])) {
2344 for (i = 0; i < 2; i++)
2346 (int64_t) width * display_matrix[0][i] +
2347 (int64_t) height * display_matrix[1][i] +
2348 ((int64_t) display_matrix[2][i] << 16);
2350 //sample aspect ratio is new width/height divided by old width/height
2351 st->sample_aspect_ratio = av_d2q(
2352 ((double) disp_transform[0] * height) /
2353 ((double) disp_transform[1] * width), INT_MAX);
2358 static int mov_read_tfhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2360 MOVFragment *frag = &c->fragment;
2361 MOVTrackExt *trex = NULL;
2362 int flags, track_id, i;
2364 avio_r8(pb); /* version */
2365 flags = avio_rb24(pb);
2367 track_id = avio_rb32(pb);
2369 return AVERROR_INVALIDDATA;
2370 frag->track_id = track_id;
2371 for (i = 0; i < c->trex_count; i++)
2372 if (c->trex_data[i].track_id == frag->track_id) {
2373 trex = &c->trex_data[i];
2377 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding trex\n");
2378 return AVERROR_INVALIDDATA;
2381 frag->base_data_offset = flags & MOV_TFHD_BASE_DATA_OFFSET ?
2382 avio_rb64(pb) : frag->moof_offset;
2383 frag->stsd_id = flags & MOV_TFHD_STSD_ID ? avio_rb32(pb) : trex->stsd_id;
2385 frag->duration = flags & MOV_TFHD_DEFAULT_DURATION ?
2386 avio_rb32(pb) : trex->duration;
2387 frag->size = flags & MOV_TFHD_DEFAULT_SIZE ?
2388 avio_rb32(pb) : trex->size;
2389 frag->flags = flags & MOV_TFHD_DEFAULT_FLAGS ?
2390 avio_rb32(pb) : trex->flags;
2391 av_dlog(c->fc, "frag flags 0x%x\n", frag->flags);
2395 static int mov_read_chap(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2397 c->chapter_track = avio_rb32(pb);
2401 static int mov_read_trex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2405 if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data))
2406 return AVERROR_INVALIDDATA;
2407 trex = av_realloc(c->trex_data, (c->trex_count+1)*sizeof(*c->trex_data));
2409 return AVERROR(ENOMEM);
2411 c->fc->duration = AV_NOPTS_VALUE; // the duration from mvhd is not representing the whole file when fragments are used.
2413 c->trex_data = trex;
2414 trex = &c->trex_data[c->trex_count++];
2415 avio_r8(pb); /* version */
2416 avio_rb24(pb); /* flags */
2417 trex->track_id = avio_rb32(pb);
2418 trex->stsd_id = avio_rb32(pb);
2419 trex->duration = avio_rb32(pb);
2420 trex->size = avio_rb32(pb);
2421 trex->flags = avio_rb32(pb);
2425 static int mov_read_trun(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2427 MOVFragment *frag = &c->fragment;
2428 AVStream *st = NULL;
2429 MOVStreamContext *sc;
2433 int data_offset = 0;
2434 unsigned entries, first_sample_flags = frag->flags;
2435 int flags, distance, i, found_keyframe = 0;
2437 for (i = 0; i < c->fc->nb_streams; i++) {
2438 if (c->fc->streams[i]->id == frag->track_id) {
2439 st = c->fc->streams[i];
2444 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id);
2445 return AVERROR_INVALIDDATA;
2448 if (sc->pseudo_stream_id+1 != frag->stsd_id)
2450 avio_r8(pb); /* version */
2451 flags = avio_rb24(pb);
2452 entries = avio_rb32(pb);
2453 av_dlog(c->fc, "flags 0x%x entries %d\n", flags, entries);
2455 /* Always assume the presence of composition time offsets.
2456 * Without this assumption, for instance, we cannot deal with a track in fragmented movies that meet the following.
2457 * 1) in the initial movie, there are no samples.
2458 * 2) in the first movie fragment, there is only one sample without composition time offset.
2459 * 3) in the subsequent movie fragments, there are samples with composition time offset. */
2460 if (!sc->ctts_count && sc->sample_count)
2462 /* Complement ctts table if moov atom doesn't have ctts atom. */
2463 ctts_data = av_malloc(sizeof(*sc->ctts_data));
2465 return AVERROR(ENOMEM);
2466 sc->ctts_data = ctts_data;
2467 sc->ctts_data[sc->ctts_count].count = sc->sample_count;
2468 sc->ctts_data[sc->ctts_count].duration = 0;
2471 if ((uint64_t)entries+sc->ctts_count >= UINT_MAX/sizeof(*sc->ctts_data))
2472 return AVERROR_INVALIDDATA;
2473 ctts_data = av_realloc(sc->ctts_data,
2474 (entries+sc->ctts_count)*sizeof(*sc->ctts_data));
2476 return AVERROR(ENOMEM);
2477 sc->ctts_data = ctts_data;
2479 if (flags & MOV_TRUN_DATA_OFFSET) data_offset = avio_rb32(pb);
2480 if (flags & MOV_TRUN_FIRST_SAMPLE_FLAGS) first_sample_flags = avio_rb32(pb);
2481 dts = sc->track_end - sc->time_offset;
2482 offset = frag->base_data_offset + data_offset;
2484 av_dlog(c->fc, "first sample flags 0x%x\n", first_sample_flags);
2485 for (i = 0; i < entries; i++) {
2486 unsigned sample_size = frag->size;
2487 int sample_flags = i ? frag->flags : first_sample_flags;
2488 unsigned sample_duration = frag->duration;
2491 if (flags & MOV_TRUN_SAMPLE_DURATION) sample_duration = avio_rb32(pb);
2492 if (flags & MOV_TRUN_SAMPLE_SIZE) sample_size = avio_rb32(pb);
2493 if (flags & MOV_TRUN_SAMPLE_FLAGS) sample_flags = avio_rb32(pb);
2494 sc->ctts_data[sc->ctts_count].count = 1;
2495 sc->ctts_data[sc->ctts_count].duration = (flags & MOV_TRUN_SAMPLE_CTS) ?
2498 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
2500 else if (!found_keyframe)
2501 keyframe = found_keyframe =
2502 !(sample_flags & (MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC |
2503 MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES));
2506 av_add_index_entry(st, offset, dts, sample_size, distance,
2507 keyframe ? AVINDEX_KEYFRAME : 0);
2508 av_dlog(c->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
2509 "size %d, distance %d, keyframe %d\n", st->index, sc->sample_count+i,
2510 offset, dts, sample_size, distance, keyframe);
2512 dts += sample_duration;
2513 offset += sample_size;
2514 sc->data_size += sample_size;
2516 frag->moof_offset = offset;
2517 st->duration = sc->track_end = dts + sc->time_offset;
2521 /* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
2522 /* like the files created with Adobe Premiere 5.0, for samples see */
2523 /* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
2524 static int mov_read_wide(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2529 return 0; /* continue */
2530 if (avio_rb32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
2531 avio_skip(pb, atom.size - 4);
2534 atom.type = avio_rl32(pb);
2536 if (atom.type != MKTAG('m','d','a','t')) {
2537 avio_skip(pb, atom.size);
2540 err = mov_read_mdat(c, pb, atom);
2544 static int mov_read_cmov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2549 uint8_t *moov_data; /* uncompressed data */
2550 long cmov_len, moov_len;
2553 avio_rb32(pb); /* dcom atom */
2554 if (avio_rl32(pb) != MKTAG('d','c','o','m'))
2555 return AVERROR_INVALIDDATA;
2556 if (avio_rl32(pb) != MKTAG('z','l','i','b')) {
2557 av_log(c->fc, AV_LOG_ERROR, "unknown compression for cmov atom !");
2558 return AVERROR_INVALIDDATA;
2560 avio_rb32(pb); /* cmvd atom */
2561 if (avio_rl32(pb) != MKTAG('c','m','v','d'))
2562 return AVERROR_INVALIDDATA;
2563 moov_len = avio_rb32(pb); /* uncompressed size */
2564 cmov_len = atom.size - 6 * 4;
2566 cmov_data = av_malloc(cmov_len);
2568 return AVERROR(ENOMEM);
2569 moov_data = av_malloc(moov_len);
2572 return AVERROR(ENOMEM);
2574 avio_read(pb, cmov_data, cmov_len);
2575 if (uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
2576 goto free_and_return;
2577 if (ffio_init_context(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
2578 goto free_and_return;
2579 atom.type = MKTAG('m','o','o','v');
2580 atom.size = moov_len;
2581 ret = mov_read_default(c, &ctx, atom);
2587 av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
2588 return AVERROR(ENOSYS);
2592 /* edit list atom */
2593 static int mov_read_elst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2595 MOVStreamContext *sc;
2596 int i, edit_count, version, edit_start_index = 0;
2598 if (c->fc->nb_streams < 1)
2600 sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
2602 version = avio_r8(pb); /* version */
2603 avio_rb24(pb); /* flags */
2604 edit_count = avio_rb32(pb); /* entries */
2606 if ((uint64_t)edit_count*12+8 > atom.size)
2607 return AVERROR_INVALIDDATA;
2609 for (i=0; i<edit_count; i++){
2613 duration = avio_rb64(pb);
2614 time = avio_rb64(pb);
2616 duration = avio_rb32(pb); /* segment duration */
2617 time = (int32_t)avio_rb32(pb); /* media time */
2619 avio_rb32(pb); /* Media rate */
2620 if (i == 0 && time == -1) {
2621 sc->empty_duration = duration;
2622 edit_start_index = 1;
2623 } else if (i == edit_start_index && time >= 0)
2624 sc->start_time = time;
2628 av_log(c->fc, AV_LOG_WARNING, "multiple edit list entries, "
2629 "a/v desync might occur, patch welcome\n");
2631 av_dlog(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, edit_count);
2635 static int mov_read_chan2(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2640 ff_mov_read_chan(c->fc, atom.size - 4, c->fc->streams[0]->codec);
2644 static int mov_read_tref(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2647 MOVStreamContext *sc;
2649 if (c->fc->nb_streams < 1)
2650 return AVERROR_INVALIDDATA;
2651 sc = c->fc->streams[c->fc->nb_streams - 1]->priv_data;
2653 size = avio_rb32(pb);
2657 sc->trefs_count = (size - 4) / 8;
2658 sc->trefs = av_malloc(sc->trefs_count * sizeof(*sc->trefs));
2660 return AVERROR(ENOMEM);
2662 sc->tref_type = avio_rl32(pb);
2663 for (i = 0; i < sc->trefs_count; i++)
2664 sc->trefs[i] = avio_rb32(pb);
2668 static const MOVParseTableEntry mov_default_parse_table[] = {
2669 { MKTAG('A','P','R','G'), mov_read_aprg },
2670 { MKTAG('a','v','s','s'), mov_read_avss },
2671 { MKTAG('c','h','p','l'), mov_read_chpl },
2672 { MKTAG('c','o','6','4'), mov_read_stco },
2673 { MKTAG('c','t','t','s'), mov_read_ctts }, /* composition time to sample */
2674 { MKTAG('d','i','n','f'), mov_read_default },
2675 { MKTAG('d','r','e','f'), mov_read_dref },
2676 { MKTAG('e','d','t','s'), mov_read_default },
2677 { MKTAG('e','l','s','t'), mov_read_elst },
2678 { MKTAG('e','n','d','a'), mov_read_enda },
2679 { MKTAG('f','i','e','l'), mov_read_fiel },
2680 { MKTAG('f','t','y','p'), mov_read_ftyp },
2681 { MKTAG('g','l','b','l'), mov_read_glbl },
2682 { MKTAG('h','d','l','r'), mov_read_hdlr },
2683 { MKTAG('i','l','s','t'), mov_read_ilst },
2684 { MKTAG('j','p','2','h'), mov_read_jp2h },
2685 { MKTAG('m','d','a','t'), mov_read_mdat },
2686 { MKTAG('m','d','h','d'), mov_read_mdhd },
2687 { MKTAG('m','d','i','a'), mov_read_default },
2688 { MKTAG('m','e','t','a'), mov_read_meta },
2689 { MKTAG('m','i','n','f'), mov_read_default },
2690 { MKTAG('m','o','o','f'), mov_read_moof },
2691 { MKTAG('m','o','o','v'), mov_read_moov },
2692 { MKTAG('m','v','e','x'), mov_read_default },
2693 { MKTAG('m','v','h','d'), mov_read_mvhd },
2694 { MKTAG('S','M','I',' '), mov_read_smi }, /* Sorenson extension ??? */
2695 { MKTAG('a','l','a','c'), mov_read_alac }, /* alac specific atom */
2696 { MKTAG('a','v','c','C'), mov_read_glbl },
2697 { MKTAG('p','a','s','p'), mov_read_pasp },
2698 { MKTAG('s','t','b','l'), mov_read_default },
2699 { MKTAG('s','t','c','o'), mov_read_stco },
2700 { MKTAG('s','t','p','s'), mov_read_stps },
2701 { MKTAG('s','t','r','f'), mov_read_strf },
2702 { MKTAG('s','t','s','c'), mov_read_stsc },
2703 { MKTAG('s','t','s','d'), mov_read_stsd }, /* sample description */
2704 { MKTAG('s','t','s','s'), mov_read_stss }, /* sync sample */
2705 { MKTAG('s','t','s','z'), mov_read_stsz }, /* sample size */
2706 { MKTAG('s','t','t','s'), mov_read_stts },
2707 { MKTAG('s','t','z','2'), mov_read_stsz }, /* compact sample size */
2708 { MKTAG('t','k','h','d'), mov_read_tkhd }, /* track header */
2709 { MKTAG('t','f','h','d'), mov_read_tfhd }, /* track fragment header */
2710 { MKTAG('t','r','a','k'), mov_read_trak },
2711 { MKTAG('t','r','a','f'), mov_read_default },
2712 { MKTAG('t','r','e','f'), mov_read_tref },
2713 { MKTAG('c','h','a','p'), mov_read_chap },
2714 { MKTAG('t','r','e','x'), mov_read_trex },
2715 { MKTAG('t','r','u','n'), mov_read_trun },
2716 { MKTAG('u','d','t','a'), mov_read_default },
2717 { MKTAG('w','a','v','e'), mov_read_wave },
2718 { MKTAG('e','s','d','s'), mov_read_esds },
2719 { MKTAG('d','a','c','3'), mov_read_dac3 }, /* AC-3 info */
2720 { MKTAG('d','e','c','3'), mov_read_dec3 }, /* EAC-3 info */
2721 { MKTAG('w','i','d','e'), mov_read_wide }, /* place holder */
2722 { MKTAG('w','f','e','x'), mov_read_wfex },
2723 { MKTAG('c','m','o','v'), mov_read_cmov },
2724 { MKTAG('c','h','a','n'), mov_read_chan }, /* channel layout */
2725 { MKTAG('d','v','c','1'), mov_read_dvc1 },
2729 static int mov_probe(AVProbeData *p)
2731 unsigned int offset;
2735 /* check file header */
2738 /* ignore invalid offset */
2739 if ((offset + 8) > (unsigned int)p->buf_size)
2741 tag = AV_RL32(p->buf + offset + 4);
2743 /* check for obvious tags */
2744 case MKTAG('j','P',' ',' '): /* jpeg 2000 signature */
2745 case MKTAG('m','o','o','v'):
2746 case MKTAG('m','d','a','t'):
2747 case MKTAG('p','n','o','t'): /* detect movs with preview pics like ew.mov and april.mov */
2748 case MKTAG('u','d','t','a'): /* Packet Video PVAuthor adds this and a lot of more junk */
2749 case MKTAG('f','t','y','p'):
2750 return AVPROBE_SCORE_MAX;
2751 /* those are more common words, so rate then a bit less */
2752 case MKTAG('e','d','i','w'): /* xdcam files have reverted first tags */
2753 case MKTAG('w','i','d','e'):
2754 case MKTAG('f','r','e','e'):
2755 case MKTAG('j','u','n','k'):
2756 case MKTAG('p','i','c','t'):
2757 return AVPROBE_SCORE_MAX - 5;
2758 case MKTAG(0x82,0x82,0x7f,0x7d):
2759 case MKTAG('s','k','i','p'):
2760 case MKTAG('u','u','i','d'):
2761 case MKTAG('p','r','f','l'):
2762 offset = AV_RB32(p->buf+offset) + offset;
2763 /* if we only find those cause probedata is too small at least rate them */
2764 score = AVPROBE_SCORE_MAX - 50;
2767 /* unrecognized tag */
2773 // must be done after parsing all trak because there's no order requirement
2774 static void mov_read_chapters(AVFormatContext *s)
2776 MOVContext *mov = s->priv_data;
2777 AVStream *st = NULL;
2778 MOVStreamContext *sc;
2782 for (i = 0; i < s->nb_streams; i++)
2783 if (s->streams[i]->id == mov->chapter_track) {
2788 av_log(s, AV_LOG_ERROR, "Referenced QT chapter track not found\n");
2792 st->discard = AVDISCARD_ALL;
2794 cur_pos = avio_tell(sc->pb);
2796 for (i = 0; i < st->nb_index_entries; i++) {
2797 AVIndexEntry *sample = &st->index_entries[i];
2798 int64_t end = i+1 < st->nb_index_entries ? st->index_entries[i+1].timestamp : st->duration;
2803 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
2804 av_log(s, AV_LOG_ERROR, "Chapter %d not found in file\n", i);
2808 // the first two bytes are the length of the title
2809 len = avio_rb16(sc->pb);
2810 if (len > sample->size-2)
2812 title_len = 2*len + 1;
2813 if (!(title = av_mallocz(title_len)))
2816 // The samples could theoretically be in any encoding if there's an encd
2817 // atom following, but in practice are only utf-8 or utf-16, distinguished
2818 // instead by the presence of a BOM
2822 ch = avio_rb16(sc->pb);
2824 avio_get_str16be(sc->pb, len, title, title_len);
2825 else if (ch == 0xfffe)
2826 avio_get_str16le(sc->pb, len, title, title_len);
2829 if (len == 1 || len == 2)
2832 avio_get_str(sc->pb, INT_MAX, title + 2, len - 1);
2836 avpriv_new_chapter(s, i, st->time_base, sample->timestamp, end, title);
2840 avio_seek(sc->pb, cur_pos, SEEK_SET);
2843 static int parse_timecode_in_framenum_format(AVFormatContext *s, AVStream *st,
2844 uint32_t value, int flags)
2847 char buf[AV_TIMECODE_STR_SIZE];
2848 AVRational rate = {st->codec->time_base.den,
2849 st->codec->time_base.num};
2850 int ret = av_timecode_init(&tc, rate, flags, 0, s);
2853 av_dict_set(&st->metadata, "timecode",
2854 av_timecode_make_string(&tc, buf, value), 0);
2858 static int mov_read_timecode_track(AVFormatContext *s, AVStream *st)
2860 MOVStreamContext *sc = st->priv_data;
2862 int64_t cur_pos = avio_tell(sc->pb);
2865 if (!st->nb_index_entries)
2868 avio_seek(sc->pb, st->index_entries->pos, SEEK_SET);
2869 value = avio_rb32(s->pb);
2871 if (sc->tmcd_flags & 0x0001) flags |= AV_TIMECODE_FLAG_DROPFRAME;
2872 if (sc->tmcd_flags & 0x0002) flags |= AV_TIMECODE_FLAG_24HOURSMAX;
2873 if (sc->tmcd_flags & 0x0004) flags |= AV_TIMECODE_FLAG_ALLOWNEGATIVE;
2875 /* Assume Counter flag is set to 1 in tmcd track (even though it is likely
2876 * not the case) and thus assume "frame number format" instead of QT one.
2877 * No sample with tmcd track can be found with a QT timecode at the moment,
2878 * despite what the tmcd track "suggests" (Counter flag set to 0 means QT
2880 parse_timecode_in_framenum_format(s, st, value, flags);
2882 avio_seek(sc->pb, cur_pos, SEEK_SET);
2886 static int mov_read_close(AVFormatContext *s)
2888 MOVContext *mov = s->priv_data;
2891 for (i = 0; i < s->nb_streams; i++) {
2892 AVStream *st = s->streams[i];
2893 MOVStreamContext *sc = st->priv_data;
2895 av_freep(&sc->ctts_data);
2896 for (j = 0; j < sc->drefs_count; j++) {
2897 av_freep(&sc->drefs[j].path);
2898 av_freep(&sc->drefs[j].dir);
2900 av_freep(&sc->drefs);
2901 av_freep(&sc->trefs);
2902 if (sc->pb && sc->pb != s->pb)
2905 av_freep(&sc->chunk_offsets);
2906 av_freep(&sc->keyframes);
2907 av_freep(&sc->sample_sizes);
2908 av_freep(&sc->stps_data);
2909 av_freep(&sc->stsc_data);
2910 av_freep(&sc->stts_data);
2913 if (mov->dv_demux) {
2914 for (i = 0; i < mov->dv_fctx->nb_streams; i++) {
2915 av_freep(&mov->dv_fctx->streams[i]->codec);
2916 av_freep(&mov->dv_fctx->streams[i]);
2918 av_freep(&mov->dv_fctx);
2919 av_freep(&mov->dv_demux);
2922 av_freep(&mov->trex_data);
2927 static int tmcd_is_referenced(AVFormatContext *s, int tmcd_id)
2931 for (i = 0; i < s->nb_streams; i++) {
2932 AVStream *st = s->streams[i];
2933 MOVStreamContext *sc = st->priv_data;
2935 if (s->streams[i]->codec->codec_type != AVMEDIA_TYPE_VIDEO)
2937 for (j = 0; j < sc->trefs_count; j++)
2938 if (tmcd_id == sc->trefs[j])
2944 /* look for a tmcd track not referenced by any video track, and export it globally */
2945 static void export_orphan_timecode(AVFormatContext *s)
2949 for (i = 0; i < s->nb_streams; i++) {
2950 AVStream *st = s->streams[i];
2952 if (st->codec->codec_tag == MKTAG('t','m','c','d') &&
2953 !tmcd_is_referenced(s, i + 1)) {
2954 AVDictionaryEntry *tcr = av_dict_get(st->metadata, "timecode", NULL, 0);
2956 av_dict_set(&s->metadata, "timecode", tcr->value, 0);
2963 static int mov_read_header(AVFormatContext *s)
2965 MOVContext *mov = s->priv_data;
2966 AVIOContext *pb = s->pb;
2968 MOVAtom atom = { AV_RL32("root") };
2971 /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
2973 atom.size = avio_size(pb);
2975 atom.size = INT64_MAX;
2977 /* check MOV header */
2978 if ((err = mov_read_default(mov, pb, atom)) < 0) {
2979 av_log(s, AV_LOG_ERROR, "error reading header: %d\n", err);
2983 if (!mov->found_moov) {
2984 av_log(s, AV_LOG_ERROR, "moov atom not found\n");
2986 return AVERROR_INVALIDDATA;
2988 av_dlog(mov->fc, "on_parse_exit_offset=%"PRId64"\n", avio_tell(pb));
2991 if (mov->chapter_track > 0)
2992 mov_read_chapters(s);
2993 for (i = 0; i < s->nb_streams; i++)
2994 if (s->streams[i]->codec->codec_tag == AV_RL32("tmcd"))
2995 mov_read_timecode_track(s, s->streams[i]);
2998 /* copy timecode metadata from tmcd tracks to the related video streams */
2999 for (i = 0; i < s->nb_streams; i++) {
3000 AVStream *st = s->streams[i];
3001 MOVStreamContext *sc = st->priv_data;
3002 if (sc->tref_type == AV_RL32("tmcd") && sc->trefs_count) {
3003 AVDictionaryEntry *tcr;
3004 int tmcd_st_id = sc->trefs[0] - 1;
3006 if (tmcd_st_id < 0 || tmcd_st_id >= s->nb_streams)
3008 tcr = av_dict_get(s->streams[tmcd_st_id]->metadata, "timecode", NULL, 0);
3010 av_dict_set(&st->metadata, "timecode", tcr->value, 0);
3013 export_orphan_timecode(s);
3015 if (mov->trex_data) {
3016 for (i = 0; i < s->nb_streams; i++) {
3017 AVStream *st = s->streams[i];
3018 MOVStreamContext *sc = st->priv_data;
3020 st->codec->bit_rate = sc->data_size * 8 * sc->time_scale / st->duration;
3027 static AVIndexEntry *mov_find_next_sample(AVFormatContext *s, AVStream **st)
3029 AVIndexEntry *sample = NULL;
3030 int64_t best_dts = INT64_MAX;
3032 for (i = 0; i < s->nb_streams; i++) {
3033 AVStream *avst = s->streams[i];
3034 MOVStreamContext *msc = avst->priv_data;
3035 if (msc->pb && msc->current_sample < avst->nb_index_entries) {
3036 AVIndexEntry *current_sample = &avst->index_entries[msc->current_sample];
3037 int64_t dts = av_rescale(current_sample->timestamp, AV_TIME_BASE, msc->time_scale);
3038 av_dlog(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
3039 if (!sample || (!s->pb->seekable && current_sample->pos < sample->pos) ||
3041 ((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb &&
3042 ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
3043 (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) {
3044 sample = current_sample;
3053 static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
3055 MOVContext *mov = s->priv_data;
3056 MOVStreamContext *sc;
3057 AVIndexEntry *sample;
3058 AVStream *st = NULL;
3062 sample = mov_find_next_sample(s, &st);
3064 mov->found_mdat = 0;
3065 if (!mov->next_root_atom)
3067 avio_seek(s->pb, mov->next_root_atom, SEEK_SET);
3068 mov->next_root_atom = 0;
3069 if (mov_read_default(mov, s->pb, (MOVAtom){ AV_RL32("root"), INT64_MAX }) < 0 ||
3072 av_dlog(s, "read fragments, offset 0x%"PRIx64"\n", avio_tell(s->pb));
3076 /* must be done just before reading, to avoid infinite loop on sample */
3077 sc->current_sample++;
3079 if (st->discard != AVDISCARD_ALL) {
3080 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
3081 av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
3082 sc->ffindex, sample->pos);
3083 return AVERROR_INVALIDDATA;
3085 ret = av_get_packet(sc->pb, pkt, sample->size);
3088 if (sc->has_palette) {
3091 pal = av_packet_new_side_data(pkt, AV_PKT_DATA_PALETTE, AVPALETTE_SIZE);
3093 av_log(mov->fc, AV_LOG_ERROR, "Cannot append palette to packet\n");
3095 memcpy(pal, sc->palette, AVPALETTE_SIZE);
3096 sc->has_palette = 0;
3099 #if CONFIG_DV_DEMUXER
3100 if (mov->dv_demux && sc->dv_audio_container) {
3101 avpriv_dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size, pkt->pos);
3104 ret = avpriv_dv_get_packet(mov->dv_demux, pkt);
3111 pkt->stream_index = sc->ffindex;
3112 pkt->dts = sample->timestamp;
3113 if (sc->ctts_data && sc->ctts_index < sc->ctts_count) {
3114 pkt->pts = pkt->dts + sc->dts_shift + sc->ctts_data[sc->ctts_index].duration;
3115 /* update ctts context */
3117 if (sc->ctts_index < sc->ctts_count &&
3118 sc->ctts_data[sc->ctts_index].count == sc->ctts_sample) {
3120 sc->ctts_sample = 0;
3123 pkt->dts = AV_NOPTS_VALUE;
3125 int64_t next_dts = (sc->current_sample < st->nb_index_entries) ?
3126 st->index_entries[sc->current_sample].timestamp : st->duration;
3127 pkt->duration = next_dts - pkt->dts;
3128 pkt->pts = pkt->dts;
3130 if (st->discard == AVDISCARD_ALL)
3132 pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? AV_PKT_FLAG_KEY : 0;
3133 pkt->pos = sample->pos;
3134 av_dlog(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n",
3135 pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
3139 static int mov_seek_stream(AVFormatContext *s, AVStream *st, int64_t timestamp, int flags)
3141 MOVStreamContext *sc = st->priv_data;
3142 int sample, time_sample;
3145 sample = av_index_search_timestamp(st, timestamp, flags);
3146 av_dlog(s, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
3147 if (sample < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
3149 if (sample < 0) /* not sure what to do */
3150 return AVERROR_INVALIDDATA;
3151 sc->current_sample = sample;
3152 av_dlog(s, "stream %d, found sample %d\n", st->index, sc->current_sample);
3153 /* adjust ctts index */
3154 if (sc->ctts_data) {
3156 for (i = 0; i < sc->ctts_count; i++) {
3157 int next = time_sample + sc->ctts_data[i].count;
3158 if (next > sc->current_sample) {
3160 sc->ctts_sample = sc->current_sample - time_sample;
3169 static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
3172 int64_t seek_timestamp, timestamp;
3176 if (stream_index >= s->nb_streams)
3177 return AVERROR_INVALIDDATA;
3178 if (sample_time < 0)
3181 st = s->streams[stream_index];
3182 sample = mov_seek_stream(s, st, sample_time, flags);
3186 /* adjust seek timestamp to found sample timestamp */
3187 seek_timestamp = st->index_entries[sample].timestamp;
3189 for (i = 0; i < s->nb_streams; i++) {
3191 if (stream_index == i)
3194 timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
3195 mov_seek_stream(s, st, timestamp, flags);
3200 static const AVOption options[] = {
3201 {"use_absolute_path",
3202 "allow using absolute path when opening alias, this is a possible security issue",
3203 offsetof(MOVContext, use_absolute_path), FF_OPT_TYPE_INT, {.dbl = 0},
3204 0, 1, AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_DECODING_PARAM},
3208 static const AVClass class = {
3209 .class_name = "mov,mp4,m4a,3gp,3g2,mj2",
3210 .item_name = av_default_item_name,
3212 .version = LIBAVUTIL_VERSION_INT,
3215 AVInputFormat ff_mov_demuxer = {
3216 .name = "mov,mp4,m4a,3gp,3g2,mj2",
3217 .long_name = NULL_IF_CONFIG_SMALL("QuickTime/MPEG-4/Motion JPEG 2000 format"),
3218 .priv_data_size = sizeof(MOVContext),
3219 .read_probe = mov_probe,
3220 .read_header = mov_read_header,
3221 .read_packet = mov_read_packet,
3222 .read_close = mov_read_close,
3223 .read_seek = mov_read_seek,
3224 .priv_class = &class,