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 int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom);
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 int mov_read_custom_metadata(MOVContext *c, AVIOContext *pb, MOVAtom atom)
136 char key[1024]={0}, data[1024]={0};
139 MOVStreamContext *sc;
141 if (c->fc->nb_streams < 1)
143 st = c->fc->streams[c->fc->nb_streams-1];
146 if (atom.size <= 8) return 0;
148 for (i = 0; i < 3; i++) { // Parse up to three sub-atoms looking for name and data.
149 int data_size = avio_rb32(pb);
150 int tag = avio_rl32(pb);
151 int str_size = 0, skip_size = 0;
155 case MKTAG('n','a','m','e'):
156 avio_rb32(pb); // version/flags
157 str_size = skip_size = data_size - 12;
161 case MKTAG('d','a','t','a'):
162 avio_rb32(pb); // version/flags
163 avio_rb32(pb); // reserved (zero)
164 str_size = skip_size = data_size - 16;
169 skip_size = data_size - 8;
175 str_size = FFMIN3(sizeof(data)-1, str_size, atom.size);
176 avio_read(pb, target, str_size);
177 target[str_size] = 0;
179 atom.size -= skip_size;
181 // If we didn't read the full data chunk for the sub-atom, skip to the end of it.
182 if (skip_size > str_size) avio_skip(pb, skip_size - str_size);
186 if (strcmp(key, "iTunSMPB") == 0) {
187 int priming, remainder, samples;
188 if(sscanf(data, "%*X %X %X %X", &priming, &remainder, &samples) == 3){
189 if(priming>0 && priming<16384)
190 sc->start_pad = priming;
194 if (strcmp(key, "cdec") == 0) {
195 // av_dict_set(&st->metadata, key, data, 0);
202 static const uint32_t mac_to_unicode[128] = {
203 0x00C4,0x00C5,0x00C7,0x00C9,0x00D1,0x00D6,0x00DC,0x00E1,
204 0x00E0,0x00E2,0x00E4,0x00E3,0x00E5,0x00E7,0x00E9,0x00E8,
205 0x00EA,0x00EB,0x00ED,0x00EC,0x00EE,0x00EF,0x00F1,0x00F3,
206 0x00F2,0x00F4,0x00F6,0x00F5,0x00FA,0x00F9,0x00FB,0x00FC,
207 0x2020,0x00B0,0x00A2,0x00A3,0x00A7,0x2022,0x00B6,0x00DF,
208 0x00AE,0x00A9,0x2122,0x00B4,0x00A8,0x2260,0x00C6,0x00D8,
209 0x221E,0x00B1,0x2264,0x2265,0x00A5,0x00B5,0x2202,0x2211,
210 0x220F,0x03C0,0x222B,0x00AA,0x00BA,0x03A9,0x00E6,0x00F8,
211 0x00BF,0x00A1,0x00AC,0x221A,0x0192,0x2248,0x2206,0x00AB,
212 0x00BB,0x2026,0x00A0,0x00C0,0x00C3,0x00D5,0x0152,0x0153,
213 0x2013,0x2014,0x201C,0x201D,0x2018,0x2019,0x00F7,0x25CA,
214 0x00FF,0x0178,0x2044,0x20AC,0x2039,0x203A,0xFB01,0xFB02,
215 0x2021,0x00B7,0x201A,0x201E,0x2030,0x00C2,0x00CA,0x00C1,
216 0x00CB,0x00C8,0x00CD,0x00CE,0x00CF,0x00CC,0x00D3,0x00D4,
217 0xF8FF,0x00D2,0x00DA,0x00DB,0x00D9,0x0131,0x02C6,0x02DC,
218 0x00AF,0x02D8,0x02D9,0x02DA,0x00B8,0x02DD,0x02DB,0x02C7,
221 static int mov_read_mac_string(MOVContext *c, AVIOContext *pb, int len,
222 char *dst, int dstlen)
225 char *end = dst+dstlen-1;
228 for (i = 0; i < len; i++) {
229 uint8_t t, c = avio_r8(pb);
230 if (c < 0x80 && p < end)
233 PUT_UTF8(mac_to_unicode[c-0x80], t, if (p < end) *p++ = t;);
239 static int mov_read_covr(MOVContext *c, AVIOContext *pb, int type, int len)
243 MOVStreamContext *sc;
248 case 0xd: id = AV_CODEC_ID_MJPEG; break;
249 case 0xe: id = AV_CODEC_ID_PNG; break;
250 case 0x1b: id = AV_CODEC_ID_BMP; break;
252 av_log(c->fc, AV_LOG_WARNING, "Unknown cover type: 0x%x.\n", type);
257 st = avformat_new_stream(c->fc, NULL);
259 return AVERROR(ENOMEM);
260 sc = av_mallocz(sizeof(*sc));
262 return AVERROR(ENOMEM);
265 ret = av_get_packet(pb, &pkt, len);
269 st->disposition |= AV_DISPOSITION_ATTACHED_PIC;
271 st->attached_pic = pkt;
272 st->attached_pic.stream_index = st->index;
273 st->attached_pic.flags |= AV_PKT_FLAG_KEY;
275 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
276 st->codec->codec_id = id;
281 static int mov_read_udta_string(MOVContext *c, AVIOContext *pb, MOVAtom atom)
283 #ifdef MOV_EXPORT_ALL_METADATA
286 char str[1024], key2[16], language[4] = {0};
287 const char *key = NULL;
288 uint16_t langcode = 0;
289 uint32_t data_type = 0, str_size;
290 int (*parse)(MOVContext*, AVIOContext*, unsigned, const char*) = NULL;
292 if (c->itunes_metadata && atom.type == MKTAG('-','-','-','-'))
293 return mov_read_custom_metadata(c, pb, atom);
296 case MKTAG(0xa9,'n','a','m'): key = "title"; break;
297 case MKTAG(0xa9,'a','u','t'):
298 case MKTAG(0xa9,'A','R','T'): key = "artist"; break;
299 case MKTAG( 'a','A','R','T'): key = "album_artist"; break;
300 case MKTAG(0xa9,'w','r','t'): key = "composer"; break;
301 case MKTAG( 'c','p','r','t'):
302 case MKTAG(0xa9,'c','p','y'): key = "copyright"; break;
303 case MKTAG(0xa9,'g','r','p'): key = "grouping"; break;
304 case MKTAG(0xa9,'l','y','r'): key = "lyrics"; break;
305 case MKTAG(0xa9,'c','m','t'):
306 case MKTAG(0xa9,'i','n','f'): key = "comment"; break;
307 case MKTAG(0xa9,'a','l','b'): key = "album"; break;
308 case MKTAG(0xa9,'d','a','y'): key = "date"; break;
309 case MKTAG(0xa9,'g','e','n'): key = "genre"; break;
310 case MKTAG( 'g','n','r','e'): key = "genre";
311 parse = mov_metadata_gnre; break;
312 case MKTAG(0xa9,'t','o','o'):
313 case MKTAG(0xa9,'s','w','r'): key = "encoder"; break;
314 case MKTAG(0xa9,'e','n','c'): key = "encoder"; break;
315 case MKTAG( 'd','e','s','c'): key = "description";break;
316 case MKTAG( 'l','d','e','s'): key = "synopsis"; break;
317 case MKTAG( 't','v','s','h'): key = "show"; break;
318 case MKTAG( 't','v','e','n'): key = "episode_id";break;
319 case MKTAG( 't','v','n','n'): key = "network"; break;
320 case MKTAG( 't','r','k','n'): key = "track";
321 parse = mov_metadata_track_or_disc_number; break;
322 case MKTAG( 'd','i','s','k'): key = "disc";
323 parse = mov_metadata_track_or_disc_number; break;
324 case MKTAG( 't','v','e','s'): key = "episode_sort";
325 parse = mov_metadata_int8_bypass_padding; break;
326 case MKTAG( 't','v','s','n'): key = "season_number";
327 parse = mov_metadata_int8_bypass_padding; break;
328 case MKTAG( 's','t','i','k'): key = "media_type";
329 parse = mov_metadata_int8_no_padding; break;
330 case MKTAG( 'h','d','v','d'): key = "hd_video";
331 parse = mov_metadata_int8_no_padding; break;
332 case MKTAG( 'p','g','a','p'): key = "gapless_playback";
333 parse = mov_metadata_int8_no_padding; break;
336 if (c->itunes_metadata && atom.size > 8) {
337 int data_size = avio_rb32(pb);
338 int tag = avio_rl32(pb);
339 if (tag == MKTAG('d','a','t','a')) {
340 data_type = avio_rb32(pb); // type
341 avio_rb32(pb); // unknown
342 str_size = data_size - 16;
345 if (atom.type == MKTAG('c', 'o', 'v', 'r')) {
346 int ret = mov_read_covr(c, pb, data_type, str_size);
348 av_log(c->fc, AV_LOG_ERROR, "Error parsing cover art.\n");
353 } else if (atom.size > 4 && key && !c->itunes_metadata) {
354 str_size = avio_rb16(pb); // string length
355 langcode = avio_rb16(pb);
356 ff_mov_lang_to_iso639(langcode, language);
359 str_size = atom.size;
361 #ifdef MOV_EXPORT_ALL_METADATA
363 snprintf(tmp_key, 5, "%.4s", (char*)&atom.type);
371 return AVERROR_INVALIDDATA;
373 str_size = FFMIN3(sizeof(str)-1, str_size, atom.size);
376 parse(c, pb, str_size, key);
378 if (data_type == 3 || (data_type == 0 && (langcode < 0x400 || langcode == 0x7fff))) { // MAC Encoded
379 mov_read_mac_string(c, pb, str_size, str, sizeof(str));
381 avio_read(pb, str, str_size);
384 av_dict_set(&c->fc->metadata, key, str, 0);
385 if (*language && strcmp(language, "und")) {
386 snprintf(key2, sizeof(key2), "%s-%s", key, language);
387 av_dict_set(&c->fc->metadata, key2, str, 0);
390 av_dlog(c->fc, "lang \"%3s\" ", language);
391 av_dlog(c->fc, "tag \"%s\" value \"%s\" atom \"%.4s\" %d %"PRId64"\n",
392 key, str, (char*)&atom.type, str_size, atom.size);
397 static int mov_read_chpl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
400 int i, nb_chapters, str_len, version;
403 if ((atom.size -= 5) < 0)
406 version = avio_r8(pb);
409 avio_rb32(pb); // ???
410 nb_chapters = avio_r8(pb);
412 for (i = 0; i < nb_chapters; i++) {
416 start = avio_rb64(pb);
417 str_len = avio_r8(pb);
419 if ((atom.size -= 9+str_len) < 0)
422 avio_read(pb, str, str_len);
424 avpriv_new_chapter(c->fc, i, (AVRational){1,10000000}, start, AV_NOPTS_VALUE, str);
429 static int mov_read_dref(MOVContext *c, AVIOContext *pb, MOVAtom atom)
432 MOVStreamContext *sc;
435 if (c->fc->nb_streams < 1)
437 st = c->fc->streams[c->fc->nb_streams-1];
440 avio_rb32(pb); // version + flags
441 entries = avio_rb32(pb);
442 if (entries >= UINT_MAX / sizeof(*sc->drefs))
443 return AVERROR_INVALIDDATA;
446 sc->drefs = av_mallocz(entries * sizeof(*sc->drefs));
448 return AVERROR(ENOMEM);
449 sc->drefs_count = entries;
451 for (i = 0; i < sc->drefs_count; i++) {
452 MOVDref *dref = &sc->drefs[i];
453 uint32_t size = avio_rb32(pb);
454 int64_t next = avio_tell(pb) + size - 4;
457 return AVERROR_INVALIDDATA;
459 dref->type = avio_rl32(pb);
460 avio_rb32(pb); // version + flags
461 av_dlog(c->fc, "type %.4s size %d\n", (char*)&dref->type, size);
463 if (dref->type == MKTAG('a','l','i','s') && size > 150) {
464 /* macintosh alias record */
465 uint16_t volume_len, len;
470 volume_len = avio_r8(pb);
471 volume_len = FFMIN(volume_len, 27);
472 avio_read(pb, dref->volume, 27);
473 dref->volume[volume_len] = 0;
474 av_log(c->fc, AV_LOG_DEBUG, "volume %s, len %d\n", dref->volume, volume_len);
479 len = FFMIN(len, 63);
480 avio_read(pb, dref->filename, 63);
481 dref->filename[len] = 0;
482 av_log(c->fc, AV_LOG_DEBUG, "filename %s, len %d\n", dref->filename, len);
486 /* read next level up_from_alias/down_to_target */
487 dref->nlvl_from = avio_rb16(pb);
488 dref->nlvl_to = avio_rb16(pb);
489 av_log(c->fc, AV_LOG_DEBUG, "nlvl from %d, nlvl to %d\n",
490 dref->nlvl_from, dref->nlvl_to);
494 for (type = 0; type != -1 && avio_tell(pb) < next; ) {
497 type = avio_rb16(pb);
499 av_log(c->fc, AV_LOG_DEBUG, "type %d, len %d\n", type, len);
502 if (type == 2) { // absolute path
504 dref->path = av_mallocz(len+1);
506 return AVERROR(ENOMEM);
507 avio_read(pb, dref->path, len);
508 if (len > volume_len && !strncmp(dref->path, dref->volume, volume_len)) {
510 memmove(dref->path, dref->path+volume_len, len);
513 for (j = 0; j < len; j++)
514 if (dref->path[j] == ':')
516 av_log(c->fc, AV_LOG_DEBUG, "path %s\n", dref->path);
517 } else if (type == 0) { // directory name
519 dref->dir = av_malloc(len+1);
521 return AVERROR(ENOMEM);
522 avio_read(pb, dref->dir, len);
524 for (j = 0; j < len; j++)
525 if (dref->dir[j] == ':')
527 av_log(c->fc, AV_LOG_DEBUG, "dir %s\n", dref->dir);
532 avio_seek(pb, next, SEEK_SET);
537 static int mov_read_hdlr(MOVContext *c, AVIOContext *pb, MOVAtom atom)
541 uint32_t av_unused ctype;
545 if (c->fc->nb_streams < 1) // meta before first trak
548 st = c->fc->streams[c->fc->nb_streams-1];
550 avio_r8(pb); /* version */
551 avio_rb24(pb); /* flags */
554 ctype = avio_rl32(pb);
555 type = avio_rl32(pb); /* component subtype */
557 av_dlog(c->fc, "ctype= %.4s (0x%08x)\n", (char*)&ctype, ctype);
558 av_dlog(c->fc, "stype= %.4s\n", (char*)&type);
560 if (type == MKTAG('v','i','d','e'))
561 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
562 else if (type == MKTAG('s','o','u','n'))
563 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
564 else if (type == MKTAG('m','1','a',' '))
565 st->codec->codec_id = AV_CODEC_ID_MP2;
566 else if ((type == MKTAG('s','u','b','p')) || (type == MKTAG('c','l','c','p')))
567 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
569 avio_rb32(pb); /* component manufacture */
570 avio_rb32(pb); /* component flags */
571 avio_rb32(pb); /* component flags mask */
573 title_size = atom.size - 24;
574 if (title_size > 0) {
575 title_str = av_malloc(title_size + 1); /* Add null terminator */
577 return AVERROR(ENOMEM);
578 avio_read(pb, title_str, title_size);
579 title_str[title_size] = 0;
581 av_dict_set(&st->metadata, "handler_name", title_str +
582 (!c->isom && title_str[0] == title_size - 1), 0);
583 av_freep(&title_str);
589 int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb, MOVAtom atom)
594 if (fc->nb_streams < 1)
596 st = fc->streams[fc->nb_streams-1];
598 avio_rb32(pb); /* version + flags */
599 ff_mp4_read_descr(fc, pb, &tag);
600 if (tag == MP4ESDescrTag) {
601 ff_mp4_parse_es_descr(pb, NULL);
603 avio_rb16(pb); /* ID */
605 ff_mp4_read_descr(fc, pb, &tag);
606 if (tag == MP4DecConfigDescrTag)
607 ff_mp4_read_dec_config_descr(fc, st, pb);
611 static int mov_read_esds(MOVContext *c, AVIOContext *pb, MOVAtom atom)
613 return ff_mov_read_esds(c->fc, pb, atom);
616 static int mov_read_dac3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
619 int ac3info, acmod, lfeon, bsmod;
621 if (c->fc->nb_streams < 1)
623 st = c->fc->streams[c->fc->nb_streams-1];
625 ac3info = avio_rb24(pb);
626 bsmod = (ac3info >> 14) & 0x7;
627 acmod = (ac3info >> 11) & 0x7;
628 lfeon = (ac3info >> 10) & 0x1;
629 st->codec->channels = ((int[]){2,1,2,3,3,4,4,5})[acmod] + lfeon;
630 st->codec->channel_layout = avpriv_ac3_channel_layout_tab[acmod];
632 st->codec->channel_layout |= AV_CH_LOW_FREQUENCY;
633 st->codec->audio_service_type = bsmod;
634 if (st->codec->channels > 1 && bsmod == 0x7)
635 st->codec->audio_service_type = AV_AUDIO_SERVICE_TYPE_KARAOKE;
640 static int mov_read_dec3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
643 int eac3info, acmod, lfeon, bsmod;
645 if (c->fc->nb_streams < 1)
647 st = c->fc->streams[c->fc->nb_streams-1];
649 /* No need to parse fields for additional independent substreams and its
650 * associated dependent substreams since libavcodec's E-AC-3 decoder
651 * does not support them yet. */
652 avio_rb16(pb); /* data_rate and num_ind_sub */
653 eac3info = avio_rb24(pb);
654 bsmod = (eac3info >> 12) & 0x1f;
655 acmod = (eac3info >> 9) & 0x7;
656 lfeon = (eac3info >> 8) & 0x1;
657 st->codec->channel_layout = avpriv_ac3_channel_layout_tab[acmod];
659 st->codec->channel_layout |= AV_CH_LOW_FREQUENCY;
660 st->codec->channels = av_get_channel_layout_nb_channels(st->codec->channel_layout);
661 st->codec->audio_service_type = bsmod;
662 if (st->codec->channels > 1 && bsmod == 0x7)
663 st->codec->audio_service_type = AV_AUDIO_SERVICE_TYPE_KARAOKE;
668 static int mov_read_chan(MOVContext *c, AVIOContext *pb, MOVAtom atom)
672 if (c->fc->nb_streams < 1)
674 st = c->fc->streams[c->fc->nb_streams-1];
679 ff_mov_read_chan(c->fc, pb, st, atom.size - 4);
684 static int mov_read_wfex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
688 if (c->fc->nb_streams < 1)
690 st = c->fc->streams[c->fc->nb_streams-1];
692 if (ff_get_wav_header(pb, st->codec, atom.size) < 0) {
693 av_log(c->fc, AV_LOG_WARNING, "get_wav_header failed\n");
699 static int mov_read_pasp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
701 const int num = avio_rb32(pb);
702 const int den = avio_rb32(pb);
705 if (c->fc->nb_streams < 1)
707 st = c->fc->streams[c->fc->nb_streams-1];
709 if ((st->sample_aspect_ratio.den != 1 || st->sample_aspect_ratio.num) && // default
710 (den != st->sample_aspect_ratio.den || num != st->sample_aspect_ratio.num)) {
711 av_log(c->fc, AV_LOG_WARNING,
712 "sample aspect ratio already set to %d:%d, ignoring 'pasp' atom (%d:%d)\n",
713 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
715 } else if (den != 0) {
716 st->sample_aspect_ratio.num = num;
717 st->sample_aspect_ratio.den = den;
722 /* this atom contains actual media data */
723 static int mov_read_mdat(MOVContext *c, AVIOContext *pb, MOVAtom atom)
725 if (atom.size == 0) /* wrong one (MP4) */
728 return 0; /* now go for moov */
731 /* read major brand, minor version and compatible brands and store them as metadata */
732 static int mov_read_ftyp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
736 char minor_ver_str[11]; /* 32 bit integer -> 10 digits + null */
737 char* comp_brands_str;
738 uint8_t type[5] = {0};
740 avio_read(pb, type, 4);
741 if (strcmp(type, "qt "))
743 av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
744 av_dict_set(&c->fc->metadata, "major_brand", type, 0);
745 minor_ver = avio_rb32(pb); /* minor version */
746 snprintf(minor_ver_str, sizeof(minor_ver_str), "%d", minor_ver);
747 av_dict_set(&c->fc->metadata, "minor_version", minor_ver_str, 0);
749 comp_brand_size = atom.size - 8;
750 if (comp_brand_size < 0)
751 return AVERROR_INVALIDDATA;
752 comp_brands_str = av_malloc(comp_brand_size + 1); /* Add null terminator */
753 if (!comp_brands_str)
754 return AVERROR(ENOMEM);
755 avio_read(pb, comp_brands_str, comp_brand_size);
756 comp_brands_str[comp_brand_size] = 0;
757 av_dict_set(&c->fc->metadata, "compatible_brands", comp_brands_str, 0);
758 av_freep(&comp_brands_str);
763 /* this atom should contain all header atoms */
764 static int mov_read_moov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
768 if ((ret = mov_read_default(c, pb, atom)) < 0)
770 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
771 /* so we don't parse the whole file if over a network */
773 return 0; /* now go for mdat */
776 static int mov_read_moof(MOVContext *c, AVIOContext *pb, MOVAtom atom)
778 c->fragment.moof_offset = avio_tell(pb) - 8;
779 av_dlog(c->fc, "moof offset %"PRIx64"\n", c->fragment.moof_offset);
780 return mov_read_default(c, pb, atom);
783 static void mov_metadata_creation_time(AVDictionary **metadata, int64_t time)
789 if(time >= 2082844800)
790 time -= 2082844800; /* seconds between 1904-01-01 and Epoch */
792 ptm = gmtime(&timet);
794 strftime(buffer, sizeof(buffer), "%Y-%m-%d %H:%M:%S", ptm);
795 av_dict_set(metadata, "creation_time", buffer, 0);
799 static int mov_read_mdhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
802 MOVStreamContext *sc;
804 char language[4] = {0};
806 int64_t creation_time;
808 if (c->fc->nb_streams < 1)
810 st = c->fc->streams[c->fc->nb_streams-1];
813 version = avio_r8(pb);
815 av_log_ask_for_sample(c, "unsupported version %d\n", version);
816 return AVERROR_PATCHWELCOME;
818 avio_rb24(pb); /* flags */
820 creation_time = avio_rb64(pb);
823 creation_time = avio_rb32(pb);
824 avio_rb32(pb); /* modification time */
826 mov_metadata_creation_time(&st->metadata, creation_time);
828 sc->time_scale = avio_rb32(pb);
829 st->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
831 lang = avio_rb16(pb); /* language */
832 if (ff_mov_lang_to_iso639(lang, language))
833 av_dict_set(&st->metadata, "language", language, 0);
834 avio_rb16(pb); /* quality */
839 static int mov_read_mvhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
841 int64_t creation_time;
842 int version = avio_r8(pb); /* version */
843 avio_rb24(pb); /* flags */
846 creation_time = avio_rb64(pb);
849 creation_time = avio_rb32(pb);
850 avio_rb32(pb); /* modification time */
852 mov_metadata_creation_time(&c->fc->metadata, creation_time);
853 c->time_scale = avio_rb32(pb); /* time scale */
855 av_dlog(c->fc, "time scale = %i\n", c->time_scale);
857 c->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
858 // set the AVCodecContext duration because the duration of individual tracks
860 if (c->time_scale > 0)
861 c->fc->duration = av_rescale(c->duration, AV_TIME_BASE, c->time_scale);
862 avio_rb32(pb); /* preferred scale */
864 avio_rb16(pb); /* preferred volume */
866 avio_skip(pb, 10); /* reserved */
868 avio_skip(pb, 36); /* display matrix */
870 avio_rb32(pb); /* preview time */
871 avio_rb32(pb); /* preview duration */
872 avio_rb32(pb); /* poster time */
873 avio_rb32(pb); /* selection time */
874 avio_rb32(pb); /* selection duration */
875 avio_rb32(pb); /* current time */
876 avio_rb32(pb); /* next track ID */
880 static int mov_read_enda(MOVContext *c, AVIOContext *pb, MOVAtom atom)
885 if (c->fc->nb_streams < 1)
887 st = c->fc->streams[c->fc->nb_streams-1];
889 little_endian = avio_rb16(pb) & 0xFF;
890 av_dlog(c->fc, "enda %d\n", little_endian);
891 if (little_endian == 1) {
892 switch (st->codec->codec_id) {
893 case AV_CODEC_ID_PCM_S24BE:
894 st->codec->codec_id = AV_CODEC_ID_PCM_S24LE;
896 case AV_CODEC_ID_PCM_S32BE:
897 st->codec->codec_id = AV_CODEC_ID_PCM_S32LE;
899 case AV_CODEC_ID_PCM_F32BE:
900 st->codec->codec_id = AV_CODEC_ID_PCM_F32LE;
902 case AV_CODEC_ID_PCM_F64BE:
903 st->codec->codec_id = AV_CODEC_ID_PCM_F64LE;
912 static int mov_read_fiel(MOVContext *c, AVIOContext *pb, MOVAtom atom)
915 unsigned mov_field_order;
916 enum AVFieldOrder decoded_field_order = AV_FIELD_UNKNOWN;
918 if (c->fc->nb_streams < 1) // will happen with jp2 files
920 st = c->fc->streams[c->fc->nb_streams-1];
922 return AVERROR_INVALIDDATA;
923 mov_field_order = avio_rb16(pb);
924 if ((mov_field_order & 0xFF00) == 0x0100)
925 decoded_field_order = AV_FIELD_PROGRESSIVE;
926 else if ((mov_field_order & 0xFF00) == 0x0200) {
927 switch (mov_field_order & 0xFF) {
928 case 0x01: decoded_field_order = AV_FIELD_TT;
930 case 0x06: decoded_field_order = AV_FIELD_BB;
932 case 0x09: decoded_field_order = AV_FIELD_TB;
934 case 0x0E: decoded_field_order = AV_FIELD_BT;
938 if (decoded_field_order == AV_FIELD_UNKNOWN && mov_field_order) {
939 av_log(NULL, AV_LOG_ERROR, "Unknown MOV field order 0x%04x\n", mov_field_order);
941 st->codec->field_order = decoded_field_order;
946 /* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
947 static int mov_read_extradata(MOVContext *c, AVIOContext *pb, MOVAtom atom,
948 enum AVCodecID codec_id)
954 if (c->fc->nb_streams < 1) // will happen with jp2 files
956 st= c->fc->streams[c->fc->nb_streams-1];
958 if (st->codec->codec_id != codec_id)
959 return 0; /* unexpected codec_id - don't mess with extradata */
961 size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
962 if (size > INT_MAX || (uint64_t)atom.size > INT_MAX)
963 return AVERROR_INVALIDDATA;
964 buf= av_realloc(st->codec->extradata, size);
966 return AVERROR(ENOMEM);
967 st->codec->extradata= buf;
968 buf+= st->codec->extradata_size;
969 st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE;
970 AV_WB32( buf , atom.size + 8);
971 AV_WL32( buf + 4, atom.type);
972 avio_read(pb, buf + 8, atom.size);
976 /* wrapper functions for reading ALAC/AVS/MJPEG/MJPEG2000 extradata atoms only for those codecs */
977 static int mov_read_alac(MOVContext *c, AVIOContext *pb, MOVAtom atom)
979 return mov_read_extradata(c, pb, atom, AV_CODEC_ID_ALAC);
982 static int mov_read_avss(MOVContext *c, AVIOContext *pb, MOVAtom atom)
984 return mov_read_extradata(c, pb, atom, AV_CODEC_ID_AVS);
987 static int mov_read_jp2h(MOVContext *c, AVIOContext *pb, MOVAtom atom)
989 return mov_read_extradata(c, pb, atom, AV_CODEC_ID_JPEG2000);
992 static int mov_read_avid(MOVContext *c, AVIOContext *pb, MOVAtom atom)
994 return mov_read_extradata(c, pb, atom, AV_CODEC_ID_AVUI);
997 static int mov_read_svq3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
999 return mov_read_extradata(c, pb, atom, AV_CODEC_ID_SVQ3);
1002 static int mov_read_wave(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1006 if (c->fc->nb_streams < 1)
1008 st = c->fc->streams[c->fc->nb_streams-1];
1010 if ((uint64_t)atom.size > (1<<30))
1011 return AVERROR_INVALIDDATA;
1013 if (st->codec->codec_id == AV_CODEC_ID_QDM2 || st->codec->codec_id == AV_CODEC_ID_QDMC) {
1014 // pass all frma atom to codec, needed at least for QDMC and QDM2
1015 av_free(st->codec->extradata);
1016 st->codec->extradata_size = 0;
1017 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
1018 if (!st->codec->extradata)
1019 return AVERROR(ENOMEM);
1020 st->codec->extradata_size = atom.size;
1021 avio_read(pb, st->codec->extradata, atom.size);
1022 } else if (atom.size > 8) { /* to read frma, esds atoms */
1024 if ((ret = mov_read_default(c, pb, atom)) < 0)
1027 avio_skip(pb, atom.size);
1032 * This function reads atom content and puts data in extradata without tag
1033 * nor size unlike mov_read_extradata.
1035 static int mov_read_glbl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1039 if (c->fc->nb_streams < 1)
1041 st = c->fc->streams[c->fc->nb_streams-1];
1043 if ((uint64_t)atom.size > (1<<30))
1044 return AVERROR_INVALIDDATA;
1046 if (atom.size >= 10) {
1047 // Broken files created by legacy versions of libavformat will
1048 // wrap a whole fiel atom inside of a glbl atom.
1049 unsigned size = avio_rb32(pb);
1050 unsigned type = avio_rl32(pb);
1051 avio_seek(pb, -8, SEEK_CUR);
1052 if (type == MKTAG('f','i','e','l') && size == atom.size)
1053 return mov_read_default(c, pb, atom);
1055 av_free(st->codec->extradata);
1056 st->codec->extradata_size = 0;
1057 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
1058 if (!st->codec->extradata)
1059 return AVERROR(ENOMEM);
1060 st->codec->extradata_size = atom.size;
1061 avio_read(pb, st->codec->extradata, atom.size);
1065 static int mov_read_dvc1(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1068 uint8_t profile_level;
1070 if (c->fc->nb_streams < 1)
1072 st = c->fc->streams[c->fc->nb_streams-1];
1074 if (atom.size >= (1<<28) || atom.size < 7)
1075 return AVERROR_INVALIDDATA;
1077 profile_level = avio_r8(pb);
1078 if ((profile_level & 0xf0) != 0xc0)
1081 av_free(st->codec->extradata);
1082 st->codec->extradata_size = 0;
1083 st->codec->extradata = av_mallocz(atom.size - 7 + FF_INPUT_BUFFER_PADDING_SIZE);
1084 if (!st->codec->extradata)
1085 return AVERROR(ENOMEM);
1086 st->codec->extradata_size = atom.size - 7;
1087 avio_seek(pb, 6, SEEK_CUR);
1088 avio_read(pb, st->codec->extradata, st->codec->extradata_size);
1093 * An strf atom is a BITMAPINFOHEADER struct. This struct is 40 bytes itself,
1094 * but can have extradata appended at the end after the 40 bytes belonging
1097 static int mov_read_strf(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1101 if (c->fc->nb_streams < 1)
1103 if (atom.size <= 40)
1105 st = c->fc->streams[c->fc->nb_streams-1];
1107 if ((uint64_t)atom.size > (1<<30))
1108 return AVERROR_INVALIDDATA;
1110 av_free(st->codec->extradata);
1111 st->codec->extradata_size = 0;
1112 st->codec->extradata = av_mallocz(atom.size - 40 + FF_INPUT_BUFFER_PADDING_SIZE);
1113 if (!st->codec->extradata)
1114 return AVERROR(ENOMEM);
1115 st->codec->extradata_size = atom.size - 40;
1117 avio_read(pb, st->codec->extradata, atom.size - 40);
1121 static int mov_read_stco(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1124 MOVStreamContext *sc;
1125 unsigned int i, entries;
1127 if (c->fc->nb_streams < 1)
1129 st = c->fc->streams[c->fc->nb_streams-1];
1132 avio_r8(pb); /* version */
1133 avio_rb24(pb); /* flags */
1135 entries = avio_rb32(pb);
1139 if (entries >= UINT_MAX/sizeof(int64_t))
1140 return AVERROR_INVALIDDATA;
1142 sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
1143 if (!sc->chunk_offsets)
1144 return AVERROR(ENOMEM);
1145 sc->chunk_count = entries;
1147 if (atom.type == MKTAG('s','t','c','o'))
1148 for (i = 0; i < entries && !pb->eof_reached; i++)
1149 sc->chunk_offsets[i] = avio_rb32(pb);
1150 else if (atom.type == MKTAG('c','o','6','4'))
1151 for (i = 0; i < entries && !pb->eof_reached; i++)
1152 sc->chunk_offsets[i] = avio_rb64(pb);
1154 return AVERROR_INVALIDDATA;
1156 sc->chunk_count = i;
1158 if (pb->eof_reached)
1165 * Compute codec id for 'lpcm' tag.
1166 * See CoreAudioTypes and AudioStreamBasicDescription at Apple.
1168 enum AVCodecID ff_mov_get_lpcm_codec_id(int bps, int flags)
1170 if (flags & 1) { // floating point
1171 if (flags & 2) { // big endian
1172 if (bps == 32) return AV_CODEC_ID_PCM_F32BE;
1173 else if (bps == 64) return AV_CODEC_ID_PCM_F64BE;
1175 if (bps == 32) return AV_CODEC_ID_PCM_F32LE;
1176 else if (bps == 64) return AV_CODEC_ID_PCM_F64LE;
1182 if (flags & 4) return AV_CODEC_ID_PCM_S8;
1183 else return AV_CODEC_ID_PCM_U8;
1184 else if (bps == 16) return AV_CODEC_ID_PCM_S16BE;
1185 else if (bps == 24) return AV_CODEC_ID_PCM_S24BE;
1186 else if (bps == 32) return AV_CODEC_ID_PCM_S32BE;
1189 if (flags & 4) return AV_CODEC_ID_PCM_S8;
1190 else return AV_CODEC_ID_PCM_U8;
1191 else if (bps == 16) return AV_CODEC_ID_PCM_S16LE;
1192 else if (bps == 24) return AV_CODEC_ID_PCM_S24LE;
1193 else if (bps == 32) return AV_CODEC_ID_PCM_S32LE;
1196 return AV_CODEC_ID_NONE;
1199 int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries)
1202 MOVStreamContext *sc;
1203 int j, pseudo_stream_id;
1205 if (c->fc->nb_streams < 1)
1207 st = c->fc->streams[c->fc->nb_streams-1];
1210 for (pseudo_stream_id = 0;
1211 pseudo_stream_id < entries && !pb->eof_reached;
1212 pseudo_stream_id++) {
1213 //Parsing Sample description table
1216 MOVAtom a = { AV_RL32("stsd") };
1217 int64_t start_pos = avio_tell(pb);
1218 int64_t size = avio_rb32(pb); /* size */
1219 uint32_t format = avio_rl32(pb); /* data format */
1222 avio_rb32(pb); /* reserved */
1223 avio_rb16(pb); /* reserved */
1224 dref_id = avio_rb16(pb);
1225 }else if (size <= 7){
1226 av_log(c->fc, AV_LOG_ERROR, "invalid size %"PRId64" in stsd\n", size);
1227 return AVERROR_INVALIDDATA;
1230 if (st->codec->codec_tag &&
1231 st->codec->codec_tag != format &&
1232 (c->fc->video_codec_id ? ff_codec_get_id(ff_codec_movvideo_tags, format) != c->fc->video_codec_id
1233 : st->codec->codec_tag != MKTAG('j','p','e','g'))
1235 /* Multiple fourcc, we skip JPEG. This is not correct, we should
1236 * export it as a separate AVStream but this needs a few changes
1237 * in the MOV demuxer, patch welcome. */
1238 av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n");
1239 avio_skip(pb, size - (avio_tell(pb) - start_pos));
1242 /* we cannot demux concatenated h264 streams because of different extradata */
1243 if (st->codec->codec_tag && st->codec->codec_tag == AV_RL32("avc1"))
1244 av_log(c->fc, AV_LOG_WARNING, "Concatenated H.264 might not play corrently.\n");
1245 sc->pseudo_stream_id = st->codec->codec_tag ? -1 : pseudo_stream_id;
1246 sc->dref_id= dref_id;
1248 st->codec->codec_tag = format;
1249 id = ff_codec_get_id(ff_codec_movaudio_tags, format);
1250 if (id<=0 && ((format&0xFFFF) == 'm'+('s'<<8) || (format&0xFFFF) == 'T'+('S'<<8)))
1251 id = ff_codec_get_id(ff_codec_wav_tags, av_bswap32(format)&0xFFFF);
1253 if (st->codec->codec_type != AVMEDIA_TYPE_VIDEO && id > 0) {
1254 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
1255 } else if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO && /* do not overwrite codec type */
1256 format && format != MKTAG('m','p','4','s')) { /* skip old asf mpeg4 tag */
1257 id = ff_codec_get_id(ff_codec_movvideo_tags, format);
1259 id = ff_codec_get_id(ff_codec_bmp_tags, format);
1261 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
1262 else if (st->codec->codec_type == AVMEDIA_TYPE_DATA ||
1263 (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE &&
1264 st->codec->codec_id == AV_CODEC_ID_NONE)){
1265 id = ff_codec_get_id(ff_codec_movsubtitle_tags, format);
1267 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
1271 av_dlog(c->fc, "size=%"PRId64" 4CC= %c%c%c%c codec_type=%d\n", size,
1272 (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff,
1273 (format >> 24) & 0xff, st->codec->codec_type);
1275 if (st->codec->codec_type==AVMEDIA_TYPE_VIDEO) {
1276 unsigned int color_depth, len;
1277 int color_greyscale;
1280 st->codec->codec_id = id;
1281 avio_rb16(pb); /* version */
1282 avio_rb16(pb); /* revision level */
1283 avio_rb32(pb); /* vendor */
1284 avio_rb32(pb); /* temporal quality */
1285 avio_rb32(pb); /* spatial quality */
1287 st->codec->width = avio_rb16(pb); /* width */
1288 st->codec->height = avio_rb16(pb); /* height */
1290 avio_rb32(pb); /* horiz resolution */
1291 avio_rb32(pb); /* vert resolution */
1292 avio_rb32(pb); /* data size, always 0 */
1293 avio_rb16(pb); /* frames per samples */
1295 len = avio_r8(pb); /* codec name, pascal string */
1298 mov_read_mac_string(c, pb, len, st->codec->codec_name, 32);
1300 avio_skip(pb, 31 - len);
1301 /* codec_tag YV12 triggers an UV swap in rawdec.c */
1302 if (!memcmp(st->codec->codec_name, "Planar Y'CbCr 8-bit 4:2:0", 25))
1303 st->codec->codec_tag=MKTAG('I', '4', '2', '0');
1305 st->codec->bits_per_coded_sample = avio_rb16(pb); /* depth */
1306 color_table_id = avio_rb16(pb); /* colortable id */
1307 av_dlog(c->fc, "depth %d, ctab id %d\n",
1308 st->codec->bits_per_coded_sample, color_table_id);
1309 /* figure out the palette situation */
1310 color_depth = st->codec->bits_per_coded_sample & 0x1F;
1311 color_greyscale = st->codec->bits_per_coded_sample & 0x20;
1313 /* if the depth is 2, 4, or 8 bpp, file is palettized */
1314 if ((color_depth == 2) || (color_depth == 4) ||
1315 (color_depth == 8)) {
1316 /* for palette traversal */
1317 unsigned int color_start, color_count, color_end;
1318 unsigned char a, r, g, b;
1320 if (color_greyscale) {
1321 int color_index, color_dec;
1322 /* compute the greyscale palette */
1323 st->codec->bits_per_coded_sample = color_depth;
1324 color_count = 1 << color_depth;
1326 color_dec = 256 / (color_count - 1);
1327 for (j = 0; j < color_count; j++) {
1328 if (id == AV_CODEC_ID_CINEPAK){
1329 r = g = b = color_count - 1 - color_index;
1331 r = g = b = color_index;
1333 (0xFFU << 24) | (r << 16) | (g << 8) | (b);
1334 color_index -= color_dec;
1335 if (color_index < 0)
1338 } else if (color_table_id) {
1339 const uint8_t *color_table;
1340 /* if flag bit 3 is set, use the default palette */
1341 color_count = 1 << color_depth;
1342 if (color_depth == 2)
1343 color_table = ff_qt_default_palette_4;
1344 else if (color_depth == 4)
1345 color_table = ff_qt_default_palette_16;
1347 color_table = ff_qt_default_palette_256;
1349 for (j = 0; j < color_count; j++) {
1350 r = color_table[j * 3 + 0];
1351 g = color_table[j * 3 + 1];
1352 b = color_table[j * 3 + 2];
1354 (0xFFU << 24) | (r << 16) | (g << 8) | (b);
1357 /* load the palette from the file */
1358 color_start = avio_rb32(pb);
1359 color_count = avio_rb16(pb);
1360 color_end = avio_rb16(pb);
1361 if ((color_start <= 255) &&
1362 (color_end <= 255)) {
1363 for (j = color_start; j <= color_end; j++) {
1364 /* each A, R, G, or B component is 16 bits;
1365 * only use the top 8 bits */
1375 (a << 24 ) | (r << 16) | (g << 8) | (b);
1379 sc->has_palette = 1;
1381 } else if (st->codec->codec_type==AVMEDIA_TYPE_AUDIO) {
1382 int bits_per_sample, flags;
1383 uint16_t version = avio_rb16(pb);
1385 st->codec->codec_id = id;
1386 avio_rb16(pb); /* revision level */
1387 avio_rb32(pb); /* vendor */
1389 st->codec->channels = avio_rb16(pb); /* channel count */
1390 av_dlog(c->fc, "audio channels %d\n", st->codec->channels);
1391 st->codec->bits_per_coded_sample = avio_rb16(pb); /* sample size */
1393 sc->audio_cid = avio_rb16(pb);
1394 avio_rb16(pb); /* packet size = 0 */
1396 st->codec->sample_rate = ((avio_rb32(pb) >> 16));
1398 //Read QT version 1 fields. In version 0 these do not exist.
1399 av_dlog(c->fc, "version =%d, isom =%d\n",version,c->isom);
1402 sc->samples_per_frame = avio_rb32(pb);
1403 avio_rb32(pb); /* bytes per packet */
1404 sc->bytes_per_frame = avio_rb32(pb);
1405 avio_rb32(pb); /* bytes per sample */
1406 } else if (version==2) {
1407 avio_rb32(pb); /* sizeof struct only */
1408 st->codec->sample_rate = av_int2double(avio_rb64(pb)); /* float 64 */
1409 st->codec->channels = avio_rb32(pb);
1410 avio_rb32(pb); /* always 0x7F000000 */
1411 st->codec->bits_per_coded_sample = avio_rb32(pb); /* bits per channel if sound is uncompressed */
1412 flags = avio_rb32(pb); /* lpcm format specific flag */
1413 sc->bytes_per_frame = avio_rb32(pb); /* bytes per audio packet if constant */
1414 sc->samples_per_frame = avio_rb32(pb); /* lpcm frames per audio packet if constant */
1415 if (format == MKTAG('l','p','c','m'))
1416 st->codec->codec_id = ff_mov_get_lpcm_codec_id(st->codec->bits_per_coded_sample, flags);
1420 switch (st->codec->codec_id) {
1421 case AV_CODEC_ID_PCM_S8:
1422 case AV_CODEC_ID_PCM_U8:
1423 if (st->codec->bits_per_coded_sample == 16)
1424 st->codec->codec_id = AV_CODEC_ID_PCM_S16BE;
1426 case AV_CODEC_ID_PCM_S16LE:
1427 case AV_CODEC_ID_PCM_S16BE:
1428 if (st->codec->bits_per_coded_sample == 8)
1429 st->codec->codec_id = AV_CODEC_ID_PCM_S8;
1430 else if (st->codec->bits_per_coded_sample == 24)
1431 st->codec->codec_id =
1432 st->codec->codec_id == AV_CODEC_ID_PCM_S16BE ?
1433 AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE;
1435 /* set values for old format before stsd version 1 appeared */
1436 case AV_CODEC_ID_MACE3:
1437 sc->samples_per_frame = 6;
1438 sc->bytes_per_frame = 2*st->codec->channels;
1440 case AV_CODEC_ID_MACE6:
1441 sc->samples_per_frame = 6;
1442 sc->bytes_per_frame = 1*st->codec->channels;
1444 case AV_CODEC_ID_ADPCM_IMA_QT:
1445 sc->samples_per_frame = 64;
1446 sc->bytes_per_frame = 34*st->codec->channels;
1448 case AV_CODEC_ID_GSM:
1449 sc->samples_per_frame = 160;
1450 sc->bytes_per_frame = 33;
1456 bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
1457 if (bits_per_sample) {
1458 st->codec->bits_per_coded_sample = bits_per_sample;
1459 sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
1461 } else if (st->codec->codec_type==AVMEDIA_TYPE_SUBTITLE){
1462 // ttxt stsd contains display flags, justification, background
1463 // color, fonts, and default styles, so fake an atom to read it
1464 MOVAtom fake_atom = { .size = size - (avio_tell(pb) - start_pos) };
1465 if (format != AV_RL32("mp4s")) // mp4s contains a regular esds atom
1466 mov_read_glbl(c, pb, fake_atom);
1467 st->codec->codec_id= id;
1468 st->codec->width = sc->width;
1469 st->codec->height = sc->height;
1471 if (st->codec->codec_tag == MKTAG('t','m','c','d')) {
1472 MOVStreamContext *tmcd_ctx = st->priv_data;
1474 avio_rb32(pb); /* reserved */
1475 val = avio_rb32(pb); /* flags */
1476 tmcd_ctx->tmcd_flags = val;
1478 st->codec->flags2 |= CODEC_FLAG2_DROP_FRAME_TIMECODE;
1479 avio_rb32(pb); /* time scale */
1480 avio_rb32(pb); /* frame duration */
1481 st->codec->time_base.den = avio_r8(pb); /* number of frame */
1482 st->codec->time_base.num = 1;
1484 /* other codec type, just skip (rtp, mp4s, ...) */
1485 avio_skip(pb, size - (avio_tell(pb) - start_pos));
1487 /* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */
1488 a.size = size - (avio_tell(pb) - start_pos);
1491 if ((ret = mov_read_default(c, pb, a)) < 0)
1493 } else if (a.size > 0)
1494 avio_skip(pb, a.size);
1497 if (pb->eof_reached)
1500 if (st->codec->codec_type==AVMEDIA_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1)
1501 st->codec->sample_rate= sc->time_scale;
1503 /* special codec parameters handling */
1504 switch (st->codec->codec_id) {
1505 #if CONFIG_DV_DEMUXER
1506 case AV_CODEC_ID_DVAUDIO:
1507 c->dv_fctx = avformat_alloc_context();
1508 c->dv_demux = avpriv_dv_init_demux(c->dv_fctx);
1510 av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
1511 return AVERROR(ENOMEM);
1513 sc->dv_audio_container = 1;
1514 st->codec->codec_id = AV_CODEC_ID_PCM_S16LE;
1517 /* no ifdef since parameters are always those */
1518 case AV_CODEC_ID_QCELP:
1519 // force sample rate for qcelp when not stored in mov
1520 if (st->codec->codec_tag != MKTAG('Q','c','l','p'))
1521 st->codec->sample_rate = 8000;
1522 st->codec->channels= 1; /* really needed */
1524 case AV_CODEC_ID_AMR_NB:
1525 st->codec->channels= 1; /* really needed */
1526 /* force sample rate for amr, stsd in 3gp does not store sample rate */
1527 st->codec->sample_rate = 8000;
1529 case AV_CODEC_ID_AMR_WB:
1530 st->codec->channels = 1;
1531 st->codec->sample_rate = 16000;
1533 case AV_CODEC_ID_MP2:
1534 case AV_CODEC_ID_MP3:
1535 st->codec->codec_type = AVMEDIA_TYPE_AUDIO; /* force type after stsd for m1a hdlr */
1536 st->need_parsing = AVSTREAM_PARSE_FULL;
1538 case AV_CODEC_ID_GSM:
1539 case AV_CODEC_ID_ADPCM_MS:
1540 case AV_CODEC_ID_ADPCM_IMA_WAV:
1541 case AV_CODEC_ID_ILBC:
1542 st->codec->block_align = sc->bytes_per_frame;
1544 case AV_CODEC_ID_ALAC:
1545 if (st->codec->extradata_size == 36) {
1546 st->codec->channels = AV_RB8 (st->codec->extradata+21);
1547 st->codec->sample_rate = AV_RB32(st->codec->extradata+32);
1550 case AV_CODEC_ID_AC3:
1551 st->need_parsing = AVSTREAM_PARSE_FULL;
1553 case AV_CODEC_ID_MPEG1VIDEO:
1554 st->need_parsing = AVSTREAM_PARSE_FULL;
1556 case AV_CODEC_ID_VC1:
1557 st->need_parsing = AVSTREAM_PARSE_FULL;
1566 static int mov_read_stsd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1570 avio_r8(pb); /* version */
1571 avio_rb24(pb); /* flags */
1572 entries = avio_rb32(pb);
1574 return ff_mov_read_stsd_entries(c, pb, entries);
1577 static int mov_read_stsc(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1580 MOVStreamContext *sc;
1581 unsigned int i, entries;
1583 if (c->fc->nb_streams < 1)
1585 st = c->fc->streams[c->fc->nb_streams-1];
1588 avio_r8(pb); /* version */
1589 avio_rb24(pb); /* flags */
1591 entries = avio_rb32(pb);
1593 av_dlog(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
1597 if (entries >= UINT_MAX / sizeof(*sc->stsc_data))
1598 return AVERROR_INVALIDDATA;
1599 sc->stsc_data = av_malloc(entries * sizeof(*sc->stsc_data));
1601 return AVERROR(ENOMEM);
1603 for (i = 0; i < entries && !pb->eof_reached; i++) {
1604 sc->stsc_data[i].first = avio_rb32(pb);
1605 sc->stsc_data[i].count = avio_rb32(pb);
1606 sc->stsc_data[i].id = avio_rb32(pb);
1611 if (pb->eof_reached)
1617 static int mov_read_stps(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1620 MOVStreamContext *sc;
1621 unsigned i, entries;
1623 if (c->fc->nb_streams < 1)
1625 st = c->fc->streams[c->fc->nb_streams-1];
1628 avio_rb32(pb); // version + flags
1630 entries = avio_rb32(pb);
1631 if (entries >= UINT_MAX / sizeof(*sc->stps_data))
1632 return AVERROR_INVALIDDATA;
1633 sc->stps_data = av_malloc(entries * sizeof(*sc->stps_data));
1635 return AVERROR(ENOMEM);
1637 for (i = 0; i < entries && !pb->eof_reached; i++) {
1638 sc->stps_data[i] = avio_rb32(pb);
1639 //av_dlog(c->fc, "stps %d\n", sc->stps_data[i]);
1644 if (pb->eof_reached)
1650 static int mov_read_stss(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1653 MOVStreamContext *sc;
1654 unsigned int i, entries;
1656 if (c->fc->nb_streams < 1)
1658 st = c->fc->streams[c->fc->nb_streams-1];
1661 avio_r8(pb); /* version */
1662 avio_rb24(pb); /* flags */
1664 entries = avio_rb32(pb);
1666 av_dlog(c->fc, "keyframe_count = %d\n", entries);
1670 sc->keyframe_absent = 1;
1673 if (entries >= UINT_MAX / sizeof(int))
1674 return AVERROR_INVALIDDATA;
1675 sc->keyframes = av_malloc(entries * sizeof(int));
1677 return AVERROR(ENOMEM);
1679 for (i = 0; i < entries && !pb->eof_reached; i++) {
1680 sc->keyframes[i] = avio_rb32(pb);
1681 //av_dlog(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
1684 sc->keyframe_count = i;
1686 if (pb->eof_reached)
1692 static int mov_read_stsz(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1695 MOVStreamContext *sc;
1696 unsigned int i, entries, sample_size, field_size, num_bytes;
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 if (atom.type == MKTAG('s','t','s','z')) {
1709 sample_size = avio_rb32(pb);
1710 if (!sc->sample_size) /* do not overwrite value computed in stsd */
1711 sc->sample_size = sample_size;
1712 sc->alt_sample_size = sample_size;
1716 avio_rb24(pb); /* reserved */
1717 field_size = avio_r8(pb);
1719 entries = avio_rb32(pb);
1721 av_dlog(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, entries);
1723 sc->sample_count = entries;
1727 if (field_size != 4 && field_size != 8 && field_size != 16 && field_size != 32) {
1728 av_log(c->fc, AV_LOG_ERROR, "Invalid sample field size %d\n", field_size);
1729 return AVERROR_INVALIDDATA;
1734 if (entries >= UINT_MAX / sizeof(int) || entries >= (UINT_MAX - 4) / field_size)
1735 return AVERROR_INVALIDDATA;
1736 sc->sample_sizes = av_malloc(entries * sizeof(int));
1737 if (!sc->sample_sizes)
1738 return AVERROR(ENOMEM);
1740 num_bytes = (entries*field_size+4)>>3;
1742 buf = av_malloc(num_bytes+FF_INPUT_BUFFER_PADDING_SIZE);
1744 av_freep(&sc->sample_sizes);
1745 return AVERROR(ENOMEM);
1748 if (avio_read(pb, buf, num_bytes) < num_bytes) {
1749 av_freep(&sc->sample_sizes);
1751 return AVERROR_INVALIDDATA;
1754 init_get_bits(&gb, buf, 8*num_bytes);
1756 for (i = 0; i < entries && !pb->eof_reached; i++) {
1757 sc->sample_sizes[i] = get_bits_long(&gb, field_size);
1758 sc->data_size += sc->sample_sizes[i];
1761 sc->sample_count = i;
1763 if (pb->eof_reached)
1770 static int mov_read_stts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1773 MOVStreamContext *sc;
1774 unsigned int i, entries;
1776 int64_t total_sample_count=0;
1778 if (c->fc->nb_streams < 1)
1780 st = c->fc->streams[c->fc->nb_streams-1];
1783 avio_r8(pb); /* version */
1784 avio_rb24(pb); /* flags */
1785 entries = avio_rb32(pb);
1787 av_dlog(c->fc, "track[%i].stts.entries = %i\n",
1788 c->fc->nb_streams-1, entries);
1790 if (entries >= UINT_MAX / sizeof(*sc->stts_data))
1793 sc->stts_data = av_malloc(entries * sizeof(*sc->stts_data));
1795 return AVERROR(ENOMEM);
1797 for (i = 0; i < entries && !pb->eof_reached; i++) {
1798 int sample_duration;
1801 sample_count=avio_rb32(pb);
1802 sample_duration = avio_rb32(pb);
1803 /* sample_duration < 0 is invalid based on the spec */
1804 if (sample_duration < 0) {
1805 av_log(c->fc, AV_LOG_ERROR, "Invalid SampleDelta in STTS %d\n", sample_duration);
1806 sample_duration = 1;
1808 sc->stts_data[i].count= sample_count;
1809 sc->stts_data[i].duration= sample_duration;
1811 av_dlog(c->fc, "sample_count=%d, sample_duration=%d\n",
1812 sample_count, sample_duration);
1814 duration+=(int64_t)sample_duration*sample_count;
1815 total_sample_count+=sample_count;
1820 if (pb->eof_reached)
1823 st->nb_frames= total_sample_count;
1825 st->duration= duration;
1826 sc->track_end = duration;
1830 static int mov_read_ctts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1833 MOVStreamContext *sc;
1834 unsigned int i, entries;
1836 if (c->fc->nb_streams < 1)
1838 st = c->fc->streams[c->fc->nb_streams-1];
1841 avio_r8(pb); /* version */
1842 avio_rb24(pb); /* flags */
1843 entries = avio_rb32(pb);
1845 av_dlog(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
1849 if (entries >= UINT_MAX / sizeof(*sc->ctts_data))
1850 return AVERROR_INVALIDDATA;
1851 sc->ctts_data = av_malloc(entries * sizeof(*sc->ctts_data));
1853 return AVERROR(ENOMEM);
1855 for (i = 0; i < entries && !pb->eof_reached; i++) {
1856 int count =avio_rb32(pb);
1857 int duration =avio_rb32(pb);
1859 sc->ctts_data[i].count = count;
1860 sc->ctts_data[i].duration= duration;
1862 av_dlog(c->fc, "count=%d, duration=%d\n",
1865 if (FFABS(duration) > (1<<28) && i+2<entries) {
1866 av_log(c->fc, AV_LOG_WARNING, "CTTS invalid\n");
1867 av_freep(&sc->ctts_data);
1872 if (duration < 0 && i+2<entries)
1873 sc->dts_shift = FFMAX(sc->dts_shift, -duration);
1878 if (pb->eof_reached)
1881 av_dlog(c->fc, "dts shift %d\n", sc->dts_shift);
1886 static int mov_read_sbgp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1889 MOVStreamContext *sc;
1890 unsigned int i, entries;
1892 uint32_t grouping_type;
1894 if (c->fc->nb_streams < 1)
1896 st = c->fc->streams[c->fc->nb_streams-1];
1899 version = avio_r8(pb); /* version */
1900 avio_rb24(pb); /* flags */
1901 grouping_type = avio_rl32(pb);
1902 if (grouping_type != MKTAG( 'r','a','p',' '))
1903 return 0; /* only support 'rap ' grouping */
1905 avio_rb32(pb); /* grouping_type_parameter */
1907 entries = avio_rb32(pb);
1910 if (entries >= UINT_MAX / sizeof(*sc->rap_group))
1911 return AVERROR_INVALIDDATA;
1912 sc->rap_group = av_malloc(entries * sizeof(*sc->rap_group));
1914 return AVERROR(ENOMEM);
1916 for (i = 0; i < entries && !pb->eof_reached; i++) {
1917 sc->rap_group[i].count = avio_rb32(pb); /* sample_count */
1918 sc->rap_group[i].index = avio_rb32(pb); /* group_description_index */
1921 sc->rap_group_count = i;
1923 return pb->eof_reached ? AVERROR_EOF : 0;
1926 static void mov_build_index(MOVContext *mov, AVStream *st)
1928 MOVStreamContext *sc = st->priv_data;
1929 int64_t current_offset;
1930 int64_t current_dts = 0;
1931 unsigned int stts_index = 0;
1932 unsigned int stsc_index = 0;
1933 unsigned int stss_index = 0;
1934 unsigned int stps_index = 0;
1936 uint64_t stream_size = 0;
1939 /* adjust first dts according to edit list */
1940 if ((sc->empty_duration || sc->start_time) && mov->time_scale > 0) {
1941 if (sc->empty_duration)
1942 sc->empty_duration = av_rescale(sc->empty_duration, sc->time_scale, mov->time_scale);
1943 sc->time_offset = sc->start_time - sc->empty_duration;
1944 current_dts = -sc->time_offset;
1945 if (sc->ctts_count>0 && sc->stts_count>0 &&
1946 sc->ctts_data[0].duration / FFMAX(sc->stts_data[0].duration, 1) > 16) {
1947 /* more than 16 frames delay, dts are likely wrong
1948 this happens with files created by iMovie */
1950 st->codec->has_b_frames = 1;
1954 /* only use old uncompressed audio chunk demuxing when stts specifies it */
1955 if (!(st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
1956 sc->stts_count == 1 && sc->stts_data[0].duration == 1)) {
1957 unsigned int current_sample = 0;
1958 unsigned int stts_sample = 0;
1959 unsigned int sample_size;
1960 unsigned int distance = 0;
1961 unsigned int rap_group_index = 0;
1962 unsigned int rap_group_sample = 0;
1963 int rap_group_present = sc->rap_group_count && sc->rap_group;
1964 int key_off = (sc->keyframe_count && sc->keyframes[0] > 0) || (sc->stps_data && sc->stps_data[0] > 0);
1966 current_dts -= sc->dts_shift;
1968 if (!sc->sample_count || st->nb_index_entries)
1970 if (sc->sample_count >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries)
1972 mem = av_realloc(st->index_entries, (st->nb_index_entries + sc->sample_count) * sizeof(*st->index_entries));
1975 st->index_entries = mem;
1976 st->index_entries_allocated_size = (st->nb_index_entries + sc->sample_count) * sizeof(*st->index_entries);
1978 for (i = 0; i < sc->chunk_count; i++) {
1979 current_offset = sc->chunk_offsets[i];
1980 while (stsc_index + 1 < sc->stsc_count &&
1981 i + 1 == sc->stsc_data[stsc_index + 1].first)
1983 for (j = 0; j < sc->stsc_data[stsc_index].count; j++) {
1985 if (current_sample >= sc->sample_count) {
1986 av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
1990 if (!sc->keyframe_absent && (!sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index])) {
1992 if (stss_index + 1 < sc->keyframe_count)
1994 } else if (sc->stps_count && current_sample+key_off == sc->stps_data[stps_index]) {
1996 if (stps_index + 1 < sc->stps_count)
1999 if (rap_group_present && rap_group_index < sc->rap_group_count) {
2000 if (sc->rap_group[rap_group_index].index > 0)
2002 if (++rap_group_sample == sc->rap_group[rap_group_index].count) {
2003 rap_group_sample = 0;
2009 sample_size = sc->alt_sample_size > 0 ? sc->alt_sample_size : sc->sample_sizes[current_sample];
2010 if (sc->pseudo_stream_id == -1 ||
2011 sc->stsc_data[stsc_index].id - 1 == sc->pseudo_stream_id) {
2012 AVIndexEntry *e = &st->index_entries[st->nb_index_entries++];
2013 e->pos = current_offset;
2014 e->timestamp = current_dts;
2015 e->size = sample_size;
2016 e->min_distance = distance;
2017 e->flags = keyframe ? AVINDEX_KEYFRAME : 0;
2018 av_dlog(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
2019 "size %d, distance %d, keyframe %d\n", st->index, current_sample,
2020 current_offset, current_dts, sample_size, distance, keyframe);
2023 current_offset += sample_size;
2024 stream_size += sample_size;
2025 current_dts += sc->stts_data[stts_index].duration;
2029 if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
2035 if (st->duration > 0)
2036 st->codec->bit_rate = stream_size*8*sc->time_scale/st->duration;
2038 unsigned chunk_samples, total = 0;
2040 // compute total chunk count
2041 for (i = 0; i < sc->stsc_count; i++) {
2042 unsigned count, chunk_count;
2044 chunk_samples = sc->stsc_data[i].count;
2045 if (i != sc->stsc_count - 1 &&
2046 sc->samples_per_frame && chunk_samples % sc->samples_per_frame) {
2047 av_log(mov->fc, AV_LOG_ERROR, "error unaligned chunk\n");
2051 if (sc->samples_per_frame >= 160) { // gsm
2052 count = chunk_samples / sc->samples_per_frame;
2053 } else if (sc->samples_per_frame > 1) {
2054 unsigned samples = (1024/sc->samples_per_frame)*sc->samples_per_frame;
2055 count = (chunk_samples+samples-1) / samples;
2057 count = (chunk_samples+1023) / 1024;
2060 if (i < sc->stsc_count - 1)
2061 chunk_count = sc->stsc_data[i+1].first - sc->stsc_data[i].first;
2063 chunk_count = sc->chunk_count - (sc->stsc_data[i].first - 1);
2064 total += chunk_count * count;
2067 av_dlog(mov->fc, "chunk count %d\n", total);
2068 if (total >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries)
2070 mem = av_realloc(st->index_entries, (st->nb_index_entries + total) * sizeof(*st->index_entries));
2073 st->index_entries = mem;
2074 st->index_entries_allocated_size = (st->nb_index_entries + total) * sizeof(*st->index_entries);
2077 for (i = 0; i < sc->chunk_count; i++) {
2078 current_offset = sc->chunk_offsets[i];
2079 if (stsc_index + 1 < sc->stsc_count &&
2080 i + 1 == sc->stsc_data[stsc_index + 1].first)
2082 chunk_samples = sc->stsc_data[stsc_index].count;
2084 while (chunk_samples > 0) {
2086 unsigned size, samples;
2088 if (sc->samples_per_frame >= 160) { // gsm
2089 samples = sc->samples_per_frame;
2090 size = sc->bytes_per_frame;
2092 if (sc->samples_per_frame > 1) {
2093 samples = FFMIN((1024 / sc->samples_per_frame)*
2094 sc->samples_per_frame, chunk_samples);
2095 size = (samples / sc->samples_per_frame) * sc->bytes_per_frame;
2097 samples = FFMIN(1024, chunk_samples);
2098 size = samples * sc->sample_size;
2102 if (st->nb_index_entries >= total) {
2103 av_log(mov->fc, AV_LOG_ERROR, "wrong chunk count %d\n", total);
2106 e = &st->index_entries[st->nb_index_entries++];
2107 e->pos = current_offset;
2108 e->timestamp = current_dts;
2110 e->min_distance = 0;
2111 e->flags = AVINDEX_KEYFRAME;
2112 av_dlog(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", "
2113 "size %d, duration %d\n", st->index, i, current_offset, current_dts,
2116 current_offset += size;
2117 current_dts += samples;
2118 chunk_samples -= samples;
2124 static int mov_open_dref(AVIOContext **pb, const char *src, MOVDref *ref,
2125 AVIOInterruptCB *int_cb, int use_absolute_path, AVFormatContext *fc)
2127 /* try relative path, we do not try the absolute because it can leak information about our
2128 system to an attacker */
2129 if (ref->nlvl_to > 0 && ref->nlvl_from > 0) {
2130 char filename[1024];
2131 const char *src_path;
2134 /* find a source dir */
2135 src_path = strrchr(src, '/');
2141 /* find a next level down to target */
2142 for (i = 0, l = strlen(ref->path) - 1; l >= 0; l--)
2143 if (ref->path[l] == '/') {
2144 if (i == ref->nlvl_to - 1)
2150 /* compose filename if next level down to target was found */
2151 if (i == ref->nlvl_to - 1 && src_path - src < sizeof(filename)) {
2152 memcpy(filename, src, src_path - src);
2153 filename[src_path - src] = 0;
2155 for (i = 1; i < ref->nlvl_from; i++)
2156 av_strlcat(filename, "../", 1024);
2158 av_strlcat(filename, ref->path + l + 1, 1024);
2160 if (!avio_open2(pb, filename, AVIO_FLAG_READ, int_cb, NULL))
2163 } else if (use_absolute_path) {
2164 av_log(fc, AV_LOG_WARNING, "Using absolute path on user request, "
2165 "this is a possible security issue\n");
2166 if (!avio_open2(pb, ref->path, AVIO_FLAG_READ, int_cb, NULL))
2170 return AVERROR(ENOENT);
2173 static int mov_read_trak(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2176 MOVStreamContext *sc;
2179 st = avformat_new_stream(c->fc, NULL);
2180 if (!st) return AVERROR(ENOMEM);
2181 st->id = c->fc->nb_streams;
2182 sc = av_mallocz(sizeof(MOVStreamContext));
2183 if (!sc) return AVERROR(ENOMEM);
2186 st->codec->codec_type = AVMEDIA_TYPE_DATA;
2187 sc->ffindex = st->index;
2189 if ((ret = mov_read_default(c, pb, atom)) < 0)
2193 if (sc->chunk_count && (!sc->stts_count || !sc->stsc_count ||
2194 (!sc->sample_size && !sc->sample_count))) {
2195 av_log(c->fc, AV_LOG_ERROR, "stream %d, missing mandatory atoms, broken header\n",
2200 if (sc->time_scale <= 0) {
2201 av_log(c->fc, AV_LOG_WARNING, "stream %d, timescale not set\n", st->index);
2202 sc->time_scale = c->time_scale;
2203 if (sc->time_scale <= 0)
2207 avpriv_set_pts_info(st, 64, 1, sc->time_scale);
2209 mov_build_index(c, st);
2211 if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) {
2212 MOVDref *dref = &sc->drefs[sc->dref_id - 1];
2213 if (mov_open_dref(&sc->pb, c->fc->filename, dref, &c->fc->interrupt_callback,
2214 c->use_absolute_path, c->fc) < 0)
2215 av_log(c->fc, AV_LOG_ERROR,
2216 "stream %d, error opening alias: path='%s', dir='%s', "
2217 "filename='%s', volume='%s', nlvl_from=%d, nlvl_to=%d\n",
2218 st->index, dref->path, dref->dir, dref->filename,
2219 dref->volume, dref->nlvl_from, dref->nlvl_to);
2223 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2224 if (!st->sample_aspect_ratio.num &&
2225 (st->codec->width != sc->width || st->codec->height != sc->height)) {
2226 st->sample_aspect_ratio = av_d2q(((double)st->codec->height * sc->width) /
2227 ((double)st->codec->width * sc->height), INT_MAX);
2230 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
2231 sc->time_scale*st->nb_frames, st->duration, INT_MAX);
2233 #if FF_API_R_FRAME_RATE
2234 if (sc->stts_count == 1 || (sc->stts_count == 2 && sc->stts_data[1].count == 1))
2235 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den,
2236 sc->time_scale, sc->stts_data[0].duration, INT_MAX);
2240 switch (st->codec->codec_id) {
2241 #if CONFIG_H261_DECODER
2242 case AV_CODEC_ID_H261:
2244 #if CONFIG_H263_DECODER
2245 case AV_CODEC_ID_H263:
2247 #if CONFIG_MPEG4_DECODER
2248 case AV_CODEC_ID_MPEG4:
2250 st->codec->width = 0; /* let decoder init width/height */
2251 st->codec->height= 0;
2255 /* Do not need those anymore. */
2256 av_freep(&sc->chunk_offsets);
2257 av_freep(&sc->stsc_data);
2258 av_freep(&sc->sample_sizes);
2259 av_freep(&sc->keyframes);
2260 av_freep(&sc->stts_data);
2261 av_freep(&sc->stps_data);
2262 av_freep(&sc->rap_group);
2267 static int mov_read_ilst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2270 c->itunes_metadata = 1;
2271 ret = mov_read_default(c, pb, atom);
2272 c->itunes_metadata = 0;
2276 static int mov_read_meta(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2278 while (atom.size > 8) {
2279 uint32_t tag = avio_rl32(pb);
2281 if (tag == MKTAG('h','d','l','r')) {
2282 avio_seek(pb, -8, SEEK_CUR);
2284 return mov_read_default(c, pb, atom);
2290 static int mov_read_tkhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2295 int64_t disp_transform[2];
2296 int display_matrix[3][2];
2298 MOVStreamContext *sc;
2301 if (c->fc->nb_streams < 1)
2303 st = c->fc->streams[c->fc->nb_streams-1];
2306 version = avio_r8(pb);
2307 avio_rb24(pb); /* flags */
2309 MOV_TRACK_ENABLED 0x0001
2310 MOV_TRACK_IN_MOVIE 0x0002
2311 MOV_TRACK_IN_PREVIEW 0x0004
2312 MOV_TRACK_IN_POSTER 0x0008
2319 avio_rb32(pb); /* creation time */
2320 avio_rb32(pb); /* modification time */
2322 st->id = (int)avio_rb32(pb); /* track id (NOT 0 !)*/
2323 avio_rb32(pb); /* reserved */
2325 /* highlevel (considering edits) duration in movie timebase */
2326 (version == 1) ? avio_rb64(pb) : avio_rb32(pb);
2327 avio_rb32(pb); /* reserved */
2328 avio_rb32(pb); /* reserved */
2330 avio_rb16(pb); /* layer */
2331 avio_rb16(pb); /* alternate group */
2332 avio_rb16(pb); /* volume */
2333 avio_rb16(pb); /* reserved */
2335 //read in the display matrix (outlined in ISO 14496-12, Section 6.2.2)
2336 // they're kept in fixed point format through all calculations
2337 // ignore u,v,z b/c we don't need the scale factor to calc aspect ratio
2338 for (i = 0; i < 3; i++) {
2339 display_matrix[i][0] = avio_rb32(pb); // 16.16 fixed point
2340 display_matrix[i][1] = avio_rb32(pb); // 16.16 fixed point
2341 avio_rb32(pb); // 2.30 fixed point (not used)
2344 width = avio_rb32(pb); // 16.16 fixed point track width
2345 height = avio_rb32(pb); // 16.16 fixed point track height
2346 sc->width = width >> 16;
2347 sc->height = height >> 16;
2349 //Assign clockwise rotate values based on transform matrix so that
2350 //we can compensate for iPhone orientation during capture.
2352 if (display_matrix[1][0] == -65536 && display_matrix[0][1] == 65536) {
2353 av_dict_set(&st->metadata, "rotate", "90", 0);
2356 if (display_matrix[0][0] == -65536 && display_matrix[1][1] == -65536) {
2357 av_dict_set(&st->metadata, "rotate", "180", 0);
2360 if (display_matrix[1][0] == 65536 && display_matrix[0][1] == -65536) {
2361 av_dict_set(&st->metadata, "rotate", "270", 0);
2364 // transform the display width/height according to the matrix
2365 // skip this if the display matrix is the default identity matrix
2366 // or if it is rotating the picture, ex iPhone 3GS
2367 // to keep the same scale, use [width height 1<<16]
2368 if (width && height &&
2369 ((display_matrix[0][0] != 65536 ||
2370 display_matrix[1][1] != 65536) &&
2371 !display_matrix[0][1] &&
2372 !display_matrix[1][0] &&
2373 !display_matrix[2][0] && !display_matrix[2][1])) {
2374 for (i = 0; i < 2; i++)
2376 (int64_t) width * display_matrix[0][i] +
2377 (int64_t) height * display_matrix[1][i] +
2378 ((int64_t) display_matrix[2][i] << 16);
2380 //sample aspect ratio is new width/height divided by old width/height
2381 st->sample_aspect_ratio = av_d2q(
2382 ((double) disp_transform[0] * height) /
2383 ((double) disp_transform[1] * width), INT_MAX);
2388 static int mov_read_tfhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2390 MOVFragment *frag = &c->fragment;
2391 MOVTrackExt *trex = NULL;
2392 int flags, track_id, i;
2394 avio_r8(pb); /* version */
2395 flags = avio_rb24(pb);
2397 track_id = avio_rb32(pb);
2399 return AVERROR_INVALIDDATA;
2400 frag->track_id = track_id;
2401 for (i = 0; i < c->trex_count; i++)
2402 if (c->trex_data[i].track_id == frag->track_id) {
2403 trex = &c->trex_data[i];
2407 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding trex\n");
2408 return AVERROR_INVALIDDATA;
2411 frag->base_data_offset = flags & MOV_TFHD_BASE_DATA_OFFSET ?
2412 avio_rb64(pb) : frag->moof_offset;
2413 frag->stsd_id = flags & MOV_TFHD_STSD_ID ? avio_rb32(pb) : trex->stsd_id;
2415 frag->duration = flags & MOV_TFHD_DEFAULT_DURATION ?
2416 avio_rb32(pb) : trex->duration;
2417 frag->size = flags & MOV_TFHD_DEFAULT_SIZE ?
2418 avio_rb32(pb) : trex->size;
2419 frag->flags = flags & MOV_TFHD_DEFAULT_FLAGS ?
2420 avio_rb32(pb) : trex->flags;
2421 av_dlog(c->fc, "frag flags 0x%x\n", frag->flags);
2425 static int mov_read_chap(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2427 c->chapter_track = avio_rb32(pb);
2431 static int mov_read_trex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2435 if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data))
2436 return AVERROR_INVALIDDATA;
2437 trex = av_realloc(c->trex_data, (c->trex_count+1)*sizeof(*c->trex_data));
2439 return AVERROR(ENOMEM);
2441 c->fc->duration = AV_NOPTS_VALUE; // the duration from mvhd is not representing the whole file when fragments are used.
2443 c->trex_data = trex;
2444 trex = &c->trex_data[c->trex_count++];
2445 avio_r8(pb); /* version */
2446 avio_rb24(pb); /* flags */
2447 trex->track_id = avio_rb32(pb);
2448 trex->stsd_id = avio_rb32(pb);
2449 trex->duration = avio_rb32(pb);
2450 trex->size = avio_rb32(pb);
2451 trex->flags = avio_rb32(pb);
2455 static int mov_read_trun(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2457 MOVFragment *frag = &c->fragment;
2458 AVStream *st = NULL;
2459 MOVStreamContext *sc;
2463 int data_offset = 0;
2464 unsigned entries, first_sample_flags = frag->flags;
2465 int flags, distance, i, found_keyframe = 0;
2467 for (i = 0; i < c->fc->nb_streams; i++) {
2468 if (c->fc->streams[i]->id == frag->track_id) {
2469 st = c->fc->streams[i];
2474 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id);
2475 return AVERROR_INVALIDDATA;
2478 if (sc->pseudo_stream_id+1 != frag->stsd_id)
2480 avio_r8(pb); /* version */
2481 flags = avio_rb24(pb);
2482 entries = avio_rb32(pb);
2483 av_dlog(c->fc, "flags 0x%x entries %d\n", flags, entries);
2485 /* Always assume the presence of composition time offsets.
2486 * Without this assumption, for instance, we cannot deal with a track in fragmented movies that meet the following.
2487 * 1) in the initial movie, there are no samples.
2488 * 2) in the first movie fragment, there is only one sample without composition time offset.
2489 * 3) in the subsequent movie fragments, there are samples with composition time offset. */
2490 if (!sc->ctts_count && sc->sample_count)
2492 /* Complement ctts table if moov atom doesn't have ctts atom. */
2493 ctts_data = av_malloc(sizeof(*sc->ctts_data));
2495 return AVERROR(ENOMEM);
2496 sc->ctts_data = ctts_data;
2497 sc->ctts_data[sc->ctts_count].count = sc->sample_count;
2498 sc->ctts_data[sc->ctts_count].duration = 0;
2501 if ((uint64_t)entries+sc->ctts_count >= UINT_MAX/sizeof(*sc->ctts_data))
2502 return AVERROR_INVALIDDATA;
2503 ctts_data = av_realloc(sc->ctts_data,
2504 (entries+sc->ctts_count)*sizeof(*sc->ctts_data));
2506 return AVERROR(ENOMEM);
2507 sc->ctts_data = ctts_data;
2509 if (flags & MOV_TRUN_DATA_OFFSET) data_offset = avio_rb32(pb);
2510 if (flags & MOV_TRUN_FIRST_SAMPLE_FLAGS) first_sample_flags = avio_rb32(pb);
2511 dts = sc->track_end - sc->time_offset;
2512 offset = frag->base_data_offset + data_offset;
2514 av_dlog(c->fc, "first sample flags 0x%x\n", first_sample_flags);
2515 for (i = 0; i < entries && !pb->eof_reached; i++) {
2516 unsigned sample_size = frag->size;
2517 int sample_flags = i ? frag->flags : first_sample_flags;
2518 unsigned sample_duration = frag->duration;
2521 if (flags & MOV_TRUN_SAMPLE_DURATION) sample_duration = avio_rb32(pb);
2522 if (flags & MOV_TRUN_SAMPLE_SIZE) sample_size = avio_rb32(pb);
2523 if (flags & MOV_TRUN_SAMPLE_FLAGS) sample_flags = avio_rb32(pb);
2524 sc->ctts_data[sc->ctts_count].count = 1;
2525 sc->ctts_data[sc->ctts_count].duration = (flags & MOV_TRUN_SAMPLE_CTS) ?
2528 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
2530 else if (!found_keyframe)
2531 keyframe = found_keyframe =
2532 !(sample_flags & (MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC |
2533 MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES));
2536 av_add_index_entry(st, offset, dts, sample_size, distance,
2537 keyframe ? AVINDEX_KEYFRAME : 0);
2538 av_dlog(c->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
2539 "size %d, distance %d, keyframe %d\n", st->index, sc->sample_count+i,
2540 offset, dts, sample_size, distance, keyframe);
2542 dts += sample_duration;
2543 offset += sample_size;
2544 sc->data_size += sample_size;
2547 if (pb->eof_reached)
2550 frag->moof_offset = offset;
2551 st->duration = sc->track_end = dts + sc->time_offset;
2555 /* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
2556 /* like the files created with Adobe Premiere 5.0, for samples see */
2557 /* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
2558 static int mov_read_wide(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2563 return 0; /* continue */
2564 if (avio_rb32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
2565 avio_skip(pb, atom.size - 4);
2568 atom.type = avio_rl32(pb);
2570 if (atom.type != MKTAG('m','d','a','t')) {
2571 avio_skip(pb, atom.size);
2574 err = mov_read_mdat(c, pb, atom);
2578 static int mov_read_cmov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2583 uint8_t *moov_data; /* uncompressed data */
2584 long cmov_len, moov_len;
2587 avio_rb32(pb); /* dcom atom */
2588 if (avio_rl32(pb) != MKTAG('d','c','o','m'))
2589 return AVERROR_INVALIDDATA;
2590 if (avio_rl32(pb) != MKTAG('z','l','i','b')) {
2591 av_log(c->fc, AV_LOG_ERROR, "unknown compression for cmov atom !\n");
2592 return AVERROR_INVALIDDATA;
2594 avio_rb32(pb); /* cmvd atom */
2595 if (avio_rl32(pb) != MKTAG('c','m','v','d'))
2596 return AVERROR_INVALIDDATA;
2597 moov_len = avio_rb32(pb); /* uncompressed size */
2598 cmov_len = atom.size - 6 * 4;
2600 cmov_data = av_malloc(cmov_len);
2602 return AVERROR(ENOMEM);
2603 moov_data = av_malloc(moov_len);
2606 return AVERROR(ENOMEM);
2608 avio_read(pb, cmov_data, cmov_len);
2609 if (uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
2610 goto free_and_return;
2611 if (ffio_init_context(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
2612 goto free_and_return;
2613 atom.type = MKTAG('m','o','o','v');
2614 atom.size = moov_len;
2615 ret = mov_read_default(c, &ctx, atom);
2621 av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
2622 return AVERROR(ENOSYS);
2626 /* edit list atom */
2627 static int mov_read_elst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2629 MOVStreamContext *sc;
2630 int i, edit_count, version, edit_start_index = 0;
2631 int unsupported = 0;
2633 if (c->fc->nb_streams < 1 || c->ignore_editlist)
2635 sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
2637 version = avio_r8(pb); /* version */
2638 avio_rb24(pb); /* flags */
2639 edit_count = avio_rb32(pb); /* entries */
2641 if ((uint64_t)edit_count*12+8 > atom.size)
2642 return AVERROR_INVALIDDATA;
2644 av_dlog(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, edit_count);
2645 for (i=0; i<edit_count; i++){
2650 duration = avio_rb64(pb);
2651 time = avio_rb64(pb);
2653 duration = avio_rb32(pb); /* segment duration */
2654 time = (int32_t)avio_rb32(pb); /* media time */
2656 rate = avio_rb32(pb);
2657 if (i == 0 && time == -1) {
2658 sc->empty_duration = duration;
2659 edit_start_index = 1;
2660 } else if (i == edit_start_index && time >= 0)
2661 sc->start_time = time;
2665 av_dlog(c->fc, "duration=%"PRId64" time=%"PRId64" rate=%f\n",
2666 duration, time, rate / 65536.0);
2670 av_log(c->fc, AV_LOG_WARNING, "multiple edit list entries, "
2671 "a/v desync might occur, patch welcome\n");
2676 static int mov_read_chan2(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2681 ff_mov_read_chan(c->fc, pb, c->fc->streams[0], atom.size - 4);
2685 static int mov_read_tref(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2688 MOVStreamContext *sc;
2690 if (c->fc->nb_streams < 1)
2691 return AVERROR_INVALIDDATA;
2692 sc = c->fc->streams[c->fc->nb_streams - 1]->priv_data;
2694 size = avio_rb32(pb);
2698 sc->trefs_count = (size - 4) / 8;
2699 sc->trefs = av_malloc(sc->trefs_count * sizeof(*sc->trefs));
2701 return AVERROR(ENOMEM);
2703 sc->tref_type = avio_rl32(pb);
2704 for (i = 0; i < sc->trefs_count; i++)
2705 sc->trefs[i] = avio_rb32(pb);
2709 static const MOVParseTableEntry mov_default_parse_table[] = {
2710 { MKTAG('A','C','L','R'), mov_read_avid },
2711 { MKTAG('A','P','R','G'), mov_read_avid },
2712 { MKTAG('A','A','L','P'), mov_read_avid },
2713 { MKTAG('A','R','E','S'), mov_read_avid },
2714 { MKTAG('a','v','s','s'), mov_read_avss },
2715 { MKTAG('c','h','p','l'), mov_read_chpl },
2716 { MKTAG('c','o','6','4'), mov_read_stco },
2717 { MKTAG('c','t','t','s'), mov_read_ctts }, /* composition time to sample */
2718 { MKTAG('d','i','n','f'), mov_read_default },
2719 { MKTAG('d','r','e','f'), mov_read_dref },
2720 { MKTAG('e','d','t','s'), mov_read_default },
2721 { MKTAG('e','l','s','t'), mov_read_elst },
2722 { MKTAG('e','n','d','a'), mov_read_enda },
2723 { MKTAG('f','i','e','l'), mov_read_fiel },
2724 { MKTAG('f','t','y','p'), mov_read_ftyp },
2725 { MKTAG('g','l','b','l'), mov_read_glbl },
2726 { MKTAG('h','d','l','r'), mov_read_hdlr },
2727 { MKTAG('i','l','s','t'), mov_read_ilst },
2728 { MKTAG('j','p','2','h'), mov_read_jp2h },
2729 { MKTAG('m','d','a','t'), mov_read_mdat },
2730 { MKTAG('m','d','h','d'), mov_read_mdhd },
2731 { MKTAG('m','d','i','a'), mov_read_default },
2732 { MKTAG('m','e','t','a'), mov_read_meta },
2733 { MKTAG('m','i','n','f'), mov_read_default },
2734 { MKTAG('m','o','o','f'), mov_read_moof },
2735 { MKTAG('m','o','o','v'), mov_read_moov },
2736 { MKTAG('m','v','e','x'), mov_read_default },
2737 { MKTAG('m','v','h','d'), mov_read_mvhd },
2738 { MKTAG('S','M','I',' '), mov_read_svq3 },
2739 { MKTAG('a','l','a','c'), mov_read_alac }, /* alac specific atom */
2740 { MKTAG('a','v','c','C'), mov_read_glbl },
2741 { MKTAG('p','a','s','p'), mov_read_pasp },
2742 { MKTAG('s','t','b','l'), mov_read_default },
2743 { MKTAG('s','t','c','o'), mov_read_stco },
2744 { MKTAG('s','t','p','s'), mov_read_stps },
2745 { MKTAG('s','t','r','f'), mov_read_strf },
2746 { MKTAG('s','t','s','c'), mov_read_stsc },
2747 { MKTAG('s','t','s','d'), mov_read_stsd }, /* sample description */
2748 { MKTAG('s','t','s','s'), mov_read_stss }, /* sync sample */
2749 { MKTAG('s','t','s','z'), mov_read_stsz }, /* sample size */
2750 { MKTAG('s','t','t','s'), mov_read_stts },
2751 { MKTAG('s','t','z','2'), mov_read_stsz }, /* compact sample size */
2752 { MKTAG('t','k','h','d'), mov_read_tkhd }, /* track header */
2753 { MKTAG('t','f','h','d'), mov_read_tfhd }, /* track fragment header */
2754 { MKTAG('t','r','a','k'), mov_read_trak },
2755 { MKTAG('t','r','a','f'), mov_read_default },
2756 { MKTAG('t','r','e','f'), mov_read_tref },
2757 { MKTAG('c','h','a','p'), mov_read_chap },
2758 { MKTAG('t','r','e','x'), mov_read_trex },
2759 { MKTAG('t','r','u','n'), mov_read_trun },
2760 { MKTAG('u','d','t','a'), mov_read_default },
2761 { MKTAG('w','a','v','e'), mov_read_wave },
2762 { MKTAG('e','s','d','s'), mov_read_esds },
2763 { MKTAG('d','a','c','3'), mov_read_dac3 }, /* AC-3 info */
2764 { MKTAG('d','e','c','3'), mov_read_dec3 }, /* EAC-3 info */
2765 { MKTAG('w','i','d','e'), mov_read_wide }, /* place holder */
2766 { MKTAG('w','f','e','x'), mov_read_wfex },
2767 { MKTAG('c','m','o','v'), mov_read_cmov },
2768 { MKTAG('c','h','a','n'), mov_read_chan }, /* channel layout */
2769 { MKTAG('d','v','c','1'), mov_read_dvc1 },
2770 { MKTAG('s','b','g','p'), mov_read_sbgp },
2774 static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2776 int64_t total_size = 0;
2781 atom.size = INT64_MAX;
2782 while (total_size + 8 <= atom.size && !url_feof(pb)) {
2783 int (*parse)(MOVContext*, AVIOContext*, MOVAtom) = NULL;
2786 if (atom.size >= 8) {
2787 a.size = avio_rb32(pb);
2788 a.type = avio_rl32(pb);
2789 if (atom.type != MKTAG('r','o','o','t') &&
2790 atom.type != MKTAG('m','o','o','v'))
2792 if (a.type == MKTAG('t','r','a','k') || a.type == MKTAG('m','d','a','t'))
2794 av_log(c->fc, AV_LOG_ERROR, "Broken file, trak/mdat not at top-level\n");
2800 if (a.size == 1) { /* 64 bit extended size */
2801 a.size = avio_rb64(pb) - 8;
2805 av_dlog(c->fc, "type: %08x '%.4s' parent:'%.4s' sz: %"PRId64" %"PRId64" %"PRId64"\n",
2806 a.type, (char*)&a.type, (char*)&atom.type, a.size, total_size, atom.size);
2808 a.size = atom.size - total_size + 8;
2813 a.size = FFMIN(a.size, atom.size - total_size);
2815 for (i = 0; mov_default_parse_table[i].type; i++)
2816 if (mov_default_parse_table[i].type == a.type) {
2817 parse = mov_default_parse_table[i].parse;
2821 // container is user data
2822 if (!parse && (atom.type == MKTAG('u','d','t','a') ||
2823 atom.type == MKTAG('i','l','s','t')))
2824 parse = mov_read_udta_string;
2826 if (!parse) { /* skip leaf atoms data */
2827 avio_skip(pb, a.size);
2829 int64_t start_pos = avio_tell(pb);
2831 int err = parse(c, pb, a);
2834 if (c->found_moov && c->found_mdat &&
2835 ((!pb->seekable || c->fc->flags & AVFMT_FLAG_IGNIDX) ||
2836 start_pos + a.size == avio_size(pb))) {
2837 if (!pb->seekable || c->fc->flags & AVFMT_FLAG_IGNIDX)
2838 c->next_root_atom = start_pos + a.size;
2841 left = a.size - avio_tell(pb) + start_pos;
2842 if (left > 0) /* skip garbage at atom end */
2843 avio_skip(pb, left);
2845 av_log(c->fc, AV_LOG_DEBUG, "undoing overread of %"PRId64" in '%.4s'\n", -left, (char*)&a.type);
2846 avio_seek(pb, left, SEEK_CUR);
2850 total_size += a.size;
2853 if (total_size < atom.size && atom.size < 0x7ffff)
2854 avio_skip(pb, atom.size - total_size);
2859 static int mov_probe(AVProbeData *p)
2861 unsigned int offset;
2865 /* check file header */
2868 /* ignore invalid offset */
2869 if ((offset + 8) > (unsigned int)p->buf_size)
2871 tag = AV_RL32(p->buf + offset + 4);
2873 /* check for obvious tags */
2874 case MKTAG('j','P',' ',' '): /* jpeg 2000 signature */
2875 case MKTAG('m','o','o','v'):
2876 case MKTAG('m','d','a','t'):
2877 case MKTAG('p','n','o','t'): /* detect movs with preview pics like ew.mov and april.mov */
2878 case MKTAG('u','d','t','a'): /* Packet Video PVAuthor adds this and a lot of more junk */
2879 case MKTAG('f','t','y','p'):
2880 return AVPROBE_SCORE_MAX;
2881 /* those are more common words, so rate then a bit less */
2882 case MKTAG('e','d','i','w'): /* xdcam files have reverted first tags */
2883 case MKTAG('w','i','d','e'):
2884 case MKTAG('f','r','e','e'):
2885 case MKTAG('j','u','n','k'):
2886 case MKTAG('p','i','c','t'):
2887 return AVPROBE_SCORE_MAX - 5;
2888 case MKTAG(0x82,0x82,0x7f,0x7d):
2889 case MKTAG('s','k','i','p'):
2890 case MKTAG('u','u','i','d'):
2891 case MKTAG('p','r','f','l'):
2892 offset = AV_RB32(p->buf+offset) + offset;
2893 /* if we only find those cause probedata is too small at least rate them */
2894 score = AVPROBE_SCORE_MAX - 50;
2897 /* unrecognized tag */
2903 // must be done after parsing all trak because there's no order requirement
2904 static void mov_read_chapters(AVFormatContext *s)
2906 MOVContext *mov = s->priv_data;
2907 AVStream *st = NULL;
2908 MOVStreamContext *sc;
2912 for (i = 0; i < s->nb_streams; i++)
2913 if (s->streams[i]->id == mov->chapter_track) {
2918 av_log(s, AV_LOG_ERROR, "Referenced QT chapter track not found\n");
2922 st->discard = AVDISCARD_ALL;
2924 cur_pos = avio_tell(sc->pb);
2926 for (i = 0; i < st->nb_index_entries; i++) {
2927 AVIndexEntry *sample = &st->index_entries[i];
2928 int64_t end = i+1 < st->nb_index_entries ? st->index_entries[i+1].timestamp : st->duration;
2933 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
2934 av_log(s, AV_LOG_ERROR, "Chapter %d not found in file\n", i);
2938 // the first two bytes are the length of the title
2939 len = avio_rb16(sc->pb);
2940 if (len > sample->size-2)
2942 title_len = 2*len + 1;
2943 if (!(title = av_mallocz(title_len)))
2946 // The samples could theoretically be in any encoding if there's an encd
2947 // atom following, but in practice are only utf-8 or utf-16, distinguished
2948 // instead by the presence of a BOM
2952 ch = avio_rb16(sc->pb);
2954 avio_get_str16be(sc->pb, len, title, title_len);
2955 else if (ch == 0xfffe)
2956 avio_get_str16le(sc->pb, len, title, title_len);
2959 if (len == 1 || len == 2)
2962 avio_get_str(sc->pb, INT_MAX, title + 2, len - 1);
2966 avpriv_new_chapter(s, i, st->time_base, sample->timestamp, end, title);
2970 avio_seek(sc->pb, cur_pos, SEEK_SET);
2973 static int parse_timecode_in_framenum_format(AVFormatContext *s, AVStream *st,
2974 uint32_t value, int flags)
2977 char buf[AV_TIMECODE_STR_SIZE];
2978 AVRational rate = {st->codec->time_base.den,
2979 st->codec->time_base.num};
2980 int ret = av_timecode_init(&tc, rate, flags, 0, s);
2983 av_dict_set(&st->metadata, "timecode",
2984 av_timecode_make_string(&tc, buf, value), 0);
2988 static int mov_read_timecode_track(AVFormatContext *s, AVStream *st)
2990 MOVStreamContext *sc = st->priv_data;
2992 int64_t cur_pos = avio_tell(sc->pb);
2995 if (!st->nb_index_entries)
2998 avio_seek(sc->pb, st->index_entries->pos, SEEK_SET);
2999 value = avio_rb32(s->pb);
3001 if (sc->tmcd_flags & 0x0001) flags |= AV_TIMECODE_FLAG_DROPFRAME;
3002 if (sc->tmcd_flags & 0x0002) flags |= AV_TIMECODE_FLAG_24HOURSMAX;
3003 if (sc->tmcd_flags & 0x0004) flags |= AV_TIMECODE_FLAG_ALLOWNEGATIVE;
3005 /* Assume Counter flag is set to 1 in tmcd track (even though it is likely
3006 * not the case) and thus assume "frame number format" instead of QT one.
3007 * No sample with tmcd track can be found with a QT timecode at the moment,
3008 * despite what the tmcd track "suggests" (Counter flag set to 0 means QT
3010 parse_timecode_in_framenum_format(s, st, value, flags);
3012 avio_seek(sc->pb, cur_pos, SEEK_SET);
3016 static int mov_read_close(AVFormatContext *s)
3018 MOVContext *mov = s->priv_data;
3021 for (i = 0; i < s->nb_streams; i++) {
3022 AVStream *st = s->streams[i];
3023 MOVStreamContext *sc = st->priv_data;
3025 av_freep(&sc->ctts_data);
3026 for (j = 0; j < sc->drefs_count; j++) {
3027 av_freep(&sc->drefs[j].path);
3028 av_freep(&sc->drefs[j].dir);
3030 av_freep(&sc->drefs);
3031 av_freep(&sc->trefs);
3032 if (sc->pb && sc->pb != s->pb)
3035 av_freep(&sc->chunk_offsets);
3036 av_freep(&sc->keyframes);
3037 av_freep(&sc->sample_sizes);
3038 av_freep(&sc->stps_data);
3039 av_freep(&sc->stsc_data);
3040 av_freep(&sc->stts_data);
3043 if (mov->dv_demux) {
3044 for (i = 0; i < mov->dv_fctx->nb_streams; i++) {
3045 av_freep(&mov->dv_fctx->streams[i]->codec);
3046 av_freep(&mov->dv_fctx->streams[i]);
3048 av_freep(&mov->dv_fctx);
3049 av_freep(&mov->dv_demux);
3052 av_freep(&mov->trex_data);
3057 static int tmcd_is_referenced(AVFormatContext *s, int tmcd_id)
3061 for (i = 0; i < s->nb_streams; i++) {
3062 AVStream *st = s->streams[i];
3063 MOVStreamContext *sc = st->priv_data;
3065 if (s->streams[i]->codec->codec_type != AVMEDIA_TYPE_VIDEO)
3067 for (j = 0; j < sc->trefs_count; j++)
3068 if (tmcd_id == sc->trefs[j])
3074 /* look for a tmcd track not referenced by any video track, and export it globally */
3075 static void export_orphan_timecode(AVFormatContext *s)
3079 for (i = 0; i < s->nb_streams; i++) {
3080 AVStream *st = s->streams[i];
3082 if (st->codec->codec_tag == MKTAG('t','m','c','d') &&
3083 !tmcd_is_referenced(s, i + 1)) {
3084 AVDictionaryEntry *tcr = av_dict_get(st->metadata, "timecode", NULL, 0);
3086 av_dict_set(&s->metadata, "timecode", tcr->value, 0);
3093 static int mov_read_header(AVFormatContext *s)
3095 MOVContext *mov = s->priv_data;
3096 AVIOContext *pb = s->pb;
3098 MOVAtom atom = { AV_RL32("root") };
3101 /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
3103 atom.size = avio_size(pb);
3105 atom.size = INT64_MAX;
3107 /* check MOV header */
3108 if ((err = mov_read_default(mov, pb, atom)) < 0) {
3109 av_log(s, AV_LOG_ERROR, "error reading header: %d\n", err);
3113 if (!mov->found_moov) {
3114 av_log(s, AV_LOG_ERROR, "moov atom not found\n");
3116 return AVERROR_INVALIDDATA;
3118 av_dlog(mov->fc, "on_parse_exit_offset=%"PRId64"\n", avio_tell(pb));
3121 if (mov->chapter_track > 0)
3122 mov_read_chapters(s);
3123 for (i = 0; i < s->nb_streams; i++)
3124 if (s->streams[i]->codec->codec_tag == AV_RL32("tmcd"))
3125 mov_read_timecode_track(s, s->streams[i]);
3128 /* copy timecode metadata from tmcd tracks to the related video streams */
3129 for (i = 0; i < s->nb_streams; i++) {
3130 AVStream *st = s->streams[i];
3131 MOVStreamContext *sc = st->priv_data;
3132 if (sc->tref_type == AV_RL32("tmcd") && sc->trefs_count) {
3133 AVDictionaryEntry *tcr;
3134 int tmcd_st_id = sc->trefs[0] - 1;
3136 if (tmcd_st_id < 0 || tmcd_st_id >= s->nb_streams)
3138 tcr = av_dict_get(s->streams[tmcd_st_id]->metadata, "timecode", NULL, 0);
3140 av_dict_set(&st->metadata, "timecode", tcr->value, 0);
3143 export_orphan_timecode(s);
3145 for (i = 0; i < s->nb_streams; i++) {
3146 AVStream *st = s->streams[i];
3147 MOVStreamContext *sc = st->priv_data;
3148 if(st->codec->codec_type == AVMEDIA_TYPE_AUDIO && st->codec->codec_id == AV_CODEC_ID_AAC) {
3149 st->skip_samples = sc->start_pad;
3153 if (mov->trex_data) {
3154 for (i = 0; i < s->nb_streams; i++) {
3155 AVStream *st = s->streams[i];
3156 MOVStreamContext *sc = st->priv_data;
3158 st->codec->bit_rate = sc->data_size * 8 * sc->time_scale / st->duration;
3165 static AVIndexEntry *mov_find_next_sample(AVFormatContext *s, AVStream **st)
3167 AVIndexEntry *sample = NULL;
3168 int64_t best_dts = INT64_MAX;
3170 for (i = 0; i < s->nb_streams; i++) {
3171 AVStream *avst = s->streams[i];
3172 MOVStreamContext *msc = avst->priv_data;
3173 if (msc->pb && msc->current_sample < avst->nb_index_entries) {
3174 AVIndexEntry *current_sample = &avst->index_entries[msc->current_sample];
3175 int64_t dts = av_rescale(current_sample->timestamp, AV_TIME_BASE, msc->time_scale);
3176 av_dlog(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
3177 if (!sample || (!s->pb->seekable && current_sample->pos < sample->pos) ||
3179 ((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb &&
3180 ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
3181 (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) {
3182 sample = current_sample;
3191 static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
3193 MOVContext *mov = s->priv_data;
3194 MOVStreamContext *sc;
3195 AVIndexEntry *sample;
3196 AVStream *st = NULL;
3200 sample = mov_find_next_sample(s, &st);
3202 mov->found_mdat = 0;
3203 if (!mov->next_root_atom)
3205 avio_seek(s->pb, mov->next_root_atom, SEEK_SET);
3206 mov->next_root_atom = 0;
3207 if (mov_read_default(mov, s->pb, (MOVAtom){ AV_RL32("root"), INT64_MAX }) < 0 ||
3210 av_dlog(s, "read fragments, offset 0x%"PRIx64"\n", avio_tell(s->pb));
3214 /* must be done just before reading, to avoid infinite loop on sample */
3215 sc->current_sample++;
3217 if (st->discard != AVDISCARD_ALL) {
3218 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
3219 av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
3220 sc->ffindex, sample->pos);
3221 return AVERROR_INVALIDDATA;
3223 ret = av_get_packet(sc->pb, pkt, sample->size);
3226 if (sc->has_palette) {
3229 pal = av_packet_new_side_data(pkt, AV_PKT_DATA_PALETTE, AVPALETTE_SIZE);
3231 av_log(mov->fc, AV_LOG_ERROR, "Cannot append palette to packet\n");
3233 memcpy(pal, sc->palette, AVPALETTE_SIZE);
3234 sc->has_palette = 0;
3237 #if CONFIG_DV_DEMUXER
3238 if (mov->dv_demux && sc->dv_audio_container) {
3239 avpriv_dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size, pkt->pos);
3242 ret = avpriv_dv_get_packet(mov->dv_demux, pkt);
3249 pkt->stream_index = sc->ffindex;
3250 pkt->dts = sample->timestamp;
3251 if (sc->ctts_data && sc->ctts_index < sc->ctts_count) {
3252 pkt->pts = pkt->dts + sc->dts_shift + sc->ctts_data[sc->ctts_index].duration;
3253 /* update ctts context */
3255 if (sc->ctts_index < sc->ctts_count &&
3256 sc->ctts_data[sc->ctts_index].count == sc->ctts_sample) {
3258 sc->ctts_sample = 0;
3261 pkt->dts = AV_NOPTS_VALUE;
3263 int64_t next_dts = (sc->current_sample < st->nb_index_entries) ?
3264 st->index_entries[sc->current_sample].timestamp : st->duration;
3265 pkt->duration = next_dts - pkt->dts;
3266 pkt->pts = pkt->dts;
3268 if (st->discard == AVDISCARD_ALL)
3270 pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? AV_PKT_FLAG_KEY : 0;
3271 pkt->pos = sample->pos;
3272 av_dlog(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n",
3273 pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
3277 static int mov_seek_stream(AVFormatContext *s, AVStream *st, int64_t timestamp, int flags)
3279 MOVStreamContext *sc = st->priv_data;
3280 int sample, time_sample;
3283 sample = av_index_search_timestamp(st, timestamp, flags);
3284 av_dlog(s, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
3285 if (sample < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
3287 if (sample < 0) /* not sure what to do */
3288 return AVERROR_INVALIDDATA;
3289 sc->current_sample = sample;
3290 av_dlog(s, "stream %d, found sample %d\n", st->index, sc->current_sample);
3291 /* adjust ctts index */
3292 if (sc->ctts_data) {
3294 for (i = 0; i < sc->ctts_count; i++) {
3295 int next = time_sample + sc->ctts_data[i].count;
3296 if (next > sc->current_sample) {
3298 sc->ctts_sample = sc->current_sample - time_sample;
3307 static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
3310 int64_t seek_timestamp, timestamp;
3314 if (stream_index >= s->nb_streams)
3315 return AVERROR_INVALIDDATA;
3317 st = s->streams[stream_index];
3318 sample = mov_seek_stream(s, st, sample_time, flags);
3322 /* adjust seek timestamp to found sample timestamp */
3323 seek_timestamp = st->index_entries[sample].timestamp;
3325 for (i = 0; i < s->nb_streams; i++) {
3326 MOVStreamContext *sc = s->streams[i]->priv_data;
3328 st->skip_samples = (sample_time <= 0) ? sc->start_pad : 0;
3330 if (stream_index == i)
3333 timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
3334 mov_seek_stream(s, st, timestamp, flags);
3339 static const AVOption options[] = {
3340 {"use_absolute_path",
3341 "allow using absolute path when opening alias, this is a possible security issue",
3342 offsetof(MOVContext, use_absolute_path), FF_OPT_TYPE_INT, {.i64 = 0},
3343 0, 1, AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_DECODING_PARAM},
3344 {"ignore_editlist", "", offsetof(MOVContext, ignore_editlist), FF_OPT_TYPE_INT, {.i64 = 0},
3345 0, 1, AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_DECODING_PARAM},
3349 static const AVClass class = {
3350 .class_name = "mov,mp4,m4a,3gp,3g2,mj2",
3351 .item_name = av_default_item_name,
3353 .version = LIBAVUTIL_VERSION_INT,
3356 AVInputFormat ff_mov_demuxer = {
3357 .name = "mov,mp4,m4a,3gp,3g2,mj2",
3358 .long_name = NULL_IF_CONFIG_SMALL("QuickTime / MOV"),
3359 .priv_data_size = sizeof(MOVContext),
3360 .read_probe = mov_probe,
3361 .read_header = mov_read_header,
3362 .read_packet = mov_read_packet,
3363 .read_close = mov_read_close,
3364 .read_seek = mov_read_seek,
3365 .priv_class = &class,