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 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 = AV_CODEC_ID_MJPEG; break;
181 case 0xe: id = AV_CODEC_ID_PNG; break;
182 case 0x1b: id = AV_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_dref(MOVContext *c, AVIOContext *pb, MOVAtom atom)
361 MOVStreamContext *sc;
364 if (c->fc->nb_streams < 1)
366 st = c->fc->streams[c->fc->nb_streams-1];
369 avio_rb32(pb); // version + flags
370 entries = avio_rb32(pb);
371 if (entries >= UINT_MAX / sizeof(*sc->drefs))
372 return AVERROR_INVALIDDATA;
375 sc->drefs = av_mallocz(entries * sizeof(*sc->drefs));
377 return AVERROR(ENOMEM);
378 sc->drefs_count = entries;
380 for (i = 0; i < sc->drefs_count; i++) {
381 MOVDref *dref = &sc->drefs[i];
382 uint32_t size = avio_rb32(pb);
383 int64_t next = avio_tell(pb) + size - 4;
386 return AVERROR_INVALIDDATA;
388 dref->type = avio_rl32(pb);
389 avio_rb32(pb); // version + flags
390 av_dlog(c->fc, "type %.4s size %d\n", (char*)&dref->type, size);
392 if (dref->type == MKTAG('a','l','i','s') && size > 150) {
393 /* macintosh alias record */
394 uint16_t volume_len, len;
399 volume_len = avio_r8(pb);
400 volume_len = FFMIN(volume_len, 27);
401 avio_read(pb, dref->volume, 27);
402 dref->volume[volume_len] = 0;
403 av_log(c->fc, AV_LOG_DEBUG, "volume %s, len %d\n", dref->volume, volume_len);
408 len = FFMIN(len, 63);
409 avio_read(pb, dref->filename, 63);
410 dref->filename[len] = 0;
411 av_log(c->fc, AV_LOG_DEBUG, "filename %s, len %d\n", dref->filename, len);
415 /* read next level up_from_alias/down_to_target */
416 dref->nlvl_from = avio_rb16(pb);
417 dref->nlvl_to = avio_rb16(pb);
418 av_log(c->fc, AV_LOG_DEBUG, "nlvl from %d, nlvl to %d\n",
419 dref->nlvl_from, dref->nlvl_to);
423 for (type = 0; type != -1 && avio_tell(pb) < next; ) {
426 type = avio_rb16(pb);
428 av_log(c->fc, AV_LOG_DEBUG, "type %d, len %d\n", type, len);
431 if (type == 2) { // absolute path
433 dref->path = av_mallocz(len+1);
435 return AVERROR(ENOMEM);
436 avio_read(pb, dref->path, len);
437 if (len > volume_len && !strncmp(dref->path, dref->volume, volume_len)) {
439 memmove(dref->path, dref->path+volume_len, len);
442 for (j = 0; j < len; j++)
443 if (dref->path[j] == ':')
445 av_log(c->fc, AV_LOG_DEBUG, "path %s\n", dref->path);
446 } else if (type == 0) { // directory name
448 dref->dir = av_malloc(len+1);
450 return AVERROR(ENOMEM);
451 avio_read(pb, dref->dir, len);
453 for (j = 0; j < len; j++)
454 if (dref->dir[j] == ':')
456 av_log(c->fc, AV_LOG_DEBUG, "dir %s\n", dref->dir);
461 avio_seek(pb, next, SEEK_SET);
466 static int mov_read_hdlr(MOVContext *c, AVIOContext *pb, MOVAtom atom)
470 uint32_t av_unused ctype;
474 if (c->fc->nb_streams < 1) // meta before first trak
477 st = c->fc->streams[c->fc->nb_streams-1];
479 avio_r8(pb); /* version */
480 avio_rb24(pb); /* flags */
483 ctype = avio_rl32(pb);
484 type = avio_rl32(pb); /* component subtype */
486 av_dlog(c->fc, "ctype= %.4s (0x%08x)\n", (char*)&ctype, ctype);
487 av_dlog(c->fc, "stype= %.4s\n", (char*)&type);
489 if (type == MKTAG('v','i','d','e'))
490 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
491 else if (type == MKTAG('s','o','u','n'))
492 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
493 else if (type == MKTAG('m','1','a',' '))
494 st->codec->codec_id = AV_CODEC_ID_MP2;
495 else if ((type == MKTAG('s','u','b','p')) || (type == MKTAG('c','l','c','p')))
496 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
498 avio_rb32(pb); /* component manufacture */
499 avio_rb32(pb); /* component flags */
500 avio_rb32(pb); /* component flags mask */
502 title_size = atom.size - 24;
503 if (title_size > 0) {
504 title_str = av_malloc(title_size + 1); /* Add null terminator */
506 return AVERROR(ENOMEM);
507 avio_read(pb, title_str, title_size);
508 title_str[title_size] = 0;
510 av_dict_set(&st->metadata, "handler_name", title_str +
511 (!c->isom && title_str[0] == title_size - 1), 0);
512 av_freep(&title_str);
518 int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb, MOVAtom atom)
523 if (fc->nb_streams < 1)
525 st = fc->streams[fc->nb_streams-1];
527 avio_rb32(pb); /* version + flags */
528 ff_mp4_read_descr(fc, pb, &tag);
529 if (tag == MP4ESDescrTag) {
530 ff_mp4_parse_es_descr(pb, NULL);
532 avio_rb16(pb); /* ID */
534 ff_mp4_read_descr(fc, pb, &tag);
535 if (tag == MP4DecConfigDescrTag)
536 ff_mp4_read_dec_config_descr(fc, st, pb);
540 static int mov_read_esds(MOVContext *c, AVIOContext *pb, MOVAtom atom)
542 return ff_mov_read_esds(c->fc, pb, atom);
545 static int mov_read_dac3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
548 int ac3info, acmod, lfeon, bsmod;
550 if (c->fc->nb_streams < 1)
552 st = c->fc->streams[c->fc->nb_streams-1];
554 ac3info = avio_rb24(pb);
555 bsmod = (ac3info >> 14) & 0x7;
556 acmod = (ac3info >> 11) & 0x7;
557 lfeon = (ac3info >> 10) & 0x1;
558 st->codec->channels = ((int[]){2,1,2,3,3,4,4,5})[acmod] + lfeon;
559 st->codec->channel_layout = avpriv_ac3_channel_layout_tab[acmod];
561 st->codec->channel_layout |= AV_CH_LOW_FREQUENCY;
562 st->codec->audio_service_type = bsmod;
563 if (st->codec->channels > 1 && bsmod == 0x7)
564 st->codec->audio_service_type = AV_AUDIO_SERVICE_TYPE_KARAOKE;
569 static int mov_read_dec3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
572 int eac3info, acmod, lfeon, bsmod;
574 if (c->fc->nb_streams < 1)
576 st = c->fc->streams[c->fc->nb_streams-1];
578 /* No need to parse fields for additional independent substreams and its
579 * associated dependent substreams since libavcodec's E-AC-3 decoder
580 * does not support them yet. */
581 avio_rb16(pb); /* data_rate and num_ind_sub */
582 eac3info = avio_rb24(pb);
583 bsmod = (eac3info >> 12) & 0x1f;
584 acmod = (eac3info >> 9) & 0x7;
585 lfeon = (eac3info >> 8) & 0x1;
586 st->codec->channel_layout = avpriv_ac3_channel_layout_tab[acmod];
588 st->codec->channel_layout |= AV_CH_LOW_FREQUENCY;
589 st->codec->channels = av_get_channel_layout_nb_channels(st->codec->channel_layout);
590 st->codec->audio_service_type = bsmod;
591 if (st->codec->channels > 1 && bsmod == 0x7)
592 st->codec->audio_service_type = AV_AUDIO_SERVICE_TYPE_KARAOKE;
597 static int mov_read_chan(MOVContext *c, AVIOContext *pb, MOVAtom atom)
601 if (c->fc->nb_streams < 1)
603 st = c->fc->streams[c->fc->nb_streams-1];
608 ff_mov_read_chan(c->fc, st, atom.size - 4);
613 static int mov_read_wfex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
617 if (c->fc->nb_streams < 1)
619 st = c->fc->streams[c->fc->nb_streams-1];
621 ff_get_wav_header(pb, st->codec, atom.size);
626 static int mov_read_pasp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
628 const int num = avio_rb32(pb);
629 const int den = avio_rb32(pb);
632 if (c->fc->nb_streams < 1)
634 st = c->fc->streams[c->fc->nb_streams-1];
636 if ((st->sample_aspect_ratio.den != 1 || st->sample_aspect_ratio.num) && // default
637 (den != st->sample_aspect_ratio.den || num != st->sample_aspect_ratio.num)) {
638 av_log(c->fc, AV_LOG_WARNING,
639 "sample aspect ratio already set to %d:%d, ignoring 'pasp' atom (%d:%d)\n",
640 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
642 } else if (den != 0) {
643 st->sample_aspect_ratio.num = num;
644 st->sample_aspect_ratio.den = den;
649 /* this atom contains actual media data */
650 static int mov_read_mdat(MOVContext *c, AVIOContext *pb, MOVAtom atom)
652 if (atom.size == 0) /* wrong one (MP4) */
655 return 0; /* now go for moov */
658 /* read major brand, minor version and compatible brands and store them as metadata */
659 static int mov_read_ftyp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
663 char minor_ver_str[11]; /* 32 bit integer -> 10 digits + null */
664 char* comp_brands_str;
665 uint8_t type[5] = {0};
667 avio_read(pb, type, 4);
668 if (strcmp(type, "qt "))
670 av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
671 av_dict_set(&c->fc->metadata, "major_brand", type, 0);
672 minor_ver = avio_rb32(pb); /* minor version */
673 snprintf(minor_ver_str, sizeof(minor_ver_str), "%d", minor_ver);
674 av_dict_set(&c->fc->metadata, "minor_version", minor_ver_str, 0);
676 comp_brand_size = atom.size - 8;
677 if (comp_brand_size < 0)
678 return AVERROR_INVALIDDATA;
679 comp_brands_str = av_malloc(comp_brand_size + 1); /* Add null terminator */
680 if (!comp_brands_str)
681 return AVERROR(ENOMEM);
682 avio_read(pb, comp_brands_str, comp_brand_size);
683 comp_brands_str[comp_brand_size] = 0;
684 av_dict_set(&c->fc->metadata, "compatible_brands", comp_brands_str, 0);
685 av_freep(&comp_brands_str);
690 /* this atom should contain all header atoms */
691 static int mov_read_moov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
695 if ((ret = mov_read_default(c, pb, atom)) < 0)
697 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
698 /* so we don't parse the whole file if over a network */
700 return 0; /* now go for mdat */
703 static int mov_read_moof(MOVContext *c, AVIOContext *pb, MOVAtom atom)
705 c->fragment.moof_offset = avio_tell(pb) - 8;
706 av_dlog(c->fc, "moof offset %"PRIx64"\n", c->fragment.moof_offset);
707 return mov_read_default(c, pb, atom);
710 static void mov_metadata_creation_time(AVDictionary **metadata, time_t time)
715 if(time >= 2082844800)
716 time -= 2082844800; /* seconds between 1904-01-01 and Epoch */
719 strftime(buffer, sizeof(buffer), "%Y-%m-%d %H:%M:%S", ptm);
720 av_dict_set(metadata, "creation_time", buffer, 0);
724 static int mov_read_mdhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
727 MOVStreamContext *sc;
729 char language[4] = {0};
731 time_t creation_time;
733 if (c->fc->nb_streams < 1)
735 st = c->fc->streams[c->fc->nb_streams-1];
738 version = avio_r8(pb);
740 av_log_ask_for_sample(c, "unsupported version %d\n", version);
741 return AVERROR_PATCHWELCOME;
743 avio_rb24(pb); /* flags */
745 creation_time = avio_rb64(pb);
748 creation_time = avio_rb32(pb);
749 avio_rb32(pb); /* modification time */
751 mov_metadata_creation_time(&st->metadata, creation_time);
753 sc->time_scale = avio_rb32(pb);
754 st->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
756 lang = avio_rb16(pb); /* language */
757 if (ff_mov_lang_to_iso639(lang, language))
758 av_dict_set(&st->metadata, "language", language, 0);
759 avio_rb16(pb); /* quality */
764 static int mov_read_mvhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
766 time_t creation_time;
767 int version = avio_r8(pb); /* version */
768 avio_rb24(pb); /* flags */
771 creation_time = avio_rb64(pb);
774 creation_time = avio_rb32(pb);
775 avio_rb32(pb); /* modification time */
777 mov_metadata_creation_time(&c->fc->metadata, creation_time);
778 c->time_scale = avio_rb32(pb); /* time scale */
780 av_dlog(c->fc, "time scale = %i\n", c->time_scale);
782 c->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
783 // set the AVCodecContext duration because the duration of individual tracks
785 if (c->time_scale > 0)
786 c->fc->duration = av_rescale(c->duration, AV_TIME_BASE, c->time_scale);
787 avio_rb32(pb); /* preferred scale */
789 avio_rb16(pb); /* preferred volume */
791 avio_skip(pb, 10); /* reserved */
793 avio_skip(pb, 36); /* display matrix */
795 avio_rb32(pb); /* preview time */
796 avio_rb32(pb); /* preview duration */
797 avio_rb32(pb); /* poster time */
798 avio_rb32(pb); /* selection time */
799 avio_rb32(pb); /* selection duration */
800 avio_rb32(pb); /* current time */
801 avio_rb32(pb); /* next track ID */
805 static int mov_read_enda(MOVContext *c, AVIOContext *pb, MOVAtom atom)
810 if (c->fc->nb_streams < 1)
812 st = c->fc->streams[c->fc->nb_streams-1];
814 little_endian = avio_rb16(pb) & 0xFF;
815 av_dlog(c->fc, "enda %d\n", little_endian);
816 if (little_endian == 1) {
817 switch (st->codec->codec_id) {
818 case AV_CODEC_ID_PCM_S24BE:
819 st->codec->codec_id = AV_CODEC_ID_PCM_S24LE;
821 case AV_CODEC_ID_PCM_S32BE:
822 st->codec->codec_id = AV_CODEC_ID_PCM_S32LE;
824 case AV_CODEC_ID_PCM_F32BE:
825 st->codec->codec_id = AV_CODEC_ID_PCM_F32LE;
827 case AV_CODEC_ID_PCM_F64BE:
828 st->codec->codec_id = AV_CODEC_ID_PCM_F64LE;
837 static int mov_read_fiel(MOVContext *c, AVIOContext *pb, MOVAtom atom)
840 unsigned mov_field_order;
841 enum AVFieldOrder decoded_field_order = AV_FIELD_UNKNOWN;
843 if (c->fc->nb_streams < 1) // will happen with jp2 files
845 st = c->fc->streams[c->fc->nb_streams-1];
847 return AVERROR_INVALIDDATA;
848 mov_field_order = avio_rb16(pb);
849 if ((mov_field_order & 0xFF00) == 0x0100)
850 decoded_field_order = AV_FIELD_PROGRESSIVE;
851 else if ((mov_field_order & 0xFF00) == 0x0200) {
852 switch (mov_field_order & 0xFF) {
853 case 0x01: decoded_field_order = AV_FIELD_TT;
855 case 0x06: decoded_field_order = AV_FIELD_BB;
857 case 0x09: decoded_field_order = AV_FIELD_TB;
859 case 0x0E: decoded_field_order = AV_FIELD_BT;
863 if (decoded_field_order == AV_FIELD_UNKNOWN && mov_field_order) {
864 av_log(NULL, AV_LOG_ERROR, "Unknown MOV field order 0x%04x\n", mov_field_order);
866 st->codec->field_order = decoded_field_order;
871 /* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
872 static int mov_read_extradata(MOVContext *c, AVIOContext *pb, MOVAtom atom,
873 enum AVCodecID codec_id)
879 if (c->fc->nb_streams < 1) // will happen with jp2 files
881 st= c->fc->streams[c->fc->nb_streams-1];
883 if (st->codec->codec_id != codec_id)
884 return 0; /* unexpected codec_id - don't mess with extradata */
886 size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
887 if (size > INT_MAX || (uint64_t)atom.size > INT_MAX)
888 return AVERROR_INVALIDDATA;
889 buf= av_realloc(st->codec->extradata, size);
891 return AVERROR(ENOMEM);
892 st->codec->extradata= buf;
893 buf+= st->codec->extradata_size;
894 st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE;
895 AV_WB32( buf , atom.size + 8);
896 AV_WL32( buf + 4, atom.type);
897 avio_read(pb, buf + 8, atom.size);
901 /* wrapper functions for reading ALAC/AVS/MJPEG/MJPEG2000 extradata atoms only for those codecs */
902 static int mov_read_alac(MOVContext *c, AVIOContext *pb, MOVAtom atom)
904 return mov_read_extradata(c, pb, atom, AV_CODEC_ID_ALAC);
907 static int mov_read_avss(MOVContext *c, AVIOContext *pb, MOVAtom atom)
909 return mov_read_extradata(c, pb, atom, AV_CODEC_ID_AVS);
912 static int mov_read_jp2h(MOVContext *c, AVIOContext *pb, MOVAtom atom)
914 return mov_read_extradata(c, pb, atom, AV_CODEC_ID_JPEG2000);
917 static int mov_read_avid(MOVContext *c, AVIOContext *pb, MOVAtom atom)
919 return mov_read_extradata(c, pb, atom, AV_CODEC_ID_AVUI);
922 static int mov_read_svq3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
924 return mov_read_extradata(c, pb, atom, AV_CODEC_ID_SVQ3);
927 static int mov_read_wave(MOVContext *c, AVIOContext *pb, MOVAtom atom)
931 if (c->fc->nb_streams < 1)
933 st = c->fc->streams[c->fc->nb_streams-1];
935 if ((uint64_t)atom.size > (1<<30))
936 return AVERROR_INVALIDDATA;
938 if (st->codec->codec_id == AV_CODEC_ID_QDM2 || st->codec->codec_id == AV_CODEC_ID_QDMC) {
939 // pass all frma atom to codec, needed at least for QDMC and QDM2
940 av_free(st->codec->extradata);
941 st->codec->extradata_size = 0;
942 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
943 if (!st->codec->extradata)
944 return AVERROR(ENOMEM);
945 st->codec->extradata_size = atom.size;
946 avio_read(pb, st->codec->extradata, atom.size);
947 } else if (atom.size > 8) { /* to read frma, esds atoms */
949 if ((ret = mov_read_default(c, pb, atom)) < 0)
952 avio_skip(pb, atom.size);
957 * This function reads atom content and puts data in extradata without tag
958 * nor size unlike mov_read_extradata.
960 static int mov_read_glbl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
964 if (c->fc->nb_streams < 1)
966 st = c->fc->streams[c->fc->nb_streams-1];
968 if ((uint64_t)atom.size > (1<<30))
969 return AVERROR_INVALIDDATA;
971 if (atom.size >= 10) {
972 // Broken files created by legacy versions of libavformat will
973 // wrap a whole fiel atom inside of a glbl atom.
974 unsigned size = avio_rb32(pb);
975 unsigned type = avio_rl32(pb);
976 avio_seek(pb, -8, SEEK_CUR);
977 if (type == MKTAG('f','i','e','l') && size == atom.size)
978 return mov_read_default(c, pb, atom);
980 av_free(st->codec->extradata);
981 st->codec->extradata_size = 0;
982 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
983 if (!st->codec->extradata)
984 return AVERROR(ENOMEM);
985 st->codec->extradata_size = atom.size;
986 avio_read(pb, st->codec->extradata, atom.size);
990 static int mov_read_dvc1(MOVContext *c, AVIOContext *pb, MOVAtom atom)
993 uint8_t profile_level;
995 if (c->fc->nb_streams < 1)
997 st = c->fc->streams[c->fc->nb_streams-1];
999 if (atom.size >= (1<<28) || atom.size < 7)
1000 return AVERROR_INVALIDDATA;
1002 profile_level = avio_r8(pb);
1003 if ((profile_level & 0xf0) != 0xc0)
1006 av_free(st->codec->extradata);
1007 st->codec->extradata_size = 0;
1008 st->codec->extradata = av_mallocz(atom.size - 7 + FF_INPUT_BUFFER_PADDING_SIZE);
1009 if (!st->codec->extradata)
1010 return AVERROR(ENOMEM);
1011 st->codec->extradata_size = atom.size - 7;
1012 avio_seek(pb, 6, SEEK_CUR);
1013 avio_read(pb, st->codec->extradata, st->codec->extradata_size);
1018 * An strf atom is a BITMAPINFOHEADER struct. This struct is 40 bytes itself,
1019 * but can have extradata appended at the end after the 40 bytes belonging
1022 static int mov_read_strf(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1026 if (c->fc->nb_streams < 1)
1028 if (atom.size <= 40)
1030 st = c->fc->streams[c->fc->nb_streams-1];
1032 if ((uint64_t)atom.size > (1<<30))
1033 return AVERROR_INVALIDDATA;
1035 av_free(st->codec->extradata);
1036 st->codec->extradata_size = 0;
1037 st->codec->extradata = av_mallocz(atom.size - 40 + FF_INPUT_BUFFER_PADDING_SIZE);
1038 if (!st->codec->extradata)
1039 return AVERROR(ENOMEM);
1040 st->codec->extradata_size = atom.size - 40;
1042 avio_read(pb, st->codec->extradata, atom.size - 40);
1046 static int mov_read_stco(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1049 MOVStreamContext *sc;
1050 unsigned int i, entries;
1052 if (c->fc->nb_streams < 1)
1054 st = c->fc->streams[c->fc->nb_streams-1];
1057 avio_r8(pb); /* version */
1058 avio_rb24(pb); /* flags */
1060 entries = avio_rb32(pb);
1064 if (entries >= UINT_MAX/sizeof(int64_t))
1065 return AVERROR_INVALIDDATA;
1067 sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
1068 if (!sc->chunk_offsets)
1069 return AVERROR(ENOMEM);
1070 sc->chunk_count = entries;
1072 if (atom.type == MKTAG('s','t','c','o'))
1073 for (i=0; i<entries; i++)
1074 sc->chunk_offsets[i] = avio_rb32(pb);
1075 else if (atom.type == MKTAG('c','o','6','4'))
1076 for (i=0; i<entries; i++)
1077 sc->chunk_offsets[i] = avio_rb64(pb);
1079 return AVERROR_INVALIDDATA;
1085 * Compute codec id for 'lpcm' tag.
1086 * See CoreAudioTypes and AudioStreamBasicDescription at Apple.
1088 enum AVCodecID ff_mov_get_lpcm_codec_id(int bps, int flags)
1090 if (flags & 1) { // floating point
1091 if (flags & 2) { // big endian
1092 if (bps == 32) return AV_CODEC_ID_PCM_F32BE;
1093 else if (bps == 64) return AV_CODEC_ID_PCM_F64BE;
1095 if (bps == 32) return AV_CODEC_ID_PCM_F32LE;
1096 else if (bps == 64) return AV_CODEC_ID_PCM_F64LE;
1102 if (flags & 4) return AV_CODEC_ID_PCM_S8;
1103 else return AV_CODEC_ID_PCM_U8;
1104 else if (bps == 16) return AV_CODEC_ID_PCM_S16BE;
1105 else if (bps == 24) return AV_CODEC_ID_PCM_S24BE;
1106 else if (bps == 32) return AV_CODEC_ID_PCM_S32BE;
1109 if (flags & 4) return AV_CODEC_ID_PCM_S8;
1110 else return AV_CODEC_ID_PCM_U8;
1111 else if (bps == 16) return AV_CODEC_ID_PCM_S16LE;
1112 else if (bps == 24) return AV_CODEC_ID_PCM_S24LE;
1113 else if (bps == 32) return AV_CODEC_ID_PCM_S32LE;
1116 return AV_CODEC_ID_NONE;
1119 int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries)
1122 MOVStreamContext *sc;
1123 int j, pseudo_stream_id;
1125 if (c->fc->nb_streams < 1)
1127 st = c->fc->streams[c->fc->nb_streams-1];
1130 for (pseudo_stream_id=0; pseudo_stream_id<entries; pseudo_stream_id++) {
1131 //Parsing Sample description table
1134 MOVAtom a = { AV_RL32("stsd") };
1135 int64_t start_pos = avio_tell(pb);
1136 int size = avio_rb32(pb); /* size */
1137 uint32_t format = avio_rl32(pb); /* data format */
1140 avio_rb32(pb); /* reserved */
1141 avio_rb16(pb); /* reserved */
1142 dref_id = avio_rb16(pb);
1143 }else if (size <= 0){
1144 av_log(c->fc, AV_LOG_ERROR, "invalid size %d in stsd\n", size);
1148 if (st->codec->codec_tag &&
1149 st->codec->codec_tag != format &&
1150 (c->fc->video_codec_id ? ff_codec_get_id(ff_codec_movvideo_tags, format) != c->fc->video_codec_id
1151 : st->codec->codec_tag != MKTAG('j','p','e','g'))
1153 /* Multiple fourcc, we skip JPEG. This is not correct, we should
1154 * export it as a separate AVStream but this needs a few changes
1155 * in the MOV demuxer, patch welcome. */
1156 av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n");
1157 avio_skip(pb, size - (avio_tell(pb) - start_pos));
1160 /* we cannot demux concatenated h264 streams because of different extradata */
1161 if (st->codec->codec_tag && st->codec->codec_tag == AV_RL32("avc1"))
1162 av_log(c->fc, AV_LOG_WARNING, "Concatenated H.264 might not play corrently.\n");
1163 sc->pseudo_stream_id = st->codec->codec_tag ? -1 : pseudo_stream_id;
1164 sc->dref_id= dref_id;
1166 st->codec->codec_tag = format;
1167 id = ff_codec_get_id(ff_codec_movaudio_tags, format);
1168 if (id<=0 && ((format&0xFFFF) == 'm'+('s'<<8) || (format&0xFFFF) == 'T'+('S'<<8)))
1169 id = ff_codec_get_id(ff_codec_wav_tags, av_bswap32(format)&0xFFFF);
1171 if (st->codec->codec_type != AVMEDIA_TYPE_VIDEO && id > 0) {
1172 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
1173 } else if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO && /* do not overwrite codec type */
1174 format && format != MKTAG('m','p','4','s')) { /* skip old asf mpeg4 tag */
1175 id = ff_codec_get_id(ff_codec_movvideo_tags, format);
1177 id = ff_codec_get_id(ff_codec_bmp_tags, format);
1179 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
1180 else if (st->codec->codec_type == AVMEDIA_TYPE_DATA ||
1181 (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE &&
1182 st->codec->codec_id == AV_CODEC_ID_NONE)){
1183 id = ff_codec_get_id(ff_codec_movsubtitle_tags, format);
1185 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
1189 av_dlog(c->fc, "size=%d 4CC= %c%c%c%c codec_type=%d\n", size,
1190 (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff,
1191 (format >> 24) & 0xff, st->codec->codec_type);
1193 if (st->codec->codec_type==AVMEDIA_TYPE_VIDEO) {
1194 unsigned int color_depth, len;
1195 int color_greyscale;
1198 st->codec->codec_id = id;
1199 avio_rb16(pb); /* version */
1200 avio_rb16(pb); /* revision level */
1201 avio_rb32(pb); /* vendor */
1202 avio_rb32(pb); /* temporal quality */
1203 avio_rb32(pb); /* spatial quality */
1205 st->codec->width = avio_rb16(pb); /* width */
1206 st->codec->height = avio_rb16(pb); /* height */
1208 avio_rb32(pb); /* horiz resolution */
1209 avio_rb32(pb); /* vert resolution */
1210 avio_rb32(pb); /* data size, always 0 */
1211 avio_rb16(pb); /* frames per samples */
1213 len = avio_r8(pb); /* codec name, pascal string */
1216 mov_read_mac_string(c, pb, len, st->codec->codec_name, 32);
1218 avio_skip(pb, 31 - len);
1219 /* codec_tag YV12 triggers an UV swap in rawdec.c */
1220 if (!memcmp(st->codec->codec_name, "Planar Y'CbCr 8-bit 4:2:0", 25))
1221 st->codec->codec_tag=MKTAG('I', '4', '2', '0');
1223 st->codec->bits_per_coded_sample = avio_rb16(pb); /* depth */
1224 color_table_id = avio_rb16(pb); /* colortable id */
1225 av_dlog(c->fc, "depth %d, ctab id %d\n",
1226 st->codec->bits_per_coded_sample, color_table_id);
1227 /* figure out the palette situation */
1228 color_depth = st->codec->bits_per_coded_sample & 0x1F;
1229 color_greyscale = st->codec->bits_per_coded_sample & 0x20;
1231 /* if the depth is 2, 4, or 8 bpp, file is palettized */
1232 if ((color_depth == 2) || (color_depth == 4) ||
1233 (color_depth == 8)) {
1234 /* for palette traversal */
1235 unsigned int color_start, color_count, color_end;
1236 unsigned char a, r, g, b;
1238 if (color_greyscale) {
1239 int color_index, color_dec;
1240 /* compute the greyscale palette */
1241 st->codec->bits_per_coded_sample = color_depth;
1242 color_count = 1 << color_depth;
1244 color_dec = 256 / (color_count - 1);
1245 for (j = 0; j < color_count; j++) {
1246 if (id == AV_CODEC_ID_CINEPAK){
1247 r = g = b = color_count - 1 - color_index;
1249 r = g = b = color_index;
1251 (0xFFU << 24) | (r << 16) | (g << 8) | (b);
1252 color_index -= color_dec;
1253 if (color_index < 0)
1256 } else if (color_table_id) {
1257 const uint8_t *color_table;
1258 /* if flag bit 3 is set, use the default palette */
1259 color_count = 1 << color_depth;
1260 if (color_depth == 2)
1261 color_table = ff_qt_default_palette_4;
1262 else if (color_depth == 4)
1263 color_table = ff_qt_default_palette_16;
1265 color_table = ff_qt_default_palette_256;
1267 for (j = 0; j < color_count; j++) {
1268 r = color_table[j * 3 + 0];
1269 g = color_table[j * 3 + 1];
1270 b = color_table[j * 3 + 2];
1272 (0xFFU << 24) | (r << 16) | (g << 8) | (b);
1275 /* load the palette from the file */
1276 color_start = avio_rb32(pb);
1277 color_count = avio_rb16(pb);
1278 color_end = avio_rb16(pb);
1279 if ((color_start <= 255) &&
1280 (color_end <= 255)) {
1281 for (j = color_start; j <= color_end; j++) {
1282 /* each A, R, G, or B component is 16 bits;
1283 * only use the top 8 bits */
1293 (a << 24 ) | (r << 16) | (g << 8) | (b);
1297 sc->has_palette = 1;
1299 } else if (st->codec->codec_type==AVMEDIA_TYPE_AUDIO) {
1300 int bits_per_sample, flags;
1301 uint16_t version = avio_rb16(pb);
1303 st->codec->codec_id = id;
1304 avio_rb16(pb); /* revision level */
1305 avio_rb32(pb); /* vendor */
1307 st->codec->channels = avio_rb16(pb); /* channel count */
1308 av_dlog(c->fc, "audio channels %d\n", st->codec->channels);
1309 st->codec->bits_per_coded_sample = avio_rb16(pb); /* sample size */
1311 sc->audio_cid = avio_rb16(pb);
1312 avio_rb16(pb); /* packet size = 0 */
1314 st->codec->sample_rate = ((avio_rb32(pb) >> 16));
1316 //Read QT version 1 fields. In version 0 these do not exist.
1317 av_dlog(c->fc, "version =%d, isom =%d\n",version,c->isom);
1320 sc->samples_per_frame = avio_rb32(pb);
1321 avio_rb32(pb); /* bytes per packet */
1322 sc->bytes_per_frame = avio_rb32(pb);
1323 avio_rb32(pb); /* bytes per sample */
1324 } else if (version==2) {
1325 avio_rb32(pb); /* sizeof struct only */
1326 st->codec->sample_rate = av_int2double(avio_rb64(pb)); /* float 64 */
1327 st->codec->channels = avio_rb32(pb);
1328 avio_rb32(pb); /* always 0x7F000000 */
1329 st->codec->bits_per_coded_sample = avio_rb32(pb); /* bits per channel if sound is uncompressed */
1330 flags = avio_rb32(pb); /* lpcm format specific flag */
1331 sc->bytes_per_frame = avio_rb32(pb); /* bytes per audio packet if constant */
1332 sc->samples_per_frame = avio_rb32(pb); /* lpcm frames per audio packet if constant */
1333 if (format == MKTAG('l','p','c','m'))
1334 st->codec->codec_id = ff_mov_get_lpcm_codec_id(st->codec->bits_per_coded_sample, flags);
1338 switch (st->codec->codec_id) {
1339 case AV_CODEC_ID_PCM_S8:
1340 case AV_CODEC_ID_PCM_U8:
1341 if (st->codec->bits_per_coded_sample == 16)
1342 st->codec->codec_id = AV_CODEC_ID_PCM_S16BE;
1344 case AV_CODEC_ID_PCM_S16LE:
1345 case AV_CODEC_ID_PCM_S16BE:
1346 if (st->codec->bits_per_coded_sample == 8)
1347 st->codec->codec_id = AV_CODEC_ID_PCM_S8;
1348 else if (st->codec->bits_per_coded_sample == 24)
1349 st->codec->codec_id =
1350 st->codec->codec_id == AV_CODEC_ID_PCM_S16BE ?
1351 AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE;
1353 /* set values for old format before stsd version 1 appeared */
1354 case AV_CODEC_ID_MACE3:
1355 sc->samples_per_frame = 6;
1356 sc->bytes_per_frame = 2*st->codec->channels;
1358 case AV_CODEC_ID_MACE6:
1359 sc->samples_per_frame = 6;
1360 sc->bytes_per_frame = 1*st->codec->channels;
1362 case AV_CODEC_ID_ADPCM_IMA_QT:
1363 sc->samples_per_frame = 64;
1364 sc->bytes_per_frame = 34*st->codec->channels;
1366 case AV_CODEC_ID_GSM:
1367 sc->samples_per_frame = 160;
1368 sc->bytes_per_frame = 33;
1374 bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
1375 if (bits_per_sample) {
1376 st->codec->bits_per_coded_sample = bits_per_sample;
1377 sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
1379 } else if (st->codec->codec_type==AVMEDIA_TYPE_SUBTITLE){
1380 // ttxt stsd contains display flags, justification, background
1381 // color, fonts, and default styles, so fake an atom to read it
1382 MOVAtom fake_atom = { .size = size - (avio_tell(pb) - start_pos) };
1383 if (format != AV_RL32("mp4s")) // mp4s contains a regular esds atom
1384 mov_read_glbl(c, pb, fake_atom);
1385 st->codec->codec_id= id;
1386 st->codec->width = sc->width;
1387 st->codec->height = sc->height;
1389 if (st->codec->codec_tag == MKTAG('t','m','c','d')) {
1390 MOVStreamContext *tmcd_ctx = st->priv_data;
1392 avio_rb32(pb); /* reserved */
1393 val = avio_rb32(pb); /* flags */
1394 tmcd_ctx->tmcd_flags = val;
1396 st->codec->flags2 |= CODEC_FLAG2_DROP_FRAME_TIMECODE;
1397 avio_rb32(pb); /* time scale */
1398 avio_rb32(pb); /* frame duration */
1399 st->codec->time_base.den = avio_r8(pb); /* number of frame */
1400 st->codec->time_base.num = 1;
1402 /* other codec type, just skip (rtp, mp4s, ...) */
1403 avio_skip(pb, size - (avio_tell(pb) - start_pos));
1405 /* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */
1406 a.size = size - (avio_tell(pb) - start_pos);
1409 if ((ret = mov_read_default(c, pb, a)) < 0)
1411 } else if (a.size > 0)
1412 avio_skip(pb, a.size);
1415 if (st->codec->codec_type==AVMEDIA_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1)
1416 st->codec->sample_rate= sc->time_scale;
1418 /* special codec parameters handling */
1419 switch (st->codec->codec_id) {
1420 #if CONFIG_DV_DEMUXER
1421 case AV_CODEC_ID_DVAUDIO:
1422 c->dv_fctx = avformat_alloc_context();
1423 c->dv_demux = avpriv_dv_init_demux(c->dv_fctx);
1425 av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
1426 return AVERROR(ENOMEM);
1428 sc->dv_audio_container = 1;
1429 st->codec->codec_id = AV_CODEC_ID_PCM_S16LE;
1432 /* no ifdef since parameters are always those */
1433 case AV_CODEC_ID_QCELP:
1434 // force sample rate for qcelp when not stored in mov
1435 if (st->codec->codec_tag != MKTAG('Q','c','l','p'))
1436 st->codec->sample_rate = 8000;
1437 st->codec->channels= 1; /* really needed */
1439 case AV_CODEC_ID_AMR_NB:
1440 st->codec->channels= 1; /* really needed */
1441 /* force sample rate for amr, stsd in 3gp does not store sample rate */
1442 st->codec->sample_rate = 8000;
1444 case AV_CODEC_ID_AMR_WB:
1445 st->codec->channels = 1;
1446 st->codec->sample_rate = 16000;
1448 case AV_CODEC_ID_MP2:
1449 case AV_CODEC_ID_MP3:
1450 st->codec->codec_type = AVMEDIA_TYPE_AUDIO; /* force type after stsd for m1a hdlr */
1451 st->need_parsing = AVSTREAM_PARSE_FULL;
1453 case AV_CODEC_ID_GSM:
1454 case AV_CODEC_ID_ADPCM_MS:
1455 case AV_CODEC_ID_ADPCM_IMA_WAV:
1456 case AV_CODEC_ID_ILBC:
1457 st->codec->block_align = sc->bytes_per_frame;
1459 case AV_CODEC_ID_ALAC:
1460 if (st->codec->extradata_size == 36) {
1461 st->codec->channels = AV_RB8 (st->codec->extradata+21);
1462 st->codec->sample_rate = AV_RB32(st->codec->extradata+32);
1465 case AV_CODEC_ID_AC3:
1466 st->need_parsing = AVSTREAM_PARSE_FULL;
1468 case AV_CODEC_ID_MPEG1VIDEO:
1469 st->need_parsing = AVSTREAM_PARSE_FULL;
1471 case AV_CODEC_ID_VC1:
1472 st->need_parsing = AVSTREAM_PARSE_FULL;
1481 static int mov_read_stsd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1485 avio_r8(pb); /* version */
1486 avio_rb24(pb); /* flags */
1487 entries = avio_rb32(pb);
1489 return ff_mov_read_stsd_entries(c, pb, entries);
1492 static int mov_read_stsc(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1495 MOVStreamContext *sc;
1496 unsigned int i, entries;
1498 if (c->fc->nb_streams < 1)
1500 st = c->fc->streams[c->fc->nb_streams-1];
1503 avio_r8(pb); /* version */
1504 avio_rb24(pb); /* flags */
1506 entries = avio_rb32(pb);
1508 av_dlog(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
1512 if (entries >= UINT_MAX / sizeof(*sc->stsc_data))
1513 return AVERROR_INVALIDDATA;
1514 sc->stsc_data = av_malloc(entries * sizeof(*sc->stsc_data));
1516 return AVERROR(ENOMEM);
1517 sc->stsc_count = entries;
1519 for (i=0; i<entries; i++) {
1520 sc->stsc_data[i].first = avio_rb32(pb);
1521 sc->stsc_data[i].count = avio_rb32(pb);
1522 sc->stsc_data[i].id = avio_rb32(pb);
1527 static int mov_read_stps(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1530 MOVStreamContext *sc;
1531 unsigned i, entries;
1533 if (c->fc->nb_streams < 1)
1535 st = c->fc->streams[c->fc->nb_streams-1];
1538 avio_rb32(pb); // version + flags
1540 entries = avio_rb32(pb);
1541 if (entries >= UINT_MAX / sizeof(*sc->stps_data))
1542 return AVERROR_INVALIDDATA;
1543 sc->stps_data = av_malloc(entries * sizeof(*sc->stps_data));
1545 return AVERROR(ENOMEM);
1546 sc->stps_count = entries;
1548 for (i = 0; i < entries; i++) {
1549 sc->stps_data[i] = avio_rb32(pb);
1550 //av_dlog(c->fc, "stps %d\n", sc->stps_data[i]);
1556 static int mov_read_stss(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1559 MOVStreamContext *sc;
1560 unsigned int i, entries;
1562 if (c->fc->nb_streams < 1)
1564 st = c->fc->streams[c->fc->nb_streams-1];
1567 avio_r8(pb); /* version */
1568 avio_rb24(pb); /* flags */
1570 entries = avio_rb32(pb);
1572 av_dlog(c->fc, "keyframe_count = %d\n", entries);
1576 sc->keyframe_absent = 1;
1579 if (entries >= UINT_MAX / sizeof(int))
1580 return AVERROR_INVALIDDATA;
1581 sc->keyframes = av_malloc(entries * sizeof(int));
1583 return AVERROR(ENOMEM);
1584 sc->keyframe_count = entries;
1586 for (i=0; i<entries; i++) {
1587 sc->keyframes[i] = avio_rb32(pb);
1588 //av_dlog(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
1593 static int mov_read_stsz(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1596 MOVStreamContext *sc;
1597 unsigned int i, entries, sample_size, field_size, num_bytes;
1601 if (c->fc->nb_streams < 1)
1603 st = c->fc->streams[c->fc->nb_streams-1];
1606 avio_r8(pb); /* version */
1607 avio_rb24(pb); /* flags */
1609 if (atom.type == MKTAG('s','t','s','z')) {
1610 sample_size = avio_rb32(pb);
1611 if (!sc->sample_size) /* do not overwrite value computed in stsd */
1612 sc->sample_size = sample_size;
1613 sc->alt_sample_size = sample_size;
1617 avio_rb24(pb); /* reserved */
1618 field_size = avio_r8(pb);
1620 entries = avio_rb32(pb);
1622 av_dlog(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, entries);
1624 sc->sample_count = entries;
1628 if (field_size != 4 && field_size != 8 && field_size != 16 && field_size != 32) {
1629 av_log(c->fc, AV_LOG_ERROR, "Invalid sample field size %d\n", field_size);
1630 return AVERROR_INVALIDDATA;
1635 if (entries >= UINT_MAX / sizeof(int) || entries >= (UINT_MAX - 4) / field_size)
1636 return AVERROR_INVALIDDATA;
1637 sc->sample_sizes = av_malloc(entries * sizeof(int));
1638 if (!sc->sample_sizes)
1639 return AVERROR(ENOMEM);
1641 num_bytes = (entries*field_size+4)>>3;
1643 buf = av_malloc(num_bytes+FF_INPUT_BUFFER_PADDING_SIZE);
1645 av_freep(&sc->sample_sizes);
1646 return AVERROR(ENOMEM);
1649 if (avio_read(pb, buf, num_bytes) < num_bytes) {
1650 av_freep(&sc->sample_sizes);
1652 return AVERROR_INVALIDDATA;
1655 init_get_bits(&gb, buf, 8*num_bytes);
1657 for (i = 0; i < entries; i++) {
1658 sc->sample_sizes[i] = get_bits_long(&gb, field_size);
1659 sc->data_size += sc->sample_sizes[i];
1666 static int mov_read_stts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1669 MOVStreamContext *sc;
1670 unsigned int i, entries;
1672 int64_t total_sample_count=0;
1674 if (c->fc->nb_streams < 1)
1676 st = c->fc->streams[c->fc->nb_streams-1];
1679 avio_r8(pb); /* version */
1680 avio_rb24(pb); /* flags */
1681 entries = avio_rb32(pb);
1683 av_dlog(c->fc, "track[%i].stts.entries = %i\n",
1684 c->fc->nb_streams-1, entries);
1686 if (entries >= UINT_MAX / sizeof(*sc->stts_data))
1689 sc->stts_data = av_malloc(entries * sizeof(*sc->stts_data));
1691 return AVERROR(ENOMEM);
1693 sc->stts_count = entries;
1695 for (i=0; i<entries; i++) {
1696 int sample_duration;
1699 sample_count=avio_rb32(pb);
1700 sample_duration = avio_rb32(pb);
1701 /* sample_duration < 0 is invalid based on the spec */
1702 if (sample_duration < 0) {
1703 av_log(c->fc, AV_LOG_ERROR, "Invalid SampleDelta in STTS %d\n", sample_duration);
1704 sample_duration = 1;
1706 sc->stts_data[i].count= sample_count;
1707 sc->stts_data[i].duration= sample_duration;
1709 av_dlog(c->fc, "sample_count=%d, sample_duration=%d\n",
1710 sample_count, sample_duration);
1712 duration+=(int64_t)sample_duration*sample_count;
1713 total_sample_count+=sample_count;
1716 st->nb_frames= total_sample_count;
1718 st->duration= duration;
1719 sc->track_end = duration;
1723 static int mov_read_ctts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1726 MOVStreamContext *sc;
1727 unsigned int i, entries;
1729 if (c->fc->nb_streams < 1)
1731 st = c->fc->streams[c->fc->nb_streams-1];
1734 avio_r8(pb); /* version */
1735 avio_rb24(pb); /* flags */
1736 entries = avio_rb32(pb);
1738 av_dlog(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
1742 if (entries >= UINT_MAX / sizeof(*sc->ctts_data))
1743 return AVERROR_INVALIDDATA;
1744 sc->ctts_data = av_malloc(entries * sizeof(*sc->ctts_data));
1746 return AVERROR(ENOMEM);
1747 sc->ctts_count = entries;
1749 for (i=0; i<entries; i++) {
1750 int count =avio_rb32(pb);
1751 int duration =avio_rb32(pb);
1753 sc->ctts_data[i].count = count;
1754 sc->ctts_data[i].duration= duration;
1756 if (FFABS(duration) > (1<<28) && i+2<entries) {
1757 av_log(c->fc, AV_LOG_WARNING, "CTTS invalid\n");
1758 av_freep(&sc->ctts_data);
1763 if (duration < 0 && i+2<entries)
1764 sc->dts_shift = FFMAX(sc->dts_shift, -duration);
1767 av_dlog(c->fc, "dts shift %d\n", sc->dts_shift);
1772 static void mov_build_index(MOVContext *mov, AVStream *st)
1774 MOVStreamContext *sc = st->priv_data;
1775 int64_t current_offset;
1776 int64_t current_dts = 0;
1777 unsigned int stts_index = 0;
1778 unsigned int stsc_index = 0;
1779 unsigned int stss_index = 0;
1780 unsigned int stps_index = 0;
1782 uint64_t stream_size = 0;
1785 /* adjust first dts according to edit list */
1786 if ((sc->empty_duration || sc->start_time) && mov->time_scale > 0) {
1787 if (sc->empty_duration)
1788 sc->empty_duration = av_rescale(sc->empty_duration, sc->time_scale, mov->time_scale);
1789 sc->time_offset = sc->start_time - sc->empty_duration;
1790 current_dts = -sc->time_offset;
1791 if (sc->ctts_count>0 && sc->stts_count>0 &&
1792 sc->ctts_data[0].duration / FFMAX(sc->stts_data[0].duration, 1) > 16) {
1793 /* more than 16 frames delay, dts are likely wrong
1794 this happens with files created by iMovie */
1796 st->codec->has_b_frames = 1;
1800 /* only use old uncompressed audio chunk demuxing when stts specifies it */
1801 if (!(st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
1802 sc->stts_count == 1 && sc->stts_data[0].duration == 1)) {
1803 unsigned int current_sample = 0;
1804 unsigned int stts_sample = 0;
1805 unsigned int sample_size;
1806 unsigned int distance = 0;
1807 int key_off = (sc->keyframe_count && sc->keyframes[0] > 0) || (sc->stps_data && sc->stps_data[0] > 0);
1809 current_dts -= sc->dts_shift;
1811 if (!sc->sample_count || st->nb_index_entries)
1813 if (sc->sample_count >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries)
1815 mem = av_realloc(st->index_entries, (st->nb_index_entries + sc->sample_count) * sizeof(*st->index_entries));
1818 st->index_entries = mem;
1819 st->index_entries_allocated_size = (st->nb_index_entries + sc->sample_count) * sizeof(*st->index_entries);
1821 for (i = 0; i < sc->chunk_count; i++) {
1822 current_offset = sc->chunk_offsets[i];
1823 while (stsc_index + 1 < sc->stsc_count &&
1824 i + 1 == sc->stsc_data[stsc_index + 1].first)
1826 for (j = 0; j < sc->stsc_data[stsc_index].count; j++) {
1828 if (current_sample >= sc->sample_count) {
1829 av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
1833 if (!sc->keyframe_absent && (!sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index])) {
1835 if (stss_index + 1 < sc->keyframe_count)
1837 } else if (sc->stps_count && current_sample+key_off == sc->stps_data[stps_index]) {
1839 if (stps_index + 1 < sc->stps_count)
1844 sample_size = sc->alt_sample_size > 0 ? sc->alt_sample_size : sc->sample_sizes[current_sample];
1845 if (sc->pseudo_stream_id == -1 ||
1846 sc->stsc_data[stsc_index].id - 1 == sc->pseudo_stream_id) {
1847 AVIndexEntry *e = &st->index_entries[st->nb_index_entries++];
1848 e->pos = current_offset;
1849 e->timestamp = current_dts;
1850 e->size = sample_size;
1851 e->min_distance = distance;
1852 e->flags = keyframe ? AVINDEX_KEYFRAME : 0;
1853 av_dlog(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
1854 "size %d, distance %d, keyframe %d\n", st->index, current_sample,
1855 current_offset, current_dts, sample_size, distance, keyframe);
1858 current_offset += sample_size;
1859 stream_size += sample_size;
1860 current_dts += sc->stts_data[stts_index].duration;
1864 if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
1870 if (st->duration > 0)
1871 st->codec->bit_rate = stream_size*8*sc->time_scale/st->duration;
1873 unsigned chunk_samples, total = 0;
1875 // compute total chunk count
1876 for (i = 0; i < sc->stsc_count; i++) {
1877 unsigned count, chunk_count;
1879 chunk_samples = sc->stsc_data[i].count;
1880 if (i != sc->stsc_count - 1 &&
1881 sc->samples_per_frame && chunk_samples % sc->samples_per_frame) {
1882 av_log(mov->fc, AV_LOG_ERROR, "error unaligned chunk\n");
1886 if (sc->samples_per_frame >= 160) { // gsm
1887 count = chunk_samples / sc->samples_per_frame;
1888 } else if (sc->samples_per_frame > 1) {
1889 unsigned samples = (1024/sc->samples_per_frame)*sc->samples_per_frame;
1890 count = (chunk_samples+samples-1) / samples;
1892 count = (chunk_samples+1023) / 1024;
1895 if (i < sc->stsc_count - 1)
1896 chunk_count = sc->stsc_data[i+1].first - sc->stsc_data[i].first;
1898 chunk_count = sc->chunk_count - (sc->stsc_data[i].first - 1);
1899 total += chunk_count * count;
1902 av_dlog(mov->fc, "chunk count %d\n", total);
1903 if (total >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries)
1905 mem = av_realloc(st->index_entries, (st->nb_index_entries + total) * sizeof(*st->index_entries));
1908 st->index_entries = mem;
1909 st->index_entries_allocated_size = (st->nb_index_entries + total) * sizeof(*st->index_entries);
1912 for (i = 0; i < sc->chunk_count; i++) {
1913 current_offset = sc->chunk_offsets[i];
1914 if (stsc_index + 1 < sc->stsc_count &&
1915 i + 1 == sc->stsc_data[stsc_index + 1].first)
1917 chunk_samples = sc->stsc_data[stsc_index].count;
1919 while (chunk_samples > 0) {
1921 unsigned size, samples;
1923 if (sc->samples_per_frame >= 160) { // gsm
1924 samples = sc->samples_per_frame;
1925 size = sc->bytes_per_frame;
1927 if (sc->samples_per_frame > 1) {
1928 samples = FFMIN((1024 / sc->samples_per_frame)*
1929 sc->samples_per_frame, chunk_samples);
1930 size = (samples / sc->samples_per_frame) * sc->bytes_per_frame;
1932 samples = FFMIN(1024, chunk_samples);
1933 size = samples * sc->sample_size;
1937 if (st->nb_index_entries >= total) {
1938 av_log(mov->fc, AV_LOG_ERROR, "wrong chunk count %d\n", total);
1941 e = &st->index_entries[st->nb_index_entries++];
1942 e->pos = current_offset;
1943 e->timestamp = current_dts;
1945 e->min_distance = 0;
1946 e->flags = AVINDEX_KEYFRAME;
1947 av_dlog(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", "
1948 "size %d, duration %d\n", st->index, i, current_offset, current_dts,
1951 current_offset += size;
1952 current_dts += samples;
1953 chunk_samples -= samples;
1959 static int mov_open_dref(AVIOContext **pb, const char *src, MOVDref *ref,
1960 AVIOInterruptCB *int_cb, int use_absolute_path, AVFormatContext *fc)
1962 /* try relative path, we do not try the absolute because it can leak information about our
1963 system to an attacker */
1964 if (ref->nlvl_to > 0 && ref->nlvl_from > 0) {
1965 char filename[1024];
1966 const char *src_path;
1969 /* find a source dir */
1970 src_path = strrchr(src, '/');
1976 /* find a next level down to target */
1977 for (i = 0, l = strlen(ref->path) - 1; l >= 0; l--)
1978 if (ref->path[l] == '/') {
1979 if (i == ref->nlvl_to - 1)
1985 /* compose filename if next level down to target was found */
1986 if (i == ref->nlvl_to - 1 && src_path - src < sizeof(filename)) {
1987 memcpy(filename, src, src_path - src);
1988 filename[src_path - src] = 0;
1990 for (i = 1; i < ref->nlvl_from; i++)
1991 av_strlcat(filename, "../", 1024);
1993 av_strlcat(filename, ref->path + l + 1, 1024);
1995 if (!avio_open2(pb, filename, AVIO_FLAG_READ, int_cb, NULL))
1998 } else if (use_absolute_path) {
1999 av_log(fc, AV_LOG_WARNING, "Using absolute path on user request, "
2000 "this is a possible security issue\n");
2001 if (!avio_open2(pb, ref->path, AVIO_FLAG_READ, int_cb, NULL))
2005 return AVERROR(ENOENT);
2008 static int mov_read_trak(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2011 MOVStreamContext *sc;
2014 st = avformat_new_stream(c->fc, NULL);
2015 if (!st) return AVERROR(ENOMEM);
2016 st->id = c->fc->nb_streams;
2017 sc = av_mallocz(sizeof(MOVStreamContext));
2018 if (!sc) return AVERROR(ENOMEM);
2021 st->codec->codec_type = AVMEDIA_TYPE_DATA;
2022 sc->ffindex = st->index;
2024 if ((ret = mov_read_default(c, pb, atom)) < 0)
2028 if (sc->chunk_count && (!sc->stts_count || !sc->stsc_count ||
2029 (!sc->sample_size && !sc->sample_count))) {
2030 av_log(c->fc, AV_LOG_ERROR, "stream %d, missing mandatory atoms, broken header\n",
2035 if (sc->time_scale <= 0) {
2036 av_log(c->fc, AV_LOG_WARNING, "stream %d, timescale not set\n", st->index);
2037 sc->time_scale = c->time_scale;
2038 if (sc->time_scale <= 0)
2042 avpriv_set_pts_info(st, 64, 1, sc->time_scale);
2044 mov_build_index(c, st);
2046 if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) {
2047 MOVDref *dref = &sc->drefs[sc->dref_id - 1];
2048 if (mov_open_dref(&sc->pb, c->fc->filename, dref, &c->fc->interrupt_callback,
2049 c->use_absolute_path, c->fc) < 0)
2050 av_log(c->fc, AV_LOG_ERROR,
2051 "stream %d, error opening alias: path='%s', dir='%s', "
2052 "filename='%s', volume='%s', nlvl_from=%d, nlvl_to=%d\n",
2053 st->index, dref->path, dref->dir, dref->filename,
2054 dref->volume, dref->nlvl_from, dref->nlvl_to);
2058 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2059 if (!st->sample_aspect_ratio.num &&
2060 (st->codec->width != sc->width || st->codec->height != sc->height)) {
2061 st->sample_aspect_ratio = av_d2q(((double)st->codec->height * sc->width) /
2062 ((double)st->codec->width * sc->height), INT_MAX);
2065 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
2066 sc->time_scale*st->nb_frames, st->duration, INT_MAX);
2068 #if FF_API_R_FRAME_RATE
2069 if (sc->stts_count == 1 || (sc->stts_count == 2 && sc->stts_data[1].count == 1))
2070 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den,
2071 sc->time_scale, sc->stts_data[0].duration, INT_MAX);
2075 switch (st->codec->codec_id) {
2076 #if CONFIG_H261_DECODER
2077 case AV_CODEC_ID_H261:
2079 #if CONFIG_H263_DECODER
2080 case AV_CODEC_ID_H263:
2082 #if CONFIG_MPEG4_DECODER
2083 case AV_CODEC_ID_MPEG4:
2085 st->codec->width = 0; /* let decoder init width/height */
2086 st->codec->height= 0;
2090 /* Do not need those anymore. */
2091 av_freep(&sc->chunk_offsets);
2092 av_freep(&sc->stsc_data);
2093 av_freep(&sc->sample_sizes);
2094 av_freep(&sc->keyframes);
2095 av_freep(&sc->stts_data);
2096 av_freep(&sc->stps_data);
2101 static int mov_read_ilst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2104 c->itunes_metadata = 1;
2105 ret = mov_read_default(c, pb, atom);
2106 c->itunes_metadata = 0;
2110 static int mov_read_meta(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2112 while (atom.size > 8) {
2113 uint32_t tag = avio_rl32(pb);
2115 if (tag == MKTAG('h','d','l','r')) {
2116 avio_seek(pb, -8, SEEK_CUR);
2118 return mov_read_default(c, pb, atom);
2124 static int mov_read_tkhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2129 int64_t disp_transform[2];
2130 int display_matrix[3][2];
2132 MOVStreamContext *sc;
2135 if (c->fc->nb_streams < 1)
2137 st = c->fc->streams[c->fc->nb_streams-1];
2140 version = avio_r8(pb);
2141 avio_rb24(pb); /* flags */
2143 MOV_TRACK_ENABLED 0x0001
2144 MOV_TRACK_IN_MOVIE 0x0002
2145 MOV_TRACK_IN_PREVIEW 0x0004
2146 MOV_TRACK_IN_POSTER 0x0008
2153 avio_rb32(pb); /* creation time */
2154 avio_rb32(pb); /* modification time */
2156 st->id = (int)avio_rb32(pb); /* track id (NOT 0 !)*/
2157 avio_rb32(pb); /* reserved */
2159 /* highlevel (considering edits) duration in movie timebase */
2160 (version == 1) ? avio_rb64(pb) : avio_rb32(pb);
2161 avio_rb32(pb); /* reserved */
2162 avio_rb32(pb); /* reserved */
2164 avio_rb16(pb); /* layer */
2165 avio_rb16(pb); /* alternate group */
2166 avio_rb16(pb); /* volume */
2167 avio_rb16(pb); /* reserved */
2169 //read in the display matrix (outlined in ISO 14496-12, Section 6.2.2)
2170 // they're kept in fixed point format through all calculations
2171 // ignore u,v,z b/c we don't need the scale factor to calc aspect ratio
2172 for (i = 0; i < 3; i++) {
2173 display_matrix[i][0] = avio_rb32(pb); // 16.16 fixed point
2174 display_matrix[i][1] = avio_rb32(pb); // 16.16 fixed point
2175 avio_rb32(pb); // 2.30 fixed point (not used)
2178 width = avio_rb32(pb); // 16.16 fixed point track width
2179 height = avio_rb32(pb); // 16.16 fixed point track height
2180 sc->width = width >> 16;
2181 sc->height = height >> 16;
2183 //Assign clockwise rotate values based on transform matrix so that
2184 //we can compensate for iPhone orientation during capture.
2186 if (display_matrix[1][0] == -65536 && display_matrix[0][1] == 65536) {
2187 av_dict_set(&st->metadata, "rotate", "90", 0);
2190 if (display_matrix[0][0] == -65536 && display_matrix[1][1] == -65536) {
2191 av_dict_set(&st->metadata, "rotate", "180", 0);
2194 if (display_matrix[1][0] == 65536 && display_matrix[0][1] == -65536) {
2195 av_dict_set(&st->metadata, "rotate", "270", 0);
2198 // transform the display width/height according to the matrix
2199 // skip this if the display matrix is the default identity matrix
2200 // or if it is rotating the picture, ex iPhone 3GS
2201 // to keep the same scale, use [width height 1<<16]
2202 if (width && height &&
2203 ((display_matrix[0][0] != 65536 ||
2204 display_matrix[1][1] != 65536) &&
2205 !display_matrix[0][1] &&
2206 !display_matrix[1][0] &&
2207 !display_matrix[2][0] && !display_matrix[2][1])) {
2208 for (i = 0; i < 2; i++)
2210 (int64_t) width * display_matrix[0][i] +
2211 (int64_t) height * display_matrix[1][i] +
2212 ((int64_t) display_matrix[2][i] << 16);
2214 //sample aspect ratio is new width/height divided by old width/height
2215 st->sample_aspect_ratio = av_d2q(
2216 ((double) disp_transform[0] * height) /
2217 ((double) disp_transform[1] * width), INT_MAX);
2222 static int mov_read_tfhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2224 MOVFragment *frag = &c->fragment;
2225 MOVTrackExt *trex = NULL;
2226 int flags, track_id, i;
2228 avio_r8(pb); /* version */
2229 flags = avio_rb24(pb);
2231 track_id = avio_rb32(pb);
2233 return AVERROR_INVALIDDATA;
2234 frag->track_id = track_id;
2235 for (i = 0; i < c->trex_count; i++)
2236 if (c->trex_data[i].track_id == frag->track_id) {
2237 trex = &c->trex_data[i];
2241 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding trex\n");
2242 return AVERROR_INVALIDDATA;
2245 frag->base_data_offset = flags & MOV_TFHD_BASE_DATA_OFFSET ?
2246 avio_rb64(pb) : frag->moof_offset;
2247 frag->stsd_id = flags & MOV_TFHD_STSD_ID ? avio_rb32(pb) : trex->stsd_id;
2249 frag->duration = flags & MOV_TFHD_DEFAULT_DURATION ?
2250 avio_rb32(pb) : trex->duration;
2251 frag->size = flags & MOV_TFHD_DEFAULT_SIZE ?
2252 avio_rb32(pb) : trex->size;
2253 frag->flags = flags & MOV_TFHD_DEFAULT_FLAGS ?
2254 avio_rb32(pb) : trex->flags;
2255 av_dlog(c->fc, "frag flags 0x%x\n", frag->flags);
2259 static int mov_read_chap(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2261 c->chapter_track = avio_rb32(pb);
2265 static int mov_read_trex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2269 if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data))
2270 return AVERROR_INVALIDDATA;
2271 trex = av_realloc(c->trex_data, (c->trex_count+1)*sizeof(*c->trex_data));
2273 return AVERROR(ENOMEM);
2275 c->fc->duration = AV_NOPTS_VALUE; // the duration from mvhd is not representing the whole file when fragments are used.
2277 c->trex_data = trex;
2278 trex = &c->trex_data[c->trex_count++];
2279 avio_r8(pb); /* version */
2280 avio_rb24(pb); /* flags */
2281 trex->track_id = avio_rb32(pb);
2282 trex->stsd_id = avio_rb32(pb);
2283 trex->duration = avio_rb32(pb);
2284 trex->size = avio_rb32(pb);
2285 trex->flags = avio_rb32(pb);
2289 static int mov_read_trun(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2291 MOVFragment *frag = &c->fragment;
2292 AVStream *st = NULL;
2293 MOVStreamContext *sc;
2297 int data_offset = 0;
2298 unsigned entries, first_sample_flags = frag->flags;
2299 int flags, distance, i, found_keyframe = 0;
2301 for (i = 0; i < c->fc->nb_streams; i++) {
2302 if (c->fc->streams[i]->id == frag->track_id) {
2303 st = c->fc->streams[i];
2308 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id);
2309 return AVERROR_INVALIDDATA;
2312 if (sc->pseudo_stream_id+1 != frag->stsd_id)
2314 avio_r8(pb); /* version */
2315 flags = avio_rb24(pb);
2316 entries = avio_rb32(pb);
2317 av_dlog(c->fc, "flags 0x%x entries %d\n", flags, entries);
2319 /* Always assume the presence of composition time offsets.
2320 * Without this assumption, for instance, we cannot deal with a track in fragmented movies that meet the following.
2321 * 1) in the initial movie, there are no samples.
2322 * 2) in the first movie fragment, there is only one sample without composition time offset.
2323 * 3) in the subsequent movie fragments, there are samples with composition time offset. */
2324 if (!sc->ctts_count && sc->sample_count)
2326 /* Complement ctts table if moov atom doesn't have ctts atom. */
2327 ctts_data = av_malloc(sizeof(*sc->ctts_data));
2329 return AVERROR(ENOMEM);
2330 sc->ctts_data = ctts_data;
2331 sc->ctts_data[sc->ctts_count].count = sc->sample_count;
2332 sc->ctts_data[sc->ctts_count].duration = 0;
2335 if ((uint64_t)entries+sc->ctts_count >= UINT_MAX/sizeof(*sc->ctts_data))
2336 return AVERROR_INVALIDDATA;
2337 ctts_data = av_realloc(sc->ctts_data,
2338 (entries+sc->ctts_count)*sizeof(*sc->ctts_data));
2340 return AVERROR(ENOMEM);
2341 sc->ctts_data = ctts_data;
2343 if (flags & MOV_TRUN_DATA_OFFSET) data_offset = avio_rb32(pb);
2344 if (flags & MOV_TRUN_FIRST_SAMPLE_FLAGS) first_sample_flags = avio_rb32(pb);
2345 dts = sc->track_end - sc->time_offset;
2346 offset = frag->base_data_offset + data_offset;
2348 av_dlog(c->fc, "first sample flags 0x%x\n", first_sample_flags);
2349 for (i = 0; i < entries; i++) {
2350 unsigned sample_size = frag->size;
2351 int sample_flags = i ? frag->flags : first_sample_flags;
2352 unsigned sample_duration = frag->duration;
2355 if (flags & MOV_TRUN_SAMPLE_DURATION) sample_duration = avio_rb32(pb);
2356 if (flags & MOV_TRUN_SAMPLE_SIZE) sample_size = avio_rb32(pb);
2357 if (flags & MOV_TRUN_SAMPLE_FLAGS) sample_flags = avio_rb32(pb);
2358 sc->ctts_data[sc->ctts_count].count = 1;
2359 sc->ctts_data[sc->ctts_count].duration = (flags & MOV_TRUN_SAMPLE_CTS) ?
2362 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
2364 else if (!found_keyframe)
2365 keyframe = found_keyframe =
2366 !(sample_flags & (MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC |
2367 MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES));
2370 av_add_index_entry(st, offset, dts, sample_size, distance,
2371 keyframe ? AVINDEX_KEYFRAME : 0);
2372 av_dlog(c->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
2373 "size %d, distance %d, keyframe %d\n", st->index, sc->sample_count+i,
2374 offset, dts, sample_size, distance, keyframe);
2376 dts += sample_duration;
2377 offset += sample_size;
2378 sc->data_size += sample_size;
2380 frag->moof_offset = offset;
2381 st->duration = sc->track_end = dts + sc->time_offset;
2385 /* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
2386 /* like the files created with Adobe Premiere 5.0, for samples see */
2387 /* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
2388 static int mov_read_wide(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2393 return 0; /* continue */
2394 if (avio_rb32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
2395 avio_skip(pb, atom.size - 4);
2398 atom.type = avio_rl32(pb);
2400 if (atom.type != MKTAG('m','d','a','t')) {
2401 avio_skip(pb, atom.size);
2404 err = mov_read_mdat(c, pb, atom);
2408 static int mov_read_cmov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2413 uint8_t *moov_data; /* uncompressed data */
2414 long cmov_len, moov_len;
2417 avio_rb32(pb); /* dcom atom */
2418 if (avio_rl32(pb) != MKTAG('d','c','o','m'))
2419 return AVERROR_INVALIDDATA;
2420 if (avio_rl32(pb) != MKTAG('z','l','i','b')) {
2421 av_log(c->fc, AV_LOG_ERROR, "unknown compression for cmov atom !");
2422 return AVERROR_INVALIDDATA;
2424 avio_rb32(pb); /* cmvd atom */
2425 if (avio_rl32(pb) != MKTAG('c','m','v','d'))
2426 return AVERROR_INVALIDDATA;
2427 moov_len = avio_rb32(pb); /* uncompressed size */
2428 cmov_len = atom.size - 6 * 4;
2430 cmov_data = av_malloc(cmov_len);
2432 return AVERROR(ENOMEM);
2433 moov_data = av_malloc(moov_len);
2436 return AVERROR(ENOMEM);
2438 avio_read(pb, cmov_data, cmov_len);
2439 if (uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
2440 goto free_and_return;
2441 if (ffio_init_context(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
2442 goto free_and_return;
2443 atom.type = MKTAG('m','o','o','v');
2444 atom.size = moov_len;
2445 ret = mov_read_default(c, &ctx, atom);
2451 av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
2452 return AVERROR(ENOSYS);
2456 /* edit list atom */
2457 static int mov_read_elst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2459 MOVStreamContext *sc;
2460 int i, edit_count, version, edit_start_index = 0;
2462 if (c->fc->nb_streams < 1)
2464 sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
2466 version = avio_r8(pb); /* version */
2467 avio_rb24(pb); /* flags */
2468 edit_count = avio_rb32(pb); /* entries */
2470 if ((uint64_t)edit_count*12+8 > atom.size)
2471 return AVERROR_INVALIDDATA;
2473 for (i=0; i<edit_count; i++){
2477 duration = avio_rb64(pb);
2478 time = avio_rb64(pb);
2480 duration = avio_rb32(pb); /* segment duration */
2481 time = (int32_t)avio_rb32(pb); /* media time */
2483 avio_rb32(pb); /* Media rate */
2484 if (i == 0 && time == -1) {
2485 sc->empty_duration = duration;
2486 edit_start_index = 1;
2487 } else if (i == edit_start_index && time >= 0)
2488 sc->start_time = time;
2492 av_log(c->fc, AV_LOG_WARNING, "multiple edit list entries, "
2493 "a/v desync might occur, patch welcome\n");
2495 av_dlog(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, edit_count);
2499 static int mov_read_chan2(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2504 ff_mov_read_chan(c->fc,c->fc->streams[0], atom.size - 4);
2508 static int mov_read_tref(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2511 MOVStreamContext *sc;
2513 if (c->fc->nb_streams < 1)
2514 return AVERROR_INVALIDDATA;
2515 sc = c->fc->streams[c->fc->nb_streams - 1]->priv_data;
2517 size = avio_rb32(pb);
2521 sc->trefs_count = (size - 4) / 8;
2522 sc->trefs = av_malloc(sc->trefs_count * sizeof(*sc->trefs));
2524 return AVERROR(ENOMEM);
2526 sc->tref_type = avio_rl32(pb);
2527 for (i = 0; i < sc->trefs_count; i++)
2528 sc->trefs[i] = avio_rb32(pb);
2532 static const MOVParseTableEntry mov_default_parse_table[] = {
2533 { MKTAG('A','C','L','R'), mov_read_avid },
2534 { MKTAG('A','P','R','G'), mov_read_avid },
2535 { MKTAG('A','R','E','S'), mov_read_avid },
2536 { MKTAG('a','v','s','s'), mov_read_avss },
2537 { MKTAG('c','h','p','l'), mov_read_chpl },
2538 { MKTAG('c','o','6','4'), mov_read_stco },
2539 { MKTAG('c','t','t','s'), mov_read_ctts }, /* composition time to sample */
2540 { MKTAG('d','i','n','f'), mov_read_default },
2541 { MKTAG('d','r','e','f'), mov_read_dref },
2542 { MKTAG('e','d','t','s'), mov_read_default },
2543 { MKTAG('e','l','s','t'), mov_read_elst },
2544 { MKTAG('e','n','d','a'), mov_read_enda },
2545 { MKTAG('f','i','e','l'), mov_read_fiel },
2546 { MKTAG('f','t','y','p'), mov_read_ftyp },
2547 { MKTAG('g','l','b','l'), mov_read_glbl },
2548 { MKTAG('h','d','l','r'), mov_read_hdlr },
2549 { MKTAG('i','l','s','t'), mov_read_ilst },
2550 { MKTAG('j','p','2','h'), mov_read_jp2h },
2551 { MKTAG('m','d','a','t'), mov_read_mdat },
2552 { MKTAG('m','d','h','d'), mov_read_mdhd },
2553 { MKTAG('m','d','i','a'), mov_read_default },
2554 { MKTAG('m','e','t','a'), mov_read_meta },
2555 { MKTAG('m','i','n','f'), mov_read_default },
2556 { MKTAG('m','o','o','f'), mov_read_moof },
2557 { MKTAG('m','o','o','v'), mov_read_moov },
2558 { MKTAG('m','v','e','x'), mov_read_default },
2559 { MKTAG('m','v','h','d'), mov_read_mvhd },
2560 { MKTAG('S','M','I',' '), mov_read_svq3 },
2561 { MKTAG('a','l','a','c'), mov_read_alac }, /* alac specific atom */
2562 { MKTAG('a','v','c','C'), mov_read_glbl },
2563 { MKTAG('p','a','s','p'), mov_read_pasp },
2564 { MKTAG('s','t','b','l'), mov_read_default },
2565 { MKTAG('s','t','c','o'), mov_read_stco },
2566 { MKTAG('s','t','p','s'), mov_read_stps },
2567 { MKTAG('s','t','r','f'), mov_read_strf },
2568 { MKTAG('s','t','s','c'), mov_read_stsc },
2569 { MKTAG('s','t','s','d'), mov_read_stsd }, /* sample description */
2570 { MKTAG('s','t','s','s'), mov_read_stss }, /* sync sample */
2571 { MKTAG('s','t','s','z'), mov_read_stsz }, /* sample size */
2572 { MKTAG('s','t','t','s'), mov_read_stts },
2573 { MKTAG('s','t','z','2'), mov_read_stsz }, /* compact sample size */
2574 { MKTAG('t','k','h','d'), mov_read_tkhd }, /* track header */
2575 { MKTAG('t','f','h','d'), mov_read_tfhd }, /* track fragment header */
2576 { MKTAG('t','r','a','k'), mov_read_trak },
2577 { MKTAG('t','r','a','f'), mov_read_default },
2578 { MKTAG('t','r','e','f'), mov_read_tref },
2579 { MKTAG('c','h','a','p'), mov_read_chap },
2580 { MKTAG('t','r','e','x'), mov_read_trex },
2581 { MKTAG('t','r','u','n'), mov_read_trun },
2582 { MKTAG('u','d','t','a'), mov_read_default },
2583 { MKTAG('w','a','v','e'), mov_read_wave },
2584 { MKTAG('e','s','d','s'), mov_read_esds },
2585 { MKTAG('d','a','c','3'), mov_read_dac3 }, /* AC-3 info */
2586 { MKTAG('d','e','c','3'), mov_read_dec3 }, /* EAC-3 info */
2587 { MKTAG('w','i','d','e'), mov_read_wide }, /* place holder */
2588 { MKTAG('w','f','e','x'), mov_read_wfex },
2589 { MKTAG('c','m','o','v'), mov_read_cmov },
2590 { MKTAG('c','h','a','n'), mov_read_chan }, /* channel layout */
2591 { MKTAG('d','v','c','1'), mov_read_dvc1 },
2595 static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2597 int64_t total_size = 0;
2602 atom.size = INT64_MAX;
2603 while (total_size + 8 <= atom.size && !url_feof(pb)) {
2604 int (*parse)(MOVContext*, AVIOContext*, MOVAtom) = NULL;
2607 if (atom.size >= 8) {
2608 a.size = avio_rb32(pb);
2609 a.type = avio_rl32(pb);
2610 if (atom.type != MKTAG('r','o','o','t') &&
2611 atom.type != MKTAG('m','o','o','v'))
2613 if (a.type == MKTAG('t','r','a','k') || a.type == MKTAG('m','d','a','t'))
2615 av_log(c->fc, AV_LOG_ERROR, "Broken file, trak/mdat not at top-level\n");
2621 if (a.size == 1) { /* 64 bit extended size */
2622 a.size = avio_rb64(pb) - 8;
2626 av_dlog(c->fc, "type: %08x '%.4s' parent:'%.4s' sz: %"PRId64" %"PRId64" %"PRId64"\n",
2627 a.type, (char*)&a.type, (char*)&atom.type, a.size, total_size, atom.size);
2629 a.size = atom.size - total_size + 8;
2634 a.size = FFMIN(a.size, atom.size - total_size);
2636 for (i = 0; mov_default_parse_table[i].type; i++)
2637 if (mov_default_parse_table[i].type == a.type) {
2638 parse = mov_default_parse_table[i].parse;
2642 // container is user data
2643 if (!parse && (atom.type == MKTAG('u','d','t','a') ||
2644 atom.type == MKTAG('i','l','s','t')))
2645 parse = mov_read_udta_string;
2647 if (!parse) { /* skip leaf atoms data */
2648 avio_skip(pb, a.size);
2650 int64_t start_pos = avio_tell(pb);
2652 int err = parse(c, pb, a);
2655 if (c->found_moov && c->found_mdat &&
2656 ((!pb->seekable || c->fc->flags & AVFMT_FLAG_IGNIDX) ||
2657 start_pos + a.size == avio_size(pb))) {
2658 if (!pb->seekable || c->fc->flags & AVFMT_FLAG_IGNIDX)
2659 c->next_root_atom = start_pos + a.size;
2662 left = a.size - avio_tell(pb) + start_pos;
2663 if (left > 0) /* skip garbage at atom end */
2664 avio_skip(pb, left);
2667 total_size += a.size;
2670 if (total_size < atom.size && atom.size < 0x7ffff)
2671 avio_skip(pb, atom.size - total_size);
2676 static int mov_probe(AVProbeData *p)
2678 unsigned int offset;
2682 /* check file header */
2685 /* ignore invalid offset */
2686 if ((offset + 8) > (unsigned int)p->buf_size)
2688 tag = AV_RL32(p->buf + offset + 4);
2690 /* check for obvious tags */
2691 case MKTAG('j','P',' ',' '): /* jpeg 2000 signature */
2692 case MKTAG('m','o','o','v'):
2693 case MKTAG('m','d','a','t'):
2694 case MKTAG('p','n','o','t'): /* detect movs with preview pics like ew.mov and april.mov */
2695 case MKTAG('u','d','t','a'): /* Packet Video PVAuthor adds this and a lot of more junk */
2696 case MKTAG('f','t','y','p'):
2697 return AVPROBE_SCORE_MAX;
2698 /* those are more common words, so rate then a bit less */
2699 case MKTAG('e','d','i','w'): /* xdcam files have reverted first tags */
2700 case MKTAG('w','i','d','e'):
2701 case MKTAG('f','r','e','e'):
2702 case MKTAG('j','u','n','k'):
2703 case MKTAG('p','i','c','t'):
2704 return AVPROBE_SCORE_MAX - 5;
2705 case MKTAG(0x82,0x82,0x7f,0x7d):
2706 case MKTAG('s','k','i','p'):
2707 case MKTAG('u','u','i','d'):
2708 case MKTAG('p','r','f','l'):
2709 offset = AV_RB32(p->buf+offset) + offset;
2710 /* if we only find those cause probedata is too small at least rate them */
2711 score = AVPROBE_SCORE_MAX - 50;
2714 /* unrecognized tag */
2720 // must be done after parsing all trak because there's no order requirement
2721 static void mov_read_chapters(AVFormatContext *s)
2723 MOVContext *mov = s->priv_data;
2724 AVStream *st = NULL;
2725 MOVStreamContext *sc;
2729 for (i = 0; i < s->nb_streams; i++)
2730 if (s->streams[i]->id == mov->chapter_track) {
2735 av_log(s, AV_LOG_ERROR, "Referenced QT chapter track not found\n");
2739 st->discard = AVDISCARD_ALL;
2741 cur_pos = avio_tell(sc->pb);
2743 for (i = 0; i < st->nb_index_entries; i++) {
2744 AVIndexEntry *sample = &st->index_entries[i];
2745 int64_t end = i+1 < st->nb_index_entries ? st->index_entries[i+1].timestamp : st->duration;
2750 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
2751 av_log(s, AV_LOG_ERROR, "Chapter %d not found in file\n", i);
2755 // the first two bytes are the length of the title
2756 len = avio_rb16(sc->pb);
2757 if (len > sample->size-2)
2759 title_len = 2*len + 1;
2760 if (!(title = av_mallocz(title_len)))
2763 // The samples could theoretically be in any encoding if there's an encd
2764 // atom following, but in practice are only utf-8 or utf-16, distinguished
2765 // instead by the presence of a BOM
2769 ch = avio_rb16(sc->pb);
2771 avio_get_str16be(sc->pb, len, title, title_len);
2772 else if (ch == 0xfffe)
2773 avio_get_str16le(sc->pb, len, title, title_len);
2776 if (len == 1 || len == 2)
2779 avio_get_str(sc->pb, INT_MAX, title + 2, len - 1);
2783 avpriv_new_chapter(s, i, st->time_base, sample->timestamp, end, title);
2787 avio_seek(sc->pb, cur_pos, SEEK_SET);
2790 static int parse_timecode_in_framenum_format(AVFormatContext *s, AVStream *st,
2791 uint32_t value, int flags)
2794 char buf[AV_TIMECODE_STR_SIZE];
2795 AVRational rate = {st->codec->time_base.den,
2796 st->codec->time_base.num};
2797 int ret = av_timecode_init(&tc, rate, flags, 0, s);
2800 av_dict_set(&st->metadata, "timecode",
2801 av_timecode_make_string(&tc, buf, value), 0);
2805 static int mov_read_timecode_track(AVFormatContext *s, AVStream *st)
2807 MOVStreamContext *sc = st->priv_data;
2809 int64_t cur_pos = avio_tell(sc->pb);
2812 if (!st->nb_index_entries)
2815 avio_seek(sc->pb, st->index_entries->pos, SEEK_SET);
2816 value = avio_rb32(s->pb);
2818 if (sc->tmcd_flags & 0x0001) flags |= AV_TIMECODE_FLAG_DROPFRAME;
2819 if (sc->tmcd_flags & 0x0002) flags |= AV_TIMECODE_FLAG_24HOURSMAX;
2820 if (sc->tmcd_flags & 0x0004) flags |= AV_TIMECODE_FLAG_ALLOWNEGATIVE;
2822 /* Assume Counter flag is set to 1 in tmcd track (even though it is likely
2823 * not the case) and thus assume "frame number format" instead of QT one.
2824 * No sample with tmcd track can be found with a QT timecode at the moment,
2825 * despite what the tmcd track "suggests" (Counter flag set to 0 means QT
2827 parse_timecode_in_framenum_format(s, st, value, flags);
2829 avio_seek(sc->pb, cur_pos, SEEK_SET);
2833 static int mov_read_close(AVFormatContext *s)
2835 MOVContext *mov = s->priv_data;
2838 for (i = 0; i < s->nb_streams; i++) {
2839 AVStream *st = s->streams[i];
2840 MOVStreamContext *sc = st->priv_data;
2842 av_freep(&sc->ctts_data);
2843 for (j = 0; j < sc->drefs_count; j++) {
2844 av_freep(&sc->drefs[j].path);
2845 av_freep(&sc->drefs[j].dir);
2847 av_freep(&sc->drefs);
2848 av_freep(&sc->trefs);
2849 if (sc->pb && sc->pb != s->pb)
2852 av_freep(&sc->chunk_offsets);
2853 av_freep(&sc->keyframes);
2854 av_freep(&sc->sample_sizes);
2855 av_freep(&sc->stps_data);
2856 av_freep(&sc->stsc_data);
2857 av_freep(&sc->stts_data);
2860 if (mov->dv_demux) {
2861 for (i = 0; i < mov->dv_fctx->nb_streams; i++) {
2862 av_freep(&mov->dv_fctx->streams[i]->codec);
2863 av_freep(&mov->dv_fctx->streams[i]);
2865 av_freep(&mov->dv_fctx);
2866 av_freep(&mov->dv_demux);
2869 av_freep(&mov->trex_data);
2874 static int tmcd_is_referenced(AVFormatContext *s, int tmcd_id)
2878 for (i = 0; i < s->nb_streams; i++) {
2879 AVStream *st = s->streams[i];
2880 MOVStreamContext *sc = st->priv_data;
2882 if (s->streams[i]->codec->codec_type != AVMEDIA_TYPE_VIDEO)
2884 for (j = 0; j < sc->trefs_count; j++)
2885 if (tmcd_id == sc->trefs[j])
2891 /* look for a tmcd track not referenced by any video track, and export it globally */
2892 static void export_orphan_timecode(AVFormatContext *s)
2896 for (i = 0; i < s->nb_streams; i++) {
2897 AVStream *st = s->streams[i];
2899 if (st->codec->codec_tag == MKTAG('t','m','c','d') &&
2900 !tmcd_is_referenced(s, i + 1)) {
2901 AVDictionaryEntry *tcr = av_dict_get(st->metadata, "timecode", NULL, 0);
2903 av_dict_set(&s->metadata, "timecode", tcr->value, 0);
2910 static int mov_read_header(AVFormatContext *s)
2912 MOVContext *mov = s->priv_data;
2913 AVIOContext *pb = s->pb;
2915 MOVAtom atom = { AV_RL32("root") };
2918 /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
2920 atom.size = avio_size(pb);
2922 atom.size = INT64_MAX;
2924 /* check MOV header */
2925 if ((err = mov_read_default(mov, pb, atom)) < 0) {
2926 av_log(s, AV_LOG_ERROR, "error reading header: %d\n", err);
2930 if (!mov->found_moov) {
2931 av_log(s, AV_LOG_ERROR, "moov atom not found\n");
2933 return AVERROR_INVALIDDATA;
2935 av_dlog(mov->fc, "on_parse_exit_offset=%"PRId64"\n", avio_tell(pb));
2938 if (mov->chapter_track > 0)
2939 mov_read_chapters(s);
2940 for (i = 0; i < s->nb_streams; i++)
2941 if (s->streams[i]->codec->codec_tag == AV_RL32("tmcd"))
2942 mov_read_timecode_track(s, s->streams[i]);
2945 /* copy timecode metadata from tmcd tracks to the related video streams */
2946 for (i = 0; i < s->nb_streams; i++) {
2947 AVStream *st = s->streams[i];
2948 MOVStreamContext *sc = st->priv_data;
2949 if (sc->tref_type == AV_RL32("tmcd") && sc->trefs_count) {
2950 AVDictionaryEntry *tcr;
2951 int tmcd_st_id = sc->trefs[0] - 1;
2953 if (tmcd_st_id < 0 || tmcd_st_id >= s->nb_streams)
2955 tcr = av_dict_get(s->streams[tmcd_st_id]->metadata, "timecode", NULL, 0);
2957 av_dict_set(&st->metadata, "timecode", tcr->value, 0);
2960 export_orphan_timecode(s);
2962 for (i = 0; i < s->nb_streams; i++) {
2963 AVStream *st = s->streams[i];
2964 MOVStreamContext *sc = st->priv_data;
2965 if(st->codec->codec_type == AVMEDIA_TYPE_AUDIO && st->codec->codec_id == AV_CODEC_ID_AAC) {
2966 sc->start_pad = 2112;
2967 st->skip_samples = sc->start_pad;
2971 if (mov->trex_data) {
2972 for (i = 0; i < s->nb_streams; i++) {
2973 AVStream *st = s->streams[i];
2974 MOVStreamContext *sc = st->priv_data;
2976 st->codec->bit_rate = sc->data_size * 8 * sc->time_scale / st->duration;
2983 static AVIndexEntry *mov_find_next_sample(AVFormatContext *s, AVStream **st)
2985 AVIndexEntry *sample = NULL;
2986 int64_t best_dts = INT64_MAX;
2988 for (i = 0; i < s->nb_streams; i++) {
2989 AVStream *avst = s->streams[i];
2990 MOVStreamContext *msc = avst->priv_data;
2991 if (msc->pb && msc->current_sample < avst->nb_index_entries) {
2992 AVIndexEntry *current_sample = &avst->index_entries[msc->current_sample];
2993 int64_t dts = av_rescale(current_sample->timestamp, AV_TIME_BASE, msc->time_scale);
2994 av_dlog(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
2995 if (!sample || (!s->pb->seekable && current_sample->pos < sample->pos) ||
2997 ((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb &&
2998 ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
2999 (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) {
3000 sample = current_sample;
3009 static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
3011 MOVContext *mov = s->priv_data;
3012 MOVStreamContext *sc;
3013 AVIndexEntry *sample;
3014 AVStream *st = NULL;
3018 sample = mov_find_next_sample(s, &st);
3020 mov->found_mdat = 0;
3021 if (!mov->next_root_atom)
3023 avio_seek(s->pb, mov->next_root_atom, SEEK_SET);
3024 mov->next_root_atom = 0;
3025 if (mov_read_default(mov, s->pb, (MOVAtom){ AV_RL32("root"), INT64_MAX }) < 0 ||
3028 av_dlog(s, "read fragments, offset 0x%"PRIx64"\n", avio_tell(s->pb));
3032 /* must be done just before reading, to avoid infinite loop on sample */
3033 sc->current_sample++;
3035 if (st->discard != AVDISCARD_ALL) {
3036 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
3037 av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
3038 sc->ffindex, sample->pos);
3039 return AVERROR_INVALIDDATA;
3041 ret = av_get_packet(sc->pb, pkt, sample->size);
3044 if (sc->has_palette) {
3047 pal = av_packet_new_side_data(pkt, AV_PKT_DATA_PALETTE, AVPALETTE_SIZE);
3049 av_log(mov->fc, AV_LOG_ERROR, "Cannot append palette to packet\n");
3051 memcpy(pal, sc->palette, AVPALETTE_SIZE);
3052 sc->has_palette = 0;
3055 #if CONFIG_DV_DEMUXER
3056 if (mov->dv_demux && sc->dv_audio_container) {
3057 avpriv_dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size, pkt->pos);
3060 ret = avpriv_dv_get_packet(mov->dv_demux, pkt);
3067 pkt->stream_index = sc->ffindex;
3068 pkt->dts = sample->timestamp;
3069 if (sc->ctts_data && sc->ctts_index < sc->ctts_count) {
3070 pkt->pts = pkt->dts + sc->dts_shift + sc->ctts_data[sc->ctts_index].duration;
3071 /* update ctts context */
3073 if (sc->ctts_index < sc->ctts_count &&
3074 sc->ctts_data[sc->ctts_index].count == sc->ctts_sample) {
3076 sc->ctts_sample = 0;
3079 pkt->dts = AV_NOPTS_VALUE;
3081 int64_t next_dts = (sc->current_sample < st->nb_index_entries) ?
3082 st->index_entries[sc->current_sample].timestamp : st->duration;
3083 pkt->duration = next_dts - pkt->dts;
3084 pkt->pts = pkt->dts;
3086 if (st->discard == AVDISCARD_ALL)
3088 pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? AV_PKT_FLAG_KEY : 0;
3089 pkt->pos = sample->pos;
3090 av_dlog(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n",
3091 pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
3095 static int mov_seek_stream(AVFormatContext *s, AVStream *st, int64_t timestamp, int flags)
3097 MOVStreamContext *sc = st->priv_data;
3098 int sample, time_sample;
3101 sample = av_index_search_timestamp(st, timestamp, flags);
3102 av_dlog(s, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
3103 if (sample < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
3105 if (sample < 0) /* not sure what to do */
3106 return AVERROR_INVALIDDATA;
3107 sc->current_sample = sample;
3108 av_dlog(s, "stream %d, found sample %d\n", st->index, sc->current_sample);
3109 /* adjust ctts index */
3110 if (sc->ctts_data) {
3112 for (i = 0; i < sc->ctts_count; i++) {
3113 int next = time_sample + sc->ctts_data[i].count;
3114 if (next > sc->current_sample) {
3116 sc->ctts_sample = sc->current_sample - time_sample;
3125 static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
3128 int64_t seek_timestamp, timestamp;
3132 if (stream_index >= s->nb_streams)
3133 return AVERROR_INVALIDDATA;
3135 st = s->streams[stream_index];
3136 sample = mov_seek_stream(s, st, sample_time, flags);
3140 /* adjust seek timestamp to found sample timestamp */
3141 seek_timestamp = st->index_entries[sample].timestamp;
3143 for (i = 0; i < s->nb_streams; i++) {
3144 MOVStreamContext *sc = s->streams[i]->priv_data;
3146 st->skip_samples = (sample_time <= 0) ? sc->start_pad : 0;
3148 if (stream_index == i)
3151 timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
3152 mov_seek_stream(s, st, timestamp, flags);
3157 static const AVOption options[] = {
3158 {"use_absolute_path",
3159 "allow using absolute path when opening alias, this is a possible security issue",
3160 offsetof(MOVContext, use_absolute_path), FF_OPT_TYPE_INT, {.dbl = 0},
3161 0, 1, AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_DECODING_PARAM},
3165 static const AVClass class = {
3166 .class_name = "mov,mp4,m4a,3gp,3g2,mj2",
3167 .item_name = av_default_item_name,
3169 .version = LIBAVUTIL_VERSION_INT,
3172 AVInputFormat ff_mov_demuxer = {
3173 .name = "mov,mp4,m4a,3gp,3g2,mj2",
3174 .long_name = NULL_IF_CONFIG_SMALL("QuickTime / MOV"),
3175 .priv_data_size = sizeof(MOVContext),
3176 .read_probe = mov_probe,
3177 .read_header = mov_read_header,
3178 .read_packet = mov_read_packet,
3179 .read_close = mov_read_close,
3180 .read_seek = mov_read_seek,
3181 .priv_class = &class,