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/intreadwrite.h"
29 #include "libavutil/avstring.h"
30 #include "libavutil/dict.h"
32 #include "avio_internal.h"
35 #include "libavcodec/get_bits.h"
42 * First version by Francois Revol revol@free.fr
43 * Seek function by Gael Chardon gael.dev@4now.net
45 * Features and limitations:
46 * - reads most of the QT files I have (at least the structure),
47 * Sample QuickTime files with mp3 audio can be found at: http://www.3ivx.com/showcase.html
48 * - the code is quite ugly... maybe I won't do it recursive next time :-)
50 * Funny I didn't know about http://sourceforge.net/projects/qt-ffmpeg/
51 * when coding this :) (it's a writer anyway)
53 * Reference documents:
54 * http://www.geocities.com/xhelmboyx/quicktime/formats/qtm-layout.txt
56 * http://developer.apple.com/documentation/QuickTime/QTFF/
57 * http://developer.apple.com/documentation/QuickTime/QTFF/qtff.pdf
58 * QuickTime is a trademark of Apple (AFAIK :))
61 #include "qtpalette.h"
67 /* XXX: it's the first time I make a recursive parser I think... sorry if it's ugly :P */
69 /* those functions parse an atom */
71 0: continue to parse next atom
72 <0: error occurred, exit
74 /* links atom IDs to parse functions */
75 typedef struct MOVParseTableEntry {
77 int (*parse)(MOVContext *ctx, AVIOContext *pb, MOVAtom atom);
80 static const MOVParseTableEntry mov_default_parse_table[];
82 static int mov_metadata_track_or_disc_number(MOVContext *c, AVIOContext *pb, unsigned len, const char *type)
86 avio_rb16(pb); // unknown
87 snprintf(buf, sizeof(buf), "%d", avio_rb16(pb));
88 av_dict_set(&c->fc->metadata, type, buf, 0);
90 avio_rb16(pb); // total tracks/discs
95 static const uint32_t mac_to_unicode[128] = {
96 0x00C4,0x00C5,0x00C7,0x00C9,0x00D1,0x00D6,0x00DC,0x00E1,
97 0x00E0,0x00E2,0x00E4,0x00E3,0x00E5,0x00E7,0x00E9,0x00E8,
98 0x00EA,0x00EB,0x00ED,0x00EC,0x00EE,0x00EF,0x00F1,0x00F3,
99 0x00F2,0x00F4,0x00F6,0x00F5,0x00FA,0x00F9,0x00FB,0x00FC,
100 0x2020,0x00B0,0x00A2,0x00A3,0x00A7,0x2022,0x00B6,0x00DF,
101 0x00AE,0x00A9,0x2122,0x00B4,0x00A8,0x2260,0x00C6,0x00D8,
102 0x221E,0x00B1,0x2264,0x2265,0x00A5,0x00B5,0x2202,0x2211,
103 0x220F,0x03C0,0x222B,0x00AA,0x00BA,0x03A9,0x00E6,0x00F8,
104 0x00BF,0x00A1,0x00AC,0x221A,0x0192,0x2248,0x2206,0x00AB,
105 0x00BB,0x2026,0x00A0,0x00C0,0x00C3,0x00D5,0x0152,0x0153,
106 0x2013,0x2014,0x201C,0x201D,0x2018,0x2019,0x00F7,0x25CA,
107 0x00FF,0x0178,0x2044,0x20AC,0x2039,0x203A,0xFB01,0xFB02,
108 0x2021,0x00B7,0x201A,0x201E,0x2030,0x00C2,0x00CA,0x00C1,
109 0x00CB,0x00C8,0x00CD,0x00CE,0x00CF,0x00CC,0x00D3,0x00D4,
110 0xF8FF,0x00D2,0x00DA,0x00DB,0x00D9,0x0131,0x02C6,0x02DC,
111 0x00AF,0x02D8,0x02D9,0x02DA,0x00B8,0x02DD,0x02DB,0x02C7,
114 static int mov_read_mac_string(MOVContext *c, AVIOContext *pb, int len,
115 char *dst, int dstlen)
118 char *end = dst+dstlen-1;
121 for (i = 0; i < len; i++) {
122 uint8_t t, c = avio_r8(pb);
123 if (c < 0x80 && p < end)
126 PUT_UTF8(mac_to_unicode[c-0x80], t, if (p < end) *p++ = t;);
132 static int mov_read_udta_string(MOVContext *c, AVIOContext *pb, MOVAtom atom)
134 #ifdef MOV_EXPORT_ALL_METADATA
137 char str[1024], key2[16], language[4] = {0};
138 const char *key = NULL;
139 uint16_t str_size, langcode = 0;
140 uint32_t data_type = 0;
141 int (*parse)(MOVContext*, AVIOContext*, unsigned, const char *) = NULL;
144 case MKTAG(0xa9,'n','a','m'): key = "title"; break;
145 case MKTAG(0xa9,'a','u','t'):
146 case MKTAG(0xa9,'A','R','T'): key = "artist"; break;
147 case MKTAG( 'a','A','R','T'): key = "album_artist";break;
148 case MKTAG(0xa9,'w','r','t'): key = "composer"; break;
149 case MKTAG( 'c','p','r','t'):
150 case MKTAG(0xa9,'c','p','y'): key = "copyright"; break;
151 case MKTAG(0xa9,'g','r','p'): key = "grouping"; break;
152 case MKTAG(0xa9,'l','y','r'): key = "lyrics"; break;
153 case MKTAG(0xa9,'c','m','t'):
154 case MKTAG(0xa9,'i','n','f'): key = "comment"; break;
155 case MKTAG(0xa9,'a','l','b'): key = "album"; break;
156 case MKTAG(0xa9,'d','a','y'): key = "date"; break;
157 case MKTAG(0xa9,'g','e','n'): key = "genre"; break;
158 case MKTAG(0xa9,'t','o','o'):
159 case MKTAG(0xa9,'s','w','r'): key = "encoder"; break;
160 case MKTAG(0xa9,'e','n','c'): key = "encoder"; break;
161 case MKTAG( 'd','e','s','c'): key = "description";break;
162 case MKTAG( 'l','d','e','s'): key = "synopsis"; break;
163 case MKTAG( 't','v','s','h'): key = "show"; break;
164 case MKTAG( 't','v','e','n'): key = "episode_id";break;
165 case MKTAG( 't','v','n','n'): key = "network"; break;
166 case MKTAG( 't','r','k','n'): key = "track";
167 parse = mov_metadata_track_or_disc_number; break;
168 case MKTAG( 'd','i','s','k'): key = "disc";
169 parse = mov_metadata_track_or_disc_number; break;
172 if (c->itunes_metadata && atom.size > 8) {
173 int data_size = avio_rb32(pb);
174 int tag = avio_rl32(pb);
175 if (tag == MKTAG('d','a','t','a')) {
176 data_type = avio_rb32(pb); // type
177 avio_rb32(pb); // unknown
178 str_size = data_size - 16;
181 } else if (atom.size > 4 && key && !c->itunes_metadata) {
182 str_size = avio_rb16(pb); // string length
183 langcode = avio_rb16(pb);
184 ff_mov_lang_to_iso639(langcode, language);
187 str_size = atom.size;
189 #ifdef MOV_EXPORT_ALL_METADATA
191 snprintf(tmp_key, 5, "%.4s", (char*)&atom.type);
201 str_size = FFMIN3(sizeof(str)-1, str_size, atom.size);
204 parse(c, pb, str_size, key);
206 if (data_type == 3 || (data_type == 0 && langcode < 0x800)) { // MAC Encoded
207 mov_read_mac_string(c, pb, str_size, str, sizeof(str));
209 avio_read(pb, str, str_size);
212 av_dict_set(&c->fc->metadata, key, str, 0);
213 if (*language && strcmp(language, "und")) {
214 snprintf(key2, sizeof(key2), "%s-%s", key, language);
215 av_dict_set(&c->fc->metadata, key2, str, 0);
218 av_dlog(c->fc, "lang \"%3s\" ", language);
219 av_dlog(c->fc, "tag \"%s\" value \"%s\" atom \"%.4s\" %d %"PRId64"\n",
220 key, str, (char*)&atom.type, str_size, atom.size);
225 static int mov_read_chpl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
228 int i, nb_chapters, str_len, version;
231 if ((atom.size -= 5) < 0)
234 version = avio_r8(pb);
237 avio_rb32(pb); // ???
238 nb_chapters = avio_r8(pb);
240 for (i = 0; i < nb_chapters; i++) {
244 start = avio_rb64(pb);
245 str_len = avio_r8(pb);
247 if ((atom.size -= 9+str_len) < 0)
250 avio_read(pb, str, str_len);
252 ff_new_chapter(c->fc, i, (AVRational){1,10000000}, start, AV_NOPTS_VALUE, str);
257 static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom)
259 int64_t total_size = 0;
264 atom.size = INT64_MAX;
265 while (total_size + 8 < atom.size && !url_feof(pb)) {
266 int (*parse)(MOVContext*, AVIOContext*, MOVAtom) = NULL;
270 a.size = avio_rb32(pb);
271 a.type = avio_rl32(pb);
273 av_dlog(c->fc, "type: %08x '%.4s' parent:'%.4s' sz: %"PRId64" %"PRId64" %"PRId64"\n",
274 a.type, (char*)&a.type, (char*)&atom.type, a.size, total_size, atom.size);
276 if (a.size == 1) { /* 64 bit extended size */
277 a.size = avio_rb64(pb) - 8;
281 a.size = atom.size - total_size;
288 a.size = FFMIN(a.size, atom.size - total_size);
290 for (i = 0; mov_default_parse_table[i].type; i++)
291 if (mov_default_parse_table[i].type == a.type) {
292 parse = mov_default_parse_table[i].parse;
296 // container is user data
297 if (!parse && (atom.type == MKTAG('u','d','t','a') ||
298 atom.type == MKTAG('i','l','s','t')))
299 parse = mov_read_udta_string;
301 if (!parse) { /* skip leaf atoms data */
302 avio_skip(pb, a.size);
304 int64_t start_pos = avio_tell(pb);
306 int err = parse(c, pb, a);
309 if (c->found_moov && c->found_mdat &&
310 (!pb->seekable || start_pos + a.size == avio_size(pb)))
312 left = a.size - avio_tell(pb) + start_pos;
313 if (left > 0) /* skip garbage at atom end */
317 total_size += a.size;
320 if (total_size < atom.size && atom.size < 0x7ffff)
321 avio_skip(pb, atom.size - total_size);
326 static int mov_read_dref(MOVContext *c, AVIOContext *pb, MOVAtom atom)
329 MOVStreamContext *sc;
332 if (c->fc->nb_streams < 1)
334 st = c->fc->streams[c->fc->nb_streams-1];
337 avio_rb32(pb); // version + flags
338 entries = avio_rb32(pb);
339 if (entries >= UINT_MAX / sizeof(*sc->drefs))
341 sc->drefs = av_mallocz(entries * sizeof(*sc->drefs));
343 return AVERROR(ENOMEM);
344 sc->drefs_count = entries;
346 for (i = 0; i < sc->drefs_count; i++) {
347 MOVDref *dref = &sc->drefs[i];
348 uint32_t size = avio_rb32(pb);
349 int64_t next = avio_tell(pb) + size - 4;
354 dref->type = avio_rl32(pb);
355 avio_rb32(pb); // version + flags
356 av_dlog(c->fc, "type %.4s size %d\n", (char*)&dref->type, size);
358 if (dref->type == MKTAG('a','l','i','s') && size > 150) {
359 /* macintosh alias record */
360 uint16_t volume_len, len;
365 volume_len = avio_r8(pb);
366 volume_len = FFMIN(volume_len, 27);
367 avio_read(pb, dref->volume, 27);
368 dref->volume[volume_len] = 0;
369 av_log(c->fc, AV_LOG_DEBUG, "volume %s, len %d\n", dref->volume, volume_len);
374 len = FFMIN(len, 63);
375 avio_read(pb, dref->filename, 63);
376 dref->filename[len] = 0;
377 av_log(c->fc, AV_LOG_DEBUG, "filename %s, len %d\n", dref->filename, len);
381 /* read next level up_from_alias/down_to_target */
382 dref->nlvl_from = avio_rb16(pb);
383 dref->nlvl_to = avio_rb16(pb);
384 av_log(c->fc, AV_LOG_DEBUG, "nlvl from %d, nlvl to %d\n",
385 dref->nlvl_from, dref->nlvl_to);
389 for (type = 0; type != -1 && avio_tell(pb) < next; ) {
390 type = avio_rb16(pb);
392 av_log(c->fc, AV_LOG_DEBUG, "type %d, len %d\n", type, len);
395 if (type == 2) { // absolute path
397 dref->path = av_mallocz(len+1);
399 return AVERROR(ENOMEM);
400 avio_read(pb, dref->path, len);
401 if (len > volume_len && !strncmp(dref->path, dref->volume, volume_len)) {
403 memmove(dref->path, dref->path+volume_len, len);
406 for (j = 0; j < len; j++)
407 if (dref->path[j] == ':')
409 av_log(c->fc, AV_LOG_DEBUG, "path %s\n", dref->path);
410 } else if (type == 0) { // directory name
412 dref->dir = av_malloc(len+1);
414 return AVERROR(ENOMEM);
415 avio_read(pb, dref->dir, len);
417 for (j = 0; j < len; j++)
418 if (dref->dir[j] == ':')
420 av_log(c->fc, AV_LOG_DEBUG, "dir %s\n", dref->dir);
425 avio_seek(pb, next, SEEK_SET);
430 static int mov_read_hdlr(MOVContext *c, AVIOContext *pb, MOVAtom atom)
434 uint32_t av_unused ctype;
436 if (c->fc->nb_streams < 1) // meta before first trak
439 st = c->fc->streams[c->fc->nb_streams-1];
441 avio_r8(pb); /* version */
442 avio_rb24(pb); /* flags */
445 ctype = avio_rl32(pb);
446 type = avio_rl32(pb); /* component subtype */
448 av_dlog(c->fc, "ctype= %.4s (0x%08x)\n", (char*)&ctype, ctype);
449 av_dlog(c->fc, "stype= %.4s\n", (char*)&type);
451 if (type == MKTAG('v','i','d','e'))
452 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
453 else if(type == MKTAG('s','o','u','n'))
454 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
455 else if(type == MKTAG('m','1','a',' '))
456 st->codec->codec_id = CODEC_ID_MP2;
457 else if(type == MKTAG('s','u','b','p'))
458 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
460 avio_rb32(pb); /* component manufacture */
461 avio_rb32(pb); /* component flags */
462 avio_rb32(pb); /* component flags mask */
467 int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb, MOVAtom atom)
472 if (fc->nb_streams < 1)
474 st = fc->streams[fc->nb_streams-1];
476 avio_rb32(pb); /* version + flags */
477 ff_mp4_read_descr(fc, pb, &tag);
478 if (tag == MP4ESDescrTag) {
479 avio_rb16(pb); /* ID */
480 avio_r8(pb); /* priority */
482 avio_rb16(pb); /* ID */
484 ff_mp4_read_descr(fc, pb, &tag);
485 if (tag == MP4DecConfigDescrTag)
486 ff_mp4_read_dec_config_descr(fc, st, pb);
490 static int mov_read_esds(MOVContext *c, AVIOContext *pb, MOVAtom atom)
492 return ff_mov_read_esds(c->fc, pb, atom);
495 static int mov_read_dac3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
498 int ac3info, acmod, lfeon, bsmod;
500 if (c->fc->nb_streams < 1)
502 st = c->fc->streams[c->fc->nb_streams-1];
504 ac3info = avio_rb24(pb);
505 bsmod = (ac3info >> 14) & 0x7;
506 acmod = (ac3info >> 11) & 0x7;
507 lfeon = (ac3info >> 10) & 0x1;
508 st->codec->channels = ((int[]){2,1,2,3,3,4,4,5})[acmod] + lfeon;
509 st->codec->audio_service_type = bsmod;
510 if (st->codec->channels > 1 && bsmod == 0x7)
511 st->codec->audio_service_type = AV_AUDIO_SERVICE_TYPE_KARAOKE;
516 static int mov_read_wfex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
520 if (c->fc->nb_streams < 1)
522 st = c->fc->streams[c->fc->nb_streams-1];
524 ff_get_wav_header(pb, st->codec, atom.size);
529 static int mov_read_pasp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
531 const int num = avio_rb32(pb);
532 const int den = avio_rb32(pb);
535 if (c->fc->nb_streams < 1)
537 st = c->fc->streams[c->fc->nb_streams-1];
539 if ((st->sample_aspect_ratio.den != 1 || st->sample_aspect_ratio.num) && // default
540 (den != st->sample_aspect_ratio.den || num != st->sample_aspect_ratio.num)) {
541 av_log(c->fc, AV_LOG_WARNING,
542 "sample aspect ratio already set to %d:%d, ignoring 'pasp' atom (%d:%d)\n",
543 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
545 } else if (den != 0) {
546 st->sample_aspect_ratio.num = num;
547 st->sample_aspect_ratio.den = den;
552 /* this atom contains actual media data */
553 static int mov_read_mdat(MOVContext *c, AVIOContext *pb, MOVAtom atom)
555 if(atom.size == 0) /* wrong one (MP4) */
558 return 0; /* now go for moov */
561 /* read major brand, minor version and compatible brands and store them as metadata */
562 static int mov_read_ftyp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
566 char minor_ver_str[11]; /* 32 bit integer -> 10 digits + null */
567 char* comp_brands_str;
568 uint8_t type[5] = {0};
570 avio_read(pb, type, 4);
571 if (strcmp(type, "qt "))
573 av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
574 av_dict_set(&c->fc->metadata, "major_brand", type, 0);
575 minor_ver = avio_rb32(pb); /* minor version */
576 snprintf(minor_ver_str, sizeof(minor_ver_str), "%d", minor_ver);
577 av_dict_set(&c->fc->metadata, "minor_version", minor_ver_str, 0);
579 comp_brand_size = atom.size - 8;
580 if (comp_brand_size < 0)
582 comp_brands_str = av_malloc(comp_brand_size + 1); /* Add null terminator */
583 if (!comp_brands_str)
584 return AVERROR(ENOMEM);
585 avio_read(pb, comp_brands_str, comp_brand_size);
586 comp_brands_str[comp_brand_size] = 0;
587 av_dict_set(&c->fc->metadata, "compatible_brands", comp_brands_str, 0);
588 av_freep(&comp_brands_str);
593 /* this atom should contain all header atoms */
594 static int mov_read_moov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
596 if (mov_read_default(c, pb, atom) < 0)
598 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
599 /* so we don't parse the whole file if over a network */
601 return 0; /* now go for mdat */
604 static int mov_read_moof(MOVContext *c, AVIOContext *pb, MOVAtom atom)
606 c->fragment.moof_offset = avio_tell(pb) - 8;
607 av_dlog(c->fc, "moof offset %"PRIx64"\n", c->fragment.moof_offset);
608 return mov_read_default(c, pb, atom);
611 static void mov_metadata_creation_time(AVDictionary **metadata, time_t time)
616 time -= 2082844800; /* seconds between 1904-01-01 and Epoch */
619 strftime(buffer, sizeof(buffer), "%Y-%m-%d %H:%M:%S", ptm);
620 av_dict_set(metadata, "creation_time", buffer, 0);
624 static int mov_read_mdhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
627 MOVStreamContext *sc;
629 char language[4] = {0};
631 time_t creation_time;
633 if (c->fc->nb_streams < 1)
635 st = c->fc->streams[c->fc->nb_streams-1];
638 version = avio_r8(pb);
640 return -1; /* unsupported */
642 avio_rb24(pb); /* flags */
644 creation_time = avio_rb64(pb);
647 creation_time = avio_rb32(pb);
648 avio_rb32(pb); /* modification time */
650 mov_metadata_creation_time(&st->metadata, creation_time);
652 sc->time_scale = avio_rb32(pb);
653 st->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
655 lang = avio_rb16(pb); /* language */
656 if (ff_mov_lang_to_iso639(lang, language))
657 av_dict_set(&st->metadata, "language", language, 0);
658 avio_rb16(pb); /* quality */
663 static int mov_read_mvhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
665 time_t creation_time;
666 int version = avio_r8(pb); /* version */
667 avio_rb24(pb); /* flags */
670 creation_time = avio_rb64(pb);
673 creation_time = avio_rb32(pb);
674 avio_rb32(pb); /* modification time */
676 mov_metadata_creation_time(&c->fc->metadata, creation_time);
677 c->time_scale = avio_rb32(pb); /* time scale */
679 av_dlog(c->fc, "time scale = %i\n", c->time_scale);
681 c->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
682 avio_rb32(pb); /* preferred scale */
684 avio_rb16(pb); /* preferred volume */
686 avio_skip(pb, 10); /* reserved */
688 avio_skip(pb, 36); /* display matrix */
690 avio_rb32(pb); /* preview time */
691 avio_rb32(pb); /* preview duration */
692 avio_rb32(pb); /* poster time */
693 avio_rb32(pb); /* selection time */
694 avio_rb32(pb); /* selection duration */
695 avio_rb32(pb); /* current time */
696 avio_rb32(pb); /* next track ID */
701 static int mov_read_smi(MOVContext *c, AVIOContext *pb, MOVAtom atom)
705 if (c->fc->nb_streams < 1)
707 st = c->fc->streams[c->fc->nb_streams-1];
709 if((uint64_t)atom.size > (1<<30))
712 // currently SVQ3 decoder expect full STSD header - so let's fake it
713 // this should be fixed and just SMI header should be passed
714 av_free(st->codec->extradata);
715 st->codec->extradata = av_mallocz(atom.size + 0x5a + FF_INPUT_BUFFER_PADDING_SIZE);
716 if (!st->codec->extradata)
717 return AVERROR(ENOMEM);
718 st->codec->extradata_size = 0x5a + atom.size;
719 memcpy(st->codec->extradata, "SVQ3", 4); // fake
720 avio_read(pb, st->codec->extradata + 0x5a, atom.size);
721 av_dlog(c->fc, "Reading SMI %"PRId64" %s\n", atom.size, st->codec->extradata + 0x5a);
725 static int mov_read_enda(MOVContext *c, AVIOContext *pb, MOVAtom atom)
730 if (c->fc->nb_streams < 1)
732 st = c->fc->streams[c->fc->nb_streams-1];
734 little_endian = avio_rb16(pb) & 0xFF;
735 av_dlog(c->fc, "enda %d\n", little_endian);
736 if (little_endian == 1) {
737 switch (st->codec->codec_id) {
738 case CODEC_ID_PCM_S24BE:
739 st->codec->codec_id = CODEC_ID_PCM_S24LE;
741 case CODEC_ID_PCM_S32BE:
742 st->codec->codec_id = CODEC_ID_PCM_S32LE;
744 case CODEC_ID_PCM_F32BE:
745 st->codec->codec_id = CODEC_ID_PCM_F32LE;
747 case CODEC_ID_PCM_F64BE:
748 st->codec->codec_id = CODEC_ID_PCM_F64LE;
757 /* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
758 static int mov_read_extradata(MOVContext *c, AVIOContext *pb, MOVAtom atom)
764 if (c->fc->nb_streams < 1) // will happen with jp2 files
766 st= c->fc->streams[c->fc->nb_streams-1];
767 size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
768 if(size > INT_MAX || (uint64_t)atom.size > INT_MAX)
770 buf= av_realloc(st->codec->extradata, size);
773 st->codec->extradata= buf;
774 buf+= st->codec->extradata_size;
775 st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE;
776 AV_WB32( buf , atom.size + 8);
777 AV_WL32( buf + 4, atom.type);
778 avio_read(pb, buf + 8, atom.size);
782 static int mov_read_wave(MOVContext *c, AVIOContext *pb, MOVAtom atom)
786 if (c->fc->nb_streams < 1)
788 st = c->fc->streams[c->fc->nb_streams-1];
790 if((uint64_t)atom.size > (1<<30))
793 if (st->codec->codec_id == CODEC_ID_QDM2 || st->codec->codec_id == CODEC_ID_QDMC) {
794 // pass all frma atom to codec, needed at least for QDMC and QDM2
795 av_free(st->codec->extradata);
796 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
797 if (!st->codec->extradata)
798 return AVERROR(ENOMEM);
799 st->codec->extradata_size = atom.size;
800 avio_read(pb, st->codec->extradata, atom.size);
801 } else if (atom.size > 8) { /* to read frma, esds atoms */
802 if (mov_read_default(c, pb, atom) < 0)
805 avio_skip(pb, atom.size);
810 * This function reads atom content and puts data in extradata without tag
811 * nor size unlike mov_read_extradata.
813 static int mov_read_glbl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
817 if (c->fc->nb_streams < 1)
819 st = c->fc->streams[c->fc->nb_streams-1];
821 if((uint64_t)atom.size > (1<<30))
824 av_free(st->codec->extradata);
825 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
826 if (!st->codec->extradata)
827 return AVERROR(ENOMEM);
828 st->codec->extradata_size = atom.size;
829 avio_read(pb, st->codec->extradata, atom.size);
834 * An strf atom is a BITMAPINFOHEADER struct. This struct is 40 bytes itself,
835 * but can have extradata appended at the end after the 40 bytes belonging
838 static int mov_read_strf(MOVContext *c, AVIOContext *pb, MOVAtom atom)
842 if (c->fc->nb_streams < 1)
846 st = c->fc->streams[c->fc->nb_streams-1];
848 if((uint64_t)atom.size > (1<<30))
851 av_free(st->codec->extradata);
852 st->codec->extradata = av_mallocz(atom.size - 40 + FF_INPUT_BUFFER_PADDING_SIZE);
853 if (!st->codec->extradata)
854 return AVERROR(ENOMEM);
855 st->codec->extradata_size = atom.size - 40;
857 avio_read(pb, st->codec->extradata, atom.size - 40);
861 static int mov_read_stco(MOVContext *c, AVIOContext *pb, MOVAtom atom)
864 MOVStreamContext *sc;
865 unsigned int i, entries;
867 if (c->fc->nb_streams < 1)
869 st = c->fc->streams[c->fc->nb_streams-1];
872 avio_r8(pb); /* version */
873 avio_rb24(pb); /* flags */
875 entries = avio_rb32(pb);
877 if(entries >= UINT_MAX/sizeof(int64_t))
880 sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
881 if (!sc->chunk_offsets)
882 return AVERROR(ENOMEM);
883 sc->chunk_count = entries;
885 if (atom.type == MKTAG('s','t','c','o'))
886 for(i=0; i<entries; i++)
887 sc->chunk_offsets[i] = avio_rb32(pb);
888 else if (atom.type == MKTAG('c','o','6','4'))
889 for(i=0; i<entries; i++)
890 sc->chunk_offsets[i] = avio_rb64(pb);
898 * Compute codec id for 'lpcm' tag.
899 * See CoreAudioTypes and AudioStreamBasicDescription at Apple.
901 enum CodecID ff_mov_get_lpcm_codec_id(int bps, int flags)
903 if (flags & 1) { // floating point
904 if (flags & 2) { // big endian
905 if (bps == 32) return CODEC_ID_PCM_F32BE;
906 else if (bps == 64) return CODEC_ID_PCM_F64BE;
908 if (bps == 32) return CODEC_ID_PCM_F32LE;
909 else if (bps == 64) return CODEC_ID_PCM_F64LE;
915 if (flags & 4) return CODEC_ID_PCM_S8;
916 else return CODEC_ID_PCM_U8;
917 else if (bps == 16) return CODEC_ID_PCM_S16BE;
918 else if (bps == 24) return CODEC_ID_PCM_S24BE;
919 else if (bps == 32) return CODEC_ID_PCM_S32BE;
922 if (flags & 4) return CODEC_ID_PCM_S8;
923 else return CODEC_ID_PCM_U8;
924 else if (bps == 16) return CODEC_ID_PCM_S16LE;
925 else if (bps == 24) return CODEC_ID_PCM_S24LE;
926 else if (bps == 32) return CODEC_ID_PCM_S32LE;
929 return CODEC_ID_NONE;
932 int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries)
935 MOVStreamContext *sc;
936 int j, pseudo_stream_id;
938 if (c->fc->nb_streams < 1)
940 st = c->fc->streams[c->fc->nb_streams-1];
943 for(pseudo_stream_id=0; pseudo_stream_id<entries; pseudo_stream_id++) {
944 //Parsing Sample description table
947 MOVAtom a = { AV_RL32("stsd") };
948 int64_t start_pos = avio_tell(pb);
949 int size = avio_rb32(pb); /* size */
950 uint32_t format = avio_rl32(pb); /* data format */
953 avio_rb32(pb); /* reserved */
954 avio_rb16(pb); /* reserved */
955 dref_id = avio_rb16(pb);
958 if (st->codec->codec_tag &&
959 st->codec->codec_tag != format &&
960 (c->fc->video_codec_id ? ff_codec_get_id(codec_movvideo_tags, format) != c->fc->video_codec_id
961 : st->codec->codec_tag != MKTAG('j','p','e','g'))
963 /* Multiple fourcc, we skip JPEG. This is not correct, we should
964 * export it as a separate AVStream but this needs a few changes
965 * in the MOV demuxer, patch welcome. */
967 av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n");
968 avio_skip(pb, size - (avio_tell(pb) - start_pos));
971 /* we cannot demux concatenated h264 streams because of different extradata */
972 if (st->codec->codec_tag && st->codec->codec_tag == AV_RL32("avc1"))
974 sc->pseudo_stream_id = st->codec->codec_tag ? -1 : pseudo_stream_id;
975 sc->dref_id= dref_id;
977 st->codec->codec_tag = format;
978 id = ff_codec_get_id(codec_movaudio_tags, format);
979 if (id<=0 && ((format&0xFFFF) == 'm'+('s'<<8) || (format&0xFFFF) == 'T'+('S'<<8)))
980 id = ff_codec_get_id(ff_codec_wav_tags, av_bswap32(format)&0xFFFF);
982 if (st->codec->codec_type != AVMEDIA_TYPE_VIDEO && id > 0) {
983 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
984 } else if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO && /* do not overwrite codec type */
985 format && format != MKTAG('m','p','4','s')) { /* skip old asf mpeg4 tag */
986 id = ff_codec_get_id(codec_movvideo_tags, format);
988 id = ff_codec_get_id(ff_codec_bmp_tags, format);
990 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
991 else if(st->codec->codec_type == AVMEDIA_TYPE_DATA){
992 id = ff_codec_get_id(ff_codec_movsubtitle_tags, format);
994 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
998 av_dlog(c->fc, "size=%d 4CC= %c%c%c%c codec_type=%d\n", size,
999 (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff,
1000 (format >> 24) & 0xff, st->codec->codec_type);
1002 if(st->codec->codec_type==AVMEDIA_TYPE_VIDEO) {
1003 unsigned int color_depth, len;
1004 int color_greyscale;
1006 st->codec->codec_id = id;
1007 avio_rb16(pb); /* version */
1008 avio_rb16(pb); /* revision level */
1009 avio_rb32(pb); /* vendor */
1010 avio_rb32(pb); /* temporal quality */
1011 avio_rb32(pb); /* spatial quality */
1013 st->codec->width = avio_rb16(pb); /* width */
1014 st->codec->height = avio_rb16(pb); /* height */
1016 avio_rb32(pb); /* horiz resolution */
1017 avio_rb32(pb); /* vert resolution */
1018 avio_rb32(pb); /* data size, always 0 */
1019 avio_rb16(pb); /* frames per samples */
1021 len = avio_r8(pb); /* codec name, pascal string */
1024 mov_read_mac_string(c, pb, len, st->codec->codec_name, 32);
1026 avio_skip(pb, 31 - len);
1027 /* codec_tag YV12 triggers an UV swap in rawdec.c */
1028 if (!memcmp(st->codec->codec_name, "Planar Y'CbCr 8-bit 4:2:0", 25))
1029 st->codec->codec_tag=MKTAG('I', '4', '2', '0');
1031 st->codec->bits_per_coded_sample = avio_rb16(pb); /* depth */
1032 st->codec->color_table_id = avio_rb16(pb); /* colortable id */
1033 av_dlog(c->fc, "depth %d, ctab id %d\n",
1034 st->codec->bits_per_coded_sample, st->codec->color_table_id);
1035 /* figure out the palette situation */
1036 color_depth = st->codec->bits_per_coded_sample & 0x1F;
1037 color_greyscale = st->codec->bits_per_coded_sample & 0x20;
1039 /* if the depth is 2, 4, or 8 bpp, file is palettized */
1040 if ((color_depth == 2) || (color_depth == 4) ||
1041 (color_depth == 8)) {
1042 /* for palette traversal */
1043 unsigned int color_start, color_count, color_end;
1044 unsigned char r, g, b;
1046 if (color_greyscale) {
1047 int color_index, color_dec;
1048 /* compute the greyscale palette */
1049 st->codec->bits_per_coded_sample = color_depth;
1050 color_count = 1 << color_depth;
1052 color_dec = 256 / (color_count - 1);
1053 for (j = 0; j < color_count; j++) {
1054 r = g = b = color_index;
1056 (r << 16) | (g << 8) | (b);
1057 color_index -= color_dec;
1058 if (color_index < 0)
1061 } else if (st->codec->color_table_id) {
1062 const uint8_t *color_table;
1063 /* if flag bit 3 is set, use the default palette */
1064 color_count = 1 << color_depth;
1065 if (color_depth == 2)
1066 color_table = ff_qt_default_palette_4;
1067 else if (color_depth == 4)
1068 color_table = ff_qt_default_palette_16;
1070 color_table = ff_qt_default_palette_256;
1072 for (j = 0; j < color_count; j++) {
1073 r = color_table[j * 3 + 0];
1074 g = color_table[j * 3 + 1];
1075 b = color_table[j * 3 + 2];
1077 (r << 16) | (g << 8) | (b);
1080 /* load the palette from the file */
1081 color_start = avio_rb32(pb);
1082 color_count = avio_rb16(pb);
1083 color_end = avio_rb16(pb);
1084 if ((color_start <= 255) &&
1085 (color_end <= 255)) {
1086 for (j = color_start; j <= color_end; j++) {
1087 /* each R, G, or B component is 16 bits;
1088 * only use the top 8 bits; skip alpha bytes
1099 (r << 16) | (g << 8) | (b);
1103 sc->has_palette = 1;
1105 } else if(st->codec->codec_type==AVMEDIA_TYPE_AUDIO) {
1106 int bits_per_sample, flags;
1107 uint16_t version = avio_rb16(pb);
1109 st->codec->codec_id = id;
1110 avio_rb16(pb); /* revision level */
1111 avio_rb32(pb); /* vendor */
1113 st->codec->channels = avio_rb16(pb); /* channel count */
1114 av_dlog(c->fc, "audio channels %d\n", st->codec->channels);
1115 st->codec->bits_per_coded_sample = avio_rb16(pb); /* sample size */
1117 sc->audio_cid = avio_rb16(pb);
1118 avio_rb16(pb); /* packet size = 0 */
1120 st->codec->sample_rate = ((avio_rb32(pb) >> 16));
1122 //Read QT version 1 fields. In version 0 these do not exist.
1123 av_dlog(c->fc, "version =%d, isom =%d\n",version,c->isom);
1126 sc->samples_per_frame = avio_rb32(pb);
1127 avio_rb32(pb); /* bytes per packet */
1128 sc->bytes_per_frame = avio_rb32(pb);
1129 avio_rb32(pb); /* bytes per sample */
1130 } else if(version==2) {
1131 avio_rb32(pb); /* sizeof struct only */
1132 st->codec->sample_rate = av_int2dbl(avio_rb64(pb)); /* float 64 */
1133 st->codec->channels = avio_rb32(pb);
1134 avio_rb32(pb); /* always 0x7F000000 */
1135 st->codec->bits_per_coded_sample = avio_rb32(pb); /* bits per channel if sound is uncompressed */
1136 flags = avio_rb32(pb); /* lpcm format specific flag */
1137 sc->bytes_per_frame = avio_rb32(pb); /* bytes per audio packet if constant */
1138 sc->samples_per_frame = avio_rb32(pb); /* lpcm frames per audio packet if constant */
1139 if (format == MKTAG('l','p','c','m'))
1140 st->codec->codec_id = ff_mov_get_lpcm_codec_id(st->codec->bits_per_coded_sample, flags);
1144 switch (st->codec->codec_id) {
1145 case CODEC_ID_PCM_S8:
1146 case CODEC_ID_PCM_U8:
1147 if (st->codec->bits_per_coded_sample == 16)
1148 st->codec->codec_id = CODEC_ID_PCM_S16BE;
1150 case CODEC_ID_PCM_S16LE:
1151 case CODEC_ID_PCM_S16BE:
1152 if (st->codec->bits_per_coded_sample == 8)
1153 st->codec->codec_id = CODEC_ID_PCM_S8;
1154 else if (st->codec->bits_per_coded_sample == 24)
1155 st->codec->codec_id =
1156 st->codec->codec_id == CODEC_ID_PCM_S16BE ?
1157 CODEC_ID_PCM_S24BE : CODEC_ID_PCM_S24LE;
1159 /* set values for old format before stsd version 1 appeared */
1160 case CODEC_ID_MACE3:
1161 sc->samples_per_frame = 6;
1162 sc->bytes_per_frame = 2*st->codec->channels;
1164 case CODEC_ID_MACE6:
1165 sc->samples_per_frame = 6;
1166 sc->bytes_per_frame = 1*st->codec->channels;
1168 case CODEC_ID_ADPCM_IMA_QT:
1169 sc->samples_per_frame = 64;
1170 sc->bytes_per_frame = 34*st->codec->channels;
1173 sc->samples_per_frame = 160;
1174 sc->bytes_per_frame = 33;
1180 bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
1181 if (bits_per_sample) {
1182 st->codec->bits_per_coded_sample = bits_per_sample;
1183 sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
1185 } else if(st->codec->codec_type==AVMEDIA_TYPE_SUBTITLE){
1186 // ttxt stsd contains display flags, justification, background
1187 // color, fonts, and default styles, so fake an atom to read it
1188 MOVAtom fake_atom = { .size = size - (avio_tell(pb) - start_pos) };
1189 if (format != AV_RL32("mp4s")) // mp4s contains a regular esds atom
1190 mov_read_glbl(c, pb, fake_atom);
1191 st->codec->codec_id= id;
1192 st->codec->width = sc->width;
1193 st->codec->height = sc->height;
1195 /* other codec type, just skip (rtp, mp4s, tmcd ...) */
1196 avio_skip(pb, size - (avio_tell(pb) - start_pos));
1198 /* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */
1199 a.size = size - (avio_tell(pb) - start_pos);
1201 if (mov_read_default(c, pb, a) < 0)
1203 } else if (a.size > 0)
1204 avio_skip(pb, a.size);
1207 if(st->codec->codec_type==AVMEDIA_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1)
1208 st->codec->sample_rate= sc->time_scale;
1210 /* special codec parameters handling */
1211 switch (st->codec->codec_id) {
1212 #if CONFIG_DV_DEMUXER
1213 case CODEC_ID_DVAUDIO:
1214 c->dv_fctx = avformat_alloc_context();
1215 c->dv_demux = dv_init_demux(c->dv_fctx);
1217 av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
1220 sc->dv_audio_container = 1;
1221 st->codec->codec_id = CODEC_ID_PCM_S16LE;
1224 /* no ifdef since parameters are always those */
1225 case CODEC_ID_QCELP:
1226 // force sample rate for qcelp when not stored in mov
1227 if (st->codec->codec_tag != MKTAG('Q','c','l','p'))
1228 st->codec->sample_rate = 8000;
1229 st->codec->frame_size= 160;
1230 st->codec->channels= 1; /* really needed */
1232 case CODEC_ID_AMR_NB:
1233 case CODEC_ID_AMR_WB:
1234 st->codec->frame_size= sc->samples_per_frame;
1235 st->codec->channels= 1; /* really needed */
1236 /* force sample rate for amr, stsd in 3gp does not store sample rate */
1237 if (st->codec->codec_id == CODEC_ID_AMR_NB)
1238 st->codec->sample_rate = 8000;
1239 else if (st->codec->codec_id == CODEC_ID_AMR_WB)
1240 st->codec->sample_rate = 16000;
1244 st->codec->codec_type = AVMEDIA_TYPE_AUDIO; /* force type after stsd for m1a hdlr */
1245 st->need_parsing = AVSTREAM_PARSE_FULL;
1248 case CODEC_ID_ADPCM_MS:
1249 case CODEC_ID_ADPCM_IMA_WAV:
1250 st->codec->frame_size = sc->samples_per_frame;
1251 st->codec->block_align = sc->bytes_per_frame;
1254 if (st->codec->extradata_size == 36) {
1255 st->codec->frame_size = AV_RB32(st->codec->extradata+12);
1256 st->codec->channels = AV_RB8 (st->codec->extradata+21);
1257 st->codec->sample_rate = AV_RB32(st->codec->extradata+32);
1267 static int mov_read_stsd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1271 avio_r8(pb); /* version */
1272 avio_rb24(pb); /* flags */
1273 entries = avio_rb32(pb);
1275 return ff_mov_read_stsd_entries(c, pb, entries);
1278 static int mov_read_stsc(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1281 MOVStreamContext *sc;
1282 unsigned int i, entries;
1284 if (c->fc->nb_streams < 1)
1286 st = c->fc->streams[c->fc->nb_streams-1];
1289 avio_r8(pb); /* version */
1290 avio_rb24(pb); /* flags */
1292 entries = avio_rb32(pb);
1294 av_dlog(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
1296 if(entries >= UINT_MAX / sizeof(*sc->stsc_data))
1298 sc->stsc_data = av_malloc(entries * sizeof(*sc->stsc_data));
1300 return AVERROR(ENOMEM);
1301 sc->stsc_count = entries;
1303 for(i=0; i<entries; i++) {
1304 sc->stsc_data[i].first = avio_rb32(pb);
1305 sc->stsc_data[i].count = avio_rb32(pb);
1306 sc->stsc_data[i].id = avio_rb32(pb);
1311 static int mov_read_stps(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1314 MOVStreamContext *sc;
1315 unsigned i, entries;
1317 if (c->fc->nb_streams < 1)
1319 st = c->fc->streams[c->fc->nb_streams-1];
1322 avio_rb32(pb); // version + flags
1324 entries = avio_rb32(pb);
1325 if (entries >= UINT_MAX / sizeof(*sc->stps_data))
1327 sc->stps_data = av_malloc(entries * sizeof(*sc->stps_data));
1329 return AVERROR(ENOMEM);
1330 sc->stps_count = entries;
1332 for (i = 0; i < entries; i++) {
1333 sc->stps_data[i] = avio_rb32(pb);
1334 //av_dlog(c->fc, "stps %d\n", sc->stps_data[i]);
1340 static int mov_read_stss(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1343 MOVStreamContext *sc;
1344 unsigned int i, entries;
1346 if (c->fc->nb_streams < 1)
1348 st = c->fc->streams[c->fc->nb_streams-1];
1351 avio_r8(pb); /* version */
1352 avio_rb24(pb); /* flags */
1354 entries = avio_rb32(pb);
1356 av_dlog(c->fc, "keyframe_count = %d\n", entries);
1358 if(entries >= UINT_MAX / sizeof(int))
1360 sc->keyframes = av_malloc(entries * sizeof(int));
1362 return AVERROR(ENOMEM);
1363 sc->keyframe_count = entries;
1365 for(i=0; i<entries; i++) {
1366 sc->keyframes[i] = avio_rb32(pb);
1367 //av_dlog(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
1372 static int mov_read_stsz(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1375 MOVStreamContext *sc;
1376 unsigned int i, entries, sample_size, field_size, num_bytes;
1380 if (c->fc->nb_streams < 1)
1382 st = c->fc->streams[c->fc->nb_streams-1];
1385 avio_r8(pb); /* version */
1386 avio_rb24(pb); /* flags */
1388 if (atom.type == MKTAG('s','t','s','z')) {
1389 sample_size = avio_rb32(pb);
1390 if (!sc->sample_size) /* do not overwrite value computed in stsd */
1391 sc->sample_size = sample_size;
1395 avio_rb24(pb); /* reserved */
1396 field_size = avio_r8(pb);
1398 entries = avio_rb32(pb);
1400 av_dlog(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, entries);
1402 sc->sample_count = entries;
1406 if (field_size != 4 && field_size != 8 && field_size != 16 && field_size != 32) {
1407 av_log(c->fc, AV_LOG_ERROR, "Invalid sample field size %d\n", field_size);
1411 if (entries >= UINT_MAX / sizeof(int) || entries >= (UINT_MAX - 4) / field_size)
1413 sc->sample_sizes = av_malloc(entries * sizeof(int));
1414 if (!sc->sample_sizes)
1415 return AVERROR(ENOMEM);
1417 num_bytes = (entries*field_size+4)>>3;
1419 buf = av_malloc(num_bytes+FF_INPUT_BUFFER_PADDING_SIZE);
1421 av_freep(&sc->sample_sizes);
1422 return AVERROR(ENOMEM);
1425 if (avio_read(pb, buf, num_bytes) < num_bytes) {
1426 av_freep(&sc->sample_sizes);
1431 init_get_bits(&gb, buf, 8*num_bytes);
1433 for(i=0; i<entries; i++)
1434 sc->sample_sizes[i] = get_bits_long(&gb, field_size);
1440 static int mov_read_stts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1443 MOVStreamContext *sc;
1444 unsigned int i, entries;
1446 int64_t total_sample_count=0;
1448 if (c->fc->nb_streams < 1)
1450 st = c->fc->streams[c->fc->nb_streams-1];
1453 avio_r8(pb); /* version */
1454 avio_rb24(pb); /* flags */
1455 entries = avio_rb32(pb);
1457 av_dlog(c->fc, "track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries);
1459 if(entries >= UINT_MAX / sizeof(*sc->stts_data))
1461 sc->stts_data = av_malloc(entries * sizeof(*sc->stts_data));
1463 return AVERROR(ENOMEM);
1464 sc->stts_count = entries;
1466 for(i=0; i<entries; i++) {
1467 int sample_duration;
1470 sample_count=avio_rb32(pb);
1471 sample_duration = avio_rb32(pb);
1472 sc->stts_data[i].count= sample_count;
1473 sc->stts_data[i].duration= sample_duration;
1475 av_dlog(c->fc, "sample_count=%d, sample_duration=%d\n",sample_count,sample_duration);
1477 duration+=(int64_t)sample_duration*sample_count;
1478 total_sample_count+=sample_count;
1481 st->nb_frames= total_sample_count;
1483 st->duration= duration;
1487 static int mov_read_ctts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1490 MOVStreamContext *sc;
1491 unsigned int i, entries;
1493 if (c->fc->nb_streams < 1)
1495 st = c->fc->streams[c->fc->nb_streams-1];
1498 avio_r8(pb); /* version */
1499 avio_rb24(pb); /* flags */
1500 entries = avio_rb32(pb);
1502 av_dlog(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
1504 if(entries >= UINT_MAX / sizeof(*sc->ctts_data))
1506 sc->ctts_data = av_malloc(entries * sizeof(*sc->ctts_data));
1508 return AVERROR(ENOMEM);
1509 sc->ctts_count = entries;
1511 for(i=0; i<entries; i++) {
1512 int count =avio_rb32(pb);
1513 int duration =avio_rb32(pb);
1515 sc->ctts_data[i].count = count;
1516 sc->ctts_data[i].duration= duration;
1517 if (duration < 0 && i+1<entries)
1518 sc->dts_shift = FFMAX(sc->dts_shift, -duration);
1521 av_dlog(c->fc, "dts shift %d\n", sc->dts_shift);
1526 static void mov_build_index(MOVContext *mov, AVStream *st)
1528 MOVStreamContext *sc = st->priv_data;
1529 int64_t current_offset;
1530 int64_t current_dts = 0;
1531 unsigned int stts_index = 0;
1532 unsigned int stsc_index = 0;
1533 unsigned int stss_index = 0;
1534 unsigned int stps_index = 0;
1536 uint64_t stream_size = 0;
1538 /* adjust first dts according to edit list */
1539 if (sc->time_offset && mov->time_scale > 0) {
1540 int rescaled = sc->time_offset < 0 ? av_rescale(sc->time_offset, sc->time_scale, mov->time_scale) : sc->time_offset;
1541 current_dts = -rescaled;
1542 if (sc->ctts_data && sc->stts_data &&
1543 sc->ctts_data[0].duration / FFMAX(sc->stts_data[0].duration, 1) > 16) {
1544 /* more than 16 frames delay, dts are likely wrong
1545 this happens with files created by iMovie */
1547 st->codec->has_b_frames = 1;
1551 /* only use old uncompressed audio chunk demuxing when stts specifies it */
1552 if (!(st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
1553 sc->stts_count == 1 && sc->stts_data[0].duration == 1)) {
1554 unsigned int current_sample = 0;
1555 unsigned int stts_sample = 0;
1556 unsigned int sample_size;
1557 unsigned int distance = 0;
1558 int key_off = sc->keyframes && sc->keyframes[0] == 1;
1560 current_dts -= sc->dts_shift;
1562 if (sc->sample_count >= UINT_MAX / sizeof(*st->index_entries))
1564 st->index_entries = av_malloc(sc->sample_count*sizeof(*st->index_entries));
1565 if (!st->index_entries)
1567 st->index_entries_allocated_size = sc->sample_count*sizeof(*st->index_entries);
1569 for (i = 0; i < sc->chunk_count; i++) {
1570 current_offset = sc->chunk_offsets[i];
1571 while (stsc_index + 1 < sc->stsc_count &&
1572 i + 1 == sc->stsc_data[stsc_index + 1].first)
1574 for (j = 0; j < sc->stsc_data[stsc_index].count; j++) {
1576 if (current_sample >= sc->sample_count) {
1577 av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
1581 if (!sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index]) {
1583 if (stss_index + 1 < sc->keyframe_count)
1585 } else if (sc->stps_count && current_sample+key_off == sc->stps_data[stps_index]) {
1587 if (stps_index + 1 < sc->stps_count)
1592 sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
1593 if(sc->pseudo_stream_id == -1 ||
1594 sc->stsc_data[stsc_index].id - 1 == sc->pseudo_stream_id) {
1595 AVIndexEntry *e = &st->index_entries[st->nb_index_entries++];
1596 e->pos = current_offset;
1597 e->timestamp = current_dts;
1598 e->size = sample_size;
1599 e->min_distance = distance;
1600 e->flags = keyframe ? AVINDEX_KEYFRAME : 0;
1601 av_dlog(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
1602 "size %d, distance %d, keyframe %d\n", st->index, current_sample,
1603 current_offset, current_dts, sample_size, distance, keyframe);
1606 current_offset += sample_size;
1607 stream_size += sample_size;
1608 current_dts += sc->stts_data[stts_index].duration;
1612 if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
1618 if (st->duration > 0)
1619 st->codec->bit_rate = stream_size*8*sc->time_scale/st->duration;
1621 unsigned chunk_samples, total = 0;
1623 // compute total chunk count
1624 for (i = 0; i < sc->stsc_count; i++) {
1625 unsigned count, chunk_count;
1627 chunk_samples = sc->stsc_data[i].count;
1628 if (sc->samples_per_frame && chunk_samples % sc->samples_per_frame) {
1629 av_log(mov->fc, AV_LOG_ERROR, "error unaligned chunk\n");
1633 if (sc->samples_per_frame >= 160) { // gsm
1634 count = chunk_samples / sc->samples_per_frame;
1635 } else if (sc->samples_per_frame > 1) {
1636 unsigned samples = (1024/sc->samples_per_frame)*sc->samples_per_frame;
1637 count = (chunk_samples+samples-1) / samples;
1639 count = (chunk_samples+1023) / 1024;
1642 if (i < sc->stsc_count - 1)
1643 chunk_count = sc->stsc_data[i+1].first - sc->stsc_data[i].first;
1645 chunk_count = sc->chunk_count - (sc->stsc_data[i].first - 1);
1646 total += chunk_count * count;
1649 av_dlog(mov->fc, "chunk count %d\n", total);
1650 if (total >= UINT_MAX / sizeof(*st->index_entries))
1652 st->index_entries = av_malloc(total*sizeof(*st->index_entries));
1653 if (!st->index_entries)
1655 st->index_entries_allocated_size = total*sizeof(*st->index_entries);
1658 for (i = 0; i < sc->chunk_count; i++) {
1659 current_offset = sc->chunk_offsets[i];
1660 if (stsc_index + 1 < sc->stsc_count &&
1661 i + 1 == sc->stsc_data[stsc_index + 1].first)
1663 chunk_samples = sc->stsc_data[stsc_index].count;
1665 while (chunk_samples > 0) {
1667 unsigned size, samples;
1669 if (sc->samples_per_frame >= 160) { // gsm
1670 samples = sc->samples_per_frame;
1671 size = sc->bytes_per_frame;
1673 if (sc->samples_per_frame > 1) {
1674 samples = FFMIN((1024 / sc->samples_per_frame)*
1675 sc->samples_per_frame, chunk_samples);
1676 size = (samples / sc->samples_per_frame) * sc->bytes_per_frame;
1678 samples = FFMIN(1024, chunk_samples);
1679 size = samples * sc->sample_size;
1683 if (st->nb_index_entries >= total) {
1684 av_log(mov->fc, AV_LOG_ERROR, "wrong chunk count %d\n", total);
1687 e = &st->index_entries[st->nb_index_entries++];
1688 e->pos = current_offset;
1689 e->timestamp = current_dts;
1691 e->min_distance = 0;
1692 e->flags = AVINDEX_KEYFRAME;
1693 av_dlog(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", "
1694 "size %d, duration %d\n", st->index, i, current_offset, current_dts,
1697 current_offset += size;
1698 current_dts += samples;
1699 chunk_samples -= samples;
1705 static int mov_open_dref(AVIOContext **pb, const char *src, MOVDref *ref)
1707 /* try relative path, we do not try the absolute because it can leak information about our
1708 system to an attacker */
1709 if (ref->nlvl_to > 0 && ref->nlvl_from > 0) {
1710 char filename[1024];
1711 const char *src_path;
1714 /* find a source dir */
1715 src_path = strrchr(src, '/');
1721 /* find a next level down to target */
1722 for (i = 0, l = strlen(ref->path) - 1; l >= 0; l--)
1723 if (ref->path[l] == '/') {
1724 if (i == ref->nlvl_to - 1)
1730 /* compose filename if next level down to target was found */
1731 if (i == ref->nlvl_to - 1 && src_path - src < sizeof(filename)) {
1732 memcpy(filename, src, src_path - src);
1733 filename[src_path - src] = 0;
1735 for (i = 1; i < ref->nlvl_from; i++)
1736 av_strlcat(filename, "../", 1024);
1738 av_strlcat(filename, ref->path + l + 1, 1024);
1740 if (!avio_open(pb, filename, AVIO_FLAG_READ))
1745 return AVERROR(ENOENT);
1748 static int mov_read_trak(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1751 MOVStreamContext *sc;
1754 st = av_new_stream(c->fc, c->fc->nb_streams);
1755 if (!st) return AVERROR(ENOMEM);
1756 sc = av_mallocz(sizeof(MOVStreamContext));
1757 if (!sc) return AVERROR(ENOMEM);
1760 st->codec->codec_type = AVMEDIA_TYPE_DATA;
1761 sc->ffindex = st->index;
1763 if ((ret = mov_read_default(c, pb, atom)) < 0)
1767 if (sc->chunk_count && (!sc->stts_count || !sc->stsc_count ||
1768 (!sc->sample_size && !sc->sample_count))) {
1769 av_log(c->fc, AV_LOG_ERROR, "stream %d, missing mandatory atoms, broken header\n",
1774 if (sc->time_scale <= 0) {
1775 av_log(c->fc, AV_LOG_WARNING, "stream %d, timescale not set\n", st->index);
1776 sc->time_scale = c->time_scale;
1777 if (sc->time_scale <= 0)
1781 av_set_pts_info(st, 64, 1, sc->time_scale);
1783 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
1784 !st->codec->frame_size && sc->stts_count == 1) {
1785 st->codec->frame_size = av_rescale(sc->stts_data[0].duration,
1786 st->codec->sample_rate, sc->time_scale);
1787 av_dlog(c->fc, "frame size %d\n", st->codec->frame_size);
1790 mov_build_index(c, st);
1792 if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) {
1793 MOVDref *dref = &sc->drefs[sc->dref_id - 1];
1794 if (mov_open_dref(&sc->pb, c->fc->filename, dref) < 0)
1795 av_log(c->fc, AV_LOG_ERROR,
1796 "stream %d, error opening alias: path='%s', dir='%s', "
1797 "filename='%s', volume='%s', nlvl_from=%d, nlvl_to=%d\n",
1798 st->index, dref->path, dref->dir, dref->filename,
1799 dref->volume, dref->nlvl_from, dref->nlvl_to);
1803 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1804 if (!st->sample_aspect_ratio.num &&
1805 (st->codec->width != sc->width || st->codec->height != sc->height)) {
1806 st->sample_aspect_ratio = av_d2q(((double)st->codec->height * sc->width) /
1807 ((double)st->codec->width * sc->height), INT_MAX);
1810 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
1811 sc->time_scale*st->nb_frames, st->duration, INT_MAX);
1813 if (sc->stts_count == 1 || (sc->stts_count == 2 && sc->stts_data[1].count == 1))
1814 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den,
1815 sc->time_scale, sc->stts_data[0].duration, INT_MAX);
1818 switch (st->codec->codec_id) {
1819 #if CONFIG_H261_DECODER
1822 #if CONFIG_H263_DECODER
1825 #if CONFIG_H264_DECODER
1828 #if CONFIG_MPEG4_DECODER
1829 case CODEC_ID_MPEG4:
1831 st->codec->width = 0; /* let decoder init width/height */
1832 st->codec->height= 0;
1836 /* Do not need those anymore. */
1837 av_freep(&sc->chunk_offsets);
1838 av_freep(&sc->stsc_data);
1839 av_freep(&sc->sample_sizes);
1840 av_freep(&sc->keyframes);
1841 av_freep(&sc->stts_data);
1842 av_freep(&sc->stps_data);
1847 static int mov_read_ilst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1850 c->itunes_metadata = 1;
1851 ret = mov_read_default(c, pb, atom);
1852 c->itunes_metadata = 0;
1856 static int mov_read_meta(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1858 while (atom.size > 8) {
1859 uint32_t tag = avio_rl32(pb);
1861 if (tag == MKTAG('h','d','l','r')) {
1862 avio_seek(pb, -8, SEEK_CUR);
1864 return mov_read_default(c, pb, atom);
1870 static int mov_read_tkhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1875 int64_t disp_transform[2];
1876 int display_matrix[3][2];
1878 MOVStreamContext *sc;
1881 if (c->fc->nb_streams < 1)
1883 st = c->fc->streams[c->fc->nb_streams-1];
1886 version = avio_r8(pb);
1887 avio_rb24(pb); /* flags */
1889 MOV_TRACK_ENABLED 0x0001
1890 MOV_TRACK_IN_MOVIE 0x0002
1891 MOV_TRACK_IN_PREVIEW 0x0004
1892 MOV_TRACK_IN_POSTER 0x0008
1899 avio_rb32(pb); /* creation time */
1900 avio_rb32(pb); /* modification time */
1902 st->id = (int)avio_rb32(pb); /* track id (NOT 0 !)*/
1903 avio_rb32(pb); /* reserved */
1905 /* highlevel (considering edits) duration in movie timebase */
1906 (version == 1) ? avio_rb64(pb) : avio_rb32(pb);
1907 avio_rb32(pb); /* reserved */
1908 avio_rb32(pb); /* reserved */
1910 avio_rb16(pb); /* layer */
1911 avio_rb16(pb); /* alternate group */
1912 avio_rb16(pb); /* volume */
1913 avio_rb16(pb); /* reserved */
1915 //read in the display matrix (outlined in ISO 14496-12, Section 6.2.2)
1916 // they're kept in fixed point format through all calculations
1917 // ignore u,v,z b/c we don't need the scale factor to calc aspect ratio
1918 for (i = 0; i < 3; i++) {
1919 display_matrix[i][0] = avio_rb32(pb); // 16.16 fixed point
1920 display_matrix[i][1] = avio_rb32(pb); // 16.16 fixed point
1921 avio_rb32(pb); // 2.30 fixed point (not used)
1924 width = avio_rb32(pb); // 16.16 fixed point track width
1925 height = avio_rb32(pb); // 16.16 fixed point track height
1926 sc->width = width >> 16;
1927 sc->height = height >> 16;
1929 // transform the display width/height according to the matrix
1930 // skip this if the display matrix is the default identity matrix
1931 // or if it is rotating the picture, ex iPhone 3GS
1932 // to keep the same scale, use [width height 1<<16]
1933 if (width && height &&
1934 ((display_matrix[0][0] != 65536 ||
1935 display_matrix[1][1] != 65536) &&
1936 !display_matrix[0][1] &&
1937 !display_matrix[1][0] &&
1938 !display_matrix[2][0] && !display_matrix[2][1])) {
1939 for (i = 0; i < 2; i++)
1941 (int64_t) width * display_matrix[0][i] +
1942 (int64_t) height * display_matrix[1][i] +
1943 ((int64_t) display_matrix[2][i] << 16);
1945 //sample aspect ratio is new width/height divided by old width/height
1946 st->sample_aspect_ratio = av_d2q(
1947 ((double) disp_transform[0] * height) /
1948 ((double) disp_transform[1] * width), INT_MAX);
1953 static int mov_read_tfhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1955 MOVFragment *frag = &c->fragment;
1956 MOVTrackExt *trex = NULL;
1957 int flags, track_id, i;
1959 avio_r8(pb); /* version */
1960 flags = avio_rb24(pb);
1962 track_id = avio_rb32(pb);
1965 frag->track_id = track_id;
1966 for (i = 0; i < c->trex_count; i++)
1967 if (c->trex_data[i].track_id == frag->track_id) {
1968 trex = &c->trex_data[i];
1972 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding trex\n");
1976 if (flags & 0x01) frag->base_data_offset = avio_rb64(pb);
1977 else frag->base_data_offset = frag->moof_offset;
1978 if (flags & 0x02) frag->stsd_id = avio_rb32(pb);
1979 else frag->stsd_id = trex->stsd_id;
1981 frag->duration = flags & 0x08 ? avio_rb32(pb) : trex->duration;
1982 frag->size = flags & 0x10 ? avio_rb32(pb) : trex->size;
1983 frag->flags = flags & 0x20 ? avio_rb32(pb) : trex->flags;
1984 av_dlog(c->fc, "frag flags 0x%x\n", frag->flags);
1988 static int mov_read_chap(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1990 c->chapter_track = avio_rb32(pb);
1994 static int mov_read_trex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1998 if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data))
2000 trex = av_realloc(c->trex_data, (c->trex_count+1)*sizeof(*c->trex_data));
2002 return AVERROR(ENOMEM);
2003 c->trex_data = trex;
2004 trex = &c->trex_data[c->trex_count++];
2005 avio_r8(pb); /* version */
2006 avio_rb24(pb); /* flags */
2007 trex->track_id = avio_rb32(pb);
2008 trex->stsd_id = avio_rb32(pb);
2009 trex->duration = avio_rb32(pb);
2010 trex->size = avio_rb32(pb);
2011 trex->flags = avio_rb32(pb);
2015 static int mov_read_trun(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2017 MOVFragment *frag = &c->fragment;
2018 AVStream *st = NULL;
2019 MOVStreamContext *sc;
2023 int data_offset = 0;
2024 unsigned entries, first_sample_flags = frag->flags;
2025 int flags, distance, i;
2027 for (i = 0; i < c->fc->nb_streams; i++) {
2028 if (c->fc->streams[i]->id == frag->track_id) {
2029 st = c->fc->streams[i];
2034 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id);
2038 if (sc->pseudo_stream_id+1 != frag->stsd_id)
2040 avio_r8(pb); /* version */
2041 flags = avio_rb24(pb);
2042 entries = avio_rb32(pb);
2043 av_dlog(c->fc, "flags 0x%x entries %d\n", flags, entries);
2045 /* Always assume the presence of composition time offsets.
2046 * Without this assumption, for instance, we cannot deal with a track in fragmented movies that meet the following.
2047 * 1) in the initial movie, there are no samples.
2048 * 2) in the first movie fragment, there is only one sample without composition time offset.
2049 * 3) in the subsequent movie fragments, there are samples with composition time offset. */
2050 if (!sc->ctts_count && sc->sample_count)
2052 /* Complement ctts table if moov atom doesn't have ctts atom. */
2053 ctts_data = av_malloc(sizeof(*sc->ctts_data));
2055 return AVERROR(ENOMEM);
2056 sc->ctts_data = ctts_data;
2057 sc->ctts_data[sc->ctts_count].count = sc->sample_count;
2058 sc->ctts_data[sc->ctts_count].duration = 0;
2061 if ((uint64_t)entries+sc->ctts_count >= UINT_MAX/sizeof(*sc->ctts_data))
2063 ctts_data = av_realloc(sc->ctts_data,
2064 (entries+sc->ctts_count)*sizeof(*sc->ctts_data));
2066 return AVERROR(ENOMEM);
2067 sc->ctts_data = ctts_data;
2069 if (flags & 0x001) data_offset = avio_rb32(pb);
2070 if (flags & 0x004) first_sample_flags = avio_rb32(pb);
2072 offset = frag->base_data_offset + data_offset;
2074 av_dlog(c->fc, "first sample flags 0x%x\n", first_sample_flags);
2075 for (i = 0; i < entries; i++) {
2076 unsigned sample_size = frag->size;
2077 int sample_flags = i ? frag->flags : first_sample_flags;
2078 unsigned sample_duration = frag->duration;
2081 if (flags & 0x100) sample_duration = avio_rb32(pb);
2082 if (flags & 0x200) sample_size = avio_rb32(pb);
2083 if (flags & 0x400) sample_flags = avio_rb32(pb);
2084 sc->ctts_data[sc->ctts_count].count = 1;
2085 sc->ctts_data[sc->ctts_count].duration = (flags & 0x800) ? avio_rb32(pb) : 0;
2087 if ((keyframe = st->codec->codec_type == AVMEDIA_TYPE_AUDIO ||
2088 (flags & 0x004 && !i && !sample_flags) || sample_flags & 0x2000000))
2090 av_add_index_entry(st, offset, dts, sample_size, distance,
2091 keyframe ? AVINDEX_KEYFRAME : 0);
2092 av_dlog(c->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
2093 "size %d, distance %d, keyframe %d\n", st->index, sc->sample_count+i,
2094 offset, dts, sample_size, distance, keyframe);
2096 dts += sample_duration;
2097 offset += sample_size;
2099 frag->moof_offset = offset;
2104 /* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
2105 /* like the files created with Adobe Premiere 5.0, for samples see */
2106 /* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
2107 static int mov_read_wide(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2112 return 0; /* continue */
2113 if (avio_rb32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
2114 avio_skip(pb, atom.size - 4);
2117 atom.type = avio_rl32(pb);
2119 if (atom.type != MKTAG('m','d','a','t')) {
2120 avio_skip(pb, atom.size);
2123 err = mov_read_mdat(c, pb, atom);
2127 static int mov_read_cmov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2132 uint8_t *moov_data; /* uncompressed data */
2133 long cmov_len, moov_len;
2136 avio_rb32(pb); /* dcom atom */
2137 if (avio_rl32(pb) != MKTAG('d','c','o','m'))
2139 if (avio_rl32(pb) != MKTAG('z','l','i','b')) {
2140 av_log(c->fc, AV_LOG_ERROR, "unknown compression for cmov atom !");
2143 avio_rb32(pb); /* cmvd atom */
2144 if (avio_rl32(pb) != MKTAG('c','m','v','d'))
2146 moov_len = avio_rb32(pb); /* uncompressed size */
2147 cmov_len = atom.size - 6 * 4;
2149 cmov_data = av_malloc(cmov_len);
2151 return AVERROR(ENOMEM);
2152 moov_data = av_malloc(moov_len);
2155 return AVERROR(ENOMEM);
2157 avio_read(pb, cmov_data, cmov_len);
2158 if(uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
2159 goto free_and_return;
2160 if(ffio_init_context(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
2161 goto free_and_return;
2162 atom.type = MKTAG('m','o','o','v');
2163 atom.size = moov_len;
2164 ret = mov_read_default(c, &ctx, atom);
2170 av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
2175 /* edit list atom */
2176 static int mov_read_elst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2178 MOVStreamContext *sc;
2179 int i, edit_count, version;
2181 if (c->fc->nb_streams < 1)
2183 sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
2185 version = avio_r8(pb); /* version */
2186 avio_rb24(pb); /* flags */
2187 edit_count = avio_rb32(pb); /* entries */
2189 if((uint64_t)edit_count*12+8 > atom.size)
2192 for(i=0; i<edit_count; i++){
2196 duration = avio_rb64(pb);
2197 time = avio_rb64(pb);
2199 duration = avio_rb32(pb); /* segment duration */
2200 time = avio_rb32(pb); /* media time */
2202 avio_rb32(pb); /* Media rate */
2203 if (i == 0 && time >= -1) {
2204 sc->time_offset = time != -1 ? time : -duration;
2209 av_log(c->fc, AV_LOG_WARNING, "multiple edit list entries, "
2210 "a/v desync might occur, patch welcome\n");
2212 av_dlog(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, edit_count);
2216 static int mov_read_chan(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2219 return AVERROR_INVALIDDATA;
2221 ff_mov_read_chan(c->fc, atom.size - 4, c->fc->streams[0]->codec);
2225 static const MOVParseTableEntry mov_default_parse_table[] = {
2226 { MKTAG('a','v','s','s'), mov_read_extradata },
2227 { MKTAG('c','h','p','l'), mov_read_chpl },
2228 { MKTAG('c','o','6','4'), mov_read_stco },
2229 { MKTAG('c','t','t','s'), mov_read_ctts }, /* composition time to sample */
2230 { MKTAG('d','i','n','f'), mov_read_default },
2231 { MKTAG('d','r','e','f'), mov_read_dref },
2232 { MKTAG('e','d','t','s'), mov_read_default },
2233 { MKTAG('e','l','s','t'), mov_read_elst },
2234 { MKTAG('e','n','d','a'), mov_read_enda },
2235 { MKTAG('f','i','e','l'), mov_read_extradata },
2236 { MKTAG('f','t','y','p'), mov_read_ftyp },
2237 { MKTAG('g','l','b','l'), mov_read_glbl },
2238 { MKTAG('h','d','l','r'), mov_read_hdlr },
2239 { MKTAG('i','l','s','t'), mov_read_ilst },
2240 { MKTAG('j','p','2','h'), mov_read_extradata },
2241 { MKTAG('m','d','a','t'), mov_read_mdat },
2242 { MKTAG('m','d','h','d'), mov_read_mdhd },
2243 { MKTAG('m','d','i','a'), mov_read_default },
2244 { MKTAG('m','e','t','a'), mov_read_meta },
2245 { MKTAG('m','i','n','f'), mov_read_default },
2246 { MKTAG('m','o','o','f'), mov_read_moof },
2247 { MKTAG('m','o','o','v'), mov_read_moov },
2248 { MKTAG('m','v','e','x'), mov_read_default },
2249 { MKTAG('m','v','h','d'), mov_read_mvhd },
2250 { MKTAG('S','M','I',' '), mov_read_smi }, /* Sorenson extension ??? */
2251 { MKTAG('a','l','a','c'), mov_read_extradata }, /* alac specific atom */
2252 { MKTAG('a','v','c','C'), mov_read_glbl },
2253 { MKTAG('p','a','s','p'), mov_read_pasp },
2254 { MKTAG('s','t','b','l'), mov_read_default },
2255 { MKTAG('s','t','c','o'), mov_read_stco },
2256 { MKTAG('s','t','p','s'), mov_read_stps },
2257 { MKTAG('s','t','r','f'), mov_read_strf },
2258 { MKTAG('s','t','s','c'), mov_read_stsc },
2259 { MKTAG('s','t','s','d'), mov_read_stsd }, /* sample description */
2260 { MKTAG('s','t','s','s'), mov_read_stss }, /* sync sample */
2261 { MKTAG('s','t','s','z'), mov_read_stsz }, /* sample size */
2262 { MKTAG('s','t','t','s'), mov_read_stts },
2263 { MKTAG('s','t','z','2'), mov_read_stsz }, /* compact sample size */
2264 { MKTAG('t','k','h','d'), mov_read_tkhd }, /* track header */
2265 { MKTAG('t','f','h','d'), mov_read_tfhd }, /* track fragment header */
2266 { MKTAG('t','r','a','k'), mov_read_trak },
2267 { MKTAG('t','r','a','f'), mov_read_default },
2268 { MKTAG('t','r','e','f'), mov_read_default },
2269 { MKTAG('c','h','a','p'), mov_read_chap },
2270 { MKTAG('t','r','e','x'), mov_read_trex },
2271 { MKTAG('t','r','u','n'), mov_read_trun },
2272 { MKTAG('u','d','t','a'), mov_read_default },
2273 { MKTAG('w','a','v','e'), mov_read_wave },
2274 { MKTAG('e','s','d','s'), mov_read_esds },
2275 { MKTAG('d','a','c','3'), mov_read_dac3 }, /* AC-3 info */
2276 { MKTAG('w','i','d','e'), mov_read_wide }, /* place holder */
2277 { MKTAG('w','f','e','x'), mov_read_wfex },
2278 { MKTAG('c','m','o','v'), mov_read_cmov },
2279 { MKTAG('c','h','a','n'), mov_read_chan },
2283 static int mov_probe(AVProbeData *p)
2285 unsigned int offset;
2289 /* check file header */
2292 /* ignore invalid offset */
2293 if ((offset + 8) > (unsigned int)p->buf_size)
2295 tag = AV_RL32(p->buf + offset + 4);
2297 /* check for obvious tags */
2298 case MKTAG('j','P',' ',' '): /* jpeg 2000 signature */
2299 case MKTAG('m','o','o','v'):
2300 case MKTAG('m','d','a','t'):
2301 case MKTAG('p','n','o','t'): /* detect movs with preview pics like ew.mov and april.mov */
2302 case MKTAG('u','d','t','a'): /* Packet Video PVAuthor adds this and a lot of more junk */
2303 case MKTAG('f','t','y','p'):
2304 return AVPROBE_SCORE_MAX;
2305 /* those are more common words, so rate then a bit less */
2306 case MKTAG('e','d','i','w'): /* xdcam files have reverted first tags */
2307 case MKTAG('w','i','d','e'):
2308 case MKTAG('f','r','e','e'):
2309 case MKTAG('j','u','n','k'):
2310 case MKTAG('p','i','c','t'):
2311 return AVPROBE_SCORE_MAX - 5;
2312 case MKTAG(0x82,0x82,0x7f,0x7d):
2313 case MKTAG('s','k','i','p'):
2314 case MKTAG('u','u','i','d'):
2315 case MKTAG('p','r','f','l'):
2316 offset = AV_RB32(p->buf+offset) + offset;
2317 /* if we only find those cause probedata is too small at least rate them */
2318 score = AVPROBE_SCORE_MAX - 50;
2321 /* unrecognized tag */
2328 // must be done after parsing all trak because there's no order requirement
2329 static void mov_read_chapters(AVFormatContext *s)
2331 MOVContext *mov = s->priv_data;
2332 AVStream *st = NULL;
2333 MOVStreamContext *sc;
2337 for (i = 0; i < s->nb_streams; i++)
2338 if (s->streams[i]->id == mov->chapter_track) {
2343 av_log(s, AV_LOG_ERROR, "Referenced QT chapter track not found\n");
2347 st->discard = AVDISCARD_ALL;
2349 cur_pos = avio_tell(sc->pb);
2351 for (i = 0; i < st->nb_index_entries; i++) {
2352 AVIndexEntry *sample = &st->index_entries[i];
2353 int64_t end = i+1 < st->nb_index_entries ? st->index_entries[i+1].timestamp : st->duration;
2358 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
2359 av_log(s, AV_LOG_ERROR, "Chapter %d not found in file\n", i);
2363 // the first two bytes are the length of the title
2364 len = avio_rb16(sc->pb);
2365 if (len > sample->size-2)
2367 title_len = 2*len + 1;
2368 if (!(title = av_mallocz(title_len)))
2371 // The samples could theoretically be in any encoding if there's an encd
2372 // atom following, but in practice are only utf-8 or utf-16, distinguished
2373 // instead by the presence of a BOM
2374 ch = avio_rb16(sc->pb);
2376 avio_get_str16be(sc->pb, len, title, title_len);
2377 else if (ch == 0xfffe)
2378 avio_get_str16le(sc->pb, len, title, title_len);
2381 get_strz(sc->pb, title + 2, len - 1);
2384 ff_new_chapter(s, i, st->time_base, sample->timestamp, end, title);
2388 avio_seek(sc->pb, cur_pos, SEEK_SET);
2391 static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
2393 MOVContext *mov = s->priv_data;
2394 AVIOContext *pb = s->pb;
2396 MOVAtom atom = { AV_RL32("root") };
2399 /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
2401 atom.size = avio_size(pb);
2403 atom.size = INT64_MAX;
2405 /* check MOV header */
2406 if ((err = mov_read_default(mov, pb, atom)) < 0) {
2407 av_log(s, AV_LOG_ERROR, "error reading header: %d\n", err);
2410 if (!mov->found_moov) {
2411 av_log(s, AV_LOG_ERROR, "moov atom not found\n");
2414 av_dlog(mov->fc, "on_parse_exit_offset=%"PRId64"\n", avio_tell(pb));
2416 if (pb->seekable && mov->chapter_track > 0)
2417 mov_read_chapters(s);
2422 static AVIndexEntry *mov_find_next_sample(AVFormatContext *s, AVStream **st)
2424 AVIndexEntry *sample = NULL;
2425 int64_t best_dts = INT64_MAX;
2427 for (i = 0; i < s->nb_streams; i++) {
2428 AVStream *avst = s->streams[i];
2429 MOVStreamContext *msc = avst->priv_data;
2430 if (msc->pb && msc->current_sample < avst->nb_index_entries) {
2431 AVIndexEntry *current_sample = &avst->index_entries[msc->current_sample];
2432 int64_t dts = av_rescale(current_sample->timestamp, AV_TIME_BASE, msc->time_scale);
2433 av_dlog(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
2434 if (!sample || (!s->pb->seekable && current_sample->pos < sample->pos) ||
2436 ((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb &&
2437 ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
2438 (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) {
2439 sample = current_sample;
2448 static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
2450 MOVContext *mov = s->priv_data;
2451 MOVStreamContext *sc;
2452 AVIndexEntry *sample;
2453 AVStream *st = NULL;
2456 sample = mov_find_next_sample(s, &st);
2458 mov->found_mdat = 0;
2459 if (s->pb->seekable||
2460 mov_read_default(mov, s->pb, (MOVAtom){ AV_RL32("root"), INT64_MAX }) < 0 ||
2463 av_dlog(s, "read fragments, offset 0x%"PRIx64"\n", avio_tell(s->pb));
2467 /* must be done just before reading, to avoid infinite loop on sample */
2468 sc->current_sample++;
2470 if (st->discard != AVDISCARD_ALL) {
2471 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
2472 av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
2473 sc->ffindex, sample->pos);
2476 ret = av_get_packet(sc->pb, pkt, sample->size);
2479 if (sc->has_palette) {
2482 pal = av_packet_new_side_data(pkt, AV_PKT_DATA_PALETTE, AVPALETTE_SIZE);
2484 av_log(mov->fc, AV_LOG_ERROR, "Cannot append palette to packet\n");
2486 memcpy(pal, sc->palette, AVPALETTE_SIZE);
2487 sc->has_palette = 0;
2490 #if CONFIG_DV_DEMUXER
2491 if (mov->dv_demux && sc->dv_audio_container) {
2492 dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size, pkt->pos);
2495 ret = dv_get_packet(mov->dv_demux, pkt);
2502 pkt->stream_index = sc->ffindex;
2503 pkt->dts = sample->timestamp;
2504 if (sc->ctts_data) {
2505 pkt->pts = pkt->dts + sc->dts_shift + sc->ctts_data[sc->ctts_index].duration;
2506 /* update ctts context */
2508 if (sc->ctts_index < sc->ctts_count &&
2509 sc->ctts_data[sc->ctts_index].count == sc->ctts_sample) {
2511 sc->ctts_sample = 0;
2514 pkt->dts = AV_NOPTS_VALUE;
2516 int64_t next_dts = (sc->current_sample < st->nb_index_entries) ?
2517 st->index_entries[sc->current_sample].timestamp : st->duration;
2518 pkt->duration = next_dts - pkt->dts;
2519 pkt->pts = pkt->dts;
2521 if (st->discard == AVDISCARD_ALL)
2523 pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? AV_PKT_FLAG_KEY : 0;
2524 pkt->pos = sample->pos;
2525 av_dlog(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n",
2526 pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
2530 static int mov_seek_stream(AVFormatContext *s, AVStream *st, int64_t timestamp, int flags)
2532 MOVStreamContext *sc = st->priv_data;
2533 int sample, time_sample;
2536 sample = av_index_search_timestamp(st, timestamp, flags);
2537 av_dlog(s, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
2538 if (sample < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
2540 if (sample < 0) /* not sure what to do */
2542 sc->current_sample = sample;
2543 av_dlog(s, "stream %d, found sample %d\n", st->index, sc->current_sample);
2544 /* adjust ctts index */
2545 if (sc->ctts_data) {
2547 for (i = 0; i < sc->ctts_count; i++) {
2548 int next = time_sample + sc->ctts_data[i].count;
2549 if (next > sc->current_sample) {
2551 sc->ctts_sample = sc->current_sample - time_sample;
2560 static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
2563 int64_t seek_timestamp, timestamp;
2567 if (stream_index >= s->nb_streams)
2569 if (sample_time < 0)
2572 st = s->streams[stream_index];
2573 sample = mov_seek_stream(s, st, sample_time, flags);
2577 /* adjust seek timestamp to found sample timestamp */
2578 seek_timestamp = st->index_entries[sample].timestamp;
2580 for (i = 0; i < s->nb_streams; i++) {
2582 if (stream_index == i)
2585 timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
2586 mov_seek_stream(s, st, timestamp, flags);
2591 static int mov_read_close(AVFormatContext *s)
2593 MOVContext *mov = s->priv_data;
2596 for (i = 0; i < s->nb_streams; i++) {
2597 AVStream *st = s->streams[i];
2598 MOVStreamContext *sc = st->priv_data;
2600 av_freep(&sc->ctts_data);
2601 for (j = 0; j < sc->drefs_count; j++) {
2602 av_freep(&sc->drefs[j].path);
2603 av_freep(&sc->drefs[j].dir);
2605 av_freep(&sc->drefs);
2606 if (sc->pb && sc->pb != s->pb)
2609 av_freep(&st->codec->palctrl);
2612 if (mov->dv_demux) {
2613 for(i = 0; i < mov->dv_fctx->nb_streams; i++) {
2614 av_freep(&mov->dv_fctx->streams[i]->codec);
2615 av_freep(&mov->dv_fctx->streams[i]);
2617 av_freep(&mov->dv_fctx);
2618 av_freep(&mov->dv_demux);
2621 av_freep(&mov->trex_data);
2626 AVInputFormat ff_mov_demuxer = {
2627 "mov,mp4,m4a,3gp,3g2,mj2",
2628 NULL_IF_CONFIG_SMALL("QuickTime/MPEG-4/Motion JPEG 2000 format"),