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/intfloat_readwrite.h"
30 #include "libavutil/mathematics.h"
31 #include "libavutil/avstring.h"
32 #include "libavutil/dict.h"
34 #include "avio_internal.h"
37 #include "libavcodec/get_bits.h"
44 * First version by Francois Revol revol@free.fr
45 * Seek function by Gael Chardon gael.dev@4now.net
47 * Features and limitations:
48 * - reads most of the QT files I have (at least the structure),
49 * Sample QuickTime files with mp3 audio can be found at: http://www.3ivx.com/showcase.html
50 * - the code is quite ugly... maybe I won't do it recursive next time :-)
52 * Funny I didn't know about http://sourceforge.net/projects/qt-ffmpeg/
53 * when coding this :) (it's a writer anyway)
55 * Reference documents:
56 * http://www.geocities.com/xhelmboyx/quicktime/formats/qtm-layout.txt
58 * http://developer.apple.com/documentation/QuickTime/QTFF/
59 * http://developer.apple.com/documentation/QuickTime/QTFF/qtff.pdf
60 * QuickTime is a trademark of Apple (AFAIK :))
63 #include "qtpalette.h"
69 /* XXX: it's the first time I make a recursive parser I think... sorry if it's ugly :P */
71 /* those functions parse an atom */
73 0: continue to parse next atom
74 <0: error occurred, exit
76 /* links atom IDs to parse functions */
77 typedef struct MOVParseTableEntry {
79 int (*parse)(MOVContext *ctx, AVIOContext *pb, MOVAtom atom);
82 static const MOVParseTableEntry mov_default_parse_table[];
84 static int mov_metadata_track_or_disc_number(MOVContext *c, AVIOContext *pb, unsigned len, const char *type)
88 avio_rb16(pb); // unknown
89 snprintf(buf, sizeof(buf), "%d", avio_rb16(pb));
90 av_dict_set(&c->fc->metadata, type, buf, 0);
92 avio_rb16(pb); // total tracks/discs
97 static const uint32_t mac_to_unicode[128] = {
98 0x00C4,0x00C5,0x00C7,0x00C9,0x00D1,0x00D6,0x00DC,0x00E1,
99 0x00E0,0x00E2,0x00E4,0x00E3,0x00E5,0x00E7,0x00E9,0x00E8,
100 0x00EA,0x00EB,0x00ED,0x00EC,0x00EE,0x00EF,0x00F1,0x00F3,
101 0x00F2,0x00F4,0x00F6,0x00F5,0x00FA,0x00F9,0x00FB,0x00FC,
102 0x2020,0x00B0,0x00A2,0x00A3,0x00A7,0x2022,0x00B6,0x00DF,
103 0x00AE,0x00A9,0x2122,0x00B4,0x00A8,0x2260,0x00C6,0x00D8,
104 0x221E,0x00B1,0x2264,0x2265,0x00A5,0x00B5,0x2202,0x2211,
105 0x220F,0x03C0,0x222B,0x00AA,0x00BA,0x03A9,0x00E6,0x00F8,
106 0x00BF,0x00A1,0x00AC,0x221A,0x0192,0x2248,0x2206,0x00AB,
107 0x00BB,0x2026,0x00A0,0x00C0,0x00C3,0x00D5,0x0152,0x0153,
108 0x2013,0x2014,0x201C,0x201D,0x2018,0x2019,0x00F7,0x25CA,
109 0x00FF,0x0178,0x2044,0x20AC,0x2039,0x203A,0xFB01,0xFB02,
110 0x2021,0x00B7,0x201A,0x201E,0x2030,0x00C2,0x00CA,0x00C1,
111 0x00CB,0x00C8,0x00CD,0x00CE,0x00CF,0x00CC,0x00D3,0x00D4,
112 0xF8FF,0x00D2,0x00DA,0x00DB,0x00D9,0x0131,0x02C6,0x02DC,
113 0x00AF,0x02D8,0x02D9,0x02DA,0x00B8,0x02DD,0x02DB,0x02C7,
116 static int mov_read_mac_string(MOVContext *c, AVIOContext *pb, int len,
117 char *dst, int dstlen)
120 char *end = dst+dstlen-1;
123 for (i = 0; i < len; i++) {
124 uint8_t t, c = avio_r8(pb);
125 if (c < 0x80 && p < end)
128 PUT_UTF8(mac_to_unicode[c-0x80], t, if (p < end) *p++ = t;);
134 static int mov_read_udta_string(MOVContext *c, AVIOContext *pb, MOVAtom atom)
136 #ifdef MOV_EXPORT_ALL_METADATA
139 char str[1024], key2[16], language[4] = {0};
140 const char *key = NULL;
141 uint16_t str_size, langcode = 0;
142 uint32_t data_type = 0;
143 int (*parse)(MOVContext*, AVIOContext*, unsigned, const char *) = NULL;
146 case MKTAG(0xa9,'n','a','m'): key = "title"; break;
147 case MKTAG(0xa9,'a','u','t'):
148 case MKTAG(0xa9,'A','R','T'): key = "artist"; break;
149 case MKTAG( 'a','A','R','T'): key = "album_artist";break;
150 case MKTAG(0xa9,'w','r','t'): key = "composer"; break;
151 case MKTAG( 'c','p','r','t'):
152 case MKTAG(0xa9,'c','p','y'): key = "copyright"; break;
153 case MKTAG(0xa9,'g','r','p'): key = "grouping"; break;
154 case MKTAG(0xa9,'l','y','r'): key = "lyrics"; break;
155 case MKTAG(0xa9,'c','m','t'):
156 case MKTAG(0xa9,'i','n','f'): key = "comment"; break;
157 case MKTAG(0xa9,'a','l','b'): key = "album"; break;
158 case MKTAG(0xa9,'d','a','y'): key = "date"; break;
159 case MKTAG(0xa9,'g','e','n'): key = "genre"; break;
160 case MKTAG(0xa9,'t','o','o'):
161 case MKTAG(0xa9,'s','w','r'): key = "encoder"; break;
162 case MKTAG(0xa9,'e','n','c'): key = "encoder"; break;
163 case MKTAG( 'd','e','s','c'): key = "description";break;
164 case MKTAG( 'l','d','e','s'): key = "synopsis"; break;
165 case MKTAG( 't','v','s','h'): key = "show"; break;
166 case MKTAG( 't','v','e','n'): key = "episode_id";break;
167 case MKTAG( 't','v','n','n'): key = "network"; break;
168 case MKTAG( 't','r','k','n'): key = "track";
169 parse = mov_metadata_track_or_disc_number; break;
170 case MKTAG( 'd','i','s','k'): key = "disc";
171 parse = mov_metadata_track_or_disc_number; break;
174 if (c->itunes_metadata && atom.size > 8) {
175 int data_size = avio_rb32(pb);
176 int tag = avio_rl32(pb);
177 if (tag == MKTAG('d','a','t','a')) {
178 data_type = avio_rb32(pb); // type
179 avio_rb32(pb); // unknown
180 str_size = data_size - 16;
183 } else if (atom.size > 4 && key && !c->itunes_metadata) {
184 str_size = avio_rb16(pb); // string length
185 langcode = avio_rb16(pb);
186 ff_mov_lang_to_iso639(langcode, language);
189 str_size = atom.size;
191 #ifdef MOV_EXPORT_ALL_METADATA
193 snprintf(tmp_key, 5, "%.4s", (char*)&atom.type);
203 str_size = FFMIN3(sizeof(str)-1, str_size, atom.size);
206 parse(c, pb, str_size, key);
208 if (data_type == 3 || (data_type == 0 && langcode < 0x800)) { // MAC Encoded
209 mov_read_mac_string(c, pb, str_size, str, sizeof(str));
211 avio_read(pb, str, str_size);
214 av_dict_set(&c->fc->metadata, key, str, 0);
215 if (*language && strcmp(language, "und")) {
216 snprintf(key2, sizeof(key2), "%s-%s", key, language);
217 av_dict_set(&c->fc->metadata, key2, str, 0);
220 av_dlog(c->fc, "lang \"%3s\" ", language);
221 av_dlog(c->fc, "tag \"%s\" value \"%s\" atom \"%.4s\" %d %"PRId64"\n",
222 key, str, (char*)&atom.type, str_size, atom.size);
227 static int mov_read_chpl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
230 int i, nb_chapters, str_len, version;
233 if ((atom.size -= 5) < 0)
236 version = avio_r8(pb);
239 avio_rb32(pb); // ???
240 nb_chapters = avio_r8(pb);
242 for (i = 0; i < nb_chapters; i++) {
246 start = avio_rb64(pb);
247 str_len = avio_r8(pb);
249 if ((atom.size -= 9+str_len) < 0)
252 avio_read(pb, str, str_len);
254 ff_new_chapter(c->fc, i, (AVRational){1,10000000}, start, AV_NOPTS_VALUE, str);
259 static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom)
261 int64_t total_size = 0;
266 atom.size = INT64_MAX;
267 while (total_size + 8 < atom.size && !url_feof(pb)) {
268 int (*parse)(MOVContext*, AVIOContext*, MOVAtom) = NULL;
272 a.size = avio_rb32(pb);
273 a.type = avio_rl32(pb);
275 av_dlog(c->fc, "type: %08x '%.4s' parent:'%.4s' sz: %"PRId64" %"PRId64" %"PRId64"\n",
276 a.type, (char*)&a.type, (char*)&atom.type, a.size, total_size, atom.size);
278 if (a.size == 1) { /* 64 bit extended size */
279 a.size = avio_rb64(pb) - 8;
283 a.size = atom.size - total_size;
290 a.size = FFMIN(a.size, atom.size - total_size);
292 for (i = 0; mov_default_parse_table[i].type; i++)
293 if (mov_default_parse_table[i].type == a.type) {
294 parse = mov_default_parse_table[i].parse;
298 // container is user data
299 if (!parse && (atom.type == MKTAG('u','d','t','a') ||
300 atom.type == MKTAG('i','l','s','t')))
301 parse = mov_read_udta_string;
303 if (!parse) { /* skip leaf atoms data */
304 avio_skip(pb, a.size);
306 int64_t start_pos = avio_tell(pb);
308 int err = parse(c, pb, a);
311 if (c->found_moov && c->found_mdat &&
312 (!pb->seekable || start_pos + a.size == avio_size(pb)))
314 left = a.size - avio_tell(pb) + start_pos;
315 if (left > 0) /* skip garbage at atom end */
319 total_size += a.size;
322 if (total_size < atom.size && atom.size < 0x7ffff)
323 avio_skip(pb, atom.size - total_size);
328 static int mov_read_dref(MOVContext *c, AVIOContext *pb, MOVAtom atom)
331 MOVStreamContext *sc;
334 if (c->fc->nb_streams < 1)
336 st = c->fc->streams[c->fc->nb_streams-1];
339 avio_rb32(pb); // version + flags
340 entries = avio_rb32(pb);
341 if (entries >= UINT_MAX / sizeof(*sc->drefs))
343 sc->drefs = av_mallocz(entries * sizeof(*sc->drefs));
345 return AVERROR(ENOMEM);
346 sc->drefs_count = entries;
348 for (i = 0; i < sc->drefs_count; i++) {
349 MOVDref *dref = &sc->drefs[i];
350 uint32_t size = avio_rb32(pb);
351 int64_t next = avio_tell(pb) + size - 4;
356 dref->type = avio_rl32(pb);
357 avio_rb32(pb); // version + flags
358 av_dlog(c->fc, "type %.4s size %d\n", (char*)&dref->type, size);
360 if (dref->type == MKTAG('a','l','i','s') && size > 150) {
361 /* macintosh alias record */
362 uint16_t volume_len, len;
367 volume_len = avio_r8(pb);
368 volume_len = FFMIN(volume_len, 27);
369 avio_read(pb, dref->volume, 27);
370 dref->volume[volume_len] = 0;
371 av_log(c->fc, AV_LOG_DEBUG, "volume %s, len %d\n", dref->volume, volume_len);
376 len = FFMIN(len, 63);
377 avio_read(pb, dref->filename, 63);
378 dref->filename[len] = 0;
379 av_log(c->fc, AV_LOG_DEBUG, "filename %s, len %d\n", dref->filename, len);
383 /* read next level up_from_alias/down_to_target */
384 dref->nlvl_from = avio_rb16(pb);
385 dref->nlvl_to = avio_rb16(pb);
386 av_log(c->fc, AV_LOG_DEBUG, "nlvl from %d, nlvl to %d\n",
387 dref->nlvl_from, dref->nlvl_to);
391 for (type = 0; type != -1 && avio_tell(pb) < next; ) {
392 type = avio_rb16(pb);
394 av_log(c->fc, AV_LOG_DEBUG, "type %d, len %d\n", type, len);
397 if (type == 2) { // absolute path
399 dref->path = av_mallocz(len+1);
401 return AVERROR(ENOMEM);
402 avio_read(pb, dref->path, len);
403 if (len > volume_len && !strncmp(dref->path, dref->volume, volume_len)) {
405 memmove(dref->path, dref->path+volume_len, len);
408 for (j = 0; j < len; j++)
409 if (dref->path[j] == ':')
411 av_log(c->fc, AV_LOG_DEBUG, "path %s\n", dref->path);
412 } else if (type == 0) { // directory name
414 dref->dir = av_malloc(len+1);
416 return AVERROR(ENOMEM);
417 avio_read(pb, dref->dir, len);
419 for (j = 0; j < len; j++)
420 if (dref->dir[j] == ':')
422 av_log(c->fc, AV_LOG_DEBUG, "dir %s\n", dref->dir);
427 avio_seek(pb, next, SEEK_SET);
432 static int mov_read_hdlr(MOVContext *c, AVIOContext *pb, MOVAtom atom)
436 uint32_t av_unused ctype;
438 if (c->fc->nb_streams < 1) // meta before first trak
441 st = c->fc->streams[c->fc->nb_streams-1];
443 avio_r8(pb); /* version */
444 avio_rb24(pb); /* flags */
447 ctype = avio_rl32(pb);
448 type = avio_rl32(pb); /* component subtype */
450 av_dlog(c->fc, "ctype= %.4s (0x%08x)\n", (char*)&ctype, ctype);
451 av_dlog(c->fc, "stype= %.4s\n", (char*)&type);
453 if (type == MKTAG('v','i','d','e'))
454 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
455 else if(type == MKTAG('s','o','u','n'))
456 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
457 else if(type == MKTAG('m','1','a',' '))
458 st->codec->codec_id = CODEC_ID_MP2;
459 else if((type == MKTAG('s','u','b','p')) || (type == MKTAG('c','l','c','p')))
460 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
462 avio_rb32(pb); /* component manufacture */
463 avio_rb32(pb); /* component flags */
464 avio_rb32(pb); /* component flags mask */
469 int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb, MOVAtom atom)
474 if (fc->nb_streams < 1)
476 st = fc->streams[fc->nb_streams-1];
478 avio_rb32(pb); /* version + flags */
479 ff_mp4_read_descr(fc, pb, &tag);
480 if (tag == MP4ESDescrTag) {
481 avio_rb16(pb); /* ID */
482 avio_r8(pb); /* priority */
484 avio_rb16(pb); /* ID */
486 ff_mp4_read_descr(fc, pb, &tag);
487 if (tag == MP4DecConfigDescrTag)
488 ff_mp4_read_dec_config_descr(fc, st, pb);
492 static int mov_read_esds(MOVContext *c, AVIOContext *pb, MOVAtom atom)
494 return ff_mov_read_esds(c->fc, pb, atom);
497 static int mov_read_dac3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
500 int ac3info, acmod, lfeon, bsmod;
502 if (c->fc->nb_streams < 1)
504 st = c->fc->streams[c->fc->nb_streams-1];
506 ac3info = avio_rb24(pb);
507 bsmod = (ac3info >> 14) & 0x7;
508 acmod = (ac3info >> 11) & 0x7;
509 lfeon = (ac3info >> 10) & 0x1;
510 st->codec->channels = ((int[]){2,1,2,3,3,4,4,5})[acmod] + lfeon;
511 st->codec->audio_service_type = bsmod;
512 if (st->codec->channels > 1 && bsmod == 0x7)
513 st->codec->audio_service_type = AV_AUDIO_SERVICE_TYPE_KARAOKE;
518 static int mov_read_wfex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
522 if (c->fc->nb_streams < 1)
524 st = c->fc->streams[c->fc->nb_streams-1];
526 ff_get_wav_header(pb, st->codec, atom.size);
531 static int mov_read_pasp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
533 const int num = avio_rb32(pb);
534 const int den = avio_rb32(pb);
537 if (c->fc->nb_streams < 1)
539 st = c->fc->streams[c->fc->nb_streams-1];
541 if ((st->sample_aspect_ratio.den != 1 || st->sample_aspect_ratio.num) && // default
542 (den != st->sample_aspect_ratio.den || num != st->sample_aspect_ratio.num)) {
543 av_log(c->fc, AV_LOG_WARNING,
544 "sample aspect ratio already set to %d:%d, ignoring 'pasp' atom (%d:%d)\n",
545 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
547 } else if (den != 0) {
548 st->sample_aspect_ratio.num = num;
549 st->sample_aspect_ratio.den = den;
554 /* this atom contains actual media data */
555 static int mov_read_mdat(MOVContext *c, AVIOContext *pb, MOVAtom atom)
557 if(atom.size == 0) /* wrong one (MP4) */
560 return 0; /* now go for moov */
563 /* read major brand, minor version and compatible brands and store them as metadata */
564 static int mov_read_ftyp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
568 char minor_ver_str[11]; /* 32 bit integer -> 10 digits + null */
569 char* comp_brands_str;
570 uint8_t type[5] = {0};
572 avio_read(pb, type, 4);
573 if (strcmp(type, "qt "))
575 av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
576 av_dict_set(&c->fc->metadata, "major_brand", type, 0);
577 minor_ver = avio_rb32(pb); /* minor version */
578 snprintf(minor_ver_str, sizeof(minor_ver_str), "%d", minor_ver);
579 av_dict_set(&c->fc->metadata, "minor_version", minor_ver_str, 0);
581 comp_brand_size = atom.size - 8;
582 if (comp_brand_size < 0)
584 comp_brands_str = av_malloc(comp_brand_size + 1); /* Add null terminator */
585 if (!comp_brands_str)
586 return AVERROR(ENOMEM);
587 avio_read(pb, comp_brands_str, comp_brand_size);
588 comp_brands_str[comp_brand_size] = 0;
589 av_dict_set(&c->fc->metadata, "compatible_brands", comp_brands_str, 0);
590 av_freep(&comp_brands_str);
595 /* this atom should contain all header atoms */
596 static int mov_read_moov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
598 if (mov_read_default(c, pb, atom) < 0)
600 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
601 /* so we don't parse the whole file if over a network */
603 return 0; /* now go for mdat */
606 static int mov_read_moof(MOVContext *c, AVIOContext *pb, MOVAtom atom)
608 c->fragment.moof_offset = avio_tell(pb) - 8;
609 av_dlog(c->fc, "moof offset %"PRIx64"\n", c->fragment.moof_offset);
610 return mov_read_default(c, pb, atom);
613 static void mov_metadata_creation_time(AVDictionary **metadata, time_t time)
618 time -= 2082844800; /* seconds between 1904-01-01 and Epoch */
621 strftime(buffer, sizeof(buffer), "%Y-%m-%d %H:%M:%S", ptm);
622 av_dict_set(metadata, "creation_time", buffer, 0);
626 static int mov_read_mdhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
629 MOVStreamContext *sc;
631 char language[4] = {0};
633 time_t creation_time;
635 if (c->fc->nb_streams < 1)
637 st = c->fc->streams[c->fc->nb_streams-1];
640 version = avio_r8(pb);
642 return -1; /* unsupported */
644 avio_rb24(pb); /* flags */
646 creation_time = avio_rb64(pb);
649 creation_time = avio_rb32(pb);
650 avio_rb32(pb); /* modification time */
652 mov_metadata_creation_time(&st->metadata, creation_time);
654 sc->time_scale = avio_rb32(pb);
655 st->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
657 lang = avio_rb16(pb); /* language */
658 if (ff_mov_lang_to_iso639(lang, language))
659 av_dict_set(&st->metadata, "language", language, 0);
660 avio_rb16(pb); /* quality */
665 static int mov_read_mvhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
667 time_t creation_time;
668 int version = avio_r8(pb); /* version */
669 avio_rb24(pb); /* flags */
672 creation_time = avio_rb64(pb);
675 creation_time = avio_rb32(pb);
676 avio_rb32(pb); /* modification time */
678 mov_metadata_creation_time(&c->fc->metadata, creation_time);
679 c->time_scale = avio_rb32(pb); /* time scale */
681 av_dlog(c->fc, "time scale = %i\n", c->time_scale);
683 c->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
684 avio_rb32(pb); /* preferred scale */
686 avio_rb16(pb); /* preferred volume */
688 avio_skip(pb, 10); /* reserved */
690 avio_skip(pb, 36); /* display matrix */
692 avio_rb32(pb); /* preview time */
693 avio_rb32(pb); /* preview duration */
694 avio_rb32(pb); /* poster time */
695 avio_rb32(pb); /* selection time */
696 avio_rb32(pb); /* selection duration */
697 avio_rb32(pb); /* current time */
698 avio_rb32(pb); /* next track ID */
703 static int mov_read_smi(MOVContext *c, AVIOContext *pb, MOVAtom atom)
707 if (c->fc->nb_streams < 1)
709 st = c->fc->streams[c->fc->nb_streams-1];
711 if((uint64_t)atom.size > (1<<30))
714 // currently SVQ3 decoder expect full STSD header - so let's fake it
715 // this should be fixed and just SMI header should be passed
716 av_free(st->codec->extradata);
717 st->codec->extradata = av_mallocz(atom.size + 0x5a + FF_INPUT_BUFFER_PADDING_SIZE);
718 if (!st->codec->extradata)
719 return AVERROR(ENOMEM);
720 st->codec->extradata_size = 0x5a + atom.size;
721 memcpy(st->codec->extradata, "SVQ3", 4); // fake
722 avio_read(pb, st->codec->extradata + 0x5a, atom.size);
723 av_dlog(c->fc, "Reading SMI %"PRId64" %s\n", atom.size, st->codec->extradata + 0x5a);
727 static int mov_read_enda(MOVContext *c, AVIOContext *pb, MOVAtom atom)
732 if (c->fc->nb_streams < 1)
734 st = c->fc->streams[c->fc->nb_streams-1];
736 little_endian = avio_rb16(pb) & 0xFF;
737 av_dlog(c->fc, "enda %d\n", little_endian);
738 if (little_endian == 1) {
739 switch (st->codec->codec_id) {
740 case CODEC_ID_PCM_S24BE:
741 st->codec->codec_id = CODEC_ID_PCM_S24LE;
743 case CODEC_ID_PCM_S32BE:
744 st->codec->codec_id = CODEC_ID_PCM_S32LE;
746 case CODEC_ID_PCM_F32BE:
747 st->codec->codec_id = CODEC_ID_PCM_F32LE;
749 case CODEC_ID_PCM_F64BE:
750 st->codec->codec_id = CODEC_ID_PCM_F64LE;
759 /* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
760 static int mov_read_extradata(MOVContext *c, AVIOContext *pb, MOVAtom atom)
766 if (c->fc->nb_streams < 1) // will happen with jp2 files
768 st= c->fc->streams[c->fc->nb_streams-1];
769 size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
770 if(size > INT_MAX || (uint64_t)atom.size > INT_MAX)
772 buf= av_realloc(st->codec->extradata, size);
775 st->codec->extradata= buf;
776 buf+= st->codec->extradata_size;
777 st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE;
778 AV_WB32( buf , atom.size + 8);
779 AV_WL32( buf + 4, atom.type);
780 avio_read(pb, buf + 8, atom.size);
784 static int mov_read_wave(MOVContext *c, AVIOContext *pb, MOVAtom atom)
788 if (c->fc->nb_streams < 1)
790 st = c->fc->streams[c->fc->nb_streams-1];
792 if((uint64_t)atom.size > (1<<30))
795 if (st->codec->codec_id == CODEC_ID_QDM2 || st->codec->codec_id == CODEC_ID_QDMC) {
796 // pass all frma atom to codec, needed at least for QDMC and QDM2
797 av_free(st->codec->extradata);
798 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
799 if (!st->codec->extradata)
800 return AVERROR(ENOMEM);
801 st->codec->extradata_size = atom.size;
802 avio_read(pb, st->codec->extradata, atom.size);
803 } else if (atom.size > 8) { /* to read frma, esds atoms */
804 if (mov_read_default(c, pb, atom) < 0)
807 avio_skip(pb, atom.size);
812 * This function reads atom content and puts data in extradata without tag
813 * nor size unlike mov_read_extradata.
815 static int mov_read_glbl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
819 if (c->fc->nb_streams < 1)
821 st = c->fc->streams[c->fc->nb_streams-1];
823 if((uint64_t)atom.size > (1<<30))
826 av_free(st->codec->extradata);
827 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
828 if (!st->codec->extradata)
829 return AVERROR(ENOMEM);
830 st->codec->extradata_size = atom.size;
831 avio_read(pb, st->codec->extradata, atom.size);
836 * An strf atom is a BITMAPINFOHEADER struct. This struct is 40 bytes itself,
837 * but can have extradata appended at the end after the 40 bytes belonging
840 static int mov_read_strf(MOVContext *c, AVIOContext *pb, MOVAtom atom)
844 if (c->fc->nb_streams < 1)
848 st = c->fc->streams[c->fc->nb_streams-1];
850 if((uint64_t)atom.size > (1<<30))
853 av_free(st->codec->extradata);
854 st->codec->extradata = av_mallocz(atom.size - 40 + FF_INPUT_BUFFER_PADDING_SIZE);
855 if (!st->codec->extradata)
856 return AVERROR(ENOMEM);
857 st->codec->extradata_size = atom.size - 40;
859 avio_read(pb, st->codec->extradata, atom.size - 40);
863 static int mov_read_stco(MOVContext *c, AVIOContext *pb, MOVAtom atom)
866 MOVStreamContext *sc;
867 unsigned int i, entries;
869 if (c->fc->nb_streams < 1)
871 st = c->fc->streams[c->fc->nb_streams-1];
874 avio_r8(pb); /* version */
875 avio_rb24(pb); /* flags */
877 entries = avio_rb32(pb);
879 if(entries >= UINT_MAX/sizeof(int64_t))
882 sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
883 if (!sc->chunk_offsets)
884 return AVERROR(ENOMEM);
885 sc->chunk_count = entries;
887 if (atom.type == MKTAG('s','t','c','o'))
888 for(i=0; i<entries; i++)
889 sc->chunk_offsets[i] = avio_rb32(pb);
890 else if (atom.type == MKTAG('c','o','6','4'))
891 for(i=0; i<entries; i++)
892 sc->chunk_offsets[i] = avio_rb64(pb);
900 * Compute codec id for 'lpcm' tag.
901 * See CoreAudioTypes and AudioStreamBasicDescription at Apple.
903 enum CodecID ff_mov_get_lpcm_codec_id(int bps, int flags)
905 if (flags & 1) { // floating point
906 if (flags & 2) { // big endian
907 if (bps == 32) return CODEC_ID_PCM_F32BE;
908 else if (bps == 64) return CODEC_ID_PCM_F64BE;
910 if (bps == 32) return CODEC_ID_PCM_F32LE;
911 else if (bps == 64) return CODEC_ID_PCM_F64LE;
917 if (flags & 4) return CODEC_ID_PCM_S8;
918 else return CODEC_ID_PCM_U8;
919 else if (bps == 16) return CODEC_ID_PCM_S16BE;
920 else if (bps == 24) return CODEC_ID_PCM_S24BE;
921 else if (bps == 32) return CODEC_ID_PCM_S32BE;
924 if (flags & 4) return CODEC_ID_PCM_S8;
925 else return CODEC_ID_PCM_U8;
926 else if (bps == 16) return CODEC_ID_PCM_S16LE;
927 else if (bps == 24) return CODEC_ID_PCM_S24LE;
928 else if (bps == 32) return CODEC_ID_PCM_S32LE;
931 return CODEC_ID_NONE;
934 int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries)
937 MOVStreamContext *sc;
938 int j, pseudo_stream_id;
940 if (c->fc->nb_streams < 1)
942 st = c->fc->streams[c->fc->nb_streams-1];
945 for(pseudo_stream_id=0; pseudo_stream_id<entries; pseudo_stream_id++) {
946 //Parsing Sample description table
949 MOVAtom a = { AV_RL32("stsd") };
950 int64_t start_pos = avio_tell(pb);
951 int size = avio_rb32(pb); /* size */
952 uint32_t format = avio_rl32(pb); /* data format */
955 avio_rb32(pb); /* reserved */
956 avio_rb16(pb); /* reserved */
957 dref_id = avio_rb16(pb);
960 if (st->codec->codec_tag &&
961 st->codec->codec_tag != format &&
962 (c->fc->video_codec_id ? ff_codec_get_id(codec_movvideo_tags, format) != c->fc->video_codec_id
963 : st->codec->codec_tag != MKTAG('j','p','e','g'))
965 /* Multiple fourcc, we skip JPEG. This is not correct, we should
966 * export it as a separate AVStream but this needs a few changes
967 * in the MOV demuxer, patch welcome. */
969 av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n");
970 avio_skip(pb, size - (avio_tell(pb) - start_pos));
973 /* we cannot demux concatenated h264 streams because of different extradata */
974 if (st->codec->codec_tag && st->codec->codec_tag == AV_RL32("avc1"))
976 sc->pseudo_stream_id = st->codec->codec_tag ? -1 : pseudo_stream_id;
977 sc->dref_id= dref_id;
979 st->codec->codec_tag = format;
980 id = ff_codec_get_id(codec_movaudio_tags, format);
981 if (id<=0 && ((format&0xFFFF) == 'm'+('s'<<8) || (format&0xFFFF) == 'T'+('S'<<8)))
982 id = ff_codec_get_id(ff_codec_wav_tags, av_bswap32(format)&0xFFFF);
984 if (st->codec->codec_type != AVMEDIA_TYPE_VIDEO && id > 0) {
985 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
986 } else if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO && /* do not overwrite codec type */
987 format && format != MKTAG('m','p','4','s')) { /* skip old asf mpeg4 tag */
988 id = ff_codec_get_id(codec_movvideo_tags, format);
990 id = ff_codec_get_id(ff_codec_bmp_tags, format);
992 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
993 else if(st->codec->codec_type == AVMEDIA_TYPE_DATA){
994 id = ff_codec_get_id(ff_codec_movsubtitle_tags, format);
996 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
1000 av_dlog(c->fc, "size=%d 4CC= %c%c%c%c codec_type=%d\n", size,
1001 (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff,
1002 (format >> 24) & 0xff, st->codec->codec_type);
1004 if(st->codec->codec_type==AVMEDIA_TYPE_VIDEO) {
1005 unsigned int color_depth, len;
1006 int color_greyscale;
1008 st->codec->codec_id = id;
1009 avio_rb16(pb); /* version */
1010 avio_rb16(pb); /* revision level */
1011 avio_rb32(pb); /* vendor */
1012 avio_rb32(pb); /* temporal quality */
1013 avio_rb32(pb); /* spatial quality */
1015 st->codec->width = avio_rb16(pb); /* width */
1016 st->codec->height = avio_rb16(pb); /* height */
1018 avio_rb32(pb); /* horiz resolution */
1019 avio_rb32(pb); /* vert resolution */
1020 avio_rb32(pb); /* data size, always 0 */
1021 avio_rb16(pb); /* frames per samples */
1023 len = avio_r8(pb); /* codec name, pascal string */
1026 mov_read_mac_string(c, pb, len, st->codec->codec_name, 32);
1028 avio_skip(pb, 31 - len);
1029 /* codec_tag YV12 triggers an UV swap in rawdec.c */
1030 if (!memcmp(st->codec->codec_name, "Planar Y'CbCr 8-bit 4:2:0", 25))
1031 st->codec->codec_tag=MKTAG('I', '4', '2', '0');
1033 st->codec->bits_per_coded_sample = avio_rb16(pb); /* depth */
1034 st->codec->color_table_id = avio_rb16(pb); /* colortable id */
1035 av_dlog(c->fc, "depth %d, ctab id %d\n",
1036 st->codec->bits_per_coded_sample, st->codec->color_table_id);
1037 /* figure out the palette situation */
1038 color_depth = st->codec->bits_per_coded_sample & 0x1F;
1039 color_greyscale = st->codec->bits_per_coded_sample & 0x20;
1041 /* if the depth is 2, 4, or 8 bpp, file is palettized */
1042 if ((color_depth == 2) || (color_depth == 4) ||
1043 (color_depth == 8)) {
1044 /* for palette traversal */
1045 unsigned int color_start, color_count, color_end;
1046 unsigned char r, g, b;
1048 if (color_greyscale) {
1049 int color_index, color_dec;
1050 /* compute the greyscale palette */
1051 st->codec->bits_per_coded_sample = color_depth;
1052 color_count = 1 << color_depth;
1054 color_dec = 256 / (color_count - 1);
1055 for (j = 0; j < color_count; j++) {
1056 r = g = b = color_index;
1058 (r << 16) | (g << 8) | (b);
1059 color_index -= color_dec;
1060 if (color_index < 0)
1063 } else if (st->codec->color_table_id) {
1064 const uint8_t *color_table;
1065 /* if flag bit 3 is set, use the default palette */
1066 color_count = 1 << color_depth;
1067 if (color_depth == 2)
1068 color_table = ff_qt_default_palette_4;
1069 else if (color_depth == 4)
1070 color_table = ff_qt_default_palette_16;
1072 color_table = ff_qt_default_palette_256;
1074 for (j = 0; j < color_count; j++) {
1075 r = color_table[j * 3 + 0];
1076 g = color_table[j * 3 + 1];
1077 b = color_table[j * 3 + 2];
1079 (r << 16) | (g << 8) | (b);
1082 /* load the palette from the file */
1083 color_start = avio_rb32(pb);
1084 color_count = avio_rb16(pb);
1085 color_end = avio_rb16(pb);
1086 if ((color_start <= 255) &&
1087 (color_end <= 255)) {
1088 for (j = color_start; j <= color_end; j++) {
1089 /* each R, G, or B component is 16 bits;
1090 * only use the top 8 bits; skip alpha bytes
1101 (r << 16) | (g << 8) | (b);
1105 sc->has_palette = 1;
1107 } else if(st->codec->codec_type==AVMEDIA_TYPE_AUDIO) {
1108 int bits_per_sample, flags;
1109 uint16_t version = avio_rb16(pb);
1111 st->codec->codec_id = id;
1112 avio_rb16(pb); /* revision level */
1113 avio_rb32(pb); /* vendor */
1115 st->codec->channels = avio_rb16(pb); /* channel count */
1116 av_dlog(c->fc, "audio channels %d\n", st->codec->channels);
1117 st->codec->bits_per_coded_sample = avio_rb16(pb); /* sample size */
1119 sc->audio_cid = avio_rb16(pb);
1120 avio_rb16(pb); /* packet size = 0 */
1122 st->codec->sample_rate = ((avio_rb32(pb) >> 16));
1124 //Read QT version 1 fields. In version 0 these do not exist.
1125 av_dlog(c->fc, "version =%d, isom =%d\n",version,c->isom);
1128 sc->samples_per_frame = avio_rb32(pb);
1129 avio_rb32(pb); /* bytes per packet */
1130 sc->bytes_per_frame = avio_rb32(pb);
1131 avio_rb32(pb); /* bytes per sample */
1132 } else if(version==2) {
1133 avio_rb32(pb); /* sizeof struct only */
1134 st->codec->sample_rate = av_int2dbl(avio_rb64(pb)); /* float 64 */
1135 st->codec->channels = avio_rb32(pb);
1136 avio_rb32(pb); /* always 0x7F000000 */
1137 st->codec->bits_per_coded_sample = avio_rb32(pb); /* bits per channel if sound is uncompressed */
1138 flags = avio_rb32(pb); /* lpcm format specific flag */
1139 sc->bytes_per_frame = avio_rb32(pb); /* bytes per audio packet if constant */
1140 sc->samples_per_frame = avio_rb32(pb); /* lpcm frames per audio packet if constant */
1141 if (format == MKTAG('l','p','c','m'))
1142 st->codec->codec_id = ff_mov_get_lpcm_codec_id(st->codec->bits_per_coded_sample, flags);
1146 switch (st->codec->codec_id) {
1147 case CODEC_ID_PCM_S8:
1148 case CODEC_ID_PCM_U8:
1149 if (st->codec->bits_per_coded_sample == 16)
1150 st->codec->codec_id = CODEC_ID_PCM_S16BE;
1152 case CODEC_ID_PCM_S16LE:
1153 case CODEC_ID_PCM_S16BE:
1154 if (st->codec->bits_per_coded_sample == 8)
1155 st->codec->codec_id = CODEC_ID_PCM_S8;
1156 else if (st->codec->bits_per_coded_sample == 24)
1157 st->codec->codec_id =
1158 st->codec->codec_id == CODEC_ID_PCM_S16BE ?
1159 CODEC_ID_PCM_S24BE : CODEC_ID_PCM_S24LE;
1161 /* set values for old format before stsd version 1 appeared */
1162 case CODEC_ID_MACE3:
1163 sc->samples_per_frame = 6;
1164 sc->bytes_per_frame = 2*st->codec->channels;
1166 case CODEC_ID_MACE6:
1167 sc->samples_per_frame = 6;
1168 sc->bytes_per_frame = 1*st->codec->channels;
1170 case CODEC_ID_ADPCM_IMA_QT:
1171 sc->samples_per_frame = 64;
1172 sc->bytes_per_frame = 34*st->codec->channels;
1175 sc->samples_per_frame = 160;
1176 sc->bytes_per_frame = 33;
1182 bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
1183 if (bits_per_sample) {
1184 st->codec->bits_per_coded_sample = bits_per_sample;
1185 sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
1187 } else if(st->codec->codec_type==AVMEDIA_TYPE_SUBTITLE){
1188 // ttxt stsd contains display flags, justification, background
1189 // color, fonts, and default styles, so fake an atom to read it
1190 MOVAtom fake_atom = { .size = size - (avio_tell(pb) - start_pos) };
1191 if (format != AV_RL32("mp4s")) // mp4s contains a regular esds atom
1192 mov_read_glbl(c, pb, fake_atom);
1193 st->codec->codec_id= id;
1194 st->codec->width = sc->width;
1195 st->codec->height = sc->height;
1197 /* other codec type, just skip (rtp, mp4s, tmcd ...) */
1198 avio_skip(pb, size - (avio_tell(pb) - start_pos));
1200 /* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */
1201 a.size = size - (avio_tell(pb) - start_pos);
1203 if (mov_read_default(c, pb, a) < 0)
1205 } else if (a.size > 0)
1206 avio_skip(pb, a.size);
1209 if(st->codec->codec_type==AVMEDIA_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1)
1210 st->codec->sample_rate= sc->time_scale;
1212 /* special codec parameters handling */
1213 switch (st->codec->codec_id) {
1214 #if CONFIG_DV_DEMUXER
1215 case CODEC_ID_DVAUDIO:
1216 c->dv_fctx = avformat_alloc_context();
1217 c->dv_demux = dv_init_demux(c->dv_fctx);
1219 av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
1222 sc->dv_audio_container = 1;
1223 st->codec->codec_id = CODEC_ID_PCM_S16LE;
1226 /* no ifdef since parameters are always those */
1227 case CODEC_ID_QCELP:
1228 // force sample rate for qcelp when not stored in mov
1229 if (st->codec->codec_tag != MKTAG('Q','c','l','p'))
1230 st->codec->sample_rate = 8000;
1231 st->codec->frame_size= 160;
1232 st->codec->channels= 1; /* really needed */
1234 case CODEC_ID_AMR_NB:
1235 case CODEC_ID_AMR_WB:
1236 st->codec->frame_size= sc->samples_per_frame;
1237 st->codec->channels= 1; /* really needed */
1238 /* force sample rate for amr, stsd in 3gp does not store sample rate */
1239 if (st->codec->codec_id == CODEC_ID_AMR_NB)
1240 st->codec->sample_rate = 8000;
1241 else if (st->codec->codec_id == CODEC_ID_AMR_WB)
1242 st->codec->sample_rate = 16000;
1246 st->codec->codec_type = AVMEDIA_TYPE_AUDIO; /* force type after stsd for m1a hdlr */
1247 st->need_parsing = AVSTREAM_PARSE_FULL;
1250 case CODEC_ID_ADPCM_MS:
1251 case CODEC_ID_ADPCM_IMA_WAV:
1252 st->codec->frame_size = sc->samples_per_frame;
1253 st->codec->block_align = sc->bytes_per_frame;
1256 if (st->codec->extradata_size == 36) {
1257 st->codec->frame_size = AV_RB32(st->codec->extradata+12);
1258 st->codec->channels = AV_RB8 (st->codec->extradata+21);
1259 st->codec->sample_rate = AV_RB32(st->codec->extradata+32);
1269 static int mov_read_stsd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1273 avio_r8(pb); /* version */
1274 avio_rb24(pb); /* flags */
1275 entries = avio_rb32(pb);
1277 return ff_mov_read_stsd_entries(c, pb, entries);
1280 static int mov_read_stsc(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1283 MOVStreamContext *sc;
1284 unsigned int i, entries;
1286 if (c->fc->nb_streams < 1)
1288 st = c->fc->streams[c->fc->nb_streams-1];
1291 avio_r8(pb); /* version */
1292 avio_rb24(pb); /* flags */
1294 entries = avio_rb32(pb);
1296 av_dlog(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
1298 if(entries >= UINT_MAX / sizeof(*sc->stsc_data))
1300 sc->stsc_data = av_malloc(entries * sizeof(*sc->stsc_data));
1302 return AVERROR(ENOMEM);
1303 sc->stsc_count = entries;
1305 for(i=0; i<entries; i++) {
1306 sc->stsc_data[i].first = avio_rb32(pb);
1307 sc->stsc_data[i].count = avio_rb32(pb);
1308 sc->stsc_data[i].id = avio_rb32(pb);
1313 static int mov_read_stps(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1316 MOVStreamContext *sc;
1317 unsigned i, entries;
1319 if (c->fc->nb_streams < 1)
1321 st = c->fc->streams[c->fc->nb_streams-1];
1324 avio_rb32(pb); // version + flags
1326 entries = avio_rb32(pb);
1327 if (entries >= UINT_MAX / sizeof(*sc->stps_data))
1329 sc->stps_data = av_malloc(entries * sizeof(*sc->stps_data));
1331 return AVERROR(ENOMEM);
1332 sc->stps_count = entries;
1334 for (i = 0; i < entries; i++) {
1335 sc->stps_data[i] = avio_rb32(pb);
1336 //av_dlog(c->fc, "stps %d\n", sc->stps_data[i]);
1342 static int mov_read_stss(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1345 MOVStreamContext *sc;
1346 unsigned int i, entries;
1348 if (c->fc->nb_streams < 1)
1350 st = c->fc->streams[c->fc->nb_streams-1];
1353 avio_r8(pb); /* version */
1354 avio_rb24(pb); /* flags */
1356 entries = avio_rb32(pb);
1358 av_dlog(c->fc, "keyframe_count = %d\n", entries);
1360 if(entries >= UINT_MAX / sizeof(int))
1362 sc->keyframes = av_malloc(entries * sizeof(int));
1364 return AVERROR(ENOMEM);
1365 sc->keyframe_count = entries;
1367 for(i=0; i<entries; i++) {
1368 sc->keyframes[i] = avio_rb32(pb);
1369 //av_dlog(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
1374 static int mov_read_stsz(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1377 MOVStreamContext *sc;
1378 unsigned int i, entries, sample_size, field_size, num_bytes;
1382 if (c->fc->nb_streams < 1)
1384 st = c->fc->streams[c->fc->nb_streams-1];
1387 avio_r8(pb); /* version */
1388 avio_rb24(pb); /* flags */
1390 if (atom.type == MKTAG('s','t','s','z')) {
1391 sample_size = avio_rb32(pb);
1392 if (!sc->sample_size) /* do not overwrite value computed in stsd */
1393 sc->sample_size = sample_size;
1397 avio_rb24(pb); /* reserved */
1398 field_size = avio_r8(pb);
1400 entries = avio_rb32(pb);
1402 av_dlog(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, entries);
1404 sc->sample_count = entries;
1408 if (field_size != 4 && field_size != 8 && field_size != 16 && field_size != 32) {
1409 av_log(c->fc, AV_LOG_ERROR, "Invalid sample field size %d\n", field_size);
1413 if (entries >= UINT_MAX / sizeof(int) || entries >= (UINT_MAX - 4) / field_size)
1415 sc->sample_sizes = av_malloc(entries * sizeof(int));
1416 if (!sc->sample_sizes)
1417 return AVERROR(ENOMEM);
1419 num_bytes = (entries*field_size+4)>>3;
1421 buf = av_malloc(num_bytes+FF_INPUT_BUFFER_PADDING_SIZE);
1423 av_freep(&sc->sample_sizes);
1424 return AVERROR(ENOMEM);
1427 if (avio_read(pb, buf, num_bytes) < num_bytes) {
1428 av_freep(&sc->sample_sizes);
1433 init_get_bits(&gb, buf, 8*num_bytes);
1435 for(i=0; i<entries; i++)
1436 sc->sample_sizes[i] = get_bits_long(&gb, field_size);
1442 static int mov_read_stts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1445 MOVStreamContext *sc;
1446 unsigned int i, entries;
1448 int64_t total_sample_count=0;
1450 if (c->fc->nb_streams < 1)
1452 st = c->fc->streams[c->fc->nb_streams-1];
1455 avio_r8(pb); /* version */
1456 avio_rb24(pb); /* flags */
1457 entries = avio_rb32(pb);
1459 av_dlog(c->fc, "track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries);
1461 if(entries >= UINT_MAX / sizeof(*sc->stts_data))
1463 sc->stts_data = av_malloc(entries * sizeof(*sc->stts_data));
1465 return AVERROR(ENOMEM);
1466 sc->stts_count = entries;
1468 for(i=0; i<entries; i++) {
1469 int sample_duration;
1472 sample_count=avio_rb32(pb);
1473 sample_duration = avio_rb32(pb);
1474 sc->stts_data[i].count= sample_count;
1475 sc->stts_data[i].duration= sample_duration;
1477 av_dlog(c->fc, "sample_count=%d, sample_duration=%d\n",sample_count,sample_duration);
1479 duration+=(int64_t)sample_duration*sample_count;
1480 total_sample_count+=sample_count;
1483 st->nb_frames= total_sample_count;
1485 st->duration= duration;
1489 static int mov_read_ctts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1492 MOVStreamContext *sc;
1493 unsigned int i, entries;
1495 if (c->fc->nb_streams < 1)
1497 st = c->fc->streams[c->fc->nb_streams-1];
1500 avio_r8(pb); /* version */
1501 avio_rb24(pb); /* flags */
1502 entries = avio_rb32(pb);
1504 av_dlog(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
1506 if(entries >= UINT_MAX / sizeof(*sc->ctts_data))
1508 sc->ctts_data = av_malloc(entries * sizeof(*sc->ctts_data));
1510 return AVERROR(ENOMEM);
1511 sc->ctts_count = entries;
1513 for(i=0; i<entries; i++) {
1514 int count =avio_rb32(pb);
1515 int duration =avio_rb32(pb);
1517 sc->ctts_data[i].count = count;
1518 sc->ctts_data[i].duration= duration;
1519 if (duration < 0 && i+1<entries)
1520 sc->dts_shift = FFMAX(sc->dts_shift, -duration);
1523 av_dlog(c->fc, "dts shift %d\n", sc->dts_shift);
1528 static void mov_build_index(MOVContext *mov, AVStream *st)
1530 MOVStreamContext *sc = st->priv_data;
1531 int64_t current_offset;
1532 int64_t current_dts = 0;
1533 unsigned int stts_index = 0;
1534 unsigned int stsc_index = 0;
1535 unsigned int stss_index = 0;
1536 unsigned int stps_index = 0;
1538 uint64_t stream_size = 0;
1540 /* adjust first dts according to edit list */
1541 if (sc->time_offset && mov->time_scale > 0) {
1542 if (sc->time_offset < 0)
1543 sc->time_offset = av_rescale(sc->time_offset, sc->time_scale, mov->time_scale);
1544 current_dts = -sc->time_offset;
1545 if (sc->ctts_data && sc->stts_data &&
1546 sc->ctts_data[0].duration / FFMAX(sc->stts_data[0].duration, 1) > 16) {
1547 /* more than 16 frames delay, dts are likely wrong
1548 this happens with files created by iMovie */
1550 st->codec->has_b_frames = 1;
1554 /* only use old uncompressed audio chunk demuxing when stts specifies it */
1555 if (!(st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
1556 sc->stts_count == 1 && sc->stts_data[0].duration == 1)) {
1557 unsigned int current_sample = 0;
1558 unsigned int stts_sample = 0;
1559 unsigned int sample_size;
1560 unsigned int distance = 0;
1561 int key_off = sc->keyframes && sc->keyframes[0] == 1;
1563 current_dts -= sc->dts_shift;
1565 if (sc->sample_count >= UINT_MAX / sizeof(*st->index_entries))
1567 st->index_entries = av_malloc(sc->sample_count*sizeof(*st->index_entries));
1568 if (!st->index_entries)
1570 st->index_entries_allocated_size = sc->sample_count*sizeof(*st->index_entries);
1572 for (i = 0; i < sc->chunk_count; i++) {
1573 current_offset = sc->chunk_offsets[i];
1574 while (stsc_index + 1 < sc->stsc_count &&
1575 i + 1 == sc->stsc_data[stsc_index + 1].first)
1577 for (j = 0; j < sc->stsc_data[stsc_index].count; j++) {
1579 if (current_sample >= sc->sample_count) {
1580 av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
1584 if (!sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index]) {
1586 if (stss_index + 1 < sc->keyframe_count)
1588 } else if (sc->stps_count && current_sample+key_off == sc->stps_data[stps_index]) {
1590 if (stps_index + 1 < sc->stps_count)
1595 sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
1596 if(sc->pseudo_stream_id == -1 ||
1597 sc->stsc_data[stsc_index].id - 1 == sc->pseudo_stream_id) {
1598 AVIndexEntry *e = &st->index_entries[st->nb_index_entries++];
1599 e->pos = current_offset;
1600 e->timestamp = current_dts;
1601 e->size = sample_size;
1602 e->min_distance = distance;
1603 e->flags = keyframe ? AVINDEX_KEYFRAME : 0;
1604 av_dlog(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
1605 "size %d, distance %d, keyframe %d\n", st->index, current_sample,
1606 current_offset, current_dts, sample_size, distance, keyframe);
1609 current_offset += sample_size;
1610 stream_size += sample_size;
1611 current_dts += sc->stts_data[stts_index].duration;
1615 if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
1621 if (st->duration > 0)
1622 st->codec->bit_rate = stream_size*8*sc->time_scale/st->duration;
1624 unsigned chunk_samples, total = 0;
1626 // compute total chunk count
1627 for (i = 0; i < sc->stsc_count; i++) {
1628 unsigned count, chunk_count;
1630 chunk_samples = sc->stsc_data[i].count;
1631 if (sc->samples_per_frame && chunk_samples % sc->samples_per_frame) {
1632 av_log(mov->fc, AV_LOG_ERROR, "error unaligned chunk\n");
1636 if (sc->samples_per_frame >= 160) { // gsm
1637 count = chunk_samples / sc->samples_per_frame;
1638 } else if (sc->samples_per_frame > 1) {
1639 unsigned samples = (1024/sc->samples_per_frame)*sc->samples_per_frame;
1640 count = (chunk_samples+samples-1) / samples;
1642 count = (chunk_samples+1023) / 1024;
1645 if (i < sc->stsc_count - 1)
1646 chunk_count = sc->stsc_data[i+1].first - sc->stsc_data[i].first;
1648 chunk_count = sc->chunk_count - (sc->stsc_data[i].first - 1);
1649 total += chunk_count * count;
1652 av_dlog(mov->fc, "chunk count %d\n", total);
1653 if (total >= UINT_MAX / sizeof(*st->index_entries))
1655 st->index_entries = av_malloc(total*sizeof(*st->index_entries));
1656 if (!st->index_entries)
1658 st->index_entries_allocated_size = total*sizeof(*st->index_entries);
1661 for (i = 0; i < sc->chunk_count; i++) {
1662 current_offset = sc->chunk_offsets[i];
1663 if (stsc_index + 1 < sc->stsc_count &&
1664 i + 1 == sc->stsc_data[stsc_index + 1].first)
1666 chunk_samples = sc->stsc_data[stsc_index].count;
1668 while (chunk_samples > 0) {
1670 unsigned size, samples;
1672 if (sc->samples_per_frame >= 160) { // gsm
1673 samples = sc->samples_per_frame;
1674 size = sc->bytes_per_frame;
1676 if (sc->samples_per_frame > 1) {
1677 samples = FFMIN((1024 / sc->samples_per_frame)*
1678 sc->samples_per_frame, chunk_samples);
1679 size = (samples / sc->samples_per_frame) * sc->bytes_per_frame;
1681 samples = FFMIN(1024, chunk_samples);
1682 size = samples * sc->sample_size;
1686 if (st->nb_index_entries >= total) {
1687 av_log(mov->fc, AV_LOG_ERROR, "wrong chunk count %d\n", total);
1690 e = &st->index_entries[st->nb_index_entries++];
1691 e->pos = current_offset;
1692 e->timestamp = current_dts;
1694 e->min_distance = 0;
1695 e->flags = AVINDEX_KEYFRAME;
1696 av_dlog(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", "
1697 "size %d, duration %d\n", st->index, i, current_offset, current_dts,
1700 current_offset += size;
1701 current_dts += samples;
1702 chunk_samples -= samples;
1708 static int mov_open_dref(AVIOContext **pb, const char *src, MOVDref *ref)
1710 /* try relative path, we do not try the absolute because it can leak information about our
1711 system to an attacker */
1712 if (ref->nlvl_to > 0 && ref->nlvl_from > 0) {
1713 char filename[1024];
1714 const char *src_path;
1717 /* find a source dir */
1718 src_path = strrchr(src, '/');
1724 /* find a next level down to target */
1725 for (i = 0, l = strlen(ref->path) - 1; l >= 0; l--)
1726 if (ref->path[l] == '/') {
1727 if (i == ref->nlvl_to - 1)
1733 /* compose filename if next level down to target was found */
1734 if (i == ref->nlvl_to - 1 && src_path - src < sizeof(filename)) {
1735 memcpy(filename, src, src_path - src);
1736 filename[src_path - src] = 0;
1738 for (i = 1; i < ref->nlvl_from; i++)
1739 av_strlcat(filename, "../", 1024);
1741 av_strlcat(filename, ref->path + l + 1, 1024);
1743 if (!avio_open(pb, filename, AVIO_FLAG_READ))
1748 return AVERROR(ENOENT);
1751 static int mov_read_trak(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1754 MOVStreamContext *sc;
1757 st = av_new_stream(c->fc, c->fc->nb_streams);
1758 if (!st) return AVERROR(ENOMEM);
1759 sc = av_mallocz(sizeof(MOVStreamContext));
1760 if (!sc) return AVERROR(ENOMEM);
1763 st->codec->codec_type = AVMEDIA_TYPE_DATA;
1764 sc->ffindex = st->index;
1766 if ((ret = mov_read_default(c, pb, atom)) < 0)
1770 if (sc->chunk_count && (!sc->stts_count || !sc->stsc_count ||
1771 (!sc->sample_size && !sc->sample_count))) {
1772 av_log(c->fc, AV_LOG_ERROR, "stream %d, missing mandatory atoms, broken header\n",
1777 if (sc->time_scale <= 0) {
1778 av_log(c->fc, AV_LOG_WARNING, "stream %d, timescale not set\n", st->index);
1779 sc->time_scale = c->time_scale;
1780 if (sc->time_scale <= 0)
1784 av_set_pts_info(st, 64, 1, sc->time_scale);
1786 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
1787 !st->codec->frame_size && sc->stts_count == 1) {
1788 st->codec->frame_size = av_rescale(sc->stts_data[0].duration,
1789 st->codec->sample_rate, sc->time_scale);
1790 av_dlog(c->fc, "frame size %d\n", st->codec->frame_size);
1793 mov_build_index(c, st);
1795 if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) {
1796 MOVDref *dref = &sc->drefs[sc->dref_id - 1];
1797 if (mov_open_dref(&sc->pb, c->fc->filename, dref) < 0)
1798 av_log(c->fc, AV_LOG_ERROR,
1799 "stream %d, error opening alias: path='%s', dir='%s', "
1800 "filename='%s', volume='%s', nlvl_from=%d, nlvl_to=%d\n",
1801 st->index, dref->path, dref->dir, dref->filename,
1802 dref->volume, dref->nlvl_from, dref->nlvl_to);
1806 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1807 if (!st->sample_aspect_ratio.num &&
1808 (st->codec->width != sc->width || st->codec->height != sc->height)) {
1809 st->sample_aspect_ratio = av_d2q(((double)st->codec->height * sc->width) /
1810 ((double)st->codec->width * sc->height), INT_MAX);
1813 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
1814 sc->time_scale*st->nb_frames, st->duration, INT_MAX);
1816 if (sc->stts_count == 1 || (sc->stts_count == 2 && sc->stts_data[1].count == 1))
1817 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den,
1818 sc->time_scale, sc->stts_data[0].duration, INT_MAX);
1821 switch (st->codec->codec_id) {
1822 #if CONFIG_H261_DECODER
1825 #if CONFIG_H263_DECODER
1828 #if CONFIG_H264_DECODER
1831 #if CONFIG_MPEG4_DECODER
1832 case CODEC_ID_MPEG4:
1834 st->codec->width = 0; /* let decoder init width/height */
1835 st->codec->height= 0;
1839 /* Do not need those anymore. */
1840 av_freep(&sc->chunk_offsets);
1841 av_freep(&sc->stsc_data);
1842 av_freep(&sc->sample_sizes);
1843 av_freep(&sc->keyframes);
1844 av_freep(&sc->stts_data);
1845 av_freep(&sc->stps_data);
1850 static int mov_read_ilst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1853 c->itunes_metadata = 1;
1854 ret = mov_read_default(c, pb, atom);
1855 c->itunes_metadata = 0;
1859 static int mov_read_meta(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1861 while (atom.size > 8) {
1862 uint32_t tag = avio_rl32(pb);
1864 if (tag == MKTAG('h','d','l','r')) {
1865 avio_seek(pb, -8, SEEK_CUR);
1867 return mov_read_default(c, pb, atom);
1873 static int mov_read_tkhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1878 int64_t disp_transform[2];
1879 int display_matrix[3][2];
1881 MOVStreamContext *sc;
1884 if (c->fc->nb_streams < 1)
1886 st = c->fc->streams[c->fc->nb_streams-1];
1889 version = avio_r8(pb);
1890 avio_rb24(pb); /* flags */
1892 MOV_TRACK_ENABLED 0x0001
1893 MOV_TRACK_IN_MOVIE 0x0002
1894 MOV_TRACK_IN_PREVIEW 0x0004
1895 MOV_TRACK_IN_POSTER 0x0008
1902 avio_rb32(pb); /* creation time */
1903 avio_rb32(pb); /* modification time */
1905 st->id = (int)avio_rb32(pb); /* track id (NOT 0 !)*/
1906 avio_rb32(pb); /* reserved */
1908 /* highlevel (considering edits) duration in movie timebase */
1909 (version == 1) ? avio_rb64(pb) : avio_rb32(pb);
1910 avio_rb32(pb); /* reserved */
1911 avio_rb32(pb); /* reserved */
1913 avio_rb16(pb); /* layer */
1914 avio_rb16(pb); /* alternate group */
1915 avio_rb16(pb); /* volume */
1916 avio_rb16(pb); /* reserved */
1918 //read in the display matrix (outlined in ISO 14496-12, Section 6.2.2)
1919 // they're kept in fixed point format through all calculations
1920 // ignore u,v,z b/c we don't need the scale factor to calc aspect ratio
1921 for (i = 0; i < 3; i++) {
1922 display_matrix[i][0] = avio_rb32(pb); // 16.16 fixed point
1923 display_matrix[i][1] = avio_rb32(pb); // 16.16 fixed point
1924 avio_rb32(pb); // 2.30 fixed point (not used)
1927 width = avio_rb32(pb); // 16.16 fixed point track width
1928 height = avio_rb32(pb); // 16.16 fixed point track height
1929 sc->width = width >> 16;
1930 sc->height = height >> 16;
1932 if (display_matrix[0][0] == -65536 && display_matrix[1][1] == -65536) {
1933 av_dict_set(&st->metadata, "rotate", "180", 0);
1936 // transform the display width/height according to the matrix
1937 // skip this if the display matrix is the default identity matrix
1938 // or if it is rotating the picture, ex iPhone 3GS
1939 // to keep the same scale, use [width height 1<<16]
1940 if (width && height &&
1941 ((display_matrix[0][0] != 65536 ||
1942 display_matrix[1][1] != 65536) &&
1943 !display_matrix[0][1] &&
1944 !display_matrix[1][0] &&
1945 !display_matrix[2][0] && !display_matrix[2][1])) {
1946 for (i = 0; i < 2; i++)
1948 (int64_t) width * display_matrix[0][i] +
1949 (int64_t) height * display_matrix[1][i] +
1950 ((int64_t) display_matrix[2][i] << 16);
1952 //sample aspect ratio is new width/height divided by old width/height
1953 st->sample_aspect_ratio = av_d2q(
1954 ((double) disp_transform[0] * height) /
1955 ((double) disp_transform[1] * width), INT_MAX);
1960 static int mov_read_tfhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1962 MOVFragment *frag = &c->fragment;
1963 MOVTrackExt *trex = NULL;
1964 int flags, track_id, i;
1966 avio_r8(pb); /* version */
1967 flags = avio_rb24(pb);
1969 track_id = avio_rb32(pb);
1972 frag->track_id = track_id;
1973 for (i = 0; i < c->trex_count; i++)
1974 if (c->trex_data[i].track_id == frag->track_id) {
1975 trex = &c->trex_data[i];
1979 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding trex\n");
1983 if (flags & 0x01) frag->base_data_offset = avio_rb64(pb);
1984 else frag->base_data_offset = frag->moof_offset;
1985 if (flags & 0x02) frag->stsd_id = avio_rb32(pb);
1986 else frag->stsd_id = trex->stsd_id;
1988 frag->duration = flags & 0x08 ? avio_rb32(pb) : trex->duration;
1989 frag->size = flags & 0x10 ? avio_rb32(pb) : trex->size;
1990 frag->flags = flags & 0x20 ? avio_rb32(pb) : trex->flags;
1991 av_dlog(c->fc, "frag flags 0x%x\n", frag->flags);
1995 static int mov_read_chap(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1997 c->chapter_track = avio_rb32(pb);
2001 static int mov_read_trex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2005 if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data))
2007 trex = av_realloc(c->trex_data, (c->trex_count+1)*sizeof(*c->trex_data));
2009 return AVERROR(ENOMEM);
2010 c->trex_data = trex;
2011 trex = &c->trex_data[c->trex_count++];
2012 avio_r8(pb); /* version */
2013 avio_rb24(pb); /* flags */
2014 trex->track_id = avio_rb32(pb);
2015 trex->stsd_id = avio_rb32(pb);
2016 trex->duration = avio_rb32(pb);
2017 trex->size = avio_rb32(pb);
2018 trex->flags = avio_rb32(pb);
2022 static int mov_read_trun(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2024 MOVFragment *frag = &c->fragment;
2025 AVStream *st = NULL;
2026 MOVStreamContext *sc;
2030 int data_offset = 0;
2031 unsigned entries, first_sample_flags = frag->flags;
2032 int flags, distance, i;
2034 for (i = 0; i < c->fc->nb_streams; i++) {
2035 if (c->fc->streams[i]->id == frag->track_id) {
2036 st = c->fc->streams[i];
2041 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id);
2045 if (sc->pseudo_stream_id+1 != frag->stsd_id)
2047 avio_r8(pb); /* version */
2048 flags = avio_rb24(pb);
2049 entries = avio_rb32(pb);
2050 av_dlog(c->fc, "flags 0x%x entries %d\n", flags, entries);
2052 /* Always assume the presence of composition time offsets.
2053 * Without this assumption, for instance, we cannot deal with a track in fragmented movies that meet the following.
2054 * 1) in the initial movie, there are no samples.
2055 * 2) in the first movie fragment, there is only one sample without composition time offset.
2056 * 3) in the subsequent movie fragments, there are samples with composition time offset. */
2057 if (!sc->ctts_count && sc->sample_count)
2059 /* Complement ctts table if moov atom doesn't have ctts atom. */
2060 ctts_data = av_malloc(sizeof(*sc->ctts_data));
2062 return AVERROR(ENOMEM);
2063 sc->ctts_data = ctts_data;
2064 sc->ctts_data[sc->ctts_count].count = sc->sample_count;
2065 sc->ctts_data[sc->ctts_count].duration = 0;
2068 if ((uint64_t)entries+sc->ctts_count >= UINT_MAX/sizeof(*sc->ctts_data))
2070 ctts_data = av_realloc(sc->ctts_data,
2071 (entries+sc->ctts_count)*sizeof(*sc->ctts_data));
2073 return AVERROR(ENOMEM);
2074 sc->ctts_data = ctts_data;
2076 if (flags & 0x001) data_offset = avio_rb32(pb);
2077 if (flags & 0x004) first_sample_flags = avio_rb32(pb);
2078 dts = st->duration - sc->time_offset;
2079 offset = frag->base_data_offset + data_offset;
2081 av_dlog(c->fc, "first sample flags 0x%x\n", first_sample_flags);
2082 for (i = 0; i < entries; i++) {
2083 unsigned sample_size = frag->size;
2084 int sample_flags = i ? frag->flags : first_sample_flags;
2085 unsigned sample_duration = frag->duration;
2088 if (flags & 0x100) sample_duration = avio_rb32(pb);
2089 if (flags & 0x200) sample_size = avio_rb32(pb);
2090 if (flags & 0x400) sample_flags = avio_rb32(pb);
2091 sc->ctts_data[sc->ctts_count].count = 1;
2092 sc->ctts_data[sc->ctts_count].duration = (flags & 0x800) ? avio_rb32(pb) : 0;
2094 if ((keyframe = st->codec->codec_type == AVMEDIA_TYPE_AUDIO ||
2095 (flags & 0x004 && !i && !sample_flags) || sample_flags & 0x2000000))
2097 av_add_index_entry(st, offset, dts, sample_size, distance,
2098 keyframe ? AVINDEX_KEYFRAME : 0);
2099 av_dlog(c->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
2100 "size %d, distance %d, keyframe %d\n", st->index, sc->sample_count+i,
2101 offset, dts, sample_size, distance, keyframe);
2103 dts += sample_duration;
2104 offset += sample_size;
2106 frag->moof_offset = offset;
2107 st->duration = dts + sc->time_offset;
2111 /* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
2112 /* like the files created with Adobe Premiere 5.0, for samples see */
2113 /* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
2114 static int mov_read_wide(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2119 return 0; /* continue */
2120 if (avio_rb32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
2121 avio_skip(pb, atom.size - 4);
2124 atom.type = avio_rl32(pb);
2126 if (atom.type != MKTAG('m','d','a','t')) {
2127 avio_skip(pb, atom.size);
2130 err = mov_read_mdat(c, pb, atom);
2134 static int mov_read_cmov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2139 uint8_t *moov_data; /* uncompressed data */
2140 long cmov_len, moov_len;
2143 avio_rb32(pb); /* dcom atom */
2144 if (avio_rl32(pb) != MKTAG('d','c','o','m'))
2146 if (avio_rl32(pb) != MKTAG('z','l','i','b')) {
2147 av_log(c->fc, AV_LOG_ERROR, "unknown compression for cmov atom !");
2150 avio_rb32(pb); /* cmvd atom */
2151 if (avio_rl32(pb) != MKTAG('c','m','v','d'))
2153 moov_len = avio_rb32(pb); /* uncompressed size */
2154 cmov_len = atom.size - 6 * 4;
2156 cmov_data = av_malloc(cmov_len);
2158 return AVERROR(ENOMEM);
2159 moov_data = av_malloc(moov_len);
2162 return AVERROR(ENOMEM);
2164 avio_read(pb, cmov_data, cmov_len);
2165 if(uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
2166 goto free_and_return;
2167 if(ffio_init_context(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
2168 goto free_and_return;
2169 atom.type = MKTAG('m','o','o','v');
2170 atom.size = moov_len;
2171 ret = mov_read_default(c, &ctx, atom);
2177 av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
2182 /* edit list atom */
2183 static int mov_read_elst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2185 MOVStreamContext *sc;
2186 int i, edit_count, version;
2188 if (c->fc->nb_streams < 1)
2190 sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
2192 version = avio_r8(pb); /* version */
2193 avio_rb24(pb); /* flags */
2194 edit_count = avio_rb32(pb); /* entries */
2196 if((uint64_t)edit_count*12+8 > atom.size)
2199 for(i=0; i<edit_count; i++){
2203 duration = avio_rb64(pb);
2204 time = avio_rb64(pb);
2206 duration = avio_rb32(pb); /* segment duration */
2207 time = (int32_t)avio_rb32(pb); /* media time */
2209 avio_rb32(pb); /* Media rate */
2210 if (i == 0 && time >= -1) {
2211 sc->time_offset = time != -1 ? time : -duration;
2216 av_log(c->fc, AV_LOG_WARNING, "multiple edit list entries, "
2217 "a/v desync might occur, patch welcome\n");
2219 av_dlog(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, edit_count);
2223 static int mov_read_chan(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2226 return AVERROR_INVALIDDATA;
2228 ff_mov_read_chan(c->fc, atom.size - 4, c->fc->streams[0]->codec);
2232 static const MOVParseTableEntry mov_default_parse_table[] = {
2233 { MKTAG('a','v','s','s'), mov_read_extradata },
2234 { MKTAG('c','h','p','l'), mov_read_chpl },
2235 { MKTAG('c','o','6','4'), mov_read_stco },
2236 { MKTAG('c','t','t','s'), mov_read_ctts }, /* composition time to sample */
2237 { MKTAG('d','i','n','f'), mov_read_default },
2238 { MKTAG('d','r','e','f'), mov_read_dref },
2239 { MKTAG('e','d','t','s'), mov_read_default },
2240 { MKTAG('e','l','s','t'), mov_read_elst },
2241 { MKTAG('e','n','d','a'), mov_read_enda },
2242 { MKTAG('f','i','e','l'), mov_read_extradata },
2243 { MKTAG('f','t','y','p'), mov_read_ftyp },
2244 { MKTAG('g','l','b','l'), mov_read_glbl },
2245 { MKTAG('h','d','l','r'), mov_read_hdlr },
2246 { MKTAG('i','l','s','t'), mov_read_ilst },
2247 { MKTAG('j','p','2','h'), mov_read_extradata },
2248 { MKTAG('m','d','a','t'), mov_read_mdat },
2249 { MKTAG('m','d','h','d'), mov_read_mdhd },
2250 { MKTAG('m','d','i','a'), mov_read_default },
2251 { MKTAG('m','e','t','a'), mov_read_meta },
2252 { MKTAG('m','i','n','f'), mov_read_default },
2253 { MKTAG('m','o','o','f'), mov_read_moof },
2254 { MKTAG('m','o','o','v'), mov_read_moov },
2255 { MKTAG('m','v','e','x'), mov_read_default },
2256 { MKTAG('m','v','h','d'), mov_read_mvhd },
2257 { MKTAG('S','M','I',' '), mov_read_smi }, /* Sorenson extension ??? */
2258 { MKTAG('a','l','a','c'), mov_read_extradata }, /* alac specific atom */
2259 { MKTAG('a','v','c','C'), mov_read_glbl },
2260 { MKTAG('p','a','s','p'), mov_read_pasp },
2261 { MKTAG('s','t','b','l'), mov_read_default },
2262 { MKTAG('s','t','c','o'), mov_read_stco },
2263 { MKTAG('s','t','p','s'), mov_read_stps },
2264 { MKTAG('s','t','r','f'), mov_read_strf },
2265 { MKTAG('s','t','s','c'), mov_read_stsc },
2266 { MKTAG('s','t','s','d'), mov_read_stsd }, /* sample description */
2267 { MKTAG('s','t','s','s'), mov_read_stss }, /* sync sample */
2268 { MKTAG('s','t','s','z'), mov_read_stsz }, /* sample size */
2269 { MKTAG('s','t','t','s'), mov_read_stts },
2270 { MKTAG('s','t','z','2'), mov_read_stsz }, /* compact sample size */
2271 { MKTAG('t','k','h','d'), mov_read_tkhd }, /* track header */
2272 { MKTAG('t','f','h','d'), mov_read_tfhd }, /* track fragment header */
2273 { MKTAG('t','r','a','k'), mov_read_trak },
2274 { MKTAG('t','r','a','f'), mov_read_default },
2275 { MKTAG('t','r','e','f'), mov_read_default },
2276 { MKTAG('c','h','a','p'), mov_read_chap },
2277 { MKTAG('t','r','e','x'), mov_read_trex },
2278 { MKTAG('t','r','u','n'), mov_read_trun },
2279 { MKTAG('u','d','t','a'), mov_read_default },
2280 { MKTAG('w','a','v','e'), mov_read_wave },
2281 { MKTAG('e','s','d','s'), mov_read_esds },
2282 { MKTAG('d','a','c','3'), mov_read_dac3 }, /* AC-3 info */
2283 { MKTAG('w','i','d','e'), mov_read_wide }, /* place holder */
2284 { MKTAG('w','f','e','x'), mov_read_wfex },
2285 { MKTAG('c','m','o','v'), mov_read_cmov },
2286 { MKTAG('c','h','a','n'), mov_read_chan },
2290 static int mov_probe(AVProbeData *p)
2292 unsigned int offset;
2296 /* check file header */
2299 /* ignore invalid offset */
2300 if ((offset + 8) > (unsigned int)p->buf_size)
2302 tag = AV_RL32(p->buf + offset + 4);
2304 /* check for obvious tags */
2305 case MKTAG('j','P',' ',' '): /* jpeg 2000 signature */
2306 case MKTAG('m','o','o','v'):
2307 case MKTAG('m','d','a','t'):
2308 case MKTAG('p','n','o','t'): /* detect movs with preview pics like ew.mov and april.mov */
2309 case MKTAG('u','d','t','a'): /* Packet Video PVAuthor adds this and a lot of more junk */
2310 case MKTAG('f','t','y','p'):
2311 return AVPROBE_SCORE_MAX;
2312 /* those are more common words, so rate then a bit less */
2313 case MKTAG('e','d','i','w'): /* xdcam files have reverted first tags */
2314 case MKTAG('w','i','d','e'):
2315 case MKTAG('f','r','e','e'):
2316 case MKTAG('j','u','n','k'):
2317 case MKTAG('p','i','c','t'):
2318 return AVPROBE_SCORE_MAX - 5;
2319 case MKTAG(0x82,0x82,0x7f,0x7d):
2320 case MKTAG('s','k','i','p'):
2321 case MKTAG('u','u','i','d'):
2322 case MKTAG('p','r','f','l'):
2323 offset = AV_RB32(p->buf+offset) + offset;
2324 /* if we only find those cause probedata is too small at least rate them */
2325 score = AVPROBE_SCORE_MAX - 50;
2328 /* unrecognized tag */
2334 // must be done after parsing all trak because there's no order requirement
2335 static void mov_read_chapters(AVFormatContext *s)
2337 MOVContext *mov = s->priv_data;
2338 AVStream *st = NULL;
2339 MOVStreamContext *sc;
2343 for (i = 0; i < s->nb_streams; i++)
2344 if (s->streams[i]->id == mov->chapter_track) {
2349 av_log(s, AV_LOG_ERROR, "Referenced QT chapter track not found\n");
2353 st->discard = AVDISCARD_ALL;
2355 cur_pos = avio_tell(sc->pb);
2357 for (i = 0; i < st->nb_index_entries; i++) {
2358 AVIndexEntry *sample = &st->index_entries[i];
2359 int64_t end = i+1 < st->nb_index_entries ? st->index_entries[i+1].timestamp : st->duration;
2364 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
2365 av_log(s, AV_LOG_ERROR, "Chapter %d not found in file\n", i);
2369 // the first two bytes are the length of the title
2370 len = avio_rb16(sc->pb);
2371 if (len > sample->size-2)
2373 title_len = 2*len + 1;
2374 if (!(title = av_mallocz(title_len)))
2377 // The samples could theoretically be in any encoding if there's an encd
2378 // atom following, but in practice are only utf-8 or utf-16, distinguished
2379 // instead by the presence of a BOM
2380 ch = avio_rb16(sc->pb);
2382 avio_get_str16be(sc->pb, len, title, title_len);
2383 else if (ch == 0xfffe)
2384 avio_get_str16le(sc->pb, len, title, title_len);
2387 get_strz(sc->pb, title + 2, len - 1);
2390 ff_new_chapter(s, i, st->time_base, sample->timestamp, end, title);
2394 avio_seek(sc->pb, cur_pos, SEEK_SET);
2397 static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
2399 MOVContext *mov = s->priv_data;
2400 AVIOContext *pb = s->pb;
2402 MOVAtom atom = { AV_RL32("root") };
2405 /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
2407 atom.size = avio_size(pb);
2409 atom.size = INT64_MAX;
2411 /* check MOV header */
2412 if ((err = mov_read_default(mov, pb, atom)) < 0) {
2413 av_log(s, AV_LOG_ERROR, "error reading header: %d\n", err);
2416 if (!mov->found_moov) {
2417 av_log(s, AV_LOG_ERROR, "moov atom not found\n");
2420 av_dlog(mov->fc, "on_parse_exit_offset=%"PRId64"\n", avio_tell(pb));
2422 if (pb->seekable && mov->chapter_track > 0)
2423 mov_read_chapters(s);
2428 static AVIndexEntry *mov_find_next_sample(AVFormatContext *s, AVStream **st)
2430 AVIndexEntry *sample = NULL;
2431 int64_t best_dts = INT64_MAX;
2433 for (i = 0; i < s->nb_streams; i++) {
2434 AVStream *avst = s->streams[i];
2435 MOVStreamContext *msc = avst->priv_data;
2436 if (msc->pb && msc->current_sample < avst->nb_index_entries) {
2437 AVIndexEntry *current_sample = &avst->index_entries[msc->current_sample];
2438 int64_t dts = av_rescale(current_sample->timestamp, AV_TIME_BASE, msc->time_scale);
2439 av_dlog(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
2440 if (!sample || (!s->pb->seekable && current_sample->pos < sample->pos) ||
2442 ((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb &&
2443 ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
2444 (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) {
2445 sample = current_sample;
2454 static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
2456 MOVContext *mov = s->priv_data;
2457 MOVStreamContext *sc;
2458 AVIndexEntry *sample;
2459 AVStream *st = NULL;
2462 sample = mov_find_next_sample(s, &st);
2464 mov->found_mdat = 0;
2465 if (s->pb->seekable||
2466 mov_read_default(mov, s->pb, (MOVAtom){ AV_RL32("root"), INT64_MAX }) < 0 ||
2469 av_dlog(s, "read fragments, offset 0x%"PRIx64"\n", avio_tell(s->pb));
2473 /* must be done just before reading, to avoid infinite loop on sample */
2474 sc->current_sample++;
2476 if (st->discard != AVDISCARD_ALL) {
2477 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
2478 av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
2479 sc->ffindex, sample->pos);
2482 ret = av_get_packet(sc->pb, pkt, sample->size);
2485 if (sc->has_palette) {
2488 pal = av_packet_new_side_data(pkt, AV_PKT_DATA_PALETTE, AVPALETTE_SIZE);
2490 av_log(mov->fc, AV_LOG_ERROR, "Cannot append palette to packet\n");
2492 memcpy(pal, sc->palette, AVPALETTE_SIZE);
2493 sc->has_palette = 0;
2496 #if CONFIG_DV_DEMUXER
2497 if (mov->dv_demux && sc->dv_audio_container) {
2498 dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size, pkt->pos);
2501 ret = dv_get_packet(mov->dv_demux, pkt);
2508 pkt->stream_index = sc->ffindex;
2509 pkt->dts = sample->timestamp;
2510 if (sc->ctts_data) {
2511 pkt->pts = pkt->dts + sc->dts_shift + sc->ctts_data[sc->ctts_index].duration;
2512 /* update ctts context */
2514 if (sc->ctts_index < sc->ctts_count &&
2515 sc->ctts_data[sc->ctts_index].count == sc->ctts_sample) {
2517 sc->ctts_sample = 0;
2520 pkt->dts = AV_NOPTS_VALUE;
2522 int64_t next_dts = (sc->current_sample < st->nb_index_entries) ?
2523 st->index_entries[sc->current_sample].timestamp : st->duration;
2524 pkt->duration = next_dts - pkt->dts;
2525 pkt->pts = pkt->dts;
2527 if (st->discard == AVDISCARD_ALL)
2529 pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? AV_PKT_FLAG_KEY : 0;
2530 pkt->pos = sample->pos;
2531 av_dlog(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n",
2532 pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
2536 static int mov_seek_stream(AVFormatContext *s, AVStream *st, int64_t timestamp, int flags)
2538 MOVStreamContext *sc = st->priv_data;
2539 int sample, time_sample;
2542 sample = av_index_search_timestamp(st, timestamp, flags);
2543 av_dlog(s, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
2544 if (sample < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
2546 if (sample < 0) /* not sure what to do */
2548 sc->current_sample = sample;
2549 av_dlog(s, "stream %d, found sample %d\n", st->index, sc->current_sample);
2550 /* adjust ctts index */
2551 if (sc->ctts_data) {
2553 for (i = 0; i < sc->ctts_count; i++) {
2554 int next = time_sample + sc->ctts_data[i].count;
2555 if (next > sc->current_sample) {
2557 sc->ctts_sample = sc->current_sample - time_sample;
2566 static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
2569 int64_t seek_timestamp, timestamp;
2573 if (stream_index >= s->nb_streams)
2575 if (sample_time < 0)
2578 st = s->streams[stream_index];
2579 sample = mov_seek_stream(s, st, sample_time, flags);
2583 /* adjust seek timestamp to found sample timestamp */
2584 seek_timestamp = st->index_entries[sample].timestamp;
2586 for (i = 0; i < s->nb_streams; i++) {
2588 if (stream_index == i)
2591 timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
2592 mov_seek_stream(s, st, timestamp, flags);
2597 static int mov_read_close(AVFormatContext *s)
2599 MOVContext *mov = s->priv_data;
2602 for (i = 0; i < s->nb_streams; i++) {
2603 AVStream *st = s->streams[i];
2604 MOVStreamContext *sc = st->priv_data;
2606 av_freep(&sc->ctts_data);
2607 for (j = 0; j < sc->drefs_count; j++) {
2608 av_freep(&sc->drefs[j].path);
2609 av_freep(&sc->drefs[j].dir);
2611 av_freep(&sc->drefs);
2612 if (sc->pb && sc->pb != s->pb)
2615 av_freep(&st->codec->palctrl);
2618 if (mov->dv_demux) {
2619 for(i = 0; i < mov->dv_fctx->nb_streams; i++) {
2620 av_freep(&mov->dv_fctx->streams[i]->codec);
2621 av_freep(&mov->dv_fctx->streams[i]);
2623 av_freep(&mov->dv_fctx);
2624 av_freep(&mov->dv_demux);
2627 av_freep(&mov->trex_data);
2632 AVInputFormat ff_mov_demuxer = {
2633 .name = "mov,mp4,m4a,3gp,3g2,mj2",
2634 .long_name = NULL_IF_CONFIG_SMALL("QuickTime/MPEG-4/Motion JPEG 2000 format"),
2635 .priv_data_size = sizeof(MOVContext),
2636 .read_probe = mov_probe,
2637 .read_header = mov_read_header,
2638 .read_packet = mov_read_packet,
2639 .read_close = mov_read_close,
2640 .read_seek = mov_read_seek,