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 DEBUG_METADATA
27 //#define MOV_EXPORT_ALL_METADATA
29 #include "libavutil/intreadwrite.h"
30 #include "libavutil/avstring.h"
34 #include "libavcodec/get_bits.h"
41 * First version by Francois Revol revol@free.fr
42 * Seek function by Gael Chardon gael.dev@4now.net
44 * Features and limitations:
45 * - reads most of the QT files I have (at least the structure),
46 * Sample QuickTime files with mp3 audio can be found at: http://www.3ivx.com/showcase.html
47 * - the code is quite ugly... maybe I won't do it recursive next time :-)
49 * Funny I didn't know about http://sourceforge.net/projects/qt-ffmpeg/
50 * when coding this :) (it's a writer anyway)
52 * Reference documents:
53 * http://www.geocities.com/xhelmboyx/quicktime/formats/qtm-layout.txt
55 * http://developer.apple.com/documentation/QuickTime/QTFF/
56 * http://developer.apple.com/documentation/QuickTime/QTFF/qtff.pdf
57 * QuickTime is a trademark of Apple (AFAIK :))
60 #include "qtpalette.h"
66 /* XXX: it's the first time I make a recursive parser I think... sorry if it's ugly :P */
68 /* those functions parse an atom */
70 0: continue to parse next atom
71 <0: error occurred, exit
73 /* links atom IDs to parse functions */
74 typedef struct MOVParseTableEntry {
76 int (*parse)(MOVContext *ctx, ByteIOContext *pb, MOVAtom atom);
79 static const MOVParseTableEntry mov_default_parse_table[];
81 static int mov_metadata_trkn(MOVContext *c, ByteIOContext *pb, unsigned len)
85 get_be16(pb); // unknown
86 snprintf(buf, sizeof(buf), "%d", get_be16(pb));
87 av_metadata_set2(&c->fc->metadata, "track", buf, 0);
89 get_be16(pb); // total tracks
94 static const uint32_t mac_to_unicode[128] = {
95 0x00C4,0x00C5,0x00C7,0x00C9,0x00D1,0x00D6,0x00DC,0x00E1,
96 0x00E0,0x00E2,0x00E4,0x00E3,0x00E5,0x00E7,0x00E9,0x00E8,
97 0x00EA,0x00EB,0x00ED,0x00EC,0x00EE,0x00EF,0x00F1,0x00F3,
98 0x00F2,0x00F4,0x00F6,0x00F5,0x00FA,0x00F9,0x00FB,0x00FC,
99 0x2020,0x00B0,0x00A2,0x00A3,0x00A7,0x2022,0x00B6,0x00DF,
100 0x00AE,0x00A9,0x2122,0x00B4,0x00A8,0x2260,0x00C6,0x00D8,
101 0x221E,0x00B1,0x2264,0x2265,0x00A5,0x00B5,0x2202,0x2211,
102 0x220F,0x03C0,0x222B,0x00AA,0x00BA,0x03A9,0x00E6,0x00F8,
103 0x00BF,0x00A1,0x00AC,0x221A,0x0192,0x2248,0x2206,0x00AB,
104 0x00BB,0x2026,0x00A0,0x00C0,0x00C3,0x00D5,0x0152,0x0153,
105 0x2013,0x2014,0x201C,0x201D,0x2018,0x2019,0x00F7,0x25CA,
106 0x00FF,0x0178,0x2044,0x20AC,0x2039,0x203A,0xFB01,0xFB02,
107 0x2021,0x00B7,0x201A,0x201E,0x2030,0x00C2,0x00CA,0x00C1,
108 0x00CB,0x00C8,0x00CD,0x00CE,0x00CF,0x00CC,0x00D3,0x00D4,
109 0xF8FF,0x00D2,0x00DA,0x00DB,0x00D9,0x0131,0x02C6,0x02DC,
110 0x00AF,0x02D8,0x02D9,0x02DA,0x00B8,0x02DD,0x02DB,0x02C7,
113 static int mov_read_mac_string(MOVContext *c, ByteIOContext *pb, int len,
114 char *dst, int dstlen)
117 char *end = dst+dstlen-1;
120 for (i = 0; i < len; i++) {
121 uint8_t t, c = get_byte(pb);
122 if (c < 0x80 && p < end)
125 PUT_UTF8(mac_to_unicode[c-0x80], t, if (p < end) *p++ = t;);
131 static int mov_read_udta_string(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
133 #ifdef MOV_EXPORT_ALL_METADATA
136 char str[1024], key2[16], language[4] = {0};
137 const char *key = NULL;
138 uint16_t str_size, langcode = 0;
139 uint32_t data_type = 0;
140 int (*parse)(MOVContext*, ByteIOContext*, unsigned) = NULL;
143 case MKTAG(0xa9,'n','a','m'): key = "title"; break;
144 case MKTAG(0xa9,'a','u','t'):
145 case MKTAG(0xa9,'A','R','T'): key = "artist"; break;
146 case MKTAG(0xa9,'w','r','t'): key = "composer"; break;
147 case MKTAG( 'c','p','r','t'):
148 case MKTAG(0xa9,'c','p','y'): key = "copyright"; break;
149 case MKTAG(0xa9,'c','m','t'):
150 case MKTAG(0xa9,'i','n','f'): key = "comment"; break;
151 case MKTAG(0xa9,'a','l','b'): key = "album"; break;
152 case MKTAG(0xa9,'d','a','y'): key = "date"; break;
153 case MKTAG(0xa9,'g','e','n'): key = "genre"; break;
154 case MKTAG(0xa9,'t','o','o'):
155 case MKTAG(0xa9,'s','w','r'): key = "encoder"; break;
156 case MKTAG(0xa9,'e','n','c'): key = "encoder"; break;
157 case MKTAG( 'd','e','s','c'): key = "description";break;
158 case MKTAG( 'l','d','e','s'): key = "synopsis"; break;
159 case MKTAG( 't','v','s','h'): key = "show"; break;
160 case MKTAG( 't','v','e','n'): key = "episode_id";break;
161 case MKTAG( 't','v','n','n'): key = "network"; break;
162 case MKTAG( 't','r','k','n'): key = "track";
163 parse = mov_metadata_trkn; break;
166 if (c->itunes_metadata && atom.size > 8) {
167 int data_size = get_be32(pb);
168 int tag = get_le32(pb);
169 if (tag == MKTAG('d','a','t','a')) {
170 data_type = get_be32(pb); // type
171 get_be32(pb); // unknown
172 str_size = data_size - 16;
175 } else if (atom.size > 4 && key && !c->itunes_metadata) {
176 str_size = get_be16(pb); // string length
177 langcode = get_be16(pb);
178 ff_mov_lang_to_iso639(langcode, language);
181 str_size = atom.size;
183 #ifdef MOV_EXPORT_ALL_METADATA
185 snprintf(tmp_key, 5, "%.4s", (char*)&atom.type);
195 str_size = FFMIN3(sizeof(str)-1, str_size, atom.size);
198 parse(c, pb, str_size);
200 if (data_type == 3 || (data_type == 0 && langcode < 0x800)) { // MAC Encoded
201 mov_read_mac_string(c, pb, str_size, str, sizeof(str));
203 get_buffer(pb, str, str_size);
206 av_metadata_set2(&c->fc->metadata, key, str, 0);
207 if (*language && strcmp(language, "und")) {
208 snprintf(key2, sizeof(key2), "%s-%s", key, language);
209 av_metadata_set2(&c->fc->metadata, key2, str, 0);
212 #ifdef DEBUG_METADATA
213 av_log(c->fc, AV_LOG_DEBUG, "lang \"%3s\" ", language);
214 av_log(c->fc, AV_LOG_DEBUG, "tag \"%s\" value \"%s\" atom \"%.4s\" %d %lld\n",
215 key, str, (char*)&atom.type, str_size, atom.size);
221 static int mov_read_chpl(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
224 int i, nb_chapters, str_len, version;
227 if ((atom.size -= 5) < 0)
230 version = get_byte(pb);
234 nb_chapters = get_byte(pb);
236 for (i = 0; i < nb_chapters; i++) {
240 start = get_be64(pb);
241 str_len = get_byte(pb);
243 if ((atom.size -= 9+str_len) < 0)
246 get_buffer(pb, str, str_len);
248 ff_new_chapter(c->fc, i, (AVRational){1,10000000}, start, AV_NOPTS_VALUE, str);
253 static int mov_read_default(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
255 int64_t total_size = 0;
260 atom.size = INT64_MAX;
261 while (total_size + 8 < atom.size && !url_feof(pb)) {
262 int (*parse)(MOVContext*, ByteIOContext*, MOVAtom) = NULL;
266 a.size = get_be32(pb);
267 a.type = get_le32(pb);
269 dprintf(c->fc, "type: %08x '%.4s' parent:'%.4s' sz: %"PRId64" %"PRId64" %"PRId64"\n",
270 a.type, (char*)&a.type, (char*)&atom.type, a.size, total_size, atom.size);
272 if (a.size == 1) { /* 64 bit extended size */
273 a.size = get_be64(pb) - 8;
277 a.size = atom.size - total_size;
284 a.size = FFMIN(a.size, atom.size - total_size);
286 for (i = 0; mov_default_parse_table[i].type; i++)
287 if (mov_default_parse_table[i].type == a.type) {
288 parse = mov_default_parse_table[i].parse;
292 // container is user data
293 if (!parse && (atom.type == MKTAG('u','d','t','a') ||
294 atom.type == MKTAG('i','l','s','t')))
295 parse = mov_read_udta_string;
297 if (!parse) { /* skip leaf atoms data */
298 url_fskip(pb, a.size);
300 int64_t start_pos = url_ftell(pb);
302 int err = parse(c, pb, a);
305 if (c->found_moov && c->found_mdat &&
306 (url_is_streamed(pb) || start_pos + a.size == url_fsize(pb)))
308 left = a.size - url_ftell(pb) + start_pos;
309 if (left > 0) /* skip garbage at atom end */
313 total_size += a.size;
316 if (total_size < atom.size && atom.size < 0x7ffff)
317 url_fskip(pb, atom.size - total_size);
322 static int mov_read_dref(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
325 MOVStreamContext *sc;
328 if (c->fc->nb_streams < 1)
330 st = c->fc->streams[c->fc->nb_streams-1];
333 get_be32(pb); // version + flags
334 entries = get_be32(pb);
335 if (entries >= UINT_MAX / sizeof(*sc->drefs))
337 sc->drefs = av_mallocz(entries * sizeof(*sc->drefs));
339 return AVERROR(ENOMEM);
340 sc->drefs_count = entries;
342 for (i = 0; i < sc->drefs_count; i++) {
343 MOVDref *dref = &sc->drefs[i];
344 uint32_t size = get_be32(pb);
345 int64_t next = url_ftell(pb) + size - 4;
350 dref->type = get_le32(pb);
351 get_be32(pb); // version + flags
352 dprintf(c->fc, "type %.4s size %d\n", (char*)&dref->type, size);
354 if (dref->type == MKTAG('a','l','i','s') && size > 150) {
355 /* macintosh alias record */
356 uint16_t volume_len, len;
361 volume_len = get_byte(pb);
362 volume_len = FFMIN(volume_len, 27);
363 get_buffer(pb, dref->volume, 27);
364 dref->volume[volume_len] = 0;
365 av_log(c->fc, AV_LOG_DEBUG, "volume %s, len %d\n", dref->volume, volume_len);
370 len = FFMIN(len, 63);
371 get_buffer(pb, dref->filename, 63);
372 dref->filename[len] = 0;
373 av_log(c->fc, AV_LOG_DEBUG, "filename %s, len %d\n", dref->filename, len);
377 /* read next level up_from_alias/down_to_target */
378 dref->nlvl_from = get_be16(pb);
379 dref->nlvl_to = get_be16(pb);
380 av_log(c->fc, AV_LOG_DEBUG, "nlvl from %d, nlvl to %d\n",
381 dref->nlvl_from, dref->nlvl_to);
385 for (type = 0; type != -1 && url_ftell(pb) < next; ) {
388 av_log(c->fc, AV_LOG_DEBUG, "type %d, len %d\n", type, len);
391 if (type == 2) { // absolute path
393 dref->path = av_mallocz(len+1);
395 return AVERROR(ENOMEM);
396 get_buffer(pb, dref->path, len);
397 if (len > volume_len && !strncmp(dref->path, dref->volume, volume_len)) {
399 memmove(dref->path, dref->path+volume_len, len);
402 for (j = 0; j < len; j++)
403 if (dref->path[j] == ':')
405 av_log(c->fc, AV_LOG_DEBUG, "path %s\n", dref->path);
406 } else if (type == 0) { // directory name
408 dref->dir = av_malloc(len+1);
410 return AVERROR(ENOMEM);
411 get_buffer(pb, dref->dir, len);
413 for (j = 0; j < len; j++)
414 if (dref->dir[j] == ':')
416 av_log(c->fc, AV_LOG_DEBUG, "dir %s\n", dref->dir);
421 url_fseek(pb, next, SEEK_SET);
426 static int mov_read_hdlr(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
432 if (c->fc->nb_streams < 1) // meta before first trak
435 st = c->fc->streams[c->fc->nb_streams-1];
437 get_byte(pb); /* version */
438 get_be24(pb); /* flags */
441 ctype = get_le32(pb);
442 type = get_le32(pb); /* component subtype */
444 dprintf(c->fc, "ctype= %.4s (0x%08x)\n", (char*)&ctype, ctype);
445 dprintf(c->fc, "stype= %.4s\n", (char*)&type);
447 if (type == MKTAG('v','i','d','e'))
448 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
449 else if(type == MKTAG('s','o','u','n'))
450 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
451 else if(type == MKTAG('m','1','a',' '))
452 st->codec->codec_id = CODEC_ID_MP2;
453 else if(type == MKTAG('s','u','b','p'))
454 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
456 get_be32(pb); /* component manufacture */
457 get_be32(pb); /* component flags */
458 get_be32(pb); /* component flags mask */
463 int ff_mov_read_esds(AVFormatContext *fc, ByteIOContext *pb, MOVAtom atom)
468 if (fc->nb_streams < 1)
470 st = fc->streams[fc->nb_streams-1];
472 get_be32(pb); /* version + flags */
473 len = ff_mp4_read_descr(fc, pb, &tag);
474 if (tag == MP4ESDescrTag) {
475 get_be16(pb); /* ID */
476 get_byte(pb); /* priority */
478 get_be16(pb); /* ID */
480 len = ff_mp4_read_descr(fc, pb, &tag);
481 if (tag == MP4DecConfigDescrTag)
482 ff_mp4_read_dec_config_descr(fc, st, pb);
486 static int mov_read_esds(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
488 return ff_mov_read_esds(c->fc, pb, atom);
491 static int mov_read_dac3(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
494 int ac3info, acmod, lfeon;
496 if (c->fc->nb_streams < 1)
498 st = c->fc->streams[c->fc->nb_streams-1];
500 ac3info = get_be24(pb);
501 acmod = (ac3info >> 11) & 0x7;
502 lfeon = (ac3info >> 10) & 0x1;
503 st->codec->channels = ((int[]){2,1,2,3,3,4,4,5})[acmod] + lfeon;
508 static int mov_read_pasp(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
510 const int num = get_be32(pb);
511 const int den = get_be32(pb);
514 if (c->fc->nb_streams < 1)
516 st = c->fc->streams[c->fc->nb_streams-1];
518 if ((st->sample_aspect_ratio.den != 1 || st->sample_aspect_ratio.num) && // default
519 (den != st->sample_aspect_ratio.den || num != st->sample_aspect_ratio.num)) {
520 av_log(c->fc, AV_LOG_WARNING,
521 "sample aspect ratio already set to %d:%d, ignoring 'pasp' atom (%d:%d)\n",
522 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
524 } else if (den != 0) {
525 st->sample_aspect_ratio.num = num;
526 st->sample_aspect_ratio.den = den;
531 /* this atom contains actual media data */
532 static int mov_read_mdat(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
534 if(atom.size == 0) /* wrong one (MP4) */
537 return 0; /* now go for moov */
540 /* read major brand, minor version and compatible brands and store them as metadata */
541 static int mov_read_ftyp(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
545 char minor_ver_str[11]; /* 32 bit integer -> 10 digits + null */
546 char* comp_brands_str;
547 uint8_t type[5] = {0};
549 get_buffer(pb, type, 4);
550 if (strcmp(type, "qt "))
552 av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
553 av_metadata_set2(&c->fc->metadata, "major_brand", type, 0);
554 minor_ver = get_be32(pb); /* minor version */
555 snprintf(minor_ver_str, sizeof(minor_ver_str), "%d", minor_ver);
556 av_metadata_set2(&c->fc->metadata, "minor_version", minor_ver_str, 0);
558 comp_brand_size = atom.size - 8;
559 if (comp_brand_size < 0)
561 comp_brands_str = av_malloc(comp_brand_size + 1); /* Add null terminator */
562 if (!comp_brands_str)
563 return AVERROR(ENOMEM);
564 get_buffer(pb, comp_brands_str, comp_brand_size);
565 comp_brands_str[comp_brand_size] = 0;
566 av_metadata_set2(&c->fc->metadata, "compatible_brands", comp_brands_str, 0);
567 av_freep(&comp_brands_str);
572 /* this atom should contain all header atoms */
573 static int mov_read_moov(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
575 if (mov_read_default(c, pb, atom) < 0)
577 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
578 /* so we don't parse the whole file if over a network */
580 return 0; /* now go for mdat */
583 static int mov_read_moof(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
585 c->fragment.moof_offset = url_ftell(pb) - 8;
586 dprintf(c->fc, "moof offset %llx\n", c->fragment.moof_offset);
587 return mov_read_default(c, pb, atom);
590 static void mov_metadata_creation_time(AVMetadata **metadata, time_t time)
595 time -= 2082844800; /* seconds between 1904-01-01 and Epoch */
598 strftime(buffer, sizeof(buffer), "%Y-%m-%d %H:%M:%S", ptm);
599 av_metadata_set2(metadata, "creation_time", buffer, 0);
603 static int mov_read_mdhd(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
606 MOVStreamContext *sc;
608 char language[4] = {0};
610 time_t creation_time;
612 if (c->fc->nb_streams < 1)
614 st = c->fc->streams[c->fc->nb_streams-1];
617 version = get_byte(pb);
619 return -1; /* unsupported */
621 get_be24(pb); /* flags */
623 creation_time = get_be64(pb);
626 creation_time = get_be32(pb);
627 get_be32(pb); /* modification time */
629 mov_metadata_creation_time(&st->metadata, creation_time);
631 sc->time_scale = get_be32(pb);
632 st->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
634 lang = get_be16(pb); /* language */
635 if (ff_mov_lang_to_iso639(lang, language))
636 av_metadata_set2(&st->metadata, "language", language, 0);
637 get_be16(pb); /* quality */
642 static int mov_read_mvhd(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
644 time_t creation_time;
645 int version = get_byte(pb); /* version */
646 get_be24(pb); /* flags */
649 creation_time = get_be64(pb);
652 creation_time = get_be32(pb);
653 get_be32(pb); /* modification time */
655 mov_metadata_creation_time(&c->fc->metadata, creation_time);
656 c->time_scale = get_be32(pb); /* time scale */
658 dprintf(c->fc, "time scale = %i\n", c->time_scale);
660 c->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
661 get_be32(pb); /* preferred scale */
663 get_be16(pb); /* preferred volume */
665 url_fskip(pb, 10); /* reserved */
667 url_fskip(pb, 36); /* display matrix */
669 get_be32(pb); /* preview time */
670 get_be32(pb); /* preview duration */
671 get_be32(pb); /* poster time */
672 get_be32(pb); /* selection time */
673 get_be32(pb); /* selection duration */
674 get_be32(pb); /* current time */
675 get_be32(pb); /* next track ID */
680 static int mov_read_smi(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
684 if (c->fc->nb_streams < 1)
686 st = c->fc->streams[c->fc->nb_streams-1];
688 if((uint64_t)atom.size > (1<<30))
691 // currently SVQ3 decoder expect full STSD header - so let's fake it
692 // this should be fixed and just SMI header should be passed
693 av_free(st->codec->extradata);
694 st->codec->extradata = av_mallocz(atom.size + 0x5a + FF_INPUT_BUFFER_PADDING_SIZE);
695 if (!st->codec->extradata)
696 return AVERROR(ENOMEM);
697 st->codec->extradata_size = 0x5a + atom.size;
698 memcpy(st->codec->extradata, "SVQ3", 4); // fake
699 get_buffer(pb, st->codec->extradata + 0x5a, atom.size);
700 dprintf(c->fc, "Reading SMI %"PRId64" %s\n", atom.size, st->codec->extradata + 0x5a);
704 static int mov_read_enda(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
709 if (c->fc->nb_streams < 1)
711 st = c->fc->streams[c->fc->nb_streams-1];
713 little_endian = get_be16(pb);
714 dprintf(c->fc, "enda %d\n", little_endian);
715 if (little_endian == 1) {
716 switch (st->codec->codec_id) {
717 case CODEC_ID_PCM_S24BE:
718 st->codec->codec_id = CODEC_ID_PCM_S24LE;
720 case CODEC_ID_PCM_S32BE:
721 st->codec->codec_id = CODEC_ID_PCM_S32LE;
723 case CODEC_ID_PCM_F32BE:
724 st->codec->codec_id = CODEC_ID_PCM_F32LE;
726 case CODEC_ID_PCM_F64BE:
727 st->codec->codec_id = CODEC_ID_PCM_F64LE;
736 /* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
737 static int mov_read_extradata(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
743 if (c->fc->nb_streams < 1) // will happen with jp2 files
745 st= c->fc->streams[c->fc->nb_streams-1];
746 size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
747 if(size > INT_MAX || (uint64_t)atom.size > INT_MAX)
749 buf= av_realloc(st->codec->extradata, size);
752 st->codec->extradata= buf;
753 buf+= st->codec->extradata_size;
754 st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE;
755 AV_WB32( buf , atom.size + 8);
756 AV_WL32( buf + 4, atom.type);
757 get_buffer(pb, buf + 8, atom.size);
761 static int mov_read_wave(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
765 if (c->fc->nb_streams < 1)
767 st = c->fc->streams[c->fc->nb_streams-1];
769 if((uint64_t)atom.size > (1<<30))
772 if (st->codec->codec_id == CODEC_ID_QDM2) {
773 // pass all frma atom to codec, needed at least for QDM2
774 av_free(st->codec->extradata);
775 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
776 if (!st->codec->extradata)
777 return AVERROR(ENOMEM);
778 st->codec->extradata_size = atom.size;
779 get_buffer(pb, st->codec->extradata, atom.size);
780 } else if (atom.size > 8) { /* to read frma, esds atoms */
781 if (mov_read_default(c, pb, atom) < 0)
784 url_fskip(pb, atom.size);
789 * This function reads atom content and puts data in extradata without tag
790 * nor size unlike mov_read_extradata.
792 static int mov_read_glbl(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
796 if (c->fc->nb_streams < 1)
798 st = c->fc->streams[c->fc->nb_streams-1];
800 if((uint64_t)atom.size > (1<<30))
803 av_free(st->codec->extradata);
804 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
805 if (!st->codec->extradata)
806 return AVERROR(ENOMEM);
807 st->codec->extradata_size = atom.size;
808 get_buffer(pb, st->codec->extradata, atom.size);
813 * An strf atom is a BITMAPINFOHEADER struct. This struct is 40 bytes itself,
814 * but can have extradata appended at the end after the 40 bytes belonging
817 static int mov_read_strf(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
821 if (c->fc->nb_streams < 1)
825 st = c->fc->streams[c->fc->nb_streams-1];
827 if((uint64_t)atom.size > (1<<30))
830 av_free(st->codec->extradata);
831 st->codec->extradata = av_mallocz(atom.size - 40 + FF_INPUT_BUFFER_PADDING_SIZE);
832 if (!st->codec->extradata)
833 return AVERROR(ENOMEM);
834 st->codec->extradata_size = atom.size - 40;
836 get_buffer(pb, st->codec->extradata, atom.size - 40);
840 static int mov_read_stco(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
843 MOVStreamContext *sc;
844 unsigned int i, entries;
846 if (c->fc->nb_streams < 1)
848 st = c->fc->streams[c->fc->nb_streams-1];
851 get_byte(pb); /* version */
852 get_be24(pb); /* flags */
854 entries = get_be32(pb);
856 if(entries >= UINT_MAX/sizeof(int64_t))
859 sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
860 if (!sc->chunk_offsets)
861 return AVERROR(ENOMEM);
862 sc->chunk_count = entries;
864 if (atom.type == MKTAG('s','t','c','o'))
865 for(i=0; i<entries; i++)
866 sc->chunk_offsets[i] = get_be32(pb);
867 else if (atom.type == MKTAG('c','o','6','4'))
868 for(i=0; i<entries; i++)
869 sc->chunk_offsets[i] = get_be64(pb);
877 * Compute codec id for 'lpcm' tag.
878 * See CoreAudioTypes and AudioStreamBasicDescription at Apple.
880 enum CodecID ff_mov_get_lpcm_codec_id(int bps, int flags)
882 if (flags & 1) { // floating point
883 if (flags & 2) { // big endian
884 if (bps == 32) return CODEC_ID_PCM_F32BE;
885 else if (bps == 64) return CODEC_ID_PCM_F64BE;
887 if (bps == 32) return CODEC_ID_PCM_F32LE;
888 else if (bps == 64) return CODEC_ID_PCM_F64LE;
894 if (flags & 4) return CODEC_ID_PCM_S8;
895 else return CODEC_ID_PCM_U8;
896 else if (bps == 16) return CODEC_ID_PCM_S16BE;
897 else if (bps == 24) return CODEC_ID_PCM_S24BE;
898 else if (bps == 32) return CODEC_ID_PCM_S32BE;
901 if (flags & 4) return CODEC_ID_PCM_S8;
902 else return CODEC_ID_PCM_U8;
903 else if (bps == 16) return CODEC_ID_PCM_S16LE;
904 else if (bps == 24) return CODEC_ID_PCM_S24LE;
905 else if (bps == 32) return CODEC_ID_PCM_S32LE;
908 return CODEC_ID_NONE;
911 int ff_mov_read_stsd_entries(MOVContext *c, ByteIOContext *pb, int entries)
914 MOVStreamContext *sc;
915 int j, pseudo_stream_id;
917 if (c->fc->nb_streams < 1)
919 st = c->fc->streams[c->fc->nb_streams-1];
922 for(pseudo_stream_id=0; pseudo_stream_id<entries; pseudo_stream_id++) {
923 //Parsing Sample description table
926 MOVAtom a = { AV_RL32("stsd") };
927 int64_t start_pos = url_ftell(pb);
928 int size = get_be32(pb); /* size */
929 uint32_t format = get_le32(pb); /* data format */
932 get_be32(pb); /* reserved */
933 get_be16(pb); /* reserved */
934 dref_id = get_be16(pb);
937 if (st->codec->codec_tag &&
938 st->codec->codec_tag != format &&
939 (c->fc->video_codec_id ? ff_codec_get_id(codec_movvideo_tags, format) != c->fc->video_codec_id
940 : st->codec->codec_tag != MKTAG('j','p','e','g'))
942 /* Multiple fourcc, we skip JPEG. This is not correct, we should
943 * export it as a separate AVStream but this needs a few changes
944 * in the MOV demuxer, patch welcome. */
946 av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n");
947 url_fskip(pb, size - (url_ftell(pb) - start_pos));
950 /* we cannot demux concatenated h264 streams because of different extradata */
951 if (st->codec->codec_tag && st->codec->codec_tag == AV_RL32("avc1"))
953 sc->pseudo_stream_id = st->codec->codec_tag ? -1 : pseudo_stream_id;
954 sc->dref_id= dref_id;
956 st->codec->codec_tag = format;
957 id = ff_codec_get_id(codec_movaudio_tags, format);
958 if (id<=0 && ((format&0xFFFF) == 'm'+('s'<<8) || (format&0xFFFF) == 'T'+('S'<<8)))
959 id = ff_codec_get_id(ff_codec_wav_tags, av_bswap32(format)&0xFFFF);
961 if (st->codec->codec_type != AVMEDIA_TYPE_VIDEO && id > 0) {
962 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
963 } else if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO && /* do not overwrite codec type */
964 format && format != MKTAG('m','p','4','s')) { /* skip old asf mpeg4 tag */
965 id = ff_codec_get_id(codec_movvideo_tags, format);
967 id = ff_codec_get_id(ff_codec_bmp_tags, format);
969 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
970 else if(st->codec->codec_type == AVMEDIA_TYPE_DATA){
971 id = ff_codec_get_id(ff_codec_movsubtitle_tags, format);
973 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
977 dprintf(c->fc, "size=%d 4CC= %c%c%c%c codec_type=%d\n", size,
978 (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff,
979 (format >> 24) & 0xff, st->codec->codec_type);
981 if(st->codec->codec_type==AVMEDIA_TYPE_VIDEO) {
982 unsigned int color_depth, len;
985 st->codec->codec_id = id;
986 get_be16(pb); /* version */
987 get_be16(pb); /* revision level */
988 get_be32(pb); /* vendor */
989 get_be32(pb); /* temporal quality */
990 get_be32(pb); /* spatial quality */
992 st->codec->width = get_be16(pb); /* width */
993 st->codec->height = get_be16(pb); /* height */
995 get_be32(pb); /* horiz resolution */
996 get_be32(pb); /* vert resolution */
997 get_be32(pb); /* data size, always 0 */
998 get_be16(pb); /* frames per samples */
1000 len = get_byte(pb); /* codec name, pascal string */
1003 mov_read_mac_string(c, pb, len, st->codec->codec_name, 32);
1005 url_fskip(pb, 31 - len);
1006 /* codec_tag YV12 triggers an UV swap in rawdec.c */
1007 if (!memcmp(st->codec->codec_name, "Planar Y'CbCr 8-bit 4:2:0", 25))
1008 st->codec->codec_tag=MKTAG('I', '4', '2', '0');
1010 st->codec->bits_per_coded_sample = get_be16(pb); /* depth */
1011 st->codec->color_table_id = get_be16(pb); /* colortable id */
1012 dprintf(c->fc, "depth %d, ctab id %d\n",
1013 st->codec->bits_per_coded_sample, st->codec->color_table_id);
1014 /* figure out the palette situation */
1015 color_depth = st->codec->bits_per_coded_sample & 0x1F;
1016 color_greyscale = st->codec->bits_per_coded_sample & 0x20;
1018 /* if the depth is 2, 4, or 8 bpp, file is palettized */
1019 if ((color_depth == 2) || (color_depth == 4) ||
1020 (color_depth == 8)) {
1021 /* for palette traversal */
1022 unsigned int color_start, color_count, color_end;
1023 unsigned char r, g, b;
1025 st->codec->palctrl = av_malloc(sizeof(*st->codec->palctrl));
1026 if (color_greyscale) {
1027 int color_index, color_dec;
1028 /* compute the greyscale palette */
1029 st->codec->bits_per_coded_sample = color_depth;
1030 color_count = 1 << color_depth;
1032 color_dec = 256 / (color_count - 1);
1033 for (j = 0; j < color_count; j++) {
1034 r = g = b = color_index;
1035 st->codec->palctrl->palette[j] =
1036 (r << 16) | (g << 8) | (b);
1037 color_index -= color_dec;
1038 if (color_index < 0)
1041 } else if (st->codec->color_table_id) {
1042 const uint8_t *color_table;
1043 /* if flag bit 3 is set, use the default palette */
1044 color_count = 1 << color_depth;
1045 if (color_depth == 2)
1046 color_table = ff_qt_default_palette_4;
1047 else if (color_depth == 4)
1048 color_table = ff_qt_default_palette_16;
1050 color_table = ff_qt_default_palette_256;
1052 for (j = 0; j < color_count; j++) {
1053 r = color_table[j * 3 + 0];
1054 g = color_table[j * 3 + 1];
1055 b = color_table[j * 3 + 2];
1056 st->codec->palctrl->palette[j] =
1057 (r << 16) | (g << 8) | (b);
1060 /* load the palette from the file */
1061 color_start = get_be32(pb);
1062 color_count = get_be16(pb);
1063 color_end = get_be16(pb);
1064 if ((color_start <= 255) &&
1065 (color_end <= 255)) {
1066 for (j = color_start; j <= color_end; j++) {
1067 /* each R, G, or B component is 16 bits;
1068 * only use the top 8 bits; skip alpha bytes
1078 st->codec->palctrl->palette[j] =
1079 (r << 16) | (g << 8) | (b);
1083 st->codec->palctrl->palette_changed = 1;
1085 } else if(st->codec->codec_type==AVMEDIA_TYPE_AUDIO) {
1086 int bits_per_sample, flags;
1087 uint16_t version = get_be16(pb);
1089 st->codec->codec_id = id;
1090 get_be16(pb); /* revision level */
1091 get_be32(pb); /* vendor */
1093 st->codec->channels = get_be16(pb); /* channel count */
1094 dprintf(c->fc, "audio channels %d\n", st->codec->channels);
1095 st->codec->bits_per_coded_sample = get_be16(pb); /* sample size */
1097 sc->audio_cid = get_be16(pb);
1098 get_be16(pb); /* packet size = 0 */
1100 st->codec->sample_rate = ((get_be32(pb) >> 16));
1102 //Read QT version 1 fields. In version 0 these do not exist.
1103 dprintf(c->fc, "version =%d, isom =%d\n",version,c->isom);
1106 sc->samples_per_frame = get_be32(pb);
1107 get_be32(pb); /* bytes per packet */
1108 sc->bytes_per_frame = get_be32(pb);
1109 get_be32(pb); /* bytes per sample */
1110 } else if(version==2) {
1111 get_be32(pb); /* sizeof struct only */
1112 st->codec->sample_rate = av_int2dbl(get_be64(pb)); /* float 64 */
1113 st->codec->channels = get_be32(pb);
1114 get_be32(pb); /* always 0x7F000000 */
1115 st->codec->bits_per_coded_sample = get_be32(pb); /* bits per channel if sound is uncompressed */
1116 flags = get_be32(pb); /* lpcm format specific flag */
1117 sc->bytes_per_frame = get_be32(pb); /* bytes per audio packet if constant */
1118 sc->samples_per_frame = get_be32(pb); /* lpcm frames per audio packet if constant */
1119 if (format == MKTAG('l','p','c','m'))
1120 st->codec->codec_id = ff_mov_get_lpcm_codec_id(st->codec->bits_per_coded_sample, flags);
1124 switch (st->codec->codec_id) {
1125 case CODEC_ID_PCM_S8:
1126 case CODEC_ID_PCM_U8:
1127 if (st->codec->bits_per_coded_sample == 16)
1128 st->codec->codec_id = CODEC_ID_PCM_S16BE;
1130 case CODEC_ID_PCM_S16LE:
1131 case CODEC_ID_PCM_S16BE:
1132 if (st->codec->bits_per_coded_sample == 8)
1133 st->codec->codec_id = CODEC_ID_PCM_S8;
1134 else if (st->codec->bits_per_coded_sample == 24)
1135 st->codec->codec_id =
1136 st->codec->codec_id == CODEC_ID_PCM_S16BE ?
1137 CODEC_ID_PCM_S24BE : CODEC_ID_PCM_S24LE;
1139 /* set values for old format before stsd version 1 appeared */
1140 case CODEC_ID_MACE3:
1141 sc->samples_per_frame = 6;
1142 sc->bytes_per_frame = 2*st->codec->channels;
1144 case CODEC_ID_MACE6:
1145 sc->samples_per_frame = 6;
1146 sc->bytes_per_frame = 1*st->codec->channels;
1148 case CODEC_ID_ADPCM_IMA_QT:
1149 sc->samples_per_frame = 64;
1150 sc->bytes_per_frame = 34*st->codec->channels;
1153 sc->samples_per_frame = 160;
1154 sc->bytes_per_frame = 33;
1160 bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
1161 if (bits_per_sample) {
1162 st->codec->bits_per_coded_sample = bits_per_sample;
1163 sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
1165 } else if(st->codec->codec_type==AVMEDIA_TYPE_SUBTITLE){
1166 // ttxt stsd contains display flags, justification, background
1167 // color, fonts, and default styles, so fake an atom to read it
1168 MOVAtom fake_atom = { .size = size - (url_ftell(pb) - start_pos) };
1169 if (format != AV_RL32("mp4s")) // mp4s contains a regular esds atom
1170 mov_read_glbl(c, pb, fake_atom);
1171 st->codec->codec_id= id;
1172 st->codec->width = sc->width;
1173 st->codec->height = sc->height;
1175 /* other codec type, just skip (rtp, mp4s, tmcd ...) */
1176 url_fskip(pb, size - (url_ftell(pb) - start_pos));
1178 /* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */
1179 a.size = size - (url_ftell(pb) - start_pos);
1181 if (mov_read_default(c, pb, a) < 0)
1183 } else if (a.size > 0)
1184 url_fskip(pb, a.size);
1187 if(st->codec->codec_type==AVMEDIA_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1)
1188 st->codec->sample_rate= sc->time_scale;
1190 /* special codec parameters handling */
1191 switch (st->codec->codec_id) {
1192 #if CONFIG_DV_DEMUXER
1193 case CODEC_ID_DVAUDIO:
1194 c->dv_fctx = avformat_alloc_context();
1195 c->dv_demux = dv_init_demux(c->dv_fctx);
1197 av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
1200 sc->dv_audio_container = 1;
1201 st->codec->codec_id = CODEC_ID_PCM_S16LE;
1204 /* no ifdef since parameters are always those */
1205 case CODEC_ID_QCELP:
1206 // force sample rate for qcelp when not stored in mov
1207 if (st->codec->codec_tag != MKTAG('Q','c','l','p'))
1208 st->codec->sample_rate = 8000;
1209 st->codec->frame_size= 160;
1210 st->codec->channels= 1; /* really needed */
1212 case CODEC_ID_AMR_NB:
1213 case CODEC_ID_AMR_WB:
1214 st->codec->frame_size= sc->samples_per_frame;
1215 st->codec->channels= 1; /* really needed */
1216 /* force sample rate for amr, stsd in 3gp does not store sample rate */
1217 if (st->codec->codec_id == CODEC_ID_AMR_NB)
1218 st->codec->sample_rate = 8000;
1219 else if (st->codec->codec_id == CODEC_ID_AMR_WB)
1220 st->codec->sample_rate = 16000;
1224 st->codec->codec_type = AVMEDIA_TYPE_AUDIO; /* force type after stsd for m1a hdlr */
1225 st->need_parsing = AVSTREAM_PARSE_FULL;
1228 case CODEC_ID_ADPCM_MS:
1229 case CODEC_ID_ADPCM_IMA_WAV:
1230 st->codec->block_align = sc->bytes_per_frame;
1233 if (st->codec->extradata_size == 36) {
1234 st->codec->frame_size = AV_RB32(st->codec->extradata+12);
1235 st->codec->channels = AV_RB8 (st->codec->extradata+21);
1236 st->codec->sample_rate = AV_RB32(st->codec->extradata+32);
1246 static int mov_read_stsd(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
1250 get_byte(pb); /* version */
1251 get_be24(pb); /* flags */
1252 entries = get_be32(pb);
1254 return ff_mov_read_stsd_entries(c, pb, entries);
1257 static int mov_read_stsc(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
1260 MOVStreamContext *sc;
1261 unsigned int i, entries;
1263 if (c->fc->nb_streams < 1)
1265 st = c->fc->streams[c->fc->nb_streams-1];
1268 get_byte(pb); /* version */
1269 get_be24(pb); /* flags */
1271 entries = get_be32(pb);
1273 dprintf(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
1275 if(entries >= UINT_MAX / sizeof(*sc->stsc_data))
1277 sc->stsc_data = av_malloc(entries * sizeof(*sc->stsc_data));
1279 return AVERROR(ENOMEM);
1280 sc->stsc_count = entries;
1282 for(i=0; i<entries; i++) {
1283 sc->stsc_data[i].first = get_be32(pb);
1284 sc->stsc_data[i].count = get_be32(pb);
1285 sc->stsc_data[i].id = get_be32(pb);
1290 static int mov_read_stps(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
1293 MOVStreamContext *sc;
1294 unsigned i, entries;
1296 if (c->fc->nb_streams < 1)
1298 st = c->fc->streams[c->fc->nb_streams-1];
1301 get_be32(pb); // version + flags
1303 entries = get_be32(pb);
1304 if (entries >= UINT_MAX / sizeof(*sc->stps_data))
1306 sc->stps_data = av_malloc(entries * sizeof(*sc->stps_data));
1308 return AVERROR(ENOMEM);
1309 sc->stps_count = entries;
1311 for (i = 0; i < entries; i++) {
1312 sc->stps_data[i] = get_be32(pb);
1313 //dprintf(c->fc, "stps %d\n", sc->stps_data[i]);
1319 static int mov_read_stss(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
1322 MOVStreamContext *sc;
1323 unsigned int i, entries;
1325 if (c->fc->nb_streams < 1)
1327 st = c->fc->streams[c->fc->nb_streams-1];
1330 get_byte(pb); /* version */
1331 get_be24(pb); /* flags */
1333 entries = get_be32(pb);
1335 dprintf(c->fc, "keyframe_count = %d\n", entries);
1337 if(entries >= UINT_MAX / sizeof(int))
1339 sc->keyframes = av_malloc(entries * sizeof(int));
1341 return AVERROR(ENOMEM);
1342 sc->keyframe_count = entries;
1344 for(i=0; i<entries; i++) {
1345 sc->keyframes[i] = get_be32(pb);
1346 //dprintf(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
1351 static int mov_read_stsz(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
1354 MOVStreamContext *sc;
1355 unsigned int i, entries, sample_size, field_size, num_bytes;
1359 if (c->fc->nb_streams < 1)
1361 st = c->fc->streams[c->fc->nb_streams-1];
1364 get_byte(pb); /* version */
1365 get_be24(pb); /* flags */
1367 if (atom.type == MKTAG('s','t','s','z')) {
1368 sample_size = get_be32(pb);
1369 if (!sc->sample_size) /* do not overwrite value computed in stsd */
1370 sc->sample_size = sample_size;
1374 get_be24(pb); /* reserved */
1375 field_size = get_byte(pb);
1377 entries = get_be32(pb);
1379 dprintf(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, entries);
1381 sc->sample_count = entries;
1385 if (field_size != 4 && field_size != 8 && field_size != 16 && field_size != 32) {
1386 av_log(c->fc, AV_LOG_ERROR, "Invalid sample field size %d\n", field_size);
1390 if (entries >= UINT_MAX / sizeof(int) || entries >= (UINT_MAX - 4) / field_size)
1392 sc->sample_sizes = av_malloc(entries * sizeof(int));
1393 if (!sc->sample_sizes)
1394 return AVERROR(ENOMEM);
1396 num_bytes = (entries*field_size+4)>>3;
1398 buf = av_malloc(num_bytes+FF_INPUT_BUFFER_PADDING_SIZE);
1400 av_freep(&sc->sample_sizes);
1401 return AVERROR(ENOMEM);
1404 if (get_buffer(pb, buf, num_bytes) < num_bytes) {
1405 av_freep(&sc->sample_sizes);
1410 init_get_bits(&gb, buf, 8*num_bytes);
1412 for(i=0; i<entries; i++)
1413 sc->sample_sizes[i] = get_bits_long(&gb, field_size);
1419 static int mov_read_stts(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
1422 MOVStreamContext *sc;
1423 unsigned int i, entries;
1425 int64_t total_sample_count=0;
1427 if (c->fc->nb_streams < 1)
1429 st = c->fc->streams[c->fc->nb_streams-1];
1432 get_byte(pb); /* version */
1433 get_be24(pb); /* flags */
1434 entries = get_be32(pb);
1436 dprintf(c->fc, "track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries);
1438 if(entries >= UINT_MAX / sizeof(*sc->stts_data))
1440 sc->stts_data = av_malloc(entries * sizeof(*sc->stts_data));
1442 return AVERROR(ENOMEM);
1443 sc->stts_count = entries;
1445 for(i=0; i<entries; i++) {
1446 int sample_duration;
1449 sample_count=get_be32(pb);
1450 sample_duration = get_be32(pb);
1451 sc->stts_data[i].count= sample_count;
1452 sc->stts_data[i].duration= sample_duration;
1454 dprintf(c->fc, "sample_count=%d, sample_duration=%d\n",sample_count,sample_duration);
1456 duration+=(int64_t)sample_duration*sample_count;
1457 total_sample_count+=sample_count;
1460 st->nb_frames= total_sample_count;
1462 st->duration= duration;
1466 static int mov_read_ctts(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
1469 MOVStreamContext *sc;
1470 unsigned int i, entries;
1472 if (c->fc->nb_streams < 1)
1474 st = c->fc->streams[c->fc->nb_streams-1];
1477 get_byte(pb); /* version */
1478 get_be24(pb); /* flags */
1479 entries = get_be32(pb);
1481 dprintf(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
1483 if(entries >= UINT_MAX / sizeof(*sc->ctts_data))
1485 sc->ctts_data = av_malloc(entries * sizeof(*sc->ctts_data));
1487 return AVERROR(ENOMEM);
1488 sc->ctts_count = entries;
1490 for(i=0; i<entries; i++) {
1491 int count =get_be32(pb);
1492 int duration =get_be32(pb);
1494 sc->ctts_data[i].count = count;
1495 sc->ctts_data[i].duration= duration;
1497 sc->dts_shift = FFMAX(sc->dts_shift, -duration);
1500 dprintf(c->fc, "dts shift %d\n", sc->dts_shift);
1505 static void mov_build_index(MOVContext *mov, AVStream *st)
1507 MOVStreamContext *sc = st->priv_data;
1508 int64_t current_offset;
1509 int64_t current_dts = 0;
1510 unsigned int stts_index = 0;
1511 unsigned int stsc_index = 0;
1512 unsigned int stss_index = 0;
1513 unsigned int stps_index = 0;
1515 uint64_t stream_size = 0;
1517 /* adjust first dts according to edit list */
1518 if (sc->time_offset && mov->time_scale > 0) {
1519 int rescaled = sc->time_offset < 0 ? av_rescale(sc->time_offset, sc->time_scale, mov->time_scale) : sc->time_offset;
1520 current_dts = -rescaled;
1521 if (sc->ctts_data && sc->stts_data &&
1522 sc->ctts_data[0].duration / sc->stts_data[0].duration > 16) {
1523 /* more than 16 frames delay, dts are likely wrong
1524 this happens with files created by iMovie */
1526 st->codec->has_b_frames = 1;
1530 /* only use old uncompressed audio chunk demuxing when stts specifies it */
1531 if (!(st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
1532 sc->stts_count == 1 && sc->stts_data[0].duration == 1)) {
1533 unsigned int current_sample = 0;
1534 unsigned int stts_sample = 0;
1535 unsigned int sample_size;
1536 unsigned int distance = 0;
1537 int key_off = sc->keyframes && sc->keyframes[0] == 1;
1539 current_dts -= sc->dts_shift;
1541 if (sc->sample_count >= UINT_MAX / sizeof(*st->index_entries))
1543 st->index_entries = av_malloc(sc->sample_count*sizeof(*st->index_entries));
1544 if (!st->index_entries)
1546 st->index_entries_allocated_size = sc->sample_count*sizeof(*st->index_entries);
1548 for (i = 0; i < sc->chunk_count; i++) {
1549 current_offset = sc->chunk_offsets[i];
1550 if (stsc_index + 1 < sc->stsc_count &&
1551 i + 1 == sc->stsc_data[stsc_index + 1].first)
1553 for (j = 0; j < sc->stsc_data[stsc_index].count; j++) {
1555 if (current_sample >= sc->sample_count) {
1556 av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
1560 if (!sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index]) {
1562 if (stss_index + 1 < sc->keyframe_count)
1564 } else if (sc->stps_count && current_sample+key_off == sc->stps_data[stps_index]) {
1566 if (stps_index + 1 < sc->stps_count)
1571 sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
1572 if(sc->pseudo_stream_id == -1 ||
1573 sc->stsc_data[stsc_index].id - 1 == sc->pseudo_stream_id) {
1574 AVIndexEntry *e = &st->index_entries[st->nb_index_entries++];
1575 e->pos = current_offset;
1576 e->timestamp = current_dts;
1577 e->size = sample_size;
1578 e->min_distance = distance;
1579 e->flags = keyframe ? AVINDEX_KEYFRAME : 0;
1580 dprintf(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
1581 "size %d, distance %d, keyframe %d\n", st->index, current_sample,
1582 current_offset, current_dts, sample_size, distance, keyframe);
1585 current_offset += sample_size;
1586 stream_size += sample_size;
1587 current_dts += sc->stts_data[stts_index].duration;
1591 if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
1597 if (st->duration > 0)
1598 st->codec->bit_rate = stream_size*8*sc->time_scale/st->duration;
1600 unsigned chunk_samples, total = 0;
1602 // compute total chunk count
1603 for (i = 0; i < sc->stsc_count; i++) {
1604 unsigned count, chunk_count;
1606 chunk_samples = sc->stsc_data[i].count;
1607 if (sc->samples_per_frame && chunk_samples % sc->samples_per_frame) {
1608 av_log(mov->fc, AV_LOG_ERROR, "error unaligned chunk\n");
1612 if (sc->samples_per_frame >= 160) { // gsm
1613 count = chunk_samples / sc->samples_per_frame;
1614 } else if (sc->samples_per_frame > 1) {
1615 unsigned samples = (1024/sc->samples_per_frame)*sc->samples_per_frame;
1616 count = (chunk_samples+samples-1) / samples;
1618 count = (chunk_samples+1023) / 1024;
1621 if (i < sc->stsc_count - 1)
1622 chunk_count = sc->stsc_data[i+1].first - sc->stsc_data[i].first;
1624 chunk_count = sc->chunk_count - (sc->stsc_data[i].first - 1);
1625 total += chunk_count * count;
1628 dprintf(mov->fc, "chunk count %d\n", total);
1629 if (total >= UINT_MAX / sizeof(*st->index_entries))
1631 st->index_entries = av_malloc(total*sizeof(*st->index_entries));
1632 if (!st->index_entries)
1634 st->index_entries_allocated_size = total*sizeof(*st->index_entries);
1637 for (i = 0; i < sc->chunk_count; i++) {
1638 current_offset = sc->chunk_offsets[i];
1639 if (stsc_index + 1 < sc->stsc_count &&
1640 i + 1 == sc->stsc_data[stsc_index + 1].first)
1642 chunk_samples = sc->stsc_data[stsc_index].count;
1644 while (chunk_samples > 0) {
1646 unsigned size, samples;
1648 if (sc->samples_per_frame >= 160) { // gsm
1649 samples = sc->samples_per_frame;
1650 size = sc->bytes_per_frame;
1652 if (sc->samples_per_frame > 1) {
1653 samples = FFMIN((1024 / sc->samples_per_frame)*
1654 sc->samples_per_frame, chunk_samples);
1655 size = (samples / sc->samples_per_frame) * sc->bytes_per_frame;
1657 samples = FFMIN(1024, chunk_samples);
1658 size = samples * sc->sample_size;
1662 if (st->nb_index_entries >= total) {
1663 av_log(mov->fc, AV_LOG_ERROR, "wrong chunk count %d\n", total);
1666 e = &st->index_entries[st->nb_index_entries++];
1667 e->pos = current_offset;
1668 e->timestamp = current_dts;
1670 e->min_distance = 0;
1671 e->flags = AVINDEX_KEYFRAME;
1672 dprintf(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", "
1673 "size %d, duration %d\n", st->index, i, current_offset, current_dts,
1676 current_offset += size;
1677 current_dts += samples;
1678 chunk_samples -= samples;
1684 static int mov_open_dref(ByteIOContext **pb, char *src, MOVDref *ref)
1686 /* try relative path, we do not try the absolute because it can leak information about our
1687 system to an attacker */
1688 if (ref->nlvl_to > 0 && ref->nlvl_from > 0) {
1689 char filename[1024];
1693 /* find a source dir */
1694 src_path = strrchr(src, '/');
1700 /* find a next level down to target */
1701 for (i = 0, l = strlen(ref->path) - 1; l >= 0; l--)
1702 if (ref->path[l] == '/') {
1703 if (i == ref->nlvl_to - 1)
1709 /* compose filename if next level down to target was found */
1710 if (i == ref->nlvl_to - 1 && src_path - src < sizeof(filename)) {
1711 memcpy(filename, src, src_path - src);
1712 filename[src_path - src] = 0;
1714 for (i = 1; i < ref->nlvl_from; i++)
1715 av_strlcat(filename, "../", 1024);
1717 av_strlcat(filename, ref->path + l + 1, 1024);
1719 if (!url_fopen(pb, filename, URL_RDONLY))
1724 return AVERROR(ENOENT);
1727 static int mov_read_trak(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
1730 MOVStreamContext *sc;
1733 st = av_new_stream(c->fc, c->fc->nb_streams);
1734 if (!st) return AVERROR(ENOMEM);
1735 sc = av_mallocz(sizeof(MOVStreamContext));
1736 if (!sc) return AVERROR(ENOMEM);
1739 st->codec->codec_type = AVMEDIA_TYPE_DATA;
1740 sc->ffindex = st->index;
1742 if ((ret = mov_read_default(c, pb, atom)) < 0)
1746 if (sc->chunk_count && (!sc->stts_count || !sc->stsc_count ||
1747 (!sc->sample_size && !sc->sample_count))) {
1748 av_log(c->fc, AV_LOG_ERROR, "stream %d, missing mandatory atoms, broken header\n",
1753 if (sc->time_scale <= 0) {
1754 av_log(c->fc, AV_LOG_WARNING, "stream %d, timescale not set\n", st->index);
1755 sc->time_scale = c->time_scale;
1756 if (sc->time_scale <= 0)
1760 av_set_pts_info(st, 64, 1, sc->time_scale);
1762 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
1763 !st->codec->frame_size && sc->stts_count == 1) {
1764 st->codec->frame_size = av_rescale(sc->stts_data[0].duration,
1765 st->codec->sample_rate, sc->time_scale);
1766 dprintf(c->fc, "frame size %d\n", st->codec->frame_size);
1769 mov_build_index(c, st);
1771 if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) {
1772 MOVDref *dref = &sc->drefs[sc->dref_id - 1];
1773 if (mov_open_dref(&sc->pb, c->fc->filename, dref) < 0)
1774 av_log(c->fc, AV_LOG_ERROR,
1775 "stream %d, error opening alias: path='%s', dir='%s', "
1776 "filename='%s', volume='%s', nlvl_from=%d, nlvl_to=%d\n",
1777 st->index, dref->path, dref->dir, dref->filename,
1778 dref->volume, dref->nlvl_from, dref->nlvl_to);
1782 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1783 if (!st->sample_aspect_ratio.num &&
1784 (st->codec->width != sc->width || st->codec->height != sc->height)) {
1785 st->sample_aspect_ratio = av_d2q(((double)st->codec->height * sc->width) /
1786 ((double)st->codec->width * sc->height), INT_MAX);
1789 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
1790 sc->time_scale*st->nb_frames, st->duration, INT_MAX);
1792 if (sc->stts_count == 1 || (sc->stts_count == 2 && sc->stts_data[1].count == 1))
1793 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den,
1794 sc->time_scale, sc->stts_data[0].duration, INT_MAX);
1797 switch (st->codec->codec_id) {
1798 #if CONFIG_H261_DECODER
1801 #if CONFIG_H263_DECODER
1804 #if CONFIG_H264_DECODER
1807 #if CONFIG_MPEG4_DECODER
1808 case CODEC_ID_MPEG4:
1810 st->codec->width = 0; /* let decoder init width/height */
1811 st->codec->height= 0;
1815 /* Do not need those anymore. */
1816 av_freep(&sc->chunk_offsets);
1817 av_freep(&sc->stsc_data);
1818 av_freep(&sc->sample_sizes);
1819 av_freep(&sc->keyframes);
1820 av_freep(&sc->stts_data);
1821 av_freep(&sc->stps_data);
1826 static int mov_read_ilst(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
1829 c->itunes_metadata = 1;
1830 ret = mov_read_default(c, pb, atom);
1831 c->itunes_metadata = 0;
1835 static int mov_read_meta(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
1837 while (atom.size > 8) {
1838 uint32_t tag = get_le32(pb);
1840 if (tag == MKTAG('h','d','l','r')) {
1841 url_fseek(pb, -8, SEEK_CUR);
1843 return mov_read_default(c, pb, atom);
1849 static int mov_read_tkhd(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
1854 int64_t disp_transform[2];
1855 int display_matrix[3][2];
1857 MOVStreamContext *sc;
1860 if (c->fc->nb_streams < 1)
1862 st = c->fc->streams[c->fc->nb_streams-1];
1865 version = get_byte(pb);
1866 get_be24(pb); /* flags */
1868 MOV_TRACK_ENABLED 0x0001
1869 MOV_TRACK_IN_MOVIE 0x0002
1870 MOV_TRACK_IN_PREVIEW 0x0004
1871 MOV_TRACK_IN_POSTER 0x0008
1878 get_be32(pb); /* creation time */
1879 get_be32(pb); /* modification time */
1881 st->id = (int)get_be32(pb); /* track id (NOT 0 !)*/
1882 get_be32(pb); /* reserved */
1884 /* highlevel (considering edits) duration in movie timebase */
1885 (version == 1) ? get_be64(pb) : get_be32(pb);
1886 get_be32(pb); /* reserved */
1887 get_be32(pb); /* reserved */
1889 get_be16(pb); /* layer */
1890 get_be16(pb); /* alternate group */
1891 get_be16(pb); /* volume */
1892 get_be16(pb); /* reserved */
1894 //read in the display matrix (outlined in ISO 14496-12, Section 6.2.2)
1895 // they're kept in fixed point format through all calculations
1896 // ignore u,v,z b/c we don't need the scale factor to calc aspect ratio
1897 for (i = 0; i < 3; i++) {
1898 display_matrix[i][0] = get_be32(pb); // 16.16 fixed point
1899 display_matrix[i][1] = get_be32(pb); // 16.16 fixed point
1900 get_be32(pb); // 2.30 fixed point (not used)
1903 width = get_be32(pb); // 16.16 fixed point track width
1904 height = get_be32(pb); // 16.16 fixed point track height
1905 sc->width = width >> 16;
1906 sc->height = height >> 16;
1908 // transform the display width/height according to the matrix
1909 // skip this if the display matrix is the default identity matrix
1910 // or if it is rotating the picture, ex iPhone 3GS
1911 // to keep the same scale, use [width height 1<<16]
1912 if (width && height &&
1913 ((display_matrix[0][0] != 65536 ||
1914 display_matrix[1][1] != 65536) &&
1915 !display_matrix[0][1] &&
1916 !display_matrix[1][0] &&
1917 !display_matrix[2][0] && !display_matrix[2][1])) {
1918 for (i = 0; i < 2; i++)
1920 (int64_t) width * display_matrix[0][i] +
1921 (int64_t) height * display_matrix[1][i] +
1922 ((int64_t) display_matrix[2][i] << 16);
1924 //sample aspect ratio is new width/height divided by old width/height
1925 st->sample_aspect_ratio = av_d2q(
1926 ((double) disp_transform[0] * height) /
1927 ((double) disp_transform[1] * width), INT_MAX);
1932 static int mov_read_tfhd(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
1934 MOVFragment *frag = &c->fragment;
1935 MOVTrackExt *trex = NULL;
1936 int flags, track_id, i;
1938 get_byte(pb); /* version */
1939 flags = get_be24(pb);
1941 track_id = get_be32(pb);
1944 frag->track_id = track_id;
1945 for (i = 0; i < c->trex_count; i++)
1946 if (c->trex_data[i].track_id == frag->track_id) {
1947 trex = &c->trex_data[i];
1951 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding trex\n");
1955 if (flags & 0x01) frag->base_data_offset = get_be64(pb);
1956 else frag->base_data_offset = frag->moof_offset;
1957 if (flags & 0x02) frag->stsd_id = get_be32(pb);
1958 else frag->stsd_id = trex->stsd_id;
1960 frag->duration = flags & 0x08 ? get_be32(pb) : trex->duration;
1961 frag->size = flags & 0x10 ? get_be32(pb) : trex->size;
1962 frag->flags = flags & 0x20 ? get_be32(pb) : trex->flags;
1963 dprintf(c->fc, "frag flags 0x%x\n", frag->flags);
1967 static int mov_read_chap(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
1969 c->chapter_track = get_be32(pb);
1973 static int mov_read_trex(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
1977 if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data))
1979 trex = av_realloc(c->trex_data, (c->trex_count+1)*sizeof(*c->trex_data));
1981 return AVERROR(ENOMEM);
1982 c->trex_data = trex;
1983 trex = &c->trex_data[c->trex_count++];
1984 get_byte(pb); /* version */
1985 get_be24(pb); /* flags */
1986 trex->track_id = get_be32(pb);
1987 trex->stsd_id = get_be32(pb);
1988 trex->duration = get_be32(pb);
1989 trex->size = get_be32(pb);
1990 trex->flags = get_be32(pb);
1994 static int mov_read_trun(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
1996 MOVFragment *frag = &c->fragment;
1997 AVStream *st = NULL;
1998 MOVStreamContext *sc;
2001 int data_offset = 0;
2002 unsigned entries, first_sample_flags = frag->flags;
2003 int flags, distance, i;
2005 for (i = 0; i < c->fc->nb_streams; i++) {
2006 if (c->fc->streams[i]->id == frag->track_id) {
2007 st = c->fc->streams[i];
2012 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id);
2016 if (sc->pseudo_stream_id+1 != frag->stsd_id)
2018 get_byte(pb); /* version */
2019 flags = get_be24(pb);
2020 entries = get_be32(pb);
2021 dprintf(c->fc, "flags 0x%x entries %d\n", flags, entries);
2022 if (flags & 0x001) data_offset = get_be32(pb);
2023 if (flags & 0x004) first_sample_flags = get_be32(pb);
2024 if (flags & 0x800) {
2026 if ((uint64_t)entries+sc->ctts_count >= UINT_MAX/sizeof(*sc->ctts_data))
2028 ctts_data = av_realloc(sc->ctts_data,
2029 (entries+sc->ctts_count)*sizeof(*sc->ctts_data));
2031 return AVERROR(ENOMEM);
2032 sc->ctts_data = ctts_data;
2035 offset = frag->base_data_offset + data_offset;
2037 dprintf(c->fc, "first sample flags 0x%x\n", first_sample_flags);
2038 for (i = 0; i < entries; i++) {
2039 unsigned sample_size = frag->size;
2040 int sample_flags = i ? frag->flags : first_sample_flags;
2041 unsigned sample_duration = frag->duration;
2044 if (flags & 0x100) sample_duration = get_be32(pb);
2045 if (flags & 0x200) sample_size = get_be32(pb);
2046 if (flags & 0x400) sample_flags = get_be32(pb);
2047 if (flags & 0x800) {
2048 sc->ctts_data[sc->ctts_count].count = 1;
2049 sc->ctts_data[sc->ctts_count].duration = get_be32(pb);
2052 if ((keyframe = st->codec->codec_type == AVMEDIA_TYPE_AUDIO ||
2053 (flags & 0x004 && !i && !sample_flags) || sample_flags & 0x2000000))
2055 av_add_index_entry(st, offset, dts, sample_size, distance,
2056 keyframe ? AVINDEX_KEYFRAME : 0);
2057 dprintf(c->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
2058 "size %d, distance %d, keyframe %d\n", st->index, sc->sample_count+i,
2059 offset, dts, sample_size, distance, keyframe);
2061 dts += sample_duration;
2062 offset += sample_size;
2064 frag->moof_offset = offset;
2069 /* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
2070 /* like the files created with Adobe Premiere 5.0, for samples see */
2071 /* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
2072 static int mov_read_wide(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
2077 return 0; /* continue */
2078 if (get_be32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
2079 url_fskip(pb, atom.size - 4);
2082 atom.type = get_le32(pb);
2084 if (atom.type != MKTAG('m','d','a','t')) {
2085 url_fskip(pb, atom.size);
2088 err = mov_read_mdat(c, pb, atom);
2092 static int mov_read_cmov(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
2097 uint8_t *moov_data; /* uncompressed data */
2098 long cmov_len, moov_len;
2101 get_be32(pb); /* dcom atom */
2102 if (get_le32(pb) != MKTAG('d','c','o','m'))
2104 if (get_le32(pb) != MKTAG('z','l','i','b')) {
2105 av_log(c->fc, AV_LOG_ERROR, "unknown compression for cmov atom !");
2108 get_be32(pb); /* cmvd atom */
2109 if (get_le32(pb) != MKTAG('c','m','v','d'))
2111 moov_len = get_be32(pb); /* uncompressed size */
2112 cmov_len = atom.size - 6 * 4;
2114 cmov_data = av_malloc(cmov_len);
2116 return AVERROR(ENOMEM);
2117 moov_data = av_malloc(moov_len);
2120 return AVERROR(ENOMEM);
2122 get_buffer(pb, cmov_data, cmov_len);
2123 if(uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
2124 goto free_and_return;
2125 if(init_put_byte(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
2126 goto free_and_return;
2127 atom.type = MKTAG('m','o','o','v');
2128 atom.size = moov_len;
2130 // { int fd = open("/tmp/uncompheader.mov", O_WRONLY | O_CREAT); write(fd, moov_data, moov_len); close(fd); }
2132 ret = mov_read_default(c, &ctx, atom);
2138 av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
2143 /* edit list atom */
2144 static int mov_read_elst(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
2146 MOVStreamContext *sc;
2149 if (c->fc->nb_streams < 1)
2151 sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
2153 get_byte(pb); /* version */
2154 get_be24(pb); /* flags */
2155 edit_count = get_be32(pb); /* entries */
2157 if((uint64_t)edit_count*12+8 > atom.size)
2160 for(i=0; i<edit_count; i++){
2162 int duration = get_be32(pb); /* Track duration */
2163 time = get_be32(pb); /* Media time */
2164 get_be32(pb); /* Media rate */
2165 if (i == 0 && time >= -1) {
2166 sc->time_offset = time != -1 ? time : -duration;
2171 av_log(c->fc, AV_LOG_WARNING, "multiple edit list entries, "
2172 "a/v desync might occur, patch welcome\n");
2174 dprintf(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, edit_count);
2178 static const MOVParseTableEntry mov_default_parse_table[] = {
2179 { MKTAG('a','v','s','s'), mov_read_extradata },
2180 { MKTAG('c','h','p','l'), mov_read_chpl },
2181 { MKTAG('c','o','6','4'), mov_read_stco },
2182 { MKTAG('c','t','t','s'), mov_read_ctts }, /* composition time to sample */
2183 { MKTAG('d','i','n','f'), mov_read_default },
2184 { MKTAG('d','r','e','f'), mov_read_dref },
2185 { MKTAG('e','d','t','s'), mov_read_default },
2186 { MKTAG('e','l','s','t'), mov_read_elst },
2187 { MKTAG('e','n','d','a'), mov_read_enda },
2188 { MKTAG('f','i','e','l'), mov_read_extradata },
2189 { MKTAG('f','t','y','p'), mov_read_ftyp },
2190 { MKTAG('g','l','b','l'), mov_read_glbl },
2191 { MKTAG('h','d','l','r'), mov_read_hdlr },
2192 { MKTAG('i','l','s','t'), mov_read_ilst },
2193 { MKTAG('j','p','2','h'), mov_read_extradata },
2194 { MKTAG('m','d','a','t'), mov_read_mdat },
2195 { MKTAG('m','d','h','d'), mov_read_mdhd },
2196 { MKTAG('m','d','i','a'), mov_read_default },
2197 { MKTAG('m','e','t','a'), mov_read_meta },
2198 { MKTAG('m','i','n','f'), mov_read_default },
2199 { MKTAG('m','o','o','f'), mov_read_moof },
2200 { MKTAG('m','o','o','v'), mov_read_moov },
2201 { MKTAG('m','v','e','x'), mov_read_default },
2202 { MKTAG('m','v','h','d'), mov_read_mvhd },
2203 { MKTAG('S','M','I',' '), mov_read_smi }, /* Sorenson extension ??? */
2204 { MKTAG('a','l','a','c'), mov_read_extradata }, /* alac specific atom */
2205 { MKTAG('a','v','c','C'), mov_read_glbl },
2206 { MKTAG('p','a','s','p'), mov_read_pasp },
2207 { MKTAG('s','t','b','l'), mov_read_default },
2208 { MKTAG('s','t','c','o'), mov_read_stco },
2209 { MKTAG('s','t','p','s'), mov_read_stps },
2210 { MKTAG('s','t','r','f'), mov_read_strf },
2211 { MKTAG('s','t','s','c'), mov_read_stsc },
2212 { MKTAG('s','t','s','d'), mov_read_stsd }, /* sample description */
2213 { MKTAG('s','t','s','s'), mov_read_stss }, /* sync sample */
2214 { MKTAG('s','t','s','z'), mov_read_stsz }, /* sample size */
2215 { MKTAG('s','t','t','s'), mov_read_stts },
2216 { MKTAG('s','t','z','2'), mov_read_stsz }, /* compact sample size */
2217 { MKTAG('t','k','h','d'), mov_read_tkhd }, /* track header */
2218 { MKTAG('t','f','h','d'), mov_read_tfhd }, /* track fragment header */
2219 { MKTAG('t','r','a','k'), mov_read_trak },
2220 { MKTAG('t','r','a','f'), mov_read_default },
2221 { MKTAG('t','r','e','f'), mov_read_default },
2222 { MKTAG('c','h','a','p'), mov_read_chap },
2223 { MKTAG('t','r','e','x'), mov_read_trex },
2224 { MKTAG('t','r','u','n'), mov_read_trun },
2225 { MKTAG('u','d','t','a'), mov_read_default },
2226 { MKTAG('w','a','v','e'), mov_read_wave },
2227 { MKTAG('e','s','d','s'), mov_read_esds },
2228 { MKTAG('d','a','c','3'), mov_read_dac3 }, /* AC-3 info */
2229 { MKTAG('w','i','d','e'), mov_read_wide }, /* place holder */
2230 { MKTAG('c','m','o','v'), mov_read_cmov },
2234 static int mov_probe(AVProbeData *p)
2236 unsigned int offset;
2240 /* check file header */
2243 /* ignore invalid offset */
2244 if ((offset + 8) > (unsigned int)p->buf_size)
2246 tag = AV_RL32(p->buf + offset + 4);
2248 /* check for obvious tags */
2249 case MKTAG('j','P',' ',' '): /* jpeg 2000 signature */
2250 case MKTAG('m','o','o','v'):
2251 case MKTAG('m','d','a','t'):
2252 case MKTAG('p','n','o','t'): /* detect movs with preview pics like ew.mov and april.mov */
2253 case MKTAG('u','d','t','a'): /* Packet Video PVAuthor adds this and a lot of more junk */
2254 case MKTAG('f','t','y','p'):
2255 return AVPROBE_SCORE_MAX;
2256 /* those are more common words, so rate then a bit less */
2257 case MKTAG('e','d','i','w'): /* xdcam files have reverted first tags */
2258 case MKTAG('w','i','d','e'):
2259 case MKTAG('f','r','e','e'):
2260 case MKTAG('j','u','n','k'):
2261 case MKTAG('p','i','c','t'):
2262 return AVPROBE_SCORE_MAX - 5;
2263 case MKTAG(0x82,0x82,0x7f,0x7d):
2264 case MKTAG('s','k','i','p'):
2265 case MKTAG('u','u','i','d'):
2266 case MKTAG('p','r','f','l'):
2267 offset = AV_RB32(p->buf+offset) + offset;
2268 /* if we only find those cause probedata is too small at least rate them */
2269 score = AVPROBE_SCORE_MAX - 50;
2272 /* unrecognized tag */
2279 // must be done after parsing all trak because there's no order requirement
2280 static void mov_read_chapters(AVFormatContext *s)
2282 MOVContext *mov = s->priv_data;
2283 AVStream *st = NULL;
2284 MOVStreamContext *sc;
2286 uint8_t *title = NULL;
2287 int i, len, i8, i16;
2289 for (i = 0; i < s->nb_streams; i++)
2290 if (s->streams[i]->id == mov->chapter_track) {
2295 av_log(s, AV_LOG_ERROR, "Referenced QT chapter track not found\n");
2299 st->discard = AVDISCARD_ALL;
2301 cur_pos = url_ftell(sc->pb);
2303 for (i = 0; i < st->nb_index_entries; i++) {
2304 AVIndexEntry *sample = &st->index_entries[i];
2305 int64_t end = i+1 < st->nb_index_entries ? st->index_entries[i+1].timestamp : st->duration;
2307 if (url_fseek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
2308 av_log(s, AV_LOG_ERROR, "Chapter %d not found in file\n", i);
2312 title = av_malloc(sample->size+2);
2313 get_buffer(sc->pb, title, sample->size);
2315 // the first two bytes are the length of the title
2316 len = AV_RB16(title);
2317 if (len > sample->size-2)
2320 // The samples could theoretically be in any encoding if there's an encd
2321 // atom following, but in practice are only utf-8 or utf-16, distinguished
2322 // instead by the presence of a BOM
2323 if (AV_RB16(title+2) == 0xfeff) {
2324 uint8_t *utf8 = av_malloc(2*len+3);
2330 GET_UTF16(ch, i16 < len ? AV_RB16(title + (i16+=2)) : 0, break;)
2331 PUT_UTF8(ch, tmp, if (i8 < 2*len) utf8[2+i8++] = tmp;)
2338 ff_new_chapter(s, i, st->time_base, sample->timestamp, end, title+2);
2343 url_fseek(sc->pb, cur_pos, SEEK_SET);
2346 static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
2348 MOVContext *mov = s->priv_data;
2349 ByteIOContext *pb = s->pb;
2351 MOVAtom atom = { AV_RL32("root") };
2354 /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
2355 if(!url_is_streamed(pb))
2356 atom.size = url_fsize(pb);
2358 atom.size = INT64_MAX;
2360 /* check MOV header */
2361 if ((err = mov_read_default(mov, pb, atom)) < 0) {
2362 av_log(s, AV_LOG_ERROR, "error reading header: %d\n", err);
2365 if (!mov->found_moov) {
2366 av_log(s, AV_LOG_ERROR, "moov atom not found\n");
2369 dprintf(mov->fc, "on_parse_exit_offset=%lld\n", url_ftell(pb));
2371 if (!url_is_streamed(pb) && mov->chapter_track > 0)
2372 mov_read_chapters(s);
2377 static AVIndexEntry *mov_find_next_sample(AVFormatContext *s, AVStream **st)
2379 AVIndexEntry *sample = NULL;
2380 int64_t best_dts = INT64_MAX;
2382 for (i = 0; i < s->nb_streams; i++) {
2383 AVStream *avst = s->streams[i];
2384 MOVStreamContext *msc = avst->priv_data;
2385 if (msc->pb && msc->current_sample < avst->nb_index_entries) {
2386 AVIndexEntry *current_sample = &avst->index_entries[msc->current_sample];
2387 int64_t dts = av_rescale(current_sample->timestamp, AV_TIME_BASE, msc->time_scale);
2388 dprintf(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
2389 if (!sample || (url_is_streamed(s->pb) && current_sample->pos < sample->pos) ||
2390 (!url_is_streamed(s->pb) &&
2391 ((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb &&
2392 ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
2393 (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) {
2394 sample = current_sample;
2403 static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
2405 MOVContext *mov = s->priv_data;
2406 MOVStreamContext *sc;
2407 AVIndexEntry *sample;
2408 AVStream *st = NULL;
2411 sample = mov_find_next_sample(s, &st);
2413 mov->found_mdat = 0;
2414 if (!url_is_streamed(s->pb) ||
2415 mov_read_default(mov, s->pb, (MOVAtom){ AV_RL32("root"), INT64_MAX }) < 0 ||
2418 dprintf(s, "read fragments, offset 0x%llx\n", url_ftell(s->pb));
2422 /* must be done just before reading, to avoid infinite loop on sample */
2423 sc->current_sample++;
2425 if (st->discard != AVDISCARD_ALL) {
2426 if (url_fseek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
2427 av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
2428 sc->ffindex, sample->pos);
2431 ret = av_get_packet(sc->pb, pkt, sample->size);
2434 #if CONFIG_DV_DEMUXER
2435 if (mov->dv_demux && sc->dv_audio_container) {
2436 dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size);
2439 ret = dv_get_packet(mov->dv_demux, pkt);
2446 pkt->stream_index = sc->ffindex;
2447 pkt->dts = sample->timestamp;
2448 if (sc->ctts_data) {
2449 pkt->pts = pkt->dts + sc->dts_shift + sc->ctts_data[sc->ctts_index].duration;
2450 /* update ctts context */
2452 if (sc->ctts_index < sc->ctts_count &&
2453 sc->ctts_data[sc->ctts_index].count == sc->ctts_sample) {
2455 sc->ctts_sample = 0;
2458 pkt->dts = AV_NOPTS_VALUE;
2460 int64_t next_dts = (sc->current_sample < st->nb_index_entries) ?
2461 st->index_entries[sc->current_sample].timestamp : st->duration;
2462 pkt->duration = next_dts - pkt->dts;
2463 pkt->pts = pkt->dts;
2465 if (st->discard == AVDISCARD_ALL)
2467 pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? AV_PKT_FLAG_KEY : 0;
2468 pkt->pos = sample->pos;
2469 dprintf(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n",
2470 pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
2474 static int mov_seek_stream(AVFormatContext *s, AVStream *st, int64_t timestamp, int flags)
2476 MOVStreamContext *sc = st->priv_data;
2477 int sample, time_sample;
2480 sample = av_index_search_timestamp(st, timestamp, flags);
2481 dprintf(s, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
2482 if (sample < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
2484 if (sample < 0) /* not sure what to do */
2486 sc->current_sample = sample;
2487 dprintf(s, "stream %d, found sample %d\n", st->index, sc->current_sample);
2488 /* adjust ctts index */
2489 if (sc->ctts_data) {
2491 for (i = 0; i < sc->ctts_count; i++) {
2492 int next = time_sample + sc->ctts_data[i].count;
2493 if (next > sc->current_sample) {
2495 sc->ctts_sample = sc->current_sample - time_sample;
2504 static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
2507 int64_t seek_timestamp, timestamp;
2511 if (stream_index >= s->nb_streams)
2513 if (sample_time < 0)
2516 st = s->streams[stream_index];
2517 sample = mov_seek_stream(s, st, sample_time, flags);
2521 /* adjust seek timestamp to found sample timestamp */
2522 seek_timestamp = st->index_entries[sample].timestamp;
2524 for (i = 0; i < s->nb_streams; i++) {
2526 if (stream_index == i)
2529 timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
2530 mov_seek_stream(s, st, timestamp, flags);
2535 static int mov_read_close(AVFormatContext *s)
2537 MOVContext *mov = s->priv_data;
2540 for (i = 0; i < s->nb_streams; i++) {
2541 AVStream *st = s->streams[i];
2542 MOVStreamContext *sc = st->priv_data;
2544 av_freep(&sc->ctts_data);
2545 for (j = 0; j < sc->drefs_count; j++) {
2546 av_freep(&sc->drefs[j].path);
2547 av_freep(&sc->drefs[j].dir);
2549 av_freep(&sc->drefs);
2550 if (sc->pb && sc->pb != s->pb)
2553 av_freep(&st->codec->palctrl);
2556 if (mov->dv_demux) {
2557 for(i = 0; i < mov->dv_fctx->nb_streams; i++) {
2558 av_freep(&mov->dv_fctx->streams[i]->codec);
2559 av_freep(&mov->dv_fctx->streams[i]);
2561 av_freep(&mov->dv_fctx);
2562 av_freep(&mov->dv_demux);
2565 av_freep(&mov->trex_data);
2570 AVInputFormat mov_demuxer = {
2571 "mov,mp4,m4a,3gp,3g2,mj2",
2572 NULL_IF_CONFIG_SMALL("QuickTime/MPEG-4/Motion JPEG 2000 format"),