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)
594 time -= 2082844800; /* seconds between 1904-01-01 and Epoch */
595 strftime(buffer, sizeof(buffer), "%Y-%m-%d %H:%M:%S", gmtime(&time));
596 av_metadata_set2(metadata, "creation_time", buffer, 0);
600 static int mov_read_mdhd(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
603 MOVStreamContext *sc;
605 char language[4] = {0};
607 time_t creation_time;
609 if (c->fc->nb_streams < 1)
611 st = c->fc->streams[c->fc->nb_streams-1];
614 version = get_byte(pb);
616 return -1; /* unsupported */
618 get_be24(pb); /* flags */
620 creation_time = get_be64(pb);
623 creation_time = get_be32(pb);
624 get_be32(pb); /* modification time */
626 mov_metadata_creation_time(&st->metadata, creation_time);
628 sc->time_scale = get_be32(pb);
629 st->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
631 lang = get_be16(pb); /* language */
632 if (ff_mov_lang_to_iso639(lang, language))
633 av_metadata_set2(&st->metadata, "language", language, 0);
634 get_be16(pb); /* quality */
639 static int mov_read_mvhd(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
641 time_t creation_time;
642 int version = get_byte(pb); /* version */
643 get_be24(pb); /* flags */
646 creation_time = get_be64(pb);
649 creation_time = get_be32(pb);
650 get_be32(pb); /* modification time */
652 mov_metadata_creation_time(&c->fc->metadata, creation_time);
653 c->time_scale = get_be32(pb); /* time scale */
655 dprintf(c->fc, "time scale = %i\n", c->time_scale);
657 c->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
658 get_be32(pb); /* preferred scale */
660 get_be16(pb); /* preferred volume */
662 url_fskip(pb, 10); /* reserved */
664 url_fskip(pb, 36); /* display matrix */
666 get_be32(pb); /* preview time */
667 get_be32(pb); /* preview duration */
668 get_be32(pb); /* poster time */
669 get_be32(pb); /* selection time */
670 get_be32(pb); /* selection duration */
671 get_be32(pb); /* current time */
672 get_be32(pb); /* next track ID */
677 static int mov_read_smi(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
681 if (c->fc->nb_streams < 1)
683 st = c->fc->streams[c->fc->nb_streams-1];
685 if((uint64_t)atom.size > (1<<30))
688 // currently SVQ3 decoder expect full STSD header - so let's fake it
689 // this should be fixed and just SMI header should be passed
690 av_free(st->codec->extradata);
691 st->codec->extradata = av_mallocz(atom.size + 0x5a + FF_INPUT_BUFFER_PADDING_SIZE);
692 if (!st->codec->extradata)
693 return AVERROR(ENOMEM);
694 st->codec->extradata_size = 0x5a + atom.size;
695 memcpy(st->codec->extradata, "SVQ3", 4); // fake
696 get_buffer(pb, st->codec->extradata + 0x5a, atom.size);
697 dprintf(c->fc, "Reading SMI %"PRId64" %s\n", atom.size, st->codec->extradata + 0x5a);
701 static int mov_read_enda(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
706 if (c->fc->nb_streams < 1)
708 st = c->fc->streams[c->fc->nb_streams-1];
710 little_endian = get_be16(pb);
711 dprintf(c->fc, "enda %d\n", little_endian);
712 if (little_endian == 1) {
713 switch (st->codec->codec_id) {
714 case CODEC_ID_PCM_S24BE:
715 st->codec->codec_id = CODEC_ID_PCM_S24LE;
717 case CODEC_ID_PCM_S32BE:
718 st->codec->codec_id = CODEC_ID_PCM_S32LE;
720 case CODEC_ID_PCM_F32BE:
721 st->codec->codec_id = CODEC_ID_PCM_F32LE;
723 case CODEC_ID_PCM_F64BE:
724 st->codec->codec_id = CODEC_ID_PCM_F64LE;
733 /* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
734 static int mov_read_extradata(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
740 if (c->fc->nb_streams < 1) // will happen with jp2 files
742 st= c->fc->streams[c->fc->nb_streams-1];
743 size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
744 if(size > INT_MAX || (uint64_t)atom.size > INT_MAX)
746 buf= av_realloc(st->codec->extradata, size);
749 st->codec->extradata= buf;
750 buf+= st->codec->extradata_size;
751 st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE;
752 AV_WB32( buf , atom.size + 8);
753 AV_WL32( buf + 4, atom.type);
754 get_buffer(pb, buf + 8, atom.size);
758 static int mov_read_wave(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
762 if (c->fc->nb_streams < 1)
764 st = c->fc->streams[c->fc->nb_streams-1];
766 if((uint64_t)atom.size > (1<<30))
769 if (st->codec->codec_id == CODEC_ID_QDM2) {
770 // pass all frma atom to codec, needed at least for QDM2
771 av_free(st->codec->extradata);
772 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
773 if (!st->codec->extradata)
774 return AVERROR(ENOMEM);
775 st->codec->extradata_size = atom.size;
776 get_buffer(pb, st->codec->extradata, atom.size);
777 } else if (atom.size > 8) { /* to read frma, esds atoms */
778 if (mov_read_default(c, pb, atom) < 0)
781 url_fskip(pb, atom.size);
786 * This function reads atom content and puts data in extradata without tag
787 * nor size unlike mov_read_extradata.
789 static int mov_read_glbl(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
793 if (c->fc->nb_streams < 1)
795 st = c->fc->streams[c->fc->nb_streams-1];
797 if((uint64_t)atom.size > (1<<30))
800 av_free(st->codec->extradata);
801 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
802 if (!st->codec->extradata)
803 return AVERROR(ENOMEM);
804 st->codec->extradata_size = atom.size;
805 get_buffer(pb, st->codec->extradata, atom.size);
810 * An strf atom is a BITMAPINFOHEADER struct. This struct is 40 bytes itself,
811 * but can have extradata appended at the end after the 40 bytes belonging
814 static int mov_read_strf(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
818 if (c->fc->nb_streams < 1)
822 st = c->fc->streams[c->fc->nb_streams-1];
824 if((uint64_t)atom.size > (1<<30))
827 av_free(st->codec->extradata);
828 st->codec->extradata = av_mallocz(atom.size - 40 + FF_INPUT_BUFFER_PADDING_SIZE);
829 if (!st->codec->extradata)
830 return AVERROR(ENOMEM);
831 st->codec->extradata_size = atom.size - 40;
833 get_buffer(pb, st->codec->extradata, atom.size - 40);
837 static int mov_read_stco(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
840 MOVStreamContext *sc;
841 unsigned int i, entries;
843 if (c->fc->nb_streams < 1)
845 st = c->fc->streams[c->fc->nb_streams-1];
848 get_byte(pb); /* version */
849 get_be24(pb); /* flags */
851 entries = get_be32(pb);
853 if(entries >= UINT_MAX/sizeof(int64_t))
856 sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
857 if (!sc->chunk_offsets)
858 return AVERROR(ENOMEM);
859 sc->chunk_count = entries;
861 if (atom.type == MKTAG('s','t','c','o'))
862 for(i=0; i<entries; i++)
863 sc->chunk_offsets[i] = get_be32(pb);
864 else if (atom.type == MKTAG('c','o','6','4'))
865 for(i=0; i<entries; i++)
866 sc->chunk_offsets[i] = get_be64(pb);
874 * Compute codec id for 'lpcm' tag.
875 * See CoreAudioTypes and AudioStreamBasicDescription at Apple.
877 enum CodecID ff_mov_get_lpcm_codec_id(int bps, int flags)
879 if (flags & 1) { // floating point
880 if (flags & 2) { // big endian
881 if (bps == 32) return CODEC_ID_PCM_F32BE;
882 else if (bps == 64) return CODEC_ID_PCM_F64BE;
884 if (bps == 32) return CODEC_ID_PCM_F32LE;
885 else if (bps == 64) return CODEC_ID_PCM_F64LE;
891 if (flags & 4) return CODEC_ID_PCM_S8;
892 else return CODEC_ID_PCM_U8;
893 else if (bps == 16) return CODEC_ID_PCM_S16BE;
894 else if (bps == 24) return CODEC_ID_PCM_S24BE;
895 else if (bps == 32) return CODEC_ID_PCM_S32BE;
898 if (flags & 4) return CODEC_ID_PCM_S8;
899 else return CODEC_ID_PCM_U8;
900 else if (bps == 16) return CODEC_ID_PCM_S16LE;
901 else if (bps == 24) return CODEC_ID_PCM_S24LE;
902 else if (bps == 32) return CODEC_ID_PCM_S32LE;
905 return CODEC_ID_NONE;
908 int ff_mov_read_stsd_entries(MOVContext *c, ByteIOContext *pb, int entries)
911 MOVStreamContext *sc;
912 int j, pseudo_stream_id;
914 if (c->fc->nb_streams < 1)
916 st = c->fc->streams[c->fc->nb_streams-1];
919 for(pseudo_stream_id=0; pseudo_stream_id<entries; pseudo_stream_id++) {
920 //Parsing Sample description table
923 MOVAtom a = { AV_RL32("stsd") };
924 int64_t start_pos = url_ftell(pb);
925 int size = get_be32(pb); /* size */
926 uint32_t format = get_le32(pb); /* data format */
929 get_be32(pb); /* reserved */
930 get_be16(pb); /* reserved */
931 dref_id = get_be16(pb);
934 if (st->codec->codec_tag &&
935 st->codec->codec_tag != format &&
936 (c->fc->video_codec_id ? ff_codec_get_id(codec_movvideo_tags, format) != c->fc->video_codec_id
937 : st->codec->codec_tag != MKTAG('j','p','e','g'))
939 /* Multiple fourcc, we skip JPEG. This is not correct, we should
940 * export it as a separate AVStream but this needs a few changes
941 * in the MOV demuxer, patch welcome. */
943 av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n");
944 url_fskip(pb, size - (url_ftell(pb) - start_pos));
947 /* we cannot demux concatenated h264 streams because of different extradata */
948 if (st->codec->codec_tag && st->codec->codec_tag == AV_RL32("avc1"))
950 sc->pseudo_stream_id = st->codec->codec_tag ? -1 : pseudo_stream_id;
951 sc->dref_id= dref_id;
953 st->codec->codec_tag = format;
954 id = ff_codec_get_id(codec_movaudio_tags, format);
955 if (id<=0 && ((format&0xFFFF) == 'm'+('s'<<8) || (format&0xFFFF) == 'T'+('S'<<8)))
956 id = ff_codec_get_id(ff_codec_wav_tags, av_bswap32(format)&0xFFFF);
958 if (st->codec->codec_type != AVMEDIA_TYPE_VIDEO && id > 0) {
959 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
960 } else if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO && /* do not overwrite codec type */
961 format && format != MKTAG('m','p','4','s')) { /* skip old asf mpeg4 tag */
962 id = ff_codec_get_id(codec_movvideo_tags, format);
964 id = ff_codec_get_id(ff_codec_bmp_tags, format);
966 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
967 else if(st->codec->codec_type == AVMEDIA_TYPE_DATA){
968 id = ff_codec_get_id(ff_codec_movsubtitle_tags, format);
970 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
974 dprintf(c->fc, "size=%d 4CC= %c%c%c%c codec_type=%d\n", size,
975 (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff,
976 (format >> 24) & 0xff, st->codec->codec_type);
978 if(st->codec->codec_type==AVMEDIA_TYPE_VIDEO) {
979 unsigned int color_depth, len;
982 st->codec->codec_id = id;
983 get_be16(pb); /* version */
984 get_be16(pb); /* revision level */
985 get_be32(pb); /* vendor */
986 get_be32(pb); /* temporal quality */
987 get_be32(pb); /* spatial quality */
989 st->codec->width = get_be16(pb); /* width */
990 st->codec->height = get_be16(pb); /* height */
992 get_be32(pb); /* horiz resolution */
993 get_be32(pb); /* vert resolution */
994 get_be32(pb); /* data size, always 0 */
995 get_be16(pb); /* frames per samples */
997 len = get_byte(pb); /* codec name, pascal string */
1000 mov_read_mac_string(c, pb, len, st->codec->codec_name, 32);
1002 url_fskip(pb, 31 - len);
1003 /* codec_tag YV12 triggers an UV swap in rawdec.c */
1004 if (!memcmp(st->codec->codec_name, "Planar Y'CbCr 8-bit 4:2:0", 25))
1005 st->codec->codec_tag=MKTAG('I', '4', '2', '0');
1007 st->codec->bits_per_coded_sample = get_be16(pb); /* depth */
1008 st->codec->color_table_id = get_be16(pb); /* colortable id */
1009 dprintf(c->fc, "depth %d, ctab id %d\n",
1010 st->codec->bits_per_coded_sample, st->codec->color_table_id);
1011 /* figure out the palette situation */
1012 color_depth = st->codec->bits_per_coded_sample & 0x1F;
1013 color_greyscale = st->codec->bits_per_coded_sample & 0x20;
1015 /* if the depth is 2, 4, or 8 bpp, file is palettized */
1016 if ((color_depth == 2) || (color_depth == 4) ||
1017 (color_depth == 8)) {
1018 /* for palette traversal */
1019 unsigned int color_start, color_count, color_end;
1020 unsigned char r, g, b;
1022 st->codec->palctrl = av_malloc(sizeof(*st->codec->palctrl));
1023 if (color_greyscale) {
1024 int color_index, color_dec;
1025 /* compute the greyscale palette */
1026 st->codec->bits_per_coded_sample = color_depth;
1027 color_count = 1 << color_depth;
1029 color_dec = 256 / (color_count - 1);
1030 for (j = 0; j < color_count; j++) {
1031 r = g = b = color_index;
1032 st->codec->palctrl->palette[j] =
1033 (r << 16) | (g << 8) | (b);
1034 color_index -= color_dec;
1035 if (color_index < 0)
1038 } else if (st->codec->color_table_id) {
1039 const uint8_t *color_table;
1040 /* if flag bit 3 is set, use the default palette */
1041 color_count = 1 << color_depth;
1042 if (color_depth == 2)
1043 color_table = ff_qt_default_palette_4;
1044 else if (color_depth == 4)
1045 color_table = ff_qt_default_palette_16;
1047 color_table = ff_qt_default_palette_256;
1049 for (j = 0; j < color_count; j++) {
1050 r = color_table[j * 3 + 0];
1051 g = color_table[j * 3 + 1];
1052 b = color_table[j * 3 + 2];
1053 st->codec->palctrl->palette[j] =
1054 (r << 16) | (g << 8) | (b);
1057 /* load the palette from the file */
1058 color_start = get_be32(pb);
1059 color_count = get_be16(pb);
1060 color_end = get_be16(pb);
1061 if ((color_start <= 255) &&
1062 (color_end <= 255)) {
1063 for (j = color_start; j <= color_end; j++) {
1064 /* each R, G, or B component is 16 bits;
1065 * only use the top 8 bits; skip alpha bytes
1075 st->codec->palctrl->palette[j] =
1076 (r << 16) | (g << 8) | (b);
1080 st->codec->palctrl->palette_changed = 1;
1082 } else if(st->codec->codec_type==AVMEDIA_TYPE_AUDIO) {
1083 int bits_per_sample, flags;
1084 uint16_t version = get_be16(pb);
1086 st->codec->codec_id = id;
1087 get_be16(pb); /* revision level */
1088 get_be32(pb); /* vendor */
1090 st->codec->channels = get_be16(pb); /* channel count */
1091 dprintf(c->fc, "audio channels %d\n", st->codec->channels);
1092 st->codec->bits_per_coded_sample = get_be16(pb); /* sample size */
1094 sc->audio_cid = get_be16(pb);
1095 get_be16(pb); /* packet size = 0 */
1097 st->codec->sample_rate = ((get_be32(pb) >> 16));
1099 //Read QT version 1 fields. In version 0 these do not exist.
1100 dprintf(c->fc, "version =%d, isom =%d\n",version,c->isom);
1103 sc->samples_per_frame = get_be32(pb);
1104 get_be32(pb); /* bytes per packet */
1105 sc->bytes_per_frame = get_be32(pb);
1106 get_be32(pb); /* bytes per sample */
1107 } else if(version==2) {
1108 get_be32(pb); /* sizeof struct only */
1109 st->codec->sample_rate = av_int2dbl(get_be64(pb)); /* float 64 */
1110 st->codec->channels = get_be32(pb);
1111 get_be32(pb); /* always 0x7F000000 */
1112 st->codec->bits_per_coded_sample = get_be32(pb); /* bits per channel if sound is uncompressed */
1113 flags = get_be32(pb); /* lpcm format specific flag */
1114 sc->bytes_per_frame = get_be32(pb); /* bytes per audio packet if constant */
1115 sc->samples_per_frame = get_be32(pb); /* lpcm frames per audio packet if constant */
1116 if (format == MKTAG('l','p','c','m'))
1117 st->codec->codec_id = ff_mov_get_lpcm_codec_id(st->codec->bits_per_coded_sample, flags);
1121 switch (st->codec->codec_id) {
1122 case CODEC_ID_PCM_S8:
1123 case CODEC_ID_PCM_U8:
1124 if (st->codec->bits_per_coded_sample == 16)
1125 st->codec->codec_id = CODEC_ID_PCM_S16BE;
1127 case CODEC_ID_PCM_S16LE:
1128 case CODEC_ID_PCM_S16BE:
1129 if (st->codec->bits_per_coded_sample == 8)
1130 st->codec->codec_id = CODEC_ID_PCM_S8;
1131 else if (st->codec->bits_per_coded_sample == 24)
1132 st->codec->codec_id =
1133 st->codec->codec_id == CODEC_ID_PCM_S16BE ?
1134 CODEC_ID_PCM_S24BE : CODEC_ID_PCM_S24LE;
1136 /* set values for old format before stsd version 1 appeared */
1137 case CODEC_ID_MACE3:
1138 sc->samples_per_frame = 6;
1139 sc->bytes_per_frame = 2*st->codec->channels;
1141 case CODEC_ID_MACE6:
1142 sc->samples_per_frame = 6;
1143 sc->bytes_per_frame = 1*st->codec->channels;
1145 case CODEC_ID_ADPCM_IMA_QT:
1146 sc->samples_per_frame = 64;
1147 sc->bytes_per_frame = 34*st->codec->channels;
1150 sc->samples_per_frame = 160;
1151 sc->bytes_per_frame = 33;
1157 bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
1158 if (bits_per_sample) {
1159 st->codec->bits_per_coded_sample = bits_per_sample;
1160 sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
1162 } else if(st->codec->codec_type==AVMEDIA_TYPE_SUBTITLE){
1163 // ttxt stsd contains display flags, justification, background
1164 // color, fonts, and default styles, so fake an atom to read it
1165 MOVAtom fake_atom = { .size = size - (url_ftell(pb) - start_pos) };
1166 if (format != AV_RL32("mp4s")) // mp4s contains a regular esds atom
1167 mov_read_glbl(c, pb, fake_atom);
1168 st->codec->codec_id= id;
1169 st->codec->width = sc->width;
1170 st->codec->height = sc->height;
1172 /* other codec type, just skip (rtp, mp4s, tmcd ...) */
1173 url_fskip(pb, size - (url_ftell(pb) - start_pos));
1175 /* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */
1176 a.size = size - (url_ftell(pb) - start_pos);
1178 if (mov_read_default(c, pb, a) < 0)
1180 } else if (a.size > 0)
1181 url_fskip(pb, a.size);
1184 if(st->codec->codec_type==AVMEDIA_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1)
1185 st->codec->sample_rate= sc->time_scale;
1187 /* special codec parameters handling */
1188 switch (st->codec->codec_id) {
1189 #if CONFIG_DV_DEMUXER
1190 case CODEC_ID_DVAUDIO:
1191 c->dv_fctx = avformat_alloc_context();
1192 c->dv_demux = dv_init_demux(c->dv_fctx);
1194 av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
1197 sc->dv_audio_container = 1;
1198 st->codec->codec_id = CODEC_ID_PCM_S16LE;
1201 /* no ifdef since parameters are always those */
1202 case CODEC_ID_QCELP:
1203 // force sample rate for qcelp when not stored in mov
1204 if (st->codec->codec_tag != MKTAG('Q','c','l','p'))
1205 st->codec->sample_rate = 8000;
1206 st->codec->frame_size= 160;
1207 st->codec->channels= 1; /* really needed */
1209 case CODEC_ID_AMR_NB:
1210 case CODEC_ID_AMR_WB:
1211 st->codec->frame_size= sc->samples_per_frame;
1212 st->codec->channels= 1; /* really needed */
1213 /* force sample rate for amr, stsd in 3gp does not store sample rate */
1214 if (st->codec->codec_id == CODEC_ID_AMR_NB)
1215 st->codec->sample_rate = 8000;
1216 else if (st->codec->codec_id == CODEC_ID_AMR_WB)
1217 st->codec->sample_rate = 16000;
1221 st->codec->codec_type = AVMEDIA_TYPE_AUDIO; /* force type after stsd for m1a hdlr */
1222 st->need_parsing = AVSTREAM_PARSE_FULL;
1225 case CODEC_ID_ADPCM_MS:
1226 case CODEC_ID_ADPCM_IMA_WAV:
1227 st->codec->block_align = sc->bytes_per_frame;
1230 if (st->codec->extradata_size == 36) {
1231 st->codec->frame_size = AV_RB32(st->codec->extradata+12);
1232 st->codec->channels = AV_RB8 (st->codec->extradata+21);
1233 st->codec->sample_rate = AV_RB32(st->codec->extradata+32);
1243 static int mov_read_stsd(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
1247 get_byte(pb); /* version */
1248 get_be24(pb); /* flags */
1249 entries = get_be32(pb);
1251 return ff_mov_read_stsd_entries(c, pb, entries);
1254 static int mov_read_stsc(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
1257 MOVStreamContext *sc;
1258 unsigned int i, entries;
1260 if (c->fc->nb_streams < 1)
1262 st = c->fc->streams[c->fc->nb_streams-1];
1265 get_byte(pb); /* version */
1266 get_be24(pb); /* flags */
1268 entries = get_be32(pb);
1270 dprintf(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
1272 if(entries >= UINT_MAX / sizeof(*sc->stsc_data))
1274 sc->stsc_data = av_malloc(entries * sizeof(*sc->stsc_data));
1276 return AVERROR(ENOMEM);
1277 sc->stsc_count = entries;
1279 for(i=0; i<entries; i++) {
1280 sc->stsc_data[i].first = get_be32(pb);
1281 sc->stsc_data[i].count = get_be32(pb);
1282 sc->stsc_data[i].id = get_be32(pb);
1287 static int mov_read_stps(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
1290 MOVStreamContext *sc;
1291 unsigned i, entries;
1293 if (c->fc->nb_streams < 1)
1295 st = c->fc->streams[c->fc->nb_streams-1];
1298 get_be32(pb); // version + flags
1300 entries = get_be32(pb);
1301 if (entries >= UINT_MAX / sizeof(*sc->stps_data))
1303 sc->stps_data = av_malloc(entries * sizeof(*sc->stps_data));
1305 return AVERROR(ENOMEM);
1306 sc->stps_count = entries;
1308 for (i = 0; i < entries; i++) {
1309 sc->stps_data[i] = get_be32(pb);
1310 //dprintf(c->fc, "stps %d\n", sc->stps_data[i]);
1316 static int mov_read_stss(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
1319 MOVStreamContext *sc;
1320 unsigned int i, entries;
1322 if (c->fc->nb_streams < 1)
1324 st = c->fc->streams[c->fc->nb_streams-1];
1327 get_byte(pb); /* version */
1328 get_be24(pb); /* flags */
1330 entries = get_be32(pb);
1332 dprintf(c->fc, "keyframe_count = %d\n", entries);
1334 if(entries >= UINT_MAX / sizeof(int))
1336 sc->keyframes = av_malloc(entries * sizeof(int));
1338 return AVERROR(ENOMEM);
1339 sc->keyframe_count = entries;
1341 for(i=0; i<entries; i++) {
1342 sc->keyframes[i] = get_be32(pb);
1343 //dprintf(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
1348 static int mov_read_stsz(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
1351 MOVStreamContext *sc;
1352 unsigned int i, entries, sample_size, field_size, num_bytes;
1356 if (c->fc->nb_streams < 1)
1358 st = c->fc->streams[c->fc->nb_streams-1];
1361 get_byte(pb); /* version */
1362 get_be24(pb); /* flags */
1364 if (atom.type == MKTAG('s','t','s','z')) {
1365 sample_size = get_be32(pb);
1366 if (!sc->sample_size) /* do not overwrite value computed in stsd */
1367 sc->sample_size = sample_size;
1371 get_be24(pb); /* reserved */
1372 field_size = get_byte(pb);
1374 entries = get_be32(pb);
1376 dprintf(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, entries);
1378 sc->sample_count = entries;
1382 if (field_size != 4 && field_size != 8 && field_size != 16 && field_size != 32) {
1383 av_log(c->fc, AV_LOG_ERROR, "Invalid sample field size %d\n", field_size);
1387 if (entries >= UINT_MAX / sizeof(int) || entries >= (UINT_MAX - 4) / field_size)
1389 sc->sample_sizes = av_malloc(entries * sizeof(int));
1390 if (!sc->sample_sizes)
1391 return AVERROR(ENOMEM);
1393 num_bytes = (entries*field_size+4)>>3;
1395 buf = av_malloc(num_bytes+FF_INPUT_BUFFER_PADDING_SIZE);
1397 av_freep(&sc->sample_sizes);
1398 return AVERROR(ENOMEM);
1401 if (get_buffer(pb, buf, num_bytes) < num_bytes) {
1402 av_freep(&sc->sample_sizes);
1407 init_get_bits(&gb, buf, 8*num_bytes);
1409 for(i=0; i<entries; i++)
1410 sc->sample_sizes[i] = get_bits_long(&gb, field_size);
1416 static int mov_read_stts(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
1419 MOVStreamContext *sc;
1420 unsigned int i, entries;
1422 int64_t total_sample_count=0;
1424 if (c->fc->nb_streams < 1)
1426 st = c->fc->streams[c->fc->nb_streams-1];
1429 get_byte(pb); /* version */
1430 get_be24(pb); /* flags */
1431 entries = get_be32(pb);
1433 dprintf(c->fc, "track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries);
1435 if(entries >= UINT_MAX / sizeof(*sc->stts_data))
1437 sc->stts_data = av_malloc(entries * sizeof(*sc->stts_data));
1439 return AVERROR(ENOMEM);
1440 sc->stts_count = entries;
1442 for(i=0; i<entries; i++) {
1443 int sample_duration;
1446 sample_count=get_be32(pb);
1447 sample_duration = get_be32(pb);
1448 sc->stts_data[i].count= sample_count;
1449 sc->stts_data[i].duration= sample_duration;
1451 dprintf(c->fc, "sample_count=%d, sample_duration=%d\n",sample_count,sample_duration);
1453 duration+=(int64_t)sample_duration*sample_count;
1454 total_sample_count+=sample_count;
1457 st->nb_frames= total_sample_count;
1459 st->duration= duration;
1463 static int mov_read_ctts(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
1466 MOVStreamContext *sc;
1467 unsigned int i, entries;
1469 if (c->fc->nb_streams < 1)
1471 st = c->fc->streams[c->fc->nb_streams-1];
1474 get_byte(pb); /* version */
1475 get_be24(pb); /* flags */
1476 entries = get_be32(pb);
1478 dprintf(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
1480 if(entries >= UINT_MAX / sizeof(*sc->ctts_data))
1482 sc->ctts_data = av_malloc(entries * sizeof(*sc->ctts_data));
1484 return AVERROR(ENOMEM);
1485 sc->ctts_count = entries;
1487 for(i=0; i<entries; i++) {
1488 int count =get_be32(pb);
1489 int duration =get_be32(pb);
1491 sc->ctts_data[i].count = count;
1492 sc->ctts_data[i].duration= duration;
1494 sc->dts_shift = FFMAX(sc->dts_shift, -duration);
1497 dprintf(c->fc, "dts shift %d\n", sc->dts_shift);
1502 static void mov_build_index(MOVContext *mov, AVStream *st)
1504 MOVStreamContext *sc = st->priv_data;
1505 int64_t current_offset;
1506 int64_t current_dts = 0;
1507 unsigned int stts_index = 0;
1508 unsigned int stsc_index = 0;
1509 unsigned int stss_index = 0;
1510 unsigned int stps_index = 0;
1512 uint64_t stream_size = 0;
1514 /* adjust first dts according to edit list */
1515 if (sc->time_offset) {
1516 int rescaled = sc->time_offset < 0 ? av_rescale(sc->time_offset, sc->time_scale, mov->time_scale) : sc->time_offset;
1517 current_dts = -rescaled;
1518 if (sc->ctts_data && sc->ctts_data[0].duration / sc->stts_data[0].duration > 16) {
1519 /* more than 16 frames delay, dts are likely wrong
1520 this happens with files created by iMovie */
1522 st->codec->has_b_frames = 1;
1526 /* only use old uncompressed audio chunk demuxing when stts specifies it */
1527 if (!(st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
1528 sc->stts_count == 1 && sc->stts_data[0].duration == 1)) {
1529 unsigned int current_sample = 0;
1530 unsigned int stts_sample = 0;
1531 unsigned int sample_size;
1532 unsigned int distance = 0;
1533 int key_off = sc->keyframes && sc->keyframes[0] == 1;
1535 current_dts -= sc->dts_shift;
1537 if (sc->sample_count >= UINT_MAX / sizeof(*st->index_entries))
1539 st->index_entries = av_malloc(sc->sample_count*sizeof(*st->index_entries));
1540 if (!st->index_entries)
1542 st->index_entries_allocated_size = sc->sample_count*sizeof(*st->index_entries);
1544 for (i = 0; i < sc->chunk_count; i++) {
1545 current_offset = sc->chunk_offsets[i];
1546 if (stsc_index + 1 < sc->stsc_count &&
1547 i + 1 == sc->stsc_data[stsc_index + 1].first)
1549 for (j = 0; j < sc->stsc_data[stsc_index].count; j++) {
1551 if (current_sample >= sc->sample_count) {
1552 av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
1556 if (!sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index]) {
1558 if (stss_index + 1 < sc->keyframe_count)
1560 } else if (sc->stps_count && current_sample+key_off == sc->stps_data[stps_index]) {
1562 if (stps_index + 1 < sc->stps_count)
1567 sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
1568 if(sc->pseudo_stream_id == -1 ||
1569 sc->stsc_data[stsc_index].id - 1 == sc->pseudo_stream_id) {
1570 AVIndexEntry *e = &st->index_entries[st->nb_index_entries++];
1571 e->pos = current_offset;
1572 e->timestamp = current_dts;
1573 e->size = sample_size;
1574 e->min_distance = distance;
1575 e->flags = keyframe ? AVINDEX_KEYFRAME : 0;
1576 dprintf(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
1577 "size %d, distance %d, keyframe %d\n", st->index, current_sample,
1578 current_offset, current_dts, sample_size, distance, keyframe);
1581 current_offset += sample_size;
1582 stream_size += sample_size;
1583 current_dts += sc->stts_data[stts_index].duration;
1587 if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
1593 if (st->duration > 0)
1594 st->codec->bit_rate = stream_size*8*sc->time_scale/st->duration;
1596 unsigned chunk_samples, total = 0;
1598 // compute total chunk count
1599 for (i = 0; i < sc->stsc_count; i++) {
1600 unsigned count, chunk_count;
1602 chunk_samples = sc->stsc_data[i].count;
1603 if (sc->samples_per_frame && chunk_samples % sc->samples_per_frame) {
1604 av_log(mov->fc, AV_LOG_ERROR, "error unaligned chunk\n");
1608 if (sc->samples_per_frame >= 160) { // gsm
1609 count = chunk_samples / sc->samples_per_frame;
1610 } else if (sc->samples_per_frame > 1) {
1611 unsigned samples = (1024/sc->samples_per_frame)*sc->samples_per_frame;
1612 count = (chunk_samples+samples-1) / samples;
1614 count = (chunk_samples+1023) / 1024;
1617 if (i < sc->stsc_count - 1)
1618 chunk_count = sc->stsc_data[i+1].first - sc->stsc_data[i].first;
1620 chunk_count = sc->chunk_count - (sc->stsc_data[i].first - 1);
1621 total += chunk_count * count;
1624 dprintf(mov->fc, "chunk count %d\n", total);
1625 if (total >= UINT_MAX / sizeof(*st->index_entries))
1627 st->index_entries = av_malloc(total*sizeof(*st->index_entries));
1628 if (!st->index_entries)
1630 st->index_entries_allocated_size = total*sizeof(*st->index_entries);
1633 for (i = 0; i < sc->chunk_count; i++) {
1634 current_offset = sc->chunk_offsets[i];
1635 if (stsc_index + 1 < sc->stsc_count &&
1636 i + 1 == sc->stsc_data[stsc_index + 1].first)
1638 chunk_samples = sc->stsc_data[stsc_index].count;
1640 while (chunk_samples > 0) {
1642 unsigned size, samples;
1644 if (sc->samples_per_frame >= 160) { // gsm
1645 samples = sc->samples_per_frame;
1646 size = sc->bytes_per_frame;
1648 if (sc->samples_per_frame > 1) {
1649 samples = FFMIN((1024 / sc->samples_per_frame)*
1650 sc->samples_per_frame, chunk_samples);
1651 size = (samples / sc->samples_per_frame) * sc->bytes_per_frame;
1653 samples = FFMIN(1024, chunk_samples);
1654 size = samples * sc->sample_size;
1658 if (st->nb_index_entries >= total) {
1659 av_log(mov->fc, AV_LOG_ERROR, "wrong chunk count %d\n", total);
1662 e = &st->index_entries[st->nb_index_entries++];
1663 e->pos = current_offset;
1664 e->timestamp = current_dts;
1666 e->min_distance = 0;
1667 e->flags = AVINDEX_KEYFRAME;
1668 dprintf(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", "
1669 "size %d, duration %d\n", st->index, i, current_offset, current_dts,
1672 current_offset += size;
1673 current_dts += samples;
1674 chunk_samples -= samples;
1680 static int mov_open_dref(ByteIOContext **pb, char *src, MOVDref *ref)
1682 /* try relative path, we do not try the absolute because it can leak information about our
1683 system to an attacker */
1684 if (ref->nlvl_to > 0 && ref->nlvl_from > 0) {
1685 char filename[1024];
1689 /* find a source dir */
1690 src_path = strrchr(src, '/');
1696 /* find a next level down to target */
1697 for (i = 0, l = strlen(ref->path) - 1; l >= 0; l--)
1698 if (ref->path[l] == '/') {
1699 if (i == ref->nlvl_to - 1)
1705 /* compose filename if next level down to target was found */
1706 if (i == ref->nlvl_to - 1 && src_path - src < sizeof(filename)) {
1707 memcpy(filename, src, src_path - src);
1708 filename[src_path - src] = 0;
1710 for (i = 1; i < ref->nlvl_from; i++)
1711 av_strlcat(filename, "../", 1024);
1713 av_strlcat(filename, ref->path + l + 1, 1024);
1715 if (!url_fopen(pb, filename, URL_RDONLY))
1720 return AVERROR(ENOENT);
1723 static int mov_read_trak(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
1726 MOVStreamContext *sc;
1729 st = av_new_stream(c->fc, c->fc->nb_streams);
1730 if (!st) return AVERROR(ENOMEM);
1731 sc = av_mallocz(sizeof(MOVStreamContext));
1732 if (!sc) return AVERROR(ENOMEM);
1735 st->codec->codec_type = AVMEDIA_TYPE_DATA;
1736 sc->ffindex = st->index;
1738 if ((ret = mov_read_default(c, pb, atom)) < 0)
1742 if (sc->chunk_count && (!sc->stts_count || !sc->stsc_count ||
1743 (!sc->sample_size && !sc->sample_count))) {
1744 av_log(c->fc, AV_LOG_ERROR, "stream %d, missing mandatory atoms, broken header\n",
1749 if (!sc->time_scale) {
1750 av_log(c->fc, AV_LOG_WARNING, "stream %d, timescale not set\n", st->index);
1751 sc->time_scale = c->time_scale;
1752 if (!sc->time_scale)
1756 av_set_pts_info(st, 64, 1, sc->time_scale);
1758 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
1759 !st->codec->frame_size && sc->stts_count == 1) {
1760 st->codec->frame_size = av_rescale(sc->stts_data[0].duration,
1761 st->codec->sample_rate, sc->time_scale);
1762 dprintf(c->fc, "frame size %d\n", st->codec->frame_size);
1765 mov_build_index(c, st);
1767 if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) {
1768 MOVDref *dref = &sc->drefs[sc->dref_id - 1];
1769 if (mov_open_dref(&sc->pb, c->fc->filename, dref) < 0)
1770 av_log(c->fc, AV_LOG_ERROR,
1771 "stream %d, error opening alias: path='%s', dir='%s', "
1772 "filename='%s', volume='%s', nlvl_from=%d, nlvl_to=%d\n",
1773 st->index, dref->path, dref->dir, dref->filename,
1774 dref->volume, dref->nlvl_from, dref->nlvl_to);
1778 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1779 if (!st->sample_aspect_ratio.num &&
1780 (st->codec->width != sc->width || st->codec->height != sc->height)) {
1781 st->sample_aspect_ratio = av_d2q(((double)st->codec->height * sc->width) /
1782 ((double)st->codec->width * sc->height), INT_MAX);
1785 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
1786 sc->time_scale*st->nb_frames, st->duration, INT_MAX);
1789 switch (st->codec->codec_id) {
1790 #if CONFIG_H261_DECODER
1793 #if CONFIG_H263_DECODER
1796 #if CONFIG_H264_DECODER
1799 #if CONFIG_MPEG4_DECODER
1800 case CODEC_ID_MPEG4:
1802 st->codec->width = 0; /* let decoder init width/height */
1803 st->codec->height= 0;
1807 /* Do not need those anymore. */
1808 av_freep(&sc->chunk_offsets);
1809 av_freep(&sc->stsc_data);
1810 av_freep(&sc->sample_sizes);
1811 av_freep(&sc->keyframes);
1812 av_freep(&sc->stts_data);
1813 av_freep(&sc->stps_data);
1818 static int mov_read_ilst(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
1821 c->itunes_metadata = 1;
1822 ret = mov_read_default(c, pb, atom);
1823 c->itunes_metadata = 0;
1827 static int mov_read_meta(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
1829 while (atom.size > 8) {
1830 uint32_t tag = get_le32(pb);
1832 if (tag == MKTAG('h','d','l','r')) {
1833 url_fseek(pb, -8, SEEK_CUR);
1835 return mov_read_default(c, pb, atom);
1841 static int mov_read_tkhd(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
1846 int64_t disp_transform[2];
1847 int display_matrix[3][2];
1849 MOVStreamContext *sc;
1852 if (c->fc->nb_streams < 1)
1854 st = c->fc->streams[c->fc->nb_streams-1];
1857 version = get_byte(pb);
1858 get_be24(pb); /* flags */
1860 MOV_TRACK_ENABLED 0x0001
1861 MOV_TRACK_IN_MOVIE 0x0002
1862 MOV_TRACK_IN_PREVIEW 0x0004
1863 MOV_TRACK_IN_POSTER 0x0008
1870 get_be32(pb); /* creation time */
1871 get_be32(pb); /* modification time */
1873 st->id = (int)get_be32(pb); /* track id (NOT 0 !)*/
1874 get_be32(pb); /* reserved */
1876 /* highlevel (considering edits) duration in movie timebase */
1877 (version == 1) ? get_be64(pb) : get_be32(pb);
1878 get_be32(pb); /* reserved */
1879 get_be32(pb); /* reserved */
1881 get_be16(pb); /* layer */
1882 get_be16(pb); /* alternate group */
1883 get_be16(pb); /* volume */
1884 get_be16(pb); /* reserved */
1886 //read in the display matrix (outlined in ISO 14496-12, Section 6.2.2)
1887 // they're kept in fixed point format through all calculations
1888 // ignore u,v,z b/c we don't need the scale factor to calc aspect ratio
1889 for (i = 0; i < 3; i++) {
1890 display_matrix[i][0] = get_be32(pb); // 16.16 fixed point
1891 display_matrix[i][1] = get_be32(pb); // 16.16 fixed point
1892 get_be32(pb); // 2.30 fixed point (not used)
1895 width = get_be32(pb); // 16.16 fixed point track width
1896 height = get_be32(pb); // 16.16 fixed point track height
1897 sc->width = width >> 16;
1898 sc->height = height >> 16;
1900 // transform the display width/height according to the matrix
1901 // skip this if the display matrix is the default identity matrix
1902 // or if it is rotating the picture, ex iPhone 3GS
1903 // to keep the same scale, use [width height 1<<16]
1904 if (width && height &&
1905 ((display_matrix[0][0] != 65536 ||
1906 display_matrix[1][1] != 65536) &&
1907 !display_matrix[0][1] &&
1908 !display_matrix[1][0] &&
1909 !display_matrix[2][0] && !display_matrix[2][1])) {
1910 for (i = 0; i < 2; i++)
1912 (int64_t) width * display_matrix[0][i] +
1913 (int64_t) height * display_matrix[1][i] +
1914 ((int64_t) display_matrix[2][i] << 16);
1916 //sample aspect ratio is new width/height divided by old width/height
1917 st->sample_aspect_ratio = av_d2q(
1918 ((double) disp_transform[0] * height) /
1919 ((double) disp_transform[1] * width), INT_MAX);
1924 static int mov_read_tfhd(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
1926 MOVFragment *frag = &c->fragment;
1927 MOVTrackExt *trex = NULL;
1928 int flags, track_id, i;
1930 get_byte(pb); /* version */
1931 flags = get_be24(pb);
1933 track_id = get_be32(pb);
1936 frag->track_id = track_id;
1937 for (i = 0; i < c->trex_count; i++)
1938 if (c->trex_data[i].track_id == frag->track_id) {
1939 trex = &c->trex_data[i];
1943 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding trex\n");
1947 if (flags & 0x01) frag->base_data_offset = get_be64(pb);
1948 else frag->base_data_offset = frag->moof_offset;
1949 if (flags & 0x02) frag->stsd_id = get_be32(pb);
1950 else frag->stsd_id = trex->stsd_id;
1952 frag->duration = flags & 0x08 ? get_be32(pb) : trex->duration;
1953 frag->size = flags & 0x10 ? get_be32(pb) : trex->size;
1954 frag->flags = flags & 0x20 ? get_be32(pb) : trex->flags;
1955 dprintf(c->fc, "frag flags 0x%x\n", frag->flags);
1959 static int mov_read_chap(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
1961 c->chapter_track = get_be32(pb);
1965 static int mov_read_trex(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
1969 if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data))
1971 trex = av_realloc(c->trex_data, (c->trex_count+1)*sizeof(*c->trex_data));
1973 return AVERROR(ENOMEM);
1974 c->trex_data = trex;
1975 trex = &c->trex_data[c->trex_count++];
1976 get_byte(pb); /* version */
1977 get_be24(pb); /* flags */
1978 trex->track_id = get_be32(pb);
1979 trex->stsd_id = get_be32(pb);
1980 trex->duration = get_be32(pb);
1981 trex->size = get_be32(pb);
1982 trex->flags = get_be32(pb);
1986 static int mov_read_trun(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
1988 MOVFragment *frag = &c->fragment;
1989 AVStream *st = NULL;
1990 MOVStreamContext *sc;
1993 int data_offset = 0;
1994 unsigned entries, first_sample_flags = frag->flags;
1995 int flags, distance, i;
1997 for (i = 0; i < c->fc->nb_streams; i++) {
1998 if (c->fc->streams[i]->id == frag->track_id) {
1999 st = c->fc->streams[i];
2004 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id);
2008 if (sc->pseudo_stream_id+1 != frag->stsd_id)
2010 get_byte(pb); /* version */
2011 flags = get_be24(pb);
2012 entries = get_be32(pb);
2013 dprintf(c->fc, "flags 0x%x entries %d\n", flags, entries);
2014 if (flags & 0x001) data_offset = get_be32(pb);
2015 if (flags & 0x004) first_sample_flags = get_be32(pb);
2016 if (flags & 0x800) {
2018 if ((uint64_t)entries+sc->ctts_count >= UINT_MAX/sizeof(*sc->ctts_data))
2020 ctts_data = av_realloc(sc->ctts_data,
2021 (entries+sc->ctts_count)*sizeof(*sc->ctts_data));
2023 return AVERROR(ENOMEM);
2024 sc->ctts_data = ctts_data;
2027 offset = frag->base_data_offset + data_offset;
2029 dprintf(c->fc, "first sample flags 0x%x\n", first_sample_flags);
2030 for (i = 0; i < entries; i++) {
2031 unsigned sample_size = frag->size;
2032 int sample_flags = i ? frag->flags : first_sample_flags;
2033 unsigned sample_duration = frag->duration;
2036 if (flags & 0x100) sample_duration = get_be32(pb);
2037 if (flags & 0x200) sample_size = get_be32(pb);
2038 if (flags & 0x400) sample_flags = get_be32(pb);
2039 if (flags & 0x800) {
2040 sc->ctts_data[sc->ctts_count].count = 1;
2041 sc->ctts_data[sc->ctts_count].duration = get_be32(pb);
2044 if ((keyframe = st->codec->codec_type == AVMEDIA_TYPE_AUDIO ||
2045 (flags & 0x004 && !i && !sample_flags) || sample_flags & 0x2000000))
2047 av_add_index_entry(st, offset, dts, sample_size, distance,
2048 keyframe ? AVINDEX_KEYFRAME : 0);
2049 dprintf(c->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
2050 "size %d, distance %d, keyframe %d\n", st->index, sc->sample_count+i,
2051 offset, dts, sample_size, distance, keyframe);
2053 dts += sample_duration;
2054 offset += sample_size;
2056 frag->moof_offset = offset;
2061 /* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
2062 /* like the files created with Adobe Premiere 5.0, for samples see */
2063 /* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
2064 static int mov_read_wide(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
2069 return 0; /* continue */
2070 if (get_be32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
2071 url_fskip(pb, atom.size - 4);
2074 atom.type = get_le32(pb);
2076 if (atom.type != MKTAG('m','d','a','t')) {
2077 url_fskip(pb, atom.size);
2080 err = mov_read_mdat(c, pb, atom);
2084 static int mov_read_cmov(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
2089 uint8_t *moov_data; /* uncompressed data */
2090 long cmov_len, moov_len;
2093 get_be32(pb); /* dcom atom */
2094 if (get_le32(pb) != MKTAG('d','c','o','m'))
2096 if (get_le32(pb) != MKTAG('z','l','i','b')) {
2097 av_log(c->fc, AV_LOG_ERROR, "unknown compression for cmov atom !");
2100 get_be32(pb); /* cmvd atom */
2101 if (get_le32(pb) != MKTAG('c','m','v','d'))
2103 moov_len = get_be32(pb); /* uncompressed size */
2104 cmov_len = atom.size - 6 * 4;
2106 cmov_data = av_malloc(cmov_len);
2108 return AVERROR(ENOMEM);
2109 moov_data = av_malloc(moov_len);
2112 return AVERROR(ENOMEM);
2114 get_buffer(pb, cmov_data, cmov_len);
2115 if(uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
2116 goto free_and_return;
2117 if(init_put_byte(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
2118 goto free_and_return;
2119 atom.type = MKTAG('m','o','o','v');
2120 atom.size = moov_len;
2122 // { int fd = open("/tmp/uncompheader.mov", O_WRONLY | O_CREAT); write(fd, moov_data, moov_len); close(fd); }
2124 ret = mov_read_default(c, &ctx, atom);
2130 av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
2135 /* edit list atom */
2136 static int mov_read_elst(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
2138 MOVStreamContext *sc;
2141 if (c->fc->nb_streams < 1)
2143 sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
2145 get_byte(pb); /* version */
2146 get_be24(pb); /* flags */
2147 edit_count = get_be32(pb); /* entries */
2149 if((uint64_t)edit_count*12+8 > atom.size)
2152 for(i=0; i<edit_count; i++){
2154 int duration = get_be32(pb); /* Track duration */
2155 time = get_be32(pb); /* Media time */
2156 get_be32(pb); /* Media rate */
2157 if (i == 0 && time >= -1) {
2158 sc->time_offset = time != -1 ? time : -duration;
2163 av_log(c->fc, AV_LOG_WARNING, "multiple edit list entries, "
2164 "a/v desync might occur, patch welcome\n");
2166 dprintf(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, edit_count);
2170 static const MOVParseTableEntry mov_default_parse_table[] = {
2171 { MKTAG('a','v','s','s'), mov_read_extradata },
2172 { MKTAG('c','h','p','l'), mov_read_chpl },
2173 { MKTAG('c','o','6','4'), mov_read_stco },
2174 { MKTAG('c','t','t','s'), mov_read_ctts }, /* composition time to sample */
2175 { MKTAG('d','i','n','f'), mov_read_default },
2176 { MKTAG('d','r','e','f'), mov_read_dref },
2177 { MKTAG('e','d','t','s'), mov_read_default },
2178 { MKTAG('e','l','s','t'), mov_read_elst },
2179 { MKTAG('e','n','d','a'), mov_read_enda },
2180 { MKTAG('f','i','e','l'), mov_read_extradata },
2181 { MKTAG('f','t','y','p'), mov_read_ftyp },
2182 { MKTAG('g','l','b','l'), mov_read_glbl },
2183 { MKTAG('h','d','l','r'), mov_read_hdlr },
2184 { MKTAG('i','l','s','t'), mov_read_ilst },
2185 { MKTAG('j','p','2','h'), mov_read_extradata },
2186 { MKTAG('m','d','a','t'), mov_read_mdat },
2187 { MKTAG('m','d','h','d'), mov_read_mdhd },
2188 { MKTAG('m','d','i','a'), mov_read_default },
2189 { MKTAG('m','e','t','a'), mov_read_meta },
2190 { MKTAG('m','i','n','f'), mov_read_default },
2191 { MKTAG('m','o','o','f'), mov_read_moof },
2192 { MKTAG('m','o','o','v'), mov_read_moov },
2193 { MKTAG('m','v','e','x'), mov_read_default },
2194 { MKTAG('m','v','h','d'), mov_read_mvhd },
2195 { MKTAG('S','M','I',' '), mov_read_smi }, /* Sorenson extension ??? */
2196 { MKTAG('a','l','a','c'), mov_read_extradata }, /* alac specific atom */
2197 { MKTAG('a','v','c','C'), mov_read_glbl },
2198 { MKTAG('p','a','s','p'), mov_read_pasp },
2199 { MKTAG('s','t','b','l'), mov_read_default },
2200 { MKTAG('s','t','c','o'), mov_read_stco },
2201 { MKTAG('s','t','p','s'), mov_read_stps },
2202 { MKTAG('s','t','r','f'), mov_read_strf },
2203 { MKTAG('s','t','s','c'), mov_read_stsc },
2204 { MKTAG('s','t','s','d'), mov_read_stsd }, /* sample description */
2205 { MKTAG('s','t','s','s'), mov_read_stss }, /* sync sample */
2206 { MKTAG('s','t','s','z'), mov_read_stsz }, /* sample size */
2207 { MKTAG('s','t','t','s'), mov_read_stts },
2208 { MKTAG('s','t','z','2'), mov_read_stsz }, /* compact sample size */
2209 { MKTAG('t','k','h','d'), mov_read_tkhd }, /* track header */
2210 { MKTAG('t','f','h','d'), mov_read_tfhd }, /* track fragment header */
2211 { MKTAG('t','r','a','k'), mov_read_trak },
2212 { MKTAG('t','r','a','f'), mov_read_default },
2213 { MKTAG('t','r','e','f'), mov_read_default },
2214 { MKTAG('c','h','a','p'), mov_read_chap },
2215 { MKTAG('t','r','e','x'), mov_read_trex },
2216 { MKTAG('t','r','u','n'), mov_read_trun },
2217 { MKTAG('u','d','t','a'), mov_read_default },
2218 { MKTAG('w','a','v','e'), mov_read_wave },
2219 { MKTAG('e','s','d','s'), mov_read_esds },
2220 { MKTAG('d','a','c','3'), mov_read_dac3 }, /* AC-3 info */
2221 { MKTAG('w','i','d','e'), mov_read_wide }, /* place holder */
2222 { MKTAG('c','m','o','v'), mov_read_cmov },
2226 static int mov_probe(AVProbeData *p)
2228 unsigned int offset;
2232 /* check file header */
2235 /* ignore invalid offset */
2236 if ((offset + 8) > (unsigned int)p->buf_size)
2238 tag = AV_RL32(p->buf + offset + 4);
2240 /* check for obvious tags */
2241 case MKTAG('j','P',' ',' '): /* jpeg 2000 signature */
2242 case MKTAG('m','o','o','v'):
2243 case MKTAG('m','d','a','t'):
2244 case MKTAG('p','n','o','t'): /* detect movs with preview pics like ew.mov and april.mov */
2245 case MKTAG('u','d','t','a'): /* Packet Video PVAuthor adds this and a lot of more junk */
2246 case MKTAG('f','t','y','p'):
2247 return AVPROBE_SCORE_MAX;
2248 /* those are more common words, so rate then a bit less */
2249 case MKTAG('e','d','i','w'): /* xdcam files have reverted first tags */
2250 case MKTAG('w','i','d','e'):
2251 case MKTAG('f','r','e','e'):
2252 case MKTAG('j','u','n','k'):
2253 case MKTAG('p','i','c','t'):
2254 return AVPROBE_SCORE_MAX - 5;
2255 case MKTAG(0x82,0x82,0x7f,0x7d):
2256 case MKTAG('s','k','i','p'):
2257 case MKTAG('u','u','i','d'):
2258 case MKTAG('p','r','f','l'):
2259 offset = AV_RB32(p->buf+offset) + offset;
2260 /* if we only find those cause probedata is too small at least rate them */
2261 score = AVPROBE_SCORE_MAX - 50;
2264 /* unrecognized tag */
2271 // must be done after parsing all trak because there's no order requirement
2272 static void mov_read_chapters(AVFormatContext *s)
2274 MOVContext *mov = s->priv_data;
2275 AVStream *st = NULL;
2276 MOVStreamContext *sc;
2278 uint8_t *title = NULL;
2279 int i, len, i8, i16;
2281 for (i = 0; i < s->nb_streams; i++)
2282 if (s->streams[i]->id == mov->chapter_track) {
2287 av_log(s, AV_LOG_ERROR, "Referenced QT chapter track not found\n");
2291 st->discard = AVDISCARD_ALL;
2293 cur_pos = url_ftell(sc->pb);
2295 for (i = 0; i < st->nb_index_entries; i++) {
2296 AVIndexEntry *sample = &st->index_entries[i];
2297 int64_t end = i+1 < st->nb_index_entries ? st->index_entries[i+1].timestamp : st->duration;
2299 if (url_fseek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
2300 av_log(s, AV_LOG_ERROR, "Chapter %d not found in file\n", i);
2304 title = av_malloc(sample->size+2);
2305 get_buffer(sc->pb, title, sample->size);
2307 // the first two bytes are the length of the title
2308 len = AV_RB16(title);
2309 if (len > sample->size-2)
2312 // The samples could theoretically be in any encoding if there's an encd
2313 // atom following, but in practice are only utf-8 or utf-16, distinguished
2314 // instead by the presence of a BOM
2315 if (AV_RB16(title+2) == 0xfeff) {
2316 uint8_t *utf8 = av_malloc(2*len+3);
2322 GET_UTF16(ch, i16 < len ? AV_RB16(title + (i16+=2)) : 0, break;)
2323 PUT_UTF8(ch, tmp, if (i8 < 2*len) utf8[2+i8++] = tmp;)
2330 ff_new_chapter(s, i, st->time_base, sample->timestamp, end, title+2);
2335 url_fseek(sc->pb, cur_pos, SEEK_SET);
2338 static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
2340 MOVContext *mov = s->priv_data;
2341 ByteIOContext *pb = s->pb;
2343 MOVAtom atom = { AV_RL32("root") };
2346 /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
2347 if(!url_is_streamed(pb))
2348 atom.size = url_fsize(pb);
2350 atom.size = INT64_MAX;
2352 /* check MOV header */
2353 if ((err = mov_read_default(mov, pb, atom)) < 0) {
2354 av_log(s, AV_LOG_ERROR, "error reading header: %d\n", err);
2357 if (!mov->found_moov) {
2358 av_log(s, AV_LOG_ERROR, "moov atom not found\n");
2361 dprintf(mov->fc, "on_parse_exit_offset=%lld\n", url_ftell(pb));
2363 if (!url_is_streamed(pb) && mov->chapter_track > 0)
2364 mov_read_chapters(s);
2369 static AVIndexEntry *mov_find_next_sample(AVFormatContext *s, AVStream **st)
2371 AVIndexEntry *sample = NULL;
2372 int64_t best_dts = INT64_MAX;
2374 for (i = 0; i < s->nb_streams; i++) {
2375 AVStream *avst = s->streams[i];
2376 MOVStreamContext *msc = avst->priv_data;
2377 if (msc->pb && msc->current_sample < avst->nb_index_entries) {
2378 AVIndexEntry *current_sample = &avst->index_entries[msc->current_sample];
2379 int64_t dts = av_rescale(current_sample->timestamp, AV_TIME_BASE, msc->time_scale);
2380 dprintf(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
2381 if (!sample || (url_is_streamed(s->pb) && current_sample->pos < sample->pos) ||
2382 (!url_is_streamed(s->pb) &&
2383 ((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb &&
2384 ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
2385 (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) {
2386 sample = current_sample;
2395 static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
2397 MOVContext *mov = s->priv_data;
2398 MOVStreamContext *sc;
2399 AVIndexEntry *sample;
2400 AVStream *st = NULL;
2403 sample = mov_find_next_sample(s, &st);
2405 mov->found_mdat = 0;
2406 if (!url_is_streamed(s->pb) ||
2407 mov_read_default(mov, s->pb, (MOVAtom){ AV_RL32("root"), INT64_MAX }) < 0 ||
2410 dprintf(s, "read fragments, offset 0x%llx\n", url_ftell(s->pb));
2414 /* must be done just before reading, to avoid infinite loop on sample */
2415 sc->current_sample++;
2417 if (st->discard != AVDISCARD_ALL) {
2418 if (url_fseek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
2419 av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
2420 sc->ffindex, sample->pos);
2423 ret = av_get_packet(sc->pb, pkt, sample->size);
2426 #if CONFIG_DV_DEMUXER
2427 if (mov->dv_demux && sc->dv_audio_container) {
2428 dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size);
2431 ret = dv_get_packet(mov->dv_demux, pkt);
2438 pkt->stream_index = sc->ffindex;
2439 pkt->dts = sample->timestamp;
2440 if (sc->ctts_data) {
2441 pkt->pts = pkt->dts + sc->dts_shift + sc->ctts_data[sc->ctts_index].duration;
2442 /* update ctts context */
2444 if (sc->ctts_index < sc->ctts_count &&
2445 sc->ctts_data[sc->ctts_index].count == sc->ctts_sample) {
2447 sc->ctts_sample = 0;
2450 pkt->dts = AV_NOPTS_VALUE;
2452 int64_t next_dts = (sc->current_sample < st->nb_index_entries) ?
2453 st->index_entries[sc->current_sample].timestamp : st->duration;
2454 pkt->duration = next_dts - pkt->dts;
2455 pkt->pts = pkt->dts;
2457 if (st->discard == AVDISCARD_ALL)
2459 pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? AV_PKT_FLAG_KEY : 0;
2460 pkt->pos = sample->pos;
2461 dprintf(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n",
2462 pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
2466 static int mov_seek_stream(AVFormatContext *s, AVStream *st, int64_t timestamp, int flags)
2468 MOVStreamContext *sc = st->priv_data;
2469 int sample, time_sample;
2472 sample = av_index_search_timestamp(st, timestamp, flags);
2473 dprintf(s, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
2474 if (sample < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
2476 if (sample < 0) /* not sure what to do */
2478 sc->current_sample = sample;
2479 dprintf(s, "stream %d, found sample %d\n", st->index, sc->current_sample);
2480 /* adjust ctts index */
2481 if (sc->ctts_data) {
2483 for (i = 0; i < sc->ctts_count; i++) {
2484 int next = time_sample + sc->ctts_data[i].count;
2485 if (next > sc->current_sample) {
2487 sc->ctts_sample = sc->current_sample - time_sample;
2496 static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
2499 int64_t seek_timestamp, timestamp;
2503 if (stream_index >= s->nb_streams)
2505 if (sample_time < 0)
2508 st = s->streams[stream_index];
2509 sample = mov_seek_stream(s, st, sample_time, flags);
2513 /* adjust seek timestamp to found sample timestamp */
2514 seek_timestamp = st->index_entries[sample].timestamp;
2516 for (i = 0; i < s->nb_streams; i++) {
2518 if (stream_index == i)
2521 timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
2522 mov_seek_stream(s, st, timestamp, flags);
2527 static int mov_read_close(AVFormatContext *s)
2529 MOVContext *mov = s->priv_data;
2532 for (i = 0; i < s->nb_streams; i++) {
2533 AVStream *st = s->streams[i];
2534 MOVStreamContext *sc = st->priv_data;
2536 av_freep(&sc->ctts_data);
2537 for (j = 0; j < sc->drefs_count; j++) {
2538 av_freep(&sc->drefs[j].path);
2539 av_freep(&sc->drefs[j].dir);
2541 av_freep(&sc->drefs);
2542 if (sc->pb && sc->pb != s->pb)
2545 av_freep(&st->codec->palctrl);
2548 if (mov->dv_demux) {
2549 for(i = 0; i < mov->dv_fctx->nb_streams; i++) {
2550 av_freep(&mov->dv_fctx->streams[i]->codec);
2551 av_freep(&mov->dv_fctx->streams[i]);
2553 av_freep(&mov->dv_fctx);
2554 av_freep(&mov->dv_demux);
2557 av_freep(&mov->trex_data);
2562 AVInputFormat mov_demuxer = {
2563 "mov,mp4,m4a,3gp,3g2,mj2",
2564 NULL_IF_CONFIG_SMALL("QuickTime/MPEG-4/Motion JPEG 2000 format"),