3 * Copyright (c) 2001 Fabrice Bellard
4 * Copyright (c) 2009 Baptiste Coudurier <baptiste dot coudurier at gmail dot com>
6 * This file is part of FFmpeg.
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
26 //#define MOV_EXPORT_ALL_METADATA
28 #include "libavutil/intreadwrite.h"
29 #include "libavutil/intfloat_readwrite.h"
30 #include "libavutil/mathematics.h"
31 #include "libavutil/avstring.h"
32 #include "libavutil/dict.h"
35 #include "avio_internal.h"
38 #include "libavcodec/get_bits.h"
46 * First version by Francois Revol revol@free.fr
47 * Seek function by Gael Chardon gael.dev@4now.net
50 #include "qtpalette.h"
56 /* those functions parse an atom */
57 /* links atom IDs to parse functions */
58 typedef struct MOVParseTableEntry {
60 int (*parse)(MOVContext *ctx, AVIOContext *pb, MOVAtom atom);
63 static const MOVParseTableEntry mov_default_parse_table[];
65 static int mov_metadata_track_or_disc_number(MOVContext *c, AVIOContext *pb,
66 unsigned len, const char *key)
70 short current, total = 0;
71 avio_rb16(pb); // unknown
72 current = avio_rb16(pb);
74 total = avio_rb16(pb);
76 snprintf(buf, sizeof(buf), "%d", current);
78 snprintf(buf, sizeof(buf), "%d/%d", current, total);
79 av_dict_set(&c->fc->metadata, key, buf, 0);
84 static int mov_metadata_int8_bypass_padding(MOVContext *c, AVIOContext *pb,
85 unsigned len, const char *key)
89 /* bypass padding bytes */
94 snprintf(buf, sizeof(buf), "%d", avio_r8(pb));
95 av_dict_set(&c->fc->metadata, key, buf, 0);
100 static int mov_metadata_int8_no_padding(MOVContext *c, AVIOContext *pb,
101 unsigned len, const char *key)
105 snprintf(buf, sizeof(buf), "%d", avio_r8(pb));
106 av_dict_set(&c->fc->metadata, key, buf, 0);
111 static int mov_metadata_gnre(MOVContext *c, AVIOContext *pb,
112 unsigned len, const char *key)
117 avio_r8(pb); // unknown
120 if (genre < 1 || genre > ID3v1_GENRE_MAX)
122 snprintf(buf, sizeof(buf), "%s", ff_id3v1_genre_str[genre-1]);
123 av_dict_set(&c->fc->metadata, key, buf, 0);
128 static const uint32_t mac_to_unicode[128] = {
129 0x00C4,0x00C5,0x00C7,0x00C9,0x00D1,0x00D6,0x00DC,0x00E1,
130 0x00E0,0x00E2,0x00E4,0x00E3,0x00E5,0x00E7,0x00E9,0x00E8,
131 0x00EA,0x00EB,0x00ED,0x00EC,0x00EE,0x00EF,0x00F1,0x00F3,
132 0x00F2,0x00F4,0x00F6,0x00F5,0x00FA,0x00F9,0x00FB,0x00FC,
133 0x2020,0x00B0,0x00A2,0x00A3,0x00A7,0x2022,0x00B6,0x00DF,
134 0x00AE,0x00A9,0x2122,0x00B4,0x00A8,0x2260,0x00C6,0x00D8,
135 0x221E,0x00B1,0x2264,0x2265,0x00A5,0x00B5,0x2202,0x2211,
136 0x220F,0x03C0,0x222B,0x00AA,0x00BA,0x03A9,0x00E6,0x00F8,
137 0x00BF,0x00A1,0x00AC,0x221A,0x0192,0x2248,0x2206,0x00AB,
138 0x00BB,0x2026,0x00A0,0x00C0,0x00C3,0x00D5,0x0152,0x0153,
139 0x2013,0x2014,0x201C,0x201D,0x2018,0x2019,0x00F7,0x25CA,
140 0x00FF,0x0178,0x2044,0x20AC,0x2039,0x203A,0xFB01,0xFB02,
141 0x2021,0x00B7,0x201A,0x201E,0x2030,0x00C2,0x00CA,0x00C1,
142 0x00CB,0x00C8,0x00CD,0x00CE,0x00CF,0x00CC,0x00D3,0x00D4,
143 0xF8FF,0x00D2,0x00DA,0x00DB,0x00D9,0x0131,0x02C6,0x02DC,
144 0x00AF,0x02D8,0x02D9,0x02DA,0x00B8,0x02DD,0x02DB,0x02C7,
147 static int mov_read_mac_string(MOVContext *c, AVIOContext *pb, int len,
148 char *dst, int dstlen)
151 char *end = dst+dstlen-1;
154 for (i = 0; i < len; i++) {
155 uint8_t t, c = avio_r8(pb);
156 if (c < 0x80 && p < end)
159 PUT_UTF8(mac_to_unicode[c-0x80], t, if (p < end) *p++ = t;);
165 static int mov_read_udta_string(MOVContext *c, AVIOContext *pb, MOVAtom atom)
167 #ifdef MOV_EXPORT_ALL_METADATA
170 char str[1024], key2[16], language[4] = {0};
171 const char *key = NULL;
172 uint16_t str_size, langcode = 0;
173 uint32_t data_type = 0;
174 int (*parse)(MOVContext*, AVIOContext*, unsigned, const char*) = NULL;
177 case MKTAG(0xa9,'n','a','m'): key = "title"; break;
178 case MKTAG(0xa9,'a','u','t'):
179 case MKTAG(0xa9,'A','R','T'): key = "artist"; break;
180 case MKTAG( 'a','A','R','T'): key = "album_artist"; break;
181 case MKTAG(0xa9,'w','r','t'): key = "composer"; break;
182 case MKTAG( 'c','p','r','t'):
183 case MKTAG(0xa9,'c','p','y'): key = "copyright"; break;
184 case MKTAG(0xa9,'g','r','p'): key = "grouping"; break;
185 case MKTAG(0xa9,'l','y','r'): key = "lyrics"; break;
186 case MKTAG(0xa9,'c','m','t'):
187 case MKTAG(0xa9,'i','n','f'): key = "comment"; break;
188 case MKTAG(0xa9,'a','l','b'): key = "album"; break;
189 case MKTAG(0xa9,'d','a','y'): key = "date"; break;
190 case MKTAG(0xa9,'g','e','n'): key = "genre"; break;
191 case MKTAG( 'g','n','r','e'): key = "genre";
192 parse = mov_metadata_gnre; break;
193 case MKTAG(0xa9,'t','o','o'):
194 case MKTAG(0xa9,'s','w','r'): key = "encoder"; break;
195 case MKTAG(0xa9,'e','n','c'): key = "encoder"; break;
196 case MKTAG( 'd','e','s','c'): key = "description";break;
197 case MKTAG( 'l','d','e','s'): key = "synopsis"; break;
198 case MKTAG( 't','v','s','h'): key = "show"; break;
199 case MKTAG( 't','v','e','n'): key = "episode_id";break;
200 case MKTAG( 't','v','n','n'): key = "network"; break;
201 case MKTAG( 't','r','k','n'): key = "track";
202 parse = mov_metadata_track_or_disc_number; break;
203 case MKTAG( 'd','i','s','k'): key = "disc";
204 parse = mov_metadata_track_or_disc_number; break;
205 case MKTAG( 't','v','e','s'): key = "episode_sort";
206 parse = mov_metadata_int8_bypass_padding; break;
207 case MKTAG( 't','v','s','n'): key = "season_number";
208 parse = mov_metadata_int8_bypass_padding; break;
209 case MKTAG( 's','t','i','k'): key = "media_type";
210 parse = mov_metadata_int8_no_padding; break;
211 case MKTAG( 'h','d','v','d'): key = "hd_video";
212 parse = mov_metadata_int8_no_padding; break;
213 case MKTAG( 'p','g','a','p'): key = "gapless_playback";
214 parse = mov_metadata_int8_no_padding; break;
217 if (c->itunes_metadata && atom.size > 8) {
218 int data_size = avio_rb32(pb);
219 int tag = avio_rl32(pb);
220 if (tag == MKTAG('d','a','t','a')) {
221 data_type = avio_rb32(pb); // type
222 avio_rb32(pb); // unknown
223 str_size = data_size - 16;
226 } else if (atom.size > 4 && key && !c->itunes_metadata) {
227 str_size = avio_rb16(pb); // string length
228 langcode = avio_rb16(pb);
229 ff_mov_lang_to_iso639(langcode, language);
232 str_size = atom.size;
234 #ifdef MOV_EXPORT_ALL_METADATA
236 snprintf(tmp_key, 5, "%.4s", (char*)&atom.type);
246 str_size = FFMIN3(sizeof(str)-1, str_size, atom.size);
249 parse(c, pb, str_size, key);
251 if (data_type == 3 || (data_type == 0 && langcode < 0x800)) { // MAC Encoded
252 mov_read_mac_string(c, pb, str_size, str, sizeof(str));
254 avio_read(pb, str, str_size);
257 av_dict_set(&c->fc->metadata, key, str, 0);
258 if (*language && strcmp(language, "und")) {
259 snprintf(key2, sizeof(key2), "%s-%s", key, language);
260 av_dict_set(&c->fc->metadata, key2, str, 0);
263 av_dlog(c->fc, "lang \"%3s\" ", language);
264 av_dlog(c->fc, "tag \"%s\" value \"%s\" atom \"%.4s\" %d %"PRId64"\n",
265 key, str, (char*)&atom.type, str_size, atom.size);
270 static int mov_read_chpl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
273 int i, nb_chapters, str_len, version;
276 if ((atom.size -= 5) < 0)
279 version = avio_r8(pb);
282 avio_rb32(pb); // ???
283 nb_chapters = avio_r8(pb);
285 for (i = 0; i < nb_chapters; i++) {
289 start = avio_rb64(pb);
290 str_len = avio_r8(pb);
292 if ((atom.size -= 9+str_len) < 0)
295 avio_read(pb, str, str_len);
297 avpriv_new_chapter(c->fc, i, (AVRational){1,10000000}, start, AV_NOPTS_VALUE, str);
302 static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom)
304 int64_t total_size = 0;
309 atom.size = INT64_MAX;
310 while (total_size + 8 <= atom.size && !url_feof(pb)) {
311 int (*parse)(MOVContext*, AVIOContext*, MOVAtom) = NULL;
314 if (atom.size >= 8) {
315 a.size = avio_rb32(pb);
316 a.type = avio_rl32(pb);
318 av_dlog(c->fc, "type: %08x '%.4s' parent:'%.4s' sz: %"PRId64" %"PRId64" %"PRId64"\n",
319 a.type, (char*)&a.type, (char*)&atom.type, a.size, total_size, atom.size);
321 if (a.size == 1) { /* 64 bit extended size */
322 a.size = avio_rb64(pb) - 8;
326 a.size = atom.size - total_size;
333 a.size = FFMIN(a.size, atom.size - total_size);
335 for (i = 0; mov_default_parse_table[i].type; i++)
336 if (mov_default_parse_table[i].type == a.type) {
337 parse = mov_default_parse_table[i].parse;
341 // container is user data
342 if (!parse && (atom.type == MKTAG('u','d','t','a') ||
343 atom.type == MKTAG('i','l','s','t')))
344 parse = mov_read_udta_string;
346 if (!parse) { /* skip leaf atoms data */
347 avio_skip(pb, a.size);
349 int64_t start_pos = avio_tell(pb);
351 int err = parse(c, pb, a);
354 if (c->found_moov && c->found_mdat &&
355 (!pb->seekable || start_pos + a.size == avio_size(pb)))
357 left = a.size - avio_tell(pb) + start_pos;
358 if (left > 0) /* skip garbage at atom end */
362 total_size += a.size;
365 if (total_size < atom.size && atom.size < 0x7ffff)
366 avio_skip(pb, atom.size - total_size);
371 static int mov_read_dref(MOVContext *c, AVIOContext *pb, MOVAtom atom)
374 MOVStreamContext *sc;
377 if (c->fc->nb_streams < 1)
379 st = c->fc->streams[c->fc->nb_streams-1];
382 avio_rb32(pb); // version + flags
383 entries = avio_rb32(pb);
384 if (entries >= UINT_MAX / sizeof(*sc->drefs))
386 sc->drefs = av_mallocz(entries * sizeof(*sc->drefs));
388 return AVERROR(ENOMEM);
389 sc->drefs_count = entries;
391 for (i = 0; i < sc->drefs_count; i++) {
392 MOVDref *dref = &sc->drefs[i];
393 uint32_t size = avio_rb32(pb);
394 int64_t next = avio_tell(pb) + size - 4;
399 dref->type = avio_rl32(pb);
400 avio_rb32(pb); // version + flags
401 av_dlog(c->fc, "type %.4s size %d\n", (char*)&dref->type, size);
403 if (dref->type == MKTAG('a','l','i','s') && size > 150) {
404 /* macintosh alias record */
405 uint16_t volume_len, len;
410 volume_len = avio_r8(pb);
411 volume_len = FFMIN(volume_len, 27);
412 avio_read(pb, dref->volume, 27);
413 dref->volume[volume_len] = 0;
414 av_log(c->fc, AV_LOG_DEBUG, "volume %s, len %d\n", dref->volume, volume_len);
419 len = FFMIN(len, 63);
420 avio_read(pb, dref->filename, 63);
421 dref->filename[len] = 0;
422 av_log(c->fc, AV_LOG_DEBUG, "filename %s, len %d\n", dref->filename, len);
426 /* read next level up_from_alias/down_to_target */
427 dref->nlvl_from = avio_rb16(pb);
428 dref->nlvl_to = avio_rb16(pb);
429 av_log(c->fc, AV_LOG_DEBUG, "nlvl from %d, nlvl to %d\n",
430 dref->nlvl_from, dref->nlvl_to);
434 for (type = 0; type != -1 && avio_tell(pb) < next; ) {
435 type = avio_rb16(pb);
437 av_log(c->fc, AV_LOG_DEBUG, "type %d, len %d\n", type, len);
440 if (type == 2) { // absolute path
442 dref->path = av_mallocz(len+1);
444 return AVERROR(ENOMEM);
445 avio_read(pb, dref->path, len);
446 if (len > volume_len && !strncmp(dref->path, dref->volume, volume_len)) {
448 memmove(dref->path, dref->path+volume_len, len);
451 for (j = 0; j < len; j++)
452 if (dref->path[j] == ':')
454 av_log(c->fc, AV_LOG_DEBUG, "path %s\n", dref->path);
455 } else if (type == 0) { // directory name
457 dref->dir = av_malloc(len+1);
459 return AVERROR(ENOMEM);
460 avio_read(pb, dref->dir, len);
462 for (j = 0; j < len; j++)
463 if (dref->dir[j] == ':')
465 av_log(c->fc, AV_LOG_DEBUG, "dir %s\n", dref->dir);
470 avio_seek(pb, next, SEEK_SET);
475 static int mov_read_hdlr(MOVContext *c, AVIOContext *pb, MOVAtom atom)
479 uint32_t av_unused ctype;
483 if (c->fc->nb_streams < 1) // meta before first trak
486 st = c->fc->streams[c->fc->nb_streams-1];
488 avio_r8(pb); /* version */
489 avio_rb24(pb); /* flags */
492 ctype = avio_rl32(pb);
493 type = avio_rl32(pb); /* component subtype */
495 av_dlog(c->fc, "ctype= %.4s (0x%08x)\n", (char*)&ctype, ctype);
496 av_dlog(c->fc, "stype= %.4s\n", (char*)&type);
498 if (type == MKTAG('v','i','d','e'))
499 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
500 else if (type == MKTAG('s','o','u','n'))
501 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
502 else if (type == MKTAG('m','1','a',' '))
503 st->codec->codec_id = CODEC_ID_MP2;
504 else if ((type == MKTAG('s','u','b','p')) || (type == MKTAG('c','l','c','p')))
505 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
507 avio_rb32(pb); /* component manufacture */
508 avio_rb32(pb); /* component flags */
509 avio_rb32(pb); /* component flags mask */
511 title_size = atom.size - 24;
512 if (title_size > 0) {
513 title_str = av_malloc(title_size + 1); /* Add null terminator */
515 return AVERROR(ENOMEM);
516 avio_read(pb, title_str, title_size);
517 title_str[title_size] = 0;
518 av_dict_set(&st->metadata, "handler_name", title_str, 0);
519 av_freep(&title_str);
525 int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb, MOVAtom atom)
530 if (fc->nb_streams < 1)
532 st = fc->streams[fc->nb_streams-1];
534 avio_rb32(pb); /* version + flags */
535 ff_mp4_read_descr(fc, pb, &tag);
536 if (tag == MP4ESDescrTag) {
537 ff_mp4_parse_es_descr(pb, NULL);
539 avio_rb16(pb); /* ID */
541 ff_mp4_read_descr(fc, pb, &tag);
542 if (tag == MP4DecConfigDescrTag)
543 ff_mp4_read_dec_config_descr(fc, st, pb);
547 static int mov_read_esds(MOVContext *c, AVIOContext *pb, MOVAtom atom)
549 return ff_mov_read_esds(c->fc, pb, atom);
552 static int mov_read_dac3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
555 int ac3info, acmod, lfeon, bsmod;
557 if (c->fc->nb_streams < 1)
559 st = c->fc->streams[c->fc->nb_streams-1];
561 ac3info = avio_rb24(pb);
562 bsmod = (ac3info >> 14) & 0x7;
563 acmod = (ac3info >> 11) & 0x7;
564 lfeon = (ac3info >> 10) & 0x1;
565 st->codec->channels = ((int[]){2,1,2,3,3,4,4,5})[acmod] + lfeon;
566 st->codec->audio_service_type = bsmod;
567 if (st->codec->channels > 1 && bsmod == 0x7)
568 st->codec->audio_service_type = AV_AUDIO_SERVICE_TYPE_KARAOKE;
573 static int mov_read_wfex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
577 if (c->fc->nb_streams < 1)
579 st = c->fc->streams[c->fc->nb_streams-1];
581 ff_get_wav_header(pb, st->codec, atom.size);
586 static int mov_read_pasp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
588 const int num = avio_rb32(pb);
589 const int den = avio_rb32(pb);
592 if (c->fc->nb_streams < 1)
594 st = c->fc->streams[c->fc->nb_streams-1];
596 if ((st->sample_aspect_ratio.den != 1 || st->sample_aspect_ratio.num) && // default
597 (den != st->sample_aspect_ratio.den || num != st->sample_aspect_ratio.num)) {
598 av_log(c->fc, AV_LOG_WARNING,
599 "sample aspect ratio already set to %d:%d, ignoring 'pasp' atom (%d:%d)\n",
600 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
602 } else if (den != 0) {
603 st->sample_aspect_ratio.num = num;
604 st->sample_aspect_ratio.den = den;
609 /* this atom contains actual media data */
610 static int mov_read_mdat(MOVContext *c, AVIOContext *pb, MOVAtom atom)
612 if (atom.size == 0) /* wrong one (MP4) */
615 return 0; /* now go for moov */
618 /* read major brand, minor version and compatible brands and store them as metadata */
619 static int mov_read_ftyp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
623 char minor_ver_str[11]; /* 32 bit integer -> 10 digits + null */
624 char* comp_brands_str;
625 uint8_t type[5] = {0};
627 avio_read(pb, type, 4);
628 if (strcmp(type, "qt "))
630 av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
631 av_dict_set(&c->fc->metadata, "major_brand", type, 0);
632 minor_ver = avio_rb32(pb); /* minor version */
633 snprintf(minor_ver_str, sizeof(minor_ver_str), "%d", minor_ver);
634 av_dict_set(&c->fc->metadata, "minor_version", minor_ver_str, 0);
636 comp_brand_size = atom.size - 8;
637 if (comp_brand_size < 0)
639 comp_brands_str = av_malloc(comp_brand_size + 1); /* Add null terminator */
640 if (!comp_brands_str)
641 return AVERROR(ENOMEM);
642 avio_read(pb, comp_brands_str, comp_brand_size);
643 comp_brands_str[comp_brand_size] = 0;
644 av_dict_set(&c->fc->metadata, "compatible_brands", comp_brands_str, 0);
645 av_freep(&comp_brands_str);
650 /* this atom should contain all header atoms */
651 static int mov_read_moov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
653 if (mov_read_default(c, pb, atom) < 0)
655 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
656 /* so we don't parse the whole file if over a network */
658 return 0; /* now go for mdat */
661 static int mov_read_moof(MOVContext *c, AVIOContext *pb, MOVAtom atom)
663 c->fragment.moof_offset = avio_tell(pb) - 8;
664 av_dlog(c->fc, "moof offset %"PRIx64"\n", c->fragment.moof_offset);
665 return mov_read_default(c, pb, atom);
668 static void mov_metadata_creation_time(AVDictionary **metadata, time_t time)
673 time -= 2082844800; /* seconds between 1904-01-01 and Epoch */
676 strftime(buffer, sizeof(buffer), "%Y-%m-%d %H:%M:%S", ptm);
677 av_dict_set(metadata, "creation_time", buffer, 0);
681 static int mov_read_mdhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
684 MOVStreamContext *sc;
686 char language[4] = {0};
688 time_t creation_time;
690 if (c->fc->nb_streams < 1)
692 st = c->fc->streams[c->fc->nb_streams-1];
695 version = avio_r8(pb);
697 return -1; /* unsupported */
699 avio_rb24(pb); /* flags */
701 creation_time = avio_rb64(pb);
704 creation_time = avio_rb32(pb);
705 avio_rb32(pb); /* modification time */
707 mov_metadata_creation_time(&st->metadata, creation_time);
709 sc->time_scale = avio_rb32(pb);
710 st->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
712 lang = avio_rb16(pb); /* language */
713 if (ff_mov_lang_to_iso639(lang, language))
714 av_dict_set(&st->metadata, "language", language, 0);
715 avio_rb16(pb); /* quality */
720 static int mov_read_mvhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
722 time_t creation_time;
723 int version = avio_r8(pb); /* version */
724 avio_rb24(pb); /* flags */
727 creation_time = avio_rb64(pb);
730 creation_time = avio_rb32(pb);
731 avio_rb32(pb); /* modification time */
733 mov_metadata_creation_time(&c->fc->metadata, creation_time);
734 c->time_scale = avio_rb32(pb); /* time scale */
736 av_dlog(c->fc, "time scale = %i\n", c->time_scale);
738 c->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
739 avio_rb32(pb); /* preferred scale */
741 avio_rb16(pb); /* preferred volume */
743 avio_skip(pb, 10); /* reserved */
745 avio_skip(pb, 36); /* display matrix */
747 avio_rb32(pb); /* preview time */
748 avio_rb32(pb); /* preview duration */
749 avio_rb32(pb); /* poster time */
750 avio_rb32(pb); /* selection time */
751 avio_rb32(pb); /* selection duration */
752 avio_rb32(pb); /* current time */
753 avio_rb32(pb); /* next track ID */
758 static int mov_read_smi(MOVContext *c, AVIOContext *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 // currently SVQ3 decoder expect full STSD header - so let's fake it
770 // this should be fixed and just SMI header should be passed
771 av_free(st->codec->extradata);
772 st->codec->extradata = av_mallocz(atom.size + 0x5a + FF_INPUT_BUFFER_PADDING_SIZE);
773 if (!st->codec->extradata)
774 return AVERROR(ENOMEM);
775 st->codec->extradata_size = 0x5a + atom.size;
776 memcpy(st->codec->extradata, "SVQ3", 4); // fake
777 avio_read(pb, st->codec->extradata + 0x5a, atom.size);
778 av_dlog(c->fc, "Reading SMI %"PRId64" %s\n", atom.size, st->codec->extradata + 0x5a);
782 static int mov_read_enda(MOVContext *c, AVIOContext *pb, MOVAtom atom)
787 if (c->fc->nb_streams < 1)
789 st = c->fc->streams[c->fc->nb_streams-1];
791 little_endian = avio_rb16(pb) & 0xFF;
792 av_dlog(c->fc, "enda %d\n", little_endian);
793 if (little_endian == 1) {
794 switch (st->codec->codec_id) {
795 case CODEC_ID_PCM_S24BE:
796 st->codec->codec_id = CODEC_ID_PCM_S24LE;
798 case CODEC_ID_PCM_S32BE:
799 st->codec->codec_id = CODEC_ID_PCM_S32LE;
801 case CODEC_ID_PCM_F32BE:
802 st->codec->codec_id = CODEC_ID_PCM_F32LE;
804 case CODEC_ID_PCM_F64BE:
805 st->codec->codec_id = CODEC_ID_PCM_F64LE;
814 /* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
815 static int mov_read_extradata(MOVContext *c, AVIOContext *pb, MOVAtom atom,
816 enum CodecID codec_id)
822 if (c->fc->nb_streams < 1) // will happen with jp2 files
824 st= c->fc->streams[c->fc->nb_streams-1];
826 if (st->codec->codec_id != codec_id)
827 return 0; /* unexpected codec_id - don't mess with extradata */
829 size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
830 if (size > INT_MAX || (uint64_t)atom.size > INT_MAX)
832 buf= av_realloc(st->codec->extradata, size);
835 st->codec->extradata= buf;
836 buf+= st->codec->extradata_size;
837 st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE;
838 AV_WB32( buf , atom.size + 8);
839 AV_WL32( buf + 4, atom.type);
840 avio_read(pb, buf + 8, atom.size);
844 /* wrapper functions for reading ALAC/AVS/MJPEG/MJPEG2000 extradata atoms only for those codecs */
845 static int mov_read_alac(MOVContext *c, AVIOContext *pb, MOVAtom atom)
847 return mov_read_extradata(c, pb, atom, CODEC_ID_ALAC);
850 static int mov_read_avss(MOVContext *c, AVIOContext *pb, MOVAtom atom)
852 return mov_read_extradata(c, pb, atom, CODEC_ID_AVS);
855 static int mov_read_fiel(MOVContext *c, AVIOContext *pb, MOVAtom atom)
857 return mov_read_extradata(c, pb, atom, CODEC_ID_MJPEG);
860 static int mov_read_jp2h(MOVContext *c, AVIOContext *pb, MOVAtom atom)
862 return mov_read_extradata(c, pb, atom, CODEC_ID_JPEG2000);
865 static int mov_read_wave(MOVContext *c, AVIOContext *pb, MOVAtom atom)
869 if (c->fc->nb_streams < 1)
871 st = c->fc->streams[c->fc->nb_streams-1];
873 if ((uint64_t)atom.size > (1<<30))
876 if (st->codec->codec_id == CODEC_ID_QDM2 || st->codec->codec_id == CODEC_ID_QDMC) {
877 // pass all frma atom to codec, needed at least for QDMC and QDM2
878 av_free(st->codec->extradata);
879 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
880 if (!st->codec->extradata)
881 return AVERROR(ENOMEM);
882 st->codec->extradata_size = atom.size;
883 avio_read(pb, st->codec->extradata, atom.size);
884 } else if (atom.size > 8) { /* to read frma, esds atoms */
885 if (mov_read_default(c, pb, atom) < 0)
888 avio_skip(pb, atom.size);
893 * This function reads atom content and puts data in extradata without tag
894 * nor size unlike mov_read_extradata.
896 static int mov_read_glbl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
900 if (c->fc->nb_streams < 1)
902 st = c->fc->streams[c->fc->nb_streams-1];
904 if ((uint64_t)atom.size > (1<<30))
907 av_free(st->codec->extradata);
908 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
909 if (!st->codec->extradata)
910 return AVERROR(ENOMEM);
911 st->codec->extradata_size = atom.size;
912 avio_read(pb, st->codec->extradata, atom.size);
917 * An strf atom is a BITMAPINFOHEADER struct. This struct is 40 bytes itself,
918 * but can have extradata appended at the end after the 40 bytes belonging
921 static int mov_read_strf(MOVContext *c, AVIOContext *pb, MOVAtom atom)
925 if (c->fc->nb_streams < 1)
929 st = c->fc->streams[c->fc->nb_streams-1];
931 if ((uint64_t)atom.size > (1<<30))
934 av_free(st->codec->extradata);
935 st->codec->extradata = av_mallocz(atom.size - 40 + FF_INPUT_BUFFER_PADDING_SIZE);
936 if (!st->codec->extradata)
937 return AVERROR(ENOMEM);
938 st->codec->extradata_size = atom.size - 40;
940 avio_read(pb, st->codec->extradata, atom.size - 40);
944 static int mov_read_stco(MOVContext *c, AVIOContext *pb, MOVAtom atom)
947 MOVStreamContext *sc;
948 unsigned int i, entries;
950 if (c->fc->nb_streams < 1)
952 st = c->fc->streams[c->fc->nb_streams-1];
955 avio_r8(pb); /* version */
956 avio_rb24(pb); /* flags */
958 entries = avio_rb32(pb);
960 if (entries >= UINT_MAX/sizeof(int64_t))
963 sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
964 if (!sc->chunk_offsets)
965 return AVERROR(ENOMEM);
966 sc->chunk_count = entries;
968 if (atom.type == MKTAG('s','t','c','o'))
969 for (i=0; i<entries; i++)
970 sc->chunk_offsets[i] = avio_rb32(pb);
971 else if (atom.type == MKTAG('c','o','6','4'))
972 for (i=0; i<entries; i++)
973 sc->chunk_offsets[i] = avio_rb64(pb);
981 * Compute codec id for 'lpcm' tag.
982 * See CoreAudioTypes and AudioStreamBasicDescription at Apple.
984 enum CodecID ff_mov_get_lpcm_codec_id(int bps, int flags)
986 if (flags & 1) { // floating point
987 if (flags & 2) { // big endian
988 if (bps == 32) return CODEC_ID_PCM_F32BE;
989 else if (bps == 64) return CODEC_ID_PCM_F64BE;
991 if (bps == 32) return CODEC_ID_PCM_F32LE;
992 else if (bps == 64) return CODEC_ID_PCM_F64LE;
998 if (flags & 4) return CODEC_ID_PCM_S8;
999 else return CODEC_ID_PCM_U8;
1000 else if (bps == 16) return CODEC_ID_PCM_S16BE;
1001 else if (bps == 24) return CODEC_ID_PCM_S24BE;
1002 else if (bps == 32) return CODEC_ID_PCM_S32BE;
1005 if (flags & 4) return CODEC_ID_PCM_S8;
1006 else return CODEC_ID_PCM_U8;
1007 else if (bps == 16) return CODEC_ID_PCM_S16LE;
1008 else if (bps == 24) return CODEC_ID_PCM_S24LE;
1009 else if (bps == 32) return CODEC_ID_PCM_S32LE;
1012 return CODEC_ID_NONE;
1015 int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries)
1018 MOVStreamContext *sc;
1019 int j, pseudo_stream_id;
1021 if (c->fc->nb_streams < 1)
1023 st = c->fc->streams[c->fc->nb_streams-1];
1026 for (pseudo_stream_id=0; pseudo_stream_id<entries; pseudo_stream_id++) {
1027 //Parsing Sample description table
1030 MOVAtom a = { AV_RL32("stsd") };
1031 int64_t start_pos = avio_tell(pb);
1032 int size = avio_rb32(pb); /* size */
1033 uint32_t format = avio_rl32(pb); /* data format */
1036 avio_rb32(pb); /* reserved */
1037 avio_rb16(pb); /* reserved */
1038 dref_id = avio_rb16(pb);
1041 if (st->codec->codec_tag &&
1042 st->codec->codec_tag != format &&
1043 (c->fc->video_codec_id ? ff_codec_get_id(codec_movvideo_tags, format) != c->fc->video_codec_id
1044 : st->codec->codec_tag != MKTAG('j','p','e','g'))
1046 /* Multiple fourcc, we skip JPEG. This is not correct, we should
1047 * export it as a separate AVStream but this needs a few changes
1048 * in the MOV demuxer, patch welcome. */
1050 av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n");
1051 avio_skip(pb, size - (avio_tell(pb) - start_pos));
1054 /* we cannot demux concatenated h264 streams because of different extradata */
1055 if (st->codec->codec_tag && st->codec->codec_tag == AV_RL32("avc1"))
1057 sc->pseudo_stream_id = st->codec->codec_tag ? -1 : pseudo_stream_id;
1058 sc->dref_id= dref_id;
1060 st->codec->codec_tag = format;
1061 id = ff_codec_get_id(codec_movaudio_tags, format);
1062 if (id<=0 && ((format&0xFFFF) == 'm'+('s'<<8) || (format&0xFFFF) == 'T'+('S'<<8)))
1063 id = ff_codec_get_id(ff_codec_wav_tags, av_bswap32(format)&0xFFFF);
1065 if (st->codec->codec_type != AVMEDIA_TYPE_VIDEO && id > 0) {
1066 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
1067 } else if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO && /* do not overwrite codec type */
1068 format && format != MKTAG('m','p','4','s')) { /* skip old asf mpeg4 tag */
1069 id = ff_codec_get_id(codec_movvideo_tags, format);
1071 id = ff_codec_get_id(ff_codec_bmp_tags, format);
1073 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
1074 else if (st->codec->codec_type == AVMEDIA_TYPE_DATA){
1075 id = ff_codec_get_id(ff_codec_movsubtitle_tags, format);
1077 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
1081 av_dlog(c->fc, "size=%d 4CC= %c%c%c%c codec_type=%d\n", size,
1082 (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff,
1083 (format >> 24) & 0xff, st->codec->codec_type);
1085 if (st->codec->codec_type==AVMEDIA_TYPE_VIDEO) {
1086 unsigned int color_depth, len;
1087 int color_greyscale;
1089 st->codec->codec_id = id;
1090 avio_rb16(pb); /* version */
1091 avio_rb16(pb); /* revision level */
1092 avio_rb32(pb); /* vendor */
1093 avio_rb32(pb); /* temporal quality */
1094 avio_rb32(pb); /* spatial quality */
1096 st->codec->width = avio_rb16(pb); /* width */
1097 st->codec->height = avio_rb16(pb); /* height */
1099 avio_rb32(pb); /* horiz resolution */
1100 avio_rb32(pb); /* vert resolution */
1101 avio_rb32(pb); /* data size, always 0 */
1102 avio_rb16(pb); /* frames per samples */
1104 len = avio_r8(pb); /* codec name, pascal string */
1107 mov_read_mac_string(c, pb, len, st->codec->codec_name, 32);
1109 avio_skip(pb, 31 - len);
1110 /* codec_tag YV12 triggers an UV swap in rawdec.c */
1111 if (!memcmp(st->codec->codec_name, "Planar Y'CbCr 8-bit 4:2:0", 25))
1112 st->codec->codec_tag=MKTAG('I', '4', '2', '0');
1114 st->codec->bits_per_coded_sample = avio_rb16(pb); /* depth */
1115 st->codec->color_table_id = avio_rb16(pb); /* colortable id */
1116 av_dlog(c->fc, "depth %d, ctab id %d\n",
1117 st->codec->bits_per_coded_sample, st->codec->color_table_id);
1118 /* figure out the palette situation */
1119 color_depth = st->codec->bits_per_coded_sample & 0x1F;
1120 color_greyscale = st->codec->bits_per_coded_sample & 0x20;
1122 /* if the depth is 2, 4, or 8 bpp, file is palettized */
1123 if ((color_depth == 2) || (color_depth == 4) ||
1124 (color_depth == 8)) {
1125 /* for palette traversal */
1126 unsigned int color_start, color_count, color_end;
1127 unsigned char r, g, b;
1129 if (color_greyscale) {
1130 int color_index, color_dec;
1131 /* compute the greyscale palette */
1132 st->codec->bits_per_coded_sample = color_depth;
1133 color_count = 1 << color_depth;
1135 color_dec = 256 / (color_count - 1);
1136 for (j = 0; j < color_count; j++) {
1137 if (id == CODEC_ID_CINEPAK){
1138 r = g = b = color_count - 1 - color_index;
1140 r = g = b = color_index;
1142 (r << 16) | (g << 8) | (b);
1143 color_index -= color_dec;
1144 if (color_index < 0)
1147 } else if (st->codec->color_table_id) {
1148 const uint8_t *color_table;
1149 /* if flag bit 3 is set, use the default palette */
1150 color_count = 1 << color_depth;
1151 if (color_depth == 2)
1152 color_table = ff_qt_default_palette_4;
1153 else if (color_depth == 4)
1154 color_table = ff_qt_default_palette_16;
1156 color_table = ff_qt_default_palette_256;
1158 for (j = 0; j < color_count; j++) {
1159 r = color_table[j * 3 + 0];
1160 g = color_table[j * 3 + 1];
1161 b = color_table[j * 3 + 2];
1163 (r << 16) | (g << 8) | (b);
1166 /* load the palette from the file */
1167 color_start = avio_rb32(pb);
1168 color_count = avio_rb16(pb);
1169 color_end = avio_rb16(pb);
1170 if ((color_start <= 255) &&
1171 (color_end <= 255)) {
1172 for (j = color_start; j <= color_end; j++) {
1173 /* each R, G, or B component is 16 bits;
1174 * only use the top 8 bits; skip alpha bytes
1185 (r << 16) | (g << 8) | (b);
1189 sc->has_palette = 1;
1191 } else if (st->codec->codec_type==AVMEDIA_TYPE_AUDIO) {
1192 int bits_per_sample, flags;
1193 uint16_t version = avio_rb16(pb);
1195 st->codec->codec_id = id;
1196 avio_rb16(pb); /* revision level */
1197 avio_rb32(pb); /* vendor */
1199 st->codec->channels = avio_rb16(pb); /* channel count */
1200 av_dlog(c->fc, "audio channels %d\n", st->codec->channels);
1201 st->codec->bits_per_coded_sample = avio_rb16(pb); /* sample size */
1203 sc->audio_cid = avio_rb16(pb);
1204 avio_rb16(pb); /* packet size = 0 */
1206 st->codec->sample_rate = ((avio_rb32(pb) >> 16));
1208 //Read QT version 1 fields. In version 0 these do not exist.
1209 av_dlog(c->fc, "version =%d, isom =%d\n",version,c->isom);
1212 sc->samples_per_frame = avio_rb32(pb);
1213 avio_rb32(pb); /* bytes per packet */
1214 sc->bytes_per_frame = avio_rb32(pb);
1215 avio_rb32(pb); /* bytes per sample */
1216 } else if (version==2) {
1217 avio_rb32(pb); /* sizeof struct only */
1218 st->codec->sample_rate = av_int2dbl(avio_rb64(pb)); /* float 64 */
1219 st->codec->channels = avio_rb32(pb);
1220 avio_rb32(pb); /* always 0x7F000000 */
1221 st->codec->bits_per_coded_sample = avio_rb32(pb); /* bits per channel if sound is uncompressed */
1222 flags = avio_rb32(pb); /* lpcm format specific flag */
1223 sc->bytes_per_frame = avio_rb32(pb); /* bytes per audio packet if constant */
1224 sc->samples_per_frame = avio_rb32(pb); /* lpcm frames per audio packet if constant */
1225 if (format == MKTAG('l','p','c','m'))
1226 st->codec->codec_id = ff_mov_get_lpcm_codec_id(st->codec->bits_per_coded_sample, flags);
1230 switch (st->codec->codec_id) {
1231 case CODEC_ID_PCM_S8:
1232 case CODEC_ID_PCM_U8:
1233 if (st->codec->bits_per_coded_sample == 16)
1234 st->codec->codec_id = CODEC_ID_PCM_S16BE;
1236 case CODEC_ID_PCM_S16LE:
1237 case CODEC_ID_PCM_S16BE:
1238 if (st->codec->bits_per_coded_sample == 8)
1239 st->codec->codec_id = CODEC_ID_PCM_S8;
1240 else if (st->codec->bits_per_coded_sample == 24)
1241 st->codec->codec_id =
1242 st->codec->codec_id == CODEC_ID_PCM_S16BE ?
1243 CODEC_ID_PCM_S24BE : CODEC_ID_PCM_S24LE;
1245 /* set values for old format before stsd version 1 appeared */
1246 case CODEC_ID_MACE3:
1247 sc->samples_per_frame = 6;
1248 sc->bytes_per_frame = 2*st->codec->channels;
1250 case CODEC_ID_MACE6:
1251 sc->samples_per_frame = 6;
1252 sc->bytes_per_frame = 1*st->codec->channels;
1254 case CODEC_ID_ADPCM_IMA_QT:
1255 sc->samples_per_frame = 64;
1256 sc->bytes_per_frame = 34*st->codec->channels;
1259 sc->samples_per_frame = 160;
1260 sc->bytes_per_frame = 33;
1266 bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
1267 if (bits_per_sample) {
1268 st->codec->bits_per_coded_sample = bits_per_sample;
1269 sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
1271 } else if (st->codec->codec_type==AVMEDIA_TYPE_SUBTITLE){
1272 // ttxt stsd contains display flags, justification, background
1273 // color, fonts, and default styles, so fake an atom to read it
1274 MOVAtom fake_atom = { .size = size - (avio_tell(pb) - start_pos) };
1275 if (format != AV_RL32("mp4s")) // mp4s contains a regular esds atom
1276 mov_read_glbl(c, pb, fake_atom);
1277 st->codec->codec_id= id;
1278 st->codec->width = sc->width;
1279 st->codec->height = sc->height;
1281 if (st->codec->codec_tag == MKTAG('t','m','c','d')) {
1283 avio_rb32(pb); /* reserved */
1284 val = avio_rb32(pb); /* flags */
1286 st->codec->flags2 |= CODEC_FLAG2_DROP_FRAME_TIMECODE;
1289 st->codec->time_base.den = avio_r8(pb);
1290 st->codec->time_base.num = 1;
1292 /* other codec type, just skip (rtp, mp4s, ...) */
1293 avio_skip(pb, size - (avio_tell(pb) - start_pos));
1295 /* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */
1296 a.size = size - (avio_tell(pb) - start_pos);
1298 if (mov_read_default(c, pb, a) < 0)
1300 } else if (a.size > 0)
1301 avio_skip(pb, a.size);
1304 if (st->codec->codec_type==AVMEDIA_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1)
1305 st->codec->sample_rate= sc->time_scale;
1307 /* special codec parameters handling */
1308 switch (st->codec->codec_id) {
1309 #if CONFIG_DV_DEMUXER
1310 case CODEC_ID_DVAUDIO:
1311 c->dv_fctx = avformat_alloc_context();
1312 c->dv_demux = avpriv_dv_init_demux(c->dv_fctx);
1314 av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
1317 sc->dv_audio_container = 1;
1318 st->codec->codec_id = CODEC_ID_PCM_S16LE;
1321 /* no ifdef since parameters are always those */
1322 case CODEC_ID_QCELP:
1323 // force sample rate for qcelp when not stored in mov
1324 if (st->codec->codec_tag != MKTAG('Q','c','l','p'))
1325 st->codec->sample_rate = 8000;
1326 st->codec->frame_size= 160;
1327 st->codec->channels= 1; /* really needed */
1329 case CODEC_ID_AMR_NB:
1330 st->codec->channels= 1; /* really needed */
1331 /* force sample rate for amr, stsd in 3gp does not store sample rate */
1332 st->codec->sample_rate = 8000;
1333 /* force frame_size, too, samples_per_frame isn't always set properly */
1334 st->codec->frame_size = 160;
1336 case CODEC_ID_AMR_WB:
1337 st->codec->channels = 1;
1338 st->codec->sample_rate = 16000;
1339 st->codec->frame_size = 320;
1343 st->codec->codec_type = AVMEDIA_TYPE_AUDIO; /* force type after stsd for m1a hdlr */
1344 st->need_parsing = AVSTREAM_PARSE_FULL;
1347 case CODEC_ID_ADPCM_MS:
1348 case CODEC_ID_ADPCM_IMA_WAV:
1349 st->codec->frame_size = sc->samples_per_frame;
1350 st->codec->block_align = sc->bytes_per_frame;
1353 if (st->codec->extradata_size == 36) {
1354 st->codec->frame_size = AV_RB32(st->codec->extradata+12);
1355 st->codec->channels = AV_RB8 (st->codec->extradata+21);
1356 st->codec->sample_rate = AV_RB32(st->codec->extradata+32);
1360 st->need_parsing = AVSTREAM_PARSE_FULL;
1362 case CODEC_ID_MPEG1VIDEO:
1363 st->need_parsing = AVSTREAM_PARSE_FULL;
1372 static int mov_read_stsd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1376 avio_r8(pb); /* version */
1377 avio_rb24(pb); /* flags */
1378 entries = avio_rb32(pb);
1380 return ff_mov_read_stsd_entries(c, pb, entries);
1383 static int mov_read_stsc(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1386 MOVStreamContext *sc;
1387 unsigned int i, entries;
1389 if (c->fc->nb_streams < 1)
1391 st = c->fc->streams[c->fc->nb_streams-1];
1394 avio_r8(pb); /* version */
1395 avio_rb24(pb); /* flags */
1397 entries = avio_rb32(pb);
1399 av_dlog(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
1401 if (entries >= UINT_MAX / sizeof(*sc->stsc_data))
1403 sc->stsc_data = av_malloc(entries * sizeof(*sc->stsc_data));
1405 return AVERROR(ENOMEM);
1406 sc->stsc_count = entries;
1408 for (i=0; i<entries; i++) {
1409 sc->stsc_data[i].first = avio_rb32(pb);
1410 sc->stsc_data[i].count = avio_rb32(pb);
1411 sc->stsc_data[i].id = avio_rb32(pb);
1416 static int mov_read_stps(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1419 MOVStreamContext *sc;
1420 unsigned i, entries;
1422 if (c->fc->nb_streams < 1)
1424 st = c->fc->streams[c->fc->nb_streams-1];
1427 avio_rb32(pb); // version + flags
1429 entries = avio_rb32(pb);
1430 if (entries >= UINT_MAX / sizeof(*sc->stps_data))
1432 sc->stps_data = av_malloc(entries * sizeof(*sc->stps_data));
1434 return AVERROR(ENOMEM);
1435 sc->stps_count = entries;
1437 for (i = 0; i < entries; i++) {
1438 sc->stps_data[i] = avio_rb32(pb);
1439 //av_dlog(c->fc, "stps %d\n", sc->stps_data[i]);
1445 static int mov_read_stss(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1448 MOVStreamContext *sc;
1449 unsigned int i, entries;
1451 if (c->fc->nb_streams < 1)
1453 st = c->fc->streams[c->fc->nb_streams-1];
1456 avio_r8(pb); /* version */
1457 avio_rb24(pb); /* flags */
1459 entries = avio_rb32(pb);
1461 av_dlog(c->fc, "keyframe_count = %d\n", entries);
1463 if (entries >= UINT_MAX / sizeof(int))
1465 sc->keyframes = av_malloc(entries * sizeof(int));
1467 return AVERROR(ENOMEM);
1468 sc->keyframe_count = entries;
1470 for (i=0; i<entries; i++) {
1471 sc->keyframes[i] = avio_rb32(pb);
1472 //av_dlog(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
1477 static int mov_read_stsz(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1480 MOVStreamContext *sc;
1481 unsigned int i, entries, sample_size, field_size, num_bytes;
1485 if (c->fc->nb_streams < 1)
1487 st = c->fc->streams[c->fc->nb_streams-1];
1490 avio_r8(pb); /* version */
1491 avio_rb24(pb); /* flags */
1493 if (atom.type == MKTAG('s','t','s','z')) {
1494 sample_size = avio_rb32(pb);
1495 if (!sc->sample_size) /* do not overwrite value computed in stsd */
1496 sc->sample_size = sample_size;
1500 avio_rb24(pb); /* reserved */
1501 field_size = avio_r8(pb);
1503 entries = avio_rb32(pb);
1505 av_dlog(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, entries);
1507 sc->sample_count = entries;
1511 if (field_size != 4 && field_size != 8 && field_size != 16 && field_size != 32) {
1512 av_log(c->fc, AV_LOG_ERROR, "Invalid sample field size %d\n", field_size);
1516 if (entries >= UINT_MAX / sizeof(int) || entries >= (UINT_MAX - 4) / field_size)
1518 sc->sample_sizes = av_malloc(entries * sizeof(int));
1519 if (!sc->sample_sizes)
1520 return AVERROR(ENOMEM);
1522 num_bytes = (entries*field_size+4)>>3;
1524 buf = av_malloc(num_bytes+FF_INPUT_BUFFER_PADDING_SIZE);
1526 av_freep(&sc->sample_sizes);
1527 return AVERROR(ENOMEM);
1530 if (avio_read(pb, buf, num_bytes) < num_bytes) {
1531 av_freep(&sc->sample_sizes);
1536 init_get_bits(&gb, buf, 8*num_bytes);
1538 for (i=0; i<entries; i++)
1539 sc->sample_sizes[i] = get_bits_long(&gb, field_size);
1545 static int mov_read_stts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1548 MOVStreamContext *sc;
1549 unsigned int i, entries;
1551 int64_t total_sample_count=0;
1553 if (c->fc->nb_streams < 1)
1555 st = c->fc->streams[c->fc->nb_streams-1];
1558 avio_r8(pb); /* version */
1559 avio_rb24(pb); /* flags */
1560 entries = avio_rb32(pb);
1562 av_dlog(c->fc, "track[%i].stts.entries = %i\n",
1563 c->fc->nb_streams-1, entries);
1565 if (entries >= UINT_MAX / sizeof(*sc->stts_data))
1568 sc->stts_data = av_malloc(entries * sizeof(*sc->stts_data));
1570 return AVERROR(ENOMEM);
1572 sc->stts_count = entries;
1574 for (i=0; i<entries; i++) {
1575 int sample_duration;
1578 sample_count=avio_rb32(pb);
1579 sample_duration = avio_rb32(pb);
1580 /* sample_duration < 0 is invalid based on the spec */
1581 if (sample_duration < 0) {
1582 av_log(c->fc, AV_LOG_ERROR, "Invalid SampleDelta in STTS %d", sample_duration);
1583 sample_duration = 1;
1585 sc->stts_data[i].count= sample_count;
1586 sc->stts_data[i].duration= sample_duration;
1588 av_dlog(c->fc, "sample_count=%d, sample_duration=%d\n",
1589 sample_count, sample_duration);
1591 duration+=(int64_t)sample_duration*sample_count;
1592 total_sample_count+=sample_count;
1595 st->nb_frames= total_sample_count;
1597 st->duration= duration;
1601 static int mov_read_ctts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1604 MOVStreamContext *sc;
1605 unsigned int i, entries;
1607 if (c->fc->nb_streams < 1)
1609 st = c->fc->streams[c->fc->nb_streams-1];
1612 avio_r8(pb); /* version */
1613 avio_rb24(pb); /* flags */
1614 entries = avio_rb32(pb);
1616 av_dlog(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
1618 if (entries >= UINT_MAX / sizeof(*sc->ctts_data))
1620 sc->ctts_data = av_malloc(entries * sizeof(*sc->ctts_data));
1622 return AVERROR(ENOMEM);
1623 sc->ctts_count = entries;
1625 for (i=0; i<entries; i++) {
1626 int count =avio_rb32(pb);
1627 int duration =avio_rb32(pb);
1629 sc->ctts_data[i].count = count;
1630 sc->ctts_data[i].duration= duration;
1631 if (duration < 0 && i+2<entries)
1632 sc->dts_shift = FFMAX(sc->dts_shift, -duration);
1635 av_dlog(c->fc, "dts shift %d\n", sc->dts_shift);
1640 static void mov_build_index(MOVContext *mov, AVStream *st)
1642 MOVStreamContext *sc = st->priv_data;
1643 int64_t current_offset;
1644 int64_t current_dts = 0;
1645 unsigned int stts_index = 0;
1646 unsigned int stsc_index = 0;
1647 unsigned int stss_index = 0;
1648 unsigned int stps_index = 0;
1650 uint64_t stream_size = 0;
1652 /* adjust first dts according to edit list */
1653 if ((sc->empty_duration || sc->start_time) && mov->time_scale > 0) {
1654 if (sc->empty_duration)
1655 sc->empty_duration = av_rescale(sc->empty_duration, sc->time_scale, mov->time_scale);
1656 sc->time_offset = sc->start_time - sc->empty_duration;
1657 current_dts = -sc->time_offset;
1658 if (sc->ctts_data && sc->stts_data &&
1659 sc->ctts_data[0].duration / FFMAX(sc->stts_data[0].duration, 1) > 16) {
1660 /* more than 16 frames delay, dts are likely wrong
1661 this happens with files created by iMovie */
1663 st->codec->has_b_frames = 1;
1667 /* only use old uncompressed audio chunk demuxing when stts specifies it */
1668 if (!(st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
1669 sc->stts_count == 1 && sc->stts_data[0].duration == 1)) {
1670 unsigned int current_sample = 0;
1671 unsigned int stts_sample = 0;
1672 unsigned int sample_size;
1673 unsigned int distance = 0;
1674 int key_off = sc->keyframes && sc->keyframes[0] == 1;
1676 current_dts -= sc->dts_shift;
1678 if (sc->sample_count >= UINT_MAX / sizeof(*st->index_entries))
1680 st->index_entries = av_malloc(sc->sample_count*sizeof(*st->index_entries));
1681 if (!st->index_entries)
1683 st->index_entries_allocated_size = sc->sample_count*sizeof(*st->index_entries);
1685 for (i = 0; i < sc->chunk_count; i++) {
1686 current_offset = sc->chunk_offsets[i];
1687 while (stsc_index + 1 < sc->stsc_count &&
1688 i + 1 == sc->stsc_data[stsc_index + 1].first)
1690 for (j = 0; j < sc->stsc_data[stsc_index].count; j++) {
1692 if (current_sample >= sc->sample_count) {
1693 av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
1697 if (!sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index]) {
1699 if (stss_index + 1 < sc->keyframe_count)
1701 } else if (sc->stps_count && current_sample+key_off == sc->stps_data[stps_index]) {
1703 if (stps_index + 1 < sc->stps_count)
1708 sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
1709 if (sc->pseudo_stream_id == -1 ||
1710 sc->stsc_data[stsc_index].id - 1 == sc->pseudo_stream_id) {
1711 AVIndexEntry *e = &st->index_entries[st->nb_index_entries++];
1712 e->pos = current_offset;
1713 e->timestamp = current_dts;
1714 e->size = sample_size;
1715 e->min_distance = distance;
1716 e->flags = keyframe ? AVINDEX_KEYFRAME : 0;
1717 av_dlog(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
1718 "size %d, distance %d, keyframe %d\n", st->index, current_sample,
1719 current_offset, current_dts, sample_size, distance, keyframe);
1722 current_offset += sample_size;
1723 stream_size += sample_size;
1724 current_dts += sc->stts_data[stts_index].duration;
1728 if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
1734 if (st->duration > 0)
1735 st->codec->bit_rate = stream_size*8*sc->time_scale/st->duration;
1737 unsigned chunk_samples, total = 0;
1739 // compute total chunk count
1740 for (i = 0; i < sc->stsc_count; i++) {
1741 unsigned count, chunk_count;
1743 chunk_samples = sc->stsc_data[i].count;
1744 if (i != sc->stsc_count - 1 &&
1745 sc->samples_per_frame && chunk_samples % sc->samples_per_frame) {
1746 av_log(mov->fc, AV_LOG_ERROR, "error unaligned chunk\n");
1750 if (sc->samples_per_frame >= 160) { // gsm
1751 count = chunk_samples / sc->samples_per_frame;
1752 } else if (sc->samples_per_frame > 1) {
1753 unsigned samples = (1024/sc->samples_per_frame)*sc->samples_per_frame;
1754 count = (chunk_samples+samples-1) / samples;
1756 count = (chunk_samples+1023) / 1024;
1759 if (i < sc->stsc_count - 1)
1760 chunk_count = sc->stsc_data[i+1].first - sc->stsc_data[i].first;
1762 chunk_count = sc->chunk_count - (sc->stsc_data[i].first - 1);
1763 total += chunk_count * count;
1766 av_dlog(mov->fc, "chunk count %d\n", total);
1767 if (total >= UINT_MAX / sizeof(*st->index_entries))
1769 st->index_entries = av_malloc(total*sizeof(*st->index_entries));
1770 if (!st->index_entries)
1772 st->index_entries_allocated_size = total*sizeof(*st->index_entries);
1775 for (i = 0; i < sc->chunk_count; i++) {
1776 current_offset = sc->chunk_offsets[i];
1777 if (stsc_index + 1 < sc->stsc_count &&
1778 i + 1 == sc->stsc_data[stsc_index + 1].first)
1780 chunk_samples = sc->stsc_data[stsc_index].count;
1782 while (chunk_samples > 0) {
1784 unsigned size, samples;
1786 if (sc->samples_per_frame >= 160) { // gsm
1787 samples = sc->samples_per_frame;
1788 size = sc->bytes_per_frame;
1790 if (sc->samples_per_frame > 1) {
1791 samples = FFMIN((1024 / sc->samples_per_frame)*
1792 sc->samples_per_frame, chunk_samples);
1793 size = (samples / sc->samples_per_frame) * sc->bytes_per_frame;
1795 samples = FFMIN(1024, chunk_samples);
1796 size = samples * sc->sample_size;
1800 if (st->nb_index_entries >= total) {
1801 av_log(mov->fc, AV_LOG_ERROR, "wrong chunk count %d\n", total);
1804 e = &st->index_entries[st->nb_index_entries++];
1805 e->pos = current_offset;
1806 e->timestamp = current_dts;
1808 e->min_distance = 0;
1809 e->flags = AVINDEX_KEYFRAME;
1810 av_dlog(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", "
1811 "size %d, duration %d\n", st->index, i, current_offset, current_dts,
1814 current_offset += size;
1815 current_dts += samples;
1816 chunk_samples -= samples;
1822 static int mov_open_dref(AVIOContext **pb, const char *src, MOVDref *ref,
1823 AVIOInterruptCB *int_cb)
1825 /* try relative path, we do not try the absolute because it can leak information about our
1826 system to an attacker */
1827 if (ref->nlvl_to > 0 && ref->nlvl_from > 0) {
1828 char filename[1024];
1829 const char *src_path;
1832 /* find a source dir */
1833 src_path = strrchr(src, '/');
1839 /* find a next level down to target */
1840 for (i = 0, l = strlen(ref->path) - 1; l >= 0; l--)
1841 if (ref->path[l] == '/') {
1842 if (i == ref->nlvl_to - 1)
1848 /* compose filename if next level down to target was found */
1849 if (i == ref->nlvl_to - 1 && src_path - src < sizeof(filename)) {
1850 memcpy(filename, src, src_path - src);
1851 filename[src_path - src] = 0;
1853 for (i = 1; i < ref->nlvl_from; i++)
1854 av_strlcat(filename, "../", 1024);
1856 av_strlcat(filename, ref->path + l + 1, 1024);
1858 if (!avio_open2(pb, filename, AVIO_FLAG_READ, int_cb, NULL))
1863 return AVERROR(ENOENT);
1866 static int mov_read_trak(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1869 MOVStreamContext *sc;
1872 st = avformat_new_stream(c->fc, NULL);
1873 if (!st) return AVERROR(ENOMEM);
1874 st->id = c->fc->nb_streams;
1875 sc = av_mallocz(sizeof(MOVStreamContext));
1876 if (!sc) return AVERROR(ENOMEM);
1879 st->codec->codec_type = AVMEDIA_TYPE_DATA;
1880 sc->ffindex = st->index;
1882 if ((ret = mov_read_default(c, pb, atom)) < 0)
1886 if (sc->chunk_count && (!sc->stts_count || !sc->stsc_count ||
1887 (!sc->sample_size && !sc->sample_count))) {
1888 av_log(c->fc, AV_LOG_ERROR, "stream %d, missing mandatory atoms, broken header\n",
1893 if (sc->time_scale <= 0) {
1894 av_log(c->fc, AV_LOG_WARNING, "stream %d, timescale not set\n", st->index);
1895 sc->time_scale = c->time_scale;
1896 if (sc->time_scale <= 0)
1900 avpriv_set_pts_info(st, 64, 1, sc->time_scale);
1902 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
1903 !st->codec->frame_size && sc->stts_count == 1) {
1904 st->codec->frame_size = av_rescale(sc->stts_data[0].duration,
1905 st->codec->sample_rate, sc->time_scale);
1906 av_dlog(c->fc, "frame size %d\n", st->codec->frame_size);
1909 mov_build_index(c, st);
1911 if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) {
1912 MOVDref *dref = &sc->drefs[sc->dref_id - 1];
1913 if (mov_open_dref(&sc->pb, c->fc->filename, dref, &c->fc->interrupt_callback) < 0)
1914 av_log(c->fc, AV_LOG_ERROR,
1915 "stream %d, error opening alias: path='%s', dir='%s', "
1916 "filename='%s', volume='%s', nlvl_from=%d, nlvl_to=%d\n",
1917 st->index, dref->path, dref->dir, dref->filename,
1918 dref->volume, dref->nlvl_from, dref->nlvl_to);
1922 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1923 if (!st->sample_aspect_ratio.num &&
1924 (st->codec->width != sc->width || st->codec->height != sc->height)) {
1925 st->sample_aspect_ratio = av_d2q(((double)st->codec->height * sc->width) /
1926 ((double)st->codec->width * sc->height), INT_MAX);
1929 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
1930 sc->time_scale*st->nb_frames, st->duration, INT_MAX);
1932 if (sc->stts_count == 1 || (sc->stts_count == 2 && sc->stts_data[1].count == 1))
1933 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den,
1934 sc->time_scale, sc->stts_data[0].duration, INT_MAX);
1937 switch (st->codec->codec_id) {
1938 #if CONFIG_H261_DECODER
1941 #if CONFIG_H263_DECODER
1944 #if CONFIG_H264_DECODER
1947 #if CONFIG_MPEG4_DECODER
1948 case CODEC_ID_MPEG4:
1950 st->codec->width = 0; /* let decoder init width/height */
1951 st->codec->height= 0;
1955 /* Do not need those anymore. */
1956 av_freep(&sc->chunk_offsets);
1957 av_freep(&sc->stsc_data);
1958 av_freep(&sc->sample_sizes);
1959 av_freep(&sc->keyframes);
1960 av_freep(&sc->stts_data);
1961 av_freep(&sc->stps_data);
1966 static int mov_read_ilst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1969 c->itunes_metadata = 1;
1970 ret = mov_read_default(c, pb, atom);
1971 c->itunes_metadata = 0;
1975 static int mov_read_meta(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1977 while (atom.size > 8) {
1978 uint32_t tag = avio_rl32(pb);
1980 if (tag == MKTAG('h','d','l','r')) {
1981 avio_seek(pb, -8, SEEK_CUR);
1983 return mov_read_default(c, pb, atom);
1989 static int mov_read_tkhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1994 int64_t disp_transform[2];
1995 int display_matrix[3][2];
1997 MOVStreamContext *sc;
2000 if (c->fc->nb_streams < 1)
2002 st = c->fc->streams[c->fc->nb_streams-1];
2005 version = avio_r8(pb);
2006 avio_rb24(pb); /* flags */
2008 MOV_TRACK_ENABLED 0x0001
2009 MOV_TRACK_IN_MOVIE 0x0002
2010 MOV_TRACK_IN_PREVIEW 0x0004
2011 MOV_TRACK_IN_POSTER 0x0008
2018 avio_rb32(pb); /* creation time */
2019 avio_rb32(pb); /* modification time */
2021 st->id = (int)avio_rb32(pb); /* track id (NOT 0 !)*/
2022 avio_rb32(pb); /* reserved */
2024 /* highlevel (considering edits) duration in movie timebase */
2025 (version == 1) ? avio_rb64(pb) : avio_rb32(pb);
2026 avio_rb32(pb); /* reserved */
2027 avio_rb32(pb); /* reserved */
2029 avio_rb16(pb); /* layer */
2030 avio_rb16(pb); /* alternate group */
2031 avio_rb16(pb); /* volume */
2032 avio_rb16(pb); /* reserved */
2034 //read in the display matrix (outlined in ISO 14496-12, Section 6.2.2)
2035 // they're kept in fixed point format through all calculations
2036 // ignore u,v,z b/c we don't need the scale factor to calc aspect ratio
2037 for (i = 0; i < 3; i++) {
2038 display_matrix[i][0] = avio_rb32(pb); // 16.16 fixed point
2039 display_matrix[i][1] = avio_rb32(pb); // 16.16 fixed point
2040 avio_rb32(pb); // 2.30 fixed point (not used)
2043 width = avio_rb32(pb); // 16.16 fixed point track width
2044 height = avio_rb32(pb); // 16.16 fixed point track height
2045 sc->width = width >> 16;
2046 sc->height = height >> 16;
2048 if (display_matrix[0][0] == -65536 && display_matrix[1][1] == -65536) {
2049 av_dict_set(&st->metadata, "rotate", "180", 0);
2052 // transform the display width/height according to the matrix
2053 // skip this if the display matrix is the default identity matrix
2054 // or if it is rotating the picture, ex iPhone 3GS
2055 // to keep the same scale, use [width height 1<<16]
2056 if (width && height &&
2057 ((display_matrix[0][0] != 65536 ||
2058 display_matrix[1][1] != 65536) &&
2059 !display_matrix[0][1] &&
2060 !display_matrix[1][0] &&
2061 !display_matrix[2][0] && !display_matrix[2][1])) {
2062 for (i = 0; i < 2; i++)
2064 (int64_t) width * display_matrix[0][i] +
2065 (int64_t) height * display_matrix[1][i] +
2066 ((int64_t) display_matrix[2][i] << 16);
2068 //sample aspect ratio is new width/height divided by old width/height
2069 st->sample_aspect_ratio = av_d2q(
2070 ((double) disp_transform[0] * height) /
2071 ((double) disp_transform[1] * width), INT_MAX);
2076 static int mov_read_tfhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2078 MOVFragment *frag = &c->fragment;
2079 MOVTrackExt *trex = NULL;
2080 int flags, track_id, i;
2082 avio_r8(pb); /* version */
2083 flags = avio_rb24(pb);
2085 track_id = avio_rb32(pb);
2088 frag->track_id = track_id;
2089 for (i = 0; i < c->trex_count; i++)
2090 if (c->trex_data[i].track_id == frag->track_id) {
2091 trex = &c->trex_data[i];
2095 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding trex\n");
2099 if (flags & 0x01) frag->base_data_offset = avio_rb64(pb);
2100 else frag->base_data_offset = frag->moof_offset;
2101 if (flags & 0x02) frag->stsd_id = avio_rb32(pb);
2102 else frag->stsd_id = trex->stsd_id;
2104 frag->duration = flags & 0x08 ? avio_rb32(pb) : trex->duration;
2105 frag->size = flags & 0x10 ? avio_rb32(pb) : trex->size;
2106 frag->flags = flags & 0x20 ? avio_rb32(pb) : trex->flags;
2107 av_dlog(c->fc, "frag flags 0x%x\n", frag->flags);
2111 static int mov_read_chap(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2113 c->chapter_track = avio_rb32(pb);
2117 static int mov_read_trex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2121 if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data))
2123 trex = av_realloc(c->trex_data, (c->trex_count+1)*sizeof(*c->trex_data));
2125 return AVERROR(ENOMEM);
2126 c->trex_data = trex;
2127 trex = &c->trex_data[c->trex_count++];
2128 avio_r8(pb); /* version */
2129 avio_rb24(pb); /* flags */
2130 trex->track_id = avio_rb32(pb);
2131 trex->stsd_id = avio_rb32(pb);
2132 trex->duration = avio_rb32(pb);
2133 trex->size = avio_rb32(pb);
2134 trex->flags = avio_rb32(pb);
2138 static int mov_read_trun(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2140 MOVFragment *frag = &c->fragment;
2141 AVStream *st = NULL;
2142 MOVStreamContext *sc;
2146 int data_offset = 0;
2147 unsigned entries, first_sample_flags = frag->flags;
2148 int flags, distance, i;
2150 for (i = 0; i < c->fc->nb_streams; i++) {
2151 if (c->fc->streams[i]->id == frag->track_id) {
2152 st = c->fc->streams[i];
2157 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id);
2161 if (sc->pseudo_stream_id+1 != frag->stsd_id)
2163 avio_r8(pb); /* version */
2164 flags = avio_rb24(pb);
2165 entries = avio_rb32(pb);
2166 av_dlog(c->fc, "flags 0x%x entries %d\n", flags, entries);
2168 /* Always assume the presence of composition time offsets.
2169 * Without this assumption, for instance, we cannot deal with a track in fragmented movies that meet the following.
2170 * 1) in the initial movie, there are no samples.
2171 * 2) in the first movie fragment, there is only one sample without composition time offset.
2172 * 3) in the subsequent movie fragments, there are samples with composition time offset. */
2173 if (!sc->ctts_count && sc->sample_count)
2175 /* Complement ctts table if moov atom doesn't have ctts atom. */
2176 ctts_data = av_malloc(sizeof(*sc->ctts_data));
2178 return AVERROR(ENOMEM);
2179 sc->ctts_data = ctts_data;
2180 sc->ctts_data[sc->ctts_count].count = sc->sample_count;
2181 sc->ctts_data[sc->ctts_count].duration = 0;
2184 if ((uint64_t)entries+sc->ctts_count >= UINT_MAX/sizeof(*sc->ctts_data))
2186 ctts_data = av_realloc(sc->ctts_data,
2187 (entries+sc->ctts_count)*sizeof(*sc->ctts_data));
2189 return AVERROR(ENOMEM);
2190 sc->ctts_data = ctts_data;
2192 if (flags & 0x001) data_offset = avio_rb32(pb);
2193 if (flags & 0x004) first_sample_flags = avio_rb32(pb);
2194 dts = st->duration - sc->time_offset;
2195 offset = frag->base_data_offset + data_offset;
2197 av_dlog(c->fc, "first sample flags 0x%x\n", first_sample_flags);
2198 for (i = 0; i < entries; i++) {
2199 unsigned sample_size = frag->size;
2200 int sample_flags = i ? frag->flags : first_sample_flags;
2201 unsigned sample_duration = frag->duration;
2204 if (flags & 0x100) sample_duration = avio_rb32(pb);
2205 if (flags & 0x200) sample_size = avio_rb32(pb);
2206 if (flags & 0x400) sample_flags = avio_rb32(pb);
2207 sc->ctts_data[sc->ctts_count].count = 1;
2208 sc->ctts_data[sc->ctts_count].duration = (flags & 0x800) ? avio_rb32(pb) : 0;
2210 if ((keyframe = st->codec->codec_type == AVMEDIA_TYPE_AUDIO ||
2211 (flags & 0x004 && !i && !sample_flags) || sample_flags & 0x2000000))
2213 av_add_index_entry(st, offset, dts, sample_size, distance,
2214 keyframe ? AVINDEX_KEYFRAME : 0);
2215 av_dlog(c->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
2216 "size %d, distance %d, keyframe %d\n", st->index, sc->sample_count+i,
2217 offset, dts, sample_size, distance, keyframe);
2219 dts += sample_duration;
2220 offset += sample_size;
2222 frag->moof_offset = offset;
2223 st->duration = dts + sc->time_offset;
2227 /* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
2228 /* like the files created with Adobe Premiere 5.0, for samples see */
2229 /* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
2230 static int mov_read_wide(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2235 return 0; /* continue */
2236 if (avio_rb32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
2237 avio_skip(pb, atom.size - 4);
2240 atom.type = avio_rl32(pb);
2242 if (atom.type != MKTAG('m','d','a','t')) {
2243 avio_skip(pb, atom.size);
2246 err = mov_read_mdat(c, pb, atom);
2250 static int mov_read_cmov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2255 uint8_t *moov_data; /* uncompressed data */
2256 long cmov_len, moov_len;
2259 avio_rb32(pb); /* dcom atom */
2260 if (avio_rl32(pb) != MKTAG('d','c','o','m'))
2262 if (avio_rl32(pb) != MKTAG('z','l','i','b')) {
2263 av_log(c->fc, AV_LOG_ERROR, "unknown compression for cmov atom !");
2266 avio_rb32(pb); /* cmvd atom */
2267 if (avio_rl32(pb) != MKTAG('c','m','v','d'))
2269 moov_len = avio_rb32(pb); /* uncompressed size */
2270 cmov_len = atom.size - 6 * 4;
2272 cmov_data = av_malloc(cmov_len);
2274 return AVERROR(ENOMEM);
2275 moov_data = av_malloc(moov_len);
2278 return AVERROR(ENOMEM);
2280 avio_read(pb, cmov_data, cmov_len);
2281 if (uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
2282 goto free_and_return;
2283 if (ffio_init_context(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
2284 goto free_and_return;
2285 atom.type = MKTAG('m','o','o','v');
2286 atom.size = moov_len;
2287 ret = mov_read_default(c, &ctx, atom);
2293 av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
2298 /* edit list atom */
2299 static int mov_read_elst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2301 MOVStreamContext *sc;
2302 int i, edit_count, version, edit_start_index = 0;
2304 if (c->fc->nb_streams < 1)
2306 sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
2308 version = avio_r8(pb); /* version */
2309 avio_rb24(pb); /* flags */
2310 edit_count = avio_rb32(pb); /* entries */
2312 if ((uint64_t)edit_count*12+8 > atom.size)
2315 for (i=0; i<edit_count; i++){
2319 duration = avio_rb64(pb);
2320 time = avio_rb64(pb);
2322 duration = avio_rb32(pb); /* segment duration */
2323 time = (int32_t)avio_rb32(pb); /* media time */
2325 avio_rb32(pb); /* Media rate */
2326 if (i == 0 && time == -1) {
2327 sc->empty_duration = duration;
2328 edit_start_index = 1;
2329 } else if (i == edit_start_index && time >= 0)
2330 sc->start_time = time;
2334 av_log(c->fc, AV_LOG_WARNING, "multiple edit list entries, "
2335 "a/v desync might occur, patch welcome\n");
2337 av_dlog(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, edit_count);
2341 static int mov_read_chan(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2346 ff_mov_read_chan(c->fc, atom.size - 4, c->fc->streams[0]->codec);
2350 static const MOVParseTableEntry mov_default_parse_table[] = {
2351 { MKTAG('a','v','s','s'), mov_read_avss },
2352 { MKTAG('c','h','p','l'), mov_read_chpl },
2353 { MKTAG('c','o','6','4'), mov_read_stco },
2354 { MKTAG('c','t','t','s'), mov_read_ctts }, /* composition time to sample */
2355 { MKTAG('d','i','n','f'), mov_read_default },
2356 { MKTAG('d','r','e','f'), mov_read_dref },
2357 { MKTAG('e','d','t','s'), mov_read_default },
2358 { MKTAG('e','l','s','t'), mov_read_elst },
2359 { MKTAG('e','n','d','a'), mov_read_enda },
2360 { MKTAG('f','i','e','l'), mov_read_fiel },
2361 { MKTAG('f','t','y','p'), mov_read_ftyp },
2362 { MKTAG('g','l','b','l'), mov_read_glbl },
2363 { MKTAG('h','d','l','r'), mov_read_hdlr },
2364 { MKTAG('i','l','s','t'), mov_read_ilst },
2365 { MKTAG('j','p','2','h'), mov_read_jp2h },
2366 { MKTAG('m','d','a','t'), mov_read_mdat },
2367 { MKTAG('m','d','h','d'), mov_read_mdhd },
2368 { MKTAG('m','d','i','a'), mov_read_default },
2369 { MKTAG('m','e','t','a'), mov_read_meta },
2370 { MKTAG('m','i','n','f'), mov_read_default },
2371 { MKTAG('m','o','o','f'), mov_read_moof },
2372 { MKTAG('m','o','o','v'), mov_read_moov },
2373 { MKTAG('m','v','e','x'), mov_read_default },
2374 { MKTAG('m','v','h','d'), mov_read_mvhd },
2375 { MKTAG('S','M','I',' '), mov_read_smi }, /* Sorenson extension ??? */
2376 { MKTAG('a','l','a','c'), mov_read_alac }, /* alac specific atom */
2377 { MKTAG('a','v','c','C'), mov_read_glbl },
2378 { MKTAG('p','a','s','p'), mov_read_pasp },
2379 { MKTAG('s','t','b','l'), mov_read_default },
2380 { MKTAG('s','t','c','o'), mov_read_stco },
2381 { MKTAG('s','t','p','s'), mov_read_stps },
2382 { MKTAG('s','t','r','f'), mov_read_strf },
2383 { MKTAG('s','t','s','c'), mov_read_stsc },
2384 { MKTAG('s','t','s','d'), mov_read_stsd }, /* sample description */
2385 { MKTAG('s','t','s','s'), mov_read_stss }, /* sync sample */
2386 { MKTAG('s','t','s','z'), mov_read_stsz }, /* sample size */
2387 { MKTAG('s','t','t','s'), mov_read_stts },
2388 { MKTAG('s','t','z','2'), mov_read_stsz }, /* compact sample size */
2389 { MKTAG('t','k','h','d'), mov_read_tkhd }, /* track header */
2390 { MKTAG('t','f','h','d'), mov_read_tfhd }, /* track fragment header */
2391 { MKTAG('t','r','a','k'), mov_read_trak },
2392 { MKTAG('t','r','a','f'), mov_read_default },
2393 { MKTAG('t','r','e','f'), mov_read_default },
2394 { MKTAG('c','h','a','p'), mov_read_chap },
2395 { MKTAG('t','r','e','x'), mov_read_trex },
2396 { MKTAG('t','r','u','n'), mov_read_trun },
2397 { MKTAG('u','d','t','a'), mov_read_default },
2398 { MKTAG('w','a','v','e'), mov_read_wave },
2399 { MKTAG('e','s','d','s'), mov_read_esds },
2400 { MKTAG('d','a','c','3'), mov_read_dac3 }, /* AC-3 info */
2401 { MKTAG('w','i','d','e'), mov_read_wide }, /* place holder */
2402 { MKTAG('w','f','e','x'), mov_read_wfex },
2403 { MKTAG('c','m','o','v'), mov_read_cmov },
2404 { MKTAG('c','h','a','n'), mov_read_chan },
2408 static int mov_probe(AVProbeData *p)
2410 unsigned int offset;
2414 /* check file header */
2417 /* ignore invalid offset */
2418 if ((offset + 8) > (unsigned int)p->buf_size)
2420 tag = AV_RL32(p->buf + offset + 4);
2422 /* check for obvious tags */
2423 case MKTAG('j','P',' ',' '): /* jpeg 2000 signature */
2424 case MKTAG('m','o','o','v'):
2425 case MKTAG('m','d','a','t'):
2426 case MKTAG('p','n','o','t'): /* detect movs with preview pics like ew.mov and april.mov */
2427 case MKTAG('u','d','t','a'): /* Packet Video PVAuthor adds this and a lot of more junk */
2428 case MKTAG('f','t','y','p'):
2429 return AVPROBE_SCORE_MAX;
2430 /* those are more common words, so rate then a bit less */
2431 case MKTAG('e','d','i','w'): /* xdcam files have reverted first tags */
2432 case MKTAG('w','i','d','e'):
2433 case MKTAG('f','r','e','e'):
2434 case MKTAG('j','u','n','k'):
2435 case MKTAG('p','i','c','t'):
2436 return AVPROBE_SCORE_MAX - 5;
2437 case MKTAG(0x82,0x82,0x7f,0x7d):
2438 case MKTAG('s','k','i','p'):
2439 case MKTAG('u','u','i','d'):
2440 case MKTAG('p','r','f','l'):
2441 offset = AV_RB32(p->buf+offset) + offset;
2442 /* if we only find those cause probedata is too small at least rate them */
2443 score = AVPROBE_SCORE_MAX - 50;
2446 /* unrecognized tag */
2452 // must be done after parsing all trak because there's no order requirement
2453 static void mov_read_chapters(AVFormatContext *s)
2455 MOVContext *mov = s->priv_data;
2456 AVStream *st = NULL;
2457 MOVStreamContext *sc;
2461 for (i = 0; i < s->nb_streams; i++)
2462 if (s->streams[i]->id == mov->chapter_track) {
2467 av_log(s, AV_LOG_ERROR, "Referenced QT chapter track not found\n");
2471 st->discard = AVDISCARD_ALL;
2473 cur_pos = avio_tell(sc->pb);
2475 for (i = 0; i < st->nb_index_entries; i++) {
2476 AVIndexEntry *sample = &st->index_entries[i];
2477 int64_t end = i+1 < st->nb_index_entries ? st->index_entries[i+1].timestamp : st->duration;
2482 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
2483 av_log(s, AV_LOG_ERROR, "Chapter %d not found in file\n", i);
2487 // the first two bytes are the length of the title
2488 len = avio_rb16(sc->pb);
2489 if (len > sample->size-2)
2491 title_len = 2*len + 1;
2492 if (!(title = av_mallocz(title_len)))
2495 // The samples could theoretically be in any encoding if there's an encd
2496 // atom following, but in practice are only utf-8 or utf-16, distinguished
2497 // instead by the presence of a BOM
2501 ch = avio_rb16(sc->pb);
2503 avio_get_str16be(sc->pb, len, title, title_len);
2504 else if (ch == 0xfffe)
2505 avio_get_str16le(sc->pb, len, title, title_len);
2508 if (len == 1 || len == 2)
2511 get_strz(sc->pb, title + 2, len - 1);
2515 avpriv_new_chapter(s, i, st->time_base, sample->timestamp, end, title);
2519 avio_seek(sc->pb, cur_pos, SEEK_SET);
2522 static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
2524 MOVContext *mov = s->priv_data;
2525 AVIOContext *pb = s->pb;
2527 MOVAtom atom = { AV_RL32("root") };
2530 /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
2532 atom.size = avio_size(pb);
2534 atom.size = INT64_MAX;
2536 /* check MOV header */
2537 if ((err = mov_read_default(mov, pb, atom)) < 0) {
2538 av_log(s, AV_LOG_ERROR, "error reading header: %d\n", err);
2541 if (!mov->found_moov) {
2542 av_log(s, AV_LOG_ERROR, "moov atom not found\n");
2545 av_dlog(mov->fc, "on_parse_exit_offset=%"PRId64"\n", avio_tell(pb));
2547 if (pb->seekable && mov->chapter_track > 0)
2548 mov_read_chapters(s);
2553 static AVIndexEntry *mov_find_next_sample(AVFormatContext *s, AVStream **st)
2555 AVIndexEntry *sample = NULL;
2556 int64_t best_dts = INT64_MAX;
2558 for (i = 0; i < s->nb_streams; i++) {
2559 AVStream *avst = s->streams[i];
2560 MOVStreamContext *msc = avst->priv_data;
2561 if (msc->pb && msc->current_sample < avst->nb_index_entries) {
2562 AVIndexEntry *current_sample = &avst->index_entries[msc->current_sample];
2563 int64_t dts = av_rescale(current_sample->timestamp, AV_TIME_BASE, msc->time_scale);
2564 av_dlog(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
2565 if (!sample || (!s->pb->seekable && current_sample->pos < sample->pos) ||
2567 ((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb &&
2568 ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
2569 (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) {
2570 sample = current_sample;
2579 static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
2581 MOVContext *mov = s->priv_data;
2582 MOVStreamContext *sc;
2583 AVIndexEntry *sample;
2584 AVStream *st = NULL;
2587 sample = mov_find_next_sample(s, &st);
2589 mov->found_mdat = 0;
2590 if (s->pb->seekable||
2591 mov_read_default(mov, s->pb, (MOVAtom){ AV_RL32("root"), INT64_MAX }) < 0 ||
2594 av_dlog(s, "read fragments, offset 0x%"PRIx64"\n", avio_tell(s->pb));
2598 /* must be done just before reading, to avoid infinite loop on sample */
2599 sc->current_sample++;
2601 if (st->discard != AVDISCARD_ALL) {
2602 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
2603 av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
2604 sc->ffindex, sample->pos);
2607 ret = av_get_packet(sc->pb, pkt, sample->size);
2610 if (sc->has_palette) {
2613 pal = av_packet_new_side_data(pkt, AV_PKT_DATA_PALETTE, AVPALETTE_SIZE);
2615 av_log(mov->fc, AV_LOG_ERROR, "Cannot append palette to packet\n");
2617 memcpy(pal, sc->palette, AVPALETTE_SIZE);
2618 sc->has_palette = 0;
2621 #if CONFIG_DV_DEMUXER
2622 if (mov->dv_demux && sc->dv_audio_container) {
2623 avpriv_dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size, pkt->pos);
2626 ret = avpriv_dv_get_packet(mov->dv_demux, pkt);
2633 pkt->stream_index = sc->ffindex;
2634 pkt->dts = sample->timestamp;
2635 if (sc->ctts_data) {
2636 pkt->pts = pkt->dts + sc->dts_shift + sc->ctts_data[sc->ctts_index].duration;
2637 /* update ctts context */
2639 if (sc->ctts_index < sc->ctts_count &&
2640 sc->ctts_data[sc->ctts_index].count == sc->ctts_sample) {
2642 sc->ctts_sample = 0;
2645 pkt->dts = AV_NOPTS_VALUE;
2647 int64_t next_dts = (sc->current_sample < st->nb_index_entries) ?
2648 st->index_entries[sc->current_sample].timestamp : st->duration;
2649 pkt->duration = next_dts - pkt->dts;
2650 pkt->pts = pkt->dts;
2652 if (st->discard == AVDISCARD_ALL)
2654 pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? AV_PKT_FLAG_KEY : 0;
2655 pkt->pos = sample->pos;
2656 av_dlog(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n",
2657 pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
2661 static int mov_seek_stream(AVFormatContext *s, AVStream *st, int64_t timestamp, int flags)
2663 MOVStreamContext *sc = st->priv_data;
2664 int sample, time_sample;
2667 sample = av_index_search_timestamp(st, timestamp, flags);
2668 av_dlog(s, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
2669 if (sample < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
2671 if (sample < 0) /* not sure what to do */
2673 sc->current_sample = sample;
2674 av_dlog(s, "stream %d, found sample %d\n", st->index, sc->current_sample);
2675 /* adjust ctts index */
2676 if (sc->ctts_data) {
2678 for (i = 0; i < sc->ctts_count; i++) {
2679 int next = time_sample + sc->ctts_data[i].count;
2680 if (next > sc->current_sample) {
2682 sc->ctts_sample = sc->current_sample - time_sample;
2691 static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
2694 int64_t seek_timestamp, timestamp;
2698 if (stream_index >= s->nb_streams)
2700 if (sample_time < 0)
2703 st = s->streams[stream_index];
2704 sample = mov_seek_stream(s, st, sample_time, flags);
2708 /* adjust seek timestamp to found sample timestamp */
2709 seek_timestamp = st->index_entries[sample].timestamp;
2711 for (i = 0; i < s->nb_streams; i++) {
2713 if (stream_index == i)
2716 timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
2717 mov_seek_stream(s, st, timestamp, flags);
2722 static int mov_read_close(AVFormatContext *s)
2724 MOVContext *mov = s->priv_data;
2727 for (i = 0; i < s->nb_streams; i++) {
2728 AVStream *st = s->streams[i];
2729 MOVStreamContext *sc = st->priv_data;
2731 av_freep(&sc->ctts_data);
2732 for (j = 0; j < sc->drefs_count; j++) {
2733 av_freep(&sc->drefs[j].path);
2734 av_freep(&sc->drefs[j].dir);
2736 av_freep(&sc->drefs);
2737 if (sc->pb && sc->pb != s->pb)
2741 if (mov->dv_demux) {
2742 for (i = 0; i < mov->dv_fctx->nb_streams; i++) {
2743 av_freep(&mov->dv_fctx->streams[i]->codec);
2744 av_freep(&mov->dv_fctx->streams[i]);
2746 av_freep(&mov->dv_fctx);
2747 av_freep(&mov->dv_demux);
2750 av_freep(&mov->trex_data);
2755 AVInputFormat ff_mov_demuxer = {
2756 .name = "mov,mp4,m4a,3gp,3g2,mj2",
2757 .long_name = NULL_IF_CONFIG_SMALL("QuickTime/MPEG-4/Motion JPEG 2000 format"),
2758 .priv_data_size = sizeof(MOVContext),
2759 .read_probe = mov_probe,
2760 .read_header = mov_read_header,
2761 .read_packet = mov_read_packet,
2762 .read_close = mov_read_close,
2763 .read_seek = mov_read_seek,