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 Libav.
8 * Libav 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 * Libav 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 Libav; 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/attributes.h"
29 #include "libavutil/audioconvert.h"
30 #include "libavutil/intreadwrite.h"
31 #include "libavutil/intfloat.h"
32 #include "libavutil/mathematics.h"
33 #include "libavutil/avstring.h"
34 #include "libavutil/dict.h"
35 #include "libavcodec/ac3tab.h"
38 #include "avio_internal.h"
41 #include "libavcodec/get_bits.h"
50 * First version by Francois Revol revol@free.fr
51 * Seek function by Gael Chardon gael.dev@4now.net
54 #include "qtpalette.h"
60 /* those functions parse an atom */
61 /* links atom IDs to parse functions */
62 typedef struct MOVParseTableEntry {
64 int (*parse)(MOVContext *ctx, AVIOContext *pb, MOVAtom atom);
67 static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom);
69 static int mov_metadata_track_or_disc_number(MOVContext *c, AVIOContext *pb,
70 unsigned len, const char *key)
74 short current, total = 0;
75 avio_rb16(pb); // unknown
76 current = avio_rb16(pb);
78 total = avio_rb16(pb);
80 snprintf(buf, sizeof(buf), "%d", current);
82 snprintf(buf, sizeof(buf), "%d/%d", current, total);
83 av_dict_set(&c->fc->metadata, key, buf, 0);
88 static int mov_metadata_int8_bypass_padding(MOVContext *c, AVIOContext *pb,
89 unsigned len, const char *key)
93 /* bypass padding bytes */
98 snprintf(buf, sizeof(buf), "%d", avio_r8(pb));
99 av_dict_set(&c->fc->metadata, key, buf, 0);
104 static int mov_metadata_int8_no_padding(MOVContext *c, AVIOContext *pb,
105 unsigned len, const char *key)
109 snprintf(buf, sizeof(buf), "%d", avio_r8(pb));
110 av_dict_set(&c->fc->metadata, key, buf, 0);
115 static int mov_metadata_gnre(MOVContext *c, AVIOContext *pb,
116 unsigned len, const char *key)
121 avio_r8(pb); // unknown
124 if (genre < 1 || genre > ID3v1_GENRE_MAX)
126 snprintf(buf, sizeof(buf), "%s", ff_id3v1_genre_str[genre-1]);
127 av_dict_set(&c->fc->metadata, key, buf, 0);
132 static const uint32_t mac_to_unicode[128] = {
133 0x00C4,0x00C5,0x00C7,0x00C9,0x00D1,0x00D6,0x00DC,0x00E1,
134 0x00E0,0x00E2,0x00E4,0x00E3,0x00E5,0x00E7,0x00E9,0x00E8,
135 0x00EA,0x00EB,0x00ED,0x00EC,0x00EE,0x00EF,0x00F1,0x00F3,
136 0x00F2,0x00F4,0x00F6,0x00F5,0x00FA,0x00F9,0x00FB,0x00FC,
137 0x2020,0x00B0,0x00A2,0x00A3,0x00A7,0x2022,0x00B6,0x00DF,
138 0x00AE,0x00A9,0x2122,0x00B4,0x00A8,0x2260,0x00C6,0x00D8,
139 0x221E,0x00B1,0x2264,0x2265,0x00A5,0x00B5,0x2202,0x2211,
140 0x220F,0x03C0,0x222B,0x00AA,0x00BA,0x03A9,0x00E6,0x00F8,
141 0x00BF,0x00A1,0x00AC,0x221A,0x0192,0x2248,0x2206,0x00AB,
142 0x00BB,0x2026,0x00A0,0x00C0,0x00C3,0x00D5,0x0152,0x0153,
143 0x2013,0x2014,0x201C,0x201D,0x2018,0x2019,0x00F7,0x25CA,
144 0x00FF,0x0178,0x2044,0x20AC,0x2039,0x203A,0xFB01,0xFB02,
145 0x2021,0x00B7,0x201A,0x201E,0x2030,0x00C2,0x00CA,0x00C1,
146 0x00CB,0x00C8,0x00CD,0x00CE,0x00CF,0x00CC,0x00D3,0x00D4,
147 0xF8FF,0x00D2,0x00DA,0x00DB,0x00D9,0x0131,0x02C6,0x02DC,
148 0x00AF,0x02D8,0x02D9,0x02DA,0x00B8,0x02DD,0x02DB,0x02C7,
151 static int mov_read_mac_string(MOVContext *c, AVIOContext *pb, int len,
152 char *dst, int dstlen)
155 char *end = dst+dstlen-1;
158 for (i = 0; i < len; i++) {
159 uint8_t t, c = avio_r8(pb);
160 if (c < 0x80 && p < end)
163 PUT_UTF8(mac_to_unicode[c-0x80], t, if (p < end) *p++ = t;);
169 static int mov_read_covr(MOVContext *c, AVIOContext *pb, int type, int len)
173 MOVStreamContext *sc;
178 case 0xd: id = AV_CODEC_ID_MJPEG; break;
179 case 0xe: id = AV_CODEC_ID_PNG; break;
180 case 0x1b: id = AV_CODEC_ID_BMP; break;
182 av_log(c->fc, AV_LOG_WARNING, "Unknown cover type: 0x%x.\n", type);
187 st = avformat_new_stream(c->fc, NULL);
189 return AVERROR(ENOMEM);
190 sc = av_mallocz(sizeof(*sc));
192 return AVERROR(ENOMEM);
195 ret = av_get_packet(pb, &pkt, len);
199 st->disposition |= AV_DISPOSITION_ATTACHED_PIC;
201 st->attached_pic = pkt;
202 st->attached_pic.stream_index = st->index;
203 st->attached_pic.flags |= AV_PKT_FLAG_KEY;
205 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
206 st->codec->codec_id = id;
211 static int mov_read_udta_string(MOVContext *c, AVIOContext *pb, MOVAtom atom)
213 #ifdef MOV_EXPORT_ALL_METADATA
216 char str[1024], key2[16], language[4] = {0};
217 const char *key = NULL;
218 uint16_t langcode = 0;
219 uint32_t data_type = 0, str_size;
220 int (*parse)(MOVContext*, AVIOContext*, unsigned, const char*) = NULL;
223 case MKTAG(0xa9,'n','a','m'): key = "title"; break;
224 case MKTAG(0xa9,'a','u','t'):
225 case MKTAG(0xa9,'A','R','T'): key = "artist"; break;
226 case MKTAG( 'a','A','R','T'): key = "album_artist"; break;
227 case MKTAG(0xa9,'w','r','t'): key = "composer"; break;
228 case MKTAG( 'c','p','r','t'):
229 case MKTAG(0xa9,'c','p','y'): key = "copyright"; break;
230 case MKTAG(0xa9,'c','m','t'):
231 case MKTAG(0xa9,'i','n','f'): key = "comment"; break;
232 case MKTAG(0xa9,'a','l','b'): key = "album"; break;
233 case MKTAG(0xa9,'d','a','y'): key = "date"; break;
234 case MKTAG(0xa9,'g','e','n'): key = "genre"; break;
235 case MKTAG( 'g','n','r','e'): key = "genre";
236 parse = mov_metadata_gnre; break;
237 case MKTAG(0xa9,'t','o','o'):
238 case MKTAG(0xa9,'s','w','r'): key = "encoder"; break;
239 case MKTAG(0xa9,'e','n','c'): key = "encoder"; break;
240 case MKTAG( 'd','e','s','c'): key = "description";break;
241 case MKTAG( 'l','d','e','s'): key = "synopsis"; break;
242 case MKTAG( 't','v','s','h'): key = "show"; break;
243 case MKTAG( 't','v','e','n'): key = "episode_id";break;
244 case MKTAG( 't','v','n','n'): key = "network"; break;
245 case MKTAG( 't','r','k','n'): key = "track";
246 parse = mov_metadata_track_or_disc_number; break;
247 case MKTAG( 'd','i','s','k'): key = "disc";
248 parse = mov_metadata_track_or_disc_number; break;
249 case MKTAG( 't','v','e','s'): key = "episode_sort";
250 parse = mov_metadata_int8_bypass_padding; break;
251 case MKTAG( 't','v','s','n'): key = "season_number";
252 parse = mov_metadata_int8_bypass_padding; break;
253 case MKTAG( 's','t','i','k'): key = "media_type";
254 parse = mov_metadata_int8_no_padding; break;
255 case MKTAG( 'h','d','v','d'): key = "hd_video";
256 parse = mov_metadata_int8_no_padding; break;
257 case MKTAG( 'p','g','a','p'): key = "gapless_playback";
258 parse = mov_metadata_int8_no_padding; break;
261 if (c->itunes_metadata && atom.size > 8) {
262 int data_size = avio_rb32(pb);
263 int tag = avio_rl32(pb);
264 if (tag == MKTAG('d','a','t','a')) {
265 data_type = avio_rb32(pb); // type
266 avio_rb32(pb); // unknown
267 str_size = data_size - 16;
270 if (atom.type == MKTAG('c', 'o', 'v', 'r')) {
271 int ret = mov_read_covr(c, pb, data_type, str_size);
273 av_log(c->fc, AV_LOG_ERROR, "Error parsing cover art.\n");
278 } else if (atom.size > 4 && key && !c->itunes_metadata) {
279 str_size = avio_rb16(pb); // string length
280 langcode = avio_rb16(pb);
281 ff_mov_lang_to_iso639(langcode, language);
284 str_size = atom.size;
286 #ifdef MOV_EXPORT_ALL_METADATA
288 snprintf(tmp_key, 5, "%.4s", (char*)&atom.type);
296 return AVERROR_INVALIDDATA;
298 str_size = FFMIN3(sizeof(str)-1, str_size, atom.size);
301 parse(c, pb, str_size, key);
303 if (data_type == 3 || (data_type == 0 && langcode < 0x800)) { // MAC Encoded
304 mov_read_mac_string(c, pb, str_size, str, sizeof(str));
306 avio_read(pb, str, str_size);
309 av_dict_set(&c->fc->metadata, key, str, 0);
310 if (*language && strcmp(language, "und")) {
311 snprintf(key2, sizeof(key2), "%s-%s", key, language);
312 av_dict_set(&c->fc->metadata, key2, str, 0);
315 av_dlog(c->fc, "lang \"%3s\" ", language);
316 av_dlog(c->fc, "tag \"%s\" value \"%s\" atom \"%.4s\" %d %"PRId64"\n",
317 key, str, (char*)&atom.type, str_size, atom.size);
322 static int mov_read_chpl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
325 int i, nb_chapters, str_len, version;
328 if ((atom.size -= 5) < 0)
331 version = avio_r8(pb);
334 avio_rb32(pb); // ???
335 nb_chapters = avio_r8(pb);
337 for (i = 0; i < nb_chapters; i++) {
341 start = avio_rb64(pb);
342 str_len = avio_r8(pb);
344 if ((atom.size -= 9+str_len) < 0)
347 avio_read(pb, str, str_len);
349 avpriv_new_chapter(c->fc, i, (AVRational){1,10000000}, start, AV_NOPTS_VALUE, str);
354 static int mov_read_dref(MOVContext *c, AVIOContext *pb, MOVAtom atom)
357 MOVStreamContext *sc;
360 if (c->fc->nb_streams < 1)
362 st = c->fc->streams[c->fc->nb_streams-1];
365 avio_rb32(pb); // version + flags
366 entries = avio_rb32(pb);
367 if (entries >= UINT_MAX / sizeof(*sc->drefs))
368 return AVERROR_INVALIDDATA;
370 sc->drefs = av_mallocz(entries * sizeof(*sc->drefs));
372 return AVERROR(ENOMEM);
373 sc->drefs_count = entries;
375 for (i = 0; i < sc->drefs_count; i++) {
376 MOVDref *dref = &sc->drefs[i];
377 uint32_t size = avio_rb32(pb);
378 int64_t next = avio_tell(pb) + size - 4;
381 return AVERROR_INVALIDDATA;
383 dref->type = avio_rl32(pb);
384 avio_rb32(pb); // version + flags
385 av_dlog(c->fc, "type %.4s size %d\n", (char*)&dref->type, size);
387 if (dref->type == MKTAG('a','l','i','s') && size > 150) {
388 /* macintosh alias record */
389 uint16_t volume_len, len;
394 volume_len = avio_r8(pb);
395 volume_len = FFMIN(volume_len, 27);
396 avio_read(pb, dref->volume, 27);
397 dref->volume[volume_len] = 0;
398 av_log(c->fc, AV_LOG_DEBUG, "volume %s, len %d\n", dref->volume, volume_len);
403 len = FFMIN(len, 63);
404 avio_read(pb, dref->filename, 63);
405 dref->filename[len] = 0;
406 av_log(c->fc, AV_LOG_DEBUG, "filename %s, len %d\n", dref->filename, len);
410 /* read next level up_from_alias/down_to_target */
411 dref->nlvl_from = avio_rb16(pb);
412 dref->nlvl_to = avio_rb16(pb);
413 av_log(c->fc, AV_LOG_DEBUG, "nlvl from %d, nlvl to %d\n",
414 dref->nlvl_from, dref->nlvl_to);
418 for (type = 0; type != -1 && avio_tell(pb) < next; ) {
421 type = avio_rb16(pb);
423 av_log(c->fc, AV_LOG_DEBUG, "type %d, len %d\n", type, len);
426 if (type == 2) { // absolute path
428 dref->path = av_mallocz(len+1);
430 return AVERROR(ENOMEM);
431 avio_read(pb, dref->path, len);
432 if (len > volume_len && !strncmp(dref->path, dref->volume, volume_len)) {
434 memmove(dref->path, dref->path+volume_len, len);
437 for (j = 0; j < len; j++)
438 if (dref->path[j] == ':')
440 av_log(c->fc, AV_LOG_DEBUG, "path %s\n", dref->path);
441 } else if (type == 0) { // directory name
443 dref->dir = av_malloc(len+1);
445 return AVERROR(ENOMEM);
446 avio_read(pb, dref->dir, len);
448 for (j = 0; j < len; j++)
449 if (dref->dir[j] == ':')
451 av_log(c->fc, AV_LOG_DEBUG, "dir %s\n", dref->dir);
456 avio_seek(pb, next, SEEK_SET);
461 static int mov_read_hdlr(MOVContext *c, AVIOContext *pb, MOVAtom atom)
465 uint32_t av_unused ctype;
467 if (c->fc->nb_streams < 1) // meta before first trak
470 st = c->fc->streams[c->fc->nb_streams-1];
472 avio_r8(pb); /* version */
473 avio_rb24(pb); /* flags */
476 ctype = avio_rl32(pb);
477 type = avio_rl32(pb); /* component subtype */
479 av_dlog(c->fc, "ctype= %.4s (0x%08x)\n", (char*)&ctype, ctype);
480 av_dlog(c->fc, "stype= %.4s\n", (char*)&type);
482 if (type == MKTAG('v','i','d','e'))
483 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
484 else if (type == MKTAG('s','o','u','n'))
485 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
486 else if (type == MKTAG('m','1','a',' '))
487 st->codec->codec_id = AV_CODEC_ID_MP2;
488 else if ((type == MKTAG('s','u','b','p')) || (type == MKTAG('c','l','c','p')))
489 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
491 avio_rb32(pb); /* component manufacture */
492 avio_rb32(pb); /* component flags */
493 avio_rb32(pb); /* component flags mask */
498 int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb, MOVAtom atom)
503 if (fc->nb_streams < 1)
505 st = fc->streams[fc->nb_streams-1];
507 avio_rb32(pb); /* version + flags */
508 ff_mp4_read_descr(fc, pb, &tag);
509 if (tag == MP4ESDescrTag) {
510 ff_mp4_parse_es_descr(pb, NULL);
512 avio_rb16(pb); /* ID */
514 ff_mp4_read_descr(fc, pb, &tag);
515 if (tag == MP4DecConfigDescrTag)
516 ff_mp4_read_dec_config_descr(fc, st, pb);
520 static int mov_read_esds(MOVContext *c, AVIOContext *pb, MOVAtom atom)
522 return ff_mov_read_esds(c->fc, pb, atom);
525 static int mov_read_dac3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
528 int ac3info, acmod, lfeon, bsmod;
530 if (c->fc->nb_streams < 1)
532 st = c->fc->streams[c->fc->nb_streams-1];
534 ac3info = avio_rb24(pb);
535 bsmod = (ac3info >> 14) & 0x7;
536 acmod = (ac3info >> 11) & 0x7;
537 lfeon = (ac3info >> 10) & 0x1;
538 st->codec->channels = ((int[]){2,1,2,3,3,4,4,5})[acmod] + lfeon;
539 st->codec->channel_layout = avpriv_ac3_channel_layout_tab[acmod];
541 st->codec->channel_layout |= AV_CH_LOW_FREQUENCY;
542 st->codec->audio_service_type = bsmod;
543 if (st->codec->channels > 1 && bsmod == 0x7)
544 st->codec->audio_service_type = AV_AUDIO_SERVICE_TYPE_KARAOKE;
549 static int mov_read_dec3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
552 int eac3info, acmod, lfeon, bsmod;
554 if (c->fc->nb_streams < 1)
556 st = c->fc->streams[c->fc->nb_streams-1];
558 /* No need to parse fields for additional independent substreams and its
559 * associated dependent substreams since libavcodec's E-AC-3 decoder
560 * does not support them yet. */
561 avio_rb16(pb); /* data_rate and num_ind_sub */
562 eac3info = avio_rb24(pb);
563 bsmod = (eac3info >> 12) & 0x1f;
564 acmod = (eac3info >> 9) & 0x7;
565 lfeon = (eac3info >> 8) & 0x1;
566 st->codec->channel_layout = avpriv_ac3_channel_layout_tab[acmod];
568 st->codec->channel_layout |= AV_CH_LOW_FREQUENCY;
569 st->codec->channels = av_get_channel_layout_nb_channels(st->codec->channel_layout);
570 st->codec->audio_service_type = bsmod;
571 if (st->codec->channels > 1 && bsmod == 0x7)
572 st->codec->audio_service_type = AV_AUDIO_SERVICE_TYPE_KARAOKE;
577 static int mov_read_chan(MOVContext *c, AVIOContext *pb, MOVAtom atom)
581 if (c->fc->nb_streams < 1)
583 st = c->fc->streams[c->fc->nb_streams-1];
588 ff_mov_read_chan(c->fc, pb, st, atom.size - 4);
593 static int mov_read_wfex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
597 if (c->fc->nb_streams < 1)
599 st = c->fc->streams[c->fc->nb_streams-1];
601 ff_get_wav_header(pb, st->codec, atom.size);
606 static int mov_read_pasp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
608 const int num = avio_rb32(pb);
609 const int den = avio_rb32(pb);
612 if (c->fc->nb_streams < 1)
614 st = c->fc->streams[c->fc->nb_streams-1];
616 if ((st->sample_aspect_ratio.den != 1 || st->sample_aspect_ratio.num) && // default
617 (den != st->sample_aspect_ratio.den || num != st->sample_aspect_ratio.num)) {
618 av_log(c->fc, AV_LOG_WARNING,
619 "sample aspect ratio already set to %d:%d, ignoring 'pasp' atom (%d:%d)\n",
620 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
622 } else if (den != 0) {
623 st->sample_aspect_ratio.num = num;
624 st->sample_aspect_ratio.den = den;
629 /* this atom contains actual media data */
630 static int mov_read_mdat(MOVContext *c, AVIOContext *pb, MOVAtom atom)
632 if (atom.size == 0) /* wrong one (MP4) */
635 return 0; /* now go for moov */
638 /* read major brand, minor version and compatible brands and store them as metadata */
639 static int mov_read_ftyp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
643 char minor_ver_str[11]; /* 32 bit integer -> 10 digits + null */
644 char* comp_brands_str;
645 uint8_t type[5] = {0};
647 avio_read(pb, type, 4);
648 if (strcmp(type, "qt "))
650 av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
651 av_dict_set(&c->fc->metadata, "major_brand", type, 0);
652 minor_ver = avio_rb32(pb); /* minor version */
653 snprintf(minor_ver_str, sizeof(minor_ver_str), "%d", minor_ver);
654 av_dict_set(&c->fc->metadata, "minor_version", minor_ver_str, 0);
656 comp_brand_size = atom.size - 8;
657 if (comp_brand_size < 0)
658 return AVERROR_INVALIDDATA;
659 comp_brands_str = av_malloc(comp_brand_size + 1); /* Add null terminator */
660 if (!comp_brands_str)
661 return AVERROR(ENOMEM);
662 avio_read(pb, comp_brands_str, comp_brand_size);
663 comp_brands_str[comp_brand_size] = 0;
664 av_dict_set(&c->fc->metadata, "compatible_brands", comp_brands_str, 0);
665 av_freep(&comp_brands_str);
670 /* this atom should contain all header atoms */
671 static int mov_read_moov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
675 if ((ret = mov_read_default(c, pb, atom)) < 0)
677 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
678 /* so we don't parse the whole file if over a network */
680 return 0; /* now go for mdat */
683 static int mov_read_moof(MOVContext *c, AVIOContext *pb, MOVAtom atom)
685 c->fragment.moof_offset = avio_tell(pb) - 8;
686 av_dlog(c->fc, "moof offset %"PRIx64"\n", c->fragment.moof_offset);
687 return mov_read_default(c, pb, atom);
690 static void mov_metadata_creation_time(AVDictionary **metadata, time_t time)
695 time -= 2082844800; /* seconds between 1904-01-01 and Epoch */
698 strftime(buffer, sizeof(buffer), "%Y-%m-%d %H:%M:%S", ptm);
699 av_dict_set(metadata, "creation_time", buffer, 0);
703 static int mov_read_mdhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
706 MOVStreamContext *sc;
708 char language[4] = {0};
710 time_t creation_time;
712 if (c->fc->nb_streams < 1)
714 st = c->fc->streams[c->fc->nb_streams-1];
717 version = avio_r8(pb);
719 av_log_ask_for_sample(c, "unsupported version %d\n", version);
720 return AVERROR_PATCHWELCOME;
722 avio_rb24(pb); /* flags */
724 creation_time = avio_rb64(pb);
727 creation_time = avio_rb32(pb);
728 avio_rb32(pb); /* modification time */
730 mov_metadata_creation_time(&st->metadata, creation_time);
732 sc->time_scale = avio_rb32(pb);
733 st->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
735 lang = avio_rb16(pb); /* language */
736 if (ff_mov_lang_to_iso639(lang, language))
737 av_dict_set(&st->metadata, "language", language, 0);
738 avio_rb16(pb); /* quality */
743 static int mov_read_mvhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
745 time_t creation_time;
746 int version = avio_r8(pb); /* version */
747 avio_rb24(pb); /* flags */
750 creation_time = avio_rb64(pb);
753 creation_time = avio_rb32(pb);
754 avio_rb32(pb); /* modification time */
756 mov_metadata_creation_time(&c->fc->metadata, creation_time);
757 c->time_scale = avio_rb32(pb); /* time scale */
759 av_dlog(c->fc, "time scale = %i\n", c->time_scale);
761 c->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
762 avio_rb32(pb); /* preferred scale */
764 avio_rb16(pb); /* preferred volume */
766 avio_skip(pb, 10); /* reserved */
768 avio_skip(pb, 36); /* display matrix */
770 avio_rb32(pb); /* preview time */
771 avio_rb32(pb); /* preview duration */
772 avio_rb32(pb); /* poster time */
773 avio_rb32(pb); /* selection time */
774 avio_rb32(pb); /* selection duration */
775 avio_rb32(pb); /* current time */
776 avio_rb32(pb); /* next track ID */
781 static int mov_read_smi(MOVContext *c, AVIOContext *pb, MOVAtom atom)
785 if (c->fc->nb_streams < 1)
787 st = c->fc->streams[c->fc->nb_streams-1];
789 if ((uint64_t)atom.size > (1<<30))
790 return AVERROR_INVALIDDATA;
792 // currently SVQ3 decoder expect full STSD header - so let's fake it
793 // this should be fixed and just SMI header should be passed
794 av_free(st->codec->extradata);
795 st->codec->extradata = av_mallocz(atom.size + 0x5a + FF_INPUT_BUFFER_PADDING_SIZE);
796 if (!st->codec->extradata)
797 return AVERROR(ENOMEM);
798 st->codec->extradata_size = 0x5a + atom.size;
799 memcpy(st->codec->extradata, "SVQ3", 4); // fake
800 avio_read(pb, st->codec->extradata + 0x5a, atom.size);
801 av_dlog(c->fc, "Reading SMI %"PRId64" %s\n", atom.size, st->codec->extradata + 0x5a);
805 static int mov_read_enda(MOVContext *c, AVIOContext *pb, MOVAtom atom)
810 if (c->fc->nb_streams < 1)
812 st = c->fc->streams[c->fc->nb_streams-1];
814 little_endian = avio_rb16(pb);
815 av_dlog(c->fc, "enda %d\n", little_endian);
816 if (little_endian == 1) {
817 switch (st->codec->codec_id) {
818 case AV_CODEC_ID_PCM_S24BE:
819 st->codec->codec_id = AV_CODEC_ID_PCM_S24LE;
821 case AV_CODEC_ID_PCM_S32BE:
822 st->codec->codec_id = AV_CODEC_ID_PCM_S32LE;
824 case AV_CODEC_ID_PCM_F32BE:
825 st->codec->codec_id = AV_CODEC_ID_PCM_F32LE;
827 case AV_CODEC_ID_PCM_F64BE:
828 st->codec->codec_id = AV_CODEC_ID_PCM_F64LE;
837 static int mov_read_fiel(MOVContext *c, AVIOContext *pb, MOVAtom atom)
840 unsigned mov_field_order;
841 enum AVFieldOrder decoded_field_order = AV_FIELD_UNKNOWN;
843 if (c->fc->nb_streams < 1) // will happen with jp2 files
845 st = c->fc->streams[c->fc->nb_streams-1];
847 return AVERROR_INVALIDDATA;
848 mov_field_order = avio_rb16(pb);
849 if ((mov_field_order & 0xFF00) == 0x0100)
850 decoded_field_order = AV_FIELD_PROGRESSIVE;
851 else if ((mov_field_order & 0xFF00) == 0x0200) {
852 switch (mov_field_order & 0xFF) {
853 case 0x01: decoded_field_order = AV_FIELD_TT;
855 case 0x06: decoded_field_order = AV_FIELD_BB;
857 case 0x09: decoded_field_order = AV_FIELD_TB;
859 case 0x0E: decoded_field_order = AV_FIELD_BT;
863 if (decoded_field_order == AV_FIELD_UNKNOWN && mov_field_order) {
864 av_log(NULL, AV_LOG_ERROR, "Unknown MOV field order 0x%04x\n", mov_field_order);
866 st->codec->field_order = decoded_field_order;
871 /* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
872 static int mov_read_extradata(MOVContext *c, AVIOContext *pb, MOVAtom atom)
878 if (c->fc->nb_streams < 1) // will happen with jp2 files
880 st= c->fc->streams[c->fc->nb_streams-1];
881 size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
882 if (size > INT_MAX || (uint64_t)atom.size > INT_MAX)
883 return AVERROR_INVALIDDATA;
884 buf= av_realloc(st->codec->extradata, size);
886 return AVERROR(ENOMEM);
887 st->codec->extradata= buf;
888 buf+= st->codec->extradata_size;
889 st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE;
890 AV_WB32( buf , atom.size + 8);
891 AV_WL32( buf + 4, atom.type);
892 avio_read(pb, buf + 8, atom.size);
896 static int mov_read_wave(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))
905 return AVERROR_INVALIDDATA;
907 if (st->codec->codec_id == AV_CODEC_ID_QDM2 || st->codec->codec_id == AV_CODEC_ID_QDMC) {
908 // pass all frma atom to codec, needed at least for QDMC and QDM2
909 av_free(st->codec->extradata);
910 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
911 if (!st->codec->extradata)
912 return AVERROR(ENOMEM);
913 st->codec->extradata_size = atom.size;
914 avio_read(pb, st->codec->extradata, atom.size);
915 } else if (atom.size > 8) { /* to read frma, esds atoms */
917 if ((ret = mov_read_default(c, pb, atom)) < 0)
920 avio_skip(pb, atom.size);
925 * This function reads atom content and puts data in extradata without tag
926 * nor size unlike mov_read_extradata.
928 static int mov_read_glbl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
932 if (c->fc->nb_streams < 1)
934 st = c->fc->streams[c->fc->nb_streams-1];
936 if ((uint64_t)atom.size > (1<<30))
937 return AVERROR_INVALIDDATA;
939 if (atom.size >= 10) {
940 // Broken files created by legacy versions of libavformat will
941 // wrap a whole fiel atom inside of a glbl atom.
942 unsigned size = avio_rb32(pb);
943 unsigned type = avio_rl32(pb);
944 avio_seek(pb, -8, SEEK_CUR);
945 if (type == MKTAG('f','i','e','l') && size == atom.size)
946 return mov_read_default(c, pb, atom);
948 av_free(st->codec->extradata);
949 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
950 if (!st->codec->extradata)
951 return AVERROR(ENOMEM);
952 st->codec->extradata_size = atom.size;
953 avio_read(pb, st->codec->extradata, atom.size);
957 static int mov_read_dvc1(MOVContext *c, AVIOContext *pb, MOVAtom atom)
960 uint8_t profile_level;
962 if (c->fc->nb_streams < 1)
964 st = c->fc->streams[c->fc->nb_streams-1];
966 if (atom.size >= (1<<28) || atom.size < 7)
967 return AVERROR_INVALIDDATA;
969 profile_level = avio_r8(pb);
970 if ((profile_level & 0xf0) != 0xc0)
973 av_free(st->codec->extradata);
974 st->codec->extradata = av_mallocz(atom.size - 7 + FF_INPUT_BUFFER_PADDING_SIZE);
975 if (!st->codec->extradata)
976 return AVERROR(ENOMEM);
977 st->codec->extradata_size = atom.size - 7;
978 avio_seek(pb, 6, SEEK_CUR);
979 avio_read(pb, st->codec->extradata, st->codec->extradata_size);
984 * An strf atom is a BITMAPINFOHEADER struct. This struct is 40 bytes itself,
985 * but can have extradata appended at the end after the 40 bytes belonging
988 static int mov_read_strf(MOVContext *c, AVIOContext *pb, MOVAtom atom)
992 if (c->fc->nb_streams < 1)
996 st = c->fc->streams[c->fc->nb_streams-1];
998 if ((uint64_t)atom.size > (1<<30))
999 return AVERROR_INVALIDDATA;
1001 av_free(st->codec->extradata);
1002 st->codec->extradata = av_mallocz(atom.size - 40 + FF_INPUT_BUFFER_PADDING_SIZE);
1003 if (!st->codec->extradata)
1004 return AVERROR(ENOMEM);
1005 st->codec->extradata_size = atom.size - 40;
1007 avio_read(pb, st->codec->extradata, atom.size - 40);
1011 static int mov_read_stco(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1014 MOVStreamContext *sc;
1015 unsigned int i, entries;
1017 if (c->fc->nb_streams < 1)
1019 st = c->fc->streams[c->fc->nb_streams-1];
1022 avio_r8(pb); /* version */
1023 avio_rb24(pb); /* flags */
1025 entries = avio_rb32(pb);
1029 if (entries >= UINT_MAX/sizeof(int64_t))
1030 return AVERROR_INVALIDDATA;
1032 sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
1033 if (!sc->chunk_offsets)
1034 return AVERROR(ENOMEM);
1035 sc->chunk_count = entries;
1037 if (atom.type == MKTAG('s','t','c','o'))
1038 for (i = 0; i < entries && !pb->eof_reached; i++)
1039 sc->chunk_offsets[i] = avio_rb32(pb);
1040 else if (atom.type == MKTAG('c','o','6','4'))
1041 for (i = 0; i < entries && !pb->eof_reached; i++)
1042 sc->chunk_offsets[i] = avio_rb64(pb);
1044 return AVERROR_INVALIDDATA;
1046 sc->chunk_count = i;
1048 if (pb->eof_reached)
1055 * Compute codec id for 'lpcm' tag.
1056 * See CoreAudioTypes and AudioStreamBasicDescription at Apple.
1058 enum AVCodecID ff_mov_get_lpcm_codec_id(int bps, int flags)
1060 if (flags & 1) { // floating point
1061 if (flags & 2) { // big endian
1062 if (bps == 32) return AV_CODEC_ID_PCM_F32BE;
1063 else if (bps == 64) return AV_CODEC_ID_PCM_F64BE;
1065 if (bps == 32) return AV_CODEC_ID_PCM_F32LE;
1066 else if (bps == 64) return AV_CODEC_ID_PCM_F64LE;
1072 if (flags & 4) return AV_CODEC_ID_PCM_S8;
1073 else return AV_CODEC_ID_PCM_U8;
1074 else if (bps == 16) return AV_CODEC_ID_PCM_S16BE;
1075 else if (bps == 24) return AV_CODEC_ID_PCM_S24BE;
1076 else if (bps == 32) return AV_CODEC_ID_PCM_S32BE;
1079 if (flags & 4) return AV_CODEC_ID_PCM_S8;
1080 else return AV_CODEC_ID_PCM_U8;
1081 else if (bps == 16) return AV_CODEC_ID_PCM_S16LE;
1082 else if (bps == 24) return AV_CODEC_ID_PCM_S24LE;
1083 else if (bps == 32) return AV_CODEC_ID_PCM_S32LE;
1086 return AV_CODEC_ID_NONE;
1089 int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries)
1092 MOVStreamContext *sc;
1093 int j, pseudo_stream_id;
1095 if (c->fc->nb_streams < 1)
1097 st = c->fc->streams[c->fc->nb_streams-1];
1100 for (pseudo_stream_id = 0;
1101 pseudo_stream_id < entries && !pb->eof_reached;
1102 pseudo_stream_id++) {
1103 //Parsing Sample description table
1106 MOVAtom a = { AV_RL32("stsd") };
1107 int64_t start_pos = avio_tell(pb);
1108 uint32_t size = avio_rb32(pb); /* size */
1109 uint32_t format = avio_rl32(pb); /* data format */
1112 avio_rb32(pb); /* reserved */
1113 avio_rb16(pb); /* reserved */
1114 dref_id = avio_rb16(pb);
1116 av_log(c->fc, AV_LOG_ERROR, "invalid size %d in stsd\n", size);
1117 return AVERROR_INVALIDDATA;
1120 if (st->codec->codec_tag &&
1121 st->codec->codec_tag != format &&
1122 (c->fc->video_codec_id ? ff_codec_get_id(ff_codec_movvideo_tags, format) != c->fc->video_codec_id
1123 : st->codec->codec_tag != MKTAG('j','p','e','g'))
1125 /* Multiple fourcc, we skip JPEG. This is not correct, we should
1126 * export it as a separate AVStream but this needs a few changes
1127 * in the MOV demuxer, patch welcome. */
1129 av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n");
1130 avio_skip(pb, size - (avio_tell(pb) - start_pos));
1133 /* we cannot demux concatenated h264 streams because of different extradata */
1134 if (st->codec->codec_tag && st->codec->codec_tag == AV_RL32("avc1"))
1136 sc->pseudo_stream_id = st->codec->codec_tag ? -1 : pseudo_stream_id;
1137 sc->dref_id= dref_id;
1139 st->codec->codec_tag = format;
1140 id = ff_codec_get_id(ff_codec_movaudio_tags, format);
1141 if (id<=0 && ((format&0xFFFF) == 'm'+('s'<<8) || (format&0xFFFF) == 'T'+('S'<<8)))
1142 id = ff_codec_get_id(ff_codec_wav_tags, av_bswap32(format)&0xFFFF);
1144 if (st->codec->codec_type != AVMEDIA_TYPE_VIDEO && id > 0) {
1145 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
1146 } else if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO && /* do not overwrite codec type */
1147 format && format != MKTAG('m','p','4','s')) { /* skip old asf mpeg4 tag */
1148 id = ff_codec_get_id(ff_codec_movvideo_tags, format);
1150 id = ff_codec_get_id(ff_codec_bmp_tags, format);
1152 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
1153 else if (st->codec->codec_type == AVMEDIA_TYPE_DATA){
1154 id = ff_codec_get_id(ff_codec_movsubtitle_tags, format);
1156 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
1160 av_dlog(c->fc, "size=%d 4CC= %c%c%c%c codec_type=%d\n", size,
1161 (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff,
1162 (format >> 24) & 0xff, st->codec->codec_type);
1164 if (st->codec->codec_type==AVMEDIA_TYPE_VIDEO) {
1165 unsigned int color_depth, len;
1166 int color_greyscale;
1169 st->codec->codec_id = id;
1170 avio_rb16(pb); /* version */
1171 avio_rb16(pb); /* revision level */
1172 avio_rb32(pb); /* vendor */
1173 avio_rb32(pb); /* temporal quality */
1174 avio_rb32(pb); /* spatial quality */
1176 st->codec->width = avio_rb16(pb); /* width */
1177 st->codec->height = avio_rb16(pb); /* height */
1179 avio_rb32(pb); /* horiz resolution */
1180 avio_rb32(pb); /* vert resolution */
1181 avio_rb32(pb); /* data size, always 0 */
1182 avio_rb16(pb); /* frames per samples */
1184 len = avio_r8(pb); /* codec name, pascal string */
1187 mov_read_mac_string(c, pb, len, st->codec->codec_name, 32);
1189 avio_skip(pb, 31 - len);
1190 /* codec_tag YV12 triggers an UV swap in rawdec.c */
1191 if (!memcmp(st->codec->codec_name, "Planar Y'CbCr 8-bit 4:2:0", 25))
1192 st->codec->codec_tag=MKTAG('I', '4', '2', '0');
1194 st->codec->bits_per_coded_sample = avio_rb16(pb); /* depth */
1195 color_table_id = avio_rb16(pb); /* colortable id */
1196 av_dlog(c->fc, "depth %d, ctab id %d\n",
1197 st->codec->bits_per_coded_sample, color_table_id);
1198 /* figure out the palette situation */
1199 color_depth = st->codec->bits_per_coded_sample & 0x1F;
1200 color_greyscale = st->codec->bits_per_coded_sample & 0x20;
1202 /* if the depth is 2, 4, or 8 bpp, file is palettized */
1203 if ((color_depth == 2) || (color_depth == 4) ||
1204 (color_depth == 8)) {
1205 /* for palette traversal */
1206 unsigned int color_start, color_count, color_end;
1207 unsigned char r, g, b;
1209 if (color_greyscale) {
1210 int color_index, color_dec;
1211 /* compute the greyscale palette */
1212 st->codec->bits_per_coded_sample = color_depth;
1213 color_count = 1 << color_depth;
1215 color_dec = 256 / (color_count - 1);
1216 for (j = 0; j < color_count; j++) {
1217 r = g = b = color_index;
1219 (r << 16) | (g << 8) | (b);
1220 color_index -= color_dec;
1221 if (color_index < 0)
1224 } else if (color_table_id) {
1225 const uint8_t *color_table;
1226 /* if flag bit 3 is set, use the default palette */
1227 color_count = 1 << color_depth;
1228 if (color_depth == 2)
1229 color_table = ff_qt_default_palette_4;
1230 else if (color_depth == 4)
1231 color_table = ff_qt_default_palette_16;
1233 color_table = ff_qt_default_palette_256;
1235 for (j = 0; j < color_count; j++) {
1236 r = color_table[j * 3 + 0];
1237 g = color_table[j * 3 + 1];
1238 b = color_table[j * 3 + 2];
1240 (r << 16) | (g << 8) | (b);
1243 /* load the palette from the file */
1244 color_start = avio_rb32(pb);
1245 color_count = avio_rb16(pb);
1246 color_end = avio_rb16(pb);
1247 if ((color_start <= 255) &&
1248 (color_end <= 255)) {
1249 for (j = color_start; j <= color_end; j++) {
1250 /* each R, G, or B component is 16 bits;
1251 * only use the top 8 bits; skip alpha bytes
1262 (r << 16) | (g << 8) | (b);
1266 sc->has_palette = 1;
1268 } else if (st->codec->codec_type==AVMEDIA_TYPE_AUDIO) {
1269 int bits_per_sample, flags;
1270 uint16_t version = avio_rb16(pb);
1272 st->codec->codec_id = id;
1273 avio_rb16(pb); /* revision level */
1274 avio_rb32(pb); /* vendor */
1276 st->codec->channels = avio_rb16(pb); /* channel count */
1277 av_dlog(c->fc, "audio channels %d\n", st->codec->channels);
1278 st->codec->bits_per_coded_sample = avio_rb16(pb); /* sample size */
1280 sc->audio_cid = avio_rb16(pb);
1281 avio_rb16(pb); /* packet size = 0 */
1283 st->codec->sample_rate = ((avio_rb32(pb) >> 16));
1285 //Read QT version 1 fields. In version 0 these do not exist.
1286 av_dlog(c->fc, "version =%d, isom =%d\n",version,c->isom);
1289 sc->samples_per_frame = avio_rb32(pb);
1290 avio_rb32(pb); /* bytes per packet */
1291 sc->bytes_per_frame = avio_rb32(pb);
1292 avio_rb32(pb); /* bytes per sample */
1293 } else if (version==2) {
1294 avio_rb32(pb); /* sizeof struct only */
1295 st->codec->sample_rate = av_int2double(avio_rb64(pb)); /* float 64 */
1296 st->codec->channels = avio_rb32(pb);
1297 avio_rb32(pb); /* always 0x7F000000 */
1298 st->codec->bits_per_coded_sample = avio_rb32(pb); /* bits per channel if sound is uncompressed */
1299 flags = avio_rb32(pb); /* lpcm format specific flag */
1300 sc->bytes_per_frame = avio_rb32(pb); /* bytes per audio packet if constant */
1301 sc->samples_per_frame = avio_rb32(pb); /* lpcm frames per audio packet if constant */
1302 if (format == MKTAG('l','p','c','m'))
1303 st->codec->codec_id = ff_mov_get_lpcm_codec_id(st->codec->bits_per_coded_sample, flags);
1307 switch (st->codec->codec_id) {
1308 case AV_CODEC_ID_PCM_S8:
1309 case AV_CODEC_ID_PCM_U8:
1310 if (st->codec->bits_per_coded_sample == 16)
1311 st->codec->codec_id = AV_CODEC_ID_PCM_S16BE;
1313 case AV_CODEC_ID_PCM_S16LE:
1314 case AV_CODEC_ID_PCM_S16BE:
1315 if (st->codec->bits_per_coded_sample == 8)
1316 st->codec->codec_id = AV_CODEC_ID_PCM_S8;
1317 else if (st->codec->bits_per_coded_sample == 24)
1318 st->codec->codec_id =
1319 st->codec->codec_id == AV_CODEC_ID_PCM_S16BE ?
1320 AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE;
1322 /* set values for old format before stsd version 1 appeared */
1323 case AV_CODEC_ID_MACE3:
1324 sc->samples_per_frame = 6;
1325 sc->bytes_per_frame = 2*st->codec->channels;
1327 case AV_CODEC_ID_MACE6:
1328 sc->samples_per_frame = 6;
1329 sc->bytes_per_frame = 1*st->codec->channels;
1331 case AV_CODEC_ID_ADPCM_IMA_QT:
1332 sc->samples_per_frame = 64;
1333 sc->bytes_per_frame = 34*st->codec->channels;
1335 case AV_CODEC_ID_GSM:
1336 sc->samples_per_frame = 160;
1337 sc->bytes_per_frame = 33;
1343 bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
1344 if (bits_per_sample) {
1345 st->codec->bits_per_coded_sample = bits_per_sample;
1346 sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
1348 } else if (st->codec->codec_type==AVMEDIA_TYPE_SUBTITLE){
1349 // ttxt stsd contains display flags, justification, background
1350 // color, fonts, and default styles, so fake an atom to read it
1351 MOVAtom fake_atom = { .size = size - (avio_tell(pb) - start_pos) };
1352 if (format != AV_RL32("mp4s")) // mp4s contains a regular esds atom
1353 mov_read_glbl(c, pb, fake_atom);
1354 st->codec->codec_id= id;
1355 st->codec->width = sc->width;
1356 st->codec->height = sc->height;
1358 /* other codec type, just skip (rtp, mp4s, tmcd ...) */
1359 avio_skip(pb, size - (avio_tell(pb) - start_pos));
1361 /* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */
1362 a.size = size - (avio_tell(pb) - start_pos);
1365 if ((ret = mov_read_default(c, pb, a)) < 0)
1367 } else if (a.size > 0)
1368 avio_skip(pb, a.size);
1371 if (pb->eof_reached)
1374 if (st->codec->codec_type==AVMEDIA_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1)
1375 st->codec->sample_rate= sc->time_scale;
1377 /* special codec parameters handling */
1378 switch (st->codec->codec_id) {
1379 #if CONFIG_DV_DEMUXER
1380 case AV_CODEC_ID_DVAUDIO:
1381 c->dv_fctx = avformat_alloc_context();
1382 c->dv_demux = avpriv_dv_init_demux(c->dv_fctx);
1384 av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
1385 return AVERROR(ENOMEM);
1387 sc->dv_audio_container = 1;
1388 st->codec->codec_id = AV_CODEC_ID_PCM_S16LE;
1391 /* no ifdef since parameters are always those */
1392 case AV_CODEC_ID_QCELP:
1393 // force sample rate for qcelp when not stored in mov
1394 if (st->codec->codec_tag != MKTAG('Q','c','l','p'))
1395 st->codec->sample_rate = 8000;
1396 st->codec->channels= 1; /* really needed */
1398 case AV_CODEC_ID_AMR_NB:
1399 st->codec->channels= 1; /* really needed */
1400 /* force sample rate for amr, stsd in 3gp does not store sample rate */
1401 st->codec->sample_rate = 8000;
1403 case AV_CODEC_ID_AMR_WB:
1404 st->codec->channels = 1;
1405 st->codec->sample_rate = 16000;
1407 case AV_CODEC_ID_MP2:
1408 case AV_CODEC_ID_MP3:
1409 st->codec->codec_type = AVMEDIA_TYPE_AUDIO; /* force type after stsd for m1a hdlr */
1410 st->need_parsing = AVSTREAM_PARSE_FULL;
1412 case AV_CODEC_ID_GSM:
1413 case AV_CODEC_ID_ADPCM_MS:
1414 case AV_CODEC_ID_ADPCM_IMA_WAV:
1415 case AV_CODEC_ID_ILBC:
1416 st->codec->block_align = sc->bytes_per_frame;
1418 case AV_CODEC_ID_ALAC:
1419 if (st->codec->extradata_size == 36) {
1420 st->codec->channels = AV_RB8 (st->codec->extradata+21);
1421 st->codec->sample_rate = AV_RB32(st->codec->extradata+32);
1424 case AV_CODEC_ID_VC1:
1425 st->need_parsing = AVSTREAM_PARSE_FULL;
1434 static int mov_read_stsd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1438 avio_r8(pb); /* version */
1439 avio_rb24(pb); /* flags */
1440 entries = avio_rb32(pb);
1442 return ff_mov_read_stsd_entries(c, pb, entries);
1445 static int mov_read_stsc(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, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
1465 if (entries >= UINT_MAX / sizeof(*sc->stsc_data))
1466 return AVERROR_INVALIDDATA;
1467 sc->stsc_data = av_malloc(entries * sizeof(*sc->stsc_data));
1469 return AVERROR(ENOMEM);
1471 for (i = 0; i < entries && !pb->eof_reached; i++) {
1472 sc->stsc_data[i].first = avio_rb32(pb);
1473 sc->stsc_data[i].count = avio_rb32(pb);
1474 sc->stsc_data[i].id = avio_rb32(pb);
1479 if (pb->eof_reached)
1485 static int mov_read_stps(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1488 MOVStreamContext *sc;
1489 unsigned i, entries;
1491 if (c->fc->nb_streams < 1)
1493 st = c->fc->streams[c->fc->nb_streams-1];
1496 avio_rb32(pb); // version + flags
1498 entries = avio_rb32(pb);
1499 if (entries >= UINT_MAX / sizeof(*sc->stps_data))
1500 return AVERROR_INVALIDDATA;
1501 sc->stps_data = av_malloc(entries * sizeof(*sc->stps_data));
1503 return AVERROR(ENOMEM);
1505 for (i = 0; i < entries && !pb->eof_reached; i++) {
1506 sc->stps_data[i] = avio_rb32(pb);
1507 //av_dlog(c->fc, "stps %d\n", sc->stps_data[i]);
1512 if (pb->eof_reached)
1518 static int mov_read_stss(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1521 MOVStreamContext *sc;
1522 unsigned int i, entries;
1524 if (c->fc->nb_streams < 1)
1526 st = c->fc->streams[c->fc->nb_streams-1];
1529 avio_r8(pb); /* version */
1530 avio_rb24(pb); /* flags */
1532 entries = avio_rb32(pb);
1534 av_dlog(c->fc, "keyframe_count = %d\n", entries);
1538 sc->keyframe_absent = 1;
1541 if (entries >= UINT_MAX / sizeof(int))
1542 return AVERROR_INVALIDDATA;
1543 sc->keyframes = av_malloc(entries * sizeof(int));
1545 return AVERROR(ENOMEM);
1547 for (i = 0; i < entries && !pb->eof_reached; i++) {
1548 sc->keyframes[i] = avio_rb32(pb);
1549 //av_dlog(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
1552 sc->keyframe_count = i;
1554 if (pb->eof_reached)
1560 static int mov_read_stsz(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1563 MOVStreamContext *sc;
1564 unsigned int i, entries, sample_size, field_size, num_bytes;
1568 if (c->fc->nb_streams < 1)
1570 st = c->fc->streams[c->fc->nb_streams-1];
1573 avio_r8(pb); /* version */
1574 avio_rb24(pb); /* flags */
1576 if (atom.type == MKTAG('s','t','s','z')) {
1577 sample_size = avio_rb32(pb);
1578 if (!sc->sample_size) /* do not overwrite value computed in stsd */
1579 sc->sample_size = sample_size;
1583 avio_rb24(pb); /* reserved */
1584 field_size = avio_r8(pb);
1586 entries = avio_rb32(pb);
1588 av_dlog(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, entries);
1590 sc->sample_count = entries;
1594 if (field_size != 4 && field_size != 8 && field_size != 16 && field_size != 32) {
1595 av_log(c->fc, AV_LOG_ERROR, "Invalid sample field size %d\n", field_size);
1596 return AVERROR_INVALIDDATA;
1601 if (entries >= UINT_MAX / sizeof(int) || entries >= (UINT_MAX - 4) / field_size)
1602 return AVERROR_INVALIDDATA;
1603 sc->sample_sizes = av_malloc(entries * sizeof(int));
1604 if (!sc->sample_sizes)
1605 return AVERROR(ENOMEM);
1607 num_bytes = (entries*field_size+4)>>3;
1609 buf = av_malloc(num_bytes+FF_INPUT_BUFFER_PADDING_SIZE);
1611 av_freep(&sc->sample_sizes);
1612 return AVERROR(ENOMEM);
1615 if (avio_read(pb, buf, num_bytes) < num_bytes) {
1616 av_freep(&sc->sample_sizes);
1618 return AVERROR_INVALIDDATA;
1621 init_get_bits(&gb, buf, 8*num_bytes);
1623 for (i = 0; i < entries && !pb->eof_reached; i++) {
1624 sc->sample_sizes[i] = get_bits_long(&gb, field_size);
1625 sc->data_size += sc->sample_sizes[i];
1628 sc->sample_count = i;
1630 if (pb->eof_reached)
1637 static int mov_read_stts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1640 MOVStreamContext *sc;
1641 unsigned int i, entries;
1643 int64_t total_sample_count=0;
1645 if (c->fc->nb_streams < 1)
1647 st = c->fc->streams[c->fc->nb_streams-1];
1650 avio_r8(pb); /* version */
1651 avio_rb24(pb); /* flags */
1652 entries = avio_rb32(pb);
1654 av_dlog(c->fc, "track[%i].stts.entries = %i\n",
1655 c->fc->nb_streams-1, entries);
1659 if (entries >= UINT_MAX / sizeof(*sc->stts_data))
1660 return AVERROR(EINVAL);
1662 sc->stts_data = av_malloc(entries * sizeof(*sc->stts_data));
1664 return AVERROR(ENOMEM);
1666 for (i = 0; i < entries && !pb->eof_reached; i++) {
1667 int sample_duration;
1670 sample_count=avio_rb32(pb);
1671 sample_duration = avio_rb32(pb);
1672 sc->stts_data[i].count= sample_count;
1673 sc->stts_data[i].duration= sample_duration;
1675 av_dlog(c->fc, "sample_count=%d, sample_duration=%d\n",
1676 sample_count, sample_duration);
1678 duration+=(int64_t)sample_duration*sample_count;
1679 total_sample_count+=sample_count;
1684 if (pb->eof_reached)
1687 st->nb_frames= total_sample_count;
1689 st->duration= duration;
1690 sc->track_end = duration;
1694 static int mov_read_ctts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1697 MOVStreamContext *sc;
1698 unsigned int i, entries;
1700 if (c->fc->nb_streams < 1)
1702 st = c->fc->streams[c->fc->nb_streams-1];
1705 avio_r8(pb); /* version */
1706 avio_rb24(pb); /* flags */
1707 entries = avio_rb32(pb);
1709 av_dlog(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
1713 if (entries >= UINT_MAX / sizeof(*sc->ctts_data))
1714 return AVERROR_INVALIDDATA;
1715 sc->ctts_data = av_malloc(entries * sizeof(*sc->ctts_data));
1717 return AVERROR(ENOMEM);
1719 for (i = 0; i < entries && !pb->eof_reached; i++) {
1720 int count =avio_rb32(pb);
1721 int duration =avio_rb32(pb);
1723 sc->ctts_data[i].count = count;
1724 sc->ctts_data[i].duration= duration;
1726 sc->dts_shift = FFMAX(sc->dts_shift, -duration);
1731 if (pb->eof_reached)
1734 av_dlog(c->fc, "dts shift %d\n", sc->dts_shift);
1739 static int mov_read_sbgp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1742 MOVStreamContext *sc;
1743 unsigned int i, entries;
1745 uint32_t grouping_type;
1747 if (c->fc->nb_streams < 1)
1749 st = c->fc->streams[c->fc->nb_streams-1];
1752 version = avio_r8(pb); /* version */
1753 avio_rb24(pb); /* flags */
1754 grouping_type = avio_rl32(pb);
1755 if (grouping_type != MKTAG( 'r','a','p',' '))
1756 return 0; /* only support 'rap ' grouping */
1758 avio_rb32(pb); /* grouping_type_parameter */
1760 entries = avio_rb32(pb);
1763 if (entries >= UINT_MAX / sizeof(*sc->rap_group))
1764 return AVERROR_INVALIDDATA;
1765 sc->rap_group = av_malloc(entries * sizeof(*sc->rap_group));
1767 return AVERROR(ENOMEM);
1769 for (i = 0; i < entries && !pb->eof_reached; i++) {
1770 sc->rap_group[i].count = avio_rb32(pb); /* sample_count */
1771 sc->rap_group[i].index = avio_rb32(pb); /* group_description_index */
1774 sc->rap_group_count = i;
1776 return pb->eof_reached ? AVERROR_EOF : 0;
1779 static void mov_build_index(MOVContext *mov, AVStream *st)
1781 MOVStreamContext *sc = st->priv_data;
1782 int64_t current_offset;
1783 int64_t current_dts = 0;
1784 unsigned int stts_index = 0;
1785 unsigned int stsc_index = 0;
1786 unsigned int stss_index = 0;
1787 unsigned int stps_index = 0;
1789 uint64_t stream_size = 0;
1792 /* adjust first dts according to edit list */
1793 if (sc->time_offset && mov->time_scale > 0) {
1794 if (sc->time_offset < 0)
1795 sc->time_offset = av_rescale(sc->time_offset, sc->time_scale, mov->time_scale);
1796 current_dts = -sc->time_offset;
1797 if (sc->ctts_data && sc->stts_data && sc->stts_data[0].duration &&
1798 sc->ctts_data[0].duration / sc->stts_data[0].duration > 16) {
1799 /* more than 16 frames delay, dts are likely wrong
1800 this happens with files created by iMovie */
1802 st->codec->has_b_frames = 1;
1806 /* only use old uncompressed audio chunk demuxing when stts specifies it */
1807 if (!(st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
1808 sc->stts_count == 1 && sc->stts_data[0].duration == 1)) {
1809 unsigned int current_sample = 0;
1810 unsigned int stts_sample = 0;
1811 unsigned int sample_size;
1812 unsigned int distance = 0;
1813 unsigned int rap_group_index = 0;
1814 unsigned int rap_group_sample = 0;
1815 int rap_group_present = sc->rap_group_count && sc->rap_group;
1816 int key_off = (sc->keyframes && sc->keyframes[0] > 0) || (sc->stps_data && sc->stps_data[0] > 0);
1818 current_dts -= sc->dts_shift;
1820 if (!sc->sample_count)
1822 if (sc->sample_count >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries)
1824 mem = av_realloc(st->index_entries, (st->nb_index_entries + sc->sample_count) * sizeof(*st->index_entries));
1827 st->index_entries = mem;
1828 st->index_entries_allocated_size = (st->nb_index_entries + sc->sample_count) * sizeof(*st->index_entries);
1830 for (i = 0; i < sc->chunk_count; i++) {
1831 current_offset = sc->chunk_offsets[i];
1832 while (stsc_index + 1 < sc->stsc_count &&
1833 i + 1 == sc->stsc_data[stsc_index + 1].first)
1835 for (j = 0; j < sc->stsc_data[stsc_index].count; j++) {
1837 if (current_sample >= sc->sample_count) {
1838 av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
1842 if (!sc->keyframe_absent && (!sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index])) {
1844 if (stss_index + 1 < sc->keyframe_count)
1846 } else if (sc->stps_count && current_sample+key_off == sc->stps_data[stps_index]) {
1848 if (stps_index + 1 < sc->stps_count)
1851 if (rap_group_present && rap_group_index < sc->rap_group_count) {
1852 if (sc->rap_group[rap_group_index].index > 0)
1854 if (++rap_group_sample == sc->rap_group[rap_group_index].count) {
1855 rap_group_sample = 0;
1861 sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
1862 if (sc->pseudo_stream_id == -1 ||
1863 sc->stsc_data[stsc_index].id - 1 == sc->pseudo_stream_id) {
1864 AVIndexEntry *e = &st->index_entries[st->nb_index_entries++];
1865 e->pos = current_offset;
1866 e->timestamp = current_dts;
1867 e->size = sample_size;
1868 e->min_distance = distance;
1869 e->flags = keyframe ? AVINDEX_KEYFRAME : 0;
1870 av_dlog(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
1871 "size %d, distance %d, keyframe %d\n", st->index, current_sample,
1872 current_offset, current_dts, sample_size, distance, keyframe);
1875 current_offset += sample_size;
1876 stream_size += sample_size;
1877 current_dts += sc->stts_data[stts_index].duration;
1881 if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
1887 if (st->duration > 0)
1888 st->codec->bit_rate = stream_size*8*sc->time_scale/st->duration;
1890 unsigned chunk_samples, total = 0;
1892 // compute total chunk count
1893 for (i = 0; i < sc->stsc_count; i++) {
1894 unsigned count, chunk_count;
1896 chunk_samples = sc->stsc_data[i].count;
1897 if (i != sc->stsc_count - 1 &&
1898 sc->samples_per_frame && chunk_samples % sc->samples_per_frame) {
1899 av_log(mov->fc, AV_LOG_ERROR, "error unaligned chunk\n");
1903 if (sc->samples_per_frame >= 160) { // gsm
1904 count = chunk_samples / sc->samples_per_frame;
1905 } else if (sc->samples_per_frame > 1) {
1906 unsigned samples = (1024/sc->samples_per_frame)*sc->samples_per_frame;
1907 count = (chunk_samples+samples-1) / samples;
1909 count = (chunk_samples+1023) / 1024;
1912 if (i < sc->stsc_count - 1)
1913 chunk_count = sc->stsc_data[i+1].first - sc->stsc_data[i].first;
1915 chunk_count = sc->chunk_count - (sc->stsc_data[i].first - 1);
1916 total += chunk_count * count;
1919 av_dlog(mov->fc, "chunk count %d\n", total);
1920 if (total >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries)
1922 mem = av_realloc(st->index_entries, (st->nb_index_entries + total) * sizeof(*st->index_entries));
1925 st->index_entries = mem;
1926 st->index_entries_allocated_size = (st->nb_index_entries + total) * sizeof(*st->index_entries);
1929 for (i = 0; i < sc->chunk_count; i++) {
1930 current_offset = sc->chunk_offsets[i];
1931 if (stsc_index + 1 < sc->stsc_count &&
1932 i + 1 == sc->stsc_data[stsc_index + 1].first)
1934 chunk_samples = sc->stsc_data[stsc_index].count;
1936 while (chunk_samples > 0) {
1938 unsigned size, samples;
1940 if (sc->samples_per_frame >= 160) { // gsm
1941 samples = sc->samples_per_frame;
1942 size = sc->bytes_per_frame;
1944 if (sc->samples_per_frame > 1) {
1945 samples = FFMIN((1024 / sc->samples_per_frame)*
1946 sc->samples_per_frame, chunk_samples);
1947 size = (samples / sc->samples_per_frame) * sc->bytes_per_frame;
1949 samples = FFMIN(1024, chunk_samples);
1950 size = samples * sc->sample_size;
1954 if (st->nb_index_entries >= total) {
1955 av_log(mov->fc, AV_LOG_ERROR, "wrong chunk count %d\n", total);
1958 e = &st->index_entries[st->nb_index_entries++];
1959 e->pos = current_offset;
1960 e->timestamp = current_dts;
1962 e->min_distance = 0;
1963 e->flags = AVINDEX_KEYFRAME;
1964 av_dlog(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", "
1965 "size %d, duration %d\n", st->index, i, current_offset, current_dts,
1968 current_offset += size;
1969 current_dts += samples;
1970 chunk_samples -= samples;
1976 static int mov_open_dref(AVIOContext **pb, char *src, MOVDref *ref,
1977 AVIOInterruptCB *int_cb)
1979 /* try relative path, we do not try the absolute because it can leak information about our
1980 system to an attacker */
1981 if (ref->nlvl_to > 0 && ref->nlvl_from > 0) {
1982 char filename[1024];
1986 /* find a source dir */
1987 src_path = strrchr(src, '/');
1993 /* find a next level down to target */
1994 for (i = 0, l = strlen(ref->path) - 1; l >= 0; l--)
1995 if (ref->path[l] == '/') {
1996 if (i == ref->nlvl_to - 1)
2002 /* compose filename if next level down to target was found */
2003 if (i == ref->nlvl_to - 1 && src_path - src < sizeof(filename)) {
2004 memcpy(filename, src, src_path - src);
2005 filename[src_path - src] = 0;
2007 for (i = 1; i < ref->nlvl_from; i++)
2008 av_strlcat(filename, "../", 1024);
2010 av_strlcat(filename, ref->path + l + 1, 1024);
2012 if (!avio_open2(pb, filename, AVIO_FLAG_READ, int_cb, NULL))
2017 return AVERROR(ENOENT);
2020 static int mov_read_trak(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2023 MOVStreamContext *sc;
2026 st = avformat_new_stream(c->fc, NULL);
2027 if (!st) return AVERROR(ENOMEM);
2028 st->id = c->fc->nb_streams;
2029 sc = av_mallocz(sizeof(MOVStreamContext));
2030 if (!sc) return AVERROR(ENOMEM);
2033 st->codec->codec_type = AVMEDIA_TYPE_DATA;
2034 sc->ffindex = st->index;
2036 if ((ret = mov_read_default(c, pb, atom)) < 0)
2040 if (sc->chunk_count && (!sc->stts_count || !sc->stsc_count ||
2041 (!sc->sample_size && !sc->sample_count))) {
2042 av_log(c->fc, AV_LOG_ERROR, "stream %d, missing mandatory atoms, broken header\n",
2047 if (sc->time_scale <= 0) {
2048 av_log(c->fc, AV_LOG_WARNING, "stream %d, timescale not set\n", st->index);
2049 sc->time_scale = c->time_scale;
2050 if (sc->time_scale <= 0)
2054 avpriv_set_pts_info(st, 64, 1, sc->time_scale);
2056 mov_build_index(c, st);
2058 if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) {
2059 MOVDref *dref = &sc->drefs[sc->dref_id - 1];
2060 if (mov_open_dref(&sc->pb, c->fc->filename, dref, &c->fc->interrupt_callback) < 0)
2061 av_log(c->fc, AV_LOG_ERROR,
2062 "stream %d, error opening alias: path='%s', dir='%s', "
2063 "filename='%s', volume='%s', nlvl_from=%d, nlvl_to=%d\n",
2064 st->index, dref->path, dref->dir, dref->filename,
2065 dref->volume, dref->nlvl_from, dref->nlvl_to);
2069 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2070 if (!st->sample_aspect_ratio.num &&
2071 (st->codec->width != sc->width || st->codec->height != sc->height)) {
2072 st->sample_aspect_ratio = av_d2q(((double)st->codec->height * sc->width) /
2073 ((double)st->codec->width * sc->height), INT_MAX);
2076 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
2077 sc->time_scale*st->nb_frames, st->duration, INT_MAX);
2079 #if FF_API_R_FRAME_RATE
2080 if (sc->stts_count == 1 || (sc->stts_count == 2 && sc->stts_data[1].count == 1))
2081 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den,
2082 sc->time_scale, sc->stts_data[0].duration, INT_MAX);
2086 switch (st->codec->codec_id) {
2087 #if CONFIG_H261_DECODER
2088 case AV_CODEC_ID_H261:
2090 #if CONFIG_H263_DECODER
2091 case AV_CODEC_ID_H263:
2093 #if CONFIG_MPEG4_DECODER
2094 case AV_CODEC_ID_MPEG4:
2096 st->codec->width = 0; /* let decoder init width/height */
2097 st->codec->height= 0;
2101 /* Do not need those anymore. */
2102 av_freep(&sc->chunk_offsets);
2103 av_freep(&sc->stsc_data);
2104 av_freep(&sc->sample_sizes);
2105 av_freep(&sc->keyframes);
2106 av_freep(&sc->stts_data);
2107 av_freep(&sc->stps_data);
2108 av_freep(&sc->rap_group);
2113 static int mov_read_ilst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2116 c->itunes_metadata = 1;
2117 ret = mov_read_default(c, pb, atom);
2118 c->itunes_metadata = 0;
2122 static int mov_read_meta(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2124 while (atom.size > 8) {
2125 uint32_t tag = avio_rl32(pb);
2127 if (tag == MKTAG('h','d','l','r')) {
2128 avio_seek(pb, -8, SEEK_CUR);
2130 return mov_read_default(c, pb, atom);
2136 static int mov_read_tkhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2141 int64_t disp_transform[2];
2142 int display_matrix[3][2];
2144 MOVStreamContext *sc;
2147 if (c->fc->nb_streams < 1)
2149 st = c->fc->streams[c->fc->nb_streams-1];
2152 version = avio_r8(pb);
2153 avio_rb24(pb); /* flags */
2155 MOV_TRACK_ENABLED 0x0001
2156 MOV_TRACK_IN_MOVIE 0x0002
2157 MOV_TRACK_IN_PREVIEW 0x0004
2158 MOV_TRACK_IN_POSTER 0x0008
2165 avio_rb32(pb); /* creation time */
2166 avio_rb32(pb); /* modification time */
2168 st->id = (int)avio_rb32(pb); /* track id (NOT 0 !)*/
2169 avio_rb32(pb); /* reserved */
2171 /* highlevel (considering edits) duration in movie timebase */
2172 (version == 1) ? avio_rb64(pb) : avio_rb32(pb);
2173 avio_rb32(pb); /* reserved */
2174 avio_rb32(pb); /* reserved */
2176 avio_rb16(pb); /* layer */
2177 avio_rb16(pb); /* alternate group */
2178 avio_rb16(pb); /* volume */
2179 avio_rb16(pb); /* reserved */
2181 //read in the display matrix (outlined in ISO 14496-12, Section 6.2.2)
2182 // they're kept in fixed point format through all calculations
2183 // ignore u,v,z b/c we don't need the scale factor to calc aspect ratio
2184 for (i = 0; i < 3; i++) {
2185 display_matrix[i][0] = avio_rb32(pb); // 16.16 fixed point
2186 display_matrix[i][1] = avio_rb32(pb); // 16.16 fixed point
2187 avio_rb32(pb); // 2.30 fixed point (not used)
2190 width = avio_rb32(pb); // 16.16 fixed point track width
2191 height = avio_rb32(pb); // 16.16 fixed point track height
2192 sc->width = width >> 16;
2193 sc->height = height >> 16;
2195 // transform the display width/height according to the matrix
2196 // skip this if the display matrix is the default identity matrix
2197 // or if it is rotating the picture, ex iPhone 3GS
2198 // to keep the same scale, use [width height 1<<16]
2199 if (width && height &&
2200 ((display_matrix[0][0] != 65536 ||
2201 display_matrix[1][1] != 65536) &&
2202 !display_matrix[0][1] &&
2203 !display_matrix[1][0] &&
2204 !display_matrix[2][0] && !display_matrix[2][1])) {
2205 for (i = 0; i < 2; i++)
2207 (int64_t) width * display_matrix[0][i] +
2208 (int64_t) height * display_matrix[1][i] +
2209 ((int64_t) display_matrix[2][i] << 16);
2211 //sample aspect ratio is new width/height divided by old width/height
2212 st->sample_aspect_ratio = av_d2q(
2213 ((double) disp_transform[0] * height) /
2214 ((double) disp_transform[1] * width), INT_MAX);
2219 static int mov_read_tfhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2221 MOVFragment *frag = &c->fragment;
2222 MOVTrackExt *trex = NULL;
2223 int flags, track_id, i;
2225 avio_r8(pb); /* version */
2226 flags = avio_rb24(pb);
2228 track_id = avio_rb32(pb);
2230 return AVERROR_INVALIDDATA;
2231 frag->track_id = track_id;
2232 for (i = 0; i < c->trex_count; i++)
2233 if (c->trex_data[i].track_id == frag->track_id) {
2234 trex = &c->trex_data[i];
2238 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding trex\n");
2239 return AVERROR_INVALIDDATA;
2242 frag->base_data_offset = flags & MOV_TFHD_BASE_DATA_OFFSET ?
2243 avio_rb64(pb) : frag->moof_offset;
2244 frag->stsd_id = flags & MOV_TFHD_STSD_ID ? avio_rb32(pb) : trex->stsd_id;
2246 frag->duration = flags & MOV_TFHD_DEFAULT_DURATION ?
2247 avio_rb32(pb) : trex->duration;
2248 frag->size = flags & MOV_TFHD_DEFAULT_SIZE ?
2249 avio_rb32(pb) : trex->size;
2250 frag->flags = flags & MOV_TFHD_DEFAULT_FLAGS ?
2251 avio_rb32(pb) : trex->flags;
2252 av_dlog(c->fc, "frag flags 0x%x\n", frag->flags);
2256 static int mov_read_chap(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2258 c->chapter_track = avio_rb32(pb);
2262 static int mov_read_trex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2266 if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data))
2267 return AVERROR_INVALIDDATA;
2268 trex = av_realloc(c->trex_data, (c->trex_count+1)*sizeof(*c->trex_data));
2270 return AVERROR(ENOMEM);
2271 c->trex_data = trex;
2272 trex = &c->trex_data[c->trex_count++];
2273 avio_r8(pb); /* version */
2274 avio_rb24(pb); /* flags */
2275 trex->track_id = avio_rb32(pb);
2276 trex->stsd_id = avio_rb32(pb);
2277 trex->duration = avio_rb32(pb);
2278 trex->size = avio_rb32(pb);
2279 trex->flags = avio_rb32(pb);
2283 static int mov_read_trun(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2285 MOVFragment *frag = &c->fragment;
2286 AVStream *st = NULL;
2287 MOVStreamContext *sc;
2291 int data_offset = 0;
2292 unsigned entries, first_sample_flags = frag->flags;
2293 int flags, distance, i, found_keyframe = 0;
2295 for (i = 0; i < c->fc->nb_streams; i++) {
2296 if (c->fc->streams[i]->id == frag->track_id) {
2297 st = c->fc->streams[i];
2302 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id);
2303 return AVERROR_INVALIDDATA;
2306 if (sc->pseudo_stream_id+1 != frag->stsd_id)
2308 avio_r8(pb); /* version */
2309 flags = avio_rb24(pb);
2310 entries = avio_rb32(pb);
2311 av_dlog(c->fc, "flags 0x%x entries %d\n", flags, entries);
2313 /* Always assume the presence of composition time offsets.
2314 * Without this assumption, for instance, we cannot deal with a track in fragmented movies that meet the following.
2315 * 1) in the initial movie, there are no samples.
2316 * 2) in the first movie fragment, there is only one sample without composition time offset.
2317 * 3) in the subsequent movie fragments, there are samples with composition time offset. */
2318 if (!sc->ctts_count && sc->sample_count)
2320 /* Complement ctts table if moov atom doesn't have ctts atom. */
2321 ctts_data = av_malloc(sizeof(*sc->ctts_data));
2323 return AVERROR(ENOMEM);
2324 sc->ctts_data = ctts_data;
2325 sc->ctts_data[sc->ctts_count].count = sc->sample_count;
2326 sc->ctts_data[sc->ctts_count].duration = 0;
2329 if ((uint64_t)entries+sc->ctts_count >= UINT_MAX/sizeof(*sc->ctts_data))
2330 return AVERROR_INVALIDDATA;
2331 ctts_data = av_realloc(sc->ctts_data,
2332 (entries+sc->ctts_count)*sizeof(*sc->ctts_data));
2334 return AVERROR(ENOMEM);
2335 sc->ctts_data = ctts_data;
2337 if (flags & MOV_TRUN_DATA_OFFSET) data_offset = avio_rb32(pb);
2338 if (flags & MOV_TRUN_FIRST_SAMPLE_FLAGS) first_sample_flags = avio_rb32(pb);
2339 dts = sc->track_end - sc->time_offset;
2340 offset = frag->base_data_offset + data_offset;
2342 av_dlog(c->fc, "first sample flags 0x%x\n", first_sample_flags);
2343 for (i = 0; i < entries && !pb->eof_reached; i++) {
2344 unsigned sample_size = frag->size;
2345 int sample_flags = i ? frag->flags : first_sample_flags;
2346 unsigned sample_duration = frag->duration;
2349 if (flags & MOV_TRUN_SAMPLE_DURATION) sample_duration = avio_rb32(pb);
2350 if (flags & MOV_TRUN_SAMPLE_SIZE) sample_size = avio_rb32(pb);
2351 if (flags & MOV_TRUN_SAMPLE_FLAGS) sample_flags = avio_rb32(pb);
2352 sc->ctts_data[sc->ctts_count].count = 1;
2353 sc->ctts_data[sc->ctts_count].duration = (flags & MOV_TRUN_SAMPLE_CTS) ?
2356 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
2358 else if (!found_keyframe)
2359 keyframe = found_keyframe =
2360 !(sample_flags & (MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC |
2361 MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES));
2364 av_add_index_entry(st, offset, dts, sample_size, distance,
2365 keyframe ? AVINDEX_KEYFRAME : 0);
2366 av_dlog(c->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
2367 "size %d, distance %d, keyframe %d\n", st->index, sc->sample_count+i,
2368 offset, dts, sample_size, distance, keyframe);
2370 dts += sample_duration;
2371 offset += sample_size;
2372 sc->data_size += sample_size;
2375 if (pb->eof_reached)
2378 frag->moof_offset = offset;
2379 st->duration = sc->track_end = dts + sc->time_offset;
2383 /* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
2384 /* like the files created with Adobe Premiere 5.0, for samples see */
2385 /* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
2386 static int mov_read_wide(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2391 return 0; /* continue */
2392 if (avio_rb32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
2393 avio_skip(pb, atom.size - 4);
2396 atom.type = avio_rl32(pb);
2398 if (atom.type != MKTAG('m','d','a','t')) {
2399 avio_skip(pb, atom.size);
2402 err = mov_read_mdat(c, pb, atom);
2406 static int mov_read_cmov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2411 uint8_t *moov_data; /* uncompressed data */
2412 long cmov_len, moov_len;
2415 avio_rb32(pb); /* dcom atom */
2416 if (avio_rl32(pb) != MKTAG('d','c','o','m'))
2417 return AVERROR_INVALIDDATA;
2418 if (avio_rl32(pb) != MKTAG('z','l','i','b')) {
2419 av_log(c->fc, AV_LOG_ERROR, "unknown compression for cmov atom !");
2420 return AVERROR_INVALIDDATA;
2422 avio_rb32(pb); /* cmvd atom */
2423 if (avio_rl32(pb) != MKTAG('c','m','v','d'))
2424 return AVERROR_INVALIDDATA;
2425 moov_len = avio_rb32(pb); /* uncompressed size */
2426 cmov_len = atom.size - 6 * 4;
2428 cmov_data = av_malloc(cmov_len);
2430 return AVERROR(ENOMEM);
2431 moov_data = av_malloc(moov_len);
2434 return AVERROR(ENOMEM);
2436 avio_read(pb, cmov_data, cmov_len);
2437 if (uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
2438 goto free_and_return;
2439 if (ffio_init_context(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
2440 goto free_and_return;
2441 atom.type = MKTAG('m','o','o','v');
2442 atom.size = moov_len;
2443 ret = mov_read_default(c, &ctx, atom);
2449 av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
2450 return AVERROR(ENOSYS);
2454 /* edit list atom */
2455 static int mov_read_elst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2457 MOVStreamContext *sc;
2458 int i, edit_count, version;
2460 if (c->fc->nb_streams < 1)
2462 sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
2464 version = avio_r8(pb); /* version */
2465 avio_rb24(pb); /* flags */
2466 edit_count = avio_rb32(pb); /* entries */
2468 if ((uint64_t)edit_count*12+8 > atom.size)
2469 return AVERROR_INVALIDDATA;
2471 for (i=0; i<edit_count; i++){
2475 duration = avio_rb64(pb);
2476 time = avio_rb64(pb);
2478 duration = avio_rb32(pb); /* segment duration */
2479 time = (int32_t)avio_rb32(pb); /* media time */
2481 avio_rb32(pb); /* Media rate */
2482 if (i == 0 && time >= -1) {
2483 sc->time_offset = time != -1 ? time : -duration;
2488 av_log(c->fc, AV_LOG_WARNING, "multiple edit list entries, "
2489 "a/v desync might occur, patch welcome\n");
2491 av_dlog(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, edit_count);
2495 static const MOVParseTableEntry mov_default_parse_table[] = {
2496 { MKTAG('a','v','s','s'), mov_read_extradata },
2497 { MKTAG('c','h','p','l'), mov_read_chpl },
2498 { MKTAG('c','o','6','4'), mov_read_stco },
2499 { MKTAG('c','t','t','s'), mov_read_ctts }, /* composition time to sample */
2500 { MKTAG('d','i','n','f'), mov_read_default },
2501 { MKTAG('d','r','e','f'), mov_read_dref },
2502 { MKTAG('e','d','t','s'), mov_read_default },
2503 { MKTAG('e','l','s','t'), mov_read_elst },
2504 { MKTAG('e','n','d','a'), mov_read_enda },
2505 { MKTAG('f','i','e','l'), mov_read_fiel },
2506 { MKTAG('f','t','y','p'), mov_read_ftyp },
2507 { MKTAG('g','l','b','l'), mov_read_glbl },
2508 { MKTAG('h','d','l','r'), mov_read_hdlr },
2509 { MKTAG('i','l','s','t'), mov_read_ilst },
2510 { MKTAG('j','p','2','h'), mov_read_extradata },
2511 { MKTAG('m','d','a','t'), mov_read_mdat },
2512 { MKTAG('m','d','h','d'), mov_read_mdhd },
2513 { MKTAG('m','d','i','a'), mov_read_default },
2514 { MKTAG('m','e','t','a'), mov_read_meta },
2515 { MKTAG('m','i','n','f'), mov_read_default },
2516 { MKTAG('m','o','o','f'), mov_read_moof },
2517 { MKTAG('m','o','o','v'), mov_read_moov },
2518 { MKTAG('m','v','e','x'), mov_read_default },
2519 { MKTAG('m','v','h','d'), mov_read_mvhd },
2520 { MKTAG('S','M','I',' '), mov_read_smi }, /* Sorenson extension ??? */
2521 { MKTAG('a','l','a','c'), mov_read_extradata }, /* alac specific atom */
2522 { MKTAG('a','v','c','C'), mov_read_glbl },
2523 { MKTAG('p','a','s','p'), mov_read_pasp },
2524 { MKTAG('s','t','b','l'), mov_read_default },
2525 { MKTAG('s','t','c','o'), mov_read_stco },
2526 { MKTAG('s','t','p','s'), mov_read_stps },
2527 { MKTAG('s','t','r','f'), mov_read_strf },
2528 { MKTAG('s','t','s','c'), mov_read_stsc },
2529 { MKTAG('s','t','s','d'), mov_read_stsd }, /* sample description */
2530 { MKTAG('s','t','s','s'), mov_read_stss }, /* sync sample */
2531 { MKTAG('s','t','s','z'), mov_read_stsz }, /* sample size */
2532 { MKTAG('s','t','t','s'), mov_read_stts },
2533 { MKTAG('s','t','z','2'), mov_read_stsz }, /* compact sample size */
2534 { MKTAG('t','k','h','d'), mov_read_tkhd }, /* track header */
2535 { MKTAG('t','f','h','d'), mov_read_tfhd }, /* track fragment header */
2536 { MKTAG('t','r','a','k'), mov_read_trak },
2537 { MKTAG('t','r','a','f'), mov_read_default },
2538 { MKTAG('t','r','e','f'), mov_read_default },
2539 { MKTAG('c','h','a','p'), mov_read_chap },
2540 { MKTAG('t','r','e','x'), mov_read_trex },
2541 { MKTAG('t','r','u','n'), mov_read_trun },
2542 { MKTAG('u','d','t','a'), mov_read_default },
2543 { MKTAG('w','a','v','e'), mov_read_wave },
2544 { MKTAG('e','s','d','s'), mov_read_esds },
2545 { MKTAG('d','a','c','3'), mov_read_dac3 }, /* AC-3 info */
2546 { MKTAG('d','e','c','3'), mov_read_dec3 }, /* EAC-3 info */
2547 { MKTAG('w','i','d','e'), mov_read_wide }, /* place holder */
2548 { MKTAG('w','f','e','x'), mov_read_wfex },
2549 { MKTAG('c','m','o','v'), mov_read_cmov },
2550 { MKTAG('c','h','a','n'), mov_read_chan }, /* channel layout */
2551 { MKTAG('d','v','c','1'), mov_read_dvc1 },
2552 { MKTAG('s','b','g','p'), mov_read_sbgp },
2556 static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2558 int64_t total_size = 0;
2563 atom.size = INT64_MAX;
2564 while (total_size + 8 < atom.size && !pb->eof_reached) {
2565 int (*parse)(MOVContext*, AVIOContext*, MOVAtom) = NULL;
2568 if (atom.size >= 8) {
2569 a.size = avio_rb32(pb);
2570 a.type = avio_rl32(pb);
2572 av_dlog(c->fc, "type: %08x '%.4s' parent:'%.4s' sz: %"PRId64" %"PRId64" %"PRId64"\n",
2573 a.type, (char*)&a.type, (char*)&atom.type, a.size, total_size, atom.size);
2575 if (a.size == 1) { /* 64 bit extended size */
2576 a.size = avio_rb64(pb) - 8;
2580 a.size = atom.size - total_size;
2587 a.size = FFMIN(a.size, atom.size - total_size);
2589 for (i = 0; mov_default_parse_table[i].type; i++)
2590 if (mov_default_parse_table[i].type == a.type) {
2591 parse = mov_default_parse_table[i].parse;
2595 // container is user data
2596 if (!parse && (atom.type == MKTAG('u','d','t','a') ||
2597 atom.type == MKTAG('i','l','s','t')))
2598 parse = mov_read_udta_string;
2600 if (!parse) { /* skip leaf atoms data */
2601 avio_skip(pb, a.size);
2603 int64_t start_pos = avio_tell(pb);
2605 int err = parse(c, pb, a);
2608 if (c->found_moov && c->found_mdat &&
2609 ((!pb->seekable || c->fc->flags & AVFMT_FLAG_IGNIDX) ||
2610 start_pos + a.size == avio_size(pb))) {
2611 if (!pb->seekable || c->fc->flags & AVFMT_FLAG_IGNIDX)
2612 c->next_root_atom = start_pos + a.size;
2615 left = a.size - avio_tell(pb) + start_pos;
2616 if (left > 0) /* skip garbage at atom end */
2617 avio_skip(pb, left);
2620 total_size += a.size;
2623 if (total_size < atom.size && atom.size < 0x7ffff)
2624 avio_skip(pb, atom.size - total_size);
2629 static int mov_probe(AVProbeData *p)
2631 unsigned int offset;
2635 /* check file header */
2638 /* ignore invalid offset */
2639 if ((offset + 8) > (unsigned int)p->buf_size)
2641 tag = AV_RL32(p->buf + offset + 4);
2643 /* check for obvious tags */
2644 case MKTAG('j','P',' ',' '): /* jpeg 2000 signature */
2645 case MKTAG('m','o','o','v'):
2646 case MKTAG('m','d','a','t'):
2647 case MKTAG('p','n','o','t'): /* detect movs with preview pics like ew.mov and april.mov */
2648 case MKTAG('u','d','t','a'): /* Packet Video PVAuthor adds this and a lot of more junk */
2649 case MKTAG('f','t','y','p'):
2650 return AVPROBE_SCORE_MAX;
2651 /* those are more common words, so rate then a bit less */
2652 case MKTAG('e','d','i','w'): /* xdcam files have reverted first tags */
2653 case MKTAG('w','i','d','e'):
2654 case MKTAG('f','r','e','e'):
2655 case MKTAG('j','u','n','k'):
2656 case MKTAG('p','i','c','t'):
2657 return AVPROBE_SCORE_MAX - 5;
2658 case MKTAG(0x82,0x82,0x7f,0x7d):
2659 case MKTAG('s','k','i','p'):
2660 case MKTAG('u','u','i','d'):
2661 case MKTAG('p','r','f','l'):
2662 offset = AV_RB32(p->buf+offset) + offset;
2663 /* if we only find those cause probedata is too small at least rate them */
2664 score = AVPROBE_SCORE_MAX - 50;
2667 /* unrecognized tag */
2673 // must be done after parsing all trak because there's no order requirement
2674 static void mov_read_chapters(AVFormatContext *s)
2676 MOVContext *mov = s->priv_data;
2677 AVStream *st = NULL;
2678 MOVStreamContext *sc;
2682 for (i = 0; i < s->nb_streams; i++)
2683 if (s->streams[i]->id == mov->chapter_track) {
2688 av_log(s, AV_LOG_ERROR, "Referenced QT chapter track not found\n");
2692 st->discard = AVDISCARD_ALL;
2694 cur_pos = avio_tell(sc->pb);
2696 for (i = 0; i < st->nb_index_entries; i++) {
2697 AVIndexEntry *sample = &st->index_entries[i];
2698 int64_t end = i+1 < st->nb_index_entries ? st->index_entries[i+1].timestamp : st->duration;
2703 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
2704 av_log(s, AV_LOG_ERROR, "Chapter %d not found in file\n", i);
2708 // the first two bytes are the length of the title
2709 len = avio_rb16(sc->pb);
2710 if (len > sample->size-2)
2712 title_len = 2*len + 1;
2713 if (!(title = av_mallocz(title_len)))
2716 // The samples could theoretically be in any encoding if there's an encd
2717 // atom following, but in practice are only utf-8 or utf-16, distinguished
2718 // instead by the presence of a BOM
2722 ch = avio_rb16(sc->pb);
2724 avio_get_str16be(sc->pb, len, title, title_len);
2725 else if (ch == 0xfffe)
2726 avio_get_str16le(sc->pb, len, title, title_len);
2729 if (len == 1 || len == 2)
2732 avio_get_str(sc->pb, len - 2, title + 2, title_len - 2);
2736 avpriv_new_chapter(s, i, st->time_base, sample->timestamp, end, title);
2740 avio_seek(sc->pb, cur_pos, SEEK_SET);
2743 static int mov_read_close(AVFormatContext *s)
2745 MOVContext *mov = s->priv_data;
2748 for (i = 0; i < s->nb_streams; i++) {
2749 AVStream *st = s->streams[i];
2750 MOVStreamContext *sc = st->priv_data;
2752 av_freep(&sc->ctts_data);
2753 for (j = 0; j < sc->drefs_count; j++) {
2754 av_freep(&sc->drefs[j].path);
2755 av_freep(&sc->drefs[j].dir);
2757 av_freep(&sc->drefs);
2758 if (sc->pb && sc->pb != s->pb)
2762 if (mov->dv_demux) {
2763 for (i = 0; i < mov->dv_fctx->nb_streams; i++) {
2764 av_freep(&mov->dv_fctx->streams[i]->codec);
2765 av_freep(&mov->dv_fctx->streams[i]);
2767 av_freep(&mov->dv_fctx);
2768 av_freep(&mov->dv_demux);
2771 av_freep(&mov->trex_data);
2776 static int mov_read_header(AVFormatContext *s)
2778 MOVContext *mov = s->priv_data;
2779 AVIOContext *pb = s->pb;
2781 MOVAtom atom = { AV_RL32("root") };
2784 /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
2786 atom.size = avio_size(pb);
2788 atom.size = INT64_MAX;
2790 /* check MOV header */
2791 if ((err = mov_read_default(mov, pb, atom)) < 0) {
2792 av_log(s, AV_LOG_ERROR, "error reading header: %d\n", err);
2796 if (!mov->found_moov) {
2797 av_log(s, AV_LOG_ERROR, "moov atom not found\n");
2799 return AVERROR_INVALIDDATA;
2801 av_dlog(mov->fc, "on_parse_exit_offset=%"PRId64"\n", avio_tell(pb));
2803 if (pb->seekable && mov->chapter_track > 0)
2804 mov_read_chapters(s);
2806 if (mov->trex_data) {
2808 for (i = 0; i < s->nb_streams; i++) {
2809 AVStream *st = s->streams[i];
2810 MOVStreamContext *sc = st->priv_data;
2812 st->codec->bit_rate = sc->data_size * 8 * sc->time_scale / st->duration;
2819 static AVIndexEntry *mov_find_next_sample(AVFormatContext *s, AVStream **st)
2821 AVIndexEntry *sample = NULL;
2822 int64_t best_dts = INT64_MAX;
2824 for (i = 0; i < s->nb_streams; i++) {
2825 AVStream *avst = s->streams[i];
2826 MOVStreamContext *msc = avst->priv_data;
2827 if (msc->pb && msc->current_sample < avst->nb_index_entries) {
2828 AVIndexEntry *current_sample = &avst->index_entries[msc->current_sample];
2829 int64_t dts = av_rescale(current_sample->timestamp, AV_TIME_BASE, msc->time_scale);
2830 av_dlog(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
2831 if (!sample || (!s->pb->seekable && current_sample->pos < sample->pos) ||
2833 ((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb &&
2834 ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
2835 (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) {
2836 sample = current_sample;
2845 static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
2847 MOVContext *mov = s->priv_data;
2848 MOVStreamContext *sc;
2849 AVIndexEntry *sample;
2850 AVStream *st = NULL;
2853 sample = mov_find_next_sample(s, &st);
2855 mov->found_mdat = 0;
2856 if (!mov->next_root_atom)
2858 avio_seek(s->pb, mov->next_root_atom, SEEK_SET);
2859 mov->next_root_atom = 0;
2860 if (mov_read_default(mov, s->pb, (MOVAtom){ AV_RL32("root"), INT64_MAX }) < 0 ||
2863 av_dlog(s, "read fragments, offset 0x%"PRIx64"\n", avio_tell(s->pb));
2867 /* must be done just before reading, to avoid infinite loop on sample */
2868 sc->current_sample++;
2870 if (st->discard != AVDISCARD_ALL) {
2871 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
2872 av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
2873 sc->ffindex, sample->pos);
2874 return AVERROR_INVALIDDATA;
2876 ret = av_get_packet(sc->pb, pkt, sample->size);
2879 if (sc->has_palette) {
2882 pal = av_packet_new_side_data(pkt, AV_PKT_DATA_PALETTE, AVPALETTE_SIZE);
2884 av_log(mov->fc, AV_LOG_ERROR, "Cannot append palette to packet\n");
2886 memcpy(pal, sc->palette, AVPALETTE_SIZE);
2887 sc->has_palette = 0;
2890 #if CONFIG_DV_DEMUXER
2891 if (mov->dv_demux && sc->dv_audio_container) {
2892 avpriv_dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size);
2895 ret = avpriv_dv_get_packet(mov->dv_demux, pkt);
2902 pkt->stream_index = sc->ffindex;
2903 pkt->dts = sample->timestamp;
2904 if (sc->ctts_data && sc->ctts_index < sc->ctts_count) {
2905 pkt->pts = pkt->dts + sc->dts_shift + sc->ctts_data[sc->ctts_index].duration;
2906 /* update ctts context */
2908 if (sc->ctts_index < sc->ctts_count &&
2909 sc->ctts_data[sc->ctts_index].count == sc->ctts_sample) {
2911 sc->ctts_sample = 0;
2914 pkt->dts = AV_NOPTS_VALUE;
2916 int64_t next_dts = (sc->current_sample < st->nb_index_entries) ?
2917 st->index_entries[sc->current_sample].timestamp : st->duration;
2918 pkt->duration = next_dts - pkt->dts;
2919 pkt->pts = pkt->dts;
2921 if (st->discard == AVDISCARD_ALL)
2923 pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? AV_PKT_FLAG_KEY : 0;
2924 pkt->pos = sample->pos;
2925 av_dlog(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n",
2926 pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
2930 static int mov_seek_stream(AVFormatContext *s, AVStream *st, int64_t timestamp, int flags)
2932 MOVStreamContext *sc = st->priv_data;
2933 int sample, time_sample;
2936 sample = av_index_search_timestamp(st, timestamp, flags);
2937 av_dlog(s, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
2938 if (sample < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
2940 if (sample < 0) /* not sure what to do */
2941 return AVERROR_INVALIDDATA;
2942 sc->current_sample = sample;
2943 av_dlog(s, "stream %d, found sample %d\n", st->index, sc->current_sample);
2944 /* adjust ctts index */
2945 if (sc->ctts_data) {
2947 for (i = 0; i < sc->ctts_count; i++) {
2948 int next = time_sample + sc->ctts_data[i].count;
2949 if (next > sc->current_sample) {
2951 sc->ctts_sample = sc->current_sample - time_sample;
2960 static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
2963 int64_t seek_timestamp, timestamp;
2967 if (stream_index >= s->nb_streams)
2968 return AVERROR_INVALIDDATA;
2969 if (sample_time < 0)
2972 st = s->streams[stream_index];
2973 sample = mov_seek_stream(s, st, sample_time, flags);
2977 /* adjust seek timestamp to found sample timestamp */
2978 seek_timestamp = st->index_entries[sample].timestamp;
2980 for (i = 0; i < s->nb_streams; i++) {
2982 if (stream_index == i)
2985 timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
2986 mov_seek_stream(s, st, timestamp, flags);
2991 AVInputFormat ff_mov_demuxer = {
2992 .name = "mov,mp4,m4a,3gp,3g2,mj2",
2993 .long_name = NULL_IF_CONFIG_SMALL("QuickTime / MOV"),
2994 .priv_data_size = sizeof(MOVContext),
2995 .read_probe = mov_probe,
2996 .read_header = mov_read_header,
2997 .read_packet = mov_read_packet,
2998 .read_close = mov_read_close,
2999 .read_seek = mov_read_seek,