3 * Copyright (c) 2001 Fabrice Bellard
4 * Copyright (c) 2009 Baptiste Coudurier <baptiste dot coudurier at gmail dot com>
6 * first version by Francois Revol <revol@free.fr>
7 * seek function by Gael Chardon <gael.dev@4now.net>
9 * This file is part of Libav.
11 * Libav is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU Lesser General Public
13 * License as published by the Free Software Foundation; either
14 * version 2.1 of the License, or (at your option) any later version.
16 * Libav is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * Lesser General Public License for more details.
21 * You should have received a copy of the GNU Lesser General Public
22 * License along with Libav; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
29 //#define MOV_EXPORT_ALL_METADATA
31 #include "libavutil/attributes.h"
32 #include "libavutil/channel_layout.h"
33 #include "libavutil/intreadwrite.h"
34 #include "libavutil/intfloat.h"
35 #include "libavutil/mathematics.h"
36 #include "libavutil/avstring.h"
37 #include "libavutil/dict.h"
38 #include "libavcodec/ac3tab.h"
41 #include "avio_internal.h"
44 #include "libavcodec/get_bits.h"
52 #include "qtpalette.h"
58 /* those functions parse an atom */
59 /* links atom IDs to parse functions */
60 typedef struct MOVParseTableEntry {
62 int (*parse)(MOVContext *ctx, AVIOContext *pb, MOVAtom atom);
65 static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom);
67 static int mov_metadata_track_or_disc_number(MOVContext *c, AVIOContext *pb,
68 unsigned len, const char *key)
72 short current, total = 0;
73 avio_rb16(pb); // unknown
74 current = avio_rb16(pb);
76 total = avio_rb16(pb);
78 snprintf(buf, sizeof(buf), "%d", current);
80 snprintf(buf, sizeof(buf), "%d/%d", current, total);
81 av_dict_set(&c->fc->metadata, key, buf, 0);
86 static int mov_metadata_int8_bypass_padding(MOVContext *c, AVIOContext *pb,
87 unsigned len, const char *key)
91 /* bypass padding bytes */
96 snprintf(buf, sizeof(buf), "%d", avio_r8(pb));
97 av_dict_set(&c->fc->metadata, key, buf, 0);
102 static int mov_metadata_int8_no_padding(MOVContext *c, AVIOContext *pb,
103 unsigned len, const char *key)
107 snprintf(buf, sizeof(buf), "%d", avio_r8(pb));
108 av_dict_set(&c->fc->metadata, key, buf, 0);
113 static int mov_metadata_gnre(MOVContext *c, AVIOContext *pb,
114 unsigned len, const char *key)
119 avio_r8(pb); // unknown
122 if (genre < 1 || genre > ID3v1_GENRE_MAX)
124 snprintf(buf, sizeof(buf), "%s", ff_id3v1_genre_str[genre-1]);
125 av_dict_set(&c->fc->metadata, key, buf, 0);
130 static const uint32_t mac_to_unicode[128] = {
131 0x00C4,0x00C5,0x00C7,0x00C9,0x00D1,0x00D6,0x00DC,0x00E1,
132 0x00E0,0x00E2,0x00E4,0x00E3,0x00E5,0x00E7,0x00E9,0x00E8,
133 0x00EA,0x00EB,0x00ED,0x00EC,0x00EE,0x00EF,0x00F1,0x00F3,
134 0x00F2,0x00F4,0x00F6,0x00F5,0x00FA,0x00F9,0x00FB,0x00FC,
135 0x2020,0x00B0,0x00A2,0x00A3,0x00A7,0x2022,0x00B6,0x00DF,
136 0x00AE,0x00A9,0x2122,0x00B4,0x00A8,0x2260,0x00C6,0x00D8,
137 0x221E,0x00B1,0x2264,0x2265,0x00A5,0x00B5,0x2202,0x2211,
138 0x220F,0x03C0,0x222B,0x00AA,0x00BA,0x03A9,0x00E6,0x00F8,
139 0x00BF,0x00A1,0x00AC,0x221A,0x0192,0x2248,0x2206,0x00AB,
140 0x00BB,0x2026,0x00A0,0x00C0,0x00C3,0x00D5,0x0152,0x0153,
141 0x2013,0x2014,0x201C,0x201D,0x2018,0x2019,0x00F7,0x25CA,
142 0x00FF,0x0178,0x2044,0x20AC,0x2039,0x203A,0xFB01,0xFB02,
143 0x2021,0x00B7,0x201A,0x201E,0x2030,0x00C2,0x00CA,0x00C1,
144 0x00CB,0x00C8,0x00CD,0x00CE,0x00CF,0x00CC,0x00D3,0x00D4,
145 0xF8FF,0x00D2,0x00DA,0x00DB,0x00D9,0x0131,0x02C6,0x02DC,
146 0x00AF,0x02D8,0x02D9,0x02DA,0x00B8,0x02DD,0x02DB,0x02C7,
149 static int mov_read_mac_string(MOVContext *c, AVIOContext *pb, int len,
150 char *dst, int dstlen)
153 char *end = dst+dstlen-1;
156 for (i = 0; i < len; i++) {
157 uint8_t t, c = avio_r8(pb);
158 if (c < 0x80 && p < end)
161 PUT_UTF8(mac_to_unicode[c-0x80], t, if (p < end) *p++ = t;);
167 static int mov_read_covr(MOVContext *c, AVIOContext *pb, int type, int len)
171 MOVStreamContext *sc;
176 case 0xd: id = AV_CODEC_ID_MJPEG; break;
177 case 0xe: id = AV_CODEC_ID_PNG; break;
178 case 0x1b: id = AV_CODEC_ID_BMP; break;
180 av_log(c->fc, AV_LOG_WARNING, "Unknown cover type: 0x%x.\n", type);
185 st = avformat_new_stream(c->fc, NULL);
187 return AVERROR(ENOMEM);
188 sc = av_mallocz(sizeof(*sc));
190 return AVERROR(ENOMEM);
193 ret = av_get_packet(pb, &pkt, len);
197 st->disposition |= AV_DISPOSITION_ATTACHED_PIC;
199 st->attached_pic = pkt;
200 st->attached_pic.stream_index = st->index;
201 st->attached_pic.flags |= AV_PKT_FLAG_KEY;
203 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
204 st->codec->codec_id = id;
209 static int mov_read_udta_string(MOVContext *c, AVIOContext *pb, MOVAtom atom)
211 #ifdef MOV_EXPORT_ALL_METADATA
214 char str[1024], key2[16], language[4] = {0};
215 const char *key = NULL;
216 uint16_t langcode = 0;
217 uint32_t data_type = 0, str_size;
218 int (*parse)(MOVContext*, AVIOContext*, unsigned, const char*) = NULL;
221 case MKTAG(0xa9,'n','a','m'): key = "title"; break;
222 case MKTAG(0xa9,'a','u','t'):
223 case MKTAG(0xa9,'A','R','T'): key = "artist"; break;
224 case MKTAG( 'a','A','R','T'): key = "album_artist"; break;
225 case MKTAG(0xa9,'w','r','t'): key = "composer"; break;
226 case MKTAG( 'c','p','r','t'):
227 case MKTAG(0xa9,'c','p','y'): key = "copyright"; break;
228 case MKTAG(0xa9,'c','m','t'):
229 case MKTAG(0xa9,'i','n','f'): key = "comment"; break;
230 case MKTAG(0xa9,'a','l','b'): key = "album"; break;
231 case MKTAG(0xa9,'d','a','y'): key = "date"; break;
232 case MKTAG(0xa9,'g','e','n'): key = "genre"; break;
233 case MKTAG( 'g','n','r','e'): key = "genre";
234 parse = mov_metadata_gnre; break;
235 case MKTAG(0xa9,'t','o','o'):
236 case MKTAG(0xa9,'s','w','r'): key = "encoder"; break;
237 case MKTAG(0xa9,'e','n','c'): key = "encoder"; break;
238 case MKTAG( 'd','e','s','c'): key = "description";break;
239 case MKTAG( 'l','d','e','s'): key = "synopsis"; break;
240 case MKTAG( 't','v','s','h'): key = "show"; break;
241 case MKTAG( 't','v','e','n'): key = "episode_id";break;
242 case MKTAG( 't','v','n','n'): key = "network"; break;
243 case MKTAG( 't','r','k','n'): key = "track";
244 parse = mov_metadata_track_or_disc_number; break;
245 case MKTAG( 'd','i','s','k'): key = "disc";
246 parse = mov_metadata_track_or_disc_number; break;
247 case MKTAG( 't','v','e','s'): key = "episode_sort";
248 parse = mov_metadata_int8_bypass_padding; break;
249 case MKTAG( 't','v','s','n'): key = "season_number";
250 parse = mov_metadata_int8_bypass_padding; break;
251 case MKTAG( 's','t','i','k'): key = "media_type";
252 parse = mov_metadata_int8_no_padding; break;
253 case MKTAG( 'h','d','v','d'): key = "hd_video";
254 parse = mov_metadata_int8_no_padding; break;
255 case MKTAG( 'p','g','a','p'): key = "gapless_playback";
256 parse = mov_metadata_int8_no_padding; break;
259 if (c->itunes_metadata && atom.size > 8) {
260 int data_size = avio_rb32(pb);
261 int tag = avio_rl32(pb);
262 if (tag == MKTAG('d','a','t','a')) {
263 data_type = avio_rb32(pb); // type
264 avio_rb32(pb); // unknown
265 str_size = data_size - 16;
268 if (atom.type == MKTAG('c', 'o', 'v', 'r')) {
269 int ret = mov_read_covr(c, pb, data_type, str_size);
271 av_log(c->fc, AV_LOG_ERROR, "Error parsing cover art.\n");
276 } else if (atom.size > 4 && key && !c->itunes_metadata) {
277 str_size = avio_rb16(pb); // string length
278 langcode = avio_rb16(pb);
279 ff_mov_lang_to_iso639(langcode, language);
282 str_size = atom.size;
284 #ifdef MOV_EXPORT_ALL_METADATA
286 snprintf(tmp_key, 5, "%.4s", (char*)&atom.type);
294 return AVERROR_INVALIDDATA;
296 str_size = FFMIN3(sizeof(str)-1, str_size, atom.size);
299 parse(c, pb, str_size, key);
301 if (data_type == 3 || (data_type == 0 && langcode < 0x800)) { // MAC Encoded
302 mov_read_mac_string(c, pb, str_size, str, sizeof(str));
304 avio_read(pb, str, str_size);
307 av_dict_set(&c->fc->metadata, key, str, 0);
308 if (*language && strcmp(language, "und")) {
309 snprintf(key2, sizeof(key2), "%s-%s", key, language);
310 av_dict_set(&c->fc->metadata, key2, str, 0);
313 av_dlog(c->fc, "lang \"%3s\" ", language);
314 av_dlog(c->fc, "tag \"%s\" value \"%s\" atom \"%.4s\" %d %"PRId64"\n",
315 key, str, (char*)&atom.type, str_size, atom.size);
320 static int mov_read_chpl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
323 int i, nb_chapters, str_len, version;
326 if ((atom.size -= 5) < 0)
329 version = avio_r8(pb);
332 avio_rb32(pb); // ???
333 nb_chapters = avio_r8(pb);
335 for (i = 0; i < nb_chapters; i++) {
339 start = avio_rb64(pb);
340 str_len = avio_r8(pb);
342 if ((atom.size -= 9+str_len) < 0)
345 avio_read(pb, str, str_len);
347 avpriv_new_chapter(c->fc, i, (AVRational){1,10000000}, start, AV_NOPTS_VALUE, str);
352 #define MIN_DATA_ENTRY_BOX_SIZE 12
353 static int mov_read_dref(MOVContext *c, AVIOContext *pb, MOVAtom atom)
356 MOVStreamContext *sc;
359 if (c->fc->nb_streams < 1)
361 st = c->fc->streams[c->fc->nb_streams-1];
364 avio_rb32(pb); // version + flags
365 entries = avio_rb32(pb);
366 if (entries > (atom.size - 1) / MIN_DATA_ENTRY_BOX_SIZE + 1 ||
367 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 if (sc->time_scale) {
718 av_log(c->fc, AV_LOG_ERROR, "Multiple mdhd?\n");
719 return AVERROR_INVALIDDATA;
722 version = avio_r8(pb);
724 avpriv_request_sample(c->fc, "Version %d", version);
725 return AVERROR_PATCHWELCOME;
727 avio_rb24(pb); /* flags */
729 creation_time = avio_rb64(pb);
732 creation_time = avio_rb32(pb);
733 avio_rb32(pb); /* modification time */
735 mov_metadata_creation_time(&st->metadata, creation_time);
737 sc->time_scale = avio_rb32(pb);
738 st->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
740 lang = avio_rb16(pb); /* language */
741 if (ff_mov_lang_to_iso639(lang, language))
742 av_dict_set(&st->metadata, "language", language, 0);
743 avio_rb16(pb); /* quality */
748 static int mov_read_mvhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
750 time_t creation_time;
751 int version = avio_r8(pb); /* version */
752 avio_rb24(pb); /* flags */
755 creation_time = avio_rb64(pb);
758 creation_time = avio_rb32(pb);
759 avio_rb32(pb); /* modification time */
761 mov_metadata_creation_time(&c->fc->metadata, creation_time);
762 c->time_scale = avio_rb32(pb); /* time scale */
764 av_dlog(c->fc, "time scale = %i\n", c->time_scale);
766 c->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
767 avio_rb32(pb); /* preferred scale */
769 avio_rb16(pb); /* preferred volume */
771 avio_skip(pb, 10); /* reserved */
773 avio_skip(pb, 36); /* display matrix */
775 avio_rb32(pb); /* preview time */
776 avio_rb32(pb); /* preview duration */
777 avio_rb32(pb); /* poster time */
778 avio_rb32(pb); /* selection time */
779 avio_rb32(pb); /* selection duration */
780 avio_rb32(pb); /* current time */
781 avio_rb32(pb); /* next track ID */
786 static int mov_read_smi(MOVContext *c, AVIOContext *pb, MOVAtom atom)
790 if (c->fc->nb_streams < 1)
792 st = c->fc->streams[c->fc->nb_streams-1];
794 if ((uint64_t)atom.size > (1<<30))
795 return AVERROR_INVALIDDATA;
797 // currently SVQ3 decoder expect full STSD header - so let's fake it
798 // this should be fixed and just SMI header should be passed
799 av_free(st->codec->extradata);
800 st->codec->extradata = av_mallocz(atom.size + 0x5a + FF_INPUT_BUFFER_PADDING_SIZE);
801 if (!st->codec->extradata)
802 return AVERROR(ENOMEM);
803 st->codec->extradata_size = 0x5a + atom.size;
804 memcpy(st->codec->extradata, "SVQ3", 4); // fake
805 avio_read(pb, st->codec->extradata + 0x5a, atom.size);
806 av_dlog(c->fc, "Reading SMI %"PRId64" %s\n", atom.size, st->codec->extradata + 0x5a);
810 static int mov_read_enda(MOVContext *c, AVIOContext *pb, MOVAtom atom)
815 if (c->fc->nb_streams < 1)
817 st = c->fc->streams[c->fc->nb_streams-1];
819 little_endian = avio_rb16(pb);
820 av_dlog(c->fc, "enda %d\n", little_endian);
821 if (little_endian == 1) {
822 switch (st->codec->codec_id) {
823 case AV_CODEC_ID_PCM_S24BE:
824 st->codec->codec_id = AV_CODEC_ID_PCM_S24LE;
826 case AV_CODEC_ID_PCM_S32BE:
827 st->codec->codec_id = AV_CODEC_ID_PCM_S32LE;
829 case AV_CODEC_ID_PCM_F32BE:
830 st->codec->codec_id = AV_CODEC_ID_PCM_F32LE;
832 case AV_CODEC_ID_PCM_F64BE:
833 st->codec->codec_id = AV_CODEC_ID_PCM_F64LE;
842 static int mov_read_fiel(MOVContext *c, AVIOContext *pb, MOVAtom atom)
845 unsigned mov_field_order;
846 enum AVFieldOrder decoded_field_order = AV_FIELD_UNKNOWN;
848 if (c->fc->nb_streams < 1) // will happen with jp2 files
850 st = c->fc->streams[c->fc->nb_streams-1];
852 return AVERROR_INVALIDDATA;
853 mov_field_order = avio_rb16(pb);
854 if ((mov_field_order & 0xFF00) == 0x0100)
855 decoded_field_order = AV_FIELD_PROGRESSIVE;
856 else if ((mov_field_order & 0xFF00) == 0x0200) {
857 switch (mov_field_order & 0xFF) {
858 case 0x01: decoded_field_order = AV_FIELD_TT;
860 case 0x06: decoded_field_order = AV_FIELD_BB;
862 case 0x09: decoded_field_order = AV_FIELD_TB;
864 case 0x0E: decoded_field_order = AV_FIELD_BT;
868 if (decoded_field_order == AV_FIELD_UNKNOWN && mov_field_order) {
869 av_log(NULL, AV_LOG_ERROR, "Unknown MOV field order 0x%04x\n", mov_field_order);
871 st->codec->field_order = decoded_field_order;
876 /* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
877 static int mov_read_extradata(MOVContext *c, AVIOContext *pb, MOVAtom atom)
884 if (c->fc->nb_streams < 1) // will happen with jp2 files
886 st= c->fc->streams[c->fc->nb_streams-1];
887 size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
888 if (size > INT_MAX || (uint64_t)atom.size > INT_MAX)
889 return AVERROR_INVALIDDATA;
890 if ((err = av_reallocp(&st->codec->extradata, size)) < 0) {
891 st->codec->extradata_size = 0;
894 buf = st->codec->extradata + st->codec->extradata_size;
895 st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE;
896 AV_WB32( buf , atom.size + 8);
897 AV_WL32( buf + 4, atom.type);
898 avio_read(pb, buf + 8, atom.size);
902 static int mov_read_wave(MOVContext *c, AVIOContext *pb, MOVAtom atom)
906 if (c->fc->nb_streams < 1)
908 st = c->fc->streams[c->fc->nb_streams-1];
910 if ((uint64_t)atom.size > (1<<30))
911 return AVERROR_INVALIDDATA;
913 if (st->codec->codec_id == AV_CODEC_ID_QDM2 || st->codec->codec_id == AV_CODEC_ID_QDMC) {
914 // pass all frma atom to codec, needed at least for QDMC and QDM2
915 av_free(st->codec->extradata);
916 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
917 if (!st->codec->extradata)
918 return AVERROR(ENOMEM);
919 st->codec->extradata_size = atom.size;
920 avio_read(pb, st->codec->extradata, atom.size);
921 } else if (atom.size > 8) { /* to read frma, esds atoms */
923 if ((ret = mov_read_default(c, pb, atom)) < 0)
926 avio_skip(pb, atom.size);
931 * This function reads atom content and puts data in extradata without tag
932 * nor size unlike mov_read_extradata.
934 static int mov_read_glbl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
938 if (c->fc->nb_streams < 1)
940 st = c->fc->streams[c->fc->nb_streams-1];
942 if ((uint64_t)atom.size > (1<<30))
943 return AVERROR_INVALIDDATA;
945 if (atom.size >= 10) {
946 // Broken files created by legacy versions of libavformat will
947 // wrap a whole fiel atom inside of a glbl atom.
948 unsigned size = avio_rb32(pb);
949 unsigned type = avio_rl32(pb);
950 avio_seek(pb, -8, SEEK_CUR);
951 if (type == MKTAG('f','i','e','l') && size == atom.size)
952 return mov_read_default(c, pb, atom);
954 av_free(st->codec->extradata);
955 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
956 if (!st->codec->extradata)
957 return AVERROR(ENOMEM);
958 st->codec->extradata_size = atom.size;
959 avio_read(pb, st->codec->extradata, atom.size);
963 static int mov_read_dvc1(MOVContext *c, AVIOContext *pb, MOVAtom atom)
966 uint8_t profile_level;
968 if (c->fc->nb_streams < 1)
970 st = c->fc->streams[c->fc->nb_streams-1];
972 if (atom.size >= (1<<28) || atom.size < 7)
973 return AVERROR_INVALIDDATA;
975 profile_level = avio_r8(pb);
976 if ((profile_level & 0xf0) != 0xc0)
979 av_free(st->codec->extradata);
980 st->codec->extradata = av_mallocz(atom.size - 7 + FF_INPUT_BUFFER_PADDING_SIZE);
981 if (!st->codec->extradata)
982 return AVERROR(ENOMEM);
983 st->codec->extradata_size = atom.size - 7;
984 avio_seek(pb, 6, SEEK_CUR);
985 avio_read(pb, st->codec->extradata, st->codec->extradata_size);
990 * An strf atom is a BITMAPINFOHEADER struct. This struct is 40 bytes itself,
991 * but can have extradata appended at the end after the 40 bytes belonging
994 static int mov_read_strf(MOVContext *c, AVIOContext *pb, MOVAtom atom)
998 if (c->fc->nb_streams < 1)
1000 if (atom.size <= 40)
1002 st = c->fc->streams[c->fc->nb_streams-1];
1004 if ((uint64_t)atom.size > (1<<30))
1005 return AVERROR_INVALIDDATA;
1007 av_free(st->codec->extradata);
1008 st->codec->extradata = av_mallocz(atom.size - 40 + FF_INPUT_BUFFER_PADDING_SIZE);
1009 if (!st->codec->extradata)
1010 return AVERROR(ENOMEM);
1011 st->codec->extradata_size = atom.size - 40;
1013 avio_read(pb, st->codec->extradata, atom.size - 40);
1017 static int mov_read_stco(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1020 MOVStreamContext *sc;
1021 unsigned int i, entries;
1023 if (c->fc->nb_streams < 1)
1025 st = c->fc->streams[c->fc->nb_streams-1];
1028 avio_r8(pb); /* version */
1029 avio_rb24(pb); /* flags */
1031 entries = avio_rb32(pb);
1035 if (entries >= UINT_MAX/sizeof(int64_t))
1036 return AVERROR_INVALIDDATA;
1038 sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
1039 if (!sc->chunk_offsets)
1040 return AVERROR(ENOMEM);
1041 sc->chunk_count = entries;
1043 if (atom.type == MKTAG('s','t','c','o'))
1044 for (i = 0; i < entries && !pb->eof_reached; i++)
1045 sc->chunk_offsets[i] = avio_rb32(pb);
1046 else if (atom.type == MKTAG('c','o','6','4'))
1047 for (i = 0; i < entries && !pb->eof_reached; i++)
1048 sc->chunk_offsets[i] = avio_rb64(pb);
1050 return AVERROR_INVALIDDATA;
1052 sc->chunk_count = i;
1054 if (pb->eof_reached)
1061 * Compute codec id for 'lpcm' tag.
1062 * See CoreAudioTypes and AudioStreamBasicDescription at Apple.
1064 enum AVCodecID ff_mov_get_lpcm_codec_id(int bps, int flags)
1071 return ff_get_pcm_codec_id(bps, flags & 1, flags & 2, flags & 4 ? -1 : 0);
1074 static int mov_codec_id(AVStream *st, uint32_t format)
1076 int id = ff_codec_get_id(ff_codec_movaudio_tags, format);
1079 ((format & 0xFFFF) == 'm' + ('s' << 8) ||
1080 (format & 0xFFFF) == 'T' + ('S' << 8)))
1081 id = ff_codec_get_id(ff_codec_wav_tags, av_bswap32(format) & 0xFFFF);
1083 if (st->codec->codec_type != AVMEDIA_TYPE_VIDEO && id > 0) {
1084 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
1085 } else if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO &&
1086 /* skip old asf mpeg4 tag */
1087 format && format != MKTAG('m','p','4','s')) {
1088 id = ff_codec_get_id(ff_codec_movvideo_tags, format);
1090 id = ff_codec_get_id(ff_codec_bmp_tags, format);
1092 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
1093 else if (st->codec->codec_type == AVMEDIA_TYPE_DATA) {
1094 id = ff_codec_get_id(ff_codec_movsubtitle_tags, format);
1096 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
1100 st->codec->codec_tag = format;
1105 static void mov_parse_stsd_video(MOVContext *c, AVIOContext *pb,
1106 AVStream *st, MOVStreamContext *sc)
1108 unsigned int color_depth, len, j;
1109 int color_greyscale;
1112 avio_rb16(pb); /* version */
1113 avio_rb16(pb); /* revision level */
1114 avio_rb32(pb); /* vendor */
1115 avio_rb32(pb); /* temporal quality */
1116 avio_rb32(pb); /* spatial quality */
1118 st->codec->width = avio_rb16(pb); /* width */
1119 st->codec->height = avio_rb16(pb); /* height */
1121 avio_rb32(pb); /* horiz resolution */
1122 avio_rb32(pb); /* vert resolution */
1123 avio_rb32(pb); /* data size, always 0 */
1124 avio_rb16(pb); /* frames per samples */
1126 len = avio_r8(pb); /* codec name, pascal string */
1129 mov_read_mac_string(c, pb, len, st->codec->codec_name, 32);
1131 avio_skip(pb, 31 - len);
1132 /* codec_tag YV12 triggers an UV swap in rawdec.c */
1133 if (!memcmp(st->codec->codec_name, "Planar Y'CbCr 8-bit 4:2:0", 25))
1134 st->codec->codec_tag = MKTAG('I', '4', '2', '0');
1135 /* Flash Media Server uses tag H263 with Sorenson Spark */
1136 if (st->codec->codec_tag == MKTAG('H','2','6','3') &&
1137 !memcmp(st->codec->codec_name, "Sorenson H263", 13))
1138 st->codec->codec_id = AV_CODEC_ID_FLV1;
1140 st->codec->bits_per_coded_sample = avio_rb16(pb); /* depth */
1141 color_table_id = avio_rb16(pb); /* colortable id */
1142 av_dlog(c->fc, "depth %d, ctab id %d\n",
1143 st->codec->bits_per_coded_sample, color_table_id);
1144 /* figure out the palette situation */
1145 color_depth = st->codec->bits_per_coded_sample & 0x1F;
1146 color_greyscale = st->codec->bits_per_coded_sample & 0x20;
1148 /* if the depth is 2, 4, or 8 bpp, file is palettized */
1149 if ((color_depth == 2) || (color_depth == 4) || (color_depth == 8)) {
1150 /* for palette traversal */
1151 unsigned int color_start, color_count, color_end;
1152 unsigned char r, g, b;
1154 if (color_greyscale) {
1155 int color_index, color_dec;
1156 /* compute the greyscale palette */
1157 st->codec->bits_per_coded_sample = color_depth;
1158 color_count = 1 << color_depth;
1160 color_dec = 256 / (color_count - 1);
1161 for (j = 0; j < color_count; j++) {
1162 r = g = b = color_index;
1163 sc->palette[j] = (r << 16) | (g << 8) | (b);
1164 color_index -= color_dec;
1165 if (color_index < 0)
1168 } else if (color_table_id) {
1169 const uint8_t *color_table;
1170 /* if flag bit 3 is set, use the default palette */
1171 color_count = 1 << color_depth;
1172 if (color_depth == 2)
1173 color_table = ff_qt_default_palette_4;
1174 else if (color_depth == 4)
1175 color_table = ff_qt_default_palette_16;
1177 color_table = ff_qt_default_palette_256;
1179 for (j = 0; j < color_count; j++) {
1180 r = color_table[j * 3 + 0];
1181 g = color_table[j * 3 + 1];
1182 b = color_table[j * 3 + 2];
1183 sc->palette[j] = (r << 16) | (g << 8) | (b);
1186 /* load the palette from the file */
1187 color_start = avio_rb32(pb);
1188 color_count = avio_rb16(pb);
1189 color_end = avio_rb16(pb);
1190 if ((color_start <= 255) && (color_end <= 255)) {
1191 for (j = color_start; j <= color_end; j++) {
1192 /* each R, G, or B component is 16 bits;
1193 * only use the top 8 bits; skip alpha bytes
1203 sc->palette[j] = (r << 16) | (g << 8) | (b);
1207 sc->has_palette = 1;
1211 static void mov_parse_stsd_audio(MOVContext *c, AVIOContext *pb,
1212 AVStream *st, MOVStreamContext *sc)
1214 int bits_per_sample, flags;
1215 uint16_t version = avio_rb16(pb);
1217 avio_rb16(pb); /* revision level */
1218 avio_rb32(pb); /* vendor */
1220 st->codec->channels = avio_rb16(pb); /* channel count */
1221 st->codec->bits_per_coded_sample = avio_rb16(pb); /* sample size */
1222 av_dlog(c->fc, "audio channels %d\n", st->codec->channels);
1224 sc->audio_cid = avio_rb16(pb);
1225 avio_rb16(pb); /* packet size = 0 */
1227 st->codec->sample_rate = ((avio_rb32(pb) >> 16));
1229 // Read QT version 1 fields. In version 0 these do not exist.
1230 av_dlog(c->fc, "version =%d, isom =%d\n", version, c->isom);
1233 sc->samples_per_frame = avio_rb32(pb);
1234 avio_rb32(pb); /* bytes per packet */
1235 sc->bytes_per_frame = avio_rb32(pb);
1236 avio_rb32(pb); /* bytes per sample */
1237 } else if (version == 2) {
1238 avio_rb32(pb); /* sizeof struct only */
1239 st->codec->sample_rate = av_int2double(avio_rb64(pb));
1240 st->codec->channels = avio_rb32(pb);
1241 avio_rb32(pb); /* always 0x7F000000 */
1242 st->codec->bits_per_coded_sample = avio_rb32(pb);
1244 flags = avio_rb32(pb); /* lpcm format specific flag */
1245 sc->bytes_per_frame = avio_rb32(pb);
1246 sc->samples_per_frame = avio_rb32(pb);
1247 if (st->codec->codec_tag == MKTAG('l','p','c','m'))
1248 st->codec->codec_id =
1249 ff_mov_get_lpcm_codec_id(st->codec->bits_per_coded_sample,
1254 switch (st->codec->codec_id) {
1255 case AV_CODEC_ID_PCM_S8:
1256 case AV_CODEC_ID_PCM_U8:
1257 if (st->codec->bits_per_coded_sample == 16)
1258 st->codec->codec_id = AV_CODEC_ID_PCM_S16BE;
1260 case AV_CODEC_ID_PCM_S16LE:
1261 case AV_CODEC_ID_PCM_S16BE:
1262 if (st->codec->bits_per_coded_sample == 8)
1263 st->codec->codec_id = AV_CODEC_ID_PCM_S8;
1264 else if (st->codec->bits_per_coded_sample == 24)
1265 st->codec->codec_id =
1266 st->codec->codec_id == AV_CODEC_ID_PCM_S16BE ?
1267 AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE;
1269 /* set values for old format before stsd version 1 appeared */
1270 case AV_CODEC_ID_MACE3:
1271 sc->samples_per_frame = 6;
1272 sc->bytes_per_frame = 2 * st->codec->channels;
1274 case AV_CODEC_ID_MACE6:
1275 sc->samples_per_frame = 6;
1276 sc->bytes_per_frame = 1 * st->codec->channels;
1278 case AV_CODEC_ID_ADPCM_IMA_QT:
1279 sc->samples_per_frame = 64;
1280 sc->bytes_per_frame = 34 * st->codec->channels;
1282 case AV_CODEC_ID_GSM:
1283 sc->samples_per_frame = 160;
1284 sc->bytes_per_frame = 33;
1290 bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
1291 if (bits_per_sample) {
1292 st->codec->bits_per_coded_sample = bits_per_sample;
1293 sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
1297 static void mov_parse_stsd_subtitle(MOVContext *c, AVIOContext *pb,
1298 AVStream *st, MOVStreamContext *sc,
1301 // ttxt stsd contains display flags, justification, background
1302 // color, fonts, and default styles, so fake an atom to read it
1303 MOVAtom fake_atom = { .size = size };
1304 // mp4s contains a regular esds atom
1305 if (st->codec->codec_tag != AV_RL32("mp4s"))
1306 mov_read_glbl(c, pb, fake_atom);
1307 st->codec->width = sc->width;
1308 st->codec->height = sc->height;
1311 static int mov_parse_stsd_data(MOVContext *c, AVIOContext *pb,
1312 AVStream *st, MOVStreamContext *sc,
1315 if (st->codec->codec_tag == MKTAG('t','m','c','d')) {
1316 st->codec->extradata_size = size;
1317 st->codec->extradata = av_malloc(size + FF_INPUT_BUFFER_PADDING_SIZE);
1318 if (!st->codec->extradata)
1319 return AVERROR(ENOMEM);
1320 avio_read(pb, st->codec->extradata, size);
1322 /* other codec type, just skip (rtp, mp4s ...) */
1323 avio_skip(pb, size);
1328 static int mov_finalize_stsd_codec(MOVContext *c, AVIOContext *pb,
1329 AVStream *st, MOVStreamContext *sc)
1331 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
1332 !st->codec->sample_rate && sc->time_scale > 1)
1333 st->codec->sample_rate = sc->time_scale;
1335 /* special codec parameters handling */
1336 switch (st->codec->codec_id) {
1337 #if CONFIG_DV_DEMUXER
1338 case AV_CODEC_ID_DVAUDIO:
1339 c->dv_fctx = avformat_alloc_context();
1340 c->dv_demux = avpriv_dv_init_demux(c->dv_fctx);
1342 av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
1343 return AVERROR(ENOMEM);
1345 sc->dv_audio_container = 1;
1346 st->codec->codec_id = AV_CODEC_ID_PCM_S16LE;
1349 /* no ifdef since parameters are always those */
1350 case AV_CODEC_ID_QCELP:
1351 st->codec->channels = 1;
1352 // force sample rate for qcelp when not stored in mov
1353 if (st->codec->codec_tag != MKTAG('Q','c','l','p'))
1354 st->codec->sample_rate = 8000;
1356 case AV_CODEC_ID_AMR_NB:
1357 st->codec->channels = 1;
1358 /* force sample rate for amr, stsd in 3gp does not store sample rate */
1359 st->codec->sample_rate = 8000;
1361 case AV_CODEC_ID_AMR_WB:
1362 st->codec->channels = 1;
1363 st->codec->sample_rate = 16000;
1365 case AV_CODEC_ID_MP2:
1366 case AV_CODEC_ID_MP3:
1367 /* force type after stsd for m1a hdlr */
1368 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
1369 st->need_parsing = AVSTREAM_PARSE_FULL;
1371 case AV_CODEC_ID_GSM:
1372 case AV_CODEC_ID_ADPCM_MS:
1373 case AV_CODEC_ID_ADPCM_IMA_WAV:
1374 case AV_CODEC_ID_ILBC:
1375 st->codec->block_align = sc->bytes_per_frame;
1377 case AV_CODEC_ID_ALAC:
1378 if (st->codec->extradata_size == 36) {
1379 st->codec->channels = AV_RB8 (st->codec->extradata + 21);
1380 st->codec->sample_rate = AV_RB32(st->codec->extradata + 32);
1383 case AV_CODEC_ID_VC1:
1384 st->need_parsing = AVSTREAM_PARSE_FULL;
1392 static int mov_skip_multiple_stsd(MOVContext *c, AVIOContext *pb,
1393 int codec_tag, int format,
1396 int video_codec_id = ff_codec_get_id(ff_codec_movvideo_tags, format);
1399 (codec_tag == AV_RL32("avc1") ||
1400 codec_tag == AV_RL32("hvc1") ||
1401 codec_tag == AV_RL32("hev1") ||
1402 (codec_tag != format &&
1403 (c->fc->video_codec_id ? video_codec_id != c->fc->video_codec_id
1404 : codec_tag != MKTAG('j','p','e','g'))))) {
1405 /* Multiple fourcc, we skip JPEG. This is not correct, we should
1406 * export it as a separate AVStream but this needs a few changes
1407 * in the MOV demuxer, patch welcome. */
1409 av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n");
1410 avio_skip(pb, size);
1417 int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries)
1420 MOVStreamContext *sc;
1421 int pseudo_stream_id;
1423 if (c->fc->nb_streams < 1)
1425 st = c->fc->streams[c->fc->nb_streams-1];
1428 for (pseudo_stream_id = 0;
1429 pseudo_stream_id < entries && !pb->eof_reached;
1430 pseudo_stream_id++) {
1431 //Parsing Sample description table
1433 int ret, dref_id = 1;
1434 MOVAtom a = { AV_RL32("stsd") };
1435 int64_t start_pos = avio_tell(pb);
1436 uint32_t size = avio_rb32(pb); /* size */
1437 uint32_t format = avio_rl32(pb); /* data format */
1440 avio_rb32(pb); /* reserved */
1441 avio_rb16(pb); /* reserved */
1442 dref_id = avio_rb16(pb);
1444 av_log(c->fc, AV_LOG_ERROR, "invalid size %d in stsd\n", size);
1445 return AVERROR_INVALIDDATA;
1448 if (mov_skip_multiple_stsd(c, pb, st->codec->codec_tag, format,
1449 size - (avio_tell(pb) - start_pos)))
1452 sc->pseudo_stream_id = st->codec->codec_tag ? -1 : pseudo_stream_id;
1453 sc->dref_id= dref_id;
1455 id = mov_codec_id(st, format);
1457 av_dlog(c->fc, "size=%d 4CC= %c%c%c%c codec_type=%d\n", size,
1458 (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff,
1459 (format >> 24) & 0xff, st->codec->codec_type);
1461 if (st->codec->codec_type==AVMEDIA_TYPE_VIDEO) {
1462 st->codec->codec_id = id;
1463 mov_parse_stsd_video(c, pb, st, sc);
1464 } else if (st->codec->codec_type==AVMEDIA_TYPE_AUDIO) {
1465 st->codec->codec_id = id;
1466 mov_parse_stsd_audio(c, pb, st, sc);
1467 } else if (st->codec->codec_type==AVMEDIA_TYPE_SUBTITLE){
1468 st->codec->codec_id = id;
1469 mov_parse_stsd_subtitle(c, pb, st, sc,
1470 size - (avio_tell(pb) - start_pos));
1472 ret = mov_parse_stsd_data(c, pb, st, sc,
1473 size - (avio_tell(pb) - start_pos));
1477 /* this will read extra atoms at the end (wave, alac, damr, avcC, hvcC, SMI ...) */
1478 a.size = size - (avio_tell(pb) - start_pos);
1480 if ((ret = mov_read_default(c, pb, a)) < 0)
1482 } else if (a.size > 0)
1483 avio_skip(pb, a.size);
1486 if (pb->eof_reached)
1489 return mov_finalize_stsd_codec(c, pb, st, sc);
1492 static int mov_read_stsd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1496 avio_r8(pb); /* version */
1497 avio_rb24(pb); /* flags */
1498 entries = avio_rb32(pb);
1500 return ff_mov_read_stsd_entries(c, pb, entries);
1503 static int mov_read_stsc(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1506 MOVStreamContext *sc;
1507 unsigned int i, entries;
1509 if (c->fc->nb_streams < 1)
1511 st = c->fc->streams[c->fc->nb_streams-1];
1514 avio_r8(pb); /* version */
1515 avio_rb24(pb); /* flags */
1517 entries = avio_rb32(pb);
1519 av_dlog(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
1523 if (entries >= UINT_MAX / sizeof(*sc->stsc_data))
1524 return AVERROR_INVALIDDATA;
1525 sc->stsc_data = av_malloc(entries * sizeof(*sc->stsc_data));
1527 return AVERROR(ENOMEM);
1529 for (i = 0; i < entries && !pb->eof_reached; i++) {
1530 sc->stsc_data[i].first = avio_rb32(pb);
1531 sc->stsc_data[i].count = avio_rb32(pb);
1532 sc->stsc_data[i].id = avio_rb32(pb);
1537 if (pb->eof_reached)
1543 static int mov_read_stps(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1546 MOVStreamContext *sc;
1547 unsigned i, entries;
1549 if (c->fc->nb_streams < 1)
1551 st = c->fc->streams[c->fc->nb_streams-1];
1554 avio_rb32(pb); // version + flags
1556 entries = avio_rb32(pb);
1557 if (entries >= UINT_MAX / sizeof(*sc->stps_data))
1558 return AVERROR_INVALIDDATA;
1559 sc->stps_data = av_malloc(entries * sizeof(*sc->stps_data));
1561 return AVERROR(ENOMEM);
1563 for (i = 0; i < entries && !pb->eof_reached; i++) {
1564 sc->stps_data[i] = avio_rb32(pb);
1565 //av_dlog(c->fc, "stps %d\n", sc->stps_data[i]);
1570 if (pb->eof_reached)
1576 static int mov_read_stss(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1579 MOVStreamContext *sc;
1580 unsigned int i, entries;
1582 if (c->fc->nb_streams < 1)
1584 st = c->fc->streams[c->fc->nb_streams-1];
1587 avio_r8(pb); /* version */
1588 avio_rb24(pb); /* flags */
1590 entries = avio_rb32(pb);
1592 av_dlog(c->fc, "keyframe_count = %d\n", entries);
1596 sc->keyframe_absent = 1;
1599 if (entries >= UINT_MAX / sizeof(int))
1600 return AVERROR_INVALIDDATA;
1601 sc->keyframes = av_malloc(entries * sizeof(int));
1603 return AVERROR(ENOMEM);
1605 for (i = 0; i < entries && !pb->eof_reached; i++) {
1606 sc->keyframes[i] = avio_rb32(pb);
1607 //av_dlog(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
1610 sc->keyframe_count = i;
1612 if (pb->eof_reached)
1618 static int mov_read_stsz(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1621 MOVStreamContext *sc;
1622 unsigned int i, entries, sample_size, field_size, num_bytes;
1626 if (c->fc->nb_streams < 1)
1628 st = c->fc->streams[c->fc->nb_streams-1];
1631 avio_r8(pb); /* version */
1632 avio_rb24(pb); /* flags */
1634 if (atom.type == MKTAG('s','t','s','z')) {
1635 sample_size = avio_rb32(pb);
1636 if (!sc->sample_size) /* do not overwrite value computed in stsd */
1637 sc->sample_size = sample_size;
1641 avio_rb24(pb); /* reserved */
1642 field_size = avio_r8(pb);
1644 entries = avio_rb32(pb);
1646 av_dlog(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, entries);
1648 sc->sample_count = entries;
1652 if (field_size != 4 && field_size != 8 && field_size != 16 && field_size != 32) {
1653 av_log(c->fc, AV_LOG_ERROR, "Invalid sample field size %d\n", field_size);
1654 return AVERROR_INVALIDDATA;
1659 if (entries >= UINT_MAX / sizeof(int) || entries >= (UINT_MAX - 4) / field_size)
1660 return AVERROR_INVALIDDATA;
1661 sc->sample_sizes = av_malloc(entries * sizeof(int));
1662 if (!sc->sample_sizes)
1663 return AVERROR(ENOMEM);
1665 num_bytes = (entries*field_size+4)>>3;
1667 buf = av_malloc(num_bytes+FF_INPUT_BUFFER_PADDING_SIZE);
1669 av_freep(&sc->sample_sizes);
1670 return AVERROR(ENOMEM);
1673 if (avio_read(pb, buf, num_bytes) < num_bytes) {
1674 av_freep(&sc->sample_sizes);
1676 return AVERROR_INVALIDDATA;
1679 init_get_bits(&gb, buf, 8*num_bytes);
1681 for (i = 0; i < entries && !pb->eof_reached; i++) {
1682 sc->sample_sizes[i] = get_bits_long(&gb, field_size);
1683 sc->data_size += sc->sample_sizes[i];
1686 sc->sample_count = i;
1688 if (pb->eof_reached)
1695 static int mov_read_stts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1698 MOVStreamContext *sc;
1699 unsigned int i, entries;
1701 int64_t total_sample_count=0;
1703 if (c->fc->nb_streams < 1)
1705 st = c->fc->streams[c->fc->nb_streams-1];
1708 avio_r8(pb); /* version */
1709 avio_rb24(pb); /* flags */
1710 entries = avio_rb32(pb);
1712 av_dlog(c->fc, "track[%i].stts.entries = %i\n",
1713 c->fc->nb_streams-1, entries);
1717 if (entries >= UINT_MAX / sizeof(*sc->stts_data))
1718 return AVERROR(EINVAL);
1720 av_free(sc->stts_data);
1721 sc->stts_data = av_malloc(entries * sizeof(*sc->stts_data));
1723 return AVERROR(ENOMEM);
1725 for (i = 0; i < entries && !pb->eof_reached; i++) {
1726 int sample_duration;
1729 sample_count=avio_rb32(pb);
1730 sample_duration = avio_rb32(pb);
1731 if (sample_count < 0) {
1732 av_log(c->fc, AV_LOG_ERROR, "Invalid sample_count=%d\n", sample_count);
1733 return AVERROR_INVALIDDATA;
1735 sc->stts_data[i].count= sample_count;
1736 sc->stts_data[i].duration= sample_duration;
1738 av_dlog(c->fc, "sample_count=%d, sample_duration=%d\n",
1739 sample_count, sample_duration);
1741 duration+=(int64_t)sample_duration*sample_count;
1742 total_sample_count+=sample_count;
1747 if (pb->eof_reached)
1750 st->nb_frames= total_sample_count;
1752 st->duration= duration;
1753 sc->track_end = duration;
1757 static int mov_read_ctts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1760 MOVStreamContext *sc;
1761 unsigned int i, entries;
1763 if (c->fc->nb_streams < 1)
1765 st = c->fc->streams[c->fc->nb_streams-1];
1768 avio_r8(pb); /* version */
1769 avio_rb24(pb); /* flags */
1770 entries = avio_rb32(pb);
1772 av_dlog(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
1776 if (entries >= UINT_MAX / sizeof(*sc->ctts_data))
1777 return AVERROR_INVALIDDATA;
1778 sc->ctts_data = av_malloc(entries * sizeof(*sc->ctts_data));
1780 return AVERROR(ENOMEM);
1782 for (i = 0; i < entries && !pb->eof_reached; i++) {
1783 int count =avio_rb32(pb);
1784 int duration =avio_rb32(pb);
1786 sc->ctts_data[i].count = count;
1787 sc->ctts_data[i].duration= duration;
1789 sc->dts_shift = FFMAX(sc->dts_shift, -duration);
1794 if (pb->eof_reached)
1797 av_dlog(c->fc, "dts shift %d\n", sc->dts_shift);
1802 static int mov_read_sbgp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1805 MOVStreamContext *sc;
1806 unsigned int i, entries;
1808 uint32_t grouping_type;
1810 if (c->fc->nb_streams < 1)
1812 st = c->fc->streams[c->fc->nb_streams-1];
1815 version = avio_r8(pb); /* version */
1816 avio_rb24(pb); /* flags */
1817 grouping_type = avio_rl32(pb);
1818 if (grouping_type != MKTAG( 'r','a','p',' '))
1819 return 0; /* only support 'rap ' grouping */
1821 avio_rb32(pb); /* grouping_type_parameter */
1823 entries = avio_rb32(pb);
1826 if (entries >= UINT_MAX / sizeof(*sc->rap_group))
1827 return AVERROR_INVALIDDATA;
1828 sc->rap_group = av_malloc(entries * sizeof(*sc->rap_group));
1830 return AVERROR(ENOMEM);
1832 for (i = 0; i < entries && !pb->eof_reached; i++) {
1833 sc->rap_group[i].count = avio_rb32(pb); /* sample_count */
1834 sc->rap_group[i].index = avio_rb32(pb); /* group_description_index */
1837 sc->rap_group_count = i;
1839 return pb->eof_reached ? AVERROR_EOF : 0;
1842 static void mov_build_index(MOVContext *mov, AVStream *st)
1844 MOVStreamContext *sc = st->priv_data;
1845 int64_t current_offset;
1846 int64_t current_dts = 0;
1847 unsigned int stts_index = 0;
1848 unsigned int stsc_index = 0;
1849 unsigned int stss_index = 0;
1850 unsigned int stps_index = 0;
1852 uint64_t stream_size = 0;
1854 /* adjust first dts according to edit list */
1855 if (sc->time_offset && mov->time_scale > 0) {
1856 if (sc->time_offset < 0)
1857 sc->time_offset = av_rescale(sc->time_offset, sc->time_scale, mov->time_scale);
1858 current_dts = -sc->time_offset;
1859 if (sc->ctts_data && sc->stts_data && sc->stts_data[0].duration &&
1860 sc->ctts_data[0].duration / sc->stts_data[0].duration > 16) {
1861 /* more than 16 frames delay, dts are likely wrong
1862 this happens with files created by iMovie */
1864 st->codec->has_b_frames = 1;
1868 /* only use old uncompressed audio chunk demuxing when stts specifies it */
1869 if (!(st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
1870 sc->stts_count == 1 && sc->stts_data[0].duration == 1)) {
1871 unsigned int current_sample = 0;
1872 unsigned int stts_sample = 0;
1873 unsigned int sample_size;
1874 unsigned int distance = 0;
1875 unsigned int rap_group_index = 0;
1876 unsigned int rap_group_sample = 0;
1877 int rap_group_present = sc->rap_group_count && sc->rap_group;
1878 int key_off = (sc->keyframes && sc->keyframes[0] > 0) || (sc->stps_data && sc->stps_data[0] > 0);
1880 current_dts -= sc->dts_shift;
1882 if (!sc->sample_count)
1884 if (sc->sample_count >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries)
1886 if (av_reallocp_array(&st->index_entries,
1887 st->nb_index_entries + sc->sample_count,
1888 sizeof(*st->index_entries)) < 0) {
1889 st->nb_index_entries = 0;
1892 st->index_entries_allocated_size = (st->nb_index_entries + sc->sample_count) * sizeof(*st->index_entries);
1894 for (i = 0; i < sc->chunk_count; i++) {
1895 current_offset = sc->chunk_offsets[i];
1896 while (stsc_index + 1 < sc->stsc_count &&
1897 i + 1 == sc->stsc_data[stsc_index + 1].first)
1899 for (j = 0; j < sc->stsc_data[stsc_index].count; j++) {
1901 if (current_sample >= sc->sample_count) {
1902 av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
1906 if (!sc->keyframe_absent && (!sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index])) {
1908 if (stss_index + 1 < sc->keyframe_count)
1910 } else if (sc->stps_count && current_sample+key_off == sc->stps_data[stps_index]) {
1912 if (stps_index + 1 < sc->stps_count)
1915 if (rap_group_present && rap_group_index < sc->rap_group_count) {
1916 if (sc->rap_group[rap_group_index].index > 0)
1918 if (++rap_group_sample == sc->rap_group[rap_group_index].count) {
1919 rap_group_sample = 0;
1925 sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
1926 if (sc->pseudo_stream_id == -1 ||
1927 sc->stsc_data[stsc_index].id - 1 == sc->pseudo_stream_id) {
1928 AVIndexEntry *e = &st->index_entries[st->nb_index_entries++];
1929 e->pos = current_offset;
1930 e->timestamp = current_dts;
1931 e->size = sample_size;
1932 e->min_distance = distance;
1933 e->flags = keyframe ? AVINDEX_KEYFRAME : 0;
1934 av_dlog(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
1935 "size %d, distance %d, keyframe %d\n", st->index, current_sample,
1936 current_offset, current_dts, sample_size, distance, keyframe);
1939 current_offset += sample_size;
1940 stream_size += sample_size;
1941 current_dts += sc->stts_data[stts_index].duration;
1945 if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
1951 if (st->duration > 0)
1952 st->codec->bit_rate = stream_size*8*sc->time_scale/st->duration;
1954 unsigned chunk_samples, total = 0;
1956 // compute total chunk count
1957 for (i = 0; i < sc->stsc_count; i++) {
1958 unsigned count, chunk_count;
1960 chunk_samples = sc->stsc_data[i].count;
1961 if (i != sc->stsc_count - 1 &&
1962 sc->samples_per_frame && chunk_samples % sc->samples_per_frame) {
1963 av_log(mov->fc, AV_LOG_ERROR, "error unaligned chunk\n");
1967 if (sc->samples_per_frame >= 160) { // gsm
1968 count = chunk_samples / sc->samples_per_frame;
1969 } else if (sc->samples_per_frame > 1) {
1970 unsigned samples = (1024/sc->samples_per_frame)*sc->samples_per_frame;
1971 count = (chunk_samples+samples-1) / samples;
1973 count = (chunk_samples+1023) / 1024;
1976 if (i < sc->stsc_count - 1)
1977 chunk_count = sc->stsc_data[i+1].first - sc->stsc_data[i].first;
1979 chunk_count = sc->chunk_count - (sc->stsc_data[i].first - 1);
1980 total += chunk_count * count;
1983 av_dlog(mov->fc, "chunk count %d\n", total);
1984 if (total >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries)
1986 if (av_reallocp_array(&st->index_entries,
1987 st->nb_index_entries + total,
1988 sizeof(*st->index_entries)) < 0) {
1989 st->nb_index_entries = 0;
1992 st->index_entries_allocated_size = (st->nb_index_entries + total) * sizeof(*st->index_entries);
1995 for (i = 0; i < sc->chunk_count; i++) {
1996 current_offset = sc->chunk_offsets[i];
1997 if (stsc_index + 1 < sc->stsc_count &&
1998 i + 1 == sc->stsc_data[stsc_index + 1].first)
2000 chunk_samples = sc->stsc_data[stsc_index].count;
2002 while (chunk_samples > 0) {
2004 unsigned size, samples;
2006 if (sc->samples_per_frame >= 160) { // gsm
2007 samples = sc->samples_per_frame;
2008 size = sc->bytes_per_frame;
2010 if (sc->samples_per_frame > 1) {
2011 samples = FFMIN((1024 / sc->samples_per_frame)*
2012 sc->samples_per_frame, chunk_samples);
2013 size = (samples / sc->samples_per_frame) * sc->bytes_per_frame;
2015 samples = FFMIN(1024, chunk_samples);
2016 size = samples * sc->sample_size;
2020 if (st->nb_index_entries >= total) {
2021 av_log(mov->fc, AV_LOG_ERROR, "wrong chunk count %d\n", total);
2024 e = &st->index_entries[st->nb_index_entries++];
2025 e->pos = current_offset;
2026 e->timestamp = current_dts;
2028 e->min_distance = 0;
2029 e->flags = AVINDEX_KEYFRAME;
2030 av_dlog(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", "
2031 "size %d, duration %d\n", st->index, i, current_offset, current_dts,
2034 current_offset += size;
2035 current_dts += samples;
2036 chunk_samples -= samples;
2042 static int mov_open_dref(AVIOContext **pb, char *src, MOVDref *ref,
2043 AVIOInterruptCB *int_cb)
2045 /* try relative path, we do not try the absolute because it can leak information about our
2046 system to an attacker */
2047 if (ref->nlvl_to > 0 && ref->nlvl_from > 0) {
2048 char filename[1024];
2052 /* find a source dir */
2053 src_path = strrchr(src, '/');
2059 /* find a next level down to target */
2060 for (i = 0, l = strlen(ref->path) - 1; l >= 0; l--)
2061 if (ref->path[l] == '/') {
2062 if (i == ref->nlvl_to - 1)
2068 /* compose filename if next level down to target was found */
2069 if (i == ref->nlvl_to - 1 && src_path - src < sizeof(filename)) {
2070 memcpy(filename, src, src_path - src);
2071 filename[src_path - src] = 0;
2073 for (i = 1; i < ref->nlvl_from; i++)
2074 av_strlcat(filename, "../", 1024);
2076 av_strlcat(filename, ref->path + l + 1, 1024);
2078 if (!avio_open2(pb, filename, AVIO_FLAG_READ, int_cb, NULL))
2083 return AVERROR(ENOENT);
2086 static int mov_read_trak(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2089 MOVStreamContext *sc;
2092 st = avformat_new_stream(c->fc, NULL);
2093 if (!st) return AVERROR(ENOMEM);
2094 st->id = c->fc->nb_streams;
2095 sc = av_mallocz(sizeof(MOVStreamContext));
2096 if (!sc) return AVERROR(ENOMEM);
2099 st->codec->codec_type = AVMEDIA_TYPE_DATA;
2100 sc->ffindex = st->index;
2102 if ((ret = mov_read_default(c, pb, atom)) < 0)
2106 if (sc->chunk_count && (!sc->stts_count || !sc->stsc_count ||
2107 (!sc->sample_size && !sc->sample_count))) {
2108 av_log(c->fc, AV_LOG_ERROR, "stream %d, missing mandatory atoms, broken header\n",
2113 if (sc->time_scale <= 0) {
2114 av_log(c->fc, AV_LOG_WARNING, "stream %d, timescale not set\n", st->index);
2115 sc->time_scale = c->time_scale;
2116 if (sc->time_scale <= 0)
2120 avpriv_set_pts_info(st, 64, 1, sc->time_scale);
2122 mov_build_index(c, st);
2124 if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) {
2125 MOVDref *dref = &sc->drefs[sc->dref_id - 1];
2126 if (mov_open_dref(&sc->pb, c->fc->filename, dref, &c->fc->interrupt_callback) < 0)
2127 av_log(c->fc, AV_LOG_ERROR,
2128 "stream %d, error opening alias: path='%s', dir='%s', "
2129 "filename='%s', volume='%s', nlvl_from=%d, nlvl_to=%d\n",
2130 st->index, dref->path, dref->dir, dref->filename,
2131 dref->volume, dref->nlvl_from, dref->nlvl_to);
2135 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2136 if (!st->sample_aspect_ratio.num &&
2137 (st->codec->width != sc->width || st->codec->height != sc->height)) {
2138 st->sample_aspect_ratio = av_d2q(((double)st->codec->height * sc->width) /
2139 ((double)st->codec->width * sc->height), INT_MAX);
2143 // done for ai5q, ai52, ai55, ai1q, ai12 and ai15.
2144 if (!st->codec->extradata_size && st->codec->codec_id == AV_CODEC_ID_H264 &&
2145 TAG_IS_AVCI(st->codec->codec_tag)) {
2146 ret = ff_generate_avci_extradata(st);
2151 switch (st->codec->codec_id) {
2152 #if CONFIG_H261_DECODER
2153 case AV_CODEC_ID_H261:
2155 #if CONFIG_H263_DECODER
2156 case AV_CODEC_ID_H263:
2158 #if CONFIG_MPEG4_DECODER
2159 case AV_CODEC_ID_MPEG4:
2161 st->codec->width = 0; /* let decoder init width/height */
2162 st->codec->height= 0;
2166 /* Do not need those anymore. */
2167 av_freep(&sc->chunk_offsets);
2168 av_freep(&sc->stsc_data);
2169 av_freep(&sc->sample_sizes);
2170 av_freep(&sc->keyframes);
2171 av_freep(&sc->stts_data);
2172 av_freep(&sc->stps_data);
2173 av_freep(&sc->rap_group);
2178 static int mov_read_ilst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2181 c->itunes_metadata = 1;
2182 ret = mov_read_default(c, pb, atom);
2183 c->itunes_metadata = 0;
2187 static int mov_read_meta(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2189 while (atom.size > 8) {
2190 uint32_t tag = avio_rl32(pb);
2192 if (tag == MKTAG('h','d','l','r')) {
2193 avio_seek(pb, -8, SEEK_CUR);
2195 return mov_read_default(c, pb, atom);
2201 static int mov_read_tkhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2206 int64_t disp_transform[2];
2207 int display_matrix[3][2];
2209 MOVStreamContext *sc;
2213 if (c->fc->nb_streams < 1)
2215 st = c->fc->streams[c->fc->nb_streams-1];
2218 version = avio_r8(pb);
2219 flags = avio_rb24(pb);
2220 st->disposition |= (flags & MOV_TKHD_FLAG_ENABLED) ? AV_DISPOSITION_DEFAULT : 0;
2226 avio_rb32(pb); /* creation time */
2227 avio_rb32(pb); /* modification time */
2229 st->id = (int)avio_rb32(pb); /* track id (NOT 0 !)*/
2230 avio_rb32(pb); /* reserved */
2232 /* highlevel (considering edits) duration in movie timebase */
2233 (version == 1) ? avio_rb64(pb) : avio_rb32(pb);
2234 avio_rb32(pb); /* reserved */
2235 avio_rb32(pb); /* reserved */
2237 avio_rb16(pb); /* layer */
2238 avio_rb16(pb); /* alternate group */
2239 avio_rb16(pb); /* volume */
2240 avio_rb16(pb); /* reserved */
2242 //read in the display matrix (outlined in ISO 14496-12, Section 6.2.2)
2243 // they're kept in fixed point format through all calculations
2244 // ignore u,v,z b/c we don't need the scale factor to calc aspect ratio
2245 for (i = 0; i < 3; i++) {
2246 display_matrix[i][0] = avio_rb32(pb); // 16.16 fixed point
2247 display_matrix[i][1] = avio_rb32(pb); // 16.16 fixed point
2248 avio_rb32(pb); // 2.30 fixed point (not used)
2251 width = avio_rb32(pb); // 16.16 fixed point track width
2252 height = avio_rb32(pb); // 16.16 fixed point track height
2253 sc->width = width >> 16;
2254 sc->height = height >> 16;
2256 // transform the display width/height according to the matrix
2257 // skip this if the display matrix is the default identity matrix
2258 // or if it is rotating the picture, ex iPhone 3GS
2259 // to keep the same scale, use [width height 1<<16]
2260 if (width && height &&
2261 ((display_matrix[0][0] != 65536 ||
2262 display_matrix[1][1] != 65536) &&
2263 !display_matrix[0][1] &&
2264 !display_matrix[1][0] &&
2265 !display_matrix[2][0] && !display_matrix[2][1])) {
2266 for (i = 0; i < 2; i++)
2268 (int64_t) width * display_matrix[0][i] +
2269 (int64_t) height * display_matrix[1][i] +
2270 ((int64_t) display_matrix[2][i] << 16);
2272 //sample aspect ratio is new width/height divided by old width/height
2273 st->sample_aspect_ratio = av_d2q(
2274 ((double) disp_transform[0] * height) /
2275 ((double) disp_transform[1] * width), INT_MAX);
2280 static int mov_read_tfhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2282 MOVFragment *frag = &c->fragment;
2283 MOVTrackExt *trex = NULL;
2284 int flags, track_id, i;
2286 avio_r8(pb); /* version */
2287 flags = avio_rb24(pb);
2289 track_id = avio_rb32(pb);
2291 return AVERROR_INVALIDDATA;
2292 frag->track_id = track_id;
2293 for (i = 0; i < c->trex_count; i++)
2294 if (c->trex_data[i].track_id == frag->track_id) {
2295 trex = &c->trex_data[i];
2299 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding trex\n");
2300 return AVERROR_INVALIDDATA;
2303 frag->base_data_offset = flags & MOV_TFHD_BASE_DATA_OFFSET ?
2304 avio_rb64(pb) : frag->moof_offset;
2305 frag->stsd_id = flags & MOV_TFHD_STSD_ID ? avio_rb32(pb) : trex->stsd_id;
2307 frag->duration = flags & MOV_TFHD_DEFAULT_DURATION ?
2308 avio_rb32(pb) : trex->duration;
2309 frag->size = flags & MOV_TFHD_DEFAULT_SIZE ?
2310 avio_rb32(pb) : trex->size;
2311 frag->flags = flags & MOV_TFHD_DEFAULT_FLAGS ?
2312 avio_rb32(pb) : trex->flags;
2313 av_dlog(c->fc, "frag flags 0x%x\n", frag->flags);
2317 static int mov_read_chap(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2319 c->chapter_track = avio_rb32(pb);
2323 static int mov_read_trex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2328 if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data))
2329 return AVERROR_INVALIDDATA;
2330 if ((err = av_reallocp_array(&c->trex_data, c->trex_count + 1,
2331 sizeof(*c->trex_data))) < 0) {
2335 trex = &c->trex_data[c->trex_count++];
2336 avio_r8(pb); /* version */
2337 avio_rb24(pb); /* flags */
2338 trex->track_id = avio_rb32(pb);
2339 trex->stsd_id = avio_rb32(pb);
2340 trex->duration = avio_rb32(pb);
2341 trex->size = avio_rb32(pb);
2342 trex->flags = avio_rb32(pb);
2346 static int mov_read_trun(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2348 MOVFragment *frag = &c->fragment;
2349 AVStream *st = NULL;
2350 MOVStreamContext *sc;
2354 int data_offset = 0;
2355 unsigned entries, first_sample_flags = frag->flags;
2356 int flags, distance, i, found_keyframe = 0, err;
2358 for (i = 0; i < c->fc->nb_streams; i++) {
2359 if (c->fc->streams[i]->id == frag->track_id) {
2360 st = c->fc->streams[i];
2365 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id);
2366 return AVERROR_INVALIDDATA;
2369 if (sc->pseudo_stream_id+1 != frag->stsd_id)
2371 avio_r8(pb); /* version */
2372 flags = avio_rb24(pb);
2373 entries = avio_rb32(pb);
2374 av_dlog(c->fc, "flags 0x%x entries %d\n", flags, entries);
2376 /* Always assume the presence of composition time offsets.
2377 * Without this assumption, for instance, we cannot deal with a track in fragmented movies that meet the following.
2378 * 1) in the initial movie, there are no samples.
2379 * 2) in the first movie fragment, there is only one sample without composition time offset.
2380 * 3) in the subsequent movie fragments, there are samples with composition time offset. */
2381 if (!sc->ctts_count && sc->sample_count)
2383 /* Complement ctts table if moov atom doesn't have ctts atom. */
2384 ctts_data = av_realloc(NULL, sizeof(*sc->ctts_data));
2386 return AVERROR(ENOMEM);
2387 sc->ctts_data = ctts_data;
2388 sc->ctts_data[sc->ctts_count].count = sc->sample_count;
2389 sc->ctts_data[sc->ctts_count].duration = 0;
2392 if ((uint64_t)entries+sc->ctts_count >= UINT_MAX/sizeof(*sc->ctts_data))
2393 return AVERROR_INVALIDDATA;
2394 if ((err = av_reallocp_array(&sc->ctts_data, entries + sc->ctts_count,
2395 sizeof(*sc->ctts_data))) < 0) {
2399 if (flags & MOV_TRUN_DATA_OFFSET) data_offset = avio_rb32(pb);
2400 if (flags & MOV_TRUN_FIRST_SAMPLE_FLAGS) first_sample_flags = avio_rb32(pb);
2401 dts = sc->track_end - sc->time_offset;
2402 offset = frag->base_data_offset + data_offset;
2404 av_dlog(c->fc, "first sample flags 0x%x\n", first_sample_flags);
2405 for (i = 0; i < entries && !pb->eof_reached; i++) {
2406 unsigned sample_size = frag->size;
2407 int sample_flags = i ? frag->flags : first_sample_flags;
2408 unsigned sample_duration = frag->duration;
2411 if (flags & MOV_TRUN_SAMPLE_DURATION) sample_duration = avio_rb32(pb);
2412 if (flags & MOV_TRUN_SAMPLE_SIZE) sample_size = avio_rb32(pb);
2413 if (flags & MOV_TRUN_SAMPLE_FLAGS) sample_flags = avio_rb32(pb);
2414 sc->ctts_data[sc->ctts_count].count = 1;
2415 sc->ctts_data[sc->ctts_count].duration = (flags & MOV_TRUN_SAMPLE_CTS) ?
2418 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
2420 else if (!found_keyframe)
2421 keyframe = found_keyframe =
2422 !(sample_flags & (MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC |
2423 MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES));
2426 av_add_index_entry(st, offset, dts, sample_size, distance,
2427 keyframe ? AVINDEX_KEYFRAME : 0);
2428 av_dlog(c->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
2429 "size %d, distance %d, keyframe %d\n", st->index, sc->sample_count+i,
2430 offset, dts, sample_size, distance, keyframe);
2432 dts += sample_duration;
2433 offset += sample_size;
2434 sc->data_size += sample_size;
2437 if (pb->eof_reached)
2440 frag->moof_offset = offset;
2441 st->duration = sc->track_end = dts + sc->time_offset;
2445 /* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
2446 /* like the files created with Adobe Premiere 5.0, for samples see */
2447 /* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
2448 static int mov_read_wide(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2453 return 0; /* continue */
2454 if (avio_rb32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
2455 avio_skip(pb, atom.size - 4);
2458 atom.type = avio_rl32(pb);
2460 if (atom.type != MKTAG('m','d','a','t')) {
2461 avio_skip(pb, atom.size);
2464 err = mov_read_mdat(c, pb, atom);
2468 static int mov_read_cmov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2473 uint8_t *moov_data; /* uncompressed data */
2474 long cmov_len, moov_len;
2477 avio_rb32(pb); /* dcom atom */
2478 if (avio_rl32(pb) != MKTAG('d','c','o','m'))
2479 return AVERROR_INVALIDDATA;
2480 if (avio_rl32(pb) != MKTAG('z','l','i','b')) {
2481 av_log(c->fc, AV_LOG_ERROR, "unknown compression for cmov atom !");
2482 return AVERROR_INVALIDDATA;
2484 avio_rb32(pb); /* cmvd atom */
2485 if (avio_rl32(pb) != MKTAG('c','m','v','d'))
2486 return AVERROR_INVALIDDATA;
2487 moov_len = avio_rb32(pb); /* uncompressed size */
2488 cmov_len = atom.size - 6 * 4;
2490 cmov_data = av_malloc(cmov_len);
2492 return AVERROR(ENOMEM);
2493 moov_data = av_malloc(moov_len);
2496 return AVERROR(ENOMEM);
2498 avio_read(pb, cmov_data, cmov_len);
2499 if (uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
2500 goto free_and_return;
2501 if (ffio_init_context(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
2502 goto free_and_return;
2503 atom.type = MKTAG('m','o','o','v');
2504 atom.size = moov_len;
2505 ret = mov_read_default(c, &ctx, atom);
2511 av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
2512 return AVERROR(ENOSYS);
2516 /* edit list atom */
2517 static int mov_read_elst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2519 MOVStreamContext *sc;
2520 int i, edit_count, version;
2522 if (c->fc->nb_streams < 1)
2524 sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
2526 version = avio_r8(pb); /* version */
2527 avio_rb24(pb); /* flags */
2528 edit_count = avio_rb32(pb); /* entries */
2530 if ((uint64_t)edit_count*12+8 > atom.size)
2531 return AVERROR_INVALIDDATA;
2533 for (i=0; i<edit_count; i++){
2537 duration = avio_rb64(pb);
2538 time = avio_rb64(pb);
2540 duration = avio_rb32(pb); /* segment duration */
2541 time = (int32_t)avio_rb32(pb); /* media time */
2543 avio_rb32(pb); /* Media rate */
2544 if (i == 0 && time >= -1) {
2545 sc->time_offset = time != -1 ? time : -duration;
2550 av_log(c->fc, AV_LOG_WARNING, "multiple edit list entries, "
2551 "a/v desync might occur, patch welcome\n");
2553 av_dlog(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, edit_count);
2557 static const MOVParseTableEntry mov_default_parse_table[] = {
2558 { MKTAG('a','v','s','s'), mov_read_extradata },
2559 { MKTAG('c','h','p','l'), mov_read_chpl },
2560 { MKTAG('c','o','6','4'), mov_read_stco },
2561 { MKTAG('c','t','t','s'), mov_read_ctts }, /* composition time to sample */
2562 { MKTAG('d','i','n','f'), mov_read_default },
2563 { MKTAG('d','r','e','f'), mov_read_dref },
2564 { MKTAG('e','d','t','s'), mov_read_default },
2565 { MKTAG('e','l','s','t'), mov_read_elst },
2566 { MKTAG('e','n','d','a'), mov_read_enda },
2567 { MKTAG('f','i','e','l'), mov_read_fiel },
2568 { MKTAG('f','t','y','p'), mov_read_ftyp },
2569 { MKTAG('g','l','b','l'), mov_read_glbl },
2570 { MKTAG('h','d','l','r'), mov_read_hdlr },
2571 { MKTAG('i','l','s','t'), mov_read_ilst },
2572 { MKTAG('j','p','2','h'), mov_read_extradata },
2573 { MKTAG('m','d','a','t'), mov_read_mdat },
2574 { MKTAG('m','d','h','d'), mov_read_mdhd },
2575 { MKTAG('m','d','i','a'), mov_read_default },
2576 { MKTAG('m','e','t','a'), mov_read_meta },
2577 { MKTAG('m','i','n','f'), mov_read_default },
2578 { MKTAG('m','o','o','f'), mov_read_moof },
2579 { MKTAG('m','o','o','v'), mov_read_moov },
2580 { MKTAG('m','v','e','x'), mov_read_default },
2581 { MKTAG('m','v','h','d'), mov_read_mvhd },
2582 { MKTAG('S','M','I',' '), mov_read_smi }, /* Sorenson extension ??? */
2583 { MKTAG('a','l','a','c'), mov_read_extradata }, /* alac specific atom */
2584 { MKTAG('a','v','c','C'), mov_read_glbl },
2585 { MKTAG('p','a','s','p'), mov_read_pasp },
2586 { MKTAG('s','t','b','l'), mov_read_default },
2587 { MKTAG('s','t','c','o'), mov_read_stco },
2588 { MKTAG('s','t','p','s'), mov_read_stps },
2589 { MKTAG('s','t','r','f'), mov_read_strf },
2590 { MKTAG('s','t','s','c'), mov_read_stsc },
2591 { MKTAG('s','t','s','d'), mov_read_stsd }, /* sample description */
2592 { MKTAG('s','t','s','s'), mov_read_stss }, /* sync sample */
2593 { MKTAG('s','t','s','z'), mov_read_stsz }, /* sample size */
2594 { MKTAG('s','t','t','s'), mov_read_stts },
2595 { MKTAG('s','t','z','2'), mov_read_stsz }, /* compact sample size */
2596 { MKTAG('t','k','h','d'), mov_read_tkhd }, /* track header */
2597 { MKTAG('t','f','h','d'), mov_read_tfhd }, /* track fragment header */
2598 { MKTAG('t','r','a','k'), mov_read_trak },
2599 { MKTAG('t','r','a','f'), mov_read_default },
2600 { MKTAG('t','r','e','f'), mov_read_default },
2601 { MKTAG('c','h','a','p'), mov_read_chap },
2602 { MKTAG('t','r','e','x'), mov_read_trex },
2603 { MKTAG('t','r','u','n'), mov_read_trun },
2604 { MKTAG('u','d','t','a'), mov_read_default },
2605 { MKTAG('w','a','v','e'), mov_read_wave },
2606 { MKTAG('e','s','d','s'), mov_read_esds },
2607 { MKTAG('d','a','c','3'), mov_read_dac3 }, /* AC-3 info */
2608 { MKTAG('d','e','c','3'), mov_read_dec3 }, /* EAC-3 info */
2609 { MKTAG('w','i','d','e'), mov_read_wide }, /* place holder */
2610 { MKTAG('w','f','e','x'), mov_read_wfex },
2611 { MKTAG('c','m','o','v'), mov_read_cmov },
2612 { MKTAG('c','h','a','n'), mov_read_chan }, /* channel layout */
2613 { MKTAG('d','v','c','1'), mov_read_dvc1 },
2614 { MKTAG('s','b','g','p'), mov_read_sbgp },
2615 { MKTAG('h','v','c','C'), mov_read_glbl },
2619 static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2621 int64_t total_size = 0;
2626 atom.size = INT64_MAX;
2627 while (total_size + 8 < atom.size && !pb->eof_reached) {
2628 int (*parse)(MOVContext*, AVIOContext*, MOVAtom) = NULL;
2631 if (atom.size >= 8) {
2632 a.size = avio_rb32(pb);
2633 a.type = avio_rl32(pb);
2635 av_dlog(c->fc, "type: %08x '%.4s' parent:'%.4s' sz: %"PRId64" %"PRId64" %"PRId64"\n",
2636 a.type, (char*)&a.type, (char*)&atom.type, a.size, total_size, atom.size);
2638 if (a.size == 1) { /* 64 bit extended size */
2639 a.size = avio_rb64(pb) - 8;
2643 a.size = atom.size - total_size;
2650 a.size = FFMIN(a.size, atom.size - total_size);
2652 for (i = 0; mov_default_parse_table[i].type; i++)
2653 if (mov_default_parse_table[i].type == a.type) {
2654 parse = mov_default_parse_table[i].parse;
2658 // container is user data
2659 if (!parse && (atom.type == MKTAG('u','d','t','a') ||
2660 atom.type == MKTAG('i','l','s','t')))
2661 parse = mov_read_udta_string;
2663 if (!parse) { /* skip leaf atoms data */
2664 avio_skip(pb, a.size);
2666 int64_t start_pos = avio_tell(pb);
2668 int err = parse(c, pb, a);
2671 if (c->found_moov && c->found_mdat &&
2672 ((!pb->seekable || c->fc->flags & AVFMT_FLAG_IGNIDX) ||
2673 start_pos + a.size == avio_size(pb))) {
2674 if (!pb->seekable || c->fc->flags & AVFMT_FLAG_IGNIDX)
2675 c->next_root_atom = start_pos + a.size;
2678 left = a.size - avio_tell(pb) + start_pos;
2679 if (left > 0) /* skip garbage at atom end */
2680 avio_skip(pb, left);
2681 else if (left < 0) {
2682 av_log(c->fc, AV_LOG_WARNING,
2683 "overread end of atom '%.4s' by %"PRId64" bytes\n",
2684 (char*)&a.type, -left);
2685 avio_seek(pb, left, SEEK_CUR);
2689 total_size += a.size;
2692 if (total_size < atom.size && atom.size < 0x7ffff)
2693 avio_skip(pb, atom.size - total_size);
2698 static int mov_probe(AVProbeData *p)
2700 unsigned int offset;
2704 /* check file header */
2707 /* ignore invalid offset */
2708 if ((offset + 8) > (unsigned int)p->buf_size)
2710 tag = AV_RL32(p->buf + offset + 4);
2712 /* check for obvious tags */
2713 case MKTAG('j','P',' ',' '): /* jpeg 2000 signature */
2714 case MKTAG('m','o','o','v'):
2715 case MKTAG('m','d','a','t'):
2716 case MKTAG('p','n','o','t'): /* detect movs with preview pics like ew.mov and april.mov */
2717 case MKTAG('u','d','t','a'): /* Packet Video PVAuthor adds this and a lot of more junk */
2718 case MKTAG('f','t','y','p'):
2719 return AVPROBE_SCORE_MAX;
2720 /* those are more common words, so rate then a bit less */
2721 case MKTAG('e','d','i','w'): /* xdcam files have reverted first tags */
2722 case MKTAG('w','i','d','e'):
2723 case MKTAG('f','r','e','e'):
2724 case MKTAG('j','u','n','k'):
2725 case MKTAG('p','i','c','t'):
2726 return AVPROBE_SCORE_MAX - 5;
2727 case MKTAG(0x82,0x82,0x7f,0x7d):
2728 case MKTAG('s','k','i','p'):
2729 case MKTAG('u','u','i','d'):
2730 case MKTAG('p','r','f','l'):
2731 offset = AV_RB32(p->buf+offset) + offset;
2732 /* if we only find those cause probedata is too small at least rate them */
2733 score = AVPROBE_SCORE_EXTENSION;
2736 /* unrecognized tag */
2742 // must be done after parsing all trak because there's no order requirement
2743 static void mov_read_chapters(AVFormatContext *s)
2745 MOVContext *mov = s->priv_data;
2746 AVStream *st = NULL;
2747 MOVStreamContext *sc;
2751 for (i = 0; i < s->nb_streams; i++)
2752 if (s->streams[i]->id == mov->chapter_track) {
2757 av_log(s, AV_LOG_ERROR, "Referenced QT chapter track not found\n");
2761 st->discard = AVDISCARD_ALL;
2763 cur_pos = avio_tell(sc->pb);
2765 for (i = 0; i < st->nb_index_entries; i++) {
2766 AVIndexEntry *sample = &st->index_entries[i];
2767 int64_t end = i+1 < st->nb_index_entries ? st->index_entries[i+1].timestamp : st->duration;
2772 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
2773 av_log(s, AV_LOG_ERROR, "Chapter %d not found in file\n", i);
2777 // the first two bytes are the length of the title
2778 len = avio_rb16(sc->pb);
2779 if (len > sample->size-2)
2781 title_len = 2*len + 1;
2782 if (!(title = av_mallocz(title_len)))
2785 // The samples could theoretically be in any encoding if there's an encd
2786 // atom following, but in practice are only utf-8 or utf-16, distinguished
2787 // instead by the presence of a BOM
2791 ch = avio_rb16(sc->pb);
2793 avio_get_str16be(sc->pb, len, title, title_len);
2794 else if (ch == 0xfffe)
2795 avio_get_str16le(sc->pb, len, title, title_len);
2798 if (len == 1 || len == 2)
2801 avio_get_str(sc->pb, len - 2, title + 2, title_len - 2);
2805 avpriv_new_chapter(s, i, st->time_base, sample->timestamp, end, title);
2809 avio_seek(sc->pb, cur_pos, SEEK_SET);
2812 static int mov_read_close(AVFormatContext *s)
2814 MOVContext *mov = s->priv_data;
2817 for (i = 0; i < s->nb_streams; i++) {
2818 AVStream *st = s->streams[i];
2819 MOVStreamContext *sc = st->priv_data;
2821 av_freep(&sc->ctts_data);
2822 for (j = 0; j < sc->drefs_count; j++) {
2823 av_freep(&sc->drefs[j].path);
2824 av_freep(&sc->drefs[j].dir);
2826 av_freep(&sc->drefs);
2827 if (sc->pb && sc->pb != s->pb)
2830 av_freep(&sc->chunk_offsets);
2831 av_freep(&sc->stsc_data);
2832 av_freep(&sc->sample_sizes);
2833 av_freep(&sc->keyframes);
2834 av_freep(&sc->stts_data);
2835 av_freep(&sc->stps_data);
2836 av_freep(&sc->rap_group);
2839 if (mov->dv_demux) {
2840 for (i = 0; i < mov->dv_fctx->nb_streams; i++) {
2841 av_freep(&mov->dv_fctx->streams[i]->codec);
2842 av_freep(&mov->dv_fctx->streams[i]);
2844 av_freep(&mov->dv_fctx);
2845 av_freep(&mov->dv_demux);
2848 av_freep(&mov->trex_data);
2853 static int mov_read_header(AVFormatContext *s)
2855 MOVContext *mov = s->priv_data;
2856 AVIOContext *pb = s->pb;
2858 MOVAtom atom = { AV_RL32("root") };
2861 /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
2863 atom.size = avio_size(pb);
2865 atom.size = INT64_MAX;
2867 /* check MOV header */
2868 if ((err = mov_read_default(mov, pb, atom)) < 0) {
2869 av_log(s, AV_LOG_ERROR, "error reading header: %d\n", err);
2873 if (!mov->found_moov) {
2874 av_log(s, AV_LOG_ERROR, "moov atom not found\n");
2876 return AVERROR_INVALIDDATA;
2878 av_dlog(mov->fc, "on_parse_exit_offset=%"PRId64"\n", avio_tell(pb));
2880 if (pb->seekable && mov->chapter_track > 0)
2881 mov_read_chapters(s);
2883 if (mov->trex_data) {
2885 for (i = 0; i < s->nb_streams; i++) {
2886 AVStream *st = s->streams[i];
2887 MOVStreamContext *sc = st->priv_data;
2888 if (st->duration > 0)
2889 st->codec->bit_rate = sc->data_size * 8 * sc->time_scale / st->duration;
2896 static AVIndexEntry *mov_find_next_sample(AVFormatContext *s, AVStream **st)
2898 AVIndexEntry *sample = NULL;
2899 int64_t best_dts = INT64_MAX;
2901 for (i = 0; i < s->nb_streams; i++) {
2902 AVStream *avst = s->streams[i];
2903 MOVStreamContext *msc = avst->priv_data;
2904 if (msc->pb && msc->current_sample < avst->nb_index_entries) {
2905 AVIndexEntry *current_sample = &avst->index_entries[msc->current_sample];
2906 int64_t dts = av_rescale(current_sample->timestamp, AV_TIME_BASE, msc->time_scale);
2907 av_dlog(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
2908 if (!sample || (!s->pb->seekable && current_sample->pos < sample->pos) ||
2910 ((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb &&
2911 ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
2912 (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) {
2913 sample = current_sample;
2922 static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
2924 MOVContext *mov = s->priv_data;
2925 MOVStreamContext *sc;
2926 AVIndexEntry *sample;
2927 AVStream *st = NULL;
2930 sample = mov_find_next_sample(s, &st);
2932 mov->found_mdat = 0;
2933 if (!mov->next_root_atom)
2935 avio_seek(s->pb, mov->next_root_atom, SEEK_SET);
2936 mov->next_root_atom = 0;
2937 if (mov_read_default(mov, s->pb, (MOVAtom){ AV_RL32("root"), INT64_MAX }) < 0 ||
2940 av_dlog(s, "read fragments, offset 0x%"PRIx64"\n", avio_tell(s->pb));
2944 /* must be done just before reading, to avoid infinite loop on sample */
2945 sc->current_sample++;
2947 if (st->discard != AVDISCARD_ALL) {
2948 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
2949 av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
2950 sc->ffindex, sample->pos);
2951 return AVERROR_INVALIDDATA;
2953 ret = av_get_packet(sc->pb, pkt, sample->size);
2956 if (sc->has_palette) {
2959 pal = av_packet_new_side_data(pkt, AV_PKT_DATA_PALETTE, AVPALETTE_SIZE);
2961 av_log(mov->fc, AV_LOG_ERROR, "Cannot append palette to packet\n");
2963 memcpy(pal, sc->palette, AVPALETTE_SIZE);
2964 sc->has_palette = 0;
2967 #if CONFIG_DV_DEMUXER
2968 if (mov->dv_demux && sc->dv_audio_container) {
2969 avpriv_dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size);
2972 ret = avpriv_dv_get_packet(mov->dv_demux, pkt);
2979 pkt->stream_index = sc->ffindex;
2980 pkt->dts = sample->timestamp;
2981 if (sc->ctts_data && sc->ctts_index < sc->ctts_count) {
2982 pkt->pts = pkt->dts + sc->dts_shift + sc->ctts_data[sc->ctts_index].duration;
2983 /* update ctts context */
2985 if (sc->ctts_index < sc->ctts_count &&
2986 sc->ctts_data[sc->ctts_index].count == sc->ctts_sample) {
2988 sc->ctts_sample = 0;
2991 pkt->dts = AV_NOPTS_VALUE;
2993 int64_t next_dts = (sc->current_sample < st->nb_index_entries) ?
2994 st->index_entries[sc->current_sample].timestamp : st->duration;
2995 pkt->duration = next_dts - pkt->dts;
2996 pkt->pts = pkt->dts;
2998 if (st->discard == AVDISCARD_ALL)
3000 pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? AV_PKT_FLAG_KEY : 0;
3001 pkt->pos = sample->pos;
3002 av_dlog(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n",
3003 pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
3007 static int mov_seek_stream(AVFormatContext *s, AVStream *st, int64_t timestamp, int flags)
3009 MOVStreamContext *sc = st->priv_data;
3010 int sample, time_sample;
3013 sample = av_index_search_timestamp(st, timestamp, flags);
3014 av_dlog(s, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
3015 if (sample < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
3017 if (sample < 0) /* not sure what to do */
3018 return AVERROR_INVALIDDATA;
3019 sc->current_sample = sample;
3020 av_dlog(s, "stream %d, found sample %d\n", st->index, sc->current_sample);
3021 /* adjust ctts index */
3022 if (sc->ctts_data) {
3024 for (i = 0; i < sc->ctts_count; i++) {
3025 int next = time_sample + sc->ctts_data[i].count;
3026 if (next > sc->current_sample) {
3028 sc->ctts_sample = sc->current_sample - time_sample;
3037 static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
3040 int64_t seek_timestamp, timestamp;
3044 if (stream_index >= s->nb_streams)
3045 return AVERROR_INVALIDDATA;
3046 if (sample_time < 0)
3049 st = s->streams[stream_index];
3050 sample = mov_seek_stream(s, st, sample_time, flags);
3054 /* adjust seek timestamp to found sample timestamp */
3055 seek_timestamp = st->index_entries[sample].timestamp;
3057 for (i = 0; i < s->nb_streams; i++) {
3059 if (stream_index == i)
3062 timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
3063 mov_seek_stream(s, st, timestamp, flags);
3068 AVInputFormat ff_mov_demuxer = {
3069 .name = "mov,mp4,m4a,3gp,3g2,mj2",
3070 .long_name = NULL_IF_CONFIG_SMALL("QuickTime / MOV"),
3071 .priv_data_size = sizeof(MOVContext),
3072 .read_probe = mov_probe,
3073 .read_header = mov_read_header,
3074 .read_packet = mov_read_packet,
3075 .read_close = mov_read_close,
3076 .read_seek = mov_read_seek,