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
30 #include "libavutil/attributes.h"
31 #include "libavutil/channel_layout.h"
32 #include "libavutil/intreadwrite.h"
33 #include "libavutil/intfloat.h"
34 #include "libavutil/mathematics.h"
35 #include "libavutil/time_internal.h"
36 #include "libavutil/avstring.h"
37 #include "libavutil/dict.h"
38 #include "libavutil/opt.h"
39 #include "libavcodec/ac3tab.h"
42 #include "avio_internal.h"
45 #include "libavcodec/get_bits.h"
48 #include "replaygain.h"
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 c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
84 av_dict_set(&c->fc->metadata, key, buf, 0);
89 static int mov_metadata_int8_bypass_padding(MOVContext *c, AVIOContext *pb,
90 unsigned len, const char *key)
94 /* bypass padding bytes */
99 snprintf(buf, sizeof(buf), "%d", avio_r8(pb));
100 c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
101 av_dict_set(&c->fc->metadata, key, buf, 0);
106 static int mov_metadata_int8_no_padding(MOVContext *c, AVIOContext *pb,
107 unsigned len, const char *key)
111 snprintf(buf, sizeof(buf), "%d", avio_r8(pb));
112 c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
113 av_dict_set(&c->fc->metadata, key, buf, 0);
118 static int mov_metadata_gnre(MOVContext *c, AVIOContext *pb,
119 unsigned len, const char *key)
124 avio_r8(pb); // unknown
127 if (genre < 1 || genre > ID3v1_GENRE_MAX)
129 snprintf(buf, sizeof(buf), "%s", ff_id3v1_genre_str[genre-1]);
130 c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
131 av_dict_set(&c->fc->metadata, key, buf, 0);
136 static const uint32_t mac_to_unicode[128] = {
137 0x00C4,0x00C5,0x00C7,0x00C9,0x00D1,0x00D6,0x00DC,0x00E1,
138 0x00E0,0x00E2,0x00E4,0x00E3,0x00E5,0x00E7,0x00E9,0x00E8,
139 0x00EA,0x00EB,0x00ED,0x00EC,0x00EE,0x00EF,0x00F1,0x00F3,
140 0x00F2,0x00F4,0x00F6,0x00F5,0x00FA,0x00F9,0x00FB,0x00FC,
141 0x2020,0x00B0,0x00A2,0x00A3,0x00A7,0x2022,0x00B6,0x00DF,
142 0x00AE,0x00A9,0x2122,0x00B4,0x00A8,0x2260,0x00C6,0x00D8,
143 0x221E,0x00B1,0x2264,0x2265,0x00A5,0x00B5,0x2202,0x2211,
144 0x220F,0x03C0,0x222B,0x00AA,0x00BA,0x03A9,0x00E6,0x00F8,
145 0x00BF,0x00A1,0x00AC,0x221A,0x0192,0x2248,0x2206,0x00AB,
146 0x00BB,0x2026,0x00A0,0x00C0,0x00C3,0x00D5,0x0152,0x0153,
147 0x2013,0x2014,0x201C,0x201D,0x2018,0x2019,0x00F7,0x25CA,
148 0x00FF,0x0178,0x2044,0x20AC,0x2039,0x203A,0xFB01,0xFB02,
149 0x2021,0x00B7,0x201A,0x201E,0x2030,0x00C2,0x00CA,0x00C1,
150 0x00CB,0x00C8,0x00CD,0x00CE,0x00CF,0x00CC,0x00D3,0x00D4,
151 0xF8FF,0x00D2,0x00DA,0x00DB,0x00D9,0x0131,0x02C6,0x02DC,
152 0x00AF,0x02D8,0x02D9,0x02DA,0x00B8,0x02DD,0x02DB,0x02C7,
155 static int mov_read_mac_string(MOVContext *c, AVIOContext *pb, int len,
156 char *dst, int dstlen)
159 char *end = dst+dstlen-1;
162 for (i = 0; i < len; i++) {
163 uint8_t t, c = avio_r8(pb);
164 if (c < 0x80 && p < end)
167 PUT_UTF8(mac_to_unicode[c-0x80], t, if (p < end) *p++ = t;);
173 static int mov_read_covr(MOVContext *c, AVIOContext *pb, int type, int len)
177 MOVStreamContext *sc;
182 case 0xd: id = AV_CODEC_ID_MJPEG; break;
183 case 0xe: id = AV_CODEC_ID_PNG; break;
184 case 0x1b: id = AV_CODEC_ID_BMP; break;
186 av_log(c->fc, AV_LOG_WARNING, "Unknown cover type: 0x%x.\n", type);
191 st = avformat_new_stream(c->fc, NULL);
193 return AVERROR(ENOMEM);
194 sc = av_mallocz(sizeof(*sc));
196 return AVERROR(ENOMEM);
199 ret = av_get_packet(pb, &pkt, len);
203 st->disposition |= AV_DISPOSITION_ATTACHED_PIC;
205 st->attached_pic = pkt;
206 st->attached_pic.stream_index = st->index;
207 st->attached_pic.flags |= AV_PKT_FLAG_KEY;
209 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
210 st->codec->codec_id = id;
215 static int mov_metadata_loci(MOVContext *c, AVIOContext *pb, unsigned len)
217 char language[4] = { 0 };
219 uint16_t langcode = 0;
220 double longitude, latitude;
221 const char *key = "location";
223 if (len < 4 + 2 + 1 + 1 + 4 + 4 + 4)
224 return AVERROR_INVALIDDATA;
226 avio_skip(pb, 4); // version+flags
227 langcode = avio_rb16(pb);
228 ff_mov_lang_to_iso639(langcode, language);
231 len -= avio_get_str(pb, len, buf, sizeof(buf)); // place name
233 return AVERROR_INVALIDDATA;
234 avio_skip(pb, 1); // role
238 return AVERROR_INVALIDDATA;
239 longitude = ((int32_t) avio_rb32(pb)) / (float) (1 << 16);
240 latitude = ((int32_t) avio_rb32(pb)) / (float) (1 << 16);
242 // Try to output in the same format as the ?xyz field
243 snprintf(buf, sizeof(buf), "%+08.4f%+09.4f/", latitude, longitude);
244 if (*language && strcmp(language, "und")) {
246 snprintf(key2, sizeof(key2), "%s-%s", key, language);
247 av_dict_set(&c->fc->metadata, key2, buf, 0);
249 c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
250 return av_dict_set(&c->fc->metadata, key, buf, 0);
253 static int mov_read_udta_string(MOVContext *c, AVIOContext *pb, MOVAtom atom)
256 char *str, key2[32], language[4] = {0};
257 const char *key = NULL;
258 uint16_t langcode = 0;
259 uint32_t data_type = 0, str_size, str_size_alloc;
260 int (*parse)(MOVContext*, AVIOContext*, unsigned, const char*) = NULL;
264 case MKTAG( '@','P','R','M'): key = "premiere_version"; raw = 1; break;
265 case MKTAG( '@','P','R','Q'): key = "quicktime_version"; raw = 1; break;
266 case MKTAG( 'X','M','P','_'):
267 if (c->export_xmp) { key = "xmp"; raw = 1; } break;
268 case MKTAG( 'a','A','R','T'): key = "album_artist"; break;
269 case MKTAG( 'a','k','I','D'): key = "account_type";
270 parse = mov_metadata_int8_no_padding; break;
271 case MKTAG( 'a','p','I','D'): key = "account_id"; break;
272 case MKTAG( 'c','a','t','g'): key = "category"; break;
273 case MKTAG( 'c','p','i','l'): key = "compilation";
274 parse = mov_metadata_int8_no_padding; break;
275 case MKTAG( 'c','p','r','t'): key = "copyright"; break;
276 case MKTAG( 'd','e','s','c'): key = "description"; break;
277 case MKTAG( 'd','i','s','k'): key = "disc";
278 parse = mov_metadata_track_or_disc_number; break;
279 case MKTAG( 'e','g','i','d'): key = "episode_uid";
280 parse = mov_metadata_int8_no_padding; break;
281 case MKTAG( 'g','n','r','e'): key = "genre";
282 parse = mov_metadata_gnre; break;
283 case MKTAG( 'h','d','v','d'): key = "hd_video";
284 parse = mov_metadata_int8_no_padding; break;
285 case MKTAG( 'k','e','y','w'): key = "keywords"; break;
286 case MKTAG( 'l','d','e','s'): key = "synopsis"; break;
287 case MKTAG( 'l','o','c','i'):
288 return mov_metadata_loci(c, pb, atom.size);
289 case MKTAG( 'p','c','s','t'): key = "podcast";
290 parse = mov_metadata_int8_no_padding; break;
291 case MKTAG( 'p','g','a','p'): key = "gapless_playback";
292 parse = mov_metadata_int8_no_padding; break;
293 case MKTAG( 'p','u','r','d'): key = "purchase_date"; break;
294 case MKTAG( 'r','t','n','g'): key = "rating";
295 parse = mov_metadata_int8_no_padding; break;
296 case MKTAG( 's','o','a','a'): key = "sort_album_artist"; break;
297 case MKTAG( 's','o','a','l'): key = "sort_album"; break;
298 case MKTAG( 's','o','a','r'): key = "sort_artist"; break;
299 case MKTAG( 's','o','c','o'): key = "sort_composer"; break;
300 case MKTAG( 's','o','n','m'): key = "sort_name"; break;
301 case MKTAG( 's','o','s','n'): key = "sort_show"; break;
302 case MKTAG( 's','t','i','k'): key = "media_type";
303 parse = mov_metadata_int8_no_padding; break;
304 case MKTAG( 't','r','k','n'): key = "track";
305 parse = mov_metadata_track_or_disc_number; break;
306 case MKTAG( 't','v','e','n'): key = "episode_id"; break;
307 case MKTAG( 't','v','e','s'): key = "episode_sort";
308 parse = mov_metadata_int8_bypass_padding; break;
309 case MKTAG( 't','v','n','n'): key = "network"; break;
310 case MKTAG( 't','v','s','h'): key = "show"; break;
311 case MKTAG( 't','v','s','n'): key = "season_number";
312 parse = mov_metadata_int8_bypass_padding; break;
313 case MKTAG(0xa9,'A','R','T'): key = "artist"; break;
314 case MKTAG(0xa9,'P','R','D'): key = "producer"; break;
315 case MKTAG(0xa9,'a','l','b'): key = "album"; break;
316 case MKTAG(0xa9,'a','u','t'): key = "artist"; break;
317 case MKTAG(0xa9,'c','h','p'): key = "chapter"; break;
318 case MKTAG(0xa9,'c','m','t'): key = "comment"; break;
319 case MKTAG(0xa9,'c','o','m'): key = "composer"; break;
320 case MKTAG(0xa9,'c','p','y'): key = "copyright"; break;
321 case MKTAG(0xa9,'d','a','y'): key = "date"; break;
322 case MKTAG(0xa9,'d','i','r'): key = "director"; break;
323 case MKTAG(0xa9,'d','i','s'): key = "disclaimer"; break;
324 case MKTAG(0xa9,'e','d','1'): key = "edit_date"; break;
325 case MKTAG(0xa9,'e','n','c'): key = "encoder"; break;
326 case MKTAG(0xa9,'f','m','t'): key = "original_format"; break;
327 case MKTAG(0xa9,'g','e','n'): key = "genre"; break;
328 case MKTAG(0xa9,'g','r','p'): key = "grouping"; break;
329 case MKTAG(0xa9,'h','s','t'): key = "host_computer"; break;
330 case MKTAG(0xa9,'i','n','f'): key = "comment"; break;
331 case MKTAG(0xa9,'l','y','r'): key = "lyrics"; break;
332 case MKTAG(0xa9,'m','a','k'): key = "make"; break;
333 case MKTAG(0xa9,'m','o','d'): key = "model"; break;
334 case MKTAG(0xa9,'n','a','m'): key = "title"; break;
335 case MKTAG(0xa9,'o','p','e'): key = "original_artist"; break;
336 case MKTAG(0xa9,'p','r','d'): key = "producer"; break;
337 case MKTAG(0xa9,'p','r','f'): key = "performers"; break;
338 case MKTAG(0xa9,'r','e','q'): key = "playback_requirements"; break;
339 case MKTAG(0xa9,'s','r','c'): key = "original_source"; break;
340 case MKTAG(0xa9,'s','t','3'): key = "subtitle"; break;
341 case MKTAG(0xa9,'s','w','r'): key = "encoder"; break;
342 case MKTAG(0xa9,'t','o','o'): key = "encoder"; break;
343 case MKTAG(0xa9,'t','r','k'): key = "track"; break;
344 case MKTAG(0xa9,'u','r','l'): key = "URL"; break;
345 case MKTAG(0xa9,'w','r','n'): key = "warning"; break;
346 case MKTAG(0xa9,'w','r','t'): key = "composer"; break;
347 case MKTAG(0xa9,'x','y','z'): key = "location"; break;
350 if (c->itunes_metadata && atom.size > 8) {
351 int data_size = avio_rb32(pb);
352 int tag = avio_rl32(pb);
353 if (tag == MKTAG('d','a','t','a')) {
354 data_type = avio_rb32(pb); // type
355 avio_rb32(pb); // unknown
356 str_size = data_size - 16;
359 if (atom.type == MKTAG('c', 'o', 'v', 'r')) {
360 int ret = mov_read_covr(c, pb, data_type, str_size);
362 av_log(c->fc, AV_LOG_ERROR, "Error parsing cover art.\n");
367 } else if (atom.size > 4 && key && !c->itunes_metadata && !raw) {
368 str_size = avio_rb16(pb); // string length
369 langcode = avio_rb16(pb);
370 ff_mov_lang_to_iso639(langcode, language);
373 str_size = atom.size;
375 if (c->export_all && !key) {
376 snprintf(tmp_key, 5, "%.4s", (char*)&atom.type);
383 return AVERROR_INVALIDDATA;
385 // allocate twice as much as worst-case
386 str_size_alloc = (raw ? str_size : str_size * 2) + 1;
387 str = av_malloc(str_size_alloc);
389 return AVERROR(ENOMEM);
392 parse(c, pb, str_size, key);
394 if (!raw && (data_type == 3 || (data_type == 0 && (langcode < 0x400 || langcode == 0x7fff)))) { // MAC Encoded
395 mov_read_mac_string(c, pb, str_size, str, str_size_alloc);
397 int ret = ffio_read_size(pb, str, str_size);
404 c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
405 av_dict_set(&c->fc->metadata, key, str, 0);
406 if (*language && strcmp(language, "und")) {
407 snprintf(key2, sizeof(key2), "%s-%s", key, language);
408 av_dict_set(&c->fc->metadata, key2, str, 0);
411 av_log(c->fc, AV_LOG_TRACE, "lang \"%3s\" ", language);
412 av_log(c->fc, AV_LOG_TRACE, "tag \"%s\" value \"%s\" atom \"%.4s\" %d %"PRId64"\n",
413 key, str, (char*)&atom.type, str_size_alloc, atom.size);
419 static int mov_read_chpl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
422 int i, nb_chapters, str_len, version;
426 if ((atom.size -= 5) < 0)
429 version = avio_r8(pb);
432 avio_rb32(pb); // ???
433 nb_chapters = avio_r8(pb);
435 for (i = 0; i < nb_chapters; i++) {
439 start = avio_rb64(pb);
440 str_len = avio_r8(pb);
442 if ((atom.size -= 9+str_len) < 0)
445 ret = ffio_read_size(pb, str, str_len);
449 avpriv_new_chapter(c->fc, i, (AVRational){1,10000000}, start, AV_NOPTS_VALUE, str);
454 #define MIN_DATA_ENTRY_BOX_SIZE 12
455 static int mov_read_dref(MOVContext *c, AVIOContext *pb, MOVAtom atom)
458 MOVStreamContext *sc;
461 if (c->fc->nb_streams < 1)
463 st = c->fc->streams[c->fc->nb_streams-1];
466 avio_rb32(pb); // version + flags
467 entries = avio_rb32(pb);
468 if (entries > (atom.size - 1) / MIN_DATA_ENTRY_BOX_SIZE + 1 ||
469 entries >= UINT_MAX / sizeof(*sc->drefs))
470 return AVERROR_INVALIDDATA;
472 sc->drefs = av_mallocz(entries * sizeof(*sc->drefs));
474 return AVERROR(ENOMEM);
475 sc->drefs_count = entries;
477 for (i = 0; i < sc->drefs_count; i++) {
478 MOVDref *dref = &sc->drefs[i];
479 uint32_t size = avio_rb32(pb);
480 int64_t next = avio_tell(pb) + size - 4;
483 return AVERROR_INVALIDDATA;
485 dref->type = avio_rl32(pb);
486 avio_rb32(pb); // version + flags
487 av_log(c->fc, AV_LOG_TRACE, "type %.4s size %d\n", (char*)&dref->type, size);
489 if (dref->type == MKTAG('a','l','i','s') && size > 150) {
490 /* macintosh alias record */
491 uint16_t volume_len, len;
497 volume_len = avio_r8(pb);
498 volume_len = FFMIN(volume_len, 27);
499 ret = ffio_read_size(pb, dref->volume, 27);
502 dref->volume[volume_len] = 0;
503 av_log(c->fc, AV_LOG_DEBUG, "volume %s, len %d\n", dref->volume, volume_len);
508 len = FFMIN(len, 63);
509 ret = ffio_read_size(pb, dref->filename, 63);
512 dref->filename[len] = 0;
513 av_log(c->fc, AV_LOG_DEBUG, "filename %s, len %d\n", dref->filename, len);
517 /* read next level up_from_alias/down_to_target */
518 dref->nlvl_from = avio_rb16(pb);
519 dref->nlvl_to = avio_rb16(pb);
520 av_log(c->fc, AV_LOG_DEBUG, "nlvl from %d, nlvl to %d\n",
521 dref->nlvl_from, dref->nlvl_to);
525 for (type = 0; type != -1 && avio_tell(pb) < next; ) {
528 type = avio_rb16(pb);
530 av_log(c->fc, AV_LOG_DEBUG, "type %d, len %d\n", type, len);
533 if (type == 2 || type == 18) { // absolute path
535 dref->path = av_mallocz(len+1);
537 return AVERROR(ENOMEM);
539 ret = ffio_read_size(pb, dref->path, len);
541 av_freep(&dref->path);
544 if (type == 18) // no additional processing needed
546 if (len > volume_len && !strncmp(dref->path, dref->volume, volume_len)) {
548 memmove(dref->path, dref->path+volume_len, len);
551 for (j = 0; j < len; j++)
552 if (dref->path[j] == ':')
554 av_log(c->fc, AV_LOG_DEBUG, "path %s\n", dref->path);
555 } else if (type == 0) { // directory name
557 dref->dir = av_malloc(len+1);
559 return AVERROR(ENOMEM);
561 ret = ffio_read_size(pb, dref->dir, len);
563 av_freep(&dref->dir);
567 for (j = 0; j < len; j++)
568 if (dref->dir[j] == ':')
570 av_log(c->fc, AV_LOG_DEBUG, "dir %s\n", dref->dir);
575 avio_seek(pb, next, SEEK_SET);
580 static int mov_read_hdlr(MOVContext *c, AVIOContext *pb, MOVAtom atom)
584 uint32_t av_unused ctype;
589 if (c->fc->nb_streams < 1) // meta before first trak
592 st = c->fc->streams[c->fc->nb_streams-1];
594 avio_r8(pb); /* version */
595 avio_rb24(pb); /* flags */
598 ctype = avio_rl32(pb);
599 type = avio_rl32(pb); /* component subtype */
601 av_log(c->fc, AV_LOG_TRACE, "ctype= %.4s (0x%08x)\n", (char*)&ctype, ctype);
602 av_log(c->fc, AV_LOG_TRACE, "stype= %.4s\n", (char*)&type);
604 if (type == MKTAG('v','i','d','e'))
605 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
606 else if (type == MKTAG('s','o','u','n'))
607 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
608 else if (type == MKTAG('m','1','a',' '))
609 st->codec->codec_id = AV_CODEC_ID_MP2;
610 else if ((type == MKTAG('s','u','b','p')) || (type == MKTAG('c','l','c','p')))
611 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
613 avio_rb32(pb); /* component manufacture */
614 avio_rb32(pb); /* component flags */
615 avio_rb32(pb); /* component flags mask */
617 title_size = atom.size - 24;
618 if (title_size > 0) {
619 title_str = av_malloc(title_size + 1); /* Add null terminator */
621 return AVERROR(ENOMEM);
623 ret = ffio_read_size(pb, title_str, title_size);
625 av_freep(&title_str);
628 title_str[title_size] = 0;
630 int off = (!c->isom && title_str[0] == title_size - 1);
631 av_dict_set(&st->metadata, "handler_name", title_str + off, 0);
633 av_freep(&title_str);
639 int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb)
644 if (fc->nb_streams < 1)
646 st = fc->streams[fc->nb_streams-1];
648 avio_rb32(pb); /* version + flags */
649 ff_mp4_read_descr(fc, pb, &tag);
650 if (tag == MP4ESDescrTag) {
651 ff_mp4_parse_es_descr(pb, NULL);
653 avio_rb16(pb); /* ID */
655 ff_mp4_read_descr(fc, pb, &tag);
656 if (tag == MP4DecConfigDescrTag)
657 ff_mp4_read_dec_config_descr(fc, st, pb);
661 static int mov_read_esds(MOVContext *c, AVIOContext *pb, MOVAtom atom)
663 return ff_mov_read_esds(c->fc, pb);
666 static int mov_read_dac3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
669 enum AVAudioServiceType *ast;
670 int ac3info, acmod, lfeon, bsmod;
672 if (c->fc->nb_streams < 1)
674 st = c->fc->streams[c->fc->nb_streams-1];
676 ast = (enum AVAudioServiceType*)ff_stream_new_side_data(st, AV_PKT_DATA_AUDIO_SERVICE_TYPE,
679 return AVERROR(ENOMEM);
681 ac3info = avio_rb24(pb);
682 bsmod = (ac3info >> 14) & 0x7;
683 acmod = (ac3info >> 11) & 0x7;
684 lfeon = (ac3info >> 10) & 0x1;
685 st->codec->channels = ((int[]){2,1,2,3,3,4,4,5})[acmod] + lfeon;
686 st->codec->channel_layout = avpriv_ac3_channel_layout_tab[acmod];
688 st->codec->channel_layout |= AV_CH_LOW_FREQUENCY;
690 if (st->codec->channels > 1 && bsmod == 0x7)
691 *ast = AV_AUDIO_SERVICE_TYPE_KARAOKE;
693 st->codec->audio_service_type = *ast;
698 static int mov_read_dec3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
701 enum AVAudioServiceType *ast;
702 int eac3info, acmod, lfeon, bsmod;
704 if (c->fc->nb_streams < 1)
706 st = c->fc->streams[c->fc->nb_streams-1];
708 ast = (enum AVAudioServiceType*)ff_stream_new_side_data(st, AV_PKT_DATA_AUDIO_SERVICE_TYPE,
711 return AVERROR(ENOMEM);
713 /* No need to parse fields for additional independent substreams and its
714 * associated dependent substreams since libavcodec's E-AC-3 decoder
715 * does not support them yet. */
716 avio_rb16(pb); /* data_rate and num_ind_sub */
717 eac3info = avio_rb24(pb);
718 bsmod = (eac3info >> 12) & 0x1f;
719 acmod = (eac3info >> 9) & 0x7;
720 lfeon = (eac3info >> 8) & 0x1;
721 st->codec->channel_layout = avpriv_ac3_channel_layout_tab[acmod];
723 st->codec->channel_layout |= AV_CH_LOW_FREQUENCY;
724 st->codec->channels = av_get_channel_layout_nb_channels(st->codec->channel_layout);
726 if (st->codec->channels > 1 && bsmod == 0x7)
727 *ast = AV_AUDIO_SERVICE_TYPE_KARAOKE;
729 st->codec->audio_service_type = *ast;
734 static int mov_read_chan(MOVContext *c, AVIOContext *pb, MOVAtom atom)
738 if (c->fc->nb_streams < 1)
740 st = c->fc->streams[c->fc->nb_streams-1];
745 /* skip version and flags */
748 ff_mov_read_chan(c->fc, pb, st, atom.size - 4);
753 static int mov_read_wfex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
757 if (c->fc->nb_streams < 1)
759 st = c->fc->streams[c->fc->nb_streams-1];
761 return ff_get_wav_header(c->fc, pb, st->codec, atom.size);
764 static int mov_read_pasp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
766 const int num = avio_rb32(pb);
767 const int den = avio_rb32(pb);
770 if (c->fc->nb_streams < 1)
772 st = c->fc->streams[c->fc->nb_streams-1];
774 if ((st->sample_aspect_ratio.den != 1 || st->sample_aspect_ratio.num) && // default
775 (den != st->sample_aspect_ratio.den || num != st->sample_aspect_ratio.num)) {
776 av_log(c->fc, AV_LOG_WARNING,
777 "sample aspect ratio already set to %d:%d, ignoring 'pasp' atom (%d:%d)\n",
778 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
780 } else if (den != 0) {
781 st->sample_aspect_ratio.num = num;
782 st->sample_aspect_ratio.den = den;
787 /* this atom contains actual media data */
788 static int mov_read_mdat(MOVContext *c, AVIOContext *pb, MOVAtom atom)
790 if (atom.size == 0) /* wrong one (MP4) */
793 return 0; /* now go for moov */
796 /* read major brand, minor version and compatible brands and store them as metadata */
797 static int mov_read_ftyp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
801 char minor_ver_str[11]; /* 32 bit integer -> 10 digits + null */
802 char* comp_brands_str;
803 uint8_t type[5] = {0};
804 int ret = ffio_read_size(pb, type, 4);
808 if (strcmp(type, "qt "))
810 av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
811 av_dict_set(&c->fc->metadata, "major_brand", type, 0);
812 minor_ver = avio_rb32(pb); /* minor version */
813 snprintf(minor_ver_str, sizeof(minor_ver_str), "%"PRIu32"", minor_ver);
814 av_dict_set(&c->fc->metadata, "minor_version", minor_ver_str, 0);
816 comp_brand_size = atom.size - 8;
817 if (comp_brand_size < 0)
818 return AVERROR_INVALIDDATA;
819 comp_brands_str = av_malloc(comp_brand_size + 1); /* Add null terminator */
820 if (!comp_brands_str)
821 return AVERROR(ENOMEM);
823 ret = ffio_read_size(pb, comp_brands_str, comp_brand_size);
825 av_freep(&comp_brands_str);
828 comp_brands_str[comp_brand_size] = 0;
829 av_dict_set(&c->fc->metadata, "compatible_brands", comp_brands_str, 0);
830 av_freep(&comp_brands_str);
835 /* this atom should contain all header atoms */
836 static int mov_read_moov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
840 if ((ret = mov_read_default(c, pb, atom)) < 0)
842 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
843 /* so we don't parse the whole file if over a network */
845 return 0; /* now go for mdat */
848 static int mov_read_moof(MOVContext *c, AVIOContext *pb, MOVAtom atom)
850 c->fragment.moof_offset = c->fragment.implicit_offset = avio_tell(pb) - 8;
851 av_log(c->fc, AV_LOG_TRACE, "moof offset %"PRIx64"\n", c->fragment.moof_offset);
852 return mov_read_default(c, pb, atom);
855 static void mov_metadata_creation_time(AVDictionary **metadata, time_t time)
859 struct tm *ptm, tmbuf;
860 time -= 2082844800; /* seconds between 1904-01-01 and Epoch */
861 ptm = gmtime_r(&time, &tmbuf);
863 if (strftime(buffer, sizeof(buffer), "%Y-%m-%d %H:%M:%S", ptm))
864 av_dict_set(metadata, "creation_time", buffer, 0);
868 static int mov_read_mdhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
871 MOVStreamContext *sc;
873 char language[4] = {0};
875 time_t creation_time;
877 if (c->fc->nb_streams < 1)
879 st = c->fc->streams[c->fc->nb_streams-1];
882 if (sc->time_scale) {
883 av_log(c->fc, AV_LOG_ERROR, "Multiple mdhd?\n");
884 return AVERROR_INVALIDDATA;
887 version = avio_r8(pb);
889 avpriv_request_sample(c->fc, "Version %d", version);
890 return AVERROR_PATCHWELCOME;
892 avio_rb24(pb); /* flags */
894 creation_time = avio_rb64(pb);
897 creation_time = avio_rb32(pb);
898 avio_rb32(pb); /* modification time */
900 mov_metadata_creation_time(&st->metadata, creation_time);
902 sc->time_scale = avio_rb32(pb);
903 st->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
905 lang = avio_rb16(pb); /* language */
906 if (ff_mov_lang_to_iso639(lang, language))
907 av_dict_set(&st->metadata, "language", language, 0);
908 avio_rb16(pb); /* quality */
913 static int mov_read_mvhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
915 time_t creation_time;
916 int version = avio_r8(pb); /* version */
917 avio_rb24(pb); /* flags */
920 creation_time = avio_rb64(pb);
923 creation_time = avio_rb32(pb);
924 avio_rb32(pb); /* modification time */
926 mov_metadata_creation_time(&c->fc->metadata, creation_time);
927 c->time_scale = avio_rb32(pb); /* time scale */
929 av_log(c->fc, AV_LOG_TRACE, "time scale = %i\n", c->time_scale);
931 c->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
932 avio_rb32(pb); /* preferred scale */
934 avio_rb16(pb); /* preferred volume */
936 avio_skip(pb, 10); /* reserved */
938 avio_skip(pb, 36); /* display matrix */
940 avio_rb32(pb); /* preview time */
941 avio_rb32(pb); /* preview duration */
942 avio_rb32(pb); /* poster time */
943 avio_rb32(pb); /* selection time */
944 avio_rb32(pb); /* selection duration */
945 avio_rb32(pb); /* current time */
946 avio_rb32(pb); /* next track ID */
951 static int mov_read_smi(MOVContext *c, AVIOContext *pb, MOVAtom atom)
956 if (c->fc->nb_streams < 1)
958 st = c->fc->streams[c->fc->nb_streams-1];
960 if ((uint64_t)atom.size > (1<<30))
961 return AVERROR_INVALIDDATA;
963 // currently SVQ3 decoder expect full STSD header - so let's fake it
964 // this should be fixed and just SMI header should be passed
965 av_free(st->codec->extradata);
966 st->codec->extradata = av_mallocz(atom.size + 0x5a + AV_INPUT_BUFFER_PADDING_SIZE);
967 if (!st->codec->extradata)
968 return AVERROR(ENOMEM);
969 st->codec->extradata_size = 0x5a + atom.size;
970 memcpy(st->codec->extradata, "SVQ3", 4); // fake
972 ret = ffio_read_size(pb, st->codec->extradata + 0x5a, atom.size);
976 av_log(c->fc, AV_LOG_TRACE, "Reading SMI %"PRId64" %s\n", atom.size, st->codec->extradata + 0x5a);
980 static int mov_read_enda(MOVContext *c, AVIOContext *pb, MOVAtom atom)
985 if (c->fc->nb_streams < 1)
987 st = c->fc->streams[c->fc->nb_streams-1];
989 little_endian = !!avio_rb16(pb);
990 av_log(c->fc, AV_LOG_TRACE, "enda %d\n", little_endian);
991 if (little_endian == 1) {
992 switch (st->codec->codec_id) {
993 case AV_CODEC_ID_PCM_S24BE:
994 st->codec->codec_id = AV_CODEC_ID_PCM_S24LE;
996 case AV_CODEC_ID_PCM_S32BE:
997 st->codec->codec_id = AV_CODEC_ID_PCM_S32LE;
999 case AV_CODEC_ID_PCM_F32BE:
1000 st->codec->codec_id = AV_CODEC_ID_PCM_F32LE;
1002 case AV_CODEC_ID_PCM_F64BE:
1003 st->codec->codec_id = AV_CODEC_ID_PCM_F64LE;
1012 static int mov_read_colr(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1015 char color_parameter_type[5] = { 0 };
1016 uint16_t color_primaries, color_trc, color_matrix;
1019 if (c->fc->nb_streams < 1)
1021 st = c->fc->streams[c->fc->nb_streams - 1];
1023 ret = ffio_read_size(pb, color_parameter_type, 4);
1026 if (strncmp(color_parameter_type, "nclx", 4) &&
1027 strncmp(color_parameter_type, "nclc", 4)) {
1028 av_log(c->fc, AV_LOG_WARNING, "unsupported color_parameter_type %s\n",
1029 color_parameter_type);
1033 color_primaries = avio_rb16(pb);
1034 color_trc = avio_rb16(pb);
1035 color_matrix = avio_rb16(pb);
1037 av_log(c->fc, AV_LOG_TRACE,
1038 "%s: pri %"PRIu16" trc %"PRIu16" matrix %"PRIu16"",
1039 color_parameter_type, color_primaries, color_trc, color_matrix);
1041 if (!strncmp(color_parameter_type, "nclx", 4)) {
1042 uint8_t color_range = avio_r8(pb) >> 7;
1043 av_log(c->fc, AV_LOG_TRACE, " full %"PRIu8"", color_range);
1045 st->codec->color_range = AVCOL_RANGE_JPEG;
1047 st->codec->color_range = AVCOL_RANGE_MPEG;
1048 /* 14496-12 references JPEG XR specs (rather than the more complete
1049 * 23001-8) so some adjusting is required */
1050 if (color_primaries >= AVCOL_PRI_FILM)
1051 color_primaries = AVCOL_PRI_UNSPECIFIED;
1052 if ((color_trc >= AVCOL_TRC_LINEAR &&
1053 color_trc <= AVCOL_TRC_LOG_SQRT) ||
1054 color_trc >= AVCOL_TRC_BT2020_10)
1055 color_trc = AVCOL_TRC_UNSPECIFIED;
1056 if (color_matrix >= AVCOL_SPC_BT2020_NCL)
1057 color_matrix = AVCOL_SPC_UNSPECIFIED;
1058 st->codec->color_primaries = color_primaries;
1059 st->codec->color_trc = color_trc;
1060 st->codec->colorspace = color_matrix;
1061 } else if (!strncmp(color_parameter_type, "nclc", 4)) {
1062 /* color primaries, Table 4-4 */
1063 switch (color_primaries) {
1064 case 1: st->codec->color_primaries = AVCOL_PRI_BT709; break;
1065 case 5: st->codec->color_primaries = AVCOL_PRI_SMPTE170M; break;
1066 case 6: st->codec->color_primaries = AVCOL_PRI_SMPTE240M; break;
1068 /* color transfer, Table 4-5 */
1069 switch (color_trc) {
1070 case 1: st->codec->color_trc = AVCOL_TRC_BT709; break;
1071 case 7: st->codec->color_trc = AVCOL_TRC_SMPTE240M; break;
1073 /* color matrix, Table 4-6 */
1074 switch (color_matrix) {
1075 case 1: st->codec->colorspace = AVCOL_SPC_BT709; break;
1076 case 6: st->codec->colorspace = AVCOL_SPC_BT470BG; break;
1077 case 7: st->codec->colorspace = AVCOL_SPC_SMPTE240M; break;
1080 av_log(c->fc, AV_LOG_TRACE, "\n");
1085 static int mov_read_fiel(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1088 unsigned mov_field_order;
1089 enum AVFieldOrder decoded_field_order = AV_FIELD_UNKNOWN;
1091 if (c->fc->nb_streams < 1) // will happen with jp2 files
1093 st = c->fc->streams[c->fc->nb_streams-1];
1095 return AVERROR_INVALIDDATA;
1096 mov_field_order = avio_rb16(pb);
1097 if ((mov_field_order & 0xFF00) == 0x0100)
1098 decoded_field_order = AV_FIELD_PROGRESSIVE;
1099 else if ((mov_field_order & 0xFF00) == 0x0200) {
1100 switch (mov_field_order & 0xFF) {
1101 case 0x01: decoded_field_order = AV_FIELD_TT;
1103 case 0x06: decoded_field_order = AV_FIELD_BB;
1105 case 0x09: decoded_field_order = AV_FIELD_TB;
1107 case 0x0E: decoded_field_order = AV_FIELD_BT;
1111 if (decoded_field_order == AV_FIELD_UNKNOWN && mov_field_order) {
1112 av_log(NULL, AV_LOG_ERROR, "Unknown MOV field order 0x%04x\n", mov_field_order);
1114 st->codec->field_order = decoded_field_order;
1119 /* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
1120 static int mov_read_extradata(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1127 if (c->fc->nb_streams < 1) // will happen with jp2 files
1129 st= c->fc->streams[c->fc->nb_streams-1];
1130 size= (uint64_t)st->codec->extradata_size + atom.size + 8 + AV_INPUT_BUFFER_PADDING_SIZE;
1131 if (size > INT_MAX || (uint64_t)atom.size > INT_MAX)
1132 return AVERROR_INVALIDDATA;
1133 if ((err = av_reallocp(&st->codec->extradata, size)) < 0) {
1134 st->codec->extradata_size = 0;
1137 buf = st->codec->extradata + st->codec->extradata_size;
1138 st->codec->extradata_size= size - AV_INPUT_BUFFER_PADDING_SIZE;
1139 AV_WB32( buf , atom.size + 8);
1140 AV_WL32( buf + 4, atom.type);
1142 err = ffio_read_size(pb, buf + 8, atom.size);
1149 static int mov_read_wave(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1154 if (c->fc->nb_streams < 1)
1156 st = c->fc->streams[c->fc->nb_streams-1];
1158 if ((uint64_t)atom.size > (1<<30))
1159 return AVERROR_INVALIDDATA;
1161 if (st->codec->codec_id == AV_CODEC_ID_QDM2 || st->codec->codec_id == AV_CODEC_ID_QDMC) {
1162 // pass all frma atom to codec, needed at least for QDMC and QDM2
1163 av_free(st->codec->extradata);
1164 st->codec->extradata = av_mallocz(atom.size + AV_INPUT_BUFFER_PADDING_SIZE);
1165 if (!st->codec->extradata)
1166 return AVERROR(ENOMEM);
1167 st->codec->extradata_size = atom.size;
1169 ret = ffio_read_size(pb, st->codec->extradata, atom.size);
1172 } else if (atom.size > 8) { /* to read frma, esds atoms */
1173 if ((ret = mov_read_default(c, pb, atom)) < 0)
1176 avio_skip(pb, atom.size);
1181 * This function reads atom content and puts data in extradata without tag
1182 * nor size unlike mov_read_extradata.
1184 static int mov_read_glbl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1189 if (c->fc->nb_streams < 1)
1191 st = c->fc->streams[c->fc->nb_streams-1];
1193 if ((uint64_t)atom.size > (1<<30))
1194 return AVERROR_INVALIDDATA;
1196 if (atom.size >= 10) {
1197 // Broken files created by legacy versions of libavformat will
1198 // wrap a whole fiel atom inside of a glbl atom.
1199 unsigned size = avio_rb32(pb);
1200 unsigned type = avio_rl32(pb);
1201 avio_seek(pb, -8, SEEK_CUR);
1202 if (type == MKTAG('f','i','e','l') && size == atom.size)
1203 return mov_read_default(c, pb, atom);
1205 av_free(st->codec->extradata);
1206 st->codec->extradata = av_mallocz(atom.size + AV_INPUT_BUFFER_PADDING_SIZE);
1207 if (!st->codec->extradata)
1208 return AVERROR(ENOMEM);
1209 st->codec->extradata_size = atom.size;
1211 ret = ffio_read_size(pb, st->codec->extradata, atom.size);
1218 static int mov_read_dvc1(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1221 uint8_t profile_level;
1224 if (c->fc->nb_streams < 1)
1226 st = c->fc->streams[c->fc->nb_streams-1];
1228 if (atom.size >= (1<<28) || atom.size < 7)
1229 return AVERROR_INVALIDDATA;
1231 profile_level = avio_r8(pb);
1232 if ((profile_level & 0xf0) != 0xc0)
1235 av_free(st->codec->extradata);
1236 st->codec->extradata = av_mallocz(atom.size - 7 + AV_INPUT_BUFFER_PADDING_SIZE);
1237 if (!st->codec->extradata)
1238 return AVERROR(ENOMEM);
1239 st->codec->extradata_size = atom.size - 7;
1240 avio_seek(pb, 6, SEEK_CUR);
1242 ret = ffio_read_size(pb, st->codec->extradata, st->codec->extradata_size);
1250 * An strf atom is a BITMAPINFOHEADER struct. This struct is 40 bytes itself,
1251 * but can have extradata appended at the end after the 40 bytes belonging
1254 static int mov_read_strf(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1259 if (c->fc->nb_streams < 1)
1261 if (atom.size <= 40)
1263 st = c->fc->streams[c->fc->nb_streams-1];
1265 if ((uint64_t)atom.size > (1<<30))
1266 return AVERROR_INVALIDDATA;
1268 av_free(st->codec->extradata);
1269 st->codec->extradata = av_mallocz(atom.size - 40 + AV_INPUT_BUFFER_PADDING_SIZE);
1270 if (!st->codec->extradata)
1271 return AVERROR(ENOMEM);
1272 st->codec->extradata_size = atom.size - 40;
1275 ret = ffio_read_size(pb, st->codec->extradata, atom.size - 40);
1282 static int mov_read_stco(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1285 MOVStreamContext *sc;
1286 unsigned int i, entries;
1288 if (c->fc->nb_streams < 1)
1290 st = c->fc->streams[c->fc->nb_streams-1];
1293 avio_r8(pb); /* version */
1294 avio_rb24(pb); /* flags */
1296 entries = avio_rb32(pb);
1300 if (entries >= UINT_MAX/sizeof(int64_t))
1301 return AVERROR_INVALIDDATA;
1303 sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
1304 if (!sc->chunk_offsets)
1305 return AVERROR(ENOMEM);
1306 sc->chunk_count = entries;
1308 if (atom.type == MKTAG('s','t','c','o'))
1309 for (i = 0; i < entries && !pb->eof_reached; i++)
1310 sc->chunk_offsets[i] = avio_rb32(pb);
1311 else if (atom.type == MKTAG('c','o','6','4'))
1312 for (i = 0; i < entries && !pb->eof_reached; i++)
1313 sc->chunk_offsets[i] = avio_rb64(pb);
1315 return AVERROR_INVALIDDATA;
1317 sc->chunk_count = i;
1319 if (pb->eof_reached)
1326 * Compute codec id for 'lpcm' tag.
1327 * See CoreAudioTypes and AudioStreamBasicDescription at Apple.
1329 enum AVCodecID ff_mov_get_lpcm_codec_id(int bps, int flags)
1336 return ff_get_pcm_codec_id(bps, flags & 1, flags & 2, flags & 4 ? -1 : 0);
1339 static int mov_codec_id(AVStream *st, uint32_t format)
1341 int id = ff_codec_get_id(ff_codec_movaudio_tags, format);
1344 ((format & 0xFFFF) == 'm' + ('s' << 8) ||
1345 (format & 0xFFFF) == 'T' + ('S' << 8)))
1346 id = ff_codec_get_id(ff_codec_wav_tags, av_bswap32(format) & 0xFFFF);
1348 if (st->codec->codec_type != AVMEDIA_TYPE_VIDEO && id > 0) {
1349 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
1350 } else if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO &&
1351 /* skip old asf mpeg4 tag */
1352 format && format != MKTAG('m','p','4','s')) {
1353 id = ff_codec_get_id(ff_codec_movvideo_tags, format);
1355 id = ff_codec_get_id(ff_codec_bmp_tags, format);
1357 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
1358 else if (st->codec->codec_type == AVMEDIA_TYPE_DATA) {
1359 id = ff_codec_get_id(ff_codec_movsubtitle_tags, format);
1361 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
1365 st->codec->codec_tag = format;
1370 static void mov_parse_stsd_video(MOVContext *c, AVIOContext *pb,
1371 AVStream *st, MOVStreamContext *sc)
1373 uint8_t codec_name[32];
1374 unsigned int color_depth, len, j;
1375 int color_greyscale;
1378 avio_rb16(pb); /* version */
1379 avio_rb16(pb); /* revision level */
1380 avio_rb32(pb); /* vendor */
1381 avio_rb32(pb); /* temporal quality */
1382 avio_rb32(pb); /* spatial quality */
1384 st->codec->width = avio_rb16(pb); /* width */
1385 st->codec->height = avio_rb16(pb); /* height */
1387 avio_rb32(pb); /* horiz resolution */
1388 avio_rb32(pb); /* vert resolution */
1389 avio_rb32(pb); /* data size, always 0 */
1390 avio_rb16(pb); /* frames per samples */
1392 len = avio_r8(pb); /* codec name, pascal string */
1395 mov_read_mac_string(c, pb, len, codec_name, sizeof(codec_name));
1397 avio_skip(pb, 31 - len);
1400 av_dict_set(&st->metadata, "encoder", codec_name, 0);
1402 /* codec_tag YV12 triggers an UV swap in rawdec.c */
1403 if (!memcmp(codec_name, "Planar Y'CbCr 8-bit 4:2:0", 25))
1404 st->codec->codec_tag = MKTAG('I', '4', '2', '0');
1405 /* Flash Media Server uses tag H263 with Sorenson Spark */
1406 if (st->codec->codec_tag == MKTAG('H','2','6','3') &&
1407 !memcmp(codec_name, "Sorenson H263", 13))
1408 st->codec->codec_id = AV_CODEC_ID_FLV1;
1410 st->codec->bits_per_coded_sample = avio_rb16(pb); /* depth */
1411 color_table_id = avio_rb16(pb); /* colortable id */
1412 av_log(c->fc, AV_LOG_TRACE, "depth %d, ctab id %d\n",
1413 st->codec->bits_per_coded_sample, color_table_id);
1414 /* figure out the palette situation */
1415 color_depth = st->codec->bits_per_coded_sample & 0x1F;
1416 color_greyscale = st->codec->bits_per_coded_sample & 0x20;
1418 /* if the depth is 2, 4, or 8 bpp, file is palettized */
1419 if ((color_depth == 2) || (color_depth == 4) || (color_depth == 8)) {
1420 /* for palette traversal */
1421 unsigned int color_start, color_count, color_end;
1422 unsigned char r, g, b;
1424 if (color_greyscale) {
1425 int color_index, color_dec;
1426 /* compute the greyscale palette */
1427 st->codec->bits_per_coded_sample = color_depth;
1428 color_count = 1 << color_depth;
1430 color_dec = 256 / (color_count - 1);
1431 for (j = 0; j < color_count; j++) {
1432 r = g = b = color_index;
1433 sc->palette[j] = (r << 16) | (g << 8) | (b);
1434 color_index -= color_dec;
1435 if (color_index < 0)
1438 } else if (color_table_id) {
1439 const uint8_t *color_table;
1440 /* if flag bit 3 is set, use the default palette */
1441 color_count = 1 << color_depth;
1442 if (color_depth == 2)
1443 color_table = ff_qt_default_palette_4;
1444 else if (color_depth == 4)
1445 color_table = ff_qt_default_palette_16;
1447 color_table = ff_qt_default_palette_256;
1449 for (j = 0; j < color_count; j++) {
1450 r = color_table[j * 3 + 0];
1451 g = color_table[j * 3 + 1];
1452 b = color_table[j * 3 + 2];
1453 sc->palette[j] = (r << 16) | (g << 8) | (b);
1456 /* load the palette from the file */
1457 color_start = avio_rb32(pb);
1458 color_count = avio_rb16(pb);
1459 color_end = avio_rb16(pb);
1460 if ((color_start <= 255) && (color_end <= 255)) {
1461 for (j = color_start; j <= color_end; j++) {
1462 /* each R, G, or B component is 16 bits;
1463 * only use the top 8 bits; skip alpha bytes
1473 sc->palette[j] = (r << 16) | (g << 8) | (b);
1477 sc->has_palette = 1;
1481 static void mov_parse_stsd_audio(MOVContext *c, AVIOContext *pb,
1482 AVStream *st, MOVStreamContext *sc)
1484 int bits_per_sample, flags;
1485 uint16_t version = avio_rb16(pb);
1487 avio_rb16(pb); /* revision level */
1488 avio_rb32(pb); /* vendor */
1490 st->codec->channels = avio_rb16(pb); /* channel count */
1491 st->codec->bits_per_coded_sample = avio_rb16(pb); /* sample size */
1492 av_log(c->fc, AV_LOG_TRACE, "audio channels %d\n", st->codec->channels);
1494 sc->audio_cid = avio_rb16(pb);
1495 avio_rb16(pb); /* packet size = 0 */
1497 st->codec->sample_rate = ((avio_rb32(pb) >> 16));
1499 // Read QT version 1 fields. In version 0 these do not exist.
1500 av_log(c->fc, AV_LOG_TRACE, "version =%d, isom =%d\n", version, c->isom);
1503 sc->samples_per_frame = avio_rb32(pb);
1504 avio_rb32(pb); /* bytes per packet */
1505 sc->bytes_per_frame = avio_rb32(pb);
1506 avio_rb32(pb); /* bytes per sample */
1507 } else if (version == 2) {
1508 avio_rb32(pb); /* sizeof struct only */
1509 st->codec->sample_rate = av_int2double(avio_rb64(pb));
1510 st->codec->channels = avio_rb32(pb);
1511 avio_rb32(pb); /* always 0x7F000000 */
1512 st->codec->bits_per_coded_sample = avio_rb32(pb);
1514 flags = avio_rb32(pb); /* lpcm format specific flag */
1515 sc->bytes_per_frame = avio_rb32(pb);
1516 sc->samples_per_frame = avio_rb32(pb);
1517 if (st->codec->codec_tag == MKTAG('l','p','c','m'))
1518 st->codec->codec_id =
1519 ff_mov_get_lpcm_codec_id(st->codec->bits_per_coded_sample,
1522 if (version == 0 || (version == 1 && sc->audio_cid != -2)) {
1523 /* can't correctly handle variable sized packet as audio unit */
1524 switch (st->codec->codec_id) {
1525 case AV_CODEC_ID_MP2:
1526 case AV_CODEC_ID_MP3:
1527 st->need_parsing = AVSTREAM_PARSE_FULL;
1533 switch (st->codec->codec_id) {
1534 case AV_CODEC_ID_PCM_S8:
1535 case AV_CODEC_ID_PCM_U8:
1536 if (st->codec->bits_per_coded_sample == 16)
1537 st->codec->codec_id = AV_CODEC_ID_PCM_S16BE;
1539 case AV_CODEC_ID_PCM_S16LE:
1540 case AV_CODEC_ID_PCM_S16BE:
1541 if (st->codec->bits_per_coded_sample == 8)
1542 st->codec->codec_id = AV_CODEC_ID_PCM_S8;
1543 else if (st->codec->bits_per_coded_sample == 24)
1544 st->codec->codec_id =
1545 st->codec->codec_id == AV_CODEC_ID_PCM_S16BE ?
1546 AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE;
1548 /* set values for old format before stsd version 1 appeared */
1549 case AV_CODEC_ID_MACE3:
1550 sc->samples_per_frame = 6;
1551 sc->bytes_per_frame = 2 * st->codec->channels;
1553 case AV_CODEC_ID_MACE6:
1554 sc->samples_per_frame = 6;
1555 sc->bytes_per_frame = 1 * st->codec->channels;
1557 case AV_CODEC_ID_ADPCM_IMA_QT:
1558 sc->samples_per_frame = 64;
1559 sc->bytes_per_frame = 34 * st->codec->channels;
1561 case AV_CODEC_ID_GSM:
1562 sc->samples_per_frame = 160;
1563 sc->bytes_per_frame = 33;
1569 bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
1570 if (bits_per_sample) {
1571 st->codec->bits_per_coded_sample = bits_per_sample;
1572 sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
1576 static void mov_parse_stsd_subtitle(MOVContext *c, AVIOContext *pb,
1577 AVStream *st, MOVStreamContext *sc,
1580 // ttxt stsd contains display flags, justification, background
1581 // color, fonts, and default styles, so fake an atom to read it
1582 MOVAtom fake_atom = { .size = size };
1583 // mp4s contains a regular esds atom
1584 if (st->codec->codec_tag != AV_RL32("mp4s"))
1585 mov_read_glbl(c, pb, fake_atom);
1586 st->codec->width = sc->width;
1587 st->codec->height = sc->height;
1590 static uint32_t yuv_to_rgba(uint32_t ycbcr)
1595 y = (ycbcr >> 16) & 0xFF;
1596 cr = (ycbcr >> 8) & 0xFF;
1599 b = av_clip_uint8(1.164 * (y - 16) + 2.018 * (cb - 128));
1600 g = av_clip_uint8(1.164 * (y - 16) - 0.813 * (cr - 128) - 0.391 * (cb - 128));
1601 r = av_clip_uint8(1.164 * (y - 16) + 1.596 * (cr - 128));
1603 return (r << 16) | (g << 8) | b;
1606 static int mov_rewrite_dvd_sub_extradata(AVStream *st)
1608 char buf[256] = {0};
1609 uint8_t *src = st->codec->extradata;
1612 if (st->codec->extradata_size != 64)
1615 if (st->codec->width > 0 && st->codec->height > 0)
1616 snprintf(buf, sizeof(buf), "size: %dx%d\n",
1617 st->codec->width, st->codec->height);
1618 av_strlcat(buf, "palette: ", sizeof(buf));
1620 for (i = 0; i < 16; i++) {
1621 uint32_t yuv = AV_RB32(src + i * 4);
1622 uint32_t rgba = yuv_to_rgba(yuv);
1624 av_strlcatf(buf, sizeof(buf), "%06"PRIx32"%s", rgba, i != 15 ? ", " : "");
1627 if (av_strlcat(buf, "\n", sizeof(buf)) >= sizeof(buf))
1630 av_freep(&st->codec->extradata);
1631 st->codec->extradata_size = 0;
1632 st->codec->extradata = av_mallocz(strlen(buf) + AV_INPUT_BUFFER_PADDING_SIZE);
1633 if (!st->codec->extradata)
1634 return AVERROR(ENOMEM);
1635 st->codec->extradata_size = strlen(buf);
1636 memcpy(st->codec->extradata, buf, st->codec->extradata_size);
1641 static int mov_parse_stsd_data(MOVContext *c, AVIOContext *pb,
1642 AVStream *st, MOVStreamContext *sc,
1647 if (st->codec->codec_tag == MKTAG('t','m','c','d')) {
1648 st->codec->extradata_size = size;
1649 st->codec->extradata = av_malloc(size + AV_INPUT_BUFFER_PADDING_SIZE);
1650 if (!st->codec->extradata)
1651 return AVERROR(ENOMEM);
1652 ret = ffio_read_size(pb, st->codec->extradata, size);
1656 /* other codec type, just skip (rtp, mp4s ...) */
1657 avio_skip(pb, size);
1662 static int mov_finalize_stsd_codec(MOVContext *c, AVIOContext *pb,
1663 AVStream *st, MOVStreamContext *sc)
1665 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
1666 !st->codec->sample_rate && sc->time_scale > 1)
1667 st->codec->sample_rate = sc->time_scale;
1669 /* special codec parameters handling */
1670 switch (st->codec->codec_id) {
1671 #if CONFIG_DV_DEMUXER
1672 case AV_CODEC_ID_DVAUDIO:
1673 c->dv_fctx = avformat_alloc_context();
1675 av_log(c->fc, AV_LOG_ERROR, "dv demux context alloc error\n");
1676 return AVERROR(ENOMEM);
1678 c->dv_demux = avpriv_dv_init_demux(c->dv_fctx);
1680 av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
1681 return AVERROR(ENOMEM);
1683 sc->dv_audio_container = 1;
1684 st->codec->codec_id = AV_CODEC_ID_PCM_S16LE;
1687 /* no ifdef since parameters are always those */
1688 case AV_CODEC_ID_QCELP:
1689 st->codec->channels = 1;
1690 // force sample rate for qcelp when not stored in mov
1691 if (st->codec->codec_tag != MKTAG('Q','c','l','p'))
1692 st->codec->sample_rate = 8000;
1694 case AV_CODEC_ID_AMR_NB:
1695 st->codec->channels = 1;
1696 /* force sample rate for amr, stsd in 3gp does not store sample rate */
1697 st->codec->sample_rate = 8000;
1699 case AV_CODEC_ID_AMR_WB:
1700 st->codec->channels = 1;
1701 st->codec->sample_rate = 16000;
1703 case AV_CODEC_ID_MP2:
1704 case AV_CODEC_ID_MP3:
1705 /* force type after stsd for m1a hdlr */
1706 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
1708 case AV_CODEC_ID_GSM:
1709 case AV_CODEC_ID_ADPCM_MS:
1710 case AV_CODEC_ID_ADPCM_IMA_WAV:
1711 case AV_CODEC_ID_ILBC:
1712 st->codec->block_align = sc->bytes_per_frame;
1714 case AV_CODEC_ID_ALAC:
1715 if (st->codec->extradata_size == 36) {
1716 st->codec->channels = AV_RB8 (st->codec->extradata + 21);
1717 st->codec->sample_rate = AV_RB32(st->codec->extradata + 32);
1720 case AV_CODEC_ID_VC1:
1721 st->need_parsing = AVSTREAM_PARSE_FULL;
1729 static int mov_skip_multiple_stsd(MOVContext *c, AVIOContext *pb,
1730 int codec_tag, int format,
1733 int video_codec_id = ff_codec_get_id(ff_codec_movvideo_tags, format);
1736 (codec_tag == AV_RL32("avc1") ||
1737 codec_tag == AV_RL32("hvc1") ||
1738 codec_tag == AV_RL32("hev1") ||
1739 (codec_tag != format &&
1740 (c->fc->video_codec_id ? video_codec_id != c->fc->video_codec_id
1741 : codec_tag != MKTAG('j','p','e','g'))))) {
1742 /* Multiple fourcc, we skip JPEG. This is not correct, we should
1743 * export it as a separate AVStream but this needs a few changes
1744 * in the MOV demuxer, patch welcome. */
1746 av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n");
1747 avio_skip(pb, size);
1754 int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries)
1757 MOVStreamContext *sc;
1758 int pseudo_stream_id;
1760 if (c->fc->nb_streams < 1)
1762 st = c->fc->streams[c->fc->nb_streams-1];
1765 for (pseudo_stream_id = 0;
1766 pseudo_stream_id < entries && !pb->eof_reached;
1767 pseudo_stream_id++) {
1768 //Parsing Sample description table
1770 int ret, dref_id = 1;
1771 MOVAtom a = { AV_RL32("stsd") };
1772 int64_t start_pos = avio_tell(pb);
1773 uint32_t size = avio_rb32(pb); /* size */
1774 uint32_t format = avio_rl32(pb); /* data format */
1777 avio_rb32(pb); /* reserved */
1778 avio_rb16(pb); /* reserved */
1779 dref_id = avio_rb16(pb);
1781 av_log(c->fc, AV_LOG_ERROR, "invalid size %"PRIu32" in stsd\n", size);
1782 return AVERROR_INVALIDDATA;
1785 if (mov_skip_multiple_stsd(c, pb, st->codec->codec_tag, format,
1786 size - (avio_tell(pb) - start_pos)))
1789 sc->pseudo_stream_id = st->codec->codec_tag ? -1 : pseudo_stream_id;
1790 sc->dref_id= dref_id;
1792 id = mov_codec_id(st, format);
1794 av_log(c->fc, AV_LOG_TRACE,
1795 "size=%"PRIu32" format=0x%08x codec_type=%d\n",
1796 size, format, st->codec->codec_type);
1798 if (st->codec->codec_type==AVMEDIA_TYPE_VIDEO) {
1799 st->codec->codec_id = id;
1800 mov_parse_stsd_video(c, pb, st, sc);
1801 } else if (st->codec->codec_type==AVMEDIA_TYPE_AUDIO) {
1802 st->codec->codec_id = id;
1803 mov_parse_stsd_audio(c, pb, st, sc);
1804 } else if (st->codec->codec_type==AVMEDIA_TYPE_SUBTITLE){
1805 st->codec->codec_id = id;
1806 mov_parse_stsd_subtitle(c, pb, st, sc,
1807 size - (avio_tell(pb) - start_pos));
1809 ret = mov_parse_stsd_data(c, pb, st, sc,
1810 size - (avio_tell(pb) - start_pos));
1814 /* this will read extra atoms at the end (wave, alac, damr, avcC, hvcC, SMI ...) */
1815 a.size = size - (avio_tell(pb) - start_pos);
1817 if ((ret = mov_read_default(c, pb, a)) < 0)
1819 } else if (a.size > 0)
1820 avio_skip(pb, a.size);
1823 if (pb->eof_reached)
1826 return mov_finalize_stsd_codec(c, pb, st, sc);
1829 static int mov_read_stsd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1833 avio_r8(pb); /* version */
1834 avio_rb24(pb); /* flags */
1835 entries = avio_rb32(pb);
1837 return ff_mov_read_stsd_entries(c, pb, entries);
1840 static int mov_read_stsc(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1843 MOVStreamContext *sc;
1844 unsigned int i, entries;
1846 if (c->fc->nb_streams < 1)
1848 st = c->fc->streams[c->fc->nb_streams-1];
1851 avio_r8(pb); /* version */
1852 avio_rb24(pb); /* flags */
1854 entries = avio_rb32(pb);
1856 av_log(c->fc, AV_LOG_TRACE, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
1860 if (entries >= UINT_MAX / sizeof(*sc->stsc_data))
1861 return AVERROR_INVALIDDATA;
1862 sc->stsc_data = av_malloc(entries * sizeof(*sc->stsc_data));
1864 return AVERROR(ENOMEM);
1866 for (i = 0; i < entries && !pb->eof_reached; i++) {
1867 sc->stsc_data[i].first = avio_rb32(pb);
1868 sc->stsc_data[i].count = avio_rb32(pb);
1869 sc->stsc_data[i].id = avio_rb32(pb);
1874 if (pb->eof_reached)
1880 static int mov_read_stps(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1883 MOVStreamContext *sc;
1884 unsigned i, entries;
1886 if (c->fc->nb_streams < 1)
1888 st = c->fc->streams[c->fc->nb_streams-1];
1891 avio_rb32(pb); // version + flags
1893 entries = avio_rb32(pb);
1894 if (entries >= UINT_MAX / sizeof(*sc->stps_data))
1895 return AVERROR_INVALIDDATA;
1896 sc->stps_data = av_malloc(entries * sizeof(*sc->stps_data));
1898 return AVERROR(ENOMEM);
1900 for (i = 0; i < entries && !pb->eof_reached; i++) {
1901 sc->stps_data[i] = avio_rb32(pb);
1902 //av_log(c->fc, AV_LOG_TRACE, "stps %d\n", sc->stps_data[i]);
1907 if (pb->eof_reached)
1913 static int mov_read_stss(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1916 MOVStreamContext *sc;
1917 unsigned int i, entries;
1919 if (c->fc->nb_streams < 1)
1921 st = c->fc->streams[c->fc->nb_streams-1];
1924 avio_r8(pb); /* version */
1925 avio_rb24(pb); /* flags */
1927 entries = avio_rb32(pb);
1929 av_log(c->fc, AV_LOG_TRACE, "keyframe_count = %d\n", entries);
1933 sc->keyframe_absent = 1;
1936 if (entries >= UINT_MAX / sizeof(int))
1937 return AVERROR_INVALIDDATA;
1938 av_freep(&sc->keyframes);
1939 sc->keyframes = av_malloc(entries * sizeof(int));
1941 return AVERROR(ENOMEM);
1943 for (i = 0; i < entries && !pb->eof_reached; i++) {
1944 sc->keyframes[i] = avio_rb32(pb);
1945 //av_log(c->fc, AV_LOG_TRACE, "keyframes[]=%d\n", sc->keyframes[i]);
1948 sc->keyframe_count = i;
1950 if (pb->eof_reached)
1956 static int mov_read_stsz(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1959 MOVStreamContext *sc;
1960 unsigned int i, entries, sample_size, field_size, num_bytes;
1965 if (c->fc->nb_streams < 1)
1967 st = c->fc->streams[c->fc->nb_streams-1];
1970 avio_r8(pb); /* version */
1971 avio_rb24(pb); /* flags */
1973 if (atom.type == MKTAG('s','t','s','z')) {
1974 sample_size = avio_rb32(pb);
1975 if (!sc->sample_size) /* do not overwrite value computed in stsd */
1976 sc->sample_size = sample_size;
1980 avio_rb24(pb); /* reserved */
1981 field_size = avio_r8(pb);
1983 entries = avio_rb32(pb);
1985 av_log(c->fc, AV_LOG_TRACE, "sample_size = %d sample_count = %d\n", sc->sample_size, entries);
1987 sc->sample_count = entries;
1991 if (field_size != 4 && field_size != 8 && field_size != 16 && field_size != 32) {
1992 av_log(c->fc, AV_LOG_ERROR, "Invalid sample field size %d\n", field_size);
1993 return AVERROR_INVALIDDATA;
1998 if (entries >= UINT_MAX / sizeof(int) || entries >= (UINT_MAX - 4) / field_size)
1999 return AVERROR_INVALIDDATA;
2000 sc->sample_sizes = av_malloc(entries * sizeof(int));
2001 if (!sc->sample_sizes)
2002 return AVERROR(ENOMEM);
2004 num_bytes = (entries*field_size+4)>>3;
2006 buf = av_malloc(num_bytes+AV_INPUT_BUFFER_PADDING_SIZE);
2008 av_freep(&sc->sample_sizes);
2009 return AVERROR(ENOMEM);
2012 ret = ffio_read_size(pb, buf, num_bytes);
2014 av_freep(&sc->sample_sizes);
2019 init_get_bits(&gb, buf, 8*num_bytes);
2021 for (i = 0; i < entries && !pb->eof_reached; i++) {
2022 sc->sample_sizes[i] = get_bits_long(&gb, field_size);
2023 sc->data_size += sc->sample_sizes[i];
2026 sc->sample_count = i;
2030 if (pb->eof_reached)
2036 static int mov_read_stts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2039 MOVStreamContext *sc;
2040 unsigned int i, entries;
2042 int64_t total_sample_count=0;
2044 if (c->fc->nb_streams < 1)
2046 st = c->fc->streams[c->fc->nb_streams-1];
2049 avio_r8(pb); /* version */
2050 avio_rb24(pb); /* flags */
2051 entries = avio_rb32(pb);
2053 av_log(c->fc, AV_LOG_TRACE, "track[%i].stts.entries = %i\n",
2054 c->fc->nb_streams-1, entries);
2058 if (entries >= UINT_MAX / sizeof(*sc->stts_data))
2059 return AVERROR(EINVAL);
2061 av_free(sc->stts_data);
2062 sc->stts_data = av_malloc(entries * sizeof(*sc->stts_data));
2064 return AVERROR(ENOMEM);
2066 for (i = 0; i < entries && !pb->eof_reached; i++) {
2067 int sample_duration;
2070 sample_count=avio_rb32(pb);
2071 sample_duration = avio_rb32(pb);
2072 if (sample_count < 0) {
2073 av_log(c->fc, AV_LOG_ERROR, "Invalid sample_count=%d\n", sample_count);
2074 return AVERROR_INVALIDDATA;
2076 sc->stts_data[i].count= sample_count;
2077 sc->stts_data[i].duration= sample_duration;
2079 av_log(c->fc, AV_LOG_TRACE, "sample_count=%d, sample_duration=%d\n",
2080 sample_count, sample_duration);
2082 duration+=(int64_t)sample_duration*sample_count;
2083 total_sample_count+=sample_count;
2088 if (pb->eof_reached)
2091 st->nb_frames= total_sample_count;
2093 st->duration= duration;
2094 sc->track_end = duration;
2098 static int mov_read_ctts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2101 MOVStreamContext *sc;
2102 unsigned int i, entries;
2104 if (c->fc->nb_streams < 1)
2106 st = c->fc->streams[c->fc->nb_streams-1];
2109 avio_r8(pb); /* version */
2110 avio_rb24(pb); /* flags */
2111 entries = avio_rb32(pb);
2113 av_log(c->fc, AV_LOG_TRACE, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
2115 av_freep(&sc->ctts_data);
2119 if (entries >= UINT_MAX / sizeof(*sc->ctts_data))
2120 return AVERROR_INVALIDDATA;
2121 sc->ctts_data = av_realloc(NULL, entries * sizeof(*sc->ctts_data));
2123 return AVERROR(ENOMEM);
2125 for (i = 0; i < entries && !pb->eof_reached; i++) {
2126 int count =avio_rb32(pb);
2127 int duration =avio_rb32(pb);
2129 sc->ctts_data[i].count = count;
2130 sc->ctts_data[i].duration= duration;
2132 sc->dts_shift = FFMAX(sc->dts_shift, -duration);
2137 if (pb->eof_reached)
2140 av_log(c->fc, AV_LOG_TRACE, "dts shift %d\n", sc->dts_shift);
2145 static int mov_read_sbgp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2148 MOVStreamContext *sc;
2149 unsigned int i, entries;
2151 uint32_t grouping_type;
2153 if (c->fc->nb_streams < 1)
2155 st = c->fc->streams[c->fc->nb_streams-1];
2158 version = avio_r8(pb); /* version */
2159 avio_rb24(pb); /* flags */
2160 grouping_type = avio_rl32(pb);
2161 if (grouping_type != MKTAG( 'r','a','p',' '))
2162 return 0; /* only support 'rap ' grouping */
2164 avio_rb32(pb); /* grouping_type_parameter */
2166 entries = avio_rb32(pb);
2169 if (entries >= UINT_MAX / sizeof(*sc->rap_group))
2170 return AVERROR_INVALIDDATA;
2171 sc->rap_group = av_malloc(entries * sizeof(*sc->rap_group));
2173 return AVERROR(ENOMEM);
2175 for (i = 0; i < entries && !pb->eof_reached; i++) {
2176 sc->rap_group[i].count = avio_rb32(pb); /* sample_count */
2177 sc->rap_group[i].index = avio_rb32(pb); /* group_description_index */
2180 sc->rap_group_count = i;
2182 return pb->eof_reached ? AVERROR_EOF : 0;
2185 static void mov_build_index(MOVContext *mov, AVStream *st)
2187 MOVStreamContext *sc = st->priv_data;
2188 int64_t current_offset;
2189 int64_t current_dts = 0;
2190 unsigned int stts_index = 0;
2191 unsigned int stsc_index = 0;
2192 unsigned int stss_index = 0;
2193 unsigned int stps_index = 0;
2195 uint64_t stream_size = 0;
2197 /* adjust first dts according to edit list */
2198 if (sc->time_offset && mov->time_scale > 0) {
2199 if (sc->time_offset < 0)
2200 sc->time_offset = av_rescale(sc->time_offset, sc->time_scale, mov->time_scale);
2201 current_dts = -sc->time_offset;
2202 if (sc->ctts_data && sc->stts_data && sc->stts_data[0].duration &&
2203 sc->ctts_data[0].duration / sc->stts_data[0].duration > 16) {
2204 /* more than 16 frames delay, dts are likely wrong
2205 this happens with files created by iMovie */
2207 st->codec->has_b_frames = 1;
2211 /* only use old uncompressed audio chunk demuxing when stts specifies it */
2212 if (!(st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
2213 sc->stts_count == 1 && sc->stts_data[0].duration == 1)) {
2214 unsigned int current_sample = 0;
2215 unsigned int stts_sample = 0;
2216 unsigned int sample_size;
2217 unsigned int distance = 0;
2218 unsigned int rap_group_index = 0;
2219 unsigned int rap_group_sample = 0;
2220 int rap_group_present = sc->rap_group_count && sc->rap_group;
2221 int key_off = (sc->keyframes && sc->keyframes[0] > 0) || (sc->stps_data && sc->stps_data[0] > 0);
2223 current_dts -= sc->dts_shift;
2225 if (!sc->sample_count)
2227 if (sc->sample_count >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries)
2229 if (av_reallocp_array(&st->index_entries,
2230 st->nb_index_entries + sc->sample_count,
2231 sizeof(*st->index_entries)) < 0) {
2232 st->nb_index_entries = 0;
2235 st->index_entries_allocated_size = (st->nb_index_entries + sc->sample_count) * sizeof(*st->index_entries);
2237 for (i = 0; i < sc->chunk_count; i++) {
2238 current_offset = sc->chunk_offsets[i];
2239 while (stsc_index + 1 < sc->stsc_count &&
2240 i + 1 == sc->stsc_data[stsc_index + 1].first)
2242 for (j = 0; j < sc->stsc_data[stsc_index].count; j++) {
2244 if (current_sample >= sc->sample_count) {
2245 av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
2249 if (!sc->keyframe_absent && (!sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index])) {
2251 if (stss_index + 1 < sc->keyframe_count)
2253 } else if (sc->stps_count && current_sample+key_off == sc->stps_data[stps_index]) {
2255 if (stps_index + 1 < sc->stps_count)
2258 if (rap_group_present && rap_group_index < sc->rap_group_count) {
2259 if (sc->rap_group[rap_group_index].index > 0)
2261 if (++rap_group_sample == sc->rap_group[rap_group_index].count) {
2262 rap_group_sample = 0;
2268 sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
2269 if (sc->pseudo_stream_id == -1 ||
2270 sc->stsc_data[stsc_index].id - 1 == sc->pseudo_stream_id) {
2271 AVIndexEntry *e = &st->index_entries[st->nb_index_entries++];
2272 e->pos = current_offset;
2273 e->timestamp = current_dts;
2274 e->size = sample_size;
2275 e->min_distance = distance;
2276 e->flags = keyframe ? AVINDEX_KEYFRAME : 0;
2277 av_log(mov->fc, AV_LOG_TRACE, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
2278 "size %d, distance %d, keyframe %d\n", st->index, current_sample,
2279 current_offset, current_dts, sample_size, distance, keyframe);
2282 current_offset += sample_size;
2283 stream_size += sample_size;
2284 current_dts += sc->stts_data[stts_index].duration;
2288 if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
2294 if (st->duration > 0)
2295 st->codec->bit_rate = stream_size*8*sc->time_scale/st->duration;
2297 unsigned chunk_samples, total = 0;
2299 // compute total chunk count
2300 for (i = 0; i < sc->stsc_count; i++) {
2301 unsigned count, chunk_count;
2303 chunk_samples = sc->stsc_data[i].count;
2304 if (i != sc->stsc_count - 1 &&
2305 sc->samples_per_frame && chunk_samples % sc->samples_per_frame) {
2306 av_log(mov->fc, AV_LOG_ERROR, "error unaligned chunk\n");
2310 if (sc->samples_per_frame >= 160) { // gsm
2311 count = chunk_samples / sc->samples_per_frame;
2312 } else if (sc->samples_per_frame > 1) {
2313 unsigned samples = (1024/sc->samples_per_frame)*sc->samples_per_frame;
2314 count = (chunk_samples+samples-1) / samples;
2316 count = (chunk_samples+1023) / 1024;
2319 if (i < sc->stsc_count - 1)
2320 chunk_count = sc->stsc_data[i+1].first - sc->stsc_data[i].first;
2322 chunk_count = sc->chunk_count - (sc->stsc_data[i].first - 1);
2323 total += chunk_count * count;
2326 av_log(mov->fc, AV_LOG_TRACE, "chunk count %d\n", total);
2327 if (total >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries)
2329 if (av_reallocp_array(&st->index_entries,
2330 st->nb_index_entries + total,
2331 sizeof(*st->index_entries)) < 0) {
2332 st->nb_index_entries = 0;
2335 st->index_entries_allocated_size = (st->nb_index_entries + total) * sizeof(*st->index_entries);
2338 for (i = 0; i < sc->chunk_count; i++) {
2339 current_offset = sc->chunk_offsets[i];
2340 if (stsc_index + 1 < sc->stsc_count &&
2341 i + 1 == sc->stsc_data[stsc_index + 1].first)
2343 chunk_samples = sc->stsc_data[stsc_index].count;
2345 while (chunk_samples > 0) {
2347 unsigned size, samples;
2349 if (sc->samples_per_frame > 1 && !sc->bytes_per_frame) {
2350 avpriv_request_sample(mov->fc,
2351 "Zero bytes per frame, but %d samples per frame",
2352 sc->samples_per_frame);
2356 if (sc->samples_per_frame >= 160) { // gsm
2357 samples = sc->samples_per_frame;
2358 size = sc->bytes_per_frame;
2360 if (sc->samples_per_frame > 1) {
2361 samples = FFMIN((1024 / sc->samples_per_frame)*
2362 sc->samples_per_frame, chunk_samples);
2363 size = (samples / sc->samples_per_frame) * sc->bytes_per_frame;
2365 samples = FFMIN(1024, chunk_samples);
2366 size = samples * sc->sample_size;
2370 if (st->nb_index_entries >= total) {
2371 av_log(mov->fc, AV_LOG_ERROR, "wrong chunk count %d\n", total);
2374 e = &st->index_entries[st->nb_index_entries++];
2375 e->pos = current_offset;
2376 e->timestamp = current_dts;
2378 e->min_distance = 0;
2379 e->flags = AVINDEX_KEYFRAME;
2380 av_log(mov->fc, AV_LOG_TRACE, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", "
2381 "size %d, duration %d\n", st->index, i, current_offset, current_dts,
2384 current_offset += size;
2385 current_dts += samples;
2386 chunk_samples -= samples;
2392 static int mov_open_dref(AVIOContext **pb, char *src, MOVDref *ref,
2393 AVIOInterruptCB *int_cb)
2395 /* try relative path, we do not try the absolute because it can leak information about our
2396 system to an attacker */
2397 if (ref->nlvl_to > 0 && ref->nlvl_from > 0) {
2398 char filename[1024];
2402 /* find a source dir */
2403 src_path = strrchr(src, '/');
2409 /* find a next level down to target */
2410 for (i = 0, l = strlen(ref->path) - 1; l >= 0; l--)
2411 if (ref->path[l] == '/') {
2412 if (i == ref->nlvl_to - 1)
2418 /* compose filename if next level down to target was found */
2419 if (i == ref->nlvl_to - 1 && src_path - src < sizeof(filename)) {
2420 memcpy(filename, src, src_path - src);
2421 filename[src_path - src] = 0;
2423 for (i = 1; i < ref->nlvl_from; i++)
2424 av_strlcat(filename, "../", 1024);
2426 av_strlcat(filename, ref->path + l + 1, 1024);
2428 if (!avio_open2(pb, filename, AVIO_FLAG_READ, int_cb, NULL))
2433 return AVERROR(ENOENT);
2436 static int mov_read_trak(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2439 MOVStreamContext *sc;
2442 st = avformat_new_stream(c->fc, NULL);
2443 if (!st) return AVERROR(ENOMEM);
2444 st->id = c->fc->nb_streams;
2445 sc = av_mallocz(sizeof(MOVStreamContext));
2446 if (!sc) return AVERROR(ENOMEM);
2449 st->codec->codec_type = AVMEDIA_TYPE_DATA;
2450 sc->ffindex = st->index;
2452 if ((ret = mov_read_default(c, pb, atom)) < 0)
2456 if (sc->chunk_count && (!sc->stts_count || !sc->stsc_count ||
2457 (!sc->sample_size && !sc->sample_count))) {
2458 av_log(c->fc, AV_LOG_ERROR, "stream %d, missing mandatory atoms, broken header\n",
2463 if (sc->time_scale <= 0) {
2464 av_log(c->fc, AV_LOG_WARNING, "stream %d, timescale not set\n", st->index);
2465 sc->time_scale = c->time_scale;
2466 if (sc->time_scale <= 0)
2470 avpriv_set_pts_info(st, 64, 1, sc->time_scale);
2472 mov_build_index(c, st);
2474 if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) {
2475 MOVDref *dref = &sc->drefs[sc->dref_id - 1];
2476 if (mov_open_dref(&sc->pb, c->fc->filename, dref, &c->fc->interrupt_callback) < 0)
2477 av_log(c->fc, AV_LOG_ERROR,
2478 "stream %d, error opening alias: path='%s', dir='%s', "
2479 "filename='%s', volume='%s', nlvl_from=%d, nlvl_to=%d\n",
2480 st->index, dref->path, dref->dir, dref->filename,
2481 dref->volume, dref->nlvl_from, dref->nlvl_to);
2485 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2486 if (!st->sample_aspect_ratio.num &&
2487 (st->codec->width != sc->width || st->codec->height != sc->height)) {
2488 st->sample_aspect_ratio = av_d2q(((double)st->codec->height * sc->width) /
2489 ((double)st->codec->width * sc->height), INT_MAX);
2493 // done for ai5q, ai52, ai55, ai1q, ai12 and ai15.
2494 if (!st->codec->extradata_size && st->codec->codec_id == AV_CODEC_ID_H264 &&
2495 TAG_IS_AVCI(st->codec->codec_tag)) {
2496 ret = ff_generate_avci_extradata(st);
2501 switch (st->codec->codec_id) {
2502 #if CONFIG_H261_DECODER
2503 case AV_CODEC_ID_H261:
2505 #if CONFIG_H263_DECODER
2506 case AV_CODEC_ID_H263:
2508 #if CONFIG_MPEG4_DECODER
2509 case AV_CODEC_ID_MPEG4:
2511 st->codec->width = 0; /* let decoder init width/height */
2512 st->codec->height= 0;
2516 /* Do not need those anymore. */
2517 av_freep(&sc->chunk_offsets);
2518 av_freep(&sc->stsc_data);
2519 av_freep(&sc->sample_sizes);
2520 av_freep(&sc->keyframes);
2521 av_freep(&sc->stts_data);
2522 av_freep(&sc->stps_data);
2523 av_freep(&sc->rap_group);
2528 static int mov_read_ilst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2531 c->itunes_metadata = 1;
2532 ret = mov_read_default(c, pb, atom);
2533 c->itunes_metadata = 0;
2537 static int mov_read_replaygain(MOVContext *c, AVIOContext *pb, int size)
2539 int64_t end = avio_tell(pb) + size;
2540 uint8_t *key = NULL, *val = NULL;
2543 for (i = 0; i < 2; i++) {
2548 if (end - avio_tell(pb) <= 12)
2551 len = avio_rb32(pb);
2552 tag = avio_rl32(pb);
2553 avio_skip(pb, 4); // flags
2555 if (len < 12 || len - 12 > end - avio_tell(pb))
2559 if (tag == MKTAG('n', 'a', 'm', 'e'))
2561 else if (tag == MKTAG('d', 'a', 't', 'a') && len > 4) {
2568 *p = av_malloc(len + 1);
2571 ret = ffio_read_size(pb, *p, len);
2580 av_dict_set(&c->fc->metadata, key, val,
2581 AV_DICT_DONT_STRDUP_KEY | AV_DICT_DONT_STRDUP_VAL);
2585 avio_seek(pb, end, SEEK_SET);
2591 static int mov_read_custom(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2593 int64_t end = avio_tell(pb) + atom.size;
2599 len = avio_rb32(pb);
2600 tag = avio_rl32(pb);
2602 if (len > atom.size)
2605 if (tag == MKTAG('m', 'e', 'a', 'n') && len > 12) {
2606 uint8_t domain[128];
2609 avio_skip(pb, 4); // flags
2612 domain_len = avio_get_str(pb, len, domain, sizeof(domain));
2613 avio_skip(pb, len - domain_len);
2614 if (!strcmp(domain, "org.hydrogenaudio.replaygain"))
2615 return mov_read_replaygain(c, pb, end - avio_tell(pb));
2619 av_log(c->fc, AV_LOG_VERBOSE,
2620 "Unhandled or malformed custom metadata of size %"PRId64"\n", atom.size);
2624 static int mov_read_meta(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2626 while (atom.size > 8) {
2627 uint32_t tag = avio_rl32(pb);
2629 if (tag == MKTAG('h','d','l','r')) {
2630 avio_seek(pb, -8, SEEK_CUR);
2632 return mov_read_default(c, pb, atom);
2638 static int mov_read_tkhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2643 int64_t disp_transform[2];
2644 int display_matrix[3][3];
2646 MOVStreamContext *sc;
2650 if (c->fc->nb_streams < 1)
2652 st = c->fc->streams[c->fc->nb_streams-1];
2655 version = avio_r8(pb);
2656 flags = avio_rb24(pb);
2657 st->disposition |= (flags & MOV_TKHD_FLAG_ENABLED) ? AV_DISPOSITION_DEFAULT : 0;
2663 avio_rb32(pb); /* creation time */
2664 avio_rb32(pb); /* modification time */
2666 st->id = (int)avio_rb32(pb); /* track id (NOT 0 !)*/
2667 avio_rb32(pb); /* reserved */
2669 /* highlevel (considering edits) duration in movie timebase */
2670 (version == 1) ? avio_rb64(pb) : avio_rb32(pb);
2671 avio_rb32(pb); /* reserved */
2672 avio_rb32(pb); /* reserved */
2674 avio_rb16(pb); /* layer */
2675 avio_rb16(pb); /* alternate group */
2676 avio_rb16(pb); /* volume */
2677 avio_rb16(pb); /* reserved */
2679 //read in the display matrix (outlined in ISO 14496-12, Section 6.2.2)
2680 // they're kept in fixed point format through all calculations
2681 // save u,v,z to store the whole matrix in the AV_PKT_DATA_DISPLAYMATRIX
2682 // side data, but the scale factor is not needed to calculate aspect ratio
2683 for (i = 0; i < 3; i++) {
2684 display_matrix[i][0] = avio_rb32(pb); // 16.16 fixed point
2685 display_matrix[i][1] = avio_rb32(pb); // 16.16 fixed point
2686 display_matrix[i][2] = avio_rb32(pb); // 2.30 fixed point
2689 width = avio_rb32(pb); // 16.16 fixed point track width
2690 height = avio_rb32(pb); // 16.16 fixed point track height
2691 sc->width = width >> 16;
2692 sc->height = height >> 16;
2694 // save the matrix when it is not the default identity
2695 if (display_matrix[0][0] != (1 << 16) ||
2696 display_matrix[1][1] != (1 << 16) ||
2697 display_matrix[2][2] != (1 << 30) ||
2698 display_matrix[0][1] || display_matrix[0][2] ||
2699 display_matrix[1][0] || display_matrix[1][2] ||
2700 display_matrix[2][0] || display_matrix[2][1]) {
2703 av_freep(&sc->display_matrix);
2704 sc->display_matrix = av_malloc(sizeof(int32_t) * 9);
2705 if (!sc->display_matrix)
2706 return AVERROR(ENOMEM);
2708 for (i = 0; i < 3; i++)
2709 for (j = 0; j < 3; j++)
2710 sc->display_matrix[i * 3 + j] = display_matrix[i][j];
2713 // transform the display width/height according to the matrix
2714 // skip this when the display matrix is the identity one
2715 // to keep the same scale, use [width height 1<<16]
2716 if (width && height && sc->display_matrix) {
2717 for (i = 0; i < 2; i++)
2719 (int64_t) width * display_matrix[0][i] +
2720 (int64_t) height * display_matrix[1][i] +
2721 ((int64_t) display_matrix[2][i] << 16);
2723 //sample aspect ratio is new width/height divided by old width/height
2724 if (disp_transform[0] > 0 && disp_transform[1] > 0)
2725 st->sample_aspect_ratio = av_d2q(
2726 ((double) disp_transform[0] * height) /
2727 ((double) disp_transform[1] * width), INT_MAX);
2732 static int mov_read_tfhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2734 MOVFragment *frag = &c->fragment;
2735 MOVTrackExt *trex = NULL;
2736 int flags, track_id, i;
2738 avio_r8(pb); /* version */
2739 flags = avio_rb24(pb);
2741 track_id = avio_rb32(pb);
2743 return AVERROR_INVALIDDATA;
2744 frag->track_id = track_id;
2745 for (i = 0; i < c->trex_count; i++)
2746 if (c->trex_data[i].track_id == frag->track_id) {
2747 trex = &c->trex_data[i];
2751 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding trex\n");
2752 return AVERROR_INVALIDDATA;
2755 frag->base_data_offset = flags & MOV_TFHD_BASE_DATA_OFFSET ?
2756 avio_rb64(pb) : flags & MOV_TFHD_DEFAULT_BASE_IS_MOOF ?
2757 frag->moof_offset : frag->implicit_offset;
2758 frag->stsd_id = flags & MOV_TFHD_STSD_ID ? avio_rb32(pb) : trex->stsd_id;
2760 frag->duration = flags & MOV_TFHD_DEFAULT_DURATION ?
2761 avio_rb32(pb) : trex->duration;
2762 frag->size = flags & MOV_TFHD_DEFAULT_SIZE ?
2763 avio_rb32(pb) : trex->size;
2764 frag->flags = flags & MOV_TFHD_DEFAULT_FLAGS ?
2765 avio_rb32(pb) : trex->flags;
2766 av_log(c->fc, AV_LOG_TRACE, "frag flags 0x%x\n", frag->flags);
2770 static int mov_read_chap(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2772 c->chapter_track = avio_rb32(pb);
2776 static int mov_read_trex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2781 if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data))
2782 return AVERROR_INVALIDDATA;
2783 if ((err = av_reallocp_array(&c->trex_data, c->trex_count + 1,
2784 sizeof(*c->trex_data))) < 0) {
2788 trex = &c->trex_data[c->trex_count++];
2789 avio_r8(pb); /* version */
2790 avio_rb24(pb); /* flags */
2791 trex->track_id = avio_rb32(pb);
2792 trex->stsd_id = avio_rb32(pb);
2793 trex->duration = avio_rb32(pb);
2794 trex->size = avio_rb32(pb);
2795 trex->flags = avio_rb32(pb);
2799 static int mov_read_tfdt(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2801 MOVFragment *frag = &c->fragment;
2802 AVStream *st = NULL;
2803 MOVStreamContext *sc;
2806 for (i = 0; i < c->fc->nb_streams; i++) {
2807 if (c->fc->streams[i]->id == frag->track_id) {
2808 st = c->fc->streams[i];
2813 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id);
2814 return AVERROR_INVALIDDATA;
2817 if (sc->pseudo_stream_id + 1 != frag->stsd_id)
2819 version = avio_r8(pb);
2820 avio_rb24(pb); /* flags */
2822 sc->track_end = avio_rb64(pb);
2824 sc->track_end = avio_rb32(pb);
2829 static int mov_read_trun(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2831 MOVFragment *frag = &c->fragment;
2832 AVStream *st = NULL;
2833 MOVStreamContext *sc;
2837 int data_offset = 0;
2838 unsigned entries, first_sample_flags = frag->flags;
2839 int flags, distance, i, err;
2841 for (i = 0; i < c->fc->nb_streams; i++) {
2842 if (c->fc->streams[i]->id == frag->track_id) {
2843 st = c->fc->streams[i];
2848 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id);
2849 return AVERROR_INVALIDDATA;
2852 if (sc->pseudo_stream_id+1 != frag->stsd_id)
2854 avio_r8(pb); /* version */
2855 flags = avio_rb24(pb);
2856 entries = avio_rb32(pb);
2857 av_log(c->fc, AV_LOG_TRACE, "flags 0x%x entries %d\n", flags, entries);
2859 /* Always assume the presence of composition time offsets.
2860 * Without this assumption, for instance, we cannot deal with a track in fragmented movies that meet the following.
2861 * 1) in the initial movie, there are no samples.
2862 * 2) in the first movie fragment, there is only one sample without composition time offset.
2863 * 3) in the subsequent movie fragments, there are samples with composition time offset. */
2864 if (!sc->ctts_count && sc->sample_count)
2866 /* Complement ctts table if moov atom doesn't have ctts atom. */
2867 ctts_data = av_realloc(NULL, sizeof(*sc->ctts_data));
2869 return AVERROR(ENOMEM);
2870 sc->ctts_data = ctts_data;
2871 sc->ctts_data[sc->ctts_count].count = sc->sample_count;
2872 sc->ctts_data[sc->ctts_count].duration = 0;
2875 if ((uint64_t)entries+sc->ctts_count >= UINT_MAX/sizeof(*sc->ctts_data))
2876 return AVERROR_INVALIDDATA;
2877 if ((err = av_reallocp_array(&sc->ctts_data, entries + sc->ctts_count,
2878 sizeof(*sc->ctts_data))) < 0) {
2882 if (flags & MOV_TRUN_DATA_OFFSET) data_offset = avio_rb32(pb);
2883 if (flags & MOV_TRUN_FIRST_SAMPLE_FLAGS) first_sample_flags = avio_rb32(pb);
2884 dts = sc->track_end - sc->time_offset;
2885 offset = frag->base_data_offset + data_offset;
2887 av_log(c->fc, AV_LOG_TRACE, "first sample flags 0x%x\n", first_sample_flags);
2888 for (i = 0; i < entries && !pb->eof_reached; i++) {
2889 unsigned sample_size = frag->size;
2890 int sample_flags = i ? frag->flags : first_sample_flags;
2891 unsigned sample_duration = frag->duration;
2894 if (flags & MOV_TRUN_SAMPLE_DURATION) sample_duration = avio_rb32(pb);
2895 if (flags & MOV_TRUN_SAMPLE_SIZE) sample_size = avio_rb32(pb);
2896 if (flags & MOV_TRUN_SAMPLE_FLAGS) sample_flags = avio_rb32(pb);
2897 sc->ctts_data[sc->ctts_count].count = 1;
2898 sc->ctts_data[sc->ctts_count].duration = (flags & MOV_TRUN_SAMPLE_CTS) ?
2901 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
2905 !(sample_flags & (MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC |
2906 MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES));
2909 av_add_index_entry(st, offset, dts, sample_size, distance,
2910 keyframe ? AVINDEX_KEYFRAME : 0);
2911 av_log(c->fc, AV_LOG_TRACE, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
2912 "size %d, distance %d, keyframe %d\n", st->index, sc->sample_count+i,
2913 offset, dts, sample_size, distance, keyframe);
2915 dts += sample_duration;
2916 offset += sample_size;
2917 sc->data_size += sample_size;
2920 if (pb->eof_reached)
2923 frag->implicit_offset = offset;
2924 st->duration = sc->track_end = dts + sc->time_offset;
2928 /* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
2929 /* like the files created with Adobe Premiere 5.0, for samples see */
2930 /* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
2931 static int mov_read_wide(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2936 return 0; /* continue */
2937 if (avio_rb32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
2938 avio_skip(pb, atom.size - 4);
2941 atom.type = avio_rl32(pb);
2943 if (atom.type != MKTAG('m','d','a','t')) {
2944 avio_skip(pb, atom.size);
2947 err = mov_read_mdat(c, pb, atom);
2951 static int mov_read_cmov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2956 uint8_t *moov_data; /* uncompressed data */
2957 long cmov_len, moov_len;
2960 avio_rb32(pb); /* dcom atom */
2961 if (avio_rl32(pb) != MKTAG('d','c','o','m'))
2962 return AVERROR_INVALIDDATA;
2963 if (avio_rl32(pb) != MKTAG('z','l','i','b')) {
2964 av_log(c->fc, AV_LOG_ERROR, "unknown compression for cmov atom !");
2965 return AVERROR_INVALIDDATA;
2967 avio_rb32(pb); /* cmvd atom */
2968 if (avio_rl32(pb) != MKTAG('c','m','v','d'))
2969 return AVERROR_INVALIDDATA;
2970 moov_len = avio_rb32(pb); /* uncompressed size */
2971 cmov_len = atom.size - 6 * 4;
2973 cmov_data = av_malloc(cmov_len);
2975 return AVERROR(ENOMEM);
2976 moov_data = av_malloc(moov_len);
2979 return AVERROR(ENOMEM);
2981 ret = ffio_read_size(pb, cmov_data, cmov_len);
2983 goto free_and_return;
2985 if (uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
2986 goto free_and_return;
2987 if (ffio_init_context(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
2988 goto free_and_return;
2989 atom.type = MKTAG('m','o','o','v');
2990 atom.size = moov_len;
2991 ret = mov_read_default(c, &ctx, atom);
2997 av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
2998 return AVERROR(ENOSYS);
3002 /* edit list atom */
3003 static int mov_read_elst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
3005 MOVStreamContext *sc;
3006 int i, edit_count, version;
3008 if (c->fc->nb_streams < 1)
3010 sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
3012 version = avio_r8(pb); /* version */
3013 avio_rb24(pb); /* flags */
3014 edit_count = avio_rb32(pb); /* entries */
3016 if ((uint64_t)edit_count*12+8 > atom.size)
3017 return AVERROR_INVALIDDATA;
3019 for (i=0; i<edit_count; i++){
3023 duration = avio_rb64(pb);
3024 time = avio_rb64(pb);
3026 duration = avio_rb32(pb); /* segment duration */
3027 time = (int32_t)avio_rb32(pb); /* media time */
3029 avio_rb32(pb); /* Media rate */
3030 if (i == 0 && time >= -1) {
3031 sc->time_offset = time != -1 ? time : -duration;
3036 av_log(c->fc, AV_LOG_WARNING, "multiple edit list entries, "
3037 "a/v desync might occur, patch welcome\n");
3039 av_log(c->fc, AV_LOG_TRACE, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, edit_count);
3043 static const MOVParseTableEntry mov_default_parse_table[] = {
3044 { MKTAG('a','v','s','s'), mov_read_extradata },
3045 { MKTAG('c','h','p','l'), mov_read_chpl },
3046 { MKTAG('c','o','6','4'), mov_read_stco },
3047 { MKTAG('c','o','l','r'), mov_read_colr },
3048 { MKTAG('c','t','t','s'), mov_read_ctts }, /* composition time to sample */
3049 { MKTAG('d','i','n','f'), mov_read_default },
3050 { MKTAG('d','r','e','f'), mov_read_dref },
3051 { MKTAG('e','d','t','s'), mov_read_default },
3052 { MKTAG('e','l','s','t'), mov_read_elst },
3053 { MKTAG('e','n','d','a'), mov_read_enda },
3054 { MKTAG('f','i','e','l'), mov_read_fiel },
3055 { MKTAG('f','t','y','p'), mov_read_ftyp },
3056 { MKTAG('g','l','b','l'), mov_read_glbl },
3057 { MKTAG('h','d','l','r'), mov_read_hdlr },
3058 { MKTAG('i','l','s','t'), mov_read_ilst },
3059 { MKTAG('j','p','2','h'), mov_read_extradata },
3060 { MKTAG('m','d','a','t'), mov_read_mdat },
3061 { MKTAG('m','d','h','d'), mov_read_mdhd },
3062 { MKTAG('m','d','i','a'), mov_read_default },
3063 { MKTAG('m','e','t','a'), mov_read_meta },
3064 { MKTAG('m','i','n','f'), mov_read_default },
3065 { MKTAG('m','o','o','f'), mov_read_moof },
3066 { MKTAG('m','o','o','v'), mov_read_moov },
3067 { MKTAG('m','v','e','x'), mov_read_default },
3068 { MKTAG('m','v','h','d'), mov_read_mvhd },
3069 { MKTAG('S','M','I',' '), mov_read_smi }, /* Sorenson extension ??? */
3070 { MKTAG('a','l','a','c'), mov_read_extradata }, /* alac specific atom */
3071 { MKTAG('a','v','c','C'), mov_read_glbl },
3072 { MKTAG('p','a','s','p'), mov_read_pasp },
3073 { MKTAG('s','t','b','l'), mov_read_default },
3074 { MKTAG('s','t','c','o'), mov_read_stco },
3075 { MKTAG('s','t','p','s'), mov_read_stps },
3076 { MKTAG('s','t','r','f'), mov_read_strf },
3077 { MKTAG('s','t','s','c'), mov_read_stsc },
3078 { MKTAG('s','t','s','d'), mov_read_stsd }, /* sample description */
3079 { MKTAG('s','t','s','s'), mov_read_stss }, /* sync sample */
3080 { MKTAG('s','t','s','z'), mov_read_stsz }, /* sample size */
3081 { MKTAG('s','t','t','s'), mov_read_stts },
3082 { MKTAG('s','t','z','2'), mov_read_stsz }, /* compact sample size */
3083 { MKTAG('t','k','h','d'), mov_read_tkhd }, /* track header */
3084 { MKTAG('t','f','d','t'), mov_read_tfdt },
3085 { MKTAG('t','f','h','d'), mov_read_tfhd }, /* track fragment header */
3086 { MKTAG('t','r','a','k'), mov_read_trak },
3087 { MKTAG('t','r','a','f'), mov_read_default },
3088 { MKTAG('t','r','e','f'), mov_read_default },
3089 { MKTAG('c','h','a','p'), mov_read_chap },
3090 { MKTAG('t','r','e','x'), mov_read_trex },
3091 { MKTAG('t','r','u','n'), mov_read_trun },
3092 { MKTAG('u','d','t','a'), mov_read_default },
3093 { MKTAG('w','a','v','e'), mov_read_wave },
3094 { MKTAG('e','s','d','s'), mov_read_esds },
3095 { MKTAG('d','a','c','3'), mov_read_dac3 }, /* AC-3 info */
3096 { MKTAG('d','e','c','3'), mov_read_dec3 }, /* EAC-3 info */
3097 { MKTAG('w','i','d','e'), mov_read_wide }, /* place holder */
3098 { MKTAG('w','f','e','x'), mov_read_wfex },
3099 { MKTAG('c','m','o','v'), mov_read_cmov },
3100 { MKTAG('c','h','a','n'), mov_read_chan }, /* channel layout */
3101 { MKTAG('d','v','c','1'), mov_read_dvc1 },
3102 { MKTAG('s','b','g','p'), mov_read_sbgp },
3103 { MKTAG('h','v','c','C'), mov_read_glbl },
3104 { MKTAG('-','-','-','-'), mov_read_custom },
3108 static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom)
3110 int64_t total_size = 0;
3115 atom.size = INT64_MAX;
3116 while (total_size + 8 < atom.size && !pb->eof_reached) {
3117 int (*parse)(MOVContext*, AVIOContext*, MOVAtom) = NULL;
3120 if (atom.size >= 8) {
3121 a.size = avio_rb32(pb);
3122 a.type = avio_rl32(pb);
3124 av_log(c->fc, AV_LOG_TRACE, "type: %08x '%.4s' parent:'%.4s' sz: %"PRId64" %"PRId64" %"PRId64"\n",
3125 a.type, (char*)&a.type, (char*)&atom.type, a.size, total_size, atom.size);
3127 if (a.size == 1) { /* 64 bit extended size */
3128 a.size = avio_rb64(pb) - 8;
3132 a.size = atom.size - total_size;
3139 a.size = FFMIN(a.size, atom.size - total_size);
3141 for (i = 0; mov_default_parse_table[i].type; i++)
3142 if (mov_default_parse_table[i].type == a.type) {
3143 parse = mov_default_parse_table[i].parse;
3147 // container is user data
3148 if (!parse && (atom.type == MKTAG('u','d','t','a') ||
3149 atom.type == MKTAG('i','l','s','t')))
3150 parse = mov_read_udta_string;
3152 if (!parse) { /* skip leaf atoms data */
3153 avio_skip(pb, a.size);
3155 int64_t start_pos = avio_tell(pb);
3157 int err = parse(c, pb, a);
3160 if (c->found_moov && c->found_mdat &&
3161 ((!pb->seekable || c->fc->flags & AVFMT_FLAG_IGNIDX) ||
3162 start_pos + a.size == avio_size(pb))) {
3163 if (!pb->seekable || c->fc->flags & AVFMT_FLAG_IGNIDX)
3164 c->next_root_atom = start_pos + a.size;
3167 left = a.size - avio_tell(pb) + start_pos;
3168 if (left > 0) /* skip garbage at atom end */
3169 avio_skip(pb, left);
3170 else if (left < 0) {
3171 av_log(c->fc, AV_LOG_WARNING,
3172 "overread end of atom '%.4s' by %"PRId64" bytes\n",
3173 (char*)&a.type, -left);
3174 avio_seek(pb, left, SEEK_CUR);
3178 total_size += a.size;
3181 if (total_size < atom.size && atom.size < 0x7ffff)
3182 avio_skip(pb, atom.size - total_size);
3187 static int mov_probe(AVProbeData *p)
3189 unsigned int offset;
3193 /* check file header */
3196 /* ignore invalid offset */
3197 if ((offset + 8) > (unsigned int)p->buf_size)
3199 tag = AV_RL32(p->buf + offset + 4);
3201 /* check for obvious tags */
3202 case MKTAG('j','P',' ',' '): /* jpeg 2000 signature */
3203 case MKTAG('m','o','o','v'):
3204 case MKTAG('m','d','a','t'):
3205 case MKTAG('p','n','o','t'): /* detect movs with preview pics like ew.mov and april.mov */
3206 case MKTAG('u','d','t','a'): /* Packet Video PVAuthor adds this and a lot of more junk */
3207 case MKTAG('f','t','y','p'):
3208 return AVPROBE_SCORE_MAX;
3209 /* those are more common words, so rate then a bit less */
3210 case MKTAG('e','d','i','w'): /* xdcam files have reverted first tags */
3211 case MKTAG('w','i','d','e'):
3212 case MKTAG('f','r','e','e'):
3213 case MKTAG('j','u','n','k'):
3214 case MKTAG('p','i','c','t'):
3215 return AVPROBE_SCORE_MAX - 5;
3216 case MKTAG(0x82,0x82,0x7f,0x7d):
3217 case MKTAG('s','k','i','p'):
3218 case MKTAG('u','u','i','d'):
3219 case MKTAG('p','r','f','l'):
3220 offset = AV_RB32(p->buf+offset) + offset;
3221 /* if we only find those cause probedata is too small at least rate them */
3222 score = AVPROBE_SCORE_EXTENSION;
3225 /* unrecognized tag */
3231 // must be done after parsing all trak because there's no order requirement
3232 static void mov_read_chapters(AVFormatContext *s)
3234 MOVContext *mov = s->priv_data;
3235 AVStream *st = NULL;
3236 MOVStreamContext *sc;
3240 for (i = 0; i < s->nb_streams; i++)
3241 if (s->streams[i]->id == mov->chapter_track) {
3246 av_log(s, AV_LOG_ERROR, "Referenced QT chapter track not found\n");
3250 st->discard = AVDISCARD_ALL;
3252 cur_pos = avio_tell(sc->pb);
3254 for (i = 0; i < st->nb_index_entries; i++) {
3255 AVIndexEntry *sample = &st->index_entries[i];
3256 int64_t end = i+1 < st->nb_index_entries ? st->index_entries[i+1].timestamp : st->duration;
3261 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
3262 av_log(s, AV_LOG_ERROR, "Chapter %d not found in file\n", i);
3266 // the first two bytes are the length of the title
3267 len = avio_rb16(sc->pb);
3268 if (len > sample->size-2)
3270 title_len = 2*len + 1;
3271 if (!(title = av_mallocz(title_len)))
3274 // The samples could theoretically be in any encoding if there's an encd
3275 // atom following, but in practice are only utf-8 or utf-16, distinguished
3276 // instead by the presence of a BOM
3280 ch = avio_rb16(sc->pb);
3282 avio_get_str16be(sc->pb, len, title, title_len);
3283 else if (ch == 0xfffe)
3284 avio_get_str16le(sc->pb, len, title, title_len);
3287 if (len == 1 || len == 2)
3290 avio_get_str(sc->pb, len - 2, title + 2, title_len - 2);
3294 avpriv_new_chapter(s, i, st->time_base, sample->timestamp, end, title);
3298 avio_seek(sc->pb, cur_pos, SEEK_SET);
3301 static int mov_read_close(AVFormatContext *s)
3303 MOVContext *mov = s->priv_data;
3306 for (i = 0; i < s->nb_streams; i++) {
3307 AVStream *st = s->streams[i];
3308 MOVStreamContext *sc = st->priv_data;
3310 av_freep(&sc->ctts_data);
3311 for (j = 0; j < sc->drefs_count; j++) {
3312 av_freep(&sc->drefs[j].path);
3313 av_freep(&sc->drefs[j].dir);
3315 av_freep(&sc->drefs);
3316 if (sc->pb && sc->pb != s->pb)
3319 av_freep(&sc->chunk_offsets);
3320 av_freep(&sc->stsc_data);
3321 av_freep(&sc->sample_sizes);
3322 av_freep(&sc->keyframes);
3323 av_freep(&sc->stts_data);
3324 av_freep(&sc->stps_data);
3325 av_freep(&sc->rap_group);
3326 av_freep(&sc->display_matrix);
3329 if (mov->dv_demux) {
3330 avformat_free_context(mov->dv_fctx);
3331 mov->dv_fctx = NULL;
3334 av_freep(&mov->trex_data);
3339 static int mov_read_header(AVFormatContext *s)
3341 MOVContext *mov = s->priv_data;
3342 AVIOContext *pb = s->pb;
3344 MOVAtom atom = { AV_RL32("root") };
3348 /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
3350 atom.size = avio_size(pb);
3352 atom.size = INT64_MAX;
3354 /* check MOV header */
3355 if ((err = mov_read_default(mov, pb, atom)) < 0) {
3356 av_log(s, AV_LOG_ERROR, "error reading header: %d\n", err);
3360 if (!mov->found_moov) {
3361 av_log(s, AV_LOG_ERROR, "moov atom not found\n");
3363 return AVERROR_INVALIDDATA;
3365 av_log(mov->fc, AV_LOG_TRACE, "on_parse_exit_offset=%"PRId64"\n", avio_tell(pb));
3367 if (pb->seekable && mov->chapter_track > 0)
3368 mov_read_chapters(s);
3370 for (i = 0; i < s->nb_streams; i++) {
3371 AVStream *st = s->streams[i];
3372 MOVStreamContext *sc = st->priv_data;
3374 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3375 if (st->codec->width <= 0 || st->codec->height <= 0) {
3376 st->codec->width = sc->width;
3377 st->codec->height = sc->height;
3379 if (st->codec->codec_id == AV_CODEC_ID_DVD_SUBTITLE) {
3380 if ((err = mov_rewrite_dvd_sub_extradata(st)) < 0)
3386 if (mov->trex_data) {
3387 for (i = 0; i < s->nb_streams; i++) {
3388 AVStream *st = s->streams[i];
3389 MOVStreamContext *sc = st->priv_data;
3390 if (st->duration > 0)
3391 st->codec->bit_rate = sc->data_size * 8 * sc->time_scale / st->duration;
3395 for (i = 0; i < s->nb_streams; i++) {
3396 AVStream *st = s->streams[i];
3397 MOVStreamContext *sc = st->priv_data;
3399 switch (st->codec->codec_type) {
3400 case AVMEDIA_TYPE_AUDIO:
3401 err = ff_replaygain_export(st, s->metadata);
3407 case AVMEDIA_TYPE_VIDEO:
3408 if (sc->display_matrix) {
3409 AVPacketSideData *sd, *tmp;
3411 tmp = av_realloc_array(st->side_data,
3412 st->nb_side_data + 1, sizeof(*tmp));
3414 return AVERROR(ENOMEM);
3416 st->side_data = tmp;
3419 sd = &st->side_data[st->nb_side_data - 1];
3420 sd->type = AV_PKT_DATA_DISPLAYMATRIX;
3421 sd->size = sizeof(int32_t) * 9;
3422 sd->data = (uint8_t*)sc->display_matrix;
3423 sc->display_matrix = NULL;
3432 static AVIndexEntry *mov_find_next_sample(AVFormatContext *s, AVStream **st)
3434 AVIndexEntry *sample = NULL;
3435 int64_t best_dts = INT64_MAX;
3437 for (i = 0; i < s->nb_streams; i++) {
3438 AVStream *avst = s->streams[i];
3439 MOVStreamContext *msc = avst->priv_data;
3440 if (msc->pb && msc->current_sample < avst->nb_index_entries) {
3441 AVIndexEntry *current_sample = &avst->index_entries[msc->current_sample];
3442 int64_t dts = av_rescale(current_sample->timestamp, AV_TIME_BASE, msc->time_scale);
3443 av_log(s, AV_LOG_TRACE, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
3444 if (!sample || (!s->pb->seekable && current_sample->pos < sample->pos) ||
3446 ((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb &&
3447 ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
3448 (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) {
3449 sample = current_sample;
3458 static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
3460 MOVContext *mov = s->priv_data;
3461 MOVStreamContext *sc;
3462 AVIndexEntry *sample;
3463 AVStream *st = NULL;
3466 sample = mov_find_next_sample(s, &st);
3468 mov->found_mdat = 0;
3469 if (!mov->next_root_atom)
3471 avio_seek(s->pb, mov->next_root_atom, SEEK_SET);
3472 mov->next_root_atom = 0;
3473 if (mov_read_default(mov, s->pb, (MOVAtom){ AV_RL32("root"), INT64_MAX }) < 0 ||
3476 av_log(s, AV_LOG_TRACE, "read fragments, offset 0x%"PRIx64"\n", avio_tell(s->pb));
3480 /* must be done just before reading, to avoid infinite loop on sample */
3481 sc->current_sample++;
3483 if (st->discard != AVDISCARD_ALL) {
3484 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
3485 av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
3486 sc->ffindex, sample->pos);
3487 return AVERROR_INVALIDDATA;
3489 ret = av_get_packet(sc->pb, pkt, sample->size);
3492 if (sc->has_palette) {
3495 pal = av_packet_new_side_data(pkt, AV_PKT_DATA_PALETTE, AVPALETTE_SIZE);
3497 av_log(mov->fc, AV_LOG_ERROR, "Cannot append palette to packet\n");
3499 memcpy(pal, sc->palette, AVPALETTE_SIZE);
3500 sc->has_palette = 0;
3503 #if CONFIG_DV_DEMUXER
3504 if (mov->dv_demux && sc->dv_audio_container) {
3505 avpriv_dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size);
3508 ret = avpriv_dv_get_packet(mov->dv_demux, pkt);
3515 pkt->stream_index = sc->ffindex;
3516 pkt->dts = sample->timestamp;
3517 if (sc->ctts_data && sc->ctts_index < sc->ctts_count) {
3518 pkt->pts = pkt->dts + sc->dts_shift + sc->ctts_data[sc->ctts_index].duration;
3519 /* update ctts context */
3521 if (sc->ctts_index < sc->ctts_count &&
3522 sc->ctts_data[sc->ctts_index].count == sc->ctts_sample) {
3524 sc->ctts_sample = 0;
3527 pkt->dts = AV_NOPTS_VALUE;
3529 int64_t next_dts = (sc->current_sample < st->nb_index_entries) ?
3530 st->index_entries[sc->current_sample].timestamp : st->duration;
3531 pkt->duration = next_dts - pkt->dts;
3532 pkt->pts = pkt->dts;
3534 if (st->discard == AVDISCARD_ALL)
3536 pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? AV_PKT_FLAG_KEY : 0;
3537 pkt->pos = sample->pos;
3538 av_log(s, AV_LOG_TRACE, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %"PRId64"\n",
3539 pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
3543 static int mov_seek_stream(AVFormatContext *s, AVStream *st, int64_t timestamp, int flags)
3545 MOVStreamContext *sc = st->priv_data;
3546 int sample, time_sample;
3549 sample = av_index_search_timestamp(st, timestamp, flags);
3550 av_log(s, AV_LOG_TRACE, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
3551 if (sample < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
3553 if (sample < 0) /* not sure what to do */
3554 return AVERROR_INVALIDDATA;
3555 sc->current_sample = sample;
3556 av_log(s, AV_LOG_TRACE, "stream %d, found sample %d\n", st->index, sc->current_sample);
3557 /* adjust ctts index */
3558 if (sc->ctts_data) {
3560 for (i = 0; i < sc->ctts_count; i++) {
3561 int next = time_sample + sc->ctts_data[i].count;
3562 if (next > sc->current_sample) {
3564 sc->ctts_sample = sc->current_sample - time_sample;
3573 static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
3575 MOVContext *mc = s->priv_data;
3580 if (stream_index >= s->nb_streams)
3581 return AVERROR_INVALIDDATA;
3582 if (sample_time < 0)
3585 st = s->streams[stream_index];
3586 sample = mov_seek_stream(s, st, sample_time, flags);
3590 if (mc->seek_individually) {
3591 /* adjust seek timestamp to found sample timestamp */
3592 int64_t seek_timestamp = st->index_entries[sample].timestamp;
3594 for (i = 0; i < s->nb_streams; i++) {
3597 if (stream_index == i)
3600 timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
3601 mov_seek_stream(s, st, timestamp, flags);
3604 for (i = 0; i < s->nb_streams; i++) {
3605 MOVStreamContext *sc;
3608 sc->current_sample = 0;
3611 MOVStreamContext *sc;
3612 AVIndexEntry *entry = mov_find_next_sample(s, &st);
3614 return AVERROR_INVALIDDATA;
3616 if (sc->ffindex == stream_index && sc->current_sample == sample)
3618 sc->current_sample++;
3624 #define OFFSET(x) offsetof(MOVContext, x)
3625 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
3626 static const AVOption mov_options[] = {
3627 {"seek_streams_individually",
3628 "Seek each stream individually to the to the closest point",
3629 OFFSET(seek_individually), AV_OPT_TYPE_INT, { .i64 = 1 },
3631 { "export_all", "Export unrecognized metadata entries", OFFSET(export_all),
3632 AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, .flags = FLAGS },
3633 { "export_xmp", "Export full XMP metadata", OFFSET(export_xmp),
3634 AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, .flags = FLAGS },
3638 static const AVClass mov_class = {
3639 .class_name = "mov,mp4,m4a,3gp,3g2,mj2",
3640 .item_name = av_default_item_name,
3641 .option = mov_options,
3642 .version = LIBAVUTIL_VERSION_INT,
3645 AVInputFormat ff_mov_demuxer = {
3646 .name = "mov,mp4,m4a,3gp,3g2,mj2",
3647 .long_name = NULL_IF_CONFIG_SMALL("QuickTime / MOV"),
3648 .priv_class = &mov_class,
3649 .priv_data_size = sizeof(MOVContext),
3650 .extensions = "mov,mp4,m4a,3gp,3g2,mj2",
3651 .read_probe = mov_probe,
3652 .read_header = mov_read_header,
3653 .read_packet = mov_read_packet,
3654 .read_close = mov_read_close,
3655 .read_seek = mov_read_seek,