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"
57 /* those functions parse an atom */
58 /* links atom IDs to parse functions */
59 typedef struct MOVParseTableEntry {
61 int (*parse)(MOVContext *ctx, AVIOContext *pb, MOVAtom atom);
64 static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom);
66 static int mov_metadata_track_or_disc_number(MOVContext *c, AVIOContext *pb,
67 unsigned len, const char *key)
71 short current, total = 0;
72 avio_rb16(pb); // unknown
73 current = avio_rb16(pb);
75 total = avio_rb16(pb);
77 snprintf(buf, sizeof(buf), "%d", current);
79 snprintf(buf, sizeof(buf), "%d/%d", current, total);
80 c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
81 av_dict_set(&c->fc->metadata, key, buf, 0);
86 static int mov_metadata_int8_bypass_padding(MOVContext *c, AVIOContext *pb,
87 unsigned len, const char *key)
91 /* bypass padding bytes */
96 snprintf(buf, sizeof(buf), "%d", avio_r8(pb));
97 c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
98 av_dict_set(&c->fc->metadata, key, buf, 0);
103 static int mov_metadata_int8_no_padding(MOVContext *c, AVIOContext *pb,
104 unsigned len, const char *key)
108 snprintf(buf, sizeof(buf), "%d", avio_r8(pb));
109 c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
110 av_dict_set(&c->fc->metadata, key, buf, 0);
115 static int mov_metadata_gnre(MOVContext *c, AVIOContext *pb,
116 unsigned len, const char *key)
121 avio_r8(pb); // unknown
124 if (genre < 1 || genre > ID3v1_GENRE_MAX)
126 snprintf(buf, sizeof(buf), "%s", ff_id3v1_genre_str[genre-1]);
127 c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
128 av_dict_set(&c->fc->metadata, key, buf, 0);
133 static const uint32_t mac_to_unicode[128] = {
134 0x00C4,0x00C5,0x00C7,0x00C9,0x00D1,0x00D6,0x00DC,0x00E1,
135 0x00E0,0x00E2,0x00E4,0x00E3,0x00E5,0x00E7,0x00E9,0x00E8,
136 0x00EA,0x00EB,0x00ED,0x00EC,0x00EE,0x00EF,0x00F1,0x00F3,
137 0x00F2,0x00F4,0x00F6,0x00F5,0x00FA,0x00F9,0x00FB,0x00FC,
138 0x2020,0x00B0,0x00A2,0x00A3,0x00A7,0x2022,0x00B6,0x00DF,
139 0x00AE,0x00A9,0x2122,0x00B4,0x00A8,0x2260,0x00C6,0x00D8,
140 0x221E,0x00B1,0x2264,0x2265,0x00A5,0x00B5,0x2202,0x2211,
141 0x220F,0x03C0,0x222B,0x00AA,0x00BA,0x03A9,0x00E6,0x00F8,
142 0x00BF,0x00A1,0x00AC,0x221A,0x0192,0x2248,0x2206,0x00AB,
143 0x00BB,0x2026,0x00A0,0x00C0,0x00C3,0x00D5,0x0152,0x0153,
144 0x2013,0x2014,0x201C,0x201D,0x2018,0x2019,0x00F7,0x25CA,
145 0x00FF,0x0178,0x2044,0x20AC,0x2039,0x203A,0xFB01,0xFB02,
146 0x2021,0x00B7,0x201A,0x201E,0x2030,0x00C2,0x00CA,0x00C1,
147 0x00CB,0x00C8,0x00CD,0x00CE,0x00CF,0x00CC,0x00D3,0x00D4,
148 0xF8FF,0x00D2,0x00DA,0x00DB,0x00D9,0x0131,0x02C6,0x02DC,
149 0x00AF,0x02D8,0x02D9,0x02DA,0x00B8,0x02DD,0x02DB,0x02C7,
152 static int mov_read_mac_string(MOVContext *c, AVIOContext *pb, int len,
153 char *dst, int dstlen)
156 char *end = dst+dstlen-1;
159 for (i = 0; i < len; i++) {
160 uint8_t t, c = avio_r8(pb);
161 if (c < 0x80 && p < end)
164 PUT_UTF8(mac_to_unicode[c-0x80], t, if (p < end) *p++ = t;);
170 static int mov_read_covr(MOVContext *c, AVIOContext *pb, int type, int len)
174 MOVStreamContext *sc;
179 case 0xd: id = AV_CODEC_ID_MJPEG; break;
180 case 0xe: id = AV_CODEC_ID_PNG; break;
181 case 0x1b: id = AV_CODEC_ID_BMP; break;
183 av_log(c->fc, AV_LOG_WARNING, "Unknown cover type: 0x%x.\n", type);
188 st = avformat_new_stream(c->fc, NULL);
190 return AVERROR(ENOMEM);
191 sc = av_mallocz(sizeof(*sc));
193 return AVERROR(ENOMEM);
196 ret = av_get_packet(pb, &pkt, len);
200 if (pkt.size >= 8 && id != AV_CODEC_ID_BMP) {
201 if (AV_RB64(pkt.data) == 0x89504e470d0a1a0a) {
202 id = AV_CODEC_ID_PNG;
204 id = AV_CODEC_ID_MJPEG;
208 st->disposition |= AV_DISPOSITION_ATTACHED_PIC;
210 st->attached_pic = pkt;
211 st->attached_pic.stream_index = st->index;
212 st->attached_pic.flags |= AV_PKT_FLAG_KEY;
214 st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
215 st->codecpar->codec_id = id;
221 static int mov_metadata_loci(MOVContext *c, AVIOContext *pb, unsigned len)
223 char language[4] = { 0 };
225 uint16_t langcode = 0;
226 double longitude, latitude;
227 const char *key = "location";
229 if (len < 4 + 2 + 1 + 1 + 4 + 4 + 4) {
230 av_log(c->fc, AV_LOG_ERROR, "loci too short\n");
231 return AVERROR_INVALIDDATA;
234 avio_skip(pb, 4); // version+flags
235 langcode = avio_rb16(pb);
236 ff_mov_lang_to_iso639(langcode, language);
239 len -= avio_get_str(pb, len, buf, sizeof(buf)); // place name
241 av_log(c->fc, AV_LOG_ERROR, "place name too long\n");
242 return AVERROR_INVALIDDATA;
244 avio_skip(pb, 1); // role
248 av_log(c->fc, AV_LOG_ERROR,
249 "loci too short (%u bytes left, need at least %d)\n", len, 14);
250 return AVERROR_INVALIDDATA;
252 longitude = ((int32_t) avio_rb32(pb)) / (float) (1 << 16);
253 latitude = ((int32_t) avio_rb32(pb)) / (float) (1 << 16);
255 // Try to output in the same format as the ?xyz field
256 snprintf(buf, sizeof(buf), "%+08.4f%+09.4f/", latitude, longitude);
257 if (*language && strcmp(language, "und")) {
259 snprintf(key2, sizeof(key2), "%s-%s", key, language);
260 av_dict_set(&c->fc->metadata, key2, buf, 0);
262 c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
263 return av_dict_set(&c->fc->metadata, key, buf, 0);
266 static int mov_read_udta_string(MOVContext *c, AVIOContext *pb, MOVAtom atom)
269 char *str, key2[32], language[4] = {0};
270 const char *key = NULL;
271 uint16_t langcode = 0;
272 uint32_t data_type = 0, str_size, str_size_alloc;
273 int (*parse)(MOVContext*, AVIOContext*, unsigned, const char*) = NULL;
277 case MKTAG( '@','P','R','M'): key = "premiere_version"; raw = 1; break;
278 case MKTAG( '@','P','R','Q'): key = "quicktime_version"; raw = 1; break;
279 case MKTAG( 'X','M','P','_'):
280 if (c->export_xmp) { key = "xmp"; raw = 1; } break;
281 case MKTAG( 'a','A','R','T'): key = "album_artist"; break;
282 case MKTAG( 'a','k','I','D'): key = "account_type";
283 parse = mov_metadata_int8_no_padding; break;
284 case MKTAG( 'a','p','I','D'): key = "account_id"; break;
285 case MKTAG( 'c','a','t','g'): key = "category"; break;
286 case MKTAG( 'c','p','i','l'): key = "compilation";
287 parse = mov_metadata_int8_no_padding; break;
288 case MKTAG( 'c','p','r','t'): key = "copyright"; break;
289 case MKTAG( 'd','e','s','c'): key = "description"; break;
290 case MKTAG( 'd','i','s','k'): key = "disc";
291 parse = mov_metadata_track_or_disc_number; break;
292 case MKTAG( 'e','g','i','d'): key = "episode_uid";
293 parse = mov_metadata_int8_no_padding; break;
294 case MKTAG( 'g','n','r','e'): key = "genre";
295 parse = mov_metadata_gnre; break;
296 case MKTAG( 'h','d','v','d'): key = "hd_video";
297 parse = mov_metadata_int8_no_padding; break;
298 case MKTAG( 'k','e','y','w'): key = "keywords"; break;
299 case MKTAG( 'l','d','e','s'): key = "synopsis"; break;
300 case MKTAG( 'l','o','c','i'):
301 return mov_metadata_loci(c, pb, atom.size);
302 case MKTAG( 'p','c','s','t'): key = "podcast";
303 parse = mov_metadata_int8_no_padding; break;
304 case MKTAG( 'p','g','a','p'): key = "gapless_playback";
305 parse = mov_metadata_int8_no_padding; break;
306 case MKTAG( 'p','u','r','d'): key = "purchase_date"; break;
307 case MKTAG( 'r','t','n','g'): key = "rating";
308 parse = mov_metadata_int8_no_padding; break;
309 case MKTAG( 's','o','a','a'): key = "sort_album_artist"; break;
310 case MKTAG( 's','o','a','l'): key = "sort_album"; break;
311 case MKTAG( 's','o','a','r'): key = "sort_artist"; break;
312 case MKTAG( 's','o','c','o'): key = "sort_composer"; break;
313 case MKTAG( 's','o','n','m'): key = "sort_name"; break;
314 case MKTAG( 's','o','s','n'): key = "sort_show"; break;
315 case MKTAG( 's','t','i','k'): key = "media_type";
316 parse = mov_metadata_int8_no_padding; break;
317 case MKTAG( 't','r','k','n'): key = "track";
318 parse = mov_metadata_track_or_disc_number; break;
319 case MKTAG( 't','v','e','n'): key = "episode_id"; break;
320 case MKTAG( 't','v','e','s'): key = "episode_sort";
321 parse = mov_metadata_int8_bypass_padding; break;
322 case MKTAG( 't','v','n','n'): key = "network"; break;
323 case MKTAG( 't','v','s','h'): key = "show"; break;
324 case MKTAG( 't','v','s','n'): key = "season_number";
325 parse = mov_metadata_int8_bypass_padding; break;
326 case MKTAG(0xa9,'A','R','T'): key = "artist"; break;
327 case MKTAG(0xa9,'P','R','D'): key = "producer"; break;
328 case MKTAG(0xa9,'a','l','b'): key = "album"; break;
329 case MKTAG(0xa9,'a','u','t'): key = "artist"; break;
330 case MKTAG(0xa9,'c','h','p'): key = "chapter"; break;
331 case MKTAG(0xa9,'c','m','t'): key = "comment"; break;
332 case MKTAG(0xa9,'c','o','m'): key = "composer"; break;
333 case MKTAG(0xa9,'c','p','y'): key = "copyright"; break;
334 case MKTAG(0xa9,'d','a','y'): key = "date"; break;
335 case MKTAG(0xa9,'d','i','r'): key = "director"; break;
336 case MKTAG(0xa9,'d','i','s'): key = "disclaimer"; break;
337 case MKTAG(0xa9,'e','d','1'): key = "edit_date"; break;
338 case MKTAG(0xa9,'e','n','c'): key = "encoder"; break;
339 case MKTAG(0xa9,'f','m','t'): key = "original_format"; break;
340 case MKTAG(0xa9,'g','e','n'): key = "genre"; break;
341 case MKTAG(0xa9,'g','r','p'): key = "grouping"; break;
342 case MKTAG(0xa9,'h','s','t'): key = "host_computer"; break;
343 case MKTAG(0xa9,'i','n','f'): key = "comment"; break;
344 case MKTAG(0xa9,'l','y','r'): key = "lyrics"; break;
345 case MKTAG(0xa9,'m','a','k'): key = "make"; break;
346 case MKTAG(0xa9,'m','o','d'): key = "model"; break;
347 case MKTAG(0xa9,'n','a','m'): key = "title"; break;
348 case MKTAG(0xa9,'o','p','e'): key = "original_artist"; break;
349 case MKTAG(0xa9,'p','r','d'): key = "producer"; break;
350 case MKTAG(0xa9,'p','r','f'): key = "performers"; break;
351 case MKTAG(0xa9,'r','e','q'): key = "playback_requirements"; break;
352 case MKTAG(0xa9,'s','r','c'): key = "original_source"; break;
353 case MKTAG(0xa9,'s','t','3'): key = "subtitle"; break;
354 case MKTAG(0xa9,'s','w','r'): key = "encoder"; break;
355 case MKTAG(0xa9,'t','o','o'): key = "encoder"; break;
356 case MKTAG(0xa9,'t','r','k'): key = "track"; break;
357 case MKTAG(0xa9,'u','r','l'): key = "URL"; break;
358 case MKTAG(0xa9,'w','r','n'): key = "warning"; break;
359 case MKTAG(0xa9,'w','r','t'): key = "composer"; break;
360 case MKTAG(0xa9,'x','y','z'): key = "location"; break;
363 if (c->itunes_metadata && atom.size > 8) {
364 int data_size = avio_rb32(pb);
365 int tag = avio_rl32(pb);
366 if (tag == MKTAG('d','a','t','a')) {
367 data_type = avio_rb32(pb); // type
368 avio_rb32(pb); // unknown
369 str_size = data_size - 16;
372 if (atom.type == MKTAG('c', 'o', 'v', 'r')) {
373 int ret = mov_read_covr(c, pb, data_type, str_size);
375 av_log(c->fc, AV_LOG_ERROR, "Error parsing cover art.\n");
380 } else if (atom.size > 4 && key && !c->itunes_metadata && !raw) {
381 str_size = avio_rb16(pb); // string length
382 langcode = avio_rb16(pb);
383 ff_mov_lang_to_iso639(langcode, language);
386 str_size = atom.size;
388 if (c->export_all && !key) {
389 snprintf(tmp_key, 5, "%.4s", (char*)&atom.type);
396 return AVERROR_INVALIDDATA;
398 // allocate twice as much as worst-case
399 str_size_alloc = (raw ? str_size : str_size * 2) + 1;
400 str = av_malloc(str_size_alloc);
402 return AVERROR(ENOMEM);
405 parse(c, pb, str_size, key);
407 if (!raw && (data_type == 3 || (data_type == 0 && (langcode < 0x400 || langcode == 0x7fff)))) { // MAC Encoded
408 mov_read_mac_string(c, pb, str_size, str, str_size_alloc);
410 int ret = ffio_read_size(pb, str, str_size);
417 c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
418 av_dict_set(&c->fc->metadata, key, str, 0);
419 if (*language && strcmp(language, "und")) {
420 snprintf(key2, sizeof(key2), "%s-%s", key, language);
421 av_dict_set(&c->fc->metadata, key2, str, 0);
424 av_log(c->fc, AV_LOG_TRACE, "lang \"%3s\" ", language);
425 av_log(c->fc, AV_LOG_TRACE, "tag \"%s\" value \"%s\" atom \"%.4s\" %d %"PRId64"\n",
426 key, str, (char*)&atom.type, str_size_alloc, atom.size);
432 static int mov_read_chpl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
435 int i, nb_chapters, str_len, version;
439 if ((atom.size -= 5) < 0)
442 version = avio_r8(pb);
445 avio_rb32(pb); // ???
446 nb_chapters = avio_r8(pb);
448 for (i = 0; i < nb_chapters; i++) {
452 start = avio_rb64(pb);
453 str_len = avio_r8(pb);
455 if ((atom.size -= 9+str_len) < 0)
458 ret = ffio_read_size(pb, str, str_len);
462 avpriv_new_chapter(c->fc, i, (AVRational){1,10000000}, start, AV_NOPTS_VALUE, str);
467 #define MIN_DATA_ENTRY_BOX_SIZE 12
468 static int mov_read_dref(MOVContext *c, AVIOContext *pb, MOVAtom atom)
471 MOVStreamContext *sc;
474 if (c->fc->nb_streams < 1)
476 st = c->fc->streams[c->fc->nb_streams-1];
479 avio_rb32(pb); // version + flags
480 entries = avio_rb32(pb);
482 entries > (atom.size - 1) / MIN_DATA_ENTRY_BOX_SIZE + 1 ||
483 entries >= UINT_MAX / sizeof(*sc->drefs))
484 return AVERROR_INVALIDDATA;
487 sc->drefs = av_mallocz(entries * sizeof(*sc->drefs));
489 return AVERROR(ENOMEM);
490 sc->drefs_count = entries;
492 for (i = 0; i < entries; i++) {
493 MOVDref *dref = &sc->drefs[i];
494 uint32_t size = avio_rb32(pb);
495 int64_t next = avio_tell(pb) + size - 4;
498 return AVERROR_INVALIDDATA;
500 dref->type = avio_rl32(pb);
501 avio_rb32(pb); // version + flags
502 av_log(c->fc, AV_LOG_TRACE, "type %.4s size %d\n", (char*)&dref->type, size);
504 if (dref->type == MKTAG('a','l','i','s') && size > 150) {
505 /* macintosh alias record */
506 uint16_t volume_len, len;
512 volume_len = avio_r8(pb);
513 volume_len = FFMIN(volume_len, 27);
514 ret = ffio_read_size(pb, dref->volume, 27);
517 dref->volume[volume_len] = 0;
518 av_log(c->fc, AV_LOG_DEBUG, "volume %s, len %d\n", dref->volume, volume_len);
523 len = FFMIN(len, 63);
524 ret = ffio_read_size(pb, dref->filename, 63);
527 dref->filename[len] = 0;
528 av_log(c->fc, AV_LOG_DEBUG, "filename %s, len %d\n", dref->filename, len);
532 /* read next level up_from_alias/down_to_target */
533 dref->nlvl_from = avio_rb16(pb);
534 dref->nlvl_to = avio_rb16(pb);
535 av_log(c->fc, AV_LOG_DEBUG, "nlvl from %d, nlvl to %d\n",
536 dref->nlvl_from, dref->nlvl_to);
540 for (type = 0; type != -1 && avio_tell(pb) < next; ) {
543 type = avio_rb16(pb);
545 av_log(c->fc, AV_LOG_DEBUG, "type %d, len %d\n", type, len);
548 if (type == 2) { // absolute path
550 dref->path = av_mallocz(len+1);
552 return AVERROR(ENOMEM);
554 ret = ffio_read_size(pb, dref->path, len);
556 av_freep(&dref->path);
559 if (len > volume_len && !strncmp(dref->path, dref->volume, volume_len)) {
561 memmove(dref->path, dref->path+volume_len, len);
564 // trim string of any ending zeros
565 for (j = len - 1; j >= 0; j--) {
566 if (dref->path[j] == 0)
571 for (j = 0; j < len; j++)
572 if (dref->path[j] == ':' || dref->path[j] == 0)
574 av_log(c->fc, AV_LOG_DEBUG, "path %s\n", dref->path);
575 } else if (type == 0) { // directory name
577 dref->dir = av_malloc(len+1);
579 return AVERROR(ENOMEM);
581 ret = ffio_read_size(pb, dref->dir, len);
583 av_freep(&dref->dir);
587 for (j = 0; j < len; j++)
588 if (dref->dir[j] == ':')
590 av_log(c->fc, AV_LOG_DEBUG, "dir %s\n", dref->dir);
595 av_log(c->fc, AV_LOG_DEBUG, "Unknown dref type 0x08%x size %d\n",
600 avio_seek(pb, next, SEEK_SET);
605 static int mov_read_hdlr(MOVContext *c, AVIOContext *pb, MOVAtom atom)
609 uint32_t av_unused ctype;
614 if (c->fc->nb_streams < 1) // meta before first trak
617 st = c->fc->streams[c->fc->nb_streams-1];
619 avio_r8(pb); /* version */
620 avio_rb24(pb); /* flags */
623 ctype = avio_rl32(pb);
624 type = avio_rl32(pb); /* component subtype */
626 av_log(c->fc, AV_LOG_TRACE, "ctype= %.4s (0x%08x)\n", (char*)&ctype, ctype);
627 av_log(c->fc, AV_LOG_TRACE, "stype= %.4s\n", (char*)&type);
629 if (type == MKTAG('v','i','d','e'))
630 st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
631 else if (type == MKTAG('s','o','u','n'))
632 st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
633 else if (type == MKTAG('m','1','a',' '))
634 st->codecpar->codec_id = AV_CODEC_ID_MP2;
635 else if ((type == MKTAG('s','u','b','p')) || (type == MKTAG('c','l','c','p')))
636 st->codecpar->codec_type = AVMEDIA_TYPE_SUBTITLE;
638 avio_rb32(pb); /* component manufacture */
639 avio_rb32(pb); /* component flags */
640 avio_rb32(pb); /* component flags mask */
642 title_size = atom.size - 24;
643 if (title_size > 0) {
644 title_str = av_malloc(title_size + 1); /* Add null terminator */
646 return AVERROR(ENOMEM);
648 ret = ffio_read_size(pb, title_str, title_size);
650 av_freep(&title_str);
653 title_str[title_size] = 0;
655 int off = (!c->isom && title_str[0] == title_size - 1);
656 av_dict_set(&st->metadata, "handler_name", title_str + off, 0);
658 av_freep(&title_str);
664 int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb)
669 if (fc->nb_streams < 1)
671 st = fc->streams[fc->nb_streams-1];
673 avio_rb32(pb); /* version + flags */
674 ff_mp4_read_descr(fc, pb, &tag);
675 if (tag == MP4ESDescrTag) {
676 ff_mp4_parse_es_descr(pb, NULL);
678 avio_rb16(pb); /* ID */
680 ff_mp4_read_descr(fc, pb, &tag);
681 if (tag == MP4DecConfigDescrTag)
682 ff_mp4_read_dec_config_descr(fc, st, pb);
686 static int mov_read_esds(MOVContext *c, AVIOContext *pb, MOVAtom atom)
688 return ff_mov_read_esds(c->fc, pb);
691 static int mov_read_dac3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
694 enum AVAudioServiceType *ast;
695 int ac3info, acmod, lfeon, bsmod;
697 if (c->fc->nb_streams < 1)
699 st = c->fc->streams[c->fc->nb_streams-1];
701 ast = (enum AVAudioServiceType*)av_stream_new_side_data(st, AV_PKT_DATA_AUDIO_SERVICE_TYPE,
704 return AVERROR(ENOMEM);
706 ac3info = avio_rb24(pb);
707 bsmod = (ac3info >> 14) & 0x7;
708 acmod = (ac3info >> 11) & 0x7;
709 lfeon = (ac3info >> 10) & 0x1;
710 st->codecpar->channels = ((int[]){2,1,2,3,3,4,4,5})[acmod] + lfeon;
711 st->codecpar->channel_layout = avpriv_ac3_channel_layout_tab[acmod];
713 st->codecpar->channel_layout |= AV_CH_LOW_FREQUENCY;
715 if (st->codecpar->channels > 1 && bsmod == 0x7)
716 *ast = AV_AUDIO_SERVICE_TYPE_KARAOKE;
718 #if FF_API_LAVF_AVCTX
719 FF_DISABLE_DEPRECATION_WARNINGS
720 st->codec->audio_service_type = *ast;
721 FF_ENABLE_DEPRECATION_WARNINGS
727 static int mov_read_dec3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
730 enum AVAudioServiceType *ast;
731 int eac3info, acmod, lfeon, bsmod;
733 if (c->fc->nb_streams < 1)
735 st = c->fc->streams[c->fc->nb_streams-1];
737 ast = (enum AVAudioServiceType*)av_stream_new_side_data(st, AV_PKT_DATA_AUDIO_SERVICE_TYPE,
740 return AVERROR(ENOMEM);
742 /* No need to parse fields for additional independent substreams and its
743 * associated dependent substreams since libavcodec's E-AC-3 decoder
744 * does not support them yet. */
745 avio_rb16(pb); /* data_rate and num_ind_sub */
746 eac3info = avio_rb24(pb);
747 bsmod = (eac3info >> 12) & 0x1f;
748 acmod = (eac3info >> 9) & 0x7;
749 lfeon = (eac3info >> 8) & 0x1;
750 st->codecpar->channel_layout = avpriv_ac3_channel_layout_tab[acmod];
752 st->codecpar->channel_layout |= AV_CH_LOW_FREQUENCY;
753 st->codecpar->channels = av_get_channel_layout_nb_channels(st->codecpar->channel_layout);
755 if (st->codecpar->channels > 1 && bsmod == 0x7)
756 *ast = AV_AUDIO_SERVICE_TYPE_KARAOKE;
758 #if FF_API_LAVF_AVCTX
759 FF_DISABLE_DEPRECATION_WARNINGS
760 st->codec->audio_service_type = *ast;
761 FF_ENABLE_DEPRECATION_WARNINGS
767 static int mov_read_chan(MOVContext *c, AVIOContext *pb, MOVAtom atom)
771 if (c->fc->nb_streams < 1)
773 st = c->fc->streams[c->fc->nb_streams-1];
778 /* skip version and flags */
781 ff_mov_read_chan(c->fc, pb, st, atom.size - 4);
786 static int mov_read_wfex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
790 if (c->fc->nb_streams < 1)
792 st = c->fc->streams[c->fc->nb_streams-1];
794 return ff_get_wav_header(c->fc, pb, st->codecpar, atom.size);
797 static int mov_read_pasp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
799 const int num = avio_rb32(pb);
800 const int den = avio_rb32(pb);
803 if (c->fc->nb_streams < 1)
805 st = c->fc->streams[c->fc->nb_streams-1];
807 if ((st->sample_aspect_ratio.den != 1 || st->sample_aspect_ratio.num) && // default
808 (den != st->sample_aspect_ratio.den || num != st->sample_aspect_ratio.num)) {
809 av_log(c->fc, AV_LOG_WARNING,
810 "sample aspect ratio already set to %d:%d, ignoring 'pasp' atom (%d:%d)\n",
811 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
813 } else if (den != 0) {
814 st->sample_aspect_ratio.num = num;
815 st->sample_aspect_ratio.den = den;
820 /* this atom contains actual media data */
821 static int mov_read_mdat(MOVContext *c, AVIOContext *pb, MOVAtom atom)
823 if (atom.size == 0) /* wrong one (MP4) */
826 return 0; /* now go for moov */
829 /* read major brand, minor version and compatible brands and store them as metadata */
830 static int mov_read_ftyp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
834 char minor_ver_str[11]; /* 32 bit integer -> 10 digits + null */
835 char* comp_brands_str;
836 uint8_t type[5] = {0};
837 int ret = ffio_read_size(pb, type, 4);
841 if (strcmp(type, "qt "))
843 av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
844 av_dict_set(&c->fc->metadata, "major_brand", type, 0);
845 minor_ver = avio_rb32(pb); /* minor version */
846 snprintf(minor_ver_str, sizeof(minor_ver_str), "%"PRIu32"", minor_ver);
847 av_dict_set(&c->fc->metadata, "minor_version", minor_ver_str, 0);
849 comp_brand_size = atom.size - 8;
850 if (comp_brand_size < 0)
851 return AVERROR_INVALIDDATA;
852 comp_brands_str = av_malloc(comp_brand_size + 1); /* Add null terminator */
853 if (!comp_brands_str)
854 return AVERROR(ENOMEM);
856 ret = ffio_read_size(pb, comp_brands_str, comp_brand_size);
858 av_freep(&comp_brands_str);
861 comp_brands_str[comp_brand_size] = 0;
862 av_dict_set(&c->fc->metadata, "compatible_brands", comp_brands_str, 0);
863 av_freep(&comp_brands_str);
868 /* this atom should contain all header atoms */
869 static int mov_read_moov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
873 if ((ret = mov_read_default(c, pb, atom)) < 0)
875 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
876 /* so we don't parse the whole file if over a network */
878 return 0; /* now go for mdat */
881 static int mov_read_moof(MOVContext *c, AVIOContext *pb, MOVAtom atom)
883 c->fragment.moof_offset = c->fragment.implicit_offset = avio_tell(pb) - 8;
884 av_log(c->fc, AV_LOG_TRACE, "moof offset %"PRIx64"\n", c->fragment.moof_offset);
885 return mov_read_default(c, pb, atom);
888 static void mov_metadata_creation_time(AVDictionary **metadata, time_t time)
892 struct tm *ptm, tmbuf;
893 time -= 2082844800; /* seconds between 1904-01-01 and Epoch */
894 ptm = gmtime_r(&time, &tmbuf);
896 if (strftime(buffer, sizeof(buffer), "%Y-%m-%d %H:%M:%S", ptm))
897 av_dict_set(metadata, "creation_time", buffer, 0);
901 static int mov_read_mdhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
904 MOVStreamContext *sc;
906 char language[4] = {0};
908 time_t creation_time;
910 if (c->fc->nb_streams < 1)
912 st = c->fc->streams[c->fc->nb_streams-1];
915 if (sc->time_scale) {
916 av_log(c->fc, AV_LOG_ERROR, "Multiple mdhd?\n");
917 return AVERROR_INVALIDDATA;
920 version = avio_r8(pb);
922 avpriv_request_sample(c->fc, "Version %d", version);
923 return AVERROR_PATCHWELCOME;
925 avio_rb24(pb); /* flags */
927 creation_time = avio_rb64(pb);
930 creation_time = avio_rb32(pb);
931 avio_rb32(pb); /* modification time */
933 mov_metadata_creation_time(&st->metadata, creation_time);
935 sc->time_scale = avio_rb32(pb);
936 st->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
938 lang = avio_rb16(pb); /* language */
939 if (ff_mov_lang_to_iso639(lang, language))
940 av_dict_set(&st->metadata, "language", language, 0);
941 avio_rb16(pb); /* quality */
946 static int mov_read_mvhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
948 time_t creation_time;
949 int version = avio_r8(pb); /* version */
950 avio_rb24(pb); /* flags */
953 creation_time = avio_rb64(pb);
956 creation_time = avio_rb32(pb);
957 avio_rb32(pb); /* modification time */
959 mov_metadata_creation_time(&c->fc->metadata, creation_time);
960 c->time_scale = avio_rb32(pb); /* time scale */
962 av_log(c->fc, AV_LOG_TRACE, "time scale = %i\n", c->time_scale);
964 c->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
965 avio_rb32(pb); /* preferred scale */
967 avio_rb16(pb); /* preferred volume */
969 avio_skip(pb, 10); /* reserved */
971 avio_skip(pb, 36); /* display matrix */
973 avio_rb32(pb); /* preview time */
974 avio_rb32(pb); /* preview duration */
975 avio_rb32(pb); /* poster time */
976 avio_rb32(pb); /* selection time */
977 avio_rb32(pb); /* selection duration */
978 avio_rb32(pb); /* current time */
979 avio_rb32(pb); /* next track ID */
984 static int mov_read_smi(MOVContext *c, AVIOContext *pb, MOVAtom atom)
989 if (c->fc->nb_streams < 1)
991 st = c->fc->streams[c->fc->nb_streams-1];
993 if ((uint64_t)atom.size > (1<<30))
994 return AVERROR_INVALIDDATA;
996 // currently SVQ3 decoder expect full STSD header - so let's fake it
997 // this should be fixed and just SMI header should be passed
998 av_free(st->codecpar->extradata);
999 st->codecpar->extradata = av_mallocz(atom.size + 0x5a + AV_INPUT_BUFFER_PADDING_SIZE);
1000 if (!st->codecpar->extradata)
1001 return AVERROR(ENOMEM);
1002 st->codecpar->extradata_size = 0x5a + atom.size;
1003 memcpy(st->codecpar->extradata, "SVQ3", 4); // fake
1005 ret = ffio_read_size(pb, st->codecpar->extradata + 0x5a, atom.size);
1009 av_log(c->fc, AV_LOG_TRACE, "Reading SMI %"PRId64" %s\n", atom.size, st->codecpar->extradata + 0x5a);
1013 static int mov_read_enda(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1018 if (c->fc->nb_streams < 1)
1020 st = c->fc->streams[c->fc->nb_streams-1];
1022 little_endian = !!avio_rb16(pb);
1023 av_log(c->fc, AV_LOG_TRACE, "enda %d\n", little_endian);
1024 if (little_endian == 1) {
1025 switch (st->codecpar->codec_id) {
1026 case AV_CODEC_ID_PCM_S24BE:
1027 st->codecpar->codec_id = AV_CODEC_ID_PCM_S24LE;
1029 case AV_CODEC_ID_PCM_S32BE:
1030 st->codecpar->codec_id = AV_CODEC_ID_PCM_S32LE;
1032 case AV_CODEC_ID_PCM_F32BE:
1033 st->codecpar->codec_id = AV_CODEC_ID_PCM_F32LE;
1035 case AV_CODEC_ID_PCM_F64BE:
1036 st->codecpar->codec_id = AV_CODEC_ID_PCM_F64LE;
1045 static int mov_read_colr(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1048 char color_parameter_type[5] = { 0 };
1049 uint16_t color_primaries, color_trc, color_matrix;
1052 if (c->fc->nb_streams < 1)
1054 st = c->fc->streams[c->fc->nb_streams - 1];
1056 ret = ffio_read_size(pb, color_parameter_type, 4);
1059 if (strncmp(color_parameter_type, "nclx", 4) &&
1060 strncmp(color_parameter_type, "nclc", 4)) {
1061 av_log(c->fc, AV_LOG_WARNING, "unsupported color_parameter_type %s\n",
1062 color_parameter_type);
1066 color_primaries = avio_rb16(pb);
1067 color_trc = avio_rb16(pb);
1068 color_matrix = avio_rb16(pb);
1070 av_log(c->fc, AV_LOG_TRACE,
1071 "%s: pri %"PRIu16" trc %"PRIu16" matrix %"PRIu16"",
1072 color_parameter_type, color_primaries, color_trc, color_matrix);
1074 if (!strncmp(color_parameter_type, "nclx", 4)) {
1075 uint8_t color_range = avio_r8(pb) >> 7;
1076 av_log(c->fc, AV_LOG_TRACE, " full %"PRIu8"", color_range);
1078 st->codecpar->color_range = AVCOL_RANGE_JPEG;
1080 st->codecpar->color_range = AVCOL_RANGE_MPEG;
1081 /* 14496-12 references JPEG XR specs (rather than the more complete
1082 * 23001-8) so some adjusting is required */
1083 if (color_primaries >= AVCOL_PRI_FILM)
1084 color_primaries = AVCOL_PRI_UNSPECIFIED;
1085 if ((color_trc >= AVCOL_TRC_LINEAR &&
1086 color_trc <= AVCOL_TRC_LOG_SQRT) ||
1087 color_trc >= AVCOL_TRC_BT2020_10)
1088 color_trc = AVCOL_TRC_UNSPECIFIED;
1089 if (color_matrix >= AVCOL_SPC_BT2020_NCL)
1090 color_matrix = AVCOL_SPC_UNSPECIFIED;
1091 st->codecpar->color_primaries = color_primaries;
1092 st->codecpar->color_trc = color_trc;
1093 st->codecpar->color_space = color_matrix;
1094 } else if (!strncmp(color_parameter_type, "nclc", 4)) {
1095 /* color primaries, Table 4-4 */
1096 switch (color_primaries) {
1097 case 1: st->codecpar->color_primaries = AVCOL_PRI_BT709; break;
1098 case 5: st->codecpar->color_primaries = AVCOL_PRI_SMPTE170M; break;
1099 case 6: st->codecpar->color_primaries = AVCOL_PRI_SMPTE240M; break;
1101 /* color transfer, Table 4-5 */
1102 switch (color_trc) {
1103 case 1: st->codecpar->color_trc = AVCOL_TRC_BT709; break;
1104 case 7: st->codecpar->color_trc = AVCOL_TRC_SMPTE240M; break;
1106 /* color matrix, Table 4-6 */
1107 switch (color_matrix) {
1108 case 1: st->codecpar->color_space = AVCOL_SPC_BT709; break;
1109 case 6: st->codecpar->color_space = AVCOL_SPC_BT470BG; break;
1110 case 7: st->codecpar->color_space = AVCOL_SPC_SMPTE240M; break;
1113 av_log(c->fc, AV_LOG_TRACE, "\n");
1118 static int mov_read_fiel(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1121 unsigned mov_field_order;
1122 enum AVFieldOrder decoded_field_order = AV_FIELD_UNKNOWN;
1124 if (c->fc->nb_streams < 1) // will happen with jp2 files
1126 st = c->fc->streams[c->fc->nb_streams-1];
1128 return AVERROR_INVALIDDATA;
1129 mov_field_order = avio_rb16(pb);
1130 if ((mov_field_order & 0xFF00) == 0x0100)
1131 decoded_field_order = AV_FIELD_PROGRESSIVE;
1132 else if ((mov_field_order & 0xFF00) == 0x0200) {
1133 switch (mov_field_order & 0xFF) {
1134 case 0x01: decoded_field_order = AV_FIELD_TT;
1136 case 0x06: decoded_field_order = AV_FIELD_BB;
1138 case 0x09: decoded_field_order = AV_FIELD_TB;
1140 case 0x0E: decoded_field_order = AV_FIELD_BT;
1144 if (decoded_field_order == AV_FIELD_UNKNOWN && mov_field_order) {
1145 av_log(NULL, AV_LOG_ERROR, "Unknown MOV field order 0x%04x\n", mov_field_order);
1147 st->codecpar->field_order = decoded_field_order;
1152 /* FIXME modify QDM2/SVQ3/H.264 decoders to take full atom as extradata */
1153 static int mov_read_extradata(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1160 if (c->fc->nb_streams < 1) // will happen with jp2 files
1162 st= c->fc->streams[c->fc->nb_streams-1];
1163 size= (uint64_t)st->codecpar->extradata_size + atom.size + 8 + AV_INPUT_BUFFER_PADDING_SIZE;
1164 if (size > INT_MAX || (uint64_t)atom.size > INT_MAX)
1165 return AVERROR_INVALIDDATA;
1166 if ((err = av_reallocp(&st->codecpar->extradata, size)) < 0) {
1167 st->codecpar->extradata_size = 0;
1170 buf = st->codecpar->extradata + st->codecpar->extradata_size;
1171 st->codecpar->extradata_size= size - AV_INPUT_BUFFER_PADDING_SIZE;
1172 AV_WB32( buf , atom.size + 8);
1173 AV_WL32( buf + 4, atom.type);
1175 err = ffio_read_size(pb, buf + 8, atom.size);
1182 static int mov_read_wave(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1187 if (c->fc->nb_streams < 1)
1189 st = c->fc->streams[c->fc->nb_streams-1];
1191 if ((uint64_t)atom.size > (1<<30))
1192 return AVERROR_INVALIDDATA;
1194 if (st->codecpar->codec_id == AV_CODEC_ID_QDM2 || st->codecpar->codec_id == AV_CODEC_ID_QDMC) {
1195 // pass all frma atom to codec, needed at least for QDMC and QDM2
1196 av_free(st->codecpar->extradata);
1197 st->codecpar->extradata = av_mallocz(atom.size + AV_INPUT_BUFFER_PADDING_SIZE);
1198 if (!st->codecpar->extradata)
1199 return AVERROR(ENOMEM);
1200 st->codecpar->extradata_size = atom.size;
1202 ret = ffio_read_size(pb, st->codecpar->extradata, atom.size);
1205 } else if (atom.size > 8) { /* to read frma, esds atoms */
1206 if ((ret = mov_read_default(c, pb, atom)) < 0)
1209 avio_skip(pb, atom.size);
1214 * This function reads atom content and puts data in extradata without tag
1215 * nor size unlike mov_read_extradata.
1217 static int mov_read_glbl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1222 if (c->fc->nb_streams < 1)
1224 st = c->fc->streams[c->fc->nb_streams-1];
1226 if ((uint64_t)atom.size > (1<<30))
1227 return AVERROR_INVALIDDATA;
1229 if (atom.size >= 10) {
1230 // Broken files created by legacy versions of libavformat will
1231 // wrap a whole fiel atom inside of a glbl atom.
1232 unsigned size = avio_rb32(pb);
1233 unsigned type = avio_rl32(pb);
1234 avio_seek(pb, -8, SEEK_CUR);
1235 if (type == MKTAG('f','i','e','l') && size == atom.size)
1236 return mov_read_default(c, pb, atom);
1238 av_free(st->codecpar->extradata);
1239 st->codecpar->extradata = av_mallocz(atom.size + AV_INPUT_BUFFER_PADDING_SIZE);
1240 if (!st->codecpar->extradata)
1241 return AVERROR(ENOMEM);
1242 st->codecpar->extradata_size = atom.size;
1244 ret = ffio_read_size(pb, st->codecpar->extradata, atom.size);
1251 static int mov_read_dvc1(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1254 uint8_t profile_level;
1257 if (c->fc->nb_streams < 1)
1259 st = c->fc->streams[c->fc->nb_streams-1];
1261 if (atom.size >= (1<<28) || atom.size < 7)
1262 return AVERROR_INVALIDDATA;
1264 profile_level = avio_r8(pb);
1265 if ((profile_level & 0xf0) != 0xc0)
1268 av_free(st->codecpar->extradata);
1269 st->codecpar->extradata = av_mallocz(atom.size - 7 + AV_INPUT_BUFFER_PADDING_SIZE);
1270 if (!st->codecpar->extradata)
1271 return AVERROR(ENOMEM);
1272 st->codecpar->extradata_size = atom.size - 7;
1273 avio_seek(pb, 6, SEEK_CUR);
1275 ret = ffio_read_size(pb, st->codecpar->extradata, st->codecpar->extradata_size);
1283 * An strf atom is a BITMAPINFOHEADER struct. This struct is 40 bytes itself,
1284 * but can have extradata appended at the end after the 40 bytes belonging
1287 static int mov_read_strf(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1292 if (c->fc->nb_streams < 1)
1294 if (atom.size <= 40)
1296 st = c->fc->streams[c->fc->nb_streams-1];
1298 if ((uint64_t)atom.size > (1<<30))
1299 return AVERROR_INVALIDDATA;
1301 av_free(st->codecpar->extradata);
1302 st->codecpar->extradata = av_mallocz(atom.size - 40 + AV_INPUT_BUFFER_PADDING_SIZE);
1303 if (!st->codecpar->extradata)
1304 return AVERROR(ENOMEM);
1305 st->codecpar->extradata_size = atom.size - 40;
1308 ret = ffio_read_size(pb, st->codecpar->extradata, atom.size - 40);
1315 static int mov_read_stco(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1318 MOVStreamContext *sc;
1319 unsigned int i, entries;
1321 if (c->fc->nb_streams < 1)
1323 st = c->fc->streams[c->fc->nb_streams-1];
1326 avio_r8(pb); /* version */
1327 avio_rb24(pb); /* flags */
1329 entries = avio_rb32(pb);
1333 if (entries >= UINT_MAX/sizeof(int64_t))
1334 return AVERROR_INVALIDDATA;
1336 sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
1337 if (!sc->chunk_offsets)
1338 return AVERROR(ENOMEM);
1339 sc->chunk_count = entries;
1341 if (atom.type == MKTAG('s','t','c','o'))
1342 for (i = 0; i < entries && !pb->eof_reached; i++)
1343 sc->chunk_offsets[i] = avio_rb32(pb);
1344 else if (atom.type == MKTAG('c','o','6','4'))
1345 for (i = 0; i < entries && !pb->eof_reached; i++)
1346 sc->chunk_offsets[i] = avio_rb64(pb);
1348 return AVERROR_INVALIDDATA;
1350 sc->chunk_count = i;
1352 if (pb->eof_reached)
1359 * Compute codec id for 'lpcm' tag.
1360 * See CoreAudioTypes and AudioStreamBasicDescription at Apple.
1362 enum AVCodecID ff_mov_get_lpcm_codec_id(int bps, int flags)
1369 return ff_get_pcm_codec_id(bps, flags & 1, flags & 2, flags & 4 ? -1 : 0);
1372 static int mov_codec_id(AVStream *st, uint32_t format)
1374 int id = ff_codec_get_id(ff_codec_movaudio_tags, format);
1377 ((format & 0xFFFF) == 'm' + ('s' << 8) ||
1378 (format & 0xFFFF) == 'T' + ('S' << 8)))
1379 id = ff_codec_get_id(ff_codec_wav_tags, av_bswap32(format) & 0xFFFF);
1381 if (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO && id > 0) {
1382 st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
1383 } else if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO &&
1384 /* skip old ASF MPEG-4 tag */
1385 format && format != MKTAG('m','p','4','s')) {
1386 id = ff_codec_get_id(ff_codec_movvideo_tags, format);
1388 id = ff_codec_get_id(ff_codec_bmp_tags, format);
1390 st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
1391 else if (st->codecpar->codec_type == AVMEDIA_TYPE_DATA) {
1392 id = ff_codec_get_id(ff_codec_movsubtitle_tags, format);
1394 st->codecpar->codec_type = AVMEDIA_TYPE_SUBTITLE;
1398 st->codecpar->codec_tag = format;
1403 static void mov_parse_stsd_video(MOVContext *c, AVIOContext *pb,
1404 AVStream *st, MOVStreamContext *sc)
1406 uint8_t codec_name[32];
1407 unsigned int color_depth, len, j;
1408 int color_greyscale;
1411 avio_rb16(pb); /* version */
1412 avio_rb16(pb); /* revision level */
1413 avio_rb32(pb); /* vendor */
1414 avio_rb32(pb); /* temporal quality */
1415 avio_rb32(pb); /* spatial quality */
1417 st->codecpar->width = avio_rb16(pb); /* width */
1418 st->codecpar->height = avio_rb16(pb); /* height */
1420 avio_rb32(pb); /* horiz resolution */
1421 avio_rb32(pb); /* vert resolution */
1422 avio_rb32(pb); /* data size, always 0 */
1423 avio_rb16(pb); /* frames per samples */
1425 len = avio_r8(pb); /* codec name, pascal string */
1428 mov_read_mac_string(c, pb, len, codec_name, sizeof(codec_name));
1430 avio_skip(pb, 31 - len);
1433 av_dict_set(&st->metadata, "encoder", codec_name, 0);
1435 /* codec_tag YV12 triggers an UV swap in rawdec.c */
1436 if (!memcmp(codec_name, "Planar Y'CbCr 8-bit 4:2:0", 25))
1437 st->codecpar->codec_tag = MKTAG('I', '4', '2', '0');
1438 /* Flash Media Server uses tag H.263 with Sorenson Spark */
1439 if (st->codecpar->codec_tag == MKTAG('H','2','6','3') &&
1440 !memcmp(codec_name, "Sorenson H263", 13))
1441 st->codecpar->codec_id = AV_CODEC_ID_FLV1;
1443 st->codecpar->bits_per_coded_sample = avio_rb16(pb); /* depth */
1444 color_table_id = avio_rb16(pb); /* colortable id */
1445 av_log(c->fc, AV_LOG_TRACE, "depth %d, ctab id %d\n",
1446 st->codecpar->bits_per_coded_sample, color_table_id);
1447 /* figure out the palette situation */
1448 color_depth = st->codecpar->bits_per_coded_sample & 0x1F;
1449 color_greyscale = st->codecpar->bits_per_coded_sample & 0x20;
1451 /* if the depth is 2, 4, or 8 bpp, file is palettized */
1452 if ((color_depth == 2) || (color_depth == 4) || (color_depth == 8)) {
1453 /* for palette traversal */
1454 unsigned int color_start, color_count, color_end;
1455 unsigned char r, g, b;
1457 if (color_greyscale) {
1458 int color_index, color_dec;
1459 /* compute the greyscale palette */
1460 st->codecpar->bits_per_coded_sample = color_depth;
1461 color_count = 1 << color_depth;
1463 color_dec = 256 / (color_count - 1);
1464 for (j = 0; j < color_count; j++) {
1465 r = g = b = color_index;
1466 sc->palette[j] = (r << 16) | (g << 8) | (b);
1467 color_index -= color_dec;
1468 if (color_index < 0)
1471 } else if (color_table_id) {
1472 const uint8_t *color_table;
1473 /* if flag bit 3 is set, use the default palette */
1474 color_count = 1 << color_depth;
1475 if (color_depth == 2)
1476 color_table = ff_qt_default_palette_4;
1477 else if (color_depth == 4)
1478 color_table = ff_qt_default_palette_16;
1480 color_table = ff_qt_default_palette_256;
1482 for (j = 0; j < color_count; j++) {
1483 r = color_table[j * 3 + 0];
1484 g = color_table[j * 3 + 1];
1485 b = color_table[j * 3 + 2];
1486 sc->palette[j] = (r << 16) | (g << 8) | (b);
1489 /* load the palette from the file */
1490 color_start = avio_rb32(pb);
1491 color_count = avio_rb16(pb);
1492 color_end = avio_rb16(pb);
1493 if ((color_start <= 255) && (color_end <= 255)) {
1494 for (j = color_start; j <= color_end; j++) {
1495 /* each R, G, or B component is 16 bits;
1496 * only use the top 8 bits; skip alpha bytes
1506 sc->palette[j] = (r << 16) | (g << 8) | (b);
1510 sc->has_palette = 1;
1514 static void mov_parse_stsd_audio(MOVContext *c, AVIOContext *pb,
1515 AVStream *st, MOVStreamContext *sc)
1517 int bits_per_sample, flags;
1518 uint16_t version = avio_rb16(pb);
1520 avio_rb16(pb); /* revision level */
1521 avio_rb32(pb); /* vendor */
1523 st->codecpar->channels = avio_rb16(pb); /* channel count */
1524 st->codecpar->bits_per_coded_sample = avio_rb16(pb); /* sample size */
1525 av_log(c->fc, AV_LOG_TRACE, "audio channels %d\n", st->codecpar->channels);
1527 sc->audio_cid = avio_rb16(pb);
1528 avio_rb16(pb); /* packet size = 0 */
1530 st->codecpar->sample_rate = ((avio_rb32(pb) >> 16));
1532 // Read QT version 1 fields. In version 0 these do not exist.
1533 av_log(c->fc, AV_LOG_TRACE, "version =%d, isom =%d\n", version, c->isom);
1536 sc->samples_per_frame = avio_rb32(pb);
1537 avio_rb32(pb); /* bytes per packet */
1538 sc->bytes_per_frame = avio_rb32(pb);
1539 avio_rb32(pb); /* bytes per sample */
1540 } else if (version == 2) {
1541 avio_rb32(pb); /* sizeof struct only */
1542 st->codecpar->sample_rate = av_int2double(avio_rb64(pb));
1543 st->codecpar->channels = avio_rb32(pb);
1544 avio_rb32(pb); /* always 0x7F000000 */
1545 st->codecpar->bits_per_coded_sample = avio_rb32(pb);
1547 flags = avio_rb32(pb); /* lpcm format specific flag */
1548 sc->bytes_per_frame = avio_rb32(pb);
1549 sc->samples_per_frame = avio_rb32(pb);
1550 if (st->codecpar->codec_tag == MKTAG('l','p','c','m'))
1551 st->codecpar->codec_id =
1552 ff_mov_get_lpcm_codec_id(st->codecpar->bits_per_coded_sample,
1555 if (version == 0 || (version == 1 && sc->audio_cid != -2)) {
1556 /* can't correctly handle variable sized packet as audio unit */
1557 switch (st->codecpar->codec_id) {
1558 case AV_CODEC_ID_MP2:
1559 case AV_CODEC_ID_MP3:
1560 st->need_parsing = AVSTREAM_PARSE_FULL;
1566 switch (st->codecpar->codec_id) {
1567 case AV_CODEC_ID_PCM_S8:
1568 case AV_CODEC_ID_PCM_U8:
1569 if (st->codecpar->bits_per_coded_sample == 16)
1570 st->codecpar->codec_id = AV_CODEC_ID_PCM_S16BE;
1572 case AV_CODEC_ID_PCM_S16LE:
1573 case AV_CODEC_ID_PCM_S16BE:
1574 if (st->codecpar->bits_per_coded_sample == 8)
1575 st->codecpar->codec_id = AV_CODEC_ID_PCM_S8;
1576 else if (st->codecpar->bits_per_coded_sample == 24)
1577 st->codecpar->codec_id =
1578 st->codecpar->codec_id == AV_CODEC_ID_PCM_S16BE ?
1579 AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE;
1581 /* set values for old format before stsd version 1 appeared */
1582 case AV_CODEC_ID_MACE3:
1583 sc->samples_per_frame = 6;
1584 sc->bytes_per_frame = 2 * st->codecpar->channels;
1586 case AV_CODEC_ID_MACE6:
1587 sc->samples_per_frame = 6;
1588 sc->bytes_per_frame = 1 * st->codecpar->channels;
1590 case AV_CODEC_ID_ADPCM_IMA_QT:
1591 sc->samples_per_frame = 64;
1592 sc->bytes_per_frame = 34 * st->codecpar->channels;
1594 case AV_CODEC_ID_GSM:
1595 sc->samples_per_frame = 160;
1596 sc->bytes_per_frame = 33;
1602 bits_per_sample = av_get_bits_per_sample(st->codecpar->codec_id);
1603 if (bits_per_sample) {
1604 st->codecpar->bits_per_coded_sample = bits_per_sample;
1605 sc->sample_size = (bits_per_sample >> 3) * st->codecpar->channels;
1609 static void mov_parse_stsd_subtitle(MOVContext *c, AVIOContext *pb,
1610 AVStream *st, MOVStreamContext *sc,
1613 // ttxt stsd contains display flags, justification, background
1614 // color, fonts, and default styles, so fake an atom to read it
1615 MOVAtom fake_atom = { .size = size };
1616 // mp4s contains a regular esds atom
1617 if (st->codecpar->codec_tag != AV_RL32("mp4s"))
1618 mov_read_glbl(c, pb, fake_atom);
1619 st->codecpar->width = sc->width;
1620 st->codecpar->height = sc->height;
1623 static uint32_t yuv_to_rgba(uint32_t ycbcr)
1628 y = (ycbcr >> 16) & 0xFF;
1629 cr = (ycbcr >> 8) & 0xFF;
1632 b = av_clip_uint8(1.164 * (y - 16) + 2.018 * (cb - 128));
1633 g = av_clip_uint8(1.164 * (y - 16) - 0.813 * (cr - 128) - 0.391 * (cb - 128));
1634 r = av_clip_uint8(1.164 * (y - 16) + 1.596 * (cr - 128));
1636 return (r << 16) | (g << 8) | b;
1639 static int mov_rewrite_dvd_sub_extradata(AVStream *st)
1641 char buf[256] = {0};
1642 uint8_t *src = st->codecpar->extradata;
1645 if (st->codecpar->extradata_size != 64)
1648 if (st->codecpar->width > 0 && st->codecpar->height > 0)
1649 snprintf(buf, sizeof(buf), "size: %dx%d\n",
1650 st->codecpar->width, st->codecpar->height);
1651 av_strlcat(buf, "palette: ", sizeof(buf));
1653 for (i = 0; i < 16; i++) {
1654 uint32_t yuv = AV_RB32(src + i * 4);
1655 uint32_t rgba = yuv_to_rgba(yuv);
1657 av_strlcatf(buf, sizeof(buf), "%06"PRIx32"%s", rgba, i != 15 ? ", " : "");
1660 if (av_strlcat(buf, "\n", sizeof(buf)) >= sizeof(buf))
1663 av_freep(&st->codecpar->extradata);
1664 st->codecpar->extradata_size = 0;
1665 st->codecpar->extradata = av_mallocz(strlen(buf) + AV_INPUT_BUFFER_PADDING_SIZE);
1666 if (!st->codecpar->extradata)
1667 return AVERROR(ENOMEM);
1668 st->codecpar->extradata_size = strlen(buf);
1669 memcpy(st->codecpar->extradata, buf, st->codecpar->extradata_size);
1674 static int mov_parse_stsd_data(MOVContext *c, AVIOContext *pb,
1675 AVStream *st, MOVStreamContext *sc,
1680 if (st->codecpar->codec_tag == MKTAG('t','m','c','d')) {
1681 st->codecpar->extradata_size = size;
1682 st->codecpar->extradata = av_malloc(size + AV_INPUT_BUFFER_PADDING_SIZE);
1683 if (!st->codecpar->extradata)
1684 return AVERROR(ENOMEM);
1685 ret = ffio_read_size(pb, st->codecpar->extradata, size);
1689 /* other codec type, just skip (rtp, mp4s ...) */
1690 avio_skip(pb, size);
1695 static int mov_finalize_stsd_codec(MOVContext *c, AVIOContext *pb,
1696 AVStream *st, MOVStreamContext *sc)
1698 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
1699 !st->codecpar->sample_rate && sc->time_scale > 1)
1700 st->codecpar->sample_rate = sc->time_scale;
1702 /* special codec parameters handling */
1703 switch (st->codecpar->codec_id) {
1704 #if CONFIG_DV_DEMUXER
1705 case AV_CODEC_ID_DVAUDIO:
1706 c->dv_fctx = avformat_alloc_context();
1708 av_log(c->fc, AV_LOG_ERROR, "dv demux context alloc error\n");
1709 return AVERROR(ENOMEM);
1711 c->dv_demux = avpriv_dv_init_demux(c->dv_fctx);
1713 av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
1714 return AVERROR(ENOMEM);
1716 sc->dv_audio_container = 1;
1717 st->codecpar->codec_id = AV_CODEC_ID_PCM_S16LE;
1720 /* no ifdef since parameters are always those */
1721 case AV_CODEC_ID_QCELP:
1722 st->codecpar->channels = 1;
1723 // force sample rate for qcelp when not stored in mov
1724 if (st->codecpar->codec_tag != MKTAG('Q','c','l','p'))
1725 st->codecpar->sample_rate = 8000;
1727 case AV_CODEC_ID_AMR_NB:
1728 st->codecpar->channels = 1;
1729 /* force sample rate for amr, stsd in 3gp does not store sample rate */
1730 st->codecpar->sample_rate = 8000;
1732 case AV_CODEC_ID_AMR_WB:
1733 st->codecpar->channels = 1;
1734 st->codecpar->sample_rate = 16000;
1736 case AV_CODEC_ID_MP2:
1737 case AV_CODEC_ID_MP3:
1738 /* force type after stsd for m1a hdlr */
1739 st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
1741 case AV_CODEC_ID_GSM:
1742 case AV_CODEC_ID_ADPCM_MS:
1743 case AV_CODEC_ID_ADPCM_IMA_WAV:
1744 case AV_CODEC_ID_ILBC:
1745 st->codecpar->block_align = sc->bytes_per_frame;
1747 case AV_CODEC_ID_ALAC:
1748 if (st->codecpar->extradata_size == 36) {
1749 st->codecpar->channels = AV_RB8 (st->codecpar->extradata + 21);
1750 st->codecpar->sample_rate = AV_RB32(st->codecpar->extradata + 32);
1753 case AV_CODEC_ID_VC1:
1754 st->need_parsing = AVSTREAM_PARSE_FULL;
1762 static int mov_skip_multiple_stsd(MOVContext *c, AVIOContext *pb,
1763 int codec_tag, int format,
1766 int video_codec_id = ff_codec_get_id(ff_codec_movvideo_tags, format);
1769 (codec_tag == AV_RL32("avc1") ||
1770 codec_tag == AV_RL32("hvc1") ||
1771 codec_tag == AV_RL32("hev1") ||
1772 (codec_tag != format &&
1773 (c->fc->video_codec_id ? video_codec_id != c->fc->video_codec_id
1774 : codec_tag != MKTAG('j','p','e','g'))))) {
1775 /* Multiple fourcc, we skip JPEG. This is not correct, we should
1776 * export it as a separate AVStream but this needs a few changes
1777 * in the MOV demuxer, patch welcome. */
1779 av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n");
1780 avio_skip(pb, size);
1787 int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries)
1790 MOVStreamContext *sc;
1791 int pseudo_stream_id;
1793 if (c->fc->nb_streams < 1)
1795 st = c->fc->streams[c->fc->nb_streams-1];
1798 for (pseudo_stream_id = 0;
1799 pseudo_stream_id < entries && !pb->eof_reached;
1800 pseudo_stream_id++) {
1801 //Parsing Sample description table
1803 int ret, dref_id = 1;
1804 MOVAtom a = { AV_RL32("stsd") };
1805 int64_t start_pos = avio_tell(pb);
1806 int64_t size = avio_rb32(pb); /* size */
1807 uint32_t format = avio_rl32(pb); /* data format */
1810 avio_rb32(pb); /* reserved */
1811 avio_rb16(pb); /* reserved */
1812 dref_id = avio_rb16(pb);
1814 av_log(c->fc, AV_LOG_ERROR,
1815 "invalid size %"PRId64" in stsd\n", size);
1816 return AVERROR_INVALIDDATA;
1819 if (mov_skip_multiple_stsd(c, pb, st->codecpar->codec_tag, format,
1820 size - (avio_tell(pb) - start_pos)))
1823 sc->pseudo_stream_id = st->codecpar->codec_tag ? -1 : pseudo_stream_id;
1824 sc->dref_id= dref_id;
1826 id = mov_codec_id(st, format);
1828 av_log(c->fc, AV_LOG_TRACE,
1829 "size=%"PRId64" format=0x%08x codec_type=%d\n",
1830 size, format, st->codecpar->codec_type);
1832 if (st->codecpar->codec_type==AVMEDIA_TYPE_VIDEO) {
1833 st->codecpar->codec_id = id;
1834 mov_parse_stsd_video(c, pb, st, sc);
1835 } else if (st->codecpar->codec_type==AVMEDIA_TYPE_AUDIO) {
1836 st->codecpar->codec_id = id;
1837 mov_parse_stsd_audio(c, pb, st, sc);
1838 } else if (st->codecpar->codec_type==AVMEDIA_TYPE_SUBTITLE){
1839 st->codecpar->codec_id = id;
1840 mov_parse_stsd_subtitle(c, pb, st, sc,
1841 size - (avio_tell(pb) - start_pos));
1843 ret = mov_parse_stsd_data(c, pb, st, sc,
1844 size - (avio_tell(pb) - start_pos));
1848 /* this will read extra atoms at the end (wave, alac, damr, avcC, hvcC, SMI ...) */
1849 a.size = size - (avio_tell(pb) - start_pos);
1851 if ((ret = mov_read_default(c, pb, a)) < 0)
1853 } else if (a.size > 0)
1854 avio_skip(pb, a.size);
1857 if (pb->eof_reached)
1860 return mov_finalize_stsd_codec(c, pb, st, sc);
1863 static int mov_read_stsd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1867 avio_r8(pb); /* version */
1868 avio_rb24(pb); /* flags */
1869 entries = avio_rb32(pb);
1871 return ff_mov_read_stsd_entries(c, pb, entries);
1874 static int mov_read_stsc(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1877 MOVStreamContext *sc;
1878 unsigned int i, entries;
1880 if (c->fc->nb_streams < 1)
1882 st = c->fc->streams[c->fc->nb_streams-1];
1885 avio_r8(pb); /* version */
1886 avio_rb24(pb); /* flags */
1888 entries = avio_rb32(pb);
1890 av_log(c->fc, AV_LOG_TRACE, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
1894 if (entries >= UINT_MAX / sizeof(*sc->stsc_data))
1895 return AVERROR_INVALIDDATA;
1896 sc->stsc_data = av_malloc(entries * sizeof(*sc->stsc_data));
1898 return AVERROR(ENOMEM);
1900 for (i = 0; i < entries && !pb->eof_reached; i++) {
1901 sc->stsc_data[i].first = avio_rb32(pb);
1902 sc->stsc_data[i].count = avio_rb32(pb);
1903 sc->stsc_data[i].id = avio_rb32(pb);
1908 if (pb->eof_reached)
1914 static int mov_read_stps(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1917 MOVStreamContext *sc;
1918 unsigned i, entries;
1920 if (c->fc->nb_streams < 1)
1922 st = c->fc->streams[c->fc->nb_streams-1];
1925 avio_rb32(pb); // version + flags
1927 entries = avio_rb32(pb);
1928 if (entries >= UINT_MAX / sizeof(*sc->stps_data))
1929 return AVERROR_INVALIDDATA;
1930 sc->stps_data = av_malloc(entries * sizeof(*sc->stps_data));
1932 return AVERROR(ENOMEM);
1934 for (i = 0; i < entries && !pb->eof_reached; i++) {
1935 sc->stps_data[i] = avio_rb32(pb);
1936 //av_log(c->fc, AV_LOG_TRACE, "stps %d\n", sc->stps_data[i]);
1941 if (pb->eof_reached)
1947 static int mov_read_stss(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1950 MOVStreamContext *sc;
1951 unsigned int i, entries;
1953 if (c->fc->nb_streams < 1)
1955 st = c->fc->streams[c->fc->nb_streams-1];
1958 avio_r8(pb); /* version */
1959 avio_rb24(pb); /* flags */
1961 entries = avio_rb32(pb);
1963 av_log(c->fc, AV_LOG_TRACE, "keyframe_count = %d\n", entries);
1967 sc->keyframe_absent = 1;
1970 if (entries >= UINT_MAX / sizeof(int))
1971 return AVERROR_INVALIDDATA;
1972 av_freep(&sc->keyframes);
1973 sc->keyframes = av_malloc(entries * sizeof(int));
1975 return AVERROR(ENOMEM);
1977 for (i = 0; i < entries && !pb->eof_reached; i++) {
1978 sc->keyframes[i] = avio_rb32(pb);
1979 //av_log(c->fc, AV_LOG_TRACE, "keyframes[]=%d\n", sc->keyframes[i]);
1982 sc->keyframe_count = i;
1984 if (pb->eof_reached)
1990 static int mov_read_stsz(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1993 MOVStreamContext *sc;
1994 unsigned int i, entries, sample_size, field_size, num_bytes;
1999 if (c->fc->nb_streams < 1)
2001 st = c->fc->streams[c->fc->nb_streams-1];
2004 avio_r8(pb); /* version */
2005 avio_rb24(pb); /* flags */
2007 if (atom.type == MKTAG('s','t','s','z')) {
2008 sample_size = avio_rb32(pb);
2009 if (!sc->sample_size) /* do not overwrite value computed in stsd */
2010 sc->sample_size = sample_size;
2014 avio_rb24(pb); /* reserved */
2015 field_size = avio_r8(pb);
2017 entries = avio_rb32(pb);
2019 av_log(c->fc, AV_LOG_TRACE, "sample_size = %d sample_count = %d\n", sc->sample_size, entries);
2021 sc->sample_count = entries;
2025 if (field_size != 4 && field_size != 8 && field_size != 16 && field_size != 32) {
2026 av_log(c->fc, AV_LOG_ERROR, "Invalid sample field size %d\n", field_size);
2027 return AVERROR_INVALIDDATA;
2032 if (entries >= UINT_MAX / sizeof(int) || entries >= (UINT_MAX - 4) / field_size)
2033 return AVERROR_INVALIDDATA;
2034 sc->sample_sizes = av_malloc(entries * sizeof(int));
2035 if (!sc->sample_sizes)
2036 return AVERROR(ENOMEM);
2038 num_bytes = (entries*field_size+4)>>3;
2040 buf = av_malloc(num_bytes+AV_INPUT_BUFFER_PADDING_SIZE);
2042 av_freep(&sc->sample_sizes);
2043 return AVERROR(ENOMEM);
2046 ret = ffio_read_size(pb, buf, num_bytes);
2048 av_freep(&sc->sample_sizes);
2053 init_get_bits(&gb, buf, 8*num_bytes);
2055 for (i = 0; i < entries && !pb->eof_reached; i++) {
2056 sc->sample_sizes[i] = get_bits_long(&gb, field_size);
2057 sc->data_size += sc->sample_sizes[i];
2060 sc->sample_count = i;
2064 if (pb->eof_reached)
2070 static int mov_read_stts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2073 MOVStreamContext *sc;
2074 unsigned int i, entries;
2076 int64_t total_sample_count=0;
2078 if (c->fc->nb_streams < 1)
2080 st = c->fc->streams[c->fc->nb_streams-1];
2083 avio_r8(pb); /* version */
2084 avio_rb24(pb); /* flags */
2085 entries = avio_rb32(pb);
2087 av_log(c->fc, AV_LOG_TRACE, "track[%i].stts.entries = %i\n",
2088 c->fc->nb_streams-1, entries);
2092 if (entries >= UINT_MAX / sizeof(*sc->stts_data))
2093 return AVERROR(EINVAL);
2095 av_free(sc->stts_data);
2096 sc->stts_data = av_malloc(entries * sizeof(*sc->stts_data));
2098 return AVERROR(ENOMEM);
2100 for (i = 0; i < entries && !pb->eof_reached; i++) {
2101 int sample_duration;
2104 sample_count=avio_rb32(pb);
2105 sample_duration = avio_rb32(pb);
2106 if (sample_count < 0) {
2107 av_log(c->fc, AV_LOG_ERROR, "Invalid sample_count=%d\n", sample_count);
2108 return AVERROR_INVALIDDATA;
2110 sc->stts_data[i].count= sample_count;
2111 sc->stts_data[i].duration= sample_duration;
2113 av_log(c->fc, AV_LOG_TRACE, "sample_count=%d, sample_duration=%d\n",
2114 sample_count, sample_duration);
2116 duration+=(int64_t)sample_duration*sample_count;
2117 total_sample_count+=sample_count;
2122 if (pb->eof_reached)
2125 st->nb_frames= total_sample_count;
2127 st->duration= duration;
2128 sc->track_end = duration;
2132 static int mov_read_ctts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2135 MOVStreamContext *sc;
2136 unsigned int i, entries;
2138 if (c->fc->nb_streams < 1)
2140 st = c->fc->streams[c->fc->nb_streams-1];
2143 avio_r8(pb); /* version */
2144 avio_rb24(pb); /* flags */
2145 entries = avio_rb32(pb);
2147 av_log(c->fc, AV_LOG_TRACE, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
2149 av_freep(&sc->ctts_data);
2153 if (entries >= UINT_MAX / sizeof(*sc->ctts_data))
2154 return AVERROR_INVALIDDATA;
2155 sc->ctts_data = av_realloc(NULL, entries * sizeof(*sc->ctts_data));
2157 return AVERROR(ENOMEM);
2159 for (i = 0; i < entries && !pb->eof_reached; i++) {
2160 int count =avio_rb32(pb);
2161 int duration =avio_rb32(pb);
2163 sc->ctts_data[i].count = count;
2164 sc->ctts_data[i].duration= duration;
2166 sc->dts_shift = FFMAX(sc->dts_shift, -duration);
2171 if (pb->eof_reached)
2174 av_log(c->fc, AV_LOG_TRACE, "dts shift %d\n", sc->dts_shift);
2179 static int mov_read_sbgp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2182 MOVStreamContext *sc;
2183 unsigned int i, entries;
2185 uint32_t grouping_type;
2187 if (c->fc->nb_streams < 1)
2189 st = c->fc->streams[c->fc->nb_streams-1];
2192 version = avio_r8(pb); /* version */
2193 avio_rb24(pb); /* flags */
2194 grouping_type = avio_rl32(pb);
2195 if (grouping_type != MKTAG( 'r','a','p',' '))
2196 return 0; /* only support 'rap ' grouping */
2198 avio_rb32(pb); /* grouping_type_parameter */
2200 entries = avio_rb32(pb);
2203 if (entries >= UINT_MAX / sizeof(*sc->rap_group))
2204 return AVERROR_INVALIDDATA;
2205 sc->rap_group = av_malloc(entries * sizeof(*sc->rap_group));
2207 return AVERROR(ENOMEM);
2209 for (i = 0; i < entries && !pb->eof_reached; i++) {
2210 sc->rap_group[i].count = avio_rb32(pb); /* sample_count */
2211 sc->rap_group[i].index = avio_rb32(pb); /* group_description_index */
2214 sc->rap_group_count = i;
2216 return pb->eof_reached ? AVERROR_EOF : 0;
2219 static void mov_build_index(MOVContext *mov, AVStream *st)
2221 MOVStreamContext *sc = st->priv_data;
2222 int64_t current_offset;
2223 int64_t current_dts = 0;
2224 unsigned int stts_index = 0;
2225 unsigned int stsc_index = 0;
2226 unsigned int stss_index = 0;
2227 unsigned int stps_index = 0;
2229 uint64_t stream_size = 0;
2231 /* adjust first dts according to edit list */
2232 if (sc->time_offset && mov->time_scale > 0) {
2233 if (sc->time_offset < 0)
2234 sc->time_offset = av_rescale(sc->time_offset, sc->time_scale, mov->time_scale);
2235 current_dts = -sc->time_offset;
2236 if (sc->ctts_data && sc->stts_data && sc->stts_data[0].duration &&
2237 sc->ctts_data[0].duration / sc->stts_data[0].duration > 16) {
2238 /* more than 16 frames delay, dts are likely wrong
2239 this happens with files created by iMovie */
2241 st->internal->avctx->has_b_frames = 1;
2245 /* only use old uncompressed audio chunk demuxing when stts specifies it */
2246 if (!(st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
2247 sc->stts_count == 1 && sc->stts_data[0].duration == 1)) {
2248 unsigned int current_sample = 0;
2249 unsigned int stts_sample = 0;
2250 unsigned int sample_size;
2251 unsigned int distance = 0;
2252 unsigned int rap_group_index = 0;
2253 unsigned int rap_group_sample = 0;
2254 int rap_group_present = sc->rap_group_count && sc->rap_group;
2255 int key_off = (sc->keyframes && sc->keyframes[0] > 0) || (sc->stps_data && sc->stps_data[0] > 0);
2257 current_dts -= sc->dts_shift;
2259 if (!sc->sample_count)
2261 if (sc->sample_count >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries)
2263 if (av_reallocp_array(&st->index_entries,
2264 st->nb_index_entries + sc->sample_count,
2265 sizeof(*st->index_entries)) < 0) {
2266 st->nb_index_entries = 0;
2269 st->index_entries_allocated_size = (st->nb_index_entries + sc->sample_count) * sizeof(*st->index_entries);
2271 for (i = 0; i < sc->chunk_count; i++) {
2272 current_offset = sc->chunk_offsets[i];
2273 while (stsc_index + 1 < sc->stsc_count &&
2274 i + 1 == sc->stsc_data[stsc_index + 1].first)
2276 for (j = 0; j < sc->stsc_data[stsc_index].count; j++) {
2278 if (current_sample >= sc->sample_count) {
2279 av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
2283 if (!sc->keyframe_absent && (!sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index])) {
2285 if (stss_index + 1 < sc->keyframe_count)
2287 } else if (sc->stps_count && current_sample+key_off == sc->stps_data[stps_index]) {
2289 if (stps_index + 1 < sc->stps_count)
2292 if (rap_group_present && rap_group_index < sc->rap_group_count) {
2293 if (sc->rap_group[rap_group_index].index > 0)
2295 if (++rap_group_sample == sc->rap_group[rap_group_index].count) {
2296 rap_group_sample = 0;
2302 sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
2303 if (sc->pseudo_stream_id == -1 ||
2304 sc->stsc_data[stsc_index].id - 1 == sc->pseudo_stream_id) {
2305 AVIndexEntry *e = &st->index_entries[st->nb_index_entries++];
2306 e->pos = current_offset;
2307 e->timestamp = current_dts;
2308 e->size = sample_size;
2309 e->min_distance = distance;
2310 e->flags = keyframe ? AVINDEX_KEYFRAME : 0;
2311 av_log(mov->fc, AV_LOG_TRACE, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
2312 "size %d, distance %d, keyframe %d\n", st->index, current_sample,
2313 current_offset, current_dts, sample_size, distance, keyframe);
2316 current_offset += sample_size;
2317 stream_size += sample_size;
2318 current_dts += sc->stts_data[stts_index].duration;
2322 if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
2328 if (st->duration > 0)
2329 st->codecpar->bit_rate = stream_size*8*sc->time_scale/st->duration;
2331 unsigned chunk_samples, total = 0;
2333 // compute total chunk count
2334 for (i = 0; i < sc->stsc_count; i++) {
2335 unsigned count, chunk_count;
2337 chunk_samples = sc->stsc_data[i].count;
2338 if (i != sc->stsc_count - 1 &&
2339 sc->samples_per_frame && chunk_samples % sc->samples_per_frame) {
2340 av_log(mov->fc, AV_LOG_ERROR, "error unaligned chunk\n");
2344 if (sc->samples_per_frame >= 160) { // gsm
2345 count = chunk_samples / sc->samples_per_frame;
2346 } else if (sc->samples_per_frame > 1) {
2347 unsigned samples = (1024/sc->samples_per_frame)*sc->samples_per_frame;
2348 count = (chunk_samples+samples-1) / samples;
2350 count = (chunk_samples+1023) / 1024;
2353 if (i < sc->stsc_count - 1)
2354 chunk_count = sc->stsc_data[i+1].first - sc->stsc_data[i].first;
2356 chunk_count = sc->chunk_count - (sc->stsc_data[i].first - 1);
2357 total += chunk_count * count;
2360 av_log(mov->fc, AV_LOG_TRACE, "chunk count %d\n", total);
2361 if (total >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries)
2363 if (av_reallocp_array(&st->index_entries,
2364 st->nb_index_entries + total,
2365 sizeof(*st->index_entries)) < 0) {
2366 st->nb_index_entries = 0;
2369 st->index_entries_allocated_size = (st->nb_index_entries + total) * sizeof(*st->index_entries);
2372 for (i = 0; i < sc->chunk_count; i++) {
2373 current_offset = sc->chunk_offsets[i];
2374 if (stsc_index + 1 < sc->stsc_count &&
2375 i + 1 == sc->stsc_data[stsc_index + 1].first)
2377 chunk_samples = sc->stsc_data[stsc_index].count;
2379 while (chunk_samples > 0) {
2381 unsigned size, samples;
2383 if (sc->samples_per_frame > 1 && !sc->bytes_per_frame) {
2384 avpriv_request_sample(mov->fc,
2385 "Zero bytes per frame, but %d samples per frame",
2386 sc->samples_per_frame);
2390 if (sc->samples_per_frame >= 160) { // gsm
2391 samples = sc->samples_per_frame;
2392 size = sc->bytes_per_frame;
2394 if (sc->samples_per_frame > 1) {
2395 samples = FFMIN((1024 / sc->samples_per_frame)*
2396 sc->samples_per_frame, chunk_samples);
2397 size = (samples / sc->samples_per_frame) * sc->bytes_per_frame;
2399 samples = FFMIN(1024, chunk_samples);
2400 size = samples * sc->sample_size;
2404 if (st->nb_index_entries >= total) {
2405 av_log(mov->fc, AV_LOG_ERROR, "wrong chunk count %d\n", total);
2408 e = &st->index_entries[st->nb_index_entries++];
2409 e->pos = current_offset;
2410 e->timestamp = current_dts;
2412 e->min_distance = 0;
2413 e->flags = AVINDEX_KEYFRAME;
2414 av_log(mov->fc, AV_LOG_TRACE, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", "
2415 "size %d, duration %d\n", st->index, i, current_offset, current_dts,
2418 current_offset += size;
2419 current_dts += samples;
2420 chunk_samples -= samples;
2426 static int mov_open_dref(AVFormatContext *s, AVIOContext **pb, char *src,
2429 /* try relative path, we do not try the absolute because it can leak information about our
2430 system to an attacker */
2431 if (ref->nlvl_to > 0 && ref->nlvl_from > 0) {
2432 char filename[1024];
2436 /* find a source dir */
2437 src_path = strrchr(src, '/');
2443 /* find a next level down to target */
2444 for (i = 0, l = strlen(ref->path) - 1; l >= 0; l--)
2445 if (ref->path[l] == '/') {
2446 if (i == ref->nlvl_to - 1)
2452 /* compose filename if next level down to target was found */
2453 if (i == ref->nlvl_to - 1 && src_path - src < sizeof(filename)) {
2454 memcpy(filename, src, src_path - src);
2455 filename[src_path - src] = 0;
2457 for (i = 1; i < ref->nlvl_from; i++)
2458 av_strlcat(filename, "../", 1024);
2460 av_strlcat(filename, ref->path + l + 1, 1024);
2462 if (!s->io_open(s, pb, filename, AVIO_FLAG_READ, NULL))
2467 return AVERROR(ENOENT);
2470 static int mov_read_trak(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2473 MOVStreamContext *sc;
2476 st = avformat_new_stream(c->fc, NULL);
2477 if (!st) return AVERROR(ENOMEM);
2478 st->id = c->fc->nb_streams;
2479 sc = av_mallocz(sizeof(MOVStreamContext));
2480 if (!sc) return AVERROR(ENOMEM);
2483 st->codecpar->codec_type = AVMEDIA_TYPE_DATA;
2484 sc->ffindex = st->index;
2486 if ((ret = mov_read_default(c, pb, atom)) < 0)
2490 if (sc->chunk_count && (!sc->stts_count || !sc->stsc_count ||
2491 (!sc->sample_size && !sc->sample_count))) {
2492 av_log(c->fc, AV_LOG_ERROR, "stream %d, missing mandatory atoms, broken header\n",
2497 if (sc->time_scale <= 0) {
2498 av_log(c->fc, AV_LOG_WARNING, "stream %d, timescale not set\n", st->index);
2499 sc->time_scale = c->time_scale;
2500 if (sc->time_scale <= 0)
2504 avpriv_set_pts_info(st, 64, 1, sc->time_scale);
2506 mov_build_index(c, st);
2508 if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) {
2509 MOVDref *dref = &sc->drefs[sc->dref_id - 1];
2510 if (c->enable_drefs) {
2511 if (mov_open_dref(c->fc, &sc->pb, c->fc->filename, dref) < 0)
2512 av_log(c->fc, AV_LOG_ERROR,
2513 "stream %d, error opening alias: path='%s', dir='%s', "
2514 "filename='%s', volume='%s', nlvl_from=%d, nlvl_to=%d\n",
2515 st->index, dref->path, dref->dir, dref->filename,
2516 dref->volume, dref->nlvl_from, dref->nlvl_to);
2518 av_log(c->fc, AV_LOG_WARNING,
2519 "Skipped opening external track: "
2520 "stream %d, alias: path='%s', dir='%s', "
2521 "filename='%s', volume='%s', nlvl_from=%d, nlvl_to=%d."
2522 "Set enable_drefs to allow this.\n",
2523 st->index, dref->path, dref->dir, dref->filename,
2524 dref->volume, dref->nlvl_from, dref->nlvl_to);
2529 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
2530 if (!st->sample_aspect_ratio.num &&
2531 (st->codecpar->width != sc->width || st->codecpar->height != sc->height)) {
2532 st->sample_aspect_ratio = av_d2q(((double)st->codecpar->height * sc->width) /
2533 ((double)st->codecpar->width * sc->height), INT_MAX);
2537 // done for ai5q, ai52, ai55, ai1q, ai12 and ai15.
2538 if (!st->codecpar->extradata_size && st->codecpar->codec_id == AV_CODEC_ID_H264 &&
2539 TAG_IS_AVCI(st->codecpar->codec_tag)) {
2540 ret = ff_generate_avci_extradata(st);
2545 switch (st->codecpar->codec_id) {
2546 #if CONFIG_H261_DECODER
2547 case AV_CODEC_ID_H261:
2549 #if CONFIG_H263_DECODER
2550 case AV_CODEC_ID_H263:
2552 #if CONFIG_MPEG4_DECODER
2553 case AV_CODEC_ID_MPEG4:
2555 st->codecpar->width = 0; /* let decoder init width/height */
2556 st->codecpar->height= 0;
2558 case AV_CODEC_ID_MP3:
2559 st->need_parsing = AVSTREAM_PARSE_FULL;
2563 /* Do not need those anymore. */
2564 av_freep(&sc->chunk_offsets);
2565 av_freep(&sc->stsc_data);
2566 av_freep(&sc->sample_sizes);
2567 av_freep(&sc->keyframes);
2568 av_freep(&sc->stts_data);
2569 av_freep(&sc->stps_data);
2570 av_freep(&sc->rap_group);
2575 static int mov_read_ilst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2578 c->itunes_metadata = 1;
2579 ret = mov_read_default(c, pb, atom);
2580 c->itunes_metadata = 0;
2584 static int mov_read_replaygain(MOVContext *c, AVIOContext *pb, int64_t size)
2586 int64_t end = avio_tell(pb) + size;
2587 uint8_t *key = NULL, *val = NULL;
2590 for (i = 0; i < 2; i++) {
2595 if (end - avio_tell(pb) <= 12)
2598 len = avio_rb32(pb);
2599 tag = avio_rl32(pb);
2600 avio_skip(pb, 4); // flags
2602 if (len < 12 || len - 12 > end - avio_tell(pb))
2606 if (tag == MKTAG('n', 'a', 'm', 'e'))
2608 else if (tag == MKTAG('d', 'a', 't', 'a') && len > 4) {
2615 *p = av_malloc(len + 1);
2618 ret = ffio_read_size(pb, *p, len);
2627 av_dict_set(&c->fc->metadata, key, val,
2628 AV_DICT_DONT_STRDUP_KEY | AV_DICT_DONT_STRDUP_VAL);
2632 avio_seek(pb, end, SEEK_SET);
2638 static int mov_read_custom(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2640 int64_t end = avio_tell(pb) + atom.size;
2646 len = avio_rb32(pb);
2647 tag = avio_rl32(pb);
2649 if (len > atom.size)
2652 if (tag == MKTAG('m', 'e', 'a', 'n') && len > 12) {
2653 uint8_t domain[128];
2656 avio_skip(pb, 4); // flags
2659 domain_len = avio_get_str(pb, len, domain, sizeof(domain));
2660 avio_skip(pb, len - domain_len);
2661 if (!strcmp(domain, "org.hydrogenaudio.replaygain"))
2662 return mov_read_replaygain(c, pb, end - avio_tell(pb));
2666 av_log(c->fc, AV_LOG_VERBOSE,
2667 "Unhandled or malformed custom metadata of size %"PRId64"\n", atom.size);
2671 static int mov_read_meta(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2673 while (atom.size > 8) {
2674 uint32_t tag = avio_rl32(pb);
2676 if (tag == MKTAG('h','d','l','r')) {
2677 avio_seek(pb, -8, SEEK_CUR);
2679 return mov_read_default(c, pb, atom);
2685 static int mov_read_tkhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2690 int64_t disp_transform[2];
2691 int display_matrix[3][3];
2693 MOVStreamContext *sc;
2697 if (c->fc->nb_streams < 1)
2699 st = c->fc->streams[c->fc->nb_streams-1];
2702 version = avio_r8(pb);
2703 flags = avio_rb24(pb);
2704 st->disposition |= (flags & MOV_TKHD_FLAG_ENABLED) ? AV_DISPOSITION_DEFAULT : 0;
2710 avio_rb32(pb); /* creation time */
2711 avio_rb32(pb); /* modification time */
2713 st->id = (int)avio_rb32(pb); /* track id (NOT 0 !)*/
2714 avio_rb32(pb); /* reserved */
2716 /* highlevel (considering edits) duration in movie timebase */
2717 (version == 1) ? avio_rb64(pb) : avio_rb32(pb);
2718 avio_rb32(pb); /* reserved */
2719 avio_rb32(pb); /* reserved */
2721 avio_rb16(pb); /* layer */
2722 avio_rb16(pb); /* alternate group */
2723 avio_rb16(pb); /* volume */
2724 avio_rb16(pb); /* reserved */
2726 //read in the display matrix (outlined in ISO 14496-12, Section 6.2.2)
2727 // they're kept in fixed point format through all calculations
2728 // save u,v,z to store the whole matrix in the AV_PKT_DATA_DISPLAYMATRIX
2729 // side data, but the scale factor is not needed to calculate aspect ratio
2730 for (i = 0; i < 3; i++) {
2731 display_matrix[i][0] = avio_rb32(pb); // 16.16 fixed point
2732 display_matrix[i][1] = avio_rb32(pb); // 16.16 fixed point
2733 display_matrix[i][2] = avio_rb32(pb); // 2.30 fixed point
2736 width = avio_rb32(pb); // 16.16 fixed point track width
2737 height = avio_rb32(pb); // 16.16 fixed point track height
2738 sc->width = width >> 16;
2739 sc->height = height >> 16;
2741 // save the matrix when it is not the default identity
2742 if (display_matrix[0][0] != (1 << 16) ||
2743 display_matrix[1][1] != (1 << 16) ||
2744 display_matrix[2][2] != (1 << 30) ||
2745 display_matrix[0][1] || display_matrix[0][2] ||
2746 display_matrix[1][0] || display_matrix[1][2] ||
2747 display_matrix[2][0] || display_matrix[2][1]) {
2750 av_freep(&sc->display_matrix);
2751 sc->display_matrix = av_malloc(sizeof(int32_t) * 9);
2752 if (!sc->display_matrix)
2753 return AVERROR(ENOMEM);
2755 for (i = 0; i < 3; i++)
2756 for (j = 0; j < 3; j++)
2757 sc->display_matrix[i * 3 + j] = display_matrix[i][j];
2760 // transform the display width/height according to the matrix
2761 // skip this when the display matrix is the identity one
2762 // to keep the same scale, use [width height 1<<16]
2763 if (width && height && sc->display_matrix) {
2764 for (i = 0; i < 2; i++)
2766 (int64_t) width * display_matrix[0][i] +
2767 (int64_t) height * display_matrix[1][i] +
2768 ((int64_t) display_matrix[2][i] << 16);
2770 //sample aspect ratio is new width/height divided by old width/height
2771 if (disp_transform[0] > 0 && disp_transform[1] > 0)
2772 st->sample_aspect_ratio = av_d2q(
2773 ((double) disp_transform[0] * height) /
2774 ((double) disp_transform[1] * width), INT_MAX);
2779 static int mov_read_tfhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2781 MOVFragment *frag = &c->fragment;
2782 MOVTrackExt *trex = NULL;
2783 int flags, track_id, i;
2785 avio_r8(pb); /* version */
2786 flags = avio_rb24(pb);
2788 track_id = avio_rb32(pb);
2790 return AVERROR_INVALIDDATA;
2791 frag->track_id = track_id;
2792 for (i = 0; i < c->trex_count; i++)
2793 if (c->trex_data[i].track_id == frag->track_id) {
2794 trex = &c->trex_data[i];
2798 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding trex\n");
2799 return AVERROR_INVALIDDATA;
2802 frag->base_data_offset = flags & MOV_TFHD_BASE_DATA_OFFSET ?
2803 avio_rb64(pb) : flags & MOV_TFHD_DEFAULT_BASE_IS_MOOF ?
2804 frag->moof_offset : frag->implicit_offset;
2805 frag->stsd_id = flags & MOV_TFHD_STSD_ID ? avio_rb32(pb) : trex->stsd_id;
2807 frag->duration = flags & MOV_TFHD_DEFAULT_DURATION ?
2808 avio_rb32(pb) : trex->duration;
2809 frag->size = flags & MOV_TFHD_DEFAULT_SIZE ?
2810 avio_rb32(pb) : trex->size;
2811 frag->flags = flags & MOV_TFHD_DEFAULT_FLAGS ?
2812 avio_rb32(pb) : trex->flags;
2813 av_log(c->fc, AV_LOG_TRACE, "frag flags 0x%x\n", frag->flags);
2817 static int mov_read_chap(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2819 c->chapter_track = avio_rb32(pb);
2823 static int mov_read_trex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2828 if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data))
2829 return AVERROR_INVALIDDATA;
2830 if ((err = av_reallocp_array(&c->trex_data, c->trex_count + 1,
2831 sizeof(*c->trex_data))) < 0) {
2835 trex = &c->trex_data[c->trex_count++];
2836 avio_r8(pb); /* version */
2837 avio_rb24(pb); /* flags */
2838 trex->track_id = avio_rb32(pb);
2839 trex->stsd_id = avio_rb32(pb);
2840 trex->duration = avio_rb32(pb);
2841 trex->size = avio_rb32(pb);
2842 trex->flags = avio_rb32(pb);
2846 static int mov_read_tfdt(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2848 MOVFragment *frag = &c->fragment;
2849 AVStream *st = NULL;
2850 MOVStreamContext *sc;
2853 for (i = 0; i < c->fc->nb_streams; i++) {
2854 if (c->fc->streams[i]->id == frag->track_id) {
2855 st = c->fc->streams[i];
2860 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id);
2861 return AVERROR_INVALIDDATA;
2864 if (sc->pseudo_stream_id + 1 != frag->stsd_id)
2866 version = avio_r8(pb);
2867 avio_rb24(pb); /* flags */
2869 sc->track_end = avio_rb64(pb);
2871 sc->track_end = avio_rb32(pb);
2876 static int mov_read_trun(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2878 MOVFragment *frag = &c->fragment;
2879 AVStream *st = NULL;
2880 MOVStreamContext *sc;
2884 int data_offset = 0;
2885 unsigned entries, first_sample_flags = frag->flags;
2886 int flags, distance, i, err;
2888 for (i = 0; i < c->fc->nb_streams; i++) {
2889 if (c->fc->streams[i]->id == frag->track_id) {
2890 st = c->fc->streams[i];
2895 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id);
2896 return AVERROR_INVALIDDATA;
2899 if (sc->pseudo_stream_id+1 != frag->stsd_id)
2901 avio_r8(pb); /* version */
2902 flags = avio_rb24(pb);
2903 entries = avio_rb32(pb);
2904 av_log(c->fc, AV_LOG_TRACE, "flags 0x%x entries %d\n", flags, entries);
2906 /* Always assume the presence of composition time offsets.
2907 * Without this assumption, for instance, we cannot deal with a track in fragmented movies that meet the following.
2908 * 1) in the initial movie, there are no samples.
2909 * 2) in the first movie fragment, there is only one sample without composition time offset.
2910 * 3) in the subsequent movie fragments, there are samples with composition time offset. */
2911 if (!sc->ctts_count && sc->sample_count)
2913 /* Complement ctts table if moov atom doesn't have ctts atom. */
2914 ctts_data = av_realloc(NULL, sizeof(*sc->ctts_data));
2916 return AVERROR(ENOMEM);
2917 sc->ctts_data = ctts_data;
2918 sc->ctts_data[sc->ctts_count].count = sc->sample_count;
2919 sc->ctts_data[sc->ctts_count].duration = 0;
2922 if ((uint64_t)entries+sc->ctts_count >= UINT_MAX/sizeof(*sc->ctts_data))
2923 return AVERROR_INVALIDDATA;
2924 if ((err = av_reallocp_array(&sc->ctts_data, entries + sc->ctts_count,
2925 sizeof(*sc->ctts_data))) < 0) {
2929 if (flags & MOV_TRUN_DATA_OFFSET) data_offset = avio_rb32(pb);
2930 if (flags & MOV_TRUN_FIRST_SAMPLE_FLAGS) first_sample_flags = avio_rb32(pb);
2931 dts = sc->track_end - sc->time_offset;
2932 offset = frag->base_data_offset + data_offset;
2934 av_log(c->fc, AV_LOG_TRACE, "first sample flags 0x%x\n", first_sample_flags);
2935 for (i = 0; i < entries && !pb->eof_reached; i++) {
2936 unsigned sample_size = frag->size;
2937 int sample_flags = i ? frag->flags : first_sample_flags;
2938 unsigned sample_duration = frag->duration;
2941 if (flags & MOV_TRUN_SAMPLE_DURATION) sample_duration = avio_rb32(pb);
2942 if (flags & MOV_TRUN_SAMPLE_SIZE) sample_size = avio_rb32(pb);
2943 if (flags & MOV_TRUN_SAMPLE_FLAGS) sample_flags = avio_rb32(pb);
2944 sc->ctts_data[sc->ctts_count].count = 1;
2945 sc->ctts_data[sc->ctts_count].duration = (flags & MOV_TRUN_SAMPLE_CTS) ?
2948 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)
2952 !(sample_flags & (MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC |
2953 MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES));
2956 av_add_index_entry(st, offset, dts, sample_size, distance,
2957 keyframe ? AVINDEX_KEYFRAME : 0);
2958 av_log(c->fc, AV_LOG_TRACE, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
2959 "size %d, distance %d, keyframe %d\n", st->index, sc->sample_count+i,
2960 offset, dts, sample_size, distance, keyframe);
2962 dts += sample_duration;
2963 offset += sample_size;
2964 sc->data_size += sample_size;
2967 if (pb->eof_reached)
2970 frag->implicit_offset = offset;
2971 st->duration = sc->track_end = dts + sc->time_offset;
2975 /* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
2976 /* like the files created with Adobe Premiere 5.0, for samples see */
2977 /* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
2978 static int mov_read_wide(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2983 return 0; /* continue */
2984 if (avio_rb32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
2985 avio_skip(pb, atom.size - 4);
2988 atom.type = avio_rl32(pb);
2990 if (atom.type != MKTAG('m','d','a','t')) {
2991 avio_skip(pb, atom.size);
2994 err = mov_read_mdat(c, pb, atom);
2998 static int mov_read_cmov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
3003 uint8_t *moov_data; /* uncompressed data */
3004 long cmov_len, moov_len;
3007 avio_rb32(pb); /* dcom atom */
3008 if (avio_rl32(pb) != MKTAG('d','c','o','m'))
3009 return AVERROR_INVALIDDATA;
3010 if (avio_rl32(pb) != MKTAG('z','l','i','b')) {
3011 av_log(c->fc, AV_LOG_ERROR, "unknown compression for cmov atom !");
3012 return AVERROR_INVALIDDATA;
3014 avio_rb32(pb); /* cmvd atom */
3015 if (avio_rl32(pb) != MKTAG('c','m','v','d'))
3016 return AVERROR_INVALIDDATA;
3017 moov_len = avio_rb32(pb); /* uncompressed size */
3018 cmov_len = atom.size - 6 * 4;
3020 cmov_data = av_malloc(cmov_len);
3022 return AVERROR(ENOMEM);
3023 moov_data = av_malloc(moov_len);
3026 return AVERROR(ENOMEM);
3028 ret = ffio_read_size(pb, cmov_data, cmov_len);
3030 goto free_and_return;
3032 if (uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
3033 goto free_and_return;
3034 if (ffio_init_context(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
3035 goto free_and_return;
3036 atom.type = MKTAG('m','o','o','v');
3037 atom.size = moov_len;
3038 ret = mov_read_default(c, &ctx, atom);
3044 av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
3045 return AVERROR(ENOSYS);
3049 /* edit list atom */
3050 static int mov_read_elst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
3052 MOVStreamContext *sc;
3053 int i, edit_count, version;
3055 if (c->fc->nb_streams < 1)
3057 sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
3059 version = avio_r8(pb); /* version */
3060 avio_rb24(pb); /* flags */
3061 edit_count = avio_rb32(pb); /* entries */
3063 if ((uint64_t)edit_count*12+8 > atom.size)
3064 return AVERROR_INVALIDDATA;
3066 for (i=0; i<edit_count; i++){
3070 duration = avio_rb64(pb);
3071 time = avio_rb64(pb);
3073 duration = avio_rb32(pb); /* segment duration */
3074 time = (int32_t)avio_rb32(pb); /* media time */
3076 avio_rb32(pb); /* Media rate */
3077 if (i == 0 && time >= -1) {
3078 sc->time_offset = time != -1 ? time : -duration;
3083 av_log(c->fc, AV_LOG_WARNING, "multiple edit list entries, "
3084 "a/v desync might occur, patch welcome\n");
3086 av_log(c->fc, AV_LOG_TRACE, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, edit_count);
3090 static const MOVParseTableEntry mov_default_parse_table[] = {
3091 { MKTAG('a','v','s','s'), mov_read_extradata },
3092 { MKTAG('c','h','p','l'), mov_read_chpl },
3093 { MKTAG('c','o','6','4'), mov_read_stco },
3094 { MKTAG('c','o','l','r'), mov_read_colr },
3095 { MKTAG('c','t','t','s'), mov_read_ctts }, /* composition time to sample */
3096 { MKTAG('d','i','n','f'), mov_read_default },
3097 { MKTAG('d','r','e','f'), mov_read_dref },
3098 { MKTAG('e','d','t','s'), mov_read_default },
3099 { MKTAG('e','l','s','t'), mov_read_elst },
3100 { MKTAG('e','n','d','a'), mov_read_enda },
3101 { MKTAG('f','i','e','l'), mov_read_fiel },
3102 { MKTAG('f','t','y','p'), mov_read_ftyp },
3103 { MKTAG('g','l','b','l'), mov_read_glbl },
3104 { MKTAG('h','d','l','r'), mov_read_hdlr },
3105 { MKTAG('i','l','s','t'), mov_read_ilst },
3106 { MKTAG('j','p','2','h'), mov_read_extradata },
3107 { MKTAG('m','d','a','t'), mov_read_mdat },
3108 { MKTAG('m','d','h','d'), mov_read_mdhd },
3109 { MKTAG('m','d','i','a'), mov_read_default },
3110 { MKTAG('m','e','t','a'), mov_read_meta },
3111 { MKTAG('m','i','n','f'), mov_read_default },
3112 { MKTAG('m','o','o','f'), mov_read_moof },
3113 { MKTAG('m','o','o','v'), mov_read_moov },
3114 { MKTAG('m','v','e','x'), mov_read_default },
3115 { MKTAG('m','v','h','d'), mov_read_mvhd },
3116 { MKTAG('S','M','I',' '), mov_read_smi }, /* Sorenson extension ??? */
3117 { MKTAG('a','l','a','c'), mov_read_extradata }, /* alac specific atom */
3118 { MKTAG('a','v','c','C'), mov_read_glbl },
3119 { MKTAG('p','a','s','p'), mov_read_pasp },
3120 { MKTAG('s','t','b','l'), mov_read_default },
3121 { MKTAG('s','t','c','o'), mov_read_stco },
3122 { MKTAG('s','t','p','s'), mov_read_stps },
3123 { MKTAG('s','t','r','f'), mov_read_strf },
3124 { MKTAG('s','t','s','c'), mov_read_stsc },
3125 { MKTAG('s','t','s','d'), mov_read_stsd }, /* sample description */
3126 { MKTAG('s','t','s','s'), mov_read_stss }, /* sync sample */
3127 { MKTAG('s','t','s','z'), mov_read_stsz }, /* sample size */
3128 { MKTAG('s','t','t','s'), mov_read_stts },
3129 { MKTAG('s','t','z','2'), mov_read_stsz }, /* compact sample size */
3130 { MKTAG('t','k','h','d'), mov_read_tkhd }, /* track header */
3131 { MKTAG('t','f','d','t'), mov_read_tfdt },
3132 { MKTAG('t','f','h','d'), mov_read_tfhd }, /* track fragment header */
3133 { MKTAG('t','r','a','k'), mov_read_trak },
3134 { MKTAG('t','r','a','f'), mov_read_default },
3135 { MKTAG('t','r','e','f'), mov_read_default },
3136 { MKTAG('c','h','a','p'), mov_read_chap },
3137 { MKTAG('t','r','e','x'), mov_read_trex },
3138 { MKTAG('t','r','u','n'), mov_read_trun },
3139 { MKTAG('u','d','t','a'), mov_read_default },
3140 { MKTAG('w','a','v','e'), mov_read_wave },
3141 { MKTAG('e','s','d','s'), mov_read_esds },
3142 { MKTAG('d','a','c','3'), mov_read_dac3 }, /* AC-3 info */
3143 { MKTAG('d','e','c','3'), mov_read_dec3 }, /* EAC-3 info */
3144 { MKTAG('w','i','d','e'), mov_read_wide }, /* place holder */
3145 { MKTAG('w','f','e','x'), mov_read_wfex },
3146 { MKTAG('c','m','o','v'), mov_read_cmov },
3147 { MKTAG('c','h','a','n'), mov_read_chan }, /* channel layout */
3148 { MKTAG('d','v','c','1'), mov_read_dvc1 },
3149 { MKTAG('s','b','g','p'), mov_read_sbgp },
3150 { MKTAG('h','v','c','C'), mov_read_glbl },
3151 { MKTAG('-','-','-','-'), mov_read_custom },
3155 static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom)
3157 int64_t total_size = 0;
3162 atom.size = INT64_MAX;
3163 while (total_size + 8 < atom.size && !pb->eof_reached) {
3164 int (*parse)(MOVContext*, AVIOContext*, MOVAtom) = NULL;
3167 if (atom.size >= 8) {
3168 a.size = avio_rb32(pb);
3169 a.type = avio_rl32(pb);
3171 av_log(c->fc, AV_LOG_TRACE, "type: %08x '%.4s' parent:'%.4s' sz: %"PRId64" %"PRId64" %"PRId64"\n",
3172 a.type, (char*)&a.type, (char*)&atom.type, a.size, total_size, atom.size);
3174 if (a.size == 1) { /* 64 bit extended size */
3175 a.size = avio_rb64(pb) - 8;
3179 a.size = atom.size - total_size;
3186 a.size = FFMIN(a.size, atom.size - total_size);
3188 for (i = 0; mov_default_parse_table[i].type; i++)
3189 if (mov_default_parse_table[i].type == a.type) {
3190 parse = mov_default_parse_table[i].parse;
3194 // container is user data
3195 if (!parse && (atom.type == MKTAG('u','d','t','a') ||
3196 atom.type == MKTAG('i','l','s','t')))
3197 parse = mov_read_udta_string;
3199 if (!parse) { /* skip leaf atoms data */
3200 avio_skip(pb, a.size);
3202 int64_t start_pos = avio_tell(pb);
3204 int err = parse(c, pb, a);
3207 if (c->found_moov && c->found_mdat &&
3208 ((!pb->seekable || c->fc->flags & AVFMT_FLAG_IGNIDX) ||
3209 start_pos + a.size == avio_size(pb))) {
3210 if (!pb->seekable || c->fc->flags & AVFMT_FLAG_IGNIDX)
3211 c->next_root_atom = start_pos + a.size;
3214 left = a.size - avio_tell(pb) + start_pos;
3215 if (left > 0) /* skip garbage at atom end */
3216 avio_skip(pb, left);
3217 else if (left < 0) {
3218 av_log(c->fc, AV_LOG_WARNING,
3219 "overread end of atom '%.4s' by %"PRId64" bytes\n",
3220 (char*)&a.type, -left);
3221 avio_seek(pb, left, SEEK_CUR);
3225 total_size += a.size;
3228 if (total_size < atom.size && atom.size < 0x7ffff)
3229 avio_skip(pb, atom.size - total_size);
3234 static int mov_probe(AVProbeData *p)
3236 unsigned int offset;
3240 /* check file header */
3243 /* ignore invalid offset */
3244 if ((offset + 8) > (unsigned int)p->buf_size)
3246 tag = AV_RL32(p->buf + offset + 4);
3248 /* check for obvious tags */
3249 case MKTAG('j','P',' ',' '): /* jpeg 2000 signature */
3250 case MKTAG('m','o','o','v'):
3251 case MKTAG('m','d','a','t'):
3252 case MKTAG('p','n','o','t'): /* detect movs with preview pics like ew.mov and april.mov */
3253 case MKTAG('u','d','t','a'): /* Packet Video PVAuthor adds this and a lot of more junk */
3254 case MKTAG('f','t','y','p'):
3255 return AVPROBE_SCORE_MAX;
3256 /* those are more common words, so rate then a bit less */
3257 case MKTAG('e','d','i','w'): /* xdcam files have reverted first tags */
3258 case MKTAG('w','i','d','e'):
3259 case MKTAG('f','r','e','e'):
3260 case MKTAG('j','u','n','k'):
3261 case MKTAG('p','i','c','t'):
3262 return AVPROBE_SCORE_MAX - 5;
3263 case MKTAG(0x82,0x82,0x7f,0x7d):
3264 case MKTAG('s','k','i','p'):
3265 case MKTAG('u','u','i','d'):
3266 case MKTAG('p','r','f','l'):
3267 offset = AV_RB32(p->buf+offset) + offset;
3268 /* if we only find those cause probedata is too small at least rate them */
3269 score = AVPROBE_SCORE_EXTENSION;
3272 /* unrecognized tag */
3278 // must be done after parsing all trak because there's no order requirement
3279 static void mov_read_chapters(AVFormatContext *s)
3281 MOVContext *mov = s->priv_data;
3282 AVStream *st = NULL;
3283 MOVStreamContext *sc;
3287 for (i = 0; i < s->nb_streams; i++)
3288 if (s->streams[i]->id == mov->chapter_track) {
3293 av_log(s, AV_LOG_ERROR, "Referenced QT chapter track not found\n");
3297 st->discard = AVDISCARD_ALL;
3299 cur_pos = avio_tell(sc->pb);
3301 for (i = 0; i < st->nb_index_entries; i++) {
3302 AVIndexEntry *sample = &st->index_entries[i];
3303 int64_t end = i+1 < st->nb_index_entries ? st->index_entries[i+1].timestamp : st->duration;
3308 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
3309 av_log(s, AV_LOG_ERROR, "Chapter %d not found in file\n", i);
3313 // the first two bytes are the length of the title
3314 len = avio_rb16(sc->pb);
3315 if (len > sample->size-2)
3317 title_len = 2*len + 1;
3318 if (!(title = av_mallocz(title_len)))
3321 // The samples could theoretically be in any encoding if there's an encd
3322 // atom following, but in practice are only utf-8 or utf-16, distinguished
3323 // instead by the presence of a BOM
3327 ch = avio_rb16(sc->pb);
3329 avio_get_str16be(sc->pb, len, title, title_len);
3330 else if (ch == 0xfffe)
3331 avio_get_str16le(sc->pb, len, title, title_len);
3334 if (len == 1 || len == 2)
3337 avio_get_str(sc->pb, len - 2, title + 2, title_len - 2);
3341 avpriv_new_chapter(s, i, st->time_base, sample->timestamp, end, title);
3345 avio_seek(sc->pb, cur_pos, SEEK_SET);
3348 static int mov_read_close(AVFormatContext *s)
3350 MOVContext *mov = s->priv_data;
3353 for (i = 0; i < s->nb_streams; i++) {
3354 AVStream *st = s->streams[i];
3355 MOVStreamContext *sc = st->priv_data;
3357 av_freep(&sc->ctts_data);
3358 for (j = 0; j < sc->drefs_count; j++) {
3359 av_freep(&sc->drefs[j].path);
3360 av_freep(&sc->drefs[j].dir);
3362 av_freep(&sc->drefs);
3363 if (sc->pb && sc->pb != s->pb)
3364 ff_format_io_close(s, &sc->pb);
3366 av_freep(&sc->chunk_offsets);
3367 av_freep(&sc->stsc_data);
3368 av_freep(&sc->sample_sizes);
3369 av_freep(&sc->keyframes);
3370 av_freep(&sc->stts_data);
3371 av_freep(&sc->stps_data);
3372 av_freep(&sc->rap_group);
3373 av_freep(&sc->display_matrix);
3376 if (mov->dv_demux) {
3377 avformat_free_context(mov->dv_fctx);
3378 mov->dv_fctx = NULL;
3381 av_freep(&mov->trex_data);
3386 static int mov_read_header(AVFormatContext *s)
3388 MOVContext *mov = s->priv_data;
3389 AVIOContext *pb = s->pb;
3391 MOVAtom atom = { AV_RL32("root") };
3395 /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
3397 atom.size = avio_size(pb);
3399 atom.size = INT64_MAX;
3401 /* check MOV header */
3402 if ((err = mov_read_default(mov, pb, atom)) < 0) {
3403 av_log(s, AV_LOG_ERROR, "error reading header: %d\n", err);
3407 if (!mov->found_moov) {
3408 av_log(s, AV_LOG_ERROR, "moov atom not found\n");
3410 return AVERROR_INVALIDDATA;
3412 av_log(mov->fc, AV_LOG_TRACE, "on_parse_exit_offset=%"PRId64"\n", avio_tell(pb));
3414 if (pb->seekable && mov->chapter_track > 0)
3415 mov_read_chapters(s);
3417 for (i = 0; i < s->nb_streams; i++) {
3418 AVStream *st = s->streams[i];
3419 MOVStreamContext *sc = st->priv_data;
3421 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3422 if (st->codecpar->width <= 0 || st->codecpar->height <= 0) {
3423 st->codecpar->width = sc->width;
3424 st->codecpar->height = sc->height;
3426 if (st->codecpar->codec_id == AV_CODEC_ID_DVD_SUBTITLE) {
3427 if ((err = mov_rewrite_dvd_sub_extradata(st)) < 0)
3433 if (mov->trex_data) {
3434 for (i = 0; i < s->nb_streams; i++) {
3435 AVStream *st = s->streams[i];
3436 MOVStreamContext *sc = st->priv_data;
3437 if (st->duration > 0)
3438 st->codecpar->bit_rate = sc->data_size * 8 * sc->time_scale / st->duration;
3442 for (i = 0; i < s->nb_streams; i++) {
3443 AVStream *st = s->streams[i];
3444 MOVStreamContext *sc = st->priv_data;
3446 switch (st->codecpar->codec_type) {
3447 case AVMEDIA_TYPE_AUDIO:
3448 err = ff_replaygain_export(st, s->metadata);
3454 case AVMEDIA_TYPE_VIDEO:
3455 if (sc->display_matrix) {
3456 AVPacketSideData *sd, *tmp;
3458 tmp = av_realloc_array(st->side_data,
3459 st->nb_side_data + 1, sizeof(*tmp));
3461 return AVERROR(ENOMEM);
3463 st->side_data = tmp;
3466 sd = &st->side_data[st->nb_side_data - 1];
3467 sd->type = AV_PKT_DATA_DISPLAYMATRIX;
3468 sd->size = sizeof(int32_t) * 9;
3469 sd->data = (uint8_t*)sc->display_matrix;
3470 sc->display_matrix = NULL;
3479 static AVIndexEntry *mov_find_next_sample(AVFormatContext *s, AVStream **st)
3481 AVIndexEntry *sample = NULL;
3482 int64_t best_dts = INT64_MAX;
3484 for (i = 0; i < s->nb_streams; i++) {
3485 AVStream *avst = s->streams[i];
3486 MOVStreamContext *msc = avst->priv_data;
3487 if (msc->pb && msc->current_sample < avst->nb_index_entries) {
3488 AVIndexEntry *current_sample = &avst->index_entries[msc->current_sample];
3489 int64_t dts = av_rescale(current_sample->timestamp, AV_TIME_BASE, msc->time_scale);
3490 av_log(s, AV_LOG_TRACE, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
3491 if (!sample || (!s->pb->seekable && current_sample->pos < sample->pos) ||
3493 ((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb &&
3494 ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
3495 (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) {
3496 sample = current_sample;
3505 static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
3507 MOVContext *mov = s->priv_data;
3508 MOVStreamContext *sc;
3509 AVIndexEntry *sample;
3510 AVStream *st = NULL;
3513 sample = mov_find_next_sample(s, &st);
3515 mov->found_mdat = 0;
3516 if (!mov->next_root_atom)
3518 avio_seek(s->pb, mov->next_root_atom, SEEK_SET);
3519 mov->next_root_atom = 0;
3520 if (mov_read_default(mov, s->pb, (MOVAtom){ AV_RL32("root"), INT64_MAX }) < 0 ||
3523 av_log(s, AV_LOG_TRACE, "read fragments, offset 0x%"PRIx64"\n", avio_tell(s->pb));
3527 /* must be done just before reading, to avoid infinite loop on sample */
3528 sc->current_sample++;
3530 if (st->discard != AVDISCARD_ALL) {
3531 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
3532 av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
3533 sc->ffindex, sample->pos);
3534 return AVERROR_INVALIDDATA;
3536 ret = av_get_packet(sc->pb, pkt, sample->size);
3539 if (sc->has_palette) {
3542 pal = av_packet_new_side_data(pkt, AV_PKT_DATA_PALETTE, AVPALETTE_SIZE);
3544 av_log(mov->fc, AV_LOG_ERROR, "Cannot append palette to packet\n");
3546 memcpy(pal, sc->palette, AVPALETTE_SIZE);
3547 sc->has_palette = 0;
3550 #if CONFIG_DV_DEMUXER
3551 if (mov->dv_demux && sc->dv_audio_container) {
3552 avpriv_dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size);
3555 ret = avpriv_dv_get_packet(mov->dv_demux, pkt);
3562 pkt->stream_index = sc->ffindex;
3563 pkt->dts = sample->timestamp;
3564 if (sc->ctts_data && sc->ctts_index < sc->ctts_count) {
3565 pkt->pts = pkt->dts + sc->dts_shift + sc->ctts_data[sc->ctts_index].duration;
3566 /* update ctts context */
3568 if (sc->ctts_index < sc->ctts_count &&
3569 sc->ctts_data[sc->ctts_index].count == sc->ctts_sample) {
3571 sc->ctts_sample = 0;
3574 pkt->dts = AV_NOPTS_VALUE;
3576 int64_t next_dts = (sc->current_sample < st->nb_index_entries) ?
3577 st->index_entries[sc->current_sample].timestamp : st->duration;
3578 pkt->duration = next_dts - pkt->dts;
3579 pkt->pts = pkt->dts;
3581 if (st->discard == AVDISCARD_ALL)
3583 pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? AV_PKT_FLAG_KEY : 0;
3584 pkt->pos = sample->pos;
3585 av_log(s, AV_LOG_TRACE, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %"PRId64"\n",
3586 pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
3590 static int mov_seek_stream(AVFormatContext *s, AVStream *st, int64_t timestamp, int flags)
3592 MOVStreamContext *sc = st->priv_data;
3593 int sample, time_sample;
3596 sample = av_index_search_timestamp(st, timestamp, flags);
3597 av_log(s, AV_LOG_TRACE, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
3598 if (sample < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
3600 if (sample < 0) /* not sure what to do */
3601 return AVERROR_INVALIDDATA;
3602 sc->current_sample = sample;
3603 av_log(s, AV_LOG_TRACE, "stream %d, found sample %d\n", st->index, sc->current_sample);
3604 /* adjust ctts index */
3605 if (sc->ctts_data) {
3607 for (i = 0; i < sc->ctts_count; i++) {
3608 int next = time_sample + sc->ctts_data[i].count;
3609 if (next > sc->current_sample) {
3611 sc->ctts_sample = sc->current_sample - time_sample;
3620 static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
3622 MOVContext *mc = s->priv_data;
3627 if (stream_index >= s->nb_streams)
3628 return AVERROR_INVALIDDATA;
3629 if (sample_time < 0)
3632 st = s->streams[stream_index];
3633 sample = mov_seek_stream(s, st, sample_time, flags);
3637 if (mc->seek_individually) {
3638 /* adjust seek timestamp to found sample timestamp */
3639 int64_t seek_timestamp = st->index_entries[sample].timestamp;
3641 for (i = 0; i < s->nb_streams; i++) {
3644 if (stream_index == i)
3647 timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
3648 mov_seek_stream(s, st, timestamp, flags);
3651 for (i = 0; i < s->nb_streams; i++) {
3652 MOVStreamContext *sc;
3655 sc->current_sample = 0;
3658 MOVStreamContext *sc;
3659 AVIndexEntry *entry = mov_find_next_sample(s, &st);
3661 return AVERROR_INVALIDDATA;
3663 if (sc->ffindex == stream_index && sc->current_sample == sample)
3665 sc->current_sample++;
3671 #define OFFSET(x) offsetof(MOVContext, x)
3672 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
3673 static const AVOption mov_options[] = {
3674 {"seek_streams_individually",
3675 "Seek each stream individually to the to the closest point",
3676 OFFSET(seek_individually), AV_OPT_TYPE_INT, { .i64 = 1 },
3678 { "export_all", "Export unrecognized metadata entries", OFFSET(export_all),
3679 AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, .flags = FLAGS },
3680 { "export_xmp", "Export full XMP metadata", OFFSET(export_xmp),
3681 AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, .flags = FLAGS },
3682 { "enable_drefs", "Enable external track support.", OFFSET(enable_drefs),
3683 AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, .flags = FLAGS },
3687 static const AVClass mov_class = {
3688 .class_name = "mov,mp4,m4a,3gp,3g2,mj2",
3689 .item_name = av_default_item_name,
3690 .option = mov_options,
3691 .version = LIBAVUTIL_VERSION_INT,
3694 AVInputFormat ff_mov_demuxer = {
3695 .name = "mov,mp4,m4a,3gp,3g2,mj2",
3696 .long_name = NULL_IF_CONFIG_SMALL("QuickTime / MOV"),
3697 .priv_class = &mov_class,
3698 .priv_data_size = sizeof(MOVContext),
3699 .extensions = "mov,mp4,m4a,3gp,3g2,mj2",
3700 .read_probe = mov_probe,
3701 .read_header = mov_read_header,
3702 .read_packet = mov_read_packet,
3703 .read_close = mov_read_close,
3704 .read_seek = mov_read_seek,