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 FFmpeg.
11 * FFmpeg 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 * FFmpeg 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 FFmpeg; 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/internal.h"
33 #include "libavutil/intreadwrite.h"
34 #include "libavutil/intfloat.h"
35 #include "libavutil/mathematics.h"
36 #include "libavutil/time_internal.h"
37 #include "libavutil/avstring.h"
38 #include "libavutil/dict.h"
39 #include "libavutil/display.h"
40 #include "libavutil/opt.h"
41 #include "libavutil/aes.h"
42 #include "libavutil/aes_ctr.h"
43 #include "libavutil/sha.h"
44 #include "libavutil/timecode.h"
45 #include "libavcodec/ac3tab.h"
46 #include "libavcodec/mpegaudiodecheader.h"
49 #include "avio_internal.h"
52 #include "libavcodec/get_bits.h"
55 #include "replaygain.h"
61 #include "qtpalette.h"
63 /* those functions parse an atom */
64 /* links atom IDs to parse functions */
65 typedef struct MOVParseTableEntry {
67 int (*parse)(MOVContext *ctx, AVIOContext *pb, MOVAtom atom);
70 static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom);
71 static int mov_read_mfra(MOVContext *c, AVIOContext *f);
73 static int mov_metadata_track_or_disc_number(MOVContext *c, AVIOContext *pb,
74 unsigned len, const char *key)
78 short current, total = 0;
79 avio_rb16(pb); // unknown
80 current = avio_rb16(pb);
82 total = avio_rb16(pb);
84 snprintf(buf, sizeof(buf), "%d", current);
86 snprintf(buf, sizeof(buf), "%d/%d", current, total);
87 c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
88 av_dict_set(&c->fc->metadata, key, buf, 0);
93 static int mov_metadata_int8_bypass_padding(MOVContext *c, AVIOContext *pb,
94 unsigned len, const char *key)
96 /* bypass padding bytes */
101 c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
102 av_dict_set_int(&c->fc->metadata, key, avio_r8(pb), 0);
107 static int mov_metadata_int8_no_padding(MOVContext *c, AVIOContext *pb,
108 unsigned len, const char *key)
110 c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
111 av_dict_set_int(&c->fc->metadata, key, avio_r8(pb), 0);
116 static int mov_metadata_gnre(MOVContext *c, AVIOContext *pb,
117 unsigned len, const char *key)
121 avio_r8(pb); // unknown
124 if (genre < 1 || genre > ID3v1_GENRE_MAX)
126 c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
127 av_dict_set(&c->fc->metadata, key, ff_id3v1_genre_str[genre-1], 0);
132 static const uint32_t mac_to_unicode[128] = {
133 0x00C4,0x00C5,0x00C7,0x00C9,0x00D1,0x00D6,0x00DC,0x00E1,
134 0x00E0,0x00E2,0x00E4,0x00E3,0x00E5,0x00E7,0x00E9,0x00E8,
135 0x00EA,0x00EB,0x00ED,0x00EC,0x00EE,0x00EF,0x00F1,0x00F3,
136 0x00F2,0x00F4,0x00F6,0x00F5,0x00FA,0x00F9,0x00FB,0x00FC,
137 0x2020,0x00B0,0x00A2,0x00A3,0x00A7,0x2022,0x00B6,0x00DF,
138 0x00AE,0x00A9,0x2122,0x00B4,0x00A8,0x2260,0x00C6,0x00D8,
139 0x221E,0x00B1,0x2264,0x2265,0x00A5,0x00B5,0x2202,0x2211,
140 0x220F,0x03C0,0x222B,0x00AA,0x00BA,0x03A9,0x00E6,0x00F8,
141 0x00BF,0x00A1,0x00AC,0x221A,0x0192,0x2248,0x2206,0x00AB,
142 0x00BB,0x2026,0x00A0,0x00C0,0x00C3,0x00D5,0x0152,0x0153,
143 0x2013,0x2014,0x201C,0x201D,0x2018,0x2019,0x00F7,0x25CA,
144 0x00FF,0x0178,0x2044,0x20AC,0x2039,0x203A,0xFB01,0xFB02,
145 0x2021,0x00B7,0x201A,0x201E,0x2030,0x00C2,0x00CA,0x00C1,
146 0x00CB,0x00C8,0x00CD,0x00CE,0x00CF,0x00CC,0x00D3,0x00D4,
147 0xF8FF,0x00D2,0x00DA,0x00DB,0x00D9,0x0131,0x02C6,0x02DC,
148 0x00AF,0x02D8,0x02D9,0x02DA,0x00B8,0x02DD,0x02DB,0x02C7,
151 static int mov_read_mac_string(MOVContext *c, AVIOContext *pb, int len,
152 char *dst, int dstlen)
155 char *end = dst+dstlen-1;
158 for (i = 0; i < len; i++) {
159 uint8_t t, c = avio_r8(pb);
160 if (c < 0x80 && p < end)
163 PUT_UTF8(mac_to_unicode[c-0x80], t, if (p < end) *p++ = t;);
169 static int mov_read_covr(MOVContext *c, AVIOContext *pb, int type, int len)
173 MOVStreamContext *sc;
178 case 0xd: id = AV_CODEC_ID_MJPEG; break;
179 case 0xe: id = AV_CODEC_ID_PNG; break;
180 case 0x1b: id = AV_CODEC_ID_BMP; break;
182 av_log(c->fc, AV_LOG_WARNING, "Unknown cover type: 0x%x.\n", type);
187 st = avformat_new_stream(c->fc, NULL);
189 return AVERROR(ENOMEM);
190 sc = av_mallocz(sizeof(*sc));
192 return AVERROR(ENOMEM);
195 ret = av_get_packet(pb, &pkt, len);
199 if (pkt.size >= 8 && id != AV_CODEC_ID_BMP) {
200 if (AV_RB64(pkt.data) == 0x89504e470d0a1a0a) {
201 id = AV_CODEC_ID_PNG;
203 id = AV_CODEC_ID_MJPEG;
207 st->disposition |= AV_DISPOSITION_ATTACHED_PIC;
209 st->attached_pic = pkt;
210 st->attached_pic.stream_index = st->index;
211 st->attached_pic.flags |= AV_PKT_FLAG_KEY;
213 st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
214 st->codecpar->codec_id = id;
220 static int mov_metadata_loci(MOVContext *c, AVIOContext *pb, unsigned len)
222 char language[4] = { 0 };
223 char buf[200], place[100];
224 uint16_t langcode = 0;
225 double longitude, latitude, altitude;
226 const char *key = "location";
228 if (len < 4 + 2 + 1 + 1 + 4 + 4 + 4) {
229 av_log(c->fc, AV_LOG_ERROR, "loci too short\n");
230 return AVERROR_INVALIDDATA;
233 avio_skip(pb, 4); // version+flags
234 langcode = avio_rb16(pb);
235 ff_mov_lang_to_iso639(langcode, language);
238 len -= avio_get_str(pb, len, place, sizeof(place));
240 av_log(c->fc, AV_LOG_ERROR, "place name too long\n");
241 return AVERROR_INVALIDDATA;
243 avio_skip(pb, 1); // role
247 av_log(c->fc, AV_LOG_ERROR,
248 "loci too short (%u bytes left, need at least %d)\n", len, 12);
249 return AVERROR_INVALIDDATA;
251 longitude = ((int32_t) avio_rb32(pb)) / (float) (1 << 16);
252 latitude = ((int32_t) avio_rb32(pb)) / (float) (1 << 16);
253 altitude = ((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);
258 av_strlcatf(buf, sizeof(buf), "%+f", altitude);
259 av_strlcatf(buf, sizeof(buf), "/%s", place);
261 if (*language && strcmp(language, "und")) {
263 snprintf(key2, sizeof(key2), "%s-%s", key, language);
264 av_dict_set(&c->fc->metadata, key2, buf, 0);
266 c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
267 return av_dict_set(&c->fc->metadata, key, buf, 0);
270 static int mov_read_udta_string(MOVContext *c, AVIOContext *pb, MOVAtom atom)
273 char key2[32], language[4] = {0};
275 const char *key = NULL;
276 uint16_t langcode = 0;
277 uint32_t data_type = 0, str_size, str_size_alloc;
278 int (*parse)(MOVContext*, AVIOContext*, unsigned, const char*) = NULL;
283 case MKTAG( '@','P','R','M'): key = "premiere_version"; raw = 1; break;
284 case MKTAG( '@','P','R','Q'): key = "quicktime_version"; raw = 1; break;
285 case MKTAG( 'X','M','P','_'):
286 if (c->export_xmp) { key = "xmp"; raw = 1; } break;
287 case MKTAG( 'a','A','R','T'): key = "album_artist"; break;
288 case MKTAG( 'a','k','I','D'): key = "account_type";
289 parse = mov_metadata_int8_no_padding; break;
290 case MKTAG( 'a','p','I','D'): key = "account_id"; break;
291 case MKTAG( 'c','a','t','g'): key = "category"; break;
292 case MKTAG( 'c','p','i','l'): key = "compilation";
293 parse = mov_metadata_int8_no_padding; break;
294 case MKTAG( 'c','p','r','t'): key = "copyright"; break;
295 case MKTAG( 'd','e','s','c'): key = "description"; break;
296 case MKTAG( 'd','i','s','k'): key = "disc";
297 parse = mov_metadata_track_or_disc_number; break;
298 case MKTAG( 'e','g','i','d'): key = "episode_uid";
299 parse = mov_metadata_int8_no_padding; break;
300 case MKTAG( 'g','n','r','e'): key = "genre";
301 parse = mov_metadata_gnre; break;
302 case MKTAG( 'h','d','v','d'): key = "hd_video";
303 parse = mov_metadata_int8_no_padding; break;
304 case MKTAG( 'k','e','y','w'): key = "keywords"; break;
305 case MKTAG( 'l','d','e','s'): key = "synopsis"; break;
306 case MKTAG( 'l','o','c','i'):
307 return mov_metadata_loci(c, pb, atom.size);
308 case MKTAG( 'p','c','s','t'): key = "podcast";
309 parse = mov_metadata_int8_no_padding; break;
310 case MKTAG( 'p','g','a','p'): key = "gapless_playback";
311 parse = mov_metadata_int8_no_padding; break;
312 case MKTAG( 'p','u','r','d'): key = "purchase_date"; break;
313 case MKTAG( 'r','t','n','g'): key = "rating";
314 parse = mov_metadata_int8_no_padding; break;
315 case MKTAG( 's','o','a','a'): key = "sort_album_artist"; break;
316 case MKTAG( 's','o','a','l'): key = "sort_album"; break;
317 case MKTAG( 's','o','a','r'): key = "sort_artist"; break;
318 case MKTAG( 's','o','c','o'): key = "sort_composer"; break;
319 case MKTAG( 's','o','n','m'): key = "sort_name"; break;
320 case MKTAG( 's','o','s','n'): key = "sort_show"; break;
321 case MKTAG( 's','t','i','k'): key = "media_type";
322 parse = mov_metadata_int8_no_padding; break;
323 case MKTAG( 't','r','k','n'): key = "track";
324 parse = mov_metadata_track_or_disc_number; break;
325 case MKTAG( 't','v','e','n'): key = "episode_id"; break;
326 case MKTAG( 't','v','e','s'): key = "episode_sort";
327 parse = mov_metadata_int8_bypass_padding; break;
328 case MKTAG( 't','v','n','n'): key = "network"; break;
329 case MKTAG( 't','v','s','h'): key = "show"; break;
330 case MKTAG( 't','v','s','n'): key = "season_number";
331 parse = mov_metadata_int8_bypass_padding; break;
332 case MKTAG(0xa9,'A','R','T'): key = "artist"; break;
333 case MKTAG(0xa9,'P','R','D'): key = "producer"; break;
334 case MKTAG(0xa9,'a','l','b'): key = "album"; break;
335 case MKTAG(0xa9,'a','u','t'): key = "artist"; break;
336 case MKTAG(0xa9,'c','h','p'): key = "chapter"; break;
337 case MKTAG(0xa9,'c','m','t'): key = "comment"; break;
338 case MKTAG(0xa9,'c','o','m'): key = "composer"; break;
339 case MKTAG(0xa9,'c','p','y'): key = "copyright"; break;
340 case MKTAG(0xa9,'d','a','y'): key = "date"; break;
341 case MKTAG(0xa9,'d','i','r'): key = "director"; break;
342 case MKTAG(0xa9,'d','i','s'): key = "disclaimer"; break;
343 case MKTAG(0xa9,'e','d','1'): key = "edit_date"; break;
344 case MKTAG(0xa9,'e','n','c'): key = "encoder"; break;
345 case MKTAG(0xa9,'f','m','t'): key = "original_format"; break;
346 case MKTAG(0xa9,'g','e','n'): key = "genre"; break;
347 case MKTAG(0xa9,'g','r','p'): key = "grouping"; break;
348 case MKTAG(0xa9,'h','s','t'): key = "host_computer"; break;
349 case MKTAG(0xa9,'i','n','f'): key = "comment"; break;
350 case MKTAG(0xa9,'l','y','r'): key = "lyrics"; break;
351 case MKTAG(0xa9,'m','a','k'): key = "make"; break;
352 case MKTAG(0xa9,'m','o','d'): key = "model"; break;
353 case MKTAG(0xa9,'n','a','m'): key = "title"; break;
354 case MKTAG(0xa9,'o','p','e'): key = "original_artist"; break;
355 case MKTAG(0xa9,'p','r','d'): key = "producer"; break;
356 case MKTAG(0xa9,'p','r','f'): key = "performers"; break;
357 case MKTAG(0xa9,'r','e','q'): key = "playback_requirements"; break;
358 case MKTAG(0xa9,'s','r','c'): key = "original_source"; break;
359 case MKTAG(0xa9,'s','t','3'): key = "subtitle"; break;
360 case MKTAG(0xa9,'s','w','r'): key = "encoder"; break;
361 case MKTAG(0xa9,'t','o','o'): key = "encoder"; break;
362 case MKTAG(0xa9,'t','r','k'): key = "track"; break;
363 case MKTAG(0xa9,'u','r','l'): key = "URL"; break;
364 case MKTAG(0xa9,'w','r','n'): key = "warning"; break;
365 case MKTAG(0xa9,'w','r','t'): key = "composer"; break;
366 case MKTAG(0xa9,'x','y','z'): key = "location"; break;
369 if (c->itunes_metadata && atom.size > 8) {
370 int data_size = avio_rb32(pb);
371 int tag = avio_rl32(pb);
372 if (tag == MKTAG('d','a','t','a') && data_size <= atom.size) {
373 data_type = avio_rb32(pb); // type
374 avio_rb32(pb); // unknown
375 str_size = data_size - 16;
378 if (atom.type == MKTAG('c', 'o', 'v', 'r')) {
379 int ret = mov_read_covr(c, pb, data_type, str_size);
381 av_log(c->fc, AV_LOG_ERROR, "Error parsing cover art.\n");
384 } else if (!key && c->found_hdlr_mdta && c->meta_keys) {
385 uint32_t index = AV_RB32(&atom.type);
386 if (index < c->meta_keys_count) {
387 key = c->meta_keys[index];
389 av_log(c->fc, AV_LOG_WARNING,
390 "The index of 'data' is out of range: %d >= %d.\n",
391 index, c->meta_keys_count);
395 } else if (atom.size > 4 && key && !c->itunes_metadata && !raw) {
396 str_size = avio_rb16(pb); // string length
397 if (str_size > atom.size) {
399 avio_seek(pb, -2, SEEK_CUR);
400 av_log(c->fc, AV_LOG_WARNING, "UDTA parsing failed retrying raw\n");
403 langcode = avio_rb16(pb);
404 ff_mov_lang_to_iso639(langcode, language);
407 str_size = atom.size;
409 if (c->export_all && !key) {
410 snprintf(tmp_key, 5, "%.4s", (char*)&atom.type);
416 if (atom.size < 0 || str_size >= INT_MAX/2)
417 return AVERROR_INVALIDDATA;
419 // Allocates enough space if data_type is a int32 or float32 number, otherwise
420 // worst-case requirement for output string in case of utf8 coded input
421 num = (data_type >= 21 && data_type <= 23);
422 str_size_alloc = (num ? 512 : (raw ? str_size : str_size * 2)) + 1;
423 str = av_mallocz(str_size_alloc);
425 return AVERROR(ENOMEM);
428 parse(c, pb, str_size, key);
430 if (!raw && (data_type == 3 || (data_type == 0 && (langcode < 0x400 || langcode == 0x7fff)))) { // MAC Encoded
431 mov_read_mac_string(c, pb, str_size, str, str_size_alloc);
432 } else if (data_type == 21) { // BE signed integer, variable size
435 val = (int8_t)avio_r8(pb);
436 else if (str_size == 2)
437 val = (int16_t)avio_rb16(pb);
438 else if (str_size == 3)
439 val = ((int32_t)(avio_rb24(pb)<<8))>>8;
440 else if (str_size == 4)
441 val = (int32_t)avio_rb32(pb);
442 if (snprintf(str, str_size_alloc, "%d", val) >= str_size_alloc) {
443 av_log(c->fc, AV_LOG_ERROR,
444 "Failed to store the number (%d) in string.\n", val);
446 return AVERROR_INVALIDDATA;
448 } else if (data_type == 22) { // BE unsigned integer, variable size
449 unsigned int val = 0;
452 else if (str_size == 2)
454 else if (str_size == 3)
456 else if (str_size == 4)
458 if (snprintf(str, str_size_alloc, "%u", val) >= str_size_alloc) {
459 av_log(c->fc, AV_LOG_ERROR,
460 "Failed to store the number (%u) in string.\n", val);
462 return AVERROR_INVALIDDATA;
464 } else if (data_type == 23 && str_size >= 4) { // BE float32
465 float val = av_int2float(avio_rb32(pb));
466 if (snprintf(str, str_size_alloc, "%f", val) >= str_size_alloc) {
467 av_log(c->fc, AV_LOG_ERROR,
468 "Failed to store the float32 number (%f) in string.\n", val);
470 return AVERROR_INVALIDDATA;
473 int ret = ffio_read_size(pb, str, str_size);
480 c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
481 av_dict_set(&c->fc->metadata, key, str, 0);
482 if (*language && strcmp(language, "und")) {
483 snprintf(key2, sizeof(key2), "%s-%s", key, language);
484 av_dict_set(&c->fc->metadata, key2, str, 0);
486 if (!strcmp(key, "encoder")) {
487 int major, minor, micro;
488 if (sscanf(str, "HandBrake %d.%d.%d", &major, &minor, µ) == 3) {
489 c->handbrake_version = 1000000*major + 1000*minor + micro;
493 av_log(c->fc, AV_LOG_TRACE, "lang \"%3s\" ", language);
494 av_log(c->fc, AV_LOG_TRACE, "tag \"%s\" value \"%s\" atom \"%.4s\" %d %"PRId64"\n",
495 key, str, (char*)&atom.type, str_size_alloc, atom.size);
501 static int mov_read_chpl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
504 int i, nb_chapters, str_len, version;
508 if (c->ignore_chapters)
511 if ((atom.size -= 5) < 0)
514 version = avio_r8(pb);
517 avio_rb32(pb); // ???
518 nb_chapters = avio_r8(pb);
520 for (i = 0; i < nb_chapters; i++) {
524 start = avio_rb64(pb);
525 str_len = avio_r8(pb);
527 if ((atom.size -= 9+str_len) < 0)
530 ret = ffio_read_size(pb, str, str_len);
534 avpriv_new_chapter(c->fc, i, (AVRational){1,10000000}, start, AV_NOPTS_VALUE, str);
539 #define MIN_DATA_ENTRY_BOX_SIZE 12
540 static int mov_read_dref(MOVContext *c, AVIOContext *pb, MOVAtom atom)
543 MOVStreamContext *sc;
546 if (c->fc->nb_streams < 1)
548 st = c->fc->streams[c->fc->nb_streams-1];
551 avio_rb32(pb); // version + flags
552 entries = avio_rb32(pb);
554 entries > (atom.size - 1) / MIN_DATA_ENTRY_BOX_SIZE + 1 ||
555 entries >= UINT_MAX / sizeof(*sc->drefs))
556 return AVERROR_INVALIDDATA;
560 sc->drefs = av_mallocz(entries * sizeof(*sc->drefs));
562 return AVERROR(ENOMEM);
563 sc->drefs_count = entries;
565 for (i = 0; i < entries; i++) {
566 MOVDref *dref = &sc->drefs[i];
567 uint32_t size = avio_rb32(pb);
568 int64_t next = avio_tell(pb) + size - 4;
571 return AVERROR_INVALIDDATA;
573 dref->type = avio_rl32(pb);
574 avio_rb32(pb); // version + flags
575 av_log(c->fc, AV_LOG_TRACE, "type %.4s size %d\n", (char*)&dref->type, size);
577 if (dref->type == MKTAG('a','l','i','s') && size > 150) {
578 /* macintosh alias record */
579 uint16_t volume_len, len;
585 volume_len = avio_r8(pb);
586 volume_len = FFMIN(volume_len, 27);
587 ret = ffio_read_size(pb, dref->volume, 27);
590 dref->volume[volume_len] = 0;
591 av_log(c->fc, AV_LOG_DEBUG, "volume %s, len %d\n", dref->volume, volume_len);
596 len = FFMIN(len, 63);
597 ret = ffio_read_size(pb, dref->filename, 63);
600 dref->filename[len] = 0;
601 av_log(c->fc, AV_LOG_DEBUG, "filename %s, len %d\n", dref->filename, len);
605 /* read next level up_from_alias/down_to_target */
606 dref->nlvl_from = avio_rb16(pb);
607 dref->nlvl_to = avio_rb16(pb);
608 av_log(c->fc, AV_LOG_DEBUG, "nlvl from %d, nlvl to %d\n",
609 dref->nlvl_from, dref->nlvl_to);
613 for (type = 0; type != -1 && avio_tell(pb) < next; ) {
616 type = avio_rb16(pb);
618 av_log(c->fc, AV_LOG_DEBUG, "type %d, len %d\n", type, len);
621 if (type == 2) { // absolute path
623 dref->path = av_mallocz(len+1);
625 return AVERROR(ENOMEM);
627 ret = ffio_read_size(pb, dref->path, len);
629 av_freep(&dref->path);
632 if (len > volume_len && !strncmp(dref->path, dref->volume, volume_len)) {
634 memmove(dref->path, dref->path+volume_len, len);
637 // trim string of any ending zeros
638 for (j = len - 1; j >= 0; j--) {
639 if (dref->path[j] == 0)
644 for (j = 0; j < len; j++)
645 if (dref->path[j] == ':' || dref->path[j] == 0)
647 av_log(c->fc, AV_LOG_DEBUG, "path %s\n", dref->path);
648 } else if (type == 0) { // directory name
650 dref->dir = av_malloc(len+1);
652 return AVERROR(ENOMEM);
654 ret = ffio_read_size(pb, dref->dir, len);
656 av_freep(&dref->dir);
660 for (j = 0; j < len; j++)
661 if (dref->dir[j] == ':')
663 av_log(c->fc, AV_LOG_DEBUG, "dir %s\n", dref->dir);
668 av_log(c->fc, AV_LOG_DEBUG, "Unknown dref type 0x08%x size %d\n",
673 avio_seek(pb, next, SEEK_SET);
678 static int mov_read_hdlr(MOVContext *c, AVIOContext *pb, MOVAtom atom)
682 uint32_t av_unused ctype;
687 avio_r8(pb); /* version */
688 avio_rb24(pb); /* flags */
691 ctype = avio_rl32(pb);
692 type = avio_rl32(pb); /* component subtype */
694 av_log(c->fc, AV_LOG_TRACE, "ctype= %.4s (0x%08x)\n", (char*)&ctype, ctype);
695 av_log(c->fc, AV_LOG_TRACE, "stype= %.4s\n", (char*)&type);
697 if (c->trak_index < 0) { // meta not inside a trak
698 if (type == MKTAG('m','d','t','a')) {
699 c->found_hdlr_mdta = 1;
704 st = c->fc->streams[c->fc->nb_streams-1];
706 if (type == MKTAG('v','i','d','e'))
707 st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
708 else if (type == MKTAG('s','o','u','n'))
709 st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
710 else if (type == MKTAG('m','1','a',' '))
711 st->codecpar->codec_id = AV_CODEC_ID_MP2;
712 else if ((type == MKTAG('s','u','b','p')) || (type == MKTAG('c','l','c','p')))
713 st->codecpar->codec_type = AVMEDIA_TYPE_SUBTITLE;
715 avio_rb32(pb); /* component manufacture */
716 avio_rb32(pb); /* component flags */
717 avio_rb32(pb); /* component flags mask */
719 title_size = atom.size - 24;
720 if (title_size > 0) {
721 title_str = av_malloc(title_size + 1); /* Add null terminator */
723 return AVERROR(ENOMEM);
725 ret = ffio_read_size(pb, title_str, title_size);
727 av_freep(&title_str);
730 title_str[title_size] = 0;
732 int off = (!c->isom && title_str[0] == title_size - 1);
733 av_dict_set(&st->metadata, "handler_name", title_str + off, 0);
735 av_freep(&title_str);
741 int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb)
746 if (fc->nb_streams < 1)
748 st = fc->streams[fc->nb_streams-1];
750 avio_rb32(pb); /* version + flags */
751 ff_mp4_read_descr(fc, pb, &tag);
752 if (tag == MP4ESDescrTag) {
753 ff_mp4_parse_es_descr(pb, NULL);
755 avio_rb16(pb); /* ID */
757 ff_mp4_read_descr(fc, pb, &tag);
758 if (tag == MP4DecConfigDescrTag)
759 ff_mp4_read_dec_config_descr(fc, st, pb);
763 static int mov_read_esds(MOVContext *c, AVIOContext *pb, MOVAtom atom)
765 return ff_mov_read_esds(c->fc, pb);
768 static int mov_read_dac3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
771 enum AVAudioServiceType *ast;
772 int ac3info, acmod, lfeon, bsmod;
774 if (c->fc->nb_streams < 1)
776 st = c->fc->streams[c->fc->nb_streams-1];
778 ast = (enum AVAudioServiceType*)av_stream_new_side_data(st, AV_PKT_DATA_AUDIO_SERVICE_TYPE,
781 return AVERROR(ENOMEM);
783 ac3info = avio_rb24(pb);
784 bsmod = (ac3info >> 14) & 0x7;
785 acmod = (ac3info >> 11) & 0x7;
786 lfeon = (ac3info >> 10) & 0x1;
787 st->codecpar->channels = ((int[]){2,1,2,3,3,4,4,5})[acmod] + lfeon;
788 st->codecpar->channel_layout = avpriv_ac3_channel_layout_tab[acmod];
790 st->codecpar->channel_layout |= AV_CH_LOW_FREQUENCY;
792 if (st->codecpar->channels > 1 && bsmod == 0x7)
793 *ast = AV_AUDIO_SERVICE_TYPE_KARAOKE;
795 #if FF_API_LAVF_AVCTX
796 FF_DISABLE_DEPRECATION_WARNINGS
797 st->codec->audio_service_type = *ast;
798 FF_ENABLE_DEPRECATION_WARNINGS
804 static int mov_read_dec3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
807 enum AVAudioServiceType *ast;
808 int eac3info, acmod, lfeon, bsmod;
810 if (c->fc->nb_streams < 1)
812 st = c->fc->streams[c->fc->nb_streams-1];
814 ast = (enum AVAudioServiceType*)av_stream_new_side_data(st, AV_PKT_DATA_AUDIO_SERVICE_TYPE,
817 return AVERROR(ENOMEM);
819 /* No need to parse fields for additional independent substreams and its
820 * associated dependent substreams since libavcodec's E-AC-3 decoder
821 * does not support them yet. */
822 avio_rb16(pb); /* data_rate and num_ind_sub */
823 eac3info = avio_rb24(pb);
824 bsmod = (eac3info >> 12) & 0x1f;
825 acmod = (eac3info >> 9) & 0x7;
826 lfeon = (eac3info >> 8) & 0x1;
827 st->codecpar->channel_layout = avpriv_ac3_channel_layout_tab[acmod];
829 st->codecpar->channel_layout |= AV_CH_LOW_FREQUENCY;
830 st->codecpar->channels = av_get_channel_layout_nb_channels(st->codecpar->channel_layout);
832 if (st->codecpar->channels > 1 && bsmod == 0x7)
833 *ast = AV_AUDIO_SERVICE_TYPE_KARAOKE;
835 #if FF_API_LAVF_AVCTX
836 FF_DISABLE_DEPRECATION_WARNINGS
837 st->codec->audio_service_type = *ast;
838 FF_ENABLE_DEPRECATION_WARNINGS
844 static int mov_read_ddts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
846 const uint32_t ddts_size = 20;
849 uint32_t frame_duration_code = 0;
850 uint32_t channel_layout_code = 0;
853 buf = av_malloc(ddts_size + FF_INPUT_BUFFER_PADDING_SIZE);
855 return AVERROR(ENOMEM);
857 if (avio_read(pb, buf, ddts_size) < ddts_size) {
859 return AVERROR_INVALIDDATA;
862 init_get_bits(&gb, buf, 8*ddts_size);
864 if (c->fc->nb_streams < 1) {
867 st = c->fc->streams[c->fc->nb_streams-1];
869 st->codecpar->sample_rate = get_bits_long(&gb, 32);
870 skip_bits_long(&gb, 32); /* max bitrate */
871 st->codecpar->bit_rate = get_bits_long(&gb, 32);
872 st->codecpar->bits_per_coded_sample = get_bits(&gb, 8);
873 frame_duration_code = get_bits(&gb, 2);
874 skip_bits(&gb, 30); /* various fields */
875 channel_layout_code = get_bits(&gb, 16);
877 st->codecpar->frame_size =
878 (frame_duration_code == 0) ? 512 :
879 (frame_duration_code == 1) ? 1024 :
880 (frame_duration_code == 2) ? 2048 :
881 (frame_duration_code == 3) ? 4096 : 0;
883 if (channel_layout_code > 0xff) {
884 av_log(c->fc, AV_LOG_WARNING, "Unsupported DTS audio channel layout");
886 st->codecpar->channel_layout =
887 ((channel_layout_code & 0x1) ? AV_CH_FRONT_CENTER : 0) |
888 ((channel_layout_code & 0x2) ? AV_CH_FRONT_LEFT : 0) |
889 ((channel_layout_code & 0x2) ? AV_CH_FRONT_RIGHT : 0) |
890 ((channel_layout_code & 0x4) ? AV_CH_SIDE_LEFT : 0) |
891 ((channel_layout_code & 0x4) ? AV_CH_SIDE_RIGHT : 0) |
892 ((channel_layout_code & 0x8) ? AV_CH_LOW_FREQUENCY : 0);
894 st->codecpar->channels = av_get_channel_layout_nb_channels(st->codecpar->channel_layout);
899 static int mov_read_chan(MOVContext *c, AVIOContext *pb, MOVAtom atom)
903 if (c->fc->nb_streams < 1)
905 st = c->fc->streams[c->fc->nb_streams-1];
910 /* skip version and flags */
913 ff_mov_read_chan(c->fc, pb, st, atom.size - 4);
918 static int mov_read_wfex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
923 if (c->fc->nb_streams < 1)
925 st = c->fc->streams[c->fc->nb_streams-1];
927 if ((ret = ff_get_wav_header(c->fc, pb, st->codecpar, atom.size, 0)) < 0)
928 av_log(c->fc, AV_LOG_WARNING, "get_wav_header failed\n");
933 static int mov_read_pasp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
935 const int num = avio_rb32(pb);
936 const int den = avio_rb32(pb);
939 if (c->fc->nb_streams < 1)
941 st = c->fc->streams[c->fc->nb_streams-1];
943 if ((st->sample_aspect_ratio.den != 1 || st->sample_aspect_ratio.num) && // default
944 (den != st->sample_aspect_ratio.den || num != st->sample_aspect_ratio.num)) {
945 av_log(c->fc, AV_LOG_WARNING,
946 "sample aspect ratio already set to %d:%d, ignoring 'pasp' atom (%d:%d)\n",
947 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
949 } else if (den != 0) {
950 av_reduce(&st->sample_aspect_ratio.num, &st->sample_aspect_ratio.den,
956 /* this atom contains actual media data */
957 static int mov_read_mdat(MOVContext *c, AVIOContext *pb, MOVAtom atom)
959 if (atom.size == 0) /* wrong one (MP4) */
962 return 0; /* now go for moov */
965 #define DRM_BLOB_SIZE 56
967 static int mov_read_adrm(MOVContext *c, AVIOContext *pb, MOVAtom atom)
969 uint8_t intermediate_key[20];
970 uint8_t intermediate_iv[20];
973 uint8_t file_checksum[20];
974 uint8_t calculated_checksum[20];
978 uint8_t *activation_bytes = c->activation_bytes;
979 uint8_t *fixed_key = c->audible_fixed_key;
983 sha = av_sha_alloc();
985 return AVERROR(ENOMEM);
986 c->aes_decrypt = av_aes_alloc();
987 if (!c->aes_decrypt) {
988 ret = AVERROR(ENOMEM);
992 /* drm blob processing */
993 avio_read(pb, output, 8); // go to offset 8, absolute position 0x251
994 avio_read(pb, input, DRM_BLOB_SIZE);
995 avio_read(pb, output, 4); // go to offset 4, absolute position 0x28d
996 avio_read(pb, file_checksum, 20);
998 av_log(c->fc, AV_LOG_INFO, "[aax] file checksum == "); // required by external tools
999 for (i = 0; i < 20; i++)
1000 av_log(c->fc, AV_LOG_INFO, "%02x", file_checksum[i]);
1001 av_log(c->fc, AV_LOG_INFO, "\n");
1003 /* verify activation data */
1004 if (!activation_bytes) {
1005 av_log(c->fc, AV_LOG_WARNING, "[aax] activation_bytes option is missing!\n");
1006 ret = 0; /* allow ffprobe to continue working on .aax files */
1009 if (c->activation_bytes_size != 4) {
1010 av_log(c->fc, AV_LOG_FATAL, "[aax] activation_bytes value needs to be 4 bytes!\n");
1011 ret = AVERROR(EINVAL);
1015 /* verify fixed key */
1016 if (c->audible_fixed_key_size != 16) {
1017 av_log(c->fc, AV_LOG_FATAL, "[aax] audible_fixed_key value needs to be 16 bytes!\n");
1018 ret = AVERROR(EINVAL);
1022 /* AAX (and AAX+) key derivation */
1023 av_sha_init(sha, 160);
1024 av_sha_update(sha, fixed_key, 16);
1025 av_sha_update(sha, activation_bytes, 4);
1026 av_sha_final(sha, intermediate_key);
1027 av_sha_init(sha, 160);
1028 av_sha_update(sha, fixed_key, 16);
1029 av_sha_update(sha, intermediate_key, 20);
1030 av_sha_update(sha, activation_bytes, 4);
1031 av_sha_final(sha, intermediate_iv);
1032 av_sha_init(sha, 160);
1033 av_sha_update(sha, intermediate_key, 16);
1034 av_sha_update(sha, intermediate_iv, 16);
1035 av_sha_final(sha, calculated_checksum);
1036 if (memcmp(calculated_checksum, file_checksum, 20)) { // critical error
1037 av_log(c->fc, AV_LOG_ERROR, "[aax] mismatch in checksums!\n");
1038 ret = AVERROR_INVALIDDATA;
1041 av_aes_init(c->aes_decrypt, intermediate_key, 128, 1);
1042 av_aes_crypt(c->aes_decrypt, output, input, DRM_BLOB_SIZE >> 4, intermediate_iv, 1);
1043 for (i = 0; i < 4; i++) {
1044 // file data (in output) is stored in big-endian mode
1045 if (activation_bytes[i] != output[3 - i]) { // critical error
1046 av_log(c->fc, AV_LOG_ERROR, "[aax] error in drm blob decryption!\n");
1047 ret = AVERROR_INVALIDDATA;
1051 memcpy(c->file_key, output + 8, 16);
1052 memcpy(input, output + 26, 16);
1053 av_sha_init(sha, 160);
1054 av_sha_update(sha, input, 16);
1055 av_sha_update(sha, c->file_key, 16);
1056 av_sha_update(sha, fixed_key, 16);
1057 av_sha_final(sha, c->file_iv);
1065 // Audible AAX (and AAX+) bytestream decryption
1066 static int aax_filter(uint8_t *input, int size, MOVContext *c)
1069 unsigned char iv[16];
1071 memcpy(iv, c->file_iv, 16); // iv is overwritten
1072 blocks = size >> 4; // trailing bytes are not encrypted!
1073 av_aes_init(c->aes_decrypt, c->file_key, 128, 1);
1074 av_aes_crypt(c->aes_decrypt, input, input, blocks, iv, 1);
1079 /* read major brand, minor version and compatible brands and store them as metadata */
1080 static int mov_read_ftyp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1083 int comp_brand_size;
1084 char* comp_brands_str;
1085 uint8_t type[5] = {0};
1086 int ret = ffio_read_size(pb, type, 4);
1090 if (strcmp(type, "qt "))
1092 av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
1093 av_dict_set(&c->fc->metadata, "major_brand", type, 0);
1094 minor_ver = avio_rb32(pb); /* minor version */
1095 av_dict_set_int(&c->fc->metadata, "minor_version", minor_ver, 0);
1097 comp_brand_size = atom.size - 8;
1098 if (comp_brand_size < 0)
1099 return AVERROR_INVALIDDATA;
1100 comp_brands_str = av_malloc(comp_brand_size + 1); /* Add null terminator */
1101 if (!comp_brands_str)
1102 return AVERROR(ENOMEM);
1104 ret = ffio_read_size(pb, comp_brands_str, comp_brand_size);
1106 av_freep(&comp_brands_str);
1109 comp_brands_str[comp_brand_size] = 0;
1110 av_dict_set(&c->fc->metadata, "compatible_brands", comp_brands_str, 0);
1111 av_freep(&comp_brands_str);
1116 /* this atom should contain all header atoms */
1117 static int mov_read_moov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1121 if (c->found_moov) {
1122 av_log(c->fc, AV_LOG_WARNING, "Found duplicated MOOV Atom. Skipped it\n");
1123 avio_skip(pb, atom.size);
1127 if ((ret = mov_read_default(c, pb, atom)) < 0)
1129 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
1130 /* so we don't parse the whole file if over a network */
1132 return 0; /* now go for mdat */
1135 static int mov_read_moof(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1137 if (!c->has_looked_for_mfra && c->use_mfra_for > 0) {
1138 c->has_looked_for_mfra = 1;
1141 av_log(c->fc, AV_LOG_VERBOSE, "stream has moof boxes, will look "
1143 if ((ret = mov_read_mfra(c, pb)) < 0) {
1144 av_log(c->fc, AV_LOG_VERBOSE, "found a moof box but failed to "
1145 "read the mfra (may be a live ismv)\n");
1148 av_log(c->fc, AV_LOG_VERBOSE, "found a moof box but stream is not "
1149 "seekable, can not look for mfra\n");
1152 c->fragment.moof_offset = c->fragment.implicit_offset = avio_tell(pb) - 8;
1153 av_log(c->fc, AV_LOG_TRACE, "moof offset %"PRIx64"\n", c->fragment.moof_offset);
1154 return mov_read_default(c, pb, atom);
1157 static void mov_metadata_creation_time(AVDictionary **metadata, int64_t time)
1160 if(time >= 2082844800)
1161 time -= 2082844800; /* seconds between 1904-01-01 and Epoch */
1162 avpriv_dict_set_timestamp(metadata, "creation_time", time * 1000000);
1166 static int mov_read_mdhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1169 MOVStreamContext *sc;
1171 char language[4] = {0};
1173 int64_t creation_time;
1175 if (c->fc->nb_streams < 1)
1177 st = c->fc->streams[c->fc->nb_streams-1];
1180 if (sc->time_scale) {
1181 av_log(c->fc, AV_LOG_ERROR, "Multiple mdhd?\n");
1182 return AVERROR_INVALIDDATA;
1185 version = avio_r8(pb);
1187 avpriv_request_sample(c->fc, "Version %d", version);
1188 return AVERROR_PATCHWELCOME;
1190 avio_rb24(pb); /* flags */
1192 creation_time = avio_rb64(pb);
1195 creation_time = avio_rb32(pb);
1196 avio_rb32(pb); /* modification time */
1198 mov_metadata_creation_time(&st->metadata, creation_time);
1200 sc->time_scale = avio_rb32(pb);
1201 st->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
1203 lang = avio_rb16(pb); /* language */
1204 if (ff_mov_lang_to_iso639(lang, language))
1205 av_dict_set(&st->metadata, "language", language, 0);
1206 avio_rb16(pb); /* quality */
1211 static int mov_read_mvhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1213 int64_t creation_time;
1214 int version = avio_r8(pb); /* version */
1215 avio_rb24(pb); /* flags */
1218 creation_time = avio_rb64(pb);
1221 creation_time = avio_rb32(pb);
1222 avio_rb32(pb); /* modification time */
1224 mov_metadata_creation_time(&c->fc->metadata, creation_time);
1225 c->time_scale = avio_rb32(pb); /* time scale */
1227 av_log(c->fc, AV_LOG_TRACE, "time scale = %i\n", c->time_scale);
1229 c->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
1230 // set the AVCodecContext duration because the duration of individual tracks
1231 // may be inaccurate
1232 if (c->time_scale > 0 && !c->trex_data)
1233 c->fc->duration = av_rescale(c->duration, AV_TIME_BASE, c->time_scale);
1234 avio_rb32(pb); /* preferred scale */
1236 avio_rb16(pb); /* preferred volume */
1238 avio_skip(pb, 10); /* reserved */
1240 avio_skip(pb, 36); /* display matrix */
1242 avio_rb32(pb); /* preview time */
1243 avio_rb32(pb); /* preview duration */
1244 avio_rb32(pb); /* poster time */
1245 avio_rb32(pb); /* selection time */
1246 avio_rb32(pb); /* selection duration */
1247 avio_rb32(pb); /* current time */
1248 avio_rb32(pb); /* next track ID */
1253 static int mov_read_enda(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1258 if (c->fc->nb_streams < 1)
1260 st = c->fc->streams[c->fc->nb_streams-1];
1262 little_endian = avio_rb16(pb) & 0xFF;
1263 av_log(c->fc, AV_LOG_TRACE, "enda %d\n", little_endian);
1264 if (little_endian == 1) {
1265 switch (st->codecpar->codec_id) {
1266 case AV_CODEC_ID_PCM_S24BE:
1267 st->codecpar->codec_id = AV_CODEC_ID_PCM_S24LE;
1269 case AV_CODEC_ID_PCM_S32BE:
1270 st->codecpar->codec_id = AV_CODEC_ID_PCM_S32LE;
1272 case AV_CODEC_ID_PCM_F32BE:
1273 st->codecpar->codec_id = AV_CODEC_ID_PCM_F32LE;
1275 case AV_CODEC_ID_PCM_F64BE:
1276 st->codecpar->codec_id = AV_CODEC_ID_PCM_F64LE;
1285 static int mov_read_colr(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1288 char color_parameter_type[5] = { 0 };
1289 uint16_t color_primaries, color_trc, color_matrix;
1292 if (c->fc->nb_streams < 1)
1294 st = c->fc->streams[c->fc->nb_streams - 1];
1296 ret = ffio_read_size(pb, color_parameter_type, 4);
1299 if (strncmp(color_parameter_type, "nclx", 4) &&
1300 strncmp(color_parameter_type, "nclc", 4)) {
1301 av_log(c->fc, AV_LOG_WARNING, "unsupported color_parameter_type %s\n",
1302 color_parameter_type);
1306 color_primaries = avio_rb16(pb);
1307 color_trc = avio_rb16(pb);
1308 color_matrix = avio_rb16(pb);
1310 av_log(c->fc, AV_LOG_TRACE,
1311 "%s: pri %d trc %d matrix %d",
1312 color_parameter_type, color_primaries, color_trc, color_matrix);
1314 if (!strncmp(color_parameter_type, "nclx", 4)) {
1315 uint8_t color_range = avio_r8(pb) >> 7;
1316 av_log(c->fc, AV_LOG_TRACE, " full %"PRIu8"", color_range);
1318 st->codecpar->color_range = AVCOL_RANGE_JPEG;
1320 st->codecpar->color_range = AVCOL_RANGE_MPEG;
1322 if (color_primaries >= AVCOL_PRI_NB)
1323 color_primaries = AVCOL_PRI_UNSPECIFIED;
1324 if (color_trc >= AVCOL_TRC_NB)
1325 color_trc = AVCOL_TRC_UNSPECIFIED;
1326 if (color_matrix >= AVCOL_SPC_NB)
1327 color_matrix = AVCOL_SPC_UNSPECIFIED;
1328 st->codecpar->color_primaries = color_primaries;
1329 st->codecpar->color_trc = color_trc;
1330 st->codecpar->color_space = color_matrix;
1331 av_log(c->fc, AV_LOG_TRACE, "\n");
1336 static int mov_read_fiel(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1339 unsigned mov_field_order;
1340 enum AVFieldOrder decoded_field_order = AV_FIELD_UNKNOWN;
1342 if (c->fc->nb_streams < 1) // will happen with jp2 files
1344 st = c->fc->streams[c->fc->nb_streams-1];
1346 return AVERROR_INVALIDDATA;
1347 mov_field_order = avio_rb16(pb);
1348 if ((mov_field_order & 0xFF00) == 0x0100)
1349 decoded_field_order = AV_FIELD_PROGRESSIVE;
1350 else if ((mov_field_order & 0xFF00) == 0x0200) {
1351 switch (mov_field_order & 0xFF) {
1352 case 0x01: decoded_field_order = AV_FIELD_TT;
1354 case 0x06: decoded_field_order = AV_FIELD_BB;
1356 case 0x09: decoded_field_order = AV_FIELD_TB;
1358 case 0x0E: decoded_field_order = AV_FIELD_BT;
1362 if (decoded_field_order == AV_FIELD_UNKNOWN && mov_field_order) {
1363 av_log(NULL, AV_LOG_ERROR, "Unknown MOV field order 0x%04x\n", mov_field_order);
1365 st->codecpar->field_order = decoded_field_order;
1370 static int mov_realloc_extradata(AVCodecParameters *par, MOVAtom atom)
1373 uint64_t size = (uint64_t)par->extradata_size + atom.size + 8 + AV_INPUT_BUFFER_PADDING_SIZE;
1374 if (size > INT_MAX || (uint64_t)atom.size > INT_MAX)
1375 return AVERROR_INVALIDDATA;
1376 if ((err = av_reallocp(&par->extradata, size)) < 0) {
1377 par->extradata_size = 0;
1380 par->extradata_size = size - AV_INPUT_BUFFER_PADDING_SIZE;
1384 /* Read a whole atom into the extradata return the size of the atom read, possibly truncated if != atom.size */
1385 static int64_t mov_read_atom_into_extradata(MOVContext *c, AVIOContext *pb, MOVAtom atom,
1386 AVCodecParameters *par, uint8_t *buf)
1388 int64_t result = atom.size;
1391 AV_WB32(buf , atom.size + 8);
1392 AV_WL32(buf + 4, atom.type);
1393 err = ffio_read_size(pb, buf + 8, atom.size);
1395 par->extradata_size -= atom.size;
1397 } else if (err < atom.size) {
1398 av_log(c->fc, AV_LOG_WARNING, "truncated extradata\n");
1399 par->extradata_size -= atom.size - err;
1402 memset(buf + 8 + err, 0, AV_INPUT_BUFFER_PADDING_SIZE);
1406 /* FIXME modify QDM2/SVQ3/H.264 decoders to take full atom as extradata */
1407 static int mov_read_extradata(MOVContext *c, AVIOContext *pb, MOVAtom atom,
1408 enum AVCodecID codec_id)
1411 uint64_t original_size;
1414 if (c->fc->nb_streams < 1) // will happen with jp2 files
1416 st = c->fc->streams[c->fc->nb_streams-1];
1418 if (st->codecpar->codec_id != codec_id)
1419 return 0; /* unexpected codec_id - don't mess with extradata */
1421 original_size = st->codecpar->extradata_size;
1422 err = mov_realloc_extradata(st->codecpar, atom);
1426 err = mov_read_atom_into_extradata(c, pb, atom, st->codecpar, st->codecpar->extradata + original_size);
1429 return 0; // Note: this is the original behavior to ignore truncation.
1432 /* wrapper functions for reading ALAC/AVS/MJPEG/MJPEG2000 extradata atoms only for those codecs */
1433 static int mov_read_alac(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1435 return mov_read_extradata(c, pb, atom, AV_CODEC_ID_ALAC);
1438 static int mov_read_avss(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1440 return mov_read_extradata(c, pb, atom, AV_CODEC_ID_AVS);
1443 static int mov_read_jp2h(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1445 return mov_read_extradata(c, pb, atom, AV_CODEC_ID_JPEG2000);
1448 static int mov_read_dpxe(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1450 return mov_read_extradata(c, pb, atom, AV_CODEC_ID_R10K);
1453 static int mov_read_avid(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1455 int ret = mov_read_extradata(c, pb, atom, AV_CODEC_ID_AVUI);
1457 ret = mov_read_extradata(c, pb, atom, AV_CODEC_ID_DNXHD);
1461 static int mov_read_targa_y216(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1463 int ret = mov_read_extradata(c, pb, atom, AV_CODEC_ID_TARGA_Y216);
1465 if (!ret && c->fc->nb_streams >= 1) {
1466 AVCodecParameters *par = c->fc->streams[c->fc->nb_streams-1]->codecpar;
1467 if (par->extradata_size >= 40) {
1468 par->height = AV_RB16(&par->extradata[36]);
1469 par->width = AV_RB16(&par->extradata[38]);
1475 static int mov_read_ares(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1477 if (c->fc->nb_streams >= 1) {
1478 AVCodecParameters *par = c->fc->streams[c->fc->nb_streams-1]->codecpar;
1479 if (par->codec_tag == MKTAG('A', 'V', 'i', 'n') &&
1480 par->codec_id == AV_CODEC_ID_H264 &&
1484 cid = avio_rb16(pb);
1485 /* For AVID AVCI50, force width of 1440 to be able to select the correct SPS and PPS */
1486 if (cid == 0xd4d || cid == 0xd4e)
1489 } else if (par->codec_tag == MKTAG('A', 'V', 'd', '1') &&
1493 num = avio_rb32(pb);
1494 den = avio_rb32(pb);
1495 if (num <= 0 || den <= 0)
1497 switch (avio_rb32(pb)) {
1499 if (den >= INT_MAX / 2)
1503 c->fc->streams[c->fc->nb_streams-1]->display_aspect_ratio.num = num;
1504 c->fc->streams[c->fc->nb_streams-1]->display_aspect_ratio.den = den;
1511 return mov_read_avid(c, pb, atom);
1514 static int mov_read_aclr(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1518 uint64_t original_size;
1519 if (c->fc->nb_streams >= 1) {
1520 AVCodecParameters *par = c->fc->streams[c->fc->nb_streams-1]->codecpar;
1521 if (par->codec_id == AV_CODEC_ID_H264)
1523 if (atom.size == 16) {
1524 original_size = par->extradata_size;
1525 ret = mov_realloc_extradata(par, atom);
1527 length = mov_read_atom_into_extradata(c, pb, atom, par, par->extradata + original_size);
1528 if (length == atom.size) {
1529 const uint8_t range_value = par->extradata[original_size + 19];
1530 switch (range_value) {
1532 par->color_range = AVCOL_RANGE_MPEG;
1535 par->color_range = AVCOL_RANGE_JPEG;
1538 av_log(c, AV_LOG_WARNING, "ignored unknown aclr value (%d)\n", range_value);
1541 ff_dlog(c, "color_range: %d\n", par->color_range);
1543 /* For some reason the whole atom was not added to the extradata */
1544 av_log(c, AV_LOG_ERROR, "aclr not decoded - incomplete atom\n");
1547 av_log(c, AV_LOG_ERROR, "aclr not decoded - unable to add atom to extradata\n");
1550 av_log(c, AV_LOG_WARNING, "aclr not decoded - unexpected size %"PRId64"\n", atom.size);
1557 static int mov_read_svq3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1559 return mov_read_extradata(c, pb, atom, AV_CODEC_ID_SVQ3);
1562 static int mov_read_wave(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1567 if (c->fc->nb_streams < 1)
1569 st = c->fc->streams[c->fc->nb_streams-1];
1571 if ((uint64_t)atom.size > (1<<30))
1572 return AVERROR_INVALIDDATA;
1574 if (st->codecpar->codec_id == AV_CODEC_ID_QDM2 ||
1575 st->codecpar->codec_id == AV_CODEC_ID_QDMC ||
1576 st->codecpar->codec_id == AV_CODEC_ID_SPEEX) {
1577 // pass all frma atom to codec, needed at least for QDMC and QDM2
1578 av_freep(&st->codecpar->extradata);
1579 ret = ff_get_extradata(c->fc, st->codecpar, pb, atom.size);
1582 } else if (atom.size > 8) { /* to read frma, esds atoms */
1583 if (st->codecpar->codec_id == AV_CODEC_ID_ALAC && atom.size >= 24) {
1585 ret = ffio_ensure_seekback(pb, 8);
1588 buffer = avio_rb64(pb);
1590 if ( (buffer & 0xFFFFFFFF) == MKBETAG('f','r','m','a')
1591 && buffer >> 32 <= atom.size
1592 && buffer >> 32 >= 8) {
1595 } else if (!st->codecpar->extradata_size) {
1596 #define ALAC_EXTRADATA_SIZE 36
1597 st->codecpar->extradata = av_mallocz(ALAC_EXTRADATA_SIZE + AV_INPUT_BUFFER_PADDING_SIZE);
1598 if (!st->codecpar->extradata)
1599 return AVERROR(ENOMEM);
1600 st->codecpar->extradata_size = ALAC_EXTRADATA_SIZE;
1601 AV_WB32(st->codecpar->extradata , ALAC_EXTRADATA_SIZE);
1602 AV_WB32(st->codecpar->extradata + 4, MKTAG('a','l','a','c'));
1603 AV_WB64(st->codecpar->extradata + 12, buffer);
1604 avio_read(pb, st->codecpar->extradata + 20, 16);
1605 avio_skip(pb, atom.size - 24);
1609 if ((ret = mov_read_default(c, pb, atom)) < 0)
1612 avio_skip(pb, atom.size);
1617 * This function reads atom content and puts data in extradata without tag
1618 * nor size unlike mov_read_extradata.
1620 static int mov_read_glbl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1625 if (c->fc->nb_streams < 1)
1627 st = c->fc->streams[c->fc->nb_streams-1];
1629 if ((uint64_t)atom.size > (1<<30))
1630 return AVERROR_INVALIDDATA;
1632 if (atom.size >= 10) {
1633 // Broken files created by legacy versions of libavformat will
1634 // wrap a whole fiel atom inside of a glbl atom.
1635 unsigned size = avio_rb32(pb);
1636 unsigned type = avio_rl32(pb);
1637 avio_seek(pb, -8, SEEK_CUR);
1638 if (type == MKTAG('f','i','e','l') && size == atom.size)
1639 return mov_read_default(c, pb, atom);
1641 if (st->codecpar->extradata_size > 1 && st->codecpar->extradata) {
1642 av_log(c, AV_LOG_WARNING, "ignoring multiple glbl\n");
1645 av_freep(&st->codecpar->extradata);
1646 ret = ff_get_extradata(c->fc, st->codecpar, pb, atom.size);
1653 static int mov_read_dvc1(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1656 uint8_t profile_level;
1659 if (c->fc->nb_streams < 1)
1661 st = c->fc->streams[c->fc->nb_streams-1];
1663 if (atom.size >= (1<<28) || atom.size < 7)
1664 return AVERROR_INVALIDDATA;
1666 profile_level = avio_r8(pb);
1667 if ((profile_level & 0xf0) != 0xc0)
1670 avio_seek(pb, 6, SEEK_CUR);
1671 av_freep(&st->codecpar->extradata);
1672 ret = ff_get_extradata(c->fc, st->codecpar, pb, atom.size - 7);
1680 * An strf atom is a BITMAPINFOHEADER struct. This struct is 40 bytes itself,
1681 * but can have extradata appended at the end after the 40 bytes belonging
1684 static int mov_read_strf(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1689 if (c->fc->nb_streams < 1)
1691 if (atom.size <= 40)
1693 st = c->fc->streams[c->fc->nb_streams-1];
1695 if ((uint64_t)atom.size > (1<<30))
1696 return AVERROR_INVALIDDATA;
1699 av_freep(&st->codecpar->extradata);
1700 ret = ff_get_extradata(c->fc, st->codecpar, pb, atom.size - 40);
1707 static int mov_read_stco(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1710 MOVStreamContext *sc;
1711 unsigned int i, entries;
1713 if (c->fc->nb_streams < 1)
1715 st = c->fc->streams[c->fc->nb_streams-1];
1718 avio_r8(pb); /* version */
1719 avio_rb24(pb); /* flags */
1721 entries = avio_rb32(pb);
1726 if (sc->chunk_offsets)
1727 av_log(c->fc, AV_LOG_WARNING, "Duplicated STCO atom\n");
1728 av_free(sc->chunk_offsets);
1729 sc->chunk_count = 0;
1730 sc->chunk_offsets = av_malloc_array(entries, sizeof(*sc->chunk_offsets));
1731 if (!sc->chunk_offsets)
1732 return AVERROR(ENOMEM);
1733 sc->chunk_count = entries;
1735 if (atom.type == MKTAG('s','t','c','o'))
1736 for (i = 0; i < entries && !pb->eof_reached; i++)
1737 sc->chunk_offsets[i] = avio_rb32(pb);
1738 else if (atom.type == MKTAG('c','o','6','4'))
1739 for (i = 0; i < entries && !pb->eof_reached; i++)
1740 sc->chunk_offsets[i] = avio_rb64(pb);
1742 return AVERROR_INVALIDDATA;
1744 sc->chunk_count = i;
1746 if (pb->eof_reached)
1753 * Compute codec id for 'lpcm' tag.
1754 * See CoreAudioTypes and AudioStreamBasicDescription at Apple.
1756 enum AVCodecID ff_mov_get_lpcm_codec_id(int bps, int flags)
1763 return ff_get_pcm_codec_id(bps, flags & 1, flags & 2, flags & 4 ? -1 : 0);
1766 static int mov_codec_id(AVStream *st, uint32_t format)
1768 int id = ff_codec_get_id(ff_codec_movaudio_tags, format);
1771 ((format & 0xFFFF) == 'm' + ('s' << 8) ||
1772 (format & 0xFFFF) == 'T' + ('S' << 8)))
1773 id = ff_codec_get_id(ff_codec_wav_tags, av_bswap32(format) & 0xFFFF);
1775 if (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO && id > 0) {
1776 st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
1777 } else if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO &&
1778 /* skip old ASF MPEG-4 tag */
1779 format && format != MKTAG('m','p','4','s')) {
1780 id = ff_codec_get_id(ff_codec_movvideo_tags, format);
1782 id = ff_codec_get_id(ff_codec_bmp_tags, format);
1784 st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
1785 else if (st->codecpar->codec_type == AVMEDIA_TYPE_DATA ||
1786 (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE &&
1787 st->codecpar->codec_id == AV_CODEC_ID_NONE)) {
1788 id = ff_codec_get_id(ff_codec_movsubtitle_tags, format);
1790 st->codecpar->codec_type = AVMEDIA_TYPE_SUBTITLE;
1794 st->codecpar->codec_tag = format;
1799 static void mov_parse_stsd_video(MOVContext *c, AVIOContext *pb,
1800 AVStream *st, MOVStreamContext *sc)
1802 uint8_t codec_name[32];
1806 /* The first 16 bytes of the video sample description are already
1807 * read in ff_mov_read_stsd_entries() */
1808 stsd_start = avio_tell(pb) - 16;
1810 avio_rb16(pb); /* version */
1811 avio_rb16(pb); /* revision level */
1812 avio_rb32(pb); /* vendor */
1813 avio_rb32(pb); /* temporal quality */
1814 avio_rb32(pb); /* spatial quality */
1816 st->codecpar->width = avio_rb16(pb); /* width */
1817 st->codecpar->height = avio_rb16(pb); /* height */
1819 avio_rb32(pb); /* horiz resolution */
1820 avio_rb32(pb); /* vert resolution */
1821 avio_rb32(pb); /* data size, always 0 */
1822 avio_rb16(pb); /* frames per samples */
1824 len = avio_r8(pb); /* codec name, pascal string */
1827 mov_read_mac_string(c, pb, len, codec_name, sizeof(codec_name));
1829 avio_skip(pb, 31 - len);
1832 av_dict_set(&st->metadata, "encoder", codec_name, 0);
1834 /* codec_tag YV12 triggers an UV swap in rawdec.c */
1835 if (!memcmp(codec_name, "Planar Y'CbCr 8-bit 4:2:0", 25)) {
1836 st->codecpar->codec_tag = MKTAG('I', '4', '2', '0');
1837 st->codecpar->width &= ~1;
1838 st->codecpar->height &= ~1;
1840 /* Flash Media Server uses tag H.263 with Sorenson Spark */
1841 if (st->codecpar->codec_tag == MKTAG('H','2','6','3') &&
1842 !memcmp(codec_name, "Sorenson H263", 13))
1843 st->codecpar->codec_id = AV_CODEC_ID_FLV1;
1845 st->codecpar->bits_per_coded_sample = avio_rb16(pb); /* depth */
1847 avio_seek(pb, stsd_start, SEEK_SET);
1849 if (ff_get_qtpalette(st->codecpar->codec_id, pb, sc->palette)) {
1850 st->codecpar->bits_per_coded_sample &= 0x1F;
1851 sc->has_palette = 1;
1855 static void mov_parse_stsd_audio(MOVContext *c, AVIOContext *pb,
1856 AVStream *st, MOVStreamContext *sc)
1858 int bits_per_sample, flags;
1859 uint16_t version = avio_rb16(pb);
1860 AVDictionaryEntry *compatible_brands = av_dict_get(c->fc->metadata, "compatible_brands", NULL, AV_DICT_MATCH_CASE);
1862 avio_rb16(pb); /* revision level */
1863 avio_rb32(pb); /* vendor */
1865 st->codecpar->channels = avio_rb16(pb); /* channel count */
1866 st->codecpar->bits_per_coded_sample = avio_rb16(pb); /* sample size */
1867 av_log(c->fc, AV_LOG_TRACE, "audio channels %d\n", st->codecpar->channels);
1869 sc->audio_cid = avio_rb16(pb);
1870 avio_rb16(pb); /* packet size = 0 */
1872 st->codecpar->sample_rate = ((avio_rb32(pb) >> 16));
1874 // Read QT version 1 fields. In version 0 these do not exist.
1875 av_log(c->fc, AV_LOG_TRACE, "version =%d, isom =%d\n", version, c->isom);
1877 (compatible_brands && strstr(compatible_brands->value, "qt "))) {
1880 sc->samples_per_frame = avio_rb32(pb);
1881 avio_rb32(pb); /* bytes per packet */
1882 sc->bytes_per_frame = avio_rb32(pb);
1883 avio_rb32(pb); /* bytes per sample */
1884 } else if (version == 2) {
1885 avio_rb32(pb); /* sizeof struct only */
1886 st->codecpar->sample_rate = av_int2double(avio_rb64(pb));
1887 st->codecpar->channels = avio_rb32(pb);
1888 avio_rb32(pb); /* always 0x7F000000 */
1889 st->codecpar->bits_per_coded_sample = avio_rb32(pb);
1891 flags = avio_rb32(pb); /* lpcm format specific flag */
1892 sc->bytes_per_frame = avio_rb32(pb);
1893 sc->samples_per_frame = avio_rb32(pb);
1894 if (st->codecpar->codec_tag == MKTAG('l','p','c','m'))
1895 st->codecpar->codec_id =
1896 ff_mov_get_lpcm_codec_id(st->codecpar->bits_per_coded_sample,
1899 if (version == 0 || (version == 1 && sc->audio_cid != -2)) {
1900 /* can't correctly handle variable sized packet as audio unit */
1901 switch (st->codecpar->codec_id) {
1902 case AV_CODEC_ID_MP2:
1903 case AV_CODEC_ID_MP3:
1904 st->need_parsing = AVSTREAM_PARSE_FULL;
1910 if (sc->format == 0) {
1911 if (st->codecpar->bits_per_coded_sample == 8)
1912 st->codecpar->codec_id = mov_codec_id(st, MKTAG('r','a','w',' '));
1913 else if (st->codecpar->bits_per_coded_sample == 16)
1914 st->codecpar->codec_id = mov_codec_id(st, MKTAG('t','w','o','s'));
1917 switch (st->codecpar->codec_id) {
1918 case AV_CODEC_ID_PCM_S8:
1919 case AV_CODEC_ID_PCM_U8:
1920 if (st->codecpar->bits_per_coded_sample == 16)
1921 st->codecpar->codec_id = AV_CODEC_ID_PCM_S16BE;
1923 case AV_CODEC_ID_PCM_S16LE:
1924 case AV_CODEC_ID_PCM_S16BE:
1925 if (st->codecpar->bits_per_coded_sample == 8)
1926 st->codecpar->codec_id = AV_CODEC_ID_PCM_S8;
1927 else if (st->codecpar->bits_per_coded_sample == 24)
1928 st->codecpar->codec_id =
1929 st->codecpar->codec_id == AV_CODEC_ID_PCM_S16BE ?
1930 AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE;
1931 else if (st->codecpar->bits_per_coded_sample == 32)
1932 st->codecpar->codec_id =
1933 st->codecpar->codec_id == AV_CODEC_ID_PCM_S16BE ?
1934 AV_CODEC_ID_PCM_S32BE : AV_CODEC_ID_PCM_S32LE;
1936 /* set values for old format before stsd version 1 appeared */
1937 case AV_CODEC_ID_MACE3:
1938 sc->samples_per_frame = 6;
1939 sc->bytes_per_frame = 2 * st->codecpar->channels;
1941 case AV_CODEC_ID_MACE6:
1942 sc->samples_per_frame = 6;
1943 sc->bytes_per_frame = 1 * st->codecpar->channels;
1945 case AV_CODEC_ID_ADPCM_IMA_QT:
1946 sc->samples_per_frame = 64;
1947 sc->bytes_per_frame = 34 * st->codecpar->channels;
1949 case AV_CODEC_ID_GSM:
1950 sc->samples_per_frame = 160;
1951 sc->bytes_per_frame = 33;
1957 bits_per_sample = av_get_bits_per_sample(st->codecpar->codec_id);
1958 if (bits_per_sample) {
1959 st->codecpar->bits_per_coded_sample = bits_per_sample;
1960 sc->sample_size = (bits_per_sample >> 3) * st->codecpar->channels;
1964 static void mov_parse_stsd_subtitle(MOVContext *c, AVIOContext *pb,
1965 AVStream *st, MOVStreamContext *sc,
1968 // ttxt stsd contains display flags, justification, background
1969 // color, fonts, and default styles, so fake an atom to read it
1970 MOVAtom fake_atom = { .size = size };
1971 // mp4s contains a regular esds atom
1972 if (st->codecpar->codec_tag != AV_RL32("mp4s"))
1973 mov_read_glbl(c, pb, fake_atom);
1974 st->codecpar->width = sc->width;
1975 st->codecpar->height = sc->height;
1978 static uint32_t yuv_to_rgba(uint32_t ycbcr)
1983 y = (ycbcr >> 16) & 0xFF;
1984 cr = (ycbcr >> 8) & 0xFF;
1987 b = av_clip_uint8((1164 * (y - 16) + 2018 * (cb - 128)) / 1000);
1988 g = av_clip_uint8((1164 * (y - 16) - 813 * (cr - 128) - 391 * (cb - 128)) / 1000);
1989 r = av_clip_uint8((1164 * (y - 16) + 1596 * (cr - 128) ) / 1000);
1991 return (r << 16) | (g << 8) | b;
1994 static int mov_rewrite_dvd_sub_extradata(AVStream *st)
1996 char buf[256] = {0};
1997 uint8_t *src = st->codecpar->extradata;
2000 if (st->codecpar->extradata_size != 64)
2003 if (st->codecpar->width > 0 && st->codecpar->height > 0)
2004 snprintf(buf, sizeof(buf), "size: %dx%d\n",
2005 st->codecpar->width, st->codecpar->height);
2006 av_strlcat(buf, "palette: ", sizeof(buf));
2008 for (i = 0; i < 16; i++) {
2009 uint32_t yuv = AV_RB32(src + i * 4);
2010 uint32_t rgba = yuv_to_rgba(yuv);
2012 av_strlcatf(buf, sizeof(buf), "%06"PRIx32"%s", rgba, i != 15 ? ", " : "");
2015 if (av_strlcat(buf, "\n", sizeof(buf)) >= sizeof(buf))
2018 av_freep(&st->codecpar->extradata);
2019 st->codecpar->extradata_size = 0;
2020 st->codecpar->extradata = av_mallocz(strlen(buf) + AV_INPUT_BUFFER_PADDING_SIZE);
2021 if (!st->codecpar->extradata)
2022 return AVERROR(ENOMEM);
2023 st->codecpar->extradata_size = strlen(buf);
2024 memcpy(st->codecpar->extradata, buf, st->codecpar->extradata_size);
2029 static int mov_parse_stsd_data(MOVContext *c, AVIOContext *pb,
2030 AVStream *st, MOVStreamContext *sc,
2035 if (st->codecpar->codec_tag == MKTAG('t','m','c','d')) {
2036 if ((int)size != size)
2037 return AVERROR(ENOMEM);
2039 ret = ff_get_extradata(c->fc, st->codecpar, pb, size);
2043 MOVStreamContext *tmcd_ctx = st->priv_data;
2045 val = AV_RB32(st->codecpar->extradata + 4);
2046 tmcd_ctx->tmcd_flags = val;
2047 st->avg_frame_rate.num = st->codecpar->extradata[16]; /* number of frame */
2048 st->avg_frame_rate.den = 1;
2049 #if FF_API_LAVF_AVCTX
2050 FF_DISABLE_DEPRECATION_WARNINGS
2051 st->codec->time_base = av_inv_q(st->avg_frame_rate);
2052 FF_ENABLE_DEPRECATION_WARNINGS
2054 /* adjust for per frame dur in counter mode */
2055 if (tmcd_ctx->tmcd_flags & 0x0008) {
2056 int timescale = AV_RB32(st->codecpar->extradata + 8);
2057 int framedur = AV_RB32(st->codecpar->extradata + 12);
2058 st->avg_frame_rate.num *= timescale;
2059 st->avg_frame_rate.den *= framedur;
2060 #if FF_API_LAVF_AVCTX
2061 FF_DISABLE_DEPRECATION_WARNINGS
2062 st->codec->time_base.den *= timescale;
2063 st->codec->time_base.num *= framedur;
2064 FF_ENABLE_DEPRECATION_WARNINGS
2068 uint32_t len = AV_RB32(st->codecpar->extradata + 18); /* name atom length */
2069 uint32_t format = AV_RB32(st->codecpar->extradata + 22);
2070 if (format == AV_RB32("name") && (int64_t)size >= (int64_t)len + 18) {
2071 uint16_t str_size = AV_RB16(st->codecpar->extradata + 26); /* string length */
2072 if (str_size > 0 && size >= (int)str_size + 26) {
2073 char *reel_name = av_malloc(str_size + 1);
2075 return AVERROR(ENOMEM);
2076 memcpy(reel_name, st->codecpar->extradata + 30, str_size);
2077 reel_name[str_size] = 0; /* Add null terminator */
2078 /* don't add reel_name if emtpy string */
2079 if (*reel_name == 0) {
2082 av_dict_set(&st->metadata, "reel_name", reel_name, AV_DICT_DONT_STRDUP_VAL);
2089 /* other codec type, just skip (rtp, mp4s ...) */
2090 avio_skip(pb, size);
2095 static int mov_finalize_stsd_codec(MOVContext *c, AVIOContext *pb,
2096 AVStream *st, MOVStreamContext *sc)
2098 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
2099 !st->codecpar->sample_rate && sc->time_scale > 1)
2100 st->codecpar->sample_rate = sc->time_scale;
2102 /* special codec parameters handling */
2103 switch (st->codecpar->codec_id) {
2104 #if CONFIG_DV_DEMUXER
2105 case AV_CODEC_ID_DVAUDIO:
2106 c->dv_fctx = avformat_alloc_context();
2108 av_log(c->fc, AV_LOG_ERROR, "dv demux context alloc error\n");
2109 return AVERROR(ENOMEM);
2111 c->dv_demux = avpriv_dv_init_demux(c->dv_fctx);
2113 av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
2114 return AVERROR(ENOMEM);
2116 sc->dv_audio_container = 1;
2117 st->codecpar->codec_id = AV_CODEC_ID_PCM_S16LE;
2120 /* no ifdef since parameters are always those */
2121 case AV_CODEC_ID_QCELP:
2122 st->codecpar->channels = 1;
2123 // force sample rate for qcelp when not stored in mov
2124 if (st->codecpar->codec_tag != MKTAG('Q','c','l','p'))
2125 st->codecpar->sample_rate = 8000;
2126 // FIXME: Why is the following needed for some files?
2127 sc->samples_per_frame = 160;
2128 if (!sc->bytes_per_frame)
2129 sc->bytes_per_frame = 35;
2131 case AV_CODEC_ID_AMR_NB:
2132 st->codecpar->channels = 1;
2133 /* force sample rate for amr, stsd in 3gp does not store sample rate */
2134 st->codecpar->sample_rate = 8000;
2136 case AV_CODEC_ID_AMR_WB:
2137 st->codecpar->channels = 1;
2138 st->codecpar->sample_rate = 16000;
2140 case AV_CODEC_ID_MP2:
2141 case AV_CODEC_ID_MP3:
2142 /* force type after stsd for m1a hdlr */
2143 st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
2145 case AV_CODEC_ID_GSM:
2146 case AV_CODEC_ID_ADPCM_MS:
2147 case AV_CODEC_ID_ADPCM_IMA_WAV:
2148 case AV_CODEC_ID_ILBC:
2149 case AV_CODEC_ID_MACE3:
2150 case AV_CODEC_ID_MACE6:
2151 case AV_CODEC_ID_QDM2:
2152 st->codecpar->block_align = sc->bytes_per_frame;
2154 case AV_CODEC_ID_ALAC:
2155 if (st->codecpar->extradata_size == 36) {
2156 st->codecpar->channels = AV_RB8 (st->codecpar->extradata + 21);
2157 st->codecpar->sample_rate = AV_RB32(st->codecpar->extradata + 32);
2160 case AV_CODEC_ID_AC3:
2161 case AV_CODEC_ID_EAC3:
2162 case AV_CODEC_ID_MPEG1VIDEO:
2163 case AV_CODEC_ID_VC1:
2164 case AV_CODEC_ID_VP9:
2165 st->need_parsing = AVSTREAM_PARSE_FULL;
2173 static int mov_skip_multiple_stsd(MOVContext *c, AVIOContext *pb,
2174 int codec_tag, int format,
2177 int video_codec_id = ff_codec_get_id(ff_codec_movvideo_tags, format);
2180 (codec_tag != format &&
2181 // prores is allowed to have differing data format and codec tag
2182 codec_tag != AV_RL32("apcn") && codec_tag != AV_RL32("apch") &&
2183 (c->fc->video_codec_id ? video_codec_id != c->fc->video_codec_id
2184 : codec_tag != MKTAG('j','p','e','g')))) {
2185 /* Multiple fourcc, we skip JPEG. This is not correct, we should
2186 * export it as a separate AVStream but this needs a few changes
2187 * in the MOV demuxer, patch welcome. */
2189 av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n");
2190 avio_skip(pb, size);
2193 if ( codec_tag == AV_RL32("hvc1") ||
2194 codec_tag == AV_RL32("hev1")
2196 av_log(c->fc, AV_LOG_WARNING, "Concatenated H.264 or H.265 might not play correctly.\n");
2201 int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries)
2204 MOVStreamContext *sc;
2205 int pseudo_stream_id;
2207 if (c->fc->nb_streams < 1)
2209 st = c->fc->streams[c->fc->nb_streams-1];
2212 for (pseudo_stream_id = 0;
2213 pseudo_stream_id < entries && !pb->eof_reached;
2214 pseudo_stream_id++) {
2215 //Parsing Sample description table
2217 int ret, dref_id = 1;
2218 MOVAtom a = { AV_RL32("stsd") };
2219 int64_t start_pos = avio_tell(pb);
2220 int64_t size = avio_rb32(pb); /* size */
2221 uint32_t format = avio_rl32(pb); /* data format */
2224 avio_rb32(pb); /* reserved */
2225 avio_rb16(pb); /* reserved */
2226 dref_id = avio_rb16(pb);
2227 } else if (size <= 7) {
2228 av_log(c->fc, AV_LOG_ERROR,
2229 "invalid size %"PRId64" in stsd\n", size);
2230 return AVERROR_INVALIDDATA;
2233 if (mov_skip_multiple_stsd(c, pb, st->codecpar->codec_tag, format,
2234 size - (avio_tell(pb) - start_pos)))
2237 sc->pseudo_stream_id = st->codecpar->codec_tag ? -1 : pseudo_stream_id;
2238 sc->dref_id= dref_id;
2239 sc->format = format;
2241 id = mov_codec_id(st, format);
2243 av_log(c->fc, AV_LOG_TRACE,
2244 "size=%"PRId64" 4CC= %c%c%c%c/0x%08x codec_type=%d\n", size,
2245 (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff,
2246 (format >> 24) & 0xff, format, st->codecpar->codec_type);
2248 if (st->codecpar->codec_type==AVMEDIA_TYPE_VIDEO) {
2249 st->codecpar->codec_id = id;
2250 mov_parse_stsd_video(c, pb, st, sc);
2251 } else if (st->codecpar->codec_type==AVMEDIA_TYPE_AUDIO) {
2252 st->codecpar->codec_id = id;
2253 mov_parse_stsd_audio(c, pb, st, sc);
2254 } else if (st->codecpar->codec_type==AVMEDIA_TYPE_SUBTITLE){
2255 st->codecpar->codec_id = id;
2256 mov_parse_stsd_subtitle(c, pb, st, sc,
2257 size - (avio_tell(pb) - start_pos));
2259 ret = mov_parse_stsd_data(c, pb, st, sc,
2260 size - (avio_tell(pb) - start_pos));
2264 /* this will read extra atoms at the end (wave, alac, damr, avcC, hvcC, SMI ...) */
2265 a.size = size - (avio_tell(pb) - start_pos);
2267 if ((ret = mov_read_default(c, pb, a)) < 0)
2269 } else if (a.size > 0)
2270 avio_skip(pb, a.size);
2272 if (sc->extradata) {
2273 int extra_size = st->codecpar->extradata_size;
2275 /* Move the current stream extradata to the stream context one. */
2276 sc->extradata_size[pseudo_stream_id] = extra_size;
2277 sc->extradata[pseudo_stream_id] = av_malloc(extra_size + AV_INPUT_BUFFER_PADDING_SIZE);
2278 if (!sc->extradata[pseudo_stream_id])
2279 return AVERROR(ENOMEM);
2280 memcpy(sc->extradata[pseudo_stream_id], st->codecpar->extradata, extra_size);
2281 av_freep(&st->codecpar->extradata);
2282 st->codecpar->extradata_size = 0;
2286 if (pb->eof_reached)
2289 return mov_finalize_stsd_codec(c, pb, st, sc);
2292 static int mov_read_stsd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2295 MOVStreamContext *sc;
2299 if (c->fc->nb_streams < 1)
2301 st = c->fc->streams[c->fc->nb_streams - 1];
2304 avio_r8(pb); /* version */
2305 avio_rb24(pb); /* flags */
2306 entries = avio_rb32(pb); /* entries */
2309 av_log(c->fc, AV_LOG_ERROR, "invalid STSD entries %d\n", entries);
2310 return AVERROR_INVALIDDATA;
2313 if (sc->extradata) {
2314 av_log(c->fc, AV_LOG_ERROR, "Duplicate STSD\n");
2315 return AVERROR_INVALIDDATA;
2317 /* Prepare space for hosting multiple extradata. */
2318 sc->extradata = av_mallocz_array(entries, sizeof(*sc->extradata));
2319 sc->extradata_size = av_mallocz_array(entries, sizeof(*sc->extradata_size));
2320 if (!sc->extradata_size || !sc->extradata) {
2321 ret = AVERROR(ENOMEM);
2325 ret = ff_mov_read_stsd_entries(c, pb, entries);
2329 sc->stsd_count = entries;
2331 /* Restore back the primary extradata. */
2332 av_freep(&st->codecpar->extradata);
2333 st->codecpar->extradata_size = sc->extradata_size[0];
2334 if (sc->extradata_size[0]) {
2335 st->codecpar->extradata = av_mallocz(sc->extradata_size[0] + AV_INPUT_BUFFER_PADDING_SIZE);
2336 if (!st->codecpar->extradata)
2337 return AVERROR(ENOMEM);
2338 memcpy(st->codecpar->extradata, sc->extradata[0], sc->extradata_size[0]);
2343 av_freep(&sc->extradata);
2344 av_freep(&sc->extradata_size);
2348 static int mov_read_stsc(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2351 MOVStreamContext *sc;
2352 unsigned int i, entries;
2354 if (c->fc->nb_streams < 1)
2356 st = c->fc->streams[c->fc->nb_streams-1];
2359 avio_r8(pb); /* version */
2360 avio_rb24(pb); /* flags */
2362 entries = avio_rb32(pb);
2364 av_log(c->fc, AV_LOG_TRACE, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
2369 av_log(c->fc, AV_LOG_WARNING, "Duplicated STSC atom\n");
2370 av_free(sc->stsc_data);
2372 sc->stsc_data = av_malloc_array(entries, sizeof(*sc->stsc_data));
2374 return AVERROR(ENOMEM);
2376 for (i = 0; i < entries && !pb->eof_reached; i++) {
2377 sc->stsc_data[i].first = avio_rb32(pb);
2378 sc->stsc_data[i].count = avio_rb32(pb);
2379 sc->stsc_data[i].id = avio_rb32(pb);
2384 if (pb->eof_reached)
2390 /* Compute the samples value for the stsc entry at the given index. */
2391 static inline int mov_get_stsc_samples(MOVStreamContext *sc, int index)
2395 if (index < sc->stsc_count - 1)
2396 chunk_count = sc->stsc_data[index + 1].first - sc->stsc_data[index].first;
2398 chunk_count = sc->chunk_count - (sc->stsc_data[index].first - 1);
2400 return sc->stsc_data[index].count * chunk_count;
2403 static int mov_read_stps(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2406 MOVStreamContext *sc;
2407 unsigned i, entries;
2409 if (c->fc->nb_streams < 1)
2411 st = c->fc->streams[c->fc->nb_streams-1];
2414 avio_rb32(pb); // version + flags
2416 entries = avio_rb32(pb);
2418 av_log(c->fc, AV_LOG_WARNING, "Duplicated STPS atom\n");
2419 av_free(sc->stps_data);
2421 sc->stps_data = av_malloc_array(entries, sizeof(*sc->stps_data));
2423 return AVERROR(ENOMEM);
2425 for (i = 0; i < entries && !pb->eof_reached; i++) {
2426 sc->stps_data[i] = avio_rb32(pb);
2427 //av_log(c->fc, AV_LOG_TRACE, "stps %d\n", sc->stps_data[i]);
2432 if (pb->eof_reached)
2438 static int mov_read_stss(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2441 MOVStreamContext *sc;
2442 unsigned int i, entries;
2444 if (c->fc->nb_streams < 1)
2446 st = c->fc->streams[c->fc->nb_streams-1];
2449 avio_r8(pb); /* version */
2450 avio_rb24(pb); /* flags */
2452 entries = avio_rb32(pb);
2454 av_log(c->fc, AV_LOG_TRACE, "keyframe_count = %d\n", entries);
2458 sc->keyframe_absent = 1;
2459 if (!st->need_parsing && st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
2460 st->need_parsing = AVSTREAM_PARSE_HEADERS;
2464 av_log(c->fc, AV_LOG_WARNING, "Duplicated STSS atom\n");
2465 if (entries >= UINT_MAX / sizeof(int))
2466 return AVERROR_INVALIDDATA;
2467 av_freep(&sc->keyframes);
2468 sc->keyframe_count = 0;
2469 sc->keyframes = av_malloc_array(entries, sizeof(*sc->keyframes));
2471 return AVERROR(ENOMEM);
2473 for (i = 0; i < entries && !pb->eof_reached; i++) {
2474 sc->keyframes[i] = avio_rb32(pb);
2475 //av_log(c->fc, AV_LOG_TRACE, "keyframes[]=%d\n", sc->keyframes[i]);
2478 sc->keyframe_count = i;
2480 if (pb->eof_reached)
2486 static int mov_read_stsz(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2489 MOVStreamContext *sc;
2490 unsigned int i, entries, sample_size, field_size, num_bytes;
2495 if (c->fc->nb_streams < 1)
2497 st = c->fc->streams[c->fc->nb_streams-1];
2500 avio_r8(pb); /* version */
2501 avio_rb24(pb); /* flags */
2503 if (atom.type == MKTAG('s','t','s','z')) {
2504 sample_size = avio_rb32(pb);
2505 if (!sc->sample_size) /* do not overwrite value computed in stsd */
2506 sc->sample_size = sample_size;
2507 sc->stsz_sample_size = sample_size;
2511 avio_rb24(pb); /* reserved */
2512 field_size = avio_r8(pb);
2514 entries = avio_rb32(pb);
2516 av_log(c->fc, AV_LOG_TRACE, "sample_size = %d sample_count = %d\n", sc->sample_size, entries);
2518 sc->sample_count = entries;
2522 if (field_size != 4 && field_size != 8 && field_size != 16 && field_size != 32) {
2523 av_log(c->fc, AV_LOG_ERROR, "Invalid sample field size %d\n", field_size);
2524 return AVERROR_INVALIDDATA;
2529 if (entries >= (UINT_MAX - 4) / field_size)
2530 return AVERROR_INVALIDDATA;
2531 if (sc->sample_sizes)
2532 av_log(c->fc, AV_LOG_WARNING, "Duplicated STSZ atom\n");
2533 av_free(sc->sample_sizes);
2534 sc->sample_count = 0;
2535 sc->sample_sizes = av_malloc_array(entries, sizeof(*sc->sample_sizes));
2536 if (!sc->sample_sizes)
2537 return AVERROR(ENOMEM);
2539 num_bytes = (entries*field_size+4)>>3;
2541 buf = av_malloc(num_bytes+AV_INPUT_BUFFER_PADDING_SIZE);
2543 av_freep(&sc->sample_sizes);
2544 return AVERROR(ENOMEM);
2547 ret = ffio_read_size(pb, buf, num_bytes);
2549 av_freep(&sc->sample_sizes);
2554 init_get_bits(&gb, buf, 8*num_bytes);
2556 for (i = 0; i < entries && !pb->eof_reached; i++) {
2557 sc->sample_sizes[i] = get_bits_long(&gb, field_size);
2558 sc->data_size += sc->sample_sizes[i];
2561 sc->sample_count = i;
2565 if (pb->eof_reached)
2571 static int mov_read_stts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2574 MOVStreamContext *sc;
2575 unsigned int i, entries;
2577 int64_t total_sample_count=0;
2579 if (c->fc->nb_streams < 1)
2581 st = c->fc->streams[c->fc->nb_streams-1];
2584 avio_r8(pb); /* version */
2585 avio_rb24(pb); /* flags */
2586 entries = avio_rb32(pb);
2588 av_log(c->fc, AV_LOG_TRACE, "track[%i].stts.entries = %i\n",
2589 c->fc->nb_streams-1, entries);
2592 av_log(c->fc, AV_LOG_WARNING, "Duplicated STTS atom\n");
2593 av_free(sc->stts_data);
2595 sc->stts_data = av_malloc_array(entries, sizeof(*sc->stts_data));
2597 return AVERROR(ENOMEM);
2599 for (i = 0; i < entries && !pb->eof_reached; i++) {
2600 int sample_duration;
2603 sample_count=avio_rb32(pb);
2604 sample_duration = avio_rb32(pb);
2606 if (sample_count < 0) {
2607 av_log(c->fc, AV_LOG_ERROR, "Invalid sample_count=%d\n", sample_count);
2608 return AVERROR_INVALIDDATA;
2610 sc->stts_data[i].count= sample_count;
2611 sc->stts_data[i].duration= sample_duration;
2613 av_log(c->fc, AV_LOG_TRACE, "sample_count=%d, sample_duration=%d\n",
2614 sample_count, sample_duration);
2618 && sample_count == 1
2619 && total_sample_count > 100
2620 && sample_duration/10 > duration / total_sample_count)
2621 sample_duration = duration / total_sample_count;
2622 duration+=(int64_t)sample_duration*sample_count;
2623 total_sample_count+=sample_count;
2628 sc->duration_for_fps += duration;
2629 sc->nb_frames_for_fps += total_sample_count;
2631 if (pb->eof_reached)
2634 st->nb_frames= total_sample_count;
2636 st->duration= duration;
2637 sc->track_end = duration;
2641 static void mov_update_dts_shift(MOVStreamContext *sc, int duration)
2644 if (duration == INT_MIN) {
2645 av_log(NULL, AV_LOG_WARNING, "mov_update_dts_shift(): dts_shift set to %d\n", INT_MAX);
2648 sc->dts_shift = FFMAX(sc->dts_shift, -duration);
2652 static int mov_read_ctts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2655 MOVStreamContext *sc;
2656 unsigned int i, entries, ctts_count = 0;
2658 if (c->fc->nb_streams < 1)
2660 st = c->fc->streams[c->fc->nb_streams-1];
2663 avio_r8(pb); /* version */
2664 avio_rb24(pb); /* flags */
2665 entries = avio_rb32(pb);
2667 av_log(c->fc, AV_LOG_TRACE, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
2671 if (entries >= UINT_MAX / sizeof(*sc->ctts_data))
2672 return AVERROR_INVALIDDATA;
2673 av_freep(&sc->ctts_data);
2674 sc->ctts_data = av_realloc(NULL, entries * sizeof(*sc->ctts_data));
2676 return AVERROR(ENOMEM);
2678 for (i = 0; i < entries && !pb->eof_reached; i++) {
2679 int count =avio_rb32(pb);
2680 int duration =avio_rb32(pb);
2683 av_log(c->fc, AV_LOG_TRACE,
2684 "ignoring CTTS entry with count=%d duration=%d\n",
2689 sc->ctts_data[ctts_count].count = count;
2690 sc->ctts_data[ctts_count].duration = duration;
2693 av_log(c->fc, AV_LOG_TRACE, "count=%d, duration=%d\n",
2696 if (FFNABS(duration) < -(1<<28) && i+2<entries) {
2697 av_log(c->fc, AV_LOG_WARNING, "CTTS invalid\n");
2698 av_freep(&sc->ctts_data);
2704 mov_update_dts_shift(sc, duration);
2707 sc->ctts_count = ctts_count;
2709 if (pb->eof_reached)
2712 av_log(c->fc, AV_LOG_TRACE, "dts shift %d\n", sc->dts_shift);
2717 static int mov_read_sbgp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2720 MOVStreamContext *sc;
2721 unsigned int i, entries;
2723 uint32_t grouping_type;
2725 if (c->fc->nb_streams < 1)
2727 st = c->fc->streams[c->fc->nb_streams-1];
2730 version = avio_r8(pb); /* version */
2731 avio_rb24(pb); /* flags */
2732 grouping_type = avio_rl32(pb);
2733 if (grouping_type != MKTAG( 'r','a','p',' '))
2734 return 0; /* only support 'rap ' grouping */
2736 avio_rb32(pb); /* grouping_type_parameter */
2738 entries = avio_rb32(pb);
2742 av_log(c->fc, AV_LOG_WARNING, "Duplicated SBGP atom\n");
2743 av_free(sc->rap_group);
2744 sc->rap_group_count = 0;
2745 sc->rap_group = av_malloc_array(entries, sizeof(*sc->rap_group));
2747 return AVERROR(ENOMEM);
2749 for (i = 0; i < entries && !pb->eof_reached; i++) {
2750 sc->rap_group[i].count = avio_rb32(pb); /* sample_count */
2751 sc->rap_group[i].index = avio_rb32(pb); /* group_description_index */
2754 sc->rap_group_count = i;
2756 return pb->eof_reached ? AVERROR_EOF : 0;
2759 static void mov_build_index(MOVContext *mov, AVStream *st)
2761 MOVStreamContext *sc = st->priv_data;
2762 int64_t current_offset;
2763 int64_t current_dts = 0;
2764 unsigned int stts_index = 0;
2765 unsigned int stsc_index = 0;
2766 unsigned int stss_index = 0;
2767 unsigned int stps_index = 0;
2769 uint64_t stream_size = 0;
2771 if (sc->elst_count) {
2772 int i, edit_start_index = 0, unsupported = 0;
2773 int64_t empty_duration = 0; // empty duration of the first edit list entry
2774 int64_t start_time = 0; // start time of the media
2776 for (i = 0; i < sc->elst_count; i++) {
2777 const MOVElst *e = &sc->elst_data[i];
2778 if (i == 0 && e->time == -1) {
2779 /* if empty, the first entry is the start time of the stream
2780 * relative to the presentation itself */
2781 empty_duration = e->duration;
2782 edit_start_index = 1;
2783 } else if (i == edit_start_index && e->time >= 0) {
2784 start_time = e->time;
2789 av_log(mov->fc, AV_LOG_WARNING, "multiple edit list entries, "
2790 "a/v desync might occur, patch welcome\n");
2792 /* adjust first dts according to edit list */
2793 if ((empty_duration || start_time) && mov->time_scale > 0) {
2795 empty_duration = av_rescale(empty_duration, sc->time_scale, mov->time_scale);
2796 sc->time_offset = start_time - empty_duration;
2797 current_dts = -sc->time_offset;
2800 if (!unsupported && st->codecpar->codec_id == AV_CODEC_ID_AAC && start_time > 0)
2801 sc->start_pad = start_time;
2804 /* only use old uncompressed audio chunk demuxing when stts specifies it */
2805 if (!(st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
2806 sc->stts_count == 1 && sc->stts_data[0].duration == 1)) {
2807 unsigned int current_sample = 0;
2808 unsigned int stts_sample = 0;
2809 unsigned int sample_size;
2810 unsigned int distance = 0;
2811 unsigned int rap_group_index = 0;
2812 unsigned int rap_group_sample = 0;
2813 int64_t last_dts = 0;
2814 int64_t dts_correction = 0;
2815 int rap_group_present = sc->rap_group_count && sc->rap_group;
2816 int key_off = (sc->keyframe_count && sc->keyframes[0] > 0) || (sc->stps_count && sc->stps_data[0] > 0);
2818 current_dts -= sc->dts_shift;
2819 last_dts = current_dts;
2821 if (!sc->sample_count || st->nb_index_entries)
2823 if (sc->sample_count >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries)
2825 if (av_reallocp_array(&st->index_entries,
2826 st->nb_index_entries + sc->sample_count,
2827 sizeof(*st->index_entries)) < 0) {
2828 st->nb_index_entries = 0;
2831 st->index_entries_allocated_size = (st->nb_index_entries + sc->sample_count) * sizeof(*st->index_entries);
2833 for (i = 0; i < sc->chunk_count; i++) {
2834 int64_t next_offset = i+1 < sc->chunk_count ? sc->chunk_offsets[i+1] : INT64_MAX;
2835 current_offset = sc->chunk_offsets[i];
2836 while (stsc_index + 1 < sc->stsc_count &&
2837 i + 1 == sc->stsc_data[stsc_index + 1].first)
2840 if (next_offset > current_offset && sc->sample_size>0 && sc->sample_size < sc->stsz_sample_size &&
2841 sc->stsc_data[stsc_index].count * (int64_t)sc->stsz_sample_size > next_offset - current_offset) {
2842 av_log(mov->fc, AV_LOG_WARNING, "STSZ sample size %d invalid (too large), ignoring\n", sc->stsz_sample_size);
2843 sc->stsz_sample_size = sc->sample_size;
2845 if (sc->stsz_sample_size>0 && sc->stsz_sample_size < sc->sample_size) {
2846 av_log(mov->fc, AV_LOG_WARNING, "STSZ sample size %d invalid (too small), ignoring\n", sc->stsz_sample_size);
2847 sc->stsz_sample_size = sc->sample_size;
2850 for (j = 0; j < sc->stsc_data[stsc_index].count; j++) {
2852 if (current_sample >= sc->sample_count) {
2853 av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
2857 if (!sc->keyframe_absent && (!sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index])) {
2859 if (stss_index + 1 < sc->keyframe_count)
2861 } else if (sc->stps_count && current_sample+key_off == sc->stps_data[stps_index]) {
2863 if (stps_index + 1 < sc->stps_count)
2866 if (rap_group_present && rap_group_index < sc->rap_group_count) {
2867 if (sc->rap_group[rap_group_index].index > 0)
2869 if (++rap_group_sample == sc->rap_group[rap_group_index].count) {
2870 rap_group_sample = 0;
2874 if (sc->keyframe_absent
2876 && !rap_group_present
2877 && (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO || (i==0 && j==0)))
2881 sample_size = sc->stsz_sample_size > 0 ? sc->stsz_sample_size : sc->sample_sizes[current_sample];
2882 if (sc->pseudo_stream_id == -1 ||
2883 sc->stsc_data[stsc_index].id - 1 == sc->pseudo_stream_id) {
2885 if (sample_size > 0x3FFFFFFF) {
2886 av_log(mov->fc, AV_LOG_ERROR, "Sample size %u is too large\n", sample_size);
2889 e = &st->index_entries[st->nb_index_entries++];
2890 e->pos = current_offset;
2891 e->timestamp = current_dts;
2892 e->size = sample_size;
2893 e->min_distance = distance;
2894 e->flags = keyframe ? AVINDEX_KEYFRAME : 0;
2895 av_log(mov->fc, AV_LOG_TRACE, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
2896 "size %d, distance %d, keyframe %d\n", st->index, current_sample,
2897 current_offset, current_dts, sample_size, distance, keyframe);
2898 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && st->nb_index_entries < 100)
2899 ff_rfps_add_frame(mov->fc, st, current_dts);
2902 current_offset += sample_size;
2903 stream_size += sample_size;
2905 /* A negative sample duration is invalid based on the spec,
2906 * but some samples need it to correct the DTS. */
2907 if (sc->stts_data[stts_index].duration < 0) {
2908 av_log(mov->fc, AV_LOG_WARNING,
2909 "Invalid SampleDelta %d in STTS, at %d st:%d\n",
2910 sc->stts_data[stts_index].duration, stts_index,
2912 dts_correction += sc->stts_data[stts_index].duration - 1;
2913 sc->stts_data[stts_index].duration = 1;
2915 current_dts += sc->stts_data[stts_index].duration;
2916 if (!dts_correction || current_dts + dts_correction > last_dts) {
2917 current_dts += dts_correction;
2920 /* Avoid creating non-monotonous DTS */
2921 dts_correction += current_dts - last_dts - 1;
2922 current_dts = last_dts + 1;
2924 last_dts = current_dts;
2928 if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
2934 if (st->duration > 0)
2935 st->codecpar->bit_rate = stream_size*8*sc->time_scale/st->duration;
2937 unsigned chunk_samples, total = 0;
2939 // compute total chunk count
2940 for (i = 0; i < sc->stsc_count; i++) {
2941 unsigned count, chunk_count;
2943 chunk_samples = sc->stsc_data[i].count;
2944 if (i != sc->stsc_count - 1 &&
2945 sc->samples_per_frame && chunk_samples % sc->samples_per_frame) {
2946 av_log(mov->fc, AV_LOG_ERROR, "error unaligned chunk\n");
2950 if (sc->samples_per_frame >= 160) { // gsm
2951 count = chunk_samples / sc->samples_per_frame;
2952 } else if (sc->samples_per_frame > 1) {
2953 unsigned samples = (1024/sc->samples_per_frame)*sc->samples_per_frame;
2954 count = (chunk_samples+samples-1) / samples;
2956 count = (chunk_samples+1023) / 1024;
2959 if (i < sc->stsc_count - 1)
2960 chunk_count = sc->stsc_data[i+1].first - sc->stsc_data[i].first;
2962 chunk_count = sc->chunk_count - (sc->stsc_data[i].first - 1);
2963 total += chunk_count * count;
2966 av_log(mov->fc, AV_LOG_TRACE, "chunk count %d\n", total);
2967 if (total >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries)
2969 if (av_reallocp_array(&st->index_entries,
2970 st->nb_index_entries + total,
2971 sizeof(*st->index_entries)) < 0) {
2972 st->nb_index_entries = 0;
2975 st->index_entries_allocated_size = (st->nb_index_entries + total) * sizeof(*st->index_entries);
2978 for (i = 0; i < sc->chunk_count; i++) {
2979 current_offset = sc->chunk_offsets[i];
2980 if (stsc_index + 1 < sc->stsc_count &&
2981 i + 1 == sc->stsc_data[stsc_index + 1].first)
2983 chunk_samples = sc->stsc_data[stsc_index].count;
2985 while (chunk_samples > 0) {
2987 unsigned size, samples;
2989 if (sc->samples_per_frame > 1 && !sc->bytes_per_frame) {
2990 avpriv_request_sample(mov->fc,
2991 "Zero bytes per frame, but %d samples per frame",
2992 sc->samples_per_frame);
2996 if (sc->samples_per_frame >= 160) { // gsm
2997 samples = sc->samples_per_frame;
2998 size = sc->bytes_per_frame;
3000 if (sc->samples_per_frame > 1) {
3001 samples = FFMIN((1024 / sc->samples_per_frame)*
3002 sc->samples_per_frame, chunk_samples);
3003 size = (samples / sc->samples_per_frame) * sc->bytes_per_frame;
3005 samples = FFMIN(1024, chunk_samples);
3006 size = samples * sc->sample_size;
3010 if (st->nb_index_entries >= total) {
3011 av_log(mov->fc, AV_LOG_ERROR, "wrong chunk count %d\n", total);
3014 if (size > 0x3FFFFFFF) {
3015 av_log(mov->fc, AV_LOG_ERROR, "Sample size %u is too large\n", size);
3018 e = &st->index_entries[st->nb_index_entries++];
3019 e->pos = current_offset;
3020 e->timestamp = current_dts;
3022 e->min_distance = 0;
3023 e->flags = AVINDEX_KEYFRAME;
3024 av_log(mov->fc, AV_LOG_TRACE, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", "
3025 "size %d, duration %d\n", st->index, i, current_offset, current_dts,
3028 current_offset += size;
3029 current_dts += samples;
3030 chunk_samples -= samples;
3036 static int test_same_origin(const char *src, const char *ref) {
3046 av_url_split(src_proto, sizeof(src_proto), src_auth, sizeof(src_auth), src_host, sizeof(src_host), &src_port, NULL, 0, src);
3047 av_url_split(ref_proto, sizeof(ref_proto), ref_auth, sizeof(ref_auth), ref_host, sizeof(ref_host), &ref_port, NULL, 0, ref);
3049 if (strlen(src) == 0) {
3051 } else if (strlen(src_auth) + 1 >= sizeof(src_auth) ||
3052 strlen(ref_auth) + 1 >= sizeof(ref_auth) ||
3053 strlen(src_host) + 1 >= sizeof(src_host) ||
3054 strlen(ref_host) + 1 >= sizeof(ref_host)) {
3056 } else if (strcmp(src_proto, ref_proto) ||
3057 strcmp(src_auth, ref_auth) ||
3058 strcmp(src_host, ref_host) ||
3059 src_port != ref_port) {
3065 static int mov_open_dref(MOVContext *c, AVIOContext **pb, const char *src, MOVDref *ref)
3067 /* try relative path, we do not try the absolute because it can leak information about our
3068 system to an attacker */
3069 if (ref->nlvl_to > 0 && ref->nlvl_from > 0) {
3070 char filename[1025];
3071 const char *src_path;
3074 /* find a source dir */
3075 src_path = strrchr(src, '/');
3081 /* find a next level down to target */
3082 for (i = 0, l = strlen(ref->path) - 1; l >= 0; l--)
3083 if (ref->path[l] == '/') {
3084 if (i == ref->nlvl_to - 1)
3090 /* compose filename if next level down to target was found */
3091 if (i == ref->nlvl_to - 1 && src_path - src < sizeof(filename)) {
3092 memcpy(filename, src, src_path - src);
3093 filename[src_path - src] = 0;
3095 for (i = 1; i < ref->nlvl_from; i++)
3096 av_strlcat(filename, "../", sizeof(filename));
3098 av_strlcat(filename, ref->path + l + 1, sizeof(filename));
3099 if (!c->use_absolute_path) {
3100 int same_origin = test_same_origin(src, filename);
3103 av_log(c->fc, AV_LOG_ERROR,
3104 "Reference with mismatching origin, %s not tried for security reasons, "
3105 "set demuxer option use_absolute_path to allow it anyway\n",
3107 return AVERROR(ENOENT);
3110 if(strstr(ref->path + l + 1, "..") ||
3111 strstr(ref->path + l + 1, ":") ||
3112 (ref->nlvl_from > 1 && same_origin < 0) ||
3113 (filename[0] == '/' && src_path == src))
3114 return AVERROR(ENOENT);
3117 if (strlen(filename) + 1 == sizeof(filename))
3118 return AVERROR(ENOENT);
3119 if (!c->fc->io_open(c->fc, pb, filename, AVIO_FLAG_READ, NULL))
3122 } else if (c->use_absolute_path) {
3123 av_log(c->fc, AV_LOG_WARNING, "Using absolute path on user request, "
3124 "this is a possible security issue\n");
3125 if (!c->fc->io_open(c->fc, pb, ref->path, AVIO_FLAG_READ, NULL))
3128 av_log(c->fc, AV_LOG_ERROR,
3129 "Absolute path %s not tried for security reasons, "
3130 "set demuxer option use_absolute_path to allow absolute paths\n",
3134 return AVERROR(ENOENT);
3137 static void fix_timescale(MOVContext *c, MOVStreamContext *sc)
3139 if (sc->time_scale <= 0) {
3140 av_log(c->fc, AV_LOG_WARNING, "stream %d, timescale not set\n", sc->ffindex);
3141 sc->time_scale = c->time_scale;
3142 if (sc->time_scale <= 0)
3147 static int mov_read_trak(MOVContext *c, AVIOContext *pb, MOVAtom atom)
3150 MOVStreamContext *sc;
3153 st = avformat_new_stream(c->fc, NULL);
3154 if (!st) return AVERROR(ENOMEM);
3155 st->id = c->fc->nb_streams;
3156 sc = av_mallocz(sizeof(MOVStreamContext));
3157 if (!sc) return AVERROR(ENOMEM);
3160 st->codecpar->codec_type = AVMEDIA_TYPE_DATA;
3161 sc->ffindex = st->index;
3162 c->trak_index = st->index;
3164 if ((ret = mov_read_default(c, pb, atom)) < 0)
3170 if (sc->chunk_count && (!sc->stts_count || !sc->stsc_count ||
3171 (!sc->sample_size && !sc->sample_count))) {
3172 av_log(c->fc, AV_LOG_ERROR, "stream %d, missing mandatory atoms, broken header\n",
3177 fix_timescale(c, sc);
3179 avpriv_set_pts_info(st, 64, 1, sc->time_scale);
3181 mov_build_index(c, st);
3183 if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) {
3184 MOVDref *dref = &sc->drefs[sc->dref_id - 1];
3185 if (c->enable_drefs) {
3186 if (mov_open_dref(c, &sc->pb, c->fc->filename, dref) < 0)
3187 av_log(c->fc, AV_LOG_ERROR,
3188 "stream %d, error opening alias: path='%s', dir='%s', "
3189 "filename='%s', volume='%s', nlvl_from=%d, nlvl_to=%d\n",
3190 st->index, dref->path, dref->dir, dref->filename,
3191 dref->volume, dref->nlvl_from, dref->nlvl_to);
3193 av_log(c->fc, AV_LOG_WARNING,
3194 "Skipped opening external track: "
3195 "stream %d, alias: path='%s', dir='%s', "
3196 "filename='%s', volume='%s', nlvl_from=%d, nlvl_to=%d."
3197 "Set enable_drefs to allow this.\n",
3198 st->index, dref->path, dref->dir, dref->filename,
3199 dref->volume, dref->nlvl_from, dref->nlvl_to);
3203 sc->pb_is_copied = 1;
3206 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
3207 if (!st->sample_aspect_ratio.num && st->codecpar->width && st->codecpar->height &&
3208 sc->height && sc->width &&
3209 (st->codecpar->width != sc->width || st->codecpar->height != sc->height)) {
3210 st->sample_aspect_ratio = av_d2q(((double)st->codecpar->height * sc->width) /
3211 ((double)st->codecpar->width * sc->height), INT_MAX);
3214 #if FF_API_R_FRAME_RATE
3215 if (sc->stts_count == 1 || (sc->stts_count == 2 && sc->stts_data[1].count == 1))
3216 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den,
3217 sc->time_scale, sc->stts_data[0].duration, INT_MAX);
3221 // done for ai5q, ai52, ai55, ai1q, ai12 and ai15.
3222 if (!st->codecpar->extradata_size && st->codecpar->codec_id == AV_CODEC_ID_H264 &&
3223 TAG_IS_AVCI(st->codecpar->codec_tag)) {
3224 ret = ff_generate_avci_extradata(st);
3229 switch (st->codecpar->codec_id) {
3230 #if CONFIG_H261_DECODER
3231 case AV_CODEC_ID_H261:
3233 #if CONFIG_H263_DECODER
3234 case AV_CODEC_ID_H263:
3236 #if CONFIG_MPEG4_DECODER
3237 case AV_CODEC_ID_MPEG4:
3239 st->codecpar->width = 0; /* let decoder init width/height */
3240 st->codecpar->height= 0;
3244 // If the duration of the mp3 packets is not constant, then they could need a parser
3245 if (st->codecpar->codec_id == AV_CODEC_ID_MP3
3246 && sc->stts_count > 3
3247 && sc->stts_count*10 > st->nb_frames
3248 && sc->time_scale == st->codecpar->sample_rate) {
3249 st->need_parsing = AVSTREAM_PARSE_FULL;
3251 /* Do not need those anymore. */
3252 av_freep(&sc->chunk_offsets);
3253 av_freep(&sc->sample_sizes);
3254 av_freep(&sc->keyframes);
3255 av_freep(&sc->stts_data);
3256 av_freep(&sc->stps_data);
3257 av_freep(&sc->elst_data);
3258 av_freep(&sc->rap_group);
3263 static int mov_read_ilst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
3266 c->itunes_metadata = 1;
3267 ret = mov_read_default(c, pb, atom);
3268 c->itunes_metadata = 0;
3272 static int mov_read_keys(MOVContext *c, AVIOContext *pb, MOVAtom atom)
3281 count = avio_rb32(pb);
3282 if (count > UINT_MAX / sizeof(*c->meta_keys) - 1) {
3283 av_log(c->fc, AV_LOG_ERROR,
3284 "The 'keys' atom with the invalid key count: %d\n", count);
3285 return AVERROR_INVALIDDATA;
3288 c->meta_keys_count = count + 1;
3289 c->meta_keys = av_mallocz(c->meta_keys_count * sizeof(*c->meta_keys));
3291 return AVERROR(ENOMEM);
3293 for (i = 1; i <= count; ++i) {
3294 uint32_t key_size = avio_rb32(pb);
3295 uint32_t type = avio_rl32(pb);
3297 av_log(c->fc, AV_LOG_ERROR,
3298 "The key# %d in meta has invalid size: %d\n", i, key_size);
3299 return AVERROR_INVALIDDATA;
3302 if (type != MKTAG('m','d','t','a')) {
3303 avio_skip(pb, key_size);
3305 c->meta_keys[i] = av_mallocz(key_size + 1);
3306 if (!c->meta_keys[i])
3307 return AVERROR(ENOMEM);
3308 avio_read(pb, c->meta_keys[i], key_size);
3314 static int mov_read_custom(MOVContext *c, AVIOContext *pb, MOVAtom atom)
3316 int64_t end = avio_tell(pb) + atom.size;
3317 uint8_t *key = NULL, *val = NULL, *mean = NULL;
3321 MOVStreamContext *sc;
3323 if (c->fc->nb_streams < 1)
3325 st = c->fc->streams[c->fc->nb_streams-1];
3328 for (i = 0; i < 3; i++) {
3332 if (end - avio_tell(pb) <= 12)
3335 len = avio_rb32(pb);
3336 tag = avio_rl32(pb);
3337 avio_skip(pb, 4); // flags
3339 if (len < 12 || len - 12 > end - avio_tell(pb))
3343 if (tag == MKTAG('m', 'e', 'a', 'n'))
3345 else if (tag == MKTAG('n', 'a', 'm', 'e'))
3347 else if (tag == MKTAG('d', 'a', 't', 'a') && len > 4) {
3354 *p = av_malloc(len + 1);
3357 ret = ffio_read_size(pb, *p, len);
3365 if (mean && key && val) {
3366 if (strcmp(key, "iTunSMPB") == 0) {
3367 int priming, remainder, samples;
3368 if(sscanf(val, "%*X %X %X %X", &priming, &remainder, &samples) == 3){
3369 if(priming>0 && priming<16384)
3370 sc->start_pad = priming;
3373 if (strcmp(key, "cdec") != 0) {
3374 av_dict_set(&c->fc->metadata, key, val,
3375 AV_DICT_DONT_STRDUP_KEY | AV_DICT_DONT_STRDUP_VAL);
3379 av_log(c->fc, AV_LOG_VERBOSE,
3380 "Unhandled or malformed custom metadata of size %"PRId64"\n", atom.size);
3383 avio_seek(pb, end, SEEK_SET);
3390 static int mov_read_meta(MOVContext *c, AVIOContext *pb, MOVAtom atom)
3392 while (atom.size > 8) {
3393 uint32_t tag = avio_rl32(pb);
3395 if (tag == MKTAG('h','d','l','r')) {
3396 avio_seek(pb, -8, SEEK_CUR);
3398 return mov_read_default(c, pb, atom);
3404 static int mov_read_tkhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
3409 int display_matrix[3][3];
3411 MOVStreamContext *sc;
3415 if (c->fc->nb_streams < 1)
3417 st = c->fc->streams[c->fc->nb_streams-1];
3420 version = avio_r8(pb);
3421 flags = avio_rb24(pb);
3422 st->disposition |= (flags & MOV_TKHD_FLAG_ENABLED) ? AV_DISPOSITION_DEFAULT : 0;
3428 avio_rb32(pb); /* creation time */
3429 avio_rb32(pb); /* modification time */
3431 st->id = (int)avio_rb32(pb); /* track id (NOT 0 !)*/
3432 avio_rb32(pb); /* reserved */
3434 /* highlevel (considering edits) duration in movie timebase */
3435 (version == 1) ? avio_rb64(pb) : avio_rb32(pb);
3436 avio_rb32(pb); /* reserved */
3437 avio_rb32(pb); /* reserved */
3439 avio_rb16(pb); /* layer */
3440 avio_rb16(pb); /* alternate group */
3441 avio_rb16(pb); /* volume */
3442 avio_rb16(pb); /* reserved */
3444 //read in the display matrix (outlined in ISO 14496-12, Section 6.2.2)
3445 // they're kept in fixed point format through all calculations
3446 // save u,v,z to store the whole matrix in the AV_PKT_DATA_DISPLAYMATRIX
3447 // side data, but the scale factor is not needed to calculate aspect ratio
3448 for (i = 0; i < 3; i++) {
3449 display_matrix[i][0] = avio_rb32(pb); // 16.16 fixed point
3450 display_matrix[i][1] = avio_rb32(pb); // 16.16 fixed point
3451 display_matrix[i][2] = avio_rb32(pb); // 2.30 fixed point
3454 width = avio_rb32(pb); // 16.16 fixed point track width
3455 height = avio_rb32(pb); // 16.16 fixed point track height
3456 sc->width = width >> 16;
3457 sc->height = height >> 16;
3459 // save the matrix and add rotate metadata when it is not the default
3461 if (display_matrix[0][0] != (1 << 16) ||
3462 display_matrix[1][1] != (1 << 16) ||
3463 display_matrix[2][2] != (1 << 30) ||
3464 display_matrix[0][1] || display_matrix[0][2] ||
3465 display_matrix[1][0] || display_matrix[1][2] ||
3466 display_matrix[2][0] || display_matrix[2][1]) {
3470 av_freep(&sc->display_matrix);
3471 sc->display_matrix = av_malloc(sizeof(int32_t) * 9);
3472 if (!sc->display_matrix)
3473 return AVERROR(ENOMEM);
3475 for (i = 0; i < 3; i++)
3476 for (j = 0; j < 3; j++)
3477 sc->display_matrix[i * 3 + j] = display_matrix[i][j];
3479 rotate = av_display_rotation_get(sc->display_matrix);
3480 if (!isnan(rotate)) {
3481 char rotate_buf[64];
3483 if (rotate < 0) // for backward compatibility
3485 snprintf(rotate_buf, sizeof(rotate_buf), "%g", rotate);
3486 av_dict_set(&st->metadata, "rotate", rotate_buf, 0);
3490 // transform the display width/height according to the matrix
3491 // to keep the same scale, use [width height 1<<16]
3492 if (width && height && sc->display_matrix) {
3493 double disp_transform[2];
3495 for (i = 0; i < 2; i++)
3496 disp_transform[i] = hypot(display_matrix[i][0], display_matrix[i][1]);
3498 if (disp_transform[0] > 0 && disp_transform[1] > 0 &&
3499 disp_transform[0] < (1<<24) && disp_transform[1] < (1<<24) &&
3500 fabs((disp_transform[0] / disp_transform[1]) - 1.0) > 0.01)
3501 st->sample_aspect_ratio = av_d2q(
3502 disp_transform[0] / disp_transform[1],
3508 static int mov_read_tfhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
3510 MOVFragment *frag = &c->fragment;
3511 MOVTrackExt *trex = NULL;
3512 MOVFragmentIndex* index = NULL;
3513 int flags, track_id, i, found = 0;
3515 avio_r8(pb); /* version */
3516 flags = avio_rb24(pb);
3518 track_id = avio_rb32(pb);
3520 return AVERROR_INVALIDDATA;
3521 frag->track_id = track_id;
3522 for (i = 0; i < c->trex_count; i++)
3523 if (c->trex_data[i].track_id == frag->track_id) {
3524 trex = &c->trex_data[i];
3528 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding trex\n");
3529 return AVERROR_INVALIDDATA;
3532 frag->base_data_offset = flags & MOV_TFHD_BASE_DATA_OFFSET ?
3533 avio_rb64(pb) : flags & MOV_TFHD_DEFAULT_BASE_IS_MOOF ?
3534 frag->moof_offset : frag->implicit_offset;
3535 frag->stsd_id = flags & MOV_TFHD_STSD_ID ? avio_rb32(pb) : trex->stsd_id;
3537 frag->duration = flags & MOV_TFHD_DEFAULT_DURATION ?
3538 avio_rb32(pb) : trex->duration;
3539 frag->size = flags & MOV_TFHD_DEFAULT_SIZE ?
3540 avio_rb32(pb) : trex->size;
3541 frag->flags = flags & MOV_TFHD_DEFAULT_FLAGS ?
3542 avio_rb32(pb) : trex->flags;
3543 frag->time = AV_NOPTS_VALUE;
3544 for (i = 0; i < c->fragment_index_count; i++) {
3546 MOVFragmentIndex* candidate = c->fragment_index_data[i];
3547 if (candidate->track_id == frag->track_id) {
3548 av_log(c->fc, AV_LOG_DEBUG,
3549 "found fragment index for track %u\n", frag->track_id);
3551 for (j = index->current_item; j < index->item_count; j++) {
3552 if (frag->implicit_offset == index->items[j].moof_offset) {
3553 av_log(c->fc, AV_LOG_DEBUG, "found fragment index entry "
3554 "for track %u and moof_offset %"PRId64"\n",
3555 frag->track_id, index->items[j].moof_offset);
3556 frag->time = index->items[j].time;
3557 index->current_item = j + 1;
3566 if (index && !found) {
3567 av_log(c->fc, AV_LOG_DEBUG, "track %u has a fragment index but "
3568 "it doesn't have an (in-order) entry for moof_offset "
3569 "%"PRId64"\n", frag->track_id, frag->implicit_offset);
3571 av_log(c->fc, AV_LOG_TRACE, "frag flags 0x%x\n", frag->flags);
3575 static int mov_read_chap(MOVContext *c, AVIOContext *pb, MOVAtom atom)
3577 c->chapter_track = avio_rb32(pb);
3581 static int mov_read_trex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
3586 if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data))
3587 return AVERROR_INVALIDDATA;
3588 if ((err = av_reallocp_array(&c->trex_data, c->trex_count + 1,
3589 sizeof(*c->trex_data))) < 0) {
3594 c->fc->duration = AV_NOPTS_VALUE; // the duration from mvhd is not representing the whole file when fragments are used.
3596 trex = &c->trex_data[c->trex_count++];
3597 avio_r8(pb); /* version */
3598 avio_rb24(pb); /* flags */
3599 trex->track_id = avio_rb32(pb);
3600 trex->stsd_id = avio_rb32(pb);
3601 trex->duration = avio_rb32(pb);
3602 trex->size = avio_rb32(pb);
3603 trex->flags = avio_rb32(pb);
3607 static int mov_read_tfdt(MOVContext *c, AVIOContext *pb, MOVAtom atom)
3609 MOVFragment *frag = &c->fragment;
3610 AVStream *st = NULL;
3611 MOVStreamContext *sc;
3614 for (i = 0; i < c->fc->nb_streams; i++) {
3615 if (c->fc->streams[i]->id == frag->track_id) {
3616 st = c->fc->streams[i];
3621 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id);
3622 return AVERROR_INVALIDDATA;
3625 if (sc->pseudo_stream_id + 1 != frag->stsd_id)
3627 version = avio_r8(pb);
3628 avio_rb24(pb); /* flags */
3630 sc->track_end = avio_rb64(pb);
3632 sc->track_end = avio_rb32(pb);
3637 static int mov_read_trun(MOVContext *c, AVIOContext *pb, MOVAtom atom)
3639 MOVFragment *frag = &c->fragment;
3640 AVStream *st = NULL;
3641 MOVStreamContext *sc;
3645 int data_offset = 0;
3646 unsigned entries, first_sample_flags = frag->flags;
3647 int flags, distance, i, err;
3649 for (i = 0; i < c->fc->nb_streams; i++) {
3650 if (c->fc->streams[i]->id == frag->track_id) {
3651 st = c->fc->streams[i];
3656 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id);
3657 return AVERROR_INVALIDDATA;
3660 if (sc->pseudo_stream_id+1 != frag->stsd_id && sc->pseudo_stream_id != -1)
3662 avio_r8(pb); /* version */
3663 flags = avio_rb24(pb);
3664 entries = avio_rb32(pb);
3665 av_log(c->fc, AV_LOG_TRACE, "flags 0x%x entries %d\n", flags, entries);
3667 /* Always assume the presence of composition time offsets.
3668 * Without this assumption, for instance, we cannot deal with a track in fragmented movies that meet the following.
3669 * 1) in the initial movie, there are no samples.
3670 * 2) in the first movie fragment, there is only one sample without composition time offset.
3671 * 3) in the subsequent movie fragments, there are samples with composition time offset. */
3672 if (!sc->ctts_count && sc->sample_count)
3674 /* Complement ctts table if moov atom doesn't have ctts atom. */
3675 ctts_data = av_realloc(NULL, sizeof(*sc->ctts_data));
3677 return AVERROR(ENOMEM);
3678 sc->ctts_data = ctts_data;
3679 sc->ctts_data[sc->ctts_count].count = sc->sample_count;
3680 sc->ctts_data[sc->ctts_count].duration = 0;
3683 if ((uint64_t)entries+sc->ctts_count >= UINT_MAX/sizeof(*sc->ctts_data))
3684 return AVERROR_INVALIDDATA;
3685 if ((err = av_reallocp_array(&sc->ctts_data, entries + sc->ctts_count,
3686 sizeof(*sc->ctts_data))) < 0) {
3690 if (flags & MOV_TRUN_DATA_OFFSET) data_offset = avio_rb32(pb);
3691 if (flags & MOV_TRUN_FIRST_SAMPLE_FLAGS) first_sample_flags = avio_rb32(pb);
3692 dts = sc->track_end - sc->time_offset;
3693 offset = frag->base_data_offset + data_offset;
3695 av_log(c->fc, AV_LOG_TRACE, "first sample flags 0x%x\n", first_sample_flags);
3696 for (i = 0; i < entries && !pb->eof_reached; i++) {
3697 unsigned sample_size = frag->size;
3698 int sample_flags = i ? frag->flags : first_sample_flags;
3699 unsigned sample_duration = frag->duration;
3702 if (flags & MOV_TRUN_SAMPLE_DURATION) sample_duration = avio_rb32(pb);
3703 if (flags & MOV_TRUN_SAMPLE_SIZE) sample_size = avio_rb32(pb);
3704 if (flags & MOV_TRUN_SAMPLE_FLAGS) sample_flags = avio_rb32(pb);
3705 sc->ctts_data[sc->ctts_count].count = 1;
3706 sc->ctts_data[sc->ctts_count].duration = (flags & MOV_TRUN_SAMPLE_CTS) ?
3708 mov_update_dts_shift(sc, sc->ctts_data[sc->ctts_count].duration);
3709 if (frag->time != AV_NOPTS_VALUE) {
3710 if (c->use_mfra_for == FF_MOV_FLAG_MFRA_PTS) {
3711 int64_t pts = frag->time;
3712 av_log(c->fc, AV_LOG_DEBUG, "found frag time %"PRId64
3713 " sc->dts_shift %d ctts.duration %d"
3714 " sc->time_offset %"PRId64" flags & MOV_TRUN_SAMPLE_CTS %d\n", pts,
3715 sc->dts_shift, sc->ctts_data[sc->ctts_count].duration,
3716 sc->time_offset, flags & MOV_TRUN_SAMPLE_CTS);
3717 dts = pts - sc->dts_shift;
3718 if (flags & MOV_TRUN_SAMPLE_CTS) {
3719 dts -= sc->ctts_data[sc->ctts_count].duration;
3721 dts -= sc->time_offset;
3723 av_log(c->fc, AV_LOG_DEBUG, "calculated into dts %"PRId64"\n", dts);
3725 dts = frag->time - sc->time_offset;
3726 av_log(c->fc, AV_LOG_DEBUG, "found frag time %"PRId64
3727 ", using it for dts\n", dts);
3729 frag->time = AV_NOPTS_VALUE;
3732 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)
3736 !(sample_flags & (MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC |
3737 MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES));
3740 err = av_add_index_entry(st, offset, dts, sample_size, distance,
3741 keyframe ? AVINDEX_KEYFRAME : 0);
3743 av_log(c->fc, AV_LOG_ERROR, "Failed to add index entry\n");
3745 av_log(c->fc, AV_LOG_TRACE, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
3746 "size %d, distance %d, keyframe %d\n", st->index, sc->sample_count+i,
3747 offset, dts, sample_size, distance, keyframe);
3749 dts += sample_duration;
3750 offset += sample_size;
3751 sc->data_size += sample_size;
3752 sc->duration_for_fps += sample_duration;
3753 sc->nb_frames_for_fps ++;
3756 if (pb->eof_reached)
3759 frag->implicit_offset = offset;
3761 sc->track_end = dts + sc->time_offset;
3762 if (st->duration < sc->track_end)
3763 st->duration = sc->track_end;
3768 static int mov_read_sidx(MOVContext *c, AVIOContext *pb, MOVAtom atom)
3770 int64_t offset = avio_tell(pb) + atom.size, pts;
3772 unsigned i, track_id;
3773 AVStream *st = NULL;
3774 MOVStreamContext *sc;
3775 MOVFragmentIndex *index = NULL;
3776 MOVFragmentIndex **tmp;
3777 AVRational timescale;
3779 version = avio_r8(pb);
3781 avpriv_request_sample(c->fc, "sidx version %u", version);
3785 avio_rb24(pb); // flags
3787 track_id = avio_rb32(pb); // Reference ID
3788 for (i = 0; i < c->fc->nb_streams; i++) {
3789 if (c->fc->streams[i]->id == track_id) {
3790 st = c->fc->streams[i];
3795 av_log(c->fc, AV_LOG_WARNING, "could not find corresponding track id %d\n", track_id);
3801 timescale = av_make_q(1, avio_rb32(pb));
3804 pts = avio_rb32(pb);
3805 offset += avio_rb32(pb);
3807 pts = avio_rb64(pb);
3808 offset += avio_rb64(pb);
3811 avio_rb16(pb); // reserved
3813 index = av_mallocz(sizeof(MOVFragmentIndex));
3815 return AVERROR(ENOMEM);
3817 index->track_id = track_id;
3819 index->item_count = avio_rb16(pb);
3820 index->items = av_mallocz_array(index->item_count, sizeof(MOVFragmentIndexItem));
3822 if (!index->items) {
3824 return AVERROR(ENOMEM);
3827 for (i = 0; i < index->item_count; i++) {
3828 uint32_t size = avio_rb32(pb);
3829 uint32_t duration = avio_rb32(pb);
3830 if (size & 0x80000000) {
3831 avpriv_request_sample(c->fc, "sidx reference_type 1");
3832 av_freep(&index->items);
3834 return AVERROR_PATCHWELCOME;
3836 avio_rb32(pb); // sap_flags
3837 index->items[i].moof_offset = offset;
3838 index->items[i].time = av_rescale_q(pts, st->time_base, timescale);
3843 st->duration = sc->track_end = pts;
3845 tmp = av_realloc_array(c->fragment_index_data,
3846 c->fragment_index_count + 1,
3847 sizeof(MOVFragmentIndex*));
3849 av_freep(&index->items);
3851 return AVERROR(ENOMEM);
3854 c->fragment_index_data = tmp;
3855 c->fragment_index_data[c->fragment_index_count++] = index;
3857 if (offset == avio_size(pb))
3858 c->fragment_index_complete = 1;
3863 /* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
3864 /* like the files created with Adobe Premiere 5.0, for samples see */
3865 /* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
3866 static int mov_read_wide(MOVContext *c, AVIOContext *pb, MOVAtom atom)
3871 return 0; /* continue */
3872 if (avio_rb32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
3873 avio_skip(pb, atom.size - 4);
3876 atom.type = avio_rl32(pb);
3878 if (atom.type != MKTAG('m','d','a','t')) {
3879 avio_skip(pb, atom.size);
3882 err = mov_read_mdat(c, pb, atom);
3886 static int mov_read_cmov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
3891 uint8_t *moov_data; /* uncompressed data */
3892 long cmov_len, moov_len;
3895 avio_rb32(pb); /* dcom atom */
3896 if (avio_rl32(pb) != MKTAG('d','c','o','m'))
3897 return AVERROR_INVALIDDATA;
3898 if (avio_rl32(pb) != MKTAG('z','l','i','b')) {
3899 av_log(c->fc, AV_LOG_ERROR, "unknown compression for cmov atom !\n");
3900 return AVERROR_INVALIDDATA;
3902 avio_rb32(pb); /* cmvd atom */
3903 if (avio_rl32(pb) != MKTAG('c','m','v','d'))
3904 return AVERROR_INVALIDDATA;
3905 moov_len = avio_rb32(pb); /* uncompressed size */
3906 cmov_len = atom.size - 6 * 4;
3908 cmov_data = av_malloc(cmov_len);
3910 return AVERROR(ENOMEM);
3911 moov_data = av_malloc(moov_len);
3914 return AVERROR(ENOMEM);
3916 ret = ffio_read_size(pb, cmov_data, cmov_len);
3918 goto free_and_return;
3920 if (uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
3921 goto free_and_return;
3922 if (ffio_init_context(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
3923 goto free_and_return;
3924 ctx.seekable = AVIO_SEEKABLE_NORMAL;
3925 atom.type = MKTAG('m','o','o','v');
3926 atom.size = moov_len;
3927 ret = mov_read_default(c, &ctx, atom);
3933 av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
3934 return AVERROR(ENOSYS);
3938 /* edit list atom */
3939 static int mov_read_elst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
3941 MOVStreamContext *sc;
3942 int i, edit_count, version;
3944 if (c->fc->nb_streams < 1 || c->ignore_editlist)
3946 sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
3948 version = avio_r8(pb); /* version */
3949 avio_rb24(pb); /* flags */
3950 edit_count = avio_rb32(pb); /* entries */
3955 av_log(c->fc, AV_LOG_WARNING, "Duplicated ELST atom\n");
3956 av_free(sc->elst_data);
3958 sc->elst_data = av_malloc_array(edit_count, sizeof(*sc->elst_data));
3960 return AVERROR(ENOMEM);
3962 av_log(c->fc, AV_LOG_TRACE, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, edit_count);
3963 for (i = 0; i < edit_count && !pb->eof_reached; i++) {
3964 MOVElst *e = &sc->elst_data[i];
3967 e->duration = avio_rb64(pb);
3968 e->time = avio_rb64(pb);
3970 e->duration = avio_rb32(pb); /* segment duration */
3971 e->time = (int32_t)avio_rb32(pb); /* media time */
3973 e->rate = avio_rb32(pb) / 65536.0;
3974 av_log(c->fc, AV_LOG_TRACE, "duration=%"PRId64" time=%"PRId64" rate=%f\n",
3975 e->duration, e->time, e->rate);
3982 static int mov_read_tmcd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
3984 MOVStreamContext *sc;
3986 if (c->fc->nb_streams < 1)
3987 return AVERROR_INVALIDDATA;
3988 sc = c->fc->streams[c->fc->nb_streams - 1]->priv_data;
3989 sc->timecode_track = avio_rb32(pb);
3993 static int mov_read_uuid(MOVContext *c, AVIOContext *pb, MOVAtom atom)
3997 static const uint8_t uuid_isml_manifest[] = {
3998 0xa5, 0xd4, 0x0b, 0x30, 0xe8, 0x14, 0x11, 0xdd,
3999 0xba, 0x2f, 0x08, 0x00, 0x20, 0x0c, 0x9a, 0x66
4001 static const uint8_t uuid_xmp[] = {
4002 0xbe, 0x7a, 0xcf, 0xcb, 0x97, 0xa9, 0x42, 0xe8,
4003 0x9c, 0x71, 0x99, 0x94, 0x91, 0xe3, 0xaf, 0xac
4006 if (atom.size < sizeof(uuid) || atom.size == INT64_MAX)
4007 return AVERROR_INVALIDDATA;
4009 ret = avio_read(pb, uuid, sizeof(uuid));
4012 } else if (ret != sizeof(uuid)) {
4013 return AVERROR_INVALIDDATA;
4015 if (!memcmp(uuid, uuid_isml_manifest, sizeof(uuid))) {
4016 uint8_t *buffer, *ptr;
4018 size_t len = atom.size - sizeof(uuid);
4021 return AVERROR_INVALIDDATA;
4023 ret = avio_skip(pb, 4); // zeroes
4026 buffer = av_mallocz(len + 1);
4028 return AVERROR(ENOMEM);
4030 ret = avio_read(pb, buffer, len);
4034 } else if (ret != len) {
4036 return AVERROR_INVALIDDATA;
4040 while ((ptr = av_stristr(ptr, "systemBitrate=\""))) {
4041 ptr += sizeof("systemBitrate=\"") - 1;
4042 c->bitrates_count++;
4043 c->bitrates = av_realloc_f(c->bitrates, c->bitrates_count, sizeof(*c->bitrates));
4045 c->bitrates_count = 0;
4047 return AVERROR(ENOMEM);
4050 ret = strtol(ptr, &endptr, 10);
4051 if (ret < 0 || errno || *endptr != '"') {
4052 c->bitrates[c->bitrates_count - 1] = 0;
4054 c->bitrates[c->bitrates_count - 1] = ret;
4059 } else if (!memcmp(uuid, uuid_xmp, sizeof(uuid))) {
4061 size_t len = atom.size - sizeof(uuid);
4063 buffer = av_mallocz(len + 1);
4065 return AVERROR(ENOMEM);
4067 ret = avio_read(pb, buffer, len);
4071 } else if (ret != len) {
4073 return AVERROR_INVALIDDATA;
4075 if (c->export_xmp) {
4077 av_dict_set(&c->fc->metadata, "xmp", buffer, 0);
4084 static int mov_read_free(MOVContext *c, AVIOContext *pb, MOVAtom atom)
4087 uint8_t content[16];
4092 ret = avio_read(pb, content, FFMIN(sizeof(content), atom.size));
4098 && !memcmp(content, "Anevia\x1A\x1A", 8)
4099 && c->use_mfra_for == FF_MOV_FLAG_MFRA_AUTO) {
4100 c->use_mfra_for = FF_MOV_FLAG_MFRA_PTS;
4106 static int mov_read_frma(MOVContext *c, AVIOContext *pb, MOVAtom atom)
4108 uint32_t format = avio_rl32(pb);
4109 MOVStreamContext *sc;
4113 if (c->fc->nb_streams < 1)
4115 st = c->fc->streams[c->fc->nb_streams - 1];
4120 case MKTAG('e','n','c','v'): // encrypted video
4121 case MKTAG('e','n','c','a'): // encrypted audio
4122 id = mov_codec_id(st, format);
4123 if (st->codecpar->codec_id != AV_CODEC_ID_NONE &&
4124 st->codecpar->codec_id != id) {
4125 av_log(c->fc, AV_LOG_WARNING,
4126 "ignoring 'frma' atom of '%.4s', stream has codec id %d\n",
4127 (char*)&format, st->codecpar->codec_id);
4131 st->codecpar->codec_id = id;
4132 sc->format = format;
4136 if (format != sc->format) {
4137 av_log(c->fc, AV_LOG_WARNING,
4138 "ignoring 'frma' atom of '%.4s', stream format is '%.4s'\n",
4139 (char*)&format, (char*)&sc->format);
4147 static int mov_read_senc(MOVContext *c, AVIOContext *pb, MOVAtom atom)
4150 MOVStreamContext *sc;
4151 size_t auxiliary_info_size;
4153 if (c->decryption_key_len == 0 || c->fc->nb_streams < 1)
4156 st = c->fc->streams[c->fc->nb_streams - 1];
4159 if (sc->cenc.aes_ctr) {
4160 av_log(c->fc, AV_LOG_ERROR, "duplicate senc atom\n");
4161 return AVERROR_INVALIDDATA;
4164 avio_r8(pb); /* version */
4165 sc->cenc.use_subsamples = avio_rb24(pb) & 0x02; /* flags */
4167 avio_rb32(pb); /* entries */
4169 if (atom.size < 8) {
4170 av_log(c->fc, AV_LOG_ERROR, "senc atom size %"PRId64" too small\n", atom.size);
4171 return AVERROR_INVALIDDATA;
4174 /* save the auxiliary info as is */
4175 auxiliary_info_size = atom.size - 8;
4177 sc->cenc.auxiliary_info = av_malloc(auxiliary_info_size);
4178 if (!sc->cenc.auxiliary_info) {
4179 return AVERROR(ENOMEM);
4182 sc->cenc.auxiliary_info_end = sc->cenc.auxiliary_info + auxiliary_info_size;
4184 sc->cenc.auxiliary_info_pos = sc->cenc.auxiliary_info;
4186 if (avio_read(pb, sc->cenc.auxiliary_info, auxiliary_info_size) != auxiliary_info_size) {
4187 av_log(c->fc, AV_LOG_ERROR, "failed to read the auxiliary info");
4188 return AVERROR_INVALIDDATA;
4191 /* initialize the cipher */
4192 sc->cenc.aes_ctr = av_aes_ctr_alloc();
4193 if (!sc->cenc.aes_ctr) {
4194 return AVERROR(ENOMEM);
4197 return av_aes_ctr_init(sc->cenc.aes_ctr, c->decryption_key);
4200 static int mov_read_saiz(MOVContext *c, AVIOContext *pb, MOVAtom atom)
4203 MOVStreamContext *sc;
4205 int atom_header_size;
4208 if (c->decryption_key_len == 0 || c->fc->nb_streams < 1)
4211 st = c->fc->streams[c->fc->nb_streams - 1];
4214 if (sc->cenc.auxiliary_info_sizes || sc->cenc.auxiliary_info_default_size) {
4215 av_log(c->fc, AV_LOG_ERROR, "duplicate saiz atom\n");
4216 return AVERROR_INVALIDDATA;
4219 atom_header_size = 9;
4221 avio_r8(pb); /* version */
4222 flags = avio_rb24(pb);
4224 if ((flags & 0x01) != 0) {
4225 atom_header_size += 8;
4227 avio_rb32(pb); /* info type */
4228 avio_rb32(pb); /* info type param */
4231 sc->cenc.auxiliary_info_default_size = avio_r8(pb);
4232 avio_rb32(pb); /* entries */
4234 if (atom.size <= atom_header_size) {
4238 /* save the auxiliary info sizes as is */
4239 data_size = atom.size - atom_header_size;
4241 sc->cenc.auxiliary_info_sizes = av_malloc(data_size);
4242 if (!sc->cenc.auxiliary_info_sizes) {
4243 return AVERROR(ENOMEM);
4246 sc->cenc.auxiliary_info_sizes_count = data_size;
4248 if (avio_read(pb, sc->cenc.auxiliary_info_sizes, data_size) != data_size) {
4249 av_log(c->fc, AV_LOG_ERROR, "failed to read the auxiliary info sizes");
4250 return AVERROR_INVALIDDATA;
4256 static int cenc_filter(MOVContext *c, MOVStreamContext *sc, uint8_t *input, int size)
4258 uint32_t encrypted_bytes;
4259 uint16_t subsample_count;
4260 uint16_t clear_bytes;
4261 uint8_t* input_end = input + size;
4264 if (AES_CTR_IV_SIZE > sc->cenc.auxiliary_info_end - sc->cenc.auxiliary_info_pos) {
4265 av_log(c->fc, AV_LOG_ERROR, "failed to read iv from the auxiliary info\n");
4266 return AVERROR_INVALIDDATA;
4269 av_aes_ctr_set_iv(sc->cenc.aes_ctr, sc->cenc.auxiliary_info_pos);
4270 sc->cenc.auxiliary_info_pos += AES_CTR_IV_SIZE;
4272 if (!sc->cenc.use_subsamples)
4274 /* decrypt the whole packet */
4275 av_aes_ctr_crypt(sc->cenc.aes_ctr, input, input, size);
4279 /* read the subsample count */
4280 if (sizeof(uint16_t) > sc->cenc.auxiliary_info_end - sc->cenc.auxiliary_info_pos) {
4281 av_log(c->fc, AV_LOG_ERROR, "failed to read subsample count from the auxiliary info\n");
4282 return AVERROR_INVALIDDATA;
4285 subsample_count = AV_RB16(sc->cenc.auxiliary_info_pos);
4286 sc->cenc.auxiliary_info_pos += sizeof(uint16_t);
4288 for (; subsample_count > 0; subsample_count--)
4290 if (6 > sc->cenc.auxiliary_info_end - sc->cenc.auxiliary_info_pos) {
4291 av_log(c->fc, AV_LOG_ERROR, "failed to read subsample from the auxiliary info\n");
4292 return AVERROR_INVALIDDATA;
4295 /* read the number of clear / encrypted bytes */
4296 clear_bytes = AV_RB16(sc->cenc.auxiliary_info_pos);
4297 sc->cenc.auxiliary_info_pos += sizeof(uint16_t);
4298 encrypted_bytes = AV_RB32(sc->cenc.auxiliary_info_pos);
4299 sc->cenc.auxiliary_info_pos += sizeof(uint32_t);
4301 if ((uint64_t)clear_bytes + encrypted_bytes > input_end - input) {
4302 av_log(c->fc, AV_LOG_ERROR, "subsample size exceeds the packet size left\n");
4303 return AVERROR_INVALIDDATA;
4306 /* skip the clear bytes */
4307 input += clear_bytes;
4309 /* decrypt the encrypted bytes */
4310 av_aes_ctr_crypt(sc->cenc.aes_ctr, input, input, encrypted_bytes);
4311 input += encrypted_bytes;
4314 if (input < input_end) {
4315 av_log(c->fc, AV_LOG_ERROR, "leftover packet bytes after subsample processing\n");
4316 return AVERROR_INVALIDDATA;
4322 static int mov_seek_auxiliary_info(AVFormatContext *s, MOVStreamContext *sc)
4324 size_t auxiliary_info_seek_offset = 0;
4327 if (sc->cenc.auxiliary_info_default_size) {
4328 auxiliary_info_seek_offset = (size_t)sc->cenc.auxiliary_info_default_size * sc->current_sample;
4329 } else if (sc->cenc.auxiliary_info_sizes) {
4330 if (sc->current_sample > sc->cenc.auxiliary_info_sizes_count) {
4331 av_log(s, AV_LOG_ERROR, "current sample %d greater than the number of auxiliary info sample sizes %"SIZE_SPECIFIER"\n",
4332 sc->current_sample, sc->cenc.auxiliary_info_sizes_count);
4333 return AVERROR_INVALIDDATA;
4336 for (i = 0; i < sc->current_sample; i++) {