mov: fill in subtitle dimensions after parsing tkhd
[libav.git] / libavformat / mov.c
CommitLineData
6cea494e 1/*
7fbde343 2 * MOV demuxer
406792e7 3 * Copyright (c) 2001 Fabrice Bellard
7c4502c8 4 * Copyright (c) 2009 Baptiste Coudurier <baptiste dot coudurier at gmail dot com>
6cea494e 5 *
ac9362c5
DB
6 * first version by Francois Revol <revol@free.fr>
7 * seek function by Gael Chardon <gael.dev@4now.net>
8 *
2912e87a 9 * This file is part of Libav.
b78e7197 10 *
2912e87a 11 * Libav is free software; you can redistribute it and/or
19720f15
FB
12 * modify it under the terms of the GNU Lesser General Public
13 * License as published by the Free Software Foundation; either
b78e7197 14 * version 2.1 of the License, or (at your option) any later version.
6cea494e 15 *
2912e87a 16 * Libav is distributed in the hope that it will be useful,
6cea494e 17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19720f15
FB
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * Lesser General Public License for more details.
6cea494e 20 *
19720f15 21 * You should have received a copy of the GNU Lesser General Public
2912e87a 22 * License along with Libav; if not, write to the Free Software
5509bffa 23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
6cea494e 24 */
d957696f 25
d92024f1 26#include <inttypes.h>
d957696f 27#include <limits.h>
8f8bc923 28#include <stdint.h>
115329f1 29
873358e5 30//#define MOV_EXPORT_ALL_METADATA
4e5ef14f 31
30b1961c 32#include "libavutil/attributes.h"
a903f8f0 33#include "libavutil/channel_layout.h"
6a5d31ac 34#include "libavutil/intreadwrite.h"
3383a53e 35#include "libavutil/intfloat.h"
0ebcdf5c 36#include "libavutil/mathematics.h"
49674dd0 37#include "libavutil/avstring.h"
d2d67e42 38#include "libavutil/dict.h"
3798205a 39#include "libavcodec/ac3tab.h"
6cea494e 40#include "avformat.h"
c3f9ebf7 41#include "internal.h"
e731b8d8 42#include "avio_internal.h"
9d9f4119 43#include "riff.h"
e40ee6a2 44#include "isom.h"
9106a698 45#include "libavcodec/get_bits.h"
94395fbf 46#include "id3v1.h"
1fdf18f4 47#include "mov_chan.h"
6cea494e 48
b250f9c6 49#if CONFIG_ZLIB
0147f198
FR
50#include <zlib.h>
51#endif
52
b595afaa
MM
53#include "qtpalette.h"
54
baf25c9d 55
cd7352d5
MN
56#undef NDEBUG
57#include <assert.h>
58
6cea494e 59/* those functions parse an atom */
6cea494e
ZK
60/* links atom IDs to parse functions */
61typedef struct MOVParseTableEntry {
0c1a9eda 62 uint32_t type;
ae628ec1 63 int (*parse)(MOVContext *ctx, AVIOContext *pb, MOVAtom atom);
6cea494e
ZK
64} MOVParseTableEntry;
65
1ce1e636 66static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom);
73d07c27 67
dff41775
RH
68static int mov_metadata_track_or_disc_number(MOVContext *c, AVIOContext *pb,
69 unsigned len, const char *key)
c6026e43
BC
70{
71 char buf[16];
72
fbcaceb1 73 short current, total = 0;
b7effd4e 74 avio_rb16(pb); // unknown
dff41775 75 current = avio_rb16(pb);
fbcaceb1
CEH
76 if (len >= 6)
77 total = avio_rb16(pb);
dff41775
RH
78 if (!total)
79 snprintf(buf, sizeof(buf), "%d", current);
80 else
81 snprintf(buf, sizeof(buf), "%d/%d", current, total);
82 av_dict_set(&c->fc->metadata, key, buf, 0);
c6026e43
BC
83
84 return 0;
85}
86
80951f5c
RH
87static int mov_metadata_int8_bypass_padding(MOVContext *c, AVIOContext *pb,
88 unsigned len, const char *key)
f0556353 89{
80951f5c 90 char buf[16];
f0556353 91
80951f5c
RH
92 /* bypass padding bytes */
93 avio_r8(pb);
94 avio_r8(pb);
95 avio_r8(pb);
f0556353 96
028a2375 97 snprintf(buf, sizeof(buf), "%d", avio_r8(pb));
80951f5c 98 av_dict_set(&c->fc->metadata, key, buf, 0);
f0556353 99
80951f5c 100 return 0;
f0556353
RH
101}
102
5da35d1c
RH
103static int mov_metadata_int8_no_padding(MOVContext *c, AVIOContext *pb,
104 unsigned len, const char *key)
f0556353 105{
5da35d1c 106 char buf[16];
f0556353 107
028a2375 108 snprintf(buf, sizeof(buf), "%d", avio_r8(pb));
5da35d1c 109 av_dict_set(&c->fc->metadata, key, buf, 0);
f0556353 110
5da35d1c 111 return 0;
f0556353
RH
112}
113
94395fbf
RH
114static int mov_metadata_gnre(MOVContext *c, AVIOContext *pb,
115 unsigned len, const char *key)
116{
117 short genre;
118 char buf[20];
119
120 avio_r8(pb); // unknown
121
122 genre = avio_r8(pb);
123 if (genre < 1 || genre > ID3v1_GENRE_MAX)
124 return 0;
125 snprintf(buf, sizeof(buf), "%s", ff_id3v1_genre_str[genre-1]);
126 av_dict_set(&c->fc->metadata, key, buf, 0);
127
128 return 0;
129}
130
08a186c6
BC
131static const uint32_t mac_to_unicode[128] = {
132 0x00C4,0x00C5,0x00C7,0x00C9,0x00D1,0x00D6,0x00DC,0x00E1,
133 0x00E0,0x00E2,0x00E4,0x00E3,0x00E5,0x00E7,0x00E9,0x00E8,
134 0x00EA,0x00EB,0x00ED,0x00EC,0x00EE,0x00EF,0x00F1,0x00F3,
135 0x00F2,0x00F4,0x00F6,0x00F5,0x00FA,0x00F9,0x00FB,0x00FC,
136 0x2020,0x00B0,0x00A2,0x00A3,0x00A7,0x2022,0x00B6,0x00DF,
137 0x00AE,0x00A9,0x2122,0x00B4,0x00A8,0x2260,0x00C6,0x00D8,
138 0x221E,0x00B1,0x2264,0x2265,0x00A5,0x00B5,0x2202,0x2211,
139 0x220F,0x03C0,0x222B,0x00AA,0x00BA,0x03A9,0x00E6,0x00F8,
140 0x00BF,0x00A1,0x00AC,0x221A,0x0192,0x2248,0x2206,0x00AB,
141 0x00BB,0x2026,0x00A0,0x00C0,0x00C3,0x00D5,0x0152,0x0153,
142 0x2013,0x2014,0x201C,0x201D,0x2018,0x2019,0x00F7,0x25CA,
143 0x00FF,0x0178,0x2044,0x20AC,0x2039,0x203A,0xFB01,0xFB02,
144 0x2021,0x00B7,0x201A,0x201E,0x2030,0x00C2,0x00CA,0x00C1,
145 0x00CB,0x00C8,0x00CD,0x00CE,0x00CF,0x00CC,0x00D3,0x00D4,
146 0xF8FF,0x00D2,0x00DA,0x00DB,0x00D9,0x0131,0x02C6,0x02DC,
147 0x00AF,0x02D8,0x02D9,0x02DA,0x00B8,0x02DD,0x02DB,0x02C7,
148};
149
ae628ec1 150static int mov_read_mac_string(MOVContext *c, AVIOContext *pb, int len,
08a186c6
BC
151 char *dst, int dstlen)
152{
153 char *p = dst;
154 char *end = dst+dstlen-1;
155 int i;
156
157 for (i = 0; i < len; i++) {
b7effd4e 158 uint8_t t, c = avio_r8(pb);
08a186c6
BC
159 if (c < 0x80 && p < end)
160 *p++ = c;
161 else
162 PUT_UTF8(mac_to_unicode[c-0x80], t, if (p < end) *p++ = t;);
163 }
164 *p = 0;
165 return p - dst;
166}
167
a02b8c69
AK
168static int mov_read_covr(MOVContext *c, AVIOContext *pb, int type, int len)
169{
170 AVPacket pkt;
171 AVStream *st;
172 MOVStreamContext *sc;
36ef5369 173 enum AVCodecID id;
a02b8c69
AK
174 int ret;
175
176 switch (type) {
36ef5369
AK
177 case 0xd: id = AV_CODEC_ID_MJPEG; break;
178 case 0xe: id = AV_CODEC_ID_PNG; break;
179 case 0x1b: id = AV_CODEC_ID_BMP; break;
a02b8c69
AK
180 default:
181 av_log(c->fc, AV_LOG_WARNING, "Unknown cover type: 0x%x.\n", type);
182 avio_skip(pb, len);
183 return 0;
184 }
185
186 st = avformat_new_stream(c->fc, NULL);
187 if (!st)
188 return AVERROR(ENOMEM);
189 sc = av_mallocz(sizeof(*sc));
190 if (!sc)
191 return AVERROR(ENOMEM);
192 st->priv_data = sc;
193
194 ret = av_get_packet(pb, &pkt, len);
195 if (ret < 0)
196 return ret;
197
198 st->disposition |= AV_DISPOSITION_ATTACHED_PIC;
199
200 st->attached_pic = pkt;
201 st->attached_pic.stream_index = st->index;
202 st->attached_pic.flags |= AV_PKT_FLAG_KEY;
203
204 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
205 st->codec->codec_id = id;
206
207 return 0;
208}
209
ae628ec1 210static int mov_read_udta_string(MOVContext *c, AVIOContext *pb, MOVAtom atom)
0fb44a4e
BC
211{
212#ifdef MOV_EXPORT_ALL_METADATA
213 char tmp_key[5];
214#endif
215 char str[1024], key2[16], language[4] = {0};
216 const char *key = NULL;
a7b8ff94
AK
217 uint16_t langcode = 0;
218 uint32_t data_type = 0, str_size;
dff41775 219 int (*parse)(MOVContext*, AVIOContext*, unsigned, const char*) = NULL;
0fb44a4e
BC
220
221 switch (atom.type) {
222 case MKTAG(0xa9,'n','a','m'): key = "title"; break;
223 case MKTAG(0xa9,'a','u','t'):
ea4c4d7f 224 case MKTAG(0xa9,'A','R','T'): key = "artist"; break;
2804d320 225 case MKTAG( 'a','A','R','T'): key = "album_artist"; break;
55d2e32a 226 case MKTAG(0xa9,'w','r','t'): key = "composer"; break;
b9c78bca 227 case MKTAG( 'c','p','r','t'):
0fb44a4e
BC
228 case MKTAG(0xa9,'c','p','y'): key = "copyright"; break;
229 case MKTAG(0xa9,'c','m','t'):
230 case MKTAG(0xa9,'i','n','f'): key = "comment"; break;
231 case MKTAG(0xa9,'a','l','b'): key = "album"; break;
ca76a119 232 case MKTAG(0xa9,'d','a','y'): key = "date"; break;
0fb44a4e 233 case MKTAG(0xa9,'g','e','n'): key = "genre"; break;
94395fbf
RH
234 case MKTAG( 'g','n','r','e'): key = "genre";
235 parse = mov_metadata_gnre; break;
0fb44a4e 236 case MKTAG(0xa9,'t','o','o'):
2b91d83e 237 case MKTAG(0xa9,'s','w','r'): key = "encoder"; break;
a4cb56aa 238 case MKTAG(0xa9,'e','n','c'): key = "encoder"; break;
7382902b
DC
239 case MKTAG( 'd','e','s','c'): key = "description";break;
240 case MKTAG( 'l','d','e','s'): key = "synopsis"; break;
241 case MKTAG( 't','v','s','h'): key = "show"; break;
242 case MKTAG( 't','v','e','n'): key = "episode_id";break;
243 case MKTAG( 't','v','n','n'): key = "network"; break;
c6026e43 244 case MKTAG( 't','r','k','n'): key = "track";
dff41775
RH
245 parse = mov_metadata_track_or_disc_number; break;
246 case MKTAG( 'd','i','s','k'): key = "disc";
247 parse = mov_metadata_track_or_disc_number; break;
f0556353 248 case MKTAG( 't','v','e','s'): key = "episode_sort";
80951f5c 249 parse = mov_metadata_int8_bypass_padding; break;
f0556353 250 case MKTAG( 't','v','s','n'): key = "season_number";
80951f5c 251 parse = mov_metadata_int8_bypass_padding; break;
f0556353 252 case MKTAG( 's','t','i','k'): key = "media_type";
5da35d1c 253 parse = mov_metadata_int8_no_padding; break;
b06df707
RH
254 case MKTAG( 'h','d','v','d'): key = "hd_video";
255 parse = mov_metadata_int8_no_padding; break;
256 case MKTAG( 'p','g','a','p'): key = "gapless_playback";
257 parse = mov_metadata_int8_no_padding; break;
0fb44a4e
BC
258 }
259
260 if (c->itunes_metadata && atom.size > 8) {
b7effd4e
AK
261 int data_size = avio_rb32(pb);
262 int tag = avio_rl32(pb);
0fb44a4e 263 if (tag == MKTAG('d','a','t','a')) {
b7effd4e
AK
264 data_type = avio_rb32(pb); // type
265 avio_rb32(pb); // unknown
0fb44a4e
BC
266 str_size = data_size - 16;
267 atom.size -= 16;
a02b8c69
AK
268
269 if (atom.type == MKTAG('c', 'o', 'v', 'r')) {
270 int ret = mov_read_covr(c, pb, data_type, str_size);
271 if (ret < 0) {
272 av_log(c->fc, AV_LOG_ERROR, "Error parsing cover art.\n");
273 return ret;
274 }
275 }
0fb44a4e
BC
276 } else return 0;
277 } else if (atom.size > 4 && key && !c->itunes_metadata) {
b7effd4e
AK
278 str_size = avio_rb16(pb); // string length
279 langcode = avio_rb16(pb);
08a186c6 280 ff_mov_lang_to_iso639(langcode, language);
0fb44a4e
BC
281 atom.size -= 4;
282 } else
283 str_size = atom.size;
284
285#ifdef MOV_EXPORT_ALL_METADATA
286 if (!key) {
287 snprintf(tmp_key, 5, "%.4s", (char*)&atom.type);
288 key = tmp_key;
289 }
290#endif
291
292 if (!key)
293 return 0;
294 if (atom.size < 0)
bcd5d979 295 return AVERROR_INVALIDDATA;
0fb44a4e
BC
296
297 str_size = FFMIN3(sizeof(str)-1, str_size, atom.size);
c6026e43
BC
298
299 if (parse)
dff41775 300 parse(c, pb, str_size, key);
c6026e43 301 else {
9e71cc81 302 if (data_type == 3 || (data_type == 0 && (langcode < 0x400 || langcode == 0x7fff))) { // MAC Encoded
08a186c6
BC
303 mov_read_mac_string(c, pb, str_size, str, sizeof(str));
304 } else {
b7effd4e 305 avio_read(pb, str, str_size);
08a186c6
BC
306 str[str_size] = 0;
307 }
d2d67e42 308 av_dict_set(&c->fc->metadata, key, str, 0);
f584386d
BC
309 if (*language && strcmp(language, "und")) {
310 snprintf(key2, sizeof(key2), "%s-%s", key, language);
d2d67e42 311 av_dict_set(&c->fc->metadata, key2, str, 0);
f584386d 312 }
c6026e43 313 }
02a8d43a
DB
314 av_dlog(c->fc, "lang \"%3s\" ", language);
315 av_dlog(c->fc, "tag \"%s\" value \"%s\" atom \"%.4s\" %d %"PRId64"\n",
316 key, str, (char*)&atom.type, str_size, atom.size);
0fb44a4e
BC
317
318 return 0;
319}
873358e5 320
ae628ec1 321static int mov_read_chpl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1cf9f6ed
DC
322{
323 int64_t start;
105b3785 324 int i, nb_chapters, str_len, version;
1cf9f6ed
DC
325 char str[256+1];
326
327 if ((atom.size -= 5) < 0)
328 return 0;
329
b7effd4e
AK
330 version = avio_r8(pb);
331 avio_rb24(pb);
105b3785 332 if (version)
b7effd4e
AK
333 avio_rb32(pb); // ???
334 nb_chapters = avio_r8(pb);
1cf9f6ed
DC
335
336 for (i = 0; i < nb_chapters; i++) {
337 if (atom.size < 9)
338 return 0;
339
b7effd4e
AK
340 start = avio_rb64(pb);
341 str_len = avio_r8(pb);
1cf9f6ed
DC
342
343 if ((atom.size -= 9+str_len) < 0)
344 return 0;
345
b7effd4e 346 avio_read(pb, str, str_len);
1cf9f6ed 347 str[str_len] = 0;
1fa395e4 348 avpriv_new_chapter(c->fc, i, (AVRational){1,10000000}, start, AV_NOPTS_VALUE, str);
1cf9f6ed
DC
349 }
350 return 0;
351}
352
8cc2fa1e 353#define MIN_DATA_ENTRY_BOX_SIZE 12
ae628ec1 354static int mov_read_dref(MOVContext *c, AVIOContext *pb, MOVAtom atom)
221e21b7 355{
6a63ff19
BC
356 AVStream *st;
357 MOVStreamContext *sc;
221e21b7
BC
358 int entries, i, j;
359
6a63ff19
BC
360 if (c->fc->nb_streams < 1)
361 return 0;
362 st = c->fc->streams[c->fc->nb_streams-1];
363 sc = st->priv_data;
364
b7effd4e
AK
365 avio_rb32(pb); // version + flags
366 entries = avio_rb32(pb);
8cc2fa1e
JG
367 if (entries > (atom.size - 1) / MIN_DATA_ENTRY_BOX_SIZE + 1 ||
368 entries >= UINT_MAX / sizeof(*sc->drefs))
bcd5d979 369 return AVERROR_INVALIDDATA;
4ebd422c 370 av_free(sc->drefs);
221e21b7 371 sc->drefs = av_mallocz(entries * sizeof(*sc->drefs));
0d8f0abf
BC
372 if (!sc->drefs)
373 return AVERROR(ENOMEM);
374 sc->drefs_count = entries;
221e21b7
BC
375
376 for (i = 0; i < sc->drefs_count; i++) {
c3e92a6c 377 MOVDref *dref = &sc->drefs[i];
b7effd4e 378 uint32_t size = avio_rb32(pb);
a2704c97 379 int64_t next = avio_tell(pb) + size - 4;
221e21b7 380
0e7d436d 381 if (size < 12)
bcd5d979 382 return AVERROR_INVALIDDATA;
0e7d436d 383
b7effd4e
AK
384 dref->type = avio_rl32(pb);
385 avio_rb32(pb); // version + flags
dfd2a005 386 av_dlog(c->fc, "type %.4s size %d\n", (char*)&dref->type, size);
221e21b7
BC
387
388 if (dref->type == MKTAG('a','l','i','s') && size > 150) {
389 /* macintosh alias record */
390 uint16_t volume_len, len;
221e21b7
BC
391 int16_t type;
392
45a8a02a 393 avio_skip(pb, 10);
221e21b7 394
b7effd4e 395 volume_len = avio_r8(pb);
221e21b7 396 volume_len = FFMIN(volume_len, 27);
b7effd4e 397 avio_read(pb, dref->volume, 27);
adeb9071
BC
398 dref->volume[volume_len] = 0;
399 av_log(c->fc, AV_LOG_DEBUG, "volume %s, len %d\n", dref->volume, volume_len);
221e21b7 400
45a8a02a 401 avio_skip(pb, 12);
adeb9071 402
b7effd4e 403 len = avio_r8(pb);
adeb9071 404 len = FFMIN(len, 63);
b7effd4e 405 avio_read(pb, dref->filename, 63);
adeb9071
BC
406 dref->filename[len] = 0;
407 av_log(c->fc, AV_LOG_DEBUG, "filename %s, len %d\n", dref->filename, len);
408
45a8a02a 409 avio_skip(pb, 16);
adeb9071
BC
410
411 /* read next level up_from_alias/down_to_target */
b7effd4e
AK
412 dref->nlvl_from = avio_rb16(pb);
413 dref->nlvl_to = avio_rb16(pb);
adeb9071
BC
414 av_log(c->fc, AV_LOG_DEBUG, "nlvl from %d, nlvl to %d\n",
415 dref->nlvl_from, dref->nlvl_to);
416
45a8a02a 417 avio_skip(pb, 16);
221e21b7 418
a2704c97 419 for (type = 0; type != -1 && avio_tell(pb) < next; ) {
9db67bed
MN
420 if (pb->eof_reached)
421 return AVERROR_EOF;
b7effd4e
AK
422 type = avio_rb16(pb);
423 len = avio_rb16(pb);
221e21b7
BC
424 av_log(c->fc, AV_LOG_DEBUG, "type %d, len %d\n", type, len);
425 if (len&1)
426 len += 1;
427 if (type == 2) { // absolute path
dbb37657 428 av_free(dref->path);
221e21b7 429 dref->path = av_mallocz(len+1);
2f4568e5
BC
430 if (!dref->path)
431 return AVERROR(ENOMEM);
b7effd4e 432 avio_read(pb, dref->path, len);
adeb9071 433 if (len > volume_len && !strncmp(dref->path, dref->volume, volume_len)) {
221e21b7
BC
434 len -= volume_len;
435 memmove(dref->path, dref->path+volume_len, len);
436 dref->path[len] = 0;
437 }
438 for (j = 0; j < len; j++)
439 if (dref->path[j] == ':')
440 dref->path[j] = '/';
441 av_log(c->fc, AV_LOG_DEBUG, "path %s\n", dref->path);
adeb9071
BC
442 } else if (type == 0) { // directory name
443 av_free(dref->dir);
444 dref->dir = av_malloc(len+1);
445 if (!dref->dir)
446 return AVERROR(ENOMEM);
b7effd4e 447 avio_read(pb, dref->dir, len);
adeb9071
BC
448 dref->dir[len] = 0;
449 for (j = 0; j < len; j++)
450 if (dref->dir[j] == ':')
451 dref->dir[j] = '/';
452 av_log(c->fc, AV_LOG_DEBUG, "dir %s\n", dref->dir);
221e21b7 453 } else
45a8a02a 454 avio_skip(pb, len);
221e21b7
BC
455 }
456 }
6b4aa5da 457 avio_seek(pb, next, SEEK_SET);
221e21b7
BC
458 }
459 return 0;
460}
461
ae628ec1 462static int mov_read_hdlr(MOVContext *c, AVIOContext *pb, MOVAtom atom)
6cea494e 463{
fefe43ff 464 AVStream *st;
0c1a9eda 465 uint32_t type;
5e1166b3 466 uint32_t av_unused ctype;
b6a17df4 467
fefe43ff
AC
468 if (c->fc->nb_streams < 1) // meta before first trak
469 return 0;
470
471 st = c->fc->streams[c->fc->nb_streams-1];
472
b7effd4e
AK
473 avio_r8(pb); /* version */
474 avio_rb24(pb); /* flags */
6cea494e
ZK
475
476 /* component type */
b7effd4e
AK
477 ctype = avio_rl32(pb);
478 type = avio_rl32(pb); /* component subtype */
6cea494e 479
dfd2a005
LB
480 av_dlog(c->fc, "ctype= %.4s (0x%08x)\n", (char*)&ctype, ctype);
481 av_dlog(c->fc, "stype= %.4s\n", (char*)&type);
2229a5c6 482
37ffe34b 483 if (type == MKTAG('v','i','d','e'))
72415b2a 484 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
5a7ba586 485 else if (type == MKTAG('s','o','u','n'))
72415b2a 486 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
5a7ba586 487 else if (type == MKTAG('m','1','a',' '))
36ef5369 488 st->codec->codec_id = AV_CODEC_ID_MP2;
5a7ba586 489 else if ((type == MKTAG('s','u','b','p')) || (type == MKTAG('c','l','c','p')))
72415b2a 490 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
f05783c2 491
b7effd4e
AK
492 avio_rb32(pb); /* component manufacture */
493 avio_rb32(pb); /* component flags */
494 avio_rb32(pb); /* component flags mask */
6cea494e 495
6cea494e
ZK
496 return 0;
497}
498
ae628ec1 499int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb, MOVAtom atom)
5cd62665 500{
6a63ff19 501 AVStream *st;
e65ab9d9 502 int tag;
b6a17df4 503
2d423666 504 if (fc->nb_streams < 1)
6a63ff19 505 return 0;
2d423666 506 st = fc->streams[fc->nb_streams-1];
6a63ff19 507
b7effd4e 508 avio_rb32(pb); /* version + flags */
e65ab9d9 509 ff_mp4_read_descr(fc, pb, &tag);
5cd62665 510 if (tag == MP4ESDescrTag) {
ad6c7c1b 511 ff_mp4_parse_es_descr(pb, NULL);
5cd62665 512 } else
b7effd4e 513 avio_rb16(pb); /* ID */
5cd62665 514
e65ab9d9 515 ff_mp4_read_descr(fc, pb, &tag);
798c6fac
BC
516 if (tag == MP4DecConfigDescrTag)
517 ff_mp4_read_dec_config_descr(fc, st, pb);
5cd62665
ZK
518 return 0;
519}
520
ae628ec1 521static int mov_read_esds(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2d423666
PR
522{
523 return ff_mov_read_esds(c->fc, pb, atom);
524}
525
ae628ec1 526static int mov_read_dac3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
bdecdd2b
JR
527{
528 AVStream *st;
eb81cf86 529 int ac3info, acmod, lfeon, bsmod;
bdecdd2b 530
6d19fd5c
BC
531 if (c->fc->nb_streams < 1)
532 return 0;
bdecdd2b
JR
533 st = c->fc->streams[c->fc->nb_streams-1];
534
b7effd4e 535 ac3info = avio_rb24(pb);
eb81cf86 536 bsmod = (ac3info >> 14) & 0x7;
bdecdd2b
JR
537 acmod = (ac3info >> 11) & 0x7;
538 lfeon = (ac3info >> 10) & 0x1;
539 st->codec->channels = ((int[]){2,1,2,3,3,4,4,5})[acmod] + lfeon;
3798205a
JR
540 st->codec->channel_layout = avpriv_ac3_channel_layout_tab[acmod];
541 if (lfeon)
542 st->codec->channel_layout |= AV_CH_LOW_FREQUENCY;
eb81cf86
JR
543 st->codec->audio_service_type = bsmod;
544 if (st->codec->channels > 1 && bsmod == 0x7)
545 st->codec->audio_service_type = AV_AUDIO_SERVICE_TYPE_KARAOKE;
bdecdd2b
JR
546
547 return 0;
548}
549
546adc1f
YN
550static int mov_read_dec3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
551{
552 AVStream *st;
553 int eac3info, acmod, lfeon, bsmod;
554
555 if (c->fc->nb_streams < 1)
556 return 0;
557 st = c->fc->streams[c->fc->nb_streams-1];
558
559 /* No need to parse fields for additional independent substreams and its
560 * associated dependent substreams since libavcodec's E-AC-3 decoder
561 * does not support them yet. */
562 avio_rb16(pb); /* data_rate and num_ind_sub */
563 eac3info = avio_rb24(pb);
564 bsmod = (eac3info >> 12) & 0x1f;
565 acmod = (eac3info >> 9) & 0x7;
566 lfeon = (eac3info >> 8) & 0x1;
567 st->codec->channel_layout = avpriv_ac3_channel_layout_tab[acmod];
568 if (lfeon)
569 st->codec->channel_layout |= AV_CH_LOW_FREQUENCY;
570 st->codec->channels = av_get_channel_layout_nb_channels(st->codec->channel_layout);
571 st->codec->audio_service_type = bsmod;
572 if (st->codec->channels > 1 && bsmod == 0x7)
573 st->codec->audio_service_type = AV_AUDIO_SERVICE_TYPE_KARAOKE;
574
575 return 0;
576}
577
1fdf18f4
JR
578static int mov_read_chan(MOVContext *c, AVIOContext *pb, MOVAtom atom)
579{
580 AVStream *st;
1fdf18f4
JR
581
582 if (c->fc->nb_streams < 1)
583 return 0;
584 st = c->fc->streams[c->fc->nb_streams-1];
585
586 if (atom.size < 16)
587 return 0;
588
9afb7061 589 ff_mov_read_chan(c->fc, pb, st, atom.size - 4);
1fdf18f4
JR
590
591 return 0;
592}
593
85e9e3a9
AC
594static int mov_read_wfex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
595{
596 AVStream *st;
597
598 if (c->fc->nb_streams < 1)
599 return 0;
600 st = c->fc->streams[c->fc->nb_streams-1];
601
602 ff_get_wav_header(pb, st->codec, atom.size);
603
604 return 0;
605}
606
ae628ec1 607static int mov_read_pasp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
6da54074 608{
b7effd4e
AK
609 const int num = avio_rb32(pb);
610 const int den = avio_rb32(pb);
6a63ff19
BC
611 AVStream *st;
612
613 if (c->fc->nb_streams < 1)
614 return 0;
615 st = c->fc->streams[c->fc->nb_streams-1];
616
9044dd83
BC
617 if ((st->sample_aspect_ratio.den != 1 || st->sample_aspect_ratio.num) && // default
618 (den != st->sample_aspect_ratio.den || num != st->sample_aspect_ratio.num)) {
619 av_log(c->fc, AV_LOG_WARNING,
620 "sample aspect ratio already set to %d:%d, ignoring 'pasp' atom (%d:%d)\n",
621 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
622 num, den);
623 } else if (den != 0) {
6da54074
BC
624 st->sample_aspect_ratio.num = num;
625 st->sample_aspect_ratio.den = den;
626 }
627 return 0;
628}
629
5ca1d879 630/* this atom contains actual media data */
ae628ec1 631static int mov_read_mdat(MOVContext *c, AVIOContext *pb, MOVAtom atom)
6cea494e 632{
5a7ba586 633 if (atom.size == 0) /* wrong one (MP4) */
5ca1d879
ZK
634 return 0;
635 c->found_mdat=1;
5ca1d879
ZK
636 return 0; /* now go for moov */
637}
638
7b5252ce 639/* read major brand, minor version and compatible brands and store them as metadata */
ae628ec1 640static int mov_read_ftyp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
4ea28253 641{
7b5252ce 642 uint32_t minor_ver;
643 int comp_brand_size;
644 char minor_ver_str[11]; /* 32 bit integer -> 10 digits + null */
645 char* comp_brands_str;
646 uint8_t type[5] = {0};
647
b7effd4e 648 avio_read(pb, type, 4);
a42bf191 649 if (strcmp(type, "qt "))
152e9a43 650 c->isom = 1;
a512446e 651 av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
d2d67e42 652 av_dict_set(&c->fc->metadata, "major_brand", type, 0);
b7effd4e 653 minor_ver = avio_rb32(pb); /* minor version */
d92024f1 654 snprintf(minor_ver_str, sizeof(minor_ver_str), "%"PRIu32"", minor_ver);
d2d67e42 655 av_dict_set(&c->fc->metadata, "minor_version", minor_ver_str, 0);
7b5252ce 656
657 comp_brand_size = atom.size - 8;
658 if (comp_brand_size < 0)
bcd5d979 659 return AVERROR_INVALIDDATA;
7b5252ce 660 comp_brands_str = av_malloc(comp_brand_size + 1); /* Add null terminator */
661 if (!comp_brands_str)
662 return AVERROR(ENOMEM);
b7effd4e 663 avio_read(pb, comp_brands_str, comp_brand_size);
7b5252ce 664 comp_brands_str[comp_brand_size] = 0;
d2d67e42 665 av_dict_set(&c->fc->metadata, "compatible_brands", comp_brands_str, 0);
7b5252ce 666 av_freep(&comp_brands_str);
667
4ea28253
BC
668 return 0;
669}
670
5ca1d879 671/* this atom should contain all header atoms */
ae628ec1 672static int mov_read_moov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
5ca1d879 673{
bcd5d979
DH
674 int ret;
675
676 if ((ret = mov_read_default(c, pb, atom)) < 0)
677 return ret;
5ca1d879
ZK
678 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
679 /* so we don't parse the whole file if over a network */
680 c->found_moov=1;
5ca1d879
ZK
681 return 0; /* now go for mdat */
682}
683
ae628ec1 684static int mov_read_moof(MOVContext *c, AVIOContext *pb, MOVAtom atom)
61aedb0f 685{
a2704c97 686 c->fragment.moof_offset = avio_tell(pb) - 8;
3583d7cf 687 av_dlog(c->fc, "moof offset %"PRIx64"\n", c->fragment.moof_offset);
61aedb0f
BC
688 return mov_read_default(c, pb, atom);
689}
5ca1d879 690
d2d67e42 691static void mov_metadata_creation_time(AVDictionary **metadata, time_t time)
7df22143
AJ
692{
693 char buffer[32];
694 if (time) {
5e2202d6 695 struct tm *ptm;
7df22143 696 time -= 2082844800; /* seconds between 1904-01-01 and Epoch */
5e2202d6
BC
697 ptm = gmtime(&time);
698 if (!ptm) return;
699 strftime(buffer, sizeof(buffer), "%Y-%m-%d %H:%M:%S", ptm);
d2d67e42 700 av_dict_set(metadata, "creation_time", buffer, 0);
7df22143
AJ
701 }
702}
703
ae628ec1 704static int mov_read_mdhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
5ca1d879 705{
6a63ff19
BC
706 AVStream *st;
707 MOVStreamContext *sc;
708 int version;
49674dd0 709 char language[4] = {0};
dce25564 710 unsigned lang;
7df22143 711 time_t creation_time;
5ca1d879 712
6a63ff19
BC
713 if (c->fc->nb_streams < 1)
714 return 0;
715 st = c->fc->streams[c->fc->nb_streams-1];
716 sc = st->priv_data;
717
31931520
MS
718 if (sc->time_scale) {
719 av_log(c->fc, AV_LOG_ERROR, "Multiple mdhd?\n");
720 return AVERROR_INVALIDDATA;
721 }
722
b7effd4e 723 version = avio_r8(pb);
bcd5d979 724 if (version > 1) {
1ecdf891 725 avpriv_request_sample(c->fc, "Version %d", version);
bcd5d979
DH
726 return AVERROR_PATCHWELCOME;
727 }
b7effd4e 728 avio_rb24(pb); /* flags */
f444b977 729 if (version == 1) {
b7effd4e
AK
730 creation_time = avio_rb64(pb);
731 avio_rb64(pb);
f444b977 732 } else {
b7effd4e
AK
733 creation_time = avio_rb32(pb);
734 avio_rb32(pb); /* modification time */
f444b977 735 }
7df22143 736 mov_metadata_creation_time(&st->metadata, creation_time);
5ca1d879 737
b7effd4e
AK
738 sc->time_scale = avio_rb32(pb);
739 st->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
5ca1d879 740
b7effd4e 741 lang = avio_rb16(pb); /* language */
49674dd0 742 if (ff_mov_lang_to_iso639(lang, language))
d2d67e42 743 av_dict_set(&st->metadata, "language", language, 0);
b7effd4e 744 avio_rb16(pb); /* quality */
5ca1d879
ZK
745
746 return 0;
747}
748
ae628ec1 749static int mov_read_mvhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
5ca1d879 750{
7df22143 751 time_t creation_time;
b7effd4e
AK
752 int version = avio_r8(pb); /* version */
753 avio_rb24(pb); /* flags */
5ca1d879 754
1175561e 755 if (version == 1) {
b7effd4e
AK
756 creation_time = avio_rb64(pb);
757 avio_rb64(pb);
1175561e 758 } else {
b7effd4e
AK
759 creation_time = avio_rb32(pb);
760 avio_rb32(pb); /* modification time */
1175561e 761 }
7df22143 762 mov_metadata_creation_time(&c->fc->metadata, creation_time);
b7effd4e 763 c->time_scale = avio_rb32(pb); /* time scale */
f8c18cd7 764
dfd2a005 765 av_dlog(c->fc, "time scale = %i\n", c->time_scale);
f8c18cd7 766
b7effd4e
AK
767 c->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
768 avio_rb32(pb); /* preferred scale */
5ca1d879 769
b7effd4e 770 avio_rb16(pb); /* preferred volume */
5ca1d879 771
45a8a02a 772 avio_skip(pb, 10); /* reserved */
5ca1d879 773
45a8a02a 774 avio_skip(pb, 36); /* display matrix */
5ca1d879 775
b7effd4e
AK
776 avio_rb32(pb); /* preview time */
777 avio_rb32(pb); /* preview duration */
778 avio_rb32(pb); /* poster time */
779 avio_rb32(pb); /* selection time */
780 avio_rb32(pb); /* selection duration */
781 avio_rb32(pb); /* current time */
782 avio_rb32(pb); /* next track ID */
5ca1d879
ZK
783
784 return 0;
785}
786
ae628ec1 787static int mov_read_smi(MOVContext *c, AVIOContext *pb, MOVAtom atom)
9ed83b0a 788{
6a63ff19
BC
789 AVStream *st;
790
791 if (c->fc->nb_streams < 1)
792 return 0;
793 st = c->fc->streams[c->fc->nb_streams-1];
9ed83b0a 794
5a7ba586 795 if ((uint64_t)atom.size > (1<<30))
bcd5d979 796 return AVERROR_INVALIDDATA;
115329f1 797
9ed83b0a
ZK
798 // currently SVQ3 decoder expect full STSD header - so let's fake it
799 // this should be fixed and just SMI header should be passed
01f4895c 800 av_free(st->codec->extradata);
b014dd76
BC
801 st->codec->extradata = av_mallocz(atom.size + 0x5a + FF_INPUT_BUFFER_PADDING_SIZE);
802 if (!st->codec->extradata)
803 return AVERROR(ENOMEM);
17871a02
BC
804 st->codec->extradata_size = 0x5a + atom.size;
805 memcpy(st->codec->extradata, "SVQ3", 4); // fake
b7effd4e 806 avio_read(pb, st->codec->extradata + 0x5a, atom.size);
dfd2a005 807 av_dlog(c->fc, "Reading SMI %"PRId64" %s\n", atom.size, st->codec->extradata + 0x5a);
9ed83b0a
ZK
808 return 0;
809}
5ca1d879 810
ae628ec1 811static int mov_read_enda(MOVContext *c, AVIOContext *pb, MOVAtom atom)
de23f234 812{
6a63ff19
BC
813 AVStream *st;
814 int little_endian;
815
816 if (c->fc->nb_streams < 1)
817 return 0;
818 st = c->fc->streams[c->fc->nb_streams-1];
de23f234 819
b7effd4e 820 little_endian = avio_rb16(pb);
dfd2a005 821 av_dlog(c->fc, "enda %d\n", little_endian);
fa50a027 822 if (little_endian == 1) {
de23f234 823 switch (st->codec->codec_id) {
36ef5369
AK
824 case AV_CODEC_ID_PCM_S24BE:
825 st->codec->codec_id = AV_CODEC_ID_PCM_S24LE;
de23f234 826 break;
36ef5369
AK
827 case AV_CODEC_ID_PCM_S32BE:
828 st->codec->codec_id = AV_CODEC_ID_PCM_S32LE;
de23f234 829 break;
36ef5369
AK
830 case AV_CODEC_ID_PCM_F32BE:
831 st->codec->codec_id = AV_CODEC_ID_PCM_F32LE;
a1ef2c4b 832 break;
36ef5369
AK
833 case AV_CODEC_ID_PCM_F64BE:
834 st->codec->codec_id = AV_CODEC_ID_PCM_F64LE;
a1ef2c4b 835 break;
de23f234
BC
836 default:
837 break;
838 }
839 }
840 return 0;
841}
842
4bf3c8f2
AC
843static int mov_read_fiel(MOVContext *c, AVIOContext *pb, MOVAtom atom)
844{
845 AVStream *st;
846 unsigned mov_field_order;
847 enum AVFieldOrder decoded_field_order = AV_FIELD_UNKNOWN;
848
849 if (c->fc->nb_streams < 1) // will happen with jp2 files
850 return 0;
851 st = c->fc->streams[c->fc->nb_streams-1];
852 if (atom.size < 2)
853 return AVERROR_INVALIDDATA;
854 mov_field_order = avio_rb16(pb);
855 if ((mov_field_order & 0xFF00) == 0x0100)
856 decoded_field_order = AV_FIELD_PROGRESSIVE;
857 else if ((mov_field_order & 0xFF00) == 0x0200) {
858 switch (mov_field_order & 0xFF) {
859 case 0x01: decoded_field_order = AV_FIELD_TT;
860 break;
861 case 0x06: decoded_field_order = AV_FIELD_BB;
862 break;
863 case 0x09: decoded_field_order = AV_FIELD_TB;
864 break;
865 case 0x0E: decoded_field_order = AV_FIELD_BT;
866 break;
867 }
868 }
869 if (decoded_field_order == AV_FIELD_UNKNOWN && mov_field_order) {
870 av_log(NULL, AV_LOG_ERROR, "Unknown MOV field order 0x%04x\n", mov_field_order);
871 }
872 st->codec->field_order = decoded_field_order;
873
874 return 0;
875}
876
014a5102 877/* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
ae628ec1 878static int mov_read_extradata(MOVContext *c, AVIOContext *pb, MOVAtom atom)
de23f234 879{
27134437
BC
880 AVStream *st;
881 uint64_t size;
68bc33fa 882 uint8_t *buf;
5626f994 883 int err;
27134437
BC
884
885 if (c->fc->nb_streams < 1) // will happen with jp2 files
886 return 0;
887 st= c->fc->streams[c->fc->nb_streams-1];
888 size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
5a7ba586 889 if (size > INT_MAX || (uint64_t)atom.size > INT_MAX)
bcd5d979 890 return AVERROR_INVALIDDATA;
d872fb0f
MS
891 if ((err = av_reallocp(&st->codec->extradata, size)) < 0) {
892 st->codec->extradata_size = 0;
5626f994 893 return err;
d872fb0f 894 }
5626f994 895 buf = st->codec->extradata + st->codec->extradata_size;
68bc33fa
BC
896 st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE;
897 AV_WB32( buf , atom.size + 8);
898 AV_WL32( buf + 4, atom.type);
b7effd4e 899 avio_read(pb, buf + 8, atom.size);
de23f234
BC
900 return 0;
901}
902
ae628ec1 903static int mov_read_wave(MOVContext *c, AVIOContext *pb, MOVAtom atom)
d9b1c197 904{
6a63ff19
BC
905 AVStream *st;
906
907 if (c->fc->nb_streams < 1)
908 return 0;
909 st = c->fc->streams[c->fc->nb_streams-1];
d9b1c197 910
5a7ba586 911 if ((uint64_t)atom.size > (1<<30))
bcd5d979 912 return AVERROR_INVALIDDATA;
115329f1 913
36ef5369 914 if (st->codec->codec_id == AV_CODEC_ID_QDM2 || st->codec->codec_id == AV_CODEC_ID_QDMC) {
ed19fafd 915 // pass all frma atom to codec, needed at least for QDMC and QDM2
3840147e 916 av_free(st->codec->extradata);
b014dd76
BC
917 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
918 if (!st->codec->extradata)
919 return AVERROR(ENOMEM);
3840147e 920 st->codec->extradata_size = atom.size;
b7effd4e 921 avio_read(pb, st->codec->extradata, atom.size);
3840147e 922 } else if (atom.size > 8) { /* to read frma, esds atoms */
bcd5d979
DH
923 int ret;
924 if ((ret = mov_read_default(c, pb, atom)) < 0)
925 return ret;
5c72cad8 926 } else
45a8a02a 927 avio_skip(pb, atom.size);
d9b1c197
RT
928 return 0;
929}
930
bde24601
BC
931/**
932 * This function reads atom content and puts data in extradata without tag
933 * nor size unlike mov_read_extradata.
934 */
ae628ec1 935static int mov_read_glbl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
169eb021 936{
6a63ff19
BC
937 AVStream *st;
938
939 if (c->fc->nb_streams < 1)
940 return 0;
941 st = c->fc->streams[c->fc->nb_streams-1];
169eb021 942
5a7ba586 943 if ((uint64_t)atom.size > (1<<30))
bcd5d979 944 return AVERROR_INVALIDDATA;
568e18b1 945
4bf3c8f2 946 if (atom.size >= 10) {
59cbc4ee 947 // Broken files created by legacy versions of libavformat will
4bf3c8f2
AC
948 // wrap a whole fiel atom inside of a glbl atom.
949 unsigned size = avio_rb32(pb);
950 unsigned type = avio_rl32(pb);
951 avio_seek(pb, -8, SEEK_CUR);
952 if (type == MKTAG('f','i','e','l') && size == atom.size)
953 return mov_read_default(c, pb, atom);
954 }
01f4895c 955 av_free(st->codec->extradata);
b014dd76
BC
956 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
957 if (!st->codec->extradata)
958 return AVERROR(ENOMEM);
01f4895c 959 st->codec->extradata_size = atom.size;
b7effd4e 960 avio_read(pb, st->codec->extradata, atom.size);
169eb021
MM
961 return 0;
962}
963
89415b8e
MS
964static int mov_read_dvc1(MOVContext *c, AVIOContext *pb, MOVAtom atom)
965{
966 AVStream *st;
967 uint8_t profile_level;
968
969 if (c->fc->nb_streams < 1)
970 return 0;
971 st = c->fc->streams[c->fc->nb_streams-1];
972
973 if (atom.size >= (1<<28) || atom.size < 7)
974 return AVERROR_INVALIDDATA;
975
976 profile_level = avio_r8(pb);
f1f37c70 977 if ((profile_level & 0xf0) != 0xc0)
89415b8e
MS
978 return 0;
979
980 av_free(st->codec->extradata);
981 st->codec->extradata = av_mallocz(atom.size - 7 + FF_INPUT_BUFFER_PADDING_SIZE);
982 if (!st->codec->extradata)
983 return AVERROR(ENOMEM);
984 st->codec->extradata_size = atom.size - 7;
985 avio_seek(pb, 6, SEEK_CUR);
986 avio_read(pb, st->codec->extradata, st->codec->extradata_size);
987 return 0;
988}
989
653d7aeb
MS
990/**
991 * An strf atom is a BITMAPINFOHEADER struct. This struct is 40 bytes itself,
992 * but can have extradata appended at the end after the 40 bytes belonging
993 * to the struct.
994 */
ae628ec1 995static int mov_read_strf(MOVContext *c, AVIOContext *pb, MOVAtom atom)
653d7aeb
MS
996{
997 AVStream *st;
998
999 if (c->fc->nb_streams < 1)
1000 return 0;
1001 if (atom.size <= 40)
1002 return 0;
1003 st = c->fc->streams[c->fc->nb_streams-1];
1004
5a7ba586 1005 if ((uint64_t)atom.size > (1<<30))
bcd5d979 1006 return AVERROR_INVALIDDATA;
653d7aeb
MS
1007
1008 av_free(st->codec->extradata);
1009 st->codec->extradata = av_mallocz(atom.size - 40 + FF_INPUT_BUFFER_PADDING_SIZE);
1010 if (!st->codec->extradata)
1011 return AVERROR(ENOMEM);
1012 st->codec->extradata_size = atom.size - 40;
45a8a02a 1013 avio_skip(pb, 40);
b7effd4e 1014 avio_read(pb, st->codec->extradata, atom.size - 40);
653d7aeb
MS
1015 return 0;
1016}
1017
ae628ec1 1018static int mov_read_stco(MOVContext *c, AVIOContext *pb, MOVAtom atom)
5ca1d879 1019{
6a63ff19
BC
1020 AVStream *st;
1021 MOVStreamContext *sc;
568e18b1 1022 unsigned int i, entries;
5ca1d879 1023
6a63ff19
BC
1024 if (c->fc->nb_streams < 1)
1025 return 0;
1026 st = c->fc->streams[c->fc->nb_streams-1];
1027 sc = st->priv_data;
1028
b7effd4e
AK
1029 avio_r8(pb); /* version */
1030 avio_rb24(pb); /* flags */
5ca1d879 1031
b7effd4e 1032 entries = avio_rb32(pb);
115329f1 1033
52401b82
AC
1034 if (!entries)
1035 return 0;
5a7ba586 1036 if (entries >= UINT_MAX/sizeof(int64_t))
bcd5d979 1037 return AVERROR_INVALIDDATA;
115329f1 1038
9a630c25 1039 sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
5ca1d879 1040 if (!sc->chunk_offsets)
0d8f0abf
BC
1041 return AVERROR(ENOMEM);
1042 sc->chunk_count = entries;
1043
37ffe34b 1044 if (atom.type == MKTAG('s','t','c','o'))
9888ffb1 1045 for (i = 0; i < entries && !pb->eof_reached; i++)
b7effd4e 1046 sc->chunk_offsets[i] = avio_rb32(pb);
37ffe34b 1047 else if (atom.type == MKTAG('c','o','6','4'))
9888ffb1 1048 for (i = 0; i < entries && !pb->eof_reached; i++)
b7effd4e 1049 sc->chunk_offsets[i] = avio_rb64(pb);
37ffe34b 1050 else
bcd5d979 1051 return AVERROR_INVALIDDATA;
115329f1 1052
9888ffb1
LB
1053 sc->chunk_count = i;
1054
1055 if (pb->eof_reached)
1056 return AVERROR_EOF;
1057
5ca1d879
ZK
1058 return 0;
1059}
1060
2288834f
BC
1061/**
1062 * Compute codec id for 'lpcm' tag.
1063 * See CoreAudioTypes and AudioStreamBasicDescription at Apple.
1064 */
36ef5369 1065enum AVCodecID ff_mov_get_lpcm_codec_id(int bps, int flags)
2288834f 1066{
261e9348
JR
1067 /* lpcm flags:
1068 * 0x1 = float
1069 * 0x2 = big-endian
1070 * 0x4 = signed
1071 */
1072 return ff_get_pcm_codec_id(bps, flags & 1, flags & 2, flags & 4 ? -1 : 0);
2288834f
BC
1073}
1074
bf985625
LB
1075static int mov_codec_id(AVStream *st, uint32_t format)
1076{
1077 int id = ff_codec_get_id(ff_codec_movaudio_tags, format);
1078
1079 if (id <= 0 &&
1080 ((format & 0xFFFF) == 'm' + ('s' << 8) ||
1081 (format & 0xFFFF) == 'T' + ('S' << 8)))
1082 id = ff_codec_get_id(ff_codec_wav_tags, av_bswap32(format) & 0xFFFF);
1083
1084 if (st->codec->codec_type != AVMEDIA_TYPE_VIDEO && id > 0) {
1085 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
1086 } else if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO &&
1087 /* skip old asf mpeg4 tag */
1088 format && format != MKTAG('m','p','4','s')) {
1089 id = ff_codec_get_id(ff_codec_movvideo_tags, format);
1090 if (id <= 0)
1091 id = ff_codec_get_id(ff_codec_bmp_tags, format);
1092 if (id > 0)
1093 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
1094 else if (st->codec->codec_type == AVMEDIA_TYPE_DATA) {
1095 id = ff_codec_get_id(ff_codec_movsubtitle_tags, format);
1096 if (id > 0)
1097 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
1098 }
1099 }
1100
1101 st->codec->codec_tag = format;
1102
1103 return id;
1104}
1105
a3b53ff0
LB
1106static void mov_parse_stsd_video(MOVContext *c, AVIOContext *pb,
1107 AVStream *st, MOVStreamContext *sc)
1108{
1109 unsigned int color_depth, len, j;
1110 int color_greyscale;
1111 int color_table_id;
1112
1113 avio_rb16(pb); /* version */
1114 avio_rb16(pb); /* revision level */
1115 avio_rb32(pb); /* vendor */
1116 avio_rb32(pb); /* temporal quality */
1117 avio_rb32(pb); /* spatial quality */
1118
1119 st->codec->width = avio_rb16(pb); /* width */
1120 st->codec->height = avio_rb16(pb); /* height */
1121
1122 avio_rb32(pb); /* horiz resolution */
1123 avio_rb32(pb); /* vert resolution */
1124 avio_rb32(pb); /* data size, always 0 */
1125 avio_rb16(pb); /* frames per samples */
1126
1127 len = avio_r8(pb); /* codec name, pascal string */
1128 if (len > 31)
1129 len = 31;
1130 mov_read_mac_string(c, pb, len, st->codec->codec_name, 32);
1131 if (len < 31)
1132 avio_skip(pb, 31 - len);
1133 /* codec_tag YV12 triggers an UV swap in rawdec.c */
1134 if (!memcmp(st->codec->codec_name, "Planar Y'CbCr 8-bit 4:2:0", 25))
1135 st->codec->codec_tag = MKTAG('I', '4', '2', '0');
1136 /* Flash Media Server uses tag H263 with Sorenson Spark */
1137 if (st->codec->codec_tag == MKTAG('H','2','6','3') &&
1138 !memcmp(st->codec->codec_name, "Sorenson H263", 13))
1139 st->codec->codec_id = AV_CODEC_ID_FLV1;
1140
1141 st->codec->bits_per_coded_sample = avio_rb16(pb); /* depth */
1142 color_table_id = avio_rb16(pb); /* colortable id */
1143 av_dlog(c->fc, "depth %d, ctab id %d\n",
1144 st->codec->bits_per_coded_sample, color_table_id);
1145 /* figure out the palette situation */
1146 color_depth = st->codec->bits_per_coded_sample & 0x1F;
1147 color_greyscale = st->codec->bits_per_coded_sample & 0x20;
1148
1149 /* if the depth is 2, 4, or 8 bpp, file is palettized */
1150 if ((color_depth == 2) || (color_depth == 4) || (color_depth == 8)) {
1151 /* for palette traversal */
1152 unsigned int color_start, color_count, color_end;
1153 unsigned char r, g, b;
1154
1155 if (color_greyscale) {
1156 int color_index, color_dec;
1157 /* compute the greyscale palette */
1158 st->codec->bits_per_coded_sample = color_depth;
1159 color_count = 1 << color_depth;
1160 color_index = 255;
1161 color_dec = 256 / (color_count - 1);
1162 for (j = 0; j < color_count; j++) {
1163 r = g = b = color_index;
1164 sc->palette[j] = (r << 16) | (g << 8) | (b);
1165 color_index -= color_dec;
1166 if (color_index < 0)
1167 color_index = 0;
1168 }
1169 } else if (color_table_id) {
1170 const uint8_t *color_table;
1171 /* if flag bit 3 is set, use the default palette */
1172 color_count = 1 << color_depth;
1173 if (color_depth == 2)
1174 color_table = ff_qt_default_palette_4;
1175 else if (color_depth == 4)
1176 color_table = ff_qt_default_palette_16;
1177 else
1178 color_table = ff_qt_default_palette_256;
1179
1180 for (j = 0; j < color_count; j++) {
1181 r = color_table[j * 3 + 0];
1182 g = color_table[j * 3 + 1];
1183 b = color_table[j * 3 + 2];
1184 sc->palette[j] = (r << 16) | (g << 8) | (b);
1185 }
1186 } else {
1187 /* load the palette from the file */
1188 color_start = avio_rb32(pb);
1189 color_count = avio_rb16(pb);
1190 color_end = avio_rb16(pb);
1191 if ((color_start <= 255) && (color_end <= 255)) {
1192 for (j = color_start; j <= color_end; j++) {
1193 /* each R, G, or B component is 16 bits;
1194 * only use the top 8 bits; skip alpha bytes
1195 * up front */
1196 avio_r8(pb);
1197 avio_r8(pb);
1198 r = avio_r8(pb);
1199 avio_r8(pb);
1200 g = avio_r8(pb);
1201 avio_r8(pb);
1202 b = avio_r8(pb);
1203 avio_r8(pb);
1204 sc->palette[j] = (r << 16) | (g << 8) | (b);
1205 }
1206 }
1207 }
1208 sc->has_palette = 1;
1209 }
1210}
1211
ef196bee
LB
1212static void mov_parse_stsd_audio(MOVContext *c, AVIOContext *pb,
1213 AVStream *st, MOVStreamContext *sc)
1214{
1215 int bits_per_sample, flags;
1216 uint16_t version = avio_rb16(pb);
1217
1218 avio_rb16(pb); /* revision level */
1219 avio_rb32(pb); /* vendor */
1220
1221 st->codec->channels = avio_rb16(pb); /* channel count */
1222 st->codec->bits_per_coded_sample = avio_rb16(pb); /* sample size */
1223 av_dlog(c->fc, "audio channels %d\n", st->codec->channels);
1224
1225 sc->audio_cid = avio_rb16(pb);
1226 avio_rb16(pb); /* packet size = 0 */
1227
1228 st->codec->sample_rate = ((avio_rb32(pb) >> 16));
1229
1230 // Read QT version 1 fields. In version 0 these do not exist.
1231 av_dlog(c->fc, "version =%d, isom =%d\n", version, c->isom);
1232 if (!c->isom) {
1233 if (version == 1) {
1234 sc->samples_per_frame = avio_rb32(pb);
1235 avio_rb32(pb); /* bytes per packet */
1236 sc->bytes_per_frame = avio_rb32(pb);
1237 avio_rb32(pb); /* bytes per sample */
1238 } else if (version == 2) {
1239 avio_rb32(pb); /* sizeof struct only */
1240 st->codec->sample_rate = av_int2double(avio_rb64(pb));
1241 st->codec->channels = avio_rb32(pb);
1242 avio_rb32(pb); /* always 0x7F000000 */
1243 st->codec->bits_per_coded_sample = avio_rb32(pb);
1244
1245 flags = avio_rb32(pb); /* lpcm format specific flag */
1246 sc->bytes_per_frame = avio_rb32(pb);
1247 sc->samples_per_frame = avio_rb32(pb);
1248 if (st->codec->codec_tag == MKTAG('l','p','c','m'))
1249 st->codec->codec_id =
1250 ff_mov_get_lpcm_codec_id(st->codec->bits_per_coded_sample,
1251 flags);
1252 }
1253 }
1254
1255 switch (st->codec->codec_id) {
1256 case AV_CODEC_ID_PCM_S8:
1257 case AV_CODEC_ID_PCM_U8:
1258 if (st->codec->bits_per_coded_sample == 16)
1259 st->codec->codec_id = AV_CODEC_ID_PCM_S16BE;
1260 break;
1261 case AV_CODEC_ID_PCM_S16LE:
1262 case AV_CODEC_ID_PCM_S16BE:
1263 if (st->codec->bits_per_coded_sample == 8)
1264 st->codec->codec_id = AV_CODEC_ID_PCM_S8;
1265 else if (st->codec->bits_per_coded_sample == 24)
1266 st->codec->codec_id =
1267 st->codec->codec_id == AV_CODEC_ID_PCM_S16BE ?
1268 AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE;
1269 break;
1270 /* set values for old format before stsd version 1 appeared */
1271 case AV_CODEC_ID_MACE3:
1272 sc->samples_per_frame = 6;
1273 sc->bytes_per_frame = 2 * st->codec->channels;
1274 break;
1275 case AV_CODEC_ID_MACE6:
1276 sc->samples_per_frame = 6;
1277 sc->bytes_per_frame = 1 * st->codec->channels;
1278 break;
1279 case AV_CODEC_ID_ADPCM_IMA_QT:
1280 sc->samples_per_frame = 64;
1281 sc->bytes_per_frame = 34 * st->codec->channels;
1282 break;
1283 case AV_CODEC_ID_GSM:
1284 sc->samples_per_frame = 160;
1285 sc->bytes_per_frame = 33;
1286 break;
1287 default:
1288 break;
1289 }
1290
1291 bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
1292 if (bits_per_sample) {
1293 st->codec->bits_per_coded_sample = bits_per_sample;
1294 sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
1295 }
1296}
1297
dc518a3a
LB
1298static void mov_parse_stsd_subtitle(MOVContext *c, AVIOContext *pb,
1299 AVStream *st, MOVStreamContext *sc,
1300 int size)
1301{
1302 // ttxt stsd contains display flags, justification, background
1303 // color, fonts, and default styles, so fake an atom to read it
1304 MOVAtom fake_atom = { .size = size };
1305 // mp4s contains a regular esds atom
1306 if (st->codec->codec_tag != AV_RL32("mp4s"))
1307 mov_read_glbl(c, pb, fake_atom);
1308 st->codec->width = sc->width;
1309 st->codec->height = sc->height;
1310}
1311
5b41eb91
LB
1312static int mov_parse_stsd_data(MOVContext *c, AVIOContext *pb,
1313 AVStream *st, MOVStreamContext *sc,
1314 int size)
1315{
1316 if (st->codec->codec_tag == MKTAG('t','m','c','d')) {
1317 st->codec->extradata_size = size;
1318 st->codec->extradata = av_malloc(size + FF_INPUT_BUFFER_PADDING_SIZE);
1319 if (!st->codec->extradata)
1320 return AVERROR(ENOMEM);
1321 avio_read(pb, st->codec->extradata, size);
1322 } else {
1323 /* other codec type, just skip (rtp, mp4s ...) */
1324 avio_skip(pb, size);
1325 }
1326 return 0;
1327}
1328
08504380
LB
1329static int mov_finalize_stsd_codec(MOVContext *c, AVIOContext *pb,
1330 AVStream *st, MOVStreamContext *sc)
1331{
1332 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
1333 !st->codec->sample_rate && sc->time_scale > 1)
1334 st->codec->sample_rate = sc->time_scale;
1335
1336 /* special codec parameters handling */
1337 switch (st->codec->codec_id) {
1338#if CONFIG_DV_DEMUXER
1339 case AV_CODEC_ID_DVAUDIO:
1340 c->dv_fctx = avformat_alloc_context();
1341 c->dv_demux = avpriv_dv_init_demux(c->dv_fctx);
1342 if (!c->dv_demux) {
1343 av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
1344 return AVERROR(ENOMEM);
1345 }
1346 sc->dv_audio_container = 1;
1347 st->codec->codec_id = AV_CODEC_ID_PCM_S16LE;
1348 break;
1349#endif
1350 /* no ifdef since parameters are always those */
1351 case AV_CODEC_ID_QCELP:
1352 st->codec->channels = 1;
1353 // force sample rate for qcelp when not stored in mov
1354 if (st->codec->codec_tag != MKTAG('Q','c','l','p'))
1355 st->codec->sample_rate = 8000;
1356 break;
1357 case AV_CODEC_ID_AMR_NB:
1358 st->codec->channels = 1;
1359 /* force sample rate for amr, stsd in 3gp does not store sample rate */
1360 st->codec->sample_rate = 8000;
1361 break;
1362 case AV_CODEC_ID_AMR_WB:
1363 st->codec->channels = 1;
1364 st->codec->sample_rate = 16000;
1365 break;
1366 case AV_CODEC_ID_MP2:
1367 case AV_CODEC_ID_MP3:
1368 /* force type after stsd for m1a hdlr */
1369 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
1370 st->need_parsing = AVSTREAM_PARSE_FULL;
1371 break;
1372 case AV_CODEC_ID_GSM:
1373 case AV_CODEC_ID_ADPCM_MS:
1374 case AV_CODEC_ID_ADPCM_IMA_WAV:
1375 case AV_CODEC_ID_ILBC:
1376 st->codec->block_align = sc->bytes_per_frame;
1377 break;
1378 case AV_CODEC_ID_ALAC:
1379 if (st->codec->extradata_size == 36) {
1380 st->codec->channels = AV_RB8 (st->codec->extradata + 21);
1381 st->codec->sample_rate = AV_RB32(st->codec->extradata + 32);
1382 }
1383 break;
1384 case AV_CODEC_ID_VC1:
1385 st->need_parsing = AVSTREAM_PARSE_FULL;
1386 break;
1387 default:
1388 break;
1389 }
1390 return 0;
1391}
1392
0b5af5cf
LB
1393static int mov_skip_multiple_stsd(MOVContext *c, AVIOContext *pb,
1394 int codec_tag, int format,
1395 int size)
1396{
1397 int video_codec_id = ff_codec_get_id(ff_codec_movvideo_tags, format);
1398
1399 if (codec_tag &&
1400 (codec_tag == AV_RL32("avc1") ||
ea29f965
YN
1401 codec_tag == AV_RL32("hvc1") ||
1402 codec_tag == AV_RL32("hev1") ||
0b5af5cf
LB
1403 (codec_tag != format &&
1404 (c->fc->video_codec_id ? video_codec_id != c->fc->video_codec_id
1405 : codec_tag != MKTAG('j','p','e','g'))))) {
1406 /* Multiple fourcc, we skip JPEG. This is not correct, we should
1407 * export it as a separate AVStream but this needs a few changes
1408 * in the MOV demuxer, patch welcome. */
1409
1410 av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n");
1411 avio_skip(pb, size);
1412 return 1;
1413 }
1414
1415 return 0;
1416}
1417
ae628ec1 1418int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries)
5ca1d879 1419{
6a63ff19
BC
1420 AVStream *st;
1421 MOVStreamContext *sc;
a3b53ff0 1422 int pseudo_stream_id;
b595afaa 1423
6a63ff19
BC
1424 if (c->fc->nb_streams < 1)
1425 return 0;
1426 st = c->fc->streams[c->fc->nb_streams-1];
1427 sc = st->priv_data;
1428
9888ffb1
LB
1429 for (pseudo_stream_id = 0;
1430 pseudo_stream_id < entries && !pb->eof_reached;
1431 pseudo_stream_id++) {
117a9190 1432 //Parsing Sample description table
36ef5369 1433 enum AVCodecID id;
5b41eb91 1434 int ret, dref_id = 1;
3491866a 1435 MOVAtom a = { AV_RL32("stsd") };
a2704c97 1436 int64_t start_pos = avio_tell(pb);
a5ea623b 1437 uint32_t size = avio_rb32(pb); /* size */
b7effd4e 1438 uint32_t format = avio_rl32(pb); /* data format */
5cd62665 1439
28155113 1440 if (size >= 16) {
b7effd4e
AK
1441 avio_rb32(pb); /* reserved */
1442 avio_rb16(pb); /* reserved */
1443 dref_id = avio_rb16(pb);
a5ea623b 1444 } else {
d92024f1 1445 av_log(c->fc, AV_LOG_ERROR, "invalid size %"PRIu32" in stsd\n", size);
a5ea623b 1446 return AVERROR_INVALIDDATA;
28155113 1447 }
0e7eed09 1448
0b5af5cf
LB
1449 if (mov_skip_multiple_stsd(c, pb, st->codec->codec_tag, format,
1450 size - (avio_tell(pb) - start_pos)))
e7cc4b52 1451 continue;
0b5af5cf 1452
978677a7 1453 sc->pseudo_stream_id = st->codec->codec_tag ? -1 : pseudo_stream_id;
221e21b7 1454 sc->dref_id= dref_id;
e7cc4b52 1455
bf985625 1456 id = mov_codec_id(st, format);
99487f42 1457
d92024f1 1458 av_dlog(c->fc, "size=%"PRIu32" 4CC= %"PRIu8"%"PRIu8"%"PRIu8"%"PRIu8" codec_type=%d\n", size,
29c90869
BC
1459 (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff,
1460 (format >> 24) & 0xff, st->codec->codec_type);
a20da52c 1461
5a7ba586 1462 if (st->codec->codec_type==AVMEDIA_TYPE_VIDEO) {
01f4895c 1463 st->codec->codec_id = id;
a3b53ff0 1464 mov_parse_stsd_video(c, pb, st, sc);
5a7ba586 1465 } else if (st->codec->codec_type==AVMEDIA_TYPE_AUDIO) {
99487f42 1466 st->codec->codec_id = id;
ef196bee 1467 mov_parse_stsd_audio(c, pb, st, sc);
5a7ba586 1468 } else if (st->codec->codec_type==AVMEDIA_TYPE_SUBTITLE){
dc518a3a
LB
1469 st->codec->codec_id = id;
1470 mov_parse_stsd_subtitle(c, pb, st, sc,
1471 size - (avio_tell(pb) - start_pos));
de23f234 1472 } else {
5b41eb91
LB
1473 ret = mov_parse_stsd_data(c, pb, st, sc,
1474 size - (avio_tell(pb) - start_pos));
1475 if (ret < 0)
1476 return ret;
6cea494e 1477 }
ea29f965 1478 /* this will read extra atoms at the end (wave, alac, damr, avcC, hvcC, SMI ...) */
a2704c97 1479 a.size = size - (avio_tell(pb) - start_pos);
9cf0419b 1480 if (a.size > 8) {
bcd5d979
DH
1481 if ((ret = mov_read_default(c, pb, a)) < 0)
1482 return ret;
9cf0419b 1483 } else if (a.size > 0)
45a8a02a 1484 avio_skip(pb, a.size);
6cea494e 1485 }
115329f1 1486
9888ffb1
LB
1487 if (pb->eof_reached)
1488 return AVERROR_EOF;
1489
08504380 1490 return mov_finalize_stsd_codec(c, pb, st, sc);
6cea494e
ZK
1491}
1492
ae628ec1 1493static int mov_read_stsd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
dc2cabd0
MS
1494{
1495 int entries;
1496
b7effd4e
AK
1497 avio_r8(pb); /* version */
1498 avio_rb24(pb); /* flags */
1499 entries = avio_rb32(pb);
dc2cabd0
MS
1500
1501 return ff_mov_read_stsd_entries(c, pb, entries);
1502}
1503
ae628ec1 1504static int mov_read_stsc(MOVContext *c, AVIOContext *pb, MOVAtom atom)
6cea494e 1505{
6a63ff19
BC
1506 AVStream *st;
1507 MOVStreamContext *sc;
568e18b1 1508 unsigned int i, entries;
b6a17df4 1509
6a63ff19
BC
1510 if (c->fc->nb_streams < 1)
1511 return 0;
1512 st = c->fc->streams[c->fc->nb_streams-1];
1513 sc = st->priv_data;
1514
b7effd4e
AK
1515 avio_r8(pb); /* version */
1516 avio_rb24(pb); /* flags */
6cea494e 1517
b7effd4e 1518 entries = avio_rb32(pb);
115329f1 1519
dfd2a005 1520 av_dlog(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
f8c18cd7 1521
52401b82
AC
1522 if (!entries)
1523 return 0;
5a7ba586 1524 if (entries >= UINT_MAX / sizeof(*sc->stsc_data))
bcd5d979 1525 return AVERROR_INVALIDDATA;
04e06cfa
BC
1526 sc->stsc_data = av_malloc(entries * sizeof(*sc->stsc_data));
1527 if (!sc->stsc_data)
0d8f0abf 1528 return AVERROR(ENOMEM);
0d8f0abf 1529
9888ffb1 1530 for (i = 0; i < entries && !pb->eof_reached; i++) {
b7effd4e
AK
1531 sc->stsc_data[i].first = avio_rb32(pb);
1532 sc->stsc_data[i].count = avio_rb32(pb);
1533 sc->stsc_data[i].id = avio_rb32(pb);
6cea494e 1534 }
9888ffb1
LB
1535
1536 sc->stsc_count = i;
1537
1538 if (pb->eof_reached)
1539 return AVERROR_EOF;
1540
6cea494e
ZK
1541 return 0;
1542}
1543
ae628ec1 1544static int mov_read_stps(MOVContext *c, AVIOContext *pb, MOVAtom atom)
171a3531
BC
1545{
1546 AVStream *st;
1547 MOVStreamContext *sc;
1548 unsigned i, entries;
1549
1550 if (c->fc->nb_streams < 1)
1551 return 0;
1552 st = c->fc->streams[c->fc->nb_streams-1];
1553 sc = st->priv_data;
1554
b7effd4e 1555 avio_rb32(pb); // version + flags
171a3531 1556
b7effd4e 1557 entries = avio_rb32(pb);
171a3531 1558 if (entries >= UINT_MAX / sizeof(*sc->stps_data))
bcd5d979 1559 return AVERROR_INVALIDDATA;
171a3531
BC
1560 sc->stps_data = av_malloc(entries * sizeof(*sc->stps_data));
1561 if (!sc->stps_data)
1562 return AVERROR(ENOMEM);
171a3531 1563
9888ffb1 1564 for (i = 0; i < entries && !pb->eof_reached; i++) {
b7effd4e 1565 sc->stps_data[i] = avio_rb32(pb);
dfd2a005 1566 //av_dlog(c->fc, "stps %d\n", sc->stps_data[i]);
171a3531
BC
1567 }
1568
9888ffb1
LB
1569 sc->stps_count = i;
1570
1571 if (pb->eof_reached)
1572 return AVERROR_EOF;
1573
171a3531
BC
1574 return 0;
1575}
1576
ae628ec1 1577static int mov_read_stss(MOVContext *c, AVIOContext *pb, MOVAtom atom)
247d56f5 1578{
6a63ff19
BC
1579 AVStream *st;
1580 MOVStreamContext *sc;
568e18b1 1581 unsigned int i, entries;
247d56f5 1582
6a63ff19
BC
1583 if (c->fc->nb_streams < 1)
1584 return 0;
1585 st = c->fc->streams[c->fc->nb_streams-1];
1586 sc = st->priv_data;
1587
b7effd4e
AK
1588 avio_r8(pb); /* version */
1589 avio_rb24(pb); /* flags */
247d56f5 1590
b7effd4e 1591 entries = avio_rb32(pb);
115329f1 1592
dfd2a005 1593 av_dlog(c->fc, "keyframe_count = %d\n", entries);
0d8f0abf 1594
29a20ac4 1595 if (!entries)
accea4d9
YN
1596 {
1597 sc->keyframe_absent = 1;
29a20ac4 1598 return 0;
accea4d9 1599 }
5a7ba586 1600 if (entries >= UINT_MAX / sizeof(int))
bcd5d979 1601 return AVERROR_INVALIDDATA;
1c02d96f 1602 sc->keyframes = av_malloc(entries * sizeof(int));
247d56f5 1603 if (!sc->keyframes)
0d8f0abf 1604 return AVERROR(ENOMEM);
0d8f0abf 1605
9888ffb1 1606 for (i = 0; i < entries && !pb->eof_reached; i++) {
b7effd4e 1607 sc->keyframes[i] = avio_rb32(pb);
dfd2a005 1608 //av_dlog(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
247d56f5 1609 }
9888ffb1
LB
1610
1611 sc->keyframe_count = i;
1612
1613 if (pb->eof_reached)
1614 return AVERROR_EOF;
1615
247d56f5
BB
1616 return 0;
1617}
1618
ae628ec1 1619static int mov_read_stsz(MOVContext *c, AVIOContext *pb, MOVAtom atom)
6cea494e 1620{
6a63ff19
BC
1621 AVStream *st;
1622 MOVStreamContext *sc;
bd27eed6
AC
1623 unsigned int i, entries, sample_size, field_size, num_bytes;
1624 GetBitContext gb;
1625 unsigned char* buf;
b6a17df4 1626
6a63ff19
BC
1627 if (c->fc->nb_streams < 1)
1628 return 0;
1629 st = c->fc->streams[c->fc->nb_streams-1];
1630 sc = st->priv_data;
1631
b7effd4e
AK
1632 avio_r8(pb); /* version */
1633 avio_rb24(pb); /* flags */
5cd62665 1634
bd27eed6 1635 if (atom.type == MKTAG('s','t','s','z')) {
b7effd4e 1636 sample_size = avio_rb32(pb);
d0dab0ec
AC
1637 if (!sc->sample_size) /* do not overwrite value computed in stsd */
1638 sc->sample_size = sample_size;
1639 field_size = 32;
bd27eed6
AC
1640 } else {
1641 sample_size = 0;
b7effd4e
AK
1642 avio_rb24(pb); /* reserved */
1643 field_size = avio_r8(pb);
bd27eed6 1644 }
b7effd4e 1645 entries = avio_rb32(pb);
0d8f0abf 1646
dfd2a005 1647 av_dlog(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, entries);
568e18b1 1648
6cea494e 1649 sc->sample_count = entries;
b72708f8
BC
1650 if (sample_size)
1651 return 0;
1652
bd27eed6
AC
1653 if (field_size != 4 && field_size != 8 && field_size != 16 && field_size != 32) {
1654 av_log(c->fc, AV_LOG_ERROR, "Invalid sample field size %d\n", field_size);
bcd5d979 1655 return AVERROR_INVALIDDATA;
bd27eed6
AC
1656 }
1657
52401b82
AC
1658 if (!entries)
1659 return 0;
e4bc8af1 1660 if (entries >= UINT_MAX / sizeof(int) || entries >= (UINT_MAX - 4) / field_size)
bcd5d979 1661 return AVERROR_INVALIDDATA;
1c02d96f 1662 sc->sample_sizes = av_malloc(entries * sizeof(int));
b6a17df4 1663 if (!sc->sample_sizes)
0d8f0abf
BC
1664 return AVERROR(ENOMEM);
1665
bd27eed6
AC
1666 num_bytes = (entries*field_size+4)>>3;
1667
08a5b4e9 1668 buf = av_malloc(num_bytes+FF_INPUT_BUFFER_PADDING_SIZE);
bd27eed6
AC
1669 if (!buf) {
1670 av_freep(&sc->sample_sizes);
1671 return AVERROR(ENOMEM);
1672 }
1673
b7effd4e 1674 if (avio_read(pb, buf, num_bytes) < num_bytes) {
bd27eed6
AC
1675 av_freep(&sc->sample_sizes);
1676 av_free(buf);
bcd5d979 1677 return AVERROR_INVALIDDATA;
bd27eed6
AC
1678 }
1679
1680 init_get_bits(&gb, buf, 8*num_bytes);
1681
9888ffb1 1682 for (i = 0; i < entries && !pb->eof_reached; i++) {
bd27eed6 1683 sc->sample_sizes[i] = get_bits_long(&gb, field_size);
bc7d0517
MS
1684 sc->data_size += sc->sample_sizes[i];
1685 }
bd27eed6 1686
9888ffb1
LB
1687 sc->sample_count = i;
1688
1689 if (pb->eof_reached)
1690 return AVERROR_EOF;
1691
bd27eed6 1692 av_free(buf);
6cea494e
ZK
1693 return 0;
1694}
1695
ae628ec1 1696static int mov_read_stts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
0147f198 1697{
6a63ff19
BC
1698 AVStream *st;
1699 MOVStreamContext *sc;
568e18b1 1700 unsigned int i, entries;
d957696f
MN
1701 int64_t duration=0;
1702 int64_t total_sample_count=0;
b6a17df4 1703
6a63ff19
BC
1704 if (c->fc->nb_streams < 1)
1705 return 0;
1706 st = c->fc->streams[c->fc->nb_streams-1];
1707 sc = st->priv_data;
1708
b7effd4e
AK
1709 avio_r8(pb); /* version */
1710 avio_rb24(pb); /* flags */
1711 entries = avio_rb32(pb);
0d8f0abf 1712
5a7ba586
LB
1713 av_dlog(c->fc, "track[%i].stts.entries = %i\n",
1714 c->fc->nb_streams-1, entries);
0d8f0abf 1715
6d23d197
AC
1716 if (!entries)
1717 return 0;
1718 if (entries >= UINT_MAX / sizeof(*sc->stts_data))
30c3d976 1719 return AVERROR(EINVAL);
5a7ba586 1720
2620df13 1721 av_free(sc->stts_data);
c3e92a6c 1722 sc->stts_data = av_malloc(entries * sizeof(*sc->stts_data));
c1da59fa 1723 if (!sc->stts_data)
0d8f0abf 1724 return AVERROR(ENOMEM);
5a7ba586 1725
9888ffb1 1726 for (i = 0; i < entries && !pb->eof_reached; i++) {
cd461d48
MN
1727 int sample_duration;
1728 int sample_count;
0147f198 1729
b7effd4e
AK
1730 sample_count=avio_rb32(pb);
1731 sample_duration = avio_rb32(pb);
c2319876
MS
1732 if (sample_count < 0) {
1733 av_log(c->fc, AV_LOG_ERROR, "Invalid sample_count=%d\n", sample_count);
1734 return AVERROR_INVALIDDATA;
1735 }
cd7352d5
MN
1736 sc->stts_data[i].count= sample_count;
1737 sc->stts_data[i].duration= sample_duration;
1738
5a7ba586
LB
1739 av_dlog(c->fc, "sample_count=%d, sample_duration=%d\n",
1740 sample_count, sample_duration);
4e5ef14f 1741
7e815047 1742 duration+=(int64_t)sample_duration*sample_count;
891f64b3 1743 total_sample_count+=sample_count;
891f64b3 1744 }
1745
9888ffb1
LB
1746 sc->stts_count = i;
1747
1748 if (pb->eof_reached)
1749 return AVERROR_EOF;
1750
961e0ccd 1751 st->nb_frames= total_sample_count;
5a7ba586 1752 if (duration)
961e0ccd 1753 st->duration= duration;
7f19bdc2 1754 sc->track_end = duration;
0147f198
FR
1755 return 0;
1756}
1757
ae628ec1 1758static int mov_read_ctts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
c4ac052b 1759{
6a63ff19
BC
1760 AVStream *st;
1761 MOVStreamContext *sc;
c4ac052b
MN
1762 unsigned int i, entries;
1763
6a63ff19
BC
1764 if (c->fc->nb_streams < 1)
1765 return 0;
1766 st = c->fc->streams[c->fc->nb_streams-1];
1767 sc = st->priv_data;
1768
b7effd4e
AK
1769 avio_r8(pb); /* version */
1770 avio_rb24(pb); /* flags */
1771 entries = avio_rb32(pb);
0d8f0abf 1772
dfd2a005 1773 av_dlog(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
0d8f0abf 1774
52401b82
AC
1775 if (!entries)
1776 return 0;
5a7ba586 1777 if (entries >= UINT_MAX / sizeof(*sc->ctts_data))
bcd5d979 1778 return AVERROR_INVALIDDATA;
c3e92a6c 1779 sc->ctts_data = av_malloc(entries * sizeof(*sc->ctts_data));
c1da59fa 1780 if (!sc->ctts_data)
0d8f0abf 1781 return AVERROR(ENOMEM);
4e5ef14f 1782
9888ffb1 1783 for (i = 0; i < entries && !pb->eof_reached; i++) {
b7effd4e
AK
1784 int count =avio_rb32(pb);
1785 int duration =avio_rb32(pb);
70a61ed4
MN
1786
1787 sc->ctts_data[i].count = count;
1788 sc->ctts_data[i].duration= duration;
e7452721
BC
1789 if (duration < 0)
1790 sc->dts_shift = FFMAX(sc->dts_shift, -duration);
c4ac052b 1791 }
e7452721 1792
9888ffb1
LB
1793 sc->ctts_count = i;
1794
1795 if (pb->eof_reached)
1796 return AVERROR_EOF;
1797
dfd2a005 1798 av_dlog(c->fc, "dts shift %d\n", sc->dts_shift);
e7452721 1799
c4ac052b
MN
1800 return 0;
1801}
1802
d17d0ec8
YN
1803static int mov_read_sbgp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1804{
1805 AVStream *st;
1806 MOVStreamContext *sc;
1807 unsigned int i, entries;
1808 uint8_t version;
1809 uint32_t grouping_type;
1810
1811 if (c->fc->nb_streams < 1)
1812 return 0;
1813 st = c->fc->streams[c->fc->nb_streams-1];
1814 sc = st->priv_data;
1815
1816 version = avio_r8(pb); /* version */
1817 avio_rb24(pb); /* flags */
1818 grouping_type = avio_rl32(pb);
1819 if (grouping_type != MKTAG( 'r','a','p',' '))
1820 return 0; /* only support 'rap ' grouping */
1821 if (version == 1)
1822 avio_rb32(pb); /* grouping_type_parameter */
1823
1824 entries = avio_rb32(pb);
1825 if (!entries)
1826 return 0;
1827 if (entries >= UINT_MAX / sizeof(*sc->rap_group))
1828 return AVERROR_INVALIDDATA;
1829 sc->rap_group = av_malloc(entries * sizeof(*sc->rap_group));
1830 if (!sc->rap_group)
1831 return AVERROR(ENOMEM);
1832
1833 for (i = 0; i < entries && !pb->eof_reached; i++) {
1834 sc->rap_group[i].count = avio_rb32(pb); /* sample_count */
1835 sc->rap_group[i].index = avio_rb32(pb); /* group_description_index */
1836 }
1837
1838 sc->rap_group_count = i;
1839
1840 return pb->eof_reached ? AVERROR_EOF : 0;
1841}
1842
1e77810d
BC
1843static void mov_build_index(MOVContext *mov, AVStream *st)
1844{
1845 MOVStreamContext *sc = st->priv_data;
bc5c918e 1846 int64_t current_offset;
1e77810d
BC
1847 int64_t current_dts = 0;
1848 unsigned int stts_index = 0;
1849 unsigned int stsc_index = 0;
1850 unsigned int stss_index = 0;
171a3531 1851 unsigned int stps_index = 0;
1e77810d 1852 unsigned int i, j;
c5898e86 1853 uint64_t stream_size = 0;
1e77810d 1854
baf2ffd3 1855 /* adjust first dts according to edit list */
c3024f9e 1856 if (sc->time_offset && mov->time_scale > 0) {
f33a6a22
YN
1857 if (sc->time_offset < 0)
1858 sc->time_offset = av_rescale(sc->time_offset, sc->time_scale, mov->time_scale);
1859 current_dts = -sc->time_offset;
69e7ad8d 1860 if (sc->ctts_data && sc->stts_data && sc->stts_data[0].duration &&
4af7166f 1861 sc->ctts_data[0].duration / sc->stts_data[0].duration > 16) {
f03a081d
BC
1862 /* more than 16 frames delay, dts are likely wrong
1863 this happens with files created by iMovie */
1864 sc->wrong_dts = 1;
1865 st->codec->has_b_frames = 1;
1866 }
baf2ffd3
BC
1867 }
1868
d3bc61ac 1869 /* only use old uncompressed audio chunk demuxing when stts specifies it */
72415b2a 1870 if (!(st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
d3bc61ac 1871 sc->stts_count == 1 && sc->stts_data[0].duration == 1)) {
1e77810d
BC
1872 unsigned int current_sample = 0;
1873 unsigned int stts_sample = 0;
171a3531 1874 unsigned int sample_size;
1e77810d 1875 unsigned int distance = 0;
d17d0ec8
YN
1876 unsigned int rap_group_index = 0;
1877 unsigned int rap_group_sample = 0;
1878 int rap_group_present = sc->rap_group_count && sc->rap_group;
94c9bf88 1879 int key_off = (sc->keyframes && sc->keyframes[0] > 0) || (sc->stps_data && sc->stps_data[0] > 0);
1e77810d 1880
4b29ed39
BC
1881 current_dts -= sc->dts_shift;
1882
52401b82
AC
1883 if (!sc->sample_count)
1884 return;
4f7c7624 1885 if (sc->sample_count >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries)
987e857f 1886 return;
f369b935
AK
1887 if (av_reallocp_array(&st->index_entries,
1888 st->nb_index_entries + sc->sample_count,
1889 sizeof(*st->index_entries)) < 0) {
1890 st->nb_index_entries = 0;
987e857f 1891 return;
f369b935 1892 }
4f7c7624 1893 st->index_entries_allocated_size = (st->nb_index_entries + sc->sample_count) * sizeof(*st->index_entries);
987e857f 1894
1e77810d
BC
1895 for (i = 0; i < sc->chunk_count; i++) {
1896 current_offset = sc->chunk_offsets[i];
9dd94f83 1897 while (stsc_index + 1 < sc->stsc_count &&
04e06cfa 1898 i + 1 == sc->stsc_data[stsc_index + 1].first)
1e77810d 1899 stsc_index++;
04e06cfa 1900 for (j = 0; j < sc->stsc_data[stsc_index].count; j++) {
171a3531 1901 int keyframe = 0;
1e77810d
BC
1902 if (current_sample >= sc->sample_count) {
1903 av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
f0f2218d 1904 return;
1e77810d 1905 }
171a3531 1906
accea4d9 1907 if (!sc->keyframe_absent && (!sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index])) {
171a3531 1908 keyframe = 1;
1e77810d
BC
1909 if (stss_index + 1 < sc->keyframe_count)
1910 stss_index++;
171a3531
BC
1911 } else if (sc->stps_count && current_sample+key_off == sc->stps_data[stps_index]) {
1912 keyframe = 1;
1913 if (stps_index + 1 < sc->stps_count)
1914 stps_index++;
1e77810d 1915 }
d17d0ec8
YN
1916 if (rap_group_present && rap_group_index < sc->rap_group_count) {
1917 if (sc->rap_group[rap_group_index].index > 0)
1918 keyframe = 1;
1919 if (++rap_group_sample == sc->rap_group[rap_group_index].count) {
1920 rap_group_sample = 0;
1921 rap_group_index++;
1922 }
1923 }
171a3531
BC
1924 if (keyframe)
1925 distance = 0;
1e77810d 1926 sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
5a7ba586 1927 if (sc->pseudo_stream_id == -1 ||
04e06cfa 1928 sc->stsc_data[stsc_index].id - 1 == sc->pseudo_stream_id) {
987e857f
BC
1929 AVIndexEntry *e = &st->index_entries[st->nb_index_entries++];
1930 e->pos = current_offset;
1931 e->timestamp = current_dts;
1932 e->size = sample_size;
1933 e->min_distance = distance;
1934 e->flags = keyframe ? AVINDEX_KEYFRAME : 0;
dfd2a005 1935 av_dlog(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
585dac65
BC
1936 "size %d, distance %d, keyframe %d\n", st->index, current_sample,
1937 current_offset, current_dts, sample_size, distance, keyframe);
1938 }
6c00a9de 1939
1e77810d 1940 current_offset += sample_size;
c5898e86 1941 stream_size += sample_size;
bbe46bc4 1942 current_dts += sc->stts_data[stts_index].duration;
1e77810d
BC
1943 distance++;
1944 stts_sample++;
1945 current_sample++;
1946 if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
1947 stts_sample = 0;
1948 stts_index++;
1949 }
1950 }
1951 }
fedb1eca
BC
1952 if (st->duration > 0)
1953 st->codec->bit_rate = stream_size*8*sc->time_scale/st->duration;
7e69621f 1954 } else {
987e857f 1955 unsigned chunk_samples, total = 0;
7e69621f 1956
987e857f
BC
1957 // compute total chunk count
1958 for (i = 0; i < sc->stsc_count; i++) {
1959 unsigned count, chunk_count;
7e69621f 1960
987e857f 1961 chunk_samples = sc->stsc_data[i].count;
a294a7a1
CEH
1962 if (i != sc->stsc_count - 1 &&
1963 sc->samples_per_frame && chunk_samples % sc->samples_per_frame) {
7e69621f
BC
1964 av_log(mov->fc, AV_LOG_ERROR, "error unaligned chunk\n");
1965 return;
1966 }
1967
987e857f
BC
1968 if (sc->samples_per_frame >= 160) { // gsm
1969 count = chunk_samples / sc->samples_per_frame;
1970 } else if (sc->samples_per_frame > 1) {
1971 unsigned samples = (1024/sc->samples_per_frame)*sc->samples_per_frame;
1972 count = (chunk_samples+samples-1) / samples;
1973 } else {
1974 count = (chunk_samples+1023) / 1024;
1975 }
1976
1977 if (i < sc->stsc_count - 1)
1978 chunk_count = sc->stsc_data[i+1].first - sc->stsc_data[i].first;
1979 else
1980 chunk_count = sc->chunk_count - (sc->stsc_data[i].first - 1);
1981 total += chunk_count * count;
1982 }
1983
dfd2a005 1984 av_dlog(mov->fc, "chunk count %d\n", total);
4f7c7624 1985 if (total >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries)
987e857f 1986 return;
f369b935
AK
1987 if (av_reallocp_array(&st->index_entries,
1988 st->nb_index_entries + total,
1989 sizeof(*st->index_entries)) < 0) {
1990 st->nb_index_entries = 0;
987e857f 1991 return;
f369b935 1992 }
4f7c7624 1993 st->index_entries_allocated_size = (st->nb_index_entries + total) * sizeof(*st->index_entries);
987e857f
BC
1994
1995 // populate index
1996 for (i = 0; i < sc->chunk_count; i++) {
1997 current_offset = sc->chunk_offsets[i];
1998 if (stsc_index + 1 < sc->stsc_count &&
1999 i + 1 == sc->stsc_data[stsc_index + 1].first)
2000 stsc_index++;
2001 chunk_samples = sc->stsc_data[stsc_index].count;
2002
7e69621f 2003 while (chunk_samples > 0) {
987e857f 2004 AVIndexEntry *e;
7e69621f
BC
2005 unsigned size, samples;
2006
2007 if (sc->samples_per_frame >= 160) { // gsm
2008 samples = sc->samples_per_frame;
2009 size = sc->bytes_per_frame;
2010 } else {
2011 if (sc->samples_per_frame > 1) {
2012 samples = FFMIN((1024 / sc->samples_per_frame)*
2013 sc->samples_per_frame, chunk_samples);
2014 size = (samples / sc->samples_per_frame) * sc->bytes_per_frame;
1e77810d 2015 } else {
7e69621f
BC
2016 samples = FFMIN(1024, chunk_samples);
2017 size = samples * sc->sample_size;
1e77810d
BC
2018 }
2019 }
7e69621f 2020
987e857f
BC
2021 if (st->nb_index_entries >= total) {
2022 av_log(mov->fc, AV_LOG_ERROR, "wrong chunk count %d\n", total);
2023 return;
2024 }
2025 e = &st->index_entries[st->nb_index_entries++];
2026 e->pos = current_offset;
2027 e->timestamp = current_dts;
2028 e->size = size;
2029 e->min_distance = 0;
2030 e->flags = AVINDEX_KEYFRAME;
dfd2a005 2031 av_dlog(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", "
117a9190 2032 "size %d, duration %d\n", st->index, i, current_offset, current_dts,
7e69621f
BC
2033 size, samples);
2034
2035 current_offset += size;
bbe46bc4 2036 current_dts += samples;
7e69621f 2037 chunk_samples -= samples;
1e77810d
BC
2038 }
2039 }
2040 }
1e77810d 2041}
bd991df2 2042
9d77a8fa
MS
2043static int mov_open_dref(AVIOContext **pb, char *src, MOVDref *ref,
2044 AVIOInterruptCB *int_cb)
adeb9071 2045{
6a245905
MN
2046 /* try relative path, we do not try the absolute because it can leak information about our
2047 system to an attacker */
adeb9071
BC
2048 if (ref->nlvl_to > 0 && ref->nlvl_from > 0) {
2049 char filename[1024];
2050 char *src_path;
2051 int i, l;
2052
2053 /* find a source dir */
2054 src_path = strrchr(src, '/');
2055 if (src_path)
2056 src_path++;
2057 else
2058 src_path = src;
2059
2060 /* find a next level down to target */
2061 for (i = 0, l = strlen(ref->path) - 1; l >= 0; l--)
2062 if (ref->path[l] == '/') {
2063 if (i == ref->nlvl_to - 1)
2064 break;
2065 else
2066 i++;
2067 }
2068
2069 /* compose filename if next level down to target was found */
bbdf0d22 2070 if (i == ref->nlvl_to - 1 && src_path - src < sizeof(filename)) {
adeb9071
BC
2071 memcpy(filename, src, src_path - src);
2072 filename[src_path - src] = 0;
2073
2074 for (i = 1; i < ref->nlvl_from; i++)
2075 av_strlcat(filename, "../", 1024);
2076
2077 av_strlcat(filename, ref->path + l + 1, 1024);
2078
9d77a8fa 2079 if (!avio_open2(pb, filename, AVIO_FLAG_READ, int_cb, NULL))
adeb9071
BC
2080 return 0;
2081 }
2082 }
2083
2084 return AVERROR(ENOENT);
628b16f4 2085}
adeb9071 2086
ae628ec1 2087static int mov_read_trak(MOVContext *c, AVIOContext *pb, MOVAtom atom)
5ca1d879
ZK
2088{
2089 AVStream *st;
2090 MOVStreamContext *sc;
bd991df2 2091 int ret;
5ca1d879 2092
84ad31ff 2093 st = avformat_new_stream(c->fc, NULL);
3efe8848 2094 if (!st) return AVERROR(ENOMEM);
84ad31ff 2095 st->id = c->fc->nb_streams;
9a630c25 2096 sc = av_mallocz(sizeof(MOVStreamContext));
2922cbdb 2097 if (!sc) return AVERROR(ENOMEM);
5ca1d879 2098
5ca1d879 2099 st->priv_data = sc;
72415b2a 2100 st->codec->codec_type = AVMEDIA_TYPE_DATA;
64d50fa5 2101 sc->ffindex = st->index;
5ca1d879 2102
bd991df2
BC
2103 if ((ret = mov_read_default(c, pb, atom)) < 0)
2104 return ret;
2105
2106 /* sanity checks */
6c00a9de
BC
2107 if (sc->chunk_count && (!sc->stts_count || !sc->stsc_count ||
2108 (!sc->sample_size && !sc->sample_count))) {
6282c5f4
BC
2109 av_log(c->fc, AV_LOG_ERROR, "stream %d, missing mandatory atoms, broken header\n",
2110 st->index);
bd991df2
BC
2111 return 0;
2112 }
6c00a9de 2113
c3024f9e 2114 if (sc->time_scale <= 0) {
507330b9 2115 av_log(c->fc, AV_LOG_WARNING, "stream %d, timescale not set\n", st->index);
6c00a9de 2116 sc->time_scale = c->time_scale;
c3024f9e 2117 if (sc->time_scale <= 0)
507330b9
BC
2118 sc->time_scale = 1;
2119 }
6c00a9de 2120
c3f9ebf7 2121 avpriv_set_pts_info(st, 64, 1, sc->time_scale);
bd991df2 2122
bd991df2
BC
2123 mov_build_index(c, st);
2124
2125 if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) {
adeb9071 2126 MOVDref *dref = &sc->drefs[sc->dref_id - 1];
9d77a8fa 2127 if (mov_open_dref(&sc->pb, c->fc->filename, dref, &c->fc->interrupt_callback) < 0)
adeb9071
BC
2128 av_log(c->fc, AV_LOG_ERROR,
2129 "stream %d, error opening alias: path='%s', dir='%s', "
2130 "filename='%s', volume='%s', nlvl_from=%d, nlvl_to=%d\n",
2131 st->index, dref->path, dref->dir, dref->filename,
2132 dref->volume, dref->nlvl_from, dref->nlvl_to);
bd991df2
BC
2133 } else
2134 sc->pb = c->fc->pb;
2135
72415b2a 2136 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
525fcb27
AW
2137 if (!st->sample_aspect_ratio.num &&
2138 (st->codec->width != sc->width || st->codec->height != sc->height)) {
2139 st->sample_aspect_ratio = av_d2q(((double)st->codec->height * sc->width) /
2140 ((double)st->codec->width * sc->height), INT_MAX);
c3aeaa54 2141 }
c9566115
BC
2142 }
2143
ecf442a5
RD
2144 // done for ai5q, ai52, ai55, ai1q, ai12 and ai15.
2145 if (!st->codec->extradata_size && st->codec->codec_id == AV_CODEC_ID_H264 &&
2146 TAG_IS_AVCI(st->codec->codec_tag)) {
2147 ret = ff_generate_avci_extradata(st);
2148 if (ret < 0)
2149 return ret;
2150 }
2151
bd991df2 2152 switch (st->codec->codec_id) {
b250f9c6 2153#if CONFIG_H261_DECODER
36ef5369 2154 case AV_CODEC_ID_H261:
bd991df2 2155#endif
b250f9c6 2156#if CONFIG_H263_DECODER
36ef5369 2157 case AV_CODEC_ID_H263:
bd991df2 2158#endif
b250f9c6 2159#if CONFIG_MPEG4_DECODER
36ef5369 2160 case AV_CODEC_ID_MPEG4:
bd991df2 2161#endif
6c00a9de 2162 st->codec->width = 0; /* let decoder init width/height */
bd991df2
BC
2163 st->codec->height= 0;
2164 break;
bd991df2 2165 }
f9900374
BC
2166
2167 /* Do not need those anymore. */
2168 av_freep(&sc->chunk_offsets);
04e06cfa 2169 av_freep(&sc->stsc_data);
f9900374
BC
2170 av_freep(&sc->sample_sizes);
2171 av_freep(&sc->keyframes);
2172 av_freep(&sc->stts_data);
171a3531 2173 av_freep(&sc->stps_data);
d17d0ec8 2174 av_freep(&sc->rap_group);
f9900374 2175
bd991df2 2176 return 0;
5ca1d879
ZK
2177}
2178
ae628ec1 2179static int mov_read_ilst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
51c15201
BC
2180{
2181 int ret;
2182 c->itunes_metadata = 1;
2183 ret = mov_read_default(c, pb, atom);
2184 c->itunes_metadata = 0;
2185 return ret;
2186}
2187
ae628ec1 2188static int mov_read_meta(MOVContext *c, AVIOContext *pb, MOVAtom atom)
51c15201 2189{
df8843c6 2190 while (atom.size > 8) {
b7effd4e 2191 uint32_t tag = avio_rl32(pb);
df8843c6
BC
2192 atom.size -= 4;
2193 if (tag == MKTAG('h','d','l','r')) {
6b4aa5da 2194 avio_seek(pb, -8, SEEK_CUR);
df8843c6
BC
2195 atom.size += 8;
2196 return mov_read_default(c, pb, atom);
2197 }
2198 }
2199 return 0;
51c15201
BC
2200}
2201
ae628ec1 2202static int mov_read_tkhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
5ca1d879 2203{
ec072669
JS
2204 int i;
2205 int width;
2206 int height;
2207 int64_t disp_transform[2];
2208 int display_matrix[3][2];
6a63ff19
BC
2209 AVStream *st;
2210 MOVStreamContext *sc;
2211 int version;
1f70a5ad 2212 int flags;
6a63ff19
BC
2213
2214 if (c->fc->nb_streams < 1)
2215 return 0;
2216 st = c->fc->streams[c->fc->nb_streams-1];
2217 sc = st->priv_data;
5ca1d879 2218
b7effd4e 2219 version = avio_r8(pb);
1f70a5ad
JS
2220 flags = avio_rb24(pb);
2221 st->disposition |= (flags & MOV_TKHD_FLAG_ENABLED) ? AV_DISPOSITION_DEFAULT : 0;
5ca1d879 2222
1175561e 2223 if (version == 1) {
b7effd4e
AK
2224 avio_rb64(pb);
2225 avio_rb64(pb);
1175561e 2226 } else {
b7effd4e
AK
2227 avio_rb32(pb); /* creation time */
2228 avio_rb32(pb); /* modification time */
1175561e 2229 }
b7effd4e
AK
2230 st->id = (int)avio_rb32(pb); /* track id (NOT 0 !)*/
2231 avio_rb32(pb); /* reserved */
fcdd622c 2232
117a9190 2233 /* highlevel (considering edits) duration in movie timebase */
b7effd4e
AK
2234 (version == 1) ? avio_rb64(pb) : avio_rb32(pb);
2235 avio_rb32(pb); /* reserved */
2236 avio_rb32(pb); /* reserved */
5ca1d879 2237
b7effd4e
AK
2238 avio_rb16(pb); /* layer */
2239 avio_rb16(pb); /* alternate group */
2240 avio_rb16(pb); /* volume */
2241 avio_rb16(pb); /* reserved */
5ca1d879 2242
ec072669
JS
2243 //read in the display matrix (outlined in ISO 14496-12, Section 6.2.2)
2244 // they're kept in fixed point format through all calculations
2245 // ignore u,v,z b/c we don't need the scale factor to calc aspect ratio
2246 for (i = 0; i < 3; i++) {
b7effd4e
AK
2247 display_matrix[i][0] = avio_rb32(pb); // 16.16 fixed point
2248 display_matrix[i][1] = avio_rb32(pb); // 16.16 fixed point
2249 avio_rb32(pb); // 2.30 fixed point (not used)
ec072669 2250 }
5ca1d879 2251
b7effd4e
AK
2252 width = avio_rb32(pb); // 16.16 fixed point track width
2253 height = avio_rb32(pb); // 16.16 fixed point track height
6cdbff63
DC
2254 sc->width = width >> 16;
2255 sc->height = height >> 16;
ec072669 2256
d862fce7 2257 // transform the display width/height according to the matrix
ec072669 2258 // skip this if the display matrix is the default identity matrix
d862fce7 2259 // or if it is rotating the picture, ex iPhone 3GS
ec072669
JS
2260 // to keep the same scale, use [width height 1<<16]
2261 if (width && height &&
d862fce7
BC
2262 ((display_matrix[0][0] != 65536 ||
2263 display_matrix[1][1] != 65536) &&
2264 !display_matrix[0][1] &&
2265 !display_matrix[1][0] &&
2266 !display_matrix[2][0] && !display_matrix[2][1])) {
ec072669
JS
2267 for (i = 0; i < 2; i++)
2268 disp_transform[i] =
2269 (int64_t) width * display_matrix[0][i] +
2270 (int64_t) height * display_matrix[1][i] +
2271 ((int64_t) display_matrix[2][i] << 16);
2272
2273 //sample aspect ratio is new width/height divided by old width/height
59729451 2274 st->sample_aspect_ratio = av_d2q(
ec072669
JS
2275 ((double) disp_transform[0] * height) /
2276 ((double) disp_transform[1] * width), INT_MAX);
2277 }
5ca1d879
ZK
2278 return 0;
2279}
2280
ae628ec1 2281static int mov_read_tfhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
61aedb0f
BC
2282{
2283 MOVFragment *frag = &c->fragment;
2284 MOVTrackExt *trex = NULL;
2285 int flags, track_id, i;
2286
b7effd4e
AK
2287 avio_r8(pb); /* version */
2288 flags = avio_rb24(pb);
61aedb0f 2289
b7effd4e 2290 track_id = avio_rb32(pb);
63581eb1 2291 if (!track_id)
bcd5d979 2292 return AVERROR_INVALIDDATA;
61aedb0f
BC
2293 frag->track_id = track_id;
2294 for (i = 0; i < c->trex_count; i++)
2295 if (c->trex_data[i].track_id == frag->track_id) {
2296 trex = &c->trex_data[i];
2297 break;
2298 }
2299 if (!trex) {
2300 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding trex\n");
bcd5d979 2301 return AVERROR_INVALIDDATA;
61aedb0f
BC
2302 }
2303
73328f24
MS
2304 frag->base_data_offset = flags & MOV_TFHD_BASE_DATA_OFFSET ?
2305 avio_rb64(pb) : frag->moof_offset;
2306 frag->stsd_id = flags & MOV_TFHD_STSD_ID ? avio_rb32(pb) : trex->stsd_id;
2307
2308 frag->duration = flags & MOV_TFHD_DEFAULT_DURATION ?
2309 avio_rb32(pb) : trex->duration;
2310 frag->size = flags & MOV_TFHD_DEFAULT_SIZE ?
2311 avio_rb32(pb) : trex->size;
2312 frag->flags = flags & MOV_TFHD_DEFAULT_FLAGS ?
2313 avio_rb32(pb) : trex->flags;
dfd2a005 2314 av_dlog(c->fc, "frag flags 0x%x\n", frag->flags);
61aedb0f
BC
2315 return 0;
2316}
2317
ae628ec1 2318static int mov_read_chap(MOVContext *c, AVIOContext *pb, MOVAtom atom)
7221579b 2319{
b7effd4e 2320 c->chapter_track = avio_rb32(pb);
7221579b
DC
2321 return 0;
2322}
2323
ae628ec1 2324static int mov_read_trex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
61aedb0f
BC
2325{
2326 MOVTrackExt *trex;
f369b935 2327 int err;
61aedb0f
BC
2328
2329 if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data))
bcd5d979 2330 return AVERROR_INVALIDDATA;
f369b935
AK
2331 if ((err = av_reallocp_array(&c->trex_data, c->trex_count + 1,
2332 sizeof(*c->trex_data))) < 0) {
2333 c->trex_count = 0;
2334 return err;
2335 }
61aedb0f 2336 trex = &c->trex_data[c->trex_count++];
b7effd4e
AK
2337 avio_r8(pb); /* version */
2338 avio_rb24(pb); /* flags */
2339 trex->track_id = avio_rb32(pb);
2340 trex->stsd_id = avio_rb32(pb);
2341 trex->duration = avio_rb32(pb);
2342 trex->size = avio_rb32(pb);
2343 trex->flags = avio_rb32(pb);
61aedb0f
BC
2344 return 0;
2345}
2346
ae628ec1 2347static int mov_read_trun(MOVContext *c, AVIOContext *pb, MOVAtom atom)
61aedb0f
BC
2348{
2349 MOVFragment *frag = &c->fragment;
63581eb1 2350 AVStream *st = NULL;
44e43aab 2351 MOVStreamContext *sc;
45a811b5 2352 MOVStts *ctts_data;
61aedb0f
BC
2353 uint64_t offset;
2354 int64_t dts;
2355 int data_offset = 0;
2356 unsigned entries, first_sample_flags = frag->flags;
f369b935 2357 int flags, distance, i, found_keyframe = 0, err;
61aedb0f 2358
63581eb1
AC
2359 for (i = 0; i < c->fc->nb_streams; i++) {
2360 if (c->fc->streams[i]->id == frag->track_id) {
2361 st = c->fc->streams[i];
2362 break;
2363 }
2364 }
2365 if (!st) {
2366 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id);
bcd5d979 2367 return AVERROR_INVALIDDATA;
63581eb1 2368 }
44e43aab 2369 sc = st->priv_data;
61aedb0f
BC
2370 if (sc->pseudo_stream_id+1 != frag->stsd_id)
2371 return 0;
b7effd4e
AK
2372 avio_r8(pb); /* version */
2373 flags = avio_rb24(pb);
2374 entries = avio_rb32(pb);
dfd2a005 2375 av_dlog(c->fc, "flags 0x%x entries %d\n", flags, entries);
45a811b5
YN
2376
2377 /* Always assume the presence of composition time offsets.
2378 * Without this assumption, for instance, we cannot deal with a track in fragmented movies that meet the following.
2379 * 1) in the initial movie, there are no samples.
2380 * 2) in the first movie fragment, there is only one sample without composition time offset.
2381 * 3) in the subsequent movie fragments, there are samples with composition time offset. */
2382 if (!sc->ctts_count && sc->sample_count)
2383 {
2384 /* Complement ctts table if moov atom doesn't have ctts atom. */
b698542a 2385 ctts_data = av_realloc(NULL, sizeof(*sc->ctts_data));
0d8f0abf 2386 if (!ctts_data)
61aedb0f 2387 return AVERROR(ENOMEM);
0d8f0abf 2388 sc->ctts_data = ctts_data;
45a811b5
YN
2389 sc->ctts_data[sc->ctts_count].count = sc->sample_count;
2390 sc->ctts_data[sc->ctts_count].duration = 0;
2391 sc->ctts_count++;
61aedb0f 2392 }
45a811b5 2393 if ((uint64_t)entries+sc->ctts_count >= UINT_MAX/sizeof(*sc->ctts_data))
bcd5d979 2394 return AVERROR_INVALIDDATA;
f369b935
AK
2395 if ((err = av_reallocp_array(&sc->ctts_data, entries + sc->ctts_count,
2396 sizeof(*sc->ctts_data))) < 0) {
2397 sc->ctts_count = 0;
2398 return err;
2399 }
3eec23f3
MS
2400 if (flags & MOV_TRUN_DATA_OFFSET) data_offset = avio_rb32(pb);
2401 if (flags & MOV_TRUN_FIRST_SAMPLE_FLAGS) first_sample_flags = avio_rb32(pb);
7f19bdc2 2402 dts = sc->track_end - sc->time_offset;
61aedb0f
BC
2403 offset = frag->base_data_offset + data_offset;
2404 distance = 0;
dfd2a005 2405 av_dlog(c->fc, "first sample flags 0x%x\n", first_sample_flags);
9888ffb1 2406 for (i = 0; i < entries && !pb->eof_reached; i++) {
61aedb0f
BC
2407 unsigned sample_size = frag->size;
2408 int sample_flags = i ? frag->flags : first_sample_flags;
2409 unsigned sample_duration = frag->duration;
a5c50913 2410 int keyframe = 0;
61aedb0f 2411
3eec23f3
MS
2412 if (flags & MOV_TRUN_SAMPLE_DURATION) sample_duration = avio_rb32(pb);
2413 if (flags & MOV_TRUN_SAMPLE_SIZE) sample_size = avio_rb32(pb);
2414 if (flags & MOV_TRUN_SAMPLE_FLAGS) sample_flags = avio_rb32(pb);
45a811b5 2415 sc->ctts_data[sc->ctts_count].count = 1;
3eec23f3
MS
2416 sc->ctts_data[sc->ctts_count].duration = (flags & MOV_TRUN_SAMPLE_CTS) ?
2417 avio_rb32(pb) : 0;
45a811b5 2418 sc->ctts_count++;
a5c50913
MS
2419 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
2420 keyframe = 1;
2421 else if (!found_keyframe)
2422 keyframe = found_keyframe =
2423 !(sample_flags & (MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC |
2424 MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES));
2425 if (keyframe)
61aedb0f
BC
2426 distance = 0;
2427 av_add_index_entry(st, offset, dts, sample_size, distance,
2428 keyframe ? AVINDEX_KEYFRAME : 0);
dfd2a005 2429 av_dlog(c->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
61aedb0f
BC
2430 "size %d, distance %d, keyframe %d\n", st->index, sc->sample_count+i,
2431 offset, dts, sample_size, distance, keyframe);
2432 distance++;
bbe46bc4 2433 dts += sample_duration;
61aedb0f 2434 offset += sample_size;
bc7d0517 2435 sc->data_size += sample_size;
61aedb0f 2436 }
9888ffb1
LB
2437
2438 if (pb->eof_reached)
2439 return AVERROR_EOF;
2440
61aedb0f 2441 frag->moof_offset = offset;
7f19bdc2 2442 st->duration = sc->track_end = dts + sc->time_offset;
61aedb0f
BC
2443 return 0;
2444}
2445
5ca1d879
ZK
2446/* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
2447/* like the files created with Adobe Premiere 5.0, for samples see */
2448/* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
ae628ec1 2449static int mov_read_wide(MOVContext *c, AVIOContext *pb, MOVAtom atom)
5ca1d879
ZK
2450{
2451 int err;
5ca1d879 2452
5ca1d879
ZK
2453 if (atom.size < 8)
2454 return 0; /* continue */
b7effd4e 2455 if (avio_rb32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
45a8a02a 2456 avio_skip(pb, atom.size - 4);
5ca1d879
ZK
2457 return 0;
2458 }
b7effd4e 2459 atom.type = avio_rl32(pb);
5ca1d879 2460 atom.size -= 8;
1c126b4f 2461 if (atom.type != MKTAG('m','d','a','t')) {
45a8a02a 2462 avio_skip(pb, atom.size);
5ca1d879
ZK
2463 return 0;
2464 }
2465 err = mov_read_mdat(c, pb, atom);
5ca1d879
ZK
2466 return err;
2467}
2468
ae628ec1 2469static int mov_read_cmov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
0147f198 2470{
b250f9c6 2471#if CONFIG_ZLIB
ae628ec1 2472 AVIOContext ctx;
b6a17df4
ZK
2473 uint8_t *cmov_data;
2474 uint8_t *moov_data; /* uncompressed data */
0147f198 2475 long cmov_len, moov_len;
6f04eb1e 2476 int ret = -1;
b6a17df4 2477
b7effd4e
AK
2478 avio_rb32(pb); /* dcom atom */
2479 if (avio_rl32(pb) != MKTAG('d','c','o','m'))
bcd5d979 2480 return AVERROR_INVALIDDATA;
b7effd4e 2481 if (avio_rl32(pb) != MKTAG('z','l','i','b')) {
f3592353 2482 av_log(c->fc, AV_LOG_ERROR, "unknown compression for cmov atom !");
bcd5d979 2483 return AVERROR_INVALIDDATA;
0147f198 2484 }
b7effd4e
AK
2485 avio_rb32(pb); /* cmvd atom */
2486 if (avio_rl32(pb) != MKTAG('c','m','v','d'))
bcd5d979 2487 return AVERROR_INVALIDDATA;
b7effd4e 2488 moov_len = avio_rb32(pb); /* uncompressed size */
5ca1d879 2489 cmov_len = atom.size - 6 * 4;
5cd62665 2490
9a630c25 2491 cmov_data = av_malloc(cmov_len);
0147f198 2492 if (!cmov_data)
0d8f0abf 2493 return AVERROR(ENOMEM);
9a630c25 2494 moov_data = av_malloc(moov_len);
0147f198
FR
2495 if (!moov_data) {
2496 av_free(cmov_data);
0d8f0abf 2497 return AVERROR(ENOMEM);
0147f198 2498 }
b7effd4e 2499 avio_read(pb, cmov_data, cmov_len);
5a7ba586 2500 if (uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
6f04eb1e 2501 goto free_and_return;
5a7ba586 2502 if (ffio_init_context(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
6f04eb1e 2503 goto free_and_return;
1c126b4f 2504 atom.type = MKTAG('m','o','o','v');
5ca1d879
ZK
2505 atom.size = moov_len;
2506 ret = mov_read_default(c, &ctx, atom);
6f04eb1e 2507free_and_return:
0147f198
FR
2508 av_free(moov_data);
2509 av_free(cmov_data);
2510 return ret;
d966b2f0
BC
2511#else
2512 av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
bcd5d979 2513 return AVERROR(ENOSYS);
0147f198 2514#endif
d966b2f0 2515}
0147f198 2516
baf25c9d 2517/* edit list atom */
ae628ec1 2518static int mov_read_elst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
baf25c9d 2519{
1c4bf2ec 2520 MOVStreamContext *sc;
5f0bb0ba 2521 int i, edit_count, version;
e0977c80 2522
1c4bf2ec
BC
2523 if (c->fc->nb_streams < 1)
2524 return 0;
2525 sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
2526
5f0bb0ba 2527 version = avio_r8(pb); /* version */
b7effd4e
AK
2528 avio_rb24(pb); /* flags */
2529 edit_count = avio_rb32(pb); /* entries */
e0977c80 2530
5a7ba586 2531 if ((uint64_t)edit_count*12+8 > atom.size)
bcd5d979 2532 return AVERROR_INVALIDDATA;
53e099de 2533
5a7ba586 2534 for (i=0; i<edit_count; i++){
5f0bb0ba
YN
2535 int64_t time;
2536 int64_t duration;
2537 if (version == 1) {
2538 duration = avio_rb64(pb);
2539 time = avio_rb64(pb);
2540 } else {
2541 duration = avio_rb32(pb); /* segment duration */
ae88e9cf 2542 time = (int32_t)avio_rb32(pb); /* media time */
5f0bb0ba 2543 }
b7effd4e 2544 avio_rb32(pb); /* Media rate */
2ac736a6
RD
2545 if (i == 0 && time >= -1) {
2546 sc->time_offset = time != -1 ? time : -duration;
a5929abe 2547 }
e0977c80 2548 }
baf2ffd3 2549
5a7ba586 2550 if (edit_count > 1)
baf2ffd3
BC
2551 av_log(c->fc, AV_LOG_WARNING, "multiple edit list entries, "
2552 "a/v desync might occur, patch welcome\n");
2553
dfd2a005 2554 av_dlog(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, edit_count);
e0977c80 2555 return 0;
baf25c9d
GC
2556}
2557
6cea494e 2558static const MOVParseTableEntry mov_default_parse_table[] = {
d4fdba0d 2559{ MKTAG('a','v','s','s'), mov_read_extradata },
1cf9f6ed 2560{ MKTAG('c','h','p','l'), mov_read_chpl },
1c126b4f
BC
2561{ MKTAG('c','o','6','4'), mov_read_stco },
2562{ MKTAG('c','t','t','s'), mov_read_ctts }, /* composition time to sample */
2563{ MKTAG('d','i','n','f'), mov_read_default },
2564{ MKTAG('d','r','e','f'), mov_read_dref },
2565{ MKTAG('e','d','t','s'), mov_read_default },
2566{ MKTAG('e','l','s','t'), mov_read_elst },
2567{ MKTAG('e','n','d','a'), mov_read_enda },
4bf3c8f2 2568{ MKTAG('f','i','e','l'), mov_read_fiel },
1c126b4f
BC
2569{ MKTAG('f','t','y','p'), mov_read_ftyp },
2570{ MKTAG('g','l','b','l'), mov_read_glbl },
2571{ MKTAG('h','d','l','r'), mov_read_hdlr },
51c15201 2572{ MKTAG('i','l','s','t'), mov_read_ilst },
1c126b4f
BC
2573{ MKTAG('j','p','2','h'), mov_read_extradata },
2574{ MKTAG('m','d','a','t'), mov_read_mdat },
2575{ MKTAG('m','d','h','d'), mov_read_mdhd },
2576{ MKTAG('m','d','i','a'), mov_read_default },
51c15201 2577{ MKTAG('m','e','t','a'), mov_read_meta },
1c126b4f
BC
2578{ MKTAG('m','i','n','f'), mov_read_default },
2579{ MKTAG('m','o','o','f'), mov_read_moof },
2580{ MKTAG('m','o','o','v'), mov_read_moov },
2581{ MKTAG('m','v','e','x'), mov_read_default },
2582{ MKTAG('m','v','h','d'), mov_read_mvhd },
2583{ MKTAG('S','M','I',' '), mov_read_smi }, /* Sorenson extension ??? */
2584{ MKTAG('a','l','a','c'), mov_read_extradata }, /* alac specific atom */
2585{ MKTAG('a','v','c','C'), mov_read_glbl },
6da54074 2586{ MKTAG('p','a','s','p'), mov_read_pasp },
1c126b4f
BC
2587{ MKTAG('s','t','b','l'), mov_read_default },
2588{ MKTAG('s','t','c','o'), mov_read_stco },
171a3531 2589{ MKTAG('s','t','p','s'), mov_read_stps },
653d7aeb 2590{ MKTAG('s','t','r','f'), mov_read_strf },
1c126b4f
BC
2591{ MKTAG('s','t','s','c'), mov_read_stsc },
2592{ MKTAG('s','t','s','d'), mov_read_stsd }, /* sample description */
2593{ MKTAG('s','t','s','s'), mov_read_stss }, /* sync sample */
2594{ MKTAG('s','t','s','z'), mov_read_stsz }, /* sample size */
2595{ MKTAG('s','t','t','s'), mov_read_stts },
bd27eed6 2596{ MKTAG('s','t','z','2'), mov_read_stsz }, /* compact sample size */
1c126b4f
BC
2597{ MKTAG('t','k','h','d'), mov_read_tkhd }, /* track header */
2598{ MKTAG('t','f','h','d'), mov_read_tfhd }, /* track fragment header */
2599{ MKTAG('t','r','a','k'), mov_read_trak },
2600{ MKTAG('t','r','a','f'), mov_read_default },
7221579b
DC
2601{ MKTAG('t','r','e','f'), mov_read_default },
2602{ MKTAG('c','h','a','p'), mov_read_chap },
1c126b4f
BC
2603{ MKTAG('t','r','e','x'), mov_read_trex },
2604{ MKTAG('t','r','u','n'), mov_read_trun },
86b0affd 2605{ MKTAG('u','d','t','a'), mov_read_default },
1c126b4f
BC
2606{ MKTAG('w','a','v','e'), mov_read_wave },
2607{ MKTAG('e','s','d','s'), mov_read_esds },
bdecdd2b 2608{ MKTAG('d','a','c','3'), mov_read_dac3 }, /* AC-3 info */
546adc1f 2609{ MKTAG('d','e','c','3'), mov_read_dec3 }, /* EAC-3 info */
1c126b4f 2610{ MKTAG('w','i','d','e'), mov_read_wide }, /* place holder */
85e9e3a9 2611{ MKTAG('w','f','e','x'), mov_read_wfex },
1c126b4f 2612{ MKTAG('c','m','o','v'), mov_read_cmov },
1fdf18f4 2613{ MKTAG('c','h','a','n'), mov_read_chan }, /* channel layout */
89415b8e 2614{ MKTAG('d','v','c','1'), mov_read_dvc1 },
d17d0ec8 2615{ MKTAG('s','b','g','p'), mov_read_sbgp },
ea29f965 2616{ MKTAG('h','v','c','C'), mov_read_glbl },
bcfe2ba0 2617{ 0, NULL }
6cea494e
ZK
2618};
2619
1ce1e636
RB
2620static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2621{
2622 int64_t total_size = 0;
2623 MOVAtom a;
2624 int i;
2625
2626 if (atom.size < 0)
2627 atom.size = INT64_MAX;
2628 while (total_size + 8 < atom.size && !pb->eof_reached) {
2629 int (*parse)(MOVContext*, AVIOContext*, MOVAtom) = NULL;
2630 a.size = atom.size;
2631 a.type=0;
2632 if (atom.size >= 8) {
2633 a.size = avio_rb32(pb);
2634 a.type = avio_rl32(pb);
2635 }
2636 av_dlog(c->fc, "type: %08x '%.4s' parent:'%.4s' sz: %"PRId64" %"PRId64" %"PRId64"\n",
2637 a.type, (char*)&a.type, (char*)&atom.type, a.size, total_size, atom.size);
2638 total_size += 8;
2639 if (a.size == 1) { /* 64 bit extended size */
2640 a.size = avio_rb64(pb) - 8;
2641 total_size += 8;
2642 }
2643 if (a.size == 0) {
2644 a.size = atom.size - total_size;
2645 if (a.size <= 8)
2646 break;
2647 }
2648 a.size -= 8;
2649 if (a.size < 0)
2650 break;
2651 a.size = FFMIN(a.size, atom.size - total_size);
2652
2653 for (i = 0; mov_default_parse_table[i].type; i++)
2654 if (mov_default_parse_table[i].type == a.type) {
2655 parse = mov_default_parse_table[i].parse;
2656 break;
2657 }
2658
2659 // container is user data
2660 if (!parse && (atom.type == MKTAG('u','d','t','a') ||
2661 atom.type == MKTAG('i','l','s','t')))
2662 parse = mov_read_udta_string;
2663
2664 if (!parse) { /* skip leaf atoms data */
2665 avio_skip(pb, a.size);
2666 } else {
2667 int64_t start_pos = avio_tell(pb);
2668 int64_t left;
2669 int err = parse(c, pb, a);
2670 if (err < 0)
2671 return err;
2672 if (c->found_moov && c->found_mdat &&
2673 ((!pb->seekable || c->fc->flags & AVFMT_FLAG_IGNIDX) ||
2674 start_pos + a.size == avio_size(pb))) {
2675 if (!pb->seekable || c->fc->flags & AVFMT_FLAG_IGNIDX)
2676 c->next_root_atom = start_pos + a.size;
2677 return 0;
2678 }
2679 left = a.size - avio_tell(pb) + start_pos;
2680 if (left > 0) /* skip garbage at atom end */
2681 avio_skip(pb, left);
5b4eb243
MS
2682 else if (left < 0) {
2683 av_log(c->fc, AV_LOG_WARNING,
2684 "overread end of atom '%.4s' by %"PRId64" bytes\n",
2685 (char*)&a.type, -left);
2686 avio_seek(pb, left, SEEK_CUR);
2687 }
1ce1e636
RB
2688 }
2689
2690 total_size += a.size;
2691 }
2692
2693 if (total_size < atom.size && atom.size < 0x7ffff)
2694 avio_skip(pb, atom.size - total_size);
2695
2696 return 0;
2697}
2698
c9a65ca8
FB
2699static int mov_probe(AVProbeData *p)
2700{
0e7eed09
FB
2701 unsigned int offset;
2702 uint32_t tag;
2497479f 2703 int score = 0;
3ffe3793 2704
c9a65ca8 2705 /* check file header */
0e7eed09 2706 offset = 0;
5a7ba586 2707 for (;;) {
0e7eed09
FB
2708 /* ignore invalid offset */
2709 if ((offset + 8) > (unsigned int)p->buf_size)
2497479f 2710 return score;
fead30d4 2711 tag = AV_RL32(p->buf + offset + 4);
0e7eed09 2712 switch(tag) {
2497479f 2713 /* check for obvious tags */
1c126b4f
BC
2714 case MKTAG('j','P',' ',' '): /* jpeg 2000 signature */
2715 case MKTAG('m','o','o','v'):
2716 case MKTAG('m','d','a','t'):
2717 case MKTAG('p','n','o','t'): /* detect movs with preview pics like ew.mov and april.mov */
2718 case MKTAG('u','d','t','a'): /* Packet Video PVAuthor adds this and a lot of more junk */
40e7aaa3 2719 case MKTAG('f','t','y','p'):
3ffe3793 2720 return AVPROBE_SCORE_MAX;
2497479f 2721 /* those are more common words, so rate then a bit less */
1c126b4f
BC
2722 case MKTAG('e','d','i','w'): /* xdcam files have reverted first tags */
2723 case MKTAG('w','i','d','e'):
2724 case MKTAG('f','r','e','e'):
2725 case MKTAG('j','u','n','k'):
2726 case MKTAG('p','i','c','t'):
2497479f 2727 return AVPROBE_SCORE_MAX - 5;
5469b788 2728 case MKTAG(0x82,0x82,0x7f,0x7d):
1c126b4f
BC
2729 case MKTAG('s','k','i','p'):
2730 case MKTAG('u','u','i','d'):
2731 case MKTAG('p','r','f','l'):
fead30d4 2732 offset = AV_RB32(p->buf+offset) + offset;
2497479f 2733 /* if we only find those cause probedata is too small at least rate them */
e0f8be64 2734 score = AVPROBE_SCORE_EXTENSION;
0e7eed09
FB
2735 break;
2736 default:
2737 /* unrecognized tag */
2497479f 2738 return score;
0e7eed09 2739 }
3ffe3793 2740 }
c9a65ca8
FB
2741}
2742
7221579b
DC
2743// must be done after parsing all trak because there's no order requirement
2744static void mov_read_chapters(AVFormatContext *s)
2745{
2746 MOVContext *mov = s->priv_data;
2747 AVStream *st = NULL;
2748 MOVStreamContext *sc;
2749 int64_t cur_pos;
225b6d7f 2750 int i;
7221579b
DC
2751
2752 for (i = 0; i < s->nb_streams; i++)
2753 if (s->streams[i]->id == mov->chapter_track) {
2754 st = s->streams[i];
2755 break;
2756 }
2757 if (!st) {
2758 av_log(s, AV_LOG_ERROR, "Referenced QT chapter track not found\n");
2759 return;
2760 }
2761
2762 st->discard = AVDISCARD_ALL;
2763 sc = st->priv_data;
a2704c97 2764 cur_pos = avio_tell(sc->pb);
7221579b
DC
2765
2766 for (i = 0; i < st->nb_index_entries; i++) {
2767 AVIndexEntry *sample = &st->index_entries[i];
2768 int64_t end = i+1 < st->nb_index_entries ? st->index_entries[i+1].timestamp : st->duration;
225b6d7f
AK
2769 uint8_t *title;
2770 uint16_t ch;
2771 int len, title_len;
7221579b 2772
6b4aa5da 2773 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
7221579b
DC
2774 av_log(s, AV_LOG_ERROR, "Chapter %d not found in file\n", i);
2775 goto finish;
2776 }
2777
7221579b 2778 // the first two bytes are the length of the title
b7effd4e 2779 len = avio_rb16(sc->pb);
7221579b
DC
2780 if (len > sample->size-2)
2781 continue;
225b6d7f
AK
2782 title_len = 2*len + 1;
2783 if (!(title = av_mallocz(title_len)))
2784 goto finish;
7221579b
DC
2785
2786 // The samples could theoretically be in any encoding if there's an encd
2787 // atom following, but in practice are only utf-8 or utf-16, distinguished
2788 // instead by the presence of a BOM
8fb22c3d
AC
2789 if (!len) {
2790 title[0] = 0;
2791 } else {
2792 ch = avio_rb16(sc->pb);
2793 if (ch == 0xfeff)
2794 avio_get_str16be(sc->pb, len, title, title_len);
2795 else if (ch == 0xfffe)
2796 avio_get_str16le(sc->pb, len, title, title_len);
2797 else {
2798 AV_WB16(title, ch);
2799 if (len == 1 || len == 2)
7ad06beb 2800 title[len] = 0;
8fb22c3d
AC
2801 else
2802 avio_get_str(sc->pb, len - 2, title + 2, title_len - 2);
2803 }
7221579b
DC
2804 }
2805
1fa395e4 2806 avpriv_new_chapter(s, i, st->time_base, sample->timestamp, end, title);
c4f8765a 2807 av_freep(&title);
7221579b
DC
2808 }
2809finish:
6b4aa5da 2810 avio_seek(sc->pb, cur_pos, SEEK_SET);
7221579b
DC
2811}
2812
c788782c
DC
2813static int mov_read_close(AVFormatContext *s)
2814{
2815 MOVContext *mov = s->priv_data;
2816 int i, j;
2817
2818 for (i = 0; i < s->nb_streams; i++) {
2819 AVStream *st = s->streams[i];
2820 MOVStreamContext *sc = st->priv_data;
2821
2822 av_freep(&sc->ctts_data);
2823 for (j = 0; j < sc->drefs_count; j++) {
2824 av_freep(&sc->drefs[j].path);
2825 av_freep(&sc->drefs[j].dir);
2826 }
2827 av_freep(&sc->drefs);
2828 if (sc->pb && sc->pb != s->pb)
2829 avio_close(sc->pb);
d51f0996
MS
2830
2831 av_freep(&sc->chunk_offsets);
2832 av_freep(&sc->stsc_data);
2833 av_freep(&sc->sample_sizes);
2834 av_freep(&sc->keyframes);
2835 av_freep(&sc->stts_data);
2836 av_freep(&sc->stps_data);
2837 av_freep(&sc->rap_group);
c788782c
DC
2838 }
2839
2840 if (mov->dv_demux) {
2841 for (i = 0; i < mov->dv_fctx->nb_streams; i++) {
2842 av_freep(&mov->dv_fctx->streams[i]->codec);
2843 av_freep(&mov->dv_fctx->streams[i]);
2844 }
2845 av_freep(&mov->dv_fctx);
2846 av_freep(&mov->dv_demux);
2847 }
2848
2849 av_freep(&mov->trex_data);
2850
2851 return 0;
2852}
2853
6e9651d1 2854static int mov_read_header(AVFormatContext *s)
6cea494e 2855{
e4141433 2856 MOVContext *mov = s->priv_data;
ae628ec1 2857 AVIOContext *pb = s->pb;
f9900374 2858 int err;
3491866a 2859 MOVAtom atom = { AV_RL32("root") };
fce28c3c 2860 int i;
6cea494e 2861
6cea494e 2862 mov->fc = s;
117a9190 2863 /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
5a7ba586 2864 if (pb->seekable)
76aa876e 2865 atom.size = avio_size(pb);
6cea494e 2866 else
fa22ca22 2867 atom.size = INT64_MAX;
6cea494e 2868
6cea494e 2869 /* check MOV header */
612b5cbb
BC
2870 if ((err = mov_read_default(mov, pb, atom)) < 0) {
2871 av_log(s, AV_LOG_ERROR, "error reading header: %d\n", err);
c788782c 2872 mov_read_close(s);
612b5cbb
BC
2873 return err;
2874 }
2875 if (!mov->found_moov) {
2876 av_log(s, AV_LOG_ERROR, "moov atom not found\n");
c788782c 2877 mov_read_close(s);
bcd5d979 2878 return AVERROR_INVALIDDATA;
6cea494e 2879 }
3583d7cf 2880 av_dlog(mov->fc, "on_parse_exit_offset=%"PRId64"\n", avio_tell(pb));
4e5ef14f 2881
8978feda 2882 if (pb->seekable && mov->chapter_track > 0)
7221579b
DC
2883 mov_read_chapters(s);
2884
fce28c3c
MN
2885 for (i = 0; i < s->nb_streams; i++) {
2886 AVStream *st = s->streams[i];
2887 MOVStreamContext *sc = st->priv_data;
2888
2889 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
2890 if (st->codec->width <= 0 && st->codec->width <= 0) {
2891 st->codec->width = sc->width;
2892 st->codec->height = sc->height;
2893 }
2894 }
2895 }
2896
bc7d0517 2897 if (mov->trex_data) {
bc7d0517
MS
2898 for (i = 0; i < s->nb_streams; i++) {
2899 AVStream *st = s->streams[i];
2900 MOVStreamContext *sc = st->priv_data;
7f8d41eb 2901 if (st->duration > 0)
bc7d0517
MS
2902 st->codec->bit_rate = sc->data_size * 8 * sc->time_scale / st->duration;
2903 }
2904 }
2905
6cea494e
ZK
2906 return 0;
2907}
2908
5dc5c43b 2909static AVIndexEntry *mov_find_next_sample(AVFormatContext *s, AVStream **st)
6cea494e 2910{
5dc5c43b 2911 AVIndexEntry *sample = NULL;
86d8602f 2912 int64_t best_dts = INT64_MAX;
5dc5c43b 2913 int i;
11f16b66 2914 for (i = 0; i < s->nb_streams; i++) {
69fc436c
RD
2915 AVStream *avst = s->streams[i];
2916 MOVStreamContext *msc = avst->priv_data;
3fe4d5d4 2917 if (msc->pb && msc->current_sample < avst->nb_index_entries) {
69fc436c 2918 AVIndexEntry *current_sample = &avst->index_entries[msc->current_sample];
bbe46bc4 2919 int64_t dts = av_rescale(current_sample->timestamp, AV_TIME_BASE, msc->time_scale);
dfd2a005 2920 av_dlog(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
8978feda
AK
2921 if (!sample || (!s->pb->seekable && current_sample->pos < sample->pos) ||
2922 (s->pb->seekable &&
221e21b7 2923 ((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb &&
687f35f3 2924 ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
221e21b7 2925 (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) {
b72708f8
BC
2926 sample = current_sample;
2927 best_dts = dts;
5dc5c43b 2928 *st = avst;
86d8602f 2929 }
6cea494e 2930 }
6cea494e 2931 }
5dc5c43b
RD
2932 return sample;
2933}
2934
2935static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
2936{
2937 MOVContext *mov = s->priv_data;
2938 MOVStreamContext *sc;
2939 AVIndexEntry *sample;
2940 AVStream *st = NULL;
2941 int ret;
2942 retry:
2943 sample = mov_find_next_sample(s, &st);
433aeb62
BC
2944 if (!sample) {
2945 mov->found_mdat = 0;
383a3b64
MS
2946 if (!mov->next_root_atom)
2947 return AVERROR_EOF;
2948 avio_seek(s->pb, mov->next_root_atom, SEEK_SET);
2949 mov->next_root_atom = 0;
2950 if (mov_read_default(mov, s->pb, (MOVAtom){ AV_RL32("root"), INT64_MAX }) < 0 ||
66e5b1df 2951 s->pb->eof_reached)
350f2c2c 2952 return AVERROR_EOF;
3583d7cf 2953 av_dlog(s, "read fragments, offset 0x%"PRIx64"\n", avio_tell(s->pb));
433aeb62
BC
2954 goto retry;
2955 }
69fc436c 2956 sc = st->priv_data;
b72708f8
BC
2957 /* must be done just before reading, to avoid infinite loop on sample */
2958 sc->current_sample++;
3fe4d5d4
RD
2959
2960 if (st->discard != AVDISCARD_ALL) {
6b4aa5da 2961 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
e1c1b0ff
RD
2962 av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
2963 sc->ffindex, sample->pos);
bcd5d979 2964 return AVERROR_INVALIDDATA;
e1c1b0ff
RD
2965 }
2966 ret = av_get_packet(sc->pb, pkt, sample->size);
a2f38511
RD
2967 if (ret < 0)
2968 return ret;
2d8591c2
KS
2969 if (sc->has_palette) {
2970 uint8_t *pal;
2971
2972 pal = av_packet_new_side_data(pkt, AV_PKT_DATA_PALETTE, AVPALETTE_SIZE);
2973 if (!pal) {
2974 av_log(mov->fc, AV_LOG_ERROR, "Cannot append palette to packet\n");
2975 } else {
2976 memcpy(pal, sc->palette, AVPALETTE_SIZE);
2977 sc->has_palette = 0;
2978 }
2979 }
e1c1b0ff
RD
2980#if CONFIG_DV_DEMUXER
2981 if (mov->dv_demux && sc->dv_audio_container) {
ab88b25f 2982 avpriv_dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size);
e1c1b0ff
RD
2983 av_free(pkt->data);
2984 pkt->size = 0;
ab88b25f 2985 ret = avpriv_dv_get_packet(mov->dv_demux, pkt);
e1c1b0ff
RD
2986 if (ret < 0)
2987 return ret;
2988 }
312954f0 2989#endif
3fe4d5d4
RD
2990 }
2991
b72708f8
BC
2992 pkt->stream_index = sc->ffindex;
2993 pkt->dts = sample->timestamp;
86f2ae06 2994 if (sc->ctts_data && sc->ctts_index < sc->ctts_count) {
bbe46bc4 2995 pkt->pts = pkt->dts + sc->dts_shift + sc->ctts_data[sc->ctts_index].duration;
b72708f8 2996 /* update ctts context */
a234e38d
BC
2997 sc->ctts_sample++;
2998 if (sc->ctts_index < sc->ctts_count &&
2999 sc->ctts_data[sc->ctts_index].count == sc->ctts_sample) {
3000 sc->ctts_index++;
3001 sc->ctts_sample = 0;
b565ea09 3002 }
0c5f76f7
BC
3003 if (sc->wrong_dts)
3004 pkt->dts = AV_NOPTS_VALUE;
b72708f8 3005 } else {
f0f2218d 3006 int64_t next_dts = (sc->current_sample < st->nb_index_entries) ?
e8430214
HG
3007 st->index_entries[sc->current_sample].timestamp : st->duration;
3008 pkt->duration = next_dts - pkt->dts;
b72708f8 3009 pkt->pts = pkt->dts;
b565ea09 3010 }
3fe4d5d4
RD
3011 if (st->discard == AVDISCARD_ALL)
3012 goto retry;
cc947f04 3013 pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? AV_PKT_FLAG_KEY : 0;
b72708f8 3014 pkt->pos = sample->pos;
dfd2a005 3015 av_dlog(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n",
29c90869 3016 pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
b72708f8
BC
3017 return 0;
3018}
3ffe3793 3019
e26df9eb 3020static int mov_seek_stream(AVFormatContext *s, AVStream *st, int64_t timestamp, int flags)
b72708f8
BC
3021{
3022 MOVStreamContext *sc = st->priv_data;
3023 int sample, time_sample;
3024 int i;
115329f1 3025
b72708f8 3026 sample = av_index_search_timestamp(st, timestamp, flags);
dfd2a005 3027 av_dlog(s, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
380966a8
JS
3028 if (sample < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
3029 sample = 0;
b72708f8 3030 if (sample < 0) /* not sure what to do */
bcd5d979 3031 return AVERROR_INVALIDDATA;
b72708f8 3032 sc->current_sample = sample;
dfd2a005 3033 av_dlog(s, "stream %d, found sample %d\n", st->index, sc->current_sample);
b72708f8
BC
3034 /* adjust ctts index */
3035 if (sc->ctts_data) {
3036 time_sample = 0;
3037 for (i = 0; i < sc->ctts_count; i++) {
54a5c719
BC
3038 int next = time_sample + sc->ctts_data[i].count;
3039 if (next > sc->current_sample) {
a234e38d
BC
3040 sc->ctts_index = i;
3041 sc->ctts_sample = sc->current_sample - time_sample;
b72708f8 3042 break;
115329f1 3043 }
54a5c719 3044 time_sample = next;
247d56f5 3045 }
247d56f5 3046 }
b72708f8 3047 return sample;
6cea494e
ZK
3048}
3049
961e0ccd 3050static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
baf25c9d 3051{
b72708f8
BC
3052 AVStream *st;
3053 int64_t seek_timestamp, timestamp;
3054 int sample;
3055 int i;
baf25c9d 3056
b72708f8 3057 if (stream_index >= s->nb_streams)
bcd5d979 3058 return AVERROR_INVALIDDATA;
8dc81a45
BC
3059 if (sample_time < 0)
3060 sample_time = 0;
baf25c9d 3061
b72708f8 3062 st = s->streams[stream_index];
e26df9eb 3063 sample = mov_seek_stream(s, st, sample_time, flags);
b72708f8 3064 if (sample < 0)
bcd5d979 3065 return sample;
baf25c9d 3066
b72708f8
BC
3067 /* adjust seek timestamp to found sample timestamp */
3068 seek_timestamp = st->index_entries[sample].timestamp;
baf25c9d 3069
b72708f8
BC
3070 for (i = 0; i < s->nb_streams; i++) {
3071 st = s->streams[i];
3fe4d5d4 3072 if (stream_index == i)
b72708f8 3073 continue;
baf25c9d 3074
b72708f8 3075 timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
e26df9eb 3076 mov_seek_stream(s, st, timestamp, flags);
115329f1 3077 }
baf25c9d
GC
3078 return 0;
3079}
baf25c9d 3080
c6610a21 3081AVInputFormat ff_mov_demuxer = {
dfc2c4d9 3082 .name = "mov,mp4,m4a,3gp,3g2,mj2",
0177b7d2 3083 .long_name = NULL_IF_CONFIG_SMALL("QuickTime / MOV"),
dfc2c4d9
AK
3084 .priv_data_size = sizeof(MOVContext),
3085 .read_probe = mov_probe,
3086 .read_header = mov_read_header,
3087 .read_packet = mov_read_packet,
3088 .read_close = mov_read_close,
3089 .read_seek = mov_read_seek,
6cea494e 3090};