truespeech: fix invalid reads in truespeech_apply_twopoint_filter()
[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 *
2912e87a 6 * This file is part of Libav.
b78e7197 7 *
2912e87a 8 * Libav is free software; you can redistribute it and/or
19720f15
FB
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
b78e7197 11 * version 2.1 of the License, or (at your option) any later version.
6cea494e 12 *
2912e87a 13 * Libav is distributed in the hope that it will be useful,
6cea494e 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19720f15
FB
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
6cea494e 17 *
19720f15 18 * You should have received a copy of the GNU Lesser General Public
2912e87a 19 * License along with Libav; if not, write to the Free Software
5509bffa 20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
6cea494e 21 */
d957696f
MN
22
23#include <limits.h>
115329f1 24
bfc2a19d 25//#define DEBUG
873358e5 26//#define MOV_EXPORT_ALL_METADATA
4e5ef14f 27
6a5d31ac 28#include "libavutil/intreadwrite.h"
3383a53e 29#include "libavutil/intfloat.h"
0ebcdf5c 30#include "libavutil/mathematics.h"
49674dd0 31#include "libavutil/avstring.h"
d2d67e42 32#include "libavutil/dict.h"
6cea494e 33#include "avformat.h"
c3f9ebf7 34#include "internal.h"
e731b8d8 35#include "avio_internal.h"
9d9f4119 36#include "riff.h"
e40ee6a2 37#include "isom.h"
9106a698 38#include "libavcodec/get_bits.h"
94395fbf 39#include "id3v1.h"
1fdf18f4 40#include "mov_chan.h"
6cea494e 41
b250f9c6 42#if CONFIG_ZLIB
0147f198
FR
43#include <zlib.h>
44#endif
45
6cea494e
ZK
46/*
47 * First version by Francois Revol revol@free.fr
115329f1 48 * Seek function by Gael Chardon gael.dev@4now.net
6cea494e
ZK
49 */
50
b595afaa
MM
51#include "qtpalette.h"
52
baf25c9d 53
cd7352d5
MN
54#undef NDEBUG
55#include <assert.h>
56
6cea494e 57/* those functions parse an atom */
6cea494e
ZK
58/* links atom IDs to parse functions */
59typedef struct MOVParseTableEntry {
0c1a9eda 60 uint32_t type;
ae628ec1 61 int (*parse)(MOVContext *ctx, AVIOContext *pb, MOVAtom atom);
6cea494e
ZK
62} MOVParseTableEntry;
63
73d07c27
BC
64static const MOVParseTableEntry mov_default_parse_table[];
65
dff41775
RH
66static int mov_metadata_track_or_disc_number(MOVContext *c, AVIOContext *pb,
67 unsigned len, const char *key)
c6026e43
BC
68{
69 char buf[16];
70
dff41775 71 short current, total;
b7effd4e 72 avio_rb16(pb); // unknown
dff41775
RH
73 current = avio_rb16(pb);
74 total = avio_rb16(pb);
75 if (!total)
76 snprintf(buf, sizeof(buf), "%d", current);
77 else
78 snprintf(buf, sizeof(buf), "%d/%d", current, total);
79 av_dict_set(&c->fc->metadata, key, buf, 0);
c6026e43
BC
80
81 return 0;
82}
83
80951f5c
RH
84static int mov_metadata_int8_bypass_padding(MOVContext *c, AVIOContext *pb,
85 unsigned len, const char *key)
f0556353 86{
80951f5c 87 char buf[16];
f0556353 88
80951f5c
RH
89 /* bypass padding bytes */
90 avio_r8(pb);
91 avio_r8(pb);
92 avio_r8(pb);
f0556353 93
028a2375 94 snprintf(buf, sizeof(buf), "%d", avio_r8(pb));
80951f5c 95 av_dict_set(&c->fc->metadata, key, buf, 0);
f0556353 96
80951f5c 97 return 0;
f0556353
RH
98}
99
5da35d1c
RH
100static int mov_metadata_int8_no_padding(MOVContext *c, AVIOContext *pb,
101 unsigned len, const char *key)
f0556353 102{
5da35d1c 103 char buf[16];
f0556353 104
028a2375 105 snprintf(buf, sizeof(buf), "%d", avio_r8(pb));
5da35d1c 106 av_dict_set(&c->fc->metadata, key, buf, 0);
f0556353 107
5da35d1c 108 return 0;
f0556353
RH
109}
110
94395fbf
RH
111static int mov_metadata_gnre(MOVContext *c, AVIOContext *pb,
112 unsigned len, const char *key)
113{
114 short genre;
115 char buf[20];
116
117 avio_r8(pb); // unknown
118
119 genre = avio_r8(pb);
120 if (genre < 1 || genre > ID3v1_GENRE_MAX)
121 return 0;
122 snprintf(buf, sizeof(buf), "%s", ff_id3v1_genre_str[genre-1]);
123 av_dict_set(&c->fc->metadata, key, buf, 0);
124
125 return 0;
126}
127
08a186c6
BC
128static const uint32_t mac_to_unicode[128] = {
129 0x00C4,0x00C5,0x00C7,0x00C9,0x00D1,0x00D6,0x00DC,0x00E1,
130 0x00E0,0x00E2,0x00E4,0x00E3,0x00E5,0x00E7,0x00E9,0x00E8,
131 0x00EA,0x00EB,0x00ED,0x00EC,0x00EE,0x00EF,0x00F1,0x00F3,
132 0x00F2,0x00F4,0x00F6,0x00F5,0x00FA,0x00F9,0x00FB,0x00FC,
133 0x2020,0x00B0,0x00A2,0x00A3,0x00A7,0x2022,0x00B6,0x00DF,
134 0x00AE,0x00A9,0x2122,0x00B4,0x00A8,0x2260,0x00C6,0x00D8,
135 0x221E,0x00B1,0x2264,0x2265,0x00A5,0x00B5,0x2202,0x2211,
136 0x220F,0x03C0,0x222B,0x00AA,0x00BA,0x03A9,0x00E6,0x00F8,
137 0x00BF,0x00A1,0x00AC,0x221A,0x0192,0x2248,0x2206,0x00AB,
138 0x00BB,0x2026,0x00A0,0x00C0,0x00C3,0x00D5,0x0152,0x0153,
139 0x2013,0x2014,0x201C,0x201D,0x2018,0x2019,0x00F7,0x25CA,
140 0x00FF,0x0178,0x2044,0x20AC,0x2039,0x203A,0xFB01,0xFB02,
141 0x2021,0x00B7,0x201A,0x201E,0x2030,0x00C2,0x00CA,0x00C1,
142 0x00CB,0x00C8,0x00CD,0x00CE,0x00CF,0x00CC,0x00D3,0x00D4,
143 0xF8FF,0x00D2,0x00DA,0x00DB,0x00D9,0x0131,0x02C6,0x02DC,
144 0x00AF,0x02D8,0x02D9,0x02DA,0x00B8,0x02DD,0x02DB,0x02C7,
145};
146
ae628ec1 147static int mov_read_mac_string(MOVContext *c, AVIOContext *pb, int len,
08a186c6
BC
148 char *dst, int dstlen)
149{
150 char *p = dst;
151 char *end = dst+dstlen-1;
152 int i;
153
154 for (i = 0; i < len; i++) {
b7effd4e 155 uint8_t t, c = avio_r8(pb);
08a186c6
BC
156 if (c < 0x80 && p < end)
157 *p++ = c;
158 else
159 PUT_UTF8(mac_to_unicode[c-0x80], t, if (p < end) *p++ = t;);
160 }
161 *p = 0;
162 return p - dst;
163}
164
ae628ec1 165static int mov_read_udta_string(MOVContext *c, AVIOContext *pb, MOVAtom atom)
0fb44a4e
BC
166{
167#ifdef MOV_EXPORT_ALL_METADATA
168 char tmp_key[5];
169#endif
170 char str[1024], key2[16], language[4] = {0};
171 const char *key = NULL;
08a186c6
BC
172 uint16_t str_size, langcode = 0;
173 uint32_t data_type = 0;
dff41775 174 int (*parse)(MOVContext*, AVIOContext*, unsigned, const char*) = NULL;
0fb44a4e
BC
175
176 switch (atom.type) {
177 case MKTAG(0xa9,'n','a','m'): key = "title"; break;
178 case MKTAG(0xa9,'a','u','t'):
ea4c4d7f 179 case MKTAG(0xa9,'A','R','T'): key = "artist"; break;
2804d320 180 case MKTAG( 'a','A','R','T'): key = "album_artist"; break;
55d2e32a 181 case MKTAG(0xa9,'w','r','t'): key = "composer"; break;
b9c78bca 182 case MKTAG( 'c','p','r','t'):
0fb44a4e
BC
183 case MKTAG(0xa9,'c','p','y'): key = "copyright"; break;
184 case MKTAG(0xa9,'c','m','t'):
185 case MKTAG(0xa9,'i','n','f'): key = "comment"; break;
186 case MKTAG(0xa9,'a','l','b'): key = "album"; break;
ca76a119 187 case MKTAG(0xa9,'d','a','y'): key = "date"; break;
0fb44a4e 188 case MKTAG(0xa9,'g','e','n'): key = "genre"; break;
94395fbf
RH
189 case MKTAG( 'g','n','r','e'): key = "genre";
190 parse = mov_metadata_gnre; break;
0fb44a4e 191 case MKTAG(0xa9,'t','o','o'):
2b91d83e 192 case MKTAG(0xa9,'s','w','r'): key = "encoder"; break;
a4cb56aa 193 case MKTAG(0xa9,'e','n','c'): key = "encoder"; break;
7382902b
DC
194 case MKTAG( 'd','e','s','c'): key = "description";break;
195 case MKTAG( 'l','d','e','s'): key = "synopsis"; break;
196 case MKTAG( 't','v','s','h'): key = "show"; break;
197 case MKTAG( 't','v','e','n'): key = "episode_id";break;
198 case MKTAG( 't','v','n','n'): key = "network"; break;
c6026e43 199 case MKTAG( 't','r','k','n'): key = "track";
dff41775
RH
200 parse = mov_metadata_track_or_disc_number; break;
201 case MKTAG( 'd','i','s','k'): key = "disc";
202 parse = mov_metadata_track_or_disc_number; break;
f0556353 203 case MKTAG( 't','v','e','s'): key = "episode_sort";
80951f5c 204 parse = mov_metadata_int8_bypass_padding; break;
f0556353 205 case MKTAG( 't','v','s','n'): key = "season_number";
80951f5c 206 parse = mov_metadata_int8_bypass_padding; break;
f0556353 207 case MKTAG( 's','t','i','k'): key = "media_type";
5da35d1c 208 parse = mov_metadata_int8_no_padding; break;
b06df707
RH
209 case MKTAG( 'h','d','v','d'): key = "hd_video";
210 parse = mov_metadata_int8_no_padding; break;
211 case MKTAG( 'p','g','a','p'): key = "gapless_playback";
212 parse = mov_metadata_int8_no_padding; break;
0fb44a4e
BC
213 }
214
215 if (c->itunes_metadata && atom.size > 8) {
b7effd4e
AK
216 int data_size = avio_rb32(pb);
217 int tag = avio_rl32(pb);
0fb44a4e 218 if (tag == MKTAG('d','a','t','a')) {
b7effd4e
AK
219 data_type = avio_rb32(pb); // type
220 avio_rb32(pb); // unknown
0fb44a4e
BC
221 str_size = data_size - 16;
222 atom.size -= 16;
223 } else return 0;
224 } else if (atom.size > 4 && key && !c->itunes_metadata) {
b7effd4e
AK
225 str_size = avio_rb16(pb); // string length
226 langcode = avio_rb16(pb);
08a186c6 227 ff_mov_lang_to_iso639(langcode, language);
0fb44a4e
BC
228 atom.size -= 4;
229 } else
230 str_size = atom.size;
231
232#ifdef MOV_EXPORT_ALL_METADATA
233 if (!key) {
234 snprintf(tmp_key, 5, "%.4s", (char*)&atom.type);
235 key = tmp_key;
236 }
237#endif
238
239 if (!key)
240 return 0;
241 if (atom.size < 0)
242 return -1;
243
244 str_size = FFMIN3(sizeof(str)-1, str_size, atom.size);
c6026e43
BC
245
246 if (parse)
dff41775 247 parse(c, pb, str_size, key);
c6026e43 248 else {
08a186c6
BC
249 if (data_type == 3 || (data_type == 0 && langcode < 0x800)) { // MAC Encoded
250 mov_read_mac_string(c, pb, str_size, str, sizeof(str));
251 } else {
b7effd4e 252 avio_read(pb, str, str_size);
08a186c6
BC
253 str[str_size] = 0;
254 }
d2d67e42 255 av_dict_set(&c->fc->metadata, key, str, 0);
f584386d
BC
256 if (*language && strcmp(language, "und")) {
257 snprintf(key2, sizeof(key2), "%s-%s", key, language);
d2d67e42 258 av_dict_set(&c->fc->metadata, key2, str, 0);
f584386d 259 }
c6026e43 260 }
02a8d43a
DB
261 av_dlog(c->fc, "lang \"%3s\" ", language);
262 av_dlog(c->fc, "tag \"%s\" value \"%s\" atom \"%.4s\" %d %"PRId64"\n",
263 key, str, (char*)&atom.type, str_size, atom.size);
0fb44a4e
BC
264
265 return 0;
266}
873358e5 267
ae628ec1 268static int mov_read_chpl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
1cf9f6ed
DC
269{
270 int64_t start;
105b3785 271 int i, nb_chapters, str_len, version;
1cf9f6ed
DC
272 char str[256+1];
273
274 if ((atom.size -= 5) < 0)
275 return 0;
276
b7effd4e
AK
277 version = avio_r8(pb);
278 avio_rb24(pb);
105b3785 279 if (version)
b7effd4e
AK
280 avio_rb32(pb); // ???
281 nb_chapters = avio_r8(pb);
1cf9f6ed
DC
282
283 for (i = 0; i < nb_chapters; i++) {
284 if (atom.size < 9)
285 return 0;
286
b7effd4e
AK
287 start = avio_rb64(pb);
288 str_len = avio_r8(pb);
1cf9f6ed
DC
289
290 if ((atom.size -= 9+str_len) < 0)
291 return 0;
292
b7effd4e 293 avio_read(pb, str, str_len);
1cf9f6ed 294 str[str_len] = 0;
1fa395e4 295 avpriv_new_chapter(c->fc, i, (AVRational){1,10000000}, start, AV_NOPTS_VALUE, str);
1cf9f6ed
DC
296 }
297 return 0;
298}
299
ae628ec1 300static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom)
6cea494e 301{
b6a17df4 302 int64_t total_size = 0;
c3e92a6c 303 MOVAtom a;
6cea494e 304 int i;
5ca1d879 305
9ed83b0a 306 if (atom.size < 0)
fa22ca22 307 atom.size = INT64_MAX;
66e5b1df 308 while (total_size + 8 < atom.size && !pb->eof_reached) {
ae628ec1 309 int (*parse)(MOVContext*, AVIOContext*, MOVAtom) = NULL;
bb270c08 310 a.size = atom.size;
bcfe2ba0 311 a.type=0;
5a7ba586 312 if (atom.size >= 8) {
b7effd4e
AK
313 a.size = avio_rb32(pb);
314 a.type = avio_rl32(pb);
6cea494e 315 }
dfd2a005 316 av_dlog(c->fc, "type: %08x '%.4s' parent:'%.4s' sz: %"PRId64" %"PRId64" %"PRId64"\n",
3491866a 317 a.type, (char*)&a.type, (char*)&atom.type, a.size, total_size, atom.size);
2209ffac 318 total_size += 8;
5ca1d879 319 if (a.size == 1) { /* 64 bit extended size */
b7effd4e 320 a.size = avio_rb64(pb) - 8;
5ca1d879 321 total_size += 8;
6cea494e 322 }
bb270c08
DB
323 if (a.size == 0) {
324 a.size = atom.size - total_size;
325 if (a.size <= 8)
5cd62665 326 break;
bb270c08 327 }
bb270c08 328 a.size -= 8;
5a7ba586 329 if (a.size < 0)
568e18b1 330 break;
3d2308b0 331 a.size = FFMIN(a.size, atom.size - total_size);
115329f1 332
873358e5
BC
333 for (i = 0; mov_default_parse_table[i].type; i++)
334 if (mov_default_parse_table[i].type == a.type) {
335 parse = mov_default_parse_table[i].parse;
336 break;
337 }
11979c46 338
873358e5
BC
339 // container is user data
340 if (!parse && (atom.type == MKTAG('u','d','t','a') ||
341 atom.type == MKTAG('i','l','s','t')))
342 parse = mov_read_udta_string;
343
344 if (!parse) { /* skip leaf atoms data */
45a8a02a 345 avio_skip(pb, a.size);
bb270c08 346 } else {
a2704c97 347 int64_t start_pos = avio_tell(pb);
5c72cad8 348 int64_t left;
a510991c
BC
349 int err = parse(c, pb, a);
350 if (err < 0)
351 return err;
49544546 352 if (c->found_moov && c->found_mdat &&
8978feda 353 (!pb->seekable || start_pos + a.size == avio_size(pb)))
49544546 354 return 0;
a2704c97 355 left = a.size - avio_tell(pb) + start_pos;
5c72cad8 356 if (left > 0) /* skip garbage at atom end */
45a8a02a 357 avio_skip(pb, left);
bb270c08 358 }
6cea494e 359
5ca1d879 360 total_size += a.size;
6cea494e
ZK
361 }
362
a510991c 363 if (total_size < atom.size && atom.size < 0x7ffff)
45a8a02a 364 avio_skip(pb, atom.size - total_size);
5cd62665 365
a510991c 366 return 0;
6cea494e
ZK
367}
368
ae628ec1 369static int mov_read_dref(MOVContext *c, AVIOContext *pb, MOVAtom atom)
221e21b7 370{
6a63ff19
BC
371 AVStream *st;
372 MOVStreamContext *sc;
221e21b7
BC
373 int entries, i, j;
374
6a63ff19
BC
375 if (c->fc->nb_streams < 1)
376 return 0;
377 st = c->fc->streams[c->fc->nb_streams-1];
378 sc = st->priv_data;
379
b7effd4e
AK
380 avio_rb32(pb); // version + flags
381 entries = avio_rb32(pb);
221e21b7
BC
382 if (entries >= UINT_MAX / sizeof(*sc->drefs))
383 return -1;
221e21b7 384 sc->drefs = av_mallocz(entries * sizeof(*sc->drefs));
0d8f0abf
BC
385 if (!sc->drefs)
386 return AVERROR(ENOMEM);
387 sc->drefs_count = entries;
221e21b7
BC
388
389 for (i = 0; i < sc->drefs_count; i++) {
c3e92a6c 390 MOVDref *dref = &sc->drefs[i];
b7effd4e 391 uint32_t size = avio_rb32(pb);
a2704c97 392 int64_t next = avio_tell(pb) + size - 4;
221e21b7 393
0e7d436d
BC
394 if (size < 12)
395 return -1;
396
b7effd4e
AK
397 dref->type = avio_rl32(pb);
398 avio_rb32(pb); // version + flags
dfd2a005 399 av_dlog(c->fc, "type %.4s size %d\n", (char*)&dref->type, size);
221e21b7
BC
400
401 if (dref->type == MKTAG('a','l','i','s') && size > 150) {
402 /* macintosh alias record */
403 uint16_t volume_len, len;
221e21b7
BC
404 int16_t type;
405
45a8a02a 406 avio_skip(pb, 10);
221e21b7 407
b7effd4e 408 volume_len = avio_r8(pb);
221e21b7 409 volume_len = FFMIN(volume_len, 27);
b7effd4e 410 avio_read(pb, dref->volume, 27);
adeb9071
BC
411 dref->volume[volume_len] = 0;
412 av_log(c->fc, AV_LOG_DEBUG, "volume %s, len %d\n", dref->volume, volume_len);
221e21b7 413
45a8a02a 414 avio_skip(pb, 12);
adeb9071 415
b7effd4e 416 len = avio_r8(pb);
adeb9071 417 len = FFMIN(len, 63);
b7effd4e 418 avio_read(pb, dref->filename, 63);
adeb9071
BC
419 dref->filename[len] = 0;
420 av_log(c->fc, AV_LOG_DEBUG, "filename %s, len %d\n", dref->filename, len);
421
45a8a02a 422 avio_skip(pb, 16);
adeb9071
BC
423
424 /* read next level up_from_alias/down_to_target */
b7effd4e
AK
425 dref->nlvl_from = avio_rb16(pb);
426 dref->nlvl_to = avio_rb16(pb);
adeb9071
BC
427 av_log(c->fc, AV_LOG_DEBUG, "nlvl from %d, nlvl to %d\n",
428 dref->nlvl_from, dref->nlvl_to);
429
45a8a02a 430 avio_skip(pb, 16);
221e21b7 431
a2704c97 432 for (type = 0; type != -1 && avio_tell(pb) < next; ) {
b7effd4e
AK
433 type = avio_rb16(pb);
434 len = avio_rb16(pb);
221e21b7
BC
435 av_log(c->fc, AV_LOG_DEBUG, "type %d, len %d\n", type, len);
436 if (len&1)
437 len += 1;
438 if (type == 2) { // absolute path
dbb37657 439 av_free(dref->path);
221e21b7 440 dref->path = av_mallocz(len+1);
2f4568e5
BC
441 if (!dref->path)
442 return AVERROR(ENOMEM);
b7effd4e 443 avio_read(pb, dref->path, len);
adeb9071 444 if (len > volume_len && !strncmp(dref->path, dref->volume, volume_len)) {
221e21b7
BC
445 len -= volume_len;
446 memmove(dref->path, dref->path+volume_len, len);
447 dref->path[len] = 0;
448 }
449 for (j = 0; j < len; j++)
450 if (dref->path[j] == ':')
451 dref->path[j] = '/';
452 av_log(c->fc, AV_LOG_DEBUG, "path %s\n", dref->path);
adeb9071
BC
453 } else if (type == 0) { // directory name
454 av_free(dref->dir);
455 dref->dir = av_malloc(len+1);
456 if (!dref->dir)
457 return AVERROR(ENOMEM);
b7effd4e 458 avio_read(pb, dref->dir, len);
adeb9071
BC
459 dref->dir[len] = 0;
460 for (j = 0; j < len; j++)
461 if (dref->dir[j] == ':')
462 dref->dir[j] = '/';
463 av_log(c->fc, AV_LOG_DEBUG, "dir %s\n", dref->dir);
221e21b7 464 } else
45a8a02a 465 avio_skip(pb, len);
221e21b7
BC
466 }
467 }
6b4aa5da 468 avio_seek(pb, next, SEEK_SET);
221e21b7
BC
469 }
470 return 0;
471}
472
ae628ec1 473static int mov_read_hdlr(MOVContext *c, AVIOContext *pb, MOVAtom atom)
6cea494e 474{
fefe43ff 475 AVStream *st;
0c1a9eda 476 uint32_t type;
5e1166b3 477 uint32_t av_unused ctype;
b6a17df4 478
fefe43ff
AC
479 if (c->fc->nb_streams < 1) // meta before first trak
480 return 0;
481
482 st = c->fc->streams[c->fc->nb_streams-1];
483
b7effd4e
AK
484 avio_r8(pb); /* version */
485 avio_rb24(pb); /* flags */
6cea494e
ZK
486
487 /* component type */
b7effd4e
AK
488 ctype = avio_rl32(pb);
489 type = avio_rl32(pb); /* component subtype */
6cea494e 490
dfd2a005
LB
491 av_dlog(c->fc, "ctype= %.4s (0x%08x)\n", (char*)&ctype, ctype);
492 av_dlog(c->fc, "stype= %.4s\n", (char*)&type);
2229a5c6 493
37ffe34b 494 if (type == MKTAG('v','i','d','e'))
72415b2a 495 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
5a7ba586 496 else if (type == MKTAG('s','o','u','n'))
72415b2a 497 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
5a7ba586 498 else if (type == MKTAG('m','1','a',' '))
95a07973 499 st->codec->codec_id = CODEC_ID_MP2;
5a7ba586 500 else if ((type == MKTAG('s','u','b','p')) || (type == MKTAG('c','l','c','p')))
72415b2a 501 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
f05783c2 502
b7effd4e
AK
503 avio_rb32(pb); /* component manufacture */
504 avio_rb32(pb); /* component flags */
505 avio_rb32(pb); /* component flags mask */
6cea494e 506
6cea494e
ZK
507 return 0;
508}
509
ae628ec1 510int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb, MOVAtom atom)
5cd62665 511{
6a63ff19 512 AVStream *st;
e65ab9d9 513 int tag;
b6a17df4 514
2d423666 515 if (fc->nb_streams < 1)
6a63ff19 516 return 0;
2d423666 517 st = fc->streams[fc->nb_streams-1];
6a63ff19 518
b7effd4e 519 avio_rb32(pb); /* version + flags */
e65ab9d9 520 ff_mp4_read_descr(fc, pb, &tag);
5cd62665 521 if (tag == MP4ESDescrTag) {
ad6c7c1b 522 ff_mp4_parse_es_descr(pb, NULL);
5cd62665 523 } else
b7effd4e 524 avio_rb16(pb); /* ID */
5cd62665 525
e65ab9d9 526 ff_mp4_read_descr(fc, pb, &tag);
798c6fac
BC
527 if (tag == MP4DecConfigDescrTag)
528 ff_mp4_read_dec_config_descr(fc, st, pb);
5cd62665
ZK
529 return 0;
530}
531
ae628ec1 532static int mov_read_esds(MOVContext *c, AVIOContext *pb, MOVAtom atom)
2d423666
PR
533{
534 return ff_mov_read_esds(c->fc, pb, atom);
535}
536
ae628ec1 537static int mov_read_dac3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
bdecdd2b
JR
538{
539 AVStream *st;
eb81cf86 540 int ac3info, acmod, lfeon, bsmod;
bdecdd2b 541
6d19fd5c
BC
542 if (c->fc->nb_streams < 1)
543 return 0;
bdecdd2b
JR
544 st = c->fc->streams[c->fc->nb_streams-1];
545
b7effd4e 546 ac3info = avio_rb24(pb);
eb81cf86 547 bsmod = (ac3info >> 14) & 0x7;
bdecdd2b
JR
548 acmod = (ac3info >> 11) & 0x7;
549 lfeon = (ac3info >> 10) & 0x1;
550 st->codec->channels = ((int[]){2,1,2,3,3,4,4,5})[acmod] + lfeon;
eb81cf86
JR
551 st->codec->audio_service_type = bsmod;
552 if (st->codec->channels > 1 && bsmod == 0x7)
553 st->codec->audio_service_type = AV_AUDIO_SERVICE_TYPE_KARAOKE;
bdecdd2b
JR
554
555 return 0;
556}
557
1fdf18f4
JR
558static int mov_read_chan(MOVContext *c, AVIOContext *pb, MOVAtom atom)
559{
560 AVStream *st;
561 uint8_t version;
562 uint32_t flags, layout_tag, bitmap, num_descr;
563
564 if (c->fc->nb_streams < 1)
565 return 0;
566 st = c->fc->streams[c->fc->nb_streams-1];
567
568 if (atom.size < 16)
569 return 0;
570
571 version = avio_r8(pb);
572 flags = avio_rb24(pb);
573
574 layout_tag = avio_rb32(pb);
575 bitmap = avio_rb32(pb);
576 num_descr = avio_rb32(pb);
577
578 if (atom.size < 16ULL + num_descr * 20ULL)
579 return 0;
580
581 av_dlog(c->fc, "chan: size=%ld version=%u flags=%u layout=%u bitmap=%u num_descr=%u\n",
582 atom.size, version, flags, layout_tag, bitmap, num_descr);
583
584#if 0
585 /* TODO: use the channel descriptions if the layout tag is 0 */
586 int i;
587 for (i = 0; i < num_descr; i++) {
588 uint32_t label, cflags;
589 float coords[3];
590 label = avio_rb32(pb); // mChannelLabel
591 cflags = avio_rb32(pb); // mChannelFlags
592 AV_WN32(&coords[0], avio_rl32(pb)); // mCoordinates[0]
593 AV_WN32(&coords[1], avio_rl32(pb)); // mCoordinates[1]
594 AV_WN32(&coords[2], avio_rl32(pb)); // mCoordinates[2]
595 }
596#endif
597
598 st->codec->channel_layout = ff_mov_get_channel_layout(layout_tag, bitmap);
599
600 return 0;
601}
602
85e9e3a9
AC
603static int mov_read_wfex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
604{
605 AVStream *st;
606
607 if (c->fc->nb_streams < 1)
608 return 0;
609 st = c->fc->streams[c->fc->nb_streams-1];
610
611 ff_get_wav_header(pb, st->codec, atom.size);
612
613 return 0;
614}
615
ae628ec1 616static int mov_read_pasp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
6da54074 617{
b7effd4e
AK
618 const int num = avio_rb32(pb);
619 const int den = avio_rb32(pb);
6a63ff19
BC
620 AVStream *st;
621
622 if (c->fc->nb_streams < 1)
623 return 0;
624 st = c->fc->streams[c->fc->nb_streams-1];
625
9044dd83
BC
626 if ((st->sample_aspect_ratio.den != 1 || st->sample_aspect_ratio.num) && // default
627 (den != st->sample_aspect_ratio.den || num != st->sample_aspect_ratio.num)) {
628 av_log(c->fc, AV_LOG_WARNING,
629 "sample aspect ratio already set to %d:%d, ignoring 'pasp' atom (%d:%d)\n",
630 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
631 num, den);
632 } else if (den != 0) {
6da54074
BC
633 st->sample_aspect_ratio.num = num;
634 st->sample_aspect_ratio.den = den;
635 }
636 return 0;
637}
638
5ca1d879 639/* this atom contains actual media data */
ae628ec1 640static int mov_read_mdat(MOVContext *c, AVIOContext *pb, MOVAtom atom)
6cea494e 641{
5a7ba586 642 if (atom.size == 0) /* wrong one (MP4) */
5ca1d879
ZK
643 return 0;
644 c->found_mdat=1;
5ca1d879
ZK
645 return 0; /* now go for moov */
646}
647
7b5252ce 648/* read major brand, minor version and compatible brands and store them as metadata */
ae628ec1 649static int mov_read_ftyp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
4ea28253 650{
7b5252ce 651 uint32_t minor_ver;
652 int comp_brand_size;
653 char minor_ver_str[11]; /* 32 bit integer -> 10 digits + null */
654 char* comp_brands_str;
655 uint8_t type[5] = {0};
656
b7effd4e 657 avio_read(pb, type, 4);
a42bf191 658 if (strcmp(type, "qt "))
152e9a43 659 c->isom = 1;
a512446e 660 av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
d2d67e42 661 av_dict_set(&c->fc->metadata, "major_brand", type, 0);
b7effd4e 662 minor_ver = avio_rb32(pb); /* minor version */
7b5252ce 663 snprintf(minor_ver_str, sizeof(minor_ver_str), "%d", minor_ver);
d2d67e42 664 av_dict_set(&c->fc->metadata, "minor_version", minor_ver_str, 0);
7b5252ce 665
666 comp_brand_size = atom.size - 8;
667 if (comp_brand_size < 0)
668 return -1;
669 comp_brands_str = av_malloc(comp_brand_size + 1); /* Add null terminator */
670 if (!comp_brands_str)
671 return AVERROR(ENOMEM);
b7effd4e 672 avio_read(pb, comp_brands_str, comp_brand_size);
7b5252ce 673 comp_brands_str[comp_brand_size] = 0;
d2d67e42 674 av_dict_set(&c->fc->metadata, "compatible_brands", comp_brands_str, 0);
7b5252ce 675 av_freep(&comp_brands_str);
676
4ea28253
BC
677 return 0;
678}
679
5ca1d879 680/* this atom should contain all header atoms */
ae628ec1 681static int mov_read_moov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
5ca1d879 682{
9cf0419b
PI
683 if (mov_read_default(c, pb, atom) < 0)
684 return -1;
5ca1d879
ZK
685 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
686 /* so we don't parse the whole file if over a network */
687 c->found_moov=1;
5ca1d879
ZK
688 return 0; /* now go for mdat */
689}
690
ae628ec1 691static int mov_read_moof(MOVContext *c, AVIOContext *pb, MOVAtom atom)
61aedb0f 692{
a2704c97 693 c->fragment.moof_offset = avio_tell(pb) - 8;
3583d7cf 694 av_dlog(c->fc, "moof offset %"PRIx64"\n", c->fragment.moof_offset);
61aedb0f
BC
695 return mov_read_default(c, pb, atom);
696}
5ca1d879 697
d2d67e42 698static void mov_metadata_creation_time(AVDictionary **metadata, time_t time)
7df22143
AJ
699{
700 char buffer[32];
701 if (time) {
5e2202d6 702 struct tm *ptm;
7df22143 703 time -= 2082844800; /* seconds between 1904-01-01 and Epoch */
5e2202d6
BC
704 ptm = gmtime(&time);
705 if (!ptm) return;
706 strftime(buffer, sizeof(buffer), "%Y-%m-%d %H:%M:%S", ptm);
d2d67e42 707 av_dict_set(metadata, "creation_time", buffer, 0);
7df22143
AJ
708 }
709}
710
ae628ec1 711static int mov_read_mdhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
5ca1d879 712{
6a63ff19
BC
713 AVStream *st;
714 MOVStreamContext *sc;
715 int version;
49674dd0 716 char language[4] = {0};
dce25564 717 unsigned lang;
7df22143 718 time_t creation_time;
5ca1d879 719
6a63ff19
BC
720 if (c->fc->nb_streams < 1)
721 return 0;
722 st = c->fc->streams[c->fc->nb_streams-1];
723 sc = st->priv_data;
724
b7effd4e 725 version = avio_r8(pb);
b9a87c4d 726 if (version > 1)
7e627332 727 return -1; /* unsupported */
5ca1d879 728
b7effd4e 729 avio_rb24(pb); /* flags */
f444b977 730 if (version == 1) {
b7effd4e
AK
731 creation_time = avio_rb64(pb);
732 avio_rb64(pb);
f444b977 733 } else {
b7effd4e
AK
734 creation_time = avio_rb32(pb);
735 avio_rb32(pb); /* modification time */
f444b977 736 }
7df22143 737 mov_metadata_creation_time(&st->metadata, creation_time);
5ca1d879 738
b7effd4e
AK
739 sc->time_scale = avio_rb32(pb);
740 st->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
5ca1d879 741
b7effd4e 742 lang = avio_rb16(pb); /* language */
49674dd0 743 if (ff_mov_lang_to_iso639(lang, language))
d2d67e42 744 av_dict_set(&st->metadata, "language", language, 0);
b7effd4e 745 avio_rb16(pb); /* quality */
5ca1d879
ZK
746
747 return 0;
748}
749
ae628ec1 750static int mov_read_mvhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
5ca1d879 751{
7df22143 752 time_t creation_time;
b7effd4e
AK
753 int version = avio_r8(pb); /* version */
754 avio_rb24(pb); /* flags */
5ca1d879 755
1175561e 756 if (version == 1) {
b7effd4e
AK
757 creation_time = avio_rb64(pb);
758 avio_rb64(pb);
1175561e 759 } else {
b7effd4e
AK
760 creation_time = avio_rb32(pb);
761 avio_rb32(pb); /* modification time */
1175561e 762 }
7df22143 763 mov_metadata_creation_time(&c->fc->metadata, creation_time);
b7effd4e 764 c->time_scale = avio_rb32(pb); /* time scale */
f8c18cd7 765
dfd2a005 766 av_dlog(c->fc, "time scale = %i\n", c->time_scale);
f8c18cd7 767
b7effd4e
AK
768 c->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
769 avio_rb32(pb); /* preferred scale */
5ca1d879 770
b7effd4e 771 avio_rb16(pb); /* preferred volume */
5ca1d879 772
45a8a02a 773 avio_skip(pb, 10); /* reserved */
5ca1d879 774
45a8a02a 775 avio_skip(pb, 36); /* display matrix */
5ca1d879 776
b7effd4e
AK
777 avio_rb32(pb); /* preview time */
778 avio_rb32(pb); /* preview duration */
779 avio_rb32(pb); /* poster time */
780 avio_rb32(pb); /* selection time */
781 avio_rb32(pb); /* selection duration */
782 avio_rb32(pb); /* current time */
783 avio_rb32(pb); /* next track ID */
5ca1d879
ZK
784
785 return 0;
786}
787
ae628ec1 788static int mov_read_smi(MOVContext *c, AVIOContext *pb, MOVAtom atom)
9ed83b0a 789{
6a63ff19
BC
790 AVStream *st;
791
792 if (c->fc->nb_streams < 1)
793 return 0;
794 st = c->fc->streams[c->fc->nb_streams-1];
9ed83b0a 795
5a7ba586 796 if ((uint64_t)atom.size > (1<<30))
568e18b1 797 return -1;
115329f1 798
9ed83b0a
ZK
799 // currently SVQ3 decoder expect full STSD header - so let's fake it
800 // this should be fixed and just SMI header should be passed
01f4895c 801 av_free(st->codec->extradata);
b014dd76
BC
802 st->codec->extradata = av_mallocz(atom.size + 0x5a + FF_INPUT_BUFFER_PADDING_SIZE);
803 if (!st->codec->extradata)
804 return AVERROR(ENOMEM);
17871a02
BC
805 st->codec->extradata_size = 0x5a + atom.size;
806 memcpy(st->codec->extradata, "SVQ3", 4); // fake
b7effd4e 807 avio_read(pb, st->codec->extradata + 0x5a, atom.size);
dfd2a005 808 av_dlog(c->fc, "Reading SMI %"PRId64" %s\n", atom.size, st->codec->extradata + 0x5a);
9ed83b0a
ZK
809 return 0;
810}
5ca1d879 811
ae628ec1 812static int mov_read_enda(MOVContext *c, AVIOContext *pb, MOVAtom atom)
de23f234 813{
6a63ff19
BC
814 AVStream *st;
815 int little_endian;
816
817 if (c->fc->nb_streams < 1)
818 return 0;
819 st = c->fc->streams[c->fc->nb_streams-1];
de23f234 820
b7effd4e 821 little_endian = avio_rb16(pb);
dfd2a005 822 av_dlog(c->fc, "enda %d\n", little_endian);
fa50a027 823 if (little_endian == 1) {
de23f234
BC
824 switch (st->codec->codec_id) {
825 case CODEC_ID_PCM_S24BE:
826 st->codec->codec_id = CODEC_ID_PCM_S24LE;
827 break;
828 case CODEC_ID_PCM_S32BE:
829 st->codec->codec_id = CODEC_ID_PCM_S32LE;
830 break;
a1ef2c4b
PR
831 case CODEC_ID_PCM_F32BE:
832 st->codec->codec_id = CODEC_ID_PCM_F32LE;
833 break;
834 case CODEC_ID_PCM_F64BE:
835 st->codec->codec_id = CODEC_ID_PCM_F64LE;
836 break;
de23f234
BC
837 default:
838 break;
839 }
840 }
841 return 0;
842}
843
014a5102 844/* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
ae628ec1 845static int mov_read_extradata(MOVContext *c, AVIOContext *pb, MOVAtom atom)
de23f234 846{
27134437
BC
847 AVStream *st;
848 uint64_t size;
68bc33fa 849 uint8_t *buf;
27134437
BC
850
851 if (c->fc->nb_streams < 1) // will happen with jp2 files
852 return 0;
853 st= c->fc->streams[c->fc->nb_streams-1];
854 size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
5a7ba586 855 if (size > INT_MAX || (uint64_t)atom.size > INT_MAX)
014a5102 856 return -1;
68bc33fa 857 buf= av_realloc(st->codec->extradata, size);
5a7ba586 858 if (!buf)
68bc33fa
BC
859 return -1;
860 st->codec->extradata= buf;
861 buf+= st->codec->extradata_size;
862 st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE;
863 AV_WB32( buf , atom.size + 8);
864 AV_WL32( buf + 4, atom.type);
b7effd4e 865 avio_read(pb, buf + 8, atom.size);
de23f234
BC
866 return 0;
867}
868
ae628ec1 869static int mov_read_wave(MOVContext *c, AVIOContext *pb, MOVAtom atom)
d9b1c197 870{
6a63ff19
BC
871 AVStream *st;
872
873 if (c->fc->nb_streams < 1)
874 return 0;
875 st = c->fc->streams[c->fc->nb_streams-1];
d9b1c197 876
5a7ba586 877 if ((uint64_t)atom.size > (1<<30))
d9b1c197 878 return -1;
115329f1 879
ed19fafd
SS
880 if (st->codec->codec_id == CODEC_ID_QDM2 || st->codec->codec_id == CODEC_ID_QDMC) {
881 // pass all frma atom to codec, needed at least for QDMC and QDM2
3840147e 882 av_free(st->codec->extradata);
b014dd76
BC
883 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
884 if (!st->codec->extradata)
885 return AVERROR(ENOMEM);
3840147e 886 st->codec->extradata_size = atom.size;
b7effd4e 887 avio_read(pb, st->codec->extradata, atom.size);
3840147e 888 } else if (atom.size > 8) { /* to read frma, esds atoms */
9cf0419b
PI
889 if (mov_read_default(c, pb, atom) < 0)
890 return -1;
5c72cad8 891 } else
45a8a02a 892 avio_skip(pb, atom.size);
d9b1c197
RT
893 return 0;
894}
895
bde24601
BC
896/**
897 * This function reads atom content and puts data in extradata without tag
898 * nor size unlike mov_read_extradata.
899 */
ae628ec1 900static int mov_read_glbl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
169eb021 901{
6a63ff19
BC
902 AVStream *st;
903
904 if (c->fc->nb_streams < 1)
905 return 0;
906 st = c->fc->streams[c->fc->nb_streams-1];
169eb021 907
5a7ba586 908 if ((uint64_t)atom.size > (1<<30))
568e18b1
MN
909 return -1;
910
01f4895c 911 av_free(st->codec->extradata);
b014dd76
BC
912 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
913 if (!st->codec->extradata)
914 return AVERROR(ENOMEM);
01f4895c 915 st->codec->extradata_size = atom.size;
b7effd4e 916 avio_read(pb, st->codec->extradata, atom.size);
169eb021
MM
917 return 0;
918}
919
653d7aeb
MS
920/**
921 * An strf atom is a BITMAPINFOHEADER struct. This struct is 40 bytes itself,
922 * but can have extradata appended at the end after the 40 bytes belonging
923 * to the struct.
924 */
ae628ec1 925static int mov_read_strf(MOVContext *c, AVIOContext *pb, MOVAtom atom)
653d7aeb
MS
926{
927 AVStream *st;
928
929 if (c->fc->nb_streams < 1)
930 return 0;
931 if (atom.size <= 40)
932 return 0;
933 st = c->fc->streams[c->fc->nb_streams-1];
934
5a7ba586 935 if ((uint64_t)atom.size > (1<<30))
653d7aeb
MS
936 return -1;
937
938 av_free(st->codec->extradata);
939 st->codec->extradata = av_mallocz(atom.size - 40 + FF_INPUT_BUFFER_PADDING_SIZE);
940 if (!st->codec->extradata)
941 return AVERROR(ENOMEM);
942 st->codec->extradata_size = atom.size - 40;
45a8a02a 943 avio_skip(pb, 40);
b7effd4e 944 avio_read(pb, st->codec->extradata, atom.size - 40);
653d7aeb
MS
945 return 0;
946}
947
ae628ec1 948static int mov_read_stco(MOVContext *c, AVIOContext *pb, MOVAtom atom)
5ca1d879 949{
6a63ff19
BC
950 AVStream *st;
951 MOVStreamContext *sc;
568e18b1 952 unsigned int i, entries;
5ca1d879 953
6a63ff19
BC
954 if (c->fc->nb_streams < 1)
955 return 0;
956 st = c->fc->streams[c->fc->nb_streams-1];
957 sc = st->priv_data;
958
b7effd4e
AK
959 avio_r8(pb); /* version */
960 avio_rb24(pb); /* flags */
5ca1d879 961
b7effd4e 962 entries = avio_rb32(pb);
115329f1 963
52401b82
AC
964 if (!entries)
965 return 0;
5a7ba586 966 if (entries >= UINT_MAX/sizeof(int64_t))
568e18b1 967 return -1;
115329f1 968
9a630c25 969 sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
5ca1d879 970 if (!sc->chunk_offsets)
0d8f0abf
BC
971 return AVERROR(ENOMEM);
972 sc->chunk_count = entries;
973
37ffe34b 974 if (atom.type == MKTAG('s','t','c','o'))
5a7ba586 975 for (i=0; i<entries; i++)
b7effd4e 976 sc->chunk_offsets[i] = avio_rb32(pb);
37ffe34b 977 else if (atom.type == MKTAG('c','o','6','4'))
5a7ba586 978 for (i=0; i<entries; i++)
b7effd4e 979 sc->chunk_offsets[i] = avio_rb64(pb);
37ffe34b 980 else
5ca1d879 981 return -1;
115329f1 982
5ca1d879
ZK
983 return 0;
984}
985
2288834f
BC
986/**
987 * Compute codec id for 'lpcm' tag.
988 * See CoreAudioTypes and AudioStreamBasicDescription at Apple.
989 */
2d423666 990enum CodecID ff_mov_get_lpcm_codec_id(int bps, int flags)
2288834f
BC
991{
992 if (flags & 1) { // floating point
993 if (flags & 2) { // big endian
994 if (bps == 32) return CODEC_ID_PCM_F32BE;
7e4b3fb8 995 else if (bps == 64) return CODEC_ID_PCM_F64BE;
2288834f 996 } else {
7e4b3fb8
BC
997 if (bps == 32) return CODEC_ID_PCM_F32LE;
998 else if (bps == 64) return CODEC_ID_PCM_F64LE;
2288834f
BC
999 }
1000 } else {
1001 if (flags & 2) {
1002 if (bps == 8)
1003 // signed integer
1004 if (flags & 4) return CODEC_ID_PCM_S8;
1005 else return CODEC_ID_PCM_U8;
1006 else if (bps == 16) return CODEC_ID_PCM_S16BE;
1007 else if (bps == 24) return CODEC_ID_PCM_S24BE;
1008 else if (bps == 32) return CODEC_ID_PCM_S32BE;
1009 } else {
1010 if (bps == 8)
1011 if (flags & 4) return CODEC_ID_PCM_S8;
1012 else return CODEC_ID_PCM_U8;
021b8ae3 1013 else if (bps == 16) return CODEC_ID_PCM_S16LE;
2288834f
BC
1014 else if (bps == 24) return CODEC_ID_PCM_S24LE;
1015 else if (bps == 32) return CODEC_ID_PCM_S32LE;
1016 }
1017 }
fb65d2ca 1018 return CODEC_ID_NONE;
2288834f
BC
1019}
1020
ae628ec1 1021int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries)
5ca1d879 1022{
6a63ff19
BC
1023 AVStream *st;
1024 MOVStreamContext *sc;
dc2cabd0 1025 int j, pseudo_stream_id;
b595afaa 1026
6a63ff19
BC
1027 if (c->fc->nb_streams < 1)
1028 return 0;
1029 st = c->fc->streams[c->fc->nb_streams-1];
1030 sc = st->priv_data;
1031
5a7ba586 1032 for (pseudo_stream_id=0; pseudo_stream_id<entries; pseudo_stream_id++) {
117a9190 1033 //Parsing Sample description table
b6a17df4 1034 enum CodecID id;
28155113 1035 int dref_id = 1;
3491866a 1036 MOVAtom a = { AV_RL32("stsd") };
a2704c97 1037 int64_t start_pos = avio_tell(pb);
b7effd4e
AK
1038 int size = avio_rb32(pb); /* size */
1039 uint32_t format = avio_rl32(pb); /* data format */
5cd62665 1040
28155113 1041 if (size >= 16) {
b7effd4e
AK
1042 avio_rb32(pb); /* reserved */
1043 avio_rb16(pb); /* reserved */
1044 dref_id = avio_rb16(pb);
28155113 1045 }
0e7eed09 1046
744a9c75 1047 if (st->codec->codec_tag &&
978677a7 1048 st->codec->codec_tag != format &&
1a40491e 1049 (c->fc->video_codec_id ? ff_codec_get_id(codec_movvideo_tags, format) != c->fc->video_codec_id
1c126b4f 1050 : st->codec->codec_tag != MKTAG('j','p','e','g'))
744a9c75 1051 ){
7ce68923
DB
1052 /* Multiple fourcc, we skip JPEG. This is not correct, we should
1053 * export it as a separate AVStream but this needs a few changes
1054 * in the MOV demuxer, patch welcome. */
adc73054 1055 multiple_stsd:
285a3da9 1056 av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n");
45a8a02a 1057 avio_skip(pb, size - (avio_tell(pb) - start_pos));
e7cc4b52
BC
1058 continue;
1059 }
adc73054
BC
1060 /* we cannot demux concatenated h264 streams because of different extradata */
1061 if (st->codec->codec_tag && st->codec->codec_tag == AV_RL32("avc1"))
1062 goto multiple_stsd;
978677a7 1063 sc->pseudo_stream_id = st->codec->codec_tag ? -1 : pseudo_stream_id;
221e21b7 1064 sc->dref_id= dref_id;
e7cc4b52 1065
bb270c08 1066 st->codec->codec_tag = format;
1a40491e 1067 id = ff_codec_get_id(codec_movaudio_tags, format);
86b61d42 1068 if (id<=0 && ((format&0xFFFF) == 'm'+('s'<<8) || (format&0xFFFF) == 'T'+('S'<<8)))
8fc0162a 1069 id = ff_codec_get_id(ff_codec_wav_tags, av_bswap32(format)&0xFFFF);
bca7db35 1070
72415b2a
SS
1071 if (st->codec->codec_type != AVMEDIA_TYPE_VIDEO && id > 0) {
1072 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
1073 } else if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO && /* do not overwrite codec type */
1c126b4f 1074 format && format != MKTAG('m','p','4','s')) { /* skip old asf mpeg4 tag */
1a40491e 1075 id = ff_codec_get_id(codec_movvideo_tags, format);
99487f42 1076 if (id <= 0)
1a40491e 1077 id = ff_codec_get_id(ff_codec_bmp_tags, format);
99487f42 1078 if (id > 0)
72415b2a 1079 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
5a7ba586 1080 else if (st->codec->codec_type == AVMEDIA_TYPE_DATA){
1a40491e 1081 id = ff_codec_get_id(ff_codec_movsubtitle_tags, format);
5a7ba586 1082 if (id > 0)
72415b2a 1083 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
1e3c9307 1084 }
99487f42
BC
1085 }
1086
dfd2a005 1087 av_dlog(c->fc, "size=%d 4CC= %c%c%c%c codec_type=%d\n", size,
29c90869
BC
1088 (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff,
1089 (format >> 24) & 0xff, st->codec->codec_type);
a20da52c 1090
5a7ba586 1091 if (st->codec->codec_type==AVMEDIA_TYPE_VIDEO) {
08a186c6 1092 unsigned int color_depth, len;
baf9fb32 1093 int color_greyscale;
baf9fb32 1094
01f4895c 1095 st->codec->codec_id = id;
b7effd4e
AK
1096 avio_rb16(pb); /* version */
1097 avio_rb16(pb); /* revision level */
1098 avio_rb32(pb); /* vendor */
1099 avio_rb32(pb); /* temporal quality */
1100 avio_rb32(pb); /* spatial quality */
3cb4ee51 1101
b7effd4e
AK
1102 st->codec->width = avio_rb16(pb); /* width */
1103 st->codec->height = avio_rb16(pb); /* height */
3cb4ee51 1104
b7effd4e
AK
1105 avio_rb32(pb); /* horiz resolution */
1106 avio_rb32(pb); /* vert resolution */
1107 avio_rb32(pb); /* data size, always 0 */
1108 avio_rb16(pb); /* frames per samples */
f8c18cd7 1109
b7effd4e 1110 len = avio_r8(pb); /* codec name, pascal string */
08a186c6
BC
1111 if (len > 31)
1112 len = 31;
1113 mov_read_mac_string(c, pb, len, st->codec->codec_name, 32);
1114 if (len < 31)
45a8a02a 1115 avio_skip(pb, 31 - len);
08a186c6
BC
1116 /* codec_tag YV12 triggers an UV swap in rawdec.c */
1117 if (!memcmp(st->codec->codec_name, "Planar Y'CbCr 8-bit 4:2:0", 25))
1118 st->codec->codec_tag=MKTAG('I', '4', '2', '0');
5cd62665 1119
b7effd4e
AK
1120 st->codec->bits_per_coded_sample = avio_rb16(pb); /* depth */
1121 st->codec->color_table_id = avio_rb16(pb); /* colortable id */
dfd2a005 1122 av_dlog(c->fc, "depth %d, ctab id %d\n",
dd1c8f3e 1123 st->codec->bits_per_coded_sample, st->codec->color_table_id);
b595afaa 1124 /* figure out the palette situation */
dd1c8f3e
LA
1125 color_depth = st->codec->bits_per_coded_sample & 0x1F;
1126 color_greyscale = st->codec->bits_per_coded_sample & 0x20;
b595afaa
MM
1127
1128 /* if the depth is 2, 4, or 8 bpp, file is palettized */
115329f1 1129 if ((color_depth == 2) || (color_depth == 4) ||
b595afaa 1130 (color_depth == 8)) {
47e1d7ef
BC
1131 /* for palette traversal */
1132 unsigned int color_start, color_count, color_end;
1133 unsigned char r, g, b;
1134
b595afaa 1135 if (color_greyscale) {
47e1d7ef 1136 int color_index, color_dec;
b595afaa 1137 /* compute the greyscale palette */
dd1c8f3e 1138 st->codec->bits_per_coded_sample = color_depth;
b595afaa
MM
1139 color_count = 1 << color_depth;
1140 color_index = 255;
1141 color_dec = 256 / (color_count - 1);
1142 for (j = 0; j < color_count; j++) {
1143 r = g = b = color_index;
2d8591c2 1144 sc->palette[j] =
b595afaa
MM
1145 (r << 16) | (g << 8) | (b);
1146 color_index -= color_dec;
1147 if (color_index < 0)
1148 color_index = 0;
1149 }
71f36235 1150 } else if (st->codec->color_table_id) {
47e1d7ef 1151 const uint8_t *color_table;
b595afaa
MM
1152 /* if flag bit 3 is set, use the default palette */
1153 color_count = 1 << color_depth;
1154 if (color_depth == 2)
a90466f7 1155 color_table = ff_qt_default_palette_4;
b595afaa 1156 else if (color_depth == 4)
a90466f7 1157 color_table = ff_qt_default_palette_16;
b595afaa 1158 else
a90466f7 1159 color_table = ff_qt_default_palette_256;
b595afaa
MM
1160
1161 for (j = 0; j < color_count; j++) {
2121b160
RB
1162 r = color_table[j * 3 + 0];
1163 g = color_table[j * 3 + 1];
1164 b = color_table[j * 3 + 2];
2d8591c2 1165 sc->palette[j] =
b595afaa
MM
1166 (r << 16) | (g << 8) | (b);
1167 }
b595afaa 1168 } else {
b595afaa 1169 /* load the palette from the file */
b7effd4e
AK
1170 color_start = avio_rb32(pb);
1171 color_count = avio_rb16(pb);
1172 color_end = avio_rb16(pb);
8b35bd80
MM
1173 if ((color_start <= 255) &&
1174 (color_end <= 255)) {
9de2919c
MM
1175 for (j = color_start; j <= color_end; j++) {
1176 /* each R, G, or B component is 16 bits;
1177 * only use the top 8 bits; skip alpha bytes
1178 * up front */
b7effd4e
AK
1179 avio_r8(pb);
1180 avio_r8(pb);
1181 r = avio_r8(pb);
1182 avio_r8(pb);
1183 g = avio_r8(pb);
1184 avio_r8(pb);
1185 b = avio_r8(pb);
1186 avio_r8(pb);
2d8591c2 1187 sc->palette[j] =
9de2919c 1188 (r << 16) | (g << 8) | (b);
8b35bd80 1189 }
b595afaa
MM
1190 }
1191 }
2d8591c2 1192 sc->has_palette = 1;
e49da827 1193 }
5a7ba586 1194 } else if (st->codec->codec_type==AVMEDIA_TYPE_AUDIO) {
aaef2bb3 1195 int bits_per_sample, flags;
b7effd4e 1196 uint16_t version = avio_rb16(pb);
b595afaa 1197
99487f42 1198 st->codec->codec_id = id;
b7effd4e
AK
1199 avio_rb16(pb); /* revision level */
1200 avio_rb32(pb); /* vendor */
6d6d7970 1201
b7effd4e 1202 st->codec->channels = avio_rb16(pb); /* channel count */
dfd2a005 1203 av_dlog(c->fc, "audio channels %d\n", st->codec->channels);
b7effd4e 1204 st->codec->bits_per_coded_sample = avio_rb16(pb); /* sample size */
de23f234 1205
b7effd4e
AK
1206 sc->audio_cid = avio_rb16(pb);
1207 avio_rb16(pb); /* packet size = 0 */
de23f234 1208
b7effd4e 1209 st->codec->sample_rate = ((avio_rb32(pb) >> 16));
de23f234 1210
5ef3ad59 1211 //Read QT version 1 fields. In version 0 these do not exist.
dfd2a005 1212 av_dlog(c->fc, "version =%d, isom =%d\n",version,c->isom);
5a7ba586
LB
1213 if (!c->isom) {
1214 if (version==1) {
b7effd4e
AK
1215 sc->samples_per_frame = avio_rb32(pb);
1216 avio_rb32(pb); /* bytes per packet */
1217 sc->bytes_per_frame = avio_rb32(pb);
1218 avio_rb32(pb); /* bytes per sample */
5a7ba586 1219 } else if (version==2) {
b7effd4e 1220 avio_rb32(pb); /* sizeof struct only */
3383a53e 1221 st->codec->sample_rate = av_int2double(avio_rb64(pb)); /* float 64 */
b7effd4e
AK
1222 st->codec->channels = avio_rb32(pb);
1223 avio_rb32(pb); /* always 0x7F000000 */
1224 st->codec->bits_per_coded_sample = avio_rb32(pb); /* bits per channel if sound is uncompressed */
1225 flags = avio_rb32(pb); /* lpcm format specific flag */
1226 sc->bytes_per_frame = avio_rb32(pb); /* bytes per audio packet if constant */
1227 sc->samples_per_frame = avio_rb32(pb); /* lpcm frames per audio packet if constant */
2288834f 1228 if (format == MKTAG('l','p','c','m'))
2d423666 1229 st->codec->codec_id = ff_mov_get_lpcm_codec_id(st->codec->bits_per_coded_sample, flags);
5ef3ad59
BC
1230 }
1231 }
1232
de23f234 1233 switch (st->codec->codec_id) {
b72708f8
BC
1234 case CODEC_ID_PCM_S8:
1235 case CODEC_ID_PCM_U8:
dd1c8f3e 1236 if (st->codec->bits_per_coded_sample == 16)
b72708f8
BC
1237 st->codec->codec_id = CODEC_ID_PCM_S16BE;
1238 break;
0dd39bfe 1239 case CODEC_ID_PCM_S16LE:
de23f234 1240 case CODEC_ID_PCM_S16BE:
dd1c8f3e 1241 if (st->codec->bits_per_coded_sample == 8)
de23f234 1242 st->codec->codec_id = CODEC_ID_PCM_S8;
dd1c8f3e 1243 else if (st->codec->bits_per_coded_sample == 24)
6b477e1b
BC
1244 st->codec->codec_id =
1245 st->codec->codec_id == CODEC_ID_PCM_S16BE ?
1246 CODEC_ID_PCM_S24BE : CODEC_ID_PCM_S24LE;
de23f234 1247 break;
53152765
BC
1248 /* set values for old format before stsd version 1 appeared */
1249 case CODEC_ID_MACE3:
1250 sc->samples_per_frame = 6;
1251 sc->bytes_per_frame = 2*st->codec->channels;
1252 break;
1253 case CODEC_ID_MACE6:
1254 sc->samples_per_frame = 6;
1255 sc->bytes_per_frame = 1*st->codec->channels;
1256 break;
1257 case CODEC_ID_ADPCM_IMA_QT:
1258 sc->samples_per_frame = 64;
1259 sc->bytes_per_frame = 34*st->codec->channels;
1260 break;
cc326d2b
BC
1261 case CODEC_ID_GSM:
1262 sc->samples_per_frame = 160;
1263 sc->bytes_per_frame = 33;
1264 break;
de23f234
BC
1265 default:
1266 break;
6d6d7970 1267 }
14342fd5 1268
9770089d
BC
1269 bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
1270 if (bits_per_sample) {
dd1c8f3e 1271 st->codec->bits_per_coded_sample = bits_per_sample;
9770089d
BC
1272 sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
1273 }
5a7ba586 1274 } else if (st->codec->codec_type==AVMEDIA_TYPE_SUBTITLE){
58e9f2ed
DC
1275 // ttxt stsd contains display flags, justification, background
1276 // color, fonts, and default styles, so fake an atom to read it
a2704c97 1277 MOVAtom fake_atom = { .size = size - (avio_tell(pb) - start_pos) };
fb9ac654 1278 if (format != AV_RL32("mp4s")) // mp4s contains a regular esds atom
3dd36041 1279 mov_read_glbl(c, pb, fake_atom);
cc8d87b7 1280 st->codec->codec_id= id;
6cdbff63
DC
1281 st->codec->width = sc->width;
1282 st->codec->height = sc->height;
de23f234
BC
1283 } else {
1284 /* other codec type, just skip (rtp, mp4s, tmcd ...) */
45a8a02a 1285 avio_skip(pb, size - (avio_tell(pb) - start_pos));
6cea494e 1286 }
de23f234 1287 /* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */
a2704c97 1288 a.size = size - (avio_tell(pb) - start_pos);
9cf0419b
PI
1289 if (a.size > 8) {
1290 if (mov_read_default(c, pb, a) < 0)
1291 return -1;
1292 } else if (a.size > 0)
45a8a02a 1293 avio_skip(pb, a.size);
6cea494e 1294 }
115329f1 1295
5a7ba586 1296 if (st->codec->codec_type==AVMEDIA_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1)
302c389e 1297 st->codec->sample_rate= sc->time_scale;
e31bd3e3 1298
d00f8e17 1299 /* special codec parameters handling */
e31bd3e3 1300 switch (st->codec->codec_id) {
b250f9c6 1301#if CONFIG_DV_DEMUXER
b60c0454 1302 case CODEC_ID_DVAUDIO:
8e2fd8e1 1303 c->dv_fctx = avformat_alloc_context();
ab88b25f 1304 c->dv_demux = avpriv_dv_init_demux(c->dv_fctx);
b60c0454
BC
1305 if (!c->dv_demux) {
1306 av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
1307 return -1;
1308 }
1309 sc->dv_audio_container = 1;
1310 st->codec->codec_id = CODEC_ID_PCM_S16LE;
1311 break;
989ac5a6 1312#endif
b95319a2 1313 /* no ifdef since parameters are always those */
3f78a3a9 1314 case CODEC_ID_QCELP:
17ad7b24
BC
1315 // force sample rate for qcelp when not stored in mov
1316 if (st->codec->codec_tag != MKTAG('Q','c','l','p'))
1317 st->codec->sample_rate = 8000;
73b458e3 1318 st->codec->frame_size= 160;
061f407e 1319 st->codec->channels= 1; /* really needed */
73b458e3 1320 break;
b95319a2 1321 case CODEC_ID_AMR_NB:
b95319a2 1322 st->codec->channels= 1; /* really needed */
f06188d5 1323 /* force sample rate for amr, stsd in 3gp does not store sample rate */
237f1329
CEH
1324 st->codec->sample_rate = 8000;
1325 /* force frame_size, too, samples_per_frame isn't always set properly */
1326 st->codec->frame_size = 160;
1327 break;
1328 case CODEC_ID_AMR_WB:
1329 st->codec->channels = 1;
1330 st->codec->sample_rate = 16000;
1331 st->codec->frame_size = 320;
b95319a2 1332 break;
a41104f8 1333 case CODEC_ID_MP2:
c59f24e6 1334 case CODEC_ID_MP3:
72415b2a 1335 st->codec->codec_type = AVMEDIA_TYPE_AUDIO; /* force type after stsd for m1a hdlr */
57004ff1 1336 st->need_parsing = AVSTREAM_PARSE_FULL;
a41104f8 1337 break;
5610f20e 1338 case CODEC_ID_GSM:
74e9b9ae
BC
1339 case CODEC_ID_ADPCM_MS:
1340 case CODEC_ID_ADPCM_IMA_WAV:
f2589642 1341 st->codec->frame_size = sc->samples_per_frame;
74e9b9ae
BC
1342 st->codec->block_align = sc->bytes_per_frame;
1343 break;
be511925 1344 case CODEC_ID_ALAC:
a1532824 1345 if (st->codec->extradata_size == 36) {
364df7b7
BC
1346 st->codec->frame_size = AV_RB32(st->codec->extradata+12);
1347 st->codec->channels = AV_RB8 (st->codec->extradata+21);
c6f1e29a 1348 st->codec->sample_rate = AV_RB32(st->codec->extradata+32);
a1532824 1349 }
be511925 1350 break;
e31bd3e3
BC
1351 default:
1352 break;
1353 }
5cd62665 1354
6cea494e
ZK
1355 return 0;
1356}
1357
ae628ec1 1358static int mov_read_stsd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
dc2cabd0
MS
1359{
1360 int entries;
1361
b7effd4e
AK
1362 avio_r8(pb); /* version */
1363 avio_rb24(pb); /* flags */
1364 entries = avio_rb32(pb);
dc2cabd0
MS
1365
1366 return ff_mov_read_stsd_entries(c, pb, entries);
1367}
1368
ae628ec1 1369static int mov_read_stsc(MOVContext *c, AVIOContext *pb, MOVAtom atom)
6cea494e 1370{
6a63ff19
BC
1371 AVStream *st;
1372 MOVStreamContext *sc;
568e18b1 1373 unsigned int i, entries;
b6a17df4 1374
6a63ff19
BC
1375 if (c->fc->nb_streams < 1)
1376 return 0;
1377 st = c->fc->streams[c->fc->nb_streams-1];
1378 sc = st->priv_data;
1379
b7effd4e
AK
1380 avio_r8(pb); /* version */
1381 avio_rb24(pb); /* flags */
6cea494e 1382
b7effd4e 1383 entries = avio_rb32(pb);
115329f1 1384
dfd2a005 1385 av_dlog(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
f8c18cd7 1386
52401b82
AC
1387 if (!entries)
1388 return 0;
5a7ba586 1389 if (entries >= UINT_MAX / sizeof(*sc->stsc_data))
0d8f0abf 1390 return -1;
04e06cfa
BC
1391 sc->stsc_data = av_malloc(entries * sizeof(*sc->stsc_data));
1392 if (!sc->stsc_data)
0d8f0abf
BC
1393 return AVERROR(ENOMEM);
1394 sc->stsc_count = entries;
1395
5a7ba586 1396 for (i=0; i<entries; i++) {
b7effd4e
AK
1397 sc->stsc_data[i].first = avio_rb32(pb);
1398 sc->stsc_data[i].count = avio_rb32(pb);
1399 sc->stsc_data[i].id = avio_rb32(pb);
6cea494e
ZK
1400 }
1401 return 0;
1402}
1403
ae628ec1 1404static int mov_read_stps(MOVContext *c, AVIOContext *pb, MOVAtom atom)
171a3531
BC
1405{
1406 AVStream *st;
1407 MOVStreamContext *sc;
1408 unsigned i, entries;
1409
1410 if (c->fc->nb_streams < 1)
1411 return 0;
1412 st = c->fc->streams[c->fc->nb_streams-1];
1413 sc = st->priv_data;
1414
b7effd4e 1415 avio_rb32(pb); // version + flags
171a3531 1416
b7effd4e 1417 entries = avio_rb32(pb);
171a3531
BC
1418 if (entries >= UINT_MAX / sizeof(*sc->stps_data))
1419 return -1;
1420 sc->stps_data = av_malloc(entries * sizeof(*sc->stps_data));
1421 if (!sc->stps_data)
1422 return AVERROR(ENOMEM);
1423 sc->stps_count = entries;
1424
1425 for (i = 0; i < entries; i++) {
b7effd4e 1426 sc->stps_data[i] = avio_rb32(pb);
dfd2a005 1427 //av_dlog(c->fc, "stps %d\n", sc->stps_data[i]);
171a3531
BC
1428 }
1429
1430 return 0;
1431}
1432
ae628ec1 1433static int mov_read_stss(MOVContext *c, AVIOContext *pb, MOVAtom atom)
247d56f5 1434{
6a63ff19
BC
1435 AVStream *st;
1436 MOVStreamContext *sc;
568e18b1 1437 unsigned int i, entries;
247d56f5 1438
6a63ff19
BC
1439 if (c->fc->nb_streams < 1)
1440 return 0;
1441 st = c->fc->streams[c->fc->nb_streams-1];
1442 sc = st->priv_data;
1443
b7effd4e
AK
1444 avio_r8(pb); /* version */
1445 avio_rb24(pb); /* flags */
247d56f5 1446
b7effd4e 1447 entries = avio_rb32(pb);
115329f1 1448
dfd2a005 1449 av_dlog(c->fc, "keyframe_count = %d\n", entries);
0d8f0abf 1450
5a7ba586 1451 if (entries >= UINT_MAX / sizeof(int))
568e18b1 1452 return -1;
1c02d96f 1453 sc->keyframes = av_malloc(entries * sizeof(int));
247d56f5 1454 if (!sc->keyframes)
0d8f0abf
BC
1455 return AVERROR(ENOMEM);
1456 sc->keyframe_count = entries;
1457
5a7ba586 1458 for (i=0; i<entries; i++) {
b7effd4e 1459 sc->keyframes[i] = avio_rb32(pb);
dfd2a005 1460 //av_dlog(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
247d56f5
BB
1461 }
1462 return 0;
1463}
1464
ae628ec1 1465static int mov_read_stsz(MOVContext *c, AVIOContext *pb, MOVAtom atom)
6cea494e 1466{
6a63ff19
BC
1467 AVStream *st;
1468 MOVStreamContext *sc;
bd27eed6
AC
1469 unsigned int i, entries, sample_size, field_size, num_bytes;
1470 GetBitContext gb;
1471 unsigned char* buf;
b6a17df4 1472
6a63ff19
BC
1473 if (c->fc->nb_streams < 1)
1474 return 0;
1475 st = c->fc->streams[c->fc->nb_streams-1];
1476 sc = st->priv_data;
1477
b7effd4e
AK
1478 avio_r8(pb); /* version */
1479 avio_rb24(pb); /* flags */
5cd62665 1480
bd27eed6 1481 if (atom.type == MKTAG('s','t','s','z')) {
b7effd4e 1482 sample_size = avio_rb32(pb);
d0dab0ec
AC
1483 if (!sc->sample_size) /* do not overwrite value computed in stsd */
1484 sc->sample_size = sample_size;
1485 field_size = 32;
bd27eed6
AC
1486 } else {
1487 sample_size = 0;
b7effd4e
AK
1488 avio_rb24(pb); /* reserved */
1489 field_size = avio_r8(pb);
bd27eed6 1490 }
b7effd4e 1491 entries = avio_rb32(pb);
0d8f0abf 1492
dfd2a005 1493 av_dlog(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, entries);
568e18b1 1494
6cea494e 1495 sc->sample_count = entries;
b72708f8
BC
1496 if (sample_size)
1497 return 0;
1498
bd27eed6
AC
1499 if (field_size != 4 && field_size != 8 && field_size != 16 && field_size != 32) {
1500 av_log(c->fc, AV_LOG_ERROR, "Invalid sample field size %d\n", field_size);
1501 return -1;
1502 }
1503
52401b82
AC
1504 if (!entries)
1505 return 0;
e4bc8af1 1506 if (entries >= UINT_MAX / sizeof(int) || entries >= (UINT_MAX - 4) / field_size)
0d8f0abf 1507 return -1;
1c02d96f 1508 sc->sample_sizes = av_malloc(entries * sizeof(int));
b6a17df4 1509 if (!sc->sample_sizes)
0d8f0abf
BC
1510 return AVERROR(ENOMEM);
1511
bd27eed6
AC
1512 num_bytes = (entries*field_size+4)>>3;
1513
08a5b4e9 1514 buf = av_malloc(num_bytes+FF_INPUT_BUFFER_PADDING_SIZE);
bd27eed6
AC
1515 if (!buf) {
1516 av_freep(&sc->sample_sizes);
1517 return AVERROR(ENOMEM);
1518 }
1519
b7effd4e 1520 if (avio_read(pb, buf, num_bytes) < num_bytes) {
bd27eed6
AC
1521 av_freep(&sc->sample_sizes);
1522 av_free(buf);
1523 return -1;
1524 }
1525
1526 init_get_bits(&gb, buf, 8*num_bytes);
1527
5a7ba586 1528 for (i=0; i<entries; i++)
bd27eed6
AC
1529 sc->sample_sizes[i] = get_bits_long(&gb, field_size);
1530
1531 av_free(buf);
6cea494e
ZK
1532 return 0;
1533}
1534
ae628ec1 1535static int mov_read_stts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
0147f198 1536{
6a63ff19
BC
1537 AVStream *st;
1538 MOVStreamContext *sc;
568e18b1 1539 unsigned int i, entries;
d957696f
MN
1540 int64_t duration=0;
1541 int64_t total_sample_count=0;
b6a17df4 1542
6a63ff19
BC
1543 if (c->fc->nb_streams < 1)
1544 return 0;
1545 st = c->fc->streams[c->fc->nb_streams-1];
1546 sc = st->priv_data;
1547
b7effd4e
AK
1548 avio_r8(pb); /* version */
1549 avio_rb24(pb); /* flags */
1550 entries = avio_rb32(pb);
0d8f0abf 1551
5a7ba586
LB
1552 av_dlog(c->fc, "track[%i].stts.entries = %i\n",
1553 c->fc->nb_streams-1, entries);
0d8f0abf 1554
6d23d197
AC
1555 if (!entries)
1556 return 0;
1557 if (entries >= UINT_MAX / sizeof(*sc->stts_data))
30c3d976 1558 return AVERROR(EINVAL);
5a7ba586 1559
c3e92a6c 1560 sc->stts_data = av_malloc(entries * sizeof(*sc->stts_data));
c1da59fa 1561 if (!sc->stts_data)
0d8f0abf 1562 return AVERROR(ENOMEM);
5a7ba586 1563
0d8f0abf 1564 sc->stts_count = entries;
cd7352d5 1565
5a7ba586 1566 for (i=0; i<entries; i++) {
cd461d48
MN
1567 int sample_duration;
1568 int sample_count;
0147f198 1569
b7effd4e
AK
1570 sample_count=avio_rb32(pb);
1571 sample_duration = avio_rb32(pb);
cd7352d5
MN
1572 sc->stts_data[i].count= sample_count;
1573 sc->stts_data[i].duration= sample_duration;
1574
5a7ba586
LB
1575 av_dlog(c->fc, "sample_count=%d, sample_duration=%d\n",
1576 sample_count, sample_duration);
4e5ef14f 1577
7e815047 1578 duration+=(int64_t)sample_duration*sample_count;
891f64b3 1579 total_sample_count+=sample_count;
891f64b3 1580 }
1581
961e0ccd 1582 st->nb_frames= total_sample_count;
5a7ba586 1583 if (duration)
961e0ccd 1584 st->duration= duration;
0147f198
FR
1585 return 0;
1586}
1587
ae628ec1 1588static int mov_read_ctts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
c4ac052b 1589{
6a63ff19
BC
1590 AVStream *st;
1591 MOVStreamContext *sc;
c4ac052b
MN
1592 unsigned int i, entries;
1593
6a63ff19
BC
1594 if (c->fc->nb_streams < 1)
1595 return 0;
1596 st = c->fc->streams[c->fc->nb_streams-1];
1597 sc = st->priv_data;
1598
b7effd4e
AK
1599 avio_r8(pb); /* version */
1600 avio_rb24(pb); /* flags */
1601 entries = avio_rb32(pb);
0d8f0abf 1602
dfd2a005 1603 av_dlog(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
0d8f0abf 1604
52401b82
AC
1605 if (!entries)
1606 return 0;
5a7ba586 1607 if (entries >= UINT_MAX / sizeof(*sc->ctts_data))
c4ac052b 1608 return -1;
c3e92a6c 1609 sc->ctts_data = av_malloc(entries * sizeof(*sc->ctts_data));
c1da59fa 1610 if (!sc->ctts_data)
0d8f0abf
BC
1611 return AVERROR(ENOMEM);
1612 sc->ctts_count = entries;
4e5ef14f 1613
5a7ba586 1614 for (i=0; i<entries; i++) {
b7effd4e
AK
1615 int count =avio_rb32(pb);
1616 int duration =avio_rb32(pb);
70a61ed4
MN
1617
1618 sc->ctts_data[i].count = count;
1619 sc->ctts_data[i].duration= duration;
e7452721
BC
1620 if (duration < 0)
1621 sc->dts_shift = FFMAX(sc->dts_shift, -duration);
c4ac052b 1622 }
e7452721 1623
dfd2a005 1624 av_dlog(c->fc, "dts shift %d\n", sc->dts_shift);
e7452721 1625
c4ac052b
MN
1626 return 0;
1627}
1628
1e77810d
BC
1629static void mov_build_index(MOVContext *mov, AVStream *st)
1630{
1631 MOVStreamContext *sc = st->priv_data;
bc5c918e 1632 int64_t current_offset;
1e77810d
BC
1633 int64_t current_dts = 0;
1634 unsigned int stts_index = 0;
1635 unsigned int stsc_index = 0;
1636 unsigned int stss_index = 0;
171a3531 1637 unsigned int stps_index = 0;
1e77810d 1638 unsigned int i, j;
c5898e86 1639 uint64_t stream_size = 0;
1e77810d 1640
baf2ffd3 1641 /* adjust first dts according to edit list */
c3024f9e 1642 if (sc->time_offset && mov->time_scale > 0) {
f33a6a22
YN
1643 if (sc->time_offset < 0)
1644 sc->time_offset = av_rescale(sc->time_offset, sc->time_scale, mov->time_scale);
1645 current_dts = -sc->time_offset;
69e7ad8d 1646 if (sc->ctts_data && sc->stts_data && sc->stts_data[0].duration &&
4af7166f 1647 sc->ctts_data[0].duration / sc->stts_data[0].duration > 16) {
f03a081d
BC
1648 /* more than 16 frames delay, dts are likely wrong
1649 this happens with files created by iMovie */
1650 sc->wrong_dts = 1;
1651 st->codec->has_b_frames = 1;
1652 }
baf2ffd3
BC
1653 }
1654
d3bc61ac 1655 /* only use old uncompressed audio chunk demuxing when stts specifies it */
72415b2a 1656 if (!(st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
d3bc61ac 1657 sc->stts_count == 1 && sc->stts_data[0].duration == 1)) {
1e77810d
BC
1658 unsigned int current_sample = 0;
1659 unsigned int stts_sample = 0;
171a3531 1660 unsigned int sample_size;
1e77810d
BC
1661 unsigned int distance = 0;
1662 int key_off = sc->keyframes && sc->keyframes[0] == 1;
1663
4b29ed39
BC
1664 current_dts -= sc->dts_shift;
1665
52401b82
AC
1666 if (!sc->sample_count)
1667 return;
987e857f
BC
1668 if (sc->sample_count >= UINT_MAX / sizeof(*st->index_entries))
1669 return;
1670 st->index_entries = av_malloc(sc->sample_count*sizeof(*st->index_entries));
1671 if (!st->index_entries)
1672 return;
1673 st->index_entries_allocated_size = sc->sample_count*sizeof(*st->index_entries);
1674
1e77810d
BC
1675 for (i = 0; i < sc->chunk_count; i++) {
1676 current_offset = sc->chunk_offsets[i];
9dd94f83 1677 while (stsc_index + 1 < sc->stsc_count &&
04e06cfa 1678 i + 1 == sc->stsc_data[stsc_index + 1].first)
1e77810d 1679 stsc_index++;
04e06cfa 1680 for (j = 0; j < sc->stsc_data[stsc_index].count; j++) {
171a3531 1681 int keyframe = 0;
1e77810d
BC
1682 if (current_sample >= sc->sample_count) {
1683 av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
f0f2218d 1684 return;
1e77810d 1685 }
171a3531
BC
1686
1687 if (!sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index]) {
1688 keyframe = 1;
1e77810d
BC
1689 if (stss_index + 1 < sc->keyframe_count)
1690 stss_index++;
171a3531
BC
1691 } else if (sc->stps_count && current_sample+key_off == sc->stps_data[stps_index]) {
1692 keyframe = 1;
1693 if (stps_index + 1 < sc->stps_count)
1694 stps_index++;
1e77810d 1695 }
171a3531
BC
1696 if (keyframe)
1697 distance = 0;
1e77810d 1698 sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
5a7ba586 1699 if (sc->pseudo_stream_id == -1 ||
04e06cfa 1700 sc->stsc_data[stsc_index].id - 1 == sc->pseudo_stream_id) {
987e857f
BC
1701 AVIndexEntry *e = &st->index_entries[st->nb_index_entries++];
1702 e->pos = current_offset;
1703 e->timestamp = current_dts;
1704 e->size = sample_size;
1705 e->min_distance = distance;
1706 e->flags = keyframe ? AVINDEX_KEYFRAME : 0;
dfd2a005 1707 av_dlog(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
585dac65
BC
1708 "size %d, distance %d, keyframe %d\n", st->index, current_sample,
1709 current_offset, current_dts, sample_size, distance, keyframe);
1710 }
6c00a9de 1711
1e77810d 1712 current_offset += sample_size;
c5898e86 1713 stream_size += sample_size;
bbe46bc4 1714 current_dts += sc->stts_data[stts_index].duration;
1e77810d
BC
1715 distance++;
1716 stts_sample++;
1717 current_sample++;
1718 if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
1719 stts_sample = 0;
1720 stts_index++;
1721 }
1722 }
1723 }
fedb1eca
BC
1724 if (st->duration > 0)
1725 st->codec->bit_rate = stream_size*8*sc->time_scale/st->duration;
7e69621f 1726 } else {
987e857f 1727 unsigned chunk_samples, total = 0;
7e69621f 1728
987e857f
BC
1729 // compute total chunk count
1730 for (i = 0; i < sc->stsc_count; i++) {
1731 unsigned count, chunk_count;
7e69621f 1732
987e857f 1733 chunk_samples = sc->stsc_data[i].count;
7e69621f
BC
1734 if (sc->samples_per_frame && chunk_samples % sc->samples_per_frame) {
1735 av_log(mov->fc, AV_LOG_ERROR, "error unaligned chunk\n");
1736 return;
1737 }
1738
987e857f
BC
1739 if (sc->samples_per_frame >= 160) { // gsm
1740 count = chunk_samples / sc->samples_per_frame;
1741 } else if (sc->samples_per_frame > 1) {
1742 unsigned samples = (1024/sc->samples_per_frame)*sc->samples_per_frame;
1743 count = (chunk_samples+samples-1) / samples;
1744 } else {
1745 count = (chunk_samples+1023) / 1024;
1746 }
1747
1748 if (i < sc->stsc_count - 1)
1749 chunk_count = sc->stsc_data[i+1].first - sc->stsc_data[i].first;
1750 else
1751 chunk_count = sc->chunk_count - (sc->stsc_data[i].first - 1);
1752 total += chunk_count * count;
1753 }
1754
dfd2a005 1755 av_dlog(mov->fc, "chunk count %d\n", total);
987e857f
BC
1756 if (total >= UINT_MAX / sizeof(*st->index_entries))
1757 return;
1758 st->index_entries = av_malloc(total*sizeof(*st->index_entries));
1759 if (!st->index_entries)
1760 return;
1761 st->index_entries_allocated_size = total*sizeof(*st->index_entries);
1762
1763 // populate index
1764 for (i = 0; i < sc->chunk_count; i++) {
1765 current_offset = sc->chunk_offsets[i];
1766 if (stsc_index + 1 < sc->stsc_count &&
1767 i + 1 == sc->stsc_data[stsc_index + 1].first)
1768 stsc_index++;
1769 chunk_samples = sc->stsc_data[stsc_index].count;
1770
7e69621f 1771 while (chunk_samples > 0) {
987e857f 1772 AVIndexEntry *e;
7e69621f
BC
1773 unsigned size, samples;
1774
1775 if (sc->samples_per_frame >= 160) { // gsm
1776 samples = sc->samples_per_frame;
1777 size = sc->bytes_per_frame;
1778 } else {
1779 if (sc->samples_per_frame > 1) {
1780 samples = FFMIN((1024 / sc->samples_per_frame)*
1781 sc->samples_per_frame, chunk_samples);
1782 size = (samples / sc->samples_per_frame) * sc->bytes_per_frame;
1e77810d 1783 } else {
7e69621f
BC
1784 samples = FFMIN(1024, chunk_samples);
1785 size = samples * sc->sample_size;
1e77810d
BC
1786 }
1787 }
7e69621f 1788
987e857f
BC
1789 if (st->nb_index_entries >= total) {
1790 av_log(mov->fc, AV_LOG_ERROR, "wrong chunk count %d\n", total);
1791 return;
1792 }
1793 e = &st->index_entries[st->nb_index_entries++];
1794 e->pos = current_offset;
1795 e->timestamp = current_dts;
1796 e->size = size;
1797 e->min_distance = 0;
1798 e->flags = AVINDEX_KEYFRAME;
dfd2a005 1799 av_dlog(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", "
117a9190 1800 "size %d, duration %d\n", st->index, i, current_offset, current_dts,
7e69621f
BC
1801 size, samples);
1802
1803 current_offset += size;
bbe46bc4 1804 current_dts += samples;
7e69621f 1805 chunk_samples -= samples;
1e77810d
BC
1806 }
1807 }
1808 }
1e77810d 1809}
bd991df2 1810
9d77a8fa
MS
1811static int mov_open_dref(AVIOContext **pb, char *src, MOVDref *ref,
1812 AVIOInterruptCB *int_cb)
adeb9071 1813{
6a245905
MN
1814 /* try relative path, we do not try the absolute because it can leak information about our
1815 system to an attacker */
adeb9071
BC
1816 if (ref->nlvl_to > 0 && ref->nlvl_from > 0) {
1817 char filename[1024];
1818 char *src_path;
1819 int i, l;
1820
1821 /* find a source dir */
1822 src_path = strrchr(src, '/');
1823 if (src_path)
1824 src_path++;
1825 else
1826 src_path = src;
1827
1828 /* find a next level down to target */
1829 for (i = 0, l = strlen(ref->path) - 1; l >= 0; l--)
1830 if (ref->path[l] == '/') {
1831 if (i == ref->nlvl_to - 1)
1832 break;
1833 else
1834 i++;
1835 }
1836
1837 /* compose filename if next level down to target was found */
bbdf0d22 1838 if (i == ref->nlvl_to - 1 && src_path - src < sizeof(filename)) {
adeb9071
BC
1839 memcpy(filename, src, src_path - src);
1840 filename[src_path - src] = 0;
1841
1842 for (i = 1; i < ref->nlvl_from; i++)
1843 av_strlcat(filename, "../", 1024);
1844
1845 av_strlcat(filename, ref->path + l + 1, 1024);
1846
9d77a8fa 1847 if (!avio_open2(pb, filename, AVIO_FLAG_READ, int_cb, NULL))
adeb9071
BC
1848 return 0;
1849 }
1850 }
1851
1852 return AVERROR(ENOENT);
628b16f4 1853}
adeb9071 1854
ae628ec1 1855static int mov_read_trak(MOVContext *c, AVIOContext *pb, MOVAtom atom)
5ca1d879
ZK
1856{
1857 AVStream *st;
1858 MOVStreamContext *sc;
bd991df2 1859 int ret;
5ca1d879 1860
84ad31ff 1861 st = avformat_new_stream(c->fc, NULL);
3efe8848 1862 if (!st) return AVERROR(ENOMEM);
84ad31ff 1863 st->id = c->fc->nb_streams;
9a630c25 1864 sc = av_mallocz(sizeof(MOVStreamContext));
2922cbdb 1865 if (!sc) return AVERROR(ENOMEM);
5ca1d879 1866
5ca1d879 1867 st->priv_data = sc;
72415b2a 1868 st->codec->codec_type = AVMEDIA_TYPE_DATA;
64d50fa5 1869 sc->ffindex = st->index;
5ca1d879 1870
bd991df2
BC
1871 if ((ret = mov_read_default(c, pb, atom)) < 0)
1872 return ret;
1873
1874 /* sanity checks */
6c00a9de
BC
1875 if (sc->chunk_count && (!sc->stts_count || !sc->stsc_count ||
1876 (!sc->sample_size && !sc->sample_count))) {
6282c5f4
BC
1877 av_log(c->fc, AV_LOG_ERROR, "stream %d, missing mandatory atoms, broken header\n",
1878 st->index);
bd991df2
BC
1879 return 0;
1880 }
6c00a9de 1881
c3024f9e 1882 if (sc->time_scale <= 0) {
507330b9 1883 av_log(c->fc, AV_LOG_WARNING, "stream %d, timescale not set\n", st->index);
6c00a9de 1884 sc->time_scale = c->time_scale;
c3024f9e 1885 if (sc->time_scale <= 0)
507330b9
BC
1886 sc->time_scale = 1;
1887 }
6c00a9de 1888
c3f9ebf7 1889 avpriv_set_pts_info(st, 64, 1, sc->time_scale);
bd991df2 1890
72415b2a 1891 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
5b4f5e5d
BC
1892 !st->codec->frame_size && sc->stts_count == 1) {
1893 st->codec->frame_size = av_rescale(sc->stts_data[0].duration,
1894 st->codec->sample_rate, sc->time_scale);
dfd2a005 1895 av_dlog(c->fc, "frame size %d\n", st->codec->frame_size);
5b4f5e5d 1896 }
bd991df2 1897
bd991df2
BC
1898 mov_build_index(c, st);
1899
1900 if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) {
adeb9071 1901 MOVDref *dref = &sc->drefs[sc->dref_id - 1];
9d77a8fa 1902 if (mov_open_dref(&sc->pb, c->fc->filename, dref, &c->fc->interrupt_callback) < 0)
adeb9071
BC
1903 av_log(c->fc, AV_LOG_ERROR,
1904 "stream %d, error opening alias: path='%s', dir='%s', "
1905 "filename='%s', volume='%s', nlvl_from=%d, nlvl_to=%d\n",
1906 st->index, dref->path, dref->dir, dref->filename,
1907 dref->volume, dref->nlvl_from, dref->nlvl_to);
bd991df2
BC
1908 } else
1909 sc->pb = c->fc->pb;
1910
72415b2a 1911 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
525fcb27
AW
1912 if (!st->sample_aspect_ratio.num &&
1913 (st->codec->width != sc->width || st->codec->height != sc->height)) {
1914 st->sample_aspect_ratio = av_d2q(((double)st->codec->height * sc->width) /
1915 ((double)st->codec->width * sc->height), INT_MAX);
c3aeaa54
BC
1916 }
1917
1918 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
1919 sc->time_scale*st->nb_frames, st->duration, INT_MAX);
f6253caf
BC
1920
1921 if (sc->stts_count == 1 || (sc->stts_count == 2 && sc->stts_data[1].count == 1))
1922 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den,
1923 sc->time_scale, sc->stts_data[0].duration, INT_MAX);
c9566115
BC
1924 }
1925
bd991df2 1926 switch (st->codec->codec_id) {
b250f9c6 1927#if CONFIG_H261_DECODER
bd991df2
BC
1928 case CODEC_ID_H261:
1929#endif
b250f9c6 1930#if CONFIG_H263_DECODER
bd991df2
BC
1931 case CODEC_ID_H263:
1932#endif
a0dd3c00
BC
1933#if CONFIG_H264_DECODER
1934 case CODEC_ID_H264:
1935#endif
b250f9c6 1936#if CONFIG_MPEG4_DECODER
bd991df2
BC
1937 case CODEC_ID_MPEG4:
1938#endif
6c00a9de 1939 st->codec->width = 0; /* let decoder init width/height */
bd991df2
BC
1940 st->codec->height= 0;
1941 break;
bd991df2 1942 }
f9900374
BC
1943
1944 /* Do not need those anymore. */
1945 av_freep(&sc->chunk_offsets);
04e06cfa 1946 av_freep(&sc->stsc_data);
f9900374
BC
1947 av_freep(&sc->sample_sizes);
1948 av_freep(&sc->keyframes);
1949 av_freep(&sc->stts_data);
171a3531 1950 av_freep(&sc->stps_data);
f9900374 1951
bd991df2 1952 return 0;
5ca1d879
ZK
1953}
1954
ae628ec1 1955static int mov_read_ilst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
51c15201
BC
1956{
1957 int ret;
1958 c->itunes_metadata = 1;
1959 ret = mov_read_default(c, pb, atom);
1960 c->itunes_metadata = 0;
1961 return ret;
1962}
1963
ae628ec1 1964static int mov_read_meta(MOVContext *c, AVIOContext *pb, MOVAtom atom)
51c15201 1965{
df8843c6 1966 while (atom.size > 8) {
b7effd4e 1967 uint32_t tag = avio_rl32(pb);
df8843c6
BC
1968 atom.size -= 4;
1969 if (tag == MKTAG('h','d','l','r')) {
6b4aa5da 1970 avio_seek(pb, -8, SEEK_CUR);
df8843c6
BC
1971 atom.size += 8;
1972 return mov_read_default(c, pb, atom);
1973 }
1974 }
1975 return 0;
51c15201
BC
1976}
1977
ae628ec1 1978static int mov_read_tkhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
5ca1d879 1979{
ec072669
JS
1980 int i;
1981 int width;
1982 int height;
1983 int64_t disp_transform[2];
1984 int display_matrix[3][2];
6a63ff19
BC
1985 AVStream *st;
1986 MOVStreamContext *sc;
1987 int version;
1988
1989 if (c->fc->nb_streams < 1)
1990 return 0;
1991 st = c->fc->streams[c->fc->nb_streams-1];
1992 sc = st->priv_data;
5ca1d879 1993
b7effd4e
AK
1994 version = avio_r8(pb);
1995 avio_rb24(pb); /* flags */
5ca1d879
ZK
1996 /*
1997 MOV_TRACK_ENABLED 0x0001
1998 MOV_TRACK_IN_MOVIE 0x0002
1999 MOV_TRACK_IN_PREVIEW 0x0004
2000 MOV_TRACK_IN_POSTER 0x0008
2001 */
2002
1175561e 2003 if (version == 1) {
b7effd4e
AK
2004 avio_rb64(pb);
2005 avio_rb64(pb);
1175561e 2006 } else {
b7effd4e
AK
2007 avio_rb32(pb); /* creation time */
2008 avio_rb32(pb); /* modification time */
1175561e 2009 }
b7effd4e
AK
2010 st->id = (int)avio_rb32(pb); /* track id (NOT 0 !)*/
2011 avio_rb32(pb); /* reserved */
fcdd622c 2012
117a9190 2013 /* highlevel (considering edits) duration in movie timebase */
b7effd4e
AK
2014 (version == 1) ? avio_rb64(pb) : avio_rb32(pb);
2015 avio_rb32(pb); /* reserved */
2016 avio_rb32(pb); /* reserved */
5ca1d879 2017
b7effd4e
AK
2018 avio_rb16(pb); /* layer */
2019 avio_rb16(pb); /* alternate group */
2020 avio_rb16(pb); /* volume */
2021 avio_rb16(pb); /* reserved */
5ca1d879 2022
ec072669
JS
2023 //read in the display matrix (outlined in ISO 14496-12, Section 6.2.2)
2024 // they're kept in fixed point format through all calculations
2025 // ignore u,v,z b/c we don't need the scale factor to calc aspect ratio
2026 for (i = 0; i < 3; i++) {
b7effd4e
AK
2027 display_matrix[i][0] = avio_rb32(pb); // 16.16 fixed point
2028 display_matrix[i][1] = avio_rb32(pb); // 16.16 fixed point
2029 avio_rb32(pb); // 2.30 fixed point (not used)
ec072669 2030 }
5ca1d879 2031
b7effd4e
AK
2032 width = avio_rb32(pb); // 16.16 fixed point track width
2033 height = avio_rb32(pb); // 16.16 fixed point track height
6cdbff63
DC
2034 sc->width = width >> 16;
2035 sc->height = height >> 16;
ec072669 2036
d862fce7 2037 // transform the display width/height according to the matrix
ec072669 2038 // skip this if the display matrix is the default identity matrix
d862fce7 2039 // or if it is rotating the picture, ex iPhone 3GS
ec072669
JS
2040 // to keep the same scale, use [width height 1<<16]
2041 if (width && height &&
d862fce7
BC
2042 ((display_matrix[0][0] != 65536 ||
2043 display_matrix[1][1] != 65536) &&
2044 !display_matrix[0][1] &&
2045 !display_matrix[1][0] &&
2046 !display_matrix[2][0] && !display_matrix[2][1])) {
ec072669
JS
2047 for (i = 0; i < 2; i++)
2048 disp_transform[i] =
2049 (int64_t) width * display_matrix[0][i] +
2050 (int64_t) height * display_matrix[1][i] +
2051 ((int64_t) display_matrix[2][i] << 16);
2052
2053 //sample aspect ratio is new width/height divided by old width/height
59729451 2054 st->sample_aspect_ratio = av_d2q(
ec072669
JS
2055 ((double) disp_transform[0] * height) /
2056 ((double) disp_transform[1] * width), INT_MAX);
2057 }
5ca1d879
ZK
2058 return 0;
2059}
2060
ae628ec1 2061static int mov_read_tfhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
61aedb0f
BC
2062{
2063 MOVFragment *frag = &c->fragment;
2064 MOVTrackExt *trex = NULL;
2065 int flags, track_id, i;
2066
b7effd4e
AK
2067 avio_r8(pb); /* version */
2068 flags = avio_rb24(pb);
61aedb0f 2069
b7effd4e 2070 track_id = avio_rb32(pb);
63581eb1 2071 if (!track_id)
61aedb0f
BC
2072 return -1;
2073 frag->track_id = track_id;
2074 for (i = 0; i < c->trex_count; i++)
2075 if (c->trex_data[i].track_id == frag->track_id) {
2076 trex = &c->trex_data[i];
2077 break;
2078 }
2079 if (!trex) {
2080 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding trex\n");
2081 return -1;
2082 }
2083
b7effd4e 2084 if (flags & 0x01) frag->base_data_offset = avio_rb64(pb);
61aedb0f 2085 else frag->base_data_offset = frag->moof_offset;
b7effd4e 2086 if (flags & 0x02) frag->stsd_id = avio_rb32(pb);
61aedb0f
BC
2087 else frag->stsd_id = trex->stsd_id;
2088
b7effd4e
AK
2089 frag->duration = flags & 0x08 ? avio_rb32(pb) : trex->duration;
2090 frag->size = flags & 0x10 ? avio_rb32(pb) : trex->size;
2091 frag->flags = flags & 0x20 ? avio_rb32(pb) : trex->flags;
dfd2a005 2092 av_dlog(c->fc, "frag flags 0x%x\n", frag->flags);
61aedb0f
BC
2093 return 0;
2094}
2095
ae628ec1 2096static int mov_read_chap(MOVContext *c, AVIOContext *pb, MOVAtom atom)
7221579b 2097{
b7effd4e 2098 c->chapter_track = avio_rb32(pb);
7221579b
DC
2099 return 0;
2100}
2101
ae628ec1 2102static int mov_read_trex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
61aedb0f
BC
2103{
2104 MOVTrackExt *trex;
2105
2106 if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data))
2107 return -1;
0d8f0abf
BC
2108 trex = av_realloc(c->trex_data, (c->trex_count+1)*sizeof(*c->trex_data));
2109 if (!trex)
61aedb0f 2110 return AVERROR(ENOMEM);
0d8f0abf 2111 c->trex_data = trex;
61aedb0f 2112 trex = &c->trex_data[c->trex_count++];
b7effd4e
AK
2113 avio_r8(pb); /* version */
2114 avio_rb24(pb); /* flags */
2115 trex->track_id = avio_rb32(pb);
2116 trex->stsd_id = avio_rb32(pb);
2117 trex->duration = avio_rb32(pb);
2118 trex->size = avio_rb32(pb);
2119 trex->flags = avio_rb32(pb);
61aedb0f
BC
2120 return 0;
2121}
2122
ae628ec1 2123static int mov_read_trun(MOVContext *c, AVIOContext *pb, MOVAtom atom)
61aedb0f
BC
2124{
2125 MOVFragment *frag = &c->fragment;
63581eb1 2126 AVStream *st = NULL;
44e43aab 2127 MOVStreamContext *sc;
45a811b5 2128 MOVStts *ctts_data;
61aedb0f
BC
2129 uint64_t offset;
2130 int64_t dts;
2131 int data_offset = 0;
2132 unsigned entries, first_sample_flags = frag->flags;
2133 int flags, distance, i;
2134
63581eb1
AC
2135 for (i = 0; i < c->fc->nb_streams; i++) {
2136 if (c->fc->streams[i]->id == frag->track_id) {
2137 st = c->fc->streams[i];
2138 break;
2139 }
2140 }
2141 if (!st) {
2142 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id);
44e43aab 2143 return -1;
63581eb1 2144 }
44e43aab 2145 sc = st->priv_data;
61aedb0f
BC
2146 if (sc->pseudo_stream_id+1 != frag->stsd_id)
2147 return 0;
b7effd4e
AK
2148 avio_r8(pb); /* version */
2149 flags = avio_rb24(pb);
2150 entries = avio_rb32(pb);
dfd2a005 2151 av_dlog(c->fc, "flags 0x%x entries %d\n", flags, entries);
45a811b5
YN
2152
2153 /* Always assume the presence of composition time offsets.
2154 * Without this assumption, for instance, we cannot deal with a track in fragmented movies that meet the following.
2155 * 1) in the initial movie, there are no samples.
2156 * 2) in the first movie fragment, there is only one sample without composition time offset.
2157 * 3) in the subsequent movie fragments, there are samples with composition time offset. */
2158 if (!sc->ctts_count && sc->sample_count)
2159 {
2160 /* Complement ctts table if moov atom doesn't have ctts atom. */
2161 ctts_data = av_malloc(sizeof(*sc->ctts_data));
0d8f0abf 2162 if (!ctts_data)
61aedb0f 2163 return AVERROR(ENOMEM);
0d8f0abf 2164 sc->ctts_data = ctts_data;
45a811b5
YN
2165 sc->ctts_data[sc->ctts_count].count = sc->sample_count;
2166 sc->ctts_data[sc->ctts_count].duration = 0;
2167 sc->ctts_count++;
61aedb0f 2168 }
45a811b5
YN
2169 if ((uint64_t)entries+sc->ctts_count >= UINT_MAX/sizeof(*sc->ctts_data))
2170 return -1;
2171 ctts_data = av_realloc(sc->ctts_data,
2172 (entries+sc->ctts_count)*sizeof(*sc->ctts_data));
2173 if (!ctts_data)
2174 return AVERROR(ENOMEM);
2175 sc->ctts_data = ctts_data;
2176
2177 if (flags & 0x001) data_offset = avio_rb32(pb);
2178 if (flags & 0x004) first_sample_flags = avio_rb32(pb);
f33a6a22 2179 dts = st->duration - sc->time_offset;
61aedb0f
BC
2180 offset = frag->base_data_offset + data_offset;
2181 distance = 0;
dfd2a005 2182 av_dlog(c->fc, "first sample flags 0x%x\n", first_sample_flags);
61aedb0f
BC
2183 for (i = 0; i < entries; i++) {
2184 unsigned sample_size = frag->size;
2185 int sample_flags = i ? frag->flags : first_sample_flags;
2186 unsigned sample_duration = frag->duration;
2187 int keyframe;
2188
b7effd4e
AK
2189 if (flags & 0x100) sample_duration = avio_rb32(pb);
2190 if (flags & 0x200) sample_size = avio_rb32(pb);
2191 if (flags & 0x400) sample_flags = avio_rb32(pb);
45a811b5
YN
2192 sc->ctts_data[sc->ctts_count].count = 1;
2193 sc->ctts_data[sc->ctts_count].duration = (flags & 0x800) ? avio_rb32(pb) : 0;
2194 sc->ctts_count++;
72415b2a 2195 if ((keyframe = st->codec->codec_type == AVMEDIA_TYPE_AUDIO ||
61aedb0f
BC
2196 (flags & 0x004 && !i && !sample_flags) || sample_flags & 0x2000000))
2197 distance = 0;
2198 av_add_index_entry(st, offset, dts, sample_size, distance,
2199 keyframe ? AVINDEX_KEYFRAME : 0);
dfd2a005 2200 av_dlog(c->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
61aedb0f
BC
2201 "size %d, distance %d, keyframe %d\n", st->index, sc->sample_count+i,
2202 offset, dts, sample_size, distance, keyframe);
2203 distance++;
bbe46bc4 2204 dts += sample_duration;
61aedb0f
BC
2205 offset += sample_size;
2206 }
2207 frag->moof_offset = offset;
f33a6a22 2208 st->duration = dts + sc->time_offset;
61aedb0f
BC
2209 return 0;
2210}
2211
5ca1d879
ZK
2212/* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
2213/* like the files created with Adobe Premiere 5.0, for samples see */
2214/* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
ae628ec1 2215static int mov_read_wide(MOVContext *c, AVIOContext *pb, MOVAtom atom)
5ca1d879
ZK
2216{
2217 int err;
5ca1d879 2218
5ca1d879
ZK
2219 if (atom.size < 8)
2220 return 0; /* continue */
b7effd4e 2221 if (avio_rb32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
45a8a02a 2222 avio_skip(pb, atom.size - 4);
5ca1d879
ZK
2223 return 0;
2224 }
b7effd4e 2225 atom.type = avio_rl32(pb);
5ca1d879 2226 atom.size -= 8;
1c126b4f 2227 if (atom.type != MKTAG('m','d','a','t')) {
45a8a02a 2228 avio_skip(pb, atom.size);
5ca1d879
ZK
2229 return 0;
2230 }
2231 err = mov_read_mdat(c, pb, atom);
5ca1d879
ZK
2232 return err;
2233}
2234
ae628ec1 2235static int mov_read_cmov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
0147f198 2236{
b250f9c6 2237#if CONFIG_ZLIB
ae628ec1 2238 AVIOContext ctx;
b6a17df4
ZK
2239 uint8_t *cmov_data;
2240 uint8_t *moov_data; /* uncompressed data */
0147f198 2241 long cmov_len, moov_len;
6f04eb1e 2242 int ret = -1;
b6a17df4 2243
b7effd4e
AK
2244 avio_rb32(pb); /* dcom atom */
2245 if (avio_rl32(pb) != MKTAG('d','c','o','m'))
0147f198 2246 return -1;
b7effd4e 2247 if (avio_rl32(pb) != MKTAG('z','l','i','b')) {
f3592353 2248 av_log(c->fc, AV_LOG_ERROR, "unknown compression for cmov atom !");
0147f198
FR
2249 return -1;
2250 }
b7effd4e
AK
2251 avio_rb32(pb); /* cmvd atom */
2252 if (avio_rl32(pb) != MKTAG('c','m','v','d'))
0147f198 2253 return -1;
b7effd4e 2254 moov_len = avio_rb32(pb); /* uncompressed size */
5ca1d879 2255 cmov_len = atom.size - 6 * 4;
5cd62665 2256
9a630c25 2257 cmov_data = av_malloc(cmov_len);
0147f198 2258 if (!cmov_data)
0d8f0abf 2259 return AVERROR(ENOMEM);
9a630c25 2260 moov_data = av_malloc(moov_len);
0147f198
FR
2261 if (!moov_data) {
2262 av_free(cmov_data);
0d8f0abf 2263 return AVERROR(ENOMEM);
0147f198 2264 }
b7effd4e 2265 avio_read(pb, cmov_data, cmov_len);
5a7ba586 2266 if (uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
6f04eb1e 2267 goto free_and_return;
5a7ba586 2268 if (ffio_init_context(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
6f04eb1e 2269 goto free_and_return;
1c126b4f 2270 atom.type = MKTAG('m','o','o','v');
5ca1d879
ZK
2271 atom.size = moov_len;
2272 ret = mov_read_default(c, &ctx, atom);
6f04eb1e 2273free_and_return:
0147f198
FR
2274 av_free(moov_data);
2275 av_free(cmov_data);
2276 return ret;
d966b2f0
BC
2277#else
2278 av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
2279 return -1;
0147f198 2280#endif
d966b2f0 2281}
0147f198 2282
baf25c9d 2283/* edit list atom */
ae628ec1 2284static int mov_read_elst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
baf25c9d 2285{
1c4bf2ec 2286 MOVStreamContext *sc;
5f0bb0ba 2287 int i, edit_count, version;
e0977c80 2288
1c4bf2ec
BC
2289 if (c->fc->nb_streams < 1)
2290 return 0;
2291 sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
2292
5f0bb0ba 2293 version = avio_r8(pb); /* version */
b7effd4e
AK
2294 avio_rb24(pb); /* flags */
2295 edit_count = avio_rb32(pb); /* entries */
e0977c80 2296
5a7ba586 2297 if ((uint64_t)edit_count*12+8 > atom.size)
53e099de
BC
2298 return -1;
2299
5a7ba586 2300 for (i=0; i<edit_count; i++){
5f0bb0ba
YN
2301 int64_t time;
2302 int64_t duration;
2303 if (version == 1) {
2304 duration = avio_rb64(pb);
2305 time = avio_rb64(pb);
2306 } else {
2307 duration = avio_rb32(pb); /* segment duration */
ae88e9cf 2308 time = (int32_t)avio_rb32(pb); /* media time */
5f0bb0ba 2309 }
b7effd4e 2310 avio_rb32(pb); /* Media rate */
2ac736a6
RD
2311 if (i == 0 && time >= -1) {
2312 sc->time_offset = time != -1 ? time : -duration;
a5929abe 2313 }
e0977c80 2314 }
baf2ffd3 2315
5a7ba586 2316 if (edit_count > 1)
baf2ffd3
BC
2317 av_log(c->fc, AV_LOG_WARNING, "multiple edit list entries, "
2318 "a/v desync might occur, patch welcome\n");
2319
dfd2a005 2320 av_dlog(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, edit_count);
e0977c80 2321 return 0;
baf25c9d
GC
2322}
2323
6cea494e 2324static const MOVParseTableEntry mov_default_parse_table[] = {
d4fdba0d 2325{ MKTAG('a','v','s','s'), mov_read_extradata },
1cf9f6ed 2326{ MKTAG('c','h','p','l'), mov_read_chpl },
1c126b4f
BC
2327{ MKTAG('c','o','6','4'), mov_read_stco },
2328{ MKTAG('c','t','t','s'), mov_read_ctts }, /* composition time to sample */
2329{ MKTAG('d','i','n','f'), mov_read_default },
2330{ MKTAG('d','r','e','f'), mov_read_dref },
2331{ MKTAG('e','d','t','s'), mov_read_default },
2332{ MKTAG('e','l','s','t'), mov_read_elst },
2333{ MKTAG('e','n','d','a'), mov_read_enda },
2334{ MKTAG('f','i','e','l'), mov_read_extradata },
2335{ MKTAG('f','t','y','p'), mov_read_ftyp },
2336{ MKTAG('g','l','b','l'), mov_read_glbl },
2337{ MKTAG('h','d','l','r'), mov_read_hdlr },
51c15201 2338{ MKTAG('i','l','s','t'), mov_read_ilst },
1c126b4f
BC
2339{ MKTAG('j','p','2','h'), mov_read_extradata },
2340{ MKTAG('m','d','a','t'), mov_read_mdat },
2341{ MKTAG('m','d','h','d'), mov_read_mdhd },
2342{ MKTAG('m','d','i','a'), mov_read_default },
51c15201 2343{ MKTAG('m','e','t','a'), mov_read_meta },
1c126b4f
BC
2344{ MKTAG('m','i','n','f'), mov_read_default },
2345{ MKTAG('m','o','o','f'), mov_read_moof },
2346{ MKTAG('m','o','o','v'), mov_read_moov },
2347{ MKTAG('m','v','e','x'), mov_read_default },
2348{ MKTAG('m','v','h','d'), mov_read_mvhd },
2349{ MKTAG('S','M','I',' '), mov_read_smi }, /* Sorenson extension ??? */
2350{ MKTAG('a','l','a','c'), mov_read_extradata }, /* alac specific atom */
2351{ MKTAG('a','v','c','C'), mov_read_glbl },
6da54074 2352{ MKTAG('p','a','s','p'), mov_read_pasp },
1c126b4f
BC
2353{ MKTAG('s','t','b','l'), mov_read_default },
2354{ MKTAG('s','t','c','o'), mov_read_stco },
171a3531 2355{ MKTAG('s','t','p','s'), mov_read_stps },
653d7aeb 2356{ MKTAG('s','t','r','f'), mov_read_strf },
1c126b4f
BC
2357{ MKTAG('s','t','s','c'), mov_read_stsc },
2358{ MKTAG('s','t','s','d'), mov_read_stsd }, /* sample description */
2359{ MKTAG('s','t','s','s'), mov_read_stss }, /* sync sample */
2360{ MKTAG('s','t','s','z'), mov_read_stsz }, /* sample size */
2361{ MKTAG('s','t','t','s'), mov_read_stts },
bd27eed6 2362{ MKTAG('s','t','z','2'), mov_read_stsz }, /* compact sample size */
1c126b4f
BC
2363{ MKTAG('t','k','h','d'), mov_read_tkhd }, /* track header */
2364{ MKTAG('t','f','h','d'), mov_read_tfhd }, /* track fragment header */
2365{ MKTAG('t','r','a','k'), mov_read_trak },
2366{ MKTAG('t','r','a','f'), mov_read_default },
7221579b
DC
2367{ MKTAG('t','r','e','f'), mov_read_default },
2368{ MKTAG('c','h','a','p'), mov_read_chap },
1c126b4f
BC
2369{ MKTAG('t','r','e','x'), mov_read_trex },
2370{ MKTAG('t','r','u','n'), mov_read_trun },
86b0affd 2371{ MKTAG('u','d','t','a'), mov_read_default },
1c126b4f
BC
2372{ MKTAG('w','a','v','e'), mov_read_wave },
2373{ MKTAG('e','s','d','s'), mov_read_esds },
bdecdd2b 2374{ MKTAG('d','a','c','3'), mov_read_dac3 }, /* AC-3 info */
1c126b4f 2375{ MKTAG('w','i','d','e'), mov_read_wide }, /* place holder */
85e9e3a9 2376{ MKTAG('w','f','e','x'), mov_read_wfex },
1c126b4f 2377{ MKTAG('c','m','o','v'), mov_read_cmov },
1fdf18f4 2378{ MKTAG('c','h','a','n'), mov_read_chan }, /* channel layout */
bcfe2ba0 2379{ 0, NULL }
6cea494e
ZK
2380};
2381
c9a65ca8
FB
2382static int mov_probe(AVProbeData *p)
2383{
0e7eed09
FB
2384 unsigned int offset;
2385 uint32_t tag;
2497479f 2386 int score = 0;
3ffe3793 2387
c9a65ca8 2388 /* check file header */
0e7eed09 2389 offset = 0;
5a7ba586 2390 for (;;) {
0e7eed09
FB
2391 /* ignore invalid offset */
2392 if ((offset + 8) > (unsigned int)p->buf_size)
2497479f 2393 return score;
fead30d4 2394 tag = AV_RL32(p->buf + offset + 4);
0e7eed09 2395 switch(tag) {
2497479f 2396 /* check for obvious tags */
1c126b4f
BC
2397 case MKTAG('j','P',' ',' '): /* jpeg 2000 signature */
2398 case MKTAG('m','o','o','v'):
2399 case MKTAG('m','d','a','t'):
2400 case MKTAG('p','n','o','t'): /* detect movs with preview pics like ew.mov and april.mov */
2401 case MKTAG('u','d','t','a'): /* Packet Video PVAuthor adds this and a lot of more junk */
40e7aaa3 2402 case MKTAG('f','t','y','p'):
3ffe3793 2403 return AVPROBE_SCORE_MAX;
2497479f 2404 /* those are more common words, so rate then a bit less */
1c126b4f
BC
2405 case MKTAG('e','d','i','w'): /* xdcam files have reverted first tags */
2406 case MKTAG('w','i','d','e'):
2407 case MKTAG('f','r','e','e'):
2408 case MKTAG('j','u','n','k'):
2409 case MKTAG('p','i','c','t'):
2497479f 2410 return AVPROBE_SCORE_MAX - 5;
5469b788 2411 case MKTAG(0x82,0x82,0x7f,0x7d):
1c126b4f
BC
2412 case MKTAG('s','k','i','p'):
2413 case MKTAG('u','u','i','d'):
2414 case MKTAG('p','r','f','l'):
fead30d4 2415 offset = AV_RB32(p->buf+offset) + offset;
2497479f
FR
2416 /* if we only find those cause probedata is too small at least rate them */
2417 score = AVPROBE_SCORE_MAX - 50;
0e7eed09
FB
2418 break;
2419 default:
2420 /* unrecognized tag */
2497479f 2421 return score;
0e7eed09 2422 }
3ffe3793 2423 }
c9a65ca8
FB
2424}
2425
7221579b
DC
2426// must be done after parsing all trak because there's no order requirement
2427static void mov_read_chapters(AVFormatContext *s)
2428{
2429 MOVContext *mov = s->priv_data;
2430 AVStream *st = NULL;
2431 MOVStreamContext *sc;
2432 int64_t cur_pos;
225b6d7f 2433 int i;
7221579b
DC
2434
2435 for (i = 0; i < s->nb_streams; i++)
2436 if (s->streams[i]->id == mov->chapter_track) {
2437 st = s->streams[i];
2438 break;
2439 }
2440 if (!st) {
2441 av_log(s, AV_LOG_ERROR, "Referenced QT chapter track not found\n");
2442 return;
2443 }
2444
2445 st->discard = AVDISCARD_ALL;
2446 sc = st->priv_data;
a2704c97 2447 cur_pos = avio_tell(sc->pb);
7221579b
DC
2448
2449 for (i = 0; i < st->nb_index_entries; i++) {
2450 AVIndexEntry *sample = &st->index_entries[i];
2451 int64_t end = i+1 < st->nb_index_entries ? st->index_entries[i+1].timestamp : st->duration;
225b6d7f
AK
2452 uint8_t *title;
2453 uint16_t ch;
2454 int len, title_len;
7221579b 2455
6b4aa5da 2456 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
7221579b
DC
2457 av_log(s, AV_LOG_ERROR, "Chapter %d not found in file\n", i);
2458 goto finish;
2459 }
2460
7221579b 2461 // the first two bytes are the length of the title
b7effd4e 2462 len = avio_rb16(sc->pb);
7221579b
DC
2463 if (len > sample->size-2)
2464 continue;
225b6d7f
AK
2465 title_len = 2*len + 1;
2466 if (!(title = av_mallocz(title_len)))
2467 goto finish;
7221579b
DC
2468
2469 // The samples could theoretically be in any encoding if there's an encd
2470 // atom following, but in practice are only utf-8 or utf-16, distinguished
2471 // instead by the presence of a BOM
8fb22c3d
AC
2472 if (!len) {
2473 title[0] = 0;
2474 } else {
2475 ch = avio_rb16(sc->pb);
2476 if (ch == 0xfeff)
2477 avio_get_str16be(sc->pb, len, title, title_len);
2478 else if (ch == 0xfffe)
2479 avio_get_str16le(sc->pb, len, title, title_len);
2480 else {
2481 AV_WB16(title, ch);
2482 if (len == 1 || len == 2)
7ad06beb 2483 title[len] = 0;
8fb22c3d
AC
2484 else
2485 avio_get_str(sc->pb, len - 2, title + 2, title_len - 2);
2486 }
7221579b
DC
2487 }
2488
1fa395e4 2489 avpriv_new_chapter(s, i, st->time_base, sample->timestamp, end, title);
c4f8765a 2490 av_freep(&title);
7221579b
DC
2491 }
2492finish:
6b4aa5da 2493 avio_seek(sc->pb, cur_pos, SEEK_SET);
7221579b
DC
2494}
2495
a266644f 2496static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
6cea494e 2497{
e4141433 2498 MOVContext *mov = s->priv_data;
ae628ec1 2499 AVIOContext *pb = s->pb;
f9900374 2500 int err;
3491866a 2501 MOVAtom atom = { AV_RL32("root") };
6cea494e 2502
6cea494e 2503 mov->fc = s;
117a9190 2504 /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
5a7ba586 2505 if (pb->seekable)
76aa876e 2506 atom.size = avio_size(pb);
6cea494e 2507 else
fa22ca22 2508 atom.size = INT64_MAX;
6cea494e 2509
6cea494e 2510 /* check MOV header */
612b5cbb
BC
2511 if ((err = mov_read_default(mov, pb, atom)) < 0) {
2512 av_log(s, AV_LOG_ERROR, "error reading header: %d\n", err);
2513 return err;
2514 }
2515 if (!mov->found_moov) {
2516 av_log(s, AV_LOG_ERROR, "moov atom not found\n");
bb270c08 2517 return -1;
6cea494e 2518 }
3583d7cf 2519 av_dlog(mov->fc, "on_parse_exit_offset=%"PRId64"\n", avio_tell(pb));
4e5ef14f 2520
8978feda 2521 if (pb->seekable && mov->chapter_track > 0)
7221579b
DC
2522 mov_read_chapters(s);
2523
6cea494e
ZK
2524 return 0;
2525}
2526
5dc5c43b 2527static AVIndexEntry *mov_find_next_sample(AVFormatContext *s, AVStream **st)
6cea494e 2528{
5dc5c43b 2529 AVIndexEntry *sample = NULL;
86d8602f 2530 int64_t best_dts = INT64_MAX;
5dc5c43b 2531 int i;
11f16b66 2532 for (i = 0; i < s->nb_streams; i++) {
69fc436c
RD
2533 AVStream *avst = s->streams[i];
2534 MOVStreamContext *msc = avst->priv_data;
3fe4d5d4 2535 if (msc->pb && msc->current_sample < avst->nb_index_entries) {
69fc436c 2536 AVIndexEntry *current_sample = &avst->index_entries[msc->current_sample];
bbe46bc4 2537 int64_t dts = av_rescale(current_sample->timestamp, AV_TIME_BASE, msc->time_scale);
dfd2a005 2538 av_dlog(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
8978feda
AK
2539 if (!sample || (!s->pb->seekable && current_sample->pos < sample->pos) ||
2540 (s->pb->seekable &&
221e21b7 2541 ((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb &&
687f35f3 2542 ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
221e21b7 2543 (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) {
b72708f8
BC
2544 sample = current_sample;
2545 best_dts = dts;
5dc5c43b 2546 *st = avst;
86d8602f 2547 }
6cea494e 2548 }
6cea494e 2549 }
5dc5c43b
RD
2550 return sample;
2551}
2552
2553static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
2554{
2555 MOVContext *mov = s->priv_data;
2556 MOVStreamContext *sc;
2557 AVIndexEntry *sample;
2558 AVStream *st = NULL;
2559 int ret;
2560 retry:
2561 sample = mov_find_next_sample(s, &st);
433aeb62
BC
2562 if (!sample) {
2563 mov->found_mdat = 0;
8978feda 2564 if (s->pb->seekable||
3491866a 2565 mov_read_default(mov, s->pb, (MOVAtom){ AV_RL32("root"), INT64_MAX }) < 0 ||
66e5b1df 2566 s->pb->eof_reached)
350f2c2c 2567 return AVERROR_EOF;
3583d7cf 2568 av_dlog(s, "read fragments, offset 0x%"PRIx64"\n", avio_tell(s->pb));
433aeb62
BC
2569 goto retry;
2570 }
69fc436c 2571 sc = st->priv_data;
b72708f8
BC
2572 /* must be done just before reading, to avoid infinite loop on sample */
2573 sc->current_sample++;
3fe4d5d4
RD
2574
2575 if (st->discard != AVDISCARD_ALL) {
6b4aa5da 2576 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
e1c1b0ff
RD
2577 av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
2578 sc->ffindex, sample->pos);
2579 return -1;
2580 }
2581 ret = av_get_packet(sc->pb, pkt, sample->size);
a2f38511
RD
2582 if (ret < 0)
2583 return ret;
2d8591c2
KS
2584 if (sc->has_palette) {
2585 uint8_t *pal;
2586
2587 pal = av_packet_new_side_data(pkt, AV_PKT_DATA_PALETTE, AVPALETTE_SIZE);
2588 if (!pal) {
2589 av_log(mov->fc, AV_LOG_ERROR, "Cannot append palette to packet\n");
2590 } else {
2591 memcpy(pal, sc->palette, AVPALETTE_SIZE);
2592 sc->has_palette = 0;
2593 }
2594 }
e1c1b0ff
RD
2595#if CONFIG_DV_DEMUXER
2596 if (mov->dv_demux && sc->dv_audio_container) {
ab88b25f 2597 avpriv_dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size);
e1c1b0ff
RD
2598 av_free(pkt->data);
2599 pkt->size = 0;
ab88b25f 2600 ret = avpriv_dv_get_packet(mov->dv_demux, pkt);
e1c1b0ff
RD
2601 if (ret < 0)
2602 return ret;
2603 }
312954f0 2604#endif
3fe4d5d4
RD
2605 }
2606
b72708f8
BC
2607 pkt->stream_index = sc->ffindex;
2608 pkt->dts = sample->timestamp;
2609 if (sc->ctts_data) {
bbe46bc4 2610 pkt->pts = pkt->dts + sc->dts_shift + sc->ctts_data[sc->ctts_index].duration;
b72708f8 2611 /* update ctts context */
a234e38d
BC
2612 sc->ctts_sample++;
2613 if (sc->ctts_index < sc->ctts_count &&
2614 sc->ctts_data[sc->ctts_index].count == sc->ctts_sample) {
2615 sc->ctts_index++;
2616 sc->ctts_sample = 0;
b565ea09 2617 }
0c5f76f7
BC
2618 if (sc->wrong_dts)
2619 pkt->dts = AV_NOPTS_VALUE;
b72708f8 2620 } else {
f0f2218d 2621 int64_t next_dts = (sc->current_sample < st->nb_index_entries) ?
e8430214
HG
2622 st->index_entries[sc->current_sample].timestamp : st->duration;
2623 pkt->duration = next_dts - pkt->dts;
b72708f8 2624 pkt->pts = pkt->dts;
b565ea09 2625 }
3fe4d5d4
RD
2626 if (st->discard == AVDISCARD_ALL)
2627 goto retry;
cc947f04 2628 pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? AV_PKT_FLAG_KEY : 0;
b72708f8 2629 pkt->pos = sample->pos;
dfd2a005 2630 av_dlog(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n",
29c90869 2631 pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
b72708f8
BC
2632 return 0;
2633}
3ffe3793 2634
e26df9eb 2635static int mov_seek_stream(AVFormatContext *s, AVStream *st, int64_t timestamp, int flags)
b72708f8
BC
2636{
2637 MOVStreamContext *sc = st->priv_data;
2638 int sample, time_sample;
2639 int i;
115329f1 2640
b72708f8 2641 sample = av_index_search_timestamp(st, timestamp, flags);
dfd2a005 2642 av_dlog(s, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
380966a8
JS
2643 if (sample < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
2644 sample = 0;
b72708f8
BC
2645 if (sample < 0) /* not sure what to do */
2646 return -1;
2647 sc->current_sample = sample;
dfd2a005 2648 av_dlog(s, "stream %d, found sample %d\n", st->index, sc->current_sample);
b72708f8
BC
2649 /* adjust ctts index */
2650 if (sc->ctts_data) {
2651 time_sample = 0;
2652 for (i = 0; i < sc->ctts_count; i++) {
54a5c719
BC
2653 int next = time_sample + sc->ctts_data[i].count;
2654 if (next > sc->current_sample) {
a234e38d
BC
2655 sc->ctts_index = i;
2656 sc->ctts_sample = sc->current_sample - time_sample;
b72708f8 2657 break;
115329f1 2658 }
54a5c719 2659 time_sample = next;
247d56f5 2660 }
247d56f5 2661 }
b72708f8 2662 return sample;
6cea494e
ZK
2663}
2664
961e0ccd 2665static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
baf25c9d 2666{
b72708f8
BC
2667 AVStream *st;
2668 int64_t seek_timestamp, timestamp;
2669 int sample;
2670 int i;
baf25c9d 2671
b72708f8 2672 if (stream_index >= s->nb_streams)
baf25c9d 2673 return -1;
8dc81a45
BC
2674 if (sample_time < 0)
2675 sample_time = 0;
baf25c9d 2676
b72708f8 2677 st = s->streams[stream_index];
e26df9eb 2678 sample = mov_seek_stream(s, st, sample_time, flags);
b72708f8 2679 if (sample < 0)
baf25c9d 2680 return -1;
baf25c9d 2681
b72708f8
BC
2682 /* adjust seek timestamp to found sample timestamp */
2683 seek_timestamp = st->index_entries[sample].timestamp;
baf25c9d 2684
b72708f8
BC
2685 for (i = 0; i < s->nb_streams; i++) {
2686 st = s->streams[i];
3fe4d5d4 2687 if (stream_index == i)
b72708f8 2688 continue;
baf25c9d 2689
b72708f8 2690 timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
e26df9eb 2691 mov_seek_stream(s, st, timestamp, flags);
115329f1 2692 }
baf25c9d
GC
2693 return 0;
2694}
baf25c9d 2695
a266644f 2696static int mov_read_close(AVFormatContext *s)
6cea494e 2697{
e4141433 2698 MOVContext *mov = s->priv_data;
6c00a9de
BC
2699 int i, j;
2700
2701 for (i = 0; i < s->nb_streams; i++) {
e49da827
BC
2702 AVStream *st = s->streams[i];
2703 MOVStreamContext *sc = st->priv_data;
6c00a9de 2704
7c622eed 2705 av_freep(&sc->ctts_data);
adeb9071 2706 for (j = 0; j < sc->drefs_count; j++) {
221e21b7 2707 av_freep(&sc->drefs[j].path);
adeb9071
BC
2708 av_freep(&sc->drefs[j].dir);
2709 }
221e21b7
BC
2710 av_freep(&sc->drefs);
2711 if (sc->pb && sc->pb != s->pb)
22a3212e 2712 avio_close(sc->pb);
4440b118 2713 }
6c00a9de
BC
2714
2715 if (mov->dv_demux) {
5a7ba586 2716 for (i = 0; i < mov->dv_fctx->nb_streams; i++) {
b60c0454
BC
2717 av_freep(&mov->dv_fctx->streams[i]->codec);
2718 av_freep(&mov->dv_fctx->streams[i]);
2719 }
2720 av_freep(&mov->dv_fctx);
2721 av_freep(&mov->dv_demux);
2722 }
6c00a9de 2723
61aedb0f 2724 av_freep(&mov->trex_data);
6c00a9de 2725
6cea494e
ZK
2726 return 0;
2727}
2728
c6610a21 2729AVInputFormat ff_mov_demuxer = {
dfc2c4d9
AK
2730 .name = "mov,mp4,m4a,3gp,3g2,mj2",
2731 .long_name = NULL_IF_CONFIG_SMALL("QuickTime/MPEG-4/Motion JPEG 2000 format"),
2732 .priv_data_size = sizeof(MOVContext),
2733 .read_probe = mov_probe,
2734 .read_header = mov_read_header,
2735 .read_packet = mov_read_packet,
2736 .read_close = mov_read_close,
2737 .read_seek = mov_read_seek,
6cea494e 2738};