movenc: Write the sample rate instead of time scale in the stsd atom
[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)
bcd5d979 242 return AVERROR_INVALIDDATA;
0fb44a4e
BC
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 382 if (entries >= UINT_MAX / sizeof(*sc->drefs))
bcd5d979 383 return AVERROR_INVALIDDATA;
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 394 if (size < 12)
bcd5d979 395 return AVERROR_INVALIDDATA;
0e7d436d 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;
4274e481
AC
562 uint32_t flags, layout_tag, bitmap, num_descr, label_mask;
563 int i;
1fdf18f4
JR
564
565 if (c->fc->nb_streams < 1)
566 return 0;
567 st = c->fc->streams[c->fc->nb_streams-1];
568
569 if (atom.size < 16)
570 return 0;
571
572 version = avio_r8(pb);
573 flags = avio_rb24(pb);
574
575 layout_tag = avio_rb32(pb);
576 bitmap = avio_rb32(pb);
577 num_descr = avio_rb32(pb);
578
579 if (atom.size < 16ULL + num_descr * 20ULL)
580 return 0;
581
582 av_dlog(c->fc, "chan: size=%ld version=%u flags=%u layout=%u bitmap=%u num_descr=%u\n",
583 atom.size, version, flags, layout_tag, bitmap, num_descr);
584
4274e481 585 label_mask = 0;
1fdf18f4
JR
586 for (i = 0; i < num_descr; i++) {
587 uint32_t label, cflags;
1fdf18f4
JR
588 label = avio_rb32(pb); // mChannelLabel
589 cflags = avio_rb32(pb); // mChannelFlags
d7420e0a
AC
590 avio_rl32(pb); // mCoordinates[0]
591 avio_rl32(pb); // mCoordinates[1]
592 avio_rl32(pb); // mCoordinates[2]
4274e481
AC
593 if (layout_tag == 0) {
594 uint32_t mask_incr = ff_mov_get_channel_label(label);
595 if (mask_incr == 0) {
596 label_mask = 0;
597 break;
598 }
599 label_mask |= mask_incr;
600 }
1fdf18f4 601 }
4274e481
AC
602 if (layout_tag == 0)
603 st->codec->channel_layout = label_mask;
604 else
605 st->codec->channel_layout = ff_mov_get_channel_layout(layout_tag, bitmap);
1fdf18f4
JR
606
607 return 0;
608}
609
85e9e3a9
AC
610static int mov_read_wfex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
611{
612 AVStream *st;
613
614 if (c->fc->nb_streams < 1)
615 return 0;
616 st = c->fc->streams[c->fc->nb_streams-1];
617
618 ff_get_wav_header(pb, st->codec, atom.size);
619
620 return 0;
621}
622
ae628ec1 623static int mov_read_pasp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
6da54074 624{
b7effd4e
AK
625 const int num = avio_rb32(pb);
626 const int den = avio_rb32(pb);
6a63ff19
BC
627 AVStream *st;
628
629 if (c->fc->nb_streams < 1)
630 return 0;
631 st = c->fc->streams[c->fc->nb_streams-1];
632
9044dd83
BC
633 if ((st->sample_aspect_ratio.den != 1 || st->sample_aspect_ratio.num) && // default
634 (den != st->sample_aspect_ratio.den || num != st->sample_aspect_ratio.num)) {
635 av_log(c->fc, AV_LOG_WARNING,
636 "sample aspect ratio already set to %d:%d, ignoring 'pasp' atom (%d:%d)\n",
637 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
638 num, den);
639 } else if (den != 0) {
6da54074
BC
640 st->sample_aspect_ratio.num = num;
641 st->sample_aspect_ratio.den = den;
642 }
643 return 0;
644}
645
5ca1d879 646/* this atom contains actual media data */
ae628ec1 647static int mov_read_mdat(MOVContext *c, AVIOContext *pb, MOVAtom atom)
6cea494e 648{
5a7ba586 649 if (atom.size == 0) /* wrong one (MP4) */
5ca1d879
ZK
650 return 0;
651 c->found_mdat=1;
5ca1d879
ZK
652 return 0; /* now go for moov */
653}
654
7b5252ce 655/* read major brand, minor version and compatible brands and store them as metadata */
ae628ec1 656static int mov_read_ftyp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
4ea28253 657{
7b5252ce 658 uint32_t minor_ver;
659 int comp_brand_size;
660 char minor_ver_str[11]; /* 32 bit integer -> 10 digits + null */
661 char* comp_brands_str;
662 uint8_t type[5] = {0};
663
b7effd4e 664 avio_read(pb, type, 4);
a42bf191 665 if (strcmp(type, "qt "))
152e9a43 666 c->isom = 1;
a512446e 667 av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
d2d67e42 668 av_dict_set(&c->fc->metadata, "major_brand", type, 0);
b7effd4e 669 minor_ver = avio_rb32(pb); /* minor version */
7b5252ce 670 snprintf(minor_ver_str, sizeof(minor_ver_str), "%d", minor_ver);
d2d67e42 671 av_dict_set(&c->fc->metadata, "minor_version", minor_ver_str, 0);
7b5252ce 672
673 comp_brand_size = atom.size - 8;
674 if (comp_brand_size < 0)
bcd5d979 675 return AVERROR_INVALIDDATA;
7b5252ce 676 comp_brands_str = av_malloc(comp_brand_size + 1); /* Add null terminator */
677 if (!comp_brands_str)
678 return AVERROR(ENOMEM);
b7effd4e 679 avio_read(pb, comp_brands_str, comp_brand_size);
7b5252ce 680 comp_brands_str[comp_brand_size] = 0;
d2d67e42 681 av_dict_set(&c->fc->metadata, "compatible_brands", comp_brands_str, 0);
7b5252ce 682 av_freep(&comp_brands_str);
683
4ea28253
BC
684 return 0;
685}
686
5ca1d879 687/* this atom should contain all header atoms */
ae628ec1 688static int mov_read_moov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
5ca1d879 689{
bcd5d979
DH
690 int ret;
691
692 if ((ret = mov_read_default(c, pb, atom)) < 0)
693 return ret;
5ca1d879
ZK
694 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
695 /* so we don't parse the whole file if over a network */
696 c->found_moov=1;
5ca1d879
ZK
697 return 0; /* now go for mdat */
698}
699
ae628ec1 700static int mov_read_moof(MOVContext *c, AVIOContext *pb, MOVAtom atom)
61aedb0f 701{
a2704c97 702 c->fragment.moof_offset = avio_tell(pb) - 8;
3583d7cf 703 av_dlog(c->fc, "moof offset %"PRIx64"\n", c->fragment.moof_offset);
61aedb0f
BC
704 return mov_read_default(c, pb, atom);
705}
5ca1d879 706
d2d67e42 707static void mov_metadata_creation_time(AVDictionary **metadata, time_t time)
7df22143
AJ
708{
709 char buffer[32];
710 if (time) {
5e2202d6 711 struct tm *ptm;
7df22143 712 time -= 2082844800; /* seconds between 1904-01-01 and Epoch */
5e2202d6
BC
713 ptm = gmtime(&time);
714 if (!ptm) return;
715 strftime(buffer, sizeof(buffer), "%Y-%m-%d %H:%M:%S", ptm);
d2d67e42 716 av_dict_set(metadata, "creation_time", buffer, 0);
7df22143
AJ
717 }
718}
719
ae628ec1 720static int mov_read_mdhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
5ca1d879 721{
6a63ff19
BC
722 AVStream *st;
723 MOVStreamContext *sc;
724 int version;
49674dd0 725 char language[4] = {0};
dce25564 726 unsigned lang;
7df22143 727 time_t creation_time;
5ca1d879 728
6a63ff19
BC
729 if (c->fc->nb_streams < 1)
730 return 0;
731 st = c->fc->streams[c->fc->nb_streams-1];
732 sc = st->priv_data;
733
b7effd4e 734 version = avio_r8(pb);
bcd5d979
DH
735 if (version > 1) {
736 av_log_ask_for_sample(c, "unsupported version %d\n", version);
737 return AVERROR_PATCHWELCOME;
738 }
b7effd4e 739 avio_rb24(pb); /* flags */
f444b977 740 if (version == 1) {
b7effd4e
AK
741 creation_time = avio_rb64(pb);
742 avio_rb64(pb);
f444b977 743 } else {
b7effd4e
AK
744 creation_time = avio_rb32(pb);
745 avio_rb32(pb); /* modification time */
f444b977 746 }
7df22143 747 mov_metadata_creation_time(&st->metadata, creation_time);
5ca1d879 748
b7effd4e
AK
749 sc->time_scale = avio_rb32(pb);
750 st->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
5ca1d879 751
b7effd4e 752 lang = avio_rb16(pb); /* language */
49674dd0 753 if (ff_mov_lang_to_iso639(lang, language))
d2d67e42 754 av_dict_set(&st->metadata, "language", language, 0);
b7effd4e 755 avio_rb16(pb); /* quality */
5ca1d879
ZK
756
757 return 0;
758}
759
ae628ec1 760static int mov_read_mvhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
5ca1d879 761{
7df22143 762 time_t creation_time;
b7effd4e
AK
763 int version = avio_r8(pb); /* version */
764 avio_rb24(pb); /* flags */
5ca1d879 765
1175561e 766 if (version == 1) {
b7effd4e
AK
767 creation_time = avio_rb64(pb);
768 avio_rb64(pb);
1175561e 769 } else {
b7effd4e
AK
770 creation_time = avio_rb32(pb);
771 avio_rb32(pb); /* modification time */
1175561e 772 }
7df22143 773 mov_metadata_creation_time(&c->fc->metadata, creation_time);
b7effd4e 774 c->time_scale = avio_rb32(pb); /* time scale */
f8c18cd7 775
dfd2a005 776 av_dlog(c->fc, "time scale = %i\n", c->time_scale);
f8c18cd7 777
b7effd4e
AK
778 c->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */
779 avio_rb32(pb); /* preferred scale */
5ca1d879 780
b7effd4e 781 avio_rb16(pb); /* preferred volume */
5ca1d879 782
45a8a02a 783 avio_skip(pb, 10); /* reserved */
5ca1d879 784
45a8a02a 785 avio_skip(pb, 36); /* display matrix */
5ca1d879 786
b7effd4e
AK
787 avio_rb32(pb); /* preview time */
788 avio_rb32(pb); /* preview duration */
789 avio_rb32(pb); /* poster time */
790 avio_rb32(pb); /* selection time */
791 avio_rb32(pb); /* selection duration */
792 avio_rb32(pb); /* current time */
793 avio_rb32(pb); /* next track ID */
5ca1d879
ZK
794
795 return 0;
796}
797
ae628ec1 798static int mov_read_smi(MOVContext *c, AVIOContext *pb, MOVAtom atom)
9ed83b0a 799{
6a63ff19
BC
800 AVStream *st;
801
802 if (c->fc->nb_streams < 1)
803 return 0;
804 st = c->fc->streams[c->fc->nb_streams-1];
9ed83b0a 805
5a7ba586 806 if ((uint64_t)atom.size > (1<<30))
bcd5d979 807 return AVERROR_INVALIDDATA;
115329f1 808
9ed83b0a
ZK
809 // currently SVQ3 decoder expect full STSD header - so let's fake it
810 // this should be fixed and just SMI header should be passed
01f4895c 811 av_free(st->codec->extradata);
b014dd76
BC
812 st->codec->extradata = av_mallocz(atom.size + 0x5a + FF_INPUT_BUFFER_PADDING_SIZE);
813 if (!st->codec->extradata)
814 return AVERROR(ENOMEM);
17871a02
BC
815 st->codec->extradata_size = 0x5a + atom.size;
816 memcpy(st->codec->extradata, "SVQ3", 4); // fake
b7effd4e 817 avio_read(pb, st->codec->extradata + 0x5a, atom.size);
dfd2a005 818 av_dlog(c->fc, "Reading SMI %"PRId64" %s\n", atom.size, st->codec->extradata + 0x5a);
9ed83b0a
ZK
819 return 0;
820}
5ca1d879 821
ae628ec1 822static int mov_read_enda(MOVContext *c, AVIOContext *pb, MOVAtom atom)
de23f234 823{
6a63ff19
BC
824 AVStream *st;
825 int little_endian;
826
827 if (c->fc->nb_streams < 1)
828 return 0;
829 st = c->fc->streams[c->fc->nb_streams-1];
de23f234 830
b7effd4e 831 little_endian = avio_rb16(pb);
dfd2a005 832 av_dlog(c->fc, "enda %d\n", little_endian);
fa50a027 833 if (little_endian == 1) {
de23f234
BC
834 switch (st->codec->codec_id) {
835 case CODEC_ID_PCM_S24BE:
836 st->codec->codec_id = CODEC_ID_PCM_S24LE;
837 break;
838 case CODEC_ID_PCM_S32BE:
839 st->codec->codec_id = CODEC_ID_PCM_S32LE;
840 break;
a1ef2c4b
PR
841 case CODEC_ID_PCM_F32BE:
842 st->codec->codec_id = CODEC_ID_PCM_F32LE;
843 break;
844 case CODEC_ID_PCM_F64BE:
845 st->codec->codec_id = CODEC_ID_PCM_F64LE;
846 break;
de23f234
BC
847 default:
848 break;
849 }
850 }
851 return 0;
852}
853
4bf3c8f2
AC
854static int mov_read_fiel(MOVContext *c, AVIOContext *pb, MOVAtom atom)
855{
856 AVStream *st;
857 unsigned mov_field_order;
858 enum AVFieldOrder decoded_field_order = AV_FIELD_UNKNOWN;
859
860 if (c->fc->nb_streams < 1) // will happen with jp2 files
861 return 0;
862 st = c->fc->streams[c->fc->nb_streams-1];
863 if (atom.size < 2)
864 return AVERROR_INVALIDDATA;
865 mov_field_order = avio_rb16(pb);
866 if ((mov_field_order & 0xFF00) == 0x0100)
867 decoded_field_order = AV_FIELD_PROGRESSIVE;
868 else if ((mov_field_order & 0xFF00) == 0x0200) {
869 switch (mov_field_order & 0xFF) {
870 case 0x01: decoded_field_order = AV_FIELD_TT;
871 break;
872 case 0x06: decoded_field_order = AV_FIELD_BB;
873 break;
874 case 0x09: decoded_field_order = AV_FIELD_TB;
875 break;
876 case 0x0E: decoded_field_order = AV_FIELD_BT;
877 break;
878 }
879 }
880 if (decoded_field_order == AV_FIELD_UNKNOWN && mov_field_order) {
881 av_log(NULL, AV_LOG_ERROR, "Unknown MOV field order 0x%04x\n", mov_field_order);
882 }
883 st->codec->field_order = decoded_field_order;
884
885 return 0;
886}
887
014a5102 888/* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
ae628ec1 889static int mov_read_extradata(MOVContext *c, AVIOContext *pb, MOVAtom atom)
de23f234 890{
27134437
BC
891 AVStream *st;
892 uint64_t size;
68bc33fa 893 uint8_t *buf;
27134437
BC
894
895 if (c->fc->nb_streams < 1) // will happen with jp2 files
896 return 0;
897 st= c->fc->streams[c->fc->nb_streams-1];
898 size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
5a7ba586 899 if (size > INT_MAX || (uint64_t)atom.size > INT_MAX)
bcd5d979 900 return AVERROR_INVALIDDATA;
68bc33fa 901 buf= av_realloc(st->codec->extradata, size);
5a7ba586 902 if (!buf)
bcd5d979 903 return AVERROR(ENOMEM);
68bc33fa
BC
904 st->codec->extradata= buf;
905 buf+= st->codec->extradata_size;
906 st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE;
907 AV_WB32( buf , atom.size + 8);
908 AV_WL32( buf + 4, atom.type);
b7effd4e 909 avio_read(pb, buf + 8, atom.size);
de23f234
BC
910 return 0;
911}
912
ae628ec1 913static int mov_read_wave(MOVContext *c, AVIOContext *pb, MOVAtom atom)
d9b1c197 914{
6a63ff19
BC
915 AVStream *st;
916
917 if (c->fc->nb_streams < 1)
918 return 0;
919 st = c->fc->streams[c->fc->nb_streams-1];
d9b1c197 920
5a7ba586 921 if ((uint64_t)atom.size > (1<<30))
bcd5d979 922 return AVERROR_INVALIDDATA;
115329f1 923
ed19fafd
SS
924 if (st->codec->codec_id == CODEC_ID_QDM2 || st->codec->codec_id == CODEC_ID_QDMC) {
925 // pass all frma atom to codec, needed at least for QDMC and QDM2
3840147e 926 av_free(st->codec->extradata);
b014dd76
BC
927 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
928 if (!st->codec->extradata)
929 return AVERROR(ENOMEM);
3840147e 930 st->codec->extradata_size = atom.size;
b7effd4e 931 avio_read(pb, st->codec->extradata, atom.size);
3840147e 932 } else if (atom.size > 8) { /* to read frma, esds atoms */
bcd5d979
DH
933 int ret;
934 if ((ret = mov_read_default(c, pb, atom)) < 0)
935 return ret;
5c72cad8 936 } else
45a8a02a 937 avio_skip(pb, atom.size);
d9b1c197
RT
938 return 0;
939}
940
bde24601
BC
941/**
942 * This function reads atom content and puts data in extradata without tag
943 * nor size unlike mov_read_extradata.
944 */
ae628ec1 945static int mov_read_glbl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
169eb021 946{
6a63ff19
BC
947 AVStream *st;
948
949 if (c->fc->nb_streams < 1)
950 return 0;
951 st = c->fc->streams[c->fc->nb_streams-1];
169eb021 952
5a7ba586 953 if ((uint64_t)atom.size > (1<<30))
bcd5d979 954 return AVERROR_INVALIDDATA;
568e18b1 955
4bf3c8f2
AC
956 if (atom.size >= 10) {
957 // Broken files created by legacy versions of Libav and FFmpeg will
958 // wrap a whole fiel atom inside of a glbl atom.
959 unsigned size = avio_rb32(pb);
960 unsigned type = avio_rl32(pb);
961 avio_seek(pb, -8, SEEK_CUR);
962 if (type == MKTAG('f','i','e','l') && size == atom.size)
963 return mov_read_default(c, pb, atom);
964 }
01f4895c 965 av_free(st->codec->extradata);
b014dd76
BC
966 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
967 if (!st->codec->extradata)
968 return AVERROR(ENOMEM);
01f4895c 969 st->codec->extradata_size = atom.size;
b7effd4e 970 avio_read(pb, st->codec->extradata, atom.size);
169eb021
MM
971 return 0;
972}
973
653d7aeb
MS
974/**
975 * An strf atom is a BITMAPINFOHEADER struct. This struct is 40 bytes itself,
976 * but can have extradata appended at the end after the 40 bytes belonging
977 * to the struct.
978 */
ae628ec1 979static int mov_read_strf(MOVContext *c, AVIOContext *pb, MOVAtom atom)
653d7aeb
MS
980{
981 AVStream *st;
982
983 if (c->fc->nb_streams < 1)
984 return 0;
985 if (atom.size <= 40)
986 return 0;
987 st = c->fc->streams[c->fc->nb_streams-1];
988
5a7ba586 989 if ((uint64_t)atom.size > (1<<30))
bcd5d979 990 return AVERROR_INVALIDDATA;
653d7aeb
MS
991
992 av_free(st->codec->extradata);
993 st->codec->extradata = av_mallocz(atom.size - 40 + FF_INPUT_BUFFER_PADDING_SIZE);
994 if (!st->codec->extradata)
995 return AVERROR(ENOMEM);
996 st->codec->extradata_size = atom.size - 40;
45a8a02a 997 avio_skip(pb, 40);
b7effd4e 998 avio_read(pb, st->codec->extradata, atom.size - 40);
653d7aeb
MS
999 return 0;
1000}
1001
ae628ec1 1002static int mov_read_stco(MOVContext *c, AVIOContext *pb, MOVAtom atom)
5ca1d879 1003{
6a63ff19
BC
1004 AVStream *st;
1005 MOVStreamContext *sc;
568e18b1 1006 unsigned int i, entries;
5ca1d879 1007
6a63ff19
BC
1008 if (c->fc->nb_streams < 1)
1009 return 0;
1010 st = c->fc->streams[c->fc->nb_streams-1];
1011 sc = st->priv_data;
1012
b7effd4e
AK
1013 avio_r8(pb); /* version */
1014 avio_rb24(pb); /* flags */
5ca1d879 1015
b7effd4e 1016 entries = avio_rb32(pb);
115329f1 1017
52401b82
AC
1018 if (!entries)
1019 return 0;
5a7ba586 1020 if (entries >= UINT_MAX/sizeof(int64_t))
bcd5d979 1021 return AVERROR_INVALIDDATA;
115329f1 1022
9a630c25 1023 sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
5ca1d879 1024 if (!sc->chunk_offsets)
0d8f0abf
BC
1025 return AVERROR(ENOMEM);
1026 sc->chunk_count = entries;
1027
37ffe34b 1028 if (atom.type == MKTAG('s','t','c','o'))
5a7ba586 1029 for (i=0; i<entries; i++)
b7effd4e 1030 sc->chunk_offsets[i] = avio_rb32(pb);
37ffe34b 1031 else if (atom.type == MKTAG('c','o','6','4'))
5a7ba586 1032 for (i=0; i<entries; i++)
b7effd4e 1033 sc->chunk_offsets[i] = avio_rb64(pb);
37ffe34b 1034 else
bcd5d979 1035 return AVERROR_INVALIDDATA;
115329f1 1036
5ca1d879
ZK
1037 return 0;
1038}
1039
2288834f
BC
1040/**
1041 * Compute codec id for 'lpcm' tag.
1042 * See CoreAudioTypes and AudioStreamBasicDescription at Apple.
1043 */
2d423666 1044enum CodecID ff_mov_get_lpcm_codec_id(int bps, int flags)
2288834f
BC
1045{
1046 if (flags & 1) { // floating point
1047 if (flags & 2) { // big endian
1048 if (bps == 32) return CODEC_ID_PCM_F32BE;
7e4b3fb8 1049 else if (bps == 64) return CODEC_ID_PCM_F64BE;
2288834f 1050 } else {
7e4b3fb8
BC
1051 if (bps == 32) return CODEC_ID_PCM_F32LE;
1052 else if (bps == 64) return CODEC_ID_PCM_F64LE;
2288834f
BC
1053 }
1054 } else {
1055 if (flags & 2) {
1056 if (bps == 8)
1057 // signed integer
1058 if (flags & 4) return CODEC_ID_PCM_S8;
1059 else return CODEC_ID_PCM_U8;
1060 else if (bps == 16) return CODEC_ID_PCM_S16BE;
1061 else if (bps == 24) return CODEC_ID_PCM_S24BE;
1062 else if (bps == 32) return CODEC_ID_PCM_S32BE;
1063 } else {
1064 if (bps == 8)
1065 if (flags & 4) return CODEC_ID_PCM_S8;
1066 else return CODEC_ID_PCM_U8;
021b8ae3 1067 else if (bps == 16) return CODEC_ID_PCM_S16LE;
2288834f
BC
1068 else if (bps == 24) return CODEC_ID_PCM_S24LE;
1069 else if (bps == 32) return CODEC_ID_PCM_S32LE;
1070 }
1071 }
fb65d2ca 1072 return CODEC_ID_NONE;
2288834f
BC
1073}
1074
ae628ec1 1075int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries)
5ca1d879 1076{
6a63ff19
BC
1077 AVStream *st;
1078 MOVStreamContext *sc;
dc2cabd0 1079 int j, pseudo_stream_id;
b595afaa 1080
6a63ff19
BC
1081 if (c->fc->nb_streams < 1)
1082 return 0;
1083 st = c->fc->streams[c->fc->nb_streams-1];
1084 sc = st->priv_data;
1085
5a7ba586 1086 for (pseudo_stream_id=0; pseudo_stream_id<entries; pseudo_stream_id++) {
117a9190 1087 //Parsing Sample description table
b6a17df4 1088 enum CodecID id;
28155113 1089 int dref_id = 1;
3491866a 1090 MOVAtom a = { AV_RL32("stsd") };
a2704c97 1091 int64_t start_pos = avio_tell(pb);
b7effd4e
AK
1092 int size = avio_rb32(pb); /* size */
1093 uint32_t format = avio_rl32(pb); /* data format */
5cd62665 1094
28155113 1095 if (size >= 16) {
b7effd4e
AK
1096 avio_rb32(pb); /* reserved */
1097 avio_rb16(pb); /* reserved */
1098 dref_id = avio_rb16(pb);
28155113 1099 }
0e7eed09 1100
744a9c75 1101 if (st->codec->codec_tag &&
978677a7 1102 st->codec->codec_tag != format &&
1a40491e 1103 (c->fc->video_codec_id ? ff_codec_get_id(codec_movvideo_tags, format) != c->fc->video_codec_id
1c126b4f 1104 : st->codec->codec_tag != MKTAG('j','p','e','g'))
744a9c75 1105 ){
7ce68923
DB
1106 /* Multiple fourcc, we skip JPEG. This is not correct, we should
1107 * export it as a separate AVStream but this needs a few changes
1108 * in the MOV demuxer, patch welcome. */
adc73054 1109 multiple_stsd:
285a3da9 1110 av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n");
45a8a02a 1111 avio_skip(pb, size - (avio_tell(pb) - start_pos));
e7cc4b52
BC
1112 continue;
1113 }
adc73054
BC
1114 /* we cannot demux concatenated h264 streams because of different extradata */
1115 if (st->codec->codec_tag && st->codec->codec_tag == AV_RL32("avc1"))
1116 goto multiple_stsd;
978677a7 1117 sc->pseudo_stream_id = st->codec->codec_tag ? -1 : pseudo_stream_id;
221e21b7 1118 sc->dref_id= dref_id;
e7cc4b52 1119
bb270c08 1120 st->codec->codec_tag = format;
1a40491e 1121 id = ff_codec_get_id(codec_movaudio_tags, format);
86b61d42 1122 if (id<=0 && ((format&0xFFFF) == 'm'+('s'<<8) || (format&0xFFFF) == 'T'+('S'<<8)))
8fc0162a 1123 id = ff_codec_get_id(ff_codec_wav_tags, av_bswap32(format)&0xFFFF);
bca7db35 1124
72415b2a
SS
1125 if (st->codec->codec_type != AVMEDIA_TYPE_VIDEO && id > 0) {
1126 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
1127 } else if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO && /* do not overwrite codec type */
1c126b4f 1128 format && format != MKTAG('m','p','4','s')) { /* skip old asf mpeg4 tag */
1a40491e 1129 id = ff_codec_get_id(codec_movvideo_tags, format);
99487f42 1130 if (id <= 0)
1a40491e 1131 id = ff_codec_get_id(ff_codec_bmp_tags, format);
99487f42 1132 if (id > 0)
72415b2a 1133 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
5a7ba586 1134 else if (st->codec->codec_type == AVMEDIA_TYPE_DATA){
1a40491e 1135 id = ff_codec_get_id(ff_codec_movsubtitle_tags, format);
5a7ba586 1136 if (id > 0)
72415b2a 1137 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
1e3c9307 1138 }
99487f42
BC
1139 }
1140
dfd2a005 1141 av_dlog(c->fc, "size=%d 4CC= %c%c%c%c codec_type=%d\n", size,
29c90869
BC
1142 (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff,
1143 (format >> 24) & 0xff, st->codec->codec_type);
a20da52c 1144
5a7ba586 1145 if (st->codec->codec_type==AVMEDIA_TYPE_VIDEO) {
08a186c6 1146 unsigned int color_depth, len;
baf9fb32 1147 int color_greyscale;
baf9fb32 1148
01f4895c 1149 st->codec->codec_id = id;
b7effd4e
AK
1150 avio_rb16(pb); /* version */
1151 avio_rb16(pb); /* revision level */
1152 avio_rb32(pb); /* vendor */
1153 avio_rb32(pb); /* temporal quality */
1154 avio_rb32(pb); /* spatial quality */
3cb4ee51 1155
b7effd4e
AK
1156 st->codec->width = avio_rb16(pb); /* width */
1157 st->codec->height = avio_rb16(pb); /* height */
3cb4ee51 1158
b7effd4e
AK
1159 avio_rb32(pb); /* horiz resolution */
1160 avio_rb32(pb); /* vert resolution */
1161 avio_rb32(pb); /* data size, always 0 */
1162 avio_rb16(pb); /* frames per samples */
f8c18cd7 1163
b7effd4e 1164 len = avio_r8(pb); /* codec name, pascal string */
08a186c6
BC
1165 if (len > 31)
1166 len = 31;
1167 mov_read_mac_string(c, pb, len, st->codec->codec_name, 32);
1168 if (len < 31)
45a8a02a 1169 avio_skip(pb, 31 - len);
08a186c6
BC
1170 /* codec_tag YV12 triggers an UV swap in rawdec.c */
1171 if (!memcmp(st->codec->codec_name, "Planar Y'CbCr 8-bit 4:2:0", 25))
1172 st->codec->codec_tag=MKTAG('I', '4', '2', '0');
5cd62665 1173
b7effd4e
AK
1174 st->codec->bits_per_coded_sample = avio_rb16(pb); /* depth */
1175 st->codec->color_table_id = avio_rb16(pb); /* colortable id */
dfd2a005 1176 av_dlog(c->fc, "depth %d, ctab id %d\n",
dd1c8f3e 1177 st->codec->bits_per_coded_sample, st->codec->color_table_id);
b595afaa 1178 /* figure out the palette situation */
dd1c8f3e
LA
1179 color_depth = st->codec->bits_per_coded_sample & 0x1F;
1180 color_greyscale = st->codec->bits_per_coded_sample & 0x20;
b595afaa
MM
1181
1182 /* if the depth is 2, 4, or 8 bpp, file is palettized */
115329f1 1183 if ((color_depth == 2) || (color_depth == 4) ||
b595afaa 1184 (color_depth == 8)) {
47e1d7ef
BC
1185 /* for palette traversal */
1186 unsigned int color_start, color_count, color_end;
1187 unsigned char r, g, b;
1188
b595afaa 1189 if (color_greyscale) {
47e1d7ef 1190 int color_index, color_dec;
b595afaa 1191 /* compute the greyscale palette */
dd1c8f3e 1192 st->codec->bits_per_coded_sample = color_depth;
b595afaa
MM
1193 color_count = 1 << color_depth;
1194 color_index = 255;
1195 color_dec = 256 / (color_count - 1);
1196 for (j = 0; j < color_count; j++) {
1197 r = g = b = color_index;
2d8591c2 1198 sc->palette[j] =
b595afaa
MM
1199 (r << 16) | (g << 8) | (b);
1200 color_index -= color_dec;
1201 if (color_index < 0)
1202 color_index = 0;
1203 }
71f36235 1204 } else if (st->codec->color_table_id) {
47e1d7ef 1205 const uint8_t *color_table;
b595afaa
MM
1206 /* if flag bit 3 is set, use the default palette */
1207 color_count = 1 << color_depth;
1208 if (color_depth == 2)
a90466f7 1209 color_table = ff_qt_default_palette_4;
b595afaa 1210 else if (color_depth == 4)
a90466f7 1211 color_table = ff_qt_default_palette_16;
b595afaa 1212 else
a90466f7 1213 color_table = ff_qt_default_palette_256;
b595afaa
MM
1214
1215 for (j = 0; j < color_count; j++) {
2121b160
RB
1216 r = color_table[j * 3 + 0];
1217 g = color_table[j * 3 + 1];
1218 b = color_table[j * 3 + 2];
2d8591c2 1219 sc->palette[j] =
b595afaa
MM
1220 (r << 16) | (g << 8) | (b);
1221 }
b595afaa 1222 } else {
b595afaa 1223 /* load the palette from the file */
b7effd4e
AK
1224 color_start = avio_rb32(pb);
1225 color_count = avio_rb16(pb);
1226 color_end = avio_rb16(pb);
8b35bd80
MM
1227 if ((color_start <= 255) &&
1228 (color_end <= 255)) {
9de2919c
MM
1229 for (j = color_start; j <= color_end; j++) {
1230 /* each R, G, or B component is 16 bits;
1231 * only use the top 8 bits; skip alpha bytes
1232 * up front */
b7effd4e
AK
1233 avio_r8(pb);
1234 avio_r8(pb);
1235 r = avio_r8(pb);
1236 avio_r8(pb);
1237 g = avio_r8(pb);
1238 avio_r8(pb);
1239 b = avio_r8(pb);
1240 avio_r8(pb);
2d8591c2 1241 sc->palette[j] =
9de2919c 1242 (r << 16) | (g << 8) | (b);
8b35bd80 1243 }
b595afaa
MM
1244 }
1245 }
2d8591c2 1246 sc->has_palette = 1;
e49da827 1247 }
5a7ba586 1248 } else if (st->codec->codec_type==AVMEDIA_TYPE_AUDIO) {
aaef2bb3 1249 int bits_per_sample, flags;
b7effd4e 1250 uint16_t version = avio_rb16(pb);
b595afaa 1251
99487f42 1252 st->codec->codec_id = id;
b7effd4e
AK
1253 avio_rb16(pb); /* revision level */
1254 avio_rb32(pb); /* vendor */
6d6d7970 1255
b7effd4e 1256 st->codec->channels = avio_rb16(pb); /* channel count */
dfd2a005 1257 av_dlog(c->fc, "audio channels %d\n", st->codec->channels);
b7effd4e 1258 st->codec->bits_per_coded_sample = avio_rb16(pb); /* sample size */
de23f234 1259
b7effd4e
AK
1260 sc->audio_cid = avio_rb16(pb);
1261 avio_rb16(pb); /* packet size = 0 */
de23f234 1262
b7effd4e 1263 st->codec->sample_rate = ((avio_rb32(pb) >> 16));
de23f234 1264
5ef3ad59 1265 //Read QT version 1 fields. In version 0 these do not exist.
dfd2a005 1266 av_dlog(c->fc, "version =%d, isom =%d\n",version,c->isom);
5a7ba586
LB
1267 if (!c->isom) {
1268 if (version==1) {
b7effd4e
AK
1269 sc->samples_per_frame = avio_rb32(pb);
1270 avio_rb32(pb); /* bytes per packet */
1271 sc->bytes_per_frame = avio_rb32(pb);
1272 avio_rb32(pb); /* bytes per sample */
5a7ba586 1273 } else if (version==2) {
b7effd4e 1274 avio_rb32(pb); /* sizeof struct only */
3383a53e 1275 st->codec->sample_rate = av_int2double(avio_rb64(pb)); /* float 64 */
b7effd4e
AK
1276 st->codec->channels = avio_rb32(pb);
1277 avio_rb32(pb); /* always 0x7F000000 */
1278 st->codec->bits_per_coded_sample = avio_rb32(pb); /* bits per channel if sound is uncompressed */
1279 flags = avio_rb32(pb); /* lpcm format specific flag */
1280 sc->bytes_per_frame = avio_rb32(pb); /* bytes per audio packet if constant */
1281 sc->samples_per_frame = avio_rb32(pb); /* lpcm frames per audio packet if constant */
2288834f 1282 if (format == MKTAG('l','p','c','m'))
2d423666 1283 st->codec->codec_id = ff_mov_get_lpcm_codec_id(st->codec->bits_per_coded_sample, flags);
5ef3ad59
BC
1284 }
1285 }
1286
de23f234 1287 switch (st->codec->codec_id) {
b72708f8
BC
1288 case CODEC_ID_PCM_S8:
1289 case CODEC_ID_PCM_U8:
dd1c8f3e 1290 if (st->codec->bits_per_coded_sample == 16)
b72708f8
BC
1291 st->codec->codec_id = CODEC_ID_PCM_S16BE;
1292 break;
0dd39bfe 1293 case CODEC_ID_PCM_S16LE:
de23f234 1294 case CODEC_ID_PCM_S16BE:
dd1c8f3e 1295 if (st->codec->bits_per_coded_sample == 8)
de23f234 1296 st->codec->codec_id = CODEC_ID_PCM_S8;
dd1c8f3e 1297 else if (st->codec->bits_per_coded_sample == 24)
6b477e1b
BC
1298 st->codec->codec_id =
1299 st->codec->codec_id == CODEC_ID_PCM_S16BE ?
1300 CODEC_ID_PCM_S24BE : CODEC_ID_PCM_S24LE;
de23f234 1301 break;
53152765
BC
1302 /* set values for old format before stsd version 1 appeared */
1303 case CODEC_ID_MACE3:
1304 sc->samples_per_frame = 6;
1305 sc->bytes_per_frame = 2*st->codec->channels;
1306 break;
1307 case CODEC_ID_MACE6:
1308 sc->samples_per_frame = 6;
1309 sc->bytes_per_frame = 1*st->codec->channels;
1310 break;
1311 case CODEC_ID_ADPCM_IMA_QT:
1312 sc->samples_per_frame = 64;
1313 sc->bytes_per_frame = 34*st->codec->channels;
1314 break;
cc326d2b
BC
1315 case CODEC_ID_GSM:
1316 sc->samples_per_frame = 160;
1317 sc->bytes_per_frame = 33;
1318 break;
de23f234
BC
1319 default:
1320 break;
6d6d7970 1321 }
14342fd5 1322
9770089d
BC
1323 bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
1324 if (bits_per_sample) {
dd1c8f3e 1325 st->codec->bits_per_coded_sample = bits_per_sample;
9770089d
BC
1326 sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
1327 }
5a7ba586 1328 } else if (st->codec->codec_type==AVMEDIA_TYPE_SUBTITLE){
58e9f2ed
DC
1329 // ttxt stsd contains display flags, justification, background
1330 // color, fonts, and default styles, so fake an atom to read it
a2704c97 1331 MOVAtom fake_atom = { .size = size - (avio_tell(pb) - start_pos) };
fb9ac654 1332 if (format != AV_RL32("mp4s")) // mp4s contains a regular esds atom
3dd36041 1333 mov_read_glbl(c, pb, fake_atom);
cc8d87b7 1334 st->codec->codec_id= id;
6cdbff63
DC
1335 st->codec->width = sc->width;
1336 st->codec->height = sc->height;
de23f234
BC
1337 } else {
1338 /* other codec type, just skip (rtp, mp4s, tmcd ...) */
45a8a02a 1339 avio_skip(pb, size - (avio_tell(pb) - start_pos));
6cea494e 1340 }
de23f234 1341 /* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */
a2704c97 1342 a.size = size - (avio_tell(pb) - start_pos);
9cf0419b 1343 if (a.size > 8) {
bcd5d979
DH
1344 int ret;
1345 if ((ret = mov_read_default(c, pb, a)) < 0)
1346 return ret;
9cf0419b 1347 } else if (a.size > 0)
45a8a02a 1348 avio_skip(pb, a.size);
6cea494e 1349 }
115329f1 1350
5a7ba586 1351 if (st->codec->codec_type==AVMEDIA_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1)
302c389e 1352 st->codec->sample_rate= sc->time_scale;
e31bd3e3 1353
d00f8e17 1354 /* special codec parameters handling */
e31bd3e3 1355 switch (st->codec->codec_id) {
b250f9c6 1356#if CONFIG_DV_DEMUXER
b60c0454 1357 case CODEC_ID_DVAUDIO:
8e2fd8e1 1358 c->dv_fctx = avformat_alloc_context();
ab88b25f 1359 c->dv_demux = avpriv_dv_init_demux(c->dv_fctx);
b60c0454
BC
1360 if (!c->dv_demux) {
1361 av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
bcd5d979 1362 return AVERROR(ENOMEM);
b60c0454
BC
1363 }
1364 sc->dv_audio_container = 1;
1365 st->codec->codec_id = CODEC_ID_PCM_S16LE;
1366 break;
989ac5a6 1367#endif
b95319a2 1368 /* no ifdef since parameters are always those */
3f78a3a9 1369 case CODEC_ID_QCELP:
17ad7b24
BC
1370 // force sample rate for qcelp when not stored in mov
1371 if (st->codec->codec_tag != MKTAG('Q','c','l','p'))
1372 st->codec->sample_rate = 8000;
73b458e3 1373 st->codec->frame_size= 160;
061f407e 1374 st->codec->channels= 1; /* really needed */
73b458e3 1375 break;
b95319a2 1376 case CODEC_ID_AMR_NB:
b95319a2 1377 st->codec->channels= 1; /* really needed */
f06188d5 1378 /* force sample rate for amr, stsd in 3gp does not store sample rate */
237f1329
CEH
1379 st->codec->sample_rate = 8000;
1380 /* force frame_size, too, samples_per_frame isn't always set properly */
1381 st->codec->frame_size = 160;
1382 break;
1383 case CODEC_ID_AMR_WB:
1384 st->codec->channels = 1;
1385 st->codec->sample_rate = 16000;
1386 st->codec->frame_size = 320;
b95319a2 1387 break;
a41104f8 1388 case CODEC_ID_MP2:
c59f24e6 1389 case CODEC_ID_MP3:
72415b2a 1390 st->codec->codec_type = AVMEDIA_TYPE_AUDIO; /* force type after stsd for m1a hdlr */
57004ff1 1391 st->need_parsing = AVSTREAM_PARSE_FULL;
a41104f8 1392 break;
5610f20e 1393 case CODEC_ID_GSM:
74e9b9ae
BC
1394 case CODEC_ID_ADPCM_MS:
1395 case CODEC_ID_ADPCM_IMA_WAV:
f2589642 1396 st->codec->frame_size = sc->samples_per_frame;
74e9b9ae
BC
1397 st->codec->block_align = sc->bytes_per_frame;
1398 break;
be511925 1399 case CODEC_ID_ALAC:
a1532824 1400 if (st->codec->extradata_size == 36) {
364df7b7
BC
1401 st->codec->frame_size = AV_RB32(st->codec->extradata+12);
1402 st->codec->channels = AV_RB8 (st->codec->extradata+21);
c6f1e29a 1403 st->codec->sample_rate = AV_RB32(st->codec->extradata+32);
a1532824 1404 }
be511925 1405 break;
e31bd3e3
BC
1406 default:
1407 break;
1408 }
5cd62665 1409
6cea494e
ZK
1410 return 0;
1411}
1412
ae628ec1 1413static int mov_read_stsd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
dc2cabd0
MS
1414{
1415 int entries;
1416
b7effd4e
AK
1417 avio_r8(pb); /* version */
1418 avio_rb24(pb); /* flags */
1419 entries = avio_rb32(pb);
dc2cabd0
MS
1420
1421 return ff_mov_read_stsd_entries(c, pb, entries);
1422}
1423
ae628ec1 1424static int mov_read_stsc(MOVContext *c, AVIOContext *pb, MOVAtom atom)
6cea494e 1425{
6a63ff19
BC
1426 AVStream *st;
1427 MOVStreamContext *sc;
568e18b1 1428 unsigned int i, entries;
b6a17df4 1429
6a63ff19
BC
1430 if (c->fc->nb_streams < 1)
1431 return 0;
1432 st = c->fc->streams[c->fc->nb_streams-1];
1433 sc = st->priv_data;
1434
b7effd4e
AK
1435 avio_r8(pb); /* version */
1436 avio_rb24(pb); /* flags */
6cea494e 1437
b7effd4e 1438 entries = avio_rb32(pb);
115329f1 1439
dfd2a005 1440 av_dlog(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
f8c18cd7 1441
52401b82
AC
1442 if (!entries)
1443 return 0;
5a7ba586 1444 if (entries >= UINT_MAX / sizeof(*sc->stsc_data))
bcd5d979 1445 return AVERROR_INVALIDDATA;
04e06cfa
BC
1446 sc->stsc_data = av_malloc(entries * sizeof(*sc->stsc_data));
1447 if (!sc->stsc_data)
0d8f0abf
BC
1448 return AVERROR(ENOMEM);
1449 sc->stsc_count = entries;
1450
5a7ba586 1451 for (i=0; i<entries; i++) {
b7effd4e
AK
1452 sc->stsc_data[i].first = avio_rb32(pb);
1453 sc->stsc_data[i].count = avio_rb32(pb);
1454 sc->stsc_data[i].id = avio_rb32(pb);
6cea494e
ZK
1455 }
1456 return 0;
1457}
1458
ae628ec1 1459static int mov_read_stps(MOVContext *c, AVIOContext *pb, MOVAtom atom)
171a3531
BC
1460{
1461 AVStream *st;
1462 MOVStreamContext *sc;
1463 unsigned i, entries;
1464
1465 if (c->fc->nb_streams < 1)
1466 return 0;
1467 st = c->fc->streams[c->fc->nb_streams-1];
1468 sc = st->priv_data;
1469
b7effd4e 1470 avio_rb32(pb); // version + flags
171a3531 1471
b7effd4e 1472 entries = avio_rb32(pb);
171a3531 1473 if (entries >= UINT_MAX / sizeof(*sc->stps_data))
bcd5d979 1474 return AVERROR_INVALIDDATA;
171a3531
BC
1475 sc->stps_data = av_malloc(entries * sizeof(*sc->stps_data));
1476 if (!sc->stps_data)
1477 return AVERROR(ENOMEM);
1478 sc->stps_count = entries;
1479
1480 for (i = 0; i < entries; i++) {
b7effd4e 1481 sc->stps_data[i] = avio_rb32(pb);
dfd2a005 1482 //av_dlog(c->fc, "stps %d\n", sc->stps_data[i]);
171a3531
BC
1483 }
1484
1485 return 0;
1486}
1487
ae628ec1 1488static int mov_read_stss(MOVContext *c, AVIOContext *pb, MOVAtom atom)
247d56f5 1489{
6a63ff19
BC
1490 AVStream *st;
1491 MOVStreamContext *sc;
568e18b1 1492 unsigned int i, entries;
247d56f5 1493
6a63ff19
BC
1494 if (c->fc->nb_streams < 1)
1495 return 0;
1496 st = c->fc->streams[c->fc->nb_streams-1];
1497 sc = st->priv_data;
1498
b7effd4e
AK
1499 avio_r8(pb); /* version */
1500 avio_rb24(pb); /* flags */
247d56f5 1501
b7effd4e 1502 entries = avio_rb32(pb);
115329f1 1503
dfd2a005 1504 av_dlog(c->fc, "keyframe_count = %d\n", entries);
0d8f0abf 1505
5a7ba586 1506 if (entries >= UINT_MAX / sizeof(int))
bcd5d979 1507 return AVERROR_INVALIDDATA;
1c02d96f 1508 sc->keyframes = av_malloc(entries * sizeof(int));
247d56f5 1509 if (!sc->keyframes)
0d8f0abf
BC
1510 return AVERROR(ENOMEM);
1511 sc->keyframe_count = entries;
1512
5a7ba586 1513 for (i=0; i<entries; i++) {
b7effd4e 1514 sc->keyframes[i] = avio_rb32(pb);
dfd2a005 1515 //av_dlog(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
247d56f5
BB
1516 }
1517 return 0;
1518}
1519
ae628ec1 1520static int mov_read_stsz(MOVContext *c, AVIOContext *pb, MOVAtom atom)
6cea494e 1521{
6a63ff19
BC
1522 AVStream *st;
1523 MOVStreamContext *sc;
bd27eed6
AC
1524 unsigned int i, entries, sample_size, field_size, num_bytes;
1525 GetBitContext gb;
1526 unsigned char* buf;
b6a17df4 1527
6a63ff19
BC
1528 if (c->fc->nb_streams < 1)
1529 return 0;
1530 st = c->fc->streams[c->fc->nb_streams-1];
1531 sc = st->priv_data;
1532
b7effd4e
AK
1533 avio_r8(pb); /* version */
1534 avio_rb24(pb); /* flags */
5cd62665 1535
bd27eed6 1536 if (atom.type == MKTAG('s','t','s','z')) {
b7effd4e 1537 sample_size = avio_rb32(pb);
d0dab0ec
AC
1538 if (!sc->sample_size) /* do not overwrite value computed in stsd */
1539 sc->sample_size = sample_size;
1540 field_size = 32;
bd27eed6
AC
1541 } else {
1542 sample_size = 0;
b7effd4e
AK
1543 avio_rb24(pb); /* reserved */
1544 field_size = avio_r8(pb);
bd27eed6 1545 }
b7effd4e 1546 entries = avio_rb32(pb);
0d8f0abf 1547
dfd2a005 1548 av_dlog(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, entries);
568e18b1 1549
6cea494e 1550 sc->sample_count = entries;
b72708f8
BC
1551 if (sample_size)
1552 return 0;
1553
bd27eed6
AC
1554 if (field_size != 4 && field_size != 8 && field_size != 16 && field_size != 32) {
1555 av_log(c->fc, AV_LOG_ERROR, "Invalid sample field size %d\n", field_size);
bcd5d979 1556 return AVERROR_INVALIDDATA;
bd27eed6
AC
1557 }
1558
52401b82
AC
1559 if (!entries)
1560 return 0;
e4bc8af1 1561 if (entries >= UINT_MAX / sizeof(int) || entries >= (UINT_MAX - 4) / field_size)
bcd5d979 1562 return AVERROR_INVALIDDATA;
1c02d96f 1563 sc->sample_sizes = av_malloc(entries * sizeof(int));
b6a17df4 1564 if (!sc->sample_sizes)
0d8f0abf
BC
1565 return AVERROR(ENOMEM);
1566
bd27eed6
AC
1567 num_bytes = (entries*field_size+4)>>3;
1568
08a5b4e9 1569 buf = av_malloc(num_bytes+FF_INPUT_BUFFER_PADDING_SIZE);
bd27eed6
AC
1570 if (!buf) {
1571 av_freep(&sc->sample_sizes);
1572 return AVERROR(ENOMEM);
1573 }
1574
b7effd4e 1575 if (avio_read(pb, buf, num_bytes) < num_bytes) {
bd27eed6
AC
1576 av_freep(&sc->sample_sizes);
1577 av_free(buf);
bcd5d979 1578 return AVERROR_INVALIDDATA;
bd27eed6
AC
1579 }
1580
1581 init_get_bits(&gb, buf, 8*num_bytes);
1582
5a7ba586 1583 for (i=0; i<entries; i++)
bd27eed6
AC
1584 sc->sample_sizes[i] = get_bits_long(&gb, field_size);
1585
1586 av_free(buf);
6cea494e
ZK
1587 return 0;
1588}
1589
ae628ec1 1590static int mov_read_stts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
0147f198 1591{
6a63ff19
BC
1592 AVStream *st;
1593 MOVStreamContext *sc;
568e18b1 1594 unsigned int i, entries;
d957696f
MN
1595 int64_t duration=0;
1596 int64_t total_sample_count=0;
b6a17df4 1597
6a63ff19
BC
1598 if (c->fc->nb_streams < 1)
1599 return 0;
1600 st = c->fc->streams[c->fc->nb_streams-1];
1601 sc = st->priv_data;
1602
b7effd4e
AK
1603 avio_r8(pb); /* version */
1604 avio_rb24(pb); /* flags */
1605 entries = avio_rb32(pb);
0d8f0abf 1606
5a7ba586
LB
1607 av_dlog(c->fc, "track[%i].stts.entries = %i\n",
1608 c->fc->nb_streams-1, entries);
0d8f0abf 1609
6d23d197
AC
1610 if (!entries)
1611 return 0;
1612 if (entries >= UINT_MAX / sizeof(*sc->stts_data))
30c3d976 1613 return AVERROR(EINVAL);
5a7ba586 1614
c3e92a6c 1615 sc->stts_data = av_malloc(entries * sizeof(*sc->stts_data));
c1da59fa 1616 if (!sc->stts_data)
0d8f0abf 1617 return AVERROR(ENOMEM);
5a7ba586 1618
0d8f0abf 1619 sc->stts_count = entries;
cd7352d5 1620
5a7ba586 1621 for (i=0; i<entries; i++) {
cd461d48
MN
1622 int sample_duration;
1623 int sample_count;
0147f198 1624
b7effd4e
AK
1625 sample_count=avio_rb32(pb);
1626 sample_duration = avio_rb32(pb);
cd7352d5
MN
1627 sc->stts_data[i].count= sample_count;
1628 sc->stts_data[i].duration= sample_duration;
1629
5a7ba586
LB
1630 av_dlog(c->fc, "sample_count=%d, sample_duration=%d\n",
1631 sample_count, sample_duration);
4e5ef14f 1632
7e815047 1633 duration+=(int64_t)sample_duration*sample_count;
891f64b3 1634 total_sample_count+=sample_count;
891f64b3 1635 }
1636
961e0ccd 1637 st->nb_frames= total_sample_count;
5a7ba586 1638 if (duration)
961e0ccd 1639 st->duration= duration;
0147f198
FR
1640 return 0;
1641}
1642
ae628ec1 1643static int mov_read_ctts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
c4ac052b 1644{
6a63ff19
BC
1645 AVStream *st;
1646 MOVStreamContext *sc;
c4ac052b
MN
1647 unsigned int i, entries;
1648
6a63ff19
BC
1649 if (c->fc->nb_streams < 1)
1650 return 0;
1651 st = c->fc->streams[c->fc->nb_streams-1];
1652 sc = st->priv_data;
1653
b7effd4e
AK
1654 avio_r8(pb); /* version */
1655 avio_rb24(pb); /* flags */
1656 entries = avio_rb32(pb);
0d8f0abf 1657
dfd2a005 1658 av_dlog(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
0d8f0abf 1659
52401b82
AC
1660 if (!entries)
1661 return 0;
5a7ba586 1662 if (entries >= UINT_MAX / sizeof(*sc->ctts_data))
bcd5d979 1663 return AVERROR_INVALIDDATA;
c3e92a6c 1664 sc->ctts_data = av_malloc(entries * sizeof(*sc->ctts_data));
c1da59fa 1665 if (!sc->ctts_data)
0d8f0abf
BC
1666 return AVERROR(ENOMEM);
1667 sc->ctts_count = entries;
4e5ef14f 1668
5a7ba586 1669 for (i=0; i<entries; i++) {
b7effd4e
AK
1670 int count =avio_rb32(pb);
1671 int duration =avio_rb32(pb);
70a61ed4
MN
1672
1673 sc->ctts_data[i].count = count;
1674 sc->ctts_data[i].duration= duration;
e7452721
BC
1675 if (duration < 0)
1676 sc->dts_shift = FFMAX(sc->dts_shift, -duration);
c4ac052b 1677 }
e7452721 1678
dfd2a005 1679 av_dlog(c->fc, "dts shift %d\n", sc->dts_shift);
e7452721 1680
c4ac052b
MN
1681 return 0;
1682}
1683
1e77810d
BC
1684static void mov_build_index(MOVContext *mov, AVStream *st)
1685{
1686 MOVStreamContext *sc = st->priv_data;
bc5c918e 1687 int64_t current_offset;
1e77810d
BC
1688 int64_t current_dts = 0;
1689 unsigned int stts_index = 0;
1690 unsigned int stsc_index = 0;
1691 unsigned int stss_index = 0;
171a3531 1692 unsigned int stps_index = 0;
1e77810d 1693 unsigned int i, j;
c5898e86 1694 uint64_t stream_size = 0;
1e77810d 1695
baf2ffd3 1696 /* adjust first dts according to edit list */
c3024f9e 1697 if (sc->time_offset && mov->time_scale > 0) {
f33a6a22
YN
1698 if (sc->time_offset < 0)
1699 sc->time_offset = av_rescale(sc->time_offset, sc->time_scale, mov->time_scale);
1700 current_dts = -sc->time_offset;
69e7ad8d 1701 if (sc->ctts_data && sc->stts_data && sc->stts_data[0].duration &&
4af7166f 1702 sc->ctts_data[0].duration / sc->stts_data[0].duration > 16) {
f03a081d
BC
1703 /* more than 16 frames delay, dts are likely wrong
1704 this happens with files created by iMovie */
1705 sc->wrong_dts = 1;
1706 st->codec->has_b_frames = 1;
1707 }
baf2ffd3
BC
1708 }
1709
d3bc61ac 1710 /* only use old uncompressed audio chunk demuxing when stts specifies it */
72415b2a 1711 if (!(st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
d3bc61ac 1712 sc->stts_count == 1 && sc->stts_data[0].duration == 1)) {
1e77810d
BC
1713 unsigned int current_sample = 0;
1714 unsigned int stts_sample = 0;
171a3531 1715 unsigned int sample_size;
1e77810d
BC
1716 unsigned int distance = 0;
1717 int key_off = sc->keyframes && sc->keyframes[0] == 1;
1718
4b29ed39
BC
1719 current_dts -= sc->dts_shift;
1720
52401b82
AC
1721 if (!sc->sample_count)
1722 return;
987e857f
BC
1723 if (sc->sample_count >= UINT_MAX / sizeof(*st->index_entries))
1724 return;
1725 st->index_entries = av_malloc(sc->sample_count*sizeof(*st->index_entries));
1726 if (!st->index_entries)
1727 return;
1728 st->index_entries_allocated_size = sc->sample_count*sizeof(*st->index_entries);
1729
1e77810d
BC
1730 for (i = 0; i < sc->chunk_count; i++) {
1731 current_offset = sc->chunk_offsets[i];
9dd94f83 1732 while (stsc_index + 1 < sc->stsc_count &&
04e06cfa 1733 i + 1 == sc->stsc_data[stsc_index + 1].first)
1e77810d 1734 stsc_index++;
04e06cfa 1735 for (j = 0; j < sc->stsc_data[stsc_index].count; j++) {
171a3531 1736 int keyframe = 0;
1e77810d
BC
1737 if (current_sample >= sc->sample_count) {
1738 av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
f0f2218d 1739 return;
1e77810d 1740 }
171a3531
BC
1741
1742 if (!sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index]) {
1743 keyframe = 1;
1e77810d
BC
1744 if (stss_index + 1 < sc->keyframe_count)
1745 stss_index++;
171a3531
BC
1746 } else if (sc->stps_count && current_sample+key_off == sc->stps_data[stps_index]) {
1747 keyframe = 1;
1748 if (stps_index + 1 < sc->stps_count)
1749 stps_index++;
1e77810d 1750 }
171a3531
BC
1751 if (keyframe)
1752 distance = 0;
1e77810d 1753 sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
5a7ba586 1754 if (sc->pseudo_stream_id == -1 ||
04e06cfa 1755 sc->stsc_data[stsc_index].id - 1 == sc->pseudo_stream_id) {
987e857f
BC
1756 AVIndexEntry *e = &st->index_entries[st->nb_index_entries++];
1757 e->pos = current_offset;
1758 e->timestamp = current_dts;
1759 e->size = sample_size;
1760 e->min_distance = distance;
1761 e->flags = keyframe ? AVINDEX_KEYFRAME : 0;
dfd2a005 1762 av_dlog(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
585dac65
BC
1763 "size %d, distance %d, keyframe %d\n", st->index, current_sample,
1764 current_offset, current_dts, sample_size, distance, keyframe);
1765 }
6c00a9de 1766
1e77810d 1767 current_offset += sample_size;
c5898e86 1768 stream_size += sample_size;
bbe46bc4 1769 current_dts += sc->stts_data[stts_index].duration;
1e77810d
BC
1770 distance++;
1771 stts_sample++;
1772 current_sample++;
1773 if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
1774 stts_sample = 0;
1775 stts_index++;
1776 }
1777 }
1778 }
fedb1eca
BC
1779 if (st->duration > 0)
1780 st->codec->bit_rate = stream_size*8*sc->time_scale/st->duration;
7e69621f 1781 } else {
987e857f 1782 unsigned chunk_samples, total = 0;
7e69621f 1783
987e857f
BC
1784 // compute total chunk count
1785 for (i = 0; i < sc->stsc_count; i++) {
1786 unsigned count, chunk_count;
7e69621f 1787
987e857f 1788 chunk_samples = sc->stsc_data[i].count;
7e69621f
BC
1789 if (sc->samples_per_frame && chunk_samples % sc->samples_per_frame) {
1790 av_log(mov->fc, AV_LOG_ERROR, "error unaligned chunk\n");
1791 return;
1792 }
1793
987e857f
BC
1794 if (sc->samples_per_frame >= 160) { // gsm
1795 count = chunk_samples / sc->samples_per_frame;
1796 } else if (sc->samples_per_frame > 1) {
1797 unsigned samples = (1024/sc->samples_per_frame)*sc->samples_per_frame;
1798 count = (chunk_samples+samples-1) / samples;
1799 } else {
1800 count = (chunk_samples+1023) / 1024;
1801 }
1802
1803 if (i < sc->stsc_count - 1)
1804 chunk_count = sc->stsc_data[i+1].first - sc->stsc_data[i].first;
1805 else
1806 chunk_count = sc->chunk_count - (sc->stsc_data[i].first - 1);
1807 total += chunk_count * count;
1808 }
1809
dfd2a005 1810 av_dlog(mov->fc, "chunk count %d\n", total);
987e857f
BC
1811 if (total >= UINT_MAX / sizeof(*st->index_entries))
1812 return;
1813 st->index_entries = av_malloc(total*sizeof(*st->index_entries));
1814 if (!st->index_entries)
1815 return;
1816 st->index_entries_allocated_size = total*sizeof(*st->index_entries);
1817
1818 // populate index
1819 for (i = 0; i < sc->chunk_count; i++) {
1820 current_offset = sc->chunk_offsets[i];
1821 if (stsc_index + 1 < sc->stsc_count &&
1822 i + 1 == sc->stsc_data[stsc_index + 1].first)
1823 stsc_index++;
1824 chunk_samples = sc->stsc_data[stsc_index].count;
1825
7e69621f 1826 while (chunk_samples > 0) {
987e857f 1827 AVIndexEntry *e;
7e69621f
BC
1828 unsigned size, samples;
1829
1830 if (sc->samples_per_frame >= 160) { // gsm
1831 samples = sc->samples_per_frame;
1832 size = sc->bytes_per_frame;
1833 } else {
1834 if (sc->samples_per_frame > 1) {
1835 samples = FFMIN((1024 / sc->samples_per_frame)*
1836 sc->samples_per_frame, chunk_samples);
1837 size = (samples / sc->samples_per_frame) * sc->bytes_per_frame;
1e77810d 1838 } else {
7e69621f
BC
1839 samples = FFMIN(1024, chunk_samples);
1840 size = samples * sc->sample_size;
1e77810d
BC
1841 }
1842 }
7e69621f 1843
987e857f
BC
1844 if (st->nb_index_entries >= total) {
1845 av_log(mov->fc, AV_LOG_ERROR, "wrong chunk count %d\n", total);
1846 return;
1847 }
1848 e = &st->index_entries[st->nb_index_entries++];
1849 e->pos = current_offset;
1850 e->timestamp = current_dts;
1851 e->size = size;
1852 e->min_distance = 0;
1853 e->flags = AVINDEX_KEYFRAME;
dfd2a005 1854 av_dlog(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", "
117a9190 1855 "size %d, duration %d\n", st->index, i, current_offset, current_dts,
7e69621f
BC
1856 size, samples);
1857
1858 current_offset += size;
bbe46bc4 1859 current_dts += samples;
7e69621f 1860 chunk_samples -= samples;
1e77810d
BC
1861 }
1862 }
1863 }
1e77810d 1864}
bd991df2 1865
9d77a8fa
MS
1866static int mov_open_dref(AVIOContext **pb, char *src, MOVDref *ref,
1867 AVIOInterruptCB *int_cb)
adeb9071 1868{
6a245905
MN
1869 /* try relative path, we do not try the absolute because it can leak information about our
1870 system to an attacker */
adeb9071
BC
1871 if (ref->nlvl_to > 0 && ref->nlvl_from > 0) {
1872 char filename[1024];
1873 char *src_path;
1874 int i, l;
1875
1876 /* find a source dir */
1877 src_path = strrchr(src, '/');
1878 if (src_path)
1879 src_path++;
1880 else
1881 src_path = src;
1882
1883 /* find a next level down to target */
1884 for (i = 0, l = strlen(ref->path) - 1; l >= 0; l--)
1885 if (ref->path[l] == '/') {
1886 if (i == ref->nlvl_to - 1)
1887 break;
1888 else
1889 i++;
1890 }
1891
1892 /* compose filename if next level down to target was found */
bbdf0d22 1893 if (i == ref->nlvl_to - 1 && src_path - src < sizeof(filename)) {
adeb9071
BC
1894 memcpy(filename, src, src_path - src);
1895 filename[src_path - src] = 0;
1896
1897 for (i = 1; i < ref->nlvl_from; i++)
1898 av_strlcat(filename, "../", 1024);
1899
1900 av_strlcat(filename, ref->path + l + 1, 1024);
1901
9d77a8fa 1902 if (!avio_open2(pb, filename, AVIO_FLAG_READ, int_cb, NULL))
adeb9071
BC
1903 return 0;
1904 }
1905 }
1906
1907 return AVERROR(ENOENT);
628b16f4 1908}
adeb9071 1909
ae628ec1 1910static int mov_read_trak(MOVContext *c, AVIOContext *pb, MOVAtom atom)
5ca1d879
ZK
1911{
1912 AVStream *st;
1913 MOVStreamContext *sc;
bd991df2 1914 int ret;
5ca1d879 1915
84ad31ff 1916 st = avformat_new_stream(c->fc, NULL);
3efe8848 1917 if (!st) return AVERROR(ENOMEM);
84ad31ff 1918 st->id = c->fc->nb_streams;
9a630c25 1919 sc = av_mallocz(sizeof(MOVStreamContext));
2922cbdb 1920 if (!sc) return AVERROR(ENOMEM);
5ca1d879 1921
5ca1d879 1922 st->priv_data = sc;
72415b2a 1923 st->codec->codec_type = AVMEDIA_TYPE_DATA;
64d50fa5 1924 sc->ffindex = st->index;
5ca1d879 1925
bd991df2
BC
1926 if ((ret = mov_read_default(c, pb, atom)) < 0)
1927 return ret;
1928
1929 /* sanity checks */
6c00a9de
BC
1930 if (sc->chunk_count && (!sc->stts_count || !sc->stsc_count ||
1931 (!sc->sample_size && !sc->sample_count))) {
6282c5f4
BC
1932 av_log(c->fc, AV_LOG_ERROR, "stream %d, missing mandatory atoms, broken header\n",
1933 st->index);
bd991df2
BC
1934 return 0;
1935 }
6c00a9de 1936
c3024f9e 1937 if (sc->time_scale <= 0) {
507330b9 1938 av_log(c->fc, AV_LOG_WARNING, "stream %d, timescale not set\n", st->index);
6c00a9de 1939 sc->time_scale = c->time_scale;
c3024f9e 1940 if (sc->time_scale <= 0)
507330b9
BC
1941 sc->time_scale = 1;
1942 }
6c00a9de 1943
c3f9ebf7 1944 avpriv_set_pts_info(st, 64, 1, sc->time_scale);
bd991df2 1945
72415b2a 1946 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
5b4f5e5d
BC
1947 !st->codec->frame_size && sc->stts_count == 1) {
1948 st->codec->frame_size = av_rescale(sc->stts_data[0].duration,
1949 st->codec->sample_rate, sc->time_scale);
dfd2a005 1950 av_dlog(c->fc, "frame size %d\n", st->codec->frame_size);
5b4f5e5d 1951 }
bd991df2 1952
bd991df2
BC
1953 mov_build_index(c, st);
1954
1955 if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) {
adeb9071 1956 MOVDref *dref = &sc->drefs[sc->dref_id - 1];
9d77a8fa 1957 if (mov_open_dref(&sc->pb, c->fc->filename, dref, &c->fc->interrupt_callback) < 0)
adeb9071
BC
1958 av_log(c->fc, AV_LOG_ERROR,
1959 "stream %d, error opening alias: path='%s', dir='%s', "
1960 "filename='%s', volume='%s', nlvl_from=%d, nlvl_to=%d\n",
1961 st->index, dref->path, dref->dir, dref->filename,
1962 dref->volume, dref->nlvl_from, dref->nlvl_to);
bd991df2
BC
1963 } else
1964 sc->pb = c->fc->pb;
1965
72415b2a 1966 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
525fcb27
AW
1967 if (!st->sample_aspect_ratio.num &&
1968 (st->codec->width != sc->width || st->codec->height != sc->height)) {
1969 st->sample_aspect_ratio = av_d2q(((double)st->codec->height * sc->width) /
1970 ((double)st->codec->width * sc->height), INT_MAX);
c3aeaa54
BC
1971 }
1972
1973 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
1974 sc->time_scale*st->nb_frames, st->duration, INT_MAX);
f6253caf
BC
1975
1976 if (sc->stts_count == 1 || (sc->stts_count == 2 && sc->stts_data[1].count == 1))
1977 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den,
1978 sc->time_scale, sc->stts_data[0].duration, INT_MAX);
c9566115
BC
1979 }
1980
bd991df2 1981 switch (st->codec->codec_id) {
b250f9c6 1982#if CONFIG_H261_DECODER
bd991df2
BC
1983 case CODEC_ID_H261:
1984#endif
b250f9c6 1985#if CONFIG_H263_DECODER
bd991df2
BC
1986 case CODEC_ID_H263:
1987#endif
a0dd3c00
BC
1988#if CONFIG_H264_DECODER
1989 case CODEC_ID_H264:
1990#endif
b250f9c6 1991#if CONFIG_MPEG4_DECODER
bd991df2
BC
1992 case CODEC_ID_MPEG4:
1993#endif
6c00a9de 1994 st->codec->width = 0; /* let decoder init width/height */
bd991df2
BC
1995 st->codec->height= 0;
1996 break;
bd991df2 1997 }
f9900374
BC
1998
1999 /* Do not need those anymore. */
2000 av_freep(&sc->chunk_offsets);
04e06cfa 2001 av_freep(&sc->stsc_data);
f9900374
BC
2002 av_freep(&sc->sample_sizes);
2003 av_freep(&sc->keyframes);
2004 av_freep(&sc->stts_data);
171a3531 2005 av_freep(&sc->stps_data);
f9900374 2006
bd991df2 2007 return 0;
5ca1d879
ZK
2008}
2009
ae628ec1 2010static int mov_read_ilst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
51c15201
BC
2011{
2012 int ret;
2013 c->itunes_metadata = 1;
2014 ret = mov_read_default(c, pb, atom);
2015 c->itunes_metadata = 0;
2016 return ret;
2017}
2018
ae628ec1 2019static int mov_read_meta(MOVContext *c, AVIOContext *pb, MOVAtom atom)
51c15201 2020{
df8843c6 2021 while (atom.size > 8) {
b7effd4e 2022 uint32_t tag = avio_rl32(pb);
df8843c6
BC
2023 atom.size -= 4;
2024 if (tag == MKTAG('h','d','l','r')) {
6b4aa5da 2025 avio_seek(pb, -8, SEEK_CUR);
df8843c6
BC
2026 atom.size += 8;
2027 return mov_read_default(c, pb, atom);
2028 }
2029 }
2030 return 0;
51c15201
BC
2031}
2032
ae628ec1 2033static int mov_read_tkhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
5ca1d879 2034{
ec072669
JS
2035 int i;
2036 int width;
2037 int height;
2038 int64_t disp_transform[2];
2039 int display_matrix[3][2];
6a63ff19
BC
2040 AVStream *st;
2041 MOVStreamContext *sc;
2042 int version;
2043
2044 if (c->fc->nb_streams < 1)
2045 return 0;
2046 st = c->fc->streams[c->fc->nb_streams-1];
2047 sc = st->priv_data;
5ca1d879 2048
b7effd4e
AK
2049 version = avio_r8(pb);
2050 avio_rb24(pb); /* flags */
5ca1d879
ZK
2051 /*
2052 MOV_TRACK_ENABLED 0x0001
2053 MOV_TRACK_IN_MOVIE 0x0002
2054 MOV_TRACK_IN_PREVIEW 0x0004
2055 MOV_TRACK_IN_POSTER 0x0008
2056 */
2057
1175561e 2058 if (version == 1) {
b7effd4e
AK
2059 avio_rb64(pb);
2060 avio_rb64(pb);
1175561e 2061 } else {
b7effd4e
AK
2062 avio_rb32(pb); /* creation time */
2063 avio_rb32(pb); /* modification time */
1175561e 2064 }
b7effd4e
AK
2065 st->id = (int)avio_rb32(pb); /* track id (NOT 0 !)*/
2066 avio_rb32(pb); /* reserved */
fcdd622c 2067
117a9190 2068 /* highlevel (considering edits) duration in movie timebase */
b7effd4e
AK
2069 (version == 1) ? avio_rb64(pb) : avio_rb32(pb);
2070 avio_rb32(pb); /* reserved */
2071 avio_rb32(pb); /* reserved */
5ca1d879 2072
b7effd4e
AK
2073 avio_rb16(pb); /* layer */
2074 avio_rb16(pb); /* alternate group */
2075 avio_rb16(pb); /* volume */
2076 avio_rb16(pb); /* reserved */
5ca1d879 2077
ec072669
JS
2078 //read in the display matrix (outlined in ISO 14496-12, Section 6.2.2)
2079 // they're kept in fixed point format through all calculations
2080 // ignore u,v,z b/c we don't need the scale factor to calc aspect ratio
2081 for (i = 0; i < 3; i++) {
b7effd4e
AK
2082 display_matrix[i][0] = avio_rb32(pb); // 16.16 fixed point
2083 display_matrix[i][1] = avio_rb32(pb); // 16.16 fixed point
2084 avio_rb32(pb); // 2.30 fixed point (not used)
ec072669 2085 }
5ca1d879 2086
b7effd4e
AK
2087 width = avio_rb32(pb); // 16.16 fixed point track width
2088 height = avio_rb32(pb); // 16.16 fixed point track height
6cdbff63
DC
2089 sc->width = width >> 16;
2090 sc->height = height >> 16;
ec072669 2091
d862fce7 2092 // transform the display width/height according to the matrix
ec072669 2093 // skip this if the display matrix is the default identity matrix
d862fce7 2094 // or if it is rotating the picture, ex iPhone 3GS
ec072669
JS
2095 // to keep the same scale, use [width height 1<<16]
2096 if (width && height &&
d862fce7
BC
2097 ((display_matrix[0][0] != 65536 ||
2098 display_matrix[1][1] != 65536) &&
2099 !display_matrix[0][1] &&
2100 !display_matrix[1][0] &&
2101 !display_matrix[2][0] && !display_matrix[2][1])) {
ec072669
JS
2102 for (i = 0; i < 2; i++)
2103 disp_transform[i] =
2104 (int64_t) width * display_matrix[0][i] +
2105 (int64_t) height * display_matrix[1][i] +
2106 ((int64_t) display_matrix[2][i] << 16);
2107
2108 //sample aspect ratio is new width/height divided by old width/height
59729451 2109 st->sample_aspect_ratio = av_d2q(
ec072669
JS
2110 ((double) disp_transform[0] * height) /
2111 ((double) disp_transform[1] * width), INT_MAX);
2112 }
5ca1d879
ZK
2113 return 0;
2114}
2115
ae628ec1 2116static int mov_read_tfhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
61aedb0f
BC
2117{
2118 MOVFragment *frag = &c->fragment;
2119 MOVTrackExt *trex = NULL;
2120 int flags, track_id, i;
2121
b7effd4e
AK
2122 avio_r8(pb); /* version */
2123 flags = avio_rb24(pb);
61aedb0f 2124
b7effd4e 2125 track_id = avio_rb32(pb);
63581eb1 2126 if (!track_id)
bcd5d979 2127 return AVERROR_INVALIDDATA;
61aedb0f
BC
2128 frag->track_id = track_id;
2129 for (i = 0; i < c->trex_count; i++)
2130 if (c->trex_data[i].track_id == frag->track_id) {
2131 trex = &c->trex_data[i];
2132 break;
2133 }
2134 if (!trex) {
2135 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding trex\n");
bcd5d979 2136 return AVERROR_INVALIDDATA;
61aedb0f
BC
2137 }
2138
b7effd4e 2139 if (flags & 0x01) frag->base_data_offset = avio_rb64(pb);
61aedb0f 2140 else frag->base_data_offset = frag->moof_offset;
b7effd4e 2141 if (flags & 0x02) frag->stsd_id = avio_rb32(pb);
61aedb0f
BC
2142 else frag->stsd_id = trex->stsd_id;
2143
b7effd4e
AK
2144 frag->duration = flags & 0x08 ? avio_rb32(pb) : trex->duration;
2145 frag->size = flags & 0x10 ? avio_rb32(pb) : trex->size;
2146 frag->flags = flags & 0x20 ? avio_rb32(pb) : trex->flags;
dfd2a005 2147 av_dlog(c->fc, "frag flags 0x%x\n", frag->flags);
61aedb0f
BC
2148 return 0;
2149}
2150
ae628ec1 2151static int mov_read_chap(MOVContext *c, AVIOContext *pb, MOVAtom atom)
7221579b 2152{
b7effd4e 2153 c->chapter_track = avio_rb32(pb);
7221579b
DC
2154 return 0;
2155}
2156
ae628ec1 2157static int mov_read_trex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
61aedb0f
BC
2158{
2159 MOVTrackExt *trex;
2160
2161 if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data))
bcd5d979 2162 return AVERROR_INVALIDDATA;
0d8f0abf
BC
2163 trex = av_realloc(c->trex_data, (c->trex_count+1)*sizeof(*c->trex_data));
2164 if (!trex)
61aedb0f 2165 return AVERROR(ENOMEM);
0d8f0abf 2166 c->trex_data = trex;
61aedb0f 2167 trex = &c->trex_data[c->trex_count++];
b7effd4e
AK
2168 avio_r8(pb); /* version */
2169 avio_rb24(pb); /* flags */
2170 trex->track_id = avio_rb32(pb);
2171 trex->stsd_id = avio_rb32(pb);
2172 trex->duration = avio_rb32(pb);
2173 trex->size = avio_rb32(pb);
2174 trex->flags = avio_rb32(pb);
61aedb0f
BC
2175 return 0;
2176}
2177
ae628ec1 2178static int mov_read_trun(MOVContext *c, AVIOContext *pb, MOVAtom atom)
61aedb0f
BC
2179{
2180 MOVFragment *frag = &c->fragment;
63581eb1 2181 AVStream *st = NULL;
44e43aab 2182 MOVStreamContext *sc;
45a811b5 2183 MOVStts *ctts_data;
61aedb0f
BC
2184 uint64_t offset;
2185 int64_t dts;
2186 int data_offset = 0;
2187 unsigned entries, first_sample_flags = frag->flags;
2188 int flags, distance, i;
2189
63581eb1
AC
2190 for (i = 0; i < c->fc->nb_streams; i++) {
2191 if (c->fc->streams[i]->id == frag->track_id) {
2192 st = c->fc->streams[i];
2193 break;
2194 }
2195 }
2196 if (!st) {
2197 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id);
bcd5d979 2198 return AVERROR_INVALIDDATA;
63581eb1 2199 }
44e43aab 2200 sc = st->priv_data;
61aedb0f
BC
2201 if (sc->pseudo_stream_id+1 != frag->stsd_id)
2202 return 0;
b7effd4e
AK
2203 avio_r8(pb); /* version */
2204 flags = avio_rb24(pb);
2205 entries = avio_rb32(pb);
dfd2a005 2206 av_dlog(c->fc, "flags 0x%x entries %d\n", flags, entries);
45a811b5
YN
2207
2208 /* Always assume the presence of composition time offsets.
2209 * Without this assumption, for instance, we cannot deal with a track in fragmented movies that meet the following.
2210 * 1) in the initial movie, there are no samples.
2211 * 2) in the first movie fragment, there is only one sample without composition time offset.
2212 * 3) in the subsequent movie fragments, there are samples with composition time offset. */
2213 if (!sc->ctts_count && sc->sample_count)
2214 {
2215 /* Complement ctts table if moov atom doesn't have ctts atom. */
2216 ctts_data = av_malloc(sizeof(*sc->ctts_data));
0d8f0abf 2217 if (!ctts_data)
61aedb0f 2218 return AVERROR(ENOMEM);
0d8f0abf 2219 sc->ctts_data = ctts_data;
45a811b5
YN
2220 sc->ctts_data[sc->ctts_count].count = sc->sample_count;
2221 sc->ctts_data[sc->ctts_count].duration = 0;
2222 sc->ctts_count++;
61aedb0f 2223 }
45a811b5 2224 if ((uint64_t)entries+sc->ctts_count >= UINT_MAX/sizeof(*sc->ctts_data))
bcd5d979 2225 return AVERROR_INVALIDDATA;
45a811b5
YN
2226 ctts_data = av_realloc(sc->ctts_data,
2227 (entries+sc->ctts_count)*sizeof(*sc->ctts_data));
2228 if (!ctts_data)
2229 return AVERROR(ENOMEM);
2230 sc->ctts_data = ctts_data;
2231
2232 if (flags & 0x001) data_offset = avio_rb32(pb);
2233 if (flags & 0x004) first_sample_flags = avio_rb32(pb);
f33a6a22 2234 dts = st->duration - sc->time_offset;
61aedb0f
BC
2235 offset = frag->base_data_offset + data_offset;
2236 distance = 0;
dfd2a005 2237 av_dlog(c->fc, "first sample flags 0x%x\n", first_sample_flags);
61aedb0f
BC
2238 for (i = 0; i < entries; i++) {
2239 unsigned sample_size = frag->size;
2240 int sample_flags = i ? frag->flags : first_sample_flags;
2241 unsigned sample_duration = frag->duration;
2242 int keyframe;
2243
b7effd4e
AK
2244 if (flags & 0x100) sample_duration = avio_rb32(pb);
2245 if (flags & 0x200) sample_size = avio_rb32(pb);
2246 if (flags & 0x400) sample_flags = avio_rb32(pb);
45a811b5
YN
2247 sc->ctts_data[sc->ctts_count].count = 1;
2248 sc->ctts_data[sc->ctts_count].duration = (flags & 0x800) ? avio_rb32(pb) : 0;
2249 sc->ctts_count++;
72415b2a 2250 if ((keyframe = st->codec->codec_type == AVMEDIA_TYPE_AUDIO ||
61aedb0f
BC
2251 (flags & 0x004 && !i && !sample_flags) || sample_flags & 0x2000000))
2252 distance = 0;
2253 av_add_index_entry(st, offset, dts, sample_size, distance,
2254 keyframe ? AVINDEX_KEYFRAME : 0);
dfd2a005 2255 av_dlog(c->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
61aedb0f
BC
2256 "size %d, distance %d, keyframe %d\n", st->index, sc->sample_count+i,
2257 offset, dts, sample_size, distance, keyframe);
2258 distance++;
bbe46bc4 2259 dts += sample_duration;
61aedb0f
BC
2260 offset += sample_size;
2261 }
2262 frag->moof_offset = offset;
f33a6a22 2263 st->duration = dts + sc->time_offset;
61aedb0f
BC
2264 return 0;
2265}
2266
5ca1d879
ZK
2267/* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
2268/* like the files created with Adobe Premiere 5.0, for samples see */
2269/* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
ae628ec1 2270static int mov_read_wide(MOVContext *c, AVIOContext *pb, MOVAtom atom)
5ca1d879
ZK
2271{
2272 int err;
5ca1d879 2273
5ca1d879
ZK
2274 if (atom.size < 8)
2275 return 0; /* continue */
b7effd4e 2276 if (avio_rb32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
45a8a02a 2277 avio_skip(pb, atom.size - 4);
5ca1d879
ZK
2278 return 0;
2279 }
b7effd4e 2280 atom.type = avio_rl32(pb);
5ca1d879 2281 atom.size -= 8;
1c126b4f 2282 if (atom.type != MKTAG('m','d','a','t')) {
45a8a02a 2283 avio_skip(pb, atom.size);
5ca1d879
ZK
2284 return 0;
2285 }
2286 err = mov_read_mdat(c, pb, atom);
5ca1d879
ZK
2287 return err;
2288}
2289
ae628ec1 2290static int mov_read_cmov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
0147f198 2291{
b250f9c6 2292#if CONFIG_ZLIB
ae628ec1 2293 AVIOContext ctx;
b6a17df4
ZK
2294 uint8_t *cmov_data;
2295 uint8_t *moov_data; /* uncompressed data */
0147f198 2296 long cmov_len, moov_len;
6f04eb1e 2297 int ret = -1;
b6a17df4 2298
b7effd4e
AK
2299 avio_rb32(pb); /* dcom atom */
2300 if (avio_rl32(pb) != MKTAG('d','c','o','m'))
bcd5d979 2301 return AVERROR_INVALIDDATA;
b7effd4e 2302 if (avio_rl32(pb) != MKTAG('z','l','i','b')) {
f3592353 2303 av_log(c->fc, AV_LOG_ERROR, "unknown compression for cmov atom !");
bcd5d979 2304 return AVERROR_INVALIDDATA;
0147f198 2305 }
b7effd4e
AK
2306 avio_rb32(pb); /* cmvd atom */
2307 if (avio_rl32(pb) != MKTAG('c','m','v','d'))
bcd5d979 2308 return AVERROR_INVALIDDATA;
b7effd4e 2309 moov_len = avio_rb32(pb); /* uncompressed size */
5ca1d879 2310 cmov_len = atom.size - 6 * 4;
5cd62665 2311
9a630c25 2312 cmov_data = av_malloc(cmov_len);
0147f198 2313 if (!cmov_data)
0d8f0abf 2314 return AVERROR(ENOMEM);
9a630c25 2315 moov_data = av_malloc(moov_len);
0147f198
FR
2316 if (!moov_data) {
2317 av_free(cmov_data);
0d8f0abf 2318 return AVERROR(ENOMEM);
0147f198 2319 }
b7effd4e 2320 avio_read(pb, cmov_data, cmov_len);
5a7ba586 2321 if (uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
6f04eb1e 2322 goto free_and_return;
5a7ba586 2323 if (ffio_init_context(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
6f04eb1e 2324 goto free_and_return;
1c126b4f 2325 atom.type = MKTAG('m','o','o','v');
5ca1d879
ZK
2326 atom.size = moov_len;
2327 ret = mov_read_default(c, &ctx, atom);
6f04eb1e 2328free_and_return:
0147f198
FR
2329 av_free(moov_data);
2330 av_free(cmov_data);
2331 return ret;
d966b2f0
BC
2332#else
2333 av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
bcd5d979 2334 return AVERROR(ENOSYS);
0147f198 2335#endif
d966b2f0 2336}
0147f198 2337
baf25c9d 2338/* edit list atom */
ae628ec1 2339static int mov_read_elst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
baf25c9d 2340{
1c4bf2ec 2341 MOVStreamContext *sc;
5f0bb0ba 2342 int i, edit_count, version;
e0977c80 2343
1c4bf2ec
BC
2344 if (c->fc->nb_streams < 1)
2345 return 0;
2346 sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
2347
5f0bb0ba 2348 version = avio_r8(pb); /* version */
b7effd4e
AK
2349 avio_rb24(pb); /* flags */
2350 edit_count = avio_rb32(pb); /* entries */
e0977c80 2351
5a7ba586 2352 if ((uint64_t)edit_count*12+8 > atom.size)
bcd5d979 2353 return AVERROR_INVALIDDATA;
53e099de 2354
5a7ba586 2355 for (i=0; i<edit_count; i++){
5f0bb0ba
YN
2356 int64_t time;
2357 int64_t duration;
2358 if (version == 1) {
2359 duration = avio_rb64(pb);
2360 time = avio_rb64(pb);
2361 } else {
2362 duration = avio_rb32(pb); /* segment duration */
ae88e9cf 2363 time = (int32_t)avio_rb32(pb); /* media time */
5f0bb0ba 2364 }
b7effd4e 2365 avio_rb32(pb); /* Media rate */
2ac736a6
RD
2366 if (i == 0 && time >= -1) {
2367 sc->time_offset = time != -1 ? time : -duration;
a5929abe 2368 }
e0977c80 2369 }
baf2ffd3 2370
5a7ba586 2371 if (edit_count > 1)
baf2ffd3
BC
2372 av_log(c->fc, AV_LOG_WARNING, "multiple edit list entries, "
2373 "a/v desync might occur, patch welcome\n");
2374
dfd2a005 2375 av_dlog(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, edit_count);
e0977c80 2376 return 0;
baf25c9d
GC
2377}
2378
6cea494e 2379static const MOVParseTableEntry mov_default_parse_table[] = {
d4fdba0d 2380{ MKTAG('a','v','s','s'), mov_read_extradata },
1cf9f6ed 2381{ MKTAG('c','h','p','l'), mov_read_chpl },
1c126b4f
BC
2382{ MKTAG('c','o','6','4'), mov_read_stco },
2383{ MKTAG('c','t','t','s'), mov_read_ctts }, /* composition time to sample */
2384{ MKTAG('d','i','n','f'), mov_read_default },
2385{ MKTAG('d','r','e','f'), mov_read_dref },
2386{ MKTAG('e','d','t','s'), mov_read_default },
2387{ MKTAG('e','l','s','t'), mov_read_elst },
2388{ MKTAG('e','n','d','a'), mov_read_enda },
4bf3c8f2 2389{ MKTAG('f','i','e','l'), mov_read_fiel },
1c126b4f
BC
2390{ MKTAG('f','t','y','p'), mov_read_ftyp },
2391{ MKTAG('g','l','b','l'), mov_read_glbl },
2392{ MKTAG('h','d','l','r'), mov_read_hdlr },
51c15201 2393{ MKTAG('i','l','s','t'), mov_read_ilst },
1c126b4f
BC
2394{ MKTAG('j','p','2','h'), mov_read_extradata },
2395{ MKTAG('m','d','a','t'), mov_read_mdat },
2396{ MKTAG('m','d','h','d'), mov_read_mdhd },
2397{ MKTAG('m','d','i','a'), mov_read_default },
51c15201 2398{ MKTAG('m','e','t','a'), mov_read_meta },
1c126b4f
BC
2399{ MKTAG('m','i','n','f'), mov_read_default },
2400{ MKTAG('m','o','o','f'), mov_read_moof },
2401{ MKTAG('m','o','o','v'), mov_read_moov },
2402{ MKTAG('m','v','e','x'), mov_read_default },
2403{ MKTAG('m','v','h','d'), mov_read_mvhd },
2404{ MKTAG('S','M','I',' '), mov_read_smi }, /* Sorenson extension ??? */
2405{ MKTAG('a','l','a','c'), mov_read_extradata }, /* alac specific atom */
2406{ MKTAG('a','v','c','C'), mov_read_glbl },
6da54074 2407{ MKTAG('p','a','s','p'), mov_read_pasp },
1c126b4f
BC
2408{ MKTAG('s','t','b','l'), mov_read_default },
2409{ MKTAG('s','t','c','o'), mov_read_stco },
171a3531 2410{ MKTAG('s','t','p','s'), mov_read_stps },
653d7aeb 2411{ MKTAG('s','t','r','f'), mov_read_strf },
1c126b4f
BC
2412{ MKTAG('s','t','s','c'), mov_read_stsc },
2413{ MKTAG('s','t','s','d'), mov_read_stsd }, /* sample description */
2414{ MKTAG('s','t','s','s'), mov_read_stss }, /* sync sample */
2415{ MKTAG('s','t','s','z'), mov_read_stsz }, /* sample size */
2416{ MKTAG('s','t','t','s'), mov_read_stts },
bd27eed6 2417{ MKTAG('s','t','z','2'), mov_read_stsz }, /* compact sample size */
1c126b4f
BC
2418{ MKTAG('t','k','h','d'), mov_read_tkhd }, /* track header */
2419{ MKTAG('t','f','h','d'), mov_read_tfhd }, /* track fragment header */
2420{ MKTAG('t','r','a','k'), mov_read_trak },
2421{ MKTAG('t','r','a','f'), mov_read_default },
7221579b
DC
2422{ MKTAG('t','r','e','f'), mov_read_default },
2423{ MKTAG('c','h','a','p'), mov_read_chap },
1c126b4f
BC
2424{ MKTAG('t','r','e','x'), mov_read_trex },
2425{ MKTAG('t','r','u','n'), mov_read_trun },
86b0affd 2426{ MKTAG('u','d','t','a'), mov_read_default },
1c126b4f
BC
2427{ MKTAG('w','a','v','e'), mov_read_wave },
2428{ MKTAG('e','s','d','s'), mov_read_esds },
bdecdd2b 2429{ MKTAG('d','a','c','3'), mov_read_dac3 }, /* AC-3 info */
1c126b4f 2430{ MKTAG('w','i','d','e'), mov_read_wide }, /* place holder */
85e9e3a9 2431{ MKTAG('w','f','e','x'), mov_read_wfex },
1c126b4f 2432{ MKTAG('c','m','o','v'), mov_read_cmov },
1fdf18f4 2433{ MKTAG('c','h','a','n'), mov_read_chan }, /* channel layout */
bcfe2ba0 2434{ 0, NULL }
6cea494e
ZK
2435};
2436
c9a65ca8
FB
2437static int mov_probe(AVProbeData *p)
2438{
0e7eed09
FB
2439 unsigned int offset;
2440 uint32_t tag;
2497479f 2441 int score = 0;
3ffe3793 2442
c9a65ca8 2443 /* check file header */
0e7eed09 2444 offset = 0;
5a7ba586 2445 for (;;) {
0e7eed09
FB
2446 /* ignore invalid offset */
2447 if ((offset + 8) > (unsigned int)p->buf_size)
2497479f 2448 return score;
fead30d4 2449 tag = AV_RL32(p->buf + offset + 4);
0e7eed09 2450 switch(tag) {
2497479f 2451 /* check for obvious tags */
1c126b4f
BC
2452 case MKTAG('j','P',' ',' '): /* jpeg 2000 signature */
2453 case MKTAG('m','o','o','v'):
2454 case MKTAG('m','d','a','t'):
2455 case MKTAG('p','n','o','t'): /* detect movs with preview pics like ew.mov and april.mov */
2456 case MKTAG('u','d','t','a'): /* Packet Video PVAuthor adds this and a lot of more junk */
40e7aaa3 2457 case MKTAG('f','t','y','p'):
3ffe3793 2458 return AVPROBE_SCORE_MAX;
2497479f 2459 /* those are more common words, so rate then a bit less */
1c126b4f
BC
2460 case MKTAG('e','d','i','w'): /* xdcam files have reverted first tags */
2461 case MKTAG('w','i','d','e'):
2462 case MKTAG('f','r','e','e'):
2463 case MKTAG('j','u','n','k'):
2464 case MKTAG('p','i','c','t'):
2497479f 2465 return AVPROBE_SCORE_MAX - 5;
5469b788 2466 case MKTAG(0x82,0x82,0x7f,0x7d):
1c126b4f
BC
2467 case MKTAG('s','k','i','p'):
2468 case MKTAG('u','u','i','d'):
2469 case MKTAG('p','r','f','l'):
fead30d4 2470 offset = AV_RB32(p->buf+offset) + offset;
2497479f
FR
2471 /* if we only find those cause probedata is too small at least rate them */
2472 score = AVPROBE_SCORE_MAX - 50;
0e7eed09
FB
2473 break;
2474 default:
2475 /* unrecognized tag */
2497479f 2476 return score;
0e7eed09 2477 }
3ffe3793 2478 }
c9a65ca8
FB
2479}
2480
7221579b
DC
2481// must be done after parsing all trak because there's no order requirement
2482static void mov_read_chapters(AVFormatContext *s)
2483{
2484 MOVContext *mov = s->priv_data;
2485 AVStream *st = NULL;
2486 MOVStreamContext *sc;
2487 int64_t cur_pos;
225b6d7f 2488 int i;
7221579b
DC
2489
2490 for (i = 0; i < s->nb_streams; i++)
2491 if (s->streams[i]->id == mov->chapter_track) {
2492 st = s->streams[i];
2493 break;
2494 }
2495 if (!st) {
2496 av_log(s, AV_LOG_ERROR, "Referenced QT chapter track not found\n");
2497 return;
2498 }
2499
2500 st->discard = AVDISCARD_ALL;
2501 sc = st->priv_data;
a2704c97 2502 cur_pos = avio_tell(sc->pb);
7221579b
DC
2503
2504 for (i = 0; i < st->nb_index_entries; i++) {
2505 AVIndexEntry *sample = &st->index_entries[i];
2506 int64_t end = i+1 < st->nb_index_entries ? st->index_entries[i+1].timestamp : st->duration;
225b6d7f
AK
2507 uint8_t *title;
2508 uint16_t ch;
2509 int len, title_len;
7221579b 2510
6b4aa5da 2511 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
7221579b
DC
2512 av_log(s, AV_LOG_ERROR, "Chapter %d not found in file\n", i);
2513 goto finish;
2514 }
2515
7221579b 2516 // the first two bytes are the length of the title
b7effd4e 2517 len = avio_rb16(sc->pb);
7221579b
DC
2518 if (len > sample->size-2)
2519 continue;
225b6d7f
AK
2520 title_len = 2*len + 1;
2521 if (!(title = av_mallocz(title_len)))
2522 goto finish;
7221579b
DC
2523
2524 // The samples could theoretically be in any encoding if there's an encd
2525 // atom following, but in practice are only utf-8 or utf-16, distinguished
2526 // instead by the presence of a BOM
8fb22c3d
AC
2527 if (!len) {
2528 title[0] = 0;
2529 } else {
2530 ch = avio_rb16(sc->pb);
2531 if (ch == 0xfeff)
2532 avio_get_str16be(sc->pb, len, title, title_len);
2533 else if (ch == 0xfffe)
2534 avio_get_str16le(sc->pb, len, title, title_len);
2535 else {
2536 AV_WB16(title, ch);
2537 if (len == 1 || len == 2)
7ad06beb 2538 title[len] = 0;
8fb22c3d
AC
2539 else
2540 avio_get_str(sc->pb, len - 2, title + 2, title_len - 2);
2541 }
7221579b
DC
2542 }
2543
1fa395e4 2544 avpriv_new_chapter(s, i, st->time_base, sample->timestamp, end, title);
c4f8765a 2545 av_freep(&title);
7221579b
DC
2546 }
2547finish:
6b4aa5da 2548 avio_seek(sc->pb, cur_pos, SEEK_SET);
7221579b
DC
2549}
2550
a266644f 2551static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
6cea494e 2552{
e4141433 2553 MOVContext *mov = s->priv_data;
ae628ec1 2554 AVIOContext *pb = s->pb;
f9900374 2555 int err;
3491866a 2556 MOVAtom atom = { AV_RL32("root") };
6cea494e 2557
6cea494e 2558 mov->fc = s;
117a9190 2559 /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
5a7ba586 2560 if (pb->seekable)
76aa876e 2561 atom.size = avio_size(pb);
6cea494e 2562 else
fa22ca22 2563 atom.size = INT64_MAX;
6cea494e 2564
6cea494e 2565 /* check MOV header */
612b5cbb
BC
2566 if ((err = mov_read_default(mov, pb, atom)) < 0) {
2567 av_log(s, AV_LOG_ERROR, "error reading header: %d\n", err);
2568 return err;
2569 }
2570 if (!mov->found_moov) {
2571 av_log(s, AV_LOG_ERROR, "moov atom not found\n");
bcd5d979 2572 return AVERROR_INVALIDDATA;
6cea494e 2573 }
3583d7cf 2574 av_dlog(mov->fc, "on_parse_exit_offset=%"PRId64"\n", avio_tell(pb));
4e5ef14f 2575
8978feda 2576 if (pb->seekable && mov->chapter_track > 0)
7221579b
DC
2577 mov_read_chapters(s);
2578
6cea494e
ZK
2579 return 0;
2580}
2581
5dc5c43b 2582static AVIndexEntry *mov_find_next_sample(AVFormatContext *s, AVStream **st)
6cea494e 2583{
5dc5c43b 2584 AVIndexEntry *sample = NULL;
86d8602f 2585 int64_t best_dts = INT64_MAX;
5dc5c43b 2586 int i;
11f16b66 2587 for (i = 0; i < s->nb_streams; i++) {
69fc436c
RD
2588 AVStream *avst = s->streams[i];
2589 MOVStreamContext *msc = avst->priv_data;
3fe4d5d4 2590 if (msc->pb && msc->current_sample < avst->nb_index_entries) {
69fc436c 2591 AVIndexEntry *current_sample = &avst->index_entries[msc->current_sample];
bbe46bc4 2592 int64_t dts = av_rescale(current_sample->timestamp, AV_TIME_BASE, msc->time_scale);
dfd2a005 2593 av_dlog(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
8978feda
AK
2594 if (!sample || (!s->pb->seekable && current_sample->pos < sample->pos) ||
2595 (s->pb->seekable &&
221e21b7 2596 ((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb &&
687f35f3 2597 ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
221e21b7 2598 (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) {
b72708f8
BC
2599 sample = current_sample;
2600 best_dts = dts;
5dc5c43b 2601 *st = avst;
86d8602f 2602 }
6cea494e 2603 }
6cea494e 2604 }
5dc5c43b
RD
2605 return sample;
2606}
2607
2608static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
2609{
2610 MOVContext *mov = s->priv_data;
2611 MOVStreamContext *sc;
2612 AVIndexEntry *sample;
2613 AVStream *st = NULL;
2614 int ret;
2615 retry:
2616 sample = mov_find_next_sample(s, &st);
433aeb62
BC
2617 if (!sample) {
2618 mov->found_mdat = 0;
8978feda 2619 if (s->pb->seekable||
3491866a 2620 mov_read_default(mov, s->pb, (MOVAtom){ AV_RL32("root"), INT64_MAX }) < 0 ||
66e5b1df 2621 s->pb->eof_reached)
350f2c2c 2622 return AVERROR_EOF;
3583d7cf 2623 av_dlog(s, "read fragments, offset 0x%"PRIx64"\n", avio_tell(s->pb));
433aeb62
BC
2624 goto retry;
2625 }
69fc436c 2626 sc = st->priv_data;
b72708f8
BC
2627 /* must be done just before reading, to avoid infinite loop on sample */
2628 sc->current_sample++;
3fe4d5d4
RD
2629
2630 if (st->discard != AVDISCARD_ALL) {
6b4aa5da 2631 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
e1c1b0ff
RD
2632 av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
2633 sc->ffindex, sample->pos);
bcd5d979 2634 return AVERROR_INVALIDDATA;
e1c1b0ff
RD
2635 }
2636 ret = av_get_packet(sc->pb, pkt, sample->size);
a2f38511
RD
2637 if (ret < 0)
2638 return ret;
2d8591c2
KS
2639 if (sc->has_palette) {
2640 uint8_t *pal;
2641
2642 pal = av_packet_new_side_data(pkt, AV_PKT_DATA_PALETTE, AVPALETTE_SIZE);
2643 if (!pal) {
2644 av_log(mov->fc, AV_LOG_ERROR, "Cannot append palette to packet\n");
2645 } else {
2646 memcpy(pal, sc->palette, AVPALETTE_SIZE);
2647 sc->has_palette = 0;
2648 }
2649 }
e1c1b0ff
RD
2650#if CONFIG_DV_DEMUXER
2651 if (mov->dv_demux && sc->dv_audio_container) {
ab88b25f 2652 avpriv_dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size);
e1c1b0ff
RD
2653 av_free(pkt->data);
2654 pkt->size = 0;
ab88b25f 2655 ret = avpriv_dv_get_packet(mov->dv_demux, pkt);
e1c1b0ff
RD
2656 if (ret < 0)
2657 return ret;
2658 }
312954f0 2659#endif
3fe4d5d4
RD
2660 }
2661
b72708f8
BC
2662 pkt->stream_index = sc->ffindex;
2663 pkt->dts = sample->timestamp;
2664 if (sc->ctts_data) {
bbe46bc4 2665 pkt->pts = pkt->dts + sc->dts_shift + sc->ctts_data[sc->ctts_index].duration;
b72708f8 2666 /* update ctts context */
a234e38d
BC
2667 sc->ctts_sample++;
2668 if (sc->ctts_index < sc->ctts_count &&
2669 sc->ctts_data[sc->ctts_index].count == sc->ctts_sample) {
2670 sc->ctts_index++;
2671 sc->ctts_sample = 0;
b565ea09 2672 }
0c5f76f7
BC
2673 if (sc->wrong_dts)
2674 pkt->dts = AV_NOPTS_VALUE;
b72708f8 2675 } else {
f0f2218d 2676 int64_t next_dts = (sc->current_sample < st->nb_index_entries) ?
e8430214
HG
2677 st->index_entries[sc->current_sample].timestamp : st->duration;
2678 pkt->duration = next_dts - pkt->dts;
b72708f8 2679 pkt->pts = pkt->dts;
b565ea09 2680 }
3fe4d5d4
RD
2681 if (st->discard == AVDISCARD_ALL)
2682 goto retry;
cc947f04 2683 pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? AV_PKT_FLAG_KEY : 0;
b72708f8 2684 pkt->pos = sample->pos;
dfd2a005 2685 av_dlog(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n",
29c90869 2686 pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
b72708f8
BC
2687 return 0;
2688}
3ffe3793 2689
e26df9eb 2690static int mov_seek_stream(AVFormatContext *s, AVStream *st, int64_t timestamp, int flags)
b72708f8
BC
2691{
2692 MOVStreamContext *sc = st->priv_data;
2693 int sample, time_sample;
2694 int i;
115329f1 2695
b72708f8 2696 sample = av_index_search_timestamp(st, timestamp, flags);
dfd2a005 2697 av_dlog(s, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
380966a8
JS
2698 if (sample < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
2699 sample = 0;
b72708f8 2700 if (sample < 0) /* not sure what to do */
bcd5d979 2701 return AVERROR_INVALIDDATA;
b72708f8 2702 sc->current_sample = sample;
dfd2a005 2703 av_dlog(s, "stream %d, found sample %d\n", st->index, sc->current_sample);
b72708f8
BC
2704 /* adjust ctts index */
2705 if (sc->ctts_data) {
2706 time_sample = 0;
2707 for (i = 0; i < sc->ctts_count; i++) {
54a5c719
BC
2708 int next = time_sample + sc->ctts_data[i].count;
2709 if (next > sc->current_sample) {
a234e38d
BC
2710 sc->ctts_index = i;
2711 sc->ctts_sample = sc->current_sample - time_sample;
b72708f8 2712 break;
115329f1 2713 }
54a5c719 2714 time_sample = next;
247d56f5 2715 }
247d56f5 2716 }
b72708f8 2717 return sample;
6cea494e
ZK
2718}
2719
961e0ccd 2720static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
baf25c9d 2721{
b72708f8
BC
2722 AVStream *st;
2723 int64_t seek_timestamp, timestamp;
2724 int sample;
2725 int i;
baf25c9d 2726
b72708f8 2727 if (stream_index >= s->nb_streams)
bcd5d979 2728 return AVERROR_INVALIDDATA;
8dc81a45
BC
2729 if (sample_time < 0)
2730 sample_time = 0;
baf25c9d 2731
b72708f8 2732 st = s->streams[stream_index];
e26df9eb 2733 sample = mov_seek_stream(s, st, sample_time, flags);
b72708f8 2734 if (sample < 0)
bcd5d979 2735 return sample;
baf25c9d 2736
b72708f8
BC
2737 /* adjust seek timestamp to found sample timestamp */
2738 seek_timestamp = st->index_entries[sample].timestamp;
baf25c9d 2739
b72708f8
BC
2740 for (i = 0; i < s->nb_streams; i++) {
2741 st = s->streams[i];
3fe4d5d4 2742 if (stream_index == i)
b72708f8 2743 continue;
baf25c9d 2744
b72708f8 2745 timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
e26df9eb 2746 mov_seek_stream(s, st, timestamp, flags);
115329f1 2747 }
baf25c9d
GC
2748 return 0;
2749}
baf25c9d 2750
a266644f 2751static int mov_read_close(AVFormatContext *s)
6cea494e 2752{
e4141433 2753 MOVContext *mov = s->priv_data;
6c00a9de
BC
2754 int i, j;
2755
2756 for (i = 0; i < s->nb_streams; i++) {
e49da827
BC
2757 AVStream *st = s->streams[i];
2758 MOVStreamContext *sc = st->priv_data;
6c00a9de 2759
7c622eed 2760 av_freep(&sc->ctts_data);
adeb9071 2761 for (j = 0; j < sc->drefs_count; j++) {
221e21b7 2762 av_freep(&sc->drefs[j].path);
adeb9071
BC
2763 av_freep(&sc->drefs[j].dir);
2764 }
221e21b7
BC
2765 av_freep(&sc->drefs);
2766 if (sc->pb && sc->pb != s->pb)
22a3212e 2767 avio_close(sc->pb);
4440b118 2768 }
6c00a9de
BC
2769
2770 if (mov->dv_demux) {
5a7ba586 2771 for (i = 0; i < mov->dv_fctx->nb_streams; i++) {
b60c0454
BC
2772 av_freep(&mov->dv_fctx->streams[i]->codec);
2773 av_freep(&mov->dv_fctx->streams[i]);
2774 }
2775 av_freep(&mov->dv_fctx);
2776 av_freep(&mov->dv_demux);
2777 }
6c00a9de 2778
61aedb0f 2779 av_freep(&mov->trex_data);
6c00a9de 2780
6cea494e
ZK
2781 return 0;
2782}
2783
c6610a21 2784AVInputFormat ff_mov_demuxer = {
dfc2c4d9
AK
2785 .name = "mov,mp4,m4a,3gp,3g2,mj2",
2786 .long_name = NULL_IF_CONFIG_SMALL("QuickTime/MPEG-4/Motion JPEG 2000 format"),
2787 .priv_data_size = sizeof(MOVContext),
2788 .read_probe = mov_probe,
2789 .read_header = mov_read_header,
2790 .read_packet = mov_read_packet,
2791 .read_close = mov_read_close,
2792 .read_seek = mov_read_seek,
6cea494e 2793};