Parse strf mov atoms
[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 *
b78e7197
DB
6 * This file is part of FFmpeg.
7 *
8 * FFmpeg 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 *
b78e7197 13 * FFmpeg 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
b78e7197 19 * License along with FFmpeg; 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
BC
26//#define DEBUG_METADATA
27//#define MOV_EXPORT_ALL_METADATA
4e5ef14f 28
6a5d31ac 29#include "libavutil/intreadwrite.h"
49674dd0 30#include "libavutil/avstring.h"
6cea494e 31#include "avformat.h"
9d9f4119 32#include "riff.h"
e40ee6a2 33#include "isom.h"
245976da
DB
34#include "libavcodec/mpeg4audio.h"
35#include "libavcodec/mpegaudiodata.h"
9106a698 36#include "libavcodec/get_bits.h"
6cea494e 37
b250f9c6 38#if CONFIG_ZLIB
0147f198
FR
39#include <zlib.h>
40#endif
41
6cea494e
ZK
42/*
43 * First version by Francois Revol revol@free.fr
115329f1 44 * Seek function by Gael Chardon gael.dev@4now.net
5ca1d879 45 *
6cea494e 46 * Features and limitations:
5ca1d879 47 * - reads most of the QT files I have (at least the structure),
6cea494e 48 * Sample QuickTime files with mp3 audio can be found at: http://www.3ivx.com/showcase.html
6cea494e 49 * - the code is quite ugly... maybe I won't do it recursive next time :-)
5ca1d879 50 *
6cea494e
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51 * Funny I didn't know about http://sourceforge.net/projects/qt-ffmpeg/
52 * when coding this :) (it's a writer anyway)
5ca1d879 53 *
6cea494e
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54 * Reference documents:
55 * http://www.geocities.com/xhelmboyx/quicktime/formats/qtm-layout.txt
56 * Apple:
baf25c9d 57 * http://developer.apple.com/documentation/QuickTime/QTFF/
15c8dbe7 58 * http://developer.apple.com/documentation/QuickTime/QTFF/qtff.pdf
6cea494e
ZK
59 * QuickTime is a trademark of Apple (AFAIK :))
60 */
61
b595afaa
MM
62#include "qtpalette.h"
63
baf25c9d 64
cd7352d5
MN
65#undef NDEBUG
66#include <assert.h>
67
6cea494e
ZK
68/* XXX: it's the first time I make a recursive parser I think... sorry if it's ugly :P */
69
70/* those functions parse an atom */
71/* return code:
e3c4740f 72 0: continue to parse next atom
d9526386 73 <0: error occurred, exit
e3c4740f 74*/
6cea494e
ZK
75/* links atom IDs to parse functions */
76typedef struct MOVParseTableEntry {
0c1a9eda 77 uint32_t type;
c3e92a6c 78 int (*parse)(MOVContext *ctx, ByteIOContext *pb, MOVAtom atom);
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ZK
79} MOVParseTableEntry;
80
73d07c27
BC
81static const MOVParseTableEntry mov_default_parse_table[];
82
c6026e43
BC
83static int mov_metadata_trkn(MOVContext *c, ByteIOContext *pb, unsigned len)
84{
85 char buf[16];
86
87 get_be16(pb); // unknown
88 snprintf(buf, sizeof(buf), "%d", get_be16(pb));
89 av_metadata_set(&c->fc->metadata, "track", buf);
90
91 get_be16(pb); // total tracks
92
93 return 0;
94}
95
08a186c6
BC
96static const uint32_t mac_to_unicode[128] = {
97 0x00C4,0x00C5,0x00C7,0x00C9,0x00D1,0x00D6,0x00DC,0x00E1,
98 0x00E0,0x00E2,0x00E4,0x00E3,0x00E5,0x00E7,0x00E9,0x00E8,
99 0x00EA,0x00EB,0x00ED,0x00EC,0x00EE,0x00EF,0x00F1,0x00F3,
100 0x00F2,0x00F4,0x00F6,0x00F5,0x00FA,0x00F9,0x00FB,0x00FC,
101 0x2020,0x00B0,0x00A2,0x00A3,0x00A7,0x2022,0x00B6,0x00DF,
102 0x00AE,0x00A9,0x2122,0x00B4,0x00A8,0x2260,0x00C6,0x00D8,
103 0x221E,0x00B1,0x2264,0x2265,0x00A5,0x00B5,0x2202,0x2211,
104 0x220F,0x03C0,0x222B,0x00AA,0x00BA,0x03A9,0x00E6,0x00F8,
105 0x00BF,0x00A1,0x00AC,0x221A,0x0192,0x2248,0x2206,0x00AB,
106 0x00BB,0x2026,0x00A0,0x00C0,0x00C3,0x00D5,0x0152,0x0153,
107 0x2013,0x2014,0x201C,0x201D,0x2018,0x2019,0x00F7,0x25CA,
108 0x00FF,0x0178,0x2044,0x20AC,0x2039,0x203A,0xFB01,0xFB02,
109 0x2021,0x00B7,0x201A,0x201E,0x2030,0x00C2,0x00CA,0x00C1,
110 0x00CB,0x00C8,0x00CD,0x00CE,0x00CF,0x00CC,0x00D3,0x00D4,
111 0xF8FF,0x00D2,0x00DA,0x00DB,0x00D9,0x0131,0x02C6,0x02DC,
112 0x00AF,0x02D8,0x02D9,0x02DA,0x00B8,0x02DD,0x02DB,0x02C7,
113};
114
115static int mov_read_mac_string(MOVContext *c, ByteIOContext *pb, int len,
116 char *dst, int dstlen)
117{
118 char *p = dst;
119 char *end = dst+dstlen-1;
120 int i;
121
122 for (i = 0; i < len; i++) {
123 uint8_t t, c = get_byte(pb);
124 if (c < 0x80 && p < end)
125 *p++ = c;
126 else
127 PUT_UTF8(mac_to_unicode[c-0x80], t, if (p < end) *p++ = t;);
128 }
129 *p = 0;
130 return p - dst;
131}
132
0fb44a4e
BC
133static int mov_read_udta_string(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
134{
135#ifdef MOV_EXPORT_ALL_METADATA
136 char tmp_key[5];
137#endif
138 char str[1024], key2[16], language[4] = {0};
139 const char *key = NULL;
08a186c6
BC
140 uint16_t str_size, langcode = 0;
141 uint32_t data_type = 0;
c6026e43 142 int (*parse)(MOVContext*, ByteIOContext*, unsigned) = NULL;
0fb44a4e
BC
143
144 switch (atom.type) {
145 case MKTAG(0xa9,'n','a','m'): key = "title"; break;
146 case MKTAG(0xa9,'a','u','t'):
55d2e32a
BC
147 case MKTAG(0xa9,'A','R','T'): key = "author"; break;
148 case MKTAG(0xa9,'w','r','t'): key = "composer"; break;
b9c78bca 149 case MKTAG( 'c','p','r','t'):
0fb44a4e
BC
150 case MKTAG(0xa9,'c','p','y'): key = "copyright"; break;
151 case MKTAG(0xa9,'c','m','t'):
152 case MKTAG(0xa9,'i','n','f'): key = "comment"; break;
153 case MKTAG(0xa9,'a','l','b'): key = "album"; break;
ca76a119 154 case MKTAG(0xa9,'d','a','y'): key = "date"; break;
0fb44a4e
BC
155 case MKTAG(0xa9,'g','e','n'): key = "genre"; break;
156 case MKTAG(0xa9,'t','o','o'):
a4cb56aa 157 case MKTAG(0xa9,'e','n','c'): key = "encoder"; break;
7382902b
DC
158 case MKTAG( 'd','e','s','c'): key = "description";break;
159 case MKTAG( 'l','d','e','s'): key = "synopsis"; break;
160 case MKTAG( 't','v','s','h'): key = "show"; break;
161 case MKTAG( 't','v','e','n'): key = "episode_id";break;
162 case MKTAG( 't','v','n','n'): key = "network"; break;
c6026e43
BC
163 case MKTAG( 't','r','k','n'): key = "track";
164 parse = mov_metadata_trkn; break;
0fb44a4e
BC
165 }
166
167 if (c->itunes_metadata && atom.size > 8) {
168 int data_size = get_be32(pb);
169 int tag = get_le32(pb);
170 if (tag == MKTAG('d','a','t','a')) {
08a186c6 171 data_type = get_be32(pb); // type
0fb44a4e
BC
172 get_be32(pb); // unknown
173 str_size = data_size - 16;
174 atom.size -= 16;
175 } else return 0;
176 } else if (atom.size > 4 && key && !c->itunes_metadata) {
177 str_size = get_be16(pb); // string length
08a186c6
BC
178 langcode = get_be16(pb);
179 ff_mov_lang_to_iso639(langcode, language);
0fb44a4e
BC
180 atom.size -= 4;
181 } else
182 str_size = atom.size;
183
184#ifdef MOV_EXPORT_ALL_METADATA
185 if (!key) {
186 snprintf(tmp_key, 5, "%.4s", (char*)&atom.type);
187 key = tmp_key;
188 }
189#endif
190
191 if (!key)
192 return 0;
193 if (atom.size < 0)
194 return -1;
195
196 str_size = FFMIN3(sizeof(str)-1, str_size, atom.size);
c6026e43
BC
197
198 if (parse)
199 parse(c, pb, str_size);
200 else {
08a186c6
BC
201 if (data_type == 3 || (data_type == 0 && langcode < 0x800)) { // MAC Encoded
202 mov_read_mac_string(c, pb, str_size, str, sizeof(str));
203 } else {
204 get_buffer(pb, str, str_size);
205 str[str_size] = 0;
206 }
f584386d
BC
207 av_metadata_set(&c->fc->metadata, key, str);
208 if (*language && strcmp(language, "und")) {
209 snprintf(key2, sizeof(key2), "%s-%s", key, language);
210 av_metadata_set(&c->fc->metadata, key2, str);
211 }
c6026e43 212 }
0fb44a4e
BC
213#ifdef DEBUG_METADATA
214 av_log(c->fc, AV_LOG_DEBUG, "lang \"%3s\" ", language);
215 av_log(c->fc, AV_LOG_DEBUG, "tag \"%s\" value \"%s\" atom \"%.4s\" %d %lld\n",
216 key, str, (char*)&atom.type, str_size, atom.size);
217#endif
218
219 return 0;
220}
873358e5 221
c3e92a6c 222static int mov_read_default(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
6cea494e 223{
b6a17df4 224 int64_t total_size = 0;
c3e92a6c 225 MOVAtom a;
6cea494e 226 int i;
5ca1d879 227
9ed83b0a 228 if (atom.size < 0)
fa22ca22 229 atom.size = INT64_MAX;
7b1312fa 230 while (total_size + 8 < atom.size && !url_feof(pb)) {
873358e5 231 int (*parse)(MOVContext*, ByteIOContext*, MOVAtom) = NULL;
bb270c08 232 a.size = atom.size;
bcfe2ba0 233 a.type=0;
5ca1d879 234 if(atom.size >= 8) {
bb270c08 235 a.size = get_be32(pb);
5ca1d879 236 a.type = get_le32(pb);
6cea494e 237 }
bb270c08 238 total_size += 8;
29c90869
BC
239 dprintf(c->fc, "type: %08x %.4s sz: %"PRIx64" %"PRIx64" %"PRIx64"\n",
240 a.type, (char*)&a.type, a.size, atom.size, total_size);
5ca1d879 241 if (a.size == 1) { /* 64 bit extended size */
bb270c08 242 a.size = get_be64(pb) - 8;
5ca1d879 243 total_size += 8;
6cea494e 244 }
bb270c08
DB
245 if (a.size == 0) {
246 a.size = atom.size - total_size;
247 if (a.size <= 8)
5cd62665 248 break;
bb270c08 249 }
bb270c08 250 a.size -= 8;
8622613d 251 if(a.size < 0)
568e18b1 252 break;
3d2308b0 253 a.size = FFMIN(a.size, atom.size - total_size);
115329f1 254
873358e5
BC
255 for (i = 0; mov_default_parse_table[i].type; i++)
256 if (mov_default_parse_table[i].type == a.type) {
257 parse = mov_default_parse_table[i].parse;
258 break;
259 }
11979c46 260
873358e5
BC
261 // container is user data
262 if (!parse && (atom.type == MKTAG('u','d','t','a') ||
263 atom.type == MKTAG('i','l','s','t')))
264 parse = mov_read_udta_string;
265
266 if (!parse) { /* skip leaf atoms data */
5ca1d879 267 url_fskip(pb, a.size);
bb270c08 268 } else {
bc5c918e 269 int64_t start_pos = url_ftell(pb);
5c72cad8 270 int64_t left;
a510991c
BC
271 int err = parse(c, pb, a);
272 if (err < 0)
273 return err;
49544546
BC
274 if (c->found_moov && c->found_mdat &&
275 (url_is_streamed(pb) || start_pos + a.size == url_fsize(pb)))
276 return 0;
5c72cad8
BC
277 left = a.size - url_ftell(pb) + start_pos;
278 if (left > 0) /* skip garbage at atom end */
279 url_fskip(pb, left);
bb270c08 280 }
6cea494e 281
5ca1d879 282 total_size += a.size;
6cea494e
ZK
283 }
284
a510991c 285 if (total_size < atom.size && atom.size < 0x7ffff)
5ca1d879 286 url_fskip(pb, atom.size - total_size);
5cd62665 287
a510991c 288 return 0;
6cea494e
ZK
289}
290
c3e92a6c 291static int mov_read_dref(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
221e21b7 292{
6a63ff19
BC
293 AVStream *st;
294 MOVStreamContext *sc;
221e21b7
BC
295 int entries, i, j;
296
6a63ff19
BC
297 if (c->fc->nb_streams < 1)
298 return 0;
299 st = c->fc->streams[c->fc->nb_streams-1];
300 sc = st->priv_data;
301
221e21b7
BC
302 get_be32(pb); // version + flags
303 entries = get_be32(pb);
304 if (entries >= UINT_MAX / sizeof(*sc->drefs))
305 return -1;
221e21b7 306 sc->drefs = av_mallocz(entries * sizeof(*sc->drefs));
0d8f0abf
BC
307 if (!sc->drefs)
308 return AVERROR(ENOMEM);
309 sc->drefs_count = entries;
221e21b7
BC
310
311 for (i = 0; i < sc->drefs_count; i++) {
c3e92a6c 312 MOVDref *dref = &sc->drefs[i];
221e21b7 313 uint32_t size = get_be32(pb);
bc5c918e 314 int64_t next = url_ftell(pb) + size - 4;
221e21b7
BC
315
316 dref->type = get_le32(pb);
317 get_be32(pb); // version + flags
318 dprintf(c->fc, "type %.4s size %d\n", (char*)&dref->type, size);
319
320 if (dref->type == MKTAG('a','l','i','s') && size > 150) {
321 /* macintosh alias record */
322 uint16_t volume_len, len;
221e21b7
BC
323 int16_t type;
324
325 url_fskip(pb, 10);
326
327 volume_len = get_byte(pb);
328 volume_len = FFMIN(volume_len, 27);
adeb9071
BC
329 get_buffer(pb, dref->volume, 27);
330 dref->volume[volume_len] = 0;
331 av_log(c->fc, AV_LOG_DEBUG, "volume %s, len %d\n", dref->volume, volume_len);
221e21b7 332
adeb9071
BC
333 url_fskip(pb, 12);
334
335 len = get_byte(pb);
336 len = FFMIN(len, 63);
337 get_buffer(pb, dref->filename, 63);
338 dref->filename[len] = 0;
339 av_log(c->fc, AV_LOG_DEBUG, "filename %s, len %d\n", dref->filename, len);
340
341 url_fskip(pb, 16);
342
343 /* read next level up_from_alias/down_to_target */
344 dref->nlvl_from = get_be16(pb);
345 dref->nlvl_to = get_be16(pb);
346 av_log(c->fc, AV_LOG_DEBUG, "nlvl from %d, nlvl to %d\n",
347 dref->nlvl_from, dref->nlvl_to);
348
349 url_fskip(pb, 16);
221e21b7
BC
350
351 for (type = 0; type != -1 && url_ftell(pb) < next; ) {
352 type = get_be16(pb);
353 len = get_be16(pb);
354 av_log(c->fc, AV_LOG_DEBUG, "type %d, len %d\n", type, len);
355 if (len&1)
356 len += 1;
357 if (type == 2) { // absolute path
dbb37657 358 av_free(dref->path);
221e21b7 359 dref->path = av_mallocz(len+1);
2f4568e5
BC
360 if (!dref->path)
361 return AVERROR(ENOMEM);
221e21b7 362 get_buffer(pb, dref->path, len);
adeb9071 363 if (len > volume_len && !strncmp(dref->path, dref->volume, volume_len)) {
221e21b7
BC
364 len -= volume_len;
365 memmove(dref->path, dref->path+volume_len, len);
366 dref->path[len] = 0;
367 }
368 for (j = 0; j < len; j++)
369 if (dref->path[j] == ':')
370 dref->path[j] = '/';
371 av_log(c->fc, AV_LOG_DEBUG, "path %s\n", dref->path);
adeb9071
BC
372 } else if (type == 0) { // directory name
373 av_free(dref->dir);
374 dref->dir = av_malloc(len+1);
375 if (!dref->dir)
376 return AVERROR(ENOMEM);
377 get_buffer(pb, dref->dir, len);
378 dref->dir[len] = 0;
379 for (j = 0; j < len; j++)
380 if (dref->dir[j] == ':')
381 dref->dir[j] = '/';
382 av_log(c->fc, AV_LOG_DEBUG, "dir %s\n", dref->dir);
221e21b7
BC
383 } else
384 url_fskip(pb, len);
385 }
386 }
387 url_fseek(pb, next, SEEK_SET);
388 }
389 return 0;
390}
391
c3e92a6c 392static int mov_read_hdlr(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
6cea494e 393{
fefe43ff 394 AVStream *st;
0c1a9eda 395 uint32_t type;
0c1a9eda 396 uint32_t ctype;
b6a17df4 397
fefe43ff
AC
398 if (c->fc->nb_streams < 1) // meta before first trak
399 return 0;
400
401 st = c->fc->streams[c->fc->nb_streams-1];
402
6cea494e 403 get_byte(pb); /* version */
23f08617 404 get_be24(pb); /* flags */
6cea494e
ZK
405
406 /* component type */
407 ctype = get_le32(pb);
408 type = get_le32(pb); /* component subtype */
409
9bf1b268
BC
410 dprintf(c->fc, "ctype= %.4s (0x%08x)\n", (char*)&ctype, ctype);
411 dprintf(c->fc, "stype= %.4s\n", (char*)&type);
2229a5c6 412
37ffe34b 413 if (type == MKTAG('v','i','d','e'))
72415b2a 414 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
1c126b4f 415 else if(type == MKTAG('s','o','u','n'))
72415b2a 416 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
1c126b4f 417 else if(type == MKTAG('m','1','a',' '))
95a07973 418 st->codec->codec_id = CODEC_ID_MP2;
f05783c2 419 else if(type == MKTAG('s','u','b','p'))
72415b2a 420 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
f05783c2 421
6cea494e
ZK
422 get_be32(pb); /* component manufacture */
423 get_be32(pb); /* component flags */
424 get_be32(pb); /* component flags mask */
425
6cea494e
ZK
426 return 0;
427}
428
2d423666 429int ff_mp4_read_descr_len(ByteIOContext *pb)
0e7eed09 430{
5cd62665 431 int len = 0;
5ca1d879
ZK
432 int count = 4;
433 while (count--) {
5cd62665 434 int c = get_byte(pb);
bb270c08
DB
435 len = (len << 7) | (c & 0x7f);
436 if (!(c & 0x80))
437 break;
0e7eed09
FB
438 }
439 return len;
440}
441
998257bd 442static int mp4_read_descr(AVFormatContext *fc, ByteIOContext *pb, int *tag)
0e7eed09
FB
443{
444 int len;
445 *tag = get_byte(pb);
2d423666
PR
446 len = ff_mp4_read_descr_len(pb);
447 dprintf(fc, "MPEG4 description: tag=0x%02x len=%d\n", *tag, len);
0e7eed09
FB
448 return len;
449}
450
0b07ac42
BC
451#define MP4ESDescrTag 0x03
452#define MP4DecConfigDescrTag 0x04
453#define MP4DecSpecificDescrTag 0x05
454
1dec3994 455static const AVCodecTag mp4_audio_types[] = {
5c3d507f
AC
456 { CODEC_ID_MP3ON4, AOT_PS }, /* old mp3on4 draft */
457 { CODEC_ID_MP3ON4, AOT_L1 }, /* layer 1 */
458 { CODEC_ID_MP3ON4, AOT_L2 }, /* layer 2 */
459 { CODEC_ID_MP3ON4, AOT_L3 }, /* layer 3 */
b24bbbb4 460 { CODEC_ID_MP4ALS, AOT_ALS }, /* MPEG-4 ALS */
5c3d507f 461 { CODEC_ID_NONE, AOT_NULL },
1dec3994
BC
462};
463
2d423666 464int ff_mov_read_esds(AVFormatContext *fc, ByteIOContext *pb, MOVAtom atom)
5cd62665 465{
6a63ff19 466 AVStream *st;
5cd62665 467 int tag, len;
b6a17df4 468
2d423666 469 if (fc->nb_streams < 1)
6a63ff19 470 return 0;
2d423666 471 st = fc->streams[fc->nb_streams-1];
6a63ff19 472
5cd62665 473 get_be32(pb); /* version + flags */
2d423666 474 len = mp4_read_descr(fc, pb, &tag);
5cd62665 475 if (tag == MP4ESDescrTag) {
bb270c08
DB
476 get_be16(pb); /* ID */
477 get_byte(pb); /* priority */
5cd62665 478 } else
bb270c08 479 get_be16(pb); /* ID */
5cd62665 480
2d423666 481 len = mp4_read_descr(fc, pb, &tag);
5cd62665 482 if (tag == MP4DecConfigDescrTag) {
0b07ac42
BC
483 int object_type_id = get_byte(pb);
484 get_byte(pb); /* stream type */
485 get_be24(pb); /* buffer size db */
486 get_be32(pb); /* max bitrate */
487 get_be32(pb); /* avg bitrate */
488
1a40491e 489 st->codec->codec_id= ff_codec_get_id(ff_mp4_obj_type, object_type_id);
ba278391 490 dprintf(fc, "esds object type id 0x%02x\n", object_type_id);
2d423666 491 len = mp4_read_descr(fc, pb, &tag);
bb270c08 492 if (tag == MP4DecSpecificDescrTag) {
2d423666 493 dprintf(fc, "Specific MPEG4 header len=%d\n", len);
852859ff
BC
494 if((uint64_t)len > (1<<30))
495 return -1;
9a630c25 496 st->codec->extradata = av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
b014dd76
BC
497 if (!st->codec->extradata)
498 return AVERROR(ENOMEM);
17871a02
BC
499 get_buffer(pb, st->codec->extradata, len);
500 st->codec->extradata_size = len;
1dec3994
BC
501 if (st->codec->codec_id == CODEC_ID_AAC) {
502 MPEG4AudioConfig cfg;
503 ff_mpeg4audio_get_config(&cfg, st->codec->extradata,
504 st->codec->extradata_size);
5aea268d 505 st->codec->channels = cfg.channels;
45a97d30
BC
506 if (cfg.object_type == 29 && cfg.sampling_index < 3) // old mp3on4
507 st->codec->sample_rate = ff_mpa_freq_tab[cfg.sampling_index];
508 else
509 st->codec->sample_rate = cfg.sample_rate; // ext sample rate ?
2d423666 510 dprintf(fc, "mp4a config channels %d obj %d ext obj %d "
45a97d30
BC
511 "sample rate %d ext sample rate %d\n", st->codec->channels,
512 cfg.object_type, cfg.ext_object_type,
513 cfg.sample_rate, cfg.ext_sample_rate);
1a40491e
DV
514 if (!(st->codec->codec_id = ff_codec_get_id(mp4_audio_types,
515 cfg.object_type)))
1dec3994 516 st->codec->codec_id = CODEC_ID_AAC;
17871a02 517 }
bb270c08 518 }
5cd62665 519 }
5cd62665
ZK
520 return 0;
521}
522
2d423666
PR
523static int mov_read_esds(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
524{
525 return ff_mov_read_esds(c->fc, pb, atom);
526}
527
6da54074
BC
528static int mov_read_pasp(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
529{
530 const int num = get_be32(pb);
531 const int den = get_be32(pb);
6a63ff19
BC
532 AVStream *st;
533
534 if (c->fc->nb_streams < 1)
535 return 0;
536 st = c->fc->streams[c->fc->nb_streams-1];
537
6da54074 538 if (den != 0) {
f53ee312
BC
539 if ((st->sample_aspect_ratio.den != 1 || st->sample_aspect_ratio.num) && // default
540 (den != st->sample_aspect_ratio.den || num != st->sample_aspect_ratio.num))
6da54074 541 av_log(c->fc, AV_LOG_WARNING,
f53ee312
BC
542 "sample aspect ratio already set to %d:%d, overriding by 'pasp' atom\n",
543 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den);
6da54074
BC
544 st->sample_aspect_ratio.num = num;
545 st->sample_aspect_ratio.den = den;
546 }
547 return 0;
548}
549
5ca1d879 550/* this atom contains actual media data */
c3e92a6c 551static int mov_read_mdat(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
6cea494e 552{
5ca1d879
ZK
553 if(atom.size == 0) /* wrong one (MP4) */
554 return 0;
555 c->found_mdat=1;
5ca1d879
ZK
556 return 0; /* now go for moov */
557}
558
7b5252ce 559/* read major brand, minor version and compatible brands and store them as metadata */
c3e92a6c 560static int mov_read_ftyp(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
4ea28253 561{
7b5252ce 562 uint32_t minor_ver;
563 int comp_brand_size;
564 char minor_ver_str[11]; /* 32 bit integer -> 10 digits + null */
565 char* comp_brands_str;
566 uint8_t type[5] = {0};
567
568 get_buffer(pb, type, 4);
a42bf191 569 if (strcmp(type, "qt "))
152e9a43 570 c->isom = 1;
a512446e 571 av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
7b5252ce 572 av_metadata_set(&c->fc->metadata, "major_brand", type);
573 minor_ver = get_be32(pb); /* minor version */
574 snprintf(minor_ver_str, sizeof(minor_ver_str), "%d", minor_ver);
575 av_metadata_set(&c->fc->metadata, "minor_version", minor_ver_str);
576
577 comp_brand_size = atom.size - 8;
578 if (comp_brand_size < 0)
579 return -1;
580 comp_brands_str = av_malloc(comp_brand_size + 1); /* Add null terminator */
581 if (!comp_brands_str)
582 return AVERROR(ENOMEM);
583 get_buffer(pb, comp_brands_str, comp_brand_size);
584 comp_brands_str[comp_brand_size] = 0;
585 av_metadata_set(&c->fc->metadata, "compatible_brands", comp_brands_str);
586 av_freep(&comp_brands_str);
587
4ea28253
BC
588 return 0;
589}
590
5ca1d879 591/* this atom should contain all header atoms */
c3e92a6c 592static int mov_read_moov(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
5ca1d879 593{
9cf0419b
PI
594 if (mov_read_default(c, pb, atom) < 0)
595 return -1;
5ca1d879
ZK
596 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
597 /* so we don't parse the whole file if over a network */
598 c->found_moov=1;
5ca1d879
ZK
599 return 0; /* now go for mdat */
600}
601
c3e92a6c 602static int mov_read_moof(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
61aedb0f
BC
603{
604 c->fragment.moof_offset = url_ftell(pb) - 8;
605 dprintf(c->fc, "moof offset %llx\n", c->fragment.moof_offset);
606 return mov_read_default(c, pb, atom);
607}
5ca1d879 608
c3e92a6c 609static int mov_read_mdhd(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
5ca1d879 610{
6a63ff19
BC
611 AVStream *st;
612 MOVStreamContext *sc;
613 int version;
49674dd0 614 char language[4] = {0};
dce25564 615 unsigned lang;
5ca1d879 616
6a63ff19
BC
617 if (c->fc->nb_streams < 1)
618 return 0;
619 st = c->fc->streams[c->fc->nb_streams-1];
620 sc = st->priv_data;
621
622 version = get_byte(pb);
b9a87c4d 623 if (version > 1)
7e627332 624 return -1; /* unsupported */
5ca1d879 625
23f08617 626 get_be24(pb); /* flags */
f444b977
BC
627 if (version == 1) {
628 get_be64(pb);
629 get_be64(pb);
630 } else {
631 get_be32(pb); /* creation time */
632 get_be32(pb); /* modification time */
633 }
5ca1d879 634
f444b977
BC
635 sc->time_scale = get_be32(pb);
636 st->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
5ca1d879 637
b9a87c4d 638 lang = get_be16(pb); /* language */
49674dd0
AJ
639 if (ff_mov_lang_to_iso639(lang, language))
640 av_metadata_set(&st->metadata, "language", language);
5ca1d879
ZK
641 get_be16(pb); /* quality */
642
643 return 0;
644}
645
c3e92a6c 646static int mov_read_mvhd(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
5ca1d879 647{
1175561e 648 int version = get_byte(pb); /* version */
23f08617 649 get_be24(pb); /* flags */
5ca1d879 650
1175561e
BC
651 if (version == 1) {
652 get_be64(pb);
653 get_be64(pb);
654 } else {
655 get_be32(pb); /* creation time */
656 get_be32(pb); /* modification time */
657 }
5ca1d879 658 c->time_scale = get_be32(pb); /* time scale */
f8c18cd7
BC
659
660 dprintf(c->fc, "time scale = %i\n", c->time_scale);
661
1175561e 662 c->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
5ca1d879
ZK
663 get_be32(pb); /* preferred scale */
664
665 get_be16(pb); /* preferred volume */
666
667 url_fskip(pb, 10); /* reserved */
668
669 url_fskip(pb, 36); /* display matrix */
670
671 get_be32(pb); /* preview time */
672 get_be32(pb); /* preview duration */
673 get_be32(pb); /* poster time */
674 get_be32(pb); /* selection time */
675 get_be32(pb); /* selection duration */
676 get_be32(pb); /* current time */
677 get_be32(pb); /* next track ID */
678
679 return 0;
680}
681
c3e92a6c 682static int mov_read_smi(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
9ed83b0a 683{
6a63ff19
BC
684 AVStream *st;
685
686 if (c->fc->nb_streams < 1)
687 return 0;
688 st = c->fc->streams[c->fc->nb_streams-1];
9ed83b0a 689
568e18b1
MN
690 if((uint64_t)atom.size > (1<<30))
691 return -1;
115329f1 692
9ed83b0a
ZK
693 // currently SVQ3 decoder expect full STSD header - so let's fake it
694 // this should be fixed and just SMI header should be passed
01f4895c 695 av_free(st->codec->extradata);
b014dd76
BC
696 st->codec->extradata = av_mallocz(atom.size + 0x5a + FF_INPUT_BUFFER_PADDING_SIZE);
697 if (!st->codec->extradata)
698 return AVERROR(ENOMEM);
17871a02
BC
699 st->codec->extradata_size = 0x5a + atom.size;
700 memcpy(st->codec->extradata, "SVQ3", 4); // fake
701 get_buffer(pb, st->codec->extradata + 0x5a, atom.size);
702 dprintf(c->fc, "Reading SMI %"PRId64" %s\n", atom.size, st->codec->extradata + 0x5a);
9ed83b0a
ZK
703 return 0;
704}
5ca1d879 705
c3e92a6c 706static int mov_read_enda(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
de23f234 707{
6a63ff19
BC
708 AVStream *st;
709 int little_endian;
710
711 if (c->fc->nb_streams < 1)
712 return 0;
713 st = c->fc->streams[c->fc->nb_streams-1];
de23f234 714
6a63ff19 715 little_endian = get_be16(pb);
fa50a027
BC
716 dprintf(c->fc, "enda %d\n", little_endian);
717 if (little_endian == 1) {
de23f234
BC
718 switch (st->codec->codec_id) {
719 case CODEC_ID_PCM_S24BE:
720 st->codec->codec_id = CODEC_ID_PCM_S24LE;
721 break;
722 case CODEC_ID_PCM_S32BE:
723 st->codec->codec_id = CODEC_ID_PCM_S32LE;
724 break;
a1ef2c4b
PR
725 case CODEC_ID_PCM_F32BE:
726 st->codec->codec_id = CODEC_ID_PCM_F32LE;
727 break;
728 case CODEC_ID_PCM_F64BE:
729 st->codec->codec_id = CODEC_ID_PCM_F64LE;
730 break;
de23f234
BC
731 default:
732 break;
733 }
734 }
735 return 0;
736}
737
014a5102 738/* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
c3e92a6c 739static int mov_read_extradata(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
de23f234 740{
27134437
BC
741 AVStream *st;
742 uint64_t size;
68bc33fa 743 uint8_t *buf;
27134437
BC
744
745 if (c->fc->nb_streams < 1) // will happen with jp2 files
746 return 0;
747 st= c->fc->streams[c->fc->nb_streams-1];
748 size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
68bc33fa 749 if(size > INT_MAX || (uint64_t)atom.size > INT_MAX)
014a5102 750 return -1;
68bc33fa
BC
751 buf= av_realloc(st->codec->extradata, size);
752 if(!buf)
753 return -1;
754 st->codec->extradata= buf;
755 buf+= st->codec->extradata_size;
756 st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE;
757 AV_WB32( buf , atom.size + 8);
758 AV_WL32( buf + 4, atom.type);
759 get_buffer(pb, buf + 8, atom.size);
de23f234
BC
760 return 0;
761}
762
c3e92a6c 763static int mov_read_wave(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
d9b1c197 764{
6a63ff19
BC
765 AVStream *st;
766
767 if (c->fc->nb_streams < 1)
768 return 0;
769 st = c->fc->streams[c->fc->nb_streams-1];
d9b1c197
RT
770
771 if((uint64_t)atom.size > (1<<30))
772 return -1;
115329f1 773
3840147e
MN
774 if (st->codec->codec_id == CODEC_ID_QDM2) {
775 // pass all frma atom to codec, needed at least for QDM2
776 av_free(st->codec->extradata);
b014dd76
BC
777 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
778 if (!st->codec->extradata)
779 return AVERROR(ENOMEM);
3840147e 780 st->codec->extradata_size = atom.size;
b014dd76 781 get_buffer(pb, st->codec->extradata, atom.size);
3840147e 782 } else if (atom.size > 8) { /* to read frma, esds atoms */
9cf0419b
PI
783 if (mov_read_default(c, pb, atom) < 0)
784 return -1;
5c72cad8 785 } else
bb270c08 786 url_fskip(pb, atom.size);
d9b1c197
RT
787 return 0;
788}
789
bde24601
BC
790/**
791 * This function reads atom content and puts data in extradata without tag
792 * nor size unlike mov_read_extradata.
793 */
c3e92a6c 794static int mov_read_glbl(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
169eb021 795{
6a63ff19
BC
796 AVStream *st;
797
798 if (c->fc->nb_streams < 1)
799 return 0;
800 st = c->fc->streams[c->fc->nb_streams-1];
169eb021 801
568e18b1
MN
802 if((uint64_t)atom.size > (1<<30))
803 return -1;
804
01f4895c 805 av_free(st->codec->extradata);
b014dd76
BC
806 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
807 if (!st->codec->extradata)
808 return AVERROR(ENOMEM);
01f4895c 809 st->codec->extradata_size = atom.size;
b014dd76 810 get_buffer(pb, st->codec->extradata, atom.size);
169eb021
MM
811 return 0;
812}
813
653d7aeb
MS
814/**
815 * An strf atom is a BITMAPINFOHEADER struct. This struct is 40 bytes itself,
816 * but can have extradata appended at the end after the 40 bytes belonging
817 * to the struct.
818 */
819static int mov_read_strf(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
820{
821 AVStream *st;
822
823 if (c->fc->nb_streams < 1)
824 return 0;
825 if (atom.size <= 40)
826 return 0;
827 st = c->fc->streams[c->fc->nb_streams-1];
828
829 if((uint64_t)atom.size > (1<<30))
830 return -1;
831
832 av_free(st->codec->extradata);
833 st->codec->extradata = av_mallocz(atom.size - 40 + FF_INPUT_BUFFER_PADDING_SIZE);
834 if (!st->codec->extradata)
835 return AVERROR(ENOMEM);
836 st->codec->extradata_size = atom.size - 40;
837 url_fskip(pb, 40);
838 get_buffer(pb, st->codec->extradata, atom.size - 40);
839 return 0;
840}
841
c3e92a6c 842static int mov_read_stco(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
5ca1d879 843{
6a63ff19
BC
844 AVStream *st;
845 MOVStreamContext *sc;
568e18b1 846 unsigned int i, entries;
5ca1d879 847
6a63ff19
BC
848 if (c->fc->nb_streams < 1)
849 return 0;
850 st = c->fc->streams[c->fc->nb_streams-1];
851 sc = st->priv_data;
852
5ca1d879 853 get_byte(pb); /* version */
23f08617 854 get_be24(pb); /* flags */
5ca1d879
ZK
855
856 entries = get_be32(pb);
115329f1 857
568e18b1
MN
858 if(entries >= UINT_MAX/sizeof(int64_t))
859 return -1;
115329f1 860
9a630c25 861 sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
5ca1d879 862 if (!sc->chunk_offsets)
0d8f0abf
BC
863 return AVERROR(ENOMEM);
864 sc->chunk_count = entries;
865
37ffe34b
BC
866 if (atom.type == MKTAG('s','t','c','o'))
867 for(i=0; i<entries; i++)
5ca1d879 868 sc->chunk_offsets[i] = get_be32(pb);
37ffe34b
BC
869 else if (atom.type == MKTAG('c','o','6','4'))
870 for(i=0; i<entries; i++)
5ca1d879 871 sc->chunk_offsets[i] = get_be64(pb);
37ffe34b 872 else
5ca1d879 873 return -1;
115329f1 874
5ca1d879
ZK
875 return 0;
876}
877
2288834f
BC
878/**
879 * Compute codec id for 'lpcm' tag.
880 * See CoreAudioTypes and AudioStreamBasicDescription at Apple.
881 */
2d423666 882enum CodecID ff_mov_get_lpcm_codec_id(int bps, int flags)
2288834f
BC
883{
884 if (flags & 1) { // floating point
885 if (flags & 2) { // big endian
886 if (bps == 32) return CODEC_ID_PCM_F32BE;
7e4b3fb8 887 else if (bps == 64) return CODEC_ID_PCM_F64BE;
2288834f 888 } else {
7e4b3fb8
BC
889 if (bps == 32) return CODEC_ID_PCM_F32LE;
890 else if (bps == 64) return CODEC_ID_PCM_F64LE;
2288834f
BC
891 }
892 } else {
893 if (flags & 2) {
894 if (bps == 8)
895 // signed integer
896 if (flags & 4) return CODEC_ID_PCM_S8;
897 else return CODEC_ID_PCM_U8;
898 else if (bps == 16) return CODEC_ID_PCM_S16BE;
899 else if (bps == 24) return CODEC_ID_PCM_S24BE;
900 else if (bps == 32) return CODEC_ID_PCM_S32BE;
901 } else {
902 if (bps == 8)
903 if (flags & 4) return CODEC_ID_PCM_S8;
904 else return CODEC_ID_PCM_U8;
021b8ae3 905 else if (bps == 16) return CODEC_ID_PCM_S16LE;
2288834f
BC
906 else if (bps == 24) return CODEC_ID_PCM_S24LE;
907 else if (bps == 32) return CODEC_ID_PCM_S32LE;
908 }
909 }
fb65d2ca 910 return CODEC_ID_NONE;
2288834f
BC
911}
912
c3e92a6c 913static int mov_read_stsd(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
5ca1d879 914{
6a63ff19
BC
915 AVStream *st;
916 MOVStreamContext *sc;
baf9fb32 917 int j, entries, pseudo_stream_id;
b595afaa 918
6a63ff19
BC
919 if (c->fc->nb_streams < 1)
920 return 0;
921 st = c->fc->streams[c->fc->nb_streams-1];
922 sc = st->priv_data;
923
6cea494e 924 get_byte(pb); /* version */
23f08617 925 get_be24(pb); /* flags */
6cea494e 926
6cea494e
ZK
927 entries = get_be32(pb);
928
117a9190
BC
929 for(pseudo_stream_id=0; pseudo_stream_id<entries; pseudo_stream_id++) {
930 //Parsing Sample description table
b6a17df4 931 enum CodecID id;
28155113 932 int dref_id = 1;
cb41b2b6 933 MOVAtom a = { 0 };
bc5c918e 934 int64_t start_pos = url_ftell(pb);
bb270c08 935 int size = get_be32(pb); /* size */
baf9fb32 936 uint32_t format = get_le32(pb); /* data format */
5cd62665 937
28155113
BC
938 if (size >= 16) {
939 get_be32(pb); /* reserved */
940 get_be16(pb); /* reserved */
941 dref_id = get_be16(pb);
942 }
0e7eed09 943
744a9c75 944 if (st->codec->codec_tag &&
978677a7 945 st->codec->codec_tag != format &&
1a40491e 946 (c->fc->video_codec_id ? ff_codec_get_id(codec_movvideo_tags, format) != c->fc->video_codec_id
1c126b4f 947 : st->codec->codec_tag != MKTAG('j','p','e','g'))
744a9c75 948 ){
7ce68923
DB
949 /* Multiple fourcc, we skip JPEG. This is not correct, we should
950 * export it as a separate AVStream but this needs a few changes
951 * in the MOV demuxer, patch welcome. */
285a3da9 952 av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n");
e7cc4b52
BC
953 url_fskip(pb, size - (url_ftell(pb) - start_pos));
954 continue;
955 }
978677a7 956 sc->pseudo_stream_id = st->codec->codec_tag ? -1 : pseudo_stream_id;
221e21b7 957 sc->dref_id= dref_id;
e7cc4b52 958
bb270c08 959 st->codec->codec_tag = format;
1a40491e 960 id = ff_codec_get_id(codec_movaudio_tags, format);
86b61d42 961 if (id<=0 && ((format&0xFFFF) == 'm'+('s'<<8) || (format&0xFFFF) == 'T'+('S'<<8)))
1a40491e 962 id = ff_codec_get_id(ff_codec_wav_tags, bswap_32(format)&0xFFFF);
bca7db35 963
72415b2a
SS
964 if (st->codec->codec_type != AVMEDIA_TYPE_VIDEO && id > 0) {
965 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
966 } else if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO && /* do not overwrite codec type */
1c126b4f 967 format && format != MKTAG('m','p','4','s')) { /* skip old asf mpeg4 tag */
1a40491e 968 id = ff_codec_get_id(codec_movvideo_tags, format);
99487f42 969 if (id <= 0)
1a40491e 970 id = ff_codec_get_id(ff_codec_bmp_tags, format);
99487f42 971 if (id > 0)
72415b2a
SS
972 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
973 else if(st->codec->codec_type == AVMEDIA_TYPE_DATA){
1a40491e 974 id = ff_codec_get_id(ff_codec_movsubtitle_tags, format);
1e3c9307 975 if(id > 0)
72415b2a 976 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
1e3c9307 977 }
99487f42
BC
978 }
979
29c90869
BC
980 dprintf(c->fc, "size=%d 4CC= %c%c%c%c codec_type=%d\n", size,
981 (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff,
982 (format >> 24) & 0xff, st->codec->codec_type);
a20da52c 983
72415b2a 984 if(st->codec->codec_type==AVMEDIA_TYPE_VIDEO) {
08a186c6 985 unsigned int color_depth, len;
baf9fb32 986 int color_greyscale;
baf9fb32 987
01f4895c 988 st->codec->codec_id = id;
6cea494e
ZK
989 get_be16(pb); /* version */
990 get_be16(pb); /* revision level */
991 get_be32(pb); /* vendor */
992 get_be32(pb); /* temporal quality */
94472c1d 993 get_be32(pb); /* spatial quality */
3cb4ee51
BC
994
995 st->codec->width = get_be16(pb); /* width */
996 st->codec->height = get_be16(pb); /* height */
997
6cea494e
ZK
998 get_be32(pb); /* horiz resolution */
999 get_be32(pb); /* vert resolution */
1000 get_be32(pb); /* data size, always 0 */
43612ffe 1001 get_be16(pb); /* frames per samples */
f8c18cd7 1002
08a186c6
BC
1003 len = get_byte(pb); /* codec name, pascal string */
1004 if (len > 31)
1005 len = 31;
1006 mov_read_mac_string(c, pb, len, st->codec->codec_name, 32);
1007 if (len < 31)
1008 url_fskip(pb, 31 - len);
1009 /* codec_tag YV12 triggers an UV swap in rawdec.c */
1010 if (!memcmp(st->codec->codec_name, "Planar Y'CbCr 8-bit 4:2:0", 25))
1011 st->codec->codec_tag=MKTAG('I', '4', '2', '0');
5cd62665 1012
dd1c8f3e 1013 st->codec->bits_per_coded_sample = get_be16(pb); /* depth */
01f4895c 1014 st->codec->color_table_id = get_be16(pb); /* colortable id */
0de2157f 1015 dprintf(c->fc, "depth %d, ctab id %d\n",
dd1c8f3e 1016 st->codec->bits_per_coded_sample, st->codec->color_table_id);
b595afaa 1017 /* figure out the palette situation */
dd1c8f3e
LA
1018 color_depth = st->codec->bits_per_coded_sample & 0x1F;
1019 color_greyscale = st->codec->bits_per_coded_sample & 0x20;
b595afaa
MM
1020
1021 /* if the depth is 2, 4, or 8 bpp, file is palettized */
115329f1 1022 if ((color_depth == 2) || (color_depth == 4) ||
b595afaa 1023 (color_depth == 8)) {
47e1d7ef
BC
1024 /* for palette traversal */
1025 unsigned int color_start, color_count, color_end;
1026 unsigned char r, g, b;
1027
e49da827 1028 st->codec->palctrl = av_malloc(sizeof(*st->codec->palctrl));
b595afaa 1029 if (color_greyscale) {
47e1d7ef 1030 int color_index, color_dec;
b595afaa 1031 /* compute the greyscale palette */
dd1c8f3e 1032 st->codec->bits_per_coded_sample = color_depth;
b595afaa
MM
1033 color_count = 1 << color_depth;
1034 color_index = 255;
1035 color_dec = 256 / (color_count - 1);
1036 for (j = 0; j < color_count; j++) {
1037 r = g = b = color_index;
e49da827 1038 st->codec->palctrl->palette[j] =
b595afaa
MM
1039 (r << 16) | (g << 8) | (b);
1040 color_index -= color_dec;
1041 if (color_index < 0)
1042 color_index = 0;
1043 }
71f36235 1044 } else if (st->codec->color_table_id) {
47e1d7ef 1045 const uint8_t *color_table;
b595afaa
MM
1046 /* if flag bit 3 is set, use the default palette */
1047 color_count = 1 << color_depth;
1048 if (color_depth == 2)
a90466f7 1049 color_table = ff_qt_default_palette_4;
b595afaa 1050 else if (color_depth == 4)
a90466f7 1051 color_table = ff_qt_default_palette_16;
b595afaa 1052 else
a90466f7 1053 color_table = ff_qt_default_palette_256;
b595afaa
MM
1054
1055 for (j = 0; j < color_count; j++) {
2121b160
RB
1056 r = color_table[j * 3 + 0];
1057 g = color_table[j * 3 + 1];
1058 b = color_table[j * 3 + 2];
e49da827 1059 st->codec->palctrl->palette[j] =
b595afaa
MM
1060 (r << 16) | (g << 8) | (b);
1061 }
b595afaa 1062 } else {
b595afaa
MM
1063 /* load the palette from the file */
1064 color_start = get_be32(pb);
1065 color_count = get_be16(pb);
1066 color_end = get_be16(pb);
8b35bd80
MM
1067 if ((color_start <= 255) &&
1068 (color_end <= 255)) {
9de2919c
MM
1069 for (j = color_start; j <= color_end; j++) {
1070 /* each R, G, or B component is 16 bits;
1071 * only use the top 8 bits; skip alpha bytes
1072 * up front */
1073 get_byte(pb);
1074 get_byte(pb);
1075 r = get_byte(pb);
1076 get_byte(pb);
1077 g = get_byte(pb);
1078 get_byte(pb);
1079 b = get_byte(pb);
1080 get_byte(pb);
e49da827 1081 st->codec->palctrl->palette[j] =
9de2919c 1082 (r << 16) | (g << 8) | (b);
8b35bd80 1083 }
b595afaa
MM
1084 }
1085 }
01f4895c 1086 st->codec->palctrl->palette_changed = 1;
e49da827 1087 }
72415b2a 1088 } else if(st->codec->codec_type==AVMEDIA_TYPE_AUDIO) {
aaef2bb3 1089 int bits_per_sample, flags;
de23f234 1090 uint16_t version = get_be16(pb);
b595afaa 1091
99487f42 1092 st->codec->codec_id = id;
de23f234
BC
1093 get_be16(pb); /* revision level */
1094 get_be32(pb); /* vendor */
6d6d7970 1095
de23f234 1096 st->codec->channels = get_be16(pb); /* channel count */
318c5e05 1097 dprintf(c->fc, "audio channels %d\n", st->codec->channels);
dd1c8f3e 1098 st->codec->bits_per_coded_sample = get_be16(pb); /* sample size */
de23f234 1099
77c75437 1100 sc->audio_cid = get_be16(pb);
de23f234
BC
1101 get_be16(pb); /* packet size = 0 */
1102
1103 st->codec->sample_rate = ((get_be32(pb) >> 16));
1104
5ef3ad59
BC
1105 //Read QT version 1 fields. In version 0 these do not exist.
1106 dprintf(c->fc, "version =%d, isom =%d\n",version,c->isom);
1107 if(!c->isom) {
1108 if(version==1) {
1109 sc->samples_per_frame = get_be32(pb);
1110 get_be32(pb); /* bytes per packet */
1111 sc->bytes_per_frame = get_be32(pb);
1112 get_be32(pb); /* bytes per sample */
1113 } else if(version==2) {
1114 get_be32(pb); /* sizeof struct only */
1115 st->codec->sample_rate = av_int2dbl(get_be64(pb)); /* float 64 */
1116 st->codec->channels = get_be32(pb);
1117 get_be32(pb); /* always 0x7F000000 */
dd1c8f3e 1118 st->codec->bits_per_coded_sample = get_be32(pb); /* bits per channel if sound is uncompressed */
6866dd12 1119 flags = get_be32(pb); /* lpcm format specific flag */
9184d53a
BC
1120 sc->bytes_per_frame = get_be32(pb); /* bytes per audio packet if constant */
1121 sc->samples_per_frame = get_be32(pb); /* lpcm frames per audio packet if constant */
2288834f 1122 if (format == MKTAG('l','p','c','m'))
2d423666 1123 st->codec->codec_id = ff_mov_get_lpcm_codec_id(st->codec->bits_per_coded_sample, flags);
5ef3ad59
BC
1124 }
1125 }
1126
de23f234 1127 switch (st->codec->codec_id) {
b72708f8
BC
1128 case CODEC_ID_PCM_S8:
1129 case CODEC_ID_PCM_U8:
dd1c8f3e 1130 if (st->codec->bits_per_coded_sample == 16)
b72708f8
BC
1131 st->codec->codec_id = CODEC_ID_PCM_S16BE;
1132 break;
0dd39bfe 1133 case CODEC_ID_PCM_S16LE:
de23f234 1134 case CODEC_ID_PCM_S16BE:
dd1c8f3e 1135 if (st->codec->bits_per_coded_sample == 8)
de23f234 1136 st->codec->codec_id = CODEC_ID_PCM_S8;
dd1c8f3e 1137 else if (st->codec->bits_per_coded_sample == 24)
6b477e1b
BC
1138 st->codec->codec_id =
1139 st->codec->codec_id == CODEC_ID_PCM_S16BE ?
1140 CODEC_ID_PCM_S24BE : CODEC_ID_PCM_S24LE;
de23f234 1141 break;
53152765
BC
1142 /* set values for old format before stsd version 1 appeared */
1143 case CODEC_ID_MACE3:
1144 sc->samples_per_frame = 6;
1145 sc->bytes_per_frame = 2*st->codec->channels;
1146 break;
1147 case CODEC_ID_MACE6:
1148 sc->samples_per_frame = 6;
1149 sc->bytes_per_frame = 1*st->codec->channels;
1150 break;
1151 case CODEC_ID_ADPCM_IMA_QT:
1152 sc->samples_per_frame = 64;
1153 sc->bytes_per_frame = 34*st->codec->channels;
1154 break;
cc326d2b
BC
1155 case CODEC_ID_GSM:
1156 sc->samples_per_frame = 160;
1157 sc->bytes_per_frame = 33;
1158 break;
de23f234
BC
1159 default:
1160 break;
6d6d7970 1161 }
14342fd5 1162
9770089d
BC
1163 bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
1164 if (bits_per_sample) {
dd1c8f3e 1165 st->codec->bits_per_coded_sample = bits_per_sample;
9770089d
BC
1166 sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
1167 }
72415b2a 1168 } else if(st->codec->codec_type==AVMEDIA_TYPE_SUBTITLE){
58e9f2ed
DC
1169 // ttxt stsd contains display flags, justification, background
1170 // color, fonts, and default styles, so fake an atom to read it
1171 MOVAtom fake_atom = { .size = size - (url_ftell(pb) - start_pos) };
fb9ac654 1172 if (format != AV_RL32("mp4s")) // mp4s contains a regular esds atom
3dd36041 1173 mov_read_glbl(c, pb, fake_atom);
cc8d87b7 1174 st->codec->codec_id= id;
6cdbff63
DC
1175 st->codec->width = sc->width;
1176 st->codec->height = sc->height;
de23f234
BC
1177 } else {
1178 /* other codec type, just skip (rtp, mp4s, tmcd ...) */
1179 url_fskip(pb, size - (url_ftell(pb) - start_pos));
6cea494e 1180 }
de23f234
BC
1181 /* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */
1182 a.size = size - (url_ftell(pb) - start_pos);
9cf0419b
PI
1183 if (a.size > 8) {
1184 if (mov_read_default(c, pb, a) < 0)
1185 return -1;
1186 } else if (a.size > 0)
de23f234 1187 url_fskip(pb, a.size);
6cea494e 1188 }
115329f1 1189
72415b2a 1190 if(st->codec->codec_type==AVMEDIA_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1)
302c389e 1191 st->codec->sample_rate= sc->time_scale;
e31bd3e3 1192
d00f8e17 1193 /* special codec parameters handling */
e31bd3e3 1194 switch (st->codec->codec_id) {
b250f9c6 1195#if CONFIG_DV_DEMUXER
b60c0454 1196 case CODEC_ID_DVAUDIO:
8e2fd8e1 1197 c->dv_fctx = avformat_alloc_context();
b60c0454
BC
1198 c->dv_demux = dv_init_demux(c->dv_fctx);
1199 if (!c->dv_demux) {
1200 av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
1201 return -1;
1202 }
1203 sc->dv_audio_container = 1;
1204 st->codec->codec_id = CODEC_ID_PCM_S16LE;
1205 break;
989ac5a6 1206#endif
b95319a2 1207 /* no ifdef since parameters are always those */
3f78a3a9 1208 case CODEC_ID_QCELP:
17ad7b24
BC
1209 // force sample rate for qcelp when not stored in mov
1210 if (st->codec->codec_tag != MKTAG('Q','c','l','p'))
1211 st->codec->sample_rate = 8000;
73b458e3 1212 st->codec->frame_size= 160;
061f407e 1213 st->codec->channels= 1; /* really needed */
73b458e3 1214 break;
b95319a2 1215 case CODEC_ID_AMR_NB:
aeb62788 1216 case CODEC_ID_AMR_WB:
cfb5a2ab 1217 st->codec->frame_size= sc->samples_per_frame;
b95319a2 1218 st->codec->channels= 1; /* really needed */
f06188d5 1219 /* force sample rate for amr, stsd in 3gp does not store sample rate */
5b9ce252 1220 if (st->codec->codec_id == CODEC_ID_AMR_NB)
f06188d5 1221 st->codec->sample_rate = 8000;
5b9ce252
BC
1222 else if (st->codec->codec_id == CODEC_ID_AMR_WB)
1223 st->codec->sample_rate = 16000;
b95319a2 1224 break;
a41104f8 1225 case CODEC_ID_MP2:
c59f24e6 1226 case CODEC_ID_MP3:
72415b2a 1227 st->codec->codec_type = AVMEDIA_TYPE_AUDIO; /* force type after stsd for m1a hdlr */
57004ff1 1228 st->need_parsing = AVSTREAM_PARSE_FULL;
a41104f8 1229 break;
5610f20e 1230 case CODEC_ID_GSM:
74e9b9ae
BC
1231 case CODEC_ID_ADPCM_MS:
1232 case CODEC_ID_ADPCM_IMA_WAV:
1233 st->codec->block_align = sc->bytes_per_frame;
1234 break;
be511925 1235 case CODEC_ID_ALAC:
a1532824 1236 if (st->codec->extradata_size == 36) {
364df7b7
BC
1237 st->codec->frame_size = AV_RB32(st->codec->extradata+12);
1238 st->codec->channels = AV_RB8 (st->codec->extradata+21);
a1532824 1239 }
be511925 1240 break;
e31bd3e3
BC
1241 default:
1242 break;
1243 }
5cd62665 1244
6cea494e
ZK
1245 return 0;
1246}
1247
c3e92a6c 1248static int mov_read_stsc(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
6cea494e 1249{
6a63ff19
BC
1250 AVStream *st;
1251 MOVStreamContext *sc;
568e18b1 1252 unsigned int i, entries;
b6a17df4 1253
6a63ff19
BC
1254 if (c->fc->nb_streams < 1)
1255 return 0;
1256 st = c->fc->streams[c->fc->nb_streams-1];
1257 sc = st->priv_data;
1258
6cea494e 1259 get_byte(pb); /* version */
23f08617 1260 get_be24(pb); /* flags */
6cea494e
ZK
1261
1262 entries = get_be32(pb);
115329f1 1263
f8c18cd7
BC
1264 dprintf(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
1265
0d8f0abf
BC
1266 if(entries >= UINT_MAX / sizeof(*sc->stsc_data))
1267 return -1;
04e06cfa
BC
1268 sc->stsc_data = av_malloc(entries * sizeof(*sc->stsc_data));
1269 if (!sc->stsc_data)
0d8f0abf
BC
1270 return AVERROR(ENOMEM);
1271 sc->stsc_count = entries;
1272
6cea494e 1273 for(i=0; i<entries; i++) {
04e06cfa
BC
1274 sc->stsc_data[i].first = get_be32(pb);
1275 sc->stsc_data[i].count = get_be32(pb);
1276 sc->stsc_data[i].id = get_be32(pb);
6cea494e
ZK
1277 }
1278 return 0;
1279}
1280
171a3531
BC
1281static int mov_read_stps(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
1282{
1283 AVStream *st;
1284 MOVStreamContext *sc;
1285 unsigned i, entries;
1286
1287 if (c->fc->nb_streams < 1)
1288 return 0;
1289 st = c->fc->streams[c->fc->nb_streams-1];
1290 sc = st->priv_data;
1291
1292 get_be32(pb); // version + flags
1293
1294 entries = get_be32(pb);
1295 if (entries >= UINT_MAX / sizeof(*sc->stps_data))
1296 return -1;
1297 sc->stps_data = av_malloc(entries * sizeof(*sc->stps_data));
1298 if (!sc->stps_data)
1299 return AVERROR(ENOMEM);
1300 sc->stps_count = entries;
1301
1302 for (i = 0; i < entries; i++) {
1303 sc->stps_data[i] = get_be32(pb);
1304 //dprintf(c->fc, "stps %d\n", sc->stps_data[i]);
1305 }
1306
1307 return 0;
1308}
1309
c3e92a6c 1310static int mov_read_stss(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
247d56f5 1311{
6a63ff19
BC
1312 AVStream *st;
1313 MOVStreamContext *sc;
568e18b1 1314 unsigned int i, entries;
247d56f5 1315
6a63ff19
BC
1316 if (c->fc->nb_streams < 1)
1317 return 0;
1318 st = c->fc->streams[c->fc->nb_streams-1];
1319 sc = st->priv_data;
1320
247d56f5 1321 get_byte(pb); /* version */
23f08617 1322 get_be24(pb); /* flags */
247d56f5
BB
1323
1324 entries = get_be32(pb);
115329f1 1325
0d8f0abf
BC
1326 dprintf(c->fc, "keyframe_count = %d\n", entries);
1327
1c02d96f 1328 if(entries >= UINT_MAX / sizeof(int))
568e18b1 1329 return -1;
1c02d96f 1330 sc->keyframes = av_malloc(entries * sizeof(int));
247d56f5 1331 if (!sc->keyframes)
0d8f0abf
BC
1332 return AVERROR(ENOMEM);
1333 sc->keyframe_count = entries;
1334
247d56f5
BB
1335 for(i=0; i<entries; i++) {
1336 sc->keyframes[i] = get_be32(pb);
f8c18cd7 1337 //dprintf(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
247d56f5
BB
1338 }
1339 return 0;
1340}
1341
c3e92a6c 1342static int mov_read_stsz(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
6cea494e 1343{
6a63ff19
BC
1344 AVStream *st;
1345 MOVStreamContext *sc;
bd27eed6
AC
1346 unsigned int i, entries, sample_size, field_size, num_bytes;
1347 GetBitContext gb;
1348 unsigned char* buf;
b6a17df4 1349
6a63ff19
BC
1350 if (c->fc->nb_streams < 1)
1351 return 0;
1352 st = c->fc->streams[c->fc->nb_streams-1];
1353 sc = st->priv_data;
1354
6cea494e 1355 get_byte(pb); /* version */
23f08617 1356 get_be24(pb); /* flags */
5cd62665 1357
bd27eed6 1358 if (atom.type == MKTAG('s','t','s','z')) {
d0dab0ec
AC
1359 sample_size = get_be32(pb);
1360 if (!sc->sample_size) /* do not overwrite value computed in stsd */
1361 sc->sample_size = sample_size;
1362 field_size = 32;
bd27eed6
AC
1363 } else {
1364 sample_size = 0;
1365 get_be24(pb); /* reserved */
1366 field_size = get_byte(pb);
1367 }
6cea494e 1368 entries = get_be32(pb);
0d8f0abf
BC
1369
1370 dprintf(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, entries);
568e18b1 1371
6cea494e 1372 sc->sample_count = entries;
b72708f8
BC
1373 if (sample_size)
1374 return 0;
1375
bd27eed6
AC
1376 if (field_size != 4 && field_size != 8 && field_size != 16 && field_size != 32) {
1377 av_log(c->fc, AV_LOG_ERROR, "Invalid sample field size %d\n", field_size);
1378 return -1;
1379 }
1380
e4bc8af1 1381 if (entries >= UINT_MAX / sizeof(int) || entries >= (UINT_MAX - 4) / field_size)
0d8f0abf 1382 return -1;
1c02d96f 1383 sc->sample_sizes = av_malloc(entries * sizeof(int));
b6a17df4 1384 if (!sc->sample_sizes)
0d8f0abf
BC
1385 return AVERROR(ENOMEM);
1386
bd27eed6
AC
1387 num_bytes = (entries*field_size+4)>>3;
1388
08a5b4e9 1389 buf = av_malloc(num_bytes+FF_INPUT_BUFFER_PADDING_SIZE);
bd27eed6
AC
1390 if (!buf) {
1391 av_freep(&sc->sample_sizes);
1392 return AVERROR(ENOMEM);
1393 }
1394
1395 if (get_buffer(pb, buf, num_bytes) < num_bytes) {
1396 av_freep(&sc->sample_sizes);
1397 av_free(buf);
1398 return -1;
1399 }
1400
1401 init_get_bits(&gb, buf, 8*num_bytes);
1402
eb61405a 1403 for(i=0; i<entries; i++)
bd27eed6
AC
1404 sc->sample_sizes[i] = get_bits_long(&gb, field_size);
1405
1406 av_free(buf);
6cea494e
ZK
1407 return 0;
1408}
1409
c3e92a6c 1410static int mov_read_stts(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
0147f198 1411{
6a63ff19
BC
1412 AVStream *st;
1413 MOVStreamContext *sc;
568e18b1 1414 unsigned int i, entries;
d957696f
MN
1415 int64_t duration=0;
1416 int64_t total_sample_count=0;
b6a17df4 1417
6a63ff19
BC
1418 if (c->fc->nb_streams < 1)
1419 return 0;
1420 st = c->fc->streams[c->fc->nb_streams-1];
1421 sc = st->priv_data;
1422
0147f198 1423 get_byte(pb); /* version */
23f08617 1424 get_be24(pb); /* flags */
0147f198 1425 entries = get_be32(pb);
0d8f0abf
BC
1426
1427 dprintf(c->fc, "track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries);
1428
c3e92a6c 1429 if(entries >= UINT_MAX / sizeof(*sc->stts_data))
568e18b1 1430 return -1;
c3e92a6c 1431 sc->stts_data = av_malloc(entries * sizeof(*sc->stts_data));
c1da59fa 1432 if (!sc->stts_data)
0d8f0abf
BC
1433 return AVERROR(ENOMEM);
1434 sc->stts_count = entries;
cd7352d5 1435
0147f198 1436 for(i=0; i<entries; i++) {
cd461d48
MN
1437 int sample_duration;
1438 int sample_count;
0147f198 1439
891f64b3 1440 sample_count=get_be32(pb);
0147f198 1441 sample_duration = get_be32(pb);
cd7352d5
MN
1442 sc->stts_data[i].count= sample_count;
1443 sc->stts_data[i].duration= sample_duration;
1444
318c5e05 1445 dprintf(c->fc, "sample_count=%d, sample_duration=%d\n",sample_count,sample_duration);
4e5ef14f 1446
7e815047 1447 duration+=(int64_t)sample_duration*sample_count;
891f64b3 1448 total_sample_count+=sample_count;
891f64b3 1449 }
1450
961e0ccd
MN
1451 st->nb_frames= total_sample_count;
1452 if(duration)
1453 st->duration= duration;
0147f198
FR
1454 return 0;
1455}
1456
c3e92a6c 1457static int mov_read_ctts(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
c4ac052b 1458{
6a63ff19
BC
1459 AVStream *st;
1460 MOVStreamContext *sc;
c4ac052b
MN
1461 unsigned int i, entries;
1462
6a63ff19
BC
1463 if (c->fc->nb_streams < 1)
1464 return 0;
1465 st = c->fc->streams[c->fc->nb_streams-1];
1466 sc = st->priv_data;
1467
c4ac052b 1468 get_byte(pb); /* version */
23f08617 1469 get_be24(pb); /* flags */
c4ac052b 1470 entries = get_be32(pb);
0d8f0abf
BC
1471
1472 dprintf(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
1473
c3e92a6c 1474 if(entries >= UINT_MAX / sizeof(*sc->ctts_data))
c4ac052b 1475 return -1;
c3e92a6c 1476 sc->ctts_data = av_malloc(entries * sizeof(*sc->ctts_data));
c1da59fa 1477 if (!sc->ctts_data)
0d8f0abf
BC
1478 return AVERROR(ENOMEM);
1479 sc->ctts_count = entries;
4e5ef14f 1480
c4ac052b 1481 for(i=0; i<entries; i++) {
70a61ed4
MN
1482 int count =get_be32(pb);
1483 int duration =get_be32(pb);
1484
1485 sc->ctts_data[i].count = count;
1486 sc->ctts_data[i].duration= duration;
e7452721
BC
1487 if (duration < 0)
1488 sc->dts_shift = FFMAX(sc->dts_shift, -duration);
c4ac052b 1489 }
e7452721 1490
bddc2df5 1491 dprintf(c->fc, "dts shift %d\n", sc->dts_shift);
e7452721 1492
c4ac052b
MN
1493 return 0;
1494}
1495
1e77810d
BC
1496static void mov_build_index(MOVContext *mov, AVStream *st)
1497{
1498 MOVStreamContext *sc = st->priv_data;
bc5c918e 1499 int64_t current_offset;
1e77810d
BC
1500 int64_t current_dts = 0;
1501 unsigned int stts_index = 0;
1502 unsigned int stsc_index = 0;
1503 unsigned int stss_index = 0;
171a3531 1504 unsigned int stps_index = 0;
1e77810d 1505 unsigned int i, j;
c5898e86 1506 uint64_t stream_size = 0;
1e77810d 1507
baf2ffd3
BC
1508 /* adjust first dts according to edit list */
1509 if (sc->time_offset) {
2ac736a6 1510 int rescaled = sc->time_offset < 0 ? av_rescale(sc->time_offset, sc->time_scale, mov->time_scale) : sc->time_offset;
bbe46bc4 1511 current_dts = -rescaled;
f03a081d
BC
1512 if (sc->ctts_data && sc->ctts_data[0].duration / sc->stts_data[0].duration > 16) {
1513 /* more than 16 frames delay, dts are likely wrong
1514 this happens with files created by iMovie */
1515 sc->wrong_dts = 1;
1516 st->codec->has_b_frames = 1;
1517 }
baf2ffd3
BC
1518 }
1519
d3bc61ac 1520 /* only use old uncompressed audio chunk demuxing when stts specifies it */
72415b2a 1521 if (!(st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
d3bc61ac 1522 sc->stts_count == 1 && sc->stts_data[0].duration == 1)) {
1e77810d
BC
1523 unsigned int current_sample = 0;
1524 unsigned int stts_sample = 0;
171a3531 1525 unsigned int sample_size;
1e77810d
BC
1526 unsigned int distance = 0;
1527 int key_off = sc->keyframes && sc->keyframes[0] == 1;
1528
4b29ed39
BC
1529 current_dts -= sc->dts_shift;
1530
987e857f
BC
1531 if (sc->sample_count >= UINT_MAX / sizeof(*st->index_entries))
1532 return;
1533 st->index_entries = av_malloc(sc->sample_count*sizeof(*st->index_entries));
1534 if (!st->index_entries)
1535 return;
1536 st->index_entries_allocated_size = sc->sample_count*sizeof(*st->index_entries);
1537
1e77810d
BC
1538 for (i = 0; i < sc->chunk_count; i++) {
1539 current_offset = sc->chunk_offsets[i];
04e06cfa
BC
1540 if (stsc_index + 1 < sc->stsc_count &&
1541 i + 1 == sc->stsc_data[stsc_index + 1].first)
1e77810d 1542 stsc_index++;
04e06cfa 1543 for (j = 0; j < sc->stsc_data[stsc_index].count; j++) {
171a3531 1544 int keyframe = 0;
1e77810d
BC
1545 if (current_sample >= sc->sample_count) {
1546 av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
f0f2218d 1547 return;
1e77810d 1548 }
171a3531
BC
1549
1550 if (!sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index]) {
1551 keyframe = 1;
1e77810d
BC
1552 if (stss_index + 1 < sc->keyframe_count)
1553 stss_index++;
171a3531
BC
1554 } else if (sc->stps_count && current_sample+key_off == sc->stps_data[stps_index]) {
1555 keyframe = 1;
1556 if (stps_index + 1 < sc->stps_count)
1557 stps_index++;
1e77810d 1558 }
171a3531
BC
1559 if (keyframe)
1560 distance = 0;
1e77810d 1561 sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
978677a7 1562 if(sc->pseudo_stream_id == -1 ||
04e06cfa 1563 sc->stsc_data[stsc_index].id - 1 == sc->pseudo_stream_id) {
987e857f
BC
1564 AVIndexEntry *e = &st->index_entries[st->nb_index_entries++];
1565 e->pos = current_offset;
1566 e->timestamp = current_dts;
1567 e->size = sample_size;
1568 e->min_distance = distance;
1569 e->flags = keyframe ? AVINDEX_KEYFRAME : 0;
585dac65
BC
1570 dprintf(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
1571 "size %d, distance %d, keyframe %d\n", st->index, current_sample,
1572 current_offset, current_dts, sample_size, distance, keyframe);
1573 }
6c00a9de 1574
1e77810d 1575 current_offset += sample_size;
c5898e86 1576 stream_size += sample_size;
bbe46bc4 1577 current_dts += sc->stts_data[stts_index].duration;
1e77810d
BC
1578 distance++;
1579 stts_sample++;
1580 current_sample++;
1581 if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
1582 stts_sample = 0;
1583 stts_index++;
1584 }
1585 }
1586 }
fedb1eca
BC
1587 if (st->duration > 0)
1588 st->codec->bit_rate = stream_size*8*sc->time_scale/st->duration;
7e69621f 1589 } else {
987e857f 1590 unsigned chunk_samples, total = 0;
7e69621f 1591
987e857f
BC
1592 // compute total chunk count
1593 for (i = 0; i < sc->stsc_count; i++) {
1594 unsigned count, chunk_count;
7e69621f 1595
987e857f 1596 chunk_samples = sc->stsc_data[i].count;
7e69621f
BC
1597 if (sc->samples_per_frame && chunk_samples % sc->samples_per_frame) {
1598 av_log(mov->fc, AV_LOG_ERROR, "error unaligned chunk\n");
1599 return;
1600 }
1601
987e857f
BC
1602 if (sc->samples_per_frame >= 160) { // gsm
1603 count = chunk_samples / sc->samples_per_frame;
1604 } else if (sc->samples_per_frame > 1) {
1605 unsigned samples = (1024/sc->samples_per_frame)*sc->samples_per_frame;
1606 count = (chunk_samples+samples-1) / samples;
1607 } else {
1608 count = (chunk_samples+1023) / 1024;
1609 }
1610
1611 if (i < sc->stsc_count - 1)
1612 chunk_count = sc->stsc_data[i+1].first - sc->stsc_data[i].first;
1613 else
1614 chunk_count = sc->chunk_count - (sc->stsc_data[i].first - 1);
1615 total += chunk_count * count;
1616 }
1617
1618 dprintf(mov->fc, "chunk count %d\n", total);
1619 if (total >= UINT_MAX / sizeof(*st->index_entries))
1620 return;
1621 st->index_entries = av_malloc(total*sizeof(*st->index_entries));
1622 if (!st->index_entries)
1623 return;
1624 st->index_entries_allocated_size = total*sizeof(*st->index_entries);
1625
1626 // populate index
1627 for (i = 0; i < sc->chunk_count; i++) {
1628 current_offset = sc->chunk_offsets[i];
1629 if (stsc_index + 1 < sc->stsc_count &&
1630 i + 1 == sc->stsc_data[stsc_index + 1].first)
1631 stsc_index++;
1632 chunk_samples = sc->stsc_data[stsc_index].count;
1633
7e69621f 1634 while (chunk_samples > 0) {
987e857f 1635 AVIndexEntry *e;
7e69621f
BC
1636 unsigned size, samples;
1637
1638 if (sc->samples_per_frame >= 160) { // gsm
1639 samples = sc->samples_per_frame;
1640 size = sc->bytes_per_frame;
1641 } else {
1642 if (sc->samples_per_frame > 1) {
1643 samples = FFMIN((1024 / sc->samples_per_frame)*
1644 sc->samples_per_frame, chunk_samples);
1645 size = (samples / sc->samples_per_frame) * sc->bytes_per_frame;
1e77810d 1646 } else {
7e69621f
BC
1647 samples = FFMIN(1024, chunk_samples);
1648 size = samples * sc->sample_size;
1e77810d
BC
1649 }
1650 }
7e69621f 1651
987e857f
BC
1652 if (st->nb_index_entries >= total) {
1653 av_log(mov->fc, AV_LOG_ERROR, "wrong chunk count %d\n", total);
1654 return;
1655 }
1656 e = &st->index_entries[st->nb_index_entries++];
1657 e->pos = current_offset;
1658 e->timestamp = current_dts;
1659 e->size = size;
1660 e->min_distance = 0;
1661 e->flags = AVINDEX_KEYFRAME;
117a9190
BC
1662 dprintf(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", "
1663 "size %d, duration %d\n", st->index, i, current_offset, current_dts,
7e69621f
BC
1664 size, samples);
1665
1666 current_offset += size;
bbe46bc4 1667 current_dts += samples;
7e69621f 1668 chunk_samples -= samples;
1e77810d
BC
1669 }
1670 }
1671 }
1e77810d 1672}
bd991df2 1673
adeb9071
BC
1674static int mov_open_dref(ByteIOContext **pb, char *src, MOVDref *ref)
1675{
6a245905
MN
1676 /* try relative path, we do not try the absolute because it can leak information about our
1677 system to an attacker */
adeb9071
BC
1678 if (ref->nlvl_to > 0 && ref->nlvl_from > 0) {
1679 char filename[1024];
1680 char *src_path;
1681 int i, l;
1682
1683 /* find a source dir */
1684 src_path = strrchr(src, '/');
1685 if (src_path)
1686 src_path++;
1687 else
1688 src_path = src;
1689
1690 /* find a next level down to target */
1691 for (i = 0, l = strlen(ref->path) - 1; l >= 0; l--)
1692 if (ref->path[l] == '/') {
1693 if (i == ref->nlvl_to - 1)
1694 break;
1695 else
1696 i++;
1697 }
1698
1699 /* compose filename if next level down to target was found */
bbdf0d22 1700 if (i == ref->nlvl_to - 1 && src_path - src < sizeof(filename)) {
adeb9071
BC
1701 memcpy(filename, src, src_path - src);
1702 filename[src_path - src] = 0;
1703
1704 for (i = 1; i < ref->nlvl_from; i++)
1705 av_strlcat(filename, "../", 1024);
1706
1707 av_strlcat(filename, ref->path + l + 1, 1024);
1708
1709 if (!url_fopen(pb, filename, URL_RDONLY))
1710 return 0;
1711 }
1712 }
1713
1714 return AVERROR(ENOENT);
1715};
1716
c3e92a6c 1717static int mov_read_trak(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
5ca1d879
ZK
1718{
1719 AVStream *st;
1720 MOVStreamContext *sc;
bd991df2 1721 int ret;
5ca1d879 1722
5ca1d879 1723 st = av_new_stream(c->fc, c->fc->nb_streams);
3efe8848 1724 if (!st) return AVERROR(ENOMEM);
9a630c25 1725 sc = av_mallocz(sizeof(MOVStreamContext));
2922cbdb 1726 if (!sc) return AVERROR(ENOMEM);
5ca1d879 1727
5ca1d879 1728 st->priv_data = sc;
72415b2a 1729 st->codec->codec_type = AVMEDIA_TYPE_DATA;
64d50fa5 1730 sc->ffindex = st->index;
5ca1d879 1731
bd991df2
BC
1732 if ((ret = mov_read_default(c, pb, atom)) < 0)
1733 return ret;
1734
1735 /* sanity checks */
6c00a9de
BC
1736 if (sc->chunk_count && (!sc->stts_count || !sc->stsc_count ||
1737 (!sc->sample_size && !sc->sample_count))) {
6282c5f4
BC
1738 av_log(c->fc, AV_LOG_ERROR, "stream %d, missing mandatory atoms, broken header\n",
1739 st->index);
bd991df2
BC
1740 return 0;
1741 }
6c00a9de 1742
507330b9
BC
1743 if (!sc->time_scale) {
1744 av_log(c->fc, AV_LOG_WARNING, "stream %d, timescale not set\n", st->index);
6c00a9de 1745 sc->time_scale = c->time_scale;
507330b9
BC
1746 if (!sc->time_scale)
1747 sc->time_scale = 1;
1748 }
6c00a9de 1749
bbe46bc4 1750 av_set_pts_info(st, 64, 1, sc->time_scale);
bd991df2 1751
72415b2a 1752 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
5b4f5e5d
BC
1753 !st->codec->frame_size && sc->stts_count == 1) {
1754 st->codec->frame_size = av_rescale(sc->stts_data[0].duration,
1755 st->codec->sample_rate, sc->time_scale);
1756 dprintf(c->fc, "frame size %d\n", st->codec->frame_size);
1757 }
bd991df2 1758
bd991df2
BC
1759 mov_build_index(c, st);
1760
1761 if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) {
adeb9071
BC
1762 MOVDref *dref = &sc->drefs[sc->dref_id - 1];
1763 if (mov_open_dref(&sc->pb, c->fc->filename, dref) < 0)
1764 av_log(c->fc, AV_LOG_ERROR,
1765 "stream %d, error opening alias: path='%s', dir='%s', "
1766 "filename='%s', volume='%s', nlvl_from=%d, nlvl_to=%d\n",
1767 st->index, dref->path, dref->dir, dref->filename,
1768 dref->volume, dref->nlvl_from, dref->nlvl_to);
bd991df2
BC
1769 } else
1770 sc->pb = c->fc->pb;
1771
72415b2a 1772 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
c3aeaa54 1773 if (st->codec->width != sc->width || st->codec->height != sc->height) {
49c43fc2
BC
1774 AVRational r = av_d2q(((double)st->codec->height * sc->width) /
1775 ((double)st->codec->width * sc->height), INT_MAX);
1776 if (st->sample_aspect_ratio.num)
1777 st->sample_aspect_ratio = av_mul_q(st->sample_aspect_ratio, r);
1778 else
1779 st->sample_aspect_ratio = r;
c3aeaa54
BC
1780 }
1781
1782 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
1783 sc->time_scale*st->nb_frames, st->duration, INT_MAX);
c9566115
BC
1784 }
1785
bd991df2 1786 switch (st->codec->codec_id) {
b250f9c6 1787#if CONFIG_H261_DECODER
bd991df2
BC
1788 case CODEC_ID_H261:
1789#endif
b250f9c6 1790#if CONFIG_H263_DECODER
bd991df2
BC
1791 case CODEC_ID_H263:
1792#endif
a0dd3c00
BC
1793#if CONFIG_H264_DECODER
1794 case CODEC_ID_H264:
1795#endif
b250f9c6 1796#if CONFIG_MPEG4_DECODER
bd991df2
BC
1797 case CODEC_ID_MPEG4:
1798#endif
6c00a9de 1799 st->codec->width = 0; /* let decoder init width/height */
bd991df2
BC
1800 st->codec->height= 0;
1801 break;
bd991df2 1802 }
f9900374
BC
1803
1804 /* Do not need those anymore. */
1805 av_freep(&sc->chunk_offsets);
04e06cfa 1806 av_freep(&sc->stsc_data);
f9900374
BC
1807 av_freep(&sc->sample_sizes);
1808 av_freep(&sc->keyframes);
1809 av_freep(&sc->stts_data);
171a3531 1810 av_freep(&sc->stps_data);
f9900374 1811
bd991df2 1812 return 0;
5ca1d879
ZK
1813}
1814
c3e92a6c 1815static int mov_read_ilst(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
51c15201
BC
1816{
1817 int ret;
1818 c->itunes_metadata = 1;
1819 ret = mov_read_default(c, pb, atom);
1820 c->itunes_metadata = 0;
1821 return ret;
1822}
1823
c3e92a6c 1824static int mov_read_meta(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
51c15201 1825{
df8843c6
BC
1826 while (atom.size > 8) {
1827 uint32_t tag = get_le32(pb);
1828 atom.size -= 4;
1829 if (tag == MKTAG('h','d','l','r')) {
1830 url_fseek(pb, -8, SEEK_CUR);
1831 atom.size += 8;
1832 return mov_read_default(c, pb, atom);
1833 }
1834 }
1835 return 0;
51c15201
BC
1836}
1837
c3e92a6c 1838static int mov_read_tkhd(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
5ca1d879 1839{
ec072669
JS
1840 int i;
1841 int width;
1842 int height;
1843 int64_t disp_transform[2];
1844 int display_matrix[3][2];
6a63ff19
BC
1845 AVStream *st;
1846 MOVStreamContext *sc;
1847 int version;
1848
1849 if (c->fc->nb_streams < 1)
1850 return 0;
1851 st = c->fc->streams[c->fc->nb_streams-1];
1852 sc = st->priv_data;
5ca1d879 1853
6a63ff19 1854 version = get_byte(pb);
23f08617 1855 get_be24(pb); /* flags */
5ca1d879
ZK
1856 /*
1857 MOV_TRACK_ENABLED 0x0001
1858 MOV_TRACK_IN_MOVIE 0x0002
1859 MOV_TRACK_IN_PREVIEW 0x0004
1860 MOV_TRACK_IN_POSTER 0x0008
1861 */
1862
1175561e
BC
1863 if (version == 1) {
1864 get_be64(pb);
1865 get_be64(pb);
1866 } else {
1867 get_be32(pb); /* creation time */
1868 get_be32(pb); /* modification time */
1869 }
5ca1d879
ZK
1870 st->id = (int)get_be32(pb); /* track id (NOT 0 !)*/
1871 get_be32(pb); /* reserved */
fcdd622c 1872
117a9190
BC
1873 /* highlevel (considering edits) duration in movie timebase */
1874 (version == 1) ? get_be64(pb) : get_be32(pb);
5ca1d879
ZK
1875 get_be32(pb); /* reserved */
1876 get_be32(pb); /* reserved */
1877
1878 get_be16(pb); /* layer */
1879 get_be16(pb); /* alternate group */
1880 get_be16(pb); /* volume */
1881 get_be16(pb); /* reserved */
1882
ec072669
JS
1883 //read in the display matrix (outlined in ISO 14496-12, Section 6.2.2)
1884 // they're kept in fixed point format through all calculations
1885 // ignore u,v,z b/c we don't need the scale factor to calc aspect ratio
1886 for (i = 0; i < 3; i++) {
1887 display_matrix[i][0] = get_be32(pb); // 16.16 fixed point
1888 display_matrix[i][1] = get_be32(pb); // 16.16 fixed point
1889 get_be32(pb); // 2.30 fixed point (not used)
1890 }
5ca1d879 1891
ec072669
JS
1892 width = get_be32(pb); // 16.16 fixed point track width
1893 height = get_be32(pb); // 16.16 fixed point track height
6cdbff63
DC
1894 sc->width = width >> 16;
1895 sc->height = height >> 16;
ec072669 1896
d862fce7 1897 // transform the display width/height according to the matrix
ec072669 1898 // skip this if the display matrix is the default identity matrix
d862fce7 1899 // or if it is rotating the picture, ex iPhone 3GS
ec072669
JS
1900 // to keep the same scale, use [width height 1<<16]
1901 if (width && height &&
d862fce7
BC
1902 ((display_matrix[0][0] != 65536 ||
1903 display_matrix[1][1] != 65536) &&
1904 !display_matrix[0][1] &&
1905 !display_matrix[1][0] &&
1906 !display_matrix[2][0] && !display_matrix[2][1])) {
ec072669
JS
1907 for (i = 0; i < 2; i++)
1908 disp_transform[i] =
1909 (int64_t) width * display_matrix[0][i] +
1910 (int64_t) height * display_matrix[1][i] +
1911 ((int64_t) display_matrix[2][i] << 16);
1912
1913 //sample aspect ratio is new width/height divided by old width/height
59729451 1914 st->sample_aspect_ratio = av_d2q(
ec072669
JS
1915 ((double) disp_transform[0] * height) /
1916 ((double) disp_transform[1] * width), INT_MAX);
1917 }
5ca1d879
ZK
1918 return 0;
1919}
1920
c3e92a6c 1921static int mov_read_tfhd(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
61aedb0f
BC
1922{
1923 MOVFragment *frag = &c->fragment;
1924 MOVTrackExt *trex = NULL;
1925 int flags, track_id, i;
1926
1927 get_byte(pb); /* version */
1928 flags = get_be24(pb);
1929
1930 track_id = get_be32(pb);
63581eb1 1931 if (!track_id)
61aedb0f
BC
1932 return -1;
1933 frag->track_id = track_id;
1934 for (i = 0; i < c->trex_count; i++)
1935 if (c->trex_data[i].track_id == frag->track_id) {
1936 trex = &c->trex_data[i];
1937 break;
1938 }
1939 if (!trex) {
1940 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding trex\n");
1941 return -1;
1942 }
1943
1944 if (flags & 0x01) frag->base_data_offset = get_be64(pb);
1945 else frag->base_data_offset = frag->moof_offset;
1946 if (flags & 0x02) frag->stsd_id = get_be32(pb);
1947 else frag->stsd_id = trex->stsd_id;
1948
1949 frag->duration = flags & 0x08 ? get_be32(pb) : trex->duration;
1950 frag->size = flags & 0x10 ? get_be32(pb) : trex->size;
1951 frag->flags = flags & 0x20 ? get_be32(pb) : trex->flags;
1952 dprintf(c->fc, "frag flags 0x%x\n", frag->flags);
1953 return 0;
1954}
1955
c3e92a6c 1956static int mov_read_trex(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
61aedb0f
BC
1957{
1958 MOVTrackExt *trex;
1959
1960 if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data))
1961 return -1;
0d8f0abf
BC
1962 trex = av_realloc(c->trex_data, (c->trex_count+1)*sizeof(*c->trex_data));
1963 if (!trex)
61aedb0f 1964 return AVERROR(ENOMEM);
0d8f0abf 1965 c->trex_data = trex;
61aedb0f
BC
1966 trex = &c->trex_data[c->trex_count++];
1967 get_byte(pb); /* version */
1968 get_be24(pb); /* flags */
1969 trex->track_id = get_be32(pb);
1970 trex->stsd_id = get_be32(pb);
1971 trex->duration = get_be32(pb);
1972 trex->size = get_be32(pb);
1973 trex->flags = get_be32(pb);
1974 return 0;
1975}
1976
c3e92a6c 1977static int mov_read_trun(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
61aedb0f
BC
1978{
1979 MOVFragment *frag = &c->fragment;
63581eb1 1980 AVStream *st = NULL;
44e43aab 1981 MOVStreamContext *sc;
61aedb0f
BC
1982 uint64_t offset;
1983 int64_t dts;
1984 int data_offset = 0;
1985 unsigned entries, first_sample_flags = frag->flags;
1986 int flags, distance, i;
1987
63581eb1
AC
1988 for (i = 0; i < c->fc->nb_streams; i++) {
1989 if (c->fc->streams[i]->id == frag->track_id) {
1990 st = c->fc->streams[i];
1991 break;
1992 }
1993 }
1994 if (!st) {
1995 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id);
44e43aab 1996 return -1;
63581eb1 1997 }
44e43aab 1998 sc = st->priv_data;
61aedb0f
BC
1999 if (sc->pseudo_stream_id+1 != frag->stsd_id)
2000 return 0;
61aedb0f
BC
2001 get_byte(pb); /* version */
2002 flags = get_be24(pb);
2003 entries = get_be32(pb);
2004 dprintf(c->fc, "flags 0x%x entries %d\n", flags, entries);
2005 if (flags & 0x001) data_offset = get_be32(pb);
2006 if (flags & 0x004) first_sample_flags = get_be32(pb);
2007 if (flags & 0x800) {
0d8f0abf 2008 MOVStts *ctts_data;
61aedb0f
BC
2009 if ((uint64_t)entries+sc->ctts_count >= UINT_MAX/sizeof(*sc->ctts_data))
2010 return -1;
0d8f0abf
BC
2011 ctts_data = av_realloc(sc->ctts_data,
2012 (entries+sc->ctts_count)*sizeof(*sc->ctts_data));
2013 if (!ctts_data)
61aedb0f 2014 return AVERROR(ENOMEM);
0d8f0abf 2015 sc->ctts_data = ctts_data;
61aedb0f
BC
2016 }
2017 dts = st->duration;
2018 offset = frag->base_data_offset + data_offset;
2019 distance = 0;
2020 dprintf(c->fc, "first sample flags 0x%x\n", first_sample_flags);
2021 for (i = 0; i < entries; i++) {
2022 unsigned sample_size = frag->size;
2023 int sample_flags = i ? frag->flags : first_sample_flags;
2024 unsigned sample_duration = frag->duration;
2025 int keyframe;
2026
2027 if (flags & 0x100) sample_duration = get_be32(pb);
2028 if (flags & 0x200) sample_size = get_be32(pb);
2029 if (flags & 0x400) sample_flags = get_be32(pb);
2030 if (flags & 0x800) {
2031 sc->ctts_data[sc->ctts_count].count = 1;
2032 sc->ctts_data[sc->ctts_count].duration = get_be32(pb);
2033 sc->ctts_count++;
2034 }
72415b2a 2035 if ((keyframe = st->codec->codec_type == AVMEDIA_TYPE_AUDIO ||
61aedb0f
BC
2036 (flags & 0x004 && !i && !sample_flags) || sample_flags & 0x2000000))
2037 distance = 0;
2038 av_add_index_entry(st, offset, dts, sample_size, distance,
2039 keyframe ? AVINDEX_KEYFRAME : 0);
2040 dprintf(c->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
2041 "size %d, distance %d, keyframe %d\n", st->index, sc->sample_count+i,
2042 offset, dts, sample_size, distance, keyframe);
2043 distance++;
bbe46bc4 2044 dts += sample_duration;
61aedb0f
BC
2045 offset += sample_size;
2046 }
2047 frag->moof_offset = offset;
61aedb0f
BC
2048 st->duration = dts;
2049 return 0;
2050}
2051
5ca1d879
ZK
2052/* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
2053/* like the files created with Adobe Premiere 5.0, for samples see */
2054/* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
c3e92a6c 2055static int mov_read_wide(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
5ca1d879
ZK
2056{
2057 int err;
5ca1d879 2058
5ca1d879
ZK
2059 if (atom.size < 8)
2060 return 0; /* continue */
2061 if (get_be32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
2062 url_fskip(pb, atom.size - 4);
2063 return 0;
2064 }
2065 atom.type = get_le32(pb);
5ca1d879 2066 atom.size -= 8;
1c126b4f 2067 if (atom.type != MKTAG('m','d','a','t')) {
5ca1d879
ZK
2068 url_fskip(pb, atom.size);
2069 return 0;
2070 }
2071 err = mov_read_mdat(c, pb, atom);
5ca1d879
ZK
2072 return err;
2073}
2074
c3e92a6c 2075static int mov_read_cmov(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
0147f198 2076{
b250f9c6 2077#if CONFIG_ZLIB
0147f198 2078 ByteIOContext ctx;
b6a17df4
ZK
2079 uint8_t *cmov_data;
2080 uint8_t *moov_data; /* uncompressed data */
0147f198 2081 long cmov_len, moov_len;
6f04eb1e 2082 int ret = -1;
b6a17df4 2083
0147f198 2084 get_be32(pb); /* dcom atom */
1c126b4f 2085 if (get_le32(pb) != MKTAG('d','c','o','m'))
0147f198 2086 return -1;
1c126b4f 2087 if (get_le32(pb) != MKTAG('z','l','i','b')) {
f3592353 2088 av_log(c->fc, AV_LOG_ERROR, "unknown compression for cmov atom !");
0147f198
FR
2089 return -1;
2090 }
2091 get_be32(pb); /* cmvd atom */
1c126b4f 2092 if (get_le32(pb) != MKTAG('c','m','v','d'))
0147f198
FR
2093 return -1;
2094 moov_len = get_be32(pb); /* uncompressed size */
5ca1d879 2095 cmov_len = atom.size - 6 * 4;
5cd62665 2096
9a630c25 2097 cmov_data = av_malloc(cmov_len);
0147f198 2098 if (!cmov_data)
0d8f0abf 2099 return AVERROR(ENOMEM);
9a630c25 2100 moov_data = av_malloc(moov_len);
0147f198
FR
2101 if (!moov_data) {
2102 av_free(cmov_data);
0d8f0abf 2103 return AVERROR(ENOMEM);
0147f198
FR
2104 }
2105 get_buffer(pb, cmov_data, cmov_len);
b6a17df4 2106 if(uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
6f04eb1e 2107 goto free_and_return;
942f3bb5 2108 if(init_put_byte(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
6f04eb1e 2109 goto free_and_return;
1c126b4f 2110 atom.type = MKTAG('m','o','o','v');
5ca1d879 2111 atom.size = moov_len;
9ed83b0a 2112#ifdef DEBUG
dbb4f00a 2113// { int fd = open("/tmp/uncompheader.mov", O_WRONLY | O_CREAT); write(fd, moov_data, moov_len); close(fd); }
9ed83b0a 2114#endif
5ca1d879 2115 ret = mov_read_default(c, &ctx, atom);
6f04eb1e 2116free_and_return:
0147f198
FR
2117 av_free(moov_data);
2118 av_free(cmov_data);
2119 return ret;
d966b2f0
BC
2120#else
2121 av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
2122 return -1;
0147f198 2123#endif
d966b2f0 2124}
0147f198 2125
baf25c9d 2126/* edit list atom */
c3e92a6c 2127static int mov_read_elst(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
baf25c9d 2128{
1c4bf2ec 2129 MOVStreamContext *sc;
e0977c80
BC
2130 int i, edit_count;
2131
1c4bf2ec
BC
2132 if (c->fc->nb_streams < 1)
2133 return 0;
2134 sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
2135
e0977c80 2136 get_byte(pb); /* version */
23f08617 2137 get_be24(pb); /* flags */
1975c52c 2138 edit_count = get_be32(pb); /* entries */
e0977c80 2139
53e099de
BC
2140 if((uint64_t)edit_count*12+8 > atom.size)
2141 return -1;
2142
e0977c80 2143 for(i=0; i<edit_count; i++){
d435e520 2144 int time;
2ac736a6 2145 int duration = get_be32(pb); /* Track duration */
d435e520 2146 time = get_be32(pb); /* Media time */
e0977c80 2147 get_be32(pb); /* Media rate */
2ac736a6
RD
2148 if (i == 0 && time >= -1) {
2149 sc->time_offset = time != -1 ? time : -duration;
a5929abe 2150 }
e0977c80 2151 }
baf2ffd3
BC
2152
2153 if(edit_count > 1)
2154 av_log(c->fc, AV_LOG_WARNING, "multiple edit list entries, "
2155 "a/v desync might occur, patch welcome\n");
2156
4c125b8f 2157 dprintf(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, edit_count);
e0977c80 2158 return 0;
baf25c9d
GC
2159}
2160
6cea494e 2161static const MOVParseTableEntry mov_default_parse_table[] = {
d4fdba0d 2162{ MKTAG('a','v','s','s'), mov_read_extradata },
1c126b4f
BC
2163{ MKTAG('c','o','6','4'), mov_read_stco },
2164{ MKTAG('c','t','t','s'), mov_read_ctts }, /* composition time to sample */
2165{ MKTAG('d','i','n','f'), mov_read_default },
2166{ MKTAG('d','r','e','f'), mov_read_dref },
2167{ MKTAG('e','d','t','s'), mov_read_default },
2168{ MKTAG('e','l','s','t'), mov_read_elst },
2169{ MKTAG('e','n','d','a'), mov_read_enda },
2170{ MKTAG('f','i','e','l'), mov_read_extradata },
2171{ MKTAG('f','t','y','p'), mov_read_ftyp },
2172{ MKTAG('g','l','b','l'), mov_read_glbl },
2173{ MKTAG('h','d','l','r'), mov_read_hdlr },
51c15201 2174{ MKTAG('i','l','s','t'), mov_read_ilst },
1c126b4f
BC
2175{ MKTAG('j','p','2','h'), mov_read_extradata },
2176{ MKTAG('m','d','a','t'), mov_read_mdat },
2177{ MKTAG('m','d','h','d'), mov_read_mdhd },
2178{ MKTAG('m','d','i','a'), mov_read_default },
51c15201 2179{ MKTAG('m','e','t','a'), mov_read_meta },
1c126b4f
BC
2180{ MKTAG('m','i','n','f'), mov_read_default },
2181{ MKTAG('m','o','o','f'), mov_read_moof },
2182{ MKTAG('m','o','o','v'), mov_read_moov },
2183{ MKTAG('m','v','e','x'), mov_read_default },
2184{ MKTAG('m','v','h','d'), mov_read_mvhd },
2185{ MKTAG('S','M','I',' '), mov_read_smi }, /* Sorenson extension ??? */
2186{ MKTAG('a','l','a','c'), mov_read_extradata }, /* alac specific atom */
2187{ MKTAG('a','v','c','C'), mov_read_glbl },
6da54074 2188{ MKTAG('p','a','s','p'), mov_read_pasp },
1c126b4f
BC
2189{ MKTAG('s','t','b','l'), mov_read_default },
2190{ MKTAG('s','t','c','o'), mov_read_stco },
171a3531 2191{ MKTAG('s','t','p','s'), mov_read_stps },
653d7aeb 2192{ MKTAG('s','t','r','f'), mov_read_strf },
1c126b4f
BC
2193{ MKTAG('s','t','s','c'), mov_read_stsc },
2194{ MKTAG('s','t','s','d'), mov_read_stsd }, /* sample description */
2195{ MKTAG('s','t','s','s'), mov_read_stss }, /* sync sample */
2196{ MKTAG('s','t','s','z'), mov_read_stsz }, /* sample size */
2197{ MKTAG('s','t','t','s'), mov_read_stts },
bd27eed6 2198{ MKTAG('s','t','z','2'), mov_read_stsz }, /* compact sample size */
1c126b4f
BC
2199{ MKTAG('t','k','h','d'), mov_read_tkhd }, /* track header */
2200{ MKTAG('t','f','h','d'), mov_read_tfhd }, /* track fragment header */
2201{ MKTAG('t','r','a','k'), mov_read_trak },
2202{ MKTAG('t','r','a','f'), mov_read_default },
2203{ MKTAG('t','r','e','x'), mov_read_trex },
2204{ MKTAG('t','r','u','n'), mov_read_trun },
86b0affd 2205{ MKTAG('u','d','t','a'), mov_read_default },
1c126b4f
BC
2206{ MKTAG('w','a','v','e'), mov_read_wave },
2207{ MKTAG('e','s','d','s'), mov_read_esds },
2208{ MKTAG('w','i','d','e'), mov_read_wide }, /* place holder */
2209{ MKTAG('c','m','o','v'), mov_read_cmov },
bcfe2ba0 2210{ 0, NULL }
6cea494e
ZK
2211};
2212
c9a65ca8
FB
2213static int mov_probe(AVProbeData *p)
2214{
0e7eed09
FB
2215 unsigned int offset;
2216 uint32_t tag;
2497479f 2217 int score = 0;
3ffe3793 2218
c9a65ca8 2219 /* check file header */
0e7eed09
FB
2220 offset = 0;
2221 for(;;) {
2222 /* ignore invalid offset */
2223 if ((offset + 8) > (unsigned int)p->buf_size)
2497479f 2224 return score;
fead30d4 2225 tag = AV_RL32(p->buf + offset + 4);
0e7eed09 2226 switch(tag) {
2497479f 2227 /* check for obvious tags */
1c126b4f
BC
2228 case MKTAG('j','P',' ',' '): /* jpeg 2000 signature */
2229 case MKTAG('m','o','o','v'):
2230 case MKTAG('m','d','a','t'):
2231 case MKTAG('p','n','o','t'): /* detect movs with preview pics like ew.mov and april.mov */
2232 case MKTAG('u','d','t','a'): /* Packet Video PVAuthor adds this and a lot of more junk */
40e7aaa3 2233 case MKTAG('f','t','y','p'):
3ffe3793 2234 return AVPROBE_SCORE_MAX;
2497479f 2235 /* those are more common words, so rate then a bit less */
1c126b4f
BC
2236 case MKTAG('e','d','i','w'): /* xdcam files have reverted first tags */
2237 case MKTAG('w','i','d','e'):
2238 case MKTAG('f','r','e','e'):
2239 case MKTAG('j','u','n','k'):
2240 case MKTAG('p','i','c','t'):
2497479f 2241 return AVPROBE_SCORE_MAX - 5;
5469b788 2242 case MKTAG(0x82,0x82,0x7f,0x7d):
1c126b4f
BC
2243 case MKTAG('s','k','i','p'):
2244 case MKTAG('u','u','i','d'):
2245 case MKTAG('p','r','f','l'):
fead30d4 2246 offset = AV_RB32(p->buf+offset) + offset;
2497479f
FR
2247 /* if we only find those cause probedata is too small at least rate them */
2248 score = AVPROBE_SCORE_MAX - 50;
0e7eed09
FB
2249 break;
2250 default:
2251 /* unrecognized tag */
2497479f 2252 return score;
0e7eed09 2253 }
3ffe3793 2254 }
2497479f 2255 return score;
c9a65ca8
FB
2256}
2257
a266644f 2258static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
6cea494e 2259{
e4141433 2260 MOVContext *mov = s->priv_data;
899681cd 2261 ByteIOContext *pb = s->pb;
f9900374 2262 int err;
cb41b2b6 2263 MOVAtom atom = { 0 };
6cea494e 2264
6cea494e 2265 mov->fc = s;
117a9190
BC
2266 /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
2267 if(!url_is_streamed(pb))
bb270c08 2268 atom.size = url_fsize(pb);
6cea494e 2269 else
fa22ca22 2270 atom.size = INT64_MAX;
6cea494e 2271
6cea494e 2272 /* check MOV header */
612b5cbb
BC
2273 if ((err = mov_read_default(mov, pb, atom)) < 0) {
2274 av_log(s, AV_LOG_ERROR, "error reading header: %d\n", err);
2275 return err;
2276 }
2277 if (!mov->found_moov) {
2278 av_log(s, AV_LOG_ERROR, "moov atom not found\n");
bb270c08 2279 return -1;
6cea494e 2280 }
0265fe81 2281 dprintf(mov->fc, "on_parse_exit_offset=%lld\n", url_ftell(pb));
4e5ef14f 2282
6cea494e
ZK
2283 return 0;
2284}
2285
5dc5c43b 2286static AVIndexEntry *mov_find_next_sample(AVFormatContext *s, AVStream **st)
6cea494e 2287{
5dc5c43b 2288 AVIndexEntry *sample = NULL;
86d8602f 2289 int64_t best_dts = INT64_MAX;
5dc5c43b 2290 int i;
11f16b66 2291 for (i = 0; i < s->nb_streams; i++) {
69fc436c
RD
2292 AVStream *avst = s->streams[i];
2293 MOVStreamContext *msc = avst->priv_data;
3fe4d5d4 2294 if (msc->pb && msc->current_sample < avst->nb_index_entries) {
69fc436c 2295 AVIndexEntry *current_sample = &avst->index_entries[msc->current_sample];
bbe46bc4 2296 int64_t dts = av_rescale(current_sample->timestamp, AV_TIME_BASE, msc->time_scale);
1c02d96f 2297 dprintf(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
687f35f3
BC
2298 if (!sample || (url_is_streamed(s->pb) && current_sample->pos < sample->pos) ||
2299 (!url_is_streamed(s->pb) &&
221e21b7 2300 ((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb &&
687f35f3 2301 ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
221e21b7 2302 (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) {
b72708f8
BC
2303 sample = current_sample;
2304 best_dts = dts;
5dc5c43b 2305 *st = avst;
86d8602f 2306 }
6cea494e 2307 }
6cea494e 2308 }
5dc5c43b
RD
2309 return sample;
2310}
2311
2312static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
2313{
2314 MOVContext *mov = s->priv_data;
2315 MOVStreamContext *sc;
2316 AVIndexEntry *sample;
2317 AVStream *st = NULL;
2318 int ret;
2319 retry:
2320 sample = mov_find_next_sample(s, &st);
433aeb62
BC
2321 if (!sample) {
2322 mov->found_mdat = 0;
2323 if (!url_is_streamed(s->pb) ||
cb41b2b6 2324 mov_read_default(mov, s->pb, (MOVAtom){ 0, INT64_MAX }) < 0 ||
433aeb62 2325 url_feof(s->pb))
350f2c2c 2326 return AVERROR_EOF;
433aeb62
BC
2327 dprintf(s, "read fragments, offset 0x%llx\n", url_ftell(s->pb));
2328 goto retry;
2329 }
69fc436c 2330 sc = st->priv_data;
b72708f8
BC
2331 /* must be done just before reading, to avoid infinite loop on sample */
2332 sc->current_sample++;
3fe4d5d4
RD
2333
2334 if (st->discard != AVDISCARD_ALL) {
e1c1b0ff
RD
2335 if (url_fseek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
2336 av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
2337 sc->ffindex, sample->pos);
2338 return -1;
2339 }
2340 ret = av_get_packet(sc->pb, pkt, sample->size);
a2f38511
RD
2341 if (ret < 0)
2342 return ret;
e1c1b0ff
RD
2343#if CONFIG_DV_DEMUXER
2344 if (mov->dv_demux && sc->dv_audio_container) {
2345 dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size);
2346 av_free(pkt->data);
2347 pkt->size = 0;
2348 ret = dv_get_packet(mov->dv_demux, pkt);
2349 if (ret < 0)
2350 return ret;
2351 }
312954f0 2352#endif
3fe4d5d4
RD
2353 }
2354
b72708f8
BC
2355 pkt->stream_index = sc->ffindex;
2356 pkt->dts = sample->timestamp;
2357 if (sc->ctts_data) {
bbe46bc4 2358 pkt->pts = pkt->dts + sc->dts_shift + sc->ctts_data[sc->ctts_index].duration;
b72708f8 2359 /* update ctts context */
a234e38d
BC
2360 sc->ctts_sample++;
2361 if (sc->ctts_index < sc->ctts_count &&
2362 sc->ctts_data[sc->ctts_index].count == sc->ctts_sample) {
2363 sc->ctts_index++;
2364 sc->ctts_sample = 0;
b565ea09 2365 }
0c5f76f7
BC
2366 if (sc->wrong_dts)
2367 pkt->dts = AV_NOPTS_VALUE;
b72708f8 2368 } else {
f0f2218d 2369 int64_t next_dts = (sc->current_sample < st->nb_index_entries) ?
e8430214
HG
2370 st->index_entries[sc->current_sample].timestamp : st->duration;
2371 pkt->duration = next_dts - pkt->dts;
b72708f8 2372 pkt->pts = pkt->dts;
b565ea09 2373 }
3fe4d5d4
RD
2374 if (st->discard == AVDISCARD_ALL)
2375 goto retry;
cc947f04 2376 pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? AV_PKT_FLAG_KEY : 0;
b72708f8 2377 pkt->pos = sample->pos;
29c90869
BC
2378 dprintf(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n",
2379 pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
b72708f8
BC
2380 return 0;
2381}
3ffe3793 2382
e26df9eb 2383static int mov_seek_stream(AVFormatContext *s, AVStream *st, int64_t timestamp, int flags)
b72708f8
BC
2384{
2385 MOVStreamContext *sc = st->priv_data;
2386 int sample, time_sample;
2387 int i;
115329f1 2388
b72708f8 2389 sample = av_index_search_timestamp(st, timestamp, flags);
e26df9eb 2390 dprintf(s, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
b72708f8
BC
2391 if (sample < 0) /* not sure what to do */
2392 return -1;
2393 sc->current_sample = sample;
e26df9eb 2394 dprintf(s, "stream %d, found sample %d\n", st->index, sc->current_sample);
b72708f8
BC
2395 /* adjust ctts index */
2396 if (sc->ctts_data) {
2397 time_sample = 0;
2398 for (i = 0; i < sc->ctts_count; i++) {
54a5c719
BC
2399 int next = time_sample + sc->ctts_data[i].count;
2400 if (next > sc->current_sample) {
a234e38d
BC
2401 sc->ctts_index = i;
2402 sc->ctts_sample = sc->current_sample - time_sample;
b72708f8 2403 break;
115329f1 2404 }
54a5c719 2405 time_sample = next;
247d56f5 2406 }
247d56f5 2407 }
b72708f8 2408 return sample;
6cea494e
ZK
2409}
2410
961e0ccd 2411static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
baf25c9d 2412{
b72708f8
BC
2413 AVStream *st;
2414 int64_t seek_timestamp, timestamp;
2415 int sample;
2416 int i;
baf25c9d 2417
b72708f8 2418 if (stream_index >= s->nb_streams)
baf25c9d 2419 return -1;
8dc81a45
BC
2420 if (sample_time < 0)
2421 sample_time = 0;
baf25c9d 2422
b72708f8 2423 st = s->streams[stream_index];
e26df9eb 2424 sample = mov_seek_stream(s, st, sample_time, flags);
b72708f8 2425 if (sample < 0)
baf25c9d 2426 return -1;
baf25c9d 2427
b72708f8
BC
2428 /* adjust seek timestamp to found sample timestamp */
2429 seek_timestamp = st->index_entries[sample].timestamp;
baf25c9d 2430
b72708f8
BC
2431 for (i = 0; i < s->nb_streams; i++) {
2432 st = s->streams[i];
3fe4d5d4 2433 if (stream_index == i)
b72708f8 2434 continue;
baf25c9d 2435
b72708f8 2436 timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
e26df9eb 2437 mov_seek_stream(s, st, timestamp, flags);
115329f1 2438 }
baf25c9d
GC
2439 return 0;
2440}
baf25c9d 2441
a266644f 2442static int mov_read_close(AVFormatContext *s)
6cea494e 2443{
e4141433 2444 MOVContext *mov = s->priv_data;
6c00a9de
BC
2445 int i, j;
2446
2447 for (i = 0; i < s->nb_streams; i++) {
e49da827
BC
2448 AVStream *st = s->streams[i];
2449 MOVStreamContext *sc = st->priv_data;
6c00a9de 2450
7c622eed 2451 av_freep(&sc->ctts_data);
adeb9071 2452 for (j = 0; j < sc->drefs_count; j++) {
221e21b7 2453 av_freep(&sc->drefs[j].path);
adeb9071
BC
2454 av_freep(&sc->drefs[j].dir);
2455 }
221e21b7
BC
2456 av_freep(&sc->drefs);
2457 if (sc->pb && sc->pb != s->pb)
2458 url_fclose(sc->pb);
e49da827
BC
2459
2460 av_freep(&st->codec->palctrl);
4440b118 2461 }
6c00a9de
BC
2462
2463 if (mov->dv_demux) {
2464 for(i = 0; i < mov->dv_fctx->nb_streams; i++) {
b60c0454
BC
2465 av_freep(&mov->dv_fctx->streams[i]->codec);
2466 av_freep(&mov->dv_fctx->streams[i]);
2467 }
2468 av_freep(&mov->dv_fctx);
2469 av_freep(&mov->dv_demux);
2470 }
6c00a9de 2471
61aedb0f 2472 av_freep(&mov->trex_data);
6c00a9de 2473
6cea494e
ZK
2474 return 0;
2475}
2476
ff70e601 2477AVInputFormat mov_demuxer = {
fc5188f3 2478 "mov,mp4,m4a,3gp,3g2,mj2",
bde15e74 2479 NULL_IF_CONFIG_SMALL("QuickTime/MPEG-4/Motion JPEG 2000 format"),
c9a65ca8
FB
2480 sizeof(MOVContext),
2481 mov_probe,
6cea494e
ZK
2482 mov_read_header,
2483 mov_read_packet,
2484 mov_read_close,
baf25c9d 2485 mov_read_seek,
6cea494e 2486};