perform sanity check on number of audio channels in avcodec_open()
[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
ZK
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
ZK
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);
6cea494e
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
0fb44a4e
BC
96static int mov_read_udta_string(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
97{
98#ifdef MOV_EXPORT_ALL_METADATA
99 char tmp_key[5];
100#endif
101 char str[1024], key2[16], language[4] = {0};
102 const char *key = NULL;
103 uint16_t str_size;
c6026e43 104 int (*parse)(MOVContext*, ByteIOContext*, unsigned) = NULL;
0fb44a4e
BC
105
106 switch (atom.type) {
107 case MKTAG(0xa9,'n','a','m'): key = "title"; break;
108 case MKTAG(0xa9,'a','u','t'):
109 case MKTAG(0xa9,'A','R','T'):
110 case MKTAG(0xa9,'w','r','t'): key = "author"; break;
111 case MKTAG(0xa9,'c','p','y'): key = "copyright"; break;
112 case MKTAG(0xa9,'c','m','t'):
113 case MKTAG(0xa9,'i','n','f'): key = "comment"; break;
114 case MKTAG(0xa9,'a','l','b'): key = "album"; break;
115 case MKTAG(0xa9,'d','a','y'): key = "year"; break;
116 case MKTAG(0xa9,'g','e','n'): key = "genre"; break;
117 case MKTAG(0xa9,'t','o','o'):
118 case MKTAG(0xa9,'e','n','c'): key = "muxer"; break;
c6026e43
BC
119 case MKTAG( 't','r','k','n'): key = "track";
120 parse = mov_metadata_trkn; break;
0fb44a4e
BC
121 }
122
123 if (c->itunes_metadata && atom.size > 8) {
124 int data_size = get_be32(pb);
125 int tag = get_le32(pb);
126 if (tag == MKTAG('d','a','t','a')) {
127 get_be32(pb); // type
128 get_be32(pb); // unknown
129 str_size = data_size - 16;
130 atom.size -= 16;
131 } else return 0;
132 } else if (atom.size > 4 && key && !c->itunes_metadata) {
133 str_size = get_be16(pb); // string length
134 ff_mov_lang_to_iso639(get_be16(pb), language);
135 atom.size -= 4;
136 } else
137 str_size = atom.size;
138
139#ifdef MOV_EXPORT_ALL_METADATA
140 if (!key) {
141 snprintf(tmp_key, 5, "%.4s", (char*)&atom.type);
142 key = tmp_key;
143 }
144#endif
145
146 if (!key)
147 return 0;
148 if (atom.size < 0)
149 return -1;
150
151 str_size = FFMIN3(sizeof(str)-1, str_size, atom.size);
c6026e43
BC
152
153 if (parse)
154 parse(c, pb, str_size);
155 else {
f584386d
BC
156 get_buffer(pb, str, str_size);
157 str[str_size] = 0;
158 av_metadata_set(&c->fc->metadata, key, str);
159 if (*language && strcmp(language, "und")) {
160 snprintf(key2, sizeof(key2), "%s-%s", key, language);
161 av_metadata_set(&c->fc->metadata, key2, str);
162 }
c6026e43 163 }
0fb44a4e
BC
164#ifdef DEBUG_METADATA
165 av_log(c->fc, AV_LOG_DEBUG, "lang \"%3s\" ", language);
166 av_log(c->fc, AV_LOG_DEBUG, "tag \"%s\" value \"%s\" atom \"%.4s\" %d %lld\n",
167 key, str, (char*)&atom.type, str_size, atom.size);
168#endif
169
170 return 0;
171}
873358e5 172
c3e92a6c 173static int mov_read_default(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
6cea494e 174{
b6a17df4 175 int64_t total_size = 0;
c3e92a6c 176 MOVAtom a;
6cea494e
ZK
177 int i;
178 int err = 0;
5ca1d879 179
5ca1d879 180 a.offset = atom.offset;
6cea494e 181
9ed83b0a 182 if (atom.size < 0)
fa22ca22 183 atom.size = INT64_MAX;
5ca1d879 184 while(((total_size + 8) < atom.size) && !url_feof(pb) && !err) {
873358e5 185 int (*parse)(MOVContext*, ByteIOContext*, MOVAtom) = NULL;
bb270c08 186 a.size = atom.size;
bcfe2ba0 187 a.type=0;
5ca1d879 188 if(atom.size >= 8) {
bb270c08 189 a.size = get_be32(pb);
5ca1d879 190 a.type = get_le32(pb);
6cea494e 191 }
bb270c08 192 total_size += 8;
5ca1d879 193 a.offset += 8;
29c90869
BC
194 dprintf(c->fc, "type: %08x %.4s sz: %"PRIx64" %"PRIx64" %"PRIx64"\n",
195 a.type, (char*)&a.type, a.size, atom.size, total_size);
5ca1d879 196 if (a.size == 1) { /* 64 bit extended size */
bb270c08 197 a.size = get_be64(pb) - 8;
5ca1d879
ZK
198 a.offset += 8;
199 total_size += 8;
6cea494e 200 }
bb270c08
DB
201 if (a.size == 0) {
202 a.size = atom.size - total_size;
203 if (a.size <= 8)
5cd62665 204 break;
bb270c08 205 }
bb270c08 206 a.size -= 8;
8622613d 207 if(a.size < 0)
568e18b1 208 break;
3d2308b0 209 a.size = FFMIN(a.size, atom.size - total_size);
115329f1 210
873358e5
BC
211 for (i = 0; mov_default_parse_table[i].type; i++)
212 if (mov_default_parse_table[i].type == a.type) {
213 parse = mov_default_parse_table[i].parse;
214 break;
215 }
11979c46 216
873358e5
BC
217 // container is user data
218 if (!parse && (atom.type == MKTAG('u','d','t','a') ||
219 atom.type == MKTAG('i','l','s','t')))
220 parse = mov_read_udta_string;
221
222 if (!parse) { /* skip leaf atoms data */
5ca1d879 223 url_fskip(pb, a.size);
bb270c08 224 } else {
bc5c918e 225 int64_t start_pos = url_ftell(pb);
5c72cad8 226 int64_t left;
873358e5 227 err = parse(c, pb, a);
db3ee6cc 228 if (url_is_streamed(pb) && c->found_moov && c->found_mdat)
687f35f3 229 break;
5c72cad8
BC
230 left = a.size - url_ftell(pb) + start_pos;
231 if (left > 0) /* skip garbage at atom end */
232 url_fskip(pb, left);
bb270c08 233 }
6cea494e 234
bb270c08 235 a.offset += a.size;
5ca1d879 236 total_size += a.size;
6cea494e
ZK
237 }
238
9ce84dd8 239 if (!err && total_size < atom.size && atom.size < 0x7ffff)
5ca1d879 240 url_fskip(pb, atom.size - total_size);
5cd62665 241
6cea494e
ZK
242 return err;
243}
244
c3e92a6c 245static int mov_read_dref(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
221e21b7 246{
6a63ff19
BC
247 AVStream *st;
248 MOVStreamContext *sc;
221e21b7
BC
249 int entries, i, j;
250
6a63ff19
BC
251 if (c->fc->nb_streams < 1)
252 return 0;
253 st = c->fc->streams[c->fc->nb_streams-1];
254 sc = st->priv_data;
255
221e21b7
BC
256 get_be32(pb); // version + flags
257 entries = get_be32(pb);
258 if (entries >= UINT_MAX / sizeof(*sc->drefs))
259 return -1;
221e21b7 260 sc->drefs = av_mallocz(entries * sizeof(*sc->drefs));
0d8f0abf
BC
261 if (!sc->drefs)
262 return AVERROR(ENOMEM);
263 sc->drefs_count = entries;
221e21b7
BC
264
265 for (i = 0; i < sc->drefs_count; i++) {
c3e92a6c 266 MOVDref *dref = &sc->drefs[i];
221e21b7 267 uint32_t size = get_be32(pb);
bc5c918e 268 int64_t next = url_ftell(pb) + size - 4;
221e21b7
BC
269
270 dref->type = get_le32(pb);
271 get_be32(pb); // version + flags
272 dprintf(c->fc, "type %.4s size %d\n", (char*)&dref->type, size);
273
274 if (dref->type == MKTAG('a','l','i','s') && size > 150) {
275 /* macintosh alias record */
276 uint16_t volume_len, len;
277 char volume[28];
278 int16_t type;
279
280 url_fskip(pb, 10);
281
282 volume_len = get_byte(pb);
283 volume_len = FFMIN(volume_len, 27);
284 get_buffer(pb, volume, 27);
285 volume[volume_len] = 0;
286 av_log(c->fc, AV_LOG_DEBUG, "volume %s, len %d\n", volume, volume_len);
287
288 url_fskip(pb, 112);
289
290 for (type = 0; type != -1 && url_ftell(pb) < next; ) {
291 type = get_be16(pb);
292 len = get_be16(pb);
293 av_log(c->fc, AV_LOG_DEBUG, "type %d, len %d\n", type, len);
294 if (len&1)
295 len += 1;
296 if (type == 2) { // absolute path
dbb37657 297 av_free(dref->path);
221e21b7 298 dref->path = av_mallocz(len+1);
2f4568e5
BC
299 if (!dref->path)
300 return AVERROR(ENOMEM);
221e21b7 301 get_buffer(pb, dref->path, len);
dbb7cbf2 302 if (len > volume_len && !strncmp(dref->path, volume, volume_len)) {
221e21b7
BC
303 len -= volume_len;
304 memmove(dref->path, dref->path+volume_len, len);
305 dref->path[len] = 0;
306 }
307 for (j = 0; j < len; j++)
308 if (dref->path[j] == ':')
309 dref->path[j] = '/';
310 av_log(c->fc, AV_LOG_DEBUG, "path %s\n", dref->path);
311 } else
312 url_fskip(pb, len);
313 }
314 }
315 url_fseek(pb, next, SEEK_SET);
316 }
317 return 0;
318}
319
c3e92a6c 320static int mov_read_hdlr(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
6cea494e 321{
fefe43ff 322 AVStream *st;
0c1a9eda 323 uint32_t type;
0c1a9eda 324 uint32_t ctype;
b6a17df4 325
fefe43ff
AC
326 if (c->fc->nb_streams < 1) // meta before first trak
327 return 0;
328
329 st = c->fc->streams[c->fc->nb_streams-1];
330
6cea494e 331 get_byte(pb); /* version */
23f08617 332 get_be24(pb); /* flags */
6cea494e
ZK
333
334 /* component type */
335 ctype = get_le32(pb);
336 type = get_le32(pb); /* component subtype */
337
9bf1b268
BC
338 dprintf(c->fc, "ctype= %.4s (0x%08x)\n", (char*)&ctype, ctype);
339 dprintf(c->fc, "stype= %.4s\n", (char*)&type);
2229a5c6 340
37ffe34b 341 if (type == MKTAG('v','i','d','e'))
73920f07 342 st->codec->codec_type = CODEC_TYPE_VIDEO;
1c126b4f 343 else if(type == MKTAG('s','o','u','n'))
73920f07 344 st->codec->codec_type = CODEC_TYPE_AUDIO;
1c126b4f 345 else if(type == MKTAG('m','1','a',' '))
95a07973 346 st->codec->codec_id = CODEC_ID_MP2;
f05783c2 347 else if(type == MKTAG('s','u','b','p'))
8cb97693 348 st->codec->codec_type = CODEC_TYPE_SUBTITLE;
f05783c2 349
6cea494e
ZK
350 get_be32(pb); /* component manufacture */
351 get_be32(pb); /* component flags */
352 get_be32(pb); /* component flags mask */
353
5ca1d879 354 if(atom.size <= 24)
6cea494e 355 return 0; /* nothing left to read */
5cd62665 356
3c13647a 357 url_fskip(pb, atom.size - (url_ftell(pb) - atom.offset));
6cea494e
ZK
358 return 0;
359}
360
9e40addd 361static int mp4_read_descr_len(ByteIOContext *pb)
0e7eed09 362{
5cd62665 363 int len = 0;
5ca1d879
ZK
364 int count = 4;
365 while (count--) {
5cd62665 366 int c = get_byte(pb);
bb270c08
DB
367 len = (len << 7) | (c & 0x7f);
368 if (!(c & 0x80))
369 break;
0e7eed09
FB
370 }
371 return len;
372}
373
9e40addd 374static int mp4_read_descr(MOVContext *c, ByteIOContext *pb, int *tag)
0e7eed09
FB
375{
376 int len;
377 *tag = get_byte(pb);
9e40addd 378 len = mp4_read_descr_len(pb);
318c5e05 379 dprintf(c->fc, "MPEG4 description: tag=0x%02x len=%d\n", *tag, len);
0e7eed09
FB
380 return len;
381}
382
0b07ac42
BC
383#define MP4ESDescrTag 0x03
384#define MP4DecConfigDescrTag 0x04
385#define MP4DecSpecificDescrTag 0x05
386
1dec3994 387static const AVCodecTag mp4_audio_types[] = {
5c3d507f
AC
388 { CODEC_ID_MP3ON4, AOT_PS }, /* old mp3on4 draft */
389 { CODEC_ID_MP3ON4, AOT_L1 }, /* layer 1 */
390 { CODEC_ID_MP3ON4, AOT_L2 }, /* layer 2 */
391 { CODEC_ID_MP3ON4, AOT_L3 }, /* layer 3 */
b24bbbb4 392 { CODEC_ID_MP4ALS, AOT_ALS }, /* MPEG-4 ALS */
5c3d507f 393 { CODEC_ID_NONE, AOT_NULL },
1dec3994
BC
394};
395
c3e92a6c 396static int mov_read_esds(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
5cd62665 397{
6a63ff19 398 AVStream *st;
5cd62665 399 int tag, len;
b6a17df4 400
6a63ff19
BC
401 if (c->fc->nb_streams < 1)
402 return 0;
403 st = c->fc->streams[c->fc->nb_streams-1];
404
5cd62665 405 get_be32(pb); /* version + flags */
9e40addd 406 len = mp4_read_descr(c, pb, &tag);
5cd62665 407 if (tag == MP4ESDescrTag) {
bb270c08
DB
408 get_be16(pb); /* ID */
409 get_byte(pb); /* priority */
5cd62665 410 } else
bb270c08 411 get_be16(pb); /* ID */
5cd62665 412
9e40addd 413 len = mp4_read_descr(c, pb, &tag);
5cd62665 414 if (tag == MP4DecConfigDescrTag) {
0b07ac42
BC
415 int object_type_id = get_byte(pb);
416 get_byte(pb); /* stream type */
417 get_be24(pb); /* buffer size db */
418 get_be32(pb); /* max bitrate */
419 get_be32(pb); /* avg bitrate */
420
1a40491e 421 st->codec->codec_id= ff_codec_get_id(ff_mp4_obj_type, object_type_id);
0b07ac42 422 dprintf(c->fc, "esds object type id %d\n", object_type_id);
9e40addd 423 len = mp4_read_descr(c, pb, &tag);
bb270c08 424 if (tag == MP4DecSpecificDescrTag) {
318c5e05 425 dprintf(c->fc, "Specific MPEG4 header len=%d\n", len);
852859ff
BC
426 if((uint64_t)len > (1<<30))
427 return -1;
9a630c25 428 st->codec->extradata = av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
b014dd76
BC
429 if (!st->codec->extradata)
430 return AVERROR(ENOMEM);
17871a02
BC
431 get_buffer(pb, st->codec->extradata, len);
432 st->codec->extradata_size = len;
1dec3994
BC
433 if (st->codec->codec_id == CODEC_ID_AAC) {
434 MPEG4AudioConfig cfg;
435 ff_mpeg4audio_get_config(&cfg, st->codec->extradata,
436 st->codec->extradata_size);
391872e4 437 if (cfg.chan_config > 7)
45a97d30
BC
438 return -1;
439 st->codec->channels = ff_mpeg4audio_channels[cfg.chan_config];
440 if (cfg.object_type == 29 && cfg.sampling_index < 3) // old mp3on4
441 st->codec->sample_rate = ff_mpa_freq_tab[cfg.sampling_index];
442 else
443 st->codec->sample_rate = cfg.sample_rate; // ext sample rate ?
444 dprintf(c->fc, "mp4a config channels %d obj %d ext obj %d "
445 "sample rate %d ext sample rate %d\n", st->codec->channels,
446 cfg.object_type, cfg.ext_object_type,
447 cfg.sample_rate, cfg.ext_sample_rate);
1a40491e
DV
448 if (!(st->codec->codec_id = ff_codec_get_id(mp4_audio_types,
449 cfg.object_type)))
1dec3994 450 st->codec->codec_id = CODEC_ID_AAC;
17871a02 451 }
bb270c08 452 }
5cd62665 453 }
5cd62665
ZK
454 return 0;
455}
456
6da54074
BC
457static int mov_read_pasp(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
458{
459 const int num = get_be32(pb);
460 const int den = get_be32(pb);
6a63ff19
BC
461 AVStream *st;
462
463 if (c->fc->nb_streams < 1)
464 return 0;
465 st = c->fc->streams[c->fc->nb_streams-1];
466
6da54074 467 if (den != 0) {
f53ee312
BC
468 if ((st->sample_aspect_ratio.den != 1 || st->sample_aspect_ratio.num) && // default
469 (den != st->sample_aspect_ratio.den || num != st->sample_aspect_ratio.num))
6da54074 470 av_log(c->fc, AV_LOG_WARNING,
f53ee312
BC
471 "sample aspect ratio already set to %d:%d, overriding by 'pasp' atom\n",
472 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den);
6da54074
BC
473 st->sample_aspect_ratio.num = num;
474 st->sample_aspect_ratio.den = den;
475 }
476 return 0;
477}
478
5ca1d879 479/* this atom contains actual media data */
c3e92a6c 480static int mov_read_mdat(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
6cea494e 481{
5ca1d879
ZK
482 if(atom.size == 0) /* wrong one (MP4) */
483 return 0;
484 c->found_mdat=1;
5ca1d879
ZK
485 return 0; /* now go for moov */
486}
487
c3e92a6c 488static int mov_read_ftyp(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
4ea28253
BC
489{
490 uint32_t type = get_le32(pb);
491
152e9a43
BC
492 if (type != MKTAG('q','t',' ',' '))
493 c->isom = 1;
a512446e 494 av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
4ea28253
BC
495 get_be32(pb); /* minor version */
496 url_fskip(pb, atom.size - 8);
497 return 0;
498}
499
5ca1d879 500/* this atom should contain all header atoms */
c3e92a6c 501static int mov_read_moov(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
5ca1d879 502{
9cf0419b
PI
503 if (mov_read_default(c, pb, atom) < 0)
504 return -1;
5ca1d879
ZK
505 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
506 /* so we don't parse the whole file if over a network */
507 c->found_moov=1;
5ca1d879
ZK
508 return 0; /* now go for mdat */
509}
510
c3e92a6c 511static int mov_read_moof(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
61aedb0f
BC
512{
513 c->fragment.moof_offset = url_ftell(pb) - 8;
514 dprintf(c->fc, "moof offset %llx\n", c->fragment.moof_offset);
515 return mov_read_default(c, pb, atom);
516}
5ca1d879 517
c3e92a6c 518static int mov_read_mdhd(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
5ca1d879 519{
6a63ff19
BC
520 AVStream *st;
521 MOVStreamContext *sc;
522 int version;
49674dd0 523 char language[4] = {0};
dce25564 524 unsigned lang;
5ca1d879 525
6a63ff19
BC
526 if (c->fc->nb_streams < 1)
527 return 0;
528 st = c->fc->streams[c->fc->nb_streams-1];
529 sc = st->priv_data;
530
531 version = get_byte(pb);
b9a87c4d 532 if (version > 1)
7e627332 533 return -1; /* unsupported */
5ca1d879 534
23f08617 535 get_be24(pb); /* flags */
f444b977
BC
536 if (version == 1) {
537 get_be64(pb);
538 get_be64(pb);
539 } else {
540 get_be32(pb); /* creation time */
541 get_be32(pb); /* modification time */
542 }
5ca1d879 543
f444b977
BC
544 sc->time_scale = get_be32(pb);
545 st->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
5ca1d879 546
b9a87c4d 547 lang = get_be16(pb); /* language */
49674dd0
AJ
548 if (ff_mov_lang_to_iso639(lang, language))
549 av_metadata_set(&st->metadata, "language", language);
5ca1d879
ZK
550 get_be16(pb); /* quality */
551
552 return 0;
553}
554
c3e92a6c 555static int mov_read_mvhd(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
5ca1d879 556{
1175561e 557 int version = get_byte(pb); /* version */
23f08617 558 get_be24(pb); /* flags */
5ca1d879 559
1175561e
BC
560 if (version == 1) {
561 get_be64(pb);
562 get_be64(pb);
563 } else {
564 get_be32(pb); /* creation time */
565 get_be32(pb); /* modification time */
566 }
5ca1d879 567 c->time_scale = get_be32(pb); /* time scale */
f8c18cd7
BC
568
569 dprintf(c->fc, "time scale = %i\n", c->time_scale);
570
1175561e 571 c->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
5ca1d879
ZK
572 get_be32(pb); /* preferred scale */
573
574 get_be16(pb); /* preferred volume */
575
576 url_fskip(pb, 10); /* reserved */
577
578 url_fskip(pb, 36); /* display matrix */
579
580 get_be32(pb); /* preview time */
581 get_be32(pb); /* preview duration */
582 get_be32(pb); /* poster time */
583 get_be32(pb); /* selection time */
584 get_be32(pb); /* selection duration */
585 get_be32(pb); /* current time */
586 get_be32(pb); /* next track ID */
587
588 return 0;
589}
590
c3e92a6c 591static int mov_read_smi(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
9ed83b0a 592{
6a63ff19
BC
593 AVStream *st;
594
595 if (c->fc->nb_streams < 1)
596 return 0;
597 st = c->fc->streams[c->fc->nb_streams-1];
9ed83b0a 598
568e18b1
MN
599 if((uint64_t)atom.size > (1<<30))
600 return -1;
115329f1 601
9ed83b0a
ZK
602 // currently SVQ3 decoder expect full STSD header - so let's fake it
603 // this should be fixed and just SMI header should be passed
01f4895c 604 av_free(st->codec->extradata);
b014dd76
BC
605 st->codec->extradata = av_mallocz(atom.size + 0x5a + FF_INPUT_BUFFER_PADDING_SIZE);
606 if (!st->codec->extradata)
607 return AVERROR(ENOMEM);
17871a02
BC
608 st->codec->extradata_size = 0x5a + atom.size;
609 memcpy(st->codec->extradata, "SVQ3", 4); // fake
610 get_buffer(pb, st->codec->extradata + 0x5a, atom.size);
611 dprintf(c->fc, "Reading SMI %"PRId64" %s\n", atom.size, st->codec->extradata + 0x5a);
9ed83b0a
ZK
612 return 0;
613}
5ca1d879 614
c3e92a6c 615static int mov_read_enda(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
de23f234 616{
6a63ff19
BC
617 AVStream *st;
618 int little_endian;
619
620 if (c->fc->nb_streams < 1)
621 return 0;
622 st = c->fc->streams[c->fc->nb_streams-1];
de23f234 623
6a63ff19 624 little_endian = get_be16(pb);
fa50a027
BC
625 dprintf(c->fc, "enda %d\n", little_endian);
626 if (little_endian == 1) {
de23f234
BC
627 switch (st->codec->codec_id) {
628 case CODEC_ID_PCM_S24BE:
629 st->codec->codec_id = CODEC_ID_PCM_S24LE;
630 break;
631 case CODEC_ID_PCM_S32BE:
632 st->codec->codec_id = CODEC_ID_PCM_S32LE;
633 break;
a1ef2c4b
PR
634 case CODEC_ID_PCM_F32BE:
635 st->codec->codec_id = CODEC_ID_PCM_F32LE;
636 break;
637 case CODEC_ID_PCM_F64BE:
638 st->codec->codec_id = CODEC_ID_PCM_F64LE;
639 break;
de23f234
BC
640 default:
641 break;
642 }
643 }
644 return 0;
645}
646
014a5102 647/* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
c3e92a6c 648static int mov_read_extradata(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
de23f234 649{
27134437
BC
650 AVStream *st;
651 uint64_t size;
68bc33fa 652 uint8_t *buf;
27134437
BC
653
654 if (c->fc->nb_streams < 1) // will happen with jp2 files
655 return 0;
656 st= c->fc->streams[c->fc->nb_streams-1];
657 size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
68bc33fa 658 if(size > INT_MAX || (uint64_t)atom.size > INT_MAX)
014a5102 659 return -1;
68bc33fa
BC
660 buf= av_realloc(st->codec->extradata, size);
661 if(!buf)
662 return -1;
663 st->codec->extradata= buf;
664 buf+= st->codec->extradata_size;
665 st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE;
666 AV_WB32( buf , atom.size + 8);
667 AV_WL32( buf + 4, atom.type);
668 get_buffer(pb, buf + 8, atom.size);
de23f234
BC
669 return 0;
670}
671
c3e92a6c 672static int mov_read_wave(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
d9b1c197 673{
6a63ff19
BC
674 AVStream *st;
675
676 if (c->fc->nb_streams < 1)
677 return 0;
678 st = c->fc->streams[c->fc->nb_streams-1];
d9b1c197
RT
679
680 if((uint64_t)atom.size > (1<<30))
681 return -1;
115329f1 682
3840147e
MN
683 if (st->codec->codec_id == CODEC_ID_QDM2) {
684 // pass all frma atom to codec, needed at least for QDM2
685 av_free(st->codec->extradata);
b014dd76
BC
686 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
687 if (!st->codec->extradata)
688 return AVERROR(ENOMEM);
3840147e 689 st->codec->extradata_size = atom.size;
b014dd76 690 get_buffer(pb, st->codec->extradata, atom.size);
3840147e 691 } else if (atom.size > 8) { /* to read frma, esds atoms */
9cf0419b
PI
692 if (mov_read_default(c, pb, atom) < 0)
693 return -1;
5c72cad8 694 } else
bb270c08 695 url_fskip(pb, atom.size);
d9b1c197
RT
696 return 0;
697}
698
bde24601
BC
699/**
700 * This function reads atom content and puts data in extradata without tag
701 * nor size unlike mov_read_extradata.
702 */
c3e92a6c 703static int mov_read_glbl(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
169eb021 704{
6a63ff19
BC
705 AVStream *st;
706
707 if (c->fc->nb_streams < 1)
708 return 0;
709 st = c->fc->streams[c->fc->nb_streams-1];
169eb021 710
568e18b1
MN
711 if((uint64_t)atom.size > (1<<30))
712 return -1;
713
01f4895c 714 av_free(st->codec->extradata);
b014dd76
BC
715 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
716 if (!st->codec->extradata)
717 return AVERROR(ENOMEM);
01f4895c 718 st->codec->extradata_size = atom.size;
b014dd76 719 get_buffer(pb, st->codec->extradata, atom.size);
169eb021
MM
720 return 0;
721}
722
c3e92a6c 723static int mov_read_stco(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
5ca1d879 724{
6a63ff19
BC
725 AVStream *st;
726 MOVStreamContext *sc;
568e18b1 727 unsigned int i, entries;
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
5ca1d879 734 get_byte(pb); /* version */
23f08617 735 get_be24(pb); /* flags */
5ca1d879
ZK
736
737 entries = get_be32(pb);
115329f1 738
568e18b1
MN
739 if(entries >= UINT_MAX/sizeof(int64_t))
740 return -1;
115329f1 741
9a630c25 742 sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
5ca1d879 743 if (!sc->chunk_offsets)
0d8f0abf
BC
744 return AVERROR(ENOMEM);
745 sc->chunk_count = entries;
746
37ffe34b
BC
747 if (atom.type == MKTAG('s','t','c','o'))
748 for(i=0; i<entries; i++)
5ca1d879 749 sc->chunk_offsets[i] = get_be32(pb);
37ffe34b
BC
750 else if (atom.type == MKTAG('c','o','6','4'))
751 for(i=0; i<entries; i++)
5ca1d879 752 sc->chunk_offsets[i] = get_be64(pb);
37ffe34b 753 else
5ca1d879 754 return -1;
115329f1 755
5ca1d879
ZK
756 return 0;
757}
758
2288834f
BC
759/**
760 * Compute codec id for 'lpcm' tag.
761 * See CoreAudioTypes and AudioStreamBasicDescription at Apple.
762 */
fb65d2ca 763static enum CodecID mov_get_lpcm_codec_id(int bps, int flags)
2288834f
BC
764{
765 if (flags & 1) { // floating point
766 if (flags & 2) { // big endian
767 if (bps == 32) return CODEC_ID_PCM_F32BE;
7e4b3fb8 768 else if (bps == 64) return CODEC_ID_PCM_F64BE;
2288834f 769 } else {
7e4b3fb8
BC
770 if (bps == 32) return CODEC_ID_PCM_F32LE;
771 else if (bps == 64) return CODEC_ID_PCM_F64LE;
2288834f
BC
772 }
773 } else {
774 if (flags & 2) {
775 if (bps == 8)
776 // signed integer
777 if (flags & 4) return CODEC_ID_PCM_S8;
778 else return CODEC_ID_PCM_U8;
779 else if (bps == 16) return CODEC_ID_PCM_S16BE;
780 else if (bps == 24) return CODEC_ID_PCM_S24BE;
781 else if (bps == 32) return CODEC_ID_PCM_S32BE;
782 } else {
783 if (bps == 8)
784 if (flags & 4) return CODEC_ID_PCM_S8;
785 else return CODEC_ID_PCM_U8;
021b8ae3 786 else if (bps == 16) return CODEC_ID_PCM_S16LE;
2288834f
BC
787 else if (bps == 24) return CODEC_ID_PCM_S24LE;
788 else if (bps == 32) return CODEC_ID_PCM_S32LE;
789 }
790 }
fb65d2ca 791 return CODEC_ID_NONE;
2288834f
BC
792}
793
c3e92a6c 794static int mov_read_stsd(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
5ca1d879 795{
6a63ff19
BC
796 AVStream *st;
797 MOVStreamContext *sc;
baf9fb32 798 int j, entries, pseudo_stream_id;
b595afaa 799
6a63ff19
BC
800 if (c->fc->nb_streams < 1)
801 return 0;
802 st = c->fc->streams[c->fc->nb_streams-1];
803 sc = st->priv_data;
804
6cea494e 805 get_byte(pb); /* version */
23f08617 806 get_be24(pb); /* flags */
6cea494e 807
6cea494e
ZK
808 entries = get_be32(pb);
809
117a9190
BC
810 for(pseudo_stream_id=0; pseudo_stream_id<entries; pseudo_stream_id++) {
811 //Parsing Sample description table
b6a17df4 812 enum CodecID id;
28155113 813 int dref_id = 1;
c3e92a6c 814 MOVAtom a = { 0, 0, 0 };
bc5c918e 815 int64_t start_pos = url_ftell(pb);
bb270c08 816 int size = get_be32(pb); /* size */
baf9fb32 817 uint32_t format = get_le32(pb); /* data format */
5cd62665 818
28155113
BC
819 if (size >= 16) {
820 get_be32(pb); /* reserved */
821 get_be16(pb); /* reserved */
822 dref_id = get_be16(pb);
823 }
0e7eed09 824
744a9c75 825 if (st->codec->codec_tag &&
978677a7 826 st->codec->codec_tag != format &&
1a40491e 827 (c->fc->video_codec_id ? ff_codec_get_id(codec_movvideo_tags, format) != c->fc->video_codec_id
1c126b4f 828 : st->codec->codec_tag != MKTAG('j','p','e','g'))
744a9c75 829 ){
7ce68923
DB
830 /* Multiple fourcc, we skip JPEG. This is not correct, we should
831 * export it as a separate AVStream but this needs a few changes
832 * in the MOV demuxer, patch welcome. */
285a3da9 833 av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n");
e7cc4b52
BC
834 url_fskip(pb, size - (url_ftell(pb) - start_pos));
835 continue;
836 }
978677a7 837 sc->pseudo_stream_id = st->codec->codec_tag ? -1 : pseudo_stream_id;
221e21b7 838 sc->dref_id= dref_id;
e7cc4b52 839
bb270c08 840 st->codec->codec_tag = format;
1a40491e 841 id = ff_codec_get_id(codec_movaudio_tags, format);
86b61d42 842 if (id<=0 && ((format&0xFFFF) == 'm'+('s'<<8) || (format&0xFFFF) == 'T'+('S'<<8)))
1a40491e 843 id = ff_codec_get_id(ff_codec_wav_tags, bswap_32(format)&0xFFFF);
bca7db35 844
48855b26 845 if (st->codec->codec_type != CODEC_TYPE_VIDEO && id > 0) {
99487f42 846 st->codec->codec_type = CODEC_TYPE_AUDIO;
48855b26 847 } else if (st->codec->codec_type != CODEC_TYPE_AUDIO && /* do not overwrite codec type */
1c126b4f 848 format && format != MKTAG('m','p','4','s')) { /* skip old asf mpeg4 tag */
1a40491e 849 id = ff_codec_get_id(codec_movvideo_tags, format);
99487f42 850 if (id <= 0)
1a40491e 851 id = ff_codec_get_id(ff_codec_bmp_tags, format);
99487f42
BC
852 if (id > 0)
853 st->codec->codec_type = CODEC_TYPE_VIDEO;
1e3c9307 854 else if(st->codec->codec_type == CODEC_TYPE_DATA){
1a40491e 855 id = ff_codec_get_id(ff_codec_movsubtitle_tags, format);
1e3c9307
MN
856 if(id > 0)
857 st->codec->codec_type = CODEC_TYPE_SUBTITLE;
858 }
99487f42
BC
859 }
860
29c90869
BC
861 dprintf(c->fc, "size=%d 4CC= %c%c%c%c codec_type=%d\n", size,
862 (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff,
863 (format >> 24) & 0xff, st->codec->codec_type);
a20da52c 864
99487f42 865 if(st->codec->codec_type==CODEC_TYPE_VIDEO) {
baf9fb32
BC
866 uint8_t codec_name[32];
867 unsigned int color_depth;
868 int color_greyscale;
baf9fb32 869
01f4895c 870 st->codec->codec_id = id;
6cea494e
ZK
871 get_be16(pb); /* version */
872 get_be16(pb); /* revision level */
873 get_be32(pb); /* vendor */
874 get_be32(pb); /* temporal quality */
94472c1d 875 get_be32(pb); /* spatial quality */
3cb4ee51
BC
876
877 st->codec->width = get_be16(pb); /* width */
878 st->codec->height = get_be16(pb); /* height */
879
6cea494e
ZK
880 get_be32(pb); /* horiz resolution */
881 get_be32(pb); /* vert resolution */
882 get_be32(pb); /* data size, always 0 */
43612ffe 883 get_be16(pb); /* frames per samples */
f8c18cd7 884
eb034aca 885 get_buffer(pb, codec_name, 32); /* codec name, pascal string */
576f1445
BC
886 if (codec_name[0] <= 31) {
887 memcpy(st->codec->codec_name, &codec_name[1],codec_name[0]);
888 st->codec->codec_name[codec_name[0]] = 0;
889 }
5cd62665 890
dd1c8f3e 891 st->codec->bits_per_coded_sample = get_be16(pb); /* depth */
01f4895c 892 st->codec->color_table_id = get_be16(pb); /* colortable id */
0de2157f 893 dprintf(c->fc, "depth %d, ctab id %d\n",
dd1c8f3e 894 st->codec->bits_per_coded_sample, st->codec->color_table_id);
b595afaa 895 /* figure out the palette situation */
dd1c8f3e
LA
896 color_depth = st->codec->bits_per_coded_sample & 0x1F;
897 color_greyscale = st->codec->bits_per_coded_sample & 0x20;
b595afaa
MM
898
899 /* if the depth is 2, 4, or 8 bpp, file is palettized */
115329f1 900 if ((color_depth == 2) || (color_depth == 4) ||
b595afaa 901 (color_depth == 8)) {
47e1d7ef
BC
902 /* for palette traversal */
903 unsigned int color_start, color_count, color_end;
904 unsigned char r, g, b;
905
e49da827 906 st->codec->palctrl = av_malloc(sizeof(*st->codec->palctrl));
b595afaa 907 if (color_greyscale) {
47e1d7ef 908 int color_index, color_dec;
b595afaa 909 /* compute the greyscale palette */
dd1c8f3e 910 st->codec->bits_per_coded_sample = color_depth;
b595afaa
MM
911 color_count = 1 << color_depth;
912 color_index = 255;
913 color_dec = 256 / (color_count - 1);
914 for (j = 0; j < color_count; j++) {
915 r = g = b = color_index;
e49da827 916 st->codec->palctrl->palette[j] =
b595afaa
MM
917 (r << 16) | (g << 8) | (b);
918 color_index -= color_dec;
919 if (color_index < 0)
920 color_index = 0;
921 }
71f36235 922 } else if (st->codec->color_table_id) {
47e1d7ef 923 const uint8_t *color_table;
b595afaa
MM
924 /* if flag bit 3 is set, use the default palette */
925 color_count = 1 << color_depth;
926 if (color_depth == 2)
a90466f7 927 color_table = ff_qt_default_palette_4;
b595afaa 928 else if (color_depth == 4)
a90466f7 929 color_table = ff_qt_default_palette_16;
b595afaa 930 else
a90466f7 931 color_table = ff_qt_default_palette_256;
b595afaa
MM
932
933 for (j = 0; j < color_count; j++) {
2121b160
RB
934 r = color_table[j * 3 + 0];
935 g = color_table[j * 3 + 1];
936 b = color_table[j * 3 + 2];
e49da827 937 st->codec->palctrl->palette[j] =
b595afaa
MM
938 (r << 16) | (g << 8) | (b);
939 }
b595afaa 940 } else {
b595afaa
MM
941 /* load the palette from the file */
942 color_start = get_be32(pb);
943 color_count = get_be16(pb);
944 color_end = get_be16(pb);
8b35bd80
MM
945 if ((color_start <= 255) &&
946 (color_end <= 255)) {
9de2919c
MM
947 for (j = color_start; j <= color_end; j++) {
948 /* each R, G, or B component is 16 bits;
949 * only use the top 8 bits; skip alpha bytes
950 * up front */
951 get_byte(pb);
952 get_byte(pb);
953 r = get_byte(pb);
954 get_byte(pb);
955 g = get_byte(pb);
956 get_byte(pb);
957 b = get_byte(pb);
958 get_byte(pb);
e49da827 959 st->codec->palctrl->palette[j] =
9de2919c 960 (r << 16) | (g << 8) | (b);
8b35bd80 961 }
b595afaa
MM
962 }
963 }
01f4895c 964 st->codec->palctrl->palette_changed = 1;
e49da827 965 }
de23f234 966 } else if(st->codec->codec_type==CODEC_TYPE_AUDIO) {
aaef2bb3 967 int bits_per_sample, flags;
de23f234 968 uint16_t version = get_be16(pb);
b595afaa 969
99487f42 970 st->codec->codec_id = id;
de23f234
BC
971 get_be16(pb); /* revision level */
972 get_be32(pb); /* vendor */
6d6d7970 973
de23f234 974 st->codec->channels = get_be16(pb); /* channel count */
318c5e05 975 dprintf(c->fc, "audio channels %d\n", st->codec->channels);
dd1c8f3e 976 st->codec->bits_per_coded_sample = get_be16(pb); /* sample size */
de23f234 977
77c75437 978 sc->audio_cid = get_be16(pb);
de23f234
BC
979 get_be16(pb); /* packet size = 0 */
980
981 st->codec->sample_rate = ((get_be32(pb) >> 16));
982
5ef3ad59
BC
983 //Read QT version 1 fields. In version 0 these do not exist.
984 dprintf(c->fc, "version =%d, isom =%d\n",version,c->isom);
985 if(!c->isom) {
986 if(version==1) {
987 sc->samples_per_frame = get_be32(pb);
988 get_be32(pb); /* bytes per packet */
989 sc->bytes_per_frame = get_be32(pb);
990 get_be32(pb); /* bytes per sample */
991 } else if(version==2) {
992 get_be32(pb); /* sizeof struct only */
993 st->codec->sample_rate = av_int2dbl(get_be64(pb)); /* float 64 */
994 st->codec->channels = get_be32(pb);
995 get_be32(pb); /* always 0x7F000000 */
dd1c8f3e 996 st->codec->bits_per_coded_sample = get_be32(pb); /* bits per channel if sound is uncompressed */
aaef2bb3 997 flags = get_be32(pb); /* lcpm format specific flag */
9184d53a
BC
998 sc->bytes_per_frame = get_be32(pb); /* bytes per audio packet if constant */
999 sc->samples_per_frame = get_be32(pb); /* lpcm frames per audio packet if constant */
2288834f 1000 if (format == MKTAG('l','p','c','m'))
dd1c8f3e 1001 st->codec->codec_id = mov_get_lpcm_codec_id(st->codec->bits_per_coded_sample, flags);
5ef3ad59
BC
1002 }
1003 }
1004
de23f234 1005 switch (st->codec->codec_id) {
b72708f8
BC
1006 case CODEC_ID_PCM_S8:
1007 case CODEC_ID_PCM_U8:
dd1c8f3e 1008 if (st->codec->bits_per_coded_sample == 16)
b72708f8
BC
1009 st->codec->codec_id = CODEC_ID_PCM_S16BE;
1010 break;
0dd39bfe 1011 case CODEC_ID_PCM_S16LE:
de23f234 1012 case CODEC_ID_PCM_S16BE:
dd1c8f3e 1013 if (st->codec->bits_per_coded_sample == 8)
de23f234 1014 st->codec->codec_id = CODEC_ID_PCM_S8;
dd1c8f3e 1015 else if (st->codec->bits_per_coded_sample == 24)
6b477e1b
BC
1016 st->codec->codec_id =
1017 st->codec->codec_id == CODEC_ID_PCM_S16BE ?
1018 CODEC_ID_PCM_S24BE : CODEC_ID_PCM_S24LE;
de23f234 1019 break;
53152765
BC
1020 /* set values for old format before stsd version 1 appeared */
1021 case CODEC_ID_MACE3:
1022 sc->samples_per_frame = 6;
1023 sc->bytes_per_frame = 2*st->codec->channels;
1024 break;
1025 case CODEC_ID_MACE6:
1026 sc->samples_per_frame = 6;
1027 sc->bytes_per_frame = 1*st->codec->channels;
1028 break;
1029 case CODEC_ID_ADPCM_IMA_QT:
1030 sc->samples_per_frame = 64;
1031 sc->bytes_per_frame = 34*st->codec->channels;
1032 break;
cc326d2b
BC
1033 case CODEC_ID_GSM:
1034 sc->samples_per_frame = 160;
1035 sc->bytes_per_frame = 33;
1036 break;
de23f234
BC
1037 default:
1038 break;
6d6d7970 1039 }
14342fd5 1040
9770089d
BC
1041 bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
1042 if (bits_per_sample) {
dd1c8f3e 1043 st->codec->bits_per_coded_sample = bits_per_sample;
9770089d
BC
1044 sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
1045 }
cc8d87b7 1046 } else if(st->codec->codec_type==CODEC_TYPE_SUBTITLE){
58e9f2ed
DC
1047 // ttxt stsd contains display flags, justification, background
1048 // color, fonts, and default styles, so fake an atom to read it
1049 MOVAtom fake_atom = { .size = size - (url_ftell(pb) - start_pos) };
fb9ac654 1050 if (format != AV_RL32("mp4s")) // mp4s contains a regular esds atom
3dd36041 1051 mov_read_glbl(c, pb, fake_atom);
cc8d87b7 1052 st->codec->codec_id= id;
6cdbff63
DC
1053 st->codec->width = sc->width;
1054 st->codec->height = sc->height;
de23f234
BC
1055 } else {
1056 /* other codec type, just skip (rtp, mp4s, tmcd ...) */
1057 url_fskip(pb, size - (url_ftell(pb) - start_pos));
6cea494e 1058 }
de23f234
BC
1059 /* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */
1060 a.size = size - (url_ftell(pb) - start_pos);
9cf0419b
PI
1061 if (a.size > 8) {
1062 if (mov_read_default(c, pb, a) < 0)
1063 return -1;
1064 } else if (a.size > 0)
de23f234 1065 url_fskip(pb, a.size);
6cea494e 1066 }
115329f1 1067
60f5c96e 1068 if(st->codec->codec_type==CODEC_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1)
302c389e 1069 st->codec->sample_rate= sc->time_scale;
e31bd3e3 1070
d00f8e17 1071 /* special codec parameters handling */
e31bd3e3 1072 switch (st->codec->codec_id) {
b250f9c6 1073#if CONFIG_DV_DEMUXER
b60c0454 1074 case CODEC_ID_DVAUDIO:
8e2fd8e1 1075 c->dv_fctx = avformat_alloc_context();
b60c0454
BC
1076 c->dv_demux = dv_init_demux(c->dv_fctx);
1077 if (!c->dv_demux) {
1078 av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
1079 return -1;
1080 }
1081 sc->dv_audio_container = 1;
1082 st->codec->codec_id = CODEC_ID_PCM_S16LE;
1083 break;
989ac5a6 1084#endif
b95319a2 1085 /* no ifdef since parameters are always those */
3f78a3a9 1086 case CODEC_ID_QCELP:
17ad7b24
BC
1087 // force sample rate for qcelp when not stored in mov
1088 if (st->codec->codec_tag != MKTAG('Q','c','l','p'))
1089 st->codec->sample_rate = 8000;
73b458e3 1090 st->codec->frame_size= 160;
061f407e 1091 st->codec->channels= 1; /* really needed */
73b458e3 1092 break;
b95319a2 1093 case CODEC_ID_AMR_NB:
aeb62788 1094 case CODEC_ID_AMR_WB:
cfb5a2ab 1095 st->codec->frame_size= sc->samples_per_frame;
b95319a2 1096 st->codec->channels= 1; /* really needed */
f06188d5 1097 /* force sample rate for amr, stsd in 3gp does not store sample rate */
5b9ce252 1098 if (st->codec->codec_id == CODEC_ID_AMR_NB)
f06188d5 1099 st->codec->sample_rate = 8000;
5b9ce252
BC
1100 else if (st->codec->codec_id == CODEC_ID_AMR_WB)
1101 st->codec->sample_rate = 16000;
b95319a2 1102 break;
a41104f8 1103 case CODEC_ID_MP2:
c59f24e6 1104 case CODEC_ID_MP3:
95a07973 1105 st->codec->codec_type = CODEC_TYPE_AUDIO; /* force type after stsd for m1a hdlr */
57004ff1 1106 st->need_parsing = AVSTREAM_PARSE_FULL;
a41104f8 1107 break;
5610f20e 1108 case CODEC_ID_GSM:
74e9b9ae
BC
1109 case CODEC_ID_ADPCM_MS:
1110 case CODEC_ID_ADPCM_IMA_WAV:
1111 st->codec->block_align = sc->bytes_per_frame;
1112 break;
be511925 1113 case CODEC_ID_ALAC:
a1532824 1114 if (st->codec->extradata_size == 36) {
364df7b7
BC
1115 st->codec->frame_size = AV_RB32(st->codec->extradata+12);
1116 st->codec->channels = AV_RB8 (st->codec->extradata+21);
a1532824 1117 }
be511925 1118 break;
e31bd3e3
BC
1119 default:
1120 break;
1121 }
5cd62665 1122
6cea494e
ZK
1123 return 0;
1124}
1125
c3e92a6c 1126static int mov_read_stsc(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
6cea494e 1127{
6a63ff19
BC
1128 AVStream *st;
1129 MOVStreamContext *sc;
568e18b1 1130 unsigned int i, entries;
b6a17df4 1131
6a63ff19
BC
1132 if (c->fc->nb_streams < 1)
1133 return 0;
1134 st = c->fc->streams[c->fc->nb_streams-1];
1135 sc = st->priv_data;
1136
6cea494e 1137 get_byte(pb); /* version */
23f08617 1138 get_be24(pb); /* flags */
6cea494e
ZK
1139
1140 entries = get_be32(pb);
115329f1 1141
f8c18cd7
BC
1142 dprintf(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
1143
0d8f0abf
BC
1144 if(entries >= UINT_MAX / sizeof(*sc->stsc_data))
1145 return -1;
04e06cfa
BC
1146 sc->stsc_data = av_malloc(entries * sizeof(*sc->stsc_data));
1147 if (!sc->stsc_data)
0d8f0abf
BC
1148 return AVERROR(ENOMEM);
1149 sc->stsc_count = entries;
1150
6cea494e 1151 for(i=0; i<entries; i++) {
04e06cfa
BC
1152 sc->stsc_data[i].first = get_be32(pb);
1153 sc->stsc_data[i].count = get_be32(pb);
1154 sc->stsc_data[i].id = get_be32(pb);
6cea494e
ZK
1155 }
1156 return 0;
1157}
1158
171a3531
BC
1159static int mov_read_stps(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
1160{
1161 AVStream *st;
1162 MOVStreamContext *sc;
1163 unsigned i, entries;
1164
1165 if (c->fc->nb_streams < 1)
1166 return 0;
1167 st = c->fc->streams[c->fc->nb_streams-1];
1168 sc = st->priv_data;
1169
1170 get_be32(pb); // version + flags
1171
1172 entries = get_be32(pb);
1173 if (entries >= UINT_MAX / sizeof(*sc->stps_data))
1174 return -1;
1175 sc->stps_data = av_malloc(entries * sizeof(*sc->stps_data));
1176 if (!sc->stps_data)
1177 return AVERROR(ENOMEM);
1178 sc->stps_count = entries;
1179
1180 for (i = 0; i < entries; i++) {
1181 sc->stps_data[i] = get_be32(pb);
1182 //dprintf(c->fc, "stps %d\n", sc->stps_data[i]);
1183 }
1184
1185 return 0;
1186}
1187
c3e92a6c 1188static int mov_read_stss(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
247d56f5 1189{
6a63ff19
BC
1190 AVStream *st;
1191 MOVStreamContext *sc;
568e18b1 1192 unsigned int i, entries;
247d56f5 1193
6a63ff19
BC
1194 if (c->fc->nb_streams < 1)
1195 return 0;
1196 st = c->fc->streams[c->fc->nb_streams-1];
1197 sc = st->priv_data;
1198
247d56f5 1199 get_byte(pb); /* version */
23f08617 1200 get_be24(pb); /* flags */
247d56f5
BB
1201
1202 entries = get_be32(pb);
115329f1 1203
0d8f0abf
BC
1204 dprintf(c->fc, "keyframe_count = %d\n", entries);
1205
1c02d96f 1206 if(entries >= UINT_MAX / sizeof(int))
568e18b1 1207 return -1;
1c02d96f 1208 sc->keyframes = av_malloc(entries * sizeof(int));
247d56f5 1209 if (!sc->keyframes)
0d8f0abf
BC
1210 return AVERROR(ENOMEM);
1211 sc->keyframe_count = entries;
1212
247d56f5
BB
1213 for(i=0; i<entries; i++) {
1214 sc->keyframes[i] = get_be32(pb);
f8c18cd7 1215 //dprintf(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
247d56f5
BB
1216 }
1217 return 0;
1218}
1219
c3e92a6c 1220static int mov_read_stsz(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
6cea494e 1221{
6a63ff19
BC
1222 AVStream *st;
1223 MOVStreamContext *sc;
bd27eed6
AC
1224 unsigned int i, entries, sample_size, field_size, num_bytes;
1225 GetBitContext gb;
1226 unsigned char* buf;
b6a17df4 1227
6a63ff19
BC
1228 if (c->fc->nb_streams < 1)
1229 return 0;
1230 st = c->fc->streams[c->fc->nb_streams-1];
1231 sc = st->priv_data;
1232
6cea494e 1233 get_byte(pb); /* version */
23f08617 1234 get_be24(pb); /* flags */
5cd62665 1235
bd27eed6 1236 if (atom.type == MKTAG('s','t','s','z')) {
d0dab0ec
AC
1237 sample_size = get_be32(pb);
1238 if (!sc->sample_size) /* do not overwrite value computed in stsd */
1239 sc->sample_size = sample_size;
1240 field_size = 32;
bd27eed6
AC
1241 } else {
1242 sample_size = 0;
1243 get_be24(pb); /* reserved */
1244 field_size = get_byte(pb);
1245 }
6cea494e 1246 entries = get_be32(pb);
0d8f0abf
BC
1247
1248 dprintf(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, entries);
568e18b1 1249
6cea494e 1250 sc->sample_count = entries;
b72708f8
BC
1251 if (sample_size)
1252 return 0;
1253
bd27eed6
AC
1254 if (field_size != 4 && field_size != 8 && field_size != 16 && field_size != 32) {
1255 av_log(c->fc, AV_LOG_ERROR, "Invalid sample field size %d\n", field_size);
1256 return -1;
1257 }
1258
e4bc8af1 1259 if (entries >= UINT_MAX / sizeof(int) || entries >= (UINT_MAX - 4) / field_size)
0d8f0abf 1260 return -1;
1c02d96f 1261 sc->sample_sizes = av_malloc(entries * sizeof(int));
b6a17df4 1262 if (!sc->sample_sizes)
0d8f0abf
BC
1263 return AVERROR(ENOMEM);
1264
bd27eed6
AC
1265 num_bytes = (entries*field_size+4)>>3;
1266
08a5b4e9 1267 buf = av_malloc(num_bytes+FF_INPUT_BUFFER_PADDING_SIZE);
bd27eed6
AC
1268 if (!buf) {
1269 av_freep(&sc->sample_sizes);
1270 return AVERROR(ENOMEM);
1271 }
1272
1273 if (get_buffer(pb, buf, num_bytes) < num_bytes) {
1274 av_freep(&sc->sample_sizes);
1275 av_free(buf);
1276 return -1;
1277 }
1278
1279 init_get_bits(&gb, buf, 8*num_bytes);
1280
eb61405a 1281 for(i=0; i<entries; i++)
bd27eed6
AC
1282 sc->sample_sizes[i] = get_bits_long(&gb, field_size);
1283
1284 av_free(buf);
6cea494e
ZK
1285 return 0;
1286}
1287
c3e92a6c 1288static int mov_read_stts(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
0147f198 1289{
6a63ff19
BC
1290 AVStream *st;
1291 MOVStreamContext *sc;
568e18b1 1292 unsigned int i, entries;
d957696f
MN
1293 int64_t duration=0;
1294 int64_t total_sample_count=0;
b6a17df4 1295
6a63ff19
BC
1296 if (c->fc->nb_streams < 1)
1297 return 0;
1298 st = c->fc->streams[c->fc->nb_streams-1];
1299 sc = st->priv_data;
1300
0147f198 1301 get_byte(pb); /* version */
23f08617 1302 get_be24(pb); /* flags */
0147f198 1303 entries = get_be32(pb);
0d8f0abf
BC
1304
1305 dprintf(c->fc, "track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries);
1306
c3e92a6c 1307 if(entries >= UINT_MAX / sizeof(*sc->stts_data))
568e18b1 1308 return -1;
c3e92a6c 1309 sc->stts_data = av_malloc(entries * sizeof(*sc->stts_data));
c1da59fa 1310 if (!sc->stts_data)
0d8f0abf
BC
1311 return AVERROR(ENOMEM);
1312 sc->stts_count = entries;
cd7352d5 1313
0147f198 1314 for(i=0; i<entries; i++) {
cd461d48
MN
1315 int sample_duration;
1316 int sample_count;
0147f198 1317
891f64b3 1318 sample_count=get_be32(pb);
0147f198 1319 sample_duration = get_be32(pb);
cd7352d5
MN
1320 sc->stts_data[i].count= sample_count;
1321 sc->stts_data[i].duration= sample_duration;
1322
318c5e05 1323 dprintf(c->fc, "sample_count=%d, sample_duration=%d\n",sample_count,sample_duration);
4e5ef14f 1324
7e815047 1325 duration+=(int64_t)sample_duration*sample_count;
891f64b3 1326 total_sample_count+=sample_count;
891f64b3 1327 }
1328
961e0ccd
MN
1329 st->nb_frames= total_sample_count;
1330 if(duration)
1331 st->duration= duration;
0147f198
FR
1332 return 0;
1333}
1334
4b29ed39
BC
1335static int mov_read_cslg(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
1336{
1337 AVStream *st;
1338 MOVStreamContext *sc;
1339
41e64999 1340 if (c->fc->nb_streams < 1)
4b29ed39
BC
1341 return 0;
1342 st = c->fc->streams[c->fc->nb_streams-1];
1343 sc = st->priv_data;
1344
1345 get_be32(pb); // version + flags
1346
1347 sc->dts_shift = get_be32(pb);
1348 dprintf(c->fc, "dts shift %d\n", sc->dts_shift);
1349
4b29ed39
BC
1350 get_be32(pb); // least dts to pts delta
1351 get_be32(pb); // greatest dts to pts delta
1352 get_be32(pb); // pts start
1353 get_be32(pb); // pts end
1354
1355 return 0;
1356}
1357
c3e92a6c 1358static int mov_read_ctts(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
c4ac052b 1359{
6a63ff19
BC
1360 AVStream *st;
1361 MOVStreamContext *sc;
c4ac052b
MN
1362 unsigned int i, entries;
1363
6a63ff19
BC
1364 if (c->fc->nb_streams < 1)
1365 return 0;
1366 st = c->fc->streams[c->fc->nb_streams-1];
1367 sc = st->priv_data;
1368
c4ac052b 1369 get_byte(pb); /* version */
23f08617 1370 get_be24(pb); /* flags */
c4ac052b 1371 entries = get_be32(pb);
0d8f0abf
BC
1372
1373 dprintf(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
1374
c3e92a6c 1375 if(entries >= UINT_MAX / sizeof(*sc->ctts_data))
c4ac052b 1376 return -1;
c3e92a6c 1377 sc->ctts_data = av_malloc(entries * sizeof(*sc->ctts_data));
c1da59fa 1378 if (!sc->ctts_data)
0d8f0abf
BC
1379 return AVERROR(ENOMEM);
1380 sc->ctts_count = entries;
4e5ef14f 1381
c4ac052b 1382 for(i=0; i<entries; i++) {
70a61ed4
MN
1383 int count =get_be32(pb);
1384 int duration =get_be32(pb);
1385
1386 sc->ctts_data[i].count = count;
1387 sc->ctts_data[i].duration= duration;
c4ac052b
MN
1388 }
1389 return 0;
1390}
1391
1e77810d
BC
1392static void mov_build_index(MOVContext *mov, AVStream *st)
1393{
1394 MOVStreamContext *sc = st->priv_data;
bc5c918e 1395 int64_t current_offset;
1e77810d
BC
1396 int64_t current_dts = 0;
1397 unsigned int stts_index = 0;
1398 unsigned int stsc_index = 0;
1399 unsigned int stss_index = 0;
171a3531 1400 unsigned int stps_index = 0;
1e77810d
BC
1401 unsigned int i, j;
1402
baf2ffd3
BC
1403 /* adjust first dts according to edit list */
1404 if (sc->time_offset) {
2ac736a6 1405 int rescaled = sc->time_offset < 0 ? av_rescale(sc->time_offset, sc->time_scale, mov->time_scale) : sc->time_offset;
bbe46bc4 1406 current_dts = -rescaled;
f03a081d
BC
1407 if (sc->ctts_data && sc->ctts_data[0].duration / sc->stts_data[0].duration > 16) {
1408 /* more than 16 frames delay, dts are likely wrong
1409 this happens with files created by iMovie */
1410 sc->wrong_dts = 1;
1411 st->codec->has_b_frames = 1;
1412 }
baf2ffd3
BC
1413 }
1414
d3bc61ac
BC
1415 /* only use old uncompressed audio chunk demuxing when stts specifies it */
1416 if (!(st->codec->codec_type == CODEC_TYPE_AUDIO &&
1417 sc->stts_count == 1 && sc->stts_data[0].duration == 1)) {
1e77810d
BC
1418 unsigned int current_sample = 0;
1419 unsigned int stts_sample = 0;
171a3531 1420 unsigned int sample_size;
1e77810d
BC
1421 unsigned int distance = 0;
1422 int key_off = sc->keyframes && sc->keyframes[0] == 1;
1423
4b29ed39
BC
1424 current_dts -= sc->dts_shift;
1425
1e77810d
BC
1426 st->nb_frames = sc->sample_count;
1427 for (i = 0; i < sc->chunk_count; i++) {
1428 current_offset = sc->chunk_offsets[i];
04e06cfa
BC
1429 if (stsc_index + 1 < sc->stsc_count &&
1430 i + 1 == sc->stsc_data[stsc_index + 1].first)
1e77810d 1431 stsc_index++;
04e06cfa 1432 for (j = 0; j < sc->stsc_data[stsc_index].count; j++) {
171a3531 1433 int keyframe = 0;
1e77810d
BC
1434 if (current_sample >= sc->sample_count) {
1435 av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
f0f2218d 1436 return;
1e77810d 1437 }
171a3531
BC
1438
1439 if (!sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index]) {
1440 keyframe = 1;
1e77810d
BC
1441 if (stss_index + 1 < sc->keyframe_count)
1442 stss_index++;
171a3531
BC
1443 } else if (sc->stps_count && current_sample+key_off == sc->stps_data[stps_index]) {
1444 keyframe = 1;
1445 if (stps_index + 1 < sc->stps_count)
1446 stps_index++;
1e77810d 1447 }
171a3531
BC
1448 if (keyframe)
1449 distance = 0;
1e77810d 1450 sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
978677a7 1451 if(sc->pseudo_stream_id == -1 ||
04e06cfa 1452 sc->stsc_data[stsc_index].id - 1 == sc->pseudo_stream_id) {
1e77810d
BC
1453 av_add_index_entry(st, current_offset, current_dts, sample_size, distance,
1454 keyframe ? AVINDEX_KEYFRAME : 0);
585dac65
BC
1455 dprintf(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
1456 "size %d, distance %d, keyframe %d\n", st->index, current_sample,
1457 current_offset, current_dts, sample_size, distance, keyframe);
1458 }
6c00a9de 1459
1e77810d 1460 current_offset += sample_size;
bbe46bc4 1461 current_dts += sc->stts_data[stts_index].duration;
1e77810d
BC
1462 distance++;
1463 stts_sample++;
1464 current_sample++;
1465 if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
1466 stts_sample = 0;
1467 stts_index++;
1468 }
1469 }
1470 }
7e69621f 1471 } else {
1e77810d 1472 for (i = 0; i < sc->chunk_count; i++) {
7e69621f
BC
1473 unsigned chunk_samples;
1474
1e77810d 1475 current_offset = sc->chunk_offsets[i];
04e06cfa
BC
1476 if (stsc_index + 1 < sc->stsc_count &&
1477 i + 1 == sc->stsc_data[stsc_index + 1].first)
1e77810d 1478 stsc_index++;
04e06cfa 1479 chunk_samples = sc->stsc_data[stsc_index].count;
7e69621f
BC
1480
1481 if (sc->samples_per_frame && chunk_samples % sc->samples_per_frame) {
1482 av_log(mov->fc, AV_LOG_ERROR, "error unaligned chunk\n");
1483 return;
1484 }
1485
1486 while (chunk_samples > 0) {
1487 unsigned size, samples;
1488
1489 if (sc->samples_per_frame >= 160) { // gsm
1490 samples = sc->samples_per_frame;
1491 size = sc->bytes_per_frame;
1492 } else {
1493 if (sc->samples_per_frame > 1) {
1494 samples = FFMIN((1024 / sc->samples_per_frame)*
1495 sc->samples_per_frame, chunk_samples);
1496 size = (samples / sc->samples_per_frame) * sc->bytes_per_frame;
1e77810d 1497 } else {
7e69621f
BC
1498 samples = FFMIN(1024, chunk_samples);
1499 size = samples * sc->sample_size;
1e77810d
BC
1500 }
1501 }
7e69621f
BC
1502
1503 av_add_index_entry(st, current_offset, current_dts, size, 0, AVINDEX_KEYFRAME);
117a9190
BC
1504 dprintf(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", "
1505 "size %d, duration %d\n", st->index, i, current_offset, current_dts,
7e69621f
BC
1506 size, samples);
1507
1508 current_offset += size;
bbe46bc4 1509 current_dts += samples;
7e69621f 1510 chunk_samples -= samples;
1e77810d
BC
1511 }
1512 }
1513 }
1e77810d 1514}
bd991df2 1515
c3e92a6c 1516static int mov_read_trak(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
5ca1d879
ZK
1517{
1518 AVStream *st;
1519 MOVStreamContext *sc;
bd991df2 1520 int ret;
5ca1d879 1521
5ca1d879 1522 st = av_new_stream(c->fc, c->fc->nb_streams);
3efe8848 1523 if (!st) return AVERROR(ENOMEM);
9a630c25 1524 sc = av_mallocz(sizeof(MOVStreamContext));
2922cbdb 1525 if (!sc) return AVERROR(ENOMEM);
5ca1d879 1526
5ca1d879 1527 st->priv_data = sc;
05edc1a7 1528 st->codec->codec_type = CODEC_TYPE_DATA;
64d50fa5 1529 sc->ffindex = st->index;
5ca1d879 1530
bd991df2
BC
1531 if ((ret = mov_read_default(c, pb, atom)) < 0)
1532 return ret;
1533
1534 /* sanity checks */
6c00a9de
BC
1535 if (sc->chunk_count && (!sc->stts_count || !sc->stsc_count ||
1536 (!sc->sample_size && !sc->sample_count))) {
6282c5f4
BC
1537 av_log(c->fc, AV_LOG_ERROR, "stream %d, missing mandatory atoms, broken header\n",
1538 st->index);
bd991df2
BC
1539 return 0;
1540 }
6c00a9de 1541
6c00a9de
BC
1542 if (!sc->time_scale)
1543 sc->time_scale = c->time_scale;
1544
bbe46bc4 1545 av_set_pts_info(st, 64, 1, sc->time_scale);
bd991df2 1546
3f78a3a9 1547 if (st->codec->codec_type == CODEC_TYPE_AUDIO &&
5b4f5e5d
BC
1548 !st->codec->frame_size && sc->stts_count == 1) {
1549 st->codec->frame_size = av_rescale(sc->stts_data[0].duration,
1550 st->codec->sample_rate, sc->time_scale);
1551 dprintf(c->fc, "frame size %d\n", st->codec->frame_size);
1552 }
bd991df2 1553
bd991df2
BC
1554 mov_build_index(c, st);
1555
1556 if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) {
1557 if (url_fopen(&sc->pb, sc->drefs[sc->dref_id-1].path, URL_RDONLY) < 0)
9e81a0ce
BC
1558 av_log(c->fc, AV_LOG_ERROR, "stream %d, error opening file %s: %s\n",
1559 st->index, sc->drefs[sc->dref_id-1].path, strerror(errno));
bd991df2
BC
1560 } else
1561 sc->pb = c->fc->pb;
1562
1563 switch (st->codec->codec_id) {
b250f9c6 1564#if CONFIG_H261_DECODER
bd991df2
BC
1565 case CODEC_ID_H261:
1566#endif
b250f9c6 1567#if CONFIG_H263_DECODER
bd991df2
BC
1568 case CODEC_ID_H263:
1569#endif
a0dd3c00
BC
1570#if CONFIG_H264_DECODER
1571 case CODEC_ID_H264:
1572#endif
b250f9c6 1573#if CONFIG_MPEG4_DECODER
bd991df2
BC
1574 case CODEC_ID_MPEG4:
1575#endif
6c00a9de 1576 st->codec->width = 0; /* let decoder init width/height */
bd991df2
BC
1577 st->codec->height= 0;
1578 break;
bd991df2 1579 }
f9900374
BC
1580
1581 /* Do not need those anymore. */
1582 av_freep(&sc->chunk_offsets);
04e06cfa 1583 av_freep(&sc->stsc_data);
f9900374
BC
1584 av_freep(&sc->sample_sizes);
1585 av_freep(&sc->keyframes);
1586 av_freep(&sc->stts_data);
171a3531 1587 av_freep(&sc->stps_data);
f9900374 1588
bd991df2 1589 return 0;
5ca1d879
ZK
1590}
1591
c3e92a6c 1592static int mov_read_ilst(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
51c15201
BC
1593{
1594 int ret;
1595 c->itunes_metadata = 1;
1596 ret = mov_read_default(c, pb, atom);
1597 c->itunes_metadata = 0;
1598 return ret;
1599}
1600
c3e92a6c 1601static int mov_read_meta(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
51c15201 1602{
df8843c6
BC
1603 while (atom.size > 8) {
1604 uint32_t tag = get_le32(pb);
1605 atom.size -= 4;
1606 if (tag == MKTAG('h','d','l','r')) {
1607 url_fseek(pb, -8, SEEK_CUR);
1608 atom.size += 8;
1609 return mov_read_default(c, pb, atom);
1610 }
1611 }
1612 return 0;
51c15201
BC
1613}
1614
c3e92a6c 1615static int mov_read_tkhd(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
5ca1d879 1616{
ec072669
JS
1617 int i;
1618 int width;
1619 int height;
1620 int64_t disp_transform[2];
1621 int display_matrix[3][2];
6a63ff19
BC
1622 AVStream *st;
1623 MOVStreamContext *sc;
1624 int version;
1625
1626 if (c->fc->nb_streams < 1)
1627 return 0;
1628 st = c->fc->streams[c->fc->nb_streams-1];
1629 sc = st->priv_data;
5ca1d879 1630
6a63ff19 1631 version = get_byte(pb);
23f08617 1632 get_be24(pb); /* flags */
5ca1d879
ZK
1633 /*
1634 MOV_TRACK_ENABLED 0x0001
1635 MOV_TRACK_IN_MOVIE 0x0002
1636 MOV_TRACK_IN_PREVIEW 0x0004
1637 MOV_TRACK_IN_POSTER 0x0008
1638 */
1639
1175561e
BC
1640 if (version == 1) {
1641 get_be64(pb);
1642 get_be64(pb);
1643 } else {
1644 get_be32(pb); /* creation time */
1645 get_be32(pb); /* modification time */
1646 }
5ca1d879
ZK
1647 st->id = (int)get_be32(pb); /* track id (NOT 0 !)*/
1648 get_be32(pb); /* reserved */
fcdd622c 1649
117a9190
BC
1650 /* highlevel (considering edits) duration in movie timebase */
1651 (version == 1) ? get_be64(pb) : get_be32(pb);
5ca1d879
ZK
1652 get_be32(pb); /* reserved */
1653 get_be32(pb); /* reserved */
1654
1655 get_be16(pb); /* layer */
1656 get_be16(pb); /* alternate group */
1657 get_be16(pb); /* volume */
1658 get_be16(pb); /* reserved */
1659
ec072669
JS
1660 //read in the display matrix (outlined in ISO 14496-12, Section 6.2.2)
1661 // they're kept in fixed point format through all calculations
1662 // ignore u,v,z b/c we don't need the scale factor to calc aspect ratio
1663 for (i = 0; i < 3; i++) {
1664 display_matrix[i][0] = get_be32(pb); // 16.16 fixed point
1665 display_matrix[i][1] = get_be32(pb); // 16.16 fixed point
1666 get_be32(pb); // 2.30 fixed point (not used)
1667 }
5ca1d879 1668
ec072669
JS
1669 width = get_be32(pb); // 16.16 fixed point track width
1670 height = get_be32(pb); // 16.16 fixed point track height
6cdbff63
DC
1671 sc->width = width >> 16;
1672 sc->height = height >> 16;
ec072669 1673
d862fce7 1674 // transform the display width/height according to the matrix
ec072669 1675 // skip this if the display matrix is the default identity matrix
d862fce7 1676 // or if it is rotating the picture, ex iPhone 3GS
ec072669
JS
1677 // to keep the same scale, use [width height 1<<16]
1678 if (width && height &&
d862fce7
BC
1679 ((display_matrix[0][0] != 65536 ||
1680 display_matrix[1][1] != 65536) &&
1681 !display_matrix[0][1] &&
1682 !display_matrix[1][0] &&
1683 !display_matrix[2][0] && !display_matrix[2][1])) {
ec072669
JS
1684 for (i = 0; i < 2; i++)
1685 disp_transform[i] =
1686 (int64_t) width * display_matrix[0][i] +
1687 (int64_t) height * display_matrix[1][i] +
1688 ((int64_t) display_matrix[2][i] << 16);
1689
1690 //sample aspect ratio is new width/height divided by old width/height
59729451 1691 st->sample_aspect_ratio = av_d2q(
ec072669
JS
1692 ((double) disp_transform[0] * height) /
1693 ((double) disp_transform[1] * width), INT_MAX);
1694 }
5ca1d879
ZK
1695 return 0;
1696}
1697
c3e92a6c 1698static int mov_read_tfhd(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
61aedb0f
BC
1699{
1700 MOVFragment *frag = &c->fragment;
1701 MOVTrackExt *trex = NULL;
1702 int flags, track_id, i;
1703
1704 get_byte(pb); /* version */
1705 flags = get_be24(pb);
1706
1707 track_id = get_be32(pb);
63581eb1 1708 if (!track_id)
61aedb0f
BC
1709 return -1;
1710 frag->track_id = track_id;
1711 for (i = 0; i < c->trex_count; i++)
1712 if (c->trex_data[i].track_id == frag->track_id) {
1713 trex = &c->trex_data[i];
1714 break;
1715 }
1716 if (!trex) {
1717 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding trex\n");
1718 return -1;
1719 }
1720
1721 if (flags & 0x01) frag->base_data_offset = get_be64(pb);
1722 else frag->base_data_offset = frag->moof_offset;
1723 if (flags & 0x02) frag->stsd_id = get_be32(pb);
1724 else frag->stsd_id = trex->stsd_id;
1725
1726 frag->duration = flags & 0x08 ? get_be32(pb) : trex->duration;
1727 frag->size = flags & 0x10 ? get_be32(pb) : trex->size;
1728 frag->flags = flags & 0x20 ? get_be32(pb) : trex->flags;
1729 dprintf(c->fc, "frag flags 0x%x\n", frag->flags);
1730 return 0;
1731}
1732
c3e92a6c 1733static int mov_read_trex(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
61aedb0f
BC
1734{
1735 MOVTrackExt *trex;
1736
1737 if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data))
1738 return -1;
0d8f0abf
BC
1739 trex = av_realloc(c->trex_data, (c->trex_count+1)*sizeof(*c->trex_data));
1740 if (!trex)
61aedb0f 1741 return AVERROR(ENOMEM);
0d8f0abf 1742 c->trex_data = trex;
61aedb0f
BC
1743 trex = &c->trex_data[c->trex_count++];
1744 get_byte(pb); /* version */
1745 get_be24(pb); /* flags */
1746 trex->track_id = get_be32(pb);
1747 trex->stsd_id = get_be32(pb);
1748 trex->duration = get_be32(pb);
1749 trex->size = get_be32(pb);
1750 trex->flags = get_be32(pb);
1751 return 0;
1752}
1753
c3e92a6c 1754static int mov_read_trun(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
61aedb0f
BC
1755{
1756 MOVFragment *frag = &c->fragment;
63581eb1 1757 AVStream *st = NULL;
44e43aab 1758 MOVStreamContext *sc;
61aedb0f
BC
1759 uint64_t offset;
1760 int64_t dts;
1761 int data_offset = 0;
1762 unsigned entries, first_sample_flags = frag->flags;
1763 int flags, distance, i;
1764
63581eb1
AC
1765 for (i = 0; i < c->fc->nb_streams; i++) {
1766 if (c->fc->streams[i]->id == frag->track_id) {
1767 st = c->fc->streams[i];
1768 break;
1769 }
1770 }
1771 if (!st) {
1772 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id);
44e43aab 1773 return -1;
63581eb1 1774 }
44e43aab 1775 sc = st->priv_data;
61aedb0f
BC
1776 if (sc->pseudo_stream_id+1 != frag->stsd_id)
1777 return 0;
61aedb0f
BC
1778 get_byte(pb); /* version */
1779 flags = get_be24(pb);
1780 entries = get_be32(pb);
1781 dprintf(c->fc, "flags 0x%x entries %d\n", flags, entries);
1782 if (flags & 0x001) data_offset = get_be32(pb);
1783 if (flags & 0x004) first_sample_flags = get_be32(pb);
1784 if (flags & 0x800) {
0d8f0abf 1785 MOVStts *ctts_data;
61aedb0f
BC
1786 if ((uint64_t)entries+sc->ctts_count >= UINT_MAX/sizeof(*sc->ctts_data))
1787 return -1;
0d8f0abf
BC
1788 ctts_data = av_realloc(sc->ctts_data,
1789 (entries+sc->ctts_count)*sizeof(*sc->ctts_data));
1790 if (!ctts_data)
61aedb0f 1791 return AVERROR(ENOMEM);
0d8f0abf 1792 sc->ctts_data = ctts_data;
61aedb0f
BC
1793 }
1794 dts = st->duration;
1795 offset = frag->base_data_offset + data_offset;
1796 distance = 0;
1797 dprintf(c->fc, "first sample flags 0x%x\n", first_sample_flags);
1798 for (i = 0; i < entries; i++) {
1799 unsigned sample_size = frag->size;
1800 int sample_flags = i ? frag->flags : first_sample_flags;
1801 unsigned sample_duration = frag->duration;
1802 int keyframe;
1803
1804 if (flags & 0x100) sample_duration = get_be32(pb);
1805 if (flags & 0x200) sample_size = get_be32(pb);
1806 if (flags & 0x400) sample_flags = get_be32(pb);
1807 if (flags & 0x800) {
1808 sc->ctts_data[sc->ctts_count].count = 1;
1809 sc->ctts_data[sc->ctts_count].duration = get_be32(pb);
1810 sc->ctts_count++;
1811 }
1812 if ((keyframe = st->codec->codec_type == CODEC_TYPE_AUDIO ||
1813 (flags & 0x004 && !i && !sample_flags) || sample_flags & 0x2000000))
1814 distance = 0;
1815 av_add_index_entry(st, offset, dts, sample_size, distance,
1816 keyframe ? AVINDEX_KEYFRAME : 0);
1817 dprintf(c->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
1818 "size %d, distance %d, keyframe %d\n", st->index, sc->sample_count+i,
1819 offset, dts, sample_size, distance, keyframe);
1820 distance++;
bbe46bc4 1821 dts += sample_duration;
61aedb0f
BC
1822 offset += sample_size;
1823 }
1824 frag->moof_offset = offset;
61aedb0f
BC
1825 st->duration = dts;
1826 return 0;
1827}
1828
5ca1d879
ZK
1829/* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
1830/* like the files created with Adobe Premiere 5.0, for samples see */
1831/* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
c3e92a6c 1832static int mov_read_wide(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
5ca1d879
ZK
1833{
1834 int err;
5ca1d879 1835
5ca1d879
ZK
1836 if (atom.size < 8)
1837 return 0; /* continue */
1838 if (get_be32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
1839 url_fskip(pb, atom.size - 4);
1840 return 0;
1841 }
1842 atom.type = get_le32(pb);
1843 atom.offset += 8;
1844 atom.size -= 8;
1c126b4f 1845 if (atom.type != MKTAG('m','d','a','t')) {
5ca1d879
ZK
1846 url_fskip(pb, atom.size);
1847 return 0;
1848 }
1849 err = mov_read_mdat(c, pb, atom);
5ca1d879
ZK
1850 return err;
1851}
1852
c3e92a6c 1853static int mov_read_cmov(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
0147f198 1854{
b250f9c6 1855#if CONFIG_ZLIB
0147f198 1856 ByteIOContext ctx;
b6a17df4
ZK
1857 uint8_t *cmov_data;
1858 uint8_t *moov_data; /* uncompressed data */
0147f198 1859 long cmov_len, moov_len;
6f04eb1e 1860 int ret = -1;
b6a17df4 1861
0147f198 1862 get_be32(pb); /* dcom atom */
1c126b4f 1863 if (get_le32(pb) != MKTAG('d','c','o','m'))
0147f198 1864 return -1;
1c126b4f 1865 if (get_le32(pb) != MKTAG('z','l','i','b')) {
f3592353 1866 av_log(c->fc, AV_LOG_ERROR, "unknown compression for cmov atom !");
0147f198
FR
1867 return -1;
1868 }
1869 get_be32(pb); /* cmvd atom */
1c126b4f 1870 if (get_le32(pb) != MKTAG('c','m','v','d'))
0147f198
FR
1871 return -1;
1872 moov_len = get_be32(pb); /* uncompressed size */
5ca1d879 1873 cmov_len = atom.size - 6 * 4;
5cd62665 1874
9a630c25 1875 cmov_data = av_malloc(cmov_len);
0147f198 1876 if (!cmov_data)
0d8f0abf 1877 return AVERROR(ENOMEM);
9a630c25 1878 moov_data = av_malloc(moov_len);
0147f198
FR
1879 if (!moov_data) {
1880 av_free(cmov_data);
0d8f0abf 1881 return AVERROR(ENOMEM);
0147f198
FR
1882 }
1883 get_buffer(pb, cmov_data, cmov_len);
b6a17df4 1884 if(uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
6f04eb1e 1885 goto free_and_return;
942f3bb5 1886 if(init_put_byte(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
6f04eb1e 1887 goto free_and_return;
1c126b4f 1888 atom.type = MKTAG('m','o','o','v');
5ca1d879
ZK
1889 atom.offset = 0;
1890 atom.size = moov_len;
9ed83b0a 1891#ifdef DEBUG
dbb4f00a 1892// { int fd = open("/tmp/uncompheader.mov", O_WRONLY | O_CREAT); write(fd, moov_data, moov_len); close(fd); }
9ed83b0a 1893#endif
5ca1d879 1894 ret = mov_read_default(c, &ctx, atom);
6f04eb1e 1895free_and_return:
0147f198
FR
1896 av_free(moov_data);
1897 av_free(cmov_data);
1898 return ret;
d966b2f0
BC
1899#else
1900 av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
1901 return -1;
0147f198 1902#endif
d966b2f0 1903}
0147f198 1904
baf25c9d 1905/* edit list atom */
c3e92a6c 1906static int mov_read_elst(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
baf25c9d 1907{
1c4bf2ec 1908 MOVStreamContext *sc;
e0977c80
BC
1909 int i, edit_count;
1910
1c4bf2ec
BC
1911 if (c->fc->nb_streams < 1)
1912 return 0;
1913 sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
1914
e0977c80 1915 get_byte(pb); /* version */
23f08617 1916 get_be24(pb); /* flags */
1975c52c 1917 edit_count = get_be32(pb); /* entries */
e0977c80 1918
53e099de
BC
1919 if((uint64_t)edit_count*12+8 > atom.size)
1920 return -1;
1921
e0977c80 1922 for(i=0; i<edit_count; i++){
d435e520 1923 int time;
2ac736a6 1924 int duration = get_be32(pb); /* Track duration */
d435e520 1925 time = get_be32(pb); /* Media time */
e0977c80 1926 get_be32(pb); /* Media rate */
2ac736a6
RD
1927 if (i == 0 && time >= -1) {
1928 sc->time_offset = time != -1 ? time : -duration;
a5929abe 1929 }
e0977c80 1930 }
baf2ffd3
BC
1931
1932 if(edit_count > 1)
1933 av_log(c->fc, AV_LOG_WARNING, "multiple edit list entries, "
1934 "a/v desync might occur, patch welcome\n");
1935
4c125b8f 1936 dprintf(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, edit_count);
e0977c80 1937 return 0;
baf25c9d
GC
1938}
1939
6cea494e 1940static const MOVParseTableEntry mov_default_parse_table[] = {
d4fdba0d 1941{ MKTAG('a','v','s','s'), mov_read_extradata },
1c126b4f 1942{ MKTAG('c','o','6','4'), mov_read_stco },
4b29ed39 1943{ MKTAG('c','s','l','g'), mov_read_cslg },
1c126b4f
BC
1944{ MKTAG('c','t','t','s'), mov_read_ctts }, /* composition time to sample */
1945{ MKTAG('d','i','n','f'), mov_read_default },
1946{ MKTAG('d','r','e','f'), mov_read_dref },
1947{ MKTAG('e','d','t','s'), mov_read_default },
1948{ MKTAG('e','l','s','t'), mov_read_elst },
1949{ MKTAG('e','n','d','a'), mov_read_enda },
1950{ MKTAG('f','i','e','l'), mov_read_extradata },
1951{ MKTAG('f','t','y','p'), mov_read_ftyp },
1952{ MKTAG('g','l','b','l'), mov_read_glbl },
1953{ MKTAG('h','d','l','r'), mov_read_hdlr },
51c15201 1954{ MKTAG('i','l','s','t'), mov_read_ilst },
1c126b4f
BC
1955{ MKTAG('j','p','2','h'), mov_read_extradata },
1956{ MKTAG('m','d','a','t'), mov_read_mdat },
1957{ MKTAG('m','d','h','d'), mov_read_mdhd },
1958{ MKTAG('m','d','i','a'), mov_read_default },
51c15201 1959{ MKTAG('m','e','t','a'), mov_read_meta },
1c126b4f
BC
1960{ MKTAG('m','i','n','f'), mov_read_default },
1961{ MKTAG('m','o','o','f'), mov_read_moof },
1962{ MKTAG('m','o','o','v'), mov_read_moov },
1963{ MKTAG('m','v','e','x'), mov_read_default },
1964{ MKTAG('m','v','h','d'), mov_read_mvhd },
1965{ MKTAG('S','M','I',' '), mov_read_smi }, /* Sorenson extension ??? */
1966{ MKTAG('a','l','a','c'), mov_read_extradata }, /* alac specific atom */
1967{ MKTAG('a','v','c','C'), mov_read_glbl },
6da54074 1968{ MKTAG('p','a','s','p'), mov_read_pasp },
1c126b4f
BC
1969{ MKTAG('s','t','b','l'), mov_read_default },
1970{ MKTAG('s','t','c','o'), mov_read_stco },
171a3531 1971{ MKTAG('s','t','p','s'), mov_read_stps },
1c126b4f
BC
1972{ MKTAG('s','t','s','c'), mov_read_stsc },
1973{ MKTAG('s','t','s','d'), mov_read_stsd }, /* sample description */
1974{ MKTAG('s','t','s','s'), mov_read_stss }, /* sync sample */
1975{ MKTAG('s','t','s','z'), mov_read_stsz }, /* sample size */
1976{ MKTAG('s','t','t','s'), mov_read_stts },
bd27eed6 1977{ MKTAG('s','t','z','2'), mov_read_stsz }, /* compact sample size */
1c126b4f
BC
1978{ MKTAG('t','k','h','d'), mov_read_tkhd }, /* track header */
1979{ MKTAG('t','f','h','d'), mov_read_tfhd }, /* track fragment header */
1980{ MKTAG('t','r','a','k'), mov_read_trak },
1981{ MKTAG('t','r','a','f'), mov_read_default },
1982{ MKTAG('t','r','e','x'), mov_read_trex },
1983{ MKTAG('t','r','u','n'), mov_read_trun },
86b0affd 1984{ MKTAG('u','d','t','a'), mov_read_default },
1c126b4f
BC
1985{ MKTAG('w','a','v','e'), mov_read_wave },
1986{ MKTAG('e','s','d','s'), mov_read_esds },
1987{ MKTAG('w','i','d','e'), mov_read_wide }, /* place holder */
1988{ MKTAG('c','m','o','v'), mov_read_cmov },
bcfe2ba0 1989{ 0, NULL }
6cea494e
ZK
1990};
1991
c9a65ca8
FB
1992static int mov_probe(AVProbeData *p)
1993{
0e7eed09
FB
1994 unsigned int offset;
1995 uint32_t tag;
2497479f 1996 int score = 0;
3ffe3793 1997
c9a65ca8 1998 /* check file header */
0e7eed09
FB
1999 offset = 0;
2000 for(;;) {
2001 /* ignore invalid offset */
2002 if ((offset + 8) > (unsigned int)p->buf_size)
2497479f 2003 return score;
fead30d4 2004 tag = AV_RL32(p->buf + offset + 4);
0e7eed09 2005 switch(tag) {
2497479f 2006 /* check for obvious tags */
1c126b4f
BC
2007 case MKTAG('j','P',' ',' '): /* jpeg 2000 signature */
2008 case MKTAG('m','o','o','v'):
2009 case MKTAG('m','d','a','t'):
2010 case MKTAG('p','n','o','t'): /* detect movs with preview pics like ew.mov and april.mov */
2011 case MKTAG('u','d','t','a'): /* Packet Video PVAuthor adds this and a lot of more junk */
40e7aaa3 2012 case MKTAG('f','t','y','p'):
3ffe3793 2013 return AVPROBE_SCORE_MAX;
2497479f 2014 /* those are more common words, so rate then a bit less */
1c126b4f
BC
2015 case MKTAG('e','d','i','w'): /* xdcam files have reverted first tags */
2016 case MKTAG('w','i','d','e'):
2017 case MKTAG('f','r','e','e'):
2018 case MKTAG('j','u','n','k'):
2019 case MKTAG('p','i','c','t'):
2497479f 2020 return AVPROBE_SCORE_MAX - 5;
5469b788 2021 case MKTAG(0x82,0x82,0x7f,0x7d):
1c126b4f
BC
2022 case MKTAG('s','k','i','p'):
2023 case MKTAG('u','u','i','d'):
2024 case MKTAG('p','r','f','l'):
fead30d4 2025 offset = AV_RB32(p->buf+offset) + offset;
2497479f
FR
2026 /* if we only find those cause probedata is too small at least rate them */
2027 score = AVPROBE_SCORE_MAX - 50;
0e7eed09
FB
2028 break;
2029 default:
2030 /* unrecognized tag */
2497479f 2031 return score;
0e7eed09 2032 }
3ffe3793 2033 }
2497479f 2034 return score;
c9a65ca8
FB
2035}
2036
a266644f 2037static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
6cea494e 2038{
e4141433 2039 MOVContext *mov = s->priv_data;
899681cd 2040 ByteIOContext *pb = s->pb;
f9900374 2041 int err;
c3e92a6c 2042 MOVAtom atom = { 0, 0, 0 };
6cea494e 2043
6cea494e 2044 mov->fc = s;
117a9190
BC
2045 /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
2046 if(!url_is_streamed(pb))
bb270c08 2047 atom.size = url_fsize(pb);
6cea494e 2048 else
fa22ca22 2049 atom.size = INT64_MAX;
6cea494e 2050
6cea494e 2051 /* check MOV header */
612b5cbb
BC
2052 if ((err = mov_read_default(mov, pb, atom)) < 0) {
2053 av_log(s, AV_LOG_ERROR, "error reading header: %d\n", err);
2054 return err;
2055 }
2056 if (!mov->found_moov) {
2057 av_log(s, AV_LOG_ERROR, "moov atom not found\n");
bb270c08 2058 return -1;
6cea494e 2059 }
0265fe81 2060 dprintf(mov->fc, "on_parse_exit_offset=%lld\n", url_ftell(pb));
4e5ef14f 2061
6cea494e
ZK
2062 return 0;
2063}
2064
5dc5c43b 2065static AVIndexEntry *mov_find_next_sample(AVFormatContext *s, AVStream **st)
6cea494e 2066{
5dc5c43b 2067 AVIndexEntry *sample = NULL;
86d8602f 2068 int64_t best_dts = INT64_MAX;
5dc5c43b 2069 int i;
11f16b66 2070 for (i = 0; i < s->nb_streams; i++) {
69fc436c
RD
2071 AVStream *avst = s->streams[i];
2072 MOVStreamContext *msc = avst->priv_data;
3fe4d5d4 2073 if (msc->pb && msc->current_sample < avst->nb_index_entries) {
69fc436c 2074 AVIndexEntry *current_sample = &avst->index_entries[msc->current_sample];
bbe46bc4 2075 int64_t dts = av_rescale(current_sample->timestamp, AV_TIME_BASE, msc->time_scale);
1c02d96f 2076 dprintf(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
687f35f3
BC
2077 if (!sample || (url_is_streamed(s->pb) && current_sample->pos < sample->pos) ||
2078 (!url_is_streamed(s->pb) &&
221e21b7 2079 ((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb &&
687f35f3 2080 ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
221e21b7 2081 (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) {
b72708f8
BC
2082 sample = current_sample;
2083 best_dts = dts;
5dc5c43b 2084 *st = avst;
86d8602f 2085 }
6cea494e 2086 }
6cea494e 2087 }
5dc5c43b
RD
2088 return sample;
2089}
2090
2091static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
2092{
2093 MOVContext *mov = s->priv_data;
2094 MOVStreamContext *sc;
2095 AVIndexEntry *sample;
2096 AVStream *st = NULL;
2097 int ret;
2098 retry:
2099 sample = mov_find_next_sample(s, &st);
433aeb62
BC
2100 if (!sample) {
2101 mov->found_mdat = 0;
2102 if (!url_is_streamed(s->pb) ||
c3e92a6c 2103 mov_read_default(mov, s->pb, (MOVAtom){ 0, 0, INT64_MAX }) < 0 ||
433aeb62 2104 url_feof(s->pb))
350f2c2c 2105 return AVERROR_EOF;
433aeb62
BC
2106 dprintf(s, "read fragments, offset 0x%llx\n", url_ftell(s->pb));
2107 goto retry;
2108 }
69fc436c 2109 sc = st->priv_data;
b72708f8
BC
2110 /* must be done just before reading, to avoid infinite loop on sample */
2111 sc->current_sample++;
3fe4d5d4
RD
2112
2113 if (st->discard != AVDISCARD_ALL) {
e1c1b0ff
RD
2114 if (url_fseek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
2115 av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
2116 sc->ffindex, sample->pos);
2117 return -1;
2118 }
2119 ret = av_get_packet(sc->pb, pkt, sample->size);
a2f38511
RD
2120 if (ret < 0)
2121 return ret;
e1c1b0ff
RD
2122#if CONFIG_DV_DEMUXER
2123 if (mov->dv_demux && sc->dv_audio_container) {
2124 dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size);
2125 av_free(pkt->data);
2126 pkt->size = 0;
2127 ret = dv_get_packet(mov->dv_demux, pkt);
2128 if (ret < 0)
2129 return ret;
2130 }
312954f0 2131#endif
3fe4d5d4
RD
2132 }
2133
b72708f8
BC
2134 pkt->stream_index = sc->ffindex;
2135 pkt->dts = sample->timestamp;
2136 if (sc->ctts_data) {
bbe46bc4 2137 pkt->pts = pkt->dts + sc->dts_shift + sc->ctts_data[sc->ctts_index].duration;
b72708f8 2138 /* update ctts context */
a234e38d
BC
2139 sc->ctts_sample++;
2140 if (sc->ctts_index < sc->ctts_count &&
2141 sc->ctts_data[sc->ctts_index].count == sc->ctts_sample) {
2142 sc->ctts_index++;
2143 sc->ctts_sample = 0;
b565ea09 2144 }
0c5f76f7
BC
2145 if (sc->wrong_dts)
2146 pkt->dts = AV_NOPTS_VALUE;
b72708f8 2147 } else {
f0f2218d 2148 int64_t next_dts = (sc->current_sample < st->nb_index_entries) ?
e8430214
HG
2149 st->index_entries[sc->current_sample].timestamp : st->duration;
2150 pkt->duration = next_dts - pkt->dts;
b72708f8 2151 pkt->pts = pkt->dts;
b565ea09 2152 }
3fe4d5d4
RD
2153 if (st->discard == AVDISCARD_ALL)
2154 goto retry;
b72708f8
BC
2155 pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? PKT_FLAG_KEY : 0;
2156 pkt->pos = sample->pos;
29c90869
BC
2157 dprintf(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n",
2158 pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
b72708f8
BC
2159 return 0;
2160}
3ffe3793 2161
b72708f8
BC
2162static int mov_seek_stream(AVStream *st, int64_t timestamp, int flags)
2163{
2164 MOVStreamContext *sc = st->priv_data;
2165 int sample, time_sample;
2166 int i;
115329f1 2167
b72708f8 2168 sample = av_index_search_timestamp(st, timestamp, flags);
318c5e05 2169 dprintf(st->codec, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
b72708f8
BC
2170 if (sample < 0) /* not sure what to do */
2171 return -1;
2172 sc->current_sample = sample;
1c02d96f 2173 dprintf(st->codec, "stream %d, found sample %d\n", st->index, sc->current_sample);
b72708f8
BC
2174 /* adjust ctts index */
2175 if (sc->ctts_data) {
2176 time_sample = 0;
2177 for (i = 0; i < sc->ctts_count; i++) {
54a5c719
BC
2178 int next = time_sample + sc->ctts_data[i].count;
2179 if (next > sc->current_sample) {
a234e38d
BC
2180 sc->ctts_index = i;
2181 sc->ctts_sample = sc->current_sample - time_sample;
b72708f8 2182 break;
115329f1 2183 }
54a5c719 2184 time_sample = next;
247d56f5 2185 }
247d56f5 2186 }
b72708f8 2187 return sample;
6cea494e
ZK
2188}
2189
961e0ccd 2190static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
baf25c9d 2191{
b72708f8
BC
2192 AVStream *st;
2193 int64_t seek_timestamp, timestamp;
2194 int sample;
2195 int i;
baf25c9d 2196
b72708f8 2197 if (stream_index >= s->nb_streams)
baf25c9d 2198 return -1;
8dc81a45
BC
2199 if (sample_time < 0)
2200 sample_time = 0;
baf25c9d 2201
b72708f8
BC
2202 st = s->streams[stream_index];
2203 sample = mov_seek_stream(st, sample_time, flags);
2204 if (sample < 0)
baf25c9d 2205 return -1;
baf25c9d 2206
b72708f8
BC
2207 /* adjust seek timestamp to found sample timestamp */
2208 seek_timestamp = st->index_entries[sample].timestamp;
baf25c9d 2209
b72708f8
BC
2210 for (i = 0; i < s->nb_streams; i++) {
2211 st = s->streams[i];
3fe4d5d4 2212 if (stream_index == i)
b72708f8 2213 continue;
baf25c9d 2214
b72708f8
BC
2215 timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
2216 mov_seek_stream(st, timestamp, flags);
115329f1 2217 }
baf25c9d
GC
2218 return 0;
2219}
baf25c9d 2220
a266644f 2221static int mov_read_close(AVFormatContext *s)
6cea494e 2222{
e4141433 2223 MOVContext *mov = s->priv_data;
6c00a9de
BC
2224 int i, j;
2225
2226 for (i = 0; i < s->nb_streams; i++) {
e49da827
BC
2227 AVStream *st = s->streams[i];
2228 MOVStreamContext *sc = st->priv_data;
6c00a9de 2229
7c622eed 2230 av_freep(&sc->ctts_data);
6c00a9de 2231 for (j = 0; j < sc->drefs_count; j++)
221e21b7
BC
2232 av_freep(&sc->drefs[j].path);
2233 av_freep(&sc->drefs);
2234 if (sc->pb && sc->pb != s->pb)
2235 url_fclose(sc->pb);
e49da827
BC
2236
2237 av_freep(&st->codec->palctrl);
4440b118 2238 }
6c00a9de
BC
2239
2240 if (mov->dv_demux) {
2241 for(i = 0; i < mov->dv_fctx->nb_streams; i++) {
b60c0454
BC
2242 av_freep(&mov->dv_fctx->streams[i]->codec);
2243 av_freep(&mov->dv_fctx->streams[i]);
2244 }
2245 av_freep(&mov->dv_fctx);
2246 av_freep(&mov->dv_demux);
2247 }
6c00a9de 2248
61aedb0f 2249 av_freep(&mov->trex_data);
6c00a9de 2250
6cea494e
ZK
2251 return 0;
2252}
2253
ff70e601 2254AVInputFormat mov_demuxer = {
fc5188f3 2255 "mov,mp4,m4a,3gp,3g2,mj2",
bde15e74 2256 NULL_IF_CONFIG_SMALL("QuickTime/MPEG-4/Motion JPEG 2000 format"),
c9a65ca8
FB
2257 sizeof(MOVContext),
2258 mov_probe,
6cea494e
ZK
2259 mov_read_header,
2260 mov_read_packet,
2261 mov_read_close,
baf25c9d 2262 mov_read_seek,
6cea494e 2263};