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[libav.git] / libavformat / mov.c
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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
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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
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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);
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
BC
246{
247 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
248 MOVStreamContext *sc = st->priv_data;
249 int entries, i, j;
250
251 get_be32(pb); // version + flags
252 entries = get_be32(pb);
253 if (entries >= UINT_MAX / sizeof(*sc->drefs))
254 return -1;
221e21b7 255 sc->drefs = av_mallocz(entries * sizeof(*sc->drefs));
0d8f0abf
BC
256 if (!sc->drefs)
257 return AVERROR(ENOMEM);
258 sc->drefs_count = entries;
221e21b7
BC
259
260 for (i = 0; i < sc->drefs_count; i++) {
c3e92a6c 261 MOVDref *dref = &sc->drefs[i];
221e21b7 262 uint32_t size = get_be32(pb);
bc5c918e 263 int64_t next = url_ftell(pb) + size - 4;
221e21b7
BC
264
265 dref->type = get_le32(pb);
266 get_be32(pb); // version + flags
267 dprintf(c->fc, "type %.4s size %d\n", (char*)&dref->type, size);
268
269 if (dref->type == MKTAG('a','l','i','s') && size > 150) {
270 /* macintosh alias record */
271 uint16_t volume_len, len;
272 char volume[28];
273 int16_t type;
274
275 url_fskip(pb, 10);
276
277 volume_len = get_byte(pb);
278 volume_len = FFMIN(volume_len, 27);
279 get_buffer(pb, volume, 27);
280 volume[volume_len] = 0;
281 av_log(c->fc, AV_LOG_DEBUG, "volume %s, len %d\n", volume, volume_len);
282
283 url_fskip(pb, 112);
284
285 for (type = 0; type != -1 && url_ftell(pb) < next; ) {
286 type = get_be16(pb);
287 len = get_be16(pb);
288 av_log(c->fc, AV_LOG_DEBUG, "type %d, len %d\n", type, len);
289 if (len&1)
290 len += 1;
291 if (type == 2) { // absolute path
dbb37657 292 av_free(dref->path);
221e21b7 293 dref->path = av_mallocz(len+1);
2f4568e5
BC
294 if (!dref->path)
295 return AVERROR(ENOMEM);
221e21b7 296 get_buffer(pb, dref->path, len);
dbb7cbf2 297 if (len > volume_len && !strncmp(dref->path, volume, volume_len)) {
221e21b7
BC
298 len -= volume_len;
299 memmove(dref->path, dref->path+volume_len, len);
300 dref->path[len] = 0;
301 }
302 for (j = 0; j < len; j++)
303 if (dref->path[j] == ':')
304 dref->path[j] = '/';
305 av_log(c->fc, AV_LOG_DEBUG, "path %s\n", dref->path);
306 } else
307 url_fskip(pb, len);
308 }
309 }
310 url_fseek(pb, next, SEEK_SET);
311 }
312 return 0;
313}
314
c3e92a6c 315static int mov_read_hdlr(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
6cea494e 316{
fefe43ff 317 AVStream *st;
0c1a9eda 318 uint32_t type;
0c1a9eda 319 uint32_t ctype;
b6a17df4 320
fefe43ff
AC
321 if (c->fc->nb_streams < 1) // meta before first trak
322 return 0;
323
324 st = c->fc->streams[c->fc->nb_streams-1];
325
6cea494e 326 get_byte(pb); /* version */
23f08617 327 get_be24(pb); /* flags */
6cea494e
ZK
328
329 /* component type */
330 ctype = get_le32(pb);
331 type = get_le32(pb); /* component subtype */
332
9bf1b268
BC
333 dprintf(c->fc, "ctype= %.4s (0x%08x)\n", (char*)&ctype, ctype);
334 dprintf(c->fc, "stype= %.4s\n", (char*)&type);
2229a5c6 335
37ffe34b 336 if (type == MKTAG('v','i','d','e'))
73920f07 337 st->codec->codec_type = CODEC_TYPE_VIDEO;
1c126b4f 338 else if(type == MKTAG('s','o','u','n'))
73920f07 339 st->codec->codec_type = CODEC_TYPE_AUDIO;
1c126b4f 340 else if(type == MKTAG('m','1','a',' '))
95a07973 341 st->codec->codec_id = CODEC_ID_MP2;
f05783c2 342 else if(type == MKTAG('s','u','b','p'))
8cb97693 343 st->codec->codec_type = CODEC_TYPE_SUBTITLE;
f05783c2 344
6cea494e
ZK
345 get_be32(pb); /* component manufacture */
346 get_be32(pb); /* component flags */
347 get_be32(pb); /* component flags mask */
348
5ca1d879 349 if(atom.size <= 24)
6cea494e 350 return 0; /* nothing left to read */
5cd62665 351
3c13647a 352 url_fskip(pb, atom.size - (url_ftell(pb) - atom.offset));
6cea494e
ZK
353 return 0;
354}
355
9e40addd 356static int mp4_read_descr_len(ByteIOContext *pb)
0e7eed09 357{
5cd62665 358 int len = 0;
5ca1d879
ZK
359 int count = 4;
360 while (count--) {
5cd62665 361 int c = get_byte(pb);
bb270c08
DB
362 len = (len << 7) | (c & 0x7f);
363 if (!(c & 0x80))
364 break;
0e7eed09
FB
365 }
366 return len;
367}
368
9e40addd 369static int mp4_read_descr(MOVContext *c, ByteIOContext *pb, int *tag)
0e7eed09
FB
370{
371 int len;
372 *tag = get_byte(pb);
9e40addd 373 len = mp4_read_descr_len(pb);
318c5e05 374 dprintf(c->fc, "MPEG4 description: tag=0x%02x len=%d\n", *tag, len);
0e7eed09
FB
375 return len;
376}
377
0b07ac42
BC
378#define MP4ESDescrTag 0x03
379#define MP4DecConfigDescrTag 0x04
380#define MP4DecSpecificDescrTag 0x05
381
1dec3994 382static const AVCodecTag mp4_audio_types[] = {
5c3d507f
AC
383 { CODEC_ID_MP3ON4, AOT_PS }, /* old mp3on4 draft */
384 { CODEC_ID_MP3ON4, AOT_L1 }, /* layer 1 */
385 { CODEC_ID_MP3ON4, AOT_L2 }, /* layer 2 */
386 { CODEC_ID_MP3ON4, AOT_L3 }, /* layer 3 */
b24bbbb4 387 { CODEC_ID_MP4ALS, AOT_ALS }, /* MPEG-4 ALS */
5c3d507f 388 { CODEC_ID_NONE, AOT_NULL },
1dec3994
BC
389};
390
c3e92a6c 391static int mov_read_esds(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
5cd62665 392{
5cd62665 393 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
5cd62665 394 int tag, len;
b6a17df4 395
5cd62665 396 get_be32(pb); /* version + flags */
9e40addd 397 len = mp4_read_descr(c, pb, &tag);
5cd62665 398 if (tag == MP4ESDescrTag) {
bb270c08
DB
399 get_be16(pb); /* ID */
400 get_byte(pb); /* priority */
5cd62665 401 } else
bb270c08 402 get_be16(pb); /* ID */
5cd62665 403
9e40addd 404 len = mp4_read_descr(c, pb, &tag);
5cd62665 405 if (tag == MP4DecConfigDescrTag) {
0b07ac42
BC
406 int object_type_id = get_byte(pb);
407 get_byte(pb); /* stream type */
408 get_be24(pb); /* buffer size db */
409 get_be32(pb); /* max bitrate */
410 get_be32(pb); /* avg bitrate */
411
412 st->codec->codec_id= codec_get_id(ff_mp4_obj_type, object_type_id);
413 dprintf(c->fc, "esds object type id %d\n", object_type_id);
9e40addd 414 len = mp4_read_descr(c, pb, &tag);
bb270c08 415 if (tag == MP4DecSpecificDescrTag) {
318c5e05 416 dprintf(c->fc, "Specific MPEG4 header len=%d\n", len);
852859ff
BC
417 if((uint64_t)len > (1<<30))
418 return -1;
9a630c25 419 st->codec->extradata = av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
b014dd76
BC
420 if (!st->codec->extradata)
421 return AVERROR(ENOMEM);
17871a02
BC
422 get_buffer(pb, st->codec->extradata, len);
423 st->codec->extradata_size = len;
1dec3994
BC
424 if (st->codec->codec_id == CODEC_ID_AAC) {
425 MPEG4AudioConfig cfg;
426 ff_mpeg4audio_get_config(&cfg, st->codec->extradata,
427 st->codec->extradata_size);
391872e4 428 if (cfg.chan_config > 7)
45a97d30
BC
429 return -1;
430 st->codec->channels = ff_mpeg4audio_channels[cfg.chan_config];
431 if (cfg.object_type == 29 && cfg.sampling_index < 3) // old mp3on4
432 st->codec->sample_rate = ff_mpa_freq_tab[cfg.sampling_index];
433 else
434 st->codec->sample_rate = cfg.sample_rate; // ext sample rate ?
435 dprintf(c->fc, "mp4a config channels %d obj %d ext obj %d "
436 "sample rate %d ext sample rate %d\n", st->codec->channels,
437 cfg.object_type, cfg.ext_object_type,
438 cfg.sample_rate, cfg.ext_sample_rate);
1dec3994
BC
439 if (!(st->codec->codec_id = codec_get_id(mp4_audio_types,
440 cfg.object_type)))
441 st->codec->codec_id = CODEC_ID_AAC;
17871a02 442 }
bb270c08 443 }
5cd62665 444 }
5cd62665
ZK
445 return 0;
446}
447
6da54074
BC
448static int mov_read_pasp(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
449{
450 const int num = get_be32(pb);
451 const int den = get_be32(pb);
452 AVStream * const st = c->fc->streams[c->fc->nb_streams-1];
453 if (den != 0) {
f53ee312
BC
454 if ((st->sample_aspect_ratio.den != 1 || st->sample_aspect_ratio.num) && // default
455 (den != st->sample_aspect_ratio.den || num != st->sample_aspect_ratio.num))
6da54074 456 av_log(c->fc, AV_LOG_WARNING,
f53ee312
BC
457 "sample aspect ratio already set to %d:%d, overriding by 'pasp' atom\n",
458 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den);
6da54074
BC
459 st->sample_aspect_ratio.num = num;
460 st->sample_aspect_ratio.den = den;
461 }
462 return 0;
463}
464
5ca1d879 465/* this atom contains actual media data */
c3e92a6c 466static int mov_read_mdat(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
6cea494e 467{
5ca1d879
ZK
468 if(atom.size == 0) /* wrong one (MP4) */
469 return 0;
470 c->found_mdat=1;
5ca1d879
ZK
471 return 0; /* now go for moov */
472}
473
c3e92a6c 474static int mov_read_ftyp(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
4ea28253
BC
475{
476 uint32_t type = get_le32(pb);
477
152e9a43
BC
478 if (type != MKTAG('q','t',' ',' '))
479 c->isom = 1;
a512446e 480 av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
4ea28253
BC
481 get_be32(pb); /* minor version */
482 url_fskip(pb, atom.size - 8);
483 return 0;
484}
485
5ca1d879 486/* this atom should contain all header atoms */
c3e92a6c 487static int mov_read_moov(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
5ca1d879 488{
9cf0419b
PI
489 if (mov_read_default(c, pb, atom) < 0)
490 return -1;
5ca1d879
ZK
491 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
492 /* so we don't parse the whole file if over a network */
493 c->found_moov=1;
5ca1d879
ZK
494 return 0; /* now go for mdat */
495}
496
c3e92a6c 497static int mov_read_moof(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
61aedb0f
BC
498{
499 c->fragment.moof_offset = url_ftell(pb) - 8;
500 dprintf(c->fc, "moof offset %llx\n", c->fragment.moof_offset);
501 return mov_read_default(c, pb, atom);
502}
5ca1d879 503
c3e92a6c 504static int mov_read_mdhd(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
5ca1d879 505{
f444b977 506 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
e4141433 507 MOVStreamContext *sc = st->priv_data;
f444b977 508 int version = get_byte(pb);
49674dd0 509 char language[4] = {0};
dce25564 510 unsigned lang;
5ca1d879 511
b9a87c4d 512 if (version > 1)
7e627332 513 return -1; /* unsupported */
5ca1d879 514
23f08617 515 get_be24(pb); /* flags */
f444b977
BC
516 if (version == 1) {
517 get_be64(pb);
518 get_be64(pb);
519 } else {
520 get_be32(pb); /* creation time */
521 get_be32(pb); /* modification time */
522 }
5ca1d879 523
f444b977
BC
524 sc->time_scale = get_be32(pb);
525 st->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
5ca1d879 526
b9a87c4d 527 lang = get_be16(pb); /* language */
49674dd0
AJ
528 if (ff_mov_lang_to_iso639(lang, language))
529 av_metadata_set(&st->metadata, "language", language);
5ca1d879
ZK
530 get_be16(pb); /* quality */
531
532 return 0;
533}
534
c3e92a6c 535static int mov_read_mvhd(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
5ca1d879 536{
1175561e 537 int version = get_byte(pb); /* version */
23f08617 538 get_be24(pb); /* flags */
5ca1d879 539
1175561e
BC
540 if (version == 1) {
541 get_be64(pb);
542 get_be64(pb);
543 } else {
544 get_be32(pb); /* creation time */
545 get_be32(pb); /* modification time */
546 }
5ca1d879 547 c->time_scale = get_be32(pb); /* time scale */
f8c18cd7
BC
548
549 dprintf(c->fc, "time scale = %i\n", c->time_scale);
550
1175561e 551 c->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
5ca1d879
ZK
552 get_be32(pb); /* preferred scale */
553
554 get_be16(pb); /* preferred volume */
555
556 url_fskip(pb, 10); /* reserved */
557
558 url_fskip(pb, 36); /* display matrix */
559
560 get_be32(pb); /* preview time */
561 get_be32(pb); /* preview duration */
562 get_be32(pb); /* poster time */
563 get_be32(pb); /* selection time */
564 get_be32(pb); /* selection duration */
565 get_be32(pb); /* current time */
566 get_be32(pb); /* next track ID */
567
568 return 0;
569}
570
c3e92a6c 571static int mov_read_smi(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
9ed83b0a
ZK
572{
573 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
574
568e18b1
MN
575 if((uint64_t)atom.size > (1<<30))
576 return -1;
115329f1 577
9ed83b0a
ZK
578 // currently SVQ3 decoder expect full STSD header - so let's fake it
579 // this should be fixed and just SMI header should be passed
01f4895c 580 av_free(st->codec->extradata);
b014dd76
BC
581 st->codec->extradata = av_mallocz(atom.size + 0x5a + FF_INPUT_BUFFER_PADDING_SIZE);
582 if (!st->codec->extradata)
583 return AVERROR(ENOMEM);
17871a02
BC
584 st->codec->extradata_size = 0x5a + atom.size;
585 memcpy(st->codec->extradata, "SVQ3", 4); // fake
586 get_buffer(pb, st->codec->extradata + 0x5a, atom.size);
587 dprintf(c->fc, "Reading SMI %"PRId64" %s\n", atom.size, st->codec->extradata + 0x5a);
9ed83b0a
ZK
588 return 0;
589}
5ca1d879 590
c3e92a6c 591static int mov_read_enda(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
de23f234
BC
592{
593 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
594 int little_endian = get_be16(pb);
595
fa50a027
BC
596 dprintf(c->fc, "enda %d\n", little_endian);
597 if (little_endian == 1) {
de23f234
BC
598 switch (st->codec->codec_id) {
599 case CODEC_ID_PCM_S24BE:
600 st->codec->codec_id = CODEC_ID_PCM_S24LE;
601 break;
602 case CODEC_ID_PCM_S32BE:
603 st->codec->codec_id = CODEC_ID_PCM_S32LE;
604 break;
a1ef2c4b
PR
605 case CODEC_ID_PCM_F32BE:
606 st->codec->codec_id = CODEC_ID_PCM_F32LE;
607 break;
608 case CODEC_ID_PCM_F64BE:
609 st->codec->codec_id = CODEC_ID_PCM_F64LE;
610 break;
de23f234
BC
611 default:
612 break;
613 }
614 }
615 return 0;
616}
617
014a5102 618/* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
c3e92a6c 619static int mov_read_extradata(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
de23f234 620{
27134437
BC
621 AVStream *st;
622 uint64_t size;
68bc33fa 623 uint8_t *buf;
27134437
BC
624
625 if (c->fc->nb_streams < 1) // will happen with jp2 files
626 return 0;
627 st= c->fc->streams[c->fc->nb_streams-1];
628 size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
68bc33fa 629 if(size > INT_MAX || (uint64_t)atom.size > INT_MAX)
014a5102 630 return -1;
68bc33fa
BC
631 buf= av_realloc(st->codec->extradata, size);
632 if(!buf)
633 return -1;
634 st->codec->extradata= buf;
635 buf+= st->codec->extradata_size;
636 st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE;
637 AV_WB32( buf , atom.size + 8);
638 AV_WL32( buf + 4, atom.type);
639 get_buffer(pb, buf + 8, atom.size);
de23f234
BC
640 return 0;
641}
642
c3e92a6c 643static int mov_read_wave(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
d9b1c197
RT
644{
645 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
646
647 if((uint64_t)atom.size > (1<<30))
648 return -1;
115329f1 649
3840147e
MN
650 if (st->codec->codec_id == CODEC_ID_QDM2) {
651 // pass all frma atom to codec, needed at least for QDM2
652 av_free(st->codec->extradata);
b014dd76
BC
653 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
654 if (!st->codec->extradata)
655 return AVERROR(ENOMEM);
3840147e 656 st->codec->extradata_size = atom.size;
b014dd76 657 get_buffer(pb, st->codec->extradata, atom.size);
3840147e 658 } else if (atom.size > 8) { /* to read frma, esds atoms */
9cf0419b
PI
659 if (mov_read_default(c, pb, atom) < 0)
660 return -1;
5c72cad8 661 } else
bb270c08 662 url_fskip(pb, atom.size);
d9b1c197
RT
663 return 0;
664}
665
bde24601
BC
666/**
667 * This function reads atom content and puts data in extradata without tag
668 * nor size unlike mov_read_extradata.
669 */
c3e92a6c 670static int mov_read_glbl(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
169eb021
MM
671{
672 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
673
568e18b1
MN
674 if((uint64_t)atom.size > (1<<30))
675 return -1;
676
01f4895c 677 av_free(st->codec->extradata);
b014dd76
BC
678 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
679 if (!st->codec->extradata)
680 return AVERROR(ENOMEM);
01f4895c 681 st->codec->extradata_size = atom.size;
b014dd76 682 get_buffer(pb, st->codec->extradata, atom.size);
169eb021
MM
683 return 0;
684}
685
c3e92a6c 686static int mov_read_stco(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
5ca1d879
ZK
687{
688 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
e4141433 689 MOVStreamContext *sc = st->priv_data;
568e18b1 690 unsigned int i, entries;
5ca1d879 691
5ca1d879 692 get_byte(pb); /* version */
23f08617 693 get_be24(pb); /* flags */
5ca1d879
ZK
694
695 entries = get_be32(pb);
115329f1 696
568e18b1
MN
697 if(entries >= UINT_MAX/sizeof(int64_t))
698 return -1;
115329f1 699
9a630c25 700 sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
5ca1d879 701 if (!sc->chunk_offsets)
0d8f0abf
BC
702 return AVERROR(ENOMEM);
703 sc->chunk_count = entries;
704
37ffe34b
BC
705 if (atom.type == MKTAG('s','t','c','o'))
706 for(i=0; i<entries; i++)
5ca1d879 707 sc->chunk_offsets[i] = get_be32(pb);
37ffe34b
BC
708 else if (atom.type == MKTAG('c','o','6','4'))
709 for(i=0; i<entries; i++)
5ca1d879 710 sc->chunk_offsets[i] = get_be64(pb);
37ffe34b 711 else
5ca1d879 712 return -1;
115329f1 713
5ca1d879
ZK
714 return 0;
715}
716
2288834f
BC
717/**
718 * Compute codec id for 'lpcm' tag.
719 * See CoreAudioTypes and AudioStreamBasicDescription at Apple.
720 */
fb65d2ca 721static enum CodecID mov_get_lpcm_codec_id(int bps, int flags)
2288834f
BC
722{
723 if (flags & 1) { // floating point
724 if (flags & 2) { // big endian
725 if (bps == 32) return CODEC_ID_PCM_F32BE;
7e4b3fb8 726 else if (bps == 64) return CODEC_ID_PCM_F64BE;
2288834f 727 } else {
7e4b3fb8
BC
728 if (bps == 32) return CODEC_ID_PCM_F32LE;
729 else if (bps == 64) return CODEC_ID_PCM_F64LE;
2288834f
BC
730 }
731 } else {
732 if (flags & 2) {
733 if (bps == 8)
734 // signed integer
735 if (flags & 4) return CODEC_ID_PCM_S8;
736 else return CODEC_ID_PCM_U8;
737 else if (bps == 16) return CODEC_ID_PCM_S16BE;
738 else if (bps == 24) return CODEC_ID_PCM_S24BE;
739 else if (bps == 32) return CODEC_ID_PCM_S32BE;
740 } else {
741 if (bps == 8)
742 if (flags & 4) return CODEC_ID_PCM_S8;
743 else return CODEC_ID_PCM_U8;
021b8ae3 744 else if (bps == 16) return CODEC_ID_PCM_S16LE;
2288834f
BC
745 else if (bps == 24) return CODEC_ID_PCM_S24LE;
746 else if (bps == 32) return CODEC_ID_PCM_S32LE;
747 }
748 }
fb65d2ca 749 return CODEC_ID_NONE;
2288834f
BC
750}
751
c3e92a6c 752static int mov_read_stsd(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
5ca1d879
ZK
753{
754 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
e4141433 755 MOVStreamContext *sc = st->priv_data;
baf9fb32 756 int j, entries, pseudo_stream_id;
b595afaa 757
6cea494e 758 get_byte(pb); /* version */
23f08617 759 get_be24(pb); /* flags */
6cea494e 760
6cea494e
ZK
761 entries = get_be32(pb);
762
117a9190
BC
763 for(pseudo_stream_id=0; pseudo_stream_id<entries; pseudo_stream_id++) {
764 //Parsing Sample description table
b6a17df4 765 enum CodecID id;
221e21b7 766 int dref_id;
c3e92a6c 767 MOVAtom a = { 0, 0, 0 };
bc5c918e 768 int64_t start_pos = url_ftell(pb);
bb270c08 769 int size = get_be32(pb); /* size */
baf9fb32 770 uint32_t format = get_le32(pb); /* data format */
5cd62665 771
6cea494e
ZK
772 get_be32(pb); /* reserved */
773 get_be16(pb); /* reserved */
221e21b7 774 dref_id = get_be16(pb);
0e7eed09 775
744a9c75 776 if (st->codec->codec_tag &&
978677a7 777 st->codec->codec_tag != format &&
744a9c75 778 (c->fc->video_codec_id ? codec_get_id(codec_movvideo_tags, format) != c->fc->video_codec_id
1c126b4f 779 : st->codec->codec_tag != MKTAG('j','p','e','g'))
744a9c75 780 ){
7ce68923
DB
781 /* Multiple fourcc, we skip JPEG. This is not correct, we should
782 * export it as a separate AVStream but this needs a few changes
783 * in the MOV demuxer, patch welcome. */
285a3da9 784 av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n");
e7cc4b52
BC
785 url_fskip(pb, size - (url_ftell(pb) - start_pos));
786 continue;
787 }
978677a7 788 sc->pseudo_stream_id = st->codec->codec_tag ? -1 : pseudo_stream_id;
221e21b7 789 sc->dref_id= dref_id;
e7cc4b52 790
bb270c08 791 st->codec->codec_tag = format;
1e5f5e3b 792 id = codec_get_id(codec_movaudio_tags, format);
1c126b4f 793 if (id<=0 && (format&0xFFFF) == 'm'+('s'<<8))
bca7db35
MN
794 id = codec_get_id(codec_wav_tags, bswap_32(format)&0xFFFF);
795
48855b26 796 if (st->codec->codec_type != CODEC_TYPE_VIDEO && id > 0) {
99487f42 797 st->codec->codec_type = CODEC_TYPE_AUDIO;
48855b26 798 } else if (st->codec->codec_type != CODEC_TYPE_AUDIO && /* do not overwrite codec type */
1c126b4f 799 format && format != MKTAG('m','p','4','s')) { /* skip old asf mpeg4 tag */
1e5f5e3b 800 id = codec_get_id(codec_movvideo_tags, format);
99487f42 801 if (id <= 0)
de23f234 802 id = codec_get_id(codec_bmp_tags, format);
99487f42
BC
803 if (id > 0)
804 st->codec->codec_type = CODEC_TYPE_VIDEO;
1e3c9307
MN
805 else if(st->codec->codec_type == CODEC_TYPE_DATA){
806 id = codec_get_id(ff_codec_movsubtitle_tags, format);
807 if(id > 0)
808 st->codec->codec_type = CODEC_TYPE_SUBTITLE;
809 }
99487f42
BC
810 }
811
29c90869
BC
812 dprintf(c->fc, "size=%d 4CC= %c%c%c%c codec_type=%d\n", size,
813 (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff,
814 (format >> 24) & 0xff, st->codec->codec_type);
a20da52c 815
99487f42 816 if(st->codec->codec_type==CODEC_TYPE_VIDEO) {
baf9fb32
BC
817 uint8_t codec_name[32];
818 unsigned int color_depth;
819 int color_greyscale;
baf9fb32 820
01f4895c 821 st->codec->codec_id = id;
6cea494e
ZK
822 get_be16(pb); /* version */
823 get_be16(pb); /* revision level */
824 get_be32(pb); /* vendor */
825 get_be32(pb); /* temporal quality */
94472c1d 826 get_be32(pb); /* spatial quality */
3cb4ee51
BC
827
828 st->codec->width = get_be16(pb); /* width */
829 st->codec->height = get_be16(pb); /* height */
830
6cea494e
ZK
831 get_be32(pb); /* horiz resolution */
832 get_be32(pb); /* vert resolution */
833 get_be32(pb); /* data size, always 0 */
43612ffe 834 get_be16(pb); /* frames per samples */
f8c18cd7 835
eb034aca 836 get_buffer(pb, codec_name, 32); /* codec name, pascal string */
576f1445
BC
837 if (codec_name[0] <= 31) {
838 memcpy(st->codec->codec_name, &codec_name[1],codec_name[0]);
839 st->codec->codec_name[codec_name[0]] = 0;
840 }
5cd62665 841
dd1c8f3e 842 st->codec->bits_per_coded_sample = get_be16(pb); /* depth */
01f4895c 843 st->codec->color_table_id = get_be16(pb); /* colortable id */
0de2157f 844 dprintf(c->fc, "depth %d, ctab id %d\n",
dd1c8f3e 845 st->codec->bits_per_coded_sample, st->codec->color_table_id);
b595afaa 846 /* figure out the palette situation */
dd1c8f3e
LA
847 color_depth = st->codec->bits_per_coded_sample & 0x1F;
848 color_greyscale = st->codec->bits_per_coded_sample & 0x20;
b595afaa
MM
849
850 /* if the depth is 2, 4, or 8 bpp, file is palettized */
115329f1 851 if ((color_depth == 2) || (color_depth == 4) ||
b595afaa 852 (color_depth == 8)) {
47e1d7ef
BC
853 /* for palette traversal */
854 unsigned int color_start, color_count, color_end;
855 unsigned char r, g, b;
856
e49da827 857 st->codec->palctrl = av_malloc(sizeof(*st->codec->palctrl));
b595afaa 858 if (color_greyscale) {
47e1d7ef 859 int color_index, color_dec;
b595afaa 860 /* compute the greyscale palette */
dd1c8f3e 861 st->codec->bits_per_coded_sample = color_depth;
b595afaa
MM
862 color_count = 1 << color_depth;
863 color_index = 255;
864 color_dec = 256 / (color_count - 1);
865 for (j = 0; j < color_count; j++) {
866 r = g = b = color_index;
e49da827 867 st->codec->palctrl->palette[j] =
b595afaa
MM
868 (r << 16) | (g << 8) | (b);
869 color_index -= color_dec;
870 if (color_index < 0)
871 color_index = 0;
872 }
71f36235 873 } else if (st->codec->color_table_id) {
47e1d7ef 874 const uint8_t *color_table;
b595afaa
MM
875 /* if flag bit 3 is set, use the default palette */
876 color_count = 1 << color_depth;
877 if (color_depth == 2)
a90466f7 878 color_table = ff_qt_default_palette_4;
b595afaa 879 else if (color_depth == 4)
a90466f7 880 color_table = ff_qt_default_palette_16;
b595afaa 881 else
a90466f7 882 color_table = ff_qt_default_palette_256;
b595afaa
MM
883
884 for (j = 0; j < color_count; j++) {
2121b160
RB
885 r = color_table[j * 3 + 0];
886 g = color_table[j * 3 + 1];
887 b = color_table[j * 3 + 2];
e49da827 888 st->codec->palctrl->palette[j] =
b595afaa
MM
889 (r << 16) | (g << 8) | (b);
890 }
b595afaa 891 } else {
b595afaa
MM
892 /* load the palette from the file */
893 color_start = get_be32(pb);
894 color_count = get_be16(pb);
895 color_end = get_be16(pb);
8b35bd80
MM
896 if ((color_start <= 255) &&
897 (color_end <= 255)) {
9de2919c
MM
898 for (j = color_start; j <= color_end; j++) {
899 /* each R, G, or B component is 16 bits;
900 * only use the top 8 bits; skip alpha bytes
901 * up front */
902 get_byte(pb);
903 get_byte(pb);
904 r = get_byte(pb);
905 get_byte(pb);
906 g = get_byte(pb);
907 get_byte(pb);
908 b = get_byte(pb);
909 get_byte(pb);
e49da827 910 st->codec->palctrl->palette[j] =
9de2919c 911 (r << 16) | (g << 8) | (b);
8b35bd80 912 }
b595afaa
MM
913 }
914 }
01f4895c 915 st->codec->palctrl->palette_changed = 1;
e49da827 916 }
de23f234 917 } else if(st->codec->codec_type==CODEC_TYPE_AUDIO) {
aaef2bb3 918 int bits_per_sample, flags;
de23f234 919 uint16_t version = get_be16(pb);
b595afaa 920
99487f42 921 st->codec->codec_id = id;
de23f234
BC
922 get_be16(pb); /* revision level */
923 get_be32(pb); /* vendor */
6d6d7970 924
de23f234 925 st->codec->channels = get_be16(pb); /* channel count */
318c5e05 926 dprintf(c->fc, "audio channels %d\n", st->codec->channels);
dd1c8f3e 927 st->codec->bits_per_coded_sample = get_be16(pb); /* sample size */
de23f234 928
77c75437 929 sc->audio_cid = get_be16(pb);
de23f234
BC
930 get_be16(pb); /* packet size = 0 */
931
932 st->codec->sample_rate = ((get_be32(pb) >> 16));
933
5ef3ad59
BC
934 //Read QT version 1 fields. In version 0 these do not exist.
935 dprintf(c->fc, "version =%d, isom =%d\n",version,c->isom);
936 if(!c->isom) {
937 if(version==1) {
938 sc->samples_per_frame = get_be32(pb);
939 get_be32(pb); /* bytes per packet */
940 sc->bytes_per_frame = get_be32(pb);
941 get_be32(pb); /* bytes per sample */
942 } else if(version==2) {
943 get_be32(pb); /* sizeof struct only */
944 st->codec->sample_rate = av_int2dbl(get_be64(pb)); /* float 64 */
945 st->codec->channels = get_be32(pb);
946 get_be32(pb); /* always 0x7F000000 */
dd1c8f3e 947 st->codec->bits_per_coded_sample = get_be32(pb); /* bits per channel if sound is uncompressed */
aaef2bb3 948 flags = get_be32(pb); /* lcpm format specific flag */
9184d53a
BC
949 sc->bytes_per_frame = get_be32(pb); /* bytes per audio packet if constant */
950 sc->samples_per_frame = get_be32(pb); /* lpcm frames per audio packet if constant */
2288834f 951 if (format == MKTAG('l','p','c','m'))
dd1c8f3e 952 st->codec->codec_id = mov_get_lpcm_codec_id(st->codec->bits_per_coded_sample, flags);
5ef3ad59
BC
953 }
954 }
955
de23f234 956 switch (st->codec->codec_id) {
b72708f8
BC
957 case CODEC_ID_PCM_S8:
958 case CODEC_ID_PCM_U8:
dd1c8f3e 959 if (st->codec->bits_per_coded_sample == 16)
b72708f8
BC
960 st->codec->codec_id = CODEC_ID_PCM_S16BE;
961 break;
0dd39bfe 962 case CODEC_ID_PCM_S16LE:
de23f234 963 case CODEC_ID_PCM_S16BE:
dd1c8f3e 964 if (st->codec->bits_per_coded_sample == 8)
de23f234 965 st->codec->codec_id = CODEC_ID_PCM_S8;
dd1c8f3e 966 else if (st->codec->bits_per_coded_sample == 24)
6b477e1b
BC
967 st->codec->codec_id =
968 st->codec->codec_id == CODEC_ID_PCM_S16BE ?
969 CODEC_ID_PCM_S24BE : CODEC_ID_PCM_S24LE;
de23f234 970 break;
53152765
BC
971 /* set values for old format before stsd version 1 appeared */
972 case CODEC_ID_MACE3:
973 sc->samples_per_frame = 6;
974 sc->bytes_per_frame = 2*st->codec->channels;
975 break;
976 case CODEC_ID_MACE6:
977 sc->samples_per_frame = 6;
978 sc->bytes_per_frame = 1*st->codec->channels;
979 break;
980 case CODEC_ID_ADPCM_IMA_QT:
981 sc->samples_per_frame = 64;
982 sc->bytes_per_frame = 34*st->codec->channels;
983 break;
cc326d2b
BC
984 case CODEC_ID_GSM:
985 sc->samples_per_frame = 160;
986 sc->bytes_per_frame = 33;
987 break;
de23f234
BC
988 default:
989 break;
6d6d7970 990 }
14342fd5 991
9770089d
BC
992 bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
993 if (bits_per_sample) {
dd1c8f3e 994 st->codec->bits_per_coded_sample = bits_per_sample;
9770089d
BC
995 sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
996 }
cc8d87b7 997 } else if(st->codec->codec_type==CODEC_TYPE_SUBTITLE){
58e9f2ed
DC
998 // ttxt stsd contains display flags, justification, background
999 // color, fonts, and default styles, so fake an atom to read it
1000 MOVAtom fake_atom = { .size = size - (url_ftell(pb) - start_pos) };
fb9ac654 1001 if (format != AV_RL32("mp4s")) // mp4s contains a regular esds atom
3dd36041 1002 mov_read_glbl(c, pb, fake_atom);
cc8d87b7 1003 st->codec->codec_id= id;
6cdbff63
DC
1004 st->codec->width = sc->width;
1005 st->codec->height = sc->height;
de23f234
BC
1006 } else {
1007 /* other codec type, just skip (rtp, mp4s, tmcd ...) */
1008 url_fskip(pb, size - (url_ftell(pb) - start_pos));
6cea494e 1009 }
de23f234
BC
1010 /* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */
1011 a.size = size - (url_ftell(pb) - start_pos);
9cf0419b
PI
1012 if (a.size > 8) {
1013 if (mov_read_default(c, pb, a) < 0)
1014 return -1;
1015 } else if (a.size > 0)
de23f234 1016 url_fskip(pb, a.size);
6cea494e 1017 }
115329f1 1018
60f5c96e 1019 if(st->codec->codec_type==CODEC_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1)
302c389e 1020 st->codec->sample_rate= sc->time_scale;
e31bd3e3 1021
d00f8e17 1022 /* special codec parameters handling */
e31bd3e3 1023 switch (st->codec->codec_id) {
b250f9c6 1024#if CONFIG_DV_DEMUXER
b60c0454 1025 case CODEC_ID_DVAUDIO:
8e2fd8e1 1026 c->dv_fctx = avformat_alloc_context();
b60c0454
BC
1027 c->dv_demux = dv_init_demux(c->dv_fctx);
1028 if (!c->dv_demux) {
1029 av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
1030 return -1;
1031 }
1032 sc->dv_audio_container = 1;
1033 st->codec->codec_id = CODEC_ID_PCM_S16LE;
1034 break;
989ac5a6 1035#endif
b95319a2 1036 /* no ifdef since parameters are always those */
3f78a3a9 1037 case CODEC_ID_QCELP:
17ad7b24
BC
1038 // force sample rate for qcelp when not stored in mov
1039 if (st->codec->codec_tag != MKTAG('Q','c','l','p'))
1040 st->codec->sample_rate = 8000;
73b458e3 1041 st->codec->frame_size= 160;
061f407e 1042 st->codec->channels= 1; /* really needed */
73b458e3 1043 break;
b95319a2 1044 case CODEC_ID_AMR_NB:
aeb62788 1045 case CODEC_ID_AMR_WB:
cfb5a2ab 1046 st->codec->frame_size= sc->samples_per_frame;
b95319a2 1047 st->codec->channels= 1; /* really needed */
f06188d5 1048 /* force sample rate for amr, stsd in 3gp does not store sample rate */
5b9ce252 1049 if (st->codec->codec_id == CODEC_ID_AMR_NB)
f06188d5 1050 st->codec->sample_rate = 8000;
5b9ce252
BC
1051 else if (st->codec->codec_id == CODEC_ID_AMR_WB)
1052 st->codec->sample_rate = 16000;
b95319a2 1053 break;
a41104f8 1054 case CODEC_ID_MP2:
c59f24e6 1055 case CODEC_ID_MP3:
95a07973 1056 st->codec->codec_type = CODEC_TYPE_AUDIO; /* force type after stsd for m1a hdlr */
57004ff1 1057 st->need_parsing = AVSTREAM_PARSE_FULL;
a41104f8 1058 break;
5610f20e 1059 case CODEC_ID_GSM:
74e9b9ae
BC
1060 case CODEC_ID_ADPCM_MS:
1061 case CODEC_ID_ADPCM_IMA_WAV:
1062 st->codec->block_align = sc->bytes_per_frame;
1063 break;
be511925 1064 case CODEC_ID_ALAC:
a1532824 1065 if (st->codec->extradata_size == 36) {
364df7b7
BC
1066 st->codec->frame_size = AV_RB32(st->codec->extradata+12);
1067 st->codec->channels = AV_RB8 (st->codec->extradata+21);
a1532824 1068 }
be511925 1069 break;
e31bd3e3
BC
1070 default:
1071 break;
1072 }
5cd62665 1073
6cea494e
ZK
1074 return 0;
1075}
1076
c3e92a6c 1077static int mov_read_stsc(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
6cea494e 1078{
5ca1d879 1079 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
e4141433 1080 MOVStreamContext *sc = st->priv_data;
568e18b1 1081 unsigned int i, entries;
b6a17df4 1082
6cea494e 1083 get_byte(pb); /* version */
23f08617 1084 get_be24(pb); /* flags */
6cea494e
ZK
1085
1086 entries = get_be32(pb);
115329f1 1087
f8c18cd7
BC
1088 dprintf(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
1089
0d8f0abf
BC
1090 if(entries >= UINT_MAX / sizeof(*sc->stsc_data))
1091 return -1;
04e06cfa
BC
1092 sc->stsc_data = av_malloc(entries * sizeof(*sc->stsc_data));
1093 if (!sc->stsc_data)
0d8f0abf
BC
1094 return AVERROR(ENOMEM);
1095 sc->stsc_count = entries;
1096
6cea494e 1097 for(i=0; i<entries; i++) {
04e06cfa
BC
1098 sc->stsc_data[i].first = get_be32(pb);
1099 sc->stsc_data[i].count = get_be32(pb);
1100 sc->stsc_data[i].id = get_be32(pb);
6cea494e
ZK
1101 }
1102 return 0;
1103}
1104
c3e92a6c 1105static int mov_read_stss(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
247d56f5
BB
1106{
1107 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
e4141433 1108 MOVStreamContext *sc = st->priv_data;
568e18b1 1109 unsigned int i, entries;
247d56f5 1110
247d56f5 1111 get_byte(pb); /* version */
23f08617 1112 get_be24(pb); /* flags */
247d56f5
BB
1113
1114 entries = get_be32(pb);
115329f1 1115
0d8f0abf
BC
1116 dprintf(c->fc, "keyframe_count = %d\n", entries);
1117
1c02d96f 1118 if(entries >= UINT_MAX / sizeof(int))
568e18b1 1119 return -1;
1c02d96f 1120 sc->keyframes = av_malloc(entries * sizeof(int));
247d56f5 1121 if (!sc->keyframes)
0d8f0abf
BC
1122 return AVERROR(ENOMEM);
1123 sc->keyframe_count = entries;
1124
247d56f5
BB
1125 for(i=0; i<entries; i++) {
1126 sc->keyframes[i] = get_be32(pb);
f8c18cd7 1127 //dprintf(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
247d56f5
BB
1128 }
1129 return 0;
1130}
1131
c3e92a6c 1132static int mov_read_stsz(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
6cea494e 1133{
5ca1d879 1134 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
e4141433 1135 MOVStreamContext *sc = st->priv_data;
bd27eed6
AC
1136 unsigned int i, entries, sample_size, field_size, num_bytes;
1137 GetBitContext gb;
1138 unsigned char* buf;
b6a17df4 1139
6cea494e 1140 get_byte(pb); /* version */
23f08617 1141 get_be24(pb); /* flags */
5cd62665 1142
bd27eed6 1143 if (atom.type == MKTAG('s','t','s','z')) {
d0dab0ec
AC
1144 sample_size = get_be32(pb);
1145 if (!sc->sample_size) /* do not overwrite value computed in stsd */
1146 sc->sample_size = sample_size;
1147 field_size = 32;
bd27eed6
AC
1148 } else {
1149 sample_size = 0;
1150 get_be24(pb); /* reserved */
1151 field_size = get_byte(pb);
1152 }
6cea494e 1153 entries = get_be32(pb);
0d8f0abf
BC
1154
1155 dprintf(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, entries);
568e18b1 1156
6cea494e 1157 sc->sample_count = entries;
b72708f8
BC
1158 if (sample_size)
1159 return 0;
1160
bd27eed6
AC
1161 if (field_size != 4 && field_size != 8 && field_size != 16 && field_size != 32) {
1162 av_log(c->fc, AV_LOG_ERROR, "Invalid sample field size %d\n", field_size);
1163 return -1;
1164 }
1165
0d8f0abf
BC
1166 if(entries >= UINT_MAX / sizeof(int))
1167 return -1;
1c02d96f 1168 sc->sample_sizes = av_malloc(entries * sizeof(int));
b6a17df4 1169 if (!sc->sample_sizes)
0d8f0abf
BC
1170 return AVERROR(ENOMEM);
1171
bd27eed6
AC
1172 num_bytes = (entries*field_size+4)>>3;
1173
08a5b4e9 1174 buf = av_malloc(num_bytes+FF_INPUT_BUFFER_PADDING_SIZE);
bd27eed6
AC
1175 if (!buf) {
1176 av_freep(&sc->sample_sizes);
1177 return AVERROR(ENOMEM);
1178 }
1179
1180 if (get_buffer(pb, buf, num_bytes) < num_bytes) {
1181 av_freep(&sc->sample_sizes);
1182 av_free(buf);
1183 return -1;
1184 }
1185
1186 init_get_bits(&gb, buf, 8*num_bytes);
1187
eb61405a 1188 for(i=0; i<entries; i++)
bd27eed6
AC
1189 sc->sample_sizes[i] = get_bits_long(&gb, field_size);
1190
1191 av_free(buf);
6cea494e
ZK
1192 return 0;
1193}
1194
c3e92a6c 1195static int mov_read_stts(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
0147f198 1196{
5ca1d879 1197 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
e4141433 1198 MOVStreamContext *sc = st->priv_data;
568e18b1 1199 unsigned int i, entries;
d957696f
MN
1200 int64_t duration=0;
1201 int64_t total_sample_count=0;
b6a17df4 1202
0147f198 1203 get_byte(pb); /* version */
23f08617 1204 get_be24(pb); /* flags */
0147f198 1205 entries = get_be32(pb);
0d8f0abf
BC
1206
1207 dprintf(c->fc, "track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries);
1208
c3e92a6c 1209 if(entries >= UINT_MAX / sizeof(*sc->stts_data))
568e18b1 1210 return -1;
c3e92a6c 1211 sc->stts_data = av_malloc(entries * sizeof(*sc->stts_data));
c1da59fa 1212 if (!sc->stts_data)
0d8f0abf
BC
1213 return AVERROR(ENOMEM);
1214 sc->stts_count = entries;
cd7352d5 1215
0147f198 1216 for(i=0; i<entries; i++) {
cd461d48
MN
1217 int sample_duration;
1218 int sample_count;
0147f198 1219
891f64b3 1220 sample_count=get_be32(pb);
0147f198 1221 sample_duration = get_be32(pb);
cd7352d5
MN
1222 sc->stts_data[i].count= sample_count;
1223 sc->stts_data[i].duration= sample_duration;
1224
9ce6c138 1225 sc->time_rate= av_gcd(sc->time_rate, sample_duration);
961e0ccd 1226
318c5e05 1227 dprintf(c->fc, "sample_count=%d, sample_duration=%d\n",sample_count,sample_duration);
4e5ef14f 1228
7e815047 1229 duration+=(int64_t)sample_duration*sample_count;
891f64b3 1230 total_sample_count+=sample_count;
891f64b3 1231 }
1232
961e0ccd
MN
1233 st->nb_frames= total_sample_count;
1234 if(duration)
1235 st->duration= duration;
0147f198
FR
1236 return 0;
1237}
1238
4b29ed39
BC
1239static int mov_read_cslg(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
1240{
1241 AVStream *st;
1242 MOVStreamContext *sc;
1243
41e64999 1244 if (c->fc->nb_streams < 1)
4b29ed39
BC
1245 return 0;
1246 st = c->fc->streams[c->fc->nb_streams-1];
1247 sc = st->priv_data;
1248
1249 get_be32(pb); // version + flags
1250
1251 sc->dts_shift = get_be32(pb);
1252 dprintf(c->fc, "dts shift %d\n", sc->dts_shift);
1253
1254 sc->time_rate= av_gcd(sc->time_rate, FFABS(sc->dts_shift));
1255
1256 get_be32(pb); // least dts to pts delta
1257 get_be32(pb); // greatest dts to pts delta
1258 get_be32(pb); // pts start
1259 get_be32(pb); // pts end
1260
1261 return 0;
1262}
1263
c3e92a6c 1264static int mov_read_ctts(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
c4ac052b 1265{
70a61ed4 1266 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
e4141433 1267 MOVStreamContext *sc = st->priv_data;
c4ac052b
MN
1268 unsigned int i, entries;
1269
c4ac052b 1270 get_byte(pb); /* version */
23f08617 1271 get_be24(pb); /* flags */
c4ac052b 1272 entries = get_be32(pb);
0d8f0abf
BC
1273
1274 dprintf(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
1275
c3e92a6c 1276 if(entries >= UINT_MAX / sizeof(*sc->ctts_data))
c4ac052b 1277 return -1;
c3e92a6c 1278 sc->ctts_data = av_malloc(entries * sizeof(*sc->ctts_data));
c1da59fa 1279 if (!sc->ctts_data)
0d8f0abf
BC
1280 return AVERROR(ENOMEM);
1281 sc->ctts_count = entries;
4e5ef14f 1282
c4ac052b 1283 for(i=0; i<entries; i++) {
70a61ed4
MN
1284 int count =get_be32(pb);
1285 int duration =get_be32(pb);
1286
1287 sc->ctts_data[i].count = count;
1288 sc->ctts_data[i].duration= duration;
1289
9ce6c138 1290 sc->time_rate= av_gcd(sc->time_rate, FFABS(duration));
c4ac052b
MN
1291 }
1292 return 0;
1293}
1294
1e77810d
BC
1295static void mov_build_index(MOVContext *mov, AVStream *st)
1296{
1297 MOVStreamContext *sc = st->priv_data;
bc5c918e 1298 int64_t current_offset;
1e77810d
BC
1299 int64_t current_dts = 0;
1300 unsigned int stts_index = 0;
1301 unsigned int stsc_index = 0;
1302 unsigned int stss_index = 0;
1303 unsigned int i, j;
1304
baf2ffd3
BC
1305 /* adjust first dts according to edit list */
1306 if (sc->time_offset) {
2ac736a6 1307 int rescaled = sc->time_offset < 0 ? av_rescale(sc->time_offset, sc->time_scale, mov->time_scale) : sc->time_offset;
baf2ffd3 1308 assert(sc->time_offset % sc->time_rate == 0);
2ac736a6 1309 current_dts = - (rescaled / sc->time_rate);
f03a081d
BC
1310 if (sc->ctts_data && sc->ctts_data[0].duration / sc->stts_data[0].duration > 16) {
1311 /* more than 16 frames delay, dts are likely wrong
1312 this happens with files created by iMovie */
1313 sc->wrong_dts = 1;
1314 st->codec->has_b_frames = 1;
1315 }
baf2ffd3
BC
1316 }
1317
d3bc61ac
BC
1318 /* only use old uncompressed audio chunk demuxing when stts specifies it */
1319 if (!(st->codec->codec_type == CODEC_TYPE_AUDIO &&
1320 sc->stts_count == 1 && sc->stts_data[0].duration == 1)) {
1e77810d
BC
1321 unsigned int current_sample = 0;
1322 unsigned int stts_sample = 0;
1323 unsigned int keyframe, sample_size;
1324 unsigned int distance = 0;
1325 int key_off = sc->keyframes && sc->keyframes[0] == 1;
1326
4b29ed39
BC
1327 sc->dts_shift /= sc->time_rate;
1328 current_dts -= sc->dts_shift;
1329
1e77810d
BC
1330 st->nb_frames = sc->sample_count;
1331 for (i = 0; i < sc->chunk_count; i++) {
1332 current_offset = sc->chunk_offsets[i];
04e06cfa
BC
1333 if (stsc_index + 1 < sc->stsc_count &&
1334 i + 1 == sc->stsc_data[stsc_index + 1].first)
1e77810d 1335 stsc_index++;
04e06cfa 1336 for (j = 0; j < sc->stsc_data[stsc_index].count; j++) {
1e77810d
BC
1337 if (current_sample >= sc->sample_count) {
1338 av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
f0f2218d 1339 return;
1e77810d
BC
1340 }
1341 keyframe = !sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index];
1342 if (keyframe) {
1343 distance = 0;
1344 if (stss_index + 1 < sc->keyframe_count)
1345 stss_index++;
1346 }
1347 sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
978677a7 1348 if(sc->pseudo_stream_id == -1 ||
04e06cfa 1349 sc->stsc_data[stsc_index].id - 1 == sc->pseudo_stream_id) {
1e77810d
BC
1350 av_add_index_entry(st, current_offset, current_dts, sample_size, distance,
1351 keyframe ? AVINDEX_KEYFRAME : 0);
585dac65
BC
1352 dprintf(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
1353 "size %d, distance %d, keyframe %d\n", st->index, current_sample,
1354 current_offset, current_dts, sample_size, distance, keyframe);
1355 }
6c00a9de 1356
1e77810d
BC
1357 current_offset += sample_size;
1358 assert(sc->stts_data[stts_index].duration % sc->time_rate == 0);
1359 current_dts += sc->stts_data[stts_index].duration / sc->time_rate;
1360 distance++;
1361 stts_sample++;
1362 current_sample++;
1363 if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
1364 stts_sample = 0;
1365 stts_index++;
1366 }
1367 }
1368 }
1369 } else { /* read whole chunk */
1370 unsigned int chunk_samples, chunk_size, chunk_duration;
1371 unsigned int frames = 1;
1372 for (i = 0; i < sc->chunk_count; i++) {
1373 current_offset = sc->chunk_offsets[i];
04e06cfa
BC
1374 if (stsc_index + 1 < sc->stsc_count &&
1375 i + 1 == sc->stsc_data[stsc_index + 1].first)
1e77810d 1376 stsc_index++;
04e06cfa 1377 chunk_samples = sc->stsc_data[stsc_index].count;
1e77810d
BC
1378 /* get chunk size, beware of alaw/ulaw/mace */
1379 if (sc->samples_per_frame > 0 &&
1380 (chunk_samples * sc->bytes_per_frame % sc->samples_per_frame == 0)) {
3b8c000d 1381 if (sc->samples_per_frame < 160)
1e77810d
BC
1382 chunk_size = chunk_samples * sc->bytes_per_frame / sc->samples_per_frame;
1383 else {
1384 chunk_size = sc->bytes_per_frame;
1385 frames = chunk_samples / sc->samples_per_frame;
1386 chunk_samples = sc->samples_per_frame;
1387 }
48a55290 1388 } else
1e77810d 1389 chunk_size = chunk_samples * sc->sample_size;
1e77810d
BC
1390 for (j = 0; j < frames; j++) {
1391 av_add_index_entry(st, current_offset, current_dts, chunk_size, 0, AVINDEX_KEYFRAME);
1392 /* get chunk duration */
1393 chunk_duration = 0;
1394 while (chunk_samples > 0) {
1395 if (chunk_samples < sc->stts_data[stts_index].count) {
1396 chunk_duration += sc->stts_data[stts_index].duration * chunk_samples;
1397 sc->stts_data[stts_index].count -= chunk_samples;
1398 break;
1399 } else {
1400 chunk_duration += sc->stts_data[stts_index].duration * chunk_samples;
1401 chunk_samples -= sc->stts_data[stts_index].count;
1402 if (stts_index + 1 < sc->stts_count)
1403 stts_index++;
1404 }
1405 }
1406 current_offset += sc->bytes_per_frame;
117a9190
BC
1407 dprintf(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", "
1408 "size %d, duration %d\n", st->index, i, current_offset, current_dts,
1409 chunk_size, chunk_duration);
1e77810d
BC
1410 assert(chunk_duration % sc->time_rate == 0);
1411 current_dts += chunk_duration / sc->time_rate;
1412 }
1413 }
1414 }
1e77810d 1415}
bd991df2 1416
c3e92a6c 1417static int mov_read_trak(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
5ca1d879
ZK
1418{
1419 AVStream *st;
1420 MOVStreamContext *sc;
bd991df2 1421 int ret;
5ca1d879 1422
5ca1d879 1423 st = av_new_stream(c->fc, c->fc->nb_streams);
3efe8848 1424 if (!st) return AVERROR(ENOMEM);
9a630c25 1425 sc = av_mallocz(sizeof(MOVStreamContext));
2922cbdb 1426 if (!sc) return AVERROR(ENOMEM);
5ca1d879 1427
5ca1d879 1428 st->priv_data = sc;
05edc1a7 1429 st->codec->codec_type = CODEC_TYPE_DATA;
64d50fa5 1430 sc->ffindex = st->index;
5ca1d879 1431
bd991df2
BC
1432 if ((ret = mov_read_default(c, pb, atom)) < 0)
1433 return ret;
1434
1435 /* sanity checks */
6c00a9de
BC
1436 if (sc->chunk_count && (!sc->stts_count || !sc->stsc_count ||
1437 (!sc->sample_size && !sc->sample_count))) {
6282c5f4
BC
1438 av_log(c->fc, AV_LOG_ERROR, "stream %d, missing mandatory atoms, broken header\n",
1439 st->index);
bd991df2
BC
1440 return 0;
1441 }
6c00a9de
BC
1442
1443 if (!sc->time_rate)
1444 sc->time_rate = 1;
1445 if (!sc->time_scale)
1446 sc->time_scale = c->time_scale;
1447
bd991df2
BC
1448 av_set_pts_info(st, 64, sc->time_rate, sc->time_scale);
1449
3f78a3a9 1450 if (st->codec->codec_type == CODEC_TYPE_AUDIO &&
5b4f5e5d
BC
1451 !st->codec->frame_size && sc->stts_count == 1) {
1452 st->codec->frame_size = av_rescale(sc->stts_data[0].duration,
1453 st->codec->sample_rate, sc->time_scale);
1454 dprintf(c->fc, "frame size %d\n", st->codec->frame_size);
1455 }
bd991df2 1456
6c00a9de 1457 if (st->duration != AV_NOPTS_VALUE) {
bd991df2
BC
1458 assert(st->duration % sc->time_rate == 0);
1459 st->duration /= sc->time_rate;
1460 }
64d50fa5 1461
bd991df2
BC
1462 mov_build_index(c, st);
1463
1464 if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) {
1465 if (url_fopen(&sc->pb, sc->drefs[sc->dref_id-1].path, URL_RDONLY) < 0)
9e81a0ce
BC
1466 av_log(c->fc, AV_LOG_ERROR, "stream %d, error opening file %s: %s\n",
1467 st->index, sc->drefs[sc->dref_id-1].path, strerror(errno));
bd991df2
BC
1468 } else
1469 sc->pb = c->fc->pb;
1470
1471 switch (st->codec->codec_id) {
b250f9c6 1472#if CONFIG_H261_DECODER
bd991df2
BC
1473 case CODEC_ID_H261:
1474#endif
b250f9c6 1475#if CONFIG_H263_DECODER
bd991df2
BC
1476 case CODEC_ID_H263:
1477#endif
a0dd3c00
BC
1478#if CONFIG_H264_DECODER
1479 case CODEC_ID_H264:
1480#endif
b250f9c6 1481#if CONFIG_MPEG4_DECODER
bd991df2
BC
1482 case CODEC_ID_MPEG4:
1483#endif
6c00a9de 1484 st->codec->width = 0; /* let decoder init width/height */
bd991df2
BC
1485 st->codec->height= 0;
1486 break;
bd991df2 1487 }
f9900374
BC
1488
1489 /* Do not need those anymore. */
1490 av_freep(&sc->chunk_offsets);
04e06cfa 1491 av_freep(&sc->stsc_data);
f9900374
BC
1492 av_freep(&sc->sample_sizes);
1493 av_freep(&sc->keyframes);
1494 av_freep(&sc->stts_data);
1495
bd991df2 1496 return 0;
5ca1d879
ZK
1497}
1498
c3e92a6c 1499static int mov_read_ilst(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
51c15201
BC
1500{
1501 int ret;
1502 c->itunes_metadata = 1;
1503 ret = mov_read_default(c, pb, atom);
1504 c->itunes_metadata = 0;
1505 return ret;
1506}
1507
c3e92a6c 1508static int mov_read_meta(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
51c15201 1509{
df8843c6
BC
1510 while (atom.size > 8) {
1511 uint32_t tag = get_le32(pb);
1512 atom.size -= 4;
1513 if (tag == MKTAG('h','d','l','r')) {
1514 url_fseek(pb, -8, SEEK_CUR);
1515 atom.size += 8;
1516 return mov_read_default(c, pb, atom);
1517 }
1518 }
1519 return 0;
51c15201
BC
1520}
1521
c3e92a6c 1522static int mov_read_tkhd(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
5ca1d879 1523{
ec072669
JS
1524 int i;
1525 int width;
1526 int height;
1527 int64_t disp_transform[2];
1528 int display_matrix[3][2];
f444b977 1529 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
6cdbff63 1530 MOVStreamContext *sc = st->priv_data;
f444b977 1531 int version = get_byte(pb);
5ca1d879 1532
23f08617 1533 get_be24(pb); /* flags */
5ca1d879
ZK
1534 /*
1535 MOV_TRACK_ENABLED 0x0001
1536 MOV_TRACK_IN_MOVIE 0x0002
1537 MOV_TRACK_IN_PREVIEW 0x0004
1538 MOV_TRACK_IN_POSTER 0x0008
1539 */
1540
1175561e
BC
1541 if (version == 1) {
1542 get_be64(pb);
1543 get_be64(pb);
1544 } else {
1545 get_be32(pb); /* creation time */
1546 get_be32(pb); /* modification time */
1547 }
5ca1d879
ZK
1548 st->id = (int)get_be32(pb); /* track id (NOT 0 !)*/
1549 get_be32(pb); /* reserved */
fcdd622c 1550
117a9190
BC
1551 /* highlevel (considering edits) duration in movie timebase */
1552 (version == 1) ? get_be64(pb) : get_be32(pb);
5ca1d879
ZK
1553 get_be32(pb); /* reserved */
1554 get_be32(pb); /* reserved */
1555
1556 get_be16(pb); /* layer */
1557 get_be16(pb); /* alternate group */
1558 get_be16(pb); /* volume */
1559 get_be16(pb); /* reserved */
1560
ec072669
JS
1561 //read in the display matrix (outlined in ISO 14496-12, Section 6.2.2)
1562 // they're kept in fixed point format through all calculations
1563 // ignore u,v,z b/c we don't need the scale factor to calc aspect ratio
1564 for (i = 0; i < 3; i++) {
1565 display_matrix[i][0] = get_be32(pb); // 16.16 fixed point
1566 display_matrix[i][1] = get_be32(pb); // 16.16 fixed point
1567 get_be32(pb); // 2.30 fixed point (not used)
1568 }
5ca1d879 1569
ec072669
JS
1570 width = get_be32(pb); // 16.16 fixed point track width
1571 height = get_be32(pb); // 16.16 fixed point track height
6cdbff63
DC
1572 sc->width = width >> 16;
1573 sc->height = height >> 16;
ec072669
JS
1574
1575 //transform the display width/height according to the matrix
1576 // skip this if the display matrix is the default identity matrix
1577 // to keep the same scale, use [width height 1<<16]
1578 if (width && height &&
1579 (display_matrix[0][0] != 65536 || display_matrix[0][1] ||
1580 display_matrix[1][0] || display_matrix[1][1] != 65536 ||
1581 display_matrix[2][0] || display_matrix[2][1])) {
1582 for (i = 0; i < 2; i++)
1583 disp_transform[i] =
1584 (int64_t) width * display_matrix[0][i] +
1585 (int64_t) height * display_matrix[1][i] +
1586 ((int64_t) display_matrix[2][i] << 16);
1587
1588 //sample aspect ratio is new width/height divided by old width/height
59729451 1589 st->sample_aspect_ratio = av_d2q(
ec072669
JS
1590 ((double) disp_transform[0] * height) /
1591 ((double) disp_transform[1] * width), INT_MAX);
1592 }
5ca1d879
ZK
1593 return 0;
1594}
1595
c3e92a6c 1596static int mov_read_tfhd(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
61aedb0f
BC
1597{
1598 MOVFragment *frag = &c->fragment;
1599 MOVTrackExt *trex = NULL;
1600 int flags, track_id, i;
1601
1602 get_byte(pb); /* version */
1603 flags = get_be24(pb);
1604
1605 track_id = get_be32(pb);
63581eb1 1606 if (!track_id)
61aedb0f
BC
1607 return -1;
1608 frag->track_id = track_id;
1609 for (i = 0; i < c->trex_count; i++)
1610 if (c->trex_data[i].track_id == frag->track_id) {
1611 trex = &c->trex_data[i];
1612 break;
1613 }
1614 if (!trex) {
1615 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding trex\n");
1616 return -1;
1617 }
1618
1619 if (flags & 0x01) frag->base_data_offset = get_be64(pb);
1620 else frag->base_data_offset = frag->moof_offset;
1621 if (flags & 0x02) frag->stsd_id = get_be32(pb);
1622 else frag->stsd_id = trex->stsd_id;
1623
1624 frag->duration = flags & 0x08 ? get_be32(pb) : trex->duration;
1625 frag->size = flags & 0x10 ? get_be32(pb) : trex->size;
1626 frag->flags = flags & 0x20 ? get_be32(pb) : trex->flags;
1627 dprintf(c->fc, "frag flags 0x%x\n", frag->flags);
1628 return 0;
1629}
1630
c3e92a6c 1631static int mov_read_trex(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
61aedb0f
BC
1632{
1633 MOVTrackExt *trex;
1634
1635 if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data))
1636 return -1;
0d8f0abf
BC
1637 trex = av_realloc(c->trex_data, (c->trex_count+1)*sizeof(*c->trex_data));
1638 if (!trex)
61aedb0f 1639 return AVERROR(ENOMEM);
0d8f0abf 1640 c->trex_data = trex;
61aedb0f
BC
1641 trex = &c->trex_data[c->trex_count++];
1642 get_byte(pb); /* version */
1643 get_be24(pb); /* flags */
1644 trex->track_id = get_be32(pb);
1645 trex->stsd_id = get_be32(pb);
1646 trex->duration = get_be32(pb);
1647 trex->size = get_be32(pb);
1648 trex->flags = get_be32(pb);
1649 return 0;
1650}
1651
c3e92a6c 1652static int mov_read_trun(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
61aedb0f
BC
1653{
1654 MOVFragment *frag = &c->fragment;
63581eb1 1655 AVStream *st = NULL;
44e43aab 1656 MOVStreamContext *sc;
61aedb0f
BC
1657 uint64_t offset;
1658 int64_t dts;
1659 int data_offset = 0;
1660 unsigned entries, first_sample_flags = frag->flags;
1661 int flags, distance, i;
1662
63581eb1
AC
1663 for (i = 0; i < c->fc->nb_streams; i++) {
1664 if (c->fc->streams[i]->id == frag->track_id) {
1665 st = c->fc->streams[i];
1666 break;
1667 }
1668 }
1669 if (!st) {
1670 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id);
44e43aab 1671 return -1;
63581eb1 1672 }
44e43aab 1673 sc = st->priv_data;
61aedb0f
BC
1674 if (sc->pseudo_stream_id+1 != frag->stsd_id)
1675 return 0;
61aedb0f
BC
1676 get_byte(pb); /* version */
1677 flags = get_be24(pb);
1678 entries = get_be32(pb);
1679 dprintf(c->fc, "flags 0x%x entries %d\n", flags, entries);
1680 if (flags & 0x001) data_offset = get_be32(pb);
1681 if (flags & 0x004) first_sample_flags = get_be32(pb);
1682 if (flags & 0x800) {
0d8f0abf 1683 MOVStts *ctts_data;
61aedb0f
BC
1684 if ((uint64_t)entries+sc->ctts_count >= UINT_MAX/sizeof(*sc->ctts_data))
1685 return -1;
0d8f0abf
BC
1686 ctts_data = av_realloc(sc->ctts_data,
1687 (entries+sc->ctts_count)*sizeof(*sc->ctts_data));
1688 if (!ctts_data)
61aedb0f 1689 return AVERROR(ENOMEM);
0d8f0abf 1690 sc->ctts_data = ctts_data;
61aedb0f
BC
1691 }
1692 dts = st->duration;
1693 offset = frag->base_data_offset + data_offset;
1694 distance = 0;
1695 dprintf(c->fc, "first sample flags 0x%x\n", first_sample_flags);
1696 for (i = 0; i < entries; i++) {
1697 unsigned sample_size = frag->size;
1698 int sample_flags = i ? frag->flags : first_sample_flags;
1699 unsigned sample_duration = frag->duration;
1700 int keyframe;
1701
1702 if (flags & 0x100) sample_duration = get_be32(pb);
1703 if (flags & 0x200) sample_size = get_be32(pb);
1704 if (flags & 0x400) sample_flags = get_be32(pb);
1705 if (flags & 0x800) {
1706 sc->ctts_data[sc->ctts_count].count = 1;
1707 sc->ctts_data[sc->ctts_count].duration = get_be32(pb);
1708 sc->ctts_count++;
1709 }
1710 if ((keyframe = st->codec->codec_type == CODEC_TYPE_AUDIO ||
1711 (flags & 0x004 && !i && !sample_flags) || sample_flags & 0x2000000))
1712 distance = 0;
1713 av_add_index_entry(st, offset, dts, sample_size, distance,
1714 keyframe ? AVINDEX_KEYFRAME : 0);
1715 dprintf(c->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
1716 "size %d, distance %d, keyframe %d\n", st->index, sc->sample_count+i,
1717 offset, dts, sample_size, distance, keyframe);
1718 distance++;
1719 assert(sample_duration % sc->time_rate == 0);
1720 dts += sample_duration / sc->time_rate;
1721 offset += sample_size;
1722 }
1723 frag->moof_offset = offset;
61aedb0f
BC
1724 st->duration = dts;
1725 return 0;
1726}
1727
5ca1d879
ZK
1728/* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
1729/* like the files created with Adobe Premiere 5.0, for samples see */
1730/* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
c3e92a6c 1731static int mov_read_wide(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
5ca1d879
ZK
1732{
1733 int err;
5ca1d879 1734
5ca1d879
ZK
1735 if (atom.size < 8)
1736 return 0; /* continue */
1737 if (get_be32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
1738 url_fskip(pb, atom.size - 4);
1739 return 0;
1740 }
1741 atom.type = get_le32(pb);
1742 atom.offset += 8;
1743 atom.size -= 8;
1c126b4f 1744 if (atom.type != MKTAG('m','d','a','t')) {
5ca1d879
ZK
1745 url_fskip(pb, atom.size);
1746 return 0;
1747 }
1748 err = mov_read_mdat(c, pb, atom);
5ca1d879
ZK
1749 return err;
1750}
1751
c3e92a6c 1752static int mov_read_cmov(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
0147f198 1753{
b250f9c6 1754#if CONFIG_ZLIB
0147f198 1755 ByteIOContext ctx;
b6a17df4
ZK
1756 uint8_t *cmov_data;
1757 uint8_t *moov_data; /* uncompressed data */
0147f198 1758 long cmov_len, moov_len;
6f04eb1e 1759 int ret = -1;
b6a17df4 1760
0147f198 1761 get_be32(pb); /* dcom atom */
1c126b4f 1762 if (get_le32(pb) != MKTAG('d','c','o','m'))
0147f198 1763 return -1;
1c126b4f 1764 if (get_le32(pb) != MKTAG('z','l','i','b')) {
f3592353 1765 av_log(c->fc, AV_LOG_ERROR, "unknown compression for cmov atom !");
0147f198
FR
1766 return -1;
1767 }
1768 get_be32(pb); /* cmvd atom */
1c126b4f 1769 if (get_le32(pb) != MKTAG('c','m','v','d'))
0147f198
FR
1770 return -1;
1771 moov_len = get_be32(pb); /* uncompressed size */
5ca1d879 1772 cmov_len = atom.size - 6 * 4;
5cd62665 1773
9a630c25 1774 cmov_data = av_malloc(cmov_len);
0147f198 1775 if (!cmov_data)
0d8f0abf 1776 return AVERROR(ENOMEM);
9a630c25 1777 moov_data = av_malloc(moov_len);
0147f198
FR
1778 if (!moov_data) {
1779 av_free(cmov_data);
0d8f0abf 1780 return AVERROR(ENOMEM);
0147f198
FR
1781 }
1782 get_buffer(pb, cmov_data, cmov_len);
b6a17df4 1783 if(uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
6f04eb1e 1784 goto free_and_return;
942f3bb5 1785 if(init_put_byte(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
6f04eb1e 1786 goto free_and_return;
1c126b4f 1787 atom.type = MKTAG('m','o','o','v');
5ca1d879
ZK
1788 atom.offset = 0;
1789 atom.size = moov_len;
9ed83b0a 1790#ifdef DEBUG
dbb4f00a 1791// { int fd = open("/tmp/uncompheader.mov", O_WRONLY | O_CREAT); write(fd, moov_data, moov_len); close(fd); }
9ed83b0a 1792#endif
5ca1d879 1793 ret = mov_read_default(c, &ctx, atom);
6f04eb1e 1794free_and_return:
0147f198
FR
1795 av_free(moov_data);
1796 av_free(cmov_data);
1797 return ret;
d966b2f0
BC
1798#else
1799 av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
1800 return -1;
0147f198 1801#endif
d966b2f0 1802}
0147f198 1803
baf25c9d 1804/* edit list atom */
c3e92a6c 1805static int mov_read_elst(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
baf25c9d 1806{
7c622eed 1807 MOVStreamContext *sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
e0977c80
BC
1808 int i, edit_count;
1809
1810 get_byte(pb); /* version */
23f08617 1811 get_be24(pb); /* flags */
1975c52c 1812 edit_count = get_be32(pb); /* entries */
e0977c80
BC
1813
1814 for(i=0; i<edit_count; i++){
d435e520 1815 int time;
2ac736a6 1816 int duration = get_be32(pb); /* Track duration */
d435e520 1817 time = get_be32(pb); /* Media time */
e0977c80 1818 get_be32(pb); /* Media rate */
2ac736a6
RD
1819 if (i == 0 && time >= -1) {
1820 sc->time_offset = time != -1 ? time : -duration;
1821 sc->time_rate = av_gcd(sc->time_rate, FFABS(sc->time_offset));
a5929abe 1822 }
e0977c80 1823 }
baf2ffd3
BC
1824
1825 if(edit_count > 1)
1826 av_log(c->fc, AV_LOG_WARNING, "multiple edit list entries, "
1827 "a/v desync might occur, patch welcome\n");
1828
4c125b8f 1829 dprintf(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, edit_count);
e0977c80 1830 return 0;
baf25c9d
GC
1831}
1832
6cea494e 1833static const MOVParseTableEntry mov_default_parse_table[] = {
d4fdba0d 1834{ MKTAG('a','v','s','s'), mov_read_extradata },
1c126b4f 1835{ MKTAG('c','o','6','4'), mov_read_stco },
4b29ed39 1836{ MKTAG('c','s','l','g'), mov_read_cslg },
1c126b4f
BC
1837{ MKTAG('c','t','t','s'), mov_read_ctts }, /* composition time to sample */
1838{ MKTAG('d','i','n','f'), mov_read_default },
1839{ MKTAG('d','r','e','f'), mov_read_dref },
1840{ MKTAG('e','d','t','s'), mov_read_default },
1841{ MKTAG('e','l','s','t'), mov_read_elst },
1842{ MKTAG('e','n','d','a'), mov_read_enda },
1843{ MKTAG('f','i','e','l'), mov_read_extradata },
1844{ MKTAG('f','t','y','p'), mov_read_ftyp },
1845{ MKTAG('g','l','b','l'), mov_read_glbl },
1846{ MKTAG('h','d','l','r'), mov_read_hdlr },
51c15201 1847{ MKTAG('i','l','s','t'), mov_read_ilst },
1c126b4f
BC
1848{ MKTAG('j','p','2','h'), mov_read_extradata },
1849{ MKTAG('m','d','a','t'), mov_read_mdat },
1850{ MKTAG('m','d','h','d'), mov_read_mdhd },
1851{ MKTAG('m','d','i','a'), mov_read_default },
51c15201 1852{ MKTAG('m','e','t','a'), mov_read_meta },
1c126b4f
BC
1853{ MKTAG('m','i','n','f'), mov_read_default },
1854{ MKTAG('m','o','o','f'), mov_read_moof },
1855{ MKTAG('m','o','o','v'), mov_read_moov },
1856{ MKTAG('m','v','e','x'), mov_read_default },
1857{ MKTAG('m','v','h','d'), mov_read_mvhd },
1858{ MKTAG('S','M','I',' '), mov_read_smi }, /* Sorenson extension ??? */
1859{ MKTAG('a','l','a','c'), mov_read_extradata }, /* alac specific atom */
1860{ MKTAG('a','v','c','C'), mov_read_glbl },
6da54074 1861{ MKTAG('p','a','s','p'), mov_read_pasp },
1c126b4f
BC
1862{ MKTAG('s','t','b','l'), mov_read_default },
1863{ MKTAG('s','t','c','o'), mov_read_stco },
1864{ MKTAG('s','t','s','c'), mov_read_stsc },
1865{ MKTAG('s','t','s','d'), mov_read_stsd }, /* sample description */
1866{ MKTAG('s','t','s','s'), mov_read_stss }, /* sync sample */
1867{ MKTAG('s','t','s','z'), mov_read_stsz }, /* sample size */
1868{ MKTAG('s','t','t','s'), mov_read_stts },
bd27eed6 1869{ MKTAG('s','t','z','2'), mov_read_stsz }, /* compact sample size */
1c126b4f
BC
1870{ MKTAG('t','k','h','d'), mov_read_tkhd }, /* track header */
1871{ MKTAG('t','f','h','d'), mov_read_tfhd }, /* track fragment header */
1872{ MKTAG('t','r','a','k'), mov_read_trak },
1873{ MKTAG('t','r','a','f'), mov_read_default },
1874{ MKTAG('t','r','e','x'), mov_read_trex },
1875{ MKTAG('t','r','u','n'), mov_read_trun },
86b0affd 1876{ MKTAG('u','d','t','a'), mov_read_default },
1c126b4f
BC
1877{ MKTAG('w','a','v','e'), mov_read_wave },
1878{ MKTAG('e','s','d','s'), mov_read_esds },
1879{ MKTAG('w','i','d','e'), mov_read_wide }, /* place holder */
1880{ MKTAG('c','m','o','v'), mov_read_cmov },
bcfe2ba0 1881{ 0, NULL }
6cea494e
ZK
1882};
1883
c9a65ca8
FB
1884static int mov_probe(AVProbeData *p)
1885{
0e7eed09
FB
1886 unsigned int offset;
1887 uint32_t tag;
2497479f 1888 int score = 0;
3ffe3793 1889
c9a65ca8 1890 /* check file header */
0e7eed09
FB
1891 offset = 0;
1892 for(;;) {
1893 /* ignore invalid offset */
1894 if ((offset + 8) > (unsigned int)p->buf_size)
2497479f 1895 return score;
fead30d4 1896 tag = AV_RL32(p->buf + offset + 4);
0e7eed09 1897 switch(tag) {
2497479f 1898 /* check for obvious tags */
1c126b4f
BC
1899 case MKTAG('j','P',' ',' '): /* jpeg 2000 signature */
1900 case MKTAG('m','o','o','v'):
1901 case MKTAG('m','d','a','t'):
1902 case MKTAG('p','n','o','t'): /* detect movs with preview pics like ew.mov and april.mov */
1903 case MKTAG('u','d','t','a'): /* Packet Video PVAuthor adds this and a lot of more junk */
40e7aaa3 1904 case MKTAG('f','t','y','p'):
3ffe3793 1905 return AVPROBE_SCORE_MAX;
2497479f 1906 /* those are more common words, so rate then a bit less */
1c126b4f
BC
1907 case MKTAG('e','d','i','w'): /* xdcam files have reverted first tags */
1908 case MKTAG('w','i','d','e'):
1909 case MKTAG('f','r','e','e'):
1910 case MKTAG('j','u','n','k'):
1911 case MKTAG('p','i','c','t'):
2497479f 1912 return AVPROBE_SCORE_MAX - 5;
5469b788 1913 case MKTAG(0x82,0x82,0x7f,0x7d):
1c126b4f
BC
1914 case MKTAG('s','k','i','p'):
1915 case MKTAG('u','u','i','d'):
1916 case MKTAG('p','r','f','l'):
fead30d4 1917 offset = AV_RB32(p->buf+offset) + offset;
2497479f
FR
1918 /* if we only find those cause probedata is too small at least rate them */
1919 score = AVPROBE_SCORE_MAX - 50;
0e7eed09
FB
1920 break;
1921 default:
1922 /* unrecognized tag */
2497479f 1923 return score;
0e7eed09 1924 }
3ffe3793 1925 }
2497479f 1926 return score;
c9a65ca8
FB
1927}
1928
a266644f 1929static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
6cea494e 1930{
e4141433 1931 MOVContext *mov = s->priv_data;
899681cd 1932 ByteIOContext *pb = s->pb;
f9900374 1933 int err;
c3e92a6c 1934 MOVAtom atom = { 0, 0, 0 };
6cea494e 1935
6cea494e 1936 mov->fc = s;
117a9190
BC
1937 /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
1938 if(!url_is_streamed(pb))
bb270c08 1939 atom.size = url_fsize(pb);
6cea494e 1940 else
fa22ca22 1941 atom.size = INT64_MAX;
6cea494e 1942
6cea494e 1943 /* check MOV header */
612b5cbb
BC
1944 if ((err = mov_read_default(mov, pb, atom)) < 0) {
1945 av_log(s, AV_LOG_ERROR, "error reading header: %d\n", err);
1946 return err;
1947 }
1948 if (!mov->found_moov) {
1949 av_log(s, AV_LOG_ERROR, "moov atom not found\n");
bb270c08 1950 return -1;
6cea494e 1951 }
0265fe81 1952 dprintf(mov->fc, "on_parse_exit_offset=%lld\n", url_ftell(pb));
4e5ef14f 1953
6cea494e
ZK
1954 return 0;
1955}
1956
a266644f 1957static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
6cea494e 1958{
b72708f8
BC
1959 MOVContext *mov = s->priv_data;
1960 MOVStreamContext *sc = 0;
1961 AVIndexEntry *sample = 0;
86d8602f 1962 int64_t best_dts = INT64_MAX;
bc64cb96 1963 int i, ret;
433aeb62 1964 retry:
11f16b66 1965 for (i = 0; i < s->nb_streams; i++) {
7c622eed
BC
1966 AVStream *st = s->streams[i];
1967 MOVStreamContext *msc = st->priv_data;
f0f2218d 1968 if (st->discard != AVDISCARD_ALL && msc->pb && msc->current_sample < st->nb_index_entries) {
7c622eed 1969 AVIndexEntry *current_sample = &st->index_entries[msc->current_sample];
29c90869
BC
1970 int64_t dts = av_rescale(current_sample->timestamp * (int64_t)msc->time_rate,
1971 AV_TIME_BASE, msc->time_scale);
1c02d96f 1972 dprintf(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
687f35f3
BC
1973 if (!sample || (url_is_streamed(s->pb) && current_sample->pos < sample->pos) ||
1974 (!url_is_streamed(s->pb) &&
221e21b7 1975 ((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb &&
687f35f3 1976 ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
221e21b7 1977 (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) {
b72708f8
BC
1978 sample = current_sample;
1979 best_dts = dts;
1980 sc = msc;
86d8602f 1981 }
6cea494e 1982 }
6cea494e 1983 }
433aeb62
BC
1984 if (!sample) {
1985 mov->found_mdat = 0;
1986 if (!url_is_streamed(s->pb) ||
c3e92a6c 1987 mov_read_default(mov, s->pb, (MOVAtom){ 0, 0, INT64_MAX }) < 0 ||
433aeb62
BC
1988 url_feof(s->pb))
1989 return -1;
1990 dprintf(s, "read fragments, offset 0x%llx\n", url_ftell(s->pb));
1991 goto retry;
1992 }
b72708f8
BC
1993 /* must be done just before reading, to avoid infinite loop on sample */
1994 sc->current_sample++;
221e21b7 1995 if (url_fseek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
29c90869
BC
1996 av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
1997 sc->ffindex, sample->pos);
bb270c08 1998 return -1;
6cea494e 1999 }
bc64cb96
BC
2000 ret = av_get_packet(sc->pb, pkt, sample->size);
2001 if (ret < 0)
2002 return ret;
b250f9c6 2003#if CONFIG_DV_DEMUXER
56ea717b
BC
2004 if (mov->dv_demux && sc->dv_audio_container) {
2005 dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size);
2006 av_free(pkt->data);
300aa2b0
BC
2007 pkt->size = 0;
2008 if (dv_get_packet(mov->dv_demux, pkt) < 0)
2009 return -1;
56ea717b 2010 }
312954f0 2011#endif
b72708f8
BC
2012 pkt->stream_index = sc->ffindex;
2013 pkt->dts = sample->timestamp;
2014 if (sc->ctts_data) {
a234e38d 2015 assert(sc->ctts_data[sc->ctts_index].duration % sc->time_rate == 0);
4b29ed39 2016 pkt->pts = pkt->dts + sc->dts_shift + sc->ctts_data[sc->ctts_index].duration / sc->time_rate;
b72708f8 2017 /* update ctts context */
a234e38d
BC
2018 sc->ctts_sample++;
2019 if (sc->ctts_index < sc->ctts_count &&
2020 sc->ctts_data[sc->ctts_index].count == sc->ctts_sample) {
2021 sc->ctts_index++;
2022 sc->ctts_sample = 0;
b565ea09 2023 }
0c5f76f7
BC
2024 if (sc->wrong_dts)
2025 pkt->dts = AV_NOPTS_VALUE;
b72708f8 2026 } else {
e8430214 2027 AVStream *st = s->streams[sc->ffindex];
f0f2218d 2028 int64_t next_dts = (sc->current_sample < st->nb_index_entries) ?
e8430214
HG
2029 st->index_entries[sc->current_sample].timestamp : st->duration;
2030 pkt->duration = next_dts - pkt->dts;
b72708f8 2031 pkt->pts = pkt->dts;
b565ea09 2032 }
b72708f8
BC
2033 pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? PKT_FLAG_KEY : 0;
2034 pkt->pos = sample->pos;
29c90869
BC
2035 dprintf(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n",
2036 pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
b72708f8
BC
2037 return 0;
2038}
3ffe3793 2039
b72708f8
BC
2040static int mov_seek_stream(AVStream *st, int64_t timestamp, int flags)
2041{
2042 MOVStreamContext *sc = st->priv_data;
2043 int sample, time_sample;
2044 int i;
115329f1 2045
b72708f8 2046 sample = av_index_search_timestamp(st, timestamp, flags);
318c5e05 2047 dprintf(st->codec, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
b72708f8
BC
2048 if (sample < 0) /* not sure what to do */
2049 return -1;
2050 sc->current_sample = sample;
1c02d96f 2051 dprintf(st->codec, "stream %d, found sample %d\n", st->index, sc->current_sample);
b72708f8
BC
2052 /* adjust ctts index */
2053 if (sc->ctts_data) {
2054 time_sample = 0;
2055 for (i = 0; i < sc->ctts_count; i++) {
54a5c719
BC
2056 int next = time_sample + sc->ctts_data[i].count;
2057 if (next > sc->current_sample) {
a234e38d
BC
2058 sc->ctts_index = i;
2059 sc->ctts_sample = sc->current_sample - time_sample;
b72708f8 2060 break;
115329f1 2061 }
54a5c719 2062 time_sample = next;
247d56f5 2063 }
247d56f5 2064 }
b72708f8 2065 return sample;
6cea494e
ZK
2066}
2067
961e0ccd 2068static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
baf25c9d 2069{
b72708f8
BC
2070 AVStream *st;
2071 int64_t seek_timestamp, timestamp;
2072 int sample;
2073 int i;
baf25c9d 2074
b72708f8 2075 if (stream_index >= s->nb_streams)
baf25c9d 2076 return -1;
8dc81a45
BC
2077 if (sample_time < 0)
2078 sample_time = 0;
baf25c9d 2079
b72708f8
BC
2080 st = s->streams[stream_index];
2081 sample = mov_seek_stream(st, sample_time, flags);
2082 if (sample < 0)
baf25c9d 2083 return -1;
baf25c9d 2084
b72708f8
BC
2085 /* adjust seek timestamp to found sample timestamp */
2086 seek_timestamp = st->index_entries[sample].timestamp;
baf25c9d 2087
b72708f8
BC
2088 for (i = 0; i < s->nb_streams; i++) {
2089 st = s->streams[i];
2090 if (stream_index == i || st->discard == AVDISCARD_ALL)
2091 continue;
baf25c9d 2092
b72708f8
BC
2093 timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
2094 mov_seek_stream(st, timestamp, flags);
115329f1 2095 }
baf25c9d
GC
2096 return 0;
2097}
baf25c9d 2098
a266644f 2099static int mov_read_close(AVFormatContext *s)
6cea494e 2100{
e4141433 2101 MOVContext *mov = s->priv_data;
6c00a9de
BC
2102 int i, j;
2103
2104 for (i = 0; i < s->nb_streams; i++) {
e49da827
BC
2105 AVStream *st = s->streams[i];
2106 MOVStreamContext *sc = st->priv_data;
6c00a9de 2107
7c622eed 2108 av_freep(&sc->ctts_data);
6c00a9de 2109 for (j = 0; j < sc->drefs_count; j++)
221e21b7
BC
2110 av_freep(&sc->drefs[j].path);
2111 av_freep(&sc->drefs);
2112 if (sc->pb && sc->pb != s->pb)
2113 url_fclose(sc->pb);
e49da827
BC
2114
2115 av_freep(&st->codec->palctrl);
4440b118 2116 }
6c00a9de
BC
2117
2118 if (mov->dv_demux) {
2119 for(i = 0; i < mov->dv_fctx->nb_streams; i++) {
b60c0454
BC
2120 av_freep(&mov->dv_fctx->streams[i]->codec);
2121 av_freep(&mov->dv_fctx->streams[i]);
2122 }
2123 av_freep(&mov->dv_fctx);
2124 av_freep(&mov->dv_demux);
2125 }
6c00a9de 2126
61aedb0f 2127 av_freep(&mov->trex_data);
6c00a9de 2128
6cea494e
ZK
2129 return 0;
2130}
2131
ff70e601 2132AVInputFormat mov_demuxer = {
fc5188f3 2133 "mov,mp4,m4a,3gp,3g2,mj2",
bde15e74 2134 NULL_IF_CONFIG_SMALL("QuickTime/MPEG-4/Motion JPEG 2000 format"),
c9a65ca8
FB
2135 sizeof(MOVContext),
2136 mov_probe,
6cea494e
ZK
2137 mov_read_header,
2138 mov_read_packet,
2139 mov_read_close,
baf25c9d 2140 mov_read_seek,
6cea494e 2141};