Use enum typers instead of int.
[libav.git] / libavformat / mov.c
CommitLineData
6cea494e 1/*
7fbde343 2 * MOV demuxer
19720f15 3 * Copyright (c) 2001 Fabrice Bellard.
6cea494e 4 *
b78e7197
DB
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
19720f15
FB
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
b78e7197 10 * version 2.1 of the License, or (at your option) any later version.
6cea494e 11 *
b78e7197 12 * FFmpeg is distributed in the hope that it will be useful,
6cea494e 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19720f15
FB
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
6cea494e 16 *
19720f15 17 * You should have received a copy of the GNU Lesser General Public
b78e7197 18 * License along with FFmpeg; if not, write to the Free Software
5509bffa 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
6cea494e 20 */
d957696f
MN
21
22#include <limits.h>
115329f1 23
bfc2a19d 24//#define DEBUG
4e5ef14f 25
6cea494e 26#include "avformat.h"
9d9f4119 27#include "riff.h"
e40ee6a2 28#include "isom.h"
b60c0454 29#include "dv.h"
245976da
DB
30#include "libavcodec/mpeg4audio.h"
31#include "libavcodec/mpegaudiodata.h"
6cea494e 32
0147f198
FR
33#ifdef CONFIG_ZLIB
34#include <zlib.h>
35#endif
36
6cea494e
ZK
37/*
38 * First version by Francois Revol revol@free.fr
115329f1 39 * Seek function by Gael Chardon gael.dev@4now.net
5ca1d879 40 *
6cea494e 41 * Features and limitations:
5ca1d879 42 * - reads most of the QT files I have (at least the structure),
6cea494e 43 * Sample QuickTime files with mp3 audio can be found at: http://www.3ivx.com/showcase.html
6cea494e 44 * - the code is quite ugly... maybe I won't do it recursive next time :-)
5ca1d879 45 *
6cea494e
ZK
46 * Funny I didn't know about http://sourceforge.net/projects/qt-ffmpeg/
47 * when coding this :) (it's a writer anyway)
5ca1d879 48 *
6cea494e
ZK
49 * Reference documents:
50 * http://www.geocities.com/xhelmboyx/quicktime/formats/qtm-layout.txt
51 * Apple:
baf25c9d 52 * http://developer.apple.com/documentation/QuickTime/QTFF/
15c8dbe7 53 * http://developer.apple.com/documentation/QuickTime/QTFF/qtff.pdf
6cea494e
ZK
54 * QuickTime is a trademark of Apple (AFAIK :))
55 */
56
b595afaa
MM
57#include "qtpalette.h"
58
baf25c9d 59
cd7352d5
MN
60#undef NDEBUG
61#include <assert.h>
62
6cea494e
ZK
63/* the QuickTime file format is quite convoluted...
64 * it has lots of index tables, each indexing something in another one...
65 * Here we just use what is needed to read the chunks
66 */
67
e23848a4 68typedef struct {
1c02d96f
BC
69 int first;
70 int count;
71 int id;
e23848a4 72} MOV_stsc_t;
6cea494e 73
5cd62665 74typedef struct {
5ca1d879 75 uint32_t type;
221e21b7
BC
76 char *path;
77} MOV_dref_t;
78
79typedef struct {
80 uint32_t type;
5ca1d879
ZK
81 int64_t offset;
82 int64_t size; /* total size (excluding the size and type fields) */
83} MOV_atom_t;
84
b6a17df4
ZK
85struct MOVParseTableEntry;
86
61aedb0f
BC
87typedef struct {
88 unsigned track_id;
89 uint64_t base_data_offset;
90 uint64_t moof_offset;
91 unsigned stsd_id;
92 unsigned duration;
93 unsigned size;
94 unsigned flags;
95} MOVFragment;
96
97typedef struct {
98 unsigned track_id;
99 unsigned stsd_id;
100 unsigned duration;
101 unsigned size;
102 unsigned flags;
103} MOVTrackExt;
104
6cea494e 105typedef struct MOVStreamContext {
221e21b7 106 ByteIOContext *pb;
6cea494e 107 int ffindex; /* the ffmpeg stream id */
1c02d96f 108 int next_chunk;
44d3fea5 109 unsigned int chunk_count;
0c1a9eda 110 int64_t *chunk_offsets;
44d3fea5 111 unsigned int stts_count;
e23848a4 112 MOV_stts_t *stts_data;
44d3fea5 113 unsigned int ctts_count;
e23848a4 114 MOV_stts_t *ctts_data;
44d3fea5
BC
115 unsigned int edit_count; /* number of 'edit' (elst atom) */
116 unsigned int sample_to_chunk_sz;
e23848a4 117 MOV_stsc_t *sample_to_chunk;
c4ac052b
MN
118 int sample_to_ctime_index;
119 int sample_to_ctime_sample;
44d3fea5
BC
120 unsigned int sample_size;
121 unsigned int sample_count;
1c02d96f 122 int *sample_sizes;
44d3fea5 123 unsigned int keyframe_count;
1c02d96f 124 int *keyframes;
5cd62665 125 int time_scale;
cd7352d5 126 int time_rate;
1c02d96f 127 int current_sample;
e14f79ed
BC
128 unsigned int bytes_per_frame;
129 unsigned int samples_per_frame;
b60c0454 130 int dv_audio_container;
978677a7 131 int pseudo_stream_id; ///< -1 means demux all ids
77c75437 132 int16_t audio_cid; ///< stsd audio compression id
221e21b7
BC
133 unsigned drefs_count;
134 MOV_dref_t *drefs;
135 int dref_id;
0c5f76f7 136 int wrong_dts; ///< dts are wrong due to negative ctts
6cea494e
ZK
137} MOVStreamContext;
138
139typedef struct MOVContext {
6cea494e 140 AVFormatContext *fc;
5cd62665 141 int time_scale;
7e815047 142 int64_t duration; /* duration of the longest track */
6cea494e
ZK
143 int found_moov; /* when both 'moov' and 'mdat' sections has been found */
144 int found_mdat; /* we suppose we have enough data to read the file */
b595afaa 145 AVPaletteControl palette_control;
b60c0454
BC
146 DVDemuxContext *dv_demux;
147 AVFormatContext *dv_fctx;
152e9a43 148 int isom; /* 1 if file is ISO Media (mp4/3gp) */
61aedb0f
BC
149 MOVFragment fragment; ///< current fragment in moof atom
150 MOVTrackExt *trex_data;
151 unsigned trex_count;
6cea494e
ZK
152} MOVContext;
153
154
6cea494e
ZK
155/* XXX: it's the first time I make a recursive parser I think... sorry if it's ugly :P */
156
157/* those functions parse an atom */
158/* return code:
e3c4740f 159 0: continue to parse next atom
d9526386 160 <0: error occurred, exit
e3c4740f 161*/
6cea494e
ZK
162/* links atom IDs to parse functions */
163typedef struct MOVParseTableEntry {
0c1a9eda 164 uint32_t type;
03dc32f6 165 int (*parse)(MOVContext *ctx, ByteIOContext *pb, MOV_atom_t atom);
6cea494e
ZK
166} MOVParseTableEntry;
167
73d07c27
BC
168static const MOVParseTableEntry mov_default_parse_table[];
169
5ca1d879 170static int mov_read_default(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
6cea494e 171{
b6a17df4 172 int64_t total_size = 0;
5ca1d879 173 MOV_atom_t a;
6cea494e
ZK
174 int i;
175 int err = 0;
5ca1d879 176
5ca1d879 177 a.offset = atom.offset;
6cea494e 178
9ed83b0a 179 if (atom.size < 0)
fa22ca22 180 atom.size = INT64_MAX;
5ca1d879 181 while(((total_size + 8) < atom.size) && !url_feof(pb) && !err) {
bb270c08 182 a.size = atom.size;
bcfe2ba0 183 a.type=0;
5ca1d879 184 if(atom.size >= 8) {
bb270c08 185 a.size = get_be32(pb);
5ca1d879 186 a.type = get_le32(pb);
6cea494e 187 }
bb270c08 188 total_size += 8;
5ca1d879 189 a.offset += 8;
29c90869
BC
190 dprintf(c->fc, "type: %08x %.4s sz: %"PRIx64" %"PRIx64" %"PRIx64"\n",
191 a.type, (char*)&a.type, a.size, atom.size, total_size);
5ca1d879 192 if (a.size == 1) { /* 64 bit extended size */
bb270c08 193 a.size = get_be64(pb) - 8;
5ca1d879
ZK
194 a.offset += 8;
195 total_size += 8;
6cea494e 196 }
bb270c08
DB
197 if (a.size == 0) {
198 a.size = atom.size - total_size;
199 if (a.size <= 8)
5cd62665 200 break;
bb270c08 201 }
bb270c08 202 a.size -= 8;
8622613d 203 if(a.size < 0)
568e18b1 204 break;
3d2308b0 205 a.size = FFMIN(a.size, atom.size - total_size);
115329f1 206
bcfe2ba0 207 for (i = 0; mov_default_parse_table[i].type != 0
73d07c27 208 && mov_default_parse_table[i].type != a.type; i++)
11979c46
BC
209 /* empty */;
210
73d07c27 211 if (mov_default_parse_table[i].type == 0) { /* skip leaf atoms data */
5ca1d879 212 url_fskip(pb, a.size);
bb270c08 213 } else {
5c72cad8
BC
214 offset_t start_pos = url_ftell(pb);
215 int64_t left;
03dc32f6 216 err = mov_default_parse_table[i].parse(c, pb, a);
db3ee6cc 217 if (url_is_streamed(pb) && c->found_moov && c->found_mdat)
687f35f3 218 break;
5c72cad8
BC
219 left = a.size - url_ftell(pb) + start_pos;
220 if (left > 0) /* skip garbage at atom end */
221 url_fskip(pb, left);
bb270c08 222 }
6cea494e 223
bb270c08 224 a.offset += a.size;
5ca1d879 225 total_size += a.size;
6cea494e
ZK
226 }
227
9ce84dd8 228 if (!err && total_size < atom.size && atom.size < 0x7ffff)
5ca1d879 229 url_fskip(pb, atom.size - total_size);
5cd62665 230
6cea494e
ZK
231 return err;
232}
233
221e21b7
BC
234static int mov_read_dref(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
235{
236 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
237 MOVStreamContext *sc = st->priv_data;
238 int entries, i, j;
239
240 get_be32(pb); // version + flags
241 entries = get_be32(pb);
242 if (entries >= UINT_MAX / sizeof(*sc->drefs))
243 return -1;
244 sc->drefs_count = entries;
245 sc->drefs = av_mallocz(entries * sizeof(*sc->drefs));
246
247 for (i = 0; i < sc->drefs_count; i++) {
248 MOV_dref_t *dref = &sc->drefs[i];
249 uint32_t size = get_be32(pb);
250 offset_t next = url_ftell(pb) + size - 4;
251
252 dref->type = get_le32(pb);
253 get_be32(pb); // version + flags
254 dprintf(c->fc, "type %.4s size %d\n", (char*)&dref->type, size);
255
256 if (dref->type == MKTAG('a','l','i','s') && size > 150) {
257 /* macintosh alias record */
258 uint16_t volume_len, len;
259 char volume[28];
260 int16_t type;
261
262 url_fskip(pb, 10);
263
264 volume_len = get_byte(pb);
265 volume_len = FFMIN(volume_len, 27);
266 get_buffer(pb, volume, 27);
267 volume[volume_len] = 0;
268 av_log(c->fc, AV_LOG_DEBUG, "volume %s, len %d\n", volume, volume_len);
269
270 url_fskip(pb, 112);
271
272 for (type = 0; type != -1 && url_ftell(pb) < next; ) {
273 type = get_be16(pb);
274 len = get_be16(pb);
275 av_log(c->fc, AV_LOG_DEBUG, "type %d, len %d\n", type, len);
276 if (len&1)
277 len += 1;
278 if (type == 2) { // absolute path
dbb37657 279 av_free(dref->path);
221e21b7 280 dref->path = av_mallocz(len+1);
2f4568e5
BC
281 if (!dref->path)
282 return AVERROR(ENOMEM);
221e21b7 283 get_buffer(pb, dref->path, len);
dbb7cbf2 284 if (len > volume_len && !strncmp(dref->path, volume, volume_len)) {
221e21b7
BC
285 len -= volume_len;
286 memmove(dref->path, dref->path+volume_len, len);
287 dref->path[len] = 0;
288 }
289 for (j = 0; j < len; j++)
290 if (dref->path[j] == ':')
291 dref->path[j] = '/';
292 av_log(c->fc, AV_LOG_DEBUG, "path %s\n", dref->path);
293 } else
294 url_fskip(pb, len);
295 }
296 }
297 url_fseek(pb, next, SEEK_SET);
298 }
299 return 0;
300}
301
5ca1d879 302static int mov_read_hdlr(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
6cea494e 303{
5ca1d879 304 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
0c1a9eda 305 uint32_t type;
0c1a9eda 306 uint32_t ctype;
b6a17df4 307
6cea494e 308 get_byte(pb); /* version */
23f08617 309 get_be24(pb); /* flags */
6cea494e
ZK
310
311 /* component type */
312 ctype = get_le32(pb);
313 type = get_le32(pb); /* component subtype */
314
29c90869
BC
315 dprintf(c->fc, "ctype= %c%c%c%c (0x%08x)\n", *((char *)&ctype), ((char *)&ctype)[1],
316 ((char *)&ctype)[2], ((char *)&ctype)[3], (int) ctype);
317 dprintf(c->fc, "stype= %c%c%c%c\n",
318 *((char *)&type), ((char *)&type)[1], ((char *)&type)[2], ((char *)&type)[3]);
152e9a43
BC
319 if(!ctype)
320 c->isom = 1;
37ffe34b 321 if (type == MKTAG('v','i','d','e'))
73920f07 322 st->codec->codec_type = CODEC_TYPE_VIDEO;
1c126b4f 323 else if(type == MKTAG('s','o','u','n'))
73920f07 324 st->codec->codec_type = CODEC_TYPE_AUDIO;
1c126b4f 325 else if(type == MKTAG('m','1','a',' '))
95a07973 326 st->codec->codec_id = CODEC_ID_MP2;
1c126b4f 327 else if(type == MKTAG('s','u','b','p')) {
8cb97693 328 st->codec->codec_type = CODEC_TYPE_SUBTITLE;
8cb97693 329 }
6cea494e
ZK
330 get_be32(pb); /* component manufacture */
331 get_be32(pb); /* component flags */
332 get_be32(pb); /* component flags mask */
333
5ca1d879 334 if(atom.size <= 24)
6cea494e 335 return 0; /* nothing left to read */
5cd62665 336
3c13647a 337 url_fskip(pb, atom.size - (url_ftell(pb) - atom.offset));
6cea494e
ZK
338 return 0;
339}
340
9e40addd 341static int mp4_read_descr_len(ByteIOContext *pb)
0e7eed09 342{
5cd62665 343 int len = 0;
5ca1d879
ZK
344 int count = 4;
345 while (count--) {
5cd62665 346 int c = get_byte(pb);
bb270c08
DB
347 len = (len << 7) | (c & 0x7f);
348 if (!(c & 0x80))
349 break;
0e7eed09
FB
350 }
351 return len;
352}
353
9e40addd 354static int mp4_read_descr(MOVContext *c, ByteIOContext *pb, int *tag)
0e7eed09
FB
355{
356 int len;
357 *tag = get_byte(pb);
9e40addd 358 len = mp4_read_descr_len(pb);
318c5e05 359 dprintf(c->fc, "MPEG4 description: tag=0x%02x len=%d\n", *tag, len);
0e7eed09
FB
360 return len;
361}
362
0b07ac42
BC
363#define MP4ESDescrTag 0x03
364#define MP4DecConfigDescrTag 0x04
365#define MP4DecSpecificDescrTag 0x05
366
1dec3994
BC
367static const AVCodecTag mp4_audio_types[] = {
368 { CODEC_ID_MP3ON4, 29 }, /* old mp3on4 draft */
369 { CODEC_ID_MP3ON4, 32 }, /* layer 1 */
370 { CODEC_ID_MP3ON4, 33 }, /* layer 2 */
371 { CODEC_ID_MP3ON4, 34 }, /* layer 3 */
372 { CODEC_ID_NONE, 0 },
373};
374
5ca1d879 375static int mov_read_esds(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
5cd62665 376{
5cd62665 377 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
5cd62665 378 int tag, len;
b6a17df4 379
5cd62665 380 get_be32(pb); /* version + flags */
9e40addd 381 len = mp4_read_descr(c, pb, &tag);
5cd62665 382 if (tag == MP4ESDescrTag) {
bb270c08
DB
383 get_be16(pb); /* ID */
384 get_byte(pb); /* priority */
5cd62665 385 } else
bb270c08 386 get_be16(pb); /* ID */
5cd62665 387
9e40addd 388 len = mp4_read_descr(c, pb, &tag);
5cd62665 389 if (tag == MP4DecConfigDescrTag) {
0b07ac42
BC
390 int object_type_id = get_byte(pb);
391 get_byte(pb); /* stream type */
392 get_be24(pb); /* buffer size db */
393 get_be32(pb); /* max bitrate */
394 get_be32(pb); /* avg bitrate */
395
396 st->codec->codec_id= codec_get_id(ff_mp4_obj_type, object_type_id);
397 dprintf(c->fc, "esds object type id %d\n", object_type_id);
9e40addd 398 len = mp4_read_descr(c, pb, &tag);
bb270c08 399 if (tag == MP4DecSpecificDescrTag) {
318c5e05 400 dprintf(c->fc, "Specific MPEG4 header len=%d\n", len);
852859ff
BC
401 if((uint64_t)len > (1<<30))
402 return -1;
9a630c25 403 st->codec->extradata = av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
b014dd76
BC
404 if (!st->codec->extradata)
405 return AVERROR(ENOMEM);
17871a02
BC
406 get_buffer(pb, st->codec->extradata, len);
407 st->codec->extradata_size = len;
1dec3994
BC
408 if (st->codec->codec_id == CODEC_ID_AAC) {
409 MPEG4AudioConfig cfg;
410 ff_mpeg4audio_get_config(&cfg, st->codec->extradata,
411 st->codec->extradata_size);
391872e4 412 if (cfg.chan_config > 7)
45a97d30
BC
413 return -1;
414 st->codec->channels = ff_mpeg4audio_channels[cfg.chan_config];
415 if (cfg.object_type == 29 && cfg.sampling_index < 3) // old mp3on4
416 st->codec->sample_rate = ff_mpa_freq_tab[cfg.sampling_index];
417 else
418 st->codec->sample_rate = cfg.sample_rate; // ext sample rate ?
419 dprintf(c->fc, "mp4a config channels %d obj %d ext obj %d "
420 "sample rate %d ext sample rate %d\n", st->codec->channels,
421 cfg.object_type, cfg.ext_object_type,
422 cfg.sample_rate, cfg.ext_sample_rate);
1dec3994
BC
423 if (!(st->codec->codec_id = codec_get_id(mp4_audio_types,
424 cfg.object_type)))
425 st->codec->codec_id = CODEC_ID_AAC;
17871a02 426 }
bb270c08 427 }
5cd62665 428 }
5cd62665
ZK
429 return 0;
430}
431
5ca1d879
ZK
432/* this atom contains actual media data */
433static int mov_read_mdat(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
6cea494e 434{
5ca1d879
ZK
435 if(atom.size == 0) /* wrong one (MP4) */
436 return 0;
437 c->found_mdat=1;
5ca1d879
ZK
438 return 0; /* now go for moov */
439}
440
4ea28253
BC
441static int mov_read_ftyp(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
442{
443 uint32_t type = get_le32(pb);
444
152e9a43
BC
445 if (type != MKTAG('q','t',' ',' '))
446 c->isom = 1;
a512446e 447 av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
4ea28253
BC
448 get_be32(pb); /* minor version */
449 url_fskip(pb, atom.size - 8);
450 return 0;
451}
452
5ca1d879
ZK
453/* this atom should contain all header atoms */
454static int mov_read_moov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
455{
9cf0419b
PI
456 if (mov_read_default(c, pb, atom) < 0)
457 return -1;
5ca1d879
ZK
458 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
459 /* so we don't parse the whole file if over a network */
460 c->found_moov=1;
5ca1d879
ZK
461 return 0; /* now go for mdat */
462}
463
61aedb0f
BC
464static int mov_read_moof(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
465{
466 c->fragment.moof_offset = url_ftell(pb) - 8;
467 dprintf(c->fc, "moof offset %llx\n", c->fragment.moof_offset);
468 return mov_read_default(c, pb, atom);
469}
5ca1d879
ZK
470
471static int mov_read_mdhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
472{
f444b977 473 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
e4141433 474 MOVStreamContext *sc = st->priv_data;
f444b977 475 int version = get_byte(pb);
b9a87c4d 476 int lang;
5ca1d879 477
b9a87c4d 478 if (version > 1)
7e627332 479 return -1; /* unsupported */
5ca1d879 480
23f08617 481 get_be24(pb); /* flags */
f444b977
BC
482 if (version == 1) {
483 get_be64(pb);
484 get_be64(pb);
485 } else {
486 get_be32(pb); /* creation time */
487 get_be32(pb); /* modification time */
488 }
5ca1d879 489
f444b977
BC
490 sc->time_scale = get_be32(pb);
491 st->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
5ca1d879 492
b9a87c4d 493 lang = get_be16(pb); /* language */
f444b977 494 ff_mov_lang_to_iso639(lang, st->language);
5ca1d879
ZK
495 get_be16(pb); /* quality */
496
497 return 0;
498}
499
500static int mov_read_mvhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
501{
1175561e 502 int version = get_byte(pb); /* version */
23f08617 503 get_be24(pb); /* flags */
5ca1d879 504
1175561e
BC
505 if (version == 1) {
506 get_be64(pb);
507 get_be64(pb);
508 } else {
509 get_be32(pb); /* creation time */
510 get_be32(pb); /* modification time */
511 }
5ca1d879 512 c->time_scale = get_be32(pb); /* time scale */
f8c18cd7
BC
513
514 dprintf(c->fc, "time scale = %i\n", c->time_scale);
515
1175561e 516 c->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
5ca1d879
ZK
517 get_be32(pb); /* preferred scale */
518
519 get_be16(pb); /* preferred volume */
520
521 url_fskip(pb, 10); /* reserved */
522
523 url_fskip(pb, 36); /* display matrix */
524
525 get_be32(pb); /* preview time */
526 get_be32(pb); /* preview duration */
527 get_be32(pb); /* poster time */
528 get_be32(pb); /* selection time */
529 get_be32(pb); /* selection duration */
530 get_be32(pb); /* current time */
531 get_be32(pb); /* next track ID */
532
533 return 0;
534}
535
9ed83b0a
ZK
536static int mov_read_smi(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
537{
538 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
539
568e18b1
MN
540 if((uint64_t)atom.size > (1<<30))
541 return -1;
115329f1 542
9ed83b0a
ZK
543 // currently SVQ3 decoder expect full STSD header - so let's fake it
544 // this should be fixed and just SMI header should be passed
01f4895c 545 av_free(st->codec->extradata);
b014dd76
BC
546 st->codec->extradata = av_mallocz(atom.size + 0x5a + FF_INPUT_BUFFER_PADDING_SIZE);
547 if (!st->codec->extradata)
548 return AVERROR(ENOMEM);
17871a02
BC
549 st->codec->extradata_size = 0x5a + atom.size;
550 memcpy(st->codec->extradata, "SVQ3", 4); // fake
551 get_buffer(pb, st->codec->extradata + 0x5a, atom.size);
552 dprintf(c->fc, "Reading SMI %"PRId64" %s\n", atom.size, st->codec->extradata + 0x5a);
9ed83b0a
ZK
553 return 0;
554}
5ca1d879 555
de23f234
BC
556static int mov_read_enda(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
557{
558 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
559 int little_endian = get_be16(pb);
560
561 if (little_endian) {
562 switch (st->codec->codec_id) {
563 case CODEC_ID_PCM_S24BE:
564 st->codec->codec_id = CODEC_ID_PCM_S24LE;
565 break;
566 case CODEC_ID_PCM_S32BE:
567 st->codec->codec_id = CODEC_ID_PCM_S32LE;
568 break;
a1ef2c4b
PR
569 case CODEC_ID_PCM_F32BE:
570 st->codec->codec_id = CODEC_ID_PCM_F32LE;
571 break;
572 case CODEC_ID_PCM_F64BE:
573 st->codec->codec_id = CODEC_ID_PCM_F64LE;
574 break;
de23f234
BC
575 default:
576 break;
577 }
578 }
579 return 0;
580}
581
014a5102
BC
582/* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
583static int mov_read_extradata(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
de23f234
BC
584{
585 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
68bc33fa
BC
586 uint64_t size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
587 uint8_t *buf;
588 if(size > INT_MAX || (uint64_t)atom.size > INT_MAX)
014a5102 589 return -1;
68bc33fa
BC
590 buf= av_realloc(st->codec->extradata, size);
591 if(!buf)
592 return -1;
593 st->codec->extradata= buf;
594 buf+= st->codec->extradata_size;
595 st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE;
596 AV_WB32( buf , atom.size + 8);
597 AV_WL32( buf + 4, atom.type);
598 get_buffer(pb, buf + 8, atom.size);
de23f234
BC
599 return 0;
600}
601
d9b1c197
RT
602static int mov_read_wave(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
603{
604 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
605
606 if((uint64_t)atom.size > (1<<30))
607 return -1;
115329f1 608
3840147e
MN
609 if (st->codec->codec_id == CODEC_ID_QDM2) {
610 // pass all frma atom to codec, needed at least for QDM2
611 av_free(st->codec->extradata);
b014dd76
BC
612 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
613 if (!st->codec->extradata)
614 return AVERROR(ENOMEM);
3840147e 615 st->codec->extradata_size = atom.size;
b014dd76 616 get_buffer(pb, st->codec->extradata, atom.size);
3840147e 617 } else if (atom.size > 8) { /* to read frma, esds atoms */
9cf0419b
PI
618 if (mov_read_default(c, pb, atom) < 0)
619 return -1;
5c72cad8 620 } else
bb270c08 621 url_fskip(pb, atom.size);
d9b1c197
RT
622 return 0;
623}
624
bde24601
BC
625/**
626 * This function reads atom content and puts data in extradata without tag
627 * nor size unlike mov_read_extradata.
628 */
629static int mov_read_glbl(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
169eb021
MM
630{
631 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
632
568e18b1
MN
633 if((uint64_t)atom.size > (1<<30))
634 return -1;
635
01f4895c 636 av_free(st->codec->extradata);
b014dd76
BC
637 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
638 if (!st->codec->extradata)
639 return AVERROR(ENOMEM);
01f4895c 640 st->codec->extradata_size = atom.size;
b014dd76 641 get_buffer(pb, st->codec->extradata, atom.size);
169eb021
MM
642 return 0;
643}
644
5ca1d879
ZK
645static int mov_read_stco(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
646{
647 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
e4141433 648 MOVStreamContext *sc = st->priv_data;
568e18b1 649 unsigned int i, entries;
5ca1d879 650
5ca1d879 651 get_byte(pb); /* version */
23f08617 652 get_be24(pb); /* flags */
5ca1d879
ZK
653
654 entries = get_be32(pb);
115329f1 655
568e18b1
MN
656 if(entries >= UINT_MAX/sizeof(int64_t))
657 return -1;
115329f1 658
5ca1d879 659 sc->chunk_count = entries;
9a630c25 660 sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
5ca1d879
ZK
661 if (!sc->chunk_offsets)
662 return -1;
37ffe34b
BC
663 if (atom.type == MKTAG('s','t','c','o'))
664 for(i=0; i<entries; i++)
5ca1d879 665 sc->chunk_offsets[i] = get_be32(pb);
37ffe34b
BC
666 else if (atom.type == MKTAG('c','o','6','4'))
667 for(i=0; i<entries; i++)
5ca1d879 668 sc->chunk_offsets[i] = get_be64(pb);
37ffe34b 669 else
5ca1d879 670 return -1;
115329f1 671
5ca1d879
ZK
672 return 0;
673}
674
2288834f
BC
675/**
676 * Compute codec id for 'lpcm' tag.
677 * See CoreAudioTypes and AudioStreamBasicDescription at Apple.
678 */
fb65d2ca 679static enum CodecID mov_get_lpcm_codec_id(int bps, int flags)
2288834f
BC
680{
681 if (flags & 1) { // floating point
682 if (flags & 2) { // big endian
683 if (bps == 32) return CODEC_ID_PCM_F32BE;
7e4b3fb8 684 else if (bps == 64) return CODEC_ID_PCM_F64BE;
2288834f 685 } else {
7e4b3fb8
BC
686 if (bps == 32) return CODEC_ID_PCM_F32LE;
687 else if (bps == 64) return CODEC_ID_PCM_F64LE;
2288834f
BC
688 }
689 } else {
690 if (flags & 2) {
691 if (bps == 8)
692 // signed integer
693 if (flags & 4) return CODEC_ID_PCM_S8;
694 else return CODEC_ID_PCM_U8;
695 else if (bps == 16) return CODEC_ID_PCM_S16BE;
696 else if (bps == 24) return CODEC_ID_PCM_S24BE;
697 else if (bps == 32) return CODEC_ID_PCM_S32BE;
698 } else {
699 if (bps == 8)
700 if (flags & 4) return CODEC_ID_PCM_S8;
701 else return CODEC_ID_PCM_U8;
021b8ae3 702 else if (bps == 16) return CODEC_ID_PCM_S16LE;
2288834f
BC
703 else if (bps == 24) return CODEC_ID_PCM_S24LE;
704 else if (bps == 32) return CODEC_ID_PCM_S32LE;
705 }
706 }
fb65d2ca 707 return CODEC_ID_NONE;
2288834f
BC
708}
709
5ca1d879
ZK
710static int mov_read_stsd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
711{
712 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
e4141433 713 MOVStreamContext *sc = st->priv_data;
baf9fb32 714 int j, entries, pseudo_stream_id;
b595afaa 715
6cea494e 716 get_byte(pb); /* version */
23f08617 717 get_be24(pb); /* flags */
6cea494e 718
6cea494e
ZK
719 entries = get_be32(pb);
720
117a9190
BC
721 for(pseudo_stream_id=0; pseudo_stream_id<entries; pseudo_stream_id++) {
722 //Parsing Sample description table
b6a17df4 723 enum CodecID id;
221e21b7 724 int dref_id;
de23f234 725 MOV_atom_t a = { 0, 0, 0 };
3840147e 726 offset_t start_pos = url_ftell(pb);
bb270c08 727 int size = get_be32(pb); /* size */
baf9fb32 728 uint32_t format = get_le32(pb); /* data format */
5cd62665 729
6cea494e
ZK
730 get_be32(pb); /* reserved */
731 get_be16(pb); /* reserved */
221e21b7 732 dref_id = get_be16(pb);
0e7eed09 733
744a9c75 734 if (st->codec->codec_tag &&
978677a7 735 st->codec->codec_tag != format &&
744a9c75 736 (c->fc->video_codec_id ? codec_get_id(codec_movvideo_tags, format) != c->fc->video_codec_id
1c126b4f 737 : st->codec->codec_tag != MKTAG('j','p','e','g'))
744a9c75 738 ){
7ce68923
DB
739 /* Multiple fourcc, we skip JPEG. This is not correct, we should
740 * export it as a separate AVStream but this needs a few changes
741 * in the MOV demuxer, patch welcome. */
285a3da9 742 av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n");
e7cc4b52
BC
743 url_fskip(pb, size - (url_ftell(pb) - start_pos));
744 continue;
745 }
978677a7 746 sc->pseudo_stream_id = st->codec->codec_tag ? -1 : pseudo_stream_id;
221e21b7 747 sc->dref_id= dref_id;
e7cc4b52 748
bb270c08 749 st->codec->codec_tag = format;
1e5f5e3b 750 id = codec_get_id(codec_movaudio_tags, format);
1c126b4f 751 if (id<=0 && (format&0xFFFF) == 'm'+('s'<<8))
bca7db35
MN
752 id = codec_get_id(codec_wav_tags, bswap_32(format)&0xFFFF);
753
48855b26 754 if (st->codec->codec_type != CODEC_TYPE_VIDEO && id > 0) {
99487f42 755 st->codec->codec_type = CODEC_TYPE_AUDIO;
48855b26 756 } else if (st->codec->codec_type != CODEC_TYPE_AUDIO && /* do not overwrite codec type */
1c126b4f 757 format && format != MKTAG('m','p','4','s')) { /* skip old asf mpeg4 tag */
1e5f5e3b 758 id = codec_get_id(codec_movvideo_tags, format);
99487f42 759 if (id <= 0)
de23f234 760 id = codec_get_id(codec_bmp_tags, format);
99487f42
BC
761 if (id > 0)
762 st->codec->codec_type = CODEC_TYPE_VIDEO;
1e3c9307
MN
763 else if(st->codec->codec_type == CODEC_TYPE_DATA){
764 id = codec_get_id(ff_codec_movsubtitle_tags, format);
765 if(id > 0)
766 st->codec->codec_type = CODEC_TYPE_SUBTITLE;
767 }
99487f42
BC
768 }
769
29c90869
BC
770 dprintf(c->fc, "size=%d 4CC= %c%c%c%c codec_type=%d\n", size,
771 (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff,
772 (format >> 24) & 0xff, st->codec->codec_type);
a20da52c 773
99487f42 774 if(st->codec->codec_type==CODEC_TYPE_VIDEO) {
baf9fb32
BC
775 uint8_t codec_name[32];
776 unsigned int color_depth;
777 int color_greyscale;
baf9fb32 778
01f4895c 779 st->codec->codec_id = id;
6cea494e
ZK
780 get_be16(pb); /* version */
781 get_be16(pb); /* revision level */
782 get_be32(pb); /* vendor */
783 get_be32(pb); /* temporal quality */
94472c1d 784 get_be32(pb); /* spatial quality */
3cb4ee51
BC
785
786 st->codec->width = get_be16(pb); /* width */
787 st->codec->height = get_be16(pb); /* height */
788
6cea494e
ZK
789 get_be32(pb); /* horiz resolution */
790 get_be32(pb); /* vert resolution */
791 get_be32(pb); /* data size, always 0 */
43612ffe 792 get_be16(pb); /* frames per samples */
f8c18cd7 793
eb034aca 794 get_buffer(pb, codec_name, 32); /* codec name, pascal string */
576f1445
BC
795 if (codec_name[0] <= 31) {
796 memcpy(st->codec->codec_name, &codec_name[1],codec_name[0]);
797 st->codec->codec_name[codec_name[0]] = 0;
798 }
5cd62665 799
dd1c8f3e 800 st->codec->bits_per_coded_sample = get_be16(pb); /* depth */
01f4895c 801 st->codec->color_table_id = get_be16(pb); /* colortable id */
0de2157f 802 dprintf(c->fc, "depth %d, ctab id %d\n",
dd1c8f3e 803 st->codec->bits_per_coded_sample, st->codec->color_table_id);
b595afaa 804 /* figure out the palette situation */
dd1c8f3e
LA
805 color_depth = st->codec->bits_per_coded_sample & 0x1F;
806 color_greyscale = st->codec->bits_per_coded_sample & 0x20;
b595afaa
MM
807
808 /* if the depth is 2, 4, or 8 bpp, file is palettized */
115329f1 809 if ((color_depth == 2) || (color_depth == 4) ||
b595afaa 810 (color_depth == 8)) {
47e1d7ef
BC
811 /* for palette traversal */
812 unsigned int color_start, color_count, color_end;
813 unsigned char r, g, b;
814
b595afaa 815 if (color_greyscale) {
47e1d7ef 816 int color_index, color_dec;
b595afaa 817 /* compute the greyscale palette */
dd1c8f3e 818 st->codec->bits_per_coded_sample = color_depth;
b595afaa
MM
819 color_count = 1 << color_depth;
820 color_index = 255;
821 color_dec = 256 / (color_count - 1);
822 for (j = 0; j < color_count; j++) {
823 r = g = b = color_index;
824 c->palette_control.palette[j] =
825 (r << 16) | (g << 8) | (b);
826 color_index -= color_dec;
827 if (color_index < 0)
828 color_index = 0;
829 }
71f36235 830 } else if (st->codec->color_table_id) {
47e1d7ef 831 const uint8_t *color_table;
b595afaa
MM
832 /* if flag bit 3 is set, use the default palette */
833 color_count = 1 << color_depth;
834 if (color_depth == 2)
a90466f7 835 color_table = ff_qt_default_palette_4;
b595afaa 836 else if (color_depth == 4)
a90466f7 837 color_table = ff_qt_default_palette_16;
b595afaa 838 else
a90466f7 839 color_table = ff_qt_default_palette_256;
b595afaa
MM
840
841 for (j = 0; j < color_count; j++) {
842 r = color_table[j * 4 + 0];
843 g = color_table[j * 4 + 1];
844 b = color_table[j * 4 + 2];
845 c->palette_control.palette[j] =
846 (r << 16) | (g << 8) | (b);
847 }
b595afaa 848 } else {
b595afaa
MM
849 /* load the palette from the file */
850 color_start = get_be32(pb);
851 color_count = get_be16(pb);
852 color_end = get_be16(pb);
8b35bd80
MM
853 if ((color_start <= 255) &&
854 (color_end <= 255)) {
9de2919c
MM
855 for (j = color_start; j <= color_end; j++) {
856 /* each R, G, or B component is 16 bits;
857 * only use the top 8 bits; skip alpha bytes
858 * up front */
859 get_byte(pb);
860 get_byte(pb);
861 r = get_byte(pb);
862 get_byte(pb);
863 g = get_byte(pb);
864 get_byte(pb);
865 b = get_byte(pb);
866 get_byte(pb);
867 c->palette_control.palette[j] =
868 (r << 16) | (g << 8) | (b);
8b35bd80 869 }
b595afaa
MM
870 }
871 }
01f4895c
MN
872 st->codec->palctrl = &c->palette_control;
873 st->codec->palctrl->palette_changed = 1;
b595afaa 874 } else
01f4895c 875 st->codec->palctrl = NULL;
de23f234 876 } else if(st->codec->codec_type==CODEC_TYPE_AUDIO) {
aaef2bb3 877 int bits_per_sample, flags;
de23f234 878 uint16_t version = get_be16(pb);
b595afaa 879
99487f42 880 st->codec->codec_id = id;
de23f234
BC
881 get_be16(pb); /* revision level */
882 get_be32(pb); /* vendor */
6d6d7970 883
de23f234 884 st->codec->channels = get_be16(pb); /* channel count */
318c5e05 885 dprintf(c->fc, "audio channels %d\n", st->codec->channels);
dd1c8f3e 886 st->codec->bits_per_coded_sample = get_be16(pb); /* sample size */
de23f234 887
77c75437 888 sc->audio_cid = get_be16(pb);
de23f234
BC
889 get_be16(pb); /* packet size = 0 */
890
891 st->codec->sample_rate = ((get_be32(pb) >> 16));
892
5ef3ad59
BC
893 //Read QT version 1 fields. In version 0 these do not exist.
894 dprintf(c->fc, "version =%d, isom =%d\n",version,c->isom);
895 if(!c->isom) {
896 if(version==1) {
897 sc->samples_per_frame = get_be32(pb);
898 get_be32(pb); /* bytes per packet */
899 sc->bytes_per_frame = get_be32(pb);
900 get_be32(pb); /* bytes per sample */
901 } else if(version==2) {
902 get_be32(pb); /* sizeof struct only */
903 st->codec->sample_rate = av_int2dbl(get_be64(pb)); /* float 64 */
904 st->codec->channels = get_be32(pb);
905 get_be32(pb); /* always 0x7F000000 */
dd1c8f3e 906 st->codec->bits_per_coded_sample = get_be32(pb); /* bits per channel if sound is uncompressed */
aaef2bb3 907 flags = get_be32(pb); /* lcpm format specific flag */
9184d53a
BC
908 sc->bytes_per_frame = get_be32(pb); /* bytes per audio packet if constant */
909 sc->samples_per_frame = get_be32(pb); /* lpcm frames per audio packet if constant */
2288834f 910 if (format == MKTAG('l','p','c','m'))
dd1c8f3e 911 st->codec->codec_id = mov_get_lpcm_codec_id(st->codec->bits_per_coded_sample, flags);
5ef3ad59
BC
912 }
913 }
914
de23f234 915 switch (st->codec->codec_id) {
b72708f8
BC
916 case CODEC_ID_PCM_S8:
917 case CODEC_ID_PCM_U8:
dd1c8f3e 918 if (st->codec->bits_per_coded_sample == 16)
b72708f8
BC
919 st->codec->codec_id = CODEC_ID_PCM_S16BE;
920 break;
0dd39bfe 921 case CODEC_ID_PCM_S16LE:
de23f234 922 case CODEC_ID_PCM_S16BE:
dd1c8f3e 923 if (st->codec->bits_per_coded_sample == 8)
de23f234 924 st->codec->codec_id = CODEC_ID_PCM_S8;
dd1c8f3e 925 else if (st->codec->bits_per_coded_sample == 24)
6b477e1b
BC
926 st->codec->codec_id =
927 st->codec->codec_id == CODEC_ID_PCM_S16BE ?
928 CODEC_ID_PCM_S24BE : CODEC_ID_PCM_S24LE;
de23f234 929 break;
53152765
BC
930 /* set values for old format before stsd version 1 appeared */
931 case CODEC_ID_MACE3:
932 sc->samples_per_frame = 6;
933 sc->bytes_per_frame = 2*st->codec->channels;
934 break;
935 case CODEC_ID_MACE6:
936 sc->samples_per_frame = 6;
937 sc->bytes_per_frame = 1*st->codec->channels;
938 break;
939 case CODEC_ID_ADPCM_IMA_QT:
940 sc->samples_per_frame = 64;
941 sc->bytes_per_frame = 34*st->codec->channels;
942 break;
cc326d2b
BC
943 case CODEC_ID_GSM:
944 sc->samples_per_frame = 160;
945 sc->bytes_per_frame = 33;
946 break;
de23f234
BC
947 default:
948 break;
6d6d7970 949 }
14342fd5 950
9770089d
BC
951 bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
952 if (bits_per_sample) {
dd1c8f3e 953 st->codec->bits_per_coded_sample = bits_per_sample;
9770089d
BC
954 sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
955 }
cc8d87b7
MN
956 } else if(st->codec->codec_type==CODEC_TYPE_SUBTITLE){
957 st->codec->codec_id= id;
de23f234
BC
958 } else {
959 /* other codec type, just skip (rtp, mp4s, tmcd ...) */
960 url_fskip(pb, size - (url_ftell(pb) - start_pos));
6cea494e 961 }
de23f234
BC
962 /* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */
963 a.size = size - (url_ftell(pb) - start_pos);
9cf0419b
PI
964 if (a.size > 8) {
965 if (mov_read_default(c, pb, a) < 0)
966 return -1;
967 } else if (a.size > 0)
de23f234 968 url_fskip(pb, a.size);
6cea494e 969 }
115329f1 970
60f5c96e 971 if(st->codec->codec_type==CODEC_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1)
302c389e 972 st->codec->sample_rate= sc->time_scale;
e31bd3e3 973
d00f8e17 974 /* special codec parameters handling */
e31bd3e3 975 switch (st->codec->codec_id) {
989ac5a6 976#ifdef CONFIG_DV_DEMUXER
b60c0454
BC
977 case CODEC_ID_DVAUDIO:
978 c->dv_fctx = av_alloc_format_context();
979 c->dv_demux = dv_init_demux(c->dv_fctx);
980 if (!c->dv_demux) {
981 av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
982 return -1;
983 }
984 sc->dv_audio_container = 1;
985 st->codec->codec_id = CODEC_ID_PCM_S16LE;
986 break;
989ac5a6 987#endif
b95319a2 988 /* no ifdef since parameters are always those */
3f78a3a9 989 case CODEC_ID_QCELP:
b95319a2 990 case CODEC_ID_AMR_NB:
aeb62788 991 case CODEC_ID_AMR_WB:
cfb5a2ab 992 st->codec->frame_size= sc->samples_per_frame;
b95319a2
BC
993 st->codec->channels= 1; /* really needed */
994 break;
a41104f8 995 case CODEC_ID_MP2:
c59f24e6 996 case CODEC_ID_MP3:
95a07973 997 st->codec->codec_type = CODEC_TYPE_AUDIO; /* force type after stsd for m1a hdlr */
57004ff1 998 st->need_parsing = AVSTREAM_PARSE_FULL;
a41104f8 999 break;
5610f20e 1000 case CODEC_ID_GSM:
74e9b9ae
BC
1001 case CODEC_ID_ADPCM_MS:
1002 case CODEC_ID_ADPCM_IMA_WAV:
1003 st->codec->block_align = sc->bytes_per_frame;
1004 break;
be511925
BC
1005 case CODEC_ID_ALAC:
1006 if (st->codec->extradata_size == 36)
1007 st->codec->frame_size = AV_RB32((st->codec->extradata+12));
1008 break;
e31bd3e3
BC
1009 default:
1010 break;
1011 }
5cd62665 1012
6cea494e
ZK
1013 return 0;
1014}
1015
5ca1d879 1016static int mov_read_stsc(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
6cea494e 1017{
5ca1d879 1018 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
e4141433 1019 MOVStreamContext *sc = st->priv_data;
568e18b1 1020 unsigned int i, entries;
b6a17df4 1021
6cea494e 1022 get_byte(pb); /* version */
23f08617 1023 get_be24(pb); /* flags */
6cea494e
ZK
1024
1025 entries = get_be32(pb);
115329f1 1026
e23848a4 1027 if(entries >= UINT_MAX / sizeof(MOV_stsc_t))
568e18b1 1028 return -1;
115329f1 1029
f8c18cd7
BC
1030 dprintf(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
1031
6cea494e 1032 sc->sample_to_chunk_sz = entries;
e23848a4 1033 sc->sample_to_chunk = av_malloc(entries * sizeof(MOV_stsc_t));
b6a17df4
ZK
1034 if (!sc->sample_to_chunk)
1035 return -1;
6cea494e
ZK
1036 for(i=0; i<entries; i++) {
1037 sc->sample_to_chunk[i].first = get_be32(pb);
1038 sc->sample_to_chunk[i].count = get_be32(pb);
1039 sc->sample_to_chunk[i].id = get_be32(pb);
6cea494e
ZK
1040 }
1041 return 0;
1042}
1043
247d56f5
BB
1044static int mov_read_stss(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1045{
1046 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
e4141433 1047 MOVStreamContext *sc = st->priv_data;
568e18b1 1048 unsigned int i, entries;
247d56f5 1049
247d56f5 1050 get_byte(pb); /* version */
23f08617 1051 get_be24(pb); /* flags */
247d56f5
BB
1052
1053 entries = get_be32(pb);
115329f1 1054
1c02d96f 1055 if(entries >= UINT_MAX / sizeof(int))
568e18b1 1056 return -1;
115329f1 1057
247d56f5 1058 sc->keyframe_count = entries;
f8c18cd7
BC
1059
1060 dprintf(c->fc, "keyframe_count = %d\n", sc->keyframe_count);
1061
1c02d96f 1062 sc->keyframes = av_malloc(entries * sizeof(int));
247d56f5
BB
1063 if (!sc->keyframes)
1064 return -1;
1065 for(i=0; i<entries; i++) {
1066 sc->keyframes[i] = get_be32(pb);
f8c18cd7 1067 //dprintf(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
247d56f5
BB
1068 }
1069 return 0;
1070}
1071
5ca1d879 1072static int mov_read_stsz(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
6cea494e 1073{
5ca1d879 1074 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
e4141433 1075 MOVStreamContext *sc = st->priv_data;
b72708f8 1076 unsigned int i, entries, sample_size;
b6a17df4 1077
6cea494e 1078 get_byte(pb); /* version */
23f08617 1079 get_be24(pb); /* flags */
5cd62665 1080
b72708f8
BC
1081 sample_size = get_be32(pb);
1082 if (!sc->sample_size) /* do not overwrite value computed in stsd */
1083 sc->sample_size = sample_size;
6cea494e 1084 entries = get_be32(pb);
1c02d96f 1085 if(entries >= UINT_MAX / sizeof(int))
568e18b1
MN
1086 return -1;
1087
6cea494e 1088 sc->sample_count = entries;
b72708f8
BC
1089 if (sample_size)
1090 return 0;
1091
f8c18cd7
BC
1092 dprintf(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, sc->sample_count);
1093
1c02d96f 1094 sc->sample_sizes = av_malloc(entries * sizeof(int));
b6a17df4
ZK
1095 if (!sc->sample_sizes)
1096 return -1;
eb61405a 1097 for(i=0; i<entries; i++)
6cea494e 1098 sc->sample_sizes[i] = get_be32(pb);
6cea494e
ZK
1099 return 0;
1100}
1101
5ca1d879 1102static int mov_read_stts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
0147f198 1103{
5ca1d879 1104 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
e4141433 1105 MOVStreamContext *sc = st->priv_data;
568e18b1 1106 unsigned int i, entries;
d957696f
MN
1107 int64_t duration=0;
1108 int64_t total_sample_count=0;
b6a17df4 1109
0147f198 1110 get_byte(pb); /* version */
23f08617 1111 get_be24(pb); /* flags */
0147f198 1112 entries = get_be32(pb);
e23848a4 1113 if(entries >= UINT_MAX / sizeof(MOV_stts_t))
568e18b1 1114 return -1;
891f64b3 1115
cd7352d5 1116 sc->stts_count = entries;
e23848a4 1117 sc->stts_data = av_malloc(entries * sizeof(MOV_stts_t));
c1da59fa
BC
1118 if (!sc->stts_data)
1119 return -1;
f8c18cd7 1120 dprintf(c->fc, "track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries);
cd7352d5
MN
1121
1122 sc->time_rate=0;
1123
0147f198 1124 for(i=0; i<entries; i++) {
cd461d48
MN
1125 int sample_duration;
1126 int sample_count;
0147f198 1127
891f64b3 1128 sample_count=get_be32(pb);
0147f198 1129 sample_duration = get_be32(pb);
cd7352d5
MN
1130 sc->stts_data[i].count= sample_count;
1131 sc->stts_data[i].duration= sample_duration;
1132
1133 sc->time_rate= ff_gcd(sc->time_rate, sample_duration);
961e0ccd 1134
318c5e05 1135 dprintf(c->fc, "sample_count=%d, sample_duration=%d\n",sample_count,sample_duration);
4e5ef14f 1136
7e815047 1137 duration+=(int64_t)sample_duration*sample_count;
891f64b3 1138 total_sample_count+=sample_count;
891f64b3 1139 }
1140
961e0ccd
MN
1141 st->nb_frames= total_sample_count;
1142 if(duration)
1143 st->duration= duration;
0147f198
FR
1144 return 0;
1145}
1146
c4ac052b
MN
1147static int mov_read_ctts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1148{
70a61ed4 1149 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
e4141433 1150 MOVStreamContext *sc = st->priv_data;
c4ac052b
MN
1151 unsigned int i, entries;
1152
c4ac052b 1153 get_byte(pb); /* version */
23f08617 1154 get_be24(pb); /* flags */
c4ac052b 1155 entries = get_be32(pb);
e23848a4 1156 if(entries >= UINT_MAX / sizeof(MOV_stts_t))
c4ac052b
MN
1157 return -1;
1158
70a61ed4 1159 sc->ctts_count = entries;
e23848a4 1160 sc->ctts_data = av_malloc(entries * sizeof(MOV_stts_t));
c1da59fa
BC
1161 if (!sc->ctts_data)
1162 return -1;
318c5e05 1163 dprintf(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
4e5ef14f 1164
c4ac052b 1165 for(i=0; i<entries; i++) {
70a61ed4
MN
1166 int count =get_be32(pb);
1167 int duration =get_be32(pb);
1168
b0519015 1169 if (duration < 0) {
0c5f76f7
BC
1170 sc->wrong_dts = 1;
1171 st->codec->has_b_frames = 1;
b0519015 1172 }
70a61ed4
MN
1173 sc->ctts_data[i].count = count;
1174 sc->ctts_data[i].duration= duration;
1175
0c5f76f7 1176 sc->time_rate= ff_gcd(sc->time_rate, FFABS(duration));
c4ac052b
MN
1177 }
1178 return 0;
1179}
1180
1e77810d
BC
1181static void mov_build_index(MOVContext *mov, AVStream *st)
1182{
1183 MOVStreamContext *sc = st->priv_data;
1184 offset_t current_offset;
1185 int64_t current_dts = 0;
1186 unsigned int stts_index = 0;
1187 unsigned int stsc_index = 0;
1188 unsigned int stss_index = 0;
1189 unsigned int i, j;
1190
d3bc61ac
BC
1191 /* only use old uncompressed audio chunk demuxing when stts specifies it */
1192 if (!(st->codec->codec_type == CODEC_TYPE_AUDIO &&
1193 sc->stts_count == 1 && sc->stts_data[0].duration == 1)) {
1e77810d
BC
1194 unsigned int current_sample = 0;
1195 unsigned int stts_sample = 0;
1196 unsigned int keyframe, sample_size;
1197 unsigned int distance = 0;
1198 int key_off = sc->keyframes && sc->keyframes[0] == 1;
1199
1200 st->nb_frames = sc->sample_count;
1201 for (i = 0; i < sc->chunk_count; i++) {
1202 current_offset = sc->chunk_offsets[i];
1203 if (stsc_index + 1 < sc->sample_to_chunk_sz &&
1204 i + 1 == sc->sample_to_chunk[stsc_index + 1].first)
1205 stsc_index++;
1206 for (j = 0; j < sc->sample_to_chunk[stsc_index].count; j++) {
1207 if (current_sample >= sc->sample_count) {
1208 av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
1209 goto out;
1210 }
1211 keyframe = !sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index];
1212 if (keyframe) {
1213 distance = 0;
1214 if (stss_index + 1 < sc->keyframe_count)
1215 stss_index++;
1216 }
1217 sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
978677a7 1218 if(sc->pseudo_stream_id == -1 ||
585dac65 1219 sc->sample_to_chunk[stsc_index].id - 1 == sc->pseudo_stream_id) {
1e77810d
BC
1220 av_add_index_entry(st, current_offset, current_dts, sample_size, distance,
1221 keyframe ? AVINDEX_KEYFRAME : 0);
585dac65
BC
1222 dprintf(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
1223 "size %d, distance %d, keyframe %d\n", st->index, current_sample,
1224 current_offset, current_dts, sample_size, distance, keyframe);
1225 }
1e77810d
BC
1226 current_offset += sample_size;
1227 assert(sc->stts_data[stts_index].duration % sc->time_rate == 0);
1228 current_dts += sc->stts_data[stts_index].duration / sc->time_rate;
1229 distance++;
1230 stts_sample++;
1231 current_sample++;
1232 if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
1233 stts_sample = 0;
1234 stts_index++;
1235 }
1236 }
1237 }
1238 } else { /* read whole chunk */
1239 unsigned int chunk_samples, chunk_size, chunk_duration;
1240 unsigned int frames = 1;
1241 for (i = 0; i < sc->chunk_count; i++) {
1242 current_offset = sc->chunk_offsets[i];
1243 if (stsc_index + 1 < sc->sample_to_chunk_sz &&
1244 i + 1 == sc->sample_to_chunk[stsc_index + 1].first)
1245 stsc_index++;
1246 chunk_samples = sc->sample_to_chunk[stsc_index].count;
1247 /* get chunk size, beware of alaw/ulaw/mace */
1248 if (sc->samples_per_frame > 0 &&
1249 (chunk_samples * sc->bytes_per_frame % sc->samples_per_frame == 0)) {
3b8c000d 1250 if (sc->samples_per_frame < 160)
1e77810d
BC
1251 chunk_size = chunk_samples * sc->bytes_per_frame / sc->samples_per_frame;
1252 else {
1253 chunk_size = sc->bytes_per_frame;
1254 frames = chunk_samples / sc->samples_per_frame;
1255 chunk_samples = sc->samples_per_frame;
1256 }
48a55290 1257 } else
1e77810d 1258 chunk_size = chunk_samples * sc->sample_size;
1e77810d
BC
1259 for (j = 0; j < frames; j++) {
1260 av_add_index_entry(st, current_offset, current_dts, chunk_size, 0, AVINDEX_KEYFRAME);
1261 /* get chunk duration */
1262 chunk_duration = 0;
1263 while (chunk_samples > 0) {
1264 if (chunk_samples < sc->stts_data[stts_index].count) {
1265 chunk_duration += sc->stts_data[stts_index].duration * chunk_samples;
1266 sc->stts_data[stts_index].count -= chunk_samples;
1267 break;
1268 } else {
1269 chunk_duration += sc->stts_data[stts_index].duration * chunk_samples;
1270 chunk_samples -= sc->stts_data[stts_index].count;
1271 if (stts_index + 1 < sc->stts_count)
1272 stts_index++;
1273 }
1274 }
1275 current_offset += sc->bytes_per_frame;
117a9190
BC
1276 dprintf(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", "
1277 "size %d, duration %d\n", st->index, i, current_offset, current_dts,
1278 chunk_size, chunk_duration);
1e77810d
BC
1279 assert(chunk_duration % sc->time_rate == 0);
1280 current_dts += chunk_duration / sc->time_rate;
1281 }
1282 }
1283 }
1284 out:
1285 /* adjust sample count to avindex entries */
1286 sc->sample_count = st->nb_index_entries;
1287}
bd991df2 1288
5ca1d879
ZK
1289static int mov_read_trak(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1290{
1291 AVStream *st;
1292 MOVStreamContext *sc;
bd991df2 1293 int ret;
5ca1d879 1294
5ca1d879 1295 st = av_new_stream(c->fc, c->fc->nb_streams);
3efe8848 1296 if (!st) return AVERROR(ENOMEM);
9a630c25 1297 sc = av_mallocz(sizeof(MOVStreamContext));
2922cbdb 1298 if (!sc) return AVERROR(ENOMEM);
5ca1d879 1299
5ca1d879 1300 st->priv_data = sc;
05edc1a7 1301 st->codec->codec_type = CODEC_TYPE_DATA;
25c4950e 1302 st->start_time = 0; /* XXX: check */
5ca1d879 1303
bd991df2
BC
1304 if ((ret = mov_read_default(c, pb, atom)) < 0)
1305 return ret;
1306
1307 /* sanity checks */
5e788d58
BC
1308 if(sc->chunk_count && (!sc->stts_count || !sc->sample_to_chunk_sz ||
1309 (!sc->sample_size && !sc->sample_count))){
6282c5f4
BC
1310 av_log(c->fc, AV_LOG_ERROR, "stream %d, missing mandatory atoms, broken header\n",
1311 st->index);
bd991df2
BC
1312 sc->sample_count = 0; //ignore track
1313 return 0;
1314 }
1315 if(!sc->time_rate)
1316 sc->time_rate=1;
1317 if(!sc->time_scale)
1318 sc->time_scale= c->time_scale;
1319 av_set_pts_info(st, 64, sc->time_rate, sc->time_scale);
1320
3f78a3a9
BC
1321 if (st->codec->codec_type == CODEC_TYPE_AUDIO &&
1322 !st->codec->frame_size && sc->stts_count == 1)
bd991df2
BC
1323 st->codec->frame_size = av_rescale(sc->time_rate, st->codec->sample_rate, sc->time_scale);
1324
1325 if(st->duration != AV_NOPTS_VALUE){
1326 assert(st->duration % sc->time_rate == 0);
1327 st->duration /= sc->time_rate;
1328 }
1329 sc->ffindex = st->index;
1330 mov_build_index(c, st);
1331
1332 if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) {
1333 if (url_fopen(&sc->pb, sc->drefs[sc->dref_id-1].path, URL_RDONLY) < 0)
9e81a0ce
BC
1334 av_log(c->fc, AV_LOG_ERROR, "stream %d, error opening file %s: %s\n",
1335 st->index, sc->drefs[sc->dref_id-1].path, strerror(errno));
bd991df2
BC
1336 } else
1337 sc->pb = c->fc->pb;
1338
1339 switch (st->codec->codec_id) {
1340#ifdef CONFIG_H261_DECODER
1341 case CODEC_ID_H261:
1342#endif
1343#ifdef CONFIG_H263_DECODER
1344 case CODEC_ID_H263:
1345#endif
1346#ifdef CONFIG_MPEG4_DECODER
1347 case CODEC_ID_MPEG4:
1348#endif
1349 st->codec->width= 0; /* let decoder init width/height */
1350 st->codec->height= 0;
1351 break;
bd991df2 1352 }
f9900374
BC
1353
1354 /* Do not need those anymore. */
1355 av_freep(&sc->chunk_offsets);
1356 av_freep(&sc->sample_to_chunk);
1357 av_freep(&sc->sample_sizes);
1358 av_freep(&sc->keyframes);
1359 av_freep(&sc->stts_data);
1360
bd991df2 1361 return 0;
5ca1d879
ZK
1362}
1363
d2ace376
BF
1364static void mov_parse_udta_string(ByteIOContext *pb, char *str, int size)
1365{
1366 uint16_t str_size = get_be16(pb); /* string length */;
1367
1368 get_be16(pb); /* skip language */
1369 get_buffer(pb, str, FFMIN(size, str_size));
1370}
1371
1372static int mov_read_udta(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1373{
1374 uint64_t end = url_ftell(pb) + atom.size;
1375
1376 while (url_ftell(pb) + 8 < end) {
1377 uint32_t tag_size = get_be32(pb);
1378 uint32_t tag = get_le32(pb);
1379 uint64_t next = url_ftell(pb) + tag_size - 8;
1380
4e240985 1381 if (tag_size < 8 || next > end) // stop if tag_size is wrong
aaac6c29
BC
1382 break;
1383
d2ace376
BF
1384 switch (tag) {
1385 case MKTAG(0xa9,'n','a','m'):
1386 mov_parse_udta_string(pb, c->fc->title, sizeof(c->fc->title));
1387 break;
1388 case MKTAG(0xa9,'w','r','t'):
1389 mov_parse_udta_string(pb, c->fc->author, sizeof(c->fc->author));
1390 break;
1391 case MKTAG(0xa9,'c','p','y'):
1392 mov_parse_udta_string(pb, c->fc->copyright, sizeof(c->fc->copyright));
1393 break;
1394 case MKTAG(0xa9,'i','n','f'):
1395 mov_parse_udta_string(pb, c->fc->comment, sizeof(c->fc->comment));
1396 break;
1397 default:
1398 break;
1399 }
1400
1401 url_fseek(pb, next, SEEK_SET);
1402 }
1403
1404 return 0;
1405}
1406
5ca1d879
ZK
1407static int mov_read_tkhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1408{
ec072669
JS
1409 int i;
1410 int width;
1411 int height;
1412 int64_t disp_transform[2];
1413 int display_matrix[3][2];
f444b977
BC
1414 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1415 int version = get_byte(pb);
5ca1d879 1416
23f08617 1417 get_be24(pb); /* flags */
5ca1d879
ZK
1418 /*
1419 MOV_TRACK_ENABLED 0x0001
1420 MOV_TRACK_IN_MOVIE 0x0002
1421 MOV_TRACK_IN_PREVIEW 0x0004
1422 MOV_TRACK_IN_POSTER 0x0008
1423 */
1424
1175561e
BC
1425 if (version == 1) {
1426 get_be64(pb);
1427 get_be64(pb);
1428 } else {
1429 get_be32(pb); /* creation time */
1430 get_be32(pb); /* modification time */
1431 }
5ca1d879
ZK
1432 st->id = (int)get_be32(pb); /* track id (NOT 0 !)*/
1433 get_be32(pb); /* reserved */
25c4950e 1434 st->start_time = 0; /* check */
117a9190
BC
1435 /* highlevel (considering edits) duration in movie timebase */
1436 (version == 1) ? get_be64(pb) : get_be32(pb);
5ca1d879
ZK
1437 get_be32(pb); /* reserved */
1438 get_be32(pb); /* reserved */
1439
1440 get_be16(pb); /* layer */
1441 get_be16(pb); /* alternate group */
1442 get_be16(pb); /* volume */
1443 get_be16(pb); /* reserved */
1444
ec072669
JS
1445 //read in the display matrix (outlined in ISO 14496-12, Section 6.2.2)
1446 // they're kept in fixed point format through all calculations
1447 // ignore u,v,z b/c we don't need the scale factor to calc aspect ratio
1448 for (i = 0; i < 3; i++) {
1449 display_matrix[i][0] = get_be32(pb); // 16.16 fixed point
1450 display_matrix[i][1] = get_be32(pb); // 16.16 fixed point
1451 get_be32(pb); // 2.30 fixed point (not used)
1452 }
5ca1d879 1453
ec072669
JS
1454 width = get_be32(pb); // 16.16 fixed point track width
1455 height = get_be32(pb); // 16.16 fixed point track height
1456
1457 //transform the display width/height according to the matrix
1458 // skip this if the display matrix is the default identity matrix
1459 // to keep the same scale, use [width height 1<<16]
1460 if (width && height &&
1461 (display_matrix[0][0] != 65536 || display_matrix[0][1] ||
1462 display_matrix[1][0] || display_matrix[1][1] != 65536 ||
1463 display_matrix[2][0] || display_matrix[2][1])) {
1464 for (i = 0; i < 2; i++)
1465 disp_transform[i] =
1466 (int64_t) width * display_matrix[0][i] +
1467 (int64_t) height * display_matrix[1][i] +
1468 ((int64_t) display_matrix[2][i] << 16);
1469
1470 //sample aspect ratio is new width/height divided by old width/height
59729451 1471 st->sample_aspect_ratio = av_d2q(
ec072669
JS
1472 ((double) disp_transform[0] * height) /
1473 ((double) disp_transform[1] * width), INT_MAX);
1474 }
5ca1d879
ZK
1475 return 0;
1476}
1477
61aedb0f
BC
1478static int mov_read_tfhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1479{
1480 MOVFragment *frag = &c->fragment;
1481 MOVTrackExt *trex = NULL;
1482 int flags, track_id, i;
1483
1484 get_byte(pb); /* version */
1485 flags = get_be24(pb);
1486
1487 track_id = get_be32(pb);
1488 if (!track_id || track_id > c->fc->nb_streams)
1489 return -1;
1490 frag->track_id = track_id;
1491 for (i = 0; i < c->trex_count; i++)
1492 if (c->trex_data[i].track_id == frag->track_id) {
1493 trex = &c->trex_data[i];
1494 break;
1495 }
1496 if (!trex) {
1497 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding trex\n");
1498 return -1;
1499 }
1500
1501 if (flags & 0x01) frag->base_data_offset = get_be64(pb);
1502 else frag->base_data_offset = frag->moof_offset;
1503 if (flags & 0x02) frag->stsd_id = get_be32(pb);
1504 else frag->stsd_id = trex->stsd_id;
1505
1506 frag->duration = flags & 0x08 ? get_be32(pb) : trex->duration;
1507 frag->size = flags & 0x10 ? get_be32(pb) : trex->size;
1508 frag->flags = flags & 0x20 ? get_be32(pb) : trex->flags;
1509 dprintf(c->fc, "frag flags 0x%x\n", frag->flags);
1510 return 0;
1511}
1512
1513static int mov_read_trex(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1514{
1515 MOVTrackExt *trex;
1516
1517 if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data))
1518 return -1;
1519 c->trex_data = av_realloc(c->trex_data, (c->trex_count+1)*sizeof(*c->trex_data));
1520 if (!c->trex_data)
1521 return AVERROR(ENOMEM);
1522 trex = &c->trex_data[c->trex_count++];
1523 get_byte(pb); /* version */
1524 get_be24(pb); /* flags */
1525 trex->track_id = get_be32(pb);
1526 trex->stsd_id = get_be32(pb);
1527 trex->duration = get_be32(pb);
1528 trex->size = get_be32(pb);
1529 trex->flags = get_be32(pb);
1530 return 0;
1531}
1532
1533static int mov_read_trun(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1534{
1535 MOVFragment *frag = &c->fragment;
44e43aab
BC
1536 AVStream *st;
1537 MOVStreamContext *sc;
61aedb0f
BC
1538 uint64_t offset;
1539 int64_t dts;
1540 int data_offset = 0;
1541 unsigned entries, first_sample_flags = frag->flags;
1542 int flags, distance, i;
1543
44e43aab
BC
1544 if (!frag->track_id || frag->track_id > c->fc->nb_streams)
1545 return -1;
1546 st = c->fc->streams[frag->track_id-1];
1547 sc = st->priv_data;
61aedb0f
BC
1548 if (sc->pseudo_stream_id+1 != frag->stsd_id)
1549 return 0;
61aedb0f
BC
1550 get_byte(pb); /* version */
1551 flags = get_be24(pb);
1552 entries = get_be32(pb);
1553 dprintf(c->fc, "flags 0x%x entries %d\n", flags, entries);
1554 if (flags & 0x001) data_offset = get_be32(pb);
1555 if (flags & 0x004) first_sample_flags = get_be32(pb);
1556 if (flags & 0x800) {
1557 if ((uint64_t)entries+sc->ctts_count >= UINT_MAX/sizeof(*sc->ctts_data))
1558 return -1;
1559 sc->ctts_data = av_realloc(sc->ctts_data,
1560 (entries+sc->ctts_count)*sizeof(*sc->ctts_data));
1561 if (!sc->ctts_data)
1562 return AVERROR(ENOMEM);
1563 }
1564 dts = st->duration;
1565 offset = frag->base_data_offset + data_offset;
1566 distance = 0;
1567 dprintf(c->fc, "first sample flags 0x%x\n", first_sample_flags);
1568 for (i = 0; i < entries; i++) {
1569 unsigned sample_size = frag->size;
1570 int sample_flags = i ? frag->flags : first_sample_flags;
1571 unsigned sample_duration = frag->duration;
1572 int keyframe;
1573
1574 if (flags & 0x100) sample_duration = get_be32(pb);
1575 if (flags & 0x200) sample_size = get_be32(pb);
1576 if (flags & 0x400) sample_flags = get_be32(pb);
1577 if (flags & 0x800) {
1578 sc->ctts_data[sc->ctts_count].count = 1;
1579 sc->ctts_data[sc->ctts_count].duration = get_be32(pb);
1580 sc->ctts_count++;
1581 }
1582 if ((keyframe = st->codec->codec_type == CODEC_TYPE_AUDIO ||
1583 (flags & 0x004 && !i && !sample_flags) || sample_flags & 0x2000000))
1584 distance = 0;
1585 av_add_index_entry(st, offset, dts, sample_size, distance,
1586 keyframe ? AVINDEX_KEYFRAME : 0);
1587 dprintf(c->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
1588 "size %d, distance %d, keyframe %d\n", st->index, sc->sample_count+i,
1589 offset, dts, sample_size, distance, keyframe);
1590 distance++;
1591 assert(sample_duration % sc->time_rate == 0);
1592 dts += sample_duration / sc->time_rate;
1593 offset += sample_size;
1594 }
1595 frag->moof_offset = offset;
1596 sc->sample_count = st->nb_index_entries;
1597 st->duration = dts;
1598 return 0;
1599}
1600
5ca1d879
ZK
1601/* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
1602/* like the files created with Adobe Premiere 5.0, for samples see */
1603/* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
1604static int mov_read_wide(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1605{
1606 int err;
5ca1d879 1607
5ca1d879
ZK
1608 if (atom.size < 8)
1609 return 0; /* continue */
1610 if (get_be32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
1611 url_fskip(pb, atom.size - 4);
1612 return 0;
1613 }
1614 atom.type = get_le32(pb);
1615 atom.offset += 8;
1616 atom.size -= 8;
1c126b4f 1617 if (atom.type != MKTAG('m','d','a','t')) {
5ca1d879
ZK
1618 url_fskip(pb, atom.size);
1619 return 0;
1620 }
1621 err = mov_read_mdat(c, pb, atom);
5ca1d879
ZK
1622 return err;
1623}
1624
5ca1d879 1625static int mov_read_cmov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
0147f198 1626{
d966b2f0 1627#ifdef CONFIG_ZLIB
0147f198 1628 ByteIOContext ctx;
b6a17df4
ZK
1629 uint8_t *cmov_data;
1630 uint8_t *moov_data; /* uncompressed data */
0147f198 1631 long cmov_len, moov_len;
6f04eb1e 1632 int ret = -1;
b6a17df4 1633
0147f198 1634 get_be32(pb); /* dcom atom */
1c126b4f 1635 if (get_le32(pb) != MKTAG('d','c','o','m'))
0147f198 1636 return -1;
1c126b4f 1637 if (get_le32(pb) != MKTAG('z','l','i','b')) {
4e5ef14f 1638 av_log(NULL, AV_LOG_ERROR, "unknown compression for cmov atom !");
0147f198
FR
1639 return -1;
1640 }
1641 get_be32(pb); /* cmvd atom */
1c126b4f 1642 if (get_le32(pb) != MKTAG('c','m','v','d'))
0147f198
FR
1643 return -1;
1644 moov_len = get_be32(pb); /* uncompressed size */
5ca1d879 1645 cmov_len = atom.size - 6 * 4;
5cd62665 1646
9a630c25 1647 cmov_data = av_malloc(cmov_len);
0147f198
FR
1648 if (!cmov_data)
1649 return -1;
9a630c25 1650 moov_data = av_malloc(moov_len);
0147f198
FR
1651 if (!moov_data) {
1652 av_free(cmov_data);
1653 return -1;
1654 }
1655 get_buffer(pb, cmov_data, cmov_len);
b6a17df4 1656 if(uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
6f04eb1e 1657 goto free_and_return;
942f3bb5 1658 if(init_put_byte(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
6f04eb1e 1659 goto free_and_return;
1c126b4f 1660 atom.type = MKTAG('m','o','o','v');
5ca1d879
ZK
1661 atom.offset = 0;
1662 atom.size = moov_len;
9ed83b0a 1663#ifdef DEBUG
dbb4f00a 1664// { int fd = open("/tmp/uncompheader.mov", O_WRONLY | O_CREAT); write(fd, moov_data, moov_len); close(fd); }
9ed83b0a 1665#endif
5ca1d879 1666 ret = mov_read_default(c, &ctx, atom);
6f04eb1e 1667free_and_return:
0147f198
FR
1668 av_free(moov_data);
1669 av_free(cmov_data);
1670 return ret;
d966b2f0
BC
1671#else
1672 av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
1673 return -1;
0147f198 1674#endif
d966b2f0 1675}
0147f198 1676
baf25c9d
GC
1677/* edit list atom */
1678static int mov_read_elst(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1679{
7c622eed 1680 MOVStreamContext *sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
e0977c80
BC
1681 int i, edit_count;
1682
1683 get_byte(pb); /* version */
23f08617 1684 get_be24(pb); /* flags */
7c622eed 1685 edit_count= sc->edit_count = get_be32(pb); /* entries */
e0977c80
BC
1686
1687 for(i=0; i<edit_count; i++){
d435e520 1688 int time;
e0977c80 1689 get_be32(pb); /* Track duration */
d435e520 1690 time = get_be32(pb); /* Media time */
e0977c80 1691 get_be32(pb); /* Media rate */
d435e520
BC
1692 if (time != 0)
1693 av_log(c->fc, AV_LOG_WARNING, "edit list not starting at 0, "
1694 "a/v desync might occur, patch welcome\n");
e0977c80 1695 }
7c622eed 1696 dprintf(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, sc->edit_count);
e0977c80 1697 return 0;
baf25c9d
GC
1698}
1699
6cea494e 1700static const MOVParseTableEntry mov_default_parse_table[] = {
d4fdba0d 1701{ MKTAG('a','v','s','s'), mov_read_extradata },
1c126b4f
BC
1702{ MKTAG('c','o','6','4'), mov_read_stco },
1703{ MKTAG('c','t','t','s'), mov_read_ctts }, /* composition time to sample */
1704{ MKTAG('d','i','n','f'), mov_read_default },
1705{ MKTAG('d','r','e','f'), mov_read_dref },
1706{ MKTAG('e','d','t','s'), mov_read_default },
1707{ MKTAG('e','l','s','t'), mov_read_elst },
1708{ MKTAG('e','n','d','a'), mov_read_enda },
1709{ MKTAG('f','i','e','l'), mov_read_extradata },
1710{ MKTAG('f','t','y','p'), mov_read_ftyp },
1711{ MKTAG('g','l','b','l'), mov_read_glbl },
1712{ MKTAG('h','d','l','r'), mov_read_hdlr },
1713{ MKTAG('j','p','2','h'), mov_read_extradata },
1714{ MKTAG('m','d','a','t'), mov_read_mdat },
1715{ MKTAG('m','d','h','d'), mov_read_mdhd },
1716{ MKTAG('m','d','i','a'), mov_read_default },
1717{ MKTAG('m','i','n','f'), mov_read_default },
1718{ MKTAG('m','o','o','f'), mov_read_moof },
1719{ MKTAG('m','o','o','v'), mov_read_moov },
1720{ MKTAG('m','v','e','x'), mov_read_default },
1721{ MKTAG('m','v','h','d'), mov_read_mvhd },
1722{ MKTAG('S','M','I',' '), mov_read_smi }, /* Sorenson extension ??? */
1723{ MKTAG('a','l','a','c'), mov_read_extradata }, /* alac specific atom */
1724{ MKTAG('a','v','c','C'), mov_read_glbl },
1725{ MKTAG('s','t','b','l'), mov_read_default },
1726{ MKTAG('s','t','c','o'), mov_read_stco },
1727{ MKTAG('s','t','s','c'), mov_read_stsc },
1728{ MKTAG('s','t','s','d'), mov_read_stsd }, /* sample description */
1729{ MKTAG('s','t','s','s'), mov_read_stss }, /* sync sample */
1730{ MKTAG('s','t','s','z'), mov_read_stsz }, /* sample size */
1731{ MKTAG('s','t','t','s'), mov_read_stts },
1732{ MKTAG('t','k','h','d'), mov_read_tkhd }, /* track header */
1733{ MKTAG('t','f','h','d'), mov_read_tfhd }, /* track fragment header */
1734{ MKTAG('t','r','a','k'), mov_read_trak },
1735{ MKTAG('t','r','a','f'), mov_read_default },
1736{ MKTAG('t','r','e','x'), mov_read_trex },
1737{ MKTAG('t','r','u','n'), mov_read_trun },
1738{ MKTAG('u','d','t','a'), mov_read_udta },
1739{ MKTAG('w','a','v','e'), mov_read_wave },
1740{ MKTAG('e','s','d','s'), mov_read_esds },
1741{ MKTAG('w','i','d','e'), mov_read_wide }, /* place holder */
1742{ MKTAG('c','m','o','v'), mov_read_cmov },
bcfe2ba0 1743{ 0, NULL }
6cea494e
ZK
1744};
1745
c9a65ca8
FB
1746static int mov_probe(AVProbeData *p)
1747{
0e7eed09
FB
1748 unsigned int offset;
1749 uint32_t tag;
2497479f 1750 int score = 0;
3ffe3793 1751
c9a65ca8 1752 /* check file header */
0e7eed09
FB
1753 offset = 0;
1754 for(;;) {
1755 /* ignore invalid offset */
1756 if ((offset + 8) > (unsigned int)p->buf_size)
2497479f 1757 return score;
fead30d4 1758 tag = AV_RL32(p->buf + offset + 4);
0e7eed09 1759 switch(tag) {
2497479f 1760 /* check for obvious tags */
1c126b4f
BC
1761 case MKTAG('j','P',' ',' '): /* jpeg 2000 signature */
1762 case MKTAG('m','o','o','v'):
1763 case MKTAG('m','d','a','t'):
1764 case MKTAG('p','n','o','t'): /* detect movs with preview pics like ew.mov and april.mov */
1765 case MKTAG('u','d','t','a'): /* Packet Video PVAuthor adds this and a lot of more junk */
40e7aaa3 1766 case MKTAG('f','t','y','p'):
3ffe3793 1767 return AVPROBE_SCORE_MAX;
2497479f 1768 /* those are more common words, so rate then a bit less */
1c126b4f
BC
1769 case MKTAG('e','d','i','w'): /* xdcam files have reverted first tags */
1770 case MKTAG('w','i','d','e'):
1771 case MKTAG('f','r','e','e'):
1772 case MKTAG('j','u','n','k'):
1773 case MKTAG('p','i','c','t'):
2497479f 1774 return AVPROBE_SCORE_MAX - 5;
5469b788 1775 case MKTAG(0x82,0x82,0x7f,0x7d):
1c126b4f
BC
1776 case MKTAG('s','k','i','p'):
1777 case MKTAG('u','u','i','d'):
1778 case MKTAG('p','r','f','l'):
fead30d4 1779 offset = AV_RB32(p->buf+offset) + offset;
2497479f
FR
1780 /* if we only find those cause probedata is too small at least rate them */
1781 score = AVPROBE_SCORE_MAX - 50;
0e7eed09
FB
1782 break;
1783 default:
1784 /* unrecognized tag */
2497479f 1785 return score;
0e7eed09 1786 }
3ffe3793 1787 }
2497479f 1788 return score;
c9a65ca8
FB
1789}
1790
a266644f 1791static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
6cea494e 1792{
e4141433 1793 MOVContext *mov = s->priv_data;
899681cd 1794 ByteIOContext *pb = s->pb;
f9900374 1795 int err;
5ca1d879 1796 MOV_atom_t atom = { 0, 0, 0 };
6cea494e 1797
6cea494e 1798 mov->fc = s;
117a9190
BC
1799 /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
1800 if(!url_is_streamed(pb))
bb270c08 1801 atom.size = url_fsize(pb);
6cea494e 1802 else
fa22ca22 1803 atom.size = INT64_MAX;
6cea494e 1804
6cea494e 1805 /* check MOV header */
612b5cbb
BC
1806 if ((err = mov_read_default(mov, pb, atom)) < 0) {
1807 av_log(s, AV_LOG_ERROR, "error reading header: %d\n", err);
1808 return err;
1809 }
1810 if (!mov->found_moov) {
1811 av_log(s, AV_LOG_ERROR, "moov atom not found\n");
bb270c08 1812 return -1;
6cea494e 1813 }
0265fe81 1814 dprintf(mov->fc, "on_parse_exit_offset=%lld\n", url_ftell(pb));
4e5ef14f 1815
6cea494e
ZK
1816 return 0;
1817}
1818
a266644f 1819static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
6cea494e 1820{
b72708f8
BC
1821 MOVContext *mov = s->priv_data;
1822 MOVStreamContext *sc = 0;
1823 AVIndexEntry *sample = 0;
86d8602f 1824 int64_t best_dts = INT64_MAX;
b72708f8 1825 int i;
433aeb62 1826 retry:
11f16b66 1827 for (i = 0; i < s->nb_streams; i++) {
7c622eed
BC
1828 AVStream *st = s->streams[i];
1829 MOVStreamContext *msc = st->priv_data;
221e21b7 1830 if (st->discard != AVDISCARD_ALL && msc->pb && msc->current_sample < msc->sample_count) {
7c622eed 1831 AVIndexEntry *current_sample = &st->index_entries[msc->current_sample];
29c90869
BC
1832 int64_t dts = av_rescale(current_sample->timestamp * (int64_t)msc->time_rate,
1833 AV_TIME_BASE, msc->time_scale);
1c02d96f 1834 dprintf(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
687f35f3
BC
1835 if (!sample || (url_is_streamed(s->pb) && current_sample->pos < sample->pos) ||
1836 (!url_is_streamed(s->pb) &&
221e21b7 1837 ((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb &&
687f35f3 1838 ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
221e21b7 1839 (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) {
b72708f8
BC
1840 sample = current_sample;
1841 best_dts = dts;
1842 sc = msc;
86d8602f 1843 }
6cea494e 1844 }
6cea494e 1845 }
433aeb62
BC
1846 if (!sample) {
1847 mov->found_mdat = 0;
1848 if (!url_is_streamed(s->pb) ||
1849 mov_read_default(mov, s->pb, (MOV_atom_t){ 0, 0, INT64_MAX }) < 0 ||
1850 url_feof(s->pb))
1851 return -1;
1852 dprintf(s, "read fragments, offset 0x%llx\n", url_ftell(s->pb));
1853 goto retry;
1854 }
b72708f8
BC
1855 /* must be done just before reading, to avoid infinite loop on sample */
1856 sc->current_sample++;
221e21b7 1857 if (url_fseek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
29c90869
BC
1858 av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
1859 sc->ffindex, sample->pos);
bb270c08 1860 return -1;
6cea494e 1861 }
221e21b7 1862 av_get_packet(sc->pb, pkt, sample->size);
312954f0 1863#ifdef CONFIG_DV_DEMUXER
56ea717b
BC
1864 if (mov->dv_demux && sc->dv_audio_container) {
1865 dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size);
1866 av_free(pkt->data);
300aa2b0
BC
1867 pkt->size = 0;
1868 if (dv_get_packet(mov->dv_demux, pkt) < 0)
1869 return -1;
56ea717b 1870 }
312954f0 1871#endif
b72708f8
BC
1872 pkt->stream_index = sc->ffindex;
1873 pkt->dts = sample->timestamp;
1874 if (sc->ctts_data) {
1875 assert(sc->ctts_data[sc->sample_to_ctime_index].duration % sc->time_rate == 0);
1876 pkt->pts = pkt->dts + sc->ctts_data[sc->sample_to_ctime_index].duration / sc->time_rate;
1877 /* update ctts context */
1878 sc->sample_to_ctime_sample++;
29c90869
BC
1879 if (sc->sample_to_ctime_index < sc->ctts_count &&
1880 sc->ctts_data[sc->sample_to_ctime_index].count == sc->sample_to_ctime_sample) {
b72708f8
BC
1881 sc->sample_to_ctime_index++;
1882 sc->sample_to_ctime_sample = 0;
b565ea09 1883 }
0c5f76f7
BC
1884 if (sc->wrong_dts)
1885 pkt->dts = AV_NOPTS_VALUE;
b72708f8 1886 } else {
e8430214
HG
1887 AVStream *st = s->streams[sc->ffindex];
1888 int64_t next_dts = (sc->current_sample < sc->sample_count) ?
1889 st->index_entries[sc->current_sample].timestamp : st->duration;
1890 pkt->duration = next_dts - pkt->dts;
b72708f8 1891 pkt->pts = pkt->dts;
b565ea09 1892 }
b72708f8
BC
1893 pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? PKT_FLAG_KEY : 0;
1894 pkt->pos = sample->pos;
29c90869
BC
1895 dprintf(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n",
1896 pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
b72708f8
BC
1897 return 0;
1898}
3ffe3793 1899
b72708f8
BC
1900static int mov_seek_stream(AVStream *st, int64_t timestamp, int flags)
1901{
1902 MOVStreamContext *sc = st->priv_data;
1903 int sample, time_sample;
1904 int i;
115329f1 1905
b72708f8 1906 sample = av_index_search_timestamp(st, timestamp, flags);
318c5e05 1907 dprintf(st->codec, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
b72708f8
BC
1908 if (sample < 0) /* not sure what to do */
1909 return -1;
1910 sc->current_sample = sample;
1c02d96f 1911 dprintf(st->codec, "stream %d, found sample %d\n", st->index, sc->current_sample);
b72708f8
BC
1912 /* adjust ctts index */
1913 if (sc->ctts_data) {
1914 time_sample = 0;
1915 for (i = 0; i < sc->ctts_count; i++) {
54a5c719
BC
1916 int next = time_sample + sc->ctts_data[i].count;
1917 if (next > sc->current_sample) {
b72708f8 1918 sc->sample_to_ctime_index = i;
54a5c719 1919 sc->sample_to_ctime_sample = sc->current_sample - time_sample;
b72708f8 1920 break;
115329f1 1921 }
54a5c719 1922 time_sample = next;
247d56f5 1923 }
247d56f5 1924 }
b72708f8 1925 return sample;
6cea494e
ZK
1926}
1927
961e0ccd 1928static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
baf25c9d 1929{
b72708f8
BC
1930 AVStream *st;
1931 int64_t seek_timestamp, timestamp;
1932 int sample;
1933 int i;
baf25c9d 1934
b72708f8 1935 if (stream_index >= s->nb_streams)
baf25c9d 1936 return -1;
baf25c9d 1937
b72708f8
BC
1938 st = s->streams[stream_index];
1939 sample = mov_seek_stream(st, sample_time, flags);
1940 if (sample < 0)
baf25c9d 1941 return -1;
baf25c9d 1942
b72708f8
BC
1943 /* adjust seek timestamp to found sample timestamp */
1944 seek_timestamp = st->index_entries[sample].timestamp;
baf25c9d 1945
b72708f8
BC
1946 for (i = 0; i < s->nb_streams; i++) {
1947 st = s->streams[i];
1948 if (stream_index == i || st->discard == AVDISCARD_ALL)
1949 continue;
baf25c9d 1950
b72708f8
BC
1951 timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
1952 mov_seek_stream(st, timestamp, flags);
115329f1 1953 }
baf25c9d
GC
1954 return 0;
1955}
baf25c9d 1956
a266644f 1957static int mov_read_close(AVFormatContext *s)
6cea494e 1958{
221e21b7 1959 int i, j;
e4141433 1960 MOVContext *mov = s->priv_data;
11f16b66 1961 for(i=0; i<s->nb_streams; i++) {
7c622eed
BC
1962 MOVStreamContext *sc = s->streams[i]->priv_data;
1963 av_freep(&sc->ctts_data);
221e21b7
BC
1964 for (j=0; j<sc->drefs_count; j++)
1965 av_freep(&sc->drefs[j].path);
1966 av_freep(&sc->drefs);
1967 if (sc->pb && sc->pb != s->pb)
1968 url_fclose(sc->pb);
4440b118 1969 }
b60c0454
BC
1970 if(mov->dv_demux){
1971 for(i=0; i<mov->dv_fctx->nb_streams; i++){
1972 av_freep(&mov->dv_fctx->streams[i]->codec);
1973 av_freep(&mov->dv_fctx->streams[i]);
1974 }
1975 av_freep(&mov->dv_fctx);
1976 av_freep(&mov->dv_demux);
1977 }
61aedb0f 1978 av_freep(&mov->trex_data);
6cea494e
ZK
1979 return 0;
1980}
1981
ff70e601 1982AVInputFormat mov_demuxer = {
fc5188f3 1983 "mov,mp4,m4a,3gp,3g2,mj2",
bde15e74 1984 NULL_IF_CONFIG_SMALL("QuickTime/MPEG-4/Motion JPEG 2000 format"),
c9a65ca8
FB
1985 sizeof(MOVContext),
1986 mov_probe,
6cea494e
ZK
1987 mov_read_header,
1988 mov_read_packet,
1989 mov_read_close,
baf25c9d 1990 mov_read_seek,
6cea494e 1991};