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ffmpeg / libavformat / mov.c @ 7e1720de

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1
/*
2
 * MOV demuxer
3
 * Copyright (c) 2001 Fabrice Bellard.
4
 *
5
 * This file is part of FFmpeg.
6
 *
7
 * FFmpeg is free software; you can redistribute it and/or
8
 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
10
 * version 2.1 of the License, or (at your option) any later version.
11
 *
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 * FFmpeg is distributed in the hope that it will be useful,
13
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15
 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with FFmpeg; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
21

    
22
#include <limits.h>
23

    
24
//#define DEBUG
25

    
26
#include "avformat.h"
27
#include "riff.h"
28
#include "isom.h"
29
#include "dv.h"
30

    
31
#ifdef CONFIG_ZLIB
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#include <zlib.h>
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#endif
34

    
35
/*
36
 * First version by Francois Revol revol@free.fr
37
 * Seek function by Gael Chardon gael.dev@4now.net
38
 *
39
 * Features and limitations:
40
 * - reads most of the QT files I have (at least the structure),
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 *   Sample QuickTime files with mp3 audio can be found at: http://www.3ivx.com/showcase.html
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 * - the code is quite ugly... maybe I won't do it recursive next time :-)
43
 *
44
 * Funny I didn't know about http://sourceforge.net/projects/qt-ffmpeg/
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 * when coding this :) (it's a writer anyway)
46
 *
47
 * Reference documents:
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 * http://www.geocities.com/xhelmboyx/quicktime/formats/qtm-layout.txt
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 * Apple:
50
 *  http://developer.apple.com/documentation/QuickTime/QTFF/
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 *  http://developer.apple.com/documentation/QuickTime/QTFF/qtff.pdf
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 * QuickTime is a trademark of Apple (AFAIK :))
53
 */
54

    
55
#include "qtpalette.h"
56

    
57

    
58
#undef NDEBUG
59
#include <assert.h>
60

    
61
/* the QuickTime file format is quite convoluted...
62
 * it has lots of index tables, each indexing something in another one...
63
 * Here we just use what is needed to read the chunks
64
 */
65

    
66
typedef struct {
67
    int first;
68
    int count;
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    int id;
70
} MOV_stsc_t;
71

    
72
typedef struct {
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    uint32_t type;
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    int64_t offset;
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    int64_t size; /* total size (excluding the size and type fields) */
76
} MOV_atom_t;
77

    
78
typedef struct {
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    offset_t offset;
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    int64_t size;
81
} MOV_mdat_t;
82

    
83
struct MOVParseTableEntry;
84

    
85
typedef struct MOVStreamContext {
86
    int ffindex; /* the ffmpeg stream id */
87
    int next_chunk;
88
    unsigned int chunk_count;
89
    int64_t *chunk_offsets;
90
    unsigned int stts_count;
91
    MOV_stts_t *stts_data;
92
    unsigned int ctts_count;
93
    MOV_stts_t *ctts_data;
94
    unsigned int edit_count; /* number of 'edit' (elst atom) */
95
    unsigned int sample_to_chunk_sz;
96
    MOV_stsc_t *sample_to_chunk;
97
    int sample_to_ctime_index;
98
    int sample_to_ctime_sample;
99
    unsigned int sample_size;
100
    unsigned int sample_count;
101
    int *sample_sizes;
102
    unsigned int keyframe_count;
103
    int *keyframes;
104
    int time_scale;
105
    int time_rate;
106
    int current_sample;
107
    unsigned int bytes_per_frame;
108
    unsigned int samples_per_frame;
109
    int dv_audio_container;
110
} MOVStreamContext;
111

    
112
typedef struct MOVContext {
113
    AVFormatContext *fc;
114
    int time_scale;
115
    int64_t duration; /* duration of the longest track */
116
    int found_moov; /* when both 'moov' and 'mdat' sections has been found */
117
    int found_mdat; /* we suppose we have enough data to read the file */
118
    int64_t mdat_offset;
119
    int total_streams;
120
    MOVStreamContext *streams[MAX_STREAMS];
121

    
122
    const struct MOVParseTableEntry *parse_table; /* could be eventually used to change the table */
123
    /* NOTE: for recursion save to/ restore from local variable! */
124

    
125
    AVPaletteControl palette_control;
126
    MOV_mdat_t *mdat_list;
127
    int mdat_count;
128
    DVDemuxContext *dv_demux;
129
    AVFormatContext *dv_fctx;
130
    int isom; /* 1 if file is ISO Media (mp4/3gp) */
131
} MOVContext;
132

    
133

    
134
/* XXX: it's the first time I make a recursive parser I think... sorry if it's ugly :P */
135

    
136
/* those functions parse an atom */
137
/* return code:
138
 1: found what I wanted, exit
139
 0: continue to parse next atom
140
 -1: error occured, exit
141
 */
142
typedef int (*mov_parse_function)(MOVContext *ctx, ByteIOContext *pb, MOV_atom_t atom);
143

    
144
/* links atom IDs to parse functions */
145
typedef struct MOVParseTableEntry {
146
    uint32_t type;
147
    mov_parse_function func;
148
} MOVParseTableEntry;
149

    
150
static int mov_read_default(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
151
{
152
    int64_t total_size = 0;
153
    MOV_atom_t a;
154
    int i;
155
    int err = 0;
156

    
157
    a.offset = atom.offset;
158

    
159
    if (atom.size < 0)
160
        atom.size = INT64_MAX;
161
    while(((total_size + 8) < atom.size) && !url_feof(pb) && !err) {
162
        a.size = atom.size;
163
        a.type=0L;
164
        if(atom.size >= 8) {
165
            a.size = get_be32(pb);
166
            a.type = get_le32(pb);
167
        }
168
        total_size += 8;
169
        a.offset += 8;
170
        dprintf(c->fc, "type: %08x  %.4s  sz: %"PRIx64"  %"PRIx64"   %"PRIx64"\n", a.type, (char*)&a.type, a.size, atom.size, total_size);
171
        if (a.size == 1) { /* 64 bit extended size */
172
            a.size = get_be64(pb) - 8;
173
            a.offset += 8;
174
            total_size += 8;
175
        }
176
        if (a.size == 0) {
177
            a.size = atom.size - total_size;
178
            if (a.size <= 8)
179
                break;
180
        }
181
        a.size -= 8;
182
        if(a.size < 0)
183
            break;
184
        a.size = FFMIN(a.size, atom.size - total_size);
185

    
186
        for (i = 0; c->parse_table[i].type != 0L
187
             && c->parse_table[i].type != a.type; i++)
188
            /* empty */;
189

    
190
        if (c->parse_table[i].type == 0) { /* skip leaf atoms data */
191
            url_fskip(pb, a.size);
192
        } else {
193
            offset_t start_pos = url_ftell(pb);
194
            int64_t left;
195
            err = (c->parse_table[i].func)(c, pb, a);
196
            left = a.size - url_ftell(pb) + start_pos;
197
            if (left > 0) /* skip garbage at atom end */
198
                url_fskip(pb, left);
199
        }
200

    
201
        a.offset += a.size;
202
        total_size += a.size;
203
    }
204

    
205
    if (!err && total_size < atom.size && atom.size < 0x7ffff) {
206
        url_fskip(pb, atom.size - total_size);
207
    }
208

    
209
    return err;
210
}
211

    
212
static int mov_read_hdlr(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
213
{
214
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
215
    uint32_t type;
216
    uint32_t ctype;
217

    
218
    get_byte(pb); /* version */
219
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
220

    
221
    /* component type */
222
    ctype = get_le32(pb);
223
    type = get_le32(pb); /* component subtype */
224

    
225
    dprintf(c->fc, "ctype= %c%c%c%c (0x%08x)\n", *((char *)&ctype), ((char *)&ctype)[1], ((char *)&ctype)[2], ((char *)&ctype)[3], (int) ctype);
226
    dprintf(c->fc, "stype= %c%c%c%c\n", *((char *)&type), ((char *)&type)[1], ((char *)&type)[2], ((char *)&type)[3]);
227
    if(!ctype)
228
        c->isom = 1;
229
    if(type == MKTAG('v', 'i', 'd', 'e'))
230
        st->codec->codec_type = CODEC_TYPE_VIDEO;
231
    else if(type == MKTAG('s', 'o', 'u', 'n'))
232
        st->codec->codec_type = CODEC_TYPE_AUDIO;
233
    else if(type == MKTAG('m', '1', 'a', ' '))
234
        st->codec->codec_id = CODEC_ID_MP2;
235
    else if(type == MKTAG('s', 'u', 'b', 'p')) {
236
        st->codec->codec_type = CODEC_TYPE_SUBTITLE;
237
        st->codec->codec_id = CODEC_ID_DVD_SUBTITLE;
238
    }
239
    get_be32(pb); /* component  manufacture */
240
    get_be32(pb); /* component flags */
241
    get_be32(pb); /* component flags mask */
242

    
243
    if(atom.size <= 24)
244
        return 0; /* nothing left to read */
245

    
246
    url_fskip(pb, atom.size - (url_ftell(pb) - atom.offset));
247
    return 0;
248
}
249

    
250
static int mp4_read_descr_len(ByteIOContext *pb)
251
{
252
    int len = 0;
253
    int count = 4;
254
    while (count--) {
255
        int c = get_byte(pb);
256
        len = (len << 7) | (c & 0x7f);
257
        if (!(c & 0x80))
258
            break;
259
    }
260
    return len;
261
}
262

    
263
static int mp4_read_descr(MOVContext *c, ByteIOContext *pb, int *tag)
264
{
265
    int len;
266
    *tag = get_byte(pb);
267
    len = mp4_read_descr_len(pb);
268
    dprintf(c->fc, "MPEG4 description: tag=0x%02x len=%d\n", *tag, len);
269
    return len;
270
}
271

    
272
#define MP4ESDescrTag                   0x03
273
#define MP4DecConfigDescrTag            0x04
274
#define MP4DecSpecificDescrTag          0x05
275

    
276
static int mov_read_esds(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
277
{
278
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
279
    int tag, len;
280

    
281
    get_be32(pb); /* version + flags */
282
    len = mp4_read_descr(c, pb, &tag);
283
    if (tag == MP4ESDescrTag) {
284
        get_be16(pb); /* ID */
285
        get_byte(pb); /* priority */
286
    } else
287
        get_be16(pb); /* ID */
288

    
289
    len = mp4_read_descr(c, pb, &tag);
290
    if (tag == MP4DecConfigDescrTag) {
291
        int object_type_id = get_byte(pb);
292
        get_byte(pb); /* stream type */
293
        get_be24(pb); /* buffer size db */
294
        get_be32(pb); /* max bitrate */
295
        get_be32(pb); /* avg bitrate */
296

    
297
        st->codec->codec_id= codec_get_id(ff_mp4_obj_type, object_type_id);
298
        dprintf(c->fc, "esds object type id %d\n", object_type_id);
299
        len = mp4_read_descr(c, pb, &tag);
300
        if (tag == MP4DecSpecificDescrTag) {
301
            dprintf(c->fc, "Specific MPEG4 header len=%d\n", len);
302
            st->codec->extradata = av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
303
            if (st->codec->extradata) {
304
                get_buffer(pb, st->codec->extradata, len);
305
                st->codec->extradata_size = len;
306
                /* from mplayer */
307
                if ((*st->codec->extradata >> 3) == 29) {
308
                    st->codec->codec_id = CODEC_ID_MP3ON4;
309
                }
310
            }
311
        }
312
    }
313
    return 0;
314
}
315

    
316
/* this atom contains actual media data */
317
static int mov_read_mdat(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
318
{
319
    if(atom.size == 0) /* wrong one (MP4) */
320
        return 0;
321
    c->mdat_list = av_realloc(c->mdat_list, (c->mdat_count + 1) * sizeof(*c->mdat_list));
322
    c->mdat_list[c->mdat_count].offset = atom.offset;
323
    c->mdat_list[c->mdat_count].size = atom.size;
324
    c->mdat_count++;
325
    c->found_mdat=1;
326
    c->mdat_offset = atom.offset;
327
    if(c->found_moov)
328
        return 1; /* found both, just go */
329
    url_fskip(pb, atom.size);
330
    return 0; /* now go for moov */
331
}
332

    
333
static int mov_read_ftyp(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
334
{
335
    uint32_t type = get_le32(pb);
336

    
337
    if (type != MKTAG('q','t',' ',' '))
338
        c->isom = 1;
339
    av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
340
    get_be32(pb); /* minor version */
341
    url_fskip(pb, atom.size - 8);
342
    return 0;
343
}
344

    
345
/* this atom should contain all header atoms */
346
static int mov_read_moov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
347
{
348
    int err;
349

    
350
    err = mov_read_default(c, pb, atom);
351
    /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
352
    /* so we don't parse the whole file if over a network */
353
    c->found_moov=1;
354
    if(c->found_mdat)
355
        return 1; /* found both, just go */
356
    return 0; /* now go for mdat */
357
}
358

    
359

    
360
static int mov_read_mdhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
361
{
362
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
363
    MOVStreamContext *sc = st->priv_data;
364
    int version = get_byte(pb);
365
    int lang;
366

    
367
    if (version > 1)
368
        return 1; /* unsupported */
369

    
370
    get_byte(pb); get_byte(pb);
371
    get_byte(pb); /* flags */
372

    
373
    if (version == 1) {
374
        get_be64(pb);
375
        get_be64(pb);
376
    } else {
377
        get_be32(pb); /* creation time */
378
        get_be32(pb); /* modification time */
379
    }
380

    
381
    sc->time_scale = get_be32(pb);
382
    st->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
383

    
384
    lang = get_be16(pb); /* language */
385
    ff_mov_lang_to_iso639(lang, st->language);
386
    get_be16(pb); /* quality */
387

    
388
    return 0;
389
}
390

    
391
static int mov_read_mvhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
392
{
393
    int version = get_byte(pb); /* version */
394
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
395

    
396
    if (version == 1) {
397
        get_be64(pb);
398
        get_be64(pb);
399
    } else {
400
        get_be32(pb); /* creation time */
401
        get_be32(pb); /* modification time */
402
    }
403
    c->time_scale = get_be32(pb); /* time scale */
404

    
405
    dprintf(c->fc, "time scale = %i\n", c->time_scale);
406

    
407
    c->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
408
    get_be32(pb); /* preferred scale */
409

    
410
    get_be16(pb); /* preferred volume */
411

    
412
    url_fskip(pb, 10); /* reserved */
413

    
414
    url_fskip(pb, 36); /* display matrix */
415

    
416
    get_be32(pb); /* preview time */
417
    get_be32(pb); /* preview duration */
418
    get_be32(pb); /* poster time */
419
    get_be32(pb); /* selection time */
420
    get_be32(pb); /* selection duration */
421
    get_be32(pb); /* current time */
422
    get_be32(pb); /* next track ID */
423

    
424
    return 0;
425
}
426

    
427
static int mov_read_smi(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
428
{
429
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
430

    
431
    if((uint64_t)atom.size > (1<<30))
432
        return -1;
433

    
434
    // currently SVQ3 decoder expect full STSD header - so let's fake it
435
    // this should be fixed and just SMI header should be passed
436
    av_free(st->codec->extradata);
437
    st->codec->extradata_size = 0x5a + atom.size;
438
    st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
439

    
440
    if (st->codec->extradata) {
441
        memcpy(st->codec->extradata, "SVQ3", 4); // fake
442
        get_buffer(pb, st->codec->extradata + 0x5a, atom.size);
443
        dprintf(c->fc, "Reading SMI %"PRId64"  %s\n", atom.size, st->codec->extradata + 0x5a);
444
    } else
445
        url_fskip(pb, atom.size);
446

    
447
    return 0;
448
}
449

    
450
static int mov_read_enda(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
451
{
452
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
453
    int little_endian = get_be16(pb);
454

    
455
    if (little_endian) {
456
        switch (st->codec->codec_id) {
457
        case CODEC_ID_PCM_S24BE:
458
            st->codec->codec_id = CODEC_ID_PCM_S24LE;
459
            break;
460
        case CODEC_ID_PCM_S32BE:
461
            st->codec->codec_id = CODEC_ID_PCM_S32LE;
462
            break;
463
        default:
464
            break;
465
        }
466
    }
467
    return 0;
468
}
469

    
470
/* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
471
static int mov_read_extradata(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
472
{
473
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
474
    uint64_t size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
475
    uint8_t *buf;
476
    if(size > INT_MAX || (uint64_t)atom.size > INT_MAX)
477
        return -1;
478
    buf= av_realloc(st->codec->extradata, size);
479
    if(!buf)
480
        return -1;
481
    st->codec->extradata= buf;
482
    buf+= st->codec->extradata_size;
483
    st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE;
484
    AV_WB32(       buf    , atom.size + 8);
485
    AV_WL32(       buf + 4, atom.type);
486
    get_buffer(pb, buf + 8, atom.size);
487
    return 0;
488
}
489

    
490
static int mov_read_wave(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
491
{
492
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
493

    
494
    if((uint64_t)atom.size > (1<<30))
495
        return -1;
496

    
497
    if (st->codec->codec_id == CODEC_ID_QDM2) {
498
        // pass all frma atom to codec, needed at least for QDM2
499
        av_free(st->codec->extradata);
500
        st->codec->extradata_size = atom.size;
501
        st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
502

    
503
        if (st->codec->extradata) {
504
            get_buffer(pb, st->codec->extradata, atom.size);
505
        } else
506
            url_fskip(pb, atom.size);
507
    } else if (atom.size > 8) { /* to read frma, esds atoms */
508
        mov_read_default(c, pb, atom);
509
    } else
510
        url_fskip(pb, atom.size);
511
    return 0;
512
}
513

    
514
static int mov_read_avcC(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
515
{
516
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
517

    
518
    if((uint64_t)atom.size > (1<<30))
519
        return -1;
520

    
521
    av_free(st->codec->extradata);
522

    
523
    st->codec->extradata_size = atom.size;
524
    st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
525

    
526
    if (st->codec->extradata) {
527
        get_buffer(pb, st->codec->extradata, atom.size);
528
    } else
529
        url_fskip(pb, atom.size);
530

    
531
    return 0;
532
}
533

    
534
static int mov_read_stco(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
535
{
536
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
537
    MOVStreamContext *sc = st->priv_data;
538
    unsigned int i, entries;
539

    
540
    get_byte(pb); /* version */
541
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
542

    
543
    entries = get_be32(pb);
544

    
545
    if(entries >= UINT_MAX/sizeof(int64_t))
546
        return -1;
547

    
548
    sc->chunk_count = entries;
549
    sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
550
    if (!sc->chunk_offsets)
551
        return -1;
552
    if (atom.type == MKTAG('s', 't', 'c', 'o')) {
553
        for(i=0; i<entries; i++) {
554
            sc->chunk_offsets[i] = get_be32(pb);
555
        }
556
    } else if (atom.type == MKTAG('c', 'o', '6', '4')) {
557
        for(i=0; i<entries; i++) {
558
            sc->chunk_offsets[i] = get_be64(pb);
559
        }
560
    } else
561
        return -1;
562

    
563
    return 0;
564
}
565

    
566
static int mov_read_stsd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
567
{
568
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
569
    MOVStreamContext *sc = st->priv_data;
570
    int entries, frames_per_sample;
571
    uint32_t format;
572
    uint8_t codec_name[32];
573

    
574
    /* for palette traversal */
575
    int color_depth;
576
    int color_start;
577
    int color_count;
578
    int color_end;
579
    int color_index;
580
    int color_dec;
581
    int color_greyscale;
582
    const uint8_t *color_table;
583
    int j;
584
    unsigned char r, g, b;
585

    
586
    get_byte(pb); /* version */
587
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
588

    
589
    entries = get_be32(pb);
590

    
591
    while(entries--) { //Parsing Sample description table
592
        enum CodecID id;
593
        MOV_atom_t a = { 0, 0, 0 };
594
        offset_t start_pos = url_ftell(pb);
595
        int size = get_be32(pb); /* size */
596
        format = get_le32(pb); /* data format */
597

    
598
        get_be32(pb); /* reserved */
599
        get_be16(pb); /* reserved */
600
        get_be16(pb); /* index */
601

    
602
        if (st->codec->codec_tag) {
603
            /* multiple fourcc, just skip for now */
604
            url_fskip(pb, size - (url_ftell(pb) - start_pos));
605
            continue;
606
        }
607

    
608
        st->codec->codec_tag = format;
609
        id = codec_get_id(codec_movaudio_tags, format);
610
        if (id<=0 && (format&0xFFFF) == 'm' + ('s'<<8))
611
            id = codec_get_id(codec_wav_tags, bswap_32(format)&0xFFFF);
612

    
613
        if (st->codec->codec_type != CODEC_TYPE_VIDEO && id > 0) {
614
            st->codec->codec_type = CODEC_TYPE_AUDIO;
615
        } else if (st->codec->codec_type != CODEC_TYPE_AUDIO && /* do not overwrite codec type */
616
                   format && format != MKTAG('m', 'p', '4', 's')) { /* skip old asf mpeg4 tag */
617
            id = codec_get_id(codec_movvideo_tags, format);
618
            if (id <= 0)
619
                id = codec_get_id(codec_bmp_tags, format);
620
            if (id > 0)
621
                st->codec->codec_type = CODEC_TYPE_VIDEO;
622
        }
623

    
624
        dprintf(c->fc, "size=%d 4CC= %c%c%c%c codec_type=%d\n",
625
                size,
626
                (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff, (format >> 24) & 0xff,
627
                st->codec->codec_type);
628

    
629
        if(st->codec->codec_type==CODEC_TYPE_VIDEO) {
630
            st->codec->codec_id = id;
631
            get_be16(pb); /* version */
632
            get_be16(pb); /* revision level */
633
            get_be32(pb); /* vendor */
634
            get_be32(pb); /* temporal quality */
635
            get_be32(pb); /* spatial quality */
636

    
637
            st->codec->width = get_be16(pb); /* width */
638
            st->codec->height = get_be16(pb); /* height */
639

    
640
            get_be32(pb); /* horiz resolution */
641
            get_be32(pb); /* vert resolution */
642
            get_be32(pb); /* data size, always 0 */
643
            frames_per_sample = get_be16(pb); /* frames per samples */
644

    
645
            dprintf(c->fc, "frames/samples = %d\n", frames_per_sample);
646

    
647
            get_buffer(pb, codec_name, 32); /* codec name, pascal string (FIXME: true for mp4?) */
648
            if (codec_name[0] <= 31) {
649
                memcpy(st->codec->codec_name, &codec_name[1],codec_name[0]);
650
                st->codec->codec_name[codec_name[0]] = 0;
651
            }
652

    
653
            st->codec->bits_per_sample = get_be16(pb); /* depth */
654
            st->codec->color_table_id = get_be16(pb); /* colortable id */
655

    
656
            /* figure out the palette situation */
657
            color_depth = st->codec->bits_per_sample & 0x1F;
658
            color_greyscale = st->codec->bits_per_sample & 0x20;
659

    
660
            /* if the depth is 2, 4, or 8 bpp, file is palettized */
661
            if ((color_depth == 2) || (color_depth == 4) ||
662
                (color_depth == 8)) {
663

    
664
                if (color_greyscale) {
665

    
666
                    /* compute the greyscale palette */
667
                    color_count = 1 << color_depth;
668
                    color_index = 255;
669
                    color_dec = 256 / (color_count - 1);
670
                    for (j = 0; j < color_count; j++) {
671
                        r = g = b = color_index;
672
                        c->palette_control.palette[j] =
673
                            (r << 16) | (g << 8) | (b);
674
                        color_index -= color_dec;
675
                        if (color_index < 0)
676
                            color_index = 0;
677
                    }
678

    
679
                } else if (st->codec->color_table_id & 0x08) {
680

    
681
                    /* if flag bit 3 is set, use the default palette */
682
                    color_count = 1 << color_depth;
683
                    if (color_depth == 2)
684
                        color_table = ff_qt_default_palette_4;
685
                    else if (color_depth == 4)
686
                        color_table = ff_qt_default_palette_16;
687
                    else
688
                        color_table = ff_qt_default_palette_256;
689

    
690
                    for (j = 0; j < color_count; j++) {
691
                        r = color_table[j * 4 + 0];
692
                        g = color_table[j * 4 + 1];
693
                        b = color_table[j * 4 + 2];
694
                        c->palette_control.palette[j] =
695
                            (r << 16) | (g << 8) | (b);
696
                    }
697

    
698
                } else {
699

    
700
                    /* load the palette from the file */
701
                    color_start = get_be32(pb);
702
                    color_count = get_be16(pb);
703
                    color_end = get_be16(pb);
704
                    for (j = color_start; j <= color_end; j++) {
705
                        /* each R, G, or B component is 16 bits;
706
                         * only use the top 8 bits; skip alpha bytes
707
                         * up front */
708
                        get_byte(pb);
709
                        get_byte(pb);
710
                        r = get_byte(pb);
711
                        get_byte(pb);
712
                        g = get_byte(pb);
713
                        get_byte(pb);
714
                        b = get_byte(pb);
715
                        get_byte(pb);
716
                        c->palette_control.palette[j] =
717
                            (r << 16) | (g << 8) | (b);
718
                    }
719
                }
720

    
721
                st->codec->palctrl = &c->palette_control;
722
                st->codec->palctrl->palette_changed = 1;
723
            } else
724
                st->codec->palctrl = NULL;
725
        } else if(st->codec->codec_type==CODEC_TYPE_AUDIO) {
726
            int bits_per_sample;
727
            uint16_t version = get_be16(pb);
728

    
729
            st->codec->codec_id = id;
730
            get_be16(pb); /* revision level */
731
            get_be32(pb); /* vendor */
732

    
733
            st->codec->channels = get_be16(pb);             /* channel count */
734
            dprintf(c->fc, "audio channels %d\n", st->codec->channels);
735
            st->codec->bits_per_sample = get_be16(pb);      /* sample size */
736
            /* do we need to force to 16 for AMR ? */
737

    
738
            /* handle specific s8 codec */
739
            get_be16(pb); /* compression id = 0*/
740
            get_be16(pb); /* packet size = 0 */
741

    
742
            st->codec->sample_rate = ((get_be32(pb) >> 16));
743

    
744
            switch (st->codec->codec_id) {
745
            case CODEC_ID_PCM_S8:
746
            case CODEC_ID_PCM_U8:
747
                if (st->codec->bits_per_sample == 16)
748
                    st->codec->codec_id = CODEC_ID_PCM_S16BE;
749
                break;
750
            case CODEC_ID_PCM_S16LE:
751
            case CODEC_ID_PCM_S16BE:
752
                if (st->codec->bits_per_sample == 8)
753
                    st->codec->codec_id = CODEC_ID_PCM_S8;
754
                else if (st->codec->bits_per_sample == 24)
755
                    st->codec->codec_id = CODEC_ID_PCM_S24BE;
756
                break;
757
            default:
758
                break;
759
            }
760

    
761
            //Read QT version 1 fields. In version 0 these do not exist.
762
            dprintf(c->fc, "version =%d, isom =%d\n",version,c->isom);
763
            if(!c->isom) {
764
                if(version==1) {
765
                    sc->samples_per_frame = get_be32(pb);
766
                    get_be32(pb); /* bytes per packet */
767
                    sc->bytes_per_frame = get_be32(pb);
768
                    get_be32(pb); /* bytes per sample */
769
                } else if(version==2) {
770
                    get_be32(pb); /* sizeof struct only */
771
                    st->codec->sample_rate = av_int2dbl(get_be64(pb)); /* float 64 */
772
                    st->codec->channels = get_be32(pb);
773
                    get_be32(pb); /* always 0x7F000000 */
774
                    get_be32(pb); /* bits per channel if sound is uncompressed */
775
                    get_be32(pb); /* lcpm format specific flag */
776
                    get_be32(pb); /* bytes per audio packet if constant */
777
                    get_be32(pb); /* lpcm frames per audio packet if constant */
778
                }
779
            }
780

    
781
            bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
782
            if (bits_per_sample) {
783
                st->codec->bits_per_sample = bits_per_sample;
784
                sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
785
            }
786
        } else {
787
            /* other codec type, just skip (rtp, mp4s, tmcd ...) */
788
            url_fskip(pb, size - (url_ftell(pb) - start_pos));
789
        }
790
        /* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */
791
        a.size = size - (url_ftell(pb) - start_pos);
792
        if (a.size > 8)
793
            mov_read_default(c, pb, a);
794
        else if (a.size > 0)
795
            url_fskip(pb, a.size);
796
    }
797

    
798
    if(st->codec->codec_type==CODEC_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1) {
799
        st->codec->sample_rate= sc->time_scale;
800
    }
801

    
802
    /* special codec parameters handling */
803
    switch (st->codec->codec_id) {
804
#ifdef CONFIG_H261_DECODER
805
    case CODEC_ID_H261:
806
#endif
807
#ifdef CONFIG_H263_DECODER
808
    case CODEC_ID_H263:
809
#endif
810
#ifdef CONFIG_MPEG4_DECODER
811
    case CODEC_ID_MPEG4:
812
#endif
813
        st->codec->width= 0; /* let decoder init width/height */
814
        st->codec->height= 0;
815
        break;
816
#ifdef CONFIG_LIBFAAD
817
    case CODEC_ID_AAC:
818
#endif
819
#ifdef CONFIG_VORBIS_DECODER
820
    case CODEC_ID_VORBIS:
821
#endif
822
    case CODEC_ID_MP3ON4:
823
        st->codec->sample_rate= 0; /* let decoder init parameters properly */
824
        break;
825
#ifdef CONFIG_DV_DEMUXER
826
    case CODEC_ID_DVAUDIO:
827
        c->dv_fctx = av_alloc_format_context();
828
        c->dv_demux = dv_init_demux(c->dv_fctx);
829
        if (!c->dv_demux) {
830
            av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
831
            return -1;
832
        }
833
        sc->dv_audio_container = 1;
834
        st->codec->codec_id = CODEC_ID_PCM_S16LE;
835
        break;
836
#endif
837
    /* no ifdef since parameters are always those */
838
    case CODEC_ID_AMR_WB:
839
        st->codec->sample_rate= 16000;
840
        st->codec->channels= 1; /* really needed */
841
        break;
842
    case CODEC_ID_AMR_NB:
843
        st->codec->sample_rate= 8000;
844
        st->codec->channels= 1; /* really needed */
845
        break;
846
    case CODEC_ID_MP2:
847
    case CODEC_ID_MP3:
848
        st->codec->codec_type = CODEC_TYPE_AUDIO; /* force type after stsd for m1a hdlr */
849
        st->need_parsing = AVSTREAM_PARSE_FULL;
850
        break;
851
    case CODEC_ID_ADPCM_MS:
852
    case CODEC_ID_ADPCM_IMA_WAV:
853
        st->codec->block_align = sc->bytes_per_frame;
854
        break;
855
    default:
856
        break;
857
    }
858

    
859
    return 0;
860
}
861

    
862
static int mov_read_stsc(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
863
{
864
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
865
    MOVStreamContext *sc = st->priv_data;
866
    unsigned int i, entries;
867

    
868
    get_byte(pb); /* version */
869
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
870

    
871
    entries = get_be32(pb);
872

    
873
    if(entries >= UINT_MAX / sizeof(MOV_stsc_t))
874
        return -1;
875

    
876
    dprintf(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
877

    
878
    sc->sample_to_chunk_sz = entries;
879
    sc->sample_to_chunk = av_malloc(entries * sizeof(MOV_stsc_t));
880
    if (!sc->sample_to_chunk)
881
        return -1;
882
    for(i=0; i<entries; i++) {
883
        sc->sample_to_chunk[i].first = get_be32(pb);
884
        sc->sample_to_chunk[i].count = get_be32(pb);
885
        sc->sample_to_chunk[i].id = get_be32(pb);
886
    }
887
    return 0;
888
}
889

    
890
static int mov_read_stss(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
891
{
892
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
893
    MOVStreamContext *sc = st->priv_data;
894
    unsigned int i, entries;
895

    
896
    get_byte(pb); /* version */
897
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
898

    
899
    entries = get_be32(pb);
900

    
901
    if(entries >= UINT_MAX / sizeof(int))
902
        return -1;
903

    
904
    sc->keyframe_count = entries;
905

    
906
    dprintf(c->fc, "keyframe_count = %d\n", sc->keyframe_count);
907

    
908
    sc->keyframes = av_malloc(entries * sizeof(int));
909
    if (!sc->keyframes)
910
        return -1;
911
    for(i=0; i<entries; i++) {
912
        sc->keyframes[i] = get_be32(pb);
913
        //dprintf(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
914
    }
915
    return 0;
916
}
917

    
918
static int mov_read_stsz(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
919
{
920
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
921
    MOVStreamContext *sc = st->priv_data;
922
    unsigned int i, entries, sample_size;
923

    
924
    get_byte(pb); /* version */
925
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
926

    
927
    sample_size = get_be32(pb);
928
    if (!sc->sample_size) /* do not overwrite value computed in stsd */
929
        sc->sample_size = sample_size;
930
    entries = get_be32(pb);
931
    if(entries >= UINT_MAX / sizeof(int))
932
        return -1;
933

    
934
    sc->sample_count = entries;
935
    if (sample_size)
936
        return 0;
937

    
938
    dprintf(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, sc->sample_count);
939

    
940
    sc->sample_sizes = av_malloc(entries * sizeof(int));
941
    if (!sc->sample_sizes)
942
        return -1;
943
    for(i=0; i<entries; i++) {
944
        sc->sample_sizes[i] = get_be32(pb);
945
        dprintf(c->fc, "sample_sizes[]=%d\n", sc->sample_sizes[i]);
946
    }
947
    return 0;
948
}
949

    
950
static int mov_read_stts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
951
{
952
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
953
    MOVStreamContext *sc = st->priv_data;
954
    unsigned int i, entries;
955
    int64_t duration=0;
956
    int64_t total_sample_count=0;
957

    
958
    get_byte(pb); /* version */
959
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
960
    entries = get_be32(pb);
961
    if(entries >= UINT_MAX / sizeof(MOV_stts_t))
962
        return -1;
963

    
964
    sc->stts_count = entries;
965
    sc->stts_data = av_malloc(entries * sizeof(MOV_stts_t));
966

    
967
    dprintf(c->fc, "track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries);
968

    
969
    sc->time_rate=0;
970

    
971
    for(i=0; i<entries; i++) {
972
        int sample_duration;
973
        int sample_count;
974

    
975
        sample_count=get_be32(pb);
976
        sample_duration = get_be32(pb);
977
        sc->stts_data[i].count= sample_count;
978
        sc->stts_data[i].duration= sample_duration;
979

    
980
        sc->time_rate= ff_gcd(sc->time_rate, sample_duration);
981

    
982
        dprintf(c->fc, "sample_count=%d, sample_duration=%d\n",sample_count,sample_duration);
983

    
984
        duration+=(int64_t)sample_duration*sample_count;
985
        total_sample_count+=sample_count;
986
    }
987

    
988
    st->nb_frames= total_sample_count;
989
    if(duration)
990
        st->duration= duration;
991
    return 0;
992
}
993

    
994
static int mov_read_ctts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
995
{
996
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
997
    MOVStreamContext *sc = st->priv_data;
998
    unsigned int i, entries;
999

    
1000
    get_byte(pb); /* version */
1001
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1002
    entries = get_be32(pb);
1003
    if(entries >= UINT_MAX / sizeof(MOV_stts_t))
1004
        return -1;
1005

    
1006
    sc->ctts_count = entries;
1007
    sc->ctts_data = av_malloc(entries * sizeof(MOV_stts_t));
1008

    
1009
    dprintf(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
1010

    
1011
    for(i=0; i<entries; i++) {
1012
        int count    =get_be32(pb);
1013
        int duration =get_be32(pb);
1014

    
1015
        if (duration < 0) {
1016
            av_log(c->fc, AV_LOG_ERROR, "negative ctts, ignoring\n");
1017
            sc->ctts_count = 0;
1018
            url_fskip(pb, 8 * (entries - i - 1));
1019
            break;
1020
        }
1021
        sc->ctts_data[i].count   = count;
1022
        sc->ctts_data[i].duration= duration;
1023

    
1024
        sc->time_rate= ff_gcd(sc->time_rate, duration);
1025
    }
1026
    return 0;
1027
}
1028

    
1029
static int mov_read_trak(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1030
{
1031
    AVStream *st;
1032
    MOVStreamContext *sc;
1033

    
1034
    st = av_new_stream(c->fc, c->fc->nb_streams);
1035
    if (!st) return -2;
1036
    sc = av_mallocz(sizeof(MOVStreamContext));
1037
    if (!sc) {
1038
        av_free(st);
1039
        return -1;
1040
    }
1041

    
1042
    st->priv_data = sc;
1043
    st->codec->codec_type = CODEC_TYPE_DATA;
1044
    st->start_time = 0; /* XXX: check */
1045
    c->streams[c->fc->nb_streams-1] = sc;
1046

    
1047
    return mov_read_default(c, pb, atom);
1048
}
1049

    
1050
static void mov_parse_udta_string(ByteIOContext *pb, char *str, int size)
1051
{
1052
    uint16_t str_size = get_be16(pb); /* string length */;
1053

    
1054
    get_be16(pb); /* skip language */
1055
    get_buffer(pb, str, FFMIN(size, str_size));
1056
}
1057

    
1058
static int mov_read_udta(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1059
{
1060
    uint64_t end = url_ftell(pb) + atom.size;
1061

    
1062
    while (url_ftell(pb) + 8 < end) {
1063
        uint32_t tag_size = get_be32(pb);
1064
        uint32_t tag      = get_le32(pb);
1065
        uint64_t next     = url_ftell(pb) + tag_size - 8;
1066

    
1067
        if (next > end) // stop if tag_size is wrong
1068
            break;
1069

    
1070
        switch (tag) {
1071
        case MKTAG(0xa9,'n','a','m'):
1072
            mov_parse_udta_string(pb, c->fc->title,     sizeof(c->fc->title));
1073
            break;
1074
        case MKTAG(0xa9,'w','r','t'):
1075
            mov_parse_udta_string(pb, c->fc->author,    sizeof(c->fc->author));
1076
            break;
1077
        case MKTAG(0xa9,'c','p','y'):
1078
            mov_parse_udta_string(pb, c->fc->copyright, sizeof(c->fc->copyright));
1079
            break;
1080
        case MKTAG(0xa9,'i','n','f'):
1081
            mov_parse_udta_string(pb, c->fc->comment,   sizeof(c->fc->comment));
1082
            break;
1083
        default:
1084
            break;
1085
        }
1086

    
1087
        url_fseek(pb, next, SEEK_SET);
1088
    }
1089

    
1090
    return 0;
1091
}
1092

    
1093
static int mov_read_tkhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1094
{
1095
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1096
    int version = get_byte(pb);
1097

    
1098
    get_byte(pb); get_byte(pb);
1099
    get_byte(pb); /* flags */
1100
    /*
1101
    MOV_TRACK_ENABLED 0x0001
1102
    MOV_TRACK_IN_MOVIE 0x0002
1103
    MOV_TRACK_IN_PREVIEW 0x0004
1104
    MOV_TRACK_IN_POSTER 0x0008
1105
    */
1106

    
1107
    if (version == 1) {
1108
        get_be64(pb);
1109
        get_be64(pb);
1110
    } else {
1111
        get_be32(pb); /* creation time */
1112
        get_be32(pb); /* modification time */
1113
    }
1114
    st->id = (int)get_be32(pb); /* track id (NOT 0 !)*/
1115
    get_be32(pb); /* reserved */
1116
    st->start_time = 0; /* check */
1117
    (version == 1) ? get_be64(pb) : get_be32(pb); /* highlevel (considering edits) duration in movie timebase */
1118
    get_be32(pb); /* reserved */
1119
    get_be32(pb); /* reserved */
1120

    
1121
    get_be16(pb); /* layer */
1122
    get_be16(pb); /* alternate group */
1123
    get_be16(pb); /* volume */
1124
    get_be16(pb); /* reserved */
1125

    
1126
    url_fskip(pb, 36); /* display matrix */
1127

    
1128
    /* those are fixed-point */
1129
    get_be32(pb); /* track width */
1130
    get_be32(pb); /* track height */
1131

    
1132
    return 0;
1133
}
1134

    
1135
/* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
1136
/* like the files created with Adobe Premiere 5.0, for samples see */
1137
/* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
1138
static int mov_read_wide(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1139
{
1140
    int err;
1141

    
1142
    if (atom.size < 8)
1143
        return 0; /* continue */
1144
    if (get_be32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
1145
        url_fskip(pb, atom.size - 4);
1146
        return 0;
1147
    }
1148
    atom.type = get_le32(pb);
1149
    atom.offset += 8;
1150
    atom.size -= 8;
1151
    if (atom.type != MKTAG('m', 'd', 'a', 't')) {
1152
        url_fskip(pb, atom.size);
1153
        return 0;
1154
    }
1155
    err = mov_read_mdat(c, pb, atom);
1156
    return err;
1157
}
1158

    
1159
static int mov_read_cmov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1160
{
1161
#ifdef CONFIG_ZLIB
1162
    ByteIOContext ctx;
1163
    uint8_t *cmov_data;
1164
    uint8_t *moov_data; /* uncompressed data */
1165
    long cmov_len, moov_len;
1166
    int ret;
1167

    
1168
    get_be32(pb); /* dcom atom */
1169
    if (get_le32(pb) != MKTAG( 'd', 'c', 'o', 'm' ))
1170
        return -1;
1171
    if (get_le32(pb) != MKTAG( 'z', 'l', 'i', 'b' )) {
1172
        av_log(NULL, AV_LOG_ERROR, "unknown compression for cmov atom !");
1173
        return -1;
1174
    }
1175
    get_be32(pb); /* cmvd atom */
1176
    if (get_le32(pb) != MKTAG( 'c', 'm', 'v', 'd' ))
1177
        return -1;
1178
    moov_len = get_be32(pb); /* uncompressed size */
1179
    cmov_len = atom.size - 6 * 4;
1180

    
1181
    cmov_data = av_malloc(cmov_len);
1182
    if (!cmov_data)
1183
        return -1;
1184
    moov_data = av_malloc(moov_len);
1185
    if (!moov_data) {
1186
        av_free(cmov_data);
1187
        return -1;
1188
    }
1189
    get_buffer(pb, cmov_data, cmov_len);
1190
    if(uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
1191
        return -1;
1192
    if(init_put_byte(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
1193
        return -1;
1194
    atom.type = MKTAG( 'm', 'o', 'o', 'v' );
1195
    atom.offset = 0;
1196
    atom.size = moov_len;
1197
#ifdef DEBUG
1198
//    { int fd = open("/tmp/uncompheader.mov", O_WRONLY | O_CREAT); write(fd, moov_data, moov_len); close(fd); }
1199
#endif
1200
    ret = mov_read_default(c, &ctx, atom);
1201
    av_free(moov_data);
1202
    av_free(cmov_data);
1203
    return ret;
1204
#else
1205
    av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
1206
    return -1;
1207
#endif
1208
}
1209

    
1210
/* edit list atom */
1211
static int mov_read_elst(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1212
{
1213
    int i, edit_count;
1214

    
1215
    get_byte(pb); /* version */
1216
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1217
    edit_count= c->streams[c->fc->nb_streams-1]->edit_count = get_be32(pb);     /* entries */
1218

    
1219
    for(i=0; i<edit_count; i++){
1220
        get_be32(pb); /* Track duration */
1221
        get_be32(pb); /* Media time */
1222
        get_be32(pb); /* Media rate */
1223
    }
1224
    dprintf(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, c->streams[c->fc->nb_streams-1]->edit_count);
1225
    return 0;
1226
}
1227

    
1228
static const MOVParseTableEntry mov_default_parse_table[] = {
1229
/* mp4 atoms */
1230
{ MKTAG( 'c', 'o', '6', '4' ), mov_read_stco },
1231
{ MKTAG( 'c', 't', 't', 's' ), mov_read_ctts }, /* composition time to sample */
1232
{ MKTAG( 'e', 'd', 't', 's' ), mov_read_default },
1233
{ MKTAG( 'e', 'l', 's', 't' ), mov_read_elst },
1234
{ MKTAG( 'e', 'n', 'd', 'a' ), mov_read_enda },
1235
{ MKTAG( 'f', 'i', 'e', 'l' ), mov_read_extradata },
1236
{ MKTAG( 'f', 't', 'y', 'p' ), mov_read_ftyp },
1237
{ MKTAG( 'h', 'd', 'l', 'r' ), mov_read_hdlr },
1238
{ MKTAG( 'j', 'p', '2', 'h' ), mov_read_extradata },
1239
{ MKTAG( 'm', 'd', 'a', 't' ), mov_read_mdat },
1240
{ MKTAG( 'm', 'd', 'h', 'd' ), mov_read_mdhd },
1241
{ MKTAG( 'm', 'd', 'i', 'a' ), mov_read_default },
1242
{ MKTAG( 'm', 'i', 'n', 'f' ), mov_read_default },
1243
{ MKTAG( 'm', 'o', 'o', 'v' ), mov_read_moov },
1244
{ MKTAG( 'm', 'v', 'h', 'd' ), mov_read_mvhd },
1245
{ MKTAG( 'S', 'M', 'I', ' ' ), mov_read_smi }, /* Sorenson extension ??? */
1246
{ MKTAG( 'a', 'l', 'a', 'c' ), mov_read_extradata }, /* alac specific atom */
1247
{ MKTAG( 'a', 'v', 'c', 'C' ), mov_read_avcC },
1248
{ MKTAG( 's', 't', 'b', 'l' ), mov_read_default },
1249
{ MKTAG( 's', 't', 'c', 'o' ), mov_read_stco },
1250
{ MKTAG( 's', 't', 's', 'c' ), mov_read_stsc },
1251
{ MKTAG( 's', 't', 's', 'd' ), mov_read_stsd }, /* sample description */
1252
{ MKTAG( 's', 't', 's', 's' ), mov_read_stss }, /* sync sample */
1253
{ MKTAG( 's', 't', 's', 'z' ), mov_read_stsz }, /* sample size */
1254
{ MKTAG( 's', 't', 't', 's' ), mov_read_stts },
1255
{ MKTAG( 't', 'k', 'h', 'd' ), mov_read_tkhd }, /* track header */
1256
{ MKTAG( 't', 'r', 'a', 'k' ), mov_read_trak },
1257
{ MKTAG( 'u', 'd', 't', 'a' ), mov_read_udta },
1258
{ MKTAG( 'w', 'a', 'v', 'e' ), mov_read_wave },
1259
{ MKTAG( 'e', 's', 'd', 's' ), mov_read_esds },
1260
{ MKTAG( 'w', 'i', 'd', 'e' ), mov_read_wide }, /* place holder */
1261
{ MKTAG( 'c', 'm', 'o', 'v' ), mov_read_cmov },
1262
{ 0L, NULL }
1263
};
1264

    
1265
/* XXX: is it sufficient ? */
1266
static int mov_probe(AVProbeData *p)
1267
{
1268
    unsigned int offset;
1269
    uint32_t tag;
1270
    int score = 0;
1271

    
1272
    /* check file header */
1273
    offset = 0;
1274
    for(;;) {
1275
        /* ignore invalid offset */
1276
        if ((offset + 8) > (unsigned int)p->buf_size)
1277
            return score;
1278
        tag = AV_RL32(p->buf + offset + 4);
1279
        switch(tag) {
1280
        /* check for obvious tags */
1281
        case MKTAG( 'j', 'P', ' ', ' ' ): /* jpeg 2000 signature */
1282
        case MKTAG( 'm', 'o', 'o', 'v' ):
1283
        case MKTAG( 'm', 'd', 'a', 't' ):
1284
        case MKTAG( 'p', 'n', 'o', 't' ): /* detect movs with preview pics like ew.mov and april.mov */
1285
        case MKTAG( 'u', 'd', 't', 'a' ): /* Packet Video PVAuthor adds this and a lot of more junk */
1286
            return AVPROBE_SCORE_MAX;
1287
        /* those are more common words, so rate then a bit less */
1288
        case MKTAG( 'e', 'd', 'i', 'w' ): /* xdcam files have reverted first tags */
1289
        case MKTAG( 'w', 'i', 'd', 'e' ):
1290
        case MKTAG( 'f', 'r', 'e', 'e' ):
1291
        case MKTAG( 'j', 'u', 'n', 'k' ):
1292
        case MKTAG( 'p', 'i', 'c', 't' ):
1293
            return AVPROBE_SCORE_MAX - 5;
1294
        case MKTAG( 'f', 't', 'y', 'p' ):
1295
        case MKTAG( 's', 'k', 'i', 'p' ):
1296
        case MKTAG( 'u', 'u', 'i', 'd' ):
1297
            offset = AV_RB32(p->buf+offset) + offset;
1298
            /* if we only find those cause probedata is too small at least rate them */
1299
            score = AVPROBE_SCORE_MAX - 50;
1300
            break;
1301
        default:
1302
            /* unrecognized tag */
1303
            return score;
1304
        }
1305
    }
1306
    return score;
1307
}
1308

    
1309
static void mov_build_index(MOVContext *mov, AVStream *st)
1310
{
1311
    MOVStreamContext *sc = st->priv_data;
1312
    offset_t current_offset;
1313
    int64_t current_dts = 0;
1314
    unsigned int stts_index = 0;
1315
    unsigned int stsc_index = 0;
1316
    unsigned int stss_index = 0;
1317
    unsigned int i, j, k;
1318

    
1319
    if (sc->sample_sizes || st->codec->codec_type == CODEC_TYPE_VIDEO || sc->dv_audio_container) {
1320
        unsigned int current_sample = 0;
1321
        unsigned int stts_sample = 0;
1322
        unsigned int keyframe, sample_size;
1323
        unsigned int distance = 0;
1324

    
1325
        st->nb_frames = sc->sample_count;
1326
        for (i = 0; i < sc->chunk_count; i++) {
1327
            current_offset = sc->chunk_offsets[i];
1328
            if (stsc_index + 1 < sc->sample_to_chunk_sz && i + 1 == sc->sample_to_chunk[stsc_index + 1].first)
1329
                stsc_index++;
1330
            for (j = 0; j < sc->sample_to_chunk[stsc_index].count; j++) {
1331
                if (current_sample >= sc->sample_count) {
1332
                    av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
1333
                    goto out;
1334
                }
1335
                keyframe = !sc->keyframe_count || current_sample + 1 == sc->keyframes[stss_index];
1336
                if (keyframe) {
1337
                    distance = 0;
1338
                    if (stss_index + 1 < sc->keyframe_count)
1339
                        stss_index++;
1340
                }
1341
                sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
1342
                dprintf(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", size %d, distance %d, keyframe %d\n",
1343
                        st->index, current_sample, current_offset, current_dts, sample_size, distance, keyframe);
1344
                av_add_index_entry(st, current_offset, current_dts, sample_size, distance, keyframe ? AVINDEX_KEYFRAME : 0);
1345
                current_offset += sample_size;
1346
                assert(sc->stts_data[stts_index].duration % sc->time_rate == 0);
1347
                current_dts += sc->stts_data[stts_index].duration / sc->time_rate;
1348
                distance++;
1349
                stts_sample++;
1350
                current_sample++;
1351
                if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
1352
                    stts_sample = 0;
1353
                    stts_index++;
1354
                }
1355
            }
1356
        }
1357
    } else { /* read whole chunk */
1358
        unsigned int chunk_samples, chunk_size, chunk_duration;
1359

    
1360
        for (i = 0; i < sc->chunk_count; i++) {
1361
            current_offset = sc->chunk_offsets[i];
1362
            if (stsc_index + 1 < sc->sample_to_chunk_sz && i + 1 == sc->sample_to_chunk[stsc_index + 1].first)
1363
                stsc_index++;
1364
            chunk_samples = sc->sample_to_chunk[stsc_index].count;
1365
            /* get chunk size */
1366
            if (sc->sample_size > 1 || st->codec->codec_id == CODEC_ID_PCM_U8 || st->codec->codec_id == CODEC_ID_PCM_S8)
1367
                chunk_size = chunk_samples * sc->sample_size;
1368
            else if (sc->samples_per_frame > 0 && (chunk_samples * sc->bytes_per_frame % sc->samples_per_frame == 0))
1369
                chunk_size = chunk_samples * sc->bytes_per_frame / sc->samples_per_frame;
1370
            else { /* workaround to find nearest next chunk offset */
1371
                chunk_size = INT_MAX;
1372
                for (j = 0; j < mov->total_streams; j++) {
1373
                    MOVStreamContext *msc = mov->streams[j];
1374

    
1375
                    for (k = msc->next_chunk; k < msc->chunk_count; k++) {
1376
                        if (msc->chunk_offsets[k] > current_offset && msc->chunk_offsets[k] - current_offset < chunk_size) {
1377
                            chunk_size = msc->chunk_offsets[k] - current_offset;
1378
                            msc->next_chunk = k;
1379
                            break;
1380
                        }
1381
                    }
1382
                }
1383
                /* check for last chunk */
1384
                if (chunk_size == INT_MAX)
1385
                    for (j = 0; j < mov->mdat_count; j++) {
1386
                        dprintf(mov->fc, "mdat %d, offset %"PRIx64", size %"PRId64", current offset %"PRIx64"\n",
1387
                                j, mov->mdat_list[j].offset, mov->mdat_list[j].size, current_offset);
1388
                        if (mov->mdat_list[j].offset <= current_offset && mov->mdat_list[j].offset + mov->mdat_list[j].size > current_offset)
1389
                            chunk_size = mov->mdat_list[j].offset + mov->mdat_list[j].size - current_offset;
1390
                    }
1391
                assert(chunk_size != INT_MAX);
1392
                for (j = 0; j < mov->total_streams; j++) {
1393
                    mov->streams[j]->next_chunk = 0;
1394
                }
1395
            }
1396
            av_add_index_entry(st, current_offset, current_dts, chunk_size, 0, AVINDEX_KEYFRAME);
1397
            /* get chunk duration */
1398
            chunk_duration = 0;
1399
            while (chunk_samples > 0) {
1400
                if (chunk_samples < sc->stts_data[stts_index].count) {
1401
                    chunk_duration += sc->stts_data[stts_index].duration * chunk_samples;
1402
                    sc->stts_data[stts_index].count -= chunk_samples;
1403
                    break;
1404
                } else {
1405
                    chunk_duration += sc->stts_data[stts_index].duration * chunk_samples;
1406
                    chunk_samples -= sc->stts_data[stts_index].count;
1407
                    if (stts_index + 1 < sc->stts_count) {
1408
                        stts_index++;
1409
                    }
1410
                }
1411
            }
1412
            dprintf(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", size %d, duration %d\n",
1413
                    st->index, i, current_offset, current_dts, chunk_size, chunk_duration);
1414
            assert(chunk_duration % sc->time_rate == 0);
1415
            current_dts += chunk_duration / sc->time_rate;
1416
        }
1417
    }
1418
 out:
1419
    /* adjust sample count to avindex entries */
1420
    sc->sample_count = st->nb_index_entries;
1421
}
1422

    
1423
static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
1424
{
1425
    MOVContext *mov = s->priv_data;
1426
    ByteIOContext *pb = s->pb;
1427
    int i, err;
1428
    MOV_atom_t atom = { 0, 0, 0 };
1429

    
1430
    mov->fc = s;
1431
    mov->parse_table = mov_default_parse_table;
1432

    
1433
    if(!url_is_streamed(pb)) /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
1434
        atom.size = url_fsize(pb);
1435
    else
1436
        atom.size = INT64_MAX;
1437

    
1438
    /* check MOV header */
1439
    err = mov_read_default(mov, pb, atom);
1440
    if (err<0 || (!mov->found_moov && !mov->found_mdat)) {
1441
        av_log(s, AV_LOG_ERROR, "mov: header not found !!! (err:%d, moov:%d, mdat:%d) pos:%"PRId64"\n",
1442
                err, mov->found_moov, mov->found_mdat, url_ftell(pb));
1443
        return -1;
1444
    }
1445
    dprintf(mov->fc, "on_parse_exit_offset=%d\n", (int) url_ftell(pb));
1446

    
1447
    /* some cleanup : make sure we are on the mdat atom */
1448
    if(!url_is_streamed(pb) && (url_ftell(pb) != mov->mdat_offset))
1449
        url_fseek(pb, mov->mdat_offset, SEEK_SET);
1450

    
1451
    mov->total_streams = s->nb_streams;
1452

    
1453
    for(i=0; i<mov->total_streams; i++) {
1454
        MOVStreamContext *sc = mov->streams[i];
1455
        AVStream *st = s->streams[i];
1456
        /* sanity checks */
1457
        if(!sc->stts_count || !sc->chunk_count || !sc->sample_to_chunk_sz ||
1458
           (!sc->sample_size && !sc->sample_count)){
1459
            av_log(s, AV_LOG_ERROR, "missing mandatory atoms, broken header\n");
1460
            sc->sample_count = 0; //ignore track
1461
            continue;
1462
        }
1463
        if(!sc->time_rate)
1464
            sc->time_rate=1;
1465
        if(!sc->time_scale)
1466
            sc->time_scale= mov->time_scale;
1467
        av_set_pts_info(st, 64, sc->time_rate, sc->time_scale);
1468

    
1469
        if (st->codec->codec_type == CODEC_TYPE_AUDIO && sc->stts_count == 1)
1470
            st->codec->frame_size = sc->stts_data[0].duration;
1471

    
1472
        if(st->duration != AV_NOPTS_VALUE){
1473
            assert(st->duration % sc->time_rate == 0);
1474
            st->duration /= sc->time_rate;
1475
        }
1476
        sc->ffindex = i;
1477
        mov_build_index(mov, st);
1478
    }
1479

    
1480
    for(i=0; i<mov->total_streams; i++) {
1481
        /* Do not need those anymore. */
1482
        av_freep(&mov->streams[i]->chunk_offsets);
1483
        av_freep(&mov->streams[i]->sample_to_chunk);
1484
        av_freep(&mov->streams[i]->sample_sizes);
1485
        av_freep(&mov->streams[i]->keyframes);
1486
        av_freep(&mov->streams[i]->stts_data);
1487
    }
1488
    av_freep(&mov->mdat_list);
1489
    return 0;
1490
}
1491

    
1492
static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
1493
{
1494
    MOVContext *mov = s->priv_data;
1495
    MOVStreamContext *sc = 0;
1496
    AVIndexEntry *sample = 0;
1497
    int64_t best_dts = INT64_MAX;
1498
    int i;
1499

    
1500
    for (i = 0; i < mov->total_streams; i++) {
1501
        MOVStreamContext *msc = mov->streams[i];
1502

    
1503
        if (s->streams[i]->discard != AVDISCARD_ALL && msc->current_sample < msc->sample_count) {
1504
            AVIndexEntry *current_sample = &s->streams[i]->index_entries[msc->current_sample];
1505
            int64_t dts = av_rescale(current_sample->timestamp * (int64_t)msc->time_rate, AV_TIME_BASE, msc->time_scale);
1506

    
1507
            dprintf(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
1508
            if (dts < best_dts) {
1509
                sample = current_sample;
1510
                best_dts = dts;
1511
                sc = msc;
1512
            }
1513
        }
1514
    }
1515
    if (!sample)
1516
        return -1;
1517
    /* must be done just before reading, to avoid infinite loop on sample */
1518
    sc->current_sample++;
1519
    if (sample->pos >= url_fsize(s->pb)) {
1520
        av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n", sc->ffindex, sample->pos);
1521
        return -1;
1522
    }
1523
#ifdef CONFIG_DV_DEMUXER
1524
    if (sc->dv_audio_container) {
1525
        dv_get_packet(mov->dv_demux, pkt);
1526
        dprintf(s, "dv audio pkt size %d\n", pkt->size);
1527
    } else {
1528
#endif
1529
        url_fseek(s->pb, sample->pos, SEEK_SET);
1530
        av_get_packet(s->pb, pkt, sample->size);
1531
#ifdef CONFIG_DV_DEMUXER
1532
        if (mov->dv_demux) {
1533
            void *pkt_destruct_func = pkt->destruct;
1534
            dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size);
1535
            pkt->destruct = pkt_destruct_func;
1536
        }
1537
    }
1538
#endif
1539
    pkt->stream_index = sc->ffindex;
1540
    pkt->dts = sample->timestamp;
1541
    if (sc->ctts_data) {
1542
        assert(sc->ctts_data[sc->sample_to_ctime_index].duration % sc->time_rate == 0);
1543
        pkt->pts = pkt->dts + sc->ctts_data[sc->sample_to_ctime_index].duration / sc->time_rate;
1544
        /* update ctts context */
1545
        sc->sample_to_ctime_sample++;
1546
        if (sc->sample_to_ctime_index < sc->ctts_count && sc->ctts_data[sc->sample_to_ctime_index].count == sc->sample_to_ctime_sample) {
1547
            sc->sample_to_ctime_index++;
1548
            sc->sample_to_ctime_sample = 0;
1549
        }
1550
    } else {
1551
        pkt->pts = pkt->dts;
1552
    }
1553
    pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? PKT_FLAG_KEY : 0;
1554
    pkt->pos = sample->pos;
1555
    dprintf(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n", pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
1556
    return 0;
1557
}
1558

    
1559
static int mov_seek_stream(AVStream *st, int64_t timestamp, int flags)
1560
{
1561
    MOVStreamContext *sc = st->priv_data;
1562
    int sample, time_sample;
1563
    int i;
1564

    
1565
    sample = av_index_search_timestamp(st, timestamp, flags);
1566
    dprintf(st->codec, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
1567
    if (sample < 0) /* not sure what to do */
1568
        return -1;
1569
    sc->current_sample = sample;
1570
    dprintf(st->codec, "stream %d, found sample %d\n", st->index, sc->current_sample);
1571
    /* adjust ctts index */
1572
    if (sc->ctts_data) {
1573
        time_sample = 0;
1574
        for (i = 0; i < sc->ctts_count; i++) {
1575
            int next = time_sample + sc->ctts_data[i].count;
1576
            if (next > sc->current_sample) {
1577
                sc->sample_to_ctime_index = i;
1578
                sc->sample_to_ctime_sample = sc->current_sample - time_sample;
1579
                break;
1580
            }
1581
            time_sample = next;
1582
        }
1583
    }
1584
    return sample;
1585
}
1586

    
1587
static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
1588
{
1589
    AVStream *st;
1590
    int64_t seek_timestamp, timestamp;
1591
    int sample;
1592
    int i;
1593

    
1594
    if (stream_index >= s->nb_streams)
1595
        return -1;
1596

    
1597
    st = s->streams[stream_index];
1598
    sample = mov_seek_stream(st, sample_time, flags);
1599
    if (sample < 0)
1600
        return -1;
1601

    
1602
    /* adjust seek timestamp to found sample timestamp */
1603
    seek_timestamp = st->index_entries[sample].timestamp;
1604

    
1605
    for (i = 0; i < s->nb_streams; i++) {
1606
        st = s->streams[i];
1607
        if (stream_index == i || st->discard == AVDISCARD_ALL)
1608
            continue;
1609

    
1610
        timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
1611
        mov_seek_stream(st, timestamp, flags);
1612
    }
1613
    return 0;
1614
}
1615

    
1616
static int mov_read_close(AVFormatContext *s)
1617
{
1618
    int i;
1619
    MOVContext *mov = s->priv_data;
1620
    for(i=0; i<mov->total_streams; i++) {
1621
        av_freep(&mov->streams[i]->ctts_data);
1622
        av_freep(&mov->streams[i]);
1623
    }
1624
    if(mov->dv_demux){
1625
        for(i=0; i<mov->dv_fctx->nb_streams; i++){
1626
            av_freep(&mov->dv_fctx->streams[i]->codec);
1627
            av_freep(&mov->dv_fctx->streams[i]);
1628
        }
1629
        av_freep(&mov->dv_fctx);
1630
        av_freep(&mov->dv_demux);
1631
    }
1632
    return 0;
1633
}
1634

    
1635
AVInputFormat mov_demuxer = {
1636
    "mov,mp4,m4a,3gp,3g2,mj2",
1637
    "QuickTime/MPEG4/Motion JPEG 2000 format",
1638
    sizeof(MOVContext),
1639
    mov_probe,
1640
    mov_read_header,
1641
    mov_read_packet,
1642
    mov_read_close,
1643
    mov_read_seek,
1644
};