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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
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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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"
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#include "isom.h"
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#include "dv.h"
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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
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 * 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:
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 *  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) */
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} MOV_atom_t;
77

    
78
struct MOVParseTableEntry;
79

    
80
typedef struct MOVStreamContext {
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    int ffindex; /* the ffmpeg stream id */
82
    int next_chunk;
83
    unsigned int chunk_count;
84
    int64_t *chunk_offsets;
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    unsigned int stts_count;
86
    MOV_stts_t *stts_data;
87
    unsigned int ctts_count;
88
    MOV_stts_t *ctts_data;
89
    unsigned int edit_count; /* number of 'edit' (elst atom) */
90
    unsigned int sample_to_chunk_sz;
91
    MOV_stsc_t *sample_to_chunk;
92
    int sample_to_ctime_index;
93
    int sample_to_ctime_sample;
94
    unsigned int sample_size;
95
    unsigned int sample_count;
96
    int *sample_sizes;
97
    unsigned int keyframe_count;
98
    int *keyframes;
99
    int time_scale;
100
    int time_rate;
101
    int current_sample;
102
    unsigned int bytes_per_frame;
103
    unsigned int samples_per_frame;
104
    int dv_audio_container;
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    int pseudo_stream_id;
106
    int16_t audio_cid; ///< stsd audio compression id
107
} MOVStreamContext;
108

    
109
typedef struct MOVContext {
110
    AVFormatContext *fc;
111
    int time_scale;
112
    int64_t duration; /* duration of the longest track */
113
    int found_moov; /* when both 'moov' and 'mdat' sections has been found */
114
    int found_mdat; /* we suppose we have enough data to read the file */
115
    AVPaletteControl palette_control;
116
    DVDemuxContext *dv_demux;
117
    AVFormatContext *dv_fctx;
118
    int isom; /* 1 if file is ISO Media (mp4/3gp) */
119
} MOVContext;
120

    
121

    
122
/* XXX: it's the first time I make a recursive parser I think... sorry if it's ugly :P */
123

    
124
/* those functions parse an atom */
125
/* return code:
126
 1: found what I wanted, exit
127
 0: continue to parse next atom
128
 -1: error occured, exit
129
 */
130
/* links atom IDs to parse functions */
131
typedef struct MOVParseTableEntry {
132
    uint32_t type;
133
    int (*parse)(MOVContext *ctx, ByteIOContext *pb, MOV_atom_t atom);
134
} MOVParseTableEntry;
135

    
136
static const MOVParseTableEntry mov_default_parse_table[];
137

    
138
static int mov_read_default(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
139
{
140
    int64_t total_size = 0;
141
    MOV_atom_t a;
142
    int i;
143
    int err = 0;
144

    
145
    a.offset = atom.offset;
146

    
147
    if (atom.size < 0)
148
        atom.size = INT64_MAX;
149
    while(((total_size + 8) < atom.size) && !url_feof(pb) && !err) {
150
        a.size = atom.size;
151
        a.type=0;
152
        if(atom.size >= 8) {
153
            a.size = get_be32(pb);
154
            a.type = get_le32(pb);
155
        }
156
        total_size += 8;
157
        a.offset += 8;
158
        dprintf(c->fc, "type: %08x  %.4s  sz: %"PRIx64"  %"PRIx64"   %"PRIx64"\n",
159
                a.type, (char*)&a.type, a.size, atom.size, total_size);
160
        if (a.size == 1) { /* 64 bit extended size */
161
            a.size = get_be64(pb) - 8;
162
            a.offset += 8;
163
            total_size += 8;
164
        }
165
        if (a.size == 0) {
166
            a.size = atom.size - total_size;
167
            if (a.size <= 8)
168
                break;
169
        }
170
        a.size -= 8;
171
        if(a.size < 0)
172
            break;
173
        a.size = FFMIN(a.size, atom.size - total_size);
174

    
175
        for (i = 0; mov_default_parse_table[i].type != 0
176
             && mov_default_parse_table[i].type != a.type; i++)
177
            /* empty */;
178

    
179
        if (mov_default_parse_table[i].type == 0) { /* skip leaf atoms data */
180
            url_fskip(pb, a.size);
181
        } else {
182
            offset_t start_pos = url_ftell(pb);
183
            int64_t left;
184
            err = mov_default_parse_table[i].parse(c, pb, a);
185
            if (c->found_moov && c->found_mdat)
186
                break;
187
            left = a.size - url_ftell(pb) + start_pos;
188
            if (left > 0) /* skip garbage at atom end */
189
                url_fskip(pb, left);
190
        }
191

    
192
        a.offset += a.size;
193
        total_size += a.size;
194
    }
195

    
196
    if (!err && total_size < atom.size && atom.size < 0x7ffff) {
197
        url_fskip(pb, atom.size - total_size);
198
    }
199

    
200
    return err;
201
}
202

    
203
static int mov_read_hdlr(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
204
{
205
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
206
    uint32_t type;
207
    uint32_t ctype;
208

    
209
    get_byte(pb); /* version */
210
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
211

    
212
    /* component type */
213
    ctype = get_le32(pb);
214
    type = get_le32(pb); /* component subtype */
215

    
216
    dprintf(c->fc, "ctype= %c%c%c%c (0x%08x)\n", *((char *)&ctype), ((char *)&ctype)[1],
217
            ((char *)&ctype)[2], ((char *)&ctype)[3], (int) ctype);
218
    dprintf(c->fc, "stype= %c%c%c%c\n",
219
            *((char *)&type), ((char *)&type)[1], ((char *)&type)[2], ((char *)&type)[3]);
220
    if(!ctype)
221
        c->isom = 1;
222
    if(type == MKTAG('v', 'i', 'd', 'e'))
223
        st->codec->codec_type = CODEC_TYPE_VIDEO;
224
    else if(type == MKTAG('s', 'o', 'u', 'n'))
225
        st->codec->codec_type = CODEC_TYPE_AUDIO;
226
    else if(type == MKTAG('m', '1', 'a', ' '))
227
        st->codec->codec_id = CODEC_ID_MP2;
228
    else if(type == MKTAG('s', 'u', 'b', 'p')) {
229
        st->codec->codec_type = CODEC_TYPE_SUBTITLE;
230
    }
231
    get_be32(pb); /* component  manufacture */
232
    get_be32(pb); /* component flags */
233
    get_be32(pb); /* component flags mask */
234

    
235
    if(atom.size <= 24)
236
        return 0; /* nothing left to read */
237

    
238
    url_fskip(pb, atom.size - (url_ftell(pb) - atom.offset));
239
    return 0;
240
}
241

    
242
static int mp4_read_descr_len(ByteIOContext *pb)
243
{
244
    int len = 0;
245
    int count = 4;
246
    while (count--) {
247
        int c = get_byte(pb);
248
        len = (len << 7) | (c & 0x7f);
249
        if (!(c & 0x80))
250
            break;
251
    }
252
    return len;
253
}
254

    
255
static int mp4_read_descr(MOVContext *c, ByteIOContext *pb, int *tag)
256
{
257
    int len;
258
    *tag = get_byte(pb);
259
    len = mp4_read_descr_len(pb);
260
    dprintf(c->fc, "MPEG4 description: tag=0x%02x len=%d\n", *tag, len);
261
    return len;
262
}
263

    
264
#define MP4ESDescrTag                   0x03
265
#define MP4DecConfigDescrTag            0x04
266
#define MP4DecSpecificDescrTag          0x05
267

    
268
static int mov_read_esds(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
269
{
270
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
271
    int tag, len;
272

    
273
    get_be32(pb); /* version + flags */
274
    len = mp4_read_descr(c, pb, &tag);
275
    if (tag == MP4ESDescrTag) {
276
        get_be16(pb); /* ID */
277
        get_byte(pb); /* priority */
278
    } else
279
        get_be16(pb); /* ID */
280

    
281
    len = mp4_read_descr(c, pb, &tag);
282
    if (tag == MP4DecConfigDescrTag) {
283
        int object_type_id = get_byte(pb);
284
        get_byte(pb); /* stream type */
285
        get_be24(pb); /* buffer size db */
286
        get_be32(pb); /* max bitrate */
287
        get_be32(pb); /* avg bitrate */
288

    
289
        st->codec->codec_id= codec_get_id(ff_mp4_obj_type, object_type_id);
290
        dprintf(c->fc, "esds object type id %d\n", object_type_id);
291
        len = mp4_read_descr(c, pb, &tag);
292
        if (tag == MP4DecSpecificDescrTag) {
293
            dprintf(c->fc, "Specific MPEG4 header len=%d\n", len);
294
            st->codec->extradata = av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
295
            if (st->codec->extradata) {
296
                get_buffer(pb, st->codec->extradata, len);
297
                st->codec->extradata_size = len;
298
                /* from mplayer */
299
                if ((*st->codec->extradata >> 3) == 29) {
300
                    st->codec->codec_id = CODEC_ID_MP3ON4;
301
                }
302
            }
303
        }
304
    }
305
    return 0;
306
}
307

    
308
/* this atom contains actual media data */
309
static int mov_read_mdat(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
310
{
311
    if(atom.size == 0) /* wrong one (MP4) */
312
        return 0;
313
    c->found_mdat=1;
314
    if(c->found_moov)
315
        return 1; /* found both, just go */
316
    url_fskip(pb, atom.size);
317
    return 0; /* now go for moov */
318
}
319

    
320
static int mov_read_ftyp(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
321
{
322
    uint32_t type = get_le32(pb);
323

    
324
    if (type != MKTAG('q','t',' ',' '))
325
        c->isom = 1;
326
    av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
327
    get_be32(pb); /* minor version */
328
    url_fskip(pb, atom.size - 8);
329
    return 0;
330
}
331

    
332
/* this atom should contain all header atoms */
333
static int mov_read_moov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
334
{
335
    if (mov_read_default(c, pb, atom) < 0)
336
        return -1;
337
    /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
338
    /* so we don't parse the whole file if over a network */
339
    c->found_moov=1;
340
    if(c->found_mdat)
341
        return 1; /* found both, just go */
342
    return 0; /* now go for mdat */
343
}
344

    
345

    
346
static int mov_read_mdhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
347
{
348
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
349
    MOVStreamContext *sc = st->priv_data;
350
    int version = get_byte(pb);
351
    int lang;
352

    
353
    if (version > 1)
354
        return 1; /* unsupported */
355

    
356
    get_byte(pb); get_byte(pb);
357
    get_byte(pb); /* flags */
358

    
359
    if (version == 1) {
360
        get_be64(pb);
361
        get_be64(pb);
362
    } else {
363
        get_be32(pb); /* creation time */
364
        get_be32(pb); /* modification time */
365
    }
366

    
367
    sc->time_scale = get_be32(pb);
368
    st->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
369

    
370
    lang = get_be16(pb); /* language */
371
    ff_mov_lang_to_iso639(lang, st->language);
372
    get_be16(pb); /* quality */
373

    
374
    return 0;
375
}
376

    
377
static int mov_read_mvhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
378
{
379
    int version = get_byte(pb); /* version */
380
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
381

    
382
    if (version == 1) {
383
        get_be64(pb);
384
        get_be64(pb);
385
    } else {
386
        get_be32(pb); /* creation time */
387
        get_be32(pb); /* modification time */
388
    }
389
    c->time_scale = get_be32(pb); /* time scale */
390

    
391
    dprintf(c->fc, "time scale = %i\n", c->time_scale);
392

    
393
    c->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
394
    get_be32(pb); /* preferred scale */
395

    
396
    get_be16(pb); /* preferred volume */
397

    
398
    url_fskip(pb, 10); /* reserved */
399

    
400
    url_fskip(pb, 36); /* display matrix */
401

    
402
    get_be32(pb); /* preview time */
403
    get_be32(pb); /* preview duration */
404
    get_be32(pb); /* poster time */
405
    get_be32(pb); /* selection time */
406
    get_be32(pb); /* selection duration */
407
    get_be32(pb); /* current time */
408
    get_be32(pb); /* next track ID */
409

    
410
    return 0;
411
}
412

    
413
static int mov_read_smi(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
414
{
415
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
416

    
417
    if((uint64_t)atom.size > (1<<30))
418
        return -1;
419

    
420
    // currently SVQ3 decoder expect full STSD header - so let's fake it
421
    // this should be fixed and just SMI header should be passed
422
    av_free(st->codec->extradata);
423
    st->codec->extradata_size = 0x5a + atom.size;
424
    st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
425

    
426
    if (st->codec->extradata) {
427
        memcpy(st->codec->extradata, "SVQ3", 4); // fake
428
        get_buffer(pb, st->codec->extradata + 0x5a, atom.size);
429
        dprintf(c->fc, "Reading SMI %"PRId64"  %s\n", atom.size, st->codec->extradata + 0x5a);
430
    } else
431
        url_fskip(pb, atom.size);
432

    
433
    return 0;
434
}
435

    
436
static int mov_read_enda(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
437
{
438
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
439
    int little_endian = get_be16(pb);
440

    
441
    if (little_endian) {
442
        switch (st->codec->codec_id) {
443
        case CODEC_ID_PCM_S24BE:
444
            st->codec->codec_id = CODEC_ID_PCM_S24LE;
445
            break;
446
        case CODEC_ID_PCM_S32BE:
447
            st->codec->codec_id = CODEC_ID_PCM_S32LE;
448
            break;
449
        default:
450
            break;
451
        }
452
    }
453
    return 0;
454
}
455

    
456
/* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
457
static int mov_read_extradata(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
458
{
459
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
460
    uint64_t size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
461
    uint8_t *buf;
462
    if(size > INT_MAX || (uint64_t)atom.size > INT_MAX)
463
        return -1;
464
    buf= av_realloc(st->codec->extradata, size);
465
    if(!buf)
466
        return -1;
467
    st->codec->extradata= buf;
468
    buf+= st->codec->extradata_size;
469
    st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE;
470
    AV_WB32(       buf    , atom.size + 8);
471
    AV_WL32(       buf + 4, atom.type);
472
    get_buffer(pb, buf + 8, atom.size);
473
    return 0;
474
}
475

    
476
static int mov_read_wave(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
477
{
478
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
479

    
480
    if((uint64_t)atom.size > (1<<30))
481
        return -1;
482

    
483
    if (st->codec->codec_id == CODEC_ID_QDM2) {
484
        // pass all frma atom to codec, needed at least for QDM2
485
        av_free(st->codec->extradata);
486
        st->codec->extradata_size = atom.size;
487
        st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
488

    
489
        if (st->codec->extradata) {
490
            get_buffer(pb, st->codec->extradata, atom.size);
491
        } else
492
            url_fskip(pb, atom.size);
493
    } else if (atom.size > 8) { /* to read frma, esds atoms */
494
        if (mov_read_default(c, pb, atom) < 0)
495
            return -1;
496
    } else
497
        url_fskip(pb, atom.size);
498
    return 0;
499
}
500

    
501
/**
502
 * This function reads atom content and puts data in extradata without tag
503
 * nor size unlike mov_read_extradata.
504
 */
505
static int mov_read_glbl(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
506
{
507
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
508

    
509
    if((uint64_t)atom.size > (1<<30))
510
        return -1;
511

    
512
    av_free(st->codec->extradata);
513

    
514
    st->codec->extradata_size = atom.size;
515
    st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
516

    
517
    if (st->codec->extradata) {
518
        get_buffer(pb, st->codec->extradata, atom.size);
519
    } else
520
        url_fskip(pb, atom.size);
521

    
522
    return 0;
523
}
524

    
525
static int mov_read_stco(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
526
{
527
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
528
    MOVStreamContext *sc = st->priv_data;
529
    unsigned int i, entries;
530

    
531
    get_byte(pb); /* version */
532
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
533

    
534
    entries = get_be32(pb);
535

    
536
    if(entries >= UINT_MAX/sizeof(int64_t))
537
        return -1;
538

    
539
    sc->chunk_count = entries;
540
    sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
541
    if (!sc->chunk_offsets)
542
        return -1;
543
    if (atom.type == MKTAG('s', 't', 'c', 'o')) {
544
        for(i=0; i<entries; i++) {
545
            sc->chunk_offsets[i] = get_be32(pb);
546
        }
547
    } else if (atom.type == MKTAG('c', 'o', '6', '4')) {
548
        for(i=0; i<entries; i++) {
549
            sc->chunk_offsets[i] = get_be64(pb);
550
        }
551
    } else
552
        return -1;
553

    
554
    return 0;
555
}
556

    
557
static int mov_read_stsd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
558
{
559
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
560
    MOVStreamContext *sc = st->priv_data;
561
    int entries, frames_per_sample;
562
    uint32_t format;
563
    uint8_t codec_name[32];
564

    
565
    /* for palette traversal */
566
    unsigned int color_depth;
567
    unsigned int color_start;
568
    unsigned int color_count;
569
    unsigned int color_end;
570
    int color_index;
571
    int color_dec;
572
    int color_greyscale;
573
    const uint8_t *color_table;
574
    int j, pseudo_stream_id;
575
    unsigned char r, g, b;
576

    
577
    get_byte(pb); /* version */
578
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
579

    
580
    entries = get_be32(pb);
581

    
582
    for(pseudo_stream_id=0; pseudo_stream_id<entries; pseudo_stream_id++) { //Parsing Sample description table
583
        enum CodecID id;
584
        MOV_atom_t a = { 0, 0, 0 };
585
        offset_t start_pos = url_ftell(pb);
586
        int size = get_be32(pb); /* size */
587
        format = get_le32(pb); /* data format */
588

    
589
        get_be32(pb); /* reserved */
590
        get_be16(pb); /* reserved */
591
        get_be16(pb); /* index */
592

    
593
        if (st->codec->codec_tag &&
594
            (c->fc->video_codec_id ? codec_get_id(codec_movvideo_tags, format) != c->fc->video_codec_id
595
                                   : st->codec->codec_tag != MKTAG('j', 'p', 'e', 'g'))
596
           ){
597
            /* multiple fourcc, we skip jpeg, this isnt correct, we should export it as
598
               seperate AVStream but this needs a few changes in the mov demuxer, patch
599
               welcome */
600
            url_fskip(pb, size - (url_ftell(pb) - start_pos));
601
            continue;
602
        }
603
        sc->pseudo_stream_id= pseudo_stream_id;
604

    
605
        st->codec->codec_tag = format;
606
        id = codec_get_id(codec_movaudio_tags, format);
607
        if (id<=0 && (format&0xFFFF) == 'm' + ('s'<<8))
608
            id = codec_get_id(codec_wav_tags, bswap_32(format)&0xFFFF);
609

    
610
        if (st->codec->codec_type != CODEC_TYPE_VIDEO && id > 0) {
611
            st->codec->codec_type = CODEC_TYPE_AUDIO;
612
        } else if (st->codec->codec_type != CODEC_TYPE_AUDIO && /* do not overwrite codec type */
613
                   format && format != MKTAG('m', 'p', '4', 's')) { /* skip old asf mpeg4 tag */
614
            id = codec_get_id(codec_movvideo_tags, format);
615
            if (id <= 0)
616
                id = codec_get_id(codec_bmp_tags, format);
617
            if (id > 0)
618
                st->codec->codec_type = CODEC_TYPE_VIDEO;
619
            else if(st->codec->codec_type == CODEC_TYPE_DATA){
620
                id = codec_get_id(ff_codec_movsubtitle_tags, format);
621
                if(id > 0)
622
                    st->codec->codec_type = CODEC_TYPE_SUBTITLE;
623
            }
624
        }
625

    
626
        dprintf(c->fc, "size=%d 4CC= %c%c%c%c codec_type=%d\n", size,
627
                (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff,
628
                (format >> 24) & 0xff, st->codec->codec_type);
629

    
630
        if(st->codec->codec_type==CODEC_TYPE_VIDEO) {
631
            st->codec->codec_id = id;
632
            get_be16(pb); /* version */
633
            get_be16(pb); /* revision level */
634
            get_be32(pb); /* vendor */
635
            get_be32(pb); /* temporal quality */
636
            get_be32(pb); /* spatial quality */
637

    
638
            st->codec->width = get_be16(pb); /* width */
639
            st->codec->height = get_be16(pb); /* height */
640

    
641
            get_be32(pb); /* horiz resolution */
642
            get_be32(pb); /* vert resolution */
643
            get_be32(pb); /* data size, always 0 */
644
            frames_per_sample = get_be16(pb); /* frames per samples */
645

    
646
            dprintf(c->fc, "frames/samples = %d\n", frames_per_sample);
647

    
648
            get_buffer(pb, codec_name, 32); /* codec name, pascal string (FIXME: true for mp4?) */
649
            if (codec_name[0] <= 31) {
650
                memcpy(st->codec->codec_name, &codec_name[1],codec_name[0]);
651
                st->codec->codec_name[codec_name[0]] = 0;
652
            }
653

    
654
            st->codec->bits_per_sample = get_be16(pb); /* depth */
655
            st->codec->color_table_id = get_be16(pb); /* colortable id */
656

    
657
            /* figure out the palette situation */
658
            color_depth = st->codec->bits_per_sample & 0x1F;
659
            color_greyscale = st->codec->bits_per_sample & 0x20;
660

    
661
            /* if the depth is 2, 4, or 8 bpp, file is palettized */
662
            if ((color_depth == 2) || (color_depth == 4) ||
663
                (color_depth == 8)) {
664
                if (color_greyscale) {
665
                    /* compute the greyscale palette */
666
                    color_count = 1 << color_depth;
667
                    color_index = 255;
668
                    color_dec = 256 / (color_count - 1);
669
                    for (j = 0; j < color_count; j++) {
670
                        r = g = b = color_index;
671
                        c->palette_control.palette[j] =
672
                            (r << 16) | (g << 8) | (b);
673
                        color_index -= color_dec;
674
                        if (color_index < 0)
675
                            color_index = 0;
676
                    }
677
                } else if (st->codec->color_table_id & 0x08) {
678
                    /* if flag bit 3 is set, use the default palette */
679
                    color_count = 1 << color_depth;
680
                    if (color_depth == 2)
681
                        color_table = ff_qt_default_palette_4;
682
                    else if (color_depth == 4)
683
                        color_table = ff_qt_default_palette_16;
684
                    else
685
                        color_table = ff_qt_default_palette_256;
686

    
687
                    for (j = 0; j < color_count; j++) {
688
                        r = color_table[j * 4 + 0];
689
                        g = color_table[j * 4 + 1];
690
                        b = color_table[j * 4 + 2];
691
                        c->palette_control.palette[j] =
692
                            (r << 16) | (g << 8) | (b);
693
                    }
694
                } else {
695
                    /* load the palette from the file */
696
                    color_start = get_be32(pb);
697
                    color_count = get_be16(pb);
698
                    color_end = get_be16(pb);
699
                    if ((color_start <= 255) &&
700
                        (color_end <= 255)) {
701
                        for (j = color_start; j <= color_end; j++) {
702
                            /* each R, G, or B component is 16 bits;
703
                             * only use the top 8 bits; skip alpha bytes
704
                             * up front */
705
                            get_byte(pb);
706
                            get_byte(pb);
707
                            r = get_byte(pb);
708
                            get_byte(pb);
709
                            g = get_byte(pb);
710
                            get_byte(pb);
711
                            b = get_byte(pb);
712
                            get_byte(pb);
713
                            c->palette_control.palette[j] =
714
                                (r << 16) | (g << 8) | (b);
715
                        }
716
                    }
717
                }
718
                st->codec->palctrl = &c->palette_control;
719
                st->codec->palctrl->palette_changed = 1;
720
            } else
721
                st->codec->palctrl = NULL;
722
        } else if(st->codec->codec_type==CODEC_TYPE_AUDIO) {
723
            int bits_per_sample;
724
            uint16_t version = get_be16(pb);
725

    
726
            st->codec->codec_id = id;
727
            get_be16(pb); /* revision level */
728
            get_be32(pb); /* vendor */
729

    
730
            st->codec->channels = get_be16(pb);             /* channel count */
731
            dprintf(c->fc, "audio channels %d\n", st->codec->channels);
732
            st->codec->bits_per_sample = get_be16(pb);      /* sample size */
733

    
734
            sc->audio_cid = get_be16(pb);
735
            get_be16(pb); /* packet size = 0 */
736

    
737
            st->codec->sample_rate = ((get_be32(pb) >> 16));
738

    
739
            switch (st->codec->codec_id) {
740
            case CODEC_ID_PCM_S8:
741
            case CODEC_ID_PCM_U8:
742
                if (st->codec->bits_per_sample == 16)
743
                    st->codec->codec_id = CODEC_ID_PCM_S16BE;
744
                break;
745
            case CODEC_ID_PCM_S16LE:
746
            case CODEC_ID_PCM_S16BE:
747
                if (st->codec->bits_per_sample == 8)
748
                    st->codec->codec_id = CODEC_ID_PCM_S8;
749
                else if (st->codec->bits_per_sample == 24)
750
                    st->codec->codec_id = CODEC_ID_PCM_S24BE;
751
                break;
752
            /* set values for old format before stsd version 1 appeared */
753
            case CODEC_ID_MACE3:
754
                sc->samples_per_frame = 6;
755
                sc->bytes_per_frame = 2*st->codec->channels;
756
                break;
757
            case CODEC_ID_MACE6:
758
                sc->samples_per_frame = 6;
759
                sc->bytes_per_frame = 1*st->codec->channels;
760
                break;
761
            case CODEC_ID_ADPCM_IMA_QT:
762
                sc->samples_per_frame = 64;
763
                sc->bytes_per_frame = 34*st->codec->channels;
764
                break;
765
            default:
766
                break;
767
            }
768

    
769
            //Read QT version 1 fields. In version 0 these do not exist.
770
            dprintf(c->fc, "version =%d, isom =%d\n",version,c->isom);
771
            if(!c->isom) {
772
                if(version==1) {
773
                    sc->samples_per_frame = get_be32(pb);
774
                    get_be32(pb); /* bytes per packet */
775
                    sc->bytes_per_frame = get_be32(pb);
776
                    get_be32(pb); /* bytes per sample */
777
                } else if(version==2) {
778
                    get_be32(pb); /* sizeof struct only */
779
                    st->codec->sample_rate = av_int2dbl(get_be64(pb)); /* float 64 */
780
                    st->codec->channels = get_be32(pb);
781
                    get_be32(pb); /* always 0x7F000000 */
782
                    get_be32(pb); /* bits per channel if sound is uncompressed */
783
                    get_be32(pb); /* lcpm format specific flag */
784
                    get_be32(pb); /* bytes per audio packet if constant */
785
                    get_be32(pb); /* lpcm frames per audio packet if constant */
786
                }
787
            }
788

    
789
            bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
790
            if (bits_per_sample) {
791
                st->codec->bits_per_sample = bits_per_sample;
792
                sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
793
            }
794
        } else if(st->codec->codec_type==CODEC_TYPE_SUBTITLE){
795
            st->codec->codec_id= id;
796
        } else {
797
            /* other codec type, just skip (rtp, mp4s, tmcd ...) */
798
            url_fskip(pb, size - (url_ftell(pb) - start_pos));
799
        }
800
        /* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */
801
        a.size = size - (url_ftell(pb) - start_pos);
802
        if (a.size > 8) {
803
            if (mov_read_default(c, pb, a) < 0)
804
                return -1;
805
        } else if (a.size > 0)
806
            url_fskip(pb, a.size);
807
    }
808

    
809
    if(st->codec->codec_type==CODEC_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1) {
810
        st->codec->sample_rate= sc->time_scale;
811
    }
812

    
813
    /* special codec parameters handling */
814
    switch (st->codec->codec_id) {
815
#ifdef CONFIG_H261_DECODER
816
    case CODEC_ID_H261:
817
#endif
818
#ifdef CONFIG_H263_DECODER
819
    case CODEC_ID_H263:
820
#endif
821
#ifdef CONFIG_MPEG4_DECODER
822
    case CODEC_ID_MPEG4:
823
#endif
824
        st->codec->width= 0; /* let decoder init width/height */
825
        st->codec->height= 0;
826
        break;
827
#ifdef CONFIG_LIBFAAD
828
    case CODEC_ID_AAC:
829
#endif
830
#ifdef CONFIG_VORBIS_DECODER
831
    case CODEC_ID_VORBIS:
832
#endif
833
    case CODEC_ID_MP3ON4:
834
        st->codec->sample_rate= 0; /* let decoder init parameters properly */
835
        break;
836
#ifdef CONFIG_DV_DEMUXER
837
    case CODEC_ID_DVAUDIO:
838
        c->dv_fctx = av_alloc_format_context();
839
        c->dv_demux = dv_init_demux(c->dv_fctx);
840
        if (!c->dv_demux) {
841
            av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
842
            return -1;
843
        }
844
        sc->dv_audio_container = 1;
845
        st->codec->codec_id = CODEC_ID_PCM_S16LE;
846
        break;
847
#endif
848
    /* no ifdef since parameters are always those */
849
    case CODEC_ID_AMR_WB:
850
        st->codec->sample_rate= 16000;
851
        st->codec->channels= 1; /* really needed */
852
        break;
853
    case CODEC_ID_AMR_NB:
854
        st->codec->sample_rate= 8000;
855
        st->codec->channels= 1; /* really needed */
856
        break;
857
    case CODEC_ID_MP2:
858
    case CODEC_ID_MP3:
859
        st->codec->codec_type = CODEC_TYPE_AUDIO; /* force type after stsd for m1a hdlr */
860
        st->need_parsing = AVSTREAM_PARSE_FULL;
861
        break;
862
    case CODEC_ID_ADPCM_MS:
863
    case CODEC_ID_ADPCM_IMA_WAV:
864
        st->codec->block_align = sc->bytes_per_frame;
865
        break;
866
    default:
867
        break;
868
    }
869

    
870
    return 0;
871
}
872

    
873
static int mov_read_stsc(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
874
{
875
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
876
    MOVStreamContext *sc = st->priv_data;
877
    unsigned int i, entries;
878

    
879
    get_byte(pb); /* version */
880
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
881

    
882
    entries = get_be32(pb);
883

    
884
    if(entries >= UINT_MAX / sizeof(MOV_stsc_t))
885
        return -1;
886

    
887
    dprintf(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
888

    
889
    sc->sample_to_chunk_sz = entries;
890
    sc->sample_to_chunk = av_malloc(entries * sizeof(MOV_stsc_t));
891
    if (!sc->sample_to_chunk)
892
        return -1;
893
    for(i=0; i<entries; i++) {
894
        sc->sample_to_chunk[i].first = get_be32(pb);
895
        sc->sample_to_chunk[i].count = get_be32(pb);
896
        sc->sample_to_chunk[i].id = get_be32(pb);
897
    }
898
    return 0;
899
}
900

    
901
static int mov_read_stss(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
902
{
903
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
904
    MOVStreamContext *sc = st->priv_data;
905
    unsigned int i, entries;
906

    
907
    get_byte(pb); /* version */
908
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
909

    
910
    entries = get_be32(pb);
911

    
912
    if(entries >= UINT_MAX / sizeof(int))
913
        return -1;
914

    
915
    sc->keyframe_count = entries;
916

    
917
    dprintf(c->fc, "keyframe_count = %d\n", sc->keyframe_count);
918

    
919
    sc->keyframes = av_malloc(entries * sizeof(int));
920
    if (!sc->keyframes)
921
        return -1;
922
    for(i=0; i<entries; i++) {
923
        sc->keyframes[i] = get_be32(pb);
924
        //dprintf(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
925
    }
926
    return 0;
927
}
928

    
929
static int mov_read_stsz(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
930
{
931
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
932
    MOVStreamContext *sc = st->priv_data;
933
    unsigned int i, entries, sample_size;
934

    
935
    get_byte(pb); /* version */
936
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
937

    
938
    sample_size = get_be32(pb);
939
    if (!sc->sample_size) /* do not overwrite value computed in stsd */
940
        sc->sample_size = sample_size;
941
    entries = get_be32(pb);
942
    if(entries >= UINT_MAX / sizeof(int))
943
        return -1;
944

    
945
    sc->sample_count = entries;
946
    if (sample_size)
947
        return 0;
948

    
949
    dprintf(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, sc->sample_count);
950

    
951
    sc->sample_sizes = av_malloc(entries * sizeof(int));
952
    if (!sc->sample_sizes)
953
        return -1;
954
    for(i=0; i<entries; i++) {
955
        sc->sample_sizes[i] = get_be32(pb);
956
        dprintf(c->fc, "sample_sizes[]=%d\n", sc->sample_sizes[i]);
957
    }
958
    return 0;
959
}
960

    
961
static int mov_read_stts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
962
{
963
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
964
    MOVStreamContext *sc = st->priv_data;
965
    unsigned int i, entries;
966
    int64_t duration=0;
967
    int64_t total_sample_count=0;
968

    
969
    get_byte(pb); /* version */
970
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
971
    entries = get_be32(pb);
972
    if(entries >= UINT_MAX / sizeof(MOV_stts_t))
973
        return -1;
974

    
975
    sc->stts_count = entries;
976
    sc->stts_data = av_malloc(entries * sizeof(MOV_stts_t));
977
    if (!sc->stts_data)
978
        return -1;
979
    dprintf(c->fc, "track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries);
980

    
981
    sc->time_rate=0;
982

    
983
    for(i=0; i<entries; i++) {
984
        int sample_duration;
985
        int sample_count;
986

    
987
        sample_count=get_be32(pb);
988
        sample_duration = get_be32(pb);
989
        sc->stts_data[i].count= sample_count;
990
        sc->stts_data[i].duration= sample_duration;
991

    
992
        sc->time_rate= ff_gcd(sc->time_rate, sample_duration);
993

    
994
        dprintf(c->fc, "sample_count=%d, sample_duration=%d\n",sample_count,sample_duration);
995

    
996
        duration+=(int64_t)sample_duration*sample_count;
997
        total_sample_count+=sample_count;
998
    }
999

    
1000
    st->nb_frames= total_sample_count;
1001
    if(duration)
1002
        st->duration= duration;
1003
    return 0;
1004
}
1005

    
1006
static int mov_read_ctts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1007
{
1008
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1009
    MOVStreamContext *sc = st->priv_data;
1010
    unsigned int i, entries;
1011

    
1012
    get_byte(pb); /* version */
1013
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1014
    entries = get_be32(pb);
1015
    if(entries >= UINT_MAX / sizeof(MOV_stts_t))
1016
        return -1;
1017

    
1018
    sc->ctts_count = entries;
1019
    sc->ctts_data = av_malloc(entries * sizeof(MOV_stts_t));
1020
    if (!sc->ctts_data)
1021
        return -1;
1022
    dprintf(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
1023

    
1024
    for(i=0; i<entries; i++) {
1025
        int count    =get_be32(pb);
1026
        int duration =get_be32(pb);
1027

    
1028
        if (duration < 0) {
1029
            av_log(c->fc, AV_LOG_ERROR, "negative ctts, ignoring\n");
1030
            sc->ctts_count = 0;
1031
            url_fskip(pb, 8 * (entries - i - 1));
1032
            break;
1033
        }
1034
        sc->ctts_data[i].count   = count;
1035
        sc->ctts_data[i].duration= duration;
1036

    
1037
        sc->time_rate= ff_gcd(sc->time_rate, duration);
1038
    }
1039
    return 0;
1040
}
1041

    
1042
static int mov_read_trak(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1043
{
1044
    AVStream *st;
1045
    MOVStreamContext *sc;
1046

    
1047
    st = av_new_stream(c->fc, c->fc->nb_streams);
1048
    if (!st) return -2;
1049
    sc = av_mallocz(sizeof(MOVStreamContext));
1050
    if (!sc) {
1051
        av_free(st);
1052
        return -1;
1053
    }
1054

    
1055
    st->priv_data = sc;
1056
    st->codec->codec_type = CODEC_TYPE_DATA;
1057
    st->start_time = 0; /* XXX: check */
1058

    
1059
    return mov_read_default(c, pb, atom);
1060
}
1061

    
1062
static void mov_parse_udta_string(ByteIOContext *pb, char *str, int size)
1063
{
1064
    uint16_t str_size = get_be16(pb); /* string length */;
1065

    
1066
    get_be16(pb); /* skip language */
1067
    get_buffer(pb, str, FFMIN(size, str_size));
1068
}
1069

    
1070
static int mov_read_udta(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1071
{
1072
    uint64_t end = url_ftell(pb) + atom.size;
1073

    
1074
    while (url_ftell(pb) + 8 < end) {
1075
        uint32_t tag_size = get_be32(pb);
1076
        uint32_t tag      = get_le32(pb);
1077
        uint64_t next     = url_ftell(pb) + tag_size - 8;
1078

    
1079
        if (next > end) // stop if tag_size is wrong
1080
            break;
1081

    
1082
        switch (tag) {
1083
        case MKTAG(0xa9,'n','a','m'):
1084
            mov_parse_udta_string(pb, c->fc->title,     sizeof(c->fc->title));
1085
            break;
1086
        case MKTAG(0xa9,'w','r','t'):
1087
            mov_parse_udta_string(pb, c->fc->author,    sizeof(c->fc->author));
1088
            break;
1089
        case MKTAG(0xa9,'c','p','y'):
1090
            mov_parse_udta_string(pb, c->fc->copyright, sizeof(c->fc->copyright));
1091
            break;
1092
        case MKTAG(0xa9,'i','n','f'):
1093
            mov_parse_udta_string(pb, c->fc->comment,   sizeof(c->fc->comment));
1094
            break;
1095
        default:
1096
            break;
1097
        }
1098

    
1099
        url_fseek(pb, next, SEEK_SET);
1100
    }
1101

    
1102
    return 0;
1103
}
1104

    
1105
static int mov_read_tkhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1106
{
1107
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1108
    int version = get_byte(pb);
1109

    
1110
    get_byte(pb); get_byte(pb);
1111
    get_byte(pb); /* flags */
1112
    /*
1113
    MOV_TRACK_ENABLED 0x0001
1114
    MOV_TRACK_IN_MOVIE 0x0002
1115
    MOV_TRACK_IN_PREVIEW 0x0004
1116
    MOV_TRACK_IN_POSTER 0x0008
1117
    */
1118

    
1119
    if (version == 1) {
1120
        get_be64(pb);
1121
        get_be64(pb);
1122
    } else {
1123
        get_be32(pb); /* creation time */
1124
        get_be32(pb); /* modification time */
1125
    }
1126
    st->id = (int)get_be32(pb); /* track id (NOT 0 !)*/
1127
    get_be32(pb); /* reserved */
1128
    st->start_time = 0; /* check */
1129
    (version == 1) ? get_be64(pb) : get_be32(pb); /* highlevel (considering edits) duration in movie timebase */
1130
    get_be32(pb); /* reserved */
1131
    get_be32(pb); /* reserved */
1132

    
1133
    get_be16(pb); /* layer */
1134
    get_be16(pb); /* alternate group */
1135
    get_be16(pb); /* volume */
1136
    get_be16(pb); /* reserved */
1137

    
1138
    url_fskip(pb, 36); /* display matrix */
1139

    
1140
    /* those are fixed-point */
1141
    get_be32(pb); /* track width */
1142
    get_be32(pb); /* track height */
1143

    
1144
    return 0;
1145
}
1146

    
1147
/* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
1148
/* like the files created with Adobe Premiere 5.0, for samples see */
1149
/* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
1150
static int mov_read_wide(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1151
{
1152
    int err;
1153

    
1154
    if (atom.size < 8)
1155
        return 0; /* continue */
1156
    if (get_be32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
1157
        url_fskip(pb, atom.size - 4);
1158
        return 0;
1159
    }
1160
    atom.type = get_le32(pb);
1161
    atom.offset += 8;
1162
    atom.size -= 8;
1163
    if (atom.type != MKTAG('m', 'd', 'a', 't')) {
1164
        url_fskip(pb, atom.size);
1165
        return 0;
1166
    }
1167
    err = mov_read_mdat(c, pb, atom);
1168
    return err;
1169
}
1170

    
1171
static int mov_read_cmov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1172
{
1173
#ifdef CONFIG_ZLIB
1174
    ByteIOContext ctx;
1175
    uint8_t *cmov_data;
1176
    uint8_t *moov_data; /* uncompressed data */
1177
    long cmov_len, moov_len;
1178
    int ret;
1179

    
1180
    get_be32(pb); /* dcom atom */
1181
    if (get_le32(pb) != MKTAG( 'd', 'c', 'o', 'm' ))
1182
        return -1;
1183
    if (get_le32(pb) != MKTAG( 'z', 'l', 'i', 'b' )) {
1184
        av_log(NULL, AV_LOG_ERROR, "unknown compression for cmov atom !");
1185
        return -1;
1186
    }
1187
    get_be32(pb); /* cmvd atom */
1188
    if (get_le32(pb) != MKTAG( 'c', 'm', 'v', 'd' ))
1189
        return -1;
1190
    moov_len = get_be32(pb); /* uncompressed size */
1191
    cmov_len = atom.size - 6 * 4;
1192

    
1193
    cmov_data = av_malloc(cmov_len);
1194
    if (!cmov_data)
1195
        return -1;
1196
    moov_data = av_malloc(moov_len);
1197
    if (!moov_data) {
1198
        av_free(cmov_data);
1199
        return -1;
1200
    }
1201
    get_buffer(pb, cmov_data, cmov_len);
1202
    if(uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
1203
        return -1;
1204
    if(init_put_byte(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
1205
        return -1;
1206
    atom.type = MKTAG( 'm', 'o', 'o', 'v' );
1207
    atom.offset = 0;
1208
    atom.size = moov_len;
1209
#ifdef DEBUG
1210
//    { int fd = open("/tmp/uncompheader.mov", O_WRONLY | O_CREAT); write(fd, moov_data, moov_len); close(fd); }
1211
#endif
1212
    ret = mov_read_default(c, &ctx, atom);
1213
    av_free(moov_data);
1214
    av_free(cmov_data);
1215
    return ret;
1216
#else
1217
    av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
1218
    return -1;
1219
#endif
1220
}
1221

    
1222
/* edit list atom */
1223
static int mov_read_elst(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1224
{
1225
    MOVStreamContext *sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
1226
    int i, edit_count;
1227

    
1228
    get_byte(pb); /* version */
1229
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1230
    edit_count= sc->edit_count = get_be32(pb);     /* entries */
1231

    
1232
    for(i=0; i<edit_count; i++){
1233
        get_be32(pb); /* Track duration */
1234
        get_be32(pb); /* Media time */
1235
        get_be32(pb); /* Media rate */
1236
    }
1237
    dprintf(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, sc->edit_count);
1238
    return 0;
1239
}
1240

    
1241
static const MOVParseTableEntry mov_default_parse_table[] = {
1242
/* mp4 atoms */
1243
{ MKTAG( 'c', 'o', '6', '4' ), mov_read_stco },
1244
{ MKTAG( 'c', 't', 't', 's' ), mov_read_ctts }, /* composition time to sample */
1245
{ MKTAG( 'e', 'd', 't', 's' ), mov_read_default },
1246
{ MKTAG( 'e', 'l', 's', 't' ), mov_read_elst },
1247
{ MKTAG( 'e', 'n', 'd', 'a' ), mov_read_enda },
1248
{ MKTAG( 'f', 'i', 'e', 'l' ), mov_read_extradata },
1249
{ MKTAG( 'f', 't', 'y', 'p' ), mov_read_ftyp },
1250
{ MKTAG( 'g', 'l', 'b', 'l' ), mov_read_glbl },
1251
{ MKTAG( 'h', 'd', 'l', 'r' ), mov_read_hdlr },
1252
{ MKTAG( 'j', 'p', '2', 'h' ), mov_read_extradata },
1253
{ MKTAG( 'm', 'd', 'a', 't' ), mov_read_mdat },
1254
{ MKTAG( 'm', 'd', 'h', 'd' ), mov_read_mdhd },
1255
{ MKTAG( 'm', 'd', 'i', 'a' ), mov_read_default },
1256
{ MKTAG( 'm', 'i', 'n', 'f' ), mov_read_default },
1257
{ MKTAG( 'm', 'o', 'o', 'v' ), mov_read_moov },
1258
{ MKTAG( 'm', 'v', 'h', 'd' ), mov_read_mvhd },
1259
{ MKTAG( 'S', 'M', 'I', ' ' ), mov_read_smi }, /* Sorenson extension ??? */
1260
{ MKTAG( 'a', 'l', 'a', 'c' ), mov_read_extradata }, /* alac specific atom */
1261
{ MKTAG( 'a', 'v', 'c', 'C' ), mov_read_glbl },
1262
{ MKTAG( 's', 't', 'b', 'l' ), mov_read_default },
1263
{ MKTAG( 's', 't', 'c', 'o' ), mov_read_stco },
1264
{ MKTAG( 's', 't', 's', 'c' ), mov_read_stsc },
1265
{ MKTAG( 's', 't', 's', 'd' ), mov_read_stsd }, /* sample description */
1266
{ MKTAG( 's', 't', 's', 's' ), mov_read_stss }, /* sync sample */
1267
{ MKTAG( 's', 't', 's', 'z' ), mov_read_stsz }, /* sample size */
1268
{ MKTAG( 's', 't', 't', 's' ), mov_read_stts },
1269
{ MKTAG( 't', 'k', 'h', 'd' ), mov_read_tkhd }, /* track header */
1270
{ MKTAG( 't', 'r', 'a', 'k' ), mov_read_trak },
1271
{ MKTAG( 'u', 'd', 't', 'a' ), mov_read_udta },
1272
{ MKTAG( 'w', 'a', 'v', 'e' ), mov_read_wave },
1273
{ MKTAG( 'e', 's', 'd', 's' ), mov_read_esds },
1274
{ MKTAG( 'w', 'i', 'd', 'e' ), mov_read_wide }, /* place holder */
1275
{ MKTAG( 'c', 'm', 'o', 'v' ), mov_read_cmov },
1276
{ 0, NULL }
1277
};
1278

    
1279
/* XXX: is it sufficient ? */
1280
static int mov_probe(AVProbeData *p)
1281
{
1282
    unsigned int offset;
1283
    uint32_t tag;
1284
    int score = 0;
1285

    
1286
    /* check file header */
1287
    offset = 0;
1288
    for(;;) {
1289
        /* ignore invalid offset */
1290
        if ((offset + 8) > (unsigned int)p->buf_size)
1291
            return score;
1292
        tag = AV_RL32(p->buf + offset + 4);
1293
        switch(tag) {
1294
        /* check for obvious tags */
1295
        case MKTAG( 'j', 'P', ' ', ' ' ): /* jpeg 2000 signature */
1296
        case MKTAG( 'm', 'o', 'o', 'v' ):
1297
        case MKTAG( 'm', 'd', 'a', 't' ):
1298
        case MKTAG( 'p', 'n', 'o', 't' ): /* detect movs with preview pics like ew.mov and april.mov */
1299
        case MKTAG( 'u', 'd', 't', 'a' ): /* Packet Video PVAuthor adds this and a lot of more junk */
1300
            return AVPROBE_SCORE_MAX;
1301
        /* those are more common words, so rate then a bit less */
1302
        case MKTAG( 'e', 'd', 'i', 'w' ): /* xdcam files have reverted first tags */
1303
        case MKTAG( 'w', 'i', 'd', 'e' ):
1304
        case MKTAG( 'f', 'r', 'e', 'e' ):
1305
        case MKTAG( 'j', 'u', 'n', 'k' ):
1306
        case MKTAG( 'p', 'i', 'c', 't' ):
1307
            return AVPROBE_SCORE_MAX - 5;
1308
        case MKTAG( 'f', 't', 'y', 'p' ):
1309
        case MKTAG( 's', 'k', 'i', 'p' ):
1310
        case MKTAG( 'u', 'u', 'i', 'd' ):
1311
            offset = AV_RB32(p->buf+offset) + offset;
1312
            /* if we only find those cause probedata is too small at least rate them */
1313
            score = AVPROBE_SCORE_MAX - 50;
1314
            break;
1315
        default:
1316
            /* unrecognized tag */
1317
            return score;
1318
        }
1319
    }
1320
    return score;
1321
}
1322

    
1323
static void mov_build_index(MOVContext *mov, AVStream *st)
1324
{
1325
    MOVStreamContext *sc = st->priv_data;
1326
    offset_t current_offset;
1327
    int64_t current_dts = 0;
1328
    unsigned int stts_index = 0;
1329
    unsigned int stsc_index = 0;
1330
    unsigned int stss_index = 0;
1331
    unsigned int i, j;
1332

    
1333
    if (sc->sample_sizes || st->codec->codec_type == CODEC_TYPE_VIDEO ||
1334
        sc->audio_cid == -2) {
1335
        unsigned int current_sample = 0;
1336
        unsigned int stts_sample = 0;
1337
        unsigned int keyframe, sample_size;
1338
        unsigned int distance = 0;
1339

    
1340
        st->nb_frames = sc->sample_count;
1341
        for (i = 0; i < sc->chunk_count; i++) {
1342
            current_offset = sc->chunk_offsets[i];
1343
            if (stsc_index + 1 < sc->sample_to_chunk_sz &&
1344
                i + 1 == sc->sample_to_chunk[stsc_index + 1].first)
1345
                stsc_index++;
1346
            for (j = 0; j < sc->sample_to_chunk[stsc_index].count; j++) {
1347
                if (current_sample >= sc->sample_count) {
1348
                    av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
1349
                    goto out;
1350
                }
1351
                keyframe = !sc->keyframe_count || current_sample + 1 == sc->keyframes[stss_index];
1352
                if (keyframe) {
1353
                    distance = 0;
1354
                    if (stss_index + 1 < sc->keyframe_count)
1355
                        stss_index++;
1356
                }
1357
                sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
1358
                dprintf(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
1359
                        "size %d, distance %d, keyframe %d\n", st->index, current_sample,
1360
                        current_offset, current_dts, sample_size, distance, keyframe);
1361
                if(sc->sample_to_chunk[stsc_index].id - 1 == sc->pseudo_stream_id)
1362
                    av_add_index_entry(st, current_offset, current_dts, sample_size, distance,
1363
                                    keyframe ? AVINDEX_KEYFRAME : 0);
1364
                current_offset += sample_size;
1365
                assert(sc->stts_data[stts_index].duration % sc->time_rate == 0);
1366
                current_dts += sc->stts_data[stts_index].duration / sc->time_rate;
1367
                distance++;
1368
                stts_sample++;
1369
                current_sample++;
1370
                if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
1371
                    stts_sample = 0;
1372
                    stts_index++;
1373
                }
1374
            }
1375
        }
1376
    } else { /* read whole chunk */
1377
        unsigned int chunk_samples, chunk_size, chunk_duration;
1378
        unsigned int frames = 1;
1379
        for (i = 0; i < sc->chunk_count; i++) {
1380
            current_offset = sc->chunk_offsets[i];
1381
            if (stsc_index + 1 < sc->sample_to_chunk_sz &&
1382
                i + 1 == sc->sample_to_chunk[stsc_index + 1].first)
1383
                stsc_index++;
1384
            chunk_samples = sc->sample_to_chunk[stsc_index].count;
1385
            /* get chunk size */
1386
            if (sc->sample_size > 1 ||
1387
                st->codec->codec_id == CODEC_ID_PCM_U8 || st->codec->codec_id == CODEC_ID_PCM_S8)
1388
                chunk_size = chunk_samples * sc->sample_size;
1389
            else if (sc->samples_per_frame > 0 &&
1390
                     (chunk_samples * sc->bytes_per_frame % sc->samples_per_frame == 0)) {
1391
                if (sc->samples_per_frame < 1024)
1392
                    chunk_size = chunk_samples * sc->bytes_per_frame / sc->samples_per_frame;
1393
                else {
1394
                    chunk_size = sc->bytes_per_frame;
1395
                    frames = chunk_samples / sc->samples_per_frame;
1396
                    chunk_samples = sc->samples_per_frame;
1397
                }
1398
            } else {
1399
                av_log(mov->fc, AV_LOG_ERROR, "could not determine chunk size, report problem\n");
1400
                goto out;
1401
            }
1402
            for (j = 0; j < frames; j++) {
1403
            av_add_index_entry(st, current_offset, current_dts, chunk_size, 0, AVINDEX_KEYFRAME);
1404
            /* get chunk duration */
1405
            chunk_duration = 0;
1406
            while (chunk_samples > 0) {
1407
                if (chunk_samples < sc->stts_data[stts_index].count) {
1408
                    chunk_duration += sc->stts_data[stts_index].duration * chunk_samples;
1409
                    sc->stts_data[stts_index].count -= chunk_samples;
1410
                    break;
1411
                } else {
1412
                    chunk_duration += sc->stts_data[stts_index].duration * chunk_samples;
1413
                    chunk_samples -= sc->stts_data[stts_index].count;
1414
                    if (stts_index + 1 < sc->stts_count)
1415
                        stts_index++;
1416
                }
1417
            }
1418
            current_offset += sc->bytes_per_frame;
1419
            dprintf(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", size %d, "
1420
                    "duration %d\n", st->index, i, current_offset, current_dts, chunk_size, chunk_duration);
1421
            assert(chunk_duration % sc->time_rate == 0);
1422
            current_dts += chunk_duration / sc->time_rate;
1423
            }
1424
        }
1425
    }
1426
 out:
1427
    /* adjust sample count to avindex entries */
1428
    sc->sample_count = st->nb_index_entries;
1429
}
1430

    
1431
static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
1432
{
1433
    MOVContext *mov = s->priv_data;
1434
    ByteIOContext *pb = s->pb;
1435
    int i, err;
1436
    MOV_atom_t atom = { 0, 0, 0 };
1437

    
1438
    mov->fc = s;
1439

    
1440
    if(!url_is_streamed(pb)) /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
1441
        atom.size = url_fsize(pb);
1442
    else
1443
        atom.size = INT64_MAX;
1444

    
1445
    /* check MOV header */
1446
    err = mov_read_default(mov, pb, atom);
1447
    if (err<0 || (!mov->found_moov && !mov->found_mdat)) {
1448
        av_log(s, AV_LOG_ERROR, "mov: header not found !!! (err:%d, moov:%d, mdat:%d) pos:%"PRId64"\n",
1449
                err, mov->found_moov, mov->found_mdat, url_ftell(pb));
1450
        return -1;
1451
    }
1452
    dprintf(mov->fc, "on_parse_exit_offset=%d\n", (int) url_ftell(pb));
1453

    
1454
    for(i=0; i<s->nb_streams; i++) {
1455
        AVStream *st = s->streams[i];
1456
        MOVStreamContext *sc = st->priv_data;
1457
        /* sanity checks */
1458
        if(!sc->stts_count || !sc->chunk_count || !sc->sample_to_chunk_sz ||
1459
           (!sc->sample_size && !sc->sample_count)){
1460
            av_log(s, AV_LOG_ERROR, "missing mandatory atoms, broken header\n");
1461
            sc->sample_count = 0; //ignore track
1462
            continue;
1463
        }
1464
        if(!sc->time_rate)
1465
            sc->time_rate=1;
1466
        if(!sc->time_scale)
1467
            sc->time_scale= mov->time_scale;
1468
        av_set_pts_info(st, 64, sc->time_rate, sc->time_scale);
1469

    
1470
        if (st->codec->codec_type == CODEC_TYPE_AUDIO && sc->stts_count == 1)
1471
            st->codec->frame_size = sc->stts_data[0].duration;
1472

    
1473
        if(st->duration != AV_NOPTS_VALUE){
1474
            assert(st->duration % sc->time_rate == 0);
1475
            st->duration /= sc->time_rate;
1476
        }
1477
        sc->ffindex = i;
1478
        mov_build_index(mov, st);
1479
    }
1480

    
1481
    for(i=0; i<s->nb_streams; i++) {
1482
        MOVStreamContext *sc = s->streams[i]->priv_data;
1483
        /* Do not need those anymore. */
1484
        av_freep(&sc->chunk_offsets);
1485
        av_freep(&sc->sample_to_chunk);
1486
        av_freep(&sc->sample_sizes);
1487
        av_freep(&sc->keyframes);
1488
        av_freep(&sc->stts_data);
1489
    }
1490
    return 0;
1491
}
1492

    
1493
static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
1494
{
1495
    MOVContext *mov = s->priv_data;
1496
    MOVStreamContext *sc = 0;
1497
    AVIndexEntry *sample = 0;
1498
    int64_t best_dts = INT64_MAX;
1499
    int i;
1500

    
1501
    for (i = 0; i < s->nb_streams; i++) {
1502
        AVStream *st = s->streams[i];
1503
        MOVStreamContext *msc = st->priv_data;
1504
        if (st->discard != AVDISCARD_ALL && msc->current_sample < msc->sample_count) {
1505
            AVIndexEntry *current_sample = &st->index_entries[msc->current_sample];
1506
            int64_t dts = av_rescale(current_sample->timestamp * (int64_t)msc->time_rate,
1507
                                     AV_TIME_BASE, msc->time_scale);
1508
            dprintf(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
1509
            if (!sample || (url_is_streamed(s->pb) && current_sample->pos < sample->pos) ||
1510
                (!url_is_streamed(s->pb) &&
1511
                 ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
1512
                  (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))) {
1513
                sample = current_sample;
1514
                best_dts = dts;
1515
                sc = msc;
1516
            }
1517
        }
1518
    }
1519
    if (!sample)
1520
        return -1;
1521
    /* must be done just before reading, to avoid infinite loop on sample */
1522
    sc->current_sample++;
1523
    if (url_fseek(s->pb, sample->pos, SEEK_SET) != sample->pos) {
1524
        av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
1525
               sc->ffindex, sample->pos);
1526
        return -1;
1527
    }
1528
    av_get_packet(s->pb, pkt, sample->size);
1529
#ifdef CONFIG_DV_DEMUXER
1530
    if (mov->dv_demux && sc->dv_audio_container) {
1531
        dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size);
1532
        av_free(pkt->data);
1533
        pkt->size = 0;
1534
        if (dv_get_packet(mov->dv_demux, pkt) < 0)
1535
            return -1;
1536
    }
1537
#endif
1538
    pkt->stream_index = sc->ffindex;
1539
    pkt->dts = sample->timestamp;
1540
    if (sc->ctts_data) {
1541
        assert(sc->ctts_data[sc->sample_to_ctime_index].duration % sc->time_rate == 0);
1542
        pkt->pts = pkt->dts + sc->ctts_data[sc->sample_to_ctime_index].duration / sc->time_rate;
1543
        /* update ctts context */
1544
        sc->sample_to_ctime_sample++;
1545
        if (sc->sample_to_ctime_index < sc->ctts_count &&
1546
            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",
1556
            pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
1557
    return 0;
1558
}
1559

    
1560
static int mov_seek_stream(AVStream *st, int64_t timestamp, int flags)
1561
{
1562
    MOVStreamContext *sc = st->priv_data;
1563
    int sample, time_sample;
1564
    int i;
1565

    
1566
    sample = av_index_search_timestamp(st, timestamp, flags);
1567
    dprintf(st->codec, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
1568
    if (sample < 0) /* not sure what to do */
1569
        return -1;
1570
    sc->current_sample = sample;
1571
    dprintf(st->codec, "stream %d, found sample %d\n", st->index, sc->current_sample);
1572
    /* adjust ctts index */
1573
    if (sc->ctts_data) {
1574
        time_sample = 0;
1575
        for (i = 0; i < sc->ctts_count; i++) {
1576
            int next = time_sample + sc->ctts_data[i].count;
1577
            if (next > sc->current_sample) {
1578
                sc->sample_to_ctime_index = i;
1579
                sc->sample_to_ctime_sample = sc->current_sample - time_sample;
1580
                break;
1581
            }
1582
            time_sample = next;
1583
        }
1584
    }
1585
    return sample;
1586
}
1587

    
1588
static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
1589
{
1590
    AVStream *st;
1591
    int64_t seek_timestamp, timestamp;
1592
    int sample;
1593
    int i;
1594

    
1595
    if (stream_index >= s->nb_streams)
1596
        return -1;
1597

    
1598
    st = s->streams[stream_index];
1599
    sample = mov_seek_stream(st, sample_time, flags);
1600
    if (sample < 0)
1601
        return -1;
1602

    
1603
    /* adjust seek timestamp to found sample timestamp */
1604
    seek_timestamp = st->index_entries[sample].timestamp;
1605

    
1606
    for (i = 0; i < s->nb_streams; i++) {
1607
        st = s->streams[i];
1608
        if (stream_index == i || st->discard == AVDISCARD_ALL)
1609
            continue;
1610

    
1611
        timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
1612
        mov_seek_stream(st, timestamp, flags);
1613
    }
1614
    return 0;
1615
}
1616

    
1617
static int mov_read_close(AVFormatContext *s)
1618
{
1619
    int i;
1620
    MOVContext *mov = s->priv_data;
1621
    for(i=0; i<s->nb_streams; i++) {
1622
        MOVStreamContext *sc = s->streams[i]->priv_data;
1623
        av_freep(&sc->ctts_data);
1624
    }
1625
    if(mov->dv_demux){
1626
        for(i=0; i<mov->dv_fctx->nb_streams; i++){
1627
            av_freep(&mov->dv_fctx->streams[i]->codec);
1628
            av_freep(&mov->dv_fctx->streams[i]);
1629
        }
1630
        av_freep(&mov->dv_fctx);
1631
        av_freep(&mov->dv_demux);
1632
    }
1633
    return 0;
1634
}
1635

    
1636
AVInputFormat mov_demuxer = {
1637
    "mov,mp4,m4a,3gp,3g2,mj2",
1638
    "QuickTime/MPEG4/Motion JPEG 2000 format",
1639
    sizeof(MOVContext),
1640
    mov_probe,
1641
    mov_read_header,
1642
    mov_read_packet,
1643
    mov_read_close,
1644
    mov_read_seek,
1645
};