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ffmpeg / libavformat / mov.c @ 1e3c9307

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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.
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 *
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 * FFmpeg is distributed in the hope that it will be useful,
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 * 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"
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#include "riff.h"
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#include "isom.h"
29
#include "dv.h"
30

    
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#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:
50
 *  http://developer.apple.com/documentation/QuickTime/QTFF/
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 *  http://developer.apple.com/documentation/QuickTime/QTFF/qtff.pdf
52
 * 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;
80
    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
    int pseudo_stream_id;
111
} MOVStreamContext;
112

    
113
typedef struct MOVContext {
114
    AVFormatContext *fc;
115
    int time_scale;
116
    int64_t duration; /* duration of the longest track */
117
    int found_moov; /* when both 'moov' and 'mdat' sections has been found */
118
    int found_mdat; /* we suppose we have enough data to read the file */
119
    AVPaletteControl palette_control;
120
    MOV_mdat_t *mdat_list;
121
    int mdat_count;
122
    DVDemuxContext *dv_demux;
123
    AVFormatContext *dv_fctx;
124
    int isom; /* 1 if file is ISO Media (mp4/3gp) */
125
} MOVContext;
126

    
127

    
128
/* XXX: it's the first time I make a recursive parser I think... sorry if it's ugly :P */
129

    
130
/* those functions parse an atom */
131
/* return code:
132
 1: found what I wanted, exit
133
 0: continue to parse next atom
134
 -1: error occured, exit
135
 */
136
/* links atom IDs to parse functions */
137
typedef struct MOVParseTableEntry {
138
    uint32_t type;
139
    int (*parse)(MOVContext *ctx, ByteIOContext *pb, MOV_atom_t atom);
140
} MOVParseTableEntry;
141

    
142
static const MOVParseTableEntry mov_default_parse_table[];
143

    
144
static int mov_read_default(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
145
{
146
    int64_t total_size = 0;
147
    MOV_atom_t a;
148
    int i;
149
    int err = 0;
150

    
151
    a.offset = atom.offset;
152

    
153
    if (atom.size < 0)
154
        atom.size = INT64_MAX;
155
    while(((total_size + 8) < atom.size) && !url_feof(pb) && !err) {
156
        a.size = atom.size;
157
        a.type=0;
158
        if(atom.size >= 8) {
159
            a.size = get_be32(pb);
160
            a.type = get_le32(pb);
161
        }
162
        total_size += 8;
163
        a.offset += 8;
164
        dprintf(c->fc, "type: %08x  %.4s  sz: %"PRIx64"  %"PRIx64"   %"PRIx64"\n",
165
                a.type, (char*)&a.type, a.size, atom.size, total_size);
166
        if (a.size == 1) { /* 64 bit extended size */
167
            a.size = get_be64(pb) - 8;
168
            a.offset += 8;
169
            total_size += 8;
170
        }
171
        if (a.size == 0) {
172
            a.size = atom.size - total_size;
173
            if (a.size <= 8)
174
                break;
175
        }
176
        a.size -= 8;
177
        if(a.size < 0)
178
            break;
179
        a.size = FFMIN(a.size, atom.size - total_size);
180

    
181
        for (i = 0; mov_default_parse_table[i].type != 0
182
             && mov_default_parse_table[i].type != a.type; i++)
183
            /* empty */;
184

    
185
        if (mov_default_parse_table[i].type == 0) { /* skip leaf atoms data */
186
            url_fskip(pb, a.size);
187
        } else {
188
            offset_t start_pos = url_ftell(pb);
189
            int64_t left;
190
            err = mov_default_parse_table[i].parse(c, pb, a);
191
            if (c->found_moov && c->found_mdat)
192
                break;
193
            left = a.size - url_ftell(pb) + start_pos;
194
            if (left > 0) /* skip garbage at atom end */
195
                url_fskip(pb, left);
196
        }
197

    
198
        a.offset += a.size;
199
        total_size += a.size;
200
    }
201

    
202
    if (!err && total_size < atom.size && atom.size < 0x7ffff) {
203
        url_fskip(pb, atom.size - total_size);
204
    }
205

    
206
    return err;
207
}
208

    
209
static int mov_read_hdlr(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
210
{
211
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
212
    uint32_t type;
213
    uint32_t ctype;
214

    
215
    get_byte(pb); /* version */
216
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
217

    
218
    /* component type */
219
    ctype = get_le32(pb);
220
    type = get_le32(pb); /* component subtype */
221

    
222
    dprintf(c->fc, "ctype= %c%c%c%c (0x%08x)\n", *((char *)&ctype), ((char *)&ctype)[1],
223
            ((char *)&ctype)[2], ((char *)&ctype)[3], (int) ctype);
224
    dprintf(c->fc, "stype= %c%c%c%c\n",
225
            *((char *)&type), ((char *)&type)[1], ((char *)&type)[2], ((char *)&type)[3]);
226
    if(!ctype)
227
        c->isom = 1;
228
    if(type == MKTAG('v', 'i', 'd', 'e'))
229
        st->codec->codec_type = CODEC_TYPE_VIDEO;
230
    else if(type == MKTAG('s', 'o', 'u', 'n'))
231
        st->codec->codec_type = CODEC_TYPE_AUDIO;
232
    else if(type == MKTAG('m', '1', 'a', ' '))
233
        st->codec->codec_id = CODEC_ID_MP2;
234
    else if(type == MKTAG('s', 'u', 'b', 'p')) {
235
        st->codec->codec_type = CODEC_TYPE_SUBTITLE;
236
        st->codec->codec_id = CODEC_ID_DVD_SUBTITLE;
237
    }
238
    get_be32(pb); /* component  manufacture */
239
    get_be32(pb); /* component flags */
240
    get_be32(pb); /* component flags mask */
241

    
242
    if(atom.size <= 24)
243
        return 0; /* nothing left to read */
244

    
245
    url_fskip(pb, atom.size - (url_ftell(pb) - atom.offset));
246
    return 0;
247
}
248

    
249
static int mp4_read_descr_len(ByteIOContext *pb)
250
{
251
    int len = 0;
252
    int count = 4;
253
    while (count--) {
254
        int c = get_byte(pb);
255
        len = (len << 7) | (c & 0x7f);
256
        if (!(c & 0x80))
257
            break;
258
    }
259
    return len;
260
}
261

    
262
static int mp4_read_descr(MOVContext *c, ByteIOContext *pb, int *tag)
263
{
264
    int len;
265
    *tag = get_byte(pb);
266
    len = mp4_read_descr_len(pb);
267
    dprintf(c->fc, "MPEG4 description: tag=0x%02x len=%d\n", *tag, len);
268
    return len;
269
}
270

    
271
#define MP4ESDescrTag                   0x03
272
#define MP4DecConfigDescrTag            0x04
273
#define MP4DecSpecificDescrTag          0x05
274

    
275
static int mov_read_esds(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
276
{
277
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
278
    int tag, len;
279

    
280
    get_be32(pb); /* version + flags */
281
    len = mp4_read_descr(c, pb, &tag);
282
    if (tag == MP4ESDescrTag) {
283
        get_be16(pb); /* ID */
284
        get_byte(pb); /* priority */
285
    } else
286
        get_be16(pb); /* ID */
287

    
288
    len = mp4_read_descr(c, pb, &tag);
289
    if (tag == MP4DecConfigDescrTag) {
290
        int object_type_id = get_byte(pb);
291
        get_byte(pb); /* stream type */
292
        get_be24(pb); /* buffer size db */
293
        get_be32(pb); /* max bitrate */
294
        get_be32(pb); /* avg bitrate */
295

    
296
        st->codec->codec_id= codec_get_id(ff_mp4_obj_type, object_type_id);
297
        dprintf(c->fc, "esds object type id %d\n", object_type_id);
298
        len = mp4_read_descr(c, pb, &tag);
299
        if (tag == MP4DecSpecificDescrTag) {
300
            dprintf(c->fc, "Specific MPEG4 header len=%d\n", len);
301
            st->codec->extradata = av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
302
            if (st->codec->extradata) {
303
                get_buffer(pb, st->codec->extradata, len);
304
                st->codec->extradata_size = len;
305
                /* from mplayer */
306
                if ((*st->codec->extradata >> 3) == 29) {
307
                    st->codec->codec_id = CODEC_ID_MP3ON4;
308
                }
309
            }
310
        }
311
    }
312
    return 0;
313
}
314

    
315
/* this atom contains actual media data */
316
static int mov_read_mdat(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
317
{
318
    if(atom.size == 0) /* wrong one (MP4) */
319
        return 0;
320
    c->mdat_list = av_realloc(c->mdat_list, (c->mdat_count + 1) * sizeof(*c->mdat_list));
321
    c->mdat_list[c->mdat_count].offset = atom.offset;
322
    c->mdat_list[c->mdat_count].size = atom.size;
323
    c->mdat_count++;
324
    c->found_mdat=1;
325
    if(c->found_moov)
326
        return 1; /* found both, just go */
327
    url_fskip(pb, atom.size);
328
    return 0; /* now go for moov */
329
}
330

    
331
static int mov_read_ftyp(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
332
{
333
    uint32_t type = get_le32(pb);
334

    
335
    if (type != MKTAG('q','t',' ',' '))
336
        c->isom = 1;
337
    av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
338
    get_be32(pb); /* minor version */
339
    url_fskip(pb, atom.size - 8);
340
    return 0;
341
}
342

    
343
/* this atom should contain all header atoms */
344
static int mov_read_moov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
345
{
346
    if (mov_read_default(c, pb, atom) < 0)
347
        return -1;
348
    /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
349
    /* so we don't parse the whole file if over a network */
350
    c->found_moov=1;
351
    if(c->found_mdat)
352
        return 1; /* found both, just go */
353
    return 0; /* now go for mdat */
354
}
355

    
356

    
357
static int mov_read_mdhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
358
{
359
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
360
    MOVStreamContext *sc = st->priv_data;
361
    int version = get_byte(pb);
362
    int lang;
363

    
364
    if (version > 1)
365
        return 1; /* unsupported */
366

    
367
    get_byte(pb); get_byte(pb);
368
    get_byte(pb); /* flags */
369

    
370
    if (version == 1) {
371
        get_be64(pb);
372
        get_be64(pb);
373
    } else {
374
        get_be32(pb); /* creation time */
375
        get_be32(pb); /* modification time */
376
    }
377

    
378
    sc->time_scale = get_be32(pb);
379
    st->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
380

    
381
    lang = get_be16(pb); /* language */
382
    ff_mov_lang_to_iso639(lang, st->language);
383
    get_be16(pb); /* quality */
384

    
385
    return 0;
386
}
387

    
388
static int mov_read_mvhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
389
{
390
    int version = get_byte(pb); /* version */
391
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
392

    
393
    if (version == 1) {
394
        get_be64(pb);
395
        get_be64(pb);
396
    } else {
397
        get_be32(pb); /* creation time */
398
        get_be32(pb); /* modification time */
399
    }
400
    c->time_scale = get_be32(pb); /* time scale */
401

    
402
    dprintf(c->fc, "time scale = %i\n", c->time_scale);
403

    
404
    c->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
405
    get_be32(pb); /* preferred scale */
406

    
407
    get_be16(pb); /* preferred volume */
408

    
409
    url_fskip(pb, 10); /* reserved */
410

    
411
    url_fskip(pb, 36); /* display matrix */
412

    
413
    get_be32(pb); /* preview time */
414
    get_be32(pb); /* preview duration */
415
    get_be32(pb); /* poster time */
416
    get_be32(pb); /* selection time */
417
    get_be32(pb); /* selection duration */
418
    get_be32(pb); /* current time */
419
    get_be32(pb); /* next track ID */
420

    
421
    return 0;
422
}
423

    
424
static int mov_read_smi(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
425
{
426
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
427

    
428
    if((uint64_t)atom.size > (1<<30))
429
        return -1;
430

    
431
    // currently SVQ3 decoder expect full STSD header - so let's fake it
432
    // this should be fixed and just SMI header should be passed
433
    av_free(st->codec->extradata);
434
    st->codec->extradata_size = 0x5a + atom.size;
435
    st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
436

    
437
    if (st->codec->extradata) {
438
        memcpy(st->codec->extradata, "SVQ3", 4); // fake
439
        get_buffer(pb, st->codec->extradata + 0x5a, atom.size);
440
        dprintf(c->fc, "Reading SMI %"PRId64"  %s\n", atom.size, st->codec->extradata + 0x5a);
441
    } else
442
        url_fskip(pb, atom.size);
443

    
444
    return 0;
445
}
446

    
447
static int mov_read_enda(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
448
{
449
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
450
    int little_endian = get_be16(pb);
451

    
452
    if (little_endian) {
453
        switch (st->codec->codec_id) {
454
        case CODEC_ID_PCM_S24BE:
455
            st->codec->codec_id = CODEC_ID_PCM_S24LE;
456
            break;
457
        case CODEC_ID_PCM_S32BE:
458
            st->codec->codec_id = CODEC_ID_PCM_S32LE;
459
            break;
460
        default:
461
            break;
462
        }
463
    }
464
    return 0;
465
}
466

    
467
/* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
468
static int mov_read_extradata(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
469
{
470
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
471
    uint64_t size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
472
    uint8_t *buf;
473
    if(size > INT_MAX || (uint64_t)atom.size > INT_MAX)
474
        return -1;
475
    buf= av_realloc(st->codec->extradata, size);
476
    if(!buf)
477
        return -1;
478
    st->codec->extradata= buf;
479
    buf+= st->codec->extradata_size;
480
    st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE;
481
    AV_WB32(       buf    , atom.size + 8);
482
    AV_WL32(       buf + 4, atom.type);
483
    get_buffer(pb, buf + 8, atom.size);
484
    return 0;
485
}
486

    
487
static int mov_read_wave(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
488
{
489
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
490

    
491
    if((uint64_t)atom.size > (1<<30))
492
        return -1;
493

    
494
    if (st->codec->codec_id == CODEC_ID_QDM2) {
495
        // pass all frma atom to codec, needed at least for QDM2
496
        av_free(st->codec->extradata);
497
        st->codec->extradata_size = atom.size;
498
        st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
499

    
500
        if (st->codec->extradata) {
501
            get_buffer(pb, st->codec->extradata, atom.size);
502
        } else
503
            url_fskip(pb, atom.size);
504
    } else if (atom.size > 8) { /* to read frma, esds atoms */
505
        if (mov_read_default(c, pb, atom) < 0)
506
            return -1;
507
    } else
508
        url_fskip(pb, atom.size);
509
    return 0;
510
}
511

    
512
/**
513
 * This function reads atom content and puts data in extradata without tag
514
 * nor size unlike mov_read_extradata.
515
 */
516
static int mov_read_glbl(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
517
{
518
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
519

    
520
    if((uint64_t)atom.size > (1<<30))
521
        return -1;
522

    
523
    av_free(st->codec->extradata);
524

    
525
    st->codec->extradata_size = atom.size;
526
    st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
527

    
528
    if (st->codec->extradata) {
529
        get_buffer(pb, st->codec->extradata, atom.size);
530
    } else
531
        url_fskip(pb, atom.size);
532

    
533
    return 0;
534
}
535

    
536
static int mov_read_stco(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
537
{
538
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
539
    MOVStreamContext *sc = st->priv_data;
540
    unsigned int i, entries;
541

    
542
    get_byte(pb); /* version */
543
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
544

    
545
    entries = get_be32(pb);
546

    
547
    if(entries >= UINT_MAX/sizeof(int64_t))
548
        return -1;
549

    
550
    sc->chunk_count = entries;
551
    sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
552
    if (!sc->chunk_offsets)
553
        return -1;
554
    if (atom.type == MKTAG('s', 't', 'c', 'o')) {
555
        for(i=0; i<entries; i++) {
556
            sc->chunk_offsets[i] = get_be32(pb);
557
        }
558
    } else if (atom.type == MKTAG('c', 'o', '6', '4')) {
559
        for(i=0; i<entries; i++) {
560
            sc->chunk_offsets[i] = get_be64(pb);
561
        }
562
    } else
563
        return -1;
564

    
565
    return 0;
566
}
567

    
568
static int mov_read_stsd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
569
{
570
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
571
    MOVStreamContext *sc = st->priv_data;
572
    int entries, frames_per_sample;
573
    uint32_t format;
574
    uint8_t codec_name[32];
575

    
576
    /* for palette traversal */
577
    unsigned int color_depth;
578
    unsigned int color_start;
579
    unsigned int color_count;
580
    unsigned int color_end;
581
    int color_index;
582
    int color_dec;
583
    int color_greyscale;
584
    const uint8_t *color_table;
585
    int j, pseudo_stream_id;
586
    unsigned char r, g, b;
587

    
588
    get_byte(pb); /* version */
589
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
590

    
591
    entries = get_be32(pb);
592

    
593
    for(pseudo_stream_id=0; pseudo_stream_id<entries; pseudo_stream_id++) { //Parsing Sample description table
594
        enum CodecID id;
595
        MOV_atom_t a = { 0, 0, 0 };
596
        offset_t start_pos = url_ftell(pb);
597
        int size = get_be32(pb); /* size */
598
        format = get_le32(pb); /* data format */
599

    
600
        get_be32(pb); /* reserved */
601
        get_be16(pb); /* reserved */
602
        get_be16(pb); /* index */
603

    
604
        if (st->codec->codec_tag && st->codec->codec_tag != MKTAG('j', 'p', 'e', 'g')) {
605
            /* multiple fourcc, we skip jpeg, this isnt correct, we should export it as
606
               seperate AVStream but this needs a few changes in the mov demuxer, patch
607
               welcome */
608
            url_fskip(pb, size - (url_ftell(pb) - start_pos));
609
            continue;
610
        }
611
        sc->pseudo_stream_id= pseudo_stream_id;
612

    
613
        st->codec->codec_tag = format;
614
        id = codec_get_id(codec_movaudio_tags, format);
615
        if (id<=0 && (format&0xFFFF) == 'm' + ('s'<<8))
616
            id = codec_get_id(codec_wav_tags, bswap_32(format)&0xFFFF);
617

    
618
        if (st->codec->codec_type != CODEC_TYPE_VIDEO && id > 0) {
619
            st->codec->codec_type = CODEC_TYPE_AUDIO;
620
        } else if (st->codec->codec_type != CODEC_TYPE_AUDIO && /* do not overwrite codec type */
621
                   format && format != MKTAG('m', 'p', '4', 's')) { /* skip old asf mpeg4 tag */
622
            id = codec_get_id(codec_movvideo_tags, format);
623
            if (id <= 0)
624
                id = codec_get_id(codec_bmp_tags, format);
625
            if (id > 0)
626
                st->codec->codec_type = CODEC_TYPE_VIDEO;
627
            else if(st->codec->codec_type == CODEC_TYPE_DATA){
628
                id = codec_get_id(ff_codec_movsubtitle_tags, format);
629
                if(id > 0)
630
                    st->codec->codec_type = CODEC_TYPE_SUBTITLE;
631
            }
632
        }
633

    
634
        dprintf(c->fc, "size=%d 4CC= %c%c%c%c codec_type=%d\n", size,
635
                (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff,
636
                (format >> 24) & 0xff, st->codec->codec_type);
637

    
638
        if(st->codec->codec_type==CODEC_TYPE_VIDEO) {
639
            st->codec->codec_id = id;
640
            get_be16(pb); /* version */
641
            get_be16(pb); /* revision level */
642
            get_be32(pb); /* vendor */
643
            get_be32(pb); /* temporal quality */
644
            get_be32(pb); /* spatial quality */
645

    
646
            st->codec->width = get_be16(pb); /* width */
647
            st->codec->height = get_be16(pb); /* height */
648

    
649
            get_be32(pb); /* horiz resolution */
650
            get_be32(pb); /* vert resolution */
651
            get_be32(pb); /* data size, always 0 */
652
            frames_per_sample = get_be16(pb); /* frames per samples */
653

    
654
            dprintf(c->fc, "frames/samples = %d\n", frames_per_sample);
655

    
656
            get_buffer(pb, codec_name, 32); /* codec name, pascal string (FIXME: true for mp4?) */
657
            if (codec_name[0] <= 31) {
658
                memcpy(st->codec->codec_name, &codec_name[1],codec_name[0]);
659
                st->codec->codec_name[codec_name[0]] = 0;
660
            }
661

    
662
            st->codec->bits_per_sample = get_be16(pb); /* depth */
663
            st->codec->color_table_id = get_be16(pb); /* colortable id */
664

    
665
            /* figure out the palette situation */
666
            color_depth = st->codec->bits_per_sample & 0x1F;
667
            color_greyscale = st->codec->bits_per_sample & 0x20;
668

    
669
            /* if the depth is 2, 4, or 8 bpp, file is palettized */
670
            if ((color_depth == 2) || (color_depth == 4) ||
671
                (color_depth == 8)) {
672
                if (color_greyscale) {
673
                    /* compute the greyscale palette */
674
                    color_count = 1 << color_depth;
675
                    color_index = 255;
676
                    color_dec = 256 / (color_count - 1);
677
                    for (j = 0; j < color_count; j++) {
678
                        r = g = b = color_index;
679
                        c->palette_control.palette[j] =
680
                            (r << 16) | (g << 8) | (b);
681
                        color_index -= color_dec;
682
                        if (color_index < 0)
683
                            color_index = 0;
684
                    }
685
                } else if (st->codec->color_table_id & 0x08) {
686
                    /* if flag bit 3 is set, use the default palette */
687
                    color_count = 1 << color_depth;
688
                    if (color_depth == 2)
689
                        color_table = ff_qt_default_palette_4;
690
                    else if (color_depth == 4)
691
                        color_table = ff_qt_default_palette_16;
692
                    else
693
                        color_table = ff_qt_default_palette_256;
694

    
695
                    for (j = 0; j < color_count; j++) {
696
                        r = color_table[j * 4 + 0];
697
                        g = color_table[j * 4 + 1];
698
                        b = color_table[j * 4 + 2];
699
                        c->palette_control.palette[j] =
700
                            (r << 16) | (g << 8) | (b);
701
                    }
702
                } else {
703
                    /* load the palette from the file */
704
                    color_start = get_be32(pb);
705
                    color_count = get_be16(pb);
706
                    color_end = get_be16(pb);
707
                    if ((color_start <= 255) &&
708
                        (color_end <= 255)) {
709
                        for (j = color_start; j <= color_end; j++) {
710
                            /* each R, G, or B component is 16 bits;
711
                             * only use the top 8 bits; skip alpha bytes
712
                             * up front */
713
                            get_byte(pb);
714
                            get_byte(pb);
715
                            r = get_byte(pb);
716
                            get_byte(pb);
717
                            g = get_byte(pb);
718
                            get_byte(pb);
719
                            b = get_byte(pb);
720
                            get_byte(pb);
721
                            c->palette_control.palette[j] =
722
                                (r << 16) | (g << 8) | (b);
723
                        }
724
                    }
725
                }
726
                st->codec->palctrl = &c->palette_control;
727
                st->codec->palctrl->palette_changed = 1;
728
            } else
729
                st->codec->palctrl = NULL;
730
        } else if(st->codec->codec_type==CODEC_TYPE_AUDIO) {
731
            int bits_per_sample;
732
            uint16_t version = get_be16(pb);
733

    
734
            st->codec->codec_id = id;
735
            get_be16(pb); /* revision level */
736
            get_be32(pb); /* vendor */
737

    
738
            st->codec->channels = get_be16(pb);             /* channel count */
739
            dprintf(c->fc, "audio channels %d\n", st->codec->channels);
740
            st->codec->bits_per_sample = get_be16(pb);      /* sample size */
741
            /* do we need to force to 16 for AMR ? */
742

    
743
            /* handle specific s8 codec */
744
            get_be16(pb); /* compression id = 0*/
745
            get_be16(pb); /* packet size = 0 */
746

    
747
            st->codec->sample_rate = ((get_be32(pb) >> 16));
748

    
749
            switch (st->codec->codec_id) {
750
            case CODEC_ID_PCM_S8:
751
            case CODEC_ID_PCM_U8:
752
                if (st->codec->bits_per_sample == 16)
753
                    st->codec->codec_id = CODEC_ID_PCM_S16BE;
754
                break;
755
            case CODEC_ID_PCM_S16LE:
756
            case CODEC_ID_PCM_S16BE:
757
                if (st->codec->bits_per_sample == 8)
758
                    st->codec->codec_id = CODEC_ID_PCM_S8;
759
                else if (st->codec->bits_per_sample == 24)
760
                    st->codec->codec_id = CODEC_ID_PCM_S24BE;
761
                break;
762
            default:
763
                break;
764
            }
765

    
766
            //Read QT version 1 fields. In version 0 these do not exist.
767
            dprintf(c->fc, "version =%d, isom =%d\n",version,c->isom);
768
            if(!c->isom) {
769
                if(version==1) {
770
                    sc->samples_per_frame = get_be32(pb);
771
                    get_be32(pb); /* bytes per packet */
772
                    sc->bytes_per_frame = get_be32(pb);
773
                    get_be32(pb); /* bytes per sample */
774
                } else if(version==2) {
775
                    get_be32(pb); /* sizeof struct only */
776
                    st->codec->sample_rate = av_int2dbl(get_be64(pb)); /* float 64 */
777
                    st->codec->channels = get_be32(pb);
778
                    get_be32(pb); /* always 0x7F000000 */
779
                    get_be32(pb); /* bits per channel if sound is uncompressed */
780
                    get_be32(pb); /* lcpm format specific flag */
781
                    get_be32(pb); /* bytes per audio packet if constant */
782
                    get_be32(pb); /* lpcm frames per audio packet if constant */
783
                }
784
            }
785

    
786
            bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
787
            if (bits_per_sample) {
788
                st->codec->bits_per_sample = bits_per_sample;
789
                sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
790
            }
791
        } else {
792
            /* other codec type, just skip (rtp, mp4s, tmcd ...) */
793
            url_fskip(pb, size - (url_ftell(pb) - start_pos));
794
        }
795
        /* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */
796
        a.size = size - (url_ftell(pb) - start_pos);
797
        if (a.size > 8) {
798
            if (mov_read_default(c, pb, a) < 0)
799
                return -1;
800
        } else if (a.size > 0)
801
            url_fskip(pb, a.size);
802
    }
803

    
804
    if(st->codec->codec_type==CODEC_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1) {
805
        st->codec->sample_rate= sc->time_scale;
806
    }
807

    
808
    /* special codec parameters handling */
809
    switch (st->codec->codec_id) {
810
#ifdef CONFIG_H261_DECODER
811
    case CODEC_ID_H261:
812
#endif
813
#ifdef CONFIG_H263_DECODER
814
    case CODEC_ID_H263:
815
#endif
816
#ifdef CONFIG_MPEG4_DECODER
817
    case CODEC_ID_MPEG4:
818
#endif
819
        st->codec->width= 0; /* let decoder init width/height */
820
        st->codec->height= 0;
821
        break;
822
#ifdef CONFIG_LIBFAAD
823
    case CODEC_ID_AAC:
824
#endif
825
#ifdef CONFIG_VORBIS_DECODER
826
    case CODEC_ID_VORBIS:
827
#endif
828
    case CODEC_ID_MP3ON4:
829
        st->codec->sample_rate= 0; /* let decoder init parameters properly */
830
        break;
831
#ifdef CONFIG_DV_DEMUXER
832
    case CODEC_ID_DVAUDIO:
833
        c->dv_fctx = av_alloc_format_context();
834
        c->dv_demux = dv_init_demux(c->dv_fctx);
835
        if (!c->dv_demux) {
836
            av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
837
            return -1;
838
        }
839
        sc->dv_audio_container = 1;
840
        st->codec->codec_id = CODEC_ID_PCM_S16LE;
841
        break;
842
#endif
843
    /* no ifdef since parameters are always those */
844
    case CODEC_ID_AMR_WB:
845
        st->codec->sample_rate= 16000;
846
        st->codec->channels= 1; /* really needed */
847
        break;
848
    case CODEC_ID_AMR_NB:
849
        st->codec->sample_rate= 8000;
850
        st->codec->channels= 1; /* really needed */
851
        break;
852
    case CODEC_ID_MP2:
853
    case CODEC_ID_MP3:
854
        st->codec->codec_type = CODEC_TYPE_AUDIO; /* force type after stsd for m1a hdlr */
855
        st->need_parsing = AVSTREAM_PARSE_FULL;
856
        break;
857
    case CODEC_ID_ADPCM_MS:
858
    case CODEC_ID_ADPCM_IMA_WAV:
859
        st->codec->block_align = sc->bytes_per_frame;
860
        break;
861
    default:
862
        break;
863
    }
864

    
865
    return 0;
866
}
867

    
868
static int mov_read_stsc(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
869
{
870
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
871
    MOVStreamContext *sc = st->priv_data;
872
    unsigned int i, entries;
873

    
874
    get_byte(pb); /* version */
875
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
876

    
877
    entries = get_be32(pb);
878

    
879
    if(entries >= UINT_MAX / sizeof(MOV_stsc_t))
880
        return -1;
881

    
882
    dprintf(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
883

    
884
    sc->sample_to_chunk_sz = entries;
885
    sc->sample_to_chunk = av_malloc(entries * sizeof(MOV_stsc_t));
886
    if (!sc->sample_to_chunk)
887
        return -1;
888
    for(i=0; i<entries; i++) {
889
        sc->sample_to_chunk[i].first = get_be32(pb);
890
        sc->sample_to_chunk[i].count = get_be32(pb);
891
        sc->sample_to_chunk[i].id = get_be32(pb);
892
    }
893
    return 0;
894
}
895

    
896
static int mov_read_stss(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
897
{
898
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
899
    MOVStreamContext *sc = st->priv_data;
900
    unsigned int i, entries;
901

    
902
    get_byte(pb); /* version */
903
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
904

    
905
    entries = get_be32(pb);
906

    
907
    if(entries >= UINT_MAX / sizeof(int))
908
        return -1;
909

    
910
    sc->keyframe_count = entries;
911

    
912
    dprintf(c->fc, "keyframe_count = %d\n", sc->keyframe_count);
913

    
914
    sc->keyframes = av_malloc(entries * sizeof(int));
915
    if (!sc->keyframes)
916
        return -1;
917
    for(i=0; i<entries; i++) {
918
        sc->keyframes[i] = get_be32(pb);
919
        //dprintf(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
920
    }
921
    return 0;
922
}
923

    
924
static int mov_read_stsz(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
925
{
926
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
927
    MOVStreamContext *sc = st->priv_data;
928
    unsigned int i, entries, sample_size;
929

    
930
    get_byte(pb); /* version */
931
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
932

    
933
    sample_size = get_be32(pb);
934
    if (!sc->sample_size) /* do not overwrite value computed in stsd */
935
        sc->sample_size = sample_size;
936
    entries = get_be32(pb);
937
    if(entries >= UINT_MAX / sizeof(int))
938
        return -1;
939

    
940
    sc->sample_count = entries;
941
    if (sample_size)
942
        return 0;
943

    
944
    dprintf(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, sc->sample_count);
945

    
946
    sc->sample_sizes = av_malloc(entries * sizeof(int));
947
    if (!sc->sample_sizes)
948
        return -1;
949
    for(i=0; i<entries; i++) {
950
        sc->sample_sizes[i] = get_be32(pb);
951
        dprintf(c->fc, "sample_sizes[]=%d\n", sc->sample_sizes[i]);
952
    }
953
    return 0;
954
}
955

    
956
static int mov_read_stts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
957
{
958
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
959
    MOVStreamContext *sc = st->priv_data;
960
    unsigned int i, entries;
961
    int64_t duration=0;
962
    int64_t total_sample_count=0;
963

    
964
    get_byte(pb); /* version */
965
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
966
    entries = get_be32(pb);
967
    if(entries >= UINT_MAX / sizeof(MOV_stts_t))
968
        return -1;
969

    
970
    sc->stts_count = entries;
971
    sc->stts_data = av_malloc(entries * sizeof(MOV_stts_t));
972
    if (!sc->stts_data)
973
        return -1;
974
    dprintf(c->fc, "track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries);
975

    
976
    sc->time_rate=0;
977

    
978
    for(i=0; i<entries; i++) {
979
        int sample_duration;
980
        int sample_count;
981

    
982
        sample_count=get_be32(pb);
983
        sample_duration = get_be32(pb);
984
        sc->stts_data[i].count= sample_count;
985
        sc->stts_data[i].duration= sample_duration;
986

    
987
        sc->time_rate= ff_gcd(sc->time_rate, sample_duration);
988

    
989
        dprintf(c->fc, "sample_count=%d, sample_duration=%d\n",sample_count,sample_duration);
990

    
991
        duration+=(int64_t)sample_duration*sample_count;
992
        total_sample_count+=sample_count;
993
    }
994

    
995
    st->nb_frames= total_sample_count;
996
    if(duration)
997
        st->duration= duration;
998
    return 0;
999
}
1000

    
1001
static int mov_read_ctts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1002
{
1003
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1004
    MOVStreamContext *sc = st->priv_data;
1005
    unsigned int i, entries;
1006

    
1007
    get_byte(pb); /* version */
1008
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1009
    entries = get_be32(pb);
1010
    if(entries >= UINT_MAX / sizeof(MOV_stts_t))
1011
        return -1;
1012

    
1013
    sc->ctts_count = entries;
1014
    sc->ctts_data = av_malloc(entries * sizeof(MOV_stts_t));
1015
    if (!sc->ctts_data)
1016
        return -1;
1017
    dprintf(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
1018

    
1019
    for(i=0; i<entries; i++) {
1020
        int count    =get_be32(pb);
1021
        int duration =get_be32(pb);
1022

    
1023
        if (duration < 0) {
1024
            av_log(c->fc, AV_LOG_ERROR, "negative ctts, ignoring\n");
1025
            sc->ctts_count = 0;
1026
            url_fskip(pb, 8 * (entries - i - 1));
1027
            break;
1028
        }
1029
        sc->ctts_data[i].count   = count;
1030
        sc->ctts_data[i].duration= duration;
1031

    
1032
        sc->time_rate= ff_gcd(sc->time_rate, duration);
1033
    }
1034
    return 0;
1035
}
1036

    
1037
static int mov_read_trak(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1038
{
1039
    AVStream *st;
1040
    MOVStreamContext *sc;
1041

    
1042
    st = av_new_stream(c->fc, c->fc->nb_streams);
1043
    if (!st) return -2;
1044
    sc = av_mallocz(sizeof(MOVStreamContext));
1045
    if (!sc) {
1046
        av_free(st);
1047
        return -1;
1048
    }
1049

    
1050
    st->priv_data = sc;
1051
    st->codec->codec_type = CODEC_TYPE_DATA;
1052
    st->start_time = 0; /* XXX: check */
1053

    
1054
    return mov_read_default(c, pb, atom);
1055
}
1056

    
1057
static void mov_parse_udta_string(ByteIOContext *pb, char *str, int size)
1058
{
1059
    uint16_t str_size = get_be16(pb); /* string length */;
1060

    
1061
    get_be16(pb); /* skip language */
1062
    get_buffer(pb, str, FFMIN(size, str_size));
1063
}
1064

    
1065
static int mov_read_udta(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1066
{
1067
    uint64_t end = url_ftell(pb) + atom.size;
1068

    
1069
    while (url_ftell(pb) + 8 < end) {
1070
        uint32_t tag_size = get_be32(pb);
1071
        uint32_t tag      = get_le32(pb);
1072
        uint64_t next     = url_ftell(pb) + tag_size - 8;
1073

    
1074
        if (next > end) // stop if tag_size is wrong
1075
            break;
1076

    
1077
        switch (tag) {
1078
        case MKTAG(0xa9,'n','a','m'):
1079
            mov_parse_udta_string(pb, c->fc->title,     sizeof(c->fc->title));
1080
            break;
1081
        case MKTAG(0xa9,'w','r','t'):
1082
            mov_parse_udta_string(pb, c->fc->author,    sizeof(c->fc->author));
1083
            break;
1084
        case MKTAG(0xa9,'c','p','y'):
1085
            mov_parse_udta_string(pb, c->fc->copyright, sizeof(c->fc->copyright));
1086
            break;
1087
        case MKTAG(0xa9,'i','n','f'):
1088
            mov_parse_udta_string(pb, c->fc->comment,   sizeof(c->fc->comment));
1089
            break;
1090
        default:
1091
            break;
1092
        }
1093

    
1094
        url_fseek(pb, next, SEEK_SET);
1095
    }
1096

    
1097
    return 0;
1098
}
1099

    
1100
static int mov_read_tkhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1101
{
1102
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1103
    int version = get_byte(pb);
1104

    
1105
    get_byte(pb); get_byte(pb);
1106
    get_byte(pb); /* flags */
1107
    /*
1108
    MOV_TRACK_ENABLED 0x0001
1109
    MOV_TRACK_IN_MOVIE 0x0002
1110
    MOV_TRACK_IN_PREVIEW 0x0004
1111
    MOV_TRACK_IN_POSTER 0x0008
1112
    */
1113

    
1114
    if (version == 1) {
1115
        get_be64(pb);
1116
        get_be64(pb);
1117
    } else {
1118
        get_be32(pb); /* creation time */
1119
        get_be32(pb); /* modification time */
1120
    }
1121
    st->id = (int)get_be32(pb); /* track id (NOT 0 !)*/
1122
    get_be32(pb); /* reserved */
1123
    st->start_time = 0; /* check */
1124
    (version == 1) ? get_be64(pb) : get_be32(pb); /* highlevel (considering edits) duration in movie timebase */
1125
    get_be32(pb); /* reserved */
1126
    get_be32(pb); /* reserved */
1127

    
1128
    get_be16(pb); /* layer */
1129
    get_be16(pb); /* alternate group */
1130
    get_be16(pb); /* volume */
1131
    get_be16(pb); /* reserved */
1132

    
1133
    url_fskip(pb, 36); /* display matrix */
1134

    
1135
    /* those are fixed-point */
1136
    get_be32(pb); /* track width */
1137
    get_be32(pb); /* track height */
1138

    
1139
    return 0;
1140
}
1141

    
1142
/* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
1143
/* like the files created with Adobe Premiere 5.0, for samples see */
1144
/* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
1145
static int mov_read_wide(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1146
{
1147
    int err;
1148

    
1149
    if (atom.size < 8)
1150
        return 0; /* continue */
1151
    if (get_be32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
1152
        url_fskip(pb, atom.size - 4);
1153
        return 0;
1154
    }
1155
    atom.type = get_le32(pb);
1156
    atom.offset += 8;
1157
    atom.size -= 8;
1158
    if (atom.type != MKTAG('m', 'd', 'a', 't')) {
1159
        url_fskip(pb, atom.size);
1160
        return 0;
1161
    }
1162
    err = mov_read_mdat(c, pb, atom);
1163
    return err;
1164
}
1165

    
1166
static int mov_read_cmov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1167
{
1168
#ifdef CONFIG_ZLIB
1169
    ByteIOContext ctx;
1170
    uint8_t *cmov_data;
1171
    uint8_t *moov_data; /* uncompressed data */
1172
    long cmov_len, moov_len;
1173
    int ret;
1174

    
1175
    get_be32(pb); /* dcom atom */
1176
    if (get_le32(pb) != MKTAG( 'd', 'c', 'o', 'm' ))
1177
        return -1;
1178
    if (get_le32(pb) != MKTAG( 'z', 'l', 'i', 'b' )) {
1179
        av_log(NULL, AV_LOG_ERROR, "unknown compression for cmov atom !");
1180
        return -1;
1181
    }
1182
    get_be32(pb); /* cmvd atom */
1183
    if (get_le32(pb) != MKTAG( 'c', 'm', 'v', 'd' ))
1184
        return -1;
1185
    moov_len = get_be32(pb); /* uncompressed size */
1186
    cmov_len = atom.size - 6 * 4;
1187

    
1188
    cmov_data = av_malloc(cmov_len);
1189
    if (!cmov_data)
1190
        return -1;
1191
    moov_data = av_malloc(moov_len);
1192
    if (!moov_data) {
1193
        av_free(cmov_data);
1194
        return -1;
1195
    }
1196
    get_buffer(pb, cmov_data, cmov_len);
1197
    if(uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
1198
        return -1;
1199
    if(init_put_byte(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
1200
        return -1;
1201
    atom.type = MKTAG( 'm', 'o', 'o', 'v' );
1202
    atom.offset = 0;
1203
    atom.size = moov_len;
1204
#ifdef DEBUG
1205
//    { int fd = open("/tmp/uncompheader.mov", O_WRONLY | O_CREAT); write(fd, moov_data, moov_len); close(fd); }
1206
#endif
1207
    ret = mov_read_default(c, &ctx, atom);
1208
    av_free(moov_data);
1209
    av_free(cmov_data);
1210
    return ret;
1211
#else
1212
    av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
1213
    return -1;
1214
#endif
1215
}
1216

    
1217
/* edit list atom */
1218
static int mov_read_elst(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1219
{
1220
    MOVStreamContext *sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
1221
    int i, edit_count;
1222

    
1223
    get_byte(pb); /* version */
1224
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1225
    edit_count= sc->edit_count = get_be32(pb);     /* entries */
1226

    
1227
    for(i=0; i<edit_count; i++){
1228
        get_be32(pb); /* Track duration */
1229
        get_be32(pb); /* Media time */
1230
        get_be32(pb); /* Media rate */
1231
    }
1232
    dprintf(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, sc->edit_count);
1233
    return 0;
1234
}
1235

    
1236
static const MOVParseTableEntry mov_default_parse_table[] = {
1237
/* mp4 atoms */
1238
{ MKTAG( 'c', 'o', '6', '4' ), mov_read_stco },
1239
{ MKTAG( 'c', 't', 't', 's' ), mov_read_ctts }, /* composition time to sample */
1240
{ MKTAG( 'e', 'd', 't', 's' ), mov_read_default },
1241
{ MKTAG( 'e', 'l', 's', 't' ), mov_read_elst },
1242
{ MKTAG( 'e', 'n', 'd', 'a' ), mov_read_enda },
1243
{ MKTAG( 'f', 'i', 'e', 'l' ), mov_read_extradata },
1244
{ MKTAG( 'f', 't', 'y', 'p' ), mov_read_ftyp },
1245
{ MKTAG( 'g', 'l', 'b', 'l' ), mov_read_glbl },
1246
{ MKTAG( 'h', 'd', 'l', 'r' ), mov_read_hdlr },
1247
{ MKTAG( 'j', 'p', '2', 'h' ), mov_read_extradata },
1248
{ MKTAG( 'm', 'd', 'a', 't' ), mov_read_mdat },
1249
{ MKTAG( 'm', 'd', 'h', 'd' ), mov_read_mdhd },
1250
{ MKTAG( 'm', 'd', 'i', 'a' ), mov_read_default },
1251
{ MKTAG( 'm', 'i', 'n', 'f' ), mov_read_default },
1252
{ MKTAG( 'm', 'o', 'o', 'v' ), mov_read_moov },
1253
{ MKTAG( 'm', 'v', 'h', 'd' ), mov_read_mvhd },
1254
{ MKTAG( 'S', 'M', 'I', ' ' ), mov_read_smi }, /* Sorenson extension ??? */
1255
{ MKTAG( 'a', 'l', 'a', 'c' ), mov_read_extradata }, /* alac specific atom */
1256
{ MKTAG( 'a', 'v', 'c', 'C' ), mov_read_glbl },
1257
{ MKTAG( 's', 't', 'b', 'l' ), mov_read_default },
1258
{ MKTAG( 's', 't', 'c', 'o' ), mov_read_stco },
1259
{ MKTAG( 's', 't', 's', 'c' ), mov_read_stsc },
1260
{ MKTAG( 's', 't', 's', 'd' ), mov_read_stsd }, /* sample description */
1261
{ MKTAG( 's', 't', 's', 's' ), mov_read_stss }, /* sync sample */
1262
{ MKTAG( 's', 't', 's', 'z' ), mov_read_stsz }, /* sample size */
1263
{ MKTAG( 's', 't', 't', 's' ), mov_read_stts },
1264
{ MKTAG( 't', 'k', 'h', 'd' ), mov_read_tkhd }, /* track header */
1265
{ MKTAG( 't', 'r', 'a', 'k' ), mov_read_trak },
1266
{ MKTAG( 'u', 'd', 't', 'a' ), mov_read_udta },
1267
{ MKTAG( 'w', 'a', 'v', 'e' ), mov_read_wave },
1268
{ MKTAG( 'e', 's', 'd', 's' ), mov_read_esds },
1269
{ MKTAG( 'w', 'i', 'd', 'e' ), mov_read_wide }, /* place holder */
1270
{ MKTAG( 'c', 'm', 'o', 'v' ), mov_read_cmov },
1271
{ 0, NULL }
1272
};
1273

    
1274
/* XXX: is it sufficient ? */
1275
static int mov_probe(AVProbeData *p)
1276
{
1277
    unsigned int offset;
1278
    uint32_t tag;
1279
    int score = 0;
1280

    
1281
    /* check file header */
1282
    offset = 0;
1283
    for(;;) {
1284
        /* ignore invalid offset */
1285
        if ((offset + 8) > (unsigned int)p->buf_size)
1286
            return score;
1287
        tag = AV_RL32(p->buf + offset + 4);
1288
        switch(tag) {
1289
        /* check for obvious tags */
1290
        case MKTAG( 'j', 'P', ' ', ' ' ): /* jpeg 2000 signature */
1291
        case MKTAG( 'm', 'o', 'o', 'v' ):
1292
        case MKTAG( 'm', 'd', 'a', 't' ):
1293
        case MKTAG( 'p', 'n', 'o', 't' ): /* detect movs with preview pics like ew.mov and april.mov */
1294
        case MKTAG( 'u', 'd', 't', 'a' ): /* Packet Video PVAuthor adds this and a lot of more junk */
1295
            return AVPROBE_SCORE_MAX;
1296
        /* those are more common words, so rate then a bit less */
1297
        case MKTAG( 'e', 'd', 'i', 'w' ): /* xdcam files have reverted first tags */
1298
        case MKTAG( 'w', 'i', 'd', 'e' ):
1299
        case MKTAG( 'f', 'r', 'e', 'e' ):
1300
        case MKTAG( 'j', 'u', 'n', 'k' ):
1301
        case MKTAG( 'p', 'i', 'c', 't' ):
1302
            return AVPROBE_SCORE_MAX - 5;
1303
        case MKTAG( 'f', 't', 'y', 'p' ):
1304
        case MKTAG( 's', 'k', 'i', 'p' ):
1305
        case MKTAG( 'u', 'u', 'i', 'd' ):
1306
            offset = AV_RB32(p->buf+offset) + offset;
1307
            /* if we only find those cause probedata is too small at least rate them */
1308
            score = AVPROBE_SCORE_MAX - 50;
1309
            break;
1310
        default:
1311
            /* unrecognized tag */
1312
            return score;
1313
        }
1314
    }
1315
    return score;
1316
}
1317

    
1318
static void mov_build_index(MOVContext *mov, AVStream *st)
1319
{
1320
    MOVStreamContext *sc = st->priv_data;
1321
    offset_t current_offset;
1322
    int64_t current_dts = 0;
1323
    unsigned int stts_index = 0;
1324
    unsigned int stsc_index = 0;
1325
    unsigned int stss_index = 0;
1326
    unsigned int i, j, k;
1327

    
1328
    if (sc->sample_sizes || st->codec->codec_type == CODEC_TYPE_VIDEO || sc->dv_audio_container) {
1329
        unsigned int current_sample = 0;
1330
        unsigned int stts_sample = 0;
1331
        unsigned int keyframe, sample_size;
1332
        unsigned int distance = 0;
1333

    
1334
        st->nb_frames = sc->sample_count;
1335
        for (i = 0; i < sc->chunk_count; i++) {
1336
            current_offset = sc->chunk_offsets[i];
1337
            if (stsc_index + 1 < sc->sample_to_chunk_sz &&
1338
                i + 1 == sc->sample_to_chunk[stsc_index + 1].first)
1339
                stsc_index++;
1340
            for (j = 0; j < sc->sample_to_chunk[stsc_index].count; j++) {
1341
                if (current_sample >= sc->sample_count) {
1342
                    av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
1343
                    goto out;
1344
                }
1345
                keyframe = !sc->keyframe_count || current_sample + 1 == sc->keyframes[stss_index];
1346
                if (keyframe) {
1347
                    distance = 0;
1348
                    if (stss_index + 1 < sc->keyframe_count)
1349
                        stss_index++;
1350
                }
1351
                sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
1352
                dprintf(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
1353
                        "size %d, distance %d, keyframe %d\n", st->index, current_sample,
1354
                        current_offset, current_dts, sample_size, distance, keyframe);
1355
                if(sc->sample_to_chunk[stsc_index].id - 1 == sc->pseudo_stream_id)
1356
                    av_add_index_entry(st, current_offset, current_dts, sample_size, distance,
1357
                                    keyframe ? AVINDEX_KEYFRAME : 0);
1358
                current_offset += sample_size;
1359
                assert(sc->stts_data[stts_index].duration % sc->time_rate == 0);
1360
                current_dts += sc->stts_data[stts_index].duration / sc->time_rate;
1361
                distance++;
1362
                stts_sample++;
1363
                current_sample++;
1364
                if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
1365
                    stts_sample = 0;
1366
                    stts_index++;
1367
                }
1368
            }
1369
        }
1370
    } else { /* read whole chunk */
1371
        unsigned int chunk_samples, chunk_size, chunk_duration;
1372
        for (i = 0; i < sc->chunk_count; i++) {
1373
            current_offset = sc->chunk_offsets[i];
1374
            if (stsc_index + 1 < sc->sample_to_chunk_sz &&
1375
                i + 1 == sc->sample_to_chunk[stsc_index + 1].first)
1376
                stsc_index++;
1377
            chunk_samples = sc->sample_to_chunk[stsc_index].count;
1378
            /* get chunk size */
1379
            if (sc->sample_size > 1 ||
1380
                st->codec->codec_id == CODEC_ID_PCM_U8 || st->codec->codec_id == CODEC_ID_PCM_S8)
1381
                chunk_size = chunk_samples * sc->sample_size;
1382
            else if (sc->samples_per_frame > 0 &&
1383
                     (chunk_samples * sc->bytes_per_frame % sc->samples_per_frame == 0))
1384
                chunk_size = chunk_samples * sc->bytes_per_frame / sc->samples_per_frame;
1385
            else { /* workaround to find nearest next chunk offset */
1386
                chunk_size = INT_MAX;
1387
                for (j = 0; j < mov->fc->nb_streams; j++) {
1388
                    MOVStreamContext *msc = mov->fc->streams[j]->priv_data;
1389
                    for (k = msc->next_chunk; k < msc->chunk_count; k++) {
1390
                        if (msc->chunk_offsets[k] > current_offset &&
1391
                            msc->chunk_offsets[k] - current_offset < chunk_size) {
1392
                            chunk_size = msc->chunk_offsets[k] - current_offset;
1393
                            msc->next_chunk = k;
1394
                            break;
1395
                        }
1396
                    }
1397
                }
1398
                /* check for last chunk */
1399
                if (chunk_size == INT_MAX)
1400
                    for (j = 0; j < mov->mdat_count; j++) {
1401
                        dprintf(mov->fc, "mdat %d, offset %"PRIx64", size %"PRId64", current offset %"PRIx64"\n",
1402
                                j, mov->mdat_list[j].offset, mov->mdat_list[j].size, current_offset);
1403
                        if (mov->mdat_list[j].offset <= current_offset &&
1404
                            mov->mdat_list[j].offset + mov->mdat_list[j].size > current_offset)
1405
                            chunk_size = mov->mdat_list[j].offset + mov->mdat_list[j].size - current_offset;
1406
                    }
1407
                assert(chunk_size != INT_MAX);
1408
                for (j = 0; j < mov->fc->nb_streams; j++) {
1409
                    MOVStreamContext *msc = mov->fc->streams[j]->priv_data;
1410
                    msc->next_chunk = 0;
1411
                }
1412
            }
1413
            av_add_index_entry(st, current_offset, current_dts, chunk_size, 0, AVINDEX_KEYFRAME);
1414
            /* get chunk duration */
1415
            chunk_duration = 0;
1416
            while (chunk_samples > 0) {
1417
                if (chunk_samples < sc->stts_data[stts_index].count) {
1418
                    chunk_duration += sc->stts_data[stts_index].duration * chunk_samples;
1419
                    sc->stts_data[stts_index].count -= chunk_samples;
1420
                    break;
1421
                } else {
1422
                    chunk_duration += sc->stts_data[stts_index].duration * chunk_samples;
1423
                    chunk_samples -= sc->stts_data[stts_index].count;
1424
                    if (stts_index + 1 < sc->stts_count) {
1425
                        stts_index++;
1426
                    }
1427
                }
1428
            }
1429
            dprintf(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", size %d, "
1430
                    "duration %d\n", st->index, i, current_offset, current_dts, chunk_size, chunk_duration);
1431
            assert(chunk_duration % sc->time_rate == 0);
1432
            current_dts += chunk_duration / sc->time_rate;
1433
        }
1434
    }
1435
 out:
1436
    /* adjust sample count to avindex entries */
1437
    sc->sample_count = st->nb_index_entries;
1438
}
1439

    
1440
static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
1441
{
1442
    MOVContext *mov = s->priv_data;
1443
    ByteIOContext *pb = s->pb;
1444
    int i, err;
1445
    MOV_atom_t atom = { 0, 0, 0 };
1446

    
1447
    mov->fc = s;
1448

    
1449
    if(!url_is_streamed(pb)) /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
1450
        atom.size = url_fsize(pb);
1451
    else
1452
        atom.size = INT64_MAX;
1453

    
1454
    /* check MOV header */
1455
    err = mov_read_default(mov, pb, atom);
1456
    if (err<0 || (!mov->found_moov && !mov->found_mdat)) {
1457
        av_log(s, AV_LOG_ERROR, "mov: header not found !!! (err:%d, moov:%d, mdat:%d) pos:%"PRId64"\n",
1458
                err, mov->found_moov, mov->found_mdat, url_ftell(pb));
1459
        return -1;
1460
    }
1461
    dprintf(mov->fc, "on_parse_exit_offset=%d\n", (int) url_ftell(pb));
1462

    
1463
    for(i=0; i<s->nb_streams; i++) {
1464
        AVStream *st = s->streams[i];
1465
        MOVStreamContext *sc = st->priv_data;
1466
        /* sanity checks */
1467
        if(!sc->stts_count || !sc->chunk_count || !sc->sample_to_chunk_sz ||
1468
           (!sc->sample_size && !sc->sample_count)){
1469
            av_log(s, AV_LOG_ERROR, "missing mandatory atoms, broken header\n");
1470
            sc->sample_count = 0; //ignore track
1471
            continue;
1472
        }
1473
        if(!sc->time_rate)
1474
            sc->time_rate=1;
1475
        if(!sc->time_scale)
1476
            sc->time_scale= mov->time_scale;
1477
        av_set_pts_info(st, 64, sc->time_rate, sc->time_scale);
1478

    
1479
        if (st->codec->codec_type == CODEC_TYPE_AUDIO && sc->stts_count == 1)
1480
            st->codec->frame_size = sc->stts_data[0].duration;
1481

    
1482
        if(st->duration != AV_NOPTS_VALUE){
1483
            assert(st->duration % sc->time_rate == 0);
1484
            st->duration /= sc->time_rate;
1485
        }
1486
        sc->ffindex = i;
1487
        mov_build_index(mov, st);
1488
    }
1489

    
1490
    for(i=0; i<s->nb_streams; i++) {
1491
        MOVStreamContext *sc = s->streams[i]->priv_data;
1492
        /* Do not need those anymore. */
1493
        av_freep(&sc->chunk_offsets);
1494
        av_freep(&sc->sample_to_chunk);
1495
        av_freep(&sc->sample_sizes);
1496
        av_freep(&sc->keyframes);
1497
        av_freep(&sc->stts_data);
1498
    }
1499
    av_freep(&mov->mdat_list);
1500
    return 0;
1501
}
1502

    
1503
static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
1504
{
1505
    MOVContext *mov = s->priv_data;
1506
    MOVStreamContext *sc = 0;
1507
    AVIndexEntry *sample = 0;
1508
    int64_t best_dts = INT64_MAX;
1509
    int i;
1510

    
1511
    for (i = 0; i < s->nb_streams; i++) {
1512
        AVStream *st = s->streams[i];
1513
        MOVStreamContext *msc = st->priv_data;
1514
        if (st->discard != AVDISCARD_ALL && msc->current_sample < msc->sample_count) {
1515
            AVIndexEntry *current_sample = &st->index_entries[msc->current_sample];
1516
            int64_t dts = av_rescale(current_sample->timestamp * (int64_t)msc->time_rate,
1517
                                     AV_TIME_BASE, msc->time_scale);
1518
            dprintf(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
1519
            if (!sample || (url_is_streamed(s->pb) && current_sample->pos < sample->pos) ||
1520
                (!url_is_streamed(s->pb) &&
1521
                 ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
1522
                  (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))) {
1523
                sample = current_sample;
1524
                best_dts = dts;
1525
                sc = msc;
1526
            }
1527
        }
1528
    }
1529
    if (!sample)
1530
        return -1;
1531
    /* must be done just before reading, to avoid infinite loop on sample */
1532
    sc->current_sample++;
1533
    if (url_fseek(s->pb, sample->pos, SEEK_SET) != sample->pos) {
1534
        av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
1535
               sc->ffindex, sample->pos);
1536
        return -1;
1537
    }
1538
#ifdef CONFIG_DV_DEMUXER
1539
    if (sc->dv_audio_container) {
1540
        dv_get_packet(mov->dv_demux, pkt);
1541
        dprintf(s, "dv audio pkt size %d\n", pkt->size);
1542
    } else {
1543
#endif
1544
        av_get_packet(s->pb, pkt, sample->size);
1545
#ifdef CONFIG_DV_DEMUXER
1546
        if (mov->dv_demux) {
1547
            void *pkt_destruct_func = pkt->destruct;
1548
            dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size);
1549
            pkt->destruct = pkt_destruct_func;
1550
        }
1551
    }
1552
#endif
1553
    pkt->stream_index = sc->ffindex;
1554
    pkt->dts = sample->timestamp;
1555
    if (sc->ctts_data) {
1556
        assert(sc->ctts_data[sc->sample_to_ctime_index].duration % sc->time_rate == 0);
1557
        pkt->pts = pkt->dts + sc->ctts_data[sc->sample_to_ctime_index].duration / sc->time_rate;
1558
        /* update ctts context */
1559
        sc->sample_to_ctime_sample++;
1560
        if (sc->sample_to_ctime_index < sc->ctts_count &&
1561
            sc->ctts_data[sc->sample_to_ctime_index].count == sc->sample_to_ctime_sample) {
1562
            sc->sample_to_ctime_index++;
1563
            sc->sample_to_ctime_sample = 0;
1564
        }
1565
    } else {
1566
        pkt->pts = pkt->dts;
1567
    }
1568
    pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? PKT_FLAG_KEY : 0;
1569
    pkt->pos = sample->pos;
1570
    dprintf(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n",
1571
            pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
1572
    return 0;
1573
}
1574

    
1575
static int mov_seek_stream(AVStream *st, int64_t timestamp, int flags)
1576
{
1577
    MOVStreamContext *sc = st->priv_data;
1578
    int sample, time_sample;
1579
    int i;
1580

    
1581
    sample = av_index_search_timestamp(st, timestamp, flags);
1582
    dprintf(st->codec, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
1583
    if (sample < 0) /* not sure what to do */
1584
        return -1;
1585
    sc->current_sample = sample;
1586
    dprintf(st->codec, "stream %d, found sample %d\n", st->index, sc->current_sample);
1587
    /* adjust ctts index */
1588
    if (sc->ctts_data) {
1589
        time_sample = 0;
1590
        for (i = 0; i < sc->ctts_count; i++) {
1591
            int next = time_sample + sc->ctts_data[i].count;
1592
            if (next > sc->current_sample) {
1593
                sc->sample_to_ctime_index = i;
1594
                sc->sample_to_ctime_sample = sc->current_sample - time_sample;
1595
                break;
1596
            }
1597
            time_sample = next;
1598
        }
1599
    }
1600
    return sample;
1601
}
1602

    
1603
static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
1604
{
1605
    AVStream *st;
1606
    int64_t seek_timestamp, timestamp;
1607
    int sample;
1608
    int i;
1609

    
1610
    if (stream_index >= s->nb_streams)
1611
        return -1;
1612

    
1613
    st = s->streams[stream_index];
1614
    sample = mov_seek_stream(st, sample_time, flags);
1615
    if (sample < 0)
1616
        return -1;
1617

    
1618
    /* adjust seek timestamp to found sample timestamp */
1619
    seek_timestamp = st->index_entries[sample].timestamp;
1620

    
1621
    for (i = 0; i < s->nb_streams; i++) {
1622
        st = s->streams[i];
1623
        if (stream_index == i || st->discard == AVDISCARD_ALL)
1624
            continue;
1625

    
1626
        timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
1627
        mov_seek_stream(st, timestamp, flags);
1628
    }
1629
    return 0;
1630
}
1631

    
1632
static int mov_read_close(AVFormatContext *s)
1633
{
1634
    int i;
1635
    MOVContext *mov = s->priv_data;
1636
    for(i=0; i<s->nb_streams; i++) {
1637
        MOVStreamContext *sc = s->streams[i]->priv_data;
1638
        av_freep(&sc->ctts_data);
1639
    }
1640
    if(mov->dv_demux){
1641
        for(i=0; i<mov->dv_fctx->nb_streams; i++){
1642
            av_freep(&mov->dv_fctx->streams[i]->codec);
1643
            av_freep(&mov->dv_fctx->streams[i]);
1644
        }
1645
        av_freep(&mov->dv_fctx);
1646
        av_freep(&mov->dv_demux);
1647
    }
1648
    return 0;
1649
}
1650

    
1651
AVInputFormat mov_demuxer = {
1652
    "mov,mp4,m4a,3gp,3g2,mj2",
1653
    "QuickTime/MPEG4/Motion JPEG 2000 format",
1654
    sizeof(MOVContext),
1655
    mov_probe,
1656
    mov_read_header,
1657
    mov_read_packet,
1658
    mov_read_close,
1659
    mov_read_seek,
1660
};