Statistics
| Branch: | Revision:

ffmpeg / libavformat / mov.c @ f2ad9070

History | View | Annotate | Download (75.8 KB)

1
/*
2
 * MOV demuxer
3
 * Copyright (c) 2001 Fabrice Bellard
4
 * Copyright (c) 2009 Baptiste Coudurier <baptiste dot coudurier at gmail dot com>
5
 *
6
 * This file is part of FFmpeg.
7
 *
8
 * FFmpeg is free software; you can redistribute it and/or
9
 * modify it under the terms of the GNU Lesser General Public
10
 * License as published by the Free Software Foundation; either
11
 * version 2.1 of the License, or (at your option) any later version.
12
 *
13
 * FFmpeg is distributed in the hope that it will be useful,
14
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
16
 * Lesser General Public License for more details.
17
 *
18
 * You should have received a copy of the GNU Lesser General Public
19
 * License along with FFmpeg; if not, write to the Free Software
20
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21
 */
22

    
23
#include <limits.h>
24

    
25
//#define DEBUG
26
//#define DEBUG_METADATA
27
//#define MOV_EXPORT_ALL_METADATA
28

    
29
#include "libavutil/intreadwrite.h"
30
#include "libavutil/avstring.h"
31
#include "avformat.h"
32
#include "riff.h"
33
#include "isom.h"
34
#include "libavcodec/mpeg4audio.h"
35
#include "libavcodec/mpegaudiodata.h"
36
#include "libavcodec/get_bits.h"
37

    
38
#if CONFIG_ZLIB
39
#include <zlib.h>
40
#endif
41

    
42
/*
43
 * First version by Francois Revol revol@free.fr
44
 * Seek function by Gael Chardon gael.dev@4now.net
45
 *
46
 * Features and limitations:
47
 * - reads most of the QT files I have (at least the structure),
48
 *   Sample QuickTime files with mp3 audio can be found at: http://www.3ivx.com/showcase.html
49
 * - the code is quite ugly... maybe I won't do it recursive next time :-)
50
 *
51
 * Funny I didn't know about http://sourceforge.net/projects/qt-ffmpeg/
52
 * when coding this :) (it's a writer anyway)
53
 *
54
 * Reference documents:
55
 * http://www.geocities.com/xhelmboyx/quicktime/formats/qtm-layout.txt
56
 * Apple:
57
 *  http://developer.apple.com/documentation/QuickTime/QTFF/
58
 *  http://developer.apple.com/documentation/QuickTime/QTFF/qtff.pdf
59
 * QuickTime is a trademark of Apple (AFAIK :))
60
 */
61

    
62
#include "qtpalette.h"
63

    
64

    
65
#undef NDEBUG
66
#include <assert.h>
67

    
68
/* XXX: it's the first time I make a recursive parser I think... sorry if it's ugly :P */
69

    
70
/* those functions parse an atom */
71
/* return code:
72
  0: continue to parse next atom
73
 <0: error occurred, exit
74
*/
75
/* links atom IDs to parse functions */
76
typedef struct MOVParseTableEntry {
77
    uint32_t type;
78
    int (*parse)(MOVContext *ctx, ByteIOContext *pb, MOVAtom atom);
79
} MOVParseTableEntry;
80

    
81
static const MOVParseTableEntry mov_default_parse_table[];
82

    
83
static int mov_metadata_trkn(MOVContext *c, ByteIOContext *pb, unsigned len)
84
{
85
    char buf[16];
86

    
87
    get_be16(pb); // unknown
88
    snprintf(buf, sizeof(buf), "%d", get_be16(pb));
89
    av_metadata_set(&c->fc->metadata, "track", buf);
90

    
91
    get_be16(pb); // total tracks
92

    
93
    return 0;
94
}
95

    
96
static int mov_read_udta_string(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
97
{
98
#ifdef MOV_EXPORT_ALL_METADATA
99
    char tmp_key[5];
100
#endif
101
    char str[1024], key2[16], language[4] = {0};
102
    const char *key = NULL;
103
    uint16_t str_size;
104
    int (*parse)(MOVContext*, ByteIOContext*, unsigned) = NULL;
105

    
106
    switch (atom.type) {
107
    case MKTAG(0xa9,'n','a','m'): key = "title";     break;
108
    case MKTAG(0xa9,'a','u','t'):
109
    case MKTAG(0xa9,'A','R','T'):
110
    case MKTAG(0xa9,'w','r','t'): key = "author";    break;
111
    case MKTAG(0xa9,'c','p','y'): key = "copyright"; break;
112
    case MKTAG(0xa9,'c','m','t'):
113
    case MKTAG(0xa9,'i','n','f'): key = "comment";   break;
114
    case MKTAG(0xa9,'a','l','b'): key = "album";     break;
115
    case MKTAG(0xa9,'d','a','y'): key = "year";      break;
116
    case MKTAG(0xa9,'g','e','n'): key = "genre";     break;
117
    case MKTAG(0xa9,'t','o','o'):
118
    case MKTAG(0xa9,'e','n','c'): key = "muxer";     break;
119
    case MKTAG( 't','r','k','n'): key = "track";
120
        parse = mov_metadata_trkn; break;
121
    }
122

    
123
    if (c->itunes_metadata && atom.size > 8) {
124
        int data_size = get_be32(pb);
125
        int tag = get_le32(pb);
126
        if (tag == MKTAG('d','a','t','a')) {
127
            get_be32(pb); // type
128
            get_be32(pb); // unknown
129
            str_size = data_size - 16;
130
            atom.size -= 16;
131
        } else return 0;
132
    } else if (atom.size > 4 && key && !c->itunes_metadata) {
133
        str_size = get_be16(pb); // string length
134
        ff_mov_lang_to_iso639(get_be16(pb), language);
135
        atom.size -= 4;
136
    } else
137
        str_size = atom.size;
138

    
139
#ifdef MOV_EXPORT_ALL_METADATA
140
    if (!key) {
141
        snprintf(tmp_key, 5, "%.4s", (char*)&atom.type);
142
        key = tmp_key;
143
    }
144
#endif
145

    
146
    if (!key)
147
        return 0;
148
    if (atom.size < 0)
149
        return -1;
150

    
151
    str_size = FFMIN3(sizeof(str)-1, str_size, atom.size);
152

    
153
    if (parse)
154
        parse(c, pb, str_size);
155
    else {
156
        get_buffer(pb, str, str_size);
157
        str[str_size] = 0;
158
        av_metadata_set(&c->fc->metadata, key, str);
159
        if (*language && strcmp(language, "und")) {
160
            snprintf(key2, sizeof(key2), "%s-%s", key, language);
161
            av_metadata_set(&c->fc->metadata, key2, str);
162
        }
163
    }
164
#ifdef DEBUG_METADATA
165
    av_log(c->fc, AV_LOG_DEBUG, "lang \"%3s\" ", language);
166
    av_log(c->fc, AV_LOG_DEBUG, "tag \"%s\" value \"%s\" atom \"%.4s\" %d %lld\n",
167
           key, str, (char*)&atom.type, str_size, atom.size);
168
#endif
169

    
170
    return 0;
171
}
172

    
173
static int mov_read_default(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
174
{
175
    int64_t total_size = 0;
176
    MOVAtom a;
177
    int i;
178
    int err = 0;
179

    
180
    a.offset = atom.offset;
181

    
182
    if (atom.size < 0)
183
        atom.size = INT64_MAX;
184
    while(((total_size + 8) < atom.size) && !url_feof(pb) && !err) {
185
        int (*parse)(MOVContext*, ByteIOContext*, MOVAtom) = NULL;
186
        a.size = atom.size;
187
        a.type=0;
188
        if(atom.size >= 8) {
189
            a.size = get_be32(pb);
190
            a.type = get_le32(pb);
191
        }
192
        total_size += 8;
193
        a.offset += 8;
194
        dprintf(c->fc, "type: %08x  %.4s  sz: %"PRIx64"  %"PRIx64"   %"PRIx64"\n",
195
                a.type, (char*)&a.type, a.size, atom.size, total_size);
196
        if (a.size == 1) { /* 64 bit extended size */
197
            a.size = get_be64(pb) - 8;
198
            a.offset += 8;
199
            total_size += 8;
200
        }
201
        if (a.size == 0) {
202
            a.size = atom.size - total_size;
203
            if (a.size <= 8)
204
                break;
205
        }
206
        a.size -= 8;
207
        if(a.size < 0)
208
            break;
209
        a.size = FFMIN(a.size, atom.size - total_size);
210

    
211
        for (i = 0; mov_default_parse_table[i].type; i++)
212
            if (mov_default_parse_table[i].type == a.type) {
213
                parse = mov_default_parse_table[i].parse;
214
                break;
215
            }
216

    
217
        // container is user data
218
        if (!parse && (atom.type == MKTAG('u','d','t','a') ||
219
                       atom.type == MKTAG('i','l','s','t')))
220
            parse = mov_read_udta_string;
221

    
222
        if (!parse) { /* skip leaf atoms data */
223
            url_fskip(pb, a.size);
224
        } else {
225
            int64_t start_pos = url_ftell(pb);
226
            int64_t left;
227
            err = parse(c, pb, a);
228
            if (url_is_streamed(pb) && c->found_moov && c->found_mdat)
229
                break;
230
            left = a.size - url_ftell(pb) + start_pos;
231
            if (left > 0) /* skip garbage at atom end */
232
                url_fskip(pb, left);
233
        }
234

    
235
        a.offset += a.size;
236
        total_size += a.size;
237
    }
238

    
239
    if (!err && total_size < atom.size && atom.size < 0x7ffff)
240
        url_fskip(pb, atom.size - total_size);
241

    
242
    return err;
243
}
244

    
245
static int mov_read_dref(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
246
{
247
    AVStream *st;
248
    MOVStreamContext *sc;
249
    int entries, i, j;
250

    
251
    if (c->fc->nb_streams < 1)
252
        return 0;
253
    st = c->fc->streams[c->fc->nb_streams-1];
254
    sc = st->priv_data;
255

    
256
    get_be32(pb); // version + flags
257
    entries = get_be32(pb);
258
    if (entries >= UINT_MAX / sizeof(*sc->drefs))
259
        return -1;
260
    sc->drefs = av_mallocz(entries * sizeof(*sc->drefs));
261
    if (!sc->drefs)
262
        return AVERROR(ENOMEM);
263
    sc->drefs_count = entries;
264

    
265
    for (i = 0; i < sc->drefs_count; i++) {
266
        MOVDref *dref = &sc->drefs[i];
267
        uint32_t size = get_be32(pb);
268
        int64_t next = url_ftell(pb) + size - 4;
269

    
270
        dref->type = get_le32(pb);
271
        get_be32(pb); // version + flags
272
        dprintf(c->fc, "type %.4s size %d\n", (char*)&dref->type, size);
273

    
274
        if (dref->type == MKTAG('a','l','i','s') && size > 150) {
275
            /* macintosh alias record */
276
            uint16_t volume_len, len;
277
            char volume[28];
278
            int16_t type;
279

    
280
            url_fskip(pb, 10);
281

    
282
            volume_len = get_byte(pb);
283
            volume_len = FFMIN(volume_len, 27);
284
            get_buffer(pb, volume, 27);
285
            volume[volume_len] = 0;
286
            av_log(c->fc, AV_LOG_DEBUG, "volume %s, len %d\n", volume, volume_len);
287

    
288
            url_fskip(pb, 112);
289

    
290
            for (type = 0; type != -1 && url_ftell(pb) < next; ) {
291
                type = get_be16(pb);
292
                len = get_be16(pb);
293
                av_log(c->fc, AV_LOG_DEBUG, "type %d, len %d\n", type, len);
294
                if (len&1)
295
                    len += 1;
296
                if (type == 2) { // absolute path
297
                    av_free(dref->path);
298
                    dref->path = av_mallocz(len+1);
299
                    if (!dref->path)
300
                        return AVERROR(ENOMEM);
301
                    get_buffer(pb, dref->path, len);
302
                    if (len > volume_len && !strncmp(dref->path, volume, volume_len)) {
303
                        len -= volume_len;
304
                        memmove(dref->path, dref->path+volume_len, len);
305
                        dref->path[len] = 0;
306
                    }
307
                    for (j = 0; j < len; j++)
308
                        if (dref->path[j] == ':')
309
                            dref->path[j] = '/';
310
                    av_log(c->fc, AV_LOG_DEBUG, "path %s\n", dref->path);
311
                } else
312
                    url_fskip(pb, len);
313
            }
314
        }
315
        url_fseek(pb, next, SEEK_SET);
316
    }
317
    return 0;
318
}
319

    
320
static int mov_read_hdlr(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
321
{
322
    AVStream *st;
323
    uint32_t type;
324
    uint32_t ctype;
325

    
326
    if (c->fc->nb_streams < 1) // meta before first trak
327
        return 0;
328

    
329
    st = c->fc->streams[c->fc->nb_streams-1];
330

    
331
    get_byte(pb); /* version */
332
    get_be24(pb); /* flags */
333

    
334
    /* component type */
335
    ctype = get_le32(pb);
336
    type = get_le32(pb); /* component subtype */
337

    
338
    dprintf(c->fc, "ctype= %.4s (0x%08x)\n", (char*)&ctype, ctype);
339
    dprintf(c->fc, "stype= %.4s\n", (char*)&type);
340

    
341
    if     (type == MKTAG('v','i','d','e'))
342
        st->codec->codec_type = CODEC_TYPE_VIDEO;
343
    else if(type == MKTAG('s','o','u','n'))
344
        st->codec->codec_type = CODEC_TYPE_AUDIO;
345
    else if(type == MKTAG('m','1','a',' '))
346
        st->codec->codec_id = CODEC_ID_MP2;
347
    else if(type == MKTAG('s','u','b','p'))
348
        st->codec->codec_type = CODEC_TYPE_SUBTITLE;
349

    
350
    get_be32(pb); /* component  manufacture */
351
    get_be32(pb); /* component flags */
352
    get_be32(pb); /* component flags mask */
353

    
354
    if(atom.size <= 24)
355
        return 0; /* nothing left to read */
356

    
357
    url_fskip(pb, atom.size - (url_ftell(pb) - atom.offset));
358
    return 0;
359
}
360

    
361
int ff_mp4_read_descr_len(ByteIOContext *pb)
362
{
363
    int len = 0;
364
    int count = 4;
365
    while (count--) {
366
        int c = get_byte(pb);
367
        len = (len << 7) | (c & 0x7f);
368
        if (!(c & 0x80))
369
            break;
370
    }
371
    return len;
372
}
373

    
374
int mp4_read_descr(AVFormatContext *fc, ByteIOContext *pb, int *tag)
375
{
376
    int len;
377
    *tag = get_byte(pb);
378
    len = ff_mp4_read_descr_len(pb);
379
    dprintf(fc, "MPEG4 description: tag=0x%02x len=%d\n", *tag, len);
380
    return len;
381
}
382

    
383
#define MP4ESDescrTag                   0x03
384
#define MP4DecConfigDescrTag            0x04
385
#define MP4DecSpecificDescrTag          0x05
386

    
387
static const AVCodecTag mp4_audio_types[] = {
388
    { CODEC_ID_MP3ON4, AOT_PS   }, /* old mp3on4 draft */
389
    { CODEC_ID_MP3ON4, AOT_L1   }, /* layer 1 */
390
    { CODEC_ID_MP3ON4, AOT_L2   }, /* layer 2 */
391
    { CODEC_ID_MP3ON4, AOT_L3   }, /* layer 3 */
392
    { CODEC_ID_MP4ALS, AOT_ALS  }, /* MPEG-4 ALS */
393
    { CODEC_ID_NONE,   AOT_NULL },
394
};
395

    
396
int ff_mov_read_esds(AVFormatContext *fc, ByteIOContext *pb, MOVAtom atom)
397
{
398
    AVStream *st;
399
    int tag, len;
400

    
401
    if (fc->nb_streams < 1)
402
        return 0;
403
    st = fc->streams[fc->nb_streams-1];
404

    
405
    get_be32(pb); /* version + flags */
406
    len = mp4_read_descr(fc, pb, &tag);
407
    if (tag == MP4ESDescrTag) {
408
        get_be16(pb); /* ID */
409
        get_byte(pb); /* priority */
410
    } else
411
        get_be16(pb); /* ID */
412

    
413
    len = mp4_read_descr(fc, pb, &tag);
414
    if (tag == MP4DecConfigDescrTag) {
415
        int object_type_id = get_byte(pb);
416
        get_byte(pb); /* stream type */
417
        get_be24(pb); /* buffer size db */
418
        get_be32(pb); /* max bitrate */
419
        get_be32(pb); /* avg bitrate */
420

    
421
        st->codec->codec_id= ff_codec_get_id(ff_mp4_obj_type, object_type_id);
422
        dprintf(fc, "esds object type id %d\n", object_type_id);
423
        len = mp4_read_descr(fc, pb, &tag);
424
        if (tag == MP4DecSpecificDescrTag) {
425
            dprintf(fc, "Specific MPEG4 header len=%d\n", len);
426
            if((uint64_t)len > (1<<30))
427
                return -1;
428
            st->codec->extradata = av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
429
            if (!st->codec->extradata)
430
                return AVERROR(ENOMEM);
431
            get_buffer(pb, st->codec->extradata, len);
432
            st->codec->extradata_size = len;
433
            if (st->codec->codec_id == CODEC_ID_AAC) {
434
                MPEG4AudioConfig cfg;
435
                ff_mpeg4audio_get_config(&cfg, st->codec->extradata,
436
                                         st->codec->extradata_size);
437
                if (cfg.chan_config > 7)
438
                    return -1;
439
                st->codec->channels = ff_mpeg4audio_channels[cfg.chan_config];
440
                if (cfg.object_type == 29 && cfg.sampling_index < 3) // old mp3on4
441
                    st->codec->sample_rate = ff_mpa_freq_tab[cfg.sampling_index];
442
                else
443
                    st->codec->sample_rate = cfg.sample_rate; // ext sample rate ?
444
                dprintf(fc, "mp4a config channels %d obj %d ext obj %d "
445
                        "sample rate %d ext sample rate %d\n", st->codec->channels,
446
                        cfg.object_type, cfg.ext_object_type,
447
                        cfg.sample_rate, cfg.ext_sample_rate);
448
                if (!(st->codec->codec_id = ff_codec_get_id(mp4_audio_types,
449
                                                            cfg.object_type)))
450
                    st->codec->codec_id = CODEC_ID_AAC;
451
            }
452
        }
453
    }
454
    return 0;
455
}
456

    
457
static int mov_read_esds(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
458
{
459
    return ff_mov_read_esds(c->fc, pb, atom);
460
}
461

    
462
static int mov_read_pasp(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
463
{
464
    const int num = get_be32(pb);
465
    const int den = get_be32(pb);
466
    AVStream *st;
467

    
468
    if (c->fc->nb_streams < 1)
469
        return 0;
470
    st = c->fc->streams[c->fc->nb_streams-1];
471

    
472
    if (den != 0) {
473
        if ((st->sample_aspect_ratio.den != 1 || st->sample_aspect_ratio.num) && // default
474
            (den != st->sample_aspect_ratio.den || num != st->sample_aspect_ratio.num))
475
            av_log(c->fc, AV_LOG_WARNING,
476
                   "sample aspect ratio already set to %d:%d, overriding by 'pasp' atom\n",
477
                   st->sample_aspect_ratio.num, st->sample_aspect_ratio.den);
478
        st->sample_aspect_ratio.num = num;
479
        st->sample_aspect_ratio.den = den;
480
    }
481
    return 0;
482
}
483

    
484
/* this atom contains actual media data */
485
static int mov_read_mdat(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
486
{
487
    if(atom.size == 0) /* wrong one (MP4) */
488
        return 0;
489
    c->found_mdat=1;
490
    return 0; /* now go for moov */
491
}
492

    
493
/* read major brand, minor version and compatible brands and store them as metadata */
494
static int mov_read_ftyp(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
495
{
496
    uint32_t minor_ver;
497
    int comp_brand_size;
498
    char minor_ver_str[11]; /* 32 bit integer -> 10 digits + null */
499
    char* comp_brands_str;
500
    uint8_t type[5] = {0};
501

    
502
    get_buffer(pb, type, 4);
503
    if (strcmp(type, "qt  "))
504
        c->isom = 1;
505
    av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
506
    av_metadata_set(&c->fc->metadata, "major_brand", type);
507
    minor_ver = get_be32(pb); /* minor version */
508
    snprintf(minor_ver_str, sizeof(minor_ver_str), "%d", minor_ver);
509
    av_metadata_set(&c->fc->metadata, "minor_version", minor_ver_str);
510

    
511
    comp_brand_size = atom.size - 8;
512
    if (comp_brand_size < 0)
513
        return -1;
514
    comp_brands_str = av_malloc(comp_brand_size + 1); /* Add null terminator */
515
    if (!comp_brands_str)
516
        return AVERROR(ENOMEM);
517
    get_buffer(pb, comp_brands_str, comp_brand_size);
518
    comp_brands_str[comp_brand_size] = 0;
519
    av_metadata_set(&c->fc->metadata, "compatible_brands", comp_brands_str);
520
    av_freep(&comp_brands_str);
521

    
522
    return 0;
523
}
524

    
525
/* this atom should contain all header atoms */
526
static int mov_read_moov(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
527
{
528
    if (mov_read_default(c, pb, atom) < 0)
529
        return -1;
530
    /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
531
    /* so we don't parse the whole file if over a network */
532
    c->found_moov=1;
533
    return 0; /* now go for mdat */
534
}
535

    
536
static int mov_read_moof(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
537
{
538
    c->fragment.moof_offset = url_ftell(pb) - 8;
539
    dprintf(c->fc, "moof offset %llx\n", c->fragment.moof_offset);
540
    return mov_read_default(c, pb, atom);
541
}
542

    
543
static int mov_read_mdhd(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
544
{
545
    AVStream *st;
546
    MOVStreamContext *sc;
547
    int version;
548
    char language[4] = {0};
549
    unsigned lang;
550

    
551
    if (c->fc->nb_streams < 1)
552
        return 0;
553
    st = c->fc->streams[c->fc->nb_streams-1];
554
    sc = st->priv_data;
555

    
556
    version = get_byte(pb);
557
    if (version > 1)
558
        return -1; /* unsupported */
559

    
560
    get_be24(pb); /* flags */
561
    if (version == 1) {
562
        get_be64(pb);
563
        get_be64(pb);
564
    } else {
565
        get_be32(pb); /* creation time */
566
        get_be32(pb); /* modification time */
567
    }
568

    
569
    sc->time_scale = get_be32(pb);
570
    st->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
571

    
572
    lang = get_be16(pb); /* language */
573
    if (ff_mov_lang_to_iso639(lang, language))
574
        av_metadata_set(&st->metadata, "language", language);
575
    get_be16(pb); /* quality */
576

    
577
    return 0;
578
}
579

    
580
static int mov_read_mvhd(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
581
{
582
    int version = get_byte(pb); /* version */
583
    get_be24(pb); /* flags */
584

    
585
    if (version == 1) {
586
        get_be64(pb);
587
        get_be64(pb);
588
    } else {
589
        get_be32(pb); /* creation time */
590
        get_be32(pb); /* modification time */
591
    }
592
    c->time_scale = get_be32(pb); /* time scale */
593

    
594
    dprintf(c->fc, "time scale = %i\n", c->time_scale);
595

    
596
    c->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
597
    get_be32(pb); /* preferred scale */
598

    
599
    get_be16(pb); /* preferred volume */
600

    
601
    url_fskip(pb, 10); /* reserved */
602

    
603
    url_fskip(pb, 36); /* display matrix */
604

    
605
    get_be32(pb); /* preview time */
606
    get_be32(pb); /* preview duration */
607
    get_be32(pb); /* poster time */
608
    get_be32(pb); /* selection time */
609
    get_be32(pb); /* selection duration */
610
    get_be32(pb); /* current time */
611
    get_be32(pb); /* next track ID */
612

    
613
    return 0;
614
}
615

    
616
static int mov_read_smi(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
617
{
618
    AVStream *st;
619

    
620
    if (c->fc->nb_streams < 1)
621
        return 0;
622
    st = c->fc->streams[c->fc->nb_streams-1];
623

    
624
    if((uint64_t)atom.size > (1<<30))
625
        return -1;
626

    
627
    // currently SVQ3 decoder expect full STSD header - so let's fake it
628
    // this should be fixed and just SMI header should be passed
629
    av_free(st->codec->extradata);
630
    st->codec->extradata = av_mallocz(atom.size + 0x5a + FF_INPUT_BUFFER_PADDING_SIZE);
631
    if (!st->codec->extradata)
632
        return AVERROR(ENOMEM);
633
    st->codec->extradata_size = 0x5a + atom.size;
634
    memcpy(st->codec->extradata, "SVQ3", 4); // fake
635
    get_buffer(pb, st->codec->extradata + 0x5a, atom.size);
636
    dprintf(c->fc, "Reading SMI %"PRId64"  %s\n", atom.size, st->codec->extradata + 0x5a);
637
    return 0;
638
}
639

    
640
static int mov_read_enda(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
641
{
642
    AVStream *st;
643
    int little_endian;
644

    
645
    if (c->fc->nb_streams < 1)
646
        return 0;
647
    st = c->fc->streams[c->fc->nb_streams-1];
648

    
649
    little_endian = get_be16(pb);
650
    dprintf(c->fc, "enda %d\n", little_endian);
651
    if (little_endian == 1) {
652
        switch (st->codec->codec_id) {
653
        case CODEC_ID_PCM_S24BE:
654
            st->codec->codec_id = CODEC_ID_PCM_S24LE;
655
            break;
656
        case CODEC_ID_PCM_S32BE:
657
            st->codec->codec_id = CODEC_ID_PCM_S32LE;
658
            break;
659
        case CODEC_ID_PCM_F32BE:
660
            st->codec->codec_id = CODEC_ID_PCM_F32LE;
661
            break;
662
        case CODEC_ID_PCM_F64BE:
663
            st->codec->codec_id = CODEC_ID_PCM_F64LE;
664
            break;
665
        default:
666
            break;
667
        }
668
    }
669
    return 0;
670
}
671

    
672
/* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
673
static int mov_read_extradata(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
674
{
675
    AVStream *st;
676
    uint64_t size;
677
    uint8_t *buf;
678

    
679
    if (c->fc->nb_streams < 1) // will happen with jp2 files
680
        return 0;
681
    st= c->fc->streams[c->fc->nb_streams-1];
682
    size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
683
    if(size > INT_MAX || (uint64_t)atom.size > INT_MAX)
684
        return -1;
685
    buf= av_realloc(st->codec->extradata, size);
686
    if(!buf)
687
        return -1;
688
    st->codec->extradata= buf;
689
    buf+= st->codec->extradata_size;
690
    st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE;
691
    AV_WB32(       buf    , atom.size + 8);
692
    AV_WL32(       buf + 4, atom.type);
693
    get_buffer(pb, buf + 8, atom.size);
694
    return 0;
695
}
696

    
697
static int mov_read_wave(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
698
{
699
    AVStream *st;
700

    
701
    if (c->fc->nb_streams < 1)
702
        return 0;
703
    st = c->fc->streams[c->fc->nb_streams-1];
704

    
705
    if((uint64_t)atom.size > (1<<30))
706
        return -1;
707

    
708
    if (st->codec->codec_id == CODEC_ID_QDM2) {
709
        // pass all frma atom to codec, needed at least for QDM2
710
        av_free(st->codec->extradata);
711
        st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
712
        if (!st->codec->extradata)
713
            return AVERROR(ENOMEM);
714
        st->codec->extradata_size = atom.size;
715
        get_buffer(pb, st->codec->extradata, atom.size);
716
    } else if (atom.size > 8) { /* to read frma, esds atoms */
717
        if (mov_read_default(c, pb, atom) < 0)
718
            return -1;
719
    } else
720
        url_fskip(pb, atom.size);
721
    return 0;
722
}
723

    
724
/**
725
 * This function reads atom content and puts data in extradata without tag
726
 * nor size unlike mov_read_extradata.
727
 */
728
static int mov_read_glbl(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
729
{
730
    AVStream *st;
731

    
732
    if (c->fc->nb_streams < 1)
733
        return 0;
734
    st = c->fc->streams[c->fc->nb_streams-1];
735

    
736
    if((uint64_t)atom.size > (1<<30))
737
        return -1;
738

    
739
    av_free(st->codec->extradata);
740
    st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
741
    if (!st->codec->extradata)
742
        return AVERROR(ENOMEM);
743
    st->codec->extradata_size = atom.size;
744
    get_buffer(pb, st->codec->extradata, atom.size);
745
    return 0;
746
}
747

    
748
static int mov_read_stco(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
749
{
750
    AVStream *st;
751
    MOVStreamContext *sc;
752
    unsigned int i, entries;
753

    
754
    if (c->fc->nb_streams < 1)
755
        return 0;
756
    st = c->fc->streams[c->fc->nb_streams-1];
757
    sc = st->priv_data;
758

    
759
    get_byte(pb); /* version */
760
    get_be24(pb); /* flags */
761

    
762
    entries = get_be32(pb);
763

    
764
    if(entries >= UINT_MAX/sizeof(int64_t))
765
        return -1;
766

    
767
    sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
768
    if (!sc->chunk_offsets)
769
        return AVERROR(ENOMEM);
770
    sc->chunk_count = entries;
771

    
772
    if      (atom.type == MKTAG('s','t','c','o'))
773
        for(i=0; i<entries; i++)
774
            sc->chunk_offsets[i] = get_be32(pb);
775
    else if (atom.type == MKTAG('c','o','6','4'))
776
        for(i=0; i<entries; i++)
777
            sc->chunk_offsets[i] = get_be64(pb);
778
    else
779
        return -1;
780

    
781
    return 0;
782
}
783

    
784
/**
785
 * Compute codec id for 'lpcm' tag.
786
 * See CoreAudioTypes and AudioStreamBasicDescription at Apple.
787
 */
788
enum CodecID ff_mov_get_lpcm_codec_id(int bps, int flags)
789
{
790
    if (flags & 1) { // floating point
791
        if (flags & 2) { // big endian
792
            if      (bps == 32) return CODEC_ID_PCM_F32BE;
793
            else if (bps == 64) return CODEC_ID_PCM_F64BE;
794
        } else {
795
            if      (bps == 32) return CODEC_ID_PCM_F32LE;
796
            else if (bps == 64) return CODEC_ID_PCM_F64LE;
797
        }
798
    } else {
799
        if (flags & 2) {
800
            if      (bps == 8)
801
                // signed integer
802
                if (flags & 4)  return CODEC_ID_PCM_S8;
803
                else            return CODEC_ID_PCM_U8;
804
            else if (bps == 16) return CODEC_ID_PCM_S16BE;
805
            else if (bps == 24) return CODEC_ID_PCM_S24BE;
806
            else if (bps == 32) return CODEC_ID_PCM_S32BE;
807
        } else {
808
            if      (bps == 8)
809
                if (flags & 4)  return CODEC_ID_PCM_S8;
810
                else            return CODEC_ID_PCM_U8;
811
            else if (bps == 16) return CODEC_ID_PCM_S16LE;
812
            else if (bps == 24) return CODEC_ID_PCM_S24LE;
813
            else if (bps == 32) return CODEC_ID_PCM_S32LE;
814
        }
815
    }
816
    return CODEC_ID_NONE;
817
}
818

    
819
static int mov_read_stsd(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
820
{
821
    AVStream *st;
822
    MOVStreamContext *sc;
823
    int j, entries, pseudo_stream_id;
824

    
825
    if (c->fc->nb_streams < 1)
826
        return 0;
827
    st = c->fc->streams[c->fc->nb_streams-1];
828
    sc = st->priv_data;
829

    
830
    get_byte(pb); /* version */
831
    get_be24(pb); /* flags */
832

    
833
    entries = get_be32(pb);
834

    
835
    for(pseudo_stream_id=0; pseudo_stream_id<entries; pseudo_stream_id++) {
836
        //Parsing Sample description table
837
        enum CodecID id;
838
        int dref_id = 1;
839
        MOVAtom a = { 0, 0, 0 };
840
        int64_t start_pos = url_ftell(pb);
841
        int size = get_be32(pb); /* size */
842
        uint32_t format = get_le32(pb); /* data format */
843

    
844
        if (size >= 16) {
845
            get_be32(pb); /* reserved */
846
            get_be16(pb); /* reserved */
847
            dref_id = get_be16(pb);
848
        }
849

    
850
        if (st->codec->codec_tag &&
851
            st->codec->codec_tag != format &&
852
            (c->fc->video_codec_id ? ff_codec_get_id(codec_movvideo_tags, format) != c->fc->video_codec_id
853
                                   : st->codec->codec_tag != MKTAG('j','p','e','g'))
854
           ){
855
            /* Multiple fourcc, we skip JPEG. This is not correct, we should
856
             * export it as a separate AVStream but this needs a few changes
857
             * in the MOV demuxer, patch welcome. */
858
            av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n");
859
            url_fskip(pb, size - (url_ftell(pb) - start_pos));
860
            continue;
861
        }
862
        sc->pseudo_stream_id = st->codec->codec_tag ? -1 : pseudo_stream_id;
863
        sc->dref_id= dref_id;
864

    
865
        st->codec->codec_tag = format;
866
        id = ff_codec_get_id(codec_movaudio_tags, format);
867
        if (id<=0 && ((format&0xFFFF) == 'm'+('s'<<8) || (format&0xFFFF) == 'T'+('S'<<8)))
868
            id = ff_codec_get_id(ff_codec_wav_tags, bswap_32(format)&0xFFFF);
869

    
870
        if (st->codec->codec_type != CODEC_TYPE_VIDEO && id > 0) {
871
            st->codec->codec_type = CODEC_TYPE_AUDIO;
872
        } else if (st->codec->codec_type != CODEC_TYPE_AUDIO && /* do not overwrite codec type */
873
                   format && format != MKTAG('m','p','4','s')) { /* skip old asf mpeg4 tag */
874
            id = ff_codec_get_id(codec_movvideo_tags, format);
875
            if (id <= 0)
876
                id = ff_codec_get_id(ff_codec_bmp_tags, format);
877
            if (id > 0)
878
                st->codec->codec_type = CODEC_TYPE_VIDEO;
879
            else if(st->codec->codec_type == CODEC_TYPE_DATA){
880
                id = ff_codec_get_id(ff_codec_movsubtitle_tags, format);
881
                if(id > 0)
882
                    st->codec->codec_type = CODEC_TYPE_SUBTITLE;
883
            }
884
        }
885

    
886
        dprintf(c->fc, "size=%d 4CC= %c%c%c%c codec_type=%d\n", size,
887
                (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff,
888
                (format >> 24) & 0xff, st->codec->codec_type);
889

    
890
        if(st->codec->codec_type==CODEC_TYPE_VIDEO) {
891
            uint8_t codec_name[32];
892
            unsigned int color_depth;
893
            int color_greyscale;
894

    
895
            st->codec->codec_id = id;
896
            get_be16(pb); /* version */
897
            get_be16(pb); /* revision level */
898
            get_be32(pb); /* vendor */
899
            get_be32(pb); /* temporal quality */
900
            get_be32(pb); /* spatial quality */
901

    
902
            st->codec->width = get_be16(pb); /* width */
903
            st->codec->height = get_be16(pb); /* height */
904

    
905
            get_be32(pb); /* horiz resolution */
906
            get_be32(pb); /* vert resolution */
907
            get_be32(pb); /* data size, always 0 */
908
            get_be16(pb); /* frames per samples */
909

    
910
            get_buffer(pb, codec_name, 32); /* codec name, pascal string */
911
            if (codec_name[0] <= 31) {
912
                int i;
913
                int pos = 0;
914
                for (i = 0; i < codec_name[0] && pos < sizeof(st->codec->codec_name) - 3; i++) {
915
                    uint8_t tmp;
916
                    PUT_UTF8(codec_name[i+1], tmp, st->codec->codec_name[pos++] = tmp;)
917
                }
918
                st->codec->codec_name[pos] = 0;
919
            }
920

    
921
            st->codec->bits_per_coded_sample = get_be16(pb); /* depth */
922
            st->codec->color_table_id = get_be16(pb); /* colortable id */
923
            dprintf(c->fc, "depth %d, ctab id %d\n",
924
                   st->codec->bits_per_coded_sample, st->codec->color_table_id);
925
            /* figure out the palette situation */
926
            color_depth = st->codec->bits_per_coded_sample & 0x1F;
927
            color_greyscale = st->codec->bits_per_coded_sample & 0x20;
928

    
929
            /* if the depth is 2, 4, or 8 bpp, file is palettized */
930
            if ((color_depth == 2) || (color_depth == 4) ||
931
                (color_depth == 8)) {
932
                /* for palette traversal */
933
                unsigned int color_start, color_count, color_end;
934
                unsigned char r, g, b;
935

    
936
                st->codec->palctrl = av_malloc(sizeof(*st->codec->palctrl));
937
                if (color_greyscale) {
938
                    int color_index, color_dec;
939
                    /* compute the greyscale palette */
940
                    st->codec->bits_per_coded_sample = color_depth;
941
                    color_count = 1 << color_depth;
942
                    color_index = 255;
943
                    color_dec = 256 / (color_count - 1);
944
                    for (j = 0; j < color_count; j++) {
945
                        r = g = b = color_index;
946
                        st->codec->palctrl->palette[j] =
947
                            (r << 16) | (g << 8) | (b);
948
                        color_index -= color_dec;
949
                        if (color_index < 0)
950
                            color_index = 0;
951
                    }
952
                } else if (st->codec->color_table_id) {
953
                    const uint8_t *color_table;
954
                    /* if flag bit 3 is set, use the default palette */
955
                    color_count = 1 << color_depth;
956
                    if (color_depth == 2)
957
                        color_table = ff_qt_default_palette_4;
958
                    else if (color_depth == 4)
959
                        color_table = ff_qt_default_palette_16;
960
                    else
961
                        color_table = ff_qt_default_palette_256;
962

    
963
                    for (j = 0; j < color_count; j++) {
964
                        r = color_table[j * 3 + 0];
965
                        g = color_table[j * 3 + 1];
966
                        b = color_table[j * 3 + 2];
967
                        st->codec->palctrl->palette[j] =
968
                            (r << 16) | (g << 8) | (b);
969
                    }
970
                } else {
971
                    /* load the palette from the file */
972
                    color_start = get_be32(pb);
973
                    color_count = get_be16(pb);
974
                    color_end = get_be16(pb);
975
                    if ((color_start <= 255) &&
976
                        (color_end <= 255)) {
977
                        for (j = color_start; j <= color_end; j++) {
978
                            /* each R, G, or B component is 16 bits;
979
                             * only use the top 8 bits; skip alpha bytes
980
                             * up front */
981
                            get_byte(pb);
982
                            get_byte(pb);
983
                            r = get_byte(pb);
984
                            get_byte(pb);
985
                            g = get_byte(pb);
986
                            get_byte(pb);
987
                            b = get_byte(pb);
988
                            get_byte(pb);
989
                            st->codec->palctrl->palette[j] =
990
                                (r << 16) | (g << 8) | (b);
991
                        }
992
                    }
993
                }
994
                st->codec->palctrl->palette_changed = 1;
995
            }
996
        } else if(st->codec->codec_type==CODEC_TYPE_AUDIO) {
997
            int bits_per_sample, flags;
998
            uint16_t version = get_be16(pb);
999

    
1000
            st->codec->codec_id = id;
1001
            get_be16(pb); /* revision level */
1002
            get_be32(pb); /* vendor */
1003

    
1004
            st->codec->channels = get_be16(pb);             /* channel count */
1005
            dprintf(c->fc, "audio channels %d\n", st->codec->channels);
1006
            st->codec->bits_per_coded_sample = get_be16(pb);      /* sample size */
1007

    
1008
            sc->audio_cid = get_be16(pb);
1009
            get_be16(pb); /* packet size = 0 */
1010

    
1011
            st->codec->sample_rate = ((get_be32(pb) >> 16));
1012

    
1013
            //Read QT version 1 fields. In version 0 these do not exist.
1014
            dprintf(c->fc, "version =%d, isom =%d\n",version,c->isom);
1015
            if(!c->isom) {
1016
                if(version==1) {
1017
                    sc->samples_per_frame = get_be32(pb);
1018
                    get_be32(pb); /* bytes per packet */
1019
                    sc->bytes_per_frame = get_be32(pb);
1020
                    get_be32(pb); /* bytes per sample */
1021
                } else if(version==2) {
1022
                    get_be32(pb); /* sizeof struct only */
1023
                    st->codec->sample_rate = av_int2dbl(get_be64(pb)); /* float 64 */
1024
                    st->codec->channels = get_be32(pb);
1025
                    get_be32(pb); /* always 0x7F000000 */
1026
                    st->codec->bits_per_coded_sample = get_be32(pb); /* bits per channel if sound is uncompressed */
1027
                    flags = get_be32(pb); /* lcpm format specific flag */
1028
                    sc->bytes_per_frame = get_be32(pb); /* bytes per audio packet if constant */
1029
                    sc->samples_per_frame = get_be32(pb); /* lpcm frames per audio packet if constant */
1030
                    if (format == MKTAG('l','p','c','m'))
1031
                        st->codec->codec_id = ff_mov_get_lpcm_codec_id(st->codec->bits_per_coded_sample, flags);
1032
                }
1033
            }
1034

    
1035
            switch (st->codec->codec_id) {
1036
            case CODEC_ID_PCM_S8:
1037
            case CODEC_ID_PCM_U8:
1038
                if (st->codec->bits_per_coded_sample == 16)
1039
                    st->codec->codec_id = CODEC_ID_PCM_S16BE;
1040
                break;
1041
            case CODEC_ID_PCM_S16LE:
1042
            case CODEC_ID_PCM_S16BE:
1043
                if (st->codec->bits_per_coded_sample == 8)
1044
                    st->codec->codec_id = CODEC_ID_PCM_S8;
1045
                else if (st->codec->bits_per_coded_sample == 24)
1046
                    st->codec->codec_id =
1047
                        st->codec->codec_id == CODEC_ID_PCM_S16BE ?
1048
                        CODEC_ID_PCM_S24BE : CODEC_ID_PCM_S24LE;
1049
                break;
1050
            /* set values for old format before stsd version 1 appeared */
1051
            case CODEC_ID_MACE3:
1052
                sc->samples_per_frame = 6;
1053
                sc->bytes_per_frame = 2*st->codec->channels;
1054
                break;
1055
            case CODEC_ID_MACE6:
1056
                sc->samples_per_frame = 6;
1057
                sc->bytes_per_frame = 1*st->codec->channels;
1058
                break;
1059
            case CODEC_ID_ADPCM_IMA_QT:
1060
                sc->samples_per_frame = 64;
1061
                sc->bytes_per_frame = 34*st->codec->channels;
1062
                break;
1063
            case CODEC_ID_GSM:
1064
                sc->samples_per_frame = 160;
1065
                sc->bytes_per_frame = 33;
1066
                break;
1067
            default:
1068
                break;
1069
            }
1070

    
1071
            bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
1072
            if (bits_per_sample) {
1073
                st->codec->bits_per_coded_sample = bits_per_sample;
1074
                sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
1075
            }
1076
        } else if(st->codec->codec_type==CODEC_TYPE_SUBTITLE){
1077
            // ttxt stsd contains display flags, justification, background
1078
            // color, fonts, and default styles, so fake an atom to read it
1079
            MOVAtom fake_atom = { .size = size - (url_ftell(pb) - start_pos) };
1080
            if (format != AV_RL32("mp4s")) // mp4s contains a regular esds atom
1081
                mov_read_glbl(c, pb, fake_atom);
1082
            st->codec->codec_id= id;
1083
            st->codec->width = sc->width;
1084
            st->codec->height = sc->height;
1085
        } else {
1086
            /* other codec type, just skip (rtp, mp4s, tmcd ...) */
1087
            url_fskip(pb, size - (url_ftell(pb) - start_pos));
1088
        }
1089
        /* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */
1090
        a.size = size - (url_ftell(pb) - start_pos);
1091
        if (a.size > 8) {
1092
            if (mov_read_default(c, pb, a) < 0)
1093
                return -1;
1094
        } else if (a.size > 0)
1095
            url_fskip(pb, a.size);
1096
    }
1097

    
1098
    if(st->codec->codec_type==CODEC_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1)
1099
        st->codec->sample_rate= sc->time_scale;
1100

    
1101
    /* special codec parameters handling */
1102
    switch (st->codec->codec_id) {
1103
#if CONFIG_DV_DEMUXER
1104
    case CODEC_ID_DVAUDIO:
1105
        c->dv_fctx = avformat_alloc_context();
1106
        c->dv_demux = dv_init_demux(c->dv_fctx);
1107
        if (!c->dv_demux) {
1108
            av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
1109
            return -1;
1110
        }
1111
        sc->dv_audio_container = 1;
1112
        st->codec->codec_id = CODEC_ID_PCM_S16LE;
1113
        break;
1114
#endif
1115
    /* no ifdef since parameters are always those */
1116
    case CODEC_ID_QCELP:
1117
        // force sample rate for qcelp when not stored in mov
1118
        if (st->codec->codec_tag != MKTAG('Q','c','l','p'))
1119
            st->codec->sample_rate = 8000;
1120
        st->codec->frame_size= 160;
1121
        st->codec->channels= 1; /* really needed */
1122
        break;
1123
    case CODEC_ID_AMR_NB:
1124
    case CODEC_ID_AMR_WB:
1125
        st->codec->frame_size= sc->samples_per_frame;
1126
        st->codec->channels= 1; /* really needed */
1127
        /* force sample rate for amr, stsd in 3gp does not store sample rate */
1128
        if (st->codec->codec_id == CODEC_ID_AMR_NB)
1129
            st->codec->sample_rate = 8000;
1130
        else if (st->codec->codec_id == CODEC_ID_AMR_WB)
1131
            st->codec->sample_rate = 16000;
1132
        break;
1133
    case CODEC_ID_MP2:
1134
    case CODEC_ID_MP3:
1135
        st->codec->codec_type = CODEC_TYPE_AUDIO; /* force type after stsd for m1a hdlr */
1136
        st->need_parsing = AVSTREAM_PARSE_FULL;
1137
        break;
1138
    case CODEC_ID_GSM:
1139
    case CODEC_ID_ADPCM_MS:
1140
    case CODEC_ID_ADPCM_IMA_WAV:
1141
        st->codec->block_align = sc->bytes_per_frame;
1142
        break;
1143
    case CODEC_ID_ALAC:
1144
        if (st->codec->extradata_size == 36) {
1145
            st->codec->frame_size = AV_RB32(st->codec->extradata+12);
1146
            st->codec->channels   = AV_RB8 (st->codec->extradata+21);
1147
        }
1148
        break;
1149
    default:
1150
        break;
1151
    }
1152

    
1153
    return 0;
1154
}
1155

    
1156
static int mov_read_stsc(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
1157
{
1158
    AVStream *st;
1159
    MOVStreamContext *sc;
1160
    unsigned int i, entries;
1161

    
1162
    if (c->fc->nb_streams < 1)
1163
        return 0;
1164
    st = c->fc->streams[c->fc->nb_streams-1];
1165
    sc = st->priv_data;
1166

    
1167
    get_byte(pb); /* version */
1168
    get_be24(pb); /* flags */
1169

    
1170
    entries = get_be32(pb);
1171

    
1172
    dprintf(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
1173

    
1174
    if(entries >= UINT_MAX / sizeof(*sc->stsc_data))
1175
        return -1;
1176
    sc->stsc_data = av_malloc(entries * sizeof(*sc->stsc_data));
1177
    if (!sc->stsc_data)
1178
        return AVERROR(ENOMEM);
1179
    sc->stsc_count = entries;
1180

    
1181
    for(i=0; i<entries; i++) {
1182
        sc->stsc_data[i].first = get_be32(pb);
1183
        sc->stsc_data[i].count = get_be32(pb);
1184
        sc->stsc_data[i].id = get_be32(pb);
1185
    }
1186
    return 0;
1187
}
1188

    
1189
static int mov_read_stps(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
1190
{
1191
    AVStream *st;
1192
    MOVStreamContext *sc;
1193
    unsigned i, entries;
1194

    
1195
    if (c->fc->nb_streams < 1)
1196
        return 0;
1197
    st = c->fc->streams[c->fc->nb_streams-1];
1198
    sc = st->priv_data;
1199

    
1200
    get_be32(pb); // version + flags
1201

    
1202
    entries = get_be32(pb);
1203
    if (entries >= UINT_MAX / sizeof(*sc->stps_data))
1204
        return -1;
1205
    sc->stps_data = av_malloc(entries * sizeof(*sc->stps_data));
1206
    if (!sc->stps_data)
1207
        return AVERROR(ENOMEM);
1208
    sc->stps_count = entries;
1209

    
1210
    for (i = 0; i < entries; i++) {
1211
        sc->stps_data[i] = get_be32(pb);
1212
        //dprintf(c->fc, "stps %d\n", sc->stps_data[i]);
1213
    }
1214

    
1215
    return 0;
1216
}
1217

    
1218
static int mov_read_stss(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
1219
{
1220
    AVStream *st;
1221
    MOVStreamContext *sc;
1222
    unsigned int i, entries;
1223

    
1224
    if (c->fc->nb_streams < 1)
1225
        return 0;
1226
    st = c->fc->streams[c->fc->nb_streams-1];
1227
    sc = st->priv_data;
1228

    
1229
    get_byte(pb); /* version */
1230
    get_be24(pb); /* flags */
1231

    
1232
    entries = get_be32(pb);
1233

    
1234
    dprintf(c->fc, "keyframe_count = %d\n", entries);
1235

    
1236
    if(entries >= UINT_MAX / sizeof(int))
1237
        return -1;
1238
    sc->keyframes = av_malloc(entries * sizeof(int));
1239
    if (!sc->keyframes)
1240
        return AVERROR(ENOMEM);
1241
    sc->keyframe_count = entries;
1242

    
1243
    for(i=0; i<entries; i++) {
1244
        sc->keyframes[i] = get_be32(pb);
1245
        //dprintf(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
1246
    }
1247
    return 0;
1248
}
1249

    
1250
static int mov_read_stsz(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
1251
{
1252
    AVStream *st;
1253
    MOVStreamContext *sc;
1254
    unsigned int i, entries, sample_size, field_size, num_bytes;
1255
    GetBitContext gb;
1256
    unsigned char* buf;
1257

    
1258
    if (c->fc->nb_streams < 1)
1259
        return 0;
1260
    st = c->fc->streams[c->fc->nb_streams-1];
1261
    sc = st->priv_data;
1262

    
1263
    get_byte(pb); /* version */
1264
    get_be24(pb); /* flags */
1265

    
1266
    if (atom.type == MKTAG('s','t','s','z')) {
1267
        sample_size = get_be32(pb);
1268
        if (!sc->sample_size) /* do not overwrite value computed in stsd */
1269
            sc->sample_size = sample_size;
1270
        field_size = 32;
1271
    } else {
1272
        sample_size = 0;
1273
        get_be24(pb); /* reserved */
1274
        field_size = get_byte(pb);
1275
    }
1276
    entries = get_be32(pb);
1277

    
1278
    dprintf(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, entries);
1279

    
1280
    sc->sample_count = entries;
1281
    if (sample_size)
1282
        return 0;
1283

    
1284
    if (field_size != 4 && field_size != 8 && field_size != 16 && field_size != 32) {
1285
        av_log(c->fc, AV_LOG_ERROR, "Invalid sample field size %d\n", field_size);
1286
        return -1;
1287
    }
1288

    
1289
    if (entries >= UINT_MAX / sizeof(int) || entries >= (UINT_MAX - 4) / field_size)
1290
        return -1;
1291
    sc->sample_sizes = av_malloc(entries * sizeof(int));
1292
    if (!sc->sample_sizes)
1293
        return AVERROR(ENOMEM);
1294

    
1295
    num_bytes = (entries*field_size+4)>>3;
1296

    
1297
    buf = av_malloc(num_bytes+FF_INPUT_BUFFER_PADDING_SIZE);
1298
    if (!buf) {
1299
        av_freep(&sc->sample_sizes);
1300
        return AVERROR(ENOMEM);
1301
    }
1302

    
1303
    if (get_buffer(pb, buf, num_bytes) < num_bytes) {
1304
        av_freep(&sc->sample_sizes);
1305
        av_free(buf);
1306
        return -1;
1307
    }
1308

    
1309
    init_get_bits(&gb, buf, 8*num_bytes);
1310

    
1311
    for(i=0; i<entries; i++)
1312
        sc->sample_sizes[i] = get_bits_long(&gb, field_size);
1313

    
1314
    av_free(buf);
1315
    return 0;
1316
}
1317

    
1318
static int mov_read_stts(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
1319
{
1320
    AVStream *st;
1321
    MOVStreamContext *sc;
1322
    unsigned int i, entries;
1323
    int64_t duration=0;
1324
    int64_t total_sample_count=0;
1325

    
1326
    if (c->fc->nb_streams < 1)
1327
        return 0;
1328
    st = c->fc->streams[c->fc->nb_streams-1];
1329
    sc = st->priv_data;
1330

    
1331
    get_byte(pb); /* version */
1332
    get_be24(pb); /* flags */
1333
    entries = get_be32(pb);
1334

    
1335
    dprintf(c->fc, "track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries);
1336

    
1337
    if(entries >= UINT_MAX / sizeof(*sc->stts_data))
1338
        return -1;
1339
    sc->stts_data = av_malloc(entries * sizeof(*sc->stts_data));
1340
    if (!sc->stts_data)
1341
        return AVERROR(ENOMEM);
1342
    sc->stts_count = entries;
1343

    
1344
    for(i=0; i<entries; i++) {
1345
        int sample_duration;
1346
        int sample_count;
1347

    
1348
        sample_count=get_be32(pb);
1349
        sample_duration = get_be32(pb);
1350
        sc->stts_data[i].count= sample_count;
1351
        sc->stts_data[i].duration= sample_duration;
1352

    
1353
        dprintf(c->fc, "sample_count=%d, sample_duration=%d\n",sample_count,sample_duration);
1354

    
1355
        duration+=(int64_t)sample_duration*sample_count;
1356
        total_sample_count+=sample_count;
1357
    }
1358

    
1359
    st->nb_frames= total_sample_count;
1360
    if(duration)
1361
        st->duration= duration;
1362
    return 0;
1363
}
1364

    
1365
static int mov_read_cslg(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
1366
{
1367
    AVStream *st;
1368
    MOVStreamContext *sc;
1369

    
1370
    if (c->fc->nb_streams < 1)
1371
        return 0;
1372
    st = c->fc->streams[c->fc->nb_streams-1];
1373
    sc = st->priv_data;
1374

    
1375
    get_be32(pb); // version + flags
1376

    
1377
    sc->dts_shift = get_be32(pb);
1378
    dprintf(c->fc, "dts shift %d\n", sc->dts_shift);
1379

    
1380
    get_be32(pb); // least dts to pts delta
1381
    get_be32(pb); // greatest dts to pts delta
1382
    get_be32(pb); // pts start
1383
    get_be32(pb); // pts end
1384

    
1385
    return 0;
1386
}
1387

    
1388
static int mov_read_ctts(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
1389
{
1390
    AVStream *st;
1391
    MOVStreamContext *sc;
1392
    unsigned int i, entries;
1393

    
1394
    if (c->fc->nb_streams < 1)
1395
        return 0;
1396
    st = c->fc->streams[c->fc->nb_streams-1];
1397
    sc = st->priv_data;
1398

    
1399
    get_byte(pb); /* version */
1400
    get_be24(pb); /* flags */
1401
    entries = get_be32(pb);
1402

    
1403
    dprintf(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
1404

    
1405
    if(entries >= UINT_MAX / sizeof(*sc->ctts_data))
1406
        return -1;
1407
    sc->ctts_data = av_malloc(entries * sizeof(*sc->ctts_data));
1408
    if (!sc->ctts_data)
1409
        return AVERROR(ENOMEM);
1410
    sc->ctts_count = entries;
1411

    
1412
    for(i=0; i<entries; i++) {
1413
        int count    =get_be32(pb);
1414
        int duration =get_be32(pb);
1415

    
1416
        sc->ctts_data[i].count   = count;
1417
        sc->ctts_data[i].duration= duration;
1418
    }
1419
    return 0;
1420
}
1421

    
1422
static void mov_build_index(MOVContext *mov, AVStream *st)
1423
{
1424
    MOVStreamContext *sc = st->priv_data;
1425
    int64_t current_offset;
1426
    int64_t current_dts = 0;
1427
    unsigned int stts_index = 0;
1428
    unsigned int stsc_index = 0;
1429
    unsigned int stss_index = 0;
1430
    unsigned int stps_index = 0;
1431
    unsigned int i, j;
1432

    
1433
    /* adjust first dts according to edit list */
1434
    if (sc->time_offset) {
1435
        int rescaled = sc->time_offset < 0 ? av_rescale(sc->time_offset, sc->time_scale, mov->time_scale) : sc->time_offset;
1436
        current_dts = -rescaled;
1437
        if (sc->ctts_data && sc->ctts_data[0].duration / sc->stts_data[0].duration > 16) {
1438
            /* more than 16 frames delay, dts are likely wrong
1439
               this happens with files created by iMovie */
1440
            sc->wrong_dts = 1;
1441
            st->codec->has_b_frames = 1;
1442
        }
1443
    }
1444

    
1445
    /* only use old uncompressed audio chunk demuxing when stts specifies it */
1446
    if (!(st->codec->codec_type == CODEC_TYPE_AUDIO &&
1447
          sc->stts_count == 1 && sc->stts_data[0].duration == 1)) {
1448
        unsigned int current_sample = 0;
1449
        unsigned int stts_sample = 0;
1450
        unsigned int sample_size;
1451
        unsigned int distance = 0;
1452
        int key_off = sc->keyframes && sc->keyframes[0] == 1;
1453

    
1454
        current_dts -= sc->dts_shift;
1455

    
1456
        st->nb_frames = sc->sample_count;
1457
        for (i = 0; i < sc->chunk_count; i++) {
1458
            current_offset = sc->chunk_offsets[i];
1459
            if (stsc_index + 1 < sc->stsc_count &&
1460
                i + 1 == sc->stsc_data[stsc_index + 1].first)
1461
                stsc_index++;
1462
            for (j = 0; j < sc->stsc_data[stsc_index].count; j++) {
1463
                int keyframe = 0;
1464
                if (current_sample >= sc->sample_count) {
1465
                    av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
1466
                    return;
1467
                }
1468

    
1469
                if (!sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index]) {
1470
                    keyframe = 1;
1471
                    if (stss_index + 1 < sc->keyframe_count)
1472
                        stss_index++;
1473
                } else if (sc->stps_count && current_sample+key_off == sc->stps_data[stps_index]) {
1474
                    keyframe = 1;
1475
                    if (stps_index + 1 < sc->stps_count)
1476
                        stps_index++;
1477
                }
1478
                if (keyframe)
1479
                    distance = 0;
1480
                sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
1481
                if(sc->pseudo_stream_id == -1 ||
1482
                   sc->stsc_data[stsc_index].id - 1 == sc->pseudo_stream_id) {
1483
                    av_add_index_entry(st, current_offset, current_dts, sample_size, distance,
1484
                                    keyframe ? AVINDEX_KEYFRAME : 0);
1485
                    dprintf(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
1486
                            "size %d, distance %d, keyframe %d\n", st->index, current_sample,
1487
                            current_offset, current_dts, sample_size, distance, keyframe);
1488
                }
1489

    
1490
                current_offset += sample_size;
1491
                current_dts += sc->stts_data[stts_index].duration;
1492
                distance++;
1493
                stts_sample++;
1494
                current_sample++;
1495
                if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
1496
                    stts_sample = 0;
1497
                    stts_index++;
1498
                }
1499
            }
1500
        }
1501
    } else {
1502
        for (i = 0; i < sc->chunk_count; i++) {
1503
            unsigned chunk_samples;
1504

    
1505
            current_offset = sc->chunk_offsets[i];
1506
            if (stsc_index + 1 < sc->stsc_count &&
1507
                i + 1 == sc->stsc_data[stsc_index + 1].first)
1508
                stsc_index++;
1509
            chunk_samples = sc->stsc_data[stsc_index].count;
1510

    
1511
            if (sc->samples_per_frame && chunk_samples % sc->samples_per_frame) {
1512
                av_log(mov->fc, AV_LOG_ERROR, "error unaligned chunk\n");
1513
                return;
1514
            }
1515

    
1516
            while (chunk_samples > 0) {
1517
                unsigned size, samples;
1518

    
1519
                if (sc->samples_per_frame >= 160) { // gsm
1520
                    samples = sc->samples_per_frame;
1521
                    size = sc->bytes_per_frame;
1522
                } else {
1523
                    if (sc->samples_per_frame > 1) {
1524
                        samples = FFMIN((1024 / sc->samples_per_frame)*
1525
                                        sc->samples_per_frame, chunk_samples);
1526
                        size = (samples / sc->samples_per_frame) * sc->bytes_per_frame;
1527
                    } else {
1528
                        samples = FFMIN(1024, chunk_samples);
1529
                        size = samples * sc->sample_size;
1530
                    }
1531
                }
1532

    
1533
                av_add_index_entry(st, current_offset, current_dts, size, 0, AVINDEX_KEYFRAME);
1534
                dprintf(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", "
1535
                        "size %d, duration %d\n", st->index, i, current_offset, current_dts,
1536
                        size, samples);
1537

    
1538
                current_offset += size;
1539
                current_dts += samples;
1540
                chunk_samples -= samples;
1541
            }
1542
        }
1543
    }
1544
}
1545

    
1546
static int mov_read_trak(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
1547
{
1548
    AVStream *st;
1549
    MOVStreamContext *sc;
1550
    int ret;
1551

    
1552
    st = av_new_stream(c->fc, c->fc->nb_streams);
1553
    if (!st) return AVERROR(ENOMEM);
1554
    sc = av_mallocz(sizeof(MOVStreamContext));
1555
    if (!sc) return AVERROR(ENOMEM);
1556

    
1557
    st->priv_data = sc;
1558
    st->codec->codec_type = CODEC_TYPE_DATA;
1559
    sc->ffindex = st->index;
1560

    
1561
    if ((ret = mov_read_default(c, pb, atom)) < 0)
1562
        return ret;
1563

    
1564
    /* sanity checks */
1565
    if (sc->chunk_count && (!sc->stts_count || !sc->stsc_count ||
1566
                            (!sc->sample_size && !sc->sample_count))) {
1567
        av_log(c->fc, AV_LOG_ERROR, "stream %d, missing mandatory atoms, broken header\n",
1568
               st->index);
1569
        return 0;
1570
    }
1571

    
1572
    if (!sc->time_scale)
1573
        sc->time_scale = c->time_scale;
1574

    
1575
    av_set_pts_info(st, 64, 1, sc->time_scale);
1576

    
1577
    if (st->codec->codec_type == CODEC_TYPE_AUDIO &&
1578
        !st->codec->frame_size && sc->stts_count == 1) {
1579
        st->codec->frame_size = av_rescale(sc->stts_data[0].duration,
1580
                                           st->codec->sample_rate, sc->time_scale);
1581
        dprintf(c->fc, "frame size %d\n", st->codec->frame_size);
1582
    }
1583

    
1584
    mov_build_index(c, st);
1585

    
1586
    if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) {
1587
        if (url_fopen(&sc->pb, sc->drefs[sc->dref_id-1].path, URL_RDONLY) < 0)
1588
            av_log(c->fc, AV_LOG_ERROR, "stream %d, error opening file %s: %s\n",
1589
                   st->index, sc->drefs[sc->dref_id-1].path, strerror(errno));
1590
    } else
1591
        sc->pb = c->fc->pb;
1592

    
1593
    switch (st->codec->codec_id) {
1594
#if CONFIG_H261_DECODER
1595
    case CODEC_ID_H261:
1596
#endif
1597
#if CONFIG_H263_DECODER
1598
    case CODEC_ID_H263:
1599
#endif
1600
#if CONFIG_H264_DECODER
1601
    case CODEC_ID_H264:
1602
#endif
1603
#if CONFIG_MPEG4_DECODER
1604
    case CODEC_ID_MPEG4:
1605
#endif
1606
        st->codec->width = 0; /* let decoder init width/height */
1607
        st->codec->height= 0;
1608
        break;
1609
    }
1610

    
1611
    /* Do not need those anymore. */
1612
    av_freep(&sc->chunk_offsets);
1613
    av_freep(&sc->stsc_data);
1614
    av_freep(&sc->sample_sizes);
1615
    av_freep(&sc->keyframes);
1616
    av_freep(&sc->stts_data);
1617
    av_freep(&sc->stps_data);
1618

    
1619
    return 0;
1620
}
1621

    
1622
static int mov_read_ilst(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
1623
{
1624
    int ret;
1625
    c->itunes_metadata = 1;
1626
    ret = mov_read_default(c, pb, atom);
1627
    c->itunes_metadata = 0;
1628
    return ret;
1629
}
1630

    
1631
static int mov_read_meta(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
1632
{
1633
    while (atom.size > 8) {
1634
        uint32_t tag = get_le32(pb);
1635
        atom.size -= 4;
1636
        if (tag == MKTAG('h','d','l','r')) {
1637
            url_fseek(pb, -8, SEEK_CUR);
1638
            atom.size += 8;
1639
            return mov_read_default(c, pb, atom);
1640
        }
1641
    }
1642
    return 0;
1643
}
1644

    
1645
static int mov_read_tkhd(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
1646
{
1647
    int i;
1648
    int width;
1649
    int height;
1650
    int64_t disp_transform[2];
1651
    int display_matrix[3][2];
1652
    AVStream *st;
1653
    MOVStreamContext *sc;
1654
    int version;
1655

    
1656
    if (c->fc->nb_streams < 1)
1657
        return 0;
1658
    st = c->fc->streams[c->fc->nb_streams-1];
1659
    sc = st->priv_data;
1660

    
1661
    version = get_byte(pb);
1662
    get_be24(pb); /* flags */
1663
    /*
1664
    MOV_TRACK_ENABLED 0x0001
1665
    MOV_TRACK_IN_MOVIE 0x0002
1666
    MOV_TRACK_IN_PREVIEW 0x0004
1667
    MOV_TRACK_IN_POSTER 0x0008
1668
    */
1669

    
1670
    if (version == 1) {
1671
        get_be64(pb);
1672
        get_be64(pb);
1673
    } else {
1674
        get_be32(pb); /* creation time */
1675
        get_be32(pb); /* modification time */
1676
    }
1677
    st->id = (int)get_be32(pb); /* track id (NOT 0 !)*/
1678
    get_be32(pb); /* reserved */
1679

    
1680
    /* highlevel (considering edits) duration in movie timebase */
1681
    (version == 1) ? get_be64(pb) : get_be32(pb);
1682
    get_be32(pb); /* reserved */
1683
    get_be32(pb); /* reserved */
1684

    
1685
    get_be16(pb); /* layer */
1686
    get_be16(pb); /* alternate group */
1687
    get_be16(pb); /* volume */
1688
    get_be16(pb); /* reserved */
1689

    
1690
    //read in the display matrix (outlined in ISO 14496-12, Section 6.2.2)
1691
    // they're kept in fixed point format through all calculations
1692
    // ignore u,v,z b/c we don't need the scale factor to calc aspect ratio
1693
    for (i = 0; i < 3; i++) {
1694
        display_matrix[i][0] = get_be32(pb);   // 16.16 fixed point
1695
        display_matrix[i][1] = get_be32(pb);   // 16.16 fixed point
1696
        get_be32(pb);           // 2.30 fixed point (not used)
1697
    }
1698

    
1699
    width = get_be32(pb);       // 16.16 fixed point track width
1700
    height = get_be32(pb);      // 16.16 fixed point track height
1701
    sc->width = width >> 16;
1702
    sc->height = height >> 16;
1703

    
1704
    // transform the display width/height according to the matrix
1705
    // skip this if the display matrix is the default identity matrix
1706
    // or if it is rotating the picture, ex iPhone 3GS
1707
    // to keep the same scale, use [width height 1<<16]
1708
    if (width && height &&
1709
        ((display_matrix[0][0] != 65536  ||
1710
          display_matrix[1][1] != 65536) &&
1711
         !display_matrix[0][1] &&
1712
         !display_matrix[1][0] &&
1713
         !display_matrix[2][0] && !display_matrix[2][1])) {
1714
        for (i = 0; i < 2; i++)
1715
            disp_transform[i] =
1716
                (int64_t)  width  * display_matrix[0][i] +
1717
                (int64_t)  height * display_matrix[1][i] +
1718
                ((int64_t) display_matrix[2][i] << 16);
1719

    
1720
        //sample aspect ratio is new width/height divided by old width/height
1721
        st->sample_aspect_ratio = av_d2q(
1722
            ((double) disp_transform[0] * height) /
1723
            ((double) disp_transform[1] * width), INT_MAX);
1724
    }
1725
    return 0;
1726
}
1727

    
1728
static int mov_read_tfhd(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
1729
{
1730
    MOVFragment *frag = &c->fragment;
1731
    MOVTrackExt *trex = NULL;
1732
    int flags, track_id, i;
1733

    
1734
    get_byte(pb); /* version */
1735
    flags = get_be24(pb);
1736

    
1737
    track_id = get_be32(pb);
1738
    if (!track_id)
1739
        return -1;
1740
    frag->track_id = track_id;
1741
    for (i = 0; i < c->trex_count; i++)
1742
        if (c->trex_data[i].track_id == frag->track_id) {
1743
            trex = &c->trex_data[i];
1744
            break;
1745
        }
1746
    if (!trex) {
1747
        av_log(c->fc, AV_LOG_ERROR, "could not find corresponding trex\n");
1748
        return -1;
1749
    }
1750

    
1751
    if (flags & 0x01) frag->base_data_offset = get_be64(pb);
1752
    else              frag->base_data_offset = frag->moof_offset;
1753
    if (flags & 0x02) frag->stsd_id          = get_be32(pb);
1754
    else              frag->stsd_id          = trex->stsd_id;
1755

    
1756
    frag->duration = flags & 0x08 ? get_be32(pb) : trex->duration;
1757
    frag->size     = flags & 0x10 ? get_be32(pb) : trex->size;
1758
    frag->flags    = flags & 0x20 ? get_be32(pb) : trex->flags;
1759
    dprintf(c->fc, "frag flags 0x%x\n", frag->flags);
1760
    return 0;
1761
}
1762

    
1763
static int mov_read_trex(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
1764
{
1765
    MOVTrackExt *trex;
1766

    
1767
    if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data))
1768
        return -1;
1769
    trex = av_realloc(c->trex_data, (c->trex_count+1)*sizeof(*c->trex_data));
1770
    if (!trex)
1771
        return AVERROR(ENOMEM);
1772
    c->trex_data = trex;
1773
    trex = &c->trex_data[c->trex_count++];
1774
    get_byte(pb); /* version */
1775
    get_be24(pb); /* flags */
1776
    trex->track_id = get_be32(pb);
1777
    trex->stsd_id  = get_be32(pb);
1778
    trex->duration = get_be32(pb);
1779
    trex->size     = get_be32(pb);
1780
    trex->flags    = get_be32(pb);
1781
    return 0;
1782
}
1783

    
1784
static int mov_read_trun(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
1785
{
1786
    MOVFragment *frag = &c->fragment;
1787
    AVStream *st = NULL;
1788
    MOVStreamContext *sc;
1789
    uint64_t offset;
1790
    int64_t dts;
1791
    int data_offset = 0;
1792
    unsigned entries, first_sample_flags = frag->flags;
1793
    int flags, distance, i;
1794

    
1795
    for (i = 0; i < c->fc->nb_streams; i++) {
1796
        if (c->fc->streams[i]->id == frag->track_id) {
1797
            st = c->fc->streams[i];
1798
            break;
1799
        }
1800
    }
1801
    if (!st) {
1802
        av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id);
1803
        return -1;
1804
    }
1805
    sc = st->priv_data;
1806
    if (sc->pseudo_stream_id+1 != frag->stsd_id)
1807
        return 0;
1808
    get_byte(pb); /* version */
1809
    flags = get_be24(pb);
1810
    entries = get_be32(pb);
1811
    dprintf(c->fc, "flags 0x%x entries %d\n", flags, entries);
1812
    if (flags & 0x001) data_offset        = get_be32(pb);
1813
    if (flags & 0x004) first_sample_flags = get_be32(pb);
1814
    if (flags & 0x800) {
1815
        MOVStts *ctts_data;
1816
        if ((uint64_t)entries+sc->ctts_count >= UINT_MAX/sizeof(*sc->ctts_data))
1817
            return -1;
1818
        ctts_data = av_realloc(sc->ctts_data,
1819
                               (entries+sc->ctts_count)*sizeof(*sc->ctts_data));
1820
        if (!ctts_data)
1821
            return AVERROR(ENOMEM);
1822
        sc->ctts_data = ctts_data;
1823
    }
1824
    dts = st->duration;
1825
    offset = frag->base_data_offset + data_offset;
1826
    distance = 0;
1827
    dprintf(c->fc, "first sample flags 0x%x\n", first_sample_flags);
1828
    for (i = 0; i < entries; i++) {
1829
        unsigned sample_size = frag->size;
1830
        int sample_flags = i ? frag->flags : first_sample_flags;
1831
        unsigned sample_duration = frag->duration;
1832
        int keyframe;
1833

    
1834
        if (flags & 0x100) sample_duration = get_be32(pb);
1835
        if (flags & 0x200) sample_size     = get_be32(pb);
1836
        if (flags & 0x400) sample_flags    = get_be32(pb);
1837
        if (flags & 0x800) {
1838
            sc->ctts_data[sc->ctts_count].count = 1;
1839
            sc->ctts_data[sc->ctts_count].duration = get_be32(pb);
1840
            sc->ctts_count++;
1841
        }
1842
        if ((keyframe = st->codec->codec_type == CODEC_TYPE_AUDIO ||
1843
             (flags & 0x004 && !i && !sample_flags) || sample_flags & 0x2000000))
1844
            distance = 0;
1845
        av_add_index_entry(st, offset, dts, sample_size, distance,
1846
                           keyframe ? AVINDEX_KEYFRAME : 0);
1847
        dprintf(c->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
1848
                "size %d, distance %d, keyframe %d\n", st->index, sc->sample_count+i,
1849
                offset, dts, sample_size, distance, keyframe);
1850
        distance++;
1851
        dts += sample_duration;
1852
        offset += sample_size;
1853
    }
1854
    frag->moof_offset = offset;
1855
    st->duration = dts;
1856
    return 0;
1857
}
1858

    
1859
/* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
1860
/* like the files created with Adobe Premiere 5.0, for samples see */
1861
/* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
1862
static int mov_read_wide(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
1863
{
1864
    int err;
1865

    
1866
    if (atom.size < 8)
1867
        return 0; /* continue */
1868
    if (get_be32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
1869
        url_fskip(pb, atom.size - 4);
1870
        return 0;
1871
    }
1872
    atom.type = get_le32(pb);
1873
    atom.offset += 8;
1874
    atom.size -= 8;
1875
    if (atom.type != MKTAG('m','d','a','t')) {
1876
        url_fskip(pb, atom.size);
1877
        return 0;
1878
    }
1879
    err = mov_read_mdat(c, pb, atom);
1880
    return err;
1881
}
1882

    
1883
static int mov_read_cmov(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
1884
{
1885
#if CONFIG_ZLIB
1886
    ByteIOContext ctx;
1887
    uint8_t *cmov_data;
1888
    uint8_t *moov_data; /* uncompressed data */
1889
    long cmov_len, moov_len;
1890
    int ret = -1;
1891

    
1892
    get_be32(pb); /* dcom atom */
1893
    if (get_le32(pb) != MKTAG('d','c','o','m'))
1894
        return -1;
1895
    if (get_le32(pb) != MKTAG('z','l','i','b')) {
1896
        av_log(c->fc, AV_LOG_ERROR, "unknown compression for cmov atom !");
1897
        return -1;
1898
    }
1899
    get_be32(pb); /* cmvd atom */
1900
    if (get_le32(pb) != MKTAG('c','m','v','d'))
1901
        return -1;
1902
    moov_len = get_be32(pb); /* uncompressed size */
1903
    cmov_len = atom.size - 6 * 4;
1904

    
1905
    cmov_data = av_malloc(cmov_len);
1906
    if (!cmov_data)
1907
        return AVERROR(ENOMEM);
1908
    moov_data = av_malloc(moov_len);
1909
    if (!moov_data) {
1910
        av_free(cmov_data);
1911
        return AVERROR(ENOMEM);
1912
    }
1913
    get_buffer(pb, cmov_data, cmov_len);
1914
    if(uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
1915
        goto free_and_return;
1916
    if(init_put_byte(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
1917
        goto free_and_return;
1918
    atom.type = MKTAG('m','o','o','v');
1919
    atom.offset = 0;
1920
    atom.size = moov_len;
1921
#ifdef DEBUG
1922
//    { int fd = open("/tmp/uncompheader.mov", O_WRONLY | O_CREAT); write(fd, moov_data, moov_len); close(fd); }
1923
#endif
1924
    ret = mov_read_default(c, &ctx, atom);
1925
free_and_return:
1926
    av_free(moov_data);
1927
    av_free(cmov_data);
1928
    return ret;
1929
#else
1930
    av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
1931
    return -1;
1932
#endif
1933
}
1934

    
1935
/* edit list atom */
1936
static int mov_read_elst(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
1937
{
1938
    MOVStreamContext *sc;
1939
    int i, edit_count;
1940

    
1941
    if (c->fc->nb_streams < 1)
1942
        return 0;
1943
    sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
1944

    
1945
    get_byte(pb); /* version */
1946
    get_be24(pb); /* flags */
1947
    edit_count = get_be32(pb); /* entries */
1948

    
1949
    if((uint64_t)edit_count*12+8 > atom.size)
1950
        return -1;
1951

    
1952
    for(i=0; i<edit_count; i++){
1953
        int time;
1954
        int duration = get_be32(pb); /* Track duration */
1955
        time = get_be32(pb); /* Media time */
1956
        get_be32(pb); /* Media rate */
1957
        if (i == 0 && time >= -1) {
1958
            sc->time_offset = time != -1 ? time : -duration;
1959
        }
1960
    }
1961

    
1962
    if(edit_count > 1)
1963
        av_log(c->fc, AV_LOG_WARNING, "multiple edit list entries, "
1964
               "a/v desync might occur, patch welcome\n");
1965

    
1966
    dprintf(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, edit_count);
1967
    return 0;
1968
}
1969

    
1970
static const MOVParseTableEntry mov_default_parse_table[] = {
1971
{ MKTAG('a','v','s','s'), mov_read_extradata },
1972
{ MKTAG('c','o','6','4'), mov_read_stco },
1973
{ MKTAG('c','s','l','g'), mov_read_cslg },
1974
{ MKTAG('c','t','t','s'), mov_read_ctts }, /* composition time to sample */
1975
{ MKTAG('d','i','n','f'), mov_read_default },
1976
{ MKTAG('d','r','e','f'), mov_read_dref },
1977
{ MKTAG('e','d','t','s'), mov_read_default },
1978
{ MKTAG('e','l','s','t'), mov_read_elst },
1979
{ MKTAG('e','n','d','a'), mov_read_enda },
1980
{ MKTAG('f','i','e','l'), mov_read_extradata },
1981
{ MKTAG('f','t','y','p'), mov_read_ftyp },
1982
{ MKTAG('g','l','b','l'), mov_read_glbl },
1983
{ MKTAG('h','d','l','r'), mov_read_hdlr },
1984
{ MKTAG('i','l','s','t'), mov_read_ilst },
1985
{ MKTAG('j','p','2','h'), mov_read_extradata },
1986
{ MKTAG('m','d','a','t'), mov_read_mdat },
1987
{ MKTAG('m','d','h','d'), mov_read_mdhd },
1988
{ MKTAG('m','d','i','a'), mov_read_default },
1989
{ MKTAG('m','e','t','a'), mov_read_meta },
1990
{ MKTAG('m','i','n','f'), mov_read_default },
1991
{ MKTAG('m','o','o','f'), mov_read_moof },
1992
{ MKTAG('m','o','o','v'), mov_read_moov },
1993
{ MKTAG('m','v','e','x'), mov_read_default },
1994
{ MKTAG('m','v','h','d'), mov_read_mvhd },
1995
{ MKTAG('S','M','I',' '), mov_read_smi }, /* Sorenson extension ??? */
1996
{ MKTAG('a','l','a','c'), mov_read_extradata }, /* alac specific atom */
1997
{ MKTAG('a','v','c','C'), mov_read_glbl },
1998
{ MKTAG('p','a','s','p'), mov_read_pasp },
1999
{ MKTAG('s','t','b','l'), mov_read_default },
2000
{ MKTAG('s','t','c','o'), mov_read_stco },
2001
{ MKTAG('s','t','p','s'), mov_read_stps },
2002
{ MKTAG('s','t','s','c'), mov_read_stsc },
2003
{ MKTAG('s','t','s','d'), mov_read_stsd }, /* sample description */
2004
{ MKTAG('s','t','s','s'), mov_read_stss }, /* sync sample */
2005
{ MKTAG('s','t','s','z'), mov_read_stsz }, /* sample size */
2006
{ MKTAG('s','t','t','s'), mov_read_stts },
2007
{ MKTAG('s','t','z','2'), mov_read_stsz }, /* compact sample size */
2008
{ MKTAG('t','k','h','d'), mov_read_tkhd }, /* track header */
2009
{ MKTAG('t','f','h','d'), mov_read_tfhd }, /* track fragment header */
2010
{ MKTAG('t','r','a','k'), mov_read_trak },
2011
{ MKTAG('t','r','a','f'), mov_read_default },
2012
{ MKTAG('t','r','e','x'), mov_read_trex },
2013
{ MKTAG('t','r','u','n'), mov_read_trun },
2014
{ MKTAG('u','d','t','a'), mov_read_default },
2015
{ MKTAG('w','a','v','e'), mov_read_wave },
2016
{ MKTAG('e','s','d','s'), mov_read_esds },
2017
{ MKTAG('w','i','d','e'), mov_read_wide }, /* place holder */
2018
{ MKTAG('c','m','o','v'), mov_read_cmov },
2019
{ 0, NULL }
2020
};
2021

    
2022
static int mov_probe(AVProbeData *p)
2023
{
2024
    unsigned int offset;
2025
    uint32_t tag;
2026
    int score = 0;
2027

    
2028
    /* check file header */
2029
    offset = 0;
2030
    for(;;) {
2031
        /* ignore invalid offset */
2032
        if ((offset + 8) > (unsigned int)p->buf_size)
2033
            return score;
2034
        tag = AV_RL32(p->buf + offset + 4);
2035
        switch(tag) {
2036
        /* check for obvious tags */
2037
        case MKTAG('j','P',' ',' '): /* jpeg 2000 signature */
2038
        case MKTAG('m','o','o','v'):
2039
        case MKTAG('m','d','a','t'):
2040
        case MKTAG('p','n','o','t'): /* detect movs with preview pics like ew.mov and april.mov */
2041
        case MKTAG('u','d','t','a'): /* Packet Video PVAuthor adds this and a lot of more junk */
2042
        case MKTAG('f','t','y','p'):
2043
            return AVPROBE_SCORE_MAX;
2044
        /* those are more common words, so rate then a bit less */
2045
        case MKTAG('e','d','i','w'): /* xdcam files have reverted first tags */
2046
        case MKTAG('w','i','d','e'):
2047
        case MKTAG('f','r','e','e'):
2048
        case MKTAG('j','u','n','k'):
2049
        case MKTAG('p','i','c','t'):
2050
            return AVPROBE_SCORE_MAX - 5;
2051
        case MKTAG(0x82,0x82,0x7f,0x7d):
2052
        case MKTAG('s','k','i','p'):
2053
        case MKTAG('u','u','i','d'):
2054
        case MKTAG('p','r','f','l'):
2055
            offset = AV_RB32(p->buf+offset) + offset;
2056
            /* if we only find those cause probedata is too small at least rate them */
2057
            score = AVPROBE_SCORE_MAX - 50;
2058
            break;
2059
        default:
2060
            /* unrecognized tag */
2061
            return score;
2062
        }
2063
    }
2064
    return score;
2065
}
2066

    
2067
static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
2068
{
2069
    MOVContext *mov = s->priv_data;
2070
    ByteIOContext *pb = s->pb;
2071
    int err;
2072
    MOVAtom atom = { 0, 0, 0 };
2073

    
2074
    mov->fc = s;
2075
    /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
2076
    if(!url_is_streamed(pb))
2077
        atom.size = url_fsize(pb);
2078
    else
2079
        atom.size = INT64_MAX;
2080

    
2081
    /* check MOV header */
2082
    if ((err = mov_read_default(mov, pb, atom)) < 0) {
2083
        av_log(s, AV_LOG_ERROR, "error reading header: %d\n", err);
2084
        return err;
2085
    }
2086
    if (!mov->found_moov) {
2087
        av_log(s, AV_LOG_ERROR, "moov atom not found\n");
2088
        return -1;
2089
    }
2090
    dprintf(mov->fc, "on_parse_exit_offset=%lld\n", url_ftell(pb));
2091

    
2092
    return 0;
2093
}
2094

    
2095
static AVIndexEntry *mov_find_next_sample(AVFormatContext *s, AVStream **st)
2096
{
2097
    AVIndexEntry *sample = NULL;
2098
    int64_t best_dts = INT64_MAX;
2099
    int i;
2100
    for (i = 0; i < s->nb_streams; i++) {
2101
        AVStream *avst = s->streams[i];
2102
        MOVStreamContext *msc = avst->priv_data;
2103
        if (msc->pb && msc->current_sample < avst->nb_index_entries) {
2104
            AVIndexEntry *current_sample = &avst->index_entries[msc->current_sample];
2105
            int64_t dts = av_rescale(current_sample->timestamp, AV_TIME_BASE, msc->time_scale);
2106
            dprintf(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
2107
            if (!sample || (url_is_streamed(s->pb) && current_sample->pos < sample->pos) ||
2108
                (!url_is_streamed(s->pb) &&
2109
                 ((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb &&
2110
                 ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
2111
                  (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) {
2112
                sample = current_sample;
2113
                best_dts = dts;
2114
                *st = avst;
2115
            }
2116
        }
2117
    }
2118
    return sample;
2119
}
2120

    
2121
static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
2122
{
2123
    MOVContext *mov = s->priv_data;
2124
    MOVStreamContext *sc;
2125
    AVIndexEntry *sample;
2126
    AVStream *st = NULL;
2127
    int ret;
2128
 retry:
2129
    sample = mov_find_next_sample(s, &st);
2130
    if (!sample) {
2131
        mov->found_mdat = 0;
2132
        if (!url_is_streamed(s->pb) ||
2133
            mov_read_default(mov, s->pb, (MOVAtom){ 0, 0, INT64_MAX }) < 0 ||
2134
            url_feof(s->pb))
2135
            return AVERROR_EOF;
2136
        dprintf(s, "read fragments, offset 0x%llx\n", url_ftell(s->pb));
2137
        goto retry;
2138
    }
2139
    sc = st->priv_data;
2140
    /* must be done just before reading, to avoid infinite loop on sample */
2141
    sc->current_sample++;
2142

    
2143
    if (st->discard != AVDISCARD_ALL) {
2144
        if (url_fseek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
2145
            av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
2146
                   sc->ffindex, sample->pos);
2147
            return -1;
2148
        }
2149
        ret = av_get_packet(sc->pb, pkt, sample->size);
2150
        if (ret < 0)
2151
            return ret;
2152
#if CONFIG_DV_DEMUXER
2153
        if (mov->dv_demux && sc->dv_audio_container) {
2154
            dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size);
2155
            av_free(pkt->data);
2156
            pkt->size = 0;
2157
            ret = dv_get_packet(mov->dv_demux, pkt);
2158
            if (ret < 0)
2159
                return ret;
2160
        }
2161
#endif
2162
    }
2163

    
2164
    pkt->stream_index = sc->ffindex;
2165
    pkt->dts = sample->timestamp;
2166
    if (sc->ctts_data) {
2167
        pkt->pts = pkt->dts + sc->dts_shift + sc->ctts_data[sc->ctts_index].duration;
2168
        /* update ctts context */
2169
        sc->ctts_sample++;
2170
        if (sc->ctts_index < sc->ctts_count &&
2171
            sc->ctts_data[sc->ctts_index].count == sc->ctts_sample) {
2172
            sc->ctts_index++;
2173
            sc->ctts_sample = 0;
2174
        }
2175
        if (sc->wrong_dts)
2176
            pkt->dts = AV_NOPTS_VALUE;
2177
    } else {
2178
        int64_t next_dts = (sc->current_sample < st->nb_index_entries) ?
2179
            st->index_entries[sc->current_sample].timestamp : st->duration;
2180
        pkt->duration = next_dts - pkt->dts;
2181
        pkt->pts = pkt->dts;
2182
    }
2183
    if (st->discard == AVDISCARD_ALL)
2184
        goto retry;
2185
    pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? PKT_FLAG_KEY : 0;
2186
    pkt->pos = sample->pos;
2187
    dprintf(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n",
2188
            pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
2189
    return 0;
2190
}
2191

    
2192
static int mov_seek_stream(AVStream *st, int64_t timestamp, int flags)
2193
{
2194
    MOVStreamContext *sc = st->priv_data;
2195
    int sample, time_sample;
2196
    int i;
2197

    
2198
    sample = av_index_search_timestamp(st, timestamp, flags);
2199
    dprintf(st->codec, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
2200
    if (sample < 0) /* not sure what to do */
2201
        return -1;
2202
    sc->current_sample = sample;
2203
    dprintf(st->codec, "stream %d, found sample %d\n", st->index, sc->current_sample);
2204
    /* adjust ctts index */
2205
    if (sc->ctts_data) {
2206
        time_sample = 0;
2207
        for (i = 0; i < sc->ctts_count; i++) {
2208
            int next = time_sample + sc->ctts_data[i].count;
2209
            if (next > sc->current_sample) {
2210
                sc->ctts_index = i;
2211
                sc->ctts_sample = sc->current_sample - time_sample;
2212
                break;
2213
            }
2214
            time_sample = next;
2215
        }
2216
    }
2217
    return sample;
2218
}
2219

    
2220
static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
2221
{
2222
    AVStream *st;
2223
    int64_t seek_timestamp, timestamp;
2224
    int sample;
2225
    int i;
2226

    
2227
    if (stream_index >= s->nb_streams)
2228
        return -1;
2229
    if (sample_time < 0)
2230
        sample_time = 0;
2231

    
2232
    st = s->streams[stream_index];
2233
    sample = mov_seek_stream(st, sample_time, flags);
2234
    if (sample < 0)
2235
        return -1;
2236

    
2237
    /* adjust seek timestamp to found sample timestamp */
2238
    seek_timestamp = st->index_entries[sample].timestamp;
2239

    
2240
    for (i = 0; i < s->nb_streams; i++) {
2241
        st = s->streams[i];
2242
        if (stream_index == i)
2243
            continue;
2244

    
2245
        timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
2246
        mov_seek_stream(st, timestamp, flags);
2247
    }
2248
    return 0;
2249
}
2250

    
2251
static int mov_read_close(AVFormatContext *s)
2252
{
2253
    MOVContext *mov = s->priv_data;
2254
    int i, j;
2255

    
2256
    for (i = 0; i < s->nb_streams; i++) {
2257
        AVStream *st = s->streams[i];
2258
        MOVStreamContext *sc = st->priv_data;
2259

    
2260
        av_freep(&sc->ctts_data);
2261
        for (j = 0; j < sc->drefs_count; j++)
2262
            av_freep(&sc->drefs[j].path);
2263
        av_freep(&sc->drefs);
2264
        if (sc->pb && sc->pb != s->pb)
2265
            url_fclose(sc->pb);
2266

    
2267
        av_freep(&st->codec->palctrl);
2268
    }
2269

    
2270
    if (mov->dv_demux) {
2271
        for(i = 0; i < mov->dv_fctx->nb_streams; i++) {
2272
            av_freep(&mov->dv_fctx->streams[i]->codec);
2273
            av_freep(&mov->dv_fctx->streams[i]);
2274
        }
2275
        av_freep(&mov->dv_fctx);
2276
        av_freep(&mov->dv_demux);
2277
    }
2278

    
2279
    av_freep(&mov->trex_data);
2280

    
2281
    return 0;
2282
}
2283

    
2284
AVInputFormat mov_demuxer = {
2285
    "mov,mp4,m4a,3gp,3g2,mj2",
2286
    NULL_IF_CONFIG_SMALL("QuickTime/MPEG-4/Motion JPEG 2000 format"),
2287
    sizeof(MOVContext),
2288
    mov_probe,
2289
    mov_read_header,
2290
    mov_read_packet,
2291
    mov_read_close,
2292
    mov_read_seek,
2293
};