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ffmpeg / libavformat / mov.c @ eb61405a

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1
/*
2
 * MOV demuxer
3
 * Copyright (c) 2001 Fabrice Bellard.
4
 *
5
 * This file is part of FFmpeg.
6
 *
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 * 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,
13
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * 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

    
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//#define DEBUG
25

    
26
#include "avformat.h"
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#include "riff.h"
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#include "isom.h"
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#include "dv.h"
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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;
69
    int id;
70
} MOV_stsc_t;
71

    
72
typedef struct {
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    uint32_t type;
74
    char *path;
75
} MOV_dref_t;
76

    
77
typedef struct {
78
    uint32_t type;
79
    int64_t offset;
80
    int64_t size; /* total size (excluding the size and type fields) */
81
} MOV_atom_t;
82

    
83
struct MOVParseTableEntry;
84

    
85
typedef struct MOVStreamContext {
86
    ByteIOContext *pb;
87
    int ffindex; /* the ffmpeg stream id */
88
    int next_chunk;
89
    unsigned int chunk_count;
90
    int64_t *chunk_offsets;
91
    unsigned int stts_count;
92
    MOV_stts_t *stts_data;
93
    unsigned int ctts_count;
94
    MOV_stts_t *ctts_data;
95
    unsigned int edit_count; /* number of 'edit' (elst atom) */
96
    unsigned int sample_to_chunk_sz;
97
    MOV_stsc_t *sample_to_chunk;
98
    int sample_to_ctime_index;
99
    int sample_to_ctime_sample;
100
    unsigned int sample_size;
101
    unsigned int sample_count;
102
    int *sample_sizes;
103
    unsigned int keyframe_count;
104
    int *keyframes;
105
    int time_scale;
106
    int time_rate;
107
    int current_sample;
108
    unsigned int bytes_per_frame;
109
    unsigned int samples_per_frame;
110
    int dv_audio_container;
111
    int pseudo_stream_id;
112
    int16_t audio_cid; ///< stsd audio compression id
113
    unsigned drefs_count;
114
    MOV_dref_t *drefs;
115
    int dref_id;
116
} MOVStreamContext;
117

    
118
typedef struct MOVContext {
119
    AVFormatContext *fc;
120
    int time_scale;
121
    int64_t duration; /* duration of the longest track */
122
    int found_moov; /* when both 'moov' and 'mdat' sections has been found */
123
    int found_mdat; /* we suppose we have enough data to read the file */
124
    AVPaletteControl palette_control;
125
    DVDemuxContext *dv_demux;
126
    AVFormatContext *dv_fctx;
127
    int isom; /* 1 if file is ISO Media (mp4/3gp) */
128
} MOVContext;
129

    
130

    
131
/* XXX: it's the first time I make a recursive parser I think... sorry if it's ugly :P */
132

    
133
/* those functions parse an atom */
134
/* return code:
135
 1: found what I wanted, exit
136
 0: continue to parse next atom
137
 -1: error occured, exit
138
 */
139
/* links atom IDs to parse functions */
140
typedef struct MOVParseTableEntry {
141
    uint32_t type;
142
    int (*parse)(MOVContext *ctx, ByteIOContext *pb, MOV_atom_t atom);
143
} MOVParseTableEntry;
144

    
145
static const MOVParseTableEntry mov_default_parse_table[];
146

    
147
static int mov_read_default(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
148
{
149
    int64_t total_size = 0;
150
    MOV_atom_t a;
151
    int i;
152
    int err = 0;
153

    
154
    a.offset = atom.offset;
155

    
156
    if (atom.size < 0)
157
        atom.size = INT64_MAX;
158
    while(((total_size + 8) < atom.size) && !url_feof(pb) && !err) {
159
        a.size = atom.size;
160
        a.type=0;
161
        if(atom.size >= 8) {
162
            a.size = get_be32(pb);
163
            a.type = get_le32(pb);
164
        }
165
        total_size += 8;
166
        a.offset += 8;
167
        dprintf(c->fc, "type: %08x  %.4s  sz: %"PRIx64"  %"PRIx64"   %"PRIx64"\n",
168
                a.type, (char*)&a.type, a.size, atom.size, total_size);
169
        if (a.size == 1) { /* 64 bit extended size */
170
            a.size = get_be64(pb) - 8;
171
            a.offset += 8;
172
            total_size += 8;
173
        }
174
        if (a.size == 0) {
175
            a.size = atom.size - total_size;
176
            if (a.size <= 8)
177
                break;
178
        }
179
        a.size -= 8;
180
        if(a.size < 0)
181
            break;
182
        a.size = FFMIN(a.size, atom.size - total_size);
183

    
184
        for (i = 0; mov_default_parse_table[i].type != 0
185
             && mov_default_parse_table[i].type != a.type; i++)
186
            /* empty */;
187

    
188
        if (mov_default_parse_table[i].type == 0) { /* skip leaf atoms data */
189
            url_fskip(pb, a.size);
190
        } else {
191
            offset_t start_pos = url_ftell(pb);
192
            int64_t left;
193
            err = mov_default_parse_table[i].parse(c, pb, a);
194
            if (c->found_moov && c->found_mdat)
195
                break;
196
            left = a.size - url_ftell(pb) + start_pos;
197
            if (left > 0) /* skip garbage at atom end */
198
                url_fskip(pb, left);
199
        }
200

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

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

    
209
    return err;
210
}
211

    
212
static int mov_read_dref(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
213
{
214
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
215
    MOVStreamContext *sc = st->priv_data;
216
    int entries, i, j;
217

    
218
    get_be32(pb); // version + flags
219
    entries = get_be32(pb);
220
    if (entries >= UINT_MAX / sizeof(*sc->drefs))
221
        return -1;
222
    sc->drefs_count = entries;
223
    sc->drefs = av_mallocz(entries * sizeof(*sc->drefs));
224

    
225
    for (i = 0; i < sc->drefs_count; i++) {
226
        MOV_dref_t *dref = &sc->drefs[i];
227
        uint32_t size = get_be32(pb);
228
        offset_t next = url_ftell(pb) + size - 4;
229

    
230
        dref->type = get_le32(pb);
231
        get_be32(pb); // version + flags
232
        dprintf(c->fc, "type %.4s size %d\n", (char*)&dref->type, size);
233

    
234
        if (dref->type == MKTAG('a','l','i','s') && size > 150) {
235
            /* macintosh alias record */
236
            uint16_t volume_len, len;
237
            char volume[28];
238
            int16_t type;
239

    
240
            url_fskip(pb, 10);
241

    
242
            volume_len = get_byte(pb);
243
            volume_len = FFMIN(volume_len, 27);
244
            get_buffer(pb, volume, 27);
245
            volume[volume_len] = 0;
246
            av_log(c->fc, AV_LOG_DEBUG, "volume %s, len %d\n", volume, volume_len);
247

    
248
            url_fskip(pb, 112);
249

    
250
            for (type = 0; type != -1 && url_ftell(pb) < next; ) {
251
                type = get_be16(pb);
252
                len = get_be16(pb);
253
                av_log(c->fc, AV_LOG_DEBUG, "type %d, len %d\n", type, len);
254
                if (len&1)
255
                    len += 1;
256
                if (type == 2) { // absolute path
257
                    av_free(dref->path);
258
                    dref->path = av_mallocz(len+1);
259
                    if (!dref->path)
260
                        return AVERROR(ENOMEM);
261
                    get_buffer(pb, dref->path, len);
262
                    if (len > volume_len && !strncmp(dref->path, volume, volume_len)) {
263
                        len -= volume_len;
264
                        memmove(dref->path, dref->path+volume_len, len);
265
                        dref->path[len] = 0;
266
                    }
267
                    for (j = 0; j < len; j++)
268
                        if (dref->path[j] == ':')
269
                            dref->path[j] = '/';
270
                    av_log(c->fc, AV_LOG_DEBUG, "path %s\n", dref->path);
271
                } else
272
                    url_fskip(pb, len);
273
            }
274
        }
275
        url_fseek(pb, next, SEEK_SET);
276
    }
277
    return 0;
278
}
279

    
280
static int mov_read_hdlr(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
281
{
282
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
283
    uint32_t type;
284
    uint32_t ctype;
285

    
286
    get_byte(pb); /* version */
287
    get_be24(pb); /* flags */
288

    
289
    /* component type */
290
    ctype = get_le32(pb);
291
    type = get_le32(pb); /* component subtype */
292

    
293
    dprintf(c->fc, "ctype= %c%c%c%c (0x%08x)\n", *((char *)&ctype), ((char *)&ctype)[1],
294
            ((char *)&ctype)[2], ((char *)&ctype)[3], (int) ctype);
295
    dprintf(c->fc, "stype= %c%c%c%c\n",
296
            *((char *)&type), ((char *)&type)[1], ((char *)&type)[2], ((char *)&type)[3]);
297
    if(!ctype)
298
        c->isom = 1;
299
    if(type == MKTAG('v', 'i', 'd', 'e'))
300
        st->codec->codec_type = CODEC_TYPE_VIDEO;
301
    else if(type == MKTAG('s', 'o', 'u', 'n'))
302
        st->codec->codec_type = CODEC_TYPE_AUDIO;
303
    else if(type == MKTAG('m', '1', 'a', ' '))
304
        st->codec->codec_id = CODEC_ID_MP2;
305
    else if(type == MKTAG('s', 'u', 'b', 'p')) {
306
        st->codec->codec_type = CODEC_TYPE_SUBTITLE;
307
    }
308
    get_be32(pb); /* component  manufacture */
309
    get_be32(pb); /* component flags */
310
    get_be32(pb); /* component flags mask */
311

    
312
    if(atom.size <= 24)
313
        return 0; /* nothing left to read */
314

    
315
    url_fskip(pb, atom.size - (url_ftell(pb) - atom.offset));
316
    return 0;
317
}
318

    
319
static int mp4_read_descr_len(ByteIOContext *pb)
320
{
321
    int len = 0;
322
    int count = 4;
323
    while (count--) {
324
        int c = get_byte(pb);
325
        len = (len << 7) | (c & 0x7f);
326
        if (!(c & 0x80))
327
            break;
328
    }
329
    return len;
330
}
331

    
332
static int mp4_read_descr(MOVContext *c, ByteIOContext *pb, int *tag)
333
{
334
    int len;
335
    *tag = get_byte(pb);
336
    len = mp4_read_descr_len(pb);
337
    dprintf(c->fc, "MPEG4 description: tag=0x%02x len=%d\n", *tag, len);
338
    return len;
339
}
340

    
341
#define MP4ESDescrTag                   0x03
342
#define MP4DecConfigDescrTag            0x04
343
#define MP4DecSpecificDescrTag          0x05
344

    
345
static int mov_read_esds(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
346
{
347
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
348
    int tag, len;
349

    
350
    get_be32(pb); /* version + flags */
351
    len = mp4_read_descr(c, pb, &tag);
352
    if (tag == MP4ESDescrTag) {
353
        get_be16(pb); /* ID */
354
        get_byte(pb); /* priority */
355
    } else
356
        get_be16(pb); /* ID */
357

    
358
    len = mp4_read_descr(c, pb, &tag);
359
    if (tag == MP4DecConfigDescrTag) {
360
        int object_type_id = get_byte(pb);
361
        get_byte(pb); /* stream type */
362
        get_be24(pb); /* buffer size db */
363
        get_be32(pb); /* max bitrate */
364
        get_be32(pb); /* avg bitrate */
365

    
366
        st->codec->codec_id= codec_get_id(ff_mp4_obj_type, object_type_id);
367
        dprintf(c->fc, "esds object type id %d\n", object_type_id);
368
        len = mp4_read_descr(c, pb, &tag);
369
        if (tag == MP4DecSpecificDescrTag) {
370
            dprintf(c->fc, "Specific MPEG4 header len=%d\n", len);
371
            if((uint64_t)len > (1<<30))
372
                return -1;
373
            st->codec->extradata = av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
374
            if (!st->codec->extradata)
375
                return AVERROR(ENOMEM);
376
            get_buffer(pb, st->codec->extradata, len);
377
            st->codec->extradata_size = len;
378
            /* from mplayer */
379
            if ((*st->codec->extradata >> 3) == 29) {
380
                st->codec->codec_id = CODEC_ID_MP3ON4;
381
            }
382
        }
383
    }
384
    return 0;
385
}
386

    
387
/* this atom contains actual media data */
388
static int mov_read_mdat(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
389
{
390
    if(atom.size == 0) /* wrong one (MP4) */
391
        return 0;
392
    c->found_mdat=1;
393
    if(c->found_moov)
394
        return 1; /* found both, just go */
395
    url_fskip(pb, atom.size);
396
    return 0; /* now go for moov */
397
}
398

    
399
static int mov_read_ftyp(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
400
{
401
    uint32_t type = get_le32(pb);
402

    
403
    if (type != MKTAG('q','t',' ',' '))
404
        c->isom = 1;
405
    av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
406
    get_be32(pb); /* minor version */
407
    url_fskip(pb, atom.size - 8);
408
    return 0;
409
}
410

    
411
/* this atom should contain all header atoms */
412
static int mov_read_moov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
413
{
414
    if (mov_read_default(c, pb, atom) < 0)
415
        return -1;
416
    /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
417
    /* so we don't parse the whole file if over a network */
418
    c->found_moov=1;
419
    if(c->found_mdat)
420
        return 1; /* found both, just go */
421
    return 0; /* now go for mdat */
422
}
423

    
424

    
425
static int mov_read_mdhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
426
{
427
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
428
    MOVStreamContext *sc = st->priv_data;
429
    int version = get_byte(pb);
430
    int lang;
431

    
432
    if (version > 1)
433
        return 1; /* unsupported */
434

    
435
    get_be24(pb); /* flags */
436
    if (version == 1) {
437
        get_be64(pb);
438
        get_be64(pb);
439
    } else {
440
        get_be32(pb); /* creation time */
441
        get_be32(pb); /* modification time */
442
    }
443

    
444
    sc->time_scale = get_be32(pb);
445
    st->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
446

    
447
    lang = get_be16(pb); /* language */
448
    ff_mov_lang_to_iso639(lang, st->language);
449
    get_be16(pb); /* quality */
450

    
451
    return 0;
452
}
453

    
454
static int mov_read_mvhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
455
{
456
    int version = get_byte(pb); /* version */
457
    get_be24(pb); /* flags */
458

    
459
    if (version == 1) {
460
        get_be64(pb);
461
        get_be64(pb);
462
    } else {
463
        get_be32(pb); /* creation time */
464
        get_be32(pb); /* modification time */
465
    }
466
    c->time_scale = get_be32(pb); /* time scale */
467

    
468
    dprintf(c->fc, "time scale = %i\n", c->time_scale);
469

    
470
    c->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
471
    get_be32(pb); /* preferred scale */
472

    
473
    get_be16(pb); /* preferred volume */
474

    
475
    url_fskip(pb, 10); /* reserved */
476

    
477
    url_fskip(pb, 36); /* display matrix */
478

    
479
    get_be32(pb); /* preview time */
480
    get_be32(pb); /* preview duration */
481
    get_be32(pb); /* poster time */
482
    get_be32(pb); /* selection time */
483
    get_be32(pb); /* selection duration */
484
    get_be32(pb); /* current time */
485
    get_be32(pb); /* next track ID */
486

    
487
    return 0;
488
}
489

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

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

    
497
    // currently SVQ3 decoder expect full STSD header - so let's fake it
498
    // this should be fixed and just SMI header should be passed
499
    av_free(st->codec->extradata);
500
    st->codec->extradata = av_mallocz(atom.size + 0x5a + FF_INPUT_BUFFER_PADDING_SIZE);
501
    if (!st->codec->extradata)
502
        return AVERROR(ENOMEM);
503
    st->codec->extradata_size = 0x5a + atom.size;
504
    memcpy(st->codec->extradata, "SVQ3", 4); // fake
505
    get_buffer(pb, st->codec->extradata + 0x5a, atom.size);
506
    dprintf(c->fc, "Reading SMI %"PRId64"  %s\n", atom.size, st->codec->extradata + 0x5a);
507
    return 0;
508
}
509

    
510
static int mov_read_enda(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
511
{
512
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
513
    int little_endian = get_be16(pb);
514

    
515
    if (little_endian) {
516
        switch (st->codec->codec_id) {
517
        case CODEC_ID_PCM_S24BE:
518
            st->codec->codec_id = CODEC_ID_PCM_S24LE;
519
            break;
520
        case CODEC_ID_PCM_S32BE:
521
            st->codec->codec_id = CODEC_ID_PCM_S32LE;
522
            break;
523
        default:
524
            break;
525
        }
526
    }
527
    return 0;
528
}
529

    
530
/* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
531
static int mov_read_extradata(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
532
{
533
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
534
    uint64_t size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
535
    uint8_t *buf;
536
    if(size > INT_MAX || (uint64_t)atom.size > INT_MAX)
537
        return -1;
538
    buf= av_realloc(st->codec->extradata, size);
539
    if(!buf)
540
        return -1;
541
    st->codec->extradata= buf;
542
    buf+= st->codec->extradata_size;
543
    st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE;
544
    AV_WB32(       buf    , atom.size + 8);
545
    AV_WL32(       buf + 4, atom.type);
546
    get_buffer(pb, buf + 8, atom.size);
547
    return 0;
548
}
549

    
550
static int mov_read_wave(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
551
{
552
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
553

    
554
    if((uint64_t)atom.size > (1<<30))
555
        return -1;
556

    
557
    if (st->codec->codec_id == CODEC_ID_QDM2) {
558
        // pass all frma atom to codec, needed at least for QDM2
559
        av_free(st->codec->extradata);
560
        st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
561
        if (!st->codec->extradata)
562
            return AVERROR(ENOMEM);
563
        st->codec->extradata_size = atom.size;
564
        get_buffer(pb, st->codec->extradata, atom.size);
565
    } else if (atom.size > 8) { /* to read frma, esds atoms */
566
        if (mov_read_default(c, pb, atom) < 0)
567
            return -1;
568
    } else
569
        url_fskip(pb, atom.size);
570
    return 0;
571
}
572

    
573
/**
574
 * This function reads atom content and puts data in extradata without tag
575
 * nor size unlike mov_read_extradata.
576
 */
577
static int mov_read_glbl(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
578
{
579
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
580

    
581
    if((uint64_t)atom.size > (1<<30))
582
        return -1;
583

    
584
    av_free(st->codec->extradata);
585
    st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
586
    if (!st->codec->extradata)
587
        return AVERROR(ENOMEM);
588
    st->codec->extradata_size = atom.size;
589
    get_buffer(pb, st->codec->extradata, atom.size);
590
    return 0;
591
}
592

    
593
static int mov_read_stco(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
594
{
595
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
596
    MOVStreamContext *sc = st->priv_data;
597
    unsigned int i, entries;
598

    
599
    get_byte(pb); /* version */
600
    get_be24(pb); /* flags */
601

    
602
    entries = get_be32(pb);
603

    
604
    if(entries >= UINT_MAX/sizeof(int64_t))
605
        return -1;
606

    
607
    sc->chunk_count = entries;
608
    sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
609
    if (!sc->chunk_offsets)
610
        return -1;
611
    if (atom.type == MKTAG('s', 't', 'c', 'o')) {
612
        for(i=0; i<entries; i++) {
613
            sc->chunk_offsets[i] = get_be32(pb);
614
        }
615
    } else if (atom.type == MKTAG('c', 'o', '6', '4')) {
616
        for(i=0; i<entries; i++) {
617
            sc->chunk_offsets[i] = get_be64(pb);
618
        }
619
    } else
620
        return -1;
621

    
622
    return 0;
623
}
624

    
625
static int mov_read_stsd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
626
{
627
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
628
    MOVStreamContext *sc = st->priv_data;
629
    int entries, frames_per_sample;
630
    uint32_t format;
631
    uint8_t codec_name[32];
632

    
633
    /* for palette traversal */
634
    unsigned int color_depth;
635
    unsigned int color_start;
636
    unsigned int color_count;
637
    unsigned int color_end;
638
    int color_index;
639
    int color_dec;
640
    int color_greyscale;
641
    const uint8_t *color_table;
642
    int j, pseudo_stream_id;
643
    unsigned char r, g, b;
644

    
645
    get_byte(pb); /* version */
646
    get_be24(pb); /* flags */
647

    
648
    entries = get_be32(pb);
649

    
650
    for(pseudo_stream_id=0; pseudo_stream_id<entries; pseudo_stream_id++) { //Parsing Sample description table
651
        enum CodecID id;
652
        int dref_id;
653
        MOV_atom_t a = { 0, 0, 0 };
654
        offset_t start_pos = url_ftell(pb);
655
        int size = get_be32(pb); /* size */
656
        format = get_le32(pb); /* data format */
657

    
658
        get_be32(pb); /* reserved */
659
        get_be16(pb); /* reserved */
660
        dref_id = get_be16(pb);
661

    
662
        if (st->codec->codec_tag &&
663
            (c->fc->video_codec_id ? codec_get_id(codec_movvideo_tags, format) != c->fc->video_codec_id
664
                                   : st->codec->codec_tag != MKTAG('j', 'p', 'e', 'g'))
665
           ){
666
            /* Multiple fourcc, we skip JPEG. This is not correct, we should
667
             * export it as a separate AVStream but this needs a few changes
668
             * in the MOV demuxer, patch welcome. */
669
            url_fskip(pb, size - (url_ftell(pb) - start_pos));
670
            continue;
671
        }
672
        sc->pseudo_stream_id= pseudo_stream_id;
673
        sc->dref_id= dref_id;
674

    
675
        st->codec->codec_tag = format;
676
        id = codec_get_id(codec_movaudio_tags, format);
677
        if (id<=0 && (format&0xFFFF) == 'm' + ('s'<<8))
678
            id = codec_get_id(codec_wav_tags, bswap_32(format)&0xFFFF);
679

    
680
        if (st->codec->codec_type != CODEC_TYPE_VIDEO && id > 0) {
681
            st->codec->codec_type = CODEC_TYPE_AUDIO;
682
        } else if (st->codec->codec_type != CODEC_TYPE_AUDIO && /* do not overwrite codec type */
683
                   format && format != MKTAG('m', 'p', '4', 's')) { /* skip old asf mpeg4 tag */
684
            id = codec_get_id(codec_movvideo_tags, format);
685
            if (id <= 0)
686
                id = codec_get_id(codec_bmp_tags, format);
687
            if (id > 0)
688
                st->codec->codec_type = CODEC_TYPE_VIDEO;
689
            else if(st->codec->codec_type == CODEC_TYPE_DATA){
690
                id = codec_get_id(ff_codec_movsubtitle_tags, format);
691
                if(id > 0)
692
                    st->codec->codec_type = CODEC_TYPE_SUBTITLE;
693
            }
694
        }
695

    
696
        dprintf(c->fc, "size=%d 4CC= %c%c%c%c codec_type=%d\n", size,
697
                (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff,
698
                (format >> 24) & 0xff, st->codec->codec_type);
699

    
700
        if(st->codec->codec_type==CODEC_TYPE_VIDEO) {
701
            st->codec->codec_id = id;
702
            get_be16(pb); /* version */
703
            get_be16(pb); /* revision level */
704
            get_be32(pb); /* vendor */
705
            get_be32(pb); /* temporal quality */
706
            get_be32(pb); /* spatial quality */
707

    
708
            st->codec->width = get_be16(pb); /* width */
709
            st->codec->height = get_be16(pb); /* height */
710

    
711
            get_be32(pb); /* horiz resolution */
712
            get_be32(pb); /* vert resolution */
713
            get_be32(pb); /* data size, always 0 */
714
            frames_per_sample = get_be16(pb); /* frames per samples */
715

    
716
            dprintf(c->fc, "frames/samples = %d\n", frames_per_sample);
717

    
718
            get_buffer(pb, codec_name, 32); /* codec name, pascal string (FIXME: true for mp4?) */
719
            if (codec_name[0] <= 31) {
720
                memcpy(st->codec->codec_name, &codec_name[1],codec_name[0]);
721
                st->codec->codec_name[codec_name[0]] = 0;
722
            }
723

    
724
            st->codec->bits_per_sample = get_be16(pb); /* depth */
725
            st->codec->color_table_id = get_be16(pb); /* colortable id */
726
            dprintf(c->fc, "depth %d, ctab id %d\n",
727
                   st->codec->bits_per_sample, st->codec->color_table_id);
728
            /* figure out the palette situation */
729
            color_depth = st->codec->bits_per_sample & 0x1F;
730
            color_greyscale = st->codec->bits_per_sample & 0x20;
731

    
732
            /* if the depth is 2, 4, or 8 bpp, file is palettized */
733
            if ((color_depth == 2) || (color_depth == 4) ||
734
                (color_depth == 8)) {
735
                if (color_greyscale) {
736
                    /* compute the greyscale palette */
737
                    st->codec->bits_per_sample = color_depth;
738
                    color_count = 1 << color_depth;
739
                    color_index = 255;
740
                    color_dec = 256 / (color_count - 1);
741
                    for (j = 0; j < color_count; j++) {
742
                        r = g = b = color_index;
743
                        c->palette_control.palette[j] =
744
                            (r << 16) | (g << 8) | (b);
745
                        color_index -= color_dec;
746
                        if (color_index < 0)
747
                            color_index = 0;
748
                    }
749
                } else if (st->codec->color_table_id & 0x08) {
750
                    /* if flag bit 3 is set, use the default palette */
751
                    color_count = 1 << color_depth;
752
                    if (color_depth == 2)
753
                        color_table = ff_qt_default_palette_4;
754
                    else if (color_depth == 4)
755
                        color_table = ff_qt_default_palette_16;
756
                    else
757
                        color_table = ff_qt_default_palette_256;
758

    
759
                    for (j = 0; j < color_count; j++) {
760
                        r = color_table[j * 4 + 0];
761
                        g = color_table[j * 4 + 1];
762
                        b = color_table[j * 4 + 2];
763
                        c->palette_control.palette[j] =
764
                            (r << 16) | (g << 8) | (b);
765
                    }
766
                } else {
767
                    /* load the palette from the file */
768
                    color_start = get_be32(pb);
769
                    color_count = get_be16(pb);
770
                    color_end = get_be16(pb);
771
                    if ((color_start <= 255) &&
772
                        (color_end <= 255)) {
773
                        for (j = color_start; j <= color_end; j++) {
774
                            /* each R, G, or B component is 16 bits;
775
                             * only use the top 8 bits; skip alpha bytes
776
                             * up front */
777
                            get_byte(pb);
778
                            get_byte(pb);
779
                            r = get_byte(pb);
780
                            get_byte(pb);
781
                            g = get_byte(pb);
782
                            get_byte(pb);
783
                            b = get_byte(pb);
784
                            get_byte(pb);
785
                            c->palette_control.palette[j] =
786
                                (r << 16) | (g << 8) | (b);
787
                        }
788
                    }
789
                }
790
                st->codec->palctrl = &c->palette_control;
791
                st->codec->palctrl->palette_changed = 1;
792
            } else
793
                st->codec->palctrl = NULL;
794
        } else if(st->codec->codec_type==CODEC_TYPE_AUDIO) {
795
            int bits_per_sample;
796
            uint16_t version = get_be16(pb);
797

    
798
            st->codec->codec_id = id;
799
            get_be16(pb); /* revision level */
800
            get_be32(pb); /* vendor */
801

    
802
            st->codec->channels = get_be16(pb);             /* channel count */
803
            dprintf(c->fc, "audio channels %d\n", st->codec->channels);
804
            st->codec->bits_per_sample = get_be16(pb);      /* sample size */
805

    
806
            sc->audio_cid = get_be16(pb);
807
            get_be16(pb); /* packet size = 0 */
808

    
809
            st->codec->sample_rate = ((get_be32(pb) >> 16));
810

    
811
            switch (st->codec->codec_id) {
812
            case CODEC_ID_PCM_S8:
813
            case CODEC_ID_PCM_U8:
814
                if (st->codec->bits_per_sample == 16)
815
                    st->codec->codec_id = CODEC_ID_PCM_S16BE;
816
                break;
817
            case CODEC_ID_PCM_S16LE:
818
            case CODEC_ID_PCM_S16BE:
819
                if (st->codec->bits_per_sample == 8)
820
                    st->codec->codec_id = CODEC_ID_PCM_S8;
821
                else if (st->codec->bits_per_sample == 24)
822
                    st->codec->codec_id = CODEC_ID_PCM_S24BE;
823
                break;
824
            /* set values for old format before stsd version 1 appeared */
825
            case CODEC_ID_MACE3:
826
                sc->samples_per_frame = 6;
827
                sc->bytes_per_frame = 2*st->codec->channels;
828
                break;
829
            case CODEC_ID_MACE6:
830
                sc->samples_per_frame = 6;
831
                sc->bytes_per_frame = 1*st->codec->channels;
832
                break;
833
            case CODEC_ID_ADPCM_IMA_QT:
834
                sc->samples_per_frame = 64;
835
                sc->bytes_per_frame = 34*st->codec->channels;
836
                break;
837
            default:
838
                break;
839
            }
840

    
841
            //Read QT version 1 fields. In version 0 these do not exist.
842
            dprintf(c->fc, "version =%d, isom =%d\n",version,c->isom);
843
            if(!c->isom) {
844
                if(version==1) {
845
                    sc->samples_per_frame = get_be32(pb);
846
                    get_be32(pb); /* bytes per packet */
847
                    sc->bytes_per_frame = get_be32(pb);
848
                    get_be32(pb); /* bytes per sample */
849
                } else if(version==2) {
850
                    get_be32(pb); /* sizeof struct only */
851
                    st->codec->sample_rate = av_int2dbl(get_be64(pb)); /* float 64 */
852
                    st->codec->channels = get_be32(pb);
853
                    get_be32(pb); /* always 0x7F000000 */
854
                    get_be32(pb); /* bits per channel if sound is uncompressed */
855
                    get_be32(pb); /* lcpm format specific flag */
856
                    get_be32(pb); /* bytes per audio packet if constant */
857
                    get_be32(pb); /* lpcm frames per audio packet if constant */
858
                }
859
            }
860

    
861
            bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
862
            if (bits_per_sample) {
863
                st->codec->bits_per_sample = bits_per_sample;
864
                sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
865
            }
866
        } else if(st->codec->codec_type==CODEC_TYPE_SUBTITLE){
867
            st->codec->codec_id= id;
868
        } else {
869
            /* other codec type, just skip (rtp, mp4s, tmcd ...) */
870
            url_fskip(pb, size - (url_ftell(pb) - start_pos));
871
        }
872
        /* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */
873
        a.size = size - (url_ftell(pb) - start_pos);
874
        if (a.size > 8) {
875
            if (mov_read_default(c, pb, a) < 0)
876
                return -1;
877
        } else if (a.size > 0)
878
            url_fskip(pb, a.size);
879
    }
880

    
881
    if(st->codec->codec_type==CODEC_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1)
882
        st->codec->sample_rate= sc->time_scale;
883

    
884
    /* special codec parameters handling */
885
    switch (st->codec->codec_id) {
886
#ifdef CONFIG_DV_DEMUXER
887
    case CODEC_ID_DVAUDIO:
888
        c->dv_fctx = av_alloc_format_context();
889
        c->dv_demux = dv_init_demux(c->dv_fctx);
890
        if (!c->dv_demux) {
891
            av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
892
            return -1;
893
        }
894
        sc->dv_audio_container = 1;
895
        st->codec->codec_id = CODEC_ID_PCM_S16LE;
896
        break;
897
#endif
898
    /* no ifdef since parameters are always those */
899
    case CODEC_ID_AMR_WB:
900
        st->codec->sample_rate= 16000;
901
        st->codec->channels= 1; /* really needed */
902
        break;
903
    case CODEC_ID_AMR_NB:
904
        st->codec->sample_rate= 8000;
905
        st->codec->channels= 1; /* really needed */
906
        break;
907
    case CODEC_ID_MP2:
908
    case CODEC_ID_MP3:
909
        st->codec->codec_type = CODEC_TYPE_AUDIO; /* force type after stsd for m1a hdlr */
910
        st->need_parsing = AVSTREAM_PARSE_FULL;
911
        break;
912
    case CODEC_ID_ADPCM_MS:
913
    case CODEC_ID_ADPCM_IMA_WAV:
914
        st->codec->block_align = sc->bytes_per_frame;
915
        break;
916
    default:
917
        break;
918
    }
919

    
920
    return 0;
921
}
922

    
923
static int mov_read_stsc(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
924
{
925
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
926
    MOVStreamContext *sc = st->priv_data;
927
    unsigned int i, entries;
928

    
929
    get_byte(pb); /* version */
930
    get_be24(pb); /* flags */
931

    
932
    entries = get_be32(pb);
933

    
934
    if(entries >= UINT_MAX / sizeof(MOV_stsc_t))
935
        return -1;
936

    
937
    dprintf(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
938

    
939
    sc->sample_to_chunk_sz = entries;
940
    sc->sample_to_chunk = av_malloc(entries * sizeof(MOV_stsc_t));
941
    if (!sc->sample_to_chunk)
942
        return -1;
943
    for(i=0; i<entries; i++) {
944
        sc->sample_to_chunk[i].first = get_be32(pb);
945
        sc->sample_to_chunk[i].count = get_be32(pb);
946
        sc->sample_to_chunk[i].id = get_be32(pb);
947
    }
948
    return 0;
949
}
950

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

    
957
    get_byte(pb); /* version */
958
    get_be24(pb); /* flags */
959

    
960
    entries = get_be32(pb);
961

    
962
    if(entries >= UINT_MAX / sizeof(int))
963
        return -1;
964

    
965
    sc->keyframe_count = entries;
966

    
967
    dprintf(c->fc, "keyframe_count = %d\n", sc->keyframe_count);
968

    
969
    sc->keyframes = av_malloc(entries * sizeof(int));
970
    if (!sc->keyframes)
971
        return -1;
972
    for(i=0; i<entries; i++) {
973
        sc->keyframes[i] = get_be32(pb);
974
        //dprintf(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
975
    }
976
    return 0;
977
}
978

    
979
static int mov_read_stsz(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
980
{
981
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
982
    MOVStreamContext *sc = st->priv_data;
983
    unsigned int i, entries, sample_size;
984

    
985
    get_byte(pb); /* version */
986
    get_be24(pb); /* flags */
987

    
988
    sample_size = get_be32(pb);
989
    if (!sc->sample_size) /* do not overwrite value computed in stsd */
990
        sc->sample_size = sample_size;
991
    entries = get_be32(pb);
992
    if(entries >= UINT_MAX / sizeof(int))
993
        return -1;
994

    
995
    sc->sample_count = entries;
996
    if (sample_size)
997
        return 0;
998

    
999
    dprintf(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, sc->sample_count);
1000

    
1001
    sc->sample_sizes = av_malloc(entries * sizeof(int));
1002
    if (!sc->sample_sizes)
1003
        return -1;
1004
    for(i=0; i<entries; i++)
1005
        sc->sample_sizes[i] = get_be32(pb);
1006
    return 0;
1007
}
1008

    
1009
static int mov_read_stts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1010
{
1011
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1012
    MOVStreamContext *sc = st->priv_data;
1013
    unsigned int i, entries;
1014
    int64_t duration=0;
1015
    int64_t total_sample_count=0;
1016

    
1017
    get_byte(pb); /* version */
1018
    get_be24(pb); /* flags */
1019
    entries = get_be32(pb);
1020
    if(entries >= UINT_MAX / sizeof(MOV_stts_t))
1021
        return -1;
1022

    
1023
    sc->stts_count = entries;
1024
    sc->stts_data = av_malloc(entries * sizeof(MOV_stts_t));
1025
    if (!sc->stts_data)
1026
        return -1;
1027
    dprintf(c->fc, "track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries);
1028

    
1029
    sc->time_rate=0;
1030

    
1031
    for(i=0; i<entries; i++) {
1032
        int sample_duration;
1033
        int sample_count;
1034

    
1035
        sample_count=get_be32(pb);
1036
        sample_duration = get_be32(pb);
1037
        sc->stts_data[i].count= sample_count;
1038
        sc->stts_data[i].duration= sample_duration;
1039

    
1040
        sc->time_rate= ff_gcd(sc->time_rate, sample_duration);
1041

    
1042
        dprintf(c->fc, "sample_count=%d, sample_duration=%d\n",sample_count,sample_duration);
1043

    
1044
        duration+=(int64_t)sample_duration*sample_count;
1045
        total_sample_count+=sample_count;
1046
    }
1047

    
1048
    st->nb_frames= total_sample_count;
1049
    if(duration)
1050
        st->duration= duration;
1051
    return 0;
1052
}
1053

    
1054
static int mov_read_ctts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1055
{
1056
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1057
    MOVStreamContext *sc = st->priv_data;
1058
    unsigned int i, entries;
1059

    
1060
    get_byte(pb); /* version */
1061
    get_be24(pb); /* flags */
1062
    entries = get_be32(pb);
1063
    if(entries >= UINT_MAX / sizeof(MOV_stts_t))
1064
        return -1;
1065

    
1066
    sc->ctts_count = entries;
1067
    sc->ctts_data = av_malloc(entries * sizeof(MOV_stts_t));
1068
    if (!sc->ctts_data)
1069
        return -1;
1070
    dprintf(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
1071

    
1072
    for(i=0; i<entries; i++) {
1073
        int count    =get_be32(pb);
1074
        int duration =get_be32(pb);
1075

    
1076
        if (duration < 0) {
1077
            av_log(c->fc, AV_LOG_ERROR, "negative ctts, ignoring\n");
1078
            sc->ctts_count = 0;
1079
            url_fskip(pb, 8 * (entries - i - 1));
1080
            break;
1081
        }
1082
        sc->ctts_data[i].count   = count;
1083
        sc->ctts_data[i].duration= duration;
1084

    
1085
        sc->time_rate= ff_gcd(sc->time_rate, duration);
1086
    }
1087
    return 0;
1088
}
1089

    
1090
static void mov_build_index(MOVContext *mov, AVStream *st)
1091
{
1092
    MOVStreamContext *sc = st->priv_data;
1093
    offset_t current_offset;
1094
    int64_t current_dts = 0;
1095
    unsigned int stts_index = 0;
1096
    unsigned int stsc_index = 0;
1097
    unsigned int stss_index = 0;
1098
    unsigned int i, j;
1099

    
1100
    if (sc->sample_sizes || st->codec->codec_type == CODEC_TYPE_VIDEO ||
1101
        sc->audio_cid == -2) {
1102
        unsigned int current_sample = 0;
1103
        unsigned int stts_sample = 0;
1104
        unsigned int keyframe, sample_size;
1105
        unsigned int distance = 0;
1106
        int key_off = sc->keyframes && sc->keyframes[0] == 1;
1107

    
1108
        st->nb_frames = sc->sample_count;
1109
        for (i = 0; i < sc->chunk_count; i++) {
1110
            current_offset = sc->chunk_offsets[i];
1111
            if (stsc_index + 1 < sc->sample_to_chunk_sz &&
1112
                i + 1 == sc->sample_to_chunk[stsc_index + 1].first)
1113
                stsc_index++;
1114
            for (j = 0; j < sc->sample_to_chunk[stsc_index].count; j++) {
1115
                if (current_sample >= sc->sample_count) {
1116
                    av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
1117
                    goto out;
1118
                }
1119
                keyframe = !sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index];
1120
                if (keyframe) {
1121
                    distance = 0;
1122
                    if (stss_index + 1 < sc->keyframe_count)
1123
                        stss_index++;
1124
                }
1125
                sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
1126
                dprintf(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
1127
                        "size %d, distance %d, keyframe %d\n", st->index, current_sample,
1128
                        current_offset, current_dts, sample_size, distance, keyframe);
1129
                if(sc->sample_to_chunk[stsc_index].id - 1 == sc->pseudo_stream_id)
1130
                    av_add_index_entry(st, current_offset, current_dts, sample_size, distance,
1131
                                    keyframe ? AVINDEX_KEYFRAME : 0);
1132
                current_offset += sample_size;
1133
                assert(sc->stts_data[stts_index].duration % sc->time_rate == 0);
1134
                current_dts += sc->stts_data[stts_index].duration / sc->time_rate;
1135
                distance++;
1136
                stts_sample++;
1137
                current_sample++;
1138
                if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
1139
                    stts_sample = 0;
1140
                    stts_index++;
1141
                }
1142
            }
1143
        }
1144
    } else { /* read whole chunk */
1145
        unsigned int chunk_samples, chunk_size, chunk_duration;
1146
        unsigned int frames = 1;
1147
        for (i = 0; i < sc->chunk_count; i++) {
1148
            current_offset = sc->chunk_offsets[i];
1149
            if (stsc_index + 1 < sc->sample_to_chunk_sz &&
1150
                i + 1 == sc->sample_to_chunk[stsc_index + 1].first)
1151
                stsc_index++;
1152
            chunk_samples = sc->sample_to_chunk[stsc_index].count;
1153
            /* get chunk size, beware of alaw/ulaw/mace */
1154
            if (sc->samples_per_frame > 0 &&
1155
                (chunk_samples * sc->bytes_per_frame % sc->samples_per_frame == 0)) {
1156
                if (sc->samples_per_frame < 1024)
1157
                    chunk_size = chunk_samples * sc->bytes_per_frame / sc->samples_per_frame;
1158
                else {
1159
                    chunk_size = sc->bytes_per_frame;
1160
                    frames = chunk_samples / sc->samples_per_frame;
1161
                    chunk_samples = sc->samples_per_frame;
1162
                }
1163
            } else if (sc->sample_size > 1 || st->codec->bits_per_sample == 8) {
1164
                chunk_size = chunk_samples * sc->sample_size;
1165
            } else {
1166
                av_log(mov->fc, AV_LOG_ERROR, "could not determine chunk size, report problem\n");
1167
                goto out;
1168
            }
1169
            for (j = 0; j < frames; j++) {
1170
                av_add_index_entry(st, current_offset, current_dts, chunk_size, 0, AVINDEX_KEYFRAME);
1171
                /* get chunk duration */
1172
                chunk_duration = 0;
1173
                while (chunk_samples > 0) {
1174
                    if (chunk_samples < sc->stts_data[stts_index].count) {
1175
                        chunk_duration += sc->stts_data[stts_index].duration * chunk_samples;
1176
                        sc->stts_data[stts_index].count -= chunk_samples;
1177
                        break;
1178
                    } else {
1179
                        chunk_duration += sc->stts_data[stts_index].duration * chunk_samples;
1180
                        chunk_samples -= sc->stts_data[stts_index].count;
1181
                        if (stts_index + 1 < sc->stts_count)
1182
                            stts_index++;
1183
                    }
1184
                }
1185
                current_offset += sc->bytes_per_frame;
1186
                dprintf(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", size %d, "
1187
                        "duration %d\n", st->index, i, current_offset, current_dts, chunk_size, chunk_duration);
1188
                assert(chunk_duration % sc->time_rate == 0);
1189
                current_dts += chunk_duration / sc->time_rate;
1190
            }
1191
        }
1192
    }
1193
 out:
1194
    /* adjust sample count to avindex entries */
1195
    sc->sample_count = st->nb_index_entries;
1196
}
1197

    
1198
static int mov_read_trak(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1199
{
1200
    AVStream *st;
1201
    MOVStreamContext *sc;
1202
    int ret;
1203

    
1204
    st = av_new_stream(c->fc, c->fc->nb_streams);
1205
    if (!st) return -2;
1206
    sc = av_mallocz(sizeof(MOVStreamContext));
1207
    if (!sc) {
1208
        av_free(st);
1209
        return -1;
1210
    }
1211

    
1212
    st->priv_data = sc;
1213
    st->codec->codec_type = CODEC_TYPE_DATA;
1214
    st->start_time = 0; /* XXX: check */
1215

    
1216
    if ((ret = mov_read_default(c, pb, atom)) < 0)
1217
        return ret;
1218

    
1219
    /* sanity checks */
1220
    if(!sc->stts_count || !sc->chunk_count || !sc->sample_to_chunk_sz ||
1221
       (!sc->sample_size && !sc->sample_count)){
1222
        av_log(c->fc, AV_LOG_ERROR, "missing mandatory atoms, broken header\n");
1223
        sc->sample_count = 0; //ignore track
1224
        return 0;
1225
    }
1226
    if(!sc->time_rate)
1227
        sc->time_rate=1;
1228
    if(!sc->time_scale)
1229
        sc->time_scale= c->time_scale;
1230
    av_set_pts_info(st, 64, sc->time_rate, sc->time_scale);
1231

    
1232
    if (st->codec->codec_type == CODEC_TYPE_AUDIO && sc->stts_count == 1)
1233
        st->codec->frame_size = av_rescale(sc->time_rate, st->codec->sample_rate, sc->time_scale);
1234

    
1235
    if(st->duration != AV_NOPTS_VALUE){
1236
        assert(st->duration % sc->time_rate == 0);
1237
        st->duration /= sc->time_rate;
1238
    }
1239
    sc->ffindex = st->index;
1240
    mov_build_index(c, st);
1241

    
1242
    if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) {
1243
        if (url_fopen(&sc->pb, sc->drefs[sc->dref_id-1].path, URL_RDONLY) < 0)
1244
            av_log(c->fc, AV_LOG_ERROR, "stream %d, error opening external essence: %s\n",
1245
                   st->index, strerror(errno));
1246
    } else
1247
        sc->pb = c->fc->pb;
1248

    
1249
    switch (st->codec->codec_id) {
1250
#ifdef CONFIG_H261_DECODER
1251
    case CODEC_ID_H261:
1252
#endif
1253
#ifdef CONFIG_H263_DECODER
1254
    case CODEC_ID_H263:
1255
#endif
1256
#ifdef CONFIG_MPEG4_DECODER
1257
    case CODEC_ID_MPEG4:
1258
#endif
1259
        st->codec->width= 0; /* let decoder init width/height */
1260
        st->codec->height= 0;
1261
        break;
1262
#ifdef CONFIG_LIBFAAD
1263
    case CODEC_ID_AAC:
1264
#endif
1265
#ifdef CONFIG_VORBIS_DECODER
1266
    case CODEC_ID_VORBIS:
1267
#endif
1268
    case CODEC_ID_MP3ON4:
1269
        st->codec->sample_rate= 0; /* let decoder init parameters properly */
1270
        break;
1271
    }
1272

    
1273
    /* Do not need those anymore. */
1274
    av_freep(&sc->chunk_offsets);
1275
    av_freep(&sc->sample_to_chunk);
1276
    av_freep(&sc->sample_sizes);
1277
    av_freep(&sc->keyframes);
1278
    av_freep(&sc->stts_data);
1279

    
1280
    return 0;
1281
}
1282

    
1283
static void mov_parse_udta_string(ByteIOContext *pb, char *str, int size)
1284
{
1285
    uint16_t str_size = get_be16(pb); /* string length */;
1286

    
1287
    get_be16(pb); /* skip language */
1288
    get_buffer(pb, str, FFMIN(size, str_size));
1289
}
1290

    
1291
static int mov_read_udta(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1292
{
1293
    uint64_t end = url_ftell(pb) + atom.size;
1294

    
1295
    while (url_ftell(pb) + 8 < end) {
1296
        uint32_t tag_size = get_be32(pb);
1297
        uint32_t tag      = get_le32(pb);
1298
        uint64_t next     = url_ftell(pb) + tag_size - 8;
1299

    
1300
        if (next > end) // stop if tag_size is wrong
1301
            break;
1302

    
1303
        switch (tag) {
1304
        case MKTAG(0xa9,'n','a','m'):
1305
            mov_parse_udta_string(pb, c->fc->title,     sizeof(c->fc->title));
1306
            break;
1307
        case MKTAG(0xa9,'w','r','t'):
1308
            mov_parse_udta_string(pb, c->fc->author,    sizeof(c->fc->author));
1309
            break;
1310
        case MKTAG(0xa9,'c','p','y'):
1311
            mov_parse_udta_string(pb, c->fc->copyright, sizeof(c->fc->copyright));
1312
            break;
1313
        case MKTAG(0xa9,'i','n','f'):
1314
            mov_parse_udta_string(pb, c->fc->comment,   sizeof(c->fc->comment));
1315
            break;
1316
        default:
1317
            break;
1318
        }
1319

    
1320
        url_fseek(pb, next, SEEK_SET);
1321
    }
1322

    
1323
    return 0;
1324
}
1325

    
1326
static int mov_read_tkhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1327
{
1328
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1329
    int version = get_byte(pb);
1330

    
1331
    get_be24(pb); /* flags */
1332
    /*
1333
    MOV_TRACK_ENABLED 0x0001
1334
    MOV_TRACK_IN_MOVIE 0x0002
1335
    MOV_TRACK_IN_PREVIEW 0x0004
1336
    MOV_TRACK_IN_POSTER 0x0008
1337
    */
1338

    
1339
    if (version == 1) {
1340
        get_be64(pb);
1341
        get_be64(pb);
1342
    } else {
1343
        get_be32(pb); /* creation time */
1344
        get_be32(pb); /* modification time */
1345
    }
1346
    st->id = (int)get_be32(pb); /* track id (NOT 0 !)*/
1347
    get_be32(pb); /* reserved */
1348
    st->start_time = 0; /* check */
1349
    (version == 1) ? get_be64(pb) : get_be32(pb); /* highlevel (considering edits) duration in movie timebase */
1350
    get_be32(pb); /* reserved */
1351
    get_be32(pb); /* reserved */
1352

    
1353
    get_be16(pb); /* layer */
1354
    get_be16(pb); /* alternate group */
1355
    get_be16(pb); /* volume */
1356
    get_be16(pb); /* reserved */
1357

    
1358
    url_fskip(pb, 36); /* display matrix */
1359

    
1360
    /* those are fixed-point */
1361
    get_be32(pb); /* track width */
1362
    get_be32(pb); /* track height */
1363

    
1364
    return 0;
1365
}
1366

    
1367
/* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
1368
/* like the files created with Adobe Premiere 5.0, for samples see */
1369
/* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
1370
static int mov_read_wide(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1371
{
1372
    int err;
1373

    
1374
    if (atom.size < 8)
1375
        return 0; /* continue */
1376
    if (get_be32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
1377
        url_fskip(pb, atom.size - 4);
1378
        return 0;
1379
    }
1380
    atom.type = get_le32(pb);
1381
    atom.offset += 8;
1382
    atom.size -= 8;
1383
    if (atom.type != MKTAG('m', 'd', 'a', 't')) {
1384
        url_fskip(pb, atom.size);
1385
        return 0;
1386
    }
1387
    err = mov_read_mdat(c, pb, atom);
1388
    return err;
1389
}
1390

    
1391
static int mov_read_cmov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1392
{
1393
#ifdef CONFIG_ZLIB
1394
    ByteIOContext ctx;
1395
    uint8_t *cmov_data;
1396
    uint8_t *moov_data; /* uncompressed data */
1397
    long cmov_len, moov_len;
1398
    int ret;
1399

    
1400
    get_be32(pb); /* dcom atom */
1401
    if (get_le32(pb) != MKTAG( 'd', 'c', 'o', 'm' ))
1402
        return -1;
1403
    if (get_le32(pb) != MKTAG( 'z', 'l', 'i', 'b' )) {
1404
        av_log(NULL, AV_LOG_ERROR, "unknown compression for cmov atom !");
1405
        return -1;
1406
    }
1407
    get_be32(pb); /* cmvd atom */
1408
    if (get_le32(pb) != MKTAG( 'c', 'm', 'v', 'd' ))
1409
        return -1;
1410
    moov_len = get_be32(pb); /* uncompressed size */
1411
    cmov_len = atom.size - 6 * 4;
1412

    
1413
    cmov_data = av_malloc(cmov_len);
1414
    if (!cmov_data)
1415
        return -1;
1416
    moov_data = av_malloc(moov_len);
1417
    if (!moov_data) {
1418
        av_free(cmov_data);
1419
        return -1;
1420
    }
1421
    get_buffer(pb, cmov_data, cmov_len);
1422
    if(uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
1423
        return -1;
1424
    if(init_put_byte(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
1425
        return -1;
1426
    atom.type = MKTAG( 'm', 'o', 'o', 'v' );
1427
    atom.offset = 0;
1428
    atom.size = moov_len;
1429
#ifdef DEBUG
1430
//    { int fd = open("/tmp/uncompheader.mov", O_WRONLY | O_CREAT); write(fd, moov_data, moov_len); close(fd); }
1431
#endif
1432
    ret = mov_read_default(c, &ctx, atom);
1433
    av_free(moov_data);
1434
    av_free(cmov_data);
1435
    return ret;
1436
#else
1437
    av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
1438
    return -1;
1439
#endif
1440
}
1441

    
1442
/* edit list atom */
1443
static int mov_read_elst(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1444
{
1445
    MOVStreamContext *sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
1446
    int i, edit_count;
1447

    
1448
    get_byte(pb); /* version */
1449
    get_be24(pb); /* flags */
1450
    edit_count= sc->edit_count = get_be32(pb);     /* entries */
1451

    
1452
    for(i=0; i<edit_count; i++){
1453
        int time;
1454
        get_be32(pb); /* Track duration */
1455
        time = get_be32(pb); /* Media time */
1456
        get_be32(pb); /* Media rate */
1457
        if (time != 0)
1458
            av_log(c->fc, AV_LOG_WARNING, "edit list not starting at 0, "
1459
                   "a/v desync might occur, patch welcome\n");
1460
    }
1461
    dprintf(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, sc->edit_count);
1462
    return 0;
1463
}
1464

    
1465
static const MOVParseTableEntry mov_default_parse_table[] = {
1466
/* mp4 atoms */
1467
{ MKTAG( 'c', 'o', '6', '4' ), mov_read_stco },
1468
{ MKTAG( 'c', 't', 't', 's' ), mov_read_ctts }, /* composition time to sample */
1469
{ MKTAG( 'd', 'i', 'n', 'f' ), mov_read_default },
1470
{ MKTAG( 'd', 'r', 'e', 'f' ), mov_read_dref },
1471
{ MKTAG( 'e', 'd', 't', 's' ), mov_read_default },
1472
{ MKTAG( 'e', 'l', 's', 't' ), mov_read_elst },
1473
{ MKTAG( 'e', 'n', 'd', 'a' ), mov_read_enda },
1474
{ MKTAG( 'f', 'i', 'e', 'l' ), mov_read_extradata },
1475
{ MKTAG( 'f', 't', 'y', 'p' ), mov_read_ftyp },
1476
{ MKTAG( 'g', 'l', 'b', 'l' ), mov_read_glbl },
1477
{ MKTAG( 'h', 'd', 'l', 'r' ), mov_read_hdlr },
1478
{ MKTAG( 'j', 'p', '2', 'h' ), mov_read_extradata },
1479
{ MKTAG( 'm', 'd', 'a', 't' ), mov_read_mdat },
1480
{ MKTAG( 'm', 'd', 'h', 'd' ), mov_read_mdhd },
1481
{ MKTAG( 'm', 'd', 'i', 'a' ), mov_read_default },
1482
{ MKTAG( 'm', 'i', 'n', 'f' ), mov_read_default },
1483
{ MKTAG( 'm', 'o', 'o', 'v' ), mov_read_moov },
1484
{ MKTAG( 'm', 'v', 'h', 'd' ), mov_read_mvhd },
1485
{ MKTAG( 'S', 'M', 'I', ' ' ), mov_read_smi }, /* Sorenson extension ??? */
1486
{ MKTAG( 'a', 'l', 'a', 'c' ), mov_read_extradata }, /* alac specific atom */
1487
{ MKTAG( 'a', 'v', 'c', 'C' ), mov_read_glbl },
1488
{ MKTAG( 's', 't', 'b', 'l' ), mov_read_default },
1489
{ MKTAG( 's', 't', 'c', 'o' ), mov_read_stco },
1490
{ MKTAG( 's', 't', 's', 'c' ), mov_read_stsc },
1491
{ MKTAG( 's', 't', 's', 'd' ), mov_read_stsd }, /* sample description */
1492
{ MKTAG( 's', 't', 's', 's' ), mov_read_stss }, /* sync sample */
1493
{ MKTAG( 's', 't', 's', 'z' ), mov_read_stsz }, /* sample size */
1494
{ MKTAG( 's', 't', 't', 's' ), mov_read_stts },
1495
{ MKTAG( 't', 'k', 'h', 'd' ), mov_read_tkhd }, /* track header */
1496
{ MKTAG( 't', 'r', 'a', 'k' ), mov_read_trak },
1497
{ MKTAG( 'u', 'd', 't', 'a' ), mov_read_udta },
1498
{ MKTAG( 'w', 'a', 'v', 'e' ), mov_read_wave },
1499
{ MKTAG( 'e', 's', 'd', 's' ), mov_read_esds },
1500
{ MKTAG( 'w', 'i', 'd', 'e' ), mov_read_wide }, /* place holder */
1501
{ MKTAG( 'c', 'm', 'o', 'v' ), mov_read_cmov },
1502
{ 0, NULL }
1503
};
1504

    
1505
/* XXX: is it sufficient ? */
1506
static int mov_probe(AVProbeData *p)
1507
{
1508
    unsigned int offset;
1509
    uint32_t tag;
1510
    int score = 0;
1511

    
1512
    /* check file header */
1513
    offset = 0;
1514
    for(;;) {
1515
        /* ignore invalid offset */
1516
        if ((offset + 8) > (unsigned int)p->buf_size)
1517
            return score;
1518
        tag = AV_RL32(p->buf + offset + 4);
1519
        switch(tag) {
1520
        /* check for obvious tags */
1521
        case MKTAG( 'j', 'P', ' ', ' ' ): /* jpeg 2000 signature */
1522
        case MKTAG( 'm', 'o', 'o', 'v' ):
1523
        case MKTAG( 'm', 'd', 'a', 't' ):
1524
        case MKTAG( 'p', 'n', 'o', 't' ): /* detect movs with preview pics like ew.mov and april.mov */
1525
        case MKTAG( 'u', 'd', 't', 'a' ): /* Packet Video PVAuthor adds this and a lot of more junk */
1526
            return AVPROBE_SCORE_MAX;
1527
        /* those are more common words, so rate then a bit less */
1528
        case MKTAG( 'e', 'd', 'i', 'w' ): /* xdcam files have reverted first tags */
1529
        case MKTAG( 'w', 'i', 'd', 'e' ):
1530
        case MKTAG( 'f', 'r', 'e', 'e' ):
1531
        case MKTAG( 'j', 'u', 'n', 'k' ):
1532
        case MKTAG( 'p', 'i', 'c', 't' ):
1533
            return AVPROBE_SCORE_MAX - 5;
1534
        case MKTAG(0x82,0x82,0x7f,0x7d ):
1535
        case MKTAG( 'f', 't', 'y', 'p' ):
1536
        case MKTAG( 's', 'k', 'i', 'p' ):
1537
        case MKTAG( 'u', 'u', 'i', 'd' ):
1538
            offset = AV_RB32(p->buf+offset) + offset;
1539
            /* if we only find those cause probedata is too small at least rate them */
1540
            score = AVPROBE_SCORE_MAX - 50;
1541
            break;
1542
        default:
1543
            /* unrecognized tag */
1544
            return score;
1545
        }
1546
    }
1547
    return score;
1548
}
1549

    
1550
static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
1551
{
1552
    MOVContext *mov = s->priv_data;
1553
    ByteIOContext *pb = s->pb;
1554
    int err;
1555
    MOV_atom_t atom = { 0, 0, 0 };
1556

    
1557
    mov->fc = s;
1558

    
1559
    if(!url_is_streamed(pb)) /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
1560
        atom.size = url_fsize(pb);
1561
    else
1562
        atom.size = INT64_MAX;
1563

    
1564
    /* check MOV header */
1565
    err = mov_read_default(mov, pb, atom);
1566
    if (err<0 || (!mov->found_moov && !mov->found_mdat)) {
1567
        av_log(s, AV_LOG_ERROR, "mov: header not found !!! (err:%d, moov:%d, mdat:%d) pos:%"PRId64"\n",
1568
                err, mov->found_moov, mov->found_mdat, url_ftell(pb));
1569
        return -1;
1570
    }
1571
    dprintf(mov->fc, "on_parse_exit_offset=%d\n", (int) url_ftell(pb));
1572

    
1573
    return 0;
1574
}
1575

    
1576
static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
1577
{
1578
    MOVContext *mov = s->priv_data;
1579
    MOVStreamContext *sc = 0;
1580
    AVIndexEntry *sample = 0;
1581
    int64_t best_dts = INT64_MAX;
1582
    int i;
1583

    
1584
    for (i = 0; i < s->nb_streams; i++) {
1585
        AVStream *st = s->streams[i];
1586
        MOVStreamContext *msc = st->priv_data;
1587
        if (st->discard != AVDISCARD_ALL && msc->pb && msc->current_sample < msc->sample_count) {
1588
            AVIndexEntry *current_sample = &st->index_entries[msc->current_sample];
1589
            int64_t dts = av_rescale(current_sample->timestamp * (int64_t)msc->time_rate,
1590
                                     AV_TIME_BASE, msc->time_scale);
1591
            dprintf(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
1592
            if (!sample || (url_is_streamed(s->pb) && current_sample->pos < sample->pos) ||
1593
                (!url_is_streamed(s->pb) &&
1594
                 ((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb &&
1595
                 ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
1596
                  (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) {
1597
                sample = current_sample;
1598
                best_dts = dts;
1599
                sc = msc;
1600
            }
1601
        }
1602
    }
1603
    if (!sample)
1604
        return -1;
1605
    /* must be done just before reading, to avoid infinite loop on sample */
1606
    sc->current_sample++;
1607
    if (url_fseek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
1608
        av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
1609
               sc->ffindex, sample->pos);
1610
        return -1;
1611
    }
1612
    av_get_packet(sc->pb, pkt, sample->size);
1613
#ifdef CONFIG_DV_DEMUXER
1614
    if (mov->dv_demux && sc->dv_audio_container) {
1615
        dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size);
1616
        av_free(pkt->data);
1617
        pkt->size = 0;
1618
        if (dv_get_packet(mov->dv_demux, pkt) < 0)
1619
            return -1;
1620
    }
1621
#endif
1622
    pkt->stream_index = sc->ffindex;
1623
    pkt->dts = sample->timestamp;
1624
    if (sc->ctts_data) {
1625
        assert(sc->ctts_data[sc->sample_to_ctime_index].duration % sc->time_rate == 0);
1626
        pkt->pts = pkt->dts + sc->ctts_data[sc->sample_to_ctime_index].duration / sc->time_rate;
1627
        /* update ctts context */
1628
        sc->sample_to_ctime_sample++;
1629
        if (sc->sample_to_ctime_index < sc->ctts_count &&
1630
            sc->ctts_data[sc->sample_to_ctime_index].count == sc->sample_to_ctime_sample) {
1631
            sc->sample_to_ctime_index++;
1632
            sc->sample_to_ctime_sample = 0;
1633
        }
1634
    } else {
1635
        pkt->pts = pkt->dts;
1636
    }
1637
    pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? PKT_FLAG_KEY : 0;
1638
    pkt->pos = sample->pos;
1639
    dprintf(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n",
1640
            pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
1641
    return 0;
1642
}
1643

    
1644
static int mov_seek_stream(AVStream *st, int64_t timestamp, int flags)
1645
{
1646
    MOVStreamContext *sc = st->priv_data;
1647
    int sample, time_sample;
1648
    int i;
1649

    
1650
    sample = av_index_search_timestamp(st, timestamp, flags);
1651
    dprintf(st->codec, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
1652
    if (sample < 0) /* not sure what to do */
1653
        return -1;
1654
    sc->current_sample = sample;
1655
    dprintf(st->codec, "stream %d, found sample %d\n", st->index, sc->current_sample);
1656
    /* adjust ctts index */
1657
    if (sc->ctts_data) {
1658
        time_sample = 0;
1659
        for (i = 0; i < sc->ctts_count; i++) {
1660
            int next = time_sample + sc->ctts_data[i].count;
1661
            if (next > sc->current_sample) {
1662
                sc->sample_to_ctime_index = i;
1663
                sc->sample_to_ctime_sample = sc->current_sample - time_sample;
1664
                break;
1665
            }
1666
            time_sample = next;
1667
        }
1668
    }
1669
    return sample;
1670
}
1671

    
1672
static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
1673
{
1674
    AVStream *st;
1675
    int64_t seek_timestamp, timestamp;
1676
    int sample;
1677
    int i;
1678

    
1679
    if (stream_index >= s->nb_streams)
1680
        return -1;
1681

    
1682
    st = s->streams[stream_index];
1683
    sample = mov_seek_stream(st, sample_time, flags);
1684
    if (sample < 0)
1685
        return -1;
1686

    
1687
    /* adjust seek timestamp to found sample timestamp */
1688
    seek_timestamp = st->index_entries[sample].timestamp;
1689

    
1690
    for (i = 0; i < s->nb_streams; i++) {
1691
        st = s->streams[i];
1692
        if (stream_index == i || st->discard == AVDISCARD_ALL)
1693
            continue;
1694

    
1695
        timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
1696
        mov_seek_stream(st, timestamp, flags);
1697
    }
1698
    return 0;
1699
}
1700

    
1701
static int mov_read_close(AVFormatContext *s)
1702
{
1703
    int i, j;
1704
    MOVContext *mov = s->priv_data;
1705
    for(i=0; i<s->nb_streams; i++) {
1706
        MOVStreamContext *sc = s->streams[i]->priv_data;
1707
        av_freep(&sc->ctts_data);
1708
        for (j=0; j<sc->drefs_count; j++)
1709
            av_freep(&sc->drefs[j].path);
1710
        av_freep(&sc->drefs);
1711
        if (sc->pb && sc->pb != s->pb)
1712
            url_fclose(sc->pb);
1713
    }
1714
    if(mov->dv_demux){
1715
        for(i=0; i<mov->dv_fctx->nb_streams; i++){
1716
            av_freep(&mov->dv_fctx->streams[i]->codec);
1717
            av_freep(&mov->dv_fctx->streams[i]);
1718
        }
1719
        av_freep(&mov->dv_fctx);
1720
        av_freep(&mov->dv_demux);
1721
    }
1722
    return 0;
1723
}
1724

    
1725
AVInputFormat mov_demuxer = {
1726
    "mov,mp4,m4a,3gp,3g2,mj2",
1727
    "QuickTime/MPEG4/Motion JPEG 2000 format",
1728
    sizeof(MOVContext),
1729
    mov_probe,
1730
    mov_read_header,
1731
    mov_read_packet,
1732
    mov_read_close,
1733
    mov_read_seek,
1734
};