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ffmpeg / libavformat / mov.c @ 916bf03a

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

    
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#include <limits.h>
23

    
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//#define DEBUG
25

    
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#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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 *   the exceptions are .mov with zlib compressed headers ('cmov' section). It shouldn't be hard to implement.
42
 *   FIXED, Francois Revol, 07/17/2002
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 * - ffmpeg has nearly none of the usual QuickTime codecs,
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 *   although I succesfully dumped raw and mp3 audio tracks off .mov files.
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 *   Sample QuickTime files with mp3 audio can be found at: http://www.3ivx.com/showcase.html
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 * - .mp4 parsing is still hazardous, although the format really is QuickTime with some minor changes
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 *   (to make .mov parser crash maybe ?), despite what they say in the MPEG FAQ at
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 *   http://mpeg.telecomitalialab.com/faq.htm
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 * - the code is quite ugly... maybe I won't do it recursive next time :-)
50
 * - seek is not supported with files that contain edit list
51
 *
52
 * Funny I didn't know about http://sourceforge.net/projects/qt-ffmpeg/
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 * when coding this :) (it's a writer anyway)
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 *
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 * Reference documents:
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 * http://www.geocities.com/xhelmboyx/quicktime/formats/qtm-layout.txt
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 * Apple:
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 *  http://developer.apple.com/documentation/QuickTime/QTFF/
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 *  http://developer.apple.com/documentation/QuickTime/QTFF/qtff.pdf
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 * QuickTime is a trademark of Apple (AFAIK :))
61
 */
62

    
63
#include "qtpalette.h"
64

    
65

    
66
#undef NDEBUG
67
#include <assert.h>
68

    
69
/* the QuickTime file format is quite convoluted...
70
 * it has lots of index tables, each indexing something in another one...
71
 * Here we just use what is needed to read the chunks
72
 */
73

    
74
typedef struct MOV_sample_to_chunk_tbl {
75
    long first;
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    long count;
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    long id;
78
} MOV_sample_to_chunk_tbl;
79

    
80
typedef struct {
81
    uint32_t type;
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    int64_t offset;
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    int64_t size; /* total size (excluding the size and type fields) */
84
} MOV_atom_t;
85

    
86
typedef struct {
87
    int seed;
88
    int flags;
89
    int size;
90
    void* clrs;
91
} MOV_ctab_t;
92

    
93
typedef struct MOV_mdat_atom_s {
94
    offset_t offset;
95
    int64_t size;
96
} MOV_mdat_atom_t;
97

    
98
typedef struct {
99
    uint8_t  version;
100
    uint32_t flags; // 24bit
101

    
102
    /* 0x03 ESDescrTag */
103
    uint16_t es_id;
104
#define MP4ODescrTag                    0x01
105
#define MP4IODescrTag                   0x02
106
#define MP4ESDescrTag                   0x03
107
#define MP4DecConfigDescrTag            0x04
108
#define MP4DecSpecificDescrTag          0x05
109
#define MP4SLConfigDescrTag             0x06
110
#define MP4ContentIdDescrTag            0x07
111
#define MP4SupplContentIdDescrTag       0x08
112
#define MP4IPIPtrDescrTag               0x09
113
#define MP4IPMPPtrDescrTag              0x0A
114
#define MP4IPMPDescrTag                 0x0B
115
#define MP4RegistrationDescrTag         0x0D
116
#define MP4ESIDIncDescrTag              0x0E
117
#define MP4ESIDRefDescrTag              0x0F
118
#define MP4FileIODescrTag               0x10
119
#define MP4FileODescrTag                0x11
120
#define MP4ExtProfileLevelDescrTag      0x13
121
#define MP4ExtDescrTagsStart            0x80
122
#define MP4ExtDescrTagsEnd              0xFE
123
    uint8_t  stream_priority;
124

    
125
    /* 0x04 DecConfigDescrTag */
126
    uint8_t  object_type_id;
127
    uint8_t  stream_type;
128
    /* XXX: really streamType is
129
     * only 6bit, followed by:
130
     * 1bit  upStream
131
     * 1bit  reserved
132
     */
133
    uint32_t buffer_size_db; // 24
134
    uint32_t max_bitrate;
135
    uint32_t avg_bitrate;
136

    
137
    /* 0x05 DecSpecificDescrTag */
138
    uint8_t  decoder_cfg_len;
139
    uint8_t *decoder_cfg;
140

    
141
    /* 0x06 SLConfigDescrTag */
142
    uint8_t  sl_config_len;
143
    uint8_t *sl_config;
144
} MOV_esds_t;
145

    
146
struct MOVParseTableEntry;
147

    
148
typedef struct MOVStreamContext {
149
    int ffindex; /* the ffmpeg stream id */
150
    long next_chunk;
151
    unsigned int chunk_count;
152
    int64_t *chunk_offsets;
153
    unsigned int stts_count;
154
    Time2Sample *stts_data;
155
    unsigned int ctts_count;
156
    Time2Sample *ctts_data;
157
    unsigned int edit_count; /* number of 'edit' (elst atom) */
158
    unsigned int sample_to_chunk_sz;
159
    MOV_sample_to_chunk_tbl *sample_to_chunk;
160
    int sample_to_ctime_index;
161
    int sample_to_ctime_sample;
162
    unsigned int sample_size;
163
    unsigned int sample_count;
164
    long *sample_sizes;
165
    unsigned int keyframe_count;
166
    long *keyframes;
167
    int time_scale;
168
    int time_rate;
169
    long current_sample;
170
    MOV_esds_t esds;
171
    AVRational sample_size_v1;
172
    int dv_audio_container;
173
} MOVStreamContext;
174

    
175
typedef struct MOVContext {
176
    AVFormatContext *fc;
177
    int time_scale;
178
    int64_t duration; /* duration of the longest track */
179
    int found_moov; /* when both 'moov' and 'mdat' sections has been found */
180
    int found_mdat; /* we suppose we have enough data to read the file */
181
    int64_t mdat_offset;
182
    int total_streams;
183
    MOVStreamContext *streams[MAX_STREAMS];
184

    
185
    int ctab_size;
186
    MOV_ctab_t **ctab;           /* color tables */
187
    const struct MOVParseTableEntry *parse_table; /* could be eventually used to change the table */
188
    /* NOTE: for recursion save to/ restore from local variable! */
189

    
190
    AVPaletteControl palette_control;
191
    MOV_mdat_atom_t *mdat_list;
192
    int mdat_count;
193
    DVDemuxContext *dv_demux;
194
    AVFormatContext *dv_fctx;
195
    int isom; /* 1 if file is ISO Media (mp4/3gp) */
196
} MOVContext;
197

    
198

    
199
/* XXX: it's the first time I make a recursive parser I think... sorry if it's ugly :P */
200

    
201
/* those functions parse an atom */
202
/* return code:
203
 1: found what I wanted, exit
204
 0: continue to parse next atom
205
 -1: error occured, exit
206
 */
207
typedef int (*mov_parse_function)(MOVContext *ctx, ByteIOContext *pb, MOV_atom_t atom);
208

    
209
/* links atom IDs to parse functions */
210
typedef struct MOVParseTableEntry {
211
    uint32_t type;
212
    mov_parse_function func;
213
} MOVParseTableEntry;
214

    
215
static int mov_read_default(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
216
{
217
    int64_t total_size = 0;
218
    MOV_atom_t a;
219
    int i;
220
    int err = 0;
221

    
222
    a.offset = atom.offset;
223

    
224
    if (atom.size < 0)
225
        atom.size = 0x7fffffffffffffffLL;
226
    while(((total_size + 8) < atom.size) && !url_feof(pb) && !err) {
227
        a.size = atom.size;
228
        a.type=0L;
229
        if(atom.size >= 8) {
230
            a.size = get_be32(pb);
231
            a.type = get_le32(pb);
232
        }
233
        total_size += 8;
234
        a.offset += 8;
235
        dprintf(c->fc, "type: %08x  %.4s  sz: %"PRIx64"  %"PRIx64"   %"PRIx64"\n", a.type, (char*)&a.type, a.size, atom.size, total_size);
236
        if (a.size == 1) { /* 64 bit extended size */
237
            a.size = get_be64(pb) - 8;
238
            a.offset += 8;
239
            total_size += 8;
240
        }
241
        if (a.size == 0) {
242
            a.size = atom.size - total_size;
243
            if (a.size <= 8)
244
                break;
245
        }
246
        for (i = 0; c->parse_table[i].type != 0L
247
             && c->parse_table[i].type != a.type; i++)
248
            /* empty */;
249

    
250
        a.size -= 8;
251

    
252
        if(a.size < 0)
253
            break;
254

    
255
        if (c->parse_table[i].type == 0) { /* skip leaf atoms data */
256
            url_fskip(pb, a.size);
257
        } else {
258
            offset_t start_pos = url_ftell(pb);
259
            int64_t left;
260
            err = (c->parse_table[i].func)(c, pb, a);
261
            left = a.size - url_ftell(pb) + start_pos;
262
            if (left > 0) /* skip garbage at atom end */
263
                url_fskip(pb, left);
264
        }
265

    
266
        a.offset += a.size;
267
        total_size += a.size;
268
    }
269

    
270
    if (!err && total_size < atom.size && atom.size < 0x7ffff) {
271
        url_fskip(pb, atom.size - total_size);
272
    }
273

    
274
    return err;
275
}
276

    
277
static int mov_read_ctab(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
278
{
279
#if 1
280
    url_fskip(pb, atom.size); // for now
281
#else
282
    VERY VERY BROKEN, NEVER execute this, needs rewrite
283
    unsigned int len;
284
    MOV_ctab_t *t;
285
    c->ctab = av_realloc(c->ctab, ++c->ctab_size);
286
    t = c->ctab[c->ctab_size];
287
    t->seed = get_be32(pb);
288
    t->flags = get_be16(pb);
289
    t->size = get_be16(pb) + 1;
290
    len = 2 * t->size * 4;
291
    if (len > 0) {
292
        t->clrs = av_malloc(len); // 16bit A R G B
293
        if (t->clrs)
294
            get_buffer(pb, t->clrs, len);
295
    }
296
#endif
297

    
298
    return 0;
299
}
300

    
301
static int mov_read_hdlr(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
302
{
303
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
304
    uint32_t type;
305
    uint32_t ctype;
306

    
307
    get_byte(pb); /* version */
308
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
309

    
310
    /* component type */
311
    ctype = get_le32(pb);
312
    type = get_le32(pb); /* component subtype */
313

    
314
    dprintf(c->fc, "ctype= %c%c%c%c (0x%08lx)\n", *((char *)&ctype), ((char *)&ctype)[1], ((char *)&ctype)[2], ((char *)&ctype)[3], (long) ctype);
315
    dprintf(c->fc, "stype= %c%c%c%c\n", *((char *)&type), ((char *)&type)[1], ((char *)&type)[2], ((char *)&type)[3]);
316
    if(!ctype)
317
        c->isom = 1;
318
    if(type == MKTAG('v', 'i', 'd', 'e'))
319
        st->codec->codec_type = CODEC_TYPE_VIDEO;
320
    else if(type == MKTAG('s', 'o', 'u', 'n'))
321
        st->codec->codec_type = CODEC_TYPE_AUDIO;
322
    else if(type == MKTAG('m', '1', 'a', ' '))
323
        st->codec->codec_id = CODEC_ID_MP2;
324
    else if(type == MKTAG('s', 'u', 'b', 'p')) {
325
        st->codec->codec_type = CODEC_TYPE_SUBTITLE;
326
        st->codec->codec_id = CODEC_ID_DVD_SUBTITLE;
327
    }
328
    get_be32(pb); /* component  manufacture */
329
    get_be32(pb); /* component flags */
330
    get_be32(pb); /* component flags mask */
331

    
332
    if(atom.size <= 24)
333
        return 0; /* nothing left to read */
334

    
335
    url_fskip(pb, atom.size - (url_ftell(pb) - atom.offset));
336
    return 0;
337
}
338

    
339
static int mov_mp4_read_descr_len(ByteIOContext *pb)
340
{
341
    int len = 0;
342
    int count = 4;
343
    while (count--) {
344
        int c = get_byte(pb);
345
        len = (len << 7) | (c & 0x7f);
346
        if (!(c & 0x80))
347
            break;
348
    }
349
    return len;
350
}
351

    
352
static int mov_mp4_read_descr(MOVContext *c, ByteIOContext *pb, int *tag)
353
{
354
    int len;
355
    *tag = get_byte(pb);
356
    len = mov_mp4_read_descr_len(pb);
357
    dprintf(c->fc, "MPEG4 description: tag=0x%02x len=%d\n", *tag, len);
358
    return len;
359
}
360

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

    
367
    /* Well, broken but suffisant for some MP4 streams */
368
    get_be32(pb); /* version + flags */
369
    len = mov_mp4_read_descr(c, pb, &tag);
370
    if (tag == MP4ESDescrTag) {
371
        get_be16(pb); /* ID */
372
        get_byte(pb); /* priority */
373
    } else
374
        get_be16(pb); /* ID */
375

    
376
    len = mov_mp4_read_descr(c, pb, &tag);
377
    if (tag == MP4DecConfigDescrTag) {
378
        sc->esds.object_type_id = get_byte(pb);
379
        sc->esds.stream_type = get_byte(pb);
380
        sc->esds.buffer_size_db = get_be24(pb);
381
        sc->esds.max_bitrate = get_be32(pb);
382
        sc->esds.avg_bitrate = get_be32(pb);
383

    
384
        st->codec->codec_id= codec_get_id(ff_mov_obj_type, sc->esds.object_type_id);
385
        dprintf(c->fc, "esds object type id %d\n", sc->esds.object_type_id);
386
        len = mov_mp4_read_descr(c, pb, &tag);
387
        if (tag == MP4DecSpecificDescrTag) {
388
            dprintf(c->fc, "Specific MPEG4 header len=%d\n", len);
389
            st->codec->extradata = av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
390
            if (st->codec->extradata) {
391
                get_buffer(pb, st->codec->extradata, len);
392
                st->codec->extradata_size = len;
393
                /* from mplayer */
394
                if ((*st->codec->extradata >> 3) == 29) {
395
                    st->codec->codec_id = CODEC_ID_MP3ON4;
396
                }
397
            }
398
        }
399
    }
400
    return 0;
401
}
402

    
403
/* this atom contains actual media data */
404
static int mov_read_mdat(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
405
{
406
    if(atom.size == 0) /* wrong one (MP4) */
407
        return 0;
408
    c->mdat_list = av_realloc(c->mdat_list, (c->mdat_count + 1) * sizeof(*c->mdat_list));
409
    c->mdat_list[c->mdat_count].offset = atom.offset;
410
    c->mdat_list[c->mdat_count].size = atom.size;
411
    c->mdat_count++;
412
    c->found_mdat=1;
413
    c->mdat_offset = atom.offset;
414
    if(c->found_moov)
415
        return 1; /* found both, just go */
416
    url_fskip(pb, atom.size);
417
    return 0; /* now go for moov */
418
}
419

    
420
static int mov_read_ftyp(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
421
{
422
    uint32_t type = get_le32(pb);
423

    
424
    if (type != MKTAG('q','t',' ',' '))
425
        c->isom = 1;
426
    av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
427
    get_be32(pb); /* minor version */
428
    url_fskip(pb, atom.size - 8);
429
    return 0;
430
}
431

    
432
/* this atom should contain all header atoms */
433
static int mov_read_moov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
434
{
435
    int err;
436

    
437
    err = mov_read_default(c, pb, atom);
438
    /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
439
    /* so we don't parse the whole file if over a network */
440
    c->found_moov=1;
441
    if(c->found_mdat)
442
        return 1; /* found both, just go */
443
    return 0; /* now go for mdat */
444
}
445

    
446

    
447
static int mov_read_mdhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
448
{
449
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
450
    MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
451
    int version = get_byte(pb);
452
    int lang;
453

    
454
    if (version > 1)
455
        return 1; /* unsupported */
456

    
457
    get_byte(pb); get_byte(pb);
458
    get_byte(pb); /* flags */
459

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

    
468
    sc->time_scale = get_be32(pb);
469
    st->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
470

    
471
    lang = get_be16(pb); /* language */
472
    ff_mov_lang_to_iso639(lang, st->language);
473
    get_be16(pb); /* quality */
474

    
475
    return 0;
476
}
477

    
478
static int mov_read_mvhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
479
{
480
    int version = get_byte(pb); /* version */
481
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
482

    
483
    if (version == 1) {
484
        get_be64(pb);
485
        get_be64(pb);
486
    } else {
487
        get_be32(pb); /* creation time */
488
        get_be32(pb); /* modification time */
489
    }
490
    c->time_scale = get_be32(pb); /* time scale */
491
#ifdef DEBUG
492
    av_log(NULL, AV_LOG_DEBUG, "time scale = %i\n", c->time_scale);
493
#endif
494
    c->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
495
    get_be32(pb); /* preferred scale */
496

    
497
    get_be16(pb); /* preferred volume */
498

    
499
    url_fskip(pb, 10); /* reserved */
500

    
501
    url_fskip(pb, 36); /* display matrix */
502

    
503
    get_be32(pb); /* preview time */
504
    get_be32(pb); /* preview duration */
505
    get_be32(pb); /* poster time */
506
    get_be32(pb); /* selection time */
507
    get_be32(pb); /* selection duration */
508
    get_be32(pb); /* current time */
509
    get_be32(pb); /* next track ID */
510

    
511
    return 0;
512
}
513

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

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

    
521
    // currently SVQ3 decoder expect full STSD header - so let's fake it
522
    // this should be fixed and just SMI header should be passed
523
    av_free(st->codec->extradata);
524
    st->codec->extradata_size = 0x5a + atom.size;
525
    st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
526

    
527
    if (st->codec->extradata) {
528
        memcpy(st->codec->extradata, "SVQ3", 4); // fake
529
        get_buffer(pb, st->codec->extradata + 0x5a, atom.size);
530
        dprintf(c->fc, "Reading SMI %"PRId64"  %s\n", atom.size, st->codec->extradata + 0x5a);
531
    } else
532
        url_fskip(pb, atom.size);
533

    
534
    return 0;
535
}
536

    
537
static int mov_read_enda(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
538
{
539
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
540
    int little_endian = get_be16(pb);
541

    
542
    if (little_endian) {
543
        switch (st->codec->codec_id) {
544
        case CODEC_ID_PCM_S24BE:
545
            st->codec->codec_id = CODEC_ID_PCM_S24LE;
546
            break;
547
        case CODEC_ID_PCM_S32BE:
548
            st->codec->codec_id = CODEC_ID_PCM_S32LE;
549
            break;
550
        default:
551
            break;
552
        }
553
    }
554
    return 0;
555
}
556

    
557
/* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
558
static int mov_read_extradata(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
559
{
560
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
561
    if((uint64_t)atom.size > (1<<30))
562
        return -1;
563
    av_free(st->codec->extradata);
564
    st->codec->extradata_size = atom.size + 8;
565
    st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
566
    if (st->codec->extradata) {
567
        AV_WL32(st->codec->extradata + 4, atom.type);
568
        get_buffer(pb, st->codec->extradata + 8, atom.size);
569
    } else
570
        url_fskip(pb, atom.size);
571
    return 0;
572
}
573

    
574
static int mov_read_wave(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
575
{
576
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
577

    
578
    if((uint64_t)atom.size > (1<<30))
579
        return -1;
580

    
581
    if (st->codec->codec_id == CODEC_ID_QDM2) {
582
        // pass all frma atom to codec, needed at least for QDM2
583
        av_free(st->codec->extradata);
584
        st->codec->extradata_size = atom.size;
585
        st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
586

    
587
        if (st->codec->extradata) {
588
            get_buffer(pb, st->codec->extradata, atom.size);
589
        } else
590
            url_fskip(pb, atom.size);
591
    } else if (atom.size > 8) { /* to read frma, esds atoms */
592
        mov_read_default(c, pb, atom);
593
    } else
594
        url_fskip(pb, atom.size);
595
    return 0;
596
}
597

    
598
static int mov_read_avcC(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
599
{
600
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
601

    
602
    if((uint64_t)atom.size > (1<<30))
603
        return -1;
604

    
605
    av_free(st->codec->extradata);
606

    
607
    st->codec->extradata_size = atom.size;
608
    st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
609

    
610
    if (st->codec->extradata) {
611
        get_buffer(pb, st->codec->extradata, atom.size);
612
    } else
613
        url_fskip(pb, atom.size);
614

    
615
    return 0;
616
}
617

    
618
static int mov_read_stco(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
619
{
620
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
621
    MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
622
    unsigned int i, entries;
623

    
624
    get_byte(pb); /* version */
625
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
626

    
627
    entries = get_be32(pb);
628

    
629
    if(entries >= UINT_MAX/sizeof(int64_t))
630
        return -1;
631

    
632
    sc->chunk_count = entries;
633
    sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
634
    if (!sc->chunk_offsets)
635
        return -1;
636
    if (atom.type == MKTAG('s', 't', 'c', 'o')) {
637
        for(i=0; i<entries; i++) {
638
            sc->chunk_offsets[i] = get_be32(pb);
639
        }
640
    } else if (atom.type == MKTAG('c', 'o', '6', '4')) {
641
        for(i=0; i<entries; i++) {
642
            sc->chunk_offsets[i] = get_be64(pb);
643
        }
644
    } else
645
        return -1;
646

    
647
    return 0;
648
}
649

    
650
static int mov_read_stsd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
651
{
652
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
653
    MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
654
    int entries, frames_per_sample;
655
    uint32_t format;
656
    uint8_t codec_name[32];
657

    
658
    /* for palette traversal */
659
    int color_depth;
660
    int color_start;
661
    int color_count;
662
    int color_end;
663
    int color_index;
664
    int color_dec;
665
    int color_greyscale;
666
    unsigned char *color_table;
667
    int j;
668
    unsigned char r, g, b;
669

    
670
    get_byte(pb); /* version */
671
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
672

    
673
    entries = get_be32(pb);
674

    
675
    while(entries--) { //Parsing Sample description table
676
        enum CodecID id;
677
        MOV_atom_t a = { 0, 0, 0 };
678
        offset_t start_pos = url_ftell(pb);
679
        int size = get_be32(pb); /* size */
680
        format = get_le32(pb); /* data format */
681

    
682
        get_be32(pb); /* reserved */
683
        get_be16(pb); /* reserved */
684
        get_be16(pb); /* index */
685

    
686
        if (st->codec->codec_tag) {
687
            /* multiple fourcc, just skip for now */
688
            url_fskip(pb, size - (url_ftell(pb) - start_pos));
689
            continue;
690
        }
691

    
692
        st->codec->codec_tag = format;
693
        id = codec_get_id(codec_movaudio_tags, format);
694
        if (st->codec->codec_type != CODEC_TYPE_VIDEO && id > 0) {
695
            st->codec->codec_type = CODEC_TYPE_AUDIO;
696
        } else if (st->codec->codec_type != CODEC_TYPE_AUDIO && /* do not overwrite codec type */
697
                   format && format != MKTAG('m', 'p', '4', 's')) { /* skip old asf mpeg4 tag */
698
            id = codec_get_id(codec_movvideo_tags, format);
699
            if (id <= 0)
700
                id = codec_get_id(codec_bmp_tags, format);
701
            if (id > 0)
702
                st->codec->codec_type = CODEC_TYPE_VIDEO;
703
        }
704

    
705
        dprintf(c->fc, "size=%d 4CC= %c%c%c%c codec_type=%d\n",
706
                size,
707
                (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff, (format >> 24) & 0xff,
708
                st->codec->codec_type);
709

    
710
        if(st->codec->codec_type==CODEC_TYPE_VIDEO) {
711
            st->codec->codec_id = id;
712
            get_be16(pb); /* version */
713
            get_be16(pb); /* revision level */
714
            get_be32(pb); /* vendor */
715
            get_be32(pb); /* temporal quality */
716
            get_be32(pb); /* spacial quality */
717

    
718
            st->codec->width = get_be16(pb); /* width */
719
            st->codec->height = get_be16(pb); /* height */
720

    
721
            get_be32(pb); /* horiz resolution */
722
            get_be32(pb); /* vert resolution */
723
            get_be32(pb); /* data size, always 0 */
724
            frames_per_sample = get_be16(pb); /* frames per samples */
725
#ifdef DEBUG
726
            av_log(NULL, AV_LOG_DEBUG, "frames/samples = %d\n", frames_per_sample);
727
#endif
728
            get_buffer(pb, codec_name, 32); /* codec name, pascal string (FIXME: true for mp4?) */
729
            if (codec_name[0] <= 31) {
730
                memcpy(st->codec->codec_name, &codec_name[1],codec_name[0]);
731
                st->codec->codec_name[codec_name[0]] = 0;
732
            }
733

    
734
            st->codec->bits_per_sample = get_be16(pb); /* depth */
735
            st->codec->color_table_id = get_be16(pb); /* colortable id */
736

    
737
            /* figure out the palette situation */
738
            color_depth = st->codec->bits_per_sample & 0x1F;
739
            color_greyscale = st->codec->bits_per_sample & 0x20;
740

    
741
            /* if the depth is 2, 4, or 8 bpp, file is palettized */
742
            if ((color_depth == 2) || (color_depth == 4) ||
743
                (color_depth == 8)) {
744

    
745
                if (color_greyscale) {
746

    
747
                    /* compute the greyscale palette */
748
                    color_count = 1 << color_depth;
749
                    color_index = 255;
750
                    color_dec = 256 / (color_count - 1);
751
                    for (j = 0; j < color_count; j++) {
752
                        r = g = b = color_index;
753
                        c->palette_control.palette[j] =
754
                            (r << 16) | (g << 8) | (b);
755
                        color_index -= color_dec;
756
                        if (color_index < 0)
757
                            color_index = 0;
758
                    }
759

    
760
                } else if (st->codec->color_table_id & 0x08) {
761

    
762
                    /* if flag bit 3 is set, use the default palette */
763
                    color_count = 1 << color_depth;
764
                    if (color_depth == 2)
765
                        color_table = ff_qt_default_palette_4;
766
                    else if (color_depth == 4)
767
                        color_table = ff_qt_default_palette_16;
768
                    else
769
                        color_table = ff_qt_default_palette_256;
770

    
771
                    for (j = 0; j < color_count; j++) {
772
                        r = color_table[j * 4 + 0];
773
                        g = color_table[j * 4 + 1];
774
                        b = color_table[j * 4 + 2];
775
                        c->palette_control.palette[j] =
776
                            (r << 16) | (g << 8) | (b);
777
                    }
778

    
779
                } else {
780

    
781
                    /* load the palette from the file */
782
                    color_start = get_be32(pb);
783
                    color_count = get_be16(pb);
784
                    color_end = get_be16(pb);
785
                    for (j = color_start; j <= color_end; j++) {
786
                        /* each R, G, or B component is 16 bits;
787
                         * only use the top 8 bits; skip alpha bytes
788
                         * up front */
789
                        get_byte(pb);
790
                        get_byte(pb);
791
                        r = get_byte(pb);
792
                        get_byte(pb);
793
                        g = get_byte(pb);
794
                        get_byte(pb);
795
                        b = get_byte(pb);
796
                        get_byte(pb);
797
                        c->palette_control.palette[j] =
798
                            (r << 16) | (g << 8) | (b);
799
                    }
800
                }
801

    
802
                st->codec->palctrl = &c->palette_control;
803
                st->codec->palctrl->palette_changed = 1;
804
            } else
805
                st->codec->palctrl = NULL;
806
        } else if(st->codec->codec_type==CODEC_TYPE_AUDIO) {
807
            int bits_per_sample;
808
            uint16_t version = get_be16(pb);
809

    
810
            st->codec->codec_id = id;
811
            get_be16(pb); /* revision level */
812
            get_be32(pb); /* vendor */
813

    
814
            st->codec->channels = get_be16(pb);             /* channel count */
815
            dprintf(c->fc, "audio channels %d\n", st->codec->channels);
816
            st->codec->bits_per_sample = get_be16(pb);      /* sample size */
817
            /* do we need to force to 16 for AMR ? */
818

    
819
            /* handle specific s8 codec */
820
            get_be16(pb); /* compression id = 0*/
821
            get_be16(pb); /* packet size = 0 */
822

    
823
            st->codec->sample_rate = ((get_be32(pb) >> 16));
824

    
825
            switch (st->codec->codec_id) {
826
            case CODEC_ID_PCM_S8:
827
            case CODEC_ID_PCM_U8:
828
                if (st->codec->bits_per_sample == 16)
829
                    st->codec->codec_id = CODEC_ID_PCM_S16BE;
830
                break;
831
            case CODEC_ID_PCM_S16LE:
832
            case CODEC_ID_PCM_S16BE:
833
                if (st->codec->bits_per_sample == 8)
834
                    st->codec->codec_id = CODEC_ID_PCM_S8;
835
                else if (st->codec->bits_per_sample == 24)
836
                    st->codec->codec_id = CODEC_ID_PCM_S24BE;
837
                break;
838
            default:
839
                break;
840
            }
841

    
842
            //Read QT version 1 fields. In version 0 theese dont exist
843
            dprintf(c->fc, "version =%d, isom =%d\n",version,c->isom);
844
            if(!c->isom) {
845
                if(version==1) {
846
                    sc->sample_size_v1.den = get_be32(pb); /* samples per packet */
847
                    get_be32(pb); /* bytes per packet */
848
                    sc->sample_size_v1.num = get_be32(pb); /* bytes per frame */
849
                    get_be32(pb); /* bytes per sample */
850
                } else if(version==2) {
851
                    get_be32(pb); /* sizeof struct only */
852
                    st->codec->sample_rate = av_int2dbl(get_be64(pb)); /* float 64 */
853
                    st->codec->channels = get_be32(pb);
854
                    get_be32(pb); /* always 0x7F000000 */
855
                    get_be32(pb); /* bits per channel if sound is uncompressed */
856
                    get_be32(pb); /* lcpm format specific flag */
857
                    get_be32(pb); /* bytes per audio packet if constant */
858
                    get_be32(pb); /* lpcm frames per audio packet if constant */
859
                }
860
            }
861

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

    
879
    if(st->codec->codec_type==CODEC_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1) {
880
        st->codec->sample_rate= sc->time_scale;
881
    }
882

    
883
    /* special codec parameters handling */
884
    switch (st->codec->codec_id) {
885
#ifdef CONFIG_H261_DECODER
886
    case CODEC_ID_H261:
887
#endif
888
#ifdef CONFIG_H263_DECODER
889
    case CODEC_ID_H263:
890
#endif
891
#ifdef CONFIG_MPEG4_DECODER
892
    case CODEC_ID_MPEG4:
893
#endif
894
        st->codec->width= 0; /* let decoder init width/height */
895
        st->codec->height= 0;
896
        break;
897
#ifdef CONFIG_LIBFAAD
898
    case CODEC_ID_AAC:
899
#endif
900
#ifdef CONFIG_VORBIS_DECODER
901
    case CODEC_ID_VORBIS:
902
#endif
903
    case CODEC_ID_MP3ON4:
904
        st->codec->sample_rate= 0; /* let decoder init parameters properly */
905
        break;
906
#ifdef CONFIG_DV_DEMUXER
907
    case CODEC_ID_DVAUDIO:
908
        c->dv_fctx = av_alloc_format_context();
909
        c->dv_demux = dv_init_demux(c->dv_fctx);
910
        if (!c->dv_demux) {
911
            av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
912
            return -1;
913
        }
914
        sc->dv_audio_container = 1;
915
        st->codec->codec_id = CODEC_ID_PCM_S16LE;
916
        break;
917
#endif
918
    /* no ifdef since parameters are always those */
919
    case CODEC_ID_AMR_WB:
920
        st->codec->sample_rate= 16000;
921
        st->codec->channels= 1; /* really needed */
922
        break;
923
    case CODEC_ID_AMR_NB:
924
        st->codec->sample_rate= 8000;
925
        st->codec->channels= 1; /* really needed */
926
        break;
927
    case CODEC_ID_MP2:
928
        st->codec->codec_type = CODEC_TYPE_AUDIO; /* force type after stsd for m1a hdlr */
929
        st->need_parsing = 1;
930
        break;
931
    default:
932
        break;
933
    }
934

    
935
    return 0;
936
}
937

    
938
static int mov_read_stsc(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
939
{
940
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
941
    MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
942
    unsigned int i, entries;
943

    
944
    get_byte(pb); /* version */
945
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
946

    
947
    entries = get_be32(pb);
948

    
949
    if(entries >= UINT_MAX / sizeof(MOV_sample_to_chunk_tbl))
950
        return -1;
951

    
952
#ifdef DEBUG
953
av_log(NULL, AV_LOG_DEBUG, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
954
#endif
955
    sc->sample_to_chunk_sz = entries;
956
    sc->sample_to_chunk = av_malloc(entries * sizeof(MOV_sample_to_chunk_tbl));
957
    if (!sc->sample_to_chunk)
958
        return -1;
959
    for(i=0; i<entries; i++) {
960
        sc->sample_to_chunk[i].first = get_be32(pb);
961
        sc->sample_to_chunk[i].count = get_be32(pb);
962
        sc->sample_to_chunk[i].id = get_be32(pb);
963
    }
964
    return 0;
965
}
966

    
967
static int mov_read_stss(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
968
{
969
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
970
    MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
971
    unsigned int i, entries;
972

    
973
    get_byte(pb); /* version */
974
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
975

    
976
    entries = get_be32(pb);
977

    
978
    if(entries >= UINT_MAX / sizeof(long))
979
        return -1;
980

    
981
    sc->keyframe_count = entries;
982
#ifdef DEBUG
983
    av_log(NULL, AV_LOG_DEBUG, "keyframe_count = %d\n", sc->keyframe_count);
984
#endif
985
    sc->keyframes = av_malloc(entries * sizeof(long));
986
    if (!sc->keyframes)
987
        return -1;
988
    for(i=0; i<entries; i++) {
989
        sc->keyframes[i] = get_be32(pb);
990
#ifdef DEBUG
991
/*        av_log(NULL, AV_LOG_DEBUG, "keyframes[]=%ld\n", sc->keyframes[i]); */
992
#endif
993
    }
994
    return 0;
995
}
996

    
997
static int mov_read_stsz(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
998
{
999
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1000
    MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1001
    unsigned int i, entries, sample_size;
1002

    
1003
    get_byte(pb); /* version */
1004
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1005

    
1006
    sample_size = get_be32(pb);
1007
    if (!sc->sample_size) /* do not overwrite value computed in stsd */
1008
        sc->sample_size = sample_size;
1009
    entries = get_be32(pb);
1010
    if(entries >= UINT_MAX / sizeof(long))
1011
        return -1;
1012

    
1013
    sc->sample_count = entries;
1014
    if (sample_size)
1015
        return 0;
1016

    
1017
#ifdef DEBUG
1018
    av_log(NULL, AV_LOG_DEBUG, "sample_size = %d sample_count = %d\n", sc->sample_size, sc->sample_count);
1019
#endif
1020
    sc->sample_sizes = av_malloc(entries * sizeof(long));
1021
    if (!sc->sample_sizes)
1022
        return -1;
1023
    for(i=0; i<entries; i++) {
1024
        sc->sample_sizes[i] = get_be32(pb);
1025
#ifdef DEBUG
1026
        av_log(NULL, AV_LOG_DEBUG, "sample_sizes[]=%ld\n", sc->sample_sizes[i]);
1027
#endif
1028
    }
1029
    return 0;
1030
}
1031

    
1032
static int mov_read_stts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1033
{
1034
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1035
    MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1036
    unsigned int i, entries;
1037
    int64_t duration=0;
1038
    int64_t total_sample_count=0;
1039

    
1040
    get_byte(pb); /* version */
1041
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1042
    entries = get_be32(pb);
1043
    if(entries >= UINT_MAX / sizeof(Time2Sample))
1044
        return -1;
1045

    
1046
    sc->stts_count = entries;
1047
    sc->stts_data = av_malloc(entries * sizeof(Time2Sample));
1048

    
1049
#ifdef DEBUG
1050
av_log(NULL, AV_LOG_DEBUG, "track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries);
1051
#endif
1052

    
1053
    sc->time_rate=0;
1054

    
1055
    for(i=0; i<entries; i++) {
1056
        int sample_duration;
1057
        int sample_count;
1058

    
1059
        sample_count=get_be32(pb);
1060
        sample_duration = get_be32(pb);
1061
        sc->stts_data[i].count= sample_count;
1062
        sc->stts_data[i].duration= sample_duration;
1063

    
1064
        sc->time_rate= ff_gcd(sc->time_rate, sample_duration);
1065

    
1066
        dprintf(c->fc, "sample_count=%d, sample_duration=%d\n",sample_count,sample_duration);
1067

    
1068
        duration+=(int64_t)sample_duration*sample_count;
1069
        total_sample_count+=sample_count;
1070
    }
1071

    
1072
    st->nb_frames= total_sample_count;
1073
    if(duration)
1074
        st->duration= duration;
1075
    return 0;
1076
}
1077

    
1078
static int mov_read_ctts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1079
{
1080
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1081
    MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1082
    unsigned int i, entries;
1083

    
1084
    get_byte(pb); /* version */
1085
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1086
    entries = get_be32(pb);
1087
    if(entries >= UINT_MAX / sizeof(Time2Sample))
1088
        return -1;
1089

    
1090
    sc->ctts_count = entries;
1091
    sc->ctts_data = av_malloc(entries * sizeof(Time2Sample));
1092

    
1093
    dprintf(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
1094

    
1095
    for(i=0; i<entries; i++) {
1096
        int count    =get_be32(pb);
1097
        int duration =get_be32(pb);
1098

    
1099
        if (duration < 0) {
1100
            av_log(c->fc, AV_LOG_ERROR, "negative ctts, ignoring\n");
1101
            sc->ctts_count = 0;
1102
            url_fskip(pb, 8 * (entries - i - 1));
1103
            break;
1104
        }
1105
        sc->ctts_data[i].count   = count;
1106
        sc->ctts_data[i].duration= duration;
1107

    
1108
        sc->time_rate= ff_gcd(sc->time_rate, duration);
1109
    }
1110
    return 0;
1111
}
1112

    
1113
static int mov_read_trak(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1114
{
1115
    AVStream *st;
1116
    MOVStreamContext *sc;
1117

    
1118
    st = av_new_stream(c->fc, c->fc->nb_streams);
1119
    if (!st) return -2;
1120
    sc = av_mallocz(sizeof(MOVStreamContext));
1121
    if (!sc) {
1122
        av_free(st);
1123
        return -1;
1124
    }
1125

    
1126
    st->priv_data = sc;
1127
    st->codec->codec_type = CODEC_TYPE_DATA;
1128
    st->start_time = 0; /* XXX: check */
1129
    c->streams[c->fc->nb_streams-1] = sc;
1130

    
1131
    return mov_read_default(c, pb, atom);
1132
}
1133

    
1134
static int mov_read_tkhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1135
{
1136
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1137
    int version = get_byte(pb);
1138

    
1139
    get_byte(pb); get_byte(pb);
1140
    get_byte(pb); /* flags */
1141
    /*
1142
    MOV_TRACK_ENABLED 0x0001
1143
    MOV_TRACK_IN_MOVIE 0x0002
1144
    MOV_TRACK_IN_PREVIEW 0x0004
1145
    MOV_TRACK_IN_POSTER 0x0008
1146
    */
1147

    
1148
    if (version == 1) {
1149
        get_be64(pb);
1150
        get_be64(pb);
1151
    } else {
1152
        get_be32(pb); /* creation time */
1153
        get_be32(pb); /* modification time */
1154
    }
1155
    st->id = (int)get_be32(pb); /* track id (NOT 0 !)*/
1156
    get_be32(pb); /* reserved */
1157
    st->start_time = 0; /* check */
1158
    (version == 1) ? get_be64(pb) : get_be32(pb); /* highlevel (considering edits) duration in movie timebase */
1159
    get_be32(pb); /* reserved */
1160
    get_be32(pb); /* reserved */
1161

    
1162
    get_be16(pb); /* layer */
1163
    get_be16(pb); /* alternate group */
1164
    get_be16(pb); /* volume */
1165
    get_be16(pb); /* reserved */
1166

    
1167
    url_fskip(pb, 36); /* display matrix */
1168

    
1169
    /* those are fixed-point */
1170
    get_be32(pb); /* track width */
1171
    get_be32(pb); /* track height */
1172

    
1173
    return 0;
1174
}
1175

    
1176
/* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
1177
/* like the files created with Adobe Premiere 5.0, for samples see */
1178
/* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
1179
static int mov_read_wide(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1180
{
1181
    int err;
1182

    
1183
    if (atom.size < 8)
1184
        return 0; /* continue */
1185
    if (get_be32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
1186
        url_fskip(pb, atom.size - 4);
1187
        return 0;
1188
    }
1189
    atom.type = get_le32(pb);
1190
    atom.offset += 8;
1191
    atom.size -= 8;
1192
    if (atom.type != MKTAG('m', 'd', 'a', 't')) {
1193
        url_fskip(pb, atom.size);
1194
        return 0;
1195
    }
1196
    err = mov_read_mdat(c, pb, atom);
1197
    return err;
1198
}
1199

    
1200
static int mov_read_cmov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1201
{
1202
#ifdef CONFIG_ZLIB
1203
    ByteIOContext ctx;
1204
    uint8_t *cmov_data;
1205
    uint8_t *moov_data; /* uncompressed data */
1206
    long cmov_len, moov_len;
1207
    int ret;
1208

    
1209
    get_be32(pb); /* dcom atom */
1210
    if (get_le32(pb) != MKTAG( 'd', 'c', 'o', 'm' ))
1211
        return -1;
1212
    if (get_le32(pb) != MKTAG( 'z', 'l', 'i', 'b' )) {
1213
        av_log(NULL, AV_LOG_ERROR, "unknown compression for cmov atom !");
1214
        return -1;
1215
    }
1216
    get_be32(pb); /* cmvd atom */
1217
    if (get_le32(pb) != MKTAG( 'c', 'm', 'v', 'd' ))
1218
        return -1;
1219
    moov_len = get_be32(pb); /* uncompressed size */
1220
    cmov_len = atom.size - 6 * 4;
1221

    
1222
    cmov_data = av_malloc(cmov_len);
1223
    if (!cmov_data)
1224
        return -1;
1225
    moov_data = av_malloc(moov_len);
1226
    if (!moov_data) {
1227
        av_free(cmov_data);
1228
        return -1;
1229
    }
1230
    get_buffer(pb, cmov_data, cmov_len);
1231
    if(uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
1232
        return -1;
1233
    if(init_put_byte(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
1234
        return -1;
1235
    atom.type = MKTAG( 'm', 'o', 'o', 'v' );
1236
    atom.offset = 0;
1237
    atom.size = moov_len;
1238
#ifdef DEBUG
1239
//    { int fd = open("/tmp/uncompheader.mov", O_WRONLY | O_CREAT); write(fd, moov_data, moov_len); close(fd); }
1240
#endif
1241
    ret = mov_read_default(c, &ctx, atom);
1242
    av_free(moov_data);
1243
    av_free(cmov_data);
1244
    return ret;
1245
#else
1246
    av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
1247
    return -1;
1248
#endif
1249
}
1250

    
1251
/* edit list atom */
1252
static int mov_read_elst(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1253
{
1254
    int i, edit_count;
1255

    
1256
    get_byte(pb); /* version */
1257
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1258
    edit_count= c->streams[c->fc->nb_streams-1]->edit_count = get_be32(pb);     /* entries */
1259

    
1260
    for(i=0; i<edit_count; i++){
1261
        get_be32(pb); /* Track duration */
1262
        get_be32(pb); /* Media time */
1263
        get_be32(pb); /* Media rate */
1264
    }
1265
    dprintf(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, c->streams[c->fc->nb_streams-1]->edit_count);
1266
    return 0;
1267
}
1268

    
1269
static const MOVParseTableEntry mov_default_parse_table[] = {
1270
/* mp4 atoms */
1271
{ MKTAG( 'c', 'o', '6', '4' ), mov_read_stco },
1272
{ MKTAG( 'c', 't', 't', 's' ), mov_read_ctts }, /* composition time to sample */
1273
{ MKTAG( 'e', 'd', 't', 's' ), mov_read_default },
1274
{ MKTAG( 'e', 'l', 's', 't' ), mov_read_elst },
1275
{ MKTAG( 'e', 'n', 'd', 'a' ), mov_read_enda },
1276
{ MKTAG( 'f', 'i', 'e', 'l' ), mov_read_extradata },
1277
{ MKTAG( 'f', 't', 'y', 'p' ), mov_read_ftyp },
1278
{ MKTAG( 'h', 'd', 'l', 'r' ), mov_read_hdlr },
1279
{ MKTAG( 'j', 'p', '2', 'h' ), mov_read_extradata },
1280
{ MKTAG( 'm', 'd', 'a', 't' ), mov_read_mdat },
1281
{ MKTAG( 'm', 'd', 'h', 'd' ), mov_read_mdhd },
1282
{ MKTAG( 'm', 'd', 'i', 'a' ), mov_read_default },
1283
{ MKTAG( 'm', 'i', 'n', 'f' ), mov_read_default },
1284
{ MKTAG( 'm', 'o', 'o', 'v' ), mov_read_moov },
1285
{ MKTAG( 'm', 'v', 'h', 'd' ), mov_read_mvhd },
1286
{ MKTAG( 'S', 'M', 'I', ' ' ), mov_read_smi }, /* Sorenson extension ??? */
1287
{ MKTAG( 'a', 'l', 'a', 'c' ), mov_read_extradata }, /* alac specific atom */
1288
{ MKTAG( 'a', 'v', 'c', 'C' ), mov_read_avcC },
1289
{ MKTAG( 's', 't', 'b', 'l' ), mov_read_default },
1290
{ MKTAG( 's', 't', 'c', 'o' ), mov_read_stco },
1291
{ MKTAG( 's', 't', 's', 'c' ), mov_read_stsc },
1292
{ MKTAG( 's', 't', 's', 'd' ), mov_read_stsd }, /* sample description */
1293
{ MKTAG( 's', 't', 's', 's' ), mov_read_stss }, /* sync sample */
1294
{ MKTAG( 's', 't', 's', 'z' ), mov_read_stsz }, /* sample size */
1295
{ MKTAG( 's', 't', 't', 's' ), mov_read_stts },
1296
{ MKTAG( 't', 'k', 'h', 'd' ), mov_read_tkhd }, /* track header */
1297
{ MKTAG( 't', 'r', 'a', 'k' ), mov_read_trak },
1298
{ MKTAG( 'w', 'a', 'v', 'e' ), mov_read_wave },
1299
{ MKTAG( 'c', 't', 'a', 'b' ), mov_read_ctab },
1300
{ MKTAG( 'e', 's', 'd', 's' ), mov_read_esds },
1301
{ MKTAG( 'w', 'i', 'd', 'e' ), mov_read_wide }, /* place holder */
1302
{ MKTAG( 'c', 'm', 'o', 'v' ), mov_read_cmov },
1303
{ 0L, NULL }
1304
};
1305

    
1306
static void mov_free_stream_context(MOVStreamContext *sc)
1307
{
1308
    if(sc) {
1309
        av_freep(&sc->ctts_data);
1310
        av_freep(&sc);
1311
    }
1312
}
1313

    
1314
/* XXX: is it sufficient ? */
1315
static int mov_probe(AVProbeData *p)
1316
{
1317
    unsigned int offset;
1318
    uint32_t tag;
1319
    int score = 0;
1320

    
1321
    /* check file header */
1322
    if (p->buf_size <= 12)
1323
        return 0;
1324
    offset = 0;
1325
    for(;;) {
1326
        /* ignore invalid offset */
1327
        if ((offset + 8) > (unsigned int)p->buf_size)
1328
            return score;
1329
        tag = AV_RL32(p->buf + offset + 4);
1330
        switch(tag) {
1331
        /* check for obvious tags */
1332
        case MKTAG( 'j', 'P', ' ', ' ' ): /* jpeg 2000 signature */
1333
        case MKTAG( 'm', 'o', 'o', 'v' ):
1334
        case MKTAG( 'm', 'd', 'a', 't' ):
1335
        case MKTAG( 'p', 'n', 'o', 't' ): /* detect movs with preview pics like ew.mov and april.mov */
1336
        case MKTAG( 'u', 'd', 't', 'a' ): /* Packet Video PVAuthor adds this and a lot of more junk */
1337
            return AVPROBE_SCORE_MAX;
1338
        /* those are more common words, so rate then a bit less */
1339
        case MKTAG( 'w', 'i', 'd', 'e' ):
1340
        case MKTAG( 'f', 'r', 'e', 'e' ):
1341
        case MKTAG( 'j', 'u', 'n', 'k' ):
1342
        case MKTAG( 'p', 'i', 'c', 't' ):
1343
            return AVPROBE_SCORE_MAX - 5;
1344
        case MKTAG( 'f', 't', 'y', 'p' ):
1345
        case MKTAG( 's', 'k', 'i', 'p' ):
1346
        case MKTAG( 'u', 'u', 'i', 'd' ):
1347
            offset = AV_RB32(p->buf+offset) + offset;
1348
            /* if we only find those cause probedata is too small at least rate them */
1349
            score = AVPROBE_SCORE_MAX - 50;
1350
            break;
1351
        default:
1352
            /* unrecognized tag */
1353
            return score;
1354
        }
1355
    }
1356
    return score;
1357
}
1358

    
1359
static void mov_build_index(MOVContext *mov, AVStream *st)
1360
{
1361
    MOVStreamContext *sc = st->priv_data;
1362
    offset_t current_offset;
1363
    int64_t current_dts = 0;
1364
    unsigned int stts_index = 0;
1365
    unsigned int stsc_index = 0;
1366
    unsigned int stss_index = 0;
1367
    unsigned int i, j, k;
1368

    
1369
    if (sc->sample_sizes || st->codec->codec_type == CODEC_TYPE_VIDEO || sc->dv_audio_container) {
1370
        unsigned int current_sample = 0;
1371
        unsigned int stts_sample = 0;
1372
        unsigned int keyframe, sample_size;
1373
        unsigned int distance = 0;
1374

    
1375
        st->nb_frames = sc->sample_count;
1376
        for (i = 0; i < sc->chunk_count; i++) {
1377
            current_offset = sc->chunk_offsets[i];
1378
            if (stsc_index + 1 < sc->sample_to_chunk_sz && i + 1 == sc->sample_to_chunk[stsc_index + 1].first)
1379
                stsc_index++;
1380
            for (j = 0; j < sc->sample_to_chunk[stsc_index].count; j++) {
1381
                if (current_sample >= sc->sample_count) {
1382
                    av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
1383
                    goto out;
1384
                }
1385
                keyframe = !sc->keyframe_count || current_sample + 1 == sc->keyframes[stss_index];
1386
                if (keyframe) {
1387
                    distance = 0;
1388
                    if (stss_index + 1 < sc->keyframe_count)
1389
                        stss_index++;
1390
                }
1391
                sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
1392
                dprintf(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", size %d, distance %d, keyframe %d\n",
1393
                        st->index, current_sample, current_offset, current_dts, sample_size, distance, keyframe);
1394
                av_add_index_entry(st, current_offset, current_dts, sample_size, distance, keyframe ? AVINDEX_KEYFRAME : 0);
1395
                current_offset += sample_size;
1396
                assert(sc->stts_data[stts_index].duration % sc->time_rate == 0);
1397
                current_dts += sc->stts_data[stts_index].duration / sc->time_rate;
1398
                distance++;
1399
                stts_sample++;
1400
                current_sample++;
1401
                if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
1402
                    stts_sample = 0;
1403
                    stts_index++;
1404
                }
1405
            }
1406
        }
1407
    } else { /* read whole chunk */
1408
        unsigned int chunk_samples, chunk_size, chunk_duration;
1409

    
1410
        for (i = 0; i < sc->chunk_count; i++) {
1411
            current_offset = sc->chunk_offsets[i];
1412
            if (stsc_index + 1 < sc->sample_to_chunk_sz && i + 1 == sc->sample_to_chunk[stsc_index + 1].first)
1413
                stsc_index++;
1414
            chunk_samples = sc->sample_to_chunk[stsc_index].count;
1415
            /* get chunk size */
1416
            if (sc->sample_size > 1 || st->codec->codec_id == CODEC_ID_PCM_U8 || st->codec->codec_id == CODEC_ID_PCM_S8)
1417
                chunk_size = chunk_samples * sc->sample_size;
1418
            else if (sc->sample_size_v1.den > 0 && (chunk_samples * sc->sample_size_v1.num % sc->sample_size_v1.den == 0))
1419
                chunk_size = chunk_samples * sc->sample_size_v1.num / sc->sample_size_v1.den;
1420
            else { /* workaround to find nearest next chunk offset */
1421
                chunk_size = INT_MAX;
1422
                for (j = 0; j < mov->total_streams; j++) {
1423
                    MOVStreamContext *msc = mov->streams[j];
1424

    
1425
                    for (k = msc->next_chunk; k < msc->chunk_count; k++) {
1426
                        if (msc->chunk_offsets[k] > current_offset && msc->chunk_offsets[k] - current_offset < chunk_size) {
1427
                            chunk_size = msc->chunk_offsets[k] - current_offset;
1428
                            msc->next_chunk = k;
1429
                            break;
1430
                        }
1431
                    }
1432
                }
1433
                /* check for last chunk */
1434
                if (chunk_size == INT_MAX)
1435
                    for (j = 0; j < mov->mdat_count; j++) {
1436
                        dprintf(mov->fc, "mdat %d, offset %"PRIx64", size %"PRId64", current offset %"PRIx64"\n",
1437
                                j, mov->mdat_list[j].offset, mov->mdat_list[j].size, current_offset);
1438
                        if (mov->mdat_list[j].offset <= current_offset && mov->mdat_list[j].offset + mov->mdat_list[j].size > current_offset)
1439
                            chunk_size = mov->mdat_list[j].offset + mov->mdat_list[j].size - current_offset;
1440
                    }
1441
                assert(chunk_size != INT_MAX);
1442
                for (j = 0; j < mov->total_streams; j++) {
1443
                    mov->streams[j]->next_chunk = 0;
1444
                }
1445
            }
1446
            av_add_index_entry(st, current_offset, current_dts, chunk_size, 0, AVINDEX_KEYFRAME);
1447
            /* get chunk duration */
1448
            chunk_duration = 0;
1449
            while (chunk_samples > 0) {
1450
                if (chunk_samples < sc->stts_data[stts_index].count) {
1451
                    chunk_duration += sc->stts_data[stts_index].duration * chunk_samples;
1452
                    sc->stts_data[stts_index].count -= chunk_samples;
1453
                    break;
1454
                } else {
1455
                    chunk_duration += sc->stts_data[stts_index].duration * chunk_samples;
1456
                    chunk_samples -= sc->stts_data[stts_index].count;
1457
                    if (stts_index + 1 < sc->stts_count) {
1458
                        stts_index++;
1459
                    }
1460
                }
1461
            }
1462
            dprintf(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", size %d, duration %d\n",
1463
                    st->index, i, current_offset, current_dts, chunk_size, chunk_duration);
1464
            assert(chunk_duration % sc->time_rate == 0);
1465
            current_dts += chunk_duration / sc->time_rate;
1466
        }
1467
    }
1468
 out:
1469
    /* adjust sample count to avindex entries */
1470
    sc->sample_count = st->nb_index_entries;
1471
}
1472

    
1473
static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
1474
{
1475
    MOVContext *mov = (MOVContext *) s->priv_data;
1476
    ByteIOContext *pb = &s->pb;
1477
    int i, err;
1478
    MOV_atom_t atom = { 0, 0, 0 };
1479

    
1480
    mov->fc = s;
1481
    mov->parse_table = mov_default_parse_table;
1482

    
1483
    if(!url_is_streamed(pb)) /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
1484
        atom.size = url_fsize(pb);
1485
    else
1486
        atom.size = 0x7FFFFFFFFFFFFFFFLL;
1487

    
1488
    /* check MOV header */
1489
    err = mov_read_default(mov, pb, atom);
1490
    if (err<0 || (!mov->found_moov && !mov->found_mdat)) {
1491
        av_log(s, AV_LOG_ERROR, "mov: header not found !!! (err:%d, moov:%d, mdat:%d) pos:%"PRId64"\n",
1492
                err, mov->found_moov, mov->found_mdat, url_ftell(pb));
1493
        return -1;
1494
    }
1495
    dprintf(mov->fc, "on_parse_exit_offset=%d\n", (int) url_ftell(pb));
1496

    
1497
    /* some cleanup : make sure we are on the mdat atom */
1498
    if(!url_is_streamed(pb) && (url_ftell(pb) != mov->mdat_offset))
1499
        url_fseek(pb, mov->mdat_offset, SEEK_SET);
1500

    
1501
    mov->total_streams = s->nb_streams;
1502

    
1503
    for(i=0; i<mov->total_streams; i++) {
1504
        MOVStreamContext *sc = mov->streams[i];
1505
        /* sanity checks */
1506
        if(!sc->stts_count || !sc->chunk_count || !sc->sample_to_chunk_sz ||
1507
           (!sc->sample_size && !sc->sample_count)){
1508
            av_log(s, AV_LOG_ERROR, "missing mandatory atoms, broken header\n");
1509
            return -1;
1510
        }
1511
        if(!sc->time_rate)
1512
            sc->time_rate=1;
1513
        if(!sc->time_scale)
1514
            sc->time_scale= mov->time_scale;
1515
        av_set_pts_info(s->streams[i], 64, sc->time_rate, sc->time_scale);
1516

    
1517
        if(s->streams[i]->duration != AV_NOPTS_VALUE){
1518
            assert(s->streams[i]->duration % sc->time_rate == 0);
1519
            s->streams[i]->duration /= sc->time_rate;
1520
        }
1521
        sc->ffindex = i;
1522
        mov_build_index(mov, s->streams[i]);
1523
    }
1524

    
1525
    for(i=0; i<mov->total_streams; i++) {
1526
        /* dont need those anymore */
1527
        av_freep(&mov->streams[i]->chunk_offsets);
1528
        av_freep(&mov->streams[i]->sample_to_chunk);
1529
        av_freep(&mov->streams[i]->sample_sizes);
1530
        av_freep(&mov->streams[i]->keyframes);
1531
        av_freep(&mov->streams[i]->stts_data);
1532
    }
1533
    av_freep(&mov->mdat_list);
1534
    return 0;
1535
}
1536

    
1537
static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
1538
{
1539
    MOVContext *mov = s->priv_data;
1540
    MOVStreamContext *sc = 0;
1541
    AVIndexEntry *sample = 0;
1542
    int64_t best_dts = INT64_MAX;
1543
    int i;
1544

    
1545
    for (i = 0; i < mov->total_streams; i++) {
1546
        MOVStreamContext *msc = mov->streams[i];
1547

    
1548
        if (s->streams[i]->discard != AVDISCARD_ALL && msc->current_sample < msc->sample_count) {
1549
            AVIndexEntry *current_sample = &s->streams[i]->index_entries[msc->current_sample];
1550
            int64_t dts = av_rescale(current_sample->timestamp * (int64_t)msc->time_rate, AV_TIME_BASE, msc->time_scale);
1551

    
1552
            dprintf(s, "stream %d, sample %ld, dts %"PRId64"\n", i, msc->current_sample, dts);
1553
            if (dts < best_dts) {
1554
                sample = current_sample;
1555
                best_dts = dts;
1556
                sc = msc;
1557
            }
1558
        }
1559
    }
1560
    if (!sample)
1561
        return -1;
1562
    /* must be done just before reading, to avoid infinite loop on sample */
1563
    sc->current_sample++;
1564
    if (sample->pos >= url_fsize(&s->pb)) {
1565
        av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n", sc->ffindex, sample->pos);
1566
        return -1;
1567
    }
1568
#ifdef CONFIG_DV_DEMUXER
1569
    if (sc->dv_audio_container) {
1570
        dv_get_packet(mov->dv_demux, pkt);
1571
        dprintf(s, "dv audio pkt size %d\n", pkt->size);
1572
    } else {
1573
#endif
1574
        url_fseek(&s->pb, sample->pos, SEEK_SET);
1575
        av_get_packet(&s->pb, pkt, sample->size);
1576
#ifdef CONFIG_DV_DEMUXER
1577
        if (mov->dv_demux) {
1578
            void *pkt_destruct_func = pkt->destruct;
1579
            dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size);
1580
            pkt->destruct = pkt_destruct_func;
1581
        }
1582
    }
1583
#endif
1584
    pkt->stream_index = sc->ffindex;
1585
    pkt->dts = sample->timestamp;
1586
    if (sc->ctts_data) {
1587
        assert(sc->ctts_data[sc->sample_to_ctime_index].duration % sc->time_rate == 0);
1588
        pkt->pts = pkt->dts + sc->ctts_data[sc->sample_to_ctime_index].duration / sc->time_rate;
1589
        /* update ctts context */
1590
        sc->sample_to_ctime_sample++;
1591
        if (sc->sample_to_ctime_index < sc->ctts_count && sc->ctts_data[sc->sample_to_ctime_index].count == sc->sample_to_ctime_sample) {
1592
            sc->sample_to_ctime_index++;
1593
            sc->sample_to_ctime_sample = 0;
1594
        }
1595
    } else {
1596
        pkt->pts = pkt->dts;
1597
    }
1598
    pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? PKT_FLAG_KEY : 0;
1599
    pkt->pos = sample->pos;
1600
    dprintf(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n", pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
1601
    return 0;
1602
}
1603

    
1604
static int mov_seek_stream(AVStream *st, int64_t timestamp, int flags)
1605
{
1606
    MOVStreamContext *sc = st->priv_data;
1607
    int sample, time_sample;
1608
    int i;
1609

    
1610
    sample = av_index_search_timestamp(st, timestamp, flags);
1611
    dprintf(st->codec, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
1612
    if (sample < 0) /* not sure what to do */
1613
        return -1;
1614
    sc->current_sample = sample;
1615
    dprintf(st->codec, "stream %d, found sample %ld\n", st->index, sc->current_sample);
1616
    /* adjust ctts index */
1617
    if (sc->ctts_data) {
1618
        time_sample = 0;
1619
        for (i = 0; i < sc->ctts_count; i++) {
1620
            time_sample += sc->ctts_data[i].count;
1621
            if (time_sample >= sc->current_sample) {
1622
                sc->sample_to_ctime_index = i;
1623
                sc->sample_to_ctime_sample = time_sample - sc->current_sample;
1624
                break;
1625
            }
1626
        }
1627
    }
1628
    return sample;
1629
}
1630

    
1631
static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
1632
{
1633
    AVStream *st;
1634
    int64_t seek_timestamp, timestamp;
1635
    int sample;
1636
    int i;
1637

    
1638
    if (stream_index >= s->nb_streams)
1639
        return -1;
1640

    
1641
    st = s->streams[stream_index];
1642
    sample = mov_seek_stream(st, sample_time, flags);
1643
    if (sample < 0)
1644
        return -1;
1645

    
1646
    /* adjust seek timestamp to found sample timestamp */
1647
    seek_timestamp = st->index_entries[sample].timestamp;
1648

    
1649
    for (i = 0; i < s->nb_streams; i++) {
1650
        st = s->streams[i];
1651
        if (stream_index == i || st->discard == AVDISCARD_ALL)
1652
            continue;
1653

    
1654
        timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
1655
        mov_seek_stream(st, timestamp, flags);
1656
    }
1657
    return 0;
1658
}
1659

    
1660
static int mov_read_close(AVFormatContext *s)
1661
{
1662
    int i;
1663
    MOVContext *mov = (MOVContext *) s->priv_data;
1664
    for(i=0; i<mov->total_streams; i++)
1665
        mov_free_stream_context(mov->streams[i]);
1666
    /* free color tabs */
1667
    for(i=0; i<mov->ctab_size; i++)
1668
        av_freep(&mov->ctab[i]);
1669
    if(mov->dv_demux){
1670
        for(i=0; i<mov->dv_fctx->nb_streams; i++){
1671
            av_freep(&mov->dv_fctx->streams[i]->codec);
1672
            av_freep(&mov->dv_fctx->streams[i]);
1673
        }
1674
        av_freep(&mov->dv_fctx);
1675
        av_freep(&mov->dv_demux);
1676
    }
1677
    av_freep(&mov->ctab);
1678
    return 0;
1679
}
1680

    
1681
AVInputFormat mov_demuxer = {
1682
    "mov,mp4,m4a,3gp,3g2,mj2",
1683
    "QuickTime/MPEG4/Motion JPEG 2000 format",
1684
    sizeof(MOVContext),
1685
    mov_probe,
1686
    mov_read_header,
1687
    mov_read_packet,
1688
    mov_read_close,
1689
    mov_read_seek,
1690
};