Statistics
| Branch: | Revision:

ffmpeg / libavformat / mov.c @ 5a757507

History | View | Annotate | Download (58.4 KB)

1
/*
2
 * MOV decoder.
3
 * Copyright (c) 2001 Fabrice Bellard.
4
 *
5
 * This library is free software; you can redistribute it and/or
6
 * modify it under the terms of the GNU Lesser General Public
7
 * License as published by the Free Software Foundation; either
8
 * version 2 of the License, or (at your option) any later version.
9
 *
10
 * This library is distributed in the hope that it will be useful,
11
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13
 * Lesser General Public License for more details.
14
 *
15
 * You should have received a copy of the GNU Lesser General Public
16
 * License along with this library; if not, write to the Free Software
17
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
18
 */
19

    
20
#include <limits.h>
21
 
22
#include "avformat.h"
23
#include "avi.h"
24

    
25
#ifdef CONFIG_ZLIB
26
#include <zlib.h>
27
#endif
28

    
29
/*
30
 * First version by Francois Revol revol@free.fr
31
 *
32
 * Features and limitations:
33
 * - reads most of the QT files I have (at least the structure),
34
 *   the exceptions are .mov with zlib compressed headers ('cmov' section). It shouldn't be hard to implement.
35
 *   FIXED, Francois Revol, 07/17/2002
36
 * - ffmpeg has nearly none of the usual QuickTime codecs,
37
 *   although I succesfully dumped raw and mp3 audio tracks off .mov files.
38
 *   Sample QuickTime files with mp3 audio can be found at: http://www.3ivx.com/showcase.html
39
 * - .mp4 parsing is still hazardous, although the format really is QuickTime with some minor changes
40
 *   (to make .mov parser crash maybe ?), despite what they say in the MPEG FAQ at
41
 *   http://mpeg.telecomitalialab.com/faq.htm
42
 * - 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/
45
 * when coding this :) (it's a writer anyway)
46
 *
47
 * Reference documents:
48
 * http://www.geocities.com/xhelmboyx/quicktime/formats/qtm-layout.txt
49
 * Apple:
50
 *  http://developer.apple.com/techpubs/quicktime/qtdevdocs/QTFF/qtff.html
51
 *  http://developer.apple.com/techpubs/quicktime/qtdevdocs/PDF/QTFileFormat.pdf
52
 * QuickTime is a trademark of Apple (AFAIK :))
53
 */
54

    
55
//#define DEBUG
56
#ifdef DEBUG
57
#include <stdio.h>
58
#include <fcntl.h>
59
#endif
60

    
61
#include "qtpalette.h"
62

    
63
/* allows chunk splitting - should work now... */
64
/* in case you can't read a file, try commenting */
65
#define MOV_SPLIT_CHUNKS
66

    
67
/* Special handling for movies created with Minolta Dimaxe Xi*/
68
/* this fix should not interfere with other .mov files, but just in case*/
69
#define MOV_MINOLTA_FIX
70

    
71
/* some streams in QT (and in MP4 mostly) aren't either video nor audio */
72
/* so we first list them as this, then clean up the list of streams we give back, */
73
/* getting rid of these */
74
#define CODEC_TYPE_MOV_OTHER        (enum CodecType) 2
75

    
76
static const CodecTag mov_video_tags[] = {
77
/*  { CODEC_ID_, MKTAG('c', 'v', 'i', 'd') }, *//* Cinepak */
78
/*  { CODEC_ID_H263, MKTAG('r', 'a', 'w', ' ') }, *//* Uncompressed RGB */
79
/*  { CODEC_ID_H263, MKTAG('Y', 'u', 'v', '2') }, *//* Uncompressed YUV422 */
80
/*    { CODEC_ID_RAWVIDEO, MKTAG('A', 'V', 'U', 'I') }, *//* YUV with alpha-channel (AVID Uncompressed) */
81
/* Graphics */
82
/* Animation */
83
/* Apple video */
84
/* Kodak Photo CD */
85
    { CODEC_ID_MJPEG, MKTAG('j', 'p', 'e', 'g') }, /* PhotoJPEG */
86
    { CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'e', 'g') }, /* MPEG */
87
    { CODEC_ID_MJPEG, MKTAG('m', 'j', 'p', 'a') }, /* Motion-JPEG (format A) */
88
    { CODEC_ID_MJPEG, MKTAG('m', 'j', 'p', 'b') }, /* Motion-JPEG (format B) */
89
    { CODEC_ID_MJPEG, MKTAG('A', 'V', 'D', 'J') }, /* MJPEG with alpha-channel (AVID JFIF meridien compressed) */
90
/*    { CODEC_ID_MJPEG, MKTAG('A', 'V', 'R', 'n') }, *//* MJPEG with alpha-channel (AVID ABVB/Truevision NuVista) */
91
/*    { CODEC_ID_GIF, MKTAG('g', 'i', 'f', ' ') }, *//* embedded gif files as frames (usually one "click to play movie" frame) */
92
/* Sorenson video */
93
    { CODEC_ID_SVQ1, MKTAG('S', 'V', 'Q', '1') }, /* Sorenson Video v1 */
94
    { CODEC_ID_SVQ1, MKTAG('s', 'v', 'q', '1') }, /* Sorenson Video v1 */
95
    { CODEC_ID_SVQ1, MKTAG('s', 'v', 'q', 'i') }, /* Sorenson Video v1 (from QT specs)*/
96
    { CODEC_ID_SVQ3, MKTAG('S', 'V', 'Q', '3') }, /* Sorenson Video v3 */
97
    { CODEC_ID_MPEG4, MKTAG('m', 'p', '4', 'v') },
98
    { CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', 'X') }, /* OpenDiVX *//* sample files at http://heroinewarrior.com/xmovie.php3 use this tag */
99
    { CODEC_ID_MPEG4, MKTAG('X', 'V', 'I', 'D') },
100
/*    { CODEC_ID_, MKTAG('I', 'V', '5', '0') }, *//* Indeo 5.0 */
101
    { CODEC_ID_H263, MKTAG('h', '2', '6', '3') }, /* H263 */
102
    { CODEC_ID_H263, MKTAG('s', '2', '6', '3') }, /* H263 ?? works */
103
    { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', ' ') }, /* DV NTSC */
104
    { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', 'p') }, /* DV PAL */
105
/*    { CODEC_ID_DVVIDEO, MKTAG('A', 'V', 'd', 'v') }, *//* AVID dv */
106
    { CODEC_ID_VP3, MKTAG('V', 'P', '3', '1') }, /* On2 VP3 */
107
    { CODEC_ID_RPZA, MKTAG('r', 'p', 'z', 'a') }, /* Apple Video (RPZA) */
108
    { CODEC_ID_CINEPAK, MKTAG('c', 'v', 'i', 'd') }, /* Cinepak */
109
    { CODEC_ID_8BPS, MKTAG('8', 'B', 'P', 'S') }, /* Planar RGB (8BPS) */
110
    { CODEC_ID_SMC, MKTAG('s', 'm', 'c', ' ') }, /* Apple Graphics (SMC) */
111
    { CODEC_ID_QTRLE, MKTAG('r', 'l', 'e', ' ') }, /* Apple Animation (RLE) */
112
    { CODEC_ID_NONE, 0 },
113
};
114

    
115
static const CodecTag mov_audio_tags[] = {
116
/*    { CODEC_ID_PCM_S16BE, MKTAG('N', 'O', 'N', 'E') }, *//* uncompressed */
117
    { CODEC_ID_PCM_S16BE, MKTAG('t', 'w', 'o', 's') }, /* 16 bits */
118
    /* { CODEC_ID_PCM_S8, MKTAG('t', 'w', 'o', 's') },*/ /* 8 bits */
119
    { CODEC_ID_PCM_U8, MKTAG('r', 'a', 'w', ' ') }, /* 8 bits unsigned */
120
    { CODEC_ID_PCM_S16LE, MKTAG('s', 'o', 'w', 't') }, /*  */
121
    { CODEC_ID_PCM_MULAW, MKTAG('u', 'l', 'a', 'w') }, /*  */
122
    { CODEC_ID_PCM_ALAW, MKTAG('a', 'l', 'a', 'w') }, /*  */
123
    { CODEC_ID_ADPCM_IMA_QT, MKTAG('i', 'm', 'a', '4') }, /* IMA-4 ADPCM */
124
    { CODEC_ID_MACE3, MKTAG('M', 'A', 'C', '3') }, /* Macintosh Audio Compression and Expansion 3:1 */
125
    { CODEC_ID_MACE6, MKTAG('M', 'A', 'C', '6') }, /* Macintosh Audio Compression and Expansion 6:1 */
126

    
127
    { CODEC_ID_MP2, MKTAG('.', 'm', 'p', '3') }, /* MPEG layer 3 */ /* sample files at http://www.3ivx.com/showcase.html use this tag */
128
    { CODEC_ID_MP2, 0x6D730055 }, /* MPEG layer 3 */
129
    { CODEC_ID_MP2, 0x5500736D }, /* MPEG layer 3 *//* XXX: check endianness */
130
/*    { CODEC_ID_OGG_VORBIS, MKTAG('O', 'g', 'g', 'S') }, *//* sample files at http://heroinewarrior.com/xmovie.php3 use this tag */
131
/* MP4 tags */
132
    { CODEC_ID_MPEG4AAC, MKTAG('m', 'p', '4', 'a') }, /* MPEG-4 AAC */
133
    /* The standard for mpeg4 audio is still not normalised AFAIK anyway */
134
    { CODEC_ID_AMR_NB, MKTAG('s', 'a', 'm', 'r') }, /* AMR-NB 3gp */
135
    { CODEC_ID_AMR_WB, MKTAG('s', 'a', 'w', 'b') }, /* AMR-WB 3gp */
136
    { CODEC_ID_AC3, MKTAG('m', 's', 0x20, 0x00) }, /* Dolby AC-3 */
137
    { CODEC_ID_NONE, 0 },
138
};
139

    
140
/* the QuickTime file format is quite convoluted...
141
 * it has lots of index tables, each indexing something in another one...
142
 * Here we just use what is needed to read the chunks
143
 */
144

    
145
typedef struct MOV_sample_to_chunk_tbl {
146
    long first;
147
    long count;
148
    long id;
149
} MOV_sample_to_chunk_tbl;
150

    
151
typedef struct {
152
    uint32_t type;
153
    int64_t offset;
154
    int64_t size; /* total size (excluding the size and type fields) */
155
} MOV_atom_t;
156

    
157
typedef struct {
158
    int seed;
159
    int flags;
160
    int size;
161
    void* clrs;
162
} MOV_ctab_t;
163

    
164
typedef struct {
165
    uint8_t  version;
166
    uint32_t flags; // 24bit
167

    
168
    /* 0x03 ESDescrTag */
169
    uint16_t es_id;
170
#define MP4ODescrTag                        0x01
171
#define MP4IODescrTag                        0x02
172
#define MP4ESDescrTag                        0x03
173
#define MP4DecConfigDescrTag                0x04
174
#define MP4DecSpecificDescrTag                0x05
175
#define MP4SLConfigDescrTag                0x06
176
#define MP4ContentIdDescrTag                0x07
177
#define MP4SupplContentIdDescrTag        0x08
178
#define MP4IPIPtrDescrTag                0x09
179
#define MP4IPMPPtrDescrTag                0x0A
180
#define MP4IPMPDescrTag                        0x0B
181
#define MP4RegistrationDescrTag                0x0D
182
#define MP4ESIDIncDescrTag                0x0E
183
#define MP4ESIDRefDescrTag                0x0F
184
#define MP4FileIODescrTag                0x10
185
#define MP4FileODescrTag                0x11
186
#define MP4ExtProfileLevelDescrTag        0x13
187
#define MP4ExtDescrTagsStart                0x80
188
#define MP4ExtDescrTagsEnd                0xFE
189
    uint8_t  stream_priority;
190

    
191
    /* 0x04 DecConfigDescrTag */
192
    uint8_t  object_type_id;
193
    uint8_t  stream_type;
194
    /* XXX: really streamType is
195
     * only 6bit, followed by:
196
     * 1bit  upStream
197
     * 1bit  reserved
198
     */
199
    uint32_t buffer_size_db; // 24
200
    uint32_t max_bitrate;
201
    uint32_t avg_bitrate;
202

    
203
    /* 0x05 DecSpecificDescrTag */
204
    uint8_t  decoder_cfg_len;
205
    uint8_t *decoder_cfg;
206

    
207
    /* 0x06 SLConfigDescrTag */
208
    uint8_t  sl_config_len;
209
    uint8_t *sl_config;
210
} MOV_esds_t;
211

    
212
struct MOVParseTableEntry;
213

    
214
typedef struct MOVStreamContext {
215
    int ffindex; /* the ffmpeg stream id */
216
    int is_ff_stream; /* Is this stream presented to ffmpeg ? i.e. is this an audio or video stream ? */
217
    long next_chunk;
218
    long chunk_count;
219
    int64_t *chunk_offsets;
220
    long sample_to_chunk_sz;
221
    MOV_sample_to_chunk_tbl *sample_to_chunk;
222
    long sample_to_chunk_index;
223
    long sample_size;
224
    long sample_count;
225
    long *sample_sizes;
226
    long keyframe_count;
227
    long *keyframes;
228
    int time_scale;
229
    long current_sample;
230
    long left_in_chunk; /* how many samples before next chunk */
231
    /* specific MPEG4 header which is added at the beginning of the stream */
232
    int header_len;
233
    uint8_t *header_data;
234
    MOV_esds_t esds;
235
} MOVStreamContext;
236

    
237
typedef struct MOVContext {
238
    int mp4; /* set to 1 as soon as we are sure that the file is an .mp4 file (even some header parsing depends on this) */
239
    AVFormatContext *fc;
240
    int time_scale;
241
    int duration; /* duration of the longest track */
242
    int found_moov; /* when both 'moov' and 'mdat' sections has been found */
243
    int found_mdat; /* we suppose we have enough data to read the file */
244
    int64_t mdat_size;
245
    int64_t mdat_offset;
246
    int total_streams;
247
    /* some streams listed here aren't presented to the ffmpeg API, since they aren't either video nor audio
248
     * but we need the info to be able to skip data from those streams in the 'mdat' section
249
     */
250
    MOVStreamContext *streams[MAX_STREAMS];
251

    
252
    int64_t next_chunk_offset;
253
    MOVStreamContext *partial; /* != 0 : there is still to read in the current chunk */
254
    int ctab_size;
255
    MOV_ctab_t **ctab;           /* color tables */
256
    const struct MOVParseTableEntry *parse_table; /* could be eventually used to change the table */
257
    /* NOTE: for recursion save to/ restore from local variable! */
258

    
259
    AVPaletteControl palette_control;
260
} MOVContext;
261

    
262

    
263
/* XXX: it's the first time I make a recursive parser I think... sorry if it's ugly :P */
264

    
265
/* those functions parse an atom */
266
/* return code:
267
 1: found what I wanted, exit
268
 0: continue to parse next atom
269
 -1: error occured, exit
270
 */
271
typedef int (*mov_parse_function)(MOVContext *ctx, ByteIOContext *pb, MOV_atom_t atom);
272

    
273
/* links atom IDs to parse functions */
274
typedef struct MOVParseTableEntry {
275
    uint32_t type;
276
    mov_parse_function func;
277
} MOVParseTableEntry;
278

    
279
#ifdef DEBUG
280
/*
281
 * XXX: static sux, even more in a multithreaded environment...
282
 * Avoid them. This is here just to help debugging.
283
 */
284
static int debug_indent = 0;
285
void print_atom(const char *str, MOV_atom_t atom)
286
{
287
    unsigned int tag, i;
288
    tag = (unsigned int) atom.type;
289
    i=debug_indent;
290
    if(tag == 0) tag = MKTAG('N', 'U', 'L', 'L');
291
    while(i--)
292
        printf("|");
293
    printf("parse:");
294
    printf(" %s: tag=%c%c%c%c offset=0x%x size=0x%x\n",
295
           str, tag & 0xff,
296
           (tag >> 8) & 0xff,
297
           (tag >> 16) & 0xff,
298
           (tag >> 24) & 0xff,
299
           (unsigned int)atom.offset,
300
           (unsigned int)atom.size);
301
    assert((unsigned int)atom.size < 0x7fffffff);// catching errors
302
}
303
#else
304
#define print_atom(a,b)
305
#endif
306

    
307

    
308
static int mov_read_leaf(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
309
{
310
    print_atom("leaf", atom);
311

    
312
    if (atom.size>1)
313
        url_fskip(pb, atom.size);
314
/*        url_seek(pb, atom_offset+atom.size, SEEK_SET); */
315
    return 0;
316
}
317

    
318
static int mov_read_default(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
319
{
320
    int64_t total_size = 0;
321
    MOV_atom_t a;
322
    int i;
323
    int err = 0;
324

    
325
#ifdef DEBUG
326
    print_atom("default", atom);
327
    debug_indent++;
328
#endif
329

    
330
    a.offset = atom.offset;
331

    
332
    if (atom.size < 0)
333
        atom.size = 0x7fffffffffffffffLL;
334
    while(((total_size + 8) < atom.size) && !url_feof(pb) && !err) {
335
        a.size = atom.size;
336
        a.type=0L;
337
        if(atom.size >= 8) {
338
            a.size = get_be32(pb);
339
            a.type = get_le32(pb);
340
        }
341
        total_size += 8;
342
        a.offset += 8;
343
        //printf("type: %08x  %.4s  sz: %Lx  %Lx   %Lx\n", type, (char*)&type, size, atom.size, total_size);
344
        if (a.size == 1) { /* 64 bit extended size */
345
            a.size = get_be64(pb) - 8;
346
            a.offset += 8;
347
            total_size += 8;
348
        }
349
        if (a.size == 0) {
350
            a.size = atom.size - total_size;
351
            if (a.size <= 8)
352
                break;
353
        }
354
        for (i = 0; c->parse_table[i].type != 0L
355
             && c->parse_table[i].type != a.type; i++)
356
            /* empty */;
357

    
358
        a.size -= 8;
359
//        printf(" i=%ld\n", i);
360
        if (c->parse_table[i].type == 0) { /* skip leaf atoms data */
361
//            url_seek(pb, atom.offset+atom.size, SEEK_SET);
362
#ifdef DEBUG
363
            print_atom("unknown", a);
364
#endif
365
            url_fskip(pb, a.size);
366
        } else {
367
#ifdef DEBUG
368
            //char b[5] = { type & 0xff, (type >> 8) & 0xff, (type >> 16) & 0xff, (type >> 24) & 0xff, 0 };
369
            //print_atom(b, type, offset, size);
370
#endif
371
            err = (c->parse_table[i].func)(c, pb, a);
372
        }
373

    
374
        a.offset += a.size;
375
        total_size += a.size;
376
    }
377

    
378
    if (!err && total_size < atom.size && atom.size < 0x7ffff) {
379
        //printf("RESET  %Ld  %Ld  err:%d\n", atom.size, total_size, err);
380
        url_fskip(pb, atom.size - total_size);
381
    }
382

    
383
#ifdef DEBUG
384
    debug_indent--;
385
#endif
386
    return err;
387
}
388

    
389
static int mov_read_ctab(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
390
{
391
    unsigned int len;
392
    MOV_ctab_t *t;
393
    //url_fskip(pb, atom.size); // for now
394
    c->ctab = av_realloc(c->ctab, ++c->ctab_size);
395
    t = c->ctab[c->ctab_size];
396
    t->seed = get_be32(pb);
397
    t->flags = get_be16(pb);
398
    t->size = get_be16(pb) + 1;
399
    len = 2 * t->size * 4;
400
    if (len > 0) {
401
        t->clrs = av_malloc(len); // 16bit A R G B
402
        if (t->clrs)
403
            get_buffer(pb, t->clrs, len);
404
    }
405

    
406
    return 0;
407
}
408

    
409
static int mov_read_hdlr(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
410
{
411
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
412
    int len = 0;
413
    uint32_t type;
414
    uint32_t ctype;
415

    
416
    print_atom("hdlr", atom);
417

    
418
    get_byte(pb); /* version */
419
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
420

    
421
    /* component type */
422
    ctype = get_le32(pb);
423
    type = get_le32(pb); /* component subtype */
424

    
425
#ifdef DEBUG
426
    printf("ctype= %c%c%c%c (0x%08lx)\n", *((char *)&ctype), ((char *)&ctype)[1], ((char *)&ctype)[2], ((char *)&ctype)[3], (long) ctype);
427
    printf("stype= %c%c%c%c\n", *((char *)&type), ((char *)&type)[1], ((char *)&type)[2], ((char *)&type)[3]);
428
#endif
429
#ifdef DEBUG
430
/* XXX: yeah this is ugly... */
431
    if(ctype == MKTAG('m', 'h', 'l', 'r')) { /* MOV */
432
        if(type == MKTAG('v', 'i', 'd', 'e'))
433
            puts("hdlr: vide");
434
        else if(type == MKTAG('s', 'o', 'u', 'n'))
435
            puts("hdlr: soun");
436
    } else if(ctype == 0) { /* MP4 */
437
        if(type == MKTAG('v', 'i', 'd', 'e'))
438
            puts("hdlr: vide");
439
        else if(type == MKTAG('s', 'o', 'u', 'n'))
440
            puts("hdlr: soun");
441
        else if(type == MKTAG('o', 'd', 's', 'm'))
442
            puts("hdlr: odsm");
443
        else if(type == MKTAG('s', 'd', 's', 'm'))
444
            puts("hdlr: sdsm");
445
    } else puts("hdlr: meta");
446
#endif
447

    
448
    if(ctype == MKTAG('m', 'h', 'l', 'r')) { /* MOV */
449
        /* helps parsing the string hereafter... */
450
        c->mp4 = 0;
451
        if(type == MKTAG('v', 'i', 'd', 'e'))
452
            st->codec.codec_type = CODEC_TYPE_VIDEO;
453
        else if(type == MKTAG('s', 'o', 'u', 'n'))
454
            st->codec.codec_type = CODEC_TYPE_AUDIO;
455
    } else if(ctype == 0) { /* MP4 */
456
        /* helps parsing the string hereafter... */
457
        c->mp4 = 1;
458
        if(type == MKTAG('v', 'i', 'd', 'e'))
459
            st->codec.codec_type = CODEC_TYPE_VIDEO;
460
        else if(type == MKTAG('s', 'o', 'u', 'n'))
461
            st->codec.codec_type = CODEC_TYPE_AUDIO;
462
    }
463
    get_be32(pb); /* component  manufacture */
464
    get_be32(pb); /* component flags */
465
    get_be32(pb); /* component flags mask */
466

    
467
    if(atom.size <= 24)
468
        return 0; /* nothing left to read */
469
    /* XXX: MP4 uses a C string, not a pascal one */
470
    /* component name */
471

    
472
    if(c->mp4) {
473
        /* .mp4: C string */
474
        while(get_byte(pb) && (++len < (atom.size - 24)));
475
    } else {
476
        /* .mov: PASCAL string */
477
#ifdef DEBUG
478
        char* buf;
479
#endif
480
        len = get_byte(pb);
481
#ifdef DEBUG
482
        buf = (uint8_t*) av_malloc(len+1);
483
        if (buf) {
484
            get_buffer(pb, buf, len);
485
            buf[len] = '\0';
486
            printf("**buf='%s'\n", buf);
487
            av_free(buf);
488
        } else
489
#endif
490
            url_fskip(pb, len);
491
    }
492

    
493
    return 0;
494
}
495

    
496
static int mov_mp4_read_descr_len(ByteIOContext *pb)
497
{
498
    int len = 0;
499
    int count = 4;
500
    while (count--) {
501
        int c = get_byte(pb);
502
        len = (len << 7) | (c & 0x7f);
503
        if (!(c & 0x80))
504
            break;
505
    }
506
    return len;
507
}
508

    
509
static int mov_mp4_read_descr(ByteIOContext *pb, int *tag)
510
{
511
    int len;
512
    *tag = get_byte(pb);
513
    len = mov_mp4_read_descr_len(pb);
514
#ifdef DEBUG
515
    printf("MPEG4 description: tag=0x%02x len=%d\n", *tag, len);
516
#endif
517
    return len;
518
}
519

    
520
static inline unsigned int get_be24(ByteIOContext *s)
521
{
522
    unsigned int val;
523
    val = get_byte(s) << 16;
524
    val |= get_byte(s) << 8;
525
    val |= get_byte(s);
526
    return val;
527
}
528

    
529
static int mov_read_esds(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
530
{
531
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
532
    MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
533
    int64_t start_pos = url_ftell(pb);
534
    int tag, len;
535

    
536
    print_atom("esds", atom);
537

    
538
    /* Well, broken but suffisant for some MP4 streams */
539
    get_be32(pb); /* version + flags */
540
    len = mov_mp4_read_descr(pb, &tag);
541
    if (tag == MP4ESDescrTag) {
542
        get_be16(pb); /* ID */
543
        get_byte(pb); /* priority */
544
    } else
545
        get_be16(pb); /* ID */
546

    
547
    len = mov_mp4_read_descr(pb, &tag);
548
    if (tag == MP4DecConfigDescrTag) {
549
        sc->esds.object_type_id = get_byte(pb);
550
        sc->esds.stream_type = get_byte(pb);
551
        sc->esds.buffer_size_db = get_be24(pb);
552
        sc->esds.max_bitrate = get_be32(pb);
553
        sc->esds.avg_bitrate = get_be32(pb);
554

    
555
        len = mov_mp4_read_descr(pb, &tag);
556
        //printf("LEN %d  TAG %d  m:%d a:%d\n", len, tag, sc->esds.max_bitrate, sc->esds.avg_bitrate);
557
        if (tag == MP4DecSpecificDescrTag) {
558
#ifdef DEBUG
559
            printf("Specific MPEG4 header len=%d\n", len);
560
#endif
561
            st->codec.extradata = (uint8_t*) av_mallocz(len);
562
            if (st->codec.extradata) {
563
                get_buffer(pb, st->codec.extradata, len);
564
                st->codec.extradata_size = len;
565
            }
566
        }
567
    }
568
    /* in any case, skip garbage */
569
    url_fskip(pb, atom.size - ((url_ftell(pb) - start_pos)));
570
    return 0;
571
}
572

    
573
/* this atom contains actual media data */
574
static int mov_read_mdat(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
575
{
576
    print_atom("mdat", atom);
577

    
578
    if(atom.size == 0) /* wrong one (MP4) */
579
        return 0;
580
    c->found_mdat=1;
581
    c->mdat_offset = atom.offset;
582
    c->mdat_size = atom.size;
583
    if(c->found_moov)
584
        return 1; /* found both, just go */
585
    url_fskip(pb, atom.size);
586
    return 0; /* now go for moov */
587
}
588

    
589
/* this atom should contain all header atoms */
590
static int mov_read_moov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
591
{
592
    int err;
593

    
594
    print_atom("moov", atom);
595

    
596
    err = mov_read_default(c, pb, atom);
597
    /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
598
    /* so we don't parse the whole file if over a network */
599
    c->found_moov=1;
600
    if(c->found_mdat)
601
        return 1; /* found both, just go */
602
    return 0; /* now go for mdat */
603
}
604

    
605

    
606
static int mov_read_mdhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
607
{
608
    print_atom("mdhd", atom);
609

    
610
    get_byte(pb); /* version */
611

    
612
    get_byte(pb); get_byte(pb);
613
    get_byte(pb); /* flags */
614

    
615
    get_be32(pb); /* creation time */
616
    get_be32(pb); /* modification time */
617

    
618
    c->streams[c->total_streams]->time_scale = get_be32(pb);
619

    
620
#ifdef DEBUG
621
    printf("track[%i].time_scale = %i\n", c->fc->nb_streams-1, c->streams[c->total_streams]->time_scale); /* time scale */
622
#endif
623
    get_be32(pb); /* duration */
624

    
625
    get_be16(pb); /* language */
626
    get_be16(pb); /* quality */
627

    
628
    return 0;
629
}
630

    
631
static int mov_read_mvhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
632
{
633
    print_atom("mvhd", atom);
634

    
635
    get_byte(pb); /* version */
636
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
637

    
638
    get_be32(pb); /* creation time */
639
    get_be32(pb); /* modification time */
640
    c->time_scale = get_be32(pb); /* time scale */
641
#ifdef DEBUG
642
    printf("time scale = %i\n", c->time_scale);
643
#endif
644
    c->duration = get_be32(pb); /* duration */
645
    get_be32(pb); /* preferred scale */
646

    
647
    get_be16(pb); /* preferred volume */
648

    
649
    url_fskip(pb, 10); /* reserved */
650

    
651
    url_fskip(pb, 36); /* display matrix */
652

    
653
    get_be32(pb); /* preview time */
654
    get_be32(pb); /* preview duration */
655
    get_be32(pb); /* poster time */
656
    get_be32(pb); /* selection time */
657
    get_be32(pb); /* selection duration */
658
    get_be32(pb); /* current time */
659
    get_be32(pb); /* next track ID */
660

    
661
    return 0;
662
}
663

    
664
static int mov_read_smi(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
665
{
666
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
667

    
668
    // currently SVQ3 decoder expect full STSD header - so let's fake it
669
    // this should be fixed and just SMI header should be passed
670
    av_free(st->codec.extradata);
671
    st->codec.extradata_size = 0x5a + atom.size;
672
    st->codec.extradata = (uint8_t*) av_mallocz(st->codec.extradata_size);
673

    
674
    if (st->codec.extradata) {
675
        strcpy(st->codec.extradata, "SVQ3"); // fake
676
        get_buffer(pb, st->codec.extradata + 0x5a, atom.size);
677
        //printf("Reading SMI %Ld  %s\n", atom.size, (char*)st->codec.extradata + 0x5a);
678
    } else
679
        url_fskip(pb, atom.size);
680

    
681
    return 0;
682
}
683

    
684
static int mov_read_stco(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
685
{
686
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
687
    MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
688
    int entries, i;
689

    
690
    print_atom("stco", atom);
691

    
692
    get_byte(pb); /* version */
693
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
694

    
695
    entries = get_be32(pb);
696
    sc->chunk_count = entries;
697
    sc->chunk_offsets = (int64_t*) av_malloc(entries * sizeof(int64_t));
698
    if (!sc->chunk_offsets)
699
        return -1;
700
    if (atom.type == MKTAG('s', 't', 'c', 'o')) {
701
        for(i=0; i<entries; i++) {
702
            sc->chunk_offsets[i] = get_be32(pb);
703
        }
704
    } else if (atom.type == MKTAG('c', 'o', '6', '4')) {
705
        for(i=0; i<entries; i++) {
706
            sc->chunk_offsets[i] = get_be64(pb);
707
        }
708
    } else
709
        return -1;
710
#ifdef DEBUG
711
/*
712
    for(i=0; i<entries; i++) {
713
        printf("chunk offset=0x%Lx\n", sc->chunk_offsets[i]);
714
    }
715
*/
716
#endif
717
    return 0;
718
}
719

    
720
static int mov_read_stsd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
721
{
722
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
723
    //MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
724
    int entries, frames_per_sample;
725
    uint32_t format;
726

    
727
    /* for palette traversal */
728
    int color_depth;
729
    int color_start;
730
    int color_count;
731
    int color_end;
732
    int color_index;
733
    int color_dec;
734
    int color_greyscale;
735
    unsigned char *color_table;
736
    int j;
737
    unsigned char r, g, b;
738

    
739
    print_atom("stsd", atom);
740

    
741
    get_byte(pb); /* version */
742
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
743

    
744
    entries = get_be32(pb);
745

    
746
    while(entries--) { //Parsing Sample description table
747
        enum CodecID id;
748
        int size = get_be32(pb); /* size */
749
        format = get_le32(pb); /* data format */
750

    
751
        get_be32(pb); /* reserved */
752
        get_be16(pb); /* reserved */
753
        get_be16(pb); /* index */
754

    
755
        /* for MPEG4: set codec type by looking for it */
756
        id = codec_get_id(mov_video_tags, format);
757
        if (id >= 0) {
758
            AVCodec *codec;
759
            codec = avcodec_find_decoder(id);
760
            if (codec)
761
                st->codec.codec_type = codec->type;
762
        }
763
#ifdef DEBUG
764
        printf("size=%d 4CC= %c%c%c%c codec_type=%d\n",
765
               size,
766
               (format >> 0) & 0xff,
767
               (format >> 8) & 0xff,
768
               (format >> 16) & 0xff,
769
               (format >> 24) & 0xff,
770
               st->codec.codec_type);
771
#endif
772
        st->codec.codec_tag = format;
773
        if(st->codec.codec_type==CODEC_TYPE_VIDEO) {
774
            MOV_atom_t a = { 0, 0, 0 };
775
            st->codec.codec_id = id;
776
            get_be16(pb); /* version */
777
            get_be16(pb); /* revision level */
778
            get_be32(pb); /* vendor */
779
            get_be32(pb); /* temporal quality */
780
            get_be32(pb); /* spacial quality */
781
            st->codec.width = get_be16(pb); /* width */
782
            st->codec.height = get_be16(pb); /* height */
783
#if 1
784
            if (st->codec.codec_id == CODEC_ID_MPEG4) {
785
                /* in some MPEG4 the width/height are not correct, so
786
                   we ignore this info */
787
                st->codec.width = 0;
788
                st->codec.height = 0;
789
            }
790
#endif
791
            get_be32(pb); /* horiz resolution */
792
            get_be32(pb); /* vert resolution */
793
            get_be32(pb); /* data size, always 0 */
794
            frames_per_sample = get_be16(pb); /* frames per samples */
795
#ifdef DEBUG
796
            printf("frames/samples = %d\n", frames_per_sample);
797
#endif
798
            get_buffer(pb, (uint8_t *)st->codec.codec_name, 32); /* codec name */
799

    
800
            st->codec.bits_per_sample = get_be16(pb); /* depth */
801
            st->codec.color_table_id = get_be16(pb); /* colortable id */
802

    
803
/*          These are set in mov_read_stts and might already be set!
804
            st->codec.frame_rate      = 25;
805
            st->codec.frame_rate_base = 1;
806
*/
807
            size -= (16+8*4+2+32+2*2);
808
#if 0
809
            while (size >= 8) {
810
                MOV_atom_t a;
811
                int64_t start_pos;
812

813
                a.size = get_be32(pb);
814
                a.type = get_le32(pb);
815
                size -= 8;
816
#ifdef DEBUG
817
                printf("VIDEO: atom_type=%c%c%c%c atom.size=%Ld size_left=%d\n",
818
                       (a.type >> 0) & 0xff,
819
                       (a.type >> 8) & 0xff,
820
                       (a.type >> 16) & 0xff,
821
                       (a.type >> 24) & 0xff,
822
                       a.size, size);
823
#endif
824
                start_pos = url_ftell(pb);
825

    
826
                switch(a.type) {
827
                case MKTAG('e', 's', 'd', 's'):
828
                    {
829
                        int tag, len;
830
                        /* Well, broken but suffisant for some MP4 streams */
831
                        get_be32(pb); /* version + flags */
832
                        len = mov_mp4_read_descr(pb, &tag);
833
                        if (tag == 0x03) {
834
                            /* MP4ESDescrTag */
835
                            get_be16(pb); /* ID */
836
                            get_byte(pb); /* priority */
837
                            len = mov_mp4_read_descr(pb, &tag);
838
                            if (tag != 0x04)
839
                                goto fail;
840
                            /* MP4DecConfigDescrTag */
841
                            get_byte(pb); /* objectTypeId */
842
                            get_be32(pb); /* streamType + buffer size */
843
                            get_be32(pb); /* max bit rate */
844
                            get_be32(pb); /* avg bit rate */
845
                            len = mov_mp4_read_descr(pb, &tag);
846
                            if (tag != 0x05)
847
                                goto fail;
848
                            /* MP4DecSpecificDescrTag */
849
#ifdef DEBUG
850
                            printf("Specific MPEG4 header len=%d\n", len);
851
#endif
852
                            sc->header_data = av_mallocz(len);
853
                            if (sc->header_data) {
854
                                get_buffer(pb, sc->header_data, len);
855
                                sc->header_len = len;
856
                            }
857
                        }
858
                        /* in any case, skip garbage */
859
                    }
860
                    break;
861
                default:
862
                    break;
863
                }
864
            fail:
865
                printf("ATOMENEWSIZE %Ld   %d\n", atom.size, url_ftell(pb) - start_pos);
866
                if (atom.size > 8) {
867
                    url_fskip(pb, (atom.size - 8) -
868
                              ((url_ftell(pb) - start_pos)));
869
                    size -= atom.size - 8;
870
                }
871
            }
872
            if (size > 0) {
873
                /* unknown extension */
874
                url_fskip(pb, size);
875
            }
876
#else
877

    
878
            /* figure out the palette situation */
879
            color_depth = st->codec.bits_per_sample & 0x1F;
880
            color_greyscale = st->codec.bits_per_sample & 0x20;
881

    
882
            /* if the depth is 2, 4, or 8 bpp, file is palettized */
883
            if ((color_depth == 2) || (color_depth == 4) || 
884
                (color_depth == 8)) {
885

    
886
                if (color_greyscale) {
887

    
888
                    /* compute the greyscale palette */
889
                    color_count = 1 << color_depth;
890
                    color_index = 255;
891
                    color_dec = 256 / (color_count - 1);
892
                    for (j = 0; j < color_count; j++) {
893
                        r = g = b = color_index;
894
                        c->palette_control.palette[j] =
895
                            (r << 16) | (g << 8) | (b);
896
                        color_index -= color_dec;
897
                        if (color_index < 0)
898
                            color_index = 0;
899
                    }
900

    
901
                } else if (st->codec.color_table_id & 0x08) {
902

    
903
                    /* if flag bit 3 is set, use the default palette */
904
                    color_count = 1 << color_depth;
905
                    if (color_depth == 2)
906
                        color_table = qt_default_palette_4;
907
                    else if (color_depth == 4)
908
                        color_table = qt_default_palette_16;
909
                    else
910
                        color_table = qt_default_palette_256;
911

    
912
                    for (j = 0; j < color_count; j++) {
913
                        r = color_table[j * 4 + 0];
914
                        g = color_table[j * 4 + 1];
915
                        b = color_table[j * 4 + 2];
916
                        c->palette_control.palette[j] =
917
                            (r << 16) | (g << 8) | (b);
918
                    }
919

    
920
                } else {
921

    
922
                    /* load the palette from the file */
923
                    color_start = get_be32(pb);
924
                    color_count = get_be16(pb);
925
                    color_end = get_be16(pb);
926
                    for (j = color_start; j <= color_end; j++) {
927
                        /* each R, G, or B component is 16 bits;
928
                         * only use the top 8 bits; skip alpha bytes
929
                         * up front */
930
                        get_byte(pb);
931
                        get_byte(pb);
932
                        r = get_byte(pb);
933
                        get_byte(pb);
934
                        g = get_byte(pb);
935
                        get_byte(pb);
936
                        b = get_byte(pb);
937
                        get_byte(pb);
938
                        c->palette_control.palette[j] =
939
                            (r << 16) | (g << 8) | (b);
940
                    }
941
                }
942

    
943
                st->codec.palctrl = &c->palette_control;
944
                st->codec.palctrl->palette_changed = 1;
945
            } else
946
                st->codec.palctrl = NULL;
947

    
948
            a.size = size;
949
            mov_read_default(c, pb, a);
950
#endif
951
        } else {
952
            st->codec.codec_id = codec_get_id(mov_audio_tags, format);
953
            if(st->codec.codec_id==CODEC_ID_AMR_NB || st->codec.codec_id==CODEC_ID_AMR_WB) //from TS26.244
954
            {
955
#ifdef DEBUG
956
               printf("AMR-NB or AMR-WB audio identified!!\n");
957
#endif
958
               get_be32(pb);get_be32(pb); //Reserved_8
959
               get_be16(pb);//Reserved_2
960
               get_be16(pb);//Reserved_2
961
               get_be32(pb);//Reserved_4
962
               get_be16(pb);//TimeScale
963
               get_be16(pb);//Reserved_2
964

    
965
                //AMRSpecificBox.(10 bytes)
966
               
967
               get_be32(pb); //size
968
               get_be32(pb); //type=='damr'
969
               get_be32(pb); //vendor
970
               get_byte(pb); //decoder version
971
               get_be16(pb); //mode_set
972
               get_byte(pb); //mode_change_period
973
               get_byte(pb); //frames_per_sample
974

    
975
               st->duration = AV_NOPTS_VALUE;//Not possible to get from this info, must count number of AMR frames
976
               if(st->codec.codec_id==CODEC_ID_AMR_NB)
977
               {
978
                   st->codec.sample_rate=8000;
979
                   st->codec.channels=1;
980
               }
981
               else //AMR-WB
982
               {
983
                   st->codec.sample_rate=16000;
984
                   st->codec.channels=1;
985
               }
986
               st->codec.bits_per_sample=16;
987
               st->codec.bit_rate=0; /*It is not possible to tell this before we have 
988
                                       an audio frame and even then every frame can be different*/
989
            }
990
            else if( st->codec.codec_tag == MKTAG( 'm', 'p', '4', 's' ))
991
            {
992
                //This is some stuff for the hint track, lets ignore it!
993
                //Do some mp4 auto detect.
994
                c->mp4=1;
995
                size-=(16);
996
                url_fskip(pb, size); /* The mp4s atom also contians a esds atom that we can skip*/
997
            }
998
            else if(size>=(16+20))
999
            {//16 bytes read, reading atleast 20 more
1000
#ifdef DEBUG
1001
                printf("audio size=0x%X\n",size);
1002
#endif
1003
                uint16_t version = get_be16(pb); /* version */
1004
                get_be16(pb); /* revision level */
1005
                get_be32(pb); /* vendor */
1006

    
1007
                st->codec.channels = get_be16(pb);                /* channel count */
1008
                st->codec.bits_per_sample = get_be16(pb);        /* sample size */
1009

    
1010
                /* handle specific s8 codec */
1011
                get_be16(pb); /* compression id = 0*/
1012
                get_be16(pb); /* packet size = 0 */
1013

    
1014
                st->codec.sample_rate = ((get_be32(pb) >> 16));
1015
                //printf("CODECID %d  %d  %.4s\n", st->codec.codec_id, CODEC_ID_PCM_S16BE, (char*)&format);
1016

    
1017
                switch (st->codec.codec_id) {
1018
                case CODEC_ID_PCM_S16BE:
1019
                    if (st->codec.bits_per_sample == 8)
1020
                        st->codec.codec_id = CODEC_ID_PCM_S8;
1021
                    /* fall */
1022
                case CODEC_ID_PCM_U8:
1023
                    st->codec.bit_rate = st->codec.sample_rate * 8;
1024
                    break;
1025
                default:
1026
                    ;
1027
                }
1028

    
1029
                //Read QT version 1 fields. In version 0 theese dont exist
1030
#ifdef DEBUG
1031
                printf("version =%d mp4=%d\n",version,c->mp4);
1032
                printf("size-(16+20+16)=%d\n",size-(16+20+16));
1033
#endif
1034
                if((version==1) && size>=(16+20+16))
1035
                {
1036
                    get_be32(pb); /* samples per packet */
1037
                    get_be32(pb); /* bytes per packet */
1038
                    get_be32(pb); /* bytes per frame */
1039
                    get_be32(pb); /* bytes per sample */
1040
                    if(size>(16+20+16))
1041
                    {
1042
                        //Optional, additional atom-based fields
1043
#ifdef DEBUG
1044
                        printf("offest=0x%X, sizeleft=%d=0x%x,format=%c%c%c%c\n",(int)url_ftell(pb),size - (16 + 20 + 16 ),size - (16 + 20 + 16 ),
1045
                            (format >> 0) & 0xff,
1046
                            (format >> 8) & 0xff,
1047
                            (format >> 16) & 0xff,
1048
                            (format >> 24) & 0xff);
1049
#endif
1050
                        MOV_atom_t a = { format, url_ftell(pb), size - (16 + 20 + 16 + 8) };
1051
                        mov_read_default(c, pb, a);
1052
                    }
1053
                }
1054
                else
1055
                {
1056
                    //We should be down to 0 bytes here, but lets make sure.
1057
                    size-=(16+20);
1058
#ifdef DEBUG
1059
                    if(size>0)
1060
                        printf("skipping 0x%X bytes\n",size-(16+20));
1061
#endif
1062
                    url_fskip(pb, size);
1063
                }
1064
            }
1065
            else
1066
            {
1067
                size-=16;
1068
                //Unknown size, but lets do our best and skip the rest.
1069
#ifdef DEBUG
1070
                printf("Strange size, skipping 0x%X bytes\n",size);
1071
#endif
1072
                url_fskip(pb, size);
1073
            }
1074
        }
1075
    }
1076

    
1077
    return 0;
1078
}
1079

    
1080
static int mov_read_stsc(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1081
{
1082
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1083
    MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1084
    int entries, i;
1085

    
1086
    print_atom("stsc", atom);
1087

    
1088
    get_byte(pb); /* version */
1089
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1090

    
1091
    entries = get_be32(pb);
1092
#ifdef DEBUG
1093
printf("track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
1094
#endif
1095
    sc->sample_to_chunk_sz = entries;
1096
    sc->sample_to_chunk = (MOV_sample_to_chunk_tbl*) av_malloc(entries * sizeof(MOV_sample_to_chunk_tbl));
1097
    if (!sc->sample_to_chunk)
1098
        return -1;
1099
    for(i=0; i<entries; i++) {
1100
        sc->sample_to_chunk[i].first = get_be32(pb);
1101
        sc->sample_to_chunk[i].count = get_be32(pb);
1102
        sc->sample_to_chunk[i].id = get_be32(pb);
1103
#ifdef DEBUG
1104
/*        printf("sample_to_chunk first=%ld count=%ld, id=%ld\n", sc->sample_to_chunk[i].first, sc->sample_to_chunk[i].count, sc->sample_to_chunk[i].id); */
1105
#endif
1106
    }
1107
    return 0;
1108
}
1109

    
1110
static int mov_read_stss(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1111
{
1112
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1113
    MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1114
    int entries, i;
1115

    
1116
    print_atom("stss", atom);
1117

    
1118
    get_byte(pb); /* version */
1119
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1120

    
1121
    entries = get_be32(pb);
1122
    sc->keyframe_count = entries;
1123
#ifdef DEBUG
1124
    av_log(NULL, AV_LOG_DEBUG, "keyframe_count = %ld\n", sc->keyframe_count);
1125
#endif
1126
    sc->keyframes = (long*) av_malloc(entries * sizeof(long));
1127
    if (!sc->keyframes)
1128
        return -1;
1129
    for(i=0; i<entries; i++) {
1130
        sc->keyframes[i] = get_be32(pb);
1131
#ifdef DEBUG
1132
/*        av_log(NULL, AV_LOG_DEBUG, "keyframes[]=%ld\n", sc->keyframes[i]); */
1133
#endif
1134
    }
1135
    return 0;
1136
}
1137

    
1138
static int mov_read_stsz(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1139
{
1140
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1141
    MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1142
    int entries, i;
1143

    
1144
    print_atom("stsz", atom);
1145

    
1146
    get_byte(pb); /* version */
1147
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1148

    
1149
    sc->sample_size = get_be32(pb);
1150
    entries = get_be32(pb);
1151
    sc->sample_count = entries;
1152
#ifdef DEBUG
1153
    printf("sample_size = %ld sample_count = %ld\n", sc->sample_size, sc->sample_count);
1154
#endif
1155
    if(sc->sample_size)
1156
        return 0; /* there isn't any table following */
1157
    sc->sample_sizes = (long*) av_malloc(entries * sizeof(long));
1158
    if (!sc->sample_sizes)
1159
        return -1;
1160
    for(i=0; i<entries; i++) {
1161
        sc->sample_sizes[i] = get_be32(pb);
1162
#ifdef DEBUG
1163
/*        printf("sample_sizes[]=%ld\n", sc->sample_sizes[i]); */
1164
#endif
1165
    }
1166
    return 0;
1167
}
1168

    
1169
static int mov_read_stts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1170
{
1171
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1172
    //MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1173
    int entries, i;
1174
    int64_t duration=0;
1175
    int64_t total_sample_count=0;
1176

    
1177
    print_atom("stts", atom);
1178

    
1179
    get_byte(pb); /* version */
1180
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1181
    entries = get_be32(pb);
1182

    
1183

    
1184
#ifdef DEBUG
1185
printf("track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries);
1186
#endif
1187
    for(i=0; i<entries; i++) {
1188
        int sample_duration;
1189
        int sample_count;
1190

    
1191
        sample_count=get_be32(pb);
1192
        sample_duration = get_be32(pb);
1193
#ifdef DEBUG
1194
        printf("sample_count=%d, sample_duration=%d\n",sample_count,sample_duration);
1195
#endif
1196
        duration+=sample_duration*sample_count;
1197
        total_sample_count+=sample_count;
1198

    
1199
#if 0 //We calculate an average instead, needed by .mp4-files created with nec e606 3g phone
1200

1201
        if (!i && st->codec.codec_type==CODEC_TYPE_VIDEO) {
1202
            st->codec.frame_rate_base = sample_duration ? sample_duration : 1;
1203
            st->codec.frame_rate = c->streams[c->total_streams]->time_scale;
1204
#ifdef DEBUG
1205
            printf("VIDEO FRAME RATE= %i (sd= %i)\n", st->codec.frame_rate, sample_duration);
1206
#endif
1207
        }
1208
#endif
1209
    }
1210

    
1211
    /*The stsd atom which contain codec type sometimes comes after the stts so we cannot check for codec_type*/
1212
    if(duration>0)
1213
    {
1214
        av_reduce(
1215
            &st->codec.frame_rate, 
1216
            &st->codec.frame_rate_base, 
1217
            c->streams[c->total_streams]->time_scale * total_sample_count,
1218
            duration,
1219
            INT_MAX
1220
        );
1221

    
1222
#ifdef DEBUG
1223
        printf("FRAME RATE average (video or audio)= %f (tot sample count= %i ,tot dur= %i timescale=%d)\n", (float)st->codec.frame_rate/st->codec.frame_rate_base,total_sample_count,duration,c->streams[c->total_streams]->time_scale);
1224
#endif
1225
    }
1226
    else
1227
    {
1228
        st->codec.frame_rate_base = 1;
1229
        st->codec.frame_rate = c->streams[c->total_streams]->time_scale;
1230
    }
1231
    return 0;
1232
}
1233

    
1234
static int mov_read_trak(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1235
{
1236
    AVStream *st;
1237
    MOVStreamContext *sc;
1238

    
1239
    print_atom("trak", atom);
1240

    
1241
    st = av_new_stream(c->fc, c->fc->nb_streams);
1242
    if (!st) return -2;
1243
    sc = (MOVStreamContext*) av_mallocz(sizeof(MOVStreamContext));
1244
    if (!sc) {
1245
        av_free(st);
1246
        return -1;
1247
    }
1248

    
1249
    sc->sample_to_chunk_index = -1;
1250
    st->priv_data = sc;
1251
    st->codec.codec_type = CODEC_TYPE_MOV_OTHER;
1252
    st->start_time = 0; /* XXX: check */
1253
    st->duration = (c->duration * (int64_t)AV_TIME_BASE) / c->time_scale;
1254
    c->streams[c->fc->nb_streams-1] = sc;
1255

    
1256
    return mov_read_default(c, pb, atom);
1257
}
1258

    
1259
static int mov_read_tkhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1260
{
1261
    AVStream *st;
1262

    
1263
    print_atom("tkhd", atom);
1264

    
1265
    st = c->fc->streams[c->fc->nb_streams-1];
1266

    
1267
    get_byte(pb); /* version */
1268

    
1269
    get_byte(pb); get_byte(pb);
1270
    get_byte(pb); /* flags */
1271
    /*
1272
    MOV_TRACK_ENABLED 0x0001
1273
    MOV_TRACK_IN_MOVIE 0x0002
1274
    MOV_TRACK_IN_PREVIEW 0x0004
1275
    MOV_TRACK_IN_POSTER 0x0008
1276
    */
1277

    
1278
    get_be32(pb); /* creation time */
1279
    get_be32(pb); /* modification time */
1280
    st->id = (int)get_be32(pb); /* track id (NOT 0 !)*/
1281
    get_be32(pb); /* reserved */
1282
    st->start_time = 0; /* check */
1283
    st->duration = (get_be32(pb) * (int64_t)AV_TIME_BASE) / c->time_scale; /* duration */
1284
    get_be32(pb); /* reserved */
1285
    get_be32(pb); /* reserved */
1286

    
1287
    get_be16(pb); /* layer */
1288
    get_be16(pb); /* alternate group */
1289
    get_be16(pb); /* volume */
1290
    get_be16(pb); /* reserved */
1291

    
1292
    url_fskip(pb, 36); /* display matrix */
1293

    
1294
    /* those are fixed-point */
1295
    st->codec.width = get_be32(pb) >> 16; /* track width */
1296
    st->codec.height = get_be32(pb) >> 16; /* track height */
1297

    
1298
    return 0;
1299
}
1300

    
1301
/* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
1302
/* like the files created with Adobe Premiere 5.0, for samples see */
1303
/* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
1304
static int mov_read_wide(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1305
{
1306
    int err;
1307

    
1308
#ifdef DEBUG
1309
    print_atom("wide", atom);
1310
    debug_indent++;
1311
#endif
1312
    if (atom.size < 8)
1313
        return 0; /* continue */
1314
    if (get_be32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
1315
        url_fskip(pb, atom.size - 4);
1316
        return 0;
1317
    }
1318
    atom.type = get_le32(pb);
1319
    atom.offset += 8;
1320
    atom.size -= 8;
1321
    if (atom.type != MKTAG('m', 'd', 'a', 't')) {
1322
        url_fskip(pb, atom.size);
1323
        return 0;
1324
    }
1325
    err = mov_read_mdat(c, pb, atom);
1326
#ifdef DEBUG
1327
    debug_indent--;
1328
#endif
1329
    return err;
1330
}
1331

    
1332

    
1333
#ifdef CONFIG_ZLIB
1334
static int null_read_packet(void *opaque, uint8_t *buf, int buf_size)
1335
{
1336
    return -1;
1337
}
1338

    
1339
static int mov_read_cmov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1340
{
1341
    ByteIOContext ctx;
1342
    uint8_t *cmov_data;
1343
    uint8_t *moov_data; /* uncompressed data */
1344
    long cmov_len, moov_len;
1345
    int ret;
1346

    
1347
    print_atom("cmov", atom);
1348

    
1349
    get_be32(pb); /* dcom atom */
1350
    if (get_le32(pb) != MKTAG( 'd', 'c', 'o', 'm' ))
1351
        return -1;
1352
    if (get_le32(pb) != MKTAG( 'z', 'l', 'i', 'b' )) {
1353
        dprintf("unknown compression for cmov atom !");
1354
        return -1;
1355
    }
1356
    get_be32(pb); /* cmvd atom */
1357
    if (get_le32(pb) != MKTAG( 'c', 'm', 'v', 'd' ))
1358
        return -1;
1359
    moov_len = get_be32(pb); /* uncompressed size */
1360
    cmov_len = atom.size - 6 * 4;
1361

    
1362
    cmov_data = (uint8_t *) av_malloc(cmov_len);
1363
    if (!cmov_data)
1364
        return -1;
1365
    moov_data = (uint8_t *) av_malloc(moov_len);
1366
    if (!moov_data) {
1367
        av_free(cmov_data);
1368
        return -1;
1369
    }
1370
    get_buffer(pb, cmov_data, cmov_len);
1371
    if(uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
1372
        return -1;
1373
    if(init_put_byte(&ctx, moov_data, moov_len, 0, NULL, null_read_packet, NULL, NULL) != 0)
1374
        return -1;
1375
    ctx.buf_end = ctx.buffer + moov_len;
1376
    atom.type = MKTAG( 'm', 'o', 'o', 'v' );
1377
    atom.offset = 0;
1378
    atom.size = moov_len;
1379
#ifdef DEBUG
1380
    { int fd = open("/tmp/uncompheader.mov", O_WRONLY | O_CREAT); write(fd, moov_data, moov_len); close(fd); }
1381
#endif
1382
    ret = mov_read_default(c, &ctx, atom);
1383
    av_free(moov_data);
1384
    av_free(cmov_data);
1385

    
1386
    return ret;
1387
}
1388
#endif
1389

    
1390
static const MOVParseTableEntry mov_default_parse_table[] = {
1391
/* mp4 atoms */
1392
{ MKTAG( 'c', 'o', '6', '4' ), mov_read_stco },
1393
{ MKTAG( 'c', 'p', 'r', 't' ), mov_read_default },
1394
{ MKTAG( 'c', 'r', 'h', 'd' ), mov_read_default },
1395
{ MKTAG( 'c', 't', 't', 's' ), mov_read_leaf }, /* composition time to sample */
1396
{ MKTAG( 'd', 'i', 'n', 'f' ), mov_read_default }, /* data information */
1397
{ MKTAG( 'd', 'p', 'n', 'd' ), mov_read_leaf },
1398
{ MKTAG( 'd', 'r', 'e', 'f' ), mov_read_leaf },
1399
{ MKTAG( 'e', 'd', 't', 's' ), mov_read_default },
1400
{ MKTAG( 'e', 'l', 's', 't' ), mov_read_leaf },
1401
{ MKTAG( 'f', 'r', 'e', 'e' ), mov_read_leaf },
1402
{ MKTAG( 'h', 'd', 'l', 'r' ), mov_read_hdlr },
1403
{ MKTAG( 'h', 'i', 'n', 't' ), mov_read_leaf },
1404
{ MKTAG( 'h', 'm', 'h', 'd' ), mov_read_leaf },
1405
{ MKTAG( 'i', 'o', 'd', 's' ), mov_read_leaf },
1406
{ MKTAG( 'm', 'd', 'a', 't' ), mov_read_mdat },
1407
{ MKTAG( 'm', 'd', 'h', 'd' ), mov_read_mdhd },
1408
{ MKTAG( 'm', 'd', 'i', 'a' ), mov_read_default },
1409
{ MKTAG( 'm', 'i', 'n', 'f' ), mov_read_default },
1410
{ MKTAG( 'm', 'o', 'o', 'v' ), mov_read_moov },
1411
{ MKTAG( 'm', 'p', '4', 'a' ), mov_read_default },
1412
{ MKTAG( 'm', 'p', '4', 's' ), mov_read_default },
1413
{ MKTAG( 'm', 'p', '4', 'v' ), mov_read_default },
1414
{ MKTAG( 'm', 'p', 'o', 'd' ), mov_read_leaf },
1415
{ MKTAG( 'm', 'v', 'h', 'd' ), mov_read_mvhd },
1416
{ MKTAG( 'n', 'm', 'h', 'd' ), mov_read_leaf },
1417
{ MKTAG( 'o', 'd', 'h', 'd' ), mov_read_default },
1418
{ MKTAG( 's', 'd', 'h', 'd' ), mov_read_default },
1419
{ MKTAG( 's', 'k', 'i', 'p' ), mov_read_default },
1420
{ MKTAG( 's', 'm', 'h', 'd' ), mov_read_leaf }, /* sound media info header */
1421
{ MKTAG( 'S', 'M', 'I', ' ' ), mov_read_smi }, /* Sorrenson extension ??? */
1422
{ MKTAG( 's', 't', 'b', 'l' ), mov_read_default },
1423
{ MKTAG( 's', 't', 'c', 'o' ), mov_read_stco },
1424
{ MKTAG( 's', 't', 'd', 'p' ), mov_read_default },
1425
{ MKTAG( 's', 't', 's', 'c' ), mov_read_stsc },
1426
{ MKTAG( 's', 't', 's', 'd' ), mov_read_stsd }, /* sample description */
1427
{ MKTAG( 's', 't', 's', 'h' ), mov_read_default },
1428
{ MKTAG( 's', 't', 's', 's' ), mov_read_stss }, /* sync sample */
1429
{ MKTAG( 's', 't', 's', 'z' ), mov_read_stsz }, /* sample size */
1430
{ MKTAG( 's', 't', 't', 's' ), mov_read_stts },
1431
{ MKTAG( 't', 'k', 'h', 'd' ), mov_read_tkhd }, /* track header */
1432
{ MKTAG( 't', 'r', 'a', 'k' ), mov_read_trak },
1433
{ MKTAG( 't', 'r', 'e', 'f' ), mov_read_default }, /* not really */
1434
{ MKTAG( 'u', 'd', 't', 'a' ), mov_read_leaf },
1435
{ MKTAG( 'u', 'r', 'l', ' ' ), mov_read_leaf },
1436
{ MKTAG( 'u', 'r', 'n', ' ' ), mov_read_leaf },
1437
{ MKTAG( 'u', 'u', 'i', 'd' ), mov_read_default },
1438
{ MKTAG( 'v', 'm', 'h', 'd' ), mov_read_leaf }, /* video media info header */
1439
{ MKTAG( 'w', 'a', 'v', 'e' ), mov_read_default },
1440
/* extra mp4 */
1441
{ MKTAG( 'M', 'D', 'E', 'S' ), mov_read_leaf },
1442
/* QT atoms */
1443
{ MKTAG( 'c', 'h', 'a', 'p' ), mov_read_leaf },
1444
{ MKTAG( 'c', 'l', 'i', 'p' ), mov_read_default },
1445
{ MKTAG( 'c', 'r', 'g', 'n' ), mov_read_leaf },
1446
{ MKTAG( 'c', 't', 'a', 'b' ), mov_read_ctab },
1447
{ MKTAG( 'e', 's', 'd', 's' ), mov_read_esds },
1448
{ MKTAG( 'k', 'm', 'a', 't' ), mov_read_leaf },
1449
{ MKTAG( 'm', 'a', 't', 't' ), mov_read_default },
1450
{ MKTAG( 'r', 'd', 'r', 'f' ), mov_read_leaf },
1451
{ MKTAG( 'r', 'm', 'd', 'a' ), mov_read_default },
1452
{ MKTAG( 'r', 'm', 'd', 'r' ), mov_read_leaf },
1453
{ MKTAG( 'r', 'm', 'r', 'a' ), mov_read_default },
1454
{ MKTAG( 's', 'c', 'p', 't' ), mov_read_leaf },
1455
{ MKTAG( 's', 's', 'r', 'c' ), mov_read_leaf },
1456
{ MKTAG( 's', 'y', 'n', 'c' ), mov_read_leaf },
1457
{ MKTAG( 't', 'c', 'm', 'd' ), mov_read_leaf },
1458
{ MKTAG( 'w', 'i', 'd', 'e' ), mov_read_wide }, /* place holder */
1459
//{ MKTAG( 'r', 'm', 'q', 'u' ), mov_read_leaf },
1460
#ifdef CONFIG_ZLIB
1461
{ MKTAG( 'c', 'm', 'o', 'v' ), mov_read_cmov },
1462
#else
1463
{ MKTAG( 'c', 'm', 'o', 'v' ), mov_read_leaf },
1464
#endif
1465
{ 0L, mov_read_leaf }
1466
};
1467

    
1468
static void mov_free_stream_context(MOVStreamContext *sc)
1469
{
1470
    if(sc) {
1471
        av_free(sc->chunk_offsets);
1472
        av_free(sc->sample_to_chunk);
1473
        av_free(sc->sample_sizes);
1474
        av_free(sc->keyframes);
1475
        av_free(sc->header_data);
1476
        av_free(sc);
1477
    }
1478
}
1479

    
1480
static inline uint32_t mov_to_tag(uint8_t *buf)
1481
{
1482
    return MKTAG(buf[0], buf[1], buf[2], buf[3]);
1483
}
1484

    
1485
static inline uint32_t to_be32(uint8_t *buf)
1486
{
1487
    return (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3];
1488
}
1489

    
1490
/* XXX: is it sufficient ? */
1491
static int mov_probe(AVProbeData *p)
1492
{
1493
    unsigned int offset;
1494
    uint32_t tag;
1495

    
1496
    /* check file header */
1497
    if (p->buf_size <= 12)
1498
        return 0;
1499
    offset = 0;
1500
    for(;;) {
1501
        /* ignore invalid offset */
1502
        if ((offset + 8) > (unsigned int)p->buf_size)
1503
            return 0;
1504
        tag = mov_to_tag(p->buf + offset + 4);
1505
        switch(tag) {
1506
        case MKTAG( 'm', 'o', 'o', 'v' ):
1507
        case MKTAG( 'w', 'i', 'd', 'e' ):
1508
        case MKTAG( 'f', 'r', 'e', 'e' ):
1509
        case MKTAG( 'm', 'd', 'a', 't' ):
1510
        case MKTAG( 'p', 'n', 'o', 't' ): /* detect movs with preview pics like ew.mov and april.mov */
1511
        case MKTAG( 'u', 'd', 't', 'a' ): /* Packet Video PVAuthor adds this and a lot of more junk */
1512
            return AVPROBE_SCORE_MAX;
1513
        case MKTAG( 'f', 't', 'y', 'p' ):
1514
        case MKTAG( 's', 'k', 'i', 'p' ):
1515
            offset = to_be32(p->buf+offset) + offset;
1516
            break;
1517
        default:
1518
            /* unrecognized tag */
1519
            return 0;
1520
        }
1521
    }
1522
    return 0;
1523
}
1524

    
1525
static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
1526
{
1527
    MOVContext *mov = (MOVContext *) s->priv_data;
1528
    ByteIOContext *pb = &s->pb;
1529
    int i, j, nb, err;
1530
    MOV_atom_t atom = { 0, 0, 0 };
1531

    
1532
    mov->fc = s;
1533
    mov->parse_table = mov_default_parse_table;
1534
#if 0
1535
    /* XXX: I think we should auto detect */
1536
    if(s->iformat->name[1] == 'p')
1537
        mov->mp4 = 1;
1538
#endif
1539
    if(!url_is_streamed(pb)) /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
1540
        atom.size = url_filesize(url_fileno(pb));
1541
    else
1542
        atom.size = 0x7FFFFFFFFFFFFFFFLL;
1543

    
1544
#ifdef DEBUG
1545
    printf("filesz=%Ld\n", atom.size);
1546
#endif
1547

    
1548
    /* check MOV header */
1549
    err = mov_read_default(mov, pb, atom);
1550
    if (err<0 || (!mov->found_moov && !mov->found_mdat)) {
1551
        av_log(s, AV_LOG_ERROR, "mov: header not found !!! (err:%d, moov:%d, mdat:%d) pos:%lld\n",
1552
                err, mov->found_moov, mov->found_mdat, url_ftell(pb));
1553
        return -1;
1554
    }
1555
#ifdef DEBUG
1556
    printf("on_parse_exit_offset=%d\n", (int) url_ftell(pb));
1557
#endif
1558
    /* some cleanup : make sure we are on the mdat atom */
1559
    if(!url_is_streamed(pb) && (url_ftell(pb) != mov->mdat_offset))
1560
        url_fseek(pb, mov->mdat_offset, SEEK_SET);
1561

    
1562
    mov->next_chunk_offset = mov->mdat_offset; /* initialise reading */
1563

    
1564
#ifdef DEBUG
1565
    printf("mdat_reset_offset=%d\n", (int) url_ftell(pb));
1566
#endif
1567

    
1568
#ifdef DEBUG
1569
    printf("streams= %d\n", s->nb_streams);
1570
#endif
1571
    mov->total_streams = nb = s->nb_streams;
1572

    
1573
#if 1
1574
    for(i=0; i<s->nb_streams;) {
1575
        if(s->streams[i]->codec.codec_type == CODEC_TYPE_MOV_OTHER) {/* not audio, not video, delete */
1576
            av_free(s->streams[i]);
1577
            for(j=i+1; j<s->nb_streams; j++)
1578
                s->streams[j-1] = s->streams[j];
1579
            s->nb_streams--;
1580
        } else
1581
            i++;
1582
    }
1583
    for(i=0; i<s->nb_streams;i++) {
1584
        MOVStreamContext *sc;
1585
        sc = (MOVStreamContext *)s->streams[i]->priv_data;
1586
        sc->ffindex = i;
1587
        sc->is_ff_stream = 1;
1588
    }
1589
#endif
1590
#ifdef DEBUG
1591
    printf("real streams= %d\n", s->nb_streams);
1592
#endif
1593
    return 0;
1594
}
1595

    
1596
/* Yes, this is ugly... I didn't write the specs of QT :p */
1597
/* XXX:remove useless commented code sometime */
1598
static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
1599
{
1600
    MOVContext *mov = (MOVContext *) s->priv_data;
1601
    MOVStreamContext *sc;
1602
    int64_t offset = 0x0FFFFFFFFFFFFFFFLL;
1603
    int i, a, b, m;
1604
    int size;
1605
    size = 0x0FFFFFFF;
1606

    
1607
#ifdef MOV_SPLIT_CHUNKS
1608
    if (mov->partial) {
1609

    
1610
        int idx;
1611

    
1612
        sc = mov->partial;
1613
        idx = sc->sample_to_chunk_index;
1614

    
1615
        if (idx < 0) return 0;
1616
        size = sc->sample_sizes[sc->current_sample];
1617

    
1618
        sc->current_sample++;
1619
        sc->left_in_chunk--;
1620

    
1621
        if (sc->left_in_chunk <= 0)
1622
            mov->partial = 0;
1623
        offset = mov->next_chunk_offset;
1624
        /* extract the sample */
1625

    
1626
        goto readchunk;
1627
    }
1628
#endif
1629

    
1630
again:
1631
    sc = 0;
1632
    for(i=0; i<mov->total_streams; i++) {
1633
        MOVStreamContext *msc = mov->streams[i];
1634
        //printf("MOCHUNK %ld  %d   %p  pos:%Ld\n", mov->streams[i]->next_chunk, mov->total_streams, mov->streams[i], url_ftell(&s->pb));
1635
        if ((msc->next_chunk < msc->chunk_count) && msc->next_chunk >= 0
1636
           && (msc->chunk_offsets[msc->next_chunk] < offset)) {
1637
            sc = msc;
1638
            offset = msc->chunk_offsets[msc->next_chunk];
1639
            //printf("SELETED  %Ld  i:%d\n", offset, i);
1640
        }
1641
    }
1642
    if (!sc || offset==0x0FFFFFFFFFFFFFFFLL)
1643
        return -1;
1644

    
1645
    sc->next_chunk++;
1646

    
1647
    if(mov->next_chunk_offset < offset) { /* some meta data */
1648
        url_fskip(&s->pb, (offset - mov->next_chunk_offset));
1649
        mov->next_chunk_offset = offset;
1650
    }
1651

    
1652
//printf("chunk: [%i] %lli -> %lli\n", st_id, mov->next_chunk_offset, offset);
1653
    if(!sc->is_ff_stream) {
1654
        url_fskip(&s->pb, (offset - mov->next_chunk_offset));
1655
        mov->next_chunk_offset = offset;
1656
        offset = 0x0FFFFFFFFFFFFFFFLL;
1657
        goto again;
1658
    }
1659

    
1660
    /* now get the chunk size... */
1661

    
1662
    for(i=0; i<mov->total_streams; i++) {
1663
        MOVStreamContext *msc = mov->streams[i];
1664
        if ((msc->next_chunk < msc->chunk_count)
1665
            && ((msc->chunk_offsets[msc->next_chunk] - offset) < size))
1666
            size = msc->chunk_offsets[msc->next_chunk] - offset;
1667
    }
1668

    
1669
#ifdef MOV_MINOLTA_FIX
1670
    //Make sure that size is according to sample_size (Needed by .mov files 
1671
    //created on a Minolta Dimage Xi where audio chunks contains waste data in the end)
1672
    //Maybe we should really not only check sc->sample_size, but also sc->sample_sizes
1673
    //but I have no such movies
1674
    if (sc->sample_size > 0) { 
1675
        int foundsize=0;
1676
        for(i=0; i<(sc->sample_to_chunk_sz); i++) {
1677
            if( (sc->sample_to_chunk[i].first)<=(sc->next_chunk) && (sc->sample_size>0) )
1678
            {
1679
                // I can't figure out why for PCM audio sample_size is always 1
1680
                // (it should actually be channels*bits_per_second/8) but it is.
1681
                AVCodecContext* cod = &s->streams[sc->ffindex]->codec;
1682
                if (sc->sample_size == 1 && (cod->codec_id == CODEC_ID_PCM_S16BE || cod->codec_id == CODEC_ID_PCM_S16LE))
1683
                    foundsize=(sc->sample_to_chunk[i].count*cod->channels*cod->bits_per_sample)/8;
1684
                else
1685
                    foundsize=sc->sample_to_chunk[i].count*sc->sample_size;
1686
            }
1687
#ifdef DEBUG
1688
            /*printf("sample_to_chunk first=%ld count=%ld, id=%ld\n", sc->sample_to_chunk[i].first, sc->sample_to_chunk[i].count, sc->sample_to_chunk[i].id);*/
1689
#endif
1690
        }
1691
        if( (foundsize>0) && (foundsize<size) )
1692
        {
1693
#ifdef DEBUG
1694
            /*printf("this size should actually be %d\n",foundsize);*/
1695
#endif
1696
            size=foundsize;
1697
        }
1698
    }
1699
#endif //MOV_MINOLTA_FIX
1700

    
1701
#ifdef MOV_SPLIT_CHUNKS
1702
    /* split chunks into samples */
1703
    if (sc->sample_size == 0) {
1704
        int idx = sc->sample_to_chunk_index;
1705
        if ((idx + 1 < sc->sample_to_chunk_sz)
1706
            && (sc->next_chunk >= sc->sample_to_chunk[idx + 1].first))
1707
           idx++;
1708
        sc->sample_to_chunk_index = idx;
1709
        if (idx >= 0 && sc->sample_to_chunk[idx].count != 1) {
1710
            mov->partial = sc;
1711
            /* we'll have to get those samples before next chunk */
1712
            sc->left_in_chunk = sc->sample_to_chunk[idx].count - 1;
1713
            size = sc->sample_sizes[sc->current_sample];
1714
        }
1715

    
1716
        sc->current_sample++;
1717
    }
1718
#endif
1719

    
1720
readchunk:
1721
//printf("chunk: [%i] %lli -> %lli (%i)\n", st_id, offset, offset + size, size);
1722
    if(size == 0x0FFFFFFF)
1723
        size = mov->mdat_size + mov->mdat_offset - offset;
1724
    if(size < 0)
1725
        return -1;
1726
    if(size == 0)
1727
        return -1;
1728
    url_fseek(&s->pb, offset, SEEK_SET);
1729

    
1730
    //printf("READCHUNK hlen: %d  %d off: %Ld   pos:%Ld\n", size, sc->header_len, offset, url_ftell(&s->pb));
1731
    if (sc->header_len > 0) {
1732
        av_new_packet(pkt, size + sc->header_len);
1733
        memcpy(pkt->data, sc->header_data, sc->header_len);
1734
        get_buffer(&s->pb, pkt->data + sc->header_len, size);
1735
        /* free header */
1736
        av_freep(&sc->header_data);
1737
        sc->header_len = 0;
1738
    } else {
1739
        av_new_packet(pkt, size);
1740
        get_buffer(&s->pb, pkt->data, pkt->size);
1741
    }
1742
    pkt->stream_index = sc->ffindex;
1743
    
1744
    // If the keyframes table exists, mark any samples that are in the table as key frames.
1745
    // If no table exists, treat very sample as a key frame.
1746
    if (sc->keyframes) {        
1747
        a = 0;
1748
        b = sc->keyframe_count - 1;
1749
        
1750
        while (a < b) {
1751
            m = (a + b + 1) >> 1;
1752
            if (sc->keyframes[m] > sc->current_sample) {
1753
                b = m - 1;
1754
            } else {
1755
                a = m;
1756
            }    
1757
        }
1758
        
1759
        if (sc->keyframes[a] == sc->current_sample)
1760
            pkt->flags |= PKT_FLAG_KEY;
1761
    }
1762
    else
1763
        pkt->flags |= PKT_FLAG_KEY;
1764

    
1765
#ifdef DEBUG
1766
/*
1767
    printf("Packet (%d, %d, %ld) ", pkt->stream_index, st_id, pkt->size);
1768
    for(i=0; i<8; i++)
1769
        printf("%02x ", pkt->data[i]);
1770
    for(i=0; i<8; i++)
1771
        printf("%c ", (pkt->data[i]) & 0x7F);
1772
    puts("");
1773
*/
1774
#endif
1775

    
1776
    mov->next_chunk_offset = offset + size;
1777

    
1778
    return 0;
1779
}
1780

    
1781
static int mov_read_close(AVFormatContext *s)
1782
{
1783
    int i;
1784
    MOVContext *mov = (MOVContext *) s->priv_data;
1785
    for(i=0; i<mov->total_streams; i++)
1786
        mov_free_stream_context(mov->streams[i]);
1787
    /* free color tabs */
1788
    for(i=0; i<mov->ctab_size; i++)
1789
        av_freep(&mov->ctab[i]);
1790
    av_freep(&mov->ctab);
1791
    return 0;
1792
}
1793

    
1794
static AVInputFormat mov_iformat = {
1795
    "mov,mp4,m4a,3gp",
1796
    "QuickTime/MPEG4 format",
1797
    sizeof(MOVContext),
1798
    mov_probe,
1799
    mov_read_header,
1800
    mov_read_packet,
1801
    mov_read_close,
1802
};
1803

    
1804
int mov_init(void)
1805
{
1806
    av_register_input_format(&mov_iformat);
1807
    return 0;
1808
}