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ffmpeg / libavformat / mov.c @ f0a9978c

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

    
22
#include <limits.h>
23

    
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//#define DEBUG
25

    
26
#include "avformat.h"
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#include "riff.h"
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#include "isom.h"
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#include "dv.h"
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#ifdef CONFIG_ZLIB
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#include <zlib.h>
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#endif
34

    
35
/*
36
 * First version by Francois Revol revol@free.fr
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 * Seek function by Gael Chardon gael.dev@4now.net
38
 *
39
 * Features and limitations:
40
 * - reads most of the QT files I have (at least the structure),
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 *   Sample QuickTime files with mp3 audio can be found at: http://www.3ivx.com/showcase.html
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 * - the code is quite ugly... maybe I won't do it recursive next time :-)
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 *
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 * Funny I didn't know about http://sourceforge.net/projects/qt-ffmpeg/
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 * when coding this :) (it's a writer anyway)
46
 *
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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 :))
53
 */
54

    
55
#include "qtpalette.h"
56

    
57

    
58
#undef NDEBUG
59
#include <assert.h>
60

    
61
/* the QuickTime file format is quite convoluted...
62
 * it has lots of index tables, each indexing something in another one...
63
 * Here we just use what is needed to read the chunks
64
 */
65

    
66
typedef struct {
67
    int first;
68
    int count;
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    int id;
70
} MOV_stsc_t;
71

    
72
typedef struct {
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    uint32_t type;
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    int64_t offset;
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    int64_t size; /* total size (excluding the size and type fields) */
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} MOV_atom_t;
77

    
78
typedef struct {
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    offset_t offset;
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    int64_t size;
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} MOV_mdat_t;
82

    
83
struct MOVParseTableEntry;
84

    
85
typedef struct MOVStreamContext {
86
    int ffindex; /* the ffmpeg stream id */
87
    int next_chunk;
88
    unsigned int chunk_count;
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    int64_t *chunk_offsets;
90
    unsigned int stts_count;
91
    MOV_stts_t *stts_data;
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    unsigned int ctts_count;
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    MOV_stts_t *ctts_data;
94
    unsigned int edit_count; /* number of 'edit' (elst atom) */
95
    unsigned int sample_to_chunk_sz;
96
    MOV_stsc_t *sample_to_chunk;
97
    int sample_to_ctime_index;
98
    int sample_to_ctime_sample;
99
    unsigned int sample_size;
100
    unsigned int sample_count;
101
    int *sample_sizes;
102
    unsigned int keyframe_count;
103
    int *keyframes;
104
    int time_scale;
105
    int time_rate;
106
    int current_sample;
107
    unsigned int bytes_per_frame;
108
    unsigned int samples_per_frame;
109
    int dv_audio_container;
110
} MOVStreamContext;
111

    
112
typedef struct MOVContext {
113
    AVFormatContext *fc;
114
    int time_scale;
115
    int64_t duration; /* duration of the longest track */
116
    int found_moov; /* when both 'moov' and 'mdat' sections has been found */
117
    int found_mdat; /* we suppose we have enough data to read the file */
118
    int64_t mdat_offset;
119
    int total_streams;
120
    MOVStreamContext *streams[MAX_STREAMS];
121

    
122
    const struct MOVParseTableEntry *parse_table; /* could be eventually used to change the table */
123
    /* NOTE: for recursion save to/ restore from local variable! */
124

    
125
    AVPaletteControl palette_control;
126
    MOV_mdat_t *mdat_list;
127
    int mdat_count;
128
    DVDemuxContext *dv_demux;
129
    AVFormatContext *dv_fctx;
130
    int isom; /* 1 if file is ISO Media (mp4/3gp) */
131
} MOVContext;
132

    
133

    
134
/* XXX: it's the first time I make a recursive parser I think... sorry if it's ugly :P */
135

    
136
/* those functions parse an atom */
137
/* return code:
138
 1: found what I wanted, exit
139
 0: continue to parse next atom
140
 -1: error occured, exit
141
 */
142
typedef int (*mov_parse_function)(MOVContext *ctx, ByteIOContext *pb, MOV_atom_t atom);
143

    
144
/* links atom IDs to parse functions */
145
typedef struct MOVParseTableEntry {
146
    uint32_t type;
147
    mov_parse_function func;
148
} MOVParseTableEntry;
149

    
150
static int mov_read_default(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
151
{
152
    int64_t total_size = 0;
153
    MOV_atom_t a;
154
    int i;
155
    int err = 0;
156

    
157
    a.offset = atom.offset;
158

    
159
    if (atom.size < 0)
160
        atom.size = INT64_MAX;
161
    while(((total_size + 8) < atom.size) && !url_feof(pb) && !err) {
162
        a.size = atom.size;
163
        a.type=0L;
164
        if(atom.size >= 8) {
165
            a.size = get_be32(pb);
166
            a.type = get_le32(pb);
167
        }
168
        total_size += 8;
169
        a.offset += 8;
170
        dprintf(c->fc, "type: %08x  %.4s  sz: %"PRIx64"  %"PRIx64"   %"PRIx64"\n", a.type, (char*)&a.type, a.size, atom.size, total_size);
171
        if (a.size == 1) { /* 64 bit extended size */
172
            a.size = get_be64(pb) - 8;
173
            a.offset += 8;
174
            total_size += 8;
175
        }
176
        if (a.size == 0) {
177
            a.size = atom.size - total_size;
178
            if (a.size <= 8)
179
                break;
180
        }
181
        a.size -= 8;
182
        if(a.size < 0 || a.size > atom.size - total_size)
183
            break;
184

    
185
        for (i = 0; c->parse_table[i].type != 0L
186
             && c->parse_table[i].type != a.type; i++)
187
            /* empty */;
188

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

    
200
        a.offset += a.size;
201
        total_size += a.size;
202
    }
203

    
204
    if (!err && total_size < atom.size && atom.size < 0x7ffff) {
205
        url_fskip(pb, atom.size - total_size);
206
    }
207

    
208
    return err;
209
}
210

    
211
static int mov_read_hdlr(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
212
{
213
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
214
    uint32_t type;
215
    uint32_t ctype;
216

    
217
    get_byte(pb); /* version */
218
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
219

    
220
    /* component type */
221
    ctype = get_le32(pb);
222
    type = get_le32(pb); /* component subtype */
223

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

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

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

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

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

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

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

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

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

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

    
315
/* this atom contains actual media data */
316
static int mov_read_mdat(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
317
{
318
    if(atom.size == 0) /* wrong one (MP4) */
319
        return 0;
320
    c->mdat_list = av_realloc(c->mdat_list, (c->mdat_count + 1) * sizeof(*c->mdat_list));
321
    c->mdat_list[c->mdat_count].offset = atom.offset;
322
    c->mdat_list[c->mdat_count].size = atom.size;
323
    c->mdat_count++;
324
    c->found_mdat=1;
325
    c->mdat_offset = atom.offset;
326
    if(c->found_moov)
327
        return 1; /* found both, just go */
328
    url_fskip(pb, atom.size);
329
    return 0; /* now go for moov */
330
}
331

    
332
static int mov_read_ftyp(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
333
{
334
    uint32_t type = get_le32(pb);
335

    
336
    if (type != MKTAG('q','t',' ',' '))
337
        c->isom = 1;
338
    av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
339
    get_be32(pb); /* minor version */
340
    url_fskip(pb, atom.size - 8);
341
    return 0;
342
}
343

    
344
/* this atom should contain all header atoms */
345
static int mov_read_moov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
346
{
347
    int err;
348

    
349
    err = mov_read_default(c, pb, atom);
350
    /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
351
    /* so we don't parse the whole file if over a network */
352
    c->found_moov=1;
353
    if(c->found_mdat)
354
        return 1; /* found both, just go */
355
    return 0; /* now go for mdat */
356
}
357

    
358

    
359
static int mov_read_mdhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
360
{
361
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
362
    MOVStreamContext *sc = st->priv_data;
363
    int version = get_byte(pb);
364
    int lang;
365

    
366
    if (version > 1)
367
        return 1; /* unsupported */
368

    
369
    get_byte(pb); get_byte(pb);
370
    get_byte(pb); /* flags */
371

    
372
    if (version == 1) {
373
        get_be64(pb);
374
        get_be64(pb);
375
    } else {
376
        get_be32(pb); /* creation time */
377
        get_be32(pb); /* modification time */
378
    }
379

    
380
    sc->time_scale = get_be32(pb);
381
    st->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
382

    
383
    lang = get_be16(pb); /* language */
384
    ff_mov_lang_to_iso639(lang, st->language);
385
    get_be16(pb); /* quality */
386

    
387
    return 0;
388
}
389

    
390
static int mov_read_mvhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
391
{
392
    int version = get_byte(pb); /* version */
393
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
394

    
395
    if (version == 1) {
396
        get_be64(pb);
397
        get_be64(pb);
398
    } else {
399
        get_be32(pb); /* creation time */
400
        get_be32(pb); /* modification time */
401
    }
402
    c->time_scale = get_be32(pb); /* time scale */
403

    
404
    dprintf(c->fc, "time scale = %i\n", c->time_scale);
405

    
406
    c->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
407
    get_be32(pb); /* preferred scale */
408

    
409
    get_be16(pb); /* preferred volume */
410

    
411
    url_fskip(pb, 10); /* reserved */
412

    
413
    url_fskip(pb, 36); /* display matrix */
414

    
415
    get_be32(pb); /* preview time */
416
    get_be32(pb); /* preview duration */
417
    get_be32(pb); /* poster time */
418
    get_be32(pb); /* selection time */
419
    get_be32(pb); /* selection duration */
420
    get_be32(pb); /* current time */
421
    get_be32(pb); /* next track ID */
422

    
423
    return 0;
424
}
425

    
426
static int mov_read_smi(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
427
{
428
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
429

    
430
    if((uint64_t)atom.size > (1<<30))
431
        return -1;
432

    
433
    // currently SVQ3 decoder expect full STSD header - so let's fake it
434
    // this should be fixed and just SMI header should be passed
435
    av_free(st->codec->extradata);
436
    st->codec->extradata_size = 0x5a + atom.size;
437
    st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
438

    
439
    if (st->codec->extradata) {
440
        memcpy(st->codec->extradata, "SVQ3", 4); // fake
441
        get_buffer(pb, st->codec->extradata + 0x5a, atom.size);
442
        dprintf(c->fc, "Reading SMI %"PRId64"  %s\n", atom.size, st->codec->extradata + 0x5a);
443
    } else
444
        url_fskip(pb, atom.size);
445

    
446
    return 0;
447
}
448

    
449
static int mov_read_enda(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
450
{
451
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
452
    int little_endian = get_be16(pb);
453

    
454
    if (little_endian) {
455
        switch (st->codec->codec_id) {
456
        case CODEC_ID_PCM_S24BE:
457
            st->codec->codec_id = CODEC_ID_PCM_S24LE;
458
            break;
459
        case CODEC_ID_PCM_S32BE:
460
            st->codec->codec_id = CODEC_ID_PCM_S32LE;
461
            break;
462
        default:
463
            break;
464
        }
465
    }
466
    return 0;
467
}
468

    
469
/* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
470
static int mov_read_extradata(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
471
{
472
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
473
    if((uint64_t)atom.size > (1<<30))
474
        return -1;
475
    av_free(st->codec->extradata);
476
    st->codec->extradata_size = atom.size + 8;
477
    st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
478
    if (st->codec->extradata) {
479
        AV_WL32(st->codec->extradata + 4, atom.type);
480
        get_buffer(pb, st->codec->extradata + 8, atom.size);
481
    } else
482
        url_fskip(pb, atom.size);
483
    return 0;
484
}
485

    
486
static int mov_read_wave(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
487
{
488
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
489

    
490
    if((uint64_t)atom.size > (1<<30))
491
        return -1;
492

    
493
    if (st->codec->codec_id == CODEC_ID_QDM2) {
494
        // pass all frma atom to codec, needed at least for QDM2
495
        av_free(st->codec->extradata);
496
        st->codec->extradata_size = atom.size;
497
        st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
498

    
499
        if (st->codec->extradata) {
500
            get_buffer(pb, st->codec->extradata, atom.size);
501
        } else
502
            url_fskip(pb, atom.size);
503
    } else if (atom.size > 8) { /* to read frma, esds atoms */
504
        mov_read_default(c, pb, atom);
505
    } else
506
        url_fskip(pb, atom.size);
507
    return 0;
508
}
509

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

    
514
    if((uint64_t)atom.size > (1<<30))
515
        return -1;
516

    
517
    av_free(st->codec->extradata);
518

    
519
    st->codec->extradata_size = atom.size;
520
    st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
521

    
522
    if (st->codec->extradata) {
523
        get_buffer(pb, st->codec->extradata, atom.size);
524
    } else
525
        url_fskip(pb, atom.size);
526

    
527
    return 0;
528
}
529

    
530
static int mov_read_stco(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
531
{
532
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
533
    MOVStreamContext *sc = st->priv_data;
534
    unsigned int i, entries;
535

    
536
    get_byte(pb); /* version */
537
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
538

    
539
    entries = get_be32(pb);
540

    
541
    if(entries >= UINT_MAX/sizeof(int64_t))
542
        return -1;
543

    
544
    sc->chunk_count = entries;
545
    sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
546
    if (!sc->chunk_offsets)
547
        return -1;
548
    if (atom.type == MKTAG('s', 't', 'c', 'o')) {
549
        for(i=0; i<entries; i++) {
550
            sc->chunk_offsets[i] = get_be32(pb);
551
        }
552
    } else if (atom.type == MKTAG('c', 'o', '6', '4')) {
553
        for(i=0; i<entries; i++) {
554
            sc->chunk_offsets[i] = get_be64(pb);
555
        }
556
    } else
557
        return -1;
558

    
559
    return 0;
560
}
561

    
562
static int mov_read_stsd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
563
{
564
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
565
    MOVStreamContext *sc = st->priv_data;
566
    int entries, frames_per_sample;
567
    uint32_t format;
568
    uint8_t codec_name[32];
569

    
570
    /* for palette traversal */
571
    int color_depth;
572
    int color_start;
573
    int color_count;
574
    int color_end;
575
    int color_index;
576
    int color_dec;
577
    int color_greyscale;
578
    unsigned char *color_table;
579
    int j;
580
    unsigned char r, g, b;
581

    
582
    get_byte(pb); /* version */
583
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
584

    
585
    entries = get_be32(pb);
586

    
587
    while(entries--) { //Parsing Sample description table
588
        enum CodecID id;
589
        MOV_atom_t a = { 0, 0, 0 };
590
        offset_t start_pos = url_ftell(pb);
591
        int size = get_be32(pb); /* size */
592
        format = get_le32(pb); /* data format */
593

    
594
        get_be32(pb); /* reserved */
595
        get_be16(pb); /* reserved */
596
        get_be16(pb); /* index */
597

    
598
        if (st->codec->codec_tag) {
599
            /* multiple fourcc, just skip for now */
600
            url_fskip(pb, size - (url_ftell(pb) - start_pos));
601
            continue;
602
        }
603

    
604
        st->codec->codec_tag = format;
605
        id = codec_get_id(codec_movaudio_tags, format);
606
        if (id<=0 && (format&0xFFFF) == 'm' + ('s'<<8))
607
            id = codec_get_id(codec_wav_tags, bswap_32(format)&0xFFFF);
608

    
609
        if (st->codec->codec_type != CODEC_TYPE_VIDEO && id > 0) {
610
            st->codec->codec_type = CODEC_TYPE_AUDIO;
611
        } else if (st->codec->codec_type != CODEC_TYPE_AUDIO && /* do not overwrite codec type */
612
                   format && format != MKTAG('m', 'p', '4', 's')) { /* skip old asf mpeg4 tag */
613
            id = codec_get_id(codec_movvideo_tags, format);
614
            if (id <= 0)
615
                id = codec_get_id(codec_bmp_tags, format);
616
            if (id > 0)
617
                st->codec->codec_type = CODEC_TYPE_VIDEO;
618
        }
619

    
620
        dprintf(c->fc, "size=%d 4CC= %c%c%c%c codec_type=%d\n",
621
                size,
622
                (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff, (format >> 24) & 0xff,
623
                st->codec->codec_type);
624

    
625
        if(st->codec->codec_type==CODEC_TYPE_VIDEO) {
626
            st->codec->codec_id = id;
627
            get_be16(pb); /* version */
628
            get_be16(pb); /* revision level */
629
            get_be32(pb); /* vendor */
630
            get_be32(pb); /* temporal quality */
631
            get_be32(pb); /* spacial quality */
632

    
633
            st->codec->width = get_be16(pb); /* width */
634
            st->codec->height = get_be16(pb); /* height */
635

    
636
            get_be32(pb); /* horiz resolution */
637
            get_be32(pb); /* vert resolution */
638
            get_be32(pb); /* data size, always 0 */
639
            frames_per_sample = get_be16(pb); /* frames per samples */
640

    
641
            dprintf(c->fc, "frames/samples = %d\n", frames_per_sample);
642

    
643
            get_buffer(pb, codec_name, 32); /* codec name, pascal string (FIXME: true for mp4?) */
644
            if (codec_name[0] <= 31) {
645
                memcpy(st->codec->codec_name, &codec_name[1],codec_name[0]);
646
                st->codec->codec_name[codec_name[0]] = 0;
647
            }
648

    
649
            st->codec->bits_per_sample = get_be16(pb); /* depth */
650
            st->codec->color_table_id = get_be16(pb); /* colortable id */
651

    
652
            /* figure out the palette situation */
653
            color_depth = st->codec->bits_per_sample & 0x1F;
654
            color_greyscale = st->codec->bits_per_sample & 0x20;
655

    
656
            /* if the depth is 2, 4, or 8 bpp, file is palettized */
657
            if ((color_depth == 2) || (color_depth == 4) ||
658
                (color_depth == 8)) {
659

    
660
                if (color_greyscale) {
661

    
662
                    /* compute the greyscale palette */
663
                    color_count = 1 << color_depth;
664
                    color_index = 255;
665
                    color_dec = 256 / (color_count - 1);
666
                    for (j = 0; j < color_count; j++) {
667
                        r = g = b = color_index;
668
                        c->palette_control.palette[j] =
669
                            (r << 16) | (g << 8) | (b);
670
                        color_index -= color_dec;
671
                        if (color_index < 0)
672
                            color_index = 0;
673
                    }
674

    
675
                } else if (st->codec->color_table_id & 0x08) {
676

    
677
                    /* if flag bit 3 is set, use the default palette */
678
                    color_count = 1 << color_depth;
679
                    if (color_depth == 2)
680
                        color_table = ff_qt_default_palette_4;
681
                    else if (color_depth == 4)
682
                        color_table = ff_qt_default_palette_16;
683
                    else
684
                        color_table = ff_qt_default_palette_256;
685

    
686
                    for (j = 0; j < color_count; j++) {
687
                        r = color_table[j * 4 + 0];
688
                        g = color_table[j * 4 + 1];
689
                        b = color_table[j * 4 + 2];
690
                        c->palette_control.palette[j] =
691
                            (r << 16) | (g << 8) | (b);
692
                    }
693

    
694
                } else {
695

    
696
                    /* load the palette from the file */
697
                    color_start = get_be32(pb);
698
                    color_count = get_be16(pb);
699
                    color_end = get_be16(pb);
700
                    for (j = color_start; j <= color_end; j++) {
701
                        /* each R, G, or B component is 16 bits;
702
                         * only use the top 8 bits; skip alpha bytes
703
                         * up front */
704
                        get_byte(pb);
705
                        get_byte(pb);
706
                        r = get_byte(pb);
707
                        get_byte(pb);
708
                        g = get_byte(pb);
709
                        get_byte(pb);
710
                        b = get_byte(pb);
711
                        get_byte(pb);
712
                        c->palette_control.palette[j] =
713
                            (r << 16) | (g << 8) | (b);
714
                    }
715
                }
716

    
717
                st->codec->palctrl = &c->palette_control;
718
                st->codec->palctrl->palette_changed = 1;
719
            } else
720
                st->codec->palctrl = NULL;
721
        } else if(st->codec->codec_type==CODEC_TYPE_AUDIO) {
722
            int bits_per_sample;
723
            uint16_t version = get_be16(pb);
724

    
725
            st->codec->codec_id = id;
726
            get_be16(pb); /* revision level */
727
            get_be32(pb); /* vendor */
728

    
729
            st->codec->channels = get_be16(pb);             /* channel count */
730
            dprintf(c->fc, "audio channels %d\n", st->codec->channels);
731
            st->codec->bits_per_sample = get_be16(pb);      /* sample size */
732
            /* do we need to force to 16 for AMR ? */
733

    
734
            /* handle specific s8 codec */
735
            get_be16(pb); /* compression id = 0*/
736
            get_be16(pb); /* packet size = 0 */
737

    
738
            st->codec->sample_rate = ((get_be32(pb) >> 16));
739

    
740
            switch (st->codec->codec_id) {
741
            case CODEC_ID_PCM_S8:
742
            case CODEC_ID_PCM_U8:
743
                if (st->codec->bits_per_sample == 16)
744
                    st->codec->codec_id = CODEC_ID_PCM_S16BE;
745
                break;
746
            case CODEC_ID_PCM_S16LE:
747
            case CODEC_ID_PCM_S16BE:
748
                if (st->codec->bits_per_sample == 8)
749
                    st->codec->codec_id = CODEC_ID_PCM_S8;
750
                else if (st->codec->bits_per_sample == 24)
751
                    st->codec->codec_id = CODEC_ID_PCM_S24BE;
752
                break;
753
            default:
754
                break;
755
            }
756

    
757
            //Read QT version 1 fields. In version 0 these do not exist.
758
            dprintf(c->fc, "version =%d, isom =%d\n",version,c->isom);
759
            if(!c->isom) {
760
                if(version==1) {
761
                    sc->samples_per_frame = get_be32(pb);
762
                    get_be32(pb); /* bytes per packet */
763
                    sc->bytes_per_frame = get_be32(pb);
764
                    get_be32(pb); /* bytes per sample */
765
                } else if(version==2) {
766
                    get_be32(pb); /* sizeof struct only */
767
                    st->codec->sample_rate = av_int2dbl(get_be64(pb)); /* float 64 */
768
                    st->codec->channels = get_be32(pb);
769
                    get_be32(pb); /* always 0x7F000000 */
770
                    get_be32(pb); /* bits per channel if sound is uncompressed */
771
                    get_be32(pb); /* lcpm format specific flag */
772
                    get_be32(pb); /* bytes per audio packet if constant */
773
                    get_be32(pb); /* lpcm frames per audio packet if constant */
774
                }
775
            }
776

    
777
            bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
778
            if (bits_per_sample) {
779
                st->codec->bits_per_sample = bits_per_sample;
780
                sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
781
            }
782
        } else {
783
            /* other codec type, just skip (rtp, mp4s, tmcd ...) */
784
            url_fskip(pb, size - (url_ftell(pb) - start_pos));
785
        }
786
        /* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */
787
        a.size = size - (url_ftell(pb) - start_pos);
788
        if (a.size > 8)
789
            mov_read_default(c, pb, a);
790
        else if (a.size > 0)
791
            url_fskip(pb, a.size);
792
    }
793

    
794
    if(st->codec->codec_type==CODEC_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1) {
795
        st->codec->sample_rate= sc->time_scale;
796
    }
797

    
798
    /* special codec parameters handling */
799
    switch (st->codec->codec_id) {
800
#ifdef CONFIG_H261_DECODER
801
    case CODEC_ID_H261:
802
#endif
803
#ifdef CONFIG_H263_DECODER
804
    case CODEC_ID_H263:
805
#endif
806
#ifdef CONFIG_MPEG4_DECODER
807
    case CODEC_ID_MPEG4:
808
#endif
809
        st->codec->width= 0; /* let decoder init width/height */
810
        st->codec->height= 0;
811
        break;
812
#ifdef CONFIG_LIBFAAD
813
    case CODEC_ID_AAC:
814
#endif
815
#ifdef CONFIG_VORBIS_DECODER
816
    case CODEC_ID_VORBIS:
817
#endif
818
    case CODEC_ID_MP3ON4:
819
        st->codec->sample_rate= 0; /* let decoder init parameters properly */
820
        break;
821
#ifdef CONFIG_DV_DEMUXER
822
    case CODEC_ID_DVAUDIO:
823
        c->dv_fctx = av_alloc_format_context();
824
        c->dv_demux = dv_init_demux(c->dv_fctx);
825
        if (!c->dv_demux) {
826
            av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
827
            return -1;
828
        }
829
        sc->dv_audio_container = 1;
830
        st->codec->codec_id = CODEC_ID_PCM_S16LE;
831
        break;
832
#endif
833
    /* no ifdef since parameters are always those */
834
    case CODEC_ID_AMR_WB:
835
        st->codec->sample_rate= 16000;
836
        st->codec->channels= 1; /* really needed */
837
        break;
838
    case CODEC_ID_AMR_NB:
839
        st->codec->sample_rate= 8000;
840
        st->codec->channels= 1; /* really needed */
841
        break;
842
    case CODEC_ID_MP2:
843
    case CODEC_ID_MP3:
844
        st->codec->codec_type = CODEC_TYPE_AUDIO; /* force type after stsd for m1a hdlr */
845
        st->need_parsing = AVSTREAM_PARSE_FULL;
846
        break;
847
    case CODEC_ID_ADPCM_MS:
848
    case CODEC_ID_ADPCM_IMA_WAV:
849
        st->codec->block_align = sc->bytes_per_frame;
850
        break;
851
    default:
852
        break;
853
    }
854

    
855
    return 0;
856
}
857

    
858
static int mov_read_stsc(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
859
{
860
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
861
    MOVStreamContext *sc = st->priv_data;
862
    unsigned int i, entries;
863

    
864
    get_byte(pb); /* version */
865
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
866

    
867
    entries = get_be32(pb);
868

    
869
    if(entries >= UINT_MAX / sizeof(MOV_stsc_t))
870
        return -1;
871

    
872
    dprintf(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
873

    
874
    sc->sample_to_chunk_sz = entries;
875
    sc->sample_to_chunk = av_malloc(entries * sizeof(MOV_stsc_t));
876
    if (!sc->sample_to_chunk)
877
        return -1;
878
    for(i=0; i<entries; i++) {
879
        sc->sample_to_chunk[i].first = get_be32(pb);
880
        sc->sample_to_chunk[i].count = get_be32(pb);
881
        sc->sample_to_chunk[i].id = get_be32(pb);
882
    }
883
    return 0;
884
}
885

    
886
static int mov_read_stss(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
887
{
888
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
889
    MOVStreamContext *sc = st->priv_data;
890
    unsigned int i, entries;
891

    
892
    get_byte(pb); /* version */
893
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
894

    
895
    entries = get_be32(pb);
896

    
897
    if(entries >= UINT_MAX / sizeof(int))
898
        return -1;
899

    
900
    sc->keyframe_count = entries;
901

    
902
    dprintf(c->fc, "keyframe_count = %d\n", sc->keyframe_count);
903

    
904
    sc->keyframes = av_malloc(entries * sizeof(int));
905
    if (!sc->keyframes)
906
        return -1;
907
    for(i=0; i<entries; i++) {
908
        sc->keyframes[i] = get_be32(pb);
909
        //dprintf(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
910
    }
911
    return 0;
912
}
913

    
914
static int mov_read_stsz(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
915
{
916
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
917
    MOVStreamContext *sc = st->priv_data;
918
    unsigned int i, entries, sample_size;
919

    
920
    get_byte(pb); /* version */
921
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
922

    
923
    sample_size = get_be32(pb);
924
    if (!sc->sample_size) /* do not overwrite value computed in stsd */
925
        sc->sample_size = sample_size;
926
    entries = get_be32(pb);
927
    if(entries >= UINT_MAX / sizeof(int))
928
        return -1;
929

    
930
    sc->sample_count = entries;
931
    if (sample_size)
932
        return 0;
933

    
934
    dprintf(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, sc->sample_count);
935

    
936
    sc->sample_sizes = av_malloc(entries * sizeof(int));
937
    if (!sc->sample_sizes)
938
        return -1;
939
    for(i=0; i<entries; i++) {
940
        sc->sample_sizes[i] = get_be32(pb);
941
        dprintf(c->fc, "sample_sizes[]=%d\n", sc->sample_sizes[i]);
942
    }
943
    return 0;
944
}
945

    
946
static int mov_read_stts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
947
{
948
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
949
    MOVStreamContext *sc = st->priv_data;
950
    unsigned int i, entries;
951
    int64_t duration=0;
952
    int64_t total_sample_count=0;
953

    
954
    get_byte(pb); /* version */
955
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
956
    entries = get_be32(pb);
957
    if(entries >= UINT_MAX / sizeof(MOV_stts_t))
958
        return -1;
959

    
960
    sc->stts_count = entries;
961
    sc->stts_data = av_malloc(entries * sizeof(MOV_stts_t));
962

    
963
    dprintf(c->fc, "track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries);
964

    
965
    sc->time_rate=0;
966

    
967
    for(i=0; i<entries; i++) {
968
        int sample_duration;
969
        int sample_count;
970

    
971
        sample_count=get_be32(pb);
972
        sample_duration = get_be32(pb);
973
        sc->stts_data[i].count= sample_count;
974
        sc->stts_data[i].duration= sample_duration;
975

    
976
        sc->time_rate= ff_gcd(sc->time_rate, sample_duration);
977

    
978
        dprintf(c->fc, "sample_count=%d, sample_duration=%d\n",sample_count,sample_duration);
979

    
980
        duration+=(int64_t)sample_duration*sample_count;
981
        total_sample_count+=sample_count;
982
    }
983

    
984
    st->nb_frames= total_sample_count;
985
    if(duration)
986
        st->duration= duration;
987
    return 0;
988
}
989

    
990
static int mov_read_ctts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
991
{
992
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
993
    MOVStreamContext *sc = st->priv_data;
994
    unsigned int i, entries;
995

    
996
    get_byte(pb); /* version */
997
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
998
    entries = get_be32(pb);
999
    if(entries >= UINT_MAX / sizeof(MOV_stts_t))
1000
        return -1;
1001

    
1002
    sc->ctts_count = entries;
1003
    sc->ctts_data = av_malloc(entries * sizeof(MOV_stts_t));
1004

    
1005
    dprintf(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
1006

    
1007
    for(i=0; i<entries; i++) {
1008
        int count    =get_be32(pb);
1009
        int duration =get_be32(pb);
1010

    
1011
        if (duration < 0) {
1012
            av_log(c->fc, AV_LOG_ERROR, "negative ctts, ignoring\n");
1013
            sc->ctts_count = 0;
1014
            url_fskip(pb, 8 * (entries - i - 1));
1015
            break;
1016
        }
1017
        sc->ctts_data[i].count   = count;
1018
        sc->ctts_data[i].duration= duration;
1019

    
1020
        sc->time_rate= ff_gcd(sc->time_rate, duration);
1021
    }
1022
    return 0;
1023
}
1024

    
1025
static int mov_read_trak(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1026
{
1027
    AVStream *st;
1028
    MOVStreamContext *sc;
1029

    
1030
    st = av_new_stream(c->fc, c->fc->nb_streams);
1031
    if (!st) return -2;
1032
    sc = av_mallocz(sizeof(MOVStreamContext));
1033
    if (!sc) {
1034
        av_free(st);
1035
        return -1;
1036
    }
1037

    
1038
    st->priv_data = sc;
1039
    st->codec->codec_type = CODEC_TYPE_DATA;
1040
    st->start_time = 0; /* XXX: check */
1041
    c->streams[c->fc->nb_streams-1] = sc;
1042

    
1043
    return mov_read_default(c, pb, atom);
1044
}
1045

    
1046
static void mov_parse_udta_string(ByteIOContext *pb, char *str, int size)
1047
{
1048
    uint16_t str_size = get_be16(pb); /* string length */;
1049

    
1050
    get_be16(pb); /* skip language */
1051
    get_buffer(pb, str, FFMIN(size, str_size));
1052
}
1053

    
1054
static int mov_read_udta(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1055
{
1056
    uint64_t end = url_ftell(pb) + atom.size;
1057

    
1058
    while (url_ftell(pb) + 8 < end) {
1059
        uint32_t tag_size = get_be32(pb);
1060
        uint32_t tag      = get_le32(pb);
1061
        uint64_t next     = url_ftell(pb) + tag_size - 8;
1062

    
1063
        switch (tag) {
1064
        case MKTAG(0xa9,'n','a','m'):
1065
            mov_parse_udta_string(pb, c->fc->title,     sizeof(c->fc->title));
1066
            break;
1067
        case MKTAG(0xa9,'w','r','t'):
1068
            mov_parse_udta_string(pb, c->fc->author,    sizeof(c->fc->author));
1069
            break;
1070
        case MKTAG(0xa9,'c','p','y'):
1071
            mov_parse_udta_string(pb, c->fc->copyright, sizeof(c->fc->copyright));
1072
            break;
1073
        case MKTAG(0xa9,'i','n','f'):
1074
            mov_parse_udta_string(pb, c->fc->comment,   sizeof(c->fc->comment));
1075
            break;
1076
        default:
1077
            break;
1078
        }
1079

    
1080
        url_fseek(pb, next, SEEK_SET);
1081
    }
1082

    
1083
    return 0;
1084
}
1085

    
1086
static int mov_read_tkhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1087
{
1088
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1089
    int version = get_byte(pb);
1090

    
1091
    get_byte(pb); get_byte(pb);
1092
    get_byte(pb); /* flags */
1093
    /*
1094
    MOV_TRACK_ENABLED 0x0001
1095
    MOV_TRACK_IN_MOVIE 0x0002
1096
    MOV_TRACK_IN_PREVIEW 0x0004
1097
    MOV_TRACK_IN_POSTER 0x0008
1098
    */
1099

    
1100
    if (version == 1) {
1101
        get_be64(pb);
1102
        get_be64(pb);
1103
    } else {
1104
        get_be32(pb); /* creation time */
1105
        get_be32(pb); /* modification time */
1106
    }
1107
    st->id = (int)get_be32(pb); /* track id (NOT 0 !)*/
1108
    get_be32(pb); /* reserved */
1109
    st->start_time = 0; /* check */
1110
    (version == 1) ? get_be64(pb) : get_be32(pb); /* highlevel (considering edits) duration in movie timebase */
1111
    get_be32(pb); /* reserved */
1112
    get_be32(pb); /* reserved */
1113

    
1114
    get_be16(pb); /* layer */
1115
    get_be16(pb); /* alternate group */
1116
    get_be16(pb); /* volume */
1117
    get_be16(pb); /* reserved */
1118

    
1119
    url_fskip(pb, 36); /* display matrix */
1120

    
1121
    /* those are fixed-point */
1122
    get_be32(pb); /* track width */
1123
    get_be32(pb); /* track height */
1124

    
1125
    return 0;
1126
}
1127

    
1128
/* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
1129
/* like the files created with Adobe Premiere 5.0, for samples see */
1130
/* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
1131
static int mov_read_wide(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1132
{
1133
    int err;
1134

    
1135
    if (atom.size < 8)
1136
        return 0; /* continue */
1137
    if (get_be32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
1138
        url_fskip(pb, atom.size - 4);
1139
        return 0;
1140
    }
1141
    atom.type = get_le32(pb);
1142
    atom.offset += 8;
1143
    atom.size -= 8;
1144
    if (atom.type != MKTAG('m', 'd', 'a', 't')) {
1145
        url_fskip(pb, atom.size);
1146
        return 0;
1147
    }
1148
    err = mov_read_mdat(c, pb, atom);
1149
    return err;
1150
}
1151

    
1152
static int mov_read_cmov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1153
{
1154
#ifdef CONFIG_ZLIB
1155
    ByteIOContext ctx;
1156
    uint8_t *cmov_data;
1157
    uint8_t *moov_data; /* uncompressed data */
1158
    long cmov_len, moov_len;
1159
    int ret;
1160

    
1161
    get_be32(pb); /* dcom atom */
1162
    if (get_le32(pb) != MKTAG( 'd', 'c', 'o', 'm' ))
1163
        return -1;
1164
    if (get_le32(pb) != MKTAG( 'z', 'l', 'i', 'b' )) {
1165
        av_log(NULL, AV_LOG_ERROR, "unknown compression for cmov atom !");
1166
        return -1;
1167
    }
1168
    get_be32(pb); /* cmvd atom */
1169
    if (get_le32(pb) != MKTAG( 'c', 'm', 'v', 'd' ))
1170
        return -1;
1171
    moov_len = get_be32(pb); /* uncompressed size */
1172
    cmov_len = atom.size - 6 * 4;
1173

    
1174
    cmov_data = av_malloc(cmov_len);
1175
    if (!cmov_data)
1176
        return -1;
1177
    moov_data = av_malloc(moov_len);
1178
    if (!moov_data) {
1179
        av_free(cmov_data);
1180
        return -1;
1181
    }
1182
    get_buffer(pb, cmov_data, cmov_len);
1183
    if(uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
1184
        return -1;
1185
    if(init_put_byte(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
1186
        return -1;
1187
    atom.type = MKTAG( 'm', 'o', 'o', 'v' );
1188
    atom.offset = 0;
1189
    atom.size = moov_len;
1190
#ifdef DEBUG
1191
//    { int fd = open("/tmp/uncompheader.mov", O_WRONLY | O_CREAT); write(fd, moov_data, moov_len); close(fd); }
1192
#endif
1193
    ret = mov_read_default(c, &ctx, atom);
1194
    av_free(moov_data);
1195
    av_free(cmov_data);
1196
    return ret;
1197
#else
1198
    av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
1199
    return -1;
1200
#endif
1201
}
1202

    
1203
/* edit list atom */
1204
static int mov_read_elst(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1205
{
1206
    int i, edit_count;
1207

    
1208
    get_byte(pb); /* version */
1209
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1210
    edit_count= c->streams[c->fc->nb_streams-1]->edit_count = get_be32(pb);     /* entries */
1211

    
1212
    for(i=0; i<edit_count; i++){
1213
        get_be32(pb); /* Track duration */
1214
        get_be32(pb); /* Media time */
1215
        get_be32(pb); /* Media rate */
1216
    }
1217
    dprintf(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, c->streams[c->fc->nb_streams-1]->edit_count);
1218
    return 0;
1219
}
1220

    
1221
static const MOVParseTableEntry mov_default_parse_table[] = {
1222
/* mp4 atoms */
1223
{ MKTAG( 'c', 'o', '6', '4' ), mov_read_stco },
1224
{ MKTAG( 'c', 't', 't', 's' ), mov_read_ctts }, /* composition time to sample */
1225
{ MKTAG( 'e', 'd', 't', 's' ), mov_read_default },
1226
{ MKTAG( 'e', 'l', 's', 't' ), mov_read_elst },
1227
{ MKTAG( 'e', 'n', 'd', 'a' ), mov_read_enda },
1228
{ MKTAG( 'f', 'i', 'e', 'l' ), mov_read_extradata },
1229
{ MKTAG( 'f', 't', 'y', 'p' ), mov_read_ftyp },
1230
{ MKTAG( 'h', 'd', 'l', 'r' ), mov_read_hdlr },
1231
{ MKTAG( 'j', 'p', '2', 'h' ), mov_read_extradata },
1232
{ MKTAG( 'm', 'd', 'a', 't' ), mov_read_mdat },
1233
{ MKTAG( 'm', 'd', 'h', 'd' ), mov_read_mdhd },
1234
{ MKTAG( 'm', 'd', 'i', 'a' ), mov_read_default },
1235
{ MKTAG( 'm', 'i', 'n', 'f' ), mov_read_default },
1236
{ MKTAG( 'm', 'o', 'o', 'v' ), mov_read_moov },
1237
{ MKTAG( 'm', 'v', 'h', 'd' ), mov_read_mvhd },
1238
{ MKTAG( 'S', 'M', 'I', ' ' ), mov_read_smi }, /* Sorenson extension ??? */
1239
{ MKTAG( 'a', 'l', 'a', 'c' ), mov_read_extradata }, /* alac specific atom */
1240
{ MKTAG( 'a', 'v', 'c', 'C' ), mov_read_avcC },
1241
{ MKTAG( 's', 't', 'b', 'l' ), mov_read_default },
1242
{ MKTAG( 's', 't', 'c', 'o' ), mov_read_stco },
1243
{ MKTAG( 's', 't', 's', 'c' ), mov_read_stsc },
1244
{ MKTAG( 's', 't', 's', 'd' ), mov_read_stsd }, /* sample description */
1245
{ MKTAG( 's', 't', 's', 's' ), mov_read_stss }, /* sync sample */
1246
{ MKTAG( 's', 't', 's', 'z' ), mov_read_stsz }, /* sample size */
1247
{ MKTAG( 's', 't', 't', 's' ), mov_read_stts },
1248
{ MKTAG( 't', 'k', 'h', 'd' ), mov_read_tkhd }, /* track header */
1249
{ MKTAG( 't', 'r', 'a', 'k' ), mov_read_trak },
1250
{ MKTAG( 'u', 'd', 't', 'a' ), mov_read_udta },
1251
{ MKTAG( 'w', 'a', 'v', 'e' ), mov_read_wave },
1252
{ MKTAG( 'e', 's', 'd', 's' ), mov_read_esds },
1253
{ MKTAG( 'w', 'i', 'd', 'e' ), mov_read_wide }, /* place holder */
1254
{ MKTAG( 'c', 'm', 'o', 'v' ), mov_read_cmov },
1255
{ 0L, NULL }
1256
};
1257

    
1258
/* XXX: is it sufficient ? */
1259
static int mov_probe(AVProbeData *p)
1260
{
1261
    unsigned int offset;
1262
    uint32_t tag;
1263
    int score = 0;
1264

    
1265
    /* check file header */
1266
    offset = 0;
1267
    for(;;) {
1268
        /* ignore invalid offset */
1269
        if ((offset + 8) > (unsigned int)p->buf_size)
1270
            return score;
1271
        tag = AV_RL32(p->buf + offset + 4);
1272
        switch(tag) {
1273
        /* check for obvious tags */
1274
        case MKTAG( 'j', 'P', ' ', ' ' ): /* jpeg 2000 signature */
1275
        case MKTAG( 'm', 'o', 'o', 'v' ):
1276
        case MKTAG( 'm', 'd', 'a', 't' ):
1277
        case MKTAG( 'p', 'n', 'o', 't' ): /* detect movs with preview pics like ew.mov and april.mov */
1278
        case MKTAG( 'u', 'd', 't', 'a' ): /* Packet Video PVAuthor adds this and a lot of more junk */
1279
            return AVPROBE_SCORE_MAX;
1280
        /* those are more common words, so rate then a bit less */
1281
        case MKTAG( 'e', 'd', 'i', 'w' ): /* xdcam files have reverted first tags */
1282
        case MKTAG( 'w', 'i', 'd', 'e' ):
1283
        case MKTAG( 'f', 'r', 'e', 'e' ):
1284
        case MKTAG( 'j', 'u', 'n', 'k' ):
1285
        case MKTAG( 'p', 'i', 'c', 't' ):
1286
            return AVPROBE_SCORE_MAX - 5;
1287
        case MKTAG( 'f', 't', 'y', 'p' ):
1288
        case MKTAG( 's', 'k', 'i', 'p' ):
1289
        case MKTAG( 'u', 'u', 'i', 'd' ):
1290
            offset = AV_RB32(p->buf+offset) + offset;
1291
            /* if we only find those cause probedata is too small at least rate them */
1292
            score = AVPROBE_SCORE_MAX - 50;
1293
            break;
1294
        default:
1295
            /* unrecognized tag */
1296
            return score;
1297
        }
1298
    }
1299
    return score;
1300
}
1301

    
1302
static void mov_build_index(MOVContext *mov, AVStream *st)
1303
{
1304
    MOVStreamContext *sc = st->priv_data;
1305
    offset_t current_offset;
1306
    int64_t current_dts = 0;
1307
    unsigned int stts_index = 0;
1308
    unsigned int stsc_index = 0;
1309
    unsigned int stss_index = 0;
1310
    unsigned int i, j, k;
1311

    
1312
    if (sc->sample_sizes || st->codec->codec_type == CODEC_TYPE_VIDEO || sc->dv_audio_container) {
1313
        unsigned int current_sample = 0;
1314
        unsigned int stts_sample = 0;
1315
        unsigned int keyframe, sample_size;
1316
        unsigned int distance = 0;
1317

    
1318
        st->nb_frames = sc->sample_count;
1319
        for (i = 0; i < sc->chunk_count; i++) {
1320
            current_offset = sc->chunk_offsets[i];
1321
            if (stsc_index + 1 < sc->sample_to_chunk_sz && i + 1 == sc->sample_to_chunk[stsc_index + 1].first)
1322
                stsc_index++;
1323
            for (j = 0; j < sc->sample_to_chunk[stsc_index].count; j++) {
1324
                if (current_sample >= sc->sample_count) {
1325
                    av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
1326
                    goto out;
1327
                }
1328
                keyframe = !sc->keyframe_count || current_sample + 1 == sc->keyframes[stss_index];
1329
                if (keyframe) {
1330
                    distance = 0;
1331
                    if (stss_index + 1 < sc->keyframe_count)
1332
                        stss_index++;
1333
                }
1334
                sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
1335
                dprintf(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", size %d, distance %d, keyframe %d\n",
1336
                        st->index, current_sample, current_offset, current_dts, sample_size, distance, keyframe);
1337
                av_add_index_entry(st, current_offset, current_dts, sample_size, distance, keyframe ? AVINDEX_KEYFRAME : 0);
1338
                current_offset += sample_size;
1339
                assert(sc->stts_data[stts_index].duration % sc->time_rate == 0);
1340
                current_dts += sc->stts_data[stts_index].duration / sc->time_rate;
1341
                distance++;
1342
                stts_sample++;
1343
                current_sample++;
1344
                if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
1345
                    stts_sample = 0;
1346
                    stts_index++;
1347
                }
1348
            }
1349
        }
1350
    } else { /* read whole chunk */
1351
        unsigned int chunk_samples, chunk_size, chunk_duration;
1352

    
1353
        for (i = 0; i < sc->chunk_count; i++) {
1354
            current_offset = sc->chunk_offsets[i];
1355
            if (stsc_index + 1 < sc->sample_to_chunk_sz && i + 1 == sc->sample_to_chunk[stsc_index + 1].first)
1356
                stsc_index++;
1357
            chunk_samples = sc->sample_to_chunk[stsc_index].count;
1358
            /* get chunk size */
1359
            if (sc->sample_size > 1 || st->codec->codec_id == CODEC_ID_PCM_U8 || st->codec->codec_id == CODEC_ID_PCM_S8)
1360
                chunk_size = chunk_samples * sc->sample_size;
1361
            else if (sc->samples_per_frame > 0 && (chunk_samples * sc->bytes_per_frame % sc->samples_per_frame == 0))
1362
                chunk_size = chunk_samples * sc->bytes_per_frame / sc->samples_per_frame;
1363
            else { /* workaround to find nearest next chunk offset */
1364
                chunk_size = INT_MAX;
1365
                for (j = 0; j < mov->total_streams; j++) {
1366
                    MOVStreamContext *msc = mov->streams[j];
1367

    
1368
                    for (k = msc->next_chunk; k < msc->chunk_count; k++) {
1369
                        if (msc->chunk_offsets[k] > current_offset && msc->chunk_offsets[k] - current_offset < chunk_size) {
1370
                            chunk_size = msc->chunk_offsets[k] - current_offset;
1371
                            msc->next_chunk = k;
1372
                            break;
1373
                        }
1374
                    }
1375
                }
1376
                /* check for last chunk */
1377
                if (chunk_size == INT_MAX)
1378
                    for (j = 0; j < mov->mdat_count; j++) {
1379
                        dprintf(mov->fc, "mdat %d, offset %"PRIx64", size %"PRId64", current offset %"PRIx64"\n",
1380
                                j, mov->mdat_list[j].offset, mov->mdat_list[j].size, current_offset);
1381
                        if (mov->mdat_list[j].offset <= current_offset && mov->mdat_list[j].offset + mov->mdat_list[j].size > current_offset)
1382
                            chunk_size = mov->mdat_list[j].offset + mov->mdat_list[j].size - current_offset;
1383
                    }
1384
                assert(chunk_size != INT_MAX);
1385
                for (j = 0; j < mov->total_streams; j++) {
1386
                    mov->streams[j]->next_chunk = 0;
1387
                }
1388
            }
1389
            av_add_index_entry(st, current_offset, current_dts, chunk_size, 0, AVINDEX_KEYFRAME);
1390
            /* get chunk duration */
1391
            chunk_duration = 0;
1392
            while (chunk_samples > 0) {
1393
                if (chunk_samples < sc->stts_data[stts_index].count) {
1394
                    chunk_duration += sc->stts_data[stts_index].duration * chunk_samples;
1395
                    sc->stts_data[stts_index].count -= chunk_samples;
1396
                    break;
1397
                } else {
1398
                    chunk_duration += sc->stts_data[stts_index].duration * chunk_samples;
1399
                    chunk_samples -= sc->stts_data[stts_index].count;
1400
                    if (stts_index + 1 < sc->stts_count) {
1401
                        stts_index++;
1402
                    }
1403
                }
1404
            }
1405
            dprintf(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", size %d, duration %d\n",
1406
                    st->index, i, current_offset, current_dts, chunk_size, chunk_duration);
1407
            assert(chunk_duration % sc->time_rate == 0);
1408
            current_dts += chunk_duration / sc->time_rate;
1409
        }
1410
    }
1411
 out:
1412
    /* adjust sample count to avindex entries */
1413
    sc->sample_count = st->nb_index_entries;
1414
}
1415

    
1416
static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
1417
{
1418
    MOVContext *mov = s->priv_data;
1419
    ByteIOContext *pb = &s->pb;
1420
    int i, err;
1421
    MOV_atom_t atom = { 0, 0, 0 };
1422

    
1423
    mov->fc = s;
1424
    mov->parse_table = mov_default_parse_table;
1425

    
1426
    if(!url_is_streamed(pb)) /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
1427
        atom.size = url_fsize(pb);
1428
    else
1429
        atom.size = INT64_MAX;
1430

    
1431
    /* check MOV header */
1432
    err = mov_read_default(mov, pb, atom);
1433
    if (err<0 || (!mov->found_moov && !mov->found_mdat)) {
1434
        av_log(s, AV_LOG_ERROR, "mov: header not found !!! (err:%d, moov:%d, mdat:%d) pos:%"PRId64"\n",
1435
                err, mov->found_moov, mov->found_mdat, url_ftell(pb));
1436
        return -1;
1437
    }
1438
    dprintf(mov->fc, "on_parse_exit_offset=%d\n", (int) url_ftell(pb));
1439

    
1440
    /* some cleanup : make sure we are on the mdat atom */
1441
    if(!url_is_streamed(pb) && (url_ftell(pb) != mov->mdat_offset))
1442
        url_fseek(pb, mov->mdat_offset, SEEK_SET);
1443

    
1444
    mov->total_streams = s->nb_streams;
1445

    
1446
    for(i=0; i<mov->total_streams; i++) {
1447
        MOVStreamContext *sc = mov->streams[i];
1448
        AVStream *st = s->streams[i];
1449
        /* sanity checks */
1450
        if(!sc->stts_count || !sc->chunk_count || !sc->sample_to_chunk_sz ||
1451
           (!sc->sample_size && !sc->sample_count)){
1452
            av_log(s, AV_LOG_ERROR, "missing mandatory atoms, broken header\n");
1453
            sc->sample_count = 0; //ignore track
1454
            continue;
1455
        }
1456
        if(!sc->time_rate)
1457
            sc->time_rate=1;
1458
        if(!sc->time_scale)
1459
            sc->time_scale= mov->time_scale;
1460
        av_set_pts_info(st, 64, sc->time_rate, sc->time_scale);
1461

    
1462
        if (st->codec->codec_type == CODEC_TYPE_AUDIO && sc->stts_count == 1)
1463
            st->codec->frame_size = sc->stts_data[0].duration;
1464

    
1465
        if(st->duration != AV_NOPTS_VALUE){
1466
            assert(st->duration % sc->time_rate == 0);
1467
            st->duration /= sc->time_rate;
1468
        }
1469
        sc->ffindex = i;
1470
        mov_build_index(mov, st);
1471
    }
1472

    
1473
    for(i=0; i<mov->total_streams; i++) {
1474
        /* Do not need those anymore. */
1475
        av_freep(&mov->streams[i]->chunk_offsets);
1476
        av_freep(&mov->streams[i]->sample_to_chunk);
1477
        av_freep(&mov->streams[i]->sample_sizes);
1478
        av_freep(&mov->streams[i]->keyframes);
1479
        av_freep(&mov->streams[i]->stts_data);
1480
    }
1481
    av_freep(&mov->mdat_list);
1482
    return 0;
1483
}
1484

    
1485
static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
1486
{
1487
    MOVContext *mov = s->priv_data;
1488
    MOVStreamContext *sc = 0;
1489
    AVIndexEntry *sample = 0;
1490
    int64_t best_dts = INT64_MAX;
1491
    int i;
1492

    
1493
    for (i = 0; i < mov->total_streams; i++) {
1494
        MOVStreamContext *msc = mov->streams[i];
1495

    
1496
        if (s->streams[i]->discard != AVDISCARD_ALL && msc->current_sample < msc->sample_count) {
1497
            AVIndexEntry *current_sample = &s->streams[i]->index_entries[msc->current_sample];
1498
            int64_t dts = av_rescale(current_sample->timestamp * (int64_t)msc->time_rate, AV_TIME_BASE, msc->time_scale);
1499

    
1500
            dprintf(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
1501
            if (dts < best_dts) {
1502
                sample = current_sample;
1503
                best_dts = dts;
1504
                sc = msc;
1505
            }
1506
        }
1507
    }
1508
    if (!sample)
1509
        return -1;
1510
    /* must be done just before reading, to avoid infinite loop on sample */
1511
    sc->current_sample++;
1512
    if (sample->pos >= url_fsize(&s->pb)) {
1513
        av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n", sc->ffindex, sample->pos);
1514
        return -1;
1515
    }
1516
#ifdef CONFIG_DV_DEMUXER
1517
    if (sc->dv_audio_container) {
1518
        dv_get_packet(mov->dv_demux, pkt);
1519
        dprintf(s, "dv audio pkt size %d\n", pkt->size);
1520
    } else {
1521
#endif
1522
        url_fseek(&s->pb, sample->pos, SEEK_SET);
1523
        av_get_packet(&s->pb, pkt, sample->size);
1524
#ifdef CONFIG_DV_DEMUXER
1525
        if (mov->dv_demux) {
1526
            void *pkt_destruct_func = pkt->destruct;
1527
            dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size);
1528
            pkt->destruct = pkt_destruct_func;
1529
        }
1530
    }
1531
#endif
1532
    pkt->stream_index = sc->ffindex;
1533
    pkt->dts = sample->timestamp;
1534
    if (sc->ctts_data) {
1535
        assert(sc->ctts_data[sc->sample_to_ctime_index].duration % sc->time_rate == 0);
1536
        pkt->pts = pkt->dts + sc->ctts_data[sc->sample_to_ctime_index].duration / sc->time_rate;
1537
        /* update ctts context */
1538
        sc->sample_to_ctime_sample++;
1539
        if (sc->sample_to_ctime_index < sc->ctts_count && sc->ctts_data[sc->sample_to_ctime_index].count == sc->sample_to_ctime_sample) {
1540
            sc->sample_to_ctime_index++;
1541
            sc->sample_to_ctime_sample = 0;
1542
        }
1543
    } else {
1544
        pkt->pts = pkt->dts;
1545
    }
1546
    pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? PKT_FLAG_KEY : 0;
1547
    pkt->pos = sample->pos;
1548
    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);
1549
    return 0;
1550
}
1551

    
1552
static int mov_seek_stream(AVStream *st, int64_t timestamp, int flags)
1553
{
1554
    MOVStreamContext *sc = st->priv_data;
1555
    int sample, time_sample;
1556
    int i;
1557

    
1558
    sample = av_index_search_timestamp(st, timestamp, flags);
1559
    dprintf(st->codec, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
1560
    if (sample < 0) /* not sure what to do */
1561
        return -1;
1562
    sc->current_sample = sample;
1563
    dprintf(st->codec, "stream %d, found sample %d\n", st->index, sc->current_sample);
1564
    /* adjust ctts index */
1565
    if (sc->ctts_data) {
1566
        time_sample = 0;
1567
        for (i = 0; i < sc->ctts_count; i++) {
1568
            int next = time_sample + sc->ctts_data[i].count;
1569
            if (next > sc->current_sample) {
1570
                sc->sample_to_ctime_index = i;
1571
                sc->sample_to_ctime_sample = sc->current_sample - time_sample;
1572
                break;
1573
            }
1574
            time_sample = next;
1575
        }
1576
    }
1577
    return sample;
1578
}
1579

    
1580
static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
1581
{
1582
    AVStream *st;
1583
    int64_t seek_timestamp, timestamp;
1584
    int sample;
1585
    int i;
1586

    
1587
    if (stream_index >= s->nb_streams)
1588
        return -1;
1589

    
1590
    st = s->streams[stream_index];
1591
    sample = mov_seek_stream(st, sample_time, flags);
1592
    if (sample < 0)
1593
        return -1;
1594

    
1595
    /* adjust seek timestamp to found sample timestamp */
1596
    seek_timestamp = st->index_entries[sample].timestamp;
1597

    
1598
    for (i = 0; i < s->nb_streams; i++) {
1599
        st = s->streams[i];
1600
        if (stream_index == i || st->discard == AVDISCARD_ALL)
1601
            continue;
1602

    
1603
        timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
1604
        mov_seek_stream(st, timestamp, flags);
1605
    }
1606
    return 0;
1607
}
1608

    
1609
static int mov_read_close(AVFormatContext *s)
1610
{
1611
    int i;
1612
    MOVContext *mov = s->priv_data;
1613
    for(i=0; i<mov->total_streams; i++) {
1614
        av_freep(&mov->streams[i]->ctts_data);
1615
        av_freep(&mov->streams[i]);
1616
    }
1617
    if(mov->dv_demux){
1618
        for(i=0; i<mov->dv_fctx->nb_streams; i++){
1619
            av_freep(&mov->dv_fctx->streams[i]->codec);
1620
            av_freep(&mov->dv_fctx->streams[i]);
1621
        }
1622
        av_freep(&mov->dv_fctx);
1623
        av_freep(&mov->dv_demux);
1624
    }
1625
    return 0;
1626
}
1627

    
1628
AVInputFormat mov_demuxer = {
1629
    "mov,mp4,m4a,3gp,3g2,mj2",
1630
    "QuickTime/MPEG4/Motion JPEG 2000 format",
1631
    sizeof(MOVContext),
1632
    mov_probe,
1633
    mov_read_header,
1634
    mov_read_packet,
1635
    mov_read_close,
1636
    mov_read_seek,
1637
};