aboutsummaryrefslogtreecommitdiffhomepage
path: root/libmpdemux/demux_asf.c
blob: b0bdffcb9a3e79a065c6c360e267f9942805c933 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
//  ASF file parser for DEMUXER v0.3  by A'rpi/ESP-team

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>

#include "config.h"
#include "mp_msg.h"
#include "help_mp.h"

#include "stream.h"
#include "asf.h"
#include "demuxer.h"

#include "libvo/fastmemcpy.h"

#define ASFMIN(a,b) ((a) > (b) ? (b) : (a))
#define SLICE_MIN_START_CODE    0x00000101
#define SLICE_MAX_START_CODE    0x000001af
#define END_NOT_FOUND -100

/*
 * Load 16/32-bit values in little endian byte order
 * from an unaligned address
 */
#ifdef ARCH_X86
#define	LOAD_LE32(p)	(*(unsigned int*)(p))
#define	LOAD_LE16(p)	(*(unsigned short*)(p))
#define	LOAD_BE32(p)	(((unsigned char*)(p))[3]     | \
 			 ((unsigned char*)(p))[2]<< 8 | \
 			 ((unsigned char*)(p))[1]<<16 | \
 			 ((unsigned char*)(p))[0]<<24 )
#else
#define	LOAD_LE32(p)	(((unsigned char*)(p))[0]     | \
 			 ((unsigned char*)(p))[1]<< 8 | \
 			 ((unsigned char*)(p))[2]<<16 | \
 			 ((unsigned char*)(p))[3]<<24 )
#define	LOAD_LE16(p)	(((unsigned char*)(p))[0]     | \
			 ((unsigned char*)(p))[1]<<8)
#define	LOAD_BE32(p)	(*(unsigned int*)(p))
#endif

// defined at asfheader.c:

extern int asf_check_header(demuxer_t *demuxer);
extern int read_asf_header(demuxer_t *demuxer,struct asf_priv* asf);

// based on asf file-format doc by Eugene [http://divx.euro.ru]

static void asf_descrambling(unsigned char **src,unsigned len, struct asf_priv* asf){
  unsigned char *dst=malloc(len);
  unsigned char *s2=*src;
  unsigned i=0,x,y;
  while(len>=asf->scrambling_h*asf->scrambling_w*asf->scrambling_b+i){
//    mp_msg(MSGT_DEMUX,MSGL_DBG4,"descrambling! (w=%d  b=%d)\n",w,asf_scrambling_b);
	//i+=asf_scrambling_h*asf_scrambling_w;
	for(x=0;x<asf->scrambling_w;x++)
	  for(y=0;y<asf->scrambling_h;y++){
	    memcpy(dst+i,s2+(y*asf->scrambling_w+x)*asf->scrambling_b,asf->scrambling_b);
		i+=asf->scrambling_b;
	  }
	s2+=asf->scrambling_h*asf->scrambling_w*asf->scrambling_b;
  }
  //if(i<len) memcpy(dst+i,src+i,len-i);
  free(*src);
  *src = dst;
}

#ifdef USE_LIBAVCODEC_SO
#include <ffmpeg/avcodec.h>
#elif defined(USE_LIBAVCODEC)
#include "libavcodec/avcodec.h"
#else
#define FF_INPUT_BUFFER_PADDING_SIZE 8
#endif

static const uint8_t *find_start_code(const uint8_t * restrict p, const uint8_t *end, uint32_t * restrict state){
  int i;
  if(p>=end)
    return end;

  for(i=0; i<3; i++){
    uint32_t tmp= *state << 8;
    *state= tmp + *(p++);
    if(tmp == 0x100 || p==end)
      return p;
  }

  while(p<end){
    if     (p[-1] > 1      ) p+= 3;
    else if(p[-2]          ) p+= 2;
    else if(p[-3]|(p[-1]-1)) p++;
    else{
      p++;
      break;
    }
  }

  p= ASFMIN(p, end)-4;
  *state=  LOAD_BE32(p);

  return p+4;
}

static int mpeg1_find_frame_end(demuxer_t *demux, const uint8_t *buf, int buf_size)
{
  int i;
  struct asf_priv* asf = demux->priv;

  i=0;
   if(!asf->asf_frame_start_found){
    for(i=0; i<buf_size; i++){
      i= find_start_code(buf+i, buf+buf_size, &asf->asf_frame_state) - buf - 1;
      if(asf->asf_frame_state >= SLICE_MIN_START_CODE && asf->asf_frame_state <= SLICE_MAX_START_CODE){
        i++;
        asf->asf_frame_start_found=1;
        break;
      }
    }
  }

  if(asf->asf_frame_start_found){
    /* EOF considered as end of frame */
      if (buf_size == 0)
          return 0;
            
    for(; i<buf_size; i++){
      i= find_start_code(buf+i, buf+buf_size, &asf->asf_frame_state) - buf - 1;
      if((asf->asf_frame_state&0xFFFFFF00) == 0x100){
        //if NOT in range 257 - 431
        if(asf->asf_frame_state < SLICE_MIN_START_CODE || asf->asf_frame_state > SLICE_MAX_START_CODE){
          asf->asf_frame_start_found=0;
          asf->asf_frame_state=-1;
          return i-3;
        }
      }
    }
  }
  return END_NOT_FOUND;
}

static void demux_asf_append_to_packet(demux_packet_t* dp,unsigned char *data,int len,int offs)
{
  if(dp->len!=offs && offs!=-1) mp_msg(MSGT_DEMUX,MSGL_V,"warning! fragment.len=%d BUT next fragment offset=%d  \n",dp->len,offs);
  dp->buffer=realloc(dp->buffer,dp->len+len+FF_INPUT_BUFFER_PADDING_SIZE);
  memcpy(dp->buffer+dp->len,data,len);
  memset(dp->buffer+dp->len+len, 0, FF_INPUT_BUFFER_PADDING_SIZE);
  mp_dbg(MSGT_DEMUX,MSGL_DBG4,"data appended! %d+%d\n",dp->len,len);
  dp->len+=len;
}

static int demux_asf_read_packet(demuxer_t *demux,unsigned char *data,int len,int id,int seq,unsigned long time,unsigned short dur,int offs,int keyframe){
  struct asf_priv* asf = demux->priv;
  demux_stream_t *ds=NULL;
  int close_seg=0;
  int frame_end_pos=END_NOT_FOUND;
  
  mp_dbg(MSGT_DEMUX,MSGL_DBG4,"demux_asf.read_packet: id=%d seq=%d len=%d\n",id,seq,len);
  
  if(demux->video->id==-1)
    if(demux->v_streams[id])
        demux->video->id=id;

  if(demux->audio->id==-1)
    if(demux->a_streams[id])
        demux->audio->id=id;

  if(id==demux->audio->id){
      // audio
      ds=demux->audio;
      if(!ds->sh){
        ds->sh=demux->a_streams[id];
        mp_msg(MSGT_DEMUX,MSGL_V,"Auto-selected ASF audio ID = %d\n",ds->id);
      }
  } else 
  if(id==demux->video->id){
      // video
      ds=demux->video;
      if(!ds->sh){
        ds->sh=demux->v_streams[id];
        mp_msg(MSGT_DEMUX,MSGL_V,"Auto-selected ASF video ID = %d\n",ds->id);
      }
  }
  
  if(ds){
    if(ds->asf_packet){
      demux_packet_t* dp=ds->asf_packet;

      if (ds==demux->video && asf->asf_is_dvr_ms) {
        frame_end_pos=mpeg1_find_frame_end(demux, data, len);

        if (frame_end_pos != END_NOT_FOUND) {
          dp->pos=demux->filepos;
          if (frame_end_pos > 0) {
            demux_asf_append_to_packet(dp,data,frame_end_pos,offs);
            data += frame_end_pos;
            len -= frame_end_pos;
          }
          close_seg = 1;
          if (asf->avg_vid_frame_time > 0.0 ) {
            // correct the pts for the packet
            // because dvr-ms files do not contain accurate
            // pts values but we can deduce them using
            // the average frame time
            if (asf->dvr_last_vid_pts > 0.0)
              dp->pts=asf->dvr_last_vid_pts+asf->avg_vid_frame_time;
            asf->dvr_last_vid_pts = dp->pts;
          }
        } else seq = ds->asf_seq;
      } else close_seg = ds->asf_seq!=seq;

      if(close_seg){
        // closed segment, finalize packet:
		if(ds==demux->audio)
		  if(asf->scrambling_h>1 && asf->scrambling_w>1 && asf->scrambling_b>0)
		    asf_descrambling(&ds->asf_packet->buffer,ds->asf_packet->len,asf);
        ds_add_packet(ds,ds->asf_packet);
        ds->asf_packet=NULL;
      } else {
        // append data to it!
        demux_asf_append_to_packet(dp,data,len,offs);
        // we are ready now.
        return 1;
      }
    }
    // create new packet:
    { demux_packet_t* dp;
      if(offs>0){
        mp_msg(MSGT_DEMUX,MSGL_V,"warning!  broken fragment, %d bytes missing  \n",offs);
        return 0;
      }
      dp=new_demux_packet(len);
      memcpy(dp->buffer,data,len);
      dp->pts=time*0.001f;
      dp->flags=keyframe;
//      if(ds==demux->video) printf("ASF time: %8d  dur: %5d  \n",time,dur);
      dp->pos=demux->filepos;
      ds->asf_packet=dp;
      ds->asf_seq=seq;
      // we are ready now.
      return 1;
    }
  }

  return 0;
}

//static int num_elementary_packets100=0;
//static int num_elementary_packets101=0;

// return value:
//     0 = EOF or no stream found
//     1 = successfully read a packet
static int demux_asf_fill_buffer(demuxer_t *demux, demux_stream_t *ds){
  struct asf_priv* asf = demux->priv;

  demux->filepos=stream_tell(demux->stream);
  // Brodcast stream have movi_start==movi_end
  // Better test ?
  if((demux->movi_start < demux->movi_end) && (demux->filepos>=demux->movi_end)){
          demux->stream->eof=1;
          return 0;
  }

    stream_read(demux->stream,asf->packet,asf->packetsize);
    if(demux->stream->eof) return 0; // EOF
    
    {
	    unsigned char* p=asf->packet;
            unsigned char* p_end=asf->packet+asf->packetsize;
            unsigned char flags=p[0];
            unsigned char segtype=p[1];
            unsigned padding;
            unsigned plen;
	    unsigned sequence;
            unsigned long time=0;
            unsigned short duration=0;

            int segs=1;
            unsigned char segsizetype=0x80;
            int seg=-1;
            
            if( mp_msg_test(MSGT_DEMUX,MSGL_DBG2) ){
                int i;
                for(i=0;i<16;i++) printf(" %02X",asf->packet[i]);
                printf("\n");
            }
            
	    // skip ECC data if present by testing bit 7 of flags
	    // 1xxxbbbb -> ecc data present, skip bbbb byte(s)
	    // 0xxxxxxx -> payload parsing info starts
	    if (flags & 0x80)
	    {
		p += (flags & 0x0f)+1;
		flags = p[0];
		segtype = p[1];
	    }
	    
            //if(segtype!=0x5d) printf("Warning! packet[4] != 0x5d  \n");

	    p+=2; // skip flags & segtype

            // Read packet size (plen):
	    switch((flags>>5)&3){
	    case 3: plen=LOAD_LE32(p);p+=4;break;	// dword
	    case 2: plen=LOAD_LE16(p);p+=2;break;	// word
	    case 1: plen=p[0];p++;break;		// byte
	    default: plen=0;
		//plen==0 is handled later
		//mp_msg(MSGT_DEMUX,MSGL_V,"Invalid plen type! assuming plen=0\n");
	    }

            // Read sequence:
	    switch((flags>>1)&3){
	    case 3: sequence=LOAD_LE32(p);p+=4;break;	// dword
	    case 2: sequence=LOAD_LE16(p);p+=2;break;	// word
	    case 1: sequence=p[0];p++;break;		// byte
	    default: sequence=0;
	    }

            // Read padding size (padding):
	    switch((flags>>3)&3){
	    case 3: padding=LOAD_LE32(p);p+=4;break;	// dword
	    case 2: padding=LOAD_LE16(p);p+=2;break;	// word
	    case 1: padding=p[0];p++;break;		// byte
	    default: padding=0;
	    }
	    
	    if(((flags>>5)&3)!=0){
              // Explicit (absoulte) packet size
              mp_dbg(MSGT_DEMUX,MSGL_DBG2,"Explicit packet size specified: %d  \n",plen);
              if(plen>asf->packetsize) mp_msg(MSGT_DEMUX,MSGL_V,"Warning! plen>packetsize! (%d>%d)  \n",plen,asf->packetsize);
	    } else {
              // Padding (relative) size
              plen=asf->packetsize-padding;
	    }

	    // Read time & duration:
	    time = LOAD_LE32(p); p+=4;
	    duration = LOAD_LE16(p); p+=2;

	    // Read payload flags:
            if(flags&1){
	      // multiple sub-packets
              segsizetype=p[0]>>6;
              segs=p[0] & 0x3F;
              ++p;
            }
            mp_dbg(MSGT_DEMUX,MSGL_DBG4,"%08"PRIu64":  flag=%02X  segs=%d  seq=%u  plen=%u  pad=%u  time=%ld  dur=%d\n",
              (uint64_t)demux->filepos,flags,segs,sequence,plen,padding,time,duration);

            for(seg=0;seg<segs;seg++){
              //ASF_segmhdr_t* sh;
              unsigned char streamno;
              unsigned int seq;
              unsigned int x;	// offset or timestamp
	      unsigned int rlen;
	      //
              int len;
              unsigned int time2=0;
	      int keyframe=0;

              if(p>=p_end) mp_msg(MSGT_DEMUX,MSGL_V,"Warning! invalid packet 1, sig11 coming soon...\n");

              if( mp_msg_test(MSGT_DEMUX,MSGL_DBG2) ){
                int i;
                printf("seg %d:",seg);
                for(i=0;i<16;i++) printf(" %02X",p[i]);
                printf("\n");
              }

              streamno=p[0]&0x7F;
	      if(p[0]&0x80) keyframe=1;
	      p++;

              // Read media object number (seq):
	      switch((segtype>>4)&3){
	      case 3: seq=LOAD_LE32(p);p+=4;break;	// dword
	      case 2: seq=LOAD_LE16(p);p+=2;break;	// word
	      case 1: seq=p[0];p++;break;		// byte
	      default: seq=0;
	      }
	      
              // Read offset or timestamp:
	      switch((segtype>>2)&3){
	      case 3: x=LOAD_LE32(p);p+=4;break;	// dword
	      case 2: x=LOAD_LE16(p);p+=2;break;	// word
	      case 1: x=p[0];p++;break;		// byte
	      default: x=0;
	      }

              // Read replic.data len:
	      switch((segtype)&3){
	      case 3: rlen=LOAD_LE32(p);p+=4;break;	// dword
	      case 2: rlen=LOAD_LE16(p);p+=2;break;	// word
	      case 1: rlen=p[0];p++;break;		// byte
	      default: rlen=0;
	      }
	      
//	      printf("### rlen=%d   \n",rlen);
      
              switch(rlen){
              case 0x01: // 1 = special, means grouping
	        //printf("grouping: %02X  \n",p[0]);
                ++p; // skip PTS delta
                break;
              default:
	        if(rlen>=8){
            	    p+=4;	// skip object size
            	    time2=LOAD_LE32(p); // read PTS
		    p+=rlen-4;
		} else {
            	    mp_msg(MSGT_DEMUX,MSGL_V,"unknown segment type (rlen): 0x%02X  \n",rlen);
		    time2=0; // unknown
		    p+=rlen;
		}
              }

              if(flags&1){
                // multiple segments
		switch(segsizetype){
	          case 3: len=LOAD_LE32(p);p+=4;break;	// dword
	          case 2: len=LOAD_LE16(p);p+=2;break;	// word
	          case 1: len=p[0];p++;break;		// byte
	          default: len=plen-(p-asf->packet); // ???
		}
              } else {
                // single segment
                len=plen-(p-asf->packet);
              }
              if(len<0 || (p+len)>p_end){
                mp_msg(MSGT_DEMUX,MSGL_V,"ASF_parser: warning! segment len=%d\n",len);
              }
              mp_dbg(MSGT_DEMUX,MSGL_DBG4,"  seg #%d: streamno=%d  seq=%d  type=%02X  len=%d\n",seg,streamno,seq,rlen,len);

              switch(rlen){
              case 0x01:
                // GROUPING:
                //printf("ASF_parser: warning! grouping (flag=1) not yet supported!\n",len);
                //printf("  total: %d  \n",len);
		while(len>0){
		  int len2=p[0];
		  p++;
                  //printf("  group part: %d bytes\n",len2);
                  demux_asf_read_packet(demux,p,len2,streamno,seq,x,duration,-1,keyframe);
                  p+=len2;
		  len-=len2+1;
		  ++seq;
		}
                if(len!=0){
                  mp_msg(MSGT_DEMUX,MSGL_V,"ASF_parser: warning! groups total != len\n");
                }
                break;
              default:
                // NO GROUPING:
                //printf("fragment offset: %d  \n",sh->x);
                demux_asf_read_packet(demux,p,len,streamno,seq,time2,duration,x,keyframe);
                p+=len;
                break;
	      }
              
            } // for segs
            return 1; // success
    }
    
    mp_msg(MSGT_DEMUX,MSGL_V,"%08"PRIX64":  UNKNOWN TYPE  %02X %02X %02X %02X %02X...\n",(int64_t)demux->filepos,asf->packet[0],asf->packet[1],asf->packet[2],asf->packet[3],asf->packet[4]);
    return 0;
}

#include "stheader.h"

extern void skip_audio_frame(sh_audio_t *sh_audio);

static void demux_seek_asf(demuxer_t *demuxer,float rel_seek_secs,float audio_delay,int flags){
    struct asf_priv* asf = demuxer->priv;
    demux_stream_t *d_audio=demuxer->audio;
    demux_stream_t *d_video=demuxer->video;
    sh_audio_t *sh_audio=d_audio->sh;
//    sh_video_t *sh_video=d_video->sh;

  //FIXME: OFF_T - didn't test ASF case yet (don't have a large asf...)
  //FIXME: reports good or bad to steve@daviesfam.org please

  //================= seek in ASF ==========================
    float p_rate=asf->packetrate; // packets / sec
    off_t rel_seek_packs=(flags&2)?	 // FIXME: int may be enough?
	(rel_seek_secs*(demuxer->movi_end-demuxer->movi_start)/asf->packetsize):
	(rel_seek_secs*p_rate);
    off_t rel_seek_bytes=rel_seek_packs*asf->packetsize;
    off_t newpos;
    //printf("ASF: packs: %d  duration: %d  \n",(int)fileh.packets,*((int*)&fileh.duration));
//    printf("ASF_seek: %d secs -> %d packs -> %d bytes  \n",
//       rel_seek_secs,rel_seek_packs,rel_seek_bytes);
    newpos=((flags&1)?demuxer->movi_start:demuxer->filepos)+rel_seek_bytes;
    if(newpos<0 || newpos<demuxer->movi_start) newpos=demuxer->movi_start;
//    printf("\r -- asf: newpos=%d -- \n",newpos);
    stream_seek(demuxer->stream,newpos);

    if (asf->asf_is_dvr_ms) asf->dvr_last_vid_pts = 0.0f;

    if (d_video->id >= 0)
    ds_fill_buffer(d_video);
    if(sh_audio){
      ds_fill_buffer(d_audio);
    }
    
    if (d_video->id >= 0)
    while(1){
	if(sh_audio && !d_audio->eof){
	  float a_pts=d_audio->pts;
          a_pts+=(ds_tell_pts(d_audio)-sh_audio->a_in_buffer_len)/(float)sh_audio->i_bps;
	  // sync audio:
          if (d_video->pts > a_pts){
	      skip_audio_frame(sh_audio);
//	      if(!ds_fill_buffer(d_audio)) sh_audio=NULL; // skip audio. EOF?
	      continue;
	  }
	}
	if(d_video->flags&1) break; // found a keyframe!
	if(!ds_fill_buffer(d_video)) break; // skip frame.  EOF?
    }


}

static int demux_asf_control(demuxer_t *demuxer,int cmd, void *arg){
    struct asf_priv* asf = demuxer->priv;
/*  demux_stream_t *d_audio=demuxer->audio;
    demux_stream_t *d_video=demuxer->video;
    sh_audio_t *sh_audio=d_audio->sh;
    sh_video_t *sh_video=d_video->sh;
*/
    switch(cmd) {
	case DEMUXER_CTRL_GET_TIME_LENGTH:
	    *((double *)arg)=(double)(asf->movielength);
	    return DEMUXER_CTRL_OK;

	case DEMUXER_CTRL_GET_PERCENT_POS:
		return DEMUXER_CTRL_DONTKNOW;

	default:
	    return DEMUXER_CTRL_NOTIMPL;
    }
}


static demuxer_t* demux_open_asf(demuxer_t* demuxer)
{
    struct asf_priv* asf = demuxer->priv;
    sh_audio_t *sh_audio=NULL;
    sh_video_t *sh_video=NULL;

    //---- ASF header:
    if(!asf) return NULL;
    if (!read_asf_header(demuxer,asf)) {
        free(asf);
        return NULL;
    }
    stream_reset(demuxer->stream);
    stream_seek(demuxer->stream,demuxer->movi_start);
//    demuxer->idx_pos=0;
//    demuxer->endpos=avi_header.movi_end;
    if(demuxer->video->id != -2) {
        if(!ds_fill_buffer(demuxer->video)){
            mp_msg(MSGT_DEMUXER,MSGL_WARN,"ASF: " MSGTR_MissingVideoStream);
            demuxer->video->sh=NULL;
            //printf("ASF: missing video stream!? contact the author, it may be a bug :(\n");
        } else {
            sh_video=demuxer->video->sh;sh_video->ds=demuxer->video;
            //sh_video->fps=1000.0f; sh_video->frametime=0.001f; // 1ms  - now set when reading asf header
            //sh_video->i_bps=10*asf->packetsize; // FIXME!

            if (asf->asf_is_dvr_ms) {
                sh_video->bih->biWidth = 0;
                sh_video->bih->biHeight = 0;
            }
        }
    }

    if(demuxer->audio->id!=-2){
        mp_msg(MSGT_DEMUXER,MSGL_V,MSGTR_ASFSearchingForAudioStream,demuxer->audio->id);
        if(!ds_fill_buffer(demuxer->audio)){
            mp_msg(MSGT_DEMUXER,MSGL_INFO,"ASF: " MSGTR_MissingAudioStream);
            demuxer->audio->sh=NULL;
        } else {
            sh_audio=demuxer->audio->sh;sh_audio->ds=demuxer->audio;
            sh_audio->format=sh_audio->wf->wFormatTag;
        }
    }
    if(!demuxer->stream->seek)
        demuxer->seekable=0;

    return demuxer;
}


demuxer_desc_t demuxer_desc_asf = {
  "ASF demuxer",
  "asf",
  "ASF",
  "A'rpi",
  "ASF, WMV, WMA",
  DEMUXER_TYPE_ASF,
  1, // safe autodetect
  asf_check_header,
  demux_asf_fill_buffer,
  demux_open_asf,
  NULL, //demux_close_asf,
  demux_seek_asf,
  demux_asf_control
};