summaryrefslogtreecommitdiffstats
path: root/libvo/sub.c
blob: d48f84c05e721dfe0debbbbb4ecbc2364ac03410 (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
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672

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

#include "config.h"
#ifdef HAVE_MALLOC_H
#include <malloc.h>
#endif

#include "mp_msg.h"
#include "video_out.h"
#include "font_load.h"
#include "sub.h"
#include "../spudec.h"

char * __sub_osd_names[]={
    "Seekbar",
    "Play",
    "Pause",
    "Stop",
    "Rewind",
    "Forward",
    "Clock",
    "Contrast",
    "Saturation",
    "Volume",
    "Brightness",
    "Hue"
};
char * __sub_osd_names_short[] ={ "", "|>", "||", "[]", "<<" , ">>", "", "", "", "", "", ""};

//static int vo_font_loaded=-1;
font_desc_t* vo_font=NULL;

unsigned char* vo_osd_text=NULL;
int sub_unicode=0;
int sub_utf8=0;
int sub_pos=100;
int sub_visibility=1;

// return the real height of a char:
static inline int get_height(int c,int h){
    int font;
    if ((font=vo_font->font[c])>=0)
	if(h<vo_font->pic_a[font]->h) h=vo_font->pic_a[font]->h;
    return h;
}

// renders char to a big per-object buffer where alpha and bitmap are separated
static void draw_alpha_buf(mp_osd_obj_t* obj, int x0,int y0, int w,int h, unsigned char* src, unsigned char *srca, int stride)
{
    int dststride = obj->stride;
    int dstskip = obj->stride-w;
    int srcskip = stride-w;
    int i, j;
    unsigned char *b = obj->bitmap_buffer + (y0-obj->bbox.y1)*dststride + (x0-obj->bbox.x1);
    unsigned char *a = obj->alpha_buffer  + (y0-obj->bbox.y1)*dststride + (x0-obj->bbox.x1);
    unsigned char *bs = src;
    unsigned char *as = srca;

    if (x0 < obj->bbox.x1 || x0+w > obj->bbox.x2 || y0 < obj->bbox.y1 || y0+h > obj->bbox.y2) {
	fprintf(stderr, "osd text out of range: bbox [%d %d %d %d], txt [%d %d %d %d]\n",
		obj->bbox.x1, obj->bbox.x2, obj->bbox.y1, obj->bbox.y2,
		x0, x0+w, y0, y0+h);
	return;
    }
    
    for (i = 0; i < h; i++) {
	for (j = 0; j < w; j++, b++, a++, bs++, as++) {
	    if (*b < *bs) *b = *bs;
	    if (*as) {
		if (*a == 0 || *a > *as) *a = *as;
	    }
	}
	b+= dstskip;
	a+= dstskip;
	bs+= srcskip;
	as+= srcskip;
    }
}

// allocates/enlarges the alpha/bitmap buffer
static void alloc_buf(mp_osd_obj_t* obj)
{
    int len;
    if (obj->bbox.x2 < obj->bbox.x1) obj->bbox.x2 = obj->bbox.x1;
    if (obj->bbox.y2 < obj->bbox.y1) obj->bbox.y2 = obj->bbox.y1;
    obj->stride = ((obj->bbox.x2-obj->bbox.x1)+7)&(~7);
    len = obj->stride*(obj->bbox.y2-obj->bbox.y1);
    if (obj->allocated<len) {
	obj->allocated = len;
	free(obj->bitmap_buffer);
	free(obj->alpha_buffer);
	obj->bitmap_buffer = (unsigned char *)memalign(16, len);
	obj->alpha_buffer = (unsigned char *)memalign(16, len);
    }
    memset(obj->bitmap_buffer, 0, len);
    memset(obj->alpha_buffer, 0, len);
}

// renders the buffer
inline static void vo_draw_text_from_buffer(mp_osd_obj_t* obj,void (*draw_alpha)(int x0,int y0, int w,int h, unsigned char* src, unsigned char *srca, int stride)){
    if (obj->allocated > 0) {
	draw_alpha(obj->bbox.x1,obj->bbox.y1,
		   obj->bbox.x2-obj->bbox.x1,
		   obj->bbox.y2-obj->bbox.y1,
		   obj->bitmap_buffer,
		   obj->alpha_buffer,
		   obj->stride);
    }
}

inline static void vo_update_text_osd(mp_osd_obj_t* obj,int dxs,int dys){
	unsigned char *cp=vo_osd_text;
	int x=20;
	int h=0;
	int font;

        obj->bbox.x1=obj->x=x;
        obj->bbox.y1=obj->y=10;

        while (*cp){
          int c=*cp++;
	  render_one_glyph(vo_font, c);
	  x+=vo_font->width[c]+vo_font->charspace;
	  h=get_height(c,h);
        }
	
	obj->bbox.x2=x-vo_font->charspace;
	obj->bbox.y2=obj->bbox.y1+h;
	obj->flags|=OSDFLAG_BBOX;

	alloc_buf(obj);

	cp=vo_osd_text;
	x = obj->x;
        while (*cp){
          int c=*cp++;
          if ((font=vo_font->font[c])>=0)
            draw_alpha_buf(obj,x,obj->y,
			   vo_font->width[c],
			   vo_font->pic_a[font]->h,
			   vo_font->pic_b[font]->bmp+vo_font->start[c],
			   vo_font->pic_a[font]->bmp+vo_font->start[c],
			   vo_font->pic_a[font]->w);
          x+=vo_font->width[c]+vo_font->charspace;
        }
}

int vo_osd_progbar_type=-1;
int vo_osd_progbar_value=100;   // 0..256

// if we have n=256 bars then OSD progbar looks like below
// 
// 0   1    2    3 ... 256  <= vo_osd_progbar_value
// |   |    |    |       |
// [ ===  ===  === ... === ]
// 
//  the above schema is rescalled to n=elems bars

inline static void vo_update_text_progbar(mp_osd_obj_t* obj,int dxs,int dys){

    obj->flags|=OSDFLAG_CHANGED|OSDFLAG_VISIBLE;
    
    if(vo_osd_progbar_type<0 || !vo_font){
       obj->flags&=~OSDFLAG_VISIBLE;
       return;
    }
    
    render_one_glyph(vo_font, OSD_PB_START);
    render_one_glyph(vo_font, OSD_PB_END);
    render_one_glyph(vo_font, OSD_PB_0);
    render_one_glyph(vo_font, OSD_PB_1);
    render_one_glyph(vo_font, vo_osd_progbar_type);

    // calculate bbox corners:    
    {	int h=0;
        int y=(dys-vo_font->height)/2;
        int delimw=vo_font->width[OSD_PB_START]
     		  +vo_font->width[OSD_PB_END]
     		  +vo_font->charspace;
        int width=(2*dxs-3*delimw)/3;
   	int charw=vo_font->width[OSD_PB_0]+vo_font->charspace;
        int elems=width/charw;
   	int x=(dxs-elems*charw-delimw)/2;
	int delta = 0;
	h=get_height(OSD_PB_START,h);
	h=get_height(OSD_PB_END,h);
	h=get_height(OSD_PB_0,h);
	h=get_height(OSD_PB_1,h);
	if (vo_osd_progbar_type>0 && vo_font->font[vo_osd_progbar_type]>=0){
	    delta = vo_font->width[vo_osd_progbar_type]+vo_font->spacewidth;
	    delta = (x-delta > 0) ? delta : x;
	    h=get_height(vo_osd_progbar_type,h);
	}
	obj->bbox.x1=obj->x=x;
	obj->bbox.y1=obj->y=y;
	obj->bbox.x2=x+width+delimw;
	obj->bbox.y2=y+h; //vo_font->height;
	obj->flags|=OSDFLAG_BBOX;
	obj->params.progbar.elems=elems;
	obj->bbox.x1-=delta; // space for an icon
    }

    alloc_buf(obj);

    // render it:
    {	unsigned char *s;
   	unsigned char *sa;
        int i,w,h,st,mark;
   	int x=obj->x;
        int y=obj->y;
        int c,font;
   	int charw=vo_font->width[OSD_PB_0]+vo_font->charspace;
        int elems=obj->params.progbar.elems;

	if (vo_osd_progbar_value<=0)
     	   mark=0;
	else {
	   int ev=vo_osd_progbar_value*elems;
	   mark=ev>>8;
	   if (ev & 0xFF)  mark++;
	   if (mark>elems) mark=elems;
	}
   

//        printf("osd.progbar  width=%d  xpos=%d\n",width,x);

        c=vo_osd_progbar_type;
        if(vo_osd_progbar_type>0 && (font=vo_font->font[c])>=0) {
	    int xp=x-vo_font->width[c]-vo_font->spacewidth;
	   draw_alpha_buf(obj,(xp<0?0:xp),y,
              vo_font->width[c],
              vo_font->pic_a[font]->h,
              vo_font->pic_b[font]->bmp+vo_font->start[c],
              vo_font->pic_a[font]->bmp+vo_font->start[c],
              vo_font->pic_a[font]->w);
	}
   
        c=OSD_PB_START;
        if ((font=vo_font->font[c])>=0)
            draw_alpha_buf(obj,x,y,
              vo_font->width[c],
              vo_font->pic_a[font]->h,
              vo_font->pic_b[font]->bmp+vo_font->start[c],
              vo_font->pic_a[font]->bmp+vo_font->start[c],
              vo_font->pic_a[font]->w);
        x+=vo_font->width[c]+vo_font->charspace;

   	c=OSD_PB_0;
   	if ((font=vo_font->font[c])>=0){
	   w=vo_font->width[c];
	   h=vo_font->pic_a[font]->h;
	   s=vo_font->pic_b[font]->bmp+vo_font->start[c];
	   sa=vo_font->pic_a[font]->bmp+vo_font->start[c];
	   st=vo_font->pic_a[font]->w;
	   if ((i=mark)) do {
	       draw_alpha_buf(obj,x,y,w,h,s,sa,st);
	       x+=charw;
	   } while(--i);
	}

   	c=OSD_PB_1;
	if ((font=vo_font->font[c])>=0){
	   w=vo_font->width[c];
	   h=vo_font->pic_a[font]->h;
	   s =vo_font->pic_b[font]->bmp+vo_font->start[c];
	   sa=vo_font->pic_a[font]->bmp+vo_font->start[c];
	   st=vo_font->pic_a[font]->w;
	   if ((i=elems-mark)) do {
	       draw_alpha_buf(obj,x,y,w,h,s,sa,st);
	       x+=charw;
	   } while(--i);
	}

        c=OSD_PB_END;
        if ((font=vo_font->font[c])>=0)
            draw_alpha_buf(obj,x,y,
              vo_font->width[c],
              vo_font->pic_a[font]->h,
              vo_font->pic_b[font]->bmp+vo_font->start[c],
              vo_font->pic_a[font]->bmp+vo_font->start[c],
              vo_font->pic_a[font]->w);
//        x+=vo_font->width[c]+vo_font->charspace;

    }
//        vo_osd_progbar_value=(vo_osd_progbar_value+1)&0xFF;

}

subtitle* vo_sub=NULL;

// vo_draw_text_sub(int dxs,int dys,void (*draw_alpha)(int x0,int y0, int w,int h, unsigned char* src, unsigned char *srca, int stride))

inline static void vo_update_text_sub(mp_osd_obj_t* obj,int dxs,int dys){
   unsigned char *t;
   int c,i,j,l,x,y,font,prevc;
   int len;
   int k,lastk;
   int lastStripPosition;
   int xsize,lastxsize;
   int xmin=dxs,xmax=0;
   int h,lasth;
   
   obj->flags|=OSDFLAG_CHANGED|OSDFLAG_VISIBLE;

   if(!vo_sub || !vo_font || !sub_visibility){
       obj->flags&=~OSDFLAG_VISIBLE;
       return;
   }
   
   obj->bbox.y2=obj->y=dys;
   obj->params.subtitle.lines=0;

      // too long lines divide into a smaller ones
      i=k=lasth=0;
      h=vo_font->height;
      xsize=-vo_font->charspace;
      lastStripPosition=-1;
      l=vo_sub->lines;

      while (l) {
	  l--;
	  t=vo_sub->text[i++];	  
	  len=strlen(t)-1;
	  
//	  printf("sub(%d) '%s'\n",len,t);
//	  if(len<0) memy -=h; // according to max of vo_font->pic_a[font]->h 
//	  else

	  prevc = -1;

	  for (j=0;j<=len;j++){
	      if ((c=t[j])>=0x80){
		 if (sub_utf8){
		    if ((c & 0xe0) == 0xc0)    /* 2 bytes U+00080..U+0007FF*/
		       c = (c & 0x1f)<<6 | (t[++j] & 0x3f);
		    else if((c & 0xf0) == 0xe0)/* 3 bytes U+00800..U+00FFFF*/
		       c = ((c & 0x0f)<<6 |
			    (t[++j] & 0x3f))<<6 | (t[++j] & 0x3f);
		 } else if (sub_unicode) 
		       c = (c<<8) + t[++j]; 
	      }
	      if (k==MAX_UCS){
		 len=j; // end here
		 mp_msg(MSGT_OSD,MSGL_WARN,"\nMAX_UCS exceeded!\n");
	      }
	      if (!c) c++; // avoid UCS 0
	      render_one_glyph(vo_font, c);
	      if (c==' '){
		 lastk=k;
		 lastStripPosition=j;
		 lastxsize=xsize;
 	      } else if ((!suboverlap_enabled) && ((font = vo_font->font[c]) >= 0)) {
 		/*
 		   With overlapping subtitles, we need to comment this out,
 		   beacuse that part of the code creates subtitles with the
 		   last line blank (" "): in this case previous 'if' statement
 		   is false an following 'if' is not executed. When, instead,
 		   a subtitle with a non-blank last line arrives, the following
 		   code is executed, and the result is a small 'jump' of the
 		   subtiles. We can not simply delete the following, unless
 		   having the last subtitle line partly drawn outside the
 		   screen, so, some lines forward, we introduce an increment
 		   which affects both blank and non-blank lines.
 		   *sfalco*
 		 */
		  if (vo_font->pic_a[font]->h > h){
		     h=vo_font->pic_a[font]->h;
		  }
	      }
	      obj->params.subtitle.utbl[k++]=c;
	      xsize+=vo_font->width[c]+vo_font->charspace+kerning(vo_font,prevc,c);
	      if (dxs<xsize){
		  prevc = -1;
		 if (lastStripPosition>0){
		    j=lastStripPosition;
		    xsize=lastxsize;
		    k=lastk;
		 } else {
		    xsize -=vo_font->width[c]+vo_font->charspace+kerning(vo_font,prevc,c);; // go back
		    k--; // cut line here
		    while (t[j] && t[j]!=' ') j++; // jump to the nearest space
		 }
	      } else if (j<len) {
		  prevc = c;
		  continue;
	      }
	      if (h>obj->y){ // out of the screen so end parsing
		 obj->y -= lasth - vo_font->height; // correct the y position
		 l=0;
		 break;
	      }
	      obj->params.subtitle.utbl[k++]=0;
	      obj->params.subtitle.xtbl[obj->params.subtitle.lines++]=(dxs-xsize)/2;
	      if(xmin>(dxs-xsize)/2) xmin=(dxs-xsize)/2;
	      if(xmax<(dxs+xsize)/2) xmax=(dxs+xsize)/2;
	      if (obj->params.subtitle.lines==MAX_UCSLINES||k>MAX_UCS){
		 l=0; len=j; // end parsing
	      } else if(l || j<len){ // not the last line or not the last char
		 lastStripPosition=-1;
		 xsize=-vo_font->charspace;
		 lasth=h;
		 h=vo_font->height;
	      }
//	      printf("h: %d -> %d  \n",vo_font->height,h);
	      obj->y -=h; // according to max of vo_font->pic_a[font]->h 
	      prevc = -1;
	  }
      }

    /*
       Here is the little increment we talked about before. '40' is the
       ASCII code for '(', which, hopefully, is the highest char of the
       font.
       *sfalco*
     */
    if(suboverlap_enabled) obj->y -= vo_font->pic_a[vo_font->font[40]]->h - vo_font->height;
    if (obj->y >= (dys * sub_pos / 100)){
	int old=obj->y;
	obj->y = dys * sub_pos /100;
	obj->bbox.y2-=old-obj->y;
    }
    
    // calculate bbox:
    obj->bbox.x1=xmin;
    obj->bbox.x2=xmax;
    obj->bbox.y1=obj->y;
//    obj->bbox.y2=obj->y+obj->params.subtitle.lines*vo_font->height;
    obj->flags|=OSDFLAG_BBOX;

    alloc_buf(obj);

    y = obj->y;
    
    i=j=0;
    if ((l=obj->params.subtitle.lines)) for (;;) {
 	 x=obj->params.subtitle.xtbl[i++]; 
	 prevc = -1;
	 while ((c=obj->params.subtitle.utbl[j++])){
	       x += kerning(vo_font,prevc,c);
	       if ((font=vo_font->font[c])>=0)
		  draw_alpha_buf(obj,x,y,
			     vo_font->width[c],
			     vo_font->pic_a[font]->h+y<obj->dys ? vo_font->pic_a[font]->h : obj->dys-y,
			     vo_font->pic_b[font]->bmp+vo_font->start[c],
			     vo_font->pic_a[font]->bmp+vo_font->start[c],
			     vo_font->pic_a[font]->w);
	       x+=vo_font->width[c]+vo_font->charspace;
               prevc = c;
	 }
         if (!--l) break;
         y+=vo_font->height;
    }
    
}

inline static void vo_update_spudec_sub(mp_osd_obj_t* obj, int dxs, int dys)
{
  unsigned int bbox[4];
  spudec_calc_bbox(vo_spudec, dxs, dys, bbox);
  obj->bbox.x1 = bbox[0];
  obj->bbox.x2 = bbox[1];
  obj->bbox.y1 = bbox[2];
  obj->bbox.y2 = bbox[3];
  obj->flags |= OSDFLAG_BBOX;
}

inline static void vo_draw_spudec_sub(mp_osd_obj_t* obj, void (*draw_alpha)(int x0, int y0, int w, int h, unsigned char* src, unsigned char* srca, int stride))
{
  spudec_draw_scaled(vo_spudec, obj->dxs, obj->dys, draw_alpha);
}

void *vo_spudec=NULL;
void *vo_vobsub=NULL;

static int draw_alpha_init_flag=0;

extern void vo_draw_alpha_init();

       mp_osd_obj_t* vo_osd_list=NULL;

mp_osd_obj_t* new_osd_obj(int type){
    mp_osd_obj_t* osd=malloc(sizeof(mp_osd_obj_t));
    memset(osd,0,sizeof(mp_osd_obj_t));
    osd->next=vo_osd_list;
    vo_osd_list=osd;
    osd->type=type;
    osd->alpha_buffer = NULL;
    osd->bitmap_buffer = NULL;
    osd->allocated = -1;
    return osd;
}

void free_osd_list(){
    mp_osd_obj_t* obj=vo_osd_list;
    while(obj){
	mp_osd_obj_t* next=obj->next;
	if (obj->alpha_buffer) free(obj->alpha_buffer);
	if (obj->bitmap_buffer) free(obj->bitmap_buffer);
	free(obj);
	obj=next;
    }
    vo_osd_list=NULL;
}

int vo_update_osd(int dxs,int dys){
    mp_osd_obj_t* obj=vo_osd_list;
    int chg=0;

#ifdef HAVE_FREETYPE    
    // here is the right place to get screen dimensions
    if (force_load_font) {
	force_load_font = 0;
	load_font(dxs, dys);
    }
#endif

    while(obj){
      if(dxs!=obj->dxs || dys!=obj->dys || obj->flags&OSDFLAG_FORCE_UPDATE){
        int vis=obj->flags&OSDFLAG_VISIBLE;
	obj->flags&=~OSDFLAG_BBOX;
	switch(obj->type){
	case OSDTYPE_SUBTITLE:
	    vo_update_text_sub(obj,dxs,dys);
	    break;
	case OSDTYPE_PROGBAR:
	    vo_update_text_progbar(obj,dxs,dys);
	    break;
	case OSDTYPE_SPU:
	    if(sub_visibility && vo_spudec && spudec_visible(vo_spudec)){
	        vo_update_spudec_sub(obj, dxs, dys);
		obj->flags|=OSDFLAG_VISIBLE|OSDFLAG_CHANGED;
	    }
	    else
		obj->flags&=~OSDFLAG_VISIBLE;
	    break;
	case OSDTYPE_OSD:
	    if(vo_font && vo_osd_text && vo_osd_text[0]){
		vo_update_text_osd(obj,dxs,dys); // update bbox
		obj->flags|=OSDFLAG_VISIBLE|OSDFLAG_CHANGED;
	    } else
		obj->flags&=~OSDFLAG_VISIBLE;
	    break;
	}
	// check bbox:
	if(!(obj->flags&OSDFLAG_BBOX)){
	    // we don't know, so assume the whole screen changed :(
	    obj->bbox.x1=obj->bbox.y1=0;
	    obj->bbox.x2=dxs;
	    obj->bbox.y2=dys;
	    obj->flags|=OSDFLAG_BBOX;
	} else {
	    // check bbox, reduce it if it's out of bounds (corners):
	    if(obj->bbox.x1<0) obj->bbox.x1=0;
	    if(obj->bbox.y1<0) obj->bbox.y1=0;
	    if(obj->bbox.x2>dxs) obj->bbox.x2=dxs;
	    if(obj->bbox.y2>dys) obj->bbox.y2=dys;
	    if(obj->flags&OSDFLAG_VISIBLE)
	    // debug:
	    mp_msg(MSGT_OSD,MSGL_DBG2,"OSD update: %d;%d %dx%d  \n",
		obj->bbox.x1,obj->bbox.y1,obj->bbox.x2-obj->bbox.x1,
		obj->bbox.y2-obj->bbox.y1);
	}
	// check if visibility changed:
	if(vis != (obj->flags&OSDFLAG_VISIBLE) ) obj->flags|=OSDFLAG_CHANGED;
	// remove the cause of automatic update:
	obj->dxs=dxs; obj->dys=dys;
	obj->flags&=~OSDFLAG_FORCE_UPDATE;
      }
      if(obj->flags&OSDFLAG_CHANGED){
        chg|=1<<obj->type;
	mp_msg(MSGT_OSD,MSGL_DBG2,"OSD chg: %d  V: %s  pb:%d  \n",obj->type,(obj->flags&OSDFLAG_VISIBLE)?"yes":"no",vo_osd_progbar_type);
      }
      obj=obj->next;
    }
    return chg;
}

void vo_init_osd(){
    if(!draw_alpha_init_flag){
	draw_alpha_init_flag=1;
	vo_draw_alpha_init();
    }
    if(vo_osd_list) free_osd_list();
    // temp hack, should be moved to mplayer/mencoder later
    new_osd_obj(OSDTYPE_OSD);
    new_osd_obj(OSDTYPE_SUBTITLE);
    new_osd_obj(OSDTYPE_PROGBAR);
    new_osd_obj(OSDTYPE_SPU);
#ifdef HAVE_FREETYPE
    force_load_font = 1;
#endif
}

int vo_osd_changed_flag=0;

void vo_remove_text(int dxs,int dys,void (*remove)(int x0,int y0, int w,int h)){
    mp_osd_obj_t* obj=vo_osd_list;
    vo_update_osd(dxs,dys);
    while(obj){
      if(((obj->flags&OSDFLAG_CHANGED) || (obj->flags&OSDFLAG_VISIBLE)) && 
         (obj->flags&OSDFLAG_OLD_BBOX)){
          int w=obj->old_bbox.x2-obj->old_bbox.x1;
	  int h=obj->old_bbox.y2-obj->old_bbox.y1;
	  if(w>0 && h>0){
	      vo_osd_changed_flag=obj->flags&OSDFLAG_CHANGED;	// temp hack
              remove(obj->old_bbox.x1,obj->old_bbox.y1,w,h);
	  }
//	  obj->flags&=~OSDFLAG_OLD_BBOX;
      }
      obj=obj->next;
    }
}

void vo_draw_text(int dxs,int dys,void (*draw_alpha)(int x0,int y0, int w,int h, unsigned char* src, unsigned char *srca, int stride)){
    mp_osd_obj_t* obj=vo_osd_list;
    vo_update_osd(dxs,dys);
    while(obj){
      if(obj->flags&OSDFLAG_VISIBLE){
	vo_osd_changed_flag=obj->flags&OSDFLAG_CHANGED;	// temp hack
	switch(obj->type){
	case OSDTYPE_SPU:
	    vo_draw_spudec_sub(obj, draw_alpha); // FIXME
	    break;
	case OSDTYPE_OSD:
	case OSDTYPE_SUBTITLE:
	case OSDTYPE_PROGBAR:
	    vo_draw_text_from_buffer(obj,draw_alpha);
	    break;
	}
	obj->old_bbox=obj->bbox;
	obj->flags|=OSDFLAG_OLD_BBOX;
      }
      obj->flags&=~OSDFLAG_CHANGED;
      obj=obj->next;
    }
}

static int vo_osd_changed_status = 0;

int vo_osd_changed(int new_value)
{
    mp_osd_obj_t* obj=vo_osd_list;
    int ret = vo_osd_changed_status;
    vo_osd_changed_status = new_value;

    while(obj){
	if(obj->type==new_value) obj->flags|=OSDFLAG_FORCE_UPDATE;
	obj=obj->next;
    }

    return ret;
}

//      BBBBBBBBBBBB   AAAAAAAAAAAAA  BBBBBBBBBBB
//              BBBBBBBBBBBB  BBBBBBBBBBBBB
//                        BBBBBBB

// return TRUE if we have osd in the specified rectangular area:
int vo_osd_check_range_update(int x1,int y1,int x2,int y2){
    mp_osd_obj_t* obj=vo_osd_list;
    while(obj){
	if(obj->flags&OSDFLAG_VISIBLE){
	    if(	(obj->bbox.x1<=x2 && obj->bbox.x2>=x1) &&
		(obj->bbox.y1<=y2 && obj->bbox.y2>=y1) ) return 1;
	}
	obj=obj->next;
    }
    return 0;
}