sub.c

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(0:wm/2)    (wm/2:wm-wm/2)

********** *********** (0:hm/3)
***   **** ****   ****
*** 1 **** **** 2 **** 
***   **** ****   ****
********** ***********
********** ***********

********** *********** (hm/3:hm-2*hm/3)
********** ***********
***   **** ****   ****
*** 3 **** **** 4 ****
***   **** ****   ****
********** ***********
********** ***********
********** ***********

********** *********** (hm-hm/3:hm/3)
***   **** ****   ****
*** 5 **** **** 6 ****
***   **** ****   **** 
********** ***********   
********** ***********

*/              
                if(tc.gfx>1){ //separated gfx
                    for(b=0;b<6;b++){
                        color=(tc.unicode>>b)&1?tc.fg:tc.bg;
                        draw_alpha_buf(obj,x+ax[b]+1,y+ay[b]+1,aw[b]-2,ah[b]-2,buf[color],buf[8],wm);
                    }
                    //separated gfx (background borders)
                    //vertical
                    draw_alpha_buf(obj,x        ,y,1,hm,buf[tc.bg],buf[8],wm);
                    draw_alpha_buf(obj,x+ax[1]-1,y,2,hm,buf[tc.bg],buf[8],wm);
                    draw_alpha_buf(obj,x+ax[1]+aw[1]-1,y,wm-ax[1]-aw[1]+1,hm,buf[tc.bg],buf[8],wm);
                    //horizontal
                    draw_alpha_buf(obj,x,y      ,wm,1,buf[tc.bg],buf[8],wm);
                    draw_alpha_buf(obj,x,y+ay[0]+ah[0]-1,wm,2,buf[tc.bg],buf[8],wm);
                    draw_alpha_buf(obj,x,y+ay[2]+ah[2]-1,wm,2,buf[tc.bg],buf[8],wm);
                    draw_alpha_buf(obj,x,y+ay[4]+ah[4]-1,wm,hm-ay[4]-ah[4]+1,buf[tc.bg],buf[8],wm);
                }else{
                    for(b=0;b<6;b++){
                        color=(tc.unicode>>b)&1?tc.fg:tc.bg;
                        draw_alpha_buf(obj,x+ax[b],y+ay[b],aw[b],ah[b],buf[color],buf[8],wm);
                    }
                }
            }
            x+=wm;
        }
        y+=hm;
    }
    for(i=0;i<9;i++)
        free(buf[i]);
}
#endif

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);
    
    {
	int minw = vo_font->width[OSD_PB_START]+vo_font->width[OSD_PB_END]+vo_font->width[OSD_PB_0];
	if (vo_osd_progbar_type>0 && vo_font->font[vo_osd_progbar_type]>=0){
	    minw += vo_font->width[vo_osd_progbar_type]+vo_font->charspace+vo_font->spacewidth;
	}
	if (obj->bbox.x2 - obj->bbox.x1 < minw) return; // space too small, don't render anything
    }
    
    // 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,counter;
   int k;
   int lastStripPosition;
   int xsize;
   int xmin=dxs,xmax=0;
   int h,lasth;
   int xtblc, utblc;
   
   obj->flags|=OSDFLAG_CHANGED|OSDFLAG_VISIBLE;

   if(!vo_sub || !sub_font || !sub_visibility || (sub_font->font[40]<0)){
       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=sub_font->height;
      lastStripPosition=-1;
      l=vo_sub->lines;

    {
	struct osd_text_t *osl, *cp_ott, *tmp_ott, *tmp;
	struct osd_text_p *otp_sub = NULL, *otp_sub_tmp,	// these are used to store the whole sub text osd
	                  *otp, *tmp_otp, *pmt;	// these are used to manage sub text osd coming from a single sub line
	int *char_seq, char_position, xlimit = dxs * sub_width_p / 100, counter;

      while (l) {
	    xsize = -sub_font->charspace;
	  l--;
	  t=vo_sub->text[i++];	  
	    char_position = 0;
	    char_seq = calloc(strlen(t), sizeof(int));

	  prevc = -1;

	    otp = NULL;
	    osl = NULL;
	    x = 1;

	    // reading the subtitle words from vo_sub->text[]
          while (*t) {
            if (sub_utf8)
              c = utf8_get_char(&t);
            else if ((c = *t++) >= 0x80 && sub_unicode)
              c = (c<<8) + *t++;
	      if (k==MAX_UCS){
		 t += strlen(t); // end here
		 mp_msg(MSGT_OSD,MSGL_WARN,"\nMAX_UCS exceeded!\n");
	      }
	      if (!c) c++; // avoid UCS 0
	      render_one_glyph(sub_font, c);

		if (c == ' ') {
		    struct osd_text_t *tmp_ott = (struct osd_text_t *) calloc(1, sizeof(struct osd_text_t));

		    if (osl == NULL) {
			osl = cp_ott = tmp_ott;
		    } else {
			tmp_ott->prev = cp_ott;
			cp_ott->next = tmp_ott;
			tmp_ott->osd_kerning =
			    sub_font->charspace + sub_font->width[' '];
			cp_ott = tmp_ott;
		    }
		    tmp_ott->osd_length = xsize;
		    tmp_ott->text_length = char_position;
		    tmp_ott->text = (int *) malloc(char_position * sizeof(int));
		    for (counter = 0; counter < char_position; ++counter)
			tmp_ott->text[counter] = char_seq[counter];
		    char_position = 0;
		    xsize = 0;
		    prevc = c;
		} else {
		    int delta_xsize = sub_font->width[c] + sub_font->charspace + kerning(sub_font, prevc, c);
		    
		    if (xsize + delta_xsize <= dxs) {
			if (!x) x = 1;
			prevc = c;
			char_seq[char_position++] = c;
			xsize += delta_xsize;
			if ((!suboverlap_enabled) && ((font = sub_font->font[c]) >= 0)) {
			    if (sub_font->pic_a[font]->h > h) {
				h = sub_font->pic_a[font]->h;
			    }
			}
		    } else {
			if (x) {
			    mp_msg(MSGT_OSD, MSGL_WARN, "\nSubtitle word '%s' too long!\n", t);
			    x = 0;
			}
		    }
		}
	    }// for len (all words from subtitle line read)

	    // osl holds an ordered (as they appear in the lines) chain of the subtitle words
	    {
		struct osd_text_t *tmp_ott = (struct osd_text_t *) calloc(1, sizeof(struct osd_text_t));

		if (osl == NULL) {
		    osl = cp_ott = tmp_ott;
		} else {
		    tmp_ott->prev = cp_ott;
		    cp_ott->next = tmp_ott;
		    tmp_ott->osd_kerning =
			sub_font->charspace + sub_font->width[' '];
		    cp_ott = tmp_ott;
		}
		tmp_ott->osd_length = xsize;
		tmp_ott->text_length = char_position;
		tmp_ott->text = (int *) malloc(char_position * sizeof(int));
		for (counter = 0; counter < char_position; ++counter)
		    tmp_ott->text[counter] = char_seq[counter];
		char_position = 0;
		xsize = -sub_font->charspace;
	    }
	    free(char_seq);

	    if (osl != NULL) {
		int value = 0, exit = 0, minimum = 0;

		// otp will contain the chain of the osd subtitle lines coming from the single vo_sub line.
		otp = tmp_otp = (struct osd_text_p *) calloc(1, sizeof(struct osd_text_p));
		tmp_otp->ott = osl;
		for (tmp_ott = tmp_otp->ott; exit == 0; ) {
		    do {
			value += tmp_ott->osd_kerning + tmp_ott->osd_length;
			tmp_ott = tmp_ott->next;
		    } while ((tmp_ott != NULL) && (value + tmp_ott->osd_kerning + tmp_ott->osd_length <= xlimit));
		    if (tmp_ott != NULL) {
			struct osd_text_p *tmp = (struct osd_text_p *) calloc(1, sizeof(struct osd_text_p));

			tmp_otp->value = value;
			tmp_otp->next = tmp;
			tmp->prev = tmp_otp;
			tmp_otp = tmp;
			tmp_otp->ott = tmp_ott;
			value = -2 * sub_font->charspace - sub_font->width[' '];
		    } else {
			tmp_otp->value = value;
			exit = 1;
		    }
		}


#ifdef NEW_SPLITTING
		// minimum holds the 'sum of the differences in length among the lines',
		// a measure of the evenness of the lengths of the lines
		for (tmp_otp = otp; tmp_otp->next != NULL; tmp_otp = tmp_otp->next) {
		    pmt = tmp_otp->next;
		    while (pmt != NULL) {
			minimum += abs(tmp_otp->value - pmt->value);
			pmt = pmt->next;
		    }
		}

		if (otp->next != NULL) {
		    int mem1, mem2;
		    struct osd_text_p *mem, *hold;

		    exit = 0;
		    // until the last word of a line can be moved to the beginning of following line
		    // reducing the 'sum of the differences in length among the lines', it is done
		    while (exit == 0) {
			hold = NULL;
			exit = 1;
			for (tmp_otp = otp; tmp_otp->next != NULL; tmp_otp = tmp_otp->next) {
			    pmt = tmp_otp->next;
			    for (tmp = tmp_otp->ott; tmp->next != pmt->ott; tmp = tmp->next);
			    if (pmt->value + tmp->osd_length + pmt->ott->osd_kerning <= xlimit) {
				mem1 = tmp_otp->value;
				mem2 = pmt->value;
				tmp_otp->value = mem1 - tmp->osd_length - tmp->osd_kerning;
				pmt->value = mem2 + tmp->osd_length + pmt->ott->osd_kerning;

				value = 0;
				for (mem = otp; mem->next != NULL; mem = mem->next) {
				    pmt = mem->next;
				    while (pmt != NULL) {
					value += abs(mem->value - pmt->value);
					pmt = pmt->next;
				    }
				}
				if (value < minimum) {
				    minimum = value;
				    hold = tmp_otp;
				    exit = 0;
				}
				tmp_otp->value = mem1;
				tmp_otp->next->value = mem2;
			    }
			}
			// merging
			if (exit == 0) {
			    tmp_otp = hold;
			    pmt = tmp_otp->next;
			    for (tmp = tmp_otp->ott; tmp->next != pmt->ott; tmp = tmp->next);
			    mem1 = tmp_otp->value;
			    mem2 = pmt->value;
			    tmp_otp->value = mem1 - tmp->osd_length - tmp->osd_kerning;
			    pmt->value = mem2 + tmp->osd_length + pmt->ott->osd_kerning;
			    pmt->ott = tmp;
			}//~merging
		    }//~while(exit == 0)
		}//~if(otp->next!=NULL)
#endif

		// adding otp (containing splitted lines) to otp chain
		if (otp_sub == NULL) {
		    otp_sub = otp;
		    for (otp_sub_tmp = otp_sub; otp_sub_tmp->next != NULL; otp_sub_tmp = otp_sub_tmp->next);
		} else {
		    //updating ott chain
		    tmp = otp_sub->ott;