rgbConv.scale(data,rgb_render);
if(!stacked) { rgbConv.scale(data,rgb_render); }else { stack(rgb_alternate,data, uw,uh); stack(rgb_alternate+uw*uh,data+uw*uh, uw>>1,uh>>1); stack(rgb_alternate+((5*uw*uh)>>2),data+((5*uw*uh)>>2), uw>>1,uh>>1); rgbConv.scale(rgb_alternate,rgb_render); }
uint8_t  GUI_PreviewUpdate(uint8_t *data){      if(  dialog)       {		// First convert YV12 to RGB	      // COL_yv12rgb( uw, uh,data, rgb_render);	      rgbConv.scale(data,rgb_render);	       previewRender();	       if(lock==1)	    	{	    		dialog=NULL;	    		return 0;	    	}	    	else	    		return 1;	    }	    return 0;}