droidVncServer/jni/vnc/update_screen.c

#define OUT_T CONCAT3E(uint,OUT,_t)
#define FUNCTION CONCAT2E(update_screen_,OUT)

void FUNCTION(void)
{  
  static int i,j,offset;
  
  update_fb_info();
  
  //detect active buffer
  if (scrinfo.yoffset)
    offset=scrinfo.xres*scrinfo.yres;
  else
    offset=0;

  OUT_T* a = (OUT_T*)cmpbuf;
  OUT_T* b = (OUT_T*)fbmmap;
  
  int max_x=-1,max_y=-1, min_x=9999, min_y=9999;
  idle=1;
  
  if (rotation==0)
  {
   //memcpy(vncbuf,fbmmap,vncscr->width*vncscr->height*scrinfo.bits_per_pixel/CHAR_BIT);
	for (j = 0; j < scrinfo.yres; j++)
	{
	  for (i = 0; i < scrinfo.xres; i++)
	    {
		if (a[i + j * scrinfo.xres]!=b[i + j * scrinfo.xres + offset ])
		{
		  a[i + j * scrinfo.xres]=b[i + j * scrinfo.xres + offset];

		  if (i>max_x)
		    max_x=i;
		  if (i<min_x)
		    min_x=i;
		  
		  if (j>max_y)
		    max_y=j;
		  if (j<min_y)
		    min_y=j;
		  
		  if (idle)
		    idle=0;
		}
	    }
	}
  }
  else if (rotation==90)
  {
	for (j = 0; j < scrinfo.yres; j++)
	{
	  for (i = 0; i < scrinfo.xres; i++)
		{
		  if (a[(scrinfo.yres - 1 - j + i * scrinfo.yres)] != b[i + j * scrinfo.xres + offset])
		   {
		  a[(scrinfo.yres - 1 - j + i * scrinfo.yres)] = b[i + j * scrinfo.xres + offset ];
		  
		  if (i>max_y)
		    max_y=i;
		  if (i<min_y)
		    min_y=i;
		  
		  if (j>max_x)
		    max_x=j;
		  if (j<min_x)
		    min_x=j;
		  
		  if (idle)
		    idle=0;
		  }
		}
	}
  }
  else if (rotation==180)
  {
        for (j = 0; j < scrinfo.yres; j++)
	{
		for (i = 0; i < scrinfo.xres; i++)
		{
		  if (a[i + j * scrinfo.xres]!=b[scrinfo.yres*scrinfo.xres - (i + j * scrinfo.xres ) + offset ])
		  {
		    a[i + j * scrinfo.xres]=b[scrinfo.yres*scrinfo.xres - (i + j * scrinfo.xres) + offset ];
		    
		  if (i>max_x)
		    max_x=i;
		  if (i<min_x)
		    min_x=i;
		  
		  if (j>max_y)
		    max_y=j;
		  if (j<min_y)
		    min_y=j;
		  
		if (idle)
		    idle=0;
		  }
		}
	}
  }
  else if (rotation==270)
  {
    	for (j = 0; j < scrinfo.yres; j++)
	{
	  
		for (i = 0; i < scrinfo.xres; i++)
		{
		    if(a[(scrinfo.yres - 1 - j + i * scrinfo.yres)] != b[ scrinfo.yres * scrinfo.xres - (i + j * scrinfo.xres) + offset ])
		    {
		      a[(scrinfo.yres - 1 - j + i * scrinfo.yres)] = b[ scrinfo.yres * scrinfo.xres - (i + j * scrinfo.xres) + offset ];
	          if (i>max_y)
		    max_y=i;
		  if (i<min_y)
		    min_y=i;
		  
		  if (j>max_x)
		    max_x=j;
		  if (j<min_x)
		    min_x=j;
		  
		  if (idle)
		    idle=0;
		  }
		}
	}
		      
  }
  
memcpy(vncbuf,a,vncscr->width*vncscr->height*scrinfo.bits_per_pixel/CHAR_BIT);

  
  if (min_x!=9999 && min_y!=9999 && max_x!=-1 && max_y!=-1)
  {
  min_x--;
  max_x++;
  min_y--;
  max_y++;
     
  rfbMarkRectAsModified(vncscr, min_x, min_y, max_x, max_y);
  rfbProcessEvents(vncscr, 10000);
  }  
  
//      rfbMarkRectAsModified(vncscr, 0, 0, scrinfo.yres,scrinfo.xres);
//      rfbProcessEvents(vncscr, 10000);
 
  if (idle)
  {
    standby=standby+1;
    
    if (standby>30)
      rfbProcessEvents(vncscr, 1000000);
    else
      rfbProcessEvents(vncscr, 100000);
    
//     printf("standby %d xoff=%d yoff=%d\n",standby,scrinfo.xres,scrinfo.yres);
    change=0;
  }
  else
  {
    change=change+1;
    standby=0;
    rfbProcessEvents(vncscr, 100000);
//     printf("change %d\tmin_x=%d max_x=%d min_y=%d max_y=%d xoff=%d yoff=%d\n",change,min_x,max_x,min_y,max_y,scrinfo.xoffset,scrinfo.yoffset);
  } 
}