Dithering algorithm from pc to dm6437

Hi  everybody,

I want to transplant the Dithering algorithm to dm6437 from pc!   How can I do ?    Dithering algorithm that is urs c++ writes.  the dm6437  is use dsp/bois frame , use QDMA for capture videos, the code like follows:

    void tsk_loopback()
    { 
        TSK_sleep(2000);
        Initialize(StandardPAL);
        while(1)
        { 
           if (m_Capture.ExchangeFrameBuffer ( )) printf ("Error: Cannot capture video!\n");

            m_Display.FrameBuffer = m_Capture.FrameBuffer;
           CacheFlush( );
           if(m_Display.ExchangeFrameBuffer ( )) printf ("Error: Cannot display video!\n");
           m_Capture.FrameBuffer = m_Display.FrameBuffer;
       }
   }

 only one task!

I thought that reconstruction algorithm use C  in dm6437,   the part that many time-consuming to write assembly language. this ways has problem? who can get me some suggest?

Best regards,

An Chen.