About the usage of the C64X imglib

1.       Kernels provided in Image Library are designed to process an image, or an segment of the image. The video implementation of these kernels can be achieved by introducing a loop that applies these kernels to each individual frame in the video.

2.     This may be caused due to incorrect usage of the IMG_median_3x3 kernel.  Median 3x3 kernel expects 3 rows of image data to be passed from the application code. The code mentioned in the above post seems to currently pass just one rowe of image data to the kernel. The correct usage would be

                    /* Median filter the image (Assuming no padding )*/

                         for(i = 0; i < numLines-2; i++) {

                    /* Process only image data */
                   IMG_median_3x3_8(capFrameBuf->frame.iFrm.y1+i*capLinePitch,

                                                           720,  // Number of columns in the image data

                                                           temp_buffer+i*capLinePitch); //temp_buffer is used to store  intermediate output (Size of y frame)

   }

   /* YCtoRGB processing */

                      for(i = 0; i < numLines; i++) {

                    /* Convert YUV data to RGB using IMG_ycbcr422p_rgb565*/

                      yc2rgb16(coeffs, temp_buffer + i * (capLinePitch),
                                       capFrameBuf->frame.iFrm.cb1 + (capLinePitch >> 1) * i,
                                      capFrameBuf->frame.iFrm.cr1 + (capLinePitch >> 1) * i,
                                     disFrameBuf->frame.rpFrm.buf + (disLinePitch << 1) * i,
                                     numPixels);

   }

    

    

Int i;
       for(i = 0; i < numLines; i++)
       {m_nID=DAT_copy(capFrameBuf->frame.iFrm.y1+i*capLinePitch,temp_buffer ,numPixels);

        DAT_wait(m_nID);
        ICETEKDM642PCIImageProcessReverse();
        //DAT_copy(temp_buffer,capFrameBuf->frame.iFrm.y1+i*capLinePitch,numPixels)
        }

       /* Median filter the image (Assuming no padding )*/
                      
                                                
      for(i = 0; i < numLines; i++) {
            yc2rgb16(coeffs,temp_buffer+i*capLinePitch,
                capFrameBuf->frame.iFrm.cb1 + (capLinePitch >> 1) * i,
                capFrameBuf->frame.iFrm.cr1 + (capLinePitch >> 1) * i,
                disFrameBuf->frame.rpFrm.buf + (disLinePitch << 1) * i,
                numPixels);
        }
   
       //myImageProcess();
       
        //DAT_wait(DAT_XFRID_WAITALL);
        //采集一帧视频
        FVID_exchange(capChan, &capFrameBuf);
          /* raw frame buffer         */
        //FillFrmBufRGB(&disFrameBuf->frame.rpFrm,      
    
       // EVMDM642_vDisParamsChan.imgHSizeFld1,         
        //EVMDM642_vDisParamsChan.imgVSizeFld1,            
        //frames %(EVMDM642_vDisParamsChan.imgHSizeFld1 >> 3)
        //);
        // 180.    
        //上面这段代码，是VGA显示时，显示七色滚动条的。如果想显示采集的图像，不需这个。
       
        CACHE_clean(CACHE_L2ALL, 0, 0);
        //显示一帧视频
        FVID_exchange(disChan, &disFrameBuf);       
        frames ++;             
   }

void ICETEKDM642PCIImageProcessReverse()
{
    int i;
    unsigned int *y;
 
    //for ( i=0,y=(unsigned int *)temp_buffer;i<582;i++,y++ )
    // (*y)=~(*y);
     for ( i=0,y=(unsigned int *)temp_buffer;i<582;i++,y++ )
    { if((*y)<158)
        (*y)=0;
      else 
          (*y)=255;
    }
}

I USE your example,  but it only display ane picture.so where do you defined you temp_buffer sdram isram or cache_l2

i want to know if I use is it right ?

 for(i = 0; i < numLines; i++)
       {m_nID=DAT_copy(capFrameBuf->frame.iFrm.y1+i*capLinePitch,temp_buffer ,numPixels);

        DAT_wait(m_nID);
        ICETEKDM642PCIImageProcessReverse();
       DAT_copy(temp_buffer,capFrameBuf->frame.iFrm.y1+i*capLinePitch,numPixels)

 for(i = 0; i < numLines; i++) {
            yc2rgb16(coeffs, capFrameBuf->frame.iFrm.r+i*capLinePitch,
                capFrameBuf->frame.iFrm.cb1 + (capLinePitch >> 1) * i,
                capFrameBuf->frame.iFrm.cr1 + (capLinePitch >> 1) * i,
                disFrameBuf->frame.rpFrm.buf + (disLinePitch << 1) * i,
                numPixels);
        }