#include <ipp.h>

#include "opencv2/imgproc/imgproc_c.h"
#include "opencv2/highgui/highgui_c.h"

const int wSmall = 352, hSmall = 288;
const int wLarge = 800, hLarge = 600;

int main()
{
    int srcRGBstep, srcYUVstep, dstYUVstep, dstRGBstep, srcYCbCrstep, dstYCbCrstep;
    Ipp8u *srcRGB, *srcYUV, *dstYUV, *dstRGB, *srcYCbCr, *dstYCbCr;
    IppiSize smallSize, largeSize;
    IppiRect srcroi;
    IppStatus st;
    
    srcRGBstep = wSmall * 3;
    srcRGB = (Ipp8u*)malloc(srcRGBstep * hSmall);
    srcYUVstep = wSmall * 2;
    srcYUV = (Ipp8u*)malloc(srcYUVstep * hSmall);
    dstYUVstep = wLarge * 2;
    dstYUV = (Ipp8u*)malloc(dstYUVstep * hLarge);
    dstRGBstep = wLarge * 3;
    dstRGB = (Ipp8u*)malloc(dstRGBstep * hLarge);
    srcYCbCrstep = wSmall * 2;
    srcYCbCr = (Ipp8u*)malloc(srcYCbCrstep * hSmall);
    dstYCbCrstep = wLarge * 2;
    dstYCbCr = (Ipp8u*)malloc(dstYCbCrstep * hLarge);
    
    smallSize.width = wSmall; smallSize.height = hSmall;
    largeSize.width = wLarge; largeSize.height = hLarge;
    
    srcroi.width = wSmall; srcroi.height = hSmall; srcroi.x = srcroi.y = 0;

    ippiImageJaehne_8u_C3R(srcRGB, srcRGBstep, smallSize);

    st = ippiRGBToCbYCr422_8u_C3C2R(srcRGB, srcRGBstep, srcYCbCr, srcYCbCrstep, smallSize);

    /* Here starts Detlev's case */
    ippiCbYCr422ToYCbCr422_8u_C2R(srcYCbCr, srcYCbCrstep, srcYUV, srcYUVstep, smallSize);
    ippiResizeYUV422_8u_C2R(srcYUV, smallSize, srcYUVstep, srcroi, dstYUV, dstYUVstep, 
                            largeSize, (double)wLarge/wSmall, (double)hLarge/hSmall, IPPI_INTER_CUBIC);
    ippiYCbCr422ToCbYCr422_8u_C2R(dstYUV, dstYUVstep, dstYCbCr, dstYCbCrstep, largeSize);
    /* End of Detlev's case */
    
    /* Visual check */
    ippiYCbCr422ToRGB_8u_C2C3R(dstYCbCr, dstYCbCrstep, dstRGB, dstRGBstep, largeSize);
    {
        IplImage *img = cvCreateImage(cvSize(wLarge, hLarge), IPL_DEPTH_8U, 3);
        ippiCopy_8u_C3R(dstRGB, dstRGBstep, (Ipp8u*)img->imageData, img->widthStep, largeSize);
        cvNamedWindow("dst", 1);
        cvShowImage("dst", img);
        cvWaitKey(0);
        cvReleaseImage(&img);
    }
    free(srcRGB); free(srcYUV); free(dstYUV); free(dstRGB);
    return 0;
}