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eyefinder/windows/FilterSrc/helperfunctions.h

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#include <windows.h>
//#include "mpisearchBinary.h"
#include "mpisearchFaceDetector.h"

// ================================================================

inline void GreyScaleFlipVideo(int width, int height, int np, RGBTRIPLE *rgbpix, RImage<float> & pixels)
{
        RGBTRIPLE *source;
        unsigned char *sp;
        float *dest;

        // convert image to grayscale and out of directshow coordinates 
        for (int y=0; y < height; y++) {
                source = rgbpix + (np - (y+1) * width);
                sp = (unsigned char *) source;
                dest = pixels.array + width*y;
                for (int x = 0; x < width; x++) {
                        *dest++ = (float)(sp[2] + sp[1]*6 + sp[0]*3);
                        sp += 3;
                }
        }

} 

// ================================================================

inline void SetRGBRed(int x, int y, int cxImage, int cyImage, int failedCycles, RGBTRIPLE *prgb){
        float Decay = (10 - failedCycles)*.1;
#define MPIRedDecay(x)                                          \
  (x)->rgbtRed = (unsigned char) floor((255 - (x)->rgbtRed)*Decay + (x)->rgbtRed);              \
  (x)->rgbtBlue = (unsigned char) ceil((x)->rgbtBlue - ((x)->rgbtBlue - 0)*Decay);          \
  (x)->rgbtGreen = (unsigned char) ceil((x)->rgbtGreen - ((x)->rgbtGreen - 0)*Decay);

        MPIRedDecay( prgb + (x + cxImage*((cyImage-1) - y)));
}


inline void SetRGBBlue(int x, int y, int cxImage, int cyImage, int failedCycles, RGBTRIPLE *prgb){
        float Decay = (10 - failedCycles)*.1;
#define MPIBlueDecay(x)                                         \
  (x)->rgbtRed = (unsigned char) ceil((x)->rgbtRed - ((x)->rgbtRed - 0)*Decay);         \
  (x)->rgbtBlue = (unsigned char) floor((255 - (x)->rgbtBlue)*Decay + (x)->rgbtBlue);       \
  (x)->rgbtGreen = (unsigned char) ceil((x)->rgbtGreen - ((x)->rgbtGreen - 0)*Decay);

        MPIBlueDecay( prgb + (x + cxImage*((cyImage-1) - y)));
}


inline void SetRGBWhite(int x, int y, int cxImage, int cyImage, int failedCycles, RGBTRIPLE *prgb){
        float Decay = (10 - failedCycles)*.1;
#define MPIWhiteDecay(x)                                                \
  (x)->rgbtRed = (unsigned char) floor((255 - (x)->rgbtRed)*Decay + (x)->rgbtRed);              \
  (x)->rgbtBlue = (unsigned char) floor((255 - (x)->rgbtBlue)*Decay + (x)->rgbtBlue);       \
  (x)->rgbtGreen = (unsigned char) floor((255 - (x)->rgbtGreen)*Decay + (x)->rgbtGreen);

        MPIWhiteDecay( prgb + (x + cxImage*((cyImage-1) - y)));
}

// ================================================================

inline void DrawBoxes(RGBTRIPLE *prgb, FaceBoxList &faces, int failedCycles, int cxImage, int cyImage)
{  
        int leftX, rightX, topY, bottomY, x, y;
        bool firstface = true;
        for (list<Square>::iterator it = faces.begin(); it != faces.end(); it++) {
                Square &curface = *it;
                if (curface.size > 0) {
                        leftX = curface.x;
                        rightX = leftX + curface.size;
                        topY = curface.y;
                        bottomY = topY + curface.size - 1;

                        for(x = leftX; x <= rightX; ++x){
                                if (firstface) {
                                        SetRGBRed(x, topY, cxImage, cyImage, failedCycles, prgb);
                                        SetRGBRed(x, bottomY, cxImage, cyImage, failedCycles, prgb);
                                } else {
                                        SetRGBBlue(x, topY, cxImage, cyImage, failedCycles, prgb);
                                        SetRGBBlue(x, bottomY, cxImage, cyImage, failedCycles, prgb);
                                }
                        }
                        for(y = topY; y < bottomY; ++y){
                                if (firstface) {
                                        SetRGBRed(leftX, y, cxImage, cyImage, failedCycles, prgb);
                                        SetRGBRed(rightX, y, cxImage, cyImage, failedCycles, prgb);
                                } else {
                                        SetRGBBlue(leftX, y, cxImage, cyImage, failedCycles, prgb);
                                        SetRGBBlue(rightX, y, cxImage, cyImage, failedCycles, prgb);
                                }
                        }
                        firstface = false;
                }
        }
}

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