Intelligent Screen Saver

// This is the main DLL file.
#pragma managed
#include "stdafx.h"
#include "FaceLocator.h"
#include <stdio.h>

#define FrontalFaceCascade "haarcascade_frontalface_alt.xml"
#define ProfileFaceCascade "haarcascade_profileface.xml"

FaceLocator::FaceLocator(System::String* appPath)
{
	faceMode = 0;
	strApplicationPath = appPath;
	FrontalFaceDetector = new ObjectLocator();
	ProfileFaceDetector = new ObjectLocator();
	
	CurrentFaceDetector = FrontalFaceDetector;
}

FaceLocator::~FaceLocator(void)
{	
	delete FrontalFaceDetector;	
	delete ProfileFaceDetector;	
}

int FaceLocator::SetFaceMode(int Mode)
{
	faceMode = Mode;
	if(Mode==0)
		CurrentFaceDetector = FrontalFaceDetector;
	else
		CurrentFaceDetector = ProfileFaceDetector;

	return faceMode;
}

void FaceLocator::InitCascades()
{
	char *c, *chrAppPath;

	chrAppPath = (char*)(void*)System::Runtime
		::InteropServices::Marshal::StringToHGlobalAnsi(strApplicationPath);
	c = strcat(chrAppPath,FrontalFaceCascade);	
	FrontalFaceDetector->InitObjectDetect(c);
	System::Runtime::InteropServices::Marshal::FreeHGlobal(chrAppPath);

	chrAppPath = (char*)(void*)System::Runtime
		::InteropServices::Marshal::StringToHGlobalAnsi(strApplicationPath);
	c = strcat(chrAppPath,ProfileFaceCascade);	
	ProfileFaceDetector->InitObjectDetect(c);
	System::Runtime::InteropServices::Marshal::FreeHGlobal(chrAppPath);
}


int FaceLocator::DetectFaces(IplImage* inputImage)
{
	if(InitFlag==0) 
	{
		InitFlag++;		
		CurrentFaceDetector->InitImageStorage(inputImage->width,inputImage->height, scale);
		InitCascades();	
		lastHeight = inputImage->height;
		lastWidth = inputImage->width;
	}	
	else if((lastHeight!=inputImage->height) || (lastWidth!=inputImage->width))
	{	
		CurrentFaceDetector->InitImageStorage(inputImage->width,inputImage->height, scale);
		InitCascades();
		lastHeight = inputImage->height;
		lastWidth = inputImage->width;
	}
	
	CurrentFaceDetector->ManagedImagetoUnManagedImage((inputImage));	
	CurrentFaceDetector->ImagePreProcessForFaceDetection();
	//CurrentFaceDetector->UnSetFaceROI();
	int FNum = CurrentFaceDetector->DetectObjects();
	
	return FNum;
	//return 0;
}

int FaceLocator::GetFaceCordinates(int index, int &lx, int &ly, int &rx, int &ry)
{
	int lx1, ly1, rx1, ry1;
	CurrentFaceDetector->GetObjectCoordinates(index, lx1, ly1, rx1, ry1);	
	lx = lx1;
	ly = ly1;
	rx = rx1;
	ry = ry1;
	return 0;
}