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//		Fangfang BAI, fangfang@multicorewareinc.com
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#include "precomp.hpp"
#include "opencv2/core/core.hpp"
#include <iomanip>
using namespace std;



#ifdef HAVE_OPENCL


PARAM_TEST_CASE(HOG,cv::Size,int)
{
	cv::Size winSize;
	int type;
	std::vector<cv::ocl::Info> oclinfo;

	virtual void SetUp()
	{
		winSize = GET_PARAM(0);
		type = GET_PARAM(1);
		int devnums = getDevice(oclinfo);
		CV_Assert(devnums > 0);
	}
};

TEST_P(HOG, GetDescriptors)
{
	// Load image
	cv::Mat img_rgb = readImage("D:road.png");
	ASSERT_FALSE(img_rgb.empty());

	// Convert image
	cv::Mat img;
	switch (type)
	{
	case CV_8UC1:
		cv::cvtColor(img_rgb, img, CV_BGR2GRAY);
		break;
	case CV_8UC4:
	default:
		cv::cvtColor(img_rgb, img, CV_BGR2BGRA);
		break;
	}
		// HOGs
	cv::ocl::HOGDescriptor ocl_hog;
	ocl_hog.gamma_correction = true;


	// Compute descriptor
	cv::ocl::oclMat d_descriptors;
	//down_descriptors = down_descriptors.reshape(0, down_descriptors.cols * down_descriptors.rows);

	double totalgputick=0;
	double totalgputick_kernel=0;
	double t1=0;
	double t2=0;

	for(int j = 0; j < LOOP_TIMES+1; j ++)
	{

		t1 = (double)cvGetTickCount();//gpu start1

		cv::ocl::oclMat d_img=cv::ocl::oclMat(img);//upload

		t2=(double)cvGetTickCount();//kernel
		ocl_hog.getDescriptors(d_img, ocl_hog.win_size, d_descriptors, ocl_hog.DESCR_FORMAT_COL_BY_COL);
		t2 = (double)cvGetTickCount() - t2;//kernel

		cv::Mat down_descriptors;
		d_descriptors.download(down_descriptors);

		t1 = (double)cvGetTickCount() - t1;//gpu end1

		if(j == 0)
			continue;

		totalgputick=t1+totalgputick;
		totalgputick_kernel=t2+totalgputick_kernel;	

	}

	cout << "average gpu runtime is  " << totalgputick/((double)cvGetTickFrequency()* LOOP_TIMES *1000.) << "ms" << endl;
	cout << "average gpu runtime without data transfer is  " << totalgputick_kernel/((double)cvGetTickFrequency()* LOOP_TIMES *1000.) << "ms" << endl;

	
}


TEST_P(HOG, Detect)
{
	// Load image
	cv::Mat img_rgb = readImage("D:road.png");
	ASSERT_FALSE(img_rgb.empty());

	// Convert image
	cv::Mat img;
	switch (type)
	{
	case CV_8UC1:
		cv::cvtColor(img_rgb, img, CV_BGR2GRAY);
		break;
	case CV_8UC4:
	default:
		cv::cvtColor(img_rgb, img, CV_BGR2BGRA);
		break;
	}
	
    // HOGs
	if ((winSize != cv::Size(48, 96)) && (winSize != cv::Size(64, 128)))
		winSize = cv::Size(64, 128);
	cv::ocl::HOGDescriptor ocl_hog(winSize);
	ocl_hog.gamma_correction = true;

	cv::HOGDescriptor hog;
	hog.winSize = winSize;
	hog.gammaCorrection = true;

	if (winSize.width == 48 && winSize.height == 96)
	{
		// daimler's base
		ocl_hog.setSVMDetector(ocl_hog.getPeopleDetector48x96());
		hog.setSVMDetector(hog.getDaimlerPeopleDetector());
	}
	else if (winSize.width == 64 && winSize.height == 128)
	{
		ocl_hog.setSVMDetector(ocl_hog.getPeopleDetector64x128());
		hog.setSVMDetector(hog.getDefaultPeopleDetector());
	}
	else
	{
		ocl_hog.setSVMDetector(ocl_hog.getDefaultPeopleDetector());
		hog.setSVMDetector(hog.getDefaultPeopleDetector());
	}

	// OpenCL detection
	std::vector<cv::Point> d_v_locations;

	double totalgputick=0;
	double totalgputick_kernel=0;
	double t1=0;
	double t2=0;

	for(int j = 0; j < LOOP_TIMES+1; j ++)
	{

		t1 = (double)cvGetTickCount();//gpu start1

		cv::ocl::oclMat d_img=cv::ocl::oclMat(img);//upload

		t2=(double)cvGetTickCount();//kernel
		ocl_hog.detect(d_img, d_v_locations, 0);
		t2 = (double)cvGetTickCount() - t2;//kernel
        
		t1 = (double)cvGetTickCount() - t1;//gpu end1		
		if(j == 0)
			continue;
		totalgputick=t1+totalgputick;
		totalgputick_kernel=t2+totalgputick_kernel;	

	}

	cout << "average gpu runtime is  " << totalgputick/((double)cvGetTickFrequency()* LOOP_TIMES *1000.) << "ms" << endl;
	cout << "average gpu runtime without data transfer is  " << totalgputick_kernel/((double)cvGetTickFrequency()* LOOP_TIMES *1000.) << "ms" << endl;

}


INSTANTIATE_TEST_CASE_P(OCL_ObjDetect, HOG, testing::Combine(
						testing::Values(cv::Size(64, 128), cv::Size(48, 96)),
						testing::Values(MatType(CV_8UC1), MatType(CV_8UC4))));


#endif //HAVE_OPENCL