Capturing Video from Web-camera on Windows 7 and 8 by using Media Foundation

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#ifndef __OPENCV_GPU_PERF_UTILITY_HPP__
#define __OPENCV_GPU_PERF_UTILITY_HPP__

#include "opencv2/core/core.hpp"
#include "opencv2/highgui/highgui.hpp"
#include "opencv2/imgproc/imgproc.hpp"
#include "opencv2/ts/ts_perf.hpp"

namespace perf
{
    #define ALL_BORDER_MODES BorderMode::all()
    #define ALL_INTERPOLATIONS Interpolation::all()

    CV_ENUM(BorderMode, BORDER_REFLECT101, BORDER_REPLICATE, BORDER_CONSTANT, BORDER_REFLECT, BORDER_WRAP)
    CV_ENUM(Interpolation, INTER_NEAREST, INTER_LINEAR, INTER_CUBIC, INTER_AREA)
    CV_ENUM(NormType, NORM_INF, NORM_L1, NORM_L2, NORM_HAMMING, NORM_MINMAX)

    enum { Gray = 1, TwoChannel = 2, BGR = 3, BGRA = 4 };
    CV_ENUM(MatCn, Gray, TwoChannel, BGR, BGRA)

    #define GPU_CHANNELS_1_3_4 testing::Values(MatCn(Gray), MatCn(BGR), MatCn(BGRA))
    #define GPU_CHANNELS_1_3 testing::Values(MatCn(Gray), MatCn(BGR))

    #define GET_PARAM(k) std::tr1::get< k >(GetParam())

    #define DEF_PARAM_TEST(name, ...) typedef ::perf::TestBaseWithParam< std::tr1::tuple< __VA_ARGS__ > > name
    #define DEF_PARAM_TEST_1(name, param_type) typedef ::perf::TestBaseWithParam< param_type > name

    DEF_PARAM_TEST_1(Sz, cv::Size);
    typedef perf::Size_MatType Sz_Type;
    DEF_PARAM_TEST(Sz_Depth, cv::Size, perf::MatDepth);
    DEF_PARAM_TEST(Sz_Depth_Cn, cv::Size, perf::MatDepth, MatCn);

    #define GPU_TYPICAL_MAT_SIZES testing::Values(perf::sz720p, perf::szSXGA, perf::sz1080p)

    #define FAIL_NO_CPU() FAIL() << "No such CPU implementation analogy"

    #define GPU_SANITY_CHECK(mat, ...) \
        do{ \
            cv::Mat gpu_##mat(mat); \
            SANITY_CHECK(gpu_##mat, ## __VA_ARGS__); \
        } while(0)

    #define CPU_SANITY_CHECK(mat, ...) \
        do{ \
            cv::Mat cpu_##mat(mat); \
            SANITY_CHECK(cpu_##mat, ## __VA_ARGS__); \
        } while(0)

    CV_EXPORTS cv::Mat readImage(const std::string& fileName, int flags = cv::IMREAD_COLOR);

    struct CvtColorInfo
    {
        int scn;
        int dcn;
        int code;

        CvtColorInfo() {}
        explicit CvtColorInfo(int scn_, int dcn_, int code_) : scn(scn_), dcn(dcn_), code(code_) {}
    };
    CV_EXPORTS void PrintTo(const CvtColorInfo& info, std::ostream* os);

    CV_EXPORTS void printCudaInfo();

    CV_EXPORTS void sortKeyPoints(std::vector<cv::KeyPoint>& keypoints, cv::InputOutputArray _descriptors = cv::noArray());
}

#endif // __OPENCV_GPU_PERF_UTILITY_HPP__