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#include "precomp.hpp"

#ifdef HAVE_CUDA

CV_ENUM(ThreshOp, cv::THRESH_BINARY, cv::THRESH_BINARY_INV, cv::THRESH_TRUNC, cv::THRESH_TOZERO, cv::THRESH_TOZERO_INV)
#define ALL_THRESH_OPS testing::Values(ThreshOp(cv::THRESH_BINARY), ThreshOp(cv::THRESH_BINARY_INV), ThreshOp(cv::THRESH_TRUNC), ThreshOp(cv::THRESH_TOZERO), ThreshOp(cv::THRESH_TOZERO_INV))

PARAM_TEST_CASE(Threshold, cv::gpu::DeviceInfo, cv::Size, MatType, ThreshOp, UseRoi)
{
    cv::gpu::DeviceInfo devInfo;
    cv::Size size;
    int type;
    int threshOp;
    bool useRoi;

    virtual void SetUp()
    {
        devInfo = GET_PARAM(0);
        size = GET_PARAM(1);
        type = GET_PARAM(2);
        threshOp = GET_PARAM(3);
        useRoi = GET_PARAM(4);

        cv::gpu::setDevice(devInfo.deviceID());
    }
};

TEST_P(Threshold, Accuracy)
{
    cv::Mat src = randomMat(size, type);
    double maxVal = randomDouble(20.0, 127.0);
    double thresh = randomDouble(0.0, maxVal);

    cv::gpu::GpuMat dst = createMat(src.size(), src.type(), useRoi);
    cv::gpu::threshold(loadMat(src, useRoi), dst, thresh, maxVal, threshOp);

    cv::Mat dst_gold;
    cv::threshold(src, dst_gold, thresh, maxVal, threshOp);

    EXPECT_MAT_NEAR(dst_gold, dst, 0.0);
}

INSTANTIATE_TEST_CASE_P(GPU_ImgProc, Threshold, testing::Combine(
    ALL_DEVICES,
    DIFFERENT_SIZES,
    testing::Values(MatType(CV_8UC1), MatType(CV_16SC1), MatType(CV_32FC1)),
    ALL_THRESH_OPS,
    WHOLE_SUBMAT));

#endif // HAVE_CUDA