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#include "perf_precomp.hpp"
#include "opencv2/stitching/warpers.hpp"
#include "opencv2/ts/ocl_perf.hpp"

#ifdef HAVE_OPENCL

namespace cvtest {
namespace ocl {

///////////////////////// Stitching Warpers ///////////////////////////

enum
{
    SphericalWarperType = 0,
    CylindricalWarperType = 1,
    PlaneWarperType = 2
};

class WarperBase
{
public:
    explicit WarperBase(int type)
    {
        Ptr<WarperCreator> creator;
        if (cv::ocl::useOpenCL())
        {
            if (type == SphericalWarperType)
                creator = makePtr<SphericalWarperOcl>();
            else if (type == CylindricalWarperType)
                creator = makePtr<CylindricalWarperOcl>();
            else if (type == PlaneWarperType)
                creator = makePtr<PlaneWarperOcl>();
        }
        else
        {
            if (type == SphericalWarperType)
                creator = makePtr<SphericalWarper>();
            else if (type == CylindricalWarperType)
                creator = makePtr<CylindricalWarper>();
            else if (type == PlaneWarperType)
                creator = makePtr<PlaneWarper>();
        }
        CV_Assert(!creator.empty());

        warper = creator->create(2.0);

        K = Mat::eye(3, 3, CV_32FC1);
        R = Mat::eye(3, 3, CV_32FC1);
    }

    Rect buildMaps(Size src_size, OutputArray xmap, OutputArray ymap) const
    {
        return warper->buildMaps(src_size, K, R, xmap, ymap);
    }

    Point warp(InputArray src, int interp_mode, int border_mode, OutputArray dst) const
    {
        return warper->warp(src, K, R, interp_mode, border_mode, dst);
    }

private:
    Ptr<detail::RotationWarper> warper;
    Mat K, R;
};

CV_ENUM(WarperType, SphericalWarperType, CylindricalWarperType, PlaneWarperType)

typedef tuple<Size, WarperType> StitchingWarpersParams;
typedef TestBaseWithParam<StitchingWarpersParams> StitchingWarpersFixture;

OCL_PERF_TEST_P(StitchingWarpersFixture, StitchingWarpers_BuildMaps,
                ::testing::Combine(OCL_TEST_SIZES, WarperType::all()))
{
    const StitchingWarpersParams params = GetParam();
    const Size srcSize = get<0>(params);
    const WarperBase warper(get<1>(params));

    UMat src(srcSize, CV_32FC1), xmap(srcSize, CV_32FC1), ymap(srcSize, CV_32FC1);
    declare.in(src, WARMUP_RNG).out(xmap, ymap);

    OCL_TEST_CYCLE() warper.buildMaps(srcSize, xmap, ymap);

    SANITY_CHECK(xmap, 1e-3);
    SANITY_CHECK(ymap, 1e-3);
}

OCL_PERF_TEST_P(StitchingWarpersFixture, StitchingWarpers_Warp,
                ::testing::Combine(OCL_TEST_SIZES, WarperType::all()))
{
    const StitchingWarpersParams params = GetParam();
    const Size srcSize = get<0>(params);
    const WarperBase warper(get<1>(params));

    UMat src(srcSize, CV_32FC1), dst(srcSize, CV_32FC1);
    declare.in(src, WARMUP_RNG).out(dst);

    OCL_TEST_CYCLE() warper.warp(src, INTER_LINEAR, BORDER_REPLICATE, dst);

    SANITY_CHECK(dst, 1e-5);
}

} } // namespace cvtest::ocl

#endif // HAVE_OPENCL