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#ifndef __OPENCV_CORE_CUDALEGACY_PRIVATE_HPP__
#define __OPENCV_CORE_CUDALEGACY_PRIVATE_HPP__

#ifndef __OPENCV_BUILD
#  error this is a private header which should not be used from outside of the OpenCV library
#endif

#include "opencv2/core/private.cuda.hpp"

#ifndef HAVE_CUDA
#  error cudalegacy module requires CUDA
#endif

#include "opencv2/cudalegacy.hpp"

//! @cond IGNORED

namespace cv { namespace cuda
{
    class NppStStreamHandler
    {
    public:
        inline explicit NppStStreamHandler(cudaStream_t newStream = 0)
        {
            oldStream = nppStSetActiveCUDAstream(newStream);
        }

        inline ~NppStStreamHandler()
        {
            nppStSetActiveCUDAstream(oldStream);
        }

    private:
        cudaStream_t oldStream;
    };

    CV_EXPORTS cv::String getNcvErrorMessage(int code);

    static inline void checkNcvError(int err, const char* file, const int line, const char* func)
    {
        if (NCV_SUCCESS != err)
        {
            cv::String msg = getNcvErrorMessage(err);
            cv::error(cv::Error::GpuApiCallError, msg, func, file, line);
        }
    }
}}

#define ncvSafeCall(expr)  cv::cuda::checkNcvError(expr, __FILE__, __LINE__, CV_Func)

//! @endcond

#endif // __OPENCV_CORE_CUDALEGACY_PRIVATE_HPP__
