/////////////////////////////// Parallel Primitives //////////////////////////////////

/** @brief Base class for parallel data processors
*/
class CV_EXPORTS ParallelLoopBody
{
public:
    virtual ~ParallelLoopBody();
    virtual void operator() (const Range& range) const = 0;
};

/** @brief Parallel data processor
*/
CV_EXPORTS void parallel_for_(const Range& range, const ParallelLoopBody& body, double nstripes=-1.);

class ParallelLoopBodyLambdaWrapper : public ParallelLoopBody
{
private:
    std::function<void(const Range&)> m_functor;
public:
    ParallelLoopBodyLambdaWrapper(std::function<void(const Range&)> functor) :
        m_functor(functor)
    { }

    virtual void operator() (const cv::Range& range) const CV_OVERRIDE
    {
        m_functor(range);
    }
};

inline void parallel_for_(const Range& range, std::function<void(const Range&)> functor, double nstripes=-1.)
{
    parallel_for_(range, ParallelLoopBodyLambdaWrapper(functor), nstripes);
}