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#ifndef __OPENCV_SUPERRES_HPP__
#define __OPENCV_SUPERRES_HPP__

#include "opencv2/core.hpp"

/**
  @defgroup superres Super Resolution

The Super Resolution module contains a set of functions and classes that can be used to solve the
problem of resolution enhancement. There are a few methods implemented, most of them are descibed in
the papers @cite Farsiu03 and @cite Mitzel09 .

 */

namespace cv
{
    namespace superres
    {

//! @addtogroup superres
//! @{

        CV_EXPORTS bool initModule_superres();

        class CV_EXPORTS FrameSource
        {
        public:
            virtual ~FrameSource();

            virtual void nextFrame(OutputArray frame) = 0;
            virtual void reset() = 0;
        };

        CV_EXPORTS Ptr<FrameSource> createFrameSource_Empty();

        CV_EXPORTS Ptr<FrameSource> createFrameSource_Video(const String& fileName);
        CV_EXPORTS Ptr<FrameSource> createFrameSource_Video_CUDA(const String& fileName);

        CV_EXPORTS Ptr<FrameSource> createFrameSource_Camera(int deviceId = 0);

        /** @brief Base class for Super Resolution algorithms.

        The class is only used to define the common interface for the whole family of Super Resolution
        algorithms.
         */
        class CV_EXPORTS SuperResolution : public cv::Algorithm, public FrameSource
        {
        public:
            /** @brief Set input frame source for Super Resolution algorithm.

            @param frameSource Input frame source
             */
            void setInput(const Ptr<FrameSource>& frameSource);

            /** @brief Process next frame from input and return output result.

            @param frame Output result
             */
            void nextFrame(OutputArray frame);
            void reset();

            /** @brief Clear all inner buffers.
            */
            virtual void collectGarbage();

        protected:
            SuperResolution();

            virtual void initImpl(Ptr<FrameSource>& frameSource) = 0;
            virtual void processImpl(Ptr<FrameSource>& frameSource, OutputArray output) = 0;

            bool isUmat_;

        private:
            Ptr<FrameSource> frameSource_;
            bool firstCall_;
        };

        /** @brief Create Bilateral TV-L1 Super Resolution.

        This class implements Super Resolution algorithm described in the papers @cite Farsiu03 and
        @cite Mitzel09 .

        Here are important members of the class that control the algorithm, which you can set after
        constructing the class instance:

        -   **int scale** Scale factor.
        -   **int iterations** Iteration count.
        -   **double tau** Asymptotic value of steepest descent method.
        -   **double lambda** Weight parameter to balance data term and smoothness term.
        -   **double alpha** Parameter of spacial distribution in Bilateral-TV.
        -   **int btvKernelSize** Kernel size of Bilateral-TV filter.
        -   **int blurKernelSize** Gaussian blur kernel size.
        -   **double blurSigma** Gaussian blur sigma.
        -   **int temporalAreaRadius** Radius of the temporal search area.
        -   **Ptr\<DenseOpticalFlowExt\> opticalFlow** Dense optical flow algorithm.
         */
        CV_EXPORTS Ptr<SuperResolution> createSuperResolution_BTVL1();
        CV_EXPORTS Ptr<SuperResolution> createSuperResolution_BTVL1_CUDA();
        CV_EXPORTS Ptr<SuperResolution> createSuperResolution_BTVL1_OCL();

//! @} superres

    }
}

#endif // __OPENCV_SUPERRES_HPP__