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#ifndef __OPENCV_DNN_LAYERS_LRN_LAYER_HPP__
#define __OPENCV_DNN_LAYERS_LRN_LAYER_HPP__
#include "../precomp.hpp"
#include <opencv2/dnn/all_layers.hpp>

namespace cv
{
namespace dnn
{

class LRNLayerImpl : public LRNLayer
{
    bool useOpenCL;
    Blob buf;

    void channelNoramlization(Blob &src, Blob &dst);
    template<typename XMat>
    void channelNoramlization_(Blob &src, Blob &dst);
    bool channelNoramlization_ocl(const UMat &src, UMat &dst);

    void spatialNormalization(Blob &src, Blob &dst);
    template<typename XMat>
    void spatialNormalization_(Blob &src, Blob &dst);
    template<typename XMat>
    void sqrBoxFilter_(const XMat &src, XMat &dst);

public:

    LRNLayerImpl(int type = CHANNEL_NRM, int size = 5, double alpha = 1, double beta = 0.75, double bias = 1,
                 bool normBySize = true);
    void allocate(const std::vector<Blob*> &inputs, std::vector<Blob> &outputs);
    void forward(std::vector<Blob*> &inputs, std::vector<Blob> &outputs);
};

}
}

#endif