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#pragma once

#ifndef OPENCV_CUDEV_GRID_PYRAMIDS_HPP
#define OPENCV_CUDEV_GRID_PYRAMIDS_HPP

#include "../common.hpp"
#include "../ptr2d/traits.hpp"
#include "../ptr2d/gpumat.hpp"
#include "../ptr2d/extrapolation.hpp"
#include "detail/pyr_down.hpp"
#include "detail/pyr_up.hpp"

namespace cv { namespace cudev {

//! @addtogroup cudev
//! @{

template <class Brd, class SrcPtr, typename DstType>
__host__ void gridPyrDown_(const SrcPtr& src, GpuMat_<DstType>& dst, Stream& stream = Stream::Null())
{
    const int rows = getRows(src);
    const int cols = getCols(src);

    dst.create(divUp(rows, 2), divUp(cols, 2));

    pyramids_detail::pyrDown<Brd>(shrinkPtr(src), shrinkPtr(dst), rows, cols, dst.rows, dst.cols, StreamAccessor::getStream(stream));
}

template <class SrcPtr, typename DstType>
__host__ void gridPyrDown(const SrcPtr& src, GpuMat_<DstType>& dst, Stream& stream = Stream::Null())
{
    gridPyrDown_<BrdReflect101>(src, dst, stream);
}

template <class SrcPtr, typename DstType>
__host__ void gridPyrUp(const SrcPtr& src, GpuMat_<DstType>& dst, Stream& stream = Stream::Null())
{
    const int rows = getRows(src);
    const int cols = getCols(src);

    dst.create(rows * 2, cols * 2);

    pyramids_detail::pyrUp(shrinkPtr(src), shrinkPtr(dst), rows, cols, dst.rows, dst.cols, StreamAccessor::getStream(stream));
}

//! @}

}}

#endif
