/**
 * \file dnn/src/naive/pooling/opr_impl.h
 * MegEngine is Licensed under the Apache License, Version 2.0 (the "License")
 *
 * Copyright (c) 2014-2020 Megvii Inc. All rights reserved.
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT ARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 */
#pragma once
#include "megdnn/oprs.h"
#include "src/common/utils.h"

namespace megdnn {
namespace naive {

class PoolingForwardImpl: public PoolingForward {
    public:
        using PoolingForward::PoolingForward;
        void exec(_megdnn_tensor_in src, _megdnn_tensor_out dst,
                _megdnn_workspace workspace) override;
        size_t get_workspace_in_bytes(const TensorLayout &,
                const TensorLayout &) override {
            return 0;
        }
};

class PoolingBackwardImpl : public PoolingBackward {
public:
    using PoolingBackward::PoolingBackward;
    void exec(_megdnn_tensor_in src, _megdnn_tensor_in dst,
              _megdnn_tensor_in diff, _megdnn_tensor_out grad,
              _megdnn_workspace workspace) override;
    size_t get_workspace_in_bytes(const TensorLayout&, const TensorLayout&,
                                  const TensorLayout&,
                                  const TensorLayout&) override;

private:
    WorkspaceBundle get_workspace_bundle(void* ptr, const TensorLayout&,
                                         const TensorLayout&,
                                         const TensorLayout&,
                                         const TensorLayout&) const;
};

} // namespace naive
} // namespace megdnn
// vim: syntax=cpp.doxygen