// Copyright (c) 2024 PaddlePaddle Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#pragma once

#include "paddle/phi/backends/all_context.h"
#include "paddle/phi/core/tensor_utils.h"

namespace phi {
namespace math {
template <typename DeviceContext, typename T>
class Unpool2dMaxFunctor {
 public:
  void operator()(const DeviceContext& dev_ctx,
                  const DenseTensor& input,
                  const DenseTensor& indices,
                  DenseTensor* output);
};
template <typename DeviceContext, class T>
class Unpool2dMaxGradFunctor {
 public:
  void operator()(const DeviceContext& dev_ctx,
                  const DenseTensor& input,
                  const DenseTensor& indices,
                  const DenseTensor& output,
                  const DenseTensor& output_grad,
                  DenseTensor* input_grad);
};

template <typename DeviceContext, typename T>
class Unpool3dMaxFunctor {
 public:
  void operator()(const DeviceContext& dev_ctx,
                  const DenseTensor& input,
                  const DenseTensor& indices,
                  DenseTensor* output);
};
template <typename DeviceContext, class T>
class Unpool3dMaxGradFunctor {
 public:
  void operator()(const DeviceContext& dev_ctx,
                  const DenseTensor& input,
                  const DenseTensor& indices,
                  const DenseTensor& output,
                  const DenseTensor& output_grad,
                  DenseTensor* input_grad);
};
}  // namespace math
}  // namespace phi