Pooling.cpp

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/*
 * Copyright (c) 2018 Samsung Electronics Co., Ltd. All Rights Reserved
 * Copyright (C) 2017 The Android Open Source Project
 *
 * 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.
 */
 
#include "Pooling.h"
#include "Spatial.h"
 
#include "Assert.h"
 
bool genericPoolingPrepare(const Shape &input, int32_t padding_left, int32_t padding_right,
                           int32_t padding_top, int32_t padding_bottom, int32_t stride_width,
                           int32_t stride_height, int32_t filter_width, int32_t filter_height,
                           Shape *output)
{
  ASSERT(getNumberOfDimensions(input) == 4);
 
  uint32_t batches = getSizeOfDimension(input, 0);
  uint32_t width = getSizeOfDimension(input, 2);
  uint32_t height = getSizeOfDimension(input, 1);
  uint32_t channels_out = getSizeOfDimension(input, 3);
 
  uint32_t outWidth =
      computeOutSize(width, filter_width, stride_width, padding_left, padding_right);
  uint32_t outHeight =
      computeOutSize(height, filter_height, stride_height, padding_top, padding_bottom);
 
  output->type = input.type;
  output->dimensions = {batches, outHeight, outWidth, channels_out};
  return true;
}