text: /*
   * Copyright (c) 2019-2020 Arm Limited.
   *
   * SPDX-License-Identifier: MIT
   *
   * Permission is hereby granted, free of charge, to any person obtaining a copy
   * of this software and associated documentation files (the "Software"), to
   * deal in the Software without restriction, including without limitation the
   * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
   * sell copies of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in all
   * copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
   * SOFTWARE.
   */
  #ifndef ARM_COMPUTE_NESPACETOBATCHLAYERKERNEL_H
  #define ARM_COMPUTE_NESPACETOBATCHLAYERKERNEL_H
  
  #include "arm_compute/core/Types.h"
  #include "src/core/NEON/INEKernel.h"
  
  namespace arm_compute
  {
  // Forward declaration
  class ITensor;
  
  /** Interface for the space to batch kernel */
  class NESpaceToBatchLayerKernel : public INEKernel
  {
  public:
      const char *name() const override
      {
          return "NESpaceToBatchLayerKernel";
      }
      /** Default constructor */
      NESpaceToBatchLayerKernel();
      /** Prevent instances of this class from being copied (As this class contains pointers) */
      NESpaceToBatchLayerKernel(const NESpaceToBatchLayerKernel &) = delete;
      /** Prevent instances of this class from being copied (As this class contains pointers) */
      NESpaceToBatchLayerKernel &operator=(const NESpaceToBatchLayerKernel &) = delete;
      /** Allow instances of this class to be moved */
      NESpaceToBatchLayerKernel(NESpaceToBatchLayerKernel &&) = default;
      /** Allow instances of this class to be moved */
      NESpaceToBatchLayerKernel &operator=(NESpaceToBatchLayerKernel &&) = default;
      /** Default destructor */
      ~NESpaceToBatchLayerKernel() = default;
      /** Initialise the kernel's inputs and output.
       *
       * @param[in]  input       Tensor input. Supported tensor rank: 4. Data types supported: All.
       * @param[in]  block_shape 1-D tensor with shape [M]. Supported M: 2. Data types supported: S32
       * @param[in]  paddings    2-D tensor with shape [2, M] (First dimension is the fastest-changing dimension). Supported M: 2. Data types supported: S32
       * @param[out] output      Tensor output. Data types supported: same as @p input
       */
      void configure(const ITensor *input, const ITensor *block_shape, const ITensor *paddings, ITensor *output);
      /** Initialise the kernel's input and output. (Static block shape and paddings)
       *
       * @param[in]  input         Tensor input. Supported tensor rank: 4. Data types supported: All.
       * @param[in]  block_shape_x Block shape x value.
       * @param[in]  block_shape_y Block shape y value.
       * @param[in]  padding_left  The padding at the beginning of every dimension of the output tensor.
       * @param[in]  padding_right The padding at the end of every dimension of the output tensor.
       * @param[out] output        Tensor output. Data types supported: same as @p input
       */
      void configure(const ITensor *input, const int block_shape_x, const int block_shape_y, const Size2D &padding_left, const Size2D &padding_right, ITensor *output);
      /** Static function to check if given info will lead to a valid configuration of @ref NESpaceToBatchLayerKernel
       *
       * @param[in] input       Tensor input. Supported tensor rank: 4. Data types supported: All.
       * @param[in] block_shape 1-D tensor with shape [M]. Supported M: 2. Data types supported: S32
       * @param[in] paddings    2-D tensor with shape [2, M] (First dimension is the fastest-changing dimension). Supported M: 2. Data types supported: S32
       * @param[in] output      Tensor output. Data types supported: same as @p input
       *
       * @return a status
       */
      static Status validate(const ITensorInfo *input, const ITensorInfo *block_shape, const ITensorInfo *paddings, const ITensorInfo *output);
      /** Static function to check if given info will lead to a valid configuration of @ref NESpaceToBatchLayerKernel (Static block shape and paddings)
       *
       * @param[in] input         Tensor input. Supported tensor rank: 4. Data types supported: All.
       * @param[in] block_shape_x Block shape x value.
       * @param[in] block_shape_y Block shape y value.
       * @param[in] padding_left  The padding at the beginning of every dimension of the output tensor.
       * @param[in] padding_right The padding at the end of every dimension of the output tensor.
       * @param[in] output        Tensor output. Data types supported: same as @p input
       *
       * @return a status
       */
      static Status validate(const ITensorInfo *input, const int block_shape_x, const int block_shape_y, const Size2D &padding_left, const Size2D &padding_right, const ITensorInfo *output);
  
      // Inherited methods overridden:
      void run(const Window &window, const ThreadInfo &info) override;
  
  private:
      const ITensor *_input;       /**< Source tensor */
      const ITensor *_block_shape; /**< Block shape tensor for dynamic evaluation */
      const ITensor *_paddings;    /**< Paddings tensor for dynamic evaluation */
      ITensor       *_output;      /**< Destination tensor */
      DataLayout     _data_layout; /**< Data layout to be used at run-time */
  
      Size2D _padding_left;
      int    _block_shape_x;
      int    _block_shape_y;
  };
  } // namespace arm_compute
  #endif /* ARM_COMPUTE_NESPACETOBATCHLAYERKERNEL_H */
  