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_NEON_CROP_KERNEL_H
  #define ARM_COMPUTE_NEON_CROP_KERNEL_H
  
  #include "arm_compute/core/NEON/INEKernel.h"
  #include "arm_compute/core/Types.h"
  #include "arm_compute/core/Types.h"
  
  namespace arm_compute
  {
  // Forward declarations
  class ITensor;
  
  /** Interface for the kernel to perform tensor cropping */
  class NECropKernel : public INEKernel
  {
  public:
      const char *name() const override
      {
          return "NECropKernel";
      }
      /** Default constructor */
      NECropKernel();
      /** Prevent instances of this class from being copied (As this class contains pointers) */
      NECropKernel(const NECropKernel &) = delete;
      /** Prevent instances of this class from being copied (As this class contains pointers) */
      NECropKernel &operator=(const NECropKernel &) = delete;
      /** Allow instances of this class to be moved */
      NECropKernel(NECropKernel &&) = default;
      /** Allow instances of this class to be moved */
      NECropKernel &operator=(NECropKernel &&) = default;
      /** Default destructor */
      ~NECropKernel() = default;
      /** Configure kernel
       *
       * @note Supported tensor rank: up to 4
       * @note Padding not supported.
       *
       * @param[in]  input               Source tensor. Data type supported: U8/U16/S16/U32/S32/F16/F32. Data layouts supported: NHWC.
       * @param[in]  crop_boxes          Tensor containing all possible boxes used to crop the image, each represented by 4 normalized values.
       *                                 Data type supported: F32
       * @param[in]  box_ind             One dimensional tensor mapping the @p crop_box_ind to the index of the 3D image in @p input.
       *                                 Data type supported: F32
       * @param[out] output              Destination tensor. Data type supported: F32
       * @param[in]  crop_box_ind        Index of the crop box to be used from @p crop_boxes. Default is 0.
       * @param[in]  extrapolation_value Value to be used for values outside of the image. Default is 0.
       */
      void configure(const ITensor *input, const ITensor *crop_boxes, const ITensor *box_ind, ITensor *output, uint32_t crop_box_ind = 0, float extrapolation_value = 0);
  
      /** Static function to check if given info will lead to a valid configuration of @ref CLStridedSliceKernel
       *
       * @note Supported tensor rank: up to 4
       * @note Padding not supported.
       *
       * @param[in] input               Source tensor info. Data type supported: U8/U16/S16/U32/S32/F16/F32. Data layouts supported: NHWC.
       * @param[in] crop_boxes          Tensor info for tensor containing all possible boxes used to crop the image. Data type supported: F32
       * @param[in] box_ind             Tensor info for the one dimensional tensor mapping the @p crop_box_ind to the index of the 3D image
       *                                in @p input. Data type supported: F32
       * @param[in] output              Destination tensor. Data type supported: F32
       * @param[in] crop_box_ind        Index of the crop box to be used from @p crop_boxes. Default is 0.
       * @param[in] extrapolation_value Value to be used for values outside of the image. Default is 0.
       */
      static Status validate(const ITensorInfo *input, const ITensorInfo *crop_boxes, const ITensorInfo *box_ind, const ITensorInfo *output, uint32_t crop_box_ind = 0, float extrapolation_value = 0);
  
      /** Configure output tensor's shape as this can only be determined at runtime. */
      void configure_output_shape();
  
      // Inherited methods overridden:
      void run(const Window &window, const ThreadInfo &info) override;
  
      /** Function to use for in bounds crop for the particular tensor types passed to configure() */
      using InBoundsCropFunction = void(const ITensor *, const ITensor *, float *, Coordinates, int32_t, int32_t, int32_t, bool, bool);
  
  private:
      const ITensor *_input;
      const ITensor *_crop_boxes;
      const ITensor *_box_ind;
      ITensor       *_output;
  
      Coordinates _start;
      Coordinates _end;
      uint32_t    _crop_box_ind;
      float       _extrapolation_value;
      /** The number of rows out of bounds at the start and end of output. */
      std::array<uint32_t, 2> _rows_out_of_bounds;
      /** The number of columns out of bounds at the start and end of output. */
      std::array<uint32_t, 2> _cols_out_of_bounds;
  
      NECropKernel::InBoundsCropFunction *_in_bounds_crop_function;
  };
  } // namespace arm_compute
  #endif /*ARM_COMPUTE_NEON_CROP_KERNEL_H */
  