text: /*
   * Copyright (c) 2016, 2017 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_NEHOGDESCRIPTOR_H__
  #define __ARM_COMPUTE_NEHOGDESCRIPTOR_H__
  
  #include "arm_compute/core/NEON/kernels/NEHOGDescriptorKernel.h"
  #include "arm_compute/runtime/IFunction.h"
  #include "arm_compute/runtime/NEON/functions/NEHOGGradient.h"
  #include "arm_compute/runtime/Tensor.h"
  
  namespace arm_compute
  {
  class IHOG;
  /** Basic function to calculate HOG descriptor. This function calls the following NEON kernels:
   *
   * -# @ref NEHOGGradient
   * -# @ref NEHOGOrientationBinningKernel
   * -# @ref NEHOGBlockNormalizationKernel
   *
   */
  class NEHOGDescriptor : public IFunction
  {
  public:
      /** Default constructor */
      NEHOGDescriptor();
      /** Initialise the function's source, destination, HOG data-object and border mode
       *
       * @param[in, out] input                 Input tensor. Data type supported: U8
       *                                       (Written to only for @p border_mode != UNDEFINED)
       * @param[out]     output                Output tensor which stores the HOG descriptor. DataType supported: F32. The number of channels is equal to the number of histogram bins per block
       * @param[in]      hog                   HOG data object which describes the HOG descriptor
       * @param[in]      border_mode           Border mode to use.
       * @param[in]      constant_border_value (Optional) Constant value to use for borders if border_mode is set to CONSTANT.
       */
      void configure(ITensor *input, ITensor *output, const IHOG *hog, BorderMode border_mode, uint8_t constant_border_value = 0);
  
      // Inherited method overridden:
      void run() override;
  
  private:
      NEHOGGradient                 _gradient;
      NEHOGOrientationBinningKernel _orient_bin;
      NEHOGBlockNormalizationKernel _block_norm;
      Tensor                        _mag;
      Tensor                        _phase;
      Tensor                        _hog_space;
  };
  }
  
  #endif /* __ARM_COMPUTE_NEHOGDESCRIPTOR_H__ */
  