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/*
* Copyright (c) 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_CLMINMAXLOCATIONKERNEL_H__
#define __ARM_COMPUTE_CLMINMAXLOCATIONKERNEL_H__
#include "arm_compute/core/CL/ICLArray.h"
#include "arm_compute/core/CL/ICLKernel.h"
#include <array>
namespace arm_compute
{
class ICLTensor;
using ICLImage = ICLTensor;
/** Interface for the kernel to perform min max search on an image.
*/
class CLMinMaxKernel : public ICLKernel
{
public:
/** Default constructor */
CLMinMaxKernel();
/** Prevent instances of this class from being copied (As this class contains pointers) */
CLMinMaxKernel(const CLMinMaxKernel &) = delete;
/** Prevent instances of this class from being copied (As this class contains pointers) */
CLMinMaxKernel &operator=(const CLMinMaxKernel &) = delete;
/** Allow instances of this class to be moved */
CLMinMaxKernel(CLMinMaxKernel &&) = default;
/** Allow instances of this class to be moved */
CLMinMaxKernel &operator=(CLMinMaxKernel &&) = default;
/** Initialise the kernel's input and output.
*
* @param[in] input Input Image. Data types supported: U8/S16/F32.
* @param[out] min_max Buffer of 2 elements to store the min value at position 0 and the max value at position 1. Data type supported: S32 if input type is U8/S16, F32 if input type is F32.
*/
void configure(const ICLImage *input, cl::Buffer *min_max);
// Inherited methods overridden:
void run(const Window &window, cl::CommandQueue &queue) override;
private:
const ICLTensor *_input; /**< Input image. */
cl::Buffer *_min_max; /**< Minimum/maximum value. */
std::array<int, 2> _data_type_max_min; /**< Maximum and minimum data type value respectively. */
};
/** Interface for the kernel to find min max locations of an image.
*/
class CLMinMaxLocationKernel : public ICLKernel
{
public:
/** Constructor */
CLMinMaxLocationKernel();
/** Prevent instances of this class from being copied (As this class contains pointers) */
CLMinMaxLocationKernel(const CLMinMaxLocationKernel &) = delete;
/** Prevent instances of this class from being copied (As this class contains pointers) */
CLMinMaxLocationKernel &operator=(const CLMinMaxLocationKernel &) = delete;
/** Allow instances of this class to be moved */
CLMinMaxLocationKernel(CLMinMaxLocationKernel &&) = default;
/** Allow instances of this class to be moved */
CLMinMaxLocationKernel &operator=(CLMinMaxLocationKernel &&) = default;
/** Initialise the kernel's input and outputs.
*
* @note When locations of min and max occurrences are requested, the reported number of locations is limited to the given array size.
*
* @param[in] input Input image. Data types supported: U8/S16/F32.
* @param[out] min_max Buffer of 2 elements to store the min value at position 0 and the max value at position 1. Data type supported: S32 if input type is U8/S16, F32 if input type is F32.
* @param[out] min_max_count Buffer of 2 elements to store the min value occurrences at position 0 and the max value occurrences at position 1. Data type supported: S32
* @param[out] min_loc (Optional) Array of Coordinates2D used to store minimum value locations.
* @param[out] max_loc (Optional) Array of Coordinates2D used to store maximum value locations.
*/
void configure(const ICLImage *input, cl::Buffer *min_max, cl::Buffer *min_max_count,
ICLCoordinates2DArray *min_loc = nullptr, ICLCoordinates2DArray *max_loc = nullptr);
// Inherited methods overridden:
void run(const Window &window, cl::CommandQueue &queue) override;
private:
const ICLImage *_input; /**< Input image. */
cl::Buffer *_min_max_count; /**< Minimum/maximum value occurrences. */
};
} // namespace arm_compute
#endif /*__ARM_COMPUTE_CLMINMAXLOCATIONKERNEL_H__ */
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