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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 or S16.
+ * @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.
+ */
+ 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 or S16.
+ * @param[in] min_max Buffer of 2 elements which contains the min value at position 0 and the max value at position 1. Data type supported: S32
+ * @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. */
+};
+}
+#endif /*__ARM_COMPUTE_CLMINMAXLOCATIONKERNEL_H__ */