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Diffstat (limited to 'src/core/NEON/kernels/NEMinMaxLocationKernel.h')
| -rw-r--r-- | src/core/NEON/kernels/NEMinMaxLocationKernel.h | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/src/core/NEON/kernels/NEMinMaxLocationKernel.h b/src/core/NEON/kernels/NEMinMaxLocationKernel.h new file mode 100644 index 0000000000..a24666096f --- /dev/null +++ b/src/core/NEON/kernels/NEMinMaxLocationKernel.h @@ -0,0 +1,171 @@ +/* + * Copyright (c) 2016-2020 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_NEMINMAXLOCATIONKERNEL_H +#define ARM_COMPUTE_NEMINMAXLOCATIONKERNEL_H + +#include "arm_compute/core/IArray.h" +#include "src/core/NEON/INEKernel.h" +#include "support/Mutex.h" + +#include <cstdint> + +namespace arm_compute +{ +class ITensor; +using IImage = ITensor; + +/** Interface for the kernel to perform min max search on an image. */ +class NEMinMaxKernel : public INEKernel +{ +public: + const char *name() const override + { + return "NEMinMaxKernel"; + } + /** Default constructor */ + NEMinMaxKernel(); + /** Prevent instances of this class from being copied (As this class contains pointers) */ + NEMinMaxKernel(const NEMinMaxKernel &) = delete; + /** Prevent instances of this class from being copied (As this class contains pointers) */ + NEMinMaxKernel &operator=(const NEMinMaxKernel &) = delete; + /** Prevent instances of this class from being moved (As this class contains non movable objects) */ + NEMinMaxKernel(NEMinMaxKernel &&) = delete; + /** Prevent instances of this class from being moved (As this class contains non movable objects) */ + NEMinMaxKernel &operator=(NEMinMaxKernel &&) = delete; + /** Default destructor */ + ~NEMinMaxKernel() = default; + + /** Initialise the kernel's input and outputs. + * + * @param[in] input Input Image. Data types supported: U8/S16/F32. + * @param[out] min Minimum value of image. Data types supported: S32 if input type is U8/S16, F32 if input type is F32. + * @param[out] max Maximum value of image. Data types supported: S32 if input type is U8/S16, F32 if input type is F32. + */ + void configure(const IImage *input, void *min, void *max); + /** Resets global minimum and maximum. */ + void reset(); + + // Inherited methods overridden: + void run(const Window &window, const ThreadInfo &info) override; + +private: + /** Performs the min/max algorithm on U8 images on a given window. + * + * @param win The window to run the algorithm on. + */ + void minmax_U8(Window win); + /** Performs the min/max algorithm on S16 images on a given window. + * + * @param win The window to run the algorithm on. + */ + void minmax_S16(Window win); + /** Performs the min/max algorithm on F32 images on a given window. + * + * @param win The window to run the algorithm on. + */ + void minmax_F32(Window win); + /** Common signature for all the specialised MinMax functions + * + * @param[in] window Region on which to execute the kernel. + */ + using MinMaxFunction = void (NEMinMaxKernel::*)(Window window); + /** MinMax function to use for the particular image types passed to configure() */ + MinMaxFunction _func; + /** Helper to update min/max values **/ + template <typename T> + void update_min_max(T min, T max); + + const IImage *_input; /**< Input image. */ + void *_min; /**< Minimum value. */ + void *_max; /**< Maximum value. */ + arm_compute::Mutex _mtx; /**< Mutex used for result reduction. */ +}; + +/** Interface for the kernel to find min max locations of an image. */ +class NEMinMaxLocationKernel : public INEKernel +{ +public: + const char *name() const override + { + return "NEMinMaxLocationKernel"; + } + /** Default constructor */ + NEMinMaxLocationKernel(); + /** Prevent instances of this class from being copied (As this class contains pointers) */ + NEMinMaxLocationKernel(const NEMinMaxLocationKernel &) = delete; + /** Prevent instances of this class from being copied (As this class contains pointers) */ + NEMinMaxLocationKernel &operator=(const NEMinMaxLocationKernel &) = delete; + /** Allow instances of this class to be moved */ + NEMinMaxLocationKernel(NEMinMaxLocationKernel &&) = default; + /** Allow instances of this class to be moved */ + NEMinMaxLocationKernel &operator=(NEMinMaxLocationKernel &&) = default; + /** Default destructor */ + ~NEMinMaxLocationKernel() = default; + + /** Initialise the kernel's input and outputs. + * + * @param[in] input Input Image. Data types supported: U8/S16/F32. + * @param[out] min Minimum value of image. Data types supported: S32 if input type is U8/S16, F32 if input type is F32. + * @param[out] max Maximum value of image. Data types supported: S32 if input type is U8/S16, F32 if input type is F32. + * @param[out] min_loc Array of minimum value locations. + * @param[out] max_loc Array of maximum value locations. + * @param[out] min_count Number of minimum value encounters. + * @param[out] max_count Number of maximum value encounters. + */ + void configure(const IImage *input, void *min, void *max, + ICoordinates2DArray *min_loc = nullptr, ICoordinates2DArray *max_loc = nullptr, + uint32_t *min_count = nullptr, uint32_t *max_count = nullptr); + + // Inherited methods overridden: + void run(const Window &window, const ThreadInfo &info) override; + bool is_parallelisable() const override; + +private: + /** Performs the min/max location algorithm on T type images on a given window. + * + * @param win The window to run the algorithm on. + */ + template <class T, bool count_min, bool count_max, bool loc_min, bool loc_max> + void minmax_loc(const Window &win); + /** Common signature for all the specialised MinMaxLoc functions + * + * @param[in] window Region on which to execute the kernel. + */ + using MinMaxLocFunction = void (NEMinMaxLocationKernel::*)(const Window &window); + /** MinMaxLoc function to use for the particular image types passed to configure() */ + MinMaxLocFunction _func; + /** Helper to create a function pointer table for the parameterized MinMaxLocation functions. */ + template <class T, typename> + struct create_func_table; + + const IImage *_input; /**< Input image. */ + void *_min; /**< Minimum value. */ + void *_max; /**< Maximum value. */ + uint32_t *_min_count; /**< Count of minimum value encounters. */ + uint32_t *_max_count; /**< Count of maximum value encounters. */ + ICoordinates2DArray *_min_loc; /**< Locations of minimum values. */ + ICoordinates2DArray *_max_loc; /**< Locations of maximum values. */ +}; +} // namespace arm_compute +#endif /*ARM_COMPUTE_NEMINMAXLOCATIONKERNEL_H */ |