1 /* 2 * Copyright (c) 2017-2020 Arm Limited. 3 * 4 * SPDX-License-Identifier: MIT 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a copy 7 * of this software and associated documentation files (the "Software"), to 8 * deal in the Software without restriction, including without limitation the 9 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or 10 * sell copies of the Software, and to permit persons to whom the Software is 11 * furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in all 14 * copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 22 * SOFTWARE. 23 */ 24 25 #ifndef ARM_COMPUTE_NEMINMAXLAYERKERNEL_H 26 #define ARM_COMPUTE_NEMINMAXLAYERKERNEL_H 27 28 #include "src/core/NEON/INEKernel.h" 29 #include "support/Mutex.h" 30 31 #include <cstdint> 32 33 namespace arm_compute 34 { 35 class ITensor; 36 37 /** Interface for the kernel to perform min max search on a 3D tensor. */ 38 class NEMinMaxLayerKernel : public INEKernel 39 { 40 public: name()41 const char *name() const override 42 { 43 return "NEMinMaxLayerKernel"; 44 } 45 /** Default constructor */ 46 NEMinMaxLayerKernel(); 47 /** Prevent instances of this class from being copied (As this class contains pointers) */ 48 NEMinMaxLayerKernel(const NEMinMaxLayerKernel &) = delete; 49 /** Prevent instances of this class from being copied (As this class contains pointers) */ 50 NEMinMaxLayerKernel &operator=(const NEMinMaxLayerKernel &) = delete; 51 /** Prevent instances of this class from being moved (As this class contains non movable objects) */ 52 NEMinMaxLayerKernel(NEMinMaxLayerKernel &&) = delete; 53 /** Prevent instances of this class from being moved (As this class contains non movable objects) */ 54 NEMinMaxLayerKernel &operator=(NEMinMaxLayerKernel &&) = delete; 55 /** Default destructor */ 56 ~NEMinMaxLayerKernel() = default; 57 58 /** Initialise the kernel's input and outputs. 59 * 60 * @note output[0] = minimum 61 * @note output[1] = maximum 62 * 63 * @param[in] input Input tensor with at least 3 dimensions. The dimensions over the third will be interpreted as batches. Data type supported: F32. 64 * @param[out] output Output tensor with shape [2, batches, ...] which stores the minimum and maximum value for each 3D input tensor. 65 * The dimensions over the second must match the batched dimensions of the input tensor. Data types supported: F32 66 */ 67 void configure(const ITensor *input, ITensor *output); 68 /** Static function to check if given info will lead to a valid configuration of @ref CLMinMaxLayerKernel 69 * 70 * @param[in] input Input tensor info. Data types supported: F32. 71 * @param[in] output Output tensor info with shape [2, batches, ...] which stores the minimum and maximum values for each 3D input tensor. 72 * The dimensions over the second must match the batched dimensions of the input tensor. Data types supported: F32. 73 * 74 * @return a status 75 */ 76 static Status validate(const ITensorInfo *input, const ITensorInfo *output); 77 /** Resets global minimum and maximum. */ 78 void reset(); 79 80 // Inherited methods overridden: 81 void run(const Window &window, const ThreadInfo &info) override; 82 83 private: 84 void update_min_max(float *out_ptr, float min, float max); 85 const ITensor *_input; 86 ITensor *_output; 87 arm_compute::Mutex _mtx; 88 }; 89 } // namespace arm_compute 90 #endif /* ARM_COMPUTE_NEMINMAXLAYERKERNEL_H */ 91