1 /* 2 * Copyright (c) 2016-2020 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 #ifndef ARM_COMPUTE_NEABSOLUTEDIFFERENCEKERNEL_H 25 #define ARM_COMPUTE_NEABSOLUTEDIFFERENCEKERNEL_H 26 27 #include "src/core/NEON/INEKernel.h" 28 29 namespace arm_compute 30 { 31 class ITensor; 32 33 /** Interface for the absolute difference kernel 34 * 35 * Absolute difference is computed by: 36 * @f[ output(x,y) = | input1(x,y) - input2(x,y) | @f] 37 */ 38 class NEAbsoluteDifferenceKernel : public INEKernel 39 { 40 public: name()41 const char *name() const override 42 { 43 return "NEAbsoluteDifferenceKernel"; 44 } 45 /** Default constructor */ 46 NEAbsoluteDifferenceKernel(); 47 /** Prevent instances of this class from being copied (As this class contains pointers) */ 48 NEAbsoluteDifferenceKernel(const NEAbsoluteDifferenceKernel &) = delete; 49 /** Prevent instances of this class from being copied (As this class contains pointers) */ 50 NEAbsoluteDifferenceKernel &operator=(const NEAbsoluteDifferenceKernel &) = delete; 51 /** Allow instances of this class to be moved */ 52 NEAbsoluteDifferenceKernel(NEAbsoluteDifferenceKernel &&) = default; 53 /** Allow instances of this class to be moved */ 54 NEAbsoluteDifferenceKernel &operator=(NEAbsoluteDifferenceKernel &&) = default; 55 /** Default destructor */ 56 ~NEAbsoluteDifferenceKernel() = default; 57 58 /** Set the inputs and output tensors 59 * 60 * @param[in] input1 Source tensor. Data types supported: U8/S16 61 * @param[in] input2 Source tensor. Data types supported: U8/S16 62 * @param[out] output Destination tensor, Data types supported: U8/S16 63 */ 64 void configure(const ITensor *input1, const ITensor *input2, ITensor *output); 65 66 // Inherited methods overridden: 67 void run(const Window &window, const ThreadInfo &info) override; 68 69 private: 70 /** Common signature for all the specialised absolute difference functions 71 * 72 * @param[in] input1 An input tensor. Data types supported: U8/S16. 73 * @param[in] input2 An input tensor. Data types supported: U8/S16. 74 * @param[out] output The output tensor, Data types supported: U8 (Only if both inputs are U8), S16. 75 * @param[in] window Region on which to execute the kernel. 76 */ 77 using AbsDiffFunction = void(const ITensor *input1, const ITensor *input2, ITensor *output, const Window &window); 78 79 /** Absolute difference function to use for the particular tensor formats passed to configure() */ 80 AbsDiffFunction *_func; 81 const ITensor *_input1; 82 const ITensor *_input2; 83 ITensor *_output; 84 }; 85 } // namespace arm_compute 86 #endif /* ARM_COMPUTE_NEABSOLUTEDIFFERENCEKERNEL_H */ 87