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_NETABLELOOKUPKERNEL_H 25 #define ARM_COMPUTE_NETABLELOOKUPKERNEL_H 26 27 #include "src/core/NEON/INESimpleKernel.h" 28 29 namespace arm_compute 30 { 31 class ITensor; 32 class ILut; 33 34 /** Interface for the kernel to perform table lookup calculations. */ 35 class NETableLookupKernel : public INESimpleKernel 36 { 37 public: name()38 const char *name() const override 39 { 40 return "NETableLookupKernel"; 41 } 42 /** Default constructor */ 43 NETableLookupKernel(); 44 /** Prevent instances of this class from being copied (As this class contains pointers) */ 45 NETableLookupKernel(const NETableLookupKernel &) = delete; 46 /** Prevent instances of this class from being copied (As this class contains pointers) */ 47 NETableLookupKernel &operator=(const NETableLookupKernel &) = delete; 48 /** Allow instances of this class to be moved */ 49 NETableLookupKernel(NETableLookupKernel &&) = default; 50 /** Allow instances of this class to be moved */ 51 NETableLookupKernel &operator=(NETableLookupKernel &&) = default; 52 /** Default destructor */ 53 ~NETableLookupKernel() = default; 54 /** Initialise the kernel's input, lut and output. 55 * 56 * @param[in] input An input tensor. Data types supported: U8/S16. 57 * @param[in] lut The input LUT. 58 * @param[out] output The output tensor. Data types supported: same as @p input 59 */ 60 void configure(const ITensor *input, const ILut *lut, ITensor *output); 61 62 // Inherited methods overridden: 63 void run(const Window &window, const ThreadInfo &info) override; 64 65 private: 66 /** Perform table lookup on a given window. 67 * 68 * @param window window Region on which to execute the kernel. 69 */ 70 template <class T> 71 void tableLookup(const Window &window); 72 /** Common signature for all the specialised lut functions 73 * 74 * @param[in] window Region on which to execute the kernel. 75 */ 76 using TableLookupFunction = void (NETableLookupKernel::*)(const Window &window); 77 /** Sub function to use for the particular tensor types passed to configure() */ 78 TableLookupFunction _func; 79 const ILut *_lut; 80 }; 81 } // namespace arm_compute 82 #endif /* ARM_COMPUTE_NETABLELOOKUPKERNEL_H */ 83