1 /* 2 * Copyright (c) 2017-2019 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_TEST_NEON_LUTACCESSOR_H 25 #define ARM_COMPUTE_TEST_NEON_LUTACCESSOR_H 26 27 #include "tests/ILutAccessor.h" 28 29 #include "arm_compute/runtime/Lut.h" 30 31 namespace arm_compute 32 { 33 namespace test 34 { 35 /** Accessor implementation for @ref Lut objects. */ 36 template <typename T> 37 class LutAccessor : public ILutAccessor<T> 38 { 39 public: 40 /** Create an accessor for the given @p Lut. 41 */ LutAccessor(Lut & lut)42 LutAccessor(Lut &lut) 43 : _lut{ lut } 44 { 45 } 46 47 /** Prevent instances of this class from being copy constructed */ 48 LutAccessor(const LutAccessor &) = delete; 49 /** Prevent instances of this class from being copied */ 50 LutAccessor &operator=(const LutAccessor &) = delete; 51 /** Allow instances of this class to be move constructed */ 52 LutAccessor(LutAccessor &&) = default; 53 /** Allow instances of this class to be moved */ 54 LutAccessor &operator=(LutAccessor &&) = default; 55 num_elements()56 int num_elements() const override 57 { 58 return _lut.num_elements(); 59 } 60 61 const T &operator[](T input_value) const override 62 { 63 auto lut = reinterpret_cast<T *>(_lut.buffer()); 64 int32_t real_index = _lut.index_offset() + static_cast<int32_t>(input_value); 65 66 if(0 <= real_index && real_index < num_elements()) 67 { 68 return lut[real_index]; 69 } 70 ARM_COMPUTE_ERROR("Error index not in range."); 71 } 72 73 T &operator[](T input_value) override 74 { 75 auto lut = reinterpret_cast<T *>(_lut.buffer()); 76 int32_t real_index = _lut.index_offset() + static_cast<int32_t>(input_value); 77 78 if(0 <= real_index && real_index < num_elements()) 79 { 80 return lut[real_index]; 81 } 82 ARM_COMPUTE_ERROR("Error index not in range."); 83 } 84 85 private: 86 ILut &_lut; 87 }; 88 } // namespace test 89 } // namespace arm_compute 90 #endif /* ARM_COMPUTE_TEST_NEON_LUTACCESSOR_H */ 91