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 #ifndef ARM_COMPUTE_NEQUANTIZATIONLAYERKERNEL_H 25 #define ARM_COMPUTE_NEQUANTIZATIONLAYERKERNEL_H 26 27 #include "src/core/NEON/INEKernel.h" 28 29 namespace arm_compute 30 { 31 class ITensor; 32 33 /** Interface for the quantization layer kernel. 34 * 35 * @note The implementation supports only 3D input tensors 36 * 37 */ 38 class NEQuantizationLayerKernel : public INEKernel 39 { 40 public: name()41 const char *name() const override 42 { 43 return "NEQuantizationLayerKernel"; 44 } 45 /** Default constructor */ 46 NEQuantizationLayerKernel(); 47 /** Prevent instances of this class from being copied (As this class contains pointers) */ 48 NEQuantizationLayerKernel(const NEQuantizationLayerKernel &) = delete; 49 /** Prevent instances of this class from being copied (As this class contains pointers) */ 50 NEQuantizationLayerKernel &operator=(const NEQuantizationLayerKernel &) = delete; 51 /** Default Move Constructor. */ 52 NEQuantizationLayerKernel(NEQuantizationLayerKernel &&) = default; 53 /** Default move assignment operator */ 54 NEQuantizationLayerKernel &operator=(NEQuantizationLayerKernel &&) = default; 55 /** Default destructor */ 56 ~NEQuantizationLayerKernel() = default; 57 /** Set the input, output. 58 * 59 * @param[in] input Source tensor. The dimensions over the third will be interpreted as batches. Data types supported: QASYMM8/QASYMM8_SIGNED/F32/F16. 60 * @param[out] output Destination tensor with the same dimensions of input. Data types supported: QASYMM8/QASYMM8_SIGNED/QASYMM16. 61 * 62 * @note Output auto initialization is not supported by this kernel 63 */ 64 void configure(const ITensor *input, ITensor *output); 65 /** Static function to check if given info will lead to a valid configuration of @ref NEQuantizationLayerKernel 66 * 67 * @param[in] input Input tensor info. Data types supported: QASYMM8/QASYMM8_SIGNED/F32/F16. 68 * @param[in] output Output tensor info. Data types supported: QASYMM8/QASYMM8_SIGNED/QASYMM16. 69 * 70 * @return a status 71 */ 72 static Status validate(const ITensorInfo *input, const ITensorInfo *output); 73 74 // Inherited methods overridden: 75 void run(const Window &window, const ThreadInfo &info) override; 76 77 private: 78 /** Common signature for all the specialised @ref NEQuantizationLayerKernel functions 79 * 80 * @param[in] window Region on which to execute the kernel. 81 */ 82 using QuantizationFunctionExecutorPtr = void (NEQuantizationLayerKernel::*)(const Window &window); 83 /** Function to apply QASYMM8 or QASYMM8_SIGNED quantization on a tensor. 84 * 85 * @param[in] window Region on which to execute the kernel. 86 */ 87 template <typename TIn, typename TOut> 88 void run_quantize_qasymm8(const Window &window); 89 /** Function to apply QASYMM16 quantization on a tensor. 90 * 91 * @param[in] window Region on which to execute the kernel. 92 */ 93 template <typename T> 94 void run_quantize_qasymm16(const Window &window); 95 96 const ITensor *_input; 97 ITensor *_output; 98 99 QuantizationFunctionExecutorPtr _func; 100 }; 101 } // namespace arm_compute 102 #endif /*ARM_COMPUTE_NEQUANTIZATIONLAYERKERNEL_H */ 103