1 /* 2 * Copyright (c) 2017-2021 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_NEREDUCTIONOPERATIONKERNEL_H 25 #define ARM_COMPUTE_NEREDUCTIONOPERATIONKERNEL_H 26 27 #include "src/core/NEON/INEKernel.h" 28 29 namespace arm_compute 30 { 31 class ITensor; 32 33 /** Kernel to perform a reduction operation 34 * 35 * @note For ARG_MIN/ARG_MAX reduction, the default data type for an uninitialized 36 * output tensor is signed 32-bit integer (S32). It is the user's responsibility 37 * to check that the results do not overflow because the indices are computed 38 * in unsigned 32-bit (U32). 39 */ 40 class NEReductionOperationKernel : public INEKernel 41 { 42 public: name()43 const char *name() const override 44 { 45 return "NEReductionOperationKernel"; 46 } 47 /** Default constructor */ 48 NEReductionOperationKernel(); 49 /** Prevent instances of this class from being copied (As this class contains pointers) */ 50 NEReductionOperationKernel(const NEReductionOperationKernel &) = delete; 51 /** Prevent instances of this class from being copied (As this class contains pointers) */ 52 NEReductionOperationKernel &operator=(const NEReductionOperationKernel &) = delete; 53 /** Allow instances of this class to be moved */ 54 NEReductionOperationKernel(NEReductionOperationKernel &&) = default; 55 /** Allow instances of this class to be moved */ 56 NEReductionOperationKernel &operator=(NEReductionOperationKernel &&) = default; 57 /** Default destructor */ 58 ~NEReductionOperationKernel() = default; 59 60 /** Set the source, destination of the kernel 61 * 62 * @param[in] input Source tensor. Data type supported: QASYMM8_SIGNED/QASYMM8/F16/F32/S32. 63 * @param[out] output Destination tensor.Data types and data layouts supported: same as @p input, S32 for ARG_MIX/ARG_MAX. 64 * Output will have the same number of dimensions as input. 65 * @param[in] axis Axis along which to reduce. Supported reduction axis : 0 66 * @param[in] op Reduction operation to perform. 67 */ 68 void configure(const ITensor *input, ITensor *output, unsigned int axis, ReductionOperation op); 69 70 /** Static function to check if given info will lead to a valid configuration of @ref NEReductionOperationKernel. 71 * 72 * @param[in] input Source tensor info. Data type supported: QASYMM8_SIGNED/QASYMM8/F16/F32/S32. 73 * @param[in] output Destination tensor info.Data types and data layouts supported: same as @p input, S32 for ARG_MIX/ARG_MAX. 74 * Output will have the same number of dimensions as input. 75 * @param[in] axis Axis along which to reduce. Supported reduction axis : 0 76 * @param[in] op Reduction operation to perform. 77 * 78 * @return a status 79 */ 80 static Status validate(const ITensorInfo *input, const ITensorInfo *output, unsigned int axis, ReductionOperation op); 81 82 // Inherited methods overridden: 83 void run(const Window &window, const ThreadInfo &info) override; 84 85 private: 86 const ITensor *_input; 87 ITensor *_output; 88 unsigned int _reduction_axis; 89 ReductionOperation _op; 90 }; 91 } // namespace arm_compute 92 #endif /*ARM_COMPUTE_NEREDUCTIONOPERATIONKERNEL_H */ 93