1 /* 2 * Copyright (c) 2018-2020 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_CLARGMINMAXLAYER_H 25 #define ARM_COMPUTE_CLARGMINMAXLAYER_H 26 27 #include "arm_compute/core/Types.h" 28 #include "arm_compute/runtime/CL/CLTensor.h" 29 #include "arm_compute/runtime/CL/functions/CLReshapeLayer.h" 30 #include "arm_compute/runtime/IFunction.h" 31 #include "arm_compute/runtime/IMemoryManager.h" 32 #include "arm_compute/runtime/MemoryGroup.h" 33 34 namespace arm_compute 35 { 36 class ITensorInfo; 37 class ICLTensor; 38 class CLArgMinMaxLayerKernel; 39 40 /** Function to calculate the index of the minimum or maximum values in a 41 * tensor based on an axis. 42 * 43 * @note The default data type for an uninitialized output tensor is 44 * signed 32-bit integer (S32). It is the user's responsibility to check 45 * that the results do not overflow because the indices are computed 46 * in unsigned 32-bit (U32). 47 */ 48 class CLArgMinMaxLayer : public IFunction 49 { 50 public: 51 /** Default Constructor. 52 * 53 * @param[in] memory_manager (Optional) Memory manager. 54 */ 55 CLArgMinMaxLayer(std::shared_ptr<IMemoryManager> memory_manager = nullptr); 56 /** Prevent instances of this class from being copied */ 57 CLArgMinMaxLayer(const CLArgMinMaxLayer &) = delete; 58 /** Prevent instances of this class from being copied */ 59 CLArgMinMaxLayer &operator=(const CLArgMinMaxLayer &) = delete; 60 /** Prevent instances of this class to be moved */ 61 CLArgMinMaxLayer(CLArgMinMaxLayer &&) = delete; 62 /** Prevent instances of this class to be moved */ 63 CLArgMinMaxLayer &operator=(CLArgMinMaxLayer &&) = delete; 64 /** Default destructor */ 65 ~CLArgMinMaxLayer(); 66 /** Set the input and output tensors. 67 * 68 * @param[in] input Input source tensor. Data types supported: QASYMM8/QASYMM8_SIGNED/S32/F16/F32. 69 * @param[in] axis Axis to find max/min index. 70 * @param[out] output Output source tensor. Data types supported: U32/S32. 71 * @param[in] op Reduction operation to perform. Operations supported: ARG_IDX_MAX, ARG_IDX_MIN 72 */ 73 void configure(const ICLTensor *input, int axis, ICLTensor *output, const ReductionOperation &op); 74 /** Set the input and output tensors. 75 * 76 * @param[in] compile_context The compile context to be used. 77 * @param[in] input Input source tensor. Data types supported: QASYMM8/QASYMM8_SIGNED/S32/F16/F32. 78 * @param[in] axis Axis to find max/min index. 79 * @param[out] output Output source tensor. Data types supported: U32/S32. 80 * @param[in] op Reduction operation to perform. Operations supported: ARG_IDX_MAX, ARG_IDX_MIN 81 */ 82 void configure(const CLCompileContext &compile_context, const ICLTensor *input, int axis, ICLTensor *output, const ReductionOperation &op); 83 /** Static function to check if given info will lead to a valid configuration of @ref CLArgMinMaxLayer 84 * 85 * @param[in] input Input source tensor info. Data types supported: QASYMM8/QASYMM8_SIGNED/S32/F16/F32. 86 * @param[in] axis Axis to find max/min index. 87 * @param[in] output Output source tensor info. Data types supported: U32/S32. 88 * @param[in] op Reduction operation to perform. Operations supported: ARG_IDX_MAX, ARG_IDX_MIN 89 * 90 * @return a status 91 */ 92 static Status validate(const ITensorInfo *input, int axis, const ITensorInfo *output, const ReductionOperation &op); 93 94 // Inherited methods overridden: 95 void run() override; 96 97 private: 98 MemoryGroup _memory_group; 99 std::vector<CLTensor> _results_vector; 100 CLTensor _not_reshaped_output; 101 std::vector<std::unique_ptr<CLArgMinMaxLayerKernel>> _reduction_kernels_vector; 102 CLReshapeLayer _reshape; 103 unsigned int _num_of_stages; 104 unsigned int _reduction_axis; 105 }; 106 } // namespace arm_compute 107 #endif /* ARM_COMPUTE_CLARGMINMAXLAYER_H */ 108