1 /* 2 * Copyright (c) 2018-2021 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 25 #ifndef ARM_COMPUTE_NESTACKLAYERKERNEL_H 26 #define ARM_COMPUTE_NESTACKLAYERKERNEL_H 27 28 #include "arm_compute/core/Types.h" 29 #include "src/core/NEON/INEKernel.h" 30 31 namespace arm_compute 32 { 33 class ITensor; 34 35 /** Basic kernel to stack a rank-R tensor into one with rank-(R+1) along the axis dimension. */ 36 class NEStackLayerKernel : public INEKernel 37 { 38 public: name()39 const char *name() const override 40 { 41 return "NEStackLayerKernel"; 42 } 43 /** Default constructor */ 44 NEStackLayerKernel(); 45 /** Prevent instances of this class from being copied (As this class contains pointers) */ 46 NEStackLayerKernel(const NEStackLayerKernel &) = delete; 47 /** Prevent instances of this class from being copied (As this class contains pointers) */ 48 NEStackLayerKernel &operator=(const NEStackLayerKernel &) = delete; 49 /** Allow instances of this class to be moved */ 50 NEStackLayerKernel(NEStackLayerKernel &&) = default; 51 /** Allow instances of this class to be moved */ 52 NEStackLayerKernel &operator=(NEStackLayerKernel &&) = default; 53 /** Default destructor */ 54 ~NEStackLayerKernel() = default; 55 /** Initialise the kernel's inputs and output 56 * 57 * @note Supported input tensor rank: up to 4 58 * 59 * @param[in] input Input tensor. Data types supported: All 60 * @param[in] axis The dimension to stack the tensors along. It must be smaller than the number of input dimensions. 61 * @param[in] idx_input Index of the input tensor in the list of tensors to stack. 62 * All tensors in the list must have the same shape 63 * @param[in] num_tensors Number of tensors to stack 64 * @param[out] output Output tensor. Data types supported: Same as @p input. 65 * 66 */ 67 void configure(const ITensor *input, unsigned int axis, unsigned int idx_input, unsigned int num_tensors, ITensor *output); 68 /** Static function to check if given info will lead to a valid configuration of @ref NEStackLayerKernel 69 * 70 * @note Supported input tensor rank: up to 4 71 * 72 * @param[in] input Input tensor info. Data types supported: All 73 * @param[in] axis The dimension to stack the tensors along. It must be smaller than the number of input dimensions. 74 * @param[in] idx_input Index of the input tensor in the list of tensors to stack 75 * All tensors in the list must have the same shape 76 * @param[in] num_tensors Number of tensors to stack 77 * @param[in] output Output tensor info. Data types supported: Same as @p input. 78 * 79 * @return a status 80 */ 81 static Status validate(const ITensorInfo *input, unsigned int axis, unsigned int idx_input, unsigned int num_tensors, const ITensorInfo *output); 82 83 // Inherited methods overridden 84 void run(const Window &window, const ThreadInfo &info) override; 85 86 private: 87 const ITensor *_input; 88 ITensor *_output; 89 unsigned int _axis; 90 unsigned int _idx_input; 91 }; 92 } // namespace arm_compute 93 #endif /* ARM_COMPUTE_NESTACKLAYERKERNEL_H */ 94