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_NE_STRIDED_SLICE_KERNEL_H 25 #define ARM_COMPUTE_NE_STRIDED_SLICE_KERNEL_H 26 27 #include "arm_compute/core/Types.h" 28 #include "src/core/NEON/INEKernel.h" 29 30 #include <cstdint> 31 32 namespace arm_compute 33 { 34 // Forward declarations 35 class ITensor; 36 37 /** Interface for the kernel to perform tensor strided slicing */ 38 class NEStridedSliceKernel : public INEKernel 39 { 40 public: name()41 const char *name() const override 42 { 43 return "NEStridedSliceKernel"; 44 } 45 /** Default constructor */ 46 NEStridedSliceKernel(); 47 /** Prevent instances of this class from being copied (As this class contains pointers) */ 48 NEStridedSliceKernel(const NEStridedSliceKernel &) = delete; 49 /** Prevent instances of this class from being copied (As this class contains pointers) */ 50 NEStridedSliceKernel &operator=(const NEStridedSliceKernel &) = delete; 51 /** Allow instances of this class to be moved */ 52 NEStridedSliceKernel(NEStridedSliceKernel &&) = default; 53 /** Allow instances of this class to be moved */ 54 NEStridedSliceKernel &operator=(NEStridedSliceKernel &&) = default; 55 /** Default destructor */ 56 ~NEStridedSliceKernel() = default; 57 /** Configure kernel 58 * 59 * @note Supported tensor rank: up to 4 60 * 61 * @param[in] input Source tensor info. Data type supported: All 62 * @param[out] output Destination tensor info. Data type supported: Same as @p input 63 * @param[in] starts The starts of the dimensions of the input tensor to be sliced. The length must be of rank(input). 64 * @param[in] ends The ends of the dimensions of the input tensor to be sliced. The length must be of rank(input). 65 * @param[in] strides The strides of the dimensions of the input tensor to be sliced. The length must be of rank(input). 66 * @param[in] begin_mask If the ith bit of begin_mask is set, starts[i] is ignored and the fullest possible range in that dimension is used instead. 67 * @param[in] end_mask If the ith bit of end_mask is set, ends[i] is ignored and the fullest possible range in that dimension is used instead. 68 * @param[in] shrink_axis_mask If the ith bit of shrink_axis_mask is set, it implies that the ith specification shrinks the dimensionality by 1. 69 * A slice of size 1 starting from starts[i] in the dimension must be preserved. 70 */ 71 void configure(const ITensorInfo *input, ITensorInfo *output, 72 const Coordinates &starts, const Coordinates &ends, const BiStrides &strides, 73 int32_t begin_mask, int32_t end_mask, int32_t shrink_axis_mask); 74 75 /** Static function to check if given info will lead to a valid configuration of @ref NEStridedSliceKernel 76 * 77 * @note Supported tensor rank: up to 4 78 * 79 * @param[in] input Source tensor info. Data type supported: All 80 * @param[in] output Destination tensor info. Data type supported: Same as @p input 81 * @param[in] starts The starts of the dimensions of the input tensor to be sliced. The length must be of rank(input). 82 * @param[in] ends The ends of the dimensions of the input tensor to be sliced. The length must be of rank(input). 83 * @param[in] strides The strides of the dimensions of the input tensor to be sliced. The length must be of rank(input). 84 * @param[in] begin_mask If the ith bit of begin_mask is set, starts[i] is ignored and the fullest possible range in that dimension is used instead. 85 * @param[in] end_mask If the ith bit of end_mask is set, ends[i] is ignored and the fullest possible range in that dimension is used instead. 86 * @param[in] shrink_axis_mask If the ith bit of shrink_axis_mask is set, it implies that the ith specification shrinks the dimensionality by 1. 87 * A slice of size 1 starting from starts[i] in the dimension must be preserved. 88 */ 89 static Status validate(const ITensorInfo *input, const ITensorInfo *output, 90 const Coordinates &starts, const Coordinates &ends, const BiStrides &strides, 91 int32_t begin_mask, int32_t end_mask, int32_t shrink_axis_mask); 92 93 // Inherited methods overridden: 94 void run_op(ITensorPack &tensors, const Window &window, const ThreadInfo &info) override; 95 96 private: 97 Coordinates _starts_abs; /**< Absolute start coordinates */ 98 Coordinates _final_strides; /**< Final strides */ 99 int32_t _shrink_mask; /**< Shrink axis mask */ 100 }; 101 } // namespace arm_compute 102 #endif /*ARM_COMPUTE_NE_STRIDED_SLICE_KERNEL_H */ 103