| /* |
| * Copyright (c) 2019-2021 Arm Limited. |
| * |
| * SPDX-License-Identifier: MIT |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to |
| * deal in the Software without restriction, including without limitation the |
| * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or |
| * sell copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in all |
| * copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| * SOFTWARE. |
| */ |
| |
| #ifndef ARM_COMPUTE_NEGATHERKERNEL_H |
| #define ARM_COMPUTE_NEGATHERKERNEL_H |
| |
| #include "arm_compute/core/Types.h" |
| #include "src/core/NEON/INEKernel.h" |
| |
| namespace arm_compute |
| { |
| // Forward declarations |
| class ITensor; |
| |
| /** Kernel to perform other operation on Neon */ |
| class NEGatherKernel : public INEKernel |
| { |
| public: |
| /** Default constructor. */ |
| NEGatherKernel(); |
| /** Prevent instances of this class from being copied (As this class contains pointers). */ |
| NEGatherKernel(const NEGatherKernel &) = delete; |
| /** Prevent instances of this class from being copied (As this class contains pointers). */ |
| NEGatherKernel &operator=(const NEGatherKernel &) = delete; |
| /** Allow instances of this class to be moved. */ |
| NEGatherKernel(NEGatherKernel &&) = default; |
| /** Allow instances of this class to be moved. */ |
| NEGatherKernel &operator=(NEGatherKernel &&) = default; |
| /** Default detructor */ |
| ~NEGatherKernel() = default; |
| |
| /** Name of the kernel |
| * |
| * @return Kernel name |
| */ |
| const char *name() const override |
| { |
| return "NEGatherKernel"; |
| } |
| /** Initialise the kernel's inputs and outputs |
| * |
| * @param[in] input Source tensor. Supported tensor rank: up to 4. Data type supported: All |
| * @param[in] indices Indices tensor. Supported tensor rank: up to 1. Must be one of the following type: U32/S32. Each value Must be in range [0, input.shape[@p axis]) |
| * @param[out] output Destination tensor. Data type supported: Same as @p input |
| * @param[in] axis (Optional) The axis in @p input to gather @p indices from. Negative values wrap around. Defaults to 0 |
| */ |
| void configure(const ITensor *input, const ITensor *indices, ITensor *output, int axis = 0); |
| /** Static function to check if given info will lead to a valid configuration of @ref NEGatherKernel |
| * |
| * @param[in] input Source tensor info. Supported tensor rank: up to 4. Data type supported: All |
| * @param[in] indices Indices tensor info. Supported tensor rank: up to 1. Must be one of the following type: U32/S32. Each value Must be in range [0, input.shape[@p axis]) |
| * @param[in] output Destination tensor info. Data type supported: Same as @p input |
| * @param[in] axis (Optional) The axis in @p input to gather @p indices from. Negative values wrap around. Defaults to 0 |
| * |
| * @return a status |
| */ |
| static Status validate(const ITensorInfo *input, const ITensorInfo *indices, const ITensorInfo *output, int axis); |
| |
| // Inherited methods overridden: |
| void run(const Window &window, const ThreadInfo &info) override; |
| |
| private: |
| /** Implementation of the gather operation for 0 axis. |
| * |
| * For gather on the 0 axis an element by element copy is performed. |
| * |
| * @param[in] window Region on which to execute the kernel. (Must be a region of the window returned by window()) |
| * @param[in] info Info about executing thread and CPU. |
| */ |
| template <typename U> |
| void gather_0_axis(const Window &window, const ThreadInfo &info); |
| |
| /** Implementation of the gather operation. |
| * |
| * For 1<=axis a row-wise copy is taking place. |
| * |
| * @param[in] window Region on which to execute the kernel. (Must be a region of the window returned by window()) |
| * @param[in] info Info about executing thread and CPU. |
| */ |
| template <typename U> |
| void gather_n_axis(const Window &window, const ThreadInfo &info); |
| |
| using kernel_ptr = void (NEGatherKernel::*)(const Window &window, const ThreadInfo &info); |
| |
| const ITensor *_input; |
| const ITensor *_indices; |
| int _axis; |
| ITensor *_output; |
| kernel_ptr _func; |
| }; |
| } // namespace arm_compute |
| #endif /* ARM_COMPUTE_NEGATHERKERNEL_H */ |