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_NEUNSTACK_H 25 #define ARM_COMPUTE_NEUNSTACK_H 26 27 #include "arm_compute/core/Types.h" 28 #include "arm_compute/runtime/IFunction.h" 29 30 #include "arm_compute/runtime/NEON/functions/NEStridedSlice.h" 31 32 #include <memory> 33 34 namespace arm_compute 35 { 36 // Forward declarations 37 class ITensor; 38 39 /** Basic function to unpack a rank-R tensor into rank-(R-1) tensors. This function calls the following functions: 40 * 41 * -# @ref NEStridedSlice 42 */ 43 class NEUnstack : public IFunction 44 { 45 public: 46 /** Default constructor */ 47 NEUnstack(); 48 /** Prevent instances of this class from being copied (As this class contains pointers) */ 49 NEUnstack(const NEUnstack &) = delete; 50 /** Prevent instances of this class from being copied (As this class contains pointers) */ 51 NEUnstack &operator=(const NEUnstack &) = delete; 52 /** Prevent instances of this class from being moved (As this class contains non movable objects) */ 53 NEUnstack(NEUnstack &&) = delete; 54 /** Prevent instances of this class from being moved (As this class contains non movable objects) */ 55 NEUnstack &operator=(NEUnstack &&) = delete; 56 /** Default destructor */ 57 ~NEUnstack() = default; 58 /** Set the input, output and unstacking axis. 59 * 60 * @param[in] input A tensor to be unstacked. Data type supported: All. 61 * @param[in,out] output_vector A vector of tensors. Data types supported: same as @p input. 62 * Note: The number of elements of the vector will be used as the number of slices to be taken from the axis. 63 * @param[in] axis The axis to unstack along. Valid values are [-R,R) where R is the input's rank. Negative values wrap around. 64 * 65 */ 66 void configure(const ITensor *input, const std::vector<ITensor *> &output_vector, int axis); 67 /** Static function to check if given info will lead to a valid configuration of @ref NEUnstack 68 * 69 * @param[in] input Input tensor info. Data type supported: All. 70 * @param[in] output_vector Vector of output tensors' info. Data types supported: same as @p input. 71 * @param[in] axis The axis to unstack along. Valid values are [-R,R) where R is the input's rank. Negative values wrap around. 72 * 73 * @return a status 74 */ 75 static Status validate(const ITensorInfo *input, const std::vector<ITensorInfo *> &output_vector, int axis); 76 77 // Inherited methods overridden: 78 void run() override; 79 80 private: 81 unsigned int _num_slices; 82 std::vector<NEStridedSlice> _strided_slice_vector; 83 }; 84 } // namespace arm_compute 85 #endif /* ARM_COMPUTE_NEUNSTACK_H */ 86