1 // 2 // Copyright © 2017,2022 Arm Ltd and Contributors. All rights reserved. 3 // SPDX-License-Identifier: MIT 4 // 5 #pragma once 6 7 #include "LayerWithParameters.hpp" 8 9 #include <armnn/utility/PolymorphicDowncast.hpp> 10 11 namespace armnn 12 { 13 14 /// This layer represents a permutation operation. 15 class PermuteLayer : public LayerWithParameters<PermuteDescriptor> 16 { 17 public: 18 /// Makes a workload for the Permute type. 19 /// @param [in] factory The workload factory which will create the workload. 20 /// @return A pointer to the created workload, or nullptr if not created. 21 virtual std::unique_ptr<IWorkload> CreateWorkload(const IWorkloadFactory& factory) const override; 22 23 /// Creates a dynamically-allocated copy of this layer. 24 /// @param [in] graph The graph into which this layer is being cloned. 25 PermuteLayer* Clone(Graph& graph) const override; 26 27 /// Check if the input tensor shape(s) 28 /// will lead to a valid configuration of @ref PermuteLayer. 29 void ValidateTensorShapesFromInputs() override; 30 31 /// By default returns inputShapes if the number of inputs are equal to number of outputs, 32 /// otherwise infers the output shapes from given input shapes and layer properties. 33 /// @param [in] inputShapes The input shapes layer has. 34 /// @return A vector to the inferred output shape. 35 std::vector<TensorShape> InferOutputShapes(const std::vector<TensorShape>& inputShapes) const override; 36 37 /// @return a permutation vector represents the memory layout of the tensor elements. GetPermutation() const38 const PermutationVector& GetPermutation() const 39 { 40 return m_Param.m_DimMappings; 41 } 42 43 /// Indicates if the other layer received is inverse of this one. 44 /// @param other The other layer to be compared with. 45 /// @return true if other layer is inverse of this false otherwise. IsInverse(const Layer & other) const46 bool IsInverse(const Layer& other) const 47 { 48 return (other.GetType() == LayerType::Permute) && 49 GetPermutation().IsInverse(PolymorphicDowncast<const PermuteLayer*>(&other)->GetPermutation()); 50 } 51 52 /// Indicates if the other layer received is equal to this one. 53 /// @param other The other layer to be compare with. 54 /// @return true if other layer is equal to this false otherwise. IsEqual(const Layer & other) const55 bool IsEqual(const Layer& other) const 56 { 57 return (other.GetType() == LayerType::Permute) && 58 GetPermutation().IsEqual(PolymorphicDowncast<const PermuteLayer*>(&other)->GetPermutation()); 59 } 60 61 void ExecuteStrategy(IStrategy& strategy) const override; 62 63 64 protected: 65 /// Constructor to create a PermuteLayer. 66 /// @param [in] param PermuteDescriptor to configure the permute operation. 67 /// @param [in] name Optional name for the layer. 68 PermuteLayer(const PermuteDescriptor& param, const char* name); 69 70 /// Default destructor 71 ~PermuteLayer() = default; 72 }; 73 74 } // namespace 75