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//
// Copyright © 2017 Arm Ltd and Contributors. All rights reserved.
// SPDX-License-Identifier: MIT
//
#pragma once
#include "LayerWithParameters.hpp"
namespace armnn
{
/// This layer represents a merge operation.
class ConcatLayer : public LayerWithParameters<OriginsDescriptor>
{
public:
/// Makes a workload for the Concat type.
/// @param [in] graph The graph where this layer can be found.
/// @param [in] factory The workload factory which will create the workload.
/// @return A pointer to the created workload, or nullptr if not created.
virtual std::unique_ptr<IWorkload> CreateWorkload(const IWorkloadFactory& factory) const override;
/// Set the outputs to be appropriate sub tensors of the input if sub tensors are supported
/// otherwise creates tensor handlers.
/// @param [in] registry Contains all the registered tensor handle factories available for use.
/// @param [in] factory The workload factory which will create the workload.
/// @param [in] IsMemoryManaged Determine whether or not to assign a memory manager during creation
virtual void CreateTensorHandles(const TensorHandleFactoryRegistry& registry,
const IWorkloadFactory& factory,
const bool IsMemoryManaged = true) override;
/// Creates a dynamically-allocated copy of this layer.
/// @param [in] graph The graph into which this layer is being cloned.
ConcatLayer* Clone(Graph& graph) const override;
/// Check if the input tensor shape(s)
/// will lead to a valid configuration of @ref ConcatLayer.
/// @param [in] shapeInferenceMethod Indicates if output shape shall be overwritten or just validated.
void ValidateTensorShapesFromInputs() override;
/// By default returns inputShapes if the number of inputs are equal to number of outputs,
/// otherwise infers the output shapes from given input shapes and layer properties.
/// @param [in] inputShapes The input shapes layer has.
/// @return A vector to the inferred output shape.
std::vector<TensorShape> InferOutputShapes(const std::vector<TensorShape>& inputShapes) const override;
void Accept(ILayerVisitor& visitor) const override;
protected:
/// Constructor to create a ConcatLayer.
/// @param [in] param OriginsDescriptor to configure the concat operation.
/// @param [in] name Optional name for the layer.
ConcatLayer(const OriginsDescriptor& param, const char* name);
/// Default destructor
~ConcatLayer() = default;
private:
template <typename FactoryType>
void CreateTensors(const FactoryType& factory);
};
} // namespace
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