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//
// Copyright © 2017 Arm Ltd and Contributors. All rights reserved.
// SPDX-License-Identifier: MIT
//
#include "ConstantLayer.hpp"
#include "LayerCloneBase.hpp"
#include <armnn/TypesUtils.hpp>
#include <backendsCommon/CpuTensorHandle.hpp>
#include <backendsCommon/WorkloadData.hpp>
#include <backendsCommon/WorkloadFactory.hpp>
namespace armnn
{
ConstantLayer::ConstantLayer(const char* name)
: Layer(0, 1, LayerType::Constant, name)
{
}
std::unique_ptr<IWorkload> ConstantLayer::CreateWorkload(const IWorkloadFactory& factory) const
{
ConstantQueueDescriptor descriptor;
descriptor.m_LayerOutput = m_LayerOutput.get();
SetAdditionalInfo(descriptor);
return factory.CreateConstant(descriptor, PrepInfoAndDesc(descriptor));
}
ConstantLayer* ConstantLayer::Clone(Graph& graph) const
{
// Cloned layers share the same layer output object.
auto layer = CloneBase<ConstantLayer>(graph, GetName());
layer->m_LayerOutput = m_LayerOutput ? std::make_unique<ScopedCpuTensorHandle>(*m_LayerOutput) : nullptr;
return std::move(layer);
}
std::vector<TensorShape> ConstantLayer::InferOutputShapes(const std::vector<TensorShape>& inputShapes) const
{
return std::vector<TensorShape>({ inputShapes[0] });
}
void ConstantLayer::ValidateTensorShapesFromInputs()
{
// Get the output shape from the value of the constant layer.
TensorShape const& outShape = m_LayerOutput->GetTensorInfo().GetShape();
ConditionalThrow<LayerValidationException>(
outShape.GetDimensionality() != Dimensionality::NotSpecified,
"Constant layer m_LayerOutput output shape can not be Dimensionality::NotSpecified");
ConditionalThrow<LayerValidationException>(
outShape.AreAllDimensionsSpecified(),
"Constant layer m_LayerOutput output shape can not have an unspecified dimension");
ConditionalThrowIfNotEqual<LayerValidationException>(
"ConstantLayer: TensorShape set on OutputSlot[0] does not match the inferred shape.",
GetOutputSlot(0).GetTensorInfo().GetShape(),
outShape);
}
void ConstantLayer::Accept(ILayerVisitor& visitor) const
{
ConstTensor layerOutputTensor(m_LayerOutput->GetTensorInfo(), m_LayerOutput->Map(true)) ;
visitor.VisitConstantLayer(this, layerOutputTensor, GetName());
}
} // namespace armnn
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