From 3ae3f978cf9ce3174609b7152af87acb410b0fe0 Mon Sep 17 00:00:00 2001
From: Keith Davis <keith.davis@arm.com>
Date: Fri, 21 May 2021 16:33:48 +0100
Subject: MLCE-510 Add CpuRef Shape Operator to ArmNN

 * Add front end
 * Add reference workload
 * Serialization/Deserialization
 * Add unit tests
 * Update ArmNN Versioning

Signed-off-by: Keith Davis <keith.davis@arm.com>
Change-Id: I6fcb1fa341d6f08dea4003b13544e6e9f53fefd3
---
 src/armnn/layers/ShapeLayer.cpp | 73 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 73 insertions(+)
 create mode 100644 src/armnn/layers/ShapeLayer.cpp

(limited to 'src/armnn/layers/ShapeLayer.cpp')

diff --git a/src/armnn/layers/ShapeLayer.cpp b/src/armnn/layers/ShapeLayer.cpp
new file mode 100644
index 0000000000..4193fa9aab
--- /dev/null
+++ b/src/armnn/layers/ShapeLayer.cpp
@@ -0,0 +1,73 @@
+//
+// Copyright © 2021 Arm Ltd and Contributors. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+
+#include "ShapeLayer.hpp"
+
+#include "LayerCloneBase.hpp"
+
+#include <armnn/TypesUtils.hpp>
+#include <armnn/utility/NumericCast.hpp>
+
+#include <backendsCommon/WorkloadData.hpp>
+#include <backendsCommon/WorkloadFactory.hpp>
+
+namespace armnn
+{
+
+ShapeLayer::ShapeLayer(const char* name)
+    : Layer(1, 1, LayerType::Shape, name)
+{
+}
+
+std::unique_ptr<IWorkload> ShapeLayer::CreateWorkload(const IWorkloadFactory& factory) const
+{
+    ShapeQueueDescriptor descriptor;
+    SetAdditionalInfo(descriptor);
+
+    return factory.CreateShape(descriptor, PrepInfoAndDesc(descriptor));
+}
+
+ShapeLayer* ShapeLayer::Clone(Graph& graph) const
+{
+    return CloneBase<ShapeLayer>(graph, GetName());
+}
+
+void ShapeLayer::ValidateTensorShapesFromInputs()
+{
+    VerifyLayerConnections(1, CHECK_LOCATION());
+
+    const TensorShape& outputShape = GetOutputSlot(0).GetTensorInfo().GetShape();
+
+    VerifyShapeInferenceType(outputShape, m_ShapeInferenceMethod);
+
+    auto inferredShape = InferOutputShapes({ GetInputSlot(0).GetConnection()->GetTensorInfo().GetShape() });
+
+    ARMNN_ASSERT(inferredShape.size() == 1);
+
+    ValidateAndCopyShape(outputShape, inferredShape[0], m_ShapeInferenceMethod, "ShapeLayer");
+}
+
+std::vector<TensorShape> ShapeLayer::InferOutputShapes(const std::vector<TensorShape>& inputShapes) const
+{
+    IgnoreUnused(inputShapes);
+    ARMNN_ASSERT(inputShapes.size() == 1);
+
+    TensorShape outputShape({ inputShapes[0].GetNumDimensions()} );
+
+    return std::vector<TensorShape>({ outputShape });
+}
+
+void ShapeLayer::Accept(ILayerVisitor& visitor) const
+{
+    IgnoreUnused(visitor);
+    throw armnn::Exception("ShapeLayer VisitShapeLayer is not implemented");
+}
+
+void ShapeLayer::ExecuteStrategy(IStrategy& strategy) const
+{
+    strategy.ExecuteStrategy(this, BaseDescriptor(), {}, GetName());
+}
+
+} // namespace armnn
-- 
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