IVGCVSW-2874 Add DequantizeLayer and no-op factory method

*Add Dequantize layer to the frontend
*Add Serializer and Deserializer for Dequantize

Change-Id: Ide2647b9e0348d599deb97e61ca4bf66e2f17fc0
Signed-off-by: Nattapat Chaimanowong <nattapat.chaimanowong@arm.com>

1 files changed, 52 insertions, 0 deletions

diff --git a/src/armnn/layers/DequantizeLayer.cpp b/src/armnn/layers/DequantizeLayer.cpp
new file mode 100644
index 0000000000..4dd30de77b
--- /dev/null
+++ b/src/armnn/layers/DequantizeLayer.cpp
@@ -0,0 +1,52 @@
+//
+// Copyright © 2017 Arm Ltd. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+#include "DequantizeLayer.hpp"
+
+#include "LayerCloneBase.hpp"
+
+#include <backendsCommon/WorkloadData.hpp>
+#include <backendsCommon/WorkloadFactory.hpp>
+
+namespace armnn
+{
+
+DequantizeLayer::DequantizeLayer(const char* name)
+    : Layer(1, 1, LayerType::Dequantize, name)
+{}
+
+std::unique_ptr<IWorkload> DequantizeLayer::CreateWorkload(const Graph& graph,
+                                                           const IWorkloadFactory& factory) const
+{
+    DequantizeQueueDescriptor descriptor;
+
+    return factory.CreateDequantize(descriptor, PrepInfoAndDesc(descriptor, graph));
+}
+
+DequantizeLayer* DequantizeLayer::Clone(Graph& graph) const
+{
+    return CloneBase<DequantizeLayer>(graph, GetName());
+}
+
+void DequantizeLayer::ValidateTensorShapesFromInputs()
+{
+    VerifyLayerConnections(1, CHECK_LOCATION());
+
+    std::vector<TensorShape> inferredShapes = InferOutputShapes({
+        GetInputSlot(0).GetConnection()->GetTensorInfo().GetShape() });
+
+    BOOST_ASSERT(inferredShapes.size() == 1);
+
+    ConditionalThrowIfNotEqual<LayerValidationException>(
+        "DequantizeLayer: TensorShape set on OutputSlot[0] does not match the inferred shape.",
+        GetOutputSlot(0).GetTensorInfo().GetShape(),
+        inferredShapes[0]);
+}
+
+void DequantizeLayer::Accept(ILayerVisitor& visitor) const
+{
+    visitor.VisitDequantizeLayer(this, GetName());
+}
+
+} // namespace armnn