IVGCVSW-3722 Add front end support for ArgMinMax

Change-Id: I31c5616bea3097f30cde68442d3222e0b0fe2235
Signed-off-by: Nikhil Raj <nikhil.raj@arm.com>

2 files changed, 96 insertions, 0 deletions

diff --git a/src/armnn/layers/ArgMinMaxLayer.cpp b/src/armnn/layers/ArgMinMaxLayer.cpp
new file mode 100644
index 0000000000..aad95eb0cf
--- /dev/null
+++ b/src/armnn/layers/ArgMinMaxLayer.cpp
@@ -0,0 +1,52 @@
+//
+// Copyright © 2017 Arm Ltd. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+#include "ArgMinMaxLayer.hpp"
+
+#include "LayerCloneBase.hpp"
+
+#include <armnn/TypesUtils.hpp>
+#include <backendsCommon/WorkloadData.hpp>
+#include <backendsCommon/WorkloadFactory.hpp>
+
+namespace armnn
+{
+
+ArgMinMaxLayer::ArgMinMaxLayer(const ArgMinMaxDescriptor& param, const char* name)
+    : LayerWithParameters(1, 1, LayerType::ArgMinMax, param, name)
+{
+}
+
+std::unique_ptr<IWorkload> ArgMinMaxLayer::CreateWorkload(const Graph& graph,
+    const IWorkloadFactory& factory) const
+{
+    ArgMinMaxQueueDescriptor descriptor;
+    return factory.CreateArgMinMax(descriptor, PrepInfoAndDesc(descriptor, graph));
+}
+
+ArgMinMaxLayer* ArgMinMaxLayer::Clone(Graph& graph) const
+{
+    return CloneBase<ArgMinMaxLayer>(graph, m_Param, GetName());
+}
+
+void ArgMinMaxLayer::ValidateTensorShapesFromInputs()
+{
+    VerifyLayerConnections(1, CHECK_LOCATION());
+
+    auto inferredShapes = InferOutputShapes({ GetInputSlot(0).GetConnection()->GetTensorInfo().GetShape() });
+
+    BOOST_ASSERT(inferredShapes.size() == 1);
+
+    ConditionalThrowIfNotEqual<LayerValidationException>(
+            "ArgMinMaxLayer: TensorShape set on OutputSlot does not match the inferred shape.",
+            GetOutputSlot(0).GetTensorInfo().GetShape(),
+            inferredShapes[0]);
+}
+
+void ArgMinMaxLayer::Accept(ILayerVisitor& visitor) const
+{
+    visitor.VisitArgMinMaxLayer(this, GetParameters(), GetName());
+}
+
+} // namespace armnn
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diff --git a/src/armnn/layers/ArgMinMaxLayer.hpp b/src/armnn/layers/ArgMinMaxLayer.hpp
new file mode 100644
index 0000000000..ca1337f065
--- /dev/null
+++ b/src/armnn/layers/ArgMinMaxLayer.hpp
@@ -0,0 +1,44 @@
+//
+// Copyright © 2017 Arm Ltd. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+
+#pragma once
+
+#include "LayerWithParameters.hpp"
+
+namespace armnn
+{
+
+/// This layer represents a ArgMinMax operation.
+class ArgMinMaxLayer : public LayerWithParameters<ArgMinMaxDescriptor>
+{
+public:
+    /// Makes a workload for the ArgMinMax 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 Graph& graph,
+                                                      const IWorkloadFactory& factory) const override;
+
+    /// Creates a dynamically-allocated copy of this layer.
+    /// @param [in] graph The graph into which this layer is being cloned.
+    ArgMinMaxLayer* Clone(Graph& graph) const override;
+
+    /// Check if the input tensor shape(s)
+    /// will lead to a valid configuration of @ref ArgMinMaxLayer.
+    void ValidateTensorShapesFromInputs() override;
+
+    void Accept(ILayerVisitor& visitor) const override;
+
+protected:
+    /// Constructor to create a ArgMinMaxLayer.
+    /// @param [in] param ArgMinMaxDescriptor to configure the ArgMinMax operation.
+    /// @param [in] name Optional name for the layer.
+    ArgMinMaxLayer(const ArgMinMaxDescriptor& param, const char* name);
+
+    /// Default destructor
+    ~ArgMinMaxLayer() = default;
+};
+
+}
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