From 430b5d824a17ddfb31bb29c18407e45e0def958c Mon Sep 17 00:00:00 2001
From: Conor Kennedy <conor.kennedy@arm.com>
Date: Wed, 14 Nov 2018 15:28:28 +0000
Subject: IVGCVSW-2086: Add StridedSlice layer & corresponding no-op factory
 implementations

Change-Id: I906dcb8b4c9b491bf3a661f208c09d0ea1c0fa35
---
 src/armnn/layers/StridedSliceLayer.cpp | 58 ++++++++++++++++++++++++++++++++++
 src/armnn/layers/StridedSliceLayer.hpp | 27 ++++++++++++++++
 2 files changed, 85 insertions(+)
 create mode 100644 src/armnn/layers/StridedSliceLayer.cpp
 create mode 100644 src/armnn/layers/StridedSliceLayer.hpp

(limited to 'src/armnn/layers')

diff --git a/src/armnn/layers/StridedSliceLayer.cpp b/src/armnn/layers/StridedSliceLayer.cpp
new file mode 100644
index 0000000000..f5e001c03f
--- /dev/null
+++ b/src/armnn/layers/StridedSliceLayer.cpp
@@ -0,0 +1,58 @@
+//
+// Copyright © 2017 Arm Ltd. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+#include "StridedSliceLayer.hpp"
+
+#include "LayerCloneBase.hpp"
+
+#include <backendsCommon/WorkloadData.hpp>
+#include <backendsCommon/WorkloadFactory.hpp>
+
+namespace armnn
+{
+
+StridedSliceLayer::StridedSliceLayer(const armnn::StridedSliceDescriptor& param, const char* name)
+    : LayerWithParameters(1, 1, LayerType::StridedSlice, param, name)
+{
+}
+
+std::unique_ptr<IWorkload> StridedSliceLayer::CreateWorkload(const Graph& graph,
+                                                             const IWorkloadFactory& factory) const
+{
+    StridedSliceQueueDescriptor descriptor;
+
+    descriptor.m_Parameters.m_Begin  = m_Param.m_Begin;
+    descriptor.m_Parameters.m_End    = m_Param.m_End;
+    descriptor.m_Parameters.m_Stride = m_Param.m_Stride;
+
+    // Optional parameters
+    descriptor.m_Parameters.m_BeginMask      = m_Param.m_BeginMask;
+    descriptor.m_Parameters.m_EndMask        = m_Param.m_EndMask;
+    descriptor.m_Parameters.m_EllipsisMask   = m_Param.m_EllipsisMask;
+    descriptor.m_Parameters.m_NewAxisMask    = m_Param.m_NewAxisMask;
+    descriptor.m_Parameters.m_ShrinkAxisMask = m_Param.m_ShrinkAxisMask;
+
+    return factory.CreateStridedSlice(descriptor, PrepInfoAndDesc(descriptor, graph));
+}
+
+StridedSliceLayer* StridedSliceLayer::Clone(Graph& graph) const
+{
+    return CloneBase<StridedSliceLayer>(graph, m_Param, GetName());
+}
+
+void StridedSliceLayer::ValidateTensorShapesFromInputs()
+{
+    VerifyLayerConnections(1, CHECK_LOCATION());
+
+    auto inferredShapes = InferOutputShapes({GetInputSlot(0).GetConnection()->GetTensorInfo().GetShape()});
+
+    BOOST_ASSERT(inferredShapes.size() == 1);
+
+    ConditionalThrowIfNotEqual<LayerValidationException>(
+                    "StridedSlice: TensorShape set on OutputSlot[0] does not match the inferred shape.",
+                    GetOutputSlot(0).GetTensorInfo().GetShape(),
+                    inferredShapes[0]);
+}
+
+} // namespace armnn
\ No newline at end of file
diff --git a/src/armnn/layers/StridedSliceLayer.hpp b/src/armnn/layers/StridedSliceLayer.hpp
new file mode 100644
index 0000000000..33a44243a5
--- /dev/null
+++ b/src/armnn/layers/StridedSliceLayer.hpp
@@ -0,0 +1,27 @@
+//
+// Copyright © 2017 Arm Ltd. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+#pragma once
+
+#include "LayerWithParameters.hpp"
+
+namespace armnn
+{
+
+class StridedSliceLayer : public LayerWithParameters<StridedSliceDescriptor>
+{
+public:
+    virtual std::unique_ptr<IWorkload> CreateWorkload(const Graph&            graph,
+                                                      const IWorkloadFactory& factory) const override;
+
+    StridedSliceLayer* Clone(Graph& graph) const override;
+
+    void ValidateTensorShapesFromInputs() override;
+
+protected:
+    StridedSliceLayer(const StridedSliceDescriptor& param, const char* name);
+    ~StridedSliceLayer() = default;
+};
+
+} // namespace
\ No newline at end of file
-- 
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