From 636ab40d3741e12eaad11d5b50e4b34bfbb258b5 Mon Sep 17 00:00:00 2001
From: Aron Virginas-Tar <Aron.Virginas-Tar@arm.com>
Date: Mon, 16 Sep 2019 14:27:45 +0100
Subject: IVGCVSW-3875 Add frontend for SLICE layer

Signed-off-by: Aron Virginas-Tar <Aron.Virginas-Tar@arm.com>
Change-Id: Iebe675a0cee02db6f133d48ce58cbc1e233061db
---
 src/armnn/layers/SliceLayer.cpp | 66 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 66 insertions(+)
 create mode 100644 src/armnn/layers/SliceLayer.cpp

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

diff --git a/src/armnn/layers/SliceLayer.cpp b/src/armnn/layers/SliceLayer.cpp
new file mode 100644
index 0000000000..8ea5fd8f25
--- /dev/null
+++ b/src/armnn/layers/SliceLayer.cpp
@@ -0,0 +1,66 @@
+//
+// Copyright © 2019 Arm Ltd. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+
+#include "SliceLayer.hpp"
+
+#include "LayerCloneBase.hpp"
+
+#include <armnn/TypesUtils.hpp>
+
+#include <backendsCommon/WorkloadData.hpp>
+#include <backendsCommon/WorkloadFactory.hpp>
+
+#include <boost/assert.hpp>
+#include <boost/numeric/conversion/cast.hpp>
+
+namespace armnn
+{
+
+SliceLayer::SliceLayer(const SliceDescriptor& param, const char* name)
+    : LayerWithParameters(1, 1, LayerType::Slice, param, name)
+{
+}
+
+std::unique_ptr<IWorkload> SliceLayer::CreateWorkload(const Graph& graph,
+                                                      const IWorkloadFactory& factory) const
+{
+    SliceQueueDescriptor descriptor;
+    return factory.CreateSlice(descriptor, PrepInfoAndDesc(descriptor, graph));
+}
+
+SliceLayer* SliceLayer::Clone(Graph& graph) const
+{
+    return CloneBase<SliceLayer>(graph, m_Param, GetName());
+}
+
+void SliceLayer::ValidateTensorShapesFromInputs()
+{
+    VerifyLayerConnections(1, CHECK_LOCATION());
+
+    auto inferredShapes = InferOutputShapes({ GetInputSlot(0).GetConnection()->GetTensorInfo().GetShape() });
+
+    BOOST_ASSERT(inferredShapes.size() == 1);
+
+    ConditionalThrowIfNotEqual<LayerValidationException>(
+            "SliceLayer: TensorShape set on OutputSlot[0] does not match the inferred shape.",
+            GetOutputSlot(0).GetTensorInfo().GetShape(),
+            inferredShapes[0]);
+}
+
+std::vector<TensorShape> SliceLayer::InferOutputShapes(const std::vector<TensorShape>& inputShapes) const
+{
+    BOOST_ASSERT(inputShapes.size() == 1);
+
+    TensorShape outputShape(boost::numeric_cast<unsigned int>(m_Param.m_Size.size()), m_Param.m_Size.data());
+
+    return std::vector<TensorShape>({ outputShape });
+}
+
+void SliceLayer::Accept(ILayerVisitor& visitor) const
+{
+    visitor.VisitSliceLayer(this, GetParameters(), GetName());
+}
+
+} // namespace armnn
-- 
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