From 3537c2ca7ebf31c1673b9ec2bb0c17b0406bbae0 Mon Sep 17 00:00:00 2001
From: surmeh01 <surabhi.mehta@arm.com>
Date: Fri, 18 May 2018 16:31:43 +0100
Subject: Release 18.05

---
 src/armnn/layers/SplitterLayer.cpp | 81 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 81 insertions(+)
 create mode 100644 src/armnn/layers/SplitterLayer.cpp

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

diff --git a/src/armnn/layers/SplitterLayer.cpp b/src/armnn/layers/SplitterLayer.cpp
new file mode 100644
index 0000000000..630921e4d8
--- /dev/null
+++ b/src/armnn/layers/SplitterLayer.cpp
@@ -0,0 +1,81 @@
+//
+// Copyright © 2017 Arm Ltd. All rights reserved.
+// See LICENSE file in the project root for full license information.
+//
+#include "SplitterLayer.hpp"
+
+#include "LayerCloneBase.hpp"
+
+#include <armnn/TypesUtils.hpp>
+#include <backends/WorkloadData.hpp>
+#include <backends/WorkloadFactory.hpp>
+
+namespace armnn
+{
+
+SplitterLayer::SplitterLayer(const ViewsDescriptor& param, const char* name)
+    : LayerWithParameters(1, param.GetNumViews(), LayerType::Splitter, param, name)
+{
+}
+
+std::unique_ptr<IWorkload> SplitterLayer::CreateWorkload(const Graph& graph, const IWorkloadFactory& factory) const
+{
+    SplitterQueueDescriptor descriptor;
+
+    // copy the window origins to the descriptor
+    for (unsigned int i = 0; i < m_Param.GetNumViews(); ++i)
+    {
+        descriptor.m_ViewOrigins.emplace_back(
+            std::vector<unsigned int>(m_Param.GetViewOrigin(i), m_Param.GetViewOrigin(i) + m_Param.GetNumDimensions()));
+    }
+
+    return factory.CreateSplitter(descriptor, PrepInfoAndDesc(descriptor, graph));
+}
+
+void SplitterLayer::CreateTensorHandles(Graph& graph, const IWorkloadFactory& factory)
+{
+    //if sub tensors are supported than all the "splitter" need to do is to
+    //set the outputs to be appropriate sub tensors of the input.
+    if (factory.SupportsSubTensors())
+    {
+        const OutputHandler& outputHandler = GetInputSlots()[0].GetConnectedOutputSlot()->GetOutputHandler();
+
+        ITensorHandle* inputData = outputHandler.GetData();
+        //create the outputs as subtensors of the input
+        for (unsigned int i = 0; i < m_Param.GetNumViews(); ++i)
+        {
+            m_OutputHandlers[i].SetData(factory.CreateSubTensorHandle(*inputData,
+                                                                      m_OutputHandlers[i].GetTensorInfo().GetShape(),
+                                                                      m_Param.GetViewOrigin(i)));
+        }
+    }
+    else
+    {
+        for (unsigned int i = 0; i < m_Param.GetNumViews(); ++i)
+        {
+            m_OutputHandlers[i].CreateTensorHandles(factory);
+        }
+    }
+}
+
+SplitterLayer* SplitterLayer::Clone(Graph& graph) const
+{
+    return CloneBase<SplitterLayer>(graph, m_Param, GetName());
+}
+
+void SplitterLayer::ValidateTensorShapesFromInputs()
+{
+    //Output shapes must match View shapes.
+    for (unsigned int viewIdx = 0; viewIdx < m_Param.GetNumViews(); viewIdx++)
+    {
+        const uint32_t* sizes = m_Param.GetViewSizes(viewIdx);
+
+        TensorShape outShape(m_Param.GetNumDimensions(), sizes);
+        ConditionalThrowIfNotEqual<LayerValidationException>(
+            "SplitterLayer: View sizes must match output tensor shapes.",
+            GetOutputSlot(viewIdx).GetTensorInfo().GetShape(),
+            outShape);
+    }
+}
+
+} // namespace armnn
-- 
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