MLCE-1093 Added Axis to ViewsDescriptor

 * Added Axis to ViewsDescriptor to store the value where ever possible.
 * Updated Serializer and Deserializer to handle axis.

Signed-off-by: Mike Kelly <mike.kelly@arm.com>
Change-Id: I56e442872b47485a608b25fbc79063b362a25618

4 files changed, 37 insertions, 1 deletions

diff --git a/include/armnn/Descriptors.hpp b/include/armnn/Descriptors.hpp
index f1ac17f4c6..f60e8f3bea 100644
--- a/include/armnn/Descriptors.hpp
+++ b/include/armnn/Descriptors.hpp
@@ -276,9 +276,21 @@ struct ViewsDescriptor : BaseDescriptor
 
     /// Swap the ViewsDescriptor value first and second.
     friend void swap(ViewsDescriptor& first, ViewsDescriptor& second);
+
+    /// Set the axis value.
+    void SetAxis(int32_t axis);
+
+    /// Get the axis value.
+    int32_t GetAxis() const;
+
+    /// Returns true if an axis has been set.
+    bool HasAxis() const;
+
 private:
     OriginsDescriptor m_Origins;
     uint32_t**        m_ViewSizes;
+    bool              m_IsAxisSet = false;
+    int32_t           m_Axis = 0;
 };
 
 
diff --git a/src/armnn/Descriptors.cpp b/src/armnn/Descriptors.cpp
index a1419cfbf7..e6374aea8f 100644
--- a/src/armnn/Descriptors.cpp
+++ b/src/armnn/Descriptors.cpp
@@ -1,5 +1,5 @@
 //
-// Copyright © 2022 Arm Ltd and Contributors. All rights reserved.
+// Copyright © 2017-2023 Arm Ltd and Contributors. All rights reserved.
 // SPDX-License-Identifier: MIT
 //
 #include "armnn/Descriptors.hpp"
@@ -363,6 +363,24 @@ void swap(ViewsDescriptor& first, ViewsDescriptor& second)
     swap(first.m_ViewSizes, second.m_ViewSizes);
 }
 
+void ViewsDescriptor::SetAxis(int32_t axis)
+{
+    m_Axis = axis;
+    m_IsAxisSet = true;
+}
+
+/// Get the axis value.
+int32_t ViewsDescriptor::GetAxis() const
+{
+    return m_Axis;
+}
+
+/// Returns true if an axis has been set.
+bool ViewsDescriptor::HasAxis() const
+{
+    return m_IsAxisSet;
+}
+
 int StridedSliceDescriptor::GetStartForAxis(const TensorShape& inputShape,
                                             unsigned int axis) const
 {
diff --git a/src/armnn/SerializeLayerParameters.cpp b/src/armnn/SerializeLayerParameters.cpp
index 1445c70a70..d65a7d55fa 100644
--- a/src/armnn/SerializeLayerParameters.cpp
+++ b/src/armnn/SerializeLayerParameters.cpp
@@ -636,6 +636,10 @@ void StringifyLayerParameters<ViewsDescriptor>::Serialize(ParameterStringifyFunc
         }
         value << "]";
         fn(key.str(), value.str());
+        if (desc.HasAxis())
+        {
+            fn("Axis", std::to_string(desc.GetAxis()));
+        }
     }
     StringifyLayerParameters<OriginsDescriptor>::Serialize(fn, desc.GetOrigins());
 }
diff --git a/src/armnnSerializer/ArmnnSchema.fbs b/src/armnnSerializer/ArmnnSchema.fbs
index bd0bd0380d..ec4b48639d 100644
--- a/src/armnnSerializer/ArmnnSchema.fbs
+++ b/src/armnnSerializer/ArmnnSchema.fbs
@@ -774,6 +774,8 @@ table OriginsDescriptor {
 table ViewsDescriptor {
    origins:OriginsDescriptor;
    viewSizes:[UintVector];
+   hasAxis:bool;
+   axis:int;
 }
 
 table SplitterLayer {