IVGCVSW-6630 Add new method AddPrecompiledLayer() to INetwork

  * Add new method AddPrecompiledLayer() to INetwork
    with Comments noting it is for backend users.
  * Added unit test to SubgraphViewTests.cpp.
  * Bug fix and code refactor in Graph.cpp specifically around
    Graph::SubstituteSubgraph(SubgraphView& subgraph,
                              IConnectableLayer* substituteLayer)

Change-Id: If2d816e5109e48ce920bf92d8823b39130c23a16
Signed-off-by: Cathal Corbett <cathal.corbett@arm.com>

1 files changed, 13 insertions, 0 deletions

diff --git a/include/armnn/INetwork.hpp b/include/armnn/INetwork.hpp
index 1d98821160..4da01a62db 100644
--- a/include/armnn/INetwork.hpp
+++ b/include/armnn/INetwork.hpp
@@ -225,6 +225,9 @@ class NetworkImpl;
 using INetworkPtr = std::unique_ptr<INetwork, void(*)(INetwork* network)>;
 using IOptimizedNetworkPtr = std::unique_ptr<IOptimizedNetwork, void(*)(IOptimizedNetwork* network)>;
 
+using CompiledBlobDeleter = std::function<void(const void*)>;
+using CompiledBlobPtr = std::unique_ptr<void, CompiledBlobDeleter>;
+
 /// Main network class which provides the interface for building up a neural network.
 /// This object is subsequently required by the IRuntime::Load() method.
 class INetwork
@@ -413,6 +416,16 @@ public:
     IConnectableLayer* AddPooling3dLayer(const Pooling3dDescriptor& pooling3dDescriptor,
         const char* name = nullptr);
 
+    /// Adds a Precompiled layer to the network.
+    /// Method use is for backend users.
+    /// @param preCompiledDescriptor - PreCompiledDescriptor contains parameters for the Precompiled layer.
+    /// @param compiledBlobPtr - CompiledBlobPtr pre-compiled object set for the Precompiled layer.
+    /// @param backend - optional BackendId set for the Precompiled layer.
+    /// @return - Interface for configuring the layer.
+    IConnectableLayer* AddPrecompiledLayer(const PreCompiledDescriptor& preCompiledDescriptor,
+                                           CompiledBlobPtr& compiledBlobPtr,
+                                           const Optional<BackendId>& backend);
+
     /// Adds an activation layer to the network.
     /// @param activationDescriptor - ActivationDescriptor to configure the activation.
     /// @param name - Optional name for the layer.