IVGCVSW-4210 Create a public API for the common backend files

 * Create a public API for the common backend files
 * Move OutputHandler to armnn internal
 * Remove unused headers

Signed-off-by: Matteo Martincigh <matteo.martincigh@arm.com>
Signed-off-by: Narumol Prangnawarat <narumol.prangnawarat@arm.com>
Change-Id: I3e86d908b021e3561befa9d45158d87d2cbb18c0

1 files changed, 32 insertions, 0 deletions

diff --git a/include/armnn/backends/IBackendContext.hpp b/include/armnn/backends/IBackendContext.hpp
new file mode 100644
index 0000000000..de9824956f
--- /dev/null
+++ b/include/armnn/backends/IBackendContext.hpp
@@ -0,0 +1,32 @@
+//
+// Copyright © 2017 Arm Ltd. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+#pragma once
+
+#include <armnn/IRuntime.hpp>
+#include <memory>
+
+namespace armnn
+{
+
+class IBackendContext
+{
+protected:
+    IBackendContext(const IRuntime::CreationOptions&) {}
+
+public:
+    // Before and after Load network events
+    virtual bool BeforeLoadNetwork(NetworkId networkId) = 0;
+    virtual bool AfterLoadNetwork(NetworkId networkId) = 0;
+
+    // Before and after Unload network events
+    virtual bool BeforeUnloadNetwork(NetworkId networkId) = 0;
+    virtual bool AfterUnloadNetwork(NetworkId networkId) = 0;
+
+    virtual ~IBackendContext() {}
+};
+
+using IBackendContextUniquePtr = std::unique_ptr<IBackendContext>;
+
+} // namespace armnn
\ No newline at end of file