IVGCVSW-4399 Create Sample Dynamic backend

 * Move IWorkload and WorkloadInfo to include/armnn/backends
 * Add simple sample dynamic backend with addition workload
 * Add sample example to run dynamic backend
 * Unit tests

Signed-off-by: Narumol Prangnawarat <narumol.prangnawarat@arm.com>
Change-Id: I0753ce35b8e8a6223a1471388b49246d82438a44

3 files changed, 51 insertions, 1 deletions

diff --git a/include/armnn/backends/CMakeLists.txt b/include/armnn/backends/CMakeLists.txt
index 90a022aad7..94e757fe8a 100644
--- a/include/armnn/backends/CMakeLists.txt
+++ b/include/armnn/backends/CMakeLists.txt
@@ -8,10 +8,12 @@ list(APPEND armnnBackendsAPI_sources
      DynamicBackend.hpp
      IBackendInternal.hpp
      IBackendContext.hpp
-     ITensorHandleFactory.hpp
      IMemoryManager.hpp
      ITensorHandle.hpp
+     ITensorHandleFactory.hpp
+     IWorkload.hpp
      OptimizationViews.hpp
+     WorkloadInfo.hpp
      profiling/IBackendProfiling.hpp
      profiling/IBackendProfilingContext.hpp
 )
diff --git a/include/armnn/backends/IWorkload.hpp b/include/armnn/backends/IWorkload.hpp
new file mode 100644
index 0000000000..0bd8d2db75
--- /dev/null
+++ b/include/armnn/backends/IWorkload.hpp
@@ -0,0 +1,26 @@
+//
+// Copyright © 2020 Arm Ltd. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+#pragma once
+
+#include <armnn/Types.hpp>
+
+namespace armnn
+{
+
+/// Workload interface to enqueue a layer computation.
+class IWorkload {
+public:
+    virtual ~IWorkload() {}
+
+    virtual void PostAllocationConfigure() = 0;
+
+    virtual void Execute() const = 0;
+
+    virtual profiling::ProfilingGuid GetGuid() const = 0;
+
+    virtual void RegisterDebugCallback(const DebugCallbackFunction & /*func*/) {}
+};
+
+} //namespace armnn
diff --git a/include/armnn/backends/WorkloadInfo.hpp b/include/armnn/backends/WorkloadInfo.hpp
new file mode 100644
index 0000000000..edf3581791
--- /dev/null
+++ b/include/armnn/backends/WorkloadInfo.hpp
@@ -0,0 +1,22 @@
+//
+// Copyright © 2020 Arm Ltd. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+#pragma once
+
+#include <armnn/Tensor.hpp>
+
+#include <vector>
+
+namespace armnn
+{
+
+/// Contains information about inputs and outputs to a layer.
+/// This is needed at construction of workloads, but are not stored.
+struct WorkloadInfo
+{
+    std::vector<TensorInfo> m_InputTensorInfos;
+    std::vector<TensorInfo> m_OutputTensorInfos;
+};
+
+} //namespace armnn